Road deviation rectifying mechanism and lithium battery winding equipment

Abstract

A pole piece material belt or a diaphragm material belt is conveyed by a passing roller assembly, when a reference stock line of a pole piece or a diaphragm has deviation with a preset stock line, a deviation rectifying driving piece drives a deviation rectifying cam to rotate, the deviation rectifying cam drives a cam guider, the cam guider pushes a cam pushing block, and the deviation rectifying cam is driven by a deviation rectifying driving piece to rotate. Therefore, the deviation rectifying bracket rotates relative to the mounting base, and a pole piece or diaphragm belt path on the roller passing assembly is rectified to a preset standard belt path. The cam assembly is high in response speed, efficiency is improved, the cam is low in cost and durable in use, time for replacing waste equipment is shortened, and deviation rectifying efficiency is integrally improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production, specifically to a belt-guided correction mechanism and a lithium battery winding device. Background Technology

[0002] In the lithium-ion battery winding process, the electrode and separator may misalign during transport. This misalignment results in poor alignment of the wound bare cells, directly leading to cell scrap. A high number of scrapped cells reduces the product yield. Current technologies often incorporate multiple correction mechanisms during the conveying process. However, existing correction mechanisms, driven by lead screws, suffer from slow response, high cost, short lifespan, and large space requirements, resulting in low overall correction efficiency. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a belt correction mechanism and a lithium battery winding device, which can solve the problem of low correction efficiency of the existing correction mechanism.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: On the one hand, a belt correction mechanism is provided, including a mounting base, a correction bracket, and a cam assembly. The mounting base and the correction bracket are rotatably connected. A roller assembly is provided on the correction bracket for conveying the belt. The cam assembly includes a correction cam, a cam guide, and two cam push blocks. The two cam push blocks are mounted opposite each other on the correction bracket, and the arrangement direction of the two cam push blocks is perpendicular to the axial direction of the roller assembly. The cam guide abuts against the inner sides of the two cam push blocks. The correction cam is connected to the cam guide. A correction drive is provided on the mounting base for driving the correction cam to rotate.

[0005] As a further improvement to the above technical solution, the mounting base and the correction bracket are connected by a rotating shaft; a bearing seat is provided on the mounting base, one end of the rotating shaft is fixedly connected to the correction bracket, and the other end is connected to the bearing seat through a bearing.

[0006] As a further improvement to the above technical solution, the rotating shaft is threaded with a locking nut, which is located on the side of the bearing away from the correction bracket.

[0007] As a further improvement to the above technical solution, the correction bracket is provided with a receiving groove, and both cam push blocks are located in the receiving groove; both cam push blocks are elongated, and their length directions are parallel to the axial direction of the roller assembly.

[0008] As a further improvement to the above technical solution, the mounting base and the correction bracket are arranged in a vertical direction. The mounting base is provided with two blocks, which are spaced apart and are both located on the side of the mounting base near the correction bracket. The correction bracket is provided with a limit block, which is located between the two blocks.

[0009] As a further improvement to the above technical solution, the limiting block and the two stops are both strip-shaped, the length direction of the two stops is vertical, and the length direction of the limiting block is horizontal.

[0010] As a further improvement to the above technical solution, a sensor is also included, which is mounted on the mounting base.

[0011] As a further improvement to the above technical solution, the correction drive includes a drive motor, and the shaft of the drive motor is connected to the correction cam.

[0012] As a further improvement to the above technical solution, the roller assembly includes two rollers, which are parallel to each other and spaced apart.

[0013] On the other hand, a lithium battery winding device is provided, including a transmission mechanism and several of the aforementioned belt alignment mechanisms, wherein the transmission mechanism is used to transmit the material belt.

[0014] The beneficial effects of this invention are as follows: The electrode or diaphragm material strip is conveyed by the roller assembly. When there is a deviation between the reference material line of the electrode or diaphragm and the predetermined material line, the correction drive unit drives the correction cam to rotate. The correction cam drives the cam guide, which in turn pushes the cam push block, thereby causing the correction bracket to rotate relative to the mounting base, correcting the electrode or diaphragm strip path on the roller assembly to the predetermined standard path. The cam assembly has a fast response speed, improving efficiency. Furthermore, the cam has a low cost and is more durable, reducing the time required to replace worn-out equipment and improving overall correction efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the path correction mechanism provided in a preferred embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the path correction mechanism provided in a preferred embodiment of the present invention from another angle;

[0018] Figure 3 This is a schematic diagram of the path correction mechanism provided in a preferred embodiment of the present invention from another angle.

[0019] Reference numerals: 1. Mounting base; 2. Correction bracket; 3. Cam assembly;

[0020] 11. Correction drive component; 12. Rotary shaft; 13. Bearing; 14. Bearing housing; 15. Locking nut; 16. Stop block; 21. Roller assembly; 22. Receiving groove; 23. Limiting block; 31. Correction cam; 32. Cam guide; 33. Cam push block.

[0021] 111. Drive motor; 211. Roller. Detailed Implementation

[0022] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0023] Please see Figure 1-3 The preferred embodiment of this utility model provides a belt correction mechanism, including a mounting base 1, a correction bracket 2, a cam assembly 3, and a sensor. The mounting base 1 and the correction bracket 2 are rotatably connected. The correction bracket 2 is provided with a roller assembly 21 for conveying the belt. The sensor is mounted on the mounting base 1. When the sensor detects a deviation in the electrode material line or the diaphragm material line, the cam assembly 3 can drive the correction bracket 2 to rotate relative to the mounting base 1 to correct the material line of the belt on the roller assembly 21 to the predetermined path.

[0024] Specifically, the cam assembly 3 includes a correction cam 31, a cam guide 32, and two cam pushers 33. The two cam pushers 33 are mounted opposite each other on the correction bracket 2, and their arrangement direction is perpendicular to the axis of the roller assembly 21. The cam guide 32 abuts against the inner sides of both cam pushers 33. The correction cam 31 is connected to the cam guide 32. A correction drive 11 is provided on the mounting base 1 to drive the correction cam 31 to rotate. When the reference material line of the electrode or diaphragm deviates from the predetermined material line, the correction drive 11 drives the correction cam 31 to rotate. The correction cam 31 drives the cam guide 32, which in turn pushes the cam pushers 33, thereby causing the correction bracket 2 to rotate relative to the mounting base 1, correcting the electrode or diaphragm path on the roller assembly 21 to the predetermined standard path. The cam assembly 3 has a fast response speed, improving efficiency. Furthermore, the cam has a lower cost and is more durable, reducing the time required to replace worn-out equipment and improving overall correction efficiency.

[0025] The mounting base 1 and the alignment bracket 2 are connected by a rotating shaft 12. The mounting base 1 is provided with a bearing seat 14. One end of the rotating shaft 12 is fixedly connected to the alignment bracket 2, and the other end is connected to the bearing seat 14 through a bearing 13. The alignment bracket 2 rotates relative to the mounting base 1 with the rotating shaft 12 as the axis. The rotating shaft 12 can support the alignment bracket 2 and ensure its rotational stability. The setting of the bearing 13 and the bearing seat 14 can reduce friction, ensure the high-precision positioning of the rotating shaft 12, reduce vibration and deviation, and help improve the rotational efficiency of the rotating shaft 12.

[0026] Furthermore, the rotating shaft 12 is threadedly connected to a locking nut 15, which is located on the side of the bearing 13 away from the straightening bracket 2. The locking nut 15 is used to restrict the movement of the bearing 13 to prevent the bearing 13 from loosening or shifting, which would cause the bearing 13 to come out of the bearing housing 14.

[0027] The alignment bracket 2 is provided with a receiving groove 22, and both cam pushers 33 are located in the receiving groove 22, which facilitates the installation of the cam pushers 33. Both cam pushers 33 are elongated, and their length directions are parallel to the axis of the roller assembly 21. When the alignment drive 11 drives the alignment cam 31 to rotate, the cam guide 32 moves along the length direction of the cam pusher 33 while pushing the cam pusher 33, so that the alignment bracket 2 rotates. The structure is simple and the operation is stable.

[0028] The mounting base 1 and the alignment bracket 2 are arranged vertically. The mounting base 1 has two stops 16 spaced apart and positioned on the side of the mounting base 1 closest to the alignment bracket 2. The alignment bracket 2 has a limit block 23 located between the two stops 16. A rotating shaft 12 connects the mounting base 1 and the alignment bracket 2 vertically. During alignment, the alignment bracket 2 can rotate horizontally relative to the mounting base 1, and the limit block 23 can only move between the two stops 16, restricting the rotation angle of the alignment bracket 2 and preventing the material belt from twisting due to excessive rotation, thus avoiding damage to the material belt.

[0029] More specifically, the limiting block 23 and the two stop blocks 16 are both strip-shaped, with the length direction of the two stop blocks 16 being vertical and the length direction of the limiting block 23 being horizontal, so that the limiting block 23 and the stop blocks 16 can collide to ensure the limiting effect.

[0030] In this embodiment, the correction drive 11 includes a drive motor 111, the shaft 12 of the drive motor 111 is connected to the correction cam 31, and the drive motor 111 can achieve high-precision position, speed and acceleration control to ensure the accuracy of the movement trajectory of the correction cam 31.

[0031] The guide roller assembly 21 includes two guide rollers 211, which are parallel to each other and spaced apart. The material belt is input from one of the guide rollers 211, output from the other guide roller 211, and passes through the gap between the two guide rollers 211. The guide rollers 211 can effectively control the tension of the material belt, prevent it from being too tight or too loose, and ensure smooth operation.

[0032] A preferred embodiment of this utility model also provides a lithium battery winding device, including a transmission mechanism and several belt correction mechanisms as described in the above embodiments. The transmission mechanism is used to transmit the material belt. During the transmission process, multiple correction mechanisms are set. When the material belt deviates during transmission, the correction drive 11 drives the correction cam 31 to rotate. The correction cam 31 drives the cam guide 32, and the cam guide 32 pushes the cam push block 33, thereby causing the correction bracket 2 to rotate relative to the mounting base 1, correcting the electrode or diaphragm belt path on the roller assembly 21 to the predetermined standard belt path. Multiple correction mechanisms can correct the material belt simultaneously or correct a section of the deviated material belt individually. Each correction mechanism operates independently and does not affect the others.

[0033] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A path correction mechanism, characterized in that: The device includes a mounting base, a correction bracket, and a cam assembly. The mounting base and the correction bracket are rotatably connected. The correction bracket is equipped with a roller assembly for conveying the material belt. The cam assembly includes a correction cam, a cam guide, and two cam push blocks. The two cam push blocks are mounted opposite each other on the correction bracket, and the arrangement direction of the two cam push blocks is perpendicular to the axis of the roller assembly. The cam guide abuts against the inner sides of both cam push blocks. The correction cam is connected to the cam guide. The mounting base is equipped with a correction drive component for driving the correction cam to rotate.

2. The path correction mechanism according to claim 1, characterized in that: The mounting base and the alignment bracket are connected by a rotating shaft; the mounting base is provided with a bearing seat, one end of the rotating shaft is fixedly connected to the alignment bracket, and the other end is connected to the bearing seat through a bearing.

3. The guide belt correction mechanism according to claim 2, characterized in that: The shaft is threaded with a locking nut, which is located on the side of the bearing away from the alignment bracket.

4. The path correction mechanism according to claim 1, characterized in that: The correction bracket is provided with a receiving groove, and both cam push blocks are located in the receiving groove; both cam push blocks are elongated, and their length directions are parallel to the axial direction of the roller assembly.

5. The path correction mechanism according to claim 1, characterized in that: The mounting base and the correction bracket are arranged vertically. The mounting base is provided with two blocks, which are spaced apart and are both located on the side of the mounting base near the correction bracket. The correction bracket is provided with a limit block, which is located between the two blocks.

6. The path correction mechanism according to claim 5, characterized in that: The limiting block and the two stops are both strip-shaped, with the length direction of the two stops being vertical and the length direction of the limiting block being horizontal.

7. The path correction mechanism according to claim 1, characterized in that: It also includes a sensor, which is mounted on the mounting base.

8. The guide belt correction mechanism according to claim 1, characterized in that: The correction drive includes a drive motor, and the shaft of the drive motor is connected to the correction cam.

9. The guide belt correction mechanism according to claim 1, characterized in that: The roller assembly includes two rollers, which are parallel to each other and spaced apart.

10. A lithium battery winding device, characterized in that: It includes a transmission mechanism and a belt alignment mechanism as described in any one of claims 1-9, wherein the transmission mechanism is used to transmit the material belt.

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