Symmetrical arc swing mechanism of full position automatic double welding torch pipeline welder

Abstract

The present invention relates to full position automatic pipeline welder. The improved symmetrical arc swinging mechanism for the double torch full position automatic pipeline welder has output shaft connected to the first transmission gear, the second meshing transmission gear fixed on the main swinging support board, the connecting shaft supported on the frame, the secondary swinging support board together with the main swinging support board mounted on the connecting shaft, welding torch support board fixed on the secondary swinging support board and the double torch mechanism set on the welding torch support board. The symmetrical arc swinging mechanism combines two welding torch swinging mechanisms for simultaneous swinging. The present invention has simple structure.

Description

technical field [0001] The invention relates to an all-position automatic welding machine for pipelines. Background technique [0002] At present, the special swing mechanism of the pipeline all-position automatic welding machine represented by the American CRC-EVANS company and the French SERIMER DASA company has the following shortcomings in the structural design and operation and use: one is to use two separate "cross slides" ” to realize the linear swing of the two welding torches. Due to the straight-line swing, unmelted defects at the bottom of the groove are prone to occur during the welding process, and the double-straight swing structure is complicated and the control is cumbersome. In addition, the use of two separate "cross slides" must add a swing motor, which not only increases the weight of the welding trolley, but also brings problems such as increasing the control communication interface. The second is to use two independent control units to control respect...

AI Technical Summary

Problems solved by technology

[0002] At present, the special swing mechanism of the pipeline all-position automatic welding machine represented by the American CRC-EVANS company and the French SERIMER DASA company has the following shortcomings in the structural design and operation and use: one is to use two separate "cross slides" ” to realize the linear swing of the two welding torches

Due to the straight-line swing, unmelted defects at the bottom of the groove are prone to occur during the welding process, and the double-straight swing structure is complicated and the control is cumbersome

In addition, the use of two separate "cross slides" must add a swing motor, which not only increases the weight of the welding trolley, but also brings problems such as increasing the control communication interface.

The second is to use two independent control units to control respectively, so it is difficult to calibrate the arc starting point and arc extinguishing point of the two welding torches during the welding operation, and the two welding torches need to be adjusted separately, and the lagging welding torch is covered by the front welding torch , prone to operational errors directly causing welding defects

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