基于顶针与推板的二次顶出注塑模具设计  

Design of Secondary Ejection Injection Mold Based on Ejector Pin and Push Plate

作　　者：王静[1] 刘雪敏 Wang Jing;Liu Xuemin(College of Intelligent Manufacturing,Zhejiang Institute of Mechanical and ElectricalEngineering,Hangzhou,Zhejiang,310053;College of Architectural Engineering,Zhejiang Changzheng Vocational and Technical College,Hangzhou,Zhejiang,310023)

机构地区：[1]浙江机电职业技术学院智能制造学院,浙江杭州310053 [2]浙江长征职业技术学院建筑工程学院,浙江杭州310023

出　　处：《现代塑料加工应用》2022年第6期44-47,共4页Modern Plastics Processing and Applications

摘　　要：针对某汽车塑料支架结构复杂、脱模阻力大、难以顶出的问题,设计了一种顶针与推板复合顶出的二次顶出脱模机构。在模具的后模底板及面针板上分别设计了拉钩及移动块,通过拉钩的斜面触碰移动块的斜面,并利用弹簧控制顶针与推板顶出动作的先后顺序,实现了塑件的二次顶出,不但有效保证了塑件的质量,也达到了塑件自动化生产的目的。模具整体布局及结构设计合理,机构简单可靠,能有效降低模具生产成本,可为同类塑件的模具结构设计提供一定的参考。Aiming at the problems of complex structure, large demoulding resistance and difficult ejection of an automobile plastic part support, a double ejection demoulding mechanism with ejector pin and push plate combined ejection was designed. The pull hook and the moving block were designed on the rear mold bottom plate and the face pin plate of the mold respectively. The inclined surface of the pull hook touched the inclined surface of the moving block, and the spring was used to control the sequence of the ejector pin and the push plate, so as to realize the secondary ejection of the plastic parts, which not only effectively ensured the quality of the plastic parts, but also achieved the goal of automatic production of the plastic parts. The overall layout and structure design of the mold were reasonable, the mechanism was simple and reliable, and the production cost of the mold could be effectively reduced. It could provide a reference for the mold structure design of similar plastic parts.

关 键 词：注塑模具 模具设计 顶针顶出 推板顶出 二次顶出 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业] U468.2[机械工程—车辆工程]