EP1106336A1 - Dispositif pour chasser l'air emprisonné dans un matériau en poudre fine lors d'un cycle de pressage pour la fabrication d'objets en céramique - Google Patents

Dispositif pour chasser l'air emprisonné dans un matériau en poudre fine lors d'un cycle de pressage pour la fabrication d'objets en céramique Download PDF

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Publication number
EP1106336A1
EP1106336A1 EP99204104A EP99204104A EP1106336A1 EP 1106336 A1 EP1106336 A1 EP 1106336A1 EP 99204104 A EP99204104 A EP 99204104A EP 99204104 A EP99204104 A EP 99204104A EP 1106336 A1 EP1106336 A1 EP 1106336A1
Authority
EP
European Patent Office
Prior art keywords
flat body
press
holes
powder material
outside environment
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
EP99204104A
Other languages
German (de)
English (en)
Other versions
EP1106336B1 (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
Application filed by Ronflette SA filed Critical Ronflette SA
Priority to EP19990204104 priority Critical patent/EP1106336B1/fr
Priority to ES99204104T priority patent/ES2264577T3/es
Priority to BR0005610A priority patent/BR0005610A/pt
Priority to CN 00134820 priority patent/CN1309014A/zh
Publication of EP1106336A1 publication Critical patent/EP1106336A1/fr
Application granted granted Critical
Publication of EP1106336B1 publication Critical patent/EP1106336B1/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
    • 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
    • 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
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0008—Venting channels, e.g. to avoid vacuum during demoulding or allowing air to escape during feeding, pressing or moulding
    • 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
    • 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
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/44—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for treating with gases or degassing, e.g. for de-aerating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
    • B30B15/0017—Deairing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses

Definitions

  • the invention relates to an apparatus for removing air from soft powder material during the press-forming cycle in the manufacture of ceramic products.
  • the invention is applicable in press-forming powders for the forming of ceramic slabs and/or tiles.
  • one of the main problems is removal of the air present inside the bottom die mixed with the ceramic material to be pressed.
  • Ceramic powder mixtures usually composed of granules with a calibre of a few tenths of millimetres often referred-to as "soft" material, always retain a certain quantity of air when placed in the bottom die.
  • the press hydraulic circuit is commanded to discharge the punch hydraulic cylinder at certain points during the process and for short predetermined times.
  • the punch rises by a small amount, sufficient for the partially-compressed air to escape from the material and be bled out through the space created by the small play existing between the punch and the bottom die.
  • a first of these drawbacks is the inevitable slowing down of the press-forming cycle, which negatively influences machine productivity.
  • a further drawback is that the management of the whole forming operation is rendered more complicated, as the operation cycle must be tailored to the single product being pressed.
  • Air removal techniques are not the same for all products, but rather depend on many factors: the shape of the tile, its thickness, the type of "soft" material, the humidity level of the material itself, its granulometry, etc. All of these factors lead to the necessity of making an empirical search and try-out routine for each product to find out how many pauses will be needed and at what compression levels.
  • a still further drawback relates to the structure of the hydraulic circuit of the press-forming machines which, obviously, have to be predisposed so as to enable easy setting and carrying-out of the press-forming cycle characterised by one or more pauses.
  • a still further drawback can consist in a reduction in the overall quality level of the press-forming operation - with other parts of the cycle (i.e. the actual powder-pressing, loading and extraction) hurried up in the attempt to recuperate time lost due to the air-removal pauses.
  • the main aim of the present invention is to provide an apparatus able to obviate the above-described drawbacks and limitations in the prior art.
  • the invention offers numerous advantages over traditional prior art press-forming techniques.
  • a further advantage relates to the structure of the hydraulic circuit of the press-former used for the forming cycle, which is decidedly simpler, with all the advantages that greater simplicity brings.
  • the press 8 is used as a forming machine for forming ceramic products, especially slabs and/or tiles, starting from a layer of soft powder material 11 which initially contains a considerable quantity of air.
  • the machine is equipped with an apparatus which has the aim of removing the air from the material during the press-forming stage, which apparatus essentially includes a plurality of holes on at least one of the two faces the soft material 11 comes into contact with.
  • the holes are in contact with the outside environment and are distributed over the whole contact surface.
  • the air initially contained in the soft material 11 is expelled following a compression action exerted on the material 11, and passes through cavities situated directly below the holes, which cavities are in direct contact with the outside environment.
  • the holes are denoted by reference number 3 and are distributed over an active surface 6, destined to come into direct contact with the powder material 11, of a flat body 5, which body 5 exhibits, on a face thereof opposite to the active surface 6, a plurality of the above-mentioned cavities 4, which are interconnecting.
  • the cavities 4 are in free communication with the outside through openings 12 at the edges of the flat body 5.
  • the flat body 5 exhibits, on the opposite side to the active surface, reliefs 7, the ends of which identify a rest surface, by which the body 5 is rested on the surface 20 of the element 2 - although the ends of the reliefs 7 could equally be rested and fixed on the surface 10 of element 1.
  • the flat body 5 is materially constituted by a mobile belt provided with intermittent motion and synchronised with the pressing action exerted by the first element 1 and the second element 2, which intermittent belt motion is in a perpendicular direction to that of the pressing action.
  • the loading of the soft powder material 11 can therefore take place away from the press 8, on the part of the belt which is not yet located between the first element 1 and the second element 2.
  • the flat body 5 is highly elastically deformable, at least in those parts thereof not interested by the reliefs 7, and can preferably be made of an elastomer material. This characteristic gives good isostatic results during the pressing phase.
  • Lateral containment elements can be constrained to the surface 10 or the surface 6 of the flat body 5, which elements should be highly elastically deformable; their task is to laterally contain the pressing material, including during press-forming.
  • the cavities 4, which are quite large, are in fact the spaces not occupied by the reliefs 7, which are not very elastically deformable so that during compression the height of the cavities is prevented from being significantly reduced.
  • the homogeneous distribution of the holes 3 over the surface of the material to be pressed enables a homogeneous removal of air to be obtained, giving a final press-formed product which is structurally very homogeneous.
  • the homogeneous distribution of the holes 3 also enables the maximum pressure needed to achieve press-forming to be much lower than that required by traditional techniques.
  • the invention is also rather simple and is very adaptable to use in a production line where the press-former is of the type schematically illustrated in the figures of the drawings, i.e. with the upper element 1 (punch) fixed and the lower element 2 (bottom die) mobile and actuated by a hydraulic cylinder; and with the material loading functions, the containment of the material during the press-forming phase, and the pressed-material unloading operation being performed by a continuous belt constituted by a flat body 5 having intermittent predetermined step-motion, and being synchronised with the press-former 8 work cycle.

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)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Filtering Materials (AREA)
EP19990204104 1999-12-03 1999-12-03 Dispositif pour chasser l'air emprisonné dans un matériau en poudre fine lors d'un cycle de pressage pour la fabrication d'objets en céramique Expired - Lifetime EP1106336B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19990204104 EP1106336B1 (fr) 1999-12-03 1999-12-03 Dispositif pour chasser l'air emprisonné dans un matériau en poudre fine lors d'un cycle de pressage pour la fabrication d'objets en céramique
ES99204104T ES2264577T3 (es) 1999-12-03 1999-12-03 Dispositivo para eliminar aire de un material en polvo flaccido en un ciclo de moldeo por presion para la fabricacion de productos ceramicos.
BR0005610A BR0005610A (pt) 1999-12-03 2000-11-28 Aparelho para remoção de ar de material em pó macio em um ciclo de formação de prensagem para manufatura de produtos cerâmicos
CN 00134820 CN1309014A (zh) 1999-12-03 2000-12-01 在陶瓷产品模压成形周期中从粉末材料排除空气的装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990204104 EP1106336B1 (fr) 1999-12-03 1999-12-03 Dispositif pour chasser l'air emprisonné dans un matériau en poudre fine lors d'un cycle de pressage pour la fabrication d'objets en céramique

Publications (2)

Publication Number Publication Date
EP1106336A1 true EP1106336A1 (fr) 2001-06-13
EP1106336B1 EP1106336B1 (fr) 2006-07-19

Family

ID=8240966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990204104 Expired - Lifetime EP1106336B1 (fr) 1999-12-03 1999-12-03 Dispositif pour chasser l'air emprisonné dans un matériau en poudre fine lors d'un cycle de pressage pour la fabrication d'objets en céramique

Country Status (4)

Country Link
EP (1) EP1106336B1 (fr)
CN (1) CN1309014A (fr)
BR (1) BR0005610A (fr)
ES (1) ES2264577T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003090992A1 (fr) * 2002-04-25 2003-11-06 Tmd Friction Europe Gmbh Procede et dispositif pour fabriquer des garnitures de frein ou d'embrayage en matieres pressees liees par liant
EP2384870A1 (fr) * 2010-05-04 2011-11-09 Officina Ferrari Carlo Societa' Per Azioni Moule pour la fabrication de carreaux en céramique équipé d'une expulsion d'air automatique
JP2014095471A (ja) * 2012-11-07 2014-05-22 Oci Co Ltd 真空断熱材芯材の成形装置及びこれにより製造された真空断熱材（ａｐｐａｒａｔｕｓｆｏｒｍｏｌｄｉｎｇｃｏｒｅｏｆｖａｃｕｕｍｉｎｓｕｌａｔｉｏｎｐａｎｅｌａｎｄｖａｃｕｕｍｉｎｓｕｌａｔｉｏｎｐａｎｅｌｍａｎｕｆａｃｕｒｅｄｔｈｅｒｅｂｙ）
CN105377517A (zh) * 2013-07-05 2016-03-02 江原大学校产学协力团 通过向普通混凝土混入空气并消散的过程制造高性能混凝土的高性能混凝土制造装置及其制造方法
CN107685388A (zh) * 2017-09-29 2018-02-13 晋晓瞳 一种陶泥压打装置及其使用方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106292761B (zh) * 2015-06-08 2019-02-15 佛山市恒力泰机械有限公司 一种陶瓷粉料液压自动压制机排气的控制方法及装置
CN107866570A (zh) * 2017-12-15 2018-04-03 东北大学 一种用于粉末冶金温压成形的设备
CN110978224B (zh) * 2019-12-23 2021-05-04 台州路桥朝槿自动化科技有限公司 一种建筑瓷砖成型加工的压制设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026940A (en) * 1934-12-13 1936-01-07 Harbison Walker Refractories Shaping refractory articles
US3737276A (en) * 1971-09-17 1973-06-05 Carborundum Co Molding of powdered or granular material
EP0297739A1 (fr) * 1987-07-01 1989-01-04 Micropore International Limited Moulage d'une isolation thermique
JPH0399805A (ja) * 1989-09-12 1991-04-25 Lonseal Corp コンクリート型枠用養生シート
GB2260318A (en) * 1991-09-17 1993-04-14 Daiken Corp An inorganic plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026940A (en) * 1934-12-13 1936-01-07 Harbison Walker Refractories Shaping refractory articles
US3737276A (en) * 1971-09-17 1973-06-05 Carborundum Co Molding of powdered or granular material
EP0297739A1 (fr) * 1987-07-01 1989-01-04 Micropore International Limited Moulage d'une isolation thermique
JPH0399805A (ja) * 1989-09-12 1991-04-25 Lonseal Corp コンクリート型枠用養生シート
GB2260318A (en) * 1991-09-17 1993-04-14 Daiken Corp An inorganic plate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 283 (M - 1137) 18 July 1991 (1991-07-18) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003090992A1 (fr) * 2002-04-25 2003-11-06 Tmd Friction Europe Gmbh Procede et dispositif pour fabriquer des garnitures de frein ou d'embrayage en matieres pressees liees par liant
AU2003227647B2 (en) * 2002-04-25 2008-01-24 Tmd Friction Services Gmbh Method and device for the production of brake linings or clutch linings made of pressing materials that are bonded by means of a bonding agent
EP2384870A1 (fr) * 2010-05-04 2011-11-09 Officina Ferrari Carlo Societa' Per Azioni Moule pour la fabrication de carreaux en céramique équipé d'une expulsion d'air automatique
JP2014095471A (ja) * 2012-11-07 2014-05-22 Oci Co Ltd 真空断熱材芯材の成形装置及びこれにより製造された真空断熱材（ａｐｐａｒａｔｕｓｆｏｒｍｏｌｄｉｎｇｃｏｒｅｏｆｖａｃｕｕｍｉｎｓｕｌａｔｉｏｎｐａｎｅｌａｎｄｖａｃｕｕｍｉｎｓｕｌａｔｉｏｎｐａｎｅｌｍａｎｕｆａｃｕｒｅｄｔｈｅｒｅｂｙ）
EP2730398A3 (fr) * 2012-11-07 2014-07-09 OCI Company Ltd. Appareil de moulage de noyau de panneau d'isolation sous vide et panneau d'isolation sous vide fabriqué par ce procédé
CN105377517A (zh) * 2013-07-05 2016-03-02 江原大学校产学协力团 通过向普通混凝土混入空气并消散的过程制造高性能混凝土的高性能混凝土制造装置及其制造方法
CN107685388A (zh) * 2017-09-29 2018-02-13 晋晓瞳 一种陶泥压打装置及其使用方法
CN107685388B (zh) * 2017-09-29 2019-10-29 晋晓瞳 一种陶泥压打装置及其使用方法

Also Published As

Publication number Publication date
CN1309014A (zh) 2001-08-22
BR0005610A (pt) 2001-08-07
ES2264577T3 (es) 2007-01-01
EP1106336B1 (fr) 2006-07-19

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