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DE4009484A1 - Horizontal optical fibre drawing appts. - with drawing tube or rod welded to preform - Google Patents

Horizontal optical fibre drawing appts. - with drawing tube or rod welded to preform

Info

Publication number
DE4009484A1
DE4009484A1 DE19904009484 DE4009484A DE4009484A1 DE 4009484 A1 DE4009484 A1 DE 4009484A1 DE 19904009484 DE19904009484 DE 19904009484 DE 4009484 A DE4009484 A DE 4009484A DE 4009484 A1 DE4009484 A1 DE 4009484A1
Authority
DE
Germany
Prior art keywords
preform
tube
auxiliary
appts
optical fibre
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.)
Withdrawn
Application number
DE19904009484
Other languages
German (de)
Inventor
Hans-Dieter Dipl Ing Bickel
Josef Dr Faustmann
Hans-Matthias Dipl Ing Horn
Guenter Dipl Ing Wuensch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to DE19904009484 priority Critical patent/DE4009484A1/en
Publication of DE4009484A1 publication Critical patent/DE4009484A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/02Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025Manufacture 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
    • C03B37/027Fibres composed of different sorts of glass, e.g. glass optical fibres
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/02Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025Manufacture 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
    • C03B37/027Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C03B37/02736Means 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
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/02Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025Manufacture 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
    • C03B37/029Furnaces therefor
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00Fibre drawing or extruding details
    • C03B2205/04Non-vertical drawing
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00Fibre drawing or extruding details
    • C03B2205/60Optical fibre draw furnaces
    • C03B2205/62Heating means for drawing
    • C03B2205/64Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type

Landscapes

  • Engineering & Computer Science (AREA)
  • 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)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

Appts. (10), for drawing optical fibres from a hot preform (12), is arranged horizontally and is associated with an auxiliary drawing tube or rod (22) which is welded to the preform (12).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Ziehen von optischen Fasern aus einer warmen Vorform, die in einer Halterung gelagert und von einer Heizeinrichtung umgeben ist.The invention relates to a device for pulling optical fibers from a warm preform, which in a Mounted bracket and is surrounded by a heater.

Beim Ziehen von optischen Fasern wird von einer warmen Vorform ausgegangen, aus der sich unter dem Einfluß der Gravitation ein Tropfen löst, der eine sogenannte Ziehzwiebel ausbildet, die zu dem erwünschten Faden ausgezogen wird. Dieser Umstand bedingt, daß alle bekannten Ziehvorrichtungen für optische Fasern mit einer senkrecht ausgebildeten Ziehanordnung arbeiten, die in Form eines Ziehturmes beachtliche Bauhöhen erfordert (Buch.: Lichtwellenleiterkabel S. 95+96, Mahlke/Gössing, 2. Aufl. 1988, Siemens AG).When pulling optical fibers, a warm preform is used assumed that under the influence of gravity Solves drops, which forms a so-called onion, the is pulled out to the desired thread. This fact means that all known pullers for optical fibers with a vertically trained drawing arrangement work in The shape of a drawing tower requires considerable heights (book: Fiber optic cable p. 95 + 96, Mahlke / Gössing, 2nd ed. 1988, Siemens AG).

Der Erfindung liegt die Aufgabe zugrunde, den Ziehvorgang ohne die Notwendigkeit hoher Ziehtürme abwickeln zu können. Zur Lösung dieser Aufgabe wird gemäß der Erfindung vorgeschlagen, daß der horizontal angeordneten Vorrichtung zum Ziehen in Abzugsrichtung ein Hilfsrohr/Hilfsstab zugeordnet ist, das/der an der Vorform anschweißbar ausgebildet ist.The invention has for its object the drawing process without to be able to handle the need for high towers. To This object is proposed according to the invention, that the horizontally arranged device for pulling in Withdrawal direction is associated with an auxiliary tube / auxiliary rod is weldable to the preform.

Auf diese Weise kann die schwierige Phase des Anfahrens durch das Hilfsrohr/Hilfsstab eingeleitet werden, indem das Rohr bzw. der Stab nach dem Anschweißen mit der Vorform unter synchronem Drehen langsam von dieser abgezogen wird.This way, the difficult start-up phase can be overcome the auxiliary tube / auxiliary rod are introduced by the tube or the rod after welding with the preform under synchronous Rotating slowly pulling it off.

Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, daß das Hilfsrohr mit einer Absaugeinrichtung beaufschlagt ist, die in der Lage ist, in dem Hilfsrohr einen Unterdruck zu schaffen.An advantageous embodiment of the invention consists in that the auxiliary pipe is acted upon by a suction device, which is able to create a negative pressure in the auxiliary pipe create.

Eine weitere Ausgestaltung der Erfindung besteht darin, daß das Hilfsrohr/der Hilfsstab aus der Abzugslinie ausschwenkbar ausgebildet ist, so daß man ungestört durch das Hilfsrohr bzw. den Hilfsstab zur eigentlichen Fertigungsphase übergehen kann, wenn der abgezogene Glasfaden die gewünschten Dimensionen ange­ nommen hat und bei geeigneter Temperatur mit Coating versehen wird.Another embodiment of the invention is that  Auxiliary tube / the auxiliary rod can be swung out of the withdrawal line is designed so that you can undisturbed by the auxiliary tube or the auxiliary staff can go to the actual manufacturing phase, when the stripped glass thread indicates the desired dimensions has taken and coated at a suitable temperature becomes.

Eine bevorzugte Ausführungsform der Erfindung besteht darin, daß die Achse der Vorform gegenüber der Horizontalen ein wenig geneigt angeordnet ist, wobei der Neigungswinkel der Größe des Anfangswinkels der Kettenlinie entspricht. Da jede horizontal gespannte Seite o. dergl. aufgrund der Schwerkraft etwas durch­ hängt und die bekannte Kettenlinie bildet, kann man durch diese Neigung der Achse einem Abknicken der Faser vorbeugen.A preferred embodiment of the invention consists in that the axis of the preform is a little bit horizontal is arranged inclined, the angle of inclination of the size of the Starting angle of the chain line corresponds. Because each is horizontal tense side or the like due to gravity hangs and forms the well-known chain line, you can through this Prevent the axis from tilting to prevent the fiber from kinking.

Die Erfindung wird anhand des in der Zeichnung dargestellten und nachfolgend beschriebenen Ausführungsbeispiels im einzelnen erläutert: In der Zeichnung zeigtThe invention is illustrated by the in the drawing and the exemplary embodiment described below in detail explains: In the drawing shows

Fig. 1 eine Seitenansicht (teilweise geschnitten) der horizontal eingerichteten Vorrichtung zum Ziehen und Fig. 1 is a side view (partially cut) of the horizontally arranged device for pulling and

Fig. 2 in vergrößerter Darstellung die Vorform und das anzuschweißende Hilfsrohr. Fig. 2 in an enlarged view the preform and the auxiliary pipe to be welded.

Die in Fig. 1 in Seitenansicht dargestellte Vorrichtung 10 zum Ziehen besteht im wesentlichen aus einer tischartigen Stütze 15, einer Halterung 14 und einer Einrichtung 13 zum Drehen der darin eingespannten Vorform 12, die in einer Heizeinrichtung 11 hineinragt. Die Halterung 14 ist gegenüber der Horizontalen derart geneigt angeordnet, daß ihr Neigungswinkel der Größe des Anfangswinkels der Kettenlinie entspricht, die der abzuziehende Faden 21 bildet.The drawing device 10 shown in side view in FIG. 1 essentially consists of a table-like support 15 , a holder 14 and a device 13 for rotating the preform 12 clamped therein, which protrudes into a heating device 11 . The holder 14 is arranged inclined with respect to the horizontal such that its angle of inclination corresponds to the size of the starting angle of the chain line which the thread 21 to be drawn off forms.

Gegenüber dieser Vorrichtung ist auf einer ebenfalls tisch­ artigen Stütze 25 ein Hilfsrohr 22 in einer Einrichtung 23 zum Drehen des Hilfsrohres eingespannt. Die tischartige Stütze ist dabei verfahrbar ausgebildet, so daß das Hilfsrohr 22 nach dem Anschweißen von der Vorform 12 abgezogen werden kann. Das Hilfs­ rohr 22 ist um einen Drehpunkt 20 schwenkbar gelagert, so daß es nach Erreichen der gewünschten Dimensionen des Fadens 21 aus der Fertigungslinie herausgeklappt werden kann.Compared to this device, an auxiliary tube 22 is clamped in a device 23 for rotating the auxiliary tube on a table-like support 25 . The table-like support is designed to be movable so that the auxiliary tube 22 can be removed from the preform 12 after welding. The auxiliary tube 22 is pivotally mounted about a pivot point 20 so that it can be folded out of the production line after reaching the desired dimensions of the thread 21 .

Fig. 2 zeigt schematisch die Vorform 12, die durch ihren Her­ stellungsvorgang bedingt, eine Spitze 12a aufweist, in deren Bereich das Hilfsrohr 22 angeschweißt wird. Fig. 2 shows schematically the preform 12 , which is due to its manufacturing process, has a tip 12 a, in the area of which the auxiliary tube 22 is welded.

Claims (4)

1. Vorrichtung zum Ziehen von optischen Fasern aus einer warmen Vorform, die in einer Halterung gelagert und von einer Heizeinrichtung umgeben ist, dadurch gekennzeichnet, daß der horizontal angeordneten Vorrichtung (10) zum Ziehen in Abzugsrichtung ein Hilfsrohr/Hilfsstab (22) zugeordnet ist, das/der an der Vorform (12) anschweißbar ausgebildet ist.1. A device for drawing optical fibers from a warm preform, which is mounted in a holder and is surrounded by a heating device, characterized in that an auxiliary tube / auxiliary rod ( 22 ) is assigned to the horizontally arranged device ( 10 ) for drawing in the withdrawal direction. that is designed to be weldable to the preform ( 12 ). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Hilfsrohr (22) mit einer Absaugeinrichtung beaufschlagt ist.2. Device according to claim 1, characterized in that the auxiliary tube ( 22 ) is acted upon by a suction device. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Hilfsrohr/der Hilfsstab (22) aus der Abzugslinie ausschwenk­ bar ausgebildet ist.3. Apparatus according to claim 1 or 2, characterized in that the auxiliary tube / the auxiliary rod ( 22 ) is designed to swing out of the withdrawal line bar. 4. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Achse der Vorform (12) gegenüber der Horizontalen ein wenig geneigt angeordnet ist, wobei der Neigungswinkel der Größe des Anfangswinkels der Kettenlinie entspricht.4. Apparatus according to claim 1, 2 or 3, characterized in that the axis of the preform ( 12 ) is arranged slightly inclined to the horizontal, the angle of inclination corresponding to the size of the starting angle of the chain line.
DE19904009484 1990-03-22 1990-03-22 Horizontal optical fibre drawing appts. - with drawing tube or rod welded to preform Withdrawn DE4009484A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904009484 DE4009484A1 (en) 1990-03-22 1990-03-22 Horizontal optical fibre drawing appts. - with drawing tube or rod welded to preform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904009484 DE4009484A1 (en) 1990-03-22 1990-03-22 Horizontal optical fibre drawing appts. - with drawing tube or rod welded to preform

Publications (1)

Publication Number Publication Date
DE4009484A1 true DE4009484A1 (en) 1991-09-26

Family

ID=6402970

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904009484 Withdrawn DE4009484A1 (en) 1990-03-22 1990-03-22 Horizontal optical fibre drawing appts. - with drawing tube or rod welded to preform

Country Status (1)

Country Link
DE (1) DE4009484A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6848276B2 (en) * 1998-11-05 2005-02-01 Shin-Etsu Chemical Co., Ltd. Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus
US7290408B1 (en) * 1994-11-08 2007-11-06 Draka Comteq B.V. Apparatus for supporting a preform having a supporting core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7290408B1 (en) * 1994-11-08 2007-11-06 Draka Comteq B.V. Apparatus for supporting a preform having a supporting core
US6848276B2 (en) * 1998-11-05 2005-02-01 Shin-Etsu Chemical Co., Ltd. Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus

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