Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Formation of Ejector-Pin Hollowness in Injection Molding

사출성형에서 밀핀 흔적의 형성에 관한 연구

  • 황금종 (전북대학교 기계항공시스템공학부 대학원) ;
  • 이희관 (전북대학교 자동차부품·금형 기술혁신센터) ;
  • 양균의 (전북대학교 기계항공시스템공학부, 자동차부품·금형 기술혁신센터)
  • Published : 2002.06.01
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Abstract

This paper presents formation of ejector-pin hollowness in injection molding. Injection molding process is widely used in production of plastic part for good dimensional accuracy and high productivity. However, the injection molding leaves ejector-pin hollowness on pal, which causes bad part surface and quality. Dimensions and profiles of ejector-pin hollowness are measured for formation or ejector-pin hollowness. The formation of ejector-pin hollowness is traced with dimensions and profiles of ejector-pin hollowness. The compression force and moment cause ejector-pin to form hollowness on part surface.

Keywords

References

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