Total Optimization of Plastic Injection Molding System

Abstract

Injection molded products have multiple quality requirements concerning dimensional accuracy, surface accuracy, burrs, etc., and these are affected by many factors, such as flow conditions, injection parameters, injection molding machine structure, and die structure. Previous quality engineering studies of injection molding systems have attempted to optimize each of these factors separately,but separate optimization has not always optimized the system as a whole. In this study, all factors involved in the total injection molding system were considered simultaneously and evaluated by simulation. This led to the simultaneous achievement of high dimensional and surface accuracy and greatly suppressed burrs, a result that had not been achieved by the conventional separate optimization method.