臺灣博碩士論文加值系統

近年來，最普遍看到以及使用的東西即為塑膠製品，舉凡日常用品、3C產品、醫療用品等，都是塑膠成型的典型範疇並且廣泛地被使用在日常生活中。射出成型除符合品質與精密度的要求，更有低成本、高產能的特性，因此成為塑膠加工的重要技術。不過近期研究有關感應加熱應用於模具加熱上大多屬平面加熱，也就是加熱線圈彼此之間不會有高低差。但是實際上射出成型的產品並非都屬平面式的，大多數的產品都會有曲面或是深度不一樣的情況。對於這些產品，如果只是使用平面的加熱線圈並沒有辦法達到很好的加熱效果。
本研究的目標主要是希望透過將感應線圈改成非平面式，配合模穴的深淺進行設計，以達到高加熱效率以及高溫度均勻性。本次實驗共製作了兩組加熱線圈。第一組的加熱效果10秒由起始50oC上升至74.27 oC，升溫速率為每秒2.43oC，溫度均勻性為77.66%；第二組的加熱效果10秒由起始50oC上升至81.14oC升溫速率為每秒3.11oC，溫度均勻性為80.92%。

Plastic products were the most common things we used in recent years, like daily necessities, 3C products and medical supplies, all of above things were injection molding products and wildly used in everyday. Injection molding in addition to satisfying the requirements of quality and precision density, it had more low-cost and high-volume characteristics, so it became an important technology of plastics processing. However, recent studies on induction heating applied to the mold mostly flat, in other word, heating coils would not have the level difference to each other. Actually injection molding products were non-planar, most of products had curve or difference depth. For these cases, if only use planar heating coil, it could not achieve good heating effect.
This study was mainly designed non-planar heating coil, according to the depth of mold cavity designed heating coil in order to get high heating efficiency and high temperature uniformity. This study designed two heating coils. The first one total heating 10 seconds and temperature increased from 50oC to 74.27oC. Heating rate was 2.43oC/s and temperature uniformity was 77.66%. The second one total heating 10 seconds and temperature increased from 50oC to 81.14oC. heating rate was 3.11oC/s and temperature uniformity was 80.92%.

摘要 I
Abstract II
致謝 III
目錄 V
圖目錄 VII
表目錄 X
第一章 緒論 1
1-1 前言 1
1-2 射出成型基本介紹 2
1-2-1 射出成型流程 2
1-2-2 射出成型的問題 4
1-3 文獻回顧 6
1-4 研究動機與目的 15
1-5 文章架構 15
第二章 感應加熱的基本介紹及背景理論 16
2-1 感應加熱的介紹 16
2-2 感應加熱的原理 16
2-3 感應加熱的特性 17
2-3-1 金屬的電磁特性 17
2-3-2 金屬的熱傳特性 23
2-4 感應加熱的熱傳方式 24
2-4-1 熱傳導 24
2-4-2 熱對流 24
2-4-3 熱輻射 25
2-5 感應加熱的優點 27
第三章 第一組感應線圈實驗結果 28
3-1 實驗目的 28
3-2 感應加熱設備 30
3-3 紅外線熱影像儀與合成樹脂塗料 32
3-4 磁場集中器 35
3-5 加熱線圈設計與溫度分佈 36
3-6 溫度均勻性分析說明 38
3-7 實驗結果 39
3-7-1 改變機台前 39
3-7-2 改變機台後 42
3-7-3 結果與討論 47
第四章 第二組感應線圈實驗結果 50
4-1 實驗設備 50
4-2 加熱線圈設計與封裝 52
4-3 實驗步驟 53
4-4 實驗結果 54
4-4-1 封裝前 54
4-4-2 封裝後 55
4-4-3 新舊線圈比較實驗 57
4-5 結果與討論 59
4-5-1 新線圈封裝前後差異 59
4-5-2 舊線圈與新線圈實驗結果比較 60
4-6 射出成品結果 61
第五章 結論與未來展望 65
5-1 結論 65
5-2 未來展望 65
參考文獻 67
索引 70

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