WO2004065085A1 - Method and plant for forming ceramic slabs or tiles - Google Patents
Method and plant for forming ceramic slabs or tiles Download PDFInfo
- Publication number
- WO2004065085A1 WO2004065085A1 PCT/EP2003/014875 EP0314875W WO2004065085A1 WO 2004065085 A1 WO2004065085 A1 WO 2004065085A1 EP 0314875 W EP0314875 W EP 0314875W WO 2004065085 A1 WO2004065085 A1 WO 2004065085A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- powders
- plant
- powder
- controlling
- pressing
- Prior art date
Links
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 relates generally to a method for manufacturing ceramic tiles or slabs, and in, particular to a method for forming said slabs and the relative plant for its implementation.
- Ceramic tile forming methods consisting of depositing a continuous layer of powders on a flexible belt with which walls are associated to laterally retain the powders.
- the belt on which said layer of powders is created is then advanced through a pressing station of continuous type, which compacts the powders on the flexible belt to obtain a coherent article of compacted powders.
- the article On termination of compacting, the article is divided into blanks, and possibly subjected to a second pressing.
- the pressing station generally comprises both powder compacting means, in the form of rollers or compacting belts, and means for controlling the expansion of the material on termination of compacting.
- said compacting means and said expansion control means are adjustable in height to enable the thickness of the article to be varied.
- the height adjustment of the compacting means ensures planarity of the article, and a constant compacting ratio in the transverse direction, but gives no assurance with regard to the mechanical characteristics of the article, which are a function of the maximum pressure with which the compacting means act on the powders.
- the thickness of the strip of powders deposited on the belt varies both in the transverse direction and in the longitudinal direction either for aesthetic reasons or because of loading defects, or that for the same thickness the powders have a particle size distribution or other physical characteristics different in the transverse direction and hence are compacted to a different extent in the transverse direction.
- the object of the present invention is to overcome the drawbacks of the known art within the framework of a simple and rational solution.
- the invention attains said object by providing a method for forming ceramic tiles or slabs in which the force exerted on the powder strip is regulated during pressing.
- the method of the invention comprises at least the following operative steps: - depositing on a conveyor belt a continuous layer of powders, walls being associated with the belt for their lateral retention;
- the powder pressing step comprises both compacting said powders and controlling the expansion of said powders after compacting.
- the force exerted on said powders during pressing can be controlled either during powder compacting alone or during powder expansion control alone or during both.
- the plant of the invention can be used both for obtaining a completely compacted article, and for obtaining a pre- compacted article which must then be subjected to a second pressing.
- the invention also includes a plant for implementing the aforesaid method.
- This plant comprises a conveyor belt on which a continuous strip of material in powder form is created and which is arranged to advance said strip through a pressing station provided with means for laterally retaining the material on said belt, means being associated with said pressing station to control the force exerted on said powders.
- said pressing station comprises compacting means enabling the powders to be continuously compacted on the belt advancing through the station, with which said compaction control means are associated.
- Said continuous compacting means can be either in the form of a compacting roller or in the form of a compacting belt.
- said pressing station also comprises, downstream of said continuous compacting means, a device for controlling the expansion of the material after compaction.
- the means for controlling the force exerted on the powders comprises a control unit for at least one hydraulic cylinder-piston unit with which the powder compaction means or said device for controlling material expansion after compaction are associated.
- said expansion means comprise a flexible plate, with which a plurality of hydraulic cylinder-piston units controlled by said control unit are associated.
- said hydraulic cylinder-piston units can be disposed in several parallel rows to enable the force exerted on the powders to be also controlled along the powder advancement direction.
- Figure 1 is a schematic side section through the plant of the invention.
- Figure 2 is an enlarged view of a detail of the invention.
- Figure 3 is the section Ill-Ill of Figure 1.
- Figure 4 is the section IV-IV of Figure 2.
- Figure 5 is an enlarged view of a detail of a variant of the invention.
- Figure 6 is a schematic cross-section through Figure 5.
- Figure 7 shows an enlarged detail of Figure 6.
- Said figures show the plant 1 , which comprises a motorized lower conveyor belt 2 on which a continuous strip 100 of powders is deposited by usual devices of known type, and hence not shown.
- the belt passes through a pressing station 3, the purpose of which is to compact the powders of the strip 100 to obtain an article, of substantially parallelepiped form, of coherent material.
- the article can form the final tile, or a pre-compacted slab which must then be subjected to a second pressing.
- the article can be decorated if required and then divided into blanks of suitable dimensions depending on the final product size to be obtained.
- the pressing station 3 comprises a powder compaction first zone 30, downstream of which there is a second zone 31 in which the article formed in the compaction zone 30 is decompressed.
- the powder compaction zone 30 comprises two mutually superposed motorized compactor devices 4 and 5, one of which is positioned below the belt 2 and the other above it at a distance from the belt 2 which can be adjusted on the basis of the thickness of the powder strip to be compacted and of the pressure at which pressing is to be carried out.
- Each of the compactors 4 and 5 is provided with a motorized roller and an idle roller, indicated respectively by the reference numerals 40, 41 and 50,
- roller table 43 and 53 consisting of a plurality of idle rollers, the purpose of which is to maintain the bands 42 and 52 pressed to compact the strip of powder material.
- the roller table 53 is inclined in the direction of advancement of the belt 2 so as to make the compaction of the strip powders gradual.
- rollers 6 and 7 Downstream of the roller tables 43 and 53 there are provided two opposing rollers 6 and 7, of which the roller 6 is positioned below the band 42, whereas the roller 7 is positioned above the band 43 and presses this latter against the powder strip 100 advancing on the belt 2.
- the roller 7 is associated with two hydraulic cylinder-piston units 8 and 9 supported by a frame 10 and arranged to transmit a controlled force to the roller 7, in order to regulate the pressure which said roller exerts on the powder strip 100.
- the cylinder-piston units 8 and 9 are connected by a hydraulic circuit 11 to a control unit 12 comprising a pump 13 for delivering a fluid, typically oil, under pressure, a pressure regulating valve 14 provided with a pressure transducer in feedback, and a pressure gauge 15 measuring the pressure in the feed circuit of the cylinder-piston units.
- the roller 7 separates the compaction zone 30 for the powder strip 100 from the subsequent decompression zone 31 in which the powder strip 100 expands in a controlled manner to prevent cracks arising in the compacted article.
- said decompression zone 31 comprises two superposed plates 16 and 17, of which the lower plate 17 is positioned below the belt 2 and the upper plate 16 is positioned above the belt 2, in contact with the band 52.
- the lower plate 17 is fixed and horizontal, whereas the plate 16 is supported on a crosspiece 18 by hydraulic cylinder-piston units 19 which enable the force exerted on the powders by the plate to be regulated.
- the plate 16 can also swivel about the cylinder-piston units so that it can be inclined to the belt 2 to enable the compacted strip of powders to expand with a very small deformation gradient compatible with the intrinsic characteristics of the powders.
- the cylinder-piston units 19 are connected by a hydraulic circuit 21 to a control unit 20 identical with the control unit 12 shown in Figure 4.
- the pressing station also comprises lateral powder retention means, which in the illustrated embodiment are in the form of two parallel deformable straps 60 associated with the compactor device 5. In this respect, each of the two straps passes partially about the compactor device 5 and about deviator wheels 101 , 102 and 103.
- the decompression zone 31 comprises a fixed body 32 supporting a flexible plate 35 via a plurality of hydraulic cylinder-piston units 36.
- each cylinder-piston unit comprises a cylinder, consisting of a cavity 320 present in the body 32, within which there slides a piston 321 the base of which is fixed to the flexible plate 35.
- the plate 35 is fixed by screws 37, each of which is received in a socket piece 38 inserted into a hole 39 in the plate 35.
- the socket piece 38 is substantially smaller than the hole 39, so that the plate can undergo small swivel movements relative to the support body 32.
- the plane in which the plate lies during plant operation depends on the inclination of the band 52.
- All the cavities 320 are connected to a hydraulic circuit 49 connected to a control unit 20.
- the plate 35 behaves as an isostatic buffer, to distribute the force uniformly over the powders both in the transverse direction and in the longitudinal direction.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0317770-0A BR0317770B1 (en) | 2003-01-20 | 2003-12-23 | method for forming ceramic tiles using ceramic material powders, and installation for forming tiles or tiles using ceramic material powders. |
EP03815376A EP1585620B1 (en) | 2003-01-20 | 2003-12-23 | Method and plant for forming ceramic slabs or tiles |
AU2003296730A AU2003296730A1 (en) | 2003-01-20 | 2003-12-23 | Method and plant for forming ceramic slabs or tiles |
CN2003801087144A CN1738705B (en) | 2003-01-20 | 2003-12-23 | Method and plant for forming ceramic slabs or tiles |
DE60331361T DE60331361D1 (en) | 2003-01-20 | 2003-12-23 | METHOD AND APPARATUS FOR PRODUCING CERAMIC PLATES OR TILES |
MXPA05007560A MXPA05007560A (en) | 2003-01-20 | 2003-12-23 | Method and plant for forming ceramic slabs or tiles. |
AT03815376T ATE457860T1 (en) | 2003-01-20 | 2003-12-23 | METHOD AND SYSTEM FOR PRODUCING CERAMIC PLATES OR TILES |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000004A ITRE20030004A1 (en) | 2003-01-20 | 2003-01-20 | METHOD AND PLANT FOR THE FORMING OF SLABS OR CERAMIC TILES. |
ITRE2003A000004 | 2003-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004065085A1 true WO2004065085A1 (en) | 2004-08-05 |
Family
ID=29267115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/014875 WO2004065085A1 (en) | 2003-01-20 | 2003-12-23 | Method and plant for forming ceramic slabs or tiles |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP1585620B1 (en) |
CN (1) | CN1738705B (en) |
AT (1) | ATE457860T1 (en) |
AU (1) | AU2003296730A1 (en) |
BR (1) | BR0317770B1 (en) |
DE (1) | DE60331361D1 (en) |
ES (1) | ES2339939T3 (en) |
IT (1) | ITRE20030004A1 (en) |
MX (1) | MXPA05007560A (en) |
PT (1) | PT1585620E (en) |
RU (1) | RU2370363C2 (en) |
WO (1) | WO2004065085A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009007862A1 (en) * | 2007-07-10 | 2009-01-15 | System S.P.A. | A process for realising solar panels. |
ITRE20110079A1 (en) * | 2011-10-07 | 2013-04-08 | Sacmi | DEVICE FOR THE COMPACTION OF MATERIAL POWDER |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104149171B (en) * | 2014-08-22 | 2017-03-22 | 柳州市杰特建材有限责任公司 | Roller press for cement boards |
ITUA20164307A1 (en) * | 2016-06-13 | 2017-12-13 | Sacmi | MACHINE AND METHOD FOR THE COMPACTION OF CERAMIC POWDER |
IT201600091618A1 (en) | 2016-09-12 | 2018-03-12 | Sacmi | DEVICE FOR THE COMPACTION OF POWDERED MATERIAL, IN PARTICULAR CERAMIC MATERIAL |
CN106239702B (en) * | 2016-09-27 | 2020-04-14 | 广东科达洁能股份有限公司 | Continuous forming ceramic brick press and production process thereof |
IT201600105117A1 (en) * | 2016-10-19 | 2018-04-19 | Sacmi | MACHINE FOR THE COMPACTION OF MATERIAL POWDER |
IT201700026199A1 (en) * | 2017-03-09 | 2018-09-09 | Sacmi | PLANT AND METHOD FOR THE CREATION OF CERAMIC ARTICLES |
IT201800007737A1 (en) * | 2018-08-01 | 2020-02-01 | Sacmi Cooperativa Mecc Imola Societa' Cooperativa | METHOD FOR COMPACTION OF POWDER MATERIAL |
CN109291218A (en) * | 2018-10-15 | 2019-02-01 | 广东科达洁能股份有限公司 | A kind of full-automatic lifting formula roll squeezer |
CN219153230U (en) * | 2022-08-24 | 2023-06-09 | 科达制造股份有限公司 | Ceramic rolling equipment with controllable release Liang Qingjiao |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB640018A (en) * | 1946-07-03 | 1950-07-12 | Atlas Products N Z Ltd | Improvements in method of and apparatus for the manufacture of roofing tiles and thelike |
US3991149A (en) * | 1974-10-03 | 1976-11-09 | Steven Hurwitt | Method for controlling the thickness of ceramic tape |
EP0291572A1 (en) * | 1987-05-22 | 1988-11-23 | National House Industrial Co., Ltd. | Method of producing a porous ceramic panel |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2277707B (en) * | 1993-04-29 | 1996-07-03 | Redland Technology Ltd | Improvements in a roof tile making machine |
IT1269274B (en) * | 1994-11-22 | 1997-03-26 | Carlo Antonio Camorani | METHOD FOR FORMING CERAMIC TILES AND RELATED PLANT |
IT1292873B1 (en) * | 1997-04-23 | 1999-02-11 | Sacmi | EQUIPMENT FOR PRESSING TWO-LAYER CERAMIC TILES |
-
2003
- 2003-01-20 IT IT000004A patent/ITRE20030004A1/en unknown
- 2003-12-23 MX MXPA05007560A patent/MXPA05007560A/en active IP Right Grant
- 2003-12-23 WO PCT/EP2003/014875 patent/WO2004065085A1/en not_active Application Discontinuation
- 2003-12-23 AT AT03815376T patent/ATE457860T1/en not_active IP Right Cessation
- 2003-12-23 AU AU2003296730A patent/AU2003296730A1/en not_active Abandoned
- 2003-12-23 PT PT03815376T patent/PT1585620E/en unknown
- 2003-12-23 EP EP03815376A patent/EP1585620B1/en not_active Expired - Lifetime
- 2003-12-23 CN CN2003801087144A patent/CN1738705B/en not_active Expired - Lifetime
- 2003-12-23 BR BRPI0317770-0A patent/BR0317770B1/en active IP Right Grant
- 2003-12-23 RU RU2005124027/03A patent/RU2370363C2/en active IP Right Revival
- 2003-12-23 DE DE60331361T patent/DE60331361D1/en not_active Expired - Lifetime
- 2003-12-23 ES ES03815376T patent/ES2339939T3/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB640018A (en) * | 1946-07-03 | 1950-07-12 | Atlas Products N Z Ltd | Improvements in method of and apparatus for the manufacture of roofing tiles and thelike |
US3991149A (en) * | 1974-10-03 | 1976-11-09 | Steven Hurwitt | Method for controlling the thickness of ceramic tape |
EP0291572A1 (en) * | 1987-05-22 | 1988-11-23 | National House Industrial Co., Ltd. | Method of producing a porous ceramic panel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009007862A1 (en) * | 2007-07-10 | 2009-01-15 | System S.P.A. | A process for realising solar panels. |
ITRE20110079A1 (en) * | 2011-10-07 | 2013-04-08 | Sacmi | DEVICE FOR THE COMPACTION OF MATERIAL POWDER |
WO2013050865A1 (en) * | 2011-10-07 | 2013-04-11 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Device and method for compacting powder material |
RU2606142C2 (en) * | 2011-10-07 | 2017-01-10 | Сакми Кооператива Мекканичи Имола Сочьета'Кооператива | Device and method for powder material pressing |
Also Published As
Publication number | Publication date |
---|---|
DE60331361D1 (en) | 2010-04-01 |
BR0317770B1 (en) | 2012-12-11 |
PT1585620E (en) | 2010-04-23 |
ITRE20030004A1 (en) | 2004-07-21 |
ITRE20030004A0 (en) | 2003-01-20 |
EP1585620A1 (en) | 2005-10-19 |
AU2003296730A1 (en) | 2004-08-13 |
RU2005124027A (en) | 2006-03-20 |
MXPA05007560A (en) | 2005-09-21 |
BR0317770A (en) | 2005-11-22 |
CN1738705B (en) | 2010-05-26 |
ATE457860T1 (en) | 2010-03-15 |
EP1585620B1 (en) | 2010-02-17 |
RU2370363C2 (en) | 2009-10-20 |
CN1738705A (en) | 2006-02-22 |
ES2339939T3 (en) | 2010-05-27 |
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