CN106125217B - A kind of optical cable preparation method - Google Patents
A kind of optical cable preparation method Download PDFInfo
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- CN106125217B CN106125217B CN201610516851.0A CN201610516851A CN106125217B CN 106125217 B CN106125217 B CN 106125217B CN 201610516851 A CN201610516851 A CN 201610516851A CN 106125217 B CN106125217 B CN 106125217B
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- optical cable
- cable
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- heat
- optical
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Present invention discloses a kind of optical cable preparation methods, which comprises S1, the optical cable for intercepting certain length；S2, optical cable is heat-treated under preset temperature, so that cable sheath is shunk relative to predispersed fiber；S3, the optical cable after heat treatment is subjected to cooling processing；S4, the optical cable inner core at optical cable both ends is fixedly connected with lock pin.The present invention is heat-treated cable sheath, so that cable sheath is shunk in advance with respect to optical cable inner core, subsequent cable sheath when undergoing high temperature again just will not be shunk again, to will not damage to optical cable inner core, the high-temperature resistance that ensure that optical cable improves the signal transmission effect of optical cable.
Description
Technical field
The invention belongs to photoelectric communication technical fields, and in particular to a kind of optical cable preparation method.
Background technique
Optical cable (Optical Fiber Cable) is manufactured to meet the performance specification of optics, machinery or environment,
It is using one or more optical fiber being placed in crust as transmission medium and the communications cable that can use individually or in groups
Component.Optical cable is mainly made of optical fiber (optical fiber) and cable sheath, with a certain number of optical fiber according to certain way
Optical cable inner core is formed, and is coated by cable sheath, to realize the transmission of optical signal.
Optical cable preparation in the prior art specifically: the optical cable for intercepting certain length first, then by the light at optical cable both ends
Cable inner core is fixedly connected with lock pin.
In the prior art to any working process direct marketing of cable sheath, if user encounters height in subsequent use process
Warm environment will lead to cable sheath contraction, and since the optical fiber in optical cable inner core is not the center for being absolutely located at cable sheath,
During punching, optical fiber in cable sheath can distance center have a degree of cheap, cable sheath contraction process can cause
Bending, which occurs, for its internal optical fiber even damages, and influences the laser propagation effect of optical signal.
Therefore, it is necessary to provide a kind of optical cable preparation methods in view of the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of optical cable preparation methods, can be effectively protected optical fiber in the case of a high temperature,
Improve the laser propagation effect of optical signal in optical cable.
To achieve the goals above, technical solution provided in an embodiment of the present invention is as follows:
A kind of optical cable preparation method, which comprises
S1, the optical cable for intercepting certain length；
S2, optical cable is heat-treated under preset temperature, so that cable sheath is shunk relative to predispersed fiber；
S3, the optical cable after heat treatment is subjected to cooling processing；
S4, the optical cable inner core at optical cable both ends is fixedly connected with lock pin.
As a further improvement of the present invention, in the step S2 specifically:
By optical cable according to default specification coil, then the optical cable after coil is heat-treated in an oven.
As a further improvement of the present invention, the temperature being heat-treated in the step S2 be 60 DEG C ~ 80 DEG C, heat treatment when
Between be 0.5 ~ 5h.
As a further improvement of the present invention, the cable sheath is PVC material, the shrinking percentage of cable sheath is 1% ~
10%。
As a further improvement of the present invention, the optical cable is OFNP or OFNR or LSZH optical cable, the receipts of cable sheath
Shrinkage is 1 ‰ ~ 10 ‰.
As a further improvement of the present invention, in the step S2 further include:
By optical cable according to default specification coil, then in an oven by the optical cable after coil, control oven in temperature with
It is gradually increased within a preset time according to preset temperature amplitude from initial temperature, until temperature reaches preset temperature in oven, into
Row heat treatment.
As a further improvement of the present invention, the method also includes:
Step S2 and S3 are repeated, optical cable is repeatedly heat-treated.
As a further improvement of the present invention, the method also includes:
The temperature being repeatedly heat-treated gradually rises.
As a further improvement of the present invention, the optical cable inner core includes the optical fiber and uniformly dispersing in cable sheath
If the carried interest aramid fiber around optical fiber.
As a further improvement of the present invention, the step S4 specifically:
Optical cable inner core is fixed with lock pin by bonded adhesives；
Optical cable inner core after bonding is toasted with lock pin, solidifies bonded adhesives.
The beneficial effects of the present invention are:
Cable sheath is heat-treated, so that cable sheath is shunk in advance with respect to optical cable inner core, it is subsequent to undergo high temperature again
When cable sheath just will not shrink again, to will not damage to optical cable inner core, ensure that the high-temperature resistance of optical cable, improve
The signal transmission effect of optical cable；
By way of stepping up heat treatment temperature, the temperature of optical fiber will not rise sharply, and avoid and draw since temperature rises sharply
The problem of playing optical fiber rupture；
Multi-step heat treatment is carried out to cable sheath, tightening for cable sheath can be consolidated, preshrunk after preventing a step to be heat-treated
Tight cable sheath rebound, improves pre-shrunk effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of specific flow chart of optical cable preparation method in the present invention；
Fig. 2 is the cross section structure schematic diagram of optical cable in the embodiment of the invention.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
Join shown in Fig. 1, the invention discloses a kind of optical cable preparation methods, comprising the following steps:
S1, the optical cable for intercepting certain length；
S2, optical cable is heat-treated under preset temperature, so that cable sheath is shunk relative to predispersed fiber；
S3, the optical cable after heat treatment is subjected to cooling processing；
S4, the optical cable inner core at optical cable both ends is fixedly connected with lock pin.
Joining the optical cable 10 shown in Fig. 2, in the present invention includes optical cable inner core 11 and cable sheath 12, and optical cable inner core 11 includes extremely
The few one multiply aramid fiber 112 for the optical fiber 111 and uniformly dispersing of information transmission around optical fiber 111.Pass through uniformly dispersing
Multiply aramid fiber around optical fiber, can be improved cable strength and tensile property, meanwhile, aramid fiber can play protection to optical fiber and make
With.
In step S2 of the invention, optical cable inner core and cable sheath can be in relatively movable situation, to cable sheath
It is heat-treated, so that cable sheath is shunk in advance with respect to optical cable inner core, the shrinkage of cable sheath is shunk in advance, such as
This, subsequent cable sheath when undergoing high temperature again just will not be shunk again.
Specifically, in step S2, first by optical cable according to default specification coil, then in an oven by the optical cable after coil
It is heat-treated.Specifically, the temperature of heat treatment is 60 DEG C ~ 80 DEG C, and the time of heat treatment is 0.5 ~ 5h.
Wherein, the temperature of heat treatment is unsuitable excessively high, and temperature is excessively high to damage cable sheath, meanwhile, heat treatment
Temperature is also unsuitable too low, and temperature is too low, and the pre- effect tightened is not achieved.Therefore, the heat treatment temperature chosen in the present invention is 60
℃~80℃。
By the heat treatment step in step S2, when cable sheath is PVC material, the shrinking percentage of cable sheath is 1% ~
10%。
According to fire-protection rating, optical cable can be divided into OFNP (indoor single mode fiber cable), OFNR (multimode inside cable), LSZH
(low-smoke non-halogen flame-retardant optical cable) etc., by test, after the heat treatment step in the present invention, OFNP optical cable, OFNR optical cable,
The shrinking percentage of cable sheath is 1 ‰ ~ 10 ‰ in LSZH optical cable.
Further, step S4 specifically:
Optical cable inner core is fixed with lock pin by bonded adhesives；
Optical cable inner core after bonding is toasted with lock pin, solidifies bonded adhesives.
Below in conjunction with specific embodiment, the invention will be further described.
In the first embodiment of the present invention, a kind of optical cable preparation method the following steps are included:
1.1, the optical cable of certain length is intercepted, optical cable includes optical cable inner core and cable sheath, the optical cable in present embodiment
For OFNP (indoor single mode fiber cable) or OFNR (multimode inside cable) or LSZH (low-smoke non-halogen flame-retardant optical cable)；
1.2, by optical cable according to default specification coil, then in an oven by the optical cable after coil, the temperature in oven is controlled
Degree is 70 DEG C, is heat-treated 1h, shrinks cable sheath relative to predispersed fiber；
1.3, the optical cable after heat treatment is removed from oven, and carries out cooling processing, be cooled to room temperature；
1.4, the optical cable inner core and lock pin at optical cable both ends are smeared into bonded adhesives, and toasts bonded adhesives and makes optical cable inner core and insert
Core is fixedly connected.
Cable sheath is heat-treated by step 1.2 in present embodiment, the contraction of the cable sheath after heat treatment
Rate is 5 ‰ or so.
In this way, working as optical cable in actual use, at high temperature (being not higher than 70 DEG C), cable sheath just will not be shunk again, thus
Optical cable inner core will not be damaged, ensure that the high-temperature resistance of optical cable, improve the signal transmission effect of optical cable.
In second embodiment of the present invention, a kind of optical cable preparation method the following steps are included:
2.1, the optical cable of certain length is intercepted, optical cable includes optical cable inner core and cable sheath, the optical cable in present embodiment
Crust is PVC material；
2.2, by optical cable according to default specification coil, then in an oven by the optical cable after coil, the temperature in oven is controlled
Degree according to preset temperature amplitude (10 DEG C/min) to gradually increase within a preset time from 20 DEG C of initial temperature, until oven medium temperature
Degree reaches 70 DEG C of preset temperature, then carries out heat treatment 1h, shrinks cable sheath relative to predispersed fiber；
2.3, the optical cable after heat treatment is removed from oven, and carries out cooling processing, be cooled to room temperature；
2.4, the optical cable inner core and lock pin at optical cable both ends are smeared into bonded adhesives, and toasts bonded adhesives and makes optical cable inner core and insert
Core is fixedly connected.
Cable sheath (PVC material) is heat-treated by step 2.2 in present embodiment, outside the optical cable after heat treatment
The shrinking percentage of skin is 5% or so.
In this way, working as optical cable in actual use, at high temperature (being not higher than 70 DEG C), cable sheath just will not be shunk again, thus
Optical cable inner core will not be damaged, ensure that the high-temperature resistance of optical cable, improve the signal transmission effect of optical cable.
Directly controlling the temperature in oven in first embodiment is 70 DEG C, is then put into optical cable and is heat-treated,
And be different from the first embodiment, in the step 2.2 of present embodiment, the temperature in oven from initial temperature to preset
It is gradually increased in time according to preset temperature amplitude, until temperature reaches preset temperature in oven, wherein initial temperature is room temperature
20 DEG C, preset temperature is the temperature 70 C of heat treatment, is risen by the way of gradually heating from initial temperature value preset temperature
Temperature is increase gradually to 70 DEG C from 20 DEG C of initial temperature in 5min, and the temperature rate of rise in oven is 10 DEG C/min.
By the temperature control mode in present embodiment, the temperature of optical fiber will not rise sharply, and avoid since temperature rises sharply
The problem of causing optical fiber to rupture.
It should be understood that 20 DEG C of initial temperature in present embodiment, 70 DEG C of preset temperature, preset time are in 5min, pre-
If 10 DEG C of temperature amplitude are only the preferred embodiment in the present invention, in other embodiments, above-mentioned parameter can be by
It is set separately according to needs.
In third embodiment of the present invention, a kind of optical cable preparation method the following steps are included:
3.1, the optical cable of certain length is intercepted, optical cable includes optical cable inner core and cable sheath, the optical cable in present embodiment
Crust is PVC material；
3.2, controlling the temperature in oven is 60 DEG C, is heat-treated 1h, shrinks cable sheath relative to predispersed fiber a certain amount of；
3.3, the optical cable after heat treatment is removed from oven, and carries out cooling processing, be cooled to room temperature；
3.4, controlling the temperature in oven is 70 DEG C, is heat-treated 1h, cable sheath is made further to shrink one relative to optical fiber
It is quantitative；
3.5, the optical cable after heat treatment is removed from oven, and carries out cooling processing, be cooled to room temperature；
3.6, controlling the temperature in oven is 80 DEG C, is heat-treated 1h, and cable sheath is made further to walk contraction one relative to optical fiber
It is quantitative；
3.7, the optical cable after heat treatment is removed from oven, and carries out cooling processing, be cooled to room temperature；
3.8, the optical cable inner core and lock pin at optical cable both ends are smeared into bonded adhesives, and toasts bonded adhesives and makes optical cable inner core and insert
Core is fixedly connected.
It is heat-treated in present embodiment by three steps 3.2,3.4,3.6 pairs of cable sheaths (PVC material), at heat
The shrinking percentage of cable sheath after reason is slightly larger than 5%.
It is different from the first embodiment, by 3.2,3.4,3.6 3 steps to cable sheath in present embodiment
It is heat-treated, and the temperature being heat-treated gradually rises, and causes optical fiber when can be heat-treated to avoid the highest temperature is directlyed adopt
The problem of rupture.
Further, tightening for cable sheath can be consolidated by three step heat treatment steps, it is pre- after preventing a step to be heat-treated
The cable sheath rebound tightened, improves pre-shrunk effect.
As can be seen from the above technical solutions, the invention has the following advantages:
Cable sheath is heat-treated, so that cable sheath is shunk in advance with respect to optical cable inner core, it is subsequent to undergo high temperature again
When cable sheath just will not shrink again, to will not damage to optical cable inner core, ensure that the high-temperature resistance of optical cable, improve
The signal transmission effect of optical cable；
By way of stepping up heat treatment temperature, the temperature of optical fiber will not rise sharply, and avoid and draw since temperature rises sharply
The problem of playing optical fiber rupture；
Multi-step heat treatment is carried out to cable sheath, tightening for cable sheath can be consolidated, preshrunk after preventing a step to be heat-treated
Tight cable sheath rebound, improves pre-shrunk effect.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of optical cable preparation method, which is characterized in that the described method includes:
S1, the optical cable for intercepting certain length；
S2, optical cable is heat-treated under preset temperature, so that cable sheath is shunk relative to predispersed fiber；
S3, the optical cable after heat treatment is subjected to cooling processing；
S4, the optical cable inner core at optical cable both ends is fixedly connected with lock pin.
2. the method according to claim 1, wherein in the step S2 specifically:
By optical cable according to default specification coil, then the optical cable after coil is heat-treated in an oven.
3. according to the method described in claim 2, it is characterized in that, the temperature being heat-treated in the step S2 be 60 DEG C ~ 80 DEG C,
The time of heat treatment is 0.5 ~ 5h.
4. according to the method described in claim 3, it is characterized in that, the cable sheath is PVC material, the contraction of cable sheath
Rate is 1% ~ 10%.
5. according to the method described in claim 3, it is characterized in that, the optical cable is OFNP or OFNR or LSZH optical cable, light
The shrinking percentage of cable crust is 1 ‰ ~ 10 ‰.
6. according to the method described in claim 2, it is characterized in that, in the step S2 further include:
By optical cable according to default specification coil, then in an oven by the optical cable after coil, the temperature in oven is controlled with from first
Beginning temperature is gradually increased according to preset temperature amplitude within a preset time, until temperature reaches preset temperature in oven, carries out heat
Processing.
7. the method according to claim 1, wherein the method also includes:
Step S2 and S3 are repeated, optical cable is repeatedly heat-treated.
8. the method according to the description of claim 7 is characterized in that the method also includes:
The temperature being repeatedly heat-treated gradually rises.
9. the method according to claim 1, wherein the optical cable inner core includes the optical fiber in cable sheath
And if carried interest aramid fiber of the uniformly dispersing around optical fiber.
10. the method according to claim 1, wherein the step S4 specifically:
Optical cable inner core is fixed with lock pin by bonded adhesives；
Optical cable inner core after bonding is toasted with lock pin, solidifies bonded adhesives.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610516851.0A CN106125217B (en) | 2016-07-04 | 2016-07-04 | A kind of optical cable preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610516851.0A CN106125217B (en) | 2016-07-04 | 2016-07-04 | A kind of optical cable preparation method |
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| CN106125217A CN106125217A (en) | 2016-11-16 |
| CN106125217B true CN106125217B (en) | 2019-05-17 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110133812B (en) * | 2017-09-20 | 2020-06-12 | 杭州富通通信技术股份有限公司 | Method for manufacturing optical cable |
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| US4016356A (en) * | 1973-09-10 | 1977-04-05 | Raychem Limited | Heat recoverable article |
| JPH02152107A (en) * | 1988-12-02 | 1990-06-12 | Hitachi Cable Ltd | Cable and manufacture thereof |
| CN1072629A (en) * | 1991-10-30 | 1993-06-02 | 诺凯-麦勒弗公司 | The heat treatment method of cable |
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| CN103969773A (en) * | 2013-02-01 | 2014-08-06 | 住友电气工业株式会社 | Optical cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6801695B2 (en) * | 2002-01-04 | 2004-10-05 | Corning Cable Systems Llc | Fiber optic cable having a low-shrink cable jacket and methods of manufacturing the same |
| EP2237090A1 (en) * | 2009-04-03 | 2010-10-06 | Tyco Electronics Raychem BVBA | Method for splicing an optical fiber element |
| CN102722005B (en) * | 2012-06-27 | 2013-12-11 | 江苏银河电子股份有限公司 | Manufacturing method of fiber connector |
| CN203799056U (en) * | 2014-01-09 | 2014-08-27 | 成都奥捷通信技术有限公司 | Positioning plug core sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4016356A (en) * | 1973-09-10 | 1977-04-05 | Raychem Limited | Heat recoverable article |
| FR2313783A1 (en) * | 1975-06-04 | 1976-12-31 | Cables De Lyon Geoffroy Delore | Butt jointed light conductor cable - using pref. plastic sleeve having contraction coefft. 5 to 10 times that of cable sheath |
| JPH02152107A (en) * | 1988-12-02 | 1990-06-12 | Hitachi Cable Ltd | Cable and manufacture thereof |
| CN1072629A (en) * | 1991-10-30 | 1993-06-02 | 诺凯-麦勒弗公司 | The heat treatment method of cable |
| CN103969773A (en) * | 2013-02-01 | 2014-08-06 | 住友电气工业株式会社 | Optical cable |
| CN103219576A (en) * | 2013-05-07 | 2013-07-24 | 四川爱通电子线缆制造有限责任公司 | Production process of radio frequency coaxial cable |
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| CN106125217A (en) | 2016-11-16 |
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