INFLUENCE OF FEEDING SYSTEM IN INJECTION MOULDING FOR LOWER WASHER OF A BEARING

Vikas B J, Chandra Kumar R

Abstract: Optimisation of cycle time, avoid scrap and manual interface plays a vital role in manufacturing of plastic parts to improve the productivity of the process and at the time it should not affect the quality of the final product. This paper describes the influence of gate location and size through a repeated number of analyses which is carried out by plastic flow advisor software to reduce fill time, scrap and automatic degating. The process parameters like fill time, shrinkage, weld lines, pressure drop, and air traps are analysed by simulation in successive trials. Experimental verification has been done with new optimised gate location with designed mould in injection moulding machine. The results showed an improvement in fill time from 1.64 sec to 1.2 sec with increase in injection pressure by 15 MPa. Shrinkage and air traps were reduced minimising trouble shooting defeats.

Keywords: Plastic Injection mould, Mould Flow Plastic Advisor, Feeding system, Submarine gate, Nylon 6/6 30% GF

DOI: https://doi.org/10.15623/ijret.2013.0208061