Design & Manufacturing

  • 제13권1호
  • /
  • Pages.48-54
  • /
  • 2019
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  • 2800-0323(pISSN)
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  • 2733-452X(eISSN)
한국금형공학회 (Korean Society of Die & Mold Engineering)
권호 표지

자동차 암레스트의 사출성형과 인몰드코팅에 관한 해석

Analysis for injection molding and in-mold coating of automotive armrests

  • 박종락 (한국교통대학교 항공기계설계학과) ;
  • 이호상 (한국교통대학교 항공기계설계학과)
  • Park, Jong-Lak (Dep. of Aeronautical & Mechanical Design Eng., Korea Nat'l Univ. of Transportation) ;
  • Lee, Ho-Sang (Dep. of Aeronautical & Mechanical Design Eng., Korea Nat'l Univ. of Transportation)
  • 투고 : 2019.02.21
  • 심사 : 2019.03.31
  • 발행 : 2019.03.31
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초록

Analytical and experimental study were carried out in order to achieve simultaneous coating and injection molding of an automotive armrest. A mold was designed to be included one core and two cavities, which were composed of a substrate cavity and a coating cavity. The materials used were PC/ABS for substrate and 2-component Polyurethane for coating. The predicted flow patterns were in good agreement with experimental results in injection molding and in-mold coating. Based on analysis and experiment, it was found that the optimal processing conditions were packing pressure of 90MPa and holding time of 7sec.

키워드

과제정보

연구 과제 주관 기관 : 산업통상자원부, 한국연국재단

참고문헌

  1. Park, C. H., Ahn, H. J., Choi, D. H. and Pyo, B. G., Two-stage design optimization of an automotive fog blank cover for enhancing its injection molding quality, Trans. of the KSME(A), Vol. 34, No. 8, pp. 1097-1103, 2010.
  2. Lee, H. S. and Kim, D. M., A study on mixing characteristics of two-component polyurethane for in-mold coating, J. Korean Soc. Precis. Eng., Vol. 30, No. 3, pp. 317-323, 2013. https://doi.org/10.7736/KSPE.2013.30.3.317
  3. Kim, D. M. and Lee, H. S., Experimental study on the processing conditions of in-mold coating for injection-molded plates, Int. J. Prec. Eng. Manuf., Vol. 17, No. 10, pp. 1333-1339, 2016. https://doi.org/10.1007/s12541-016-0158-x
  4. Park, J. R. and Lee, H. S., An experimental study of in-mold coating of automotive armrests, Trans. Korean Soc. Mech. Eng. A, Vol. 39, No. 7, pp. 687-692, 2015. https://doi.org/10.3795/KSME-A.2015.39.7.687
  5. Seo, B. H. and Lee, H. S., Development of two-component polyurethane metering system for in-mold coating, J. Korea Society of Die & Mold Engineering, Vol.10, No.2, pp. 1-6, 2016.
  6. Jeong, Y. Y. and Lee, H. S., Effects of coating thickness on cavity pressure and surface characteristics in in-mold coating, Polymer(Korea), Vol. 42, No. 1, pp. 13-19, 2018. https://doi.org/10.7317/pk.2018.42.1.13
  7. Sigmasoft User's Manual, Sigma Engineering GmbH, Aachen, 2012.