Method for determining plastic product injection molding process parameters and method for establishing coefficient library thereof

Abstract

The invention discloses a method for determining plastic product injection molding process parameters and a method for establishing a coefficient library thereof, and the method for establishing the coefficient library of the injection molding process parameters comprises the following steps: establishing a three-dimensional model for various plastic products and carrying out numerical simulationanalysis for many times to obtain first theoretical injection molding process parameters of various plastic products; based on the adjustment values of the first theoretical injection molding processparameters of the various plastic products, performing multiple times of mold testing on the various plastic products, and determining actual injection molding process parameters of the various plastic products; determining coefficients of the injection molding process parameters of the various plastic products according to the actual injection molding process parameters of the various plastic products and the first theoretical injection molding process parameters; and forming a coefficient library of the injection molding process parameters according to the coefficients of the injection molding process parameters of various plastic products. By implementing the invention, the waste of related mold testing resources can be reduced, the mold testing time before mass production can be saved,the blindness can be reduced, the effective utilization rate of injection molding equipment can be improved, and products with controllable quality can be produced.

Description

technical field [0001] The invention relates to the technical field of injection molding technology, in particular to a method for determining parameters of injection molding technology for plastic products and a method for establishing a coefficient library. Background technique [0002] The main theoretical basis of the existing method for determining the injection molding process parameters is the physical property table of plastic raw materials. Generally, mold testers conduct multiple mold trials according to the process parameters in the material physical property table, and then obtain the determined injection molding process parameters. However, the process parameters in the material physical property table are inconsistent with the recommended ranges for different materials. According to the recommended range in the material physical property table for mold testing, it is necessary to verify the process range multiple times, which wastes related mold testing resource...

AI Technical Summary

Problems solved by technology

However, the process parameters in the material physical property table are inconsistent with the recommended ranges for different materials. According to the recommended range in the material physical property table for mold testing, it is necessary to verify the process range multiple times, which wastes related mold testing resources and takes a long mold testing cycle; In addition, the influence of human factors is obvious in the process of mold testing. The mold testing personnel only rely on past experience or inexperienced probabilistic debugging, lack of theoretical scientific basis, blindness is large, and product quality is highly variable.

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