Blowback air nozzle for welding wire production

The utility model provides a back-blowing air nozzle for welding wire production, which comprises a sleeve and a core tube, the core tube is nested in the sleeve, an air inlet is arranged on the lateral side of the sleeve, the core tube is of a splicing structure and can be separated along the direction perpendicular to the axis, a wire passing channel is arranged in the core tube, an air blowing hole channel is arranged on the lateral side of the core tube, and the wire passing channel is communicated with the air blowing hole channel. One end of the blowing hole channel is communicated with the wire passing channel, and the other end is communicated with the air inlet. According to the reverse blowing air nozzle, the air nozzle is improved into the sleeve and the core pipe which are nested with each other, and the core pipe which is directly contacted with the welding wire is designed into a two-half type left-right splicing structure, so that when the air nozzle needs to be replaced and maintained in the w