CN111484240A - Rod hanging system and rod hanging method for original tail handle of optical fiber preform rod - Google Patents
Rod hanging system and rod hanging method for original tail handle of optical fiber preform rod Download PDFInfo
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- CN111484240A CN111484240A CN202010196095.4A CN202010196095A CN111484240A CN 111484240 A CN111484240 A CN 111484240A CN 202010196095 A CN202010196095 A CN 202010196095A CN 111484240 A CN111484240 A CN 111484240A
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- rod
- tail pipe
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- sealing cover
- tail
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000010453 quartz Substances 0.000 claims abstract description 108
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 108
- 238000007789 sealing Methods 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000005491 wire drawing Methods 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 8
- 238000012681 fiber drawing Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims 1
- 210000001503 joint Anatomy 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007380 fibre production Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XOJVVFBFDXDTEG-UHFFFAOYSA-N Norphytane Natural products CC(C)CCCC(C)CCCC(C)CCCC(C)C XOJVVFBFDXDTEG-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- C03B37/02—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
Abstract
The invention provides an original tail handle rod hanging system of an optical fiber preform rod, which comprises a quartz tail pipe fixed on an optical rod platform of a wire drawing tower; a concave cavity is formed at the lower end of the quartz tail pipe, a clamping groove for hanging a prefabricated rod is processed on the inner wall of the concave cavity, and an original tail handle of the prefabricated rod is hung in the clamping groove; a sealing cover is arranged on the outer side of the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe, the lower end of the sealing cover falls below the diameter-variable loose body at the tail part of the prefabricated rod, and a sealing component is arranged between the sealing cover and the quartz tail pipe; and a puller block is arranged in a gap between the original tail handle of the prefabricated rod and the quartz tail pipe. The rod hanging method provided by the invention saves the butt joint pretreatment link of the tail pipe of the prefabricated rod, does not need the cutting process of the original tail handle, does not need the recovery of the butt joint quartz tail pipe, saves the manpower and the consumption of auxiliary materials, can directly use the optical fiber prefabricated rod which leaves the factory for online drawing, and reduces the production cost of the optical fiber.
Description
Technical Field
The invention belongs to the technical field of optical fiber production, and particularly relates to a rod hanging system and a rod hanging method for an original tail handle of an optical fiber preform rod.
Background
The optical fiber is formed by heating, melting and drawing an optical fiber preform at high temperature, the original tail handle is generally reserved when the optical fiber preform leaves a factory, and the preform needs to be firmly fixed on an optical rod platform of a drawing tower before drawing production. The conventional method of hanging the stick is, excise original tail handle earlier, with a quartz tail pipe and prefabricated excellent stick body butt fusion back, hang quartz tail pipe part on hanging excellent platform again, as shown in figure 3, this kind of scheme has solved optical fiber perform and has hung the problem, but has obvious defect: firstly, the butt joint of the tail pipe needs to increase corresponding equipment purchase and use maintenance cost, a special processing workshop and a matched pipeline are built, and a plurality of pretreatment procedures such as cutting of an original tail handle, welding of the quartz tail pipe and recycling are added, so that a large amount of manpower and raw and auxiliary material cost are generated. Meanwhile, hydrogen and oxygen which need to be introduced in the production process have high dangerousness, and have extremely high requirements on the operation specification of personnel and the production installation performance. Second, prefabricated stick fracture when butt joint and butt fusion of tail pipe are easily taken place to the butt fusion process, and the former easily appears the butt fusion department fracture at string stick or wire drawing in-process and leads to the prefabricated stick to fall, has the potential safety hazard, and the latter then directly causes economic loss.
Disclosure of Invention
In view of the above, the present invention provides a rod hanging system and a rod hanging method for an original tail handle of an optical fiber perform, which aim to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an original tail handle rod hanging system of an optical fiber preform rod comprises a quartz tail tube fixed on an optical rod platform of a wire drawing tower;
a concave cavity is formed at the lower end of the quartz tail pipe, a clamping groove for hanging a prefabricated rod is processed on the inner wall of the concave cavity, and an original tail handle of the prefabricated rod is hung in the clamping groove;
a sealing cover is arranged on the outer side of the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe, the lower end of the sealing cover falls below the diameter-variable loose body at the tail part of the prefabricated rod, and a sealing component is arranged between the sealing cover and the quartz tail pipe;
and a puller block is arranged in a gap between the original tail handle of the prefabricated rod and the quartz tail pipe so as to keep the prefabricated rod from shaking integrally after being hung in the quartz tail pipe.
Furthermore, the upper end of the sealing cover is fixed at the lower part of the quartz tail pipe.
Further, the sealing boot suit is in the quartz tail pipe outside, seal assembly includes the sealing member of sealing boot top and the circular clamping ring that compresses tightly the sealing member.
Further, the upper half part of the quartz tail pipe is of a hollow structure, the lower half part of the quartz tail pipe is of a solid cylindrical structure, and a concave cavity is formed in the position of the solid cylindrical structure.
Furthermore, the jacking block is made of quartz materials, and the surface of the jacking block is subjected to frosting treatment.
Furthermore, the sealing cover is made of quartz materials.
Furthermore, the outer surface of the upper end of the quartz tail pipe is provided with a ring groove.
A rod hanging method applying the rod hanging device,
arranging a ring groove on the outer side of the upper end of a quartz tail pipe, and arranging a concave cavity on the lower end of the quartz tail pipe; clamping the quartz tail pipe at the ring groove by using a clamp, and fixing the quartz tail pipe on a fiber drawing tower optical rod platform;
hanging the original tail handle of the prefabricated rod on a clamping groove arranged in the cavity, and installing a jacking block on the original tail handle of the prefabricated rod and the quartz tail pipe, wherein the jacking block tightly contacts the original tail handle of the prefabricated rod with the top of the cavity of the quartz tail pipe so as to ensure that the prefabricated rod is not shaken integrally after being hung in the quartz tail pipe;
the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe is covered by the sealing cover, the lower end of the sealing cover covers the diameter-variable loose body at the tail part of the prefabricated rod, the connecting and diameter-variable area is integrally covered, and after the lower end of the sealing cover is inserted into the furnace mouth sealing system, the sealing cover can isolate the furnace from the outside;
and a sealing assembly is arranged between the sealing cover and the quartz tail pipe to keep the sealing performance between the quartz tail pipe and the sealing cover.
Further, the surfaces of the jacking block and the quartz tail pipe are both subjected to frosting treatment.
Further, the outer diameter of the sealing cover is larger than or equal to the maximum diameter of the prefabricated rod, and the outer diameter of the quartz tail pipe is smaller than the inner diameter of the sealing cover.
Compared with the prior art, the invention has the following advantages:
the rod hanging method provided by the invention saves the butt joint pretreatment link of the tail pipe of the prefabricated rod, does not need the cutting procedure of the original tail handle, does not need the recovery of the butt joint quartz tail pipe, saves the consumption of manpower and auxiliary materials, can directly use the optical fiber prefabricated rod from factory in an online drawing way, improves the production efficiency of the optical fiber, simultaneously stops the economic loss caused by the virtual joint and rod cracking of the tail pipe of the pretreatment procedure, and reduces the production cost of the optical fiber.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of a hanging rod system created by the present invention;
FIG. 2 is a schematic view of a preform rod having a pristine tail handle in an embodiment of the inventive technique;
FIG. 3 is a schematic view of a preform rod when a quartz tail tube is fused in a conventional rod hanging method;
FIG. 4 is a schematic diagram of a tightening block according to an embodiment of the present invention;
FIG. 5 is a schematic view of a quartz tailpipe in an embodiment of the invention;
fig. 6 is a schematic view of a circular pressure ring in an embodiment of the present invention.
Description of reference numerals: 1-quartz tail tube; 2-a cavity; 3-a card slot; 4-tail handle; 5-sealing the cover; 6-a jacking block; 7-a seal; 8-a circular compression ring; 9-ring groove; 10-a preform rod; 11-a variable diameter loose body; 12-a wire drawing furnace; 13-a body; 14-quartz bowl; 15-high temperature resistant sealing; 16-an inlet; 17-a clamp.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
An optical fiber preform original tail handle hanging rod system is shown in figures 1 to 6 and comprises a quartz tail tube 1 fixed on a fiber drawing tower optical rod platform; the outer surface of the upper end of the quartz tail pipe is provided with a ring groove 9, and the quartz tail pipe is fixed by the ring groove;
a concave cavity 2 is arranged at the lower end of the quartz tail pipe, a clamping groove 3 for hanging the prefabricated rod is processed on the inner wall of the concave cavity, and an original tail handle 4 of the prefabricated rod is hung in the clamping groove;
a sealing cover 5 is arranged on the outer side of the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe, the lower end of the sealing cover falls below the diameter-variable loose body 11 at the tail part of the prefabricated rod, the sealing cover is made of quartz materials, the inner diameter of the sealing cover is generally larger than that of the rod body 10 of the prefabricated rod, and a sealing assembly is arranged between the sealing cover and the quartz tail pipe;
a jacking block 6 is arranged in a gap between the original tail handle of the prefabricated rod and the quartz tail pipe, and as shown in figure 5, the prefabricated rod is kept from shaking after being hung in the quartz tail pipe; the top tight block can be made of high-temperature resistant quartz material with low expansion coefficient, and the surface of the top tight block is frosted to slow down light radiation conduction and increase friction force. The projecting part at the top end of the original tail handle is used for hanging, and is tightly pressed between the original tail handle and the quartz tail pipe through a jacking block, so that the stability of the structure is kept.
Utilize the atmoseal structure on 12 tops of wire drawing stove to seal the prefabricated stick that gets into the wire drawing stove, atmoseal structure includes main part 13, is equipped with quartz bowl 14 respectively at main part upper and lower both ends, is equipped with soft high temperature resistant seal 15 in quartz bowl, through 16 insufflations argon gas to the import in the main part, realizes the atmoseal.
Generally, the upper end of the sealing cover is fixed at the lower part of the quartz tail pipe, as an example of a structure, a clamping column or a step is arranged on the outer surface of the quartz tail pipe, and the sealing cover is sleeved outside the quartz tail pipe, clamped at the upper side of the clamping column or the step, equivalently hung outside the quartz tail pipe, and then sealed by a sealing component.
The sealing cover is sleeved on the outer side of the quartz tail pipe, and the sealing assembly comprises a sealing piece 7 arranged at the top of the sealing cover and a circular pressing ring 8 used for pressing the sealing piece. The sealing element can be an annular sealing ring or an annular sealing gasket, or other sealing fillers, so long as the sealing element is a high-temperature-resistant soft sealing material and is suitable for realizing sealing. It should be noted that the circular compression ring can be formed by two split semi-circular rings, as shown in fig. 6, the two semi-circular rings are fixed by a connecting piece, and the installation is easy.
The upper half part of the quartz tail pipe is of a hollow structure, the lower half part of the quartz tail pipe is of a solid cylindrical structure, and a concave cavity is formed in the position of the solid cylindrical structure. In addition, a puller block is arranged between the bottom of the concave cavity of the quartz tail pipe and the original tail handle of the prefabricated rod, so that the upper part and the lower part of the quartz tail pipe are not communicated, and the upward transmission of light radiation is effectively avoided.
The following provides a rod hanging method using the rod hanging device,
arranging a ring groove on the outer side of the upper end of a quartz tail pipe, and arranging a concave cavity on the lower end of the quartz tail pipe; clamping the quartz tail pipe at the ring groove by using a clamp 17, and fixing the quartz tail pipe on a fiber drawing tower smooth rod platform;
the original tail handle of the prefabricated rod is hung on a clamping groove arranged in the cavity, and a jacking block is arranged between the original tail handle of the prefabricated rod and the quartz tail pipe (a proper distance is reserved between the horizontal end surface of the top of the original tail handle of the prefabricated rod and the bottom of the cavity of the quartz tail pipe for placing the jacking block). It should be noted that the original tail handle of the preform may have different sizes, and therefore, the gap between the original tail handle and the bottom of the cavity of the quartz tail tube may also be different, and therefore, the tightening block may have various structures or specifications as long as it is matched for use.
The original tail handle of the prefabricated rod is tightly contacted with the top of the concave cavity of the quartz tail pipe by the jacking block so as to ensure that the prefabricated rod is not shaken integrally after being hung in the quartz tail pipe; the surfaces of the jacking block and the quartz tail pipe are both subjected to frosting treatment, so that light radiation conduction is reduced;
the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe is covered by the sealing cover, the lower end of the sealing cover covers the diameter-variable loose body at the tail part of the prefabricated rod, the connecting and diameter-variable area is covered by the sealing cover, and after the lower end of the sealing cover is inserted into the furnace mouth sealing system, the sealing cover can isolate the furnace from the outside;
a sealing assembly is arranged between the sealing cover and the quartz tail pipe, and the sealing assembly can be arranged by placing a layer of high-temperature-resistant anti-oxidation material between the circular pressure ring on the upper edge of the sealing cover and the upper edge of the sealing cover to tightly wrap the tail pipe so as to keep the sealing property between the quartz tail pipe and the sealing cover. In addition, the specific structure of the quartz tail pipe can be that the upper half part of the quartz tail pipe is of a hollow structure, the lower half part of the quartz tail pipe is of a solid cylindrical structure, and a concave cavity is formed in the position of the solid cylindrical structure, so that the upper part and the lower part of the quartz tail pipe are not communicated, and light radiation is effectively prevented from being transmitted upwards.
The outer diameter of the sealing cover is larger than or equal to the maximum diameter of the prefabricated rod, the outer diameter of the quartz tail pipe is smaller than the inner diameter of the sealing cover, the later stage of wire drawing is guaranteed, after the lower end of the sealing cover is inserted into a furnace opening sealing system, the sealing cover can isolate a furnace from the outside, and the sealing performance is very good.
The rod hanging method is characterized in that a rod hanging scheme is designed for the optical fiber preform rod with the original tail handle, the preform rod is hung through the quartz tail pipe, the sealing cover is used for guaranteeing the sealing of the joint of the optical fiber preform rod and the quartz tail pipe, the pretreatment link of the optical fiber preform rod is reduced, the optical fiber production efficiency is improved, and the optical fiber production cost is reduced.
The rod hanging system, namely the rod hanging method provided by the invention saves the butt joint pretreatment process of the tail pipe of the preform rod, saves the cutting process of the original tail handle, does not need to recycle the butt joint tail pipe, saves manpower and auxiliary materials, and avoids the safety problem and economic loss caused by the virtual joint and rod cracking of the tail pipe.
In addition, the original tail handle prefabricated rod hung in the quartz tail pipe is fixed at the joint, so that the prefabricated rod does not shake in the wire drawing process, the rod position can be conveniently adjusted, and the stability of the wire drawing diameter is facilitated. Meanwhile, the sealing cover extends downwards to cover a cavity between the diameter-changing area of the loose body of the optical fiber preform and the quartz tail tube, so that the sealing problem of the tail handle and the diameter-changing area is solved.
And a high-temperature-resistant anti-oxidation material tightly wrapping the tail pipe is arranged between the upper edge of the sealing cover and the circular compression ring of the tail pipe, so that the problem of air sealing between the tail pipe and the sealing cover is solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a stick system is hung to original tail handle of optical fiber perform which characterized in that: comprises a quartz tail pipe fixed on a fiber rod platform of a wire drawing tower;
a concave cavity is formed at the lower end of the quartz tail pipe, a clamping groove for hanging a prefabricated rod is processed on the inner wall of the concave cavity, and an original tail handle of the prefabricated rod is hung in the clamping groove;
a sealing cover is arranged on the outer side of the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe, the lower end of the sealing cover falls below the diameter-variable loose body at the tail part of the prefabricated rod, and a sealing component is arranged between the sealing cover and the quartz tail pipe;
and a puller block is arranged in a gap between the original tail handle of the prefabricated rod and the quartz tail pipe so as to keep the prefabricated rod from shaking integrally after being hung in the quartz tail pipe.
2. The system of claim 1, wherein the optical fiber preform primary tail handle hanging rod system comprises: the upper end of the sealing cover is fixed at the lower part of the quartz tail pipe.
3. The system of claim 1, wherein the optical fiber preform primary tail handle hanging rod system comprises: the sealing cover suit is in the quartz tail pipe outside, seal assembly includes the sealing member at sealing cover top and the circular clamping ring that compresses tightly the sealing member.
4. The system of claim 1, wherein the optical fiber preform primary tail handle hanging rod system comprises: the upper half part of the quartz tail pipe is of a hollow structure, the lower half part of the quartz tail pipe is of a solid cylindrical structure, and a concave cavity is formed in the position of the solid cylindrical structure.
5. The system of claim 1, wherein the optical fiber preform primary tail handle hanging rod system comprises: the jacking block is made of quartz materials, and the surface of the jacking block is subjected to frosting treatment.
6. The system of claim 1, wherein the optical fiber preform primary tail handle hanging rod system comprises: the sealing cover is made of quartz materials.
7. The system of claim 1, wherein the optical fiber preform primary tail handle hanging rod system comprises: and the outer surface of the upper end of the quartz tail pipe is provided with a ring groove.
8. A rod hanging method using the rod hanging device according to claim 1, wherein:
arranging a ring groove on the outer side of the upper end of a quartz tail pipe, and arranging a concave cavity on the lower end of the quartz tail pipe; clamping the quartz tail pipe at the ring groove by using a clamp, and fixing the quartz tail pipe on a fiber drawing tower optical rod platform;
hanging the original tail handle of the prefabricated rod on a clamping groove arranged in the cavity, and installing a jacking block on the original tail handle of the prefabricated rod and the quartz tail pipe, wherein the jacking block tightly contacts the original tail handle of the prefabricated rod with the top of the cavity of the quartz tail pipe so as to ensure that the prefabricated rod is not shaken integrally after being hung in the quartz tail pipe;
the connecting part of the tail handle of the prefabricated rod and the quartz tail pipe is covered by a sealing cover, and the lower end of the sealing cover covers the diameter-variable loose body at the tail part of the prefabricated rod;
and a sealing assembly is arranged between the sealing cover and the quartz tail pipe to keep the sealing performance between the quartz tail pipe and the sealing cover.
9. The rod hanging method according to claim 8, characterized in that: the surfaces of the jacking block and the quartz tail pipe are both subjected to sanding treatment.
10. The rod hanging method according to claim 8, characterized in that: the outer diameter of the sealing cover is larger than or equal to the maximum diameter of the prefabricated rod, and the outer diameter of the quartz tail pipe is smaller than the inner diameter of the sealing cover.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010196095.4A CN111484240A (en) | 2020-03-19 | 2020-03-19 | Rod hanging system and rod hanging method for original tail handle of optical fiber preform rod |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010196095.4A CN111484240A (en) | 2020-03-19 | 2020-03-19 | Rod hanging system and rod hanging method for original tail handle of optical fiber preform rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880423A (en) * | 2021-11-06 | 2022-01-04 | 江苏永鼎股份有限公司 | Tool for drawing optical fiber preform and using method thereof |
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| JP2016028989A (en) * | 2014-07-25 | 2016-03-03 | 住友電気工業株式会社 | Manufacturing method and manufacturing apparatus for optical fibers |
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