CN210788642U

CN210788642U - Extrusion die with replaceable die core

Info

Publication number: CN210788642U
Application number: CN201920833290.6U
Authority: CN
Inventors: 袁名万; 欧福广
Original assignee: Sichuan Lande Industry Co ltd
Current assignee: Sichuan Lande Industry Co ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-06-19
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses an extrusion die of removable mold core, it includes die sleeve (1), die sleeve (1) centre bore position is equipped with mold core (2) that carbide made, is equipped with between the outer wall of mold core (2) and the inner wall of die sleeve (1) insert (3) that high plasticity high melting point material made. The utility model has the characteristics of increase of service life, reduce cost, removable mold core.

Description

Extrusion die with replaceable die core

Technical Field

The utility model relates to the technical field of mold, especially an extrusion die of removable mold core.

Background

In the process of extruding the aluminum profile, the quality of an extrusion die is directly related to the size precision and the shape of the aluminum profile, generally, the extrusion temperature is about 500 ℃, and the extrusion force of an extruder is at least 500 tons, so the extrusion die is scrapped due to the fact that the extrusion die is particularly easy to wear under high temperature and high pressure, the extrusion die in the prior art is integral (as shown in figure 2), a large number of dies are scrapped due to the fact that the size of a center hole exceeds the standard, and the production cost is quite high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide an increase of service life, reduce cost's extrusion die of removable mold core.

The purpose of the utility model is realized through the following technical scheme: the extrusion die with the replaceable die core comprises a die sleeve, wherein the die core is arranged at the central hole part of the die sleeve, and an insert is arranged between the outer wall of the die core and the inner wall of the die sleeve.

Further, the mold core is made of hard alloy, and the insert is made of high-plasticity high-melting-point material.

Further, the high-plasticity high-melting-point material is copper or a copper alloy.

Further, the insert is in transition fit with the outer wall of the mold core and the inner wall of the mold sleeve.

The utility model has the advantages of it is following: the die sleeve central hole part is provided with the replaceable die core and the replaceable insert, so that the service life of a single die is prolonged by one time compared with the service life of the whole die, the die sleeve can be repeatedly used, the production cost is reduced by 80 percent, and considerable economic benefit is obtained.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a prior art integral mold;

in the figure: 1-die sleeve, 2-die core and 3-insert.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1, the extrusion die with the replaceable die core comprises a die sleeve 1, wherein the die core 2 is arranged at the central hole part of the die sleeve 1, and an insert 3 is arranged between the outer wall of the die core 2 and the inner wall of the die sleeve 1.

Preferably, the core 2 is made of cemented carbide and the insert 3 is made of a high plastic high melting point material, more preferably copper or a copper alloy.

For the convenience of assembly, the insert 3 is in transition fit with the outer wall of the mold core 2 and the inner wall of the mold sleeve 1.

The utility model discloses an assembly process as follows: the insert 3 is processed to the size which can be in transition fit with the mold core 2 and the mold sleeve 1, then the mold core 2 and the insert 3 are sequentially assembled in the mold sleeve, finally, the insert is deformed by external force through a needle-shaped tool, the mold core 2 and the insert 3 are reliably fixed in the mold sleeve 1, and the mold core 2 can be permanently fixed in the mold under high pressure only through one-time extrusion process.

The utility model discloses a process is changed to the mold core as follows: after the die core 2 is worn and failed, the die core 2 and the insert 3 can be removed by ejecting the die core 2 from the discharge end to the feed end by using a simple hydraulic press or other pressure equipment; if the insert 3 is not ejected, the insert 3 can be quickly turned by a lathe, and then the insert 3 can be removed.

Claims

1. The utility model provides an extrusion die of removable mold core, it includes die sleeve (1), its characterized in that: the die is characterized in that a die core (2) is arranged at the central hole of the die sleeve (1), and an insert (3) is arranged between the outer wall of the die core (2) and the inner wall of the die sleeve (1).

2. The core-replaceable extrusion die of claim 1, wherein: the mold core (2) is made of hard alloy, and the insert (3) is made of copper or copper alloy material.

3. The core-replaceable extrusion die of claim 1, wherein: the insert (3) is in transition fit with the outer wall of the mold core (2) and the inner wall of the mold sleeve (1).