CN114675388B - Skeleton type ribbon optical cable and preparation method thereof - Google Patents
Skeleton type ribbon optical cable and preparation method thereof Download PDFInfo
- Publication number
- CN114675388B CN114675388B CN202210589402.4A CN202210589402A CN114675388B CN 114675388 B CN114675388 B CN 114675388B CN 202210589402 A CN202210589402 A CN 202210589402A CN 114675388 B CN114675388 B CN 114675388B
- Authority
- CN
- China
- Prior art keywords
- framework
- optical fiber
- ribbon
- cavity
- flaky
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G02B6/4403—Optical cables with ribbon structure
-
- 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
- G02B6/4403—Optical cables with ribbon structure
- G02B6/4404—Multi-podded
-
- 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
- G02B6/4407—Optical cables with internal fluted support member
- G02B6/4409—Optical cables with internal fluted support member for ribbons
-
- 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
-
- 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
- G02B6/448—Ribbon cables
Abstract
The invention relates to a framework type ribbon optical cable and a preparation method thereof, the framework type ribbon optical cable comprises a cable core and a sheath layer coated outside the cable core, wherein the cable core comprises: the reinforcing part is arranged at the center of the framework, a plurality of flaky grooves extending along the axial direction are formed in the periphery of the framework, and the flaky grooves radially extend from the center of the framework to the periphery of the framework; the optical fiber ribbon is embedded in the flaky groove, only one optical fiber ribbon can be accommodated in one flaky groove, the plurality of optical fiber ribbons are radially arranged in the framework by taking the center of the framework as an axis along the extending direction of the flaky groove, and the width of the optical fiber ribbon is smaller than that of the flaky groove. According to the invention, the structure of the framework is improved, the extending arrangement direction of the framework grooves is changed, the optical fiber ribbons with wider widths can be accommodated in the framework grooves on the premise of ensuring that the framework can provide enough supporting force, and only one optical fiber ribbon is accommodated in one framework groove, so that the situation that the optical fiber ribbons are difficult to separate due to stacking arrangement is avoided.
Description
Technical Field
The invention relates to the technical field of optical cable structure design and preparation, in particular to a framework type ribbon optical cable and a preparation method thereof.
Background
With the rapid development of optical fiber communication industry and the dramatic increase of information demand, the traditional optical cable with small core number has difficulty in meeting the actual communication requirement. The skeleton type optical fiber ribbon cable is concerned about due to the advantages of high optical fiber density, convenience in construction and installation and the like. The skeleton type optical fiber ribbon optical cable is developed and applied in metropolitan area networks and access networks. The framework type optical cable has the characteristics of small cable diameter, light weight, good bending property, strong lateral pressure resistance and the like.
Referring to fig. 1, in a conventional skeleton optical fiber ribbon cable, optical fiber ribbons are arranged in a U-shaped spiral skeleton groove or an SZ spiral skeleton groove in a matrix form, the cross section of the skeleton groove is in a rectangular structure, and a plurality of optical fiber ribbons are stacked and embedded in one skeleton groove, and the skeleton optical fiber ribbon cable with the structure has certain defects in the actual production and use processes:
in the production process, due to the limitation of the width of the framework groove, the optical fiber ribbon arranged in the framework groove adopts a 24-core ribbon combining scheme at most, however, along with the gradual maturity of the optical fiber ribbon combining technology, the conventional ribbon combining technology can already complete 72-core ribbon combining, the conventional framework is adopted to open the optical fiber ribbon containing 72 cores, and the scheme of expanding the width of the framework groove is easy to be adopted for modification, however, if the width of the framework groove is expanded, the concave surface of the framework groove is expanded, pressure is easily applied to the framework groove from the outside, the optical fiber in the framework groove is easily extruded, and the width of the framework groove is correspondingly increased, and in order to ensure the integral supporting force of the framework, the diameter of the framework is further expanded;
in the use, because the multilayer optical fiber ribbon piles up and sets up in same skeleton groove, the optical fiber ribbon is formed through the solidification of ribbon resin, and under the service environment of high temperature, there is the slightly soluble condition in ribbon resin probably, and the optical fiber ribbon of multilayer ribbon is slightly soluble back easily glues together, the condition that appears being difficult to separate.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of the skeleton optical cable in the prior art, and provide a skeleton optical fiber ribbon and a preparation method thereof.
In order to solve the technical problem, the invention provides a framework type ribbon optical cable, which comprises a cable core and a sheath layer coated outside the cable core, wherein the cable core comprises:
the reinforcing part is arranged at the center of the framework, a plurality of flaky grooves extending along the axial direction are formed in the periphery of the framework, and the flaky grooves radially extend from the center of the framework to the periphery of the framework;
the optical fiber ribbon is embedded in the flaky groove, only one optical fiber ribbon can be accommodated in one flaky groove, the optical fiber ribbon is radially arranged in the framework by taking the center of the framework as an axis along the extending direction of the flaky groove, and the width of the optical fiber ribbon is smaller than the depth of the flaky groove.
In one embodiment of the invention, the sheet-shaped groove comprises an accommodating cavity, a first step cavity and a second step cavity, the accommodating cavity, the first step cavity and the second step cavity are sequentially arranged from the inside of the framework to the outside of the framework in a penetrating manner, the widths of the accommodating cavity, the first step cavity and the second step cavity are gradually increased, a first step surface and a second step surface are formed at the bottom of the first step cavity and the bottom of the second step cavity, the optical fiber ribbon is arranged in the accommodating cavity, and the outer portion of the optical fiber ribbon is higher than the first step surface and lower than the second step surface.
In one embodiment of the invention, a filling piece is further embedded in the second step cavity, the inner surface of the filling piece abuts against the second step surface, and the outer surface of the filling piece is flush with the outer surface of the framework to form a complete circular structure.
In one embodiment of the invention, the width of the accommodating cavity is between 0.5mm and 0.7 mm.
In one embodiment of the invention, the depth of the accommodating cavity is 0.4 mm-20.1 mm.
In one embodiment of the invention, a plurality of the sheet-shaped grooves are distributed in the framework at equal intervals in the circumferential direction.
In one embodiment of the present invention, the optical fiber ribbon is formed by curing a plurality of optical fibers through a ribbon resin, and the optical fiber ribbon includes 2 to 72 optical fibers.
In one embodiment of the invention, the skeleton is further coated with a water-resistant layer.
In one embodiment of the invention, the sheath layer is prepared from a low smoke zero halogen fuel.
In order to solve the technical problem, the invention provides a method for preparing a skeleton type ribbon cable, which is used for preparing the skeleton type ribbon cable and comprises the following steps:
s1, coloring an optical fiber;
s2, preparing an optical fiber ribbon, and sequentially connecting a plurality of colored optical fibers in parallel under the curing action of a UV lamp tube by adopting parallel resin according to the arrangement mode of a pilot chromatogram or a full chromatogram;
s3, arranging the framework at the central position, arranging a plurality of optical fiber ribbons around the framework, and synchronously embedding the optical fiber ribbons into different sheet-shaped grooves in the framework to form a cable core;
and S4, extruding and molding a sheath layer outside the cable core.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the framework type ribbon optical cable changes the structure and the distribution condition of framework grooves in the existing framework optical cable, adopts a framework with a sheet-shaped groove, and the direction of the sheet-shaped groove is set to extend from the central position of the framework to the periphery of the framework, so that the width of the framework groove for containing optical fibers is changed, the width direction of the framework groove is set on the diameter of the framework, and wider optical fiber ribbons can be contained;
specifically, in the prior art, due to the limitation of the width of the framework groove, the optical fiber ribbon arranged in the framework groove adopts a 24-core ribbon combining scheme at most, however, with the gradual maturity of the optical fiber ribbon combining technology, the existing ribbon combining technology can already complete 72-core ribbon combining, and then more optical fibers can be combined, and the existing framework is adopted to open the optical fiber ribbon containing 72 cores, so that the scheme of expanding the width of the framework groove is easy to be conceived to be modified, however, if the width of the framework groove is expanded, the concave surface of the framework groove is expanded, external pressure is easy to be applied to the framework groove, the optical fibers in the framework groove are easy to be extruded, and the width of the framework groove is correspondingly increased, so that the diameter of the framework is further required to ensure the overall supporting force of the framework;
therefore, the arrangement mode of the framework grooves and the arrangement mode of the optical fiber ribbons embedded into the framework grooves in the prior art are changed, the length of the radius of the framework is taken as the width capable of accommodating the optical fiber ribbons, and the optical fiber ribbons are oppositely arranged in the radial extending direction of the framework, so that the optical fiber ribbons with 72 cores and more than 72 cores can be accommodated; in addition, only one optical fiber ribbon can be accommodated in one sheet-shaped groove, so that on one hand, the situation that the stacked optical fiber ribbons are difficult to separate can be prevented, on the other hand, only one optical fiber ribbon is arranged in the sheet-shaped groove, and the thickness of the optical fiber ribbon is smaller, so that the width of the sheet-shaped groove which needs to be arranged is smaller, the opening width of the sheet-shaped groove can be reduced, and when the optical cable is subjected to lateral pressure, the optical fiber ribbon is not easily directly extruded, so that the overall lateral pressure resistance of the optical cable is improved;
meanwhile, the width of the optical fiber ribbon is controlled to be smaller than the depth of the flaky groove, so that the optical fiber ribbon is completely embedded into the flaky groove, and the optical fiber ribbon cannot be damaged even if the side surface of the flaky groove is extruded;
the optical fiber ribbon is embedded into the sheet-shaped groove completely, and the optical fiber ribbon is difficult to take out under the condition that a skylight is opened by stripping a cable actually, so that the sheet-shaped groove provided by the invention further comprises an accommodating cavity, a first step cavity and a second step cavity, the widths of the accommodating cavity, the first step cavity and the second step cavity are gradually increased, one end of the optical fiber ribbon is arranged to protrude out of the accommodating cavity, a certain space is reserved in the first step cavity on two sides of the part protruding out of the accommodating cavity, and in actual operation, tools can be inserted into two sides of the optical fiber ribbon, so that the optical fiber ribbon can be clamped conveniently and taken out of the accommodating cavity; and, still need consider to protect outstanding ribbon outside the holding chamber, if direct injection moulding restrictive coating outside first step chamber, so when the restrictive coating receives the extrusion, it is sunken to extrude the restrictive coating very easily, thereby make restrictive coating and outstanding fiber optic ribbon contact, cause the damage of ribbon, for this reason, set up the second step chamber that is wider in first step chamber outside first step chamber, thereby make and reserve between restrictive coating and the ribbon and have certain space, even the restrictive coating receives the extrusion and leads to the restrictive coating sunken, separation through second step chamber, also can not make restrictive coating and ribbon direct contact.
The invention also provides a preparation method of the skeleton type ribbon optical cable, which can realize the preparation of the skeleton type ribbon optical cable.
Drawings
In order that the present disclosure may be more readily understood, a more particular description of the disclosure will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings
FIG. 1 is a conventional skeletal ribbon cable of the prior art;
FIG. 2 is a schematic structural view of embodiment 1 of the skeletal ribbon cable of the present invention;
FIG. 3 is a schematic view of the construction of embodiment 2 of the skeletal ribbon cable of the present invention;
FIG. 4 is a schematic structural view of embodiment 3 of the skeletal ribbon cable of the present invention;
FIG. 5 is a flow chart of the steps of a method of making a skeletal ribbon cable of the present invention.
The specification reference numbers indicate: 1. a framework; 11. a reinforcement; 12. a sheet-like groove; 121. an accommodating cavity; 122. a first step cavity; 123. a second step cavity; 13. a filling member; 2. an optical fiber ribbon; 3. a water blocking tape; 4. a sheath layer.
Detailed Description
The present invention is further described below in conjunction with the drawings and the embodiments so that those skilled in the art can better understand the present invention and can carry out the present invention, but the embodiments are not to be construed as limiting the present invention.
Example 1
Referring to fig. 2, the framework type ribbon optical cable of the embodiment includes a cable core and a sheath layer 4 coated outside the cable core, the cross section of the cable core is a circular structure, the cross section of the sheath layer 4 is a circular ring structure concentrically arranged with the cable core, the cable core includes a framework 1 and an optical fiber ribbon 2, and the specific assembling mode is as follows: embedding an optical fiber ribbon 2 in the framework 1, wherein the optical fiber ribbon 2 is used as a communication unit to realize transmission of optical signals, the framework 1 is used as a supporting unit to effectively protect the optical fiber ribbon 2, and the framework 1 also needs to meet certain mechanical properties of tensile strength, lateral pressure resistance and bending resistance in the actual use process;
specifically, in order to design the framework 1 to have the above performance, the framework 1 should have a structure including a reinforcing member 11 capable of resisting tension and bending and a groove for accommodating and protecting the optical fiber ribbon 2, in this embodiment, the reinforcing member 11 is disposed at a central position of the framework 1, a plurality of grooves are formed at an outer periphery of the framework 1, the plurality of grooves are the same in size and shape and are all sheet-shaped grooves 12 extending along an axial direction, the plurality of sheet-shaped grooves 12 extend radially from the central position of the framework 1 to the outer periphery of the framework 1, and the plurality of sheet-shaped grooves 12 form a channel for accommodating the optical fiber ribbon 2 from inside to outside along a radial direction of the framework 1;
the framework type ribbon optical cable of the embodiment changes the structure and distribution condition of framework grooves in the existing framework optical cable, adopts a framework 1 with a sheet-shaped groove 12, and the direction of the sheet-shaped groove 12 is set to extend from the center position of the framework 1 to the periphery of the framework 1, so as to change the width of the framework groove for accommodating optical fibers, so that the width direction of the framework groove is set on the diameter of the framework 1, that is, the optical fiber ribbon 2 can be set along the extending direction of the diameter of the framework 1, theoretically, the maximum width of the optical fiber ribbon 2 can be set to be the same as the radius of the framework 1, so as to accommodate a wider optical fiber ribbon 2;
specifically, the optical fiber ribbons 2 are embedded in the sheet-shaped grooves 12, only one optical fiber ribbon 2 can be accommodated in one sheet-shaped groove 12, and a plurality of optical fiber ribbons 2 are radially arranged in the framework 1 along the extending direction of the sheet-shaped grooves 12 by taking the center of the framework 1 as an axis;
specifically, the width of the optical fiber ribbon 2 is set to be smaller than the depth of the sheet-shaped groove 12, in this embodiment, the depth of the sheet-shaped groove 12 is the length extending from the bottom surface of the sheet-shaped groove 12 to the opening of the sheet-shaped groove 12, so that the optical fiber ribbon 2 can be completely embedded into the sheet-shaped groove 12, which can further protect the optical fiber ribbon 2, and even when the side surface of the sheet-shaped groove 12 is squeezed, the optical fiber ribbon 2 cannot be damaged.
Specifically, the width and depth of the sheet-like groove 12 in the present embodiment are set according to the width and height of the optical fiber ribbon 2 after being combined, and as shown in table 1, a comparison table of the width and depth of the sheet-like groove 12 is correspondingly set according to the number of cores of the optical fiber ribbon 2:
TABLE 1 (unit mm)
In this embodiment, the optical fiber ribbon 2 is formed by a plurality of optical fibers through ribbon resin curing, the optical fiber ribbon 2 includes 2 ~ 72 optical fibers, refer to table 1, the optical fiber ribbon 2 of different core numbers is different with the width and the thickness after taking, in order to be able to imbed the optical fiber ribbon 2 into the slice recess 12, the width that sets up slice recess 12 is between 0.5mm ~ 0.7mm, guarantee that the width of slice recess 12 is greater than the thickness of an optical fiber ribbon 2, be less than two optical fiber ribbon 2's thickness can, the degree of depth that sets up slice recess 12 is between 0.8mm ~ 20.5mm, guarantee that the degree of depth that sets up slice recess 12 is greater than the width of optical fiber ribbon 2, guarantee that optical fiber ribbon 2 can imbed completely into slice recess 12.
Example 2
In the actual using process, it is found that there is a certain defect in the above embodiment 1, when the optical cable needs to be spliced, the optical cable needs to be skylight opened, after skylight opening is performed in the above embodiment 1, because the opening of the sheet-shaped groove 12 is narrow, it is difficult to take out the optical fiber ribbon 2 from the sheet-shaped groove 12, for this reason, this embodiment 2 is improved on the basis of the above embodiment 1, and details of the same structure are omitted:
specifically, in the present embodiment, the sheet-shaped groove 12 is modified, the sheet-shaped groove 12 is provided to be a sectional structure, as shown in fig. 3, the sheet-shaped groove 12 includes an accommodating cavity 121, a first step cavity 122 and a second step cavity 123, and the accommodating cavity 121, the first step cavity 122 and the second step cavity 123 are sequentially arranged from inside of the framework 1 to outside of the framework 1 in a through manner; the section of the accommodating cavity 121 is rectangular, and an optical fiber ribbon 2 can be placed in the accommodating cavity 121; the first stepped cavity 122 is arranged outside the accommodating cavity 121, the cross section of the first stepped cavity 122 is in a sector shape, the inner side of the first stepped cavity 122 is communicated with the accommodating cavity 121 and coaxially arranged with the accommodating cavity 121, the width of the inner side of the first stepped cavity 122 is greater than that of the accommodating cavity 121, and a first stepped surface is formed at the joint of the first stepped cavity 122 and the accommodating cavity 121; the second step cavity 123 is arranged outside the first step cavity 122, the cross section of the second step cavity 123 is fan-shaped, the inner side of the second step cavity 123 is communicated with the first step cavity 122 and coaxially arranged with the first step cavity 122, the width of the inner side of the second step cavity 123 is larger than the width of the outer side of the first step cavity 122, a second step surface is formed at the joint of the second step cavity 123 and the first step cavity 122, the optical fiber ribbon 2 is inserted into the accommodating cavity 121 through the second step cavity 123 and the first step cavity 122 in sequence, the inner part of the optical fiber ribbon 2 abuts against the bottom of the accommodating cavity 121, the outer part of the optical fiber ribbon 2 protrudes out of the accommodating cavity 121, and the part protruding out of the accommodating cavity 121 is higher than the first step surface and lower than the second step surface.
In this embodiment, a first step cavity 122 wider than the accommodating cavity 121 is disposed outside the accommodating cavity 121, and one end of the optical fiber ribbon 2 is disposed to protrude from the accommodating cavity 121, so that a certain space is reserved in the first step cavity 122 on both sides of the portion protruding from the accommodating cavity 121, and in actual operation, a tool can be inserted into both sides of the optical fiber ribbon 2, so as to clamp the optical fiber ribbon 2, and the optical fiber ribbon 2 can be conveniently taken out from the accommodating cavity 121; and, in the technical scheme of this embodiment, need consider and protect outstanding 2 fiber ribbons outside holding chamber 121, if direct injection moulding restrictive coating 4 outside first step chamber 122, then when restrictive coating 4 receives the extrusion, it is sunken to extrude restrictive coating 4 very easily to make restrictive coating 4 and outstanding 2 contact of fiber ribbon, cause the damage of fiber ribbon 2, for this, first step chamber 122 sets up the second step chamber 123 that is wider in first step chamber 122 outward, thereby make and reserve certain space between restrictive coating 4 and the fiber ribbon 2, even restrictive coating 4 receives the extrusion and leads to restrictive coating 4 sunken, through the separation of second step face, also can not make restrictive coating 4 and 2 direct contact of fiber ribbon.
Specifically, the width and depth of the accommodating cavity 121 in this embodiment are set according to the width and height of the optical fiber ribbon 2 after ribbon splicing, and as shown in table 2, according to the number of cores of the optical fiber ribbon 2, a comparison table of the width and depth of the accommodating cavity 121 is correspondingly set:
TABLE 2 (unit mm)
In this embodiment, the optical fiber ribbon 2 is formed by passing a plurality of optical fibers through a ribbon resin and curing the ribbon resin, the optical fiber ribbon 2 includes 2 to 72 optical fibers, refer to table 2, the optical fiber ribbons 2 with different core numbers have different widths and thicknesses after being taken, in order to embed the optical fiber ribbons 2 into the accommodating cavity 121 and protrude from the accommodating cavity 121, the width of the accommodating cavity 121 is set to be 0.5mm to 0.7mm, it is ensured that the width of the accommodating cavity 121 is greater than the thickness of one optical fiber ribbon 2 and is smaller than the thicknesses of two optical fiber ribbons 2, the depth of the accommodating cavity 121 is set to be 0.4mm to 20.1mm, it is ensured that one part of the optical fiber ribbon 2 can protrude from the accommodating cavity 121, in the embodiment, the optical fiber ribbon 2 is set to protrude from the accommodating cavity 121 by 0.3mm, so the depth of the first step cavity 122 and the second step cavity 123 is set to be 0.5mm and greater than 0.3mm, and it is ensured that the part of the accommodating cavity 121 of the optical fiber ribbon 2 is higher than the first step surface and lower than the second step surface.
Example 3
In the technical scheme of embodiment 2 above, the second stepped cavity 123 still has a certain opening to the outside, on one hand, the roundness of the cable core is affected, and when the sheath layer 4 is injection-molded, the sheath layer 4 at the opening is easy to collapse, and on the other hand, when the sheath layer 4 at the opening is also easy to deform by extrusion when the sheath layer is laterally extruded, in order to further perfect the technical scheme of embodiment 2, this embodiment 3 is improved on the basis of the above embodiment 2, and the parts with the same structure are not described again:
referring to fig. 4, in this embodiment, a filler 13 is further embedded in the second step cavity 123, the filler 13 is of a profiling structure, the shape of the filler 13 is the same as that of the second step cavity 123, the inner surface of the filler 13 abuts against the second step surface, and the outer surface of the filler 13 is flush with the outer surface of the framework 1, so that the whole framework 1 forms a complete circular structure, the roundness of the whole cable core is ensured, the situation of injection molding material collapse cannot occur in the injection molding process, and when the whole framework 1 is subjected to side extrusion, external pressure is applied to the filler 13, the filler 13 is pressed against the second step surface, and external pressure can be prevented from being transmitted to the optical fiber ribbon 2.
Referring to fig. 2 to 4, in order to ensure the symmetry of the whole cable core and simultaneously ensure the reasonableness of the distribution of the optical fiber ribbon 2, in the above embodiments 1 to 3, a plurality of the sheet-shaped grooves 12 are distributed in the framework 1 at equal intervals in the circumferential direction, so that the sheet-shaped grooves 12 can be arranged as much as possible around the center of the framework 1, the volume fraction of the optical fibers in the framework 1 is further improved, and the bearing capacity of the framework 1 is ensured to be the same when any angle of the circumferential surface of the cable core is stressed.
Specifically, moisture factors may affect the transmission efficiency and the service life of the optical fiber, and therefore, a certain water blocking measure needs to be adopted in the optical cable when the optical fiber needs to be arranged in a relatively dry environment, as shown in fig. 2 to 4, in order to further improve the water blocking performance of the optical cable, a water blocking layer is coated outside the framework 1 described in the above embodiments 1 to 3, the water blocking layer is a water blocking tape 3, and the water blocking tape 3 can play a role in absorbing water and keeping the environment outside the optical fiber relatively dry on one hand, and on the other hand, the water blocking tape 3 has a water absorbing expansion characteristic and can also play a role in blocking and isolating water after expansion;
specifically, the winding modes of the water-blocking tape 3 outside the cable core are two:
1. longitudinally wrapping the water-blocking tape 3, and ensuring that the lapping edge position of the longitudinally wrapped water-blocking tape 3 is at the same position relative to the cable core, and has certain requirements on the width of the selected water-blocking tape 3: the lap width of the water-blocking tape 3 is ensured to be more than 5mm.
2. And (3) winding the water-blocking tape 3, taking the cable core as an axis, and spirally winding the water-blocking tape outside the cable core, wherein the winding overlapping rate of the water-blocking tape 3 is required to be ensured to be 25-45%.
Specifically, the sheath layer 4 in the above embodiments 1 to 3 is prepared by using a low smoke zero halogen flame retardant, and the sheath layer 4 has the properties of ultraviolet resistance, water resistance, mildew resistance and environmental stress cracking resistance; and no acid gas is released, the equipment in a machine room is not corroded, and the flame retardant is suitable for the indoor environment with high flame retardant grade.
Example 4
Referring to fig. 5, the present invention also provides a method for preparing the skeletal ribbon cables of the above embodiments 1 to 3, comprising the steps of:
s1, coloring the optical fiber, wherein the optical fiber is colorless and transparent after being prepared by drawing, but in the actual use process, in order to distinguish the optical fiber, the optical fiber needs to be colored, coloring ink is adopted to spray the bare optical fiber, and the coloring ink is cured under the irradiation of a UV lamp;
s2, preparing an optical fiber ribbon 2, and sequentially connecting a plurality of colored optical fibers in parallel by adopting parallel-band resin under the curing action of a UV lamp tube according to the arrangement mode of a pilot color spectrum or a full color spectrum;
specifically, the optical fiber ribbon 2 with 12 cores inside is prepared, the preparation is completed by one-time ribbon combination, and the arrangement sequence of the optical fibers can be arranged according to a pilot chromatogram: for example, a chromatographic arrangement of blue, white, blue, white may be used, or a full chromatographic arrangement may be used: adopting blue, orange, green, brown, gray, white, red, black, yellow, purple, pink and turquoise color spectrum arrangement; when preparing the optical fiber ribbon 2 with more than 12 cores, secondary ribbon combination or multiple ribbon combination treatment is needed, and different pilot color spectrum arrangements can be adopted: for example, optical fiber ribbons 2 using 12-core ribbons of blue, white, blue, white and orange white, orange, white 12-core ribbon optical fiber ribbon 2 is subjected to ribbon combination, it is also possible to spray-print serial numbers on the optical fiber ribbon 2 using a full-color-spectrum arrangement of different numbers.
S3, preparing a cable core;
s3-1, arranging a framework 1 at a central position, arranging a plurality of optical fiber ribbons 2 around the framework 1, arranging the optical fiber ribbons 2 on a pay-off rack of a cage stranding machine, and synchronously embedding the optical fiber ribbons 2 into different sheet-shaped grooves 12 in the framework 1;
s3-2, preparing filling pieces 13 with the same shapes as the second step cavities 123 in the framework 1, and synchronously embedding a plurality of filling pieces 13 into different second step cavities 123 in the framework 1 to form a cable core;
s3-3, wrapping or longitudinally wrapping the waterproof tape 3 outside the cable core to form a waterproof layer;
s4, preparing a sheath layer 4, wherein the sheath layer 4 is prepared by adopting a tube extruding die, the injection molding material adopts low-smoke halogen-free flame retardant, and the injection molding material is molded into a tubular structure under the extrusion molding action of the tube extruding die and is coated on the periphery of the cable core.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a framework ribbon optical cable, includes cable core and the restrictive coating of cladding outside the cable core, its characterized in that, the cable core includes:
the reinforcing part is arranged at the center of the framework, a plurality of flaky grooves extending along the axial direction are formed in the periphery of the framework, and the flaky grooves radially extend from the center of the framework to the periphery of the framework;
the optical fiber ribbons are embedded in the flaky grooves, only one optical fiber ribbon can be accommodated in one flaky groove, the optical fiber ribbons are radially arranged in the framework along the extension direction of the flaky grooves by taking the center of the framework as an axis, and the width of the optical fiber ribbon is smaller than the depth of the flaky groove;
the flaky groove comprises an accommodating cavity, a first step cavity and a second step cavity, the accommodating cavity, the first step cavity and the second step cavity are sequentially communicated from the inside of the framework to the outside of the framework, the widths of the accommodating cavity, the first step cavity and the second step cavity are gradually increased, and the width of the accommodating cavity is 0.5-0.7 mm; the cross section of the first step cavity is fan-shaped, the width of the inner side of the first step cavity is larger than that of the accommodating cavity, a first step surface is formed at the joint of the first step cavity and the accommodating cavity, the second step cavity is arranged outside the first step cavity, and the cross section of the second step cavity is fan-shaped; the width of the inner side of the second step cavity is larger than the width of the outer side of the first step cavity, a second step surface is formed at the joint of the second step cavity and the first step cavity, the optical fiber ribbon is arranged in the accommodating cavity, and the outer portion of the optical fiber ribbon is higher than the first step surface and lower than the second step surface.
2. The skeletal ribbon cable of claim 1, wherein: and a filling piece is further embedded in the second step cavity, the inner surface of the filling piece abuts against the second step surface, and the outer surface of the filling piece is flush with the outer surface of the framework to form a complete circular structure.
3. The skeletal ribbon cable of claim 1, wherein: the depth of the accommodating cavity is 0.4 mm-20.1 mm.
4. The skeletal ribbon cable of claim 1, wherein: the plurality of sheet-shaped grooves are distributed in the framework at equal intervals in the circumferential direction.
5. The skeletal ribbon cable of claim 1, wherein: the optical fiber ribbon is formed by solidifying a plurality of optical fibers through a ribbon resin, and comprises 2-72 optical fibers.
6. The skeletal ribbon cable of claim 1, wherein: and a water-resistant layer is coated outside the framework.
7. The skeletal ribbon cable of claim 1, wherein: the sheath layer is prepared from low-smoke halogen-free flame retardant.
8. A preparation method of a skeleton type ribbon cable is characterized by comprising the following steps: a skeletal ribbon cable for use in making a fiber optic ribbon cable as claimed in any of claims 1 to 7, comprising the steps of:
s1, coloring an optical fiber;
s2, preparing an optical fiber ribbon, and sequentially connecting a plurality of colored optical fibers in parallel by adopting parallel-band resin under the curing action of a UV lamp tube according to the arrangement mode of a pilot color spectrum or a full color spectrum;
s3, arranging the framework at the central position, arranging a plurality of optical fiber ribbons around the framework, and synchronously embedding the optical fiber ribbons into different flaky grooves in the framework to form a cable core;
and S4, extruding and molding a sheath layer outside the cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589402.4A CN114675388B (en) | 2022-05-27 | 2022-05-27 | Skeleton type ribbon optical cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589402.4A CN114675388B (en) | 2022-05-27 | 2022-05-27 | Skeleton type ribbon optical cable and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114675388A CN114675388A (en) | 2022-06-28 |
| CN114675388B true CN114675388B (en) | 2022-12-27 |
Family
ID=82079971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210589402.4A Active CN114675388B (en) | 2022-05-27 | 2022-05-27 | Skeleton type ribbon optical cable and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114675388B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2876812Y (en) * | 2006-03-09 | 2007-03-07 | 深圳市特发信息股份有限公司光缆分公司 | Unidirectional skeleton type optical fiber band optical cable |
| CN102590968A (en) * | 2012-04-07 | 2012-07-18 | 常熟市谷雷特机械产品设计有限公司 | Skeleton type cable |
| CN210166544U (en) * | 2019-08-01 | 2020-03-20 | 常熟市谷雷特机械产品设计有限公司 | Optical fiber ribbon and optical cable using same |
| CN213934336U (en) * | 2021-01-27 | 2021-08-10 | 江苏长飞中利光纤光缆有限公司 | Outdoor optical cable with large-core-number optical fiber ribbon |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222177A (en) * | 1992-03-31 | 1993-06-22 | At&T Bell Laboratories | Underwater optical fiber cable having optical fiber coupled to grooved core member |
| JP2578926Y2 (en) * | 1993-05-17 | 1998-08-20 | 古河電気工業株式会社 | Optical fiber unit |
| CN2869902Y (en) * | 2006-03-09 | 2007-02-14 | 深圳市特发信息股份有限公司光缆分公司 | Skeleton type optical-fiber-band optical cable |
| JP2010039020A (en) * | 2008-08-01 | 2010-02-18 | Furukawa Electric Co Ltd:The | Slot type optical cable |
| CN206546460U (en) * | 2017-02-23 | 2017-10-10 | 钱少俊 | A kind of new type bone posture cable configuration |
| CN213123841U (en) * | 2020-08-25 | 2021-05-04 | 宏安集团有限公司 | Skeleton type photoelectric composite cable |
| CN112835162A (en) * | 2021-01-23 | 2021-05-25 | 常熟高通智能装备有限公司 | Optical fiber ribbon cable |
| CN113866921A (en) * | 2021-10-13 | 2021-12-31 | 江苏亨通光电股份有限公司 | Flexible skeleton type optical fiber ribbon cable and preparation method thereof |
| CN114063236B (en) * | 2022-01-12 | 2022-04-22 | 长飞光纤光缆股份有限公司 | Compression-resistant framework type optical cable and preparation method thereof |
-
2022
- 2022-05-27 CN CN202210589402.4A patent/CN114675388B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2876812Y (en) * | 2006-03-09 | 2007-03-07 | 深圳市特发信息股份有限公司光缆分公司 | Unidirectional skeleton type optical fiber band optical cable |
| CN102590968A (en) * | 2012-04-07 | 2012-07-18 | 常熟市谷雷特机械产品设计有限公司 | Skeleton type cable |
| CN210166544U (en) * | 2019-08-01 | 2020-03-20 | 常熟市谷雷特机械产品设计有限公司 | Optical fiber ribbon and optical cable using same |
| CN213934336U (en) * | 2021-01-27 | 2021-08-10 | 江苏长飞中利光纤光缆有限公司 | Outdoor optical cable with large-core-number optical fiber ribbon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114675388A (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10684432B2 (en) | Fiber optic cables and assemblies for fiber toward the subscriber applications | |
| AU2005306625B2 (en) | Optical fiber cable with fiber receiving jacket ducts | |
| EP3470901A1 (en) | Optical fiber cable with dual layer buffer tube for microduct application | |
| CN103777291A (en) | An optical fiber cable | |
| WO2008016642A2 (en) | Fiber optic cables and assemblies suitable for distribution | |
| CN105759383A (en) | Multilayer skeleton slot optical cable and manufacturing method thereof | |
| EP3467560A1 (en) | All-dry optical fiber ribbon loose tube and manufacturing method thereof | |
| CN114675388B (en) | Skeleton type ribbon optical cable and preparation method thereof | |
| JP6268774B2 (en) | Optical cable | |
| CN111331813A (en) | Mold and method for manufacturing communication optical cable by using same | |
| CN216387518U (en) | Double-layer tight-buffered optical fiber and manufacturing equipment thereof | |
| KR20130106818A (en) | Plastic optical fiber unit and plastic optical fiber cable using same | |
| CN211236366U (en) | Novel prefabricated end butterfly-shaped leading-in optical cable | |
| AU2017221814A1 (en) | Fiber optic cables and assemblies for fiber toward the subscriber applications | |
| CN219349205U (en) | Miniature low-temperature-resistant all-dry optical cable and production equipment thereof | |
| CN114236727A (en) | Double-layer tight-buffered optical fiber and method and apparatus for making same | |
| JPH08171033A (en) | Spacer type optical fiber cable | |
| CN116165755A (en) | Optical ribbon cable and manufacturing method thereof | |
| KR20220051570A (en) | Optic Cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |