대형 후육 LH형 탄성구조 프레임의 사출성형 최적화에 관한 연구
A Study on Optimization of Injection Molding of Large Thick LH Type Elastic Frame
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초록
In the present study, the injection molding optimization of large thick LH type elastic frame for the reduction of warpage was performed. Two kinds of fine and coarse finite element models were prepared to investigate the efficiency of analysis time and quality on simulation results. To derive injection molding process conditions for minimum warpage of the part, it was investigated that the effects of mold temperature, a resin temperature, injection time, hold pressure switching time, holding pressure and the hold time on deformation characteristics using the design of experiments. Main effective factors on the warpage was found from the optimization simulation and the geometry data of warpage result was converted into a initial model for injection simulation. It was shown that coarse model with good mesh quality could be adapted for mold design since the total analysis time using the proposed model was reduced to 1/10 and the suggested inversed warpage model produced the best minimized result of warpage.
Abstract
In the present study, the injection molding optimization of large thick LH type elastic frame for the reduction of warpage was performed. Two kinds of fine and coarse finite element models were prepared to investigate the efficiency of analysis time and quality on simulation results. To derive injection molding process conditions for minimum warpage of the part, it was investigated that the effects of mold temperature, a resin temperature, injection time, hold pressure switching time, holding pressure and the hold time on deformation characteristics using the design of experiments. Main effective factors on the warpage was found from the optimization simulation and the geometry data of warpage result was converted into a initial model for injection simulation. It was shown that coarse model with good mesh quality could be adapted for mold design since the total analysis time using the proposed model was reduced to 1/10 and the suggested inversed warpage model produced the best minimized result of warpage.
참고문헌 (15)
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