CN203526527U

CN203526527U - Novel ejector pin sleeve for mold

Info

Publication number: CN203526527U
Application number: CN201320734013.2U
Authority: CN
Inventors: 李勇
Original assignee: ZHAOQING FENGCHI PRECISION METALWORK CO Ltd
Current assignee: ZHAOQING FENGCHI PRECISION METALWORK CO Ltd
Priority date: 2013-11-20
Filing date: 2013-11-20
Publication date: 2014-04-09
Anticipated expiration: 2023-11-20

Abstract

The utility model relates to a novel ejector pin sleeve for a mold for aluminum alloy casting in the technical field of machine casting. The ejector pin sleeve is tubular in shape, is arranged in a lower mold and vertically penetrates through the lower mold; an ejector pin perpendicularly penetrates through the ejector pin sleeve; and the ejector pin sleeve, the ejector pin, an upper mold and the lower mold form a closed cavity for manufacturing aluminum alloy castings. The ejector pin sleeve is arranged in the lower mold, and the ejector pin sleeve is only required to be replaced when being damaged, so that the loss caused by scrapping of the whole mold is avoided, and the cost is saved; the ejector pin sleeve can be made of a material which is high in strength, good in abrasive resistance and good in lubricity, so that the demolding process of the aluminum alloy castings is smooth and efficient, and external and internal injuries are reduced.

Description

A kind of mould Novel top needle guard

Technical field

The utility model relates to machine casting technical field, specifically refers to a kind of mould Novel top needle guard of used in aluminium alloy casting.

Background technology

The various vehicles, as the popularity rates such as automobile, motorcycle improve day by day, have facilitated people's trip.The speed of the vehicles is also more and more faster.Among this, except scientific and technological development, also have benefited from the various spare and accessory parts lightweights and the high strength that use in the vehicles, aluminium alloy castings is being played the part of key player therein.

The production of aluminium alloy castings, be unable to do without mould and knock-out gear, and suitable mould has guaranteed the external shape of aluminium alloy castings and the uniformity of design.Good knock-out gear has improved the surface smoothness of aluminium alloy castings, reduces post-production workload; The internal injury and the wound that while also having reduced aluminium alloy castings depanning, have easily caused, improve product percent of pass.

Generally, mould comprises mold and bed die, after aluminium alloy castings has been cast, first opens mold, then takes out foundry goods.For some baroque foundry goods, as the parts of automobile engine: gray iron, piston, inlet manifold, support etc., inside and outside complex-shaped, light is opened mold can not take out foundry goods smoothly, as taken out by force foundry goods, can cause cast(ing) surface damage, serious meeting causes foundry goods to scrap.

In order to solve aluminium alloy castings, go out smoothly modulus problem, prior art is drilled with centre hole at bed die, and thimble is set, and foundry goods is ejected.Because gap between thimble and die ejector pin hole is little, mold temperature is high, and often, easily the centre hole of mold damage, once die ejector pin hole is damaged, is difficult to repair, and causes mould to be scrapped, and loses huge in friction.

Summary of the invention

The problems referred to above that exist in order to solve prior art, the utility model proposes a kind of mould Novel top needle guard simple in structure, easy to use.

The technical scheme that the utility model is used is as follows:

A mould Novel top needle guard, its profile is tubular, and described tailstock barrel is arranged among bed die and vertically runs through up and down bed die, and a thimble vertically passes from tailstock barrel; Described tailstock barrel and thimble, mold, bed die form the die cavity for the manufacture of aluminium alloy castings of sealing, and the lower end of thimble connects board.

Moving up and down that board is thimble provides power.The material of tailstock barrel is metal material, comprises copper, stainless steel, No. 45 steel.

The beneficial effects of the utility model are:

Tailstock barrel is set among bed die, after tailstock barrel damages, as long as again change, the loss of having avoided whole mould to scrap, cost-saving.Tailstock barrel can be selected high strength, wearability is good, lubricity is good material, makes that aluminium alloy castings goes out that mold process is smooth and easy, high efficiency, reduction wound and internal injury.

Accompanying drawing explanation

Fig. 1 is schematic diagram before the die sinking of prior art aluminium alloy castings.

To be a kind of mould be enclosed within schematic diagram before aluminium alloy castings die sinking with Novel thimble to Fig. 2.

To be a kind of mould be enclosed within schematic diagram after aluminium alloy castings die sinking with Novel thimble to Fig. 3.

1-mold in figure, 2-aluminium alloy castings, 3-bed die, 4-thimble, 5-tailstock barrel, 6-board.

The specific embodiment

Fig. 1 is schematic diagram before the die sinking of prior art aluminium alloy castings, visible in figure, thimble is arranged in bed die, thimble and mold, bed die three form the die cavity for the manufacture of aluminium alloy castings of sealing, the aluminum alloy materials that is liquid condition under high temperature, under the effect of self gravitation, inject and be full of die cavity, open mould after cooling can obtain aluminium alloy castings.

To be a kind of mould be enclosed within schematic diagram before aluminium alloy castings die sinking with Novel thimble to Fig. 2.To be a kind of mould be enclosed within schematic diagram after aluminium alloy castings die sinking with Novel thimble to Fig. 3.A mould Novel top needle guard, is arranged among bed die, and thimble passes from tailstock barrel, and tailstock barrel and thimble, mold, bed die form the die cavity for the manufacture of aluminium alloy castings of sealing, and the lower end of thimble connects board.

Aluminium alloy castings die sinking process:

1, the machine mold of slinging;

2, board promotes thimble, thimble jack-up aluminium alloy castings;

3, the aluminium alloy castings of slinging, moves to and deposits a little;

4, thimble resets, and mold declines, and carries out aluminium alloy castings manufacturing operation next time.

Claims

1. a mould Novel top needle guard, its profile is tubular, it is characterized in that: described tailstock barrel is arranged among bed die and vertically runs through up and down bed die, and a thimble vertically passes from tailstock barrel; Described tailstock barrel and thimble, mold, bed die form the die cavity for the manufacture of aluminium alloy castings of sealing, and the lower end of thimble connects board.