Metal bending machine with adjustable bending angle

The utility model discloses a metal bending machine with an adjustable bending angle, which comprises a horizontally arranged device main body, and the whole device main body is of a square structure; the extrusion wheel is rotationally mounted outside the front side surface of the device main body; the workpiece main body is transversely placed between the extrusion wheel and the driving wheel; the linear sliding block is arranged in the device main body; the limiting sliding groove is formed in the outer surface of the front side of the device body. According to the metal bending machine with the adjustable bending angle, the novel structural design is adopted, chippings falling off from the edge of a metal material can be preliminarily collected through a dust collecting plate in the using process of the metal bending machine, and in the working process, an extrusion cam is used for driving a knocking ball to knock the dust collecting plate; and therefore, the collected chippings enter the collecting box t