The invention discloses a
punching device for building materials. The
punching device comprises a box body, wherein electric telescopic rods are fixedly connected to the two sides of the top of the box body, a transverse plate is fixedly connected to the top of the electric telescopic rods, a first motor is fixedly connected to the middle of the bottom of the transverse plate, the output end of the first motor is fixedly connected with a
drill rod, the interior of the box body is transversely and slidably connected with a lifting plate, a fixing block is fixedly connected to the middle of thebottom of the lifting plate, and supporting plates are fixedly connected to the two sides of the top of the lifting plate. The electric telescopic rods, the first motor, the second motor, the
drill rod, the lifting plate, the supporting plates, clamping blocks, a transmission shaft, a first movable rod, a second movable rod, the fixing block, guide sleeves and guide columns are cooperatively used,so that the effect of more firm clamping is achieved, and the problems that the
punching device on the market is not stable when being clamped, a workpiece is easy to shake during the punching process, the
cutting quality is influenced, and the working efficiency is reduced are solved.