Rotating arc narrow gap welding torque

Abstract

The invention provides a rotating arc welding torch with narrow clearance, comprising a hollow axle high speed servo motor 1, an eccentric sleeve 2, a center-up-adjusted bearing 3, a sealed bearing4, a center-down-adjusted bearing 5, a conducting pole 6, a welding torch shell 8 and a conducting nozzle 14, etc. The invention is characterized in that the hollow axle high speed servo motor 1 and the eccentric sleeve2 which are connected together drive the conducting pole 6 and the conducting nozzle 14 to make an eccentric revolution around the axes of the welding torch; the revolution original point is close to the middle part of the conducting pole 6 which runs through the fixed center-down-adjusted bearing 5 and is fixed with the center-down-adjusted bearing 5; the revolving range is regulated jointly by the eccentric magnitude of the eccentric sleeve 2 and the position where the center-down-adjusted bearing 5 of the revolution original point exists on the conducting pole 6. The welding wire produces the rotating arc along with the revolution of the conducting pole 6 and the conducting nozzle 14. A soft wire cable 12 is connected with the loading welding power supply of the soft wire cable. The wearing components of the invention are all standard parts; thereby the implementation cost is low and the welding torch has long service life; using the soft conducting wire connection is convenient and reliable; when in operation, the welding torch can not be affected by the external disturbances.

Description

technical field [0001] The invention relates to a welding device, in particular to a narrow gap welding device. technical background [0002] Narrow gap GMAW is a welding technique for thicknesses generally greater than 20mm. Its advantages are moderate heat input, high welding efficiency, suitable for all-position welding, and good comprehensive performance. The application level of narrow-gap GMAW welding represents the narrow-gap welding level of a country, and now the narrow-gap welding technology in western industrialized countries has been widely used in actual production. There are only a small amount of practical applications in our country, and many of them are still in the experimental stage. [0003] The main technical difficulties of narrow-gap GMAW welding are sidewall non-fusion and welding spatter, and the size of the groove gap is mostly 9-12mm. The fundamental way to solve the sidewall non-fusion is to make the arc burn near the sidewall and enhance the h...

AI Technical Summary

Problems solved by technology

Because the conductive rod itself rotates, it is difficult to connect the electrodes, and the brush is used to connect, and the brush wears a lot under the condition of high-speed rotation, which is likely to cause poor conductivity.

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