Fixed-width slitting device for battery diaphragm

Abstract

The utility model relates to the technical field of battery diaphragm production equipment, and discloses a battery diaphragm fixed-width slitting device which comprises a base, an unwinding unit is arranged at the top of the base, two tape penetrating rollers are rotatably connected to the top of the base, an adjusting assembly is arranged at the top of the base, and a winding assembly is arranged at the top of the base. A pressing assembly is arranged on the top of the base. The adjusting assembly comprises an air cylinder, and the output end of the air cylinder is fixedly connected with a connecting corner. According to the utility model, the air cylinder is started to drive the connecting angle to move linearly, the adjacent sliding rods are fixedly or movably connected by the supporting plate through the rotating shaft, and the adjacent sliding rods move synchronously when the right sliding rod is pushed, so that the multiple sliding rods are opened and closed at equal intervals, the blades move along with the sliding rods, the slitting requirements of diaphragms with different widths are met, the slitting width is accurately controlled, and the distance between the blades is accurately adjusted; the slitting precision and consistency are ensured, different specifications are adapted, the remodeling time is shortened, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of battery separator production equipment, and in particular to a battery separator width-fixed slitting device. Background Technology

[0002] Battery separators are crucial materials separating the positive and negative electrodes of a battery, serving both short-circuit protection and ion conduction. Their performance directly impacts battery safety and lifespan, requiring characteristics such as electronic insulation and chemical stability. Slitting equipment, through unwinding, slitting, rewinding, and intelligent monitoring, precisely cuts wide-width materials into narrow strips, achieving automated processing. In battery production, slitting equipment uses methods such as disc cutters and lasers to slit rolled separators into strips suitable for cell specifications. Slitting accuracy affects the compatibility and safety of separator assembly, while efficiency determines processing capacity. High-efficiency equipment improves production consistency, reduces costs, and increases yield, making it a key step in separator assembly for cell assembly. Together, these two aspects ensure both battery production quality and efficiency.

[0003] In existing battery separator slitting technologies, the width requirements for battery separators vary significantly due to differences in application scenarios and performance requirements. However, the blade width of traditional slitting devices is often difficult to adjust flexibly. To produce separators of different specifications, it is often necessary to replace the entire set of slitting blades, which is not only time-consuming and labor-intensive but also significantly increases production costs. At the same time, because battery separators are thin and flexible, they lack effective clamping components, leading to frequent problems during the winding process, such as easy unwinding, gaps between layers causing wrinkles, edge curling, and uneven winding density. This results in poor winding stability and low production efficiency, failing to meet requirements for tightness and flatness. Therefore, a fixed-width battery separator slitting device is proposed to solve these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a battery separator width-fixed slitting device, which aims to improve the existing battery separator slitting technology, which suffers from difficulties in blade width adjustment, lack of effective clamping components, and numerous winding problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a battery separator width-fixed slitting device, including a base, an unwinding unit provided on the top of the base, two threading rollers rotatably connected to the top of the base, an adjusting component provided on the top of the base, a winding component provided on the top of the base, and a pressing component provided on the top of the base;

[0006] The adjustment assembly includes a cylinder, the output end of which is fixedly connected to a connecting angle. Two slide rails are fixedly connected to the outer side of the base, and multiple slide rods are arranged on the outer side of the base, arranged sequentially from left to right. The left slide rod is fixedly connected between the two slide rails, and the other slide rods are slidably connected between the two slide rails. A rotating shaft is fixedly connected to the middle of the slide rod, and a support plate is rotatably connected to the outer side of the rotating shaft. A support plate is rotatably connected to the outer side of the rotating shaft, and rotating shafts are rotatably connected to both ends of the support plate. A blade is fixedly connected to the bottom of the slide rod.

[0007] As a further description of the above technical solution:

[0008] The clamping assembly includes a clamping roller, with connecting blocks fixedly connected to both ends of the clamping roller. A fixing rod is slidably connected to the outside of the connecting block. A second spring is fixedly connected to the top of the connecting block. Multiple limiting rods are fixedly connected to the outside of the clamping roller. Two first springs are fixedly connected inside the limiting rods. A fixing block is fixedly connected to the other end of the first spring. A limiting block is fixedly connected inside the fixing block. A connecting rod is fixedly connected to the outside of the limiting block. A roller is rotatably connected inside the connecting rod.

[0009] As a further description of the above technical solution:

[0010] The winding assembly includes a motor, which is fixedly connected to the outside of the base, and a winding roller is fixedly connected to the output end of the motor.

[0011] As a further description of the above technical solution:

[0012] The connecting block is slidably connected inside the base, the fixing rod is fixedly connected inside the base, and the other end of the spring is fixedly connected inside the base.

[0013] As a further description of the above technical solution:

[0014] The fixing block is rotatably connected inside the limiting rod, and the limiting block is rotatably connected outside the limiting rod.

[0015] As a further description of the above technical solution:

[0016] The cylinder is fixedly connected to the outside of the base.

[0017] As a further description of the above technical solution:

[0018] The connecting angle is fixedly connected to the top of the slide bar on the right side.

[0019] As a further description of the above technical solution:

[0020] The first support plate is located outside the second support plate.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the connecting angle is linearly displaced by a starting cylinder. Two adjacent slide rods are fixedly connected by support plates one and two through a rotating shaft one, ensuring stable movement of the mechanism. Support plate two is movably connected to another support plate one through a rotating shaft two. When the cylinder pushes the right slide rod, the adjacent slide rods move synchronously. This structure allows multiple slide rods to open and close at equal intervals. The blades are installed on the slide rods and move at equal intervals with the slide rods, which can meet the slitting requirements of battery separators of different widths, accurately control the slitting width, and realize precise adjustment and stable control of the blade spacing. While ensuring slitting accuracy and width consistency and reducing scrap rate, it adapts to the slitting requirements of separators of different specifications, shortens the production line changeover time, and improves production efficiency.

[0023] 2. In this utility model, during the pressing process of the slitting device, the connecting rod contacts the cut diaphragm on the winding roller. The pressing roller slides outside the fixed rod via the connecting block. The connecting block automatically droops down with the second spring. As the diaphragm is wound up, the pressing roller moves up, the second spring returns to its original deformation, and the roller drives the connecting rod and the limiting block to move. The limiting block compresses the first spring via the fixed block. After the diaphragm is wound up, the first spring resets and drives the fixed block. The connecting rod drives the limiting block via the fixed block, causing the roller to move down, thus completing the pressing of the cut diaphragm. This ensures the flatness and tightness of the winding, prevents the diaphragm from shifting or misaligning during the winding process, and keeps the diaphragm in a fixed shape without external force constraints. This facilitates the subsequent disassembly and handling of the winding shaft, reduces the risk of damage caused by loosening, and ultimately significantly improves the winding quality and production reliability. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the battery separator width-fixed cutting device proposed in this utility model;

[0025] Figure 2 This is a cross-sectional schematic diagram of the rollers in the battery separator width-fixing slitting device proposed in this utility model;

[0026] Figure 3 This is an exploded perspective view of the base of the battery separator width-fixed cutting device proposed in this utility model.

[0027] Legend:

[0028] 1. Base; 2. Unwinding unit; 3. Cylinder; 4. Slide rail; 5. Slide rod; 6. Support plate one; 7. Support plate two; 8. Rotating shaft one; 9. Rotating shaft two; 10. Connecting angle; 11. Blade; 12. Threading roller; 13. Spring one; 14. Pressure roller; 15. Take-up roller; 16. Motor; 17. Connecting block; 18. Fixing rod; 19. Spring two; 20. Limiting rod; 21. Connecting rod; 22. Roller; 23. Fixing block; 24. Limiting block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-3 An embodiment of this utility model provides a battery separator width-fixed slitting device, including a base 1, an unwinding unit 2 provided on the top of the base 1, two threading rollers 12 rotatably connected to the top of the base 1, an adjustment component provided on the top of the base 1, a winding component provided on the top of the base 1, and a pressing component provided on the top of the base 1. The slitting device is integrated through the base 1. The unwinding unit 2 includes an unwinding roller, which is driven by a motor. The unwinding unit 2 can rotate outside the base 1. The unwinding unit 2 is locked by a shaft end locking device. The threading rollers 12 are used to press the battery separator, and the pressing component is used to press the cut battery separator.

[0031] The adjustment assembly includes a cylinder 3, with a connecting angle 10 fixedly connected to the output end of the cylinder 3. Two slide rails 4 are fixedly connected to the outer side of the base 1. Multiple slide rods 5 are arranged on the outer side of the base 1, sequentially from left to right. The left slide rod 5 is fixedly connected between the two slide rails 4, while the other slide rods 5 are slidably connected between the two slide rails 4. A rotating shaft 8 is fixedly connected to the middle of each slide rod 5. A support plate 7 is rotatably connected to the outer side of the rotating shaft 8. A support plate 6 is rotatably connected to the outer side of the rotating shaft 8. Rotating shafts 9 are rotatably connected to both ends of the support plate 6. Shaft 2 9 is rotatably connected to both ends of support plate 2 7. Blade 11 is fixedly connected to the bottom of slide rod 5. Cylinder 3 serves as the power source for the adjustment component. Connecting angle 10 is moved by cylinder 3. Slide rod 5 slides through slide rail 4. The leftmost slide rod 5 is fixed between two slide rails 4 as the starting point. Other slide rods 5 slide between two slide rails 4. Rotating shaft 1 8 is located in the middle of slide rod 5. Support plate 1 6 and support plate 2 7 are fixed by rotating shaft 1 8. Rotating shaft 2 9 is used at both ends of support plate 1 6 and support plate 2 7. Blade 11 is used to cut battery separator.

[0032] The clamping assembly includes a clamping roller 14, with connecting blocks 17 fixedly connected to both ends of the clamping roller 14. A fixing rod 18 is slidably connected to the outside of the connecting block 17. A spring 19 is fixedly connected to the top of the connecting block 17. Multiple limiting rods 20 are fixedly connected to the outside of the clamping roller 14. Two springs 13 are fixedly connected inside the limiting rods 20. A fixing block 23 is fixedly connected to the other end of the springs 13. A limiting block 24 is fixedly connected inside the fixing block 23. A connecting rod 21 is fixedly connected to the outside of the limiting block 24. The connecting rod 21 is rotatably connected inside. The roller 22 and the clamping assembly function through the clamping roller 14. The clamping roller 14 slides up and down through the connecting block 17. The connecting block 17 slides outside the fixed rod 18. The connecting block 17 slides up and down through the second spring 19. The limiting rod 20 is used to limit the sliding range of the connecting rod 21. The fixed block 23 slides inside the limiting rod 20 through the first spring 13. The limiting block 24 is used to limit the range of motion of the fixed block 23. The connecting rod 21 rotates through the limiting block 24. The roller 22 moves through the connecting rod 21.

[0033] The winding assembly includes a motor 16, which is fixedly connected to the outside of the base 1. A winding roller 15 is fixedly connected to the output end of the motor 16. The winding assembly starts to run through the motor 16 fixed to the outside of the base 1, and the winding roller 15 realizes the winding action through the motor 16.

[0034] The connecting block 17 is slidably connected inside the base 1, the fixing rod 18 is fixedly connected inside the base 1, and the other end of the spring 19 is fixedly connected inside the base 1. The connecting block 17 slides inside the base 1, the fixing rod 18 is fixed inside the base 1, and the spring 19 stores elastic potential energy by being fixed inside the base 1.

[0035] The fixed block 23 is rotatably connected inside the limiting rod 20, and the limiting block 24 is rotatably connected outside the limiting rod 20. The fixed block 23 and the limiting block 24 move by sliding inside the limiting rod 20.

[0036] The cylinder 3 is fixedly connected to the outside of the base 1, and the cylinder 3 functions by being fixed to the outside of the base 1.

[0037] The connecting angle 10 is fixedly connected to the top of the right slide bar 5, and the right slide bar 5 slides through the connecting angle 10.

[0038] Support plate 6 is located outside support plate 7, and support plate 6 and support plate 7 are distributed in a scissor pattern.

[0039] Working principle:

[0040] When the width of the battery separator needs to be adjusted to be different from the previous specification, cylinder 3 is activated. Cylinder 3 acts as a power drive unit, pushing the connecting angle 10 to make a linear displacement. Two adjacent slide rods 5 are connected to each other by support plate 2 7 and support plate 1 6. The rotating shaft 1 8 is used to fix the connection node between support plate 2 7 and support plate 1 6 to ensure the stability of the mechanism during movement. Support plate 2 7 and another support plate 1 6 are movably connected by rotating shaft 2 9. When cylinder 3 pushes the right slide rod 5 to move, based on the connection relationship between the components, the adjacent slide rod 5 will also be driven to move synchronously. Based on this structural design, multiple slide rods 5 can open or close at equal intervals. The blade 11 is installed on the slide rod 5. Along with the equal-interval movement of the slide rod 5, the blade 11 can also realize the equal-interval displacement, thereby meeting the slitting requirements of battery separators of different widths and accurately controlling the width of the separator after slitting.

[0041] Given that the battery separator material is thin and soft, it is prone to loosening during operations such as disassembly and assembly of the winding shaft if there is no external force to restrain it after winding, resulting in an unsatisfactory winding effect. In the pressing process of the battery separator slitting device, the connecting rod 21 is brought into contact with the battery separator that has been cut on the winding roller 15. The pressing roller 14 can slide outside the fixed rod 18 through the connecting block 17. The connecting block 17 is automatically lowered by the second spring 19. As the battery separator continues to be wound, the pressing roller 14 gradually moves upward, and at the same time, the second spring 19 gradually returns to its original position. The roller 22 undergoes complex elastic deformation, moving the connecting rod 21 along with the winding process of the battery separator. The connecting rod 21 then moves the limiting block 24. The limiting block 24 applies pressure to the spring 13 through the fixing block 23, compressing the spring 13. When the battery separator is finished winding, the spring 13 recovers its deformation, moving the fixing block 23. The connecting rod 21 moves the limiting block 24 through the fixing block 23, which in turn causes the roller 22 to move downward, ultimately achieving the pressing operation on the slit battery separator.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery separator width-fixed slitting device, comprising a base (1), characterized in that: The base (1) is provided with an unwinding unit (2) at the top, and two threading rollers (12) are rotatably connected to the top of the base (1). The base (1) is provided with an adjusting component, a winding component, and a pressing component. The adjustment assembly includes a cylinder (3), the output end of which is fixedly connected to a connecting angle (10). Two slide rails (4) are fixedly connected to the outer side of the base (1). Multiple slide rods (5) are provided on the outer side of the base (1). The multiple slide rods (5) are arranged sequentially from left to right. The left slide rod (5) is fixedly connected between the two slide rails (4). The other slide rods (5) are slidably connected between the two slide rails (4). A rotating shaft (8) is fixedly connected to the middle of the slide rod (5). A support plate (7) is rotatably connected to the outer side of the rotating shaft (8). A support plate (6) is rotatably connected to the outer side of the rotating shaft (8). A rotating shaft (9) is rotatably connected to both ends of the support plate (6). The rotating shaft (9) is rotatably connected to both ends of the support plate (7). A blade (11) is fixedly connected to the bottom of the slide rod (5).

2. The battery separator width-fixed slitting device according to claim 1, characterized in that: The pressing assembly includes a pressing roller (14), with connecting blocks (17) fixedly connected to both ends of the pressing roller (14). A fixing rod (18) is slidably connected to the outside of the connecting block (17). A spring (19) is fixedly connected to the top of the connecting block (17). Multiple limiting rods (20) are fixedly connected to the outside of the pressing roller (14). Two springs (13) are fixedly connected inside the limiting rod (20). A fixing block (23) is fixedly connected to the other end of the spring (13). A limiting block (24) is fixedly connected inside the fixing block (23). A connecting rod (21) is fixedly connected to the outside of the limiting block (24). A roller (22) is rotatably connected inside the connecting rod (21).

3. The battery separator width-fixed slitting device according to claim 1, characterized in that: The winding assembly includes a motor (16), which is fixedly connected to the outside of the base (1), and a winding roller (15) is fixedly connected to the output end of the motor (16).

4. The battery separator width-fixed slitting device according to claim 2, characterized in that: The connecting block (17) is slidably connected inside the base (1), the fixing rod (18) is fixedly connected inside the base (1), and the other end of the spring (19) is fixedly connected inside the base (1).

5. The battery separator width-fixed slitting device according to claim 2, characterized in that: The fixing block (23) is rotatably connected inside the limiting rod (20), and the limiting block (24) is rotatably connected outside the limiting rod (20).

6. The battery separator width-fixed slitting device according to claim 1, characterized in that: The cylinder (3) is fixedly connected to the outside of the base (1).

7. The battery separator width-fixed slitting device according to claim 1, characterized in that: The connecting angle (10) is fixedly connected to the top of the slide bar (5) on the right side.

8. The battery separator width-fixed slitting device according to claim 1, characterized in that: The first support plate (6) is located outside the second support plate (7).

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