EP2806998A1 - Procédé de meulage de plaques de verre - Google Patents

Procédé de meulage de plaques de verre

Info

Publication number
EP2806998A1
EP2806998A1 EP13710554.0A EP13710554A EP2806998A1 EP 2806998 A1 EP2806998 A1 EP 2806998A1 EP 13710554 A EP13710554 A EP 13710554A EP 2806998 A1 EP2806998 A1 EP 2806998A1
Authority
EP
European Patent Office
Prior art keywords
grinder
grinding
relative
sheet
forward 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.)
Withdrawn
Application number
EP13710554.0A
Other languages
German (de)
English (en)
Inventor
Mario Balbi
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.)
Bottero SpA
Original Assignee
Bottero SpA
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 Bottero SpA filed Critical Bottero SpA
Publication of EP2806998A1 publication Critical patent/EP2806998A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B24B9/08—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 of glass
    • B24B9/10—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 of glass of plate glass
    • B24B9/102—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 of glass of plate glass for travelling sheets

Definitions

  • the present invention relates to a method for grinding glass sheets.
  • the present invention is advantageously but non-exclusively applied in bilateral grinding machines, to which the following description will explicitly refer without loss of generality.
  • a sequence of sheets to be ground is advanced along a rectilinear grinding path between two assemblies of grinding groups facing each other and each adapted to grind a relative side of the sheet.
  • Each assembly comprises a plurality of grinding groups, which are side by side to each other in the advance direction of the sheets and have respective grinders geometrically different from each other for progressively processing the lateral edge of the sheet and each removing a predefined amount of material variable according to their position, so as to obtain lateral edges having desired profiles and finishing degree.
  • An example of such grinding machines is described in EP 1 422 024 Al .
  • Each grinding group comprises its own frame and a relative grinder holder spindle, which is motor- driven and coupled to the relative frame by a guide and saddle adjustment device manually operatable by an operator in charge of the machine. Such device allows, in use, the continuous adjustment of the grinder position in a direction orthogonal to the advance path of the sheets for recovering the wear of the relative grinder.
  • Each frame is then rotatably coupled to the machine structure around a horizontal axis parallel to the advance path of the sheets for allowing the grinder position between a sheet grinding operating position, in which the grinder is arranged candle- wise and therefore rotates around a vertical axis orthogonal to the sheet, and a rest position, in which the rotation axis of the grinder is horizontal and the same grinder is easily reachable and replaceable .
  • the grinders are replaced, the frame are returned to their operating positions and the grinders are manually adjusted with respect to their frames and to the glass sheet by adjusting the respective guide and saddle devices up to bringing them, each, to a predefined sheet grinding position.
  • the object of the present invention is to provide a method for grinding glass sheets which allows the above problem to be solved in a simple manner and in particular allows the machine downtime for grinder change to be drastically reduced.
  • a method for grinding a glass sheet is provided according to the present invention as claimed in claim 1.
  • said second grinder is displaced to said relative forward grinding position subsequent to detecting the need of replacing said first grinder.
  • said second grinder is brought to said forward grinding position at the same time as or subsequent to the displacement of said first grinder towards said relative backward grinder change/maintenance position.
  • figure 1 shows a perspective view of a bilateral grinding machine provided with a preferred embodiment of grinding groups for carrying out the method according to the teachings of the present invention
  • figures 2 and 3 show a partially plan view of the machine of figure 1 in two different functional conditions
  • FIGS. 4 and 5 show a diagrammatic, block view of some details of figures 1 to 3 in different functional positions.
  • reference numeral 1 indicates as a whole a machine for processing a glass sheet 2 and in particular, a bilateral machine for processing opposite lateral edges 2a, 2b of sheet 2 itself.
  • Machine 1 comprises its own fixed structure 3, a conveyor 4, per se known and not described in detail, for advancing sheet 2 in a longitudinal rectilinear direction 5 and, for each lateral edge 2a, 2b of sheet 2 itself, two grinding assemblies equal to each other and interchangeable and indicated with reference numerals 6, 7.
  • Assemblies 6 and 7 are independent of each other and arranged side by side in a direction parallel to direction 5 and are carried by respective lateral coupling portions 8 of structure 3.
  • each grinding assembly 6, 7 comprises two relative grinding groups 9 side by side to each other and independent of each other.
  • Each grinding group 9 comprises a relative movable supporting frame 10, a relative motor-driven spindle 13, per se known, on which a grinder 14 is keyed, which grinder is rotatable around its own axis 15 and a motor-driven guide and saddle device 16 interposed between frame 10 and the relative spindle 13.
  • Each guide and saddle device 16 comprises a guide 18 integrally connected to frame 10 and a saddle 19 coupled to the relative guide 18 for sliding in opposite directions along an axis 20 orthogonal to the rotation axis 15 of the relative grinder 14 under the control of a relative gearmotor comprising a motor 21 controlled by a command and control unit 22 of machine 1.
  • Each frame 10 is coupled to the relative coupling portion 8 by means of a relative hinge for rotating around the relative spindle 13 with respect to portion 8 and around a longitudinal hinge axis 23 parallel to direction 5 between an upturned grinder change/maintenance position (figures 1 and 3), in which the relative spindle 13 is arranged in upturned position, the rotation axis 15 of the relative grinder 14 horizontally arranged and lifted with respect to the relative coupling portion 8, and an operating position, in which the relative spindle 13 is arranged in plunging or candle-wise position (figure 2), axis 15 of the relative grinder extends vertically and orthogonally to sheet 2 to be processed and grinder 14 itself is arranged in a position facing the relative edge 2a, 2b of sheet 2.
  • a relative hinge for rotating around the relative spindle 13 with respect to portion 8 and around a longitudinal hinge axis 23 parallel to direction 5 between an upturned grinder change/maintenance position (figures 1 and 3), in which the relative spindle 13 is arranged in upturned position, the rotation
  • spindles 13, along with the relative grinders 14, are movable parallel to themselves, under the thrust of the relative devices 16 to and from a forward grinding position of sheet 2.
  • a sequence of sheets 2 is advanced in direction 5 and the edges of sheets 2 themselves are progressively processed by grinders 14 of assembly 6.
  • groups 9 of assembly 7 are subjected to maintenance and/or replacement of the relative grinders 14.
  • frames 10 of assembly 7 are upturned and the relative spindles 13 first brought to their plunging position and then advanced by the respective guide and saddle devices 16 towards sheet
  • the described grinding method compared to the known methods, allows the machine downtime and thereby the losses resulting from a production loss to be drastically reduced.
  • the above is essentially due to the fact that the two assemblies 6 and 7 are independent of each other and grinders 14 of the two assemblies are equal or identical and alternative to each other for carrying out the same process and removing an identical amount of material from the sheet. Therefore, the machine downtime is that strictly necessary for switching from one grinder assembly to the other.
  • the described machine 1 may comprise a different number of grinding assemblies 6, 7 and each assembly may be replaced, at most, by a single grinding group 9.
  • a first group 9 grinds the edge of sheet 2 while the second group is arranged in the standby position or in the grinder replacement/maintenance position.
  • the second group must be arranged in the standby position before the first group requires grinder replacement and/or maintenance, i.e. while processing sheets 2 with the first grinding group.
  • the grinding groups 9 may be different from what described by way of example and in particular, of the type in which the relative frame guide and saddle device is interposed between the relative frame and the machine base.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne une plaque de verre (2) avancée dans une direction longitudinale (15), meulée par déplacement d'un premier (14) et un second ébaucheur (14) égaux l'un à l'autre dans des directions respectives, transversales à la direction longitudinale, entre des positions de changement/entretien d'ébaucheur arrière respectives et des positions de meulage avant respectives de ladite plaque (2), par meulage de la plaque (2) en maintenant le premier ébaucheur dans sa position de meulage avant et en amenant le second ébaucheur dans une position d'attente, agencée entre les positions de meulage avant et arrière relatives et près de la position de meulage avant relative, tout en meulant la plaque (2) au moyen du premier ébaucheur (14).
EP13710554.0A 2012-01-23 2013-01-23 Procédé de meulage de plaques de verre Withdrawn EP2806998A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000050A ITTO20120050A1 (it) 2012-01-23 2012-01-23 Metodo per la molatura di lastre di vetro
PCT/IB2013/050582 WO2013111069A1 (fr) 2012-01-23 2013-01-23 Procédé de meulage de plaques de verre

Publications (1)

Publication Number Publication Date
EP2806998A1 true EP2806998A1 (fr) 2014-12-03

Family

ID=46001408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13710554.0A Withdrawn EP2806998A1 (fr) 2012-01-23 2013-01-23 Procédé de meulage de plaques de verre

Country Status (3)

Country Link
EP (1) EP2806998A1 (fr)
IT (1) ITTO20120050A1 (fr)
WO (1) WO2013111069A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112171426A (zh) * 2020-10-30 2021-01-05 重庆重玻节能玻璃有限公司 自动化四边磨边机
CN113070767B (zh) * 2021-04-07 2022-03-22 杭州临安荣升机械有限公司 一种金属板材打磨装置
CN114871900B (zh) * 2022-05-16 2023-05-30 四川熙隆半导体科技有限公司 一种半导体器件塑封壳体打磨装置及打磨方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20021010A1 (it) * 2002-11-20 2004-05-21 Biesse Spa Metodo per il controllo della posizione operativa di una mola utilizzata su di una macchina per la lavorazione di bordi di lastre di vetro, marmo e simili materiali lapidei, e macchina per l'implementazione di tale metodo
DE10255171A1 (de) * 2002-11-27 2004-06-24 Torgauer Maschinenbau Gmbh Maschine zum Schleifen der Kanten von hochkant stehendem Flachglas
ITTO20030297A1 (it) * 2003-04-16 2004-10-17 Forvet Srl Testa di molatura per una macchina di molatura di
IT1398656B1 (it) * 2010-03-08 2013-03-08 Tecnema Societa A Responsabilita Limitata Macchina per la rettifica di elementi lastriformi, particolarmente piastrelle e lastre in materiale ceramico, pietre naturali, vetro o simili

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013111069A1 *

Also Published As

Publication number Publication date
WO2013111069A1 (fr) 2013-08-01
ITTO20120050A1 (it) 2013-07-24

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