DE3924287A1 - Optical fibre drawing appts. - with min. vibration of preform feed device - Google Patents
Optical fibre drawing appts. - with min. vibration of preform feed deviceInfo
- Publication number
- DE3924287A1 DE3924287A1 DE19893924287 DE3924287A DE3924287A1 DE 3924287 A1 DE3924287 A1 DE 3924287A1 DE 19893924287 DE19893924287 DE 19893924287 DE 3924287 A DE3924287 A DE 3924287A DE 3924287 A1 DE3924287 A1 DE 3924287A1
- Authority
- DE
- Germany
- Prior art keywords
- preform
- spindle
- vibration
- spindle nut
- feed device
- 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- Withdrawn
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
- C03B37/02736—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
- 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)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
Bei der Herstellung von Glasfasern, die als Lichtwel lenleiter dienen, werden die Glasfasern bekanntlich durch Ziehen aus einer Vorform (Glasstab oder Glasrohr) hergestellt. Die Vorform besteht aus Kern- und Mantel material. Voraussetzung für das Ziehen ist, daß die Vorform in demjenigen Bereich, in dem der Ziehvorgang beginnt, geschmolzen wird. Das Schmelzen wird durch eine Wärmequelle bewirkt. Die Wärmequelle ist im allge meinen stationär angeordnet. Eine stationäre Anordnung der Wärmequelle bedingt, daß die Vorform, aus der die Glasfaser gezogen wird, ständig nachgeführt wird. Dabei muß die Nachführgeschwindigkeit in einem bestimmten Verhältnis zur Ziehgeschwindigkeit stehen.In the production of glass fibers, which are used as light wel Serve lenleiter, the glass fibers are known by pulling from a preform (glass rod or glass tube) produced. The preform consists of core and jacket material. The prerequisite for pulling is that the Preform in the area where the drawing process begins to melt. The melting is through causes a heat source. The heat source is general arranged my stationary. A stationary arrangement the heat source requires that the preform from which the Glass fiber is pulled, is constantly updated. Here the tracking speed must be in a certain Relation to the drawing speed.
Der Erfindung liegt die Aufgabe zugrunde, eine Ziehvor richtung zum Ziehen von Glasfasern, die als Lichtwel lenleiter dienen, anzugeben, die so schwingungsfrei wie möglich arbeitet. Diese Aufgabe wird erfindungsgemäß durch eine Ziehvorrichtung mit den Merkmalen des An spruchs 1 gelöst.The invention has for its object a Ziehvor direction for pulling glass fibers that act as wire conductors are used to specify which are as vibration free as possible works. This object is achieved according to the invention by a pulling device with the features of the An spell 1 solved.
Die Erfindung wird im folgenden an einem Ausführungs beispiel erläutert.The invention is based on an embodiment example explained.
Die Fig. 1 zeigt eine Ziehvorrichtung zum Ziehen einer Glasfaser nach der Erfindung. Die Vorform (Glasstab oder Glasrohr), aus der eine Glasfaser gezogen wird, ist in der Fig. 1 mit der Bezugsziffer 1 bezeichnet. Die Vorform 1 ist im Ausführungsbeispiel ein Glasstab. Fig. 1 shows a pulling device for pulling an optical fiber according to the invention. The preform (glass rod or glass tube) from which a glass fiber is drawn is designated by the reference number 1 in FIG. 1. In the exemplary embodiment, the preform 1 is a glass rod.
Die gezogene Glasfaser hat die Bezugsziffer 2. Der Glas stab 1 ist bei der Ziehvorrichtung der Fig. 1 in einem Spannfutter 3 gehaltert. Eine Wärmequelle 4 sorgt da für, daß der Glasstab im Ziehbereich geschmolzen wird.The drawn glass fiber has the reference number 2 . The glass rod 1 is held in the chuck of FIG. 1 in a chuck 3 . A heat source 4 ensures that the glass rod is melted in the drawing area.
Das Spannfutter 3 ist mit einem Vorschubschlitten 5 fest verbunden. Die Ziehvorrichtung der Fig. 1 zeigt eine Spindel 6, die an beiden Enden in der Vorschubein heit 7 befestigt und damit stationär angeordnet ist. Die Spindel 6 führt also keine Drehbewegung aus. Die vertikale Vorschubbewegung wird vielmehr ausschließlich durch eine Spindelmutter 8 bewirkt, die die Spindel 6 umgibt, im Vorschubschlitten 5 drehbar gelagert ist und über einen Schneckenantrieb 9 angetrieben wird. Die vertikale Vorschubbewegung, die zum Nachführen des Zieh stabes 1 dient, wird bei der Ziehvorrichtung nach der Erfindung also nicht durch Drehen der Spindel 6 erzielt, sondern durch Drehen der Spindelmutter 8.The chuck 3 is firmly connected to a feed slide 5 . The drawing device of FIG. 1 illustrates a spindle 6, which integrated at both ends in the fixed Vorschubein 7 and is thus stationary. The spindle 6 therefore does not perform any rotary movement. Rather, the vertical feed movement is effected exclusively by a spindle nut 8 which surrounds the spindle 6 , is rotatably mounted in the feed slide 5 and is driven by a worm drive 9 . The vertical feed movement, which is used to track the drawing rod 1 , is therefore not achieved in the drawing device according to the invention by rotating the spindle 6 , but by rotating the spindle nut 8th
Die Fig. 2 zeigt eine Draufsicht der Vorschubeinrich tung mit der sich um die Spindel 6 drehenden Spindel mutter 8 und dem Vorschubantrieb. Fig. 2 shows a plan view of the feed device with the spindle nut 8 rotating around the spindle 6 and the feed drive.
Der Erfindung liegt die Erkenntnis zugrunde, daß Er schütterungen beim Ziehen der Glasfaser nur dadurch optimal vermieden werden können, wenn erfindungsgemäß die Spindelmutter um die feststehende Spindel gedreht wird, und nicht umgekehrt die Spindel innerhalb der feststehenden Mutter gedreht wird. Erschütterungen müs sen deshalb vermieden werden, weil sie sich negativ auf die Fasergeometrie auswirken. Würde man dagegen beim Ziehen umgekehrt die Spindel antreiben und damit dre hen, so wären Erschütterungen, vor allem deshalb nicht zu vermeiden, weil Spindeln einen nicht zu vermeidenden Radialschlag aufweisen.The invention is based on the knowledge that He this only shocks when pulling the fiber can be optimally avoided if according to the invention the spindle nut is turned around the fixed spindle and not vice versa the spindle inside the fixed nut is rotated. Shocks must They should be avoided because they have a negative impact affect the fiber geometry. Would you be against Reverse drive the spindle and thus dre then vibrations would be, especially not because of that to avoid because spindles are an unavoidable one Have radial runout.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893924287 DE3924287A1 (en) | 1989-07-22 | 1989-07-22 | Optical fibre drawing appts. - with min. vibration of preform feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893924287 DE3924287A1 (en) | 1989-07-22 | 1989-07-22 | Optical fibre drawing appts. - with min. vibration of preform feed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3924287A1 true DE3924287A1 (en) | 1991-02-07 |
Family
ID=6385609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19893924287 Withdrawn DE3924287A1 (en) | 1989-07-22 | 1989-07-22 | Optical fibre drawing appts. - with min. vibration of preform feed device |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3924287A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3035070A1 (en) * | 1980-09-17 | 1982-04-22 | Siemens AG, 1000 Berlin und 8000 München | Glass fibre light-wave conductor varying in dia. - produced by changing drawing off velocity and molten glass temp. on drawing |
| GB2146321A (en) * | 1983-09-03 | 1985-04-17 | Stc Plc | Optical fibre pulling tower |
| US4521351A (en) * | 1983-01-27 | 1985-06-04 | Nippon Sheet Glass Co., Ltd. | Process for producing light-transmitting element of synthetic resin |
| US4741748A (en) * | 1986-01-30 | 1988-05-03 | Corning Glass Works | Heating oven for preparing optical waveguide fibers |
-
1989
- 1989-07-22 DE DE19893924287 patent/DE3924287A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3035070A1 (en) * | 1980-09-17 | 1982-04-22 | Siemens AG, 1000 Berlin und 8000 München | Glass fibre light-wave conductor varying in dia. - produced by changing drawing off velocity and molten glass temp. on drawing |
| US4521351A (en) * | 1983-01-27 | 1985-06-04 | Nippon Sheet Glass Co., Ltd. | Process for producing light-transmitting element of synthetic resin |
| GB2146321A (en) * | 1983-09-03 | 1985-04-17 | Stc Plc | Optical fibre pulling tower |
| US4741748A (en) * | 1986-01-30 | 1988-05-03 | Corning Glass Works | Heating oven for preparing optical waveguide fibers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: KABEL RHEYDT AG, 4050 MOENCHENGLADBACH, DE |
|
| 8139 | Disposal/non-payment of the annual fee |