Paper tube supporting device

The utility model discloses a paper tube supporting device which comprises a first supporting mechanism and a second supporting mechanism, the first supporting mechanism comprises a rack and two supporting frames, the tops of the supporting frames are provided with limiting parts, the limiting parts are used for limiting a first shaft to move in the horizontal direction, and the tops of the limiting parts are open; the second supporting mechanism comprises two supporting arms, the top ends of the supporting arms are provided with limiting grooves used for containing the ends of the first shaft, the tops of the limiting grooves are open, swing arms are arranged at the bottoms of the supporting arms, the middles of the swing arms are hinged to the rack, one ends of the swing arms are hinged to the bottoms of the supporting arms, and a first air cylinder is further arranged on the rack. The first air cylinder comprises a cylinder body and a telescopic rod, the cylinder body is hinged to the rack, the telescopic