A dual-wire rotating arc sensor

Abstract

The invention discloses a double-thread rotary electric arc sensor applied to the field of welding automation, robot welding and automatic tracking of welding lines. The double-thread rotary electric arc sensor mainly comprises a small-size wire feeding machine, a fork-shaped main conductive rod, a secondary conductive rod, a driving mechanism, a conductive rod swinging fixing mechanism, an eccentric adjusting mechanism and a shell body. When the driving mechanism moves, the fork-shaped main conductive rod and the wire feeding machine are driven to rotate synchronously, and the secondary conductive rod does tapered rotation along the main conductive rod, so that a double-thread rotary electric arc is formed. Compared with the prior art, the double-thread rotary electric arc sensor has the following advantages and prominent effects that the problem of winding a double-thread rotary electric arc welding wire is solved, and the welding speed and the welding efficiency are improved; and in application of vertical position welding and over-head position welding, the flowing and dropping of a molten pool can be reduced under the condition of ensuring a certain welding speed and the quality of welding lines is improved.

Description

technical field [0001] The invention relates to the technical field of welding torches, in particular to a double-wire rotating arc sensor. Background technique [0002] As a welding sensing method, the arc sensor has attracted much attention from all over the world. Many welding equipment research and manufacturing institutions at home and abroad are working hard to develop this field. Arc sensor, suitable for different welding methods such as submerged arc welding, TIG and MIG / MAG, some have been used in welding production. [0003] In recent years, improving welding production efficiency and welding quality, realizing automatic welding production, and reducing welding defects have become urgent requirements for actual production. The improvement of welding productivity mainly has two aspects: one is the increase of welding speed when welding thin plates; the other is the increase of deposition rate when welding medium and thick plates. Twin-wire welding has attracted th...

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Problems solved by technology

And because the molten pool is partly out of the protection of the slag, if the operation or angle is improper, it is easy to produce pores

In overhead welding, since the position of the molten pool is below the weldment, the gravity of the molten drop metal of the electrode will hinder the excessive droplet, and the metal in the molten pool will also fall under the action of its own gravity. The larger the volume of the molten pool, the higher the temperature, and the surface tension of the molten pool The smaller it is, the back of the weld is prone to depression during overhead welding, and the weld bead appears on the front bead, making it difficult to form the weld bead.

[0005] In order to overcome the problems in the forming process of vertical welding and overhead welding, in the traditional welding process, the welding current is generally reduced to prevent the molten pool metal from flowing to improve the welding quality; however, reducing the current will lead to a decrease in welding speed and efficiency, and there is currently no such A Welding Sensor That Can Better Consider Efficiency and Welding Quality

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