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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Optimization of Injection Molding Design Using Two-Characteristic Value Function Methodology

두 특성의 가치함수를 이용한 사출성형의 최적 설계

  • Park, Jong-Cheon (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Kim, Kyung-Mo (School of Industrial Engineering, Kumoh National Institute of Technology)
  • 박종천 (금오공과대학교 기계공학과) ;
  • 김경모 (금오공과대학교 산업공학부)
  • Received : 2014.12.04
  • Accepted : 2015.02.06
  • Published : 2015.02.28
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Abstract

Optimizing multiple design characteristics which are usually in conflict with each other in the injection molding process is frequently becoming a critical problem for designers who work in this area. The purpose of this work is to develop an automated design methodology for optimizing two such design characteristics found in injection-molded parts. A value function based on decision-making theory is used as a means of evaluating the performance of a two-characteristic design alternative. Also, a design space reduction algorithm based on Taguchi's orthogonal arrays is utilized to discover an optimal design alternative. Verification of the developed design methodology is carried out for an actual model with two design characteristics, the weld line and the gate location, to be optimized in computer simulation experiments.

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References

  1. Yao, D., "Direct Search-Based Automatic Minimization of Warpage And Weldlines in Injection Molded Parts", Master's Thesis, U. of Massachusetts, MA, pp. 1-135, 1998.
  2. Liao, S. J., Chang, D. Y., Chen, H. J., Tsou, L. S., Ho, J. R., Yau, H. T. and Hsieh, W. H., "Optimal process conditions of shrinkage and warpage of thin-wall parts," Polymer Engineering and Science, Vol. 44, No. 5, pp. 917-928, 2004. https://doi.org/10.1002/pen.20083
  3. Zhai, M. et al., "Automated Selection of Gate Location for Plastic Injection Molding Processing," Polymer-Plastics Technology and Engineering, Vol. 44, pp. 229-242, 2005. https://doi.org/10.1081/PTE-200048523
  4. Erzurumlu, T. and Ozcelik, B., "Minimization of warpage and sink index in injection-molded thermoplastic parts using Taguchi optimization method," Materials and Design, Vol. 27, pp. 853-861, 2006. https://doi.org/10.1016/j.matdes.2005.03.017
  5. Zhou, J. and Turng, L.S., "Adaptive Multiobjective Optimization of Process Conditions for Injection Molding Using a Gaussian Process Approach," Advances in Polymer Technology, Vol. 26, No. 2, pp. 71-85, 2007. https://doi.org/10.1002/adv.20092
  6. Deng, Y. M. et al., "Injection Molding Optimization for Minimizing the Defects of Weld Lines," Polymer-Plastics Technology and Engineering, Vol. 47, pp. 943-952, 2008. https://doi.org/10.1080/03602550802274555
  7. Chen, W.C., Fu, G.L., Tai, P.H. and Deng, W.J., "Process parameter optimization for MIMO plastic injection molding via soft computing," Expert Systems With Applications, Vol. 36, pp. 1114-1122, 2009. https://doi.org/10.1016/j.eswa.2007.10.020
  8. Zhai, M. and Xie, Y., "A Study of Gate Location Optimization of Plastic Injection Molding Using Sequential Linear Programming," Int'l J. of Advanced Manufacturing Technology, Vol. 49, No. 1, pp. 97-103, 2010. https://doi.org/10.1007/s00170-009-2376-1
  9. Mehat, N.M. and Kamaruddin, S., "Multi-Response Optimization of Injection Moulding Processing Parameters Using the Taguchi Method," Polymer-Plastics Technology and Engineering, Vol. 50, pp. 21519-1526, 2011.
  10. Cho, S.B. et al., "Determination of Valve Gate Open Timing for Minimizing Injection Pressure of an Automotive Instrument Panel," Transactions of KSAE, Vol. 20, No. 4, pp. 46-51, 2012.
  11. Keeney, R. L. and Raiffa, H., Decisions with Multiple Objectives : Preferences and Value Tradeoffs, John Wiley & Sons Inc., NY, pp. 282-343, 1993.
  12. Kim, K.M., Yin, J.J. and Park, J.C., "Optimization of Sheet Metal Forming Process Based on Two-Attribute Robust Design Methodology," J. of KSMPE, Vol. 13, No. 2, pp. 55-63, 2014. https://doi.org/10.14775/ksmpe.2014.13.2.055
  13. Phadke, M.S., Quality Engineering using Robust Design, AT&T Bell Laboratories, pp. 285-319, 1992.
  14. Fowlkes, W.Y. and Creveling, C.M., Engineering Methods for Robust Product Design, Addison-Wesley Publishing Company, New York, pp. 371-388, 1995.
  15. Kota, S. and Chiou, S.J., "Use of orthogonal arrays in mechanical synthesis," Mechanism and Machine Theory, Vol. 28, No. 6, pp. 777-794, 1993. https://doi.org/10.1016/0094-114X(93)90021-M
  16. Park, J.C., Kim, K.H., Kim, K., and Koo, B.H., "Minimization of Warpage in Injection-molded Parts By Optimal Design of U-type Ribs," J. of KSMPE, Vol. 7, No. 1, pp. 53-61, 2008.
  17. Schmidt, S.R. and Launsby, R.G., Understanding Industrial Designed Experiments, Air Academy Press, pp. 5-2-5-3, 1997.
  18. ED&C, Autodesk Moldflow Insight: The 4th edition of AMI Korean Manual, 2009.
  19. Bukhman, I., TRIZ Technology for Innovation, Cubic Creativity, pp. 85-105, 2012.