摘要
针对防疫消毒瓶盖双色塑件的成型,设计了一副双色注塑模,该双色注塑模由两副不同结构的子模具组成,其中一副子模具采用点浇口三板模结构,另外一副子模具采用潜浇口假三板模结构。两副子模具定模的高度相同,而结构不同。在两副子模具的定模侧各自设置了3个定模弯销抽芯滑块机构来实现塑件外壁的成型和脱模;在三板模子模具中,利用流道板与定模板的打开,驱动定模侧的3个定模滑块进行侧抽芯。在假三板模子模具中,利用加厚固定板与定模板之间的打开,驱动定模侧的3个定模滑块进行侧抽芯。点浇口和潜浇口的使用,保证了两次成型的流道废料都自动切除和脱模。在第一色子塑件上预留第二色子塑件模腔的注塑流动通道,简化了第二色模腔的浇注系统,降低了模具设计难度。
Aimed at the molding of bi-color plastic parts for the epidemic prevention and disinfection bottle cap,a pair of twocolor injection mold was designed,which was composed of two sub-molds with different structures,one of the sub-mold adopted the structure of three-plate mold with point-gate,and the other sub-mold adopted the structure of pseudo three-plate mold with submarine-gate.In the structure design of the two sub-molds,the height of the fixed-mold was the same,but the structure was different.In the two sub-molds,three fixed-mold bending pin core pulling slider mechanisms were respectively set to realize the molding and demoulding of the outer wall of the plastic part.In the three-plate mold,the opening of the runner-plate and the fixed-plate was used to drive the three fixed-mold sliders on the side of the fixed-mold for side core pulling.In the pseudo three-plate mold,the opening between the thickened fixed-plate and the fixed-plate was used to drive three fixed-mold sliders on the fixed-mold side for side core pulling.The use of point-gate and submarine-gate ensures the automatic cutting and demoulding of the waste material in the two forming processes.The injection flow channel of the mold cavity of second-color plastic part is reserved on the first color plastic part,which simplifies the gating system of the second color mold cavity and reduces the difficulty of mold design.
作者
杨剑萍
肖国华
刘路兴
刘志鹏
Yang Jianping;Xiao Guohua;Liu Luxing;Liu Zhipeng(School of Mechanical and Electrical Engineering,Zhejiang Business Technology Institute,Ningbo 315012,China;Plastics Research and Development Center of Shandong Province,Jinan 250002,China;32379 Unit of the Chinese People's Liberation Army,Beijing 100072,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第2期97-102,共6页
Engineering Plastics Application
基金
浙江省高等教育“十三五”第二批教学改革研究项目(jg20190778)
2020年度高等学校国内访问工程师“校企合作项目”(FG2020107)
2019年度高等学校国内访问工程师“校企合作项目”(FG2019078)
宁波市公益类科技计划项目(202002N3128)。
关键词
双色成型
模具设计
注塑
结构设计
点浇口
潜浇口
bi-color molding
mold design
injection
structure design
point-gate
submarine-gate
