EP1226912A2 - Verfahren und Vorrichtung zum Füllen einer Form zur Herstellung von keramischen Gegenständen - Google Patents

Verfahren und Vorrichtung zum Füllen einer Form zur Herstellung von keramischen Gegenständen Download PDF

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Publication number
EP1226912A2
EP1226912A2 EP02001018A EP02001018A EP1226912A2 EP 1226912 A2 EP1226912 A2 EP 1226912A2 EP 02001018 A EP02001018 A EP 02001018A EP 02001018 A EP02001018 A EP 02001018A EP 1226912 A2 EP1226912 A2 EP 1226912A2
Authority
EP
European Patent Office
Prior art keywords
tray
belt
mold
chambers
layer
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Withdrawn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
EP02001018A
Other languages
English (en)
French (fr)
Other versions
EP1226912A3 (de
Inventor
Umberto Manfredini
Stefano Schianchi
Agostino Fiorentini
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.)
Manfredini E Schianchi Srl
Original Assignee
Manfredini E Schianchi Srl
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 Manfredini E Schianchi Srl filed Critical Manfredini E Schianchi Srl
Publication of EP1226912A2 publication Critical patent/EP1226912A2/de
Publication of EP1226912A3 publication Critical patent/EP1226912A3/de
Withdrawn legal-status Critical Current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
    • B28B13/027—Feeding the moulding material in measured quantities from a container or silo by using a removable belt or conveyor transferring the moulding material to the moulding cavities
    • 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
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
    • 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 for loading material into a mold for pressing ceramic articles, particularly tiles, and to the corresponding loading device.
  • Loading devices which comprise a movable carriage, provided with a tray that is internally divided by a powder containment grid and is alternately actuated so as to perform a translational motion between a feeder station upstream of the mold of the press, in which the tray is filled with the powders, and a loading station at the press, in which the tray and the grid are aligned and superimposed on the recesses of the female part of the mold.
  • the tray and the grid are open in a downward region and rest on a sliding surface, which is co-planar to the plane of the press.
  • the tray After filling the tray with a predefined quantity of powder, the tray is subjected to a translational motion from the feeder station toward the loading station while the upper male plugs of the mold are kept raised and the lower complementary male plugs are kept in a configuration that is raised to the same level as the plane of the press, so as to constitute a continuous sliding surface for the tray of the movable carriage.
  • the complementary male plugs are lowered, thus forming molding chambers, which are filled by the powder that falls from the grid.
  • loading devices comprise a movable carriage that has, instead of a tray, a motorized conveyor belt on which a specific amount of powder is deposited.
  • the carriage performs a translational motion toward the loading station, placing the stationary belt above the recesses of the mold, and then returns to the feeder station: during this last stroke, the belt is actuated so as to move in order to release the powder into the recesses of the mold.
  • the above described devices allow to obtain ceramic articles constituted by a single layer of material.
  • the so-called double-loading devices are known, which allow to obtain articles having two superimposed layers, of which, for example, the lower one constitutes the body and the upper one constitutes the decoration.
  • These devices include those constituted by a main tray for containing the powder for molding the body of the tiles, in front of which an auxiliary tray for containing the powders for molding the decorative layer of the tiles is provided.
  • the two trays are supported by a same movable carriage and can be moved mutually closer or further apart.
  • the carriage is subjected to a translational motion toward the loading station, so that the main tray is aligned and superimposed with respect to the recesses of the mold and the auxiliary tray is arranged downstream of said recesses.
  • the main tray once the powder has fallen into the underlying chambers, retracts empty toward the feeder station; then the auxiliary tray also retracts and, during this retraction, deposits a second layer of powder onto the first one loaded earlier.
  • the aim of the present invention is to eliminate the above noted drawbacks of known devices, by providing a method and a corresponding device for loading material into a mold for pressing ceramic articles, which allow to reduce the time required to perform loading and to speed up and increase production.
  • an object of the present invention is to achieve the above aim with a structure that is simple, relatively easy to provide in practice, safe in use, effective in operation, and relatively low in cost.
  • the present method for loading material into a mold for pressing ceramic articles characterized in that it consists in depositing the material into a containment tray and on the upper portion of at least one motorized conveyor belt arranged in front of said tray; in causing the simultaneous advancement of said tray and of said belt, which is kept stationary, above the mold, moving the tray so that it lies above the molding chambers of the mold and fills them by gravity, forming a first layer of material; in simultaneously retracting the tray and the stationary belt, placing said belt at the downstream edge of said chambers; and in causing the further retraction of the tray and of the belt, which is actuated so as to move, in order to release the material deposited on its upper portion into the chambers, so as to form a second layer which is superimposed on said first layer.
  • the device for loading material into a mold for pressing ceramic articles is characterized in that it comprises a frame for supporting a carriage for supporting at least one tray and at least one motorized conveyor belt arranged in front of said tray, said carriage being able to slide with a reciprocating rectilinear motion between a station for feeding the material into said tray and onto the upper portion of said belt, and a station for loading the mold, in which said tray is arranged above the molding chambers of the mold in order to fill them so as to constitute a first layer of material and said belt is kept stationary downstream of said chambers, the belt being actuated so as to move during the retraction stroke of the carriage for the release, into said chambers, of the material deposited on said belt so as to constitute a second layer superimposed on said first layer.
  • the reference numeral 1 generally designates a device for loading material into a mold for pressing ceramic articles according to the invention.
  • the device 1 is arranged upstream of a press 2 for molding ceramic tiles P, and comprises a supporting frame T with which a carriage 3 is associated; said carriage supports a tray 4, which is provided with an internal grid 5 for containing molding material M.
  • a motorized conveyor belt 6 is arranged in front of the tray 4, and its upper portion is suitable to receive a predefined quantity of molding material N.
  • the press 2 comprises a lower mold part, which is constituted by a female mold part 7, in which recesses 8 are provided which are closed downward by complementary male plugs 9 which move vertically inside said recesses 8 in order to delimit chambers 10 for molding the tiles P, and by an upper mold part, which performs a vertical translational motion and supports male plugs 11 which are suitable to press the powders loaded into the chambers 10 in order to obtain the tiles P.
  • the structure of the press 2 is shown only schematically, since it is of a conventional type.
  • the frame T comprises two mutually opposite lateral plates 12, between which the carriage 3 is guided with a reciprocating rectilinear motion by way of rectilinear guiding means and motor means of a conventional type, which are not shown; the tray 4 and the belt 6 move rigidly with the carriage 3.
  • the carriage 3 moves between a feeder station, located upstream of the press 2, for feeding the molding and/or decorative material M and N respectively into the tray 4 and onto the belt 6, and a loading station, arranged at the press 2, for loading in superimposed layers the material M and N into the chambers 10.
  • the feeder station comprises a structure, formed by the frame T, for supporting a first hopper 13, the opening of which is controlled by fluidodynamic actuators constituted by first pneumatic cylinders 14; said hopper is suitable to fill the tray 4 with a predefined amount of material M.
  • the hopper 13 is provided with vibrating means, not shown, which are suitable to facilitate the discharge of the material M into the tray 4, and is filled from above by means of a dosage tube 15, which is actuated by a first motor 16 so as to slide along a rod that lies transversely to the device 1 and is not shown.
  • the feeder station further comprises a second hopper 17, which is also provided with vibrating means, not shown, and the opening of which is controlled by fluidodynamic actuators constituted by second pneumatic cylinders 18; said second hopper is suitable to deposit the material N onto the upper portion of the belt 6.
  • the hopper 17 is divided internally in portions by partitions, which allow to distribute in a differentiated manner the material N inside it, and is filled from above by three containers 19, which are supported by a frame 20 that is actuated so as to slide along a transverse bar 21 by a motor 22 and is suitable to place the containers 19 at the various portions into which the hopper 17 is divided in order to obtain polychromatic effects.
  • Each container 19 is individually able to slide along respective straight longitudinal guides 23, which are parallel and supported by the frame 20, and is actuated so as to move by respective actuation means constituted by a third pneumatic cylinder 24.
  • each container 19 is closed, in a downward region, by a motorized roller 25 for the controlled dosage of the material N; the rollers 25 can be variously contoured.
  • Figure 2 does not show the first hopper 13 arranged above the tray 4 and the grid 5 and the second hopper 17 arranged above the belts 6 and below the containers 19.
  • the carriage 3 is provided with an auxiliary tray 26, whose opening is controlled; said auxiliary tray also has vibrating means, not shown, and is arranged in front of the belt 6 in order to contain an additional amount of molding material.
  • the device 1 comprises a pusher 27, which moves the molded tiles P away from the press 2, and a brush 28, a scraper, or the like, which is designed to clean residues of material from the pressing area.
  • the reference numeral 29 designates a sliding surface, which is co-planar to the upper surface of the female mold part 7, for the sliding of the tray 4 and of the grid 5 up to the recesses 8.
  • the device 1 ( Figure 2) comprises a plurality of belts 6a, 6b, 6c and 6d, which are arranged side by side and parallel to each other in a number that corresponds to the number of chambers 10 for the independent and possibly differentiated loading thereof.
  • the feet 30 for ground support are provided with respective wheels 31, which allow the device 1 to move toward and away from the press 2.
  • the carriage 3 is motionless in the feeder station, upstream of said press 2, in order to fill the tray 4 with the material M that exits from the first hopper 13 and deposit the material N that exits from the second hopper 17 onto the upper portion of the belts 6a, 6b, 6c, and 6d, which are actuated so as to move.
  • the feeding of the material M and N can be adjusted in various manners, in order to obtain different decorative effects thanks to the possibility to fill the hoppers 13 and 17 in a differentiated manner and thanks to the possibility to selectively distribute the material N on the belts 6, which are optionally engraved and contoured, by adjusting the speed of motion of said belts 6 and thanks to the presence of the dosage rollers 25.
  • the carriage 3 After closing the first and second hoppers 13 and 17, the carriage 3 advances toward the press 2, in the active configuration, and arranges itself, in a parked condition, in the point that lies closest to said press.
  • the male plugs 11 are lifted and the complementary male plugs 9 move upward, reaching the level of the upper surface of the female mold part 7 for the expulsion of the molded tiles P.
  • the carriage 3 then moves the tray 4 above the complementary male plugs 9 and the belts 6, which are motionless, downstream of the recesses 8.
  • the pusher 27 moves away the tiles P formed by the press 2, while the brush 28 eliminates any residues of material of the cycle that has ended.
  • the complementary male plugs 9 are lowered in order to form the molding chambers 10, which are filled by the material M that falls from the tray 4; a first layer of material is thus formed.
  • the carriage 3 is made to retract at a controlled and variable speed, while the belts 6 are actuated with a variable motion; the material N deposited on them is thus gradually distributed inside the chambers 10 in order to form a second layer which is superimposed on the first one deposited earlier.
  • the carriage 3 then repositions itself at the feeder station, where the tray 4 and the belts 6 are prepared for the subsequent cycle while the male plugs 11 are lowered in order to press the tiles P.
  • the described invention achieves the intended aim and objects, i.e. it reduces the time required for the double loading of the mold and speeds up the pressing cycle, accordingly increasing the hourly production rate.
  • the device according to the invention in fact allows to load the mold with two or more layers of material in just two strokes of the carriage, the loading means (tray, belts and auxiliary tray) being all supported by the same carriage, together with which they move rigidly.
  • the device according to the invention further allows to obtain simultaneously articles of different types and with different decorative effects, by providing, for each recess of the mold, a corresponding conveyor belt for loading and thanks to the possibility to deposit the material on said belts in a differentiated manner.

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)
EP02001018A 2001-01-24 2002-01-17 Verfahren und Vorrichtung zum Füllen einer Form zur Herstellung von keramischen Gegenständen Withdrawn EP1226912A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001MO000007A ITMO20010007A1 (it) 2001-01-24 2001-01-24 Metodo per il caricamento di materiale in uno stampo per la pressatura di manufatti ceramici, e dispositivo relativo
ITMO010007 2001-01-24

Publications (2)

Publication Number Publication Date
EP1226912A2 true EP1226912A2 (de) 2002-07-31
EP1226912A3 EP1226912A3 (de) 2003-07-02

Family

ID=11450667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001018A Withdrawn EP1226912A3 (de) 2001-01-24 2002-01-17 Verfahren und Vorrichtung zum Füllen einer Form zur Herstellung von keramischen Gegenständen

Country Status (4)

Country Link
EP (1) EP1226912A3 (de)
CN (1) CN1367071A (de)
BR (1) BR0200167A (de)
IT (1) ITMO20010007A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905563A2 (de) * 2006-09-26 2008-04-02 L.B. Officine Meccaniche S.p.A. Vorrichtung zum Füllen eines Pressformhohlraumes mit einem pulverförmigen Material, sowie eine durch Pressen des pulverförmigen Materials hergestellte Platte
ITMI20131429A1 (it) * 2013-09-02 2015-03-03 Emar Srl Stazione e metodo per il caricamento multiplo di presse per prodotti ceramici

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2525085A1 (de) * 1974-06-07 1975-12-18 Sacmi Verfahren zur bildung von keramikgegenstaenden durch pressen von trockenen pulvern und vorrichtung zur durchfuehrung des verfahrens
EP0941826A2 (de) * 1998-03-10 1999-09-15 L.B. Officine Meccaniche S.p.A. Verfahren zur Herstellung einer dekorierten Fliese , entsprechende Vorrichtung zum Füllen der Pressformhohlräume und so hergestellte Fliese
EP1043133A2 (de) * 1999-04-02 2000-10-11 Martinelli Ettore s.r.l. Presse zum Herstellen von Fliesen mit einer Fördervorrichtung für zwei Materialschichten
EP1043134A2 (de) * 1999-04-09 2000-10-11 Marazzi Gruppo Ceramiche S.p.A. Verfahren , Fördervorrichtung und Presse zum Herstellen von Fliesen mit Maserungen oder Streifen
EP1097911A2 (de) * 1999-11-05 2001-05-09 Lo Scalino S.R.L. Verzierte keramische Fliesen, Vorrichtung und Verfahren zu deren Dekoration

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2525085A1 (de) * 1974-06-07 1975-12-18 Sacmi Verfahren zur bildung von keramikgegenstaenden durch pressen von trockenen pulvern und vorrichtung zur durchfuehrung des verfahrens
EP0941826A2 (de) * 1998-03-10 1999-09-15 L.B. Officine Meccaniche S.p.A. Verfahren zur Herstellung einer dekorierten Fliese , entsprechende Vorrichtung zum Füllen der Pressformhohlräume und so hergestellte Fliese
EP1043133A2 (de) * 1999-04-02 2000-10-11 Martinelli Ettore s.r.l. Presse zum Herstellen von Fliesen mit einer Fördervorrichtung für zwei Materialschichten
EP1043134A2 (de) * 1999-04-09 2000-10-11 Marazzi Gruppo Ceramiche S.p.A. Verfahren , Fördervorrichtung und Presse zum Herstellen von Fliesen mit Maserungen oder Streifen
EP1097911A2 (de) * 1999-11-05 2001-05-09 Lo Scalino S.R.L. Verzierte keramische Fliesen, Vorrichtung und Verfahren zu deren Dekoration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905563A2 (de) * 2006-09-26 2008-04-02 L.B. Officine Meccaniche S.p.A. Vorrichtung zum Füllen eines Pressformhohlraumes mit einem pulverförmigen Material, sowie eine durch Pressen des pulverförmigen Materials hergestellte Platte
EP1905563A3 (de) * 2006-09-26 2011-02-09 L.B. Officine Meccaniche S.p.A. Vorrichtung zum Füllen eines Pressformhohlraumes mit einem pulverförmigen Material, sowie eine durch Pressen des pulverförmigen Materials hergestellte Platte
ITMI20131429A1 (it) * 2013-09-02 2015-03-03 Emar Srl Stazione e metodo per il caricamento multiplo di presse per prodotti ceramici

Also Published As

Publication number Publication date
ITMO20010007A1 (it) 2002-07-24
CN1367071A (zh) 2002-09-04
BR0200167A (pt) 2002-10-22
EP1226912A3 (de) 2003-07-02
ITMO20010007A0 (it) 2001-01-24

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