The invention discloses a feeding and discharging
robot mechanical arm of a
punching machine tool, relates to the field of
robot mechanical arms, and solves the problem that when an existing feeding and discharging
robot mechanical arm of the
punching machine tool is used, it is difficult to control the operation state of a suction cup to improve the stability in the conveying process while automatically adsorbing
punching parts of different shapes. Comprising a base and an adsorption mechanism, a mechanical arm body, a rotating block and a
rotating disc are arranged on the base, the adsorption mechanism comprises a control part, a conveying part and multiple sets of suction cups, the control part senses the attaching relation between the suction cups and the surface of a
stamping part, the suction cups in the attaching state are sucked, and the positions of the suction cups in the non-adsorption state are adjusted and controlled; the control part is connected with the suction cup through the conveying part, so that the contact with the surface of the
stamping part is reduced, the influence on the suction conveying stability caused by overlarge thrust of the non-suction suction cup on the
stamping part is avoided, and meanwhile, in the suction operation process of the control part, liquid is output to the side wall of the suction cup in the suction state through linkage of the conveying part, and the stability in the suction conveying process is improved.