EP0980740B1 - Machine pour le traitement de surface de la pierre, en particulier de plaques de pierre ou similaire, tels que marbres, granits, mais aussi céramiques et autres matériaux de construction, utilisés pour les sols et revêtements - Google Patents

Machine pour le traitement de surface de la pierre, en particulier de plaques de pierre ou similaire, tels que marbres, granits, mais aussi céramiques et autres matériaux de construction, utilisés pour les sols et revêtements Download PDF

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Publication number
EP0980740B1
EP0980740B1 EP99115671A EP99115671A EP0980740B1 EP 0980740 B1 EP0980740 B1 EP 0980740B1 EP 99115671 A EP99115671 A EP 99115671A EP 99115671 A EP99115671 A EP 99115671A EP 0980740 B1 EP0980740 B1 EP 0980740B1
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EP
European Patent Office
Prior art keywords
belts
machine
shaping
polishing
grinding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99115671A
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German (de)
English (en)
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EP0980740A2 (fr
EP0980740A3 (fr
Inventor
Federico Benetti
Barnes C/O Benetti Ken
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Benetti Meyers International Srl
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Benetti Meyers International Srl
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Publication of EP0980740A3 publication Critical patent/EP0980740A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces

Definitions

  • the invention relates to a machine for stone surface treatment, according to the preamble of claim 1.
  • Prior art grinding and/or polishing machines include a typically horizontal conveyor which consists of a roller track or of a belt whereon the slabs made of materials like stone, marble, granite, rock or the like are fed along grinding and/or polishing heads.
  • Grinding and/or polishing heads consist of rotating grinding disks mounted on the shaft of a motor drive. Said heads are mounted on transverse guides and are moved back and forth transverse to the slab feed direction so that the latter can be processed all over their width.
  • an effective processing can be only obtained by providing a great number of grinding heads on the conveyor, aligned in the slab feed direction.
  • the grinding and/or polishing machine has huge dimensions and, besides being bulky , it is also very expensive.
  • Machines for shaping the peripheral edges of stone pieces, such as slabs, or the like are known. These machines are also typically provided with processing heads which interact with a workpiece, means being provided for relative motion of the piece with respect to the head.
  • the processing head cooperates with very small areas of the peripheral edges of the pieces, whereby, in case of considerable irregularities, means must be provided for adjusting the relative transverse position between the shaping head and the edge of the slab being processed, which involves problems substantially similar to those related to grinders-polishers.
  • the invention is based on the problem of providing a machine which, by simple and inexpensive means, as compared to prior art machines, allows to perform grinding, polishing and/or shaping operations on the peripheral edges of stone pieces, or the like, without involving the above drawbacks.
  • the invention achieves these purposes by providing a machine as described hereinbefore, according to the characterizing part of claim 1.
  • the grinding and/or polishing and/or shaping means have the active surface on the radially outer peripheral side of the belt, band or chain along its annular path or of the roller.
  • the grinding and/or polishing and/or shaping means consist of small belts having diamond elements like those used for cutting stone blocks and/or for cutting the latter into slabs.
  • the invention allows not only to provide less expensive and cumbersome machines, but also to effectively use diamond elements, so that this processing can be extended to any type of material and not only to stones in general but also to marbles, granites, as well as ceramics and other building materials used for flooring and lining.
  • the belts or bands for polishing and/or grinding the faces of the slabs or the like extend all over the width of the workpiece feed path, a maximum width for workpieces being provided.
  • the belt/s or bands for shaping the edges are oriented in the workpiece longitudinal feed direction and are placed at the sides of the feed path.
  • one single belt or band or several successive belts or bands cascaded in the workpiece feed direction may be provided.
  • At least one grinding and/or polishing unit may be provided, comprising three parallel, adjacent and slightly spaced belts, which are driven together.
  • the belts of each unit may have identical or different grinding members as regards the grinding grain thereof, i.e. of the diamond powder or particles.
  • the belts are disposed in such a manner that the members having a decreasing grain are placed after those with a larger grain with reference to the piece feed direction.
  • the belts or bands have at least one straight branch parallel to the conveying surface and at a distance therefrom so as to be able to interact with the surface to be processed of the pieces.
  • At least the above active branch of the belt/s interacts with belt-guiding means, whereas the contact surface between the belts and the guide means may be plane, semiplane, inclined, V-shaped, semicircular, etc.
  • the belts or bands have, for instance, an inner continuous and axial appendix which is designed for engagement in guide throats of grooved belt-guiding means.
  • the belt-guiding means consist of a belt-guiding plate which has a groove for engaging the belt or the inner rib thereof and extends substantially all along the active branch, continuously or in sectors, whereas at the ends of the plate, return and drive pulleys are provided, which are preferably substantially placed outside the workpiece feed path.
  • the belt-guiding grooves are preferably associated to means for feeding a fluid into the grooves to generate a slide bearing, e.g. with a so-called "aquaplaning" effect.
  • the belt-guiding means consist of lines of wheels or rollers having annular guide grooves, which are spaced in a predetermined manner along the active branch of the belt.
  • the belts are arranged transversely to the translation motion of the workpieces, allowing to perform roughing, grinding and shaping operations, and are parallel to the surfaces to be processed.
  • belt thrust-bearing means contrasting the transverse thrust exerted against the belts by the workpiece being fed.
  • these thrust-bearing means consist of idler rollers or wheels arranged in a certain order along the active branch of the belt/s and supported so as to rotate about axes perpendicular to the active surface of the belts and in contact with the side edge of the associated belt, which is provided downstream with respect to the workpiece feed direction.
  • the belts are disposed at the sides of the conveyor and have an operating straight branch which is parallel to the workpiece feed direction.
  • the belts are mounted on support guides to be driven in such a manner as to slide on an annular path with at least one operating straight path parallel to the workpiece feed direction.
  • the belts like the grinding ones may have diamond teeth shaped so as to complement the profile of the peripheral edge section of the piece to be obtained.
  • the bearing structure of the edge-shaping belts may be supported so that it can be inclined with respect to the piece conveying surface, whereby edges may be chamfered with various inclinations.
  • the edge-shaping belts may be also supported so that the distance of the active branch from the longitudinal median axis of the piece conveying path can be adjusted.
  • These belts my be also supported so as to enable level adjustment with respect to the workpiece conveying path.
  • the edge-shaping belts may be mounted so that they can be progressively moved towards the central axis of the path, with the workpiece being stopped until the edge has been leveled and shaped.
  • Irregular side edges may be leveled by means of a special side leveling belt, specifically designed and supported for this task, whereas the shaping operation may be performed downstream from said leveling or edge-rectifying station, in a subsequent shaping station provided with a special shaping belt.
  • means for trimming the irregular part of the side edges of the piece may be provided before the shaping belts and may consist of circular saws, of the band type or similar, or of cutting belts oriented perpendicular to the piece feed path and vertically movable against the workpieces.
  • the grinding and/or polishing and/or shaping belts or bands may be further mounted so that they can move towards or away from the surface to be processed of the pieces, and in combination with elastic members with a predetermined load of the active branches thereof against the surfaces being processed.
  • These load means may be also pressure-adjustable.
  • the polishing belts may be also supported so that they can be height-adjusted to set the operating position and possibly an idle position wherein they are at a distance from the surface to be processed with reference to the thickness of the workpieces.
  • polishing tools In combination with the belts for polishing and/or shaping the peripheral edges of the workpieces, polishing tools may be provided.
  • These tools may consist of belts with polishing members, or of polishing rollers provided in such a position as to cooperate with the corresponding surfaces, like the belts.
  • the belts for shaping the edges and those for grinding, as well as the means for trimming the edges and the polishing means may be combined in a single machine, having a plurality of successive stations, in which said processing means are provided and along which stations the piece feed path develops.
  • machines may be also provided, each designed for a specific processing task, such as a machine for grinding and/or polishing piece faces; a machine for shaping and/or polishing edges, possibly combined with edge-trimming means or even with a specific edge-trimming machine
  • a grinding and polishing machine for instance for grinding/polishing slabs made of materials like marble, granite, or the like, includes a conveyor 1 which can be of any type, such as a rotatably driven continuous band, a bearing surface movable on guides by motor drives, an idler track combined with pushers, etc.
  • the conveyor 1 consists of a conveyor band whose conveying branch is oriented horizontally.
  • a grinding station 20 consisting of at least one diamond toothed belt, preferably of a unit of three diamond toothed belts 2, 2', 2''.
  • the belt/s 2, 2', 2'' are similar to the belt/s used in combination with arms for cutting stone or rock.
  • the three belts are closed and returned about two pulleys 3, 4 which rotate about a horizontal axis oriented in the feed direction of the conveyor 1.
  • the two return pulleys 3, 4 are disposed substantially out of the corresponding longitudinal, side edge of the conveyor 1, so that they form an active branch 102 which is parallel or substantially parallel to the conveying surface, while facing the latter.
  • the belts 2, 2', 2'' are oriented by their peripheral upper edge towards the conveying surface and by their longitudinal axis transverse to the conveyor 1, particularly perpendicular thereto.
  • a motor M drives rotatably at least one of the pulleys 4.
  • the active or operating branches of belts 2, 2', 2'' are guided by common guide plates 5 oriented parallel thereto.
  • the belts have, as is known in machines having a cutting arm, a central appendix which may be continuous or consisting of a plurality of extensions, spaced in the longitudinal direction of the belts.
  • This appendix 202 is engaged inside a guide consisting of a groove 205 complementing the appendix 202 of the belts 2, 2', 2''.
  • the guide has a plurality of holes 105, communicating with a distribution chamber 6, which can be common, as shown, or separated for each guide 105 of each belt.
  • the guide is constantly lubricated during operation by a plurality of water jets which form a sort of slide bearing, water also having the function to keep the guide free from cutting and grinding residues.
  • the belt has a T cross section and the guide also has bearing and sliding surfaces for the wings of the T shape, in addition to those for the extension 202.
  • section shapes of the belt 2, 2', 2'' can vary though still contributing to produce the desired effect.
  • Belts as those in use in the machine according to the invention consist of a plurality of diamond teeth 302 which are typically equally spaced all along a metal wire or more twisted wires, whereas a body made of an elastic plastic material 402 similar to rubber coats the wire filling the spaces between the diamond teeth, substantially flush therewith and provides the belt with a continuous final shape.
  • Such belts are known and described in greater detail, for instance in patent EP 773092.
  • Diamond toothed belts have diamond coated teeth with different grain sizes and are generally disposed in such an arrangement that the grain sizes decrease in the piece feed direction.
  • the active surface of the diamond teeth 402 is plane and oriented parallel to the face of the piece to be ground.
  • the conveyor 1 and the grinding belts 2, 2', 2'' are supported in such a way as to enable distance adjustment. This may be provided either by a lifting and lowering movement of the conveyor with respect to the belts, or by a lifting and lowering movement of the belt, or even thanks to vertical adjustment means either of the conveyor 1 or of the belts 2, 2', 2''.
  • the active branches 102 of the belts 2, 2', 2'' are guided in the belt guiding plate which is stationary.
  • operating pressers may be provided, which act on the plate, e.g. linear actuators and/or elastic pressers, such as springs or the like. These pressers may be gauged so as to ensure a predetermined constant pressing force exerted by the active branches of the belts on the workpiece.
  • a polishing station 21 Downstream from the grinding station, a polishing station 21 is provided. With reference to fig. 1, it has a polishing roller 8, which can rotate about a horizontal axis, parallel to the conveying surface and substantially transverse to the feed direction A of the piece P on the conveyor 1.
  • the polishing roller 8 may be rotatably driven by a special motor 7 and is supported at its ends, which are out of the longitudinal side edges of the conveyor 1. As described with reference to the belts 2, 2', 2'', the polishing roller 8 may be supported in such a way as to enable height adjustment and/or have pressers to exert a predetermined operating pressure of the polishing roller 8 on the workpiece P.
  • the machine according to the invention has an additional functionality with respect to prior art grinding machines.
  • height adjustment means for said two parts with respect to the conveyor surface at the ends of the polishing roller 8 and at the return pulleys of the belts 2, 2', 2'', grinding and polishing operations may be performed even on pieces with inclined exposed surfaces, i.e. wedge- or trapezoid-shaped pieces.
  • the two return pulleys of the belts 2, 2', 2'' and the ends of the polishing roller may be positioned at different heights, thereby providing that the active branches of the belts 2, 2', 2'' and the tangent line between the polishing roller and the workpiece are accordingly inclined with respect to the horizontal plane.
  • This functionality is not limited to grinding, but may be also used to thin the workpiece as desired .
  • polishing means may be provided, alternatively consisting of polishing belts having polishing members equally spaced over the belt, or even in a continuous arrangement thereon, instead of the diamond teeth.
  • This variant is shown in fig. 7, in which the three belt unit is denoted with numeral 8'.
  • the machine according to the invention can also have more than one grinding station 20 and/or polishing station.
  • the grinding stations 20 can have each one belt 2 or more belts 2, 2', 2'' grouped therein.
  • the machine according to the invention can have, alternatively to or in combination with the station/s for grinding 20 and polishing 21 the face of the workpiece P one or more stations for shaping 22 and polishing 23 the peripheral edges of the piece P, e.g. of a slab or the like.
  • the conveyor 1 is narrower than the worpiece, whereas on at least one longitudinal side of the conveyor 1 a diamond toothed belt 10 is provided, which faces, by its active branch, the facing edge of the workpiece P and is parallel to the feed direction A of the conveyor 1.
  • the opposite peripheral edges of the workpiece can be shaped.
  • Each diamond toothed belt 10 for shaping the edges is returned about two pulleys 11 whose axis is oriented perpendicular to the surface which conveys the piece P and at least one of which is rotatably driven by a motor 111.
  • the active branch 110 of the shaping belt may run inside a guide also provided with holes 105 for feeding a washing and lubricating liquid, particularly water.
  • the guide 5 also has a continuous throat 205, wherein an extension 210, which may be continuous or composed of individual equally spaced projections on the inner face of the belt 10, is slidably engaged.
  • the grinding belt 10 may be supported in such a way as to enable height adjustment with respect to the conveyor surface 1, by moving the surface or by moving the belt or by a combination of the two adjustments, as provided for the grinding belts 2, 2', 2''.
  • the shaping belt 10 may be provided in combination with either operating and rigid or elastic pressers, whereby the active branch of the belt is pushed with a predetermined force against the edge of the piece P.
  • the two return pulleys 11 are supported so that they can be inclined together with respect to the perpendicular orientation of their axes, in such a manner that their diamond teeth 310 are inclined with respect to the surface of the peripheral edge facing them, in order to perform chamfers or the like.
  • the active side of the diamond teeth 310 may be rectilinear or shaped in various ways, concave, rounded and symmetrical with respect to the median horizontal plane of the workpiece, asymmetrical or with particular curve shapes.
  • the inclination of the shaping belt 10 with respect to the horizontal plane may be adjusted to a stable position, or the oscillation may be continuous so as to obtain a rounded shape with the help of flat teeth only.
  • the teeth 310 may have the suitable shaping to provide the peripheral edge of the workpiece with the desired shape.
  • Figs. 5 and 6 show two examples of shaping belts 10 having round concave or V-shaped teeth 310 respectively.
  • the construction of the shaping belt 10 is very similar to that of the above described grinding belts 2, 2', 2'' and hence similar to the diamond toothed belts used for cutting.
  • means for rectifying or trimming said edges may be provided.
  • the shaping belts which, in this case, can be further moved to a predetermined extent against the edge to be processed, e.g. by mounting the return pulleys 11 on special horizontal transverse slides or anyway parallel to the surface of the conveyor 1.
  • the supporting slides and the means for driving them are not shown because they are not a problem for the skilled person and may be made in any manner.
  • trimming belts or similar may be provided in a station before the edge shaping station.
  • the trimming means may be of any type, even possibly cutting belts mounted in the piece feed direction and vertically movable against it, as well as adjustable in their transverse position, i.e. in their distance from the central axis of the conveyor.
  • a piece-turning member may be provided, for instance after the edge-shaping station, whereby the piece is oriented to enable processing of a further edge, which before was oriented transverse to the piece feed direction.
  • Said operating units i.e. the piece-turning member and the edge-trimming means may be provided in combination with the shaping belts 10 integrated in the same machine or in a separate machine.
  • the shaping belts and said units for trimming and rotating the piece can be integrated in a grinding or polishing machine.
  • the edge-shaping station 22 is followed by an edge-polishing station 23, which can include one or more polishing rollers 13 having perpendicular axes, arranged along the longitudinal edges of the conveyor 1 and possibly allowing orientation and/or adjustment as regards the distance from the corresponding longitudinal edge of the conveyor.
  • an edge-polishing station 23 can include one or more polishing rollers 13 having perpendicular axes, arranged along the longitudinal edges of the conveyor 1 and possibly allowing orientation and/or adjustment as regards the distance from the corresponding longitudinal edge of the conveyor.
  • the rollers may also consist of one or more polishing belts 13', as already described with reference to the means for polishing the workpiece faces.
  • a piece-turning member may be also associated to the edge-polishing station 23, downstream or upstream therefrom, in order to bring different peripheral edges into the operating position, with different orientations.
  • a considerable advantage in using diamond toothed belts for grinding exposed faces of slabs or the like and for shaping edges consists in that, due to their remarkable construction simplicity and functional effectiveness, these inventive arrangement can be used both in very simple and small-sized machines specially designed for grinding and/or polishing and for edge-shaping and/or polishing and, by a combined assembly, in integrated machines, which can perform all the above operations, possibly automatically, like in timber industry. All this, here too, without requiring an excessively huge structure and an excessively complex machine.
  • Diamond belts due to the heavy tasks they currently have in cutting marble blocks in quarries are highly resistant and strong tools, which provide the machine of the invention with operational safety features and require little maintenance.
  • diamond toothed rollers may be provided instead of diamond toothed belts.
  • This arrangement might provide rollers having one or more lines of diamond teeth arranged radially and solidarized by an injection of plastic.
  • face grinding could be performed by providing the rollers arranged transversely to the piece feed direction and above the piece with diamond teeth rings, in circumferential intercalation and partially axially superposed so as to prevent them from being spaced in the axial direction.
  • face grinding could be performed by providing the rollers arranged transversely to the piece feed direction and above the piece with diamond teeth rings, in circumferential intercalation and partially axially superposed so as to prevent them from being spaced in the axial direction.
  • This construction is a solution to the above problems of prior art.
  • the rollers could be more difficult to manufacture with the necessary tolerances, and especially more expensive than belts, even because belts are fabricated with processes that have been used for a long time and do not require special manufacturing facilities.
  • Fig. 8 shows an advantageous variant embodiment of the belt-guiding plate 5 for diamond belts 2.
  • this improvement is shown with reference to one belt, but may be also applied easily and with appropriate adjustments, to the belt-guiding plate of fig. 4 whereto more parallel and adjacent belts are associated.
  • thrust-bearing guides or means 30 are provided on the downstream side of each belt.
  • These thrust-bearing guides or means may be made in any manner and may consist of a stationary slide guide along which the corresponding side of the belt, preferably the one without diamond teeth and inserts runs, adhering against it, while it is possible or advantageous to provide in this case lubricating fluid bearing means like those provided in the guide of the associated belt.
  • the thrust-bearing means may consist of means whose contact surfaces with the sides of the belt slide together with the associated contact surface of the belt 2, such as a line of rollers or a belt or a band.
  • the rollers and/or the belt or the band may be idle and be dragged by the grinding belt 2, or even driven by special drives.
  • Fig. 8 shows, by way of schematic example, the variant of the thrust-bearing idlers denoted with numeral 30.
  • the latter show a variant embodiment of the belt-guiding means.
  • the belt/s are guided by a line of rollers 31 with peripheral coaxial annular grooves 131.
  • the rollers may be at any distance from each other, possibly even different from each other.
  • the rollers may be regularly supported to be in line in the grinding surface, even by elastic and shock-absorbing suspensions.
  • Fig. 10 shows a construction example of guide means for rollers 31, like in fig. 4.
  • a bracket 33 bears a line of horizontal and parallel adjacent axles for rotatable support of the guide rollers 31.
  • Each axle can bear, in line with the guide rollers 31 of the corresponding belt 2, a roller for one of more adjacent belts 2 respectively.
  • the rollers 31 are coaxial to each other and can be separated or made from one piece in a single guide roller having several peripheral coaxial annular grooves, as schematically indicated by the dashed lines 32 connecting the peripheral shells of the individual rollers 31 in fig. 10.
  • means for feeding fluid may be also provided, said fluid having almost exclusively the function to wash the rotary roller supports.
  • thrust-bearing means may be provided for each belt, which may be made in any manner, as described in the previous paragraphs, relating to fig. 8.
  • the invention is not limited to what is described above and claimed below but may be greatly varied especially as regards construction.
  • the individual parallel belts and/or the successive units of grinding belts may be provided at different levels, for workpiece roughing or thickness calibration purposes, i.e. at progressively reducing levels with respect to the supporting surface of the workpiece in the workpiece feed direction. All this within the scope of the appended claims.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finishing Walls (AREA)
  • Floor Finish (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Laminated Bodies (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Claims (40)

  1. Machine pour le traitement de surface de la pierre, en particulier pour des dalles de pierre ou d'un matériau similaire, qui comprend des moyens (2, 2', 2'', 10, 8, 8', 13, 13') de meulage et/ou de polissage et/ou de façonnage des bords ou des arêtes et des moyens (1) pour le transport des pièces (P) vers lesdits moyens de meulage et/ou de polissage et/ou de façonnage (2, 2', 2", 10, 8, 8', 13, 13'), comprenant au moins un outil de meulage et/ou de polissage et/ou de façonnage qui consiste en plusieurs éléments de meulage et/ou de polissage et/ou de façonnage (402, 310) qui sont montés sur des transporteurs annulaires, ayant la forme d'une bande, d'une chaíne ou d'une courroie continue, lesquels moyens (2, 2', 2'', 10, 8', 13') sont entraínés de manière à pouvoir tourner autour d'un axe, caractérisée en ce que les courroies ou bandes (2, 2', 2'', 10, 8', 13') possèdent au moins un brin actif rectiligne (102, 110) parallèle à la surface de transport (1) qui est prévu à une certaine distance de celle-ci de telle sorte que lesdits brins rectilignes interagissent avec la surface à traiter des pièces (P).
  2. Machine selon la revendication 1, caractérisée en ce que les éléments de meulage et/ou de polissage et/ou de façonnage (310, 402) ont leur surface active disposée sur le côté périphérique radialement externe de la courroie, de la bande ou de la chaíne sur sa trajectoire annulaire (2, 2', 2'', 10).
  3. Machine selon la revendication 1 ou 2, caractérisée en ce que les éléments de meulage et/ou de polissage et/ou de façonnage (310, 402) consistent en de petites courroies ayant des éléments en diamant du type de ceux utilisés pour couper des blocs de pierre et/ou pour couper ceux-ci pour en faire das dalles.
  4. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que la/les courroie(s) ou bande(s) (2, 2', 2'', 10) pour polir et/ou meuler les faces des dalles ou similaires s'étendent sur toute la largeur de la trajectoire d'alimentation des pièces, une largeur maximum étant prévue pour les pièces (P).
  5. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que la/les courroie(s) ou bande(s) (10) pour façonner les arêtes sont orientées dans le sens d'alimentation longitudinal des pièces (P) et sont placées sur les côtés de la trajectoire d'alimentation (1).
  6. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend une courroie ou une bande unique (2, 10) ou plusieurs courroies ou bandes successives (2, 2', 2'', 10) disposées en cascade dans le sens d'alimentation (A) des pièces (P).
  7. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend au moins une unité de meulage et/ou de polissage comprenant deux, trois courroies parallèles ou plus, qui sont adjacentes et légèrement espacées, lesquelles courroies (2, 2', 2'') sont entraínées ensemble.
  8. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (2, 2', 2'') de chaque unité peuvent avoir des éléments de meulage (402) identiques ou différents en ce qui concerne leur grain de meulage, c'est-à-dire de la poudre ou des particules de diamant.
  9. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (2, 2', 2'') dont les grains sont différents sont disposées de telle manière que les éléments (402) dont le grain est décroissant sont, par rapport au sens d'alimentation (A) des pièces (P), placés après ceux dont le grain est supérieur.
  10. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les différentes courroies successives (2, 2', 2'') sont placées à une distance de la surface de transport des pièces (P) qui, par rapport au sens d'alimentation des pièces (P), diminue progressivement pour chaque courroie de la succession l'une après l'autre.
  11. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies ou les bandes (2, 2', 2'', 10) possèdent un appendice arrière continu et axial (202, 210) qui est conçu pour s'engager dans des moyens de guidage rainurés (5, 205 ; 31, 131) et dans les poulies de retour ou les poulies d'entraínement (3, 4, 11) placées aux extrémités desdits moyens de guidage (5, 205, 31, 131), essentiellement en dehors de la trajectoire d'alimentation (1) des pièces (P).
  12. Machine selon la revendication 11, caractérisée en ce que les moyens de guidage de la/des courroie(s) (2) consistent en des gorges de guidage (5, 205) d'une plaque (5) de guide de courroie, en association avec le fluide fourni pour générer un roulement à frottement réduit, particulièrement avec un effet dit d'aquaplaning.
  13. Machine selon la revendication 11, caractérisée en ce que les moyens (31, 131) pour guider la/les courroie(s) (2, 2', 2'', 10) consistent en des lignes de rouleaux (31) dotés de gorges annulaires coaxiales (131), qui sont soutenus de manière à pouvoir tourner, libres ou entraínés par moteur, et lesquels rouleaux (31), dans le cas de plusieurs courroies adjacentes (2, 2', 2''), sont séparés ou intégrés dans un rouleau unique (32), doté de plusieurs rainures annulaires coaxiales.
  14. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que chaque courroie de meulage (2, 2', 2'') qui agit sur une pièce (P) dont le sens d'alimentation est transversal, en particulier perpendiculaire au brin actif des courroies (2, 2', 2''), est dotée d'un dispositif de butée transversale (30) qui est en contact avec le côté de leurs courroies respectives (2, 2', 2'') en aval de celles-ci par rapport au sens d'alimentation des pièces (P).
  15. Machine selon la revendication 14, caractérisée en ce que le dispositif de butée (30) consiste en des guides fixes le long desquels se déplacent les côtés des courroies (2, 2', 2''), éventuellement en association avec le fluide alimenté pour générer un roulement à frottement réduit, grâce à l'effet d'aquaplaning.
  16. Machine selon la revendication 14, caractérisée en ce que le dispositif de butée possède des surfaces de contact avec les côtés des courroies (2, 2', 2''), se déplaçant avec celles-ci ou roulant sur celles-ci, telles que des courroies ou des bandes ou des lignes de rouleaux (30), qui peuvent être immobiles et entraínées par leur courroie respective (2, 2', 2''), ou même entraínées par moteur.
  17. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que, en association avec les courroies ou bandes de meulage et/ou de polissage (2, 2', 2'', 8), des outils pour façonner les bords périphériques des pièces (P) sont prévus, en particulier parallèlement au sens d'alimentation (A) des pièces (P), et consistent également en des courroies ou des bandes dont les éléments de façonnage sont de type diamant (301).
  18. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que, en association avec les courroies ou bandes de meulage et/ou de polissage (2, 2', 2'', 8), des outils pour façonner les bords périphériques des pièces (P) sont prévus, en particulier parallèlement au sens d'alimentation (A) des pièces (P), identiques ou similaires aux courroies de coupe crantées en diamant.
  19. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (10) de façonnage des bords périphériques sont placées sur les côtés du transporteur (1) et possèdent un brin actif rectiligne (110) qui est parallèle au sens d'alimentation (A) des pièces (P).
  20. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (10) sont montées sur un dispositif de guide de soutien (5 ; 31) pour être entraínées de manière à glisser sur une trajectoire annulaire avec au moins une trajectoire active rectiligne (110) parallèle au sens d'alimentation (A) des pièces (P).
  21. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (10) de façonnage sont réalisées conformément aux revendications 1 à 15 et possèdent des dents en diamant (310) dont la forme permet de compléter le profil de la section de bord périphérique de la pièce (P) devant être obtenue.
  22. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que la structure de roulement des courroies (10) de façonnage des bords peut être inclinée relativement à la surface de transport (1) des pièces (P), les bords pouvant ainsi être chanfreinés dans différentes inclinaisons.
  23. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que le mouvement d'inclinaison angulaire des courroies (10) de façonnage des bords périphériques peut être prédéfini de manière stable ou peut être un mouvement alternatif continu d'oscillation.
  24. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (10) de façonnage des bords sont soutenues de sorte que la distance du brin actif (110) depuis l'axe médian longitudinal de la trajectoire de transport (1) des pièces (P) peut être réglée.
  25. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (10) de façonnage des bords sont soutenues de sorte que leur niveau relativement à la trajectoire de transport (1) des pièces (P) peut être réglé.
  26. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (10) de façonnage des bords périphériques des pièces (P) sont soutenues de manière à être progressivement déplaçables vers l'axe central de la trajectoire (1) suivie par la pièce (P) et en s'éloignant de celui-ci afin d'effectuer des opérations de rectification et d'égalisation sur le bord périphérique lors du façonnage.
  27. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que, en association avec la/les courroie(s) (10) de façonnage des bords périphériques, lesdites courroies sont dotées en aval de moyens d'égalisation ou de finition desdits bords périphériques, qui peuvent être constitués de courroies pour l'égalisation ou la rectification desdits bords et/ou d'outils de finition opérant dans le sens d'alimentation (A) des pièces (P).
  28. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies de meulage et/ou de polissage (2, 2', 2'', 8') sont soutenues de sorte que leur distance depuis la surface de transport (1) des pièces (P) peut être réglée.
  29. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies de meulage et/ou de polissage de la face de la pièce (P) ainsi que celles (10, 13') destinées à façonner et/ou polir les bords de ladite pièce (P) peuvent être chargées dans une mesure prédéterminée, au moyen de presseurs rigides ou élastiques, les brins actifs (102, 210) de ceux-ci étant contre les surfaces en cours de traitement.
  30. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est dotée, en association avec au moins les courroies (10) de façonnage des bords et/ou avec les moyens de polissage associés à celles-ci, d'un dispositif de retournement des pièces qui oriente les autres bords périphériques de la pièce parallèlement à son sens d'alimentation.
  31. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que, en association avec la/les courroie(s) (2, 2', 2'') de meulage de la face exposée de la pièce (P) et/ou avec les courroies (10) de façonnage des bords périphériques de celle-ci, des outils de polissage (8, 13, 8', 13') sont prévus, en aval depuis leurs courroies respectives (2, 2', 2'', 10).
  32. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les moyens de polissage sont constitués d'une ou plusieurs courroies (8', 13') dotées d'éléments de polissage, ou de rouleaux de polissage (8, 13), disposés de manière à interagir avec les surfaces correspondantes, meulées ou façonnées par les courroies (2, 2', 2'', 10) de meulage et/ou de façonnage des bords.
  33. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les courroies (2, 2', 22) de meulage de la/des face(s) de la pièce (P) et les moyens de polissage (8, 8') sont montés avec leurs extrémités en dehors des bords latéraux du transporteur (1) des pièces (P), et soutenus de manière à être déplaçables à différents niveaux, de manière à générer une inclinaison des brins actifs (102) ou des tangentes à la pièce (P) relativement à la surface de transport.
  34. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que les moyens de moulage des faces des pièces (P) et les moyens de façonnage des bords périphériques des pièces (P) sont constitués de rouleaux, dotés, à leur périphérie, de dents en diamant disposées sur les enveloppes périphériques des rouleaux, afin d'effectuer une opération de meulage et/ou de façonnage homogène.
  35. Machine selon la revendication 34, caractérisée en ce que les dents radiales sont espacées et disposées sur au moins une ou plusieurs bandes annulaires des rouleaux et en ce que chaque bande annulaire de dents radiales en diamant possède des dents disposées en quinconce relativement à la bande de dents adjacentes, les dents des deux bandes étant partiellement superposées axialement.
  36. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle possède un ou plusieurs postes (20) en cascade pour meuler la face d'une pièce (P).
  37. Machine selon la revendication 36, caractérisée en ce qu'elle possède un ou plusieurs dispositifs pour polir la face d'une pièce (P).
  38. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle possède au moins un poste (22) pour façonner les bords périphériques d'une pièce (P).
  39. Machine selon la revendication 38, caractérisée en ce qu'elle possède au moins un poste (13, 13') pour polir les bords périphériques façonnés des pièces (P).
  40. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle possède une combinaison d'un ou plusieurs postes (20, 21, 22, 23) pour meuler une face de la pièce, pour la polir, pour façonner les bords périphériques de la pièce et pour les polir, intégrés à celle-ci.
EP99115671A 1998-08-20 1999-08-09 Machine pour le traitement de surface de la pierre, en particulier de plaques de pierre ou similaire, tels que marbres, granits, mais aussi céramiques et autres matériaux de construction, utilisés pour les sols et revêtements Expired - Lifetime EP0980740B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998SV000046A IT1305414B1 (it) 1998-08-20 1998-08-20 Macchina per la lavorazione superficiale di pietra, in particolaredi lastre di pietra o simili, come marmi, graniti, ma anche
ITSV980046 1998-08-20

Publications (3)

Publication Number Publication Date
EP0980740A2 EP0980740A2 (fr) 2000-02-23
EP0980740A3 EP0980740A3 (fr) 2003-03-12
EP0980740B1 true EP0980740B1 (fr) 2004-11-24

Family

ID=11408297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115671A Expired - Lifetime EP0980740B1 (fr) 1998-08-20 1999-08-09 Machine pour le traitement de surface de la pierre, en particulier de plaques de pierre ou similaire, tels que marbres, granits, mais aussi céramiques et autres matériaux de construction, utilisés pour les sols et revêtements

Country Status (5)

Country Link
EP (1) EP0980740B1 (fr)
AT (1) ATE283145T1 (fr)
DE (1) DE69922095T2 (fr)
ES (1) ES2234191T3 (fr)
IT (1) IT1305414B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006013598A1 (fr) * 2004-08-06 2006-02-09 Gerardo Petruzzelli Procédé de construction de meule diamant pour le façonnage de pierres et des roues obtenues
DE102014101682A1 (de) * 2014-02-11 2015-08-13 Bernd Riepe Mobile Holzbearbeitungsmaschine
ITUA20164621A1 (it) * 2016-06-23 2017-12-23 Ancora Spa Impianto e metodo di calibratura e/o squadratura di elementi squadrabili, quali manufatti ceramici o pietre naturali e simili
IT201900023637A1 (it) * 2019-12-11 2021-06-11 Scm Group Spa Macchina levigatrice dotata di un dispositivo ausiliario per favorire il montaggio di un nastro abrasivo.
CN112814309A (zh) * 2020-12-30 2021-05-18 浙江宏恩装饰工程有限公司 一种石材阳角结构及其处理方法
CN116810529B (zh) * 2023-05-09 2026-07-31 安徽忠盛新型装饰材料有限公司 一种木门表面原木贴皮平整砂光设备及其实施方法
CN116984962B (zh) * 2023-06-06 2024-09-27 安徽鼎立智能制造股份有限公司 一种制造气门用的打磨设备
CN116652290B (zh) * 2023-07-28 2023-09-26 自贡长盈精密技术有限公司 一种动力电池用铝型材精密锯

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1227736B (it) * 1988-12-28 1991-05-06 Alberto Filippini Fantoni Cavo con inserti diamantati guidati per il taglio di materiali lapidei e dispositivo a guida fissa per tale cavo
US5085008A (en) * 1990-02-15 1992-02-04 Versicut, Ltd. Apparatus and method for cutting and grinding masonry units
EP0547995A1 (fr) * 1991-11-29 1993-06-23 Sistemas Electro-Mecanicos S.A. Poligono Ind. "El Mijares" Machine de meulage et chanfreinage
IT1282487B1 (it) * 1995-11-08 1998-03-23 Benetti Meyers International S Cinghietta diamantata per il taglio di pietre.
DE59701056D1 (de) * 1996-05-30 2000-03-02 Faller Jun Ziegel-Schleifvorrichtung für die Herstellung von Planziegeln

Also Published As

Publication number Publication date
ATE283145T1 (de) 2004-12-15
DE69922095D1 (de) 2004-12-30
ITSV980046A0 (it) 1998-08-20
EP0980740A2 (fr) 2000-02-23
ES2234191T3 (es) 2005-06-16
IT1305414B1 (it) 2001-05-04
EP0980740A3 (fr) 2003-03-12
DE69922095T2 (de) 2005-07-14
ITSV980046A1 (it) 2000-02-21

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