고정밀 플라스틱 제품 성형을 위한 다수 캐비티 사출금형 및 성형 요소기술에 관한 연구
A study on multi-cavity injection mold and molding elemental technology for plastic product of high precision tolerance
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초록
As a representative method for mass production, a multi-cavity type mold capable of simultaneously molding products of the same shape can be applied. It has the advantage of improving the productivity from several times to several tens of times, but it may cause disadvantages which is the quality deviation with each cavity. This study, therefore, has tried to increase the cavity filling balance by using a melt flipper and a flow distance control part in the runner part of the mold. Along with this, the design and manufacturing of air vents during injection molding have been verified through experimental methods to achieve a higher level of multi-cavity filling balance and dimensional accuracy.
Abstract
As a representative method for mass production, a multi-cavity type mold capable of simultaneously molding products of the same shape can be applied. It has the advantage of improving the productivity from several times to several tens of times, but it may cause disadvantages which is the quality deviation with each cavity. This study, therefore, has tried to increase the cavity filling balance by using a melt flipper and a flow distance control part in the runner part of the mold. Along with this, the design and manufacturing of air vents during injection molding have been verified through experimental methods to achieve a higher level of multi-cavity filling balance and dimensional accuracy.
참고문헌 (9)
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- 한성렬, "사출성형해석 연구를 이용한 게이트 밸런스 계산식의 검증", Design & Manufacturing, 12(3), pp.55~59 (2018), 한국금형공학회[DOI]
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- Jeong, Y. D., "A New Runner System Melt-Buffer for Filling Balance in Injection Mold", Proceeding of mold machining symposium, pp.101~107 (2008)
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- Zhang, H., "Precision replication of micro features using micro injection moulding : Process simulation and validation", Journal of Manufacturing Process, 177, pp.236~248 (2019)