EP0023747A1 - Method and apparatus for the manufacture of tiles - Google Patents
Method and apparatus for the manufacture of tiles Download PDFInfo
- Publication number
- EP0023747A1 EP0023747A1 EP80200734A EP80200734A EP0023747A1 EP 0023747 A1 EP0023747 A1 EP 0023747A1 EP 80200734 A EP80200734 A EP 80200734A EP 80200734 A EP80200734 A EP 80200734A EP 0023747 A1 EP0023747 A1 EP 0023747A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- knife
- knives
- moldings
- tiles
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims 2
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 claims 1
- 238000005520 cutting process Methods 0.000 description 18
- 238000003825 pressing Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
- B28B11/16—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for extrusion or for materials supplied in long webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0036—Cutting means, e.g. water jets
Definitions
- the invention relates to a method for producing tiles by extrusion of a ceramic mass into a continuous strand, which is divided into the desired format length into moldings which are then dried, possibly glazed and fired, and extends to a knife and a device to carry out the procedure.
- the method relates in particular to the production of the moldings for split tiles, which are split in a simple manner, as a result of which each molded product gives two tiles.
- the strand is provided with a row extending over the strand width and coaxial over the strand length, which are separated from each other by ceramic material only to the extent that after firing the moldings, splitting over the longitudinal center of the moldings under the action lower forces can take place.
- the cutting of a continuous strand of the ceramic material to the desired format length of the tiles can be accomplished with the help of cutting wires which are periodically moved against one another on both sides of the strand perpendicular to the transport direction.
- a disadvantage of cutting with a cutting wire is that it can tear easily, which means a loss of production.
- Another known method uses cutting knives which are only used when the strand is not in motion. It is obvious that this device is relatively complicated. This method also has the disadvantage that waste is generated.
- the cutting methods described above have another disadvantage.
- different pushing forces arise in the extruded strand over its cross section. These appear after the moldings have been cut off and dried. It can then be seen that from the center to the ends of the front side of the moldings in the transport direction, the moldings have a so-called advance.
- the deviation from the straightness that occurs on the visible sides of the tiles after the moldings have been cut off is to be interpreted under advance. The size of this deviation depends on the properties of the key used.
- the roughly matching negative advance shows the rear side of the moldings in the direction of transport of the strand. This undesirable and disadvantageous advance can also be seen after the molded articles have been fired. This gives moldings on which two sides are not straight. With the above Known cutting methods mentioned can not be equalized these advancements.
- the invention has for its object to arrive at a method with which tiles can be produced by extrusion of a ceramic mass into a continuous strand, which is cut to the desired format length into moldings, which show tiles after drying, glazing and firing, which do not have the disadvantages mentioned above.
- the moldings are cut to length by at least one knife according to the inventive method, the longitudinal surface of which runs in an arc directed against the direction of transport of the strand, so that the cut surface of the end of the molding pointing to the respective strand end runs in a convex arc over the width of the molding.
- This bending of the knives in the middle of their longitudinal surface is 0.1% to 0.7% of the width of the strand to be cut.
- the deflection of the knives is preferably selected to be 0.3% to 0.5% of the width of the strand to be cut.
- the continuously advanced strand of the ceramic mass is periodically aligned on both sides of the strand perpendicular to the direction of transport of the strand cutters moving against each other cut to format length.
- the cutting knives move synchronously with the strand transport.
- the knives on both sides of their longitudinal surface are provided with recessing elements which have the same bend as the knives.
- the knives and the pressing elements are preferably made of a wear-resistant material that does not adhere to the ceramic mass
- the knife blade thickness is linked to specific conditions. On the one hand, the knife will be chosen as thin as possible so as not to squeeze the channels between the tile halves during the cutting. This also leads to the so-called collapse of the strand during the transport of the cut strand. On the other hand, it is preferred to choose a thicker blade in order to achieve a higher mechanical and better wear resistance and thus a longer service life.
- the knife blade thickness can be selected between 0.3 mm and 1.2 mm, preferably between 0.5 mm and 1.0 mm.
- the invention also relates to a device for carrying out the method according to the invention.
- the device consists of a carriage, which is provided with means for periodically, synchronized tracking of the carriage with the strand and further means has to move the cutting knives on one or both sides of the strand perpendicular to the direction of transport of the strand and to carry out this movement at times, so that the same format lengths are always cut from the strand.
- an extrusion press 1 presses a continuous strand 2 of ceramic mass, which is provided over its cross section with a series of channels 3 which extend coaxially over the length of the strand and are separated from one another by ceramic mass 4.
- the strand 2 is provided with pressed-in side edges 5 of slight depth during the pressing, which form abutting edges after the tiles have been fired.
- Knives 6 are arranged on the side of the strand 2 and are clamped in holders 7. The knives 6 periodically move against one another, as a result of which moldings 8 are cut off. The knives 6 are slightly offset from one another in the direction of transport of the strand, so that the sharp knife edges when the shape is cut off do not touch from the strand.
- recessing members 9 are arranged on both sides of the knives 6, which at the same time press the edges of the moldings somewhat during the cutting movement in addition to cutting through the strand 2, so that after the firing of the Moldings the front and back of the tiles are also provided with butt edges.
- the knives 6 and the press-in members 9 are clamped in a holder which consists of parts 12 and 13, the sides of which bear against the knife 6 and the push-in members 9 and are bent such that the desired deflection when the knife 6 and the push-in members 9 are clamped in of the knife 6 and the pressing elements 9 is obtained.
- the deflection of the knives 6 is 0.1% to 0.7% of the width of the strand 2. In the advance that occurs in practice, the deflection of the knives 6 is preferably chosen to be 0.3% to 0.5% of the width of the strand 2.
- the knives 6 as well as the push-in members 9 are made of wear-resistant material which is not adhesive to ceramic mass.
- Spring steel can be used for the knives 6, e.g. is hard chrome plated.
- the press-in members 9 can be made of brass, the z. B. is also chrome-plated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Fliesen durch Strangpressen einer keramischen Masse zu einem kontinuierlichen Strang, welcher auf die gewünschte Formatlänge in Formlinge unterteilt wird, die anschließend getrocknet, evtl. glasiert und gebrannt werden und erstreckt sich auf ein Messer und eine Vorrichtung zur Durchführung des Verfahrens. Das Verfahren bezieht sich insbesondere auf die Herstellung der Formlinge für Spaltfliesen, welche auf einfache Weise gespalten werden, wodurch jeder Formling zwei Fliesen ergibt.The invention relates to a method for producing tiles by extrusion of a ceramic mass into a continuous strand, which is divided into the desired format length into moldings which are then dried, possibly glazed and fired, and extends to a knife and a device to carry out the procedure. The method relates in particular to the production of the moldings for split tiles, which are split in a simple manner, as a result of which each molded product gives two tiles.
Bei der Herstellung von Spaltfliesen durch Extrudieren wird der Strang mit einer über die Strangbreite reichenden Reihe koaxial über die Stranglänge verlaufender Kanäle versehen, welche durch keramische Masse nur insoweit voneinander getrennt sind, daß nach dem Brennen der Formlinge das Spalten über die Längsmitte der Formlinge unter Einwirkung geringer Kräfte stattfinden kann.In the production of split tiles by extrusion, the strand is provided with a row extending over the strand width and coaxial over the strand length, which are separated from each other by ceramic material only to the extent that after firing the moldings, splitting over the longitudinal center of the moldings under the action lower forces can take place.
Das Abschneiden eines kontinuierlichen Strangs des keramischen Materials auf die gewünschte Formatlänge der Fliesen kann mit Hilfe an beiden Seiten des Strangs senkrecht zur Transportrichtung periodisch gegeneinander bewegter Schneiddrähte bewerkstelligt werden. Ein Nachteil des Trennens mit einem Schneiddraht besteht darin, daß dieser leicht reißen kann, was einen Produktionsausfall bedeutet.The cutting of a continuous strand of the ceramic material to the desired format length of the tiles can be accomplished with the help of cutting wires which are periodically moved against one another on both sides of the strand perpendicular to the transport direction. A disadvantage of cutting with a cutting wire is that it can tear easily, which means a loss of production.
Bei einem anderen bekannten Verfahren werden Schneidmesser benutzt, welche nur zum Einsatz kommen, wenn der Strang nicht in Bewegung ist. Es ist einleuchtend, daß diese Vorrichtung dadurch relativ kompliziert ist. Außerdem hat diese Methode den Nachteil, daß Abfälle entstehen.Another known method uses cutting knives which are only used when the strand is not in motion. It is obvious that this device is relatively complicated. This method also has the disadvantage that waste is generated.
Bei den genannten Verfahren ist es beim Unterteilen des Strangs auf Formatlänge möglich, die Formlinge an beiden Seiten mit sog. Stoßröndern zu versehen. Beim Trennen mit einem Schneiddraht können die Stoßränder mit sog. Vorschnittrollen erzeugt werden, welche an den Stellen, wo der Strang geteilt wird, den Strang an beiden Seiten bis auf geringe Tiefe einschneiden und gleichzeitig eindrücken. Beim Verwenden von Schneidmessern besitzen diese an beiden Seiten der Längsfläche der Messer je ein zurückliegendes Eindrückorgan, welches eine Dicke aufweist, die mit der Breite des gewünschten Stoßrands übereinstimmt. Insbesondere durch die Verwendung eines solchen Messers entsteht immer Abfall an beiden Seifen des stillstehenden Strangs.With the above-mentioned methods, when dividing the strand into format lengths, it is possible to provide the molded articles on both sides with so-called abutments. When cutting with a cutting wire, the butt edges can be created with so-called pre-cutting rollers, which cut the strand on both sides to a small depth at the points where the strand is divided and press it in at the same time. When using cutting knives, these have on each side of the longitudinal surface of the knives a back pushing-in member which has a thickness which corresponds to the width of the desired abutting edge. In particular, the use of such a knife always creates waste on both soaps of the stationary strand.
Außer den genannten Nachteilen haben die oben beschriebenen Abschneidverfahren noch einen weiteren Nachteil. Beim Strangpressen einer keramischen Masse durch einen Extrudermund entstehen in dem extrudierten Strang über dessen Querschnitt unterschiedliche Schiebekräfte. Diese treten nach dem Abschneiden und Trocknen der Formlinge in Erscheinung. Man erkennt dann, daß von der Mitte aus zu den Enden der vorderen Seite der Formlinge in Transportrichtung gesehen die Formlinge eine sog. Vortreibung besitzen. Unter Vortreibung ist die an den Sichtseiten der Fliesen nach dem Abschneiden der Formlinge entstehende Abweichung von der Gradlinigkeit zu werstehen. Die Größe dieser Abweichung ist abhängig von den Eigenschaften der benutzten Tonart. Eine ungefähr übereinstimmende negative Vortreibung zeigt die in Transportrichtung des Strangs hintere Seite der Formlinge. Diese unerwünschte und nachteilige Vortreibung ist auch nach dem Brennen der Formlinge erkennbar. Man erhält somit Formlinge, an denen zwei Seiten nicht gradlinig sind. Mit den oben genannten bekannten Schneidverfahren lassen sich diese Vortreibungen nicht egalisieren.In addition to the disadvantages mentioned, the cutting methods described above have another disadvantage. When extruding a ceramic mass through an extruder mouth, different pushing forces arise in the extruded strand over its cross section. These appear after the moldings have been cut off and dried. It can then be seen that from the center to the ends of the front side of the moldings in the transport direction, the moldings have a so-called advance. The deviation from the straightness that occurs on the visible sides of the tiles after the moldings have been cut off is to be interpreted under advance. The size of this deviation depends on the properties of the key used. The roughly matching negative advance shows the rear side of the moldings in the direction of transport of the strand. This undesirable and disadvantageous advance can also be seen after the molded articles have been fired. This gives moldings on which two sides are not straight. With the above Known cutting methods mentioned can not be equalized these advancements.
Der Erfindung liegt die Aufgabe zugrunde, zu einem Verfahren zu gelangen, mit dem sich Fliesen durch Strangpressen einer keramischen Masse zu einem kontinuierlichen Strang, welcher auf gewünschte Formatlänge zu Formlingen abgeschnitten wird, herstellen lassen, die nach dem Trocknen, Glasieren und Brennen Fliesen zeigen, welche die oben genannten Nachteile nicht aufweisen.The invention has for its object to arrive at a method with which tiles can be produced by extrusion of a ceramic mass into a continuous strand, which is cut to the desired format length into moldings, which show tiles after drying, glazing and firing, which do not have the disadvantages mentioned above.
Um die durch die Schiebekräfte in der plastischen keramischen Masse auftretende Vortreibung in Transportrichtung des Strangs aufzuheben, werden nach dem erfindungsgemäßen Verfahren die Formlinge auf Formatlänge durch mindestens ein Messer geschnitten, dessen Längsfläche in einem gegen die Transportrichtung des Strangs gerichteten Bogen verläuft, so daß die Schnittfläche des zum jeweiligen Strangende hinweisenden Formlingsendes im konvexen Bogen über die Formlingsbreite verläuft.In order to remove the advance in the direction of transport of the strand caused by the pushing forces in the plastic ceramic mass, the moldings are cut to length by at least one knife according to the inventive method, the longitudinal surface of which runs in an arc directed against the direction of transport of the strand, so that the cut surface of the end of the molding pointing to the respective strand end runs in a convex arc over the width of the molding.
Diese Biegung der Messer beträgt in der Mitte ihrer Längsfläche 0,1 % bis 0,7 % der Breite des abzuschneidenden Strangs. Bei der in der Praxis Üblicherweise auftretenden Vortreibung wird die Durchbiegung der Messer vorzugsweise auf 0,3 % bis 0,5 % der Breite des abzuschneidenden Strangs gewählt.This bending of the knives in the middle of their longitudinal surface is 0.1% to 0.7% of the width of the strand to be cut. In the case of the advance that usually occurs in practice, the deflection of the knives is preferably selected to be 0.3% to 0.5% of the width of the strand to be cut.
Nach der Erfindung wird der kontinuierlich vorbewegte Strang der keramischen Masse durch an beiden Seiten des Strangs senkrecht auf die Transportrichtung des Strangs ausgerichtete,periodisch sich gegeneinander bewegende Messer auf Formatlänge abgeschnitten.According to the invention, the continuously advanced strand of the ceramic mass is periodically aligned on both sides of the strand perpendicular to the direction of transport of the strand cutters moving against each other cut to format length.
Um Formlinge von genau konstanter Formatlänge zu erhalten, bewegen sich die Schneidmesser synchron mit dem Strangtransport.In order to obtain blanks of exactly constant format length, the cutting knives move synchronously with the strand transport.
Um auch die Seitenränder an der Oberseite der Fliesen im Bereich des Trennschnitts mit Stoßrändern zu versehen, sind die Messer an beiden Seiten ihrer Längsfläche mit zurückliegenden Eindrückorganen versehen, welche dieselbe Biegung haben wie die Messer. Die Messer sowie die EindrUckorgane sind vorzugsweise aus einem nicht an der keramischen Masse klebenden, verschleißfesten Material gefertigtIn order to provide the side edges on the top of the tiles with abutting edges in the area of the separating cut, the knives on both sides of their longitudinal surface are provided with recessing elements which have the same bend as the knives. The knives and the pressing elements are preferably made of a wear-resistant material that does not adhere to the ceramic mass
Die Messerblattstärke ist an spezifische Bedingungen geknüpft. Einerseits wird man das Messer so dünn wie möglich wählen, um während des Schneidens die Kanäle zwischen den Fliesenhälften nicht zuzuquetschen. Dieses führt auch während des Transports des angeschnittenen Strangs zum sog. Zusammenklappen des Strangs. Andererseits wird bevorzugt, das Messerblatt dicker zu wählen, um eine höhere mechanische und bessere Verschleissfestigkeit und somit längere Lebensdauer zu erreichen. Die Messerblattstärke kann man zwischen 0,3 mm bis 1,2 mm, vorzugsweise zwischen 0,5 mm und 1,0 mm wählen.The knife blade thickness is linked to specific conditions. On the one hand, the knife will be chosen as thin as possible so as not to squeeze the channels between the tile halves during the cutting. This also leads to the so-called collapse of the strand during the transport of the cut strand. On the other hand, it is preferred to choose a thicker blade in order to achieve a higher mechanical and better wear resistance and thus a longer service life. The knife blade thickness can be selected between 0.3 mm and 1.2 mm, preferably between 0.5 mm and 1.0 mm.
Es versteht sich, daß man die gebogenen Messer an sich auch beim Abschneiden von stillstehenden Strängen benutzen kann.It goes without saying that the curved knives per se can also be used when cutting off still strands.
Die Erfindung bezieht sich auch auf eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens. Die Vorrichtung besteht aus einem Wagen, der mit Mitteln zum periodischen, synchronisierten Mitlaufen des Wagens mit dem Strang versehen ist und ferner Mittel besitzt, um die Schneidmesser an einer oder an beiden Seiten des Strangs senkrecht zur Transportrichtung des Strangs zu bewegen und diese Bewegung zu Zeitpunkten durchzuführen, so daß immer gleiche Formatlängen vom Strang abgeschnitten werden.The invention also relates to a device for carrying out the method according to the invention. The device consists of a carriage, which is provided with means for periodically, synchronized tracking of the carriage with the strand and further means has to move the cutting knives on one or both sides of the strand perpendicular to the direction of transport of the strand and to carry out this movement at times, so that the same format lengths are always cut from the strand.
Anhand der Zeichnung wird ein Ausführungsbeispiel der Erfindung näher erläutert. Darin zeigen:
- Fig. 1 die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens in einer Perspektive;
- Fig. 2 einen Messerhalter mit einem Schneidmesser und zurückliegenden Eindrückorganen im Grundriß;
- Fig. 3 eine Seitenansicht zu dem Messerhalter gemäß Fig. 2.
- Figure 1 shows the device for performing the method according to the invention in a perspective.
- Figure 2 shows a knife holder with a cutting knife and past pressing organs in plan.
- 3 shows a side view of the knife holder according to FIG. 2.
Wie Fig. 1 zeigt, wird durch eine Strangpresse 1 ein kontinuierlicher Strang 2 aus keramischer Masse gepreßt, welcher über seinem Querschnitt mit einer Reihe Kanäle 3 versehen ist, die sich koaxial über die Stranglänge erstrecken und durch keramische Masse 4 voneinander getrennt sind. Der Strang 2 wird während des Pressens mit eingedrückten Seitenrändern 5 von geringfügiger Tiefe versehen, welche nach dem Brennen der Fliesen Stoßrönder bilden.As shown in FIG. 1, an extrusion press 1 presses a continuous strand 2 of ceramic mass, which is provided over its cross section with a series of channels 3 which extend coaxially over the length of the strand and are separated from one another by ceramic mass 4. The strand 2 is provided with pressed-in side edges 5 of slight depth during the pressing, which form abutting edges after the tiles have been fired.
Seitlich am Strang 2 sind Messer 6 angeordnet, die in Haltern 7 eingeklemmt sind. Die Messer 6 bewegen sich periodisch gegeneinander, wodurch Formlinge 8 abgeschnitten werden. Die Messer 6 sind in Transportrichtung des Strangs gesehen etwas zueinander versetzt, so daß sich die scharfen Messerschneiden beim Abschneiden der Formlinge vom Strang nicht berühren.
Um die Vorder- und Hinterseite der Formlinge auch mit Stoßrändern zu versehen, sind an beiden Seiten der Messer 6 zurückliegende Eindrückorgane 9 angeordnet, welche gleichzeitig bei der Schneidbewegung neben dem Durchschneiden des Strangs 2 die Ränder der Formlinge etwas eindrücken, so daß nach dem Brennen der Formlinge die Vorder- und Hinterseite der Fliesen auch mit Stoßrändern versehen sind.In order to provide the front and rear sides of the moldings with abutting edges, recessing
Wie schon einleitend erwähnt, entstehen während des Pressens im Strang 2 Schiebekräfte, deren Auswirkungen nach dem Abschneiden und Trocknen der Formlinge in Erscheinung treten. Von der Mitte aus zu den Seiten abnehmend zeigt die Schnittfläche 10 der Formlinge in Transportrichtung gesehen eine Vortreibung. Eine nahezu übereinstimmende negative Vortreibung zeigt die hintere Schnittfläche der Formlinge. Um dies zu vermeiden, sind die Messer 6 gebogen, und zwar gegen die Transportrichtung des Strangs 2, wie dies deutlich in Fig. 2 zu erkennen ist. Darin sieht man auch, daß die EindrUckorgane 9 zur Bildung der Stoßränder eine übereinstimmende Durchbiegung mit den Messern 6 aufweisen. Die Messer 6 und die Eindrückorgane 9 sind in einem Halter eingeklemmt, der aus Teilen 12 und 13 besteht, deren Seiten gegen das Messer 6 und die EindrUckorgane 9 anliegen und derart gebogen sind, daß beim Einklemmen des Messers 6 und der Eindrückorgane 9 die gewünschte Durchbiegung des Messers 6 und der EindrUckorgane 9 erhalten wird.As already mentioned in the introduction, 2 pushing forces arise in the strand during pressing, the effects of which appear after the moldings have been cut off and dried. Decreasing from the center to the sides, the
Die Durchbiegung der Messer 6 beträgt 0,1 % bis 0,7 % der Breite des Strangs 2. Bei der in der Praxis auftretenden Vortreibung wird die Durchbiegung der Messer 6 vorzugsweise auf 0,3 % bis 0,5 % der Breite des Strangs 2 gewählt.The deflection of the
Die Messer 6 wie auch die Eindrückorgane 9 sind aus an keramischer Masse nicht klebendem verschleißfestem Material hergestellt. Für die Messer 6 kann Federstahl verwendet werden, der z.B. hartverchromt ist. Die Eindrückorgane 9 können aus Messing hergestellt sein, das z. B. gleichfalls hartverchromt ist.The
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2931728 | 1979-08-04 | ||
| DE19792931728 DE2931728A1 (en) | 1979-08-04 | 1979-08-04 | METHOD, KNIFE AND DEVICE FOR PRODUCING TILES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0023747A1 true EP0023747A1 (en) | 1981-02-11 |
| EP0023747B1 EP0023747B1 (en) | 1983-06-29 |
Family
ID=6077664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80200734A Expired EP0023747B1 (en) | 1979-08-04 | 1980-08-01 | Method and apparatus for the manufacture of tiles |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0023747B1 (en) |
| DE (2) | DE2931728A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT400120B (en) * | 1985-06-26 | 1995-10-25 | Braas Gmbh | METHOD AND DEVICE FOR PRODUCING ROOF TILES |
| DE10045544A1 (en) * | 2000-09-07 | 2002-03-28 | Siemens Ag | Process for applying a coating to a lamp and coated lamp |
| US6802921B1 (en) * | 2000-03-29 | 2004-10-12 | Boss Profiles Limited | Process and system for vitrified extruded ceramic tiles and profiles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215646C2 (en) * | 1992-05-13 | 1998-04-09 | Schmitz Tona Tonwerke | Device for cross-cutting a soft plastic mass strand |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1973092A (en) * | 1932-02-12 | 1934-09-11 | Ludowici Celadon Company | Method and apparatus of forming tile |
| DE2258575B1 (en) * | 1972-11-30 | 1974-01-31 | Hans Lingl | Ornamental ceramic plates - stamped out from extruded strip |
| DE2341631B1 (en) * | 1973-08-17 | 1975-01-09 | Hans Lingl | Device for the production of ceramic plates with ornamental shapes |
-
1979
- 1979-08-04 DE DE19792931728 patent/DE2931728A1/en not_active Withdrawn
-
1980
- 1980-08-01 EP EP80200734A patent/EP0023747B1/en not_active Expired
- 1980-08-01 DE DE8080200734T patent/DE3063975D1/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1973092A (en) * | 1932-02-12 | 1934-09-11 | Ludowici Celadon Company | Method and apparatus of forming tile |
| DE2258575B1 (en) * | 1972-11-30 | 1974-01-31 | Hans Lingl | Ornamental ceramic plates - stamped out from extruded strip |
| DE2341631B1 (en) * | 1973-08-17 | 1975-01-09 | Hans Lingl | Device for the production of ceramic plates with ornamental shapes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT400120B (en) * | 1985-06-26 | 1995-10-25 | Braas Gmbh | METHOD AND DEVICE FOR PRODUCING ROOF TILES |
| US6802921B1 (en) * | 2000-03-29 | 2004-10-12 | Boss Profiles Limited | Process and system for vitrified extruded ceramic tiles and profiles |
| DE10045544A1 (en) * | 2000-09-07 | 2002-03-28 | Siemens Ag | Process for applying a coating to a lamp and coated lamp |
| DE10045544C2 (en) * | 2000-09-07 | 2002-09-12 | Siemens Ag | Process for applying a coating to a lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3063975D1 (en) | 1983-08-04 |
| DE2931728A1 (en) | 1981-02-19 |
| EP0023747B1 (en) | 1983-06-29 |
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