JPH08257989A - Multiple-web winding device - Google Patents

Abstract

PURPOSE: To prevent interference between cut narrow webs, in a multiple-web winding device which is designed so that a wide raw web is cut into a plurality of narrow webs by a slitter unit during rewinding process and the narrow webs are continuously wound onto a plurality of cores arranged coaxial with one another on a winding shaft. CONSTITUTION: A slitter unit is provided with hollowing slitter blades 3a, 3b by which a wide raw web 1 is cut into a plurality of narrow webs 4 in such a way that predetermined gaps 6 are formed between the cut narrow webs 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for a flexible long strip (hereinafter referred to as "web") such as a film, a paper, a metal foil and the like, and more specifically, it has a wide width. The present invention relates to an improvement of a winding device that cuts a raw web into a plurality of narrow webs by a slitter in a rewinding process and continuously winds the web (hereinafter referred to as "multi-strand winding").

[0002]

2. Description of the Related Art Multi-strand winding work is found in various fields. Especially, when handling a wide variety of products, depending on the type of product, the width dimension of the web to be wound around the core (hereinafter referred to as "take width").
There will be many need to change.

Conventionally, as such a web multi-winding device requiring a change in take-up width, a plurality of cores (usually hollow paper cores are used) equal to the number of narrow webs to be cut are provided. The winding webs were attached in a zigzag manner, and the narrow webs cut on these winding cores were taken up at the same time, and when this was completed, the chucking member that held one end of each winding shaft rotatably in the axial direction. The other end of the take-up shaft so that it can be easily separated from the rotary drive system, and then each take-up shaft holding a plurality of narrow web rolls is removed from the machine frame by using human power or mechanical force. It was known to remove and replace with a new winding shaft with an empty core.

However, according to such a web multi-winding device, incidental work accompanying web roll switching such as removal of the web roll, replacement of the winding shaft, and re-installation of the empty core becomes very troublesome. Not only that, but during that time, the winding work of the web has to be interrupted, and when changing the take-up width, it takes a long time because of manual work.

In order to solve these drawbacks, for example, in the web winding device disclosed in Japanese Patent Publication No. 60-55416 by the present applicant, the first web winding / rolled product discharging station, core feeding / feeding station Web winding station and second
It is possible to wind the narrow web by holding the core for each cut narrow web and rotating this core while installing the web winding and roll discharge station in this order on the fixed rack. A winding body formed by connecting and integrating two sets of winding means in the longitudinal direction of the web is provided so as to reciprocate with respect to each station of the fixed frame. Further, in this web winding device, the winding body is composed of a plurality of winding arms which are movable in the web width direction with reference to one end in the width direction of the web.

According to the web winding device having such a structure, the next core can be prepared and the wound product can be discharged during the winding work of the narrow web, so that the continuous work becomes possible. Also, when changing the take-up width, preparation can be completed by automatically moving the take-up arm of the take-up body, so that the take-up width can be changed in a short time with a simple operation. The effect is that you can do it.

However, in this web winding device,
Since the cutting position of the narrow web that has been wound up is far from the position of the winding shaft on which the empty winding core is mounted, when the cutting end of the narrow width web is wound around the empty winding core, the cutting end is emptied. A means for guiding to the winding core is required, and in that case, in order to prevent the cutting surfaces of the narrow web cut into a plurality from interfering with each other, a plurality of empty winding cores are coaxially arranged in one row. It becomes difficult to arrange them, and two or more winding shafts are required. For this reason, many parts are required, and the device itself becomes complicated,
Further, there is a problem in that the work becomes complicated because it is necessary to separately attach empty winding cores to two or more winding shafts.

Further, when the take-up width is changed in this web winding device, the width before the change of the take-up width, which is between the slitter for cutting the wide original web into a predetermined width and the cutting position, is changed. In addition, there is a problem that the cut narrow web becomes a product loss and the device itself becomes complicated because the device itself needs a means for changing the take-up width.

In order to solve these problems, the applicant of the present invention has proposed a multi-web winding method and apparatus disclosed in Japanese Patent Laid-Open No. 4-133946. In this method and apparatus, a plurality of winding cores are coaxially arranged in one row at the winding position, the empty winding core row is moved to the winding position, and at the same time the winding core row that has been completely wound is The narrow web having one end wound on the winding core is moved to a position at least contacting the empty core moved to the winding position, and then the narrow web is cut at a portion in contact with the empty core. I try to wind it around the empty core.

According to this web multi-winding device, the narrow web is cut on the empty core moved to the winding position, and the cut end of the narrow web is wound around the empty core, so that a plurality of webs are wound. It is possible to arrange a plurality of winding cores in one line on the same axis while preventing interference between the cut surfaces of the narrow web cut into individual pieces, and thus, in the related art, a plurality of winding cores are arranged in two axes. There is an effect that it is possible to simplify the work of mounting the winding core on the winding shaft, which is complicated due to the above division. Further, the winding shaft itself does not have to be divided, and the means for guiding the cut end of the narrow web to the empty winding core can be eliminated, so that the device itself can be simplified.

Further, when the take-up width is changed, not only can product loss be prevented, but a plurality of empty cores formed to correspond to the width after the change of take-up width can be mounted on the same take-up shaft. Since the arrangement can be made by arranging the columns in one line, the number of means for changing the width can be reduced, and in this respect also, there are various advantages such as simplification of the apparatus itself.

[0012]

However, when the coaxial winding is performed, the interference between the cut surfaces of the narrow web may be unavoidable. Further, for example, when the original web is a film coated with a photosensitive material, in addition to the variation in the thickness in the width direction that is present in the plastic film as the base, the coating film of the photosensitive material also has variation in the width direction. Has a thick portion and a thin portion in the width direction of the original web, and when a plurality of winding cores are arranged in a line on the same winding shaft to perform coaxial winding, The narrow web cut from the thick part of the web is tightly wound around the core,
There was also a problem that the narrow web cut from the thin portion of the original web was loosely wound around the core.

In view of the above-mentioned circumstances, the present invention avoids the possibility that the cut surfaces of the narrow web interfere with each other when the plurality of winding cores are arranged in a line on the same winding shaft to perform the coaxial winding. In addition, it is an object of the present invention to provide a web multi-winding device capable of winding a plurality of narrow webs around a winding core with uniform hardness even if there is a variation in thickness of the original web. It is what

[0014]

According to the present invention, as described in claim 1, a wide original web is cut into a plurality of narrow webs by a slitter unit in the process of rewinding, and the narrow webs are cut. In a multi-web web winding device configured to continuously wind around a plurality of winding cores coaxially arranged on a winding shaft, the slitter unit has a predetermined gap between the narrow webs after cutting. It is characterized by comprising a punching slitter blade capable of cutting the wide original web into a plurality of narrow webs in a manner such that the gap is formed.

Further, according to the present invention, as described in claim 2, the wide original web is cut into a plurality of narrow webs by a slitter unit in the process of rewinding, and the narrow webs are mounted on the winding shaft. In a web multi-strand winding device configured to continuously wind around a plurality of winding cores coaxially arranged with each other, the winding shaft includes winding core chucking claws that are freely retractable from the outer peripheral surface. It is characterized in that it comprises an air friction shaft having a large number of friction units coaxially arranged side by side and provided with a friction torque proportional to the air pressure, and the winding shaft is provided so as to be movable in the axial direction. is there.

Further, as described in claim 3, the present invention can have both the structure described in claim 1 and the structure described in claim 2.

[0017]

According to the present invention, since a plurality of winding cores are arranged in a line on the same winding shaft, the work of mounting the winding cores on the winding shaft is simplified and the size switching time is reduced. In addition to the effect of shortening, the slitter unit is provided with the hollow slitter blade, so that a predetermined gap is formed between the narrow webs after cutting, so that the cut sections of the narrow webs interfere with each other. It is possible to surely avoid the fear.

Further, according to the present invention, since a plurality of friction units capable of obtaining a friction torque proportional to the air pressure are coaxially arranged side by side and provided with a winding shaft made of an air friction shaft, a plurality of narrow webs are provided. It is possible to wind around the core with uniform hardness.

Further, in the present invention, since the winding shaft made of the air friction shaft is provided so as to be movable in the axial direction, the winding width can be increased by moving the winding shaft in accordance with the position of the narrow web. When changing, it is possible to prevent the two cores from being overlapped and held by the core chucking claws of one friction unit.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a web multi-winding device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic view showing the overall construction of an embodiment of a web multi-winding device according to the present invention, and FIG. 2 is a device shown in FIG. 1 in which a wide web is cut into three narrow webs. And a relative position relationship between the winding core chucking claw of the winding shaft and the winding core, FIG. 3 is a front view showing the configuration of the winding device body, and FIGS. [Fig. 4] is an explanatory view showing the configuration and operation of the web winding unit.

In FIG. 1, a wide web 1 unrolled from a roll (not shown) is punched in a punching unit 2 and then a slitter unit 3 having a plurality of slitter blades forms a three-strand narrow web 4. Be cut. As shown in FIG. 2, the slitter unit 3 includes two hollow slitter blades 3a and 3b and one normal slitter blade 3c. The punching unit 2 has slitter blades 3a, 3a in the slitter unit 3 for changing the width and the number of the narrow webs 4.
When changing the positions of b and 3c, in order to accurately and surely engage the upper and lower slitter blades 3a, 3b and 3c at the new position, a hole is formed in the web 1 at the position where the blades are inserted. The position of the slitter blades 3a to 3c is automatically and accurately changed.

The hollowing slitter blades 3a and 3b form two thread ears 5 having a narrow width (about 1 mm to 10 mm) between the narrow webs 4 when the three narrow webs 4 are cut. It is a slitter blade having a function of cutting the wide web 1 by using the hollow slitter blades 3a and 3b, and has a width of about 1 mm to 10 mm between the three cut narrow webs 4. A gap 6 is formed. The thread selvage 5 is sucked and processed by the thread selvage suction unit 7, but the thread selvage suction unit 7 causes the thread selvage 5 to flap,
A roller (not shown) is provided at the entrance so as not to rotate, and the above-mentioned rollers are operated during the distribution of the thread selvage 5 and during the normal winding operation so that the size can be automatically switched. It can be switched.

On the other hand, the ears 8 cut from the edge of the wide web 1 by the slitter blade 3c are distributed to the ear chopper 9 side by a distribution guide plate (not shown),
The tension is controlled by a sandwich conveyor (not shown) or the like, and the tension chopper 9 is conveyed to the ear chopper 9 for processing.

The cut three narrow webs 4 are conveyed by the suction roller 10 and the nip roller 11 to the web winding position A in the main body 12 of the turret type winding device, where they are placed on the winding shaft 13A or 13B. It is wound up on the winding core 14 made of the attached paper tube. A winding unit 20 described later is arranged near the web winding position A, and the suction roller 10 and the nip roller 1 are also provided.
A self-propelled cutter unit 30 and a pair of rollers 31 and 31 are arranged between 1 and the winding unit 20.

As shown in FIG. 3, the winding device body 12 has a
A pair of frames 1 fixed on the floor with a predetermined space
A turret shaft 17 that is rotatably supported by 5, 5;
A winding shaft moving arm 1 that is spline-coupled to the turret shaft 17 and is movable in the axial direction of the turret shaft 17.
8, a turret arm 19 provided integrally with the arm 18, and an angle of 180 ° with respect to the turret shaft 17 at an equal distance from the turret shaft 17.
Two rotatable take-up shafts 1 provided in parallel with the turret shaft 17 on the turret arm 19 with an angular interval of
3A, 13B.

The turret shaft 17 is rotationally driven by the turret rotation motor 21 through the gears 22 and 180 by 180 °, so that one of the winding shafts 13A and 13B is located at the upper web winding position A. At some time, the other winding shaft is set at the lower product (rolled product) discharge / core supply position B. Note that FIG.
The winding shaft 13A is at the web winding position A, and the winding shaft 1
3B shows the state in which the product discharge / core supply position B is set. The winding shaft moving arm 18 is screwed into two ball screws 24, 24 rotatably supported on one frame 15, and these ball screws 24, 24 are used for the winding shaft moving motor. By being rotationally driven by the toothed belt 26 by the toothed belt 25, the winding shaft moving arm 18 moves in the axial direction of the turret shaft 17, and accordingly, the winding shaft 13 is moved.
A and 13B are configured to move in the axial direction (left and right direction in FIG. 3). The turret arm 19 is provided with take-up motors 27A and 27B for rotating the take-up shafts 13A and 13B respectively in arbitrary directions. These take-up motors 27A and 27B are provided at one end of the turret shaft 17. Power is supplied through the slip ring 28 provided.

Although not described in detail, the other frame 16 is provided with a winding shaft centering unit 29 for preventing the winding shaft from swinging during winding of the narrow web 4. . This unit 29 includes a winding shaft 13A or 13B (13A in FIG. 3) located at the upper web winding position A.
The winding shaft 13A or 13B is provided coaxially with the winding shaft 13A or 13B so as to be movable back and forth. While the winding shaft 13A or 13B is winding the narrow web 4, as shown by the solid line in FIG.
The winding shaft 13A or 13B is supported by being fitted to the tip of 3A or 13B. Then, when the positions of the winding shafts 13A and 13B are exchanged by the rotation of the turret shaft 17, the winding shafts 13 are retracted to the frame 16 side as shown by phantom lines in FIG.

The winding shafts 13A and 13B are respectively provided with winding chucking claws 42 that can be retracted from the outer peripheral surface, and a large number of independent friction units 34 that can obtain a friction torque proportional to the air pressure are coaxially arranged side by side. (See FIG. 2) It is possible to change the winding torque by itself using a publicly known air friction shaft (for example, Japanese Unexamined Patent Publication No. Hei 3
-238254).

The outer circumference of each winding shaft 13A, 13B is shown in FIG.
As indicated by phantom lines, a plurality of cores 14 each having a width substantially equal to the width of the narrow web 4 to be cut (2 in FIG.
However, when the width of the narrow web 4 to be cut becomes wider than this, the friction unit 3 holds one winding core 14.
The number of 4 will also increase. When the narrow web 4 is alternatively wound around the winding shaft 13A or 13B by the winding unit 20, the two winding cores 14, 14 adjacent to the claw 42 of one friction unit 34 are wound.
Take-up shafts 13A and 1
3B is moved in the axial direction according to the position of the narrow web 4. In addition, a gap formed between the narrow webs 4 and 4 by the hollow slitter blades 3a and 3b so that the two winding cores 14 are set on the winding shaft 13A or 13B at a predetermined interval. A plate (not shown) having a thickness equal to 6 may be inserted between the adjacent winding cores 14 and 14 on the winding shafts 13A and 13B.

With such a structure, the narrow webs 4 can be wound with a winding tension proportional to the width of each of the narrow webs 4.

Next, the structure and operation of the web winding unit 20 for winding the narrow web 4 on the winding core 14 will be described with reference to FIG.

The web winding unit 20 comprises a pair of left and right web winding machines 2 arranged with the web winding position A interposed therebetween.
It is composed of 0L and 20R. FIG. 4A shows a state in which the narrow web 4 is wound around the winding core 14 on the winding shaft 13A, and the web winding machines 20L and 20R are in the retracted position. The web winding machines 20L and 20R each include a plurality of rollers 51 that are arranged parallel to the winding core 14 and are positionally changeable, and an endless belt 52 suspended between the rollers 51. Is configured so as to cover the required width with a winding belt having a sufficient width dimension which is equal to or larger than the length of the winding shafts 13A and 13B or a multi-belt belt.

FIG. 4B shows the operating positions of the web winding machines 20L and 20R when the winding direction of the narrow web 4 around the winding core 14 is the right direction. The innermost roller 51a extends to the right of the winding core 14 right above, and the inlet for the narrow web 4 is formed on the upper right side of the winding core 14 together with the innermost roller 51b of the right web winding machine 20R. Form. Then, the endless belts 52 of both the web winding machines 20L and 20R are in close contact with each other from the left and right along the peripheral surface of the winding core 14 and the winding shaft 13A.
As the web rotates clockwise, the left and right web winding machines 20
When the L and 20R endless belts 52 and 52 both rotate counterclockwise, the end portion of the narrow web 4 conveyed by the suction roller 10 and the nip roller 11 is wound right around the winding core 14. .

FIG. 4C shows the operating positions of the web winding machines 20L and 20R when the winding direction of the narrow web 4 around the winding core 14 is the left direction. The innermost roller 51b advances to the left of the position right above the winding core 14, and the innermost roller 51a of the web winding machine 20L on the left side is connected to the inlet of the narrow web 4 at the upper left of the winding core 14. Form. Then, the endless belts 52 of both the web winding machines 20L and 20R are in close contact with each other from the left and right along the peripheral surface of the winding core 14 and the winding shaft 13A.
As the endless belts 52, 52 of the left and right web wrapping machines 20L, 20R rotate in the clockwise direction in accordance with the counterclockwise rotation of, the end of the narrow web 4 turns left around the winding core 14. Wrapped around.

In this embodiment, by using the web winding unit 20 having such a structure,
It is possible to freely change the winding direction of the narrow web 4.

Next, the operation of the winding device body 12, the discharge of the product (roll of the narrow web 4 wound around the winding core 14) 53, and the supplying operation of the winding core 14 will be described.

When the winding of the narrow web 4 around the winding core 14 on one winding shaft 13A is completed, the self-propelled cutter unit 30 cuts the narrow web 4. Then, the winding shaft centering unit 29 separates from the winding shaft 13A and retreats toward the frame 16 side, and the turret shaft 17 rotates 180 ° counterclockwise in FIG. 1 to hold the product 53.
Is moved to the product discharge / core supply position B below. At the same time, at the product discharge / core supply position B below, the winding shaft 13B, to which the empty core 14 has already been attached, moves to the web winding position A above. Therefore, the web winding unit 20 described above operates to move the end portion of the narrow web 4 to the winding shaft 13B.
It winds around the empty winding core 14 held by, and the winding shaft 13B rotates to start winding the narrow web 4.

On the side of the product discharge / core supply position B, a product discharge / core supply pusher 54 is provided. When the product 53 descends to the product discharge / core supply position B, the product discharge / core supply pusher 54 moves leftward from the retracted position shown by the solid line in FIG. 1 and reaches the position shown by the phantom line. As shown in FIG. 3, the winding shaft 13A (the winding shaft 13B in FIG. 3) is engaged with the winding shaft 13A at the root position. Also,
Simultaneously with the movement of the product discharge / core supply pusher 54, the product discharge conveyor 55 rises to the product receiving position. Note that, for convenience of explanation, in FIG. 3, the product discharge / core supply pusher 54 is shown to move upward from the position indicated by the solid line, but in reality, it moves from the position before the winding shaft 13A toward the paper surface. It will be.

Next, after the claws 42 of the friction unit 34 of the winding shaft 13A are retracted, the product discharge / core supply pusher 54 is rotated by the winding shaft 1 as shown by the arrow in FIG.
By moving toward the front end side of 3A (or 13B), the product 53 is removed from the winding shaft 13A, is received by the product discharge conveyor 55, and the product discharge conveyor 55 that has received the product 53 descends. The product discharge / core supply pusher 54 returns to the retracted position shown by the solid line in FIGS. 1 and 3.
Next, the transport mechanism 56, which is schematically shown as an L-shaped body in FIG. 1, moves to the right to move the product discharge conveyor 55 that has received the product 53 to the product unloading position, and to move the empty core. The core supply conveyor 56 on which the 14 is placed discharges the product.
It is moved to the core supply position B. Then, the product discharge / core supply pusher 54 moves from the retracted position in the direction opposite to the direction in which the product is discharged, and mounts the core 14 on the winding shaft 13A. Next, the transport mechanism 57 returns to the left to return the product discharge conveyor 55 that has discharged the product 53 and the core supply conveyor 56 that has discharged the core 14 to the original position.

As described above, according to this embodiment, since the turret type winding device main body 12 and the product discharge / core feeding pusher 54 are provided, the multi-strand winding of the narrow web 4 is continuously performed. Can be done.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the overall configuration of an embodiment of a web multi-winding device according to the present invention.

FIG. 2 is an explanatory view showing a state in which a wide web is cut into three narrow webs in the apparatus in FIG. 1 and a relative positional relationship between a winding core chucking claw of a winding shaft and a winding core.

FIG. 3 is a front view showing the configuration of a winding device body in the device in FIG.

FIG. 4 is an explanatory diagram showing the configuration and operation of a web winding unit.

[Explanation of symbols]

 1 Wide Web 3 Slitter Units 3a, 3b Medium Slitting Blade 4 Narrow Web 5 Thread Ear 6 Gap 12 Winding Machine Main Body 13A, 13B Winding Shaft 14 Winding Core (Paper Tube) 15, 16 Frame 17 Turret Shaft 18 Winding Shaft moving arm 19 Turret arm 20 Winding unit 21 Turret turning motor 25 Winding shaft moving motor 27A, 27B Winding motor 29 Winding shaft alignment unit 30 Self-propelled cutter unit 34 Friction unit 42 Winding core chucking Claws 53 Products 54 Product discharge / core supply pushers 55 Product discharge conveyor 56 Core supply conveyor

Claims (3)

[Claims] 1. A wide original web is cut into a plurality of narrow webs by a slitter unit in a rewinding process, and the narrow webs are formed into a plurality of winding cores coaxially arranged on a winding shaft. In a multi-web web winding device configured to be continuously wound, the slitter unit includes a plurality of the wide webs in a manner such that a predetermined gap is formed between the narrow webs after cutting. A web multi-strand winding device comprising a hollow slitter blade capable of cutting into a narrow web. 2. A wide original web is cut into a plurality of narrow webs by a slitter unit in the process of rewinding, and the narrow webs are divided into a plurality of winding cores coaxially arranged on a winding shaft. In a multi-web web winding device configured to be continuously wound, the winding shaft includes a core chucking claw that can be retracted from an outer peripheral surface, and a friction torque proportional to air pressure can be obtained. 2. A web multi-winding device, comprising: an air friction shaft in which the friction units are coaxially arranged side by side, and the winding shaft is provided so as to be movable in the axial direction. 3. A blanking slitter blade capable of cutting the wide original web into the plurality of narrow webs in a manner that the slitter unit forms a predetermined gap between the narrow webs after cutting. It is provided, It is characterized by the above-mentioned.
The described web multi-winding device.