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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Injection Molding Analysis of the Tub-drum for Drum Type Washer Using CAE

CAE를 이용한 드럼 세탁기용 Tub-drum의 사출 성형 해석

  • 예상돈 (동의대학교 기계공학과) ;
  • 민병현 (동의대학교 기계공학과)
  • Received : 2010.03.02
  • Accepted : 2010.04.01
  • Published : 2010.04.30
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Abstract

Injection molding process is one of the popular manufacturing methods to produce plastic parts with high efficiency and low cost. The tub-drum for drum type washer is made by an insert injection molding process with aluminum alloy insert of windmill type and has a big and complex structure consisted of many ribs to sustain the strength. In this paper, the volumetric shrinkages of rib part and bottom part surrounded by a windmill type insert are analyzed according to the vertical and circumferential direction of tub-drum. Volumetric shrinkage and its difference according to the height or radius of tub drum inform the designer to reduce the warpage of tub drum, and the optimal design of tub drum can be done from the those results. The change of volumetric shrinkage according to packing pressure is also analyzed. It is very important to analyze the volumetric shrinkage of tub drum because it generates the wearing phenomena at the rotating part connected to an aluminum alloy insert due to the warpage of tub drum.

Keywords

References

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