EP2763845B1 - Dispositif et procédé permettant de compacter un matériau en poudre - Google Patents

Dispositif et procédé permettant de compacter un matériau en poudre Download PDF

Info

Publication number
EP2763845B1
EP2763845B1 EP12772426.8A EP12772426A EP2763845B1 EP 2763845 B1 EP2763845 B1 EP 2763845B1 EP 12772426 A EP12772426 A EP 12772426A EP 2763845 B1 EP2763845 B1 EP 2763845B1
Authority
EP
European Patent Office
Prior art keywords
compacting
layer
powder material
row
advancement
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.)
Active
Application number
EP12772426.8A
Other languages
German (de)
English (en)
Other versions
EP2763845A1 (fr
Inventor
Marco Salieri
Alan Babini
Silvano Valli
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 EP2763845A1 publication Critical patent/EP2763845A1/fr
Application granted granted Critical
Publication of EP2763845B1 publication Critical patent/EP2763845B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • 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
    • 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
    • B30B5/065—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 using anti-friction means for the pressing band

Definitions

  • the present invention regards a device for compacting a layer of powder material, mainly in the field of forming ceramic tiles or slabs.
  • a slidable transport surface on which there is progressively supplied a ceramic powder, so as to form a layer.
  • the transport surface is generally defined by a slidable and fixable conveyor belt.
  • the layer of powder is advanced by the transport surface through a compacting station of the continuous type, i.e. which is adapted to compact the layer of powder as it progressively advances on the transport surface.
  • the compacting station generally comprises two flexible compacting surfaces, mutually superimposed and both slidable in the same direction of the transport surface. Also the compacting surfaces are usually defined by a respective slidable and flexible belt.
  • the lower compacting surface is arranged beneath and at contact with the transport surface, so that it supportingly rests thereon, while the upper compacting surface is arranged at a given height above the transport surface.
  • the compacting surfaces are guided to slide between special pressing means, for example between a pair of superimposed rollers, which maintain the upper compacting surface locally pressed towards the lower compacting surface, so as to press the layer of powders which is located on the transport surface.
  • the compacting station usually also comprises two parallel lateral edges, which are adapted to laterally contain the layer of ceramic powder on the transport surface during compacting, so as to make the apparent density of the layer of powder more uniform in the direction of the width. These lateral edges are elastically yieldable, so as to be able to be compressed under the effect of the compacting surfaces. Downstream of the compacting station, the transport surface lastly advances the layer of compacted powder through a subsequent cutting station, which is adapted to divide it into single slabs of desired dimensions.
  • the compacting pressure that can be provided on the layer of powder with a forming device of the type outlined above is currently limited to relatively low values, about up to a maximum of 200 Kg/cm 2 , which are usually insufficient to obtain the quality finished products.
  • the slabs of compacted powder are usually also subjected to a second pressing step, usually by means of a conventional discontinuous die, so as to be able to reach higher and more suitable values of the compacting pressure, usually comprised between 250 Kg/cm 2 and 500 Kg/cm 2 .
  • the layer of compacted powder tends to expand spontaneously. Due to this spontaneous expansion, whose extent is generally proportional to the compacting pressure, the layer of powder may break and form cracks and/or fissures that make it entirely unusable, or however seriously faulty.
  • the compacting station is usually also provided with means for contrasting the expansion of the layer of compacted powder. These contrast means have the function of "accompanying" the expansion, i.e. slowing it, so as to prevent the formation of cracks and/or fissures in the layer of compacted powder.
  • the means for contrasting the expansion may comprise a pair of superimposed plates, between which the compacting surfaces are guided to pass downstream of the pressing means. These plates have the function of maintaining the upper compacting surface pressed towards the lower compacting surface, so that the layer of compacted powder is subjected to a pressure for contrasting the expansion, lower than the compacting pressure exerted by the pressing means.
  • the upper plate of the pair can be slightly inclined, so that the contrast pressure generated thereby progressively decreases as the forward advancement of the layer of powder moves away from pressing means.
  • a variant of this solution provides for replacing the upper plate with a flexible plate, which is supported by a row of jacks arranged adjacent to each other in transverse direction with respect to the direction of advancement of the conveyor belt.
  • each jack comprises a cylinder, obtained in a fixed support body, within which there slides a piston fixed to the flexible plate.
  • a pressurised fluid typically oil
  • the pistons maintain the flexible plate pressed towards the upper compacting surface.
  • the fluid is supplied in the cylinder through a single manifold, so that each piston is always subjected to the same pressure.
  • the flexible plate substantially acts as an isostatic buffer, which exerts a constant and uniform pressure on the underlying upper compacting surface.
  • This document discloses a double band press for the continuous production of chip comprising two metal press bands revolving in a vertical plane each supported by a rigid press plate and moving one on top of the other, at least one of said press plates being subjected to the action of at least one set of pressing means adjacent to one another in a row transversal to the movement of the bands, several parallel rows being provided under the press plate in the direction of movement, the pressing means of each row being independent one another.
  • Said press comprises a device to subject at least one of said press plates to a selectable moment of flexion in the transverse plane of the plate orthogonal to the running direction of the bands.
  • Such an apparatus has not proved to be suitable for contrasting the expansion of the layer of compacted powder while subjecting the powder to a differentiated pressure in the transverse direction with respect to the direction of advancement.
  • An object of the present invention is to overcome, or at least efficiently reduce, this drawback of the prior art, through a simple, rational and inexpensive solution.
  • the invention provides a device for compacting a layer of powder material, with the features of claim 1.
  • the pressure exerted by the contrast means can be advantageously regulated at the edges of the compacting surface differently from that exerted at the centre, with the aim of efficiently contrasting the expansion of the layer of powder material also along the sides.
  • the pressure exerted by the contrast means can be advantageously regulated so as to ensure that the contrast pressure actually transmitted to the layer of powder material is substantially constant along the entire width of the layer.
  • said transport surface and said compacting surface are singularly defined by a respective slidable belt.
  • said contrast means comprise at least one row of pistons, superimposed to the compacting surface and arranged adjacent to each other in transverse direction with respect to the direction of advancement, each of which is slidably received in a respective reception cavity, which is obtained in a support body and it is in communication with a supply system of a pressurised fluid for pushing the piston towards the underlying compacting surface, said supply system being configured for regulating the pressure of the fluid in the reception cavity of each piston of the row independently with respect to the pressure of the fluid in the reception cavity of the other pistons of the row.
  • the thrust exerted by each piston on the underlying compacting surface can be advantageously regulated independently from that of the other pistons of the row.
  • such pressures can be regulated so as to exert a lower thrust at the centre of the compacting surface and a greater thrust at the lateral edges.
  • the thrusts exerted by the pistons can be selected so that, regardless of the presence of the lateral containment edges, the compacting surface is actually capable of transmitting to the powder material the same contrast pressure of the expansion along the entire width of the layer.
  • an aspect of the invention provides for that said row of pistons comprises at least three pistons.
  • each piston of the row is substantially configured like a plate, which is received in the respective reception cavity so as to be adapted to slide in the direction of the thickness thereof.
  • This particular configuration of the pistons has the advantage lying in the fact that the pressure exerted by each of them is globally more uniform and substantially isostatic.
  • the pistons positioned at the ends of the row are singularly superimposed, at least partly, at a respective edge for laterally containing the layer of powder material.
  • the aforementioned end pistons may operate more efficiently at the edges of the layer of powder material.
  • a further aspect of the invention provides for that the means for contrasting the expansion also comprise a flexible plate, which is fixed to the pistons of the row so as to be interposed between the latter and the compacting surface.
  • an aspect of the invention provides for that it comprises a plurality of pumps, each of which is adapted to pump the fluid into the reception cavity of a respective piston of the row.
  • This aspect of the invention outlines a very simple solution for allowing regulating the pressure of the fluid in the different reception cavities independently.
  • the supply system of the pressurised fluid may also comprise a plurality of pressure regulation valves, each of which is positioned along a connection conduit between a respective pump and the reception cavity of the corresponding piston.
  • a further aspect of the invention provides for that the supply system of the pressurised fluid also comprises a plurality of pressure sensors, each of which is in communication with the reception cavity of a respective piston of the row.
  • operators and/or the system for controlling the supply system may constantly control the level of pressure applied to each piston.
  • the means for contrasting the expansion may comprise a plurality of rows of pistons like the one described above, arranged in succession along the direction of advancement of the transport surface.
  • the contrast means substantially comprise a grid or matrix of pistons, distributed both in the direction of advancement of the transport surface and in the transverse direction, increasing and considerably improving the contrallability of the expansion of the layer of powder material.
  • the invention provides a method for compacting a layer of powder with the features of claim 10.
  • This embodiment of the invention substantially attains the same advantages of the device described beforehand, i.e. contrasting the expansion of the layer of powder material also along the sides more efficiently.
  • said differentiated pressure is regulated so as to exert on the layer of powder material a constant pressure in the transverse direction with respect to the direction of advancement.
  • a layer of compacted powder of uniform quality can be obtained advantageously.
  • the mentioned figures show a device 100 for compacting a layer M of powder material, typically of ceramic powder within a method for forming ceramic tiles or slabs.
  • the device 100 comprises a flexible conveyor belt 105, which is closed-loop-like wound around a plurality of rollers 110 with horizontal axis, including a series of idle return rollers and at least one motorised drive roller adapted to actuate the conveyor belt 105 to slide.
  • the conveyor belt 105 can be made of plastic material, so as to have a low cost, a low extent of dirtiness and an easy operating maintenance.
  • the upper section of the conveyor belt 105 substantially horizontal, defines a slidable transport surface 106 adapted to support the layer M of powder material and advance it in a predefined direction of advancement A.
  • the layer M of powder material is advanced from said transport surface 106 through a compacting station 115 of the continuous type, which is adapted to compact the layer M of powder material progressively as it advances.
  • the compacting station 115 comprises two flexible compacting belts, mutually superimposed, including a lower compacting belt 120 and an upper compacting belt 125. Both the compacting belts 120 and 125 may be made of plastic material, so as to have a low cost, a low extent of dirtiness and an easy operating maintenance.
  • the lower compacting belt 120 is closed-loop-like wound around a pair of rollers 121 with horizontal axis, including an idle return roller and a motorised drive roller adapted to actuate the compacting belt 120 to slide.
  • the upper section of the compacting belt 120 substantially horizontal, defines a slidable compacting surface 122 which is arranged beneath and at direct contact with the transport surface 106, so that it supportingly rests thereon.
  • the compacting surface 122 is further actuated to slide in the same direction of advancement A and substantially at the same speed as the transport surface 106, so as to prevent mutual friction.
  • the upper compacting belt 125 is in turn closed-loop-like wound around a pair of rollers 126 with horizontal axis, including an idle return roller and a motorised drive roller adapted to actuate the compacting belt 125 to slide.
  • the lower section of the compacting belt 125 defines a slidable compacting surface 127 which is arranged above the transport surface 106, and it is spaced therefrom so as to leave defined an interspace for the passage of the layer M of powder material.
  • the compacting surface 127 is actuated to slide substantially in the same direction of advancement A and substantially at the same speed as the transport surface 106, so as to prevent mutual friction with the layer M of powder material.
  • the compacting station 115 further comprises special pressing means, which are adapted to locally maintain the upper compacting surface pressed 127 towards the transport surface 106, so as to compress the layer M of powder material interposed therebetween.
  • the pressing means comprise a pair of mutually superimposed pressing rollers, including a lower pressing roller 130 and an upper pressing roller 135, having rotation axes horizontal and orthogonal with respect to the direction of advancement A.
  • the lower pressing roller 130 is arranged beneath and at direct contact with the lower compacting surface 122, and it is positioned at a height such to maintain the planarity of the transport surface 106.
  • the upper pressing roller 135 is instead arranged above and at direct contact with the upper compacting surface 127, and it is positioned at a height such to locally approach said upper compacting surface 127 towards the transport surface 106, so as to reduce the thickness of the interspace defined therebetween and thus compact the layer M of powder material. While the lower pressing roller 130 is mounted fixed, the upper pressing roller 135 is carried by jacks 136 that allow modifying the height thereof, i.e. the distance with respect to the lower pressing roller 130, for example as a function of the thickness of the layer M of powder material to be compacted and/or the compacting pressure intended to be applied thereon.
  • the pressing means may also comprise a pair of mutually superimposed roller units, including a lower roller unit 140 and an upper roller unit 145, which are positioned upstream of the pressing rollers 130 and 135 with respect to the direction of advancement A.
  • Both roller units 140 and 145 comprise rollers having rotation axes horizontal and orthogonal to the direction of advancement A.
  • the rollers of the lower roller unit 140 are arranged beneath and at contact with the lower compacting surface 122, they are arranged on a plane parallel to the direction of advancement A, and they are positioned at a height such to maintain the planarity of the transport surface 106.
  • the rollers of the upper roller unit 145 are instead arranged above and at contact with the upper compacting surface 127, they are arranged on an up-down inclined plane with respect to the direction of advancement A, and they are positioned at a height such to progressively approach the upper compacting surface 127 towards the transport surface 106, so as to progressively reduce the thickness of the interspace defined therebetween and thus gradually compacting the layer M of powder material.
  • the compacting station 115 also comprises means for laterally containing the layer M of powder material.
  • said containment means comprise a pair of slidable belts, respectively 150 and 155, which are both positioned above the conveyor belt 105.
  • Each slidable belt 150 and 155 is flexible and it is closed-loop-like wound around a respective plurality of rollers 160 with horizontal axis, including a series of idle return rollers and possibly a motorised drive roller which allows the belt to slide.
  • the slidable belts 150 and 155 are configured and actuated so that the lower section of each of them, substantially horizontal, is adapted to slide in the same direction of advancement A and substantially at the same speed as the transport surface 106.
  • said lower sections of the slidable belts 150 and 155 are both positioned resting on the transport surface 106, in an interposed position between the latter and the upper compacting surface 127, thus defining two parallel and mutually spaced edges 151 and 156 which are adapted to laterally contain the layer M of powder material during compacting.
  • the slidable belts 150 and 155 are made of a quite yieldable material in the direction of the thickness, for example made of rubber or any other plastic material, so that the containment edges 151 and 156 defined thereby may be elastically compressed between the compacting surfaces 122 and 127.
  • the compacting station 115 is also provided with means for contrasting the expansion to which the layer M of powder materials is spontaneously subjected to after the compacting step. More in particular, these contrast means have the function of "accompanying" the expansion of the powder material, i.e. limiting the extent thereof and/or slowing it, so as to prevent the formation of cracks and/or fissures in the layer M after compacting.
  • the means for contrasting the expansion comprise a lower plate 165, which is positioned beneath and at direct contact with the lower compacting surface 122.
  • the lower plate 165 is substantially horizontal and it is positioned at a height such to maintain the planarity of the transport surface 106.
  • the contrast means further comprise an upper plate 170, which is superimposed to the lower plate 165 and it is positioned above the upper compacting surface 127. While the lower plate 165 is fixed, the upper plate 170 is supported by means of jacks 175 of the hydraulic type which allow varying the distance thereof with respect to the transport surface 106, for example as a function of the thickness of the layer M of powder material.
  • the upper plate 170 may oscillate with respect to the jacks 175 so as to be able to be inclined with respect to the transport surface 106.
  • the upper plate 170 carries a row of at least three pistons 180, arranged in the transverse direction with respect to the direction of advancement A of the transport surface 106.
  • Each piston 180 of the row is configured like a thin plate, substantially horizontal, in this case - in plan view - square-shaped (v. fig 3 ).
  • the central piston 180 has a greater width with respect to the pistons 180 arranged at the ends of the row, which are preferably identical to each other.
  • the end pistons 180 are singularly dimensioned and positioned so as to surmount a respective containment edge 151 and 156, while the central piston 180 is dimensioned and positioned so as to surmount the layer M of powder material alone.
  • the row of pistons 180 in turn carries a flexible plate 185, substantially horizontal, which is adapted to be at direct contact above the upper compacting surface 127.
  • the flexible plate 185 is preferably positioned and dimensioned so as to surmount both the layer M of powder material and the lateral containment edges 151 and 156.
  • the flexible plate 185 can be made of plastic material and be fixed to the lower faces of the pistons 180 by means of usual fastening means not illustrated.
  • each piston 180 of the row is received in a respective cavity 190 of the upper plate 170, in which it is free to slide in the direction of the thickness thereof, i.e. in substantially vertical direction.
  • the reception cavities 190 are in communication with a system 200 adapted to supply a pressurised fluid, typically oil, therein so that the pressure of the fluid in the reception cavities 190 pushes the relative pistons 180, and thus the underlying flexible plate 185, downwards.
  • the flexible plate 185 maintains the upper compacting surface pressed 127 towards the upper section of the conveyor belt 105, subjecting the layer M of powder material to a pressure for contrasting the expansion.
  • this contrast pressure will be lower than the compacting pressure exerted by the pressing rollers 130 and 135, so that the powder material can still expand, but without causing the formation of cracks or fissures in the compacted layer M.
  • the supply system 200 comprises means that allow regulating the pressure of the fluid in each reception cavity 190 independently from the others.
  • said means comprise three independent operating units 205, each of which is adapted to draw the fluid from a tank 210 and supply it pressurised into a respective reception cavity 190.
  • Each operating unit 205 particularly comprises a pump 215, which is in communication with the tank 210 through an intake conduit 220 and with the respective reception cavity 190 through a delivery conduit 225, a pressure regulation valve 230 located along the delivery conduit 225, and a pressure sensor 235 located on the same delivery conduit 225 downstream of the pressure regulation valve 230.
  • Each operating unit 205 is further connected with an electronic control unit 240, which is programmed for controlling the operation of the pumps 215 and/or of the pressure regulation valves 230, so as to ensure that the pressure of the fluid in each reception cavity 190 has a predefined value, regardless of the others.
  • the electronic control unit 240 is programmed so that the pistons 180 are adapted to press the upper compacting surface 127, through the flexible plate 185, with a differentiated pressure in the transverse direction with respect to the direction of advancement A.
  • the pistons 180 arranged at the end of the row may be controlled to exert on the upper compacting surface 127 a different thrust (upper) with respect to that exerted by the central piston 180 so that, regardless of the contrast action offered by the underlying lateral containment edges 151 and 156, the powder material arranged at the sides of the layer M is subjected to the same contrast pressure the powder material arranged at the centre is subjected to.
  • a different thrust upper
  • FIG. 4 illustrates a variant of the invention in which the upper plate 170 carries a plurality of rows of pistons 180, which are arranged in succession along the direction of advancement A of the transport surface 106, forming a kind of matrix or grid of pistons 180.
  • Each row of pistons 180 of the matrix/grid is entirely analogous to that described previously, and it is associated to an analogous supply system 200 of the fluid.
  • a respective flexible plate 185 can be fixed to each row of pistons 180 of the matrix/grid, or a single flexible plate 185 of greater dimensions can be fixed to all the pistons 180 of the matrix/grid. Due to this solution, each row of pistons 180 of the matrix/grid can be controlled for subjecting the layer M of powder material to a different contrast pressure, for example progressively decreasing in the direction of advancement A, so as to allow the powders to expand more gradually and slowly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Press Drives And Press Lines (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Coating Apparatus (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Materials For Medical Uses (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Producing Shaped Articles From Materials (AREA)

Claims (11)

  1. Dispositif (100) pour compacter une couche (M) de matériau en poudre, comprenant une surface de transport coulissante (106) adaptée pour supporter et avancer la couche (M) de matériau en poudre dans une direction d'avancement (A) prédéfinie, une surface de compactage coulissante (122) qui est agencée sous la surface de transport (106) et directement en contact avec celle-ci, une surface de compactage coulissante (127) flexible et superposée à la surface de transport (106), et coulissant substantiellement dans la même direction d'avancement (A), des moyens de compression (130, 135) adaptés pour compresser ladite surface de compactage (127) vers la surface de transport (106) de manière à compresser la couche (M) de matériau en poudre interposée entre elles, des moyens de contention latérale (150) de la couche de poudre (M), et des moyens d'opposition (170, 180, 185) qui s'opposent à l'expansion de la couche (M) de matériau en poudre en aval des moyens de compression (130, 135), dans lequel lesdits moyens d'opposition (170, 180, 185) sont indépendants desdits moyens de compression et comprennent une plaque inférieure fixe (165), qui est positionnée sous la surface de compactage inférieure (122) et en contact direct avec celle-ci, et une plaque supérieure (170), qui est superposée à la plaque inférieure (165) et qui est positionnée au-dessus de la surface de compactage supérieure (127), la plaque supérieure étant supportée à l'aide de vérins (175) de type hydraulique et comprenant au moins une rangée de pistons (180), superposés à la surface de compactage (127) et agencés de manière adjacente entre eux en direction transversale par rapport à la direction d'avancement (A), chacun étant reçu de manière coulissante dans une cavité de réception respective (190), qui est obtenue dans un corps de support (170) et est en communication avec un système (200) pour alimenter un fluide sous pression afin de pousser le piston (180) vers la surface de compactage (127) sous-jacente, caractérisé en ce que ledit système d'alimentation (200) est configuré pour réguler la pression du fluide dans la cavité de réception (190) de chaque piston (180) de la rangée indépendamment de la pression du fluide dans la cavité de réception (190) des autres pistons (180) de la rangée.
  2. Dispositif selon la revendication 1, caractérisé en ce que ladite surface de transport (106) et ladite surface de compactage (127) sont définies de manière unique par une bande coulissante respective (105, 125).
  3. Dispositif (100) selon la revendication 1, caractérisé en ce que ladite rangée de pistons (180) comprend au moins trois pistons (180).
  4. Dispositif (100) selon la revendication 3, caractérisé en ce que chaque piston (180) de la rangée est substantiellement configuré comme une plaque, qui est reçue dans la cavité respective (190) de manière à être adaptée pour coulisser en direction de son épaisseur.
  5. Dispositif (100) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les pistons (180) positionnés aux extrémités de la rangée sont superposés de manière unique à un bord respectif (151, 156) pour contenir latéralement la couche (M) de matériau en poudre.
  6. Dispositif (100) selon la revendication 1, caractérisé en ce que ledit système (200) d'alimentation du fluide sous pression comprend une pluralité de pompes (215), qui sont adaptées chacune pour pomper le fluide dans la cavité de réception (190) d'un piston respectif (180) de la rangée.
  7. Dispositif (100) selon la revendication 6, caractérisé en ce que ledit système (200) d'alimentation du fluide sous pression comprend en outre une pluralité de vannes de régulation de pression (230), qui sont positionnées chacune sur un conduit de connexion (225) entre la cavité de réception (190) d'un piston respectif (180) de la rangée et la pompe correspondante (215).
  8. Dispositif (100) selon la revendication 7, caractérisé en ce que ledit système d'alimentation (200) comprend en outre une pluralité de capteurs de pression (235), qui sont chacun en communication avec la cavité de réception (190) d'un piston respectif (180) de la rangée.
  9. Dispositif (100) selon les revendications précédentes, caractérisé en ce que lesdits moyens d'opposition comprennent une pluralité de dites rangées de pistons (180), qui sont agencées en succession en direction d'avancement (A) de la surface de transport (106).
  10. Procédé de compactage d'une couche (M) de matériau en poudre utilisant le dispositif selon les revendications précédentes, comprenant les étapes suivantes :
    - avancement de la couche (M) de matériau en poudre selon une direction d'avancement prédéfinie (A) à l'aide d'une surface de transport coulissante (106),
    - contention latérale de la couche (M) pendant qu'elle avance sur les surfaces de support coulissantes (106),
    - compactage de ladite couche (M) de matériau en poudre pendant qu'elle avance à l'aide d'une surface de compactage coulissante (127) flexible et superposée à la surface de transport (106), et coulissant substantiellement dans la même direction d'avancement (A), et à l'aide de moyens de compression (130, 135) adaptés pour compresser ladite surface de compactage (127) vers la surface de transport (106),
    - opposition à l'expansion de la couche (M) de matériau en poudre pendant qu'elle avance en aval des moyens de compression (130, 135),
    dans lequel ladite étape d'opposition comprend la compression de la surface de compactage (127) et des moyens de contention latérale de la couche (M) vers la surface de transport (106) avec une pression différenciée en direction transversale par rapport à la direction d'avancement (A).
  11. Procédé selon la revendication 11, caractérisé en ce que ladite pression différenciée est réglée de manière à exercer sur la couche (M) de matériau en poudre une pression constante en direction transversale à la direction d'avancement (A).
EP12772426.8A 2011-10-07 2012-10-02 Dispositif et procédé permettant de compacter un matériau en poudre Active EP2763845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000079A ITRE20110079A1 (it) 2011-10-07 2011-10-07 Dispositivo per la compattazione di materiale in polvere
PCT/IB2012/001977 WO2013050865A1 (fr) 2011-10-07 2012-10-02 Dispositif et procédé permettant de compacter un matériau en poudre

Publications (2)

Publication Number Publication Date
EP2763845A1 EP2763845A1 (fr) 2014-08-13
EP2763845B1 true EP2763845B1 (fr) 2017-03-22

Family

ID=45370649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12772426.8A Active EP2763845B1 (fr) 2011-10-07 2012-10-02 Dispositif et procédé permettant de compacter un matériau en poudre

Country Status (10)

Country Link
EP (1) EP2763845B1 (fr)
CN (1) CN103958172B (fr)
BR (1) BR112014008113B1 (fr)
ES (1) ES2625611T3 (fr)
IT (1) ITRE20110079A1 (fr)
MX (1) MX349328B (fr)
PL (1) PL2763845T3 (fr)
PT (1) PT2763845T (fr)
RU (1) RU2606142C2 (fr)
WO (1) WO2013050865A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018051257A1 (fr) 2016-09-16 2018-03-22 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Procédé et appareil de formation de produits en poudre compactée

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20160504A1 (it) * 2016-01-15 2017-07-15 System Spa Compensatore di formato per un dispositivo di pressatura
CN105922617B (zh) * 2016-04-28 2017-11-14 中国农业大学 高水分牧草、秸秆脱水装置
ITUA20164307A1 (it) * 2016-06-13 2017-12-13 Sacmi Macchina e metodo per la compattazione di polvere ceramica
IT201600091618A1 (it) * 2016-09-12 2018-03-12 Sacmi Dispositivo per la compattazione di materiale in polvere, in particolare materiale ceramico
IT201600105117A1 (it) * 2016-10-19 2018-04-19 Sacmi Macchina per la compattazione di materiale in polvere
IT201800006678A1 (it) * 2018-06-26 2019-12-26 Metodo ed impianto per la realizzazione di prodotti ceramici
EP3846988B1 (fr) * 2018-09-07 2023-07-19 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Machine et procédé pour le compactage d'un matériau en poudre
MX2021003218A (es) * 2018-09-21 2021-05-12 Sacmi Maquina y metodo para compactar un material en polvo.
CN109291218A (zh) * 2018-10-15 2019-02-01 广东科达洁能股份有限公司 一种全自动升降式辊压机
CN109262808B (zh) * 2018-11-02 2024-01-09 佛山市三水区广顺自动化设备有限公司 一种辊式液压预压机及布料生产线
IT202000023845A1 (it) * 2020-10-09 2022-04-09 Technoplants S R L Forno-pressa di materiale inconsistente
CN113634312A (zh) * 2021-08-18 2021-11-12 科达制造股份有限公司 一种陶瓷辊压设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2355797C3 (de) * 1973-11-08 1981-04-16 Küsters, Eduard, 4150 Krefeld Presse zur Ausübung einer Flächenpressung
US3991149A (en) * 1974-10-03 1976-11-09 Steven Hurwitt Method for controlling the thickness of ceramic tape
SU575229A1 (ru) * 1976-06-17 1977-10-05 Всесоюзный Научно-Исследовательский Институт Деревообрабатывающей Промышленности Вниидрев Ленточный пресс дл прессовани древесных плит
SU869969A1 (ru) * 1979-12-10 1981-10-07 Предприятие П/Я А-7697 Устройство дл непрерывного прессовани металлического порошка
AU592279B2 (en) * 1987-05-22 1990-01-04 Intelhearts Co. Ltd. Method of producing a porous ceramic panel
GB2277707B (en) * 1993-04-29 1996-07-03 Redland Technology Ltd Improvements in a roof tile making machine
DE4405343A1 (de) * 1994-02-19 1995-08-24 Dieffenbacher Gmbh Maschf Preß-/Heizplatte für kontinuierlich arbeitende Pressen
IT1269274B (it) * 1994-11-22 1997-03-26 Carlo Antonio Camorani Metodo per la formatura di piastrelle ceramiche ed impianto relativo
DE19710723C1 (de) * 1997-03-14 1998-10-08 Kvaerner Panel Sys Gmbh Doppelbandpresse
DE10114379B4 (de) * 2001-03-23 2004-02-12 Metso Paper Inc. Doppelbandpresse
ITRE20030004A1 (it) * 2003-01-20 2004-07-21 Sacmi Metodo ed impianto per la formatura di lastre o piastrelle ceramiche.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018051257A1 (fr) 2016-09-16 2018-03-22 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Procédé et appareil de formation de produits en poudre compactée
US11345060B2 (en) 2016-09-16 2022-05-31 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Method and apparatus for forming compacted powder products

Also Published As

Publication number Publication date
BR112014008113A2 (pt) 2017-04-11
PT2763845T (pt) 2017-05-24
BR112014008113B1 (pt) 2021-11-30
MX2014004094A (es) 2014-10-17
EP2763845A1 (fr) 2014-08-13
ES2625611T3 (es) 2017-07-20
CN103958172A (zh) 2014-07-30
RU2606142C2 (ru) 2017-01-10
MX349328B (es) 2017-07-24
ITRE20110079A1 (it) 2013-04-08
CN103958172B (zh) 2016-07-06
RU2014112559A (ru) 2015-11-20
WO2013050865A1 (fr) 2013-04-11
PL2763845T3 (pl) 2017-09-29

Similar Documents

Publication Publication Date Title
EP2763845B1 (fr) Dispositif et procédé permettant de compacter un matériau en poudre
CN114800782A (zh) 用于压实陶瓷粉末的机器和方法
EP3057746B1 (fr) Appareil pour former des feuilles céramiques
EP2763827B1 (fr) Dispositif et procédé pour traiter une couche de matériau en poudre
CN106738023A (zh) 一种强力皮带切割机
EP1641607B1 (fr) Procede et installation permettant de fabriquer des dalles ou des carreaux en ceramique d'epaisseur commandee
MXPA03003502A (es) Metodo y planta para formar losetas o tejas ceramica.
CN210161370U (zh) 一种大规模陶瓷薄板的生产设备
EP1585620B1 (fr) Procede et installation de formage de dalles et de tuiles en ceramique
CN206690213U (zh) 一种用于窄边框模切的圆刀结构及模切装置
CN205309984U (zh) 一种建筑板材表面抛光机
US20210347088A1 (en) Machine and method for compacting powder material
CN106584662B (zh) 一种耐用型断条机
CN216505794U (zh) 一种压制设备
EP3509833B1 (fr) Dispositif destiné à compacter un matériau pulvérulent, en particulier un matériau céramique
US11938652B2 (en) Plant and method for the production of slabs made of composite stone material from a mix
CN110900791A (zh) 用于压实粉末材料的机器和方法
CN107755778A (zh) 一种高稳定性钢板加工装置
DK200400403A (da) A method for controlling a rotary tablet press and such a press

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140507

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20150618

RIC1 Information provided on ipc code assigned before grant

Ipc: B28B 3/12 20060101ALI20160830BHEP

Ipc: B30B 5/06 20060101AFI20160830BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20161014

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 877298

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170415

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012030179

Country of ref document: DE

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 2763845

Country of ref document: PT

Date of ref document: 20170524

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20170510

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2625611

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20170720

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170623

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170622

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 877298

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170622

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170722

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012030179

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

26N No opposition filed

Effective date: 20180102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602012030179

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20171002

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180501

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171002

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171002

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20171031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20121002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170322

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20220922

Year of fee payment: 11

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230427

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230925

Year of fee payment: 12

Ref country code: IT

Payment date: 20230920

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20230927

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20231102

Year of fee payment: 12