Hinge structure capable of being rotated up and down

The invention discloses a hinge structure capable of being rotated up and down. The hinge structure capable of being rotated up and down comprises a main conveying track, a first rotating track, a first rotating shaft, a second rotating track, a second rotating shaft, a third rotating track, a supporting frame and an extending track, wherein the first rotating shaft and the second rotating shaft are vertically arranged in a rotating mode correspondingly, and a movable support is further installed at the lower end of the second rotating shaft. According to the hinge structure, the first rotating track and the second rotating track cooperate, so that the extending direction of the third rotating track on the horizontal plane can be freely adjusted, and the third rotating track can extend inany perpendicular direction; in this way, the first rotating track cooperates with the second rotating track and the third rotating track, so that the three-dimensional angle adjustment of a materialin a material conveying di