Plate material cutting mechanism

The utility model discloses a plate material cutting mechanism which comprises a working table, a limiting baffle is fixedly connected to the top face of the working table, limiting plates are fixedly connected to the two ends of the top face of the working table respectively, a fixing frame is fixedly connected to the top face of the working table, a sliding groove is formed in the top face of the fixing frame, and a gear motor is fixedly installed on one side of the top of the fixing frame. A rotating shaft of the gear motor is fixedly connected with one end of a third connecting rod, the other end of the third connecting rod is fixedly connected with one end of a lead screw, and the other end of the lead screw is rotationally connected into the fixing frame. By arranging the limiting baffle, the limiting plate, the first air cylinder, the first connecting rod, the mounting plate, the cutting knife and the like, a plate can be limited and cut, by arranging the gear motor, the third connecting rod, the lead