CN209810931U

CN209810931U - Durable drawing die

Info

Publication number: CN209810931U
Application number: CN201920234873.7U
Authority: CN
Inventors: 刘成凡
Original assignee: Changshu Zhongshan Tungsten Technology Co Ltd
Current assignee: Changshu Zhongshan Tungsten Technology Co Ltd
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2019-12-20
Anticipated expiration: 2029-02-25

Abstract

The utility model discloses a durable drawing die, include: the male die, the male die fixing plate, the guide sleeve and the female die; the male die is fixed on the male die fixing plate; the middle part of the female die is provided with an integrated forming cavity, the guide sleeve is fixed at one end of the female die by taking the integrated forming cavity as the center, and the inner diameter of the guide sleeve is larger than that of the integrated forming cavity; the male die is opposite to one end of the female die with the guide sleeve and matched with the integrated forming cavity. The utility model relates to a durable drawing die, simple structure, reasonable in design, it is through the design of uide bushing, die and die structure, on the one hand make the drawing die cavity become the integral type shaping cavity, can effectively solve the quality problem that leads to because of the flash around the tensile product; on the other hand, the stability of the connecting structure between the outer die sleeve and the hard alloy layer is effectively improved, the improvement of the quality of a stretched product and the service life of a stretching die are facilitated, and the practicability is high.

Description

Durable drawing die

Technical Field

The utility model relates to a metal mold field especially relates to a durable drawing die.

Background

In modern industry, the mould is the key that influences the quality of product, and simultaneously, the cost of mould and manufacturing cycle are all longer, therefore have higher requirement to the quality of mould itself.

The stretching die in the prior art comprises an upper die and a lower die, wherein a forming cavity is formed by the upper die and the lower die, the upper die is provided with a guide column, the lower die is provided with a guide groove matched with the guide column, and a hard alloy layer is covered on the inner surface of the forming cavity formed by the upper die and the lower die.

The technical problems of the prior art are as follows: 1. the forming cavity of the stretching die is of a split structure, a certain gap exists between the contact surfaces of the upper die and the lower die, and when the die is used for stretching a product, raw materials are extruded into the joint surface, so that the qualified rate of the finished product is influenced; 2. the hard alloy layer on the inner surface of the existing forming cavity is directly attached to the inner surface of the forming cavity by adopting a binding agent, and after the hard alloy layer is used for many times, the binding layer is easy to open due to vibration or frictional heat generation in the stretching process, so that the qualification rate of products is influenced, the abrasion degree of the hard alloy layer is increased, and the service life of a stretching die is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a durable tensile mould, can effectively solve the above-mentioned shortcoming that current tensile mould exists.

In order to solve the technical problem, the utility model discloses a technical scheme be: providing a durable drawing die comprising: the male die, the male die fixing plate, the guide sleeve and the female die; the male die is fixed on the male die fixing plate; the middle part of the female die is provided with an integrated forming cavity, the guide sleeve is fixed at one end of the female die by taking the integrated forming cavity as the center, and the inner diameter of the guide sleeve is larger than that of the integrated forming cavity; the male die is opposite to one end of the female die with the guide sleeve and matched with the integrated forming cavity.

In a preferred embodiment of the present invention, the female mold comprises an outer mold sleeve and a hard alloy layer; the outer die sleeve is provided with a guide sleeve, and the outer die sleeve is provided with a groove at one end facing the guide sleeve, and a stepped structure with the height reduced from the outer side to one side of the integrated forming cavity is formed by taking the groove as a boundary; the hard alloy layer is of a cylindrical structure with one end provided with a horizontal outward extending edge, and the end part of the extending edge is provided with a clamping block matched with the groove; the hard alloy layer covers the step surface of the outer die sleeve, the cylindrical structure of the hard alloy layer is integrally bonded with the inner side surface of the outer die sleeve, and the fixture block of the hard alloy layer is matched with the groove and integrally bonded to form the integrated forming cavity.

In a preferred embodiment of the present invention, the thickness of the extending edge is equal to the height difference of the stepped layer at the end of the outer mold sleeve.

In a preferred embodiment of the present invention, the hard alloy layer has a limiting chamfer with an outward convex arc structure at the opening of one end of the extending edge.

In a preferred embodiment of the present invention, the inner diameter of the top end of the limiting chamfer is smaller than or equal to the inner diameter of the guide sleeve.

In a preferred embodiment of the present invention, the distance from the groove to the integral forming cavity is 1/3-1/2 of the thickness of the outer mold sleeve.

In a preferred embodiment of the present invention, a plurality of heat dissipation channels are disposed in the outer mold sleeve.

In a preferred embodiment of the present invention, the heat dissipation channel includes a vertical heat dissipation groove and a horizontal heat dissipation groove; the vertical radiating grooves are vertically distributed along one side of the hard alloy layer, one ends of the horizontal radiating grooves are communicated with the vertical radiating grooves, and the other ends of the horizontal radiating grooves penetrate through the outer die sleeve to be communicated with the outside.

In a preferred embodiment of the present invention, the number of the vertical heat dissipation grooves is more than 2; the number of the horizontal radiating grooves connected with each vertical radiating groove is more than 3.

In a preferred embodiment of the present invention, a punch pad is detachably mounted between the punch retainer and the punch.

The utility model has the advantages that: the utility model relates to a durable drawing die, simple structure, reasonable in design, it is through the design of uide bushing, die and die structure, on the one hand make the drawing die cavity become the integral type shaping cavity, can effectively solve the quality problem that leads to because of the flash around the tensile product; on the other hand, the stability of the connecting structure between the outer die sleeve and the hard alloy layer is effectively improved, the improvement of the quality of a stretched product and the service life of a stretching die are facilitated, and the practicability is high.

Drawings

Fig. 1 is a schematic perspective view of a preferred embodiment of a durable drawing die according to the present invention;

FIG. 2 is a side cross-sectional schematic view of the outer die sleeve;

the parts in the drawings are numbered as follows: 1. the heat dissipation structure comprises a male die, 2 parts of a male die fixing plate, 3 parts of a male die backing plate, 4 parts of a guide sleeve, 5 parts of a female die, 6 parts of an outer die sleeve, 7 parts of a hard alloy layer, 61 parts of a groove, 62 parts of a vertical heat dissipation channel, 63 parts of a horizontal heat dissipation channel, 71 parts of an extending edge, 72 parts of a fixture block and 73 parts of a limiting chamfer.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1 and 2, an embodiment of the present invention includes:

example 1

The utility model discloses a durable drawing die, include: the device comprises a male die 1, a male die fixing plate 2, a guide sleeve 4 and a female die 5.

The male die 1 is fixed on the male die fixing plate 2, a male die base plate 3 is detachably mounted between the male die fixing plate 2 and the male die 1, and the width of the male die base plate 3 is equal to that of the male die 1 and used for adjusting the height of the male die 1 according to the requirements of different stretching products.

The middle part of die 5 has the integral type profiled cavity, uide bushing 4 with the integral type profiled cavity is fixed as the center the one end of die 5, just the internal diameter of uide bushing 4 is greater than the internal diameter of integral type profiled cavity for tensile prepositioning. The male die 1 is opposite to one end of the female die 5 with the guide sleeve 4 and matched with the integrated forming cavity.

Specifically, the female die 5 comprises an outer die sleeve 6 and a hard alloy layer 7. Wherein, one end of the outer die sleeve 6 facing the guide sleeve 4 is provided with a groove 61, and a stepped structure with the height decreasing from the outer side to one side of the integrated forming cavity is formed by taking the groove 61 as a boundary; the hard alloy layer 7 is a cylindrical structure with an extending edge 71 horizontally and outwards at one end, and a clamping block 72 matched with the groove 61 is arranged at the end part of the extending edge 71; the hard alloy layer 7 is covered on the step surface of the outer die sleeve 6, the cylindrical structure of the hard alloy layer is integrally bonded with the inner side surface of the outer die sleeve 6, and the fixture blocks 72 of the hard alloy layer are matched with the grooves 61 and integrally bonded to form the integrated forming cavity. Through adopting fixture block 72 and recess 61 matched with connected mode and metal binder to bond together earlier between carbide layer 7 and the outer die sleeve 6, be favorable to improving the fastness of connecting between the two, can effectively prevent the not hard alloy layer 7 that causes because of the vibration in the use at tensile mould not hard up to influence the quality of tensile product and the life of tensile mould.

The thickness of the extending edge 71 is equal to the height difference of the step layer at the end of the outer die sleeve 6, so that the end surface formed after the hard alloy layer 7 is matched with the outer die sleeve 6 is a horizontal plane.

A limiting chamfer 73 with an outward convex arc structure is arranged at the hole at one end of the hard alloy layer 7 with the extending edge 71, and the inner diameter of the top end of the limiting chamfer 73 is less than or equal to that of the guide sleeve 4.

The distance from the groove 61 to the integrated molding cavity is 1/3-1/2 of the thickness of the outer die sleeve 6.

And a plurality of heat dissipation channels are also arranged in the outer die sleeve 6. The heat dissipation channel comprises a vertical heat dissipation groove 62 and a horizontal heat dissipation groove 63; the vertical heat dissipation grooves 62 are vertically distributed along one side of the hard alloy layer 7, one end of each horizontal heat dissipation groove 63 is communicated with the vertical heat dissipation groove 62, and the other end of each horizontal heat dissipation groove passes through the outer die sleeve 6 to be communicated with the outside. Specifically, the number of the vertical heat dissipation grooves 62 is more than 2; the number of the horizontal heat dissipation grooves 63 connected to each of the vertical heat dissipation grooves 62 is 3 or more. Through the structural design of vertical radiating groove 62 and horizontal radiating groove 62, can be effectively with the heat that produces at the mould in tensile process derive to reduce tensile mould self temperature, can effectively prevent because of the high metallic bond that leads to of tensile mould temperature softens or life shortens, thereby influences the steadiness that carbide layer 7 bonded.

In addition, the material of the guide sleeve 4 is the same as that of the outer die sleeve 6.

The utility model relates to a durable drawing die has following advantage:

1. through the structural design of the guide sleeve and the female die, the stretching forming cavity is an integrated forming cavity, the problem of forming rate caused by flash around a stretched product is avoided, and the guide sleeve plays a role in stretching pre-positioning and is beneficial to improving the stretching forming rate;

2. through the structural design between the outer die sleeve and the hard alloy layer in the female die and the structural design of the heat dissipation channel in the outer die sleeve, on one hand, the stability of the connection structure between the outer die sleeve and the hard alloy layer can be effectively improved, and on the other hand, the softening of a metal binder or the reduction of the service life caused by high temperature can be effectively prevented, so that the stability of the connection between the hard alloy layer and the outer die sleeve is influenced, and further the quality of a stretched product and the service life of a stretching die are influenced;

3. through the structural design of the detachable convex die base plate, the height of the convex die can be adjusted according to the size of a stretched product, and therefore the application range of the stretching die is enlarged.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A durable drawing die, comprising: the male die, the male die fixing plate, the guide sleeve and the female die; the male die is fixed on the male die fixing plate; the middle part of the female die is provided with an integrated forming cavity, the guide sleeve is fixed at one end of the female die by taking the integrated forming cavity as the center, and the inner diameter of the guide sleeve is larger than that of the integrated forming cavity; the male die is opposite to one end of the female die with the guide sleeve and matched with the integrated forming cavity.

2. The durable drawing die of claim 1, wherein the female die comprises an outer die sleeve and a hard alloy layer; the outer die sleeve is provided with a guide sleeve, and the outer die sleeve is provided with a groove at one end facing the guide sleeve, and a stepped structure with the height reduced from the outer side to one side of the integrated forming cavity is formed by taking the groove as a boundary; the hard alloy layer is of a cylindrical structure with one end provided with a horizontal outward extending edge, and the end part of the extending edge is provided with a clamping block matched with the groove; the hard alloy layer covers the step surface of the outer die sleeve, the cylindrical structure of the hard alloy layer is integrally bonded with the inner side surface of the outer die sleeve, and the fixture block of the hard alloy layer is matched with the groove and integrally bonded to form the integrated forming cavity.

3. A durable drawing die as claimed in claim 2, wherein the thickness of the extended lip is equal to the height difference of the stepped layer at the end of the outer shell.

4. The durable drawing die of claim 3, wherein the hard alloy layer has a limiting chamfer with an outward convex arc structure at the opening of one end with the extending edge.

5. The durable drawing die of claim 4 wherein the inner diameter of the limiting chamfer tip is less than or equal to the inner diameter of the guide sleeve.

6. The durable drawing die of claim 2 wherein the groove is spaced from the integral forming cavity by a distance 1/3-1/2 of the outer die sleeve thickness.

7. A durable drawing die as claimed in claim 2, wherein a plurality of heat sink channels are provided in the outer die sleeve.

8. The durable drawing die of claim 7, wherein the heat dissipating channels comprise vertical heat dissipating slots and horizontal heat dissipating slots; the vertical radiating grooves are vertically distributed along one side of the hard alloy layer, one ends of the horizontal radiating grooves are communicated with the vertical radiating grooves, and the other ends of the horizontal radiating grooves penetrate through the outer die sleeve to be communicated with the outside.

9. The durable drawing die of claim 8, wherein the number of vertical heat sinks is 2 or more; the number of the horizontal radiating grooves connected with each vertical radiating groove is more than 3.

10. A durable drawing die as in claim 1, wherein a punch backing plate is removably mounted between the punch retainer and the punch.