EP0839608B1 - A polishing and smoothing machine for slabs, tiles and the like. - Google Patents

A polishing and smoothing machine for slabs, tiles and the like. Download PDF

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Publication number
EP0839608B1
EP0839608B1 EP97830510A EP97830510A EP0839608B1 EP 0839608 B1 EP0839608 B1 EP 0839608B1 EP 97830510 A EP97830510 A EP 97830510A EP 97830510 A EP97830510 A EP 97830510A EP 0839608 B1 EP0839608 B1 EP 0839608B1
Authority
EP
European Patent Office
Prior art keywords
platform
rotation axis
frontal
machine
rotating
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
EP97830510A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0839608A1 (en
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Onix SRL filed Critical Onix SRL
Publication of EP0839608A1 publication Critical patent/EP0839608A1/en
Application granted granted Critical
Publication of EP0839608B1 publication Critical patent/EP0839608B1/en
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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • 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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • 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
    • 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

Definitions

  • the invention relates to a polishing-smoothing machine for slabs, tiles and the like.
  • the invention is applicable in the smoothing of marble slabs and ceramic tiles made of the material known as porcelain stoneware.
  • WO-A-95/30515 discloses the nearest prior art and particularly describes a polishing-smoothing machine for slabs, tiles and the like, comprising
  • the prior art teaches polishing marble slabs and porcelain stoneware tiles using sanding machines having a plurality of grinders arranged in line which operate on the slab or tile first by smoothing the work-surface and then, with a series of passages under progressively-finer grinders, by progressively polishing same.
  • a characteristic of this working technique is the removal of a considerable breadth of material from the face of the slab or tile, i.e. a breadth which is sufficient to produce a perfectly flat surface which is necessary in order to obtain a fine shine.
  • this type of sanding has the drawback of opening up microporosities (which are not present in the piece as it exits from the kiln) which causes the polished surface to stain when in contact with dirt particles small enough to lodge in these porosities. Consequently it is usually necessary to apply a further proofing process, whereby the tiles are treated with a substance able to impregnate the microporosities and render them safe from dirt infiltration.
  • a further serious limitation of the prior art relating to sanding is that it is not at all able to produce a smooth finish or polish on irregular, i.e. not perfectly flat surfaces.
  • This in effect means that the kinds of tile known as structured, which are designed to have irregular rough surfaces (the prior art, indeed, presupposes that all surface irregularities have to be levelled before polishing can take place) cannot be polished.
  • the present invention provides a polishing and smoothing machine able to carry out a surface treatment which makes the tile or slab surface shinier and smoother without detracting from the original geometric conformation thereof.
  • a further aim of the present invention is to perform a smoothing operation which is characterised by the removal of a very small breadth of material.
  • a still further aim of the present invention is to realise various degrees of finish without leaving any sign of working whatsoever on the worked surface.
  • An advantage of the present invention consists in its constructional, functional and operative simplicity.
  • a further advantage of the present invention is its ability to work with consistent results on products having flat and regular surfaces but also on those having irregular surfaces and conformations.
  • a still further advantage of the present invention consists in the fact that it can be used for obtaining special products, such as antiquated marbles.
  • a yet further advantage is that the operation of the invention is very economical.
  • the frontal rotating brushes 4 are mounted idle on the platform 3, that is, with full rotating liberty about respective axes thereof, which axes are inclined at a predetermined angle with respect to a perpendicular of the plane 1.
  • the rotation axis of each brush 4 is contained within a plane which also contains the rotation axis x-x of the platform 3.
  • the angle at which the rotation axis of each brush 4 is inclined with respect to the perpendicular of the plane 1 is small - preferably about 1 sexagesimal degree.
  • the rotation axes of the brushes 4 are arranged in such a way that the active frontal surfaces of the brushes are turned towards the rotation axis x-x of the platform.
  • Each brush 4 is constituted by a disc 40.
  • Bristles 41 are arranged in a circular crown on the downwards-turned face of the disc 40, which bristles can be made of any of various materials.
  • they are made of a composite, the preference being for a plastic material functioning as a bond comprising abrasive particles of a predetermined granulometry.
  • the brushes 4 contact the upper surface of the slab or tile 2 with a predetermined pressure obtained with said known device (not illustrated) having the task of keeping the whole motor head 6 pressed downwards (i.e. against the surface of the slab or tile 2) at a predetermined and adjustable pressure.
  • Each brush 4 comes into contact with the upper surface of the slab or tile 2 only at one zone of the brush 4 frontal surface, due to the fact that the brush 4 rotation axis is slightly inclined with respect to the perpendicular of the upper surface of the slab or tile 2.
  • This geometric situation combining with the rotation about its own axis x-x of the platform 3, generates a tangential force on the brush, causing it to rotate.
  • the brushes 4 are in contact with the slab or tile 2 they are automatically drawn into rotation about their respective axes.
  • the original profile of the workpiece surface is not changed (in this case, the workpiece surface being the whole upper surface of the slab or tile 2); the operation is limited to smoothing the surface.
  • the device is particularly useful in smoothing-polishing operations on irregular and not perfectly flat surfaces, such as those of tiles made of porcelain stoneware, known as "structured" .
  • a further fundamental characteristic of the invention is that it polishes and smooths without leaving any marks, such as scoring, on the workpiece surface, independently of the degree of finishing required. This degree of finishing essentially depends on the granulometry of the abrasive contained in the bristles forming the single brushes.
  • the work surfaces are passed through a series of machine operations, rather like the one described above.
  • the machines are arranged in line, and each is equipped with brushes 4 having bristles 41 impregnated with abrasives of varying granulometry.
  • the work order is organised so that a gradually decreasing abrasive granulometry (as well as different kinds of abrasives) comes into contact with the work surface.
  • a further embodiment of the invention uses a platform 3' arranged with its rotation axis x'-x' inclined with respect to the vertical of the plane 1'.
  • the inclination is of small entity, preferably about 1 degree.
  • the platform 3' bears a plurality of brushes 4', structurally identical to the brushes 4 of the first embodiment, but having rotation axes parallel to the rotation axis x'-x' of the platform 3'. Thus the axes thereof are also inclined with respect to the perpendicular of the plane 1'.
  • This geometrical situation is the cause of the rotation of the brushes 4', which are in contact with the underlying slab or tile 2, due to the effect of the rotation of the platform 3'.
  • the overall result is similar to that obtained in the first embodiment.

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)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP97830510A 1996-11-04 1997-10-10 A polishing and smoothing machine for slabs, tiles and the like. Expired - Lifetime EP0839608B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MO000144A IT1287499B1 (it) 1996-11-04 1996-11-04 Macchina lucidatrice-lisciatrice di lastre, piastrelle e simili
ITMO960144 1996-11-04

Publications (2)

Publication Number Publication Date
EP0839608A1 EP0839608A1 (en) 1998-05-06
EP0839608B1 true EP0839608B1 (en) 2001-05-23

Family

ID=11386173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830510A Expired - Lifetime EP0839608B1 (en) 1996-11-04 1997-10-10 A polishing and smoothing machine for slabs, tiles and the like.

Country Status (5)

Country Link
EP (1) EP0839608B1 (es)
DE (1) DE69704918T2 (es)
ES (1) ES2157057T3 (es)
IT (1) IT1287499B1 (es)
PT (1) PT839608E (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6986703B2 (en) 2002-09-25 2006-01-17 Georg Weber Apparatus for processing substantially planar workpieces

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1305459B1 (it) * 1998-02-24 2001-05-09 Onix Srl Macchina levigatrice-lucidatrice di lastre, piastrelle e simili
DE10035637A1 (de) * 2000-07-21 2002-02-07 Richard Scheuerlein Verfahren und Vorrichtung zum Behandeln einer Oberfläche von Betonbauteilen
DE10125448A1 (de) * 2001-05-25 2002-12-05 Paul Wasmer Schleifmaschine zum Bearbeiten von Werkstücken aus Beton, Kunststein oder Naturstein
WO2008064637A1 (de) * 2006-12-01 2008-06-05 Fleissner Gmbh Verfahren und vorrichtung zur herstellung einer bahnware mit einer flauschigen oberseite sowie entsprechend hergestellte bahnware
ITVI20110025A1 (it) * 2011-02-11 2012-08-12 Alba Paolo Testa porta mole da montare su macchine levigatrici di materiali lapidei, quali marmo, granito e simili
CN108284377B (zh) * 2017-01-09 2023-12-19 广东科达洁能股份有限公司 一种瓷砖复合运动轨迹抛光方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319434A (en) * 1980-05-08 1982-03-16 R/B Manufacturing, Inc. Surface processing machine
FR2584011B1 (fr) * 1985-06-28 1989-02-24 Renault Tete de brossage, notamment pour centres d'usinage
IT1215384B (it) * 1987-03-13 1990-02-08 Pola E Massa S N C Di Pola C E Dispositivo per il trattamento dipiastre per circuiti stampati, in particolare per pulitura a pomice e sbavatura.
DE8806552U1 (de) * 1988-05-19 1988-08-11 KADIA Maschinenbau Kopp GmbH & Co, 7440 Nürtingen Maschine zum Entgraten von Werkstücken
EP0758287A1 (en) * 1994-05-06 1997-02-19 Sirt Societa' Industriale Ricerca Tecnologica S.R.L. A machine for smoothing/polishing flat slabs, in particular of ceramic material, natural stone, or other equivalent materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6986703B2 (en) 2002-09-25 2006-01-17 Georg Weber Apparatus for processing substantially planar workpieces

Also Published As

Publication number Publication date
DE69704918D1 (de) 2001-06-28
ES2157057T3 (es) 2001-08-01
ITMO960144A0 (it) 1996-11-04
DE69704918T2 (de) 2001-11-15
PT839608E (pt) 2001-09-28
ITMO960144A1 (it) 1998-05-04
EP0839608A1 (en) 1998-05-06
IT1287499B1 (it) 1998-08-06

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