Injection Molding Process Analysis Of Overlay Based On Mold Flow

In recent years,more and more products in the manufacturing industry begin to use plastic materials.The quality and cost of plastic materials are lower than that of metal materials,and they have higher performance than metal materials in specific environment.The automobile industry occupies an indispensable position in the industrial development.Plastic materials are lighter than metal materials and have better plasticity.The application of plastic materials is also greatly increased.However,plastic materials in the molding process are prone to a certain degree of defects,such as insufficient filling or weld lines,cavitation and other issues.In the past,the designers of automobile parts injection molding enterprises usually design the mold according to their experience,and then adjust the test data until they get the process parameters in line with the production.But this method is time-consuming and laborious,and easy to "detour",resulting in unnecessary waste.Nowadays,most automobile and other manufacturing enterprises begin to use computer aided engineering(CAE)to simulate the injection molding process.The cycle of mold design and development is greatly shortened,and the enterprise cost is reduced.In this paper,the injection molding process of plastic parts is simulated and analyzed by using CAE mold flow software.According to the obtained data,a series of defects in the actual production process of plastic parts are treated,such as insufficient filling,warping deformation,weld line and so on.By optimizing the simulation data and changing the process parameters,the mold design is optimized to get a better design scheme,improve the efficiency of mold design and optimization,and greatly improve the actual productivity of enterprises.In this paper,taking an automobile panel plastic part as an example,the molding process is numerically simulated by using CAE software mold flow.Aiming at the problems such as cavitation,weld line and warpage,new gating system and cooling system are optimized and designed,and different schemes are simulated and analyzed respectively.By analyzing the filling time and weld line of the two gating systems,it is determined that the single gate gating system is better;by analyzing the three cooling system schemes,it is concluded that the cooling system with better cooling effect is combined with the structural characteristics of the mold.Finally,the optimal scheme is obtained by combining the optimization scheme of cooling system and gating system.Finally,the mold design and process parameters of the final optimization scheme obtained by mold flow software are verified in the actual production.The experimental results are compared with the simulation results,which verifies the authenticity and reliability of the simulation analysis results,which can be used for mold design and Optimization in actual production.