Patent ID: 7810694
Filing Date: 2010-10-12
Classification: B06B,B23K

Abstract:
1. Sonotrode for an ultrasonic welding device and having a longitudinal axis, said sonotrode comprising: a body portion; a head portion of rectangular cross-section in a direction perpendicular to the longitudinal axis, and comprising at least one planar working surface for welding metal which is substantially parallel to the longitudinal axis, a front surface which is substantially perpendicular to the at least one working surface, and a back surface, and an intermediate tapered portion which joins the back surface to the body portion, the sonotrode transferring ultrasonic vibrations in the direction of the longitudinal axis, wherein the front surface comprises at least one reinforcement for reducing deflection of the at least one working surface, the reinforcement exhibiting a continuously changing curve protruding over the entire width of the front surface and having a maximal extension (d) of 3-25 mm over the front surface, and being shaped symmetrically with respect to a symmetry plane in which the longitudinal axis runs.