EP2763827B1 - Dispositif et procédé pour traiter une couche de matériau en poudre - Google Patents

Dispositif et procédé pour traiter une couche de matériau en poudre Download PDF

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Publication number
EP2763827B1
EP2763827B1 EP12769714.2A EP12769714A EP2763827B1 EP 2763827 B1 EP2763827 B1 EP 2763827B1 EP 12769714 A EP12769714 A EP 12769714A EP 2763827 B1 EP2763827 B1 EP 2763827B1
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EP
European Patent Office
Prior art keywords
powder material
layer
transport surface
compacting
trimming
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
EP12769714.2A
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German (de)
English (en)
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EP2763827A1 (fr
Inventor
Marco Salieri
Silvano Valli
Alan Babini
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
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Sacmi Imola SC
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Publication date
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Priority to PL12769714T priority Critical patent/PL2763827T3/pl
Publication of EP2763827A1 publication Critical patent/EP2763827A1/fr
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Publication of EP2763827B1 publication Critical patent/EP2763827B1/fr
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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
    • 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
    • B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface
    • 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
    • B28B5/026—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 the shaped articles being of indefinite length
    • B28B5/027—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 the shaped articles being of indefinite length the moulding surfaces being of the indefinite length type, e.g. belts, and being continuously fed
    • 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 and a method for processing a layer of powder material, mainly within a method for 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 and slidable substantially in the same direction and at the same speed as the transport surface, 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.
  • the transport surface 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.
  • a device and method for forming ceramic tiles according to the preamble of claims 1 and 9 is disclosed in document EP 1 669 177 .
  • a need regarding these forming devices lies in the fact that the forward advancement of the layer of powder upstream of the compacting station has an almost constant thickness in the direction of the width, so as to ensure that the forward advancement of the compacted layer in the outlet has the most uniform possible apparent density.
  • the powder deposited on the transport surface upstream of the compacting station usually tends to be arranged so as to form a layer with trapezoid-shaped transverse section, which thus does not have a sufficiently constant thickness in the direction of the width and may lead to a faulty compacted layer, at least along the edges.
  • These containment means comprise generally a pair of parallel edges which are mounted in fixed position above the transport surface.
  • the powder is supplied on the transport surface in the space comprised between these two lateral containment edges, which support the powder along the entire path towards the compacting station, conferring to the layer of powder a substantially rectangular-shaped section.
  • a mutual sliding friction which however requires a considerable reduction of the thickness of the layer of powder at the edges, still determining a non-uniform density of the compacted layer exiting from the compacting station as well as a local deformation of possible graphic effects made on the layer of powder.
  • 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 processing a layer of powder material, comprising a slidable transport surface adapted to support and advance the layer of powder material, a compacting station adapted to compact the layer of powder material while it advances on the transport surface, and means for trimming the lateral edges of the layer of powder material upstream of the compacting station.
  • said trimming means are generally adapted to separate and thus remove two small lateral strips of powder material from the layer which advances on the transport surface upstream of the compacting station, so as to reduce the width thereof.
  • the fixed edges for laterally containing the layer of powder are no longer required.
  • said layer of powder material can be initially made having a greater width respect to what is required at the inlet of the compacting station, so that the trimming means may subsequently remove the inclined lateral edges of this layer of powder material, reducing the width thereof to the required value and conferring to the transverse section of the layer of powder material a square shape with an almost constant thickness.
  • the layer of powder material is no longer subjected to sliding during the advancement towards the compacting station, thus preventing the adverse effects due to friction.
  • the layer of powder material at the inlet of the compacting station may substantially have the same thickness both at the centre and at the edges, thus making the apparent density of the compacted layer at the outlet more uniform and maintaining possible graphic patterns made on the layer of powder material.
  • the aforementioned trimming means may comprise a pair of blades arranged in fixed position above the transport surface.
  • This aspect of the invention has the advantage of providing a particularly simple solution for trimming the lateral edges of the layer of powder material.
  • Each of said blades can be defined by a thin sheet oriented orthogonally with respect to the transport surface.
  • the use of a thin sheet has the advantage of allowing an extremely clear trimming of the layer of powder material, eliminating or however considerably reducing possible adverse effects that could be caused by the mechanical action of the blade on the powder material.
  • the device may also comprise means for regulating the mutual distance between the aforementioned blades.
  • the device may also comprise means for regulating the mutual distance between the aforementioned blades.
  • the device may also comprise means for moving away from the transport surface the powder material separated by the trimming means.
  • This aspect of the invention has the advantage of allow the recovery of the removed powder material, which may thus be advantageously reutilized for forming a new layer of powder material at the beginning of the process.
  • said means for moving away may comprise suction means for suction the powder material separated by the trimming means.
  • Each suction means may comprise a hood positioned above the transport surface, which is provided with an inlet for the powder material which advances on the transport surface and an outlet connected with means for creating vacuum adapted to suction the powder material through the outlet same.
  • the invention provides a method for compacting a layer of powder material, comprising the steps of:
  • This method substantially attains the same advantage of the device outlined previously, i.e. that of allowing the layer of powder material at the inlet of the compacting station to substantially have the same thickness both at the centre and at the edges, thus making the apparent density in the compacted layer at the outlet uniform and maintaining possible graphic patterns made on the layer of powder material.
  • the method may comprise the further step of moving away from the transport surface the powder material separated from the layer following the trimming step, so as to be able to advantageously recover and reutilize it in the process.
  • the mentioned figures show a device 100 for processing 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 (schematically indicated with a square in figure 1 but detailed in figure 2 ), 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 particularly these contrast means have the function of "accompanying" the expansion of the powder material, i.e. 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 has the function of maintaining 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 device 100 immediately upstream of the compacting station 115, the device 100 comprises means for trimming the edges of the layer M of powder material which advances on the transport surface 106. More precisely, these trimming means are generally adapted to separate and remove two small lateral strips S of powder material from the edges of the layer M which advances on the transport surface 106, so as to reduce the width thereof and confer them a configuration with substantially square-shaped transverse section.
  • the trimming means comprise a pair of blades, each of which is defined by a sheet 200 oriented orthogonally to the transport surface 106 and parallel to the direction of advancement A. Said sheets 200 are mounted in fixed position above the transport surface 106, so as to remain immobile with respect to the layer M of powder material which advances, cutting the lateral strips S.
  • the sheets 200 may be made using any material but more preferably made of metal, for example made of steel.
  • the sheets 200 are generally quite thin, for example they may have a thickness between 0.1 mm and 2 mm.
  • the sheets 200 also have a quite small dimension in the direction of advancement A, preferably lower a 300 mm, so as to reduce the frictions that are created between them and the lateral edges of the layer M of powder material that slides towards the compacting station 115 to the maximum.
  • the sheets 200 may be coated, at least on the inner face thereof, made of anti-adhesion material, for example of teflon.
  • each sheet 200 is fixed to a support body 205, which is in turn fixed to a fixed framework (not shown) of the device 100, by means of a respective connection bracket 210.
  • the support body 205 is fixed to the outer face of the respective sheet 200, so as to be substantially aligned with the lateral strip S of powder material which is cut by said sheet 200.
  • the connection bracket 210 carries the support body 205 and the respective sheet 200 above the transport surface 106, almost at contact with the latter, so as to avoid sliding but allow the sheet 200 to cut the layer M of powder material substantially over the entire thickness thereof.
  • each sheet 200 is substantially aligned with a respective containment edge 151 and 156 of the subsequent compacting station 115.
  • the sheets 200 are adapted to reduce the width of the layer M of powder material so that the latter can be received substantially fittingly between the said containment edges 151 and 156.
  • there may be associated means (not illustrated) adapted to adjust the mutual distance thereof.
  • Said means may comprise devices adapted to allow a movement of the connection brackets 210 with respect to the fixed framework of the device 100, such as for example of the jacks or linear actuators.
  • the distance between the end downstream of said sheets 200 and the end upstream of the containment edges 151 and 156 should be preferably null or however extremely small, so as to prevent lateral losses of powder material.
  • the device 100 further comprises means adapted to move the powder material of the lateral strips S cut by the sheets 200 away from the transport surface 106.
  • said means for moving away comprise a system for the suction of the powder material which, due to each sheet 200, comprises the relative support body 205.
  • the support body 205 is actually configured as a hood, i.e. it has an inner cavity facing downwards and closed at the lower part by the transport surface 106.
  • the support body 205 is further provided with a lateral inlet 215 which faces the opposite direction with respect to the direction of advancement A, so as to allow the powder material of the lateral strip S to enter into the inner cavity.
  • the support body 205 is also provided with an outlet duct 220 communicating with the inner cavity.
  • Said outlet duct 220 is connected through a flexible pipe 225 with means, schematically represented in figure 1 and indicated with 226, which are adapted to create a vacuum, for example with using a powerful fan.
  • a vacuum generates an air current which sucks the powder material from the inner cavity of the support body 205, making it to pass through the outlet duct 220 and the flexible pipe 225.
  • the sucked material may be subsequently separated from the air current, for example through a cyclone device, and be received in a suitable container (not shown).
  • the use of the device 100 provides for depositing on the transport surface 106 a layer M of powder material initially having a width greater than the one required at the inlet of the compacting station 115, i.e. greater than the distance between the containment edges 151 and 156.
  • the powder material initially deposited on the transport surface 106 shall tend to be arranged freely, obtaining a layer M with trapezoidal-shaped transverse section, i.e. with the edges inclined as observable in figure 2 .
  • the layer M subsequently passes through the sheets 200, which provide for re-trimming it along the edges, removing the two lateral strips S of powder material.
  • the sheets 200 remove the inclined edges of the layer M of powder material, conferring it a configuration with substantially square-shaped section.
  • the sheets 200 reduce the width of the layer M of powder material, so as to make it coincide with the width provided at the inlet of the compacting station 115, i.e. substantially coinciding with the distance between the containment edges 151 and 156.
  • the layer M thus re-trimmed is thus advanced by the transport surface 106 through the compacting station 115, in which it is compacted in the usual manner, the powder material of the lateral strips S there is progressively advanced by the transport surface 106 into the cavity of the support bodies 205, from which it is continuously sucked and moved away.
  • the powder material thus sucked may be received subsequently and thus reutilised for the formation of a new layer M at the beginning of the process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
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  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
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  • Sheets, Magazines, And Separation Thereof (AREA)
  • Details Of Cutting Devices (AREA)

Claims (11)

  1. Dispositif (100) pour traiter 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, et une station de compactage (115) adaptée pour compacter la couche (M) de matériau en poudre alors qu'elle avance sur la surface de transport (106), caractérisé en ce qu'il comprend un moyen (200) pour ébavurer les bords latéraux de la couche (M) de matériau en poudre en amont de la station de compactage (115).
  2. Dispositif (100) selon la revendication 1, caractérisé en ce que ledit moyen d'ébavurage comprend une paire de lames (200) agencées dans une position fixe au-dessus de la surface de transport (106).
  3. Dispositif (100) selon la revendication 2, caractérisé en ce que chaque lame est définie par une feuille (200) orientée orthogonalement par rapport à la surface de transport (106).
  4. Dispositif (100) selon l'une quelconque des revendications 2 et 3, caractérisé en ce qu'il comprend un moyen pour réguler la distance mutuelle entre lesdites lames (200).
  5. Dispositif (100) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un moyen (205, 225, 226) pour éloigner de la surface de transport (106) le matériau en poudre séparé par le moyen d'ébavurage (200).
  6. Dispositif (100) selon la revendication 5, caractérisé en ce que ledit moyen d'éloignement comprend un moyen d'aspiration (205, 225, 226) pour aspirer le matériau en poudre séparé par le moyen d'ébavurage (200).
  7. Dispositif (100) selon la revendication 6, caractérisé en ce que chaque moyen d'aspiration comprend un capot (205) positionné au-dessus de la surface de transport (106), qui est pourvu d'une entrée (215) pour le matériau en poudre avançant sur la surface de transport (106) et d'une sortie (220) connectée à un moyen (226) pour créer un vide adapté pour aspirer le matériau en poudre à travers la sortie (220).
  8. Dispositif (100) selon la revendication 3, caractérisé en ce que la distance entre l'extrémité aval desdites feuilles (200) et l'extrémité amont de bords de retenue (151, 156) de la station de compactage (115) est nulle ou extrêmement faible de manière à éviter des pertes latérales de matériau en poudre.
  9. Procédé de compactage d'une couche (M) de matériau en poudre, comprenant les étapes suivantes :
    - avancement de la couche (M) de matériau en poudre sur une surface de transport coulissante (106),
    - compactage de ladite couche (M) de matériau en poudre pendant qu'elle avance sur ladite surface de transport (106),
    caractérisé en ce que ladite étape de compactage est précédée d'une étape d'ébavurage des bords latéraux de la couche (M) de matériau en poudre.
  10. Procédé selon la revendication 9, caractérisé en ce qu'il comprend une étape additionnelle d'éloignement du matériau en poudre, séparé de la couche suite à l'étape d'ébavurage, de la surface de transport (106).
  11. Procédé selon la revendication 10, caractérisé en ce que l'étape d'éloignement procure l'aspiration du matériau en poudre séparé de la couche (M) suite à l'étape d'ébavurage.
EP12769714.2A 2011-10-07 2012-09-12 Dispositif et procédé pour traiter une couche de matériau en poudre Active EP2763827B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12769714T PL2763827T3 (pl) 2011-10-07 2012-09-12 Urządzenie i sposób do przetwarzania warstwy materiału proszkowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000081A ITRE20110081A1 (it) 2011-10-07 2011-10-07 Dispositivo e metodo per il trattamento di uno strato di materiale in polvere
PCT/IB2012/001783 WO2013050845A1 (fr) 2011-10-07 2012-09-12 Dispositif et procédé pour traiter une couche de matériau en poudre

Publications (2)

Publication Number Publication Date
EP2763827A1 EP2763827A1 (fr) 2014-08-13
EP2763827B1 true EP2763827B1 (fr) 2015-11-25

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EP12769714.2A Active EP2763827B1 (fr) 2011-10-07 2012-09-12 Dispositif et procédé pour traiter une couche de matériau en poudre

Country Status (10)

Country Link
EP (1) EP2763827B1 (fr)
CN (1) CN103874564B (fr)
BR (1) BR112014008116B1 (fr)
ES (1) ES2554481T3 (fr)
IT (1) ITRE20110081A1 (fr)
MX (1) MX342802B (fr)
PL (1) PL2763827T3 (fr)
PT (1) PT2763827E (fr)
RU (1) RU2593406C2 (fr)
WO (1) WO2013050845A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11345060B2 (en) 2016-09-16 2022-05-31 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Method and apparatus for forming compacted powder products
EP4331798A2 (fr) 2016-06-13 2024-03-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Machine et procédé de compactage de poudre céramique

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ITRE20130061A1 (it) * 2013-08-09 2015-02-10 Sacmi Metodo e dispositivo per la riduzione degli sfridi laterali di polvere di uno strato di polvere che avanza su una superficie mobile di trasporto
MX2017003709A (es) 2014-09-22 2017-06-26 Sacmi Coop Mecc Imola Societa' Coop Linea para la produccion de productos individuales en sucesion en un ciclo continuo.
IT201700026199A1 (it) * 2017-03-09 2018-09-09 Sacmi Impianto e metodo per la realizzazione di articoli ceramici
MX2021003218A (es) * 2018-09-21 2021-05-12 Sacmi Maquina y metodo para compactar un material en polvo.

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IT1287505B1 (it) * 1996-11-22 1998-08-06 Algeri Maris Metodo e mezzi per la pressatura di piastrelle ceramiche.
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ITRE20040151A1 (it) * 2004-12-10 2005-03-10 Sacmi Impianto perfezionato per la formatura di lastre o piastrelle ceramiche
ITRE20040150A1 (it) * 2004-12-10 2005-03-10 Sacmi Impianto perfezionato per la formatura di lastre o piastrelle ceramiche
ITRE20050030A1 (it) * 2005-03-24 2006-09-25 Sacmi Lastra ceramica perfezionata per rivestimenti e metodo per la sua fabbricazione

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Publication number Priority date Publication date Assignee Title
EP4331798A2 (fr) 2016-06-13 2024-03-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Machine et procédé de compactage de poudre céramique
US11345060B2 (en) 2016-09-16 2022-05-31 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Method and apparatus for forming compacted powder products

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RU2593406C2 (ru) 2016-08-10
PL2763827T3 (pl) 2016-02-29
MX2014004038A (es) 2014-05-30
RU2014112556A (ru) 2015-11-20
ES2554481T3 (es) 2015-12-21
CN103874564B (zh) 2016-04-20
PT2763827E (pt) 2015-12-10
BR112014008116B1 (pt) 2020-11-17
WO2013050845A1 (fr) 2013-04-11
MX342802B (es) 2016-10-13
BR112014008116A2 (pt) 2017-04-11
EP2763827A1 (fr) 2014-08-13
CN103874564A (zh) 2014-06-18
ITRE20110081A1 (it) 2013-04-08

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