JPS62256735A - Method for fixing starting rod for producing base material of optical fiber - Google Patents
Method for fixing starting rod for producing base material of optical fiberInfo
- Publication number
- JPS62256735A JPS62256735A JP10026686A JP10026686A JPS62256735A JP S62256735 A JPS62256735 A JP S62256735A JP 10026686 A JP10026686 A JP 10026686A JP 10026686 A JP10026686 A JP 10026686A JP S62256735 A JPS62256735 A JP S62256735A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- starting rod
- starting
- optical fiber
- holder hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 title abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000010419 fine particle Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000012808 vapor phase Substances 0.000 abstract description 2
- 239000010453 quartz Substances 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005137 deposition process Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000005498 polishing Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General 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)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の前景と目的コ
本発明は、ＶＡＤ法（気相軸付法）に使用する光ファイ
バ母４４製造用出発棒の固定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Foreground and Objects of the Invention] The present invention relates to a method for fixing a starting rod for manufacturing an optical fiber mother 44 used in the VAD method (vapor phase attachment method).
第２図に基づき、ＶＡＤ法に使用する光ファイバＦｆｉ
材製造用出発棒（以下、出発棒とする）の取付例及び従
来の問題点を説明する。Based on Figure 2, the optical fiber Ffi used in the VAD method is
An example of how to attach a starting rod for material production (hereinafter referred to as starting rod) and conventional problems will be explained.
図中、１は一端が回転引上駆動装置（図示せず）に固定
されて回転引上げ動作を行なう回転引上棒、２は光ファ
イバ母材を付着成長させるための出発棒であり、一般に
出発棒２は回転引上棒１の他端（下端部）に形成された
ホルダ穴１ａに適合状態で嵌入され、回転引上棒１のホ
ルダ部１′及び出発棒２に差込ビン３を貫通させて、回
転引上棒１にｌｌｌ８２可能に取付けて固定されている
。In the figure, 1 is a rotating pulling rod whose one end is fixed to a rotating pulling drive device (not shown) to perform a rotating pulling operation, and 2 is a starting rod for attaching and growing an optical fiber preform. The rod 2 is fitted into the holder hole 1a formed at the other end (lower end) of the rotary pull-up rod 1, and the insertion pin 3 is inserted into the holder portion 1' of the rotary pull-up rod 1 and the starting rod 2. It is attached and fixed to the rotary lifting rod 1 so that it can be rotated.
このような取付構造においては、ホルダ穴１ａと出発棒
２との径差をできるだけなくしているが、実際には１本
の回転引上棒に対して多数本の出発棒を交換して使用す
るために、各出発棒のＭ度誤差により、出発棒の固定部
にがたつきが生じることが多かった。このがたつきは、
光ファイバ母材製造時の出発棒の回転引上げ速度の変ｆ
ＩＪ幅を大きくし、また、多孔質母材の成長に伴い成長
点のぶれを大きくするものであり、その結果、回転引上
動作時の出発棒のぶれが許容賄以上になると出発棒の軸
方向に安定した特性を有Ｊる光ファイバ母材を製造する
ことが難しくなる問題を有していた。In such a mounting structure, the difference in diameter between the holder hole 1a and the starting rod 2 is minimized, but in reality, a large number of starting rods are replaced for one rotating pulling rod. Therefore, the fixed portion of the starting rod often rattled due to the M degree error of each starting rod. This rattling is
Change in rotational pulling speed f of the starting rod during production of optical fiber preform
This increases the IJ width and increases the deviation of the growth point as the porous base material grows.As a result, if the deviation of the starting rod during rotational pulling operation exceeds the allowable amount, the axis of the starting rod will change. There was a problem in that it became difficult to manufacture an optical fiber preform having stable properties in the direction.
従って、従来より出発棒の研磨加工精度を向上させるこ
とが望まれているが、実際には、光ファイバ母材製造が
問題なく行ない得るホルダ径と出発棒の公差は１０μｍ
〜２０μｍであるのに対し、研磨加工による出発棒の径
寸法のばらつきは１０μｍ〜４０μｍはどもあり、現在
の加工技術では、このばらつきを小さくするのが困烈で
あり、現状においては、入手した出発棒のうち使用でき
るのは、３０％程度であり光ファイバ製造時のコストの
面の無駄が生じていた。Therefore, it has been desired to improve the polishing accuracy of the starting rod, but in reality, the tolerance between the holder diameter and the starting rod is 10 μm, which allows for the production of optical fiber preforms without any problems.
~20 μm, whereas the variation in the diameter of the starting rod due to polishing is 10 μm to 40 μm, and with current processing technology, it is difficult to reduce this variation. Only about 30% of the starting rod can be used, resulting in waste in terms of cost when manufacturing the optical fiber.
本発明は、以上の点に鑑みてなされたものであり、その
目的とするところは、ホルダ穴と出発棒の間に精度誤差
が生じても、出発棒を安定した状態で固定し、安定した
特性を有する光ファイバ母材を製造することができる光
ンイバ母材製造用出発棒の固定方法を提供することにあ
る。The present invention has been made in view of the above points, and its purpose is to fix the starting rod in a stable state even if an accuracy error occurs between the holder hole and the starting rod, and to stabilize the starting rod. It is an object of the present invention to provide a method for fixing a starting rod for manufacturing an optical fiber preform, which can manufacture an optical fiber preform having characteristics.
［発明の概要］
本発明は、上記目的を達成づるために、一端が回転引上
駆動装置に固定され他端にホルダ穴を有し、ホルダ穴に
差込ビンを介して光ファイバ母材製造用の出発棒を固定
してなるものにおいて、前記出発棒が嵌入された前記ホ
ルダ穴の内周面と前記出発棒の外周面との間に、ガラス
微粒子をペースト状にしたものを介在させて前記出発棒
を前記ホルダ穴に固定したものである。[Summary of the Invention] In order to achieve the above object, the present invention has one end fixed to a rotary pulling drive device and a holder hole at the other end, and an optical fiber preform manufactured by inserting a bottle into the holder hole. In the product in which a starting rod is fixed, a paste of glass fine particles is interposed between the inner circumferential surface of the holder hole into which the starting rod is inserted and the outer circumferential surface of the starting rod. The starting rod is fixed to the holder hole.
このような構成よりなる本発明によれば、ペースト状の
ガラス微粒子が介在して、ホルダ穴の内周面と出発棒の
外周面との間の微小間隙を吸収し、且つ出発棒がペース
ト状ガラス微粒子を介してホルダ穴の内周面に密着する
ので、出発棒が回転引上棒のホルダ穴にがたつきが生じ
ることなく固定される。According to the present invention having such a configuration, the paste-like glass particles are interposed to absorb the minute gap between the inner circumferential surface of the holder hole and the outer circumferential surface of the starting rod, and the starting rod is pasty-like. Since the starting rod is tightly attached to the inner circumferential surface of the holder hole through the glass particles, the starting rod is fixed in the holder hole of the rotating pull-up rod without wobbling.
［発明の実施＠］ 本発明の一実施例を第１図に基づき説明する。[Implementation of the invention@] An embodiment of the present invention will be described based on FIG.
第１図は本発明の出発棒固定方法に基づいて回転弓しト
捧のホルダ穴に光ファイバ母材製造用の出発棒を取付け
た取付構造例を示すものであり、図中、既述した第１図
の符号と同一符号は同一部分を示すものである。Figure 1 shows an example of a mounting structure in which a starting rod for manufacturing an optical fiber preform is attached to a holder hole of a rotating bow based on the starting rod fixing method of the present invention. The same reference numerals as those in FIG. 1 indicate the same parts.
すなわち、１は一端が回転引上駆動装置に固定されて回
転引上げ紡作を行なう回転引上棒、１ａは回転引上棒の
他端側に形成したホルダ穴、２はＶＡＤ法に使用する光
ファイバ！４造用の出発棒、３は出発棒２をホルダ穴１
ａに取付けるｒ−メの差込ビンであり、これら回転引上
棒１．出発棒２゜差込ビン３は石英ガラス材で成形され
ている。Namely, 1 is a rotary pull-up rod whose one end is fixed to a rotary pull-up drive device to perform rotary pull-up spinning, 1a is a holder hole formed at the other end of the rotary pull-up rod, and 2 is a light beam used in the VAD method. fiber! Starting rod for 4 models, 3, insert starting rod 2 into holder hole 1
This is an R-type insertion bottle that is attached to the rotary lifting rod 1. The starting rod 2° insertion bottle 3 is made of quartz glass material.
そして、本実施例では、出発棒２をホルダ穴１ａに嵌入
したときに、後述するペースト状のガラス微粒子４を、
ボルダ穴１ａの内周面と出発棒２の外周面との間に介在
させて出発棒２をホルダ穴１ａに固定している。In this embodiment, when the starting rod 2 is inserted into the holder hole 1a, the paste-like glass particles 4, which will be described later, are
The starting rod 2 is fixed to the holder hole 1a by being interposed between the inner peripheral surface of the boulder hole 1a and the outer peripheral surface of the starting rod 2.
次に、出発棒２をホルダ穴１ａに嵌合固定する場合の作
業工程を説明する。Next, a working process for fitting and fixing the starting rod 2 into the holder hole 1a will be described.
先ず、回転引上棒１のホルダ穴１ａに出発棒２の一端を
挿入し、ホルダ穴１ａに対する出発棒２のがたつきの度
合を調べる。First, one end of the starting rod 2 is inserted into the holder hole 1a of the rotary lifting rod 1, and the degree of wobbling of the starting rod 2 with respect to the holder hole 1a is examined.
次に、予め用意された適当な容器にＶＡＤ法で製造され
たガラス微粒子を小さじ半分式れて水を加え、これらを
練ってペースト状に覆る。なお、ペーストの練り具合は
、先に調べた出発棒２のがたつきに応じ、がたつきの大
きいときは水を少なめにし、がたうきの小さい時は水を
多めに加えて調整する。Next, half a teaspoon of glass fine particles produced by the VAD method is placed in a suitable container prepared in advance, water is added, and the mixture is kneaded to form a paste. The degree of kneading of the paste is adjusted according to the wobbling of the starting rod 2 that was investigated earlier.If the wobbling is large, add less water, and if the wobbling is small, add more water.
次いで、このようにして１成されたガラス微粒子ペース
ト４を出発棒２の一端外周面に塗布し、この出発棒２の
一端をホルダ穴１ａに嵌入して、その後、差込ビン３を
ホルダ部１′及び出発棒２に貫通させて差込むことによ
り、出発棒２を固定する。Next, the glass fine particle paste 4 thus formed is applied to the outer peripheral surface of one end of the starting rod 2, one end of the starting rod 2 is fitted into the holder hole 1a, and then the insert bottle 3 is inserted into the holder part. 1' and the starting rod 2, and the starting rod 2 is fixed.
このような出発棒２の固定方法によれば、ホルダ穴１ａ
の内周面と出発棒２の外周面との間の微小間隙にガラス
微粒子ペースト４が介在するので、このガラス微粒子ペ
ースト４を介して出発棒２のがたつきが吸収される。According to such a method of fixing the starting rod 2, the holder hole 1a
Since the glass fine particle paste 4 is present in the minute gap between the inner peripheral surface of the starting rod 2 and the outer peripheral surface of the starting rod 2, the shaking of the starting rod 2 is absorbed through the glass fine particle paste 4.
しかして、このようイ５固定方法を用いてＶＡＤ法によ
る光ファイバ母材９Ｊ ｎを行ったところ、出発棒２と
ホルダ穴１ａとの間にがたつきがなくなリ、その結果、
出発棒２の回転引上速度の変動幅が小さくなり、出発棒
２のターゲット部に光ファイバ母材を軸方向に安定した
状態で付着成長させることができた。When the optical fiber preform 9Jn was formed by the VAD method using the fixing method A5, there was no looseness between the starting rod 2 and the holder hole 1a, and as a result,
The range of variation in the rotational pulling speed of the starting rod 2 was reduced, and it was possible to adhere and grow the optical fiber preform on the target portion of the starting rod 2 in a stable state in the axial direction.
また、本実施例によれば、ホルダ穴１ａとその径差の大
きい出発棒の使用も可能となり、出発棒２に粒度誤差が
生じても出発棒を無駄にすることなく使用でき、光ファ
イバ製造作業時のコストの低減化を図り得る。Furthermore, according to this embodiment, it is possible to use a starting rod with a large difference in diameter between the holder hole 1a and the starting rod, and even if a particle size error occurs in the starting rod 2, the starting rod can be used without wasting it, and it is possible to manufacture optical fibers. It is possible to reduce costs during work.
なお、本実施例では、ガラス微粒子に水を加えてガラス
微粒子ペーストを生成したが、水に代えてアルコール、
その他通貨の液体をガラス微粒子に加えてペースト状に
してもよい。In this example, water was added to glass particles to produce a glass particle paste, but alcohol, alcohol,
Other currency liquids may be added to the glass particles to form a paste.
［発明の効果］
以上のように、本発明によれば、回転引上棒に出発棒を
がたつくことなく安定した状態で固定させることができ
、特性の安定化した光ファイバ母材を製造することがで
き、しかも、出発棒の固定構造を複雑にすることなく簡
単な方法で固定できるので実用性の高い固定方法を捉供
することができる。[Effects of the Invention] As described above, according to the present invention, the starting rod can be fixed to the rotating pulling rod in a stable state without wobbling, and an optical fiber preform with stabilized characteristics can be manufactured. Furthermore, since the starting rod can be fixed in a simple manner without complicating the fixing structure, a highly practical fixing method can be provided.
第１図は、本発明の一実施例である光ファイバ母０製造
用出発捧の固定方法を用いて出発棒を回転引上棒に取付
けた取付構造を示す要部断面図。
第２図は従来の光ファイバ母材製造用出発棒の取付構造
を示す要部断面図である。
１・・・回転引上棒。
１ａ・・・ホ ル ダ穴。
２・・・出 発 棒。
３・・・差 込 ビ ン。
４・・・ガラス微粒子ペースト。FIG. 1 is a sectional view of a main part showing a mounting structure in which a starting rod is attached to a rotary pulling rod using a method of fixing a starting rod for manufacturing an optical fiber mother 0, which is an embodiment of the present invention. FIG. 2 is a sectional view of a main part showing a conventional mounting structure for a starting rod for manufacturing an optical fiber preform. 1...Rotating pull-up rod. 1a...Holder hole. 2... Starting stick. 3...Insert bottle. 4... Glass fine particle paste.
Claims (1)
動作を行なう回転引上棒の他端にホルダ穴を形成し、該
ホルダ穴に光ファイバ母材製造用の出発棒を嵌入し、前
記回転引上棒と前記出発棒とに差込ピンを貫通させて、
前記出発棒を前記回転引上棒に取付けてなるものにおい
て、前記出発棒が嵌入された前記ホルダ穴の内周面と前
記出発棒の外周面との間に、ガラス微粒子をペースト状
にしたものを介在させて前記出発棒を前記ホルダ穴に固
定することを特徴とする光ファイバ母材製造用出発棒の
固定方法。(1) A holder hole is formed at the other end of the rotary pulling rod whose one end is fixed to a rotary lifting drive device and performs a rotary mold lifting operation, and a starting rod for manufacturing an optical fiber preform is inserted into the holder hole. , an insertion pin is passed through the rotating pull-up rod and the starting rod,
In the device in which the starting rod is attached to the rotary pulling rod, glass fine particles are made into a paste between the inner circumferential surface of the holder hole into which the starting rod is fitted and the outer circumferential surface of the starting rod. 1. A method for fixing a starting rod for manufacturing an optical fiber preform, characterized in that the starting rod is fixed in the holder hole with a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10026686A JPS62256735A (en) | 1986-04-30 | 1986-04-30 | Method for fixing starting rod for producing base material of optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10026686A JPS62256735A (en) | 1986-04-30 | 1986-04-30 | Method for fixing starting rod for producing base material of optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62256735A true JPS62256735A (en) | 1987-11-09 |
Family
ID=14269398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10026686A Pending JPS62256735A (en) | 1986-04-30 | 1986-04-30 | Method for fixing starting rod for producing base material of optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62256735A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0337128A (en) * | 1989-07-04 | 1991-02-18 | Fujikura Ltd | Production device of optical fiber and its production |
| EP0519468A2 (en) * | 1991-06-19 | 1992-12-23 | Sumitomo Electric Industries, Limited | Apparatus for supporting article in heating furnace |
| US5417399A (en) * | 1991-06-19 | 1995-05-23 | Sumitomo Electric Industries, Ltd. | Apparatus for supporting article in heating furnace |
| EP0770583A1 (en) * | 1992-07-09 | 1997-05-02 | Sumitomo Electric Industries, Ltd | Method for drawing glass proform for optical fiber |
| EP1375441A4 (en) * | 2001-03-23 | 2004-08-18 | Sumitomo Electric Industries | Method of supporting glass base material and supporting pin |
-
1986
- 1986-04-30 JP JP10026686A patent/JPS62256735A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0337128A (en) * | 1989-07-04 | 1991-02-18 | Fujikura Ltd | Production device of optical fiber and its production |
| EP0519468A2 (en) * | 1991-06-19 | 1992-12-23 | Sumitomo Electric Industries, Limited | Apparatus for supporting article in heating furnace |
| US5417399A (en) * | 1991-06-19 | 1995-05-23 | Sumitomo Electric Industries, Ltd. | Apparatus for supporting article in heating furnace |
| EP0770583A1 (en) * | 1992-07-09 | 1997-05-02 | Sumitomo Electric Industries, Ltd | Method for drawing glass proform for optical fiber |
| US5674306A (en) * | 1992-07-09 | 1997-10-07 | Sumitomo Electric Industries, Ltd. | Method and apparatus for drawing glass preform for optical fiber |
| EP1375441A4 (en) * | 2001-03-23 | 2004-08-18 | Sumitomo Electric Industries | Method of supporting glass base material and supporting pin |
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