Ultrathin micro-modeling current collector winding and flattening device
By designing an ultra-thin micro-shaped current collector rolling flattening device, and using the combined structure of the guide roller adjustment component and the flattening device, the problem of folding is easily encountered in the production process of micro-shaped current collectors is solved, and the flatness and production efficiency of the current collector surface are improved.
Patent Information
- Application Number
- CN202422090095.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the prior art, micro-shaped current collectors are prone to wrinkles during the production process, resulting in problems such as uneven surface, concentrated stress, uneven tension, and incorrect lines, affecting product quality and production efficiency.
An ultra-thin micro-shaped current collector rolling flattening device is designed, including a rolling device, a rolling device, a guide roller assembly and a flattening device. The guide roller adjustment assembly adjusts the rolling direction of the guide roller consistent with the movement direction of the current collector, and combines the glue strips and ball structures in the flattening device to achieve flattening and winding of the current collector.
It effectively avoids wrinkles in the current collector during the production process, ensures the flatness and quality of the current collector surface, and improves production efficiency and product performance.
Smart Images
Figure CN222947810U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ultra-thin micro-shaped current collector production, and specifically relates to an ultra-thin micro-shaped current collector rolling and flattening device. Background Art
[0002] As the name suggests, the current collector refers to the structure or part that collects current. In lithium-ion batteries, it mainly refers to metal foil, such as copper foil, aluminum foil, or a composite current collector formed by a metal layer and a polymer base film.
[0003] With the rapid development of new energy towards high energy density, large storage, and lightweight, the thickness of micro-shaped current collectors is required to be thinner and thinner. However, the thinner the micro-shaped current collector, the greater the probability of wrinkles during the production process. The wrinkle phenomenon is mainly manifested in the uneven surface of the ultra-thin current collector, stress concentration, uneven tension, and irregular texture inclination. Once wrinkles occur, the machine is shut down for maintenance, and the length of the micro-shaped current collector does not meet the standard, resulting in large losses.
[0004] Therefore, it is necessary to design a micro-shaped current collector production device that is not prone to wrinkles. Utility Model Content
[0005] The purpose of the present invention is to provide an ultra-thin micro-shaped current collector rolling and flattening device to solve the problem that the current collector is prone to wrinkles in the prior art.
[0006] In order to achieve the above purpose, this utility adopts the following technical solutions:
[0007] An ultra-thin micro-shaped current collector winding and flattening device comprises an unwinding device, a winding device, a plurality of guide roller assemblies and at least one flattening device connected to a frame, wherein the guide roller assembly and the flattening device are both located between the unwinding device and the winding device, and the current collector enters from the unwinding device, passes through the guide roller assembly and the flattening device, and is wound up at the winding device; the guide roller assembly comprises a guide roller and a first guide roller adjustment assembly and a second guide roller adjustment assembly arranged at both ends of the guide roller, wherein the first guide roller adjustment assembly controls one end of the guide roller to move up and down, and the second guide roller adjustment assembly controls the other end of the guide roller to move forward and backward; the first guide roller adjustment assembly controls the first guide roller to move up and down, and the second guide roller adjustment assembly controls the second guide roller to move forward and backward; the first guide roller adjustment assembly controls the second guide roller to move forward and backward; the first guide roller adjustment assembly controls the first guide roller to move forward and backward; the second ... second guide roller adjustment assembly controls the second guide roller to move forward and backward; the first guide roller adjustment assembly controls the first guide roller to move forward and backward; the second guide roller adjustment assembly controls the second guide roller to move forward and backward; the first guide roller adjustment assembly controls the first guide roller to move forward and backward; the second guide roller adjustment assembly The guide roller adjustment assembly and the second guide roller adjustment assembly each include an adjustment code disk, a code disk locking block, a fixed block, a screw rod, a bearing seat and a connecting block, the guide roller is connected to the bearing seat through the connecting block, the fixed blocks are arranged on the upper and lower sides of the bearing seat, one of the fixed blocks is sequentially provided with the code disk locking block and the adjustment code disk, the screw rod passes through the bearing seat, the fixed block and the code disk locking block and is connected to the adjustment code disk, rotating the adjustment code disk can drive the guide roller to move linearly, the first guide roller adjustment assembly and the second guide roller adjustment assembly are both fixed to the frame fixing plate through the fixing block, and the frame fixing plate is fixed to the frame;
[0008] The ultra-thin micro-shaped current collector winding and flattening device of the utility model is provided with a first guide roller adjustment component and a second guide roller adjustment component. The adjustment code disk of the first guide roller adjustment component is rotated, and one end of the guide roller moves up and down, so that the guide roller is parallel to the plane where the current collector is located. The adjustment code disk of the second guide roller adjustment component is rotated, and the other end of the guide roller moves back and forth, so that the rolling direction of the guide roller is consistent with the movement direction of the current collector. In the actual process, more than two adjustments may be required. Through multiple adjustments of the guide roller adjustment components at both ends, the rolling direction of the guide roller is finally consistent with the movement direction of the current collector, so as to avoid wrinkles in the finally rolled-up current collector due to the inconsistency between the rolling direction of the guide roller and the movement direction of the current collector when the current collector passes through the guide roller.
[0009] Optionally, the bearing seat moves 5μm for each rotation of the adjustment code disk, and the movement range of the bearing seat is ±5mm.
[0010] Optionally, there is a certain anti-friction gap between the bearing seat and the frame fixing plate.
[0011] By setting the gap, the bearing seat is prevented from rubbing against the frame fixing plate when moving up and down, which would cause the guide roller to move unsmoothly, and at the same time, the device is prevented from being damaged due to friction.
[0012] Optionally, the flattening device includes a flattening component and a fixing device, the flattening component includes a through shaft, an eccentric sleeve, a rubber strip connecting seat, and a plurality of rubber strips; the eccentric sleeves are sleeved on both ends of the through shaft, the rubber strip connecting seat is sleeved on the eccentric sleeve and a ball is arranged between the eccentric sleeve and the rubber strip connecting seat, the rubber strip is connected between the two rubber strip connecting seats, one end of the fixing device is sleeved on the through shaft and located on the outside of the eccentric sleeve, and the other end of the fixing device is fixed to the frame.
[0013] By setting up the flattening device, the surface of the rubber strip is in contact and squeezed with the surface of the current collector during the winding process of the current collector, thereby achieving flattening of the current collector; by setting up the ball, the rubber strip connecting seat can rotate on the eccentric sleeve; by setting up the eccentric sleeve, the rubber strip connecting seat makes eccentric movement during the rotation process, thereby stretching the rubber strips connected between the rubber strip connecting seats. The length of each rubber strip is different, which is convenient for flattening current collectors of different thicknesses.
[0014] Optionally, the cross-section of the middle section of the through shaft is circular, the cross-sections of the two ends are rectangular, and the two end portions of the through shaft are located outside the fixing device.
[0015] By setting the rectangular cross-sections at both ends of the through shaft, when the fixing device is sleeved on the through shaft, the through shaft will not rotate relative to the fixing device, and the fixing effect of the fixing device is better.
[0016] Optionally, there are 8-10 rubber strips, and the width of the rubber strips is 10-30 mm.
[0017] The arrangement of multiple rubber strips and rubber strip widths facilitates the contact and extrusion between the rubber strips and the current collector surface.
[0018] Optionally, the winding device is provided with a spiral auxiliary flattening roller, and the spiral auxiliary flattening roller is connected to the winding device through a bracket, a slide groove is provided on the inner side of the bracket, the spiral auxiliary flattening roller is slidably connected to the slide groove, a through hole is provided at the bottom end of the bracket, and the bracket is rotatably connected to the winding device through the through hole.
[0019] Optionally, the spiral directions of the threads on the left and right sides of the spiral auxiliary flattening roller are opposite.
[0020] By setting the spiral auxiliary flattening roller, when the current collector enters the winding device for winding, the spiral auxiliary flattening roller will contact and squeeze the surface of the current collector. The spiral directions of the left and right sides of the spiral auxiliary flattening roller are opposite, so that the surface of the current collector extends outward, ensuring that no wrinkles will appear on the surface of the current collector during the winding process. As more current collectors are wound on the winding device, the spiral auxiliary flattening roller will slide on the bracket, always keeping the surface of the current collector in contact with the spiral auxiliary flattening roller.
[0021] Beneficial effect: The ultra-thin micro-shaped current collector winding and flattening device of the utility model, through the setting of the first guide roller adjustment component and the second guide roller adjustment component, rotates the adjustment code disk of the first guide roller adjustment component to make one end of the guide roller move up and down, so that the guide roller is parallel to the plane where the current collector is located, and rotates the adjustment code disk of the second guide roller adjustment component to make the other end of the guide roller move back and forth, so that the rolling direction of the guide roller is consistent with the movement direction of the current collector. In the actual process, more than two adjustments may be required. Through multiple adjustments of the guide roller adjustment components at both ends, the rolling direction of the guide roller is finally consistent with the movement direction of the current collector, thereby avoiding wrinkles in the finally rolled-up current collector due to the inconsistency between the rolling direction of the guide roller and the movement direction of the current collector when the current collector passes through the guide roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a schematic diagram of the overall structure of the guide roller assembly in the embodiment;
[0023] Figure 2 for Figure 1 Enlarged view of part A of the middle guide roller assembly;
[0024] Figure 3 It is a schematic diagram of the overall structure of the flattening device in the embodiment;
[0025] Figure 4 A partial perspective view of a flattened assembly in an embodiment;
[0026] Figure 5 is a side view of the flattening assembly in the embodiment (ball bearings omitted);
[0027] Figure 6 It is a schematic diagram of the overall structure of the winding device in the embodiment;
[0028] Figure 7 It is a flow chart of rolling and flattening the ultra-thin micro-shaped current collector in the embodiment.
[0029] In the figure: 1. unwinding device; 2. winding device; 21. spiral auxiliary flattening roller; 22. bracket; 23. slide groove; 3. guide roller assembly; 31. guide roller; 301. adjustment code disk; 302. code disk locking block; 303. fixing block; 304. screw rod; 305. bearing seat; 306. connecting block; 4. flattening device; 41. flattening assembly; 401. through shaft; 402. eccentric shaft sleeve; 403. rubber strip connecting seat; 4031. ball bearing; 404. rubber strip; 42. fixing device; 5. frame fixing plate; 6. belt connection platform; 7. tension control system; 8. micro-molding device; 9. sampling platform. DETAILED DESCRIPTION
[0030] Example 1
[0031] like Figure 1-Figure 7 As shown, this embodiment provides an ultra-thin micro-shaped current collector rolling and flattening device, see Figure 7 , comprising an unwinding device 1, a winding device 2, a plurality of guide roller assemblies 3 and at least one flattening device 4 connected to a frame, wherein the guide roller assembly 3 and the flattening device 4 are both located between the unwinding device 1 and the winding device 2, and the current collector enters from the unwinding device 1, passes through the guide roller assembly 3 and the flattening device 4, and is wound up at the winding device 2; see Figure 1 and Figure 2 The guide roller assembly 3 includes a guide roller 31 and a first guide roller adjustment assembly and a second guide roller adjustment assembly arranged at both ends of the guide roller 31. The first guide roller adjustment assembly controls one end of the guide roller 31 to move up and down, and the second guide roller adjustment assembly controls the other end of the guide roller 31 to move forward and backward. Specifically, the guide roller 31 is an aluminum oxide roller with a diameter of 100 mm; see Figure 2The first guide roller adjustment assembly and the second guide roller adjustment assembly both include an adjustment code disk 301, a code disk locking block 302, a fixed block 303, a screw rod 304, a bearing seat 305 and a connecting block 306. The guide roller 31 is connected to the bearing seat 305 through the connecting block 306. The fixing blocks 303 are provided on the upper and lower sides of the bearing seat 305. One of the fixing blocks 303 is provided with the code disk locking block 302 and the adjustment code disk 301 in sequence. The screw rod 304 passes through the bearing seat 305, the fixed block 303 and the code disk locking block 302 and is connected to the adjustment code disk 301. Rotating the adjustment code disk 301 can drive the guide roller 31 to move in a straight line. Movement, in the specific implementation process, the bearing seat 305 moves 5μm for every rotation of the adjustment code disk 301 by 1 grid, and the movement range of the bearing seat 305 is ±5mm; the first guide roller adjustment assembly and the second guide roller adjustment assembly are both fixed to the frame fixing plate 5 through the fixing block 303, and the frame fixing plate 5 is fixed to the frame; in the present embodiment, there is a certain anti-friction gap between the bearing seat 305 and the frame fixing plate 5, specifically, the gap is 2mm, and the setting of the gap can prevent the bearing seat 305 from rubbing against the frame fixing plate 5 when moving up and down, resulting in the unsmooth movement of the guide roller 31, and at the same time, avoid the device from being damaged by friction.
[0032] The ultra-thin micro-shaped current collector winding and flattening device of the utility model is configured with a first guide roller adjustment component and a second guide roller adjustment component. The adjustment code disk 301 of the first guide roller adjustment component is rotated, and one end of the guide roller 31 moves up and down, so that the guide roller 31 is parallel to the plane where the current collector is located. The adjustment code disk 301 of the second guide roller adjustment component is rotated, and the other end of the guide roller 31 moves back and forth, so that the rolling direction of the guide roller 31 is consistent with the movement direction of the current collector. In the actual process, more than two adjustments may be made. Through multiple adjustments of the guide roller adjustment components at both ends, the rolling direction of the guide roller 31 is finally consistent with the movement direction of the current collector, so as to avoid wrinkles in the finally rolled-up current collector due to the inconsistency between the rolling direction of the guide roller 31 and the movement direction of the current collector when the current collector passes through the guide roller 31.
[0033] It should be noted that in this embodiment, there may be more than one guide roller assembly 3, and guide roller adjustment assemblies are provided at both ends of each guide roller 31. Before starting the device, each guide roller 31 needs to be adjusted by the guide roller adjustment assembly so that the rolling direction of each guide roller 31 is consistent with the movement direction of the collector.
[0034] For further information, see Figure 3-Figure 5The flattening device 4 includes a flattening component 41 and a fixing device 42, the flattening component 41 includes a through shaft 401, an eccentric shaft sleeve 402, a rubber strip connecting seat 403, and a plurality of rubber strips 404; the eccentric shaft sleeves 402 are sleeved on both ends of the through shaft 401, and specifically, the through shaft 401 and the eccentric shaft sleeve 402 are fixed together by bolts; the eccentric shaft sleeve 402 is sleeved with the rubber strip connecting seat 403 and a ball 4031 is provided between the eccentric shaft sleeve 402 and the rubber strip connecting seat 403, the rubber strip 404 is connected between the two rubber strip connecting seats 403, specifically, the rubber strip 404 is fixed to the rubber strip connecting seat 403 by bolts, one end of the fixing device 42 is sleeved on the through shaft 401 and is located on the outside of the eccentric shaft sleeve 402, and the fixing device The other end of the device 42 is fixed on the frame; specifically, during the eccentric movement of the rubber strip connecting seat 403, the difference between the shortest rubber strip 404 and the longest rubber strip 404 is 1.2 cm; preferably, 8 to 10 rubber strips 404 are provided, and the width of the rubber strip 404 is 10 to 30 mm. The arrangement of multiple rubber strips 404 and the width of the rubber strip 404 facilitates the contact and extrusion between the rubber strip 404 and the surface of the collector; the cross-section of the middle section of the through shaft 401 is circular; the cross-sections at both ends are rectangular, and the end portions of the through shaft 401 are located on the outside of the fixing device 42; by the arrangement of the rectangular cross-sections at both ends of the through shaft 401, when the fixing device 42 is sleeved on the through shaft 401, the through shaft 401 will not rotate relative to the fixing device 42, and the fixing effect of the fixing device 42 is better.
[0035] By setting the flattening device 4, the surface of the rubber strip 404 contacts and squeezes the surface of the current collector during the winding process of the current collector, thereby achieving flattening of the current collector; the setting of the ball 4031 allows the rubber strip connecting seat 403 to rotate on the eccentric sleeve 402; the setting of the eccentric sleeve 402 allows the rubber strip connecting seat 403 to perform eccentric movement during the rotation process, thereby allowing the rubber strips 404 connected between the rubber strip connecting seats 403 to stretch. The length of each rubber strip 404 is different, which is convenient for flattening current collectors of different thicknesses.
[0036] For further information, see Figure 6 The winding device 2 is provided with a spiral auxiliary flattening roller 21, and the spiral auxiliary flattening roller 21 is connected to the winding device 2 through a bracket 22. A slide groove 23 is provided on the inner side of the bracket 22, and the spiral auxiliary flattening roller 21 is slidably connected to the slide groove 23. A through hole is provided at the bottom end of the bracket, and the bracket 22 is rotatably connected to the winding device 2 through the through hole. Specifically, the spiral directions of the threads on the left and right sides of the spiral auxiliary flattening roller 21 are opposite.
[0037] By setting the spiral auxiliary flattening roller 21, when the current collector enters the winding device 2 for winding, the spiral auxiliary flattening roller 21 will contact and squeeze the surface of the current collector. The spiral directions of the left and right sides of the spiral auxiliary flattening roller 21 are opposite, so that the surface of the current collector extends outward, ensuring that no wrinkles will appear on the surface of the current collector during the winding process. As more current collectors are wound on the winding device 2, the spiral auxiliary flattening roller 21 will slide on the bracket 22, always keeping the surface of the current collector in contact with the spiral auxiliary flattening roller 21.
[0038] Working principle: During the use of the ultra-thin micro-shaped current collector winding and flattening device of this embodiment, the guide roller assembly 3 and the flattening device 4 are both arranged between the unwinding device 1 and the winding device 2, and at least one guide roller assembly 3 and flattening device 4 are respectively arranged, and the specific number can be adjusted according to one's own needs; the current collector enters the unwinding device 1 through the guide roller assembly 3 and the flattening device 4 and enters the winding device 2 for tightening and winding. Before starting the entire device, first adjust the guide roller adjustment assemblies at both ends so that the rolling direction of the guide roller 31 is consistent with the movement direction of the current collector. Guide roller adjustment assemblies are arranged at both ends of each guide roller 31, which need to be adjusted separately so that the rolling direction of the guide rollers 31 in the entire device is consistent with the movement direction of the current collector; after the guide roller 31 is adjusted, start the device, the unwinding device 1 flattens and releases the current collector, and the current collector enters the flattening device 4 through the guide roller assembly 3 or directly enters the flattening device 4. Device 4, the rubber strip 404 on the rubber strip connecting seat 403 is in contact with and squeezed on the surface of the current collector, and the surface of the current collector is squeezed and flattened. Due to the eccentric shaft sleeve 402 and the ball 4031, when the current collector enters the flattening device 4, the rubber strip connecting seat 403 is driven to do eccentric movement. The length of each rubber strip 404 on the rubber strip connecting seat 403 is different, which is convenient for flattening current collectors of different thicknesses; the flattened current collector can directly enter the winding device 2, or it can be guided by the guide roller assembly 3 and then enter the winding device 2; when the current collector enters the winding device 2, the spiral auxiliary flattening roller 21 on the winding device 2 is in contact with and squeezed on the surface of the current collector, so that the surface of the current collector extends outward. As more current collectors are wound on the winding device 2, the spiral auxiliary flattening roller 21 will slide on the bracket 22, and the surface of the current collector is always kept in contact with the spiral auxiliary flattening roller 21, to ensure that no wrinkles appear on the surface of the current collector during the winding process.
[0039] Example 2
[0040] like Figure 7 As shown, this embodiment provides a method for rolling and flattening an ultra-thin micro-shaped current collector, using the ultra-thin micro-shaped current collector rolling and flattening device in Example 1, including the following steps:
[0041] The guide roller adjustment assembly adjusts the guide roller 31 so that the rolling direction of the guide roller 31 is consistent with the moving direction of the current collector;
[0042] The unwinding device 1 unfolds the current collector;
[0043] The tape connection platform 6 uses a special adhesive tape to bond the end of the previous roll of current collector and the beginning of the next roll of current collector together;
[0044] The tension control system 7 controls the tension of the current collector;
[0045] The flattening device 4 flattens the current collector surface;
[0046] The micro-molding device 8 adjusts the microscopic morphology of the current collector surface;
[0047] Flattening device 4 flattens for the second time;
[0048] The tension control system 7 controls the tension of the current collector;
[0049] The sampling platform 9 randomly checks whether the current collector is qualified;
[0050] The winding device 2 winds up the qualified current collector through the spiral auxiliary flattening roller 21 .
[0051] It should be noted that, in this method, the location and number of the guide roller assembly 3 are not limited, and the number of the flattening device 4 and the tension adjustment device 7 is not limited.
[0052] Working principle: The ultra-thin micro-shaped current collector rolling and flattening method of this embodiment first adjusts the guide roller adjustment components at both ends of each guide roller 31 to make the rolling direction of the guide roller 31 consistent with the movement direction of the current collector; then the current collector is unfolded and released through the unwinding device 1; the end of the previous roll of the current collector and the beginning of the next roll of the current collector are bonded together with a special tape through the tape connecting platform 6; then the current collector tension is controlled by the tension control system 7; then it enters the flattening device 4, and the flattening device 4 flattens the surface of the current collector; the flattened current collector enters the micro-shaped molding device 8, and the micro-shaped molding device 8 adjusts the microscopic morphology of the surface of the current collector; then it enters the flattening device 4 for secondary flattening; then the current collector tension is controlled by the tension control system 7; then it enters the sampling platform 9 to spot-check whether the current collector is qualified; finally, the winding device 2 winds up the qualified current collector through the spiral auxiliary flattening roller 21.
[0053] The current collector obtained by this method has a smooth surface, which solves the problem of wrinkles easily appearing in the current collector during the production process in the prior art and improves the overall performance of the current collector.
[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An ultra-thin micro-shaped current collector winding and flattening device, comprising an unwinding device (1) connected to a frame, a winding device (2), a plurality of guide roller assemblies (3) and at least one flattening device (4), wherein the guide roller assembly (3) and the flattening device (4) are both located between the unwinding device (1) and the winding device (2), and the current collector enters from the unwinding device (1), passes through the guide roller assembly (3) and the flattening device (4) to the winding device (2) for winding; characterized in that: The guide roller assembly (3) comprises a guide roller (31) and a first guide roller adjustment assembly and a second guide roller adjustment assembly arranged at both ends of the guide roller (31); the first guide roller adjustment assembly controls one end of the guide roller (31) to move up and down, and the second guide roller adjustment assembly controls the other end of the guide roller (31) to move forward and backward; the first guide roller adjustment assembly and the second guide roller adjustment assembly both comprise an adjustment code disk (301), a code disk locking block (302), a fixing block (303), a screw rod (304), a bearing seat (305) and a connecting block (306); the guide roller (31) is connected to the bearing seat (305) via the connecting block (306). ), the bearing seat (305) is provided with the fixing blocks (303) on the upper and lower sides, one of the fixing blocks (303) is provided with the code disc locking block (302) and the adjusting code disc (301) in sequence, the screw rod (304) passes through the bearing seat (305), the fixing block (303) and the code disc locking block (302) and is connected to the adjusting code disc (301), and the rotating adjusting code disc (301) can drive the guide roller (31) to move linearly, the first guide roller adjustment assembly and the second guide roller adjustment assembly are both fixed to the frame fixing plate (5) through the fixing blocks (303), and the frame fixing plate (5) is fixed to the frame.
2. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 1, characterized in that: Each time the adjusting code disc (301) rotates one grid, the bearing seat (305) moves 5 μm, and the movement range of the bearing seat (305) is ±5 mm.
3. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 1, characterized in that: An anti-friction gap exists between the bearing seat (305) and the frame fixing plate (5).
4. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 1, characterized in that: The flattening device (4) comprises a flattening assembly (41) and a fixing device (42), wherein the flattening assembly (41) comprises a through shaft (401), an eccentric shaft sleeve (402), a rubber strip connecting seat (403) and a plurality of rubber strips (404); the eccentric shaft sleeves (402) are sleeved at both ends of the through shaft (401), the rubber strip connecting seat (403) is sleeved on the eccentric shaft sleeve (402), and a ball (4031) is arranged between the eccentric shaft sleeve (402) and the rubber strip connecting seat (403), the rubber strip (404) is connected between the two rubber strip connecting seats (403), one end of the fixing device (42) is sleeved on the through shaft (401) and is located on the outside of the eccentric shaft sleeve (402), and the other end of the fixing device (42) is fixed to the frame.
5. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 4, characterized in that: The cross section of the middle section of the through shaft (401) is circular, and the cross sections of the two ends are rectangular. The two end portions of the through shaft (401) are located outside the fixing device (42).
6. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 4, characterized in that: The number of the rubber strips (404) is 8-10, and the width of the rubber strips (404) is 10-30 mm.
7. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 1, characterized in that: The winding device (2) is provided with a spiral auxiliary flattening roller (21), and the spiral auxiliary flattening roller (21) is connected to the winding device (2) via a bracket (22). A slide groove (23) is provided on the inner side of the bracket (22), and the spiral auxiliary flattening roller (21) is slidably connected to the slide groove (23). A through hole is provided at the bottom end of the bracket, and the bracket (22) is rotatably connected to the winding device (2) via the through hole.
8. The ultra-thin micro-shaped current collector rolling and flattening device according to claim 7, characterized in that: The spiral directions of the threads on the left and right sides of the spiral auxiliary flattening roller (21) are opposite.