摘要
针对汽车中央扶手主壳形状复杂、模具结构设计困难的问题,设计了两板式热流道注塑模具;浇注系统采用冷热流道相结合的方式进行注塑;针对难脱模问题,设计了3个外侧整面滑块抽芯机构和12个内壁特征抽芯机构;内壁抽芯机构包括10个斜顶机构,1个特殊的斜滑块抽芯机构,1个T型槽驱动内收抽芯机构。斜滑块抽芯机构通过外壁滑块对内壁滑块进行锁定,以达到外壁整面及内壁倒扣特征依次脱模的目的;T型槽驱动内收抽芯机构通过斜导柱驱动滑块从而带动二次滑块驱动型针进行内抽芯,以实现倒扣孔脱模的目的;斜滑块抽芯机构和T型槽驱动内收抽芯机构的设计具有较好的机构结构创新性;模具整体结构布局合理,机构简单实用。
Aimed at the problems of complicated shape of main shell of car central handrail and difficult design of mold structure, the two plate hot runner structure mold was designed. The gating system adopts the combining of cold and hot runner for injection molding. Aimed at the difficult demoulding problem,3 outer entire surface slider core-pulling mechanisms and 12 inner wall characteristics core-pulling mechanisms were designed. The inner wall core-pulling mechanism include 10 inclined top mechanisms, 1 special inclined slider core-pulling mechanism,and 1 T-groove driving inner core-pulling mechanism. The inclined slider corepulling mechanism locks the inner wall sliding block through the outer wall sliding block,so as to achieve the purpose of stripping inverted features of outer entire surface and inner walls undercut characteristics successively. The T-groove driving internal corepulling mechanism drives the sliding block through the slanting guide column to drive the secondary sliding block driving needle for internal core-pulling,so as to achieve the purpose of demoulding the hole undercut. The design of inclined sliding block pulling mechanism and T-groove driving adduction core pulling mechanism have a good innovation of structure. The overall structure layout of the mold is reasonable,the mechanism is simple and practical.
作者
赵战锋
Zhao Zhanfeng(Department of Mechanical Engineering, Wenzhou Vocational & Technical College, Wenzhou 325035, China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2019年第1期82-87,共6页
Engineering Plastics Application
基金
浙江省教育科学规划2017年度研究课题(2017SCG191)
关键词
汽车中央扶手主壳
注塑模具
机构设计
结构设计
热流道
main shell of car central handrail
injection mold
mechanism design
structure design
hot runner
