Ultrasonic transducer with a flange for mounting on an ultrasonic welding device, in particular on a wire bonder
AssigneeEsec AG
InventorLorenzo Parrini
Life of this patent
Estimating the term…
Abstract
The horn of an ultrasonic transducer is applied with ultrasonic waves from an ultrasonic converter in such a way that standing ultrasonic waves develop in the lengthwise direction of the horn. A flange is arranged on the horn at the location of a node of the ultrasonic waves. The length of the flange is so aptly dimensioned that standing ultrasonic waves develop in the flange, when it can freely oscillate, which also have nodes. Drill holes are attached in this node so that the ultrasonic transducer is attachable to an ultrasonic welding device, in particular a wire bonder, by means of screws.
Claims11
An ultrasonic transducer comprising a horn, a flange and an ultrasonic converter which excites the horn so that standing ultrasonic waves develop along a longitudinal direction of the horn and within the flange, the flange being arranged on the horn or on the ultrasonic converter at a location corresponding to a node of the standing ultrasonic waves, the flange having a length proportioned so that the standing ultrasonic waves developing within the flange have at least one node.
Dependencies are inferred from the claim text.