CN105759383A - Multilayer skeleton slot optical cable and manufacturing method thereof - Google Patents
Multilayer skeleton slot optical cable and manufacturing method thereof Download PDFInfo
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- CN105759383A CN105759383A CN201610240228.7A CN201610240228A CN105759383A CN 105759383 A CN105759383 A CN 105759383A CN 201610240228 A CN201610240228 A CN 201610240228A CN 105759383 A CN105759383 A CN 105759383A
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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
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
- G02B6/4433—Double reinforcement laying in straight line with optical transmission element
-
- 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
-
- 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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- 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
- G02B6/4479—Manufacturing methods of optical 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
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4489—Manufacturing methods of optical cables of central supporting members of lobe structure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Communication Cables (AREA)
Abstract
The invention provides a multilayer skeleton slot optical cable, the optical cable comprises a reinforcer, a most inner side skeleton and outer side skeletons, the reinforcer is arranged on the center of the multilayer skeleton slot optical cable, the most inner side skeleton is formed on the outside of the reinforcer, and a plurality of skeleton slots for placing optical fiber ribbons are arranged on the most inner side skeleton; more than one of outer side skeletons are arranged from inside to outside in sequence and uses the reinforcer as a center, and a plurality of skeletons for placing optical fiber ribbons are arranged on more than one of outer side skeletons; the most inner side skeleton and outer walls of more than one of outer side skeletons are coated by protective layers comprising at least metal tapes, and the outer side skeletons are formed on the metal tapes; and the protective layer of the most outer side skeleton is coated by a protective sleeve layer. According to the above structure, the density of the optical fiber is increased, reasonable intervals between skeleton slots on each layer of skeleton are ensured, the extra large number of cores and the small external diameter of the optical cable are realized, the structure is simple, the production efficiency is high, and the mechanical properties including pulling resistance, side pressing resistance and the like are good.
Description
Technical field
The present invention relates to a kind of optical cable, specifically, relate to a kind of multilamellar skeleton slot type optical cable with multilamellar framing structure and manufacture method thereof.
Background technology
Along with the development of domestic (intelligent acess) FTTx, the demand of 576 cores, 864 cores and above super high fiber count cable is increasing.Central tube type optical cable is by only having a beam tube to be limited in the middle of it, and central tube type optical cable is difficult to accomplish super large core number, and conventional Loose tube layer-twisted type high fiber count cable and monoskeleton high fiber count cable can not meet the FTTx demand requiring that optical fiber dutycycle is high.And in super large core number, the weight of layer-stranding cable external diameter and optical cable itself increases substantially, the mechanical performance such as tension, lateral pressure resistant is good not, and along with the increase (during more than 12) of stranded beam tube quantity, the mode of 12 color chromatograph identification beam tubes also brings along no small difficulty to construction.And skeleton high fiber count cable is because of its structure, itself there are good tension, lateral pressure resistant performance, it is also easier to realize super large core number, but the skeleton grooves of current single monolayer, accomplish super large core number, skeleton grooves number can be a lot, skeleton grooves number is when more than 15, skeleton operation extrusion skeleton grooves is yielding, there is hidden danger of quality, and in order to ensure that skeleton grooves has enough intensity, to maintain a certain distance between adjacent two skeleton grooves, along with increasing of skeleton grooves number, the external diameter of monolayer skeleton grooves there is also the obvious situation of increase.
Therefore, domestic large core number, super high fiber count cable application limited relatively big, the optical cable diversification of demand, large core number overall situation under, it is necessary to the high fiber count cable of a kind of simple in construction.
Summary of the invention
The invention provides a kind of multilamellar skeleton slot type optical cable and manufacture method thereof, there is multilamellar framing structure, solve the problems such as monolayer skeleton slot type optical cable intensity difference, external diameter when super large core number are big.
A kind of multilamellar skeleton slot type optical cable provided by the invention, including: reinforcement, it is positioned at the central part of described multilamellar skeleton slot type optical cable；The most inboard skeleton, is formed in the outside of described reinforcement, and on the most inboard described skeleton, distribution has multiple multiple skeleton grooves placing fibre ribbon；The more than one outer side skeleton from inside to outside set gradually centered by described reinforcement, more than one, on outer side skeleton, distribution has multiple multiple skeleton grooves placing fibre ribbon；More than the most inboard described skeleton and one on the outer wall of outer side skeleton, it is coated with the protective layer including at least metal tape, described metal tape is formed described outer side skeleton；The protective layer of outermost described skeleton is coated with restrictive coating.
Moreover it is preferred that described skeleton grooves along its length twist or SZ shape distribution.
Moreover it is preferred that skeleton grooves is the straight trough along fiber length.
Moreover it is preferred that described protective layer also includes being located at the waterstop inside described metal tape.
Moreover it is preferred that identify skeleton grooves by the graticule on the skeleton rib of skeleton grooves both sides, wherein, having the skeleton grooves having two graticules on the rib of a graticule opposite side on the rib of side is No. 1 groove, from No. 1 groove, along the direction from a graticule to two graticules, it it is sequentially each skeleton grooves, wherein, at interval of 5 skeleton grooves, on the rib after skeleton grooves, from a graticule, in the way of a cumulative graticule gradually, identify skeleton grooves.
The manufacture method of a kind of multilamellar skeleton slot type optical cable provided by the invention, comprises the following steps: 1) utilize the outside of extrusion moulding method center reinforcement to form the most inboard skeleton with multiple skeleton grooves；2) in multiple skeleton grooves of the most inboard described skeleton, fibre bundle is placed respectively；3) on the most inboard skeleton wrapped metal tape and form protective layer；4) outside described metal tape, extrusion moulding method is utilized to form the outer side skeleton with multiple skeleton grooves；5) in multiple skeleton grooves of described outer side skeleton, place fibre bundle respectively, then wrapped metal tape and form protective layer；6) repeat described 4), 5) step sequentially forms skeleton grooves structure outside the multilamellar of from inside to outside stacking；7) outside the protective layer of outermost outer side skeleton, restrictive coating it is coated with.
Multilamellar skeleton slot type optical cable according to said structure, improves the density of optical fiber, and while achieving super large core number, its cable outer diameter is smaller.
Accompanying drawing explanation
By embodiment being described in conjunction with accompanying drawings below, the features described above of the present invention and technological merit will become apparent with easy to understand.
Fig. 1 is the cross-sectional view of the monolayer skeleton slot type optical cable according to prior art；
Fig. 2 is the cross-sectional view of multilamellar skeleton slot type optical cable according to embodiments of the present invention；
Fig. 3 is the manufacturing flow chart of multilamellar skeleton slot type optical cable according to embodiments of the present invention；
Fig. 4 is the schematic perspective view of SZ shape skeleton grooves structure according to embodiments of the present invention.
Detailed description of the invention
The embodiment of multilamellar skeleton slot type optical cable of the present invention is described below with reference to the accompanying drawings.Those of ordinary skill in the art will be consequently realised that, when without departing from the spirit and scope of the present invention, it is possible to various different modes or its combination, described embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than are used for limiting scope of the claims.Additionally, in this manual, accompanying drawing draws not in scale, and identical accompanying drawing labelling represents identical part.
The present embodiment provides a kind of multilamellar skeleton slot type optical cable; include the multilamellar bar shaped skeleton being arranged concentrically and be positioned at the reinforcement of frame center; the outer wall of every layer of skeleton is coated with protective layer; outermost protective layer is coated with restrictive coating; wherein; on the excircle of every layer of skeleton, distribution has multiple skeleton grooves, is placed with one or more fibre ribbon in each skeleton grooves, and wherein each fibre ribbon is made up of multifiber again.Described protective layer can be coated on the waterstop outside skeleton, and waterstop has water-resisting ability, and coiling is closely not loose, and described protective layer also includes the metal tape being coated on outside waterstop.
Fig. 2 is the cross-sectional view of multilamellar skeleton slot type optical cable according to an embodiment of the invention.Fig. 2 is with 6 core optic fibre belt optics, and 696 core bilayer skeleton slot type optical cables are example, and this optical cable includes the two-layer skeleton grooves cable configuration being arranged concentrically, respectively skeleton grooves optical cable 2 and skeleton grooves optical cable 3.Being reinforcement 21 at the center of skeleton, reinforcement 21 can be individual wire or many braided wires, skeleton and reinforcement are combined together to form entirety.The most inboard skeleton grooves cable configuration is formed from the outside successively skeleton 22 of reinforcement 21, fibre ribbon 23, waterstop 24.This is the skeleton grooves cable configuration commonly used in prior art.Because wanting extrusion molding second layer skeleton, therefore, on the outer wall of the most inboard skeleton when wrapped waterstop, need further around wrapping metal tape 25, during to ensure the most inboard skeleton cable core as core extrusion molding second layer skeleton, the space that will not cause the fibre ribbon that internal layer entered groove because extrusion molding pressure is big is squeezed, the abnormal conditions such as cause optical fiber index bad.As can be seen from Figure 2, on the outer circumference surface of metal tape 25, extrusion molding second layer skeleton 32 is continued using the most inboard skeleton cable core as center, form the base structure of second layer skeleton grooves optical cable, in second layer skeleton grooves, continue to lay fibre ribbon 33, outer wall at skeleton 32 is coated with waterstop 34, metal tape 35 successively again, the present embodiment is two-layer framing structure, is therefore coated with restrictive coating 4 in the outside of the metal tape 35 in the outside being coated on second layer skeleton, forms two-layer skeleton slot type cable configuration.
The structure of the skeleton grooves optical cable of the present embodiment is specifically described below in conjunction with Fig. 2, in Fig. 2, fibre ribbon used is 6 core optic fibre belt optics, on the most inboard skeleton 2, there are 5 skeleton grooves, wherein lay 6 core optic fibre belt optics in each skeleton grooves, wherein lay 4 group of 6 core optic fibre belt optic in each skeleton grooves, in each skeleton grooves, lay 24 optical fiber, therefore, the most inboard skeleton is laid 120 optical fiber altogether.And on second layer skeleton, owing to the external diameter of its skeleton increases, therefore the quantity of skeleton grooves can be more than the skeleton grooves of the most inboard skeleton.In Fig. 2, second layer skeleton has 12 skeleton grooves, wherein lays 6 core optic fibre belt optics in each skeleton grooves, lays 48 optical fiber in each skeleton grooves altogether, therefore lays 576 optical fiber on second layer skeleton.Therefore the multilamellar skeleton slot type optical cable of the present embodiment has 696 optical fiber altogether, and the external diameter of its optical cable is within 22mm.The quantity of the skeleton grooves of each casing play is merely illustrative of describing above, and the quantity of skeleton grooves can be arranged according to number of fibers.It is above for two-layer skeleton slot type optical cable, but the invention is not limited in this.After one layer of skeleton of every extrusion molding, all can be coated with waterstop and metal tape, so that the structure of multilamellar skeleton slot type optical cable has the mechanical performances such as better tension, anti-pressure measurement.
The multilamellar skeleton cable that the present embodiment is formed is as in figure 2 it is shown, utilize and overcome the shortcoming that monolayer super large core number skeleton cable inner framework space is bigger, by the cable configuration of multilamellar skeleton so that density of optic fibre increases, the satisfactory mechanical property such as tension, lateral pressure resistant.When making full use of the good mechanical properties such as skeleton cable tension, lateral pressure resistant, further increase the density of optical fiber, it is achieved that the purpose of super large core number.
Additionally, skeleton grooves along its length can twist or the distribution of SZ shape, wherein, SZ shape skeleton grooves is to have helicla flute much in opposite direction along fiber length, and the hand of spiral of skeleton grooves is in periodically change.As shown in Figure 4, namely the position of arrow T indication is the reversal point of direction of rotation.The excess fiber length of SZ shape skeleton grooves optical cable is relatively large, when not blocking skeleton, just directly can carry out branch as required.Certainly, skeleton grooves can also be the groove of the straight trough along fiber length or other forms.
In addition, the skeleton rib of skeleton grooves both sides has the graticule identifying skeleton grooves, the skeleton rib of every layer is both provided with identifying the graticule of skeleton grooves, such as, as in figure 2 it is shown, on the skeleton of innermost layer, having the skeleton grooves having two graticules on the rib of a graticule opposite side on the rib of side is No. 1 groove, from No. 1 groove, along the direction from No. 1 groove to No. 2 grooves, it is followed successively by No. 2 grooves to No. 5 grooves.
Similarly, on second layer skeleton, from No. 1 groove, along the direction from No. 1 groove to No. 2 grooves, it is followed successively by No. 2 grooves to No. 5 grooves, and, at interval of 5 grooves, on the rib after skeleton grooves, from a graticule, skeleton grooves is identified in the way of a cumulative graticule gradually, such as, the rib after No. 5 grooves arranges 1 graticule, the rib after No. 10 grooves arranges 2 graticules, the like, the skeleton grooves of recognizable each layer.
Fig. 3 is the manufacturing flow chart of multilamellar skeleton slot type optical cable, and also with 6 core optic fibre belt optics of Fig. 2,696 core bilayer skeleton slot type optical cables are example, and the manufacture process of multilamellar skeleton optical cable is described below in conjunction with Fig. 2, Fig. 3.First, step S101, on center reinforcement 21, extrusion molding forms the most inboard skeleton 22.Then, step S102, places fibre bundle respectively in multiple skeleton grooves of the most inboard described skeleton.Then, step S103, wrapped metal tape on the most inboard skeleton and form protective layer.The most inboard skeleton grooves optical cable 2 is formed from the outside successively skeleton 22 of reinforcement 21, fibre ribbon 23, waterstop 24 and metal tape 25.So far the most inboard skeleton grooves cable configuration is formed, then, step S104, outside described metal tape, utilize extrusion moulding method to proceed the processing of second layer skeleton grooves optical cable.As can be seen from Figure 2, on the outer circumference surface of metal tape 25, continue extrusion molding second layer skeleton 32, form the base structure of second layer skeleton grooves optical cable 3, the skeleton made enters frame cabling operation, followed by step S105, carries out fibre ribbon 33 and enters groove, further around bag waterstop 34, metal tape 35, form second layer skeleton grooves optical cable 3.
It is above forming two-layer skeleton grooves structure, if reaching design number of plies requirement, then outside the metal tape of second layer skeleton, extrudes PE material form restrictive coating, complete optical cable finished product.If it is intended to form the skeleton grooves structure more than two-layer, then perform step S106, namely repeat step S104, S105, sequentially form skeleton grooves structure outside the multilamellar of from inside to outside stacking；Finally, perform step S107, outside the protective layer of outermost outer side skeleton, be coated with restrictive coating, namely complete the processing of multilamellar skeleton grooves optical cable.
In fig. 2, the outside cladding restrictive coating 4 of the metal tape 35 in the outside being coated on second layer skeleton, form two-layer skeleton slot type cable configuration.The most inboard skeleton is laid 120 optical fiber altogether.Second layer skeleton is laid 576 optical fiber.Therefore the multilamellar skeleton slot type optical cable of the present embodiment has 696 optical fiber altogether, and the external diameter of its optical cable is within 22mm.Its density of optic fibre is big, cable configuration tight, satisfactory mechanical property.
Although the present invention is for two-layer skeleton slot type optical cable, but the invention is not limited in this.The quantity of the skeleton grooves of each casing play is merely illustrative of describing above, and the quantity of skeleton grooves can be arranged according to number of fibers.
In sum, by the multilamellar skeleton slot type optical cable of the present invention, it is achieved that techniques below effect:
1) the multilamellar skeleton slot type optical cable of the present invention forms multilamellar skeleton optical cable with monolayer skeleton for cable core, improves the density of optical fiber, and while achieving super large core number, its cable outer diameter is little；
2) the multilamellar skeleton slot type optical cable of the present invention directly extruded multilayer skeleton on monolayer skeleton, its processing technique is similar with monolayer skeleton slot type optical cable, and simple in construction, and production efficiency is high；
3) the multilamellar skeleton slot type optical cable of the present invention adopts multilamellar framing structure, its satisfactory mechanical property such as tension, lateral pressure resistant；
4) the multilamellar skeleton slot type optical cable of the present invention adopts SZ skeleton grooves, it is simple to lines branch；
5) the multilamellar skeleton slot type optical cable of the present invention adopts multilamellar framing structure, compared with many monolayer skeleton optical cables, which reduces production cost, improves efficiency of construction；
6) the multilamellar skeleton slot type optical cable of the present invention form by extruded multilayer skeleton, both can guarantee that super large core number, can guarantee that again that the skeleton grooves of every layer of skeleton had rational spacing.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. a multilamellar skeleton slot type optical cable, it is characterised in that including:
Reinforcement, is positioned at the central part of described multilamellar skeleton slot type optical cable；
The most inboard skeleton, is formed in the outside of described reinforcement, and on the most inboard described skeleton, distribution has multiple multiple skeleton grooves placing fibre ribbon；
The more than one outer side skeleton from inside to outside set gradually centered by described reinforcement, more than one, on outer side skeleton, distribution has multiple multiple skeleton grooves placing fibre ribbon；
More than the most inboard described skeleton and one on the outer wall of outer side skeleton, it is coated with the protective layer including at least metal tape, described metal tape is formed described outer side skeleton；
The protective layer of outermost described skeleton is coated with restrictive coating.
2. multilamellar skeleton slot type optical cable according to claim 1, it is characterised in that described skeleton grooves along its length twist or SZ shape distribution.
3. multilamellar skeleton slot type optical cable according to claim 1, it is characterised in that skeleton grooves is the straight trough along fiber length.
4. multilamellar skeleton slot type optical cable according to claim 1, it is characterised in that described protective layer also includes being located at the waterstop inside described metal tape.
5. multilamellar skeleton slot type optical cable according to claim 1, it is characterised in that identify skeleton grooves by the graticule on the skeleton rib of skeleton grooves both sides,
Wherein, having the skeleton grooves having two graticules on the rib of a graticule opposite side on the rib of side is No. 1 groove, from No. 1 groove, along the direction from a graticule to two graticules, it is sequentially each skeleton grooves, wherein, at interval of 5 skeleton grooves, on rib after skeleton grooves, from a graticule, in the way of a cumulative graticule gradually, identify skeleton grooves.
6. the manufacture method of a multilamellar skeleton slot type optical cable, it is characterised in that comprise the following steps:
1) outside utilizing extrusion moulding method center reinforcement forms the most inboard skeleton with multiple skeleton grooves；
2) in multiple skeleton grooves of the most inboard described skeleton, fibre bundle is placed respectively；
3) on the most inboard skeleton wrapped metal tape and form protective layer；
4) outside described metal tape, extrusion moulding method is utilized to form the outer side skeleton with multiple skeleton grooves；
5) in multiple skeleton grooves of described outer side skeleton, place fibre bundle respectively, then wrapped metal tape and form protective layer；
6) repeat described 4), 5) step sequentially forms skeleton grooves structure outside the multilamellar of from inside to outside stacking；
7) outside the protective layer of outermost outer side skeleton, restrictive coating it is coated with.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240228.7A CN105759383A (en) | 2016-04-15 | 2016-04-15 | Multilayer skeleton slot optical cable and manufacturing method thereof |
| PCT/CN2017/079905 WO2017177876A1 (en) | 2016-04-15 | 2017-04-10 | Multilayer skeleton-slot-type optical cable and manufacturing method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240228.7A CN105759383A (en) | 2016-04-15 | 2016-04-15 | Multilayer skeleton slot optical cable and manufacturing method thereof |
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| CN105759383A true CN105759383A (en) | 2016-07-13 |
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| CN201610240228.7A Pending CN105759383A (en) | 2016-04-15 | 2016-04-15 | Multilayer skeleton slot optical cable and manufacturing method thereof |
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| WO (1) | WO2017177876A1 (en) |
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| CN107015330A (en) * | 2017-05-17 | 2017-08-04 | 富通住电特种光缆（天津）有限公司 | A kind of skeleton photoelectric mixed cable and its manufacture method |
| WO2017177876A1 (en) * | 2016-04-15 | 2017-10-19 | 富通住电特种光缆（天津）有限公司 | Multilayer skeleton-slot-type optical cable and manufacturing method therefor |
| CN107479157A (en) * | 2017-08-29 | 2017-12-15 | 西安西古光通信有限公司 | A kind of non-metallic optical fiber cables and preparation method thereof |
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