汽车离心器三层组合滑块抽芯机构模具设计  

Design of Mould with Three-Layer Combined Slider Core Pulling Mechanism for Automobile Centrifuge

作　　者：周全[1] 熊建武[1] ZHOU Quan;XIONG Jianwu(Hunan Industry Polytechnic,Changsha,Hunan 410208,China)

机构地区：[1]湖南工业职业技术学院,湖南长沙410208

出　　处：《塑料》2021年第3期78-82,共5页Plastics

摘　　要：为汽车离心器泵叶塑件的注塑成型,设计了一副四板式点浇口模具。模腔使用3点点浇口对该双层圆盘状塑件进行平衡注塑。模架设计为分4次分型打开,第一次用于浇口与塑件的自动分离,第二次用于流道废料的自动脱模,第三次用于脱模机构动作的执行,第四次用于塑件的完全顶出脱模。针对塑件导向筋特征前端部位脱模困难的问题,设计了一种三层组合滑块3次抽芯机构来进行脱模。机构设计方案为:将三层滑块组合在一起后,脱模时,先由弹簧驱动上层滑块进行第一次脱模抽芯,再由斜导柱驱动中间层斜滑块第二次脱模抽芯,最后,由弯销驱动底层滑块带动中间层、上层滑块一起进行第三次移位动作,从而保证塑件从模具成型件上的完全自动脱模。A set of 4-plate point gate mould was designed for injection molding of automobile centrifugal pump blade.In the mould,a 3-point gate was used to balance the injection molding of the double-layer disc-shaped plastic part.The mold base was designed to be opened in 4 times,the first for automatic demoulding of gate and plastic parts,the second for automatic demoulding of runner waste,the third for the execution of demoulding mechanism action,and the fourth for complete ejection and demoulding of plastic parts.In view of the difficulty in demoulding the front part of the guide rib characteristics of plastic parts,a three-layer combined slider three-step core pulling mechanism was designed to demould.The mechanism design scheme was as follows:after the three-layer sliding blocks were combined together,the spring driven the upper slider for the first demoulding and core pulling,and then the inclined guide pillar driven the inclined slider of the middle layer for the second demoulding and core pulling,and finally the bent pin was used the bottom slide block was driven to move the middle layer and upper layer slider together to realize the third core pulling and demoulding,so as to ensure the automatic demoulding of plastic parts from the molding parts.

关 键 词：汽车塑件 机构设计 滑块机构 三次抽芯 模具设计 注塑 

分 类 号：TQ330.41[化学工程—橡胶工业]