Edge expanding tool for lithium battery diaphragm rim charge slitting

Abstract

The utility model discloses an edge expanding tool for lithium battery diaphragm rim charge slitting, which comprises a cutter base and a cutter positioned on one side of the cutter base, the cutting edge part of the cutter is arranged upwards, a tool body is arranged below the cutter base, and the tool body is detachably connected with the cutter base through a screw 1. The diaphragms with different slitting specifications above the cutter are ensured to be in a straightened state, so that the diaphragms are prevented from loosening to cause edge tearing and slitting diaphragm cutting, and the product yield is improved; the diaphragm is prevented from being polluted.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery separator cutting technology, specifically to an edge-expanding tooling for cutting edge material of lithium battery separators. Background Technology

[0002] The separator is an inner component of a lithium-ion battery, and it is one of the key internal components in the battery's structure. The performance of the separator determines the battery's interface structure, internal resistance, and other characteristics, directly affecting the battery's capacity, cycle life, and safety performance. A high-performance separator plays a crucial role in improving the overall performance of the battery. The main function of the separator is to separate the positive and negative electrodes, preventing them from contacting and causing a short circuit.

[0003] After the lithium battery separator is manufactured, it needs to be slit according to the different specifications of the lithium battery and the customer's requirements, cutting it into the required width for subsequent processing. During the slitting process of the separator edge material, a fixed cutter removes the waste material from the edge of the separator and rolls it up independently. If the tension is too high, the dimensional indicators will not be met and the flatness will deteriorate; if the tension is too low, the separator will loosen and tear at the edge, resulting in slits and reducing the product yield.

[0004] Therefore, this application is submitted. Utility Model Content

[0005] The purpose of this utility model is to provide an edge-expanding tool for cutting edge material of lithium battery separators, so that the separator above the cutter is kept taut during the cutting process, preventing the separator from loosening and causing problems such as tearing or breaking.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0007] An edge-expanding tooling for cutting edge material of lithium battery separator includes a cutter base and a cutter located on one side of the cutter base. The cutting edge of the cutter is arranged facing upwards. The tooling body is arranged below the cutter base. The tooling body is detachably connected to the cutter base by a screw.

[0008] Furthermore, the tooling body includes a symmetrical expansion arm, the tail end of which is integrally connected, and the front end of which forms an open end, the open end being longer than the tip of the cutter.

[0009] Furthermore, a connecting rod is provided on the inner side of the expansion arm, and the connecting rod and the tail end of the expansion arm form a mounting hole, through which the screw passes.

[0010] Furthermore, a limiting seat is provided below the tail end of the expanding arm, and a screw passes through the through hole and mounting hole of the limiting seat in sequence to connect with the cutter base.

[0011] Furthermore, the width of the limiting seat is greater than the diameter of the mounting hole, and the diameter of the through hole is smaller than the diameter of the mounting hole.

[0012] Furthermore, the cutter base is provided with a screw hole for assembly with a screw.

[0013] Furthermore, a second screw hole is provided in the middle of the expansion arm, and a second screw and a wing nut are provided in the symmetrical second screw hole. The position of the wing nut on the second screw is used to adjust the distance between the expansion arms.

[0014] Furthermore, the wing nut contacts the outer side of the expansion arm for limiting.

[0015] Furthermore, both the expansion arm and the connecting rod are made of plastic.

[0016] The beneficial effects of this utility model are:

[0017] In this invention, an edge-expanding fixture is provided below the cutter base, along with a limiting seat and a screw to fix its position. Simultaneously, a screw hole is provided in the expansion arm. After manually deforming the plastic expansion arm, the screw and wing nut are used for limiting and maintaining this distance to support the edge expansion after slitting the diaphragm. This ensures that the diaphragms above the cutter, of different slitting specifications, are taut, preventing the diaphragms from loosening and causing tearing or slitting, thus improving product yield. Furthermore, the plastic material prevents contamination when in contact with the diaphragm. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a side view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the edge-expanding tooling of this utility model;

[0021] Figure 4 This is a schematic diagram of the edge-expanding tooling of this utility model during the cutting process.

[0022] Reference numerals: 1-Tool body, 10-Expansion arm, 11-Connecting rod, 12-Second screw hole, 13-Second screw, 14-Wing nut, 15-Mounting hole, 16-Open end, 2-Cutter base, 20-First screw hole, 21-Cutter, 3-Limit seat, 30-Through hole, 4-First screw. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] Embodiment 1 of this utility model is an edge-expanding tooling for cutting edge material of lithium battery separator, including a cutter base 2 and a cutter 21 located on one side of the cutter base 2. The cutting edge of the cutter 21 is arranged facing upward. The tooling body 1 is arranged below the cutter base 2. The tooling body 1 is detachably connected to the cutter base 2 by screw 4.

[0028] Reference Figure 1 and Figure 2 This application adds a tooling body 1 for edge widening below the cutter base 2. The tooling body 1 is detachably connected to the cutter base 2 by screw 4, which facilitates the disassembly or installation of the tooling body 1. The cutter 21 is fixed, and the lithium battery separator moves from bottom to top under the transmission of the roller, so that when it comes into contact with the blade of the cutter 21, it cuts the edge material. The tooling body 1 is located below the cutter 21 and widens and stretches the cut separator to ensure that the separator above the cutter 21 is in a taut state, preventing the separator from loosening and causing tearing and splitting of the separator.

[0029] In some preferred embodiments, the tooling body 1 includes a symmetrical expansion arm 10, the tail end of which is integrally connected, and the front end of which forms an open end 16, which is longer than the tip of the cutter 21.

[0030] Reference Figure 3The opening ends 16 of the expansion arms 10 are spaced apart, and the front ends of the two expansion arms 10 respectively contact the two sides of the slit diaphragm, thereby keeping the diaphragm above the cutter 21 in a taut state, improving the slitting effect and efficiency of the cutter 21 on the diaphragm edge material, and increasing the product yield. To ensure that the opening ends 16 at the front ends of the expansion arms 10 are always in contact with the diaphragm, the length of the opening ends 16 is set to be greater than the tip of the cutter 21.

[0031] To ensure the fixture body 1 is securely mounted on the bottom of the cutter base 2, a connecting rod 11 is provided on the inner side of the expansion arm 10. The connecting rod 11 and the tail end of the expansion arm 10 form a mounting hole 15, through which a screw 4 passes. A limiting seat 3 is provided below the tail end of the expansion arm 10, and the screw 4 passes through the through hole 30 and the mounting hole 15 of the limiting seat 3 in sequence to connect with the cutter base 2.

[0032] A limiting seat 3 is set between screw 4 and tooling body 1. By assembling the limiting seat 3 and screw 4 with the cutter base 2, the tooling body 1 is firmly installed below the base of the cutter 21, thereby ensuring that the installation position does not move during the edge expansion operation of the tooling body 1 and enhancing the straightening effect on the diaphragm.

[0033] Meanwhile, the tail ends of the connecting rod 11 and the expansion arm 10 are integrally formed, and the mounting hole 15 formed between them is used for the screw 4 to pass through and connect to the base of the cutter 21. Furthermore, the width of the limiting seat 3 is greater than the diameter of the mounting hole 15, and the diameter of the through hole 30 is smaller than the diameter of the mounting hole 15. To prevent poor fixing due to the overall width of the limiting seat 3 being smaller than the mounting hole 15, the diameter of the through hole 30 can be adapted to match the screw 4, and can be set according to actual needs, so that both the bottom and top ends of the screw 4 are fixedly connected, thereby ensuring the installation firmness of the tooling body 1 located between the cutter base 2 and the limiting seat 3.

[0034] In some preferred embodiments, the cutter base 2 is provided with a screw hole 20 for mounting the screw 4. The screw hole 20 is provided to securely connect the tip of the screw 4.

[0035] Example 2

[0036] This embodiment 2 is implemented based on embodiment 1. A screw hole 12 is provided in the middle of the expansion arm 10. A screw 13 and a wing nut 14 are provided in the symmetrical screw hole 12. The position of the wing nut 14 on the screw 13 is used to adjust the distance between the expansion arms 10. The wing nut 14 contacts the outer side of the expansion arm 10 for limiting.

[0037] Specifically, screw holes 12 are made in the middle of the two expansion arms 10. After the expansion arms 10 are deformed by hand, screws 13 are installed to pass through the two screw holes 12 in sequence. The screws 13 are locked with wing nuts 14 to fix the distance between the front ends of the two expansion arms 10. The expansion arms 10 maintain their deformation under the limit of the wing nuts 14, thereby adjusting the distance between the front ends of the two to adapt to the cutting of different diaphragm edge materials and improve the utilization rate of the device.

[0038] In some preferred embodiments, both the expansion arm 10 and the connecting rod 11 are made of plastic. Using plastic material in contact with the diaphragm prevents metal contamination and avoids affecting the diaphragm's performance; it also facilitates adjusting the distance between the front ends of the two expansion arms 10 through deformation, ensuring that diaphragm edge materials of different cutting specifications are kept taut when using the tooling body 1.

[0039] When using this utility model, refer to Figure 4 First, place the fixture body 1 and the limiting seat 3 below the cutter base 2. Screw 4 passes through the through hole 30, mounting hole 15 and screw hole 20 of the limiting seat 3 in sequence. Adjust the position of the fixture body 1 so that the bottom end of screw 4 is in close contact with the bottom surface of the limiting seat 3 to lock the fixture body 1. Then, deform the expansion arm 10 by hand and pass screw 13 through screw hole 12 in sequence. Use wing nut 14 to lock and limit it. Maintain this distance to expand the edge after the diaphragm is cut, and ensure that the diaphragms of different cutting specifications above the cutter 21 are in a taut state to prevent the diaphragm from loosening, causing tearing and cutting of the diaphragm, and improving the product yield. At the same time, the plastic material prevents contamination when in contact with the diaphragm.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A tooling for edge-expanding of lithium battery separator edge material, characterized in that, It includes a cutter base (2) and a cutter (21) located on one side of the cutter base (2). The blade of the cutter (21) is set with its blade facing upward. A tooling body (1) is set below the cutter base (2). The tooling body (1) is detachably connected to the cutter base (2) by a screw (4).

2. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 1, characterized in that, The tooling body (1) includes a symmetrical expansion arm (10), the tail end of which is integrally connected, and the front end of which forms an open end (16), which is longer than the tip of the cutter (21).

3. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 2, characterized in that, A connecting rod (11) is provided on the inner side of the expansion arm (10), and the connecting rod (11) and the tail end of the expansion arm (10) form a mounting hole (15), and the screw (4) passes through the mounting hole (15).

4. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 3, characterized in that, A limiting seat (3) is provided below the tail end of the expansion arm (10), and the screw (4) passes through the through hole (30) and the mounting hole (15) of the limiting seat (3) in sequence and is connected to the cutter base (2).

5. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 4, characterized in that, The width of the limiting seat (3) is greater than the diameter of the mounting hole (15), and the diameter of the through hole (30) is smaller than the diameter of the mounting hole (15).

6. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 4, characterized in that, The cutter base (2) is provided with a screw hole (20) for assembly with screw (4).

7. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 4, characterized in that, The expansion arm (10) has a screw hole (12) in the middle. A screw (13) and a wing nut (14) are provided in the symmetrical screw hole (12). The position of the wing nut (14) on the screw (13) is used to adjust the distance between the expansion arms (10).

8. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 7, characterized in that, The wing nut (14) contacts the outer side of the expansion arm (10) for limiting.

9. The edge-expanding tooling for cutting edge material of lithium battery separators according to claim 7, characterized in that, Both the expansion arm (10) and the connecting rod (11) are made of plastic.

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