| Summary: | 碩士 === 大同大學 === 機械工程學系(所) === 100 === Abstract
The gate location for injection molding plays an important role for quality of plastic product. It often depends on the designer’s experiences using the process of trial-and-error for gate location design. Even through the designer could find out the design fitting the requirements through several trials, but it still cannot guarantee that the results are good enough specially for complicated shape or high precision product.
In recently years, the computer-aided engineering (CAE) contributes for enhancing design ability for development of high precision and complicated products. The products manufactured using injection molding may create some defects such as warpage or welding line which was influenced to the quality of products.
The main purpose of this study is using differential evolution algorithm as global searching tool for optimization of gate location. In order to verify the architecture and performance of optimization program using differential evolution algorithm, several test functions are utilized to check execution efficiency and the accuracy of developed program first. Then the developed DE program was integrated with moldflow software for searching the best gate location that minimizes the warpage with constraint of the arrangement of weld line.
From the result of case study, it was shown that the integration of DE with moldflow implemented in this study could offer designer with different options in selection the best arrangement of gate locations of injection molding with constraints of weld lines prevention and warpage reduction. The developed architecture can enhance the performance of gate location design, improvement of product quality, reduction of development cost and enhancement of market competition.
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