| 摘要 |
PROBLEM TO BE SOLVED: To weld flatly stacked processing pieces, pref., a layer of tubular parts in the bag making industry by the welding part having a predetermined contour by an ultrasonic welding method. SOLUTION: Even when flatly stacked processing pieces 11 tend to bend and expand, the flatly stacked processing pieces are surrounded by a continuos belt 9 or strap circulating on drive rollers 10 by warping sonotrodes 1, 2 in order to very well weld the processing pieces mutually. The transfer running part of the belt passing the active surfaces of the sonotrodes presses the processing pieces ready to be welded to contour rollers 5, 6. |
