Sliding contact roller head
US5159168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Mar 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/3045
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A roller head (10) for a resistance seam welding machine has an internally located sliding contact current transmission device (24) between stator 12) and rotor (14) and is composed of a pair of circular ring-shaped discs (26, 26') which extend radially between rotor and stator, are fastened to the rotor on their outer circumferences, carry axial sliding contact rings (32,32') on their inner circumferences, and are flexible designed in their intermediate parts (28,28') between inner and outer circumferences. These sliding contact discs (26,26') are composed of a copper mesh, to which the axial sliding contact rings (32,32') are fastened. Thin-walled metallic diaphragms can also be used instead of the copper mesh. The roller head (10) can transmit high welding currents. As a result of the flexible design of the sliding contact discs (26,26') the contact presssure, which is created by a stack of plate springs (40), remains constant even with external mechanical influences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.