CN102565973A - Method for manufacturing liner for optical cable - Google Patents
Method for manufacturing liner for optical cable Download PDFInfo
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- CN102565973A CN102565973A CN2011104413989A CN201110441398A CN102565973A CN 102565973 A CN102565973 A CN 102565973A CN 2011104413989 A CN2011104413989 A CN 2011104413989A CN 201110441398 A CN201110441398 A CN 201110441398A CN 102565973 A CN102565973 A CN 102565973A
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- steel wire
- liner
- optical cable
- correction process
- rectifier
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Abstract
The present invention provides a method for manufacturing a liner for an optical cable, wherein a hard steel wire undergone residual deformation, particularly rotation deformation caused by winding on a roller is used as a tensile strength body. The manufacturing method can inhibit sudden variation of the pitch or reversal pitch and reversal angle of the spiral groove of the body of the liner. The method for manufacturing the liner for an optical cable comprising: a correction step of removing the rotation deformation of the steel wire and unbending the steel wire, wherein the correction step of the steel wire comprises any one step of a group consisting (1)-(3): (1) inserting the steel wire into a corrector for bending process, performing a heating process to heating the surface temperature to 400-600 DEG C, and then cooling the surface temperature to 60-100 DEG C; (2) heating steel wire to enable the surface temperature to reach 400-600 DEG C, cooling the surface temperature to 60-100 DEG C, and inserting the steel wire into a corrector with a correction angle of 2-10 DEG for ending processing; and (3) inserting the steel wire into a first corrector for bending processing, heating the steel wire to enable the surface temperature to 400-600 DEG C, then cooling the surface temperature to 60-100 DEG C, and inserting the steel wire into a second corrector of 2-10 DEG for bending processing.
Description
Technical field
The present invention relates to the manufacturing approach of optical cable, particularly relate to the manufacturing approach that is included in the manufacturing process steel wire correction process that steel wire that the tensile strength body as liner is used corrects with liner.
Background technology
In the past, the parts that use when making the set of many of optical fiber form optical cable, the liner that the known fiber optic load is used.This liner is formed by the liner main body, and this liner main body has the tensile strength body in central configuration, its periphery be provided be used for taking in multifiber along any direction of S direction or Z direction or the spiral groove of SZ direction counter-rotating.
As the manufacturing approach of optical cable with liner, the periphery that normally is formed in the tensile strength body through melt extruding of thermoplastic resin is formed for taking in the spiral groove of the unidirectional or SZ direction counter-rotating in the edge of optical fiber, and cooling curing obtains afterwards.Usually use hard wire in the tensile strength body, use the steel wire of the state of random winding (being not neat coiling) on cylinder.
When making liner, the tensile strength body is that the use draw-gear is pulled out under the state that carries on the roller shelves, and use dance roller to apply to supply under the state of certain tension force preparatory lining with extruder or the lining of liner main body with extruder in.
In advance lining with extruder be used for make optical fiber take in the liner of the many square groove shapes of radical the time in order to make groove shapes good and utilize thermoplastic resin to implement the device of the preparatory lining of predetermined outside diameter with the tensile strength line that is covered in advance.
According to the shape of liner, lining also can use a plurality of extruders to carry out extrusion molding interimly in advance, carries out the lining of liner main body then and the formation liner.
In addition, in the liner that little at external diameter, few calculation is used, also can be covered in advance and go up at tensile strength body (steel wire) and directly to implement the lining of liner main body.
The lining of liner main body is used rotating mould to carry out the tensile strength body and is provided with along the lining of the thermoplastic resin of unidirectional or the spiral groove that the SZ direction is reversed with in the extruder, draws after the cooling, is wound up on the product cylinder through shape inspection apparatus.
In optical cable important can enumerating out in the desired quality with liner:
(i) it is good to take in the dimensional accuracy of spiral groove of optical fiber;
The flatness of the spiral groove inner surface that (ii) optical fiber contacted is good;
(iii) optical cable is accurate and do not have a deviation with the angle (reverse angle) of the cycle (pitch) of the spiral groove of liner spiral groove rotation 1 time under unidirectional situation about reversing, the cycle of spiral groove counter-rotating under the situation that SZ reverses (antitrochanter apart from) and this counter-rotating; And
(iv) optical cable is with there not being bending etc. on the liner.
Therefore, in shape inspection operation, be following structures: on whole length, measure optical cable with external diameter, recess width and the degree of depth, pitch or the antitrochanter of liner apart from and reverse angle etc., if generation is unusually then give the alarm immediately.
In recent years, in order to enhance productivity, the speed of constantly carrying out taking in liner at optical cable the operation of optical fiber improves, and in order stably to take in optical fiber at optical cable in liner, requires pitch or the antitrochanter distance of liner main body and reverse angle accurate.Generally speaking according to optical cable with the pitch of liner or antitrochanter apart from and the mode that is controlled in certain specification limit of reverse angle design; But under the front and back at continuous numerical value poor (deviation) big situation; Need proofread and correct this side-play amount and control speed of production, therefore can't expect the further raising of speed of production.
In addition, when having the change of paroxysmal numerical value, the poorest situation is that optical fiber flies out from taking in groove, even might failover and stop production.
Can know optical cable with the pitch of liner or antitrochanter apart from and the stability of reverse angle be the properties influence that is constituted the tensile strength body of liner main body, the influence of the residual deformation that particularly receives to produce in the manufacturing process of medium hard steel silk is very big.
The hard wire that uses in the tensile strength body (following only be called sometimes " steel wire ") is to be added in the fiber feeder of the supersteel fragment that possesses target aperture through the mother metal about the about 5mm of the diameter that will be wound into coiled type and band together, and carries out at normal temperatures that Wire Drawing makes.Under the situation of wire drawing once to target external diameter, also middle sometimes wire drawing is to middle external diameter.In this manufacturing process; On the steel wire after the mother metal wire drawing; For example because the load that mother metal is applied when the rotation of the mother metal when seeing off or wire drawing, can residual rotational deformation and flexural deformation, also can be under the situation of not eliminating these after being wound up on the cylinder and be fixed up.In addition, when being wound up into the steel wire after the wire drawing on the cylinder, on one side the coiling Width lead of an edge cylinder is reeled.But, because the line footpath is thin, being difficult to fitly reel, the result becomes so-called random winding.
Carry out such lead and when reeling; Lead is through moving more than the steel wire diameter along the cylinder Width during cylinder rotation 1 time; With the dislocation that reduces range upon range of steel wire is purpose; Through being used for the power that this lead comes and goes the direction that moves, steel wire is wound up on the cylinder under the state of rotation along its length.
In addition; Through the crooked flaw corresponding, perhaps owing to the slight curves and the rolling of steel wire on random direction that produce in the steel wire laminated of having reeled with the coiling trunk diameter of this cylinder; Produce the rotational deformation of long axis direction; They are fixed under the state that is wound up on the cylinder, and distortion is fixed up thus.
Use liner if use steel wire to make optical cable with such distortion; It is unusual then when having the liner main body coating forming of the unidirectional spiral groove that reverses, can to produce pitch; It is unusual or reverse angle is unusual when carrying out the coating forming of the spiral groove that SZ reverses, can to produce pitch, is difficult to take in optical fiber at resulting optical cable in liner thereby become.
In order reducing, to have investigated several method, but had following problem as the residual deformation of optical cable with the hard wire of the tensile strength body use of liner.
In patent documentation 1, proposed,,, used through the hard wire that turns blue and handle as one of thermal treatment as the tensile strength line of high endurance about high endurance submarine optical fiber cable.The processing of turning blue is also referred to as process annealing and handles, and is to make surface oxidation in order to give rust-preventing characteristic to steel wire, but simultaneously owing to the heating of this moment and the cooling of carrying out at once afterwards, the intensity of steel wire after the processing of turning blue increases.But on the other hand known, toughness reduces, to the reliability and the processability reduction of crooked and torsional deflection.Specific strength is higher mutually with nonheat-treated steel wire (cast steel silk) for blue annealed wire, is difficult to receive the influence of the steel wire distortion that is caused by random winding, but opposite, and blue annealed wire more is difficult to eliminate the distortion that when cylinder is reeled, is fixed through back processing.
Proposed that in patent documentation 2 the tension intensity line is carried out heat treated and made the method for optical cable with liner.Explained according to this method, through before the extruder crosshead is inserted, the tensile strength body of seeing off from feed roller being heat-treated the coiling flaw in the time of to eliminate on being wound up into feed roller.It is through the hard wire of seeing off from feed roller is carried out the elimination that heat treated is sought crooked flaw under high-tension, but also only wants through wire-shaped being become the method that linearity is eliminated distortion.Therefore, though effective for linear recovery, also insufficient for the elimination of rotational deformation.In addition, along with the diameter increase of tensile strength body, necessary rising heating-up temperature becomes the high-temperature heat treatment under the tensioning in order to obtain equal craspedodrome property, and the toughness of steel wire reduces, thereby causes processability to reduce.
On the other hand, in patent documentation 3, proposed to make the method for high-tensile steel wires through the longitudinal crack that produces in the twisting test that suppresses high-tensile steel wires.In this method, also proposed to use rectifier to eliminate the method for the distortion of tensile strength body.But; This method is the manufacturing approach of high-tensile steel wires; Wherein in the manufacturing process of steel wire itself, after the wire-shaped that will comprise the regulation chemical constitution through bakingout process and wire-drawing process becomes the wire drawing steel wire of prescribed strength, through the skin-pass processing of turning blue.In addition, also proposed after carrying out skin-pass, with 10～30 the degree angle of bend it is passed through between a plurality of rollers, the processing of under the temperature more than 460 ℃, turning blue then.But, being wound up under the situation that the steel wire that carries out keeping on the cylinder uses as the tensile strength line, also have resilience under the normal temperature, for eliminating as optical cable fully in operation with the tensile strength body of liner or the distortion of liner after making do not enlighten.
The prior art document
Patent documentation
Patent documentation 1: japanese kokai publication sho 61-75312 communique
Patent documentation 2: TOHKEMY 2008-197486 communique
Patent documentation 3: japanese kokai publication hei 6-158225 communique
Summary of the invention
Invent problem to be solved
The present invention carries out in view of such problem points in the past; Its purpose is; The residual steel wire distortion because cylinder is reeled through producing in the manufacturing process that will eliminate the medium hard steel silk, particularly the hard wire of rotational deformation uses as the tensile strength body; Suppress because the influence of the distortion of tensile strength body makes pitch or antitrochanter distance and the reverse angle of the spiral groove of liner main body that paroxysmal change take place; The set of optical fiber smoothly and easily improves the throughput rate of optical cable when making the manufacturing of light (fibre) cable thus.
Be used to solve the means of problem
To achieve these goals, the present invention provides following [1]～[6].
[1] a kind of optical cable is with the manufacturing approach of liner, and said optical cable is formed with optical fiber heart line with liner and takes in the helical groove of usefulness around the tensile strength line that is made up of steel wire, and said manufacturing approach is characterised in that it comprises following operation:
(A) will be wound on operation that the steel wire on the feed roller sees off,
(B) be used for this steel wire rotational deformation the steel wire correction process of removing and stretching and
(C) liner main body lining operation,
And said steel wire correction process (B) is made up of wantonly 1 operation in following (1)～(3):
(1) with the steel wire seen off insert carry out bending process in the rectifier that possesses rotatable a plurality of rollers after, with steel wire heating handle to surface temperature be 400～600 ℃, then the surface temperature of steel wire is cooled to 60～100 ℃ steel wire correction process,
(2) with the steel wire heating of seeing off handle be 400～600 ℃ to surface temperature after, the surface temperature of steel wire is cooled to 60～100 ℃, insert the RA that possesses rotatable a plurality of rollers and be the steel wire correction process that carries out bending process in 2～10 ° the rectifier,
(3) with the steel wire seen off insert carry out bending process in first rectifier that possesses rotatable a plurality of rollers after; With steel wire heating handle to surface temperature be 400～600 ℃; Surface temperature with steel wire is cooled to 60～100 ℃ then, inserts the RA possess rotatable a plurality of rollers and be the steel wire correction process that carries out bending process in 2～10 ° second rectifier;
Liner main body lining operation (C) is by following (i) or (ii) constitute:
(i) be covered in advance through the molten thermoplastic resin in periphery, extrude the molten thermoplastic resin and form the liner main body lining operation of helical groove in its periphery through the steel wire of said steel wire correction process,
(ii) form the liner main body lining operation of helical groove extruding the molten thermoplastic resin through the periphery of the steel wire of said steel wire correction process.
[2] according to the manufacturing approach of above-mentioned [1] described optical cable with liner, wherein, making the RA with respect to steel wire in first rectifier in the steel wire correction process of rectifier or (3) in the steel wire correction process of said (1) is 5 °～20 °.
[3] according to the manufacturing approach of above-mentioned [1] described optical cable with liner, wherein, said (B) steel wire correction process is the correction process of said (3).
[4] according to each described optical cable in above-mentioned [1]～[3] with the manufacturing approach of liner, wherein, steel wire is hard wire or the nonheat-treated hard wire after the thermal treatment.
[5] according to each described optical cable in above-mentioned [1]～[3] with the manufacturing approach of liner; Wherein, The torsional direction that said optical cable use liner is a spiral groove reverses liner apart from the optical cable that alternately reverses with SZ for reverse angle and antitrochanter with regulation; The rate of change that makes resulting this SZ reverse the reverse angle of trying to achieve as follows of liner is below 8%
The reverse angle rate of change (%): in the interval of the 10km of resulting SZ liner, measure reverse angle, be used in the mean value of value maximum in the difference of the reverse angle before and after 1 continuous pitch, represent with % divided by this interval reverse angle.
[6] according to each described optical cable in above-mentioned [1]～[3] with the manufacturing approach of liner; Wherein, Said optical cable is the unidirectional liner that reverses that the torsional direction of spiral groove rotates along wantonly 1 direction of S direction or Z direction with the swivel distance of regulation with liner; Making resulting this unidirectional rate of change of reversing the swivel distance of trying to achieve as follows of liner is below 4%
Swivel is apart from the rate of change (%): in the interval of the resulting unidirectional 10km that reverses liner, measure the swivel distance, be used in before and after 1 continuous pitch swivel apart from difference in maximum value divided by the mean value of this interval swivel distance, represent with %.
The invention effect
According to the optical cable of above-mentioned formation manufacturing approach with liner; Can significantly reduce the inner bending that exists in the steel wire that is wound on the feed roller; Therefore can make the optical cable that has the stable rotation pitch when the unidirectional spiral groove that reverses carried out coating forming have with liner with when the spiral groove that SZ is reversed carries out coating forming stable antitrochanter apart from and the optical cable of reverse angle use liner, thereby the high liner of quality guarantee degree that can stablize and carry out at high speed the set operation of optical fiber heart line when can be provided in the optical cable manufacturing.
Description of drawings
Fig. 1 is the optical cable of expression among (a) the present invention with first embodiment of the manufacturing approach of liner, optical cable among (b) the present invention with the respectively specification figure of an embodiment of second embodiment of the manufacturing approach of liner.
Fig. 2 is the sectional view of an example of the liner that obtains through manufacturing approach of the present invention of expression.
The stereographic map of the sectional view of other examples of Fig. 3 liner that to be (a) obtain through manufacturing approach of the present invention, (b) one-way spiral liner, (c) SZ direction helical spacer.
Fig. 4 is the key diagram of form of (3) of form, (3) steel wire correction process of (2) of form, (2) steel wire correction process of (1) steel wire correction process (1).
Fig. 5 be the correct roller in (a) steel wire rectifier arrangement an example key diagram, (b) steel wire and correct roller contact the heavy key diagram of shape.
Embodiment
Below preferred implementation of the present invention is described.Need to prove that shown in each embodiment shown in the accompanying drawing is an example of representative embodiments of the present invention, scope of the present invention is explained on narrow sense ground thus.
Below, through embodiment and concrete example the optical cable among the present invention is elaborated with the manufacturing approach of liner and the embodiment of manufacturing installation.Fig. 1 representes that optical cable among the present invention is with an embodiment of the manufacturing approach of liner.
Manufacturing approach shown in Figure 1 is to be used for making having the method as the liner 20 of the cross sectional shape shown in the example at Fig. 2, Fig. 3 (a), and liner shown in Figure 2 has: at the tensile strength body 21 of center configuration with in adhesive resin layer 25, the liner main body 24 of the periphery of tensile strength body.On the other hand, the liner shown in Fig. 3 (a) has adhesive resin layer 25, preparatory coating 26 at center configuration tensile strength body 21 in its periphery, has liner main body (coating) 24 at most peripheral.
In advance coating 26 is under the situation of the liner of the rectangular-shaped groove that the many optical cables of the set radical of making optical fiber are used, for make rib collapse minimizing, make groove shapes form rectangle setting.In addition, thus the adhesive resin layer is in order to use steel wire when the bonding liner as optical cable of liner body layer and steel wire is used, to demonstrate protection, loading functional and essential layer of optical fiber under as the situation of tensile strength body fully.
Among the present invention, tensile strength body 21 is made up of in hard wire after the thermal treatment or the nonheat-treated hard wire any.As the hard wire that can use in the manufacturing approach of the present invention, can enumerate out: the steel wire that is equivalent to the SW-B in (JISG3521).As the thermal treatment of steel wire, normally steel wire is given rust-preventing characteristic and made that the process annealing that surface oxidation carries out is handled, the processing of promptly turning blue in order to be used for, through this processing of turning blue, intensity of steel wire also increases.In addition, single gauge of wire can be selected from about 0.7～2.6mm according to the desired tensile strength of liner.
Liner main body 24 forms through the extrusion molding of thermoplastic resin, the spiral groove 23 that it has rib 22 and takes in usefulness to the optical fiber of peripheral openings.
In addition; Spiral groove can be shown in Fig. 3 (b) along the length direction of liner, on the certain orientation of right torsional direction (S direction) or left handed twist direction (Z torsional direction) that rotate, so-called one-way spiral, also can be counter-rotating, the so-called SZ spiral of every reverse angle shown in Fig. 3 (c) at a distance from regulation.In this case, can set reverse angle and pitch thereof arbitrarily.
The thermoplastic resin that thermoplastic resin that the liner main body of using in the manufacturing approach as liner of the present invention is used and preparatory coating are used; Do not have special qualification, can enumerate out: have mechanical properties, cheapness property, lower temperature resistance and from the polythylene resin of the reliability of using real result.
Fig. 1 (a) shows at optical cable of the present invention and is being covered in advance, is extruding the optical cable of first embodiment of liner main body lining operation that the molten thermoplastic resin forms helical groove with the manufacturing process of liner in its periphery through the molten thermoplastic resin through the periphery of the steel wire of steel wire correction process through (i) in the manufacturing approach of liner; Figure (b) shows the liner main body that forms helical groove in the manufacturing approach of liner through (ii) under the periphery through the steel wire of steel wire correction process is not provided with the situation of preparatory coating, extruding the molten thermoplastic resin at optical cable of the present invention and is covered the optical cable of second embodiment of operation with the manufacturing process of liner.
Need to prove; In Fig. 1 (a) and (b) illustration (B) steel wire correction process for the situation of the form of (3), promptly use the situation of 2 rectifier 6a, 6b, but the steel wire correction process also can be as inserting before Fig. 4 (1) institute heat treated that is shown in that situation [form of (1)], (2) among the rectifier 6a insert after heat treated that the first rectifier 6a is inserted in situation [forms of (2)], (3) among the rectifier 6b before heat treated and any one form in [forms of (3)] among the insertion second rectifier 6b after heat treated.
(A) steel wire sees operation off
(B) steel wire correction process
In the manufacturing approach of optical cable of the present invention with liner; The steel wire correction process can adopt any one in the form of above-mentioned (1)～(3); Shown in (1)～(3) of Fig. 4, the aspects such as heat treated before heat treated after the position of the rectifier of each form in operation and/or number, the rectification or the rectification are different.
Rectifier 6a and 6b can use the rectifier with spline structure; Shown in Fig. 5 (a), form following structure: a plurality of correct rollers 601～606 of configuration on roller frame 600; The adjusting of diameter D and the pitch P between correct roller through correct roller can be regulated RA θ °.The diameter D that makes correct roller is 10～40 times of the gauge of wire d that passes through, through using the rectifier that is made up of a plurality of correct rollers steel wire is carried out bending process repeatedly, aligns and the minimizing of rotational deformation (torsional deflection).Correct roller diameter D is during greater than this scope, and the bending process degree is not enough and do not have an effect, and correct roller diameter D is during less than this scope, and the bending process degree is excessive, might make steel wire damaged.In order fixedly to make the position of the steel wire that correct roller passes through, can form the groove of semi-circular shape at the steel wire grounding parts of correct roller, preferably making this groove radius R is 0.5～1.0 times of gauge of wire d.If the number of correct roller is for more than at least 4; The bending process that then hockets, effective to the minimizing of the rotational deformation (torsional deflection) of steel wire, but in order to remove rotational deformation fully; Preferably making correct roller is more than 6, and disposes even number with paired mode.
This alternating bending is preferably carried out from the whole direction of the circumference of steel wire equably; Shown in Fig. 5 (b); If 2 groups of rectifiers that in fact dispose through the circumferencial direction with respect to steel wire are implemented bending machining with meeting at right angles more than both direction (directions X and y direction), then can reduce residual deformation effectively.
About RA θ °, steel wire heating handled the surface temperature of steel wire to be cooled to RA θ ° of second rectifier in the form of rectifier and above-mentioned (3) of after carrying out bending process with first rectifier, correcting with second rectifier again through the heat treated of above-mentioned same steel wire, cooling of form of 60～100 ℃ of above-mentioned (2) of correcting after being 400～600 ℃ to surface temperature be 2～10 °.When being lower than 2 °, the effect of being brought by bending process is few, when surpassing 10 °, produces new flexural deformation sometimes, craspedodrome property variation.
On the other hand, RA θ ° of first rectifier of the rectifier of the form of above-mentioned (1) of before the heat treated of steel wire, correcting or the form of above-mentioned (3) is preferably 5 °～20 °, more preferably 5～15 °, further is preferably 8～12 °.
When being lower than 5 °, do not produce the effect of being brought by bending process, in addition, usually the big more rotational deformation of angle of bend improves more, but when surpassing 20 °, the trafficability characteristic variation of the steel wire in the rectifier not only, and produce new flexural deformation sometimes, craspedodrome property variation.
In the form of (1) of steel wire correction process; Shown in Fig. 4 (1), steel wire 21 after carrying out bending process under the room temperature state, implements make the surface temperature of utilization radiation thermometer 8a detected steel wire to reach 400～600 ℃ heat treated through 7 pairs of steel wires of thermatron through rectifier 6a; Then;, make and utilize the surface temperature of the detected steel wire of radiation thermometer 8b to reach 60～100 ℃ the steel wire cooling through cooling device 9, supply then in preparatory lining operation or liner main body lining operation.
Follow by the bigger rectifier 6a of RA bring significantly the distortion bending process after heat treated; Combine with the drawing stress that dance roller 5 applies of passing through in seeing operation off; The inner distortion that exists of steel wire behind the aligning is relaxed; Make the inner Stability Analysis of Structuresization of steel wire, improve craspedodrome property, and eliminate residual small bending.
For the surface temperature after the heat treated after the bending process that utilizes rectifier 6a to carry out; From the viewpoint that makes the inner Stability Analysis of Structuresization of steel wire, improves craspedodrome property and remove residual deformation; Be preferably 400～600 ℃; Further be preferably 430～580 ℃, be preferably 440～570 ℃ especially.
In the form of (2) of steel wire correction process; Shown in Fig. 4 (2), do not insert in the rectifier, but implement to make the surface temperature of the detected steel wire of utilization radiation thermometer 8a to reach 400～600 ℃ heat treated through 7 pairs of steel wires of thermatron 21; Then import in the cooling device 9 steel wire is cooled off; Make and utilize the surface temperature of the detected steel wire of radiation thermometer 8b to reach 60～100 ℃, carry out bending process with rectifier 6b then, supply in preparatory lining operation or liner main body lining operation.
The bending process that utilizes rectifier after the heat treated changes the inner structure of steel wire through heat treated and gives craspedodrome property; In addition; Through the bending process (bending) that utilizes correct roller, distortion is arranged again, thereby realize the raising of craspedodrome property and the elimination of residual deformation.Among the present invention; Even in the form of above-mentioned (1), also can bring into play the effect of eliminating distortion; But the craspedodrome property raising of the form of (2) of after heat treated, correcting and the effect that residual deformation is removed are bigger, can eliminate slight curves residual in the steel wire, therefore more preferably.
In addition, before heat treated He after the heat treated, all insert in the form of (3) of carrying out bending process in the rectifier, the effect of above-mentioned (1) and (2) synergy can be eliminated distortion most effectively.
Need to prove, in the form of (3), under the situation of correcting through rectifier 6b after the heat treated, as stated, be fit to reach 2 °～10 ° mode and carry out bending with RA.
When being lower than 2 °, do not produce the effect of bringing by bending process, when surpassing 10 °, the craspedodrome property variation of resulting steel wire sometimes.When after heat treated, carrying out the rectification of steel wire of high temperature at once; Correct roller heats unusually and might produce breakage; Therefore, need before rectifier, use cooling device 9 surface temperatures such as bosh to be reduced to and utilize detected 60 ℃～100 ℃ of radiation thermometer 8b steel wire.If in this temperature range, then be reduced to the situation that room temperature corrects and compare the minimizing effect that obtains rotational deformation more easily with the surface temperature that makes steel wire, because demonstrating the possibility of distortion once more, resilience also reduces.In cooling device, under the situation of the chilled water of use low temperature, can shorten the cooling distance, but hard wire becomes fragile; Removing of distortion becomes difficult; Therefore, as heat eliminating medium, preferably use the following warm water of surface temperature of target steel wire; Reach the state of slow cooling, process the steel wire of so-called annealed structure.In the form of above-mentioned (1), (2),, also regulate the cooling after the heat treated according to the mode that makes the Steel Wire Surface temperature reach 60 ℃～100 ℃ in order to process the steel wire of so-called annealed structure.
(i) liner main body lining (first embodiment)
Can carry out periphery at steel wire 21 through known method through the steel wire of steel wire correction process is covered in advance through the molten thermoplastic resin and extrudes the liner main body lining that the molten thermoplastic resin forms helical groove in its periphery.In addition, also can be disclosed method among the applicant's the TOHKEMY 2007-298970, promptly when making the SZ liner, under the situation that the cross head mould that does not make the lining of liner main body alternately reversally is rotated, catch preparatory lining steel wire that it is reversed.
(ii) liner main body lining (second embodiment)
In addition, can directly extrude the molten thermoplastic resin in the periphery of steel wire 21 through known method through the steel wire of steel wire correction process and form helical groove.In addition; It also can be disclosed method among the applicant's the TOHKEMY 2006-133753; Promptly when making the SZ liner, under the situation that the cross head mould that does not make the lining of liner main body alternately reversally is rotated, catch the steel wire of correcting through steel wire that it is reversed.
Liner after the lining of liner main body is drawn by traction engine 13 through bosh 12, various inspection layer device 14, is wound up on the cylinder.
In the manufacturing approach of optical cable of the present invention with liner, the rate of change that the SZ that can make optical cable use the torsional direction of the spiral groove of liner alternately to reverse with the reverse angle and the antitrochanter distance of regulation reverses the reverse angle of trying to achieve as follows of liner is below 8%.
[the reverse angle rate of change (%): in the interval of the 10km of resulting SZ liner, measure reverse angle, be used in the mean value of value maximum in the difference of the reverse angle before and after 1 continuous pitch, represent] with % divided by this interval reverse angle.
In the manufacturing approach of optical cable of the present invention with liner, the unidirectional rate of change of reversing the swivel distance of trying to achieve as follows of liner that can make optical cable use the torsional direction of the spiral groove of liner to rotate along wantonly 1 direction of S direction or Z direction with the swivel distance of regulation is below 4%.
[swivel is apart from the rate of change (%): in the interval of the resulting unidirectional 10km that reverses liner, measure the swivel distance, be used in before and after 1 continuous pitch swivel apart from difference in maximum value divided by the mean value of this interval swivel distance, represent with %].
Embodiment
Below, about the manufacturing approach of optical cable of the present invention, describe through preferably making embodiment more specifically, but the present invention is not limited to the embodiment of the following stated with liner.
< as the evaluation of the steel wire of tensile strength body >
(1), steel wire is cut into the length of 1m, the height (mm) of the circular arc when being determined at the protruding state of formation on the horizontal panel about the evaluation of the craspedodrome property of steel wire.
(2) about the evaluation of the rotational deformation amount of tensile strength body; The about 100mm of the end that is wound on the steel wire on the cylinder is 90 ° with the length direction with respect to steel wire bends, be determined at the anglec of rotation (rotation property) apart from the primary position of bending part of pulling out under the open state behind the 10m.
< optical cable is with the evaluation of liner >
(1), use process capability index (Cp value) to estimate as the evaluation of optical cable with the quality stability of liner.In qualitative control department, the ability that will in the specification limit of regulation, produce product is called process capability, and the numerical value after will quantizing to this process capability is called process capability index.Process capability index (Cp value) uses the value by (upper specification limit value-specification lower limit)/(6 * standard deviation) tries to achieve.It has been generally acknowledged that this value is 1.33 when above, can not produce defective products.
(2) as the evaluation of optical cable with the sudden change (deviation) of the physics value of liner; Calculate front and back poor of 1 pitch length measured value of 1 angle of twist measured value or 1 rotation of 1 time of continuous adjacent counter-rotating continuously, estimate through wherein maximum value (maximum amplitude of fluctuation).
About the evaluation of optical cable with liner; On the 10km of resulting product length, carry out; Liner for the spiral groove that is provided with unidirectional rotation is estimated with (spiral) pitch, estimates with reverse angle for the liner that is provided with along the spiral groove of SZ direction counter-rotating.
Need to prove that optical cable is meant that with the pitch in the liner spiral groove that is used for unidirectional rotation rotates 1 time Cycle Length, this measured value is with the product representation of linear velocity and 1 rotational time, and every rotation is calculated for 1 time.In addition, reverse angle is the anglec of rotation that comes and goes the spiral groove of counter-rotating along SZ, and each counter-rotating is all calculated.
In addition, change ratio is set at the maximum amplitude of fluctuation of said reverse angle in the liner 10km interval of manufacturing or pitch length divided by separately mean value and the number percent of the value that obtains.
Change ratio (%)=(maximum amplitude of fluctuation/mean value) * 100
The liner groove of making cross sectional shape shown in Figure 2 through following method is that the optical cable that SZ reverses is used liner.
Need to prove; In the present embodiment; The number of spiral groove is 3, and to use the cross head mould lining of extruder to have reverse angle be 295 ° (specification limit+20 °), antitrochanter apart from (external diameter of the SZ groove of specification limit+20mm) is the liner main body of 6.0mm as 175mm.
As tensile strength body 21; The external diameter that using turns blue handles is the hard wire 21 of 1.6mm; The steel wire correction process is made as the form of Fig. 4 (1), in addition, and in the operation of second embodiment shown in Fig. 1 (b); With 30m/ minute manufacturing speed rectifier 6a being passed through, is that 10 ° mode is regulated the correct roller angle with the steel wire RA.Roller diameter is that 22mm, groove radius R are that the employed rectifier 6a of 1mm is provided with 3 pairs of 6 rollers shown in Fig. 5 (a).In addition; The steel wire 21 that makes the tension force that utilizes dance roller 5 to apply 63.4MPa is at room temperature through above-mentioned rectifier 6a; Through thermatron 7, set the output of thermatron continuously so that reach 450 ℃ through the surface temperature of radiating the detected steel wire of thermometer 8a in the exit of thermatron.
Then; Warm water cooling bath 9 through 60 ℃; After the surface temperature of steel wire being reached be 60 ℃ through the detected surface temperature of radiation thermometer 8b; Then in hot blast heating tank 10, preheat so that wire temperature reaches 80 ℃; Importing possesses in the cross head mould that melt extrudes machine 11b (rotating mould that is made up of the nozzle with 3 projections) of the mould of liner cross sectional shape shown in Figure 2; Be the adhesive resin (Japan Unicar corporate system, GA-006) of 0.1mm with the thickness of innermost layer and extrude to multilayer in the periphery of steel wire 21 as the high density polyethylene (Prime Polymer corporate system, HI-ZEX6600MA) of the formation resin of liner main body 24, make continuously have SZ counter-rotating groove optical cable with liner 20.
Its result, the craspedodrome property of the steel wire before will importing the cross head mould is 9.2mm at once, rotation property is 15 °.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.02mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 1.68, maximum variation is that 18 °, change ratio are 6.1%, has stable SZ impression orbit.
Optical cable with such SZ impression orbit is the liner that is suitable for the high speed set of coated optical fiber ribbon in the practicality evaluation that forms optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Do not carry out among the embodiment 1 through the insertion in rectifier 6a before the thermatron 7; Shown in Fig. 4 (2), make the form of steel wire correction process and make for (2); Operate equally with embodiment 1 in addition; Behind thermatron 7 and warm water cooling bath 9, regulate so that reach 2 ° mode with the RA of the rectifier 6b of spline structure with embodiment 1, operate equally with embodiment 1 in addition; At wire temperature is to pass through under 60 ℃, makes the optical cable with SZ counter-rotating groove and uses liner.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 4.5mm, rotation property is 4 °.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.01mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 1.71, maximum variation is that 10 °, change ratio are 3.4%, has stable SZ impression orbit.
Optical cable with such SZ impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
The steel wire correction process is the form of (3) shown in Fig. 4 (3); With the same condition of embodiment 1 under through behind rectifier 6a, thermatron 7 and the warm water cooling bath 9, the RA of rectifier 6b is adjusted to 2 °, is to pass through under 60 ℃ at wire temperature; Promptly; Through rectifier 6b, operate equally with embodiment 1 in addition again, make optical cable and use liner with SZ counter-rotating groove.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 3.0mm, rotation property is 0 °.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.03mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 1.77, maximum variation is that 8 °, change ratio are 2.7%, has extremely stable SZ impression orbit.
Optical cable with such SZ impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Comparative example 1
The rectifier 6a that passes through before thermatron 7 and the warm water cooling bath 9 of embodiment 3 is set at 30 ° respectively with the RA of rectifier 6b afterwards, operate equally with embodiment 3 in addition, making has the reverse optical cable of groove of SZ and uses liner.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 14.3mm, rotation property is 30 °.
In addition; The mean outside diameter that resulting optical cable uses liner is that 295 °, average angle of twist pitch are 1.22 as the Cp value of 175mm, reverse angle as 6.02mm, average angle of twist; But maximum variation is 32 °, change ratio is 10.8%, and the craspedodrome property of steel wire and rotation property are compared variation, its result with the arbitrary example among the embodiment 1～3; The change ratio of liner increases, and can't obtain stable SZ impression orbit.
This optical cable, if coated optical fiber ribbon is gathered at a high speed, then can produce the shift in position of paroxysmal groove, thereby break down when forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Comparative example 2
Do not carry out passing through rectifier 6a, do not carry out bending process among the embodiment 1; In addition; Under the condition identical with embodiment 1 through thermatron 7 and warm water cooling bath 9 after, operate equally with embodiment 1, make and have the reverse optical cable of groove of SZ and use liner.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is that 14.0mm, rotation property are 30 °.
In addition; The mean outside diameter that resulting optical cable uses liner is that 295 °, average angle of twist pitch are 1.41 as the Cp value of 175mm, reverse angle as 6.02mm, average angle of twist; But maximum variation is 24 °, change ratio is 8.1%, and the craspedodrome property of steel wire and rotation property are compared variation, its result with the arbitrary example among the embodiment 1～3; The change ratio of liner is big, can't obtain stable SZ impression orbit.
Optical cable with such SZ impression orbit, if coated optical fiber ribbon is gathered at a high speed, then can produce the shift in position of paroxysmal groove, thereby break down when forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Comparative example 3
Use the steel wire of embodiment 1; But do not carry out the processing of the steel wire correction process of embodiment 1, promptly do not carry out passing through in rectifier 6a, heat treatment apparatus 7 and cooling device 9, in addition; Operate equally with embodiment 1; Promptly in hot blast heating tank 10, steel wire is directly preheated to reach 80 ℃, to import to the cross head mould of the mould that possesses the liner cross sectional shape, make optical cable and use liner with SZ counter-rotating groove.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is that 225mm, rotation property are 90 °, inside exists great warpage and rotation.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.03mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 0.95, maximum variation is that 35 °, change ratio are 11.9%; The craspedodrome property of steel wire and rotation property are compared the extreme difference that becomes with the arbitrary example among the embodiment 1～3; Its result, the change ratio of liner is big, can't obtain stable SZ impression orbit.
When forming optical cable, coated optical fiber ribbon is gathered at a high speed with liner if having the optical cable of such SZ impression orbit, then can produce the shift in position of paroxysmal groove, so fault is multiple.
These are created conditions and the result gathers and is shown in table 1, table 2.
Steel wire after use is turned blue and handled is as the tensile strength body; Thermatron 7 is set output so that the surface temperature of steel wire reaches 550 ℃ in the exit of thermatron; Operate equally with embodiment 1 in addition, make optical cable and use liner with SZ counter-rotating groove.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 11.5mm, rotation property is 40 °.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.01mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 1.41, maximum variation is that 18 °, change ratio are 6.1%, has stable SZ impression orbit.
Optical cable with such SZ impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 6.0mm, rotation property is 30 °.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.02mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 1.55, maximum variation is that 11 °, change ratio are 3.7%, has stable SZ impression orbit.
Optical cable with such SZ impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Embodiment 6
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 4.6mm, rotation property is 15 °.
In addition; The mean outside diameter that resulting optical cable uses liner as 6.03mm, average angle of twist be 295 °, average angle of twist pitch as the Cp value of 175mm, reverse angle be 1.58, maximum variation is that 10 °, change ratio are 3.4%, has extremely stable SZ impression orbit.
Optical cable with such SZ impression orbit is the liner that when forming optical cable, is suitable for the high speed set of coated optical fiber ribbon with liner.
These are created conditions and the result gathers and is shown in table 1, table 2.
Comparative example 4
The steel wire that use is turned blue and handled; Thermatron is provided with output so that the temperature of steel wire reaches 550 ℃ in the exit of thermatron; Operate equally with comparative example 2 in addition; Be obstructed overcorrection device,, make optical cable and use liner with SZ counter-rotating groove through thermatron 7 and cooling device 9.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 15.6mm, rotation property is 86 °.
In addition; The mean outside diameter that resulting optical cable uses liner is that 295 °, average angle of twist pitch are 175mm as 6.01mm, average angle of twist, and the Cp value of reverse angle is 1.38, is 9.5% but maximum variation is 28 °, change ratio; The craspedodrome property of steel wire and rotation property are compared variation with the arbitrary example among the embodiment 4～6; Its result, the change ratio of liner is big, can't obtain stable SZ impression orbit.
Optical cable with such SZ impression orbit can produce the shift in position of paroxysmal groove during with the high speed set of liner coated optical fiber ribbon in forming optical cable, therefore breaks down.
These are created conditions and the result gathers and is shown in table 1, table 2.
Comparative example 5
Turn blue the steel wire after handling except use, operate equally, promptly do not carry out passing through in rectifier 6a, heat treatment apparatus 7 and cooling device 9, make and have the reverse optical cable of groove of SZ and use liner with comparative example 3.
Its result, the craspedodrome property that will import the preceding steel wire of cross head mould at once is 35mm, rotation property is 90 °.
In addition; The mean outside diameter that resulting optical cable uses liner is that 295 °, average angle of twist pitch are 1.34 as the Cp value of 175mm, reverse angle as 6.03mm, average angle of twist; But maximum variation is 22 °, change ratio is 7.5%, and the craspedodrome property of steel wire and rotation property are compared variation, its result with the arbitrary example among the embodiment 4～6; The change ratio of liner is big, can't obtain stable SZ impression orbit.
These are created conditions and the result gathers and is shown in table 1, table 2.
Table 1
Annotate 1: the having or not of the processing of turning blue (process annealing processing)
The specification of annotating 2: the 1 correct rollers, the 2nd correct roller is following:
Roller external diameter: φ 22mm
Roller number: 3 pairs 6
The form of clamp groove: radius 1.0mm
Table 2
Annotate) 3: craspedodrome property: steel wire is cut into the length of 1m, the height of the circular arc when on flat board, placing with free state
Annotate) 4: the anglec of rotation in the length of the 10m when steel wire is placed to linearity with free state
Notes) 5:CP value (process capability index)=(specification value higher limit-specification value lower limit)/(6 * standard deviation) SZ reverses liner with 1 reverse angle (1 pitch) expression, and Z reverses liner with 1 pitch long (1 rotation) expression.
Annotate) 6: maximum variation: measure reverse angle (SZ reverses) or pitch long (Z reverses) in the liner 10km interval, the value of the maximum in the difference of reverse angle (SZ reverses) before and after 1 continuous pitch or pitch long (Z reverses)
Annotate) 7: the change ratio: with maximum variation divided by the reverse angle mean value of the liner of manufacturing or the pitch length mean value value (%) after 100 times again
Liner groove through cross sectional shape shown in the following method shop drawings 3 (a) is that the optical cable that Z rotates is used liner.
In the present embodiment, except the steel wire correction process of change (B), be that first embodiment is made according to the operation shown in Fig. 1 (a).Promptly be set at and be included in the steel wire correction process is implemented above-mentioned (i) operation of liner main body lining afterwards through the preparatory lining of steel wire manufacturing approach.
Need to prove that the number of spiral groove is 5 in the present embodiment, making crosshead die through extruder has 1 swivel apart from (external diameter of the Z rotation groove of specification limit ± 25mm) is the liner main body of 8.8mm for 500mm.
As the tensile strength body; The external diameter that using turns blue handles is the hard wire of 2.6mm; Manufacturing speed with 15m/ minute; In the steel wire correction process of the form of Fig. 4 (1), through rectifier 6a, the dancer rools angle is so that the steel wire RA θ of the rectifier 6a among Fig. 5 (a) reaches 10 °.With roller diameter is that 34mm, groove radius R are that the employed rectifier 6a of 1.4mm is provided with 3 pairs of 6 rollers.
Then, make above-mentioned steel wire 21,, set output so that the surface temperature of steel wire reaches 450 ℃ in the exit of thermatron 7 continuously through thermatron at room temperature through above-mentioned rectifier 6a.Then; After making the surface temperature of steel wire reach 60 ℃ through 60 ℃ warm water cooling baths 9; Then in hot blast heating tank 10, preheat so that wire temperature reaches 80 ℃; Import to have circular cross head mould preparatory lining with in the extruder; Week will be extruded to multilayer with the straight chain shape ldpe resin (Prime Polymer corporate system, NEO-ZEX2015M) of resin as preparatory lining with adhesive resin (Japan Unicar corporate system, GA-006), in periphery in, in bosh 12a, cools off immediately, and it is the steel wire of the preparatory coating 26 of 6.35mm that formation has adhesive resin layer 25 and the external diameter that innermost layer thickness is 0.1mm.
Then; In hot blast heating tank 10b, preheat so that the surface of preparatory coating reaches 80 ℃; Import among the liner main body lining extruder 11b of cross head mould with the mould that possesses the liner cross sectional shape (rotating mould that constitutes by nozzle) with 5 projections; Extrude as the high density polyethylene (Prime Polymer corporate system HI-ZEX6600MA) of liner main part formation with resin in the periphery of steel wire, making has the optical cable of Z rotation groove with liner 20.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 6.3mm, and rotation property is 5 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.52, maximum variation is 3.4% as 17mm, change ratio, has stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Embodiment 8
Do not carry out the insertion in rectifier 6a before passing through thermatron among the embodiment 7; But in the form of (2) shown in Fig. 4 (2); With embodiment 7 likewise through behind thermatron 7 and the warm water cooling bath 9, the mode that reaches 2 ° with the RA θ of rectifier 6b is regulated, and is to pass through under 60 ℃ at wire temperature; Operate equally with embodiment 7 in addition, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 4.5mm, and rotation property is 4 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.77mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.59, maximum variation is 1.6% as 8mm, change ratio, has stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Steel wire correction process as the form of (3) shown in Fig. 4 (3); With embodiment 7 likewise through behind rectifier 6a, thermatron 7 and the warm water cooling bath 9; The mode that reaches 2 ° with the RA θ of rectifier 6b is regulated; At wire temperature is to pass through under 60 ℃, makes the optical cable with Z rotation groove and uses liner.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 3.0mm, and rotation property is 0 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.61, maximum variation is 1.4% as 7mm, change ratio, has extremely stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when extremely being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Comparative example 6
Do not carry out the insertion in rectifier 6a before passing through thermatron 7 among the embodiment 7, after through thermatron 7 and warm water cooling bath 9, operate equally, make optical cable and use liner with Z rotation groove with embodiment 7.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 15.6mm, and rotation property is 55 °.
In addition; The mean outside diameter that resulting optical cable uses liner is 1.41 as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch; But maximum variation is 32mm, change ratio is 6.4%, and the craspedodrome property of steel wire and rotation property are compared variation, its result with the arbitrary example among the embodiment 7～9; The change ratio of liner is big, can't obtain stable Z impression orbit.
Optical cable with such Z impression orbit when forming optical cable, if carry out the high speed set of coated optical fiber ribbon, then can produce the shift in position of paroxysmal groove with liner, and therefore the set fault takes place.
These are created conditions and the result gathers and is shown in table 3, table 4.
Comparative example 7
Use the steel wire of embodiment 7; The bending process, steel wire heating operation and the refrigerating work procedure that do not carry out steel wire correction process among the embodiment 7, promptly do not utilize rectifier to implement in addition, are operated with embodiment 7 equally; Promptly in hot blast heating tank 10, steel wire is directly preheated to 80 ℃; With embodiment 7 preparatory coating is set likewise, likewise imports to then in the cross head mould of the mould that possesses the liner cross sectional shape, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 94mm, and rotation property is 180 °, and inside exists great warpage and rotation.
In addition; The mean outside diameter that resulting optical cable uses liner is 1.01 as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch; But maximum variation is 35mm, change ratio is 7%, and the craspedodrome property of steel wire and rotation property are compared the extreme difference that becomes, its result with the arbitrary example among the embodiment 7～9; The change ratio of liner is big, can't obtain stable Z impression orbit.
Optical cable with such Z impression orbit when forming optical cable, if carry out the high speed set of coated optical fiber ribbon, then can produce the shift in position of paroxysmal groove with liner, and therefore the set fault takes place.
These are created conditions and the result gathers and is shown in table 3, table 4.
As the tensile strength line; The diameter that using turns blue after handling is the steel wire of 2.6mm; Thermatron is provided with output so that the temperature of steel wire reaches 550 ℃ in the exit of thermatron, operates equally with embodiment 7 in addition, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 11.5mm, and rotation property is 45 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.77mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.42, maximum variation is 3.2% as 16mm, change ratio, has stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
The steel wire identical after use is turned blue and handled with embodiment 10; Thermatron 7 is set output so that the temperature of steel wire reaches 550 ℃ in the exit of thermatron; Operate equally with embodiment 8 in addition, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 6.0mm, and rotation property is 20 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.45, maximum variation is 2.4% as 12mm, change ratio, has stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Embodiment 12
The steel wire identical after use is turned blue and handled with embodiment 10; Thermatron 7 is set output so that the temperature of steel wire reaches 550 ℃ in the exit of thermatron; Operate equally with embodiment 9 in addition, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 4.6mm, and rotation property is 10 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.48, maximum variation is 1.2% as 6mm, change ratio, has stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Except the RA θ with the rectifier 6b in the steel wire correction process among the embodiment 12 is set at 6 °, operate equally with embodiment 12, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 5.2mm, and rotation property is 8 °.
In addition, the mean outside diameter that resulting optical cable uses liner as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch be 1.44, maximum variation is 1.0% as 5mm, change ratio, has stable Z impression orbit.
Optical cable with such Z impression orbit is the liner of the high speed set of the coated optical fiber ribbon when being suitable for forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Comparative example 8
The steel wire identical after use is turned blue and handled with embodiment 10; Thermatron 7 is set output so that the temperature of steel wire reaches 550 ℃ in the exit of thermatron; Operate equally with comparative example 6 in addition; Promptly do not insert in the rectifier, operate equally with embodiment 7 in addition, make optical cable and use liner with Z rotation groove.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 15.6mm, and rotation property is 85 °.
In addition; The mean outside diameter that resulting optical cable uses liner is 1.41 as 8.80mm, 1 rotation mean pitch as the Cp value of 500mm, pitch; But maximum variation is 32mm, change ratio is 6.4%, and the craspedodrome property of steel wire and rotation property are compared variation, its result with the arbitrary example among the embodiment 10～12; The change ratio of liner is big, can't obtain stable Z impression orbit.
Optical cable with such Z impression orbit, if coated optical fiber ribbon is carried out high speed set, then can produce the shift in position of paroxysmal groove, so break down when forming optical cable with liner.
These are created conditions and the result gathers and is shown in table 3, table 4.
Comparative example 9
The steel wire identical after use is turned blue and handled with embodiment 10; Do not carry out the steel wire correction process among the embodiment 10, bending process, steel wire heating operation and the refrigerating work procedure that does not promptly utilize rectifier to implement fully fully; Operate equally with embodiment 10 in addition; Promptly in hot blast heating tank 10, steel wire is directly preheated to 80 ℃; With embodiment 7 preparatory coating is set likewise, likewise imports to then in the cross head mould of mould, make optical cable and use liner with Z rotation groove with liner cross sectional shape.
Its result will import preparatory lining at once and use the craspedodrome property of the preceding steel wire of cross head mould to be 35mm, and rotation property is 90 °.
In addition; The mean outside diameter that resulting optical cable uses liner is 1.35 as 8.78mm, 1 rotation mean pitch as the Cp value of 500mm, pitch; But maximum variation is 24mm, change ratio is 4.8%, and the craspedodrome property of steel wire and rotation property are compared variation, its result with the arbitrary example among the embodiment 10～12; The change ratio of liner is big, can't obtain stable Z impression orbit.
Optical cable with such Z impression orbit in forming optical cable, if carry out the high speed set of coated optical fiber ribbon, then can produce the shift in position of paroxysmal groove with liner, therefore breaks down.
These are created conditions and the result gathers and is shown in table 3, table 4.
Table 3
Annotate 1: the having or not of the processing of turning blue (process annealing processing)
The specification of annotating 2: the 1 correct rollers, the 2nd correct roller is following
Roller external diameter: φ 34mm
Roller number: 3 pairs 6
The form of clamp groove: radius is 1.4mm
Table 4
Annotate) 3: craspedodrome property: steel wire is cut into the length of 1m, the height of the circular arc when on flat board, placing with free state
Annotate) 4: the anglec of rotation in the length of the 10m when steel wire is placed to linearity with free state
Notes) 5:CP value (process capability index)=(specification value higher limit-specification value lower limit)/(6 * standard deviation) Z reverses liner with 1 pitch long (1 rotation) expression.
Annotate) 6: maximum variation: measure the pitch long (Z reverses) in the liner 10km interval, the value of the maximum in the difference of the pitch long (Z reverses) before and after 1 continuous pitch
Annotate) 7: the change ratio: with maximum variation divided by the pitch length mean value of the liner of the manufacturing value (%) after 100 times again
Utilizability on the industry
The optical cable of above-mentioned formation can make the inner bending that exists of the steel wire that is wound on the feed roller significantly reduce with the manufacturing approach of liner; Therefore can make the optical cable of the spiral groove that the few SZ of change ratio of few unidirectional spiral groove that reverses of change ratio with pitch on whole length or reverse angle reverses and use liner, the optical cable that can be used as the raising of the aggregate speed that can realize optical fiber heart line thus is used with the manufacturing approach of liner effectively.
Symbol description
3 feed rollers, 5 dance rollers
6a, 6b rectifier 7 thermatrons
8a, 8b radiation thermometer 9 cooling devices
10a, 10b preheat the groove 11a extruder that is covered in advance
11b liner main body lining extruder 12a, 12b bosh
13 traction engines, 14 inspection operations
15 coiling machines, 20 liners
21 tensile strength bodies (steel wire), 22 rib portions
23 spiral grooves, 24 liner main body coatings
25 adhesive resin layers, 26 preparatory coating
600 601～606 correct rollers.
Claims (6)
1. an optical cable is with the manufacturing approach of liner, and said optical cable is formed with optical fiber heart line with liner and takes in the helical groove of usefulness around the tensile strength line that is made up of steel wire, and said manufacturing approach is characterised in that it comprises following operation:
(A) will be wound on operation that the steel wire on the feed roller sees off,
(B) be used for this steel wire rotational deformation the steel wire correction process of removing and stretching and
(C) liner main body lining operation,
And said steel wire correction process (B) is made up of any operation in following (1)～(3):
(1) with the steel wire seen off insert carry out bending process in the rectifier that possesses rotatable a plurality of rollers after, with steel wire heating handle to surface temperature be 400～600 ℃, then the surface temperature of steel wire is cooled to 60～100 ℃ steel wire correction process,
(2) with the steel wire heating of seeing off handle be 400～600 ℃ to surface temperature after, the surface temperature of steel wire is cooled to 60～100 ℃, insert the RA that possesses rotatable a plurality of rollers and be the steel wire correction process that carries out bending process in 2～10 ° the rectifier,
(3) with the steel wire seen off insert carry out bending process in first rectifier that possesses rotatable a plurality of rollers after; With steel wire heating handle to surface temperature be 400～600 ℃; Surface temperature with steel wire is cooled to 60～100 ℃ then, inserts the RA possess rotatable a plurality of rollers and be the steel wire correction process that carries out bending process in 2～10 ° second rectifier;
Liner main body lining operation (C) is by following (i) or (ii) constitute:
(i) be covered in advance through the molten thermoplastic resin in periphery, extrude the molten thermoplastic resin and form the liner main body lining operation of helical groove in its periphery through the steel wire of said steel wire correction process,
(ii) form the liner main body lining operation of helical groove extruding the molten thermoplastic resin through the periphery of the steel wire of said steel wire correction process.
2. optical cable according to claim 1 is with the manufacturing approach of liner, and wherein, making the RA with respect to steel wire in first rectifier in the steel wire correction process of rectifier or (3) in the steel wire correction process of said (1) is 5 °～20 °.
3. optical cable according to claim 1 is with the manufacturing approach of liner, and wherein, said (B) steel wire correction process is the correction process of said (3).
According to each described optical cable in the claim 1～3 with the manufacturing approach of liner, wherein, steel wire is hard wire or the nonheat-treated hard wire after the thermal treatment.
According to each described optical cable in the claim 1～3 with the manufacturing approach of liner; Wherein, The torsional direction that said optical cable use liner is a spiral groove reverses liner apart from the optical cable that alternately reverses with SZ for reverse angle and antitrochanter with regulation; The rate of change that makes resulting this SZ reverse the reverse angle of trying to achieve as follows of liner is below 8%
The reverse angle rate of change (%): in the interval of the 10km of resulting SZ liner, measure reverse angle, be used in the mean value of value maximum in the difference of the reverse angle before and after 1 continuous pitch, represent with % divided by this interval reverse angle.
According to each described optical cable in the claim 1～3 with the manufacturing approach of liner; Wherein, Said optical cable is the unidirectional liner that reverses that the torsional direction of spiral groove rotates along any direction of S direction or Z direction with the swivel distance of regulation with liner; Making resulting this unidirectional rate of change of reversing the swivel distance of trying to achieve as follows of liner is below 4%
Swivel is apart from the rate of change (%): in the interval of the resulting unidirectional 10km that reverses liner, measure the swivel distance, be used in before and after 1 continuous pitch swivel apart from difference in maximum value divided by the mean value of this interval swivel distance, represent with %.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2010293778A JP5698971B2 (en) | 2010-12-28 | 2010-12-28 | Manufacturing method of spacer for optical cable |
| JP293778/2010 | 2010-12-28 |
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| Publication Number | Publication Date |
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| CN102565973A true CN102565973A (en) | 2012-07-11 |
| CN102565973B CN102565973B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110441398.9A Active CN102565973B (en) | 2010-12-28 | 2011-12-26 | Method for manufacturing liner for optical cable |
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| CN (1) | CN102565973B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109668788A (en) * | 2018-12-24 | 2019-04-23 | 太原理工大学 | A kind of Full-automatic steel wire rope mechanics properties testing system and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116348275A (en) * | 2022-12-08 | 2023-06-27 | 苏州聚复科技股份有限公司 | Crystallization control device and method for producing 3D printing wire |
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| JP2008197486A (en) * | 2007-02-14 | 2008-08-28 | Ube Nitto Kasei Co Ltd | Manufacturing method of spacer for optical fiber cable |
| CN101416089A (en) * | 2006-04-04 | 2009-04-22 | 宇部日东化成株式会社 | Method and device for manufacturing spiral spacer |
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| JPH10305308A (en) * | 1997-05-07 | 1998-11-17 | Nippon Steel Corp | High strength high carbon steel wire excellent in elongation property and manufacture thereof |
| JP4810174B2 (en) * | 2004-10-05 | 2011-11-09 | 宇部日東化成株式会社 | Method and apparatus for manufacturing spiral spacer |
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| EP1930914A2 (en) * | 2000-02-08 | 2008-06-11 | W. Brandt Goldsworthy & Associates, Inc. | Composite reinforced electrical transmission conductor |
| CN2597119Y (en) * | 2002-12-30 | 2004-01-07 | 赵怀友 | Device for continuously producing low-relaxed prestress steel wire |
| JP2007179983A (en) * | 2005-12-28 | 2007-07-12 | Sumitomo Denko Steel Wire Kk | Manufacturing method of coated steel wire |
| CN101416089A (en) * | 2006-04-04 | 2009-04-22 | 宇部日东化成株式会社 | Method and device for manufacturing spiral spacer |
| JP2008197486A (en) * | 2007-02-14 | 2008-08-28 | Ube Nitto Kasei Co Ltd | Manufacturing method of spacer for optical fiber cable |
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| CN109668788A (en) * | 2018-12-24 | 2019-04-23 | 太原理工大学 | A kind of Full-automatic steel wire rope mechanics properties testing system and detection method |
| CN109668788B (en) * | 2018-12-24 | 2021-07-13 | 太原理工大学 | Full-automatic steel wire rope mechanical property detection system and detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012141433A (en) | 2012-07-26 |
| JP5698971B2 (en) | 2015-04-08 |
| CN102565973B (en) | 2015-04-15 |
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