Automatic integrated flange welding equipment with center through hole

Abstract

The invention discloses automatic integrated flange welding equipment with a center through hole. A welding cross-shaped arm of the equipment is connected with a base of a position changing machine in a slide mode and can move front and back relative to the base. A welding chuck is connected with a main motor through a rotary support fixed to an overturn frame. The overturn frame is provided with the center through hole. A workpiece can penetrate through the center through hole. Any parts of the workpiece can be clamped by the welding chuck so that position changing machine, a welding power source and a welding gun can be of an integrated type structure. Not only is the automatic integrated flange welding equipment adapted to welding of a long pipe, but also all weld joints in the workpiece can be welded without repeated changing of the relative positions of the welding cross-shaped arm and the position changing machine when the workpiece is provided with the multiple weld joints. The welding cross-shaped arm is provided with a welding oscillator and an arc-length adjuster. The welding gun is installed on the arc-length adjuster. Swinging and up-down adjustment can be achieved automatically, so that the automatic integrated flange welding equipment is adapted to welding of a workpiece with the requirement for a groove and a workpiece with obvious ovality, and no human adjustment or intervention are needed. Closed-loop control is achieved, and the welding quality is easy to ensure.

Description

technical field [0001] The invention relates to the technical field of welding equipment, in particular to an automatic welding equipment for pipes and flanges. Background technique [0002] Pipeline welding equipment generally consists of a positioner, a welding power source, and a welding torch. The positioner includes a base, a displacement motor, and a machine head connected to the base through the rotation shaft of the machine head. The pinion at the shaft end of the positioner motor is driven and fixed on the machine. The large gear on the rotary shaft of the head displaces the machine head. The machine head includes a flip frame, a main motor, a rotary shaft, and a welding chuck. The welding chuck is connected to the end of the rotary shaft, and the rotary shaft and welding chuck are driven by the main motor. Rotate, and then drive the workpiece to rotate. Since the welding fixture of the positioner can only hold the end of the workpiece, when welding a workpiece whos...

AI Technical Summary

Problems solved by technology

After the whole weld seam is welded, it is necessary to turn off the welding power supply first, and then turn off the positioner; because in the welding equipment of the prior art, the positioner part, the welding power source and the welding torch part are two relatively independent systems, When there are multiple welds, it is necessary to constantly change the relative position of the welding cross arm and the positioner, and repeat the steps of adjusting the position of the welding cross arm, turning on the positioner, turning on the power, and welding to complete the welding of all welds on the workpiece. Welding, low welding efficiency

Moreover, closed-loop control cannot be realized, the operation is cumbersome, the repeatability is poor, the labor intensity of welding operators is high, the production efficiency is low, and the welding quality is not easy to control

In addition, since the welding torch is fixed at a certain position above the weld seam, the welding torch cannot automatically swing and move up and down during the welding process. When welding parts with groove requirements, it needs to be manually adjusted in real time to make the welding torch swing left and right; especially when When the pipe fittings have obvious ellipticity, it is necessary to manually adjust the height of the welding torch in real time to realize the adjustment of the arc length and stabilize the arc, which not only increases the labor intensity of the operator, but also makes it difficult to guarantee the welding quality

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