JP4328460B2 - Film feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film supply machine having a film bonding apparatus for bonding a starting end of a coil film of a reel in a standby state to a terminal end of a coil film of one reel among a pair of film reels for supplying a film. The present invention relates to a film feeder for an automatic packaging machine that continuously wraps an object to be packaged such as various powders and granular materials with a packaging film.
[0002]
[Prior art]
A conventional film feeder will be described taking a horizontal automatic packaging machine for filling powder as an example. In the horizontal automatic wrapping machine illustrated in FIG. 8, the long films F1 and F2 rewound from the film reels R1 and R2 are moved in the horizontal direction while being arranged around the turntable on the turn. It is gripped by the sealing bar 43, held while forming a width seal at regular intervals, and continuously moved. While the sealing bar 43 is holding the film F1 on the turntable, a number of chutes 46 are sequentially inserted into the film between the adjacent sealing bars 43 and filled with a predetermined amount of powder. Remove the chute, remove the sealing bar, and the film leaves the turntable. In this way, the film filled with the powder in the bag portion isolated by the width seal portion is sealed by sealing the upper edge with the heat seal roll 47, and then the film sealed at the upper edge is the width seal portion. A perforation is made in the bag, and the required number of bags are cut and separated at the width seal portion to form a large number of packages.
[0003]
In the automatic packaging machine, a film feeder is used to continuously feed the film from the coil film. The film feeder has a pair of film reels as a recoiler, and the film is fed from one film reel. The other film reel is in a standby state in which another new coil film is loaded and wound, and immediately after the film F1 of the one film reel R1 is used up, The end of the film and the start of the standby film F2 are bonded using a film bonding apparatus, and thus the film is continuously supplied as a long film without interruption of supply.
[0004]
As an example, Japanese Patent Application Laid-Open No. 2000-85721 discloses a conventional film bonding apparatus. In the apparatus, a pair of bonding rolls 1a and 1b are arranged in parallel to each other, and these bonding rolls can be pressed against each other. There is a gap through which the film can be inserted between the joining rolls together with the surface, and the film is disposed approximately parallel to the central axis of the film reel from the pair of film reels. During the film supply from the one film reel, the film passes through the gap between the joining rolls, and during this time, from the waiting film reel, the starting end of the film is temporarily fixed to the pressure contact surface of the joining roll in advance, At the time of bonding, the bonding rolls are rotated opposite to each other so that the pressure contact surfaces are brought into contact with each other, the end of the film on the supply side and the starting end of the film on the standby side are bonded, and the film is continuously inserted through the gap between the bonding rolls. I am trying to pay out.
[0005]
[Problems to be solved by the invention]
However, in the above method, when the film ends are bonded to each other, it is necessary to temporarily fix the start side of the film on the standby side to the bonding surface of the bonding roll, but the temporary fixing passes between the bonding rolls. It is necessary to apply it to the bonding roll adjacent to the film that is in close contact with the lower peripheral surface of the roll, and it is difficult to perform this work, requiring skill, and sometimes it is necessary to stop the operation. There was a problem that improvement was difficult. In order to prevent the supply-side film and the standby-side film from shifting in the width direction, it is preferable that the temporary fixing film of the standby-side film reel is aligned with the edge of the film being supplied. However, there is a width-direction fine adjustment device described in the above-mentioned Japanese Patent Application Laid-Open No. 2000-85721, but the machine manufacturing cost is high, and there are cases where it is required to carry out by a simple method.
[0006]
The present invention provides a film feeder that has a simple structure for temporarily fixing a film and is easy to handle so that a film on a standby-side film reel can be easily temporarily fixed to a joining roll in advance.
[0007]
[Means for Solving the Problems]
The film feeder of the present invention is a roll of a pair of joining rolls disposed so as to be retracted to a reel side where a film is newly drawn out. Specifically, the film feeder can be opposed to each other in parallel and can be pressed against each other. A pair of joining rolls having a pressure contact surface and a separation surface through which the film can be inserted, a pair of swiveling means for supporting the pair of joining rolls so as to be retracted from the direction of drawing the film from the reel, and a pair of joining And a rotation drive unit that connects and rotates the rolls in a detachable manner.
[0008]
As a result, at least one of the pair of joining rolls is separated from the rotational drive unit and swung to the waiting reel side by the swiveling means to widen the space between the joining rolls, and the waiting end of the film of the reel on the waiting joining roll Temporarily fasten to the pressure contact surface, close the joining roll, wait, and when joining the film, connect it to the rotation drive unit and rotate it counterclockwise so that the pressure contact surfaces are in pressure contact with each other and the end of the film from the reel and the waiting film Are joined by bonding, thermocompression bonding, adhesion, or the like, and the joined film is continuously fed out through the gap between the joining rolls.
[0009]
The film supply machine of the present invention is capable of separately turning a pair of bonding rolls so as to retract in the film drawing direction, and when temporarily fixing the film from the reel on standby to the bonding roll, With the space between the joining rolls widened, the starting end of the film can be easily temporarily fixed at a predetermined position on the pressure contact surface of the joining rolls. In addition, if the joining roll spread by the turning means is made to be rotatable, the pressure contact surface can be turned to the upper surface and the temporary fixing work can be easily performed. These operations also enable fine adjustment of the temporary fixing position of the film without stopping the operation, so that the film feeder can be easily joined to each other while having an extremely simple structure. can do.
[0010]
Since this film supply machine includes a pair of turning means that supports the pair of joining rolls so as to be separately turnable, and a rotational drive unit that rotates the pair of joining rolls so as to be separable, When the joining roll is in a parallel state, the rotation driving unit is connected to the joining roll to rotate and the joining roll is turned, and when the joining roll is swung, the rotation driving unit is separated from the joining roll to facilitate turning, In addition, the roll can be freely rotated.
[0011]
The present invention includes a pair of film reels for rewinding a long film alternately by attaching a coil film. Since the start end of the waiting film is joined to the reel, it is possible to continuously supply long films drawn alternately from the reel.
[0012]
As the joining roll used here, a roll having a pressure contact surface which can be opposed to each other in parallel and can be pressure-contacted with each other and a separation surface through which the film can be inserted is used. The film passes through the gap formed between the separation surfaces of the bonding rolls, and at the time of bonding, the pair of bonding rolls are rotated and the bonding surface is waiting at the end of the passing film and the standby film reel. The joining roll is pressed and joined to the starting end of the joining roll. After joining, the film from the film reel that was on the standby side is sequentially supplied. The film reel which was the other supply side is put on standby with a new coil film mounted, and during the standby, the starting end of the film is temporarily fixed to the joining surface of the opposite joining roll until the time of joining. Wait.
[0013]
Preferably, the pair of swiveling means preferably includes a pair of bearings that rotatably hold the joining roll, a frame that supports the bearings, a swivel bearing that is connected to the frame, and a shaft that can pivot the swivel bearing. And a support base on which a fixed shaft to be supported is fixed. Usually, it is preferable to horizontally rotate the frame with the fixed axis as the vertical axis, and the joining rolls supported by the frame can be horizontally rotated from the parallel state to the retracted position. In the retracted position, the operation of temporarily fixing the start end of the standby side film to the pressure contact surface of the bonding roll is facilitated.
[0014]
In particular, each of the pair of bonding rolls is provided with a pressure contact surface and a separation surface alternately in the circumferential direction, and the pressure contact surface is a cylindrical surface that allows the pressure contact surfaces to join films by rotation of the bonding roll, Forms a gap through which the film is inserted.
[0015]
Further, in the film supply machine of the present invention, each of the pair of joining rolls has a temporary fixing means, and the temporary fixing means preferably has one or more suction ports opened on the surface of the bonding roll, and the suction It is possible to use a communication hole that communicates with the inside of the joining roll and is connected to an external decompression means, and the suction port is placed in a decompressed state so that the starting end surface of the film can be adsorbed and temporarily fixed. .
[0016]
In addition, the above rotation drive unit has a driving shaft connected to the motor for each film bonding roll, has a driven shaft at one end of each bonding roll, and the driving shaft and the driven shaft can be separated by a clutch. What is connected to can be used.
[0017]
The film supply machine of the present invention is to guide the long film continuously supplied from the above film supply machine to the forming chute, fold it in the film width direction, apply a width seal, and fill a predetermined amount of powder. It can be used in an automatic powder packaging machine for continuously packaging a large number of sachets.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments according to the film feeder of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing an example of the structure of a film bonding apparatus used in the film supply machine of the present invention. The film bonding apparatus 10 has an oval cross section having pressure-contact surfaces that can rotate opposite to each other and can be pressed against each other. A pair of joining rolls 1a, 1b, a pair of swiveling means 2a, 2b for pivotally supporting the joining rolls 1a, 1b so as to be retracted from the direction of pulling out the film from the film reel on the supply side, and each joining roll. And a pair of rotation driving portions 35a and 35b that detachably hold and rotate.
[0019]
In the joining roll, the press contact surfaces and the separation surfaces are alternately provided in the circumferential direction. The joining roll 1a has the contact surfaces 11, 13 and the separation surface 12, and the joining roll 1b has the contact surfaces 11, 13. There are spaced surfaces 12, 12. Here, the pressure contact surface is formed as a cylindrical surface, and the separation surface is a flat surface in this example. When the pressure contact surfaces face each other, they are pressed in contact with each other and further rotated, and the separation surfaces face each other. A gap through which the film can pass is formed between the separation surfaces.
[0020]
Further, the pressure contact surfaces 11 and 11 of the joining rolls 1a and 1b have one pressure contact surfaces 13 and 13 made of a buffer layer made of a flexible material such as rubber, and the other pressure contact surfaces 11 and 11 are hard surfaces, for example, The point which is a metal surface is different.
[0021]
The joining roll 1a and the joining roll 1b rotate opposite to each other so that the press contact surface 11 and the press contact surface 13 made of the buffer layer come into pressure contact, and the press contact surface 13 made of the buffer layer reduces friction during press contact and uniform press contact of the film. Is possible. Further, suction holes 14 and 14 as temporary fixing means for the film are provided in the pressure contact surfaces 11 and 11 of the joining rolls 1a and 1b, respectively. As shown in FIG. 2, the several suction hole 14 opened to the outer surface of a joining roll is connected to the communicating hole 15 extended in a longitudinal direction inside the joining roll 1a, 1b. As will be described later, the inside end of the communication hole 15 is decompressed to temporarily fix the starting end of the film by suction.
[0022]
The pair of swiveling means includes a pair of roll bearings 24 and 24 that rotatably hold both ends of each joining roll 1a (1b), a frame 23 that supports the roll bearings 24 and 24, and a frame 23. The slewing bearing 21 is connected to the slewing bearing 21 and a support base 26 is secured to the fixed shaft 22 that supports the slewing bearing 21. In this example, the frame 23 is fixed to one end of the frame 23 via the arm 27 to the swing bearing 21.
[0023]
With this swiveling means, the pair of joining rolls 1a and 1b can maintain a parallel state with each other in a steady supply state, and each joining roll 1a (1b) is uniquely arranged around the vertical fixed shaft 22. (In the example of FIG. 1, the joining roll 1b is opened to the standby side film F2 side), so that the swiveling joining roll is retracted to a position away from the other joining roll. can do. Further, the turning means may be provided with an appropriate stopper member 25 erected on both ends of the support base 26 in order to stop the joining roll with a predetermined opening.
[0024]
In this film bonding apparatus, a pair of rotation driving units are arranged in parallel on the machine base adjacent to the pair of turning means so that the pair of bonding rolls can rotate. As shown in FIGS. 1 and 2, the rotation driving units 35 a and 35 b include, for example, a driving unit 33 including a motor with a clutch brake, a bevel gear train 34 supported on the machine base unit M via a support member 36, and One end is composed of a driving shaft 37 rotatably held by the gear train 34, and the rotation of the driving means 33 is transmitted to the driving shaft 37 via the gear train 34, so that the driving shaft 37 is rotationally driven.
[0025]
Further, referring to FIG. 1 and FIG. 2, with respect to the connecting mechanism of the joining roll and the rotation drive unit, one end of the joining roll 1 a is rotatably supported by the roll bearing 24 and a driven shaft 16 protruding in the axial direction is provided. Yes. The joining roll 1a and the rotation drive part 35a are connected so as to be separable by a clutch 3a. That is, the driving side clutch 31 is fitted to the other end of the driving shaft 37, and the driven side clutch 32 is fitted to the driven shaft 16. The driving-side clutch 31 and the driven-side clutch 32 constitute a meshing clutch. When the driven shafts of the joining rolls 1a and 1b are in a linear direction with the driving shaft, the clutch is engaged, and the driving shaft 37 and the driven shaft 16 are engaged. When the drive means 33 is rotated, the rotation is transmitted to the driven shaft 16 and the joining roll 1a (1b) is rotated.
[0026]
On the other hand, in the direction in which the joining rolls 1a and 1b turn and the driven shaft bends with respect to the driving shaft, the engagement of the clutches 31 and 32 is released, and the connection between the driving shaft 37 and the driven shaft 16 is released. The joint rolls 1a and 1b themselves can be freely rotated together with the turning movement of the joint roll 1a.
Further, when the joining rolls 1a and 1b are returned to the original parallel positions, the clutches 3a and 3b are engaged with each other, and the joining rolls 1a and 1b rotate as the driving shaft 37 rotates.
[0027]
FIG. 5 shows a decompression pipe connected to the communication hole 15 of the temporary fixing means, and the communication hole 15 is connected to a pipe line 151 leading to the outer peripheral surface near the end of the joining roll. It opens at a position close to the bearing 24. The decompression connection coupler 8 having a through hole through which the joining rolls 1a and 1b pass is arranged so that the peripheral hole 80 on the connection inner surface is connected to the pipe 151, and O-rings are arranged on both sides of the peripheral hole 80. The joining rolls 1a and 1b are sealed, and the connection coupler 8 further has a communication hole 81 communicating with the peripheral hole 80. Thereby, the communication hole 81 is airtightly communicated with the communication hole 15 via the peripheral hole 80 and the pipe 151 of the bonding rolls 1a and 1b even when the bonding rolls 1a and 1b are rotating. Yes. A flexible vacuum tube 83 is connected to the opening of the communication hole 81 via a connector 85, and the vacuum tube 83 is connected to a vacuum pump (not shown) as decompression means. In the example of FIG. 5, the vacuum pipe including the vacuum tube 83 is provided on the turning shaft 22 side of the turning means 2a, 2b, that is, on the clutches 3a, 3b side. Flexibility makes it easy to follow a turn.
[0028]
This temporary fixing means can reduce the pressure of the suction hole 14 through the vacuum tube 83, the connection coupler 8, and the communication hole 15 by operating the pressure reducing means of the vacuum pump. Therefore, when the vacuum pump is set in a suction state in advance and the starting end of the film F2 is pressed against the pressure contact surface 11 of the bonding roll 1b, the suction hole 14 is adsorbed to the pressure contact surface 11 so that the temporary contact can be easily made. Can be stopped. Further, if the length of the bonding roll that can be temporarily fixed is increased, fine adjustment of the temporary fixing position of the film F2 can be easily performed.
[0029]
During the continuous supply operation of the film, the temporary fixing of the film and the joining of the film are performed according to the following procedure. At the time of steady operation, as shown in the cross-sectional view of FIG. 3, the joining rolls 1a and 1b are arranged so that the entire surface of the separation surface 12 faces each other, and the film F1 from the supply-side film reel R1 is placed between the joining rolls. It is continuously pulled out in the upward pulling direction through the gap. The starting end of the film F2 from the other standby-side film reel R2 is temporarily fixed to the press-contact surface 11 of the standby-side joining roll 1b, and a double-sided adhesive tape piece is stuck to the outer surface of the film.
[0030]
When temporarily fixing the film, without stopping the operation, as shown in FIG. 1, one of the joining rolls 1b is separated from the rotation drive unit 35b, and is turned to the waiting film reel side by the turning means 2b. The space between the joining rolls 1a and 1b is widened. Here, the joining roll 1b is rotated so that the press contact surface 11 faces the drawing direction of the film.
[0031]
Next, the film F2 is pulled out from a standby-side film reel (not shown), and its starting end is pressed against a predetermined position in the width direction of the pressure contact surface 11 of the joining roll 1b. Since a plurality of, in this example, four suction holes 14 are provided on the pressure contact surface 11, the pressed start end is sucked by the suction holes 14 and applied to the pressure contact surface 11 of the joining roll 1 b. Are temporarily fixed in a state in which a double-sided adhesive tape piece is stuck on the outer surface of.
[0032]
After the temporary fixing of the film F2, the joining roll 1b is rotated 1/2 turn in the direction of returning the film so that the pressure contact surface 11 on which the film F2 is temporarily fixed faces in the direction opposite to the drawing direction of the film. Next, the joining roll 1b is closed, and the driving side clutch 31 and the driven side clutch 32 are engaged with each other, thereby connecting the driving shaft 37 of the rotation driving unit 35b and the driven shaft 16 of the joining roll 1b.
[0033]
In the above example, the method of temporarily fixing the film in a state in which the pressure contact surface 11 having the suction holes 14 faces the drawing direction of the film has been described. However, the pressure contact surface 11 having the suction holes 14 corresponds to the drawing direction of the film. Of course, the film may be temporarily fixed while facing the opposite direction, but in this case, it is not necessary to rotate the joining rolls 1a and 1b after temporarily fixing the film.
[0034]
Next, using FIG. 3 and FIG. 4, the operation of the joining roll when the films are joined will be described. 3A shows a steady state during film supply, while FIGS. 4A to 4D are cross-sectional views showing a process of joining the ends of the film with a joining roll. 4 (A) to FIG. 4 (C) show the operating state, FIG. 4 (D) shows the state immediately after the end of the joining of the film, and FIG. The state which temporarily stopped the beginning of the film is shown.
[0035]
In the operating state shown in FIG. 3A, when the detector (not shown) detects that the film F1 on the supply reel R1 has run out, the joining roll 1a of the supply-side film reel R1 and the standby-side film reel R2 As shown in FIG. 4 (A), the joining roll 1b is moved from the starting position shown in FIG. 3 (A) to the direction in which the press contact surface 13 and the press contact surface 11 on which the film F2 is temporarily fixed are in contact with each other. , Rotate synchronously. Here, one surface of the double-sided adhesive tape 6 for film bonding is bonded to the outer surface of the starting end portion of the temporarily fixed film F2.
[0036]
When the pressure contact surface 13 and the pressure contact surface 11 are in pressure contact with each other, the other surface of the double-sided adhesive tape piece 6 is crimped to the end of the film F1 of the film reel R1 on the supply side. Is done. As a result, as shown in FIG. 4B, the end of the film F1 and the start of the film F2 are bonded via the double-sided adhesive tape 6.
[0037]
Next, when the press contact is completed, the vacuum pump (not shown) is stopped to release the reduced pressure state of the suction hole 14 of the standby side joining roll 1b, and the film F2 is attached to the press contact surface 11 as shown in FIG. Release from.
[0038]
Next, as shown in FIG. 4 (D), the joining roll is finally rotated approximately 1/2 from the starting position, and the rotation of the joining rolls 1a and 1b is stopped. Through the gap formed between the separation surfaces 12, the film F2 is supplied upward from the standby-side film reel R2.
[0039]
FIG. 3B shows that the coil film F1 is newly attached to the supply-side film reel R1 that has used up the coil film in the above-described process, and the starting end of the new film is temporarily fixed to the joining roll 1a by the above-described method. Then, a standby state is set.
[0040]
In the above example, a double-sided adhesive tape was used for joining the film ends, but after applying an adhesive to the outer surface of one film temporarily fixed to the pressure contact surface, the end of the other film was applied. The end portions of the film can also be joined together by press-contacting the portions. Moreover, when a heat-fusible film is used for the film, at least one of the joining rolls can be a heater roll capable of generating heat, and the film can be heated at the time of pressure welding of the film, and the films can be joined together by heat-sealing. .
[0041]
As another embodiment of the temporary fixing means, as shown in FIG. 7 (C), one or more through holes 50 are drilled in the starting ends of the films F1 and F2, and the through holes 50 are formed in the starting ends. In addition, it is possible to employ a method in which a double-sided adhesive tape is attached to the pressure-contact surfaces 11 and 11 of the joining rolls 1a and 1b with an adhesive tape exposed from the through holes 50.
[0042]
It is preferable that the film bonding apparatus of the film feeder of the present invention is provided with a puncher for this purpose. The puncher is a punch operating plate that is attached to the film bonding apparatus and can be pushed and pulled, a cam slot that is provided obliquely across the punch operating plate, and a punch that moves up and down via a cam follower that engages with the cam slot and moves up and down. It comprises a pin and a die plate having a punch hole for receiving the tip of the punch pin. In this puncher, the leading end of the film is disposed along the die plate, and the punch pin is punched at the end of the film by pushing and pulling the punch operating plate to insert the leading end of the punch pin into the punch hole.
[0043]
Specifically, in the puncher 5 shown in FIGS. 6 and 7, the punch operation plate 51 is supported on the outer surfaces of the frames 23 and 23 of the film bonding apparatus by the four upper, lower, left, and right rollers in the longitudinal direction. It is attached so that it can be pushed and pulled in the left-right direction. In the plane of the punch operation plate 51, an elliptical cam slot 52 that is inclined up and down with respect to the pushing and pulling direction, in this example, two cam slots 52 and 52 are formed to penetrate. A sliding member 53 that slides along the cam slot 52 and can move up and down is disposed, and two punch pins 54 facing the up and down direction are connected to the sliding member 53 via a fixing member 531. The punch pin 54 moves up and down by pushing and pulling the punch operation plate 51.
[0044]
Above the punch operation plate 51, a horizontal die plate 55 provided with a punch hole 550 capable of receiving the tip 540 of the punch pin 54, an upper support plate 56 forming a gap 59 immediately below, and a punch operation plate On the lower side of 51, a lower support plate 57 projects substantially horizontally from the frame 23 (23) in this example, and the upper support plate 56 and the lower support plate 57 have upper and lower holes 560, 570. Is provided to support the punch pin 54 in a penetrating manner. In the puncher 5, the sliding member 53 moves up and down in response to the left and right movement of the cam slot formed obliquely by pushing and pulling the punch operation plate 51, and the punch pin 54 moves up and down in conjunction with this movement. The tip 540 enters and exits the punch hole 550 of the die plate 55.
[0045]
Therefore, in use, if the starting end of the film is put into the gap 59 and the punch operation plate 51 is pushed and pulled, the tip 540 of the punch pin 54 punches the starting end of the film to form the through hole 50. FIG. 7A shows that the film can be inserted into the gap 59 in a state where the punch operation plate 51 is pulled and the punch pin is lowered from the punch hole 550, and FIG. After the insertion, the punch operation plate 51 is pushed to punch the film when the punch pin 54 is raised and inserted into the punch hole 550.
[0046]
The double-sided adhesive tape 6 is adhered to the starting end portion provided with the through-hole 50 formed in the film from the reel in this way, and the adhesive tape 6 exposed from the through-hole 50 is applied to the pressure contact surface 11 of the joining roll. Affixed.
At the time of bonding, the other surface of the double-sided adhesive tape 6 adhered to the film starting end is bonded to the terminal end of the supply film by pressing the pressing surfaces 11, 13 of the pair of bonding rolls 1a, 1b, The double-sided adhesive tape is easily peeled off from the pressure contact surface 11, and the film thus joined and integrated is continuously supplied.
[0047]
The film supply machine of this invention can be used for the automatic packaging machine for powder agent filling, for example. FIG. 8 is a front view showing an example of the structure of the horizontal automatic packaging machine 1 for powder filling. The film F1 rewound from the film reel R1 on the supply side of the film feeder is pulled upward through the guide roll G1 between the pair of joining rolls 1a and 1b, and the guide roll mounted on the machine base M. Guidance is provided by G3 to G7, and moderate tension is given by a tension roll G8 on the way. Next, the film F1 is guided to a horizontally formed V-shaped cross section forming chute 44, folded in half in the film width direction, and opened and closed by a cam groove 42 arranged around the turntable 41. The bar 43 forms a width seal portion with a constant interval. Next, a large number of chutes 46 swirling between the adjacent sealing bars 43 are sequentially inserted between the films, and a predetermined amount of powder is filled from the quantitative supply device 45. After filling, the chute 46 is pulled out and the sealing bar 43 is removed. Next, the film 60 composed of the bag portion separated by the width seal portion is separated from the turntable 41, and the upper edge of the film 60 is heat-sealed by a heat roll 47, and the perforation is formed in the width seal portion of the edge-sealed film. Insert and cut the required number of bags at the width seal.
[0048]
In the above example, the horizontal automatic packaging machine for filling powder is described, but it goes without saying that the film supply machine of the present invention can be applied to a vertical automatic packaging machine in which the film moves from top to bottom. Furthermore, the film feeder of the present invention can also be applied when filling an object to be packaged other than the powder.
[0049]
【The invention's effect】
The film feeder of the present invention includes a pair of bonding rolls having a pressure bonding surface that can rotate in parallel and can be pressed against each other in parallel, and a separation surface through which the film can be inserted, and the pair of bonding members. A pair of swiveling means that rotatably supports the roll so as to retract from the direction of drawing the film from the reel, and the pair of swiveling means are disposed adjacent to each other, and the pair of joining rolls are detachably connected to rotate. Since it comprised from a pair of rotation drive part to be made, the film can be temporarily fixed to a predetermined position in the state which expanded the joining roll. Thereby, it is possible to provide a film feeder that has a simple structure and can accurately temporarily fix the film at a predetermined position without stopping the operation.
[0050]
In addition, each of the pair of swiveling means includes a bearing that rotatably holds the joining roll, a frame that supports the bearing, a swivel bearing that is rotatably held by the fixed shaft and connected to the frame, and the fixed shaft is firmly fixed. Therefore, the position and interval of the pair of joining rolls can be easily controlled by turning the turning means.
[0051]
In addition, each of the pair of bonding rolls is provided with a pressure contact surface and a separation surface alternately in the circumferential direction by 1/4 rotation, and the pressure contact surface is a cylinder that allows the pressure contact surfaces to bond films together by rotation of the bonding roll. Since the gap is formed between the separated surfaces so that the films can be inserted therethrough, the film can be inserted and bonded with a simple structure.
[0052]
Further, each of the pair of joining rolls includes temporary fixing means including one or more suction ports provided on the surface, and communication holes that connect the suction ports inside the joining rolls and are connected to an external decompression unit. The suction port is in a reduced pressure state so that the starting end surface of the film is adsorbed, so that the film can be temporarily fixed temporarily. Furthermore, since the adsorption and desorption is easy, fine adjustment of the temporary fixing position of the film is easy.
[0053]
Further, the rotational drive unit has a pair of driving shafts, each of the pair of joining rolls has a driven shaft at one end, and the driving shaft and the driven shaft are connected to each other by a clutch so as to be separable. Therefore, the joining roll can be separated from the rotational drive unit more accurately and in a short time, and the film can be temporarily fixed in a shorter time.
[0054]
Further, in a powder automatic packaging machine that continuously wraps a large number of sachets, a pair of joining rolls having a pressure contact surface that can be opposed to each other in parallel and can be pressed against each other, and a separation surface through which a film can be inserted; The pair of joining rolls are disposed adjacent to the pair of turning means, and the pair of turning means for pivotally supporting the pair of joining rolls so as to be retracted from the direction of drawing the film from the reel, and separating the pair of joining rolls. If a film bonding apparatus having a rotation drive unit that can be connected and rotated is used, the automatic powder packaging that can fix the film accurately at a predetermined position without stopping the operation and improve the operating rate. Can provide a machine.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing the structure of a film bonding apparatus used in a film feeder according to an embodiment of the present invention.
FIG. 2 is a schematic partial cross-sectional view showing the structure of a film bonding apparatus used in the film feeder according to the embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view (A, B) showing a steady state of the film feeder according to the embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view (AD) showing the operation of the film bonding process in the film feeder according to the embodiment of the present invention.
FIG. 5 is a view showing a decompression pipe of the temporary fixing means of the film supply machine according to the embodiment of the present invention.
FIG. 6 is a perspective view seen from below showing a puncher mechanism provided in the film feeder according to the embodiment of the present invention.
FIG. 7 is a partial cross-sectional view showing the operation of the puncher mechanism provided in the film feeder according to the embodiment of the present invention (AC).
FIG. 8 is a front view showing the structure of an automatic packaging apparatus using the film feeder according to the embodiment of the present invention.
[Explanation of symbols]
10 Film feeder
1a, 1b Joining roll
2a, 2b turning means
3a, 3b clutch
35a, 35b Rotation drive part
23 frames
24 Roll bearing
31 Driving clutch
32 Driven side clutch
6 Double-sided adhesive tape
F1, F2 film

Claims (8)

A pair of film reels for rewinding the long film alternately with the coil film mounted thereon, and a film bonding apparatus for bonding the end of the film from the film reel that is supplying the film and the starting end of the standby film are provided. And a film supply machine for continuously supplying long films drawn alternately from the pair of film reels,
The film bonding apparatus
A pair of joining rolls having a press contact surface arranged in parallel and opposed to each other and capable of press contact with each other on a peripheral surface, and a separation surface for forming a gap through which the film being supplied is inserted;
A pair of swiveling means for supporting the pair of joining rolls and enabling swiveling so as to retreat from the film being supplied from the film reel;
A rotation drive unit disposed adjacent to the pair of swiveling means and configured to connect and rotate the pair of joining rolls in a detachable manner;
At least one of the pair of bonding rolls is swung to the waiting reel side by swiveling means to widen the space between the bonding rolls, and the starting end of the coil film attached to the waiting reel is temporarily fixed to the pressure contact surface of the bonding roll, The bonding roll is closed and connected to the rotation drive unit to stand by, and at the time of film bonding, the pair of bonding rolls are rotated opposite to each other by the rotation drive unit, and the end of the film from the reel is waiting by the pressure contact surfaces A film feeding machine characterized in that a film joined by press-contacting the starting end of the film is continuously fed out through a gap between the pair of joining rolls. A frame in which the pair of swivel means rotatably supports both ends of the joining roll via a bearing, a swivel bearing rotatably supported by a fixed shaft and connected to the frame, and a support to which the fixed shaft is fixed The film feeder according to claim 1, further comprising a table. Each of the pair of bonding rolls is provided with a pressure contact surface and a separation surface alternately in the circumferential direction, and the pressure contact surface is a cylindrical surface that allows the pressure contact surfaces to join films by rotation of the bonding roll, and the separation surface. However, the film feeding machine according to claim 1, wherein a gap is formed to allow the film to be inserted when the separated surfaces face each other. The rotational drive unit has a pair of driving shafts, each of the pair of joining rolls has a driven shaft at one end, the driving shaft and the driven shaft are connected by a clutch, and are separated when the joining roll is turned. The film feeder according to any one of claims 1 to 3, wherein the film feeder is made possible. Each of the pair of bonding rolls includes one or more suction ports provided on the surface of the bonding roll, and a communication hole that communicates the suction ports inside the bonding roll and is connected to an external decompression unit. The film feeder according to any one of claims 1 to 3, further comprising: a temporary fixing means, wherein the suction port is in a decompressed state to adsorb the starting end surface of the film to temporarily fix the film. A double-sided adhesive tape piece is affixed to the starting end of the coil coil in standby temporarily fixed to the standby bonding roll, and at the time of bonding, the end of the film being supplied is terminated by the pressure contact surface of a pair of bonding rolls The film feeder according to claim 1, wherein the film is bonded to the double-sided adhesive tape piece. A puncher for perforating a through-hole is attached to the film end along the frame of the turning means, a double-sided adhesive tape is attached to the film end, and the double-sided adhesive tape piece is attached to the film end. The film feeder according to claim 2, wherein the film feeder is temporarily fixed by adhering to the pressure contact surface of the joining roll through the through hole. A film feeder according to any one of claims 1 to 7, wherein a long film continuously moved from the film feeder is guided to a forming chute and folded in two in the film width direction, and a width seal is applied to give a predetermined amount. Automatic powder packaging machine that fills powders and continuously wraps many sachets.

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