EP2303507B1 - Procédé et dispositif de meulage automatique des arêtes de plaques de verre dans des conditions de salle blanche - Google Patents

Procédé et dispositif de meulage automatique des arêtes de plaques de verre dans des conditions de salle blanche Download PDF

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Publication number
EP2303507B1
EP2303507B1 EP09757119A EP09757119A EP2303507B1 EP 2303507 B1 EP2303507 B1 EP 2303507B1 EP 09757119 A EP09757119 A EP 09757119A EP 09757119 A EP09757119 A EP 09757119A EP 2303507 B1 EP2303507 B1 EP 2303507B1
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EP
European Patent Office
Prior art keywords
grinding
grinding wheel
glass
robot
glass pane
Prior art date
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Active
Application number
EP09757119A
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German (de)
English (en)
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EP2303507A1 (fr
Inventor
Egbert Wenninger
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.)
Grenzebach Maschinenbau GmbH
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Grenzebach Maschinenbau GmbH
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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
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines

Definitions

  • Modern glass facades are often not only a functional element of a building but increasingly also serve solar power generation.
  • Tailor-made solar modules enable tailor-made integration in building grids and profiles.
  • Semitransparent solar cells as well as opaque solar cells with transparent areas make photovoltaic glazing appear flooded with light.
  • the solar cells often take on the desired effect of sun and glare protection.
  • the production of such photovoltaic systems requires working conditions which are common in the production of semiconductors and integrated electronic circuits. These so-called clean room conditions also make it necessary to handle areally large shock-sensitive glass plates in the production of photovoltaic systems. For safe handling of such glass plates, it is necessary to eliminate the sharp edges resulting from breaking the required formats and to abrade these edges.
  • a vacuum clamping device for machines for edge processing of glass plates has become known.
  • This clamping device is based on the task of reducing the time and effort involved in tensioning and loosening the glass plates by means of a corresponding vacuum control.
  • a vacuum clamping device for machines for grinding and polishing the edges of round and oval glass plates is described in this document, which is characterized in that with the vacuum clamping device, a compressed air supply device is connected by a provided with a shut-off line via a vacuum line with a clamping plate and a, containing only a short-term opening shut-off, line with a vacuum line blocking solenoid valve is connected.
  • a contact pressure gauge is connected to the vacuum line, which triggers a sequence control when a minimum negative pressure is reached.
  • an edge grinding machine which is based on the object of designing an edge grinding machine in such a way that the setting of the necessary working distance of the peripheral grinding wheels - aggregates to one another can be set quickly, easily and reliably when using profiled peripheral grinding wheels.
  • This design offers the advantage that with a necessary change in the distance of the peripheral grinding wheel assemblies to each other no skill or special care is required because only a predetermined end stop must be moved to bring the corresponding peripheral grinding wheels - units in the desired position.
  • a method and apparatus for cutting a glass blank according to a particular contour comprising the steps of: automatically feeding a glass blank to a scoring machine, then to a breaking machine and then to a grinding machine.
  • the US 2005/090189 A1 relates to an apparatus and a method for grinding and / or polishing the edge of a glass plate.
  • the grinding wheel assembly at least one, for simultaneously grinding two adjacent edges preferably has two peripheral grinding wheels, the axes of rotation are arranged during grinding substantially parallel to the edges to be ground.
  • This machine is also not suitable for automatic edge grinding of glass plates.
  • a device for polishing the edge of a glass sheet which is moved by means of a separate drive on a polishing pad along. In this case, it is ensured by means of a partial device which exerts a pressure that a previously determined constant contact pressure prevails between the polishing disk and the edge of the moving glass pane. The overburden resulting from the polishing process is disposed of.
  • this known device is not suitable for the purity levels required in cleanrooms.
  • the invention is therefore based on the object of specifying a method or a device which enables the automatic edge grinding of glass plates under clean-room conditions cost-effectively, quickly and safely.
  • FIG.1 A bird 's eye view of the overall device when deployed in a production line is shown.
  • the production line is represented here by the left and the right part of a roller conveyor (8).
  • a receiving stack (12) consisting of several superimposed glass plates (11) is shown.
  • both a production line in the form of a roller conveyor can be selected as a supply medium and the possibility of removing the glass plates (11) to be processed from a receiving stack is given.
  • the example of Fig.1 is the base frame (1), which carries the essential parts of the grinding device according to the invention, inserted in the course of a production line.
  • the arm of the multi-axis robot (2) shown in the background is equipped at its end with a rectangular suction frame (9), each provided at the ends of its two transverse sides and in the middle of the two longitudinal sides with a square shaped suction unit (10) is.
  • a suction unit (10) is adapted by its shape of the angular structure of a glass plate. It is compact and very absorbent.
  • the system for generating, controlling and distributing the suction air necessary for sucking in a glass plate (11) to be picked up is not shown in the figures shown.
  • the suction lines required for this process follow all conceivable movements of the arm of the robot (2), their execution is familiar to the expert.
  • the position sensor (7) is in the Fig.1 attached to the top of the stylized cone. Its altitude is identical to the upper edge of the grinding wheel (13).
  • the grinding wheel (13) is in the Fig.1 housed in the housing (6) for the suction and therefore not visible here. For details, see the Figure 4 and the Figure 5 directed.
  • the position sensor (7) essentially detects the altitude of a grinding of the grinding wheel (13) to be ground by the robot (2) horizontally held edge of a glass plate (11) to be processed.
  • the manner of attachment of the position sensor (7) is not essential here, it only has to be fixed in the region of a glass edge to be machined.
  • the positioning accuracy and the speed of the arm movements of the robot (2) are relatively high. This is especially true in the event that the robot must approach its target position with the glass plate (11) without a correction.
  • further position sensors (7) are used to determine their exact position. This can also be provided for the case that larger suction frames (9) are attached to the robot (2) for processing larger glass plates (11) than the one shown.
  • a suction frame (9) provided for exhibition purposes with the company emblem, and six installed on the bottom suction units (10).
  • the material of the suction frame (9) is rigid and relatively lightweight.
  • Kevlar can be used as the material for the suction frame (9).
  • FIG. 3 shows a representation of the overall apparatus from a normal perspective when used outside a production line.
  • the stylized mounting of a position sensor (7) can be seen here.
  • the illustrated glass plate (11) is shown in the position of machining by the grinding wheel.
  • a glass plate (11) is sealed in the area of the grinding process as well as possible against the surrounding clean room.
  • the course of the edge to be ground a glass plate (11) is in the Fig. 4 represented as a horizontal line.
  • a Ringabsaugung (16) is carried out via holes, slots or similar structures in the region of the pipeline shown facing the sealing lip (17).
  • the ring extraction (16) can take place here directly via the air flow of the Hauptabsaugkanals (14), or it can have its own connection to the Lucasabsaugstrom and regulated in intensity.
  • the reference value for this regulation is the output signal of a sensor (not shown separately) for detecting particles emerging from the sealing lip (17).
  • a grinding wheel calibration device (18) detects and monitors the condition of the grinding wheel (13).
  • the general degree of wear measured by the device (18) and irregularities in the contact pattern of the surface of the grinding wheel (13) are thereby detected in good time and compared with known tolerance values.
  • the semicircular shape of the end portion of the Kleinabsaugkanals (14), as shown in the Figure 4 is shown, is only an example. It is also possible in this area a parabolic, hyperbolic or rectangular shape.
  • cleaning system in this end region of the Hauptabsaugkanals (14) is provided which cleans the glass sheet (11) after the Schteifvorgang.
  • This cleaning system advantageously consists of two, each of a small ring brush resembling cleaning elements which are arranged substantially parallel to the grinding edges of a glass sheet (11) rotating, the axes of rotation, at a Abschaskante of 45 degrees, perpendicular to each other and the direction of rotation is determined so that abrasive particles are conveyed into the Hauptabsaugkanal (14).
  • the intensity of the supply of cleaning fluid and / or the rotational speed of the described ring brushes can be regulated in accordance with the advance speed of a glass pane (11) as a function of relevant process parameters.
  • Fig. 5 is the suction of the Fig. 4 shown rotated at a right angle.
  • the housing (6) for the Suction and the grinding wheel (13), the sealing lip (17) is particularly easy to recognize.
  • a control of the exact positioning of the glass plate (11) can be effected via further, not separately shown, line lasers or via markings whose position is monitored by laser and / or sensors.
  • a glass plate (11) can be implemented with the greatest possible accuracy by the arm of the robot (2) and fed under clean room conditions for further processing by the edge grinding device according to the invention.
  • the grinding wheel spindle (4) is adjustable in height.
  • An additional sensor detecting this movement supplies corresponding parameters to the control program of the robot (2).
  • the simultaneous operation of a plurality of successively arranged grinding units is preferred.
  • Very special demands on this control program are made by the fact that after processing an edge of a glass plate (13) immediately a new edge in relation to the position of the grinding wheel (13) must be established and this process must be done quickly and accurately.
  • the interactive control of the movement elements and sensors used in each case requires a special control program. It is particularly pointed out at this point that, in contrast to other known glass grinding devices, it can not lead to grinding errors in the apparatus according to the invention or the corresponding method when the suction frame (9) does not accurately position a glass plate (11). Because by the direct detection of the exact control position of a glass plate (11) in relation to the grinding wheel (13) a safe work result is always guaranteed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Surface Treatment Of Glass (AREA)

Claims (11)

  1. Dispositif de chanfreinage-meulage automatique de plaques de verre dans des conditions d'ambiance propre, le dispositif présentant les caractéristiques suivantes :
    a) un robot multiaxe (2) porte sur son bras de saisie un bâti d'aspiration (9) présentant plusieurs unités d'aspiration (10) qui reprennent une plaque de verre (11),
    b) une unité de meulage (1) qui présente au moins un disque de meulage (13) monté en position fixe et installée dans la partie de pivotement utile du bras de saisie du robot (2),
    c) une unité d'étalonnage reliée à une unité de détection (18) qui surveille le degré d'usure et l'état du disque de meulage (13),
    d) au moins un détecteur de position (7) qui détecte la position du chant à traiter de la plaque de verre (11) et dont les données de mesure sont utilisées pour commander le robot (2),
    caractérisé par
    e) une installation d'aspiration qui aspire la matière de meulage produite lorsque l'unité de meulage (1) fonctionne, l'installation d'aspiration présentant un canal principal d'aspiration (14) au niveau duquel l'émulsion de meulage est apportée par un canal (15), la vitre (11) étant couverte dans la zone de meulage du disque de meulage (13) en demi-cercle concentrique par une lèvre d'étanchéité (17) flexible qui épouse des deux côtés la vitre (11) et l'intensité de l'aspiration annulaire étant régulée et servant de valeur de référence pour la régulation du signal de sortie d'un détecteur qui détecte des particules qui sortent de la lèvre d'étanchéité.
  2. Dispositif selon la revendication 1, caractérisé en ce que pour augmenter la précision du positionnement d'une plaque de verre (11) et/ou pour augmenter la rapidité du positionnement, plusieurs détecteurs de position (7), lignes laser ou repères dont la position est surveillée par laser et/ou par des détecteurs sont utilisés pour déterminer sa position exacte, en particulier lors du traitement d'assez grandes plaques de verre.
  3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la lèvre d'étanchéité (17) présente un conduit perforé supplémentaire d'aspiration de la matière de meulage sur son côté tourné vers le disque de meulage (13).
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la broche (4) du disque de meulage peut être ajustée en hauteur, un détecteur qui détecte ce déplacement délivrant les paramètres correspondants au programme de commande du robot (2).
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'une installation de nettoyage qui nettoie la vitre (11) après l'opération de meulage est prévue dans la partie finale du canal principal d'aspiration (14), l'installation de nettoyage étant constituée de deux éléments de nettoyage qui ressemblent chacun à une petite brosse annulaire et qui sont disposés à rotation essentiellement en parallèle aux chants à meuler d'une vitre (11), l'intensité de l'apport de liquide de nettoyage et/ou la vitesse de rotation des brosses annulaires pouvant être régulées en fonction de la vitesse d'avancement d'une vitre (11), cette vitesse étant elle-même fonction de paramètres pertinents du procédé.
  6. Procédé de chanfreinage-meulage automatique de plaques de verre dans des conditions d'ambiance propre, le procédé comportant les caractéristiques suivantes :
    a) un robot multiaxe (2) est configuré de telle sorte qu'il porte sur son bras de saisie un bâti d'aspiration (9) qui présente plusieurs éléments d'aspiration (10) qui reprennent une plaque de verre (11),
    b) une unité de meulage (1) qui présente au moins un disque rotatif de meulage (13) monté en position fixe est installée dans la plage de pivotement utile du bras de saisie du robot (2),
    c) le degré d'usure et l'état du disque de meulage (13) sont surveillés au moyen d'une unité d'étalonnage associée à un dispositif de détection (18),
    d) la position du chant à traiter de la plaque de verre (11) est détectée par au moins un détecteur de position (7) et ces données de mesure sont utilisées pour commander le robot (2),
    caractérisé en ce que
    e) une installation d'aspiration aspire la matière de meulage produite lorsque l'unité de meulage (1) fonctionne, l'installation d'aspiration présentant un canal principal d'aspiration (14) au niveau duquel l'émulsion de meulage est apportée par un canal (15), la vitre (11) étant couverte dans la zone de meulage du disque de meulage (13) en demi-cercle concentrique par une lèvre d'étanchéité (17) flexible qui épouse des deux côtés la vitre (11) et l'intensité de l'aspiration annulaire étant régulée et servant de valeur de référence pour la régulation du signal de sortie d'un détecteur qui détecte des particules qui sortent de la lèvre d'étanchéité.
  7. Procédé selon la revendication 6, caractérisé en ce que pour augmenter la précision du positionnement d'une plaque de verre (11) et/ou pour augmenter la rapidité du positionnement, plusieurs détecteurs de position (7), lignes laser ou repères dont la position est surveillée par laser et/ou par des détecteurs sont utilisés pour déterminer sa position exacte, en particulier lors du traitement d'assez grandes plaques de verre.
  8. Procédé selon l'une des revendications 6 ou 7, caractérisé en ce qu'une installation de nettoyage qui nettoie la vitre (11) après l'opération de meulage est prévue dans la partie finale du canal principal d'aspiration (14), l'installation de nettoyage étant constituée de deux éléments de nettoyage qui ressemblent chacun à une petite brosse annulaire et qui sont disposés à rotation essentiellement en parallèle aux chants à meuler d'une vitre (11), l'intensité de l'apport de liquide de nettoyage et/ou la vitesse de rotation des brosses annulaires pouvant être régulées en fonction de la vitesse d'avancement d'une vitre (11), cette vitesse étant elle-même fonction de paramètres pertinents du procédé.
  9. Procédé selon l'une des revendications 6 à 8, caractérisé en ce que le dispositif en vue de l'exécution du procédé est installé soit dans la zone de travail de la ligne de fabrication ou à l'extérieur de cette dernière.
  10. Programme informatique doté d'un code de programme permettant d'exécuter les étapes du procédé selon l'une des revendications 6 à 9 lorsque le programme est exécuté sur un ordinateur.
  11. Support lisible par machine et portant le code de programme d'un programme informatique permettant d'exécuter le procédé selon l'une des revendications 6 à 9 lorsque le programme est exécuté sur un ordinateur.
EP09757119A 2008-06-06 2009-06-02 Procédé et dispositif de meulage automatique des arêtes de plaques de verre dans des conditions de salle blanche Active EP2303507B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008027050A DE102008027050A1 (de) 2008-06-06 2008-06-06 Verfahren und Vorrichtung zum automatischen Kanten - Schleifen von Glasplatten unter Reinraumbedingungen
PCT/DE2009/000772 WO2009146685A1 (fr) 2008-06-06 2009-06-02 Procédé et dispositif de meulage automatique des arêtes de plaques de verre dans des conditions de salle blanche

Publications (2)

Publication Number Publication Date
EP2303507A1 EP2303507A1 (fr) 2011-04-06
EP2303507B1 true EP2303507B1 (fr) 2012-02-01

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EP09757119A Active EP2303507B1 (fr) 2008-06-06 2009-06-02 Procédé et dispositif de meulage automatique des arêtes de plaques de verre dans des conditions de salle blanche

Country Status (8)

Country Link
US (1) US8556680B2 (fr)
EP (1) EP2303507B1 (fr)
JP (1) JP5328900B2 (fr)
KR (1) KR101240205B1 (fr)
CN (1) CN102046329B (fr)
AT (1) ATE543607T1 (fr)
DE (2) DE102008027050A1 (fr)
WO (1) WO2009146685A1 (fr)

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CN114178978B (zh) * 2022-02-15 2022-06-21 新沂市东方石英玻璃有限公司 一种低羟基石英玻璃加工用研磨装置
CN114800132B (zh) * 2022-05-12 2024-03-01 东莞市聚泰玻璃有限公司 一种铝硅成型玻璃加工工艺
CN115847228B (zh) * 2022-11-30 2023-09-15 佛山市高明正兴机电有限公司 一种自主定位的玻璃磨边机

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JP5328900B2 (ja) 2013-10-30
JP2011523598A (ja) 2011-08-18
US20110104988A1 (en) 2011-05-05
CN102046329A (zh) 2011-05-04
US8556680B2 (en) 2013-10-15
DE102008027050A1 (de) 2009-12-10
ATE543607T1 (de) 2012-02-15
CN102046329B (zh) 2014-01-01
KR101240205B1 (ko) 2013-03-06
EP2303507A1 (fr) 2011-04-06
WO2009146685A1 (fr) 2009-12-10
DE112009001933A5 (de) 2011-06-01
KR20110021918A (ko) 2011-03-04

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