Welding device for metal door and window machining

The utility model relates to a welding device for processing metal doors and windows, which comprises a fixing plate, a U-shaped support rod is slidably arranged in the middle of the inner side of the fixing plate in a penetrating manner, two ends of the support rod extend to the outer side of the fixing plate, and two rollers are oppositely sleeved on the peripheral side of the support rod. The utility model relates to the technical field of metal door and window welding devices. When the metal belt is welded on the side edge of the metal door and window, the guide assembly, the adjusting assembly, the fixing plate and the supporting rod are matched with one another, so that the rolling wheels sequentially press the part of the metal belt on the side edge of the metal door and window, and no gap exists between the metal belt and the side edge of the metal door and window; an operator can weld the metal belt and the side edge of the metal door and window when the metal belt is tightly attached to the side edg