Sealing device and method for sealing equipment elements to workpieces by means of ultrasound

A sealing device for sealing equipment elements to workpieces in the form of a composite laminate, by means of ultrasound, with a sonotrode for generating an ultrasound, with a sealing surface for transmitting the ultrasound to the equipment element and/or the workpiece, with an anvil opposite the sonotrode and with an adjusting device for adjusting the sonotrode and the anvil relative to one another from an open position for at least partial inserting the equipment element and the workpiece into a sealing gap between the sonotrode and the anvil into a closed position for in each case at least partially pressing the workpiece and the equipment element between the sealing surface of the sonotrode and the anvil during ultrasonic sealing and back,

• wherein at least one pair of mutually corresponding clamping means, which are vibration-decoupled with respect to the sealing surface, are provided on opposite sides of the sealing gap for clamping the workpiece in the closed position, and in that the at least one pair of mutually corresponding clamping means are provided outside the sealing surface with respect to the equipment element, as viewed in a direction along the sealing gap,
• wherein the sonotrode is provided annularly around a receptacle, the receptacle being designed to receive at least a portion of the equipment element, and
• wherein the sonotrode defines the sealing surface such that the sealing surface is located annularly around the receptacle.