Ring cutting machine unloading arm device

The utility model discloses a ring cutting machine unloading arm device, and relates to the field of machinery, in particular to the technical field of the manufacturing of an unloading arm of a piston ring cutting machine. The unloading arm comprises a mounting plate, a sliding cylinder, a longitudinal pushing cylinder and a pneumatic claw, wherein sliding rails are arranged on the mounting plate; the sliding cylinder is arranged on the sliding rails in a matched mode; a guiding mounting plate is fixedly connected onto the sliding cylinder; the longitudinal pushing cylinder is fixed onto the guiding mounting plate; the pneumatic claw is fixedly connected to the pushing end of the longitudinal pushing cylinder; two horizontal mounting blocks are connected onto the pneumatic claw; the two horizontal mounting blocks respectively stretch out of the pneumatic claw; elongated slots are respectively formed in the two horizontal mounting blocks; a catch nail is detachably connected into each elongated slot respectively; the sliding cylinder is a rodless cylinder. The unloading arm is simple in structure, convenient to control through program, high in degree of automation and high in efficiency.