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http://dx.doi.org/10.3795/KSME-A.2008.32.6.481

Injection Molding for a Ultra Thin-Wall Part using Induction Heating  

Park, Keun (서울산업대학교 기계설계.자동화공학부)
Choi, Sun (서울산업대학교 대학원 기계설계.자동화공학부)
Lee, Se-Jik (서울산업대학교 대학원 기계설계.자동화공학부)
Kim, Young-Seog (서울산업대학교 기계설계.자동화공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.6, 2008 , pp. 481-487 More about this Journal
Abstract
Rapid mold heating has been recent issue to enable the injection molding of thin-walled parts or micro/nano structures. Induction heating is an efficient way to heat material by means of an electric current that is caused to flow through the material or its container by electromagnetic induction. It has various applications such as heat treatment, brazing, welding, melting, and mold heating. The present study covers an experimental investigation of induction heating in order to rapidly raise the mold temperature. It is observed that the mold surface temperature is raised up to $200^{\circ}C$ in 2 seconds. This induction heating is applied to injection molding of a flexspline for a plastic harmonic drive, which has difficulty in cavity filling because its minimum thickness is only 0.35 mm. The induction heating is then successfully implemented on this ultra-thin wall molding by raising the mold surface temperature around the glass-transition temperature of the molding material.
Keywords
Induction Heating; Eddy Current; Injection Molding; Thin Wall Molding; Flexspline;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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