Disclosure of Invention
The invention aims to solve the technical problem that a non-bundled branch optical cable easy to peel and a preparation method thereof are adopted, conventional optical cable raw materials are adopted, no bundled yarn exists on the outer surface of a cable core by improving a production process and a forming method, the optical cable is manufactured by an improved sheath machine head and a forming process, the cable core is fixedly formed by a water-blocking tape when an outer sheath is formed and contracted, the cable core has no bundled yarn, a sleeve can automatically scatter after the cable core is peeled off, the sleeve can be peeled off at a color strip part, the optical cable sheath can be torn by bare hands, optical fibers can be conveniently led out, and the structure is flexible. The optical cable is free of metal band armoring, light in weight, low in cost, excellent in mechanical property and environmental property, fast and convenient to construct, and capable of effectively overcoming a plurality of defects in the prior art.
The invention is realized by the following technical scheme: an easily-stripped non-bundled yarn branch optical cable comprises an optical cable prepared by adopting a layer-stranding structure, wherein the optical cable comprises optical fibers, a water-blocking material, loose tubes, a reinforcing piece and an outer sheath, more than one strand of optical fibers are arranged in the loose tubes, and each loose tube is filled with a fiber paste;
the water-blocking material comprises water-blocking yarns and water-blocking tapes, more than one loose tube and more than one optical fiber form a cable core, and the cable core is fixedly formed by the water-blocking tapes when the outer sheath is formed and contracted;
the two sides of the outer jacket, which are positioned in the water blocking tape and the cable core, are provided with reinforcing parts arranged along the length direction of the optical cable, the color strip jacket material is extruded through the plastic extruding machine on the outer jacket surface outside the reinforcing parts, and the outer jacket between the color strip jacket material and the reinforcing parts forms a layer of stripping layer.
According to the preferable technical scheme, a plurality of water-blocking yarns are arranged in the middle of the cable core, and the water-blocking yarns and the water-blocking tape are used as longitudinal water-blocking materials of the optical cable together.
As a preferable technical scheme, the loose tube material is made of an oil-resistant, solvent-resistant and chemical corrosion-resistant high polymer material.
Preferably, the reinforcing part is a metal reinforcing part, a non-metal plastic reinforcing rod or other reinforcing materials.
As a preferred technical scheme, the outer sheath is made of polyethylene, flame retardant materials or other high polymer materials.
According to the preferable technical scheme, the optical cable is in a semi-dry structure or a full-dry structure according to the water-blocking material in the sleeve.
A preparation method of an easily stripped non-binding yarn branch optical cable comprises the following steps:
firstly, manufacturing a sleeve containing an optical communication unit, and extruding an optical fiber, a water-blocking material and a high polymer material into a single sleeve through an extrusion molding process;
step two, according to the difference of communication bandwidth and optical fiber model and type, the outer diameter of the sleeve is between 2.0mm and 12.0 mm;
step three, according to the requirement of communication capacity, the sleeves with different colors and corresponding quantity are paid out through a sleeve pay-off rack under constant tension;
step four, paying out the reinforcing piece and the water blocking yarns through paying-off equipment, setting paying-off tension, and enabling all the sleeves to pass through SZ stranding platform equipment, wherein the sleeves are uniformly distributed in the stranding platform as much as possible;
and step five, enabling all the sleeves, the water-blocking tape, the water-blocking yarns and the reinforcing parts to penetrate through a machine head of an extruding machine, designing a corresponding extruding mold, uniformly extruding and wrapping the color strip materials and the sheath materials around the tensile element through an extruding process, cooling and forming through a water tank, and drying through a dryer to obtain the easily stripped non-bundled yarn branch optical cable.
The invention has the beneficial effects that:
1. the cable core does not use binding yarns, and the bundle tube does not have binding marks;
2. the cable core is not filled with factice, so that the subsequent construction is facilitated;
3. the optical cable is not armored by a metal belt, so that the weight is light and the cost is low;
4. the surface of the sheath of the reinforcement is provided with the color strip sheath material, so that the stripping is convenient, and the sheath of the optical cable can be torn by bare hands;
5. the SZ twisting mode is adopted, the sleeve can be separated easily after the cable core is stripped, and the skylight opening mode can be adopted to find the required sleeve and lead out the optical fiber, so that the effect of easy branching is achieved;
6. the cabling procedure and the sheath procedure are produced together, so that the production time and the production cost of the product are saved;
7. most production processes are the same as the conventional processes, but the difference is that after SZ is twisted and molded, the water-blocking tape is quickly and longitudinally wrapped and sent to a machine head for molding.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
As shown in fig. 1, the easily stripped non-bundled optical fiber branch cable of the present invention includes an optical fiber prepared by adopting a layer-stranding structure, the optical fiber includes an optical fiber 1, a water-blocking material, loose tubes 3, a reinforcement 4 and an outer sheath 8, more than one optical fiber 1 is arranged in the loose tubes 3, and each loose tube 3 is filled with a fiber paste 2, the optical fiber may be a semi-dry structure or a full-dry structure;
the water-blocking material comprises water-blocking yarns 6 and water-blocking tapes 7, more than one loose tube 3 and more than one strand of optical fibers 1 form a cable core, when the outer sheath 8 is formed and contracted, the cable core is fixedly formed through the water-blocking tapes 7, the cable core has no binding yarns, and after the cable core is stripped, the tubes can be automatically dispersed;
the two sides of the water-blocking tape 7 and the cable core in the outer sheath 8 are provided with reinforcing pieces 4 distributed along the length direction of the optical cable, and the two reinforcing pieces are distributed on the two sides of the outer sheath in the embodiment; all extrude various strip sheath material 5 through the extruding machine on 8 faces of oversheath in the 4 outsides of reinforcement, every reinforcement all corresponds a various strip sheath material, oversheath 8 between various strip sheath material 5 and the reinforcement 4 forms one deck peel ply, the very thin of peel ply can be between 0.3 ~ 0.5mm in this embodiment, when needs are peeled off, because the sheath material of various strip department is very thin, constructor can be like "shelling the banana", bare-handed optical cable sheath of tearing.
The number of the optical fibers can be put according to actual requirements, the optical fibers need to be colored for distinguishing and distinguishing the optical fibers, and when the number of the optical fibers is more than 12, the optical fibers can be distinguished by adopting the color ring optical fibers, so that the number and the density of the optical fibers are improved, sufficient bandwidth access requirements are provided, and the production cost is reduced; the oil-resistant, solvent-resistant and chemical corrosion-resistant high polymer material is adopted as the material of the loose tube 3, so that the loose tube has good stability and excellent mechanical property, and meanwhile, the fiber paste 2 or the water-blocking yarn is added into the loose tube 3 as a water-blocking substance, so that all optical fibers in the loose tube 3 are protected to the maximum extent.
The material of the reinforcing element 4 can be selected from metal material, non-metal plastic reinforced rod or other similar materials. It has the advantages of high modulus, corrosion resistance, high mechanical strength, etc. 2 or 4 reinforcing parts 4 are parallelly arranged on two sides of the cable core wrapped with the water blocking tape 7 to provide necessary protection for the cable core. Meanwhile, the tensile property of the whole optical cable is supported. One to two water-blocking yarns 6 are added in the middle of the cable core and are used as longitudinal water-blocking materials of the optical cable together with a water-blocking tape 7, and finally polyethylene, flame-retardant materials or other high polymer materials are extruded outside the cable core to serve as a protective layer outer sheath 8, so that the protection of the optical cable is enhanced. And on the surface of the outer sheath 8, a special plastic extruding machine is used for extruding the color strip sheath material 5, so that the optical cable can be conveniently stripped at the position of the color strip sheath material 5 by constructors.
When the optical cable needs to branch off the optical fibers at the middle position and the whole optical cable does not need to be cut off, the mode of opening a skylight can be adopted, the sheath material is cut off at the middle position of the 2 color strips, the internal cable core is exposed, and the required sleeve is found and the optical fibers are led out because the cable core is not bundled by binding yarns. The optical cable has the advantages of flexible structure, no metal tape armor, light weight, low cost, excellent mechanical property and environmental property, and quick and convenient construction.
The preparation method comprises the following steps:
firstly, manufacturing a sleeve containing an optical communication unit, and extruding an optical fiber, a water-blocking material and a high polymer material into a single sleeve through an extrusion molding process; according to different communication bandwidths and optical fiber models and types, the outer diameter of the sleeve is 2.0-12.0 mm; according to the requirement of communication capacity, the sleeves with different colors and corresponding quantity are paid out through a sleeve pay-off rack under constant tension; paying out the reinforcing piece and the water-blocking yarns through paying-off equipment, setting paying-off tension, and enabling all the sleeves to pass through SZ stranding platform equipment, wherein the sleeves are uniformly distributed in a stranding platform as much as possible; all the sleeves, the water-blocking tapes, the water-blocking yarns and the reinforcing parts pass through a machine head of an extruding machine, a corresponding extruding mold is designed, the color bar materials and the sheath materials are uniformly extruded and wrapped around the tensile element at the same time through an extruding process, and then are cooled and formed through a water tank and dried by a dryer to manufacture the easily stripped non-bundled yarn branch optical cable.
Compared with the production process of the common layer stranded optical cable, the invention reduces the cabling procedure, and improves the production efficiency by molding the corresponding raw materials at one time through the special plastic extruding machine head by the SZ stranding platform.
Example 2
As shown in fig. 2, the present embodiment has the same structure as that of embodiment 1, except that the number of the reinforcing members is increased, two reinforcing members are provided on each side, and the number of the reinforcing members is not particularly limited, and may be three or more.
The invention has the beneficial effects that:
1. the cable core does not use binding yarns, and the bundle tube does not have binding marks;
2. the cable core is not filled with factice, so that the subsequent construction is facilitated;
3. the optical cable is not armored by a metal belt, so that the weight is light and the cost is low;
4. the surface of the sheath of the reinforcement is provided with the color strip sheath material, so that the stripping is convenient, and the sheath of the optical cable can be torn by bare hands;
5. the SZ twisting mode is adopted, the sleeve can be separated easily after the cable core is stripped, and the skylight opening mode can be adopted to find the required sleeve and lead out the optical fiber, so that the effect of easy branching is achieved;
6. the cabling procedure and the sheath procedure are produced together, so that the production time and the production cost of the product are saved;
7. most production processes are the same as the conventional processes, but the difference is that after SZ is twisted and molded, the water-blocking tape is quickly and longitudinally wrapped and sent to a machine head for molding.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.