EP1541308A2 - Procédé de fabrication de carreaux avec des veines semblables à celles de pierres naturelles, et installation pour sa mise en oeuvre - Google Patents

Procédé de fabrication de carreaux avec des veines semblables à celles de pierres naturelles, et installation pour sa mise en oeuvre Download PDF

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Publication number
EP1541308A2
EP1541308A2 EP04078185A EP04078185A EP1541308A2 EP 1541308 A2 EP1541308 A2 EP 1541308A2 EP 04078185 A EP04078185 A EP 04078185A EP 04078185 A EP04078185 A EP 04078185A EP 1541308 A2 EP1541308 A2 EP 1541308A2
Authority
EP
European Patent Office
Prior art keywords
mass
recess
plant according
layer
troughs
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Withdrawn
Application number
EP04078185A
Other languages
German (de)
English (en)
Other versions
EP1541308A3 (fr
Inventor
Daniele Lamberti
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.)
Tecnografica Sistemi Welko SpA
Original Assignee
Tecnografica Sistemi Welko 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 Tecnografica Sistemi Welko SpA filed Critical Tecnografica Sistemi Welko SpA
Publication of EP1541308A2 publication Critical patent/EP1541308A2/fr
Publication of EP1541308A3 publication Critical patent/EP1541308A3/fr
Withdrawn legal-status Critical Current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
    • B28B3/021—Ram heads of special form
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0205—Feeding the unshaped material to moulds or apparatus for producing shaped articles supplied to the moulding device in form of a coherent mass of material, e.g. a lump or an already partially preshaped tablet, pastil or the like
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/022—Feeding several successive layers, optionally of different materials
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
    • 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
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material

Definitions

  • the present invention refers to the manufacture of ceramic tiles coloured with the mass-colouration system, which foresees subjecting a polychromatic mass of atomised powders to pressing and subsequent cooking according to a technique now known to all men skilled in the art.
  • the problem encountered by the man skilled in the art is that of obtaining a distribution of the monochromatic portions and of the relative interfaces with the adjacent portions, such as to imitate the appearance of natural stones, like marble.
  • the polychromatic mass to be pressed can be prepared inside a drawer for loading the powder in the recess of the mould, or even directly in the recess of the mould.
  • the finding sets itself the purpose of creating a polychromatic surface layer of powders, consisting of monochromatic portions suitably distributed and mixed just near to the respective interfaces, in said forming recess of a ceramic mould.
  • the purpose of the finding is achieved, in a totally general way, by arranging at least two monochromatic layers of different coloured powder one on top of the other and subjecting the top layer to a differentiated pressing action suitable for creating troughs at least as deep as the thickness of said top layer.
  • Said differentiated pressing action can, for example, be carried out by an impression punch, or rather equipped with a generally irregular active surface, like a piece in low relief.
  • Said troughs can be filled, in whole or in part, with powder of one or more colours, or left as they are.
  • the two or more layers thus treated are either created directly in the recess of the mould, or created outside of the recess itself and then transferred into it without substantial modifications in their structure.
  • FIG. 1 is an elevated schematic section view that shows the finding in one particular operating position.
  • FIG. 2 is a view totally similar to the previous one, in a subsequent operating step.
  • FIG. 3 is a view totally similar to the previous one, in a further operating step.
  • Said drawer 7 is closed at the bottom by a stationary horizontal slab 77 that is arranged level with the upper face of the matrix of said mould, the latter installed on a ceramic press, said mould and said press not having been shown for the sake of simplicity.
  • the three layers are of uniform thickness, where the lower or base layer 6 is quite thick, whereas the upper layers 5 and 4 are relatively thin.
  • the depositing of the layers 6, 5 and 4 takes place as stated with known means, like loaders comprising a hopper with alternative horizontal motion equipped with a long and narrow discharge mouth that is intercepted by a flow adjustment valve.
  • Said means 1 can, for example, consist of an electric or hydraulic actuator (see FIG. 2).
  • a punch 3 the lower face of which has the negative of the shape that one wishes to give to the upper face of the stratified mass of powder arranged in the drawer 7, is removably fixed under the dish 2.
  • the punch 3 has a low relief comprising a plurality of identical equally spaced ribbings that therefore have an overall regular serrated shape in section.
  • the actuator 1 inserts the punch 3 in the recess of the drawer 7.
  • Said insertion is at least equal to the part of thickness of the punch 3 touched by the low relief, see FIG. 2.
  • the pressing action of the punch 3 involves the hammering of the projecting portions of the low relief into the upper coloured layers 5 and 4, and a simultaneous displacement of the powders both vertically and horizontally.
  • said displacements involve the local troughing of a part of the upper coloured powder 4 and the lower coloured powder, and the simultaneous local lifting of a part of the lower coloured powder 5, and the upper coloured powder (FIG. 2).
  • the stratified mass thus conditioned, or rather compacted in part and decorated on the surface can be transferred as such, through known systems suitable for keeping the obtained structure practically intact, into the forming recess of a ceramic mould.
  • the decoration thus obtained can be modified or improved according to the desired ornamental characteristics.
  • a further layer of another one or more coloured powdered material can be applied onto at least a part of the upper face of the compacted mass.
  • the covering of at least a part may be complete, or else it may involve practically just its troughs.
  • Said covering can, for example, be carried out through a dosing group like a net or another equivalent system.
  • this method can be carried out not only in a shape or matrix like the loading drawer 7, associated with a service trolley of a press as given as an example above, but also directly in the forming recess of the ceramic mould carried by said press.
  • the method according to the finding can be carried out using just two layers of coloured powder, the lower one of which is preferably very thick, and the upper one of which is preferably relatively very thin.
  • an idle roller coated with an elastomeric layer equipped with ridges or ribs of various shapes intended to be rested on the upper face of the drawer 7, or of the matrix of a ceramic mould, and made to roll on itself to compress and recess the underlying mass in the ways specified previously.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
EP04078185A 2003-12-11 2004-11-23 Procédé de fabrication de carreaux avec des veines semblables à celles de pierres naturelles, et installation pour sa mise en oeuvre Withdrawn EP1541308A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE20030116 ITRE20030116A1 (it) 2003-12-11 2003-12-11 Metodo per la fabbricazione di piastrelle dotate di
ITRE20030116 2003-12-11

Publications (2)

Publication Number Publication Date
EP1541308A2 true EP1541308A2 (fr) 2005-06-15
EP1541308A3 EP1541308A3 (fr) 2006-05-24

Family

ID=34509499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04078185A Withdrawn EP1541308A3 (fr) 2003-12-11 2004-11-23 Procédé de fabrication de carreaux avec des veines semblables à celles de pierres naturelles, et installation pour sa mise en oeuvre

Country Status (2)

Country Link
EP (1) EP1541308A3 (fr)
IT (1) ITRE20030116A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2163366A1 (fr) * 2008-09-15 2010-03-17 Siti-B & T Group S.p.a. Procédé d'obtention de cavités sur les surfaces d'éléments en céramique et appareil de fabrication d'éléments en céramique doté d'au moins une surface fournie avec des cavités
RU2385221C2 (ru) * 2008-03-11 2010-03-27 Николай Николаевич Леухин Способ производства цветного кирпича и устройство для его получения

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484514A (en) * 1965-11-30 1969-12-16 Enrico Longinotti Process for molding decorative cement slabs
IT1294941B1 (it) * 1997-08-01 1999-04-23 Ariostea S P A Sistema di caricamento degli stampi delle presse per la formatura di piastrelle e relativi mezzi di attuazione.
EP0927687B1 (fr) * 1997-12-23 2004-05-26 Maris Algeri Procédé et dispositif pour transférer un matériau granuleux

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2385221C2 (ru) * 2008-03-11 2010-03-27 Николай Николаевич Леухин Способ производства цветного кирпича и устройство для его получения
EP2163366A1 (fr) * 2008-09-15 2010-03-17 Siti-B & T Group S.p.a. Procédé d'obtention de cavités sur les surfaces d'éléments en céramique et appareil de fabrication d'éléments en céramique doté d'au moins une surface fournie avec des cavités
CN101708627A (zh) * 2008-09-15 2010-05-19 Siti-B&T集团股份公司 用于在陶瓷产品的表面上获得凹槽的方法及设备

Also Published As

Publication number Publication date
ITRE20030116A1 (it) 2005-06-12
EP1541308A3 (fr) 2006-05-24

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