CN105632645A - Photoelectric composite cable with compact structure - Google Patents
Photoelectric composite cable with compact structure Download PDFInfo
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- CN105632645A CN105632645A CN201610159424.1A CN201610159424A CN105632645A CN 105632645 A CN105632645 A CN 105632645A CN 201610159424 A CN201610159424 A CN 201610159424A CN 105632645 A CN105632645 A CN 105632645A
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- support body
- optical fiber
- peripheral support
- cable
- oversheath
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4434—Central member to take up tensile loads
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the technical field of cables, and particularly relates to a photoelectric composite cable with a compact structure. The photoelectric composite cable comprises a plurality of optical fibers, a reinforcing element, an outer sheath, a central support body, a peripheral support body and a plurality of connecting strips, wherein the plurality of connecting strips connect the central support body and the peripheral support body; the connecting strips, an external space of the central support body and an internal space of the peripheral support body form a plurality of fiber accommodating cavities; optical fibers are located in the fiber accommodating cavities; the outer sheath is located outside the peripheral support body; and the reinforcing element is located in the outer sheath or located between the peripheral support body and the outer sheath. The invention further discloses a manufacturing method of the photoelectric composite cable. The composite cable has the main beneficial effects of being relatively compact in structure, relatively small in boundary dimension, relatively low in cost and relatively high in compression resistance/impact resistance/bending resistance. The manufacturing method disclosed by the invention is simple and easy to master; the production speed is low; the power consumption is low; and the process cost is low.
Description
The application is that name is called: the photoelectric comprehensive cable of a kind of compact construction and making method thereof, the applying date are: on 06 26th, 2014, application number be: point case application of the patent of invention of 201410293715.0.
Technical field
The invention belongs to technical field of cables, the photoelectric comprehensive cable of especially a kind of compact construction.
Background technology
The contemporary society of communication industry develop rapidly, people are constant all the time trend for lowizationer of miniaturization and the cost more of optical, electrical cable structure, but, under the background of miniaturization, every performance of optical, electrical cable still needs to meet the requirement of national standard/industry standard, could ensure the normal use of user like this; For this reason, huge challenge is brought to manufacturers.
Domestic following patent is mainly contained for miniaturization, the research of optical, electrical cable that simplifies the structure:
Publication number is CN101393310A, the applying date is the Chinese patent of 2008.11.05, discloses a kind of optical fibre band optical cable, and it is at least made up of obturator, fibre ribbon, protective layer and sheath; Fibre ribbon around and be coated on outside obturator, protective layer 5 around and be coated on outside fibre ribbon, sheath is coated on outside protective layer; Obturator is single root club-shaped material or composite structure; Fibre ribbon at least comprises 6 optical fiber; Optical fiber is by being positioned at the fibre core at center, the covering being positioned at outside fibre core, the coat being positioned at outside covering and the pigmented layer being positioned at outside coat or tight sleeve layer forms; Protective layer is any one that block water in band, water blocking yarn, aluminium band, steel band, glass filament reinforced plastics band, aramid yarn; The material of sheath is plastics; This patent greatly reduces the occupancy of space resources, significantly reduces raw-material consumption, it is evident that saved cost, reduces the spending of user, simplifies the operation of production, reduces the input of production unit. Due to the close together between optical fiber adjacent in fibre ribbon, and the matrix material of fibre ribbon itself is cured resin, being mainly ultraviolet-curing resin, ultraviolet-curing resin has lower folding performance, therefore, fibre ribbon is very easily separated in coated process, causes " loose fine " of appellation in the industry, although loose fibre does not affect optical communication performance, but make the fibre ribbon can not whole welding, namely can not use optical-fiber strip welding machine, and common heat sealing machine can only be used, the progress obviously have impact on construction, continuing.
Publication number is CN103295675A, the applying date is the Chinese patent of 2013.06.08, discloses a kind of cable with simple structure and manufacture method thereof, and it is made up of many conductors, the restrictive coating that enveloped by conductor; Between two conductors of arbitrary neighborhood, there is restrictive coating material; On the cross section of cable, the edge of any conductor is all positioned within the border of restrictive coating; Described many conductors are along restrictive coating distribution, and do not contact between any two conductors; This patent has following main useful effect: product structure is simpler, cost is lower, manufacture more easily, manufacture in equipment investment less. It adopts insulation core wire or directly conductor is put into sheath, due to much bigger the size of the heart yearn of cable compares optical fiber, and as the compatible extreme difference of the material of polyethylene kind and optical fiber, cable polyethylene material generally presents alkalescence, optical fiber can be corroded quickly, make that optical fiber coloring layer fades fast, fibercuts, the communication that affects optical fiber; Therefore, this patent can not be applied by optical cable technology.
Publication number is CN103105658A, the applying date is the Chinese patent of 2013.03.13, discloses a kind of Simple type optical cable structure, and it comprises skeleton body, be positioned at the stiffener of skeleton body central authorities; Skeleton body periphery is made up of multiple bone leaf, has the fine chamber of the appearance that can hold photoconductive fiber in each bone leaf; The periphery holding fine chamber does not contact with stiffener; Described cable configuration is integrally formed; This patent structure is simple, it is possible in the sheath operation once shaped that optical cable is produced, greatly reduces operation quantity, it is not necessary to extrude the skeleton grooves of skeleton cable, does not also need the SZ stranding device of layer-twisted type cable; It has following main useful effect: structure is simple, and equipment investment is few, easy to identify, and weight is light, and cost is low. Although the optical cable in this patent reaches the simple object of structure, but, photoconductive fiber is spuious distribution in bone leaf, therefore the scantlings of the structure of optical cable is bigger, cost is higher; In addition, only having skeleton body outside optical fiber, therefore, optical cable is hit, compression energy is poor.
Therefore, expect to occur that more compact structure, physical dimension are less, cost is lower in industry, more can by the optical cable pressed, more can bend, more can be hit and photoelectric comprehensive cable.
Summary of the invention
In order to solve the problem, it is an object of the invention to disclose the photoelectric comprehensive cable of a kind of compact construction, disclose its making method further, they realize by the following technical solutions.
In the invention process example 1 to embodiment 6 and embodiment 8, the photoelectric comprehensive cable of a kind of compact construction, it includes many optical fiber 1, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and the many connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms the fine chamber 5 of multiple appearance, optical fiber is arranged in and holds fine chamber, outside oversheath is positioned at peripheral support body, strengthen element in oversheath or between peripheral support body and oversheath.
In the invention process example 7, the photoelectric comprehensive cable of a kind of compact construction, it includes many optical fiber 1, the many insulation wires 9 for telecommunication, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and the many connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms the fine chamber 5 of multiple appearance, optical fiber is arranged in and holds fine chamber, insulation wire for telecommunication is arranged in the fine chamber of the appearance not identical with optical fiber, outside oversheath is positioned at peripheral support body, strengthen element in oversheath or between peripheral support body and oversheath.
The photoelectric comprehensive cable of any one compact construction described above, it is characterised in that described reinforcement element is aramid yarn or glass fiber yarn or steel wire or copper bar or fiberglass-reinforced plastic lever.
The photoelectric comprehensive cable of any one compact construction described above, it is characterised in that each top holding fine chamber described has a groove 8, on arbitrary cross section, each groove be fan-shaped and the axis in excessively corresponding appearance fibre chamber, the summit of this sector.
The photoelectric comprehensive cable of any one compact construction described above, it is characterised in that the described fine chamber of each appearance width radially can only hold 1��2 optical fiber.
The photoelectric comprehensive cable of any one compact construction described above, it is characterized in that described all fine chamber interior edge radially that holds are circumferentially same, the fine chamber of all appearances outer rim radially is also circumferentially same, the radius of interior edge be R1, outer rim radius be R2, the diameter of simple optical fiber be D, R1, R2 and D meet: D < (R2-R1) < (2 �� D).
The photoelectric comprehensive cable of any one compact construction described above, it is characterised in that described optical fiber is single-mode fiber or multimode optical fibers.
The photoelectric comprehensive cable of any one compact construction described above, it is characterised in that the fine chamber of described central support, peripheral support body, connecting strip, appearance is integrally formed, and is formed by extrusion molding by plastic extrusion machine head; The material of main part of described central support, peripheral support body, connecting strip is all polybutylene terephthalate or polypropylene.
The photoelectric comprehensive cable of any one compact construction described above, it is characterised in that the material of described oversheath is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or polyvinyl chloride or low smoke and zero halogen polyethylene or low-smoke low-halogen polyethylene.
The comprehensive cable of the present invention has following main useful effect: more compact structure, physical dimension are less, cost is lower, carrying capacity/impact/bending property is stronger.
The photoelectric comprehensive cable of a kind of compact construction of the present invention, it adopts following method to be made:
The first step: install secondary coated extruded mould step: the forming mould of formation central support, peripheral support body, connecting strip is arranged on plastic extrusion machine head, and matrix material or polypropylene are placed in plastics extruder carry out fusing to be extruded, the fine pin of leading passed through by the insulation wire making optical fiber/be used for telecommunication is arranged on forming mould rear, and makes to lead fine pin and wear in the fine hole, chamber of appearance corresponding to forming mould; Described matrix material comprises the raw material filled a prescription by following weight part: commercially available optical cable polybutylene terephthalate 1 part, model are AX8000 or model is the commercially available toughner of BT108Z: polybutylene terephthalate weight 2.5��4.8%, model be the anti UV agent of PBT1731: the 1.0��2.5% of polybutylene terephthalate weight;
2nd step: install optical fiber/for the insulation wire step of telecommunication: by optical fiber/be arranged on pay-off unit for the insulation wire of telecommunication, and each holds the optical fiber in fine chamber/wear in the fine hole, chamber of the appearance described in the first step and through extrusion head by the insulation wire of optical fiber/be used for telecommunication for the quantity of insulation wire of telecommunication, color and sequence requirement by optical cable;
3rd step: extrusion molding and distraction step: output extruding machine and matrix material or polypropylene are extruded from forming mould front, insulation wire by the optical fiber in the 2nd step/be used for telecommunication draws together into hot water tank simultaneously, form central support, peripheral support body, connecting strip and hold fine chamber, the interior space of the external space of connecting strip, central support, peripheral support body is formed and holds fine chamber, and optical fiber/for the insulation wire of telecommunication is arranged in and holds fine chamber and form extrusion molding body; The fine chamber of each appearance width radially can only hold 1 optical fiber, the fine chamber of all appearances interior edge radially is circumferentially same, the fine chamber of all appearances outer rim radially is also circumferentially same, the radius of interior edge be R1, outer rim radius be R2, the diameter of simple optical fiber be D, R1, R2 and D meet: D < (R2-R1) < (2 �� D); The traction of extrusion molding body is entered cold rinse bank cooling, then adopts online blowing drying installation to make extrusion molding soma dry, then form cable core on dish tool;
4th step: strengthen element and oversheath forming step: the mould core that gained cable core in the 3rd step is passed sheath extruding machine, and place outside cable core and strengthen element and carry out oversheath extrusion molding, by reinforcement element being coated in oversheath or is coated on by reinforcement element between peripheral support body and oversheath, namely obtain the photoelectric comprehensive cable of compact construction; The material of described oversheath is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or polyvinyl chloride or low smoke and zero halogen polyethylene or low-smoke low-halogen polyethylene; Described reinforcement element is aramid yarn or glass fiber yarn or steel wire or copper bar or fiberglass-reinforced plastic lever.
Certainly, when the material of central support described above, peripheral support body, connecting strip is matrix material, can to add model be AX8000 or model be the commercially available toughner of BT108Z and model is the anti UV agent of PBT1731, and the weight of toughner account for polybutylene terephthalate weight 2.5��4.8%, anti UV agent account for the 1.0��2.5% of polybutylene terephthalate weight; Through test, this kind of formula does not need to change the complete processing of original polybutylene terephthalate, and can greatly increase central support, peripheral support body, the toughness of connecting strip and anti-ultraviolet property, the cable core produced is placed on applicant location, shine under the daylight in August and within continuous 20 days, have no cable core cracking, and the cable core not adding above-mentioned anti UV agent is placed on applicant location, shines under the daylight in August and within continuous 5 days, just see to ftracture in cable core many places; The cable core that this kind of formula is produced, when bearing overload pressure 100%, clear-cutting forestland original state in 1 hour, and do not adopt the cable core that this fills a prescription, when bearing overload pressure 50%, in 48 hours, do not recover original state yet, it is exactly adopt the formula of prior art after overload pressure or impact yet, the long-term interruption of opticfiber communication may be caused, and the meeting of the application recovers within a short period of time.
Simply, easily grasp, and production rate is fast, little power consumption, technique cost are low for the making method of the present invention.
Accompanying drawing explanation
Fig. 1 is the perspective view after one section of stripping of the invention process example 1.
Fig. 2 is the cross-sectional structure schematic diagram that Fig. 1 amplifies.
Fig. 3 is the perspective view after one section of stripping of the invention process example 2.
Fig. 4 is the cross-sectional structure schematic diagram that Fig. 3 amplifies.
Fig. 5 is the perspective view after one section of stripping of the invention process example 3.
Fig. 6 is the cross-sectional structure schematic diagram that Fig. 5 amplifies.
Fig. 7 is the perspective view after one section of stripping of the invention process example 4.
Fig. 8 is the cross-sectional structure schematic diagram that Fig. 7 amplifies.
Fig. 9 is the cross-sectional structure schematic diagram of the invention process example 5.
Figure 10 is the perspective view after one section of stripping of the invention process example 6.
Figure 11 is the cross-sectional structure schematic diagram that Figure 10 amplifies.
Figure 12 is the perspective view after one section of stripping of the invention process example 7.
Figure 13 is the cross-sectional structure schematic diagram that Figure 12 amplifies.
Figure 14 is the perspective view after one section of stripping of the invention process example 8.
Figure 15 is the cross-sectional structure schematic diagram that Figure 14 amplifies.
Figure 16 is the structural representation after Figure 15 removal unit divides optical fiber.
Embodiment
Embodiment 1
Ask for an interview Fig. 1 and Fig. 2, the photoelectric comprehensive cable of a kind of compact construction, it includes 9 optical fiber 1, strengthens element 6, oversheath 7, it is characterized in that 9 connecting strips 3 that it also includes central support 2, peripheral support body 4 and is connected with peripheral support body by central support, the external space of connecting strip, central support, the interior space of peripheral support body form 9 and hold fine chamber 5, optical fiber is arranged in and holds fine chamber and each holds fine chamber width radially and can only hold 1 optical fiber, outside oversheath is positioned at peripheral support body, strengthen element between peripheral support body and oversheath.
Embodiment 2
Ask for an interview Fig. 3 and Fig. 4, the photoelectric comprehensive cable of a kind of compact construction, it includes 9 optical fiber 1, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and 9 connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms 9 and holds fine chamber 5, optical fiber is arranged in and holds fine chamber and each holds fine chamber width radially and can only hold 1 optical fiber, outside oversheath is positioned at peripheral support body, strengthen element and it is arranged in oversheath, and reinforcement element is 2, it is distributed in oversheath symmetrically.
Embodiment 3
Ask for an interview Fig. 5 and Fig. 6, the photoelectric comprehensive cable of a kind of compact construction, it includes 9 optical fiber 1, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and 9 connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms 9 and holds fine chamber 5, optical fiber is arranged in and holds fine chamber and each holds fine chamber width radially and can only hold 1 optical fiber, outside oversheath is positioned at peripheral support body, strengthen element and it is arranged in oversheath, and reinforcement element is 4, it is distributed in oversheath symmetrically.
Certainly, the reinforcement element in embodiment 2,3 also can be other many, it is possible to symmetrical ground or be asymmetricly distributed in oversheath.
Further, the reinforcement element in embodiment 2,3 can also be that peripheral support body is close at edge, can make that the thickness of oversheath is less like this, optical cable entire outer diameter is thinner, cost is lower.
Further, the reinforcement element in embodiment 2,3 should be not less than 0.4mm from the minor increment at oversheath edge, can ensure that optical cable has more excellent performance in alternating bending and torsion like this.
Embodiment 4
Ask for an interview Fig. 7 and Fig. 8, the photoelectric comprehensive cable of a kind of compact construction, it includes 12 optical fiber 1, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and 12 connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms 12 and holds fine chamber 5, optical fiber is arranged in and holds fine chamber and each holds fine chamber width radially and can only hold 1 optical fiber, outside oversheath is positioned at peripheral support body, strengthen element between peripheral support body and oversheath.
Embodiment 5
Ask for an interview Fig. 9, and with reference to figure 7 and Fig. 8, the photoelectric comprehensive cable of a kind of compact construction, it includes 24 optical fiber 1, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and 12 connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms 12 and holds fine chamber 5, optical fiber is arranged in and holds fine chamber and each holds fine chamber width radially and can only hold 2 optical fiber, outside oversheath is positioned at peripheral support body, strengthen element between peripheral support body and oversheath.
Embodiment 6
Ask for an interview Figure 10 and Figure 11, the photoelectric comprehensive cable of a kind of compact construction, it includes 9 optical fiber 1, strengthens element 6, oversheath 7, it is characterized in that 9 connecting strips 3 that it also includes central support 2, peripheral support body 4 and is connected with peripheral support body by central support, the external space of connecting strip, central support, the interior space of peripheral support body form 9 and hold fine chamber 5, optical fiber is arranged in and holds fine chamber and each holds fine chamber width radially and can only hold 1 optical fiber, outside oversheath is positioned at peripheral support body, strengthen element between peripheral support body and oversheath; Each top holding fine chamber has a groove 8, on arbitrary cross section, each groove be fan-shaped and the axis in excessively corresponding appearance fibre chamber, the summit of this sector.
The fine chamber of appearance in embodiment 1 to embodiment 6 is symmetrical in optical cable, naturally it is also possible to asymmetric distribution.
Embodiment 7
Ask for an interview Figure 12 and Figure 13, the photoelectric comprehensive cable of a kind of compact construction, it includes 4 optical fiber 1, 5 insulation wires 9 for telecommunication, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and 5 connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms 5 and holds fine chamber 5, optical fiber is arranged in and holds fine chamber and the fine chamber of appearance that each places optical fiber width radially and can only hold 1 optical fiber, insulation wire for telecommunication is arranged in the fine chamber of the appearance not identical with optical fiber, outside oversheath is positioned at peripheral support body, strengthen element between peripheral support body and oversheath, each top holding fine chamber has a groove 8, on arbitrary cross section, each groove be fan-shaped and the axis in excessively corresponding appearance fibre chamber, the summit of this sector, often thoroughly do away with edge wire 9 to be made up of conductor 91 and the insulation layer 92 that envelopes conductor, the chamber more fine than the appearance placing optical fiber, the fine chamber of appearance placing the insulation wire being used for telecommunication is big.
Embodiment 8
Ask for an interview Figure 14 to Figure 16, the photoelectric comprehensive cable of a kind of compact construction, it includes 16 optical fiber 1, strengthen element 6, oversheath 7, it is characterized in that it also includes central support 2, peripheral support body 4 and 4 connecting strips 3 that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms 4 and holds fine chamber 5, optical fiber is arranged in and holds fine chamber and the fine chamber of appearance that each places optical fiber width radially and can only hold 1 optical fiber, each appearance is placed with 4 optical fiber in fine chamber, outside oversheath is positioned at peripheral support body, strengthen element between peripheral support body and oversheath, the described fine chamber of all appearances interior edge radially is circumferentially same, the fine chamber of all appearances outer rim radially is also circumferentially same, the radius of interior edge be R1, outer rim radius be R2, the diameter of simple optical fiber be D, R1, R2 and D meet: D < (R2-R1) < (2 �� D).
In this embodiment, it is also possible to holding in fine chamber at each and place many optical fiber, the quantity holding fine chamber is also not limited to 4, also can be other multiple; Further, hold in fine chamber and can also place fibre ribbon, fibre ribbon comprises many optical fiber, the phenomenon of such fibre ribbon cracking in CN101393310A can be overcome like this, make construction, welding more convenient.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, it is characterised in that described reinforcement element is aramid yarn or glass fiber yarn or steel wire or copper bar or fiberglass-reinforced plastic lever.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, it is characterized in that the top in the described fine chamber of each appearance can have a groove, on arbitrary cross section, each groove be fan-shaped and the axis in the excessively corresponding fine chamber of appearance, the summit of this sector.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, it is characterised in that the described fine chamber of each appearance width radially can only hold 1��2 optical fiber.
Further, the photoelectric comprehensive cable of a kind of compact construction described above, when the fine chamber of each appearance width radially can only hold 1 optical fiber, it is characterized in that described all fine chamber interior edge radially that holds are circumferentially same, the fine chamber of all appearances outer rim radially is also circumferentially same, the radius of interior edge be R1, outer rim radius be R2, the diameter of simple optical fiber be D, R1, R2 and D meet: D < (R2-R1) < (2 �� D).
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, it is characterised in that described optical fiber is single-mode fiber or multimode optical fibers.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, it is characterised in that the fine chamber of described central support, peripheral support body, connecting strip, appearance is integrally formed, and is formed by extrusion molding by plastic extrusion machine head; The material of described central support, peripheral support body, connecting strip is all polybutylene terephthalate or polypropylene.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, it is characterised in that the material of described oversheath is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or polyvinyl chloride or low smoke and zero halogen polyethylene or low-smoke low-halogen polyethylene.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned embodiment 1 to embodiment 6 and embodiment 8, it can comprise other many optical fiber, other many connecting strips, the fine chamber of other multiple appearance.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned embodiment 7, it can comprise other many optical fiber, other many connecting strips, other multiple appearance fine chamber, other the many insulation wires for telecommunication.
The photoelectric comprehensive cable of a kind of compact construction described in above-mentioned arbitrary embodiment, strengthening element can in oversheath or between peripheral support body and oversheath.
In the present invention, owing to strengthening the existence of element so that optical cable can bear bigger pressure, i.e. resistance to compression ability is stronger, meanwhile, strengthens element and impact can be played shock absorption, and therefore, optical cable impact resistance is stronger.
In the present invention, due to the existence of oversheath so that optical cable can bear bigger pressure, i.e. resistance to compression ability is stronger, and meanwhile, impact can be played shock absorption by oversheath, and therefore, optical cable impact resistance is stronger; Reinforcement element and oversheath make the optical cable of the present invention have wider environmental adaptation scope relative to documents, try out through external client, at outdoor temperature from the country of-50��85 DEG C of natural trend, use 1 year continuously, do not produce the phenomenon of signal interruption, and optical cable of the prior art can only be suitable for the scope of-40��70 DEG C.
Compared with prior art, external diameter reduces by 25��43%, and therefore, cost also significantly reduces, and produces a desired effect in the present invention, and through the inspection of cable inspection center of the Ministry of Information industry, properties of optical fiber cable meets whole regulations of YD/T769-2010 completely.
The invention process example 7 is placed the insulation wire being used for telecommunication, is that the demand in order to meet external client carries out, its objective is transmission weak electric signal, mainly monitoring and phone signal, it is not necessary to other light device conversion machine.
In comprehensive cable of the present invention, it is also possible to fill the materials such as greasy for preventing water, water-proofing powder, water blocking yarn in the fine chamber of appearance, optical fiber is made to corrode from moisture content or slow down moisture content erosion action.
The making of comprehensive cable of the present invention, does not need the stranded equipment of SZ, it is not necessary to fibre bundle wrapping equipment, and it is quite convenient therefore to make, and equipment investment is lower.
Therefore, the comprehensive cable of the present invention has following main useful effect: more compact structure, physical dimension are less, cost is lower, carrying capacity/impact/bending property is stronger.
The photoelectric comprehensive cable of a kind of compact construction of the present invention, it adopts following method to be made:
The first step: install secondary coated extruded mould step: the forming mould of formation central support, peripheral support body, connecting strip is arranged on plastic extrusion machine head, and matrix material or polypropylene are placed in plastics extruder carry out fusing to be extruded, the fine pin of leading passed through by the insulation wire making optical fiber/be used for telecommunication is arranged on forming mould rear, and makes to lead fine pin and wear in the fine hole, chamber of appearance corresponding to forming mould; Described matrix material comprises the raw material filled a prescription by following weight part: commercially available optical cable polybutylene terephthalate 1 part, model are AX8000 or model is the commercially available toughner of BT108Z: polybutylene terephthalate weight 2.5��4.8%, model be the anti UV agent of PBT1731: the 1.0��2.5% of polybutylene terephthalate weight;
2nd step: install optical fiber/for the insulation wire step of telecommunication: by optical fiber/be arranged on pay-off unit for the insulation wire of telecommunication, and each holds the optical fiber in fine chamber/wear in the fine hole, chamber of the appearance described in the first step and through extrusion head by the insulation wire of optical fiber/be used for telecommunication for the quantity of insulation wire of telecommunication, color and sequence requirement by optical cable;
3rd step: extrusion molding and distraction step: output extruding machine and matrix material or polypropylene are extruded from forming mould front, insulation wire by the optical fiber in the 2nd step/be used for telecommunication draws together into hot water tank simultaneously, form central support, peripheral support body, connecting strip and hold fine chamber, the interior space of the external space of connecting strip, central support, peripheral support body is formed and holds fine chamber, and optical fiber/for the insulation wire of telecommunication is arranged in and holds fine chamber and form extrusion molding body; The fine chamber of each appearance width radially can only hold 1 optical fiber, the fine chamber of all appearances interior edge radially is circumferentially same, the fine chamber of all appearances outer rim radially is also circumferentially same, the radius of interior edge be R1, outer rim radius be R2, the diameter of simple optical fiber be D, R1, R2 and D meet: D < (R2-R1) < (2 �� D); The traction of extrusion molding body is entered cold rinse bank cooling, then adopts online blowing drying installation to make extrusion molding soma dry, then form cable core on dish tool;
4th step: strengthen element and oversheath forming step: the mould core that gained cable core in the 3rd step is passed sheath extruding machine, and place outside cable core and strengthen element and carry out oversheath extrusion molding, by reinforcement element being coated in oversheath or is coated on by reinforcement element between peripheral support body and oversheath, namely obtain the photoelectric comprehensive cable of compact construction; The material of described oversheath is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or polyvinyl chloride or low smoke and zero halogen polyethylene or low-smoke low-halogen polyethylene; Described reinforcement element is aramid yarn or glass fiber yarn or steel wire or copper bar or fiberglass-reinforced plastic lever.
Certainly, when the material of central support described above, peripheral support body, connecting strip is matrix material, can to add model in commercially available polybutylene terephthalate be AX8000 or model be the commercially available toughner of BT108Z and model is the anti UV agent of PBT1731, and the weight of toughner account for polybutylene terephthalate weight 2.5��4.8%, anti UV agent account for the 1.0��2.5% of polybutylene terephthalate weight; Through test, this kind of formula does not need to change the complete processing of original polybutylene terephthalate, and can greatly increase central support, peripheral support body, the toughness of connecting strip and anti-ultraviolet property, the cable core produced is placed on applicant location, shine under the daylight in August and within continuous 20 days, have no cable core cracking, and the cable core not adding above-mentioned anti UV agent is placed on applicant location, shines under the daylight in August and within continuous 5 days, just see to ftracture in cable core many places; The cable core that this kind of formula is produced, when bearing overload pressure 100%, clear-cutting forestland original state in 1 hour, and do not adopt the cable core that this fills a prescription, when bearing overload pressure 50%, in 48 hours, do not recover original state yet, it is exactly adopt the formula of prior art after overload pressure or impact yet, the long-term interruption of opticfiber communication may be caused, and the meeting of the application recovers within a short period of time.
Certainly, above-mentioned formula can be applied in above-mentioned arbitrary embodiment completely; Certainly, the material of central support, peripheral support body, connecting strip can be commercially available polybutylene terephthalate, it is preferable that model be PBT3013,61008, PBT-280.
Simply, easily grasp, and production rate is fast, little power consumption, technique cost are low for the making method of the present invention.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be implemented to use by other various forms, and they drop in protection scope of the present invention equally.
Claims (5)
1. the photoelectric comprehensive cable of a compact construction, it includes many optical fiber, the many insulation wires for telecommunication, strengthen element, oversheath, it is characterized in that it also includes central support, peripheral support body and the many connecting strips that central support is connected with peripheral support body, connecting strip, the external space of central support, the interior space of peripheral support body forms the fine chamber of multiple appearance, optical fiber is arranged in and holds fine chamber, insulation wire for telecommunication is arranged in the fine chamber of the appearance not identical with optical fiber, outside oversheath is positioned at peripheral support body, strengthen element in oversheath or between peripheral support body and oversheath, the raw material that the material of described central support, peripheral support body, connecting strip is all polypropylene or fills a prescription by following weight part: commercially available optical cable polybutylene terephthalate 1 part, model are AX8000 or model is the commercially available toughner of BT108Z: polybutylene terephthalate weight 2.5��4.8%, model be the anti UV agent of PBT1731: the 1.0��2.5% of polybutylene terephthalate weight, described reinforcement element is aramid yarn or glass fiber yarn or steel wire or copper bar or fiberglass-reinforced plastic lever, each top holding fine chamber described has a groove, on arbitrary cross section, each groove be fan-shaped and the axis in excessively corresponding appearance fibre chamber, the summit of this sector, the described fine chamber of each appearance width radially can only hold 1��2 optical fiber, the described fine chamber of all appearances interior edge radially is circumferentially same, the fine chamber of all appearances outer rim radially is also circumferentially same, the radius of interior edge be R1, outer rim radius be R2, the diameter of simple optical fiber be D, R1, R2 and D meet: D < (R2-R1) < (2 �� D).
2. the photoelectric comprehensive cable of a kind of compact construction according to claim 1, it is characterised in that the model of described commercially available optical cable polybutylene terephthalate is PBT3013 or 61008 or PBT-280.
3. according to the photoelectric comprehensive cable of a kind of compact construction according to claim 1 or claim 2, it is characterised in that described optical fiber is single-mode fiber or multimode optical fibers.
4. according to the photoelectric comprehensive cable of claim 1 or claim 2 or a kind of compact construction according to claim 3, it is characterized in that the fine chamber of described central support, peripheral support body, connecting strip, appearance is integrally formed, and formed by extrusion molding by plastic extrusion machine head.
5. the photoelectric comprehensive cable of a kind of compact construction according to claim 4, it is characterised in that the material of described oversheath is Low Density Polyethylene or medium-density polyethylene or high density polyethylene(HDPE) or flame-proof polyethylene or polyvinyl chloride or low smoke and zero halogen polyethylene or low-smoke low-halogen polyethylene.
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105572828B (en) | 2018-08-24 |
| CN104076461A (en) | 2014-10-01 |
| CN104076461B (en) | 2016-08-24 |
| CN105632645B (en) | 2017-11-10 |
| CN105572828A (en) | 2016-05-11 |
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