Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Effects of Packing Parameter on Plastic Article Dimensions in the Plastic Injection Molding

사출성형 시 성형제품치수에 미치는 패킹변수의 영향

  • 김범준 (오산대학교 기계공학과) ;
  • 신주경 (오산대학교 기계공학과) ;
  • 이정구 (오산대학교 기계공학과) ;
  • 손일선 (오산대학교 자동차공학과)
  • Received : 2013.12.04
  • Accepted : 2013.12.27
  • Published : 2014.01.01
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Abstract

The molding process can be divided into five separate steps: plastification, injection, holding, cooling, and finally ejection. In the plastic injection molding, the effect factor such as mold temperature, injection speed, packing pressure and inhomogeneous cooling under packing process affects both the article dimension and physical characteristics. Especially, the packing pressure is the most critical factor to affect molded articles quality among the packing parameters. In this paper, the CAE simulation considering the molding condition is performed to predict the faulty cause which appears in the packing process between cavities of injection molding machine. From the results of CAE simulation, the packing phenomena according to the product form and the gate position was investigated to improve the article quality and minimize the various molding defects. The effect of packing pressure and gate number on the injection molding was discussed.

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References

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