PURPOSE: To automate welding work of a reinforcing member on a steel sheet.

CONSTITUTION: The automatic welding equipment is provided with a conveyor to convey the steel sheet 1 in the welding direction, a supporting member to support the reinforcing member 3 at the upper position thereof, a restraining machine 5 to position the reinforcing member 3 mounted on the steel sheet 1 from the supporting member and a welding torch 6. The restraining machine 5 is constituted of a guide plate 25 to support the side of the reinforcing member 3 along the longitudinal direction of the conveyor, a pressurizing machine 26 to press the reinforcing member 3 on the steel sheet 1 from above by a horizontal bar 30 and a pusher 35 to hold the reinforcing member 3 at the interval with the guide plate 25 by a horizontal pressing bar 36 and sliding members 37 are provided on the surfaces of the guide plate 25, the horizontal bar 30 and the pressing bar 36. Since the reinforcing bar 3 is guided and restrained by the guide plate 25 so that the deviation is not caused, positioning work can be carried out accurately and easily and the conveyance of the reinforcing member 3 is no obstructed even in the positioned state, hence work cam be carried out continuously.