CN103714909B - A kind of nylon photoelectric butterfly cable and preparation method thereof - Google Patents
A kind of nylon photoelectric butterfly cable and preparation method thereof Download PDFInfo
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- CN103714909B CN103714909B CN201310739455.0A CN201310739455A CN103714909B CN 103714909 B CN103714909 B CN 103714909B CN 201310739455 A CN201310739455 A CN 201310739455A CN 103714909 B CN103714909 B CN 103714909B
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Abstract
A kind of nylon photoelectric butterfly cable of the present invention and preparation method thereof, this cable comprises optical fiber, optical fiber both sides respectively Parallel Symmetric arrange a copper stranded conductor, outside optical fiber and copper stranded conductor, integral type inner restrictive coating is set, the outer coated external sheath layer again of inner restrictive coating, described fiber outer layer is provided with shaping sleeve pipe, and this molding sleeve pipe box is outer and have certain interval with fibre external diameters at optical fiber.Method is that nylon layer in fiber core outer cladding is formed fiber unit, by at least one wrapped stranded aramid layers of fiber unit, extrude the high temperature resistant sheath of PVC afterwards, the optical fiber made is inserted in flange-connection stainless steel metal flexible pipe, adopt crowded tubular structure molding mode to be inserted in shaping sleeve pipe again, form in molded cannula and on inner hole wall, directly put 6 water blocking yarns in advance; Finally adopt Double-head extrusion process, extrude high temperature resistant PVC inner restrictive coating and nylon outer sheath layer successively.Bending radius of the present invention is being less than 7.5mm, improves production efficiency, and heat-resistant deforming, fire-retardant and block-water performance get a promotion.
Description
Technical field
The present invention relates to cable and optical cable fusion field, specifically a kind of nylon photoelectric butterfly cable and preparation method thereof.
Background technology
The integration of three networks be not simple telecommunications network, computer network and cable television network three macroreticular physics unification, be the fusion that high-level business is applied its basic order.If consider the type of service can met at present: linking Internet, mediaphone, IPTV etc. need the support with high-end broadband network.In the integration of three networks major tasks that Executive Meeting of the State Council is determined, clearly propose " advance cities and towns fiber to the home, expand rural area broadband network coverage, actively push forward network overall planning and Joint construction and sharing ".Along with Chinese broadband implementation.FTTH will promote the rapid growth of Chinese broadband user's number.FTTH user to 2013 is year more than 1,000 ten thousand, 10-14 annual compound growth rates 60%.
Although fiber to the home obtains popularization energetically, the optical fiber rate of user side access electrical network is almost nil, and China's intelligent grid is at the early-stage in the fiberize of incoming end.Therefore, for newly-built building, when laying drop cable, if can lay the cable of applicable high-speed communication simultaneously, the later stage of reducing user and operator widely drops into by that.
For this reason, domestic had relevant research to corresponding cable, as a key name is called Chinese patent, the notification number CN201868144U of " a kind of composite flexible fireproof power cable with optical fibers ", it discloses several conductor, inorganic insulation layer, several conductor is arranged in parallel, all be enclosed with inorganic insulation layer outside every root conductor, the gap-fill between the inorganic insulation layer of several conductor has an Optical Fiber Transmission unit; Outside is enclosed with belting layer, inner restrictive coating, external sheath layer successively, gap between the inorganic insulation layer of belting layer and several conductor is provided with filler, belting layer is that Mica tape forms, and inner restrictive coating material adopts seamless wrinkle copper, and filler material is inorfil., avoid secondary wiring, reduce operating expenses, networking expense is low for this patent light harvesting fibre and electrical power distribution cable; Huge bandwidth access is provided.But, due to factors such as its external diameter are thick, stripping is inconvenient, construction is inconvenient, thus fail large-scale promotion use.For another example a key name is called the Chinese patent of " a kind of power optical fiber is to family cable ", notification number CN102314968A, it discloses the first insulated conductor, the second insulated conductor, butterfly optical cable, envelope the first insulated conductor the first outer jacket, envelope the second insulated conductor the second outer jacket, envelope butterfly optical cable the 3rd outer jacket and be positioned within the 3rd outer jacket and the cavity of described butterfly optical cable can be held; First insulated conductor, the second insulated conductor lay respectively at the both sides of butterfly optical cable; First outer jacket, the second outer jacket, the 3rd outer jacket are one-body molded; Arbitrary with in the plane of the first conductor axis perpendicular, the outer rim of the 3rd outer jacket is protruded to cavity.Although this invention have employed the contour structures of butterfly optical cable, reach easily spread split, easily lay, the easy beneficial effect such as construction.But find through long-term research, because butterfly optical cable often occurs that the bending direction of oversheath and cable core is inconsistent, and optical fiber directly contacts with sheath, remaining length can not be produced, cause butterfly optical cable when constructing wiring, even if bend within the scope of the bending radius of butterfly optical cable, also usually occur that butterfly optical cable unit damages, the phenomenon of fibercuts, cause much inconvenience and loss to construction.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of nylon photoelectric butterfly cable and preparation method thereof, this nylon photoelectric butterfly cable stripping and easy construction, and during construction wiring, optical fiber can not forced breakage.
A kind of nylon photoelectric butterfly cable of the present invention, comprise optical fiber, optical fiber both sides respectively Parallel Symmetric arrange a copper stranded conductor, outside optical fiber and copper stranded conductor, integral type inner restrictive coating is set, the outer coated external sheath layer again of inner restrictive coating, described fiber outer layer is provided with shaping sleeve pipe, and this molding sleeve pipe box is outer and have certain interval with fibre external diameters at optical fiber.
The shaping sleeve pipe of this kind of endoporus molding structure makes optical fiber directly not contact with protective cover material, and optical fiber can have appropriate sliding axially in shaping sleeve pipe, and shaping sleeve pipe not only efficiently solves optical fiber pressurized and causes impaired problem; Simultaneously avoid that extrusion modling causes more than the zero long even negative remaining long and bad phenomenon that cannot adjust.
As improvement, between optical fiber and shaping sleeve pipe, be also provided with flange-connection stainless steel metal flexible pipe, optical fiber is enclosed within flange-connection stainless steel metal flexible pipe.By adopting flange-connection stainless steel metal flexible pipe, not only reducing the impact of lateral pressure on optical fiber, also improving the bending property of optical fiber, the bending radius of butterfly optical cable 7.5mm can be realized.
Further, described optical fiber structure is: form fiber unit at the outer hard-pressed bale nylon layer of fiber core, several this fiber units are arranged in parallel, outside wrapped aramid layers, and aramid layers extrudes the high temperature resistant sheath of PVC outward again.
Further, shaping sleeve pipe adopts crowded tubular structure shaping, and molding sleeve pipe orifice wall directly puts 6 water blocking yarns, improves the block-water performance of product, avoids nylon material water suction and too much causes deformation of products.
Inner restrictive coating adopts high temperature resistant PVC sheath, and external sheath layer adopts nano-nylon material.Conventional butterfly optical cable is in order to possess the characteristic of environmental protection flame retardant, general employing low smoke and zero halogen protective cover material, but this kind of material wear-resistant performance is not good, in order to effectively solve the flimsy phenomenon of butterfly optical cable surface sheath, present invention employs the duplex sheath structure that nano-nylon material is coated on high temperature resistant PVC protective cover material surface.Meanwhile, according to the characteristic of product requirement, have employed nano-nylon material, comparatively this product of common nylon has following characteristics: 1, heat-resistant deforming temperature rises to 150 DEG C from 65 DEG C, increases by 90% on year-on-year basis; 2, thermal coefficient of expansion declines 45%; 3, fire resistance promotes, and HRR declines 63%, and harmful black smoke disappears; 4, barrier properties for gases improves 50%-4 times.
In addition, present invention also offers the manufacture method of this nylon photoelectric butterfly cable, it is characterized in that comprising the following steps:
1) install on fiber placing shaft by 1 fiber core, fiber core put fine tension adjustment to 0.6 ~ 0.7N, takeup tension adjusts to 5 ~ 7N;
2) make above-mentioned fiber core successively through device for filling oil, vacuum extractor import in hard-pressed bale mould, the pressure of device for filling oil is 0.02MPa, and import mould is: Φ 0.75mm, and outlet mold is: Φ 0.6mm; The pressure of vacuum extractor is 0.4MPa;
Afterwards by the extrusion molding mould of the fiber core after oil-filled by plastic extruding machine, at fiber core outer cladding last layer nylon layer, it is 215 ~ 265 DEG C that nylon layer extrudes temperature; Again through hot water storgae, cold rinse bank cooling twice, hot water storgae temperature is at 50 ~ 60 DEG C, and cold rinse bank temperature, at 20 ~ 25 DEG C, namely makes the fiber unit of hard-pressed bale, and it is of a size of Φ 0.58-0.62mm, and speed of production is 250m/min;
3) at least one fiber unit is placed in pay off rack, laying tension is 2 ~ 2.5N, adopts wrapped stranded aramid layers: wrapped stranded with the aramid yarn of 8 1580dtex, and aramid fiber laying tension is 1N; Adopt the high temperature resistant sheath of PVC to adopt PVC sheath material to squeeze tubular type afterwards and extrude the high temperature resistant sheath of PVC, PVC sheath material temperature is 145 ~ 185 DEG C, and sheath wall thickness is 0.45-0.55mm;
4) optical fiber that step 3) is made is inserted in flange-connection stainless steel metal flexible pipe, then adopts crowded tubular structure molding mode to be inserted in shaping sleeve pipe, form in molded cannula and on inner hole wall, directly put 6 water blocking yarns in advance;
5) by step 4) optical fiber made and two copper stranded conductors are placed on pay off rack, adopt Double-head extrusion process, extrude high temperature resistant PVC inner restrictive coating and nylon outer sheath layer successively, wherein the thickness of high temperature resistant PVC inner restrictive coating is 0.7-0.75mm, and extruding temperature is 145 ~ 185 DEG C; The thickness of nylon outer sheath layer is 0.4-0.45mm, and extruding temperature is 215 ~ 265 DEG C; After through hot water storgae, cold rinse bank cooling twice, hot water storgae temperature at 50 ~ 60 DEG C, cold rinse bank temperature at 20 ~ 25 DEG C, one-shot forming.
Hinge structure of the present invention has following beneficial effect:
1, this butterfly optical cable is when constructing wiring, and bending radius still can not fracture when being less than 7.5mm.
2, adopt high temperature resistant PVC protective cover material, guarantee copper stranded conductor and shaping sleeve pipe, jacket thickness between copper stranded conductor and nylon outer sheath is 0.7-0.75mm.Adopt this kind of material and wall thickness can replace the structure (layer insulating is coated on 8 copper stranded conductors, and second layer insulating barrier is outer jacket) of original dielectric layers, decrease one insulation operation, substantially increase production efficiency.
3, inner restrictive coating adopts high temperature resistant PVC sheath, and external sheath layer adopts nano-nylon material, heat-resistant deforming ability and fire resistance is promoted and greatly promotes; Barrier properties for gases also obtains raising.
4, improve the block-water performance of product, avoid nylon material water suction and too much cause deformation of products.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's (single core);
Fig. 2 is the structural representation of the present invention's (two cores);
Fig. 3 is the structural representation of the present invention's (four-core).
Embodiment
As shown in Figure 1, a kind of nylon photoelectric butterfly cable of the present invention, comprise optical fiber, optical fiber both sides respectively Parallel Symmetric arrange a copper stranded conductor 8, arrange integral type inner restrictive coating 9 outside optical fiber and copper stranded conductor 8, inner restrictive coating coated external sheath layer 10 more outward, in described optical fiber is enclosed within, the outer cover again of flange-connection stainless steel metal flexible pipe 5 has shaping sleeve pipe 6, and shaping sleeve pipe 6 adopts crowded tubular structure shaping, and shaping sleeve pipe 6 inner hole wall directly puts 6 water blocking yarns 7.Inner restrictive coating 9 adopts high temperature resistant PVC sheath, and external sheath layer 10 adopts 10 nano-nylon materials.
Wherein optical fiber structure is: form fiber unit at the outer hard-pressed bale nylon layer 2 of fiber core 1, one, two or four this fiber units arranged in parallel, outside wrapped aramid layers 3, aramid layers 3 is outer extrudes the high temperature resistant sheath 4 of PVC again.See Fig. 1 to Fig. 3.
The manufacture method of described nylon photoelectric butterfly cable, it comprises the following steps:
1) install on fiber placing shaft by 1 fiber core 1, fiber core 1 put fine tension adjustment to 0.6 ~ 0.7N, takeup tension adjusts to 5 ~ 7N;
2) make above-mentioned fiber core successively through device for filling oil, vacuum extractor import in hard-pressed bale mould, the pressure of device for filling oil is 0.02MPa, and import mould is: Φ 0.75mm, and outlet mold is: Φ 0.6mm; The pressure of vacuum extractor is 0.4MPa;
Afterwards by the extrusion molding mould of the fiber core after oil-filled by plastic extruding machine, at fiber core 1 outer cladding last layer nylon layer 2, it is 215 ~ 265 DEG C that nylon layer 2 extrudes temperature; Again through hot water storgae, cold rinse bank cooling twice, hot water storgae temperature is at 50 ~ 60 DEG C, and cold rinse bank temperature, at 20 ~ 25 DEG C, namely makes the fiber unit of hard-pressed bale, and it is of a size of Φ 0.58-0.62mm, and speed of production is 250m/min; Little being convenient to of hard-pressed bale external diameter external diameter reduces structure.
3) according to demand one, two or four fiber units are placed in pay off rack, laying tension is 2 ~ 2.5N, adopt wrapped stranded aramid layers 3: wrapped stranded with the aramid yarn of 8 1580dtex, aramid fiber laying tension is 1N, makes the long-term tensile force of product to reach more than 300N; Adopt the high temperature resistant sheath of PVC to adopt PVC sheath material to squeeze tubular type afterwards and extrude the high temperature resistant sheath 4 of PVC, PVC sheath material temperature is 145 ~ 185 DEG C, and sheath wall thickness is 0.45-0.55mm;
4) optical fiber that step 3 is made is inserted in flange-connection stainless steel metal flexible pipe 5, then adopts crowded tubular structure molding mode to be inserted in shaping sleeve pipe 6, form in molded cannula 6 and on inner hole wall, directly put 6 water blocking yarns 7 in advance; Adopt flange-connection stainless steel metal flexible pipe, discharge the bending property of G.657A2 optical fiber, bending radius can realize being less than 7.5mm.
Flange-connection stainless steel metal flexible pipe 5 is adopted to be placed on PVC sheath 4 surface in this step, this kind of cable adopts G.657A2 optical fiber, this type optical fiber is to bend-insensitive, macrobending loss 0.2dB1550nm under 7.5mm bending radius reaches, do not affect Optical Fiber Transmission performance, be particularly suitable for needing corner bending to register one's residence use.But because the bending direction of oversheath and cable core is inconsistent, and the impact of lateral pressure, the butterfly optical cable bending radius of the use causing general standard to require G.657A2 optical fiber is 15mm.By adopting flange-connection stainless steel metal flexible pipe to not only reduce the impact of lateral pressure on optical fiber, also improving bending property, the bending radius of butterfly optical cable 7.5mm can be realized.
5) by step 4) optical fiber made and two copper stranded conductors 8 are placed on pay off rack, adopt Double-head extrusion process, extrude high temperature resistant PVC inner restrictive coating 9 and nylon outer sheath layer 10 successively, wherein the thickness of high temperature resistant PVC inner restrictive coating 9 is 0.7-0.75mm, and extruding temperature is 145 ~ 185 DEG C; The thickness of nylon outer sheath layer 10 is 0.4-0.45mm, and extruding temperature is 215 ~ 265 DEG C; After through hot water storgae, cold rinse bank cooling twice, hot water storgae temperature at 50 ~ 60 DEG C, cold rinse bank temperature at 20 ~ 25 DEG C, one-shot forming.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (1)
1. a manufacture method for nylon photoelectric butterfly cable, is characterized in that comprising the following steps:
1) 1 fiber core (1) is installed on fiber placing shaft, fiber core (1) put fine tension adjustment to 0.6 ~ 0.7N, receive fine tension adjustment to 5 ~ 7N;
2) make above-mentioned fiber core (1) successively through device for filling oil, vacuum extractor import in hard-pressed bale mould, the pressure of device for filling oil is 0.02MPa, and import mould is: Φ 0.75mm, and outlet mold is: Φ 0.6mm; The pressure of vacuum extractor is 0.4MPa;
Afterwards by the extrusion molding mould of the fiber core (1) after oil-filled by plastic extruding machine, at fiber core (1) outer cladding last layer nylon layer (2), it is 215 ~ 265 DEG C that nylon layer (2) extrudes temperature; Again through hot water storgae, cold rinse bank cooling twice, hot water storgae temperature is at 50 ~ 60 DEG C, and cold rinse bank temperature, at 20 ~ 25 DEG C, namely makes the fiber unit of hard-pressed bale, and it is of a size of Φ 0.58-0.62mm, and speed of production is 250m/min;
3) at least one fiber unit is placed in pay off rack, laying tension is 2 ~ 2.5N, and adopt wrapped stranded aramid layers (3): wrapped stranded with the aramid yarn of 8 1580dtex, aramid fiber laying tension is 1N; Adopt PVC sheath material to squeeze tubular type afterwards and extrude the high temperature resistant sheath of PVC (4), PVC sheath material temperature is 145 ~ 185 DEG C, and sheath wall thickness is 0.45-0.55mm;
4) optical fiber that step 3) is made is inserted in flange-connection stainless steel metal flexible pipe (5), then adopts crowded tubular structure molding mode to be inserted in shaping sleeve pipe (6), form in molded cannula (6) on inner hole wall, directly put 6 water blocking yarns (7) in advance;
5) by step 4) optical fiber made and two copper stranded conductors (8) are placed on pay off rack, adopt Double-head extrusion process, extrude high temperature resistant PVC inner restrictive coating (9) and nano-nylon external sheath layer (10) successively, wherein the thickness of high temperature resistant PVC inner restrictive coating (9) is 0.7-0.75mm, and extruding temperature is 145 ~ 185 DEG C; The thickness of nano-nylon external sheath layer (10) is 0.4-0.45mm, and extruding temperature is 215 ~ 265 DEG C; After through hot water storgae, cold rinse bank cooling twice, hot water storgae temperature at 50 ~ 60 DEG C, cold rinse bank temperature at 20 ~ 25 DEG C, one-shot forming.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103996452A (en) * | 2014-05-07 | 2014-08-20 | 浙江一舟电子科技股份有限公司 | Lift cable |
| CN107230509A (en) * | 2017-07-07 | 2017-10-03 | 山东太平洋光纤光缆有限公司 | A kind of fire-fighting special photoelectric composite rope and preparation method thereof |
| CN107329222A (en) * | 2017-08-09 | 2017-11-07 | 长飞光纤光缆股份有限公司 | A kind of anti-insect bite covered wire cable of self-bearing type |
| CN108039243A (en) * | 2017-12-06 | 2018-05-15 | 山东太平洋光纤光缆有限公司 | A kind of resistance to dragging optoelectronic composite cable and manufacture method |
| CN108022690A (en) * | 2017-12-06 | 2018-05-11 | 山东太平洋光纤光缆有限公司 | A kind of pipe band laying optoelectronic composite cable and manufacture method |
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| CN201600958U (en) * | 2010-02-09 | 2010-10-06 | 上海老港申菱电子电缆有限公司 | Optical fiber communication travelling cable structure for an elevator |
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