EP0742076B1 - Une machine pour la mise à dimension et à l'équerre de blocs de matériaux tels que verre, pierre et marbre, carreau de céramique et similaires - Google Patents

Une machine pour la mise à dimension et à l'équerre de blocs de matériaux tels que verre, pierre et marbre, carreau de céramique et similaires Download PDF

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Publication number
EP0742076B1
EP0742076B1 EP19950830395 EP95830395A EP0742076B1 EP 0742076 B1 EP0742076 B1 EP 0742076B1 EP 19950830395 EP19950830395 EP 19950830395 EP 95830395 A EP95830395 A EP 95830395A EP 0742076 B1 EP0742076 B1 EP 0742076B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
machine
tile
bearing device
grinding wheels
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
EP19950830395
Other languages
German (de)
English (en)
Other versions
EP0742076A1 (fr
Inventor
Paolo Cuoghi
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.)
Onix SRL
Original Assignee
Onix SRL
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Filing date
Publication date
Application filed by Onix SRL filed Critical Onix SRL
Publication of EP0742076A1 publication Critical patent/EP0742076A1/fr
Application granted granted Critical
Publication of EP0742076B1 publication Critical patent/EP0742076B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding 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
    • 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

Definitions

  • the invention relates to a machine for sizing and squaring slabs of various materials.
  • the invention finds wide application since it is adaptable for sizing and squaring slabs of different kinds of material, such as glass, stone, ceramic material and the like.
  • the invention can be used for sizing and squaring ceramic tiles made of materials, such as porcelain stoneware, that after firing have to be taken on to finishing operations, such as grinding.
  • the prior art teaches sizing and squaring machines for such operations, which are structurally complex and expensive; setting and adjustment is also problematic and complex in these machines, with a resultant qualitative inconsistency in results obtained, especially after prolonged use.
  • the slab to be sized and squared moves along a line during which it is ground, by a plurality of opposed grinding wheels, on two opposite edges thereof that are parallel to its direction of advancement.
  • the grinding wheels are located in facing and opposite pairs along the line.
  • the distances between the two opposing grinding wheels of each pair are set according to the slab sizing required, the distances therebetween being graduated along the line diminishingly until a final pair thereof achieves a final desired workpiece size.
  • the workpiece is drawn by a conveyor to which it is pressed by means of rollers or belts (speed-synchronized with the conveyor) acting as pressors.
  • Prior art realizations characterized by an ability to carry out both sizing and squaring phases are equipped with a first series of grinding wheels, as described above, and thereafter include a rotating device which rotates the piece, usually by 90°.
  • the rotating device is provided with simple means for introducing and transferring the piece to a second sizing unit, almost identical to the first, which sizes the two remaining unground opposite sides.
  • the prior art document DE-U-1826154 discloses a machine for sizing and squaring slabs of material such as glass, stone and marble, ceramic tiles and the like, including a first frame (1,9), one workpiece bearing device (8) onto which one tile can be placed, one drive head (15, 16, 19, 21, 22, 23) bearing one rotating grinding wheel (19) destined to work on at least one side of said tile (13); said workpiece bearing device and said drive head being constrained to said frame (1, 9) in such a way as to enable a relative notion thereof in at least one plane which is not parallel to a lie plane of said tile.
  • the technical effect is to be able to present various surfaces of the tile to the grinding wheel, so as to grind them, and to hold the workpiece fast.
  • DE-C-38548 discloses several revolvable workpiece-bearing devices able to present different faces of a stonelike plate to a grinding wheel, see descriptions of S2, S3, S4, also claim 5. Of these, S2 and S3 explicitely allow for precise positioning, S3 with a division (see page 2, column 2, last paragraph) S2 with precise indexing with notches (same column, second paragraph).
  • the present invention aims to resolve problems in the prior art by providing a machine which comprises:
  • One advantage of the present invention is that it is constructionally simple.
  • a further advantage is represented by its structural configuration which makes it suitable for lengthy and continuous operations in a particularly hostile environment characterized by the presence of fine powders of extremely abrasive materials highly damaging to all kinds of mechanical coupling.
  • a still further advantage of the present invention is that it can be readily incorporated into a production line.
  • Yet another advantage of the present invention lies in the simplicity with which it can be adapted to various types of workpiece shapes.
  • 1 denotes in its entirety a fixed frame 1 to which a rotating platform 5, capable of rotating about a vertical axis, is fixed.
  • Each workpiece-bearing device 2 comprises a horizontal support surface 20 designed to accommodate a face of a slab, in the present case constituted by a ceramic tile 3.
  • Pneumatically activated means for blocking 21, operating above the support surface 20, are inferiorly equipped with a small plate 23.
  • the means for blocking 21 are preferably constituted by pneumatic cylinders whose cylinder end is solidly fixed to an arm 50 of the platform 5 while the cylinder stem is hinged by an end thereof to the small plate 23 in such a way that the small plate 23 can rotate with respect to the stem.
  • the small plate 23 is arranged vertically dead above the support surface 20 so that a single tile or a stack of tiles can be gripped therebetween.
  • the support surface 20 is mounted on an indexing device 22 of known type having a function of enabling precise, angularly predetermined rotations to be made about the vertical axis of rotation thereof.
  • the example shown in figures 1 and 2 exhibits a drive head 4 fixed to a mobile frame 10 which is hinged about a horizontal axis thereof to the fixed frame 1, said horizontal axis being also perpendicular to the axis of rotation of the platform 5 and to the axis of each single workpiece-bearing device 2.
  • the drive head 4 is fixed to the mobile frame 10 in such a way that its position can be set in a parallel direction to the axis about which the mobile frame 10 is pivoted to the frame 1.
  • a cutting tool constituted by a frontal grinding wheel 40 is mounted on the drive head 4. Because of its position, the frontal grinding wheel 40 operates along a vertical plane which is parallel to the axes of rotation of the workpiece-bearing devices 2. The advancing motion towards the drive head 4 and consequently to the grinding wheel 40 is caused by a double acting cylinder 6 connecting the mobile frame 10 to the fixed frame 1.
  • the platform 5 can also be set in predetermined positions and can rotate through 180° so as to alternatively place the workpiece-bearing devices into the positions indicated in the figures by the letters A and B.
  • Position A represents the working position whilst position B represents the loading and unloading position.
  • the drive head 4 is mounted on the mobile frame 10 in such a way as enable adjustment of the drive head position in a perpendicular direction to median line X-X containing both axes of the rotating platform 5 as well as the axes of rotation of each workpiece-bearing device 2 when the latter are in positions A and B.
  • the stack of tiles 3 is held fast on the workpiece-bearing structure 2 through use of means for gripping 21 which operate on the stack of tiles by means of the small plate 23.
  • the workpiece-bearing device 2 loaded with the stack of tiles 3 can be moved from position B to position A by a rotation of 180°. After the said rotation the two opposite edges of the tiles 3 in the stack are still parallel to line X-X.
  • the platform 5 is now blocked.
  • the drive head 4 can be moved foreward by action of the cylinder 6 which causes the grinding wheel 40 to interact with one edge of all the tiles 3 in the stack placed on the same side, and consequently one side of the stack of tiles 3 on the workpiece-bearing device 2 is levelled off.
  • the stack can be rotated by 90° or 180° using the indexing device 22 to bring adjacent or opposite sides of the tiles 3 into a workable position.
  • the sizing operation thereon is complete in one direction.
  • the size of the tiles when completely levelled off is twice the distance between the frontal grinding wheel 40 and line X-X.
  • the same operation can be repeated for the remaining two sides of the stack of tiles 3 to complete the sizing operation.
  • the use of the indexing head 22 allows for precise angular positioning of the stack of tiles 3 which are tightly gripped on the workpiece-bearing device 2.
  • the sizing and squaring of the stack of tiles 3 are carried out simultaneously.
  • the platform rotates by 180° and carries the stack of finished tiles to position B, and a new stack of tiles to be worked into position A.
  • two opposite drive heads 4 are mounted on the mobile frame 10 by adjustable couplings.
  • the size which will obtain is represented by the distance between the two opposite grinding wheels 40 keyed on the two drive heads 4.
  • the first embodiment offers the possibility of working simultaneously on two opposite sides of the stack of tiles 3 tightly blocked on the workpiece-bearing device 2.
  • the sizing and squaring operations are carried out rapidly and efficiently thanks to the structure of the machine incorporating the indexing head 22.
  • Exact sizing of the stack of tiles 3 is made possible by the fact that it is the same pair of opposite grinding wheels 40, mounted on the drive heads 4 which are both fixed on the same frame 10, that operate on opposite sides of the stack of tiles 3.
  • a second embodiment differs from the second in that it is equipped with drive heads on which edge-working grinding wheels 41 are mounted.
  • the axis of rotation of the grinding wheels 41 has to be situated in a plane parallel to that of line X-X.
  • the machine described in all the above-described first and second embodiments, is structured in such a way as to permit sizing and squaring of tiles. To sum up, the machine carries out the following operations:
  • the angle of rotation of the workpiece-bearing device 2 between one work phase and a next is 90°.
  • the workpiece-bearing device 2 is so shaped and realized as to permit positioning and gripping of an orderly stack of matching tiles.
  • a further advantage of the invention is its versatility thanks to which the machine can be used to work tiles or other slabs which are neither square nor rectangular.
  • Yet another advantage of the invention is its structural resistance to wear on mechanical couplings and components which is due to the presence of very fine particles of very hard materials which develop during the working of the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Milling Processes (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Claims (10)

  1. Une machine pour la mise à dimension et à l'équerre de blocs de matériaux tels que verre, pierre et marbre, carreaux de céramiques et similaires, comprenant:
    un châssis fixe (1);
    au moins un dispositif de support de blocs (2) sur lequel au moins un carreau (3) peut être placé;
    au moins une tête motrice (4) supportant au moins une roue rotative de coupe (40, 41) destinée à opérer sur au moins un côté dudit carreau (3); ledit dispositif de support de blocs (2) et ladite tête motrice (4) étant solidaires dudit châssis fixe (1) de manière à leur permettre un mouvement relatif par rapport à celui-ci dans au moins a plan non parallèle à un plan d'appui dudit carreau (3),
    caractérisée en ce que ledit dispositif de support de blocs (2), pouvant être pivoté et précisément positionné selon au moins un axe selon des angles différents par rapport audit châssis fixe (1), permet de maintenir le carreau fermement, et en ce qu'il comprend deux desdites têtes motrices (4), situées réciproquement opposées l'une à l'autre et supportant des roues de coupe disposées de manière à pouvoir opérer sur deux côtés opposés desdits carreaux (3); lesdites deux têtes motrices (4) étant fixées sur un châssis mobile (10) fixé audit châssis fixe (1) en un axe fixe et étant fixées au châssis mobile (10) au moyen d'accouplements réglables permettant de régler une distance désirée entre les roues de coupe montées sur les têtes motrices (4).
  2. La machine selon la revendication 1, caractérisée en ce que ledit dispositif de support de blocs (2) comprend une surface de support (20) sur laquelle peut être placée une face dudit carreau (3); au-dessus de ladite surface de support (20) opèrent des moyens de blocage (21) qui, lorsqu'ils sont activés, compriment ledit carreau (3) contre la surface de support (20) de manière à ce que celui-ci soit fermement maintenu.
  3. La machine selon la revendication 2, caractérisée en ce que ladite surface de support (20) et lesdits moyens de blocage (21) soient conformés pour interagir avec les zones centrales des faces dudit carreau (3).
  4. La machine selon la revendication 2, caractérisée en ce que ledit dispositif de support de blocs (2) et lesdits moyens de blocage (21) sont disposés et conformés de manière à accueillir une pile de carreaux (3) sur ladite surface de support (20).
  5. La machine selon la revendication 1 ou 4, caractérisée en ce qu'elle comprend deux desdits dispositifs de support de blocs (2) disposés dans des positions réciproques opposées sur une plateforme pivotante (5); ladite plateforme pivotante (5) pouvant pivoter au moins de manière à porter chacun des deux dispositifs de support de blocs (2) précisément dans une position précédement occupée par l'un des deux dispositifs de support de blocs (2).
  6. La machine selon la revendication 1, caractérisée en ce que lesdites têtes motrices (4) sont montées sur un châssis mobile (10) fixé sur ledit châssis fixe (1) en un axe fixe.
  7. La machine selon la revendication 1, caractérisée en ce que ledit châssis mobile (10) est fixé audit châssis fixe (1) en un axe perpendiculaire à un axe autour duquel ledit dispositif de support de blocs (2) peut être pivoté.
  8. La machine selon la revendication 1, caractérisée en ce que les roues de coupe sont constituées de roues de coupe à action frontale (40).
  9. La machine selon la revendication 1, caractérisée en ce que les roues de coupe sont constituées de roues de coupe à action périphérique (41).
  10. La machine selon la revendication 1, 8 ou 9, caractérisée en ce que lesdites roues de coupe (40, 41) montées sur lesdites têtes motrices (4) sont positionnées réciproquement opposées de manière à former deux plans de travail parallèles à l'axe de rotation selon lequel le dispositif de support de blocs (2) peut être angulairement pivoté au moyen d'un dispositif d'indexage (22).
EP19950830395 1995-05-08 1995-09-26 Une machine pour la mise à dimension et à l'équerre de blocs de matériaux tels que verre, pierre et marbre, carreau de céramique et similaires Expired - Lifetime EP0742076B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO950074 1995-05-08
IT95MO000074A IT1279803B1 (it) 1995-05-08 1995-05-08 Macchina e procedimento per la calibratura e la squadratura di lastre

Publications (2)

Publication Number Publication Date
EP0742076A1 EP0742076A1 (fr) 1996-11-13
EP0742076B1 true EP0742076B1 (fr) 1999-12-08

Family

ID=11385878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950830395 Expired - Lifetime EP0742076B1 (fr) 1995-05-08 1995-09-26 Une machine pour la mise à dimension et à l'équerre de blocs de matériaux tels que verre, pierre et marbre, carreau de céramique et similaires

Country Status (4)

Country Link
EP (1) EP0742076B1 (fr)
DE (1) DE69513804T2 (fr)
ES (1) ES2142466T3 (fr)
IT (1) IT1279803B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1034882A3 (fr) * 1999-03-11 2002-07-10 Karsten Kristiansen Dispositif pour le meulage des bords d'articles plats empilés verticalement, p.e. des plaques laminées
DE10045992C2 (de) * 2000-09-16 2002-11-28 Ralf Guenther Maschine zum Einschneiden von kreisförmigen Löchern in keramische Fliesen oder Feinsteinzeug
DE102009021716A1 (de) * 2009-05-18 2010-11-25 Bhs Tabletop Ag Vorrichtung zum automatisierten Schleifbearbeiten von Porzellan-Körpern im weißtrockenen Zustand
CN106736933B (zh) * 2016-12-08 2018-12-28 平湖瑞星金属工艺有限公司 一种便于金属制品换位的抛光机
CN109048576A (zh) * 2018-10-26 2018-12-21 张婷 一种具有方便收集竹条功能的竹条打磨装置
CN111590764A (zh) * 2020-06-23 2020-08-28 贵州隆筑宜装配式建材有限公司 一种加工蒸压加气混凝土板的干式开槽系统及控制方法
CN113245968B (zh) * 2021-06-15 2024-09-27 太原市恒山机电设备有限公司 大型方坯钢修磨机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE38548C (de) * J. DEJAIFFE in Mazy, Belgien Maschine zur Bearbeitung der Seitenflächen von Steinen und ähnlichen Materialien
DE646843C (de) * 1934-08-21 1937-06-23 Martial Chauvet Maschine zum Putzen, Schleifen oder Polieren der Kantenflaechen von kuenstlichen Steinen o. dgl.
DE924371C (de) * 1953-01-13 1955-02-28 Marienberger Mosaikplattenfabr Verfahren und Vorrichtung zum Schleifen von Wandfliesen od. dgl. auf Masshaltigkeit
DE1826154U (de) * 1960-12-02 1961-02-02 Erwin Spielvogel & Soehne Einsaeulen-steinbearbeitungsmaschine.

Also Published As

Publication number Publication date
ES2142466T3 (es) 2000-04-16
EP0742076A1 (fr) 1996-11-13
IT1279803B1 (it) 1997-12-18
DE69513804T2 (de) 2000-07-20
DE69513804D1 (de) 2000-01-13
ITMO950074A1 (it) 1996-11-08

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