Patent classifications
D07B5/007
Cable, strand, and method and device for producing a cable and a strand
The invention relates to a laid cable (1-1b), in particular a laid fiber cable (1-1b) or a laid hybrid cable, comprising at least one core strand or a laid core cable (2-2b) and at least one outer strand (7-7b) surrounding the core strand or the core cable (2-2b), the core strand, the core cable (2-2b) and/or the at least one outer strand is composed of at least one fiber line (9-9b, 10-10b). The at least one fiber line (9-9b, 10-10b) is beneficially made of a composite material having reinforcing fibers (12), the reinforcing fibers (12) of which composite material are laid to form at least one reinforcing line (11). Advantageously, a laid cable which is stable under transverse pressure is provided. The invention also relates to a strand, to a method for manufacturing a cable and a strand, to an apparatus for producing a cable and/or a strand, as well as an apparatus with a drum drive, said apparatus comprising a cable according to the invention.
METHOD FOR PRODUCING LAYERED STEEL CORD
Provided is a method for producing a layered steel cord and belongs to the technical field of steel cord production. The method includes: prestressing some of steel filaments in each layer other than a core wire to obtain prestressed steel filaments; and arranging conventional steel filaments and the prestressed steel filaments in each layer alternately in a stranding machine and performing twisting to obtain the layered steel cord. In the prior art, during the twisting process of a steel cord, due to the residual stress of a steel filament itself and the fluctuation of the tension during the unwinding process, a layered steel cord has a problem of a large interlayer residual stress. The methods controls the stress distribution state of a twisted layered steel cord by prestressing steel filaments, and avoids unflatness of a cord fabric during calendering and warping during cutting in the production process of tires.