Round hole punching mechanism of round hole wiring board

The utility model discloses a round hole punching mechanism of a round hole wiring board, which comprises a punching workbench main body, a hydraulic cylinder for punching is arranged at the top of the punching workbench main body, and a hydraulic cylinder driving shaft is arranged at the bottom of the hydraulic cylinder for punching; according to the round hole punching mechanism of the round hole wiring board, the adjusting punching cleaning device is arranged, the size of the round hole wiring board is adjusted by moving a movable adjusting shaft in an adjusting shaft moving groove, then a hydraulic cylinder for punching is started, a punching cutter mounting column drives a wiring board punching cutter to move downwards to the round hole wiring board needing to be punched, and punching is completed. When the round hole wiring board is punched, round hole punching is conducted on the round hole wiring board, punched waste enters the waste collecting box in the punching workbench body through the waste disc