EP1008438B1 - Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen - Google Patents

Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen Download PDF

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Publication number
EP1008438B1
EP1008438B1 EP19980123386 EP98123386A EP1008438B1 EP 1008438 B1 EP1008438 B1 EP 1008438B1 EP 19980123386 EP19980123386 EP 19980123386 EP 98123386 A EP98123386 A EP 98123386A EP 1008438 B1 EP1008438 B1 EP 1008438B1
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EP
European Patent Office
Prior art keywords
segments
portions
opposite
spacers
power 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
EP19980123386
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English (en)
French (fr)
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EP1008438A1 (de
EP1008438B2 (de
Inventor
Franco Stefani
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System SpA
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System SpA
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Application filed by System SpA filed Critical System SpA
Priority to EP98123386A priority Critical patent/EP1008438B2/de
Priority to DE1998629296 priority patent/DE69829296T3/de
Priority to ES98123386T priority patent/ES2236862T5/es
Publication of EP1008438A1 publication Critical patent/EP1008438A1/de
Publication of EP1008438B1 publication Critical patent/EP1008438B1/de
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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
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/048—Laminated frame structures

Definitions

  • the invention relates to a structure for presses, in particular for forming ceramic products.
  • the field of application of the invention is very wide and certainly comprises all possible applications where a forming or plastic deformation is to take place by pressing with the force being applied in a preferably vertical direction.
  • the invention can be utilised in forming ceramic products, especially tiles.
  • the prior art teaches hydraulic presses for forming tiles which exhibit a structure connecting all the mobile and fixed parts. These presses are particularly rigid and have a typically closed frame shape, normally with two uprights with access to the work plane from two opposite sides.
  • tile-forming presses exhibit a free space (as large as possible) between the two uprights or columns (which space constitutes the inlet mouth for the material to be formed).
  • This space is dimensioned on the largest dimension of the rectangle to be pressed, which is the flat surface on which the pressing action is carried out, necessarily discontinuously and intermittently.
  • the height of structures such as the one described above is substantially due to the technical/constructional characteristics, which require the use of a base and an upper crossbeam, connected by the uprights, which have to be very thick - vertically - to guarantee that the two planes absorbing the reactions deriving from the pressing force have a sufficient resistance to deformation.
  • the total height of the structure can reach above 7 metres, of which about a third is interred.
  • the main aim of the present invention is to overcome these limitations in the prior art by providing a compact, light and structurally simple press.
  • a further aim of the invention is to realize a press which is structured according to a modular concept by virtue of which the maximum pressing force can be varied simply and without having to change the input mouth.
  • An advantage of the invention consists in the fact that a structure is provided which in comparison with other structures having a similar maximum compression potential is characterized by its considerable lightness and very contained mass.
  • a still further advantage of the invention is that it is generally speaking constructionally very simple and, more in particular, its modularity makes it very easy to assemble.
  • a yet further advantage of the invention is its compactness, both in terms of transportability and in terms of locatability in the plant of destination.
  • the invention can be used in a ceramic tile production plant, for powder pressing, and more specifically it can be incorporated into a continuous forming line comprising a mobile transport plane for supporting both the material (powders) to be pressed and the formed material ready for pressing by crossing through a forming device (die) coupled to the invention.
  • 1 denotes in its entirety a resistance element which comprises an annular element 2 internally of which two segments 3 are located in diametrally opposite positions.
  • the entire element 1 exhibits a flat configuration in which the first two dimensions, width and height, are much greater than the third dimension, depth, which is constant.
  • the configuration of the resistance element 1 is symmetrical with respect to two reciprocally perpendicular axes.
  • the internal profile of the annular element 2 is substantially constituted by two symmetrical arcs of circumference, reciprocally connected up, to which the first parts of shaped edges 30 of the two opposing segments 3 are coupled.
  • the first portions of the shaped edges 30 have convex profiles and are geometrically shaped such as to be contactingly couplable to the symmetrically opposite corresponding arc-shaped portions constituting part of the internal edge of the annular element 2.
  • the annular element 2 and the segments 3 are made from a single sheet of steel cut accordingly.
  • the segments 3 are half-moon shaped and exhibit a straight second portion of edge 31 which is opposite to the first portion 30.
  • the second portions 31 are predisposed to be opposite and facing each other at a predetermined distance, in such a way as to identify a space in which a power tool 5 can be housed, which in the example is a press for powder materials.
  • the tool 5 discharges the equal and opposite reactions of the pressing action on the second portions 31.
  • the coupling of the first portions 30 in the corresponding arc-shaped portions constituting part of the internal edge of the annular element 2 confers freedom of oscillation on the segments 3 with respect to the annular element 2, so that in any situation a relative adjustment is possible of the segments 3 themselves, which brings them into a position at which the respective first portions 30 are both facing one another and parallel.
  • the illustrated embodiment comprises a plurality of identical said resistance elements 1, arranged facing one another and consecutively aligned at predetermined reciprocal distances.
  • Special means maintain the second portions 31 of each resistance element 1 at a predetermined distance. These means also maintain the various resistance elements 1 aligned and a predetermined distances.
  • the means comprise two parallelepiped spacers specially dimensioned and suitable for being interposed between reciprocally facing second portions 31 of the two segments 3 and against opposite tracts of each annular element 2 in such a way that a chamber or free space is defined in which the power tool 5 can be housed.
  • the spacers 4 are dimensioned in such a way that their interpositioning with respect to the second portions 31 is fixed by interference.
  • the spacing of the resistance elements 1 is realised by virtue of the fact that the spacers 4 exhibit, at the faces thereof turned towards the tracts of the annular elements 2 they are set against, first hollow seatings 40, each of which is predisposed to receive in a joint-arrangement the internal end of a said tract of annular element 2.
  • first hollow seatings 40 are equally spaced one from another.
  • the spacers 4 further exhibit, at their opposite ends destined to couple with the second portions 31 of the segments 3, second hollow seatings 41, each of which joint-fits with the end portion of a segment 3 bearing a second portion 31.
  • the second hollow seatings 41 are arranged in succession at predetermined distances - in the present example, equal - so that each of them is perfectly centred on a corresponding first hollow seating 40.
  • the vertical axis y-y of symmetry of the element or elements identifies the direction of the resultant of the forces transmitted by the power tool 5 to the two opposite segments 3 of each resistance element.
  • the power tool 5 comprises a lower body 6 and an upper body 7 between which objects or the material to be pressed can be inserted, and a pneumatic piston comprising a chamber 9 into which pressurised fluid is sent and a base 8.
  • the chamber 9 is superiorly closed by a diaphragm 10 on an upper surface of which the lower body 6 is situated and bears down.
  • the base 8 rests on the surface generated by the second portions 31 of the lower segments 3, while the upper body 7 is maintained in contact with the surface generated by the second parts 31 of the upper segments 3.
  • the pressing action is actuated by sending pressurised fluid into the chamber 9 and can be performed on powder material arranged on an upper branch 11 of a ring-wound conveyor belt 10.
  • the upper branch 11 longitudinally crosses the whole press and exhibits a part which is upstream of the press itself, constituting the support on which the powder loads destined to be formed by pressing are prepared, and a part which is downstream of the press, which acts as a conveyor for removing the products (tiles).
  • the branch 11 is comprised between the lower body 6 and the upper body 7, against which the powder material is compressed and formed during the pressing action.
  • the portion of branch 11 which finds itself between the lower and upper bodies 6 and 7 functions as the lower closure or bottom die of the die.
  • the conveyor is returned via the lower branch 12 housed freely below the body of the press between the two rest feet 13 provided on each resistance element 1, fashioned out of the annular elements 2.
  • second spacers 14 can be provided, located between the facing surfaces of any two consecutive annular elements 2.
  • the structure of the press is free of welded joints and bolts. In rest condition it is held together by the spacers 4 which not only constitute a forced joint, but also hold in position the segments 3 and the annular elements 2 through the joint-couplings with the hollow seatings 41 and 40.
  • Mounting the structure is conceptually very simple and requires external equipment for positioning the various elements up until the spacers are forced into place.
  • the interference between the couplings is calculated so as to achieve a pre-load on the annular elements 2 which is usually beneath the maximum pressing force the structure has been designed for. Zeroing the pre-load by application of the pressing force will not modify the reciprocal positioning of the various elements, so the relative positions are guaranteed by the spacers 4.
  • the second portions 31 generate the planes to which the base 8, with the piston 6, and the upper body 7, comprising the special die between which the powder is formed and pressed are fixed.
  • the special conformation of the single resistance elements 1, determined by the coupling of the segment pairs 3 with the corresponding annular elements 2, enables a particularly advantageous distribution of the stress loads (applied in the y-y axis direction) which induces on each annular element 2 a state of tension distributed so as to exploit the material to the full.
  • the modular structure while bringing no change to the mouth of the press, enables, for example, the maximum pressing force to be increased simply by adding further resistance elements, thus increasing the productive capacity of each pressing cycle.
  • the total stress load that the whole structure can bear is given by the sum of the load capacity of each of the resistance elements 1.
  • the small dimensions of the structure mean that it can be easily transported, located and installed in the production plant.

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)

Claims (13)

  1. Rahmenanordnung für Pressen, insbesondere zum Formen von Keramikfliesen, enthaltend:
    eine widerstandsfähige Struktur, bestehend aus wenigstens einem widerstandsfähigen Element (1), welches ein ringförmiges Element (2) enthält, in dessen Innerem in entgegengesetzten Positionen zwei Segmente (3) aufgenommen sind; wobei jedes der genannten Segmente (3) einen ersten Randabschnitt (30) aufweist, welcher geformt ist, um sich mit einem entsprechend geformten Abschnitt eines Innenrandes des genannten ringförmigen Elementes (2) zu verbinden; wobei jedes der genannten Segmente ebenfalls einen zweiten Randabschnitt (31) aufweist, welcher entgegengesetzt von dem ersten Abschnitt (30) angeordnet ist; und wobei Mittel (4) vorgesehen sind, um die genannten zweiten Randabschnitte (31) auf einem bestimmten Abstand voneinander zu halten;
    wenigstens ein Leistungswerkzeug (5), welcher eine Presswirkung ausübt, indem es einen zu pressenden Gegenstand oder ein Pulvermaterial zwischen zwei Körpern zusammenpresst, welches Leistungswerkzeug (5) zwischen den einander zugewandten zweiten Randabschnitten (31) der genannten Segmente (3) auf solche Weise eingesetzt ist, dass auf die genannten zweiten Abschnitte (31) gleiche und entgegengesetzte Reaktionen übertragen werden, die sich aus der genannten Presswirkung ergeben.
  2. Rahmenanordnung nach Patentanspruch 1, dadurch gekennzeichnet, dass die genannten Mittel, um die Segmente (3) auf einem bestimmten Abstand voneinander halten, zwischen den einander zugewandten zweiten Randabschnitten (31) der beiden Segmente (3) eingesetzt sind.
  3. Rahmenanordnung nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass sie eine Anzahl der genannten widerstandsfähigen Elemente (1) enthält, die einander zugewandt angeordnet und mit einem bestimmten gegenseitigen Abstand voneinander aufeinanderfolgend ausgerichtet sind.
  4. Rahmenanordnung nach Patentanspruch 3, dadurch gekennzeichnet, dass die widerstandsfähigen Elemente (1) in einer bausteinartigen Anordnung und Organisation zusammengesetzt werden können, durch welche eine Veränderung der Zahl der zusammengesetzten Elemente (1) eine proportionale Veränderung der maximal aufnehmbaren Presskraft ermöglicht.
  5. Rahmenanordnung nach Patentanspruch 4, dadurch gekennzeichnet, dass die genannten Mittel, um die Segmente (3) auf einem bestimmten Abstand voneinander zu halten, zwei parallelflache Abstandsstücke (4) enthalten, welche zwischen den einander zugewandten zweiten Abschnitten (31) der beiden Segmente (3) eingesetzt werden können und an den beiden, sich diametral gegenüberliegenden Abschnitten eines jeden genannten ringförmigen Elementes (2) auf solche Weise anliegen, dass ein Freiraum zwischen den sich gegenüberliegenden Seiten der beiden Abstandsstücke (4) und den zweiten Abschnitten (31) gebildet wird, in welchem Freiraum das Leistungswerkzeug (5) aufgenommen ist.
  6. Rahmenanordnung nach Patentanspruch 5, dadurch gekennzeichnet, dass die beiden Abstandsstücke (4) auf solche Weise ausgelegt sind, dass deren Verbindung durch Einsetzen zwischen die beiden Abschnitte (3 1) eine feststehende Interferenzverbindung ist.
  7. Rahmenanordnung nach Patentanspruch 6, dadurch gekennzeichnet, dass die genannten Abstandsstücke (4) an ihren den ringförmigen Elementen (2) zugewandten Flächen erste hohle Sitze (40) aufweisen, von welchen jeder dazu vorgesehen ist, in einer passrechten Verbindung einen Innenrand eines Abschnittes des ringförmigen Elementes (2) aufzunehmen; wobei die genannten ersten hohlen Sitze (40) aufeinanderfolgend und mit bestimmten Abständen voneinander angeordnet sind.
  8. Rahmenanordnung nach Patentanspruch 7, dadurch gekennzeichnet, dass die genannten Abstandsstücke (4) an ihren entgegengesetzten Kanten, dazu bestimmt, sich mit den einander zugewandten zweiten Abschnitten (31) der Segmente (3) zu verbinden, zweite hohle Sitze (41) aufweisen, von welchen jeder dazu vorgesehen ist, in einer passrechten Verbindung ein Ende eines den genannten zweiten Abschnitt (31) tragenden Segmentes (3) aufzunehmen; wobei die genannten zweiten hohlen Sitze (41) aufeinanderfolgend und mit bestimmten Abständen voneinander angeordnet sind, und wobei jeder derselben zu einem entsprechenden ersten hohlen Sitz (40) zentriert ist.
  9. Rahmenanordnung nach Patentanspruch 6, 7 oder 8, dadurch gekennzeichnet, dass der genannte erste geformte Randabschnitt von jedem Segment (3) eine konvexe gebogene Form haben kann.
  10. Rahmenanordnung nach Patentanspruch 9, dadurch gekennzeichnet, dass wenigstens ein Teil des ersten geformten Randabschnittes (30) eines jeden Segmentes (3) ein als Umfangsbogen geformtes Profil aufweist.
  11. Rahmenanordnung nach Patentanspruch 9 oder 10, dadurch gekennzeichnet, dass die widerstandsfähigen Elemente (1) der Anzahl von widerstandsfähigen Elementen (1) jeweils eine flache Konfiguration aufweisen, in welcher zwei Abmessungen, Breite und Höhe, viel grösser sind als eine dritte Abmessung, die Tiefe, welche praktisch konstant ist; wobei die Konfiguration eines jeden widerstandsfähigen Elementes ( 1 ) in jeder Ebene der beiden vorherrschenden Abmessungen symmetrisch im Verhältnis zu zwei rechtwinkligen Symmetrieachsen ist, von welchen eine die Richtung der von dem Leistungswerkzeug (5) auf die beiden sich gegenüberliegenden Segmente (3) übertragene Belastung bestimmt.
  12. Rahmenanordnung nach Patentanspruch 11, dadurch gekennzeichnet, dass eine der beiden rechtwinkligen Symmetrieachsen vertikal ist; wobei die vertikale Symmetrieachse jene ist, welche die Richtung der von dem Leistungswerkzeug (5) auf die beiden sich gegenüberliegenden Segmente (3) übertragene Belastung bestimmt.
  13. Rahmenanordnung nach Patentanspruch 12, dadurch gekennzeichnet, dass das genannte Leistungswerkzeug (5) einen unteren Körper (6) und einen oberen Körper (7) enthält, zwischen welche zu pressende Gegenstände oder Material eingesetzt werden; wobei ein Hydraulikkolben vorhanden ist, enthaltend eine Basis (8), an welcher sich eine Kammer (9) befindet, in welche Kammer (9) unter Druck stehende Flüssigkeit eingegeben wird; wobei die genannte Kammer (9) oben durch eine Blende (10) verschlossen ist, auf deren obere äusseren Oberfläche der gesamte untere Körper (6) drückt; wobei die genannte Basis (8) auf einer Fläche liegt, die durch die zweiten Abschnitte (31) der unteren Segmente (3) gebildet ist; und wobei der obere Körper (7) im Kontakt mit einer Oberfläche gehalten wird, gebildet durch die zweiten Abschnitte (31) der oberen Segmente (3).
EP98123386A 1998-12-09 1998-12-09 Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen Expired - Lifetime EP1008438B2 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98123386A EP1008438B2 (de) 1998-12-09 1998-12-09 Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen
DE1998629296 DE69829296T3 (de) 1998-12-09 1998-12-09 Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen
ES98123386T ES2236862T5 (es) 1998-12-09 1998-12-09 Estructura para prensas, en particular para moldear productos ceramicos.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98123386A EP1008438B2 (de) 1998-12-09 1998-12-09 Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen

Publications (3)

Publication Number Publication Date
EP1008438A1 EP1008438A1 (de) 2000-06-14
EP1008438B1 true EP1008438B1 (de) 2005-03-09
EP1008438B2 EP1008438B2 (de) 2009-11-25

Family

ID=8233110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123386A Expired - Lifetime EP1008438B2 (de) 1998-12-09 1998-12-09 Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen

Country Status (3)

Country Link
EP (1) EP1008438B2 (de)
DE (1) DE69829296T3 (de)
ES (1) ES2236862T5 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1441899B1 (de) 2001-11-06 2006-08-02 System S.p.A. Konstruktion für pressen, insbesondere zum formen von keramikprodukten
EP2527114B1 (de) * 2011-05-27 2015-10-28 Siempelkamp Maschinen- und Anlagenbau GmbH Kontinuierliche Presse und Verfahren zur Montage und zum Transport einer solchen Presse
WO2016042423A1 (en) * 2014-09-19 2016-03-24 Siti - B&T Group S.P.A. Press for large size products
CN108312607A (zh) * 2018-03-18 2018-07-24 董祥义 大型压机支撑结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB809361A (en) * 1954-01-15 1959-02-25 Fielding & Platt Ltd Improvements in or relating to hydraulic presses
US3064558A (en) † 1955-03-18 1962-11-20 Asea Ab Press stand
SE369869B (de) † 1967-04-14 1974-09-23 Asea Ab
BE756214A (fr) † 1969-09-16 1971-03-01 Radiator Ets Monture de presse
US4615208A (en) * 1984-03-02 1986-10-07 Hailey Robert W Hydraulic press frame
ES2111409T3 (es) * 1993-03-17 1998-03-01 Maris Algeri Medios de molde isostaticos.

Also Published As

Publication number Publication date
EP1008438A1 (de) 2000-06-14
ES2236862T3 (es) 2005-07-16
DE69829296T3 (de) 2010-05-12
DE69829296T2 (de) 2006-04-13
ES2236862T5 (es) 2010-03-05
DE69829296D1 (de) 2005-04-14
EP1008438B2 (de) 2009-11-25

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