Punching device for integrated wallboard

The utility model discloses a trepanning device for an integrated wallboard, which comprises a mounting table, a second sliding groove is formed in one side of the mounting table, and a longitudinal moving component is fixedly mounted in the second sliding groove; a supporting assembly and a transverse moving assembly which are used for assisting the handheld perforating machine are installed at the bottom of the connecting frame through a reset mechanism, and the transverse moving assembly is slidably connected with the interiors of the two sides of the installing table correspondingly. The clamping assemblies are installed at the two ends of the transverse rod correspondingly, the number of the clamping assemblies is four, two sets of clamping assemblies are connected through the longitudinal rod, the longitudinal moving assembly and the transverse moving assembly are matched so that a mounting table of the handheld perforating machine can be mounted to move, and in addition, the clamping assemblies are res