摘要
针对汽车仪表罩外形不规则,型芯侧需多向脱模的特点,设计了一模一出的模具结构,针对塑料件不同部位设计了不同的脱模机构,结合塑料件在模具上布局的需要,型腔侧采用滑块抽芯脱模机构,型芯侧则分别设计了倾斜式拉料杆顶出流道废料、倒装弯销后模先抽芯,顶块+顶针二次顶出,油缸倾斜式顶针板顶出等脱模机构,模架采用标准模架改装后将顶针板倾斜16o顶出,顶出动力依靠液压油缸来完成;对应脱模机构的设计需要,模具设计时,对塑料件在模具中的布局、分型面分区设计、多向先抽芯脱模机构设计、潜伏式进浇方式设计、二次顶出机构及其控制机构设计等做了合理优化布局安排,实现了塑料件的完整脱模及自动化生产。
Aimed at the irregular shape of automobile instrument cover plastic parts and the multiple to multiple release characteristics of side core, the mold structure of one part in each die was designed. And different ejection mechanisms were designed for different parts of the product. According to the need of product layout in the mold cavity, the mould cavity used slide core-pulling mechanism; for the mold core, the various mechanisms of inclined pulling rod to eject runner scrap and flipping angular cam to loose core firstly, the two stage ejection of top block and thimble and the ejection of inclined guide pin of oil cylinder were designed respectively. After the modification of mold base based on standard mould base, the ejector plate was tilted to 16°and ejected with the force from hydraulic ram. Corresponding to design specification, the reasonable optimal arrangements were conducted on the plastic parts in the mold layout, type partition design, multi core ejection mechanism design, subsidence pouring design , stwo-step ejection mechanism andits control mechanism, thus the full release of plastic parts was realized.
出处
《塑料工业》
CAS
CSCD
北大核心
2016年第9期70-75,共6页
China Plastics Industry
基金
湖南省教育科学课题(XJK014QXX003)
关键词
汽车模具
弯销滑块抽芯
油缸顶出
模具结构
二次分型
Automobile Mould
Bending Pin Sliding Block Core-pulling
Cylinder Ejection
MoldStructure
Two-step Parting
