EP1270160A1 - Méthode et dispositif pour la manufacture d'objets en céramique décorée en forme de plaque - Google Patents

Méthode et dispositif pour la manufacture d'objets en céramique décorée en forme de plaque Download PDF

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Publication number
EP1270160A1
EP1270160A1 EP02013904A EP02013904A EP1270160A1 EP 1270160 A1 EP1270160 A1 EP 1270160A1 EP 02013904 A EP02013904 A EP 02013904A EP 02013904 A EP02013904 A EP 02013904A EP 1270160 A1 EP1270160 A1 EP 1270160A1
Authority
EP
European Patent Office
Prior art keywords
articles
shaping
article
mould
seat
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Withdrawn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
EP02013904A
Other languages
German (de)
English (en)
Inventor
Stefano Caroni
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.)
Kestro International Ltd
Original Assignee
Kestro International Ltd
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 Kestro International Ltd filed Critical Kestro International Ltd
Publication of EP1270160A1 publication Critical patent/EP1270160A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • 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
    • B28B3/04—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 with one ram per mould
    • B28B3/06—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 with one ram per mould with two or more ram and mould sets

Definitions

  • the present invention relates to a method of and apparatus for producing decorated plate-like ceramic articles.
  • the ceramic industry is constantly seeking articles which are suitable for attracting market attention and keeping production costs at low levels, while having high-value organoleptic features.
  • One of the main features to be reproduced in a reproduction of a natural stony material is constituted by the veins of the natural material, veins that also extend without solution of continuity to the innermost portions of the material.
  • the manufactured articles should also have a rough appearance, as if they had been manually obtained by skilled stonecutters while working natural materials.
  • Such articles are manufactured, e.g. by using a pre-shaped pad, usually made of high-strength plastics material, which constitutes a negative reproduction of the appearance of a natural stone and is inserted in a respective die in a mould on a forming press, thus giving their negative shape to a material to be shaped loaded into the die of the mould, which then takes a corresponding positive shape.
  • a pre-shaped pad usually made of high-strength plastics material, which constitutes a negative reproduction of the appearance of a natural stone and is inserted in a respective die in a mould on a forming press, thus giving their negative shape to a material to be shaped loaded into the die of the mould, which then takes a corresponding positive shape.
  • Such a method makes also possible to vary the thickness of the various batches of material to be shaped, possibly by providing a bed of low-value material designed to become the laying face of the manufactured articles on which, through one or more successive loading operations, one or more layers of materials designed to constitute the faces in
  • the main object of the present invention is to provide a method of and an apparatus for manufacturing plate-like ceramic articles with decorations extending throughout their thickness which allows ceramic articles having all the characteristic features of those directly obtained from natural materials to be obtained.
  • Another object of the present invention is to provide a method and an apparatus for manufacturing plate-like ceramic articles with decorations extending throughout their thickness which makes it possible to produce plate-like ceramic articles of any size and thickness on a mass production scale.
  • a method of manufacturing plate-like ceramic articles comprising the steps of: delivering, according to a predetermined sequence, calibrated doses of powdery/atomized material from a storage, supplying, according to a predetermined sequence, said calibrated doses into at least one shaping mould arranged to form an article by compacting powdered/atomized material fed to at least one seat in said shaping mould, removing each shaped article from its respective seat, transferring it to a pressing station, and pressing the shaped article for causing its permanent stabilization.
  • an apparatus for manufacturing plate-like ceramic articles which comprises a storage for storing powdery/atomized materials and delivering metered quantities thereof, at least one shaping mould having at least one shaping seat arranged downstream of said storage for receiving metered quantities of powdered/atomized material to be shaped by being die-pressed therein, at least one press located downstream of the or each shaping unit, and withdrawing means located at said shaping unit and designed to withdraw shaped articles therefrom and to transfer them to a respective press for permanent stabilization of said articles.
  • reference numeral 1 generally indicates an apparatus for manufacturing plate-like ceramic articles M.
  • the apparatus 1 comprises a storage system 2 for storing materials in powdery or atomized form and delivering them in calibrated amounts.
  • a storage system 2 for storing materials in powdery or atomized form and delivering them in calibrated amounts.
  • Such a storing system comprises a plurality of modular units 3, which are arranged in parallel one with respect to the other and adapted to shape articles M by compaction.
  • Each modular unit 3 has at least one shallow shaping seat or gap 4 and is connected downstream of a conveying means 5 arranged to convey compacted articles to a press 6 for final stabilization of the compacted articles M.
  • each modular unit 3 comprises a box-like frame 7 having an inlet opening 8 for loading therein component materials at the top thereof and an outlet opening 9 for unloading or releasing formed articles at the bottom.
  • Two pairs of mould and counter-mould 10 -110 and 11 - 111, respectively, are slidably mounted in each box-like frame 7, so that they can be moved close to, and spaced apart from, one another in a horizontal direction.
  • a narrow gap or shallow seat 4, 104, respectively, is delimited between each pair of mould and counter mould and the inner walls of the box-like frame 7.
  • pairs of loading openings 8 and respective unloading openings 9 lie on mutually staggered vertical planes that are symmetrically arranged with respect to an intermediate vertical plane P.
  • the openings 9 for unloading formed articles M are in vertical alignement with a respective conveyor 5.
  • Each mould 10, 110 can be actuated by a respective actuators 12, 112 so as to be displaced inside the box-like frame 7, e.g. while sliding on a pair of guiding rods 7a, with respect to, and synchronously with, its counter-mould 11, 111 actuated by respective actuators 12', 112' so as to be moved between a first position at which its shaping seat or gap 4, 104 is in vertical alignement with a respective loading opening 8 and a second position where its shaping seat or gap 4 is in vertical alignment with its respective unloading opening 9 for a shaped or formed article M.
  • actuators 12, 112 and 12', 112' are controlled by a program control unit CU.
  • Each loading opening 8 is arranged downstream of a respective small hopper 13 arranged to receive powder material supplied by the storage system 2.
  • each box-like frame 7 locates two pairs of moulds 10, 110 and counter-moulds 11, 111 and the same are alternately actuated, whereas displacements between the first and second position occur synchronously and in opposite directions, thus each pair of moulds is supplied with powder material via its loading opening 8 and releases a shaped article M through its unloading opening 9.
  • each pair of moulds 10, 110 and counter moulds 11, 111 can be positioned at alternating cycles, so that one pair is aligned with its respective loading opening 8 and the other with its unloading opening 9.
  • the feeding storage system 2 comprises modular silos 14 designed to store strictly monochrome powdery or atomized materials. Outlets 15 open onto a conveyor 16 for conveying calibrated doses of monochrome materials from the silos 14 to a mixing unit 116 from which the same materials are supplied to containers 17 as multi-colour mixed materials.
  • the conveying means 5 for conveying articles M comprises a pair of first conveyors 18 with facing work runs 19, between which a gap 20 is delimited which has a substantially constant width that in any case is smaller than the thickness of each formed article M.
  • Articles M are conveyed while being engaged between the work runs 19.
  • the first conveyors 18 have inlet fronts 18a substantially in vertical alignement with a respective unloading openings 9, and outlet fronts 21 are arranged facing, with no substantial discontinuities, adjacent inlet fronts 22 of second conveyors 23 to the presser means 6.
  • the conveying means 5 is vertically arranged and the second conveyors 23 extend horizontally.
  • intermediate portions or sections 24 of pairs of facing connecting conveyors 25 are provided which can be angularly displaced by means of any suitable actuating means AM, such as a jack or a pinion and rack arrangement controlled by a detecting means, e.g. a respective photocells PC, onto vertical planes by pivoting about horizontal axes from a position in which they are in alignement with the pairs of first conveyors 18 to a position in which they are aligned with second conveyors 23.
  • At least one station 26 for decorating the exposed faces of the formed articles M can be provided in the apparatus 1 at a location between said conveying means 5 and the press 6.
  • a station 27 for cutting the formed articles M into sections with predetermined dimensions can be arranged upstream of the press 6.
  • Apparatus 1 is controlled by program control unit CU, whereby predetermined doses of such materials are withdrawn from silos 14 and unloaded through outlets 15 onto the conveyor 16 that delivers them to mixing unit 116 to form multicoloured mixtures to be supplied to containers 17 and then to batteries of modular units 3 where pairs of moulds 10, 110 and counter-moulds 11, 111 are arranged to press and shape the metered material fed to them to obtain articles M.
  • the first pair of mould 10 and counter mould 11 is so arranged inside the box-like frame 7 that its gap 4 is vertically aligned with the loading opening 8 underneath hopper 13.
  • the second pair of mould 110 and counter-mould 111 is caused to slide on the rods 7a until its gap or seat 104 becomes vertically aligned with its respective unloading port 9.
  • gap or seat 4 delimited by the pair of mould 10 and counter-mould 11 and suitably aligned with its opening 8 is loaded with a metered dose of powdered material, and at the same time an article M already pressed and shaped in the other pair of mould 110 and counter mould 111 is unloaded or released, e.g. by gravity, through a respective unloading opening 9.
  • gap or seat 4 or 104
  • powdery or atomized materials are supplied to it according to a predefined layering and thus with different colourings in each layer, whereby upon compaction, the same become inner decorative veins that extend throughout the thickness of articles M.
  • actuator 12 presses mould 10 (or 110) against its counter mould 11 (or 111) in order to compact the powder material therein to form an article M.
  • the pressing force must be sufficient to provide flat article M with adequate cohesive solidity.
  • Actuator 12 causes mould 110 (or 10) to move away from counter-mould 111 (or 11), thus releasing formed article M that is supplied to underlying conveying means 5.
  • each unloaded article M from gap or sear 4 or 104 is engaged between underlying runs 19 of the first conveyors 18 and is caused to descend in a controlled way until it reaches a corresponding section 24.
  • Such a section is caused to be angularly displaced from a position, in which it is aligned with the runs 19, to a position in which it is co-planar with the second conveyor 23, onto which article M is to be transferred to be forwarded to the press 6 for permanent stabilization of its structure.
  • article M While being transferred towards the press 6,, article M can be decorated, if desired, by causing it to pass through a decorating station 26 advantageously arranged across the conveyor 23.
  • each formed article M can be decorated on its exposed face while still inside the seats or gaps 4 or 104.
  • gaps can be loaded with additional material after a slight and calibrated reopening of the moulds 10, 110 without, however, releasing the article M already formed inside thereof, i.e. so as to delimit between the exposed face of article M and the moulds 10, 110 (or counter-moulds 11, 111) a small vertical gap designed to be filled with an additional load (or a plurality of additional loads) of powdered material to be compacted owing to a second (or a number of actuations corresponding to the number of additional loads) actuation of actuators 12.
  • the second or additional load after a new compaction operation has been carried out, becomes the exposed decorative surface of the article M before the article is released through an opening 9.
  • formed articles M can also be subdivided into portions, e.g. by providing a cutting station 27 along said conveyor 23, preferably arranged upstream of the decoration station 26, if provided.
  • an inverse operation can be performed, i.e. arranging side by side a plurality of formed articles M in the pressing seat provided therein and pressing them together to obtain one article M only.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Adornments (AREA)
EP02013904A 2001-06-26 2002-06-21 Méthode et dispositif pour la manufacture d'objets en céramique décorée en forme de plaque Withdrawn EP1270160A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE20010590 2001-06-26
IE20010590A IE20010590A1 (en) 2001-06-26 2001-06-26 Method and apparatus for producing flat ceramic articles with full-thickness decorations

Publications (1)

Publication Number Publication Date
EP1270160A1 true EP1270160A1 (fr) 2003-01-02

Family

ID=11042803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02013904A Withdrawn EP1270160A1 (fr) 2001-06-26 2002-06-21 Méthode et dispositif pour la manufacture d'objets en céramique décorée en forme de plaque

Country Status (5)

Country Link
EP (1) EP1270160A1 (fr)
CN (1) CN1393325A (fr)
BR (1) BR0202396A (fr)
IE (1) IE20010590A1 (fr)
MX (1) MXPA02006354A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105365038A (zh) * 2015-11-17 2016-03-02 武汉天高熔接股份有限公司 一种适用于陶质焊接衬垫生产的方法
CN117183053A (zh) * 2023-11-07 2023-12-08 福建省德化县晖鑫陶瓷有限公司 一种陶瓷加工用拉坯装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221224A1 (fr) * 1985-10-08 1987-05-13 Enzo Mantegani Presse pour l'obtention d'objets exigeant pour leur fabrication industrielle, une étape de préformage avec faible dépense d'effort, et une pression finale élevée
DE4415177A1 (de) * 1994-04-29 1995-11-02 Tema Gmbh Pressvorrichtung
EP0960707A2 (fr) * 1998-05-28 1999-12-01 Händle Gmbh Presse pour tuiles
EP1005967A1 (fr) * 1998-11-30 2000-06-07 Ceramiche Provenza S.R.L. Procédé et dispositif d'alimentation pour moules dans les presses pour la fabrication de carreaux en céramique émaillés pressés

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221224A1 (fr) * 1985-10-08 1987-05-13 Enzo Mantegani Presse pour l'obtention d'objets exigeant pour leur fabrication industrielle, une étape de préformage avec faible dépense d'effort, et une pression finale élevée
DE4415177A1 (de) * 1994-04-29 1995-11-02 Tema Gmbh Pressvorrichtung
EP0960707A2 (fr) * 1998-05-28 1999-12-01 Händle Gmbh Presse pour tuiles
EP1005967A1 (fr) * 1998-11-30 2000-06-07 Ceramiche Provenza S.R.L. Procédé et dispositif d'alimentation pour moules dans les presses pour la fabrication de carreaux en céramique émaillés pressés

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105365038A (zh) * 2015-11-17 2016-03-02 武汉天高熔接股份有限公司 一种适用于陶质焊接衬垫生产的方法
CN105365038B (zh) * 2015-11-17 2017-09-29 武汉天高熔接股份有限公司 一种适用于陶质焊接衬垫生产的方法
CN117183053A (zh) * 2023-11-07 2023-12-08 福建省德化县晖鑫陶瓷有限公司 一种陶瓷加工用拉坯装置
CN117183053B (zh) * 2023-11-07 2024-02-23 福建省德化县晖鑫陶瓷有限公司 一种陶瓷加工用拉坯装置

Also Published As

Publication number Publication date
IE20010590A1 (en) 2002-12-30
MXPA02006354A (es) 2005-08-26
CN1393325A (zh) 2003-01-29
BR0202396A (pt) 2003-03-25

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