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Optimizations of Air-trap Locations in the Speaker Encloser of Mobile Phone by Injection Molding Simulations  

Park, Ki-Yoon (ED&C, LTD. 기술지원부)
Park, Jong-Cheon (금오공과대학교 기계공학과)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.10, no.5, 2011 , pp. 85-90 More about this Journal
Abstract
In this paper a design procedure via computer-aided molding simulation is presented to optimize the air-trap locations in a speaker encloser of mobile phone. The molding flow simulation reveals that the race-tracking phenomenon is the dominant feature in the current mold design. In obtaining an optimal filling pattern, the local modifications of the wall thickness such as in a flow leader attachment are considered as the primary control factor, and both the gate position and the filling time become the secondary control factor. In the one-at-a-time approach, the last location to be filled in the mold cavity could be successfully moved to the extremities of the part, allowing a natural ventilation of entrapped air through the mold parting plane.
Keywords
Injection Molding Simulation; Filling Pattern Optimization; Air Traps; Race Tracking; Flow Leader;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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