Tape winding type optical unit optical cable and manufacturing process thereof

Abstract

The invention discloses a tape winding type optical unit optical cable and a manufacturing process thereof. The tape winding type optical unit optical cable comprises an optical unit and an outer sleeve layer, wherein the optical unit comprises a tape winding type optical fiber tape and an aramid fiber at the center, wherein a water-resisting material, a ribbon and a sleeve sequentially cover the tape winding type optical fiber tape. The manufacturing process comprises the following steps: 1, manufacturing a plurality of optical fibers into the optical fiber tape by a tape combining mold; 2, winding the optical fiber tape into a closed ring through a U-shaped molding trumpet mold and forming an optical fiber column by a sizing mold; covering the water-resisting material and binding the ribbon, and putting the optical fiber column into the sleeve to form the optical unit; and 3, preparing a tape winding type central pipe optical cable or a layer hinged type optical cable, and arranging a tape combining resin pressing-in pipe on the tape combining mold, wherein the optical fiber difference between the layers of the optical fiber column is 6, the outer diameter of the optical fiber column with 6-90 cores is 636-2332 microns and the layer quantity is 1-5, and the diameter of the prepared optical unit is 1.4-4.8mm. The sleeve has a smaller diameter and the prepared optical cable has light weight and small diameter; the bending radius of the prepared optical cable is small and the construction and pavement are easy; the net-shaped optical cable tape can be in primary fusion welding and the construction is convenient.

Description

technical field [0001] The invention relates to a roll-type optical fiber ribbon cable and a manufacturing process of the optical unit cable. Background technique [0002] With the continuous development of urban construction and communication construction, the optical fibers required for optical cables are getting larger and larger. Generally, 245μm optical fibers are used for large-core optical cables with 144 cores and 12 cores per tube. One-to-one butt joint of optical fibers is usually connected to the 144-core optical cable connector, which takes several hours of construction time, and the optical cable structure is also relatively large, which is time-consuming and laborious to install and lay. With the development of communication construction, people have developed optical fiber ribbon cables, and at the same time developed an optical fiber fusion splicer, which can splice all the optical fibers of an optical fiber ribbon at one time, which makes the fusion of l...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of urban construction and communication construction, the optical fibers required for optical cables are getting larger and larger. Generally, 245μm optical fibers are used for large-core optical cables with 144 cores and 12 cores per tube. One-to-one optical fiber connection, often connected to the 144-core optical cable connector, takes several hours of construction time, and the optical cable structure is also relatively large, which is time-consuming and laborious to install and lay.

With the development of communication construction, people have developed optical fiber ribbon cables, and at the same time developed an optical fiber fusion splicer, which can splice all the optical fibers of an optical fiber ribbon at one time, which makes the fusion of large-core optical cables convenient, but this The optical fiber ribbon cable also has its defects, because the optical fiber ribbon cable is to bond several optical fibers together with a special resin to form an encapsulated or bonded optical fiber ribbon with specifications such as 4, 6, 8, 12, 24, etc., and then several optical fibers The optical fiber ribbon is placed in the sleeve at the same time, and one sleeve is made into a central tube optical cable or a layer-twisted optical fiber ribbon cable is made after twisting multiple sleeves. Since the optical fiber ribbon is arranged in a rectangular or rhombus shape in the sleeve, the rhomboid optical fiber is easy to Extruding with the inner wall of the casing produces a high loss point, so the diameter of the inner tube is often made larger, and the bending radius of the optical fiber ribbon is required to be larger, and the optical fiber ribbon cable produced in this way often has a relatively large structure and self-weight. During urban pipeline construction and laying Due to its weight, it is difficult to lay it, and fiber breakage accidents often occur due to the small bending radius during the construction process.

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