EP0742076A1 - Une machine et un procédé 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 et un procédé 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
EP0742076A1
EP0742076A1 EP95830395A EP95830395A EP0742076A1 EP 0742076 A1 EP0742076 A1 EP 0742076A1 EP 95830395 A EP95830395 A EP 95830395A EP 95830395 A EP95830395 A EP 95830395A EP 0742076 A1 EP0742076 A1 EP 0742076A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
machine
bearing device
tile
axis
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.)
Granted
Application number
EP95830395A
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German (de)
English (en)
Other versions
EP0742076B1 (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
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Publication of EP0742076B1 publication Critical patent/EP0742076B1/fr
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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 and a process 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 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 embodiment 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 second 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 third 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 second and third preferred 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 embodiment of the invention includes a change in the location of the drive heads on which the tools are mounted and consequently, a change in the reciprocal location of the platform carrying the workpiece-bearing devices.
  • the drive heads are stationary with respect to the frame while the forward movement is transmitted to the platform or to each single workpiece-bearing device which in turn are set in motion along suitably arranged slideways.
  • 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.
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
IT95MO000074A IT1279803B1 (it) 1995-05-08 1995-05-08 Macchina e procedimento per la calibratura e la squadratura di lastre
ITMO950074 1995-05-08

Publications (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1034882A2 (fr) * 1999-03-11 2000-09-13 Karsten Kristiansen Dispositif pour le meulage des bords d'articles plats empilés verticalement, p.e. des plaques laminées
CN106736933A (zh) * 2016-12-08 2017-05-31 无锡市彩云机械设备有限公司 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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (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.

Patent Citations (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.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1034882A2 (fr) * 1999-03-11 2000-09-13 Karsten Kristiansen Dispositif pour le meulage des bords d'articles plats empilés verticalement, p.e. des plaques laminées
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
CN106736933A (zh) * 2016-12-08 2017-05-31 无锡市彩云机械设备有限公司 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

Also Published As

Publication number Publication date
EP0742076B1 (fr) 1999-12-08
DE69513804D1 (de) 2000-01-13
IT1279803B1 (it) 1997-12-18
DE69513804T2 (de) 2000-07-20
ES2142466T3 (es) 2000-04-16
ITMO950074A1 (it) 1996-11-08

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