EP1773553A1 - Plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production - Google Patents
Plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile productionInfo
- Publication number
- EP1773553A1 EP1773553A1 EP05771039A EP05771039A EP1773553A1 EP 1773553 A1 EP1773553 A1 EP 1773553A1 EP 05771039 A EP05771039 A EP 05771039A EP 05771039 A EP05771039 A EP 05771039A EP 1773553 A1 EP1773553 A1 EP 1773553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- carriage
- tray
- mould
- loading
- 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
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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/386—Cleaning
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/022—Feeding several successive layers, optionally of different materials
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/027—Feeding the moulding material in measured quantities from a container or silo by using a removable belt or conveyor transferring the moulding material to the moulding cavities
Definitions
- the present invention relates to a plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production.
- a layer of at least one base material generally in powder form, for example atomized clay, is firstly deposited in the at least one forming cavity of a usual ceramic mould to constitute about 70-80% of the product thickness and provide the final tile with adequate mechanical strength.
- a second layer which can consist of coloured powders or glazes of different particle size, is deposited on the base layer to obtain the desired aesthetic effect.
- the two layers are then compacted by the press to obtain an already decorated tile which is then fed to firing.
- plants comprising a feed carriage having, for loading the base clay, at least one upperly and lowerly open tray provided with a suitable grid for feeding the mould cavity.
- Each tray presents a plan configuration substantially corresponding to that of the mould cavity.
- the carriage supports an externally projecting horizontal belt feeder for the powdered glaze.
- the belt feeder and the grid-comprising tray are positioned side by side and fixed to the carriage, the first externally and the second internally.
- the carriage is slidable with reciprocating rectilinear movement on a continuous flat horizontal surface positioned as a continuation of the upper surface of the mould die plate in which the cavity to be filled is provided.
- the carriage is driven synchronously with the press operations, between a retracted position in which the grid-comprising loading tray receives the base material while the belt receives the coloured powders, and a completely advanced position in which the tray overlies the mould cavity, hence the base material falls from the tray into the cavity.
- the carriage On its return from the completely advanced to the retracted position, the carriage assumes a partially advanced position, in which the belt feeder allows the coloured powders to fall onto the base material already fallen into the cavity.
- the belt when in its completely advanced position, the belt passes beyond the cavity which is filled with the base material, then during its return to the retracted position, when in its partially advanced position, the belt is rotated and the overlying powder falls into the cavity to form the second layer above the base material prior to the pressing stage.
- the carriage loading tray In passing from its retracted position to its advanced position the carriage loading tray is closed lowerly by the flat surface along which it slides.
- the tray present in the carriage is loaded by an overlying hopper the lower mouth of which has a transverse dimension (i.e. perpendicular to the carriage movement) equal to the transverse dimension of the tray, whereas the longitudinal dimension is substantially less than the corresponding tray dimension. Consequently, the tray is loaded continuously about its retracted position.
- the belt feeder positioned external to the carriage and fixed to it, is loaded with coloured powders by devices of the known art which often require a longer loading time than that required for loading the base material.
- the tray in the carriage is loaded with the base material forming the first layer while the carriage is sliding
- the belt is loaded with the powders forming the second layer while the carriage is at rest, by a loading device which becomes positioned above the belt and releases the powder layer through a plurality of outlets located along the entire extent of the belt, to then be transferred into the mould cavity.
- the total duration of the loading cycle is equal to the sum of the time for loading the coloured powders onto the belt and the time for loading the clay powders into the grid-comprising tray.
- the carriage is moved into the completely advanced position, so bringing the belt beyond the cavity, with possible spillage of the overlying coloured powders and consequent soiling of the mould.
- the object of the present invention is to provide a plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production, which has structural and functional characteristics such as to obviate the stated drawbacks of the known art.
- This object is attained by a plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production in accordance with claim 1.
- the dependent claims define particularly advantageous preferred embodiments of the invention.
- Figure 1 is a schematic side view of a plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production in accordance with the present invention, during an operative stage;
- Figure 2 shows the plant of Figure 1 during the carriage start stage
- Figure 3 shows the plant of Figure 1 during the stage of loading the base material into the mould cavity
- Figure 4 shows the plant of Figure 1 during the stage of loading the material of the second layer
- Figure 5 shows the plant of Figure 1 during the final stage of loading the material of the second layer
- Figure 6 shows the plant of Figure 1 during the carriage return stage.
- the reference numeral 1 indicates overall a plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production.
- the figures show schematically a press 2 of any known type.
- a die plate 4 and a lower mould die 5 are positioned on the bed 3 of the press 2 to together define the forming cavity 6.
- the cavity 6 can have any shape.
- several cavities 6 can be provided in the same mould to form several tiles simultaneously (multiple mould).
- the vertically movable upper die 7 is positioned on the upper part of the press.
- the cavity (or cavities) 6 is filled with a first material, generally powdered clay, forming the first layer, which is fed by a loading carriage 10 having, for each cavity 6, a loading tray 11 provided with a usual grid having plan dimensions substantially corresponding to those of the forming cavity 6.
- the carriage 10 possesses two lateral sidepieces 12, only one of which is partly visible in the figures, which, to enable it to slide only in a longitudinal horizontal direction, are secured, by guide means 13 of known type, to a fixed support structure 8 provided with feet 9 for its resting on the ground.
- the carriage 10 is driven to and fro in said longitudinal direction by known means, for example a motor-driven crank, not shown, between a retracted position, shown in Figures 1, 2, and an advanced position, shown in Figures 3, 4, in which the tray 11 lies above the cavity 6 into which it releases its contained material.
- known means for example a motor-driven crank, not shown, between a retracted position, shown in Figures 1, 2, and an advanced position, shown in Figures 3, 4, in which the tray 11 lies above the cavity 6 into which it releases its contained material.
- the number of loading compartments 11 provided is equal to the number of cavities 6, they having the same arrangement as the cavities 6.
- the tray 11 slides along and in contact with a horizontal fixed sliding surface 14, coplanar with the upper surface of the die plate 4 and adjacent thereto.
- the surface 14, together with the upper surface of the lower die 5, maintains the bottom of the tray 11 closed while the carriage 10 passes from its retracted position to its advanced position.
- the forming cavity 6 into which the powder falls by gravity is created by lowering the die 5.
- the cavity 6 is fed with a second material by a belt feeder 15 associated with the carriage 10 and described in detail hereinafter.
- the grid-comprising loading tray 11 slides with reciprocating movement within the carriage 10, between a retracted position shown in Figure 1 , in which the tray 11 receives the base material, and an advanced position shown in Figure 3, in which the tray 11 is positioned below the belt feeder 15.
- the drive means for the loading tray 11 can be a system of belts located below the surface 14 and to which the tray becomes coupled after being reversibly released from the carriage 10 by, for example, an actuator 19.
- the tray 11 When in its loading position, retracted on the carriage 10, the tray 11 is loaded with powder material by usual known means.
- these means comprise a fixed discharge hopper 16 orientated transversely to the travel direction of the carriage 10 and loading tray 11 , and with its lower mouth opened and closed by a rotating shutter 17.
- the belt feeder 15, or simply belt has a greater longitudinal dimension than the loading tray 11 for the first material, and is located above said tray 11 when this latter is in its advanced position on the carriage 10.
- the belt 15 is irremovably associated with the carriage 10 at its front end, i.e. that close to the cavity 6.
- the belt 15 is a usual endless belt passing about a pair of rollers 18 at its two ends, and is driven by one of the two rollers 18 provided with a motor. Again in this case, several belts 15 can be provided to feed several cavities simultaneously.
- the belt 15 is loaded with the second material, generally powder colour pigments, to form the second layer in the cavity 6.
- the belt 15 is loaded discontinuously by usual loading means.
- the example shows a colour loading device 20 movable vertically between a lower release position, shown in Figure 1 , and an upper stand ⁇ by position, shown in the remaining figures.
- the plant 1 of the present invention enables a method to be implemented for feeding a double layer of powder or granular material into the cavity 6 of the mould for ceramic tile production
- the carriage 10 In the initial stage of the tile production cycle, the carriage 10 is in its retracted position and the grid-comprising loading tray 11 is in its retracted position on the carriage 10 ( Figure 1).
- the colour loading device 20 is brought into its lower colour release position to rest on the belt 15 associated with the carriage 10.
- the thickness and dimension of the colour layer loaded onto the belt 15 can be defined by a sized screen of known type.
- the grid-comprising tray 11 slides within the carriage 10, which is at rest in its retracted position, to arrive below the belt 15, but without grazing it.
- the tray 11 is loaded with the base clay powders falling from the hopper 16.
- the tray 11 On arriving below the belt 15, the tray 11 is coupled to the carriage 10, the colour loading device 20, which has released the colour layer, then withdrawing from the belt 15 by moving upwards into its stand-by position
- the lower die 5 is lowered by a predetermined amount to form the cavity 6, which receives the base material contained in the overlying tray 11.
- This material flows into the mould cavity 6 by simple gravity action.
- tray 11 is released from the carriage 10 and is coupled to the belt system to begin to retract within the carriage 10 and scrape the powder just loaded into the mould.
- the carriage 10 begins to retract and the cavity 6 is further loaded, after further lowering the lower die 5, by the passage of the belt 15 thereover during the return travel of the carriage 10
- the colour layer is released into the cavity 6 while the carriage 10 returns to its retracted position with simultaneous rotation of the belt 15. Essentially, while the carriage 10 slides rearwards together with the tray
- the belt which has a longitudinal dimension just greater than the underlying tray 11 so as to project beyond it, is rotated to cover the cavity 6 with the colour.
- the rotational speed of the belt 15 is equal to the speed of translation of the underlying carriage
- the tray 11 When the belt 15 arrives below the colour loading device 20, the tray 11 has already reached within the carriage 10 its retracted position, in which it receives the powder.
- the press 2 is closed and the upper die 7 descends into the cavity 6 to form the desired tile ( Figure 1 ).
- a usual rotating brush 22 can be provided, located in the front region of the carriage 10.
- a new loading cycle commences in which the colour loading device 20 rests on the belt 15 and the loading tray 11 slides below the hopper 16 to receive the clay.
- the aforedescribed cycle loads the mould cavity with the base material covered by the complementary second layer of decorative material, the tile being moulded with the decorative material lying above. If the tile is to be moulded in the inverted position, i.e. with the decorative material lying below the base material, the belt merely has to be operated during the carriage advancement movement, so that the fall of the decorative material precedes the fall of the base material.
- the plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production satisfies those requirements and overcomes those drawbacks stated in the introduction to the present description with reference to the known art.
- the feed plant of the present invention enables the belt and tray to be simultaneously loaded, so simultaneously reducing carriage travel.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000097A ITRE20040097A1 (en) | 2004-08-02 | 2004-08-02 | SYSTEM FOR FOOD WITH POWDER OR GRANULAR MATERIAL A DOUBLE LAYER IN THE CAVITY OF THE MOLD FOR THE MANUFACTURE OF CERAMIC TILES |
PCT/EP2005/008072 WO2006013032A1 (en) | 2004-08-02 | 2005-07-22 | Plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1773553A1 true EP1773553A1 (en) | 2007-04-18 |
EP1773553B1 EP1773553B1 (en) | 2009-10-21 |
Family
ID=35033742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05771039A Active EP1773553B1 (en) | 2004-08-02 | 2005-07-22 | Plant for feeding a double layer of powder or granular material into the cavity of the mould for ceramic tile production |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1773553B1 (en) |
CN (1) | CN100589949C (en) |
AT (1) | ATE446174T1 (en) |
DE (1) | DE602005017275D1 (en) |
IT (1) | ITRE20040097A1 (en) |
WO (1) | WO2006013032A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111605971A (en) * | 2020-05-27 | 2020-09-01 | 长春工业大学 | Low-consumption high-efficiency multi-vehicle-type threshold front conveying equipment |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMO20060297A1 (en) * | 2006-09-26 | 2008-03-27 | Lb Officine Meccaniche Spa | APPARATUS AND SLAB |
CN103481359B (en) * | 2013-10-15 | 2015-08-05 | 浙江天晟建材集团有限公司 | A kind of concrete distributing and induction system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1097911A3 (en) * | 1999-11-05 | 2003-12-10 | Lo Scalino S.R.L. | Decorated ceramic tiles, apparatus and method for decorating the same |
EP1145813A1 (en) * | 2000-04-14 | 2001-10-17 | Officina C.M.S. S.R.L. | A cover for closing outlets on pipes, containers, hoppers and the like |
IT1318354B1 (en) * | 2000-07-31 | 2003-08-25 | Giorgio Prodi | GROUP AND METHOD FOR LOADING THE CAVITY OF THE CONMATERIAL MOLD IN POWDER OR GRANULAR, IN THE MANUFACTURE OF TILES |
CN1151094C (en) * | 2001-02-22 | 2004-05-26 | 北京航空材料研究院 | Method and special mold for preparing unfired ceramic element sheet |
-
2004
- 2004-08-02 IT IT000097A patent/ITRE20040097A1/en unknown
-
2005
- 2005-07-22 CN CN200580025087A patent/CN100589949C/en not_active Expired - Fee Related
- 2005-07-22 WO PCT/EP2005/008072 patent/WO2006013032A1/en active Application Filing
- 2005-07-22 EP EP05771039A patent/EP1773553B1/en active Active
- 2005-07-22 DE DE602005017275T patent/DE602005017275D1/en not_active Expired - Fee Related
- 2005-07-22 AT AT05771039T patent/ATE446174T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2006013032A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111605971A (en) * | 2020-05-27 | 2020-09-01 | 长春工业大学 | Low-consumption high-efficiency multi-vehicle-type threshold front conveying equipment |
CN111605971B (en) * | 2020-05-27 | 2021-09-24 | 长春工业大学 | Low-consumption high-efficiency multi-vehicle-type threshold front conveying equipment |
Also Published As
Publication number | Publication date |
---|---|
EP1773553B1 (en) | 2009-10-21 |
ITRE20040097A1 (en) | 2004-11-02 |
WO2006013032A1 (en) | 2006-02-09 |
CN101001728A (en) | 2007-07-18 |
CN100589949C (en) | 2010-02-17 |
ATE446174T1 (en) | 2009-11-15 |
DE602005017275D1 (en) | 2009-12-03 |
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