CN2344107Y

CN2344107Y - New type aluminium alloy squeezing die

Info

Publication number: CN2344107Y
Application number: CN 98229209
Authority: CN
Inventors: 谢增厚
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-31
Filing date: 1998-07-31
Publication date: 1999-10-20
Anticipated expiration: 2008-07-31

Abstract

The utility model discloses a novel aluminium alloy combined squeezing die. The squeezing die is composed of an upper die, a middle die, a lower die and a die sheet. The upper die is provided with a feed port, the middle die is provided with a welding chamber and a diversion hole, the lower die is provided with a shaped orifice and a manufactured product outlet, and the three dies are all positioned by a rabbet and a male pin. Compared with an original combined die, the utility model can obviously improve the flow uniformity of each position when metal is in final deformation, and successful probabilities of once die test are greatly enhanced; therefore, the waste of metal material and man-hour caused by die maintenance and delayed production loss are reduced.

Description

A kind of novel aluminum alloy combination extrusion die

The utility model relates to a kind of novel aluminum alloy combination extrusion die.

Produce aluminium alloy hollow profile and tubing at present and adopt combination die more, though having, this combination die can change, easily processing, low-cost be convenient to separate advantage such as defective material, but because structurally the seam chamber will hold the charging hole of patrix, its flat shape is limited to, therefore the uniformity of each flowing velocity is mainly controlled by the active length in type hole during metal forming, so the active length required precision in type hole is very high, actual design time limit difficulty reaches requirement (experience that depends on is calculated more), cause metal (aluminium alloy) deformation uniformity poor like this, need just can make flow rate of metal be tending towards each unanimity through the adjustment that repeatedly repairs a die, the complex-shaped asymmetric section bar of special pair cross-section is all the more so, owing to there is above-mentioned this situation, so in the technology of producing combination die, to improve the mould antifatigue, the nitrogen treatment of wearing and tearing is placed on after die trial repairs a die, this brings great inconvenience to Mould Machining, must be before repairing a die after the die trial simultaneously through the soda boiling mould, remove residual aluminium, the cleaning die cavity has caused the waste and artificial waste of time of aluminium alloy again.

The purpose of this utility model is to provide a kind of novel aluminum alloy combination extrusion die, this extrusion die can improve the uniformity of metal flow, make metal final molding deformation process be tending towards even, and excessively do not depend on the inhibition of work zone, thereby significantly improve the die trial probability of successful one time, and then reduce the repair a die metal material that brings and the waste in man-hour, and the loss that delays production therefrom.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a front view of the present utility model.

Fig. 2 is a side cutaway view of the present utility model.

From Fig. 1, Fig. 2 can find out, the utility model is by patrix 1, middle mould 2, counterdie 3, matrix 4 (type hole dummy slider) and alignment pin 5 are formed, adopt seam and alignment pin 5 location between three moulds respectively, accurate to guarantee contraposition, as can be seen from Figure, patrix 1 comprises charging hole 6, middle mould 2 comprises seam chamber 7 and pod apertures 8, counterdie 3 comprises that type hole 9 and goods portal 10, inventive point of the present utility model is the counterdie of former combination die is divided into promptly middle mould of two parts and counterdie, and designed pod apertures 8, this pod apertures 8 is positioned at the bottom in seam chamber 7, its shape is similar to type hole 9, metal (aluminium alloy) can be through a preformed after seam like this, and then by type hole 9 formation goods, because preformed has made the cross section metal shape similar in appearance to the type hole, so metal each one of distortion during by the type hole all reaches unanimity, speed has obtained good adjustment, so charging hole 6, the mismachining tolerance in seam chamber 7 is to the influence of product molding, after preformed, becoming very small, so bending of extruded product and turn round that twisting becomes controls easily, at this moment reasonably land length design, just can very control the uniformity of each metal flow speed effectively, and then can improve the success rate of a die trial, particularly can effectively solve " repeatability " problem of Mould Machining.

The type hole of counterdie 3 is made of removable matrix 4 in the combinations thereof mould, need only change matrix 4 after type hole 9 is overproof, and need not changes whole counterdie, thereby reach the purpose in economical with materials and man-hour.

Operation principle of the present invention also is applicable to plane section bar mould.

The utility model compared with prior art has following advantage: (1) has obviously improved metal The uniformity that during final distortion flow in each position significantly improves the success rate of a die trial, subtracts The metal material that having lacked repairs a die brings and the waste in man-hour and the loss that delays therefrom production; (2) can effectively solve " repeatability " problem of Mould Machining; (3) so that the seam chamber with lead The easy to process easy row of discharge orifice, machining accuracy and surface roughness are greatly improved, its result Be the frictional resistance that has reduced deformable metal, metal forming is more prone to.

Claims

1. a novel aluminum alloy makes up extrusion die, it comprises upper die and lower die, matrix and alignment pin, wherein upper die and lower die are by seam and alignment pin location, matrix is embedded in the counterdie, it is characterized in that: counterdie is divided into promptly middle mould of two parts and counterdie, in mould comprise the seam chamber and be positioned at its shape of seam chamber bottom pod apertures similar to the type hole, counterdie comprises that type hole and goods export, patrix comprises charging hole.