Unit for producing an assembly

An apparatus for producing an assembly of filamentary elements wound together in a helix around a central core, the apparatus comprising:

• a twisting device structured to twist a plurality of filamentary elements individually, so that at least a first filamentary element is twisted separately from a second filamentary element, to produce a plurality of twisted filamentary elements that are separate from one another;
• a preforming device arranged downstream of the twisting device, the preforming device being structured to preform each of the twisted filamentary elements individually, so that at least a first twisted filamentary element is preformed separately from a second twisted filamentary element, to produce a plurality of preformed helixes that are separate from one another;
• an assembling device arranged downstream of the preforming device, the assembling device being structured to assemble together the preformed helixes around the central core, to produce the assembly of filamentary elements;
• and
• a central core feeder, arranged upstream of the assembling device, that feeds the central core, which comprises a plurality of textile filamentary elements, to the assembling device,
• wherein where a diameter of each of the plurality of filamentary elements is d, and each of the plurality of preformed helixes has a helix angle α, a helix pitch P, and a helix diameter D, the following conditions are satisfied:
• P=k1×d, where k1=15 to 50,
• D=k2×d, where k2=2 to 5, and
• α is 10° to 25°,
• wherein the assembling device includes a pod arranged downstream of the assembly guide, the pod including a storage device structured to store the assembly of filamentary elements,
• wherein the pod includes a balancer structured to balance the assembly of filamentary elements, the balancer comprising a twister, and
• wherein the pod and the central core feeder rotate synchronously around an axis, extending from the central core feeder to the assembling device, along which the central core feeder feeds the central core.