座椅支撑板注塑成型过程模拟及翘曲变形优化

Simulation of Injection Process and Optimization of Warpage Deformation of a Seat Panel

针对某复合材料座椅支撑板,探究最大翘曲变形量的工艺参数优化方案。以注射时间、v/p切换体积、保压时间、保压压力、模腔温度及料筒温度为自变量设计正交试验,得到不同工艺参数组合下最大翘曲变形量。结果表明:各工艺参数对最大翘曲变形量的影响程度排序为:模腔温度>料筒温度>注射时间>保压时间>保压压力>v/p切换体积,并得到优化的工艺参数为A_(2)B_(3)C_(3)D_(1)E_(2)F_(1)。优化工艺下,最大翘曲变形量为7.384 mm,相比初始工艺降低42.1%,满足设计要求。模流分析及试模结果表明,产品外观状态良好,变形满足要求,验证优化工艺的可用性。

For a composite seat panel, the optimization scheme of process parameters for the maximum warpage deformation was explored. Orthogonal test was designed with injection time, v/p switching volume, holding time, holding pressure, cavity temperature and barrel temperature as independent variables to obtain the maximum warpage deformation under different process parameters. The results show that the influence of process parameters on the maximum warpage deformation is as follows: die cavity temperature>barrel temperature>injection time>holding time>holding pressure>v/p switching volume, and the optimized process parameters are A_(2)B_(3)C_(3)D_(1)E_(2)F_(1). Under the optimized process, the maximum warpage deformation is 7.384 mm, which is 42.1% lower than that of the initial process, meeting the design requirements.Moldflow analysis and test results show that the appearance of product is good and the deformation meets the requirements, which verifies the availability of the optimized process.