Abstract: Apparatus and method for controlling blanket gas flow in an electrical welding facility, wherein welding is performed using a welding electrode in electrical connection with a welding machine unit. The apparatus includes an electric measuring device having a current sensor for determining the magnitude of an electrical welding current carried in a circuit incorporating the welding electrode and having a current sensor output adapted to provide a I signal indicating the current magnitude, and a voltage sensor for determining the magnitude of electrical voltage applied to the welding electrode and having a voltage sensor output for providing a U signal indicating the voltage magnitude, and a control device having inputs connected to the current sensor output and the voltage sensor output, respectively, and a control signal output for providing a control signal to a blanket gas flow controller.

Abstract: The present invention relates to a method for universally controlling the advancement of the wear-away wire electrode (3) of welding and/or soldering systems, wherein the wire electrode (3) is taken from a wire supply (2) and fed to a welding head (8) from the wire supply (2) through a protective tube (1), wherein the wire electrode (3) is both advanced by means of a push drive (4) and pulled by means of a pull drive (5), which are preferably arranged in the region of the respective ends of the protective tube (1) that are actuated in keeping with a required advancement speed of the wire electrode (3). The pull drive is controlled in accordance with the actuating signals for the push drive.

Abstract: The invention relates to a device (10) for cleaning the gas nozzle (12) of a welding torch (14) and for spraying the gas nozzle (12) or a welding wire located in the gas nozzle (12). The inventive device comprises a clamping/holding device (16) for the gas nozzle (12), a cleaning device (18) for mechanically removing welding residues from the gas nozzle (12), wherein the cleaning device (18) can be moved in the direction of a first axis (20) towards the clamping/holding device (16) or away from the latter. The device also comprises a spraying device (22) for applying an anti-stick medium. The spraying device (22) can be moved in the direction of a second axis (24) that is arranged in a substantially transversal manner with respect to a first axis (20) and relative to the clamping/holding device (16). Preferably, the spraying device (22) is mechanically coupled to a cutting device (44) for the welding wire.

Abstract: The invention relates to a toolholder (10) for coupling a welding torch to an industrial robot (14), comprising a first fixing device (16) for fixing the welding torch (12) to the toolholder (10) and comprising a second fixing device (18) for fixing the toolholder (10) to the industrial robot (14). The first and second fixing devices (16, 18) can be displaced or repositioned with regard to one another counter to the action of spring elements (22, 24). The toolholder also comprises a protective circuit (26) for deactivating the welding torch (12) when predetermined displacements or repositionings are exceeded. A component (28) connected to the first fixing device (16) can be repositioned in the Z-direction (30) (toolholder longitudinal axis) and can be displaced in the X-direction and/or Y-direction (32, 34) with regard to the second fixing device (18).

Abstract: The invention relates to a stream nozzle (13) for an inert gas welding torch (B). The inventive nozzle is provided with a coating (S) that adheres to at least a part of the surface of said nozzle in a material fit and consists of silver, especially galvanically mounted contact silver.

Abstract: The invention relates to a burner head (9) of an electric arc welding or cutting head, with preferably a melting wire electrode, having a contact nozzle (1) and a spring chuck (2) for releasably holding the contact nozzle (1) on the burner head (9). Both of the contact nozzle and the spring chuck (2) have corresponding means to bring about positive locking between the contact nozzle (1) and the spring chuck in the contact nozzle (1) that is supported on the burner head (9).

Abstract: The invention relates to a contact tip for a welding or cutting torch which includes at least one internal opening for guiding and engaging at least one welding electrode, wherein the internal opening is produced by deep drilling in a bar-shaped semi-finished product, such as a solid material. The use of drawn semi-finished products can thus be eliminated, thereby widening the range of material selection and reducing the cost of the semi-finished product.