中国塑料2025，Vol.39Issue(6)：110-117,8.DOI:10.19491/j.issn.1001-9278.2025.06.019
基于CAE优化的新能源汽车空调风口下支板热流道模具设计
Hot runner mould design for air-conditioning diversion exportation lower board of new energy vehicle based on CAE optimization
摘要
Abstract
A two-plate hot runner mold was designed for manufacturing the lower support plate plastic component of air conditioning outlets in new energy vehicles.The mold design faced two primary challenges:first,the complex geometry of the part complicated the configuration of the gating system,and second,the presence of numerous irregular structural features hindered automatic demolding.To address these challenges,CAE analysis was employed to optimize the mold's gating system and contour cooling layout.The final design adopted a hybrid cold-hot composite gating system,utilizing a rectangular side gate with initial dimensions of 8 mm×2 mm.For cooling,11 ϕ12 mm pipes were arranged in a con-tour configuration,with an initial inlet water temperature of 25℃.Optimization results confirmed that the injection pres-sure within the mold cavity remains below 28 MPa,warpage deformation of the plastic part is controlled under 2.275 mm,and the injection cycle is maintained below 30 seconds.The dimensional accuracy of the part meets the MT4-MT5 grade standard.To resolve demolding difficulties,the design incorporated four slider mechanisms and six lifter mechanisms for automated part ejection.Notably,an innovative cross-type lifter mechanism was developed,featuring a sliding lifter seat driven by an angle pin.This modification reduced the movement resistance of the angle rod and en-hanced the mechanism's durability.Critical design parameters include a sliding seat angle pin inclination(α)=12 °,a an-gle rod ejection angle(β)=9 °,and a sliding seat groove guide angle(θ)=15 °.These optimizations ensured reliable de-molding performance while meeting stringent cycle time and precision requirements.关键词
汽车空调/下支板/热流道/注塑模具/滑块机构/模流分析/交叉斜顶机构/模具结构Key words
new-energy-vehicle air-conditioning/lower-board/hot runner/injection mould/slider mechanism/moldflow analysis/cross rod lifter mechanism/mould structure分类
化学工程引用本文复制引用
程越,左桂兰..基于CAE优化的新能源汽车空调风口下支板热流道模具设计[J].中国塑料,2025,39(6):110-117,8.基金项目
浙江省教育厅科研项目:基于体征控制力量辅助系统的腿部智能助力机构研究(Y201839504) （Y201839504）
