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以某安全箱箱体为例,将最大缩痕指数和最大翘曲变形作为优化目标,以模具温度、熔体温度、注射速率、保压压力和保压时间为设计变量,通过正交试验设计及有限元模拟,获取试验样本;基于Isight参数优化软件,建立安全箱箱体注塑成型工艺参数与优化目标之间的响应面近似模型;利用非支配排序遗传算法在响应面模型内自主寻优,获取一组安全箱注塑成型的最优工艺参数;根据数值分析结果设计了注塑模具,按最优工艺参数试模,一次性试模成功。结果表明该方法可快速、有效实现注塑成型工艺优化。
Taking a box of safety box as an example, the maximum shrinkage index and the maximum warping deformation are taken as the optimization targets. The mold temperature, the melt temperature, the injection rate, the holding pressure and the dwell time are taken as design variables. Through the orthogonal experimental design Based on Isight parameter optimization software, an approximate model of response surface between injection molding process parameters and optimization target of safety box was set up. The non-dominated ranking genetic algorithm was used to optimize the response surface model, Get a set of safety box injection molding process parameters of the best; According to the numerical analysis of the results of the design of the injection mold, according to the best parameters of the trial process, a one-time test success model. The results show that this method can quickly and effectively achieve injection molding process optimization.