Enhanced welding device

Abstract

The present invention relates to a welding device suitable for joining by welding a first and a second part at a weld joint, said parts defining a joint face between said parts, the device comprising: a traveling support mean ( 2 ) for moving the device along the weld joint; at least one welding means ( 4 ) cooperating with said traveling support means ( 2 ) so as to be kept at a distance from said weld joint; means for automatic motion control of the traveling support mean ( 2 ) in particular. According to the invention, said at least one welding means is mounted on a single supporting piece ( 3 ) facing substantially parallel with said joint face; the device further comprises a first motorized actuator ( 5 ) attached to said traveling support means ( 2 ) and provided with a first protuberance ( 51 ) cooperating with a first seating ( 52 ) open onto a first end face of said single supporting piece ( 3 ); a second motorized actuator ( 6 ) attached to said traveling support means ( 2 ) and provided with a second protuberance ( 61 ) cooperating with a second seating ( 62 ) open onto a second end face of said single supporting piece ( 3 ) such that said first ( 51 ) and second ( 61 ) protuberances are movable in a plane substantially perpendicular to said joint face and generate a control movement of the welding means supporting piece ( 3 ).

1 . Welding device suitable for joining by welding a first and a second part at a weld joint, said parts defining a joint face between said parts, the device comprising:
 a traveling support means for moving the device along the weld joint;   at least one welding means cooperating with said traveling support means so as to be kept at a distance from said weld joint;   means for the automatic motion control of the traveling support means in particular characterized in that said at least one welding means is mounted on a single supporting piece substantially parallel with said joint face, in that the device further comprises a first motorized actuator attached to said traveling support means and provided with a first protuberance cooperating with a first seating open onto a first end face of said single supporting piece;   a second motorized actuator attached to said traveling support means and provided with a second protuberance cooperating with a second seating open onto a second end face of said single supporting piece such that said first and second protuberances are movable in a substantially perpendicular plane to said joint face and generate a control movement of the welding means supporting piece.   
     
     
         2 . Device according to  claim 1  wherein said motion control means enables a simultaneous linear movement of said first and second protuberances in the same direction. 
     
     
         3 . Device according to  claim 1  wherein said motion control means enables simultaneous linear movement of said first and second protuberances in two opposite directions, so as to create a rotation of the welding means supporting piece about a substantially single perpendicular axis to the weld joint. 
     
     
         4 . Device according to  claim 2  or  claim 3  wherein the motion control means make it possible to independently change the movement amplitude of the first and/or second protuberance. 
     
     
         5 . Device according to  claim 1  or  2  further comprising means for varying the distance between said welding means and the weld joint. 
     
     
         6 . Device according to  claim 1  or  2  further comprising means for individually varying the distance between at least one first and/or at least one second welding means and said weld joint. 
     
     
         7 . Device according to  claim 1  further comprising containment means situated between the supporting piece and the weld joint. 
     
     
         8 . Device according to  claim 7  wherein said containment means comprise at least one flange cooperating with the single supporting piece and defining a confinement volume together. 
     
     
         9 . Device according to  claim 1  further comprising at least one sensor attached on at least one of the components of the device, for measuring the position of said sensor with respect to the weld joint. 
     
     
         10 . Device according to  claim 1  wherein said parts to be joined by welding have at least one annular cross-section.