IPad支架联动抽芯脱模机构及注塑模具设计

Design of Demolding Mechanism and Injection Molds for iPad Brackets

针对转柄/支架产品注塑时脱模困难的问题,设计了3种类型的脱模机构,侧边简单结构特征采用斜导柱滑块抽芯机构脱模、细长深孔特征采用小油缸驱动滑块抽芯机构脱模、中央复杂部位则采用组合式抽芯机构脱模;组合式抽芯机构设计中,将前模弯销驱动滑块机构与后模三联动油缸驱动三滑块同步抽芯机构相结合,先由前模脱模机构实现产品拐角处的抽芯并让出后模机构运动空间后,再由后模三联动机构实现往内部收缩型3个滑块的同步联动抽芯,设计的机构结构合理简单实用。

To overcome a demolding difficulty during the injection molding process for a stembracket part for iPads,three types of demolding mechanisms were designed.In these mechanisms,a bevel slider core pulling mechanism was adopted for a side simple structural feature,a small cylinder slide block core pulling mechanism was adopted for a deep hole feature,and a combined core pulling and demolding mechanism was adopted for the complicated central position.In the case of design of the combined mechanism,a die-bending pin-driving slider mechanism was combined with the three synchronous linkage slider core pulling mechanisms driven by a rear mould threelinkage cylinder.This demolding mechanism could conduct the core pulling at the corner and let out the mold motion space,and then the three-linkage mechanism could realize a synchronous linkage to internal contraction type three-slide block core pulling mechanism.The results indicated that the mechanism had a simple and practical structure.