Sheet winding machine

Abstract

The sheet winding machine comprises a material storage device, a slitting device, a traction cutting device, a winding device and a coil unloading device which are sequentially arranged from front to back, and a sheet sequentially penetrates through the material storage device, the slitting device, the traction cutting device and the winding device; the slitting device is used for slitting the sheet into a plurality of strips; the traction cutting device comprises a pair of traction rollers which are oppositely arranged up and down, a cutting mechanism used for cutting off the sheet in the left-right direction and a transition roller arranged on the rear side of the cutting mechanism. The rolling device comprises a rack, a rotating frame rotationally arranged on the rack and a pair of rolling shafts rotationally arranged on the rotating frame around the axis of the rolling shaft, the rolling device is provided with a rolling station close to the traction cutting device and a roll unloading station arranged on the rear side of the rolling station, and the pair of rolling shafts alternately rotate to the rolling station to roll a plurality of sheets; the winding device is suitable for winding wide SGP film sheets, the sheets are cut on line, multiple rolls of sheets can be wound at the same time through one winding shaft, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sheet material production equipment, and in particular to a sheet material winding machine. Background Art

[0002] At present, the traditional SGP winder has a product width of 2100-3600mm and does not have an online slitting function. It is inconvenient to wind up a wide width of 4500mm, and it can only wind up a single roll at a time, and cannot wind up multiple rolls on one axis. Summary of the invention

[0003] In order to solve the above-mentioned technical problems, the purpose of the present application is to provide a sheet winding machine capable of winding multiple rolls on one shaft.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a sheet winding machine, comprising: a storage device, a slitting device, a traction and cutting device, a winding device and an unwinding device arranged in sequence from front to back, and the sheet passes through the storage device, the slitting device, the traction and cutting device and the winding device in sequence; the storage device comprises a frame and a plurality of mutually parallel floating rollers rotatably arranged on the frame, the plurality of floating rollers are arranged alternately up and down from front to back, and each of the floating rollers can move in the up and down direction; the slitting device comprises at least one slitting knife for slitting the sheet into multiple strips, and each of the slitting knives is configured to be able to move in the left and right direction to adjust the width of the slitting sheet; the traction and cutting device comprises a pair of traction rollers arranged opposite to each other up and down, a cutting device for cutting the sheet in the left and right direction The invention relates to a method for producing a roll-type sheet of sheet metal having a first rolling element and a second rolling element for producing a roll-type ...

[0005] In the above technical solution, it is further preferred that the storage device also includes a plurality of floating fixed plates and a chain drive synchronization mechanism, each of the floating rollers is equipped with a floating fixed plate, each of the floating rollers can be rotatably installed around its own axis on the corresponding floating fixed plate, and the chain drive synchronization mechanism is transmission-connected to the plurality of floating fixed plates to drive each of the floating fixed plates to move in the up and down directions.

[0006] In the above technical solution, it is further preferred that at least one of the slitting knives is a rolling knife, each of the slitting knives has an axis extending in the left and right directions and can rotate around its own axis, and the blade of each of the slitting knives is arranged around the axis of each of the slitting knives.

[0007] In the above technical solution, it is further preferred that the slitting device also includes a transition aluminum roller extending in the left-right direction, the transition aluminum roller is arranged on the lower side of the at least one slitting knife, and the outer surface of the transition aluminum roller is tangent to the blade of the at least one slitting knife.

[0008] In the above technical solution, it is further preferred that the cutting mechanism includes a table top and a cross-cutting knife capable of passing through the table top, the table top is arranged extending in the left-right direction at the lower side of the moving path of the sheet conveyed between the pair of traction rollers and the transition roller, and a cutting groove for the cross-cutting knife to pass through is provided on the table top; the cutting groove extends in the left-right direction so that the cross-cutting knife can move back and forth in the left-right direction relative to the table top.

[0009] In the above technical solution, it is further preferred that the cutting mechanism also includes a clamping assembly arranged on the upper side of the table top, the clamping assembly includes a clamping block movable in the up and down directions and a clamping cylinder connected to the clamping block, the clamping cylinder can drive the clamping block to press the sheet against the upper surface of the table top, and a groove is provided at the bottom of the clamping block to accommodate the passage of the cross-cutting knife, the groove extends in the left and right directions, and the groove is arranged opposite to the cutting groove in the upper and lower directions.

[0010] In the above technical solution, it is further preferred that the cross-cutting knife is transmission-connected with a transverse shifting assembly, the transverse shifting assembly includes a transverse shifting motor, a driving sprocket, a driven sprocket and a chain connected between the driving sprocket and the driven sprocket, the driving sprocket is transmission-connected with the transverse shifting motor, the driven sprocket is arranged opposite to the driving sprocket on the left and right, and the cross-cutting knife is connected with the chain.

[0011] In the above technical solution, it is further preferred that the winding device also includes a rotating motor and a pair of winding motors, the rotating motor is transmission-connected between the frame and the rotating frame to drive the rotating frame to rotate relative to the frame, the pair of winding motors are arranged on the rotating frame and are transmission-connected to the pair of winding shafts respectively, and each winding motor is used to drive the corresponding winding shaft to rotate around its own axis.

[0012] In the above technical solution, it is further preferred that the unloading device includes a lifting seat slidably arranged on the swing arm, a lifting hydraulic cylinder driving the lifting seat to slide, and a swing hydraulic cylinder driving the swing arm to switch between the first position and the second position, one end of the swing arm is hinged to the frame, the lifting seat is slidably arranged at the other end of the swing arm, and slides upward when the swing arm is in the first position to lift the winding shaft of the unloading station.

[0013] In the above technical solution, it is further preferred that the winding device also includes a winding station, which is located on the upper side of the winding station, and in the front-to-back direction, the distance between the winding station and the winding station is smaller than the distance between the winding station and the unwinding station; when one of the winding shafts is located at the winding station, the other winding shaft is located at the lower side of the unwinding station.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present application is suitable for the winding of wide-width SGP sheets, performs online slitting of the sheets, and enables a winding shaft to simultaneously wind multiple rolls of sheets, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a sheet winding machine provided in an embodiment of the present application;

[0017] Figure 2 for Figure 1 A front view of the slitting device in FIG.

[0018] Figure 3 for Figure 1 A side view of a slitting device in FIG.

[0019] Figure 4 for Figure 1 A top view of the traction and cutting device in FIG.

[0020] Figure 5 For along Figure 4 The cross-sectional view cut along the AA line in the figure;

[0021] Figure 6 for Figure 1 A front view of the winding device in FIG.

[0022] Figure 7 for Figure 6 A side view of the winding device in FIG.

[0023] Figure 8 For along Figure 7 The cross-sectional view cut along the BB line in FIG.

[0024] Fig. 9 for Figure 8 Schematic diagram of the position of the reeling shaft of the middle reeling station rotating to the upper reeling station.

[0025] Among them: 100, sheet winding machine; 10, storage device; 1, frame; 2, floating roller; 20, slitting device; 3, slitting knife; 4, transition aluminum roller; 5, screw adjustment assembly; 30, traction cutting device; 6, traction roller; 7, cutting mechanism; 71, table; 710, cutting groove; 72, cross-cutting knife; 73, transverse movement assembly; 731, transverse movement motor; 732, driving sprocket; 733, driven sprocket; 734, chain Strip; 74, clamping assembly; 741, clamping block; 740, groove; 742, clamping cylinder; 8, transition roller; 40, winding device; 9, frame; 91, winding station; 92, unwinding station; 93, winding station; 11, rotating frame; 12, winding shaft; 13, rotating motor; 14, winding motor; 50, unwinding device; 15, swing arm; 16, lifting seat; 17, swing hydraulic cylinder; 18, lifting hydraulic cylinder. DETAILED DESCRIPTION

[0026] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0027] The terms “front”, “back”, “upper” and “lower” in this application refer to the attached Figure 1 Front, back, top and bottom shown.

[0028] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0029] The embodiment of the present application provides a sheet winding machine, which is particularly suitable for winding SGP sheets. Figure 1 As shown, the sheet winding machine 100 includes a storage device 10, a slitting device 20, a traction and cutting device 30, a winding device 40 and an unwinding device 50 which are arranged in sequence from front to back, and the sheet passes through the storage device 10, the slitting device 20, the traction and cutting device 30 and the winding device 40 in sequence from upstream to downstream.

[0030] The storage device 10 includes a frame 1 and a plurality of floating rollers 2 rotatably arranged on the frame 1 and parallel to each other. The plurality of floating rollers 2 are alternately arranged from front to back and up and down. Each floating roller 2 is rotatably arranged on a floating fixed plate around its own axis. Each floating fixed plate is movably arranged on the frame 1 in the up and down directions through a chain drive synchronization mechanism. Each floating roller 2 is in frictional contact with the sheet material, that is, the floating roller 2 is passively rotated under the action of the friction force with the sheet material during the movement of the sheet material, and the linear speeds of the plurality of floating rollers 2 are consistent. When the upper floating roller 2 moves downward and the lower floating roller 2 moves upward, the sheet material stored in the storage device 10 is released to the downstream slitting device 20. Some of the floating rollers 2 move upward and the other part of the floating rollers 2 move downward, thereby increasing the length of the conveying path of the sheet material in the storage device 10, thereby achieving the purpose of temporarily storing the sheet material in the storage device 10, so as to facilitate the downstream winding device 40 to perform the roll changing operation.

[0031] like Figure 2 , 3As shown, the slitting device 20 is used to slit the sheet conveyed by the storage device 10 into multiple sheets, so that the sheet winding machine of the present application can wind up sheets of various specifications at one time, thereby improving production efficiency. The slitting device 20 includes a pair of slitting knives 3 arranged opposite to each other on the left and right, a transition aluminum roller 4 extending in the left and right directions, and a screw adjustment assembly 5. One slitting knife 3 is equipped with a screw adjustment assembly 5, so that it can move in the left and right directions under the drive of the screw adjustment assembly 5 to adjust the width of the slitting sheet. The slitting knife 3 is a hob-type cutter, which has an axis extending in the left and right directions, and can rotate around its own axis relative to the screw adjustment assembly 5. The blade of the slitting knife 3 is arranged around its own axis. When the slitting knife 3 rotates around its own axis, the sheet moving in the front-to-back direction can be cut into two left and right strips. The transition aluminum roller 4 is arranged below the slitting knife 3, and the outer surface of the transition aluminum roller 4 is tangent to the blade of the slitting knife 3; on the one hand, the transition aluminum roller 4 is used to support the sheet conveyed by the slitting device 20, and on the other hand, it cooperates with the slitting knife 3 to facilitate the slitting knife 3 to slitting the sheet.

[0032] like Figure 4 , 5 As shown, the traction and cutting device 30 is used to slit the slitting device 20 into multiple strips and convey them to the winding device 40, and when the winding device 40 changes the roll, multiple strips of sheet material are cut to facilitate unloading of the full roll of sheet material. The traction and cutting device 30 includes a pair of traction rollers 6 arranged opposite to each other up and down, a cutting mechanism 7 for cutting the sheet material, and a transition roller 8 arranged at the rear side of the cutting mechanism 7. The lower traction roller 6 is connected to a traction motor and rotates under the drive of the traction motor to traction the sheet material; the upper traction roller 6 is connected to a cylinder and moves closer to and away from the lower traction roller 6 under the drive of the cylinder. The upper traction roller 6 presses the sheet material on the lower traction roller 6, and the pressed sheet material moves to the rear side when the lower traction roller 6 rotates. The transition roller 8 is downstream of the traction roller 6 and the cutting mechanism 7, and is used to guide the sheet material to the winding device 40.

[0033] The cutting mechanism 7 includes a table 71, a cross-cutting knife 72, a transverse shifting assembly 73 and a pressing assembly 74. The table 71 is arranged between a pair of traction rollers 6 and a transition roller 8 in a manner extending in the left-right direction, and the table 71 is located at the lower side of the moving path of the sheet conveyed between the pair of traction rollers 6 and the transition roller 8, and is used to support the sheet in the moving path; the table 71 is also provided with a cutting groove 710 for the cross-cutting knife 72 to pass through and for the cross-cutting knife 72 to move back and forth in the left-right direction, and the cutting groove 710 extends in the left-right direction. The cross-cutting knife 72 is in transmission connection with the transverse shifting assembly 73, so that it moves back and forth in the cutting groove 710 in the left-right direction under the drive of the transverse shifting assembly 73, and the cutting path of the cross-cutting knife 72 transversely passes through the moving path of the sheet on the traction and cutting device 30, so as to cut the sheet transversely. The transverse movement assembly 73 includes a transverse movement motor 731, a driving sprocket 732, a driven sprocket 733 and a chain 734 connected between the driving sprocket 732 and the driven sprocket 733. The driving sprocket 732 is connected to the transverse movement motor 731 in driving connection, and the driven sprocket 733 is arranged opposite to the driving sprocket 732 on the left and right, and rotates with the driving sprocket 732 through the transmission of the chain 734; the transverse cutting knife 72 is connected to the chain 734, and when the driving sprocket 732 rotates, the chain 734 drives the transverse cutting knife 72 to move in the left and right directions. The clamping assembly 74 is arranged on the upper side of the table 71. The clamping assembly 74 includes a clamping block 741 that can move in the up and down directions and a clamping cylinder 742 connected to the clamping block 741. A groove 740 for accommodating the cross-cutting knife 72 is provided at the bottom of the clamping block 741. The groove 740 extends in the left and right directions, and the groove 740 and the cutting groove 710 are arranged opposite to each other up and down; the clamping cylinder 742 can drive the clamping block 741 to press the sheet against the upper surface of the table 71, so as to limit the sheet when the cross-cutting knife 72 cuts the sheet.

[0034] like Figure 6-9 As shown, the winding device 40 includes a frame 9, a rotating frame 11, a pair of winding shafts 12, a rotating motor 13 and a pair of winding motors 14. The winding mechanism 40 also has a winding station 91 and an unwinding station 92 arranged opposite to each other. The winding station 91 is adjacent to the transition roller 8, and the unwinding station 92 is located at the rear side of the winding station 91. The rotating frame 11 is rotatably arranged on the frame 9, and the rotating motor 13 is connected to the rotating frame 11 to drive the rotating frame 11 to flip relative to the frame 9; a pair of winding shafts 12 are rotatably arranged on the rotating frame 11 around their own axis, and the pair of winding shafts 12 are alternately rotated to the winding station 91 under the flipping of the rotating frame 11 to simultaneously wind up multiple sheets transported upstream; a pair of winding motors 14 are arranged on the rotating frame 11, and are respectively connected to the pair of winding shafts 12 to drive the corresponding winding shafts 12 to rotate around their own axis. The pair of winding shafts 12 are both air-expanding shafts, which are inflated and expanded to clamp the reel for sheet winding, and deflated to create a gap between the winding shaft 12 and the inner wall of the reel, so that the reel and the sheet wound on the reel can be removed from the winding shaft 12.

[0035] Since the texture of the SGP sheet is relatively hard, manual assistance is required for rolling up. In order to facilitate manual operation, it is necessary to provide an operating space for the operator when the winding device 40 changes the roll. The winding device 40 also includes a winding-up station 93 located on the upper side of the winding station 91. The winding-up station 93 is located between the winding station 91 and the unwinding station 92, and is closer to the winding station 91. When the winding device 40 changes the roll, the rotating frame 11 flips a certain angle, so that the front winding shaft 12 rises to the winding-up station 93, and the rear winding shaft 12 descends to the lower side of the unwinding station 92. The winding shaft 12 staggered in the upper and lower directions is convenient for the operator to roll up the cut sheet on the winding shaft 12 of the winding-up station 93. After the rolling is completed and the operator exits the working range of the winding device 40, the rotating frame 11 rotates, so that the front winding shaft 12 descends to the winding station 91, and the rear winding shaft 12 rises to the unwinding station 92, and then the winding and unwinding operations are carried out smoothly.

[0036] The unloading device 50 is arranged on the frame 9 and is adjacent to the unloading station 92. The unloading device 50 includes a swing arm 15, a lifting seat 16, a swing hydraulic cylinder 17 and a lifting hydraulic cylinder 18; the lower end of the swing arm 15 is hinged on the frame 9, and the swing hydraulic cylinder 17 is connected between the swing arm 15 and the frame 9. The swing arm 15 has a first position directly below the reeling shaft 12 at the unloading station 92 and a second position to move the reeling shaft 12 at the unloading station 92 out of the unloading station 92 under the drive of the swing hydraulic cylinder 17.

[0037] The lifting hydraulic cylinder 18 is connected between the swing arm 15 and the lifting seat 16, and is used to drive the lifting seat 16 to move back and forth along the extension direction of the swing arm 15. When the swing arm 15 is in the first position, the lifting seat 16 moves in the up and down directions driven by the lifting hydraulic cylinder 18. When the lifting seat 16 moves upward, it can lift the winding shaft 12 and the sheet wound on the winding shaft 12 at the unwinding station 92. When the swing hydraulic cylinder 17 pushes the swing arm 15 to the second position, the lifting seat 16 at the winding shaft 12 is lifted and the winding shaft 12 is moved out of the unwinding station 92 as the swing arm 15 swings.

[0038] The working principle of the present application is as follows: the sheet is conveyed to the slitting device 20 under the traction of the floating roller 2 of the storage device 10, the sheet is divided into three sheets by a pair of slitting knives 3 at the slitting device 20, and is sent to the winding device 40 via a pair of traction rollers 6 of the traction and cutting device 30, the rotating frame 11 rotates the winding shaft of the empty roll to the winding station 93, the operator transfers the sheet to the winding shaft 12 of the winding station 93, the corresponding winding motor 14 drives the winding shaft 12 to rotate, so that the beginning of the sheet is rolled up onto the winding shaft 12, the operator exits the range of the winding device 40, the rotating frame 11 rotates, so that the winding shaft 12 of the winding station 93 rotates to the winding station 91, and the winding device 40 performs normal winding. When the winding shaft 12 of the winding station 91 is fully rolled, the floating rollers 2 of the storage device 10 all move toward the middle to release the sheet, the rotating frame 11 flips to rotate the winding shaft 12 of the unwinding station 92 to the winding station 93, the winding shaft 12 of the winding station 91 rotates to the lower side of the unwinding station 92, the traction motor of the traction and cutting device 30 stops working, and a pair of traction rollers 6 stop pulling the sheet, and the floating rollers 2 of the storage device 10 move to the upper and lower sides respectively to store the sheet transported downstream; at the same time, the pressing block 741 moves downward to press the sheet on the table 71, and the cross-cutting knife 72 moves from left to right under the drive of the transverse movement assembly 73 to cut the sheet, and the pressing block 741 and the cross-cutting knife 72 After resetting, the traction motor starts working, and a pair of traction rollers 6 convey multiple sheets to the downstream winding device 40. The operator rolls the sheet onto the winding shaft 12 of the winding station 93. After the operator exits, the rotating frame 11 rotates a certain angle, and the winding shaft 12 of the winding station 93 descends to the winding station 91, and the fully rolled winding shaft 12 rises to the unloading station 92. The swing arm 15 swings to the first position, and the lifting seat 16 rises under the drive of the lifting hydraulic cylinder 18 to lift the fully rolled winding shaft, and the swing arm 15 swings to the second position to move the fully rolled winding shaft 12 out of the unloading station 92. The lifting seat 16 and the swing arm 15 are reset, and the operator replenishes the empty winding shaft 12 at the unloading station 92 to wait for the next roll change.

[0039] The present application is suitable for the winding of wide-width SGP sheets, performs online slitting of the sheets, and enables a winding shaft to simultaneously wind multiple rolls of sheets, thereby improving production efficiency.

[0040] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A sheet winding machine, characterized in that: include: A storage device, a slitting device, a traction and cutting device, a winding device and an unwinding device are arranged in sequence from front to back, and the sheet material passes through the storage device, the slitting device, the traction and cutting device and the winding device in sequence; the storage device includes a frame and a plurality of mutually parallel floating rollers rotatably arranged on the frame, the plurality of floating rollers are arranged alternately up and down from front to back, and each of the floating rollers can move in the up and down direction; the slitting device includes at least one slitting knife for slitting the sheet material into a plurality of strips, and each of the slitting knives is configured to be able to move in the left and right direction to adjust the width of the slitting sheet material; the traction and cutting device includes a pair of traction rollers arranged opposite to each other up and down, a cutting mechanism for cutting the sheet material in the left and right direction and a A transition roller, the cutting path of the cutting mechanism is located between a pair of the traction rollers and the transition roller; the winding device includes a frame, a rotating frame rotatably arranged on the frame, and a pair of winding shafts rotatably arranged on the rotating frame around its own axis, the winding device has a winding station close to the traction and cutting device and an unwinding station arranged at the rear side of the winding station, the pair of winding shafts rotate alternately to the winding station to wind up multiple sheets; the unwinding device is arranged at the unwinding station, the unwinding device includes a swing arm swingingly arranged on the frame, the swing arm has a first position located directly below the winding shaft at the unwinding station and a second position for moving the winding shaft at the unwinding station out of the unwinding station.

2. The sheet winding machine according to claim 1, characterized in that: The material storage device also includes multiple floating fixed plates and a chain drive synchronization mechanism. Each floating roller is equipped with a floating fixed plate. Each floating roller can be rotatably installed around its own axis on the corresponding floating fixed plate. The chain drive synchronization mechanism is connected to the multiple floating fixed plates to drive each floating fixed plate to move in the up and down directions.

3. The sheet winding machine according to claim 1, characterized in that: At least one of the slitting knives is a rolling knife, each of the slitting knives has an axis extending in the left-right direction and can rotate around its own axis, and the blade of each of the slitting knives is arranged around the axis of each of the slitting knives.

4. The sheet winding machine according to claim 3, characterized in that: The slitting device also includes a transition aluminum roller extending in the left-right direction, the transition aluminum roller is arranged on the lower side of the at least one slitting knife, and the outer surface of the transition aluminum roller is tangent to the blade of the at least one slitting knife.

5. The sheet winding machine according to claim 1, characterized in that: The cutting mechanism includes a table top and a cross-cutting knife capable of passing through the table top. The table top is arranged extending in the left-right direction at the lower side of the moving path of the sheet transported between a pair of traction rollers and the transition roller, and a cutting groove is provided on the table top for the cross-cutting knife to pass through; the cutting groove extends in the left-right direction so that the cross-cutting knife can move back and forth in the left-right direction relative to the table top.

6. The sheet winding machine according to claim 5, characterized in that: The cutting mechanism also includes a clamping assembly arranged on the upper side of the table top, the clamping assembly includes a clamping block that can move in the up and down directions and a clamping cylinder connected to the clamping block, the clamping cylinder can drive the clamping block to press the sheet against the upper surface of the table top, and a groove is provided at the bottom of the clamping block to accommodate the passage of the cross-cutting knife, the groove extends in the left and right directions, and the groove is arranged opposite to the cutting groove in the upper and lower directions.

7. The sheet winding machine according to claim 5, characterized in that: The cross-cutting knife is transmission-connected to a transverse shifting assembly, and the transverse shifting assembly includes a transverse shifting motor, a driving sprocket, a driven sprocket, and a chain connected between the driving sprocket and the driven sprocket. The driving sprocket is transmission-connected to the transverse shifting motor, the driven sprocket is arranged opposite to the driving sprocket on the left and right, and the cross-cutting knife is connected to the chain.

8. The sheet winding machine according to claim 1, characterized in that: The winding device also includes a rotating motor and a pair of winding motors. The rotating motor is transmission-connected between the frame and the rotating frame to drive the rotating frame to rotate relative to the frame. The pair of winding motors are arranged on the rotating frame and are transmission-connected to the pair of winding shafts respectively. Each winding motor is used to drive the corresponding winding shaft to rotate around its own axis.

9. The sheet winding machine according to claim 1, characterized in that: The unloading device includes a lifting seat slidably arranged on the swing arm, a lifting hydraulic cylinder driving the lifting seat to slide, and a swing hydraulic cylinder driving the swing arm to switch between the first position and the second position. One end of the swing arm is hinged to the frame, and the lifting seat is slidably arranged at the other end of the swing arm, and slides upward when the swing arm is in the first position to lift the winding shaft of the unloading station.

10. The sheet winding machine according to claim 1, characterized in that: The winding device also includes a winding station, which is located on the upper side of the winding station. In the front-to-back direction, the distance between the winding station and the winding station is smaller than the distance between the winding station and the unwinding station. When one of the winding shafts is located at the winding station, the other winding shaft is located at the lower side of the unwinding station.

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