A Stepless Adjustable Eccentric Rotating MIG Gas Shielded Welding Torch

Abstract

The invention discloses a stepless adjustable eccentric rotation consumable electrode gas protection welding gun. The stepless adjustable eccentric rotation consumable electrode gas protection welding gun comprises a drive device, an eccentric device, a gas protection device and electric conduction rods. The drive device comprises a hollow shaft torque motor, a connecting sleeve, an encoder and the like. The movement of the motor is accurately controlled through the encoder and the driver. The eccentric device comprises a bearing inner sleeve and an eccentric sleeve. During welding stick eccentricity achieving, a smooth transition process exists, and an overall mechanism of the welding gun is more simple and smaller in power consumption. The gas protection device is arranged at the lower end of the eccentric device. When the motor rotates, the upper electric conduction rod, the bearing inner sleeve, the eccentric sleeve and the lower electric conduction rod are driven to rotate, and the lower end of the lower electric conduction rod is connected with an electric conduction nozzle, so that a welding stick does the cylindrical rotation; by utilization of the stirring action of a rotating arc to a molten pool, the welding line structure is refined, the welding line tenacity is improved, the fusion depth of the two sides of a welding line is improved, and the forming and welding quality of the welding line is improved. The overall structure is simple, an eccentric mechanism is simplified, the application range is wide, and automation is easy to achieve.

Description

technical field [0001] The invention relates to a welding torch, in particular to a steplessly adjustable eccentric rotating gas-shielded welding torch, which belongs to the field of welding and is suitable for gas-shielded welding. Background technique [0002] Gas metal arc welding has the advantages of high production efficiency, wide application range, low welding cost, low energy consumption, and no slag cleaning after welding. It is mainly used in shipbuilding, automobile manufacturing, petrochemical, engineering machinery and other fields. Rotary arc welding is that during the welding process, the arc moves along the welding direction and rotates with the rotation of the welding wire at a certain radius and rotation frequency. Its main advantages: (1) The rotation of the arc during the welding process has a certain stirring effect on the molten pool, increases the fluid flow rate, and helps the molten metal overflow from the gas and the uniform distribution of benefic...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simple and compact structure, convenient assembly, stepless adjustable eccentric rotating molten electrode gas shielded welding torch, to overcome the shortcomings of the existing rotary welding torch, such as complex eccentric mechanism, large welding torch size, and short service life.

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