EP2433747B1 - Procédé et dispositif de ponçage des arêtes de plaques en verre s'étendant parallèlement les unes par rapport aux autres - Google Patents

Procédé et dispositif de ponçage des arêtes de plaques en verre s'étendant parallèlement les unes par rapport aux autres Download PDF

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Publication number
EP2433747B1
EP2433747B1 EP10179267.9A EP10179267A EP2433747B1 EP 2433747 B1 EP2433747 B1 EP 2433747B1 EP 10179267 A EP10179267 A EP 10179267A EP 2433747 B1 EP2433747 B1 EP 2433747B1
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EP
European Patent Office
Prior art keywords
grinding
grinding tool
coolant
tool
assigned
Prior art date
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Active
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EP10179267.9A
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German (de)
English (en)
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EP2433747A1 (fr
Inventor
Christoph Linnenbrügger
Joachim Korswird
Martin Schnitker
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.)
Benteler Maschinenbau GmbH
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Benteler Maschinenbau GmbH
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Priority to EP10179267.9A priority Critical patent/EP2433747B1/fr
Priority to US13/236,876 priority patent/US8753173B2/en
Publication of EP2433747A1 publication Critical patent/EP2433747A1/fr
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Publication of EP2433747B1 publication Critical patent/EP2433747B1/fr
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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
    • 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
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Definitions

  • the invention relates to a method for grinding the mutually parallel edges of glass plates, which are continuously transported by means of a horizontal conveyor on the rotating drivable grinding tools over, and that each grinding tool can be acted upon by a coolant flow.
  • the invention also relates to an apparatus for performing the method according to the invention ,
  • each edge of the glass plate is processed by at least three successively arranged grinding tools.
  • the feed rate of the glass plate to be processed is relatively low due to the material, while the peripheral speeds of the grinding tools are relatively high. Due to the material, it is essential that the grinding tools are cooled by a coolant during the grinding process. This cooling liquid is supplied via a supply line and the cooling liquid is collected and recycled for further use
  • the flat, the thickness of the glass plate determining surfaces are particularly high quality and depending on the intended use with a coating of a high quality material provided. Due to the previous coolant supply, it is unavoidable that coolant is sprayed onto these flat surfaces. This leads to an impairment of the surface or the coating, so that a rework is required.
  • the US 2003/0236060 discloses a glass plate grinding machine in which a plurality of grinding stations are arranged one behind the other. Each grinding station can have a supply system for a coolant.
  • the DE 100 20 800 shows a device for finishing an edge of a glass plate, in which a grinding wheel is sprayed at its upper and its lower edge with cooling liquid. Further, a mixture of glass dust and water is collected via a vacuum device which is generated within the housing during the grinding of the glass plate.
  • the invention has for its object to provide a method of the type described in more detail, in the implementation of the design complexity of a plant is minimized and the machined glass plates have a surface finish that meets the requirements without rework.
  • the invention is further based on the object to show a working device according to the invention, in which at least the design effort for the arrangement of the grinding tools is reduced, and which is also designed so that the flat surfaces and the coatings during the grinding process remain free of the coolant.
  • the design effort for a device operating according to the invention device is already reduced by the fact that the number of grinding units is reduced to two pieces, preferably favoriist, that each edge is processed by means of a single Schleifaggragates.
  • the Luftabsaugströmung is so intense that the centrifugal force of the grinding tool is overcome during the grinding process, so that a clearance for the air is formed.
  • the grinding tool is transferred to the desired state, i. the grinding tool, usually a grinding wheel, is machined on the peripheral surface so that the changes in the peripheral surface resulting from the wear are eliminated, i. the surface quality of the peripheral surface of the grinding wheel is always optimized.
  • the object directed to the device for grinding the mutually parallel edges of glass plates, in particular for carrying out the method, is achieved by a device according to claim 4.
  • each edge of the glass sheet is processed with a maximum of two grinding tools, but preferably with a grinding tool.
  • This is made possible by the units explained below.
  • the device that thedeffenzu111 threaten is guided laterally past the grinding wheel or the grinding tool, and that the coolant flow is diverted and divided by the deflection and Stromaufteilsegment towards the grinding tool, in the form that the grinding wheel or the Grinding tool is looped semicircular, so that the coolant supply takes place over an angle which may be in the range of 180 °.
  • each grinding tool is fixed by means of a clamping device on the rotatably driven grinding spindle, and that each grinding tool is arranged in a multi-part housing, wherein the individual housing parts are arranged one above the other, preferably three housing parts are provided, and that the middle housing part, the grinding tool is assigned, that the upper housing part is stationary, and the lower housing part about a vertical Axis for removing the released from the grinding spindle grinding tool is pivotable, and that the deflection and Stromaufteilsegment arranged in the central housing part or that the deflection and Stromaufteilsegment forms the central housing part.
  • the clamping device is designed so that a release or unlocking of the grinding tool from the outside is possible.
  • the housing part assigned to the grinding tool increases this cross-sectional direction at the housing part assigned to the vacuum source on the side assigned to the vacuum generator. As a result, the centrifugal force of the grinding tool can be overcome by the vacuum.
  • the vacuum source associated end of this housing part is designed as a flange for connection to the coolant suction.
  • the device has a fixed portal as a support frame for at least the horizontal conveyor, a central and below the plane of passage of the glass plates lying support bar, the two grinding tools having abrasive aggregates and an actuator for the support strip.
  • the horizontal conveyor consists of two spaced associated with the edge of the glass plate, connected to at least one vacuum source Saugbandageern, and that by means of an actuator at least one Saugbandageer and at least one grinding unit is adjustable.
  • a constructive simple solution for an actuator of the support rail is given if it is effective transversely to the transport direction of the suction belt conveyor, and that the actuator contains two spaced adjustment belt.
  • each adjustment belt consists of two spaced individual belts that the pulleys each Verstellriemens have such different diameters that the rotational speed of a single belt is twice as large as that of the other single belt.
  • the conveyor belt with the higher speed could be seen as a drive belt and the conveyor belt with the lower circulation speed as an adjustment belt for the Saugbandanier and possibly also for the grinding unit.
  • each sharpening tool is assigned a sharpening device such that the peripheral surface of the grinding wheel or grinding tool can be considered as smooth surface.
  • the advantage is that no disassembly is necessary for sharpening the grinding tool. Sharpening the abrasive tool is also referred to as peeling.
  • FIG. 1 shows in a perspective and simplified representation of the grinding station 10.
  • This grinding station 10 includes a in the FIG. 2
  • This portal frame 11 consists essentially of two lateral and vertical columns 12, 13, an upper slide guide 14 and a transversely to the columns 12, 13 stationary cross-beam 15.
  • This cross-beam 15 are paired pulleys 16, 17 associated, are guided over the conveyor belt, not shown.
  • These guide rollers 16, 17 are part of an actuator, not shown, for the glass plates fixing suction belt conveyor 18, 19.
  • the Saugband makeuper 18, 19 are known per se and have a suction box, which is connected to a vacuum source 20. For transporting the glass plates, not shown Each Saugband redesigner 18, 19 equipped with a hinted, perforated conveyor belt.
  • the grinding station 10 includes two on hand FIG. 3 grinding units 21, 22, which are explained in greater detail, stand at a distance from the suction belt conveyors 18, 19 and are adjustably arranged on the sides of the suction belt conveyors 18, 19 remote from one another.
  • Each sanding unit 21, 22 is equipped with a sharpening device 23, 24 in order to process the grinding tool of the sanding unit 21, 22 after a certain wear.
  • each grinding unit 21, 22 is adeffenabsaugtechnisch 25, 26 connected, which are formed as a cooling housing, and open in a not further explained separator 27, 28.
  • separators 27, 28 By means of these separators 27, 28, the solid particles are removed from the cooling water.
  • Each separator 27, 28 is conductively connected to a vacuum generator 29, 30. The cooling water is passed from there into a cooling water tank, not shown, and used for further cooling of the grinding tools.
  • the Figures 3 and 4 show that in the illustration according to the FIG. 1 left sanding unit 21 each in perspective views.
  • the grinding unit 22 of the opposite right side is constructed in mirror image.
  • the grinding unit 21 includes a grinding tool 31 in the form of a grinding wheel, which is placed on the grinding spindle 33 by means of a clamping device 32, which is not explained in greater detail.
  • a pulley 34 is placed, so that the grinding spindle 33 is driven by a belt, not shown, and with a motor.
  • the grinding tool 31 is located within a housing 35, which consists in the illustrated embodiment of an upper, the grinding spindle 33 facing housing part 36, a middle housing part 37 and a lower, the grinding spindle 33 facing away from the housing part 38.
  • the housing parts 36 and 38 are opened in the direction of the coolant suction line 25. How the particular FIG. 4 shows, the grinding unit 21 is designed so that the grinding tool 31 rotates in the transition region between the central housing part 37 and the lower housing 38.
  • the segment facing away from the coolant suction line 25 or arcuate end region of the middle housing part 37 is designed as a deflection and current distribution segment, and is closed towards the outside.
  • This Housing part 37 is provided with a connection 39 for thedeffenzu Geneva, not shown.
  • the incoming coolant flow impinges on the coolant suction line 25 facing away from the end and is diverted and divided this end portion of the housing part 37 is provided with an inner ring having a plurality of holes with a has relatively small diameter through these holes through many individual streams are passed to the grinding tool 31
  • the middle housing part 37 is connected via a flange 40 with the coolant suction line 25.
  • the region between the grinding tool 31 and the flange 40 is formed as a cooling housing and widens in cross-section toward the flange 40th
  • the lower housing part 38 is pivotable about a vertical axis. If the grinding tool 31 is released by the grinding spindle 33 after the clamping device 32 has been actuated, the lower housing part 38 can be pivoted and the grinding tool can be removed. For changing the grinding tool 31 no assembly work is therefore necessary.
  • FIG. 4 shows the grinding unit 21 in the assembled state. Clearly the position of the Schlelfwerkmaschinemaschinees 31 can be seen. The figure also shows that the grinding unit 21 is extremely compact. The figure also shows that the upper housing part 36 is located within the middle housing part 37.
  • FIG. 5 shows in conjunction with the FIG. 1 in that a support rail 41 is always provided centrally between the movable Saugbandageem 18, 19, which is below the passage plane of the glass plates to be processed transverse to this support rail 41 are two Verstellriemen 42, 43 are provided, which are transverse to the support rail 41 and to the Saugbandreaern 18th , 19 work.
  • These adjustment belts 42, 43 form an actuator for the support rail 41.
  • the adjustment belts 42, 43 are driven by the suction belt conveyor 18, 19, so that the support rail 41 is moved.
  • Each Versteltriemen 42, 43 consists of two individual belt drives 44, 45 wherein the pulleys are matched in diameter from each other so that the rotational speed of the individual belt 45 is 50% of the rotational speed of the individual belt 44.
  • the support rail 41 is moved at half the drive speed. Since the individual belts 44, 45, due to the smaller diameter of the pulleys, rotate at half the speed, as the Verstellriemen 42, 43, and the support bar 41 is moved at half the speed the suction belt conveyor 18 or 19, so that the support bar 41 is always in the middle between the Saugband redesignern 18, 19.
  • the invention is not limited to the illustrated embodiment. It is essential that, procedurally, the coolant flow is deflected by a deflecting and flow dividing element so that it impinges on the grinding tool 31 from the side of the glass plate, advantageously dividing this coolant flow into a multiplicity of individual flows. Furthermore, it is important that each glass edge is processed by a maximum of two grinding units 21, 22 but always only by a grinding unit, and that the feed rate of the glass plate and the feed movement of each grinding unit 21, 22 are coordinated so that in the corner regions of the glass plate a smooth-surfaced bevel can be sanded.

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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)

Claims (12)

  1. Procédé pour le doucissage des arêtes, parallèles l'une à l'autre, de plaques de verre qui peuvent être transportées en continu, à l'aide d'un transporteur horizontal, devant des outils abrasifs (21, 22), opposés l'un à l'autre et pouvant être entraînés en rotation, chaque outil abrasif pouvant être alimenté par un courant de fluide de refroidissement, et chaque arrête de la plaque de verre subissant un doucissage à l'aide d'un équipement de doucissage (21, 22) ou de deux équipements de doucissage (21, 22) disposés l'un derrière l'autre quand on regarde dans la direction de passage des plaques de verre, caractérisé en ce que le courant de fluide de refroidissement est renvoyé par un élément de renvoi et de partage du courant, de telle sorte que cet élément soit dirigé du côté de la plaque de verre vers l'outil de doucissage (31), que le courant de fluide de refroidissement est partagé en un grand nombre de courants fins de fluide de refroidissement, et que le fluide de refroidissement est aspiré à l'aide d'une conduite d'aspiration (25, 26), raccordée à un générateur de vide (29, 30), auquel cas les courants fins de fluide de refroidissement sont dirigés dans la direction de la conduite d'aspiration (25, 26) ; que, à l'aide d'un dispositif de mesure de l'outil, la position de chaque outil abrasif (31) est déterminée en hauteur, et le diamètre de l'outil abrasif (31) est déterminé, et que la position de chaque outil abrasif (31) peut être ajustée de telle sorte qu'au moins la position des outils abrasifs (31) soit étalonnée par rapport à l'arrête correspondante de la plaque de verre en cours de déplacement, et les sommets de la plaque de verre sont affûtés en chanfrein.
  2. Procédé selon la revendication 1, caractérisé en ce que l'écoulement d'aspiration du fluide de refroidissement est intense au point que la force centrifuge de l'outil abrasif (31) est surmontée pendant l'opération de doucissage, de façon à former un espace libre pour de l'air.
  3. Procédé selon la revendication 1, caractérisé en ce que l'outil abrasif (31) est placé dans son état de consigne à l'aide d'un dispositif d'affûtage (23, 24) affecté à l'outil abrasif (31).
  4. Dispositif pour l'adoucissage des arêtes parallèles l'une à l'autre de plaques de verre, en particulier pour la mise en oeuvre du procédé selon la revendication 1, qui est équipé d'un transporteur horizontal (18, 19), destiné à transporter les plaques de verre, et d'outils abrasifs (31), opposés l'un à l'autre, pouvant être entraînés en rotation chacun par un organe d'entraînement (21, 22), et qui est équipé, pour le refroidissement de chaque outil abrasif (31), d'une conduite d'amenée de fluide de refroidissement, caractérisé en ce que le dispositif est, sur chaque côté de l'arrête destinée à être adoucie de la plaque de verre, d'un équipement de doucissage (21, 22) ou de deux équipements de doucissage (21, 22), disposés l'un derrière l'autre quand on regarde dans la direction de passage des plaques de verre, équipements qui sont équipés d'un outil abrasif (31) pouvant être entraîné en rotation, qu'à chaque outil abrasif (31) est affectée une conduite latérale d'amenée du fluide de refroidissement, ainsi qu'une conduite d'aspiration du fluide de refroidissement (25, 26), disposée à distance de cette dernière, et que le courant de fluide de refroidissement amené peut être renvoyé ou partagé à l'aide d'un segment (37) de renvoi et de partage du courant, du côté de la plaque de verre dans la direction de l'outil abrasif (31).
  5. Dispositif selon la revendication 4, caractérisé en ce que chaque outil abrasif (31) est, à l'aide d'un dispositif de serrage (32), fixé sur la broche porte-meule pouvant être entraînée en rotation, et que chaque outil abrasif (31) est disposé dans un carter (36, 37, 38) en plusieurs parties, les différentes parties (36, 37, 38) du carter étant disposées les unes au-dessus des autres, que de préférence trois parties (36, 37, 38) du carter sont disposées l'une au-dessus de l'autre, que l'outil abrasif (31) est affecté au carter central (37), et que la partie supérieure du carter (36) est fixe en position, et que la partie inférieure du carter (38) peut pivoter autour d'un axe vertical, pour permettre le prélèvement de l'outil abrasif (31) dégagé de la broche porte-meule (33), et que le segment de renvoi et de partage du courant est disposé dans la partie centrale du carter (37), ou que le segment de renvoi et de partage du courant forme la partie centrale de carter (37).
  6. Dispositif selon la revendication 5, caractérisé en ce que la partie de carter (37) affectée à l'outil abrasif (31) est disposée contre la face dirigée vers la source de vide (29, 30), et voit sa section transversale s'agrandir.
  7. Dispositif selon l'une des revendications précédentes 4 à 6, caractérisé en ce qu'un séparateur (27, 28), destiné à séparer les particules solides, est prévu entre le générateur de vide (29, 30) et la conduite d'aspiration du fluide de refroidissement (25, 26), et que la section transversale de la conduite d'aspiration du fluide de refroidissement (25, 26) est supérieure à la section transversale de la conduite d'amenée du fluide de refroidissement.
  8. Dispositif selon l'une ou plusieurs des revendications précédentes 4 à 7, caractérisé en ce que le dispositif comprend un portique fixe en position pour au moins le transporteur horizontal (18, 19), un rail de soutènement (41), disposé en position centrale et en dessous du plan de passage des plaques de verre, les deux équipements de doucissage (21, 22) destinés à loger les outils abrasifs (31), et un organe de réglage pour le transporteur horizontal (18, 19).
  9. Dispositif selon l'une ou plusieurs des revendications précédentes 4 à 8, caractérisé en ce que le transporteur horizontal comprend deux transporteurs à bande aspirante (18, 19), disposés à distance de l'arrête correspondante de la plaque de verre, et raccordés à au moins une source de vide, et que, au moyen d'un organe de réglage, au moins un transporteur à bande aspirante (18, 19) et au moins un équipement de doucissage (21, 22) peuvent être ajustés parallèles l'un à l'autre et à distance l'un de l'autre.
  10. Dispositif selon l'une ou plusieurs des revendications précédentes 4 à 9, caractérisé en ce qu'un organe de réglage, destiné à ajuster la position du rail de soutènement (41), est opérationnel transversalement à ce dernier, et est constitué de deux courroies de réglage (42, 43) à distance l'une de l'autre.
  11. Dispositif selon l'une ou plusieurs des revendications précédentes 4 à 10, caractérisé en ce que chaque courroie de réglage (42, 43) est constituée de deux courroies individuelles (44, 45) à distance l'une de l'autre, que les galets de renvoi (16, 17) des courroies de réglage (42, 43) présentent des diamètres différents tels que la vitesse périphérique de l'une des courroies individuelles soit deux fois plus grande que celle de l'autre courroie individuelle.
  12. Dispositif selon l'une ou plusieurs des revendications 4 à 11, caractérisé en ce qu'à chaque outil abrasif (31) est affecté un dispositif d'affûtage (23, 24), de telle sorte que la surface périphérique de l'outil abrasif (31) puisse être considérée comme ayant une surface lisse.
EP10179267.9A 2010-09-24 2010-09-24 Procédé et dispositif de ponçage des arêtes de plaques en verre s'étendant parallèlement les unes par rapport aux autres Active EP2433747B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10179267.9A EP2433747B1 (fr) 2010-09-24 2010-09-24 Procédé et dispositif de ponçage des arêtes de plaques en verre s'étendant parallèlement les unes par rapport aux autres
US13/236,876 US8753173B2 (en) 2010-09-24 2011-09-20 Method and device for grinding the mutually parallel edges of glass plates

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Application Number Priority Date Filing Date Title
EP10179267.9A EP2433747B1 (fr) 2010-09-24 2010-09-24 Procédé et dispositif de ponçage des arêtes de plaques en verre s'étendant parallèlement les unes par rapport aux autres

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EP2433747A1 EP2433747A1 (fr) 2012-03-28
EP2433747B1 true EP2433747B1 (fr) 2013-04-17

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WO2015130586A1 (fr) * 2014-02-28 2015-09-03 Corning Incorporated Appareil et procédés de traitement du verre
CN108044512A (zh) * 2017-12-26 2018-05-18 佛山市博裕城玻璃机械有限公司 一种磨边机的冷却机构及一种磨边机

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US8753173B2 (en) 2014-06-17
US20120077421A1 (en) 2012-03-29
EP2433747A1 (fr) 2012-03-28

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