基于数值模拟技术的塑料板凳注塑工艺参数优化

Molding Process Optimization of Plastic Bench Based on Numerical Analysis

为了得到最优的注塑工艺参数,缩短模具设计周期,降低成本,以日常生活中常用的塑料板凳为对象,利用Moldflow软件对注塑工艺参数进行优化。首先优化了冷却方式,在最佳的冷却方式下以注塑件的翘曲变形为主要优化目标,采用正交试验手段对注塑成型过程中的注塑温度、充填时间、保压压力及保压时间等参数进行优化。获得了翘曲变形量的主要影响因素,得到一个较优的工艺参数,为改善注塑件翘曲变形和缩短模具设计周期奠定了基础。

In order to obtain the best molding process parameters and shorten the design cycle and reduce the test cost of mold for the plastic bench, the common plastic bench in daily life was used to study its molding process optimization by Moldflow. Firstly, the way of cooling was optimized. Then in the best cooling way and with the warpage as the optimized objective, the injection temperature, cooling time, packing pressure and packing time were optimized by using orthogonal experiment method. And the major influence factors on the warpage and the optimization packing condition for warpage minimization were obtained. This laid a foundation for improving the warpage of injection molded parts and shortening the design cycle.