CN108640502B - Method for manufacturing optical fiber - Google Patents
Method for manufacturing optical fiber Download PDFInfo
- Publication number
- CN108640502B CN108640502B CN201810833949.8A CN201810833949A CN108640502B CN 108640502 B CN108640502 B CN 108640502B CN 201810833949 A CN201810833949 A CN 201810833949A CN 108640502 B CN108640502 B CN 108640502B
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- CN
- China
- Prior art keywords
- optical fiber
- auxiliary rod
- rod
- fiber preform
- frame
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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
- C03B37/02736—Means for supporting, rotating or feeding the tubes, rods, fibres or filaments to be drawn, e.g. fibre draw towers, preform alignment, butt-joining preforms or dummy parts during feeding
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a manufacturing method of an optical fiber, which is characterized by comprising the following steps: 1) connecting the optical fiber preform with the auxiliary rod; 2) carrying out wire drawing operation on the connected optical fiber preform; 3) coating and curing the optical fiber filaments; wherein, the step 1) is connected with the auxiliary rod connecting device through the optical fiber perform; optical fiber perform and auxiliary rod connecting device includes: the device comprises an auxiliary rod connecting frame used for installing an auxiliary rod, a movable frame, a rod length adjusting assembly used for adjusting the relative position of the movable frame relative to the auxiliary rod connecting frame, two movable clamping jaws used for clamping the optical fiber perform rod from two sides, two clamping jaw arms, a spring and a taper ring sleeve. The invention has the beneficial effects that the optical fiber preform and the auxiliary rod are not required to be welded, so that the phenomenon that the traditional welding mode releases internal stress after being heated to cause deflection or fracture and influence on the optical fiber manufacturing is avoided.
Description
Technical Field
The present invention relates to a method for manufacturing an optical fiber.
Background
An optical fiber preform is a material preform that can be used to draw an optical fiber, and is a core raw material for manufacturing a silica-based optical fiber. When an optical fiber is drawn from an optical fiber preform, an auxiliary rod is required to be attached to one end of the optical fiber preform to assist in drawing the optical fiber. The conventional connection method of the auxiliary rod is fixed to one end of the optical fiber preform by welding. However, internal stress may exist at the welding position of the auxiliary rod and the optical fiber preform, and the internal stress release is accelerated by the hot melting high temperature in the process of hot melting the optical fiber preform, so that the optical fiber preform and the auxiliary rod are deflected or even broken.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for manufacturing an optical fiber without welding an auxiliary rod.
In order to achieve the above object, the present invention adopts the following technical solutions:
a method of manufacturing an optical fiber comprising the steps of:
1) connecting the optical fiber preform with the auxiliary rod;
2) carrying out wire drawing operation on the connected optical fiber preform;
3) coating and curing the optical fiber filaments;
wherein, the step 1) is connected with the auxiliary rod connecting device through the optical fiber perform;
optical fiber perform and auxiliary rod connecting device includes: the device comprises an auxiliary rod connecting frame for mounting an auxiliary rod, a movable frame, a rod length adjusting assembly for adjusting the relative position of the movable frame relative to the auxiliary rod connecting frame, two movable clamping jaws for clamping the optical fiber preform rod from two sides, two clamping jaw arms, a spring and a conical ring sleeve; the movable clamping jaw is fixed to the clamping jaw arm; the clamping jaw arm is connected to the movable frame in a sliding manner; the conical ring sleeve is sleeved on the periphery of the clamping claw arm; the conical ring sleeve is provided with an inclined plane matched with the clamping jaw arm; the spring applies acting force to the conical ring sleeve to enable the conical ring sleeve to drive the two clamping claw arms to move towards the direction close to each other; the rod length adjusting assembly is connected with the movable frame and the auxiliary rod connecting frame; the rod length adjustment assembly comprises a sleeve and a bolt; the sleeve is provided with an internal thread matched with the bolt; the sleeve is fixed to the movable frame; the auxiliary rod connecting frame is provided with a mounting plate through hole for the rod part of the bolt to pass through; the bolt penetrates through the through hole of the mounting plate and is mounted to the auxiliary rod connecting frame; the bolt is connected with the sleeve through threads.
Further, the optical fiber preform and auxiliary rod connecting device comprises a plurality of rod length adjusting assemblies; the plurality of rod length adjustment assemblies are evenly distributed around the center line of the auxiliary rod connecting frame.
Further, the optical fiber preform and auxiliary rod connecting apparatus includes 4 rod length adjusting assemblies.
Further, the auxiliary rod connecting frame comprises a connecting column and a mounting plate; the connecting column is fixed to the mounting plate; the connecting column is provided with a mounting hole for inserting the auxiliary rod; the mounting plate forms a mounting plate through hole.
Furthermore, the connecting device for the optical fiber preform rod and the auxiliary rod further comprises a fastening bolt; the fastening bolt penetrates through the auxiliary rod and the connecting column to fix the auxiliary rod to the connecting column.
Further, the hole depth direction of the mounting plate through hole is parallel to the hole depth direction of the mounting hole.
Furthermore, a sliding slot hole is formed on the movable frame; one end of each of the two clamping claw arms extends into the sliding groove hole from the two ends of the sliding groove hole respectively and can slide in the sliding groove hole.
Further, the optical fiber preform and auxiliary rod connecting device comprises a plurality of springs; the number of springs is the same as the number of rod length adjustment assemblies.
Furthermore, the auxiliary rod connecting frame and the movable frame are both provided with positioning columns for fixing the position of the spring.
Further, the manufacturing method of the optical fiber further comprises the steps of:
overcoming the elasticity of the spring to move the conical ring sleeve so as to open the movable clamping jaw;
the spring drives the taper ring sleeve to move so as to drive the movable clamping jaw to clamp the optical fiber preform;
securing an auxiliary rod to the auxiliary rod attachment frame;
installing the optical fiber preform into an optical fiber hot melting furnace;
the bolt of the rod length adjusting assembly is rotated so as to adjust the length of the rod length adjusting assembly to make the optical fiber preform upright.
The invention has the beneficial effect that the optical fiber perform can be ensured not to deviate by adjusting the rod length adjusting assembly. The optical fiber preform and the auxiliary rod are not required to be welded, the problem that the traditional welding mode is deflected or broken due to internal stress release after being heated is solved, and the phenomenon that the deflection is caused due to stress release and the optical fiber processing is finally influenced is avoided.
Drawings
FIG. 1 is a flow chart of a method of manufacturing an optical fiber of the present invention;
FIG. 2 is a schematic view of an apparatus for connecting an optical fiber preform to an auxiliary rod in the method for manufacturing an optical fiber of FIG. 1;
FIG. 3 is a bottom view of a taper ring of the optical fiber preform-to-auxiliary rod connecting device of FIG. 2;
FIG. 4 is a cross-sectional view of a taper ring of the optical fiber preform-to-auxiliary rod connecting apparatus of FIG. 2;
fig. 5 is a plan view of a subsidiary rod coupling frame of the optical fiber preform-to-subsidiary rod coupling apparatus of fig. 2.
The optical fiber preform and auxiliary rod connecting device 100, the auxiliary rod connecting frame 10, the connecting column 11, the mounting plate 12, the mounting plate through hole 13, the mounting hole 111, the movable frame 20, the sliding groove hole 21, the rod length adjusting assembly 30, the sleeve 31, the bolt 32, the movable clamping jaw 40, the clamping jaw arm 50, the spring 60, the conical ring sleeve 70, the inclined plane 71, the fastening bolt 80 and the positioning column 90.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 5, a method of manufacturing an optical fiber includes the steps of:
1) connecting the optical fiber preform with the auxiliary rod;
2) carrying out wire drawing operation on the connected optical fiber preform;
3) coating and curing the optical fiber filaments;
wherein, the step 1) is connected with the auxiliary rod connecting device through the optical fiber perform;
as shown in fig. 1 to 5, the connecting device 100 for an optical fiber preform and an auxiliary rod is applied to the manufacturing method of the optical fiber.
The optical fiber preform and auxiliary rod connecting device 100 comprises an auxiliary rod connecting frame 10, a movable frame 20, a rod length adjusting assembly 30, two movable clamping jaws 40, two clamping jaw arms 50, a spring 60 and a taper ring sleeve 70. The auxiliary rod attaching bracket 10 is used to install an auxiliary rod. The rod length adjusting assembly 30 is used to adjust the relative position of the movable frame 20 with respect to the auxiliary rod connection frame 10. Rotating the bolt 32 of the rod length-adjusting assembly 30 enables adjusting the length of the rod length-adjusting assembly 30 so that the optical fiber preform is in a vertical state. The two movable jaws 40 grip the optical fiber preform from both sides.
As a specific embodiment, movable jaw 40 is fixed to jaw arm 50. Jaw arm 50 is slidably connected to movable frame 20. The taper ring sleeve 70 is sleeved on the periphery of the jaw arm 50. The rod length adjusting assembly 30 connects the movable frame 20 and the auxiliary rod connection frame 10. The rod length adjustment assembly 30 includes a sleeve 31 and a bolt 32. The sleeve 31 is formed with an internal thread to be fitted with the bolt 32. The sleeve 31 is fixed to the movable frame 20. The auxiliary rod attaching bracket 10 is formed with a mounting plate through hole 13 through which the shaft portion of the bolt 32 passes. The bolt 32 is mounted to the auxiliary rod attachment frame 10 through the mounting plate through-hole 13. The bolt 32 is threadedly coupled to the sleeve 31. Taper ring sleeve 70 is formed with a ramped surface 71 that engages jaw arm 50. The spring 60 applies a force to the collar 70 that causes the collar 70 to drive the two jaw arms 50 toward each other.
Specifically, the spring 60 applies a pressure to the cone collar 70 that urges the cone collar 70 downward. The downward movement of the collar 70 drives the inclined surface 71 to move downward, and the inclined surface 71 pushes the two claw arms 50 engaged with the inclined surface 71 to move toward each other. Thereby causing the movable clamping jaw 40 fixed to the clamping jaw arm 50 to clamp the optical fiber preform. When the optical fiber preform needs to be dismounted, the force which overcomes the pressure of the spring 60 and is upwards applied to the taper ring sleeve 70 is manually applied, so that the taper ring sleeve 70 is driven to move upwards, and the inclined surface 71 is driven to move upwards. The urging force of the inclined surface 71 against the claw arm 50 gradually decreases until the claw arm 50 is disengaged. The two jaw arms 50 move away from each other under their own resilience, thereby driving the movable jaw 40 to disengage from the optical fiber preform. Thereby removing the optical fiber preform.
In a preferred embodiment, the movable frame 20 is formed with a slide slot hole 21. One end of each of the two claw arms 50 extends into the slide groove hole 21 from both ends of the slide groove hole 21 and can slide in the slide groove hole 21.
As a preferred embodiment, the optical fiber preform-to-cane connecting apparatus 100 includes a plurality of rod length adjusting assemblies 30. A plurality of rod length adjusting assemblies 30 are uniformly distributed around the center line of the auxiliary rod link 10 to enable precise adjustment of the position of the movable frame 20 with respect to the auxiliary rod link 10.
As a preferred embodiment, the optical fiber preform-to-cane connecting apparatus 100 includes 4 rod length adjusting assemblies 30.
As a preferred embodiment, the auxiliary rod attachment frame 10 includes an attachment post 11 and a mounting plate 12. The connecting column 11 is fixed to the mounting plate 12. The connection post 11 is formed with a mounting hole 111 into which the auxiliary rod is inserted. The mounting plate 12 forms a mounting plate through hole 13 through which the shank of the bolt passes.
In a preferred embodiment, the optical fiber preform-to-cane connecting apparatus 100 further includes a fastening bolt 80. The fastening bolt 80 passes through the auxiliary bar and the connection column 11, fixing the auxiliary bar to the connection column 11.
In a preferred embodiment, the mounting plate through hole 13 has a hole depth direction parallel to the hole depth direction of the mounting hole 111.
As a preferred embodiment, the optical fiber preform-to-cane connecting apparatus 100 includes a plurality of springs 60. The number of springs 60 is the same as the number of rod-length adjusting assemblies 30.
As a preferred embodiment, the auxiliary rod connection frame 10 and the movable frame 20 are each formed with a positioning column 90 for fixing the position of the spring 60.
Based on the above, the method for manufacturing an optical fiber further comprises the steps of:
the spring 60 drives the taper ring sleeve 70 to move so as to drive the movable clamping jaws 40 on the clamping jaw arms 50 to move towards each other to clamp the optical fiber preform;
fixing the auxiliary rod to the auxiliary rod connection frame 10;
installing the optical fiber preform into an optical fiber hot melting furnace;
the bolt 32 of the rod length adjusting assembly 30 is rotated to adjust the length of the rod length adjusting assembly 30 such that the optical fiber preform is erected.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (7)
1. A method of manufacturing an optical fiber, comprising the steps of:
1) connecting the optical fiber preform with the auxiliary rod;
2) carrying out wire drawing operation on the connected optical fiber preform;
3) coating and curing the optical fiber filaments;
wherein, the step 1) is connected with the auxiliary rod connecting device through the optical fiber perform;
the optical fiber perform and auxiliary rod connecting device comprises: the device comprises an auxiliary rod connecting frame for mounting an auxiliary rod, a movable frame, a rod length adjusting assembly for adjusting the relative position of the movable frame relative to the auxiliary rod connecting frame, two movable clamping jaws for clamping the optical fiber preform rod from two sides, two clamping jaw arms, a spring and a conical ring sleeve; the movable jaw is fixed to the jaw arm; the clamping jaw arm is connected to the movable frame in a sliding mode; the conical ring sleeve is sleeved on the periphery of the clamping claw arm; the conical ring sleeve is provided with an inclined plane matched with the clamping jaw arm; the spring applies acting force to the conical ring sleeve to enable the conical ring sleeve to drive the two clamping claw arms to move towards the direction close to each other; the rod length adjusting assembly is connected with the movable frame and the auxiliary rod connecting frame; the rod length adjustment assembly comprises a sleeve and a bolt; the sleeve is provided with an internal thread matched with the bolt; the sleeve is fixed to the movable frame; the auxiliary rod connecting frame is provided with a mounting plate through hole for the rod part of the bolt to pass through; the bolt penetrates through the through hole of the mounting plate and is mounted to the auxiliary rod connecting frame; the bolt is connected with the sleeve through threads;
the auxiliary rod connecting frame comprises a connecting column and a mounting plate; the connecting column is fixed to the mounting plate; the connecting column is provided with a mounting hole for inserting an auxiliary rod; the mounting plate forms the mounting plate through hole;
the connecting device for the optical fiber perform rod and the auxiliary rod further comprises a fastening bolt; the fastening bolt penetrates through the auxiliary rod and the connecting column to fix the auxiliary rod to the connecting column;
the hole depth direction of the mounting plate through hole is parallel to the hole depth direction of the mounting hole.
2. The method of manufacturing an optical fiber according to claim 1,
the optical fiber preform rod and auxiliary rod connecting device comprises a plurality of rod length adjusting assemblies; the plurality of rod length adjustment assemblies are evenly distributed around a center line of the auxiliary rod connecting frame.
3. The method of manufacturing an optical fiber according to claim 1,
the optical fiber preform and auxiliary rod connecting device comprises 4 rod length adjusting assemblies.
4. The method of manufacturing an optical fiber according to claim 1,
the movable frame is provided with a sliding slot hole; one end of each of the two clamping claw arms extends into the sliding groove hole from two ends of the sliding groove hole respectively and can slide in the sliding groove hole.
5. The method of manufacturing an optical fiber according to claim 1,
the optical fiber preform rod and auxiliary rod connecting device comprises a plurality of springs; the number of the springs is the same as the number of the rod length adjusting assemblies.
6. The method of manufacturing an optical fiber according to claim 1,
and the auxiliary rod connecting frame and the movable frame are both provided with positioning columns for fixing the position of the spring.
7. The method of manufacturing an optical fiber according to claim 1, further comprising the steps of:
overcoming the elasticity of the spring to move the conical ring sleeve so as to open the movable clamping jaw;
the spring drives the taper ring sleeve to move so as to drive the movable clamping jaw to clamp the optical fiber preform;
securing an auxiliary rod to the auxiliary rod attachment frame;
installing the optical fiber preform into an optical fiber hot melting furnace;
the bolt of the rod length adjusting assembly is rotated so as to adjust the length of the rod length adjusting assembly to make the optical fiber preform upright.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833949.8A CN108640502B (en) | 2018-07-26 | 2018-07-26 | Method for manufacturing optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833949.8A CN108640502B (en) | 2018-07-26 | 2018-07-26 | Method for manufacturing optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108640502A CN108640502A (en) | 2018-10-12 |
| CN108640502B true CN108640502B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810833949.8A Active CN108640502B (en) | 2018-07-26 | 2018-07-26 | Method for manufacturing optical fiber |
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| CN (1) | CN108640502B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110333571B (en) * | 2019-07-01 | 2021-03-26 | 华中科技大学鄂州工业技术研究院 | Double negative curvature anti-resonance hollow optical fiber and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6138481A (en) * | 1998-01-27 | 2000-10-31 | Sumitomo Electric Industries, Inc. | Glassrod elongation heating furnance having double bellows |
| US20040206128A1 (en) * | 2001-05-30 | 2004-10-21 | Anna Zilnyk | Method of manufacturing glass optical fibre preforms and optical fibres |
| JP2008178956A (en) * | 2007-01-25 | 2008-08-07 | Sumitomo Electric Ind Ltd | Griping device and heating device of glass element |
| CN102206040A (en) * | 2011-03-04 | 2011-10-05 | 中天科技精密材料有限公司 | Horizontal extension device of optical fiber preform |
| CN106007353A (en) * | 2016-05-19 | 2016-10-12 | 江苏亨通光导新材料有限公司 | Fixing device of optical fiber preform and fixing method of fixing device |
| CN205670076U (en) * | 2015-11-09 | 2016-11-02 | 江苏奥维信亨通光学科技有限公司 | A kind of optical-fiber prefabricated-bar clamping device |
| CN106242262A (en) * | 2016-07-14 | 2016-12-21 | 浙江富通光纤技术有限公司 | The preparation method of doped fiber surrounding layer |
| CN106746593A (en) * | 2016-12-08 | 2017-05-31 | 长飞光纤光缆股份有限公司 | A kind of spin fiber preparation method and equipment |
-
2018
- 2018-07-26 CN CN201810833949.8A patent/CN108640502B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6138481A (en) * | 1998-01-27 | 2000-10-31 | Sumitomo Electric Industries, Inc. | Glassrod elongation heating furnance having double bellows |
| US20040206128A1 (en) * | 2001-05-30 | 2004-10-21 | Anna Zilnyk | Method of manufacturing glass optical fibre preforms and optical fibres |
| JP2008178956A (en) * | 2007-01-25 | 2008-08-07 | Sumitomo Electric Ind Ltd | Griping device and heating device of glass element |
| CN102206040A (en) * | 2011-03-04 | 2011-10-05 | 中天科技精密材料有限公司 | Horizontal extension device of optical fiber preform |
| CN205670076U (en) * | 2015-11-09 | 2016-11-02 | 江苏奥维信亨通光学科技有限公司 | A kind of optical-fiber prefabricated-bar clamping device |
| CN106007353A (en) * | 2016-05-19 | 2016-10-12 | 江苏亨通光导新材料有限公司 | Fixing device of optical fiber preform and fixing method of fixing device |
| CN106242262A (en) * | 2016-07-14 | 2016-12-21 | 浙江富通光纤技术有限公司 | The preparation method of doped fiber surrounding layer |
| CN106746593A (en) * | 2016-12-08 | 2017-05-31 | 长飞光纤光缆股份有限公司 | A kind of spin fiber preparation method and equipment |
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| CN108640502A (en) | 2018-10-12 |
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