Continuous motion circumferential seam welder
US4661673A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Aug 28, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/093
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for creating a circumferential seam weld in surrounding relationship to a cylindrical workpiece. The workpiece is moved continuously along a work path at a preselected velocity, and is simultaneously supported for free rotation about its longitudinal central axis. The workpiece moves into engagement with opposed surfaces defined by a pair of electrodes, one of which moves relative to the other and relative to the workpiece for causing rotation of the workpiece through approximately one-half revolution, whereby the two electrodes simultaneously form two welds which are about 180.degree. apart and which may individually extend up to a total angle of rotation of about 180.degree., or slightly in excess thereof, so that the welds overlap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.