CN102627399B - Vertical stretch method and device of optical fiber prefabricating rod - Google Patents
Vertical stretch method and device of optical fiber prefabricating rod Download PDFInfo
- Publication number
- CN102627399B CN102627399B CN201210113806.2A CN201210113806A CN102627399B CN 102627399 B CN102627399 B CN 102627399B CN 201210113806 A CN201210113806 A CN 201210113806A CN 102627399 B CN102627399 B CN 102627399B
- Authority
- CN
- China
- Prior art keywords
- diameter
- optical fiber
- fiber prefabricated
- preform
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down
- C03B37/01242—Controlling or regulating the down-draw process
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention relates to a vertical stretch method and device of an optical fiber prefabricating rod. The vertical stretch method comprises the following steps: an optical fiber prefabricating rod with a large diameter is vertically arranged on a stretch device, the lower end of the optical fiber prefabricating rod is heated by a heating device, so that the optical fiber prefabricating rod is fused and thinned, and extends downwards, and an extension section is connected with to a traction device; the lower end of the optical fiber prefabricating rod with the large diameter and a transition section are continuously heated so as to be fused and thinned; meanwhile, through downward traction of the traction device at the traction speed of V2, and an optical fiber prefabricating rod with a small diameter, which extends downwards, is formed; meanwhile, a clamping device for clamping the optical fiber prefabricating rod with the large diameter moves downwards at a speed of V1, the diameter D1 of the optical fiber prefabricating rod with the large diameter is greater than or equal to 140 mm, and the diameter D2 of the optical fiber prefabricating rod with the small diameter is less than or equal to 120 mm, so that the stretch processing meets that D2 is equal to (V1/V2)1/2*D1. The method and the device, provided by the invention, have the advantages of good processing quality, simple process, easy control and adjustment, higher processing efficiency, simple structure of a processing device, reliable operation and comparability of a solid core prefabricating rod, a glass sleeve and a core rod.
Description
Technical field
The present invention relates to a kind of stretched vertically method and apparatus of preform, be specifically related to a kind of large-diameter optical fiber prefabricated stick to be drawn into processing method and the equipment of smaller diameter fiber prefabricated rods, belong to optical fiber processing technical field.
Background technology
1970, since first U.S. CORNING adopts CVD (Chemical Vapor Deposition) method to prepare prefabricated rods and pull out the optical fiber of low attenuation, there is the working method of multiple making for the glass preform of drawing optical fiber at present.These working methods comprise: outer vapour deposition process (OVD), vapour phase axial deposition technique (VAD), interior vapour deposition process (IVD), improves chemical Vapor deposition process (MCVD), plasma-activated chemical Vapor deposition process (PCVD).
In order to improve the production efficiency of optical fiber, progressively there is using the prefabricated rods of larger original outer diameter and the trend of very fast drawing speed, but in the time that the prefabricated rods that external diameter mean value is greater than to 150 mm is carried out Wire Drawing, be difficult to make hot-zone air-flow arrive desirable laminar flow situation and prefabricated rods is carried out to homogeneous heating, be therefore unfavorable for the control of drawing process and quality.
Utilize stretching technique that large diameter preform bar stretching is become to the prefabricated rods that a kind of diameter is less and be conducive to solve above technical problem.Patent documentation CN 1890189A discloses a kind of method and apparatus of horizontal direction stretching optical fiber base material, but adopt the method bow degree due to the effect prefabricated rods of barred body self gravitation in drawing process finely not control, can cause larger trouble to drawing optical fibers process.
Summary of the invention
Technical problem to be solved by this invention is to propose for the deficiency of above-mentioned prior art existence a kind of stretched vertically method and apparatus of the preform that quality is good, complete processing is easy that stretches.
The present invention for the technical scheme of the stretched vertically method that the problem of the above-mentioned proposition of solution adopts is:
Large-diameter optical fiber prefabricated stick is vertically mounted on stretcher, and the upper end of large-diameter optical fiber prefabricated stick is clamped by a gripping unit;
First preprocessing is carried out in the lower end of preform, form transition section and the section of extending, by heating unit, the lower end of preform is heated, its melting is attenuated and to downward-extension one segment length, the diameter of the section of extending is identical or close with the smaller diameter fiber prefabricated rods diameter after processing;
Will the section of extending access towing mechanism;
Large-diameter optical fiber prefabricated stick lower end and transition section are continued to heat, its melting is attenuated, draw downwards simultaneously by towing mechanism, the speed of traction is V downwards
2, form thus the smaller diameter fiber prefabricated rods to downward-extension;
In the traction downwards of smaller diameter fiber prefabricated rods, the gripping unit of clamping large-diameter optical fiber prefabricated stick moves down, and the speed that gripping unit moves down is V
1, keep thus the continuous feed of large-diameter optical fiber prefabricated stick to heating unit;
The diameter D1 of described large-diameter optical fiber prefabricated stick is more than or equal to 140mm, and the diameter D2 of described smaller diameter fiber prefabricated rods is less than or equal to 120mm, and stretch process is met: D2=(V
1/ V
2)
1/2× D1.
Press such scheme, described large-diameter optical fiber prefabricated stick is real core fibre prefabricated rods, or the combination of glass bushing and plug; Can extend rod or glass extension tube as bare terminal end at the less glass of the upper end of real core fibre prefabricated rods welding diameter, or in the less glass extension tube of the upper end of glass bushing welding diameter as bare terminal end.
Press such scheme, for the large-diameter optical fiber prefabricated stick by glass bushing and plug combination, install vacuum pad in the upper end of glass bushing or glass extension tube, while adding thermal stretch, the interior vacuum degree control of pipe is at 50mbar or below 50mbar.
Press such scheme, described heating unit is graphite resistor furnace or electric induction furnace, or is gas fuel burning device, and heating and temperature control, at 2000-2300 DEG C, pours inert protective gas at heating region when heating.
Press such scheme, the smaller diameter fiber prefabricated rods diameter D2 that large-diameter optical fiber prefabricated stick diameter D1 and the melting at heating and melting place attenuated by photoelectric measuring device continuously or be interrupted and measure, and by adjusting V
1and/or V
2adjust D2.
Press such scheme, described towing mechanism is roller wheel traction device, pulling speed V
2for 20mm/min ~ 1000mm/min.
Press such scheme, the diameter D1 of described large-diameter optical fiber prefabricated stick is 140 ~ 200 mm, and the diameter D2 of described smaller diameter fiber prefabricated rods is 40 ~ 120 mm.
The technical scheme of preform stretched vertically equipment of the present invention is:
Comprise Vertical Rack, Vertical Rack top is installed and is moved up and down gripping unit, move up and down gripping unit top configuration pumped vacuum systems, the middle part of Vertical Rack is installed heating unit and is configured rare gas element puff port, in heating unit and below configure respectively photoelectric measuring device, below heating unit, be installed on towing mechanism.
Press such scheme, the described gripping unit that moves up and down comprises gripping unit and moves up and down device, also disposes middle regulator moving up and down on device; Described towing mechanism is roller wheel traction device, and roller wheel traction device is made up of one or more pairs of rollers, installs along upper and lower parallel interval, comprises the pedestal fairload on top, also comprises main stretching roller, unsteady stretching roller and servo-actuated stretching roller.
Press such scheme, described pumped vacuum systems comprises vacuum pump, vacuum lead, vacuum detection instrument, vacuum pad and graphite heat shield.
Beneficial effect of the present invention is: 1, adopt vertical stretched vertically mode, not only can avoid preform in the time stretching because action of gravity produces bow degree, right alignment after preform bar stretching is guaranteed, and can stretch downwards by the effect of gravity, geometrical dimension to prefabricated rods is better controlled, make the optical fiber prefabricating rod geometry after stretching more even, precision is better, for drawing optical fibers is laid good quality base; 2, complete processing is easy, is easy to control and adjust, and easy to operate, working (machining) efficiency is higher; 3, for the large-diameter optical fiber prefabricated stick by glass bushing and plug combination, while adding thermal stretch, adopt the mode of vacuumizing, in drawing process, can ensure that glass bushing and plug interface are in relative vacuum state always, so greatly improve the quality of prefabricated rods after stretching; 4, another feature of the present invention is to fill rare gas element in stretching base material and Heating element, stablize the stability of gas flow between the softening deformation part of prefabricated rods and heating element, make between heating element and prefabricated rods, to there is continual and steady convection current heat conduction, the cladding diameter fluctuation of guaranteeing prefabricated rods after stretching does not have considerable change compared with the starting stage, has guaranteed the quality of the prefabricated rods after stretching yet; 5, processing units is simple in structure, and serviceability is high, easy to use, can compatible real core prefabricated rods and the combination of glass bushing and plug, and the suitability of equipment is improved greatly.
Brief description of the drawings
Fig. 1 is one embodiment of the invention course of processing schematic diagram.
Fig. 2 is the schematic diagram that one embodiment of the invention vacuumizes.
Fig. 3 is the schematic diagram of one embodiment of the invention diameter measurement.
Fig. 4 is the schematic diagram that one embodiment of the invention is measured feedback and controlled.
Fig. 5 is the side sectional structure chart that moves up and down gripping unit part in embodiment of present device.
Fig. 6 be in embodiment of present device heating unit and photoelectric measuring device face structure iron.
Fig. 7 be in embodiment of present device towing mechanism part face structure iron.
Fig. 8 is the vacuum pad vertical view in pumped vacuum systems in embodiment of present device.
Fig. 9 is the A-A sectional view in Fig. 8.
Embodiment
Further embodiments of the invention are further described below in conjunction with accompanying drawing.
Objective for implementation of the present invention is large-diameter optical fiber prefabricated stick, comprises the combination of real core fibre prefabricated rods or glass bushing and plug.Implementation process is that large-diameter optical fiber prefabricated stick is stretched and becomes smaller diameter fiber prefabricated rods, and the external diameter of described large-diameter optical fiber prefabricated stick is more than or equal to 140mm, is generally 160 ~ 200 mm; The external diameter of described smaller diameter fiber prefabricated rods is less than 120mm, is generally 50 ~ 110 mm.
The process and the operation steps that stretch are:
Described large-diameter optical fiber prefabricated stick 3 is welded with at afterbody prolongation rod or the extension tube that external diameter is less than prefabricated rods external diameter, described prolongation rod or extension tube are silica glass, at high temperature be welded together with large-scale optical fiber prefabricating stick, its object is to reduce the consumption of subsidiary material in drawing process, improve the glass utilization ratio of preform simultaneously, and because auxiliary glass material external diameter diminishes, welding is become easily, thereby also reduced welding cost.The difference that the minor diameter providing in the present embodiment extends rod outside diameter and large-diameter optical fiber prefabricated stick diameter is 25 ~ 65mm.Described minor diameter extends rod and connects with large-diameter optical fiber prefabricated stick coaxial line, and large-diameter optical fiber prefabricated stick extends excellent docking mode with minor diameter straight docking, the docking of transition cone or transition arc docking.
By large-diameter optical fiber prefabricated stick at right angle setting, to stretcher, the prolongation rod of the upper end of large-diameter optical fiber prefabricated stick or extension tube are by moving up and down gripping unit clamping; For the large-diameter optical fiber prefabricated stick by glass bushing and plug combination, install vacuum pad 7 in the upper end of the glass extension tube of glass bushing, connect by the other parts of vacuum pad and pumped vacuum systems; By moving up and down gripping unit, large-diameter optical fiber prefabricated stick is sent into slowly as the graphite resistor furnace of heating unit 4, after entering graphite resistor furnace heating chamber, the front end of large-scale optical fiber prefabricating stick seals suitable for reading stove with tightness system, then rare gas element is transported to graphite resistor furnace heating top, chamber, rare gas element and preform are met, and being created in the mobile gas of gap location between graphite resistor furnace heating chamber and preform, inertia comprises nitrogen, argon gas or helium; Graphite resistor furnace temperature range is 2200 DEG C of left and right, and temperature refers to the temperature of heating element.In the time that objective for implementation is the combination of glass bushing and plug, pumped vacuum systems is opened; When objective for implementation is real core prefabricated rods, without opening pumped vacuum systems.
By the front end of the softening preform of heating chamber heating, when temperature reaches after prefabricated rods base material melting temperature, make a clean sweep of from softening inner cone the smaller diameter fiber prefabricated rods that diameter is thinner, smaller diameter fiber prefabricated rods is clamped to downward traction with the roller of towing mechanism 2 to stretch, in drawing process, move up and down gripping unit and slowly large-diameter optical fiber prefabricated stick feeding is entered to heating unit heating chamber by moving up and down device, while photoelectric measuring device as shown in Figure 3 starts to gather the external diameter data of prefabricated rods, wherein the large footpath photoelectric measuring device 5 in heating unit is measured real core or is melted the major diameter prefabricated rods diameter D1 that shortens real core into by glass bushing and plug, the path photoelectric measuring device 6 of heating unit below is measured the diameter D2 of smaller diameter fiber prefabricated rods, the data of collection are delivered to Operations Analysis 15, and give and move up and down the Controlling System of gripping unit 1 and towing mechanism 2 by data feedback system feedback, by D2=(V
1/ V
2)
1/2it is V that × D1 relation regulates the speed that gripping unit moves down in real time
1roller traction speed V with towing mechanism
2, reach the external diameter of the rear smaller diameter fiber prefabricated rods of required acquisition stretching, until the end that stretches.
Embodiment mono-:
The 200mm external diameter prefabricated rods base material that stretching RIC technique is manufactured is to the prefabricated rods of target 40-100mm external diameter.
Prefabricated rods base material frame, on frame bar system, is placed on graphite heat shield and vacuum pad to the upper surface of base material and fixes; Pumped vacuum systems is opened to plug in the prefabricated rods base material that extracts RIC200mm external diameter and reduced the defects such as interface gas line with the air between surrounding layer; Heating system is opened to intensification, and when temperature reaches after prefabricated rods base material melting temperature, base material will melt; Power system is opened, allowed it that glass after melting is clamped, allow the size of prefabricated rods base material strengthen by the speed of manual regulation power system; Test macro and signal feedback system are opened, on control interface, inputted target external diameter numerical value, stretcher will predict excellent external diameter after automatic restrained stretching by power system, test macro and signal feedback system control, and it is as follows that it records result:
Embodiment bis-:
Utilize present device stretching external diameter to take the prefabricated rods of 80mm external diameter for the solid preform base material of 185mm external diameter,
In drawing process, close vacuum pump, other the same cases equally add thermal stretch to prefabricated rods base material, and it is as follows that it records result:
Stretcher of the present invention is mainly made up of following components:
Comprise steel construction Vertical Rack 20, Vertical Rack top is installed and is moved up and down gripping unit 1, moving up and down gripping unit comprises gripping unit 19 and moves up and down device 16, wherein move up and down device and comprise guide rail and transmission driving mechanism, also dispose middle regulator 17 moving up and down on device, gripping unit can all around be regulated, gripping unit top configuration pumped vacuum systems 18, by vacuum pump 9, vacuum lead, vacuum detection instrument 10, vacuum pad 7, graphite heat shield 8 forms, wherein vacuum pad is attached together graphite heat shield and prefabricated rods base material by pull of vacuum, a Water-cooling circulating device is set on vacuum pad 7, comprise the water jacket 34 of more than half circular arc in disk body, the two ends of water jacket arrange respectively cooling water intake 32 and water outlet 33, at the upper radially vacuum pumping hole 31 that is also provided with of disk body, communicate with the cavity at vacuum pad middle part, the middle part of Vertical Rack is installed heating unit 4 and is configured rare gas element puff port, heating unit is installed on bracing frame 24 by drop-bottom support 22, heating unit is graphite resistor furnace, formed by parts such as left and right transformer, upper/lower electrode, graphite piece, furnace shells, its Main Function provides thermal source for prefabricated rods heats, and thermal source requires uniform temperature fields, in heating unit and below configure respectively photoelectric measuring device 21, comprise large footpath photoelectric measuring device 5 and path photoelectric measuring device 6, large footpath photoelectric measuring device 5 is calibrated optical transmitting set 11 and is calibrated optical receiver 12 and forms, path photoelectric measuring device 6 is calibrated optical transmitting set 13 and the little optical receiver 14 of calibrating forms by little, for the diameter measurement to prefabricated rods heating zone different zones, the measurement of configurable measurement of furnace temperature, prefabricated rods melting zone quartz temperature, the voltage measurement system of graphite piece upper/lower electrode in addition, below heating unit, be also installed on towing mechanism, described towing mechanism 2 is roller wheel traction device, comprise rolling wheel support frame 25He Gun road adjustment mechanism 29, roller wheel traction device is made up of one or more pairs of rollers, install along upper and lower parallel interval, comprise the pedestal fairload 23 on top, first pedestal fairload contacts the prefabricated rods that stretches out from fire door, make it ensure good locus, also comprise main stretching roller 26, stretching roller 27 and servo-actuated stretching roller 28 float, active drawing roller is by draw speed, stretching moment of torsion is by Operations Analysis 15 computings, form closed loop feedback with measuring apparatus, the adjustment of Real-time and Dynamic, ensure the accurate of processing parameter, the product that output is qualified, stretching roller floats, the weight of the prefabricated rods that stretches out according to different time sections, play the effect of lifting and poising action, be beneficial to the cutting on line of prefabricated rods and cut.
Claims (7)
1. a stretched vertically method for preform, is characterized in that
Large-diameter optical fiber prefabricated stick is vertically mounted on stretcher, and the upper end of large-diameter optical fiber prefabricated stick is clamped by a gripping unit;
First preprocessing is carried out in the lower end of preform, form transition section and the section of extending, by heating unit, the lower end of preform is heated, its melting is attenuated and to downward-extension one segment length, the diameter of the section of extending is identical or close with the smaller diameter fiber prefabricated rods diameter after processing;
Will the section of extending access towing mechanism;
Large-diameter optical fiber prefabricated stick lower end and transition section are continued to heat, its melting is attenuated, draw downwards simultaneously by towing mechanism, the speed of traction is V downwards
2, form thus the smaller diameter fiber prefabricated rods to downward-extension;
In the traction downwards of smaller diameter fiber prefabricated rods, the gripping unit of clamping large-diameter optical fiber prefabricated stick moves down, and the speed that gripping unit moves down is V
1, keep thus the continuous feed of large-diameter optical fiber prefabricated stick to heating unit;
The diameter D1 of described large-diameter optical fiber prefabricated stick is more than or equal to 140mm, and the diameter D2 of described smaller diameter fiber prefabricated rods is less than or equal to 120mm, and stretch process is met: D2=(V
1/ V
2)
1/2× D1;
The smaller diameter fiber prefabricated rods diameter D2 that large-diameter optical fiber prefabricated stick diameter D1 and the melting at heating and melting place attenuated by photoelectric measuring device continuously or be interrupted and measure, and by adjusting V
1and/or V
2adjust D2;
Described towing mechanism is roller wheel traction device, pulling speed V
2for 20mm/min ~ 1000mm/min;
Roller wheel traction device is made up of one or more pairs of rollers, installs along upper and lower parallel interval, comprises the pedestal fairload on top, also comprises main stretching roller, unsteady stretching roller and servo-actuated stretching roller.
2. by the stretched vertically method of preform claimed in claim 1, it is characterized in that described large-diameter optical fiber prefabricated stick is the combination of real core fibre prefabricated rods or glass bushing and plug; Extend rod or glass extension tube as bare terminal end at the less glass of the upper end of real core fibre prefabricated rods welding diameter, or in the less glass extension tube of the upper end of glass bushing welding diameter as bare terminal end.
3. by the stretched vertically method of preform claimed in claim 2, it is characterized in that for the large-diameter optical fiber prefabricated stick by glass bushing and plug combination, vacuum pad is installed in upper end in glass bushing or glass extension tube, and while adding thermal stretch, the interior vacuum degree control of pipe is at 50mbar or below 50mbar.
4. by the stretched vertically method of the preform described in claim 1 or 2; it is characterized in that described heating unit is graphite resistor furnace or electric induction furnace; or be gas fuel burning device, heating and temperature control, at 2000-2300 DEG C, is filled with inert protective gas at heating region when heating.
5. by the stretched vertically method of the preform described in claim 1 or 2, it is characterized in that the diameter D1 of described large-diameter optical fiber prefabricated stick is 140 ~ 200 mm, the diameter D2 of described smaller diameter fiber prefabricated rods is 40 ~ 120 mm.
6. the stretched vertically equipment of a preform, it is characterized in that comprising Vertical Rack, Vertical Rack top is installed and is moved up and down gripping unit, move up and down gripping unit top configuration pumped vacuum systems, the middle part of Vertical Rack is installed heating unit and is configured rare gas element puff port, in heating unit and below configure respectively photoelectric measuring device, below heating unit, be also installed on towing mechanism; The described gripping unit that moves up and down comprises gripping unit and moves up and down device, also disposes middle regulator moving up and down on device; Described towing mechanism is roller wheel traction device, and roller wheel traction device is made up of one or more pairs of rollers, installs along upper and lower parallel interval, comprises the pedestal fairload on top, also comprises main stretching roller, unsteady stretching roller and servo-actuated stretching roller.
7. by the stretched vertically equipment of preform claimed in claim 6, it is characterized in that gripping unit top configuration pumped vacuum systems, formed by vacuum pump, vacuum lead, vacuum detection instrument, vacuum pad, graphite heat shield, wherein vacuum pad is attached together graphite heat shield and prefabricated rods base material by pull of vacuum, a Water-cooling circulating device is set on vacuum pad, comprises the water jacket of more than half circular arc in disk body; The two ends of water jacket arrange respectively cooling water intake and water outlet, at the upper radially vacuum pumping hole that is also provided with of disk body, communicate with the cavity at vacuum pad middle part; The middle part of Vertical Rack is installed heating unit and is configured rare gas element puff port, and heating unit passes through drop-bottom support setting on bracing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210113806.2A CN102627399B (en) | 2012-04-18 | 2012-04-18 | Vertical stretch method and device of optical fiber prefabricating rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210113806.2A CN102627399B (en) | 2012-04-18 | 2012-04-18 | Vertical stretch method and device of optical fiber prefabricating rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102627399A CN102627399A (en) | 2012-08-08 |
| CN102627399B true CN102627399B (en) | 2014-12-03 |
Family
ID=46585829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210113806.2A Active CN102627399B (en) | 2012-04-18 | 2012-04-18 | Vertical stretch method and device of optical fiber prefabricating rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102627399B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5674160B2 (en) * | 2012-05-02 | 2015-02-25 | 信越化学工業株式会社 | Drawing method of glass base material |
| CN102849937B (en) * | 2012-09-07 | 2016-07-06 | 长飞光纤光缆股份有限公司 | A kind of large scale solid core fibres prefabricated rods and preparation method thereof and equipment |
| JP6302833B2 (en) | 2014-12-26 | 2018-03-28 | 信越化学工業株式会社 | Glass rod drawing method |
| CN105217951B (en) * | 2015-09-21 | 2017-11-17 | 长飞光纤光缆股份有限公司 | A kind of stretched vertically method and apparatus of preform |
| CN105540037A (en) * | 2016-01-21 | 2016-05-04 | 苏州沃森优金电子科技有限公司 | Optical fiber preform and storage rack |
| JP2017171549A (en) * | 2016-03-25 | 2017-09-28 | 信越化学工業株式会社 | Optical fiber preform contraction processing method, and processing device |
| CN106746585B (en) * | 2016-12-07 | 2023-03-28 | 青海中利光纤技术有限公司 | Optical fiber perform conical head processingequipment |
| CN106904821B (en) * | 2017-02-15 | 2019-03-22 | 天津富通集团有限公司 | The production technology and its large-scale optical fiber prefabricating stick of large-scale optical fiber prefabricating stick |
| CN109354399A (en) * | 2018-12-13 | 2019-02-19 | 武汉光盛通设备咨询有限公司 | A kind of vertical optical fiber preform bar stretching equipment |
| CN109516686B (en) * | 2018-12-21 | 2022-03-29 | 江苏通鼎光棒有限公司 | VAD sintered optical fiber preform mother rod stretching device and method |
| CN111333315B (en) * | 2020-04-29 | 2023-12-01 | 上海煜志科技有限公司 | Optical fiber manufacturing apparatus |
| CN114409242B (en) * | 2021-12-01 | 2023-08-18 | 浙江富通光纤技术有限公司 | Process for manufacturing optical fiber preform and optical fiber |
| CN114200575A (en) * | 2021-12-17 | 2022-03-18 | 中国科学院上海光学精密机械研究所 | Orderly-arranged high-NA multi-core imaging optical fiber and preparation method thereof |
| CN115448589B (en) * | 2022-09-13 | 2024-03-08 | 远东通讯有限公司 | Device and method for precisely extending core rod of optical fiber preform |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63285132A (en) * | 1987-05-19 | 1988-11-22 | Furukawa Electric Co Ltd:The | Method for controlling optical fiber drawing machine |
| JP2583321B2 (en) * | 1988-12-27 | 1997-02-19 | 古河電気工業株式会社 | Method for measuring stretch melt viscosity of optical fiber preform |
| JPH0597459A (en) * | 1991-10-09 | 1993-04-20 | Fujikura Ltd | Drawing device for base material of optical fiber |
| JPH06239639A (en) * | 1993-02-17 | 1994-08-30 | Furukawa Electric Co Ltd:The | Drawing for optical fiber glass matrix |
| CN101367608B (en) * | 2008-10-14 | 2011-07-20 | 长飞光纤光缆有限公司 | Method for manufacturing panda type polarization-preserving fiber |
-
2012
- 2012-04-18 CN CN201210113806.2A patent/CN102627399B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| JP平2-263140A 1990.10.25 * |
| JP平5-97459A 1993.04.20 * |
| JP昭63-285132A 1988.11.22 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102627399A (en) | 2012-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102627399B (en) | Vertical stretch method and device of optical fiber prefabricating rod | |
| CN105217951B (en) | A kind of stretched vertically method and apparatus of preform | |
| KR20010040692A (en) | Method for producing a tube of glassy material, especially quartz glass | |
| CN104211295B (en) | A kind of optic fibre drawing apparatus and drawing process thereof | |
| CN102206040B (en) | Horizontal extension device of optical fiber preform | |
| CN109516686B (en) | VAD sintered optical fiber preform mother rod stretching device and method | |
| CN102875007B (en) | Produce continuous induction melting furnace and the manufacturing process of quartz glass bar | |
| CN102849937B (en) | A kind of large scale solid core fibres prefabricated rods and preparation method thereof and equipment | |
| CN105036541A (en) | Automatic centering device and method for optical fiber preform of fiber-drawing tower | |
| CN101792256B (en) | Test method for large size optical fiber preforms | |
| CN104788014B (en) | A kind of preform prepares and the method for drawing optical fibers | |
| CN104445915A (en) | Device and method for preparing optical fiber preform with VAD(vapor axial deposition)method | |
| CN104556669A (en) | Control method and device for large diameter preform dehydroxylation and vitrification | |
| CN102442774B (en) | Method for manufacturing ultra-low birefringence optical fibre and rotary stretching tower | |
| CN102557399B (en) | Manufacture the method for gas preform | |
| JP5603024B2 (en) | Optical fiber preform manufacturing method | |
| KR20200089229A (en) | Automated large outside diameter preform tipping process and resulting glass preforms | |
| CN104098265A (en) | Collapsing manufacture method with improved axial evenness for core rods of optical fiber preforms | |
| CN105236731A (en) | Melt collapsing and stretching technology of optical fiber preform core rod | |
| CN206369826U (en) | Large core fiber melt-processed processing platform | |
| KR20140065292A (en) | Apparatus for fabricating optical fiber preform | |
| CN209456303U (en) | A kind of preform female rod stretching device of VAD sintering | |
| CN101643312B (en) | Optical fiber preform, method of producing optical fiber preform, and glass rod for producing optical fiber preform | |
| CN107021606B (en) | Method for producing outer sleeve for optical fiber by continuous melting method | |
| CN206970461U (en) | Multifunction quartz glass continuous induction melting furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 430073 Hubei city of Wuhan province Wuchang two Guanshan Road No. four Applicant after: Yangtze Optical Fibre and Cable Co., Ltd Address before: 430073 Hubei city of Wuhan province Wuchang two Guanshan Road No. four Applicant before: Changfei Fibre-Optical & Optical Cable Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHANGFEI FIBRE-OPTICAL + OPTICAL CABLE CO., LTD. TO: YANGTZE OPTICAL FIBRE AND CABLE CO., LTD |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |