Group Members
Dilip Bhattrai Upadhyay Nirajan Ghimire Parbat Thapa
Project Abstract:
Injection Molding is rapid method for production of Plastic Parts. Its complexity and the enormous amount of process parameter manipulation during real time production create very intense effort to maintain the process under control. This project is primarily concerned towards designing, analyzing and finding optimal set of process parameters on the molding machine and auxiliary equipment and other subsystem provided.
The main goal in this injection molding project is to improve the quality of injection molded parts, together with reducing the cycle time and production cost. The design of industrial safety helmet has been done in Solidworks, which is simulated using MoldEx3D. Design of experiment (DoE) is employed and Taguchi orthogonal array is used to find out the most significant process variables affecting the injection molding. High Density Polyethylene (HDPE) have been used as helmet material. After several simulations on the MoldEx3D and using design of experiment, optimum parameter values for design and production of injection molded part has been obtained. From the results, melt temperature is the contributing factor on quality of mold. Optimization of melt temperature by 9.3%, injection pressure by 5.1% and packing time by 10.5% has resulted in optimization of volumetric shrinkage by 39% and warpage by 28%.