CN106950665A

CN106950665A - The manufacture method of layer-stranding cable and layer-stranding cable

Info

Publication number: CN106950665A
Application number: CN201710309573.6A
Authority: CN
Inventors: 吴俊�
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-23
Filing date: 2015-04-23
Publication date: 2017-07-14
Also published as: CN104749728A; CN104749728B

Abstract

The invention belongs to layer-stranding cable technical field, more particularly, to layer-stranding cable and its manufacture method, methods described includes following steps：The step of colouring optical fibres, Loose tube forming step, cable core forming step, restrictive coating forming step.The present invention have it is simple in construction, be easy to make, it is more cost-effective, temperature becomes stable optical performance after wide scope becomes, and the machinery equipment used is simple, less investment；Block-water effect is excellent, cable core length understand etc. beneficial effect.

Description

The manufacture method of layer-stranding cable and layer-stranding cable

The application is Application No.：201510196496.9th, the applying date is：On 04 23rd, 2015, it is entitled：Layer-twisted type The divisional application of the application for a patent for invention of the manufacture method of optical cable.

Technical field

The invention belongs to technical field of cables, more particularly, to the manufacture method of layer-stranding cable and layer-stranding cable.

Background technology

People's Republic of China's post and telecommunications professional standard：The basic knot of layer-stranding cable is defined in YD/T901-2009 Structure and requirement, its layer-stranding cable be by many Loose tubes and presumable gasket for packing around center reinforcemen stranded, Ran Hou Intertwist body dresses outside yarn class material formation cable core, makes cable core structure stable, and then coating protective layer forming layer again in cable core bag twists Formula optical cable, the material that blocks water is filled or unfilled with cable core gap.This structure is primarily present following defect：For wrapping yarn class Material requirement is higher, should there is enough intensity, and fracture is not in machine wrapping, require to become with low temperature again shrink or Expansion character, if temperature, which becomes, shrinks excessive, easily causes and stabs Loose tube, fibercuts is caused what is more, have a strong impact on communication；If Warm variable expansion is excessive, and wrapping can be made not tight, insecure, causes intertwist body in coiling or scattering in, deforms Loose tube Causing fiber transmission performance reduces.On the other hand, in order that optical cable core reaches effectively blocks water, it is necessary to inside and outside all in intertwist body The material that blocks water is filled, the filling for the material that blocks water needs the equipment of specialty, and is difficult to reach preferable block-water effect.Intertwist body by Wrapped up in using yarn class material, therefore, it is impossible to learn the length of intertwist body by easy method.Current sheath material is in tool When having anti-flammability, process velocity is relatively low, makes after sheath, anti-galvano-cautery poor-performing.Therefore, people expect there is better method To solve the above problems.

The content of the invention

In order to solve the above problems, the purpose of the present invention is to disclose the manufacture method of layer-stranding cable；It is using following Technical scheme is realized.

The manufacture 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 A1a types or A1b types or A1c types or A1d types or OM1 types or OM2 types or the naked optical fiber of 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 has 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 The length of optical fiber in finished product Loose tube, finished product Loose tube is 1.002~1.008 times of finished product Loose tube length；Repeatedly Three times, form three finished product Loose tubes；

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 through the first stranded mould the first medium pore, then pass through the first of the second stranded mould Centre bore, after the 3rd stranded mould the first interstitial hole, be then passed through crossing cable core hole inside extrusion head；(2) by second step Formed and be wound on the first disk tool on finished product Loose tube by the first scroll wheel groups and through the first stranded mould the first side Marginal pore, the first edge hole for being then passed through the second stranded mould, it is subsequently passed through the first holes around of the 3rd stranded mould, then passes through 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 Disk tool on finished product Loose tube by the second scroll wheel groups and through the first stranded mould first edge hole, be then passed through the second strand First edge hole of matched moulds tool, it is subsequently passed through the first holes around of the 3rd stranded mould, then passes through mistake 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 passes through the 3rd scroll wheel groups and passes through the first edge hole of the first stranded mould, is then passed through the first edge of the second stranded mould Hole, the first holes around for being subsequently passed through the 3rd stranded mould, then pass through 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 Remain stationary as the first stranded mould, the second stranded mould, the 3rd stranded mould, by the polypropylene or polyethylene of melting or poly- to benzene In the injecting hole of dioctyl phthalate butanediol ester injection extrusion head, make melting crossing the right-hand member exit in cable core hole using air extractor Polypropylene or polyethylene or polybutylene terephthalate (PBT) be close to outside finished product Loose tube and form fixed bed；（4）Take poly- third Alkene or the bar of polyethylene formation are filled in outside fixed bed and form packed layer；And then form cable core；The material of packed layer with The material of fixed bed is differed；

Wherein, the first disk tool can be rotated 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 be rotated 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 be rotated 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 the rear of the first stranded mould, the second stranded mould in the front of the first pipe discharging mechanism, the first pipe discharging mechanism and is located at first The front of stranded mould, the 3rd stranded mould are located at the front of the second stranded mould, extrusion head and are located at before the 3rd stranded mould Side；First medium pore, first edge hole are through the first stranded mould and the first medium pore is located in the first stranded mould Centre, first edge hole has multiple and is distributed in outside the first medium pore and first edge hole and the first medium pore are to be not communicated with , the first medium pore central axis is the first spacing with the distance of first edge hole central axis；First centre bore, the first edge Hole is through the second stranded mould and the first centre bore is located at the center of the second stranded 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 stranded mould and First interstitial hole is located at the center of the second stranded mould, and the first holes around has multiple and is distributed in outside the first interstitial hole and the 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；First The distance between stranded mould and the second stranded mould are 1000~2000mm, between the second stranded mould and the 3rd stranded mould Distance be 500~1000mm, the distance between the first stranded mould and the second stranded mould are the second stranded mould and the 3rd 2~5 times of the distance between stranded mould；

4th step：Restrictive coating forming step：By low-smoke non-halogen flame-retardant polyethylene or LLDPE or low density polyethylene Alkene or medium density polyethylene or high density polyethylene (HDPE) are coated on by sheath extruding machine extrusion molding outside the cable core of the 3rd step formation, shape Into restrictive coating, the making of layer-stranding cable is completed.

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 Performance stabilization is learned, the machinery equipment used is simple, less investment；Block-water effect is excellent, cable core length understand etc. beneficial effect.

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 stranded part used in manufacture method of the present invention.

Embodiment

Embodiment 1 to embodiment 4 is the embodiment of layer-stranding cable in the present invention；During embodiment 5 is 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, it is characterised in that institute Cable core is stated to live by centrally located reinforcer 3, around three stranded Loose tubes 1 of reinforcer, by all Loose tube integral coatings Fixed bed 4, the packed layer 5 outside fixed bed constitute, any two adjacent Loose tubes be it is mutually circumscribed, every pine set All there are eight optical fibers 2 in pipe；Fixed bed is liquid-tight envelope relative to internal Loose tube, and the material of fixed bed is poly- third Alkene or polyethylene or polybutylene terephthalate (PBT).

Layer-stranding cable described above, it is characterised in that the Loose tube can be in other many, 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 is differed.

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 is integrally wrapped by centrally located reinforcer, around many stranded Loose tubes of reinforcer, by all Loose tubes The fixed bed covered, the packed layer outside fixed bed are constituted, and any two adjacent Loose tubes are mutually circumscribed, every pines All there is at least one optical fiber in sleeve pipe；Fixed bed is liquid-tight envelope, the material of fixed bed relative to internal Loose tube 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, it is characterised in that institute Cable core is stated to live by centrally located reinforcer 3, around seven stranded Loose tubes 1 of reinforcer, by all Loose tube integral coatings Fixed bed 4 constitute, the Loose tube of arbitrary neighborhood is spacing maximum two-by-two mutually between nontangential and adjacent Loose tube For 0.2mm, fixed bed is extend into the internal clearance of Loose tube formation, all has eight optical fibers 2 in every Loose tube；It is fixed Layer is liquid-tight envelope relative to internal Loose tube, and the material of fixed bed is polypropylene or polyethylene or poly terephthalic acid fourth two Alcohol ester.

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 of sleeve pipe formation.

Embodiment 3

See Fig. 3, layer-stranding cable, substantially with embodiment 2, difference is that wherein two Loose tubes are filled 7 institutes of rope Instead of；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, around at least one stranded Loose tube of reinforcer, at least one Rope, the fixed bed for living all Loose tubes and gasket for packing integral coating is filled to constitute, when having many 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 many 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 mutual nontangential and adjacent Loose tube and gasket for packing is 0.2mm, and fixed bed extend into loose set In pipe, the internal clearance of gasket for packing formation, all there is at least one 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 internal Loose tube and gasket for packing, 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, around at least one stranded pine set of reinforcer Pipe, at least one gasket for packing, the fixed bed for living all Loose tubes and gasket for packing integral coating are constituted, when having many Loose tubes, The Loose tube of arbitrary neighborhood is tangent, when having many gasket for packings, and the gasket for packing of arbitrary neighborhood is tangent, adjacent Loose tube It is tangent with gasket for packing, all there is at least one 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 internal Loose tube and gasket for packing, 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, positioned at the first protective layer Outside the second protective layer 9 and extrusion molding be coated on restrictive coating 6 outside the second protective layer, it is characterised in that the cable core by positioned at The reinforcer 3 in center, around five stranded Loose tubes 1 of reinforcer, two gasket for packings 7, by all Loose tubes and all fillings The fixed bed 4 lived of rope integral coating is constituted, the Loose tube of arbitrary neighborhood be two-by-two mutually nontangential, arbitrary neighborhood Loose tube with Gasket for packing is that mutually nontangential, arbitrary neighborhood gasket for packing is two-by-two mutually between nontangential and adjacent Loose tube two-by-two Spacing maximum is that the spacing maximum between 0.2mm, adjacent gasket for packing is between 0.2mm, adjacent Loose tube and gasket for packing Spacing maximum is 0.2mm, and fixed bed extend into the internal clearance of Loose tube and gasket for packing formation, all had in every Loose tube Eight optical fibers 2；Fixed bed is liquid-tight envelope relative to internal Loose tube and gasket for packing, and the material of fixed bed is polypropylene 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.

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 includes cable core, the first protective layer outside cable core, position The restrictive coating outside the second protective layer is coated in the second protective layer and extrusion molding outside the first protective layer, it is characterised in that described Cable core is by centrally located reinforcer, around at least one stranded Loose tube of reinforcer, at least one gasket for packing, by all pines Fixed bed that sleeve pipe and all gasket for packing integral coatings are lived is constituted, when having many Loose tubes, and the Loose tube of arbitrary neighborhood is not mutually not Spacing maximum between tangent and adjacent Loose tube is 0.2mm, when having many gasket for packings, the gasket for packing of arbitrary neighborhood It is that spacing maximum mutually between nontangential and adjacent gasket for packing is 0.2mm, adjacent Loose tube and gasket for packing are not mutually not It is tangent, and spacing maximum between adjacent Loose tube and gasket for packing is 0.2mm, fixed bed extend into Loose tube, filling Restrict in the internal clearance formed, all there is at least one 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 internal Loose tube and gasket for packing, and the material of fixed bed is polypropylene 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 at least one stranded Loose tube of reinforcer, at least one gasket for packing, The fixed bed that all Loose tubes and all gasket for packing integral coatings are lived is constituted, when having many Loose tubes, the pine set of arbitrary neighborhood Pipe is tangent, when having many gasket for packings, and the gasket for packing of arbitrary neighborhood is that tangent, adjacent Loose tube is tangent with gasket for packing , all there is at least one 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 internal Loose tube and gasket for packing, 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 many gasket for packings, can also It is only one 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, can also set a variety of protective layers, such as outside restrictive coating Steel belt layer is first set, then external sheath layer is set, optical fiber therein so can be more effectively protected, makes the performances such as mechanical resistance to compression big Big enhancing；Nylon layer can also be set outside restrictive coating, the purpose of ant proof can be so reached；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 stranded set, be arranged in parallel the stranded 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 the length of stranded generation, 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 stranded 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 the length of stranded generation, 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

See Fig. 5, and referring to figs. 1 to Fig. 4, the manufacture method of the layer-stranding cable described in embodiment 1, it is characterised in that it Include following steps：

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 The length of optical fiber in finished product Loose tube, finished product Loose tube is 1.002~1.008 times of finished product Loose tube length；Repeatedly Three times, form three finished product Loose tubes 2；

3rd step：Cable core forming step：(1) steel wire or fiberglass-reinforced plastic lever is taken to be placed on cable-former as reinforcer 3 Reinforcer discharge device on and pull out through the first stranded mould 41 the first medium pore 410, then pass through the second stranded mould Tool 42 the first centre bore, after the 3rd stranded mould 43 the first interstitial hole, be then passed through extrusion head 51 inside mistake cable core Hole 52；(2) finished product Loose tube 2 that is forming second step and being wound on the first disk tool 11 is by the first scroll wheel groups 31 and passes through The first edge hole 411 of first stranded mould 41, the first edge hole 421 for being then passed through the second stranded mould 42, it is subsequently passed through The first holes around 431 and then sky of three stranded moulds 43 cross crossing cable core hole and ensuring finished product Loose tube inside extrusion head 51 Outside reinforcer；Finished product Loose tube 2 that is that second step is formed and being wound on the second disk tool 12 passes through the second scroll wheel groups 32 and through the first stranded mould 41 first edge hole 411, be then passed through the first edge hole 421 of the second stranded mould 42, connect The first holes around 431 and then sky through the 3rd stranded mould 43 cross crossing cable core hole and ensuring into inside extrusion head 51 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 is by the 3rd Scroll wheel groups 33 simultaneously pass through the first edge hole 411 of the first stranded mould 41, are then passed through the first edge of the second stranded mould 42 Hole 421, the cable core hole excessively being subsequently passed through inside the first holes around 431 of the 3rd stranded mould 43 and then empty extrusion head 51 excessively And ensure that finished product Loose tube is located at outside reinforcer；Make adjacent Loose tube tangent；（3）Drew extrusion head reinforcer and Loose tube, and the first stranded mould, the second stranded mould, the 3rd stranded mould are remained stationary as, by the polypropylene of melting or poly- second In the injecting hole 53 of alkene 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 or polyethylene or polybutylene terephthalate (PBT) of melting be close to outside finished product Loose tube to form fixation Layer；（4）Polypropylene or the bar of polyethylene formation is taken to be filled in outside fixed bed and form packed layer；And then form cable core；Fill out The material of the material and fixed bed that fill layer is differed；

Wherein, the first disk tool 11 can be rotated relative to the first fixed pipe discharging mechanism 21, and the first scroll wheel groups 31 are located at first The top of pipe discharging mechanism 21；Second disk tool 12 can be rotated relative to the second fixed pipe discharging mechanism 22, the second scroll wheel groups 32 Positioned at the top of the second pipe discharging mechanism 22；3rd disk tool 13 can be rotated relative to the 3rd fixed pipe discharging mechanism 23, the 3rd rolling Driving wheel group 33 is located at the top of the 3rd pipe discharging mechanism 23；Along the release direction of Loose tube：3rd pipe discharging mechanism puts pipe positioned at second The front of mechanism, the second pipe discharging mechanism are located at the front of the first pipe discharging mechanism, the first pipe discharging mechanism and are located at the first stranded mould Rear, the second stranded mould are located at the front of the first stranded mould, the 3rd stranded mould and are located at the front of the second stranded mould, squeeze Molding machine head is located in front of the 3rd stranded mould；First medium pore, first edge hole be through the first stranded mould and in first Central aperture is located at the center of the first stranded mould, and 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 communicated with, and the distance of the first medium pore central axis and first edge hole central axis is between first Away from；First centre bore, the first edge hole are through the second stranded mould and the first centre bore is located in the second stranded mould Centre, 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 to be not communicated with , the distance of the first centre bore central axis and the first edge hole central axis is the second spacing；First interstitial hole, around first Hole is through the second stranded mould and the first interstitial hole is located at the center of the second stranded mould, the first holes around have it is multiple and It is distributed in outside the first interstitial hole and the first holes around is not communicated with the first interstitial hole, the first edge hole has multiple and divided Cloth is outside the first centre bore and the first edge hole is not communicated with the first centre bore, the first interstitial hole central axis and first The distance of holes around central axis is the 3rd spacing；The spacing of first the second spacing of spacing ＞＞ the 3rd；The injecting hole of extrusion head It is connected to cable core hole excessively logical；The distance between first stranded mould and the second stranded mould are 1000~2000mm, second The distance between stranded mould and the 3rd stranded mould are 500~1000mm, between the first stranded mould and the second stranded mould Distance be 2~5 times of the distance between the second stranded mould and the 3rd stranded mould；

Certainly, in the above method, Loose tube is not limited to three, can also be many；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：

3rd step：Cable core forming step：(1) steel wire or fiberglass-reinforced plastic lever is taken to be placed on cable-former as reinforcer 3 Reinforcer discharge device on and pull out through the first stranded mould 41 the first medium pore 410, then pass through the second stranded mould Tool 42 the first centre bore, after the 3rd stranded mould 43 the first interstitial hole, be then passed through extrusion head 51 inside mistake cable core Hole 52；(2) finished product Loose tube 2 that is forming second step and being wound on the first disk tool 11 is by the first scroll wheel groups 31 and passes through The first edge hole 411 of first stranded mould 41, the first edge hole 421 for being then passed through the second stranded mould 42, it is subsequently passed through The first holes around 431 and then sky of three stranded moulds 43 cross crossing cable core hole and ensuring finished product Loose tube inside extrusion head 51 Outside reinforcer；Finished product Loose tube 2 that is that second step is formed and being wound on the second disk tool 12 passes through the second scroll wheel groups 32 and through the first stranded mould 41 first edge hole 411, be then passed through the first edge hole 421 of the second stranded mould 42, connect The first holes around 431 and then sky through the 3rd stranded mould 43 cross crossing cable core hole and ensuring into inside extrusion head 51 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 is by the 3rd Scroll wheel groups 33 simultaneously pass through the first edge hole 411 of the first stranded mould 41, are then passed through the first edge of the second stranded mould 42 Hole 421, the cable core hole excessively being subsequently passed through inside the first holes around 431 of the 3rd stranded mould 43 and then empty extrusion head 51 excessively And ensure that finished product Loose tube is located at outside reinforcer；Make that there is no more than 0.2mm gap between adjacent Loose tube；（3）Lead The reinforcer and Loose tube of extrusion head are introduced through, and the first stranded mould, the second stranded mould, the 3rd stranded mould is kept not It is dynamic, in the injecting hole 53 that the polypropylene or polyethylene or polybutylene terephthalate (PBT) of melting are injected to extrusion head, in mistake The right-hand member exit in cable core hole makes the polypropylene or polyethylene or polybutylene terephthalate (PBT) of melting tight using air extractor It is attached to outside finished product Loose tube and enters the fixed bed that integration is formed in the internal clearance that Loose tube is formed；（4）Take polypropylene or poly- The bar of ethene formation, which is filled in outside fixed bed, forms packed layer；And then form cable core；The material and fixed bed of packed layer Material differ；

The preparation method of layer-stranding cable described in embodiment 2, 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 A1a types or A1b types or A1c types or A1d types or OM1 types or OM2 types or the naked optical fiber of 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%；It is repeated multiple times, form many Optical fiber, the dyed layer of any two different optical fibers has 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 The length of optical fiber in finished product Loose tube, finished product Loose tube is 1.002~1.008 times of finished product Loose tube length, finished product Optical fiber in Loose tube at least one；It is repeated multiple times, form many finished product Loose tubes；

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 through the first stranded mould 41 the first medium pore 410, then pass through the second stranded mould 42 the first centre bore, after the 3rd stranded mould 43 the first interstitial hole, be then passed through crossing cable core hole inside extrusion head 51 52；(2) finished product Loose tube that is forming second step and being wound on disk tool is by scroll wheel groups and passes through the first stranded mould 41 First edge hole 411, be then passed through the first edge hole 421 of the second stranded mould 42, be subsequently passed through the 3rd stranded mould 43 First holes around 431 and then sky cross crossing cable core hole and ensuring that finished product Loose tube is located at outside reinforcer inside extrusion head 51； Make adjacent Loose tube tangent；（3）The reinforcer and Loose tube of extrusion head were drawn, and twists the first stranded mould, second Matched moulds tool, the 3rd stranded mould are remained stationary as, and the polypropylene or polyethylene or polybutylene terephthalate (PBT) of melting are injected and squeezed In the injecting hole 53 of molding machine head, cross the right-hand member exit in cable core hole using air extractor make melting polypropylene or polyethylene or Polybutylene terephthalate (PBT) is close to outside finished product Loose tube and forms fixed bed；And then form cable core；

Wherein, disk tool can be rotated relative to fixed pipe discharging mechanism, and scroll wheel groups are located at the top of pipe discharging mechanism；Along Loose tube Release direction：Pipe discharging mechanism be located at the rear of the first stranded mould, the second stranded mould be located at the first stranded mould front, 3rd stranded mould is located at the front of the second stranded mould, extrusion head and is located in front of the 3rd stranded mould；First medium pore, One edge hole is through the first stranded mould and the first medium pore is located at the center of the first stranded mould, and first edge hole has It is multiple and be distributed in outside the first medium pore and first edge hole and the first medium pore are not communicated with, the first medium pore central shaft Line is the first spacing with the distance of first edge hole central axis；First centre bore, the first edge hole are through the second stranded mould Tool and the first centre bore be located at the second stranded mould center, the first edge hole have it is multiple and be distributed in the first centre bore it Outer and the first edge hole is not communicated with the first centre bore, the first centre bore central axis and the first edge hole central axis Distance is the second spacing；It is that first interstitial hole, the first holes around are through the second stranded mould and the first interstitial hole is located at second The center of stranded mould, the first holes around has multiple and is distributed in outside the first interstitial hole and in the middle of the first holes around and first Hole is not communicated with, and 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 It is not communicated with, the distance of the first interstitial hole central axis and the first holes around central axis is the 3rd spacing；First spacing ＞ The spacing of second spacing ＞ the 3rd；The injecting hole of extrusion head is connected to logical with cable core hole excessively；First stranded mould and second is twisted The distance between matched moulds tool is 1000~2000mm, the distance between the second stranded mould and the 3rd stranded mould for 500~ 1000mm, the distance between the first stranded mould and the second stranded mould are between the second stranded mould and the 3rd stranded mould 2~5 times of distance；

The preparation method of another layer-stranding cable described in embodiment 2, it is characterised in that it includes following step Suddenly：

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 through the first stranded mould 41 the first medium pore 410, then pass through the second stranded mould 42 the first centre bore, after the 3rd stranded mould 43 the first interstitial hole, be then passed through crossing cable core hole inside extrusion head 51 52；(2) finished product Loose tube that is forming second step and being wound on disk tool is by scroll wheel groups and passes through the first stranded mould 41 First edge hole 411, be then passed through the first edge hole 421 of the second stranded mould 42, be subsequently passed through the 3rd stranded mould 43 First holes around 431 and then sky cross crossing cable core hole and ensuring that finished product Loose tube is located at outside reinforcer inside extrusion head 51； Make that there is no more than 0.2mm gap between adjacent Loose tube；（3）The reinforcer and Loose tube of extrusion head were drawn, and Remain stationary as the first stranded mould, the second stranded mould, the 3rd stranded mould, by the polypropylene or polyethylene of melting or poly- to benzene In the injecting hole 53 of dioctyl phthalate butanediol ester injection extrusion head, make to melt using air extractor in the right-hand member exit for crossing cable core hole It is outer and into Loose tube formation that the polypropylene or polyethylene or polybutylene terephthalate (PBT) melted is close to finished product Loose tube The fixed bed of integration is formed in internal clearance；And then form cable core；

The preparation method of layer-stranding cable described in embodiment 3, it is characterised in that it includes following steps：

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 through the first stranded mould 41 the first medium pore 410, then pass through the second stranded mould 42 the first centre bore, after the 3rd stranded mould 43 the first interstitial hole, be then passed through crossing cable core hole inside extrusion head 51 52；(2) finished product Loose tube that is forming second step and being wound on disk tool is by scroll wheel groups and passes through the first stranded mould 41 First edge hole 411, be then passed through the first edge hole 421 of the second stranded mould 42, be subsequently passed through the 3rd stranded mould 43 First holes around 431 and then sky cross crossing cable core hole and ensuring that finished product Loose tube is located at outside reinforcer inside extrusion head 51； Make adjacent Loose tube tangent when being located at adjacent position with many Loose tubes and Loose tube；（3）Take polypropylene or polyethylene material Expect the gasket for packing made, through the first edge hole 411 of the first stranded mould 41, be then passed through the first side of the second stranded mould 42 Along hole 421, it is subsequently passed through crossing cable core inside the first holes around 431 of the 3rd stranded mould 43 and then sky extrusion head 51 excessively Hole simultaneously ensures that finished product gasket for packing is located at outside reinforcer；There are many gasket for packings and gasket for packing to make adjacent fill out when being located at adjacent position Fill rope it is tangent, gasket for packing and adjacent Loose tube are tangent；（4）The reinforcer, gasket for packing and Loose tube of extrusion head were drawn, and Remain stationary as the first stranded mould, the second stranded mould, the 3rd stranded mould, by the polypropylene or polyethylene of melting or poly- to benzene In the injecting hole 53 of dioctyl phthalate butanediol ester injection extrusion head, make to melt using air extractor in the right-hand member exit for crossing cable core hole The polypropylene or polyethylene or polybutylene terephthalate (PBT) melted is close to outside finished product Loose tube and gasket for packing and forms fixed bed； And then form cable core；The quantity of Loose tube and the quantity sum of gasket for packing are not less than 3；

The preparation method of another layer-stranding cable described in embodiment 3, it is characterised in that it includes following step Suddenly：

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 through the first stranded mould 41 the first medium pore 410, then pass through the second stranded mould 42 the first centre bore, after the 3rd stranded mould 43 the first interstitial hole, be then passed through crossing cable core hole inside extrusion head 51 52；(2) finished product Loose tube that is forming second step and being wound on disk tool is by scroll wheel groups and passes through the first stranded mould 41 First edge hole 411, be then passed through the first edge hole 421 of the second stranded mould 42, be subsequently passed through the 3rd stranded mould 43 First holes around 431 and then sky cross crossing cable core hole and ensuring that finished product Loose tube is located at outside reinforcer inside extrusion head 51； When being located at adjacent position with many Loose tubes and Loose tube, between the nontangential and adjacent Loose tube of adjacent Loose tube between Gap is not more than 0.2mm；（3）The gasket for packing for taking polypropylene or polythene material to make, through the first side of the first stranded mould 41 Marginal pore 411, the first edge hole 421 for being then passed through the second stranded mould 42, it is subsequently passed through around the first of the 3rd stranded mould 43 Hole 431 and then sky cross crossing cable core hole and ensuring that finished product gasket for packing is located at outside reinforcer inside extrusion head 51；There are many to fill out Fill rope and gasket for packing be located at adjacent position when, adjacent gasket for packing is nontangential, and the gap between adjacent gasket for packing is not more than 0.2mm, the gap between gasket for packing and adjacent Loose tube is not more than 0.2mm；（4）Drew the reinforcer of extrusion head, filled out Rope and Loose tube are filled, and remains stationary as the first stranded mould, the second stranded mould, the 3rd stranded mould, by the polypropylene of melting Or in the injecting hole 53 of polyethylene or polybutylene terephthalate (PBT) injection extrusion head, crossing the right-hand member exit in cable core hole The polypropylene or polyethylene or polybutylene terephthalate (PBT) of melting is set to be close to finished product Loose tube and fill out using air extractor Fill outside rope and enter the fixed bed that integration is formed in the internal clearance that Loose tube is formed；And then form cable core；The quantity of Loose tube It is not less than 3 with the quantity sum of gasket for packing；

The preparation method of layer-stranding cable described in embodiment 4, it is characterised in that it includes following steps：

4th step：The step of forming the first protective layer：Take waterstop to be longitudinally coated on outside the cable core of the 3rd step formation and form the One protective layer, the overlapping widths of waterstop lap-joint are 2~4mm；

5th step：The step of forming the second protective layer：Steel band or aluminium strip is taken longitudinally to be coated on the first protective layer of the 4th step formation Outside form the second protective layer, when the first protective layer diameter is not more than 8.5mm, the overlapping widths of steel band or aluminium strip lap-joint are not Less than the 20% of the first protective layer diameter；When the first protective layer is with diameter greater than 8.5mm, the overlapping width of steel band or aluminium strip lap-joint Degree is not less than 5mm；

6th step：Restrictive coating forming step：By low-smoke non-halogen flame-retardant polyethylene or LLDPE or low density polyethylene Alkene or medium density polyethylene or high density polyethylene (HDPE) are coated on the second protective layer of the 5th step formation by sheath extruding machine extrusion molding Outside, restrictive coating is formed, the making of layer-stranding cable is completed.

The preparation method of another layer-stranding cable described in embodiment 4, it is characterised in that it includes following step Suddenly：

It is of the invention compared with traditional use yarn class wrapping, with the faster advantage of speed of production, 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 1000 optical cables is equally done, it is of the invention compared with traditional layer-stranding cable, by YD/T901- There is not infiltration phenomenon in method test as defined in 2009, 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 have occurred as soon as temperature change additional attenuation value for 0.3dB/km 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 method for the present invention, the distance between the first stranded mould and the second stranded mould are the second stranded mould and 2~5 times of the distance between three stranded moulds；It ensure that in layer-stranding cable Loose tube and presumable gasket for packing in cable core Stability, will not deform in fixed layer formation process, be formed after finished cable, can also keep excellent mechanical 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 Using the fixed bed of different colours, to reach the purpose of differentiation.

Or, in the manufacture method of layer-stranding cable or layer-stranding cable described above, the restrictive coating is by following heavy Measure the raw material composition of part：Polyethylene：65 parts, polypropylene：6 parts, antioxidant 1010：2 parts, aluminium hydroxide：10 parts, HK types resist it is quiet Electric agent：1 part, ethyl acetate：3 parts, carbon black：2 parts, titanium dioxide：1 part, sodium rice silica：8 parts, Tissuemat E：2 parts.It is above-mentioned to match somebody with somebody Side has excellent processing characteristics, and in 100m/min process velocities, jacket surface is still smooth, rounding, pin-free；Through surveying Examination, material oxygen index (OI) >=41 are made after the thick sheaths of 1.6mm in the interval that space potential is 16~50KV, long-term by 700 days Continuously use, the vestige of galvano-cautery is had no on sheath.

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 Performance stabilization 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. layer-stranding cable, it includes cable core and extrusion molding is coated on restrictive coating outside cable core, it is characterised in that the cable core The fixed bed lived by centrally located reinforcer, around three stranded Loose tubes of reinforcer, by all Loose tube integral coatings, Packed layer outside fixed bed is constituted, and any two adjacent Loose tubes are mutually circumscribed, are all had in every Loose tube Eight optical fibers；Fixed bed is liquid-tight envelope relative to internal Loose tube, and the material of fixed bed is polypropylene or polyethylene Or polybutylene terephthalate (PBT)；The material of the restrictive coating is LLDPE or the raw material by following parts by weight Constitute：Polyethylene：65 parts, polypropylene：6 parts, antioxidant 1010：2 parts, aluminium hydroxide：10 parts, HK type antistatic additive：1 part, Ethyl acetate：3 parts, carbon black：2 parts, titanium dioxide：1 part, sodium rice silica：8 parts, Tissuemat E：2 parts.

2. the manufacture method of layer-stranding cable, it is characterised in that it includes following steps：

4th step：Restrictive coating forming step：Outside the cable core that jacket layer material extruding machine extrusion molding is coated on to the formation of the 3rd step, shape Into restrictive coating, the making of layer-stranding cable is completed；The material of the restrictive coating is LLDPE or by following heavy Measure the raw material composition of part：Polyethylene：65 parts, polypropylene：6 parts, antioxidant 1010：2 parts, aluminium hydroxide：10 parts, HK types resist it is quiet Electric agent：1 part, ethyl acetate：3 parts, carbon black：2 parts, titanium dioxide：1 part, sodium rice silica：8 parts, Tissuemat E：2 parts.

3. the preparation method of layer-stranding cable, it is characterised in that it includes following steps：

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 through the first stranded mould the first medium pore, then pass through the first of the second stranded mould Centre bore, after the 3rd stranded mould the first interstitial hole, be then passed through crossing cable core hole inside extrusion head；(2) by second step Formed and be wound on the first disk tool on finished product Loose tube by the first scroll wheel groups and through the first stranded mould the first side Marginal pore, the first edge hole for being then passed through the second stranded mould, it is subsequently passed through the first holes around of the 3rd stranded mould, then passes through 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 Disk tool on finished product Loose tube by the second scroll wheel groups and through the first stranded mould first edge hole, be then passed through the second strand First edge hole of matched moulds tool, it is subsequently passed through the first holes around of the 3rd stranded mould, then passes through mistake 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 passes through the 3rd scroll wheel groups and passes through the first edge hole of the first stranded mould, is then passed through the first edge of the second stranded mould Hole, the first holes around for being subsequently passed through the 3rd stranded mould, then pass through crossing cable core hole and ensuring finished product inside extrusion head Loose tube is located at outside reinforcer；Make that there is no more than 0.2mm gap between adjacent Loose tube；（3）Drew extruding machine The reinforcer and Loose tube of head, and the first stranded mould, the second stranded mould, the 3rd stranded mould are remained stationary as, by melting In the injecting hole of polypropylene or polyethylene or polybutylene terephthalate (PBT) injection extrusion head, go out in the right-hand member for crossing cable core hole The polypropylene or polyethylene or polybutylene terephthalate (PBT) of melting is set to be close to finished product Loose tube using air extractor at mouthful The fixed bed of integration is formed in internal clearance that is outer and entering Loose tube formation；（4）Take the strip of polypropylene or polyethylene formation Thing, 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 are to differ 's；