Compensation for thermal deformation on sonotrodes
AssigneeHerrmann Ultraschalltechnik GmbH & Co. KG
InventorsUlrich Vogler, Stefan Zendler
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Abstract
A sonotrode for an ultrasonic welding apparatus, having a lower portion of length u and an upper portion of length o, the upper portion and the lower portion adjacent on a longitudinal axis of the sonotrode, and the total length of the sonotrode in the direction of the longitudinal axis being u+o, the lower portion having a sealing surface oriented perpendicular to the longitudinal axis, the sealing surface contacting a material to be processed. The lower portion has a slot, wherein the slot extends from the sealing surface to a side of the lower portion opposing the sealing surface, such that the lower portion of the sonotrode is divided into a plurality of segments which lie adjacent each other in a direction perpendicular to the longitudinal axis.
Claims19
A sonotrode for an ultrasonic welding apparatus, the sonostrode comprising:
- a lower portion of length u and an upper portion of length o,
- the upper portion and the lower portion being arranged adjacent to each other on a longitudinal axis of the sonotrode, and a total length of the sonotrode in a direction of the longitudinal axis being u+o,
- the lower portion having a sealing surface oriented perpendicular to the longitudinal axis,
- the sealing surface configured to contact with a material to be processed,
- wherein the lower portion has a slot,
- wherein the slot extends from the sealing surface to a side of the lower portion opposing the sealing surface, such that the lower portion of the sonotrode is divided into a plurality of segments which lie adjacent to each other in a direction perpendicular to the longitudinal axis, the slot having two slot walls, and a spacing between the two slot walls tapering in the direction of the sealing surface.
Dependencies are inferred from the claim text.