プラスチック射出成形金型の冷却管最適配置設計法の研究(機械要素,潤滑,工作,生産管理など)

概要

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This paper proposes a method for optimum layout design of cooling channels in plastic injection molding die. The optimum design problem of cooling channels is considered as the shape optimization problem, and the basis vector method is used to determine the optimum design of cooling channels. One of the important factors in molded defects is to reduce the residual stress in the plastic products. The temperature distribution in the die and cooling velocity of plastic will cause the residual stress in the plastic. That is, the two objective functions that are the temperature distribution and cooling velocity are minimized simultaneously. The response surface method based on the Design of Experiment to approximate the objective functions is employed to reduce the computational costs. The weighted sum method is employed to find Pareto optimal solutions. Additionally, the coolant flow is considered, and the effects with and without considering the coolant flow are also discussed. Through numerical examples, it is shown that some curved layouts of cooling channels are obtained.
社団法人日本機械学会の論文
2008-03-25