CN1180998C - Optical fiber cone drawing technology and equipment - Google Patents
Optical fiber cone drawing technology and equipment Download PDFInfo
- Publication number
- CN1180998C CN1180998C CNB011345357A CN01134535A CN1180998C CN 1180998 C CN1180998 C CN 1180998C CN B011345357 A CNB011345357 A CN B011345357A CN 01134535 A CN01134535 A CN 01134535A CN 1180998 C CN1180998 C CN 1180998C
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- China
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- optical fiber
- cone
- wire bar
- bar material
- fiber wire
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- 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
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The present invention relates to a method and a device for drawing optical cones of optical fibers. A purpose-made tubular pyrometric cone furnace in a horizontal state is used for heating a compound optical fiber wire bar material ceaselessly rotating. When the middle section of the compound optical fiber wire bar material is softened, the compound optical fiber wire bar material is applied to axial tension so as to make the middle part of the compound optical fiber wire bar material fine-drawn; finally, the compound optical fiber wire bar material is changed into a dumbbell-shaped and symmetrical shape from left to right; the compound optical fiber wire bar material becomes two symmetrical optical cone blanks after being cut from the middle thin waist part. The present invention is characterized in that the whole compound optical fiber wire bar material is always in a horizontal state from heating to finishing drawing, and both ends ceaselessly and synchronously rotate; consequently, the phenomenon that the softened part in the middle section downwards warps because of gravity action is eliminated. The formed optical cone blanks become rotating bodies and have coincident external dimension and excellent symmetrical characteristic.
Description
1. technical field: the invention belongs to fiber optic image transmission device manufacturing technology field.
Be the technical equipment about the manufacturing optical fiber cone, characteristics are that final realization once draws two same specification light cones by the Optical Fiber Composite silk bar that is in level, rotating state being heated and stretching.
2. technical background:
Optical fiber cone be a kind of by optical fiber by certain regular dense arrangement form, two end faces vary in size, shape is similar, pass and resemble taper that number of fibers equates and pass and resemble device.Optical fiber cone is to make the micro light detecting equipment---one of core parts of image intensifier, have zoom and reduction capability, can be made into high-resolution image sensors with the CCD coupling, it has, and volume is little, luminous energy sees through high, simple in structure, solid and reliable advantage.
Optical fiber cone is after optical fiber arrangements is good, through the compound system rod of wire drawing hot pressing, draw through heating and form again, the quantity of simple optical fiber does not change, the two ends area changes, i.e. the diameter difference of optical fiber on two end faces, make image by big hold to be to small end dwindle phenomenon, be the amplification phenomenon by small end to big end, and small end resolving power is more disconnected to be improved, and the multiple of raising equals to bore ratio, the ratio of promptly big or small end face diameter.
The key that draws light cone is that variation in diameter optical axis partly still overlaps with mechanical axis and can not twist in the heating drawing process, for satisfying above-mentioned 2 requirements, traditional technology is to adopt the stretched vertically method, the stretched vertically method is the center that Optical Fiber Composite silk rod is suspended in electric tube furnace, and the control electric furnace is slowly given birth to temperature.After the optical fibre rod that is in high temperature section reaches softening temperature, become awl at following short effect tractive force stretching optical fiber composite filament bar.This method equipment is simple, processing ease, but because the influence of thermal convection, it is asymmetric that top, high-temperature zone is distributed with temperature of lower, is difficult to form symmetric two taper blanks.General can only draw an awl base at every turn.The deficiency of conventional art is that efficient is lower, and the consumption of Optical Fiber Composite silk bar is bigger.
3. summary of the invention
A kind of method of drawing optical fiber light cone, it is characterized in that comprising the following steps: earlier the whole slowly heating of Optical Fiber Composite silk rod that one is in horizontality and does not stop along the axle of Optical Fiber Composite silk rod self to rotate, after treating that it reaches annealing temperature, begin Optical Fiber Composite silk rod stage casing is further heated and imposed axial tension, make stage casing local softening part gradually by drawing-down, after reaching certain size, reduce pulling force, stop the stage casing heating, and begin whole slow cooling cooling, finally make Optical Fiber Composite silk rod become the symmetric dumbbell shaped blank in two ends, promptly a pair of optical fiber cone blank.
The objective of the invention is to raise the efficiency, promptly invented and horizontally rotated the system awl method that stretches, as Fig. 1, level is placed in the Optical Fiber Composite silk rod 9 of 10 kinds in pyrometric cone stove, connects with drawing refreshing axle 7,11 with jig 8.When drawing awl, by the tensile axis 7 of doing synchronous rotation, 11 act on awl base rod 9 two ends equal and opposite in directions, axial tension that direction is opposite, make Optical Fiber Composite silk rod interrupt being heated the drawing-down gradually of softening part, once can pull out a pair of symmetry and well bore base, can enhance productivity one times, the consumption of Optical Fiber Composite silk bar simultaneously also descends to some extent.
Draw awl need make Optical Fiber Composite silk rod stage casing local softening, the part after the Optical Fiber Composite silk bar of horizontal positioned is softening can be subjected to influence of gravity to produce " downwarp "; For overcoming " downwarp ", must make Optical Fiber Composite silk bar two ends ceaselessly, synchronous Rotating with Uniform, otherwise can produce distortion, cause the light cone transitive graph as the time phenomenon that deflects.
4. description of drawings
Fig. 1 is the awl schematic diagram that draws of the present invention
Fig. 2 is the synoptic diagram of first embodiment
Fig. 3 is a pyrometric cone furnace structure synoptic diagram
Fig. 4 is the synoptic diagram of second embodiment
5. embodiment:
Below in conjunction with accompanying drawing shown in the embodiment, the invention will be further described.
Example of method and apparatus of the present invention such as Fig. 2, horizontally rotate and draw the awl system schematic, system is installed on the support 12, because two groups of gears 14 about adopting motor 1 and unified transmission shaft 2 to drive, making the tensile axis 7 that is arranged in bar 9 right sides and the stationary shaft 11 in left side is that maintenance is rotated synchronously, thereby when making optical fiber bar 9 rotations that are fixed as one by jig 8 and 7,11 two axles, the bar two ends do not have moment of torsion, thus eliminated the light cone transitive graph as the time issuable skew.Draw refreshing axle 7 except that rotatable, along continuous straight runs slides simultaneously, and load acts on through guide wheel 5 by traction rope 6 and draws refreshing axle 7.According to the demonstration of transmitter 13, adjust the size of load 4, axial tension when promptly may command is drawn awl.
For reaching the purpose that once draws two same specification light cone blanks, require in drawing the awl process, the middle part of dumbbell shaped awl base is aimed at the center, high-temperature zone in the pyrometric cone stove all the time.The present invention has designed the stove car that is positioned on the track, is with the half way stochastic system, as the mark 3 of 2 kinds in accompanying drawing.Pyrometric cone stove 10 is placed on the stove car, and along with the optical fiber bar is elongated Δ L, the awl corresponding displacement in base stage casing is Δ L/2, and the also mobile thereupon Δ L/2 of stove car makes the center, high-temperature zone in the pyrometric cone stove aim at the middle part that dumbbell shaped is bored base all the time, guarantees the symmetry of awl base.
Another key that draws light cone is that promptly the small end cone angle is generally between 40 °-65 ° because the light cone height is suitable with outside diameter.Therefore the present invention takes multi-stage type, independent temperature control, thermograde pyrometric cone stove.As shown in Figure 3, the pyrometric cone stove is a symmetrical structure, and the axial temperature field is normal distribution in the stove.Shown in thermograde pyrometric cone furnace accretion composition among Fig. 3, the interior axial temperature of stove section heater strip 15,19 outside the venue adopts temperature controls, and 20 pairs of burner hearth two ends of temperature regulating device temperature is controlled; Inner segment heater strip 16,18 adopts another control is blunt and tactless to be controlled the regional temperature between burner hearth two ends and the stage casing; Stage casing heater strip 17 adopts the 3rd temperature regulating device that burner hearth stage casing temperature is controlled; Sail speed, make cone angle reach design requirements by changing high-temperature zone, stage casing thermograde and cooperating the control stretching magnitude of load to change sky.
Another example of method and apparatus of the present invention such as Fig. 4 horizontally rotate and draw the awl system schematic, the difference of native system and Fig. 2 is that the rotating shaft at optical fiber bar two ends is the tensile axis that can move horizontally simultaneously, be fixed rotating shaft 11 among Fig. 2 be changed to can horizontal slip left tensile axis 7, left side load 4 behind left guide wheel 5, acts on left tensile axis 7 by traction rope 6.Two ends add same load, make in drawing the awl process bar two ends equably to the dual-side rotation, and move on the limit, and the pyrometric cone stove be fixed on the support 3, do not move, but the middle part of dumbbell shaped awl base is aimed at the center, high-temperature zone in the pyrometric cone stove all the time.
Vertically draw the awl method no matter be, still horizontally rotate the awl method of drawing, all need pass through the whole preheating of light pricker bar, local heating to softening, stretching are reached slow temperature-fall period subsequently, light pricker bar with same specification draws the same specification light cone, two kinds of method required times are very nearly the same, draw the awl method once can pull into two same specification awl bases owing to horizontally rotate, and vertically draw the awl method once can only pull into a right cone base, so the present invention raises the efficiency about one times than traditional method.Again because of the stretched vertically method, the bar upper and lower end all will be reserved one section part that is used to be installed when drawing awl, the excision of having in the end most of this part, and pull into a right cone base, discard two joint stub bars, but pull into two awl bases, the middle waist footpath of dumbbell shaped awl base need only be slightly less than the light cone end diameter and get final product, be that small end palpus cut-out is few, in fact draw one section stub bar of an awl base waste gas, more vertically draw the awl method can save one section stub bar.
According to the foregoing description accompanying drawing, can draw out the fiber light cone of following specification:
Production specification: φ 4-100mm
Filament diameter: 6-200 μ m
Awl ratio: 1.0-5.0
Claims (4)
1, a kind of method of drawing optical fiber light cone, it is characterized in that comprising the following steps: earlier the whole slowly heating of Optical Fiber Composite silk rod that one is in horizontality and does not stop along the axle of Optical Fiber Composite silk rod self to rotate, after treating that it reaches annealing temperature, begin Optical Fiber Composite silk rod stage casing is further heated and imposed axial tension, make stage casing local softening part gradually by drawing-down, after reaching certain size, reduce pulling force, stop the stage casing heating, and begin whole slow cooling cooling, finally make Optical Fiber Composite silk rod become the symmetric dumbbell shaped blank in two ends, promptly a pair of optical fiber cone blank.
2, as the method in the claim 1, adopt multi-stage type, independent temperature control, the thermograde pyrometric cone stove of symmetrical structure, the stage casing forms temperature field certain gradient, that be normal distribution vertically, makes the symmetric dumbbell shaped blank in final formation two ends.
3, as the method in the claim 2, by to the control of thermograde and pulling force vertically, make the tapering of optical fiber cone reach desirable determined value.
4, as the method in the claim 2, use described pyrometric cone stove, optical fiber cone blank stage casing surface temperature peak value can arbitrarily be adjusted between 0-300 ℃ than both sides basal temperature difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011345357A CN1180998C (en) | 2001-11-06 | 2001-11-06 | Optical fiber cone drawing technology and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011345357A CN1180998C (en) | 2001-11-06 | 2001-11-06 | Optical fiber cone drawing technology and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1349110A CN1349110A (en) | 2002-05-15 |
| CN1180998C true CN1180998C (en) | 2004-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011345357A Expired - Fee Related CN1180998C (en) | 2001-11-06 | 2001-11-06 | Optical fiber cone drawing technology and equipment |
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| Country | Link |
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| CN (1) | CN1180998C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056041A (en) * | 2017-05-03 | 2017-08-18 | 江苏斯德雷特通光光纤有限公司 | A kind of method that prefabricated rods draw bipyramid |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159510B (en) * | 2008-09-19 | 2014-03-05 | 普睿司曼股份公司 | Process for manufacturing microstructured optical fibre and method and system for on-line control of microstructured optical fibre |
| CN101819295B (en) * | 2010-04-16 | 2011-09-28 | 广州宏晟光电科技有限公司 | Rotating and twisting device of optical fiber image inverter |
| CN103235365B (en) * | 2013-03-22 | 2014-12-31 | 清华大学 | Optical fiber bidirectional multi-fire-head control system |
| CN104150761B (en) * | 2014-07-18 | 2016-05-04 | 山西长城微光器材股份有限公司 | Diameter 150mm optical taper cone shaped device and method |
| CN108254228A (en) * | 2017-11-30 | 2018-07-06 | 彩虹（合肥）液晶玻璃有限公司 | A kind of glass fibre device for making and preparation method |
| CN109683329A (en) * | 2019-01-08 | 2019-04-26 | 深圳市讯泉科技有限公司 | The laser system of cone is drawn for optical fiber and draws cone system |
| CN112748495B (en) * | 2021-02-03 | 2022-05-20 | 厦门大学 | Device and method for preparing low-loss high-strength tapered optical fiber |
-
2001
- 2001-11-06 CN CNB011345357A patent/CN1180998C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056041A (en) * | 2017-05-03 | 2017-08-18 | 江苏斯德雷特通光光纤有限公司 | A kind of method that prefabricated rods draw bipyramid |
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| Publication number | Publication date |
|---|---|
| CN1349110A (en) | 2002-05-15 |
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Granted publication date: 20041222 Termination date: 20111106 |