Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Cycle Time Reduction with Automated Gate Cutting Mechanism and Injection/Compression Molding for Producing Mobile LGP

모바일용 도광판의 게이트 자동절삭 및 사출/압축 성형법을 적용한 사이클 타임 저감에 관한 연구

  • 민인기 (단국대학교 대학원 기계공학과) ;
  • 김종선 (한국생산기술연구원) ;
  • 윤경환 (단국대학교 대학원 기계공학과)
  • Received : 2011.11.24
  • Accepted : 2012.01.02
  • Published : 2012.04.01
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Abstract

Conventional injection molding system for producing extremely thin-wall parts such as Light Guide Plates(LGP's) for mobile displays is at the limit of its capability due to its tendency to develop frozen layers and the critical speed of injection. The molten polymer in the cavity freezes quickly as its heat is rapidly transferred to the mold base. Many attempts have been tried in the past to overcome this problem. The present study used the injection/compression molding technology to produce a thin-wall part, with enhanced features such as an automated mechanism for cutting gates. As a result, the total cycle time was reduced by almost 35 seconds, resulting in a productivity increase by 30%.

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References

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