A kind of cutting die edge trimming device based on power battery pole piece processing

Abstract

The application relates to the technical field of battery pole piece punching technology, and discloses a punching die edge cutting device based on power battery pole piece processing, which comprises a fixing assembly, a punching assembly, a lifting assembly, a surplus material collecting assembly and a constraint assembly. The fixing assembly fixes the battery pole piece and guides the movement of the battery pole piece. The punching assembly performs a punching operation on the battery pole piece. The elastic pressing rotating roller of the constraint assembly is attached to the pole piece, the deviation and shaking after punching are prevented, the conveying stability is ensured, the punching assembly is double-positioned through a positioning sleeve, and the edge cutting precision consistency is improved. The surplus material collecting assembly realizes the separation and collection of finished pole pieces and corner surplus materials, avoids mixing and waste, the lifting assembly can accurately adjust the constraint height, adapts to pole piece processing of different thicknesses and material replacement and cleaning requirements, is convenient to operate, greatly improves the production efficiency, ensures the regularity of the pole piece edges, and meets the high-precision processing requirements of the power battery pole pieces.

Description

Technical Field

[0001] This invention relates to the field of battery electrode punching technology, and more specifically to a punching die edge trimming device based on power battery electrode processing. Background Technology

[0002] As a core component of new energy batteries, the edge precision and regularity of power battery electrodes directly affect the battery's energy density, cycle life, and safety. Punching and trimming are critical processes in electrode manufacturing, requiring precise punching and efficient separation and collection of the punched electrodes and residual material. With the increasing demands on power battery performance from new energy vehicles, energy storage devices, and other fields, the requirements for conveying stability and collection efficiency in electrode punching are becoming increasingly stringent. In particular, it is necessary to solve problems such as electrode misalignment after punching, disordered conveying, and inconvenient residual material recovery.

[0003] However, existing power battery electrode punching and trimming devices are unstable in conveying the electrodes after punching. Most existing devices use a segmented conveying method that connects a rigid base and a conveyor belt. During the process of transferring the electrode from the base to the conveyor belt after punching, it is easy to deviate, shake, or even deviate from the conveying path due to uneven force and lack of effective constraints. This leads to difficulties in subsequent collection and damage to the electrode edges, thus affecting the consistency of punching accuracy. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a punching die trimming device based on the processing of power battery electrode sheets, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a punching die trimming device for processing power battery electrode sheets, comprising: a fixing component, a punching component, a lifting component, a scrap collection component, and a constraint component; wherein,

[0007] The fixing component secures the battery electrode and guides its movement;

[0008] The punching assembly performs the punching operation on the battery electrode sheets;

[0009] The lifting component drives the lifting and lowering movement of the constraint component to adjust the height;

[0010] The waste material collection component collects the punched battery electrode sheets and punching waste;

[0011] The constraint component constrains the punched battery electrodes to prevent them from shifting.

[0012] It also includes, wherein the fixing assembly comprises a fixing mounting plate, a battery electrode mounting rod, a conveying constraint plate, a fixing connecting frame, a fixing collection box, a limiting rotating roller, a fixing operating table, and a power battery electrode. The battery electrode mounting rod is fixedly installed between two fixing mounting plates, and multiple limiting rotating rollers are movably installed between two fixing mounting plates. A conveying constraint plate is fixedly provided on one side of the fixing mounting plate, and a fixing connecting frame is fixedly provided on the lower surface of the two conveying constraint plates. The fixing collection box is movably disposed on the upper surface of the fixing connecting frame. The fixing operating table is fixedly installed on the side of the fixing mounting plate away from the conveying constraint plate, and one end of the power battery electrode is movably installed on the battery electrode mounting rod.

[0013] It also includes a punching assembly comprising a punching power box, a punching support column, a punching fixed seat, a punching telescopic column, a positioning fixed block, a punching die, and a positioning sleeve. The punching fixed seat is fixedly provided on the inner side of the two conveying constraint plates. The punching support column is fixedly provided on the upper surface of the punching fixed seat. The punching power box is fixedly provided on the upper surface of the two punching support columns. The positioning fixed block is fixedly provided between the two punching support columns. The punching telescopic column is movably sleeved on the inner side of the positioning fixed block.

[0014] It also includes a punching power box fixedly mounted on the upper surface of the punching support column, one end of the punching telescopic column being movably inserted into the inner side of the punching power box, the other end of the punching telescopic column being fixedly connected to the punching die, the punching die being movably mounted between the positioning fixing block and the punching fixing seat, a positioning sleeve being fixedly mounted on the upper surface of the punching fixing seat, and one end of the lower surface of the punching die being movably inserted into the inner side of the corresponding positioning sleeve.

[0015] It also includes a lifting assembly comprising a fixed support plate, a servo motor, a support limiting plate, a limiting gear, a driven connector, an inner bearing ring, and an outer bearing ring. A fixed support plate and a support limiting plate are fixedly mounted on one side of the punching power box. A servo motor is fixedly mounted on the upper surface of the support limiting plate. A limiting gear is fixedly mounted on one end of the servo motor. An inner bearing ring is fixedly mounted on the upper surface of the fixed support plate. An outer bearing ring is sleeved on the outer side of the inner bearing ring. A driven connector is fixedly mounted on the upper surface of the outer bearing ring. The outer surface of the driven connector meshes with the support limiting plate.

[0016] It also includes the following: the waste material collection assembly includes a collection support block, a reducer, a power motor, a collection rotating rod, a conveyor belt, and a power transmission rod. The collection support block is fixedly provided on one side of the conveying constraint plate, the reducer is fixedly provided on the upper surface of the collection support block, the power motor is fixedly provided on the side of the reducer away from the collection support block, the collection rotating rod is fixedly installed on the reducer, the other end of the power battery electrode is fixedly installed on the collection rotating rod, and multiple power transmission rods are movably provided inside the conveying constraint plate. The conveyor belt is sleeved on the multiple power transmission rods.

[0017] The constraint assembly also includes a constraint support frame, a fixed lead screw, a positioning connecting rod, a fixed bending plate, a constraint sleeve, a pressing constraint block, a constraint spring, and a pressing rotating roller. The upper surface of the constraint support frame is fixedly provided with a fixed lead screw and two positioning connecting rods. The fixed lead screw movably passes through the inner ring of the bearing and engages with the driven connecting member. The positioning connecting rod is movably inserted into the fixed support plate. The lower surface of the constraint support frame is fixedly provided with a fixed bending plate, and each fixed bending plate has two constraint sleeves fixedly provided on its lower surface.

[0018] It also includes that one end of the constraint spring is movably inserted into the inner side of the constraint sleeve, a pressing constraint block is movably provided between the constraint spring and the constraint sleeve, each pressing constraint block is sleeved on the corresponding constraint sleeve, and multiple pressing rotating rollers are movably provided between the pressing constraint blocks, and the pressing rotating rollers are in contact with the upper surface of the power battery electrode.

[0019] The technical solution provided by this invention has the following advantages compared with the prior art:

[0020] This invention uses an elastically pressing rotating roller of a constraint component to adhere the electrode sheet, preventing offset and vibration after punching and ensuring conveying stability. The punching component uses a positioning sleeve for double positioning, improving the consistency of cutting edge accuracy. The waste material collection component separates and collects finished electrode sheets from scrap materials, avoiding mixing and waste. The lifting component can precisely adjust the constraint height to adapt to the processing, material changing, and cleaning needs of electrode sheets of different thicknesses. It is easy to operate, greatly improves production efficiency, ensures the regularity of electrode sheet edges, and meets the high-precision processing requirements of power battery electrode sheets. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the residual material collection component structure in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the side cross-sectional structure in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the front structure in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the front cross-sectional structure in an embodiment of the present invention;

[0027] Figure 6 This is a partial structural schematic diagram of an embodiment of the present invention.

[0028] The labels in the diagram represent: 1. Fixed assembly; 11. Fixed mounting plate; 12. Battery electrode mounting rod; 13. Conveying constraint plate; 14. Fixed connecting frame; 15. Fixed collection box; 16. Limiting rotating roller; 17. Fixed operating table; 18. Power battery electrode; 2. Punching assembly; 21. Punching power box; 22. Punching support column; 23. Punching fixing seat; 24. Punching telescopic column; 25. Positioning fixing block; 26. Punching die; 27. Positioning sleeve; 3. Lifting assembly; 31. Fixed support plate; 32. Servo 33. Motor; 34. Support limiting plate; 35. Limiting gear; 36. Driven connecting piece; 37. Inner ring of bearing; 48. Outer ring of bearing; 49. Scrap material collection assembly; 40. Collection support block; 41. Reducer; 42. Power motor; 43. Collection rotating rod; 44. Conveyor belt; 45. Power transmission rod; 6. Constraint assembly; 51. Constraint support frame; 52. Fixed lead screw; 53. Positioning connecting rod; 54. Fixed bending plate; 55. Constraint sleeve; 56. Pressing constraint block; 57. Constraint spring; 58. Pressing rotating roller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to embodiments.

[0031] Example:

[0032] Please see Figures 1-4 The present invention provides a technical solution: a punching die trimming device based on power battery electrode processing, comprising: a fixing component 1, a punching component 2, a lifting component 3, a scrap material collection component 4, and a constraint component 5. The fixing component 1 fixes the battery electrode and guides its movement, the punching component 2 performs the punching operation of the battery electrode, the lifting component 3 drives the lifting movement of the constraint component 5 to adjust the height, the scrap material collection component 4 collects the punched battery electrode and punching scrap, and the constraint component 5 constrains the punched battery electrode to prevent displacement.

[0033] The fixing assembly 1 includes a fixing mounting plate 11, a battery electrode mounting rod 12, a conveying constraint plate 13, a fixing connecting frame 14, a fixing collection box 15, a limiting rotating roller 16, a fixing operating table 17, and a power battery electrode 18. The battery electrode mounting rod 12 is fixedly installed between two fixing mounting plates 11, and multiple limiting rotating rollers 16 are movably installed between two fixing mounting plates 11. A conveying constraint plate 13 is fixedly provided on one side of the fixing mounting plate 11, and a fixing connecting frame 14 is fixedly provided on the lower surface of the two conveying constraint plates 13. The fixing collection box 15 is movably arranged on the upper surface of the fixing connecting frame 14. The fixing operating table 17 is fixedly installed on the side of the fixing mounting plate 11 away from the conveying constraint plate 13. One end of the power battery electrode 18 is movably installed on the battery electrode mounting rod 12.

[0034] In specific implementation: the fixed mounting plate 11 serves as the core support frame, fixing the battery electrode mounting rod 12 between the two plates. The rolled power battery electrode 18 can be sleeved on the battery electrode mounting rod 12 for convenient installation. Multiple limiting rotating rollers 16 are evenly distributed between the two fixed mounting plates 11. The power battery electrode 18 passes around each limiting rotating roller 16 in sequence. The rolling characteristics of the roller shaft are used to straighten and flatten the electrode, eliminating wrinkles generated during transportation or storage, laying the foundation for subsequent precise punching. The conveying constraint plate 13 is fixed to one side of the fixed mounting plate 11, forming a lateral limit for electrode conveying, preventing the electrode from shifting laterally during conveying, and further ensuring feeding accuracy.

[0035] Please see Figures 3-5 The present invention provides a technical solution: the punching assembly 2 includes a punching power box 21, a punching support column 22, a punching fixed seat 23, a punching telescopic column 24, a positioning fixed block 25, a punching die 26 and a positioning sleeve 27. The punching fixed seat 23 is fixedly provided on the inner side of the two conveying constraint plates 13. The punching support column 22 is fixedly provided on the upper surface of the punching fixed seat 23. The punching power box 21 is fixedly provided on the upper surface of the two punching support columns 22. The positioning fixed block 25 is fixedly provided between the two punching support columns 22. The punching telescopic column 24 is movably sleeved on the inner side of the positioning fixed block 25.

[0036] A punching power box 21 is fixedly provided on the upper surface of the punching support column 22. One end of the punching telescopic column 24 is movably inserted into the inner side of the punching power box 21. The other end of the punching telescopic column 24 is fixedly connected to the punching die 26. The punching die 26 is movably disposed between the positioning block 25 and the punching fixed seat 23. A positioning sleeve 27 is fixedly provided on the upper surface of the punching fixed seat 23. One end of the lower surface of the punching die 26 is movably inserted into the inner side of the corresponding positioning sleeve 27.

[0037] The lifting assembly 3 includes a fixed support plate 31, a servo motor 32, a support limiting plate 33, a limiting gear 34, a driven connector 35, an inner bearing ring 36, and an outer bearing ring 37. The fixed support plate 31 and the support limiting plate 33 are fixedly installed on one side of the punching power box 21. The servo motor 32 is fixedly installed on the upper surface of the support limiting plate 33. The limiting gear 34 is fixedly installed at one end of the servo motor 32. The inner bearing ring 36 is fixedly installed on the upper surface of the fixed support plate 31. The outer bearing ring 37 is sleeved on the outside of the inner bearing ring 36. The driven connector 35 is fixedly installed on the upper surface of the outer bearing ring 37. The outer surface of the driven connector 35 meshes with the support limiting plate 33.

[0038] In practice: the punching assembly 2 achieves high-precision edge cutting of the electrode sheet through the coordinated action of power drive and positioning guide; the punching support column 22 is fixed on the upper surface of the punching fixed seat 23, and the top supports the punching power box 21, forming a stable punching power structure; the positioning fixed block 25 is fixed between the two punching support columns 22, providing guiding constraints for the punching telescopic column 24;

[0039] After the punching power box 21 is started, it drives the punching telescopic column 24 to extend and retract along the inner side of the positioning and fixing block 25, which drives the punching die 26 fixed at the lower end to move synchronously. During punching, the punching die 26 is attached to the power battery electrode 18 downwards, and works with the punching fixing seat 23 to complete the edge cutting operation. The positioning sleeve 27 on the upper surface of the punching fixing seat 23 is precisely inserted into the protruding structure on the lower surface of the punching die 26 to form a double positioning, which prevents the punching die 26 from shifting and ensures that the edge cutting dimension accuracy is consistent.

[0040] Please see Figures 1-6 The present invention provides a technical solution: the waste material collection assembly 4 includes a collection support block 41, a reducer 42, a power motor 43, a collection rotating rod 44, a conveyor belt 45, and a power transmission rod 46. The collection support block 41 is fixedly provided on one side of the conveying constraint plate 13, the reducer 42 is fixedly provided on the upper surface of the collection support block 41, the power motor 43 is fixedly provided on the side of the reducer 42 away from the collection support block 41, the collection rotating rod 44 is fixedly installed on the reducer 42, the other end of the power battery electrode 18 is fixedly installed on the collection rotating rod 44, and a plurality of power transmission rods 46 are movably provided on the inner side of the conveying constraint plate 13, and the conveyor belt 45 is sleeved on the plurality of power transmission rods 46.

[0041] The constraint assembly 5 includes a constraint support frame 51, a fixed screw 52, ​​a positioning connecting rod 53, a fixed bending plate 54, a constraint sleeve 55, a pressing constraint block 56, a constraint spring 57, and a pressing rotating roller 58. The upper surface of the constraint support frame 51 is fixedly provided with a fixed screw 52 and two positioning connecting rods 53. The fixed screw 52 movably passes through the inner ring 36 of the bearing and engages with the driven connecting piece 35. The positioning connecting rods 53 are movably inserted into the fixed support plate 31. The lower surface of the constraint support frame 51 is fixedly provided with a fixed bending plate 54, and two constraint sleeves 55 are fixedly provided on the lower surface of each fixed bending plate 54.

[0042] One end of the constraint spring 57 is movably inserted into the inner side of the constraint sleeve 55. A pressing constraint block 56 is movably provided between the constraint spring 57 and the constraint sleeve 55. Each pressing constraint block 56 is sleeved on the corresponding constraint sleeve 55. Multiple pressing rotating rollers 58 are movably provided between the pressing constraint blocks 56. The pressing rotating rollers 58 are in contact with the upper surface of the power battery electrode 18.

[0043] In practice: the rolled power battery electrode 18 is placed on the battery electrode mounting rod 12, the free end of the electrode is pulled out, and it is straightened and flattened by passing through each limiting rotating roller 16 in sequence. Then it passes through the gap between the punching fixing seat 23 and the punching die 26, and finally it is fixed on the collecting rotating rod 44. According to the thickness of the power battery electrode 18, the servo motor 32 is started to drive the constraint component 5 to rise and fall, so that the pressing rotating roller 58 is in contact with the upper surface of the electrode and maintains an appropriate pressing force.

[0044] The power motor 43 of the punching power box 21 and the waste material collection component 4 are started simultaneously; the power motor 43 drives the collection rotating rod 44 to rotate, which drives the power battery electrode 18 to move continuously and smoothly. The punching power box 21 drives the punching telescopic column 24 to extend and retract periodically, which drives the punching die 26 to move up and down. When the electrode moves to the punching position, the punching die 26 punches downward, and works with the punching fixed seat 23 to complete the cutting edge. During the punching process, the positioning sleeve 27 ensures the punching accuracy. During the continuous movement of the punched electrode, the pressing rotating roller 58 always adheres to the surface of the electrode, limiting the electrode offset and shaking, and ensuring that the electrode is conveyed along the preset path.

[0045] After punching, the finished electrode sheets move onto the conveyor belt 45 and enter the fixed collection box 15 as the conveyor belt rotates, completing the collection of finished products. The scrap material is continuously wrapped and collected by the collecting rotating rod 44 to avoid scattering and polluting the working environment. The collecting rotating rod 44 continues to rotate, and the coiled electrode sheets on the battery electrode sheet mounting rod 12 are continuously released until the entire coil of electrode sheets is processed. After the electrode sheets are processed, all power equipment is turned off, the punching telescopic column 24 drives the punching die 26 to reset, the collecting rotating rod 44 stops rotating, the servo motor 32 is started, and the constraint component 5 is driven to rise upward, leaving enough space to remove the scrap material coil on the collecting rotating rod 44 or to put in a new coil of electrode sheets. If cleaning is required, after the constraint component 5 is raised, the debris on the punching fixed seat 23, the punching die 26 and the conveying path can be cleaned. After replacing the new electrode sheet, the constraint component 5 is adjusted to the appropriate height, and the above operation process is repeated.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A punching die trimming device for processing power battery electrode sheets, characterized in that, include: Fixed assembly (1), punching assembly (2), lifting assembly (3), scrap collection assembly (4), and constraint assembly (5): among which, The fixing component (1) fixes the battery electrode and guides its movement; The punching assembly (2) performs the punching operation on the battery electrode sheets; The lifting component (3) drives the lifting movement of the constraint component (5) to adjust the height; The waste material collection component (4) collects the punched battery electrode sheets and punching waste; The constraint component (5) constrains the punched battery electrode to prevent it from shifting.

2. The edge trimming device for punching dies based on power battery electrode processing according to claim 1, characterized in that: The fixing assembly (1) includes a fixing mounting plate (11), a battery electrode mounting rod (12), a conveying constraint plate (13), a fixing connecting frame (14), a fixing collection box (15), a limiting rotating roller (16), a fixing operating table (17), and a power battery electrode (18). The battery electrode mounting rod (12) is fixedly installed between two fixing mounting plates (11), and multiple limiting rotating rollers (16) are movably installed between two fixing mounting plates (11). A conveying constraint plate (13) is fixedly provided on one side of the fixing mounting plate (11), and a fixing connecting frame (14) is fixedly provided on the lower surface of the two conveying constraint plates (13). The fixing collection box (15) is movably arranged on the upper surface of the fixing connecting frame (14). The fixing operating table (17) is fixedly installed on the side of the fixing mounting plate (11) away from the conveying constraint plate (13). One end of the power battery electrode (18) is movably installed on the battery electrode mounting rod (12).

3. The edge trimming device for punching dies based on power battery electrode processing according to claim 2, characterized in that: The punching assembly (2) includes a punching power box (21), a punching support column (22), a punching fixing seat (23), a punching telescopic column (24), a positioning fixing block (25), a punching die (26), and a positioning sleeve (27). The punching fixing seat (23) is fixedly provided on the inner side of the two conveying constraint plates (13). The punching support column (22) is fixedly provided on the upper surface of the punching fixing seat (23). The punching power box (21) is fixedly provided on the upper surface of the two punching support columns (22). The positioning fixing block (25) is fixedly provided between the two punching support columns (22). The punching telescopic column (24) is movably sleeved on the inner side of the positioning fixing block (25).

4. The edge trimming device for punching dies based on power battery electrode processing according to claim 3, characterized in that: The upper surface of the punching support column (22) is fixedly provided with a punching power box (21). One end of the punching telescopic column (24) is movably inserted into the inner side of the punching power box (21). The other end of the punching telescopic column (24) is fixedly connected to the punching die (26). The punching die (26) is movably disposed between the positioning fixing block (25) and the punching fixing seat (23). The upper surface of the punching fixing seat (23) is fixedly provided with a positioning sleeve (27). One end of the lower surface of the punching die (26) is movably inserted into the inner side of the corresponding positioning sleeve (27).

5. The edge trimming device for punching dies based on power battery electrode processing according to claim 4, characterized in that: The lifting assembly (3) includes a fixed support plate (31), a servo motor (32), a support limiting plate (33), a limiting gear (34), a driven connector (35), an inner bearing ring (36), and an outer bearing ring (37). The fixed support plate (31) and the support limiting plate (33) are fixedly provided on one side of the punching power box (21). The servo motor (32) is fixedly provided on the upper surface of the support limiting plate (33). The limiting gear (34) is fixedly provided at one end of the servo motor (32). The inner bearing ring (36) is fixedly provided on the upper surface of the fixed support plate (31). The outer bearing ring (37) is sleeved on the outer side of the inner bearing ring (36). The driven connector (35) is fixedly provided on the upper surface of the outer bearing ring (37). The outer surface of the driven connector (35) meshes with the support limiting plate (33).

6. The edge trimming device for punching dies based on power battery electrode processing according to claim 5, characterized in that: The waste material collection assembly (4) includes a collection support block (41), a reducer (42), a power motor (43), a collection rotating rod (44), a conveyor belt (45), and a power transmission rod (46). The collection support block (41) is fixedly provided on one side of the conveying constraint plate (13). The reducer (42) is fixedly provided on the upper surface of the collection support block (41). The power motor (43) is fixedly provided on the side of the reducer (42) away from the collection support block (41). The collection rotating rod (44) is fixedly installed on the reducer (42). The other end of the power battery electrode (18) is fixedly installed on the collection rotating rod (44). Multiple power transmission rods (46) are movably provided inside the conveying constraint plate (13). The conveyor belt (45) is sleeved on the multiple power transmission rods (46).

7. The edge trimming device for punching dies based on power battery electrode processing according to claim 6, characterized in that: The constraint assembly (5) includes a constraint support frame (51), a fixed lead screw (52), a positioning connecting rod (53), a fixed bending plate (54), a constraint sleeve (55), a pressing constraint block (56), a constraint spring (57), and a pressing rotating roller (58). The upper surface of the constraint support frame (51) is fixedly provided with a fixed lead screw (52) and two positioning connecting rods (53). The fixed lead screw (52) passes through the inner ring (36) of the bearing and engages with the driven connecting piece (35). The positioning connecting rod (53) is movably inserted into the fixed support plate (31). The lower surface of the constraint support frame (51) is fixedly provided with a fixed bending plate (54), and the lower surface of each fixed bending plate (54) is fixedly provided with two constraint sleeves (55).

8. The edge trimming device for punching dies based on power battery electrode processing according to claim 7, characterized in that: One end of the constraint spring (57) is movably inserted into the inner side of the constraint sleeve (55). A pressing constraint block (56) is movably provided between the constraint spring (57) and the constraint sleeve (55). Each pressing constraint block (56) is sleeved on the corresponding constraint sleeve (55). Multiple pressing rotating rollers (58) are movably provided between the pressing constraint blocks (56). The pressing rotating rollers (58) are in contact with the upper surface of the power battery electrode (18).

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