WELDING HEAD Russian patent published in 1995 - IPC

FIELD: welding. SUBSTANCE: welding head for the automatic welding of flanges with shells has housing 1. Hollow shaft 4 connected with welding torch 7 is mounted in the housing on bearings 2, 3. The current supply to the torch is made in the form of cylindrical isolator 31 hard-mounted on hollow shaft 4. Nests 32 are made in the isolator not uniformly along its circumference. Floating brushes 34 are mounted in the nests by means of spring 33. The upper face end of brushes 34 is conjugated with immovable copper disk 35 hard-mounted on the lower face end of the housing. The lower face end of the brushes is conjugated by means of an electric drive with copper disk 36 mounted on the lower face end of isolator 31. The mechanism of the hollow shaft rotation includes electric drive 20, conducting pinion 21, idle and conducted 23 pinions. The housing is fastened on stand 28 with the help of a ball-type articulation and can shift in the vertical direction. The head has the feeding mechanism of the welding wood, the system of tracking the arc length and the centering guide made in the form of two parts spring-loaded one relative another. A mirror is mounted on the housing of the welding torch. EFFECT: enhanced efficiency of the electrode adjustment relative to the junction, enhanced reliability of the head in the exploitation, stability of the arc burning, enhanced conditions for watching the movement of the welding torch. 2 cl, 5 dwg