Anti-deformation Design of Inject Mould for Air Filter Based on CAE
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The CAE technology is used to simulate and validate the filling,cooling and wrapping process of air filter with a flexible paper insert.According to the plastic part's feature,a pouring program with multi-spots is adopted to prevent the polymer melt from direct impacting on the paper insert.The concave deformation of the plastic frame is mainly caused by shrinkage but inevitable,therefore,a molding design program with a convex cavity is put forward to controlling the deformation of the assembly plane of air filter.By using a combination mode of vertical plastic injection molding machine with a moving mold and two fixed molds,both the forming efficiency is improved and the average cost is reduced greatly.The products have a good quality,which also accords with the simulation results.