Sliding contact roller head

Details Sliding contact roller head Sliding contact roller head

B - Operations, Transporting

23

K

327/88

B23K 11/06 (2006.01) B23K 11/30 (2006.01)

Patent

CA 2037840

Described is a roller head (10) for a resistance seam welding machine, which has an internally located sliding contact current transmission device (24) between stator (12) and rotor (14), which 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 flexibly 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 pressure, which is created by a stack of plate springs (40), remains constant even with external mechanical influences.

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