臺灣博碩士論文加值系統

射吹拉成形是典型地製作保特(PET)瓶的方式之一。為了要製作不同大小或型號的寶特瓶，使其在製作程序中能達到較為理想的瓶坯表面溫度分布，我們需要調整射吹拉成型機上各個紅外線加熱燈管的操作參數以達到較佳的加熱條件。為達此目的，本研究提供了三個方式解決問題。第一個是使用適應性有限體積法尋找適當的燈管操作參數，以達較佳的加熱方式。第二個是找到適當的量測溫度方式以確認上述操作方式的正確性。第三個是配合改善製造機械的散熱系統，使吹瓶機能以較為節省能源的操作。本文計算部分是藉由軟體COMSOL 5.2a及Ansys 15所完成，實驗部分則藉由紅外線攝像儀所完成，理論與實驗結果是一致的。

Stretch-blow molding (SBM) is one of the classical methods to produce plastic bottles made from polyethylene terephthalate (PET). To obtain a better temperature distribution on the PET surface with different types of preforms, dimensions, and lengths of PET, we need to use different numbers of lamps with different power intensity to adjust the heating conditions. This study proposes three methods for finding the number of lamps and density of lamps. The first method is an adaptive finite volume method to estimate the appropriate power intensity of the lamps that results in a good temperature distribution. The second method focuses on how to estimate and measure the temperature on a PET preform to make sure that there is a proper number of lamps and power intensity of each lamp. The third method provides a new cooling system for the SBM machine to obtain a better temperature distribution on the PET bottles. The implementation of these methods relies on the software packages COMSOL 5.2a and Ansys 15. The methods were tested using a thermal camera to measure the temperature distributions of the bottles, and the results were compared with the numerical results.

摘要............................................................................. i
Abstract ................................................................................. ii
Acknowledgements................................................................. iii
Contents..........................................................................iv
List of tables ...................................................................v
List of figures ..................................................................................vi
Nomenclatures ................................................................................ viii
I. Introduction ...................................................................................1
1.1. Motivation ...................................................................................1
1.2. History of the SBM machine ...................................................2
1.3. Thermal camera ...............................................................2
1.4. SolidWorks 2010...............................................................4
1.5. COMSOL Multiphysics 5a........................................................4
1.6. Thesis outline ...................................................................................5
II. Research method ...................................................................................6
2.1. Design model ...................................................................................6
2.2. Theory........................................................................12
III. Experiment ...................................................................................14
3.1. Estimated temperature distribution on preform surfaces........................14
3.2. Infrared heating on PET bottles by experiment and adaptive finite volume
method.............................................................................21
3.3. Research on the radiation heating and the cooling system inside the SBM
machine............................................................................25
IV. Conclusion.........................................................................42
References ........................................................................43

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