Sealing device and method for sealing fitting element to workpiece by means of ultrasound

The invention relates to a sealing device (1) for sealing an equipping element (2) to a workpiece (3), in particular a workpiece in the form of a composite laminate, by means of ultrasonic waves, the sealing device comprises a sonotrode (5) for generating ultrasonic waves, a sealing surface (6) for transmitting the ultrasonic waves to the equipping element (2) and/or the workpiece (3), an anvil (7) opposite the sonotrode (5), and an adjusting device for adjusting the sonotrode (5) and the anvil (7) relative to each other from an open position to a closed position and back, the ultrasonic sealing device (1) has an open position for at least partially introducing the fitting element (2) and the workpiece (3) into the sealing gap (4) between the sonotrode (5) and the anvil (7), and a closed position for pressing the workpiece (3) and the fitting element (2) at least partially between the sealing surface (6) of the sonotrode (5) and the anvil (7) during ultrasonic sealing. The aim of the invention is to be able t