Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Development of Direct Metal Tooling (DMT) Process for Injection Mold Core with Curved Conformal Cooling Channel

곡선형 형상적응형 냉각채널을 갖는 금형 코어 제작을 위한 DMT 공정개발

  • 한지수 (한국생산기술연구원 극한가공기술그룹) ;
  • 유만준 (구미에이테크솔루션(주)) ;
  • 이민규 (한국생산기술연구원 극한가공기술그룹) ;
  • 이윤선 (한국생산기술연구원 극한가공기술그룹) ;
  • 김우성 (한국생산기술연구원 극한가공기술그룹) ;
  • 이호진 (한국생산기술연구원 극한가공기술그룹) ;
  • 김다혜 (한국생산기술연구원 극한가공기술그룹) ;
  • 성지현 (한국생산기술연구원 극한가공기술그룹) ;
  • 차경제 (한국생산기술연구원 극한가공기술그룹)
  • Received : 2019.08.06
  • Accepted : 2019.09.18
  • Published : 2019.11.30
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Abstract

The cooling rate and the uniformity of mold temperature, in the injection molding process, possess great influences on the productivity and quality of replications. The conformal cooling channel, which is of a uniform spacing from the mold cavity by the metal additive manufacturing process, receives much attention recently. The purpose of this study is to develop a mold core with a curved conformal cooling channel for a pottery-shaped thick-wall cosmetic container through the hybrid method of direct metal tooling (DMT) process. In this study, we design a mold core that contains the curved cooling channel for the container. A method that divides the cavity is proposed and the DMT process is carried out to form the curved cooling channel. The test mold core, with the curved conformal cooling channel, has been fabricated by the proposed method to confirm the feasibility of the design concept. We show that no leakage is observed for the additive manufactured test mold core, and its physical properties demonstrate that it can be sufficiently used as the injection mold core.

Keywords

References

  1. Qiao, H., "A Systematic Computer-aided Approach to Cooling System Optimal Design in Plastic Injection Molding", International Journal of Mechanical Sciences 48, pp. 430-439, 2006. https://doi.org/10.1016/j.ijmecsci.2005.11.001
  2. Park, S. J. and Kwon, T. H., "Optimal Cooling System Design for the Injection Molding Process," Polymer Engineering and Science, Vol. 38, pp. 1450-1462, 1998. https://doi.org/10.1002/pen.10316
  3. Altan, T., Lilly, B. and Yen, Y. C., "Manufacturing of Dies and Molds," CIRP Annals, Vol. 50, Issue 2, pp. 404-422, 2001. https://doi.org/10.1016/S0007-8506(07)62988-6
  4. Ahn, D. G., “Direct Metal Additive Manufacturing Process and Their Sustainable Applications for Green Technology : A Review,” International Journal of Precision Engineering and Manufacturing-Green Technology, Vol. 3, No. 4, pp. 381-395, 2016. https://doi.org/10.1007/s40684-016-0048-9
  5. Chen, L., He, Y., Yang, Y., Niu, S. and Ren, H., "The Research Status and Development Trend of Additive Manufacturing Technology," The International Journal of Advanced Manufacturing Technology, pp. 3651-3660, 2017.
  6. Sachs, E., Wylonis, E., Allen, S., Cima, M. and Guo, H., “Production of Injection Molding Tooling with Conformal Cooling Channels using the Three Dimensional Printing Process,” Polymer Engineering and Science, Vol. 40, No. 5, pp. 1232-1247, 2000. https://doi.org/10.1002/pen.11251
  7. Jahan, S. A. and El-Mounayri, H., "Optimal Conformal Cooling Channels in 3D Printed Dies for Plastic Injection Molding," Procedia Manufacturing, Vol. 5, pp. 888-900, 2016. https://doi.org/10.1016/j.promfg.2016.08.076
  8. Park, H. S. and Dang, X. P., "Development of a Smart Plastic Injection Mold with Conformal Cooling Channels," Procedia Manufacturing 10, pp. 48-59, 2017. https://doi.org/10.1016/j.promfg.2017.07.020
  9. Ahn, D. G., Park, S. H. and Kim, H. S., “Manufacturing of an Injection Mould with Rapid and Uniform Cooling Characteristics for the Fan Parts using a DMT Process,” International Journal of Precision Engineering and Manufacturing, Vol. 11, No. 6, pp. 915-924, 2010. https://doi.org/10.1007/s12541-010-0111-3
  10. Kim, W. S., Hong, M. P., Park, J. S., Lee, Y. S. and Cha, K. J., "Case Studies on Applications of Conformal Cooling Channel Based on DMT Technology," Journal of the Korean Society of Manufacturing Process Engineers, pp. 9-14, 2015.
  11. Hong, M. P., Kim, W. S., Sung, J. H., Kim, D. H., Bae, K. M. and Kim, Y. S., “High-performance Eco-friendly Trimming Die Manufacturing using Heterogeneous Material Additive Manufacturing Technologies,” International Journal of Precision Engineering and Manufacturing-green Technology, Vol. 5, No. 1, pp. 133-142, 2018. https://doi.org/10.1007/s40684-018-0014-9
  12. Available on http://www.tokkin.com/materials/stainless_steel/martensite.