Electrical multi-spot resistance welding machine
US4149059A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1977 |
| Grant date | Apr 10, 1979 |
| Priority date | — |
| Expiry date | Jul 27, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F27/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to electrical multi-spot resistance welding machine for the production of welded bar gratings produced by welding cross-bars into the narrow side of parallel, upright flat bars. Such a machine has a pressure-beam which is guided vertically on a frame for lowering onto and raising away from the bars to be welded. Two rows of electrodes are disposed on the pressure beam, the rows being transverse to the feed path of the flat bars and the electrodes in the two rows being aligned in the feed direction of the flat bars and the electrodes of each aligned pair thus formed are connected to the secondary terminals of opposite polarity of a respective welding transformer. The electrodes are mounted in the pressure beam such that the electrodes of each pair aligned in the feed direction of the flat bars, are at least partially independently slidable vertically within the beam against a biasing force, the pressure beam and the welding transformers being mounted in a single unit for lowering and raising together. Short flexible supply leads connect the electrodes with the transformers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.