JP6204300B2 - Vertical sealing device for bag making and filling machine - Google Patents

Vertical sealing device for bag making and filling machine Download PDF

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Publication number
JP6204300B2
JP6204300B2 JP2014164945A JP2014164945A JP6204300B2 JP 6204300 B2 JP6204300 B2 JP 6204300B2 JP 2014164945 A JP2014164945 A JP 2014164945A JP 2014164945 A JP2014164945 A JP 2014164945A JP 6204300 B2 JP6204300 B2 JP 6204300B2
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roller
overlapping portion
heating
heating roller
film
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JP2016041592A (en
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齋藤　勲
勲 齋藤
昌孝 二村
昌孝 二村
浩彰 大村
浩彰 大村
健雄 飯田
健雄 飯田
博史 杉本
博史 杉本
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株式会社フジキカイ
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • B29C66/91213—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws and measuring the electrical resistance of a resistive element belonging to said welding jaws, said element being, e.g. a thermistor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B29C66/91423—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools using joining tools having different temperature zones or using several joining tools with different temperatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)

Description

本発明は、横形製袋充填機等において、包装用のフィルムの縁部の重合部を加熱状態のシールローラで挟持して、重合部をシールするようにした縦シール装置の改良技術に関するものである。   The present invention relates to an improved technique of a vertical sealing device in which a superposed portion at the edge of a packaging film is sandwiched by a heated seal roller in a horizontal bag making and filling machine or the like to seal the superposed portion. is there.

加熱されたシールローラによりフィルムの重合部をシールする装置において、シールローラの外周面に重合部を所定範囲巻き掛け状態にして加熱するようにした縦シール装置が従来から知られている。（例えば、特許文献１〜３）
これらの特許文献１〜３においては、いずれも、加熱状態の大径シールローラの外周面に対してフィルムの重合部が巻き掛けられるとともに、小径シールローラにより大径シールローラ上に押さえられ、これによってフィルム同士が溶着されて重合部がシールされるようになっている。 2. Description of the Related Art Conventionally, in a device that seals a superposed portion of a film with a heated seal roller, a vertical seal device is known in which the superposed portion is wound around a predetermined range on the outer peripheral surface of the seal roller and heated. (For example, Patent Documents 1 to 3)
In these Patent Documents 1 to 3, the superposed part of the film is wound around the outer peripheral surface of the heated large-diameter seal roller, and is pressed onto the large-diameter seal roller by the small-diameter seal roller. As a result, the films are welded together to seal the overlapping portion.

実開昭６１−１８０９０７号公報Japanese Utility Model Publication No. 61-180907 実公昭４９−０４００１１号公報Japanese Utility Model Publication No. 49-040011 実公昭５１−０４４４５６号公報Japanese Utility Model Publication No. 51-044456

前記特許文献１〜３においては、小径のシールローラは加熱されないので、フィルムは、大径のシールローラによりその一側の外側面からのみ加熱される。そのためにフィルムの厚みやフィルムの材質によっては、フィルムの重合部の加熱を十分行うことができずに、溶着不足によるシール不良となったり、あるいは、重合部のフィルム内面のシーラントが溶融できるようにシール温度を高く設定した場合には、過度な加熱によって重合部のフィルム表面が溶けたり、重合部にシール皺が生じたりして、見栄えが低下し、場合によっては、商品価値にならない程のシール不良を引き起こしたりする、等の諸問題が発生する。特に高速包装においてフィルム搬送速度が高速に設定される場合で、密封性を得るためにはシール温度を高温に設定する必要があるとともに、フィルムに高テンションが作用するために、前記した問題が顕著である。   In Patent Documents 1 to 3, since the small-diameter seal roller is not heated, the film is heated only from the outer surface on one side by the large-diameter seal roller. Therefore, depending on the thickness of the film and the material of the film, it is not possible to sufficiently heat the polymerized part of the film, resulting in poor sealing due to insufficient welding, or the sealant on the inner surface of the film of the polymerized part can be melted. When the sealing temperature is set high, the film surface of the polymerized part melts due to excessive heating, or seal flaws occur in the polymerized part, and the appearance deteriorates. Various problems, such as causing defects, occur. Especially when the film conveyance speed is set to high speed in high-speed packaging, it is necessary to set the sealing temperature to a high temperature in order to obtain the sealing performance, and the high tension acts on the film. It is.

本発明は、特に、ポリプロピレンなどの基材に、アルミ蒸着や、アルミラミネート処理されたフィルムなどで比較的厚みがあって、フィルム重合部に対する表面側からの加熱に対して内面まで熱が伝わりにくい性状のフィルムを用いて、高速包装時にフィルム搬送速度が高速に設定される場合などにおいても、密封性の高い良好なシールを得ることができる製袋充填機における縦シール装置を提供することを目的とする。   In the present invention, in particular, a base material such as polypropylene has a relatively thick film such as aluminum deposited or aluminum laminated film, and heat is hardly transmitted to the inner surface with respect to heating from the surface side to the film polymerization portion. An object of the present invention is to provide a vertical sealing device in a bag making and filling machine that can obtain a good seal with high sealing performance even when the film conveyance speed is set to a high speed during high-speed packaging using a film having properties. And

上記の目的を達成するために、請求項１に記載の発明においては、フィルム１０２の重合部１０４を挟持して搬送する送り手段２７と、その下流に配設され前記重合部１０４を加熱する予熱手段２８と、その下流に配設されフィルム１０２の搬送中に重合部１０４を加熱してシールするシールローラ２９を設けた縦シール装置において、前記予熱手段２８は、重合部１０４を挟んで近接して配置される加熱面６５ａ，６５ｂを備えた予熱ブロック６３，８４を備え、その加熱面６５ａ，６５ｂを前記送り手段２７における重合部１０４の挟持部から、前記シールローラ２９における補助ローラ７３への巻付開始位置７８までに至る傾斜した重合部１０４の通過ラインＳに沿って平行に配置し、前記シールローラ２９には、前記重合部１０４を挟持して相互に異なる方向に回転駆動される第１，第２加熱ローラ７１，７２と、第１加熱ローラ７１の上流側において第２加熱ローラ７２とで前記重合部１０４を挟持するよう自由回転可能に支持され、第１加熱ローラ７１及び第２加熱ローラ７２より小径に形成した前記補助ローラ７３とを備え、前記第１加熱ローラ７１は第２加熱ローラ７２の回転中心より下流に配置され、前記第１加熱ローラ７１の第２加熱ローラ７２とによる重合部１０４の挟持位置は、前記補助ローラ７３による重合部１０４の挟持位置より下流に離間して配置されるようにしたことを特徴とする。 To achieve the above object, in the invention according to claim 1, the feeding means 27 for conveying by sandwiching the overlapping portion 104 of the film 102, it is disposed downstream of its heating the overlapping portion 104 In the vertical sealing device provided with the preheating means 28 and the sealing roller 29 disposed downstream thereof to heat and seal the overlapping portion 104 during the conveyance of the film 102, the preheating means 28 is located close to the overlapping portion 104. The preheating blocks 63 and 84 having the heating surfaces 65a and 65b are arranged, and the heating surfaces 65a and 65b are passed from the sandwiching portion of the overlapping portion 104 in the feeding means 27 to the auxiliary roller 73 in the seal roller 29. along the passage line S of inclined overlapped portion 104 extending up to the winding start position 78 arranged in parallel, the seal roller 29, the overlapping portion 104 The first and second heating rollers 71 and 72 that are driven and rotated in different directions, and the second heating roller 72 on the upstream side of the first heating roller 71 so as to sandwich the overlapping portion 104 freely. capable supported, and a auxiliary roller 73 which is smaller in diameter than the first heating roller 71 and the second heating roller 72, the first heating roller 71 is disposed downstream from the rotation center of the second heating roller 72, The sandwiching position of the overlapping portion 104 by the second heating roller 72 of the first heating roller 71 is arranged to be spaced downstream from the sandwiching position of the overlapping portion 104 by the auxiliary roller 73. .

この構成においては、フィルムの重合部１０４が第２加熱ローラ７２と補助ローラ７３との間に導入されて、補助ローラ７３に対する巻付開始位置７８及び両ローラ７２，７３の間の挟持部である挟持位置７５を経て第２加熱ローラ７２の外周面に巻き付いた後に第１加熱ローラ７１と第２加熱ローラ７２との挟持部７６を経て第１加熱ローラ７１の巻付終了位置７９に至る。このため、重合部１０４が第２加熱ローラ７２と第１加熱ローラ７２との外周に巻き付けられる区間で熱シールされる。   In this configuration, the film overlapping portion 104 is introduced between the second heating roller 72 and the auxiliary roller 73, and is a sandwiching portion between the winding start position 78 and the rollers 72, 73 with respect to the auxiliary roller 73. After winding around the outer peripheral surface of the second heating roller 72 via the clamping position 75, it reaches the winding end position 79 of the first heating roller 71 via the clamping portion 76 between the first heating roller 71 and the second heating roller 72. For this reason, the superposition | polymerization part 104 is heat-sealed in the area wound around the outer periphery of the 2nd heating roller 72 and the 1st heating roller 72. FIG.

この場合、重合部１０４を、第２加熱ローラ７２と補助ローラ７３とによる巻付開始位置７８から両挟持位置７５，７６を超えた巻付終了位置７９までの長い区間に亘り両加熱ローラ７２，７１の外周面に圧接した加圧状態にて加熱できるので、重合部１０４を充分に加熱して圧着できる。また、大径の第２加熱ローラ７２から同じく大径の第１加熱ローラ７１にかけての間となる長い区間において加熱されたローラの外周に巻付けて重合部１０４を加熱できる。従って、シール温度を低くすることができて、重合部１０４の表面が高温で溶けたり、重合部１０４にシール皺が生じたりして重合部１０４の外観の見栄えを損ねることなく綺麗で密封性の高い縦シールを施すことができる。しかも、補助ローラ７３を小径に形成したために、シールローラ２９全体を小形化できる。   In this case, the superposition unit 104 is moved over the long section from the winding start position 78 by the second heating roller 72 and the auxiliary roller 73 to the winding end position 79 beyond both the sandwiching positions 75 and 76. Since it can heat in the pressurization state which press-contacted to the outer peripheral surface of 71, the superposition | polymerization part 104 can fully be heated and crimped | bonded. Further, the overlapping portion 104 can be heated by wrapping around the outer periphery of the heated roller in a long section between the large-diameter second heating roller 72 and the large-diameter first heating roller 71. Accordingly, the sealing temperature can be lowered, the surface of the overlapping portion 104 is melted at a high temperature, or a sealing flaw is generated in the overlapping portion 104, so that the appearance of the overlapping portion 104 is not deteriorated and is clean and sealable. High vertical seal can be applied. In addition, since the auxiliary roller 73 has a small diameter, the entire seal roller 29 can be reduced in size.

加えて、小径の補助ローラ７３を上流側に設けたために、シールローラ２９の上流側に予熱手段２８を設けた場合には、シールローラ２９を予熱手段２８に接近させることができる。従って、予熱手段２８とシールローラ２９との間における重合部１０４の温度低下を少なくできる。このため、シールローラ２９におけるシール温度を低くすることができて、前記と同様に重合部１０４の表面が高温で溶けたり、重合部１０４にシール皺が生じたりすることなく、重合部１０４を綺麗で密封性の高い縦シールを施すことができる。   In addition, since the auxiliary roller 73 having a small diameter is provided on the upstream side, when the preheating means 28 is provided on the upstream side of the seal roller 29, the seal roller 29 can be brought close to the preheating means 28. Therefore, the temperature drop of the overlapping portion 104 between the preheating means 28 and the seal roller 29 can be reduced. For this reason, the sealing temperature in the seal roller 29 can be lowered, and the overlapping portion 104 can be cleaned without causing the surface of the overlapping portion 104 to melt at a high temperature or causing a seal flaw in the overlapping portion 104 as described above. It is possible to apply a vertical seal with high sealing performance.

また、この構成においては、シールローラ２９による加熱に先立ち予熱手段２８によって重合部１０４を加熱できるので、シールローラ２９での加熱するシール温度設定を低く抑えることができる。 Further, in this configuration, the overlapping portion 104 by preheating means 28 prior to heating by the sealing roller 29 can be pressurized heat can be suppressed sealing temperature settings for heating on sealing roller 29 lowered.

また、この構成によれば、送り手段２７からシールローラ２９に向けた重合部１０４の通過ラインＳは、前記フィルム搬送中心ラインＣに対して傾斜する。その傾斜した通過ラインＳに沿って、予熱手段２８の予熱ブロック６３，６４の加熱面６５ａ，６５ｂを平行に配置している。それにより、加熱面６５ａ，６５ｂを、より重合部１０４に接近させることができる隙間にすることができ、重合部１０４に対する加熱面６５ａ，６５ｂによる予熱効率を高めることができる。 Further , according to this configuration, the passing line S of the overlapping portion 104 from the feeding means 27 toward the seal roller 29 is inclined with respect to the film conveyance center line C. Along the inclined passage line S, the heating surfaces 65a and 65b of the preheating blocks 63 and 64 of the preheating means 28 are arranged in parallel. Thereby, the heating surfaces 65a and 65b can be formed as gaps that can be brought closer to the overlapping portion 104, and the preheating efficiency by the heating surfaces 65a and 65b for the overlapping portion 104 can be increased.

請求項２に記載の発明においては、フィルム１０２の重合部１０４を挟持して搬送する送り手段２７の下流に配設され、フィルム１０２の搬送中に重合部１０４を加熱してシールするシールローラ２９を設けた縦シール装置において、前記シールローラ２９には、前記重合部１０４を挟持して相互に異なる方向に回転駆動される第１，第２加熱ローラ７１，７２と、第１加熱ローラ７１の上流側において第２加熱ローラ７２とで前記重合部１０４を挟持するよう自由回転可能に支持され、第１加熱ローラ７１及び第２加熱ローラ７２より小径に形成した補助ローラ７３とを備え、前記第１加熱ローラ７１は第２加熱ローラ７２の回転中心より下流に配置され、前記第１加熱ローラ７１の第２加熱ローラ７２とによる重合部１０４の挟持位置は、前記補助ローラ７３による重合部１０４の挟持位置より下流に離間して配置され、前記送り手段２７における重合部１０４の挟持部から、前記シールローラ２９における補助ローラ７３への巻付開始位置７８までに至る傾斜した重合部１０４の通過ラインＳにおいて、補助ローラ７３との巻付開始位置７８と前記加熱ローラ７１との巻付終了位置７９とは、フィルム１０２の搬送中心ラインＣからの左右への振れ量Ｘ１，Ｘ２を同じ量となる位置に設定されることを特徴とする。 According to the second aspect of the present invention, a seal roller 29 is provided downstream of the feeding means 27 that sandwiches and conveys the overlapping portion 104 of the film 102, and heats and seals the overlapping portion 104 during the transportation of the film 102. In the vertical sealing device provided with the first and second heating rollers 71 and 72, the sealing roller 29 includes the first heating roller 71 and the first and second heating rollers 71 and 72 which are driven to rotate in different directions with the overlapping portion 104 interposed therebetween. The first heating roller 71 and an auxiliary roller 73 having a smaller diameter than the second heating roller 72 are supported on the upstream side so as to be freely rotatable so as to sandwich the overlapping portion 104 with the second heating roller 72, and The first heating roller 71 is arranged downstream of the rotation center of the second heating roller 72, and the position where the overlapping portion 104 is held by the second heating roller 72 of the first heating roller 71 is The auxiliary roller 73 is arranged to be spaced downstream from the clamping position of the overlapping portion 104 and from the holding portion of the overlapping portion 104 in the feeding means 27 to the winding start position 78 of the sealing roller 29 around the auxiliary roller 73. In the sloping passage line S of the overlapping portion 104, the winding start position 78 with the auxiliary roller 73 and the winding end position 79 with the heating roller 71 are swung left and right from the transport center line C of the film 102. The amounts X1 and X2 are set to the same amount.

この構成によれば、加熱によって重合部１０４で重なる一側のフィルム１０２が片伸びせず、そのようなフィルム１０２の片伸びが要因で下流側へのフィルム１０２の搬送時にフィルム１０２が蛇行してしまうことがない。   According to this configuration, the film 102 on one side that overlaps at the polymerization portion 104 is not stretched by heating, and the film 102 meanders when the film 102 is transported to the downstream side due to such stretch of the film 102. There is no end.

請求項３に記載の発明においては、請求項１または２に記載の発明において、前記シールローラ２９及び予熱手段２８を覆ってフィルム１０２への熱影響を防止するベッド２３を設け、そのベッド２３には前記通過ラインＳに沿って延びる案内間隙２５を設けた遮へい板２２を備え、前記重合部１０４の通過ラインＳにおいて、補助ローラ７３との巻付開始位置７８と前記加熱ローラ７３との巻付終了位置７９とによるフィルム１０２の搬送中心ラインＣからの左右への振れ量に応じた幅広部Ｌを形成したことを特徴とする。 According to a third aspect of the present invention, in the first or second aspect of the present invention, a bed 23 is provided to cover the sealing roller 29 and the preheating means 28 and prevent the heat effect on the film 102. Includes a shielding plate 22 provided with a guide gap 25 extending along the passing line S. In the passing line S of the overlapping section 104, the winding start position 78 of the auxiliary roller 73 and the heating roller 73 are wound. A wide portion L is formed in accordance with the amount of lateral deflection from the conveyance center line C of the film 102 by the end position 79.

この構成によれば、ベッド２３は、遮蔽板２２により、予熱手段２８やシールローラ２９からの熱による悪影響をフィルム１０２に及ばさないよう遮へいできる。また、遮へい板２２は、筒状フィルム１０２に収容された物品１０３が載置されて搬送される際の搬送ベッドとしても機能する。重合部１０４の通過ラインＳが搬送中心ラインＣから左右に振れても、幅広部Ｌにより重合部１０４を左右からガイドして蛇行を防止するよう良好に下流側へ案内し得る。   According to this configuration, the bed 23 can be shielded by the shielding plate 22 so that the film 102 is not adversely affected by the heat from the preheating means 28 and the seal roller 29. Further, the shielding plate 22 also functions as a transport bed when the article 103 accommodated in the tubular film 102 is placed and transported. Even if the passing line S of the overlapping portion 104 is swung to the left and right from the conveyance center line C, the wide portion L can guide the overlapping portion 104 from the left and right to guide the downstream side well so as to prevent meandering.

請求項４に記載の発明においては、請求項１〜３に記載の発明において、規定時間を超えるフィルム搬送停止時には第２加熱ローラ７２が補助ローラ７３と第１加熱ローラ７１とから離間されて、補助ローラ７３と加熱ローラ７１とによる重合部１０４の挟持を解除するよう作動されることを特徴とする。
 In invention of Claim 4 , in invention of Claims 1-3 , the 2nd heating roller 72 is separated from auxiliary roller 73 and the 1st heating roller 71 at the time of film conveyance stop exceeding regulation time, It is operated to release the holding of the overlapping portion 104 by the auxiliary roller 73 and the heating roller 71.

この構成によれば、加熱ローラ７１，７２の外周部に巻付いた重合部１０４の圧接状態が解放されて重合部の加熱が弱められる。この時、重合部１０４は、補助ローラ７３と第１加熱ローラ７１とで一側が軽接触状態で支持され、他側を第２加熱ローラ７２が軽接触状態となって支持し重合部１０４は両側からの挟持圧が解放されても、弛みによってシール再開時における挟持位置のずれが生じてしまうことがない。   According to this configuration, the pressure contact state of the overlapping portion 104 wound around the outer peripheral portions of the heating rollers 71 and 72 is released, and heating of the overlapping portion is weakened. At this time, the superposition unit 104 is supported by the auxiliary roller 73 and the first heating roller 71 in a light contact state on one side, and the other side is supported by the second heating roller 72 in a light contact state. Even if the clamping pressure from the release is released, the clamping position is not shifted due to the loosening when the seal is restarted.

本発明のシール装置によれば、シール温度を低くしてフィルムを長い区間シールローラの外周面に圧接して加熱することができるため、重合部１０４の表面が高温で溶けたり、重合部１０４にシール皺が生じたりすることなく、重合部１０４を綺麗で密封性の高い縦シールを施すことができる。   According to the sealing device of the present invention, since the film can be heated by being pressed against the outer peripheral surface of the long section sealing roller by lowering the sealing temperature, the surface of the overlapping portion 104 melts at a high temperature or the overlapping portion 104 A vertical seal having a clean and high sealing property can be applied to the overlapping portion 104 without causing any seal wrinkles.

縦シール装置の平面図。The top view of a vertical sealing apparatus. ベッドを取り除いて示す縦シール装置の平面図。The top view of the vertical seal | sticker apparatus which removes and shows a bed. 主にシールローラを示す平面図。The top view which mainly shows a sealing roller. 送りこみ機構及び引き出し機構を示す断面図。Sectional drawing which shows a feeding mechanism and a drawer mechanism. シールローラを示す断面図。Sectional drawing which shows a seal roller. 予熱機構を示す側面図。The side view which shows a preheating mechanism. フィルムによるシール前の包装状態を示す簡略図。The simplification figure which shows the packaging state before sealing with a film.

以下に、本発明を具体化した実施形態を図面に従って説明する。
本実施形態における縦シール装置を採用した製袋充填包装機としての横形製袋充填機は、フィルム供給源となる下方に配置された原反ロールから上方へ引き出した帯状フィルム１０２を製袋手段で筒状に成形するとともに、フィルム１０２の長手方向両端縁部を重合して縦シール装置によって縦シールを施し、また、その筒状成形されるフィルム１０２中に物品を供給コンベアで所定間隔毎に供給し、筒状成形されたフィルム１０２中に供給されている物品１０３を挟む前後位置で、筒状フィルム１０２に、フィルム搬送方向と交差する方向に横シール・切断して袋詰め包装品を得るようにしている。 DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.
A horizontal bag making and filling machine as a bag making and filling and packaging machine adopting a vertical sealing device in the present embodiment is a bag making means that uses a bag-like film to draw a belt-like film 102 drawn upward from a raw roll placed below a film supply source. In addition to being molded into a cylindrical shape, both longitudinal edges of the film 102 are superposed and vertically sealed by a vertical sealing device, and articles are supplied into the cylindrically formed film 102 at predetermined intervals by a supply conveyor. Then, at a position before and after sandwiching the article 103 supplied in the cylindrically formed film 102, the cylindrical film 102 is laterally sealed and cut in a direction crossing the film conveying direction so as to obtain a packaged package. I have to.

実施形態の縦シール装置においては、図１〜図３の左側から右側に向かう通路１０１が設定されている。そして、図７に示すように、上流側の図示省略の製袋手段で筒状に成形されたフィルム１０２中に図示省略の供給コンベヤで物品１０３が供給されることで物品１０３を内包したフィルム１０２が筒状に成形されて、フィルム１０２の両縁部を下方において重合した重合部１０４が通路１０１へ引き込み案内される。この状態で、フィルム１０２が通路１０１を図１の左側から右側となる下流に向けて搬送され、重合部１０４に対して縦シールが施される。   In the vertical seal device of the embodiment, a passage 101 is set from the left side to the right side in FIGS. Then, as shown in FIG. 7, the film 102 containing the article 103 is supplied by the supply conveyor (not shown) into the film 102 which is formed into a cylindrical shape by the bag making means (not shown) on the upstream side. Is formed into a cylindrical shape, and the overlapping portion 104 in which both edges of the film 102 are polymerized below is drawn into the passage 101 and guided. In this state, the film 102 is transported through the passage 101 from the left side to the downstream side on the right side in FIG.

以下に、縦シール装置の構成を詳細に説明する。図１及び図４に示すように、縦シール装置の側壁部２１の上部には一対の遮へい板２２よりなるベッド２３が配設されており、両遮へい板２２間には、前記通路１０１の上流側に位置する幅広の開放部２４と、その下流側に位置する案内間隙２５とが形成されている。筒状成形されたフィルム１０２中に供給された物品１０３はベッド２３上に載置されて搬送され、フィルム１０２の両端縁部がベッド２３の案内間隙２５を介して引き込まれて、下方において重合された重合部１０４が縦シール装置によってフィルム１０２の搬送中に連続して縦シールが施される。   Below, the structure of a vertical seal | sticker apparatus is demonstrated in detail. As shown in FIGS. 1 and 4, a bed 23 including a pair of shielding plates 22 is disposed on the upper portion of the side wall portion 21 of the vertical sealing device, and between the shielding plates 22, an upstream of the passage 101. A wide open portion 24 located on the side and a guide gap 25 located on the downstream side are formed. The article 103 supplied into the cylindrically formed film 102 is placed on the bed 23 and conveyed, and both end edges of the film 102 are drawn through the guide gaps 25 of the bed 23 and are polymerized below. The overlapping portion 104 is continuously subjected to vertical sealing while the film 102 is being conveyed by the vertical sealing device.

図１及び図２に示すように、ベッド２３の下方には、通路１０１において挟持した重合部１０４を開放部２４から引き入れて案内間隙２５に向けて連続搬送するための送り手段２７，重合部１０４を予熱するための予熱手段２８，重合部１０４に縦シールを施すシールローラ２９，重合部１０４を挟持して下流へ送出する送出手段３０が配置されている。   As shown in FIGS. 1 and 2, below the bed 23, a feeding means 27 for pulling the overlapping portion 104 held in the passage 101 from the opening portion 24 and continuously transporting it toward the guide gap 25, the overlapping portion 104. There are disposed preheating means 28 for preheating, sealing roller 29 for vertically sealing the overlapping portion 104, and sending means 30 for holding the overlapping portion 104 and sending it downstream.

前記送り手段２７は、図４に示すように、前記開放部２４の下方において、側壁部２１に、取付ベース３１を介して取着された固定ブロック３２と、その固定ブロック３２に対して支持軸３３により回動可能に支持された可動ブロック３４とを備えている。固定ブロック３２及び可動ブロック３４には夫々上下方向に延在する回転軸３６，３７の上端に一対の送りローラ３８，３９が回転軸３６,３７と一体回転可能に支持されて通路１０１の両側に配置されるようになっている。   As shown in FIG. 4, the feeding means 27 includes a fixed block 32 attached to the side wall portion 21 via a mounting base 31 below the opening portion 24, and a support shaft for the fixed block 32. And a movable block 34 that is rotatably supported by 33. A pair of feed rollers 38 and 39 are supported on the fixed block 32 and the movable block 34 at the upper ends of rotary shafts 36 and 37 extending in the vertical direction, respectively, so as to be integrally rotatable with the rotary shafts 36 and 37, on both sides of the passage 101. It is arranged.

可動ブロック３４の下端側と固定ブロック３２の下端側との間に、回動可能に支持された操作軸２６が架設され、その操作軸２６にばね部材４０が装着される。そして、ばね部材４０による付勢力により可動ブロック３４が支持軸３３を支点として固定ブロック３２に対して回動可能に付勢されている。そして、操作軸２６の先端に取着したレバーハンドル３５の回動操作により可動ブロック３４が前記支持軸３３を支点として回動し、図４に実線で示すように、一方の送りローラ３９が他方の送りローラ３８に近接するよう移動して重合部１０４を両ローラ３８，３９の外周面により挟持する位置と、ばね部材４０の付勢力に抗して、可動ブロック３４が固定ブロック３２に対して傾動し、一方の送りローラ３９が他方の送りローラ３８から離間して重合部１０４の挟持を解除する位置とに位置付けることができる。可動ブロック３４がばね部材４０により付勢されていることで、一方の送りローラ３９が他方の送りローラ３８に所定の挟持圧によって圧接され、前記のようにレバーハンドル３５の回動操作によってばね部材４０の付勢力に抗して一方の送りローラ３９を他方の送りローラ３８から離間させることができる。   Between the lower end side of the movable block 34 and the lower end side of the fixed block 32, an operation shaft 26 is rotatably supported and a spring member 40 is mounted on the operation shaft 26. The movable block 34 is urged to be rotatable with respect to the fixed block 32 with the support shaft 33 as a fulcrum by the urging force of the spring member 40. Then, the movable block 34 is rotated with the support shaft 33 as a fulcrum by the turning operation of the lever handle 35 attached to the tip of the operation shaft 26, and as shown by the solid line in FIG. The movable block 34 moves against the fixed block 32 against the position where the overlapping portion 104 is moved between the roller 38 and 39 and the urging force of the spring member 40. It can be tilted and positioned at a position where one feed roller 39 is separated from the other feed roller 38 and releases the overlapping of the overlapping portion 104. Since the movable block 34 is urged by the spring member 40, one feed roller 39 is brought into pressure contact with the other feed roller 38 with a predetermined clamping pressure, and the spring member is rotated by the lever handle 35 as described above. One feed roller 39 can be separated from the other feed roller 38 against the urging force of 40.

前記両回転軸３６，３７は、モータ４１に連繋されたギア伝達機構４１１を介して相互に異なる方向に回転されて、両送りローラ３８，３９間に挟持された重合部１０４が通路１０１の下流側に送られる。   The rotary shafts 36 and 37 are rotated in different directions via a gear transmission mechanism 411 linked to the motor 41, and the overlapping portion 104 sandwiched between the feed rollers 38 and 39 is downstream of the passage 101. Sent to the side.

前記予熱手段２８は、図６に示すように、前記送り手段２７の下流側において、前記側壁部２１に配設したブラケット５１に一対の移動体５２，５３が接近離間可能に支持されている。ブラケット５１にはガイド部材５４が配設されており、移動体５２，５３に夫々２本ずつ配設したガイドロッド５５〜５８がガイド部材５４によって図６の左右方向にスライド移動可能に案内されている。一方の移動体５２に連結したガイドロッド５６の先端が伝達部材５９の一端部に支持されるとともに、他方の移動体５３に連結したガイドロッド５８の先端が伝達部材５９の他端側に回動可能に支持されている。そして、エアシリンダ６１を作動して一方の移動体５３を一方向または他方向に移動することで、他方の移動体５２が前記一方の移動体５３の反対方向に移動されるよう相互に近接離間移動する。   As shown in FIG. 6, in the preheating means 28, a pair of moving bodies 52 and 53 are supported on a bracket 51 disposed on the side wall portion 21 so as to be able to approach and separate from the downstream side of the feeding means 27. A guide member 54 is disposed on the bracket 51, and two guide rods 55 to 58 disposed on each of the moving bodies 52 and 53 are guided by the guide member 54 so as to be slidable in the left-right direction in FIG. Yes. The tip of the guide rod 56 connected to one moving body 52 is supported by one end of the transmission member 59, and the tip of the guide rod 58 connected to the other moving body 53 rotates to the other end of the transmission member 59. Supported as possible. Then, by operating the air cylinder 61 and moving one moving body 53 in one direction or the other direction, the other moving body 52 is moved close to and away from each other so as to move in the opposite direction of the one moving body 53. Moving.

前記両移動体５２，５３の上端には一対の予熱ブロック６３，６４が配設され、図３に示すように、両予熱ブロックの６３，６４の対向面は、所定幅で搬送方向に延在する加熱面６５ａ，６５ｂとして形成され、前記案内間隙２５がこの加熱面６５ａ，６５ｂの延在方向に沿って延びるように前記一対の遮へい板２２が配置されている。そして、前記移動体５２，５３の接近離間移動に伴い、予熱ブロック６３，６４が互いに接近離間移動され、予熱ブロック６３，６４の接近時には加熱面６５ａ，６５ｂが案内間隙２５から内側に引き込まれて下方において重合する重合部１０４に当接すること無く、わずかな隙間を経て臨むようになっている。なお、図６に示すように、予熱ブロック６３，６４内にはエア流路６６が貫設され、エア流路６６内を通過して加熱されたエアが加熱面に形成された複数の噴出孔から熱風を噴出して予熱ブロック６３，６４の接近時に、加熱面６５ａ，６５ｂの間を通過する重合部１０４をシールローラ２９によるシール温度より低い温度で加熱する。   A pair of preheating blocks 63 and 64 are disposed at the upper ends of the moving bodies 52 and 53, and as shown in FIG. 3, the opposing surfaces of the two preheating blocks 63 and 64 extend in the transport direction with a predetermined width. The pair of shielding plates 22 are arranged so that the guide gap 25 extends along the extending direction of the heating surfaces 65a and 65b. As the moving bodies 52 and 53 move closer and away, the preheating blocks 63 and 64 move closer to and away from each other. When the preheating blocks 63 and 64 approach, the heating surfaces 65a and 65b are drawn inward from the guide gap 25. It faces through a slight gap without coming into contact with the overlapping portion 104 that overlaps below. As shown in FIG. 6, an air flow channel 66 is provided in the preheating blocks 63 and 64, and a plurality of ejection holes in which air heated through the air flow channel 66 is formed on the heating surface. When the preheating blocks 63 and 64 approach each other, hot air is ejected from the heating section 65 to heat the overlapping portion 104 passing between the heating surfaces 65 a and 65 b at a temperature lower than the sealing temperature by the sealing roller 29.

図４に示すように、送り手段２７からシールローラ２９に向けた重合部１０４の通過ラインＳは、前記フィルム搬送中心ラインＣに対して傾斜する。その傾斜した前記通過ラインＳに沿って、予熱手段２８の各予熱ブロック６３、６４の各加熱面６５ａ，６５ｂで形成される図２に示す加熱部６５は、重合部１０４とわずかな隙間を隔てて平行に配置される。そのため、重合部１０４の通過時には、重合部１０４が加熱面６５ａ，６５ｂに触れることはなく、加熱面６５ａ，６５ｂは重合部１０４の進行を阻害しない。また、加熱面６５ａ，６５ｂと重合部１０４との隙間を少なくできるので効果的な予熱をおこなうことができる。   As shown in FIG. 4, the passing line S of the overlapping portion 104 from the feeding means 27 toward the seal roller 29 is inclined with respect to the film conveyance center line C. Along the inclined passage line S, the heating unit 65 shown in FIG. 2 formed by the heating surfaces 65a and 65b of the preheating blocks 63 and 64 of the preheating means 28 is separated from the overlapping unit 104 by a slight gap. Arranged in parallel. Therefore, when passing through the overlapping portion 104, the overlapping portion 104 does not touch the heating surfaces 65a and 65b, and the heating surfaces 65a and 65b do not hinder the progress of the overlapping portion 104. In addition, since the gap between the heating surfaces 65a and 65b and the overlapping portion 104 can be reduced, effective preheating can be performed.

次に前記シールローラ２９について図５を参照して説明する。なお、このシールローラ２９においては、送り手段２７の部材と同様な機能を有する部材には同じ符号を付して、詳細な説明を省略する。すなわち、このシールローラ２９は、固定ブロック３２と、支持軸３３と一体回動可能に配設された可動ブロック３４と、回転軸３６，３７、モータ４１、図示省略ギア伝達機構等を備えている。   Next, the seal roller 29 will be described with reference to FIG. In this seal roller 29, members having the same functions as those of the member of the feeding means 27 are denoted by the same reference numerals, and detailed description thereof is omitted. That is, the seal roller 29 includes a fixed block 32, a movable block 34 disposed so as to rotate integrally with the support shaft 33, rotary shafts 36 and 37, a motor 41, a gear transmission mechanism (not shown), and the like. .

前記固定ブロック３２に支持された回転軸３６の上端には第１加熱ローラ７１が配設され、可動ブロック３４に支持された回転軸３７の上端には第２加熱ローラ７２が配設されている。固定ブロック３２には補助ローラ７３が自由回転可能に支持されている。前記第１加熱ローラ７１と第２加熱ローラ７２とは、例えば、直径が６センチから８センチ程度の大きな径の同径に設定され、第１加熱ローラ７１が第２加熱ローラ７２よりその回転中心が下流側に位置ずれして配置される。また、補助ローラ７３は、両加熱ローラ７１,７２よりも小径となる、例えば、２．５センチから３．５センチ程度直径から形成され、第２加熱ローラ７２の回転中心より前記予熱手段２８側となる上流側に位置している。そして、可動ブロック３４に作用するばね部材４０の付勢力により、第２加熱ローラ７２の外周面と補助ローラ７３の外周面と第１加熱ローラ７１の外周面とにより、前記重合部１０４を所定の圧力で挟持すると共に、重合部１０４は、第１加熱ローラ７１と第２加熱ローラ７２の外周面に所定の区間圧接状態で巻き付けられて加熱される。シールローラ２９には、図示省略モータを駆動制御して可動ブロック３４を固定ブロック３２に対して傾動し、第２加熱ローラ７２を補助ローラ７３と第１加熱ローラ７１の外周面から離間させ、重合部１０４の挟持を解除する開閉動作機構（図示省略）が設けられる。それにより、フィルム１０２の搬送停止に合わせて開閉動作機構に設けたモータを作動制御して、重合部１０４のフィルム１０２が過度に加熱されて表面が溶けてしまうのを防止することができる。   A first heating roller 71 is disposed at the upper end of the rotating shaft 36 supported by the fixed block 32, and a second heating roller 72 is disposed at the upper end of the rotating shaft 37 supported by the movable block 34. . An auxiliary roller 73 is supported on the fixed block 32 so as to be freely rotatable. The first heating roller 71 and the second heating roller 72 are set to have the same diameter of, for example, a large diameter of about 6 cm to 8 cm, and the first heating roller 71 has a rotation center that is greater than that of the second heating roller 72. Is disposed at a position shifted downstream. Further, the auxiliary roller 73 has a smaller diameter than the both heating rollers 71 and 72, for example, a diameter of about 2.5 cm to 3.5 cm, and the preheating means 28 side from the rotation center of the second heating roller 72. It is located on the upstream side. Then, due to the urging force of the spring member 40 acting on the movable block 34, the outer peripheral surface of the second heating roller 72, the outer peripheral surface of the auxiliary roller 73, and the outer peripheral surface of the first heating roller 71, While being sandwiched by pressure, the overlapping portion 104 is wound around the outer circumferential surfaces of the first heating roller 71 and the second heating roller 72 in a predetermined section pressure state and heated. The seal roller 29 is driven and controlled by a motor (not shown) so that the movable block 34 is tilted with respect to the fixed block 32, and the second heating roller 72 is separated from the outer peripheral surfaces of the auxiliary roller 73 and the first heating roller 71. An opening / closing operation mechanism (not shown) for releasing the holding of the portion 104 is provided. Thereby, the operation of the motor provided in the opening / closing operation mechanism is controlled in accordance with the stop of the conveyance of the film 102, and the film 102 of the overlapping portion 104 can be prevented from being excessively heated to melt the surface.

モータ４１からギア連繋機構を介して相互に反対方向に回転駆動される第１加熱ローラ７１と第２加熱ローラ７２とは、重合部１０４を挟持して搬送方向下流に導き、また、補助ローラ７３は第２加熱ローラ７２とにより重合部１０４を挟持しているので該第２加熱ローラ７２の回転に追随して回転される。そして、重合部１０４は、補助ローラ７３上の巻付開始位置７８を経て第２加熱ローラ７２と補助ローラ７３とによる挟持位置７５から、第２加熱ローラ７２と第１加熱ローラ７１との挟持位置７６までの区間において第２加熱ローラ７２の外周面に圧接状態で巻き付き、更には第１加熱ローラ７１の外周面に所定区間巻き付いた後に、巻付終了位置７９を経て前記通路１０１を下流側へ向けて搬送される。   A first heating roller 71 and a second heating roller 72 that are rotationally driven in opposite directions from the motor 41 via a gear linking mechanism sandwich the overlapping section 104 and guide it downstream in the conveying direction, and an auxiliary roller 73. Since the overlapping portion 104 is sandwiched between the second heating roller 72 and the second heating roller 72, the rotation follows the rotation of the second heating roller 72. Then, the overlapping portion 104 passes through the winding start position 78 on the auxiliary roller 73, and the holding position 75 between the second heating roller 72 and the first heating roller 71 from the holding position 75 between the second heating roller 72 and the auxiliary roller 73. In the section up to 76, the outer peripheral surface of the second heating roller 72 is wound in a press-contact state, and after the predetermined section is wound around the outer peripheral surface of the first heating roller 71, the passage 101 is moved downstream through the winding end position 79. It is conveyed toward.

図３に示すように、通路１０１における重合部１０４の通過ラインＳは、重合部１０４がシールローラ２９を経て下流に搬送される際に、補助ローラ７３の外周の巻付開始位置７８，第２加熱ローラ７２と補助ローラ７３との間の重合部１０４の挟持位置７５，第１加熱ローラ７１と第２加熱ローラ７２との重合部１０４の挟持位置７６及び第１加熱ローラ７１の外周の巻付終了位置７９とに応じて、通路１０１の幅方向となる左右に変位する。それにより、前記一対の遮へい板２２の対向間隔である案内間隙２５は、予熱手段２８の下流側端部から前記送出手段３０を超えた搬送下流位置までの間に亘り前記重合部１０４が左右に変位する通過ラインＳに応じて、その通過ラインＳの左右の振れ幅と同等か、それよりわずかに幅広の間隔であって、重合部１０４が通過する際に、その進行を妨げることがなく、また、重合部１０４が左右に過度に振れてフィルム１０２の蛇行を伴うこと無く案内し得る間隙とし、本実施例では、一対の遮へい板２２の対向間隔は、重合部１０４の通過ラインＳが搬送上流部及び下流部のフィルム搬送中心ラインＣに沿って通過する部位が最も狭い間隙となり、重合部１０４が搬送中心ラインＣから左右に振れて通過する区間には幅広部Ｌを設けている。第２加熱ローラ７２と補助ローラ７３とによる重合部１０４の挟持位置７５及び第２加熱ローラ７２と第１加熱ローラ７１との重合部１０４の挟持位置７６は、前記通路１０１の搬送方向前後に隔てて配置される。また、重合部１０４がシールローラ２９の外周面に巻付けられ、巻付開始位置７８において前記フィルム搬送中心ラインＣから一側へ湾曲して張り出す振れ量Ｘ１が形成される。第１加熱ローラ７１への巻付終了位置７９においてフィルム搬送中心ラインＣから他側へ湾曲して張り出す振れ量Ｘ２は、搬送中心ラインＣからの左右のずれ量が張り出す振れ量Ｘ１と同一量に設定される。   As shown in FIG. 3, the passing line S of the overlapping portion 104 in the passage 101 has a winding start position 78 on the outer periphery of the auxiliary roller 73 and the second line when the overlapping portion 104 is conveyed downstream through the seal roller 29. The overlapping position 75 of the overlapping portion 104 between the heating roller 72 and the auxiliary roller 73, the holding position 76 of the overlapping portion 104 between the first heating roller 71 and the second heating roller 72, and the winding of the outer periphery of the first heating roller 71 Depending on the end position 79, the passage 101 is displaced to the left and right in the width direction. As a result, the guide gap 25, which is the spacing between the pair of shielding plates 22, extends from the downstream end of the preheating means 28 to the transport downstream position beyond the delivery means 30, and the overlapping portion 104 is laterally moved. Depending on the displacement of the passing line S, the distance between the left and right swing widths of the passing line S is slightly wider than that, and the progress of the overlapping portion 104 is not hindered when the overlapping portion 104 passes, Further, the overlapping portion 104 is excessively swung left and right, and the gap can be guided without accompanying the meandering of the film 102. In this embodiment, the interval between the pair of shielding plates 22 is conveyed by the passing line S of the overlapping portion 104. The portion passing along the film transport center line C in the upstream and downstream portions is the narrowest gap, and a wide portion L is provided in a section where the overlapping portion 104 swings from the transport center line C to the left and right.The sandwiching position 75 of the overlapping section 104 by the second heating roller 72 and the auxiliary roller 73 and the sandwiching position 76 of the overlapping section 104 of the second heating roller 72 and the first heating roller 71 are separated in the front and rear of the passage 101 in the transport direction. Arranged. In addition, the overlapping portion 104 is wound around the outer peripheral surface of the seal roller 29, and a deflection amount X1 that curves and protrudes from the film transport center line C to the one side at the winding start position 78 is formed. The runout amount X2 that curves and protrudes from the film transport center line C to the other side at the winding end position 79 to the first heating roller 71 is the same as the runout amount X1 that the left and right shift amounts from the transport center line C project. Set to quantity.

図５及び図７に示すように、前記第１加熱ローラ７１及び第２加熱ローラ７２の直下における円板面に面して、固定ブロック３２及び可動ブロック３４にはＩＨコイル８１が配置されている。そして、ＩＨコイル８１により、両加熱ローラ７１，７２が誘導加熱される。また、第１加熱ローラ７１からの輻射熱並びに第２加熱ローラ７２とによる重合部１０４の挟持時における熱伝導により補助ローラ７３は、各加熱ローラ７１、７２より低い温度に加熱される。   As shown in FIGS. 5 and 7, an IH coil 81 is disposed on the fixed block 32 and the movable block 34 so as to face the disk surface immediately below the first heating roller 71 and the second heating roller 72. . Then, both the heating rollers 71 and 72 are induction-heated by the IH coil 81. Further, the auxiliary roller 73 is heated to a temperature lower than that of each of the heating rollers 71 and 72 by radiant heat from the first heating roller 71 and heat conduction when the overlapping portion 104 is sandwiched by the second heating roller 72.

両加熱ローラ７１，７２内には、熱電対（図示省略）が挿着されており、この熱電対には、前記回転軸３６、３７と一体回転する受電部４２と、受電部４２の下方にわずかな隙間を隔てて近接配置され、固定ブロック３２と可動ブロック３４との夫々に配設された給電部４３とを有する非接触継電手段４４が接続されている。両加熱ローラ７１，７２の温度は熱電対により検出されて、非接触継電手段４４を経て温調制御部（図示省略）に信号入力され、その検出結果に応じて各加熱ローラ７１，７２を個別に加熱して、適正な加熱温度管理を行うよう温調手段によってシール温度制御が行われる。また、前記予熱ブロック６３，６４にも熱電対（図示省略）が挿着され、加熱ローラ７１，７２と同様に温度制御が行われる。ここで、第１，第２加熱ローラ７１，７２は、例えば１４５℃に前後に加熱されるように温度管理され、前記予熱ブロック６３，６４は前記各加熱ローラ７１，７２より少し低い温度となる、例えば、１４０℃前後に加熱されるように温調手段により温度制御されるようになっている。   Thermocouples (not shown) are inserted in the heating rollers 71 and 72. The thermocouple includes a power receiving unit 42 that rotates integrally with the rotary shafts 36 and 37, and a lower part of the power receiving unit 42. A non-contact relay means 44 having a power feeding portion 43 that is disposed close to each other with a small gap and is disposed on each of the fixed block 32 and the movable block 34 is connected. The temperature of both the heating rollers 71 and 72 is detected by a thermocouple, and a signal is input to the temperature control unit (not shown) via the non-contact relay means 44, and each heating roller 71 and 72 is turned on according to the detection result. The seal temperature control is performed by the temperature control means so as to perform individual heating and appropriate heating temperature management. Thermocouples (not shown) are also inserted into the preheating blocks 63 and 64, and temperature control is performed in the same manner as the heating rollers 71 and 72. Here, the first and second heating rollers 71 and 72 are temperature-controlled so as to be heated back and forth at, for example, 145 ° C., and the preheating blocks 63 and 64 have a slightly lower temperature than the respective heating rollers 71 and 72. For example, the temperature is controlled by temperature control means so as to be heated to around 140 ° C.

図４に示すように、前記送出手段３０は、回転軸３６，３７の上端に配設した送出ローラ９１，９２を除いて前記送り手段２７と同様な構成である。この送出ローラ９１，９２には必要に応じてその外周面に、重合部１０４に対して格子状、横筋目、縦筋目等のシール目を形成するための凹凸が形成される。この凹凸によって重合部に所定の筋目を形成した縦シールを施すことができる。   As shown in FIG. 4, the delivery means 30 has the same configuration as the delivery means 27 except for delivery rollers 91 and 92 disposed at the upper ends of the rotation shafts 36 and 37. The delivery rollers 91 and 92 are provided with irregularities on the outer peripheral surface thereof to form seals such as lattices, horizontal stripes, and vertical stripes on the overlapping portion 104 as necessary. A vertical seal in which a predetermined line is formed on the overlapping portion can be provided by the unevenness.

次に以上のように構成された縦シール装置の作用を説明する。
物品１０３を内包するように円筒状に形成されたフィルム１０２は、その両端が前記各遮へい板２２の案内間隙２５より下方に引き込み案内され、その下部の重合部１０４が夫々解放状態の送り手段２７の送りローラ３８，３９間、予熱手段２８の予熱ブロック６３，６４間、シールローラ２９の第１、第２加熱ローラ７１，７２と，補助ローラ７３との間、送出手段３０の送出ローラ９１，９２間を経て、さらに下流に向けて案内される通過ラインＳとなる経路を辿るように配置される。次いで、前記送り手段２７と、送出手段３０とをレバーハンドル３５の回動操作で、また、シールローラ２９と予熱手段２８とを、モータ（図示省略）及びシリンダ６１とを作動させることによって、夫々重合部１０４側の接近位置に移動させることで、重合部１０４が送りローラ３８，３９で挟持され、予熱手段２８の加熱面６５ａ，６５ｂの間を経てシールローラ２９における補助ローラ７３と第１加熱ローラ７１と第２加熱ローラ７２とで挟持されて補助ローラ７３の巻付開始位置７８から第１加熱ローラ７１の巻付終了位置７９までに亘って、各ローラの外周に所定の区間圧接状態で巻付けられると共に、送出ローラ９１，９２間によって挟持される。また、ベッド２３の開放部２４から案内間隙２５内に引き込まれた重合部１０４が、予熱手段２８の左右予熱ブロック６３，６４の各加熱面６５ａ，６５ｂの間を経て送出ローラ９１，９２の挟持位置を超えた搬送下流位置までの間に亘り、左右に変位する通過ラインＳを辿るのに対応して、遮へい板２２の案内間隙２５には重合部１０４の下流に向けた通過ラインの左右振れ量に応じた大きさの幅広部Lが設けられており、それによって重合部１０４は搬送時にその案内間隙２５の間を通過して、フィルム１０２の搬送を阻害することなく、また、フィルム１０２の下流へ搬送される際に重合部１０４を挟んだ左右位置において搬送方向に沿って重合部の左右を案内することでフィルム１０２の蛇行を防止することができる。 Next, the operation of the vertical sealing device configured as described above will be described.
The film 102 formed in a cylindrical shape so as to enclose the article 103 is guided by drawing both ends thereof downward from the guide gaps 25 of the respective shielding plates 22, and the lower overlapping portions 104 are the feeding means 27 in the released state. Between the feeding rollers 38 and 39, between the preheating blocks 63 and 64 of the preheating means 28, between the first and second heating rollers 71 and 72 of the seal roller 29 and the auxiliary roller 73, between the feeding rollers 91 and After passing through 92, it arrange | positions so that the path | route used as the passing line S guided further downstream may be followed. Next, the feeding means 27 and the sending means 30 are operated by rotating the lever handle 35, and the seal roller 29 and the preheating means 28 are operated by a motor (not shown) and a cylinder 61, respectively. By moving to the approaching position on the superposition unit 104 side, the superposition unit 104 is sandwiched between the feed rollers 38 and 39, and passes between the heating surfaces 65 a and 65 b of the preheating means 28 and the auxiliary roller 73 and the first heating in the seal roller 29. The roller 71 and the second heating roller 72 are sandwiched between the winding start position 78 of the auxiliary roller 73 and the winding end position 79 of the first heating roller 71 in a predetermined section pressure contact state on the outer periphery of each roller. At the same time, it is wound between the delivery rollers 91 and 92. Further, the overlapping portion 104 drawn into the guide gap 25 from the opening portion 24 of the bed 23 sandwiches the delivery rollers 91 and 92 through the space between the heating surfaces 65a and 65b of the left and right preheating blocks 63 and 64 of the preheating means 28. Corresponding to following the passing line S that is displaced to the left and right over the transport downstream position beyond the position, the guide line 25 of the shielding plate 22 has a left and right swing of the passing line toward the downstream of the overlapping portion 104. A wide portion L having a size corresponding to the amount is provided, so that the overlapping portion 104 passes between the guide gaps 25 at the time of conveyance, and does not obstruct the conveyance of the film 102, and the film 102 The meandering of the film 102 can be prevented by guiding the left and right sides of the overlapping portion along the transfer direction at the left and right positions sandwiching the overlapping portion 104 when transported downstream.

一対の送りローラ３８，３９を経て予熱ブロック６３，６４間を通過することで予熱された重合部１０４は、シールローラ２９に到り第２加熱ローラ７２と補助ローラ７３との間に送り込まれ、補助ローラ７３との巻付開始位置７８を経て、挟持位置７５から第２加熱ローラ７２の外周面に巻き付いた後に第１加熱ローラ７１と第２加熱ローラ７２との挟持位置７６を経て第１加熱ローラ７１の外周面に所定の区間巻き付き、その巻付終了位置７９に至る。そして、第２加熱ローラ７２と第１加熱ローラ７１との巻付け区間において各加熱ローラ７２，７１の外周面に圧接状態で所定区間巻付いた重合部１０４は、各加熱ローラ７２〜７１と補助ローラ７３からの加熱及び挟持圧力によって溶着される。つまり、加熱面６５ａ，６５ｂ間を通過して予熱された重合部１０４は、フィルム１０２の搬送に伴って補助ローラ７３と第２加熱ローラ７２とによって、第２加熱ローラ７２の外周面と第１加熱ローラ７１の外周面とに所定の区間圧接された状態で搬送される。このようにして、重合部１０４が溶着されて縦シールが施される。   The overlapping portion 104 preheated by passing between the preheating blocks 63 and 64 through the pair of feed rollers 38 and 39 reaches the seal roller 29 and is sent between the second heating roller 72 and the auxiliary roller 73, After the winding start position 78 with the auxiliary roller 73, the first heating is performed after the winding position 75 between the first heating roller 71 and the second heating roller 72 after winding from the clamping position 75 to the outer peripheral surface of the second heating roller 72. A predetermined section is wound around the outer peripheral surface of the roller 71 and reaches a winding end position 79. In the winding section between the second heating roller 72 and the first heating roller 71, the overlapping portion 104 wound around the outer peripheral surface of each heating roller 72, 71 in a predetermined state is in contact with each heating roller 72 to 71. It is welded by heating from the roller 73 and clamping pressure. That is, the overlapping portion 104 preheated by passing between the heating surfaces 65a and 65b is moved from the outer peripheral surface of the second heating roller 72 to the first heating roller 72 by the auxiliary roller 73 and the second heating roller 72 as the film 102 is conveyed. It is conveyed in a state where it is pressed against the outer peripheral surface of the heating roller 71 by a predetermined interval. In this way, the overlapping portion 104 is welded and a vertical seal is applied.

溶着された重合部１０４は熱による軟化状態を維持したまま、シールローラ２９から送出手段３０へ到り、送出ローラ９１、９２で挟圧されて、重合部１０４に所定の筋目や格子状などのシール目が形成される。その際に、非加熱の送出ローラ９１、９２によってフィルム１０２が早期に冷却されて密封性に優れたシール強度の高いシールを施すことができる。また、冷却によって重合部の表面にシール皺などが生ずることなく包装の見栄えを損ねることの無い綺麗なシールとすることができる。フィルム１０２は送出手段３０からさらに下流側に送られ、フィルム１０２中に収容されている物品１０３の搬送方向前後位置において図示省略横シール機構によってフィルム１０２搬送方向と交差する方向に横シール・切断がなされる。それにより、袋中に物品１０３が密封包装されたピロー包装品を得ることができる。   The welded overlapped portion 104 reaches the delivery means 30 from the seal roller 29 while maintaining a softened state due to heat, and is sandwiched between the feed rollers 91 and 92 so that the overlapped portion 104 has a predetermined streak or lattice shape. A seal is formed. At that time, the film 102 is cooled early by the non-heated delivery rollers 91 and 92, and a seal with high sealing strength and excellent sealing performance can be applied. In addition, it is possible to obtain a clean seal that does not impair the appearance of the packaging without causing seal flaws or the like on the surface of the overlapped portion due to cooling. The film 102 is sent further downstream from the delivery means 30 and is laterally sealed and cut in a direction crossing the film 102 transport direction by a lateral seal mechanism (not shown) at the front and rear positions in the transport direction of the article 103 accommodated in the film 102. Made. Thereby, a pillow package product in which the article 103 is hermetically packaged in a bag can be obtained.

フィルム１０２への物品１０３の供給遅れなどにより、フィルム１０２の搬送が停止されるのに合わせて、予熱手段２８の各予熱ブロック６３、６４の加熱面６５ａ，６５ｂが相互に離間すると共に熱風の噴付けが休止されて、重合部１０４に対する加熱面６５ａ，６５ｂからの予熱作用が弱められる。また、そのフィルム搬送の停止時間が規定時間を超える時にはシールローラ２９の第２加熱ローラ７２が補助ローラ７３と第１加熱ローラ７１とから離間されて、補助ローラ７３と第１加熱ローラ７１とによる重合部１０４の挟持を解除するよう作動される。それにより、第２加熱ローラ７２から第１加熱ローラ７１に亘ってその外周部に巻付いた重合部１０４の圧接状態が解放されて重合部の加熱が弱められる。この時、重合部１０４は、補助ローラ７３と第２加熱ローラ７２とで一側が軽接触状態で支持され、他側を第１加熱ローラ７１が軽接触状態となって支持され、重合部１０４は両側からの挟持圧が解放されても、弛みによってシール再開時における挟持位置のずれが生じてしまうことがない。このようにすることで、フィルム１０２の搬送停止時には、重合部１０４の過加熱を抑制できる。そして、フィルム搬送開始時には予熱手段２８を重合部１０４に近接する位置まで移動すると共に熱風の噴付けを再開し、また、シールローラ２９が重合部１０４を挟持して、フィルムの連続搬送に伴って重合部１０４に縦シールを施すよう横形製袋充填機の運転が継続される。   As the conveyance of the film 102 is stopped due to a delay in the supply of the article 103 to the film 102, the heating surfaces 65a and 65b of the preheating blocks 63 and 64 of the preheating means 28 are separated from each other and hot air is jetted. The attachment is stopped and the preheating action from the heating surfaces 65a and 65b to the overlapping portion 104 is weakened. When the film conveyance stop time exceeds a specified time, the second heating roller 72 of the seal roller 29 is separated from the auxiliary roller 73 and the first heating roller 71, and the auxiliary roller 73 and the first heating roller 71 It is actuated to release the holding of the overlapping portion 104. As a result, the pressure contact state of the overlapping portion 104 wound around the outer peripheral portion from the second heating roller 72 to the first heating roller 71 is released, and the heating of the overlapping portion is weakened. At this time, the superposition unit 104 is supported by the auxiliary roller 73 and the second heating roller 72 in a light contact state on one side, and the other side is supported by the first heating roller 71 in a light contact state. Even if the clamping pressure from both sides is released, the clamping position does not shift when the seal is restarted due to the loosening. By doing in this way, when the conveyance of the film 102 is stopped, overheating of the superposition part 104 can be suppressed. At the start of film conveyance, the preheating means 28 is moved to a position close to the superposition unit 104 and hot air spraying is resumed. Further, the seal roller 29 sandwiches the superposition unit 104, and the film is continuously conveyed. The operation of the horizontal bag making and filling machine is continued so as to apply a vertical seal to the superposition unit 104.

以上の構成を採用した本実施形態では以下の効果がある。
（１）重合部１０４に対する加熱は、補助ローラ７３の巻付開始位置７８を経て、補助ローラ７３と第２加熱ローラ７２とによる挟持位置７５から第２加熱ローラ７２の外周面を経て、第１加熱ローラ７１と第２加熱ローラ７２との挟持位置７６を更に越えた第１加熱ローラ７１外周面における巻付終了位置７９まで亘って重合部１０４がシールローラ２９の夫々の外周面に圧接された状態でシールされる。従って、加熱されたローラ７１，７２に対して重合部１０４が両側から均等に加圧された状態で加熱されると共に、フィルム搬送中に重合部１０４が加熱ローラ７１，７２に接触して進行する区間が長く設定できる。すなわち、搬送中のフィルム１０２でも、長い時間を使って所定の加圧状態で重合部１０４を加熱してシールするので、たとえ高速包装であってもシール温度を低く設定することができる。このため、重合部１０４の表面が高温で溶けたり、シール皺などが生じたりすることなく、綺麗な外観で、かつ密封性の高い強固な縦シールを施すことができる。 The present embodiment employing the above configuration has the following effects.
(1) Heating to the superposition unit 104 passes through the winding start position 78 of the auxiliary roller 73, passes through the outer peripheral surface of the second heating roller 72 from the clamping position 75 between the auxiliary roller 73 and the second heating roller 72, The overlapping portion 104 was pressed against each outer peripheral surface of the seal roller 29 over the winding end position 79 on the outer peripheral surface of the first heating roller 71 beyond the sandwiching position 76 between the heating roller 71 and the second heating roller 72. Sealed in state. Therefore, the superposition unit 104 is heated in a state where the heated rollers 71 and 72 are uniformly pressed from both sides, and the superposition unit 104 is in contact with the heat rollers 71 and 72 during film conveyance. The section can be set longer. That is, even in the film 102 being conveyed, the polymerization portion 104 is heated and sealed in a predetermined pressure state over a long time, so that the sealing temperature can be set low even in high-speed packaging. For this reason, it is possible to provide a strong vertical seal with a clean appearance and high sealing performance without melting the surface of the overlapped portion 104 at a high temperature or causing seal wrinkles.

（２）シール温度を低く設定できるため、重合部１０４の過度な加熱がなくなり、高速包装する際にも、フィルム１０２にシール皺等が発生するのを防止して、良好なシールを得ることができる。   (2) Since the sealing temperature can be set low, excessive heating of the overlapping portion 104 is eliminated, and even when high-speed packaging is performed, it is possible to prevent the occurrence of seal wrinkles on the film 102 and obtain a good seal. it can.

（３）重合部１０４に対するシール温度を低く設定できるため、包装される物品１０３の供給が間に合わずに、フィルム１０２の搬送を一時休止する場合等で、フィルム１０２の搬送を、例えば、数秒以下の極短時間休止する場合などでは、第１，第２加熱ローラ７１，７２の挟持解除動作を行わなくても、シールのための熱によって重合部１０４におけるフィルム１０２の表面まで溶けてしまうことなく、良好なシール状態を保つことができる。   (3) Since the sealing temperature for the superposition unit 104 can be set low, the film 102 can be transported for several seconds or less, for example, when the transportation of the film 102 is temporarily stopped without being supplied in time for the packaged article 103. In the case of resting for a very short time, even if the nipping and releasing operation of the first and second heating rollers 71 and 72 is not performed, the surface of the film 102 in the overlapping portion 104 is not melted by the heat for sealing, A good sealing state can be maintained.

（４）補助ローラ７３を小径に形成したために、シールローラ２９全体を小形化できる。
（５）小径の補助ローラ７３を第１加熱ローラ７１の上流側に設けたので、シールローラ２９の上流側に予熱手段２８を設ける場合には、シールローラ２９を予熱手段２８に接近させることができる。従って、予熱手段２８とシールローラ２９との間における重合部１０４の温度低下を抑制できる。このため、温度低下を見越して予熱手段２８及びシールローラ２９のシール温度を高く設定しておく必要がなく、前記と同様に重合部１０４の表面が高温で溶けたりすることなく、綺麗な外観で、かつ密封性の高い強固な縦シールを施すことができる。 (4) Since the auxiliary roller 73 has a small diameter, the entire seal roller 29 can be reduced in size.
(5) Since the small-diameter auxiliary roller 73 is provided on the upstream side of the first heating roller 71, when the preheating means 28 is provided on the upstream side of the seal roller 29, the seal roller 29 can be brought close to the preheating means 28. it can. Therefore, a decrease in the temperature of the overlapping portion 104 between the preheating means 28 and the seal roller 29 can be suppressed. For this reason, it is not necessary to set the sealing temperature of the preheating means 28 and the sealing roller 29 high in anticipation of the temperature decrease, and the surface of the overlapping portion 104 does not melt at a high temperature as described above, and the appearance is beautiful. In addition, a strong vertical seal with high sealing performance can be applied.

（６）シールローラ２９による加熱に先立ち予熱手段２８によって重合部１０４をシール温度よりは低い温度に加熱するので、シールローラ２９での加熱するシール温度設定を低く抑えることができる。そのため、前記と同様の効果を得ることができる。   (6) Since the superposition unit 104 is heated to a temperature lower than the seal temperature by the preheating means 28 prior to the heating by the seal roller 29, the setting of the seal temperature to be heated by the seal roller 29 can be kept low. Therefore, the same effect as described above can be obtained.

（７）重合部１０４は第１加熱ローラ７１と第２加熱ローラ７２とより両側から加熱されるため、シール温度が低くても、重合部１０４の内面が溶着温度に達するように適正に加熱でき、密封性が良好で強固な縦シールを得ることができる。   (7) Since the overlapping part 104 is heated from both sides by the first heating roller 71 and the second heating roller 72, even if the sealing temperature is low, the overlapping part 104 can be heated appropriately so that the inner surface of the overlapping part 104 reaches the welding temperature. Further, it is possible to obtain a strong vertical seal with good sealing performance.

（８）第１，第２加熱ローラ７１，７２を大径に形成したことにより、第２加熱ローラ７２と第１加熱ローラ７１との外周面とにより重合部１０４を長い区間圧接して加熱することができる。このため、重合部１０４に対するシール温度を低く設定しても、また、重合部１０４に対する挟持圧力を従来方式に比して弱めに設定しても、密封性の高い綺麗なシールを得ることができる。   (8) Since the first and second heating rollers 71 and 72 are formed to have a large diameter, the overlapping portion 104 is heated by being pressed in a long section by the outer peripheral surface of the second heating roller 72 and the first heating roller 71. be able to. For this reason, even if the sealing temperature for the overlapping portion 104 is set low, and even when the clamping pressure for the overlapping portion 104 is set lower than in the conventional method, a clean seal with high sealing performance can be obtained. .

（９）送り手段２７からシールローラ２９に向けた重合部１０４の通過ラインＳは、前記フィルム搬送中心ラインＣに対して傾斜する。その傾斜した通過ラインＳに沿って、予熱手段２８の予熱ブロック６３、６４の加熱面６５ａ，６５ｂを平行に配置している。それにより、加熱面６５ａ，６５ｂを、より重合部１０４に接近させることができる隙間にすることができ、重合部１０４に対する加熱面６５ａ，６５ｂによる予熱効率を高めることができる。   (9) The passing line S of the overlapping portion 104 from the feeding means 27 toward the seal roller 29 is inclined with respect to the film conveyance center line C. Along the inclined passing line S, the heating surfaces 65a and 65b of the preheating blocks 63 and 64 of the preheating means 28 are arranged in parallel. Thereby, the heating surfaces 65a and 65b can be formed as gaps that can be brought closer to the overlapping portion 104, and the preheating efficiency by the heating surfaces 65a and 65b for the overlapping portion 104 can be increased.

（１０）重合部１０４が、補助ローラ７３との巻付開始位置７８を経て、挟持位置７５から第１加熱ローラ７１の外周面における巻付終了位置７９へ至るまでに、その重合部１０４が、第２加熱ローラ７２の外周面への巻付きにより前記フィルムの搬送中心ラインＣから幅方向一側へ変位する振れ量Ｘ１と、第１加熱ローラ７１の外周面への巻付きによりフィルムの搬送中心ラインＣから幅方向他側へ変位する振れ量Ｘ２とを、同じ量に設定しており、そして、両加熱ローラ７１,７２により重合部１０４の左右両側が加熱される。したがって、加熱によって重合部１０４で重なる一側のフィルムが片伸びせず、そのようなフィルムの片伸びが要因で下流側へのフィルムの搬送時にフィルムが蛇行してしまうことがない。   (10) The overlapping portion 104 passes through the winding start position 78 with the auxiliary roller 73 and reaches from the clamping position 75 to the winding end position 79 on the outer peripheral surface of the first heating roller 71. A deflection amount X1 that is displaced from the film conveyance center line C to one side in the width direction due to winding around the outer peripheral surface of the second heating roller 72, and a film conveyance center due to winding around the outer circumferential surface of the first heating roller 71. The shake amount X2 displaced from the line C to the other side in the width direction is set to the same amount, and both the left and right sides of the overlapping portion 104 are heated by both the heating rollers 71 and 72. Therefore, the film on one side that overlaps at the polymerization portion 104 is not stretched by heating, and the film does not meander when the film is transported to the downstream side due to such stretch of the film.

（１１）案内間隙２５は、送りローラ３８，３９の挟持位置から送出ローラ９１，９２の挟持位置までの間に亘る重合部１０４の通過ラインが左右に振れる振れ幅に応じて、重合部１０４の通過を許容し得る大きな幅広部Ｌを設けている。それにより、重合部１０４の通過ラインが搬送中心ラインＣから左右に振れても重合部を左右からガイドして蛇行を防止するよう良好に下流側へ案内し得る。   (11) The guide gap 25 corresponds to the width of the overlapping portion 104 according to the deflection width in which the passing line of the overlapping portion 104 swings from side to side between the holding position of the feeding rollers 38 and 39 and the holding position of the sending rollers 91 and 92. A large wide portion L that can allow passage is provided. As a result, even if the passing line of the overlapping portion 104 swings left and right from the conveyance center line C, the overlapping portion can be guided to the downstream side well so as to prevent meandering by guiding the overlapping portion from the left and right.

（１２）ベッド２３は、予熱手段２８やシールローラ２９からの熱による悪影響をフィルムに及ばさないよう遮へいする遮へい板２２を備え、また、遮へい板２２は、筒状フィルム１０２に収容された物品１０３が載置されて搬送される際の搬送ベッドとしても機能する。なお、重合部１０４の重ね場所が上方または左右のいずれかとなる場合においても、対応して配置される筒状フィルムとの間に遮へい板２２を配置してフィルムへの熱影響を防止することができる。   (12) The bed 23 includes a shielding plate 22 that shields the film from adverse effects due to heat from the preheating means 28 and the seal roller 29. The shielding plate 22 is an article accommodated in the tubular film 102. It also functions as a transport bed when 103 is placed and transported. Even when the overlapping portion of the overlapping portion 104 is either upward or left and right, it is possible to prevent the thermal effect on the film by disposing the shielding plate 22 between the corresponding cylindrical films. it can.

（１３）フィルム１０２の搬送が停止されるのに合わせて、予熱手段２８の各予熱ブロック６３、６４の加熱面６５ａ，６５ｂからの熱風の噴付けが休止される。従って重合部１０４に対する予熱作用を弱め、前記同様に過度な加熱を防止することができる。   (13) As the conveyance of the film 102 is stopped, the spraying of hot air from the heating surfaces 65a and 65b of the preheating blocks 63 and 64 of the preheating means 28 is stopped. Accordingly, it is possible to weaken the preheating action on the overlapping portion 104 and prevent excessive heating as described above.

（１４）フィルムの搬送停止時間が規定時間を超える時にはシールローラ２９による重合部１０４の挟持を解除するようにした。その際には、第２加熱ローラ７２から第１加熱ローラ７１に亘ってその外周部に巻付いた重合部１０４の圧接状態が解放され、重合部１０４の一側が補助ローラ７３と第２加熱ローラ７２との外周面において軽接触状態で支持され、重合部１０４の他側は第２加熱ローラ７２の外周面に軽接触状態で支持される。それにより、重合部１０４の加熱が弱められ、重合部１０４は両側からの挟持圧が解放されても、弛みによってシール再開時における挟持位置のずれが生じてしまうことがない。   (14) When the film conveyance stop time exceeds the specified time, the overlapping of the overlapping portion 104 by the seal roller 29 is released. At that time, the pressure contact state of the overlapping portion 104 wound around the outer peripheral portion from the second heating roller 72 to the first heating roller 71 is released, and one side of the overlapping portion 104 is connected to the auxiliary roller 73 and the second heating roller. 72 is supported in a light contact state on the outer peripheral surface with 72, and the other side of the overlapping portion 104 is supported on the outer peripheral surface of the second heating roller 72 in a light contact state. Thereby, the heating of the overlapping portion 104 is weakened, and even if the overlapping pressure of the overlapping portion 104 is released from both sides, the holding position is not shifted due to the loosening when the sealing is resumed.

（１５）予熱手段２８においては、各予熱ブロック６３，６４の加熱面６５ａ，６５ｂから熱風を噴出して重合部１０４を適切に予熱することができる。これにより、シールローラによるシール温度を低く設定することができ、前記同様に綺麗なシールを得ることができる。 (15) In the preheating means 28, hot air can be ejected from the heating surfaces 65a and 65b of the preheating blocks 63 and 64 to appropriately preheat the overlapping portion 104. Thereby, the sealing temperature by the sealing roller can be set low , and a clean seal can be obtained as described above.

（１６）予熱手段２８は、フィルム１０２の搬送停止時には、各予熱ブロック６３，６４の加熱面６５ａ，６５ｂを重合部１０４から離間するようにしている。従って、フィルムの同じ個所を連続して加熱し続けられてフィルムが過度に加熱されて重合部１０４が熱で縮れたり、表面が溶けてしまったりといった事態を防止することができる。   (16) The preheating means 28 separates the heating surfaces 65 a and 65 b of the preheating blocks 63 and 64 from the overlapping portion 104 when the conveyance of the film 102 is stopped. Therefore, it is possible to prevent a situation in which the same portion of the film is continuously heated, the film is excessively heated, the superposed portion 104 is shrunk by heat, or the surface is melted.

（１７）フィルム１０２の搬送停止時には、予熱手段２８の各予熱ブロック６３，６４の加熱面６５ａ，６５ｂとシールローラ２９の第２加熱ローラ７２とを重合部１０４に対して熱による悪影響が及ぼされない、離間した位置へ移動させることができる。従って、重合部１０４のフィルム１０２が過度に加熱されて縮れたり、表面が溶融してしまったりするのを防止することができる。   (17) When the conveyance of the film 102 is stopped, the heating surfaces 65a and 65b of the preheating blocks 63 and 64 of the preheating means 28 and the second heating roller 72 of the seal roller 29 are not adversely affected by heat. , Can be moved to a separated position. Therefore, it can prevent that the film 102 of the superposition | polymerization part 104 is heated too much and shrinks, or the surface melt | dissolves.

（１８）ベッド２３には重合部１０４をシールローラ２９等で挟持させるために、フィルム１０２の端縁部を内側に引き込み、重合部の搬送下流への通過を許容する案内間隙２５が形成され、案内間隙２５は重合部１０４の下流側への進行を許容し、その通過時に左右からガイドし得る隙間に設定されている。このため、重合部１０４が蛇行することなく、円滑に下流側へ案内される。   (18) The bed 23 is formed with a guide gap 25 that draws the edge of the film 102 inward to allow the overlapping portion 104 to be sandwiched between the sealing rollers 29 and the like and allows the overlapping portion to pass downstream. The guide gap 25 is set to be a gap that allows the overlapping portion 104 to travel downstream and can be guided from the left and right when passing. For this reason, the overlapping portion 104 is smoothly guided to the downstream side without meandering.

（１９）送出ローラ９１，９２を設けてシール後の重合部１０４にシール目を形成することができる。
（２０）シールローラで加熱された重合部１０４を非加熱の送出ローラ９１、９２で挟持してフィルム１０２を早期に冷却できるので、密封性に優れたシール強度の高いシールを得ることができる。 (19) The feed rollers 91 and 92 can be provided to form a seal in the overlapped portion 104 after sealing.
(20) Since the overlapping portion 104 heated by the seal roller can be sandwiched between the non-heated delivery rollers 91 and 92 and the film 102 can be cooled at an early stage, it is possible to obtain a seal with excellent sealing performance and high sealing strength.

本発明は前記実施形態に限定されるものではなく、本発明の主旨の範囲内において種々の実施形態を採用し得るものであって、例えば、以下の態様で具体化することも可能である。   The present invention is not limited to the above-described embodiment, and various embodiments can be adopted within the scope of the gist of the present invention. For example, the present invention can be embodied in the following modes.

・本実施例では、フィルム１０２の両端縁部を下方において重合した重合部１０４とする形態の横形製袋充填機に適用した場合で例示したが、これに限らず、帯状フィルムの幅方向両端縁を上方または左右のいずれかで重合した重合部１０４とする場合や、あるいは、２枚の帯状フィルムを重ねた上下または左右で重ねた重合端縁部についての重合部１０４に縦シールを施す横形または縦形その他の製袋充填機に採用してもよい。   In the present embodiment, the case where the both end edges of the film 102 are applied to a horizontal bag making and filling machine in the form of the overlapping part 104 polymerized below is exemplified, but the present invention is not limited thereto, and both end edges in the width direction of the belt-like film Or a horizontal shape in which a vertical seal is applied to the overlapping portion 104 of the overlapping edge portion where two belt-like films are overlapped vertically or horizontally, You may employ | adopt for a vertical type and other bag making and filling machines.

・予熱手段２８の予熱ブロック６３，６４に加熱面６５ａ，６５ｂとしての溝を形成して、重合部１０４がその溝内を通過するようにする。この場合、搬送停止時に予熱ブロックが重合部から離間する方向へ退避するように構成することが好ましい。   -Grooves as heating surfaces 65a and 65b are formed in the preheating blocks 63 and 64 of the preheating means 28 so that the overlapping portion 104 passes through the grooves. In this case, it is preferable that the preheating block is retracted in a direction away from the overlapping portion when the conveyance is stopped.

・予熱手段２８または送出手段３０のうちのいずれかを省略すること。   -Omit either the preheating means 28 or the delivery means 30.

２２…遮へい板、２３…ベッド、２５…案内間隙、２７…送り手段、２８…予熱手段、２９…シールローラ、３０…送出手段、３８、３９…送りローラ、６３，６４…予熱ブロック、６５ａ，６５ｂ…加熱面、７１…第１加熱ローラ、７２…第２加熱ローラ、７３…補助ローラ、７５，７６…挟持位置、７８…巻付開始位置、７９…巻付終了位置、８１…加熱手段、９１，９２…送出ローラ、１０１…通路、１０２…フィルム、１０４…重合部、Ｌ…幅広部、Ｓ…通過ライン、Ｘ１，Ｘ２…量。   22 ... shielding plate, 23 ... bed, 25 ... guide gap, 27 ... feeding means, 28 ... preheating means, 29 ... sealing roller, 30 ... sending means, 38, 39 ... feeding roller, 63, 64 ... preheating block, 65a, 65b ... Heating surface, 71 ... First heating roller, 72 ... Second heating roller, 73 ... Auxiliary roller, 75, 76 ... Nipping position, 78 ... Winding start position, 79 ... Winding end position, 81 ... Heating means, 91, 92 ... Delivery roller, 101 ... Passage, 102 ... Film, 104 ... Superposition part, L ... Wide part, S ... Passing line, X1, X2 ... Quantity.

Claims (4)

フィルムの重合部を挟持して搬送する送り手段と、
その下流に配設され前記重合部を加熱する予熱手段と、
その下流に配設されフィルムの搬送中に重合部を加熱してシールするシールローラを設けた縦シール装置において、
前記予熱手段は、
前記重合部を挟んで近接して配置される加熱面を備えた予熱ブロックを備え、
その加熱面を前記送り手段における重合部の挟持部から、前記シールローラにおける補助ローラへの巻付開始位置までに至る傾斜した重合部の通過ラインに沿って平行に配置し、
前記シールローラには、前記重合部を挟持して相互に異なる方向に回転駆動される第１、第２加熱ローラと、
第１加熱ローラの上流側において第２加熱ローラとで前記重合部を挟持するよう自由回転可能に支持され、第１加熱ローラ及び第２加熱ローラより小径に形成した前記補助ローラとを備え、
前記第１加熱ローラは第２加熱ローラの回転中心より下流に配置され、前記第１加熱ローラの第２加熱ローラとによる重合部の挟持位置は、前記補助ローラによる重合部の挟持位置より下流に離間して配置されるようにした
製袋充填機における縦シール装置。 A feeding means for sandwiching and transporting the overlapping portion of the film ;
Preheating means disposed downstream heats the overlapping portion of their,
In a vertical sealing device provided with a sealing roller that is disposed downstream thereof and heats and seals the overlapping portion during film conveyance,
The preheating means includes
Comprising a preheating block having a heating surface arranged in close proximity with the overlapping portion interposed therebetween,
The heating surface is arranged in parallel along the passing line of the overlapping overlapping portion extending from the sandwiching portion of the overlapping portion in the feeding means to the winding start position on the auxiliary roller in the sealing roller,
The sealing roller includes first and second heating rollers that are driven to rotate in different directions with the overlapping portion interposed therebetween,
Freely rotatably supported so as to sandwich the overlapping portion between the second heating roller at the upstream side of the first heating roller, and a auxiliary roller which is smaller in diameter than the first heating roller and the second heating roller,
The first heating roller is disposed downstream from the center of rotation of the second heating roller, and a position where the overlapping portion is held by the second heating roller of the first heating roller is downstream from a position where the overlapping portion is held by the auxiliary roller. A vertical sealing device in a bag making and filling machine arranged to be spaced apart. フィルムの重合部を挟持して搬送する送り手段の下流に配設され、
フィルムの搬送中に重合部を加熱してシールするシールローラ
を設けた縦シール装置において、
前記シールローラには、前記重合部を挟持して相互に異なる方向に回転駆動される第１、第２加熱ローラと、
第１加熱ローラの上流側において
第２加熱ローラとで前記重合部を挟持するよう自由回転可能に支持され、
第１加熱ローラ及び第２加熱ローラより小径に形成した補助ローラとを備え、
前記第１加熱ローラは第２加熱ローラの回転中心より下流に配置され、
前記第１加熱ローラの第２加熱ローラとによる重合部の挟持位置は、前記補助ローラによる重合部の挟持位置より下流に離間して配置され、
前記送り手段における重合部の挟持部から、前記シールローラにおける補助ローラへの巻付開始位置までに至る傾斜した重合部の通過ラインにおいて、前記補助ローラとの巻付開始位置と前記第１加熱ローラとの巻付終了位置とは、フィルムの搬送中心ラインからの左右への振れ量を同じ量となる位置に設定される製袋充填機における縦シール装置。 Arranged downstream of the feeding means for sandwiching and transporting the overlapping portion of the film,
Sealing roller that heats and seals the polymerization part during film transport
In the vertical seal device provided with
The sealing roller includes first and second heating rollers that are driven to rotate in different directions with the overlapping portion interposed therebetween,
On the upstream side of the first heating roller
The second heating roller is supported so as to be freely rotatable so as to sandwich the overlapping portion,
An auxiliary roller having a smaller diameter than the first heating roller and the second heating roller,
The first heating roller is disposed downstream of the rotation center of the second heating roller;
The overlapping position of the overlapping portion by the second heating roller of the first heating roller is arranged to be spaced downstream from the sandwiching position of the overlapping portion by the auxiliary roller,
The winding start position with the auxiliary roller and the first heating roller in the passing line of the overlapping overlapping section from the sandwiching section of the overlapping section in the feeding means to the winding start position of the sealing roller around the auxiliary roller winding end position and the longitudinal sealing device of the shake amount the same amount to become set Ru bag filling machine in a position to the left and right from the conveyance center line of the film. 前記シールローラ及び予熱手段を覆ってフィルムへの熱影響を防止するベッドを設け、そのベッドには前記通過ラインに沿って延びる案内間隙を設けた遮へい板を備え、前記重合部の通過ラインにおいて、補助ローラとの巻付開始位置と前記第１加熱ローラとの巻付終了位置とによるフィルムの搬送中心ラインからの左右への振れ量に応じた幅広部を形成した請求項１または２に記載の製袋充填機における縦シール装置。 A bed for covering the sealing roller and the preheating means to prevent the heat effect on the film is provided, and the bed is provided with a shielding plate provided with a guide gap extending along the passing line, and in the passing line of the overlapping portion, 3. The wide portion according to claim 1, wherein a wide portion is formed according to an amount of lateral deflection from a film conveyance center line by a winding start position with the auxiliary roller and a winding end position with the first heating roller. Vertical sealing device for bag making and filling machines. 規定時間を超えるフィルム搬送停止時には第２加熱ローラが補助ローラと第１加熱ローラとから離間されて、補助ローラと第１加熱ローラとによる重合部の挟持を解除するよう作動されることを特徴とする請求項１〜３のうちのいずれか一項に記載の製袋充填機における縦シール装置。 The second heating roller is separated from the auxiliary roller and the first heating roller at the time of stopping the film conveyance exceeding the specified time, and is operated so as to release the overlapped portion between the auxiliary roller and the first heating roller. The vertical sealing apparatus in the bag making and filling machine according to any one of claims 1 to 3 .
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