EP1669177B1 - Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten - Google Patents

Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten Download PDF

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Publication number
EP1669177B1
EP1669177B1 EP05077747.3A EP05077747A EP1669177B1 EP 1669177 B1 EP1669177 B1 EP 1669177B1 EP 05077747 A EP05077747 A EP 05077747A EP 1669177 B1 EP1669177 B1 EP 1669177B1
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EP
European Patent Office
Prior art keywords
belt
pressing
plant according
strip
containment walls
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.)
Active
Application number
EP05077747.3A
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English (en)
French (fr)
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EP1669177A3 (de
EP1669177A2 (de
Inventor
Alessandro Cocquio
Silvano Valli
Alan Babini
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
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Sacmi Imola SC
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Publication date
Application filed by Sacmi Imola SC filed Critical Sacmi Imola SC
Priority to PL05077747T priority Critical patent/PL1669177T3/pl
Publication of EP1669177A2 publication Critical patent/EP1669177A2/de
Publication of EP1669177A3 publication Critical patent/EP1669177A3/de
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Publication of EP1669177B1 publication Critical patent/EP1669177B1/de
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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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/123—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material in moulds or on moulding surfaces moving continuously underneath or between the rollers, e.g. on an endless belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band

Definitions

  • the present invention concerns, in general, a plant for manufacturing ceramic tiles or slabs, and in particular a plant for forming the aforementioned slabs.
  • Plants for forming ceramic slabs comprise a conveyor belt suitable for making a continuous strip of powdered ceramic material advance through a pressing station, which is equipped with two motorised compacting devices one on top of the other that allow the powders to be continuously pressed on the belt that advances in the station, to obtain an article of coherent material.
  • said article is trimmed at the edges and possibly divided into tesserae that, according to the degree of pressing to which the powders on the belt are subjected, can make the end tiles, or else a group of precompacted slabs that will have to be subjected to a second pressing.
  • WO 98/23424 discloses a plant for forming ceramic products such as tiles having a conveyor belt on which a continuous strip of powdered ceramic material is created by suitable compacting devices that allow said strip of powders on the belt to be subjected to continuous pressing to obtain a coherent article of compacted powders.
  • the plant comprises means that allow the lateral containment of the material on the belt, whereby said means comprise one pair of parallel elastomeric containment walls, mobile with the belt, between which the powdered material is contained.
  • Said containment walls are substantially vertical due to the action of lateral control means that avoid them to deform outwardly during pressing. Therefore, during pressing, the walls are substantially vertical and when not subject to the lateral control means have wide apart shape towards the outside of the belt conveyor means in such a way to help delivery of the ceramic layer.
  • the pressing stations of known plants also comprise means suitable for controlling the spontaneous expansion of the strip of compacted powders, downstream of the compacting devices, to avoid the occurrence of cracks and/or splits, and means suitable for laterally containing the powdered material on the conveyor belt.
  • said lateral containment means substantially consist of two longitudinal walls that, parallel to each other and arranged above the conveyor belt along the advancing direction, accompany the powders from their deposition on the belt, during the pressing step, in which they are also squashed by said compacting devices, until the end of the expansion step.
  • Said containment walls have the sides facing each other substantially flat and perpendicular to the advancing plane defined by the conveyor belt, are mobile at the same speed as it, and are elastically deformable so as not to significantly oppose the action of the compacting devices, ensuring that the pressure exerted by them at the edges of the strip of powdered ceramic material is the same as that exerted at its centre.
  • the interfacing sides of the containment walls are also subjected to lateral thrusts caused by the ceramic material being compacted, which make said walls assume a substantially curved transversal profile with concavity facing towards the material itself.
  • the longitudinal edges of the compacted article interfere with the containment walls that tend to reposition themselves in the non-deformed configuration, which consequently subject the article itself to compression stresses that generate cracks or splits in it.
  • the purpose of the present invention is that of preventing the occurrence of the aforementioned cracks and/or splits, so that the useful portion of compacted material is as big as possible, and so that the waste is kept to the minimum.
  • Such a purpose is accomplished through a plant for forming ceramic tiles or slabs according to claim 1.
  • each of said sides of the containment walls are inclined with respect to the plane of the conveyor belt, so that the tangent to its profile, at any point of its profile, forms an acute angle with the plane of the conveyor belt facing towards the strip of powdered material.
  • the plant 1 which comprises a motorised conveyor belt 2 on which, through normal devices, not illustrated since they are per se known, a continuous strip 100 of powders is deposited.
  • the belt 2 crosses a pressing station 3 that has the function of pressing the powders of the strip 100 to obtain an article, substantially parallelepiped in shape, of coherent material.
  • Such an article can possibly then be decorated and then divided into tesserae of suitable size according to the size of end product that one wishes to obtain, which can be subjected to a second pressing step.
  • the pressing station 3 comprises two compacting devices 4 and 5, motorised and one on top of the other, the first of which is arranged below the belt 2, and the second above it at a height from the belt 2 that can be adjusted according to the thickness of the strip 100 of powders to be compacted, as well as the pressure value at which one wishes to carry out the pressing.
  • Each of the compactors 4 and 5 is provided with a motorised roller and an idle roller, respectively indicated with reference numerals 40, 41 and 50, 51, on which a respective belt 42, 52 is wound.
  • a roller conveyor 43 and 53 is arranged, consisting of a plurality of idle rollers that have the function of keeping the belts 42 and 52 pressed to press the strip 100 of powdered material.
  • the roller conveyor 53 is inclined in the direction in which the belt 2 advances so as to make the compacting of the powders of the strip 100 gradual.
  • rollers 6 and 7 Downstream of the roller conveyors 43 and 53 there are two opposite rollers 6 and 7, of which the roller 6 is arranged below the belt 42, whereas the roller 7 is arranged above the belt 52, and presses the latter against the strip 100 of powders that advance on the belt 2.
  • the rollers 6 and 7 define the pressing area of the strip 100 of powders, downstream of which there is a decompression area in which the strip of powders expands, thanks to suitable means, in a controlled manner to avoid the occurrence of cracks or splits in the compacted article.
  • said decompression area comprises two overlapping plates 16 and 17, the bottom one of which 17 is arranged below the belt 2 and the top one of which 16 is arranged above the belt 2, and in greater detail in contact with the belt 52.
  • the pressing station 3 also comprises lateral containment means of the strip 100 of powders, which, in the illustrated embodiment, are made through two belts 8 and 9 associated with the compacting device 5 (see also fig. 2 ).
  • Each of the two belts is indeed partially wound on the compacting devices 5 and on idler wheels 101, 102 and 103 (see fig. 1 ). It should be specified that said idler wheels are with adjustable gage, so as to be able to vary the size of the strip of compacted powders in the direction perpendicular to that in which the belt 2 advances according to the format that one wishes to obtain.
  • said belts 8 and 9 in the portion in which they are in contact with the belt 2, make a pair of parallel containment walls that, arranged along the direction in which the belt 2 itself advances, are suitable for laterally containing the powders of the strip 100.
  • the belts 8 and 9 are able to slide at the same speed as the conveyor belt 2 and, as can be seen in figure 1 , follow the powders before, during and after the pressing step, until the end of the subsequent expansion step.
  • the pressing step they are subjected, together with the strip 100 of powdered material, to the action of the roller conveyors 43 and 53, and of the rollers 6 and 7 (see also fig. 2 ).
  • the belts 8 and 9 define a sufficiently strong lateral support to ensure a good compacting of the strip 100 of powders also at the longitudinal edges and, at the same time, elastically deform in the vertical direction without offering excessive resistance to the action of the compactors 4 and 5, ensuring the substantial uniformity of the pressure exerted by them on the entire mass of powders of the strip 100.
  • the two belts 8 and 9 are made from a material capable of squashing in the pressing area between the compactors 4 and 5, of expanding in the decompression area, and of going back into the non-deformed position in the other portions.
  • the cross section of the belts 8 and 9 is configured so that, after pressing, during the expansion step, the belts cannot interfere with the longitudinal edges of the compacted article and, instead help their linear expansion in width and height, i.e. in the two directions perpendicular to the direction in which the conveyor belt 2 advances.
  • said article is prevented from being subjected to compression stresses that would generate cracks and/or splits and, therefore, the wastage of material is minimal.
  • the interfacing sides 80 and 90, respectively of the belt 8 and 9 are inclined with respect to the plane of the conveyor belt 2. More specifically, said sides 80 and 90 are inclined so that the tangent to their transversal profile, at any point thereof, forms an acute angle ⁇ with the plane of the conveyor belt facing towards the strip 100 of powders. In this way, in particular, said sides converge upwards, i.e. in the direction in which the vertical expansion of the strip takes place, in a preferential way, after pressing.
  • each of said interfacing sides 80 and 90 assumes a concave profile that gives the edge of the compacted strip a corresponding curved profile, which, as can be seen in figure 3c , does not interfere in any way with the belt when, during the expansion step, it goes back into the non-deformed position.
  • the profile of the side 80 of the belt 8 facing the belt 9 is a rectilinear segment inclined with respect to the plane of the conveyor belt 2 to form an acute angle facing towards the strip 100 of powders; however it should be specified that said profile can, in general, consist of rectilinear portions, curvilinear portion, or combinations thereof.
  • profiles are shown that can be given to the interfacing sides of the belts 8 and 9 without departing from the scope of the finding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Producing Shaped Articles From Materials (AREA)

Claims (9)

  1. Anlage, die zum Bilden von Keramikkacheln oder -fliesen geeignet ist und Folgendes umfasst: ein Transportband (2), auf dem ein durchgehender Streifen (100) aus pulverförmigem Keramikmaterial erzeugt wird, Verdichtungsvorrichtungen (4, 5), die es ermöglichen, dass der Streifen (100) aus Pulvern auf dem Band (2) einem kontinuierlichen Pressen unterzogen wird, um einen kohärenten Gegenstand aus verdichteten Pulvern zu erzielen, und Mittel, welche die seitliche Eingrenzung des Materials auf dem Band ermöglichen, wobei die Mittel mindestens ein Paar paralleler, elastisch verformbarer Eingrenzungswände (8, 9) umfassen, die sich mit dem Band bewegen und zwischen denen das pulverförmige Material vor, während und nach dem Pressen eingegrenzt ist,
    wobei die Grenzflächenseiten (80, 90) der Eingrenzungswände (8, 9) in einer ersten Betriebsposition vor dem Pressen im Verhältnis zur Ebene des Transportbandes geneigt sind, dadurch gekennzeichnet, dass die Grenzflächenseiten (80, 90) in einer zweiten Betriebsposition unter vertikalem Pressen der Verdichtungsvorrichtungen (4, 5) ein konkaves Profil einnehmen, so dass sie nach dem Pressen nicht störend auf den Gegenstand aus verdichteten Pulvern einwirken, so dass in diesem keine Spannungen erzeugt werden, die ihn beschädigen könnten.
  2. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass jede der Seiten (80, 90) der Eingrenzungswände derart geneigt ist, dass die Tangente ihres Querprofils an jedem ihrer Punkte einen spitzen Winkel (α) zur Ebene des Transportbandes bildet, der sich zum Streifen aus pulverförmigem Material hin öffnet.
  3. Anlage nach Anspruch 2, dadurch gekennzeichnet, dass der Winkel (α) stets zwischen 40° und 89° beträgt.
  4. Anlage nach Anspruch 2, dadurch gekennzeichnet, dass das Querprofil der Grenzflächenseiten (80, 90) der Eingrenzungswände mindestens einen rechtwinkligen Abschnitt umfasst.
  5. Anlage nach Anspruch 2, dadurch gekennzeichnet, dass das Querprofil der Grenzflächenseiten (80, 90) der Eingrenzungswände gekrümmt ist.
  6. Anlage nach Anspruch 2, dadurch gekennzeichnet, dass das Querprofil der Grenzflächenseiten (80, 90) der Eingrenzungswände gemischt linear ist, d. h. eine Kombination aus geradlinigen und gekrümmten Abschnitten umfasst.
  7. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass die Eingrenzungswände aus parallelen, gleitenden Bändern (8, 9) bestehen.
  8. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass jede Verdichtungsvorrichtung (4, 5) mindestens eine motorisierte Walze (40 und 50) umfasst und dass die Bänder (8, 9) teilweise um mindestens eine der Verdichtungsvorrichtungen (4, 5) gewickelt sind und mit der gleichen Geschwindigkeit wie das Transportband (2) laufen.
  9. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass die Bänder (8, 9) aus einem elastisch verformbaren Material bestehen.
EP05077747.3A 2004-12-10 2005-12-01 Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten Active EP1669177B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05077747T PL1669177T3 (pl) 2004-12-10 2005-12-01 Udoskonalona instalacja do formowania ceramicznych płytek lub płyt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000150A ITRE20040150A1 (it) 2004-12-10 2004-12-10 Impianto perfezionato per la formatura di lastre o piastrelle ceramiche

Publications (3)

Publication Number Publication Date
EP1669177A2 EP1669177A2 (de) 2006-06-14
EP1669177A3 EP1669177A3 (de) 2006-11-08
EP1669177B1 true EP1669177B1 (de) 2014-08-27

Family

ID=36050498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077747.3A Active EP1669177B1 (de) 2004-12-10 2005-12-01 Verbesserte Anlage zur Herstellung von keramischen Fliesen oder Platten

Country Status (7)

Country Link
EP (1) EP1669177B1 (de)
CN (1) CN1785632B (de)
ES (1) ES2523165T3 (de)
IT (1) ITRE20040150A1 (de)
PL (1) PL1669177T3 (de)
PT (1) PT1669177E (de)
RU (1) RU2385802C2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRE20110081A1 (it) * 2011-10-07 2013-04-08 Sacmi Dispositivo e metodo per il trattamento di uno strato di materiale in polvere
ITUA20162412A1 (it) * 2016-04-08 2017-10-08 System Spa Elemento di formatura per manufatti ceramici
ITUB20155626A1 (it) * 2015-11-16 2017-05-16 System Spa Elemento di formatura per manufatti ceramici
WO2017085597A1 (en) * 2015-11-16 2017-05-26 System S.P.A. A forming element for ceramic articles
ITUB20160504A1 (it) * 2016-01-15 2017-07-15 System Spa Compensatore di formato per un dispositivo di pressatura
ITUA20161363A1 (it) * 2016-03-04 2017-09-04 System Spa Dispositivo di pressatura
ITUA20164452A1 (it) * 2016-06-16 2017-12-16 System Spa Dispositivo compattatore per la pressatura di manufatti ceramici
CN106079037A (zh) * 2016-07-29 2016-11-09 徐春雷 一种压实固体疏松物料以成型板坯的装置及方法
IT201600093579A1 (it) 2016-09-16 2018-03-16 Sacmi Metodo e apparato per la formatura di manufatti di polveri compattate
IT201600105117A1 (it) * 2016-10-19 2018-04-19 Sacmi Macchina per la compattazione di materiale in polvere
IT201800007737A1 (it) * 2018-08-01 2020-02-01 Sacmi Cooperativa Mecc Imola Societa' Cooperativa Metodo per la compattazione di materiale in polvere
CN113634313A (zh) * 2021-08-18 2021-11-12 科达制造股份有限公司 一种陶瓷辊压设备
CN113634312A (zh) * 2021-08-18 2021-11-12 科达制造股份有限公司 一种陶瓷辊压设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198393A (en) * 1967-05-26 1970-07-15 Hennecke G M B H Formerly Know Apparatus for the continuous production of rigid plastics foam panels, in particular based on polyurethane, laminated with rigid convering layers
CH518727A (de) * 1968-07-02 1972-02-15 Gujer Hans Vorrichtung zum Abdichten des Filterraumes zwischen zwei Filterflächen, insbesondere zwei umlaufenden Filterbändern
SE408537B (sv) * 1974-05-24 1979-06-18 Kuesters Eduard Sidoavtetning for pressomradet vid en press for ytpressning
GB2277707B (en) * 1993-04-29 1996-07-03 Redland Technology Ltd Improvements in a roof tile making machine
IT1287505B1 (it) 1996-11-22 1998-08-06 Algeri Maris Metodo e mezzi per la pressatura di piastrelle ceramiche.
ITMI20010153A1 (it) * 2001-01-29 2002-07-29 Mauro Comastri S R L Macchina per compattare polveri a pressatura lineare
ITRE20020035A1 (it) * 2002-04-24 2003-10-24 Sacmi Metodo ed impianto per la formatura di lastre o piastrelle ceramiche

Also Published As

Publication number Publication date
ES2523165T3 (es) 2014-11-21
CN1785632B (zh) 2010-09-15
CN1785632A (zh) 2006-06-14
ITRE20040150A1 (it) 2005-03-10
PL1669177T3 (pl) 2015-03-31
RU2005137234A (ru) 2007-06-10
EP1669177A3 (de) 2006-11-08
EP1669177A2 (de) 2006-06-14
PT1669177E (pt) 2014-11-14
RU2385802C2 (ru) 2010-04-10

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