Liquid crystal glass substrate centering and positioning device

The utility model discloses a liquid crystal glass substrate centering and positioning device which comprises a base, side fixing blocks fixedly connected with the base, sliding grooves formed in the side fixing blocks, a sliding block connected between the two side fixing blocks in a sliding mode, a motor fixedly connected with the base, a reciprocating lead screw fixedly connected with the output end of the motor, and a vertical plate fixedly connected with the sliding block. The vertical plate is fixedly connected with a bottom plate, the bottom plate is rotatably connected with a wheel frame body through a rotating shaft, the wheel frame body is rotatably connected with a wheel shaft, and the wheel shaft is located in the wheel frame body and sleeved with a wheel. The side edge of the liquid crystal glass is safer due to reduction of friction force in the positioning process through the arrangement of the wheels, and a space is reserved when the side edge of the liquid crystal glass is uneven through the