90-degree overturning machine for welding

The utility model relates to the field of crane production devices, in particular to a 90-degree overturning machine for welding. The 90-degree overturning machine for welding comprises a rack, a workpiece clamping component and an overturning drive mechanism. The workpiece clamping component comprises a clamping arm assembled on the rack in a hinged mode, the clamping arm is assembled on the rack through a hinge shaft stretching in the left-right direction in a hinged mode to form a seesaw structure, one end of the clamping arm is provided with clamping claws for assembling a workpiece to the machined, the other end of the clamping arm is connected with the overturning drive mechanism, and the overturning drive mechanism comprises a telescopic actuator and is connected with the end, away from the clamping claws, of the clamping arm through the telescopic actuator. By means of the 90-degree overturning machine, in the using process, the workpiece to be machined can be fixed to the clamping arm; when the workpiece to be machined needs to be overturned, the workpiece to be machined does not need to be disassembled or connected with a crane device, and the problems that a crane component is low in overturning efficiency and high in risk are solved.