CN113998879B - Manufacturing method of preform and optical fiber - Google Patents
Manufacturing method of preform and optical fiber Download PDFInfo
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- CN113998879B CN113998879B CN202111161142.2A CN202111161142A CN113998879B CN 113998879 B CN113998879 B CN 113998879B CN 202111161142 A CN202111161142 A CN 202111161142A CN 113998879 B CN113998879 B CN 113998879B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000013307 optical fiber Substances 0.000 title claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 79
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000005554 pickling Methods 0.000 claims abstract description 3
- 239000011521 glass Substances 0.000 claims description 32
- 238000005491 wire drawing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Classifications
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- 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
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
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- 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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
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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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- 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)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The application discloses a manufacturing method of a preform and an optical fiber, wherein the manufacturing method of the preform comprises the following steps: 1) Respectively placing the two sleeves on the rotary clamping seat; 2) Heating the sleeve to weld the ends of the two sleeves together; 3) Controlling the two rotary clamping seats to be far away from each other, so that the welding ends of the two sleeves form hollow conical parts which are connected with each other; 4) Cutting off the two connected conical parts through a cutting mechanism; 5) Removing the sleeve from the rotary clamping seat, and cutting off the end part of the conical part after the conical part is cooled; 6) And (3) pickling and drying the sleeve, inserting the core rod into the sleeve, and enabling the end part of the core rod to be positioned at the conical structure to form the prefabricated rod. According to the manufacturing method, when the conical parts are not cooled, the cutting mechanism cuts the two connected conical parts from the middle, so that the sleeve can be separated from the rotary clamping seat, the conical parts do not need to be cooled, and the effective utilization rate of equipment can be effectively improved.
Description
Technical Field
The invention relates to the field of optical fiber preforms, in particular to a manufacturing method of a preform and an optical fiber.
Background
The sleeve method has the characteristics of high production efficiency and low cost. In actual operation, a tail pipe is welded at one end of the sleeve, then the mandrel is inserted into the sleeve through the tail pipe to form a preformed rod, the preformed rod formed by combining the sleeve and the mandrel is sent to a wire drawing furnace for wire drawing, and a clamping device above the wire drawing furnace clamps the tail pipe during wire drawing.
In actual production, in order to facilitate the wire drawing operation, one end of the sleeve 2 needs to be processed into the conical portion 1, as shown in fig. 1, two sleeves 2 which are horizontally arranged are usually installed on a machine tool, the ends of the two sleeves 2 are welded and then are separated, the two sleeves 2 form a hollow conical portion 1, the small diameter ends of the two conical portions 1 are connected, and after natural cooling, a worker cuts off the connection part of the two conical portions through a cutter.
According to the existing processing method, after the taper part is pulled out, the sleeve needs to be naturally cooled for a long time, and then the sleeve can be cut, so that the machine tool is occupied for a long time, and the use efficiency of the machine tool is greatly reduced.
Disclosure of Invention
The present invention addresses the above-described problems by providing a preform manufacturing method and an optical fiber.
The technical scheme adopted by the invention is as follows:
a method of manufacturing a preform, comprising the steps of:
1) Respectively placing the two sleeves on two rotary clamping seats arranged coaxially;
2) The two sleeves are driven to be close to each other by the rotary clamping seat, and the ends of the two sleeves are welded together by heating the sleeves through the blowtorch;
3) Controlling the two rotary clamping seats to be far away from each other, so that the welding ends of the two sleeves form hollow conical parts which are connected with each other;
4) Cutting the two connected conical parts from the middle through a cutting mechanism;
5) Removing the sleeve from the rotary clamping seat, and cutting off the end part of the conical part after the conical part is cooled to enable the end part of the conical part to be provided with an opening;
6) And (3) pickling and drying the sleeve, inserting the core rod into the sleeve, and enabling the end part of the core rod to be positioned at the conical structure to form the prefabricated rod.
According to the manufacturing method, when the conical parts are not cooled, the cutting mechanism cuts the two connected conical parts from the middle, so that the sleeve can be separated from the rotary clamping seat, the conical parts do not need to be cooled, and the effective utilization rate of equipment can be effectively improved compared with the prior method.
In one embodiment of the present invention, the steps 1) to 4) are performed by a tapering apparatus, and the tapering apparatus includes:
a frame;
the two rotary clamping seats are slidably arranged on the frame and are used for clamping the sleeve and driving the sleeve to rotate, and the rotary clamping seats can reciprocate along the length direction of the base frame;
the blast lamp is slidably arranged on the frame, can reciprocate along the length direction of the base frame and is used for heating the sleeve; and
the cutting mechanism is arranged on the frame and used for cutting off the two connected conical parts;
the shutdown mechanism includes two sets of shutdown components that set up about rotatory cassette axis symmetry, shutdown components includes:
the cutting blade comprises two inclined planes which are obliquely intersected, and the intersection of the two inclined planes is a cutting edge;
two glass sheets respectively arranged on two inclined planes of the cutting blade, wherein the glass sheets can be separated from the inclined planes; and
the telescopic element is connected with the cutting blade and is used for driving the cutting blade to be close to or far away from the conical part;
when the cutting mechanism performs cutting operation, the cutting edges of the two cutting blades are contacted, and the edges of the two corresponding glass sheets are mutually abutted.
The working principle of the cutting mechanism is as follows: under the heating rotation state, two rotatory cassette keep away from each other, make the butt fusion end of two sheathed tube form interconnect's hollow cone portion, then shutdown mechanism work, make two cutting blade through telescopic element, be close to each other, finally two cutting edge contacts and accomplish the shutdown operation, and the border of corresponding two glass pieces is mutually supported, form the V-arrangement, cone portion department of cutting can be in the same place with two glass piece adhesion this moment, control rotatory cassette further keep away from each other, the glass piece breaks away from on the inclined plane under the drive of cone portion.
The cutting mechanism can cut under the high-temperature state of the conical part, can be reliably separated, and finally can enable the sleeve to be moved out of the rotary clamping seat as soon as possible, so that the utilization efficiency of the rotary clamping seat is improved.
In an embodiment of the present invention, the telescopic element is horizontally disposed, and the telescopic element is an air cylinder or an electric push rod.
In one embodiment of the present invention, a limiting structure is disposed between the glass sheet and the cutting blade, the limiting structure includes a bump disposed on the cutting blade and a groove disposed on the cutting blade, and the bump is embedded in the corresponding groove.
The glass sheet can be limited by matching the convex blocks and the grooves, and the glass sheet is prevented from falling from the inclined plane.
In one embodiment of the present invention, a channel is provided on the cutting blade, one end of the channel extends to the inclined plane to form a through hole, the other end of the channel is connected with a first air pipe and a second air pipe, the first air pipe is used for connecting a vacuum pump to enable the glass sheet to be adsorbed on the inclined plane under negative pressure, and the second air pipe is used for connecting an air pump to break the negative pressure adsorption state of the glass sheet.
In one embodiment of the present invention, the end of the cutting blade facing away from the blade edge has a first mounting hole for mounting the first air tube and a second mounting hole for mounting the second air tube.
In one embodiment of the present invention, the glass sheet has a bump thereon, the bump has an outer diameter smaller than an inner diameter of the through hole, and the bump is embedded in the through hole.
In one embodiment of the present invention, the tapering device further includes a conveying mechanism, where the conveying mechanism is used for conveying the sleeve into the corresponding rotary clamping seat and removing the sleeve from the rotary clamping seat; the conveying mechanism comprises:
the first mounting frame is arranged on one side of the frame and can move up and down;
a plurality of support rollers which are arranged at intervals and in parallel, wherein the support rollers are rotatably arranged on the first mounting frame and are used for supporting and limiting the sleeve;
the driving motor is used for driving the supporting roller to rotate;
the lifting element is connected with the first mounting frame and used for driving the first mounting frame to move up and down, the first mounting frame is provided with a conveying working position and an avoidance working position, when the conveying working position is carried, the axis of the sleeve arranged on the supporting roller is coincident with the axis of the rotary clamping seat, when the avoidance working position is carried out, the first mounting frame moves downwards, and when the rotary clamping seat moves, the rotary clamping seat does not interfere with the conveying mechanism.
The support roller that this application was adjusted through can be from top to bottom carries the sleeve pipe, makes sleeve pipe can convenient and fast insert rotatory cassette, and after processing is accomplished, also can be quick break away from uncooled sleeve pipe from rotatory cassette, for prior art, can effectively improve machining efficiency.
In one embodiment of the present invention, the device further includes a buffer mechanism, the buffer mechanism is in butt joint with the output mechanism and is used for receiving the processed sleeve, and the buffer mechanism includes:
a second mounting frame;
and the support rollers are arranged at intervals and in parallel and rotatably mounted on the second mounting frame and used for supporting and limiting the sleeve.
The processed and uncooled sleeve can be stored through the buffer mechanism, so that the cooperation of a new sleeve and the conveying mechanism is not affected.
The application also discloses an optical fiber obtained by drawing a preform, which is produced by the method for producing a preform as described above.
The beneficial effects of the invention are as follows: according to the manufacturing method, when the conical parts are not cooled, the cutting mechanism cuts the two connected conical parts from the middle, so that the sleeve can be separated from the rotary clamping seat, the conical parts do not need to be cooled, and the effective utilization rate of equipment can be effectively improved compared with the prior method.
Description of the drawings:
FIG. 1 is a schematic view of the thickness of a cone formed by two sleeves according to the prior art;
FIG. 2 is a schematic view showing a part of the construction of the tapering apparatus of embodiment 1;
FIG. 3 is a schematic view of the bevel of FIG. 2 with a glass sheet disposed thereon;
FIG. 4 is an enlarged view at A of FIG. 2;
FIG. 5 is an enlarged view at B of FIG. 3;
FIG. 6 is a schematic view of two cutting blades after contact;
FIG. 7 is a schematic view of the glass sheet after it has been separated from the bevel;
FIG. 8 is a schematic view showing a part of the construction of a tapering apparatus of embodiment 2;
fig. 9 is a schematic diagram of a caching mechanism.
The reference numerals in the drawings are as follows:
1. a taper portion; 2. a sleeve; 3. rotating the clamping seat; 4. a cutting mechanism; 5. cutting off the assembly; 6. a cutting blade; 7. an inclined plane; 8. a blade; 9. a glass sheet; 10. a telescoping member; 11. a through hole; 12. A first mounting hole; 13. a second mounting hole; 15. a conveying mechanism; 16. a first mounting frame; 17. supporting rollers; 18. a lifting element; 19. a buffer mechanism; 20. and a second mounting frame.
The specific embodiment is as follows:
the present invention will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 2 to 7, a method for manufacturing a preform, comprising the steps of:
1) Two sleeves 2 are respectively placed on two rotary clamping seats 3 which are coaxially arranged;
2) The two sleeves 2 are driven to approach each other by the rotary clamping seat 3, and the ends of the two sleeves 2 are welded together by heating the sleeves 2 through the blowtorch;
3) The two rotary clamping seats 3 are controlled to be far away from each other, so that the welding ends of the two sleeves 2 form hollow conical parts which are connected with each other;
4) Cutting the two connected tapered portions from the middle by a cutting mechanism 4;
5) Removing the sleeve 2 from the rotary clamping seat 3, and cutting off the end part of the conical part after the conical part is cooled to enable the end part of the conical part to be provided with an opening;
6) The sleeve 2 is pickled and dried, and a mandrel is inserted into the sleeve 2 so that the end of the mandrel is positioned at the tapered structure to form a preform.
In the manufacturing method of the present invention, when the tapered portions are not cooled, the cutting mechanism 4 cuts the two connected tapered portions from the middle, so that the sleeve 2 can be separated from the rotary holder 3, and the tapered portions do not need to be cooled, thereby effectively improving the effective utilization rate of the equipment compared with the conventional method.
As shown in fig. 2 to 7, in the present embodiment, steps 1) to 4) are performed by a tapering apparatus including:
a frame (not shown in the drawing);
the two rotary clamping seats 3 are slidably arranged on the frame and are used for clamping the sleeve 2 and driving the sleeve 2 to rotate, and the rotary clamping seats 3 can reciprocate along the length direction of the base frame;
a torch (not shown) slidably mounted on the frame and reciprocally movable along a length direction of the base frame for heating the sleeve 2; and
a cutting mechanism 4 mounted on the frame for cutting off the two connected taper portions;
the cutting mechanism 4 includes two sets of cutting assemblies 5 that set up symmetrically about the axis of the rotating cartridge 3, and the cutting assemblies 5 include:
a cutting blade 6 comprising two inclined planes 7 which are obliquely intersected, wherein the intersection of the two inclined planes 7 is a cutting edge 8;
two glass sheets 9 respectively provided on the two inclined surfaces 7 of the cutting blade 6, the glass sheets 9 being detachable from the inclined surfaces 7; and
a telescopic element 10 connected with the cutting blade 6 for driving the cutting blade 6 to approach or depart from the taper;
when the cutting mechanism 4 performs a cutting operation, the cutting edges 8 of the two cutting blades 6 are in contact, and the edges of the corresponding two glass sheets 9 are abutted against each other.
The working principle of the cutting mechanism 4 is as follows: under the heating rotation state, two rotatory cassette 3 keep away from each other, make the butt fusion end of two sleeve pipes 2 form interconnect's hollow cone portion, then shutdown mechanism 4 work, make two cutting blade 6 through telescopic element 10, be close to each other, finally two cutting edge 8 contact completion shutdown operations, and the border of two corresponding glass pieces 9 is supported each other and is leaned on, form the V-arrangement, cone portion department of cutting can be in the same place with two glass pieces 9 adhesion this moment, rotatory cassette 3 is further kept away from each other in control, glass piece 9 breaks away from on the inclined plane 7 under the drive of cone portion.
The cutting mechanism 4 can cut under the high-temperature state of the conical part, and is reliably separated, and finally, the sleeve 2 can be moved out of the rotary clamping seat 3 as soon as possible, so that the utilization efficiency of the rotary clamping seat 3 is improved.
In this embodiment, the telescopic element 10 is horizontally arranged, and the telescopic element 10 is a cylinder or an electric push rod.
During practical use, a limiting structure is arranged between the glass sheet 9 and the cutting blade 6, the limiting structure comprises a protruding block arranged on the cutting blade 6 and a groove arranged on the cutting blade 6, and the protruding block is embedded into the corresponding groove. The glass sheet 9 is prevented from falling from the inclined plane 7 by the cooperation of the convex block and the groove to limit.
In this embodiment, as shown in fig. 6 and 7, a channel is provided on the cutting blade 6, one end of the channel extends to the inclined surface 7 to form a through hole 11, the other end of the channel is respectively connected with a first air pipe and a second air pipe, the first air pipe is used for connecting a vacuum pump to enable the glass sheet 9 to be adsorbed on the inclined surface 7 under negative pressure, and the second air pipe is used for connecting an air pump to break the negative pressure adsorption state of the glass sheet 9.
As shown in fig. 7, in the present embodiment, the end of the cutting blade 6 facing away from the blade edge 8 has a first mounting hole 12 for mounting a first air pipe and a second mounting hole 13 for mounting a second air pipe.
As shown in fig. 7, in this embodiment, the glass sheet 9 has a bump thereon, the outer diameter of the bump is smaller than the inner diameter of the through hole 11, and the bump is fitted into the through hole 11.
The embodiment also discloses an optical fiber obtained by drawing a preform rod, and the preform rod is manufactured by the manufacturing method of the embodiment.
Example 2
As shown in fig. 8, this embodiment differs from embodiment 1 in that it further includes a conveying mechanism 15, and the conveying mechanism 15 is used for conveying the sleeve 2 into the corresponding rotary chuck 3 and removing the sleeve 2 from the rotary chuck 3; the conveying mechanism 15 includes:
a first mounting frame 16 provided at one side of the frame to be movable up and down;
a plurality of spaced and parallel support rollers 17, the support rollers 17 being rotatably mounted on the first mounting frame 16 for supporting and defining the sleeve 2;
a driving motor (not shown) for driving the supporting roller 17 to rotate;
the lifting element 18 is connected with the first mounting frame 16 and is used for driving the first mounting frame 16 to move up and down, the first mounting frame 16 is provided with a conveying working position and an avoidance working position, the axis of the sleeve 2 placed on the supporting roller 17 coincides with the axis of the rotary clamping seat 3 when the conveying working position is carried out, and the first mounting frame 16 moves down when the avoidance working position is carried out, and the rotary clamping seat 3 does not interfere with the conveying mechanism 15 when moving.
This application carries sleeve pipe 2 through supporting roller 17 that can adjust from top to bottom, makes sleeve pipe 2 can convenient and fast insert rotatory cassette 3, and after processing is accomplished, also can be quick break away from uncooled sleeve pipe 2 from rotatory cassette 3, for prior art, can effectively improve machining efficiency.
As shown in fig. 9, the tapering device of the present embodiment further includes a buffer mechanism 19, where the buffer mechanism 19 is in butt joint with the output mechanism, and is configured to receive the processed sleeve 2, and the buffer mechanism 19 includes:
a second mounting frame 20;
a plurality of spaced and parallel support rollers 17, the support rollers 17 being rotatably mounted on the second mounting frame 20 for supporting and defining the sleeve 2.
The processed and uncooled sleeve 2 can be stored by the buffer means 19 so that the cooperation of a new sleeve 2 with the transport means 15 is not affected.
In practice, the support roller 17 preferably has an annular recess which engages the side wall of the sleeve 2. The design of the annular recess increases the contact surface and effectively defines the sleeve 2 preventing the sleeve 2 from radially escaping the delivery mechanism 15.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover all equivalent structures as modifications within the scope of the invention, either directly or indirectly, as may be contemplated by the present invention.
Claims (8)
1. A method of manufacturing a preform, comprising the steps of:
1) Respectively placing the two sleeves on two rotary clamping seats arranged coaxially;
2) The two sleeves are driven to be close to each other by the rotary clamping seat, and the ends of the two sleeves are welded together by heating the sleeves through the blowtorch;
3) Controlling the two rotary clamping seats to be far away from each other, so that the welding ends of the two sleeves form hollow conical parts which are connected with each other;
4) When the cone-shaped parts are not cooled, cutting the two connected cone-shaped parts from the middle by a cutting mechanism;
5) Removing the sleeve from the rotary clamping seat, and cutting off the end part of the conical part after the conical part is cooled to enable the end part of the conical part to be provided with an opening;
6) Pickling and drying the sleeve, inserting a core rod into the sleeve, and enabling the end part of the core rod to be positioned at the conical structure to form a prefabricated rod;
the steps 1) to 4) are implemented by a tapering device, and the tapering device comprises:
a frame;
the two rotary clamping seats are slidably arranged on the frame and are used for clamping the sleeve and driving the sleeve to rotate, and the rotary clamping seats can reciprocate along the length direction of the base frame;
the blast lamp is slidably arranged on the frame, can reciprocate along the length direction of the base frame and is used for heating the sleeve; and
The cutting mechanism is arranged on the frame and used for cutting off the two connected conical parts;
the shutdown mechanism includes two sets of shutdown components that set up about rotatory cassette axis symmetry, shutdown components includes:
the cutting blade comprises two inclined planes which are obliquely intersected, and the intersection of the two inclined planes is a cutting edge;
two glass sheets respectively arranged on two inclined planes of the cutting blade, wherein the glass sheets can be separated from the inclined planes; and
the telescopic element is connected with the cutting blade and is used for driving the cutting blade to be close to or far away from the conical part;
when the cutting mechanism performs cutting operation, the cutting edges of the two cutting blades are contacted, and the edges of the two corresponding glass sheets are mutually abutted.
2. The method of manufacturing a preform according to claim 1, wherein the telescopic member is horizontally arranged, and the telescopic member is a cylinder or an electric putter.
3. The method of manufacturing a preform according to claim 2, wherein the cutting blade is provided with a passage, one end of the passage extends to the inclined surface to form a through hole, and the other end of the passage is connected to a first air pipe for connecting a vacuum pump to enable negative pressure suction of the glass sheet on the inclined surface and a second air pipe for connecting an air pump to break the negative pressure suction state of the glass sheet, respectively.
4. The method of manufacturing a preform according to claim 2, wherein the end of the cutting blade facing away from the cutting edge has a first mounting hole for mounting the first air tube and a second mounting hole for mounting the second air tube.
5. The method of manufacturing a preform according to claim 3, wherein the glass sheet has a bump thereon, the bump having an outer diameter smaller than an inner diameter of the through hole, the bump being inserted into the through hole.
6. The method of manufacturing a preform according to claim 2, further comprising a conveying mechanism for feeding the sleeve into and removing the sleeve from the corresponding rotary chuck; the conveying mechanism comprises:
the first mounting frame is arranged on one side of the frame and can move up and down;
a plurality of support rollers which are arranged at intervals and in parallel, wherein the support rollers are rotatably arranged on the first mounting frame and are used for supporting and limiting the sleeve;
the driving motor is used for driving the supporting roller to rotate;
the lifting element is connected with the first mounting frame and used for driving the first mounting frame to move up and down, the first mounting frame is provided with a conveying working position and an avoidance working position, when the conveying working position is carried, the axis of the sleeve arranged on the supporting roller is coincident with the axis of the rotary clamping seat, when the avoidance working position is carried out, the first mounting frame moves downwards, and when the rotary clamping seat moves, the rotary clamping seat does not interfere with the conveying mechanism.
7. The method of manufacturing a preform according to claim 6, wherein the tapering apparatus further comprises a buffer mechanism interfacing with the output mechanism for receiving the finished sleeve, the buffer mechanism comprising:
a second mounting frame;
and the support rollers are arranged at intervals and in parallel and rotatably mounted on the second mounting frame and used for supporting and limiting the sleeve.
8. An optical fiber obtained by drawing a preform obtained by the method for producing a preform according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161142.2A CN113998879B (en) | 2021-09-30 | 2021-09-30 | Manufacturing method of preform and optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111161142.2A CN113998879B (en) | 2021-09-30 | 2021-09-30 | Manufacturing method of preform and optical fiber |
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| CN113998879B true CN113998879B (en) | 2023-04-25 |
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| CN115403262B (en) * | 2022-08-30 | 2023-06-13 | 富通集团有限公司 | Method and equipment for processing preform |
| CN116903243A (en) * | 2023-07-31 | 2023-10-20 | 武汉睿芯特种光纤有限责任公司 | Online sleeve drawing method and optical fiber |
| CN117088604A (en) * | 2023-09-26 | 2023-11-21 | 藤仓烽火光电材料科技有限公司 | A new type of preform cutting device used in the optical fiber preform extending process |
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| CN112645587A (en) * | 2020-12-07 | 2021-04-13 | 中国建筑材料科学研究总院有限公司 | Optical fiber taper and processing device and processing method thereof |
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| US5216731A (en) * | 1991-10-15 | 1993-06-01 | Center For Innovative Technology | Fused biconical taper fiber optic coupler station and fabrication techniques |
| CN102923941B (en) * | 2012-11-29 | 2014-11-19 | 长飞光纤光缆股份有限公司 | Method for tapering optical fiber preform |
| CN106698917B (en) * | 2017-01-09 | 2018-03-13 | 江苏斯德雷特通光光纤有限公司 | A kind of method that prefabricated rods draw bipyramid |
| CN108493750B (en) * | 2018-03-22 | 2020-01-10 | 中国人民解放军国防科技大学 | Manufacturing method of optical fiber end face pump coupler based on sleeve |
| CN113387558B (en) * | 2021-06-30 | 2022-09-23 | 杭州富通通信技术股份有限公司 | Processing technology of preform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553293A (en) * | 2019-01-29 | 2019-04-02 | 江苏通鼎光棒有限公司 | A kind of preform prick-drawing device and corresponding drawing cone method |
| CN112645587A (en) * | 2020-12-07 | 2021-04-13 | 中国建筑材料科学研究总院有限公司 | Optical fiber taper and processing device and processing method thereof |
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| CN113998879A (en) | 2022-02-01 |
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