CN205798381U - A kind of aluminum-alloy wheel mold top holder of improvement - Google Patents

Abstract

A kind of aluminum-alloy wheel mold top holder of improvement, by backform and withdrawing pattern form, it is characterized in that: the backform at wheel rim position adds down withdrawing pattern, the width S >=3mm, highly L >=5mm of described withdrawing pattern, drafting angle >=2 °, by drafting angle, increase the frictional force between backform and wheel, thus play the effect of Qi Mo, and the order not interfering with wheel cools down, be conducive to improving the yield rate of wheel blank.The structure of falling withdrawing pattern of this backform solves large scale wheel and opens the problem of mould difficulty, improves die-casting blank yield rate, reduces production difficulty and the labor intensity of employee, shortens the production cycle simultaneously, improve production efficiency, saved production cost input.

Description

A kind of aluminum-alloy wheel mold top holder of improvement

Technical field

This utility model relates to Mould design and manufacturing field, the aluminum-alloy wheel mould top of a kind of improvement Mould.

Background technology

Wheel is the important component part of automobile, aluminum-alloy wheel have lightweight, inertia resistance is little, it is high to make precision, Perfect heat-dissipating, the advantage such as attractive in appearance, be conducive to improving the linear driving performance of automobile, alleviate tire drag, so at present Large-sized steel wheel is attempted using aluminum-alloy wheel instead, and this type of aluminum-alloy wheel weight is relatively big, relies on and existing opens modular ring mode Carry out Qi Mo, Qi Mo relatively difficult, need to increase a plurality of zero degree and open modular ring and just can open mould, but a plurality of zero degree opens modular ring and can affect wheel Son order cooling, thus cause die-casting blank percent defective higher.Normally open mould in order to realize wheel, be necessary for increasing pressurize or Person extends the cool time of mould, increases the frictional force between backform and wheel, but production cost increases, and efficiency reduces.

Utility model content

This utility model is to solve above-mentioned technical problem, it is provided that the aluminum-alloy wheel mold top holder of a kind of improvement.

This utility model be the technical scheme is that the aluminum-alloy wheel mold top holder of a kind of improvement, by backform and fall Withdrawing pattern forms, and it is characterized in that: the backform at wheel rim position adds down withdrawing pattern, the width S >=3mm, highly L of described withdrawing pattern >=5mm, drafting angle >=2 °, by drafting angle, increase the frictional force between backform and wheel, thus play Qi Mo's Effect, and do not interfere with the order cooling of wheel, be conducive to improving the yield rate of wheel blank.

Advantage of the present utility model: this die casting backform improved solves large scale wheel and opens the problem of mould difficulty, Improve die-casting blank yield rate, reduce production difficulty and the labor intensity of employee, shorten the production cycle simultaneously, improve life Produce efficiency, save production cost input.

Accompanying drawing explanation

Fig. 1 is the existing aluminum-alloy wheel mold top holder schematic diagram opening modular ring mode.

Fig. 2 is partial enlarged drawing at B in Fig. 1.

Fig. 3 is the aluminum-alloy wheel mold top holder schematic diagram of a kind of improvement of this utility model.

Fig. 4 is partial enlarged drawing at C in Fig. 3.

In figure: 1, zero degree opens modular ring, 2, backform, 3, fall withdrawing pattern.

Detailed description of the invention

With example, this utility model is further illustrated below in conjunction with the accompanying drawings.

Fig. 1 is the existing aluminum-alloy wheel mold top holder opening modular ring mode, opens modular ring 1 and backform 2 including zero degree, by zero Degree opens the frictional force between modular ring 1 and backform 2 and realizes opening mould, owing to large scale wheel is heavier, so needing to increase a plurality of zero Degree opens modular ring 1 just can open mould, but a plurality of zero degree opens modular ring 1 and can affect wheel order cooling so that wheel blank yield rate reduces.

Fig. 3 is the aluminum-alloy wheel mold top holder of a kind of improvement, by backform 2 and withdrawing pattern 3 form, it is characterized in that: at car The backform 2 at wheel rim position adds down withdrawing pattern 3, described fall withdrawing pattern 3 width S >=3mm, highly L >=5mm, drafting angle >= 2°。

Claims (1)

1. improve an aluminum-alloy wheel mold top holder, by backform and withdrawing pattern form, it is characterized in that: at wheel rim position Backform (1) add down withdrawing pattern (2), described fall withdrawing pattern (2) width S >=3mm, highly L >=5mm, the A of falling drafting angle >=2 °.