EP1403018B1 - Procédé et dispositif pour fabriquer des moyens pour la fabrication de décoration en relief sur des carreaux en céramique - Google Patents

Procédé et dispositif pour fabriquer des moyens pour la fabrication de décoration en relief sur des carreaux en céramique Download PDF

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Publication number
EP1403018B1
EP1403018B1 EP03013430A EP03013430A EP1403018B1 EP 1403018 B1 EP1403018 B1 EP 1403018B1 EP 03013430 A EP03013430 A EP 03013430A EP 03013430 A EP03013430 A EP 03013430A EP 1403018 B1 EP1403018 B1 EP 1403018B1
Authority
EP
European Patent Office
Prior art keywords
plate
punch
die
manufacturing means
synthetic
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
EP03013430A
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German (de)
English (en)
Other versions
EP1403018A2 (fr
EP1403018A3 (fr
Inventor
Tosi Sergio
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.)
TOSI SpA
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Tosi SpA
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Publication date
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Publication of EP1403018A2 publication Critical patent/EP1403018A2/fr
Publication of EP1403018A3 publication Critical patent/EP1403018A3/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • B28B7/366—Replaceable lining plates for press mould
    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • B28B7/364—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article of plastic material or rubber

Definitions

  • the invention relates to manufacturing means for making decoration patterns on ceramic tiles.
  • the ceramic industry produces tiles having different decorative embossed patterns, for example drawings or geometrical figures, or tiles with particular surface roughness or other means for obtaining the desired aesthetic effect.
  • the embossed decorations are obtained on the tiles during press-forming, by a press die having a pattern to be reproduced in negative.
  • US-A-5 922 260 discloses a press die and method for making ceramic tiles.
  • the preparation of the production die is preceded by an experimental step which includes:
  • the production die can be prepared, otherwise, if the judgment is negative, the whole procedure is repeated, beginning from a new aluminum plate.
  • the aluminum plate is used to transfer the pattern impression to the production die, by a known technique called "heat gumming", which includes substantially applying layers of gummy material to the surface, which is intended to push against the tile.
  • Such layers are obviously complementary to embossment made on the aluminium plate.
  • the gum parts of the die wear out, therefore, they must be reconstructed at pre-set times, in order to maintain the tiles within the fixed quality standards.
  • the object of the present invention is to propose a method for manufacturing means for obtaining embossed decorations on ceramic tiles, by which test samples can be obtained in a rapid and cheap way, avoiding the drawbacks resulting from the use of the master machined in the aluminum plate.
  • Another object of the present invention is to manufacture the above means in such a way that they allow to start the production immediately after the final decoration has been obtained.
  • a further object of the present invention is to avoid gumming of the die, thus avoiding the subsequent drawbacks and costs.
  • a still further object of the present invention is to propose an apparatus, which carries out the proposed method, and which is simple to manufacture in relation to the obtained results.
  • the method being subject of the present invention proposes manufacturing of means for obtaining embossed decorations on ceramic tiles, indicated with reference numeral 1 in the above drawings.
  • the above means are obtained by a series of steps including a first proof-evaluation step, during which the final decoration pattern, to be embossed in the tiles later on, is obtained.
  • the first operation of the above mentioned first step includes machining the decoration pattern die M on a plate 3 of natural or synthetic material, for example gummy material, by using a laser beam controlled by a computer (not shown), in which the decoration pattern to be obtained is stored in digital form ( Figure 1 ).
  • the second operation is mounting (by removable fastening) the plate 3 on a punch 40 of a press 4, with the die M turned toward the upper surface 1a of a tile 1 situated below, onto which the punch 40 is intended to push.
  • the third operation is press-forming a series of sample tiles 1 and evaluating the obtained result.
  • the production starts immediately, using the plate 3 already mounted on the punch 40 as a die.
  • the plate is removed from the punch, the digital pattern stored in the electronic processor is modified and then, the first three operations described above are repeated, preferably on a new plate, until the desired result is obtained.
  • the punch 40 carries, fastened removably thereon, the plate 3 forming the die M of the final decoration, therefore it is possible to pass directly to the production without further operations.
  • the die M of the plate 3 mounted on the punch 40 is worn out and must be replaced.
  • a new die M is machined on another plate 3, using the same laser technique described previously.
  • the plate 3 can be applied on a metal foil; the so obtained a metal foil - plate group is extremely flexible and is applied onto the outer surface of a roller, in order to optimize the cutting of the plate 3 by laser beam, due to the rotation of the roller on its axis.
  • the metal foil - plate 3 group is fastened to a support of known type, which stabilizes the group (e.g. metallic support, net support, etc.).
  • the support is removably fastened to and centered with respect to the punch 40 by known systems, e.g. magnetic or mechanical.
  • the material of which the plate is made can be sensitive to ultraviolet radiation, in this way, the hardness of the plate can be adjusted in relation to the time of exposition to the radiation.
  • the proof-evaluation step for preparing the final decoration die is much quicker and cheaper, thus it saves time and costs necessary for cutting the aluminium sheet.
  • the laser technique for machining the sheet gummy material allows complicated patterns of high definition to be obtained without considerable cost increase.
  • Another advantage derives from the complete elimination of the die gumming operations, described previously and necessary with the currently used technique.
  • a further advantage results from the fact that the substitution of the gummy plate does not require the removal of the punch from the press and it is a rapid operation, which can be performed even by non-specialized operators.
  • the plate 3 machining operation can be obtained also by other techniques different from the one based on the use of a laser beam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Laser Beam Processing (AREA)
  • Printing Methods (AREA)
  • Finishing Walls (AREA)

Claims (14)

  1. Procédé de fabrication d'un moyen destiné à produire des motifs de décoration en relief sur des tuiles en céramique, caractérisé en ce qu'il comprend les étapes consistant à :
    - usiner une matrice (M), définissant un motif de décoration prédéterminé, sur une plaque (3) d'un matériau naturel ou synthétique, par un moyen commandé par ordinateur, dans lequel le motif de décoration à obtenir est stocké sous forme numérique ;
    - monter de manière amovible ladite plaque (3) sur un poinçon (40) d'une presse (4), la matrice (M) étant tournée vers la surface supérieure (la) d'une tuile en céramique (1) située en dessous, sur laquelle le poinçon (40) est amené à pousser ;
    - former à la presse des tuiles (1) par le poinçon avec ladite plaque ;
    - retirer ladite plaque (3), lorsqu'elle est usée, du poinçon (40), et la remplacer par une nouvelle, portant une matrice (M) définissant le même motif de décoration de la plaque précédente.
  2. Procédé selon la revendication 1, comprenant en outre les étapes consistant à :
    - former à la presse une série de tuiles échantillons (1) et évaluer le résultat obtenu ;
    - dans le cas d'un résultat insatisfaisant, retirer la plaque du poinçon, modifier le motif numérique stocké sur l'ordinateur, puis répéter les opérations mentionnées aux points ci-dessus jusqu'à ce que la plaque (3) avec le motif final soit définie.
  3. Procédé selon la revendication 2, caractérisé en ce que ledit moyen commandé par ordinateur comprend un faisceau laser.
  4. Procédé selon la revendication 1, caractérisé en ce que ledit usinage est obtenu par un faisceau laser.
  5. Procédé selon la revendication 1 ou 2, caractérisé en ce que ledit matériau synthétique ou naturel est à caractère de gomme.
  6. Procédé selon la revendication 1 ou 2, caractérisé en ce que ledit matériau synthétique ou naturel est sensible à un rayonnement ultraviolet et sa dureté est fonction de la durée d'exposition audit rayonnement.
  7. Procédé selon la revendication 1 ou 2, caractérisé en ce que ladite plaque (3) est appliquée sur une feuille métallique.
  8. Procédé selon la revendication 7, caractérisé en ce que le groupe formé par la feuille métallique et la plaque (3) est fixé à un support, qui est fixé de manière amovible à celui-ci, et centré par rapport audit poinçon (40).
  9. Moyen de fabrication destiné à produire des motifs de décoration en relief sur des tuiles en céramique, comprenant une presse (4) avec un poinçon (40), caractérisé en ce que ledit moyen de fabrication comprend une plaque (3), d'un matériau synthétique ou naturel, avec une matrice (M) usinée dedans et définissant un motif de décoration prédéterminé, ladite plaque (3) étant apte à être montée de manière amovible sur la partie inférieure dudit poinçon (40), de sorte que la matrice (M) est tournée vers la surface supérieure (la) d'une tuile (1) située en dessous.
  10. Moyen de fabrication selon la revendication 9, caractérisé en ce que ledit usinage est propre à être obtenu par un faisceau laser.
  11. Moyen de fabrication selon la revendication 10, caractérisé en ce que ladite plaque (3) est apte à être appliquée sur une feuille métallique.
  12. Moyen de fabrication selon la revendication 11, caractérisé en ce que le groupe formé par ladite feuille métallique et ladite plaque est apte à être fixé à un support, qui est fixé de manière amovible, et centré par rapport audit poinçon (40).
  13. Moyen de fabrication selon la revendication 10, caractérisé en ce que ledit matériau synthétique ou naturel est sensible à un rayonnement ultraviolet et sa dureté est fonction de la durée d'exposition audit rayonnement.
  14. Moyen de fabrication selon la revendication 9, caractérisé en ce que ledit matériau synthétique ou naturel est du type collant.
EP03013430A 2002-06-24 2003-06-23 Procédé et dispositif pour fabriquer des moyens pour la fabrication de décoration en relief sur des carreaux en céramique Expired - Lifetime EP1403018B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20020402 2002-06-24
IT2002BO000402A ITBO20020402A1 (it) 2002-06-24 2002-06-24 Metodo per la realizzazione di decori in rilievo su piastrelle ceramiche ed apparecchiatura che attua tale metodo

Publications (3)

Publication Number Publication Date
EP1403018A2 EP1403018A2 (fr) 2004-03-31
EP1403018A3 EP1403018A3 (fr) 2005-07-20
EP1403018B1 true EP1403018B1 (fr) 2008-05-28

Family

ID=11440248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03013430A Expired - Lifetime EP1403018B1 (fr) 2002-06-24 2003-06-23 Procédé et dispositif pour fabriquer des moyens pour la fabrication de décoration en relief sur des carreaux en céramique

Country Status (5)

Country Link
EP (1) EP1403018B1 (fr)
AT (1) ATE396854T1 (fr)
DE (1) DE60321284D1 (fr)
ES (1) ES2307854T3 (fr)
IT (1) ITBO20020402A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2261004B1 (es) * 2004-05-11 2007-11-16 Abissal Invest, S.L. Procedimiento y sistema para la fabricacion de baldosas ceramicas mediante la aplicacion y deteccion de marcas visisbles.
ITBO20040579A1 (it) * 2004-09-21 2004-12-21 Serigrafica Tosi S R L Metodo per la realizzazione di decori in rilievo su piastrelle ceramiche

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5922260A (en) * 1995-03-22 1999-07-13 Rossi; Pellegrino Method of making die set for forming ceramic tiles
IT1310821B1 (it) * 1999-09-08 2002-02-22 Sergio Tosi Metodo per realizzare matrici utilizzabili per effettuare ladecorazione di piastrelle ceramiche.

Also Published As

Publication number Publication date
ITBO20020402A0 (it) 2002-06-24
EP1403018A2 (fr) 2004-03-31
ES2307854T3 (es) 2008-12-01
DE60321284D1 (de) 2008-07-10
EP1403018A3 (fr) 2005-07-20
ATE396854T1 (de) 2008-06-15
ITBO20020402A1 (it) 2003-12-24

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