Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
권호 표지

A study on optimization of injection molding of large thick LH type elastic frame

대형 후육 LH형 탄성구조 프레임의 사출성형 최적화에 관한 연구

  • Lee, Sung-Hee (Department of Molding & Metal Forming R&D, Korea Institute of Industrial Technology)
  • 이성희 (한국생산기술연구원 금형성형연구부문)
  • Received : 2022.02.28
  • Accepted : 2022.03.31
  • Published : 2022.03.31
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Abstract

In the present study, the injection molding optimization of a large thick LH type elastic frames 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. In order to derive injection molding conditions that can minimize distortion of parts, it was investigated that the effects of mold temperature, resin temperature, injection time, hold pressure switching time, holding pressure and the hold time on deformation characteristics using the design of experiments. The main influential factors on the warpage were found from the optimization simulation and the geometry data of the warpage result was converted into an initial model for injection simulation. It was shown that a 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. The suggested inversed warpage model produced the best minimized result of warpage.

Keywords

Acknowledgement

본 연구는 "중소벤처기업부 구매조건부신제품개발사업(S2951123(SE210101))"에 의해 수행되었습니다.

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