EP0277867A1 - Device for the self-alignment of ceramic tiles during their firing cycle in a brick oven with rollers - Google Patents
Device for the self-alignment of ceramic tiles during their firing cycle in a brick oven with rollers Download PDFInfo
- Publication number
- EP0277867A1 EP0277867A1 EP88400141A EP88400141A EP0277867A1 EP 0277867 A1 EP0277867 A1 EP 0277867A1 EP 88400141 A EP88400141 A EP 88400141A EP 88400141 A EP88400141 A EP 88400141A EP 0277867 A1 EP0277867 A1 EP 0277867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reliefs
- rollers
- tile according
- ceramic tile
- tile
- 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- Withdrawn
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
- E04C2/326—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with corrugations, incisions or reliefs in more than one direction of the element
-
- 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
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
- E04F13/142—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass with an outer layer of ceramics or clays
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/08—Flooring or floor layers composed of a number of similar elements only of stone or stone-like material, e.g. ceramics, concrete; of glass or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass
Definitions
- the invention relates to the manufacture of ceramic tiles.
- the industrial firing of ceramic tiles is carried out in long ovens (50 ⁇ to 80 ⁇ meters) at a temperature of up to 1.20 ⁇ 0 ⁇ °. With current quick-cook ovens, the treatment time is approximately one hour.
- the tiles grouped in juxtaposed rows, are transported by rolls of refractory material.
- rollers the length of which can reach 3 meters in length, have a diameter of approximately 30 ⁇ to 45 mm with a center distance between two rollers which can vary from 35 to 60 ⁇ mm.
- the tiles are placed either raw, covered with slip and enamel or having already undergone a precooking at the entrance of the oven. Throughout their journey in the cooking channel, they must remain aligned in parallel lines juxtaposed.
- the invention aims to remedy these drawbacks by providing means ensuring self-alignment of the tiles throughout their journey in the oven.
- rows of slightly spaced reliefs of short length are practiced on the reverse of the tiles, at least in the immediate vicinity of the edges of said tile.
- the reliefs project from about 0 ⁇ , 3 to 1 mm relative to the bottom of the tile.
- the height of the reliefs is 0 ⁇ , 6 mm.
- the reliefs are arranged along the tile with a pitch (space between rows included) of approximately 10 ⁇ to 30 ⁇ mm.
- the lower periphery of the tiles is surrounded by a chamfer.
- This provides a larger contact surface when a tile arrives on a roller, resulting in a more gradual guiding and the recovery of a possible tilting of the tile between two rollers.
- the reliefs 2, 3, 4 have a low height of 0 ⁇ , 6 mm.
- the reliefs 4 have a length corresponding to the sum of the lengths of two successive reliefs 3 increased by the space between two reliefs.
- the periphery of the pane 1 comprises a chamfer 5 extending over approximately 5mm with a slope of approximately 23%.
- the reliefs 2, 2 ⁇ 3 and 4 in addition to the self-alignment function described above, play the role of reinforcing ribs of the tile.
- Figure 2 is shown another embodiment in which the reliefs are cruciform with rounded corners. This arrangement makes it possible to reduce in height the number of rows of reliefs 2, 3, 4, their number and their spacing remaining constant in length.
- the reliefs 4 centered on the median transverse axis of the tile correspond to two reliefs 3 interconnected in the longitudinal direction.
- the reliefs are arranged in a pitch of 27 mm in the longitudinal direction and of 27.3 mm in the longitudinal direction.
- the thickness of the branches of the reliefs is approximately 3mm, while their length is equal to approximately 20 ⁇ mm.
- the thickness of the branches of the reliefs is approximately 3mm, while their length is equal to approximately 20 ⁇ mm.
- FIG. 3 represents an exemplary embodiment of the reliefs on a square ceramic tile of usual dimensions 20 ⁇ 0 ⁇ mm x 20 ⁇ 0 ⁇ mm.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Finishing Walls (AREA)
Abstract
Description
L'invention concerne la fabrication de carreaux céramiques.The invention relates to the manufacture of ceramic tiles.
La cuisson industrielle des carreaux céramiques s'effectue dans des fours de grande longueur (50̸ à 80̸ mètres) à une température pouvant atteindre 1.20̸0̸°. Avec les fours actuels à cuisson rapide, la durée du traitement est d'environ une heure.The industrial firing of ceramic tiles is carried out in long ovens (50̸ to 80̸ meters) at a temperature of up to 1.20̸0̸ °. With current quick-cook ovens, the treatment time is approximately one hour.
Pendant leur transit dans le four, les carreaux, groupés en files juxtaposées, sont transportés par des rouleaux en matériau réfractaire.During their transit through the oven, the tiles, grouped in juxtaposed rows, are transported by rolls of refractory material.
Ces rouleaux, dont la longeur peut atteindre 3 mètres de long, ont un diamètre d'environ 30̸ à 45 mm avec un entraxe entre deux rouleaux pouvant varier de 35 à 60̸ mm.These rollers, the length of which can reach 3 meters in length, have a diameter of approximately 30̸ to 45 mm with a center distance between two rollers which can vary from 35 to 60̸ mm.
Les carreaux sont déposés soit crus, recouverts d'engobe et d'émail soit ayant dejà subi une précuisson à l'entrée du four. Pendant tout leur trajet dans le canal de cuisson, ils doivent rester alignés en files parallèles juxtaposées.The tiles are placed either raw, covered with slip and enamel or having already undergone a precooking at the entrance of the oven. Throughout their journey in the cooking channel, they must remain aligned in parallel lines juxtaposed.
Lorsque le four est propre et la surface des rouleaux bien lisse, une déviation accidentelle d'un carreau est de faible ampleur et immédiatement rattrapée par les carreaux voisins. Mais au fur et à mesure de l'utilisation du four, les rouleaux s'encrassent et se couvrent d'aspérités sous l'effet des chutes de grains de matière issue des produits en cours de cuisson.When the oven is clean and the surface of the rollers very smooth, an accidental deviation of a tile is small and immediately caught up by neighboring tiles. But as the oven is used, the rollers become clogged and covered with roughness under the effect of falling grains of material from the products being cooked.
Ces aspérités provoquent des déviations beaucoup plus importantes des carreaux qui ne peuvent plus être rattrapés par les carreaux voisins, mais qui au contraire leur sont transmises par réaction.These asperities cause much larger deviations of the tiles which can no longer be caught up by neighboring tiles, but which on the contrary are transmitted to them by reaction.
Il en résulte un désalignement complet des files de carreaux avec fréquemment pour conséquence, lorsque les carreaux à cuire sont de faibles dimensions, des basculements de carreaux entre les rouleaux, et des coincements, qui peuvent aboutir à un blocage du four provoqué par le chevauchement des carreaux.This results in a complete misalignment of the rows of tiles, with the frequent consequence, when the tiles to be fired are small, tilting of the tiles between the rollers, and jamming, which can lead to a blockage of the oven caused by the overlapping of the tiles.
Outre la perte de produit qu'ils provoquent, ces incidents obligent à arrêter la fabrication avec des délais d'immobilisation importants pour le four.In addition to the loss of product that they cause, these incidents force the production to be stopped with long downtimes for the oven.
L'invention vise à remédier à ces inconvénients en procurant des moyens assurant un auto-alignement des carreaux tout au long de leur trajet dans le four.The invention aims to remedy these drawbacks by providing means ensuring self-alignment of the tiles throughout their journey in the oven.
Selon l'invention, on pratique sur le revers des carreaux, au moins à proximité immédiate des bords dudit carreau, des rangées légèrement espacées de reliefs de faible longueur.According to the invention, rows of slightly spaced reliefs of short length are practiced on the reverse of the tiles, at least in the immediate vicinity of the edges of said tile.
Ainsi, lorsqu'un carreau à tendance à dévier de sa ligne de déplacement, son mouvement de déviation est immédiatement interrompu par la coopération d'un des rouleaux sur lequel il se trouve avec l'espacement entre deux rangées consécutives de reliefs sur son revers.Thus, when a tile tends to deviate from its line of movement, its deflection movement is immediately interrupted by the cooperation of one of the rollers on which it is located with the spacing between two consecutive rows of reliefs on its reverse.
Selon une caractéristique préférentielle de l'invention, les reliefs font saillie d'environ 0̸,3 à 1 mm par rapport au fond du carreau.According to a preferred characteristic of the invention, the reliefs project from about 0̸, 3 to 1 mm relative to the bottom of the tile.
De préférence, la hauteur des reliefs est de 0̸,6 mm.Preferably, the height of the reliefs is 0̸, 6 mm.
Selon une autre caractéristique les reliefs sont disposés le long du carreau avec un pas (espace entre rangées comprises) d'environ 10̸ à 30̸ mm.According to another characteristic, the reliefs are arranged along the tile with a pitch (space between rows included) of approximately 10̸ to 30̸ mm.
Selon encore une autre caractéristique de l'invention, la périphérie inférieure des carreaux est ceinturée par un chanfrein.According to yet another characteristic of the invention, the lower periphery of the tiles is surrounded by a chamfer.
Cela procure une surface de contact plus grande lorsqu'un carreau arrive sur un rouleau, d'où résulte un guidage plus progressif et le rattrapage d'un éventuel basculement du carreau entre deux rouleaux.This provides a larger contact surface when a tile arrives on a roller, resulting in a more gradual guiding and the recovery of a possible tilting of the tile between two rollers.
D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre d'exemples de réalisation de carreaux selon l'invention, en référence au dessin annexé dans lequel
- La figure 1 est une vue en plan du dessous d'un carreau céramique oblong selon un premier exemple de réalisation de l'invention.
- La figure 2 est une vue analogue à la figure 1 pour un deuxième exemple de réalisation d'un carreau oblong.
- La figure 3 est une vue en plan du dessous d'un carreau céramique carré selon l'invention.
- Figure 1 is a bottom plan view of an oblong ceramic tile according to a first embodiment of the invention.
- Figure 2 is a view similar to Figure 1 for a second embodiment of an oblong tile.
- Figure 3 is a bottom plan view of a square ceramic tile according to the invention.
Sur la figure 1 est représenté le revers d'un carreau céramique rectangulaire 1 dont les dimensions usuelles sont sensiblement égales à :
L = 20̸0̸ mm x 1 = 10̸0̸ mmIn FIG. 1 is shown the reverse of a rectangular
L = 20̸0̸ mm x 1 = 10̸0̸ mm
Sur le revers sont régulièrement disposées sept rangées de reliefs 2, 3, 4, lesdites rangées étant comptées dans le sens de la longueur L.On the reverse are regularly arranged seven rows of
Les reliefs 2, 3, 4 ont une faible hauteur de 0̸,6 mm.The
Dans cet exemple, ils sont de forme rectangulaire avec les dimensions suivantes (exprimées en mm)
reliefs 2 : 6 x 5
reliefs 3 : 20̸ x 5
reliefs 4 : 48 x 5In this example, they are rectangular with the following dimensions (expressed in mm)
reliefs 2: 6 x 5
reliefs 3: 20̸ x 5
reliefs 4: 48 x 5
Les reliefs 4 ont une longueur correspondante à la somme des longueurs de deux reliefs 3 successifs augmentée de l'espace entre deux reliefs.The
Selon une variante de réalisation non repésentée, il est possible de disposer à la place des reliefs 4 deux reliefs 3 espacés. Dans les deux cas, on obtient une disposition des reliefs au pas de 28 mm dans le sens de la longueur et de 15 mm dans le sens de la largeur.According to an alternative embodiment not shown, it is possible to have, in place of the
La périphérie du carreau 1 comporte un chanfrein 5 s'étendant sur environ 5mm avec une pente de 23% environ.The periphery of the
Les reliefs 2, 2ʹ 3 et 4, outre la fonction d'autoalignement exposé ci-dessus jouent le rôle de nervures de renforcement du carreau.The
Sur la figure 2 est représenté une autre exemple de réalisation dans lequel les reliefs sont cruciformes à coins arrondis. Cette disposition permet de diminuer en hauteur le nombre de rangées de reliefs 2, 3, 4, leur nombre et leur écartement restant constant en longueur.In Figure 2 is shown another embodiment in which the reliefs are cruciform with rounded corners. This arrangement makes it possible to reduce in height the number of rows of
Comme dans le cas précédent, les reliefs 4 centrés sur l'axe transversal médian du carreau correspondent à deux reliefs 3 reliés entre eux dans le sens longitudinal.As in the previous case, the
Les reliefs sont disposés au pas de 27 mm dans le sens de la longueur et de 27, 3 mm dans le sens de la largeur.The reliefs are arranged in a pitch of 27 mm in the longitudinal direction and of 27.3 mm in the longitudinal direction.
L' épaisseur des branches des reliefs est d'environ 3mm, tandis que leur longueur est égale à environ 20̸mm. Le long de la périphérie du carreau sont disposés des demi reliefs 3 et et aux angles des quarts de reliefs 3.The thickness of the branches of the reliefs is approximately 3mm, while their length is equal to approximately 20̸mm. Along the periphery of the tile are arranged
La figure 3 représente un exemple de réalisation des reliefs sur un carreau céramique carré de dimensions usuelles 20̸0̸ mm x 20̸0̸ mm.FIG. 3 represents an exemplary embodiment of the reliefs on a square ceramic tile of usual dimensions 20̸0̸ mm x 20̸0̸ mm.
Les reliefs sont identiques à ceux de la figure 2 et disposés selon les mêmes pas.The reliefs are identical to those of Figure 2 and arranged in the same steps.
De même on y retrouve le chanfrein périphérique 5.Likewise, there is the
Bien que l'on ait décrit des exemples de réalisations avec des reliefs en forme de rectangles et de croix, l'invention n'est nullement limitée auxdites formes et s'applique egalement à tout carreau comportant des reliefs sur son revers, lesdits reliefs ayant une épaisseur comprise entre 0̸,3 et 1 mm et étant répartis selon un pas compris 10̸ et 30̸ mm dans les deux axes de symétrie du carreau.Although examples of embodiments have been described with reliefs in the form of rectangles and crosses, the invention is in no way limited to said shapes and also applies to any tile having reliefs on its reverse, said reliefs having a thickness between 0̸, 3 and 1 mm and being distributed in a pitch of 10̸ and 30̸ mm in the two axes of symmetry of the tile.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8700768A FR2610026B1 (en) | 1987-01-23 | 1987-01-23 | SELF-ALIGNING DEVICE FOR COOKING CERAMIC TILES DURING THEIR COOKING CYCLE IN A ROLL OVEN |
FR8700768 | 1987-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0277867A1 true EP0277867A1 (en) | 1988-08-10 |
Family
ID=9347192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88400141A Withdrawn EP0277867A1 (en) | 1987-01-23 | 1988-01-22 | Device for the self-alignment of ceramic tiles during their firing cycle in a brick oven with rollers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0277867A1 (en) |
FR (1) | FR2610026B1 (en) |
PT (1) | PT86605A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009090298A1 (en) * | 2008-01-14 | 2009-07-23 | Perae-Rouhu Yrjoe J | Arrangement for covering a floor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1698091A (en) * | 1928-04-18 | 1929-01-08 | Porcelain Tile Company | Tiled construction |
FR763239A (en) * | 1933-10-31 | 1934-04-26 | Ind Des Arts Plastiques | Improvements to facing tiles |
US2156149A (en) * | 1938-01-14 | 1939-04-25 | Us Quarry Tile Company | Ceramic manufacture |
GB1600336A (en) * | 1978-03-28 | 1981-10-14 | Johnson Richards Tiles Ltd H & | Tiles |
DE3426866A1 (en) * | 1983-09-27 | 1985-04-11 | Ceramiche Girardi S.p.A., Palazzola dello Stella, Udine | Method for manufacturing ceramic tiles without dirtying the feed rollers in the burning-in oven, and the tiles obtained in this way |
-
1987
- 1987-01-23 FR FR8700768A patent/FR2610026B1/en not_active Expired - Lifetime
-
1988
- 1988-01-22 PT PT8660588A patent/PT86605A/en not_active Application Discontinuation
- 1988-01-22 EP EP88400141A patent/EP0277867A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1698091A (en) * | 1928-04-18 | 1929-01-08 | Porcelain Tile Company | Tiled construction |
FR763239A (en) * | 1933-10-31 | 1934-04-26 | Ind Des Arts Plastiques | Improvements to facing tiles |
US2156149A (en) * | 1938-01-14 | 1939-04-25 | Us Quarry Tile Company | Ceramic manufacture |
GB1600336A (en) * | 1978-03-28 | 1981-10-14 | Johnson Richards Tiles Ltd H & | Tiles |
DE3426866A1 (en) * | 1983-09-27 | 1985-04-11 | Ceramiche Girardi S.p.A., Palazzola dello Stella, Udine | Method for manufacturing ceramic tiles without dirtying the feed rollers in the burning-in oven, and the tiles obtained in this way |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009090298A1 (en) * | 2008-01-14 | 2009-07-23 | Perae-Rouhu Yrjoe J | Arrangement for covering a floor |
Also Published As
Publication number | Publication date |
---|---|
FR2610026B1 (en) | 1992-05-29 |
FR2610026A1 (en) | 1988-07-29 |
PT86605A (en) | 1989-01-30 |
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