EP0620089B1 - Verfahren und Form zum isostatischen Pressen, insbesondere zum Herstellen von Keramikfliesen - Google Patents

Verfahren und Form zum isostatischen Pressen, insbesondere zum Herstellen von Keramikfliesen Download PDF

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Publication number
EP0620089B1
EP0620089B1 EP94200624A EP94200624A EP0620089B1 EP 0620089 B1 EP0620089 B1 EP 0620089B1 EP 94200624 A EP94200624 A EP 94200624A EP 94200624 A EP94200624 A EP 94200624A EP 0620089 B1 EP0620089 B1 EP 0620089B1
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EP
European Patent Office
Prior art keywords
membrane
die
incompressible fluid
intermediate element
cavities
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
EP94200624A
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English (en)
French (fr)
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EP0620089A3 (de
EP0620089A2 (de
Inventor
Maris Algeri
Nunzio Annovi
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.)
Individual
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27453044&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0620089(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from ITMO930028A external-priority patent/IT1262594B/it
Priority claimed from IT000068 external-priority patent/IT1262621B/it
Priority claimed from ITMO930123A external-priority patent/IT1262666B/it
Priority claimed from ITMO930159A external-priority patent/IT1262688B/it
Priority to EP96201446A priority Critical patent/EP0736363B1/de
Application filed by Individual filed Critical Individual
Priority to EP96200762A priority patent/EP0720896B1/de
Publication of EP0620089A2 publication Critical patent/EP0620089A2/de
Publication of EP0620089A3 publication Critical patent/EP0620089A3/de
Publication of EP0620089B1 publication Critical patent/EP0620089B1/de
Application granted granted Critical
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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/346—Manufacture of moulds
    • 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
    • B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form
    • B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure

Definitions

  • the invention concerns die means, suitable for isostatic moulding ceramic tiles, according to the preamble of claim 1.
  • IT-A-1104511 by the same applicant relates to a method and a device for achieving uniform pressing of ceramic tiles.
  • the method envisages the application to the free surface of the clay mixture introduced into the opening of the die, during the action of pressing of an elastic moulding surface, or elastic membrane, held in firm contact with the clay mixture, to form one face of the tile, by means of an incompressible fluid: this, to neutralize the effects of zones of disuniform density in the body of the formed tile which would cause uneven shrinkage on firing, with consequent variations in the size, or linearity, of the sides of the tile and/or of the planarity of its surface and with the additional possibility of cracking or breakage.
  • said method and device do not always enable sufficiently flat (back) surfaces, and hence sufficiently uniform tile thickness, to be readily achieved, particularly in the case of large formats:
  • a die featuring an auxiliary punch base with, on its front face, a chessboard-like array of large flat squares surrounded by channels for the distribution of the liquid, communicating with the internal surface of the overlying membrane by means of large, corresponding square alveoli, forming part of an intermediate punch-plate superimposed on said auxiliary punch base.
  • the smooth inner surface of the overlying (vulcanized) membrane is moulded to afford an array of large, flat square protruding bosses surrounded by channels corresponding exactly to the aforesaid configuration of the upper face of said base of auxiliary punch.
  • EP-A-0556163 which is per se an intermediate document but concerns the same type of mould, discloses a mould having a plurality of cavities defined by a lattice to which a membrane is anchored; however the lattice cannot be provided with a membrane obtained by vulcanized elastomeric substance, such as rubber or resin, since, when the liquid elastomeric substance is poured on the lattice, the cavities become completely filled with the elastomeric substance and no room is therefore available for the incompressible fluid.
  • IT-U-214739 discloses a punch for uniform pressing of ceramic tiles, comprising a plurality of cavities among which a lattice is inherenty defined, said cavities containing an incompressible fluid, i. e. oil, and being closed on the side facing the clay mixture to be pressed by means of an elastic membrane, the elastic membrane comprising a central zone and a peripheral zone, those parts of the membrane not covering the cavities being anchored to the body of said punch at respective peripheral and intermediate anchoring zones, each cavity being intermediately occupied by a respective piston and serving as a guide for allowing axial movements of the piston inwardly and outwardly with respect to the cavity.
  • an incompressible fluid i. e. oil
  • Each piston is further externally provided with a seal for the incompressible fluid peripherally engaged with the internal surface of the respective cavity in order to prevent oil from coming into contact with the membrane.
  • the pistons deteriorate the corresponding edges of the membrane when they move into the cavities to compensate disuniform density of the clay mixture.
  • the pistons have to be inserted into the cavities before the liquid elastomeric membrane is poured to coat the face of the punch: therefore a difficulty arises in that the pistons cannot be located at precise axial positions inside the cavity, being it essential, for proper functioning, that each piston be located at intermediate sections of the respective cavity, so that they can be moved outwardly, under the pression of the oil, and also inwardly, under the pression of the clay mixture.
  • IT-A-MI92002158 filed on 18/03/1992, which is a prior national right in Italy, additionally discloses elastic planar caps in said cavities.
  • the technical problem is therefore to find a die of the aforesaid type which is easy to manufacture, by providing it with a vulcanised membrane, and in which the membrane is not subjected to deterioration by the action of any movable part inserted into the cavities.
  • the invention solves the above-mentioned technical problem by adopting die means, suitable for isostatic moulding ceramic tiles, comprising two dies (punch and matrix), at least one die having a plurality of cavities containing an incompressible fluid, said cavities being closed on the side facing the clay mixture to be pressed by means of an elastic membrane, the elastic membrane comprising a central zone and a peripheral zone, those parts of the membrane not covering the cavities being anchored to the body of the said semi-die at respective peripheral and intermediate anchoring zones, each cavity being occupied, at an enlarged portion thereof, by a respective intermediate controlling element for controlling the deformation of the membrane interposed between the incompressible fluid and the membrane, characterized in that said intermediate element is elastically deformable under the action of said incompressible fluid, or of the membrane, and said enlarged portion serving as a seat for said intermediate element.
  • the Figures show: 117 (Figure 1), the top, flat surface of punch P, having frame 118; 119, the lowered plane of an alveolus with underlying tapered cavity 120 with liquid inlet hole 121; 122, a hollow cap joining with rim 123 of the alveolus; 124, grooves that surround the raised sections 125 of the membrane 126 that shape the back of the tile during pressing; 127 (on the left of Figure 2) the supporting surface of the bottom face of the elastic pre-pressed plate cap 128; 129, the top face of the elastic pre-pressed hollow cap, having peripheral rim 130; 131, ( Figure 6) longitudinal oil, or liquid in general, inlet channels, communicating with transverse channels 132; 133, the intermediate anchorage zones of membrane 126, achieved with the application of a suitable substance; 134 peripheral anchorage zones; 8, the moulding matrix of the elastic membrane 126.
  • edges of the elastic plate 128 and the external face of rim 130 of the hollow cap can be anchored to rim 123 of the corresponding alveolus: in the first case the liquid being prevented from coming into contact with the anchoring zones 133 and 134.
  • the cap is not anchored along the rim, it becomes easier for the membrane 126 to move as the cap is floating.
  • each cap 129, 130 The join with the top face of each cap 129, 130 is obtained during vulcanization phase of the membrane 126.

Landscapes

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

Claims (5)

  1. Stempelanordnung, geeignet zum isostatischen Formen von Keramikfliesen, mit zwei Stempelwerkzeugen, einem Oberstempel und einer Matrize, wobei wenigstens ein Stempelwerkzeug (P) eine Vielzahl von Hohlräumen (119, 120, 121, 127) aufweist, die ein inkompressibles Fluid enthalten, die Hohlräume auf der der zu pressenden Tonmischung zugewandten Seite durch eine elastische Membran (124, 125, 126) verschlossen sind, die elastische Membran (124, 125, 126) eine zentrale Zone und eine periphere Zone (118) umfaßt, die Teile der Membran (124, 125, 126), die nicht die Hohlräume (119, 120, 121, 127) bedecken, an entsprechenden peripheren und dazwischenliegenden Befestigungszonen an dem Körper des besagten Stempelwerkzeuges (P) befestigt sind, jeder Hohlraum (119, 120, 121, 127) in einem vergrößerten Bereich (119; 127) desselben durch ein entsprechendes, zwischenliegendes Steuerelement (128; 129) zur Steuerung der Deformation der Membran (124, 125, 126) besetzt ist, das zwischen dem inkompressiblen Fluid und der Membran (124, 125, 126) angeordnet ist, dadurch gekennzeichnet, daß das zwischenliegende Element (128; 129) durch die Wirkung des inkompressiblen Fluids oder der Membran (124, 125, 126) elastisch verformbar ist und daß der vergrößerte Bereich (119; 127) als Sitz für das zwischenliegende Element (128; 129) dient.
  2. Stempelanordnung nach Anspruch 1, bei der das zwischenliegende Element die Form einer hohlen Kappe (129) aufweist, die einen hohlen Bereich hat, der auf den entsprechenden Hohlraum (119, 120, 121) zuweist und in direktem Kontakt mit dem inkompressiblen Fluid ist.
  3. Stempelanordnung nach Anspruch 1, bei der das zwischenliegende Element die Form einer scheibenförmigen Kappe (128) aufweist.
  4. Stempelanordnung nach einem der vorhergehenden Ansprüche, bei der das zwischenliegende Element (128; 129) eine äußere Fläche aufweist, die im wesentlichen koplanar zu den Bereichen des Körpers des Oberstempels (P) ist, an denen die Membran (124, 125, 126) befestigt ist.
  5. Stempelanordnung nach einem der vorhergehenden Ansprüche, bei der die Membran (124, 125, 126) an dem zwischenliegenden Element (128; 129) befestigt ist.
EP94200624A 1993-03-17 1994-03-11 Verfahren und Form zum isostatischen Pressen, insbesondere zum Herstellen von Keramikfliesen Expired - Lifetime EP0620089B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96200762A EP0720896B1 (de) 1993-03-17 1994-03-11 Form zum isolatischen Pressen
EP96201446A EP0736363B1 (de) 1993-03-17 1994-03-11 Form, insbesondere zum Pressen von Keramikfliesen

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ITMO930028 1993-03-17
ITMO930028A IT1262594B (it) 1993-03-17 1993-03-17 Stampo atto a rendere uniforme la pressatura nelle piastrelle ceramiche.
IT000068 IT1262621B (it) 1993-05-21 1993-05-21 Perfezionamenti negli stampi per la pressatura uniforme delle piastrelle ceramiche.
ITMO930068 1993-05-21
ITMO930123 1993-09-29
ITMO930123A IT1262666B (it) 1993-09-29 1993-09-29 Stampo per la pressatura isostatica, particolarmente di piastrelle ceramiche a nervature profonde.
ITMO930159A IT1262688B (it) 1993-12-15 1993-12-15 Stampo perfezionato per la pressatura uniforme di piastrelle ceramiche
ITMO930159 1993-12-15

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP96201446.0 Division-Into 1994-03-11
EP96200762.1 Division-Into 1994-03-11

Publications (3)

Publication Number Publication Date
EP0620089A2 EP0620089A2 (de) 1994-10-19
EP0620089A3 EP0620089A3 (de) 1995-03-15
EP0620089B1 true EP0620089B1 (de) 1996-12-11

Family

ID=27453044

Family Applications (3)

Application Number Title Priority Date Filing Date
EP94200624A Expired - Lifetime EP0620089B1 (de) 1993-03-17 1994-03-11 Verfahren und Form zum isostatischen Pressen, insbesondere zum Herstellen von Keramikfliesen
EP96201446A Expired - Lifetime EP0736363B1 (de) 1993-03-17 1994-03-11 Form, insbesondere zum Pressen von Keramikfliesen
EP96200762A Revoked EP0720896B1 (de) 1993-03-17 1994-03-11 Form zum isolatischen Pressen

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP96201446A Expired - Lifetime EP0736363B1 (de) 1993-03-17 1994-03-11 Form, insbesondere zum Pressen von Keramikfliesen
EP96200762A Revoked EP0720896B1 (de) 1993-03-17 1994-03-11 Form zum isolatischen Pressen

Country Status (4)

Country Link
EP (3) EP0620089B1 (de)
AT (1) ATE146115T1 (de)
DE (1) DE69401084T2 (de)
ES (3) ES2097607T3 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1269262B (it) * 1994-09-13 1997-03-26 Maris Algeri Stampo isobarico per la pressatura di piastrelle ceramiche, e metodo relativo
EP0759346B1 (de) * 1995-08-18 2001-11-21 Carlo Antonio Camorani Form zur isostatischen Pressen
IT1279893B1 (it) * 1995-12-18 1997-12-18 F D S S R L Semistampo per piastrelle ceramiche perfezionato
DE19629413A1 (de) * 1996-07-22 1998-01-29 Erlus Baustoffwerke Keramischer Falzdachziegel
DE19731146C1 (de) * 1997-07-21 1999-02-25 Dietrich Engmann Isostatischer Preßstempel zum Herstellen keramischer Fliesenrohlinge und Presse mit diesem Preßstempel
EP1008438B2 (de) * 1998-12-09 2009-11-25 System S.p.A. Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen
ES2181514B1 (es) * 1999-07-15 2004-06-01 Constantino Parra Rodriguez Dispositivo para regular la compactacion en punzones para prensas.
ITRE20050033A1 (it) * 2005-03-25 2006-09-26 Cbm Srl Punzone ceramico tipo marca
ITBO20050268A1 (it) * 2005-04-21 2006-10-22 Trebax Srl Stampo per la fabbricazione di piastrelle ceramiche
ITMI20070298A1 (it) * 2007-02-16 2008-08-17 Martinelli Ettore Srl Tampone isostatico per la pessatura di piastrelle e relativo metodo di fabbricazione
ITMO20080040A1 (it) * 2008-02-15 2009-08-16 Sacmi Apparato e metodo di pressatura
IT1396712B1 (it) * 2009-11-18 2012-12-14 Ferrari Carlo Societa Per Azioni Off Punzone isostatico per piastrelle.
ITRM20100294A1 (it) * 2010-05-31 2011-12-01 Mass Spa "metodo e stampo per la formatura di manufatti ad uso civile ed ornamentale"
IT1400599B1 (it) * 2010-06-18 2013-06-14 Trebax S R L Stampo per fabbricare manufatti ceramici.
ITMO20110174A1 (it) * 2011-07-18 2013-01-19 Gape Due S P A Stampo isostatico, particolarmente per piastrelle ceramiche
ITMI20111917A1 (it) * 2011-10-24 2013-04-25 Martinelli Ettore Srl Tampone adattativo per la pressatura di prodotti ceramici, quali piastrelle e simili
ITPD20120277A1 (it) * 2012-09-20 2014-03-21 Mass Spa Stampo per piastrelle
ITMI20131699A1 (it) * 2013-10-15 2015-04-16 Martinelli Ettore Srl Tampone isostatico di pressatura per la produzione di piastrelle e simili e metodo di realizzazione
IT201600079937A1 (it) * 2016-07-29 2018-01-29 I Dea Re S R L Tampone per la formatura di piastrelle
CN107139315A (zh) * 2017-01-23 2017-09-08 佛山市新鹏工业服务有限公司 瓷砖成型液压模具
IT201700036509A1 (it) * 2017-04-03 2018-10-03 I Dea Re S R L Tampone isostatico per la formatura di piastrelle
ES2745575A1 (es) * 2018-08-30 2020-03-02 Asitec Ceram S L Punzon isostatico
IT201900002749A1 (it) * 2019-02-26 2020-08-26 Officina Ferrari Carlo Spa Tampone per la pressatura di polveri
IT202100014210A1 (it) * 2021-05-31 2022-12-01 Annovi S R L Tampone isostatico per la pressatura di polveri ceramiche

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1160590A (en) * 1967-03-20 1969-08-06 Yuken Kogyo Co Ltd An improved method and apparatus for the manufacture of Dish-Shaped Ceramic Articles
US4370120A (en) * 1978-11-28 1983-01-25 Foster Robert D Compacting press with expandable body
US4937025A (en) * 1987-09-30 1990-06-26 Hydra Corporation Molding apparatus and method
IT1234151B (it) * 1989-05-30 1992-05-04 Mass Spa Metodo per la coniatura di piastrelle ceramiche uniformemente compattate, mezzi per attuare il detto e piastrelle cosi' ottenute
IT1240242B (it) * 1992-02-12 1993-11-30 Sichenia Gruppo Ceramiche S.P.A. Stampo per piastrelle ceramiche
IT1258686B (it) * 1992-05-15 1996-02-27 Mass Spa Tampone ceramico tipo muratura

Also Published As

Publication number Publication date
DE69401084T2 (de) 1997-07-10
EP0720896B1 (de) 1997-12-03
EP0620089A3 (de) 1995-03-15
EP0736363A2 (de) 1996-10-09
EP0736363A3 (de) 1997-02-05
ATE146115T1 (de) 1996-12-15
DE69401084D1 (de) 1997-01-23
ES2097607T3 (es) 1997-04-01
EP0736363B1 (de) 1997-12-03
ES2111409T3 (es) 1998-03-01
ES2112073T3 (es) 1998-03-16
EP0720896A1 (de) 1996-07-10
EP0620089A2 (de) 1994-10-19

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