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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
권호 표지

A Study on Determining Optimal Gate Positions for Cavity Fill-Uniformity in Injection Molding Design

사출성형 설계에서 캐비티 충전 균형을 위한 수지 주입구의 최적 위치 결정에 관한 연구

  • 박종천 (금오공과대학교 기계공학부) ;
  • 성영규 (금오공과대학교 기계공학부)
  • Received : 2010.10.08
  • Accepted : 2010.11.18
  • Published : 2010.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

This study shows an optimization procedure for an automatic determination on the gate position to ensure the fill-uniformity within a part cavity by using the injection molding simulation. For an optimization, the maximum pressure-difference within a part cavity induced at the stage of filling is used to evaluate degree of fill-uniformity. In addition, a direct search scheme based on the reduction of design space is developed and applied in the optimization problem. This corresponding proposed methodology was applied in the optimization on the gate location for a CD-tray molding, as a result, showed the improvement of the fill-uniformity within the cavity.

Keywords

References

  1. 정영득, 구본흥, 사출성형 해석에 의한 제품 및 금형설계, pp.67-88, 인터비젼, 1994.
  2. 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
  3. Shen, C. Y. et al., "Gate Location Optimization in Injection Molding By Using Modified Hill-Climbing Algorithm," Polymer-Plastics Technology and Engineering, Vol.43, No.3, pp.649-659, 2004. https://doi.org/10.1081/PPT-120038056
  4. Lee, B. H. and Kim, B. H., "Automated Selection of Gate Location Based On Desired Quality of Injection-Molded Part," Polymer-Plastics Technology and Engineering, Vol.35, No.2, pp.253-269, 1996. https://doi.org/10.1080/03602559608000583
  5. 김종헌, 이종수, 이형주, 구본흥, "마이크 유전 알고리듬의 최적설계 응용에 관한 연구," 대한기계학회논문집(A), Vol.27, No.1, pp.158-166, 2003.
  6. Malloy, R. A., Plastic Part Design for Injection Molding, pp.40-43, Hanser, 2003.
  7. ED&C, Autodesk Moldflow Insight: The 4th edition of AMI Korean Manual, 2009.
  8. Yao, D., Direct Search-Based Automatic Minimization of Warpage and Weldlines in Injection Molded Parts, Masters Thesis, Univ. of Massachusetts, MA., 1998.
  9. 박종천, Kim, B. H., "사출 성형품의 휨과 웰드라인을 최적화하기 위한 자동 금형설계 방법," 한국소성가공학회지, Vol.9, No.5, pp.512-525, 2000.
  10. Fowlkes, W. Y. and Creveling, C. M., Engineering Methods for Robust Product Design, pp.129-130, Addison Wesley, 1995.