CN1310804A - Fiber coating assembly having a cooled guide die and method of using the same - Google Patents
Fiber coating assembly having a cooled guide die and method of using the same Download PDFInfo
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- CN1310804A CN1310804A CN99808833A CN99808833A CN1310804A CN 1310804 A CN1310804 A CN 1310804A CN 99808833 A CN99808833 A CN 99808833A CN 99808833 A CN99808833 A CN 99808833A CN 1310804 A CN1310804 A CN 1310804A
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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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
- C03C25/18—Extrusion
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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
- G02B6/02—Optical fibres with cladding with or without a coating
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Abstract
A coating assembly for applying a coating to an optical waveguide fiber includes a guide die having a guide die land region (48), a sleeve for containing pressurized coating material (34), a sizing die (38), and a cooling mechanism (40) operatively associated with the guide die to cool the guide die so that a temperature of the pressurized coating material in an area adjacent the guide die land region is lowered. Maintaining the coating at a relatively cool temperature reduces the likelihood of coating flood.
Description
Background of invention
The present invention relates to a kind of coating assembly that is used for coating optic fibre of novelty, and suppress the method for coating spill-over with it.Specifically, the present invention relates to a kind of coating assembly that is used for coating optic fibre, it comprises a cooling body, is used for being suppressed at the spill-over that takes place when the guiding mould carries out the optical waveguide coating.
Optical fiber must have higher intensity, so that in optical fiber being merged to a protection sheath or optical cable, when optical cable being installed and using optical fiber, can bear the stress that is run into.Although fiber strength is generally bigger with prefabricated stick drawn wire the time, the surface imperfection of introducing in the optical fiber because of processing can make this intensity reduce fast.
In order to keep the intensity of new drawing optical fiber, after wire drawing, one deck or two-layer protective finish are applied on the optical fiber traditionally, at once so that protection optical fiber is avoided surface abrasion.Coating generally is made of a kind of organic or inorganic coating material.In the embodiment of two layers of coatings, first coating or primary coating are applied directly on the optical fiber, and second coating or secondary are applied on the primary coating.Applying step generally is a necessary part of optic fibre manufacture process, and it guarantees to apply coating material before the optical fiber original surface is impaired.
United States Patent (USP) the 4th, 531 has disclosed a kind of assembly that is used to apply glass optical fiber No. 959, is shown in Fig. 1, and its relevant portion is included in this by reference.Coating assembly 10 generally comprises guiding mould 12, is positioned at the dividing bushing 14 of guiding mould 12 belows, and is connected on the sizing die 16 below the sleeve 14.Among the figure, coating assembly 10 is installed on the supporting structure 17.
In order to produce optical fiber, in the direction of arrow A, the fiber optic materials that draws is sent into coating assembly 10 by guiding mould 12.By the hole in the sleeve 14 22, send coating material to coating assembly 10.Coating material is in the direction of arrow B, by pipeline, transmits under the situation of pressurized and constant temperature.The last meniscus of coating material generally is formed at guiding mould contact region 18, and contact region 18 will describe in detail on the interface between optical fiber and the coating material in the back.When optical fiber passes through coating assembly 10, coating material is quickened.When coating material and optical fiber entered sizing die 16, a part of coating material was pulled out sizing die 16 with optical fiber, is coated on the optical fiber.Not coating material recycle in coating assembly 10 of pulling out with optical fiber.
In producing the coated fiber process, each parts of coating assembly all play a role.The sizing die setting is applied to the coating amount on the optical fiber.Because the outlet of sizing die is tapered, so it can also make optical fiber be positioned at the center, it is concentric causing coating.For example, referring to United States Patent (USP) 4,246,299.United States Patent (USP) 5,366,527 have disclosed a kind of method that is used for the control coating diameter, its content by this with being included in this.This method is called temperature control sizing die TCSD, comprises the local temperature that changes sizing die, to change the coating viscosity in the sizing die.Lower application temperature is corresponding to higher coating viscosity.As a result, colder mould applies less coating to optical fiber, and the mould of heat applies more coating.
Dividing bushing is positioned at the top of sizing die, and it remains on the coating material of pressurized between sizing die and the guiding mould.As previously mentioned, coating material is to transmit under the situation of constant temperature pressurized.The hydraulic pressure of coating material is should be enough high, so as near guiding mould throttle orifice the formation meniscus, promptly at lower position, rather than the lower end of sleeve along guiding mould contact region.
The guiding mould plays lid to the supercharging coating assembly, and prevents that coating material from flowing out from the top of coating assembly.When the guiding mould is not enough or excessive can not realize this function the time because of the coating assembly internal pressure, can produce so-called " coating spill-over ", and must interrupt drawing process.The cost of interrupting drawing process is very high, because it has reduced the utilization rate of machine, and has reduced the length that spurs the available fiber of producing.
When spurring at a high speed, the incidence of coating spill-over increases.Being used to make the way that applies spill-over risk minimum traditionally is for higher pulling rate, to make less guiding mould.For example, speed be about 20 meter per seconds or bigger optical fiber pulling technology generally to use the throttle orifice interior diameter be 20 mils (508 microns) or less coating guiding mould, and if increase pulling rate, must do these throttle orifice diameters littler so.Throttle orifice is narrow more, and optical fiber contact hole wall causes the chance of wearing and tearing big more.As a result, be difficult to pulling rate is increased to more than 20 meter per seconds, and the suffered wearing and tearing of optical fiber because of narrowing down, coating guiding mould throttle orifice do not increase.This traditional method is worked fairly goodly in practice, and meets the theoretic knowledge of people to guiding mould inner fluid mechanics, that is, less guiding mould has the bigger overvoltage limit.
But, when using less guiding mould one significant disadvantages is arranged, that is, optical fiber is easier to be worn before coating.When the throttle orifice of guiding mould reduced, the gap between optical fiber and the guiding mould also reduced.Under working condition, fiber-optic vibration and pulling misalignment are inevitable.As taking place during the misalignment in fiber-optic vibration or pulling, when optical fiber is subjected to disturbance and when departing from the center line of the mould that leads, optical fiber more likely rubs mutually with the wall of the less guiding mould of diameter.Because this friction occurs in before the coating, is coated with preceding wearing and tearing so be called.
Wearing and tearing are harmful to before being coated with, because they can weaken optical fiber tempestuously, and/or produce holiday.When the optical fiber of reduction is easy in when pulling, at the off-line proof test or fracture at the scene.Therefore, although the coating spill-over that takes place when using less guiding mould to overcome high speed to a certain extent, less guiding mould also can increase the possibility of wearing and tearing before undesirable being coated with.
The difficulty that proposes previously is not detailed, and they are some that weaken in many factors of effect of traditional coating assembly and fiber coating method.Also have other problem deserving of attention, still, above-mentioned these problems suffice to show that equipment and the method used in the prior art have much room for improvement.
Summary of the invention
The present invention has several advantages.For example, the invention provides a kind of fiber coating assembly that can under high speed pulling situation, make coating spill-over minimum.Another advantage of the present invention is that fiber coating assembly can be by high speed and stable manner work.Another advantage of the present invention is that fiber coating assembly uses the relatively large guiding mould of diameter, so that the incidence minimum of wearing and tearing before being coated with.
A preferred embodiment of the present invention attempts to realize at least some in the above-mentioned advantage.This embodiment comprise one have the guiding mould, comprise the sleeve of pressurized coating material and the coating assembly of sizing die.Coating assembly also comprises a cooling body, and it is related with the guiding mould in operation, is used for cooled guide die, reduces the temperature of the pressurized coating material in the zone adjacent with guiding mould contact region.This mechanism carries out the part cooling to the pressurized coating material, and reduces the viscous heating that produces when spurring at a high speed.Not so, uncontrolled viscous heating meeting reduces the viscosity of coating material, increases the possibility of coating spill-over.Therefore, near the pressurized coating material that coating assembly of the present invention will lead the mould contact region remains on colder temperature relatively, reduces the possibility that the coating spill-over takes place in the guiding mould thus.
Cooling body can be installed on the outer wall of guiding mould.Cooling body can be fully around at least a portion of outer wall, and perhaps cooling body is intermittently around outer wall, so that the guiding mould is carried out the point-like cooling.Although cooled guide die outer wall bottom 1st/3rd is most important, cooling body can extend along the whole length of outer wall.
Cooling body can comprise that is installed in a guiding mould cooling collar on every side, and a kind of fluidtransmission line that is used for cooling fluid (gas or liquid) is sent to cooling collar.In another embodiment, cooling body comprises a thermoelectric sheet with guiding mould heat interchange.This thermoelectricity sheet such as heat pump general work are extracted heat out the guiding mould, thereby cool off the coating fluid in the zone adjacent with the guiding mould.
The present invention is used for preventing that the method for fiber coating assembly generation coating spill-over from may further comprise the steps: make optical fiber by guiding mould and the coating sleeve that comprises the pressurized coating material; And the temperature of maintenance guiding mould is less than 90 ℃.Also can keep leading the temperature of mould less than the temperature in of coating material; That is to say the temperature during less than the coating sleeve pipe that enters coating assembly when coating material.In other words, the temperature of the temperature that keeps the guiding mould less than the time without any positive cooling.By a cooling body being installed on the guiding mould, the guiding mould can be remained on colder temperature relatively.For example, cooling collar can be installed on the outer wall of guiding mould.
Attached purpose of the present invention and advantage will be narrated in the following description, and wherein part purpose and advantage will be found out significantly by describing, and perhaps can learn these purposes and advantage by putting into practice the present invention.Objects and advantages of the present invention can be utilized special various instruments of pointing out in the appended claim book and combination thereof to realize and obtain.
Summary of drawings
Instructions comprises accompanying drawing, and accompanying drawing constitutes the part of instructions.Accompanying drawing illustrates the present preferred embodiment of the present invention, and is used from explanation principle of the present invention with the detailed description one of above-mentioned general description and following preferred embodiment.
Fig. 1 is a sectional view, shows traditional coating assembly that is used for coating optic fibre;
Fig. 2 is a sectional view, shows the coating assembly that the present invention is used for coating optic fibre;
Fig. 3 A-3C is a sectional view, shows the guiding mould and the sleeve of traditional coating assembly, has provided the possible configuration of meniscus in the guiding mould contact region;
Fig. 4 is a cross section side-looking face, shows second embodiment that the present invention is used for the coating assembly of coating optic fibre;
Fig. 5 is a side cross-sectional view, shows the 3rd embodiment that the present invention is used for the coating assembly of coating optic fibre;
Fig. 6 is a side cross-sectional view, shows the 4th embodiment that the present invention is used for the coating assembly of coating optic fibre.
The detailed description of preferred embodiment
Referring now to accompanying drawing, identical label is represented similar parts in the accompanying drawing.At first with reference to Fig. 2, the coating assembly that the present invention is used for coating optic fibre among this figure is represented with label 30.This coating assembly 30 is specially adapted to descend coating optic fibre at pulling rate greater than the situation (for example pulling rate is 20 meter per seconds or bigger, and speed is 25 meter per seconds or bigger then better, preferably 30 meter per seconds or bigger) of 5 meter per seconds, at this moment can produce the situation of coating spill-over.Coating assembly comprises guiding mould 32, dividing bushing 34 and sizing die 38, and wherein dividing bushing 34 has the hole 36 that allows coating material 37 therefrom pass through.The various coating materials of ultraviolet curing material, thermosetting material and thermoplastic, polymeric materials and so on are applicable to coating assembly of the present invention.Under the situation of constant temperature (being temperature in) pressurized, make coating material pass through hole 36.Coating material is keep-uped pressure,, guarantee that the height of die assembly internal coating material remains essentially in same surface level so that in whole optical fiber manufacture process.
Coating assembly 30 also comprises a cooling body 40, and it is got in touch with guiding mould 32 in operation, is used for cooled guide die 32, the mould contact region 48 that particularly leads, the temperature of pressurized coating material 37 in reduction and guiding mould 32 adjacent areas thus.In Fig. 2, cooling body 40 is installed on the outer wall 42 of guiding mould 32, and around outer wall 42.40 local thermolysis of cooling body are used for cooled guide die 32.Coating spill-over when as will be described in more detail, local cooled guide die 32 can suppress to spur at a high speed.
When uncoated optical fiber 44 (or for once the optical fiber of coating) enters coating assembly 30 by guiding mould 32, form on the interface between optical fiber 44 and the coating material 37 coating material 37 on meniscus 46.Shown in Fig. 3 A-3C, can suppose that generally meniscus 46 has three kinds of configurations on this in guiding mould contact region 48.As shown in Figure 3A, meniscus 46a can be limited in the corner Gu Chu of guiding mould contact region.Shown in Fig. 3 B, meniscus 46b can float in guiding mould contact region.At last, shown in Fig. 3 C, meniscus 46c can rise near the top of guiding mould contact region, even higher.Last a kind of configuration representative coating overflow status, at this moment, if the observer looks down the guiding mould, just can see meniscus.
Can make optical fiber by the pulling rate that increases optical fiber more economically.But, under higher pulling rate, such as 20 meter per seconds or bigger, 25 meter per seconds or bigger then better, 30 meter per seconds or bigger preferably, pulling technology becomes and more possesses challenge, and the possibility of coating spill-over also increases.
Coating assembly has a stable operation window.The upper limit of this window is represented the maximum pressure that coating assembly can be supported under a given speed, in the situation that does not apply spill-over.This limit is sometimes referred to as " the overvoltage limit ".If surpass this limit, then go up meniscus and increase, promptly coating material rises in guiding mould contact region, and the coating material top that can overflow coating assembly by the mould that leads.Fig. 3 C shows this situation.
Experimental data shows, under higher coating speed, surpasses 5 meter per seconds such as pulling rate, and for example speed is 20 meter per seconds or bigger, and 25 meter per seconds or bigger then better are preferably 30 meter per seconds or bigger, and the overvoltage limit can reduce.For these higher pulling rates, be used for predicting between the model of the overvoltage limit and the experimental data lacking correlativity.The phenomenon that model takes place when obviously not considering high pulling rate.Be used to explain that this different hypothesis is, when pulling rate increased, the viscosity of guiding mould contact region floating coat material dropped to a nominal value corresponding to coating material temperature in (that is, being approximately 50 ℃).Below two kinds of mechanism may cause the part of coating material viscosity to descend: shear shinning and viscous heating.
Shear shinning is such as the ubiquitous phenomenon of non-Newtonian fluids such as polymkeric substance.When fluid stood bigger shear rate, the molecule itself in the fluid can align, and caused the viscosity of fluid to drop to below zero shear force.
The viscosity heating is the phenomenon that Newtonian fluid and non-Newtonian fluid all exist.When fluid stood bigger shear rate, friction generates heat in meeting between the fluid molecule.This living thermal phenomenon makes the local rising of the temperature of fluid.For optical fiber, the speed during by coating material rises shear stress because of optical fiber.These shear stress produce heat, and the temperature of coating material is raise.The coating material temperature rises its viscosity is descended.Viscosity heating in the guiding mould contact region clearly; This viscosity heating can make the temperature in of the local temperature of coating material greater than coating material.The rising of temperature greatly reduces the viscosity of guiding mould contact region internal coating material.Therefore, the present inventor concludes that the viscosity heating is to cause the dominant mechanism that the overvoltage limit descends when spurring optical fiber at a high speed.
Therefore, cooling body 40 is discharged heat by the conduit that passes through guiding die wall 42, the temperature in control and the reduction guiding mould contact region 48.Return with reference to Fig. 2, heat is discharged the wall 42 of guiding mould and realize that by cooling body 40 cooling body 40 is forms of cooling collar.The local cooling in guiding mould contact region has been reduced the intensification of the coating material that causes because of the viscosity heating.Lower coating material temperature is corresponding to higher coating material viscosity.Higher coating material viscosity has improved the overvoltage limit of coating assembly, and this makes coating assembly be not easy spill-over.
With cooling collar shown in Figure 2 40 be placed on wall 42 outside the guiding mould 32 around, and fully around outer wall 42.Because guiding mould dissipate heat so the temperature of outer wall 42 is controlled the temperature that will change guiding mould inwall, comprises its contact region 48.Therefore, cooling collar 40 can reduce the temperature of outer wall 42, thereby reduces the temperature of inwall.
Coating assembly 30 can also comprise temperature control unit 49, it be installed in sizing die 38 near, be preferably in sizing die 39 substrate near.As United States Patent (USP) 5,366,527 are disclosed, when pulling out optical fiber by sizing die, and the coating diameter of temperature control unit 49 control optical fiber.
It will be understood by those skilled in the art that can be with other method design cooling collar 40, to obtain identical cooling effect.For example, cooling collar can be designed to only extend along a part of length of guiding mould outer wall 42.In one embodiment, extend 40 lower parts along guiding mould outer wall 42 of cooling collar.For example, cooling collar is the length in the extension bitmap 2 at least preferably, corresponding to 1/3rd length of outer wall bottom.This length roughly is the length of contact region 48, it is defined as guiding mould interior diameter here and keeps constant substantially zone.In this embodiment, the local cooling in most important zone to the guiding mould so that under standard conditions, is retained in coating material in this lower guiding mould contact region.But,,, comprise its top so heat will be with the All Ranges from the guiding mould because heat spreads in whole guiding mould.
In another embodiment, cooling body is centered around around the outer wall of guiding mould intermittently.In other words, cooling body not " cover " on the outer wall of guiding mould, but only with some some heat interchange, the guiding mould is carried out point-like cooling.Because heat spreads in whole guiding mould, so under many occasions, only the way of cooled guide die outer wall is gratifying on some point.
In the second embodiment of the present invention, as shown in Figure 4, control cooling collar 40 with external control system 52, this control system 52 is determined optimum temperature according to the data of collecting from sensor 54, and sensor 54 is installed on the guiding mould.Sensor 54 monitors the information of viscosity heating in the expression guiding mould contact region 48.For example, the temperature of sensor 54 monitoring guiding place, mould contact region guiding mould inwalls is perhaps monitored the height of going up meniscus in the guiding mould contact region.Control system 52 and temperature control system 56 exchange of information, temperature control system 56 is in response to the temperature from the Data Control cooling fluid (gas or liquid) of control system 52.According to detected state in the guiding mould contact region, change the temperature of cooling fluid, to keep optimum Working.When experiment has drawn data set being made up of detection variable (such as guiding mould inner wall temperature and last meniscus height and corresponding optimum temperature), can use this embodiment.
Fig. 5 shows the third embodiment of the present invention.Guiding mould 60 is positioned at the top of dividing bushing 62, and as the previous embodiment, dividing bushing 62 is inlets that coating material 64 enters coating assembly.Sizing die 66 is positioned at the below of dividing bushing 62.In this embodiment, the upper surface of guiding mould 60 is general planes.Thermoelectric sheet 68 is positioned at the upper surface of guiding mould 60, and with 60 heat interchange of guiding mould.
Thermoelectric sheet 68 utilizes the Peltier effect, as the heat pump general work, guiding mould 60 is cooled off.About the detailed introduction of Peltier effect, for example to roll up at 1992 " physics, chemistry and solid magazine " the 53rd referring to people such as Caillat, the 8th phase, that delivers on the 121-129 page or leaf " uses (Bi of T.H.M method growth
xSb
1-x)
2Te
2The pyroelecthc properties of monocrystalline solid solution ".As heat pump, thermoelectric sheet 68 needs a kind of heat reservoir, so that heat is extracted out from the top of thermoelectric sheet 68.Heat reservoir (not shown) can be used with the heating radiator of thermoelectric sheet 68 heat interchange and form.For example the temperature of heating radiator is remained on constant level with recirculation water or liquid pool.For cooled guide die 60, heating radiator will be discharged heat from the upper surface of thermoelectric sheet 68.This makes the upper surface of heat from guiding mould 60 again, and even the contact region discharge of guiding mould, the temperature of cooled guide die contact region internal coating material thus.The cooling coating material can reduce viscous heating, increases the viscosity of coating material, improves the overvoltage limit, and the possibility that reduces the coating spill-over thus.Can regulate the voltage level and the polarity that are applied on the thermoelectric sheet 68, with the temperature of control guiding mould 60.
Fig. 6 shows the fourth embodiment of the present invention.The same with the embodiment of Fig. 5, guiding mould 70 is positioned at the top of dividing bushing 72, plays the inlet effect that coating material 74 enters coating assembly.Sizing die 76 is positioned at the below of dividing bushing 72.In this 4th embodiment, guiding mould 70 has the upper surface at a band angle.Thermoelectric sheet 78 is positioned on the band angle upper surface of guiding mould, and with 70 heat interchange of guiding mould.The working method of this thermoelectric sheet 78 is identical with the working method of thermoelectric sheet 68 among Fig. 5.
The coating assembly of Fig. 6 also comprises thermocouple device 80, and it is arranged on the inside surface of guiding mould contact region 82 guiding moulds 70.Thermocouple device 80 is measured the temperature of contact region 82.Then, control the work of thermoelectric sheet 78, so that cooled guide die 70 suitably with this temperature reading.
Coating assembly of the present invention can be used for nuditing fiber or the prior mid-coat layer that has been applied on the optical fiber are applied coating, to obtain a composite coating.
The present invention is used for preventing that the method for optical waveguide coating assembly generation coating spill-over from may further comprise the steps: make optical fiber by guiding mould and the coating sleeve that comprises the pressurized coating material, and the mould that preferably will lead remains on the temperature less than 90 ℃, temperature is then better less than 75 ℃, is preferably less than 60 ℃.The guiding mould can also be remained on temperature less than the temperature in of coating material, such as less than 50 ℃.
Though do not narrate of the present invention all need feature, the invention provides a kind of coating assembly, it can be worked under high speed pulling situation, and has solved the problem of coating spill-over, but does not adopt the less guiding mould of throttle orifice.
Before the present invention, under the situation of pulling at a high speed, use the less guiding mould of throttle orifice.Fiber manufacturers adopts the less guiding mould of throttle orifice, is because fluid dynamic phenomena can occur under high speed pulling situation.When pulling speed increased, viscous heating can appear.Viscous heating has reduced the viscosity of guiding mould contact region floating coat material.Coating material viscosity is low to have caused the less overvoltage limit, and can cause applying spill-over.Guiding mould with less throttle orifice can prevent to apply spill-over by increasing the overvoltage limit.
In the past, minimum throttle orifice diameter can be approximately 20 mils (508 microns) or littler guiding mould is used for pulling rate and is approximately 20 meter per seconds or situation faster.When speed increases, generally must reduce the diameter of throttle orifice.For example, before the present invention, be in 25 meter per seconds or the bigger process at pulling rate, must use interior diameter only the guiding mould of 13 mils (330.2 microns), successfully coating optic fibre.There is a undesirable negative effect in the less guiding mould of throttle orifice, and promptly it can increase the risk that is coated with preceding wearing and tearing.
But, the cooled of the application of the invention guiding membrane module, can minimum throttle orifice diameter obtain to surpass greater than 15 mils (381 microns) and in 20 mils (508 microns) or the bigger guiding mould 25 meters/less even the speed of 30 meter per seconds.The cooling body of coating assembly of the present invention carries out the part cooling to coating material, and reduces the viscous heating that produces when spurring at a high speed.The temperature that reduces guiding mould contact region floating coat material can reduce the viscosity of coating material, can increase the overvoltage limit thus, thereby reduce the incidence of coating spill-over.Therefore, the present invention allows to use the relatively large guiding mould of diameter in the situation of pulling fast, does not have the high risk preceding wearing and tearing that are coated with.
Those skilled in the art readily understand additional advantage and modification.Therefore, wide region of the present invention is not limited to detail and the representative device that illustrates and describe here.Correspondingly, do not break away from the spirit or scope of the general inventive concept that the appended claim book limited, can carry out various variations.
Claims (20)
1. a coating assembly that is used for optical fiber is applied coating is characterized in that, comprising:
The guiding mould;
Sleeve is used to comprise the pressurized coating material;
Sizing die; With
Cooling body, it is related with described guiding mould in operation, is used to cool off described guiding mould.
2. assembly as claimed in claim 1 is characterized in that, described guiding mould comprises an outer wall, and described cooling body is positioned on the described outer wall.
3. assembly as claimed in claim 2 is characterized in that, described cooling body centers on the part of the described outer wall of described guiding mould at least fully.
4. assembly as claimed in claim 3 is characterized in that, described cooling body extends along the whole length of the described outer wall of described guiding mould.
5. assembly as claimed in claim 2 is characterized in that, described cooling body is intermittently around described outer wall, so that described guiding mould is carried out the point-like cooling.
6. assembly as claimed in claim 1 is characterized in that, described cooling body comprises that is installed in a described guiding mould cooling collar on every side, and a kind of fluidtransmission line that is used for cooling fluid is sent to described cooling collar.
7. assembly as claimed in claim 1 is characterized in that, described cooling body comprises a thermoelectric sheet with the heat interchange of described guiding mould.
8. assembly as claimed in claim 7, it is characterized in that, described assembly also comprises a sensor and a controller, wherein said sensor is installed on the described guiding mould, be used for measuring at least of height of described guiding mould temperature and described guiding in-mold coating material, described controller is got in touch with electrical method and described sensor and described thermoelectric sheet.
9. assembly as claimed in claim 8 is characterized in that described sensor is a thermocouple device.
10. one kind is used for preventing that fiber coating assembly from the method for coating spill-over taking place, and it is characterized in that, may further comprise the steps:
Make optical fiber by guiding mould and the coating sleeve that comprises the pressurized coating material; And
Described guiding mould is remained on temperature less than 90 ℃.
11. method as claimed in claim 10 is characterized in that, the temperature that keeps described guiding mould is less than 75 ℃.
12. method as claimed in claim 10 is characterized in that, the temperature that keeps described guiding mould is less than 60 ℃.
13. method as claimed in claim 10 is characterized in that, keeps the temperature in of the temperature of described guiding mould less than the pressurized coating material.
14. method as claimed in claim 13 is characterized in that, temperature in is approximately 50 ℃.
15. method as claimed in claim 10 is characterized in that, described maintenance step comprises uses a cooling body to cool off described guiding mould.
16. method as claimed in claim 15 is characterized in that, the described cooling body in the described use step comprises a cooling collar that is installed on the described guiding mould outer wall.
17. a method that is used for coating optic fibre is characterized in that, may further comprise the steps:
Make optical fiber by a guiding mould that comprises the pressurized coating material with 25 meter per seconds or higher speed; And
By during the step described guiding mould is remained on the temperature that is enough to complete coating optic fibre described, the minimum interior diameter of described guiding mould is 15 mils or bigger.
18., it is characterized in that make optical fiber by the mould that leads described comprising with 30 meter per seconds or bigger speed by step as method as described in the claim 17.
19. method as claimed in claim 17 is characterized in that, the minimum interior diameter of described guiding mould is 20 mils or bigger.
20. a method that is used to prevent to take place the coating spill-over in the optical waveguide coating assembly is characterized in that, may further comprise the steps:
Make optical fiber by guiding mould and the coating sleeve that comprises the pressurized coating material; And
The temperature that keeps described guiding mould less than described guiding mould without any the temperature under the actively cooled situation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9337098P | 1998-07-20 | 1998-07-20 | |
| US60/093,370 | 1998-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1310804A true CN1310804A (en) | 2001-08-29 |
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ID=22238549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99808833A Pending CN1310804A (en) | 1998-07-20 | 1999-06-24 | Fiber coating assembly having a cooled guide die and method of using the same |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1109754A1 (en) |
| JP (1) | JP2002521712A (en) |
| KR (1) | KR20010053571A (en) |
| CN (1) | CN1310804A (en) |
| AU (1) | AU4717099A (en) |
| BR (1) | BR9912235A (en) |
| CA (1) | CA2338055A1 (en) |
| TW (1) | TW461976B (en) |
| WO (1) | WO2000005608A1 (en) |
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| CN101620009B (en) * | 2009-08-07 | 2010-08-18 | 山西太钢不锈钢股份有限公司 | Optical-fiber temperature measuring probe and optical cable cooling method in high-temperature environment |
| CN109626842A (en) * | 2018-12-13 | 2019-04-16 | 中国电子科技集团公司第四十六研究所 | A kind of coating die and coating method of the replaceable mold core of drawing optical fibers |
| CN110723901A (en) * | 2019-09-29 | 2020-01-24 | 法尔胜泓昇集团有限公司 | Automatic centering and cleaning device for lining pipe of optical fiber annealing furnace and implementation method thereof |
| CN113698111A (en) * | 2021-10-19 | 2021-11-26 | 江东科技有限公司 | Optical fiber drawing coating device and coating method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2809723B1 (en) | 2000-05-30 | 2002-08-30 | Cit Alcatel | OPTICAL FIBER COATING APPARATUS |
| FI110641B (en) * | 2001-03-19 | 2003-02-28 | Nextrom Holding Sa | Method and apparatus in connection with an optical cable manufacturing line |
| US7045010B2 (en) * | 2001-09-06 | 2006-05-16 | Alcatel | Applicator for high-speed gel buffering of flextube optical fiber bundles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043001A (en) * | 1990-05-29 | 1991-08-27 | Corning Incorporated | Method and apparatus for fiber cooling |
-
1999
- 1999-06-24 CN CN99808833A patent/CN1310804A/en active Pending
- 1999-06-24 AU AU47170/99A patent/AU4717099A/en not_active Abandoned
- 1999-06-24 WO PCT/US1999/014349 patent/WO2000005608A1/en not_active Application Discontinuation
- 1999-06-24 EP EP99930687A patent/EP1109754A1/en not_active Withdrawn
- 1999-06-24 KR KR1020017000798A patent/KR20010053571A/en not_active Application Discontinuation
- 1999-06-24 JP JP2000561521A patent/JP2002521712A/en active Pending
- 1999-06-24 CA CA002338055A patent/CA2338055A1/en not_active Abandoned
- 1999-06-24 BR BR9912235-9A patent/BR9912235A/en not_active Application Discontinuation
-
2000
- 2000-02-15 TW TW088112418A patent/TW461976B/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620009B (en) * | 2009-08-07 | 2010-08-18 | 山西太钢不锈钢股份有限公司 | Optical-fiber temperature measuring probe and optical cable cooling method in high-temperature environment |
| CN109626842A (en) * | 2018-12-13 | 2019-04-16 | 中国电子科技集团公司第四十六研究所 | A kind of coating die and coating method of the replaceable mold core of drawing optical fibers |
| CN110723901A (en) * | 2019-09-29 | 2020-01-24 | 法尔胜泓昇集团有限公司 | Automatic centering and cleaning device for lining pipe of optical fiber annealing furnace and implementation method thereof |
| CN113698111A (en) * | 2021-10-19 | 2021-11-26 | 江东科技有限公司 | Optical fiber drawing coating device and coating method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000005608A1 (en) | 2000-02-03 |
| EP1109754A1 (en) | 2001-06-27 |
| JP2002521712A (en) | 2002-07-16 |
| CA2338055A1 (en) | 2000-02-03 |
| AU4717099A (en) | 2000-02-14 |
| TW461976B (en) | 2001-11-01 |
| KR20010053571A (en) | 2001-06-25 |
| BR9912235A (en) | 2001-04-10 |
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