Ring cutting machine feeding arm device

The utility model discloses a ring cutting machine feeding arm device, and relates to the field of machinery, in particular to the technical field of the manufacturing of a feeding arm of a piston ring cutting machine. The feeding 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; a guiding mounting plate is connected onto the sliding rails in a matched mode; the sliding cylinder is fixed to the upper end of the mounting plate; the free end of a piston rod of the sliding cylinder is fixedly connected to the upper end of the guiding mounting plate; the longitudinal pushing cylinder is fixed to the lower part of the guiding mounting plate; the pneumatic claw is fixedly connected to the pushing end of the longitudinal pushing cylinder; three mounting blocks are respectively arranged on the pneumatic claw; an elongated slot is formed in each mounting block; a catch nail is detachably connected into each elongated slot. The feeding arm is simple in structure, convenient to control through program, high in degree of automation and high in efficiency.