EP1136211A1 - A device for forming ceramic products, including slabs, tiles and the like, by powder pressing - Google Patents
A device for forming ceramic products, including slabs, tiles and the like, by powder pressing Download PDFInfo
- Publication number
- EP1136211A1 EP1136211A1 EP00201036A EP00201036A EP1136211A1 EP 1136211 A1 EP1136211 A1 EP 1136211A1 EP 00201036 A EP00201036 A EP 00201036A EP 00201036 A EP00201036 A EP 00201036A EP 1136211 A1 EP1136211 A1 EP 1136211A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- active surface
- continuous belt
- forming frame
- pressed product
- delimiting
- 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.)
- Granted
Links
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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
- B28B3/02—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
- B28B3/024—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 the pressure on the material being transmitted through flexible or resilient wall parts, e.g. flexible cushions on the ramming surface, resilient wall parts pressing as a result of deformation caused by ram pressure
-
- 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
- B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping
- B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
- B28B5/021—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of definite length
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
Abstract
Description
- The prior art in the field of forming ceramic tiles is based on the use of dies inserted into presses. The dies are, schematically speaking, constituted by a cavity into which powders are deposited, and by at least one punch having the task of pressing the deposited powders.
- Also known is the use of dies in which the cavity is not made in the bottom die; this is instead used for depositing a layer of powders which is then pressed by the top die or punch. Delimitation and lateral containment of the material to be pressed to form the tile or slab is performed by a forming frame associated to the punch or top die, which projects from the top die so that it can remain in contact with the bottom plane (bearing the powders to be pressed) during the pressing operation.
- This solution exhibits a number of constructional complexities due to the need to predispose devices for vertically moving the frame with respect to the punch, and is subject to problems of wear on the moving parts.
- A further and not easy-to-solve drawback concerns the need to provide a device for cleaning the punch between one pressing operation and a next.
- The main aim of the present invention is to provide a device for forming ceramic products, such as slabs, tiles and the like, by power pressing, which will obviate the above-described drawbacks and limitations inherent in the prior art.
- The invention is constructionally simple and functional.
- A further advantage of the invention is the fact that it enables a punch-cleaning operation to be carried out between one pressing operation and a next both away from the pressing zone and easily.
- These aims and advantages and more besides are all attained by the object of the invention, as it is characterised in the appended claims.
- Further characteristics and advantages of the present invention will better emerge from the detailed description that follows of a preferred but non-exclusive embodiment of the invention, illustrated purely by way of a nonlimiting example in the accompanying figures of the drawings, in which:
- figure 1 is a schematic longitudinal section made according to a vertical plane which is parallel to the advancement direction of the materials being pressed;
- figure 2 is an enlarged-scale drawing of a detail of figure 1;
- figure 3 is the same detail as in figure 2, in a different operative configuration.
With reference to the above-mentioned figures, 1 denotes in its entirety a
device for forming ceramic products, such as slabs and tiles and the like, by
powder pressing, which is schematically constituted by a
press 11 with a central aperture crossed through by alower element 2, constituted by a lowercontinuous belt 12 exhibiting arest plane 3 to support thepowder 20 to be pressed, and anupper element 4, constituted by the horizontal branch of an uppercontinuous belt 15, ring-wound and stretched between twodrums 16 having parallel axes and being positioned externally, which uppercontinuous belt 15 constituting theupper element 4 is driven in synchrony with the lowercontinuous belt 12 constituting thelower element 2. -
- The
lower element 2 lies and slides along an upper surface of thepiston 10 of thepress 11 and is commanded by thepiston 10 to displace upwards in order to exert the pressing action. - The
upper element 4 is provided with a plurality ofactive surfaces 5, located and distributed in a predetermined order along the uppercontinuous belt 15. At each pressing event theactive surfaces 5 are brought into contact with therest plane 3 of the lowercontinuous belt 12. - Each
active surface 5 is characterised in that it is provided with a formingframe 6 which projects inferiorly (when theactive surface 5 is in contact with the rest plane 3) and is predisposed in such a way as to delimit at its perimeter a closed pressing zone. - A plurality of forming
frames 6 can be predisposed on the uppercontinuous belt 15, each different from another, so that the type of surface to be obtained on the pressed product can be alternated. - The forming
frame 6 exhibits aninternal part 7 which carries out the pressing of theedge 22 of the final pressedproduct 21. Thisinternal part 7 is externally delimited by anedge 8 having a depth, measuring in the pressing direction, which is not less than or is equal to that of the central body of the final pressedproduct 21. - In particular, the
internal part 7 inferiorly projects with respect to theactive surface 5 and presents a breadth which gradually decreases as it distances from theedge 8. - The whole forming
frame 6 is constituted by a material provided with a consistent elastic deformability (rubber or another elastomer). - The upper branch of the lower
continuous belt 12 is moved in concordance with the lower branch of the uppercontinuous belt 15. - In the described structure, the
lower rest plane 3 also functions as the bottom die of the forming device. - During the pressing phase, the
piston 10 rises, raising the part of thelower element 2 on which the powder to be pressed has been deposited, thus pressing the powder against theactive surface 5 delimited by the formingframe 6 of the uppercontinuous belt 15. - While the
edges 8 have mainly the task of perimetrally defining the area of compression, theinternal parts 7 have the function of realising, at the edge of the powder, a perimeter area of greater compression with respect to the central part of the powders, thus creating a more compacted zone at the edge of the pressed slab or tile. - The presence of this more compressed zone, which is removed by a cut after firing, and especially in the case of slim slabs or tiles, has essentially the very important task of preventing formation of fissures or cracks in the body of the slabs or tiles themselves.
- An advantage of the present invention is that the slab- or tile-forming operation is rendered very simple and rapid, especially when the slabs or tiles are of large dimensions but are relatively slim.
Claims (7)
- A device for forming ceramic products, including slabs, tiles and the like, by powder pressing, characterised in that it comprises:a lower element (2) bearing a lower rest plane (3) for supporting a powder to be pressed (20), the lower rest plane (3) also functioning as a bottom die of the device;an upper element (4) having at least one active surface (5), predisposed facing the lower rest plane (3), the at least one active surface (5) being provided with a forming frame (6) which projects inferiorly and which is predisposed in such a way as to delimit a perimeter of a closed pressing zone;the forming frame (6), as well as delimiting a perimeter of a closed pressing zone and therefore also delimiting a corresponding final pressed product (21), also generating an edge (22) of the final pressed product (21) which is characterised by a greater density than a density of internal zones of the final pressed product (21).
- The device of claim 1, characterised in that the forming frame (6) exhibits an internal part (7) which presses the edge (22) of the final pressed product (21) and which is delimited externally by a delimiting edge (8) having a depth which, measured in a pressing direction, is not less than or is equal to a depth of the final pressed product (21).
- The device of claim 2, characterised in that the internal part (7) projects inferiorly with respect to the active surface (5) and gradually decreases in depth in a direction going from the delimiting edge (8) towards the active surface.
- The device of claim 3, characterised in that the upper element (4) having at least one active surface (5) delimited by the forming frame (6) is constituted by a lower branch of an upper continuous belt (15) which is ring-wound and stretched between two drums (16) having parallel axes and being externally positioned.
- The device of claim 4, characterised in that at least the forming frame (6) is constituted by a material having considerable elastic deformability properties.
- The device of claim 5, characterised in that the ring-wound upper continuous belt (15) bears a plurality of active surfaces (5) delimited by an equal plurality of forming frames (6), distributed along the upper continuous belt (15).
- The device of claim 6, characterised in that the lower element (2) bearing the lower rest plane (3) for supporting the powder to be pressed (20) is constituted by an upper branch of the lower continuous belt (12), which belt (20) moves in synchrony with the lower branch of the upper continuous belt (15).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES00201036T ES2219254T3 (en) | 2000-03-23 | 2000-03-23 | DEVICE FOR THE MODELING OF CERAMIC PRODUCTS, WHICH INCLUDE Slabs, TILES, TILES AND SIMILAR, BY PRESSING DUST. |
EP20000201036 EP1136211B1 (en) | 2000-03-23 | 2000-03-23 | A device for forming ceramic products, including slabs, tiles and the like, by powder pressing |
PT00201036T PT1136211E (en) | 2000-03-23 | 2000-03-23 | A DEVICE FOR THE FORMATION OF CERAMIC PRODUCTS INCLUDING MOSAIC LAKES AND AFINS THROUGH PO PRESSURE |
DE2000611221 DE60011221T2 (en) | 2000-03-23 | 2000-03-23 | Device for producing ceramic objects, such as plates, tiles and similar articles, by pressing powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20000201036 EP1136211B1 (en) | 2000-03-23 | 2000-03-23 | A device for forming ceramic products, including slabs, tiles and the like, by powder pressing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1136211A1 true EP1136211A1 (en) | 2001-09-26 |
EP1136211B1 EP1136211B1 (en) | 2004-06-02 |
Family
ID=8171240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000201036 Expired - Lifetime EP1136211B1 (en) | 2000-03-23 | 2000-03-23 | A device for forming ceramic products, including slabs, tiles and the like, by powder pressing |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1136211B1 (en) |
DE (1) | DE60011221T2 (en) |
ES (1) | ES2219254T3 (en) |
PT (1) | PT1136211E (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1500480A2 (en) * | 2003-07-22 | 2005-01-26 | System S.p.A. | A device for forming ceramic products, including slabs, tiles and the like, by powder pressing |
EP2808142A1 (en) * | 2013-04-21 | 2014-12-03 | Rampf Formen GmbH | Applied load device |
ITUB20155626A1 (en) * | 2015-11-16 | 2017-05-16 | System Spa | FORMING ELEMENT FOR CERAMIC ARTICLES |
ITUB20160504A1 (en) * | 2016-01-15 | 2017-07-15 | System Spa | FORMAT COMPENSATOR FOR A PRESSING DEVICE |
WO2017149484A1 (en) * | 2016-03-04 | 2017-09-08 | System S.P.A. | A pressing device |
EP4163070A1 (en) * | 2015-11-16 | 2023-04-12 | System Ceramics S.p.A. | A forming element for ceramic articles |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT202000016744A1 (en) * | 2020-07-09 | 2022-01-09 | Siti B & T Group Spa | EQUIPMENT FOR THE CREATION OF SLABS IN CERAMIC MATERIAL |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB647144A (en) * | 1947-07-17 | 1950-12-06 | Malkin Tiles Burslem Ltd | Improvements in and relating to die boxes for moulding clay tiles |
DE1965173A1 (en) * | 1969-12-27 | 1971-07-22 | Steinzeug Und Mosaikplattenfab | Process for the production of slip-resistant, cams provided, dry-pressed ceramic stoneware tiles |
GB2260318A (en) * | 1991-09-17 | 1993-04-14 | Daiken Corp | An inorganic plate |
WO1998023424A2 (en) * | 1996-11-22 | 1998-06-04 | Carlo Antonio Camorani | Manufacturing of powdered material |
US5779957A (en) * | 1993-12-16 | 1998-07-14 | Materiaux De Construction International | Article, in particular a building covering plate, and process for manufacturing said article |
-
2000
- 2000-03-23 PT PT00201036T patent/PT1136211E/en unknown
- 2000-03-23 DE DE2000611221 patent/DE60011221T2/en not_active Expired - Lifetime
- 2000-03-23 ES ES00201036T patent/ES2219254T3/en not_active Expired - Lifetime
- 2000-03-23 EP EP20000201036 patent/EP1136211B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB647144A (en) * | 1947-07-17 | 1950-12-06 | Malkin Tiles Burslem Ltd | Improvements in and relating to die boxes for moulding clay tiles |
DE1965173A1 (en) * | 1969-12-27 | 1971-07-22 | Steinzeug Und Mosaikplattenfab | Process for the production of slip-resistant, cams provided, dry-pressed ceramic stoneware tiles |
GB2260318A (en) * | 1991-09-17 | 1993-04-14 | Daiken Corp | An inorganic plate |
US5779957A (en) * | 1993-12-16 | 1998-07-14 | Materiaux De Construction International | Article, in particular a building covering plate, and process for manufacturing said article |
WO1998023424A2 (en) * | 1996-11-22 | 1998-06-04 | Carlo Antonio Camorani | Manufacturing of powdered material |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1500480A2 (en) * | 2003-07-22 | 2005-01-26 | System S.p.A. | A device for forming ceramic products, including slabs, tiles and the like, by powder pressing |
EP1500480A3 (en) * | 2003-07-22 | 2005-12-14 | System S.p.A. | A device for forming ceramic products, including slabs, tiles and the like, by powder pressing |
EP2808142A1 (en) * | 2013-04-21 | 2014-12-03 | Rampf Formen GmbH | Applied load device |
ITUB20155626A1 (en) * | 2015-11-16 | 2017-05-16 | System Spa | FORMING ELEMENT FOR CERAMIC ARTICLES |
EP4163070A1 (en) * | 2015-11-16 | 2023-04-12 | System Ceramics S.p.A. | A forming element for ceramic articles |
ITUB20160504A1 (en) * | 2016-01-15 | 2017-07-15 | System Spa | FORMAT COMPENSATOR FOR A PRESSING DEVICE |
WO2017122124A1 (en) * | 2016-01-15 | 2017-07-20 | System S.P.A. | A size compensator for a pressing device |
CN108472906A (en) * | 2016-01-15 | 2018-08-31 | 系统股份公司 | Dimension compensation device for pressure setting |
US10675778B2 (en) | 2016-01-15 | 2020-06-09 | System Ceramics S.P.A. | Size compensator for a pressing device |
WO2017149484A1 (en) * | 2016-03-04 | 2017-09-08 | System S.P.A. | A pressing device |
CN108698355A (en) * | 2016-03-04 | 2018-10-23 | 系统股份公司 | Pressue device |
US10478995B2 (en) | 2016-03-04 | 2019-11-19 | System S.P.A. | Pressing device |
Also Published As
Publication number | Publication date |
---|---|
DE60011221D1 (en) | 2004-07-08 |
EP1136211B1 (en) | 2004-06-02 |
DE60011221T2 (en) | 2005-08-04 |
ES2219254T3 (en) | 2004-12-01 |
PT1136211E (en) | 2004-09-30 |
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