CN112830292B - Sheet winding device - Google Patents

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 take-up device

Technical field

The present invention relates to a sheet winding device that continuously winds a strip-shaped sheet such as a resin sheet.

Background technique

Resin sheets are generally produced by extrusion molding, and there are resin sheets that are continuously extruded by an extruder that performs extrusion molding and then cut into a predetermined length to become products, and holding tapes. The resin sheet is rolled up in its original state and undergoes processing such as printing on the surface in subsequent processes to become a product. In the production process of the latter product, at least one sheet winding device is provided that winds the sheet supplied from the upstream side around a drum installed on the outer periphery of the winding shaft. Moreover, as the sheet winding device, a type that has two winding shafts and reels respectively attached to the two winding shafts integrated with a winding position for winding the sheet is often used. A turret-type sheet winding device that can be switched between the turret mechanism and the exchange position for roll exchange, and can continuously wind up sheets without stopping the production line for roll exchange.

There are some rotary table-type sheet winding devices as described above that operate the turntable mechanism at the time when the winding shaft at the winding position winds up a predetermined amount of sheets. The winding shaft is transported to the exchange position, and the winding shaft with the new roll installed at the exchange position is transported to the winding position to enter the winding preparation state. After cutting the sheet near the winding position, use The winding unit brings the upstream cut end of the sheet into close contact with the reel at the winding position, and rotates the winding shaft at the winding position integrally with the reel, thereby winding the sheet around the reel ( For example, refer to Patent Documents 1 and 2.).

However, the sheet winding devices proposed in Patent Documents 1 and 2 have significant restrictions on the arrangement of the components. Each component of the winding unit can only be installed above and above the sheet transfer position. Either of the following. Therefore, when a continuously supplied sheet is divided and wound on a plurality of rolls, for example, in the middle of the sheet production process, the temporarily wound sheet is rewound on a plurality of rolls for printing processing or the like. In the case of drums, 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 reversed before and after rewinding) cannot be switched between the drums. In this case, if you want to switch between the forward and reverse winding between the rolls, you need to stop the production line and reverse the installation direction of the roll on the side of the sheet unwinding device.

In response to this, the applicant has developed a sheet winding device (Japanese Patent Application No. 2018-71384) with a structure in which a pair of upper and lower winding units are used as the winding unit in contact with or away from the winding position. The winding unit of the guide mechanism brings each guide mechanism of the winding unit close to the roll in the winding position in the winding preparation state, and uses one of the guide mechanisms to press the sheet against the roll, and the guide mechanism is on the downstream side of the guide mechanism. position to cut the sheet, pull the cut end of the upstream side of the sheet back to the winding position, and rotate the winding shaft and the drum integrally at the winding position, thereby feeding the cut end of the sheet to the other side Between the guide mechanism and the drum.

According to the above-described structure, when a continuously supplied sheet is divided and wound on a plurality of rolls, the winding position and the exchange position of the two winding shafts to which the rolls are mounted can be performed by appropriately selecting By changing the working direction of the turntable mechanism, you can easily switch between forward and reverse winding between reels.

Patent document 1: Japanese Patent Application Publication No. 8-268605

Patent Document 2: Japanese Patent Application Publication No. 2016-3113

However, in the production process of resin sheets, when the material of the produced sheet is relatively hard and thick, the sheet rolled up by the sheet winding device has a strong winding inertia. When the roll on which the sheet is wound is installed in the sheet unwinding device of the subsequent process and the processing of the subsequent process is started, problems may occur due to the winding inertia of the sheet. Therefore, in order to reduce the winding inertia generated by the sheet in the sheet winding device, depending on the type of sheet, it is required to increase the outer diameter of the roll compared to the conventional method.

However, in a general sheet winding device, if the roll used is to be switched to a roll with a different outer diameter, it is necessary to change the overall layout of the winding unit provided to surround the roll. Loading and unloading of each component of the unit, etc., greatly reduces the production line operation rate and generates a large workload. This problem is also the same in the sheet unwinding device described in the above-mentioned Japanese Patent Application No. 2018-71384.

Contents of the invention

Therefore, an object of the present invention is to provide a sheet winding device that can easily cope with changes in the outer diameter of a roll for winding sheets.

In order to solve the above-mentioned problems, the present invention adopts a structure in which a sheet winding device is provided with a turntable mechanism that moves two winding shafts on which reels for winding sheets are mounted. switching between the winding position where the sheet is wound and the exchange position where the roll is exchanged; a cutting knife that sends the winding shaft on which the sheet has been wound up to the exchange position in the above-mentioned turntable mechanism, and In a winding preparation state in which the winding shaft after the roll exchange has been completed is sent to the winding position, the sheet is cut at a position downstream of the winding position; and a winding unit having a position relative to the winding position. A pair of upper and lower guide mechanisms that contact or separate the reel at the above-mentioned winding position,

In the above-mentioned winding preparation state, each guide mechanism of the above-mentioned winding unit is brought close to the reel in the winding position, one of the guide mechanisms is used to press the sheet against the reel, the above-mentioned cutting blade is used to cut the sheet, and the above-mentioned sheet is The cut end of the upstream side is pulled back to the winding position, and the winding shaft of the winding position is rotated integrally with the reel, thereby feeding the cut end of the sheet into another guide mechanism and the reel. During the period, the sheet is wound on the drum,

The above-mentioned sheet winding device is characterized in that:

The guide mechanism is a mechanism that winds a guide belt around a pair of support rollers having axes parallel to the sheet width direction. When the guide mechanism approaches the roll at the winding position, the pair of support rollers rotate relative to the winding roll. The axis center of the reel in the winding position is located on the upstream side and the downstream side, and the above-mentioned guide tape is pressed against the outer periphery of the reel in the winding position.

The sheet winding device is provided with: a support roller position adjustment mechanism that adjusts the position of the support roller when the guide mechanism is brought close to the roll in the winding position; and a tension adjustment mechanism that adjusts the tension The mechanism adjusts the tension of the above-mentioned guide belt.

According to the above structure, when the used reel is switched to a reel with a different outer diameter, it is possible to start using the new reel without performing mounting and detaching operations of the respective components of the winding unit simply by performing the following operations. In the winding operation of the reel, that is, the support roller position adjustment mechanism is operated, the position of the support roller, which is a component of the winding unit, is changed in accordance with the new outer diameter of the reel, and the tension adjustment mechanism is operated to adjust the position of the support roller. Adjust the tension of the guide belt after changing the position of the support roller so that it becomes an appropriate value.

As the support roller position adjustment mechanism, a pair of supports that rotatably support each of the support rollers can be adopted so as to be slidable in the sheet transfer direction. , on both sides of the sheet width direction, one of the pair of supports is coupled with a right-hand thread to a screw extending in the sheet transfer direction, and the other is coupled with a left-hand screw to the screw to rotate the screw, This causes the pair of support bodies and the support rollers respectively supported by the pair of support bodies to integrally move in opposite directions to each other along the sheet transfer direction. In this case, if the support body of the support roller position adjustment mechanism has: a threaded connection portion that is coupled with a right-hand thread or a left-hand thread with the above-mentioned screw; and a rotating portion that can rotate in the vertical plane. The support roller is supported in a state of being internally rotated on the threaded joint; and an auxiliary operating part rotates the rotating part so that the support body and the support roller can be moved integrally by the rotation of the screw. Finally, the position of the support roller can be easily fine-tuned by operating the auxiliary operating part of the support body.

In addition, the above-mentioned tension adjustment mechanism may be provided with at least one tension roller having an axis parallel to the sheet width direction, and winding the above-mentioned guide belt together with the above-mentioned support roller, and the above-mentioned tension adjustment mechanism allows the The above-mentioned tension roller moves in the direction in which the tension of the guide belt changes. Specifically, for example, the structure may be such that at least one of the tension rollers is supported by a tension roller handle, and the tension roller handle is fixed to a tension roller rotation shaft having an axis parallel to the sheet width direction. , the above-mentioned sheet winding device is provided with a tension roller operating part that rotates the above-mentioned tension roller rotation shaft.

Furthermore, if the following mechanism is used, the cut end of the sheet can be wound around the roll more smoothly without being affected by the outer diameter of the roll. That is, the above-mentioned support roller is provided between the pair of support rollers. A squeeze roller that guides the tape to press against the outer periphery of the roll in a winding position, and a squeeze roller position adjustment mechanism that adjusts the position of the squeeze roller.

As described above, the sheet winding device of the present invention rolls the sheet while the pair of upper and lower guide mechanisms of the winding unit respectively press the guide tapes wound around the pair of support rollers against the outer periphery of the roll at the winding position. The cut end of the material is wound around this roll, and when the roll used is switched to a roll with a different outer diameter, the position of the support roller is changed and guided only by operating the support roller position adjustment mechanism and the tension adjustment mechanism. The winding operation can be started by adjusting the belt tension. Therefore, compared with conventional sheet winding devices that require loading and unloading of each component of the winding unit, the operation rate of the production line can be greatly improved and the workload can be reduced. Significantly reduced.

Description of the drawings

FIG. 1 is a front view of the sheet winding device according to the 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 sectional front view of the main part of FIG. 3 (with the guide mechanism closed).

FIG. 5 is an enlarged plan view of the main part of FIG. 3 .

FIG. 6 is a cross-sectional view along line VI-VI in FIG. 5 .

7(a) to 7(c) are explanatory diagrams of the sheet winding sequence during winding.

FIG. 8 is a longitudinal sectional front view showing a state in which the arrangement of components of the guide mechanism is changed corresponding to FIG. 4 .

Explanation of reference signs

1...base; 2...bracket (fixed part); 3...traction roller; 4...winding unit; 5...turntable mechanism; 11...support frame; 12...turntable rotation axis; 13...turntable arm; 14...winding shaft ; 15...reel; 20a, 20b...guide mechanism; 24...cutting knife; 25...winding arm; 27...support roller; 28...tension roller; 29...squeeze roller; 30...guide belt; 31...support body ; 32...Threaded joint part; 33...Rotating part; 34...Cylinder for support roller (auxiliary operating part); 37...Slide plate; 40...Support roller handle; 41...Screw; 50...Cylinder for tension roller; 52...Extrusion Cylinder for roller; S...sheet.

Detailed ways

Hereinafter, embodiments of the present invention will be described based on the drawings. This sheet winding device is installed in a resin sheet production line. As shown in Figure 1, it is equipped with a rectangular plate-shaped base 1 fixed to the floor surface F, and is erected in the sheet transfer direction (the direction of the arrow in Figure 1). A bracket (fixing member) 2 erected on the upper surface of the base 1 on the upstream side, an upper and lower pulling roller 3 and a winding unit 4 installed on the bracket 2, and a bracket (fixing member) 2 installed on the base 1 on the downstream side in the sheet transfer direction. The upper surface of the turntable mechanism 5.

The above-mentioned holder 2 is composed of a main holder 2a provided so as to sandwich the transfer position of the sheet S in plan view, and an auxiliary holder 2b provided inside the main stand 2a. A cylinder 6 is attached to the upper end of the main frame 2a so as to telescope in the up-down direction and rotatably support the end of the upper traction roller 3 with a rod. In addition, the main frame 2 a is rotatably provided with guide rollers 7 and 7 that guide the strip-shaped sheet S supplied from the upstream side sheet unwinding device (not shown) between the upper and lower pulling rollers 3 , 3 . and guide rollers 8 , 9 , 10 that guide the sheet S coming out from between the upper and lower pulling rollers 3 toward the turntable mechanism 5 .

Here, as described above, the upper traction roller 3 supports both ends of the cylinder 6 so as to be able to move up and down. On the other hand, the lower traction roller 3 is connected to a motor whose one end is not shown in the figure, with both ends rotatably supported by the main bracket 2a. Then, while operating the cylinder 6 and adjusting the vertical position of the upper pulling roller 3 in accordance with the thickness of the sheet S, the lower pulling roller 3 is rotationally driven, thereby pulling the upper and lower pulling rollers 3 The sheet S supplied from the upstream side is conveyed toward the downstream side.

As shown in FIGS. 1 and 2 , the turntable mechanism 5 includes a support frame 11 , a turntable rotation shaft 12 with both ends rotatably supported by the support frame 11 , and both ends fixed to the turntable rotation shaft 12 . Close to the center and fixed at a position that does not interfere with the sheet S, the turntable arm 13 extending in the diameter direction from the center of the turntable rotation shaft 12 and one end of the turntable arm 13 on both sides are between each other and the other end. The two winding shafts 14 are rotatably and detachably mounted to each other. Furthermore, a paper roll (paper tube) 15 on which the sheet S is wound is attached to the outer periphery of the take-up shaft 14 .

The above-mentioned turntable rotation shaft 12 is rotationally driven by a first motor 16 provided on 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 take-up shaft 14 is rotationally driven by a second motor 17 provided at the lower portion of both sides of the support frame 11 and connected to one end portion of each take-up shaft 14 via a rotation transmission mechanism. In addition, two roller support portions 18 protruding toward both radial sides of the turntable rotation shaft 12 are provided at the center of each turntable arm 13 , and the guide roller 19 is rotatably supported by these roller support portions 18 .

Furthermore, the first motor 16 drives the turntable rotation shaft 12 to rotate the turntable arm 13 180° around the turntable rotation shaft 12, thereby positioning the two winding shafts 14 at the winding position for winding the sheet S. The drum 15 is exchanged between exchanged positions.

As shown in FIG. 1 , the above-mentioned winding unit 4 is composed of a pair of upper and lower guide mechanisms 20a and 20b, a first winding cylinder 21a connecting the upper guide mechanism 20a and the main frame 2a, and a lower guide mechanism 20b and the main frame 2a. The second winding cylinder 21b is connected to the auxiliary bracket 2b. Furthermore, a guide roller 22 and a sheet clamp 23 composed of two belt-shaped members and extending in the sheet width direction are provided at the front ends of each of the guide mechanisms 20a and 20b. A cutting blade 24 (see FIG. 3 ) that moves in the sheet width direction is provided between the two strip-shaped members of the material clamping plate 23 .

Each of the guide mechanisms 20a and 20b has a winding arm 25 that is rotatably attached to both ends of the small diameter portion of the guide roller 10 at the downstream end of the main frame 2a. Furthermore, the connecting arm 26 protruding from each winding arm 25 of the upper guide mechanism 20a is rotatably connected to the rod portion of the first winding cylinder 21a. is installed on the main bracket 2a, and each winding arm 25 of the lower guide mechanism 20b is rotatably connected to the rod portion of the second winding cylinder 21b, and the rod portion of the second winding cylinder 21b is rotatably connected. installed on the auxiliary bracket 2b. Therefore, when the first winding cylinder 21a and the second winding cylinder 21b are expanded and contracted, each of the guide mechanisms 20a and 20b rotates around the axis of the guide roller 10 at the most downstream side of the main frame 2a, and the winding position is adjusted relative to the winding position. The drum 15 contacts or separates, and the guide roller 22, the sheet nip 23, and the cutting blade 24 contact or separate the sheet S on the downstream side of the winding position. In addition, a notch 25a is provided in the longitudinal center of each winding arm 25 to avoid interference with the end of the winding shaft 14 (see FIG. 3 ).

In addition, as shown in FIGS. 3 and 4 , a pair of support rollers 27 , a pair of tension rollers 28 , and a pair of support rollers 27 are provided between the winding arms 25 on both sides of the guide mechanisms 20 a and 20 b in parallel with the sheet width direction. There is one squeeze roller 29, and a guide belt 30 made of elastic rubber or the like is wound around each pair of the support roller 24 and the tension roller 28. Furthermore, when each guide mechanism 20a, 20b approaches the reel 15 in the winding position, the pair of support rollers 27 is located on the upstream side and the downstream side with respect to the axis center of the reel 15, and the squeeze roller 29 is located on the axis of the reel 15. Above or below the center, the guide belt 30 is pressed against the outer periphery of the drum 15 by the support rollers 27 and the squeeze roller 29 between the support rollers 27 .

In addition, each of the guide mechanisms 20a and 20b is provided with a support roller position adjustment mechanism for adjusting the position of the support roller 27 when the reel 15 is close to the winding position, a tension adjustment mechanism for adjusting the tension of the guide belt 30, and Squeeze roller position adjustment mechanism.

As shown in FIGS. 4 to 6 , the support roller position adjustment mechanism supports each support roller 27 in a rotatable manner and is slidably held by the winding arms 25 on both sides in the sheet transfer direction. A pair of support bodies 31 at the front and rear (in the sheet transfer direction) and on both sides in the sheet width direction extend in the sheet transfer direction, and are coupled to one of the pair of supports 31 with a right-hand thread and the other with a left-hand thread. A pair of screws 41 on the left and right (in the sheet width direction).

The pair of front and rear support bodies 31 has a pair of left and right threaded coupling portions 32 that are coupled with right-hand threads or left-hand threads to the screw 41 respectively. The pair of left and right threaded coupling portions 32 are mounted in a state of being rotatable in the vertical plane. The rotation part 33 that supports the support roller 27 and the support roller cylinder 34 as a pair of left and right auxiliary operating parts that rotate the rotation part 33 are provided.

The left and right threaded joints 32 are respectively composed of a threaded block 35 passing through the screw rod 41 and three sliding slides that are slidably engaged with the guide rail 25b (omitted in FIG. 4 ) installed on the inner side of the winding arm 25 . It consists of a block 36 and a slide plate 37 for fixing the threaded block 35 and each slide block 36. The rotating part 33 consists of a support roller rotating shaft 38 with both ends rotatably supported by the slide plate 37, a rectangular plate-shaped rotating plate 39 extending in the sheet width direction and attached to the outer periphery of the supporting roller rotating shaft 38. The support roller handle 40 is attached to both left and right sides of the rotating plate 39 and rotatably supports the end of the support roller 27 . Furthermore, the main body portion of the left and right support roller cylinders 34 is rotatably supported by the mounting plate 37a constituting a part of the slide plate 37, and the rod tip portion is rotatably connected to the support roller handle 40.

On the other hand, both ends of the pair of left and right screws 41 are rotatably supported by the winding arm 25, and a bevel gear 42 is fixed to one end thereof. Furthermore, the operation-side bevel gear 43 meshing 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. This gear shaft 44 has both ends rotatably supported by the left and right winding arms 25 , and a hexagonal threaded operating piece 45 is attached to a protruding portion protruding from one of the winding arms 25 .

Therefore, by using an appropriate tool or the like, the threaded operating piece 45 is grasped and the gear shaft 44 and the left and right operating side bevel gears 43 are integrally rotated, thereby rotating the pair of left and right screws 41 and causing the front and rear screws threadedly coupled to each screw 41 to rotate. The support body 31 and the support rollers 27 respectively supported by the support body 31 move in opposite directions to each other along the sheet transfer direction as a whole.

Furthermore, the support roller cylinder 34 can be operated to integrally rotate the support roller handle 40 , the rotating plate 39 , the support roller rotation shaft 38 , and the support roller 27 around the axis of the support roller rotation shaft 38 , thereby fine-tuning the position of the support roller 27 .

In addition, the above-mentioned tension adjustment mechanism moves the tension roller 28 on the upstream side in the direction in which the tension of the guide belt 30 (omitted in FIGS. 5 and 6 ) changes, and has an axis parallel to the sheet width direction. Both ends are rotatably supported by the tension roller rotation shaft 46 of the left and right winding arms 25. The left and right pair are fixed to the tension roller rotation shaft 46 and rotatably support the upstream side tension roller 28. The tension roller handle 47 and the tension roller operating part 48 rotate the tension roller rotation shaft 46. The tension roller operating part 48 is composed of an operating side handle 49 fixed to a protrusion of the tension roller rotation shaft 46 protruding from the winding arm 25 and a tension roller cylinder 50 whose main body part is The rod is rotatably supported by the winding arm 25, and the front end of the rod is rotatably connected to the operating side handle 49. In addition, both ends of the downstream tension roller 28 are rotatably supported by the left and right winding arms 25 .

Therefore, by operating the tension roller cylinder 50 , the operation side handle 49 , the tension roller rotation shaft 46 , the tension roller handle 47 and the upstream side tension roller 28 can be integrated around the axis of the tension roller rotation shaft 46 Turn to adjust the tension of the guide belt 30.

The above-mentioned squeeze roller position adjustment mechanism supports the squeeze roller 29 in a rotatable manner, and is held by the winding arms 25 on both sides so as to be slidable left and right in a direction orthogonal to the sheet transfer direction in the vertical plane. It is composed of a pair of sliding pieces 51 and a squeeze roller cylinder 52 . The main body of the squeeze roller cylinder 52 is fixed to the winding arm 25 , and the rod tip is connected to the sliding piece 51 .

Therefore, by operating the squeeze roller cylinder 52, the sliding piece 51 and the squeeze roller 29 slide integrally, and the position of the squeeze roller 29 can be adjusted.

Next, the sheet winding operation performed on the reel 15 at the winding position in the sheet winding device will be described. When the sheet S supplied from the upstream side is wound from the upper surface side of the roll 15 (hereinafter referred to as "winding up"), first, as shown in FIG. 1 , the winding unit 4 is guided up and down. The mechanisms 20a and 20b are opened (away from the roll 15 at the winding position), and the winding shaft 14 with the new roll 15 installed at the exchange position is conveyed to the winding position, and the sheet S is prepared in a winding preparation state. Pass over this new drum 15 .

Then, the first winding cylinder 21a and the second winding cylinder 21b are operated to rotate the vertical guide mechanisms 20a and 20b, and as shown in FIG. 4, the vertical guide mechanisms 20a and 20b are in a closed state (close to the winding position). status of reel 15).

At this time, as shown in FIG. 7(a) , for each guide mechanism 20a and 20b, the pair of support rollers 27 is located on the upstream side and the downstream side with respect to the axis center of the drum 15, and the squeeze roller 29 is located on the drum 15. 15 plus or minus. Furthermore, as for the upper guide mechanism 20a, its pair of support rollers 27 and squeeze rollers 29 press (closely adhere to) the guide belt 30 and the sheet S to the upper surface side of the roll 15, and the lower guide mechanism The pair of support rollers 27 and the squeeze roller 29 of 20b press only the guide belt 30 against the lower surface side of the drum 15. In addition, although illustration is omitted, the upper and lower guide rollers 22 , the sheet clamp 23 and the cutting blade 24 are close to the sheet S in the vicinity of the turntable rotation shaft 12 .

From the state of FIG. 7( a ) described above, the upper and lower sheet clamps 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 to pull back the sheet S until the upstream cut end of the sheet S reaches the winding position. Furthermore, the second motor 17 (refer to FIG. 1 ) connected to the winding shaft 14 in the winding position is driven, thereby causing the winding shaft 14 to rotate integrally with the reel 15 as shown in FIG. 7( c ) (FIG. (left-hand rotation), the upstream cut end of the sheet S is sent between the guide belt 30 of the lower guide mechanism 20b and the drum 15, and is further sent into the guide belt 30 of the upper guide mechanism 20a. Between the roll 15 and the roll 15 , the sheet S is wound around the roll 15 .

Thereafter, when the winding amount of the sheet S on the roll 15 reaches a predetermined amount, the vertical guide mechanisms 20 a and 20 b are opened so as not to interfere with the sheet S wound on the roll 15 . When the take-up shaft 14 in the take-up position has taken up a predetermined amount of the sheet S, the turntable arm 13 of the turntable mechanism 5 is rotated 180° to take up the two take-up shafts 14. The position and the exchange position are exchanged to enter the winding preparation state. The reel 15 on which the sheet S is wound is removed from the reel 14 sent to the exchange position, and a new reel is installed on the reel 14. 15.

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

In addition, although illustration is omitted, when the sheet S supplied from the upstream side is wound from the lower surface side of the roll 15 (hereinafter referred to as "downwinding"), the sequence is also the same as the above-mentioned upper surface side. The situation is much the same for volumes. That is, first, after the sheet S passes under the roll 15 in the 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 then the sheet S is cut. The cutter 24 cuts the sheet S. Then, the pulling roller 3 is reversed to pull the sheet S back until its upstream cut end reaches the winding position, and the winding shaft 14 and the drum 15 at the winding position are rotated integrally (same as in the case of winding). (in reverse direction), the sheet S is wound around the drum 15 .

Thereafter, it suffices to open the vertical guide mechanisms 20a and 20b when the amount of winding of the sheet S onto the roll 15 reaches a predetermined amount, and the winding shaft 14 at the winding position winds up the predetermined amount. When the amount of sheet S is measured, the turret arm 13 of the turret mechanism 5 performs a 180° down-winding rotation, and the positions of the two winding shafts 14 are exchanged to enter the winding preparation state. For the winding shaft that has been sent to the exchange position, 14 Carry out the exchange of reel 15.

Furthermore, in this sheet winding device, the sheet winding operation is performed as described above, so it is possible to divide and wind the sheet S continuously supplied from the upstream side into a plurality of rolls 15 Next, the rotation direction of the turntable arm 13 (the working direction of the turntable mechanism 5) when the two winding shafts 14 are exchanged between the winding position and the exchange position is appropriately selected to continue the same winding between the reels 15. mode, switch between forward and reverse rolls.

That is, in the case of winding, if the turntable arm 13 is rotated so that the rolled sheet S passes above the turntable rotation shaft 12 (left rotation in FIG. 1 ), a new roll 15 is installed. The winding shaft 14 is sent to the winding position from below, and the sheet S passes above the new roll 15, so the same winding method is continued. On the other hand, if the turntable arm 13 is rotated in the opposite direction (right rotation in FIG. 1 ), the sheet S will pass under the new roll 15 , so that the forward winding and the reverse winding can be switched (from the forward winding to the reverse winding). Winding to reverse winding, or changing the winding method from reverse winding to forward winding). In addition, in the case of unwinding, if the turret arm 13 is rotated so that the rolled sheet S passes above the turret rotation shaft 12, forward and reverse winding can be switched. If the turret arm 13 is rotated in the opposite direction, If the ground rotates, the same coiling method can be continued.

In addition, in this sheet winding device, when the roll 15 used is switched to a roll having a different outer diameter, the support roller position adjustment mechanism and the pressing mechanism of the vertical guide mechanisms 20a and 20b are used in the winding preparation state. The roller position adjustment mechanism operates to move the support roller 27 and the squeeze roller 29 in accordance with the new outer diameter of the drum 15, and the tension adjustment mechanism operates to adjust the tension of the guide belt 30 to an appropriate size, thereby also enabling The winding operation using the new drum 15 is started without performing attachment and detachment operations of the respective components of the winding unit 4 .

For example, taking the drum 15 shown in FIG. 4 as a reference, FIG. 8 shows a state at the start of winding when a drum 15 larger than its outer diameter is used. In the state of FIG. 8 , starting from the state of FIG. 4 , the threaded operating piece 45 of the support roller position adjustment mechanism is operated to rotate the screw 41 , thereby causing the upstream and downstream support rollers 27 and their supports 31 to move away from each other integrally. direction, and on this basis, operate the support roller cylinder 34 to finely adjust the position of each support roller 27, and operate the squeeze roller cylinder 52 of the squeeze roller position adjustment mechanism to move the squeeze roller 29 away from the two support rollers 27 direction, and operates the tension roller cylinder 50 of the tension adjustment mechanism to rotate the upstream tension roller 28 to adjust the tension of the guide belt 30 .

In this sheet winding device, when switching the outer diameter of the roll 15 as described above, it can be easily handled by operating the support roller position adjustment mechanism, the squeeze roller position adjustment mechanism, and the tension adjustment mechanism. Therefore, compared with conventional sheet winding devices that require loading and unloading of each component of the winding unit, the operation rate of the production line can be greatly improved, and the workload can be significantly reduced.

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

Claims (5)

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.