玩具车轮胎气动推出注射模

气动推出注射模是注射模中的一种典型结构，它是利用压缩空气推出塑件；玩具车中的轮胎是结构独特而常用的一种塑件。用注射成型，脱模方法就是气动脱模。轮胎气动推出模的常用结构是由高压空气推开锥形阀门进入型腔，将塑件强行推出。阀门由弹簧复位。本文介绍另一种简单实用的气阀结构，经实践检验，非常稳定可靠。

Toy-car tyre Injection mould with pneumatic ejection

Injection mould with pneumatiac ejection is a typcial structure in injeciton mould, lt uses constringent air to eject mould; the structure of toy-car tyre is a spiecal one and usual using platic department, whose forms by injection and takes offthe mould with pneuamtic ejeciton. The usual strcuture of type mould with pneumatic ejeciton is that using high-pressure air to burst though subulate valve, getting into the cavity,and pushing the pladc department out,then rebounded by spring This paper will intruduce a simple structure of valve ,which is very stable and reliable after practice in daily.