An apparatus for the series production of Moebius ribbons comprises a threading robot having its four degrees of freedom (X,Y,Z,R). A second robot, movable in one direction, with two degrees of freedom (Z',R') is mounted on the first robot. The two robots cooperate to transfer between them a ribbon of delicate material, the ribbon being extracted from the ribbon cartridge and imparted with the 180.degree. twist required for the manufacturing of the Moebius ribbon.