다수 캐비티를 갖는 핫러너 금형에서의 균형충전을 위한 자동제어시스템
A Closed-loop-control System for Filling Balance in the Hot Runner Mold with Multi-Cavities
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초록
For mass production of plastics, injection molds have multi-cavities. However, filling imbalance between cavity to cavity always has occurred in multi-cavities mold, and this has caused low quality of plastics part. In this study, the closed-loop-control system which can control temperature of hot manifold and nozzle in hot runner mold for filling balance has been suggested, and a series of experiment about difference of filling time and weight in cavity-to-cavity was conducted. As a result of using closed-loop-control system, a remarkable improvement in reducing filling imbalance was confirmed.
Abstract
For mass production of plastics, injection molds have multi-cavities. However, filling imbalance between cavity to cavity always has occurred in multi-cavities mold, and this has caused low quality of plastics part. In this study, the closed-loop-control system which can control temperature of hot manifold and nozzle in hot runner mold for filling balance has been suggested, and a series of experiment about difference of filling time and weight in cavity-to-cavity was conducted. As a result of using closed-loop-control system, a remarkable improvement in reducing filling imbalance was confirmed.
참고문헌 (4)
- Controlling Balanced Molding Through New Hot Runner Manifold Designs, "J. P. Beaumont", ANTEC, 932~936 (2001)
- Christopher W, White, "Decelopment of Filling Imbalance in Hot Runner Mold", ANTEC 99, pp.3672~3676 (1999)
- John P. Beaumont, "Mold Filling Imbalances in Geometrically Balanced Runner Systems", Journal of Injection Molding Technology, 1(3), pp.133~143 (1997)