Method and apparatus for applying flat ribbons about a...

Details Method and apparatus for applying flat ribbons about a... Method and apparatus for applying flat ribbons about a...

D - Textiles, Paper

01

H

D01H 13/04 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2157171

Flat filaments (12) are deflected by a system of sheaves (30, 32) to converge the filaments (12) to closing stations proximate to points at which the filaments are tangentially applied to helical surfaces of a central cylindrical core member (14). Successive sets of filament deflection sheaves (30, 32) stack the filaments into bundles which can be separated by spacer elements (24) which are applied to a smooth core or the filaments can be inserted into helical grooves in the core. Preferably, adjacent filaments forming each stack are guided to prevent contact until just prior to application in the core. The apparatus can be used to produce optical fiber cables, high pressure flexible composite pipes and the like. Different numbers of filament units can be stacked in one or more of the filament bundles.

Des filaments plats sont défléchis par un système de poulies (30, 32) qui les font converger vers des postes de fermeture proche de points où ils sont appliqués tangentiellement aux surfaces hélicoïdales de noyaux cylindriques (14). Des jeux successifs de poulies de déflexion (30, 32) empilent les filaments en faisceaux qui peuvent être séparés par des éléments intercalaires (24) disposés sur des noyaux lisses ou insérés dans des rainures hélicoïdales pratiquées dans les noyaux. Les filaments adjacents constituant les faisceaux sont de préférence guidés de façon à prévenir tout contact avant leur application sur les noyaux. L'appareil peut servir à la fabrication de câbles en fibres optiques ou de tuyaux composites souples pour hautes pressions et équivalent. Les faisceaux de filaments peuvent comprendre des filaments provenant de plusieurs unités de filaments.

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