| 摘要 |
Apparatus for welding a wire mesh of crossing longitudinal and transverse wires, with a rotatable upper and lower electrode configured as a disk-like polygon, at least the upper electrode (2) being movable upwardly and downwardly and the upper and lower electrodes (2; 6) being rotatable to their working position in which a polygon surface extends parallel to the longitudinal wires, whereby the upper electrode and the lower electrode are provided at each polygon surface (8) with an internal distribution channel (13; 15) for cleaning air, preferably pressurized air, each distribution channel having at least one blow-out opening (14, 14'; 16, 16') terminating in the center on the polygonal surface (8) and a distributor (3, 3') for the cleaning air being associated with each of the upper electrode and the lower electrode, the distributors being each provided with a connector (11) for feeding cleaning air and with internally disposed air channels (12) connected to the connector and to the distribution channels of the upper and lower electrodes disposed in a working position.
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