臺灣博碩士論文加值系統

射出成型產品的日趨輕薄短小，使得工業界對射出機在薄殼射出的能力要求愈來愈高，而要使薄殼順利成型，高射速是必要且必然的發展方向之一。
本論文針對高射速射出機的射出油壓伺服系統之架構與設計技術進行探討，本研究主要使用一比例伺服閥於所架設的油壓系統中，控制油壓缸的前進速度；同時加裝一蓄壓器來提供足夠的油壓流量並維持系統的穩定；再於油壓缸末端加入負載，使其模擬射出成型時螺桿遇到的熔膠阻力。藉著這些元件的組合控制，並透過由LabVIEW 軟體撰寫的人機介面監控裝置，來研究、瞭解影響油壓缸前進速度的原因，做為發展高速射出機的設計參考。
本研究並以HyPneu 軟體來模擬驗證實驗的結果並做比較，以確保系統設計的正確性。並由實驗結果來驗證比例伺服閥於射出單元高速前進時的動作特性，基本上模擬能夠大致反應實驗之結果。

3C thin-wall products require to be molded by a high-speed injection molding machines.
In this study, we the structure and design of hydraulic proportional-servo valve system in a high-speed injection molding is investigated. The proportional-servo valve was used to build hydraulic platform system. The system can actuate hydraulic forward speed and provide enough flow rate to keep up system stable under the aid of accumulation with and without loading. The human interface was also developed using LabVIEW.
HyPneu simulation software used to simulate the system function and compare with experimental data. According to experimental data, we know that the reaction characteristic of proportional-servo valve that used in injection unit will influence the high-speed injection characteristic. Simulation shows well coincidence with measurement.

中文摘要...................... ............Ⅰ
英文摘要...................................Ⅱ
誌謝........................................Ⅲ
目錄........................................Ⅳ
表目錄......................................Ⅵ
圖目錄......................................Ⅶ
第一章 緒論..................................1
1-1 研究動機與目的...........................1
1-2 發展現況.................................2
1-3 目標及方法...............................2
1-4 本文架構.................................3
第二章 含蓄壓器及伺服閥之液壓缸系統架構......5
2-1 液壓系統設計分析與模擬...................5
2-2液壓系統設備..............................6
2-2-1 比例伺服閥.............................6
2-2-2 蓄壓器.................................7
2-2-3 油壓缸.................................7
2-2-4 過濾器.................................8
2-2-5 幫浦...................................8
2-3 負載.....................................8
2-4 感測元件.................................9
2-5 控制器與訊號之處理.......................9
第三章 油壓系統之數學模式...................19
3-1 蓄壓器..................................19
3-2 比例伺服閥..............................21
3-3 含蓄壓器之油壓伺服系統之數學模式........22
第四章 油路軟體分析.........................26
4-1 HyPneu介紹..............................26
4-2 元件選用及設定..........................27
第五章 實驗規劃及結果討論...................32
5-1比例伺服閥反應曲線影響...................32
5-2蓄壓器對速度曲線之影響...................33
5-3壓差對速度曲線之影響.....................33
5-3-1 系統壓改變對系統的影響................34
5-3-2 有無負載對系統的影響..................34
5-4 實驗與模擬比較..........................35
5-5 不同輸入命令對速度的影響................36
5-6 實驗結果討論............................36
第六章 結論與未來發展方向...................50
6-1 結論....................................50
6-2 未來發展方向............................51
參考文獻....................................52
作者簡歷....................................54

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