CN211330935U

CN211330935U - Punching die

Info

Publication number: CN211330935U
Application number: CN201921594262.XU
Authority: CN
Inventors: 刘晓鹏; 蒋建国
Original assignee: Hopines Electronic Technology Shanghai Co Ltd
Current assignee: Hopines Electronic Technology Shanghai Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-08-25
Anticipated expiration: 2029-09-24

Abstract

The utility model relates to a punching die, including last mould and lower mould, go up the last needle that dashes that is equipped with of mould, be equipped with on the lower mould with dash the die cavity that the needle matches, be equipped with on the dash needle along dashing the through-hole that the needle axis direction runs through to the axis direction of through-hole with the axial direction parallel of dashing the needle. Compared with the prior art, the utility model discloses a set up the through-hole on dashing the needle for when actual operating condition, go up the die cavity closure of mould towards the needle and lower mould and can not cause vacuum state, thereby solved the problem that die-cut waste material was taken out by towards the needle, had advantages such as simple structure, application scope are wide, production efficiency is high, the die-cut yield of product height.

Description

Punching die

Technical Field

The utility model belongs to the technical field of the punching press technique and specifically relates to a punching die is related to.

Background

Stamping is a forming method in which a press and a die are used to apply external force to a plate, a strip, a pipe, a profile, etc. to cause separation or plastic deformation, thereby obtaining a workpiece of a desired shape and size. The stamping die is a special tool for processing materials into required stamping parts in batches, and is arranged on a press machine when in use, and the die drives an upper die and a lower die to open and close under the action of stamping power to process the materials, such as punching and the like.

In the existing punching process, a punching die comprises an upper die and a lower die, wherein the upper die is provided with a punching needle, the lower die is a cavity and is in a non-working state, the upper die and the lower die are in a separated state, a material is placed in the middle, when the punching die is in a working state, the lower die and the upper die are assembled, the punching needle of the upper die enters the cavity of the lower die, and then the waste material of the material at the position of the punching needle is punched into the cavity. In order to ensure that the material can be punched, the size of the cavity is substantially 0.03mm larger than that of the punch pin, so that the space between the punch pin and the cavity is substantially vacuum when the die is closed, which causes a problem: the punching needle can lead to die-cut material waste not to remain in the die cavity because atmospheric pressure problem leaves the die cavity in the twinkling of an eye, but follows the drift and takes out the die cavity and follow the drift, leads to die-cut bad of next mould, and the waste plenty of time of material waste on the clearance drift reduces production efficiency, consumes manpower and materials.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a punching die for overcoming the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the punching die comprises an upper die and a lower die, wherein a punching needle is arranged on the upper die, a cavity matched with the punching needle is formed in the lower die, and a through hole penetrating along the axial direction of the punching needle is formed in the punching needle.

Preferably, the axial direction of the through hole is parallel to the axial direction of the punch pin.

The punching needle is provided with a plurality of through holes.

Preferably, the punch pin is provided with 1 through hole.

The through holes are circular through holes with the diameter not more than 1 mm.

Preferably, the through hole is a circular through hole with a diameter of 1 mm.

The through hole is arranged in the middle of the punching needle.

Along any axial section, the contour dimension of the punching needle is 0.03mm smaller than the contour dimension of the cavity.

The utility model discloses a theory of operation does:

the utility model discloses set up a through-hole that link up in the upper and lower surface of impact needle on the impact needle of last mould, atmosphere is connected to through-hole one end, gas passage or pressure balance passageway have been formed, during actual operating condition, it is die-cut with the lower mould die cavity closure to go up the mould impact needle, the equal atmosphere that communicates in surface about the die-cut waste material, can not form the vacuum between impact needle and the waste material, consequently, the waste material can not be taken out by the impact needle, thereby avoided needing the manual work to clear away the waste material on the impact needle, the production efficiency is greatly improved, the die-cut yield has been promoted.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the structure is simple, only the through hole is arranged on the existing punching needle, and the matching installation of the existing punching needle and the upper die is not influenced, so that the existing punching needle can be improved, the die is convenient to process, and the application range is wide;

(2) die-cut yield is high, the utility model discloses the material tape waste material problem has been solved completely, production efficiency is high to practice thrift the plenty of time.

Drawings

FIG. 1 is a schematic top view of a lower mold of the prior art;

FIG. 2 is a schematic cross-sectional view of a lower mold in the prior art;

FIG. 3 is a schematic top view of a prior art upper die mold;

FIG. 4 is a schematic cross-sectional view of a prior art upper die mold;

fig. 5 is a schematic top view of the upper mold of the present invention;

fig. 6 is a schematic cross-sectional structure view of the upper die mold of the present invention;

in the figure, 1 is an upper die, 2 is a lower die, 3 is a punch pin, 4 is a cavity, and 5 is a through hole.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Comparative example

The comparative example is a punching die in the prior art, and comprises an upper die 1 and a lower die 2, wherein a cavity 4 matched with a punching needle 3 is arranged on the lower die 2, as shown in fig. 1 and 2, the punching needle 3 is arranged on the upper die 1, as shown in fig. 3 and 4, the upper die 1 and the lower die 2 are in a separated state, a material is placed in the middle at the moment, when the upper die 1 and the lower die 2 are in a working state, the lower die 2 and the upper die 1 are matched, the punching needle 3 of the upper die 1 enters the cavity 4 of the lower die 2, then the waste material at the position of the punching needle 3 is punched into the cavity 4, and in order to ensure that the material can be punched, the contour dimension of the punching needle 3 is 0.03mm smaller than that of the cavity 4 along any axial section. Therefore, when the punching needle 3 enters the cavity 4 for punching, the space between the punching needle 3 and the cavity 4 is basically in a vacuum state, and the punching material waste does not remain in the cavity 4 but is taken out of the cavity 4 along with the punch to follow the punch at the moment that the punching needle 3 leaves the cavity 4 due to air pressure problem, so that the punching of the next die is poor.

Examples

In order to solve the problem that the punching pin 3 has waste materials in the die in the comparative example, the upper die 1 of the punching die in the prior art is improved in the present embodiment, as shown in fig. 5 and 6, and more specifically, the punching pin 3 of the upper die 1 is structurally improved, 1 through hole 5 penetrating along the axial direction of the punching pin 3 is provided in the punching pin 3, and the axial direction of the through hole 5 is parallel to the axial direction of the punching pin 3, the through hole 5 is a circular through hole 5 with a diameter of 1mm, and the through hole 5 is provided in the middle of the punching pin 3. Through opening a through-hole 5 that is less than 1mm diameter in the centre of towards needle 3 for when actual operating condition, go up mould 1 and dash needle 3 and lower mould 2 die cavity 4 closed can not cause the vacuum state, thereby make the waste material can not be because pressure differential is taken out by towards needle 3, influence next process of punching a hole, thereby promoted die-cut yield greatly.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. The punching die is characterized by comprising an upper die and a lower die, wherein a punching needle is arranged on the upper die, a cavity matched with the punching needle is formed in the lower die, and a through hole penetrating along the axial direction of the punching needle is formed in the punching needle.

2. The punching die according to claim 1, wherein an axial direction of said through hole is parallel to an axial direction of said punch pin.

3. The punching die of claim 2 wherein said punch pin is provided with a plurality of through holes.

4. The punching die of claim 3, wherein 1 through hole is provided in said punch pin.

5. The punching die of claim 2, wherein said through hole is a circular through hole having a diameter of not more than 1 mm.

6. The punching die according to claim 5, wherein said through hole is a circular through hole having a diameter of 1 mm.

7. The punching die of claim 2, wherein said through hole is provided in the center of said punch pin.

8. A punch die according to claim 1, wherein the punch pin has a profile dimension which is 0.03mm smaller than the profile dimension of the cavity in any axial cross-section.