JPS58660Y2 - Optical fiber material manufacturing equipment - Google Patents
Optical fiber material manufacturing equipmentInfo
- Publication number
- JPS58660Y2 JPS58660Y2 JP1978080266U JP8026678U JPS58660Y2 JP S58660 Y2 JPS58660 Y2 JP S58660Y2 JP 1978080266 U JP1978080266 U JP 1978080266U JP 8026678 U JP8026678 U JP 8026678U JP S58660 Y2 JPS58660 Y2 JP S58660Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber material
- container
- opening
- rod
- 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
Links
Landscapes
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
【考案の詳細な説明】
本考案は、管状の光フアイバ素材を加熱溶融して棒状の
光フアイバ素材とする光フアイバ素材の製造装置に関す
るものである。[Detailed Description of the Invention] The present invention relates to an apparatus for manufacturing an optical fiber material, which heats and melts a tubular optical fiber material to produce a rod-shaped optical fiber material.
従来の光フアイバ素材の製造装置においては、第１図ａ
、ｌ）に示すように、内壁に光フアイバガラスを堆積し
た管状の光フアイバ素材］を、容器３内の発熱体２で加
熱溶融し、空隙のない棒状ガラス素材７に加工するもの
で、容器３内には導入口５から酸化性気体を含まない気
体が供給され、容器３内を非酸化雰囲気に保持している
。In the conventional optical fiber material manufacturing equipment, Fig. 1a
, l), a tubular optical fiber material with optical fiber glass deposited on the inner wall is heated and melted by a heating element 2 in a container 3, and processed into a rod-shaped glass material 7 without voids. A gas not containing oxidizing gas is supplied into the container 3 from an inlet 5 to maintain the inside of the container 3 in a non-oxidizing atmosphere.
しかし棒状ガラス素材７は空隙がない状態に縮径され、
管状の光フアイバ素材１より径が小さくなるから、容器
３の開口部との間の間隙が大きくなり、外部の空気が発
熱体２の部分に流入して、発熱体２の劣化が生じる欠点
があった。However, the diameter of the rod-shaped glass material 7 is reduced so that there are no voids,
Since the diameter is smaller than that of the tubular optical fiber material 1, the gap between it and the opening of the container 3 becomes larger, which causes outside air to flow into the heating element 2, causing deterioration of the heating element 2. there were.
本考案は、前述のような欠点を改善するためのものであ
り、管状の光フアイバ素材から棒状ガラス素材にその外
径が縮径されても、容器の開口部との間の間隙を小さく
して、容器内を酸化性雰囲気とならないようにすること
を目的とするものである。The present invention is intended to improve the above-mentioned drawbacks, and even if the outer diameter of the optical fiber material is reduced from a tubular optical fiber material to a rod-like glass material, the gap between the material and the opening of the container can be reduced. The purpose of this is to prevent an oxidizing atmosphere from forming inside the container.
以下実施例について詳細に説明する。第２図ａ、ｌ）は
本考案の実施例の概略説明図であり、１は内壁に光フア
イバガラスが堆積された管状の光フアイバ素材、２は加
熱体、３は発熱体を酸化性雰囲気を含まない雰囲気に保
つための容器、４は開口部、５は酸化性気体を含まない
気体を導入して容器３内を非酸化性の雰囲気に保持する
ための気体の導入口、６は容器３の開口部４の内径を調
節する機構部である。Examples will be described in detail below. Figures 2a and l) are schematic explanatory diagrams of an embodiment of the present invention, in which 1 is a tubular optical fiber material with optical fiber glass deposited on its inner wall, 2 is a heating element, and 3 is a heating element placed in an oxidizing atmosphere. 4 is an opening, 5 is a gas inlet for introducing a gas that does not contain oxidizing gas to maintain a non-oxidizing atmosphere inside the container 3, and 6 is a container. This is a mechanism part that adjusts the inner diameter of the opening 4 of No. 3.
この機構部６により第２図すに示すように、棒状ガラス
素材７の外径が小さくなっても、容器３の開口部４をそ
れに対応して小さくすることができるので、容器３内に
外部の空気が流入することがなくなる。With this mechanism part 6, as shown in FIG. air will no longer flow in.
即ち容器３内を酸化性気体を含まない雰囲気に保持する
ことができる。That is, the inside of the container 3 can be maintained in an atmosphere that does not contain oxidizing gas.
第３図は機構部６の一例を示すもので、写真機の絞りに
類似した構成を有するものであり、１１は開閉弁、１２
は回転枠、１３は開孔部である。FIG. 3 shows an example of the mechanism section 6, which has a configuration similar to the aperture of a camera, in which 11 is an on-off valve, and 12 is an on-off valve.
1 is a rotating frame, and 13 is an opening.
従って、容器３の開口部４から導出される棒状ガラス素
材７の外径に応じて、回転枠１２を回動することにより
、開孔部１３の内径が半径方向に調整され、棒状ガラス
素材７との間の間隙を小さくすることができる。Therefore, by rotating the rotary frame 12 according to the outer diameter of the rod-shaped glass material 7 led out from the opening 4 of the container 3, the inner diameter of the opening 13 is adjusted in the radial direction, and the rod-shaped glass material 7 is adjusted in the radial direction. The gap between the two can be reduced.
第４図は、機構部６を自動調節する場合の実施例を示す
ものであり、イは機構部の正面図、口は概略側面図であ
る。FIG. 4 shows an embodiment in which the mechanism section 6 is automatically adjusted, and A is a front view of the mechanism section, and the opening is a schematic side view.
棒状ガラス素材１４は例えば直径１０〜２０ ｍｍで、
機構部の自動調節により間隙１５を１ｍｍ程度にするこ
とができる。The rod-shaped glass material 14 has a diameter of 10 to 20 mm, for example.
The gap 15 can be made approximately 1 mm by automatic adjustment of the mechanism.
この間隙１５を更に小さくすれば、容器内へ流入する空
気を更に少なくすることができる。By making this gap 15 even smaller, the amount of air flowing into the container can be further reduced.
外径測定器１６で測定した素材の外径情報を、変換駆動
装置１７に加えて、モータ１８を駆動し、このモータ１
８により第３図に示すような機構部６の回転枠１２を回
転して、間隙１５が所定の範囲となるように自動調節す
ることができる。The outer diameter information of the material measured by the outer diameter measuring device 16 is added to the conversion drive device 17 to drive the motor 18.
8 allows the rotating frame 12 of the mechanism section 6 as shown in FIG. 3 to be rotated to automatically adjust the gap 15 within a predetermined range.
外径測定器１６は周知の接触形や非接触形等の任意の構
成の測定器を用いることができる。As the outer diameter measuring device 16, a measuring device having an arbitrary configuration such as a known contact type or non-contact type can be used.
前述のような本考案の構成により、管状の光フアイバ素
材を２０００℃程度の高温に加熱して、空隙のない棒状
ガラス素材としたとき、その棒状ガラス素材の直径は、
管状の光フアイバ素材の直径よりも小さくなるが、機構
部６により容器３の開口部４の内径を小さくすることが
できるので、間隙を小さくすることができ、外部の空気
の流入を阻止することができた。With the configuration of the present invention as described above, when a tubular optical fiber material is heated to a high temperature of about 2000°C to form a rod-shaped glass material without voids, the diameter of the rod-shaped glass material is as follows.
Although it is smaller than the diameter of the tubular optical fiber material, the inner diameter of the opening 4 of the container 3 can be made smaller by the mechanism part 6, so the gap can be made smaller and the inflow of outside air can be prevented. was completed.
それにより、従来の構成では２０時間程度の使用時間で
発熱体の劣化が大きいものであったが、本考案の構成で
は５０時間程度の使用でも発熱体の劣化は少なく、使用
が可能であった。As a result, in the conventional configuration, the heating element deteriorated significantly after about 20 hours of use, but with the configuration of the present invention, the heating element did not deteriorate much even after about 50 hours of use, and it was possible to use it. .
以上説明したように、本考案によれば、発熱体の劣化を
防止することができ、且つ連続的に加熱溶融により棒状
ガラス素材に加工することができる利点がある。As explained above, the present invention has the advantage that deterioration of the heating element can be prevented and that it can be continuously processed into a rod-shaped glass material by heating and melting.
第１図ａ、ｌ）は従来の光フアイバ素材の製造装置の概
略説明図、第２図ａ、ｂは本考案の一実施例例の概略説
明図、第３図は本考案の機構部の一例の説明図、第４図
イ９口は本考案の他の実施例の機構部の正面図及び概略
側面図である。
１は内壁に光フアイバガラスが堆積された管状の光フア
イバ素材、２は加熱体、３は容器、４は開口部、５は酸
化性気体を含まない気体の導入口、６は開口部の内径を
調節する機構部、７は棒状ガラス素材、１１は開閉弁、
１２は回転枠、１３は開孔部、１６は外径測定器、１７
は変換駆動装置、１８は機構部の内径調節用のモータで
ある。Figures 1a and 1) are schematic explanatory diagrams of a conventional optical fiber material manufacturing apparatus, Figures 2a and b are schematic diagrams of an embodiment of the present invention, and Figure 3 is a schematic diagram of the mechanical part of the present invention. An explanatory diagram of an example, FIG. 4A-9 is a front view and a schematic side view of a mechanism section of another embodiment of the present invention. 1 is a tubular optical fiber material with optical fiber glass deposited on its inner wall, 2 is a heating element, 3 is a container, 4 is an opening, 5 is an inlet for gas that does not contain oxidizing gas, and 6 is the inner diameter of the opening. 7 is a rod-shaped glass material, 11 is an on-off valve,
12 is a rotating frame, 13 is an opening, 16 is an outer diameter measuring device, 17
18 is a conversion drive device, and 18 is a motor for adjusting the inner diameter of the mechanism.
Claims (1)
素材を加熱溶融し空隙のない棒状ガラス素材に加工する
ための発熱体と、該発熱体の梢耗を防ぐために前記発熱
体を酸化性気体を含まない雰囲気に保つ容器とを含む光
フアイバ素材の製造装置において、前記容器の開口部付
近における前記管状の光フアイバ素材から前記棒状ガラ
ス素材にその外径が縮径された程度に前記容器の開口部
内径を半径方向に小さく調整する機構部を設けたことを
特徴とする光フアイバ素材の製造装置。A heating element for heating and melting a tubular optical fiber material with optical fiber glass deposited on the inner wall to process it into a rod-shaped glass material without voids, and an oxidizing gas to prevent the heating element from being worn out. and a container maintained in a free atmosphere, the opening of the container being reduced in outer diameter from the tubular optical fiber material to the rod-shaped glass material near the opening of the container. An apparatus for manufacturing an optical fiber material, characterized in that it is provided with a mechanism section for adjusting the inner diameter of the section to a smaller value in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978080266U JPS58660Y2 (en) | 1978-06-12 | 1978-06-12 | Optical fiber material manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978080266U JPS58660Y2 (en) | 1978-06-12 | 1978-06-12 | Optical fiber material manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54180462U JPS54180462U (en) | 1979-12-20 |
| JPS58660Y2 true JPS58660Y2 (en) | 1983-01-07 |
Family
ID=28999014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978080266U Expired JPS58660Y2 (en) | 1978-06-12 | 1978-06-12 | Optical fiber material manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58660Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100653010B1 (en) | 2004-12-03 | 2006-12-01 | 엘에스전선 주식회사 | Furnace for manufacturing optical fiber preform, preventing oxidation of heating element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52103843U (en) * | 1976-02-04 | 1977-08-06 |
-
1978
- 1978-06-12 JP JP1978080266U patent/JPS58660Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54180462U (en) | 1979-12-20 |
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