Ultrasonic welding apparatus
US6523732B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Oct 10, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/8322
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for ultrasonically welding workpieces that reduces sonotrode adhesion during the ultrasonic welding process. The sonotrode tip has a specific surface configuration, including a curvilinear shaped outer surface combined with a plurality of grooves and lands. Due to the curvilinear surface, the depth of the grooves gradually decreases near the outer edge or periphery of a contact surface of the sonotrode tip. Further, such a groove and land combination also provides a sharp edge or corner that reduces sliding of the tip on the workpiece and correspondingly reduces sticking. In addition, various types of coatings or inserts may also be used to reduce sticking of the sonotrode tip to the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.