JP7173519B2 - Sheet take-up device - Google Patents

Description

The present invention relates to a sheet winding device for continuously winding a belt-shaped sheet such as a resin sheet.

Resin sheets are generally manufactured by extrusion molding, and after being continuously extruded from an extruder that performs the extrusion molding, the sheet is cut into a predetermined length to be a product, In some cases, the surface is processed in a post-process, such as printing, to be made into a product. In the production process of the latter product, at least one sheet winding device is installed for winding a sheet supplied from the upstream side around a spool mounted on the outer periphery of a winding shaft. The sheet winding device includes a turret for switching between a winding position for winding the sheet and an exchange position for exchanging the spool, with the two winding shafts integrally attached to the respective spools. A turret-type reel is often used, which is provided with a mechanism so that the sheet can be continuously wound without stopping the line for spool replacement.

In the turret-type sheet winding device as described above, the winding shaft at the winding position is usually replaced by operating the turret mechanism when the winding shaft at the winding position has wound a predetermined amount of sheets. At the replacement position, the winding shaft with a new spool attached is sent to the winding position to prepare for winding, and after cutting the sheet in the vicinity of the winding position, the upstream side of the sheet is cut. By bringing the end portion into close contact with the spool at the take-up position and rotating the take-up shaft at the take-up position together with the spool, the sheet is wound around the spool, and the sheet is taken up from the take-up shaft at the replacement position. The old spool is removed and a new spool is attached to the take-up shaft.

Here, as a means for adhering the upstream cut end of the cut sheet to the spool at the winding position, double-sided adhesive tape is attached to the outer peripheral surface of the spool mounted on the winding shaft at the replacement position. It is the simplest method to stick the double-sided adhesive tape on the spool. has to be done manually, and this work is costly and time-consuming.

On the other hand, in recent years, a turret-type sheet winding device equipped with a winding unit that can reliably and automatically bring the cut end of even a relatively rigid sheet into close contact with the spool at the winding position. are being developed.

For example, Patent Document 1 discloses a belt guide device having a first presser roll that contacts and separates from a spool at a winding position, a second presser roll that moves along the outer circumference of the spool, and a guide using a belt. and a cutter device for cutting the sheet on the downstream side of the winding position (automatic sheet winding device). In this state, the sheet is pressed against the spool at the take-up position by the first and second presser rolls, and the sheet is cut by the cutter device. The device is brought close to the spool to bring the upstream cut end of the sheet into close contact with the spool, and in this state, the winding shaft at the winding position is rotated integrally with the spool to wind the sheet around the spool. There has been proposed a sheet take-up device with

In addition, the sheet winding device proposed in Japanese Patent Application Laid-Open No. 2002-200000 has a presser roller and a guide roller that integrally come into contact with and separate from the spool at the take-up position, and the sheet is wound on the outer peripheral surface of the spool between the presser roller and the guide roller. , a charging device arranged upstream of the pressing roller, and a winding unit (guide mechanism) in which a guide roller is attached to a guide member that contacts and separates from the spool at the winding position, In a winding preparation state in which the winding shaft to which a new spool is attached is at the winding position, the sheet charged by the charging device is pressed against the spool at the winding position by the pressing roller and the guide roller, and the sheet is wound at the winding position. The sheet is cut by the cutting blade while the spindle is rotated integrally with the spool, and the guide roller is air-driven to rotate at a surface speed higher than the sheet transfer speed, thereby removing the sheet attracted to the spool by electrification upstream. A guide roller guides the cut end on the side between the guide member and the spool to wind the sheet around the spool.

JP-A-8-268605 JP 2016-3113 A

However, the sheet winding devices proposed in Patent Literatures 1 and 2 have complicated structures as described below, and the layout of the components is greatly restricted.

That is, the sheet winding device of Patent Document 1 requires a link mechanism for accurately moving the second presser roll along the outer circumference of the spool. It must be arranged in such a way that there is room for movement. On the other hand, in the sheet winding device of Patent Document 2, a charging device for attracting the cut end of the sheet to the spool is an essential component, and the cutting blade pulls the sheet on the outer peripheral surface of the spool before the winding operation. It should be arranged so that there is enough space for cutting.

For this reason, in these conventional sheet winding devices, each component including the winding unit is provided only above or below the sheet transfer position. Therefore, when a continuously supplied sheet is divided and wound on a plurality of spools, for example, when a sheet once wound during a sheet production process is rewound on a plurality of spools for printing processing, etc. , it is not possible to switch between forward winding (a winding method in which the winding direction is the same before and after rewinding) and reverse winding (a winding method in which the winding direction is opposite before and after rewinding) between spools. In such a case, if you want to switch between forward winding and reverse winding between spools, it is necessary to stop the line and reverse the mounting direction of the spool on the sheet unwinding device side. In addition to a significant drop in efficiency, this will lead to an increase in workload.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a sheet winding device capable of easily switching between normal winding and reverse winding between spools when a continuously supplied sheet is divided and wound on a plurality of spools. Make it an issue.

In order to solve the above-described problems, the present invention moves two winding shafts, to which spools for winding sheets are mounted, between a winding position for winding the sheets and an exchange position for exchanging the spools. a turret mechanism to be exchanged; and in a winding preparation state in which the turret mechanism sends the winding shaft on which the sheet has been wound to the exchange position, and the winding shaft whose spool has been exchanged is sent to the winding position, the winding position. A cutting blade that cuts the sheet in the vicinity thereof, and a winding unit that brings the upstream cut edge of the sheet cut by the cutting blade into close contact with the spool at the winding position. The sheet is wound around the spool by rotating the winding shaft at the winding position integrally with the spool while the upstream cut end of the sheet is in close contact with the spool at the winding position. In the sheet winding device,
The winding unit has a pair of upper and lower guide mechanisms that come into contact with and separate from the spool at the winding position, and the cutting blade is downstream of each guide mechanism in a state of being close to the spool at the winding position. The sheet is cut with
In the winding preparation state, the guide mechanisms of the winding unit are brought close to the spool at the winding position, one of the guide mechanisms presses the sheet against the spool, the cutting blade cuts the sheet, and the sheet is cut. A configuration in which the cut end of the sheet is fed between the other guide mechanism and the spool by pulling back the cut end on the upstream side to the winding position and rotating the winding shaft at the winding position integrally with the spool. It was adopted.

According to the above configuration, when the continuously supplied sheet is divided and wound on a plurality of spools, the turret is used when the two winding shafts to which the spools are attached are exchanged between the winding position and the exchange position. Forward and reverse winding can be easily switched between spools simply by appropriately selecting the direction of actuation of the mechanism.

Here, the pair of guide mechanisms of the winding unit rotates around a rotation center provided on each fixed member, and the cutting blade is attached to either one of the pair of guide mechanisms. With this configuration, the structure of the entire apparatus can be simplified as compared with the case where the cutting blade is separate from the winding unit and is brought into contact with and separated from the sheet.

Further, each of the guide mechanisms may employ a plurality of belt guides arranged in the seat width direction, each having a guide belt wound around a plurality of discs having an axis parallel to the seat width direction. Further, a guide member may be provided between adjacent belt guides in the sheet width direction to guide the cut edge of the sheet between the belt guide and the spool.

As described above, the sheet winding device of the present invention can easily switch forward winding and reverse winding between spools when a continuously supplied sheet is divided and wound on a plurality of spools. Therefore, compared with the conventional sheet winding device in which it is difficult to switch between normal winding and reverse winding, the operating rate of the line can be greatly improved, and the work load can be greatly reduced.

1 is a front view of a sheet winding device according to an embodiment; Top view of main part of FIG. Left side view of Fig. 1 Vertical front view for explaining the structure of the guide mechanism of FIG. (a) to (c) are explanatory diagrams of the sheet winding procedure at the time of upper winding. (a) to (c) are explanatory diagrams of the sheet winding procedure at the time of lower winding respectively

Embodiments of the present invention will be described below with reference to the drawings. This sheet winding device is installed in a resin sheet production line, and as shown in FIGS. 1), a stand (fixed member) 2 erected on the upper surface of the base 1, upper and lower take-up rolls 3 and a winding unit 4 attached to the stand 2, and a downstream side in the sheet transfer direction. and a turret mechanism 5 provided on the upper surface of the base 1 on the side.

The stand 2 includes a main stand 2a provided so as to sandwich the transfer position of the sheet S in plan view, and an auxiliary stand 2b provided inside the main stand 2a. At the upper end of the main stand 2a, a cylinder 6 is attached which extends and retracts in the vertical direction and rotatably supports the end of the upper take-up roll 3 with a rod. Further, the main stand 2a has guide rolls 7 for guiding the strip-shaped sheet S supplied from an upstream sheet unwinding device (not shown) between the upper and lower take-up rolls 3, 3, and the upper and lower take-up rolls 3. Guide rolls 8 , 9 , 10 are rotatably provided for guiding the sheet S coming out from between them toward the turret mechanism 5 .

Here, the upper take-up roll 3 is supported by the cylinders 6 at both ends as described above so that it can move up and down. On the other hand, the lower take-up roll 3 has both ends rotatably supported by the main stand 2a, and one end connected to a motor (not shown). Then, the cylinder 6 is operated to adjust the vertical position of the upper take-up roll 3 according to the thickness of the sheet S, and the lower take-up roll 3 is rotationally driven to supply from the upstream side. The sheet S is picked up by the upper and lower take-up rolls 3 and sent downstream.

The turret mechanism 5 includes a support frame 11, a rotating shaft 12 whose both ends are rotatably supported by the supporting frame 11, and fixed at a position closer to the center than both ends of the rotating shaft 12 so as not to interfere with the sheet S. a turret arm 13 extending diametrically from the center of the rotating shaft 12; A shaft 14 is provided. A paper spool (paper tube) 15 around which the sheet S is wound is attached to the outer periphery of the winding shaft 14 .

The rotating shaft 12 is installed on one side of the support frame 11 and rotated by a first motor 16 connected to one end of the rotating shaft 12 . On the other hand, each winding shaft 14 is installed at both lower portions of the support frame 11 and is rotated by a second motor 17 connected to one end of each winding shaft 14 via a rotation transmission mechanism. Two roll support portions 18 are provided at the central portion of each turret arm 13 and protrude on both sides in the radial direction of the rotation shaft 12. These roll support portions 18 support guide rolls 19 so as to be rotatable. .

Then, the rotating shaft 12 is driven by the first motor 16 to rotate the turret arm 13 around the rotating shaft 12 by 180°, thereby winding the sheet S on the two winding shafts 14 . The spool 15 is exchanged between the winding position and the exchange position where the spool 15 is exchanged.

The winding unit 4 includes a pair of upper and lower guide mechanisms 20a and 20b, a first winding cylinder 21 that connects the upper guide mechanism 20a to the main stand 2a, and a lower guide mechanism 20b that connects to the auxiliary stand 2b. It consists of a second winding cylinder 22 that

As shown in FIGS. 2 and 4, each of the guide mechanisms 20a and 20b has a winding arm 23 rotatably attached to both ends of the guide roll 10 at the most downstream side of the main stand 2a. Between the winding arms 23 on both sides, a small-diameter guide roll 24 and a band plate-like connecting member 25 are provided, and a plurality of pairs of belt guides 26 are attached to the connecting member 25 so as to be aligned in the sheet width direction. there is The belt guide 26 has a disk 28 having an axis parallel to the seat width direction attached to each of the bifurcated tip portions of a plate-like member 27 fixed to the connecting member 25, and the two disks 28 are elastic. A guide belt 29 made of rubber or the like is wrapped around the guide belt 29 . A winding roll 30 is provided between the plate members 27 of each pair of belt guides 26 .

In the upper guide mechanism 20a, a first guide shaft 31 is rotatably attached between winding arms 23 on both sides, and a plurality of plate-like first guide members 32 are wound around the first guide shaft 31. It is fixed at the same position in the sheet width direction as the application roll 30 . Connecting rods 33 extending in the radial direction are provided at both ends of the first guide shaft 31 , and the distal ends of the connecting rods 33 are rods of a first guide cylinder 34 rotatably attached to each winding arm 23 . It is rotatably connected with the part.

On the other hand, in the lower guide mechanism 20b, a second guide shaft 35 and a third guide shaft 36 are rotatably attached between the winding arms 23 on both sides. A plurality of plate-shaped second and third guide members 37 and 38 are fixed at the same position in the sheet width direction as the winding roll 30 . Connecting rods 39, 40 extending in the radial direction are provided at both ends of the second and third guide shafts 35, 36, and the distal ends of the connecting rods 39, 40 are rotatably attached to the respective winding arms 23. The second and third guide cylinders 41 and 42 are rotatably connected to the rod portions. The third guide cylinder 42 is attached to the winding arm 23 via a connecting member 43 of a strip.

As a result, when the first to third guide cylinders 34, 41, 42 are extended and contracted, the first to third guide shafts 31, 35, 36 rotate integrally with the first to third guide members 32, 37, 38. It is designed to

Further, the upper and lower guide mechanisms 20a and 20b are provided with sheet clamps 44 and 45 which are formed of two belt-like members and extend in the sheet width direction between the leading ends of the winding arms 23 on both sides, as will be described later. When cutting the sheet S, both sheet clamps 44 and 45 clamp the sheet S from above and below over its entire length. A cutting blade 46 that travels in the sheet width direction is provided between two belt-like members that constitute the sheet clamp 44 of the upper guide mechanism 20a.

As shown in FIG. 1, a connecting arm 47 projecting from each winding arm 23 of the upper guide mechanism 20a rotates with the rod portion of the first winding cylinder 21 rotatably attached to the main stand 2a. Each winding arm 23 of the lower guide mechanism 20b is rotatably connected to a rod portion of a second winding cylinder 22 rotatably attached to the auxiliary stand 2b. As a result, when the first winding cylinder 21 and the second winding cylinder 22 are extended and contracted, the upper and lower guide mechanisms 20a and 20b rotate around the axis of the most downstream guide roll 10 of the main stand 2a, thereby It is designed to come into contact with and separate from the spool 15 at the take-up position. At this time, the upper sheet clamp 44 and the cutting blade 46 rotate integrally with the upper guide mechanism 20a around the rotation center thereof, and the lower sheet clamp 45 rotates integrally with the lower guide mechanism 20b. Rotating around the rotation center, they come into contact with and separate from the sheet S, respectively.

Next, the operation of winding the sheet around the spool 15 at the winding position in this sheet winding device will be described. When the sheet S supplied from the upstream side is wound from the upper surface side of the spool 15 (hereinafter referred to as "upper winding"), first, upper and lower guide mechanisms 20a and 20b of the winding unit 4 as shown in FIG. is opened (separated from the spool 15 at the winding position), and the winding shaft 14 with the new spool 15 attached at the replacement position is sent to the winding position. Pass the sheet S upward.

Then, by operating the first winding cylinder 21 and the second winding cylinder 22, the upper and lower guide mechanisms 20a and 20b are rotated, and as shown in FIG. 4 and FIG. As shown, the upper and lower guide mechanisms 20a and 20b are closed (approaching the spool 15 at the winding position). At this time, the belt guides 26 of the guide mechanisms 20a and 20b have two discs 28 positioned on both sides of the spool 15 in the sheet transfer direction, and a part of the guide belt 29 bends to move the sheet S toward the upper surface of the spool 15. It is pressed (adhered). Also, the winding roll 30 is close to the spool 15 with a gap through which the sheet S is passed, and the first to third guide members 32, 37, 38 are open. Then, the upper and lower sheet clamps 44 and 45 and the cutting blade 46 are positioned downstream of the respective guide mechanisms 20a and 20b in a state of being close to the spool 15 and at a position where they do not interfere with the belt guide 26 or the third guide member 38. close to.

5A, the upper and lower sheet clamps 44 and 45 are operated to pinch the sheet S, and the cutting blade 46 is moved in the sheet width direction to cut the sheet S. As shown in FIG. After that, as shown in FIG. 5B, the take-up roll 3 (see FIG. 1) is reversed so that the upstream cut edge of the sheet S is positioned at the winding position (in this case, the elastic deformation region of the guide belt 29). The sheet S is pulled back until it reaches the downstream end). By operating the second and third guide cylinders 41 and 42 (see FIG. 4), the second and third guide shafts 35 and 36 are rotated to move the second and third guide members 37 and 38. close up.

By driving the second motor 17 (see FIG. 1) connected to the winding shaft 14 at the winding position from the state of FIG. The shaft 14 is rotated forward (counterclockwise in the figure) integrally with the spool 15, and the upstream cut edge of the sheet S is guided by the third guide member 38, and the belt guide 26 of the lower guide mechanism 20b is moved. The sheet is fed between the guide belt 29 and the spool 15, further guided by the second guide member 37, and fed between the guide belt 29 of the belt guide 26 of the upper guide mechanism 20a and the spool 15, and then onto the spool 15. Wrap the S.

After that, when the winding amount of the sheet S around the spool 15 reaches a predetermined amount, the upper and lower guide mechanisms 20a and 20b are opened so as not to interfere with the sheet S being wound around the spool 15. - 特許庁When the winding shaft 14 at the winding position winds up a predetermined amount of the sheet S, the turret arm 13 of the turret mechanism 5 is rotated upward by 180° to wind up the two winding shafts 14 . The spool 15 on which the sheet S is wound is removed from the winding shaft 14 sent to the replacement position, and a new spool 15 is attached to the winding shaft 14.例文帳に追加Mounting.

By repeating the above operation, even if the sheet S has a relatively high rigidity, the cut end of the sheet S can be reliably and automatically brought into close contact with the spool 15 at the winding position, and the winding operation can be continuously performed. can be done.

Also, when the sheet S supplied from the upstream side is wound from the bottom side of the spool 15 (hereinafter referred to as "lower winding"), the procedure is substantially the same as the above-described upper winding. That is, first, after the sheet S is passed under the spool 15 in a winding preparation state in which the upper and lower guide mechanisms 20a and 20b of the winding unit 4 are opened, the upper and lower guide mechanisms 20a and 20b are closed, and the cutting blade 46 cuts the sheet S. As shown in FIG. Thereafter, as shown in FIG. 6(b), the take-up roll 3 is reversed to pull back the sheet S until the upstream cut edge of the sheet S reaches the exit of the contact area between the spool 15 and the guide belt 29. By rotating the third guide shafts 31 and 36, the first guide member 32 and the third guide member 38 are closed. Then, as shown in FIG. 6(c), the winding shaft 14 at the winding position is rotated forward (clockwise rotation in the drawing) integrally with the spool 15, and the upstream cut end of the sheet S is moved to the third guide. The sheet S is wound around the spool 15 while being guided by the member 38 and the first guide member 32 .

After that, when the winding amount of the sheet S on the spool 15 reaches a predetermined amount, the upper and lower guide mechanisms 20a and 20b are opened, and when the winding shaft 14 at the winding position winds up the predetermined amount of the sheet S, Then, the turret arm 13 of the turret mechanism 5 is rotated downward by 180°, the positions of the two winding shafts 14 are exchanged to prepare for winding, and the winding shaft 14 sent to the exchange position is spooled. 15 should be exchanged.

In this sheet winding device, the sheet winding operation is performed as described above. Therefore, by appropriately selecting the rotation direction when rotating the turret arm 13, the same winding method can be obtained between the spools. You can continue or switch between normal winding and reverse winding.

That is, in the case of the first winding shown in FIG. 5, if the turret arm 13 is rotated (counterclockwise in FIG. 1) so that the wound sheet S passes above, the winding with the new spool 15 attached is performed. The take-up shaft 14 is sent from below to the winding position, and the sheet S is passed over the new spool 15, so that the same winding method is continued. On the other hand, if the turret arm 13 is rotated in the opposite direction (rotated to the right in FIG. 1), the sheet S is passed under the new spool 15, so that forward winding and reverse winding are switched (from forward winding to reverse winding). reverse winding or from reverse winding to forward winding).

In the case of lower winding shown in FIG. 6, forward winding and reverse winding can be switched by rotating the turret arm 13 so that the wound sheet S passes above. If the turret arm 13 is rotated again, the same winding method can be continued.

This sheet winding device has the above-described configuration, and when the sheet S continuously supplied from the upstream side is divided and wound on a plurality of spools 15, the two winding shafts to which the spools 15 are attached are used. Only by appropriately selecting the rotation direction of the turret arm 13 (operating direction of the turret mechanism 5) when replacing the spool 14 between the winding position and the replacement position, forward winding and reverse winding can be easily switched between the spools 15. Therefore, compared with the conventional sheet winding device in which it is difficult to switch between normal winding and reverse winding, the operating rate of the line can be improved and the workload can be reduced.

Further, since the cutting blade 46 for cutting the sheet S is attached to the guide mechanism 20a on the upper side of the winding unit 4, the cutting blade is separated from the winding unit separately from the sheet. , the structure of the whole device is simplified. Note that the cutting blade may be attached to the lower guide mechanism 20b.

Further, the sheet winding device of the present invention can wind not only the resin sheet as in the embodiment, but also strip-shaped sheets such as paper and laminated paper.

1 base 2 stand (fixing member)
3 Take-up roll 4 Winding unit 5 Turret mechanism 11 Support frame 12 Rotating shaft 13 Turret arm 14 Winding shaft 15 Spools 20a, 20b Guide mechanism 23 Winding arm 26 Belt guide 28 Disk 29 Guide belt 30 Winding roll 32, 37, 38 guide members 44, 45 sheet clamp 46 cutting blade S sheet

Claims (4)

a turret mechanism for switching two winding shafts to which spools for winding the sheets are attached between a winding position for winding the sheets and a replacement position for replacing the spools; and the turret mechanism for winding the sheets. a cutting blade for cutting the sheet in the vicinity of the winding position in a winding preparation state in which the wound winding shaft is sent to the replacement position and the winding shaft whose spool has been replaced is sent to the winding position; a winding unit that brings the upstream cut end of the sheet cut by the above into close contact with the spool at the winding position; A sheet winding device in which the sheet is wound around the spool by rotating the winding shaft at the winding position integrally with the spool while the sheet is in close contact with the spool,
The winding unit has a pair of upper and lower guide mechanisms that come into contact with and separate from the spool at the winding position, and the cutting blade is downstream of each guide mechanism in a state of being close to the spool at the winding position. The sheet is cut with
In the winding preparation state, the guide mechanisms of the winding unit are brought close to the spool at the winding position , one of the guide mechanisms presses the sheet against the spool, and the cutting blade cuts the sheet. The sheet is cut, the upstream cut end of the sheet is pulled back to the winding position, and the winding shaft at the winding position is rotated integrally with the spool, so that the cut end of the sheet is guided by each of the guide mechanisms. I am trying to send it between the other guide mechanism and the spool,
It is possible to selectively switch forward winding and reverse winding between the spools according to the operating direction of the turret mechanism when the two winding shafts to which the spools are attached are exchanged between the winding position and the exchange position. A sheet winding device characterized by: The pair of guide mechanisms of the winding unit rotate around a rotation center provided on each fixed member, and the cutting blade is attached to either one of the pair of guide mechanisms. The sheet winding device according to claim 1, characterized by: 2. Each of the guide mechanisms includes a plurality of belt guides arranged in the seat width direction, each of which has a guide belt wound around a plurality of discs having an axis parallel to the seat width direction. 3. The sheet winding device according to 2. Each of the guide mechanisms is provided with a guide member between adjacent belt guides in the sheet width direction and for guiding the cut edge of the sheet between the belt guide and the spool. The sheet winding device according to .

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