汽车侧裙板数值成型分析及模具设计  

Numerical Forming Analysis and Die Design of Automobile Side Skirt

作　　者：谭安平[1] 李玲 段扬 骆静[1] TAN Anping;LI Ling;DUAN Yang;LUO Jing(The Engineering&Technical College of 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》2024年第2期168-173,177,共7页Plastics

摘　　要：汽车侧裙板长度约为1 m,宽度约为0.1 m,卡扣、加强筋、嵌件孔等复杂结构较多,属于大型细长复杂塑件。大型细长复杂塑件成型难度较大,需要采用数值仿真与模具设计相结合的方法,仿真、设计和验证交叉进行、相互渗透。根据产品的特点拟定了3种进浇方案,仿真结果表明,方案Ⅲ(9点进浇)翘曲变形量最小,其值为4.51 mm。通过验证方案Ⅲ的缩水性、填充时间、填充等值线、填充末端时间差及压力差等参数可知,方案Ⅲ填充均匀、末端压力一致、产品无缩水,表面无质量缺陷,为可行方案。根据方案Ⅲ进行模具设计,包括浇注系统、成型零部件、推出机构、冷却系统等。模具设计完毕后对冷却系统进行验证,结果表明,凸凹模的模温温差小于10℃,模温趋于一致,无翘曲变形风险。基于方案Ⅲ的模具设计可作为最终方案,为模具制造和生产提供方向。The side skirts of automobiles were about 1 m long and 0.1 m wide,with many complex structures such as buckles,reinforcing ribs,and insert holes,making them large,slender,and complex plastic parts.The difficulty of forming large,slender and complex plastic parts required the use of a combination of numerical simulation and mold design,where simulation,design,and verification intersect and penetrate each other.According to the characteristics of the product,three pouring schemes were proposed,and the simulation results showed that Scheme 3 had the smallest amount of warping deformation,which was 4.51 mm.Verified the parameters such as shrinkage,filling time,filling contour,filling end time difference,and pressure difference of Scheme 3.The results showed that Scheme 3 had uniform filling,consistent end pressure,no shrinkage of the product,and no surface quality defects.Scheme 3 was a feasible scheme.Design the mold according to Scheme 3,including the pouring system,forming components,ejection mechanism,cooling system,etc.After the mold design was completed,the cooling system was verified.It was found that the temperature difference between the convex and concave molds was less than 10℃,and the mold temperature tended to be consistent without any risk of warping and deformation.The mold design according to Plan 3 could serve as the final plan and guide mold manufacturing and production.

关 键 词：汽车侧裙板 浇注系统 优化 冷却系统 模具设计 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] TQ320.66[自动化与计算机技术—计算机科学与技术]