The structure and design method of the staging shot mould is introduced.Thismould can make the output increase more 70%comparing with common mould. It has agood Spreadiiig and applying value.

• 介绍了多层注塑模具的典型结构、工作原理和设计方法，与普通注塑模具相比，多层注塑模具可提高产量70%25以上，具有很好的推广应用价值。