Ultrasonic transducer with a flange for mounting on an ultrasonic welding device, in particular on a wire bonder
US6135339A · kind A · utility
20Cited by
54References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3011
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.