深孔塑料件注射模具排气系统的技术改进  

Improvement of the Exhaust System in Injection Mould of Plastic Products with Deep Hole

作　　者：黄川斌 赵锦成[1] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621999

出　　处：《新技术新工艺》2015年第4期73-74,共2页New Technology & New Process

摘　　要：深孔塑料件在注射成型过程中,由于注射模具的排气系统存在一定缺陷,导致零件上产生气泡、局部缺料、组织疏松、熔接不良、局部碳化和烧焦等质量问题。本文分析了注射过程中模具内气体的来源及其对注射成型过程的影响,以及排气不良对产品质量的影响,通过改善模具排气作为解决质量问题的主要途径,根据产品形状及模具的结构和排气布局,提出了改进模具排气系统的方案。使用改进后的模具,成功批量生产出了满足要求的产品,达到了预期效果。Owing to the exhaust system＇s imperfection,air bubble,seam,uncomely shape,short of plastic,structure loosing,weld lines,carbonization,burning surface and other disfigurements that often occurred in injection molding products with deep hole,The paper analyzed the source and impact of air in molding process.The exhausting system in injection mould was improved for solving these problems.Better quality injection molding products with deep hole were produced by using the improved mould,which met the prospective.

关 键 词：注射件缺陷 排气系统 模具改进 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]