Mold arrangement for optodevices

A mold arrangement for molding an optodevice onto an optical fibre ribbon. The mould includes several plates which are intended for insertion between the movable top plate and the stationary bottom plate, or counterpressure plate, of a transfer molding press, and includes an inlet channel, primary and secondary runners, and an optodevice molding cavity which is defined by two of the plates, the mould plates, when the mould is closed, and through which the fibre ribbon extends. Each of the mould plates is provided with respective front and back exchangeable jaws. One jaw of the front jaws is provided in the jaw dividing plane with V-grooves which correspond in number to the number of fibers in the fibre ribbon and in which the optical fibers from which a protective covering material has been stripped are positioned so that their centers lie in the jaw dividing plane. That side of the other jaw which lies proximal to the fibers is provided with a recess in which a pad of soft resilient material is mounted. One jaw of the back jaws is provided in the jaw dividing plane with a recess in which the fibre ribbon is positioned so that the centers of the fibers lie in the jaw dividing plane. The other jaw is provided on that side thereof proximal to the ribbon with a recess in which a pad of soft resilient material is mounted. The pads project beyond the dividing plane of respective jaws and press against and firmly hold the fibre ribbon when the mould is closed.