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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on the Process Optimization of Microcellular Foaming Injection Molded Ceiling Air-Conditioner 4-Way Panel

초미세발포 사출성형을 이용한 천정형 에어컨 4-way 판넬의 공정 최적화에 관한 연구

  • Kim, Joo-Kwon (PRI, LG Electronics lnc.) ;
  • Lee, Jung-Hee (Department of Mechanical Engineering, Pukyoung National UNIV.) ;
  • Kim, Jong-Sun (Molds and Dies Technology Group, Korea Institute of Industrial Technology) ;
  • Lee, Jun-Han (Molds and Dies Technology Group, Korea Institute of Industrial Technology) ;
  • Kwak, Jae-Seob (Department of Mechanical Engineering, Pukyoung National UNIV.)
  • 김주권 ((주)LG 전자 생산기술원) ;
  • 이정희 (부경대학교 기계공학과) ;
  • 김종선 (한국생산기술연구원 금형기술그룹) ;
  • 이준한 (한국생산기술연구원 금형기술그룹) ;
  • 곽재섭 (부경대학교 기계공학과)
  • Received : 2018.07.20
  • Accepted : 2018.10.10
  • Published : 2018.12.31
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Abstract

Deflected 4-way panels of ceiling air conditioners produced by injection molding process have caused dew condensation at the edge of products. In order to prevent this drawback with reducing weight and deformation, this study proposed renovated process adopting microcellular foaming. According to results from 2-sample t-test and analysis of variance(ANOVA), the critical factors affecting weight were melt temperature and injection speed. In addition, the vital effects on deformation were structure at the edge, mold temperature and cooling time. Optimal conditions of these parameters were derived by regressive analysis with CAE and response surface method(RSM), and then applied to an actual design and process stage to analyze performance. As a results, it clearly showed that new process improved process capability as well as reduced both weight and deformation by 18.8% and 71.9% respectively compared to the conventional method.

Keywords

References

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  1. Dimensional Optimization of Electric Component in Ultra Thin-wall Injection Molding by Using Moldflow Simulation vol.19, pp.7, 2018, https://doi.org/10.14775/ksmpe.2020.19.07.001