轿车用皮纹后饰条注塑参数优化及试验验证  

Optimization and experimental verification of injection-molding parameters of leather back trim for vehicle

作　　者：黄可[1] 邹华杰[1] 钱子龙[1] 李兵兵 HUANG Ke;ZOU Huajie;QIAN Zilong;LI Bingbing(ChangZhou Vocational Institute of Mechatronic Technology,Changzhou 213164,China)

机构地区：[1]常州机电职业技术学院,江苏常州213164

出　　处：《中国塑料》2025年第3期77-80,共4页China Plastics

基　　金：常州机电职业技术学院校级重点课题(2024-KJZD-01);2024年江苏省高校青蓝工程资助。

摘　　要：以某型号轿车皮纹后饰条为研究对象,选取了制品上特征点A为翘曲观测点,在扣接特征处沿料流前进方向增设了“溢料回路”。选取模具表面温度、注塑温度、注射压力、保压压力,为研究对象,构建4因素4水平L16正交试验。对16组数据进行了极差分析,获得了响应最灵敏的因素及水平,得到了最优工艺参数组合,在最优参数组合下,A点处所有效应下翘曲量为5 mm,较第10组参数下的翘曲量,降低了30%。对最优参数进行了试验验证,主要注塑参数为模具表面温度128℃、注塑温度330℃、注射压力48 MPa、保压压力为注射压力的95%。成型后制品外观面光泽均匀,没有出现银纹、拉丝、发白等注塑缺陷,特征点A,与制品整体平滑过渡,满足了试验预期,制品成型后满足使用要求,验证了Moldflow 2023模流分析软件的准确性及极差分析的科学性。Taking the rear trim strip of a certain type of car skin as the research object,feature point A on the strip was selected as the warpage observation point,and an “overflow loop” was added along the direction of the material flow at the buckle feature.Mold surface temperature,injection temperature,injection pressure,and pressure holding pressure were selected as the research objects to construct a four-factor four-level L16 orthogonal experiment.The range analysis was carried out upon 16groups of data to obtain the most sensitive factors and levels as well as the optimal combination of process parameters.With the optimal combination of parameters,the warpage quantity at the point A reached 5 mm under all effects,which was 30 %lower than that under the tenth group of parameters.The optimal parameters were verified by experiments.The main injection parameters were determined to be a mold surface temperature of 128 ℃,an injection temperature of 330 ℃,an injection pressure of 48 MPa,and a holding pressure of 95 % of the injection pressure.After molding,the appearance of the product was uniform.There was no silver grain,wire drawing,and white injection defects.The feature point A looks smooth over the all transition of the product,meeting the test expectations.After molding,the product can meet the requirement of application.The results verified the accuracy of the Moldflow-2023 analysis software and the scientificalness of range analysis.

关 键 词：模具表面温度 注塑温度 注射压力 保压压力 正交试验 极差分析 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]