EP3581331A1 - Ensemble de disques de meulage des bords de plaques de verre - Google Patents

Ensemble de disques de meulage des bords de plaques de verre Download PDF

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Publication number
EP3581331A1
EP3581331A1 EP18460034.4A EP18460034A EP3581331A1 EP 3581331 A1 EP3581331 A1 EP 3581331A1 EP 18460034 A EP18460034 A EP 18460034A EP 3581331 A1 EP3581331 A1 EP 3581331A1
Authority
EP
European Patent Office
Prior art keywords
discs
glass plate
pair
edges
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.)
Granted
Application number
EP18460034.4A
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German (de)
English (en)
Other versions
EP3581331B1 (fr
Inventor
Adam Zakrzewski
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.)
W M Glass Sp Z OO
Original Assignee
Phup Remszklo SC
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 Phup Remszklo SC filed Critical Phup Remszklo SC
Priority to EP18460034.4A priority Critical patent/EP3581331B1/fr
Publication of EP3581331A1 publication Critical patent/EP3581331A1/fr
Application granted granted Critical
Publication of EP3581331B1 publication Critical patent/EP3581331B1/fr
Active legal-status Critical Current
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
    • 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 invention relates to a set of discs for grinding the edges of glass plates used in the construction industry, in the furnishing of flats and in the furniture industry.
  • the solution known from patent description EP 0547995 presents a machine for grinding and bevelling any type of ceramic material, stone, granite, marbles and the like, comprising a tie-up system of the material between two belts, the workpiece access and continuous advance being allowed without relative movement of the workpieces during their transport.
  • the grinding system comprises several grinders with mutually opposed bevelling and in this way the grinders concurrently operate and control parallel grinding.
  • a grinding machine for glass slabs containing a grinding head comprises a supporting structure, round grinding discs for grinding and laterally polishing the slabs and grinding discs for grinding and/or polishing the edges of the slabs.
  • the grinding discs for grinding or polishing contain rotation mechanisms, independently one from another, around an axis that is perpendicular to the rotation axis of the grinding discs.
  • the grinding discs for grinding or laterally polishing are adapted to perform, when working, axial movements, that can be actuated independently one from another, along the slabs.
  • the machine comprises a base frame, forward movement means for a plate-shaped element having at least a first side to be ground and at least a second side transversal to the first side.
  • the machine comprises the movement means being fitted on the base frame, being suitable for moving the plate-shaped element along a direction of forward movement and comprises two pairs of flexible elements, of which a first pair is fitted on a first support structure and a second pair is fitted on a second support structure.
  • Grinding discs for the first side which are arranged in proximity of the movement surface and are suitable for cooperation with the edges of the glass plate-shaped element in its movement along the direction of forward movement.
  • the machining means comprise at least one side grinding disc and a chamfering disc.
  • the machine comprises positioning means of a rectangular-shaped plate on the movement surface, with a first pusher and a second pusher moving alternately along the direction of forward movement.
  • a bilateral machine for machining the edges of plates made of glass or stone comprises at least one device for forming a radiused circular profile at one or more corners of the glass plate.
  • Two devices are preferably provided on the two banks of the bilateral machine, outside of tool units in the form of round grinding discs for machining the side edges of the glass plate.
  • the devices are configured and controlled for performing the smoothing operation of one or more corners of the plate while the plate advances through the work area of the machine.
  • the wafer chamfering device comprises a plurality of grindstones which have different processing characteristics corresponding to a plurality of processing steps for chamfering the peripheries of the wafers, and moving means for moving the grindstones among the processing tables.
  • Each of the grindstones approaches one of the processing tables and chamfers one of the wafers, and then moves to another of the processing tables. These operations are repeated, with the result that the plurality of grindstones chamfer the plurality of wafers in parallel.
  • the device is provided with a surface plate that holds the board-shaped object and a disc-shaped or cylindrical bevelling grindstone that grinds and bevels the edges of the board-shaped object held on the surface plate.
  • the device also comprises a rotation means for rotating the bevelling grindstone, as well as a movement means for bringing the circumference of the bevelling grindstone into contact with the grinding surface on the peripheral surface of the board-shaped object and moving the bevelling grindstone along the object or the board-shaped object along the grindstone.
  • the device may be additionally provided with a spraying means for spraying a cooling liquid on the point of contact between the surface of the bevelling grindstone and the ground edge of the board-shaped object.
  • the spraying means sprays the cooling liquid in a direction to the rotation axis of the bevelling grindstone.
  • WO 2013/072845 presents a machine for working edges of slabs comprising a frame and feeding members for moving a glass slab having an edge to be worked.
  • the machine comprises at least one station for shaping the edges comprising at least one shaping member provided with a shaping tool.
  • the shaping station comprises at least one member for detecting the position of the edge of the slab, operatively placed upstream of the shaping member.
  • the machine also comprises a control unit designed to receive signal from the sensor and to send a command signal to the shaping member for determining the position of the shaping tool.
  • a glass plate working device which is provided with a holding base which holds a glass plate and a rail on which the holding base with the plate is moved along a conveyance path.
  • the device comprises cutting devices which, on the conveyance path, cut the glass plate into a rectangular shape having a predetermined size.
  • the glass plate is held on the holding base.
  • the conveyance path contains devices which chamfer the edges of the glass plate.
  • Working is started after the plate is cut to size by the cutting devices and the position of the chamfering devices is positioned relative to the holding base.
  • the machine comprises a supporting frame which has a conveyor for glass plates. There are also provided an abutment shoulder and a movable shoulder for supporting abrasive grinding discs which act on the opposite edges of the plates. Therefore, the grinding discs are fixed in pairs and at the same time grind the opposite edges of the plate.
  • the machine comprises, for each shoulder, downstream of the last grinding disc in the direction of advancement of the plates, a sensor for detecting the dimensions of the plates being machined which drives an advancement device for the advancement of the last grinding disc.
  • Each grinding disc except for the first grinding disc along the advancement direction of the plates is provided with a detector for detecting the energy absorbed by the corresponding motor.
  • a conveyor for quadrilateral glass plates supports their top and bottom surfaces.
  • Limit switches are provided at corresponding positions at both sides of the conveyor. Corner cutting horizontal rotary grinders mounted on grinder tables are provided between the limit switches are detect the presence of the plate to be ground. Timers are operated in response to a glass-plate arrival and departure detection signals from the area between limit switches. The grinder tables are moved toward or away from each other.
  • a control unit controls the speed of the movement of the grinder tables by step motors.
  • the object of the invention is to develop a new set of discs for grinding the edges of glass plates, arranged in a new way, to reduce the phenomenon described above and to slow down the wear of individual discs in the set.
  • the rapid degradation of discs is, in particular, caused by the process of rough removal of the upper and lower edges of a glass plate using cup discs and the profiling process using profile discs.
  • the process of removing excess glass after the cutting operation includes a roughing operation on peripheral oscillating discs and then a finishing operation on profile discs.
  • the two operations, according to the invention are separated by pre-profiling on cup discs by removing excess material at a specific angle, i.e. the operation of the initial shaping of the profile before peripheral profile discs.
  • the introduction of this intermediate operation has made it possible to relieve peripheral profile discs, but has also relieved peripheral polishing discs and has enabled very fast grinding, while maintaining the quality and the full automation of the process of changing the size of the machined forms.
  • the solution according to the invention has slowed down the wear of all the grinding discs in the set.
  • a set of discs for grinding the edges of glass plates is in the form of two rows of round grinding discs, where in a set of diamond discs individual discs are provided in pairs. From each pair of the discs, each of the two discs cooperates with the opposite one of the two parallel edges of the glass plate.
  • a pair of discs simultaneously handles two opposite edges of the glass plate being ground, carried on a known belt conveyor between said discs.
  • the discs grinding the surfaces of the side edges of the glass plate comprise segment peripheral oscillating discs, while the discs chamfering the side edges of these opposite surfaces perpendicular to the surface of the glass plate comprise cup discs.
  • the set of discs comprises in the order in which the glass plate is inserted into the set of discs:
  • peripheral profile discs may preferably comprise slotted discs.
  • a new set of discs for grinding the edges of a glass plate has been developed, where consecutive pairs of discs have been arranged in a new way to reduce and slow down the wear of individual discs in the set.
  • the process of rough removal of the upper and lower edge of the glass plate using cup discs and the profiling process using profile discs led to the rapid degradation of discs, where only parts of the disc are used, while the remaining disc material is still an abrasive material.
  • the process of removing excess glass after the cutting operation includes a roughing operation on oscillating discs and the roughing process followed by the finishing process on profile discs.
  • the expressions 'the edge of a glass plate' and 'the side of a glass plate' are used. These expressions should be understood to mean that the raw material for glass plates is a flat glass sheet of a certain thickness. After cutting out a plate of specific dimensions from a glass sheet, the plate has edges, i.e. sides with a certain thickness. These sides of the glass plate also comprise parts of the surface perpendicular to the main surface of the glass plate. These surfaces of the sides of the glass plate have their sharp edges in contact with the main surface of said plate.
  • the solution according to the invention relates to a set of discs for grinding and polishing said sides of the glass plate, together with the chamfering or rounding of the sharp edges described above.
  • a set of discs for grinding the edges of a glass plate in the first example is shown in Fig. 1 and Fig. 2 .
  • the set is in the form of two rows of round discs in the form of grinding discs 1,2.1.,2.2.,3.1.,3.2.,4.1.,4.2 .
  • individual discs are provided in pairs.
  • the object of the set of discs according to the invention is to work the side edge 5.1.,5.2 of the glass plate 5.
  • both discs from each pair have the same designation because they have the same technical characteristics and the same arrangement with respect to the edge of the glass plate 5. Only in each pair of discs from the pairs 2.1.,2.2.,2.3.,2.4 both discs are their own mirror image. In each pair of discs, each of the two discs cooperates with the opposite one of the two parallel edges 5.1.,5.2 of the glass plate 5. This means that two opposite discs from each pair of the discs simultaneously handle the two opposite, parallel edges 5.1.,5.2 of the glass plate 5 being ground. This is shown in Fig. 1 and Fig. 7 .
  • the glass plate 5 is carried in this example on a known belt conveyor, not shown in Fig. 1 and Fig. 3 , between said pairs of discs, in the direction indicated by the arrow in the figures.
  • the discs 1 grinding the surfaces of the side edges 5.1.,5.2 of the glass plate 5 comprise rough segment peripheral oscillating discs. Their purpose is to remove the excess material resulting from glass cutting, in relation to the assumed total excess, specified for the technological process or for a given thickness of glass. As a result of cutting out the plate 5 from a larger sheet, the excess remains over the excess assumed for the further working of the edges 5.1.,5.2.
  • the working surface of said discs 1 cooperates with the surface of the side edge of the glass plate 5 at an angle of 0°. This is shown in Fig. 3 and Fig. 9 .
  • Pairs of the cup discs 2.1 and 2.2 are tools for chamfering the side edges 5.1 and 5.2 of the glass plate 5 and they are shown in Fig. 1 and Fig. 2 . These discs are diamond cup discs.
  • the purpose of the pairs of the discs 2.1.,2.2 is the pre-profiling of the edges of the sides 5.1.,5.2 of the glass plate and the removal of the excess material at a specific angle. This type of operation is called in the engineering as chamfering.
  • the discs are inclined at an angle of 45° with respect to the surface of the glass plate 5. Figs.
  • each pair of the discs 2.1.,2.2.,2.3,2.4 two discs with the same degree of inclination are provided, but inclined in opposite directions to each other.
  • One pair of the discs 2.1 is intended for working both bottom edges of the side of the glass plate 5, while the other pair of the discs 2.2 is intended for working the upper edges of the side of the glass plate 5.
  • the discs in said pairs of the discs are mounted in a known manner, each disc on the axis of a known drive motor, which is not shown in the attached drawings.
  • the motors are mounted in a known manner, slidably on both sides of said known glass plate conveyor, and in this way the spacing of the discs mounted on the drive shafts of the motors, in each pair of the discs, is adjusted, according to the width of the glass plate being worked.
  • the set of discs contains two additional pairs of the discs 3.1 and 3.2, which are diamond peripheral profile discs.
  • the pair of the discs 3.1 is a pair of rough profile discs with an angle of cooperation of 0° with the side surface of the edges 5.1,5.2 of the plate 5.
  • the working surface of this pair of the rough discs 3.1 is perpendicular to the surface of the glass plate 5, and is therefore parallel to the side of the glass plate 5.
  • the purpose of the pair of the rough discs 3.1 is to give the correct initial profile to the side of the plate 5 by removing the excess material. After this working, the side of the plate takes the correct profile, but it is still very rough.
  • the pair of subsequent discs 3.2 are also diamond peripheral profile discs for finishing.
  • the purpose of this pair of the discs 3.2 is to finally give the correct profile to the edges by further removing the assumed excess material, and after this working the sides 5.1,5.2 of the glass plate 5 are characterised by low roughness.
  • the set of discs has been supplemented with two more pairs of discs designated as 4.1,4.2.
  • These are pairs of peripheral polishing discs.
  • One pair 4.1 of the discs is a pair of rough discs 4.1 with an angle of cooperation of 0° with the side 5.1,5.2 of the glass plate 5.
  • the axes of rotation of the discs 4.1,4.2 lie in the planes perpendicular to the side surface of the glass plate 5, therefore they are parallel to the sides 5.1,5.2 of the glass plate 5.
  • the second pair is a pair of finishing peripheral polishing discs 4.2 with an angle of cooperation of 0° with the sides 5.1,5.2 of the plate 5. It is a pair of finishing discs whose purpose is to polish the side of the glass plate.
  • Fig. 3 and Fig. 4 The second example of the set for grinding the edges of glass plates is illustrated in Fig. 3 and Fig. 4 .
  • all of the components of example I were used, with the difference that to two pairs of the diamond cup discs 2.1,2.2 two further pairs of such discs 2.3,2.4 were added.
  • slotted discs 3.3,3.4 were proposed. With this solution, after the periodical wear of one slot in the currently used pair of the discs 3.3,3.4, the discs can be moved axially and the grinding of the sides of the glass plate 5 in the new slot can be continued.
  • An appropriate drawing illustrating this possibility is shown as Fig. 11.9.
  • the set of discs in this example contains two additional pairs of the cup discs 2.3,2.4 for chamfering the bottom edge and the upper edge of the glass plate 5 with an angle of cooperation of 45° with the peripheral side surface of the plate 5.
  • peripheral profile discs 3.3,3.4 may preferably be slotted discs.

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  • 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)
EP18460034.4A 2018-06-13 2018-06-13 Ensemble de disques de meulage des bords de plaques de verre Active EP3581331B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18460034.4A EP3581331B1 (fr) 2018-06-13 2018-06-13 Ensemble de disques de meulage des bords de plaques de verre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18460034.4A EP3581331B1 (fr) 2018-06-13 2018-06-13 Ensemble de disques de meulage des bords de plaques de verre

Publications (2)

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EP3581331A1 true EP3581331A1 (fr) 2019-12-18
EP3581331B1 EP3581331B1 (fr) 2022-07-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406841A (zh) * 2022-03-29 2022-04-29 江苏巨弘捆带制造有限公司 一种用于钢带生产的打磨装置

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261433A (en) 1991-07-09 1993-05-19 Kabushikigaisya Fukuyamatrkkou Apparatus for cutting corners of plate-like materials
EP0547995A1 (fr) 1991-11-29 1993-06-23 Sistemas Electro-Mecanicos S.A. Poligono Ind. "El Mijares" Machine de meulage et chanfreinage
EP1060833A1 (fr) 1999-06-14 2000-12-20 Corning Incorporated Procédé pour le finissage des bords de feuilles de verre
US6416382B1 (en) 1999-06-21 2002-07-09 Z. Bavelloni S.P.A. Bilateral automatic machine for edge-machining plates of glass, stone-like materials and the like
EP1468784A2 (fr) 2003-04-16 2004-10-20 Forvet S.r.l. Tête de meulage pour une machine à meuler les feuilles de verre et machine équipée d'une telle tête de meulage
EP1607177A1 (fr) * 2004-06-14 2005-12-21 Sankyo Diamond Industrial Co., Ltd. Dispositif de meulage pour le traitement circulaire des bords d'une pièce
WO2007091141A2 (fr) * 2006-02-07 2007-08-16 Gabriele Santi Dispositif de faconnage
WO2009034588A1 (fr) * 2007-09-13 2009-03-19 Forvet S.R.L. Ensemble de doucissage pour plaques de verre et tête de doucissage pour machine de doucissage rectiligne équipée d'un tel ensemble
WO2011142159A1 (fr) 2010-05-11 2011-11-17 ダイトエレクトロン株式会社 Dispositif de biseautage de tranches
WO2013065490A1 (fr) 2011-10-31 2013-05-10 旭硝子株式会社 Dispositif de traitement pour objet en forme de planche et procédé de traitement pour objet en forme de planche
WO2013072845A1 (fr) 2011-11-15 2013-05-23 Comandulli Costruzioni Meccaniche S.R.L. Machine d'usinage de bords de dalles
WO2013100126A1 (fr) 2011-12-28 2013-07-04 日本電気硝子株式会社 Dispositif et procédé de traitement d'une plaque de verre
WO2014035946A1 (fr) * 2012-08-30 2014-03-06 Corning Incorporated Feuilles de verre et procédés de façonnage de feuilles de verre
EP2853343A2 (fr) 2010-03-08 2015-04-01 Tecnema Technology S.r.l. Machine à meuler des éléments en forme de plaque, en particulier des tuiles et des dalles de matériau céramique, des pierres naturelles, du verre ou similaire
EP3012066A1 (fr) 2014-10-20 2016-04-27 Biesse S.p.A. Maschine d'usinage bilaterale pour les bords des panneaux avec des appareils integres pour arrondir les coins

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261433A (en) 1991-07-09 1993-05-19 Kabushikigaisya Fukuyamatrkkou Apparatus for cutting corners of plate-like materials
EP0547995A1 (fr) 1991-11-29 1993-06-23 Sistemas Electro-Mecanicos S.A. Poligono Ind. "El Mijares" Machine de meulage et chanfreinage
EP1060833A1 (fr) 1999-06-14 2000-12-20 Corning Incorporated Procédé pour le finissage des bords de feuilles de verre
US6416382B1 (en) 1999-06-21 2002-07-09 Z. Bavelloni S.P.A. Bilateral automatic machine for edge-machining plates of glass, stone-like materials and the like
EP1468784A2 (fr) 2003-04-16 2004-10-20 Forvet S.r.l. Tête de meulage pour une machine à meuler les feuilles de verre et machine équipée d'une telle tête de meulage
EP1607177A1 (fr) * 2004-06-14 2005-12-21 Sankyo Diamond Industrial Co., Ltd. Dispositif de meulage pour le traitement circulaire des bords d'une pièce
WO2007091141A2 (fr) * 2006-02-07 2007-08-16 Gabriele Santi Dispositif de faconnage
WO2009034588A1 (fr) * 2007-09-13 2009-03-19 Forvet S.R.L. Ensemble de doucissage pour plaques de verre et tête de doucissage pour machine de doucissage rectiligne équipée d'un tel ensemble
EP2853343A2 (fr) 2010-03-08 2015-04-01 Tecnema Technology S.r.l. Machine à meuler des éléments en forme de plaque, en particulier des tuiles et des dalles de matériau céramique, des pierres naturelles, du verre ou similaire
WO2011142159A1 (fr) 2010-05-11 2011-11-17 ダイトエレクトロン株式会社 Dispositif de biseautage de tranches
WO2013065490A1 (fr) 2011-10-31 2013-05-10 旭硝子株式会社 Dispositif de traitement pour objet en forme de planche et procédé de traitement pour objet en forme de planche
WO2013072845A1 (fr) 2011-11-15 2013-05-23 Comandulli Costruzioni Meccaniche S.R.L. Machine d'usinage de bords de dalles
WO2013100126A1 (fr) 2011-12-28 2013-07-04 日本電気硝子株式会社 Dispositif et procédé de traitement d'une plaque de verre
WO2014035946A1 (fr) * 2012-08-30 2014-03-06 Corning Incorporated Feuilles de verre et procédés de façonnage de feuilles de verre
EP3012066A1 (fr) 2014-10-20 2016-04-27 Biesse S.p.A. Maschine d'usinage bilaterale pour les bords des panneaux avec des appareils integres pour arrondir les coins

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406841A (zh) * 2022-03-29 2022-04-29 江苏巨弘捆带制造有限公司 一种用于钢带生产的打磨装置
CN114406841B (zh) * 2022-03-29 2022-07-26 江苏巨弘捆带制造有限公司 一种用于钢带生产的打磨装置

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