PU plate conveying device

The utility model relates to a PU plate conveying device. The device comprises a rack, a circulating chain mechanism is arranged on the rack; the circulating chain mechanism comprises a motor, a driving wheel, a driven wheel and a side bent plate chain; the motor is arranged on the rack and used for driving the driving wheel to rotate; the driving wheel and the driven wheel are respectively mounted at left and right ends of the rack; nails are arranged on the side bent plate chains; the driven wheel is fixedly connected with a rotating shaft; the rack is provided with a sliding groove allowingthe rotating shaft to slide and used for adjusting the distance between the driving wheel and the driven wheel. A sliding block is rotationally connected to the end of the rotating shaft, a sliding rail used for being in sliding connection with the sliding block is arranged in the sliding groove in the length direction, a lead screw in threaded connection with the sliding block is arranged in thesliding groove in a penet