塑料科技2026，Vol.54Issue(2)：175-178,4.DOI:10.15925/j.cnki.issn1005-3360.2026.02.031
薄壁深腔侧抽芯盆形塑件热流道注塑模具设计
Design of Hot Runner Injection Mold for Thin-walled Deep-cavity Side Pull Core Bowl-shaped Plastic Part
摘要
Abstract
Based on the injection-molding characteristics of thin-walled deep-cavity parts,a hot runner gating system for high-pressure and high-speed filling was adopted.The high injection pressure exerts a strong impact force on the cavity plates,which are prone to deflection.Therefore,support pillars were installed between the bottom plate and the moving-mold plate to increase mold rigidity.To solve the difficult venting problem,a stepped venting system is proposed.Replaceable venting inserts are added to conventional vent slots to prevent short shots and burn marks.Because the core-cavity contact surfaces are inclined,balance-block supports and parting-line locks are placed between the moving and fixed plates to counteract the unbalanced forces caused by injection pressure and to improve plate-positioning accuracy.The mold uses the machine ejector rods to act directly on the stripper plate for ejection and return,reducing mold thickness and production cost.According to the structures of the moving mold,fixed mold and slides,a zoned temperature-control cooling network was laid out.Cooling channels were placed at the gate,in the fixed half,moving half,cores and slides,using a combination of straight-through and baffle cooling to achieve full cooling,shorten cycle time and obtain good surface quality.Production practice shows that the design is practical and valuable.关键词
薄壁深腔塑件/盆形塑件/热流道/注塑模具Key words
Thin-walled deep-cavity plastic part/Bowl-shaped plastic part/Hot runner/Injection mold分类
化学化工引用本文复制引用
张雪粉,赵做义,黄永福..薄壁深腔侧抽芯盆形塑件热流道注塑模具设计[J].塑料科技,2026,54(2):175-178,4.基金项目
辽宁省属本科高校基本科研业务费专项资金资助(LJ232410144074) （LJ232410144074）
