EP0197415B1 - Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, assiettes, des tasses, des plats ou analogues en matière pulvérulente, de préférence en matière céramique - Google Patents

Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, assiettes, des tasses, des plats ou analogues en matière pulvérulente, de préférence en matière céramique Download PDF

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Publication number
EP0197415B1
EP0197415B1 EP86104030A EP86104030A EP0197415B1 EP 0197415 B1 EP0197415 B1 EP 0197415B1 EP 86104030 A EP86104030 A EP 86104030A EP 86104030 A EP86104030 A EP 86104030A EP 0197415 B1 EP0197415 B1 EP 0197415B1
Authority
EP
European Patent Office
Prior art keywords
annular
die
connection
counterdie
pressing tool
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 - Lifetime
Application number
EP86104030A
Other languages
German (de)
English (en)
Other versions
EP0197415A2 (fr
EP0197415A3 (en
Inventor
Heinrich Dipl.-Ing. Reimche (Fh)
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.)
DORST Technologies GmbH and Co KG
Original Assignee
DORST Technologies GmbH and Co KG
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 DORST Technologies GmbH and Co KG filed Critical DORST Technologies GmbH and Co KG
Publication of EP0197415A2 publication Critical patent/EP0197415A2/fr
Publication of EP0197415A3 publication Critical patent/EP0197415A3/de
Application granted granted Critical
Publication of EP0197415B1 publication Critical patent/EP0197415B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/021—Feeding the unshaped material to moulds or apparatus for producing shaped articles by fluid pressure acting directly on the material, e.g. using vacuum, air pressure

Definitions

  • the invention relates to a pressing tool for the production of bowl-shaped pressing bodies, in particular plates, plates, cups, bowls or the like.
  • a pressing tool for the production of bowl-shaped pressing bodies, in particular plates, plates, cups, bowls or the like.
  • Such a pressing tool is known from EP patent 0 043 019.
  • the filling of the material to be pressed takes place with the help of gravity. Due to the relatively small filling slots, the filling process is relatively slow. In the case of parts with steep, with vertical and / or with relief walls, there is a risk that the filling process will be interrupted, but at least is uneven, because the effect of gravity is partially canceled out by frictional forces acting on the filling material.
  • the object of the invention is to redesign the known pressing tool so that filling is possible with the aid of negative pressure applied to the filling space.
  • the advantage of the known teaching must be maintained, which is that faulty compacts can be avoided due to defects in the filling process and, in addition, reworking can be dispensed with, because a structure is obtained directly as a compaction object which has rounded edges.
  • filling with the help of vacuum or vacuum is in itself already part of the state of the art.
  • the filling is carried out by feeding the material to be pressed within the boundary of the molding. This means that markings in the filling area cannot be avoided. This forces the filling head to be exchanged for a smooth-edged press head or to remove the pressed markings in a complex manner.
  • the displaceable annular part is a shaping part and must therefore be designed in such a way that it corresponds to the desired rim of the plate.
  • connection for the material feed preferably consists of an insert body which can be pushed into the annular part and is provided with at least one filling funnel for the material to be filled.
  • the vacuum connection is offset against the annular gap and is connected to the latter via an annular play between the outer edge of the stamp or counter-stamp and the annular part.
  • 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 support ring 12 surrounding the stamp 10.
  • the support ring 12 can be displaced relative to the stamps 10 and 11 in the direction of movement of the two stamps. 1, the support ring 12 lies in the filling position on a sealing ring 13, which brings about a vacuum-tight seal towards the outside.
  • the mechanism for that Movement of the support ring is of no importance here, so that it is not captured in the drawing.
  • the end face of the stamp 10 forms the underside of the plate and is covered with an elastic rubber covering 14, behind which channels 15 open out.
  • channels 15 are connected via a channel 16 and channels 17 to an annular channel 18 which can be pressurized with a pressure medium. Additional branch lines can be seen at 19 and 20.
  • the stamp 11 is also covered with a rubber cover 21, behind which channels 22 open, which can be fed by a central channel 23. The stamp 11 can thus be pressurized from the outside, which allows the molded plate to be easily detached from the stamp 11 or its rubber cover 21 when the stamps 10 and 11 are moved apart again.
  • a vacuum connection with a suction line 26 is connected, specifically via a connecting piece 34, which is arranged in the form of the projecting annular edge 28 opposite the boundary of the part that backs the edge region of the membrane 21.
  • the suction line 26 is arranged axially offset from an axial annular gap 29 which remains on the edge of the counter-punch 11 and the punch 10 when the pressing tool is closed and is connected to this annular gap 29 by means of an annular play. 1 is formed by a radial annular gap 30 between the outer edge of the corresponding stamp 11 and the adjacent inner edge of the annular part 27, which connects the suction line 26 to the axial annular gap 29.
  • the radial and the axial annular gap 30 and 29 extend according to FIG. 3 over the area indicated there by the round arrow 31.
  • the molded product is therefore placed in the region 25 'and the air is sucked out of the space between the punches 10 and 11 via the region 31.
  • the axial annular gap 29 can be connected to the suction line via a further radial annular gap 32.
  • This radial annular gap 32 continues here via an axial ring slot 33 between the annular part 27 and the support ring 12 into the axial annular gap 23.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Claims (6)

1. Outil de pressage pour la fabrication de corps pressés en forme de plats, en particulier de plaques, d'assiettes, de tasses, de coupes, de plats ou analogues, en matière pulvérulente, de préférence en matière céramique, constitué par un poinçon et par un contre-poinçon dont les surfaces frontales tournées l'une vers l'autre forment, en comprimant la matière pulvérulente introduite entre elles, la face supérieure et la face inférieure du corps pressé en forme de plat, le poinçon et le contre-poinçon pouvant se déplacer l'un par rapport à l'autre et la matière pulvérulente étant introduite dans un espace délimité par les surfaces frontales du poinçon et du contre-poinçon et par une pièce annulaire comportant un raccord pour l'amenée des matières pulvérulentes qui peut se déplacer par rapport au poinçon et au contre- poinçon dans la direction dans laquelle ils se déplacent l'un par rapport à l'autre, et l'un au moins des bords des surfaces frontales du poinçon et du contre-poinçon dépassant en forme d'anneau dans la direction du bord de l'autre surface frontale et le poinçon et le contrepoinçon ne pouvant se déplacer l'un vers l'autre que de manière à laisser un intervalle annulaire de dimension axiale réduite entre les bords de leurs surfaces frontales, caractérisé en ce que le bord dépassant en forme d'anneau du poinçon correspondant (11) prend appui sur une partie saillante extérieure (28) orientée dans le sens axial sur laquelle peut se déplacer la pièce annulaire (27) qui comporte au moins un raccord pour le vide (26).
2. Outil de pressage selon la revendication 1, caractérisé en ce que le raccord (26) pour le vide et le raccord (25) pour l'amenée des matières pulvérulentes sont situées l'un en face de l'autre.
3. Outil de pressage selon l'une des revendications 1 ou 2, caractérisé en ce que le raccord (25) pour l'amenée des matières pulvérulentes est constitué par une pièce d'insertion qui peut être introduite dans la partie annulaire (27) et comporte au moins un entonnoir de chargement (figure 2).
4. Outil de pressage selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que le raccord (26) pour le vide est décalé par rapport à l'intervalle annulaire (29), qui subsiste dans le sens axial, au niveau des bords du poinçon (10) et du contrepoinçon (11) lorsque l'outil de pressage est fermé, et communique avec cet intervalle par au moins un jeu axial.
5. Outil de pressage selon la revendication 4, caractérisé en ce que le raccord (26) pour le vide communique avec l'intervalle annulaire axial (29) par un espace annulaire radial (30) situé entre le bord extérieur de la partie saillante extérieure (28) et le bord intérieurvoisin de la pièce annulaire (27).
6. Outil de pressage selon l'une des revendications 4 ou 5, caractérisé en ce que le raccord (26) pour le vide communique avec l'intervalle annulaire axial (29) par une fente annulaire axiale (33) située entre la pièce annulaire (27) et la bague d'appui (12) ainsi qu'avec un intervalle annulaire radial (32) relié à la fente annulaire (33).
EP86104030A 1985-04-10 1986-03-24 Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, assiettes, des tasses, des plats ou analogues en matière pulvérulente, de préférence en matière céramique Expired - Lifetime EP0197415B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853512852 DE3512852A1 (de) 1985-04-10 1985-04-10 Presswerkzeug zur herstellung von schalenfoermigen presskoerpern, insbesondere platten, tellern, bechern, schuesseln od.dgl. aus pulverfoermigem, vorzugsweise keramischen material
DE3512852 1985-04-10

Publications (3)

Publication Number Publication Date
EP0197415A2 EP0197415A2 (fr) 1986-10-15
EP0197415A3 EP0197415A3 (en) 1988-12-28
EP0197415B1 true EP0197415B1 (fr) 1990-07-04

Family

ID=6267637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104030A Expired - Lifetime EP0197415B1 (fr) 1985-04-10 1986-03-24 Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, assiettes, des tasses, des plats ou analogues en matière pulvérulente, de préférence en matière céramique

Country Status (3)

Country Link
US (1) US4701122A (fr)
EP (1) EP0197415B1 (fr)
DE (2) DE3512852A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1990165A2 (fr) 2007-05-10 2008-11-12 Dorst Technologies GmbH & Co. KG Dispositif de pressage avec un moule et moule de pressage pour la réalisation d'articles obtenus à partir d'un matériau moulable

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210337C1 (fr) * 1992-03-30 1993-07-22 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De
DE19648844C1 (de) * 1996-11-26 1997-09-18 Jenoptik Jena Gmbh Einrichtung und Verfahren zur Abformung mikrosystemtechnischer Strukturen
DE102004036111A1 (de) * 2004-07-24 2006-02-16 Dorst Technologies Gmbh & Co. Kg Pressenanordnung mit einer Pressenform, Pressenform bzw. Verfahren zum Pressen von Pressgut zu einem Artikel
RU209122U1 (ru) * 2021-10-18 2022-02-02 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Вентилируемая пресс-форма

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935700A1 (de) * 1979-09-04 1981-03-19 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Presswerkzeug zum herstellen keramischer gegenstaende
US4473526A (en) * 1980-01-23 1984-09-25 Eugen Buhler Method of manufacturing dry-pressed molded articles
DE3018138A1 (de) * 1980-05-12 1981-11-19 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Presswerkzeug zum herstellen keramischer formlinge aus pulverfoermiger masse
DE3024935C2 (de) * 1980-07-01 1986-07-24 Dorst-Keramikmaschinen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel, 8113 Kochel Preßwerkzeug zur Herstellung von schalenförmigen Preßkörpern, wie Platten, Tellern, Bechern, Schüsseln o.dgl., aus pulverförmigem, keramischem Material
DE3143550A1 (de) * 1981-11-03 1983-05-11 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Presswerkzeug zum herstellen keramischer formlinge aus pulverfoermiger masse
DE3144678A1 (de) * 1981-11-10 1983-05-19 Eugen Dipl.-Ing. 8871 Burtenbach Bühler Verfahren und einrichtung zur herstellung von formlingen aus einer rieselfaehigen masse
DE3239815A1 (de) * 1982-10-27 1984-05-03 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Presswerkzeug zum isostatischen pressen keramischer formlinge
DE3332277A1 (de) * 1983-03-30 1984-10-04 Dorst - Maschinen- und Anlagen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel GmbH & Co, 8113 Kochel Presse zum herstellen von tellern od. dgl.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1990165A2 (fr) 2007-05-10 2008-11-12 Dorst Technologies GmbH & Co. KG Dispositif de pressage avec un moule et moule de pressage pour la réalisation d'articles obtenus à partir d'un matériau moulable
DE102007021898A1 (de) 2007-05-10 2008-11-13 Dorst Technologies Gmbh & Co. Kg Pressenanordnung mit einer Pressenform bzw. Pressenform zum Pressen von Pressgut zu einem Artikel

Also Published As

Publication number Publication date
EP0197415A2 (fr) 1986-10-15
EP0197415A3 (en) 1988-12-28
DE3512852C2 (fr) 1990-03-15
DE3672366D1 (de) 1990-08-09
DE3512852A1 (de) 1986-10-16
US4701122A (en) 1987-10-20

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