Online inner burr cutting off machine of high-frequency longitudinal welded pipe production line

The utility model discloses an online inner burr cutting off machine of a high-frequency longitudinal welded pipe production line. The online inner burr cutting off machine comprises a machine frame, a lower cutter is fixed on the front portion of the machine frame, a left clamping plate and a right clamping plate are fixed at the rear end of the machine frame, a cutter rod hinged to the two clamping plates through a rotating shaft is arranged between the two clamping plates, an upper cutter is fixed on the cutter rod, the upper cutter and the lower cutter form a shear structure, the rear end of the upper cutter is hinged to a rod of a main oil cylinder which is mounted on the machine frame, the main oil cylinder is vertically arranged and connected with a horizontal auxiliary oil cylinder, and the rotating shaft is located at the rear end of the cutter rod. The online inner burr cutting off machine can be used for automatically cutting off burrs in various steel pipes on the production line, replaces manual