中国塑料2025，Vol.39Issue(6)：105-109,5.DOI:10.19491/j.issn.1001-9278.2025.06.018
新能源汽车车门内板二次顶出注塑模设计
Design of two-step demolding injection mould for door inner panel of new energy vehicles
摘要
Abstract
This work presents the development of a large-scale injection mold incorporating sequential valve-gated hot run-ner(SVGHR)technology.There are two key challenges addressed,which included high clamping force and demolding complexity.A two-stage ejection system resolved excessive clamping force on the horn mesh structure and facilitated reli-able part release.Integrated support columns within the part geometry eliminated the deformation caused by inclined ejec-tor pin forces during demolding.SVGHR control ensured uniform filling of the large mold cavity,mitigating flow-related defects.A multi-channel cooling system with 24 interconnected circuits,including through-type,angled,and baffle-cooled wells,achieved rapid,balanced cooling through optimized vertical/horizontal routing.Production trials confirmed the dimensional accuracy of molded parts meeting MT3 standards according to the national standard GB/T14486-2008.Cycle time was reduced by 10%compared to conventional molds.关键词
新能源汽车/车门内板/超大型注塑模具/二次顶出/顺序阀热流道/定位柱/侧向抽芯机构Key words
new energy vehicles/door inner panel/supersized injection mould/two-stap demolding/sequential valve gate technology/the core pulling mechanism/positioning column分类
化学化工引用本文复制引用
李清安,张维合..新能源汽车车门内板二次顶出注塑模设计[J].中国塑料,2025,39(6):105-109,5.基金项目
2022年东莞市工程技术研究中心项目(20221600402242) （20221600402242）
2023年度广东科技学院校级项目(GKY-2023KYZDK-12) （GKY-2023KYZDK-12）
