Optimization of Plastic Moulding by Reducing Warpage With the Application of Taguchi Optimization Technique & Addition of Ribs in Washing Machine Wash Lid Component

Abstract

This paper deals with the optimization of plastic moulding by reducing warpage with the application of Taguchi optimization technique & part design modifications. Taguchi optimization technique is used for determining the optimum plastic injection moulding process parameters. In part design modifications, ribs are added to the wash lid component to provide additional strength to the washing machine. Analysis of the process parameters are initially carried out by utilizing the combination of process parameters based on three-level of L27 Taguchi orthogonal design. Further, signal-to-noise (S/N) ratio is applied to find the optimum process parameters for warpage defect in the wash lid component. The design modifications and analysis for warpage using optimum parameters obtained from S/N ratio using Pro-E design software and Solid Edge Plastic analysis software. The results obtained reveals that improvement in total warpage is 22.0% & in X-direction it is 37% and stress distribution is by 28% which proves that the strength of the wash lid has increased.