EP0043019B1 - Press tool for the manufacture of disk-like pressed bodies, particularly plates, dinner plates, cups, dishes or the like from pulverous, preferably ceramic material - Google Patents

Press tool for the manufacture of disk-like pressed bodies, particularly plates, dinner plates, cups, dishes or the like from pulverous, preferably ceramic material Download PDF

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Publication number
EP0043019B1
EP0043019B1 EP81104574A EP81104574A EP0043019B1 EP 0043019 B1 EP0043019 B1 EP 0043019B1 EP 81104574 A EP81104574 A EP 81104574A EP 81104574 A EP81104574 A EP 81104574A EP 0043019 B1 EP0043019 B1 EP 0043019B1
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EP
European Patent Office
Prior art keywords
stamp
counter
ring
die
end faces
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Expired
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EP81104574A
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German (de)
French (fr)
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EP0043019A1 (en
Inventor
Keramikmaschinen-Bau Dorst
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Individual
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Individual
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Priority to AT81104574T priority Critical patent/ATE6914T1/en
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    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/025—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is transferred into the press chamber by relative movement between a ram and the press chamber

Definitions

  • the invention relates to a pressing tool for the production of bowl-shaped pressing bodies, in particular plates, plates, bowls or the like, made of powdery, preferably ceramic material, consisting of a punch and a counter-punch, the end faces of which face one another when pressing the powdered material filled between them form the top and bottom of the bowl-shaped pressing body, the punch and counter-punch being movable towards one another along a horizontal axis and the filling of the powdery material into one of the end faces of the punch and counter-punch and of an annular one, surrounding the punch and counter-punch, into the filling position slidable die limited space.
  • a press with such a pressing tool is known from DE-A-24 37 852.
  • the press powder is filled on one side from above into the space delimited by the punch and counter-punch and a ring, it being practically inevitable that there is not always a uniform distribution of the press powder in the entire space between the opposing punch surfaces. This is the reason for a significant percentage of faulty compacts.
  • the object of the invention is to design the pressing tool in such a way that possible faulty pressing bodies can be avoided as a result of the filling process, and at the same time reworking can be omitted, because a structure which has rounded edges is immediately obtained as the pressing body.
  • the die has a closed annular chamber on the inside, which is connected to a supply for the powdery material that at least one of the edges of the end faces of the punch or counter-punch in the direction of the edge of the other end face protrudes in an annular shape and that the stamp and counter-stamp can only be moved towards one another to such an extent that a small axial annular gap remains between the edges of their end faces.
  • the end face of at least one of the punches has a covering made of elastic material.
  • a pressure medium cushion can be provided behind the cover, which can be part of an isostatic pressing device in a further embodiment.
  • the cover is expediently pulled over the side of the stamp and fixed by a ring which increases the diameter of the stamp.
  • the side of the ring facing the stamp with an enlarged diameter is designed to be elastic at least in the area of contact with the stamp.
  • the ring which increases the diameter of the stamp can be beveled towards the end face of the stamp.
  • the pressing tool shown in the figures is used to manufacture plates from powdered ceramic mass.
  • the pressing tool contains a stamp 10, a counter-stamp 11 and a die 12 surrounding the stamp 10, which can be moved on this stamp.
  • the punch 10 has a smaller diameter than the counter-punch 11.
  • the die 12 consists of an annular body with a cylindrical guide opening with a diameter that is slightly larger than the diameter of the punch 10.
  • An annular groove 13 with a rectangular cross section is incorporated into the inner surface of the die 12. This channel 13 can be connected via a radial feed opening 14 to a storage container (not shown) for the powdered ceramic material to be pressed.
  • the groove 13 is closed on the side facing the counter-punch 11 by a flexible ring 15 made of rubber or a similar elastic material.
  • This ring can deform when the die 12 is displaced in the direction of the counter-punch 11 when it hits the counter-punch, in which it partially lies over the rounded edge of this counter-punch, as can be clearly seen in FIGS. 2 and 3.
  • An annular covering 16 made of rubber or felt sits in a corresponding groove in the die 12 and limits the emergence of ceramic powder and the formation of burrs from the pressed ceramic compacts.
  • the end face of the stamp 10 forms the top of the plate and is covered with a thick elastic rubber plate 19, which has a self-cleaning effect and protrudes in a ring near the edge, as can be seen at 20. This results in a rounded edge on the compacts, which requires little or no reworking.
  • the end face of the counter-punch 11 is shaped corresponding to the underside of the plate in the illustrated embodiment and has a strong bevel towards the cylindrical surface. It is also covered with an elastic rubber plate 22.
  • the circular edge of the plate is bent at an acute angle and has an everted edge, which is held between a frustoconical block 23 and a ring 24, which are connected to a counter block 25 by screws.
  • the block 23 is provided in its central part with a plurality of lines which establish the connection between the end face of the block 23 and a chamber 26 into which pressure medium is introduced.
  • the plate 22 detaches from the block 23 and presses against the pre-compressed ceramic powder mass, as a result of which the pressing process is ended hydrostatically.
  • Fig. 5 shows the separation of stamp and counter stamp and thus the release of the finished compact.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Table Devices Or Equipment (AREA)

Abstract

1. A pressing tool for producing shell- or plate-like pressings, as for example crockery plates, beakers, cups, bowls and the like, from powder material, more specially of a ceramic nature, made up of a stamp (10) and a counter-stamp (11), whose facing end faces are responsible for forming the top and lower sides of the shell-like pressings on pressing the powder material placed therebetween, the stamp (10) and the counter stamp (11) being able to be moved along a level axis towards each other, the powder material being run into a space walled in by the end faces of the stamp and counter-stamp and by a ring-like die (12) placed round the stamp and the counter-stamp, said die being able to be moved into the filling position, characterized in that the die (12) has a shutt-off ring-like space (13) on its inner side, said space being in connection with a supply of the powder material, in that at least one of the edges of the end faces of the stamp (10) and the counter-stamp (11) is designed running out towards the edge of the other end face like a ring (at 20) and in that the stamp (10) and the counter-stamp (11) may be moved so far towards each other that a small axial ring-like gap is kept between the edges of their end faces.

Description

Die Erfindung betrifft ein Preßwerkzeug zur Herstellung von schalenförmigen Preßkörpern, insbesondere Platten, Tellern, Schüsseln od. dgl., aus pulverförmigem, vorzugsweise keramischem Material, bestehend aus einem Stempel und einem Gegenstempel, deren aufeinander zu weisende Stirnflächen beim Pressen des zwischen sie eingefüllten pulverförmigen Materials die Ober- und Unterseite des schalenförmigen Preßkörpers ausbilden, wobei Stempel und Gegenstempel längs einer horizontalen Achse aufeinander zu bewegbar sind und das Einfüllen des pulverförmigen Materials in einen von den Stirnflächen von Stempel und Gegenstempel und von einer ringförmigen, Stempel und Gegenstempel umgebenden, in die Füllstellung verschiebbaren Matrize begrenzten Raum erfolgt.The invention relates to a pressing tool for the production of bowl-shaped pressing bodies, in particular plates, plates, bowls or the like, made of powdery, preferably ceramic material, consisting of a punch and a counter-punch, the end faces of which face one another when pressing the powdered material filled between them form the top and bottom of the bowl-shaped pressing body, the punch and counter-punch being movable towards one another along a horizontal axis and the filling of the powdery material into one of the end faces of the punch and counter-punch and of an annular one, surrounding the punch and counter-punch, into the filling position slidable die limited space.

Eine Presse mit einem solchen Preßwerkzeug ist aus der DE-A-24 37 852 bekannt.A press with such a pressing tool is known from DE-A-24 37 852.

Bei solchen Pressen wird das Preßpulver einseitig von oben her in den von Stempel und Gegenstempel und einem Ring begrenzten Raum eingefüllt, wobei es praktisch unvermeidbar ist, daß sich nicht immer eine gleichmäßige Verteilung des Preßpulvers in dem ganzen Raum zwischen den gegenüberliegenden Stempelflächen ergibt. Dies ist der Grund für einen erheblichen Prozentsatz von fehlerhaften Preßkörpern.In such presses, the press powder is filled on one side from above into the space delimited by the punch and counter-punch and a ring, it being practically inevitable that there is not always a uniform distribution of the press powder in the entire space between the opposing punch surfaces. This is the reason for a significant percentage of faulty compacts.

Wenn außerdem am Ende des Preßvorganges der Stempel auf einem die den Gegenstempel bildende Unterform umgebenden Klemmring aufsitzt, entsteht am Umfang des Preßkörpers ein scharfer Grat, der vor der weiteren Bearbeitung des Preßlings abgeschliffen oder in anderer Weise abgerundet werden muß. Dies stellt eine kostenaufwendige, langwierige und mit dem Anfall von Ausschuß verbundene Arbeit dar.If, in addition, at the end of the pressing process, the punch sits on a clamping ring surrounding the lower die forming the counter-punch, a sharp burr is formed on the circumference of the pressing body, which must be ground off or rounded off in some other way before further processing of the compact. This is a costly, lengthy, and inconvenient work.

Aufgabe der Erfindung ist es, das Preßwerkzeug so auszubilden, daß infolge des Füllvorganges mögliche fehlerhafte Preßkörper vermieden werden und gleichzeitig auch ein Nacharbeiten entfallen kann, weil als Preßkörper unmittelbar ein Gebilde anfällt, das gerundete Ränder aufweist.The object of the invention is to design the pressing tool in such a way that possible faulty pressing bodies can be avoided as a result of the filling process, and at the same time reworking can be omitted, because a structure which has rounded edges is immediately obtained as the pressing body.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Matrize innenseitig eine in sich geschlossene Ringkammer aufweist, die mit einem Vorrat für das pulverförmige Material in Verbindung steht, daß mindestens einer der Ränder der Stirnflächen vom Stempel bzw. Gegenstempel in Richtung auf den Rand der anderen Stirnfläche ringförmig vorsteht und daß Stempel und Gegenstempel nur so weit aufeinander zu verfahrbar sind, daß ein geringer axialer Ringspalt zwischen den Rändern ihrer Stirnseiten verbleibt.This object is achieved in that the die has a closed annular chamber on the inside, which is connected to a supply for the powdery material that at least one of the edges of the end faces of the punch or counter-punch in the direction of the edge of the other end face protrudes in an annular shape and that the stamp and counter-stamp can only be moved towards one another to such an extent that a small axial annular gap remains between the edges of their end faces.

Es ist zwar aus der DE-A-26 57 993 bereits bekannt, den Stempel so auszubilden, daß der Rand seiner Stirnfläche ringförmig auf den Rand des Gegenstempels vorsteht, um so eine Rundung des Randes des Preßlings zu erzielen. Allerdings handelt es sich bei dieser Presse nicht um eine solche, bei der Preßstempel und Gegen stempel längs einer horizontalen Achse aufeinander zu bewegt werden, sondern um eine Vertikalpresse, bei der der derart gestaltete Stempel bei seiner Bewegung auf den Gegenstempel zu den Rand ausformt.It is already known from DE-A-26 57 993 to design the stamp in such a way that the edge of its end face protrudes in a ring on the edge of the counter-stamp in order to round the edge of the compact. However, this press is not one in which the ram and counter ram are moved towards one another along a horizontal axis, but rather a vertical press in which the ram thus shaped moves to the edge as it moves onto the counter ram.

Beim Erfindungsgegenstand ist es aufgrund der entsprechenden Ausbildung wenigstens einer Stirnfläche des Stempels bzw. Gegenstempels und der Belassung eines axialen Ringspaltes zwischen den Stempeln möglich, Preßteile aus keramischem Material zu erhalten, die praktisch keinen Grat mehr aufweisen, vielmehr einen abgerundeten äußeren Rand besitzen, so daß keine langen und kostspieligen Nacharbeiten erforderlich sind. Außerdem wird erreicht, daß der durch ungleichmäßige Verteilung des Preßpulvers in dem Preßraum hervorgerufene Ausschuß praktisch vollständig vermieden wird. Die gleichmäßige Dichte eines Preßkörpers, der anschließend gebrannt werden soll, ist dabei von wesentlicher Bedeutung.In the subject of the invention, it is possible due to the corresponding design of at least one end face of the stamp or counter-stamp and the leaving of an axial annular gap between the stamps to obtain pressed parts made of ceramic material which practically have no burr, but rather have a rounded outer edge, so that no long and expensive rework is required. In addition, it is achieved that the waste caused by uneven distribution of the press powder in the press chamber is practically completely avoided. The uniform density of a compact that is to be subsequently fired is essential.

In Weiterbildung der Erfindung weist die Stirnseite wenigstens eines der Stempel einen Überzug aus elastischem Material auf. Hinter dem Überzug kann ein Druckmittelpolster vorgesehen sein, das in weiterer Ausbildung Teil einer isostatischen Preßvorrichtung sein kann. Der Überzug wird zweckmäßig über die Seite des Stempels gezogen und durch einen den Durchmesser des Stempels vergrößernden Ring fixiert.In a development of the invention, the end face of at least one of the punches has a covering made of elastic material. A pressure medium cushion can be provided behind the cover, which can be part of an isostatic pressing device in a further embodiment. The cover is expediently pulled over the side of the stamp and fixed by a ring which increases the diameter of the stamp.

Dabei ist es vorteilhaft, wenn die den Stempel mit vergrößertem Durchmesser zugewandte Seite des Ringes wenigstens im Berührungsbereich mit dem Stempel elastisch ausgebildet ist. Der den Durchmesser des Stempels vergrößernde Ring kann zur Stempelstirnfläche hin abgeschrägt sein.It is advantageous if the side of the ring facing the stamp with an enlarged diameter is designed to be elastic at least in the area of contact with the stamp. The ring which increases the diameter of the stamp can be beveled towards the end face of the stamp.

Die Zeichnung zeigt in

  • Fig. 1 einen Längsschnitt durch ein Preßwerkzeug an einer Presse, bei der Stempel und Gegenstempel längs einer horizonten Achse aufeinander zu bewegbar sind;
  • Fig. 2 das Werkzeug nach Fig. 1 beim Füllen;
  • Fig. 3 das Werkzeug im geschlossenen Zustand;
  • Fig. 4 das Werkzeug nach dem Anlegen des hydrostatischen Druckes und in
  • Fig. 5 die Entnahme des fertigen Preßkörpers aus dem Werkzeug.
The drawing shows in
  • 1 shows a longitudinal section through a pressing tool on a press, in which the punch and counter-punch can be moved towards one another along a horizontal axis;
  • FIG. 2 shows the tool according to FIG. 1 during filling;
  • 3 shows the tool in the closed state;
  • Fig. 4 shows the tool after applying the hydrostatic pressure and in
  • Fig. 5 shows the removal of the finished compact from the tool.

Das in den Figuren wiedergegebene Preßwerkzeug dient zur Herstellung von Tellern aus pulverförmiger keramischer Masse. Das Preßwerkzeug enthält einen Stempel 10, einen Gegenstempel 11 und eine den Stempel 10 umgebende Matrize 12, die auf diesem Stempel verschiebbar ist.The pressing tool shown in the figures is used to manufacture plates from powdered ceramic mass. The pressing tool contains a stamp 10, a counter-stamp 11 and a die 12 surrounding the stamp 10, which can be moved on this stamp.

Beim wiedergegebenen Ausführungsbeispiel weist der Stempel 10 einen kleineren Durchmesser ats der Gegenstempel 11 auf. Die Matrize 12 besteht aus einem Ringkörper mit einer zylindrischen Führungsöffnung mit einem Durchmesser, der geringfügig größer als der Durchmesser des Stempels 10 ist. In die Innenfläche der Matrize 12 ist eine ringförmige Rinne 13 mit rechteckigem Querschnitt eingearbeitet. Diese Rinne 13 kann über eine radiale Zuführungsöffnung 14 mit einem nicht gezeichneten Vorratsbehälter für das pulverförmige keramische Preßgut verbunden sein. Die Rinne 13 ist an der dem Gegenstempel 11 zugewandten Seite durch einen biegsamen Ring 15 aus Gummi oder einem ähnlichen elastischen Material abgeschlossen. Dieser Ring kann sich bei der Verschiebung der Matrize 12 in Richtung auf den Gegenstempel 11 beim Auftreffen auf dem Gegenstempel verformen, in dem er sich teilweise über den abgerundeten Rand dieses Gegenstempels legt, wie die Fig. 2 und 3 deutlich erkennen lassen. Ein ringförmiger Belag 16 aus Gummi oder Filz sitzt in einer entsprechenden Rinne in der Matrize 12 und begrenzt den Austritt keramischen Pulvers sowie die Bildung von Graten aus den gepreßten keramischen Preßkörpern.In the exemplary embodiment shown, the punch 10 has a smaller diameter than the counter-punch 11. The die 12 consists of an annular body with a cylindrical guide opening with a diameter that is slightly larger than the diameter of the punch 10. An annular groove 13 with a rectangular cross section is incorporated into the inner surface of the die 12. This channel 13 can be connected via a radial feed opening 14 to a storage container (not shown) for the powdered ceramic material to be pressed. The groove 13 is closed on the side facing the counter-punch 11 by a flexible ring 15 made of rubber or a similar elastic material. This ring can deform when the die 12 is displaced in the direction of the counter-punch 11 when it hits the counter-punch, in which it partially lies over the rounded edge of this counter-punch, as can be clearly seen in FIGS. 2 and 3. An annular covering 16 made of rubber or felt sits in a corresponding groove in the die 12 and limits the emergence of ceramic powder and the formation of burrs from the pressed ceramic compacts.

Die Stirnseite des Stempels 10 formt die Oberseite des Tellers aus und ist mit einer dicken elastischen Gummiplatte 19 bedeckt, die selbstreinigend wirkt und in der Nähe des Randes ringförmig vorsteht, wie man bei 20 erkennt. Dadurch ergibt sich an den Preßkörpern ein abgerundeter Rand, der keine oder noch geringe Nacharbeitung erforderlich macht.The end face of the stamp 10 forms the top of the plate and is covered with a thick elastic rubber plate 19, which has a self-cleaning effect and protrudes in a ring near the edge, as can be seen at 20. This results in a rounded edge on the compacts, which requires little or no reworking.

Die Stirnseite des Gegenstempels 11 ist entsprechend der Unterseite des Tellers beim wiedergegebenen Ausführungsbeispiel ausgeformt und weist eine starke Abphasung zur zylindrischen Fläche hin auf. Auch sie ist mit einer elastischen Gummiplatte 22 bedeckt. Der kreisförmige Rand der Platte ist im spitzen Winkel gebogen und besitzt einen umgestülpten Rand, der zwischen einem kegelstumpfförmigen Block 23 und einem Ring 24 gehalten ist, die durch Schrauben mit einem Gegenblock 25 verbunden sind.The end face of the counter-punch 11 is shaped corresponding to the underside of the plate in the illustrated embodiment and has a strong bevel towards the cylindrical surface. It is also covered with an elastic rubber plate 22. The circular edge of the plate is bent at an acute angle and has an everted edge, which is held between a frustoconical block 23 and a ring 24, which are connected to a counter block 25 by screws.

Der Block 23 ist in seinem Mittelteil mit mehreren Leitungen versehen, die die Verbindung zwischen der Stirnseite des Blockes 23 und einer Kammer 26 herstellen, in die Druckmittel eingeführt wird. Dadurch löst sich die Platte 22 vom Block 23 und drückt gegen die vorverdichtete keramische Pulvermasse, wodurch der Preßvorgang hydrostatisch beendet wird.The block 23 is provided in its central part with a plurality of lines which establish the connection between the end face of the block 23 and a chamber 26 into which pressure medium is introduced. As a result, the plate 22 detaches from the block 23 and presses against the pre-compressed ceramic powder mass, as a result of which the pressing process is ended hydrostatically.

Fig. 5 zeigt die Trennung von Stempel und Gegenstempel und damit die Freigabe des fertigen Preßkörpers.Fig. 5 shows the separation of stamp and counter stamp and thus the release of the finished compact.

Claims (7)

1. A pressing tool for producing shell- or platelike pressings, as for example crockery plates, beakers, cups, bowls and the like, from powder material, more specially of a ceramic nature, made up of a stamp (10) and a counter-stamp (11), whose facing end faces are responsible for forming the top and lower sides of the shell-like pressings on pressing the powder material placed therebetween, the stamp (10) and the counter stamp (11) being able to be moved along a level axis towards each other, the powder material being run into a space walled in by the end faces of the stamp and counter-stamp and by a ring-like die (12) placed round the stamp and the counter-stamp, said die being able to be moved into the filling position, characterized in that the die (12) has a shut-off ring-like space (13) on its inner side, said space being in connection with a supply of the powder material, in that at least one of the edges of the end faces of the stamp (10) and the counter-stamp (11) is designed running out towards the edge of the other end face like a ring (at 20) and in that the stamp (10) and the counter-stamp (11) may be moved so far towards each other that a small axial ring-like gap is kept between the edges of their end faces.
2. The pressing tool as claimed in claim 1 characterized in that the end face of at least one of the stamps (10 and 11) has a covering (19 and 22) of elastic material thereon.
3. The pressing too! as claimed in claim 2 characterized in that to the back of the covering (22) there is pressure driving fluid cushion (26).
4. The pressing tool as claimed in claim 3 characterized in that the driving fluid cushion (26) is part of an isostatic pressing system.
5. The pressing tool as claimed in claims 1 and claim 2 or claim 1 and claim 3 or claim 1 and claim 4 characterized in that the covering (22) is pulled over the side of the stamp (11) and is fixed in place by a ring (24) increasing the diameter of the stamp.
6. The pressing tool as claimed in claim 5 characterized in that the side, turned towards the stamp (11) with the increased diameter, of the die (12) has elastic properties, at least on the contact area (at 15) with the stamp (11).
7. The pressing tool as claimed in claim 5 and claim 6 characterized in that the ring (24), responsible for increasing the diameter of the stamp (11), is cut at a slope towards the end face of the stamp.
EP81104574A 1980-07-01 1981-06-15 Press tool for the manufacture of disk-like pressed bodies, particularly plates, dinner plates, cups, dishes or the like from pulverous, preferably ceramic material Expired EP0043019B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81104574T ATE6914T1 (en) 1980-07-01 1981-06-15 PRESSING TOOL FOR THE PRODUCTION OF SHELL-SHAPED PRESSING ELEMENTS, IN PARTICULAR PLATES, PLATES, CUPS, BOWLS OR THE LIKE. MADE OF POWDER, PREFERABLY CERAMIC MATERIAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3024935 1980-07-01
DE3024935A DE3024935C2 (en) 1980-07-01 1980-07-01 Press tool for the production of shell-shaped pressed bodies, such as plates, plates, beakers, bowls or the like., Made of powdered, ceramic material

Publications (2)

Publication Number Publication Date
EP0043019A1 EP0043019A1 (en) 1982-01-06
EP0043019B1 true EP0043019B1 (en) 1984-04-04

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EP81104574A Expired EP0043019B1 (en) 1980-07-01 1981-06-15 Press tool for the manufacture of disk-like pressed bodies, particularly plates, dinner plates, cups, dishes or the like from pulverous, preferably ceramic material

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EP (1) EP0043019B1 (en)
AT (1) ATE6914T1 (en)
DE (1) DE3024935C2 (en)

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DE3332277A1 (en) * 1983-03-30 1984-10-04 Dorst - Maschinen- und Anlagen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel GmbH & Co, 8113 Kochel PRESS FOR PRODUCING DISHES OD. DGL.
DE3339487A1 (en) * 1983-10-31 1985-05-15 Bühler, Eugen, Dipl.-Ing., 8877 Burtenbach METHOD FOR PRODUCING A DRY-COMPRESSED MOLD FROM DRY, RIIBLE-MOLDING MATERIAL, IN PARTICULAR CERAMIC MOLDING MATERIAL
DE3512852A1 (en) * 1985-04-10 1986-10-16 Dorst - Maschinen- und Anlagen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel GmbH & Co, 8113 Kochel PRESSING TOOL FOR THE PRODUCTION OF SHELL-SHAPED PRESSING BODIES, IN PARTICULAR PLATES, PLATES, BOWLS, BOWLS OR THE LIKE. MADE OF POWDER-SHAPED, PREFERABLY CERAMIC MATERIAL
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DE3626365A1 (en) * 1986-08-04 1988-02-11 Dorst Masch & Anlagen DEVICE AND METHOD FOR THE PRODUCTION OF DEEP CYLINDRICAL OR TAPERED MOLDED BODIES PROVIDED WITH A LATERAL CONTINUATION, IN PARTICULAR HANGING CUPS
US5585124A (en) * 1994-12-29 1996-12-17 Andritz Sprout-Bauer, Inc. Quill shafted pellet mill
US7972129B2 (en) * 2005-09-16 2011-07-05 O'donoghue Joseph Compound tooling system for molding applications
CN113459249B (en) * 2021-05-31 2022-10-14 应县欣宇陶瓷有限公司 Ceramic bowl forming machine

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DE1235787B (en) * 1961-03-13 1967-03-02 Keramische Ind Bedarfs Kom Ges Drying press for making dishes
IT992997B (en) * 1973-08-17 1975-09-30 Bettonica L HYDRAULIC PRESS FOR THE MANUFACTURE OF CERAMIC AND SIMILAR TILES AND PLATES
DE2515286A1 (en) * 1975-04-08 1976-10-21 Dorst Keramikmasch Dry compaction press for plate manufacture - has multi-component dies with internal designs incorporating plate foot
DE2657993A1 (en) * 1976-12-21 1978-06-22 Netzsch Maschinenfabrik Ceramic crockery press matrix and patrix - has diaphragm held around rim of matrix over suction chamber below (BR 2.5.78)

Also Published As

Publication number Publication date
ATE6914T1 (en) 1984-04-15
EP0043019A1 (en) 1982-01-06
DE3024935C2 (en) 1986-07-24
DE3024935A1 (en) 1982-01-28

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