Conveying and positioning equipment for pipe flange welding

The utility model belongs to the field of pipe flange welding, and particularly relates to a conveying and positioning device for pipe flange welding, which comprises a base, a vertical rod and a connecting rod, a workbench is fixed above the base, a conveying mechanism is arranged in the workbench, an extension block is fixed at the front end of the workbench, and the extension block is connected with the vertical rod. A first air pressure rod is installed in the vertical rod, a cross rod is connected to the upper portion of the connecting rod, a second air pressure rod is arranged in the cross rod, and a flange plate is installed on the left side of the vertical rod; through the arrangement of the fixing plate, the flange plate is fixed on the fixing plate through the positioning pin, after a pipe is conveyed to the workbench through the conveying mechanism, the clamping plates are aligned to clamp the pipe, and then the pipe is moved to a proper height through the first air pressure rod so that the pipe ca