Laser cutting device for automobile exhaust pipe

The utility model belongs to the technical field of cutting devices, and particularly relates to an automobile exhaust pipe laser cutting device which comprises a laser cutting machine body, a limiting connecting frame is arranged on one side of the laser cutting machine body, and the limiting connecting frame is fixedly connected to the top of an operation table of the laser cutting machine body. A through hole is formed in the limiting connecting frame, first arc-shaped limiting plates are symmetrically and rotationally connected into the through hole, second arc-shaped limiting plates are symmetrically arranged between the two symmetrically-arranged first arc-shaped limiting plates, and the second arc-shaped limiting plates are rotationally connected with the through hole. A mounting groove is formed in the first arc-shaped limiting plate, and a plurality of conveying balls are arranged in the mounting groove; the whole pipe body can only move in the conveying direction in the cutting process, the position