汽车车门内饰板的成型模拟与正交法优化  

Forming Simulation and Orthogonal Optimization of Trim Panel of Automobile Door

作　　者：谭安平[1] 幸晋渝[1] 刘克威[1] TAN Anping;XING Jinyu;LIU Kewei(Engineering&Technical College,Chengdu University of Technology,Leshan,Sichuan 614000,China)

机构地区：[1]成都理工大学,工程技术学院,四川乐山614000

出　　处：《塑料》2021年第3期132-136,共5页Plastics

基　　金：2019年乐山市重点科技研究项目(19CZD053)。

摘　　要：以汽车车门内饰板为例,采用模流分析软件Moldflow对浇注系统的最佳浇口位置进行预测,结合产品具体的特点,得到3个最佳进浇点,建立浇注系统模型。由测试结果可知,在该浇注系统下,模腔压力较均匀,注射压力较小,产品各个填充末端的填充时间一致,浇注系统为平衡式进浇系统;对冷却系统进行建模,检查凸凹模的模温的一致性,并对熔接线及气穴位置进行预测。为降低翘曲变形量,采用正交试验法确定熔体温度、模具温度、保压压力等参数,最终,得到最佳的工艺参数组合为熔体温度230℃、模具温度20℃、保压压力75 MPa、保压时间为20 s。在该条件下,制备的注塑料制品的翘曲变形量为4.976 mm,与优化前相比,变形量降低24%,能满足成型质量要求。Taking the car door interior trim panel as an example,the mold flow analysis software Moldflow was used to predict the optimal gate position of the pouring system. Combined with the specific characteristics of the product,three optimal pouring points were found and the pouring system model was established. Through verification,it was known that the cavity pressure under this pouring system was very uniform,the injection pressure was small,the filling time of each filling end of the product was consistent,and the pouring system was a balanced pouring system;the cooling system was modeled to check the consistency of the mold temperature of the convex and concave dies,and the melting line and the cavitation position were predicted. In order to reduce the warping deformation,the melt temperature,mold temperature,holding pressure and other parameters were determined by orthogonal test. Finally,the best combination of process parameters was obtained: melt temperature 230 ℃,mold temperature 20 ℃,holding pressure 75 MPa,holding time 20 s.Under these conditions,the warpage deformation of the injection plastic products was 4. 976 mm,which was 24% lower than that before optimization,meeting the requirements of molding quality.

关 键 词：车门内饰板 翘曲变形 正交试验 优化 预测 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业] TP391.7[自动化与计算机技术—计算机应用技术]