微分注塑成型工艺的数值模拟与实验研究

he prototype of differential injection molding machine that theoretically based on the melt differential principle have been fabricated successfully. Basic researches of differential injection molding technology are implemented. Numerical simulation method are applied to realize structural optimization for eliminating these problems that existed in the prototype, and also used for optimization of molding parameters. System stability of the novel technology are investigated through experimental study. Product repeatability and pressure curves of outlets are used to characterize the stability of molding system. Study results indicated that differential injection molding technology that based on melt gear pump can realize mass production of micro plastic products, but instability of equipment need to be removed urgently.