Auxiliary tool for welding frame for aluminum alloy door and window machining

The utility model provides an auxiliary tool for welding a frame for aluminum alloy door and window processing, and relates to the technical field of door and window processing, the auxiliary tool for welding the frame for aluminum alloy door and window processing comprises a base, the top of the base is rotatably connected with a lower U-shaped clamping seat, and the top of the base is fixedly provided with a support; the support comprises a transverse plate located over the base, the bottoms of the left end and the right end of the transverse plate are fixedly connected with vertical rods arranged at the top of the base, a supporting plate located below the transverse plate is arranged between the two vertical rods, and a pushing mechanism used for pushing the supporting plate to ascend and descend is arranged on one side of the supporting plate. The supporting plate is pushed to ascend and descend between the two vertical rods by adjusting the pushing part, the distance between the lower U-shaped clamping