Rail-mounted gantry plate automatic transfer machine

The utility model discloses a rail type gantry sheet automatic transfer machine, which belongs to the field of transfer machines and comprises a supporting unit, the supporting unit comprises a supporting frame, a plurality of storage grooves are arranged at the bottom of the outer side of the supporting frame, supporting legs are rotatably connected to the inner sides of the storage grooves, and grooves are arranged on one sides, close to the storage grooves, of the supporting legs. The inner side of the groove is fixedly provided with a plurality of guide rods, the outer sides of the guide rods are sleeved with first springs, one ends of the first springs are fixedly connected with guide blocks, one sides of the guide blocks are fixedly connected with second springs, one sides of the guide blocks are rotationally connected with supporting rods, and the outer side of the supporting frame is provided with a lifting displacement assembly and a movable clamping unit. The movable clamping unit is used for clampi