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提出并研究了利用两个纵向振动系统对塑料进行超声焊接的方法。 这种系统的焊接范围可以比单振动系统的普通超声焊接方法增大一倍。每个振动系统所需的焊接振动速度大约为原来的一半,因此所需功率就约为原来的四分之一。焊接对样品的损伤也比较小。 在对厚的和大的样品进行传输焊接的情况下,上下振动系统的频率相同时,焊样上的振动分布可以通过调整上下焊头之间的振动相位差加以改变。改变振动相位差,就可以使焊接的位置处于振动应力最大的地方。这种使用两个振动系统的焊接方法具有多种有用的特点,对塑料焊接最为有效。
Proposed and studied the use of two longitudinal vibration system plastic ultrasonic welding method. The system’s welding range can double the size of conventional ultrasonic welding systems for single-vibration systems. The required welding vibration speed per vibration system is about half the original, so the required power is about one quarter of the original. Welding damage to the sample is relatively small. In the case of thick and large samples for transmission and welding, when the frequency of the upper and lower vibration system is the same, the vibration distribution on the welding specimen can be changed by adjusting the phase difference between the upper and lower welding heads. Change the vibration phase difference, you can make the welding position at the maximum vibration stress place. This method of welding using two vibration systems has many useful features that are most effective for plastic welding.