JP7555574B2 - Web Winding Device - Google Patents

Description

This invention relates to web winding devices such as slitters.

There is a device called a slitter that winds up a product sheet by continuously cutting a continuous long sheet-like roll of paper, film, metal foil, etc. into any desired vertical width while unwinding it (see, for example, Patent Document 1). The slitter has a winding shaft that rotates around its axis in the winding section, and a cylindrical winding core made of paper, plastic, etc. is attached to a collar that is rotatably fitted to the outside of the winding shaft to obtain a product in which the product sheet is wound around the winding core. Then, when winding is completed, the winding core is moved in the axial direction of the winding shaft, the winding core is removed from the winding shaft together with the wound product sheet, and a new winding core is attached to the winding shaft.

JP 2001-151392 A

When a new core is attached to the winding shaft, the axial position on the winding shaft is adjusted so that the sheet cut to a specified width is wound onto the core without misalignment. This adjustment of the core position is time-consuming.

The present invention has been proposed in consideration of the above problems associated with the conventional technology, and aims to provide a web winding device that simplifies the adjustment of the position of the winding core.

In order to overcome the above problems and achieve the intended object, the web winding device of the invention according to claim 1 of the present application comprises:
A winding shaft capable of supporting a winding core;
a holding means provided on the winding shaft and capable of holding the winding core;
a positioning member that is movable between a use position disposed adjacent to the winding shaft and a retracted position away from the winding shaft, the positioning member having an index portion for use when adjusting a position of the winding shaft on the core in the axial direction;
A detection means capable of detecting a position of the positioning member;
The gist of the present invention is that it is equipped with a control means that controls the holding means to change the holding state from a release state of the winding core to a holding state based on detection by the detection means that the positioning member, which is in the use position, has moved from the use position.
According to the invention of claim 1, by moving the positioning member used to adjust the position of the winding core, the winding core is held by the holding means without operating the holding means, thereby simplifying the work of adjusting the position of the winding core.

The invention according to claim 2 is characterized in that, when the holding means is in a state of holding the winding core, the control means controls the holding means to change from a holding state to a release state based on detection by the detection means that the positioning member, which is in the retracted position, has moved from the retracted position.
According to the invention of claim 2, the holding means is in the release state before adjusting the position of the core using the positioning member, so there is no need to perform the operation of changing it to the release state again.

In the invention according to claim 3, the detection means detects whether or not the positioning member is in the retracted position,
The control means controls the holding means to change the holding state from a release state of the core to a holding state based on detection by the detection means that the positioning member, which is in the use position, has returned to the retracted position.
According to the invention of claim 3, the condition for changing the state of the holding means is that the positioning member has returned to the retracted position, thereby preventing malfunction of the positioning member, such as being positioned at an intermediate position between the use position and the retracted position.

In a fourth aspect of the present invention, the control means allows the web winding device to operate when the detection means detects that the positioning member is in the retracted position.
According to the invention as defined in claim 4, the holding means is in the release state before adjusting the position of the core using the positioning member, so that there is no need to perform the operation of changing the holding means to the release state again.

The invention according to claim 5 is characterized in that, when the web winding device is operating, the control means controls the web winding device to stop based on movement of the positioning member from the retracted position.
According to the fifth aspect of the present invention, the positioning member can also be used as a safety device.

The web winding device of the present invention makes it easy to adjust the position of the winding core.

1 is a side view showing a schematic diagram of a slitter according to an embodiment of the present invention. FIG. 2 is a front view of the slitter of the embodiment, seen from the winding section side. FIG. 4 is a plan view showing a positioning means of the embodiment. FIG. 4 is a front view showing the positioning means of the embodiment. 5A and 5B are side views showing the positioning means of the embodiment, in which FIG. 5A shows the positioning member in the retracted position, and FIG. 5B shows the positioning member in the use position. FIG. 4 is a front view showing a main part of the winding section of the embodiment. FIG. 4 is a side view illustrating a first support portion of the embodiment. 4 is a flowchart showing the flow of a product roll removal operation in the embodiment. 4 is a flowchart showing the flow of a core positioning adjustment operation in the embodiment. FIG. 2 is a diagram showing the relationship between devices constituting the main part of the slitter of the embodiment.

Next, a preferred embodiment of the web winding device according to the present invention will be described below with reference to the attached drawings.

Examples of web winding devices that wind up a web after subjecting it to a specified processing or inspection include a slitter that cuts the web to the required width and winds it into a roll, and a rewinder that winds up a web once wound in a processing line after finishing processing, secondary processing, and the like. In the following embodiment, a slitter is used as an example. Examples of webs include synthetic resin films, paper, and metal foils such as aluminum, and a roll of a web wound around a core is called a roll. When making a particular distinction, the roll from which the web is unwound before processing is called a "raw roll," and the roll formed by winding up the web after the specified processing is called a "product roll (product)."

(Overview of the slitter)
As shown in Fig. 1, a slitter 10 according to the embodiment includes an unwinding section 18 that supports an original web roll 14, a cutting section 20 that cuts the web 12 to a predetermined width, and a winding section 22 that winds up the web 12 cut to the predetermined width to form a product roll 16. The slitter 10 has a pass line along which the web 12 runs from the unwinding section 18 to the winding section 22 by a plurality of main body rollers R installed between the unwinding section 18 and the winding section 22. The slitter 10 is configured to cut the web 12 unwound from the original web roll 14 supported by the unwinding section 18 in the flow direction of the web 12 in the middle of the pass line at the cutting section 20, and to divide the web 12 to the predetermined width into a plurality of portions at the winding section 22 and wind each portion around a winding core 26, thereby obtaining a product roll 16 in which the web 12 of the predetermined width is wound. In the slitter 10, signals from various sensors including a detection means S described below are input to a control means C, and each section operates based on a signal output from the control means C (see FIG. 10).

In the following description, the side of the slitter 10 where the unwinding section 18 is provided is referred to as the rear side, and the side where the winding section 22 is provided is referred to as the front side, and the front-rear direction is referred to as the rear side. Therefore, in the embodiment, the front side where the worker accesses the unwinding section 18 is the rear side of the slitter 10, and the front side where the worker accesses the winding section 22 is the front side of the slitter 10. In addition, in the slitter 10, the horizontal direction that intersects with the front-rear direction is referred to as the left-right direction, and the original roll 14 and the product roll 16 are supported so that the left-right direction is the axial direction of the core 26, and the width direction of the web 12 is the left-right direction. The running direction of the web 12 from the unwinding section 18 through the pass line to the winding section 22 is referred to as the flow direction of the web 12, and as shown in FIG. 1, the flow direction of the web 12 is guided by the main roller R and changes direction.

(Winding section)
As shown in Figures 2 and 6, the winding section 22 is provided with two parallel winding shafts 24 spaced apart from each other in two upper and lower stages. In the winding section 22, the web 12 cut in the cutting section 20 is distributed and wound onto the winding cores 26 attached to the upper and lower winding shafts 24, 24, respectively, to prevent the ends of the cut web 12 from overlapping each other. In the winding section 22, the web 12 is wound at a plurality of locations spaced apart in the left-right direction on the winding core 26, so that a plurality of product rolls 16 are formed on one winding core 26 (winding shaft 24) spaced apart in the left-right direction. In the winding section 22, positioning means for assisting in the positioning of the winding cores 26 attached to the winding shafts 24 are provided corresponding to the upper and lower winding shafts 24, 24 (see Figures 1 and 2).

(Winding shaft)
As shown in Fig. 6, the winding shaft 24 includes a plurality of winding units 28 mounted on the winding shaft 24 in a line in the left-right direction (axial direction of the winding shaft 24). Each winding unit 28 has a chuck (holding means) formed by a locking member 30 that can move forward and backward in the radial direction. The chuck can be changed under the control of a control means C between a holding state in which the locking member 30 protrudes radially outward to hold the winding core 26 and a holding release state in which the locking member 30 retracts radially inward to allow the winding core 26 to be attached and detached. Specifically, the winding shaft 24 has the winding core 26 mounted on the outside of the winding unit 28 in a holding release state in which the locking member 30 retracts radially inward to reduce the amount of protrusion from the outer circumferential surface of the winding unit 28. Then, the winding shaft 24 moves each of the multiple locking members 30 radially outward to a protruding position by air or a biasing means such as a spring built into the winding unit 28, thereby pressing the tips of the locking members 30 against the inside of the winding core 26 and fixing the winding core 26 to the winding unit 28. As a result, the attached winding core 26 rotates as the winding shaft 24 is driven to rotate.

As shown in FIG. 6, each winding shaft 24 is supported at its left end (one end) by the first support portion 32 and at its right end (the other end) by the second support portion 34. The first support portion 32 is configured to be operable by a cylinder 33 controlled by the control means C in a supported state (solid line in FIG. 7) in which it supports the left end of the winding shaft 24, and in a detached state (two-dot chain line in FIG. 7) in which it is separated from the left end of the winding shaft 24. When the first support portion 32 is in the detached state, the winding shaft 24 is supported by the second support portion 34 in a cantilever manner, and the winding core 26 can be attached from the left end, and the winding core 26 can be removed by pulling it out from the left end. The control means C can grasp in which state the first support portion 32 is in, such as in a supported state, by a sensor (not shown).

(Positioning Means)
3 to 5, the positioning means includes a positioning member 36 configured to be positionably changeable, and a detection means S that detects the position of the positioning member 36. The upper positioning means corresponding to the upper winding shaft 24 and the lower positioning means corresponding to the lower winding shaft 24 have the same configuration.

As shown in Figures 3 and 4, in the positioning member 36 of the embodiment, both ends of the rod-shaped body 36a are supported by arms 36b configured to be rotatable relative to the slitter body. The positioning member 36 has an indicator portion 38 attached to the rod-shaped body 36a. The indicator portion 38 of the embodiment is a collar having a screw that can be manually tightened or loosened, and the position of the rod-shaped body 36a in the left-right direction (axial direction) can be changed as desired. The rod-shaped body 36a of the embodiment is provided with a scale.

As shown in FIG. 5, the positioning member 36 is movable between a use position (FIG. 5(b)) located close to the winding shaft 24 and a retracted position (FIG. 5(a)) located away from the winding shaft 24. The positioning member 36 in the embodiment is moved from the retracted position to the use position by manual operation by an operator, and is also moved from the use position to the retracted position by manual operation by an operator. When the positioning member 36 in the embodiment is in the retracted position, it is disposed above the winding shaft 24 and at the rear of the device so as not to interfere with the web 12 or the product roll 16. When the positioning member 36 is in the use position, it is disposed at the upper rear of the winding shaft 24, and the indicator portion 38 is positioned so as to overlap in the left-right direction with the winding core 26 attached to the winding shaft 24.

The detection means S may be, for example, a non-contact or contact type such as a proximity sensor, and in the embodiment, a proximity sensor is used. As shown in FIG. 5, the detection means S in the embodiment is provided on a base that receives the base of the arm 36b in the retracted position, and detects whether the positioning member 36 is in the retracted position.

(Product roll removal process)
The flow of the positioning adjustment work of the core 24 will be described with reference to FIG. 8. The first support portion 32 is moved from the support state to the detachable state, and the left end of the winding shaft 24 is released (step R1: YES). At this time, if the chuck is in the release state (step R2: YES), the control means C controls the chuck to maintain the release state, thereby keeping the position of the core 26 in the left-right direction changeable. If the chuck is in the hold state (step R2: NO), the control means C controls the chuck to change from the hold state to the release state (step R3). In this way, since the chuck is in the release state before the product roll 16 is moved, it is not necessary to perform the operation of changing the state to the release state again. If the product roll 16 is present, the product roll 16 is removed, and the required number of cores 26 are fitted from the left end of the winding shaft 24, and the cores 26 are attached to the winding shaft 24 (step R4).

(Work flow for adjusting the position of the core)
The flow of the positioning adjustment work of the core 24 will be described with reference to FIG. 9. The positioning member 36 is moved from the retracted position to the use position (step S1). At this time, in the embodiment, the detection means S that detected the positioning member 36 in the retracted position is turned OFF, so that the control means C can determine that the positioning member 36 is not in the retracted position. The positioning member 36 is arranged in advance at a position where the index portion 38 is aligned with the product or the like, using the scale of the rod-shaped main body 36a. Then, the core 26 is abutted against the index portion 38 to adjust the position of the core 26 (step S4). If the chuck is in a holding state (step S2: NO) when the positioning member 36 is moved from the retracted position to the use position (detection means: OFF), the control means C controls the chuck to change to a holding release state (step S3). In this way, the chuck is in a holding release state before the positioning adjustment of the core 26 is performed using the positioning member 36, so there is no need to perform the operation of changing to the holding release state again.

When the position adjustment of the winding core 26 using the index portion 38 as an index is completed, the positioning member 36 is moved from the use position to the retracted position (step S5). As a result, the detection means S, which was OFF, turns ON, and the control means C determines that the positioning member 36 has been returned from the use position (step S6: YES). At this time, the control means C controls the chuck to change from the holding release state to the holding state (step S7). As a result, the winding core 26 whose position has been adjusted is held and fixed by the chuck, and the position adjustment of the winding core 26 is completed. In this way, the holding means is automatically changed from the holding release state to the holding state based on the movement of the positioning member 36 used to adjust the position of the winding core 26 from the use position, thereby saving the operator the trouble of changing the state of the chuck. Therefore, the position adjustment work of the winding core 26 can be simplified.

In this embodiment, the detection means S detects whether the positioning member 36 is in the retracted position. The control means C controls the chuck to change to the holding state when the detection means S detects that the positioning member 36 has returned to the retracted position from the use position. In this way, since the condition is that the positioning member 36 has returned to the retracted position, it is possible to prevent malfunctions of the positioning member 36, such as when the positioning member 36 is positioned midway between the use position and the retracted position.

When the detection means S detects that the positioning member 36 is in the retracted position, the control means C allows the slitter 10 to operate. In other words, the slitter 10 cannot operate while the positioning of the core 26 is being adjusted. In addition, since the operating condition of the slitter 10 is that the positioning member 36 has returned to the retracted position, it is possible to prevent malfunctions of the positioning member 36, such as positioning the positioning member 36 at an intermediate position between the use position and the retracted position. In addition, since there are two positioning means, one above and one below, the premise for operating the slitter 10 is that both the upper and lower positioning members 36, 36 are in the retracted position.

When the slitter 10 is operating, the control means C controls the slitter 10 to stop when the positioning member 36 moves from the retracted position. In this way, the positioning member 36 can also be used as a safety device.

The present invention is not limited to the specific description of the embodiment described above, and various modifications can be made.

10 Slitter (web winding device), 24 Winding shaft, 26 Winding core,
30 locking member (holding means), 36 positioning member, 38 indicator part,
C: control means, S: detection means

Claims (5)

A winding shaft capable of supporting a winding core;
a holding means provided on the winding shaft and capable of holding the winding core;
a positioning member that is movable between a use position disposed adjacent to the winding shaft and a retracted position away from the winding shaft, the positioning member having an index portion for use when adjusting a position of the winding shaft on the core in the axial direction;
A detection means capable of detecting a position of the positioning member;
and a control means for controlling the holding means to change the holding state from a release state of the winding core to a holding state based on detection by the detection means that the positioning member, which is in the use position, has moved from the use position. The web winding device according to claim 1, wherein the control means controls the holding means to change from a holding state to a release state when the holding means is in a state of holding the winding core, based on detection by the detection means that the positioning member in the retracted position has moved from the retracted position. The detection means detects whether the positioning member is in the retracted position,
The web winding device according to claim 1 or 2, wherein the control means controls the holding means to change the holding state from a release state of the winding core to a holding state based on detection by the detection means that the positioning member, which is in the use position, has returned to the retracted position. The web winding device according to any one of claims 1 to 3, wherein the control means allows the web winding device to operate when the detection means detects that the positioning member is in the retracted position. The web winding device according to any one of claims 1 to 4, wherein the control means controls the web winding device to stop based on the movement of the positioning member from the retracted position when the web winding device is operating.