EP1211034B1 - Tile press with belt charging devices - Google Patents
Tile press with belt charging devices Download PDFInfo
- Publication number
- EP1211034B1 EP1211034B1 EP20010204435 EP01204435A EP1211034B1 EP 1211034 B1 EP1211034 B1 EP 1211034B1 EP 20010204435 EP20010204435 EP 20010204435 EP 01204435 A EP01204435 A EP 01204435A EP 1211034 B1 EP1211034 B1 EP 1211034B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- mold
- press
- ridges
- carriage
- 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.)
- Expired - Lifetime
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Images
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
- 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
-
- 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 press for tile pressing molds having an innovative charging device and in particular for creating colored streaks and veins in the mass.
- WO 98/23424 discloses a press according to the preamble of claim 1, with a conveyor belt movable to carry powders from a powder feeding unit to the discharge position over the mold.
- a further, widely used system consists of a drawer with dimensions similar to the cavity of the mold to be filled.
- the drawer is open at the bottom and has rods for drawing the powders to be pressed. It runs on a plane from a charging position outside the mold to a dumping position vertically above the mold where the powders are dumped.
- the drawer includes a powered belt which receives the powders and dumps them from its lead end into the mold.
- the general purpose of the present invention is to remedy the above mentioned shortcomings by making available a press with a charging device allowing satisfactory powder distribution in the mold in particular when there is a plurality of powders for providing streaks and color variations in the tile mass.
- Figure 1 and 2 show diagrammatically a press for pressing tiles designated as a whole by reference number 10 and comprising a pressing mold 11 arranged between press plates 12, 13 and a charging device 14.
- the charging device comprises a charging carriage 15 powered to be movable between the charging position shown in solid lines in Fig. 1 outside the press plates and a position partially shown in hatching of dumping into the mold.
- a conveyor belt 16 powered to run on command, possibly on a supporting table 17, between transmission rollers 18, 19 arranged at the head and tail of the carriage in relation to the carriage's movement into and out of the press plates.
- the belt should be at least as wide as the mold compartment.
- the charging device comprises a hopper feeding unit 20 which dumps the powders for making the tile onto the belt below.
- This feed unit is basically prior art and therefore not further described nor shown. It should include dumping hoppers for the various powders it is desired to use in making the tiles. For example, there may be provided a main hopper to dump the powder for making the tile mass and at least one secondary hopper to dump powder for making the streaks or veining in the mass. Dumping from the hoppers should take place in quantities and at intervals differing according to the specific aesthetic effect it is desired to obtain.
- the carriage advantageously comprises a scraper 21 and a powered brush 22 for cleaning the mold while the carriage is travelling.
- the surface of the belt which receives the powder comprises ridges 23 protruding from the surface.
- the ridges can have various forms depending on the effect it is desired to achieve.
- Fig. 2 shows ridges 23 arranged on the belt along transverse lines.
- Figures 3 and 5 show ridges which are, respectively, inclined and straight, inclined and wavy or directed along lines arranged variously to mutually intersect on the belt surface more or less randomly.
- Figures 6 and 7 show variant embodiments of the structure of the ridges allowing the belt to turn around the transmission rollers.
- the ridges are broken at intervals so as to form segments which open when the belt bends around the rollers.
- rollers are unbroken and made of relatively yielding material such as for example rubber to allow their distortion and lowering on the belt when the belt bends on the rollers.
- This second embodiment was found to be particularly beneficial to gain a more diffuse dumping effect of the powders and improve the aesthetic result when it is desired to obtain a shaded streaked color effect in the tile mass.
- the ridges can be molded in a single piece with the belt or attached in a way readily imaginable to those skilled in the art.
- Fig. 8 shows a plan view of a variant embodiment of the press in which a mold with multiple cavities (11a, 11b, 11c) for performing multiple pressings is provided.
- the charging device consequently comprises a belt conveyor 14 broad enough to feed all the side by side cavities.
- Fig. 8 also shows additional ridges 25 transversal to the belt and arranged with a pitch virtually equal to the length of the mold in the direction of movement of the belt.
- powder dumping will be synchronized with the belt movement in such a manner that the space delimited between two transversal ridges 25 will receive all the powder intended for a cavity.
- the carriage is retracted to the starting position of Fig. 1 .
- the carriage is operated to advance towards the mold and simultaneously the feed unit 20 discharges the necessary powders with the desired arrangement for tile production. In this manner the belt passes beneath the hopper which dumps and the powder is distributed along the belt.
- Discharging of the powders from the hopper terminates when the desired amount of powder is reached while advancing movement of the carriage terminates when the carriage has travelled the entire mold and the belt has reached its extreme advanced position as shown hatched in Fig. 1 .
- the carriage is commanded to return to its starting or charging position and during the return travel of the carriage the belt is made to run forward at a speed virtually equal to the carriage movement speed.
- the powders on the belt are dumped uniformly in the mold.
- the speed of rotation of the belt is equal to the return speed of the carriage, the relative speed of the powders is practically null with the powders falling vertically into the mold to avoid the dragging effects of prior art drawer devices.
- the ridges could be obtained either by cutting the belt in low relief, molding it directly with the ridges, or adding the ridges on its surface later.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Description
- The present invention relates to a press for tile pressing molds having an innovative charging device and in particular for creating colored streaks and veins in the mass.
- In tile production the problem of depositing powders in the mold and in particular for creating streaks in the mass, for example to simulate the form and distribution of streaks found in natural stone, is known.
- In the prior art various devices for depositing powder in the pressing mold have been proposed.
WO 98/23424 claim 1, with a conveyor belt movable to carry powders from a powder feeding unit to the discharge position over the mold. - A further, widely used system consists of a drawer with dimensions similar to the cavity of the mold to be filled. The drawer is open at the bottom and has rods for drawing the powders to be pressed. It runs on a plane from a charging position outside the mold to a dumping position vertically above the mold where the powders are dumped.
- As alternatives there have been proposed belt chargers where the drawer includes a powered belt which receives the powders and dumps them from its lead end into the mold.
- All these devices have been found to have various disadvantages and especially for pressing tiles with color variations in the mass and are not entirely satisfactory. For example known systems easily destroy the color variation effects during deposit of the powders in the mold.
- The general purpose of the present invention is to remedy the above mentioned shortcomings by making available a press with a charging device allowing satisfactory powder distribution in the mold in particular when there is a plurality of powders for providing streaks and color variations in the tile mass.
- In view of this purpose it is sought to realize in accordance with the present invention a tile pressing press having the features recited in
claim 1. - To clarify the explanation of the innovative principles of the present invention and its advantages compared with the prior art there is described below with the aid of the annexed drawings a possible embodiment thereof by way of non-limiting example applying said principles. In the drawings:
-
Fig. 1 shows a diagrammatic side elevation view cross-sectioned along plane of cut I-I ofFig. 2 of a press with charging devices realized in accordance with the present invention, -
Fig. 2 shows a diagrammatic plan view of the press ofFig. 1 , -
Figs. 3 to 5 show diagrammatic views of possible surface configurations of belts of the charging devices, of which that ofFig. 5 is a configuration in accordance with the present invention, -
Figs. 6 and 7 show diagrammatic partial views of possible design details of the belts in accordance with the present invention, and -
Fig. 8 shows a plan view of a variant of the press ofFig. 2 . - With reference to the figures,
Figure 1 and2 show diagrammatically a press for pressing tiles designated as a whole byreference number 10 and comprising apressing mold 11 arranged betweenpress plates charging device 14. The charging device comprises a chargingcarriage 15 powered to be movable between the charging position shown in solid lines inFig. 1 outside the press plates and a position partially shown in hatching of dumping into the mold. On the carriage is installed aconveyor belt 16 powered to run on command, possibly on a supporting table 17, betweentransmission rollers - Above the carriage the charging device comprises a
hopper feeding unit 20 which dumps the powders for making the tile onto the belt below. This feed unit is basically prior art and therefore not further described nor shown. It should include dumping hoppers for the various powders it is desired to use in making the tiles. For example, there may be provided a main hopper to dump the powder for making the tile mass and at least one secondary hopper to dump powder for making the streaks or veining in the mass. Dumping from the hoppers should take place in quantities and at intervals differing according to the specific aesthetic effect it is desired to obtain. - In front of the belt the carriage advantageously comprises a scraper 21 and a powered
brush 22 for cleaning the mold while the carriage is travelling. - As shown by way of example in
Fig. 1 the surface of the belt which receives the powder comprisesridges 23 protruding from the surface. - It was found that by using belt ridges the quality of the aesthetic effects reproduced by the powders improves greatly as compared with known deposit devices.
- The ridges can have various forms depending on the effect it is desired to achieve.
-
Fig. 2 showsridges 23 arranged on the belt along transverse lines. -
Figures 3 and 5 show ridges which are, respectively, inclined and straight, inclined and wavy or directed along lines arranged variously to mutually intersect on the belt surface more or less randomly. -
Figures 6 and 7 show variant embodiments of the structure of the ridges allowing the belt to turn around the transmission rollers. InFig. 6 the ridges are broken at intervals so as to form segments which open when the belt bends around the rollers. - In
Fig. 7 the rollers are unbroken and made of relatively yielding material such as for example rubber to allow their distortion and lowering on the belt when the belt bends on the rollers. This second embodiment was found to be particularly beneficial to gain a more diffuse dumping effect of the powders and improve the aesthetic result when it is desired to obtain a shaded streaked color effect in the tile mass. - The ridges can be molded in a single piece with the belt or attached in a way readily imaginable to those skilled in the art.
- It was found beneficial that the belt ridges be virtually as high as the mold is deep.
-
Fig. 8 shows a plan view of a variant embodiment of the press in which a mold with multiple cavities (11a, 11b, 11c) for performing multiple pressings is provided. The charging device consequently comprises abelt conveyor 14 broad enough to feed all the side by side cavities. There can be provided multiple independent belts separated bylongitudinal dividers 24 or a single belt divided in strips bylongitudinal dividers 24 which can be fastened on the belt and run therewith or separate with each belt or strip serving a cavity. -
Fig. 8 also showsadditional ridges 25 transversal to the belt and arranged with a pitch virtually equal to the length of the mold in the direction of movement of the belt. In this case powder dumping will be synchronized with the belt movement in such a manner that the space delimited between twotransversal ridges 25 will receive all the powder intended for a cavity. - In use, whether for the one-cavity or the multiple-cavity version the operational steps can advantageously be carried out as explained below.
- Initially the carriage is retracted to the starting position of
Fig. 1 . The carriage is operated to advance towards the mold and simultaneously thefeed unit 20 discharges the necessary powders with the desired arrangement for tile production. In this manner the belt passes beneath the hopper which dumps and the powder is distributed along the belt. - Discharging of the powders from the hopper terminates when the desired amount of powder is reached while advancing movement of the carriage terminates when the carriage has travelled the entire mold and the belt has reached its extreme advanced position as shown hatched in
Fig. 1 . - Now the carriage is commanded to return to its starting or charging position and during the return travel of the carriage the belt is made to run forward at a speed virtually equal to the carriage movement speed. In this manner the powders on the belt are dumped uniformly in the mold. As the speed of rotation of the belt is equal to the return speed of the carriage, the relative speed of the powders is practically null with the powders falling vertically into the mold to avoid the dragging effects of prior art drawer devices.
- Thanks to the ridges on the belt the various aesthetic effects deposited in advance on the belt are reproduced faithfully in the mold cavity, possibly with controlled spreading effects as mentioned above.
- Once charging of the mold is finished normal pressing and unloading of the pressed tile can be performed. The charging operations can then be started over.
- It is now clear that the predetermined purposes have been achieved by making available a press with a powder charging device providing a precise distribution of the powders in the mold and the desired colored designs in the mass.
- For example the ridges could be obtained either by cutting the belt in low relief, molding it directly with the ridges, or adding the ridges on its surface later.
Claims (8)
- Press for pressing tiles comprising a pressing mold (11) into which a charging device (14) dumps powders to be pressed with the charging device (14) comprising a conveyor belt (16) onto which are dumped the powders to be dumped into the mold (11) and which is caused to run over the mold (11) to dump the powders from one of its ends into the mold, the belt surface comprises ridges for receiving the powder, whereby the belt is carried by a moving carriage (15) to cause the discharge end of the belt (16) to run over the mold starting from a retracted carriage position in which the belt is outside the mold (11) and in the section of movement of the carriage outside the mold with the carriage (15) carrying the belt to run under hoppers (20) pouring powders onto the belt characterised in that the belt ridges are arranged along lines arranged variously to intersect on the belt surface, the press comprising means for making the belt run forward at a speed virtually equal to the carriage movement speed to discharge into the mold from the lead end of the belt the powders thereon during the return travel of the carriage towards the charging position.
- Press in accordance with claim 1, characterized in that the belt ridges (23) are arranged along lines inclined to the belt (16).
- Press in accordance with claim 1, characterized in that the belt ridges (23) are broken at intervals to define segments adapted to open when the belt (16) is curved around its transmission rollers (18, 19).
- Press in accordance with claim 1, characterized in that the belt ridges (23) are made of rubber material to allow their distortion and lowering on the belt (16) when the belt is curved around its transmission rollers (18, 19).
- Press in accordance with claim 1, characterized in that the belt ridges (23) are virtually as high as the mold (11) is deep.
- Press in accordance with claim 1, characterized in that on the belt (16) are arranged additional ridges (25) transversal to the belt (16) with a pitch virtually equal to the length of the mold (11) in the direction of movement of the belt (16).
- Press in accordance with claim 1, characterized in that it comprises multiple parallel belts (16) of which each one discharges into a cavity (11a, 11b, 11c) of the mold (11).
- Press in accordance with claim 1, characterized in that it comprises multiple molding cavities (11a, 11b, 11c) side by side and a belt (16) sufficiently broad to feed all the side by side cavities (11a, 11b, 11c), with the belt (16) being divided in strips by longitudinal dividers (24) and each strip serving one cavity.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI20002537 IT1320102B1 (en) | 2000-11-24 | 2000-11-24 | PRESS FOR THE PRODUCTION OF TILES, EQUIPPED WITH TAPE LOADING DEVICES. |
ITMI202537 | 2000-11-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1211034A2 EP1211034A2 (en) | 2002-06-05 |
EP1211034A3 EP1211034A3 (en) | 2003-06-11 |
EP1211034B1 true EP1211034B1 (en) | 2015-05-06 |
Family
ID=11446140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010204435 Expired - Lifetime EP1211034B1 (en) | 2000-11-24 | 2001-11-21 | Tile press with belt charging devices |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1211034B1 (en) |
ES (1) | ES2544227T3 (en) |
IT (1) | IT1320102B1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITRE20030082A1 (en) * | 2003-09-15 | 2005-03-16 | Sacmi | METHOD AND PLANT FOR FORMING TILES OR CERAMIC SHEETS. |
ITMO20050106A1 (en) * | 2005-04-29 | 2006-10-30 | R P Srl | APPARATUS, AND METHOD, FOR THE FEEDING OF MOLDS PRESS, IN THE FORMING OF TILES OR SIMILAR PRODUCTS. |
ITFI20070041A1 (en) * | 2007-02-20 | 2008-08-21 | O C E M Officina Costruzioni Elettro Meccaniche | EQUIPMENT TO SUPPLY THE MATERIAL TO THE MOLDS FOR GRID TILES AND CEMENT. |
CN101049712B (en) * | 2007-05-11 | 2011-02-09 | 付振顶 | Flip-flop forming machine for heat preservation building module blocks |
CN102303356B (en) * | 2011-09-05 | 2013-06-19 | 佛山市河之舟机电有限公司 | Material distribution method for forming longitudinal and transverse lines on surface of polished tile and device thereof |
CN103465362B (en) * | 2013-09-17 | 2016-01-27 | 佛山市卓益机电有限公司 | A kind of apparatus for distributing producing high simulative stone material |
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 |
CN103878866B (en) * | 2014-02-19 | 2016-09-14 | 山东中润锦华节能科技有限公司 | A kind of automatic compressing system produced for waterglass expanded and vitrified small ball light thermal insulation board |
CN104118042B (en) * | 2014-07-18 | 2017-03-01 | 佛山市东鹏陶瓷有限公司 | A kind of crawler type moulding cloth shotcreting process of superfine line texture |
CN104118037A (en) * | 2014-07-18 | 2014-10-29 | 佛山市东鹏陶瓷有限公司 | Crawler type moulding, material-distributing and color-paste-spraying device for obtaining super-fine line texture |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1210289B (en) * | 1987-05-14 | 1989-09-14 | Co Em Spa | DEVICE FOR AUTOMATIC AND UNIFORM LOADING OF MOLDS OF PRESSES FOR THE FORMATION OF CERAMIC MANUFACTURES, IN PARTICULAR TILES |
IT1287505B1 (en) * | 1996-11-22 | 1998-08-06 | Algeri Maris | Continuous pressing method and plant for production of tiles - involves controlled discharge of contained layer of powder on conveyor belt that advances through pre-pressing rollers to mould and pressing punch |
EP1097911A3 (en) * | 1999-11-05 | 2003-12-10 | Lo Scalino S.R.L. | Decorated ceramic tiles, apparatus and method for decorating the same |
-
2000
- 2000-11-24 IT ITMI20002537 patent/IT1320102B1/en active
-
2001
- 2001-11-21 ES ES01204435.0T patent/ES2544227T3/en not_active Expired - Lifetime
- 2001-11-21 EP EP20010204435 patent/EP1211034B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ITMI20002537A1 (en) | 2002-05-24 |
IT1320102B1 (en) | 2003-11-18 |
EP1211034A2 (en) | 2002-06-05 |
ES2544227T3 (en) | 2015-08-28 |
EP1211034A3 (en) | 2003-06-11 |
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