狭小型腔的延伸式热喷嘴结构设计与注塑优化  

Structure Design and Optimized Injection Molding of Extending Nozzle Used for Hot Runner Molds with Narrow Cavity

作　　者：陈剑玲[1] Chen Jianling(Mechanical Engineering Department,Guangxi Technological College ofMachinery and Electricity,Nanning,Guangxi,530007)

机构地区：[1]广西机电职业技术学院机械工程系

出　　处：《现代塑料加工应用》2019年第3期56-59,共4页Modern Plastics Processing and Applications

基　　金：2018年广西高校中青年教师基础能力提升项目(项目编号2018KY1004)

摘　　要：通过对聚丙烯(PP)医药瓶盖件注塑工艺分析,针对在狭小模具型腔应用热喷嘴高压注塑的要求,阐述了延伸式热喷嘴结构设计及优化过程,研究了4种热嘴尖结构方案并进行注塑工艺参数的调试。实际生产表明,优化的热喷嘴采用近距封胶的延伸式直通弧形热嘴尖,解决了安放热喷嘴空间受限和注塑成型问题,成型顺畅,效率提高,产品质量更优。Based on analysis of molding the polypropylene(PP) medical bottle cap, to achieve aims that nozzle can be used for narrow cavity with high-pressure injection, the structure optimization design of an extending nozzle is described in this article. Four different tip-plans are designed and put to a contrast injection molding test. As the production test proves, the optimized extending nozzle with flow-through art-tip and close sealing-melt positon can solve the difficulty of placing the nozzle without enough space and the problem of injection molding. In addition, the products can be produced smoothly and efficiently with better quality.

关 键 词：注塑成型 热流道技术 延伸式热嘴 直通弧形嘴尖 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]