Design & Manufacturing

  • 제18권1호
  • /
  • Pages.18-25
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  • 2024
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  • 2800-0323(pISSN)
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  • 2733-452X(eISSN)
한국금형공학회 (Korean Society of Die & Mold Engineering)
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자중을 이용한 곡면유리의 열 성형 공정에서 금형의 형상이 미치는 영향에 관한 연구

A Study on the effect of mold shape in thermal molding process of curved glass using self-weight

  • 이광호 (한국생산기술연구원 지능화뿌리기술연구소) ;
  • 이동원 (한국생산기술연구원 지능화뿌리기술연구소) ;
  • 김순욱 (국민대학교 기계공학부) ;
  • 김종수 (한국생산기술연구원 지능화뿌리기술연구소)
  • Kwang-Ho Lee (Korea Institute of Industrial Technology, Research Institute of Intelligent Manufacturing & Materials Technology) ;
  • Dong-Won Lee (Korea Institute of Industrial Technology, Research Institute of Intelligent Manufacturing & Materials Technology) ;
  • Soon Wook Kim (School of Mechanical Eng., Kookmin Univ.) ;
  • Jong-Su Kim (Korea Institute of Industrial Technology, Research Institute of Intelligent Manufacturing & Materials Technology)
  • 투고 : 2024.03.15
  • 심사 : 2024.03.31
  • 발행 : 2024.03.31
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초록

In-car monitors in automobiles are increasingly being applied in the form of curved displays that combine the traditional instrument panel and center display. When molding the curved glass for these curved displays, it is necessary to achieve the desired curvature to improve the quality and aesthetics, while forming a clean surface. However, when applying a bending method that applies direct pressure to such glass, indentations are generated due to compressive stress, and a curved glass molding method that generates curvature by deflection due to self-gravity without direct pressure is being researched. In this thermoforming process of curved glass using self-weight, the heat source that heats the glass is an important factor. In this process, the heat source can be considered as a lamp that provides direct heat and the temperature of the mold that supports the glass. In this study, finite element analysis was performed using finite element analysis software (Ansys) to determine the effect of mold geometry during the forming process to obtain the desired curvature of glass by thermal and gravitational deflection without direct pressure. Experiments were also performed to compare the results with the actual glass gravitational deflection behavior using the mold geometry optimized through finite element analysis (FEA). This showed the effect of the mold shape on the shape of the heated curved glass when the thermoforming process is performed using self-weight without applying direct pressure.

키워드

과제정보

본 연구는 산업통상자원부의 기계·장비산업기술개발사업 중 '곡면 멀티 디스플레이 상압 본딩 지능화 장비 개발 및 실증(KM230303, 20023669)'과제의 지원을 받아 수행되었다.

참고문헌

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