CN104730668B - Layer-stranding cable and preparation method - Google Patents
Layer-stranding cable and preparation method Download PDFInfo
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- CN104730668B CN104730668B CN201510196316.7A CN201510196316A CN104730668B CN 104730668 B CN104730668 B CN 104730668B CN 201510196316 A CN201510196316 A CN 201510196316A CN 104730668 B CN104730668 B CN 104730668B
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- loose tube
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4434—Central member to take up tensile loads
-
- 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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- 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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ropes Or Cables (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to technical field of cables, more particularly, to layer-stranding cable, it includes cable core and extrusion molding is coated on restrictive coating outside cable core, it is characterized in that the cable core is made up of centrally located reinforcer, more Loose tubes being twisted around reinforcer, the fixed bed that all Loose tube integral coatings are lived, the packed layer outside fixed bed, any two adjacent Loose tubes are mutually circumscribed, all have an at least optical fiber in every Loose tube；Fixed bed is liquid-tight envelope relative to the Loose tube of inside, and the material of fixed bed is polypropylene or polyethylene or polybutylene terephthalate (PBT).Present invention further teaches the preparation method of layer-stranding cable.The present invention have it is simple in construction, be easy to make, be more cost-effective, temperature becomes stable optical performance after wide scope becomes, and the machinery equipment used is simple, less investment；The beneficial effects such as block-water effect is excellent, cable core length is understood.
Description
Technical field
The invention belongs to technical field of cables, more particularly, to layer-stranding cable and preparation method.
Background technology
People's Republic of China's post and telecommunications professional standard：The basic of layer-stranding cable is defined in YD/T 901-2009
Structure and requirement, its layer-stranding cable are to be twisted by more Loose tubes and presumable gasket for packing around center reinforcemen, then
Yarn class material is dressed outside in intertwist body and forms cable core, is made cable core structure stable, is then coated protective layer forming layer again in cable core bag
Stranded cables, the material that blocks water is filled or unfilled with cable core gap.This structure is primarily present following defect：For wrapping up yarn
Class material requirement is higher, should there is enough intensity, is not to be broken in machine wrapping, requires low temperature again and becomes contraction
Or expansion character, if temperature change contraction is excessive, easily causes and stab Loose tube, cause fibercuts what is more, have a strong impact on communication；
If warm variable expansion is excessive, wrapping can be made not tight, insecure, cause intertwist body coiling or scattering in, become Loose tube
Shape causes fiber transmission performance to reduce.Layer of the prior art twists optical cable sheath material, under the conditions of hot and humid, Yi Xi
Go out, aging intensity appearance more than 50% is greatly lowered, and significant change occurs for electrical property；Due to sheath in oils environment
It is weightless excessive, it is impossible to be worked more than 12 hours；5Kg, 100 DEG C, 20min i.e. can split, pole can lead to simultaneously after making cable
Cross combustion test as defined in FV levels and GB2408-80/I.
On the other hand, in order that optical cable core reaches effectively blocks water, it is necessary to blocked water material in the inside and outside all fillings of intertwist body,
The filling for material that block water needs professional equipment, and is not easy to reach preferable block-water effect.
Intertwist body using yarn class material due to being wrapped up, therefore, it is impossible to learn the length of intertwist body by easy method.
Therefore, people expect there is better method to solve the above problems.
The content of the invention
In order to solve the above problems, an object of the present invention is to disclose a kind of layer-stranding cable；The purpose of the present invention it
Second, disclose the preparation method of the layer-stranding cable；They are realized using following technical scheme.
Layer-stranding cable in the first embodiment of the present invention, it includes cable core and extrusion molding is coated on outside cable core
Restrictive coating, it is characterised in that the cable core by centrally located reinforcer, more Loose tubes being twisted around reinforcer, will be all
The fixed bed that Loose tube integral coating is lived, the packed layer outside fixed bed are formed, and any two adjacent Loose tubes are phases
Circumscribed, all there is an at least optical fiber in every Loose tube；Fixed bed is liquid-tight envelope relative to the Loose tube of inside,
The material of fixed bed is polypropylene or polyethylene or polybutylene terephthalate (PBT).
The layer-stranding cable of another embodiment in the first embodiment of the present invention, it includes cable core and extrusion molding bag
The restrictive coating overlayed on outside cable core, it is characterised in that the cable core is twisted more by centrally located reinforcer, around reinforcer
Root Loose tube, the fixed bed that all Loose tube integral coatings are lived, the packed layer outside fixed bed are formed, adjacent pine set
Pipe can also be two-by-two mutually between nontangential and adjacent Loose tube spacing maximum be 0.2mm；Fixed bed extend into loose set
In the internal clearance that pipe is formed, all there is an at least optical fiber in every Loose tube；Fixed bed is relative to internal Loose tube
It is liquid-tight envelope, the material of fixed bed is polypropylene or polyethylene or polybutylene terephthalate (PBT).
Layer-stranding cable described above, it is characterised in that the material of the packed layer is polypropylene or polyethylene, and is filled out
The material of the material and fixed bed that fill layer differs.
Layer-stranding cable in the second embodiment of the present invention, it includes cable core and extrusion molding is coated on outside cable core
Restrictive coating, it is characterised in that the cable core by centrally located reinforcer, more Loose tubes being twisted around reinforcer, will be all
The fixed bed that Loose tube integral coating is lived is formed, and the Loose tube of arbitrary neighborhood is mutual nontangential and adjacent Loose tube two-by-two
Between spacing maximum be 0.2mm, fixed bed is extend into the internal clearance of Loose tube formation, is all had extremely in every Loose tube
A few optical fiber；Fixed bed is liquid-tight envelope relative to the Loose tube of inside, and the material of fixed bed is polypropylene or poly- second
Alkene or polybutylene terephthalate (PBT).
Further, the layer-stranding cable described in embodiment two, it include cable core and extrusion molding be coated on cable core it
Outer restrictive coating, it is characterised in that the cable core is by centrally located reinforcer, more Loose tubes being twisted around reinforcer, general
The fixed bed that all Loose tube integral coatings are lived is formed, and adjacent Loose tube is mutually circumscribed, is all had extremely in every Loose tube
A few optical fiber；Fixed bed is liquid-tight envelope relative to the Loose tube of inside, and the material of fixed bed is polypropylene or poly- second
Alkene or polybutylene terephthalate (PBT).
Layer-stranding cable in the 3rd embodiment of the present invention, it includes cable core and extrusion molding is coated on outside cable core
Restrictive coating, it is characterised in that the cable core is by centrally located reinforcer, at least Loose tube, extremely being twisted around reinforcer
A few gasket for packing, the fixed bed composition for living all Loose tubes and gasket for packing integral coating, when having more Loose tubes, any phase
Adjacent Loose tube is that the spacing maximum between mutually nontangential and adjacent Loose tube is 0.2mm, when having more gasket for packings,
The gasket for packing of arbitrary neighborhood is that the spacing maximum between mutually nontangential and adjacent gasket for packing is 0.2mm, adjacent pine set
Pipe and gasket for packing are that the spacing maximum between mutually nontangential and adjacent Loose tube and gasket for packing is 0.2mm, and fixed bed is stretched
Enter in the internal clearance formed to Loose tube, gasket for packing, all there is an at least optical fiber in every Loose tube；The number of Loose tube
Amount and the quantity sum of gasket for packing are not less than 3；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, fixed bed
Material be polypropylene or polyethylene or polybutylene terephthalate (PBT).
Further, the layer-stranding cable described in embodiment three, it include cable core and extrusion molding be coated on cable core it
Outer restrictive coating, it is characterised in that the cable core is by centrally located reinforcer, at least one pine set being twisted around reinforcer
Pipe, at least a gasket for packing, the fixed bed composition for living all Loose tubes and gasket for packing integral coating, when having more Loose tubes,
The Loose tube of arbitrary neighborhood is tangent, and when having more gasket for packings, the gasket for packing of arbitrary neighborhood is tangent, adjacent Loose tube
It is tangent with gasket for packing, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and the number of gasket for packing
Measure sum and be not less than 3；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is polypropylene
Or polyethylene or polybutylene terephthalate (PBT).
Layer-stranding cable in the 4th embodiment of the present invention, it includes cable core, the first guarantor outside cable core
Sheath, the second protective layer outside the first protective layer and extrusion molding are coated on the restrictive coating outside the second protective layer, and its feature exists
In the cable core by centrally located reinforcer, at least Loose tube being twisted around reinforcer, at least a gasket for packing, general
The fixed bed that all Loose tubes and all gasket for packing integral coatings are lived is formed, when having more Loose tubes, the Loose tube of arbitrary neighborhood
It is that spacing maximum mutually between nontangential and adjacent Loose tube is 0.2mm, when having more gasket for packings, arbitrary neighborhood
Gasket for packing is that spacing maximum mutually between nontangential and adjacent gasket for packing is 0.2mm, adjacent Loose tube and gasket for packing
It is that spacing maximum mutually between nontangential and adjacent Loose tube and gasket for packing is 0.2mm, fixed bed extend into loose set
In the internal clearance that pipe, gasket for packing are formed, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and filling
The quantity sum of rope is not less than 3；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is
Polypropylene or polyethylene or polybutylene terephthalate (PBT)；The material of first protective layer is waterstop, the material of the second protective layer
Material is steel band or aluminium strip.
Further, the layer-stranding cable described in embodiment four, it includes cable core, first outside cable core
Protective layer, the second protective layer outside the first protective layer and extrusion molding are coated on the restrictive coating outside the second protective layer, its feature
Be the cable core by centrally located reinforcer, around reinforcer be twisted an at least Loose tube, an at least gasket for packing,
The fixed bed that all Loose tubes and all gasket for packing integral coatings are lived is formed, when having more Loose tubes, the pine set of arbitrary neighborhood
Pipe is tangent, and when having more gasket for packings, the gasket for packing of arbitrary neighborhood is that tangent, adjacent Loose tube with gasket for packing is tangent
, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and the quantity sum of gasket for packing are not less than 3；
Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is polypropylene or polyethylene or poly- pair
Benzene dicarboxylic acid butanediol ester；The material of first protective layer is waterstop, and the material of the second protective layer is steel band or aluminium strip.
The preparation method of layer-stranding cable, it is characterised in that it includes following steps：
The first step：The step of colouring optical fibres:Take G.652 type or G.653 type or G.654 type or G.655 type or G.656
Type or G.657 type or the naked optical fiber of A1a types or A1b types or A1c types or A1d types or OM1 types or OM2 types or OM3 types are in light
UV solidification colorings are carried out on fine tinting machine, the thickness for making dyed layer is 1~3 μm, color solidification degree >=85%；Eight times repeatedly, formed
Eight optical fibers, the dyed layer of any two different optical fibers have different colors；
Second step：Loose tube forming step：Modified polypropene or polybutylene terephthalate (PBT) is taken to be squeezed secondary coated
Melted in the spiral shell chamber of molding machine, and add 1%~3% color masterbatch or poly terephthalic acid fourth two of modified polypropene gross weight
1%~3% color masterbatch of alcohol ester gross weight melts and stirred together；Stretched by the extrusion head of secondary coated extruding machine
Go out the internal original Loose tube with cavity, while the cavity that the optical fiber that the first step is formed is penetrated inside original Loose tube
In, the bosh that original Loose tube makes the optical fiber in cavity be moved through 20~40 DEG C with original Loose tube is drawn,
Invention product Loose tube, the length of the optical fiber in finished product Loose tube are 1.002~1.008 times of finished product Loose tube length；Instead
Again three times, three finished product Loose tubes are formed；
3rd step：Cable core forming step：(1) steel wire or fiberglass-reinforced plastic lever is taken to be placed on stranding as reinforcer
On the reinforcer discharge device of machine and pull out the first medium pore through the first twisted mould, then pass through the second twisted mould
First centre bore, after the 3rd twisted mould the first interstitial hole, be then passed through crossing cable core hole inside extrusion head；(2) by
Finished product Loose tube that is that two steps are formed and being wound on the first disk tool is by the first scroll wheel groups and through the of the first twisted mould
One edge hole, the first edge hole for being then passed through the second twisted mould, the first holes around for being subsequently passed through the 3rd twisted mould, then
Sky crosses crossing cable core hole and ensuring that finished product Loose tube is located at outside reinforcer inside extrusion head；By second step formed and be wound on
Finished product Loose tube on second disk tool by the second scroll wheel groups and through the first edge hole of the first twisted mould, be then passed through the
First edge hole of two twisted moulds, the first holes around for being subsequently passed through the 3rd twisted mould and then sky are crossed inside extrusion head
Cross and cable core hole and ensure that finished product Loose tube is located at outside reinforcer；Finished product that is that second step is formed and being wound on the 3rd disk tool
Loose tube is by the 3rd scroll wheel groups and passes through the first edge hole of the first twisted mould, is then passed through the first of the second twisted mould
Edge hole, the first holes around for being subsequently passed through the 3rd twisted mould and then sky cross crossing cable core hole and ensuring inside extrusion head
Finished product Loose tube is located at outside reinforcer；Make adjacent Loose tube tangent；（3）Drew the reinforcer and pine set of extrusion head
Pipe, and make the first twisted mould, the second twisted mould, the 3rd twisted mould synchronous axial system with rotating mechanism, by poly- the third of melting
In the injecting hole of alkene or polyethylene or polybutylene terephthalate (PBT) injection extrusion head, the right-hand member exit in cable core hole is being crossed
The polypropylene of melting or polyethylene or polybutylene terephthalate (PBT) is set to be close to finished product Loose tube profile using air extractor
Into fixed bed；（4）The bar for taking polypropylene or polyethylene to be formed, which is filled in outside fixed bed, forms packed layer；And then form cable
Core；The material of packed layer and the material of fixed bed differ；
Wherein, the first disk tool can be rotated relative to the first fixed pipe discharging mechanism, and the first scroll wheel groups are put positioned at first
The top of pipe mechanism；Second disk tool can be rotated relative to the second fixed pipe discharging mechanism, and the second scroll wheel groups are put positioned at second
The top of pipe mechanism；3rd disk tool can be rotated relative to the 3rd fixed pipe discharging mechanism, and the 3rd scroll wheel groups are put positioned at the 3rd
The top of pipe mechanism；Along the release direction of Loose tube：3rd pipe discharging mechanism is located at the front of the second pipe discharging mechanism, second puts pipe machine
Structure is located at the front of the first pipe discharging mechanism, the first pipe discharging mechanism is located at positioned at the rear of the first twisted mould, the second twisted mould
The front of first twisted mould, the 3rd twisted mould are positioned at the front of the second twisted mould, extrusion head positioned at the 3rd twisted mould
Tool front；First medium pore, first edge hole are through the first twisted mould and the first medium pore is positioned at the first twisted mould
Center, first edge hole has multiple and is distributed in outside the first medium pore and first edge hole and the first medium pore are not phases
Logical, the distance of the first medium pore central axis and first edge hole central axis is the first spacing；First centre bore, the first side
Positioned at the center of the second twisted mould, the first edge hole has multiple be through the second twisted mould along hole and the first centre bore
And be distributed in outside the first centre bore and the first edge hole and the first centre bore are not communicated with, the first centre bore central axis with
The distance of first edge hole central axis is the second spacing；First interstitial hole, the first holes around are through the second twisted mould
And first interstitial hole positioned at the center of the second twisted mould, the first holes around have it is multiple and be distributed in outside the first interstitial hole and
First holes around and the first interstitial hole are not communicated with, and the first edge hole has multiple and is distributed in outside the first centre bore and the
One edge hole is not communicated with the first centre bore, and the distance of the first interstitial hole central axis and the first holes around central axis is
3rd spacing；The spacing of first the second spacing of spacing ＞ ＞ the 3rd；The injecting hole of extrusion head is connected to logical with cable core hole excessively；
4th step：Restrictive coating forming step：By low-smoke non-halogen flame-retardant polyethylene or LLDPE or low-density
Polyethylene or medium density polyethylene or high density polyethylene (HDPE) by sheath extruding machine extrusion molding be coated on cable core that the 3rd step formed it
Outside, restrictive coating is formed, completes the making of layer-stranding cable.
Layer-stranding cable in the present invention have it is simple in construction, be easy to make, it is more cost-effective, temperature become wide scope become after light
Stable performance is learned, the machinery equipment used is simple, less investment；The beneficial effects such as block-water effect is excellent, cable core length is understood.
Brief description of the drawings
Fig. 1 is the cross-sectional structure schematic diagram of embodiment 1 of the present invention.
Fig. 2 is the cross-sectional structure schematic diagram of embodiment 2 of the present invention.
Fig. 3 is the cross-sectional structure schematic diagram of embodiment 3 of the present invention.
Fig. 4 is the cross-sectional structure schematic diagram of embodiment 4 of the present invention.
Fig. 5 is the dimensional structure diagram for the twisted part used in manufacture method of the present invention.
Embodiment
Embodiment 1 is to the embodiment that embodiment 4 is layer-stranding cable in the present invention；Embodiment 5 is in the present invention
The embodiment of preparation method.
Embodiment 1
See Fig. 1, layer-stranding cable, it includes cable core and extrusion molding is coated on restrictive coating 6 outside cable core, and its feature exists
Integrally wrapped by centrally located reinforcer 3, three Loose tubes 2 being twisted around reinforcer, by all Loose tubes in the cable core
The fixed bed 4 covered, the packed layer 5 outside fixed bed are formed, any two adjacent Loose tubes be it is mutually circumscribed, every
All there are eight optical fibers 1 in Loose tube；Fixed bed is liquid-tight envelope relative to the Loose tube of inside, and the material of fixed bed is
Polypropylene or polyethylene or polybutylene terephthalate (PBT).
Layer-stranding cable described above, it is characterised in that the Loose tube can be other more, in every Loose tube
Optical fiber at least has one.
Further, layer-stranding cable described above, it is characterised in that the adjacent Loose tube can also be two-by-two
Mutually the spacing maximum between nontangential and adjacent Loose tube is 0.2mm；Fixed bed extend into Loose tube formation it is interior between
In gap.
Layer-stranding cable described above, it is characterised in that the material of the packed layer is polypropylene or polyethylene, and is filled out
The material of the material and fixed bed that fill layer differs.
Layer-stranding cable described above, it includes cable core and extrusion molding is coated on restrictive coating outside cable core, its feature
It is that the cable core integrally wraps by centrally located reinforcer, more Loose tubes being twisted around reinforcer, by all Loose tubes
The fixed bed covered, the packed layer outside fixed bed are formed, and any two adjacent Loose tubes are mutually circumscribed, every pines
All there is an at least optical fiber in sleeve pipe；Fixed bed is liquid-tight envelope relative to the Loose tube of inside, the material of fixed bed
It is polypropylene or polyethylene or polybutylene terephthalate (PBT).
Embodiment 2
See Fig. 2, layer-stranding cable, it includes cable core and extrusion molding is coated on restrictive coating 6 outside cable core, and its feature exists
Integrally wrapped by centrally located reinforcer 3, seven Loose tubes 2 being twisted around reinforcer, by all Loose tubes in the cable core
The fixed bed 4 covered is formed, and the Loose tube of arbitrary neighborhood is that mutually the spacing between nontangential and adjacent Loose tube is most two-by-two
Big value is 0.2mm, and fixed bed is extend into the internal clearance of Loose tube formation, all has eight optical fibers 1 in every Loose tube；
Fixed bed is liquid-tight envelope relative to the Loose tube of inside, and the material of fixed bed is polypropylene or polyethylene or poly terephthalic acid
Butanediol ester.
Layer-stranding cable described above, it is characterised in that the Loose tube can be other more, in every Loose tube
Optical fiber at least has one.
Layer-stranding cable described above, it is mutually circumscribed for can also be adjacent Loose tube, and fixed bed does not extend into pine
In the internal clearance that sleeve pipe is formed.
Embodiment 3
See Fig. 3, layer-stranding cable, substantially with embodiment 2, difference is that wherein two Loose tubes are filled rope
7 are replaced；The material of gasket for packing is polypropylene or polyethylene.
Layer-stranding cable in this embodiment, it includes cable core and extrusion molding is coated on restrictive coating outside cable core, its
It is characterised by that the cable core is filled out by centrally located reinforcer, at least Loose tube being twisted around reinforcer, at least one
Fill rope, form the fixed bed that all Loose tubes and gasket for packing integral coating are lived, when having more Loose tubes, the pine set of arbitrary neighborhood
Pipe is that the spacing maximum between mutually nontangential and adjacent Loose tube is 0.2mm, when having more gasket for packings, arbitrary neighborhood
Gasket for packing be that spacing maximum mutually between nontangential and adjacent gasket for packing is 0.2mm, adjacent Loose tube and filling
Rope is that the spacing maximum between mutually nontangential and adjacent Loose tube and gasket for packing is 0.2mm, and fixed bed extend into loose set
In the internal clearance that pipe, gasket for packing are formed, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and filling
The quantity sum of rope is not less than 3；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is
Polypropylene or polyethylene or polybutylene terephthalate (PBT).
Further, the layer-stranding cable described in this embodiment, it include cable core and extrusion molding be coated on cable core it
Outer restrictive coating, it is characterised in that the cable core is by centrally located reinforcer, at least one pine set being twisted around reinforcer
Pipe, at least a gasket for packing, the fixed bed composition for living all Loose tubes and gasket for packing integral coating, when having more Loose tubes,
The Loose tube of arbitrary neighborhood is tangent, and when having more gasket for packings, the gasket for packing of arbitrary neighborhood is tangent, adjacent Loose tube
It is tangent with gasket for packing, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and the number of gasket for packing
Measure sum and be not less than 3；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is polypropylene
Or polyethylene or polybutylene terephthalate (PBT).
Embodiment 4
See Fig. 4, layer-stranding cable, it includes cable core, the first protective layer 8 outside cable core, protected positioned at first
The second protective layer 9 and extrusion molding outside sheath are coated on the restrictive coating 6 outside the second protective layer, it is characterised in that the cable core by
Centrally located reinforcer 3, five Loose tubes, 2, two gasket for packings 7 being twisted around reinforcer, by all Loose tubes and all
The fixed bed 4 that gasket for packing integral coating is lived is formed, and the Loose tube of arbitrary neighborhood is that mutually nontangential, arbitrary neighborhood pine covers two-by-two
Pipe and gasket for packing be two-by-two mutually nontangential, arbitrary neighborhood gasket for packing be two-by-two mutually nontangential and adjacent Loose tube it
Between spacing maximum be 0.2mm, the spacing maximum between adjacent gasket for packing is 0.2mm, adjacent Loose tube and gasket for packing it
Between spacing maximum be 0.2mm, fixed bed is extend into the internal clearance that Loose tube and gasket for packing are formed, in every Loose tube all
With eight optical fibers 1；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is poly-
Propylene or polyethylene or polybutylene terephthalate (PBT)；The material of first protective layer is waterstop, the material of the second protective layer
It is steel band or aluminium strip.
Certainly, in this embodiment, can also be between adjacent Loose tube it is to be between tangent, adjacent gasket for packing
It is tangent between tangent, adjacent Loose tube and gasket for packing.
Layer-stranding cable described in this embodiment, it include cable core, the first protective layer outside cable core,
The second protective layer and extrusion molding outside the first protective layer are coated on the restrictive coating outside the second protective layer, it is characterised in that institute
State cable core by centrally located reinforcer, at least Loose tube being twisted around reinforcer, an at least gasket for packing, will be all
The fixed bed that Loose tube and all gasket for packing integral coatings are lived is formed, and when having more Loose tubes, the Loose tube of arbitrary neighborhood is mutual
Nontangential, and the spacing maximum between adjacent Loose tube is 0.2mm, and when having more gasket for packings, the filling of arbitrary neighborhood
Rope is that the spacing maximum between mutually nontangential and adjacent gasket for packing is 0.2mm, and adjacent Loose tube is mutual with gasket for packing
Nontangential, and the spacing maximum between adjacent Loose tube and gasket for packing is 0.2mm, fixed bed extend into Loose tube, filled out
Fill in the internal clearance that rope is formed, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and gasket for packing
Quantity sum is not less than 3；Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is poly- third
Alkene or polyethylene or polybutylene terephthalate (PBT)；The material of first protective layer is waterstop, and the material of the second protective layer is
Steel band or aluminium strip.
Further, the layer-stranding cable described in this embodiment, it includes cable core, first outside cable core
Protective layer, the second protective layer outside the first protective layer and extrusion molding are coated on the restrictive coating outside the second protective layer, its feature
Be the cable core by centrally located reinforcer, around reinforcer be twisted an at least Loose tube, an at least gasket for packing,
The fixed bed that all Loose tubes and all gasket for packing integral coatings are lived is formed, when having more Loose tubes, the pine set of arbitrary neighborhood
Pipe is tangent, and when having more gasket for packings, the gasket for packing of arbitrary neighborhood is that tangent, adjacent Loose tube with gasket for packing is tangent
, all there is an at least optical fiber in every Loose tube；The quantity of Loose tube and the quantity sum of gasket for packing are not less than 3；
Fixed bed is liquid-tight envelope relative to the Loose tube and gasket for packing of inside, and the material of fixed bed is polypropylene or polyethylene or poly- pair
Benzene dicarboxylic acid butanediol ester；The material of first protective layer is waterstop, and the material of the second protective layer is steel band or aluminium strip.
In this embodiment, the difference depending on application scenario can also individually omit the first protective layer or individually omit second and protect
Sheath.
In embodiment 3 and embodiment 4, two gasket for packings are not limited to, can be other more gasket for packings, can also
It is an only gasket for packing.
Certainly, layer-stranding cable of the embodiment 1 of the present invention into embodiment 3 described in any embodiment, can
As embodiment 4, the first protective layer and the second protective layer are set between cable core and restrictive coating；Further, can be with
First protective layer is only set between cable core and restrictive coating or the second protective layer is only set.
Layer-stranding cable described in any of the above-described embodiment, a variety of protective layers can also be set outside restrictive coating, such as
Steel belt layer is first set, then external sheath layer is set, so can more effectively protect optical fiber therein, makes the performances such as mechanical resistance to compression big
Big enhancing；Nylon layer can also be set outside restrictive coating, can so reach the purpose of ant proof；Etc., it is numerous.
Layer-stranding cable described in any of the above-described embodiment, it is characterised in that the material of the reinforcer be steel wire or
Fiberglass-reinforced plastic lever.
As further simplifying, the layer-stranding cable described in above-mentioned embodiment 1,2, it is characterised in that the cable core
In Loose tube can also be and be arranged in parallel, rather than it is twisted set, be arranged in parallel the twisted dress that can be saved in cabling device
Put, in this embodiment it is not even necessary to cabling device；It is, of course, also possible to save Loose tube and optical fiber due to twisted caused length, one can be entered
Step saves cost.
As further simplifying, the layer-stranding cable described in above-mentioned embodiment 3,4, it is characterised in that the cable core
In Loose tube, gasket for packing can also be and be arranged in parallel, rather than it is twisted set, be arrangeding in parallel to save in cabling device
Stranding device, in this embodiment it is not even necessary to cabling device；It is, of course, also possible to Loose tube and optical fiber are saved due to twisted caused length, can
Further to save cost.
Layer-stranding cable described in any of the above-described embodiment, it is characterised in that the material of the restrictive coating be low cigarette without
Halogen flame-proof polyethylene or LLDPE or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE).
Layer-stranding cable described in any of the above-described embodiment, it is characterised in that the material of the Loose tube is modified poly-
Propylene or polybutylene terephthalate (PBT).
Layer-stranding cable described in any of the above-described embodiment, it is characterised in that the optical fiber be G.652 type or
G.653 type or G.654 type or G.655 type or G.656 type or G.657 type or A1a types or A1b types or A1c types or A1d types or OM1
Type or OM2 types or OM3 types.
Embodiment 5
Exist see Fig. 5, and referring to figs. 1 to Fig. 4, the preparation method of the layer-stranding cable described in embodiment 1, its feature
Include following steps in it：
The first step：The step of colouring optical fibres:Take G.652 type or G.653 type or G.654 type or G.655 type or G.656
Type or G.657 type or the naked optical fiber of A1a types or A1b types or A1c types or A1d types or OM1 types or OM2 types or OM3 types are in light
UV solidification colorings are carried out on fine tinting machine, the thickness for making dyed layer is 1~3 μm, color solidification degree >=85%；Eight times repeatedly, formed
Eight optical fibers, the dyed layer of any two different optical fibers have different colors；
Second step：Loose tube forming step：Modified polypropene or polybutylene terephthalate (PBT) is taken to be squeezed secondary coated
Melted in the spiral shell chamber of molding machine, and add 1%~3% color masterbatch or poly terephthalic acid fourth two of modified polypropene gross weight
1%~3% color masterbatch of alcohol ester gross weight melts and stirred together；Stretched by the extrusion head of secondary coated extruding machine
Go out the internal original Loose tube with cavity, while the cavity that the optical fiber that the first step is formed is penetrated inside original Loose tube
In, the bosh that original Loose tube makes the optical fiber in cavity be moved through 20~40 DEG C with original Loose tube is drawn,
Invention product Loose tube, the length of the optical fiber in finished product Loose tube are 1.002~1.008 times of finished product Loose tube length；Instead
Again three times, three finished product Loose tubes 2 are formed；
3rd step：Cable core forming step：(1) steel wire or fiberglass-reinforced plastic lever is taken to be placed on into as reinforcer 3
On the reinforcer discharge device of cable machine and pull out the first medium pore 410 through the first twisted mould 41, then pass through the second strand
First centre bore of matched moulds tool 42, the first interstitial hole after the 3rd twisted mould 43, the mistake that is then passed through inside extrusion head 51
Cable core hole 52；(2) by second step formed and be wound on the first disk tool 11 on finished product Loose tube 2 by the first scroll wheel groups 31 simultaneously
Through the first edge hole 411 of the first twisted mould 41, it is then passed through the first edge hole 421 of the second twisted mould 42, then wears
Cross the first holes around 431 of the 3rd twisted mould 43 and then sky crosses crossing cable core hole and ensuring finished product pine inside extrusion head 51
Sleeve pipe is located at outside reinforcer；Finished product Loose tube 2 that is that second step is formed and being wound on the second disk tool 12 rolls by second
Wheel group 32 simultaneously passes through the first edge hole 411 of the first twisted mould 41, is then passed through the first edge hole of the second twisted mould 42
421st, the first holes around 431 and then empty cross inside extrusion head 51 for being subsequently passed through the 3rd twisted mould 43 cross cable core hole simultaneously
Ensure that finished product Loose tube is located at outside reinforcer；Finished product Loose tube 2 that is that second step is formed and being wound on the 3rd disk tool 13 leads to
Cross the 3rd scroll wheel groups 33 and through the first edge hole 411 of the first twisted mould 41, be then passed through the of the second twisted mould 42
One edge hole 421, the first holes around 431 for being subsequently passed through the 3rd twisted mould 43 and then the empty mistake crossed inside extrusion head 51
Cable core hole simultaneously ensures that finished product Loose tube is located at outside reinforcer；Make adjacent Loose tube tangent；（3）Drew adding for extrusion head
Strong part and Loose tube, and make the first twisted mould, the second twisted mould, the 3rd twisted mould synchronous axial system with rotating mechanism, will
In the injecting hole 53 of polypropylene or polyethylene or polybutylene terephthalate (PBT) the injection extrusion head of melting, cable core hole is being crossed
Right-hand member exit be close into the polypropylene of melting or polyethylene or polybutylene terephthalate (PBT) using air extractor
Fixed bed is formed outside product Loose tube；（4）The bar for taking polypropylene or polyethylene to be formed, which is filled in outside fixed bed, forms filling
Layer；And then form cable core；The material of packed layer and the material of fixed bed differ；
Wherein, the first disk tool 11 can rotate relative to the first fixed pipe discharging mechanism 21, and the first scroll wheel groups 31 are located at
The top of first pipe discharging mechanism 21；Second disk tool 12 can rotate relative to the second fixed pipe discharging mechanism 22, the second scroll wheel
Group 32 is located at the top of the second pipe discharging mechanism 22；3rd disk tool 13 can rotate relative to the 3rd fixed pipe discharging mechanism 23, the
Three scroll wheel groups 33 are located at the top of the 3rd pipe discharging mechanism 23；Along the release direction of Loose tube：3rd pipe discharging mechanism is located at second
The front of pipe discharging mechanism, the second pipe discharging mechanism are located at the front of the first pipe discharging mechanism, the first pipe discharging mechanism positioned at the first twisted mould
The rear of tool, the second twisted mould are positioned at the front of the first twisted mould, the 3rd twisted mould before the second twisted mould
Side, extrusion head are in front of the 3rd twisted mould；First medium pore, first edge hole be through the first twisted mould and the
Positioned at the center of the first twisted mould, first edge hole has multiple and is distributed in outside the first medium pore and first one medium pore
Edge hole and the first medium pore are not communicated with, and the distance of the first medium pore central axis and first edge hole central axis is the
One spacing；First centre bore, the first edge hole are through the second twisted mould and the first centre bore is positioned at the second twisted mould
Center, the first edge hole has multiple and is distributed in outside the first centre bore and the first edge hole and the first centre bore are not phases
Logical, the distance of the first centre bore central axis and the first edge hole central axis is the second spacing；First interstitial hole, first week
Hole is through the second twisted mould and the first interstitial hole is enclosed positioned at the center of the second twisted mould, and the first holes around has multiple
And be distributed in outside the first interstitial hole and the first holes around and the first interstitial hole are not communicated with, the first edge hole have it is multiple and
It is distributed in outside the first centre bore and the first edge hole and the first centre bore is not communicated with, the first interstitial hole central axis and the
The distance of one holes around central axis is the 3rd spacing；The spacing of first the second spacing of spacing ＞ ＞ the 3rd；The injection of extrusion head
Hole is connected to logical with cable core hole excessively；
4th step：Restrictive coating forming step：By low-smoke non-halogen flame-retardant polyethylene or LLDPE or low-density
Polyethylene or medium density polyethylene or high density polyethylene (HDPE) by sheath extruding machine extrusion molding be coated on cable core that the 3rd step formed it
Outside, restrictive coating is formed, completes the making of layer-stranding cable.
Certainly, in the above method, Loose tube is not limited to three, can also be more；As long as have to the disk for coiling Loose tube,
Pipe discharging mechanism, scroll wheel groups correspondingly increase；Optical fiber in Loose tube is also not limited to eight, but at least one.
The preparation method of another layer-stranding cable described in embodiment 1, it is characterised in that it includes following step
Suddenly：
The first step：The step of colouring optical fibres:Take G.652 type or G.653 type or G.654 type or G.655 type or G.656
Type or G.657 type or the naked optical fiber of A1a types or A1b types or A1c types or A1d types or OM1 types or OM2 types or OM3 types are in light
UV solidification colorings are carried out on fine tinting machine, the thickness for making dyed layer is 1~3 μm, color solidification degree >=85%；Eight times repeatedly, formed
Eight optical fibers, the dyed layer of any two different optical fibers have different colors；
Second step：Loose tube forming step：Modified polypropene or polybutylene terephthalate (PBT) is taken to be squeezed secondary coated
Melted in the spiral shell chamber of molding machine, and add 1%~3% color masterbatch or poly terephthalic acid fourth two of modified polypropene gross weight
1%~3% color masterbatch of alcohol ester gross weight melts and stirred together；Stretched by the extrusion head of secondary coated extruding machine
Go out the internal original Loose tube with cavity, while the cavity that the optical fiber that the first step is formed is penetrated inside original Loose tube
In, the bosh that original Loose tube makes the optical fiber in cavity be moved through 20~40 DEG C with original Loose tube is drawn,
Invention product Loose tube, the length of the optical fiber in finished product Loose tube are 1.002~1.008 times of finished product Loose tube length；Instead
Again three times, three finished product Loose tubes 2 are formed；
3rd step：Cable core forming step：(1) steel wire or fiberglass-reinforced plastic lever is taken to be placed on into as reinforcer 3
On the reinforcer discharge device of cable machine and pull out the first medium pore 410 through the first twisted mould 41, then pass through the second strand
First centre bore of matched moulds tool 42, the first interstitial hole after the 3rd twisted mould 43, the mistake that is then passed through inside extrusion head 51
Cable core hole 52；(2) by second step formed and be wound on the first disk tool 11 on finished product Loose tube 2 by the first scroll wheel groups 31 simultaneously
Through the first edge hole 411 of the first twisted mould 41, it is then passed through the first edge hole 421 of the second twisted mould 42, then wears
Cross the first holes around 431 of the 3rd twisted mould 43 and then sky crosses crossing cable core hole and ensuring finished product pine inside extrusion head 51
Sleeve pipe is located at outside reinforcer；Finished product Loose tube 2 that is that second step is formed and being wound on the second disk tool 12 rolls by second
Wheel group 32 simultaneously passes through the first edge hole 411 of the first twisted mould 41, is then passed through the first edge hole of the second twisted mould 42
421st, the first holes around 431 and then empty cross inside extrusion head 51 for being subsequently passed through the 3rd twisted mould 43 cross cable core hole simultaneously
Ensure that finished product Loose tube is located at outside reinforcer；Finished product Loose tube 2 that is that second step is formed and being wound on the 3rd disk tool 13 leads to
Cross the 3rd scroll wheel groups 33 and through the first edge hole 411 of the first twisted mould 41, be then passed through the of the second twisted mould 42
One edge hole 421, the first holes around 431 for being subsequently passed through the 3rd twisted mould 43 and then the empty mistake crossed inside extrusion head 51
Cable core hole simultaneously ensures that finished product Loose tube is located at outside reinforcer；Make that there is the gap for being not more than 0.2mm between adjacent Loose tube；
（3）Drew the reinforcer and Loose tube of extrusion head, and make the first twisted mould, the second twisted mould, the with rotating mechanism
Three twisted mould synchronous axial systems, inject extrusion head by the polypropylene of melting or polyethylene or polybutylene terephthalate (PBT)
In injecting hole 53, air extractor is used to make the polypropylene or polyethylene or poly- to benzene two of melting in the right-hand member exit for crossing cable core hole
Formic acid butanediol ester is close to outside finished product Loose tube and entered in the internal clearance that Loose tube is formed the fixed bed for forming integration；
（4）The bar for taking polypropylene or polyethylene to be formed, which is filled in outside fixed bed, forms packed layer；And then form cable core；Packed layer
Material and the material of fixed bed differ；
Wherein, the first disk tool 11 can rotate relative to the first fixed pipe discharging mechanism 21, and the first scroll wheel groups 31 are located at
The top of first pipe discharging mechanism 21；Second disk tool 12 can rotate relative to the second fixed pipe discharging mechanism 22, the second scroll wheel
Group 32 is located at the top of the second pipe discharging mechanism 22；3rd disk tool 13 can rotate relative to the 3rd fixed pipe discharging mechanism 23, the
Three scroll wheel groups 33 are located at the top of the 3rd pipe discharging mechanism 23；Along the release direction of Loose tube：3rd pipe discharging mechanism is located at second
The front of pipe discharging mechanism, the second pipe discharging mechanism are located at the front of the first pipe discharging mechanism, the first pipe discharging mechanism positioned at the first twisted mould
The rear of tool, the second twisted mould are positioned at the front of the first twisted mould, the 3rd twisted mould before the second twisted mould
Side, extrusion head are in front of the 3rd twisted mould；First medium pore, first edge hole be through the first twisted mould and the
Positioned at the center of the first twisted mould, first edge hole has multiple and is distributed in outside the first medium pore and first one medium pore
Edge hole and the first medium pore are not communicated with, and the distance of the first medium pore central axis and first edge hole central axis is the
One spacing；First centre bore, the first edge hole are through the second twisted mould and the first centre bore is positioned at the second twisted mould
Center, the first edge hole has multiple and is distributed in outside the first centre bore and the first edge hole and the first centre bore are not phases
Logical, the distance of the first centre bore central axis and the first edge hole central axis is the second spacing；First interstitial hole, first week
Hole is through the second twisted mould and the first interstitial hole is enclosed positioned at the center of the second twisted mould, and the first holes around has multiple
And be distributed in outside the first interstitial hole and the first holes around and the first interstitial hole are not communicated with, the first edge hole have it is multiple and
It is distributed in outside the first centre bore and the first edge hole and the first centre bore is not communicated with, the first interstitial hole central axis and the
The distance of one holes around central axis is the 3rd spacing；The spacing of first the second spacing of spacing ＞ ＞ the 3rd；The injection of extrusion head
Hole is connected to logical with cable core hole excessively；
4th step：Restrictive coating forming step：By low-smoke non-halogen flame-retardant polyethylene or LLDPE or low-density
Polyethylene or medium density polyethylene or high density polyethylene (HDPE) by sheath extruding machine extrusion molding be coated on cable core that the 3rd step formed it
Outside, restrictive coating is formed, completes the making of layer-stranding cable.
Or in optical cable described above or fiber optic cable production method, the restrictive coating described in any embodiment is by following weight
The raw material composition of part：BS：30~55 parts；Poly- (2,6 diethyl-Isosorbide-5-Nitrae-phenylene) ether：25~50
Part；LLDPE：15~35 parts；Polypropylene：20~35 parts；Butylene：15~45 parts；The commercially available cycloalkanes of model 4006
Base white oil：8~30 parts；Trioctyl phosphate：30~50 parts；Lubricant：1~4 part；Cable jacket is anti-oxidant with model 1010
Agent：0.3~0.8 part；Model UV-234 or UV-360 ultraviolet-resistant absorbent：0.3~0.7 part；Titanium dioxide：5~10 parts；It is poly-
Ethylene waxes：4~8 parts.The restrictive coating of above-mentioned formula after aging in 2400 hours, does not separate out under 85 DEG C and 85 humidity environments, machinery
Intensity can keep before ageing more than 96%, and electrical property changes without obvious；Soaked in 97# gasoline 24 hours bodies lost weights≤
10%；Under 135 DEG C, 1h and 12Kg loading conditions, there is no cracking phenomena；Make passed through after cable FV-0 levels and
Combustion test as defined in GB2408-80/I.
In the present invention, the spacing of first the second spacing of spacing ＞ ＞ the 3rd, Loose tube/gasket for packing in cable core can be made progressively
When shaping reaches fixed formable layer, the technique effect such as its indeformable, easy shaping.
Certainly, in the above method, Loose tube is not limited to three, can also be more；As long as have to the disk for coiling Loose tube,
Pipe discharging mechanism, scroll wheel groups correspondingly increase；Optical fiber in Loose tube is also not limited to eight, but at least one.
It is of the invention with it is traditional using yarn class wrap up compared with, have speed of production faster the advantages of, reached 250m/
Min most fast stranding speed, and stranding speed only 80m/min of the prior art；Hence it is evident that save electric power input and
Artificial input.
The infiltration test of 10000 optical cables is equally done, it is of the invention compared with traditional layer-stranding cable, by YD/T901-
Method test as defined in 2009, there is not infiltration phenomenon in the present invention, and traditional layer-stranding cable has reached 10% infiltration
Rate, therefore, the present invention have more preferable water permeability resistance energy.
The present invention is placed in -50 to+90 DEG C of temperature test chambers and done experiment, and with -50 DEG C ,+90 DEG C, per temperature spot, holding 24 is small
When, it is once alternately a circulation, continuous 300 times, maximum temperature change additional attenuation value is 0.035dB/km；And existing skill
Layer-stranding cable in art, in the range of said temperature, 2 circulations are 0.3dB/km there have been temperature change additional attenuation value
Phenomenon, have impact on being normally carried out for optic communication, through dissection, have on the Loose tube of many places occur prick trace;Therefore, the present invention has more
Excellent temperature resistance becomes performance.
In the present invention, length mark can be stamped on fixed bed, the purpose of convenient identification can be reached, meanwhile, may be used also
To use the fixed bed of different colours, reach the purpose of differentiation.
Layer-stranding cable in the present invention have it is simple in construction, be easy to make, it is more cost-effective, temperature become wide scope become after light
Stable performance is learned, the machinery equipment used is simple, less investment；The main Advantageous such as block-water effect is excellent, cable core length is understood
Effect.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that design of the invention can be by other a variety of shapes
Formula is implemented to use, and they are also fallen within protection scope of the present invention.
Claims (1)
1. the preparation method of layer-stranding cable, it is characterised in that it includes following steps：
The first step：The step of colouring optical fibres:Take G.652 type or G.653 type or G.654 type or G.655 type or G.656 type or
G.657 type or the naked optical fiber of A1a types or A1b types or A1c types or A1d types or OM1 types or OM2 types or OM3 types in optical fiber
UV solidification colorings are carried out on color machine, the thickness for making dyed layer is 1~3 μm, color solidification degree >=85%；Eight times repeatedly, form eight
Optical fiber, the dyed layer of any two different optical fibers have different colors；
Second step：Loose tube forming step：Modified polypropene or polybutylene terephthalate (PBT) are taken in secondary coated extruding machine
Spiral shell chamber in melted, and add 1%~3% color masterbatch or polybutylene terephthalate (PBT) of modified polypropene gross weight
1%~3% color masterbatch of gross weight melts and stirred together；It is stretched interior by the extrusion head of secondary coated extruding machine
Portion has the original Loose tube of cavity, while the optical fiber that the first step is formed is penetrated in the cavity inside original Loose tube,
The bosh that original Loose tube makes the optical fiber in cavity be moved through 20~40 DEG C with original Loose tube is drawn, is formed
Finished product Loose tube, the length of the optical fiber in finished product Loose tube are 1.002~1.008 times of finished product Loose tube length；Repeatedly
Three times, three finished product Loose tubes are formed；
3rd step：Cable core forming step：(1) steel wire or fiberglass-reinforced plastic lever is taken to be placed on cable-former as reinforcer
On reinforcer discharge device and pull out the first medium pore through the first twisted mould, then pass through the first of the second twisted mould
Centre bore, after the 3rd twisted mould the first interstitial hole, be then passed through crossing cable core hole inside extrusion head；(2) by second step
Finished product Loose tube that is being formed and being wound on the first disk tool is by the first scroll wheel groups and passes through the first the first side for being twisted mould
Marginal pore, the first edge hole for being then passed through the second twisted mould, the first holes around for being subsequently passed through the 3rd twisted mould and then empty mistake
Crossing cable core hole and ensuring that finished product Loose tube is located at outside reinforcer inside extrusion head；It is that second step is formed and be wound on second
Finished product Loose tube on disk tool by the second scroll wheel groups and passes through the first edge hole of the first twisted mould, is then passed through the second strand
First edge hole of matched moulds tool, the first holes around for being subsequently passed through the 3rd twisted mould and then the empty mistake crossed inside extrusion head
Cable core hole simultaneously ensures that finished product Loose tube is located at outside reinforcer；Finished product pine set that is that second step is formed and being wound on the 3rd disk tool
Pipe is by the 3rd scroll wheel groups and passes through the first edge hole of the first twisted mould, is then passed through the first edge of the second twisted mould
Hole, the first holes around for being subsequently passed through the 3rd twisted mould and then sky cross crossing cable core hole and ensuring finished product inside extrusion head
Loose tube is located at outside reinforcer；Make adjacent Loose tube tangent；（3）The reinforcer and Loose tube of extrusion head were drawn, and
Make the first twisted mould, the second twisted mould, the 3rd twisted mould synchronous axial system with rotating mechanism, by the polypropylene of melting or poly-
In the injecting hole of ethene or polybutylene terephthalate (PBT) injection extrusion head, use and take out in the right-hand member exit for crossing cable core hole
Device of air makes the polypropylene of melting or polyethylene or polybutylene terephthalate (PBT) be close to outside finished product Loose tube and form fixation
Layer；（4）The bar for taking polypropylene or polyethylene to be formed, which is filled in outside fixed bed, forms packed layer；And then form cable core；Fill out
The material of the material and fixed bed that fill layer differs；
Wherein, the first disk tool can rotate relative to the first fixed pipe discharging mechanism, and the first scroll wheel groups put pipe machine positioned at first
The top of structure；Second disk tool can rotate relative to the second fixed pipe discharging mechanism, and the second scroll wheel groups put pipe machine positioned at second
The top of structure；3rd disk tool can rotate relative to the 3rd fixed pipe discharging mechanism, and the 3rd scroll wheel groups put pipe machine positioned at the 3rd
The top of structure；Along the release direction of Loose tube：3rd pipe discharging mechanism is located at the front of the second pipe discharging mechanism, the second pipe discharging mechanism position
It is located at first positioned at the rear of the first twisted mould, the second twisted mould in the front of the first pipe discharging mechanism, the first pipe discharging mechanism
The front of twisted mould, the 3rd twisted mould are positioned at the front of the second twisted mould, extrusion head before the 3rd twisted mould
Side；First medium pore, first edge hole are through the first twisted mould and the first medium pore is in the first twisted mould
Centre, first edge hole have multiple and are distributed in outside the first medium pore and first edge hole and the first medium pore are to be not communicated with
, the distance of the first medium pore central axis and first edge hole central axis is the first spacing；First centre bore, the first edge
Hole is through the second twisted mould and the first centre bore positioned at the center of the second twisted mould, the first edge hole have it is multiple and
It is distributed in outside the first centre bore and the first edge hole and the first centre bore is not communicated with, the first centre bore central axis and the
The distance of one edge hole central axis is the second spacing；First interstitial hole, the first holes around be through the second twisted mould and
Positioned at the center of the second twisted mould, the first holes around has multiple and is distributed in outside the first interstitial hole and the first interstitial hole
One holes around and the first interstitial hole are not communicated with, and the first edge hole has multiple and is distributed in outside the first centre bore and first
Edge hole and the first centre bore are not communicated with, and the distance of the first interstitial hole central axis and the first holes around central axis is the
Three spacing；The spacing of first the second spacing of spacing ＞ ＞ the 3rd；The injecting hole of extrusion head is connected to logical with cable core hole excessively；
4th step：Restrictive coating forming step：Jacket layer material is coated on to the cable of the 3rd step formation by sheath extruding machine extrusion molding
Outside core, restrictive coating is formed, completes the making of layer-stranding cable；Described restrictive coating is made up of the raw material of following parts by weight：
BS：30~55 parts；Poly- (2,6 diethyl-Isosorbide-5-Nitrae-phenylene) ether：25~50 parts；Linea low density gathers
Ethene：15~35 parts；Polypropylene：20~35 parts；Butylene：15~45 parts；The commercially available naphthenic base white oil of model 4006：8~30 parts；
Trioctyl phosphate：30~50 parts；Lubricant：1~4 part；The antioxidant of cable jacket model 1010：0.3~0.8 part；
Model UV-234 or UV-360 ultraviolet-resistant absorbent：0.3~0.7 part；Titanium dioxide：5~10 parts；Tissuemat E：4~8 parts.
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| CN104914541A (en) * | 2015-06-30 | 2015-09-16 | 常州博美新材料科技有限公司 | Multi-core waterproof optical cable |
| CN106019501A (en) * | 2016-05-30 | 2016-10-12 | 河南宏骏通信工程有限公司 | Optical transmission device used for communication engineering |
| CN108761677B (en) * | 2018-04-26 | 2020-07-14 | 上海富瑞电缆股份有限公司 | Optical cable production equipment and system |
| CN109541771B (en) * | 2018-12-27 | 2020-07-24 | 南京华信藤仓光通信有限公司 | Optical cable for producing dry layer-stranded optical fiber ribbon and forming device thereof |
| CN111175918A (en) * | 2019-12-30 | 2020-05-19 | 通鼎互联信息股份有限公司 | Butterfly-shaped optical cable optical fiber heating and steel wire heating wiping arrangement |
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| CN101950059A (en) * | 2010-08-18 | 2011-01-19 | 江苏长飞中利光纤光缆有限公司 | Layer stranded optical cable, preparation method thereof and device for method |
| CN104530626A (en) * | 2015-01-20 | 2015-04-22 | 中利科技集团股份有限公司 | Halogen-free flame retardant thermoplastic elastomer cable material and preparation method thereof |
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| JP2002277701A (en) * | 2001-03-21 | 2002-09-25 | Sumitomo Electric Ind Ltd | Method and device for manufacturing optical cable |
| US9091830B2 (en) * | 2012-09-26 | 2015-07-28 | Corning Cable Systems Llc | Binder film for a fiber optic cable |
| CN203673118U (en) * | 2014-01-02 | 2014-06-25 | 国家电网公司 | Self-supporting optical cable |
| CN204790094U (en) * | 2015-04-23 | 2015-11-18 | 龚利芬 | Layer stranded type optical cable |
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2015
- 2015-04-23 CN CN201510196316.7A patent/CN104730668B/en active Active
- 2015-04-23 CN CN201710925695.8A patent/CN107479160A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950059A (en) * | 2010-08-18 | 2011-01-19 | 江苏长飞中利光纤光缆有限公司 | Layer stranded optical cable, preparation method thereof and device for method |
| CN104530626A (en) * | 2015-01-20 | 2015-04-22 | 中利科技集团股份有限公司 | Halogen-free flame retardant thermoplastic elastomer cable material and preparation method thereof |
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| CN104730668A (en) | 2015-06-24 |
| CN107479160A (en) | 2017-12-15 |
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