Research of Quality Evaluation by Injection Molding Simulation

Abstract

This is a study in the optimization of injection molding. Melted plastic resin has the property of shrinking as it cools and hardens. Since the shrinkage rate differs depending on location, some locations depart widely from their target dimensions. Research into the evaluation of transferability is directed toward the mitigation of this problem and to the establishment of injection molding technology. Experiments using a test piece for optimization of the molding conditions were reported previously. In the present study, the same evaluation of transferability was carried out through simulation, optimum solutions were found to the design of the product and mold, and improvement in the variability of shrinkage was confirmed. Repeatability was also confirmed between the simulation results and the actual molding process.