超音波輔助熔接技術研發及加工參數之研究

Research and Development of Ultrasonic-Welding and Its Processing Parameters

張智翔(Jhih-Siang Jhang)

指導教授 ： 蘇親儒 ； 許坤明

國立虎尾科技大學/工程學院/創意工程與精密科技研究所/碩士(2011年)

https://doi.org/10.6827/NFU.2011.00047

摘要

本研究主要針對超音波輔助熔接方法進行分析探討，由於塑膠特性的限制，具有相當複雜形狀塑膠製品不能一次射出成型，這就需要黏接，而塑料黏接方式沿用多年的熱接合技術效率低又相當落後，且黏接劑還有一定之毒性，引起環境污染等問題。傳統之黏接方法已不能適用現代塑膠工業的發展需要，於是一種新穎的超音波塑膠熔接技術以其高效率、優質、美觀、節能等優越性脫穎而出。超音波塑膠熔接機在熔接塑料製品時，既不用添加任何黏接劑、填料或溶劑，也不消耗大量熱源，具有操作簡便、熔接速度快、熔接強度高、生產效率高等優點。因此，超音波熔接技術越來越廣泛地獲得應用。
本研究主是利用超音波熔接對塑膠聚丙烯(Polypropylene)熔接後之結果探討，本研究以15kHz和20kHz熔接機做比較。在超音波熔接效率，重點在於聲波焊頭之設計，聲波焊頭之優劣將會影響到熔接效果，因此本研究使用ANSYS有限元素分析之軟體，進行熔接之聲波焊頭分析與設計。再使用田口方法，求得15kHz和20kHz熔接機影響控制因子，以調整過後之因子做實驗驗證，再以田口法中之變異數分析找出各實驗因子之貢獻度。
本研究還利用工具光學式顯微鏡和拉伸試驗機，在不同熔接參數條件下，研究超音波熔接後之影響，並進行熔接物拉力試驗。

關鍵字

超音波熔接 ； 聲波焊頭 ； ANSYS ； 田口方法 ； 變異數分析

並列摘要

This study discussed the ultrasound-assisted welding method. Due to the constrictions of the plastic characters, the plastic products with complex shapes could not be injection molded at one time, thus, adhesion was required. However, since the hot junction technology applied in the plastic adhesion is inefficient, and the adhesive is toxic, which may cause environmental pollution, the traditional adhesion method is unable to adapt to the development need of the modern plastics industry, thus, a new kind of ultrasonic plastic welding technology has been proposed. It has the advantages of high efficiency, high quality, attractive design, and energy saving. When plastic products welded by the ultrasound plastic welding machine, it does not require adhesives, stuffing materials, or solvents, and consumes low energy. This technology is easy and simple to use, with high welding speed, welding strength and production efficiency. Therefore, the ultrasound-assisted welding technology has been applied widely.
This study discussed the results of polypropylene welded by ultrasound welding technology, and compared the welding machines with the frequencies of 15 kHz and 20 kHz. The key of the ultrasound welding efficiency is the design of the sound wave welding head, which may affect the welding effect. This study used ANSYS finite element analysis software to analyze and design the sound wave welding head, and applied Taguchi method to determine the impact and control factors of the welding machines with the frequencies of 15 kHz and 20 kHz. The factors after adjustment were used for experimental verification, and the contribution degrees of all experimental factors were determined by the variance analysis in the Taguchi method.
The tools such as optical microscope and tensile testing machine were used in to discuss the effect after ultrasound welding, and carry out the tensile experiment of the welding materials under different welding parameters.

並列關鍵字

ultrasound welding ； sound wave welding head ； ANSYS ； Taguchi method ； variance analysis

參考文獻

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