Concrete stair plate extrusion molding machine

The invention discloses a concrete stair plate extrusion molding machine, which comprises a frame, wherein a motor and a speed changing box connected with the motor are arranged at one end of the frame; a hopper is arranged on the middle part of the frame; a vibration plate, a polished plate and a counter weight are sequentially arranged on the frame on one side of the hopper; a vibrator is arranged on the vibration plate; a sliding block is arranged below the hopper; push rods are arranged on the two sides of the sliding block; the other end of each push rod is connected with a cam on an output shaft of the speed changing box; the sliding block is V-shaped; the vibration plate and the polished plate are triangular; the shape and the size of the sliding block are matched with those of the vibration plate and the polished plate; a core pipe bracket is arranged on the frame between the speed changing box and the sliding block; and core pipes are arranged on the core pipe bracket. The vibration plate and the pol