Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Verification of gate balancing equation using injection molding analysis

사출성형해석 연구를 이용한 게이트 밸런스 계산식의 검증

  • Han, Seong-Ryeol (Department of Metalmold Design Engineering, Kongju National University)
  • 한성렬 (국립공주대학교 금형설계공학과)
  • Received : 2018.10.23
  • Accepted : 2018.12.01
  • Published : 2018.12.01
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Abstract

In a multi-cavity mold having a runner layout of a fish bone structure, problems of unbalanced filling between cavities occur constantly. Unbalanced charging lowers the dimensional accuracy of a molded article and causes deformation after molding. To solve this problem, the gate size connected to each cavity is adjusted using the BGV (Balanced Gate Value) equation. In this paper, in order to solve the filling imbalance problem of the runner layout mold of fish bone structure through injection molding analysis study, we compared the charging imbalance phenomenon before and after improvement after adjusting the gate size by applying BGV equation. From the results of the molding analysis, the shrinkage ratio before and after the improvement of the molded article was improved by only about 0.08%. Based on these results, it was confirmed that the charging imbalance problem was not significantly improved even when the BGV equation was applied.

Keywords

References

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