JP2673614B2 - Automatic output device for optical fiber preform - Google Patents
Automatic output device for optical fiber preformInfo
- Publication number
- JP2673614B2 JP2673614B2 JP20335991A JP20335991A JP2673614B2 JP 2673614 B2 JP2673614 B2 JP 2673614B2 JP 20335991 A JP20335991 A JP 20335991A JP 20335991 A JP20335991 A JP 20335991A JP 2673614 B2 JP2673614 B2 JP 2673614B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- base material
- fiber preform
- chuck
- lower chuck
- 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 - Fee Related
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
- C03B37/012—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]
- C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】この発明は光ファイバ母材の自動
口出し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 automatic feeding device for an optical fiber preform.
【０００２】[0002]
【従来の技術】図２について従来の光ファイバ母材の線
引き口出しについて説明する。この工程は周知のよう
に、光ファイバ母材１から線引きするためにその下端を
紡錘状に加工して線引きの端緒、つまり口出し部１Ａを
形成する工程であって、まずガラス用縦型旋盤の上部チ
ャック２に母材１の上端部を把持させて回転させる。つ
いで母材１の下端部をバーナ７で加熱して溶融状態と
し、この状態で下部チャック４に把持したダミー棒３を
母材１の下端に押し込み溶着させる。次いでバーナ７を
破線図示ぐらいの少し高い位置に上げて母材１のこの部
分を加熱溶融させ、その状態で下部チャック４を静かに
下方に引くと母材１は図示のように紡錘形に切断されて
口出し部１Ａが形成されるのである。2. Description of the Related Art A conventional drawing and drawing of an optical fiber preform will be described with reference to FIG. As is well known, this step is a step of processing the lower end of the optical fiber preform 1 into a spindle shape to form the starting point of the drawing, that is, the lead-out portion 1A. The upper chuck 2 holds the upper end of the base material 1 and rotates it. Then, the lower end of the base material 1 is heated by the burner 7 to be in a molten state, and in this state, the dummy rod 3 held by the lower chuck 4 is pushed into the lower end of the base material 1 and welded. Then, the burner 7 is raised to a position slightly higher than that shown by a broken line to heat and melt this portion of the base material 1, and then the lower chuck 4 is gently pulled downward to cut the base material 1 into a spindle shape as shown in the drawing. Thus, the lead-out portion 1A is formed.
【０００３】[0003]
【発明が解決しようとする課題】従来の口出し方法はす
べての作業者の手作業で行われるものであるため、熟練
を要するとともに出来上がりが一様にならない欠点があ
った。Since the conventional method of finding out is performed manually by all workers, it has the drawbacks that it requires skill and the finish is not uniform.
【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、光ファイバ母材
の線引きの口出しを自動的に実施できる自動装置を提供
するものであり、具体的には、線引き口出しすべき光フ
ァイバ母材の上部を把持して回転する上部チャックと、
前記母材の下方において前記上部チャックと同軸的に配
置されるダミー棒を把持して鉛直方向に可動に設けられ
る下部チャックと、前記下部チャックを鉛直方向に搬送
するコンベア装置と、母材加熱用のバーナおよびこのバ
ーナを前記母材に平行に往復動させるトラバース装置
と、前記下部チャックの回転を検知する近接スイッチ
と、前記下部チャックの移動距離を測定検知する移動量
検知装置とを有することを特徴とする光ファイバ母材の
自動口出し装置である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides an automatic device capable of automatically performing drawing out of the drawing of an optical fiber preform. Specifically, an upper chuck that grips and rotates the upper portion of the optical fiber preform to be drawn out, and
A lower chuck movably provided in the vertical direction by holding a dummy rod coaxially arranged with the upper chuck below the base material, a conveyor device for vertically conveying the lower chuck, and a base material heating device. And a traverse device that reciprocates the burner in parallel with the base material, a proximity switch that detects the rotation of the lower chuck, and a movement amount detection device that measures and detects the moving distance of the lower chuck. This is a device for automatically feeding out the characteristic optical fiber preform.
【０００５】[0005]
【作用】ダミー棒は自動的に光ファイバ母材の下端に取
り付けられ、その取付け部よりやや上方の光ファイバ母
材部分の加熱溶融ならびにダミー棒の引き下げも自動的
に実施され、かくして口出しが自動的になされる。[Function] The dummy rod is automatically attached to the lower end of the optical fiber preform, and the heating and melting of the optical fiber preform part slightly above the attaching part and the pulling down of the dummy rod are also automatically carried out, and thus, the automatic ejection is performed. To be done.
【０００６】[0006]
【実施例】図１についてこの発明の一実施例を説明す
る。符号２は光ファイバ母材１の上部を把持する上部チ
ャックであって駆動モータ２Ａによって回転駆動され
る。母材１の下方の、上部チャック２と同軸位置には下
部チャック４が配置されダミー棒３を把持する。下部チ
ャック４は鉛直方向に移動する、たとえばチェインコン
ベアのようなコンベア装置５に固着されて上、下に搬送
移送される。コンベア装置５を駆動する駆動モータは５
Ａであり、一方のスプロケット車５１の軸にはたとえば
ろーたりエンコーダのようなそのコンベア装置５による
移動量検知装置６が設けられる。また母材１と平行に鉛
直に延び、駆動モータ８Ａによって回転駆動される確動
カム軸を含むトラバース装置８が併設され、光ファイバ
母材１の加熱用のバーナ７がこれにより往復動が与えら
れる。さらに下部チャック４の回転を検知するための近
接スイッチ９が取り付けられると共に、駆動モータ８Ａ
の回転、停止を司る近接スイッチ１０も設けられる。し
かして移動量検知装置６や近接スイッチ９，１０、また
駆動モータ２Ａ，５ＡとマイコンのＣＰＵとは制御用信
号回路によって連結されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. Reference numeral 2 is an upper chuck that holds the upper portion of the optical fiber preform 1 and is rotationally driven by the drive motor 2A. A lower chuck 4 is disposed below the base material 1 at a position coaxial with the upper chuck 2 and holds the dummy rod 3. The lower chuck 4 is vertically moved, and is fixed to a conveyor device 5 such as a chain conveyor, and is conveyed and transferred upward and downward. The drive motor for driving the conveyor device 5 is 5
A, a shaft of one sprocket wheel 51 is provided with a movement amount detecting device 6 by the conveyor device 5 such as a roller or an encoder. Further, a traverse device 8 including a positive cam shaft that extends vertically in parallel with the base material 1 and is rotationally driven by a drive motor 8A is provided side by side, and a burner 7 for heating the optical fiber base material 1 reciprocates by this. To be Further, a proximity switch 9 for detecting the rotation of the lower chuck 4 is attached, and a drive motor 8A
A proximity switch 10 that controls the rotation and stop of is also provided. Therefore, the movement amount detection device 6, the proximity switches 9 and 10, the drive motors 2A and 5A, and the CPU of the microcomputer are connected by a control signal circuit.
【０００７】つぎにこの発明装置による母材１の口出し
工程を説明する。まず母材１を上部チャック２に把持さ
せ、駆動モータ２Ａは回転させておく。またバーナ７は
この母材１の下端付近に位置するようあらかじめトラバ
ース装置８をセットする。コンベア装置５を作動させて
ダミー棒３を上方に移動させて母材１の下端に接触させ
る。これは移動量検知装置６によってダミー棒３の上方
への移動長さを制御することによって容易である。この
後ある程度母材１の下端部の加熱が進むと、この下端部
が溶融してダミー棒３と接合する。この接合完了は下部
チャック４が上部チャック２と同時に回転しはじめるこ
とによって近接スイッチ９により検知され、ＣＰＵに信
号が送られる。Next, the step of exposing the base material 1 by the apparatus of the present invention will be described. First, the base material 1 is held by the upper chuck 2, and the drive motor 2A is rotated. Further, the traverse device 8 is set in advance so that the burner 7 is located near the lower end of the base material 1. The conveyor device 5 is operated to move the dummy rod 3 upward so that the lower end of the base material 1 is brought into contact with the dummy rod 3. This is facilitated by controlling the moving length of the dummy rod 3 upward by the movement amount detecting device 6. After this, when the heating of the lower end of the base material 1 proceeds to some extent, the lower end melts and joins with the dummy rod 3. The completion of bonding is detected by the proximity switch 9 when the lower chuck 4 starts to rotate simultaneously with the upper chuck 2, and a signal is sent to the CPU.
【０００８】ダミー棒３の母材１の下端部への接合が終
わると、バーナ７の火勢を一旦弱めながらそのバーナ７
を、近接スイッチ１０に信号を送って駆動モータ８Ａを
回転させることによりやや上方に移動させる。母材１の
下端部の冷却とともにダミー棒３の接合状態が固定する
のを待って（この待ち時間はあらかじめマイコンに設定
される）、バーナ７により母材下端部よりやや上の口出
し位置付近を加熱溶融させる。予知される溶融開始時期
を待って（この待ち時間についても前と同じくあらかじ
め設定される）、コンベア装置５により下部チャック４
を下方にゆっくり移動させる。移動量がだんだん大きく
なるにつれて母材１の加熱部分は紡錘形に変化し、つい
に切断して図示のような口出し部１Ａが形成される。こ
の口出し部１Ａの形成完了は下部チャックに回転の完全
停止によって近接スイッチ９により検知される。この後
はＣＰＵから指令を出して駆動モータ２Ａを停止させ、
ここに全工程が完了する。When the joining of the dummy rod 3 to the lower end portion of the base material 1 is completed, the burner 7 is temporarily weakened while the burner 7 is being weakened.
Is moved slightly upward by sending a signal to the proximity switch 10 to rotate the drive motor 8A. After the lower end of the base metal 1 is cooled and the joined state of the dummy rod 3 is fixed (this waiting time is set in advance in the microcomputer), the burner 7 is used to move the end of the base metal slightly above the lower end of the base metal. Heat and melt. After waiting for the predicted melting start time (this waiting time is also set in advance as before), the lower chuck 4 is moved by the conveyor device 5.
Slowly move downwards. As the amount of movement gradually increases, the heated portion of the base material 1 changes into a spindle shape and is finally cut to form the lead-out portion 1A as shown in the drawing. The completion of the formation of the lead-out portion 1A is detected by the proximity switch 9 when the lower chuck completely stops its rotation. After this, the CPU issues a command to stop the drive motor 2A,
The whole process is completed here.
【０００９】[0009]
【発明の効果】この発明によれば、従来作業者が手作業
によって行っていた光ファイバ母材の口出し作業が完全
に自動的に実施でき、常に一様な良好な口出し部を得る
ことができる利点がある。As described above, according to the present invention, the work of finding the optical fiber preform, which has conventionally been done manually by an operator, can be carried out completely automatically, and a uniform and good finding part can always be obtained. There are advantages.
【図１】この発明の一実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.
【図２】従来の光ファイバ母材の口出し作業を説明する
簡略側面図である。FIG. 2 is a simplified side view for explaining a conventional work for exposing an optical fiber preform.
１ 光ファイバ母材 ２ 上部チャック ３ ダミー棒 ４ 下部チャック ５ コンベア装置 ６ 移動量検知装置 ７ バーナ ８ トラバース装置 ９，１０ 近接スイッチ 1 Optical Fiber Base Material 2 Upper Chuck 3 Dummy Rod 4 Lower Chuck 5 Conveyor Device 6 Moving Distance Detection Device 7 Burner 8 Traverse Device 9, 10 Proximity Switch
Claims (1)
（１）の上部を把持して回転する上部チャック（２）
と、前記母材（１）の下方において前記上部チャック
（２）と同軸的に配置されるダミー棒（３）を把持して
鉛直方向に可動に設けられる下部チャック（４）と、前
記下部チャック（４）を鉛直方向に搬送するコンベア装
置（５）と、母材加熱用のバーナ（７）およびこのバー
ナ（７）を前記母材（１）に平行に往復動させるトラバ
ース装置（８）と、前記下部チャック（４）の回転を検
知する近接スイッチ（９）と、前記下部チャック（４）
の移動距離を測定検知する移動量検知装置（６）とを有
することを特徴とする光ファイバ母材の自動口出し装
置。1. An upper chuck (2) for holding and rotating an upper portion of an optical fiber preform (1) to be drawn out.
A lower chuck (4) movably provided in the vertical direction by gripping a dummy rod (3) arranged coaxially with the upper chuck (2) below the base material (1), and the lower chuck. A conveyor device (5) for vertically transporting (4), a burner (7) for heating the base material, and a traverse device (8) for reciprocating the burner (7) in parallel with the base material (1). A proximity switch (9) for detecting the rotation of the lower chuck (4), and the lower chuck (4)
And a moving amount detecting device (6) for measuring and detecting the moving distance of the optical fiber preform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20335991A JP2673614B2 (en) | 1991-07-19 | 1991-07-19 | Automatic output device for optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20335991A JP2673614B2 (en) | 1991-07-19 | 1991-07-19 | Automatic output device for optical fiber preform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0524877A JPH0524877A (en) | 1993-02-02 |
| JP2673614B2 true JP2673614B2 (en) | 1997-11-05 |
Family
ID=16472728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20335991A Expired - Fee Related JP2673614B2 (en) | 1991-07-19 | 1991-07-19 | Automatic output device for optical fiber preform |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2673614B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19914507A1 (en) * | 1999-03-30 | 2000-10-05 | Siecor Fertigungsgesellschaft | Heat treatment equipment, especially for heating an optical glass fiber preform, comprises a heating chamber with a top inlet, a bottom outlet and one or more side burner openings |
| US6305195B1 (en) | 1999-05-27 | 2001-10-23 | Agere Systems Guardian Corp. | Process for fabricating silica article involving joining of discrete bodies |
| JP6426478B2 (en) | 2014-01-31 | 2018-11-21 | 信越化学工業株式会社 | Method and apparatus for processing glass rod |
| JP6302833B2 (en) | 2014-12-26 | 2018-03-28 | 信越化学工業株式会社 | Glass rod drawing method |
| JP2017171549A (en) | 2016-03-25 | 2017-09-28 | 信越化学工業株式会社 | Optical fiber preform contraction processing method, and processing device |
| CN109226304B (en) * | 2017-02-27 | 2020-04-10 | 天津富通集团有限公司 | Preform processing method |
| JP6691881B2 (en) | 2017-03-01 | 2020-05-13 | 信越化学工業株式会社 | Method and apparatus for manufacturing optical fiber preform for drawing |
-
1991
- 1991-07-19 JP JP20335991A patent/JP2673614B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524877A (en) | 1993-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |