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EP0043019A1 - Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, des assiettes, des tasses, des plats ou analogue 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, des assiettes, des tasses, des plats ou analogue en matière pulvérulente, de préférence en matière céramique Download PDF

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Publication number
EP0043019A1
EP0043019A1 EP81104574A EP81104574A EP0043019A1 EP 0043019 A1 EP0043019 A1 EP 0043019A1 EP 81104574 A EP81104574 A EP 81104574A EP 81104574 A EP81104574 A EP 81104574A EP 0043019 A1 EP0043019 A1 EP 0043019A1
Authority
EP
European Patent Office
Prior art keywords
stamp
counter
punch
die
press 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.)
Granted
Application number
EP81104574A
Other languages
German (de)
English (en)
Other versions
EP0043019B1 (fr
Inventor
Keramikmaschinen-Bau Dorst
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
Priority to AT81104574T priority Critical patent/ATE6914T1/de
Publication of EP0043019A1 publication Critical patent/EP0043019A1/fr
Application granted granted Critical
Publication of EP0043019B1 publication Critical patent/EP0043019B1/fr
Expired 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
    • 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 stamp and a counter-stamp, which can be moved relative to one another and their end faces pointing towards one another during pressing of the powdery material filled between them form the top and bottom of the bowl-shaped compact.
  • a press with such a pressing tool is known from DE-AS 23 07 496.
  • the object of the invention is to design the pressing tool in such a way that such reworking can be largely avoided because a structure is obtained directly as a pressing body which has rounded edges.
  • This measure can not only be used for presses, as are known for example from DE-AS 23 07 496, but also on pressing tools, such as are known for example from DE-OS 24 37 852 or 29 01 133.
  • the punch and counter-punch can be moved towards one another along a horizontal axis, and the powdery material is poured into a space which is delimited by the end faces of the punch and counter-punch and a punch and counter-stem, and which can be displaced into the filling position. There are even smooth outer edges with burrs on their edges, which require particularly careful finishing and rounding.
  • the press powder is carried on one side from above into the space just defined, 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 ring has a self-contained ring chamber on the inside, which is connected to a supply for the powdery material.
  • 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 development.
  • 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 enlarging the diameter of the stamp can be beveled towards the stamp face.
  • 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 pressed material.
  • the channel 13 is closed on the side facing the counter stanchion 11 by a flexible ring 15 made of elastic rubber or a similar material.
  • This ring can deform when the die 12 is moved 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 elastic 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.

Landscapes

  • 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)
EP81104574A 1980-07-01 1981-06-15 Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, des assiettes, des tasses, des plats ou analogue en matière pulvérulente, de préférence en matière céramique Expired EP0043019B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81104574T ATE6914T1 (de) 1980-07-01 1981-06-15 Presswerkzeug zur herstellung von schalenfoermigen presskoerpern, insbesondere platten, tellern, bechern, schuesseln o. dgl. aus pulverfoermigem, vorzugsweise keramischen material.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3024935 1980-07-01
DE3024935A DE3024935C2 (de) 1980-07-01 1980-07-01 Preßwerkzeug zur Herstellung von schalenförmigen Preßkörpern, wie Platten, Tellern, Bechern, Schüsseln o.dgl., aus pulverförmigem, keramischem Material

Publications (2)

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

Family

ID=6106161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104574A Expired EP0043019B1 (fr) 1980-07-01 1981-06-15 Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, des assiettes, des tasses, des plats ou analogue en matière pulvérulente, de préférence en matière céramique

Country Status (3)

Country Link
EP (1) EP0043019B1 (fr)
AT (1) ATE6914T1 (fr)
DE (1) DE3024935C2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516011A1 (fr) * 1981-11-10 1983-05-13 Buehler Eugen Procede et dispositif pour la fabrication de pieces moulees a partir d'une masse fluide
US4518341A (en) * 1983-03-30 1985-05-21 Dorst Maschinen-Und Anlagenbau Otto Dorst Und Dipl.-Ing. Walter Schlegel & Co. Press for manufacturing plates, etc.
DE3512852A1 (de) * 1985-04-10 1986-10-16 Dorst - Maschinen- und Anlagen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel GmbH & Co, 8113 Kochel Presswerkzeug zur herstellung von schalenfoermigen presskoerpern, insbesondere platten, tellern, bechern, schuesseln od.dgl. aus pulverfoermigem, vorzugsweise keramischen material
EP0255719A1 (fr) * 1986-08-04 1988-02-10 Dorst Maschinen und Anlagenbau Otto Dorst und Dipl.-Ing Walter Schlegel GmbH & Co. Dispositif et procédé pour fabriquer des pièces moulées creuses de forme conique ou cylindrique, en particulier tasses avec une anse
US4788023A (en) * 1983-10-31 1988-11-29 Eugen Buhler and Hutschenreuther AG Process and apparatus for producing a dry-pressed moulding from a particulate or granular moulding material
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
CN113459249A (zh) * 2021-05-31 2021-10-01 黄兵龙 一种陶瓷碗成型机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524779A1 (de) * 1985-07-11 1987-01-15 Laeis Gmbh Presse zum herstellen von tellern oder dergleichen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1863854A (en) * 1929-11-04 1932-06-21 Champion Porcelain Company Method of and apparatus for shaping articles
DE1235787B (de) * 1961-03-13 1967-03-02 Keramische Ind Bedarfs Kom Ges Trockenpresse zum Herstellen von Geschirrteilen
DE2515286A1 (de) * 1975-04-08 1976-10-21 Dorst Keramikmasch Presse zum trockenpressen von tellern o.dgl.
DE2657993A1 (de) * 1976-12-21 1978-06-22 Netzsch Maschinenfabrik Presswerkzeug zum herstellen keramischer formlinge aus pulverfoermiger masse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT992997B (it) * 1973-08-17 1975-09-30 Bettonica L Pressa idraulica per la fabbrica zione di piastrelle e piatti di materiale ceramico e simili

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1863854A (en) * 1929-11-04 1932-06-21 Champion Porcelain Company Method of and apparatus for shaping articles
DE1235787B (de) * 1961-03-13 1967-03-02 Keramische Ind Bedarfs Kom Ges Trockenpresse zum Herstellen von Geschirrteilen
DE2515286A1 (de) * 1975-04-08 1976-10-21 Dorst Keramikmasch Presse zum trockenpressen von tellern o.dgl.
DE2657993A1 (de) * 1976-12-21 1978-06-22 Netzsch Maschinenfabrik Presswerkzeug zum herstellen keramischer formlinge aus pulverfoermiger masse

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516011A1 (fr) * 1981-11-10 1983-05-13 Buehler Eugen Procede et dispositif pour la fabrication de pieces moulees a partir d'une masse fluide
US4518341A (en) * 1983-03-30 1985-05-21 Dorst Maschinen-Und Anlagenbau Otto Dorst Und Dipl.-Ing. Walter Schlegel & Co. Press for manufacturing plates, etc.
EP0121128A3 (fr) * 1983-03-30 1986-02-05 Dorst Maschinen und Anlagenbau Otto Dorst und Dipl.-Ing Walter Schlegel GmbH & Co. Presse pour la fabrication d'assiettes ou analogues
US4788023A (en) * 1983-10-31 1988-11-29 Eugen Buhler and Hutschenreuther AG Process and apparatus for producing a dry-pressed moulding from a particulate or granular moulding material
DE3512852A1 (de) * 1985-04-10 1986-10-16 Dorst - Maschinen- und Anlagen-Bau Otto Dorst u. Dipl. Ing. Walter Schlegel GmbH & Co, 8113 Kochel Presswerkzeug zur herstellung von schalenfoermigen presskoerpern, insbesondere platten, tellern, bechern, schuesseln od.dgl. aus pulverfoermigem, vorzugsweise keramischen material
EP0255719A1 (fr) * 1986-08-04 1988-02-10 Dorst Maschinen und Anlagenbau Otto Dorst und Dipl.-Ing Walter Schlegel GmbH & Co. Dispositif et procédé pour fabriquer des pièces moulées creuses de forme conique ou cylindrique, en particulier tasses avec une anse
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
CN113459249A (zh) * 2021-05-31 2021-10-01 黄兵龙 一种陶瓷碗成型机

Also Published As

Publication number Publication date
DE3024935A1 (de) 1982-01-28
ATE6914T1 (de) 1984-04-15
DE3024935C2 (de) 1986-07-24
EP0043019B1 (fr) 1984-04-04

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