臺灣博碩士論文加值系統

本研究為頁寬式壓電噴頭高速粉床熔融3D列印機台開發的初期研究。起初先以改裝的單熱泡噴頭模組粉床熔融3D列印機台進行加熱製程的設計及開發，同時進行材料的選用及材料基本性質的分析以確立其反應機制，並透過列印的成品整理出較佳的列印策略，進而將此經驗應用於機台製程開發上。另外利用將噴頭拼裝為頁寬式模組讓噴印流程簡化達到單噴印行程(Single-Pass)，以達到高速噴印的目的。
熱塑性聚氨酯為目前鞋類製造的熱門材料，但由於其身為非結晶性材料無明確熔點的特性使其在粉床熔融3D列印製程中形貌的定義上有著難度，本研究以檢測不同區域的溫度作為基準，統整出不同溫度控制條件下列印精度與強度的差異，作為成品需求與製程參數調控的參考。
最後會進行壓電噴頭及墨水的噴印可行性測試，作為材料選用與調適的依據，並架設觀墨設備觀測噴印時墨滴的狀態，以判斷壓電波型的設計是否得宜。

This study is the early research on the development of page-wide piezoelectric printhead module high-speed sintering 3D printing machine. At first, the design and development of the heating process was carried out with a modified single thermal bubble printhead powder bed sintering 3D printing machine. At the same time, the material selection and the properties of the material were analyzed to establish the reaction mechanism and print the finished product. Organize a better printing strategy and apply this experience to machine process development. In addition, the nozzle is assembled into a page-wide module to simplify the printing process becoming single pass to achieve high speed process.
Thermoplastic polyurethane, TPU, is widely used in current footwear manufacturing industry. As is a kind of amorphous materials, TPU has no clear melting point, which makes it difficult to define the morphology in the powder bed sintering 3D printing process. In this research, detecting of temperature in different area is used to make products and then calculate the difference between dimensional accuracy and mechanical property as a reference for tuning the process parameters.
Finally, printability test of the piezoelectric printhead and ink can be carried out as the basis for material selection and adjustment, and using high speed camera to observe the droplets during printing to determine whether the design of the piezoelectric waveform is appropriate.

致謝 V
摘要 1
ABSTRACT 2
目錄 3
圖目錄 6
表目錄 10
第一章 緒論 11
1.1 前言 11
1.2 研究動機與目的 12
1.3 研究流程 13
第二章 文獻探討 14
2.1 積層製造技術 14
2.1.1 黏著劑噴塗成型 16
2.1.2 粉體熔融成型技術 17
2.2 粉末燒結原理 18
2.3 快速燒結技術 21
2.3.1 快速燒結技術介紹 21
2.3.2 HP Multi Jet Fusion (MJF)技術 25
2.4 噴墨技術 26
2.4.1 熱泡式 27
2.4.2 壓電式 28
第三章 噴頭模組應用於粉床熔融3D列印的機台設計與開發 37
3.1 熱泡噴頭的粉床式熱熔融3D列印機 37
3.2 頁寬式壓電噴頭高速粉床熔融3D列印機台 43
3.2.1 機台硬體架構設計 43
3.2.2 鋪粉機構 45
3.2.3 噴印模組 45
3.2.4 管路系統 47
3.2.5 加熱模組 47
3.2.6 控制系統及軟體設計 48
第四章 熱泡噴頭熱熔融3D列印機製程分析 53
4.1 粉體選用與材料性質測試 53
4.1.1 粉體材料 53
4.1.2 粉體材料性質分析 55
4.1.3 熔融劑墨水性質與製程原理驗證 57
4.2 熱泡噴頭粉床熱熔融3D列印機參數測試 60
4.3 尺寸精度分析 65
4.4 硬度測試 66
第五章 壓電噴頭噴印可行性分析 68
5.1 壓電式噴印墨水分析 68
5.1.1 墨水材料 68
5.1.2 壓電式噴頭噴印分析 73
5.2 壓電噴頭噴墨型態分析 76
第六章 結論與未來研究方向 81
參考文獻 83

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