The structure of double parting surface injection mould, which is often used for point gate feed single cavity or more cavity (use) of the injection mould, is complicated. This article takes "cover products" three plate injection mould structure design as an example, made an analysis and design of the double parting surface injection mould, summarizes the key points of the design, and has made a very good reference for other complex mould design.%双分型面注射模,常用于点浇口进料的单型腔或多型腔（多用）的注射模,结构比较复杂。以＂盖产品＂的三板式注射模具结构设计为例,对双分型面注射模的典型结构进行分析与设计,总结了其设计要点,对其他复杂模具的设计具有很好的借鉴作用。
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