侧浇口进胶的三板模模具设计

摘要

针对三板模仅适用于点浇口,两板模侧浇口浇注系统凝料需要后期人工去除的现状,以汽车雨刷用不完全齿轮为例,将浇口设计为长度为2mm,倾斜角度为30°的短小侧浇口,成功实现了三板模的侧浇口进胶;通过大小拉杆组合限位机构设计,实现了正确的开模顺序和距离.结果表明,该模具设计扩大了三板模的使用范围,实现了浇注系统凝料与产品的模内自动分离,提高了生产效率,节约了人力成本.%In general,the three-plate mold was only suitable for a point gate,and the artificial removal should be conducted for the freezing resin in the gating system of the two-plate mold with an edge gate.This paper reported a design of a three-plate mold with an edge gate for the partial gear on intermittent wipers.In this mold,the gate was designed as a short edge gate with a length of 2 mm and a tilt angle of 30 °.The mold opening was successfully performed in a correct order and distance through a design of the complex limiting mechanism with big and small pull rods.This mold design extends the applicable range of the three-plate mold and realizes the automatic separation of injection-mold parts with the freezing resin in the gating system,thus improving the production efficiency and saving the labor cost.