SYSTEM AND METHOD FOR LOW INITIAL WELDING SPEED IN ULTRASONIC WELDING

The invention provides an improved ultrasonic system and method. The ultrasonic stack is moved at a low, constant (or slowly varying) speed at the initiation of the welding operation, with this speed being maintained until the predetermined condition is satisfied. In some applications, this produces a higher quality weld, such as in applications involving plastic material that softens very quickly once ultrasonic energy is imparted to the workpieces being welded, which causes the force between the workpieces to decrease rapidly. Advancing the ultrasonic stack at a low speed or slow acceleration can avoid scuffing or marking of the surface of the workpiece in contact with the ultrasonic horn, decrease audible noise produced during the welding process, and improve the consistency of weld quality in such applications compared to conventional techniques. 改进的超声波系统和方法。超声波堆在焊接操作开始时以低的恒定(或缓慢变化)的速度移动，并保持该速度直到满足预定条件。在一些应用中，这会产生更高质量的焊接，例如在涉及塑料材料的应用中，一旦超声波能量施加到被焊接的工件，该塑料材料就会非常快速地软化，这会导致工件之间的力快速地减小。与传统技术相比，在这种应用中以低速或缓慢的加速