EP1247629A2 - Dispositif pour la fabrication de carreaux - Google Patents

Dispositif pour la fabrication de carreaux Download PDF

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Publication number
EP1247629A2
EP1247629A2 EP02007134A EP02007134A EP1247629A2 EP 1247629 A2 EP1247629 A2 EP 1247629A2 EP 02007134 A EP02007134 A EP 02007134A EP 02007134 A EP02007134 A EP 02007134A EP 1247629 A2 EP1247629 A2 EP 1247629A2
Authority
EP
European Patent Office
Prior art keywords
roller
screen
actuating
peg
tubular element
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Withdrawn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
EP02007134A
Other languages
German (de)
English (en)
Other versions
EP1247629A3 (fr
Inventor
Giancarlo Fiandri
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.)
Tecno Europa SRL
Original Assignee
Tecno Europa 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 Tecno Europa SRL filed Critical Tecno Europa SRL
Publication of EP1247629A2 publication Critical patent/EP1247629A2/fr
Publication of EP1247629A3 publication Critical patent/EP1247629A3/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Withdrawn legal-status Critical Current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

Definitions

  • the invention concerns an apparatus for forming tiles by pressing ceramic powders and, more in particular, for forming tiles composed of a base layer and of decorative material distributed on the base layer.
  • Italian patent application n. MO99A000141 discloses an apparatus for forming tiles, comprising transfer means provided with cells that are open at the top and bottom for being filled with basic ceramic material and pouring said basic ceramic material into cavities of a ceramic mould, and flexible screen means provided with openings that enable a flowing decorative material to pass through them, the screen means being supported by winding means on said carriage transfer means.
  • the screen means comprise a lamina, the ends of which are coupled with support rollers with which said winding means are provided. Said support rollers are rotatably coupled to the transfer means, the rotation of said support rollers being contrasted by return springs.
  • the lamina is unwound from one of the rollers and is wound onto the other roller, or vice versa, at each passing through, thereby ensuring that the openings of the lamina go underneath container means of the decorative material and allow particles of decorative material to exit from the container means.
  • the lamina is actuated by a shaft on which a pair of wheels is fitted, the edge of said wheels being provided with dragging pegs engaged in holes obtained in side strips of the lamina.
  • the apparatus further comprises synchronising means suitable for synchronising the screen means with the transfer means.
  • the synchronising means comprise mechanical actuating means that control the rotation of the above-mentioned shaft, thus being suitable for synchronising the sliding speed of the lamina underneath the container means with the translation speed of the carriage means.
  • a drawback of the apparatus described above is that, during actuating of the screen means by the wheels the holes obtained in the lamina tend to deteriorate when the pegs disengage from them; this drawback is aggravated when the lamina is made of a material with limited mechanical resistance, for example, of an elastomer.
  • a further drawback of the above apparatus is that the synchronising means are rather complicated as they comprise a large number of mechanical parts mutually interacting to adjust the sliding speed of the lamina. This makes the construction of the apparatus somewhat complicated and may cause operating faults that will limit the productivity of the apparatus.
  • An object of the present invention is to improve the known apparatus for forming tiles.
  • Another object of the invention is to obtain an apparatus for forming tiles that enables tiles to be obtained that have a decoration on their visible face that is clear and well defined.
  • a further object of the invention is to obtain an apparatus for forming ceramic tiles that is highly reliable and productive.
  • a still further object of the invention is to obtain an apparatus for decorating ceramic tiles that has a significantly simple construction.
  • an apparatus for depositing a flowing material on a support, comprising flexible screen means provided with openings through which said flowing material flows and preferably transfer means on which said screen means are supported by winding means, characterised in that it further comprises actuating means suitable for actuating said screen means independently, in particular, from said transfer means.
  • the actuating means comprise a motor arranged for actuating a driving shaft on which a pair of wheels is fitted, each of said wheels being provided with pegs that protrude from an external surface of the wheels to engage in holes obtained in end areas of the screen means.
  • this motor can be a stepper motor or a brushless motor.
  • the actuating means can be associated with an electronic driving and controlling device that is suitable for detecting the translation speed of the transfer means and therefore controlling the rotation speed of said driving shaft.
  • the pegs can be retracted inside the wheels in order not to interfere with the respective holes during disengagement from the screen means.
  • said support is a ceramic tile.
  • an apparatus 1 for feeding a ceramic press 2 that forms tiles 3 comprises transfer means 4 arranged for feeding loose ceramic material into the cavities 5 of a mould 6 of the press 2, said loose ceramic material comprising base material suitable for constituting a body of the tiles 3 to be formed and decorative material arranged for forming an ornamental pattern on the visible face of the tiles 3.
  • the transfer means 4 comprise a carriage 6 reciprocatable between a retracted position in which it receives the base material from a hopper 7 and an advanced position in which it pours said base material into the cavities 5.
  • the carriage 6 supports a pusher 8 at the front, which pusher pushes the tiles 3 that have already been formed and ejected from the cavities 5 towards an evacuation line 9 and comprises a grid 10 that defines a plurality of cells arranged for containing the base material during transferring.
  • a container 11 is provided into which the decorative material is poured from a further hopper 12, fixed and arranged to be above the container 11 when the carriage 6 is in the loading position of the grid 10, in other words when the grid 10 is arranged below the hopper 7.
  • the container 11 can be divided into different noncommunicating compartments, or be replaced by a plurality of independent containers, each one of which is arranged for containing a decorative material with a particular colour and/or granulometry.
  • the container 11 is internally provided with sides 13 that converge downwards to promote the further descent of the decorative material towards a body 33 of said container 11.
  • Said body 33 consists of a tubular element 34 welded to the sides 13, open at the top and provided at the bottom with an outlet 12 located at the lower part of the container 11, said lower part having an external rounded profile on which the screen means 14 are wound.
  • a shutter 30 is inserted inside the body 33 comprising a further tubular element 31 that is coaxial to the tubular element 34 and rotatable around its longitudinal axis through a pneumatic actuator that is not shown.
  • the shutter 31 is provided with a further outlet 32 that, in a distributing position in which it is aligned on the outlet 12, enables the decorative material to exit from the container 11 to interact with the screen means 14.
  • the further tubular element 31 closes the opening 12 to prevent the transfer of the decorative material through it and to allow the transfer of the screen means 14 without any undesired exit of decorative material from container 11 occurring.
  • the screen means 14 comprise a lamina 15 in which openings 16 are obtained, consisting, for example, of a plurality of through microholes that define a decorative pattern 17 to be obtained on the visible face of the tiles 3 to be formed.
  • the lamina 15 acts therefore as control means of the exit of the decorative material from the outlet 12.
  • the decorative pattern 17 can be formed by a plurality of designs, or incisions, that are the same as one another or different from one another, said designs, or incisions, corresponding to the plurality of cavities 5 of the mould 6 of the press 2.
  • the lamina 15 has a first end that is coupled with a first support roller 18a, and a second end coupled with a second support roller 18b, the first roller 18a and the second roller 18b being rotatably coupled with the carriage 6.
  • the first roller 18a and the second roller 18b are provided with elastic return means arranged for inducing the lamina 15 to wind on each of said support rollers as indicated by arrows F1 and F2 respectively, to tension the lamina means 15 so enabling an optimal transfer of the decorative material.
  • the apparatus 1 further comprises actuating means 19 arranged for moving the lamina 15 to overcome the resistance of the elastic return means: during operation the lamina 15 is in fact unwound from one of the support rollers, for example the second roller 18b, and is wound onto the other support roller, for example the first roller 18a, or vice versa, the openings 16 of the lamina 15 thus pass underneath the outlet 12 and let particles of decorative material pass through said outlet 12.
  • actuating means 19 arranged for moving the lamina 15 to overcome the resistance of the elastic return means: during operation the lamina 15 is in fact unwound from one of the support rollers, for example the second roller 18b, and is wound onto the other support roller, for example the first roller 18a, or vice versa, the openings 16 of the lamina 15 thus pass underneath the outlet 12 and let particles of decorative material pass through said outlet 12.
  • the actuating means 19 comprise a motor 20, for example a stepper motor, that actuates a shaft 21 that passes through the container 11 and on which a pair of wheels 22 is fitted said wheels being peripherally provided with dragging pegs 23 engaged in holes 24 obtained in side strips of the lamina 15.
  • the pegs 23 have a rounded end 29 and are preferably retractable inside the wheels 22: in each one of said wheels there is in fact a plurality of seats 25 arranged for receiving said pegs 23 in a position of non-interference with the holes 24.
  • Pressing roller means 26 are associated with the wheels 22, said pressing roller means 26 are arranged for interacting with the pegs 23 and cause them to retract inside the respective seats 25 after overcoming the resistance of contrast springs 27 positioned inside the seats 25 and interacting with an end of the pegs 23.
  • the pressing roller means 26 are rotatably supported to first support means 28a, or second support means 28b, movable in the direction indicated by the arrow F4, which first support means 28a and second support means 28b enable the pressing roller means 26 to be brought up to or to be taken away from the wheels 22 to adjust the interaction between the pegs 23 and the pressing roller means 26.
  • the lamina 15 moves in the direction shown by the arrow F3 and is unwound from the second roller 18b to be wound onto the first roller 18a.
  • the pressing roller means 26 are fitted onto the first support means 28a and are therefore positioned in the area of the wheel 22 nearest the first roller 18a, in such a way as to facilitate the disengagement from the holes 24 of the pegs 23 when the lamina 15 is detached from the wheels 22: this prevents deformation of the holes 24 and limits the risk of breakage of the lamina 15, thereby prolonging working life thereof.
  • the contrast roller means 26 have to be fitted on the first support means 28b.
  • the apparatus 1 also comprises an electronic driving and controlling device such as an encoder that detects the translation speed of the carriage and therefore controls the rotation of the shaft 21 to synchronise the sliding speed of the lamina 15 underneath the container 11 with the transfer speed of the carriage 6, thereby enabling optimal exiting of the decorative material from the container 11 to obtain tiles 3 that have a clear and well-defined design on their visible surface.
  • an electronic driving and controlling device such as an encoder that detects the translation speed of the carriage and therefore controls the rotation of the shaft 21 to synchronise the sliding speed of the lamina 15 underneath the container 11 with the transfer speed of the carriage 6, thereby enabling optimal exiting of the decorative material from the container 11 to obtain tiles 3 that have a clear and well-defined design on their visible surface.
  • the sliding speed of the lamina 15 underneath the container 11 may be different from the translation speed of the carriage 6: in this way ceramic tiles 3 are obtained that have a decorative pattern that is "stretched” or “compressed” with respect to the dimensions of the openings 16.
  • a working cycle of the apparatus takes place in the manner described below.
  • the desired decorative pattern 17 may be chosen from those obtained on the lamina 15 and is brought near the outlet 12 of the container 8 after rotation of the shaft 21.
  • the grid 10 deposits the base material in the cavities 5.
  • the encoder detects the transfer speed of the carriage 6 and controls the rotation of the shaft 21, and subsequent movement of the lamina 15, by means of the stepper motor 20.
  • the motor 20 may be a brushless motor controlled by a signal sent by the encoder of a further brushless motor arranged for actuating the transfer means 4.
  • said encoder detects the speed of the carriage 6 of the transfer means 4 and subsequently controls the rotation of the shaft 21.
  • the apparatus is ready to form a tile 3 provided with a decorative pattern 17 that on the extension of the lamina 15 follows the one that has just been made.
  • the lamina 15 can be repositioned to repeat the same decorative pattern 17 or one of the other decorative patterns 17 incised on it.
  • the apparatus 1 also enables the lamina 15 to be easily replaced with another lamina 15 that, for example, has decorative patterns 17 that have a different conformation.

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)
  • Finishing Walls (AREA)
  • Road Paving Structures (AREA)
EP02007134A 2001-04-05 2002-03-28 Dispositif pour la fabrication de carreaux Withdrawn EP1247629A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001MO000063A ITMO20010063A1 (it) 2001-04-05 2001-04-05 Apparato per formare piastrelle
ITMO010063 2001-04-05

Publications (2)

Publication Number Publication Date
EP1247629A2 true EP1247629A2 (fr) 2002-10-09
EP1247629A3 EP1247629A3 (fr) 2003-10-08

Family

ID=11450749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007134A Withdrawn EP1247629A3 (fr) 2001-04-05 2002-03-28 Dispositif pour la fabrication de carreaux

Country Status (2)

Country Link
EP (1) EP1247629A3 (fr)
IT (1) ITMO20010063A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302289A2 (fr) * 2001-10-11 2003-04-16 Tecno - Europa S.R.L. Dispositif pour la fabrication de carreaux
EP1529614A1 (fr) 2003-11-07 2005-05-11 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Dispositif pour la décoration à sec de carreaux céramiques
CN116442355A (zh) * 2023-05-06 2023-07-18 广东兴辉陶瓷集团有限公司 仿古岩板的叠加工艺生产设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300532A1 (fr) * 1987-07-08 1989-01-25 Koninklijke Mosa B.V. Dalle de plancher en céramique, ensemble de dalles de plancher différentes les unes des autres, méthode pour la fabrication d'un ensemble de dalles de plancher et dispositif d'exécution du procédé
FR2688162A1 (fr) * 1992-03-04 1993-09-10 Demler Sa Procede pour fabriquer des elements en beton moule sous pression et appareil pour la mise en óoeuvre de ce procede.
WO1998056551A1 (fr) * 1997-06-10 1998-12-17 Alberto Franceschini Procede et installation servant a fabriquer des articles, tels que des tuiles de ceramique
EP1302289A2 (fr) * 2001-10-11 2003-04-16 Tecno - Europa S.R.L. Dispositif pour la fabrication de carreaux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300532A1 (fr) * 1987-07-08 1989-01-25 Koninklijke Mosa B.V. Dalle de plancher en céramique, ensemble de dalles de plancher différentes les unes des autres, méthode pour la fabrication d'un ensemble de dalles de plancher et dispositif d'exécution du procédé
FR2688162A1 (fr) * 1992-03-04 1993-09-10 Demler Sa Procede pour fabriquer des elements en beton moule sous pression et appareil pour la mise en óoeuvre de ce procede.
WO1998056551A1 (fr) * 1997-06-10 1998-12-17 Alberto Franceschini Procede et installation servant a fabriquer des articles, tels que des tuiles de ceramique
EP1302289A2 (fr) * 2001-10-11 2003-04-16 Tecno - Europa S.R.L. Dispositif pour la fabrication de carreaux

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302289A2 (fr) * 2001-10-11 2003-04-16 Tecno - Europa S.R.L. Dispositif pour la fabrication de carreaux
EP1302289A3 (fr) * 2001-10-11 2003-10-08 Tecno - Europa S.R.L. Dispositif pour la fabrication de carreaux
EP1529614A1 (fr) 2003-11-07 2005-05-11 SACMI COOPERATIVA MECCANICI IMOLA Soc. Coop. a r.l. Dispositif pour la décoration à sec de carreaux céramiques
CN116442355A (zh) * 2023-05-06 2023-07-18 广东兴辉陶瓷集团有限公司 仿古岩板的叠加工艺生产设备
CN116442355B (zh) * 2023-05-06 2024-01-16 广东兴辉陶瓷集团有限公司 仿古岩板的叠加工艺生产设备

Also Published As

Publication number Publication date
EP1247629A3 (fr) 2003-10-08
ITMO20010063A1 (it) 2002-10-05
ITMO20010063A0 (it) 2001-04-05

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