Analysis Of The Injection Molding And Mold Design Of The Small Car Plastic Parts

With the pursuit of high quality of life, the car industry is toward lightweight and low noise direction. Car plastic parts can meet the needs of the development of car industry, so they are more and more widely used in the car industry. The traditional method in the development of the important plastic interior door mainly relies on artificial experience, lack of scientific basis; many times are repeatly needed from design to injection molding, not only wasting much manpower and material resource, but also having various defects of the products. The injection molding CAE technology largely breaks through the limitation of traditional method. The issue analyzes the injection molding process of the car door parts by the injection molding CAE technology, and can effectively predict the problems arising in the molding process through the process of injection molding of plastic parts. The mold design can be provided scientific basis and the development efficiency of the plastic parts can be improved.Firstly, the article determines the possible ingate location programs together the theoretically best ingate location with structural characteristics of plastic parts, makes feasibility analysis between various programs and comparing the feasible programs, and determines the actual optimum ingate location; the gating system can be designed based on the results.Then we can make out the feasibly colling programs according to structural characteristics of plastic parts and material properties and make comparison to determine the optimum program; the optimum program will be improved to determine the best cooling system. Finally, we can make out a series of parameters according to the scope of the process parameters of plastic and carry out the analysis of optimal injection molding process parameters to determine the optimal injection molding process parameters; the formed parts and the parting and core-pulling system are also designed.The artical determines the best solution casting system, cooling system solutions and the best injection molding process parameters after the study. The mold is designed based on the results; the design efficiency is greatly improved and scientific guidance is provied in the actual injection molding of plastic parts.