| 摘要 |
Longitudinal continuous welding device for packaging machines; wherein it comprises at least: - one supporting piece (1) for the layers of material to be welded continuously, - one ultrasonic welder (2) equipped with a sonotrode (21); this sonotrode (21) and the aforementioned supporting piece (1) face each other horizontally, arranged on opposite sides of the longitudinal path of the layers of material (M) to be welded, and unable to move in the direction of longitudinal movement of the layers of material (M); - at least one positioning element (3) of the welding device in a non-operating position or in an operating position; and - at least one elastic pusher (4), which acts on the welding iron (2) and/or the supporting piece (1) to push them against the opposite sides of the layers of material (M) to be welded continuously. |
