CN219489839U - Optical fiber perform annealing device - Google Patents
Optical fiber perform annealing device Download PDFInfo
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- CN219489839U CN219489839U CN202320163345.3U CN202320163345U CN219489839U CN 219489839 U CN219489839 U CN 219489839U CN 202320163345 U CN202320163345 U CN 202320163345U CN 219489839 U CN219489839 U CN 219489839U
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- optical fiber
- fiber preform
- gear
- annealing
- shell
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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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- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The utility model relates to an optical fiber preform annealing device, comprising: the support frame is provided with a cylindrical annealing furnace, and a heater is arranged in the annealing furnace; the rotary mechanism is arranged on a supporting plate of the supporting frame and corresponds to the opening end of the annealing furnace, the rotary mechanism comprises a shell and a first driver, the first driver is arranged on the shell and is connected with a first gear through a driving shaft, a plurality of second gears are meshed with the side face of the first gear, the first gear and the second gears are positioned in the shell, the second gears are connected with a suspension shaft, and one end, far away from the second gears, of the suspension shaft is provided with an adapter used for connecting an optical fiber preform. The annealing device for the optical fiber perform can anneal a plurality of optical fiber perform at one time, has small energy consumption and uniformly heats the optical fiber perform.
Description
Technical Field
The utility model relates to the technical field of annealing devices, in particular to an optical fiber preform annealing device.
Background
The production of the optical fiber preform comprises the working procedures of deposition, sintering, annealing, stretching and the like. In the sintering process, gases such as chlorine, helium and the like are introduced, and after the sintering is finished, a certain amount of gases and a great amount of internal stress remain in the optical fiber preform. The existence of a large amount of internal stress can cause cracking of the optical fiber preform in subsequent processing, and fiber breakage is easy to occur during wire drawing; the residual gas can gather during stretching to form a large number of small bubbles, which cause serious quality problems, and the problems can be well solved by annealing. The annealing principle of the optical fiber preform is as follows: at a specific temperature, the internal atomic structure rearranges by thermal motion, thereby releasing the internal stress. Meanwhile, gas molecules remaining in the optical fiber preform may be emitted to the surface by thermal motion. Annealing is a relatively slow process that takes several hours to complete.
The current annealing device mainly takes one optical fiber preform rod annealing at a time, and has low efficiency and high energy consumption; there are some annealing apparatuses capable of annealing a plurality of optical fiber preforms at a time, but when annealing the optical fiber preforms, the annealing apparatus causes stress residues and generates new thermal stress due to uneven heating of the optical fiber preforms when heating because the optical fiber preforms are not located at the center of the annealing furnace.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to provide the optical fiber preform annealing device which can anneal a plurality of optical fiber preforms at one time, has small energy consumption and uniformly heats the optical fiber preforms.
In order to solve the above technical problems, the present utility model provides an annealing device for an optical fiber preform, comprising: the support frame is provided with a cylindrical annealing furnace, and a heater is arranged in the annealing furnace; the rotary mechanism is arranged on a supporting plate of the supporting frame and corresponds to the opening end of the annealing furnace, the rotary mechanism comprises a shell and a first driver, the first driver is arranged on the shell and is connected with a first gear through a driving shaft, a plurality of second gears are meshed with the side face of the first gear, the first gear and the second gears are positioned in the shell, the second gears are connected with a suspension shaft, and one end, far away from the second gears, of the suspension shaft is provided with an adapter used for connecting an optical fiber preform.
In one embodiment of the utility model, a supporting block is arranged between the first gear and the second gear and the shell, and the first gear and the second gear are rotatably connected with the supporting block.
In one embodiment of the utility model, the second gear comprises a protrusion, the protrusion is positioned on one side of the second gear far away from the supporting block, the suspension shaft extends into the protrusion, and a first bolt is arranged on the side wall of the protrusion, and penetrates through the protrusion and the suspension shaft.
In one embodiment of the utility model, a movable ring is slidably and rotatably connected to the side wall of the suspension shaft, and a first cover plate is arranged on one side, close to the annealing furnace, of the movable ring, and the diameter of the first cover plate is larger than the diameter of an opening of the annealing furnace.
In one embodiment of the utility model, the diameter of the adapter is larger than that of the suspension shaft, a blind hole is formed in one side, far away from the suspension shaft, of the adapter, and a second plug pin is arranged on the side wall of the adapter and penetrates through the adapter and the blind hole.
In one embodiment of the utility model, the annealing furnace comprises a shell, the heater is positioned on the inner side of the shell, and a heat insulation plate is arranged between the heater and the shell.
In one embodiment of the utility model, a thermocouple is arranged on the side wall of the heater, and the thermocouple is connected with a controller.
In one embodiment of the utility model, a second driver is arranged at one end, far away from the annealing furnace, of the supporting plate, the output end of the second driver is connected with a screw rod, and a nut of the screw rod is connected with the shell.
In one embodiment of the utility model, the support plate is provided with a sliding rail, and the shell is in sliding connection with the sliding rail.
In one embodiment of the utility model, the open end of the annealing furnace is provided with a second cover plate.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the annealing device for the optical fiber preform, the first driver drives the optical fiber preform to rotate through the first gear and the second gear, and the optical fiber preform can be heated uniformly in the rotating process, so that stress residues are avoided and new thermal stress is generated; the first gears are meshed with the plurality of second gears, so that the optical fiber preform annealing device can anneal a plurality of optical fiber preforms at one time, and the energy consumption is low; through setting up first apron and expansion ring, make optical fiber perform annealing device's heat preservation effect better, also avoided outside debris to drop to the annealing in influencing optical fiber perform annealing quality.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a schematic view showing the structure of an annealing apparatus for an optical fiber preform according to the present utility model;
FIG. 2 is a front sectional view of an optical fiber preform annealing apparatus according to the present utility model;
fig. 3 is a schematic diagram of a meshing structure of the first gear and the second gear in fig. 1.
Description of the specification reference numerals: 1. a support frame; 2. a rotation mechanism; 3. annealing furnace; 4. an optical fiber preform; 11. a support plate; 12. a screw rod; 13. a slide rail; 14. a second driver; 21. a housing; 22. a first driver; 23. a drive shaft; 24. a second gear; 25. a first gear; 26. a suspension shaft; 27. an adapter; 28. a first cover plate; 31. a housing; 32. a thermal insulation board; 33. a heater; 34. a thermocouple; 35. a second cover plate; 241. a support block; 242. a protrusion; 261. a first latch; 262. a movable ring; 271. and a second bolt.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1, an optical fiber preform annealing apparatus of the present utility model includes: the device comprises a support frame 1, wherein a cylindrical annealing furnace 3 is arranged on the support frame 1, and a heater 33 is arranged in the annealing furnace 3; the rotary mechanism 2, rotary mechanism 2 locates on the backup pad 11 of support frame 1 and corresponds with the open end of annealing stove 3, rotary mechanism 2 includes casing 21 and first driver 22, first driver 22 locates on the casing 21 and is connected with first gear 25 through drive shaft 23, first gear 25 side meshing has a plurality of second gears 24, first gear 25 and second gear 24 are located casing 21, second gear 24 is connected with suspension shaft 26, suspension shaft 26 keeps away from the one end of second gear 24 and is equipped with the adapter 27 that is used for connecting optical fiber perform 4.
According to the optical fiber preform annealing device, the first driver 22 drives the first gear 25 to rotate through the driving shaft 23, so that the second gear 24 is driven to rotate, and the adapter 27 is driven to rotate, the optical fiber preform 4 is connected below the adapter 27, so that the optical fiber preform 4 rotates, the optical fiber preform 4 can be heated uniformly in the rotating process, the first gear 25 is meshed with the plurality of second gears 24, and the optical fiber preform annealing device can anneal a plurality of optical fiber preforms 4 at one time, and is low in energy consumption.
Referring to fig. 2, the annealing furnace 3 is fixed inside the support frame 1, and a flat plate is arranged on the upper side of the support frame 1, and the upper end of the annealing furnace 3 extends outwards through the flat plate. The annealing furnace 3 comprises a cylindrical shell 31, and the shell 31 is a metal protection shell. The shell 31 inboard is equipped with heated board 32, and heated board 32 is the quartz wool material, can play the heat preservation effect. The inside of the heat-insulating plate 32 is a cylindrical heater 33, and the heater 33 is a graphite heater, so that the inside can be heated. Thermocouples 34 are provided on the side walls of the heater 33 at positions corresponding to the optical fiber preform 4, and the thermocouples 34 are provided in plurality in the vertical direction. The thermocouple 34 and the heater 33 are respectively in communication with a controller, so that the controller can accurately control the temperature in the annealing furnace 3. In one embodiment, a cylindrical furnace tube is disposed inside the heater 33, and the furnace tube is made of transparent quartz, so that the heater 33 oxidizes and contaminates the optical fiber preform 4 after long-term use, and impurities generated by oxidation of the heater 33 can be prevented from contaminating the optical fiber preform 4 after the furnace tube is disposed inside the heater 33. The top of the open end of the annealing furnace 3 is provided with a second cover plate 35 made of metal, the second cover plate 35 is round, the diameter of the second cover plate is larger than that of the opening of the annealing furnace 3, and the top of the second cover plate 35 is provided with a grab handle. When the annealing furnace 3 is in standby, the second cover plate 35 can be placed at the opening of the annealing furnace 3, so that the heat preservation and the function of preventing foreign matters from falling into the annealing furnace 3 can be realized.
Referring to fig. 1, one side of the support frame 1 includes a support plate 11 protruding upward, and the support plate 11 is disposed perpendicular to the flat plate. The end of the supporting plate 11 far away from the annealing furnace 3 is provided with a second driver 14, the second driver 14 is electrically connected with the controller, the output end of the second driver 14 is connected with one end of the screw rod 12, the other end of the screw rod 12 is connected with the flat plate, and the screw rod 12 is positioned close to the supporting plate 11. Slide rails 13 are symmetrically arranged on the support plate 11 at positions on two sides of the screw rod 12.
Referring to fig. 2 and 3, the rotation mechanism 2 includes a housing 21 and a first driver 22. The housing 21 is formed in a rectangular parallelepiped shape as a whole, and one side of the housing 21 is connected to the nut of the screw 12 and is slidably connected to the slide rail 13, so that the housing 21 can move up and down along the slide rail 13 when the second driver 14 is operated. The first driver 22 is electrically connected with the controller, the first driver 22 is located on the upper side of the shell 21, the first driver 22 is rotationally connected with the first gear 25 through the driving shaft 23, six second gears 24 are meshed with the side face of the first gear 25 at equal intervals, the diameter of the first gear 25 is larger than that of the second gear 24, and the first gear 25 and the second gear 24 are located in the shell 21. A supporting block 241 is arranged between the first gear 25, the second gear 24 and the shell 21, the supporting block 241 is connected with the shell 21, and the first gear 25, the second gear 24 and the supporting block 241 are rotatably connected, so that the first gear 25 and the second gear 24 can rotate on the supporting block 241. The second gear 24 includes a protrusion 242, the protrusion 242 being located on a side of the second gear 24 remote from the support block 241. The second gear 24 is connected with the suspension shaft 26, the upper end of the suspension shaft 26 penetrates through the housing 21, the support block 241 and the second gear 24 in sequence, and the upper end of the suspension shaft 26 extends into the boss 242. The side wall of the protrusion 242 is provided with a first plug 261, and the first plug 261 is inserted from the outside of the side wall of the protrusion 242, sequentially passes through the side wall of the protrusion 242 and the suspension shaft 26 and protrudes from the opposite side of the insertion end, so that the suspension shaft 26 and the protrusion 242 are relatively fixed. A movable ring 262 is slidably and rotatably connected to the side wall of the suspension shaft 26, and the movable ring 262 is a frosted quartz ring. One side of the movable ring 262, which is close to the annealing furnace 3, is connected with a first cover plate 28, the first cover plate 28 is a frosted quartz hole cover plate, the bottom end of the suspension shaft 26 penetrates through the first cover plate 28, and the diameter of the first cover plate 28 is larger than the diameter of an opening of the annealing furnace 3. When the optical fiber preform annealing device works, the first cover plate 28 can cover the opening end of the annealing furnace 3 along with the descending of the rotating mechanism 2, so that the thermal insulation effect is achieved, the movable ring 262 can seal the gap between the suspension shaft 26 and the first cover plate 28, and therefore the tightness of the annealing furnace 3 is improved, and the heat loss is reduced. The adapter 27 is located at the bottom end of the suspension shaft 26, and the diameter of the adapter 27 is larger than that of the suspension shaft 26, so that the first cover plate 28 is blocked by the adapter 27 when sliding down to the bottom of the suspension shaft 26, and cannot be separated from the suspension shaft 26. The adapter 27 is provided with a blind hole on the side remote from the suspension shaft 26. The side wall of the adapter 27 is provided with a second bolt 271, and the second bolt 271 penetrates through the adapter 27 and the blind hole. When the optical fiber preform 4 is connected, the top end of the optical fiber preform 4 is inserted into the blind hole, the second plug 271 is inserted from the outer side of the side wall of the adapter 27, sequentially penetrates through the side wall of the adapter 27 and the optical fiber preform 4 and extends out from the opposite side of the insertion end, so that the optical fiber preform 4 and the adapter 27 are relatively fixed.
When in use, the top end of the optical fiber preform 4 is inserted into the blind hole of the adapter 27, and the optical fiber preform 4 and the adapter 27 are relatively fixed through the second bolt 271; then the second driver 14 drives the rotating mechanism 2 to descend so as to drive the optical fiber preform 4 to descend; as the rotating mechanism 2 descends, the first cover plate 28 covers the opening of the annealing furnace 3, and the suspension shaft 26 and the movable ring 262 slide relatively and continue to descend; when the optical fiber preform 4 descends to a designated position, the first driver 22 drives the first gear 25 to rotate through the driving shaft 23, so as to drive the second gear 24 to rotate, and further drive the optical fiber preform 4 to rotate; simultaneously, the heater 33 is started, and the controller maintains the temperature in the annealing furnace 3 within a set value range through the thermocouple 34; after reaching the time required by annealing, the heating temperature of the heater 33 is reduced, the temperature in the annealing furnace 3 is slowly reduced to the standby temperature, and the heating, cooling and heat preservation processes are automatically controlled by the heating rate, the cooling rate and the heat preservation time which are set on the controller; after the annealing is finished, the second driver 14 drives the rotating mechanism 2 to ascend so as to drive the optical fiber preform 4 to ascend, and after the second driver 14 stops working, an operator can take down the annealed optical fiber preform 4 and cover the second cover plate 35 on the open end of the annealing furnace 3.
According to the annealing device for the optical fiber preform, the first driver 22 drives the optical fiber preform 4 to rotate through the first gear 25 and the second gear 24, and the optical fiber preform 4 can be heated uniformly in the rotating process, so that stress residues are avoided and new thermal stress is generated; the first gears 25 are meshed with the plurality of second gears 24, so that the optical fiber preform annealing device can anneal a plurality of optical fiber preforms 4 at a time, and the energy consumption is low; by arranging the first cover plate 28 and the movable ring 262, the heat preservation effect of the optical fiber preform annealing device is better, and the influence of the external sundries falling into the annealing furnace 3 on the annealing quality of the optical fiber preform 4 is avoided; the release of internal stress is facilitated by the annealing mode of vertical suspension of the optical fiber preform 4.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. An optical fiber preform annealing apparatus, comprising:
the support frame is provided with a cylindrical annealing furnace, and a heater is arranged in the annealing furnace;
the rotary mechanism is arranged on a supporting plate of the supporting frame and corresponds to the opening end of the annealing furnace, the rotary mechanism comprises a shell and a first driver, the first driver is arranged on the shell and is connected with a first gear through a driving shaft, a plurality of second gears are meshed with the side face of the first gear, the first gear and the second gears are positioned in the shell, the second gears are connected with a suspension shaft, and one end, far away from the second gears, of the suspension shaft is provided with an adapter used for connecting an optical fiber preform.
2. The optical fiber preform annealing apparatus according to claim 1, wherein: the first gear, the second gear and the shell are rotatably connected.
3. The optical fiber preform annealing apparatus according to claim 2, wherein: the second gear comprises a protrusion, the protrusion is located on one side, far away from the supporting block, of the second gear, the suspension shaft stretches into the protrusion, a first bolt is arranged on the side wall of the protrusion, and the first bolt penetrates through the protrusion and the suspension shaft.
4. The optical fiber preform annealing apparatus according to claim 2, wherein: the side wall of the suspension shaft is slidably and rotatably connected with a movable ring, a first cover plate is arranged on one side, close to the annealing furnace, of the movable ring, and the diameter of the first cover plate is larger than the diameter of an opening of the annealing furnace.
5. The optical fiber preform annealing apparatus according to claim 4, wherein: the adapter diameter is greater than suspension axle diameter, one side that the adapter kept away from the suspension axle is equipped with the blind hole, the adapter lateral wall is equipped with the second bolt, the second bolt runs through adapter and blind hole.
6. The optical fiber preform annealing apparatus according to claim 1, wherein: the annealing furnace comprises a shell, the heater is positioned at the inner side of the shell, and a heat preservation plate is arranged between the heater and the shell.
7. The optical fiber preform annealing apparatus according to claim 6, wherein: the side wall of the heater is provided with a thermocouple, and the thermocouple is connected with the controller.
8. The optical fiber preform annealing apparatus according to claim 1, wherein: the one end that keeps away from the annealing stove in the backup pad is equipped with the second driver, the output of second driver is connected with the lead screw, the nut and the casing of lead screw are connected.
9. The optical fiber preform annealing apparatus according to claim 8, wherein: the support plate is provided with a sliding rail, and the shell is in sliding connection with the sliding rail.
10. The optical fiber preform annealing apparatus according to claim 1, wherein: and a second cover plate is arranged at the opening end of the annealing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320163345.3U CN219489839U (en) | 2023-02-08 | 2023-02-08 | Optical fiber perform annealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320163345.3U CN219489839U (en) | 2023-02-08 | 2023-02-08 | Optical fiber perform annealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219489839U true CN219489839U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320163345.3U Active CN219489839U (en) | 2023-02-08 | 2023-02-08 | Optical fiber perform annealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219489839U (en) |
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2023
- 2023-02-08 CN CN202320163345.3U patent/CN219489839U/en active Active
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