卡车前顶柜门外板注射成型工艺多目标优化  

Multi-objective optimization of injection molding process for truck front roof cabinet door outer panel

作　　者：王明伟[1] 张晗 吴迪 李小虎 林连明 叶星辉 WANG Mingwei;ZHANG Han;WU Di;LI Xiaohu;LIN Lianming;YE Xinghui(School of Mechanical Engineering and Automation,Dalian Polytechnic University,Dalian 116034,China;Zhejiang KaihuaMould Co.,Ltd.,Taizhou 318020,China)

机构地区：[1]大连工业大学机械工程与自动化学院,辽宁大连116034 [2]浙江凯华模具有限公司,浙江台州318020

出　　处：《工程塑料应用》2024年第10期75-83,共9页Engineering Plastics Application

基　　金：2023年度辽宁省教育厅基本科研项目(JYTMS20230403)。

摘　　要：以卡车前顶柜门外板为研究对象,基于Moldex3D模流分析软件对其注射成型过程进行模拟分析。根据初始模拟分析结果可知,体积收缩率(α_(1))和Z方向(产品脱模方向)翘曲位移(α_(2))数值过大,故选取模具温度(A)、熔体温度(B)、注射时间(C)、保压时间(D)和保压压力(E)为试验因素,以α_(1)和α_(2)为指标进行16组正交试验,通过极差分析分别得到α_(1)和α_(2)的最优工艺组合。经对比两工艺组合参数不同,故使用熵权TOPSIS法对工艺参数进行综合评价分析。通过对综合评价指数进行极差分析,得到各因素对α_(1)和α_(2)影响程度的顺序为E>A>D>C>B;最优工艺参数组合为A1B1C2D1E4。在Moldex3D中对最优工艺参数组合进行模拟,得到分析结果:α_(1)为8.237%,α_(2)为1.198 mm。与初始工艺参数相比,优化后的α_(1)减少了5.105%,α_(2)减少了1.082 mm,分别比优化前降低了38.26%和47.46%。同时对注塑模具进行设计和制造,并将最优工艺参数组合进行现场实际试模,产品合格率为83.33%,满足生产要求。因此,证明使用Moldex3D模流分析软件和熵权TOPSIS法可有效解决在注射成型中的多目标优化问题。Taking the truck front roof cabinet door outer panel as the research object,the injection molding process was simulated and analyzed based on Moldex3D mold flow analysis software.According to the results of the initial simulation analysis,the values of volumetric shrinkage and Z-direction(product demolding direction)warpage displacement were too large,so the mould temperature(A),melt temperature(B),injection time(C),holding time(D)and holding pressure(E)were selected as the test factors,and 16 groups of orthogonal tests were carried out with volumetric shrinkage(α_(1))and Z-direction warpage displacement(α_(2))as the indexes and the optimal process combinations of volumetric shrinkage and Z-direction warpage displacement were obtained by polar analysis,respectively.The optimal process combinations of volumetric shrinkage and Z-direction warpage displacement were obtained by polar analysis,respectively.After comparing the parameters of the two process combinations,the entropy weight TOPSIS method was used to comprehensively evaluate and analyzed the process parameters.Through the polar analysis of the comprehensive evaluation index,the influence of each factor on the volumetric shrinkage and Z-direction warpage displacement is in the order of E>A>D>C>B,and the optimal combination of process parameters is A1B1C2D1E4.The optimal combination of process parameters was simulated in Moldex3D,and the analytical results were as follows:the volumetric shrinkage rate is 8.237%,and Zdirection warpage displacement is 1.198 mm.Compared with the initial process parameters,the optimized volumetric shrinkage is reduced by 5.105%and the Z-direction warpage displacement is reduced by 1.082 mm,which are 38.26%and 47.46%lower than before optimization,respectively.At the same time,the injection mold is designed and manufactured,and the combination of the optimal process parameters is used for the actual trial mold on site,and the product qualification rate is 83.33%,which meets the production requirements.Therefore,it is proved that

关 键 词：模流分析 卡车前顶柜门外板 正交试验 综合评价 极差分析 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]