Automatic angle steel bending and welding method

The invention relates to an automatic angle steel bending and welding method which comprises the following steps: conducting angle cutting on angle steel, wherein an upper die moves downwards to drive a material stirring unit to rotate, the angle steel slides to a die base body along a feeding slot, then the upper die continues to move downwards, and a punch and a punching slot are matched to conduct angle cutting on the angle steel; angle steel bending, wherein the upper die moves upwards, a drive assembly pushes a mounting base and an ejector pin assembly to move forwards to be matched with a die holder body for bending, the two ends of the angle steel rotate to enter a containing slot formed by the mounting base and the rotating plate, and pressure maintaining is conducted through a fastening assembly; angle steel welding, wherein the drive assembly drives the mounting base to move back, under the action of a speed adjusting assembly, the ejector pin assembly and the mounting base generate the speed differ