Method for contactless laser welding and apparatus
US8829388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Oct 3, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/244
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for contactless laser welding of a plurality of sheets of material stacked upon one another includes simultaneously delivering a laser beam and a stream of fluid through a laser head and further through an end cap which is removably mounted to the laser head. The end cap is configured with a stationary cylinder, which is coupled to the laser head, and a piston movable relative the cylinder. The piston moves in response to a pressure differential generated by the fluid in chambers above and below the piston. Once the pressure equilibrium is reached between the chambers, the pressure in the chamber below the piston is sufficient to reliably press the sheets of material against one another during a laser welding operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.