EP3802094B1 - Maschine zur herstellung von keramischen gegenständen - Google Patents

Maschine zur herstellung von keramischen gegenständen Download PDF

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Publication number
EP3802094B1
EP3802094B1 EP19732129.2A EP19732129A EP3802094B1 EP 3802094 B1 EP3802094 B1 EP 3802094B1 EP 19732129 A EP19732129 A EP 19732129A EP 3802094 B1 EP3802094 B1 EP 3802094B1
Authority
EP
European Patent Office
Prior art keywords
bearing structure
stiffening
elements
machine
stiffening elements
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.)
Withdrawn - After Issue
Application number
EP19732129.2A
Other languages
English (en)
French (fr)
Other versions
EP3802094A1 (de
Inventor
Alessandro Bianchini
Francesco Scaramuzzi
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.)
Siti B&T Group SpA
Original Assignee
Siti B&T Group SpA
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 Siti B&T Group SpA filed Critical Siti B&T Group SpA
Publication of EP3802094A1 publication Critical patent/EP3802094A1/de
Application granted granted Critical
Publication of EP3802094B1 publication Critical patent/EP3802094B1/de
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 present invention relates to a machine for forming ceramic articles.
  • presses machines for forming ceramic articles, in jargon called "presses" are used for compacting ceramic powders so as to form a ceramic article to be subsequently fired.
  • Known types of forming machines generally comprise a bearing structure that can be positioned on the ground, which supports relative forming means.
  • Forming means have a supporting surface of the material to be formed, generally defined by a mold, and a mobile pressing element that moves towards/away from the supporting surface and is adapted to exert a predefined pressure on the material to be formed.
  • the presses can be of different "tonnage" depending on the force which the pressing element is able to exert on the material to be pressed.
  • the bearing structure is generally made up of a central core to which steel sheets are integrated, on which openings are defined to allow the movement of the pressing element and access to the supporting surface.
  • the constraint in the sizing of the bearing structure is to date defined by the constructive limit in the realization of the relative sheets, which cannot exceed a certain thickness.
  • US 5027638 and US 4615208 disclose machines for forming articles comprising a bearing structure which is formed by a plurality of elements mechanically connected to each other so as to allow an easy assembly of the whole machine.
  • the document US4615208 A also discloses a machine in accordance with the preamble of claim 1.
  • the main aim of the present invention is to provide a machine for forming ceramic articles which permits varying the rigidity of the relative bearing structure according to needs.
  • one object of the present invention is to make a machine for forming ceramic articles which is characterized by higher tonnages than those of the machines on the market today.
  • Another object of the present invention is to make machines for forming ceramic articles characterized by a high tonnage and which at the same time can be easily transported without the use of exceptional transport means.
  • Another object of the present invention is to simplify commissioning compared to the machines for forming ceramic articles on the market today, with particular reference to those of higher tonnage.
  • Another object of the present invention is to devise a machine for forming ceramic articles that allows overcoming the mentioned drawbacks of the prior art in the context of a simple, rational, easy, effective to use and low cost solution.
  • reference numeral 1 globally indicates a machine for forming ceramic articles.
  • the machine 1 comprises a bearing structure 2 intended, in use, to be positioned on the ground and forming means 3 associated with the bearing structure 2.
  • the forming means 3 are provided with at least one supporting surface 4 intended to support the material to be formed and with at least one pressing element 5 which is movable close to/away from the supporting surface 4.
  • the supporting surface 4 is intended to support a mold adapted to contain the ceramic material to be pressed and the pressing element 5 consists of the mobile part of a fluid-operated cylinder 6 the body of which is associated integral with the bearing structure 2.
  • the bearing structure 2 has a pair of lateral faces 2a arranged transversely to the supporting surface 4 and mutually opposite.
  • the bearing structure 2 has at least one access opening 7 to the supporting surface 4 which faces at least one of the lateral faces 2a.
  • the access opening 7 is of the pass-through type. More in detail, the cylinder 6 is housed inside the access opening 7.
  • the machine 1 comprises stiffening means 8 associated in a removable manner with the bearing structure 2.
  • the stiffening means 8 comprise at least one stiffening element 9 associated in a removable manner with at least one of the lateral faces 2a.
  • the stiffening means 8 comprise at least one pair of stiffening elements 9, each of which is associated in a removable manner with a relative lateral face 2a.
  • the stiffening means 8 can therefore comprise a plurality of pairs of stiffening elements 9, where each of these pairs comprises a stiffening element 9 associated with a lateral face 2a and the other stiffening element 9 associated with the opposite lateral face 2a. This way the bearing structure 2 keeps its symmetry with respect to a vertical median plane.
  • the stiffening elements 9 of each of the aforementioned pairs have the same thickness, the thicknesses of the different pairs of stiffening elements 9 can be different to each other.
  • the stiffening elements 9 have a substantially plate-like conformation, by this definition meaning that the dimensions of length and width are bigger than thickness.
  • each stiffening element 9 has two substantially flat (i.e. except for machining tolerances) coupling surfaces 9a. Therefore, the stiffening elements 9 directly in contact with the bearing structure 2 have a coupling surface 9a which is turned towards the relative lateral face 2a while the other coupling surface 9a is turned outwards.
  • the coupling surfaces 9a of any other stiffening elements 9 are instead facing the coupling surfaces 9a of the adjacent stiffening elements 9.
  • the stiffening means 8 comprise one or more first spacer elements 15 interposed between the bearing structure 2 and the stiffening elements 9 adjacent to it. The first spacer elements 15 are therefore adapted to prevent the lateral faces 2a from directly contacting the coupling surfaces 9a.
  • At least one of the bearing structure 2 and the stiffening elements 9 comprises a first seat 16 for housing the first spacer elements 15.
  • both the bearing structure 2 and the stiffening elements 9 adjacent to it comprise relative first seats 16, respectively defined at the lateral faces 2a and at the coupling surfaces 9a facing these, adapted to receive the first spacer elements 15 interposed between them.
  • the stiffening means 8 comprise second spacer elements (not shown in the figures) interposed between two stiffening elements 9 adjacent to each other.
  • at least one of the stiffening elements 9 adjacent to each other comprises a second seat 17 for housing the second spacer elements, which is defined at the relative coupling surface 9a.
  • the stiffening elements 9 comprise at least one through opening 10 which faces the access opening 7 of the bearing structure.
  • the through opening 10 defined on the stiffening elements has substantially the same edge as the access opening 7.
  • the through opening 10 defines a lower edge 10b, mechanically connectable to the bearing structure 2, and an upper edge 10a, which rests, in use, on top of the body of the cylinder 6.
  • the stiffening means 8 also comprise fixing means 11 of the stiffening elements 9 to the bearing structure 2.
  • the fixing means 11 comprise one or more first threaded elements 12 which connect the stiffening elements 9 together which are associated with the opposite lateral faces 2a, passing through the bearing structure 2, and tightening means 13 of these first threaded elements 12.
  • first through holes 14 which are aligned to each other following the positioning of the stiffening elements themselves, inside which the first threaded elements 12 are inserted.
  • the first spacer elements 15 also have a relative hole adapted to be fitted over the first threaded elements 12.
  • the first threaded elements 12 and the tightening means 13 are, e.g., of the type of pins and ring nuts respectively, suitably sized according to the thickness of the stiffening elements 9 and the stresses which they have to undergo.
  • the fixing means 11 comprise second threaded elements 18 connecting the bearing structure 2 to the lower edge 10b of each stiffening element 9, on which relative second holes 19 are defined.
  • the bearing structure 2 is supplied and positioned resting on the ground, if necessary through the creation of special foundations.
  • stiffening elements 9 are provided, e.g., a pair as in the embodiment shown in the illustrations, and these stiffening elements 9 are applied to the bearing structure 2 at its lateral faces 2a.
  • first threaded elements 12 are inserted inside the first holes 14 formed on the bearing structure 2, after which the first spacer elements 15 are applied so as to insert them inside the first seats 16 formed on the lateral faces 2a and then the stiffening elements 9 are fitted by inserting the first threaded elements 12 inside the relative first holes 14.
  • the stiffening elements 9 are first of all secured to the bearing structure 2 by means of the second threaded elements 18 and then the tightening means 13 are fitted, so that the stiffening elements 9, the first spacer elements 15 and the bearing structure 2 are tightened together.
  • each stiffening element 9 is fixed to the bearing structure 2 by means of the second threaded elements 18 and then the tightening means 13 are fitted so as to define a single body.
  • the modularity of the machine to which the present invention relates also considerably facilitates commissioning operations compared to machines of known type, because it allows limiting the overall dimensions and weights of the individual elements, thus also simplifying transport operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Claims (7)

  1. Maschine (1) zum Formen von keramischen Gegenständen, umfassend:
    - eine Tragstruktur (2), die dazu bestimmt ist, auf dem Boden positioniert zu werden;
    - Formgebungsmittel (3), die der Tragstruktur (2) zugeordnet sind, die mit mindestens einer Stützfläche (4), die dazu bestimmt ist, das zu formende Material zu stützen, und mit mindestens einem Presselement (5) versehen sind, das auf die Stützfläche (4) zu/ von ihr weg bewegbar ist, wobei das Presselement (5) aus dem beweglichen Teil eines fluidbetriebenen Zylinders (6) besteht, dessen Körper der Tragstruktur (2) einstückig zugeordnet ist,
    - Versteifungsmitteln (8), die in lösbarer Weise der Tragstruktur (2) zugeordnet sind,
    wobei die Tragstruktur (2) ein Paar Seitenflächen (2a) aufweist, die quer zu der Stützfläche (4) und einander gegenüberliegend angeordnet sind, und mindestens eine Zugangsöffnung (7) zu der Stützfläche selbst aufweist, die mindestens einer der Seitenflächen (2a) zugewandt ist, und wobei die Versteifungsmittel (8) mindestens ein Paar Versteifungselemente (9) umfassen, von denen jedes an mindestens einer der Seitenflächen (2a) mit der Tragstruktur (2) in lösbarer Weise verbunden und dieser zugeordnet ist und Mittel (11) zur Befestigung der Versteifungselemente (9) an der Tragstruktur (2) umfassen, wobei die Befestigungsmittel (11) ein oder mehrere erste Gewindeelemente (12), welche die Versteifungselemente (9), die den gegenüberliegenden Seitenflächen (2a) zugeordnet sind, miteinander verbinden, und durch die Tragstruktur (2) verlaufen, und Mittel (13) zum Festziehen der Gewindeelemente (12) umfassen, und wobei die Tragstruktur (2) und die Versteifungselemente (9) ein oder mehrere erste Durchgangslöcher (14) zum Einführen der ersten Gewindeelemente (12) umfassen,
    dadurch gekennzeichnet, dass die Versteifungselemente (9) mindestens eine Durchgangsöffnung (10) aufweisen, die der Zugangsöffnung (7) zugewandt ist, und wobei die Durchgangsöffnung (10) mindestens eine obere Kante (10a), die während des Gebrauchs oben auf dem Körper des Zylinders (6) ruht, und mindestens eine untere Kante (1 0b) definiert, die mechanisch mit der Tragstruktur (2) verbindbar ist, und dadurch, dass sie zweite Gewindeelemente (18) aufweisen, welche die Tragstruktur (2) mit der unteren Kante (10b) jedes der Versteifungselemente (9) verbinden, wobei die untere Kante (10b) ein oder mehrere zweite Löcher (19) zum Einführen der zweiten Gewindeelemente (18) umfasst.
  2. Maschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Versteifungsmittel (8) mindestens ein erstes Abstandselement (15) umfassen, das zwischen der Tragstruktur (2) und jedem Versteifungselement (9) angeordnet ist.
  3. Maschine (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Versteifungsmittel (8) mindestens ein zweites Abstandselement umfassen, das zwischen zwei nebeneinander angeordneten Versteifungselementen (9) angeordnet ist.
  4. Maschine (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Versteifungselemente (9) eine im Wesentlichen plattenartige Form haben, wobei jedes der Versteifungselemente (9) zwei einander gegenüberliegende Kopplungsflächen (9a) aufweist.
  5. Maschine (1) nach Anspruch 4, dadurch gekennzeichnet, dass mindestens die Seitenfläche (2a) der Tragstruktur (2) oder die ihr gegenüberliegende Kopplungsfläche (9a) eines entsprechenden Versteifungselements (9) mindestens einen ersten Sitz (16) zur Aufnahme des ersten Abstandselements (15) aufweist.
  6. Maschine (1) nach den Ansprüchen 3 und 5, dadurch gekennzeichnet, dass mindestens eine der einander zugewandten Kopplungsflächen (9a) zweier nebeneinander angeordneter Versteifungselemente (9) mindestens einen zweiten Sitz (17) zur Aufnahme des zweiten Abstandselements aufweist.
  7. Maschine (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Versteifungselemente (9) von jedem der Paare im Wesentlichen die gleiche Dicke aufweisen.
EP19732129.2A 2018-05-25 2019-05-23 Maschine zur herstellung von keramischen gegenständen Withdrawn - After Issue EP3802094B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000005716A IT201800005716A1 (it) 2018-05-25 2018-05-25 Macchina per la formatura di manufatti ceramici
PCT/IB2019/054266 WO2019224759A1 (en) 2018-05-25 2019-05-23 Machine for forming ceramic articles

Publications (2)

Publication Number Publication Date
EP3802094A1 EP3802094A1 (de) 2021-04-14
EP3802094B1 true EP3802094B1 (de) 2024-04-10

Family

ID=63312307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19732129.2A Withdrawn - After Issue EP3802094B1 (de) 2018-05-25 2019-05-23 Maschine zur herstellung von keramischen gegenständen

Country Status (4)

Country Link
EP (1) EP3802094B1 (de)
BR (1) BR112020024070A2 (de)
IT (1) IT201800005716A1 (de)
WO (1) WO2019224759A1 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR345819A (fr) * 1904-07-12 1904-12-17 Carl Huber Mode de construction des cadres des presses hydrauliques
NL43360C (de) * 1927-06-21
US4615208A (en) * 1984-03-02 1986-10-07 Hailey Robert W Hydraulic press frame
IT1196506B (it) * 1986-07-16 1988-11-16 Nassetti Ettore Spa Incastellatura perfezionata per presa,in particolare per lo stampaggio di materiali ceramici
US5027638A (en) * 1990-06-22 1991-07-02 Friestad Roland W Force-resisting structure
IT1402937B1 (it) * 2010-10-28 2013-09-27 System Spa Struttura per presse in particolare per la formatura di prodotti ceramici.
CN107848236B (zh) * 2014-09-19 2019-11-19 斯蒂-B及T集团股份公司 用于压制设备的非焊接结构以及用于组装该结构的方法

Also Published As

Publication number Publication date
IT201800005716A1 (it) 2019-11-25
BR112020024070A2 (pt) 2021-02-09
EP3802094A1 (de) 2021-04-14
WO2019224759A1 (en) 2019-11-28

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