EP1162047B1 - Dispositif pour distribuer suivant un dessin déterminé des matériaux pulvérulents sur un support - Google Patents

Dispositif pour distribuer suivant un dessin déterminé des matériaux pulvérulents sur un support Download PDF

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Publication number
EP1162047B1
EP1162047B1 EP00202044A EP00202044A EP1162047B1 EP 1162047 B1 EP1162047 B1 EP 1162047B1 EP 00202044 A EP00202044 A EP 00202044A EP 00202044 A EP00202044 A EP 00202044A EP 1162047 B1 EP1162047 B1 EP 1162047B1
Authority
EP
European Patent Office
Prior art keywords
belt
powders
conveyor belt
pulleys
perforated
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.)
Expired - Lifetime
Application number
EP00202044A
Other languages
German (de)
English (en)
Other versions
EP1162047A1 (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
System 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 System SpA filed Critical System SpA
Priority to PT00202044T priority Critical patent/PT1162047E/pt
Priority to DE60014336T priority patent/DE60014336T2/de
Priority to EP00202044A priority patent/EP1162047B1/fr
Priority to ES00202044T priority patent/ES2225017T3/es
Publication of EP1162047A1 publication Critical patent/EP1162047A1/fr
Application granted granted Critical
Publication of EP1162047B1 publication Critical patent/EP1162047B1/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
    • B28B11/048—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by spraying or projecting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/32—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
    • 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
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
    • 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
    • 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
    • B28B11/047—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by pooring, e.g. curtain coating

Definitions

  • the invention is useful in the production of ceramic tiles.
  • a decoration on a temporary support for example on a steel belt, or canvas, or other, on which support the base powders (atomised or similar) will be spread so that the decoration is face-down.
  • Dry decoration using powders is at present done using flat silk-screening machines, similar to those used for liquid glazes, or using rotary machines which generally use cylindrical silk screens, again similar to those used with wet glazes.
  • EP 0 634 516 disclose an apparatus for distributing powders on a support in a predetermined pattern and comprises: a conveyor belt for transporting the support; an applicator head for applaying the powders located above the conveyor belt, the head comprising a belt exhibiting a plurality of perforations set out according to a predetermined pattern in order to allow passage of determined quantities of powders; means for controlled supply of the powders to the head; and a motion of the perforated belt being correlated with a motion of the conveyor belt.
  • US 2 559 543 disclose an apparatus comprising in combination, means carrying sheet material in a substantially horizontal plane, an endless elevating belt conveyor mounted thereover, means mounting the endless conveyor to vertically spaced wheel means, selected portions of the endless belt conveyor cut out, means asynchronizing the peripheral speed of the belt with the lineal rate of movement of the sheet material, means directing a failing stream of particulate material to the inner surface of the lower run of the endless belt and particle eleveting means mounted interiorly to the elevating belt conveyor.
  • WO 95/18020 discloses a silk-screen apparatus for decorating items with liquid glaze comprising a cleaning arrangement for the silk screen which comprises a water and/or cleaning solvent sprayer followed by an air jet dispenser to dry the screen and a collecting trough having an aspirator to discharge the liquid.
  • the main aim of the present invention is to provide an apparatus which distributes powders on a support according to a predefined pattern, overcoming the drawbacks inherent in the prior art.
  • the invention has the advantages of being simple as well as easy to apply on production lines.
  • 1 denotes a mobile rest plane constituted by a usual conveyor belt which supplies the supports 2, for example tiles or slabs, with a continuous straight motion.
  • An applicator head 3 is located above the conveyor belt 1, for applying the powders according to the predefined patterns onto the underlying supports 2 transiting on the conveyor belt 1.
  • the applicator head 3 comprises a moving surface, in effect a belt 4 bearing a plurality of small perforations arranged in a predefined pattern and of such dimensions that determined quantities of the powders can pass through them.
  • the moving belt 4 is in effect the equivalent of a silk screen.
  • the moving belt 4 is a ring-wound non-stretch belt supported and driven by a pair of motorized pulleys 6 which are solidly mounted coaxially on a rotation axis which is parallel to the conveyor belt 1.
  • a special laser technique is preferably used to make the holes in the moving belt 4. This laser technique enables a very high level of precision to be obtained, and a resulting high definition in the final powder distribution.
  • the ring-wound moving surface 4 is tensioned between the motorised pulley pair 6, between which pulley pair 6 a fixed support drum 11 (on which the belt 4 drags) is interposed, as is a distributor organ 7 having the task of conveying the powders to the internal side of the belt 4.
  • the belt 4 is driven by the pulleys 6 which for this purpose are externally equipped with projecting radial pins 16, which insert in special slots 14 made at equal distances in the edges of the belt 4.
  • the slots 14 are elongate in the direction of motion. In the illustrated embodiments the slots 14 are elliptical, guaranteeing optimum operating precision.
  • Special means for controlling supply of powders to the applicator head 3 comprise a powder supplier-batcher 8, located above the distributor organ 7; the supplier-batcher 8 is activated according to the level of powders inside the applicator head 3 and on the belt 4, with respect to a predetermined level.
  • the supplier-batcher 8 is activated to discharge powders internally of the applicator head 3 when the sensor system 9 signals that a lower limit has been reached, while it stops discharging powders when the sensor system 9 signals that an upper limit level has been reached.
  • the supplier-batcher 8 is constituted by a continuous conveyor belt having a step operation. Discharge of the material is done laterally by effect of rotations of the conveyor about its own longitudinal axis, which rotations are achieved between one step and the next.
  • the supplier-batcher can be constituted by a prepacked cartridge which is very easy to insert and substitute.
  • the distributor organ 7 is constituted by a doctor in the shape of a blade 17 which operates in direct contact with the internal side of the lower part of the perforated belt 4.
  • the distributor organ 7 is constituted by a sort of fixed double doctor 27 which operates in direct contact with the internal side of the lower part of the perforated belt 4 and which identifies a central chamber for containing powders, which is funnelled in a downwards direction to present a narrowed zone at which the powders are in contact with the internal side of the belt 4.
  • the distributor organ 7 is constituted by a blade rotor 37 which is mobile in rotation about an axis which is parallel to the belt 4 and the rest plane, i.e. the conveyor belt 1.
  • the various distribution organs have the aim of favouring and regularizing the downwards expulsion of the powders through the perforations made in the belt 4.
  • Cleaning the patterned perforations in the belt 4 is done continuously by a suction effect exerted on the belt 4 by a plurality of suction mouths 5 located in the upper zone of the external cylindrical surface of the fixed support drum 11, the inside of which is kept depressed.
  • Usual actuating systems are used for correlating the motion of the motorised pulleys drawing the perforated belt 4 and the supply motion of the conveyor belt 1.
  • This correlation which also involves the synchronisation of the motion of the perforated belt 4 which a centred position of each single support 2 below the applicator head 3, determines a correct deposit of the powders on the support according to a predefined pattern.
  • the invention has the advantage that deposit of the powders is done by free fall, without any contact taking place between the belt and the underlying support.
  • a further advantage of the invention lies in the fact that it enables powders to be distributed according to predefined patterns on continuous belt supports, theoretically of infinite length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)

Claims (8)

  1. Dispositif pour distribuer suivant un dessin prédéterminé des matériaux pulvérulents sur un support, comprenant:
    un tapis convoyeur (1) pour transporter le support (2);
    une tête d'application (3) pour appliquer les matériaux pulvérulents, disposée au-dessus du tapis convoyeur (1), laquelle tête (3) comprend un tapis roulant (4) présentant une pluralité de perforations disposées selon un dessin prédéterminé et étant de dimensions telles qu'elles permettent le passage de quantités prédéterminées de matériaux pulvérulents; le tapis roulant perforé (4) étant enroulé en anneau clos et étant actionné par deux poulies motorisées (6), lesquelles poulies (6) sont coaxiales et présentent un axe de rotation commun parallèle au tapis convoyeur (1);
    des moyens d'alimentation contrôlée en matériaux pulvérulents de la tête (3); et
    un mouvement du tapis roulant perforé (4) étant corrélé à un mouvement du tapis convoyeur;
    caractérisé en ce qu'il comprend:
    des moyens pneumatiques pour le nettoyage continu des perforations dans le tapis roulant perforé (4); lesdits moyens pneumatiques comprenant une pluralité de bouches aspirantes (5) disposées sur une partie supérieure d'une surface cylindrique externe d'un tambour de support fixe (11), lequel tambour (11) est positionné entre deux poulies motorisées (6) et supporte le tapis roulant perforé (4); les bouches aspirantes (5) étant directement communicantes avec l'intérieur du tambour (11) dépressurisé; ledit tapis roulant perforé (4) étant tendu entre les deux poulies motorisées coaxiales (6) et un organe de distribution (7), lequel organe de distribution (7) convoie les matériaux pulvérulents sur un côté interne du tapis roulant perforé (4).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'organe de distribution (7) est constitué d'un rotor à pales radiales (37), ou racle en étoile, mobile en rotation autour d'un axe parallèle au tapis roulant perforé (4) et au tapis convoyeur (1).
  3. Dispositif selon la revendication 2, caractérisé en ce que le rotor à pales radiales (37) pivote de manière à ce que, dans une zone de contact avec le côté interne du tapis convoyeur (1), la vitesse relative soit différente de zéro.
  4. Dispositif selon la revendication 1, caractérisé en ce que les poulies motorisées coaxiales (6) sont pourvues sur leur périphérie de broches radiales saillantes (16) qui s'insèrent dans des orifices spéciaux (14) réalisés de manière équidistante sur les bords du tapis roulant perforé (4); les orifices spéciaux (14) étant allongés dans la direction du mouvement des poulies.
  5. Dispositif selon la revendication 4, caractérisé en ce que les broches radiales saillantes (16) sont de forme elliptique.
  6. Dispositif selon la revendication 1, caractérisé en ce que les moyens d'alimentation contrôlée en matériaux pulvérulents de la tête (3) comprennent un alimentateur doseur (8) de matériaux pulvérulents, disposé au-dessus de l'organe distributeur (7), l'activation duquel alimentateur doseur (8) est commandée en fonction d'une différence du niveau de matériaux pulvérulents au-dessus du tapis roulant perforé (4) par rapport à un niveau prédéterminé.
  7. Dispositif selon la revendication 6, caractérisé en ce que l'alimentateur doseur (8) est constitué d'un tapis convoyeur continu avec mouvement pas à pas; le déchargement des matériaux pulvérulents est effectué latéralement par rotation entre un pas et l'autre du tapis autour de son axe longitudinal.
  8. Dispositif selon la revendication 6, caractérisé en ce que l'alimentateur doseur (8) est constitué d'une cartouche préemballée.
EP00202044A 2000-06-08 2000-06-08 Dispositif pour distribuer suivant un dessin déterminé des matériaux pulvérulents sur un support Expired - Lifetime EP1162047B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PT00202044T PT1162047E (pt) 2000-06-08 2000-06-08 Um aparelho destinado a distribuir materiais em po sobre um suporte segundo um desenho previamente determinado
DE60014336T DE60014336T2 (de) 2000-06-08 2000-06-08 Vorrichtung zum Verteilen von pülverförmigen Materialen in einem vorherbestimmten Muster auf einen Träger
EP00202044A EP1162047B1 (fr) 2000-06-08 2000-06-08 Dispositif pour distribuer suivant un dessin déterminé des matériaux pulvérulents sur un support
ES00202044T ES2225017T3 (es) 2000-06-08 2000-06-08 Aparato para distribuir polvos sobre un soporte segun un modelo predefinido.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00202044A EP1162047B1 (fr) 2000-06-08 2000-06-08 Dispositif pour distribuer suivant un dessin déterminé des matériaux pulvérulents sur un support

Publications (2)

Publication Number Publication Date
EP1162047A1 EP1162047A1 (fr) 2001-12-12
EP1162047B1 true EP1162047B1 (fr) 2004-09-29

Family

ID=8171621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202044A Expired - Lifetime EP1162047B1 (fr) 2000-06-08 2000-06-08 Dispositif pour distribuer suivant un dessin déterminé des matériaux pulvérulents sur un support

Country Status (4)

Country Link
EP (1) EP1162047B1 (fr)
DE (1) DE60014336T2 (fr)
ES (1) ES2225017T3 (fr)
PT (1) PT1162047E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100469546C (zh) * 2002-09-30 2009-03-18 系统股份公司 用于将粉料以预定图案分配到支承件上的设备

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20020142A1 (it) * 2002-05-24 2003-11-24 Alberto Franceschini Apparato per la produzione di piastrelle ceramiche decorate e metodo relativo
MX2008010743A (es) 2006-02-21 2008-09-01 System Spa Decoracion con material pulverizado.
ITMO20080007A1 (it) * 2008-01-11 2009-07-12 F M Srl Dispositivo di stesura per fluidi, in particolare per smalti.
US9790343B2 (en) 2008-06-12 2017-10-17 Avery Dennison Corporation Porous material and method for producing the same
EP3178568B1 (fr) * 2012-08-21 2019-07-17 Avery Dennison Corporation Procédé de distribution particulaire
EP2888059B1 (fr) 2012-08-21 2018-10-10 Avery Dennison Corporation Système pour réaliser des films, des fibres, des sphères et d'autres articles poreux
US9504550B2 (en) 2014-06-26 2016-11-29 Vertera, Inc. Porous devices and processes for producing same
US9498922B2 (en) 2014-06-26 2016-11-22 Vertera, Inc. Apparatus and process for producing porous devices
US9517593B2 (en) 2014-06-26 2016-12-13 Vertera, Inc. Apparatus and process for producing porous devices
US9085665B1 (en) 2014-12-31 2015-07-21 Vertera, Inc. Method for producing porous material
USD815281S1 (en) 2015-06-23 2018-04-10 Vertera, Inc. Cervical interbody fusion device
IT201600122474A1 (it) * 2016-12-02 2018-06-02 Carpress Srl Macchina per la decorazione di un supporto realizzato in terra, impianto e metodo per la fabbricazione di supporti decorati.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559543A (en) * 1948-07-10 1951-07-03 Celotex Corp Apparatus for the manufacture of brick siding
CA1218622A (fr) * 1984-11-30 1987-03-03 Julius S. Csabai Dispositif degarnisseur de courroie transporteuse
JPS6327314A (ja) * 1986-07-16 1988-02-05 Nitta Kk 搬送用ベルトの横ずれ防止装置
FR2707531B1 (fr) * 1993-07-13 1995-08-18 Taraflex Procédé pour la réalisation de revêtements, pour sol notamment, à partir de matière plastique, et installation pour sa mise en Óoeuvre.
EP0738215A1 (fr) * 1993-12-24 1996-10-23 Carlo Antonio Camorani Procede serigraphique destine a la decoration d'articles, et appareil associe
IT1287465B1 (it) * 1996-07-29 1998-08-06 Syfal Srl Macchina rotativa per la smaltatura, in particolare di piastrelle ceramiche

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100469546C (zh) * 2002-09-30 2009-03-18 系统股份公司 用于将粉料以预定图案分配到支承件上的设备

Also Published As

Publication number Publication date
PT1162047E (pt) 2004-12-31
EP1162047A1 (fr) 2001-12-12
DE60014336T2 (de) 2005-10-13
DE60014336D1 (de) 2004-11-04
ES2225017T3 (es) 2005-03-16

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