Angle punching device for punching angle on side wall of square pipe

The utility model relates to the technical field of pipeline processing, in particular to a corner punching device for punching corners on the side wall of a square pipe, which comprises a positioning mechanism for positioning the square pipe and a corner punching mechanism for punching corners on the side wall of the square pipe. The positioning mechanism comprises a supporting base and an opposite clamping mechanism arranged on the supporting base and used for clamping a square pipe, the opposite clamping mechanism comprises a bidirectional linear adjusting mechanism and a clamping plate connected with two adjusting ends of the bidirectional linear adjusting mechanism, and a right-angle groove is formed in the end face of the clamping plate; the angle punching mechanism comprises a linear adjusting mechanism and an angle punching assembly, the angle punching device is simple in structure and flexible to use, the angle punching efficiency and the angle punching quality are improved when angle punching operat