CN219523036U

CN219523036U - Shell punching die suitable for aluminum plastic film

Info

Publication number: CN219523036U
Application number: CN202223302943.9U
Authority: CN
Inventors: 曹素良; 押媛媛; 张宏芳; 贾学恒
Original assignee: Tianjin Juyuan New Energy Technology Co ltd
Current assignee: Tianjin Juyuan New Energy Technology Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-08-15
Anticipated expiration: 2032-12-09

Abstract

The utility model belongs to the field of soft package battery manufacturing, and particularly relates to a shell punching die suitable for an aluminum plastic film, which comprises a material pressing plate and a concave template; the pre-punching pit punch is arranged on the pressing plate; the contact part of the pre-punching pit punch and the aluminum plastic film is spherical or hemispherical; the concave template is provided with a groove corresponding to the position of the pre-punching pit punch. The contact part of the pre-punching pit punch and the aluminum plastic film is spherical or hemispherical, the spherical structure of the punch has great benefit for aluminum plastic stretching compensation, each position of the spherical structure participates in stretching, and the problems of a rectangular structure and serious stretching at the corners are avoided. The shell punching die structure is suitable for existing shell punching equipment, and special pre-punching equipment is not required to be purchased.

Description

Shell punching die suitable for aluminum plastic film

Technical Field

The utility model belongs to the field of soft package battery manufacturing, and particularly relates to a shell punching die suitable for an aluminum plastic film.

Background

The soft package battery has the advantages of good safety, high specific energy, good electrochemical performance, long service life, flexible design and the like. The soft package battery structurally adopts a structure of aluminum plastic packaging film encapsulation.

The aluminum plastic packaging film is of a sheet structure initially, and needs to be punched to obtain a desired pit structure, and the pit structure is used for wrapping internal structures such as a pole group, electrolyte and the like. As a new energy industry that is developing at a high speed, the energy density of lithium ion monomer battery cells is also increasingly required under a strong market competition. Therefore, the deep punching capacity of the aluminum plastic packaging bag is required to be further improved, so that the aluminum plastic packaging bag can obtain the maximum deep punching with the thinnest thickness.

Disclosure of Invention

The utility model aims to provide a shell punching die suitable for an aluminum plastic film.

The utility model adopts the following technical scheme to realize the aim:

a shell punching die suitable for an aluminum plastic film comprises a material pressing plate and a concave template; the pre-punching pit punch is arranged on the pressing plate; the contact part of the pre-punching pit punch and the aluminum plastic film is spherical or hemispherical; the concave template is provided with a groove corresponding to the position of the pre-punching pit punch.

The material pressing plate comprises an original punch.

The original punch is cylindrical or square in shape.

The material pressing plate is connected with the material pressing mechanism through the mounting plate.

The pre-punching pit punch comprises a connecting block connected with the material pressing plate and a spherical or hemispherical punch connected with the connecting block.

The height of the pre-punching pit punch is smaller than that of the original punch.

The width of the pre-punching pit punch is smaller than that of the original punch.

And a limiting column is also arranged on the pressing plate.

The limit posts are distributed evenly.

The material pressing plate is cuboid; the limit posts are 4 and are arranged at four corners of the pressing plate.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is suitable for a shell punching die of an aluminum plastic film, and the pre-punching pit punch is arranged on the pressing plate, so that the pre-punching pit function can be realized, and the limit punching depth of the aluminum plastic is improved by about 15%.

The contact part of the pre-punching pit punch and the aluminum plastic film is spherical or hemispherical, the spherical structure has great benefit for aluminum plastic stretching compensation, each position of the spherical structure participates in stretching, and the problems of a rectangular structure and serious stretching at the corners are avoided. Preferably, the pre-punching pit punch is arranged on the existing material pressing plate, and special pre-punching equipment is not required to be purchased.

Drawings

Fig. 1-2 are schematic views of the overall structure of a shell punching mold suitable for an aluminum plastic film according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the structure of a pre-pit punch and an original punch according to an embodiment of the present utility model;

fig. 4 is a structure of an aluminum plastic film after pit punching using a shell mold for an aluminum plastic film according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-3, an embodiment of the present utility model is shown, which is a shell punching mold suitable for an aluminum plastic film, and includes a pressing plate 3 and a female die plate 4; the material pressing plate is connected with the material pressing mechanism through a mounting plate; realize pressing down and lifting up of the pressing plate; a connecting plate 2 is arranged between the mounting plate 1 and the material pressing plate 3 as one form, and a pre-punching punch and an original punch are arranged on the material pressing plate; the contact part of the pre-punching pit punch and the aluminum plastic film is spherical or hemispherical; the original punch is a cylinder or a square, the cylinder is suitable for a button cell, and the square is provided with a square cell;

the size of the pre-pit punch 62 is smaller than the original punch 61. The method comprises the following steps: the height and the width of the pre-pit punch are smaller than those of the original punch, the height of the pre-pit punch is the distance from one end far away from the pressing plate to the pressing plate in the direction perpendicular to the pressing plate, and the width of the pre-pit punch is the maximum distance from the two ends of the pre-pit punch in the direction perpendicular to the height.

As one form, the pre-punching pit punch comprises a connecting block connected with a pressing plate and a hemisphere at a contact part with an aluminum plastic film; the connecting block is cylindrical; the diameter of the hemispherical body is smaller than that of the original punch; and the integral height of the cylinder connecting block and the hemispheroids is smaller than that of the original punch. The design ensures that the actual pit covers the pre-pit completely after the actual pit is punched, and no pre-pit mark remains. The concave template, the pre-punching pit punch and the original punch are provided with grooves at positions corresponding to each other. The material pressing plate is rectangular, and limit posts are arranged at four corners of the material pressing plate.

When the aluminum plastic film is used, the aluminum plastic film is placed at the position between the pressing plate and the female die plate, the pressing plate is used for punching the aluminum plastic film to obtain the aluminum plastic film with the original punch and the pre-punching punch after punching the pit, the pre-punching and the actual punching are carried out, fig. 4 shows that feeding is continued, the original punch continues to carry out the actual punching on the pre-punching of the aluminum plastic film obtained before, the whole punching action is completed, and as the size of the pre-punching punch 62 is smaller than that of the original punch 61, the actual punching completely covers the pre-punching after the actual punching, and the step of pre-punching can enable the stretching limit of the aluminum plastic film to be lifted, and the distance between the pre-punching and the actual punching is required to be consistent with the feeding distance. The number of pre-pit punching can be changed according to specific requirements of the pit punching.

The pre-punching pit punch structure is a spheroid, the spherical structure of the punch has great benefits for aluminum plastic stretching compensation, each position of the spherical structure participates in stretching, and the problems of a rectangular structure and serious stretching at the corners are avoided. The shell punching die structure is suitable for existing shell punching equipment, and special pre-punching equipment is not required to be purchased.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims

1. The shell punching die suitable for the aluminum plastic film is characterized by comprising a material pressing plate and a concave template; the pre-punching pit punch is arranged on the pressing plate; the contact part of the pre-punching pit punch and the aluminum plastic film is spherical or hemispherical; the concave template is provided with a groove corresponding to the position of the pre-punching pit punch.

2. The shell punching die suitable for the aluminum plastic film according to claim 1, wherein the material pressing plate comprises an original punch.

3. The shell punching die for the aluminum plastic film according to claim 2, wherein the shape of the original punch is cylindrical or square.

4. The shell punching die suitable for the aluminum plastic film according to claim 1, wherein the material pressing plate is connected with the material pressing mechanism through a mounting plate.

5. The shell punching die for aluminum plastic films according to claim 2, wherein the height of the pre-pit punch is smaller than that of the original punch.

6. The shell mold for aluminum plastic films according to claim 5, wherein the pre-pit punch has a smaller width than the original punch.

7. The shell punching die suitable for the aluminum plastic film according to claim 1, wherein the pre-pit punching head comprises a connecting block connected with the material pressing plate and a spherical or hemispherical punching head connected with the connecting block.

8. The shell punching die suitable for the aluminum plastic film according to claim 1, wherein the material pressing plate is further provided with a limiting column.

9. The shell punching die suitable for the aluminum plastic film according to claim 8, wherein the limiting columns are evenly distributed.

10. The shell punching die suitable for the aluminum plastic film according to claim 8, wherein the material pressing plate is cuboid; the limit posts are 4 and are arranged at four corners of the pressing plate.