Die cutting device for button cell separator

Abstract

The utility model discloses a punch -cutting device suitable for button cell diaphragm, including base and and punch -stamping plate, punch -stamping plate is located the top of base, and the position fixed with first guide pillar corresponding corner, and the position of base corresponding corner is seted up and has the column hole of first guide pillar plug -in and telescopic cooperation, first guide pillar bushing has the first spring and carries out elastic support, punch -stamping plate lower side whole column formula installation has cutting knife, cutting knife is the column body structure, the multilayer mould plate of bottom side superposition formula installation has in the base, the mould plate all has mould hole with cutting knife position, and each layer mould plate is through the second spring and carries out elastic support. Compared with prior diaphragm punch -cutting machine, simple and convenient operation, the practicality is strong, can replace mould plate and cutting knife fast, and the applicability is stronger, and the number of cutting knife is more, through increasing the number of baffle, increasing the diaphragm layer that can punch -cut, is more efficient, and has certain expansibility, can carry out continuous operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of button battery production equipment, and in particular relates to a punching device suitable for button battery separators. Background Technology

[0002] In the field of lithium battery research and experimentation, coin cell testing is an important means of exploring the performance of battery materials and optimizing battery structure. As a key component of the battery, the die-cutting quality of the separator directly affects the accuracy and reliability of experimental data.

[0003] In the testing of lithium-ion coin cell half-cells, the separator, as a key component, needs to be custom-made according to the size of the coin cell. The laboratory uses a punching method for fabrication, and the punching quality has a significant impact on battery performance. Traditional separator punching methods suffer from low precision and poor efficiency, making it difficult to meet increasingly stringent testing requirements. Commonly used laboratory separator punching methods have several shortcomings: manual punching is extremely inefficient and it's difficult to ensure consistent dimensions each time, leading to poor repeatability of experimental results; existing mechanical punching equipment is limited in function and complex to operate, failing to meet the needs of frequent changes in separator materials, sizes, and the number of punched layers in scientific research experiments. Utility Model Content

[0004] The purpose of this invention is to provide a punching device suitable for button cell separators, which solves the problems of limited production specifications and low efficiency in the existing button cell separator punching production.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A punching device for button cell separators includes a base and a stamping plate. The stamping plate is located directly above the base and a first guide post is fixed at a corner position. The base has a post hole at the corner position for the first guide post to be inserted and telescopically coordinated. A first spring is sleeved on the first guide post for elastic support. Cutting blades are arranged in a row on the lower side of the stamping plate. The cutting blades are cylindrical structures. Multiple mold plates are stacked on the upper side of the base. Each mold plate has a mold hole corresponding to the position of the cutting blade. Each layer of mold plates is elastically supported by a second spring.

[0006] Furthermore, all the cutters are fixed to the same mounting plate. The mounting plate and each cutter are integrally mounted on the stamping plate in a detachable manner. The end side of the stamping plate has a groove, and the groove forms a sliding groove inward on the stamping plate to allow the mounting plate to slide on the side.

[0007] Furthermore, the cutter has a tubular outer wall and is filled with a foam layer inside.

[0008] Furthermore, a second guide post is provided at the corresponding corner of the mold plate for the second spring to be sleeved and installed. Both the mold plate and the base are provided with positioning holes for the extension and retraction of the second guide post. A material inlet is installed on the base corresponding to the position of the lowest mold plate.

[0009] Furthermore, it also includes a winding device and an unwinding device for winding the film layer.

[0010] This utility model has the following advantages: compared with the existing diaphragm punching machine, it is simple and convenient to operate, highly practical, can quickly change the mold plate and cutter, has stronger applicability, and has more cutters. By increasing the number of diaphragms, it can punch more diaphragm layers, which is more efficient. It also has a certain degree of scalability and can be used for continuous operation. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0012] Figure 1 : Front structural diagram of this utility model.

[0013] Figure 2 : A three-dimensional structural diagram of this utility model.

[0014] Figure 3 : Schematic diagram of the continuous operation structure of this utility model.

[0015] The components represented by each number in the attached diagram are listed below: base 7, stamping plate 8, first guide post 81, post hole 71, first spring 82, stamping equipment 5, cutter 11, mold plate 2, second spring 21, mounting plate 1, second guide post 22, feed bin 3, winding device 6, unwinding device 9, film layer 4. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] like Figures 1-2The diagram shows a punching device suitable for button cell separators, comprising a base 7 and a stamping plate 8. Both the base and the stamping plate are square structures. The stamping plate 8 is located directly above the base 7, and a first guide post 81 is fixed at a corresponding corner position. The first guide post is a cylindrical body with a circular cross-section, vertically fixed to the stamping plate. The base 7 has a post hole 71 at the corresponding corner position for the first guide post 81 to insert and extend / retract. A first spring 82 is sleeved on the first guide post 81 for elastic support. The first spring is located between the base and the stamping plate, acting as a tubular spring, sleeved on the outside of the first guide post, with its upper and lower ends supported by the base and the stamping plate. Above the stamping plate is a stamping device 5, which presses the stamping plate downwards, compressing the first spring. The depth of the post hole meets the requirements of the complete stroke of the stamping device 5 and satisfies the limit requirements of the complete stroke. When the stamping device 5 retracts, the stamping plate is reset by the rebound action of the first spring, preparing for the next stamping cycle.

[0018] Cutters 11, cylindrical in structure, are mounted in a row on the underside of the stamping plate 8. Multiple layers of mold plates 2 are stacked on the upper side of the base 7. Each mold plate 2 has a mold hole corresponding to the cutter position. The layers of mold plates 2 are elastically supported by a second spring 21. The cutters are arranged in horizontal and vertical rows at equal intervals, precisely positioning themselves in the mold holes. A film layer is placed between the single-layer mold plates. During the complete stamping stroke, the cutters move synchronously with the stamping plate, inserting into the mold holes to extrude and cut the stacked film layers, forming a circular separator. This device can accommodate multiple mold plates and stack multiple film layers. Multiple battery separators can be produced simultaneously in a single stamping process, resulting in extremely high production efficiency and accuracy. During the stamping plate reset phase, the second springs between the mold plates reset, facilitating the next stamping process.

[0019] like Figure 2 As shown: all cutters 11 are fixed to the same mounting plate 1. The mounting plate 1 and each cutter 11 are integrally mounted on the stamping plate 8. The stamping plate 8 has a groove on its end side, which forms a sliding groove inward corresponding to the stamping plate, for sliding installation on the side of the mounting plate 1. The upper end of the cutter is vertically fixed to the mounting plate and is integrally mounted on the stamping plate. Since button batteries also have different specifications, the corresponding separator sizes are different. Therefore, the mounting plate and the entire cutter assembly can be replaced according to requirements. Similarly, the mold plate can also be disassembled and replaced to meet manufacturing requirements. The cutter 11 has a tubular outer wall and is filled with a foam layer inside to reduce damage to the separator during the punching process.

[0020] like Figure 2As shown: A second guide post 22 is positioned at the corner of the mold plate 2 for mounting the second spring 21. The base 7 and mold plate 2 have positioning holes for the extension and retraction of the second guide post 22. The upper end of the second guide post is fixed to the corner of the uppermost mold plate. Positioning holes are provided at the corners of the mold plates on the lower layers for limiting the compression and movement of the mold plates. A feed bin 3 is installed on the base 7 corresponding to the position of the lowermost mold plate 2. This is used to collect the battery separator formed during punching.

[0021] like Figure 3 As shown: It also includes a winding device 6 and an unwinding device 9 for winding the film layer 4. It is used for continuous production.

[0022] These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of this utility model, so that those skilled in the art can better understand and utilize this utility model.

Claims

1. A punching device suitable for button cell separators, characterized in that: Includes a base (7) and a stamping plate (8). The stamping plate (8) is located directly above the base (7) and a first guide post (81) is fixed at the corner position. The base (7) has a post hole (71) at the corner position for the first guide post (81) to be inserted and telescopically coordinated. The first guide post (81) is sleeved with a first spring (82) for elastic support. The stamping plate (8) has cutters (11) arranged in a row on the lower side. The cutters (11) are cylindrical structures. The base (7) has multiple layers of mold plates (2) stacked on the upper side. Each mold plate (2) has a mold hole corresponding to the cutter position. Each layer of mold plates (2) is elastically supported by a second spring (21).

2. The punching device for button cell separators according to claim 1, characterized in that: The cutters (11) are all fixed to the same mounting plate (1). The mounting plate (1) and each cutter (11) are as a whole and can be detachably installed on the stamping plate (8). The end side of the stamping plate (8) has a groove, and the groove forms a sliding groove inward corresponding to the stamping plate, which is used for sliding installation on the side of the mounting plate (1).

3. The punching device for button cell separators according to claim 1 or 2, characterized in that: The cutter (11) has a tubular outer wall and is filled with a foam layer inside.

4. The punching device for button cell separators according to claim 1, characterized in that: The mold plate (2) is provided with a second guide post (22) at the corresponding corner position for the second spring (21) to be sleeved and installed. The base (7) and the mold plate (2) are provided with positioning holes for the second guide post (22) to expand and contract.

5. The punching device for button cell separators according to claim 1, characterized in that: The base (7) is equipped with a feeding hopper (3) at the position corresponding to the bottom mold plate (2).

6. The punching device for button cell separators according to claim 1, characterized in that: It also includes a winding device (6) and an unwinding device (9) for winding the film layer (4).

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