基于复杂抽芯的金属粉末注射模设计  

Design of Metal Powder Injection Mold Based on Complex Core-Pulling

作　　者：张维合[1] 成永涛[1] 胥永林[1] Zhang Weihe;Cheng Yongtao;Xu Yonglin(GuangDong University of Science&Technology,Dongguan,Guangdong 523083,CHN)

机构地区：[1]广东科技学院,广东东莞523083

出　　处：《模具制造》2021年第5期32-36,共5页Die & Mould Manufacture

摘　　要：根据零件的结构特点和“金属粉末+PA树脂”成型特性,设计了一副金属粉末注射模。重点对成型零件、浇注系统、侧向抽芯机构、定距分型机构、脱模系统、温度控制系统和排气系统进行了分析研究,确定了先进合理的模具结构。通过采用4个点浇口和定模斜顶、定模“T”形扣侧向抽芯结构,解决了坯件重量大,进料困难和脱模困难的难题。结果表明,制品尺寸精度达到了IT5,表面粗糙度值达到Ra0.8μm,全部符合设计要求。In this paper,we designed an injection mold for the“metal powder+polyamide”to the structural characteristics of the parts and the molding characteristics.The various parts,gating system,side core-pulling mechanism,cooling system,guide positioningsystein,opening mechanism,ejection system,and exhaust system of the mold was studied.The difficulty of feeding and demoulding has been solved by using the four point gates,inclined top and T-shaped button side core-pulling structure in the cavity-side.The dimensional tolerance of the part reached IT5,and the surface roughness reached Ra0.8μm,which proves that the mold structure is advanced and reasonable.

关 键 词：注射模 金属粉末+PA树脂 定模斜顶抽芯 定模“T”形扣抽芯 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]