Lithium strip rolling composite mechanism and lithium strip processing equipment
By designing a lithium strip calendering and composite mechanism that integrates calendering, thinning, slitting, peeling, and shaping processes, the problems of limited functionality and low efficiency of existing equipment are solved, enabling efficient and flexible lithium strip processing and improving lithium battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KATOP AUTOMATION CO LTD
- Filing Date
- 2024-12-10
- Publication Date
- 2026-05-19
AI Technical Summary
Existing lithium battery electrode rolling and thinning equipment has limited functionality, poor versatility, and limited application flexibility, resulting in low production efficiency. Furthermore, the thinning of lithium strips requires additional equipment, which further reduces production efficiency.
Design a lithium strip calendering and composite mechanism, including a substrate unwinding module, an upper belt unwinding module, a lower belt unwinding module, a four-roll calendering and composite module, a slitting module, a peeling module, a shaping module, and a lithium strip rewinding module, etc., to realize the calendering and composite, thinning, slitting, peeling and shaping processes of lithium strip in the same equipment. The four-roll calendering and composite module can be used to adjust multiple processes, thereby improving versatility and efficiency.
It achieves multi-process integration of lithium strip, improves production efficiency, obtains higher areal density and density uniformity, and the equipment does not need to be stopped, which significantly improves production efficiency.
Smart Images
Figure CN224264056U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery production, and in particular to a lithium strip rolling composite mechanism and lithium strip processing equipment. Background Technology
[0002] With the application of new energy industries, the demand for lithium batteries is increasing. Among these, the energy density of lithium electrodes has become a major evaluation standard for lithium battery performance. To achieve higher energy density in lithium batteries, as many electrodes as possible need to be stacked within the cell. To stack even more electrodes, they need to be rolled and thinned to achieve higher energy density and thus improve battery performance. Therefore, electrode rolling and thinning is a crucial process in lithium battery production. Traditional electrode rolling and thinning mechanisms generally only perform a single thinning function and can only handle a single type of rolling and thinning operation. They are not suitable for composite thinning of different materials, resulting in poor application flexibility and versatility. Furthermore, existing thinning equipment requires a step-by-step operation, leading to low efficiency. After the lithium strip is thinned, it needs to be processed in conjunction with other trimming and slitting equipment, further reducing production efficiency.
[0003] Therefore, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, this utility model provides a lithium strip calendering composite mechanism and lithium strip processing equipment, which effectively solves the technical defects of the prior art in thinning lithium strip, such as single function, poor versatility, poor application flexibility, low product density, uneven density, and low efficiency.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A lithium strip calendering composite mechanism includes a substrate unwinding module, an upper load belt unwinding module, a lower load belt unwinding module, a four-roll calendering composite module, a slitting module, a peeling module, a shaping module, a lithium strip winding module, an upper load belt waste film winding module, a lower load belt waste film winding module, and a lower load belt winding module. The substrate unwinding module, the upper load belt unwinding module, and the lower load belt unwinding module are located on a first side of the four-roll calendering composite module. The substrate unwinding module and the four-roll calendering composite module form a first side path. The upper load belt unwinding module is located above the first side path and forms a first unwinding path with the four-roll calendering composite module. The lower load belt unwinding module is located below the first side path and forms a second unwinding path with the four-roll calendering composite module. The unwinding belt includes a slitting module, a peeling module, a shaping module, a lithium strip winding module, an upper load belt waste film winding module, a lower load belt waste film winding module, and a lower load belt winding module located on the second side of the four-roll calendering composite module. The four-roll calendering composite module, together with the slitting module, peeling module, shaping module, and lithium strip winding module, forms a second side belt. The upper load belt waste film winding module is located above the second side belt and forms a first winding belt with the four-roll calendering composite module. The lower load belt waste film winding module is located below the second side belt and forms a second winding belt with the four-roll calendering composite module. The lower load belt winding module is located below the second side belt and forms a third winding belt with the peeling module.
[0007] As a further improvement to the above technical solution, the four-roll calendering composite module includes a first calendering composite roll, a second calendering composite roll, a third calendering composite roll, and a fourth calendering composite roll. The first calendering composite roll and the second calendering composite roll form a first calendering composite roll group, and the third calendering composite roll and the fourth calendering composite roll form a second calendering composite roll group. The roll spacing of the first calendering composite roll group and the second calendering composite roll group is adjustable.
[0008] As a further improvement to the above technical solution, along the lithium strip's travel path, a lithium strip unwinding tension roller module is provided between the substrate unwinding module and the four-roll calendering composite module, and a lithium strip winding tension roller module is provided between the shaping module and the lithium strip winding module.
[0009] As a further improvement to the above technical solution, along the belt travel path of the upper carrier belt, an upper carrier belt unwinding tension roller module is provided between the upper carrier belt unwinding module and the four-roll calendering composite module, and an upper carrier belt waste film winding tension roller module is provided between the four-roll calendering composite module and the upper carrier belt waste film winding module.
[0010] As a further improvement to the above technical solution, along the belt travel path, a belt unwinding tension roller module is provided between the belt unwinding module and the four-roll calendering composite module, and a belt waste film winding tension roller module is provided between the four-roll calendering composite module and the belt waste film winding module.
[0011] As a further improvement to the above technical solution, a download tape winding tension roller module is provided between the peeling module and the download tape winding module.
[0012] As a further improvement to the above technical solution, the stripping module includes a mounting base plate and side mounting plates disposed on both sides of the mounting base plate. The side mounting plates have two pieces, and a porous vacuum adsorption roller is disposed between the two side mounting plates. The mounting base plate is also provided with a sliding mounting seat, and a swing mounting plate is hinged to the sliding mounting seat. A closing roller is disposed at the free end of the swing mounting plate. A closing roller swing cylinder is hinged to the side mounting plate. The output end of the closing roller swing cylinder is hinged to the swing mounting plate and can drive the swing mounting plate to rotate around its hinge axis to synchronously drive the closing roller to approach or move away from the porous vacuum adsorption roller. The composite lithium strip that needs to be stripped passes through the gap between the closing roller and the porous vacuum adsorption roller.
[0013] As a further improvement to the above technical solution, the porous vacuum adsorption roller includes an outer shell and a one-way negative pressure chamber disposed inside the outer shell. Negative pressure holes are uniformly opened on the outer shell, and the one-way negative pressure chamber is connected to an external negative pressure source.
[0014] As a further improvement to the above technical solution, the sliding mounting base is mounted on the mounting base plate via a sliding guide device. The sliding mounting base is equipped with a position adjustment device and a position locking device. The sliding guide device or the mounting base plate is equipped with a scale device, and the sliding mounting base is equipped with a scale indicator needle that cooperates with the scale device.
[0015] This utility model also provides:
[0016] A lithium strip processing device, the lithium strip processing device including the lithium strip calendering composite mechanism.
[0017] The beneficial effects of this utility model are as follows: This utility model provides a lithium strip calendering composite mechanism and lithium strip processing equipment. This lithium strip calendering composite mechanism and lithium strip processing equipment realize the calendering composite, thinning, slitting, peeling and shaping of lithium strip in the same equipment through a four-roll calendering composite module, a slitting module, a peeling module and a shaping module. It can perform multiple processes and can be adapted to the product. It has the advantages of strong flexibility and high versatility. It can also save time and greatly improve production efficiency. In addition, the four-roll calendering composite module can obtain ultra-thin lithium strips. The lithium strip has a higher surface density and more uniform surface density in the later stage of calendering. Moreover, the four-roll calendering composite module does not need to stop during operation, which can further improve efficiency.
[0018] In summary, this lithium strip rolling composite mechanism and lithium strip processing equipment effectively solve the technical defects of existing technologies in thinning lithium strips, such as single function, poor versatility, poor application flexibility, low product density, uneven density, and low efficiency. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Figure 1 This is a schematic diagram illustrating the principle of Embodiment 1 of this utility model;
[0021] Figure 2 This is a schematic diagram of the principle of Embodiment 2 of this utility model;
[0022] Figure 3 This is a schematic diagram of embodiment 3 of the present invention.
[0023] Figure 4 This is a schematic diagram of the peeling module in this utility model;
[0024] Figure 5 This is a schematic diagram of the peeling module from another angle in this utility model;
[0025] Figure 6 yes Figure 5 A cross-sectional view along the AA direction. Detailed Implementation
[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other, as described above. Figure 1-5 .
[0027] Reference Figure 1 A lithium strip calendering composite mechanism includes a substrate unwinding module 11, an upper carrier belt unwinding module 21, a lower carrier belt unwinding module 31, a four-roll calendering composite module 4, a slitting module 5, a peeling module 6, a shaping module 7, a lithium strip winding module 12, an upper carrier belt waste film winding module 22, a lower carrier belt waste film winding module 32, and a lower carrier belt winding module 8. The substrate unwinding module 11, the upper carrier belt unwinding module 21, and the lower carrier belt unwinding module 31 are located on a first side of the four-roll calendering composite module 4. The substrate unwinding module 11 and the four-roll calendering composite module 4 form a first side path. The upper carrier belt unwinding module 21 is located above the first side path and forms a first unwinding path with the four-roll calendering composite module 4. The lower carrier belt unwinding module 31 is located below the first side path and forms a first unwinding path with the four-roll calendering composite module 8. 4. A second unwinding path is formed. The slitting module 5, peeling module 6, shaping module 7, lithium strip winding module 12, upper carrier waste film winding module 22, lower carrier waste film winding module 32, and lower carrier winding module 8 are located on the second side of the four-roll calendering composite module 4. The four-roll calendering composite module 4, together with the slitting module 5, peeling module 6, shaping module 7, and lithium strip winding module 12, forms a second side path. The upper carrier waste film winding module 22 is located above the second side path and forms a first winding path with the four-roll calendering composite module 4. The lower carrier waste film winding module 32 is located below the second side path and forms a second winding path with the four-roll calendering composite module 4. The lower carrier winding module 8 is located below the second side path and forms a third winding path with the peeling module 6.
[0028] The substrate unwinding module 11 is used to unwind the lithium strip. The upper carrier belt unwinding module 21 and the lower carrier belt unwinding module 31 are used to unwind the upper carrier belt and the lower carrier belt, respectively. The four-roll calendering composite module 4 is used to composite and calender the unwound lithium strip, upper carrier belt, and lower carrier belt to form a composite lithium strip of lithium strip and carrier belt. The slitting module 5 is used to slit the composite calendered composite lithium strip. The peeling module 6 is used to peel the carrier belt from the composite lithium strip to obtain a thinned lithium strip. The shaping module 7 is used to shape the thin lithium strip. The lithium strip winding module 12 is used to wind the shaped thin lithium strip. The upper carrier belt waste film winding module 22 is used to wind the upper carrier belt waste film. The lower carrier belt waste film winding module 32 is used to wind the lower carrier belt waste film. The lower carrier belt winding module 8 is used to wind the lower carrier belt from the composite lithium strip that has passed through the peeling module 6.
[0029] Reference Figure 1 The four-roll calendering composite module 4 includes a first calendering composite roll, a second calendering composite roll, a third calendering composite roll, and a fourth calendering composite roll. The first and second calendering composite rolls form a first calendering composite roll group, and the third and fourth calendering composite rolls form a second calendering composite roll group. The roll spacing of both the first and second calendering composite roll groups is adjustable. Specifically, the positions of the first and fourth calendering composite rolls are adjustable, thereby adjusting the roll spacing of the first and second calendering composite roll groups. Specifically, the first, second, third, and fourth calendering composite rolls are arranged sequentially from top to bottom, and the diameters of the first and second calendering composite rolls are smaller than the diameters of the third and fourth calendering composite rolls. The central axes of the first, second, third, and fourth calendering composite rolls are approximately on a vertical plane from top to bottom.
[0030] Reference Figure 1 , Figure 1This is a schematic diagram of Embodiment 1 of the present technical solution. In this embodiment, a suitable number of guide rollers are set between each module as needed. During application, the substrate unwinding module 11 is used to unwind the copper strip, which serves as a current collector. The upper carrier unwinding module 21 and the lower carrier unwinding module 31 are used to unwind the upper carrier belt and the lower carrier belt, respectively. Both the upper carrier belt and the lower carrier belt are single-sided lithium-coated PET strips. The copper strip, the upper carrier belt, and the lower carrier belt pass through the four-roll calendering composite module 4. The calendering composite rollers in the four-roll calendering composite module 4 are used to calender and composite the copper strip, the upper carrier belt, and the lower carrier belt. In this embodiment, the four-roll calendering composite module 4 uses its second calendering composite roller group for calendering and composite work. During this calendering and composite process, the upper carrier belt and the lower carrier belt composite the lithium layer covering their surfaces onto both sides of the copper strip, simultaneously thinning the copper strip, so that the copper-lithium composite strip can obtain a higher areal density. During the calendering and composite process, the four-roll calendering composite module 4 does not need to stop, which can improve efficiency. After the copper strip, upper carrier belt, and lower carrier belt pass through the four-roll calendering composite module 4, a copper-lithium composite strip is formed. Following the composite calendering by the four-roll calendering composite module 4, the upper carrier belt waste film (PET film) is wound up by the upper carrier belt waste film winding module 22, and the lower carrier belt waste film (PET film) is wound up by the lower carrier belt waste film winding module 32. In this embodiment, the copper-lithium composite strip refers to a strip material formed by combining the upper carrier belt, lower carrier belt, and copper strip. The middle layer of the strip material is copper strip, and the upper and lower surface layers are lithium layers formed by combining the upper carrier belt and lower carrier belt onto the copper strip. Further, after peeling off the upper carrier belt waste film and lower carrier belt waste film, the copper-lithium composite strip sequentially passes through the slitting module 5, the peeling module 6, and the shaping module 7, and is finally wound up by the lithium strip winding module 12. In this embodiment, the slitting module 5 does not perform a slitting operation. Since the waste film of the download tape is wound up by the download tape waste film winding module 32, the peeling module 6 and the download tape winding module 8 do not need to work. The copper-lithium composite tape is shaped by the shaping module 7 and then wound up by the download tape waste film winding module 32. Specifically, when the copper-lithium composite tape passes through the shaping module 7, the shaping module 7 performs appearance trimming on the ultra-thin copper-lithium composite tape. The shaping pressure and gap are adjustable, resulting in high application flexibility and strong versatility. After shaping, an ultra-thin copper-lithium composite tape with a perfect appearance is obtained. The thickness of the ultra-thin lithium tape is generally 50µm. The shaped ultra-thin copper-lithium composite tape is then wound up by the lithium tape winding module 12. In this embodiment, the upper carrier tape, copper tape, and download tape pass through the gap between the third and fourth calendering composite rollers, and the upper carrier tape, copper tape, and download tape are calendered, composited, and thinned using the third and fourth calendering composite rollers.
[0031] Reference Figure 2 , Figure 2This is a schematic diagram of Embodiment 2 of the present technical solution. In this embodiment, a suitable number of guide rollers are set between each module as needed. In application, the substrate unwinding module 11 is used to unwind the thick lithium strip, and the upper carrier unwinding module 21 and the lower carrier unwinding module 31 are used to unwind the upper carrier belt and the lower carrier belt, respectively. In this embodiment, both the upper carrier belt and the lower carrier belt are PET belts. The thick lithium strip, the upper carrier belt, and the lower carrier belt pass through the four-roll calendering composite module 4. The calendering composite rollers in the four-roll calendering composite module 4 calender the thick lithium strip, the upper carrier belt, and the lower carrier belt. During this calendering process, the thick lithium strip is simultaneously thinned, so that the lithium strip can obtain a higher areal density. In this embodiment, the four-roll calendering composite module 4 uses its second calendering composite roller group for calendering. During the calendering process, the four-roll calendering composite module 4 does not need to stop, which can improve efficiency. After the thick lithium strip, the upper carrier belt, and the lower carrier belt pass through the four-roll calendering composite module 4, a thin lithium strip is formed. After being calendered by the four-roll calendering composite module 4, the waste film (PET film) of the upper carrier belt is wound up by the upper carrier belt waste film winding module 22. The lower carrier belt waste film winding module 32 does not perform the winding action. The composite belt of thin lithium strip and lower carrier belt is slit by the slitting module 5. After slitting, the composite belt passes through the peeling module 6. At this time, the peeling module 6 peels off the lower carrier belt from the composite belt. After the thin lithium strip is peeled off, the lower carrier belt is wound up by the lower carrier belt winding module 8. After the thin lithium strip is peeled off, the thin lithium strip is shaped by the shaping module 7 and then wound up by the lower carrier belt waste film winding module 32. In this embodiment, the upper carrier belt, thick lithium strip and lower carrier belt pass through the gap between the third calendering composite roller and the fourth calendering composite roller, and the upper carrier belt, thick lithium strip and lower carrier belt are calendered, composited and thinned by the third calendering composite roller and the fourth calendering composite roller.
[0032] Reference Figure 3 , Figure 3This is a schematic diagram of Embodiment 3 of the present technical solution. In this embodiment, a suitable number of guide rollers are set between each module as needed. During application, the substrate unwinding module 11 is used to unwind the thick lithium strip, the upper carrier unwinding module 21 and the lower carrier unwinding module 31 are used to unwind the upper carrier belt and the lower carrier belt, respectively. The upper carrier belt is a single-sided lithium-coated PET belt, and the lower carrier belt is a pure PET belt. The thick lithium strip, the upper carrier belt and the lower carrier belt pass through the four-roll calendering composite module 4. The calendering composite rollers in the four-roll calendering composite module 4 calender and composite the thick lithium strip, the upper carrier belt and the lower carrier belt. In this calendering composite process, the upper carrier belt composites its surface-covering lithium layer onto the upper surface of the thick lithium strip, simultaneously thinning the thick lithium strip, so that the lithium strip can obtain a higher areal density. In this embodiment, the four-roll calendering composite module 4 uses its first calendering composite roller group for calendering composite operation. During the calendering composite process, the four-roll calendering composite module 4 does not need to stop, which can improve efficiency. After the thick lithium strip, upper carrier belt, and lower carrier belt pass through the four-roll calendering composite module 4, the upper carrier belt waste film (PET film) is wound up by the upper carrier belt waste film winding module 22. The lower carrier belt waste film winding module 32 is not in operation. After calendering and composite by the four-roll calendering composite module 4, the thick lithium strip is thinned and composited with the lower carrier belt to form a composite strip. Further, the composite strip of the thin lithium strip and the lower carrier belt passes through the slitting module 5 and is slit. The slit composite strip then passes through the peeling module 6, where the peeling module 6 peels off the lower carrier belt from the composite strip. After the lower carrier belt is peeled off the thin lithium strip, it is wound up by the lower carrier belt winding module 8. After the thin lithium strip is peeled off, the thin lithium strip is shaped by the shaping module 7 and then wound up by the lower carrier belt waste film winding module 32. In this embodiment, the upper carrier belt, the thick lithium belt, and the lower carrier belt pass through the gap between the first calendering composite roller and the second calendering composite roller, and the upper carrier belt, the thick lithium belt, and the lower carrier belt are calendered and thinned by the first calendering composite roller and the second calendering composite roller.
[0033] Reference Figure 1Along the lithium strip's travel path, a lithium strip unwinding tension roller module 13 is provided between the substrate unwinding module 11 and the four-roll calendering composite module 4, and a lithium strip winding tension roller module 14 is provided between the shaping module 7 and the lithium strip winding module 12; along the upper carrier belt's travel path, an upper carrier belt unwinding tension roller module 23 is provided between the upper carrier belt unwinding module 21 and the four-roll calendering composite module 4, and a lithium strip winding tension roller module 14 is provided between the four-roll calendering composite module 4 and the upper carrier belt waste film winding module 12. A loading belt waste film take-up tension roller module 24 is provided between the winding modules 22; along the belt travel path, a loading belt unwinding tension roller module 33 is provided between the loading belt unwinding module 31 and the four-roll calendering composite module 4, and a loading belt waste film take-up tension roller module 34 is provided between the four-roll calendering composite module 4 and the loading belt waste film take-up module 32; a loading belt take-up tension roller module 81 is provided between the peeling module 6 and the loading belt take-up module 8. Each tension roller module provides tension control and feedback for the unwinding and take-up processes, facilitating closed-loop control of the entire process.
[0034] Reference Figure 4-6 The peeling module 6 includes a mounting base plate 61 and side mounting plates 62 disposed on both sides of the mounting base plate 61. The side mounting plates 62 have two pieces, and a porous vacuum adsorption roller 63 is disposed between the two side mounting plates 62. The mounting base plate 61 is also provided with a sliding mounting seat 64. The sliding mounting seat 64 is hinged to a swing mounting plate 65. A closing roller 66 is disposed at the free end of the swing mounting plate 65. A closing roller swing cylinder 67 is hinged to the side mounting plate 62. The output end of the closing roller swing cylinder 67 is hinged to the swing mounting plate 65 and can drive the swing mounting plate 65 to rotate around its hinge axis to synchronously drive the closing roller 66 to move closer to or away from the porous vacuum adsorption roller 63. The composite lithium strip that needs to be peeled passes through the gap between the closing roller 66 and the porous vacuum adsorption roller 63. Specifically, the porous vacuum adsorption roller 63 includes an outer shell and a unidirectional negative pressure chamber disposed inside the outer shell. Negative pressure holes are uniformly formed on the outer shell, and the unidirectional negative pressure chamber is connected to an external negative pressure source. In application, the composite lithium strip passes through the gap between the porous vacuum adsorption roller 63 and the connecting roller 66. During the process of the composite lithium strip passing through the gap between the porous vacuum adsorption roller 63 and the connecting roller 66, the porous vacuum adsorption roller 63 adsorbs the upper carrier strip and simultaneously peels it off from the lithium strip surface. The gap between the porous vacuum adsorption roller 63 and the connecting roller 66 can be adjusted by the connecting roller swing cylinder 67 to achieve the optimal peeling effect.
[0035] Reference Figure 4-6The sliding mounting base 64 is mounted on the mounting base 61 via a sliding guide device. The sliding mounting base 64 is equipped with a position adjustment device 681 and a position locking device 682. A scale device 69 is provided on the sliding guide device or the mounting base 61, and a scale indicator needle that cooperates with the scale device 69 is provided on the sliding mounting base 64. The position adjustment device 681 adjusts the position of the sliding mounting base 64, thereby adjusting the closing roller 66 to the optimal position and improving processing quality. After the position is adjusted to the correct position, the position locking device 682 locks it in place. During position adjustment, the indicator needle and scale device 69 allow the operator to more intuitively and quickly adjust to the preset position.
[0036] Based on the above-described lithium strip rolling composite mechanism, this utility model also provides:
[0037] A lithium strip processing device, the lithium strip processing device including the lithium strip calendering composite mechanism.
[0038] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A lithium strip rolling composite mechanism, characterized in that: The system includes a substrate unwinding module (11), an upper carrier belt unwinding module (21), a lower carrier belt unwinding module (31), a four-roll calendering composite module (4), a slitting module (5), a peeling module (6), a shaping module (7), a lithium belt winding module (12), an upper carrier belt waste film winding module (22), a lower carrier belt waste film winding module (32), and a lower carrier belt winding module (8). The substrate unwinding module (11), the upper carrier belt unwinding module (21), and the lower carrier belt unwinding module (31) are... The winding module (31) is located on the first side of the four-roll calendering composite module (4). The substrate unwinding module (11) and the four-roll calendering composite module (4) form a first side path. The upper loading belt unwinding module (21) is located on the upper side of the first side path and forms a first unwinding belt with the four-roll calendering composite module (4). The lower loading belt unwinding module (31) is located on the lower side of the first side path and forms a first unwinding belt with the four-roll calendering composite module (4). The two unwinding belts, the slitting module (5), the peeling module (6), the shaping module (7), the lithium strip winding module (12), the upper load waste film winding module (22), the lower load waste film winding module (32), and the lower load winding module (8) are located on the second side of the four-roll calendering composite module (4). The four-roll calendering composite module (4) cooperates with the slitting module (5), the peeling module (6), the shaping module (7), and the lithium strip winding module (12) to form a shape. The upper loading belt waste film winding module (22) is located on the upper side of the second side belt and forms a first winding belt between it and the four-roll calendering composite module (4). The lower loading belt waste film winding module (32) is located on the lower side of the second side belt and forms a second winding belt between it and the four-roll calendering composite module (4). The lower loading belt winding module (8) is located on the lower side of the second side belt and forms a third winding belt between it and the peeling module (6).
2. The lithium strip rolling composite mechanism according to claim 1, characterized in that: The four-roll calendering composite module (4) includes a first calendering composite roll, a second calendering composite roll, a third calendering composite roll and a fourth calendering composite roll. The first calendering composite roll and the second calendering composite roll form a first calendering composite roll group, and the third calendering composite roll and the fourth calendering composite roll form a second calendering composite roll group. The roll spacing of the first calendering composite roll group and the second calendering composite roll group is adjustable.
3. The lithium strip rolling composite mechanism according to claim 1, characterized in that: Along the lithium strip's travel path, a lithium strip unwinding tension roller module (13) is provided between the substrate unwinding module (11) and the four-roll calendering composite module (4), and a lithium strip winding tension roller module (14) is provided between the shaping module (7) and the lithium strip winding module (12).
4. The lithium strip rolling composite mechanism according to claim 1, characterized in that: Along the belt travel path of the upper carrier belt, an upper carrier belt unwinding tension roller module (23) is provided between the upper carrier belt unwinding module (21) and the four-roll calendering composite module (4), and an upper carrier belt waste film winding tension roller module (24) is provided between the four-roll calendering composite module (4) and the upper carrier belt waste film winding module (22).
5. The lithium strip rolling composite mechanism according to claim 1, characterized in that: Along the tape travel path, a tape unwinding tension roller module (33) is provided between the tape unwinding module (31) and the four-roll calendering composite module (4), and a tape waste film winding tension roller module (34) is provided between the four-roll calendering composite module (4) and the tape waste film winding module (32).
6. The lithium strip rolling composite mechanism according to claim 1, characterized in that: A download tape winding tension roller module (81) is provided between the peeling module (6) and the download tape winding module (8).
7. A lithium strip rolling composite mechanism according to any one of claims 1-6, characterized in that: The stripping module (6) includes a mounting base plate (61) and side mounting plates (62) disposed on both sides of the mounting base plate (61). The side mounting plates (62) are two in number, with a porous vacuum adsorption roller (63) disposed between the two side mounting plates (62). A sliding mounting seat (64) is also disposed on the mounting base plate (61). A swing mounting plate (65) is hinged to the sliding mounting seat (64). A closing roller (63) is disposed at the free end of the swing mounting plate (65). 6) A roller swing cylinder (67) is hinged on the side mounting plate (62). The output end of the roller swing cylinder (67) is hinged to the swing mounting plate (65) and can drive the swing mounting plate (65) to rotate around its hinge axis to synchronously drive the roller (66) to move closer to or away from the porous vacuum adsorption roller (63). The composite lithium strip that needs to be peeled off passes through the gap between the roller (66) and the porous vacuum adsorption roller (63).
8. A lithium strip rolling composite mechanism according to claim 7, characterized in that: The porous vacuum adsorption roller (63) includes an outer shell and a one-way negative pressure cavity disposed inside the outer shell. Negative pressure holes are uniformly opened on the outer shell, and the one-way negative pressure cavity is connected to an external negative pressure source.
9. A lithium strip rolling composite mechanism according to claim 7, characterized in that: The sliding mounting base (64) is mounted on the mounting base plate (61) via a sliding guide device. The sliding mounting base (64) is provided with a position adjustment device (681) and a position locking device (682). The sliding guide device or the mounting base plate (61) is provided with a scale device (69). The sliding mounting base (64) is provided with a scale indicator needle that cooperates with the scale device (69).
10. A lithium strip processing apparatus, characterized in that: the lithium strip processing apparatus includes the lithium strip rolling composite mechanism as described in any one of claims 1-9.