EP1177070B1 - Systeme de lissage et de polissage automatique de plaques et de blocs generalement en marbre, en granit, ou en pierre - Google Patents

Systeme de lissage et de polissage automatique de plaques et de blocs generalement en marbre, en granit, ou en pierre Download PDF

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Publication number
EP1177070B1
EP1177070B1 EP00911260A EP00911260A EP1177070B1 EP 1177070 B1 EP1177070 B1 EP 1177070B1 EP 00911260 A EP00911260 A EP 00911260A EP 00911260 A EP00911260 A EP 00911260A EP 1177070 B1 EP1177070 B1 EP 1177070B1
Authority
EP
European Patent Office
Prior art keywords
plates
tool
heads
granite
marble
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
EP00911260A
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German (de)
English (en)
Other versions
EP1177070A1 (fr
Inventor
Romolo Galimberti
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.)
Galimberti Romolo SpA
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Galimberti Romolo SpA
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Filing date
Publication date
Application filed by Galimberti Romolo SpA filed Critical Galimberti Romolo SpA
Publication of EP1177070A1 publication Critical patent/EP1177070A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • B24B7/224—Portal grinding machines; Machines having a tool movable in a plane
    • 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
    • B24B7/06—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving conveyor belts, a sequence of travelling work-tables or the like

Definitions

  • the present invention refers to an automatic smoothing and polishing system for plates and blocks made of marble, granite and stone in general, that operates for the optimisation of the overall sizes and the increase of production and quality requirements.
  • the stony material extracted from the quarry in the shape of a block is transformed in big-sized plates, long and narrow plates, blocks whose sizes and shape are rather variable and with a surface roughness that is as high as the impact effect is high with respect to the abrasion, both embedded into the particular cutting process.
  • the automatic smoothing and polishing system arranged to work the surface of the above semi-finished product is particularly sophisticated, being provided with a control logic for major cycle variables - tool speed, different approach motions between material to be worked and tool, particular semi-finished product geometry, etc.
  • each tool-holder head is characterised by a motion along the vertical approach direction towards the plate, adapted to avoid dangerous tool interactions with the etching edge of the semi-finished product to be abraded, that due to its nature is not prone to impacts.
  • a system of this type fully guarantees smoothing and polishing of dishomogeneous stony material with variable geometry; it also has the following inconveniences, whose solution is the object of the present invention:
  • Tool-holder heads belonging to contiguous rows and arranged at the same height with respect to the plate advancement direction are provided with an abrasive tool having the same grain; moreover these heads are made mutually integral by means of a carriage possessing an independent oscillating motion with respect to the support carriage motion of the tool-holder heads with different grain.
  • the surface portion interacting with a row of tool-holder heads is worked by means of the carriage oscillating motion, this motion being transverse to the advancement motion of the plates to be abraded and with a width equal to the global width ratio of the conveyor belt and the number of these rows of tool-holder heads; moreover, the heads belonging to a single carriage and arranged at the same height with respect to the plate advancement direction are arranged at prefixed relative distances: this in order to guarantee the necessary "covering" next to the area shared by heads of contiguous rows.
  • the system shown in Figure 1 is composed of a fixed carrier structure 1, a conveyor belt 2 along which plates or blocks are laid in succession and are subjected to a smooth advancement motion through the actuator 3 and the belt winding cylinders 4.
  • the carrier structure 1 includes the seats for sliding guides 5 of carriages 6 provided with transverse motion by means of the respective actuators 7 not shown in the drawings.
  • the tool-holder heads 8 integral with each carriage 6 are provided with tools having the same grain next to the respective surface portion to be abraded, this latter one being increased by a "covering" factor, computed from the surface portion interacting with the contiguous heads.
  • a traditional system composed of 18 heads assembled on a single bridge finds its corresponding system, according to the present invention, in a system with two similar rows of heads arranged on 9 oscillating carriages with an oscillation frequency that is equal to twice the optimum frequency with respect to a traditional system, guaranteeing an unchanged production.
  • system is adapted to be conceived as a set of modules, each one implying a carriage oscillating along guides that are integral with an independent casing.
  • the system is capable of a high flexibility both in the choice of the type of heads - thickness calibration rather than constant pressure calibration - and in the definition of relative motions among the heads belonging to a single carriage.
  • the carrier structure is in this example a monolithic electro-welded structure subjected to stress relieving; the carriage actuator is of the brushless type; the carriage is connected to the carrier structure by means of sliding guides that are sized and chosen as function of the real load conditions that are imposed upon the carriage whether the operation is smoothing or polishing; in fact, the system object of the present invention allows discriminating design variables by optimising the design of the single smoothing carriage - characterised by the presence of high shear forces with low cohesion between plate and tool - rather than the smoothing carriage - high cohesion between abrasive surface and plate, susceptibility to impacts, etc.
  • the choice of the sliding guides depends on pre-load and accuracy, in addition to the nature of the load that can be more or less concentrated and subjected to quick displacements and sudden variations: these are elements that can be kept in due consideration depending on the requirements for each carriage. Adjustment screws are further present to adjust the coupling; these are guides that are able to solve some of the problems of roller guides, like irregular rolling at high speeds, leeway making, and the phenomenon of load concentration. Another characteristic aspect of these guides is the capability of absorbing support structure errors without the need of interposing elastic parts.

Landscapes

  • 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)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (5)

  1. Installation automatique de dressage et polissage de plaques et blocs, généralement de grandes dimensions, de marbre, granit et pierre en tout genre, cette installation comprenant des moyens pour effectuer la translation de plaques ou blocs disposés le long d'un tapis transporteur et pour effectuer le mouvement des outils par effet de la rotation du mandrin principal de chaque tête, dans laquelle au moins deux groupes identiques de têtes porte outils (8) interagissent avec des surfaces à abraser respectives et avec une portion de surface partagée par les groupes respectifs de têtes contiguës selon un facteur de "recouvrement ", dans lesquelles les têtes porte-outils (8), disposée à la même hauteur par rapport à la direction d'avancement de la plaque et en correspondance avec la portion de surface respective à abraser, sont dotées d'outils ayant le même grain, ces têtes porte-outils (8) ayant le même grain d'abrasif étant rendues réciproquement solidaires au moyen d'un chariot (6) indépendant,
    caractérisé par le fait que :
    Chaque chariot (6) est doté de mouvement oscillatoire ayant direction transversale au mouvement d'avancement des plaques à abraser et ayant une ampleur identique par rapport à la largeur globale du tapis transporteur pour le nombre de ces groupes de têtes porte-outils (8).
  2. Installation automatique de dressage et polissage de plaques et blocs de marbre, granit et pierre en tout genre selon la Revendication 1, caractérisé par le fait que:
    La structure portante (1) reporte les logements des coulisseaux (5) des chariots (6) dotés de mouvement transversal au moyen des actionneurs respectifs(7).
  3. Installation automatique de dressage et polissage de plaques et blocs de marbre, granit et pierre en tout genre selon la Revendication 2, caractérisé par le fait que:
    Les coulisseaux (5) sont alignés au moyen de vis de réglage pour régler l'accouplement.
  4. Installation automatique de dressage et polissage de plaques et blocs de marbre, granit et pierre en tout genre selon la Revendication 1, caractérisé par le fait que:
    Les têtes porte-outils (8) appartenant à un seul chariot (6) sont réciproquement indépendantes.
  5. Installation automatique de dressage et polissage de plaques et blocs de marbre, granit et pierre en tout genre selon la Revendication 4, caractérisé par le fait que:
    Les têtes porte-outils (8) appartenant à un groupe sont désactivées par le contrôle de l'installation.
EP00911260A 1999-03-18 2000-03-14 Systeme de lissage et de polissage automatique de plaques et de blocs generalement en marbre, en granit, ou en pierre Expired - Lifetime EP1177070B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITBG990017 1999-03-18
IT1999BG000017A IT1309478B1 (it) 1999-03-18 1999-03-18 Impianto automatico di levigatura e lucidatura di lastre e masselli di marmo, granito e pietra in genere, dotato di teste portautensili
PCT/IT2000/000082 WO2000054932A1 (fr) 1999-03-18 2000-03-14 Systeme de lissage et de polissage automatique de plaques et de blocs generalement en marbre, en granit, ou en pierre

Publications (2)

Publication Number Publication Date
EP1177070A1 EP1177070A1 (fr) 2002-02-06
EP1177070B1 true EP1177070B1 (fr) 2002-11-06

Family

ID=11336687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00911260A Expired - Lifetime EP1177070B1 (fr) 1999-03-18 2000-03-14 Systeme de lissage et de polissage automatique de plaques et de blocs generalement en marbre, en granit, ou en pierre

Country Status (6)

Country Link
EP (1) EP1177070B1 (fr)
AT (1) ATE227191T1 (fr)
AU (1) AU3324200A (fr)
DE (1) DE60000738T2 (fr)
IT (1) IT1309478B1 (fr)
WO (1) WO2000054932A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1315616B1 (it) 2000-03-15 2003-03-14 Luigi Pedrini Levigatrice per materiali lapidei, dotata di teste multiple allineatesu due travi oscillanti e parallele, nonche' con distanza regolabile.
CN102320024B (zh) * 2011-09-23 2013-09-11 陈勇 磨光装置
CN104625909B (zh) * 2015-02-02 2018-04-27 朱维俊 一种石英石板材抛光机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8522441D0 (en) * 1985-09-10 1985-10-16 Lindsey A F Flat glass
FR2619039B3 (fr) * 1987-08-05 1989-09-22 Thibaut Sa Installation pour le polissage a plat d'une serie de pierres
IT1255336B (it) * 1992-07-10 1995-10-31 Luigi Pedrini Struttura di fresa a ponte e piattaforma particolarmente per lavorazione di materiali lapidei e simili.
IT1292686B1 (it) * 1997-03-11 1999-02-11 Pragma S R L Metodo per la calibratura di elementi in pietra naturale o artificiale particolarmente piastrelle ceramiche, e macchina relativa.

Also Published As

Publication number Publication date
WO2000054932A1 (fr) 2000-09-21
DE60000738D1 (de) 2002-12-12
ITBG990017A1 (it) 2000-09-18
ATE227191T1 (de) 2002-11-15
EP1177070A1 (fr) 2002-02-06
AU3324200A (en) 2000-10-04
IT1309478B1 (it) 2002-01-23
DE60000738T2 (de) 2003-07-31

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