Aluminum alloy door and window welding device with clamping function and method thereof

The invention relates to the technical field of aluminum alloy door and window welding, in particular to an aluminum alloy door and window welding device with a clamping function and a method thereof. The fixing device comprises a seat frame, a positioning device is arranged in the seat frame, the positioning device is composed of a plurality of clamping pieces, the positions of the clamping pieces are adjusted according to the size of the aluminum alloy door and window needing to be fixed, a frame of the aluminum alloy door and window is fixedly clamped, and the seat frame drives the positioning device to turn over. The four clamping pieces clamp four frames of the aluminum alloy door and window correspondingly, the position, placed in the overturning frame, of the aluminum alloy door and window is fixed, then the overturning piece drives the aluminum alloy door and window to be overturned, after one face of the aluminum alloy door and window is welded by a worker, the overturning piece drives the aluminum a