CN113176643A - Air-blown anti-termite butterfly-shaped optical cable and manufacturing method thereof - Google Patents
Air-blown anti-termite butterfly-shaped optical cable and manufacturing method thereof Download PDFInfo
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- CN113176643A CN113176643A CN202110455558.9A CN202110455558A CN113176643A CN 113176643 A CN113176643 A CN 113176643A CN 202110455558 A CN202110455558 A CN 202110455558A CN 113176643 A CN113176643 A CN 113176643A
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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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—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
- G02B6/44—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
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/52—Underground or underwater installation; Installation through tubing, conduits or ducts using fluid, e.g. air
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- Optics & Photonics (AREA)
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Abstract
The invention relates to an air-blown termite-proof butterfly-shaped optical cable and a manufacturing method thereof, wherein the air-blown termite-proof butterfly-shaped optical cable comprises a sheath with a rectangular cross section, an optical fiber unit is coated in the middle of the interior of the sheath, reinforcing parts are arranged on the upper side and the lower side of the interior of the sheath corresponding to the optical fiber unit, and grooves which shrink from outside to inside are arranged in the middle of the left side surface and the right side surface of the exterior of the sheath corresponding to the optical fiber unit. The optical cable is reasonable in structure arrangement, good in bending performance and tensile property and good in air-blowing laying performance, the air-blowing distance can reach more than 1500m, and the distance and work efficiency of laying indoor pipelines are greatly improved; and the termite-proof effect is excellent, the pollution is little, and the durability is strong.
Description
Technical Field
The invention relates to an air-blown termite-proof butterfly-shaped optical cable and a manufacturing method thereof, belonging to the technical field of optical communication transmission.
Background
The butterfly-shaped optical cable is mainly used for indoor wiring, the indoor wiring environment is complex, particularly in a built indoor place, if a network needs to be newly added or rebuilt, the whole project is very complicated, the manual laying amount is large, and meanwhile, the bending performance and the stretch-resistant performance of the butterfly-shaped rubber-insulated optical cable are high in requirements. On the other hand, with the increasing requirements of building decoration and the expansion of the internal space of buildings, the occasions of laying optical cables in the wall and the ground by pipelines, especially the optical cables laid by the pipelines in a longer distance are increasing, but most of the existing indoor butterfly-shaped optical cables are suitable for manual wiring, the performance of air-blowing laying is poor, the air-blowing laying of the pipelines is difficult, and especially the air-blowing laying of the pipelines in a longer distance is difficult to adapt. And on the other hand, the butterfly-shaped optical cable is arranged indoors, particularly in places such as old residential buildings and the like, and is extremely easy to be damaged by termites, and due to the complex environment and the difficulty in finding breakpoints, the network breaking time is long, and the user experience is poor. At present, the optical cable basically adopts a physical mode to prevent the ants, and a nylon sheath is generally added on the outer surface of the optical cable, so that the bite of the termites is reduced, the termite prevention effect is limited, the manufacturing cost is high, and the price is high. Chemical termite prevention usually sprays termite prevention medicament in the sheath raw material, which has good termite prevention effect, but the medicament is easy to volatilize, has short use time, and is easy to pollute the environment during manufacture and use.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air-blowing laying termite-proof butterfly-shaped optical cable and a manufacturing method thereof, aiming at the defects in the prior art, the optical cable is reasonable in structure arrangement, has good air-blowing laying performance, improves bending performance and tensile property, and is excellent in termite-proof effect, small in pollution and strong in durability.
The technical scheme adopted by the invention for solving the problems is as follows: including the sheath of rectangle cross-section, the middle part cladding has the optic fibre unit in the sheath, and both sides correspond the optic fibre unit and installed the reinforcement about in the sheath, correspond the recess that the optic fibre unit set up the outside-in shrink in side middle part outside the sheath, its characterized in that the sheath adopts the double-deck sheath structure of inner sheath and oversheath, wherein the inner sheath be flexible inner sheath, the oversheath be low coefficient of friction oversheath to surface at the outer sheath sets up the recess line, the oversheath in the mixture lay the termite-proof microballon.
According to the scheme, the outer sheath is a polyvinyl chloride or low-smoke halogen-free flame-retardant polyolefin outer sheath with a low friction coefficient, and the dynamic friction coefficient range is 0.05-0.30; the inner sheath shape is the rectangle, contains optic fibre unit and reinforcement in the inner sheath, the inner sheath adopts flexible polyvinyl chloride or low smoke and zero halogen fire-retardant polyolefin to make.
According to the scheme, the radial section of the groove grains is arc-shaped, sine-wave-shaped or triangular, and the groove grains are straight or spiral along the axial direction.
According to the scheme, the groove width of the groove grains is 0.2-0.8 mm, and the groove depth is 0.1-0.5 mm.
According to the scheme, the four corners of the outer sheath are nested with rolling balls, and the balls are distributed at intervals along the axial direction.
According to the scheme, the balls are spherical, the diameter of each ball is 0.3-1.0 mm, and the distance between every two adjacent balls is 2-20 mm.
According to the scheme, the ant-preventing micro-beads are miniature ant-preventing capsules, the particle size is 0.1-0.6 mm, and the capsule is internally coated with an ant-preventing agent.
According to the scheme, the ant preventing agent is ant preventing solution or/and ant preventing powder, wherein the ant preventing solution forms a solution capsule, and the ant preventing powder forms a powder capsule; the ant-proof agent is one or more.
According to the scheme, the capsule is made of polymer, glass or materials similar to the protective sleeve, the volume ratio of the ant-proof agent to the whole ant-proof micro-beads is more than 50%, and the ant-proof micro-beads are spherical or polyhedral.
According to the scheme, the distribution density of the ant-proof micro-beads in the outer sheath is 20-50% according to the volume ratio.
According to the scheme, the optical fiber unit is a 1-4 core optical fiber, and the optical fiber is a G652 type, a G655 type, a G656 type or a G657 type optical fiber.
According to the scheme, the reinforcing piece is aramid yarn, steel wire, GFRP or KFRP; the diameter of the reinforcing piece is 0.3-0.8 mm.
The technical scheme of the manufacturing method of the invention is as follows:
placing 1-4 colored optical fibers on an optical fiber pay-off rack, entering a machine head of an extruding machine through a guide wheel and a line concentration die, simultaneously placing 2 reinforcing pieces on a reinforcing piece pay-off rack, and entering the machine head of the extruding machine through the guide wheel and the line concentration die;
place the hopper with the inner sheath material, get into the extruding machine through the feed opening, the inner sheath mould is installed to the extruding machine aircraft nose, and the inner sheath extruding machine sets gradually from feed inlet to each district of die orifice: the forming device comprises a feeding port, a first machine barrel area, a second machine barrel area, a third machine barrel area, a fourth machine barrel area, a fifth machine barrel area, a machine neck and a die opening, wherein a forming clamp is arranged at the die opening, the temperature of each area is set, a cooling area at the outlet of the clamp adopts sectional cooling, a first section of cooling connected with the die opening adopts a warm water cooling tank with the cooling temperature of 50 +/-10 ℃, and the rest sections are cooled by normal-temperature water;
placing the semi-finished product of the inner sheath on a sheath pay-off rack, entering a head of an outer sheath plastic extruding machine through a guide wheel, and paying off at a tension of 10N; uniformly mixing the outer sheath material and the ant-proof microspheres in a certain proportion, placing the uniformly distributed outer sheath material in a hopper of a plastic extruding machine, and feeding the material into the plastic extruding machine through the hopper;
an outer sheath die is installed on the head of the extruding machine, and the outer sheath extruding machine is sequentially arranged from the feeding hole to each area of the die opening: the device comprises a feeding port, a first machine barrel area, a second machine barrel area, a third machine barrel area, a fourth machine barrel area, a fifth machine barrel area, a machine neck and a die opening, wherein a forming clamp is arranged at the die opening, corresponding grains can be formed on the surface of the rubber-insulated-wire optical cable by arranging different clamps and controlling the rotation of the clamps, and the temperature of each area is set; the cooling area at the outlet of the clamp adopts sectional cooling, the first section of cooling connected with the die orifice adopts a warm water cooling tank with the cooling temperature of 50 +/-10 ℃, and the rest sections are cooled by normal temperature water.
According to the scheme, the ball implanting (placing) device is arranged at the machine head, and balls are discontinuously arranged to four corners of the outer sheath of the butterfly-shaped optical cable.
The invention has the beneficial effects that: 1. the groove lines are arranged on the surface of the butterfly-shaped optical cable, so that air-blowing laying resistance can be reduced, the four corners of the butterfly-shaped optical cable are provided with the slidable balls, the air-blowing laying resistance of the optical cable can be further reduced, the air-blowing distance can reach more than 1500m, and the indoor pipeline laying distance and the working efficiency are greatly improved; 2. the structure is reasonably arranged, a double-layer sheath structure with soft inside and rigid outside is adopted, the bending performance is good, indoor laying and air-blowing laying in a bent pipe are facilitated, the tensile performance is good when the outer sheath is hard, and air-blowing laying and slit penetration are facilitated; 3. the invention has small overall structure external diameter, light weight and simple installation; can adopt the air-blowing mode to lay, improve the flexibility of network deployment, can be blown out when the optical cable is maintained, be convenient for change and maintenance. 4. The termite-proof micro-beads in the sheath have good termite-proof effect, once the termite is corroded, the termite-proof agent in the termite-proof micro-beads seeps out, the termite can be effectively killed, and the termite-proof effect is obvious; and the pollution is little when the structure of the ant-proof micro-bead is adopted for use and manufacture; the agent of the termite-proof micro-bead cannot volatilize at ordinary times, once the termite is corroded, the termite-proof agent in the local termite-proof micro-bead seeps out, and the termite-proof micro-bead at other parts is not influenced, so the termite-proof micro-bead has long using time, wherein the permeability of the termite-proof solution is strong, the termite-proof face is large, the termite-proof powder is not easy to volatilize, the using time is long, and the termite-proof solution and the termite-proof powder can achieve better epidemic prevention effect and long service life by mixing and using the termite-proof micro-bead and the termite-proof powder, so the optical cable has strong durability and long service life; 5. the ant-preventing agent in the ant-preventing micro-beads can be placed into different types according to the types of ant damage in different areas, so that the ant-preventing agent can exert better ant-killing effect.
Drawings
Fig. 1 is a radial cross-sectional structural view of one embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
One embodiment of the invention is shown in fig. 1, and comprises a sheath with a rectangular cross section, wherein a groove which is contracted from outside to inside is arranged in the middle of the left side surface and the right side surface of the sheath corresponding to an optical fiber unit, the sheath adopts a double-layer sheath structure of an inner sheath 3 and an outer sheath 4, the inner sheath is rectangular, the inner sheath comprises an optical fiber unit 2 and a reinforcing member 1, the inner sheath is a flexible inner sheath made of flexible low-smoke halogen-free flame-retardant polyolefin, the middle part in the inner sheath is coated with the optical fiber unit, and the optical fiber is a 1-core optical fiber which is a G657 type optical fiber. And reinforcing pieces are symmetrically arranged at the upper side and the lower side of the sheath corresponding to the optical fiber units, and the reinforcing pieces are aramid yarn bundles with the diameter of 0.45 mm. An outer sheath is coated outside the inner sheath, the outer sheath is a hard low-friction-coefficient outer sheath and is a low-smoke halogen-free flame-retardant polyolefin outer sheath with a low friction coefficient, the dynamic friction coefficient range of the outer sheath is 0.15, ant-proof microspheres 7 are mixed and distributed in the outer sheath, the ant-proof microspheres are micro ant-proof capsules, the particle size is 0.2-0.4 mm, an ant-proof agent is coated in the capsules, the ant-proof agent is an ant-proof solution and an ant-proof powder, namely the ant-proof agent capsules and the powder capsules are mixed according to the weight ratio of 6:4, and the ant-proof agent is one or two, namely a pyrethroid medicament; the capsule is composed of polymer, the volume ratio of the ant-proof agent to the whole ant-proof micro-bead is 70%, the ant-proof micro-bead is spherical, and the distribution density of the ant-proof micro-bead in the outer sheath is 25% by volume ratio; the outer surface of the outer sheath is provided with groove grains 5, the radial cross section of each groove grain is arc-shaped, the groove grains are straight along the axial direction, the groove width of each groove grain is 0.4mm, and the groove depth is 0.2 mm. The four corners of the outer sheath are embedded with rolling balls 6 which are distributed at intervals along the axial direction, the balls are spherical and can be made of glass or stainless steel, the diameter is 0.7mm, and the distance between every two adjacent balls is 12 mm.
The manufacturing process of this example was carried out as follows:
1G 657 optical fiber with the diameter of 250 μm is placed on an optical fiber pay-off rack, and the pay-off tension is 0.8N; two aramid yarn bundles with the diameter of 0.45mm are placed on a reinforcing piece pay-off rack, and the pay-off tension is 10N. The optical fiber and the reinforcing piece enter the head of the plastic extruding machine through a guide wheel and a line concentration die;
place the hopper with the inner sheath material, get into the extruding machine through the feed opening, the inner sheath mould is installed to the extruding machine aircraft nose, and the inner sheath extruding machine sets gradually from feed inlet to each district of die orifice: the temperature of the feeding port, the first barrel area, the second barrel area, the third barrel area, the fourth barrel area, the fifth barrel area, the neck and the die orifice of each area are set to be 120 +/-5 ℃, 135 +/-10 ℃ in the first barrel area, 135 +/-10 ℃ in the second barrel area, 140 +/-10 ℃ in the third barrel area, 150 +/-10 ℃ in the fourth barrel area, 160 +/-10 ℃ in the fifth barrel area and 165 +/-10 ℃ in the neck and the die orifice. The cooling area at the outlet of the clamp adopts sectional cooling, the first section of cooling connected with the die orifice adopts a warm water cooling tank with the cooling temperature of 50 +/-10 ℃, the rest sections are cooled by normal temperature water, and the semi-finished product is wound onto a disc through a winding frame;
placing the semi-finished product coated with the inner sheath on an outer sheath pay-off rack, feeding the semi-finished product into a head of a plastic extruding machine through a guide wheel, wherein the pay-off tension is 10N, mounting an outer sheath mold on the head of the plastic extruding machine, uniformly mixing an outer sheath material and ant-proof microspheres in a volume ratio of 25%, placing the uniformly distributed outer sheath material into a hopper of the plastic extruding machine, and feeding the material into the plastic extruding machine through the hopper; forming a butterfly-shaped optical cable with parallel arc-shaped groove grains by a forming clamp at the machine head; and the butterfly-shaped optical cable is cooled by the two stages of water tanks and then is taken up and put on the tray.
The plastic extruding machine is sequentially arranged from the feeding hole to the die orifice in each area as follows: feed inlet, barrel first district, barrel second district, barrel three district, barrel four districts, barrel five districts, machine neck and die orifice to it is respectively to set up each district temperature: the feed inlet is 120 +/-5 ℃, the first barrel zone is 135 +/-10 ℃, the second barrel zone is 135 +/-10 ℃, the third barrel zone is 140 +/-10 ℃, the fourth barrel zone is 150 +/-10 ℃, the fifth barrel zone is 160 +/-10 ℃, and the neck and the die are 165 +/-10 ℃; set up ball placer in aircraft nose exit, be interrupted and place microballon to four angles of butterfly-shaped optical cable. The cooling area arranged at the outlet of the forming fixture adopts sectional cooling, the first section of cooling connected with the die orifice adopts a warm water cooling tank with the cooling temperature of 50 +/-10 ℃, and the rest sections are cooled by normal temperature water.
Claims (15)
1. The utility model provides an air-blowing laid prevents ant butterfly-shaped optical cable, has the optic fibre unit including the sheath of rectangle cross-section, and the middle part cladding has the optic fibre unit in the sheath, and both sides correspond the optic fibre unit and installed the reinforcement about in the sheath, and the side middle part corresponds the recess that the optic fibre unit set up the shrink from outside to inside about the sheath, its characterized in that the sheath adopts inner sheath and the double-deck sheath structure of oversheath, wherein the inner sheath be flexible inner sheath, the oversheath be low friction coefficient oversheath to the surface at the oversheath sets up the recess line, the oversheath in mix and to have laid the protection pearl.
2. An air-blown ant-protected butterfly cable as claimed in claim 1, wherein said outer jacket is a low coefficient of friction polyvinyl chloride or low smoke zero halogen flame retardant polyolefin outer jacket having a coefficient of dynamic friction in the range of 0.05 to 0.30.
3. The air-blown termite resistant butterfly optical cable according to claim 1 or 2, wherein the inner sheath is rectangular, the inner sheath contains an optical fiber unit and a reinforcement, and the inner sheath is made of flexible polyvinyl chloride or low-smoke halogen-free flame-retardant polyolefin.
4. The air-blown termite resistant butterfly optical cable as set forth in claim 1 or 2, wherein the groove pattern has a radial cross-sectional shape of circular arc, sine wave or triangle, and the groove pattern is flat or spiral in the axial direction.
5. The air-blown termite resistant butterfly optical cable as set forth in claim 4, wherein the groove width of the groove pattern is 0.2 to 0.8mm, and the groove depth is 0.1 to 0.5 mm.
6. An air-blown termite resistant butterfly cable as claimed in claim 1 or 2 wherein said outer jacket has rollable balls nested at four corners of said outer jacket, said balls being axially spaced apart.
7. The air-blown termite resistant butterfly optical cable as set forth in claim 6, wherein said balls are spherical and have a diameter of 0.3 to 1.0mm, and a distance between adjacent balls is 2 to 20 mm.
8. The air-blown termite-proof butterfly-shaped optical cable according to claim 1 or 2, wherein the termite-proof micro-beads are micro termite-proof capsules with the particle size of 0.1-0.6 mm, and the capsules are internally coated with termite-proof agents.
9. An air blown termite resistant butterfly cable as set forth in claim 8 wherein said termite resistant agent is a termite resistant solution and/or a termite resistant powder, wherein the termite resistant solution is in the form of a solution capsule and the termite resistant powder is in the form of a powder capsule; the ant-proof agent is one or more.
10. An air-blown ant deterrent butterfly optical cable as claimed in claim 9 wherein said capsule is comprised of a polymer, glass or material similar to the jacket, the volume ratio of the ant deterrent agent to the total ant deterrent beads is greater than 50%, and said ant deterrent beads are spherical or polyhedral.
11. The air-blown termite resistant butterfly optical cable according to claim 1 or 2, wherein the distribution density of the termite resistant micro beads in the outer sheath is 20 to 50% by volume.
12. The air-blown termite resistant butterfly optical cable according to claim 1 or 2, wherein the optical fiber unit is a 1-4 core optical fiber, and the optical fiber is a G652 type, a G655 type, a G656 type or a G657 type optical fiber.
13. An air-blown termite resistant butterfly cable as claimed in claim 1 or 2 wherein said strength members are aramid yarns, steel wires, GFRP or KFRP; the diameter of the reinforcing piece is 0.3-0.8 mm.
14. A manufacturing method of an air-blown laying termite-proof butterfly-shaped optical cable is characterized in that 1-4 colored optical fibers are placed on an optical fiber pay-off rack and enter a machine head of an extruding machine through a guide wheel and a line concentration die, and 2 reinforcing pieces are placed on a reinforcing piece pay-off rack and enter the machine head of the extruding machine through the guide wheel and the line concentration die;
place the hopper with the inner sheath material, get into the extruding machine through the feed opening, the inner sheath mould is installed to the extruding machine aircraft nose, and the inner sheath extruding machine sets gradually from feed inlet to each district of die orifice: the forming device comprises a feeding port, a first machine barrel area, a second machine barrel area, a third machine barrel area, a fourth machine barrel area, a fifth machine barrel area, a machine neck and a die opening, wherein a forming clamp is arranged at the die opening, the temperature of each area is set, a cooling area at the outlet of the clamp adopts sectional cooling, a first section of cooling connected with the die opening adopts a warm water cooling tank with the cooling temperature of 50 +/-10 ℃, and the rest sections are cooled by normal-temperature water;
placing the semi-finished product of the inner sheath on a sheath pay-off rack, entering a head of an outer sheath plastic extruding machine through a guide wheel, and paying off at a tension of 10N; uniformly mixing the outer sheath material and the ant-proof microspheres in a certain proportion, placing the uniformly distributed outer sheath material in a hopper of a plastic extruding machine, and feeding the material into the plastic extruding machine through the hopper;
an outer sheath die is installed on the head of the extruding machine, and the outer sheath extruding machine is sequentially arranged from the feeding hole to each area of the die opening: the device comprises a feeding port, a first machine barrel area, a second machine barrel area, a third machine barrel area, a fourth machine barrel area, a fifth machine barrel area, a machine neck and a die opening, wherein a forming clamp is arranged at the die opening, corresponding grains can be formed on the surface of the rubber-insulated-wire optical cable by arranging different clamps and controlling the rotation of the clamps, and the temperature of each area is set; the cooling area at the outlet of the clamp adopts sectional cooling, the first section of cooling connected with the die orifice adopts a warm water cooling tank with the cooling temperature of 50 +/-10 ℃, and the rest sections are cooled by normal temperature water.
15. A method of manufacturing an air-blown ant deterrent butterfly cable as claimed in claim 14 wherein ball implanting means are provided at the head and balls are intermittently attached to the four corners of the outer sheath of the butterfly cable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110455558.9A CN113176643A (en) | 2021-04-26 | 2021-04-26 | Air-blown anti-termite butterfly-shaped optical cable and manufacturing method thereof |
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| CN202110455558.9A CN113176643A (en) | 2021-04-26 | 2021-04-26 | Air-blown anti-termite butterfly-shaped optical cable and manufacturing method thereof |
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| CN110515170A (en) * | 2019-08-05 | 2019-11-29 | 中国通信建设第一工程局有限公司 | A kind of communication pipe optical cable automatic laying device |
| CN110749964A (en) * | 2019-10-23 | 2020-02-04 | 杭州富通通信技术股份有限公司 | Optical cable |
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Application publication date: 20210727 |