带嵌件的电容器壳体成型工艺分析与模具设计  

Moulding process analysis and mould design for the shell of capacitor with inserts

作　　者：赵军[1] 吴小灵[1] 

机构地区：[1]厦门理工学院材料科学与工程系,福建厦门361024

出　　处：《模具工业》2013年第2期36-39,共4页Die & Mould Industry

基　　金：厦门市科技计划项目(3502Z20113039)

摘　　要：运用有限元分析方法分析了电容器壳体塑件成型熔体充填过程、冷却过程中塑料的收缩规律,结果表明:塑件厚壁对收缩率有较大影响,其中最大壁厚处的收缩率达14.86%。根据塑件的成型特点,设计了三板式模具结构;为减小收缩率对塑件质量的影响,根据注射压缩成型原理,采用液压缸驱动的双弹簧压缩成型机构实现压缩模塑过程,同时为提高生产效率,设计了嵌件快装机构,减少了嵌件的安装时间。The law of shrinkage during filling and cooling procedures of melt plastics was analyzed for the moulding process of capacitor shell by applying finite element method. The results showed that the influence of wall thickness of plastic parts on the shrinkage ra- tio was significant and the shrinkage ratio of the maximum wall thickness is up to 14.86%. A mould structure with three plates was designed based on the characteristic of plastic parts moulding. According to the principle of injection and compression moulding, a dou- ble-spring compression moulding mechanism driven by hydraulic cylinder was applied to realize the compression moulding process in order to reduce the influence of shrinkage ra- tio on the quality of plastic parts, and a rapid assembling mechanism for inserts was de- signed to improve the production efficiency and decrease the assembling time.

关 键 词：电容器壳体 收缩率 注射压缩成型 模具设计 快装装置 

分 类 号：TG76[金属学及工艺—刀具与模具] TQ320.662[化学工程—合成树脂塑料工业]