CN2335718Y

CN2335718Y - Non-ferrous metal hot extrusion die

Info

Publication number: CN2335718Y
Application number: CN 98228170
Authority: CN
Inventors: 钟援朝
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-19
Filing date: 1998-06-19
Publication date: 1999-09-01
Anticipated expiration: 2008-06-19

Abstract

The utility model discloses a non-ferrous metal hot extrusion die. The die mainly comprises a die holder 1, a die cushion 2 and a die core 3. The utility model is characterized in that the die core 3 is arranged in a hollow chamber of the die holder 1, and a turning corner of the bottom of a flow guiding slot utilizes a circular arc for transition. Compared with the existing dies, the die core of the utility model is assembled and disassembled conveniently, a cutting edge is convenient to repair, stress concentration is not easy to generate in use, and the utility model has the advantage of long service life.

Description

A kind of non-ferrous metal hot-extrusion mold

The utility model relates to the hot-extrusion mold of a kind of non-ferrous metal (aluminium, copper, magnesium, titanium, nickel etc.), specifically is the plane mould of producing solid profile.

The existing plane mould that is processed with the non-ferrous metal section bar of China mostly is made up of pattern and die-cushion at present, this flat-die since body and cutting edge (also claiming " work zone ") be structure as a whole, when cutting edge in use wear and tear overproof after, entire die all will be scrapped, waste bigger, utility model patent ZL93239755.7 has structurally increased core rod, cutting edge is separated with die ontology, after the cutting edge use is overproof, it is reusable again only to need to change core rod, though this new structure has solved the problems referred to above to a certain extent, in use still have following shortcoming: (1) core rod is installed, dismounting is inconvenient; (2) cutting edge is repaired difficulty; (3) the guiding gutter bottom comers of core rod is the right angle, easily produces stress and concentrates.

The purpose of this utility model is to provide a kind of non-ferrous metal hot-extrusion mold, and the core rod of this mould is installed, convenient disassembly, and its cutting edge is easy to repair, and the difficult stress that produces in the guiding gutter bottom comers place of core rod is concentrated.

For achieving the above object, the solution that the utility model adopts is: core rod is installed in the cavity above the die holder, and the last plane of plane and die holder is fair it on.

In the such scheme, the guiding gutter bottom comers place of core rod adopts arc transition.

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

Fig. 1 is a profilograph of the present utility model.

As can be seen from Figure 1, the utility model flat-die is by die holder 1, die-cushion 2 and core rod 3 are formed, core rod 3 is installed in the cavity above the die holder 1, polish after the last plane of core rod 3 and die holder 1 assembling, locate with pin 4 and die holder 1 bottom surface of core rod 3, and be connected with die holder 1 by bolt 5, locate with pin 6 between die-cushion 2 and the die holder 1, and firmly connect with bolt 7, inventive point of the present utility model is: core rod 3 is positioned at the cavity above the die holder 1, and after core rod used a period of time overproof, it was very convenient to change core rod like this, simultaneously also be convenient to repair core rod cutting edge 8, another characteristics of the present utility model are: core rod 3 is processed into the form that band once is out of shape guiding gutter, the bottom comers arc transition, and such one is to be convenient to molten metal flow, the 2nd, the corner is difficult for producing stress concentrates, thereby prolongs the service life of core rod 3.

The utility model is selected for use wear-resisting, the refractory steel that deflection is little is made, its processing, want the relative position of strict guarantee pin-and-hole during installation, the concrete installation, use is such: will process qualified die holder 1, die-cushion 2, core rod 3, alignment pin 4,6 and bolt 5,7 as shown in Figure 1 the assembling after, the die sleeve preheating of promptly packing into, use on the machine, after using section bar that a period of time extrudes overproof, can change new core rod 3 continues to use, the method of concrete die change core 3 is: after mould that will die change core 3 cooks off the defective material that depends on the mould with buck, the loosening bolt 7 that takes off, die holder 1 is upwards ejected, and then the loosening bolt 5 that takes off, core rod 3 is upwards ejected, change core rod 3.

During the utility model actual production, according to the section difference of required fabircated shapes, the section of mould only is that example is illustrated with Fig. 1 in this specification also with difference.

The utility model since core rod be installed in the cavity above the die holder, and the guiding gutter bottom comers of core rod adopts arc transition, thereby core rod of the present utility model is installed, convenient disassembly, and its cutting edge is easy to repair, and be difficult for producing stress when using and concentrate, the life-span is longer.

Claims

1. non-ferrous metal hot-extrusion mold, it mainly comprises die holder, die-cushion and core rod, it is characterized in that: core rod is positioned at the cavity above the die holder, and last plane of plane and die holder maintains an equal level on it.

2. a kind of non-ferrous metal hot-extrusion mold according to claim 1 is characterized in that: the guiding gutter bottom comers place of core rod adopts arc transition.