EP1545848A1 - Method and plant for making ceramic tiles - Google Patents

Method and plant for making ceramic tiles

Info

Publication number
EP1545848A1
EP1545848A1 EP03793675A EP03793675A EP1545848A1 EP 1545848 A1 EP1545848 A1 EP 1545848A1 EP 03793675 A EP03793675 A EP 03793675A EP 03793675 A EP03793675 A EP 03793675A EP 1545848 A1 EP1545848 A1 EP 1545848A1
Authority
EP
European Patent Office
Prior art keywords
blank
die
plant
plate
precompacted
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Withdrawn
Application number
EP03793675A
Other languages
German (de)
French (fr)
Inventor
Pietro Rivola
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sacmi Imola SC
Original Assignee
Sacmi Imola SC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sacmi Imola SC filed Critical Sacmi Imola SC
Publication of EP1545848A1 publication Critical patent/EP1545848A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • B28B13/0205—Feeding the unshaped material to moulds or apparatus for producing shaped articles supplied to the moulding device in form of a coherent mass of material, e.g. a lump or an already partially preshaped tablet, pastil or the like
    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0063—Control arrangements
    • B28B17/0081—Process control
    • 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

Definitions

  • This invention relates to a method and the relative plant for pressing precompacted tiles or slabs of ceramic material.
  • Ceramic tile forming methods consisting of preparing a powder mass, precompacted it to obtain a flat blank of consistent powders, decorating said blank with at least a second layer of powders to form a surface decoration, and finally pressing the decorated blank to obtain the formed tile.
  • the flat blank is generally created by pressing the powder mass to a pressure less than 100 kg/cm 2 , by which the blank is made consistent but fragile.
  • the fragility of the blank makes the operations involved in inserting it into the press cavity difficult.
  • insertion devices are known, which mechanically convey the blank to above the lower die of the press.
  • One of these devices is fully described in Italian patent application RE2001 A000047 in the name of the same applicant, to which reference should be made for a more complete understanding.
  • Said insertion device operates mechanically at least on one of the sides of the precompacted blank to thrust it above the lower die of the press. It has been found that, in particular in the case of large-dimension blanks, this mechanical thrust action causes damage at the points of contact which ruins the edge of the blank.
  • the object of this invention is to overcome the drawbacks of the known art within the framework of a simple and rational solution, the cost of which is lower than the systems of known type.
  • the method of the invention consists of disposing the flat precompacted blanks spaced apart on a conveyor belt; driving said belt to bring that blank to be pressed into a pressing station provided with at least one upper die with which at least one die plate is associated; measuring the position of said precompacted blank relative to the position of the press die by suitable measurement means; comparing the measured values with corresponding preset reference values; on the basis of the result of said comparison positioning the press die with the relative die plate exactly above said blank, and with the same orientation as the blank assumes on the conveyor belt; pressing said precompacted blank to obtain a tile.
  • the position of the precompacted blank in measuring the position of the precompacted blank relative to said press, is measured relative to the press die, or alternatively relative to the die plate associated with the die, or relative to any point rigid with the press.
  • the distance between the edge of the blank and the corresponding sensors provided for said measurement is measured on two consecutive sides of the blank.
  • the data obtained are preferably compared with preset values, the means which position the press die and the relative die plate above the precompacted blank being operated on the basis of the result of this comparison.
  • At least two measurements are taken in two spaced-apart positions on each of the two consecutive sides of the blank, the values being compared with corresponding preset reference values.
  • the method of the invention is implemented by a plant for pressing precompacted flat blanks, comprising a conveyor belt for conveying said blanks into a pressing station provided with an upper die with which a movable die plate is associated, with said pressing station there being associated means for measuring the position of said precompacted blank relative to said die, and means for positioning said die exactly above said blank and with the same orientation as this latter assumes on the conveyor belt.
  • the measurement means are associated with the die plate or with the press die, and comprise at least two position transducers associated with two consecutive sides of the die, each of which measures the distance between the transducer and the corresponding edge of the flat blank to be pressed.
  • a first embodiment of the invention comprises four position transducers associated in pairs with two consecutive sides of the die plate. In this manner, for each side two measurements are taken, their value being compared with corresponding preset reference values.
  • two position transducers are associated with a first side of the die plate and a third transducer with one of the sides consecutive to said first side.
  • the two transducers positioned on said first side of the die plate measure the distance of a first side of the blank, and the third measures the distance of one of the consecutive sides.
  • said operating means comprise a series of cylinder-piston units which act on the sides of a movable plate associated with the upper crosspiece of the press, both the die and the die plate associated with the die being rigid with said movable plate.
  • the cylinder-piston units position the die in the direction transverse to the direction of advancement of the blank on the belt, and orientate the die such that it assumes the same orientation as the blank assumes on the belt, whereas the positioning of the blank in the direction of belt advancement can be accomplished by operating the belt itself.
  • the operating means are able to position the die exactly above the die plate also in the belt advancement direction.
  • Figure 1 is a partly sectional schematic side view of the pressing plant according to the invention.
  • Figure 2 is the section ll-ll of Figure 1.
  • Figure 3 shows the section Ill-Ill of Figure 1 in a first operative position.
  • Figure 4 shows the section Ill-Ill of Figure 1 in a second operative position.
  • Figure 5 shows the same section as Figure 2 in a different stage of operation.
  • Figure 6 is the section VI-VI of Figure 7.
  • Figure 7 is the section VII-VII of Figure 6. Said figures show the pressing plant 1 for implementing the method of the invention.
  • the plant 1 comprises a conveyor belt 2 for conveying the spaced-apart precompacted flat blanks 3 to below a press 4.
  • the blanks 3 are precompacted to a pressure between 10 and 100 kg/cm 2 .
  • the press 4 comprises an upper movable crosspiece 5 provided on two opposing sides with two L-shaped profile bars 6 for supporting a plate 7.
  • the upper die 8 with an associated movable die plate 9 are rigid with the plate 7.
  • the die plate 9 can translate in height relative to the upper crosspiece 5, it being secured to the plate 7 by four cylinder- piston units 10.
  • the plate 7 can rotate relative to the upper crosspiece 5 of the press 1 and translate in a direction transverse to the direction of advancement of the belt 2 by virtue of two hydraulic cylinder-piston units 11 associated with the profile bars 6 which support the plate 7.
  • Each of the cylinder-piston units 11 comprises a cylinder 110 which is inserted into a matching hole in the profile bar 6, and in the interior of which there slides a movable piston 111 carrying a piston rod 112, one end of which emerges from the cylinder 110 to act against an outer side of the plate 7.
  • the operation of said cylinder-piston units 11 is controlled on the basis of the position of the precompacted blank 3 relative to the upper die 8 or to the press die plate 9 associated with the die 8.
  • the position of the precompacted blank 3 is measured by measurement means 12 associated with the press.
  • the measurement means 12 are associated with the press die plate 9 to measure the distance of the closest edge of the precompacted blank.
  • Said means 12 comprise four devices 13, 14 and 15, 16, of which the devices 13 and 14 are disposed on the said side of the die plate 9, and the devices 15 and 16 on one of the consecutive sides.
  • the devices 13 and 14 measure, with reference to the advancement direction of the belt 2, the distance between each device and the front edge of the blank to be pressed, whereas the devices 15 and 16 measure the distance of each device from one of the side edges of the blank.. Two measurements are therefore taken for each side, at points spaced apart.
  • the measured values are fed to a processor, not shown, which processes them and compares them with corresponding preset reference values. It should be noted that the processor calculates the average value of the measurements taken by the devices 13 and 14 and compares this average value with a reference value. Consequently the belt 2 is made to advance until the average value calculated by the processor coincides with the reference value.
  • the processor acquires the readings from the transducers 15 and 16, compares them with the corresponding reference value, and then controls the operation of the cylinder-piston units 11 on the basis of the result of this comparison.
  • the purpose of the cylinder-piston units 11 is to rotate the die in order to orientate it in the same direction as the blank on the belt 2, and to cause the die to translate in a direction transverse to the advancement direction of the belt 2 until it is brought exactly above the precompacted blank. Any required positioning of the die in the belt advancement direction is instead achieved by operating the belt 2.
  • the method of the invention is apparent from the plant description. Specifically, it consists of disposing the precompacted blanks spaced apart on a conveyor belt; driving said belt to bring that blank to be pressed to below a pressing station provided with at least one upper die with which a die plate is associated; measuring the position of said precompacted blank relative to the position of the press die by suitable measurement means; comparing the measured values with corresponding preset reference values; on the basis of the result of said comparison, positioning the press die exactly above said blank, and with the same orientation as the blank assumes on the conveyor belt; then pressing said precompacted blank to obtain a tile.
  • FIGS. 6 and 7 show a variant of the invention which differs from the aforedescribed embodiment essentially with regard to the means for positioning the die and its associated die plate. These figures use the same reference numerals for those components identical to and already described in the first embodiment of the invention. Said figures show that the plate 7 is supported by an L-shaped perimetral frame 20 with which the positioning means for said plate are associated. Specifically, said means comprise eight hydraulic cylinder-piston units 21 associated in pairs with each side of the perimetral frame 20.
  • the die 8 to be positioned above the blank to be pressed both in the direction transverse to the advancement direction of the belt 2 and in the same direction as the belt.
  • the die can be positioned exactly with the same orientation as the blank assumes on the belt.
  • the means 12 for measuring the position of the blank comprise four devices 13, 14 and 15, 16, of which the devices 13 and 14 are disposed on the same side of the die plate 9, and the devices 15 and 16 on one of the consecutive sides.
  • just three measurement devices could instead be used, of which two are provided to measure the distance of one side of the blank, and one is provided to measure the distance of one of those two sides of the blank consecutive to the preceding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

Method for pressing precompacted flat blanks comprising the following operative stages: disposing the precompacted blanks spaced apart on a conveyor belt; driving said belt to bring that blank to be pressed below a pressing station provided with at least one upper die with which a die plate is associated; measuring the position of said precompacted blank relative to the position of the press die by suitable measurement means; comparing the measured values with corresponding preset reference values; on the basis of the result of said comparison, positioning the press die exactly above said blank and with the same orientation as the blank assumes on the conveyor belt; pressing said precompacted blank to obtain a tile.

Description

METHOD AND PLANT FOR MAKING CERAMIC TILES
TECHNICAL FIELD
This invention relates to a method and the relative plant for pressing precompacted tiles or slabs of ceramic material.
BACKGROUND ART Ceramic tile forming methods are known consisting of preparing a powder mass, precompacted it to obtain a flat blank of consistent powders, decorating said blank with at least a second layer of powders to form a surface decoration, and finally pressing the decorated blank to obtain the formed tile. The flat blank is generally created by pressing the powder mass to a pressure less than 100 kg/cm2, by which the blank is made consistent but fragile. The fragility of the blank makes the operations involved in inserting it into the press cavity difficult. For this purpose insertion devices are known, which mechanically convey the blank to above the lower die of the press. One of these devices is fully described in Italian patent application RE2001 A000047 in the name of the same applicant, to which reference should be made for a more complete understanding. Said insertion device operates mechanically at least on one of the sides of the precompacted blank to thrust it above the lower die of the press. It has been found that, in particular in the case of large-dimension blanks, this mechanical thrust action causes damage at the points of contact which ruins the edge of the blank.
The object of this invention is to overcome the drawbacks of the known art within the framework of a simple and rational solution, the cost of which is lower than the systems of known type.
DISCLOSURE OF THE INVENTION
The invention attains said object by virtue of the characteristics defined in the claims. Specifically, the method of the invention consists of disposing the flat precompacted blanks spaced apart on a conveyor belt; driving said belt to bring that blank to be pressed into a pressing station provided with at least one upper die with which at least one die plate is associated; measuring the position of said precompacted blank relative to the position of the press die by suitable measurement means; comparing the measured values with corresponding preset reference values; on the basis of the result of said comparison positioning the press die with the relative die plate exactly above said blank, and with the same orientation as the blank assumes on the conveyor belt; pressing said precompacted blank to obtain a tile.
According to a preferred embodiment, in measuring the position of the precompacted blank relative to said press, the position of the precompacted blank is measured relative to the press die, or alternatively relative to the die plate associated with the die, or relative to any point rigid with the press. In measuring the position of the blank, the distance between the edge of the blank and the corresponding sensors provided for said measurement is measured on two consecutive sides of the blank. The data obtained are preferably compared with preset values, the means which position the press die and the relative die plate above the precompacted blank being operated on the basis of the result of this comparison.
According to one embodiment of the invention, at least two measurements are taken in two spaced-apart positions on each of the two consecutive sides of the blank, the values being compared with corresponding preset reference values.
The method of the invention is implemented by a plant for pressing precompacted flat blanks, comprising a conveyor belt for conveying said blanks into a pressing station provided with an upper die with which a movable die plate is associated, with said pressing station there being associated means for measuring the position of said precompacted blank relative to said die, and means for positioning said die exactly above said blank and with the same orientation as this latter assumes on the conveyor belt. The measurement means are associated with the die plate or with the press die, and comprise at least two position transducers associated with two consecutive sides of the die, each of which measures the distance between the transducer and the corresponding edge of the flat blank to be pressed. The measured data are transmitted to a processor which processes them and/or compares them with preset sample data, and then activates said operating means to position the die exactly above the blank. A first embodiment of the invention comprises four position transducers associated in pairs with two consecutive sides of the die plate. In this manner, for each side two measurements are taken, their value being compared with corresponding preset reference values. In a different embodiment of the invention, two position transducers are associated with a first side of the die plate and a third transducer with one of the sides consecutive to said first side.
In this case the two transducers positioned on said first side of the die plate measure the distance of a first side of the blank, and the third measures the distance of one of the consecutive sides.
According to the invention said operating means comprise a series of cylinder-piston units which act on the sides of a movable plate associated with the upper crosspiece of the press, both the die and the die plate associated with the die being rigid with said movable plate. In a first embodiment the cylinder-piston units position the die in the direction transverse to the direction of advancement of the blank on the belt, and orientate the die such that it assumes the same orientation as the blank assumes on the belt, whereas the positioning of the blank in the direction of belt advancement can be accomplished by operating the belt itself. In a different embodiment of the invention the operating means are able to position the die exactly above the die plate also in the belt advancement direction.
In order to better clarify the method of the invention and the relative plant, a preferred embodiment thereof is described hereinafter by way of non- limiting example and illustrated in the accompanying drawings. Figure 1 is a partly sectional schematic side view of the pressing plant according to the invention.
Figure 2 is the section ll-ll of Figure 1.
Figure 3 shows the section Ill-Ill of Figure 1 in a first operative position. Figure 4 shows the section Ill-Ill of Figure 1 in a second operative position.
Figure 5 shows the same section as Figure 2 in a different stage of operation.
Figure 6 is the section VI-VI of Figure 7.
Figure 7 is the section VII-VII of Figure 6. Said figures show the pressing plant 1 for implementing the method of the invention.
The plant 1 comprises a conveyor belt 2 for conveying the spaced-apart precompacted flat blanks 3 to below a press 4.
The blanks 3 are precompacted to a pressure between 10 and 100 kg/cm2.
As can be seen from Figure 1 , below the conveyor belt 2, in correspondence with the press 4, a plate 100 is present to act as an "anvil" during pressing.
The press 4 comprises an upper movable crosspiece 5 provided on two opposing sides with two L-shaped profile bars 6 for supporting a plate 7.
The upper die 8 with an associated movable die plate 9 are rigid with the plate 7. In this respect, the die plate 9 can translate in height relative to the upper crosspiece 5, it being secured to the plate 7 by four cylinder- piston units 10. With reference to Figures 3 and 4 the plate 7 can rotate relative to the upper crosspiece 5 of the press 1 and translate in a direction transverse to the direction of advancement of the belt 2 by virtue of two hydraulic cylinder-piston units 11 associated with the profile bars 6 which support the plate 7. Each of the cylinder-piston units 11 comprises a cylinder 110 which is inserted into a matching hole in the profile bar 6, and in the interior of which there slides a movable piston 111 carrying a piston rod 112, one end of which emerges from the cylinder 110 to act against an outer side of the plate 7. The operation of said cylinder-piston units 11 is controlled on the basis of the position of the precompacted blank 3 relative to the upper die 8 or to the press die plate 9 associated with the die 8. The position of the precompacted blank 3 is measured by measurement means 12 associated with the press. In the illustrated embodiment, the measurement means 12 are associated with the press die plate 9 to measure the distance of the closest edge of the precompacted blank. Said means 12 comprise four devices 13, 14 and 15, 16, of which the devices 13 and 14 are disposed on the said side of the die plate 9, and the devices 15 and 16 on one of the consecutive sides. The devices 13 and 14 measure, with reference to the advancement direction of the belt 2, the distance between each device and the front edge of the blank to be pressed, whereas the devices 15 and 16 measure the distance of each device from one of the side edges of the blank.. Two measurements are therefore taken for each side, at points spaced apart. The measured values are fed to a processor, not shown, which processes them and compares them with corresponding preset reference values. It should be noted that the processor calculates the average value of the measurements taken by the devices 13 and 14 and compares this average value with a reference value. Consequently the belt 2 is made to advance until the average value calculated by the processor coincides with the reference value.
When the belt has stopped, the processor acquires the readings from the transducers 15 and 16, compares them with the corresponding reference value, and then controls the operation of the cylinder-piston units 11 on the basis of the result of this comparison. The purpose of the cylinder-piston units 11 is to rotate the die in order to orientate it in the same direction as the blank on the belt 2, and to cause the die to translate in a direction transverse to the advancement direction of the belt 2 until it is brought exactly above the precompacted blank. Any required positioning of the die in the belt advancement direction is instead achieved by operating the belt 2.
Pressing then takes place at a pressure between 200 and 500 kg/cm 2. The method of the invention is apparent from the plant description. Specifically, it consists of disposing the precompacted blanks spaced apart on a conveyor belt; driving said belt to bring that blank to be pressed to below a pressing station provided with at least one upper die with which a die plate is associated; measuring the position of said precompacted blank relative to the position of the press die by suitable measurement means; comparing the measured values with corresponding preset reference values; on the basis of the result of said comparison, positioning the press die exactly above said blank, and with the same orientation as the blank assumes on the conveyor belt; then pressing said precompacted blank to obtain a tile.
According to the method of the invention, on termination of pressing the die remains resting on the tile while the die plate is raised to free its periphery. The die is then also raised and the conveyor belt conveys the thus formed tile to the outside of the pressing station. Figures 6 and 7 show a variant of the invention which differs from the aforedescribed embodiment essentially with regard to the means for positioning the die and its associated die plate. These figures use the same reference numerals for those components identical to and already described in the first embodiment of the invention. Said figures show that the plate 7 is supported by an L-shaped perimetral frame 20 with which the positioning means for said plate are associated. Specifically, said means comprise eight hydraulic cylinder-piston units 21 associated in pairs with each side of the perimetral frame 20. This enables the die 8 to be positioned above the blank to be pressed both in the direction transverse to the advancement direction of the belt 2 and in the same direction as the belt. In addition, by means of said cylinder- piston units the die can be positioned exactly with the same orientation as the blank assumes on the belt.
Finally, in the illustrated embodiment of the invention the means 12 for measuring the position of the blank comprise four devices 13, 14 and 15, 16, of which the devices 13 and 14 are disposed on the same side of the die plate 9, and the devices 15 and 16 on one of the consecutive sides. However just three measurement devices could instead be used, of which two are provided to measure the distance of one side of the blank, and one is provided to measure the distance of one of those two sides of the blank consecutive to the preceding.

Claims

1. A method for pressing precompacted flat ceramic blanks, comprising the following operative stages: a. disposing the precompacted blanks spaced apart on a conveyor belt; b. driving said belt to bring that blank to be pressed below a pressing station provided with at least one upper die with which a die plate is associated; c. measuring the position of said precompacted blank relative to the position of the press die by suitable measurement means; d. comparing the measured values with corresponding preset reference values; e. on the basis of the result of said comparison, positioning the press die exactly above said blank and with the same orientation as the blank assumes on the conveyor belt; f. pressing said precompacted blank to obtain a tile.
2. A method as claimed in claim 1 , characterised in that said measurement operation consists of measuring the distance between the edge of the blank and the measurement device, said measurement being taken on at least two consecutive sides of the blank.
3. A method as claimed in claim 2, characterised in that said distance is measured in two different positions at least on a first side of the blank.
4. A method as claimed in claim 3, characterised in that said distance is measured in at least one position on at least one side of the blank consecutive to said first side.
5. A method as claimed in claim 2, characterised in that said distance is measured on at least two consecutive sides of the blank in at least two different positions for each side.
6. A method as claimed in claim 1 , characterised in that after pressing, the die is left resting on the formed tile whereas the die plate is raised to free its perimeter.
7. A method as claimed in claim 6, characterised in that after raising the die plate the die is also raised and the conveyor belt driven to remove the formed tile from the pressing station.
8. A method as claimed in claim 1 , characterised in that said tile is precompacted to a pressure preferably between 10 and 100 kg/cm2.
9. A method as claimed in claim 1 , characterised in that said pressing of the precompacted tile takes place at a pressure preferably between 200 and 500 kg/cm2.
10. A plant for pressing precompacted flat blanks, comprising a conveyor belt for conveying said blanks to below a pressing station provided with an upper die with which a movable die plate is associated, characterised by comprising means for measuring the position of said precompacted blank relative to said die, means for comparing the data determined by said measurement means with reference values, and means for positioning said die exactly above said blank and with the same orientation as this latter assumes on the conveyor belt.
11. A plant as claimed in claim 10, characterised in that said measurement means are associated with said die plate.
12. A plant as claimed in claim 11 , characterised in that said measurement means are at least one pair of position sensors or transducers associated with at least one side of the die plate.
13. A plant as claimed in claim 11 , characterised in that said measurement means are at least two pairs of position sensors or transducers associated with two consecutive sides of said die plate.
14. A plant as claimed in claim 10, characterised in that said means for comparing the determined data with reference values comprise a processor.
15. A plant as claimed in claim 10, characterised in that said die and said die plate are supported by a plate associated with the upper crosspiece of the press.
16. A plant as claimed in claim 15, characterised in that said plate can rotate and translate relative to said upper crosspiece.
17. A plant as claimed in claim 15, characterised in that said plate is associated with said upper crosspiece by means of two profile bars which support the perimetral edges of two opposing sides of the plate.
18. A plant as claimed in claim 15, characterised in that said plate is associated with said crosspiece by means of an L-shaped perimetral frame.
19. A plant as claimed in claim 16, characterised in that said operating means act on the edges of said plate.
20. A plant as claimed in claim 17, characterised in that said operating means comprise at least two pairs of cylinder-piston units arranged to act on two opposing sides of said plate.
21. A plant as claimed in claim 17, characterised in that said operating means comprise eight cylinder-piston units arranged to act in pairs on each side of the plate.
22. A plant as claimed in claim 20, characterised in that said operating means also comprise said conveyor belt.
EP03793675A 2002-09-05 2003-08-01 Method and plant for making ceramic tiles Withdrawn EP1545848A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000066A ITRE20020066A1 (en) 2002-09-05 2002-09-05 METHOD AND PLANT FOR PRESSING ARTICLES OR
ITRE20020066 2002-09-05
PCT/EP2003/008584 WO2004022296A1 (en) 2002-09-05 2003-08-01 Method and plant for making ceramic tiles

Publications (1)

Publication Number Publication Date
EP1545848A1 true EP1545848A1 (en) 2005-06-29

Family

ID=11454263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793675A Withdrawn EP1545848A1 (en) 2002-09-05 2003-08-01 Method and plant for making ceramic tiles

Country Status (7)

Country Link
EP (1) EP1545848A1 (en)
CN (1) CN100434250C (en)
AU (1) AU2003250208A1 (en)
IT (1) ITRE20020066A1 (en)
MX (1) MXPA05002481A (en)
RU (1) RU2323085C2 (en)
WO (1) WO2004022296A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106378858A (en) * 2016-11-14 2017-02-08 佛山市石湾陶瓷工业研究所有限公司 Equipment for pressing ceramic green bricks
RU2712695C1 (en) * 2019-01-10 2020-01-30 Акционерное общество "Корпорация "Росхимзащита" Method of manufacturing a block regenerative product

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Publication number Priority date Publication date Assignee Title
NL8802567A (en) * 1988-10-18 1990-05-16 Sneek Hubert Maschf STRAND HOLDER FOR STONE MACHINE.
IT1287473B1 (en) * 1996-09-13 1998-08-06 Emilceramica S P A DEVICE FOR DECORATING CERAMIC TILES
ITRE20010047A1 (en) * 2001-05-08 2002-11-08 Sacmi PLANT FOR THE FORMING OF LARGE CERAMIC TILES, AND METHOD

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004022296A1 *

Also Published As

Publication number Publication date
WO2004022296A1 (en) 2004-03-18
MXPA05002481A (en) 2005-05-27
RU2005110055A (en) 2006-01-20
CN100434250C (en) 2008-11-19
AU2003250208A1 (en) 2004-03-29
CN1678438A (en) 2005-10-05
ITRE20020066A1 (en) 2004-03-06
ITRE20020066A0 (en) 2002-09-05
RU2323085C2 (en) 2008-04-27

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