FINITE ELEMENT ANALYSIS AND DESIGN OPTIMIZATION OF PLATEN FOR INJECTION MOLDING MACHINE

Abstract

Plastics are certainly most versatile of all known materials today and have therefore, entrenched themselves in enviable position from where are not even possible to replaced. Injection molding machine is one of the most widely used method of conversion of plastic into various end products application to wide range of plastic materials from plastic commodity to specialty engineering plastic. In injection molding machine, platen plays a predominant role. During the process generally compressive stress generates at particular regions. As load varies with fast rate there is chance to failure of tie bar rod. Due to heavy mould shape, size of platen also changes, that’s increase its weight as well as stress level at certain region and this is not good in practice. As this leads to failure of platen or failure of tie rod due to stretching by nut and platen. The aim of this research is study about those areas where stress can affect the failure of tie bar due to heavy weight of platen the deflection or misalignment with movable platen. Finally redistribution of stress so that uniform stress is achieved (optimization of platen). This project is including Finite Element Analysis and Optimization of a Typical Structural Component i.e. stationary platen of a Plastic Injection Molding Machine. The aim of project is to optimize a typical structural component (platen) by using finite element analysis after checking induced stresses with allowable design stress. Optimize design of platen with the use of removing material from them. Hence design modification of platen is carried out to achieve good strength and cost effectiveness.