Conductive nozzle assembly

Abstract

The invention discloses a conductive nozzle assembly, and belongs to the field of welding. The conductive nozzle assembly comprises a conductive connector for a welding wire to penetrate, a pressing sleeve and a clamping sleeve. The upper end of the conductive connector is connected with the lower end of a conductive rod. The pressing sleeve axially and movably sleeves the conductive connector. The upper end of the clamping sleeve abuts against the pressing sleeve, and the lower end of the clamping sleeve and the lower end of the pressing sleeve are set to be matched chamfer structures. When the pressing sleeve moves upwards, the lower end of the clamping sleeve is subjected to hole shrinkage, and accordingly the welding wire is clamped. The clamping sleeve sequentially communicates with alarge-diameter hole, a transition hole and a small-diameter hole from top to bottom. The chamfer structures are arranged on the outer wall corresponding to the small-diameter hole. According to the provided conductive nozzle assembly, when the pressing sleeve moves upwards, the welding wire can be clamped through the clamping sleeve, and the situation that the welding wire swings in the operationprocess, and consequently accurate alignment with the position needing to be welded through the welding wire is influenced is avoided.

Description

technical field [0001] The invention relates to the field of welding, in particular to a contact tip assembly. Background technique [0002] The welding torch is widely used in the submerged arc welding process because of its simple operation and low cost. During application, the welding wire is continuously fed into the welding torch through the wire feeder. The welding torch generates heat by using the high current and high voltage provided by the welding machine, and This heat is focused on its tail to melt the wire at the end of the torch, allowing the melted wire to penetrate where the part to be welded needs to be welded. In this process, in order to guide the welding wire to accurately align with the position to be welded, it is necessary to install a contact tip for straightening the welding wire at the tail end of the welding torch. [0003] The prior art provides a tubular contact tip, which is connected to the lower end of a conductive rod arranged at the tail en...

AI Technical Summary

Problems solved by technology

[0005] The inner diameter of the tubular contact tip provided by the prior art is 0.2mm-0.4mm larger than the outer diameter of the welding wire, which easily causes the welding wire to shake during operation, thus affecting its alignment to the position to be welded

If the inner diameter of the tubular contact tip is reduced, it will affect the smooth lowering of the welding wire

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