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AssigneeFronius International GmbH
InventorsWolfgang GROSSAUER, Christian RESCH
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A plug part releasably connects a liquid-cooled welding torch to a jack part arranged on a hose package, and a connecting device releasably connects a liquid-cooled welding torch to a hose package. In order to provide a connecting device which is suitable for high welding currents and use with hollow shaft robots, each welding current line on the plug part is arranged around a cooling duct, at least in the region of the front face, and the contact area of each welding current line is arranged axially offset from the orifices of the cooling ducts. On the jack part, each welding current line is arranged around a cooling duct, at least in the region of the end piece, and the contact area of each welding current line is arranged axially offset from the orifices of the cooling ducts.
A plug part (4) for releasably connecting a liquid-cooled welding torch (2) to a jack part (5) arranged on a hose package (3), having a front face (9), a cylindrical pipe element (8), at least two axially extending welding wire ducts (10), at least two cooling ducts (11) each having an orifice (19) and at least two welding current lines (12) each having a contact area (17), wherein each welding current line (12) is arranged around a cooling duct (11), at least in the region of the front face (9), and the contact area (17) of each welding current line (12) is arranged axially offset from the orifices (19) of the cooling ducts (11).
A jack part (5) for releasably connecting a hose package (3) to a liquid-cooled welding torch (2), having a cylindrical end piece (21), at least two axially extending welding wire ducts (41), at least two cooling ducts (22) each having an orifice (45) and at least two welding current lines (20) each having a contact area (18), wherein each welding current line (20) is arranged around a cooling duct (22), at least in the region of the end piece (21), and the contact area (18) of each welding current line (20) is arranged axially offset from the orifices (45) of the cooling ducts (22).
Dependencies are inferred from the claim text.