Abstract:

To investigate the optimum injection molding process conditions for the upper and lower covers of a socket， the Moldex3D software was used to simulate and compare three different feeding schemes. The latent four⁃point gluing was finally determined to be the best scheme. Subsequently， an orthogonal test method was used to explore the optimal injection molding process under this scheme. The results indicated that the factors affecting the warpage of the plastic parts was followed by an order of holding time>melt temperature>mold temperature>holding pressure. The optimum process parameters were determined to be a melt temperature of 200 ℃， a mold temperature of 45 ℃， a holding time of 25 s， a holding pressure of 55 %. After simulation verification， the maximum warpage value after optimization was determined to be 0.863 mm， which increased by 0.574 mm compared to that obtained under the initial process conditions. This result was optimized by nearly 40 %， and the product quality was effectively improved.

Key words: socket housing, orthogonal test, mold flow analysis, process optimization, warping deformation