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http://dx.doi.org/10.5228/KSPP.2006.15.1.047

An Experimental Study for the Filling Balance of the Family Mold  

Park H. P. (한국생산기술원 정밀금형팀, 아주대학교 기계공학과)
Cha B. S. (한국생산기술원 정밀금형팀)
Rhee B. O. (아주대학교 기계공학과)
Publication Information
Transactions of Materials Processing / v.15, no.1, 2006 , pp. 47-56 More about this Journal
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.
Keywords
Family Mold; Filling Balance; Variable Runner; Cavity Pressure Sensor; Cavity Temperature Sensor; Closed Loop Control; Injection Speed;
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