CN114280741A - Optical fiber line and manufacturing method thereof - Google Patents

Abstract

The invention discloses an optical fiber line and a manufacturing method thereof, wherein the optical fiber line comprises a wire core and a flexible optical fiber ribbon, the flexible optical fiber ribbon comprises a flexible belt and one or a plurality of wires, the wires are positioned in the flexible belt, and two ends of the wires are respectively matched with two ends of the flexible belt; at least one wire is an optical fiber; the flexible optical fiber ribbon is spirally wound outside the wire core. The optical fiber adopts the flexible belt as a carrier and is spirally wound outside the wire core, so that the bending resistance of the optical fiber can be greatly improved, the optical fiber is prevented from being directly protruded outside the wire core, the lateral pressure resistance and the axial friction resistance of the optical fiber are greatly improved, and the optical fiber is not easy to break in the using process.

Description

Optical fiber line and manufacturing method thereof

Technical Field

The invention relates to the technical field of optical fibers, in particular to an optical fiber wire and a manufacturing method thereof.

Background

Optical fibers are short for optical fibers, and are fibers made of glass or plastic that can be used as a light conducting means. The optical fiber has the advantages of large information capacity, good confidentiality, light weight, small volume, long transmission distance and the like, and is widely applied to the industries of communication, traffic, industry, medical treatment, education, aerospace, computers and the like. The application of optical fibers is bringing about profound influences and changes to human lives. The conventional optical fiber cable generally includes an optical fiber filament (i.e. a bare fiber) and an insulating coating wrapped around the optical fiber filament, and the bending radius (also called bending radius) of the optical fiber filament, i.e. the bending radius of the optical fiber filament, of the optical fiber cable is generally recommended to be about 30 mm. Thus, the conventional optical fiber wire has poor bending resistance. In order to solve the problem that the conventional optical fiber wire is not resistant to bending, some optical fibers are woven, which solves the problem that the optical fiber wire is not resistant to bending, but also has the following problems: the woven optical fiber has too small weaving distance and is difficult to adjust, so that the optical power loss is large. Some adopt spiral winding's mode to optic fibre, this has also solved the problem that traditional optic fibre line is not able to bear or endure to buckle, and winding pitch can be regulated and control, can guarantee that the optical power loss of optic fibre reaches minimum, nevertheless also has following not enoughly: the optical fiber line has weak compression resistance and friction resistance, because the optical fiber is in a sharp shape on the outer side surface of the central line body, and the optical fiber is very fragile, and even if the optical fiber is protected by the outer sheath, the optical fiber is difficult to bear certain lateral pressure or axial friction force, so that the optical fiber is easy to break under compression.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides an optical fiber wire and a manufacturing method thereof, wherein the optical fiber wire has good bending resistance, and is resistant to pressure and friction.

The technical scheme adopted by the invention for solving the technical problems is as follows: the optical fiber line comprises a wire core and a flexible optical fiber ribbon, wherein the flexible optical fiber ribbon comprises a flexible belt and one or a plurality of wires, the wires are positioned in the flexible belt, and two ends of the wires are respectively matched with two ends of the flexible belt; at least one wire is an optical fiber; the flexible optical fiber ribbon is spirally wound outside the wire core.

The protection layer is wrapped outside the wire core and the optical fiber line and comprises any one or more of a sheath, a metal mesh, a fiber mesh and a spraying layer.

Further, the wire core is a flexible wire core, and the wire core comprises a bearing axial core and a core sleeve arranged outside the bearing axial core; the bearing shaft core comprises one or more of nylon yarn, cotton thread, bulletproof yarn, fiber yarn and conductor; the core sleeve is made of metal or nonmetal materials.

Furthermore, the flexible belt is made of soft rubber materials and is manufactured by extrusion molding, and the wire is gradually wrapped in the flexible belt in the extrusion molding process of the flexible belt.

Furthermore, the number of the optical fibers is a plurality, and the optical fibers are distributed in parallel.

Further, the wire extends along the length direction of the flexible belt; and/or the wires are distributed in parallel; and/or the optical fiber is a bare fiber, or the optical fiber comprises a bare fiber and an outer cover wrapped outside the bare fiber.

Furthermore, the number of the wires is a plurality, at least one wire is a conductor, and/or at least one wire is a tensile wire, and the tensile wire comprises a fiber filament.

The invention also provides a manufacturing method of the optical fiber wire, which comprises the following steps:

providing a flexible optical fiber ribbon, wherein the flexible optical fiber ribbon comprises a flexible belt and one or a plurality of wires, the wires are positioned in the flexible belt, and two ends of the wires are respectively matched with two ends of the flexible belt; at least one wire is an optical fiber;

providing a wire core, and spirally winding the flexible optical fiber ribbon outside the wire core.

Further, the method also comprises the following steps:

and providing a protective layer, wherein the protective layer is wrapped outside the cable core and the flexible optical fiber band.

Further, the flexible belt is made of soft rubber materials and is manufactured by adopting an extrusion molding process; the wire is gradually wrapped in the flexible belt in the extrusion molding process of the flexible belt;

and/or the number of the optical fibers is a plurality, and the optical fibers are distributed in parallel;

and/or the number of the wires is a plurality, at least one wire is a conductor, and/or at least one wire is a tensile wire, and the tensile wire comprises a fiber filament;

and/or the wires extend along the length direction of the flexible band; the plurality of wires are distributed in parallel; the optical fiber is a bare fiber, or the optical fiber comprises a bare fiber and an outer cover wrapped outside the bare fiber;

and/or the wire core is a flexible wire core, and the flexible wire core comprises a load-bearing axial core and a core sleeve arranged outside the load-bearing axial core; the bearing shaft core comprises one or more of nylon yarn, cotton thread, bulletproof yarn, fiber yarn and conductor; the core sleeve is made of metal or nonmetal materials.

Compared with the prior art, the invention has the following beneficial effects:

1. at least one wire of the invention is an optical fiber, and the wire adopts a flexible belt as a carrier and is spirally wound outside the wire core, thereby not only greatly improving the bending resistance of the optical fiber, but also avoiding the optical fiber from directly protruding outside the wire core, greatly improving the lateral pressure resistance and the axial friction resistance of the optical fiber, and ensuring that the optical fiber is not easy to break in the using process.

2. The setting of inoxidizing coating can stereotype, protect flexible optical fiber ribbon, also improves pleasing to the eye, the succinct nature of whole outward appearance.

3. The flexible ribbon is made of a soft rubber material and is manufactured by extrusion molding, so that the flexible fiber ribbon is simple in manufacturing process, high in production efficiency and low in cost.

4. The wire core comprises the bearing shaft core and the core sleeve arranged outside the bearing shaft core, so that the bearing capacity of the cable core can be improved, and the bending resistance of the cable core can be improved. And, under the restraint of core cover, flexible optical fiber ribbon is changeed spiral winding, and twines the effect better.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, an optical fiber and a method for manufacturing the same according to the present invention are not limited to the examples.

Drawings

FIG. 1 is a first schematic structural view (embodying a partial, protective layer-free) of the present invention according to an embodiment;

FIG. 2 is a partially enlarged schematic view of FIG. 1 according to an embodiment;

FIG. 3 is a schematic view (in partial section) of a flexible fiber optic ribbon of the present invention according to one embodiment of the present invention, prior to winding;

FIG. 4 is a second schematic structural view (partially shown, including a protective layer) of the first embodiment of the present invention;

FIG. 5 is a schematic view (in partial section) of a second embodiment of a flexible fiber optic ribbon of the present invention prior to winding;

FIG. 6 is a schematic view (in partial section) of a flexible fiber optic ribbon of the present invention according to a third embodiment of the present invention, prior to winding;

fig. 7 is a schematic structural view (in partial section) of a flexible fiber optic ribbon of the present invention prior to winding;

the cable comprises a cable core 1, a cable core 11, a bearing shaft core 12, a core sleeve 2, a flexible optical fiber ribbon 21, a flexible optical ribbon 22, an optical fiber 23, a conductor 24, a tension resisting wire 3 and a sheath.

Detailed Description

Example one

Referring to fig. 1-4, an optical fiber cable of the present invention includes a cable core 1 and a flexible optical fiber ribbon 2, where the flexible optical fiber ribbon 2 includes a flexible ribbon 21 and one or more wires, the wires are located in the flexible ribbon 21 and extend along a length direction of the flexible ribbon 21, and two ends of the wires are respectively fitted at two ends of the flexible ribbon 21, specifically, two ends of the wires may be respectively exposed outside two ends of the flexible ribbon 21, or may be located in two ends of the flexible ribbon 21. When the two ends of the wire are respectively located in the two ends of the flexible belt 21, in the actual application process, the two ends of the flexible belt 21 can be processed, so that the two ends of the wire are respectively exposed. The flexible optical fiber ribbon 2 is spirally wound outside the wire core 1. The flexible belt 21 is made of soft rubber materials and is manufactured by adopting an extrusion molding process, and the wire is gradually wrapped in the flexible belt in the extrusion molding process of the flexible belt 21.

In this embodiment, at least one wire is the optical fiber 22, specifically, the number of the wires is several, and the several wires are distributed in parallel. Since each wire is an optical fiber 22, the number of the optical fibers 22 is several, and the optical fibers 22 are arranged in parallel in the width direction of the flexible tape 21. Specifically, the number of the optical fibers 22 is three, but is not limited thereto. The optical fiber 22 may be a bare fiber or may include a covering (i.e., the optical fiber 22 includes a bare fiber and a covering the bare fiber).

In this embodiment, the wire core 1 is a flexible wire core, and includes a load-bearing axial core 11 and a core sleeve 12 disposed outside the load-bearing axial core 11; the bearing shaft core 11 comprises one or more of nylon yarn, cotton thread, bulletproof yarn, fiber yarn and conductor. The bearing shaft core 11 may be a metal wire and/or a non-metal wire, specifically, the bearing shaft core 11 may include one or more of a conductor, a nylon wire, a cotton wire, a bulletproof wire, a fiber wire, and the like, and when the bearing shaft core 11 includes several of a conductor, a nylon wire, a cotton wire, a bulletproof wire, a fiber wire, and the like, the several are combined into one strand. The bearing shaft core 11 can bear the load and can improve the bending resistance of the invention. The core sleeve 12 may be made of metal or nonmetal. The bearing shaft core can be of a single core type or a multi-core type. In other embodiments, the wire core is a unitary piece and is solid or hollow. The sinle silk can be single core formula, also can be many core formula, promptly the quantity of sinle silk is many, and this many sinle silks 1 is synthesized one bunch.

In this embodiment, the present invention further includes a protective layer, the protective layer wraps the outside of the core 1 and the optical fiber 22, the protective layer includes any one or more of a sheath, a metal mesh, a fiber mesh, and a spray coating layer, and when the protective layer includes several of a sheath, a metal mesh, a fiber mesh, and a spray coating layer, the several are stacked from inside to outside. Specifically, the protective layer is an extruded insulating sheath 3, but is not limited thereto.

In this embodiment, the ratio of the pitch of the optical fiber 22 to the outer diameter of a wire rod obtained by spirally winding the core 1 with the flexible optical fiber ribbon 2 is 4.5-20: 1. Specifically, the thread pitch of the optical fiber 22 is 10-30 mm, and the diameter of the wire is 1.5-4 mm. For example, when the diameter of the wire body made of wire is 4mm, the pitch of the optical fiber 221 is about 18 mm; when the diameter of the wire is 2mm, the pitch of the optical fiber 22 is about 20 mm; when the diameter of the wire is 1.5mm, the winding pitch of the optical fiber 221 is about 30 mm. In this manner, the present invention can ensure that the optical power loss of the optical fiber 22 in the helically wound state is minimized.

Example two

Referring to fig. 5, an optical fiber according to the present invention is different from the first embodiment in that: at least one of the wires is a conductor 23. Specifically, some of the wires are optical fibers 22, and the rest of the wires are conductors 23. The conductor 23 may be a copper wire or other metal wire. The conductor 23 also extends along the length direction of the flexible strip 21, and two ends of the conductor 23 are respectively fitted at two ends of the flexible strip, specifically, two ends of the conductor 23 may be respectively exposed outside two ends of the flexible strip 21, or may be located in two ends of the flexible strip 21. The conductor 23 and the optical fiber 22 are distributed in parallel, so that the photoelectric composite wire is formed; during the extrusion of the flexible tape 21, the optical fibers 22 and the conductors 23 are gradually wrapped by the flexible tape 21.

EXAMPLE III

Referring to fig. 6, an optical fiber according to the present invention is different from the first and second embodiments in that: at least one of the wires is a tensile wire 24. Specifically, some of the wires are the optical fibers 22, and the other wires are the tensile wires 24, the tensile wires 24 also extend along the length direction of the flexible band 21, and two ends of the tensile wires 24 are respectively matched with two ends of the flexible band 21, specifically, two ends of the tensile wires 24 may be respectively exposed out of two ends of the flexible band 21, and may also be located in two ends of the flexible band 21. The tensile cords 24 comprise filaments or the like, which can greatly improve the tensile strength of the flexible fiber optic ribbons of the present invention.

Example four

Referring to fig. 7, an optical fiber according to the present invention is different from the above embodiments in that: at least one of the wires is a tensile wire 24, and at least one of the wires is a conductor 23. Specifically, some of the wires are optical fibers 22, some of the wires are conductors 23, and the rest of the wires are tensile wires 24. The conductor 23 can be a copper wire or other metal wires, the tensile wire 24 comprises fiber wires and the like, and the conductor 23, the tensile wire 24 and the optical fiber 23 are distributed in parallel, so that the photoelectric composite wire with high tensile capacity is formed. In the extrusion molding process of the flexible tape 21, the optical fiber 22, the conductor 23, and the tensile cord 23 are gradually wrapped by the flexible tape 21.

The invention relates to a manufacturing method of an optical fiber wire, which comprises the following steps:

providing a flexible optical fiber ribbon, wherein the flexible optical fiber ribbon comprises a flexible belt and one or a plurality of wires, the wires are positioned in the flexible belt and extend along the length direction of the flexible belt, and two ends of the wires are respectively matched with two ends of the flexible belt; at least one wire is an optical fiber;

providing a wire core, and spirally winding the flexible optical fiber ribbon outside the wire core;

and providing a protective layer, wherein the protective layer is wrapped outside the cable core and the flexible optical fiber band.

In the embodiment, the flexible belt is made of a soft rubber material and is manufactured by adopting an extrusion molding process, and the wire is gradually wrapped in the flexible belt in the extrusion molding process of the flexible belt; the protective layer comprises any one or more of a sheath, a metal mesh, a fiber mesh and a spraying layer, and when the protective layer comprises the sheath, the metal mesh, the fiber mesh and the spraying layer, the protective layer and the spraying layer are mutually overlapped from inside to outside. Specifically, the protective layer is an extruded insulating sheath, but is not limited thereto.

In this embodiment, the number of the optical fibers is several, and the optical fibers are distributed in parallel along the width direction of the flexible band. The optical fiber may be a bare fiber or may have a coating (i.e., the optical fiber includes a bare fiber and a coating covering the bare fiber). In other embodiments, the number of the wires is several, at least one wire is a conductor, and/or at least one wire is a tensile wire, the conductor may be a copper wire or other metal wires, and the tensile wire includes a fiber wire and the like.

In this embodiment, the wire core includes a load-bearing axial core and a core sleeve disposed outside the load-bearing axial core; the bearing shaft core comprises one or more of nylon yarn, cotton thread, bulletproof yarn, fiber yarn and conductor. The bearing shaft core can be a metal wire and/or a non-metal wire, specifically, the bearing shaft core can comprise one or more of a conductor, nylon yarn, cotton yarn, bulletproof yarn, fiber yarn and the like, and when the bearing shaft core comprises several of the conductor, the nylon yarn, the cotton yarn, the bulletproof yarn, the fiber yarn and the like, the several are synthesized into a strand. The bearing shaft core can bear the load and can improve the bending resistance of the bearing shaft core. The core sleeve can be made of metal or nonmetal materials. The bearing shaft core can be of a single core type or a multi-core type. In other embodiments, the wire core is a unitary piece and is solid or hollow. The sinle silk can be single core type, also can be many core types, promptly the quantity of sinle silk is many, and this many sinle silks are synthetic and are a bundle.

According to the optical fiber wire and the manufacturing method thereof, the optical fiber adopts the flexible belt as the carrier and is spirally wound outside the wire core, so that the optical fiber is also in a spirally wound state, the bending resistance of the optical fiber can be greatly improved, the optical fiber can be prevented from being directly protruded outside the wire core, the lateral pressure resistance and the axial friction resistance of the optical fiber are greatly improved, and the optical fiber is not easy to break in the using process. The setting of inoxidizing coating can stereotype, protect flexible optical fiber ribbon, also improves pleasing to the eye, the succinct nature of whole outward appearance. The flexible ribbon is made of a soft rubber material and is manufactured by extrusion molding, so that the flexible fiber ribbon has the advantages of simple process, high production efficiency and low cost.

The optical fiber and the manufacturing method thereof have the same or can be realized by adopting the prior art.

The above embodiments are only used to further illustrate the optical fiber and the method for making the same of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. An optical fiber line, including the sinle silk, its characterized in that: the flexible optical fiber ribbon comprises a flexible belt and one or a plurality of wires, wherein the wires are positioned in the flexible belt, and two ends of the wires are respectively matched with two ends of the flexible belt; at least one wire is an optical fiber; the flexible optical fiber ribbon is spirally wound outside the wire core.

2. The fiber optic line of claim 1, wherein: the protective layer is wrapped outside the wire core and the optical fiber line and comprises any one or more of a sheath, a metal mesh, a fiber mesh and a spraying layer.

3. The fiber optic line of claim 1, wherein: the cable core is a flexible cable core and comprises a bearing axial core and a core sleeve arranged outside the bearing axial core; the bearing shaft core comprises one or more of nylon yarn, cotton thread, bulletproof yarn, fiber yarn and conductor; the core sleeve is made of metal or nonmetal materials.

4. The fiber optic line of claim 1, wherein: the flexible belt is made of soft rubber materials and is manufactured by extrusion molding, and the wire is gradually wrapped in the flexible belt in the extrusion molding process of the flexible belt.

5. The fiber optic line of claim 1, wherein: the number of the optical fibers is a plurality, and the optical fibers are distributed in parallel.

6. The fiber optic line of claim 1, wherein: the wire extends along the length direction of the flexible belt;

and/or the wires are distributed in parallel;

and/or the optical fiber is a bare fiber, or the optical fiber comprises a bare fiber and an outer cover wrapped outside the bare fiber.

7. The fiber optic line of any one of claims 1-6, wherein: the number of the wires is a plurality, at least one wire is a conductor, and/or at least one wire is a tensile wire; the tensile cords comprise filaments.

8. A manufacturing method of an optical fiber wire is characterized in that: the method comprises the following steps:

providing a flexible optical fiber ribbon, wherein the flexible optical fiber ribbon comprises a flexible belt and one or a plurality of wires, the wires are positioned in the flexible belt, and two ends of the wires are respectively matched with two ends of the flexible belt; at least one wire is an optical fiber;

providing a wire core, and spirally winding the flexible optical fiber ribbon outside the wire core.

9. The method for manufacturing an optical fiber according to claim 8, wherein: further comprising the steps of:

and providing a protective layer, wherein the protective layer is wrapped outside the cable core and the flexible optical fiber band.

10. The method for manufacturing an optical fiber according to claim 8, wherein:

the flexible belt is made of soft rubber materials and is manufactured by adopting an extrusion molding process; the wire is gradually wrapped in the flexible belt in the extrusion molding process of the flexible belt;

and/or the number of the optical fibers is a plurality, and the optical fibers are distributed in parallel;

and/or the number of the wires is a plurality, at least one wire is a conductor, and/or at least one wire is a tensile wire, and the tensile wire comprises a fiber filament;

and/or the wires extend along the length direction of the flexible belt, and the wires are distributed in parallel; the optical fiber is a bare fiber, or the optical fiber comprises a bare fiber and an outer cover wrapped outside the bare fiber;

and/or the wire core is a flexible wire core, and the flexible wire core comprises a load-bearing axial core and a core sleeve arranged outside the load-bearing axial core; the bearing shaft core comprises one or more of nylon yarn, cotton thread, bulletproof yarn, fiber yarn and conductor; the core sleeve is made of metal or nonmetal materials.

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