注塑整圆内倒扣塑件的简易抽芯法

A Simple Core-pulling Method for Plastic Parts with Internal Full Circle Undercut

针对具有整圆内倒扣特征的特殊塑件,设计了一种简易的分步抽芯机构。采用组合式凸模分步抽芯的方法,实现分步抽出具有整圆内倒扣特征凸模的目的。运用UG NX、AutoCAD等计算机辅助设计软件,设计出了运用该结构的注塑模具。分析表明,该结构运动过程简单,能够稳定可靠的完成整圆内倒扣塑件的脱模。

A simple step-by-step core pulling mechanism was designed for special plastic parts with internal full circle undercut.This method was adopted to achieve the purpose of pulling out the punch with internal full circle undercut feature step-by-step.By using UG,AutoCAD and other computer-aided design software,the injection mold with this structure was designed.It is proved that the structure has a simple motor processes and is a reliable solution to the demould of plastic parts with the features of internal full circle undercut.