Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Study of injection molded pattern transferability of double-sided micro-patterned automotive thick light guides

양면 마이크로 패턴 차량용 후육 라이트 가이드의 사출성형 패턴 전사성에 관한 연구

  • Dong-won Lee (Korea Institute of Industrial Technology, Research Institute of Advanced manufacturing & materials Technology) ;
  • Sang-Yoon Kim (Korea Institute of Industrial Technology, Research Institute of Advanced manufacturing & materials Technology) ;
  • Ji-Woo Kim (Korea Institute of Industrial Technology, Research Institute of Advanced manufacturing & materials Technology) ;
  • Jong-Su Kim (Korea Institute of Industrial Technology, Research Institute of Advanced manufacturing & materials Technology) ;
  • Sung-Hee Lee (Korea Institute of Industrial Technology, Research Institute of Advanced manufacturing & materials Technology)
  • 이동원 (한국생산기술연구원 뿌리기술연구소) ;
  • 김상윤 (한국생산기술연구원 뿌리기술연구소) ;
  • 김지우 (한국생산기술연구원 뿌리기술연구소) ;
  • 김종수 (한국생산기술연구원 뿌리기술연구소) ;
  • 이성희 (한국생산기술연구원 뿌리기술연구소)
  • Received : 2023.12.15
  • Accepted : 2023.12.31
  • Published : 2023.12.31
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Abstract

In this study, we investigated the injection molding technology of thick-walled light guides, which are parts that control the light source of automotive lamps. Through injection molding analysis, the gate position that can minimize product shrinkage and deformation was selected, and a mold reflecting the analysis results was manufactured to evaluate the effect of injection speed and holding pressure on transferability during micro-pattern molding through experiments. When designing an injection mold for products with varying thicknesses, it was found that installing the gate on the side of the thicker part was advantageous for reducing volume shrinkage and deformation. It was found that the effect of shrinkage due to thickness may be greater than the position of the gate on pattern transferability. The pattern transfer error decreased as the injection speed and holding pressure increased, and it was found that increasing the injection speed was relatively effective.

Keywords

Acknowledgement

본 연구는 산업통상자원부의 소재부품산업기술개발기반구축사업의 '글로벌시장진출을 위한 차세대 자동차용 R100 , Ra20nm급 디지털 라이트닝 초미세 Light Guide 모듈 금형성형기술 개발(KM230100, 20019131)'과제의 지원을 받아 수행되었다.

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