Taking relay bobbin as an example, introduced a kind of concealed ejector method, provided a new molding design thought for the parts which was required to be without ejector mark and burr.

• 以继电器线圈架为例,介绍了一种隐形顶出方式,对于零件表面不允许有顶出印痕和飞边要求的零件的模具设计提供一种设计思路,希望对类似零件的模具设计有借鉴作用。