CN105938229A - Cicada-repellent butterfly-shaped optical cable for FTTH, and manufacturing method thereof - Google Patents
Cicada-repellent butterfly-shaped optical cable for FTTH, and manufacturing method thereof Download PDFInfo
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- CN105938229A CN105938229A CN201610446542.0A CN201610446542A CN105938229A CN 105938229 A CN105938229 A CN 105938229A CN 201610446542 A CN201610446542 A CN 201610446542A CN 105938229 A CN105938229 A CN 105938229A
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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
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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
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
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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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- Optics & Photonics (AREA)
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Abstract
The invention discloses a cicada-repellent butterfly-shaped optical cable for FTTH, and a manufacturing method thereof. The method comprises the following steps: 1, performing wire drawing on a fiber prefabricated rod; 2, screening a fiber; 3, detecting the fiber; 4, producing a butterfly-shaped optical cable; 5, placing tearing ropes; 6, performing code-spray printing on the sheath surface of the butterfly-shaped optical cable; 7, extruding a nylon sheath layer; and 8, testing mechanical performance. The optical cable comprises the butterfly-shaped optical cable coated by a nylon sheath, the butterfly-shaped optical cable comprises a low-smoke halogen-free flame-retardant sheath whose two sides are provided with V-shaped grooves, the tearing ropes are placed in the V-shaped grooves, the center of the low-smoke halogen-free flame-retardant sheath disposed at the same parallel surface with the V-shaped grooves is provided with the fiber, a pair of non-metal reinforcement members are symmetrically distributed at the two sides of the fiber, and center lines of the two circular non-metal reinforcement members are disposed at the same plane with the center line of the fiber. According to the invention, the tension and anti-compression performance of the optical cable are improved, and the nylon sheath is more easily peeled by use of the tearing ropes; and the optical cable can have a protection effect of preventing the optical cable from cicada bites.
Description
Technical field
The invention belongs to optical cable optical cable manufacturing technology field, specifically, relate to a kind of novel FTTH with anti-
Cicadae butterfly optical cable and preparation method thereof.
Background technology
Along with light net construction quickening and the speed-raising in broadband, it is achieved city 10M, the country of rural area optical fiber to village " carries
Prompt drop takes " target, fiber optic network is covered and breaks through 200,000,000 families, optical user scale will break through 7,600 ten thousand one-tenth
The urgent task of 4G networking covered, accelerate for realizing the target network of key cities key area at present.Its
Continuation is popularized by the scale of middle fiber entering household in rural area and city, fiber to the home (Fiber to the Home,
FTTH) refer to from backbone network to community user between the access network stage all use optical fiber, it is achieved voice, number
According to and a kind of access way of all kinds of intellectualizing system function.Along with the fast development of optical fiber cable, order wire
Road uses the most frequently under various complex environments, suffers that the frequency of the damage of Wildlife also becomes in rising
Gesture, (pecks including rodent (Sciurus vulgaris, mouse), insects (Cicadae, Formica fusca, Blatta seu periplaneta etc.) and birds
Wood bird, Corvus macrorhuchus etc.) infringement, and they to the extent of damage of optical cable in ascendant trend year by year.Especially exist
The leading in cable that south China area fiber entering household is used is affected relatively big by Cicadae evil, at these areas, Cicadae warp
Often can be attached on optical cable, according to its life habit, Cicadae can utilize its sharp-pointed mouthpart and tube for laying eggs to thrust light
Cable, destroys optical cable, and destroys the optical fiber in optical cable further, affects the transmission performance of optical fiber.
Grant number is CN201993505U, title Novel self-supporting bow-type cicada-repellent drop cable；Grant number
CN203930153U, title self-bearing type access network with anti-Cicadae opposite sex optical cable, anti-Cicadae in above granted patent the most
Optical cable has employing sheet metal to carry out anti-Cicadae and the anti-Cicadae of chute type two kinds, although have good effect in terms of anti-Cicadae
Really, can effectively avoid the sharp-pointed mouthpart of Cicadae and tube for laying eggs to damage optical fiber, but still deposit in configuration aspects
In certain drawback, the optical cable wherein containing sheet metal can cause the weight of leading in cable to become big, it is deposited to add
If difficulty, chute type optical cable can cause the problems such as optical cable baring inconvenience.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of anti-Cicadae butterfly optical cable of FTTH
And preparation method thereof, the present invention, by two piece stiffeners are distributed in optical fiber both sides, improves the anti-of optical cable
Draw and compressive property.Optic fiber distribution makes and continued access for convenience, in the V-groove of butterfly structure, adds
Tear rope, utilizes tear rope to be easier to nylon sheath wire strip off.The one layer of rectangle extruded outside optical cable transparent
Fire-retardant nylon sheath, plays the protective effect to cable interior optical fiber.
It is an object of the invention to be realized by following technical proposals.
A kind of FTTH by anti-Cicadae butterfly optical cable manufacture method, comprises the following steps:
1) wire drawing of preform: preform is placed in heating furnace fusing, then utilizes gravity
Effect is drawn into optical fiber, by UV resin, optical fiber is carried out primary coating subsequently, and the thickness of coating is 25 μm
～30 μm；Then solidified by UV lamp and He air cooling wall, carry out the coating of UV resin secondary, and use
UV lamp solidifies, and the thickness of secondary coating is 25 μm～30 μm；
2) the optical fiber force after secondary coating solidification is carried out intensity screening and point dish processes；
3) detection of optical fiber: respectively the physical dimension of optical fiber and the pad value of 1310nm, 1550nm are carried out
Strict test；
4) production of butterfly optical cable: by one or how with optical fiber and two circular reinforcements are simultaneously by butterfly light
Cable extrusion head, extrudes out one layer of low-smoke halogen-free flame-retardant sheath material in the outside of optical fiber and two circular reinforcements
Material, in optical fiber and non-metal reinforcement member being coated on, the sheath outward appearance of extrusion is butterfly；
5) placement of tear rope: while butterfly optical cable material is by extrusion head, by tear rope and butterfly
Cable material is simultaneously placed in extrusion head extruded mould, and ensures that two tear ropes are in the V of butterfly optical cable
In type groove；
6) jacket surface at butterfly optical cable carries out coding lettering；
7) the extruding of nylon sheath wire layer: squeeze in the outside of butterfly optical cable and tear rope is by nylon extruder head
Tubing die extrudes out one layer of fire-retardant nylon material；
8) measuring mechanical property: according to butterfly optical cable standard, optical cable finished product is carried out measuring mechanical property, obtain
Meet the anti-Cicadae butterfly optical cable of performance requirement.
Preferably, described step 3) in, " access network is with bending loss not according to YD/T 1954-2013 for optical fiber
Sensitive Characteristics of Single-mode Optical Fibers " industry standard tests, fiber geometries size should meet standard value 245 ±
5 μm, the pad value of 1550nm wavelength should be not more than the pad value of 0.21dB/km, 1310nm wavelength and should be not more than
0.35dB/km。
Preferably, described step 4), follow the steps below:
1. by one or how to carry out putting fibre with fiber reel is placed in optical fiber pay-off rack, putting fine tension force is 60～90g,
Using pay off rack to be released by nonmetallic reinforcement, material is aramid yarn and resin compounded forms, and reinforcement is straight
Footpath Φ 0.4～0.6mm, tensile modulus of elasticity > 52Gpa；
2. the centrage of optical fiber and the centerline of two circular non-metal reinforcement members are released same from pay off rack
In plane, and optical cable reinforcement lays respectively at the both sides of optical fiber, relative to two stiffeners of optical fiber symmetrically
Distribution；Optical fiber is simultaneously into circular non-metal reinforcement member exempts to adjust extrusion head, by exempting from tune extrusion head
Control the relative position of optical fiber and circular non-metal reinforcement member；
3. time by exempting to adjust head, the outside at optical fiber and circular non-metal reinforcement member is extruded out one layer white
Low-smoke halogen-free flame-retardant sheath material, low-smoke and flame retardant material take-up is fully dried in storage tank, it is ensured that in material not
There is steam；
The sectional dimension of the low-smoke non-halogen flame-retardant optical cable 4. extruded out is 1.2～1.6mm × 2.2～2.6mm, produces
Speed is 100m/min；
The most subsequently by first tank and second tank, carry out after then using Low Temperature Plasma Treating
Coding lettering processes, and finally carries out take-up.
Further, described step 3. in, extruding machine is divided into four fuselage districts, Ji Jing district and die orifice district, wherein
Fuselage I district is to fuselage IV district successively near Ji Jing district, and Ji Jing district is in the middle of fuselage district and die orifice district, and machine
Body I district temperature is 150 DEG C, and fuselage II district temperature is 165 DEG C, and fuselage III district temperature is 170 DEG C, fuselage
IV district temperature is 180 DEG C, and Ji Jing district temperature is 180 DEG C, and head district temperature is 185 DEG C, in the temperature in die orifice district
Degree is 190 DEG C, is stepped up to the temperature at die orifice from fuselage I district.
Preferably, step 7) in, extruding of nylon sheath wire layer comprises the steps:
1. use fire-retardant nylon 12 material, baking material case uses the temperature baking material 1.5～2.5 of 100～110 DEG C
Hour；
2. the butterfly cable produced in a upper operation is released from pay off rack, release two tear ropes, tear simultaneously
The position of rope is in 2 V-groove of butterfly optical cable, and laying tension is 8N, then goes through nylon extrusion
In head；
3. at head, use vacuum extractor, the air between butterfly optical cable and nylon sheath wire taken out completely,
Avoid wherein producing bubble；In head, mould uses tubular molding tool；
4. the optical cable extruded is passed through one tank and two road tanks respectively, finally carry out take-up, obtain finished product
Light.
Further, in step 4) and step 7) in, described first tank temperature is 75～90 DEG C, second
Road tank temperature 20～30 DEG C, takeup tension is 12～16N.
Further, in step 7) the 2. in step, nylon extruding machine is divided into four fuselage districts, Ji Jing district and mould
Mouth region, wherein fuselage I district is to fuselage IV district successively near Ji Jing district, and Ji Jing district is in fuselage district and die orifice district
Between, and the temperature in fuselage I district is 220 DEG C, fuselage II district temperature is 225 DEG C, and fuselage III district temperature is
230 DEG C, fuselage IV district temperature is 230 DEG C, and Ji Jing district temperature is 235 DEG C, and head district temperature is 235 DEG C,
Temperature in die orifice district is 240 DEG C.
Preferably, step 3) in, for 2 cores or the butterfly optical cable of 4 cores, need that optical fiber is carried out optical fiber and
Color.
A kind of FTTH that the present invention is prepared according to said method is with anti-Cicadae butterfly optical cable, including nylon sheath wire,
And the butterfly optical cable being coated in nylon sheath wire, described butterfly optical cable includes that both sides are provided with the low cigarette of V-groove
Halogen-free flameproof sheath, is placed with tear rope in described V-groove, with low at same parallel surface of described V-groove
Cigarette halogen-free flameproof sheath center is provided with optical fiber, and a pair non-metal reinforcement member is symmetrically distributed in the both sides of described optical fiber,
And the centerline of the centrage of two circular non-metal reinforcement members and optical fiber is at grade.
Preferably, described low-smoke halogen-free flame-retardant sheath is the fire retardant jacket being provided with and hanging neck, and nonmetal messenger wire runs through
In hanging neck.
The invention has the beneficial effects as follows:
1. optical fiber both sides are distributed two stiffeners, improve tension and the compressive property of optical cable.Optical fiber
The centrage of centrage and two reinforcements is on same plane, and reinforcement is distributed in the both sides of optical cable,
When optical cable stress, first reinforcement undertakes pulling force, it is to avoid the pad value caused because of optic fibre force increases.This
V-groove in outer butterfly structure facilitates cable jacket to separate with optical fiber.
2. have employed non-metal reinforcement member, cable configuration is nonconductive optical fiber cable, non-conductive, can again minefield with
And lay with power circuit, applied range simultaneously.
2. the transparent flame-retarding nylon sheath wire of the one layer of rectangle extruded outside optical cable, owing to its smooth surface is wear-resisting and
Contractility is good, and mouthpart and tube for laying eggs that Cicadae is sharp-pointed are difficult to thrust at jacket surface, if thrusting, and the hole stung
Hole can be shunk at short notice, plays the protective effect to cable interior optical fiber.Additionally there is well resistance
Combustion performance, can be in indoor use, the feature of its low friction, also makes it carry out poling being more easy to.
Optic fiber distribution makes and continued access the most for convenience, in the V-groove of butterfly structure, adds tear rope,
Utilize tear rope to be easier to nylon sheath wire strip off, by optical cable V-groove, cable jacket is divided with optical fiber subsequently
From.
4. the coding lettering of optical cable is on butterfly cable surface, no longer carries out spray printing, owing to adopting outside nylon sheath wire
Be transparent nylon material, the lettering in butterfly cable still can clearly indicate, and it also avoid
During life-time service, surface lettering comes off and the situation of None-identified.
Accompanying drawing explanation
Fig. 1 is the novel FTTH of FTTH with anti-Cicadae butterfly optical cable sectional view (non-self-bearing type)；
Fig. 2 is the novel FTTH of FTTH with anti-Cicadae butterfly optical cable sectional view (self-bearing type)；
Fig. 3 (a) and 3 (b) are self-bearing type and non-self-bearing type butterfly optical cable schematic cross-section respectively；
Fig. 4 is that nylon outer sheath is torn schematic diagram by tear rope.
In figure, 1. non-metal reinforcement member；2. optical fiber；3. tear rope；4.V type groove；5. low-smoke non-halogen flame-retardant protects
Set；6. nylon sheath wire；7. hang neck；The most nonmetal messenger wire.
Detailed description of the invention
The invention will be described in further detail with embodiment below in conjunction with the accompanying drawings, but is not intended as doing invention
The foundation of any restriction.
As it is shown in figure 1, be non-self-bearing type FTTH with novel anti-Cicadae butterfly optical cable sectional view, be wherein coated on Buddhist nun
Butterfly optical cable in dragon sheath 6, is provided with the low-smoke halogen-free flame-retardant sheath 5 of V-groove 4, V-type including both sides
Groove 4 is placed with tear rope 3, sets at low-smoke halogen-free flame-retardant sheath 5 center of same parallel surface with V-groove 4
Having optical fiber 2, optical fiber 2 to be protected in the middle of optical cable, stiffener 1 is distributed in the both sides of optical fiber, relative to light
Fibre is symmetric, and the centerline of the centrage of optical fiber and reinforcement is at grade.At optical fiber 2
Extrude one layer of low-smoke halogen-free flame-retardant sheath 5 with the outside of stiffener 1, and have at the horizontal level of optical fiber 1
Relative to the V-groove 4 that optical fiber is symmetrical, although this V-groove 4 structure makes cable jacket and the convenient stripping of optical fiber,
Not at one layer of nylon sheath wire 6 of low-smoke halogen-free flame-retardant sheath 5 outer cladding, due to the geometric properties of V-groove 4, make
Cicadae has good impetus to be thrust in optical cable by tube for laying eggs, and this V-groove 4 position and optical fiber horizontal, produces
Oviduct is easy to after thrusting damage optical fiber, destroys the transmission performance of optical fiber, may cause optical fiber disconnected fibre time serious,
Cause communication disruption completely.
Being illustrated in figure 2 the novel anti-Cicadae butterfly optical cable sectional view of self-bearing type FTTH, this optical cable is in non-self-supporting
Formula FTTH hangs neck 7 and nonmetal messenger wire 8 with adding on the basis of novel anti-Cicadae butterfly optical cable, plays self-supporting
The effect of formula.The most nonmetal messenger wire uses FRP material, can use in minefield.
Therefore outside low-smoke halogen-free flame-retardant sheath, then one layer of nylon sheath wire 6 is extruded out, this nylon sheath wire extrusion
Profile is rectangle and smooth surface rub resistance, and the tube for laying eggs of Cicadae is difficult to find impetus at this jacket surface, from
And protect the optical fiber in cable.
Being respectively self-bearing type and non-self-bearing type butterfly optical cable as shown in Fig. 3 (a), (b), this butterfly optical cable uses
The butterfly optical cable of the little structure of 1.4mm*2.4mm, and on this butterfly optical cable, carry out coding lettering, prevent coding
The situation that the coding caused on smooth nylon outer sheath comes off after being difficult to attachment, or long-time use occurs.
Bring certain difficulty, therefore at V-groove 4 also to the stripping of optical fiber with the nylon sheath wire 6 of Smooth
Middle addition tears rope 3, and the end at optical cable just can utilize tear rope to be peeled off by the nylon sheath wire 6 of optical cable, as
Shown in Fig. 4.By V-groove 4, low-smoke halogen-free flame-retardant sheath 5 is peeled off with optical fiber 2 the most again.
FTTH novel anti-Cicadae butterfly optical cable and preparation method thereof the complete technique stream of the present invention is described below
Journey, comprises the steps:
1) wire drawing of preform: prefabricated rods uses G.657 preform, the optical fiber that this optical wand draws
Have the advantages that bending property is excellent.First vertical for preform is hung on support, caput under, rod
Tail is upper, and caput is first in the heating furnace of 2000 DEG C progressively melting, and utilizes action of gravity to be drawn into
The optical fiber of 125 μm, carries out primary coating between 180 μm-185 μm by UV resin subsequently, then leads to
Carry out secondary after crossing the solidification of UV lamp and He air cooling wall and be coated to 240 μm-245 μm, the light that finally will draw
Fibre is received on fiber reel tool by take-up stand.
2) screening of optical fiber: in order to ensure the mechanical performance of optical fiber, it is to be ensured that optical fiber is applying 0.69Mpa's
Power is the most fine after carrying out intensity screening, it is ensured that the follow-up optical fiber used in optical cable has good mechanical performance.
By dish on the optical fiber after secondary coating solidification, it is subsequently transferred to optical fiber screening operation, optical fiber force is carried out strong
Degree screening and point dish process；
3) detection of optical fiber: to screening qualified after optical fiber carry out cladding diameter, non-circularity of cladding, core is non-round
The geometric parameters such as degree are tested, mode field diameter, cutoff wavelength, the test of the optical characteristics such as optical fiber attenuation,
Optical fiber attenuation value should meet table 1 below, strictly controls the qualified of each optical fiber parameter.Qualified optical fiber proceeds to
Next process, does not circulates.
Presumable optical fiber coloring: if butterfly optical cable middle finger uses an optical fiber, without colouring, adopt
With detecting qualified true qualities optical fiber after wire drawing, think that only one optical fiber need not additionally make a distinction.
But for 2 cores or the butterfly optical cable of 4 cores, it is necessary to optical fiber is carried out coloring treatment, facilitate the knowledge in later stage
Not.Dyed layer thickness is generally about 5 μm, and the fibre external diameters after coloring is 250 μm-255 μm.After coloring
Optical fiber also need to its curing degree and decay carry out extra inspection.With in step 3), by qualified optical fiber
It is transferred to next process, does not circulates.
4) production of butterfly optical cable: by one or how simultaneously pass through extruding machine with optical fiber and two circular reinforcements
Head, extrudes out one layer of low-smoke halogen-free flame-retardant sheath outside it, carries out coding lettering simultaneously.Butterfly optical cable is raw
Product comprises the following steps:
1. by one or how to carry out putting fibre with fiber reel is placed in optical fiber pay-off rack, putting fine tension force is that 80g is (real
Executing example 1 and putting fine tension force for the novel anti-Cicadae butterfly optical cable of 80g, embodiment 2 self-bearing type FTTH is 60g),
Using pay off rack to be released by nonmetallic reinforcement, material is aramid yarn and resin compounded forms, and reinforcement is straight
Footpath Φ 0.5mm, tensile modulus of elasticity > 52Gpa.
2. release optical fiber from pay off rack and be positioned at the both sides of two non-metal reinforcement members of releasing, and optical fiber and non-gold
Belong to reinforcement to be simultaneously into and exempts to adjust extrusion head, exempt to adjust extrusion head reasonably to control optical fiber and nonmetal
The relative position of reinforcement.
3. time by exempting to adjust head, the outside at optical fiber and reinforcement is extruded out one layer of white low smoke and zero halogen to hinder
Combustion protective cover material, low-smoke and flame retardant material take-up is fully dried in storage tank, it is ensured that there is not steam in material.
Extruding machine is divided into four fuselage districts, Ji Jing district and die orifice district, and wherein fuselage I district is the most close to fuselage IV district
Ji Jing district, Ji Jing district is between fuselage district and die orifice district, and 150 DEG C of fuselage I district, and fuselage II district is 165 DEG C,
Fuselage III district is 170 DEG C, and fuselage IV district is 180 DEG C, and Ji Jing district temperature is 180 DEG C, and head district temperature is
185 DEG C, the temperature in die orifice district is 190 DEG C, is stepped up to the temperature at die orifice from fuselage I district.
The sectional dimension of the low-smoke non-halogen flame-retardant optical cable 4. extruded out is 1.4mm × 2.4mm, and speed of production is
100m/min。
The most subsequently by first tank and second tank, carry out after then using Low Temperature Plasma Treating
Coding lettering processes, and finally carries out take-up.Wherein first tank temperature is 85 DEG C, second tank temperature
25 DEG C, takeup tension is 15N.
5) placement of tear rope: by the butterfly optical cable of tear rope and production simultaneously by extrusion head, and ensure
Two tear ropes are in the V-groove of butterfly cable.
6) the extruding of nylon sheath wire layer: extrude out one layer of fire-retardant nylon material in the outside of butterfly cable and tear rope.
Concrete production craft step is as follows:
1. using import fire-retardant nylon material, nylon is transparent color, uses the temperature of 100 DEG C in baking material case
Baking material 2 hours.
2. the butterfly cable produced in a upper operation is released from pay off rack, release two tear ropes, tear simultaneously
The position of rope is in 2 V-groove of butterfly optical cable, and laying tension is 8N, then goes through nylon extrusion
In head, nylon extruding machine is divided into four fuselage districts, Ji Jing district and die orifice district, and wherein fuselage I district is to fuselage
IV district is successively near Ji Jing district, and Ji Jing district is between fuselage district and die orifice district, and the temperature in fuselage I district is
220 DEG C, fuselage II district is 225 DEG C, and fuselage III district is 230 DEG C, and fuselage IV district is 230 DEG C, Ji Jing district
Temperature is 235 DEG C, and head district temperature is 235 DEG C, and the temperature in die orifice district is 240 DEG C.
3. at head, use vacuum extractor, the air between butterfly optical cable and nylon sheath wire taken out completely,
Avoid wherein producing bubble.In head, mould uses tubular molding tool, core rod 2.5mm/3.5mm, die sleeve
5.2mm。
4. (embodiment 1 is 85 DEG C, embodiment 2 self-bearing type FTTH respectively the optical cable extruded to be passed through 85 DEG C
Be 75 DEG C with novel anti-Cicadae butterfly optical cable) one tank and 25 DEG C (embodiment 1 is 25 DEG C, embodiment 2
Self-bearing type FTTH is 20 DEG C with novel anti-Cicadae butterfly optical cable) two road tanks, finally carry out take-up, take-up
Tension force is 15N.The sectional dimension of finished cable is 2mm × 3mm, and nylon thickness is 0.3mm.
7) measuring mechanical property: inside cable needs good mechanical performance, therefore according to standard-required pair
Optical cable finished product carries out measuring mechanical property, and the project of test has the stretching of optical cable, optical cable to flatten, optical cable impact
Test, tests optical fiber decay indices under every measuring mechanical property the most qualified after test.
Different embodiment is given below and further illustrates the present invention.
Embodiment 1: be illustrated in figure 1 the novel anti-Cicadae butterfly optical cable sectional view of non-self-bearing type FTTH, its bag
Containing non-metal reinforcement member 1, optical fiber 2, tear rope 3, V-groove 4, low-smoke halogen-free flame-retardant sheath 5 and Buddhist nun
Dragon sheath 6.Optical fiber 2 is the B6 optical fiber of YD/T 1954 regulation, and optical fiber may contain dyed layer.Nonmetal add
Strong part uses aramid yarn and resin composite materials, the strength of materials of 0.5mm > 52Gpa.Tear rope can use
Aramid fiber material.Use white halogen-free low-smoke flame retardant material as the outer jacket of butterfly cable, the cross section chi of butterfly cable
Very little for 1.4mm × 2.4mm, use transparent import nylon material as the outer jacket of anti-Cicadae butterfly optical cable, cut
Face a size of 2mm × 3mm, nylon thickness is 0.3mm.Other technological processes are ibid.
Embodiment 2: being illustrated in figure 2 the novel anti-Cicadae butterfly optical cable sectional view of self-bearing type FTTH, it comprises
There are non-metal reinforcement member 1, optical fiber 2, tear rope 3, V-groove 4, low-smoke halogen-free flame-retardant sheath 5 and nylon
Sheath 6, hangs neck 7, nonmetal messenger wire 8.Add on the basis of novel anti-Cicadae butterfly optical cable at the non-FTTH of calling oneself
Add and hung neck and messenger wire.First the production of butterfly self-support cable is carried out, subsequently at butterfly self-support cable
Outside extrudes the nylon material of layer of transparent.Production technology according to non-self-bearing type FTTH by novel anti-Cicadae butterfly
Optical cable technique, but need to change the mould of self-support cable aborning, and nonmetal messenger wire actinobacillus device,
Wherein hang the neck nonmetal messenger wire of a size of 1mm × 1mm and use that the FRP of many Φ 0.5mm is stranded to be formed.
The FTTH of the present invention technical parameter index with anti-Cicadae butterfly optical cable is given below by table 1:
The technical parameter index of table 1 optical cable
| Embodiment | 1 | 2 | Common butterfly optical cable |
| Optical fiber attenuation (1550nm) | 0.19dB/km | 0.20dB/km | 0.21dB/km |
| Optical fiber attenuation (1310nm) | 0.34dB/km | 0.34dB/km | 0.35dB/km |
| Whether there is messenger wire | No | It is | No |
| Nylon thickness | 0.3mm | 0.3mm | Nothing |
| Tensile strength (short-term) | 300N | 600N | 200N |
| Compressive property (short-term) | 3000N | 3000N | 2200N |
From above table 1 it can be seen that the FTTH of the present invention tensile strength of anti-Cicadae butterfly optical cable and crushing resistance
Existing optical cable can be all higher than, improve tension and the compressive property of optical cable.And this structure is easy to nylon sheath wire
Strip off, and the protective effect to cable interior optical fiber can be played.
The invention is not limited in above-described embodiment, on the basis of technical scheme disclosed by the invention, ability
The technical staff in territory is according to disclosed technology contents, it is not necessary to performing creative labour just can be to therein one
A little technical characteristics are made some and are replaced and deformation, and these are replaced and deformation is the most within the scope of the present invention.
Claims (10)
1. a FTTH is by anti-Cicadae butterfly optical cable manufacture method, it is characterised in that comprise the following steps:
1) wire drawing of preform: preform is placed in heating furnace fusing, then utilizes gravity
Effect is drawn into optical fiber, by UV resin, optical fiber is carried out primary coating subsequently, and the thickness of coating is 25 μm
～30 μm；Then solidified by UV lamp and He air cooling wall, carry out the coating of UV resin secondary, and use
UV lamp solidifies, and the thickness of secondary coating is 25 μm～30 μm；
2) screening of optical fiber: the optical fiber force after secondary coating solidification is carried out intensity screening and point dish processes；
3) detection of optical fiber: respectively the physical dimension of optical fiber and the pad value of 1310nm, 1550nm are carried out
Strict test；
4) production of butterfly optical cable: by one or how with optical fiber and two circular reinforcements are simultaneously by butterfly light
Cable extrusion head, extrudes out one layer of low-smoke halogen-free flame-retardant sheath material in the outside of optical fiber and two circular reinforcements
Material, in optical fiber and non-metal reinforcement member being coated on, the sheath outward appearance of extrusion is butterfly；
5) placement of tear rope: while butterfly optical cable material is by extrusion head, by tear rope and butterfly
Cable material is simultaneously placed in extrusion head extruded mould, and ensures that two tear ropes are in the V of butterfly optical cable
In type groove；
6) jacket surface at butterfly optical cable carries out coding lettering；
7) the extruding of nylon sheath wire layer: squeeze in the outside of butterfly optical cable and tear rope is by nylon extruder head
Tubing die extrudes out one layer of fire-retardant nylon material；
8) measuring mechanical property: according to butterfly optical cable standard, optical cable finished product is carried out measuring mechanical property, obtain
Meet the anti-Cicadae butterfly optical cable of performance requirement.
A kind of FTTH the most according to claim 1 is by anti-Cicadae butterfly optical cable manufacture method, and its feature exists
In, described step 3) in, optical fiber is according to YD/T 1954-2013 " the insensitive single mode of access network bending loss
Optic fibre characteristic " industry standard tests, and fiber geometries size should meet standard value 245 ± 5 μm, 1550nm
The pad value of wavelength should be not more than the pad value of 0.21dB/km, 1310nm wavelength should be not more than 0.35dB/km.
A kind of FTTH the most according to claim 1 is by anti-Cicadae butterfly optical cable manufacture method, and its feature exists
In, described step 4), follow the steps below:
1. by one or how to carry out putting fibre with fiber reel is placed in optical fiber pay-off rack, putting fine tension force is 60～90g,
Using pay off rack to be released by nonmetallic reinforcement, material is aramid yarn and resin compounded forms, and reinforcement is straight
Footpath Φ 0.4～0.6mm, tensile modulus of elasticity > 52Gpa；
2. the centrage of optical fiber and the centerline of two circular non-metal reinforcement members are released same from pay off rack
In plane, and optical cable reinforcement lays respectively at the both sides of optical fiber, relative to two stiffeners of optical fiber symmetrically
Distribution；Optical fiber is simultaneously into circular non-metal reinforcement member exempts to adjust extrusion head, by exempting from tune extrusion head
Control the relative position of optical fiber and circular non-metal reinforcement member；
3. time by exempting to adjust head, the outside at optical fiber and circular non-metal reinforcement member is extruded out one layer white
Low-smoke halogen-free flame-retardant sheath material, low-smoke and flame retardant material take-up is fully dried in storage tank, it is ensured that in material not
There is steam；
The sectional dimension of the low-smoke non-halogen flame-retardant optical cable 4. extruded out is 1.2～1.6mm × 2.2～2.6mm, produces
Speed is 100m/min；
The most subsequently by first tank and second tank, carry out after then using Low Temperature Plasma Treating
Coding lettering processes, and finally carries out take-up.
A kind of FTTH the most according to claim 3 is by anti-Cicadae butterfly optical cable manufacture method, and its feature exists
In, described step 4) the 3. in step, extruding machine is divided into four fuselage districts, Ji Jing district and die orifice district, wherein
Fuselage I district is to fuselage IV district successively near Ji Jing district, and Ji Jing district is in the middle of fuselage district and die orifice district, and machine
Body I district temperature is 150 DEG C, and fuselage II district temperature is 165 DEG C, and fuselage III district temperature is 170 DEG C, fuselage
IV district temperature is 180 DEG C, and Ji Jing district temperature is 180 DEG C, and head district temperature is 185 DEG C, in the temperature in die orifice district
Degree is 190 DEG C, is stepped up to the temperature at die orifice from fuselage I district.
A kind of FTTH the most according to claim 1 is by anti-Cicadae butterfly optical cable manufacture method, and its feature exists
In, step 7) in, extruding of nylon sheath wire layer comprises the steps:
1. use fire-retardant nylon 12 material, baking material case uses the temperature baking material 1.5～2.5 of 100～110 DEG C
Hour；
2. the butterfly cable produced in a upper operation is released from pay off rack, release two tear ropes, tear simultaneously
The position of rope is in 2 V-groove of butterfly optical cable, and laying tension is 8N, then goes through nylon extrusion
In head；
3. at head, use vacuum extractor, the air between butterfly optical cable and nylon sheath wire taken out completely,
Avoid wherein producing bubble；In head, mould uses tubular molding tool；
4. the optical cable extruded is passed through one tank and two road tanks respectively, finally carry out take-up, obtain finished product
Light.
6., according to a kind of FTTH described in claim 3 or 5 by anti-Cicadae butterfly optical cable manufacture method, it is special
Levying and be, described first tank temperature is 75～90 DEG C, second tank temperature 20～30 DEG C, takeup tension
It is 12～16N.
A kind of FTTH the most according to claim 5 is by anti-Cicadae butterfly optical cable manufacture method, and its feature exists
In, described step 7) the 2. in step, nylon extruding machine is divided into four fuselage districts, Ji Jing district and die orifice district,
Wherein fuselage I district is to fuselage IV district successively near Ji Jing district, and Ji Jing district is in the middle of fuselage district and die orifice district,
And the temperature in fuselage I district is 220 DEG C, fuselage II district temperature is 225 DEG C, and fuselage III district temperature is 230 DEG C,
Fuselage IV district temperature is 230 DEG C, and Ji Jing district temperature is 235 DEG C, and head district temperature is 235 DEG C, in die orifice district
Temperature be 240 DEG C.
A kind of FTTH the most according to claim 1 is by anti-Cicadae butterfly optical cable manufacture method, and its feature exists
In, step 3) in, for 2 cores or the butterfly optical cable of 4 cores, need optical fiber is carried out optical fiber coloring.
9. a FTTH is with anti-Cicadae butterfly optical cable, it is characterised in that includes nylon sheath wire, and is coated on
Butterfly optical cable in nylon sheath wire, described butterfly optical cable includes that both sides are provided with the low-smoke non-halogen flame-retardant of V-groove and protect
Set, is placed with tear rope in described V-groove, with described V-groove at the low-smoke non-halogen flame-retardant of same parallel surface
Sheath center is provided with optical fiber, and a pair non-metal reinforcement member is symmetrically distributed in the both sides of described optical fiber, and two circles
The centrage of shape non-metal reinforcement member is with the centerline of optical fiber at grade.
A kind of FTTH the most according to claim 9 is with anti-Cicadae butterfly optical cable, it is characterised in that institute
Stating low-smoke halogen-free flame-retardant sheath is the fire retardant jacket being provided with and hanging neck, and nonmetal messenger wire is applied in and hangs in neck.
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| CN201610446542.0A CN105938229A (en) | 2016-06-20 | 2016-06-20 | Cicada-repellent butterfly-shaped optical cable for FTTH, and manufacturing method thereof |
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| CN201610446542.0A CN105938229A (en) | 2016-06-20 | 2016-06-20 | Cicada-repellent butterfly-shaped optical cable for FTTH, and manufacturing method thereof |
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|---|---|---|---|
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| CN107807427A (en) * | 2017-11-10 | 2018-03-16 | 山东太平洋光纤光缆有限公司 | A kind of all dielectric self-supporting light flexible dry type branched cable and its manufacture method |
| CN107843961A (en) * | 2017-12-14 | 2018-03-27 | 江苏亨通光电股份有限公司 | A kind of microbeam pipe butterfly leading in cable |
| CN107894638A (en) * | 2017-12-14 | 2018-04-10 | 江苏亨通光电股份有限公司 | A kind of anti-biological closed type butterfly leading in cable |
| CN109001878A (en) * | 2018-09-28 | 2018-12-14 | 江苏亨通光电股份有限公司 | A kind of flexibility all dielectric self-supporting butterfly leading in cable |
| CN109085685A (en) * | 2018-10-24 | 2018-12-25 | 江苏亨通光电股份有限公司 | All dielectric flexibility access optical cable |
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| CN111650704A (en) * | 2020-04-29 | 2020-09-11 | 成都亨通光通信有限公司 | Indoor and outdoor four-core butterfly-shaped optical cable and process flow thereof |
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| CN109001878A (en) * | 2018-09-28 | 2018-12-14 | 江苏亨通光电股份有限公司 | A kind of flexibility all dielectric self-supporting butterfly leading in cable |
| CN109085685A (en) * | 2018-10-24 | 2018-12-25 | 江苏亨通光电股份有限公司 | All dielectric flexibility access optical cable |
| CN109598319A (en) * | 2018-12-28 | 2019-04-09 | 江苏欧软信息科技有限公司 | A kind of optical fiber production management method and system |
| CN109725397A (en) * | 2019-03-07 | 2019-05-07 | 合肥兴联通讯有限公司 | A kind of novel FTTH optical cable and its production technology |
| CN110126231A (en) * | 2019-06-05 | 2019-08-16 | 西安西古光通信有限公司 | A kind of easily branched optical cable of self-bearing type indoor and outdoor and its extrusion die |
| CN110673285A (en) * | 2019-10-31 | 2020-01-10 | 杭州富通通信技术股份有限公司 | Invisible optical cable |
| CN111650704A (en) * | 2020-04-29 | 2020-09-11 | 成都亨通光通信有限公司 | Indoor and outdoor four-core butterfly-shaped optical cable and process flow thereof |
| CN113820806A (en) * | 2021-09-10 | 2021-12-21 | 南京华信藤仓光通信有限公司 | Miniature disc-shaped optical cable and manufacturing method thereof |
| CN114167560A (en) * | 2021-12-07 | 2022-03-11 | 长飞光纤光缆股份有限公司 | Butterfly-shaped optical cable |
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