Elastomers and Composites

  • 제47권4호
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  • Pages.341-346
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  • 2012
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  • 2092-9676(pISSN)
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  • 2288-7725(eISSN)
한국고무학회 (The Rubber Society of Korea)
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컴퓨터 해석을 통한 사출압축성형의 성형특성에 관한 연구

A Study on the Molding Characteristics of Injection Compression Molding Through Computer Simulation

  • 천용호 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 안형광 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 류민영 (서울과학기술대학교 기계시스템디자인공학과)
  • Chun, Y.H. (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • An, H.G. (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Lyu, M.Y. (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology)
  • 투고 : 2012.10.11
  • 심사 : 2012.11.27
  • 발행 : 2012.12.31
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초록

사출성형은 고분자성형법 중에서 가장 광범위하게 활용되고 있다. 사출성형은 전형적인 사출성형 외에 가스사출, 물사출, 그리고 사출압축성형 등과 같이 특수한 사출성형방법들이 쓰인다. 사출압축성형은 사출과 압축공정이 합쳐진 것으로 균일한 물성 및 성형의 정밀도를 향상시키기 위하여 사용된다. 또한 사출압축은 잔류응력을 줄이는데도 효과적으로 사용되고 있다. 본 연구에서는 성형품의 형상에 따라 다양하게 나타나는 사출압축성형의 특성에 대해서 컴퓨터 해석을 통해 분석하였다. 성형품에 벽이 있는 제품은 벽의 두께가 압축의 방향과 직각이므로 압축효과가 작게 나타났다. 사출압축성형을 일반사출성형과 비교하였을 때 수축의 균일성 및 수축량 또는 성형수축률이 작게 나타나서 정밀성형에 유리하게 나타났다. 실험계획법을 통해 실제로 제작되고 있는 렌즈에 대해서 최적 사출압축조건을 구하고 이의 결과를 사출성형의 결과와 비교분석하였다.

Injection molding is one of the widely used polymer processing operations. It is being used for not only conventional injection molding but gas injection molding, water injection molding, and injection compression molding. Injection compression molding involves injection and compression operation, and it gives uniform physical property and high dimensional quality of product. In this study, injection compression characteristics for various product shapes have been investigated by computer simulation. Product containing side wall showed not much effective in injection compression molding since wall thickness direction was perpendicular to the compression direction. Uniform and low shrinkage was observed in injection compression molding comparing conventional injection molding. Subsequently injection compression molding can be used for molding precise product. Optimal injection compression molding condition was obtained using design of experiment for plastic lens and the results were compared with conventional injection molding.

키워드

참고문헌

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피인용 문헌

  1. Comparison of Molding Characteristics for Multi-cavity Molding in Conventional Injection Molding and Injection Compression Molding vol.38, pp.2, 2014, https://doi.org/10.7317/pk.2014.38.2.144
  2. Investigation of Molding Characteristics in Injection Compression Molding According to Molding Conditions through Birefringence vol.38, pp.2, 2014, https://doi.org/10.7317/pk.2014.38.2.193