嵌入式高週波感應加熱模具之開發

Investigation on Induction Heating Mold with Embedded Coil

朱昭勳(Chao-Hsun Chu)

指導教授 ： 黃榮堂 ； 韓麗龍

國立臺北科技大學/機電學院/機電整合研究所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00535

摘要

本文針對感應加熱技術用於模具加熱作開發研究，提出一種通以高頻電流之嵌入式感應線圈進行感應加熱快速提高模穴表面溫度之裝置方法。透過嵌入式感應線圈快速加熱模溫並可於塑料合模注入階段持續加溫，解決微結構射出成型製程因流道淺窄流動阻力大而造成塑料流動性不佳之成型困難。利用本技術可達到快速加熱、控制加熱溫度等優點，進而大幅縮短生產週期、降低生產成本。
本研究主要利用ANSYS軟體模擬嵌入式感應線圈對於模具之公母模仁加熱的情形，並利用現有射出成型標準模具規格實際設計開發一組模具，同時設計出特殊線圈接頭與以電木材質之機構固定線圈於模具上配合射出成型製程開合模步驟進行升溫實驗來驗證。由設計模擬結果得知電流大小、線圈匝數及放置位置及模仁厚度等多項控制模溫參數，皆會影響模穴表面溫度高低及溫度分佈。本研究之模擬結果顯示具有良好升溫趨勢，可滿足微結構射出成型之溫度要求，証實嵌入式感應線圈能確實加熱射出成型模具，利用此方法可得到一般射出成型機台與設備製造微結構成品的可行性。

關鍵字

感應加熱 ； 射出成型 ； 微結構

並列摘要

This mold is used for heating induction heating technology for research and development. To propose a high-frequency current through the induction coil induction heating embedded rapid increase in cavity surface temperature of the device method. Rapid heating by induction coil embedded mold temperature in plastic mold injection and continued heating phase, solution microstructure injection molding process flow due to a large shallow flow resistance caused by poor flow of plastic molding difficult. Use this technology to achieve rapid heating, control the heating temperature, etc., thus greatly shortening the production cycle, reduce production costs. In this study, using ANSYS simulation software embedded induction coil for the male and female mold mold heated situation, and use existing standard mold injection molding design and develop a set of specifications of the actual mold, and design a special coil connector with bakelite material of the body to fixed coil in the mold with the injection molding process clamping steps to verify the temperature experiments. From the design simulation results that the current size, the placement of the coil turns and the thickness of mold and mold temperature control and many other parameters, all affect the level of the mold cavity surface temperature and temperature distribution. Simulation results of this study show a good warming trend, micro-structure to meet the temperature requirements of injection molding, can indeed confirm that the embedded induction coil heating injection molds.

並列關鍵字

induction heating ； injection molding ； micro-structures

參考文獻

[1] Piotr Urbanek, Adam Skorek, and Marek B. Zaremba, “Magnetic flux and temperature analysis in induction heated steel cylinder”, IEEE Transactions On Magnetics, Vol.30, No. 5, pp. 3328-3330, 1994.

[2] K. Sadeghipour, J. A. Dopkin, and K.Li, “Acomputer aided finite element/ experimental analysis of induction geating process of steel”, Computers In Industry, Vol. 28, pp. 195-205, 1995.

[3] C. Chaboudez, S. Clain, R. Glardon, D. Mari, J. Rappaz, and M. Swierkosz, “Numerical modeling in induction heating for axisymmetric geometries”, IEEE Transactions On Magnetics, Vol. 33, No. 1, pp. 739-745, 1997.

[4] Janne Nerg, Jarmo Partanen, Member, “A simplified FEM based calculation model for 3-D induction heating problems using surface impedance formulations”, IEEE Transactions On Magnetics, Vol. 37, No. 5, pp. 3719-3722, 2001.

[5] 李育芸，感應加熱應用於模具表面快速加熱之研究，私立中原大學機械工程學系碩士論文，2002。