Parametric Modelling and Analysis of Reciprocating Screw of Injection Moulding Machine

Abstract

Injection moulding is one of the most widely used methods of conversion of plastic into various products applicable to various plastic materials from plastic raw material to engineering plastic. Injection moulding machine is the most widely used for the fabrication of plastic parts. The reciprocating screw is a critical component of injection moulding machine. The plastic being melted in injection moulding machine and then injected into the mould. The barrel contains reciprocating screw for injecting the material into the mould and the material is also melted into the barrel. Material is melt by the ceramic heaters into the barrel. This project deals with, the solution of problem occurred in reciprocating screw of Injection moulding machine while reciprocating screw varies model to model. It identifies and solves the problem by the parametric modelling. The aim of the project is to carry out parametric modelling of reciprocating screw whenever screw diameter varies in different models for easy modification of dimensions. For 69.8 mm diameter, static structural analysis is carried out. For static structural analysis of 69.8mm diameter, the directional deformation and factor of safety of reciprocating screw checked for design life. For 69.8 mm diameter, transient thermal analysis is carried out. For static structural analysis of 69.8mm diameter, temperature, total heat flux and directional heat flux of reciprocating screw checked to reduce wearing of threads.