Universal control structure for welding devices of an automatic welding machine

Claim 1

An automatic welding machine, comprising a longitudinal column defining an axis A, an elongated carrier defining a longitudinal axis B being displaceably mounted on said column in directions along said axis A and B, respectively, a beam defining a longitudinal axis C perpendicular to said axes A and B rigidly connected to an end of said carrier, said beam by means of said carrier being movably supported by said column, said carrier is displaceably guided on said column both in the direction of the longitudinal axis B of said carrier as well as in the direction of axis A (perpendicularly to the axis B) such that said beam is displaceable both in a direction axis B (perpendicular to its longitudinal axis C) as well as in a direction axis A (perpendicular to its longitudinal axis C), at least two holder means holding welders, respectively, said holder means are independently displaceably, mounted on said beam along said axis C, a plurality of articulation means on each of said holder means for swinging, deflection and rotation thereof about axes α, β and γ, respectively, thereof, a plurality of drive means coordinated to said holder means and respectively to said welders held on said holder means, respectively, for welding seams non-symmetrically, parallel or symmetrically to each other, for displacing said at least two holder means independently and dependently, respectively, on said beam and for moving said articulation means on said holder means for the swinging, deflection and rotation of the articulation means and said welders held on said holder means respectively.