Automatic disassembling device for material ring

The utility model discloses an automatic dismantling device for a material ring, which comprises a machine table, and a driving assembly, an inner support rotating clamp and a cutting assembly which are arranged on the machine table, the inner support rotating clamp is arranged on the driving assembly, a workpiece is sleeved on the inner support rotating clamp and is fixed by the inner support rotating clamp in an expansion manner, and the cutting assembly is arranged on the machine table. The driving assembly drives the inner support rotating clamp to rotate; according to the utility model, the inner supporting rotary clamp is matched with two cutters at different positions, the inner wall of the material supporting pipe is thinned firstly, and then the material ring is clamped by the manipulator, so that the material ring is disassembled without damage. The inner supporting assembly extends to one side of the cutting part of the material supporting pipe through the pull rod, the problem that the material su