Electrode plate slitting equipment for lithium battery production

Abstract

The invention relates to the technical field of lithium battery production, in particular to electrode plate slitting equipment for lithium battery production, which comprises a fixed rack, support frames are fixed on two sides of one end of the fixed rack, a feeding roller is detachably mounted at a position between the two support frames, an electrode foil is wound on the outer side of the feeding roller, and the electrode foil is wound on the outer side of the fixed rack. And the top end of the middle of the inner side of the fixed rack is rotationally connected with a material cutting roller, the top end of the material cutting roller is provided with a slitting assembly used for slitting the electrode foil, and a tensioning assembly is arranged at the position between the feeding roller and the material cutting roller and used for conducting tensioning conveying on the electrode foil. Through the structural design of the slitting assembly, when the cutting width needs to be adjusted according to actual use requirements, the device does not need to be disassembled manually, and the cutting width can be adjusted through the slitting assembly, so that the slitting working efficiency is effectively improved, and meanwhile, the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and more specifically, to a slitting device for electrode sheets used in lithium battery production. Background Art

[0002] A lithium battery is a battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution, which has characteristics such as high energy, long life, low consumption, pollution-free, and no memory effect. The electrode sheet is an important component of the lithium battery.

[0003] Currently, in the production and processing of lithium batteries, the positive electrode sheet and the negative electrode sheet need to be prepared first. The specific process is as follows: corresponding positive electrode batching and negative electrode batching are carried out, and then the positive electrode batching and the negative electrode batching are coated on the corresponding metal electrode foils on an electrode coater to obtain the positive electrode sheet and the negative electrode sheet; after the electrode sheets are prepared, they need to be slit into required strip-shaped bodies on a slitting device.

[0004] In actual use of the prior art, since most of its cutting methods are to cut the electrode sheet through the slitting knives installed on the rotating shaft, but when it is necessary to cut electrode sheets with different widths, the rotating shaft needs to be disassembled to adjust the distance between the slitting knives. However, this method is inefficient, affects the production efficiency, and increases the labor intensity.

[0005] Based on this, the present invention discloses a slitting device for electrode sheets used in lithium battery production. Summary of the Invention

[0006] To solve the problem proposed in the background art that in actual use of the prior art, since most of its cutting methods are to cut the electrode sheet through the slitting knives installed on the rotating shaft, but when it is necessary to cut electrode sheets with different widths, the rotating shaft needs to be disassembled to adjust the distance between the slitting knives more, however, this method is inefficient, affects the production efficiency, and increases the labor intensity, the present invention provides a slitting device for electrode sheets used in lithium battery production, which includes a fixed frame. On both sides at one end of the fixed frame, support frames are fixedly installed. A loading roller is detachably installed at the position between the two support frames. An electrode foil is wound around the outside of the loading roller. The middle top end inside the fixed frame is rotatably connected with a cutting roller. A slitting assembly is arranged at the top of the cutting roller for slitting the electrode foil. A tensioning assembly is arranged at the position between the loading roller and the cutting roller for tensioning and transporting the electrode foil. A winding assembly is arranged at the position of the fixed frame far from the loading roller and corresponding to the cutting roller for winding the cut electrode foil.

[0007] As a further improvement of the technical solution, the tensioning assembly includes two guide rollers, which are symmetrically arranged at one end close to the loading roller inside the fixed frame. The guide rollers are rotatably connected to the fixed frame. The upper and lower ends of the electrode foil are respectively attached to the upper and lower ends of the two guide rollers. A first tensioning roller is rotatably connected to the inside of the fixed frame at a position close to the cutting roller. The top end of the electrode foil is attached to the lower end surface of the first tensioning roller. A second tensioning roller is rotatably connected to the position close to the cutting roller at the end of the fixed frame far from the loading roller. The lower end surface of the second tensioning roller is attached to the top end of the cut electrode foil.

[0008] As a further improvement of the technical solution, the slitting assembly includes a guide rod, which is fixed to the inner top of the fixed frame and located above the cutting roller. A plurality of fixed seats are evenly slidably connected to the outside of the guide rod. A fixed rod is fixed to the top end of the fixed seat. A connecting seat is arranged at the lower end of the fixed seat. A cutting motor is fixed to one side of the connecting seat. A cutting knife is fixed to the output end of the cutting motor. The output end of the cutting motor is rotatably connected to the connecting seat. An adjusting assembly is arranged above the fixed seat.

[0009] As a further improvement of the technical solution, the adjusting assembly includes an adjusting plate, which is arranged above the guide rod. Fixing plates are fixed to both ends of the adjusting plate. A plurality of adjusting grooves are evenly formed in the inner side of the adjusting plate. The plurality of fixed rods are respectively slidably connected to the adjusting plate through the corresponding adjusting grooves. A limiting plate is fixed to the top end of the fixed rod. Driving assemblies are arranged at both sides of the fixed frame corresponding to the fixing plates.

[0010] As a further improvement of the technical solution, the driving assembly includes a moving seat, which is arranged at the inner side of both sides of the fixed frame. The moving seat is slidably connected to the fixed frame. The moving seat is fixed to the fixing plate. Adjusting motors are fixed to the inner sides of both sides of the fixed frame corresponding to the moving seat. An adjusting screw is fixed to the output end of the adjusting motor. The adjusting screw is threadedly connected to the moving seat. A limiting screw is slidably connected to the inner top of the moving seat. The limiting screw is fixed to the fixed frame.

[0011] As a further improvement of the technical solution, a plug-in block is fixed to the top end of the connecting seat. A connecting groove is formed at the lower end of the fixed seat corresponding to the plug-in block. The plug-in block is plugged into the fixed seat through the connecting groove. A connecting bolt is arranged between the plug-in block and the fixed seat. The plug-in block and the fixed seat are fixed by the connecting bolt.

[0012] As a further improvement of the technical solution, the winding assembly includes a second winding roller, which is arranged at the top end of the fixed frame away from the feeding roller. The second winding roller is rotatably connected to the fixed frame. A plurality of partition plates are evenly arranged on the outer side of the second winding roller, and the partition plates are slidably connected to the second winding roller. A first winding roller is arranged below the second winding roller and close to the cutting roller, and the first winding roller is rotatably connected to the fixed frame.

[0013] As a further improvement of the technical solution, a connecting rod is fixed to the top end of the limiting plate, a positioning frame is fixed to the end of the connecting rod away from the limiting plate, positioning rods are fixed to the inner sides of both sides of the positioning frame, and positioning rollers are fixed to one ends of the two positioning rods close to each other. The positioning rollers are in rolling connection with the partition plates.

[0014] As a further improvement of the technical solution, a fixed sliding rod is fixed to the top end of the fixed frame away from the feeding roller. A moving block is slidably connected to the outer side of the fixed sliding rod. Two connecting frames are rotatably connected to both sides of the lower end of the moving block. A torsion spring is arranged at the position where the connecting frame is connected to the moving block. A pressing roller is arranged at the position between one ends of the two connecting frames away from the moving block, and the pressing roller is rotatably connected to the connecting frame.

[0015] As a further improvement of the technical solution, a spring telescopic rod is fixed to the side of the moving block close to the connecting rod. Fixed rings are fixed to the telescopic ends of both ends of the spring telescopic rod. The fixed rings are sleeved on the outer side of the connecting rod, and the fixed rings are fixedly connected to the connecting rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the electrode sheet slitting equipment for lithium battery production, through the structural design of the slitting assembly, when it is necessary to adjust the cutting width according to actual use requirements, it is not necessary to manually disassemble the device. The cutting width can be adjusted through the slitting assembly, thereby effectively improving the slitting work efficiency and reducing the labor intensity of workers.

[0017] 2. In the electrode sheet slitting equipment for lithium battery production, through the structural design of the winding assembly, after cutting, it is possible to cooperate with the slitting assembly to wind the electrode sheet with adjusted width in real time, avoiding uneven winding during the winding process and affecting subsequent processing procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the guiding roller and the first tensioning roller of the present invention; Figure 3Schematic diagram of the winding component of the present invention; Figure 4 Schematic diagram of the slitting component of the present invention; Figure 5 Schematic diagram of the connecting bolt and the plug-in block of the present invention; Figure 6 Schematic diagram of the adjusting plate of the present invention; Figure 7 Schematic diagram of the partition plate of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part A in Figure 9 Schematic diagram of the fixed slide bar and the moving block of the present invention; Figure 10 Schematic diagram of the pressing roller and the spring telescopic rod of the present invention.

[0019] The meanings of each label in the figure are as follows: 1. Fixed frame; 2. Loading roller; 3. Support frame; 4. Electrode foil; 5. Guide roller; 6. First tension roller; 7. Cutting roller; 8. First winding roller; 9. Second tension roller; 10. Second winding roller; 11. Adjusting plate; 12. Fixed plate; 13. Adjusting groove; 14. Fixed seat; 15. Connecting seat; 16. Cutting motor; 17. Cutting knife; 18. Guide rod; 19. Adjusting motor; 20. Moving seat; 21. Adjusting screw; 22. Limit screw; 23. Limit plate; 24. Connecting rod; 25. Fixed rod; 26. Plug-in block; 27. Connecting groove; 28. Connecting bolt; 29. Partition plate; 30. Positioning frame; 31. Positioning rod; 32. Positioning roller; 33. Fixed slide bar; 34. Moving block; 35. Spring telescopic rod; 36. Fixed ring; 37. Connecting frame; 38. Pressing roller. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In actual use of the prior art, since most of its cutting methods are to cut the electrode sheet through the slitting knife installed on the rotating shaft, but when it is necessary to cut electrode sheets of different widths, the rotating shaft needs to be disassembled to adjust the distance between the slitting knives. However, this method is inefficient, affects the production efficiency, and increases the labor intensity.

[0022] Therefore, the present invention provides a slitting device for electrode sheets used in the production of lithium batteries. Refer to Figures 1 - 10 as shown. It includes a fixed frame 1. On both sides of one end of the fixed frame 1, support frames 3 are fixedly installed. A feeding roller 2 is detachably installed at the position between the two support frames 3. An electrode foil 4 is wound around the outer side of the feeding roller 2. A cutting roller 7 is rotatably connected to the middle top position inside the fixed frame 1. A driving mechanism can be arranged between the guiding roller 5 and the cutting roller 7 to drive the guiding roller 5 and the cutting roller 7 to rotate, thereby driving the electrode foil 4 to be fed and output. This driving mechanism is a common existing structure and will not be elaborated here. A slitting component is arranged at the top of the cutting roller 7 for slitting the electrode foil 4. A tensioning component is arranged at the position between the feeding roller 2 and the cutting roller 7 for tensioning and transmitting the electrode foil 4. A winding component is arranged at the end of the fixed frame 1 far from the feeding roller 2 and corresponding to the cutting roller 7 for winding the cut electrode foil 4; The tensioning component includes two guiding rollers 5. Through the design of the two guiding rollers 5, the electrode foil 4 can be positioned and pressed, avoiding the offset of the electrode foil 4 and facilitating feeding at the same time. The two guiding rollers 5 are symmetrically arranged at the inner side of the fixed frame 1 and near one end of the feeding roller 2. The guiding roller 5 is rotatably connected to the fixed frame 1. The upper and lower ends of the electrode foil 4 are respectively in contact with the upper and lower ends of the two guiding rollers 5. A first tensioning roller 6 is rotatably connected to the inner side of the fixed frame 1 and near the cutting roller 7. Through the structural design of the first tensioning roller 6, the electrode foil 4 can be tensioned, thereby avoiding the electrode foil 4 being soft during the feeding process, resulting in uneven slitting. The top of the electrode foil 4 is in contact with the lower end surface of the first tensioning roller 6. A second tensioning roller 9 is rotatably connected to the end of the fixed frame 1 far from the feeding roller 2 and near the cutting roller 7. The lower end surface of the second tensioning roller 9 is in contact with the top of the cut electrode foil 4.

[0023] The slitting assembly includes a guide rod 18 which is fixed to the inner top end of the fixed frame 1 and is located above the material cutting roller 7. A plurality of fixing seats 14 are evenly and slidably connected to the outer side of the guide rod 18. A fixing rod 25 is fixed to the top end of the fixing seat 14, and a connecting seat 15 is arranged at the lower end of the fixing seat 14; A plug-in block 26 is fixed to the top end of the connecting seat 15, and a connecting groove 27 is formed at the position of the lower end of the fixing seat 14 corresponding to the plug-in block 26. The plug-in block 26 is plugged and connected to the fixing seat 14 through the connecting groove 27. A connecting bolt 28 is arranged between the plug-in block 26 and the fixing seat 14, and the plug-in block 26 and the fixing seat 14 are fixedly connected through the connecting bolt 28; A cutting motor 16 is fixed to one side of the connecting seat 15, and a cutting knife 17 is fixed to the output end of the cutting motor 16. The output end of the cutting motor 16 is rotatably connected to the connecting seat 15. An adjusting assembly is arranged above the fixing seat 14. Through the structural design of the plug-in block 26 and the connecting bolt 28, the connecting seat 15 and the cutting motor 16 can be conveniently connected to the fixing seat 14, so that when it is necessary to replace the cutting motor 16 and the cutting knife 17, they can be disassembled conveniently and quickly; The adjusting assembly includes an adjusting plate 11 which is arranged above the guide rod 18. Fixing plates 12 are fixed to both ends of the adjusting plate 11. A plurality of adjusting grooves 13 are evenly formed inside the adjusting plate 11. The plurality of fixing rods 25 are respectively slidably connected to the adjusting plate 11 through the adjusting grooves 13 corresponding to them. Through the structural design of the adjusting plate 11 and the adjusting grooves 13, when the adjusting plate 11 moves, the fixing seat 14 can be driven to move through the fixing rod 25. A limiting plate 23 is fixed to the top end of the fixing rod 25, and a driving assembly is arranged at the positions of both sides of the fixed frame 1 corresponding to the fixing plates 12; The driving assembly includes a moving seat 20 which is arranged at the inner positions on both sides of the fixed frame 1. The moving seat 20 is slidably connected to the fixed frame 1. The moving seat 20 is fixedly connected to the fixing plate 12. Thus, when the moving seat 20 moves, the adjusting plate 11 can be driven to move through the fixing plate 12. An adjusting motor 19 is fixed at the positions on both sides of the inner side of the fixed frame 1 corresponding to the moving seat 20. An adjusting screw rod 21 is fixed to the output end of the adjusting motor 19. In order to facilitate driving the moving seat 20 to move along the axial direction of the adjusting screw rod 21 when the adjusting motor 19 drives the adjusting screw rod 21 to rotate, the adjusting screw rod 21 is threadedly connected to the moving seat 20. A limiting screw rod 22 is slidably connected to the inner top end of the moving seat 20, and the limiting screw rod 22 is fixedly connected to the fixed frame 1.

[0024] During operation, first, the electrode foil 4 wound outside the loading roller 2 is sequentially passed through between two guiding rollers 5 and under the first tensioning roller 6, and then through the top of the cutting roller 7. When performing slitting, the guiding roller 5 and the cutting roller 7 are driven to rotate by an external driving mechanism, so that the electrode foil 4 is fed and transported. At the same time, the cutting motor 16 is started, so that the cutting motor 16 drives the cutting blade 17 to rotate. When the cutting blade 17 rotates, the electrode foil 4 is cut. The cut electrode foil 4 is wound by a winding device. When it is necessary to adjust the distance between two adjacent cutting blades 17, first, the adjusting motor 19 is started, so that the adjusting motor 19 drives the adjusting screw 21 to rotate. When the adjusting screw 21 rotates, it drives the moving seat 20 threadedly connected thereto to move along the axial direction of the adjusting screw 21. When the adjusting screw 21 moves, it drives the adjusting plate 11 to move simultaneously through the fixing plate 12. Since the fixing seat 14 is directionally limited by the guiding rod 18, when the adjusting plate 11 moves, it drives the fixing rod 25 and the fixing seat 14 fixed to the fixing rod 25 to move along the axial direction of the guiding rod 18 through the adjusting groove 13. Thus, when the fixing seat 14 moves, it can drive the cutting motor 16 and the cutting blade 17 to move simultaneously through the connecting seat 15, thereby completing the adjustment. When it is necessary to replace the cutting motor 16 and the cutting blade 17, the connecting bolt 28 can be separated from the plug-in block 26 and the connecting seat 15, and then the cutting motor 16 and the cutting blade 17 can be disassembled.

[0025] Specifically, as shown in Figure 3 , Figure 7 and Figure 8 The winding assembly includes a second winding roller 10. The second winding roller 10 is arranged at the top end of one end of the fixed frame 1 away from the loading roller 2. Through the structural design of the second winding roller 10, the required electrode foil 4 after cutting can be wound. The second winding roller 10 is rotatably connected to the fixed frame 1. A plurality of partition plates 29 are uniformly arranged on the outer side of the second winding roller 10. The partition plates 29 are slidably connected to the second winding roller 10. Through the structural design of the partition plates 29, the cut electrode foil 4 can be limited, avoiding winding deviation and affecting subsequent processing. A first winding roller 8 is arranged below the second winding roller 10 and close to the cutting roller 7. The first winding roller 8 is rotatably connected to the fixed frame 1. Through the structural design of the first winding roller 8, the remaining electrode foil 4 after cutting can be wound, which is convenient for subsequent use. During winding, the second winding roller 10 and the first winding roller 8 can be connected to an external motor, so that the second winding roller 10 and the first winding roller 8 rotate, facilitating winding.

[0026] During operation, when winding up, the second winding roller 10 and the first winding roller 8 are first connected to an external driving device to rotate the first winding roller 8 and the second winding roller 10. The cut electrode foil 4 will first be tensioned by passing through the lower end of the second tensioning roller 9, and then wound up by passing through the top of the second winding roller 10. The remaining electrode foil 4 will be directly wound up on the outside of the first winding roller 8 after being cut.

[0027] Further, as shown in Figure 7 and Figure 8 A connecting rod 24 is fixed to the top of the limiting plate 23, and a positioning frame 30 is fixed to the end of the connecting rod 24 away from the limiting plate 23. When the fixing rod 25 moves, the connecting rod 24 and the positioning frame 30 can be driven to move by the limiting plate 23. Positioning rods 31 are fixed to the inner sides of both sides of the positioning frame 30, and positioning rollers 32 are fixed to the ends of the two positioning rods 31 close to each other. The positioning rollers 32 are in rolling connection with the partition plate 29. Thus, when the positioning frame 30 moves, the partition plate 29 can be driven to move along the axial direction of the second winding roller 10.

[0028] During operation, when adjusting the cutting knife 17, the adjusting plate 11 moves to drive the fixing rod 25 and the limiting plate 23 to move simultaneously. When the limiting plate 23 moves, the positioning frame 30 is driven to move simultaneously through the connecting rod 24. When the positioning frame 30 moves, the partition plate 29 is driven to slide along the outside of the second winding roller 10 under the action of the two positioning rods 31 and the positioning rollers 32. Thus, when adjusting the cutting knife 17, the partition plate 29 can be driven to move simultaneously, so as to conveniently adjust the distance between the two partition plates 29 according to the width of the cut electrode foil 4.

[0029] Among them, as shown in Figure 9 and Figure 10As shown in the figure, at the top end of one end of the fixed frame 1 far away from the feeding roller 2, a fixed sliding rod 33 is fixed. A moving block 34 is slidably connected to the outside of the fixed sliding rod 33. In order to facilitate the moving block 34 to be located in the middle position between the two connecting rods 24 when the connecting rod 24 moves, two connecting frames 37 are rotatably connected to both sides of the lower end of the moving block 34. A torsion spring is provided at the position where the connecting frame 37 is connected to the moving block 34, so as to ensure that the pressing roller 38 can continuously apply pressure to the second winding roller 10. In order to facilitate the pressing of the electrode foil 4 when winding the electrode foil 4 and avoid looseness during winding, a pressing roller 38 is provided at the position between the two ends of the two connecting frames 37 far away from the moving block 34. The pressing roller 38 is rotatably connected to the connecting frame 37. In order to facilitate the movement of the moving block 34 while ensuring that the moving block 34 is located in the middle position between two adjacent connecting rods 24 when the connecting rod 24 moves, so as to facilitate the pressing and winding of the electrode foil 4, a spring telescopic rod 35 is fixed on one side of the moving block 34 close to the connecting rod 24. Fixed rings 36 are fixed to the telescopic ends at both ends of the spring telescopic rod 35. The fixed rings 36 are sleeved on the outside of the connecting rod 24, and the fixed rings 36 are fixedly connected to the connecting rod 24.

[0030] During operation, when the connecting rod 24 moves, it will drive the telescopic end of the spring telescopic rod 35 to extend through the fixed ring 36. The spring inside the spring telescopic rod 35 can ensure that the spring telescopic rod 35 is located in the middle position between the two connecting rods 24, so as to ensure that the moving block 34, the connecting frame 37 and the pressing roller 38 can apply pressure to the middle position of the electrode foil 4, thereby ensuring the winding quality.

[0031] To sum up, it effectively solves the problem in the prior art during actual use. Since most of its cutting methods are to cut the electrode sheet through the slitting knife installed on the rotating shaft, but when it is necessary to cut electrode sheets of different widths, the rotating shaft needs to be disassembled to adjust the distance between the slitting knives. However, this method is inefficient, affects the production efficiency, and increases the labor intensity.

[0032] Working principle: During operation, first, the electrode foil 4 wound on the outer side of the pay-off roller 2 is sequentially passed through between the two guide rollers 5 and under the first tension roller 6, and then through the top of the cutting roller 7. When performing slitting, the guide roller 5 and the cutting roller 7 are driven to rotate by an external drive mechanism, so that the electrode foil 4 is fed and transported. At the same time, the cutting motor 16 is started, so that the cutting motor 16 drives the cutting knife 17 to rotate. When the cutting knife 17 rotates, the electrode foil 4 is cut. The cut electrode foil 4 is wound by a winding device. When it is necessary to adjust the distance between two adjacent cutting knives 17, first, the adjusting motor 19 is started, so that the adjusting motor 19 drives the adjusting screw 21 to rotate. When the adjusting screw 21 rotates, the moving seat 20 threadedly connected thereto moves along the axial direction of the adjusting screw 21. When the adjusting screw 21 moves, the adjusting plate 11 is driven to move simultaneously through the fixing plate 12. Since the fixed seat 14 is directionally limited by the guide rod 18, when the adjusting plate 11 moves, the fixed rod 25 and the fixed seat 14 fixed to the fixed rod 25 move along the axial direction of the guide rod 18 through the adjusting groove 13. Thus, when the fixed seat 14 moves, it can drive the cutting motor 16 and the cutting knife 17 to move simultaneously through the connecting seat 15, thereby completing the adjustment. When it is necessary to replace the cutting motor 16 and the cutting knife 17, the connecting bolt 28 can be separated from the plug-in block 26 and the connecting seat 15, and then the cutting motor 16 and the cutting knife 17 can be disassembled; during winding, first, the second winding roller 10 and the first winding roller 8 are connected to an external drive device, so that the first winding roller 8 and the second winding roller 10 rotate. The cut electrode foil 4 will first be tensioned through the lower end of the second tension roller 9, and then the winding work is carried out through the top of the second winding roller 10. The remaining electrode foil 4 will be directly wound on the outer side of the first winding roller 8 after being cut; when the connecting rod 24 moves, it will drive the telescopic end of the spring telescopic rod 35 to extend through the fixing ring 36. The spring inside the spring telescopic rod 35 can ensure that the spring telescopic rod 35 is located in the middle position between the two connecting rods 24, thereby ensuring that the moving block 34, the connecting frame 37 and the pressing roller 38 can apply pressure to the middle position of the electrode foil 4, thus ensuring the winding quality; when adjusting the cutting knife 17, the adjusting plate 11 moves to drive the fixed rod 25 and the limiting plate 23 to move simultaneously. When the limiting plate 23 moves, it drives the positioning frame 30 to move simultaneously through the connecting rod 24. When the positioning frame 30 moves, it drives the partition plate 29 to slide along the outer side of the second winding roller 10 under the action of the two positioning rods 31 and the positioning rollers 32. Thus, when adjusting the cutting knife 17, the partition plate 29 can be driven to move simultaneously, so as to conveniently adjust the distance between the two partition plates 29 according to the width of the cut electrode foil 4.

[0033] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrode sheet cutting device for lithium battery production, characterized in that: It includes a fixed frame (1). On both sides of one end of the fixed frame (1), support frames (3) are fixedly installed. A loading roller (2) is detachably installed at the position between the two support frames (3). An electrode foil (4) is wound around the outer side of the loading roller (2). A cutting roller (7) is rotatably connected to the middle top position inside the fixed frame (1). A slitting assembly is arranged at the top of the cutting roller (7) for slitting the electrode foil (4). A tensioning assembly is arranged at the position between the loading roller (2) and the cutting roller (7) for tensioning and transporting the electrode foil (4). A winding assembly is arranged at the end of the fixed frame (1) far from the loading roller (2) and corresponding to the cutting roller (7) for winding the cut electrode foil (4).

2. The electrode sheet cutting equipment for lithium battery production according to claim 1, characterized in that: The tensioning assembly includes two guide rollers (5). The two guide rollers (5) are symmetrically arranged at the position near one end of the inner side of the fixed frame (1) and close to the loading roller (2). The guide rollers (5) are rotatably connected to the fixed frame (1). The upper and lower ends of the electrode foil (4) are respectively in contact with the upper and lower ends of the two guide rollers (5). A first tensioning roller (6) is rotatably connected to the position near the cutting roller (7) inside the fixed frame (1). The top of the electrode foil (4) is in contact with the lower end surface of the first tensioning roller (6). A second tensioning roller (9) is rotatably connected to the position near the cutting roller (7) at the end of the fixed frame (1) far from the loading roller (2). The lower end surface of the second tensioning roller (9) is in contact with the top of the cut electrode foil (4).

3. The electrode sheet cutting equipment for lithium battery production according to claim 1, characterized in that: The slitting assembly includes a guide rod (18). The guide rod (18) is fixed to the inner top of the fixed frame (1) and located above the cutting roller (7). A plurality of fixed seats (14) are evenly and slidably connected to the outer side of the guide rod (18). A fixed rod (25) is fixed to the top of the fixed seat (14). A connecting seat (15) is arranged at the lower end of the fixed seat (14). A cutting motor (16) is fixed to one side of the connecting seat (15). A cutting knife (17) is fixed to the output end of the cutting motor (16). The output end of the cutting motor (16) is rotatably connected to the connecting seat (15). An adjusting assembly is arranged above the fixed seat (14).

4. The electrode sheet slitting device for lithium battery production according to claim 3, wherein: The adjusting assembly includes an adjusting plate (11). The adjusting plate (11) is arranged above the guide rod (18). Fixing plates (12) are fixed to both ends of the adjusting plate (11). A plurality of adjusting grooves (13) are evenly formed inside the adjusting plate (11). The plurality of fixed rods (25) are respectively slidably connected to the adjusting plate (11) through the corresponding adjusting grooves (13). A limiting plate (23) is fixed to the top of the fixed rod (25). A driving assembly is arranged at the positions on both sides of the fixed frame (1) corresponding to the fixing plates (12).

5. An electrode sheet slitting device for lithium battery production according to claim 4, characterized in that: The driving assembly includes a moving seat (20). The moving seat (20) is arranged at the inner positions on both sides of the fixed frame (1). The moving seat (20) is slidably connected to the fixed frame (1). The moving seat (20) is fixedly connected to the fixed plate (12). Adjusting motors (19) are fixed at the inner sides of both sides of the fixed frame (1) and at positions corresponding to the moving seat (20). An adjusting screw rod (21) is fixed to the output end of the adjusting motor (19). The adjusting screw rod (21) is threadedly connected to the moving seat (20). A limiting screw rod (22) is slidably connected to the inner side of the top end of the moving seat (20). The limiting screw rod (22) is fixedly connected to the fixed frame (1).

6. The electrode sheet slitting device for lithium battery production according to claim 3, wherein: A plug-in block (26) is fixed to the top end of the connecting seat (15). A connecting groove (27) is formed at the lower end of the fixed seat (14) and at a position corresponding to the plug-in block (26). The plug-in block (26) is plugged and connected to the fixed seat (14) through the connecting groove (27). A connecting bolt (28) is arranged at the position between the plug-in block (26) and the fixed seat (14). The plug-in block (26) and the fixed seat (14) are fixedly connected through the connecting bolt (28).

7. An electrode sheet cutting device for lithium battery production according to claim 6, characterized in that: The winding assembly includes a second winding roller (10). The second winding roller (10) is arranged at the top end position of one end of the fixed frame (1) away from the feeding roller (2). The second winding roller (10) is rotatably connected to the fixed frame (1). A plurality of partition plates (29) are evenly arranged on the outer side of the second winding roller (10). The partition plates (29) are slidably connected to the second winding roller (10). A first winding roller (8) is arranged below the second winding roller (10) and close to the cutting roller (7). The first winding roller (8) is rotatably connected to the fixed frame (1).

8. An electrode sheet cutting device for lithium battery production according to claim 4, characterized in that: A connecting rod (24) is fixed to the top end of the limiting plate (23). A positioning frame (30) is fixed to the end of the connecting rod (24) away from the limiting plate (23). Positioning rods (31) are fixed to the inner sides of both sides of the positioning frame (30). Positioning rollers (32) are fixed to the ends of the two positioning rods (31) close to each other. The positioning rollers (32) are in rolling connection with the partition plates (29).

9. The electrode sheet cutting equipment for lithium battery production according to claim 8, wherein: A fixed sliding rod (33) is fixed to the top end of one end of the fixed frame (1) away from the feeding roller (2). A moving block (34) is slidably connected to the outer side of the fixed sliding rod (33). Two connecting frames (37) are rotatably connected to both sides of the lower end of the moving block (34). A torsion spring is arranged at the position where the connecting frame (37) is connected to the moving block (34). A pressing roller (38) is arranged at the position between the ends of the two connecting frames (37) away from the moving block (34). The pressing roller (38) is rotatably connected to the connecting frame (37).

10. An electrode sheet cutting device for lithium battery production according to claim 9, characterized in that: A telescopic spring rod (35) is fixed to a side of the moving block (34) close to the connecting rod (24). Fixed rings (36) are fixed to telescopic ends at both ends of the telescopic spring rod (35). The fixed rings (36) are sleeved on the outer side of the connecting rod (24), and the fixed rings (36) are fixedly connected to the connecting rod (24).

Images