DE19921290B4 - Device for manufacturing glass tubes - Google Patents
Device for manufacturing glass tubes Download PDFInfo
- Publication number
- DE19921290B4 DE19921290B4 DE1999121290 DE19921290A DE19921290B4 DE 19921290 B4 DE19921290 B4 DE 19921290B4 DE 1999121290 DE1999121290 DE 1999121290 DE 19921290 A DE19921290 A DE 19921290A DE 19921290 B4 DE19921290 B4 DE 19921290B4
- Authority
- DE
- Germany
- Prior art keywords
- feeder head
- downpipe
- glass
- channel
- inner sleeve
- 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
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Vorrichtung zum Herstellen von Glasröhren;
1.1 mit einem Speiserkopf (1), der einen Zulauf (1.1) für flüssige Glasmasse aufweist;
1.2 an dem Speiserkopf (1) ist ein Fallrohr (2) angeschlossen;
1.3 Speiserkopf (1) und Fallrohr (2) bilden miteinander eine durchgehende, im Betrieb glasberührte Bohrung, die an den Zulauf (1.1) des Speiserkopfes (1) angeschlossen ist;
1.4 in die Bohrung ist eine Innenhülse (5) eingesetzt;
1.5 die Innenhülse (5) bildet zusammen mit der Bohrung einen Ringkanal für die Glasmasse und umschließt zugleich einen Innenkanal;
1.6 der Innenkanal weist einen Druckluftanschluß auf;
1.7 das Fallrohr (2) ist unmittelbar an den Speiserkopf (1) angeschlossen;
1.8 das Fallrohr (2) hat eine Länge von zwischen 0,5 und 3 m;
1.9 der Ringkanal hat eine lichte Weite von zwischen 10 und 200 mm.Device for manufacturing glass tubes;
1.1 with a feeder head (1) which has an inlet (1.1) for liquid glass mass;
1.2 a down pipe (2) is connected to the feeder head (1);
1.3 feeder head (1) and downpipe (2) form a continuous bore that is in contact with glass during operation and is connected to the inlet (1.1) of the feeder head (1);
1.4 an inner sleeve (5) is inserted into the bore;
1.5 the inner sleeve (5) forms together with the bore an annular channel for the glass mass and at the same time encloses an inner channel;
1.6 the inner channel has a compressed air connection;
1.7 the downpipe (2) is connected directly to the feeder head (1);
1.8 the downpipe (2) has a length of between 0.5 and 3 m;
1.9 the ring channel has a clear width of between 10 and 200 mm.
Description
Die Erfindung betrifft eine Vorrichtung zum Herstellen von Glasröhren.The invention relates to a device for the production of glass tubes.
Zur Herstellung von Glasröhren gibt es verschiedene Möglichkeiten und dem gemäß mehrere Verfahren. Bei dem sogenannten Danner-Verfahren wird von den Außenflächen einer rotierenden Pfeife Glas in waagrechter Richtung abgezogen. Die Glasschmelze wird auf einer geneigten Rohrziehvorrichtung auf eine rotierende Pfeife aufgegeben. Es ist eine durchbohrte Welle vorgesehen, die die Pfeife trägt und durch die Druckluft ins Innere des sich bildenden Glasschlauches eingeblasen wird.For the production of glass tubes there there are different ways and accordingly several methods. In the so-called Danner process, one of the outer surfaces rotating whistle glass pulled off in a horizontal direction. The glass melt is rotating on an inclined pipe pulling device Gave up whistle. A pierced shaft is provided which carries the pipe and through the compressed air into the interior of the glass tube that forms is blown in.
Bei dem sogenannten Vello-Verfahren wird das Glasrohr über eine Düse aus einer Glasschmelze heraus vertikal nach unten abgezogen.In the so-called Vello process the glass tube is over a nozzle withdrawn vertically downwards from a glass melt.
Weiterhin sind bekannt geworden
Hierin sind Vorrichtungen beschrieben, bei welchen Glasröhren durch Speisen eines Ringkanals aus einer offenen Rinne erzeugt werden, somit aus einem Schmelzbad mit freier Oberfläche. Freie Oberflächen sind nachteilig, weil die Glasmasse hierbei Luft an der freien Oberfläche aufnehmen kann, was die Qualität des fertigen Produktes beeinträchtigt.Devices are described here with which glass tubes are generated by feeding an annular channel from an open channel, thus from a melt pool with a free surface. Free surfaces are disadvantageous because the glass mass absorb air on the free surface can what the quality of the finished product.
Aus „Schott Glaslexikon, 5. Auflage 1957, Kapitel 5.2" ist ein geschlossener Körper bekannt, über welchen Glas einem Auslauf zum Rohrziehen zugeführt wird. Der geschlossene Körper wird als Rinne bezeichnet. Es handelt sich dabei aber um ein Fallrohr.From “Schott Glaslexikon, 5th edition 1957, Chapter 5.2 " a closed body known about which glass is fed to an outlet for tube drawing. The closed one body is called a gutter. But it is a downpipe.
Die bekannten Verfahren und Vorrichtungen haben Nachteile. Beim sogenannten Danner-Verfahren und beim Vello-Verfahren liegt eine sogenannte freie Verformung vor. Hierdurch sind Grenzen bezüglich der Homogenität des Glases über den Umfang hinweg gegeben. Durch geometrische Parameter wie beispielsweise Wanddickenunterschiede und Außendurchmesserstreuung sind verfahrenstechnisch Grenzen gegeben.The known methods and devices have Disadvantage. With the so-called Danner process and the Vello process there is a so-called free deformation. There are limits to this in terms of of homogeneity of the glass over given the scope. Through geometric parameters such as Differences in wall thickness and outside diameter scatter there are limits in terms of process technology.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung anzugeben, mit dem sich Glasröhren erzeugen lassen, die sich durch besonders hohe Formtreue auszeichnen, ferner durch ein hohes Maß an Homogenität, einfachem Aufbau und günstigen Herstellungskosten.The invention has for its object a Specify device with which glass tubes can be produced, which are characterized by a particularly high level of form fidelity and a high level Degree of Homogeneity, simple construction and low manufacturing costs.
Diese Aufgabe wird durch die Kennzeichen der selbständigen Ansprüche gelöst.This task is characterized by the characteristics of the independent Expectations solved.
Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist eine Vorrichtung in einem Vertikalschnitt dargestellt, gelegt durch die Längsmittelachse der Vorrichtung.The invention is based on the drawing explained in more detail. In this a device is shown in a vertical section through the longitudinal central axis the device.
Man erkennt im einzelnen einen Speiserkopf
Speiserkopf
Wie man sieht, hat die genannte Bohrung
zunächst
im Bereich des Speiserkopfes einen relativ großen Durchmesser
In die Bohrung ist eine Innenhülse
Dem Fallrohr
Als unterer Abschluß der gesamten
Vorrichtung dient eine Muffel
Zum Zwecke des Betriebs der Vorrichtung wird
in den Zulauf
Das Fallrohr weist eine Länge auf die sich zwischen 0,5 und 3 m bewegt.The downpipe has a length which ranges between 0.5 and 3 m.
Die lichte Weite des Ringkanals,
das heißt der äußere Durchmesser,
liegt je nach Durchsatz an Glasmasse im Bereich des Fallrohres
Am oberen Ende der Innenhülse
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999121290 DE19921290B4 (en) | 1999-05-07 | 1999-05-07 | Device for manufacturing glass tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999121290 DE19921290B4 (en) | 1999-05-07 | 1999-05-07 | Device for manufacturing glass tubes |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19921290A1 DE19921290A1 (en) | 2000-11-16 |
DE19921290B4 true DE19921290B4 (en) | 2004-05-06 |
Family
ID=7907444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999121290 Expired - Fee Related DE19921290B4 (en) | 1999-05-07 | 1999-05-07 | Device for manufacturing glass tubes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19921290B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11014844B2 (en) | 2015-08-06 | 2021-05-25 | Nippon Electric Glass Co., Ltd. | Sleeve for glass tube molding, and method for assembling sleeve for glass tube molding |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005031657B4 (en) * | 2005-07-05 | 2011-02-03 | Schott Ag | Process for the production of al-silicate glass tubes for use as semi-finished products for the production of glass-ceramic tubes |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1653848A (en) * | 1925-03-21 | 1927-12-27 | Hartford Empire Co | Method and apparatus for making glass tubing |
US1750971A (en) * | 1926-10-16 | 1930-03-18 | Owens Illinois Glass Co | Method and apparatus for producing tubular glass |
US2131417A (en) * | 1936-07-29 | 1938-09-27 | Danner Edward | Means for producing multibore glass tubing |
US3063268A (en) * | 1958-12-15 | 1962-11-13 | Kimble Glass Co | Apparatus for producing glass rod and tubing |
DE2335804A1 (en) * | 1973-07-13 | 1975-02-13 | Inst Gasa Akademii Nauk Uk Ssr | Glass tubing continuous vertical melt pulling plant - fitted with coolant air supply tube for bore |
DE3744369C2 (en) * | 1987-12-29 | 1989-11-02 | Schott Glaswerke, 6500 Mainz, De |
-
1999
- 1999-05-07 DE DE1999121290 patent/DE19921290B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1653848A (en) * | 1925-03-21 | 1927-12-27 | Hartford Empire Co | Method and apparatus for making glass tubing |
US1750971A (en) * | 1926-10-16 | 1930-03-18 | Owens Illinois Glass Co | Method and apparatus for producing tubular glass |
US2131417A (en) * | 1936-07-29 | 1938-09-27 | Danner Edward | Means for producing multibore glass tubing |
US3063268A (en) * | 1958-12-15 | 1962-11-13 | Kimble Glass Co | Apparatus for producing glass rod and tubing |
DE2335804A1 (en) * | 1973-07-13 | 1975-02-13 | Inst Gasa Akademii Nauk Uk Ssr | Glass tubing continuous vertical melt pulling plant - fitted with coolant air supply tube for bore |
DE3744369C2 (en) * | 1987-12-29 | 1989-11-02 | Schott Glaswerke, 6500 Mainz, De |
Non-Patent Citations (1)
Title |
---|
Schott Glaslexikon, 5. Aufl., 1997, Kap. 5.2. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11014844B2 (en) | 2015-08-06 | 2021-05-25 | Nippon Electric Glass Co., Ltd. | Sleeve for glass tube molding, and method for assembling sleeve for glass tube molding |
Also Published As
Publication number | Publication date |
---|---|
DE19921290A1 (en) | 2000-11-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: SCHOTT SPEZIALGLAS GMBH, 55122 MAINZ, DE |
|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: SCHOTT AG, 55122 MAINZ, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |