CN112830292B

CN112830292B - Sheet winding device

Info

Publication number: CN112830292B
Application number: CN202011319801.6A
Authority: CN
Inventors: 藤井正典
Original assignee: Konan Design Industries Co ltd
Current assignee: Konan Design Industries Co ltd
Priority date: 2019-11-25
Filing date: 2020-11-23
Publication date: 2023-10-31
Anticipated expiration: 2040-11-23
Also published as: JP7317366B2; JP2021084717A; TW202126565A; CN112830292A

Abstract

The application provides a sheet coiling device capable of easily coping with the change of the outer diameter of a reel for coiling a sheet. The outer diameter of the reel (15) can be easily changed by having a structure in which, when the cut end of the sheet (S) is wound around the reel (15), the support roller (27) and the squeeze roller (29) are brought close to the reel (15), the guide belt (30) wound around the support roller (27) and the tension roller (28) is pressed against the upper and lower guide mechanisms (20 a, 20 b) of the reel (15), and the guide mechanisms (20 a, 20 b) are provided with: a support roller position adjustment machine that allows the support roller (27) to slide by rotation of the screw (41), and allows the position of the support roller (27) to be finely adjusted by operation of the support roller cylinder (34); a squeeze roller position adjustment mechanism that enables the squeeze roller (29) to move; and a tension adjustment mechanism that can adjust the tension of the guide belt (30) by moving the tension roller (28).

Description

Sheet winding device

Technical Field

The present application relates to a sheet winding apparatus for continuously winding a strip-like sheet such as a resin sheet.

Background

The resin sheet is generally produced by extrusion molding, and there are a resin sheet which is cut into a predetermined length to be a product after being continuously extruded by an extruder for extrusion molding, and a resin sheet which is wound while being kept in a belt-like state and is subjected to processing such as surface printing in a subsequent step to be a product. In the latter production process, at least one sheet winding device is provided that winds a sheet fed from the upstream side around a spool attached to the outer periphery of a winding shaft. As the sheet winding apparatus, a turntable mechanism is often used which is capable of integrally winding two winding shafts and reels attached to the two winding shafts between a winding position at which the winding of the sheet is performed and a replacement position at which the reels are replaced, and continuously winding the sheet without stopping the production line for reel replacement.

In the above-described turret type sheet winding apparatus, when a predetermined amount of sheet is wound around a winding shaft at a winding position, the winding shaft at the winding position is conveyed toward a switching position by operating a turret mechanism, the winding shaft with a new spool attached at the switching position is conveyed toward the winding position to be in a winding ready state, after the sheet is cut in the vicinity of the winding position, an upstream cut end portion of the sheet is brought into close contact with the spool at the winding position by a winding unit, and the winding shaft at the winding position is integrally rotated with the spool, whereby the sheet is wound around the spool (for example, see patent documents 1 and 2).

However, in the sheet winding device proposed in patent documents 1 and 2, the arrangement of the components is greatly restricted, and each component of the winding unit can be disposed only above or below the sheet transfer position. Therefore, when a continuously supplied sheet is divided and wound around a plurality of reels, for example, when a temporarily wound sheet is rewound around a plurality of reels for printing or the like during a production process of the sheet, it is impossible to switch between normal winding (winding mode in which the winding direction is the same before and after rewinding) and rewind winding (winding mode in which the winding direction is opposite before and after rewinding). In such a case, when the forward winding and the reverse winding are to be switched between the reels, the production line is stopped and the mounting direction of the reels is reversed on the side of the sheet unwinding device.

In contrast, the present inventors have developed a sheet winding apparatus (japanese patent application No. 2018-71384) in which, as winding means, a winding means having a pair of upper and lower guide mechanisms for bringing a winding drum into contact with or away from the winding drum at a winding position is employed, each guide mechanism of the winding means is brought close to the winding drum at the winding position in a winding preparation state, one of the guide mechanisms is used to press a sheet against the winding drum, the sheet is cut at a position downstream of the guide mechanism, the cut end portion on the upstream side of the sheet is pulled back to the winding position, and a winding shaft at the winding position is integrally rotated with the winding drum, whereby the cut end portion of the sheet is fed between the other guide mechanism and the winding drum.

According to the above configuration, when the continuously supplied sheet is divided and wound around the plurality of reels, the forward winding and the reverse winding can be easily switched between the reels by appropriately selecting the operation direction of the turntable mechanism when the two winding shafts on which the reels are mounted are exchanged between the winding position and the exchange position.

Patent document 1: japanese patent laid-open No. 8-268605

Patent document 2: japanese patent laid-open publication 2016-3113

However, in the production process of the resin sheet, when the produced sheet is hard and thick, the sheet wound by the sheet winding device has a strong winding inertia, and when the roll around which the sheet is wound is mounted on the sheet winding device in the subsequent process to start the processing in the subsequent process, there is a case where a problem occurs due to the winding inertia of the sheet. Accordingly, it is required to increase the outer diameter of the spool compared with the conventional art in order to reduce the winding inertia generated in the sheet winding device, depending on the type of the sheet.

However, in a general sheet winding apparatus, when a spool to be used is to be changed to a spool having a different outer diameter, in order to change the arrangement of the entire winding unit provided so as to surround the spool, it is necessary to perform a loading and unloading operation or the like of each component of the winding unit, and a large work load is generated due to a significant reduction in the production line operation rate. Regarding this problem, the same applies to the sheet winding-out device described in japanese patent application publication No. 2018-71384.

Disclosure of Invention

Accordingly, an object of the present application is to provide a sheet winding apparatus capable of easily coping with a change in an outer diameter of a roll around which a sheet is wound.

In order to solve the above-described problems, the present application provides a sheet winding apparatus comprising: a turntable mechanism that exchanges two winding shafts on which reels of a sheet are mounted between a winding position at which the reels of the sheet are wound and an exchange position at which the reels are exchanged; a cutting tool that cuts the sheet at a position downstream of the winding position in a winding preparation state in which the winding shaft around which the sheet is wound is conveyed to the exchange position by the turntable mechanism and the winding shaft around which the exchange of the reel is completed is conveyed to the winding position; and a winding unit having a pair of upper and lower guide mechanisms for contacting and separating the winding drum at the winding position,

in the winding preparation state, the guide mechanisms of the winding unit are brought close to the winding drum at the winding position, the sheet is pressed against the winding drum by one of the guide mechanisms, the sheet is cut by the cutting blade, the cut end portion on the upstream side of the sheet is pulled back to the winding position, the winding shaft at the winding position is rotated integrally with the winding drum, the cut end portion of the sheet is fed between the other guide mechanism and the winding drum, the sheet is wound around the winding drum,

the above-mentioned sheet winding apparatus is characterized in that,

the guide mechanism is a mechanism for winding a guide belt around a pair of support rollers having an axis parallel to the sheet width direction, and when the guide mechanism approaches the reel at the winding position, the pair of support rollers are located on the upstream side and the downstream side with respect to the axis of the reel at the winding position, the guide belt is pressed against the outer periphery of the reel at the winding position,

the sheet winding apparatus is provided with: a backup roller position adjustment mechanism that adjusts a position of the backup roller when the guide mechanism is brought close to the winding drum at the winding position; and a tension adjusting mechanism for adjusting the tension of the guide belt.

According to the above configuration, when the reels to be used are switched to reels having different outer diameters, the winding operation using the new reel can be started without performing the loading/unloading operation or the like of each component of the winding unit, that is, the support roller position adjusting mechanism is operated, the position of the support roller, which is the component of the winding unit, is changed in accordance with the outer diameter of the new reel, and the tension adjusting mechanism is operated to adjust the tension of the guide belt after the change in the support roller position to an appropriate level.

As the support roller position adjustment mechanism, a pair of support members that rotatably support the support rollers in the sheet conveying direction, one of the pair of support members is right-handed screwed to a screw extending in the sheet conveying direction on both sides in the sheet width direction, the other is left-handed screwed to the screw, and the screw is rotated, whereby the pair of support members and the support rollers supported by the pair of support members integrally move in opposite directions in the sheet conveying direction. In this case, the support body of the support roller position adjustment mechanism may include: a thread-engaging portion engaged with the right-hand thread or the left-hand thread of the screw; a rotation unit that rotatably mounts to the screw joint unit in a vertical plane and supports the backup roller; and an auxiliary operation unit that rotates the rotation unit, wherein the position of the support roller can be easily finely adjusted by an operation of the auxiliary operation unit of the support body after the support body and the support roller are integrally moved by rotation of the screw.

The tension adjustment mechanism may be configured to include at least one tension roller having an axis parallel to the sheet width direction and winding the guide belt together with the support roller, and the tension adjustment mechanism may be configured to move the tension roller in a direction in which the tension of the guide belt changes. Specifically, for example, at least one of the tension rollers is supported by a tension roller lever fixed to a tension roller rotating shaft having an axis parallel to the sheet width direction, and the sheet winding device is provided with a tension roller operating portion for rotating the tension roller rotating shaft.

Further, when a mechanism is employed in which a pinch roller for pressing the guide belt against the outer periphery of the roll in the winding position and a pinch roller position adjusting mechanism for adjusting the position of the pinch roller are provided between the pair of support rollers, the winding of the cut end portion of the sheet onto the roll can be performed more smoothly without being affected by the outer diameter of the roll.

As described above, in the sheet winding apparatus according to the present application, in a state in which the pair of upper and lower guide mechanisms of the winding unit press the guide belts wound around the pair of support rollers against the outer periphery of the roll at the winding position, the cut end portion of the sheet is wound around the roll, and when the used roll is switched to a roll having a different outer diameter, the winding operation can be started by merely operating the support roller position adjustment mechanism and the tension adjustment mechanism to change the position of the support roller and to adjust the tension of the guide belts, so that the operation rate of the production line can be greatly improved and the work load can be greatly reduced as compared with the conventional sheet winding apparatus requiring the loading and unloading operations of the respective constituent elements of the winding unit.

Drawings

Fig. 1 is a front view of a sheet winding apparatus of an embodiment.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is an enlarged front view of the upper guide mechanism of fig. 1.

Fig. 4 is an enlarged longitudinal cross-sectional front view of the main portion of fig. 3 (state in which the guide mechanism is closed).

Fig. 5 is an enlarged top view of the main portion of fig. 3.

Fig. 6 is a cross-sectional view taken along line VI-VI of fig. 5.

Fig. 7 (a) to 7 (c) are explanatory views of a sheet winding sequence at the time of winding up.

Fig. 8 is a front vertical sectional view showing a state in which the arrangement of the components of the guide mechanism is changed in accordance with fig. 4.

Description of the reference numerals

1 … base station; 2 … bracket (fixing member); 3 … pull rolls; 4 … winding units; 5 … turret mechanism; 11 … support frame; 12 … turret rotation shaft; 13 … turret arm; 14 … reel shaft; 15 … reel; 20a, 20b … guide mechanism; 24 … cut-off tool; 25 … winding arm; 27 … support rollers; 28 … tensioning roller; 29 … squeeze rolls; 30 … guide strips; 31 … support; 32 … threaded joint; 33 … rotation part; 34 … a cylinder (auxiliary operating section) for supporting the roller; 37 … slide plate; 40 … support roll handles; 41 … screw; 50 … cylinders for tensioning rollers; 52 … cylinders for squeeze rolls; s … sheet.

Detailed Description

Hereinafter, embodiments of the present application will be described with reference to the drawings. The sheet winding apparatus is provided in a production line of a resin sheet, and includes, as shown in fig. 1: a rectangular plate-like base 1 fixed to the floor surface F, a bracket (fixing member) 2 standing on the upstream side in the sheet conveying direction (arrow direction in fig. 1) and standing on the upper surface of the base 1, an up-and-down pulling roller 3 and a winding unit 4 mounted on the bracket 2, and a turntable mechanism 5 provided on the upper surface of the base 1 on the downstream side in the sheet conveying direction.

The holder 2 includes a main holder 2a provided so as to sandwich the transfer position of the sheet S in a plan view, and an auxiliary holder 2b provided inside the main holder 2 a. A cylinder 6 is attached to the upper end of the main bracket 2a to expand and contract in the vertical direction, and rotatably supports the end of the upper traction roller 3 by a rod. The main support 2a is rotatably provided with guide rollers 7 for guiding the belt-like sheet S fed by an upstream sheet winding-out device (not shown) between the upper and lower traction rollers 3, and guide rollers 8, 9, 10 for guiding the sheet S coming out from between the upper and lower traction rollers 3 toward the turntable mechanism 5.

Here, the upper pulling roller 3 is supported at both ends by the cylinder 6 as described above so as to be capable of being lifted and lowered. On the other hand, the lower traction roller 3 is connected to a motor, not shown, at one end portion thereof in a state where both end portions are rotatably supported by the main support 2 a. Then, in a state where the vertical position of the upper pull roller 3 is adjusted according to the thickness of the sheet S by operating the cylinder 6, the lower pull roller 3 is rotationally driven, and the sheet S fed from the upstream side is pulled by the upper and lower pull rollers 3 and conveyed to the downstream side.

As shown in fig. 1 and 2, the turntable mechanism 5 includes: the sheet winding device includes a support frame 11, a turntable rotating shaft 12 rotatably supported at both ends of the support frame 11, turntable arms 13 fixed at positions closer to the center than both ends of the turntable rotating shaft 12 and fixed at positions not interfering with the sheet S, the turntable arms 13 extending in the diameter direction from the center of the turntable rotating shaft 12, and two winding shafts 14 rotatably and detachably attached to one end and the other end of the turntable arms 13 at both sides. A paper roll (paper tube) 15 around which the sheet S is wound is attached to the outer periphery of the winding shaft 14.

The turntable rotation shaft 12 is rotatably driven by a first motor 16 provided at an upper portion of one side of the support frame 11 and connected to one end of the turntable rotation shaft 12. On the other hand, each winding shaft 14 is rotatably driven by a second motor 17 provided at lower portions of both sides of the support frame 11 and connected to one end of each winding shaft 14 via a rotation transmission mechanism. Further, two roller support portions 18 protruding to both sides in the radial direction of the turntable rotation shaft 12 are provided at the center portion of each turntable arm 13, and the guide roller 19 is rotatably supported by these roller support portions 18.

Further, the turntable rotation shaft 12 is driven by the first motor 16, and the turntable arm 13 is rotated 180 ° around the turntable rotation shaft 12, whereby the two winding shafts 14 are exchanged between the winding position at which the winding of the sheet S is performed and the exchange position at which the exchange of the reels 15 is performed.

As shown in fig. 1, the winding unit 4 includes a pair of upper and lower guide mechanisms 20a and 20b, a first winding cylinder 21a connecting the upper guide mechanism 20a to the main frame 2a, and a second winding cylinder 21b connecting the lower guide mechanism 20b to the auxiliary frame 2b. Further, a guide roller 22 and a sheet nip plate 23 formed of two belt-like members and extending in the sheet width direction are provided at the tip end portions of the guide mechanisms 20a and 20b, and a cutter 24 (see fig. 3) that moves in the sheet width direction is provided between the two belt-like members of the upper guide mechanism 20a that constitute the sheet nip plate 23.

Each of the guide mechanisms 20a and 20b has a winding arm 25 rotatably attached to the small diameter portion at both ends of the guide roller 10 at the most downstream of the main stand 2 a. The connection arm 26 protruding from each winding arm 25 of the upper guide mechanism 20a is rotatably connected to the rod of the first winding cylinder 21a, the rod of the first winding cylinder 21a is rotatably mounted to the main support 2a, each winding arm 25 of the lower guide mechanism 20b is rotatably connected to the rod of the second winding cylinder 21b, and the rod of the second winding cylinder 21b is rotatably mounted to the auxiliary support 2b. As a result, when the first winding cylinder 21a and the second winding cylinder 21b are extended and contracted, the guide mechanisms 20a and 20b rotate around the shaft center of the guide roller 10 at the most downstream of the main frame 2a, and the guide roller 22, the sheet clamping plate 23, and the cutter 24 contact or separate the sheet S at the downstream side of the winding position while contacting or separating the platen 15 at the winding position. Further, a notch 25a (see fig. 3) for avoiding interference with the end of the winding shaft 14 is provided at the longitudinal center of each winding arm 25.

As shown in fig. 3 and 4, a pair of support rollers 27, a pair of tension rollers 28, and a pair of squeeze rollers 29 are provided between the winding arms 25 on both sides of the guide mechanisms 20a and 20b, respectively, in parallel with the sheet width direction, and a guide belt 30 made of elastic rubber or the like is wound around each of the pair of support rollers 24 and tension rollers 28. When the guide mechanisms 20a and 20b approach the spool 15 at the winding position, the pair of support rollers 27 are positioned on the upstream side and the downstream side with respect to the axial center of the spool 15, the pressing roller 29 is positioned above or below the axial center of the spool 15, and the guide belt 30 is pressed against the outer periphery of the spool 15 between the support rollers 27 by the support rollers 27 and the pressing roller 29.

The guide mechanisms 20a and 20b are provided with a backup roller position adjustment mechanism for adjusting the position of the backup roller 27 when the spool 15 approaches the winding position, a tension adjustment mechanism for adjusting the tension of the guide belt 30, and a squeeze roller position adjustment mechanism.

As shown in fig. 4 to 6, the above-described backup roller position adjustment mechanism rotatably supports each backup roller 27, and includes: a pair of front and rear (sheet conveying direction) support bodies 31 slidably held by the winding arms 25 on both sides in the sheet conveying direction, and a pair of left and right (sheet width direction) screws 41 extending in the sheet conveying direction on both sides in the sheet width direction, which are screwed with one of the pair of support bodies 31 and screwed with the other.

The front and rear pair of support bodies 31 includes: a pair of right and left screw-coupled portions 32 coupled with right or left screws of the screw 41, a rotating portion 33 rotatably mounted on the right and left screw-coupled portions 32 in a vertical plane, and a cylinder 34 for the backup roller serving as a pair of right and left auxiliary operation portions for rotating the rotating portion 33.

The left and right screw coupling portions 32 are each composed of a screw block 35 passing through the screw 41, three sliders 36 slidably engaged with a guide rail 25b (omitted in fig. 4) attached to the inner side surface of the winding arm 25, and a slide plate 37 to which the screw block 35 and each slider 36 are fixed. The turning section 33 is constituted by a support roller turning shaft 38 rotatably supporting both end portions of the slide plate 37, a rectangular plate-shaped turning plate 39 extending in the sheet width direction and attached to the outer periphery of the support roller turning shaft 38, and support roller handles 40 attached to the left and right side surfaces of the turning plate 39 and rotatably supporting the end portions of the support roller 27. The main body of the left and right support roller cylinders 34 is rotatably supported by an attachment plate 37a that forms part of the slide plate 37, and the rod tip is rotatably coupled to the support roller handle 40.

On the other hand, a pair of left and right screws 41 rotatably support both end portions of the winding arm 25, and a bevel gear 42 is fixed to one end thereof. Further, an operation-side bevel gear 43 meshed with each bevel gear 42 is fixed to the outer periphery of a gear shaft 44 having an axis parallel to the sheet width direction. The gear shaft 44 rotatably supports both ends of the left and right winding arms 25, and a hexagonal screw operation piece 45 is attached to a protruding portion protruding from one winding arm 25.

Accordingly, by holding the screw operation piece 45 by an appropriate tool or the like and integrally rotating the gear shaft 44 and the right and left operation-side bevel gears 43, the pair of right and left screws 41 are rotated, and the pair of front and rear supporting bodies 31 screwed to the screws 41 and the supporting rollers 27 respectively supported thereby are integrally moved in the sheet conveying direction in the opposite directions.

Further, by operating the support roller cylinder 34, the support roller handle 40, the rotation plate 39, the support roller rotation shaft 38, and the support roller 27 can be integrally rotated around the axis of the support roller rotation shaft 38, and the position of the support roller 27 can be finely adjusted.

The tension adjustment mechanism moves the tension roller 28 on the upstream side in the direction of tension change of the guide belt 30 (omitted in fig. 5 and 6), and includes: the sheet feeding device includes a tension roller rotating shaft 46 having an axis parallel to the sheet width direction and rotatably supporting both end portions to the left and right winding arms 25, a left and right pair of tension roller handles 47 fixed to the tension roller rotating shaft 46 and rotatably supporting the tension roller 28 on the upstream side, and a tension roller operating portion 48 for rotating the tension roller rotating shaft 46. The tension roller operating portion 48 is composed of an operating side lever 49 fixed to a protruding portion of the tension roller rotating shaft 46 protruding from the winding arm 25, and a tension roller cylinder 50, and a main body portion of the tension roller cylinder 50 is rotatably supported by the winding arm 25, and a lever tip portion is rotatably coupled to the operating side lever 49. The downstream tension roller 28 rotatably supports both end portions of the left and right winding arms 25.

Accordingly, by operating the tension roller cylinder 50, the operation side lever 49, the tension roller rotation shaft 46, the tension roller lever 47, and the tension roller 28 on the upstream side can be integrally rotated around the axis of the tension roller rotation shaft 46, thereby adjusting the tension of the guide belt 30.

The squeeze roller position adjusting mechanism is configured by a pair of left and right sliders 51 rotatably supporting the squeeze roller 29 and held by the winding arms 25 on both sides so as to be slidable in a direction orthogonal to the sheet conveying direction in the vertical plane, and a squeeze roller cylinder 52, and a main body portion of the squeeze roller cylinder 52 is fixed to the winding arm 25, and a rod tip portion is connected to the sliders 51.

Therefore, the position of the squeeze roller 29 can be adjusted by operating the squeeze roller cylinder 52 to slide the slide sheet 51 integrally with the squeeze roller 29.

Next, a sheet winding operation performed on the spool 15 at the winding position in the sheet winding apparatus will be described. When the sheet S fed from the upstream side is wound from the upper surface side of the roll 15 (hereinafter referred to as "winding"), first, the up-down guide mechanisms 20a and 20b of the winding unit 4 are opened (separated from the roll 15 in the winding position) as shown in fig. 1, and the sheet S is passed over the new roll 15 in a winding ready state in which the winding shaft 14 having the new roll 15 attached in the exchange position is conveyed toward the winding position.

Then, by operating the first winding cylinder 21a and the second winding cylinder 21b, the upper and lower guide mechanisms 20a and 20b are rotated, and as shown in fig. 4, the upper and lower guide mechanisms 20a and 20b are closed (the state of the spool 15 approaching the winding position).

At this time, as shown in fig. 7 (a), the pair of support rollers 27 are located upstream and downstream of the axial center of the spool 15 with respect to the guide mechanisms 20a and 20b, and the squeeze rollers 29 are located up and down of the spool 15. The pair of support rollers 27 and the pressing roller 29 of the upper guide mechanism 20a press (closely contact) the guide belt 30 and the sheet S on the upper surface side of the platen 15, and the pair of support rollers 27 and the pressing roller 29 of the lower guide mechanism 20b press only the guide belt 30 on the lower surface side of the platen 15. Although not shown, the upper and lower guide rollers 22, the sheet clamping plate 23, and the cutting blade 24 approach the sheet S in the vicinity of the turntable rotation shaft 12.

From the state of fig. 7 (a), the upper and lower sheet clamping plates 23 are operated to clamp the sheet S, and the cutting blade 24 is moved in the sheet width direction to cut the sheet S. Thereafter, as shown in fig. 7 b, the pulling roller 3 (see fig. 1) is reversed, and the sheet S is pulled back until the cut end portion on the upstream side of the sheet S reaches the winding position. Then, by driving the second motor 17 (see fig. 1) connected to the winding shaft 14 at the winding position, as shown in fig. 7 (c), the winding shaft 14 and the drum 15 are rotated integrally (rotated leftward in the drawing), and the cut end portion on the upstream side of the sheet S is fed between the guide belt 30 of the lower guide mechanism 20b and the drum 15, and further between the guide belt 30 of the upper guide mechanism 20a and the drum 15, so that the sheet S is wound around the drum 15.

Thereafter, the up-and-down guide mechanisms 20a, 20b are opened at the timing when the amount of the sheet S wound on the drum 15 reaches the predetermined amount so as not to interfere with the sheet S wound on the drum 15. Then, when the winding shaft 14 in the winding position winds a predetermined amount of the sheet S, the turret arm 13 of the turret mechanism 5 is rotated by 180 ° to change the two winding shafts 14 between the winding position and the exchange position, thereby bringing the two winding shafts 14 into a winding ready state, removing the spool 15 from the winding shaft 14 fed to the exchange position, and attaching a new spool 15 to the winding shaft 14.

By repeating the above-described operation, even if the rigidity of the sheet S is relatively high, the cut end portion 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.

Although not shown, when the sheet S fed from the upstream side is wound from the lower surface side of the roll 15 (hereinafter, referred to as "lower roll"), the order thereof is substantially the same as that of the upper roll described above. That is, first, after the sheet S is passed under the spool 15 in the winding ready state in which the upper and lower guide mechanisms 20a and 20b of the winding unit 4 have been opened, the upper and lower guide mechanisms 20a and 20b are closed, and the sheet S is cut by the cutter 24. Then, the pull roller 3 is reversed, the sheet S is pulled back until the cut end portion on the upstream side reaches the winding position, and the winding shaft 14 at the winding position is rotated integrally with the winding drum 15 (in the opposite direction to the winding up), so that the sheet S is wound around the winding drum 15.

Thereafter, the up-and-down guide mechanisms 20a and 20b may be opened at the timing when the amount of the sheet S wound onto the reel 15 reaches a predetermined amount, the turret arm 13 of the turret mechanism 5 may be rotated 180 ° down at the timing when the predetermined amount of the sheet S is wound onto the winding shaft 14 at the winding position, the positions of the two winding shafts 14 may be changed to a winding ready state, and the reel 15 may be exchanged with respect to the winding shaft 14 which is fed to the exchange position.

In this sheet winding apparatus, since the sheet winding operation is performed in the manner described above, when the sheet S continuously fed from the upstream side is divided and wound around the plurality of reels 15, the same winding method can be continuously performed between the reels 15 and the forward winding and the backward winding can be switched by appropriately selecting the rotation direction of the turret arm 13 (the operation direction of the turret mechanism 5) when the two winding shafts 14 are switched between the winding position and the switching position.

That is, in the case of winding up, if the turntable arm 13 is rotated (left rotation in fig. 1) so that the wound sheet S passes over the turntable rotation shaft 12, the winding shaft 14 to which the new spool 15 is attached is sent from below to the winding position, and the sheet S passes over the new spool 15, so that the same winding manner is continued. On the other hand, when the turret arm 13 is rotated in the opposite direction (right rotation in fig. 1), the sheet S passes under the new reel 15, and therefore, the forward winding and the reverse winding can be switched (the winding mode is changed from the forward winding to the reverse winding, or from the reverse winding to the forward winding). In the case of rewinding, the forward winding and the reverse winding can be switched by rotating the turret arm 13 so that the wound sheet S passes over the turret rotating shaft 12, and the same winding can be continued by rotating the turret arm 13 in the opposite direction.

In this sheet winding apparatus, when the used roll 15 is switched to a roll having a different outer diameter, the support roller position adjustment mechanism and the squeeze roller position adjustment mechanism of the upper and lower guide mechanisms 20a and 20b are operated in a winding ready state, the support roller 27 and the squeeze roller 29 are moved in accordance with the outer diameter of the new roll 15, and the tension adjustment mechanism is operated to adjust the tension of the guide belt 30 to an appropriate level, whereby the winding operation using the new roll 15 can be started without performing the loading/unloading operation or the like of each component of the winding unit 4.

For example, fig. 8 shows a state at the start of winding when a reel 15 having a larger outer diameter than the reel 15 is used, with reference to the reel 15 shown in fig. 4. In the state of fig. 8, from the state of fig. 4, the screw 41 is rotated by operating the screw operation piece 45 of the support roller position adjustment mechanism, the support rollers 27 on the upstream side and the downstream side are slid in the direction away from each other integrally with the support body 31, the support roller cylinders 34 are operated to finely adjust the positions of the support rollers 27, the squeeze roller cylinder 52 of the squeeze roller position adjustment mechanism is operated to move the squeeze roller 29 in the direction away from the support rollers 27, and the tension roller cylinder 50 of the tension adjustment mechanism is operated to rotate the tension roller 28 on the upstream side to adjust the tension of the guide belt 30.

As described above, in the sheet winding apparatus, when the outer diameter of the spool 15 is switched, the support roller position adjustment mechanism, the squeeze roller position adjustment mechanism, and the tension adjustment mechanism are operated to easily cope with the change, and therefore, the operation rate of the production line can be greatly improved and the work load can be greatly reduced as compared with the conventional sheet winding apparatus which requires the loading and unloading operations of the respective components of the winding unit.

The sheet winding device of the present application can be used not only for the resin sheet as in the embodiment but also for a strip-shaped sheet such as paper or laminated paper.

Claims

1. A sheet winding device is provided with: a turntable mechanism that exchanges two winding shafts on which reels of a sheet are mounted between a winding position at which the reels of the sheet are wound and an exchange position at which the reels are exchanged; a cutting tool that cuts a sheet at a position downstream of a winding position in a winding preparation state in which the turntable mechanism sends a winding shaft from which the sheet is wound to the exchange position and sends the winding shaft from which the exchange of the reels is completed to the winding position; and a winding unit having a pair of upper and lower guide mechanisms that contact with or separate from the spool at the winding position,

in the winding preparation state, the guide mechanisms of the winding unit are brought close to the winding drum at the winding position, the sheet is pressed against the winding drum by one guide mechanism of the pair of upper and lower guide mechanisms, the sheet is cut by the cutting blade, the cut end portion on the upstream side of the sheet is pulled back to the winding position, the winding shaft at the winding position is rotated integrally with the winding drum, the cut end portion of the sheet is fed between the other guide mechanism and the winding drum, the sheet is wound around the winding drum,

the sheet winding apparatus is characterized in that,

the guide mechanism is a mechanism in which a guide belt is wound around a pair of support rollers having an axis parallel to the sheet width direction, and when the guide mechanism approaches the reel at the winding position, the pair of support rollers are positioned on the upstream side and the downstream side with respect to the axis of the reel at the winding position, the guide belt is pressed against the outer periphery of the reel at the winding position,

the sheet winding device is provided with: a backup roller position adjustment mechanism that adjusts a position of the backup roller when the guide mechanism is brought close to the spool at the winding position; and a tension adjusting mechanism that adjusts tension of the guide belt,

the pair of support rollers rotatably support the support rollers, one of the pair of support rollers is engaged with a screw extending in the sheet conveying direction by right-handed screw on both sides in the sheet width direction, and the other of the pair of support rollers is engaged with the screw by left-handed screw, so that the screw is rotated, and the pair of support rollers integrally supported by the pair of support rollers are moved in opposite directions to each other in the sheet conveying direction.

2. The sheet winding apparatus according to claim 1, wherein,

the support body of the support roller position adjustment mechanism includes:

a thread joint part which is combined with the right-handed thread or the left-handed thread of the screw;

a rotation unit that rotatably mounts to the screw joint unit in a vertical plane and supports the support roller; and

and an auxiliary operation part for rotating the rotation part.

3. The sheet winding apparatus according to claim 1 or 2, wherein,

the tension adjustment mechanism is provided with at least one tension roller having an axis parallel to the sheet width direction and winding the guide belt together with the support roller, and moves the tension roller in a direction in which the tension of the guide belt changes.

4. A sheet winding apparatus according to claim 3, wherein,

at least one of the tension rollers is supported by a tension roller handle fixed to a tension roller rotating shaft having an axis parallel to a sheet width direction, and the sheet winding device is provided with a tension roller operating portion that rotates the tension roller rotating shaft.

5. The sheet winding apparatus according to claim 1 or 2, wherein,

a squeeze roller for pressing the guide belt against the outer periphery of the spool at the winding position, and a squeeze roller position adjusting mechanism for adjusting the position of the squeeze roller are provided between the pair of support rollers.