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 PDFInfo
- 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
Links
- 229910010293 ceramic material Inorganic materials 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title description 3
- 235000003166 Opuntia robusta Nutrition 0.000 title 1
- 244000218514 Opuntia robusta Species 0.000 title 1
- 238000003825 pressing Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 14
- 238000005429 filling process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 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
- 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.
Landscapes
- 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)
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)
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)
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)
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. |
-
1985
- 1985-04-10 DE DE19853512852 patent/DE3512852A1/de active Granted
-
1986
- 1986-03-24 DE DE8686104030T patent/DE3672366D1/de not_active Expired - Lifetime
- 1986-03-24 EP EP86104030A patent/EP0197415B1/fr not_active Expired - Lifetime
- 1986-03-28 US US06/845,449 patent/US4701122A/en not_active Expired - Lifetime
Cited By (2)
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 |
---|---|
US4701122A (en) | 1987-10-20 |
DE3672366D1 (de) | 1990-08-09 |
EP0197415A3 (en) | 1988-12-28 |
EP0197415A2 (fr) | 1986-10-15 |
DE3512852A1 (de) | 1986-10-16 |
DE3512852C2 (fr) | 1990-03-15 |
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