Mechanical arm for buckling and device for buckling

The invention relates to a mechanical arm for buckling. The mechanical arm comprises a mechanical arm body and a clamp body, wherein the clamp body is connected with the tail end of the mechanical arm body; the clamp body comprises a central clamping jaw part and a peripheral buckling part; the peripheral buckling part comprises a buckling driving piece, a connecting piece and M buckling arms, and M is an integer greater than or equal to 2; the M buckling arms are respectively arranged at the periphery of the connecting piece; the connecting piece comprises a grabbing connecting surface and a mechanical arm connecting surface which are parallel to each other; the central clamping jaw part is arranged on the grabbing connecting surface and used for grabbing a piece to be buckled; and the buckling driving piece provides buckling force perpendicular to the grabbing connecting face for the M buckling arms. According to the mechanical arm provided by the invention, automatic buckling of an air conditioner grille a