EP1008438A1 - Châssis pour presses , en particulier pour presses utilisées dans la fabrication d'éléments en céramique - Google Patents

Châssis pour presses , en particulier pour presses utilisées dans la fabrication d'éléments en céramique Download PDF

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Publication number
EP1008438A1
EP1008438A1 EP98123386A EP98123386A EP1008438A1 EP 1008438 A1 EP1008438 A1 EP 1008438A1 EP 98123386 A EP98123386 A EP 98123386A EP 98123386 A EP98123386 A EP 98123386A EP 1008438 A1 EP1008438 A1 EP 1008438A1
Authority
EP
European Patent Office
Prior art keywords
segments
portions
opposite
power tool
edge
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
EP98123386A
Other languages
German (de)
English (en)
Other versions
EP1008438B2 (fr
EP1008438B1 (fr
Inventor
Franco Stefani
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.)
System SpA
Original Assignee
Ronflette SA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8233110&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1008438(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ronflette SA filed Critical Ronflette SA
Priority to ES98123386T priority Critical patent/ES2236862T5/es
Priority to EP98123386A priority patent/EP1008438B2/fr
Priority to DE1998629296 priority patent/DE69829296T3/de
Publication of EP1008438A1 publication Critical patent/EP1008438A1/fr
Application granted granted Critical
Publication of EP1008438B1 publication Critical patent/EP1008438B1/fr
Publication of EP1008438B2 publication Critical patent/EP1008438B2/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
    • B28B3/02—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)
EP98123386A 1998-12-09 1998-12-09 Châssis pour presses, en particulier pour presses utilisées dans la fabrication d'éléments en céramique Expired - Lifetime EP1008438B2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES98123386T ES2236862T5 (es) 1998-12-09 1998-12-09 Estructura para prensas, en particular para moldear productos ceramicos.
EP98123386A EP1008438B2 (fr) 1998-12-09 1998-12-09 Châssis pour presses, en particulier pour presses utilisées dans la fabrication d'éléments en céramique
DE1998629296 DE69829296T3 (de) 1998-12-09 1998-12-09 Rahmenanordnung in Pressen, insbesondere in Pressen für die Herstellung von Keramikgegenständen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98123386A EP1008438B2 (fr) 1998-12-09 1998-12-09 Châssis pour presses, en particulier pour presses utilisées dans la fabrication d'éléments en céramique

Publications (3)

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

Family

ID=8233110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123386A Expired - Lifetime EP1008438B2 (fr) 1998-12-09 1998-12-09 Châssis pour presses, en particulier pour presses utilisées dans la fabrication d'éléments en céramique

Country Status (3)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039846A1 (fr) * 2001-11-06 2003-05-15 System S.P.A. Structure pour presses, destinee notamment au formage de produits ceramiques
EP2527114A1 (fr) * 2011-05-27 2012-11-28 Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG Presse continue
WO2016042423A1 (fr) * 2014-09-19 2016-03-24 Siti - B&T Group S.P.A. Presse pour produits de grande taille
CN108312607A (zh) * 2018-03-18 2018-07-24 董祥义 大型压机支撑结构

Citations (3)

* 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
US4615208A (en) * 1984-03-02 1986-10-07 Hailey Robert W Hydraulic press frame
EP0736363A2 (fr) * 1993-03-17 1996-10-09 Maris Algeri Matrice, en particulier pour le pressage de carreaux en céramique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064558A (en) † 1955-03-18 1962-11-20 Asea Ab Press stand
SE369869B (fr) † 1967-04-14 1974-09-23 Asea Ab
BE756214A (fr) † 1969-09-16 1971-03-01 Radiator Ets Monture de presse

Patent Citations (3)

* 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
US4615208A (en) * 1984-03-02 1986-10-07 Hailey Robert W Hydraulic press frame
EP0736363A2 (fr) * 1993-03-17 1996-10-09 Maris Algeri Matrice, en particulier pour le pressage de carreaux en céramique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039846A1 (fr) * 2001-11-06 2003-05-15 System S.P.A. Structure pour presses, destinee notamment au formage de produits ceramiques
US7160092B2 (en) 2001-11-06 2007-01-09 System S.P.A. Structure for presses, inparticular for forming ceramic products
EP2527114A1 (fr) * 2011-05-27 2012-11-28 Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG Presse continue
WO2012163729A1 (fr) * 2011-05-27 2012-12-06 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Presse continue
WO2016042423A1 (fr) * 2014-09-19 2016-03-24 Siti - B&T Group S.P.A. Presse pour produits de grande taille
CN108312607A (zh) * 2018-03-18 2018-07-24 董祥义 大型压机支撑结构

Also Published As

Publication number Publication date
ES2236862T3 (es) 2005-07-16
DE69829296T3 (de) 2010-05-12
EP1008438B2 (fr) 2009-11-25
DE69829296T2 (de) 2006-04-13
EP1008438B1 (fr) 2005-03-09
ES2236862T5 (es) 2010-03-05
DE69829296D1 (de) 2005-04-14

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