Ground rail trolley for feeding

The ground rail trolley comprises a machine table, a paper stack, a feeder head and a paper feeding mechanism, and further comprises a paper feeding unit, a feeding unit, a feeding unit, a conveying unit, a feeding unit and a discharging unit, and the paper feeding unit is located below the machine table and used for conveying the paper stack; the positioning units are adjustably mounted on the two sides of the machine table respectively; wherein the pair of positioning units is positioned between the paper feeding unit and the paper feeding structure and is used for limiting the placement position of a paper stack; the pair of fixed blocks are fixedly mounted on one side of the machine table respectively; the sliding rods are arranged in the fixing blocks in a sliding and sleeved mode respectively; the two ends of the positioning plate are fixedly connected between one ends of the pair of sliding rods; the paper stacking device further comprises a pair of threaded rods, the threaded rods penetrate through th