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A Study on The Optimum Design of Multi-Cavity Molding Parts Using The Runner Balance Algorithm  

박균명 (한국생산기술연구원 정밀금형팀)
김청균 (홍익대학교 기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.11, 2003 , pp. 41-46 More about this Journal
Abstract
The objective of this paper is to present a methodology for automatically balancing multi-cavity injection molds with the aid of flow simulation. After the runner and cavity layout has been designed, the methodology adjusts runner and gate sizes iteratively based on the outputs of flow analysis. This methodology also ensures that the runner sizes in the final design are machinable. To illustrate this methodology, an example is used wherein a 3-cavity mold is modeled and filling of all the cavities at the same time is achieved. Based on the proposed methodology, a multicavity mold with identical cavities is balanced to minimize overall unfilled volume among various cavities at discrete time steps of the molding cycle. The example indicates that the described methodology can be used effectively to balance runner systems for multi-cavity molds.
Keywords
Flow Simulation; Injection Molding; Multi-Cavity; Runner Balance;
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