摘要
针对某车型高光双色装饰件翼子板三角饰盖,分析了两种软胶、硬胶产品的搭接截面及其对应的模具方案;两种方案经对比后,选取了其中一种模具结构简单可靠的软胶、硬胶产品搭接截面,设计了一套双色注塑模具。该双色注塑模采用正装模一体式设计,匹配直角式双色注塑机,采用1模4腔的产品布局,软硬胶产品分别采用独立的热流道进胶系统,其中第一射注塑成型双色塑件的硬胶产品,第二射注塑成型软胶产品。为实现该双色塑件的结构成型,在双色模的定模侧分别设计了两套不同的弹块机构,来满足双色塑件软硬胶的产品搭接要求。为实现双色模具温度调节要求,双色模型腔采用随形水路设计,型芯采用“随形水路+水井”设计,并且匹配模温机进行模温调节。在双色模顶出取件过程中,第一射硬胶产品在动模侧斜顶机构的作用下留在动模内,且在液压油缸的控制下不执行顶出动作;第二射软胶模具注塑完成后,在液压油缸的作用下,动模顶出系统和斜顶机构执行顶出动作,将双色塑件顶出后,最后进行机械手取件。实践证明,该双色模具结构稳定可靠,塑件质量满足设计要求。
Aiming at the triangular cover of the fender plate of a high-light two-color decorative part of a car type,the lap section of two kinds of soft rubber and hard rubber products and the corresponding mold scheme are analyzed.After comparing the two schemes,a set of two-color injection moulds was designed by selecting one of the lapping sections of soft and hard rubber prod‐ucts with simple and reliable mold structure.The two-color injection mold adopts a formal mold integrated design,matching right-angle two-color injection molding machine,and adopts the product layout of 1 mold and 4 cavities.The soft and hard rubber prod‐ucts are respectively controlled by independent hot runner injection system,among which the first injection molding two-color plastic parts are hard rubber products and the second injection molding soft rubber products.In order to realize the structure forming of the two-color plastic parts,two sets of different elastic block mechanisms are designed respectively on the fixed die side of the two-color plastic parts to meet the requirements of the product overlap of the soft and hard adhesive.In order to meet the tempera‐ture adjustment requirements of the two-color mold,the two-color mold cavity adopts the shape water channel design,the core adopts the"shape water+well"design,and the mold temperature is adjusted by matching the mold temperature machine.In the process of two-color mold ejection,the first ejector rubber product remains in the moving mold under the action of the inclined top mechanism on the moving mold side,and the ejector system and the inclined top mechanism do not perform the ejector action under the control of the hydraulic cylinder.After the second soft injection mold is finished,under the action of the hydraulic cylinder,the dynamic die ejecting system and the inclined top mechanism execute the ejecting action,and the two-color plastic parts are ejecting,and finally the parts are taken by the manipulator.The practice shows that the structure of the two-color mold is stable and reliable,and the quality of the plastic parts meets the design requirements.
作者
石波
铁盛武
沈亮涵
莫兴漫
Shi Bo;Tie Shengwu;Shen Lianghan;Mo Xingman(Technical center of SAIC GM Wuling Automobile Co.,Ltd.,Liuzhou 545007,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2023年第7期110-115,共6页
Engineering Plastics Application
关键词
高光双色装饰件
翼子板三角饰盖
双色搭接截面
双色注塑
弹块机构
highlight two color decorative pieces
fender triangulation cover
two color lap section
double-shot molding
spring block
