Improving Productivity And Quality By Changing Feeding System In An Injection Moulding Process

Abstract

In this thesis, the feeding system for a plastic product is optimized to improve the productivity as well as the quality. A fan blade back cover is designed and modeled in 3D modeling software Creo 2.0. The process parameters considered in three cases, Case-1: Max Injection Pressure: 180MPa, Mold Temperature: 40 deg C, Melt Temperature: 300 deg C, Case-2: Max Injection Pressure: 260MPa, Mold Temperature: 60 deg C, Melt Temperature: 300 deg C and Case-3: Max Injection Pressure: 340MPa, Mold Temperature: 80 deg C, Melt Temperature: 300 deg C. The material is Polypropylene. A repeated number of analyses are carried out by plastic flow advisor which is a module in pro/Engineer software to reduce fill time, scrap and automatic degating by taking single gate and two gates using material Polypropylene. The parameters like fill time, shrinkage, weld lines, pressure drop, and air traps are analyzed by simulation in successive trials.