Abstract

It is well known that the family-mold has an advantage to reduce the cost for production and mold. However, defects are frequently occurred by over packing the smaller volume cavity during molding, especially when the family-mold has a volumetric difference between two cavities. In this study, the cavity-filling imbalance was confirmed by the temperature and the pressure sensors, and a variable-runner system was developed for balancing the cavity-filling. Experiments of balancing the cavity filling was carried out in the family-mold with the variable-runner system, and balancing the cavity-filling was confirmed by changing the cross-sectional area of a runner in the variable-runner system with the temperature and pressure sensors. The influence of the injection speed to the balancing-capability of the variable-runner system was also examined in the experiment.

주제어

#Family Mold   #Filling Balance   #Variable Runner   #Cavity Pressure Sensor   #Cavity Temperature Sensor   #Closed Loop Control   #Injection Speed  

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참고문헌 (13)

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이 논문을 인용한 문헌 (3)

1. Kang, Min-A ; Lyu, Min-Young 2008. "Investigation of the Filling Unbalance and Dimensional Variations in Multi-Cavity Injection Molded Parts" 폴리머 = Polymer (Korea), 32(6): 501~508  원문보기 상세보기
2. Park, Seo-Ri ; Kim, Ji-Hyun ; Lyu, Min-Young 2009. "A Novel Runner Design for Flow Balance of Cavities in Multi-Cavity Injection Molding" 폴리머 = Polymer (Korea), 33(6): 561~568  원문보기 상세보기
3. Jeon, Kang-Il ; Noh, Seung-Kyu ; Kim, Dong-Hak 2011. "A study on the runner system for filling balance in multi-cavity injection molds" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 12(4): 1581~1588  원문보기 상세보기