Patent ID: 7465416

Claim:
A method for obtaining a mold design parameters, in an event of implementation of injection molding using a mold having a plurality of resin inflow conduits to cavity, comprising a step of obtaining a mold design parameter which is related to at least one of the arrangement, the shapes and the sizes of said resin inflow conduits, by combination of a numerical analysis method for calculating an injection molding process and a computer-aided optimization method, for the purpose of obtaining a desired injection molding condition, wherein said purpose is to obtain a molding condition in which weld line occurrence in a molding can be suppressed or controlled, and wherein an areas in which weld line occurrence is intended to be suppressed or controlled is divided into a plurality of areas and a weighting weld line occurrence quantity in the plurality of the areas is used as a weld line evaluation value, thereby inducing weld line occurrence into a specified area or avoiding weld line occurrence in a specified area.