EP0829333A1 - Dispositif pour la décoration des carreaux en céramique - Google Patents

Dispositif pour la décoration des carreaux en céramique Download PDF

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Publication number
EP0829333A1
EP0829333A1 EP97830330A EP97830330A EP0829333A1 EP 0829333 A1 EP0829333 A1 EP 0829333A1 EP 97830330 A EP97830330 A EP 97830330A EP 97830330 A EP97830330 A EP 97830330A EP 0829333 A1 EP0829333 A1 EP 0829333A1
Authority
EP
European Patent Office
Prior art keywords
skin
tiles
glaze
roller
pressing
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
EP97830330A
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German (de)
English (en)
Other versions
EP0829333B1 (fr
Inventor
Alfonso Benedetti
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.)
AIT ADLER INDUSTRIETECHNIK GMBH
Original Assignee
EMILCERAMICA 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 EMILCERAMICA SpA filed Critical EMILCERAMICA SpA
Publication of EP0829333A1 publication Critical patent/EP0829333A1/fr
Application granted granted Critical
Publication of EP0829333B1 publication Critical patent/EP0829333B1/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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/046—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • 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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/001—Applying decorations on shaped articles, e.g. by painting
    • 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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/044—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers with glaze or engobe or enamel or varnish

Definitions

  • the invention relates to a device for decorating ceramic tiles.
  • a known process comprises essentially the following phases: a) depositing glaze on a non-permeable matrix exhibiting recesses composed of blind cavities for containing small quantities of glaze and afforded over a portion of external cylindrical surface, said portion being elastically deformable and able to rotate; b) removing, by means of a doctor, an excess of glaze deposited on said matrix; c) transferring the glaze contained into the above-mentioned cavities directly by contact and by means of rolling without dragging of the matrix-bearing cylindrical surface on an underlying surface of a tile transiting along a tile feed line.
  • the drum which is supported on a rotatable shaft, is constituted by an internal cylindrical core on which an elastically-deformable peripheral part is made solid, which part comprises an internal layer made in silicone foam, of a considerable thickness and spongy consistency, being highly elastically deformable, and an external layer, also elastically deformable, on which the matrix is cut.
  • the above known machine exhibits a number of drawbacks.
  • the image reproduced on the tile is less precise and sharp with respect to decorations that can be obtained with other known glazing devices such as, for example, silk-screening machines.
  • the above-mentioned known machine is suitable only for some applications.
  • it is used on ceramic tiles almost exclusively for less-defined decorations, such as for example those which reproduce the veining of stone, marble and the like.
  • An aim of the present invention is to eliminate the above-described drawbacks by providing a device for the decoration of ceramic tiles, of a rotogravure type with an etched matrix, which enables definite and perfectly positioned and arranged patterns on tiles to be achieved.
  • An advantage of the invention is that it can print more than one image even on large tiles.
  • a further advantage is that it is constructionally simple and economical.
  • the invention further enables sharp decorations to be realised on unfired and deformed tiles, without causing any breakage, and also at the edges of the tiles, that is in the connection zones between the face to be decorated and the sides of the tiles themselves.
  • a device for decorating ceramic tiles 3 comprising a conveyor 2 which is inserted along a usual tile 3 feed line, not shown in the figures.
  • the conveyor 2 bears transversal strips 4 which correctly position the tiles 3 and push them along the conveyor 2 in an advancement direction 6 indicated by an arrow in figure 1, with the tiles 3 specially distanced one from a next.
  • the correct positioning of the tiles 3 with respect to the means for glazing can be obtained using other systems of known type, for example drawing the tiles by means of two lateral chains having a synchronised motion with the means for glazing.
  • a rotogravure decorating-glazing device having an etched matrix, comprising a support frame 5 provided with two crowns 17, of a closed annular shape and constrained by means of spokes to a rotating drive shaft 15.
  • the crowns 17, which are distanced one from another and situated at opposite extremities, are provided with respective cylindrical external surfaces which are equal one to the other and coaxial to the drive shaft 15, on which a skin 16 is wound and fixed at lateral edges thereof.
  • the skin 16 externally delimited by a smooth surface, is made of an elastically deformable material which is non-permeable to glaze; it is preferably made of an elastomer, such as for example silicone rubber.
  • the skin 16 Once applied on the crowns 17, the skin 16 exhibits a tubular shape which is coaxial with the support frame 5.
  • the central part of the skin 16 is not directly fixed to the lateral crowns 17 of the frame 5 and is therefore, on its internal side, not occupied by the frame itself.
  • This central and free part of the skin 16 exhibits on an external side thereof small blind cavities constituting a matrix, conformed and arranged so as to create an image to be reproduced, and able to contain small quantities of glaze.
  • the etching method for obtaining the above-mentioned pattern (i.e. the matrix) on the smooth external surface of the skin 16 is known.
  • the skin 16 is supported only at lateral edges thereof on the frame 5: it is rigidly anchored - for example, by gluing - to the crowns 17 at the edges, while it is free and elastically deformable at its centre, that is in the part where the matrix is etched and which is destined to come into contact with the tiles 3. Thanks to the lateral support offered by the cylindrical crowns 17, the skin 16 assumes, if not deformed, a substantially cylindrical shape in the free central part.
  • the frame 5 has its axis perpendicular to the advancement direction 6 of the conveyor 2 and is provided with rotary motion in a rotation direction 13 indicated by an arrow.
  • the rotation motion of the frame 5 is discontinuous and synchronised with the conveyor 2 motion by means for synchronising of known type and not illustrated. Thanks to the means for synchronising the discontinuous rotation of the frame 5 means that when a tile 3 nears the frame 5 the latter is set in rotation by the shaft 15, bringing the tile 3 and the external side of the etched skin 16 into contact at a generatrix, so that the glaze is transferred from the matrix on to the tile 3.
  • the frame 5 is located on the conveyor 2 in such a way that the peripheral speed of the skin 16 is equal to the advancement speed of the tiles 3, so that the contact between the skin 16 and the tile 3 is achieved by pure rolling, with no dragging.
  • a sensor is also provided, of known type and not illustrated, which verifies the presence or absence of a tile 3 and sets the shaft 15 in rotation only if a tile 3 presence is verified; if this does not happen, the shaft 15 does not rotate and awaits the next tile 3.
  • This synchronisation mechanism between the conveyor 2 and the shaft 15 is of known type and is normally used in tile silk-screening.
  • the external surface of theskin 16 exhibits two (or more) zones bearing the images to the reproduced and destined to contact the transiting tiles 3, which are two (or more) in circumferential direction with two non-etched zones. This enables two different decorations to be printed on a same line.
  • the non-etched zones are angularly arranged in such a way, when the shaft 15 is still, as to correspond to the free space between two consecutive tiles 3 on the conveyor 2.
  • Known type means are provided for depositing the glaze on the matrix etched on the external surface of the skin 16.
  • the means for depositing the glaze comprise, for example, a feed conduit 7.
  • a doctor 8, supported on a frame 14, is predisposed to operate in contact with a generatrix of the external lateral surface of the skin 16, and has the task of scraping the external lateral surface thus removing the excess of glaze as well as any other impurities deposited on the surface.
  • An annular seat 18 is afforded on the periphery of each crown 17, which seat 18 houses a rubber washer - not illustrated and constituted for example by an O-ring - so as to form an annular relief for discharge of excess glaze removed by the doctor 8 into a collection tray.
  • the device 1 comprises first and second means for pressing the central part (free of the frame 5 and elastically deformable) of the skin 16 from inside towards the outside, respectively against the doctor 8 and the transiting tiles 3.
  • the first means for pressing comprise a first roller 11, mounted idle on a special support and internally tangential to the skin 16 surface at the position of the doctor 8.
  • the second means for pressing comprise a second roller 12, also mounted idle and internally tangential to the skin 16 surface at the lower generatrix of the skin 16, that is in the zone where contact with the tile 3 takes place.
  • the two rollers 11 and 12 are situated in the space comprised between the two lateral crowns 17 and act from the inside of the skin 16.
  • the two rollers 11 and 12 are preferably made of a soft, giving material, such as for example foamy silicone.
  • Both rollers 11 and 12 are positionable radially with respect to the skin 16, by means of a screw device, respectively 9 and 10, thanks to which it is possible to predetermine and regulate the pressure with each roller presses the elastic surface of the tile 16 against the doctor 8 or the transiting tiles 3.
  • the diameter of each roller 11 and 12 is considerably less - almost half - of the degree of curvature of the skin 16 wound on the crowns 17.
  • the shaft 15 rotates by an angle equal to a revolution divided by the number of images etched on the skin 16.
  • the tile 3 transits below the tubular skin 16 which is fed with glaze through the outlet mouth of the conduit 7.
  • the glaze is deposited on the skin 16 in a zone situated upstream of the doctor 8, with reference to the rotation direction 13 of the rotating apparatus.
  • a generatrix of the skin 16 passes between the doctor 8 and the first roller 11 and is compressed by said first roller 11 against the doctor 8; the doctor 8 scrapes the generatrix of the skin 16 and removes the excess glaze, leaving only the glaze which fills the blind cavities of the matrix.
  • the doctor 8 could not perform its action because the skin 16, which must be scraped, being thin, deformable and not directly supported internally, is not stiff enough to offer resistance to the action of the doctor 8 to obtain a good scrape.
  • the lower generatrix of the skin 16 that is for the zone where contact is made with the tiles 3 and the transfer of the glaze on to the tiles 3 is performed.
  • the skin 16 is pressed by the second roller 12 against the upper surface of the tile 3, and thanks to this pressure the glaze contained in the cavities etched on the skin 16 is extracted and deposited on the surface of the tile, reproducing the image designed in the cavities.
  • pressure on the doctor and the tiles can be regulated, independently and with great simplicity.
  • both the pressure between the doctor and the matrix surface (for the scraping operation) and the reciprocal pressure between the matrix and the tiles (for the transfer of the glaze) are achieved is substantially different to that of prior-art rotogravure machines.
  • both the above-mentioned pressures are due to the interaction between the rigid pressing elements, at least one of which is represented by the surface of the rotating drum on which the matrix is etched (while the other rigid pressing element is represented either by the doctor or the tile).
  • the etched surface of the matrix while provided with a certain elastic deformability, must in any case be sufficiently rigid to contrast bother the doctor and the tile. Proof of this, for example, is the fact that to adjust the pressure of transfer of the glaze on to the tile the position of the matrix-bearing drum relative to the tile has to be modified.
  • the situation is different.
  • the matrix is predisposed on a skin which, both at the doctor position and the tile position, is too elastic correctly to scrape off the excess glaze correctly or to transfer the glaze on to the tile properly.
  • the contrasting element is not constituted by the surface bearing the matrix but rather by fixed contrasting means which are independent from each other and do not have the function of bearing the matrix, but only that of pressing it against the doctor or tile. Consequently the contrast means, characteristic of the invention, may exhibit, in the zone at which they act against the skin, a degree of curvature which is relatively very small.
  • the contact zone between the matrix and the tiles is constituted by an extremely thin line, in which the pressing action is concentrated, which, as has been mentioned, considerably improves the precision in the glaze transfer and the sharpness of the image printed on the tiles.
  • the regulation of the pressures is done by adjusting the position of the contrasting means against the rotating tubular skin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Finishing Walls (AREA)
  • Glass Compositions (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Coating Apparatus (AREA)
EP97830330A 1996-09-13 1997-07-01 Dispositif pour la décoration des carreaux en céramique Expired - Lifetime EP0829333B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MO000114A IT1287473B1 (it) 1996-09-13 1996-09-13 Dispositivo per decorare piastrelle ceramiche
ITMO960114 1996-09-13

Publications (2)

Publication Number Publication Date
EP0829333A1 true EP0829333A1 (fr) 1998-03-18
EP0829333B1 EP0829333B1 (fr) 2001-09-19

Family

ID=11386143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830330A Expired - Lifetime EP0829333B1 (fr) 1996-09-13 1997-07-01 Dispositif pour la décoration des carreaux en céramique

Country Status (5)

Country Link
EP (1) EP0829333B1 (fr)
DE (1) DE69706792T2 (fr)
ES (1) ES2161431T3 (fr)
IT (1) IT1287473B1 (fr)
PT (1) PT829333E (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256427A2 (fr) * 2001-05-08 2002-11-13 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Installation et procédé pour la fabrication de carreaux de grandes dimensions en céramique
WO2004022296A1 (fr) * 2002-09-05 2004-03-18 Sacmi - Cooperativa Meccanici Imola - Soc. Coop. Ar.L. Procédé et installation de fabrication de carreaux céramiques
EP1529615A2 (fr) * 2003-11-10 2005-05-11 Tecno-Europa S.r.l. Unité pour la décoration d'articles en céramique
CN101342522B (zh) * 2007-07-09 2011-03-30 奇裕企业股份有限公司 同步上下料的自动点胶系统及其方法
US8337947B2 (en) 2006-02-21 2012-12-25 System S.P.A. Decorating with powder material
CN108437172A (zh) * 2018-03-29 2018-08-24 郑州科技学院 雾化施釉装置及施釉方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041133B3 (de) * 2004-08-24 2005-12-22 Bernhard Siegl Vorrichtung zum Auftragen auf Bahnen
ITRE20040152A1 (it) * 2004-12-22 2005-03-22 Sacmi Sistema di compattazione a nastro di polveri ceramiche per la formatura di lastre
ES2749696B2 (es) * 2018-09-21 2020-09-29 Personas Y Tecnologia S L Cilindro para aplicar engobe en piezas ceramicas
CN111391093A (zh) * 2020-04-22 2020-07-10 福州市晋安区凤儒名工艺品有限公司 一种陶瓷绝缘子高效浸釉机
CN112571600A (zh) * 2020-12-31 2021-03-30 石小凡 一种用于陶瓷喷釉的机器人

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827901A1 (de) * 1978-06-24 1980-01-10 Saueressig Gmbh Druckmaschine fuer bahnfoermiges gut
JPS57197067A (en) * 1981-05-29 1982-12-03 Nippon Paint Co Ltd Continuously pressing and leveling apparatus for coating having recessed and protruded parts
EP0645223A1 (fr) * 1993-09-10 1995-03-29 T.S.C. S.r.l. Machine rotative d'emaillage et de décoration pour carreaux en céramique
EP0677364A1 (fr) * 1994-03-29 1995-10-18 SYFAL S.r.l. Machine rotative d'émaillage et de décoration, en particulier pour carreaux en céramique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827901A1 (de) * 1978-06-24 1980-01-10 Saueressig Gmbh Druckmaschine fuer bahnfoermiges gut
JPS57197067A (en) * 1981-05-29 1982-12-03 Nippon Paint Co Ltd Continuously pressing and leveling apparatus for coating having recessed and protruded parts
EP0645223A1 (fr) * 1993-09-10 1995-03-29 T.S.C. S.r.l. Machine rotative d'emaillage et de décoration pour carreaux en céramique
EP0677364A1 (fr) * 1994-03-29 1995-10-18 SYFAL S.r.l. Machine rotative d'émaillage et de décoration, en particulier pour carreaux en céramique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 046 (C - 153) 23 February 1983 (1983-02-23) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1256427A2 (fr) * 2001-05-08 2002-11-13 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Installation et procédé pour la fabrication de carreaux de grandes dimensions en céramique
EP1256427A3 (fr) * 2001-05-08 2003-10-22 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Installation et procédé pour la fabrication de carreaux de grandes dimensions en céramique
US6800229B2 (en) 2001-05-08 2004-10-05 Sacmi-Cooperativa Meccanici Imola-Soc. Coop. A R.L. Method for forming large-dimension ceramic tiles
US7267536B2 (en) 2001-05-08 2007-09-11 Sacmi-Cooperativa Meccanici Imola-Soc. Coop. A.R.L. Apparatus for forming large-dimension ceramic tiles
WO2004022296A1 (fr) * 2002-09-05 2004-03-18 Sacmi - Cooperativa Meccanici Imola - Soc. Coop. Ar.L. Procédé et installation de fabrication de carreaux céramiques
CN100434250C (zh) * 2002-09-05 2008-11-19 萨克米-伊莫拉机械合作社-股份有限合作公司 用于压制预压实坯料或片以制得瓷砖的方法及设备
EP1529615A2 (fr) * 2003-11-10 2005-05-11 Tecno-Europa S.r.l. Unité pour la décoration d'articles en céramique
EP1529615A3 (fr) * 2003-11-10 2005-11-16 Tecno-Europa S.r.l. Unité pour la décoration d'articles en céramique
US8337947B2 (en) 2006-02-21 2012-12-25 System S.P.A. Decorating with powder material
CN101342522B (zh) * 2007-07-09 2011-03-30 奇裕企业股份有限公司 同步上下料的自动点胶系统及其方法
CN108437172A (zh) * 2018-03-29 2018-08-24 郑州科技学院 雾化施釉装置及施釉方法
CN108437172B (zh) * 2018-03-29 2023-07-18 郑州科技学院 雾化施釉装置及施釉方法

Also Published As

Publication number Publication date
IT1287473B1 (it) 1998-08-06
DE69706792T2 (de) 2002-05-29
EP0829333B1 (fr) 2001-09-19
PT829333E (pt) 2002-02-28
DE69706792D1 (de) 2001-10-25
ITMO960114A0 (it) 1996-09-13
ITMO960114A1 (it) 1998-03-13
ES2161431T3 (es) 2001-12-01

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