氣體輔助加熱搭配模具設計應用於模具表面加熱效益改善之研究

Study of Gas-Assisted Heating Associated with Mold Design Applied to Improve the Heating Efficiency on Mold Surface

楊哲瑋(Che-Wei Yang)

指導教授 ： 陳夏宗

中原大學/工學院/機械工程學系/碩士(2008年)

https://doi.org/10.6840/cycu200800396

摘要

隨著科技進步，消費者在3C產品要求上不僅僅在功能性，甚至產品外觀也決定是否購買的主要因素。大部份3C產品皆是由射出成型製程所生產，為了在生產過程中使產品有較佳表面品質、外觀複寫性下，模溫控制是最直接而且花費成本低廉的方法之一；傳統式的模溫技術，若要有效的提升溫度，必會增加週期時間，動態表面模溫技術由於擁有模具表面瞬間加熱、以及快速冷卻的優勢，目前已成為新興崛起技術。
本研究是將空氣對模具表面進行表面加熱升溫。主要以每秒20組的間隔擷取溫度變化數據，以求實際加熱溫度效果，首先改變氣體流量、加熱時間、氣體溫度驗證對加熱效果影響。接著改善進氣、出氣口之管徑幾何形狀進而改善加熱均勻性，再搭配氧化鋯鍍層滯熱對加熱效果作改善。實驗結果比較動態模溫控制與模溫機加熱效率，並利用CFD-ACE模擬分析軟體對結果進行驗證。
實驗結果發現，利用氣體加熱時，最佳之效益可在加熱四秒中達到每秒約33℃(漸擴式氣道配合鍍層滯熱及熱阻隔層)，加熱速度非常快，在分析結果中，結果與實驗誤差不大，因此確定了本論文之貢獻性及可行性。

關鍵字

模具表面加熱 ； 氣體加熱

並列摘要

With the rapid development technology at the moment, the needs for 3C products are also increasingly, especially the appearance of products, which is the key for consumers to decidedly whether or not to purchase it. During manufactory products are mainly produced by injection molding, in order to get better products. mold temperature control is one of the most direct and it is cheap. Generally, it traditional mold temperature technology is to effectively raise temperature, then cycle time will be increased a lot. Therefore, in the recent years, dynamic mold surface temperature technology has become a new found technology.
In this study, It would mainly talk about heating the mold surface use the air and discuss about the heating benefit. At the beginning, find the data according to temperature-changing, which retrieving by 20 intervals every second, for accurate temperature. Then, making basic experiment of gas heating, and change the shape to make the uniformity of heating better, when the uniformity of heating has improvement of , I would focus on the modification of coating to improve the heating benefit. Finally, makes the comparison with traditional mold temperature control in order to confirm the result of heating benefit. After the experiment, using CFD-ACE analysis to test and verity which confirm the study.
After experiment, the best benefit could be raise 33 ℃ every second. The speed of heating is special fast. In the analytic result that only has a little error with experiment. Therefore, it conformable that contributions and practicability of the study.

並列關鍵字

Gas-assisted heating ； Mold surface heating

參考文獻

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