Cutting torch nozzle follow-up protection mechanism

Abstract

The invention discloses a cutting torch nozzle follow-up protection mechanism which comprises a cutting torch support, a positioning sleeve, a return spring, a follow-up support composed of a bushing and a semicircular cap, a cap and a support wheel structure. The positioning sleeve is fixed on the cutting torch support, a threaded hole is drilled at the front end of the positioning sleeve, a positioning screw is mounted in the hole, the bushing of the follow-up support sleeves a cutting torch and is inserted into the positioning sleeve, a thread matched with a positioning round nut is tapped at the tail of the bushing of the follow-up support, the return spring sleeves the bushing of the follow-up support, the rear end of the return spring is butted against the end face of the positioning sleeve while the front end of the same is butted against the end face of the semicircular cap of the follow-up support, support wheels are hinged to pin shafts through a stop plate and can rotate freely around the pin shafts, and the support wheels and the caps are connected with the semicircular cap of the follow-up support. The cutting torch nozzle follow-up protection mechanism is simple and compact in structure, distance between the support wheels and a cutting torch nozzle is adjustable, and safety of the cutting torch nozzle is guaranteed to the greatest degree under the condition that complete cutting is ensured.

Description

Technical field [0001] The invention relates to plasma cutting, in particular to a follow-up protection mechanism of a cutting gun nozzle of a cutting machine. Background technique [0002] Plasma cutting is a processing method that uses the heat of a high-temperature plasma arc to partially or partially melt (and evaporate) the metal at the incision of the workpiece, and uses the momentum of the high-speed plasma to remove the molten metal to form an incision. Its use does not require auxiliary equipment such as compressors, transformers, gas cylinders, etc., and is relatively light; and it is equipped with a welder's shoulder bag, which is convenient to carry; the cutting speed is fast and the precision is high; the cutting opening is small, neat, and no slagging phenomenon. Therefore, it is a commonly used cutting method in steel pipe cutting machinery. [0003] According to the requirements of the working conditions, the distance between the cutting gun nozzle and the workpiec...

AI Technical Summary

Problems solved by technology

[0003] According to the requirements of working conditions, when using plasma cutting, the distance between the nozzle of the cutting gun and the workpiece should be adjusted to 3-8mm. Exceeding the set distance, touching or even impacting the cutting torch, resulting in excessive damage to the cutting torch

And in the process of processing, the outer diameter of the workpiece often changes between φ297mm~φ425mm, and each change corresponds to the need to readjust the position, which is very cumbersome and affects work efficiency

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