JP2793408B2 - Optical fiber drawing equipment - Google Patents
Optical fiber drawing equipmentInfo
- Publication number
- JP2793408B2 JP2793408B2 JP4023240A JP2324092A JP2793408B2 JP 2793408 B2 JP2793408 B2 JP 2793408B2 JP 4023240 A JP4023240 A JP 4023240A JP 2324092 A JP2324092 A JP 2324092A JP 2793408 B2 JP2793408 B2 JP 2793408B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- cooling
- cylinder
- fiber drawing
- hollow cylindrical
- 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.)
- Expired - Lifetime
Links
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
- C03B37/02—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
- C03B37/02718—Thermal treatment of the fibre during the drawing process, e.g. cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/50—Cooling the drawn fibre using liquid coolant prior to coating, e.g. indirect cooling via cooling jacket
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/55—Cooling or annealing the drawn fibre prior to coating using a series of coolers or heaters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal 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)
Description
【０００１】[0001]
【産業上の利用分野】この発明は光ファイバの線引装
置、特に冷却筒間の間隙部が密閉されて有害な外気の混
入を防止した冷却装置を有する光ファイバの線引装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber drawing apparatus, and more particularly to an optical fiber drawing apparatus having a cooling device in which a gap between cooling cylinders is sealed to prevent harmful outside air from entering. .
【０００２】[0002]
【従来の技術】光ファイバの線引装置における冷却装置
は、図４に示すように中空円柱状のジャケット式の冷却
筒Ｃ１，Ｃ２，…が鉛直方向に同軸的に直列に配置され
て成るものである。個々の冷却筒Ｃ１などは中空円柱状
をなし、中空部４を光ファイバ１が鉛直方向に走行す
る。この中空部４にはたとえばヘリウムのような熱伝達
率の高い冷却媒体が封入され、さらにその周囲の壁肉部
にはジャケット３が形成され、この内部にはたとえば水
のような冷却媒体が封入されている。その冷却媒体が冷
却装置５を経由して循環することによって所望の温度以
下に冷却され、中空部４を走行する光ファイバ１を冷却
する仕組みである。光ファイバ１が走行する中空部４の
両端部付近には中空部４に封入されている冷却媒体の流
出を避けるために適宜の不活性のシールガス６、普通は
窒素ガスが封入される。2. Description of the Related Art As shown in FIG. 4, a cooling apparatus in an optical fiber drawing apparatus comprises a hollow cylindrical jacket-type cooling cylinder C1, C2,... It is. The individual cooling cylinders C1 and the like have a hollow cylindrical shape, and the optical fiber 1 runs in the hollow portion 4 in the vertical direction. The hollow portion 4 is filled with a cooling medium having a high heat transfer coefficient, such as helium, and the surrounding wall is formed with a jacket 3, and the inside thereof is filled with a cooling medium such as water. Have been. The cooling medium is cooled to a desired temperature or lower by circulating through the cooling device 5 to cool the optical fiber 1 traveling in the hollow portion 4. In the vicinity of both ends of the hollow portion 4 where the optical fiber 1 runs, an appropriate inert sealing gas 6, usually nitrogen gas, is sealed to prevent the cooling medium sealed in the hollow portion 4 from flowing out.
【０００３】[0003]
【発明が解決しようとする課題】個々の冷却筒Ｃ１等は
製造技術上あまり長いものを作ることができないから、
冷却効果を高める目的で冷却装置を長くするためには多
数の冷却筒Ｃ１，Ｃ２…を直列に連結しなくてはならな
い。こうすると当然、各冷却筒間の空隙部１０１の数が
多くなる理であるが、光ファイバ１の走行速度が大きく
なると各冷却筒の中空部４の入口からの外気の巻き込み
導入が大きくなり、中空部４内の熱伝達率が低くなって
冷却効率が下がり、光ファイバの温度が十分に下がらな
いという品質管理上の問題があった。またシールガスを
消耗する不都合もある。Since the individual cooling cylinders C1 and the like cannot be made too long due to manufacturing technology,
In order to lengthen the cooling device in order to enhance the cooling effect, a number of cooling cylinders C1, C2,... Must be connected in series. In this case, naturally, the number of the gaps 101 between the cooling cylinders increases. However, when the traveling speed of the optical fiber 1 increases, the entrainment and introduction of the outside air from the inlet of the hollow portion 4 of each cooling cylinder increases, There is a problem in quality control that the heat transfer coefficient in the hollow portion 4 is reduced, the cooling efficiency is reduced, and the temperature of the optical fiber is not sufficiently lowered. There is also a disadvantage that the seal gas is consumed.
【０００４】[0004]
【課題を解決するための手段】この発明は上述の課題を
解決するためになされたものであって、光ファイバの走
行方向である鉛直方向に適宜の間隔をもって同軸的に直
列に配置固定される複数の冷却筒のうち隣接する２個
が、中空円柱状の取付筒体とこれに同軸的に係合して嵌
入伸び出し自在に取り付けられる中空円柱状の伸縮筒体
とからなる連結筒によって気密に連結される冷却装置を
有する光ファイバの線引装置光ファイバの走行方向であ
る鉛直方向に適宜の間隔をもって同軸的に直列に配置さ
れる複数の冷却筒が、中空円柱状の取付筒体とこれに同
軸的に係合して嵌入伸び出し自在に取り付けられる中空
円柱状の伸縮筒体とからなる連結筒によって気密に連結
される冷却装置を有する光ファイバの線引装置である。The present invention solves the above-mentioned problems.
This was done to solve the problem
Coaxially with a suitable interval in the vertical direction
Arrange in columnFixedMultiple cooling cylindersTwo adjacent
Are fitted and fitted coaxially with the hollow cylindrical mounting cylinder.
Hollow cylindrical telescopic cylinder that can be freely inserted and extended
A cooling device airtightly connected by a connecting cylinder consisting of
Optical fiber drawing device
Are arranged coaxially in series at appropriate intervals in the vertical direction.
A plurality of cooling cylinders are attached to a hollow cylindrical mounting cylinder.
Hollow that can be axially engaged to fit and extend freely
Airtight connection by a connecting cylinder consisting of a cylindrical telescopic cylinder
1 is an optical fiber drawing device having a cooling device to be used.
【０００５】[0005]
【作用】各冷却筒は連結筒によって気密に連結されるか
ら、冷却筒間の空隙部がなくなり、したがつて外気の巻
き込み導入も皆無となって光ファイバの冷却効率が低下
することなく線引き品質が向上する。[Function] Since each cooling cylinder is airtightly connected by the connecting cylinder, there is no gap between the cooling cylinders, so that there is no entrainment and introduction of outside air, so that the cooling efficiency of the optical fiber is not reduced and the drawing quality is reduced. Is improved.
【０００６】[0006]
【実施例】図１および図２についてこの発明の一実施例
を説明する。まず図２についてこの発明の主要な構成要
素である連結筒２を説明する。取付筒体２１は概して中
空円柱状をなし、その内壁面にはめねじ部２１Ａが形成
される。取付筒体２１の一端には外周に取付ねじ２１Ｂ
が形成された取付け突出部が設けられるが、これは図示
のように下方に位置する冷却筒Ｃ２にねじ込んで取り付
けるためのものである。取付筒体２１と同様に概して中
空円柱状をなす伸縮筒体２２の外周部にはおねじ部２２
Ａが形成され、これと軸方向の他端面には適宜のパッキ
ング部材２３が貼設される。この伸縮筒体２２の中空部
について重要なことは、この中空部の内径は冷却筒Ｃ１
等の光ファイバの通路の内径とほぼ同一径とされること
である。1 and 2, an embodiment of the present invention will be described. First, a connecting cylinder 2 which is a main component of the present invention will be described with reference to FIG. The mounting cylinder 21 has a generally hollow cylindrical shape, and an internal thread portion 21A is formed on an inner wall surface thereof. At one end of the mounting cylinder 21, mounting screws 21B are provided on the outer periphery.
Is provided, which is to be screwed into the cooling cylinder C2 located below as shown in the figure. An external thread portion 22 is provided on the outer peripheral portion of a telescopic cylinder 22 having a generally hollow cylindrical shape like the mounting cylinder 21.
A is formed, and an appropriate packing member 23 is attached to this and the other end surface in the axial direction. What is important about the hollow portion of the telescopic cylinder 22 is that the inner diameter of the hollow portion is equal to the cooling cylinder C1.
Etc. are substantially the same diameter as the inside diameter of the passage of the optical fiber.
【０００７】つぎにこの連結筒２を用いて上下の冷却筒
Ｃ１とＣ２とを連結する仕方を説明する。まず伸縮筒体
２２ははじめに取付筒体２１の中空部のめねじ部２１Ａ
にねじ込んで破線に示すように短い状態にしておき、こ
の状態で下側の冷却筒Ｃ２に取付ねじ２１Ｂをねじ込ん
で固定する。こうしておいて、つぎにおねじ部２２Ａを
緩めて伸縮筒体２２を取付筒体２１から伸び出させ、端
面のパッキング部材２３が上側の冷却筒Ｃ１の下端面に
強く圧接するまで伸ばす。これで上下の両冷却筒Ｃ１と
Ｃ２との気密な連結作業が極めて簡単に終了するのであ
る。なお、光ファイバ１の線通しや、冷却筒内部の掃除
は上述とちょうど逆の手順によってこの連結筒２を取り
外して行う。Next, how to connect the upper and lower cooling cylinders C1 and C2 using the connecting cylinder 2 will be described. First, the telescopic cylinder 22 is firstly provided with a female thread 21A in the hollow portion of the mounting cylinder 21.
Into a short state as shown by the broken line, and in this state, the mounting screw 21B is screwed and fixed to the lower cooling cylinder C2. Then, the screw portion 22A is loosened so that the telescopic cylinder 22 extends from the mounting cylinder 21, and is extended until the packing member 23 on the end face is strongly pressed against the lower end face of the upper cooling cylinder C1. This completes the airtight connection between the upper and lower cooling cylinders C1 and C2 very easily. It should be noted that the connection of the optical fiber 1 and the cleaning of the inside of the cooling cylinder are performed by removing the connecting cylinder 2 in a procedure exactly reverse to the above.
【０００８】図３はこの発明に用いる連結筒の別の形式
を示すものであって、これでは伸縮筒体２２は取付筒体
２１に対してねじ係合ではなく、滑動自在に嵌められて
セットねじ７によって固定されるものである。この形式
の場合はパッキング部材２３としては軟質の厚いものが
好適である。この形式のものの着脱の仕方については自
明であろう。FIG. 3 shows another type of the connecting cylinder used in the present invention. In this embodiment, the telescopic cylinder 22 is slidably fitted to the mounting cylinder 21 instead of being screw-engaged. It is fixed by screws 7. In this case, the packing member 23 is preferably made of a soft and thick material. It will be obvious how to attach and remove this type of thing.
【０００９】[0009]
【発明の効果】この発明によれば、各冷却筒は連結筒に
よって気密に連結されるから、従来は外気を巻き込み導
入した冷却筒間の空隙部が完全になくなり、したがって
光ファイバの線引きの速度を上げても外気を導入するこ
ともなく冷却作業が効率的に実施できるとともに、良質
の光ファイバを製造できる効果がある。According to the present invention, since the cooling cylinders are air-tightly connected by the connecting cylinder, the gap between the cooling cylinders in which the outside air has been entrained and introduced in the past is completely eliminated, and therefore the speed of drawing the optical fiber is reduced. The cooling operation can be efficiently performed without introducing outside air even if the temperature is raised, and there is an effect that a high quality optical fiber can be manufactured.
【図１】この発明の一実施例を示す側断面図である。FIG. 1 is a side sectional view showing an embodiment of the present invention.
【図２】この発明の冷却筒間の連結に用いる連結筒を示
す拡大側断面図である。FIG. 2 is an enlarged sectional side view showing a connecting cylinder used for connecting cooling cylinders according to the present invention.
【図３】連結筒の別の形式のものを示す拡大側断面図で
ある。FIG. 3 is an enlarged side sectional view showing another type of connecting cylinder.
【図４】従来の光ファイバの線引装置の冷却筒を示す側
断面図である。FIG. 4 is a side sectional view showing a cooling cylinder of a conventional optical fiber drawing apparatus.
１ 光ファイバ Ｃ１，Ｃ２ 冷却筒 ２ 連結筒 ２１ 取付筒体 ２２ 伸縮筒体 DESCRIPTION OF SYMBOLS 1 Optical fiber C1, C2 Cooling cylinder 2 Connecting cylinder 21 Mounting cylinder 22 Telescopic cylinder
Claims (1)
方向に適宜の間隔をもって同軸的に直列に配置固定され
る複数の冷却筒（Ｃ１，Ｃ２，…）のうち隣接する２個
が、中空円柱状の取付筒体（２１）とこれに同軸的に係
合して嵌入伸び出し自在に取り付けられる中空円柱状の
伸縮筒体（２２）とからなる連結筒（２）によって気密
に連結される冷却装置を有する光ファイバの線引装置。1. An adjacent two of a plurality of cooling cylinders (C1, C2,...) Arranged and fixed coaxially in series at appropriate intervals in the vertical direction which is the running direction of the optical fiber (1). Are connected by a connecting cylinder (2) comprising a hollow cylindrical mounting cylinder (21) and a hollow cylindrical telescopic cylinder (22) coaxially engaged with the mounting cylinder (21) and fitted and extended freely. An optical fiber drawing device having a cooling device that is airtightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4023240A JP2793408B2 (en) | 1992-01-13 | 1992-01-13 | Optical fiber drawing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4023240A JP2793408B2 (en) | 1992-01-13 | 1992-01-13 | Optical fiber drawing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05186238A JPH05186238A (en) | 1993-07-27 |
| JP2793408B2 true JP2793408B2 (en) | 1998-09-03 |
Family
ID=12105087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4023240A Expired - Lifetime JP2793408B2 (en) | 1992-01-13 | 1992-01-13 | Optical fiber drawing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2793408B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1076045A3 (en) * | 1999-08-09 | 2001-05-16 | Lucent Technologies Inc. | Apparatus for cooling an optical fibre drawn from a preform |
| US6546758B1 (en) * | 2000-08-16 | 2003-04-15 | Alcatel | Multi-chamber fiber cooling apparatus |
| US20030205066A1 (en) * | 2002-03-25 | 2003-11-06 | Ghani M. Usman | Method and apparatus for efficient cooling of optical fiber during its manufacture |
| JP2011173733A (en) * | 2010-02-23 | 2011-09-08 | Fujikura Ltd | Extended tube for spinning machine and spinning machine |
| JP2011173734A (en) * | 2010-02-23 | 2011-09-08 | Fujikura Ltd | Extended tube for spinning machine and spinning machine |
| JP6291727B2 (en) * | 2013-05-30 | 2018-03-14 | 住友電気工業株式会社 | Glass fiber manufacturing apparatus and manufacturing method |
| CN105236732B (en) * | 2015-08-31 | 2017-10-24 | 中天科技光纤有限公司 | A kind of optical fiber drawing cooling system |
| JP6904235B2 (en) * | 2017-12-15 | 2021-07-14 | 住友電気工業株式会社 | Cooling device used for optical fiber drawing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2585779B2 (en) * | 1989-01-10 | 1997-02-26 | 住友電気工業株式会社 | Optical fiber cooling device and cooling method |
-
1992
- 1992-01-13 JP JP4023240A patent/JP2793408B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05186238A (en) | 1993-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2793408B2 (en) | Optical fiber drawing equipment | |
| EP0893405A2 (en) | Ozone generating apparatus | |
| ES2127815T3 (en) | FLEXIBLE TUBE JOINT. | |
| JPH0430763Y2 (en) | ||
| CA2242105A1 (en) | High-pressure discharge lamp with a cooled electrode | |
| CN212623652U (en) | Integrated control box of rolling system | |
| WO2021054694A1 (en) | Tube-shaped pleated filter member | |
| CN216815047U (en) | Internal air inlet device of sintering equipment | |
| JPS61174133A (en) | Production of optical fiber | |
| JP2675693B2 (en) | Cathode ray tube device | |
| RU96122347A (en) | THERMAL INSULATED COLUMN | |
| RU2805944C2 (en) | Light head for use in pipe lining | |
| CN217442372U (en) | Spray head group for air cooler spraying system | |
| JPS6236039A (en) | Optical fiber drawing furnace | |
| CN211804283U (en) | Tin point head | |
| JPH04371316A (en) | Construction for positioning cooling nozzle of metallic sheath extrusion machine | |
| JP2555437Y2 (en) | Fluorescent lighting equipment | |
| JPS60108819U (en) | cooling roller device | |
| JPH09139351A (en) | Tubular structure component made of transparent quartz glassfor semiconductor manufacturing | |
| KR880003729Y1 (en) | Cable tube | |
| SU1316845A1 (en) | Extruder screw with zonal cooling | |
| JPS6236306Y2 (en) | ||
| JPH02221136A (en) | Optical fiber drawing device | |
| SU1368057A1 (en) | Arrangement for cooling the moving rolled stock | |
| JPH01225896A (en) | Delivery pipe cooler device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080619 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090619 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090619 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100619 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100619 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110619 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110619 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120619 Year of fee payment: 14 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120619 Year of fee payment: 14 |