Roller supporting device

The invention discloses a roller supporting device comprising a fixed base, a conical block arranged on the fixed base, a movable base, two oblique blocks arranged on the movable base, a supporting seat arranged on the movable base and used for supporting a roller, and a lead screw mechanism used for driving the conical block to move up and down, wherein the oblique blocks are arranged on the leftand right sides of the conical block and can move up and down relative to the conical block. According to the roller supporting device, the fixed base is mounted on the ground or other crossbeams andvertical columns, the two oblique blocks move up and down under rotating driving of lead screws, and thus the lifting adjusting function is achieved; the roller supporting seat can be conveniently demounted and mounted, and the situation that the limited production pace is occupied by the idle roller supporting seat is avoided; after the roller is used temporarily, the movable base, the two oblique blocks, the lead screw