WELDING WIRE FEEDING DEVICE AND WELDING EQUIPMENT

PROBLEM TO BE SOLVED: To provide a welding wire feeding device and welding equipment that stably feed a wire at the beginning of welding and during the welding and that prevent inertia rotation of a spool at the end of the welding. SOLUTION: An electromagnet 7 is fixed to the flange 21 of a fixed shaft 2 which is fixed to the supporting member 1 of the welding wire feeding device. A detent pin 31 is provided in the flange 33 of a rotary shaft 3 opposite to the flange of the fixed shaft 2, the spool 13 of a welding wire is mounted integrally rotatably on the rotary shaft 3. A magnetic material 8 is attached to the flange 33 of the rotary shaft 3 so as to be opposite to the electromagnet 7. When the electromagnet 7 is started, the magnetic material 8 is attracted, and the flange of the rotary shaft 3 is pressed against the flange of the fixed shaft 2 to generate friction, the spool 13 is stopped integrally with the rotary shaft 3. The electromagnet 7 is not actuated at the beginning of the welding operation, and is actuated for a preset time at the end of the welding operation. COPYRIGHT: (C)2011,JPO&INPIT