CN107065091A - A kind of optical cable and its manufacture method of easily putting in a skylight - Google Patents
A kind of optical cable and its manufacture method of easily putting in a skylight Download PDFInfo
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- CN107065091A CN107065091A CN201710114683.7A CN201710114683A CN107065091A CN 107065091 A CN107065091 A CN 107065091A CN 201710114683 A CN201710114683 A CN 201710114683A CN 107065091 A CN107065091 A CN 107065091A
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- oversheath
- pair
- host cavity
- tag
- cable
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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
-
- 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
- G02B6/4482—Code or colour marking
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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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/56—Processes for repairing optical cables
- G02B6/566—Devices for opening or removing the mantle
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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)
Abstract
The present invention relates to fiber optic communication and its manufacture field, disclose hollow to form host cavity in a kind of easily put in a skylight optical cable, including oversheath, internal layer, the oversheath, and the host cavity has long end and short end；The internal layer, which is contained in be provided with the host cavity, and the internal layer, is formed with gap between fiber unit, and the long end of the host cavity and the outer wall of the internal layer, and the internal layer is held at the short end by the oversheath inwall；Simultaneously, the tag line that the outer surface of the oversheath extends provided with least one pair of along oversheath length of cable direction, and the position of tag line described in a pair is configured such that on the cross section of optical cable, between two tag lines and positioned at surface of outer sheath every bit to the line between the optical cable cable heart by the gap.The invention also discloses a kind of manufacture method for the optical cable that easily puts in a skylight.The present invention can effectively improve accuracy during cable stripping, it is to avoid damage optical fiber.
Description
Technical field
The present invention relates to fiber optic communication and its manufacture field, and in particular to a kind of optical cable and one kind of easily putting in a skylight easily puts in a skylight
The manufacture method of optical cable.
Background technology
As country and related communication department are supported the policy of " broadband China " strategy, and fiber to the home is quickly sent out
Usage amount with line segment and section optical cable of registering one's residence in exhibition, fiber optic network is also consequently increased rapidly, for using optical cable with line segment
Density of optic fibre, space-consuming resource, constructing, lay etc. has high requirement.
Conventional includes multicore butterfly optical cable, Multi-core optical distribution cable, Multi-core branched optical cable etc. with line segment optical cable species, is entering
When row building cabling needs to put in a skylight to optical cable, because the optical fiber subelement that each Loose tube is constituted firmly is wrapped by oversheath
Wrap up in, and Loose tube is in close contact between the two with oversheath, it is impossible to it is accurate to grasp position and the depth that optical cable puts in a skylight, easily hurt light
Cable inner fiber, damages optical cable.
The content of the invention
For defect present in prior art, it is an object of the invention to provide it is a kind of easily put in a skylight optical cable and one kind it is easy
Put in a skylight the manufacture method of optical cable, effectively improves accuracy during cable stripping, it is to avoid damage optical fiber.
To achieve the above objectives, the present invention is adopted the technical scheme that, including：
It is hollow to form host cavity in oversheath, the oversheath, and the host cavity has long end and short end；
Internal layer, the internal layer, which is contained in the host cavity, and the internal layer, is provided with fiber unit, and the host cavity
Gap is formed between the outer wall of long end and the internal layer, and the internal layer is held on the short end by the oversheath inwall
Place；Meanwhile,
The tag line that the outer surface of the oversheath extends provided with least one pair of along oversheath length of cable direction, and a pair
The position of the tag line is configured such that on the cross section of optical cable, between two tag lines and positioned at surface of outer sheath
Every bit passes through the gap to the line between the optical cable cable heart.
On the basis of above-mentioned technical proposal, the cross section of the host cavity is ellipse, and the long end of the host cavity is receipts
The major axis of cavity volume cross section, the short end of the host cavity is the short axle of host cavity cross section, and the inner layer outer wall is horizontal with host cavity
Two minor axis vertex in section are in contact, and the tag line is 2 pairs, and each pair tag line is close to a major axis of host cavity cross section
The line major axis summit close with this pair of tag line is tangent between two tag lines in summit, each pair tag line.
On the basis of above-mentioned technical proposal, the outer surface of the oversheath is provided with two pairs of tag lines, two pairs of marks
Line is respectively first pair of tag line and second pair of tag line, a major axis top of the first pair of tag line close to host cavity cross section
Line and the major axis summit point, and two tag lines of first tag line is tangent, and second pair of tag line is close to receipts
Another major axis summit of cavity volume cross section, and line two tag lines of second tag line and the major axis summit are tangent.
On the basis of above-mentioned technical proposal, the color of two pairs of tag lines is different from the color of the oversheath,
Two mark line colors of first pair of tag line are identical, and two mark line colors of second pair of tag line are identical, and
The color of first pair of tag line is different from the color of second pair of tag line.
On the basis of above-mentioned technical proposal, the fiber unit is followed successively by from the inside to the outside：
Center reinforcemen；
Multifiber Loose tube, the multifiber Loose tube uniform ring is around being distributed in center reinforcemen surrounding, and every
Comprising many colored optical fibers in optical fiber loose tube；And
Water blocking layer.
On the basis of above-mentioned technical proposal, two reinforcements are provided with the oversheath, the reinforcer is located at outer shield
Between the inner surface of set and outer surface, and two reinforcements are symmetrical arranged centered on center reinforcemen, the optical fiber loose tube
Interior colored optical fiber is that water blocking yarn is filled between 12, and 12 colored optical fibers.
On the basis of above-mentioned technical proposal, the material of the center reinforcemen is FRP, aramid yarn reinforcement FRP, band bed course
FRP or KFRP with bed course, the material of the optical fiber loose tube is polybutylene terephthalate (PBT) or modified polypropene, institute
The material for stating oversheath is polyethylene, low smoke halogen-free flame-retardant polyolefin or polyurethane elastomer.
On the basis of above-mentioned technical proposal, the external diameter of the optical fiber loose tube is 1.20~1.25mm, and wall thickness is 0.10
~0.12mm, a diameter of 250 μm of colored optical fiber, a diameter of 8.0mm of oversheath.
Present invention additionally comprises a kind of manufacture method for the optical cable that easily puts in a skylight, including：
S1：The tension force for adjusting optical fiber pay-off rack is 150~180g, and makes 1~12 a diameter of 250 μm of colored optical fiber equal
It is even to pass through optical fiber line concentration mould；
S2：The tension force for adjusting water blocking yarn pay off rack is 180~200g, and makes water blocking yarn uniformly through water blocking yarn line concentration mould；
S3：The polybutylene terephthalate (PBT) or modified polypropene of melting by spreader, are got into shaping by extruder
Squeeze in pipe mold, form the interior Dry-type fiber loose tube containing water blocking yarn and 1~12 colored optical fiber；
S4：It is 15 that optical fiber loose tube, which sequentially passes through the first water-saving groove, auxiliary traction machine and the temperature that temperature is 60 DEG C ± 5 DEG C,
DEG C the second water-saving groove be cooled and shaped, be made shaping external diameter be 1.20~1.25mm, wall thickness be 0.10~0.12mm optical fiber
Loose tube, and dry up optical fiber loose tube surface；
S5：Multifiber Loose tube unidirectionally twisted around center reinforcemen and, and by twist and after multifiber Loose tube be wrapped in
In waterstop, cable core is formed；
S6：The tension force for adjusting reinforcer pay off rack is 1~2 ㎏, and reinforcer pay off rack makes two reinforcements levels at the uniform velocity lead to
Cross wire parallel module both sides；
S7：The laying tension for controlling cable core is 2~3 ㎏, makes center of the cable core at the uniform velocity by wire parallel module；
S8：The polyethylene, low smoke halogen-free flame-retardant polyolefin or polyurethane elastomer of melting are passed through spreader by main extruder
In the mould for getting into main extruder head, oversheath is formed, and the cross section of the host cavity of oversheath is ellipse, cable core position
In in oversheath host cavity, and the minor axis vertex of the outer surface and oversheath host cavity cross section of cable core is tangent, two reinforcements
Between the inner surface of oversheath and outer surface, and two reinforcements are symmetrical arranged centered on the center reinforcemen of cable core；
S9：Two subsidiary extruders are each to extrude a pair of vittas in outer jacket outer surface, and each pair tag line is horizontal close to host cavity
One major axis summit in section, and line and the close major axis summit of this pair of tag line between two tag lines in each pair tag line
It is tangent, so far, form optical cable；
S10：Optical cable is sequentially passed through into the first water-saving groove that temperature is 45 DEG C ± 5 DEG C and the second water-saving groove that temperature is 15 DEG C
Cooling and shaping, and dry up cable surface；
S11：Optical cable is closed on disk tool, so far, prepares and completes.
On the basis of above-mentioned technical proposal, the color two vittas is different, two vitta colors in each pair vitta
It is identical, and the color of every vitta is different from the color of oversheath (6).
Compared with prior art, a kind of advantage for easily putting in a skylight optical cable of the present invention is：
(1) when being put in a skylight to cable of the invention, according to each pair tag line of surface of outer sheath, in each pair tag line
Between carry out stripping, equivalent to by each pair tag line, define a specific stripping in cable surface interval, reduce staff
The difficulty of optical cable baring point is found, the degree of accuracy that staff determines optical cable baring point is improved, meanwhile, two in each pair tag line
Line and the close major axis summit of this pair of tag line are tangent state between tag line, equivalent to two marks in each pair tag line
One deep identification of virtual line formation, oversheath just can be peeled off just accordingly between line, effectively the stripping of control and grasp optical cable
Depth, it is to avoid damage optical fiber.
(2) stripping is carried out between a pair of tag lines of oversheath outer surface during stripping, and each pair tag line is close to outer shield
The major axis summit of host cavity one is covered, and has space between oversheath host cavity major axis summit and water blocking layer, that is, optical cable baring
Safe distance is left between point and cable core, therefore, when carrying out stripping to optical cable, can further be reduced because optical cable baring is to optical fiber
The generation of injury event.
(3) optical fiber loose tube is set around center reinforcemen, by the center reinforcemen at optical cable center to the optical fiber of optical cable
Unit is fixed, and in optical cable installation or bending, optical cable is more uniformly stressed, and improves the stability of cable configuration.
A kind of advantage of the manufacture method for the optical cable that easily puts in a skylight of the present invention is：
(1) optical fiber loose tube is in cooling, by the stretching action of auxiliary traction machine, and accurate control colored optical fiber is in optical fiber
Remaining length in Loose tube, and excess length control of the colored optical fiber in optical fiber loose tube is 0.01%.
(2) optical cable that is produced of the present invention, maximum gauge is no more than 8.0mm, and optical fiber loose tube external diameter is 1.20~
1.25mm, wall thickness is that can be accommodated outside 12 common 250um optical fiber, whole optical cable inside 0.10~0.12mm, optical fiber loose tube
Footpath is small, and density of optic fibre is high, and capacity is big.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the optical cable that easily puts in a skylight of the present invention.
In figure：1- center reinforcemens, 2- optical fiber loose tubes, 3- colored optical fibers, 4- water blocking layers, 5- host cavities, 6- oversheaths,
7- tag lines, 8- first is to tag line, and 9- second is to tag line, 10- reinforcers, 11- internal layers, 12- gaps.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Shown in Figure 1, the present invention is provided in a kind of easily put in a skylight optical cable, including oversheath 6 and internal layer 11, oversheath 6
Hollow to form host cavity 5, and host cavity 5 has long end and short end, and internal layer 11 is contained in host cavity 5, and internal layer 11 and is provided with
Gap 12 is formed between fiber unit, and the long end of host cavity 5 and the outer wall of internal layer 11, and internal layer 11 is by the inwall of oversheath 6
It is held at short end, the outer surface of oversheath 6 is provided with least one pair of tag line 7 extended along the length of cable direction of oversheath 6, and
The position of a pair of tag lines 7 is configured such that on the cross section of optical cable, between two tag lines 7 and positioned at the table of oversheath 6
The every bit in face is to the line between the optical cable cable heart by gap 12.
Specifically, the cross section of host cavity 5 is ellipse, the long end of host cavity 5 is the major axis of the cross section of host cavity 5, is housed
The short end of chamber 5 is the short axle of the cross section of host cavity 5, and the outer wall of internal layer 11 is in contact with two minor axis vertex of the cross section of host cavity 5, is marked
It is 2 pairs to know line 7, and two marks in a major axis summit of the cross section of host cavity 5, each pair tag line 7 of each pair tag line 7
7 lines of line major axis summit close with this pair of tag line 7 is tangent.
The cross section of the outer surface of oversheath 6 is circle, and the cross section of internal layer 11 is circle, forms the outer surface of internal layer 11 and outer
The minor axis vertex of the cross section of host cavity 5 of sheath 6 is in contact structure, but the outer surface of internal layer 11 and the cross section of 6 host cavity of oversheath 5
The segment distance of major axis vertex spacings one structure.
For tag line 7, specifically, the outer surface of oversheath 6 is provided with two pairs of tag lines 7, two pairs of tag lines 7 are respectively the
A pair of tag lines 8 and second pair of tag line 9, first pair of tag line 8 is close to a major axis summit of the cross section of host cavity 5, and first
Tangent the line two tag lines 7 of tag line 8 and the major axis summit, second pair of tag line 9 is close to the cross section of host cavity 5
Another major axis summit, and line two tag lines 7 of second tag line 9 and the major axis summit are tangent.Two pairs of marks
The color of line 7 is different from the color of oversheath 6, and two colors of tag line 7 of first pair of tag line 8 are identical, second pair of mark
Two colors of tag line 7 of line 9 are identical, and the color of first pair of tag line 8 is different from the color of second pair of tag line 9.
Fiber unit is followed successively by center reinforcemen 1, multifiber Loose tube 2, water blocking layer 4 and oversheath 6 from the inside to the outside, many
The uniform ring of root optical fiber loose tube 2 around be distributed in the surrounding of center reinforcemen 1, and every optical fiber loose tube 2 comprising many coloring
Optical fiber 3, the colored optical fiber 3 that optical fiber loose tube 2 is generally in 6, every optical fiber loose tube 2 is between 12,12 colored optical fibers 3
Filled with water blocking yarn, 6 optical fiber loose tubes 2 are set in the surrounding of center reinforcemen 1 using by the way of arrangement, and water blocking layer 4 will
Optical fiber loose tube 2 and center reinforcemen 1 carry out wrapped, the use waterstop composition of water blocking layer 4.
When workmen is put in a skylight to the cable of the present invention, according to the tag line 7 on the surface of oversheath 6, in each pair
Stripping is carried out between tag line 7, meanwhile, two tag lines, 7 lines and the close length of this pair of tag line 7 in each pair tag line 7
Axle summit is tangent state, forms a deep identifications equivalent to two tag lines, 7 virtual lines in each pair tag line 7, accordingly
Just oversheath 6 can be peeled off just, effectively the stripping depth of control and grasp optical cable, meanwhile, because of the host cavity major axis top of oversheath 6
Have between point and water blocking layer 4 and safe distance is left between space, i.e. optical cable baring point and cable core, so as to further reduce because optical cable is opened
Shell the generation to the injury event of optical fiber.According to each pair tag line 7, when carrying out stripping to optical cable, it is more prone to using flat stripping
Mode, i.e., carry out flat stripping along optical cable longitudinal direction.
It is water blocking yarn in optical fiber loose tube 2, water blocking layer 4 is waterstop, belongs to dry type cable, is constructed to cable
When continuing, compared to conventional cable, the ointment without wiping the surface of optical fiber loose tube 2 and the surface of colored optical fiber 3 is convenient and swift,
And the fixation of fiber unit relies on the center reinforcemen 1 at whole optical cable center in cable core so that cable configuration is more stablized.
Two reinforcements 10 are provided with the stability of cable configuration, oversheath 6 further to improve, reinforcer 10 is located at outer
Between the inner surface of sheath 6 and outer surface, and two reinforcements 10 are symmetrical arranged centered on center reinforcemen 1.
For the material of optical cable, the material of center reinforcemen 1 for FRP (Fiber Reinforced Polymer,
Fibre reinforced composites), aramid yarn strengthen FRP, the FRP with bed course or the KFRP (aramid fiber) with bed course, optical fiber pine set
The material of pipe 2 is polybutylene terephthalate (PBT) or modified polypropene, and the material of oversheath 6 is polyethylene, low smoke and zero halogen resistance
Fire polyolefin or polyurethane elastomer, fire-retardant and environmental protection.
For the size of optical cable, the external diameter of optical fiber loose tube 2 is 1.20~1.25mm, wall thickness is 0.10~
0.12mm, a diameter of 250 μm of colored optical fiber 3, a diameter of 8.0mm of oversheath 6, whole cable outer diameter is small, and density of optic fibre is high,
Capacity is big, is adapted under vertical shaft, ventilation shaft, wire casing, carpet indoors, uses under a variety of environment such as wall and roof ceiling.
The present invention also provides a kind of manufacture method for being used to produce the above-mentioned optical cable that easily puts in a skylight, and comprises the following steps：
S1：The tension force for adjusting optical fiber pay-off rack is 150~180g, and makes 1~12 a diameter of 250 μm of colored optical fiber 3
Uniformly through optical fiber line concentration mould；
S2：The tension force for adjusting water blocking yarn pay off rack is 180~200g, and makes water blocking yarn uniformly through water blocking yarn line concentration mould；
S3：The polybutylene terephthalate (PBT) or modified polypropene of melting by spreader, are got into shaping by extruder
Squeeze in pipe mold, form the interior Dry-type fiber loose tube 2 containing water blocking yarn and 1~12 colored optical fiber 3；
S4：Optical fiber loose tube 2 sequentially passes through the first water-saving groove, auxiliary traction machine and the temperature that temperature is 60 DEG C ± 5 DEG C
15 DEG C of the second water-saving groove is cooled and shaped, and the external diameter that shaping is made is 1.20~1.25mm, and wall thickness is 0.10~0.12mm light
Fine Loose tube 2, and dry up the surface of optical fiber loose tube 2.By the cooling step by step and the stretching of auxiliary traction machine of tank temperature, pass through
The stretching action of auxiliary traction machine, remaining length of the accurate control colored optical fiber 3 in optical fiber loose tube 2, and colored optical fiber 3 is in optical fiber
Excess length control in Loose tube 2 is 0.01%.
S5：Multifiber Loose tube 2 around center reinforcemen 1 unidirectionally twist and, and by twist and after multifiber Loose tube 2 wrap
In in waterstop, cable core is formed；
S6：The tension force for adjusting the pay off rack of reinforcer 10 is 1~2 ㎏, and the pay off rack of reinforcer 10 makes the level of two reinforcements 10
At the uniform velocity pass through wire parallel module both sides；
S7：The laying tension for controlling cable core is 2~3 ㎏, makes center of the cable core at the uniform velocity by wire parallel module；
S8：The polyethylene, low smoke halogen-free flame-retardant polyolefin or polyurethane elastomer of melting are passed through spreader by main extruder
In the mould for getting into main extruder head, oversheath 6 is formed, and the cross section of the host cavity 5 of oversheath 6 is ellipse, cable
Core is located in the host cavity of oversheath 6, and the minor axis vertex of the outer surface and the cross section of 6 host cavity of oversheath 5 of cable core is tangent, two
During reinforcer 10 is located between the inner surface of oversheath 6 and outer surface, and two reinforcements 10 are with the center reinforcemen 1 of cable core
The heart is symmetrical arranged；
S9：Two subsidiary extruders are each to extrude a pair of vittas in the outer surface of oversheath 6, and each pair tag line 7 is close to host cavity 5
One major axis summit of cross section, and two tag lines, 7 lines and the close length of this pair of tag line 7 in each pair tag line 7
Axle summit is tangent, so far, forms optical cable；
S10：Optical cable is sequentially passed through into the first water-saving groove that temperature is 45 DEG C ± 5 DEG C and the second water-saving groove that temperature is 15 DEG C
Cooling and shaping, and dry up cable surface.By the cooling step by step of tank temperature, optical fiber oversheath 6 shrinks, and oversheath 6 is with strengthening
It is in close contact between part 10, so that the internal stress of oversheath 6 is eliminated, while keep the profile of optical cable indeformable, and flat appearance is smooth.
S11：Optical cable is closed on disk tool, so far, prepares and completes.
Wherein, two vittas color is different, and two vitta colors in each pair vitta are identical, and the face of every vitta
Color is different from the color of oversheath 6, and the optical fiber loose tube 2 in optical cable is the colored optical fiber 3 in 6, every optical fiber loose tube 2
For 12.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (10)
1. a kind of optical cable that easily puts in a skylight, it is characterised in that it includes：
It is hollow to form host cavity (5) in oversheath (6), the oversheath (6), and the host cavity (5) has long end and short
End；
Internal layer (11), the internal layer (11), which is contained in the host cavity (5), and the internal layer (11), is provided with fiber unit, and
Gap (12) is formed between the long end of the host cavity (5) and the outer wall of the internal layer (11), and the internal layer (11) is by institute
Oversheath (6) inwall is stated to be held at the short end；Meanwhile,
The tag line (7) that the outer surface of the oversheath (6) extends provided with least one pair of along oversheath (6) length of cable direction,
And the position of tag line described in a pair (7) is configured such that on the cross section of optical cable, between two tag lines (7) and it is located at
The every bit on oversheath (6) surface passes through the gap (12) to the line between the optical cable cable heart.
2. a kind of optical cable that easily puts in a skylight as claimed in claim 1, it is characterised in that：The cross section of the host cavity (5) is ellipse
Circle, the long end of the host cavity (5) is the major axis of host cavity (5) cross section, and the short end of the host cavity (5) is host cavity (5)
The short axle of cross section, internal layer (11) outer wall is in contact with two minor axis vertex of host cavity (5) cross section, the tag line
(7) it is 2 pairs, and each pair tag line (7) is two in a major axis summit of host cavity (5) cross section, each pair tag line (7)
The line major axis summit close with this pair of tag line (7) is tangent between tag line (7).
3. a kind of optical cable that easily puts in a skylight as claimed in claim 2, it is characterised in that：The outer surface of the oversheath (6) is provided with
Two pairs of tag lines (7), two pairs of tag lines (7) are respectively first pair of tag line (8) and second pair of tag line (9), described
The one major axis summit of close host cavity (5) cross section of a pair of tag lines (8), and two tag lines (7) of first pair of tag line (8)
Between line and the major axis summit it is tangent, second pair of tag line (9) close to host cavity (5) cross section another major axis top
Line and the major axis summit between point, and two tag lines (7) of second pair of tag line (9) is tangent.
4. a kind of optical cable that easily puts in a skylight as claimed in claim 3, it is characterised in that：The color of two pairs of tag lines (7) with
The color of the oversheath (6) is different, and two tag line (7) colors of first pair of tag line (8) are identical, and described second
Two tag line (7) colors to tag line (9) are identical, and the color of first pair of tag line (8) and second pair of tag line
(9) color is different.
5. the as claimed in claim 1 a kind of optical cable that easily puts in a skylight, it is characterised in that the fiber unit is from the inside to the outside successively
For：
Center reinforcemen (1)；
Multifiber Loose tube (2), multifiber Loose tube (2) uniform ring around being distributed in center reinforcemen (1) surrounding, and
Comprising many colored optical fibers (3) in every optical fiber loose tube (2)；And
Water blocking layer (4).
6. a kind of optical cable that easily puts in a skylight as claimed in claim 5, it is characterised in that：Add in the oversheath (6) provided with two
Strong part (10), the reinforcer (10) is located between the inner surface of oversheath (6) and outer surface, and two reinforcements (10) are in
Heart reinforcer is symmetrical arranged centered on (1), the colored optical fiber (3) in the optical fiber loose tube (2) be 12, and 12 coloured light
Water blocking yarn is filled between fine (3).
7. a kind of optical cable that easily puts in a skylight as claimed in claim 5, it is characterised in that：The material of the center reinforcemen (1) is
FRP, aramid yarn strengthen FRP, the FRP with bed course or the KFRP with bed course, and the material of the optical fiber loose tube (2) is to gather to benzene two
Formic acid butanediol ester or modified polypropene, the material of the oversheath (6) is polyethylene, low smoke halogen-free flame-retardant polyolefin or poly- ammonia
Ester elastomer.
8. a kind of optical cable that easily puts in a skylight as claimed in claim 5, it is characterised in that：The external diameter of the optical fiber loose tube (2) is
1.20~1.25mm, wall thickness be 0.10~0.12mm, a diameter of 250 μm of colored optical fiber (3), oversheath (6) it is a diameter of
8.0mm。
9. a kind of manufacture method for the optical cable that easily puts in a skylight, it is characterised in that including：
S1：The tension force for adjusting optical fiber pay-off rack is 150~180g, and makes 1~12 a diameter of 250 μm of colored optical fiber (3)
It is even to pass through optical fiber line concentration mould；
S2：The tension force for adjusting water blocking yarn pay off rack is 180~200g, and makes water blocking yarn uniformly through water blocking yarn line concentration mould；
S3：The polybutylene terephthalate (PBT) or modified polypropene of melting by spreader, are got into shaping and squeeze pipe by extruder
In mould, the interior Dry-type fiber loose tube (2) containing water blocking yarn and 1~12 colored optical fiber (3) is formed；
S4：It is 15 that optical fiber loose tube (2), which sequentially passes through the first water-saving groove, auxiliary traction machine and the temperature that temperature is 60 DEG C ± 5 DEG C,
DEG C the second water-saving groove be cooled and shaped, be made shaping external diameter be 1.20~1.25mm, wall thickness be 0.10~0.12mm optical fiber
Loose tube (2), and dry up optical fiber loose tube (2) surface；
S5：Multifiber Loose tube (2) around center reinforcemen (1) unidirectionally twist and, and will twist and after multifiber Loose tube (2)
It is wrapped in waterstop, forms cable core；
S6：The tension force for adjusting reinforcer (10) pay off rack is 1~2 ㎏, and reinforcer (10) pay off rack makes two reinforcements (10) water
Even speed passes through wire parallel module both sides；
S7：The laying tension for controlling cable core is 2~3 ㎏, makes center of the cable core at the uniform velocity by wire parallel module；
S8：Main extruder gets into the polyethylene, low smoke halogen-free flame-retardant polyolefin or polyurethane elastomer of melting by spreader
In the mould of main extruder head, oversheath (6) is formed, and the cross section of the host cavity (5) of oversheath (6) is ellipse,
Cable core is located in oversheath (6) host cavity, and the minor axis vertex of the outer surface and oversheath (6) host cavity (5) cross section of cable core
Tangent, two reinforcements (10) are located between the inner surface of oversheath (6) and outer surface, and two reinforcements (10) are with cable core
Center reinforcemen is symmetrical arranged centered on (1)；
S9：Two subsidiary extruders are each to extrude a pair of vittas in oversheath (6) outer surface, and each pair tag line (7) is close to host cavity
(5) a major axis summit of cross section, and line and this pair of tag line (7) institute between two tag lines (7) in each pair tag line (7)
Close major axis summit is tangent, so far, forms optical cable；
S10：Optical cable is sequentially passed through into the first water-saving groove that temperature is 45 DEG C ± 5 DEG C and the second water-saving groove that temperature is 15 DEG C cooling
Sizing, and dry up cable surface；
S11：Optical cable is closed on disk tool, so far, prepares and completes.
10. a kind of optical cable that easily puts in a skylight as claimed in claim 9, it is characterised in that：Color two vittas is different, each pair
Two vitta colors in vitta are identical, and the color of every vitta is different from the color of oversheath (6).
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| CN108957661A (en) * | 2018-08-07 | 2018-12-07 | 江苏亨通光电股份有限公司 | Fire-retardant air-blowing micro-cable |
| CN109031560A (en) * | 2018-09-11 | 2018-12-18 | 南京华信藤仓光通信有限公司 | A kind of identification of colour bar puts in a skylight optical cable and the production method of constructing |
| CN110549579A (en) * | 2019-09-29 | 2019-12-10 | 广东亨通光电科技有限公司 | extrusion molding device and optical cable roundness improving process |
| CN111399150A (en) * | 2020-04-29 | 2020-07-10 | 西安西古光通信有限公司 | Separable butterfly-shaped leading-in optical cable assembly and optical cable stripping method based on same |
| CN111708136A (en) * | 2020-06-29 | 2020-09-25 | 杭州富通通信技术股份有限公司 | Outdoor small-diameter optical cable |
| CN111781689A (en) * | 2020-07-27 | 2020-10-16 | 杭州富通通信技术股份有限公司 | Optical cable |
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| CN111399150A (en) * | 2020-04-29 | 2020-07-10 | 西安西古光通信有限公司 | Separable butterfly-shaped leading-in optical cable assembly and optical cable stripping method based on same |
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| CN111708136B (en) * | 2020-06-29 | 2023-03-28 | 杭州富通通信技术股份有限公司 | Outdoor small-diameter optical cable |
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