中国塑料2026，Vol.40Issue(4)：115-118,4.DOI:10.19491/j.issn.1001-9278.2026.04.018
基于活动型芯侧向脱模长形筐注塑模具设计
Design of injection mold for an elongated basket with laterally ejected movable core
张雪粉 1黄永福 1吕佳旭1
作者信息
- 1. 沈阳理工大学机械工程学院,沈阳 110159
- 折叠
摘要
Abstract
To resolve the demolding challenges associated with circumferential undercut side holes in high aspect-ratio(L/D5)cylindrical plastic parts,this paper reports a novel injection mold design incorporating laterally movable cores.By orienting the part axis perpendicular to the mold opening direction and employing a hydraulically actuated multi-stage ejec-tion system,significant optimizations were achieved,including a reduced mold closing height and lower required injec-tion machine tonnage.The mold utilizes a split cavity(HALF)design with modular core inserts and a sequentially con-trolled,compound demolding mechanism.Material distribution is managed through a five-point balanced hot runner with rib gating.The thermal management system features eight uniformly distributed cooling circuits in the cavity and dual spi-ral cooling channels in the core,complemented by strategically placed vent pins and slots to enhance gas evacuation.This integrated solution combining a lateral demolding layout,hydraulic sequential ejection,and coordinated cooling and venting systems provides a cost-effective approach for manufacturing high aspect-ratio tubular plastic parts,offering sub-stantial engineering value for similar applications.关键词
注塑模具/侧向脱模/长径比塑件/液压顶出/热流道Key words
injection mold/side ejection/high-aspect-ratio plastic part/hydraulic ejection/hot runner分类
化学化工引用本文复制引用
张雪粉,黄永福,吕佳旭..基于活动型芯侧向脱模长形筐注塑模具设计[J].中国塑料,2026,40(4):115-118,4.
