EP2050549A2 - Appareil pour l'alimentation en continu de poudres pour la fabrication de carreaux en céramique - Google Patents

Appareil pour l'alimentation en continu de poudres pour la fabrication de carreaux en céramique Download PDF

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Publication number
EP2050549A2
EP2050549A2 EP08166363A EP08166363A EP2050549A2 EP 2050549 A2 EP2050549 A2 EP 2050549A2 EP 08166363 A EP08166363 A EP 08166363A EP 08166363 A EP08166363 A EP 08166363A EP 2050549 A2 EP2050549 A2 EP 2050549A2
Authority
EP
European Patent Office
Prior art keywords
powders
layer
sheet
base layer
screed
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Withdrawn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
EP08166363A
Other languages
German (de)
English (en)
Other versions
EP2050549A3 (fr
Inventor
Stefano Scardovi
Silvano Valli
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.)
Sacmi Imola SC
Original Assignee
Sacmi Imola SC
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 Sacmi Imola SC filed Critical Sacmi Imola SC
Publication of EP2050549A2 publication Critical patent/EP2050549A2/fr
Publication of EP2050549A3 publication Critical patent/EP2050549A3/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Withdrawn legal-status Critical Current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
    • 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
    • B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface

Definitions

  • the invention relates to the sector of methods and plants for creating layers of ceramic powder destined to be pressed and comprising at least two layers, a base layer of monochrome powder and an upper layer of variously coloured powders, in order to create the graphic effect of the final decoration which will appear on the tile.
  • the invention concerns plants for preparing coloured powders in order to form ceramic tiles or slabs which are described in the Italian patent application RE2005A000086 in the Applicant's name.
  • the plants comprise a first vertical hopper which is situated above a moving horizontal plane onto which the hopper discharges a base layer of monochrome ceramic powders.
  • a second hopper Downstream of the first hopper, a second hopper discharges a second layer of coloured powders onto the base layer, which second layer is destined to constitute the visible decorated surface of the tile or slab.
  • the second hopper has the shape of a parallelepiped, with a first pair of surfaces, i.e. the lateral surfaces, being parallel to the direction of advancement of the base layer and a second pair of surfaces, the front and rear surfaces, being arranged at right angles to the direction of advancement of the base layer.
  • the distance between the front surface and the rear surface is substantially the same as the thickness of the layer of coloured powders to be deposited on the base layer of powder.
  • the coloured powders are loaded through the upper opening and discharged through the lower opening, which is situated at a distance from the base layer corresponding to the thickness of the layer.
  • the powders are loaded into the second hopper in a pre-ordered way by appropriate feeder means, which are of a known type, and subsequently the powders fall continuously onto the underlying advancing base layer. In this way, a layer of coloured powders is formed on the base layer, the layer reproducing generally speaking the same pre-ordered arrangement of the powders in the second hopper.
  • the prior art provides means which create cavities in the base layer before the second layer is deposited on it.
  • These means are constituted by a transversally and horizontally mobile scoop element, which is arranged at the output of the first hopper, and which sinks an irregular trough into the base layer of powder.
  • the known device has provided satisfactory results, it has a number of drawbacks due to that fact that the trough which the scoop element makes exhibits a section having a constant width, which is the same as the width of the scoop, and the trough cannot be associated to other troughs which are adjacent to, and possibly intersect, the first trough.
  • the aim of the present application is to obviate the above-mentioned drawbacks by means of a simple, rational solution.
  • the aim is achieved by the device in accordance with claim 1.
  • a discharge mouth of a first hopper 1 is closed by a hatch 11, which is activated by a jack 12.
  • the monochrome powders contained in the first hopper are discharged over the moving plane 2 in the direction of the arrow in figure 1 and suitably levelled by means of a screed 10, which adjusts the thickness of the first, or base layer.
  • a second vertical hopper 4 is arranged above the plane 2 upon which the first, base layer advances.
  • the hopper 4 has the shape of a parallelepiped with a first pair of surfaces, called lateral surfaces, which are arranged parallel to the direction of advancement of the moving plane 2, and a second pair of surfaces, 4a, 4b, front and rear respectively, which are arranged at right angles to the direction of advancement of the moving plane 2.
  • the hopper is loaded with coloured powders through an upper opening 41 by means of appropriate feeder means, which for the sake of simplicity are not shown, the coloured powders being arranged in a pre-ordered way and continuously gravity-fed through a lower opening 42, the distance from the base layer 100 transported on the plane 2 to the opening 42 being equivalent to the thickness S of the layer 200 of coloured powders to be deposited.
  • the distance B between the front surface 4a and the rear surface 4b of the hopper 4 is equivalent to the thickness S of the layer 200 of coloured powders to be deposited on the base layer 100.
  • a layer 200 of coloured powders can be formed superficially on the continuously advancing base layer 100, reproducing a same pre-ordered arrangement as the coloured powders contained in the hopper 4.
  • the pre-ordered arrangement of the coloured powders forming the layer 200 reproduces the typical veining found in natural stone.
  • the levelling edge of the screed 10 which levels the material exiting from the first hopper exhibits a non-rectilinear and modifiable outline in the vertical plane.
  • the screed 10 comprises a sheet 110 of elastomer or plastic material supported by means which can locally deform the sheet in the direction of advancement of the material, the deformation giving rise to local variations in the height of the sheet and consequently modifying the outline of the screed edge in the vertical plane.
  • the sheet is gripped between a first continuous plate 101, which is adjacent to the mouth of the first hopper 1, and at least a second preferably flexible plate 102, which is supported opposite the plate 101 by a bar 105.
  • a series of bolts 103 screwed into the bar 105 pushes the plate 102 against the sheet 110.
  • the bolts could be replaced by other equivalent means, for example hydraulic pistons.
  • the second flexible plate 102 can advantageously be replaced by an alignment of rigid plates which are independent of each other.
  • Varying the degree of tightness of the bolts 103 gives rise to deformations of the sheet 110, by virtue of which deformations the lower profile of the sheet 110 assumes a configuration which is undulated with continuity, without sharp variations to its lower profile.
  • VULKOLLAN ® which is produced by BAYER.
  • the sheet conveniently has a thickness/height ratio of between 1:10 and 1:6.
  • depressions or troughs 20 are created on the upper surface of the powder of the base layer, alternating with areas in relief which vary continuously in amplitude, depth and direction.
  • At least some of the bolts 103 can be activated by a preferably electric actuator device which is provided with electronic control means, enabling the profile of the sheet 110 to be varied at the bolt.
  • the actuator means are of a known type, thus are not represented , since the actuator means can easily be implemented by the person skilled in the art.
  • the screed 10 is height-adjustable; to this end, the bar 105 is supported by two lateral jacks 106 which are connected by the shaft 108 such as to be activated simultaneously by a single handle 107.
  • the troughs 20 and the relative zones in relief alter the pre-ordered arrangement of the coloured powders forming the layer falling on the first layer from the second hopper 4, which layer would otherwise reproduce the same arrangement of the powders which is present in the hopper 4.
  • the powders 33 fall at a constant speed along the front of the screed.
  • This phenomenon alters the arrangement of the powders falling from the hopper 4, which alteration is transferred and reproduced on the powders of the second layer being deposited on the base layer, thus modifying the graphic aspect of the decoration.
  • the system for altering the arrangement of the powders forming a layer for creating ceramic tiles or slabs according to the invention makes it possible to satisfy these requirements and to obviate the drawbacks mentioned in the preamble of this description.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP08166363A 2007-10-15 2008-10-10 Appareil pour l'alimentation en continu de poudres pour la fabrication de carreaux en céramique Withdrawn EP2050549A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRE20070108 ITRE20070108A1 (it) 2007-10-15 2007-10-15 '' apparato per la alimentazione continua di polveri nella fabbricazione di piastrelle ceramiche ''

Publications (2)

Publication Number Publication Date
EP2050549A2 true EP2050549A2 (fr) 2009-04-22
EP2050549A3 EP2050549A3 (fr) 2010-11-10

Family

ID=40314040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08166363A Withdrawn EP2050549A3 (fr) 2007-10-15 2008-10-10 Appareil pour l'alimentation en continu de poudres pour la fabrication de carreaux en céramique

Country Status (2)

Country Link
EP (1) EP2050549A3 (fr)
IT (1) ITRE20070108A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3593969A1 (fr) * 2018-07-05 2020-01-15 Masa GmbH Dispositif de dosage pour matières en vrac dans des moules de briques et procédé de fabrication de briques textures
CN114211602A (zh) * 2021-12-30 2022-03-22 怀化远大建筑工业有限公司 一种便于预制板加工装置
EP4331798A2 (fr) 2016-06-13 2024-03-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Machine et procédé de compactage de poudre céramique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097613A (en) * 1931-07-28 1937-11-02 Bemis Ind Inc Process and apparatus for making and coloring cement fiber and the like products
IT1287505B1 (it) * 1996-11-22 1998-08-06 Algeri Maris Metodo e mezzi per la pressatura di piastrelle ceramiche.
DE29709301U1 (de) * 1997-05-27 1997-11-27 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Befestigen von mindestens einem im wesentlichen ortsfest angeordneten dünnen, langgestreckten Funktionselement
DE10217199C1 (de) * 2002-04-18 2003-09-04 Dietrich Engmann Vorrichtung zur automatischen Korrektur der Dichte von keramischen Fliesen-Rohlingen
ITRE20050086A1 (it) * 2005-07-19 2007-01-20 Sacmi Sistema per alterare la disposizione delle polveri formanti una striscia per la formatura di piastrelle o lastre ceramiche

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4331798A2 (fr) 2016-06-13 2024-03-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Machine et procédé de compactage de poudre céramique
EP3593969A1 (fr) * 2018-07-05 2020-01-15 Masa GmbH Dispositif de dosage pour matières en vrac dans des moules de briques et procédé de fabrication de briques textures
CN114211602A (zh) * 2021-12-30 2022-03-22 怀化远大建筑工业有限公司 一种便于预制板加工装置

Also Published As

Publication number Publication date
ITRE20070108A1 (it) 2009-04-16
EP2050549A3 (fr) 2010-11-10

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