Special-shaped hole punching device for plastic-steel doors and windows

The utility model relates to the technical field of door and window punching, in particular to a plastic-steel door and window special-shaped hole punching device which comprises a machine frame, a material receiving hopper, a U-shaped plate, a fixing frame and a base. A guide groove is formed in the rack, a transmission roller is arranged in the guide groove, and a motor A is in driving connection with the transmission roller. The receiving hopper is arranged in the guide groove and located below the transmission roller, and a waste pipe is arranged at the bottom of the receiving hopper. The U-shaped plate is slidably arranged in the storage groove, and the bidirectional driving assembly is in driving connection with the U-shaped plate. The fixed frame is arranged on the rack, a linear module is arranged on the fixed frame and is in driving connection with a movable seat, a hydraulic cylinder is arranged on the movable seat and is in driving connection with a movable plate, and a punching head is detachably