內部式感應加熱應用於模具快速加熱之研究

Investigation on Rapid Heating Injection Mold by Using Inner Induction Heating

林育增(Yu-Tseng Lin)

指導教授 ： 陳夏宗

中原大學/工學院/機械工程研究所/碩士(2009年)

https://doi.org/10.6840/cycu200901306

摘要

近年來，模具快速加熱技術不斷的開發出來以配合各種不同需求的產品或提高產品品質。其中，利用可快速加熱模具的加熱設備，使模具能快速升溫與冷卻，以增加塑料充填時的流動性、微結構的複製性或縮短成型週期，並達到射出時提高產品品質的目的。基於此背景，在不改變製程並增加成本的負擔條件下，業界不斷的發展新的快速加熱設備來因應市場對於高品質塑膠產品的需求。
本研究是利用模溫控制機與內部感應加熱對於基礎模板進行加熱實驗效率比較，藉由改變不同的模板厚度分別為15mm和20mm、不同的線圈與模板距離分別為3mm和6mm與9mm、不同的開關水型式分別為開水和關水與排水進行實驗，並以分析軟體ANSYS®作3D基礎平面模板溫度場分析與熱傳分析驗證，以驗證分析之可行性。
研究結果顯示，使用15mm模板厚度可以有效提升加熱速度。內部感應加熱搭配關水模式的加熱結果，模板15mm升溫速度1.75℃/s；模板20mm升溫速度0.25℃/s。在三種不同型式的開關水中可得到其加熱速度為開水升溫速度1.375℃/s；關水升溫速度1.45℃/s；排水升溫速度1.72℃/s，由此結果可得排水的加熱效益遠高於開水的加熱效益25％，故可明確得知以排水的模式進行加熱可有效提升加熱速度。ANSYS®應用於3D基礎平面模板溫度場模擬分析與實驗結果之趨勢相當接近。
在實驗與分析中，成功的將感應線圈埋入模具內部進行基礎模板測試，並證明其可行性，成功建立內部感應加熱3D磁-熱耦合模擬分析技術。

關鍵字

變溫技術 ； 內部感應加熱 ； 3D磁-熱耦合模擬

並列摘要

In the recent years, mold rapid heating technologies have been developed all the time. In order to make the mobility of plastic and the replication of micro-structure higher or shorten cycle time, the objective of rapid heating technologies is to raise the mold temperature higher and cool down quickly. Based on this technology, many industries continue to develop new rapid heating technology for increasing the production quality.
This Experiment would use the mold temperature control and inner induction heating with mold plate for the mold base for heating experiments efficiency by changing the mold plate of different thickness respectively are 15mm and 20mm, different coil and the mold plate respectively are 3mm and 6mm and 9mm, different types of switches the water respectively are open water and close water and no water experiments. Simulation technology was also developed by integration of both thermal and electromagnetic analysis modules of ANSYS.
The results showed that using 15mm thickness can enhance effectively the template heating rate. Under template of 15mm thickness, inner induction heating mode with the close water can get 1.75oC/s of heating rate; with template of 20mm thickness is 0.25oC /s of heating rate. In three different types of water control are available to heat the open water at the speed of heating 1.375 oC /s; related water heating rate 1.45 oC /s; drainage heating rate 1.72 oC/s, This results show that the heating efficiency of the drainage water is much higher than 25% of the heating efficiency, it can be clearly informed that the drainage in the model can effectively upgrade the heating rate of heating. ANSYS used in 3D planar template based on analysis of temperature field simulation and experimental results are quite close to the trend.
In the experiment and analysis, the success of the induction coil embedded within the mold based on the template test, and already prove its feasibility, the success of the establishment of an inner 3D magnetic induction heating - thermal coupling simulation analysis techniques.

並列關鍵字

thermal and electromagnetic analysis ； inner induction heating ； Dynamic mold temperature control

參考文獻

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