CN219583072U - Punching die for conductive foam with film - Google Patents

Abstract

The utility model discloses a punching die for conductive foam with a film, which comprises a die body arranged on a punch press, wherein the lower surface of the die body is provided with a U-shaped groove, a punching cutter matched with the profile structure of one side of a punching product is arranged in the U-shaped groove, the side surface of the U-shaped groove is provided with a linear mirror surface cutter matched with the profile structure of the other side of the punching product, and the die body is provided with punching cutters positioned at two sides of the U-shaped groove; the punching cutter is formed by sequentially connecting a first bending part, a second bending part, a first straight line part and a second straight line part, wherein the first bending part and the second bending part are symmetrically arranged along the axis of the width direction of the die body, the first straight line part is connected with the two first bending parts, the second straight line part is connected with the two first bending parts, and the bending parts of the two second bending parts are matched with the first straight line part and one side profile of a punched product. The utility model is used for punching small conductive foam, the section is not easy to collapse and deform, the quality of punched products meets the technological requirements, and the production efficiency is high.

Description

Punching die for conductive foam with film

Technical Field

The utility model relates to the technical field of conductive foam production, in particular to a punching die for conductive foam with a film.

Background

The conductive foam is a pad formed by wrapping a layer of high-conductivity conductive cloth outside a sponge body and then adhering an adhesive tape, is suitable for electromagnetic shielding, antistatic (ESD) and grounding occasions, can be processed into various shapes and sizes according to customer requirements, is a gap shielding material with high cost performance, has good elasticity and conductivity, and is widely applied to the fields of communication, computers, power systems and the like.

The existing conductive foam is often required to be adhered to a release film in the production process, and then a plurality of independent special-shaped foam is formed by punching through a punching die. However, as the size of the special-shaped foam is usually smaller, the conventional punching die is adopted, and the special-shaped foam is easy to collapse and deform in an edge section, so that the size is unqualified, the process requirement cannot be met, and the production efficiency is lower.

Disclosure of Invention

The utility model aims to provide a punching die for conductive foam with a film, which is used for solving the problems of section collapse and deformation during punching of smaller conductive foam, ensuring that the quality of punched products meets the technological requirements and improving the production efficiency.

In order to solve the technical problems, the utility model adopts the following scheme:

the die-cutting die for the conductive foam with the film comprises a die body arranged on a punch press, wherein the lower part of the die body is used for the conductive foam with the film to pass through, the lower surface of the die body is provided with a U-shaped groove, a die-cutting tool matched with the contour structure of one side of a die-cutting product is arranged in the U-shaped groove, the side surface of the U-shaped groove is provided with a linear mirror surface tool matched with the contour structure of the other side of the die-cutting product, and the length direction of the die body is provided with punching tools positioned at two sides of the U-shaped groove; the punching cutter is formed by sequentially connecting a first bending part, a second bending part, a first straight line part and a second straight line part, wherein the first bending part and the second bending part are symmetrically arranged along the axis of the width direction of the die body, the first straight line part is connected with the two first bending parts, the second straight line part is connected with the two first bending parts, and the bending parts of the two second bending parts are matched with the first straight line part and one side profile of a punched product.

By adopting the technical scheme, on the basis of the existing die, the linear mirror surface cutter is embedded into the side surface of the U-shaped groove, the surface of the mirror surface cutter is smooth, the bonding phenomenon with the conductive foam cotton can be reduced, before punching, the conductive foam cotton is bonded on the release film in a strip shape, the release film moves below the die body at a certain speed, the die body moves downwards, the punching cutter and the mirror surface cutter simultaneously punch the conductive foam cotton, the punching cutter punches the release film, the punching cutter cuts the left end of the formed outline on one side of the conductive foam cotton, the mirror surface cutter cuts the formed outline into small-size foam cotton after the conductive foam cotton moves once, the small-size foam cotton is separated from the left-side whole foam cotton along with the transverse movement of the conductive foam cotton, the required small-size foam cotton is formed on the release film repeatedly, the die can well ensure the left-side integrity of the conductive foam cotton when punching, the conductive foam cotton is difficult to occur and deform, and the product yield is higher, and the product yield is improved.

Optionally, the center of punching a hole cutter is equipped with the waste material self-discharging hole, and the overall dimension in waste material self-discharging hole and punching a hole cutter looks adaptation, and upwards extends to mould body upper surface.

Optionally, the size of the waste dump hole increases from bottom to top.

Optionally, the die-cut cutter center is equipped with the waste material from the groove of unloading, and the waste material is from the appearance in groove of unloading and die-cut cutter looks adaptation, and upwards extends to mould body upper surface.

Optionally, the size of the waste self-unloading groove increases from bottom to top.

Optionally, the punching cutter is a round cutter, and the waste self-discharging hole is round.

Optionally, a positioning column located on the die body is arranged above the punching tool.

Optionally, the conductive foam with the film comprises a strip-shaped release film and conductive foam, and the conductive foam is adhered to the surface of the release film along the length direction of the conductive foam.

The utility model has the beneficial effects that:

1. compared with the prior art, the die is used for punching and cutting out the required small-size foam at one time, the die cutting tool is used for punching and cutting out the outline of one side of the foam at first, the integrity of the left side of the conductive foam can be well ensured, the conductive foam moves once and then the left side of the conductive foam is cut by the thinner mirror surface tool, meanwhile, the die cutting tool is used for forming the outline of one side of the required small-size foam on the left side of the complete conductive foam again, the reciprocating is performed in this way, a plurality of small-size foam is obtained on the release film, the problem that collapse and deformation are difficult to occur on the section of the conductive foam is solved, the product yield is high, and the production efficiency is improved.

2. The design of the self-discharging hole and the self-discharging groove of the waste material can enable the punching and waste discharging process to be smoother, the waste material discharging efficiency is improved, the cleaning of the die edge is guaranteed, the product quality and the productivity are further effectively improved, and the service life of the die is effectively prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of the cutter body;

FIG. 3 is a schematic illustration of forming a right side profile of a first small-sized foam;

FIG. 4 is a view showing the structure of the die cut of FIG. 3;

FIG. 5 is a schematic view of a mirror cutter cutting the left end of a first small-size foam;

FIG. 6 is a schematic view of a mirror cutter cutting the left end of a second small-size foam;

fig. 7 is a structural view of a small-sized foam formed on a release film.

Reference numerals: 1-mould body, 2-reference column, 3-mirror surface cutter, 4-pore canal, 5-first straight line portion, 6-second kink, 7-first kink, 8-second straight line portion, 9-die-cut cutter, 10-U-shaped groove, 11-punching cutter, 12-waste self-discharging groove, 13-waste self-discharging hole, 14-small-size foam, 15-release film, 16-foam waste, 17-conductive foam and 18-conductive foam with film.

Detailed Description

The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "configured," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The die-cutting die for the conductive foam 18 with the film comprises a die body 1 arranged on a punch press, wherein the lower part of the die body 1 is used for the conductive foam 18 with the film to pass through, the lower surface of the die body 1 is provided with a U-shaped groove 10, the U-shaped groove 10 is internally provided with a die-cutting cutter 9,U which is matched with the contour structure of one side of a die-cutting product, the side surface of the groove 10 is provided with a linear mirror surface cutter 3 which is matched with the contour structure of the other side of the die-cutting product, and the length direction of the die body 1 is provided with punching cutters 11 which are positioned at two sides of the U-shaped groove 10; the punching cutter 9 is formed by sequentially connecting a first bending part 7, a second bending part 6, a first straight line part 5 and a second straight line part 8, wherein the first bending part 7 and the second bending part 6 are symmetrically arranged along the axis of the width direction of the die body 1, the first straight line part 5 is connected with the two first bending parts 7, the second straight line part 8 is connected with the two first bending parts 7, and the bending parts of the two second bending parts 6 are matched with the first straight line part 5 and one side profile of a punched product.

In this embodiment, as shown in fig. 1, a die body 1 is mounted on a high-speed punch, a conductive foam 18 with a film is placed under the die, the conductive foam 18 with a film comprises a PTE release film 15 and a conductive foam 17 which are in strip shape, the conductive foam 17 is adhered on the surface of the release film 15 along the length direction of the conductive foam, the conductive foam 18 with a film can move along the length direction according to the designed speed and displacement distance, a U-shaped groove 10 is formed on the lower surface of the die body 1, a punching cutter 9 is arranged in the U-shaped groove 10, the punching cutter 9 is formed by sequentially connecting two first bending parts 7, two second bending parts 6, a first straight line part 5 and a second straight line part 8, the first bending parts 7 and the second bending parts 6 are symmetrically arranged along the axis of the width direction of the die body 1, the first straight line part 5 is connected with the two first bending parts 7, the second straight line part 8 is connected with the two first bending parts 7, the first bending part 7 is bent at right angle, the second bending part 6 is bent at obtuse angle, the bending parts of the two second bending parts 6 are matched with the connecting contour line of the first straight line part 5 and the right side contour of a punched product, punching cutters 11 are arranged on two sides of the length direction of the U-shaped groove 10, the punching cutters 11 are used for punching out needed holes on the PET release film 15, positioning columns 2 positioned on the die body 1 are arranged above the punching cutters 11, the positioning columns 2 play a role in positioning when being used for moving the die body 1 up and down, the accuracy of the up and down moving position of the die body 1 is ensured, a linear mirror cutter 3 is embedded in the side surface of the U-shaped groove 10, a duct 4 for the wire cutting to pass through is arranged on the die body 1, the wire cutting is adopted for cutting a mounting groove for mounting the mirror cutter 3, the size of the mounting groove is slightly smaller than the thickness of the mirror cutter 3, so that the mirror cutter 3 is mounted more firmly, the die-cut surface of the mirror cutter 3 is an inclined cutter with the angle of 25-30 degrees, the surface of the mirror cutter 3 is smooth, the bonding phenomenon with the conductive foam 17 can be reduced, the conductive foam 17 is bonded on the release film 15 in a strip shape before die cutting, the release film 15 moves below the die body 1 at a certain speed, the die body 1 faces downwards, the die-cut cutter 9 and the mirror cutter 3 simultaneously die-cut the conductive foam 17, the die-cut cutter 11 punches the release film 15, the height of the die-cut cutter 11 is higher than the height of the die-cut cutter 9 and the mirror cutter 3, thus the die-cut cutter 9 can be prevented from being broken, as shown in figures 3 and 4, the outline of the conductive foam 17 on the right side of the head formed small foam of the conductive foam 17 is then moved once, as shown in figure 5, the mirror surface cutter 3 cuts the left end of the formed outline to obtain the outline on the left side of the small-size foam 14, the outline is a flat surface, the outline is cut into the small-size foam 14 so as to be separated from the whole left foam, along with the transverse movement of the conductive foam 17, as shown in fig. 6, the process is repeated, the required small-size foam 14 is formed on the release film 15, as shown in fig. 7, after the conductive foam 17 is punched, the non-punched part is torn from the PET release film 15, so that the required punched product is obtained, the integrity on the left side of the conductive foam 17 can be well ensured when the die is punched, the problem that collapse and deformation are difficult to occur on the section of the conductive foam 17 is solved, the product qualification rate is higher, and the production efficiency is further improved.

Example 2

Further, a waste dump hole 13 is arranged in the center of the punching cutter 11, and the external dimension of the waste dump hole 13 is matched with the punching cutter 11 and extends upwards to the upper surface of the die body 1.

Further, the size of the waste dump hole 13 increases from bottom to top.

Further, the center of the punching cutter 9 is provided with a waste self-unloading groove 12, the shape of the waste self-unloading groove 12 is matched with that of the punching cutter 9, and the waste self-unloading groove extends upwards to the upper surface of the die body 1.

Further, the size of the scrap box receptacle 12 increases from bottom to top.

Further, the punching cutter 11 is a circular cutter, and the waste dump hole 13 is a circular shape.

In this embodiment, as shown in fig. 2, after one-time punching is completed, the waste generated by punching the release film 15 is located in the waste self-discharging hole 13, and when the next-time punching is performed, the newly generated waste is pushed upwards until being discharged from the upper surface of the die body 1, so as to realize an automatic waste discharging process, the waste self-discharging hole 13 of the punching cutter 11 is gradually increased from bottom to top, and the inclination angle of the inner wall of the waste self-discharging hole 13 is about 6 °, so that the waste of the release film 15 can be discharged from the upper surface of the die body 1 better by the inclined arrangement; similarly, when the right side profile of the required small-size foam 14 is punched by the punching tool 9, foam waste 16 generated in the punching tool 9 is positioned in the waste self-discharging groove 12, and when the next punching is performed, the newly generated foam waste 16 pushes upwards generated last time until being discharged from the upper surface of the die body 1, so that an automatic waste discharge process is realized, and meanwhile, the waste self-discharging groove 12 is gradually increased from bottom to top, so that the occurrence of blockage of waste can be avoided, and the smoothness of waste discharge is ensured.

The foregoing description of the preferred embodiment of the utility model is not intended to limit the utility model in any way, but rather to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the utility model.

Claims (8)

1. The die-cutting die for the conductive foam with the film comprises a die body (1) arranged on a punch press, wherein the lower part of the die body (1) is used for the conductive foam with the film (18) to pass through, and is characterized in that a U-shaped groove (10) is formed in the lower surface of the die body (1), a die-cutting tool (9) matched with the profile structure of one side of a die-cutting product is arranged in the U-shaped groove (10), a linear mirror surface tool (3) matched with the profile structure of the other side of the die-cutting product is arranged on the side surface of the U-shaped groove (10), and punching tools (11) positioned at two sides of the U-shaped groove (10) are arranged in the length direction of the die body (1); the punching cutter (9) is formed by sequentially connecting a first bending part (7), a second bending part (6), a first straight line part (5) and a second straight line part (8), wherein the first bending part (7) and the second bending part (6) are symmetrically arranged along the axis of the width direction of the die body (1), the first straight line part (5) is connected with two first bending parts (7), the second straight line part (8) is connected with two first bending parts (7), and the bending parts of the two second bending parts (6) are matched with the first straight line part (5) and one side profile of a punched product.

2. The punching die for the conductive foam with the film according to claim 1, wherein a waste dump hole (13) is formed in the center of the punching tool (11), and the external dimension of the waste dump hole (13) is matched with the punching tool (11) and extends upwards to the upper surface of the die body (1).

3. A die-cutting die for conductive foam with film according to claim 2, wherein the size of the waste dump hole (13) increases from bottom to top.

4. The punching die for the conductive foam with the film according to claim 1, wherein a waste self-discharging groove (12) is formed in the center of the punching tool (9), the shape of the waste self-discharging groove (12) is matched with that of the punching tool (9), and the waste self-discharging groove extends upwards to the upper surface of the die body (1).

5. The die-cutting die for conductive foam with film as set forth in claim 4, wherein the size of said waste self-discharging slot (12) increases from bottom to top.

6. A die-cutting die for conductive foam with film according to any one of claims 2-4, characterized in that the punching tool (11) is a circular tool, and the waste dump hole (13) is a circle.

7. The punching die for the conductive foam with the film according to claim 1, wherein a positioning column (2) positioned on the die body (1) is arranged above the punching tool (11).

8. The punching die for the conductive foam with the film according to claim 1, wherein the conductive foam with the film (18) comprises a strip-shaped release film (15) and a conductive foam (17), and the conductive foam (17) is adhered to the surface of the release film (15) along the length direction of the conductive foam.