Abstract: In order to control two factors in plastic injection molding, warpage and shrinkage, an optimization method for the molding parameters was proposed based on correlative degree, Kriging model, and adaptive genetic-ant algorithm. The definition and calculation method of correlative degree were defined first, and the approximate model based on Kriging model and genetic-ant algorithm were introduced. In the case of plastic injection molding of fruit plate, the range of the technical parameters were first determined through orthogonal experiments, a approximate model was formulated based on Hyper-Latin square experiment and Kriging method, which was optimized via genetic-ant algorithm. The obtained parameters could well be applied to practical injection molding.

Key words: Plastic injection, Synthesis relation degree, Kriging model, Genetic-ant colonies algorithm