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Automatic tracker of longitudinal seam welding for major diameter welding pipe

An automatic tracking device, longitudinal seam welding technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of increased production cost, missing welding, time-consuming and laborious, etc., to achieve reliable work, rigorous structure, and ensure welding quality. Effect

Inactive Publication Date: 2007-08-08
ZHEJIANG JIULI HI TECH METALS
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AI Technical Summary

Problems solved by technology

However, for large-diameter and long welded pipes, such as Φ219×6000mm welded pipes, the welding seam misalignment can sometimes reach 30mm, and the deviation angle can reach 15.7°. The requirements of accurate welding seam will cause defects such as missing welding. Therefore, the only way to ensure that the welding torch is perpendicular to the welding seam is to use the arc-shaped carriage to deflect the welding torch around the central axis of the welded pipe.
However, welded pipes with different diameters need to be equipped with different arc-shaped carriages. Replacing the carriages during work is time-consuming and laborious, and increases production costs.

Method used

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  • Automatic tracker of longitudinal seam welding for major diameter welding pipe
  • Automatic tracker of longitudinal seam welding for major diameter welding pipe

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Embodiment Construction

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] A welding torch 10 and a welding wire conveying mechanism 9 are installed on the trolley 5, and the automatic tracking of the welding torch height of the welding torch 10 adopts AvC control, that is, arc voltage constant value control. A visual sensor 8 and a video monitor 6 are installed in front of the welding torch 10, and the visual sensor 8 is connected with a microcomputer controller 18 through an interface circuit. In this embodiment, the trolley 5 is also specially provided with a miniature cross slider 7 with a visual sensor 8, so that the relative position of the visual sensor and the welding torch can be adjusted in time through the laser stripes and welding seam positions in the video monitor 6. The driving mechanism 3 of the trolley 5 is composed of a servo motor and a reducer, and is meshed with the rack guide rail 2 on the gantry beam 1 above the wo...

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Abstract

The automatic tracking device for a big diameter longitudinal seam welding comprises a visual sensor integrated with the welding gun in front of it, interface circuit, computer controller and welding seam tracking execution mechanism, with the said welding gun and visual sensor installed on the running cart along the seam direction, welding tube resting on the rolling wheel on the rack, with the weld seam track execution device made of servo motor and decelerator formed roller drive device and the frequency change motor and turbine screw lifting device formed rolling rack lifting mechanism. It is compact in structure, reliable in working.

Description

technical field [0001] The invention relates to a seam tracking device for arc welding. Background technique [0002] The welding seam tracking device is an important device in the welding automatic control system. At present, the more advanced welding seam tracking device is a visual sensor tracking device, which is mainly composed of a visual sensor, a welding torch slider adjustment device and a microcomputer controller. Its working principle Yes, the sensor transmits the received welding seam position information to the microcomputer controller through the interface circuit, and the microcomputer controller calculates and processes the welding seam deviation and deviation change trend information, and sends the servo motor of the welding torch cross slider adjustment mechanism through the interface circuit Send a command signal to drive the welding torch to move left, right, up and down in two dimensions, so as to realize the automatic tracking of the welding torch on th...

Claims

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Application Information

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IPC IPC(8): B23K9/127
CPCY02P70/10
Inventor 曹志樑杜兴吉慎建民朱建初
Owner ZHEJIANG JIULI HI TECH METALS
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