EP0255476A1 - Edge-grinding machine for plate glass - Google Patents

Edge-grinding machine for plate glass Download PDF

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Publication number
EP0255476A1
EP0255476A1 EP87810377A EP87810377A EP0255476A1 EP 0255476 A1 EP0255476 A1 EP 0255476A1 EP 87810377 A EP87810377 A EP 87810377A EP 87810377 A EP87810377 A EP 87810377A EP 0255476 A1 EP0255476 A1 EP 0255476A1
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EP
European Patent Office
Prior art keywords
stop
machine
grinding
conveyor track
stops
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Withdrawn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
EP87810377A
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German (de)
French (fr)
Inventor
Ernst Zumstein
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.)
Bystronic Maschinen AG
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Bystronic Maschinen AG
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Filing date
Publication date
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Publication of EP0255476A1 publication Critical patent/EP0255476A1/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02Machines 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
    • B24B9/06Machines 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
    • B24B9/08Machines 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
    • B24B9/10Machines 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
    • B24B9/107Machines 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 glass plates while they are turning

Definitions

  • the present invention relates to an edge-grinding machine for glass sheets, particularly for vehicle windows, with a conveyor track for feeding and carrying away of the discs into and out of a processing station, on-coming - cash stops for determining the wheel position in the machining site, as well as a turntable for receiving and Rotating the discs during grinding using a grinding tool.
  • a machine of this type is known from EP-A 0 126 038.
  • the conveyor track of this known machine has conveyor belts running in the conveying direction, each of which transports a glass pane to the processing point, where the glass pane is guided against stops which determine its position.
  • the stops are permanently mounted below the conveyor belts and can be pneumatically raised to an effective position to position a glass pane, and which are in an ineffective, lowered position when a finished glass pane is to be transported out of the processing point.
  • This known embodiment has several disadvantages. Every new adjustment of the stops has to be done by hand, in that the stops have to be dismantled, moved to the new location, reassembled and precisely adjusted.
  • a continuous adjustment of the stops in the longitudinal direction of the conveyor track is only possible if the conveyor track is constructed in the manner mentioned from longitudinal conveyor belts, between which the stops can be raised at any point in the longitudinal direction.
  • a completely arbitrary arrangement of the stops across the conveyor track is not possible because of the continuous conveyor belts.
  • An object of the present invention is now to simplify and improve the conveyor track for transporting the glass panes and the adjustability of the stops. This goal is achieved in that the stops, the turntable and the grinding tool are arranged on a cantilever extending across the conveyor track.
  • the conveyor track is thus now free of additional elements, in particular of stops, and it can be designed in a particularly simple and appropriate manner, preferably as a roller conveyor.
  • the stops can be set in any direction regardless of the conveyor track.
  • the setting of the stops significantly and improve that at least one incrementally adjustable by a motor stop cheibenposition for determining the S is present.
  • at least two stops in this manner can be set, wherein a longitudinal stop for determining the wheel position in the conveying direction of the conveyor track may be designed as a stop bar, while a transverse stop can be attached chleifkopf on a S, may be what already sent incrementally by means of a motor and thus can also take over the stop function for determining the transverse position of the disk on the conveyor track or in the processing point.
  • Another object of the invention is to create optimal positioning conditions for the glass pane, in that the stops are such that a three-point contact of the glass pane always takes place. The disc always reaches a clearly defined stop position.
  • Another object of the invention is to achieve a correspondingly precise control of the movement of the turntable or of the glass pane adhering to it.
  • This goal is achieved in that the turntable is driven by a gear mechanism, the play of which is eliminated by a preload torque, for example an air motor.
  • This torque should be selected higher than any torque acting on the glass pane in any direction so that any play in the gearbox never comes into play.
  • the machine shown has a machine table 2 on a machine bed 1.
  • This machine table is designed as a roller conveyor, each roller 3 being driven by a central drive 6 via belts 7 and 8 via the gears 4 and belts 5 shown in FIG. 5.
  • FIGS. 3 and 5 there are two shorter rollers 3 'in the middle of the machine table in such a way that a gap 9 is formed on one side in the roller conveyor, into which parts one in FIGS 5 schematically illustrated grinding head 10 can enter laterally.
  • FIGS. 1 and 3 several, for example three, similar machines can be arranged one behind the other, i.e. Glass panes 11 can be fed via a conveyor device 120 and then via the roller tracks 3 of the machines arranged one behind the other in the direction of the arrows in FIG.
  • a stop bar 12 Kunststoffsanschlag than L, which determines the position of the glass sheets in the travel direction or in the conveying direction of the roller tracks, and a transverse stop 13 which is arranged on the grinding stone 10 and determines the position of the glass sheet transversely to the roller conveyor or the conveying direction thereof.
  • the stop bar 12 is attached to a carrier 14 which can be incrementally adjusted by means of a spindle 15 and a motor 16 along a guide 17 in the longitudinal direction or conveying direction of the roller conveyor 3. As shown in FIGS.
  • the carriers 14 and thus the stop bars 12 of the three machines are coupled by means of linkages 14 ', so that adjustment means 15, 16 are only to be provided in one machine.
  • the stop bar 12 which is parallel to the rollers 3 and 3 ', is connected to a vertical guide 12a, and can be moved from the inactive inactive position shown in FIG. 6 to a lower one by means of a pneumatic cylinder 12b , effective position can be moved directly over the rollers 3.
  • Fig. 6 also shows the stop pin 13, which at the lower end of the grinding head 10 with the grinding wheel 18 is firmly attached.
  • a slide 10 'with the grinding head 10 with its drive motor 19 can, as shown in FIG. 2, be moved incrementally by means of a spindle 20 and a motor 21 along a cantilever 22 projecting transversely over the roller conveyor 3, with a stroke of, for example, 600 mm.
  • the guide 17 is attached to the outer, free end of the boom 22.
  • a vertical-axis turntable 23 is mounted, which can be driven incrementally via a gear 24 by means of a motor 25.
  • the motor 25 and the gear 24 are designed, for example, in such a way that the turntable 23 is rotated by one thousandth of a degree for each step of the motor 25.
  • the turntable 23 is provided with a pneumatic suction device for receiving glass panes 11.
  • a certain torque can be continuously exerted on the turntable 23 in a certain direction by means of a pneumatic motor 28 via a toothed belt 26 and a transmission 27. This torque must be greater than any torque exerted on the glass plate 11 by the cutting force of the grinding wheel 18, so that the toothings of the gear 24 always remain in the same way without play. There can therefore be no errors due to backlash in the gear 24.
  • lifting bars 29 are arranged symmetrically with respect to the turntable 23 between rollers 3 and 3 ', which are supported on a supporting frame 30, which by means of a pneumatic cylinder 31 from the rest position shown in which the lifting bars 29 are somewhat below the upper horizontal Tangent plane to the rollers 3 are raised to raise a glass disc resting on the rollers 3 against the turntable 23.
  • the lifting strips 29 are also of different lengths in order to penetrate the grinding head 10 to allow gene across the roller conveyor in the immediate vicinity of the turntable 23 (Fig. 6). This makes it possible to process glass panes of very different sizes. The smallest panes of 0.3 x 0.3 m and the largest panes of 1.2 m wide and 0.8 m long can be machined in relation to the direction in which the glass panes run.
  • raw glass panes 11 according to FIG. 3 are fed in at certain intervals, these intervals corresponding almost exactly to the mutual distance of the three machines arranged in series.
  • the longitudinal stops 12 of the three machines are lowered simultaneously and position the three supplied glass sheets in the longitudinal direction.
  • the front edge of the stop bars 12 against which the panes run or the edges of these disks that hit the bar are designed in such a way that a two-point support is created such that the panes rest against the bars 12 in a clearly defined position.
  • the grinding head 10 is in a somewhat retracted position, that is to say in a position shifted somewhat upwards relative to the position according to FIG. 3, so that the glass panes can enter freely next to the stops 13.
  • the grinding heads 10 or the transverse stops 13 are now advanced into a very specific stop position by means of the motors 21 and spindles 20 according to a common program, whereby the position of the glass panes transversely to the roller tracks are clearly determined.
  • the disks must be fed in such a way that the cross stops 13 run against them and the disks in all cases have to shift something so that the position is clearly determined by stops.
  • the transverse stop 13 lies at a suitable distance outside the edge of the grinding wheel 18, so that the grinding wheel cannot come into contact with the edge of the glass wheel after the glass plates have been positioned.
  • the lifting strips 29 (FIG. 4) are raised by means of the cylinder 31, with the glass panes being raised against the turntable 23.
  • the disks are then sucked in and the lifting strips 29 are lowered again.
  • the machines are now ready to process the edges of the pane. This processing is carried out according to a common program, according to which the grinding wheel is now advanced to the edge of the glass pane, whereupon the rotation of the turntable also begins step by step according to a specific program.
  • the speed of rotation of the turntable can be programmed in such a way that the same feed or cutting performance is always achieved. This type of processing is known per se and is not the subject of the invention.
  • the grinding head is removed and the vacuum in the rotary plate 23 is released, so that the glass panes fall onto the respective roller conveyor. However, they can also be returned to the roller conveyor by means of the support strips 29. Since the longitudinal stops 12 have already been raised at the beginning of the processing, the finished processed panes are now removed, and new glass panes to be processed can be supplied practically simultaneously or shortly thereafter. The work cycle described above then begins again.
  • the stops 12 and 13 (FIGS. 1 + 3) can be set incrementally at any time in a very simple manner according to a specific program or after arbitrary inputs by means of the motors 16 or 21.
  • the control of the stop 13 is always carried out according to a predetermined program, while the stop 12 always remains in the fixed position during the processing of certain glass panes. In both cases, however, it is possible to enter corrections during the processing of certain panes, which may become necessary.
  • the attacks are thus not only in no K onflikt with the roller track, but their respective readjustment or correction can be made in an ampster way by electronic control.
  • the lifting strips 29 could be omitted if the turntable for receiving or dispensing glass panes is axially adjustable.
  • the longitudinal stops 12 can have a specific design on their front edge, which acts as a stop, which is adapted to a specific glass pane, the stop strips 12 being easily replaceably fastened to their support. It is also of particular advantage here that all machine parts are easily accessible from the side, in particular the external fastening of the longitudinal stop to its support 14. However, specially shaped stop parts or individual stop cams that can be placed on the stop bar 12 could also be provided.

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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)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

Above a roller conveyor (3) for the inward and outward transport of glass plates (11) there is arranged a cantilever arm (22), at the free end of which a carrier (14) for a locating stop (12) is adjustably arranged. An edge-grinding apparatus (10, 18, 19) is arranged longitudinally displaceably in the cantilever arm (22) and can be advanced by means of a motor (21) and a spindle (20). Arranged on the grinding head (10) is a stop (13), which serves together with the longitudinal stop (12) for positioning the glass plate during advancing of the grinding head (10) until in a stop position. The adjusting of the locating stop (12) is also performed electronically by means of a spindle and a motor. The roller conveyor serving for conveyance of the plate is consequently free from stops and can be designed optimally for plate transport, whereas the stops for plate positioning can be adjusted freely and in a simple way above the roller conveyor without being hindered by it. All the active machine parts lie freely accessibly above the roller conveyor, which assists maintenance. <IMAGE>

Description

Die vorliegende Erfindung betrifft eine Kanten-Schleifmaschine für Glasscheiben, insbesondere für Fahrzeugscheiben, mit einer Förderbahn zum Zu- und Wegführen der Scheiben in bzw. aus einer Bearbeitungsstelle, einrück- baren Anschlägen zur Bestimmung der Scheibenposition in der Bearbeitungsstelle sowie einem Drehteller zur Aufnahme und zum Drehen der Scheiben während des Schleifens mittels eines Schleifwerkzeugs.The present invention relates to an edge-grinding machine for glass sheets, particularly for vehicle windows, with a conveyor track for feeding and carrying away of the discs into and out of a processing station, on-coming - cash stops for determining the wheel position in the machining site, as well as a turntable for receiving and Rotating the discs during grinding using a grinding tool.

Eine Maschine dieser Art ist bekannt aus der EP-A 0 126 038. Die Förderbahn dieser bekannten Maschine weist in Förderrichtung laufende Förderbänder auf, welche je eine Glasscheibe an die Bearbeitungsstelle transportieren, wo die Glasscheibe gegen Anschläge geführt wird, welche ihre Position bestimmen., Die Anschläge sind unterhalb der Förderbänder fest montiert und können pneumatisch in eine wirksame Stellung angehoben werden, um eine Glasscheibe zu positionieren, und welche sich in unwirksamer, abgesenkter Stellung befinden wenn eine fertig bearbeitete Glasscheibe aus der Bearbeitungsstelle transportiert werden soll. Diese bekannte Ausführung hat verschiedene Nachteile. Jede Neueinstellung der Anschläge muss in recht aufwendiger Handarbeit erfolgen, indem die Anschläge demontiert, an die neue Stelle gebracht, wieder montiert und genau eingestellt werden müssen. Eine kontinuierliche Verstellung der Anschläge in Längsrichtung der Förderbahn ist nur möglich, wenn die Förderbahn in der erwähnten Weise aus längsverlaufenden Förderbändern aufgebaut ist, zwischen welchen die Anschläge in Längsrichtung an beliebiger Stelle angehoben werden können. Eine völlig beliebige Anordnung der Anschläge quer zur Förderbahn ist jedoch wegen der durchgehenden Förderbänder nicht möglich. Ein Ziel der vorliegenden Erfindung besteht nun darin, die Förderbahn zum Transport der Glasscheiben sowie die Einstellbarkeit der Anschläge zu vereinfachen und zu verbessern. Dieses Ziel wird dadurch erreicht, dass die Anschläge, der Drehteller und das Schleifwerkzeug an einem quer über die Förderbahn greifenden Ausleger angeordnet sind. Damit wird nun die Förderbahn frei von zusätzlichen Elementen, insbesondere von Anschlägen, und sie kann besonders einfach und zweckentsprechend, vorzugsweise als Rollenbahn ausgebildet sein. Die Anschläge können unabhängig von der Förderbahn in jeder Richtung beliebig eingestellt werden.A machine of this type is known from EP-A 0 126 038. The conveyor track of this known machine has conveyor belts running in the conveying direction, each of which transports a glass pane to the processing point, where the glass pane is guided against stops which determine its position. The stops are permanently mounted below the conveyor belts and can be pneumatically raised to an effective position to position a glass pane, and which are in an ineffective, lowered position when a finished glass pane is to be transported out of the processing point. This known embodiment has several disadvantages. Every new adjustment of the stops has to be done by hand, in that the stops have to be dismantled, moved to the new location, reassembled and precisely adjusted. A continuous adjustment of the stops in the longitudinal direction of the conveyor track is only possible if the conveyor track is constructed in the manner mentioned from longitudinal conveyor belts, between which the stops can be raised at any point in the longitudinal direction. A completely arbitrary arrangement of the stops across the conveyor track is not possible because of the continuous conveyor belts. An object of the present invention is now to simplify and improve the conveyor track for transporting the glass panes and the adjustability of the stops. This goal is achieved in that the stops, the turntable and the grinding tool are arranged on a cantilever extending across the conveyor track. The conveyor track is thus now free of additional elements, in particular of stops, and it can be designed in a particularly simple and appropriate manner, preferably as a roller conveyor. The stops can be set in any direction regardless of the conveyor track.

Es ist ein besonderes Ziel der Erfindung, die Einstellung der Anschläge dadurch erheblich zu vereinfachen und zu verbessern, dass mindestens ein durch einen Motor inkremental verstellbarer Anschlag zur Bestimmung der Scheibenposition vorhanden ist. Vorzugsweise sind jedoch mindestens zwei Anschläge in dieser Weise einstellbar, wobei ein Längsanschlag zur Bestimmung der Scheibenposition in Förderrichtung der Förderbahn als Anschlagleiste ausgebildet sein kann, während ein Queranschlag an einem Schleifkopf angebracht sein kann, welcher ohnehin mittels eines Motors inkremental zugestellt werden kann und somit auch Anschlagfunktion zur Bestimmung der Querposition der Scheibe auf der Förderbahn bzw. in der Bearbeitungsstelle übernehmen kann.It is thereby simplifying a particular object of the invention, the setting of the stops significantly and improve that at least one incrementally adjustable by a motor stop cheibenposition for determining the S is present. Preferably, however, at least two stops in this manner can be set, wherein a longitudinal stop for determining the wheel position in the conveying direction of the conveyor track may be designed as a stop bar, while a transverse stop can be attached chleifkopf on a S, may be what already sent incrementally by means of a motor and thus can also take over the stop function for determining the transverse position of the disk on the conveyor track or in the processing point.

Ein weiteres Ziel der Erfindung besteht darin, optimale Positionierungsverhältnisse für die Glasscheibe zu schaffen, indem die Anschläge so beschaffen sind, dass stets eine Dreipunktanlage der Glasscheibe erfolgt. Die Scheibe erreicht damit immer eine eindeutig bestimmte Anschlagposition.Another object of the invention is to create optimal positioning conditions for the glass pane, in that the stops are such that a three-point contact of the glass pane always takes place. The disc always reaches a clearly defined stop position.

Entsprechend der besonders genauen Positionierung der Glasscheibe in der Bearbeitungsstelle wird nach einem weiteren Ziel der Erfindung eine entsprechend genaue Bewegungssteuerung des Drehtellers bzw. der daran haftenden Glasscheibe angestrebt. Dieses Ziel wird dadurch erreicht, dass der Drehteller über ein Getriebe angetrieben ist, dessen Spiel durch ein Vorspannmoment, z.B. eines Luftmotors, aufgehoben ist. Dieses Drehmoment ist höher zu wählen als jedes in beliebiger Richtung auf die Glasscheibe wirkende Drehmoment, damit ein eventuelles Spiel im Getriebe nie zur Auswirkung gelangt.According to the particularly precise positioning of the glass pane in the processing point, after a Another object of the invention is to achieve a correspondingly precise control of the movement of the turntable or of the glass pane adhering to it. This goal is achieved in that the turntable is driven by a gear mechanism, the play of which is eliminated by a preload torque, for example an air motor. This torque should be selected higher than any torque acting on the glass pane in any direction so that any play in the gearbox never comes into play.

Die Erfindung wird nun anhand eines Ausführungsbeispiels der Kanten-Schleifmaschine näher erläutert:

  • Fig. 1 zeigt eine schematische Stirnansicht der Maschine,
  • Fig. 2 zeigt eine schematische Seitenansicht derselben,
  • Fig. 3 zeigt eine schematische Draufsicht ohne Ausleger,
  • Fig. 4 zeigt eine Stirnansicht in grösserem Massstab, teilweise im Schnitt,
  • Fig. 5 zeigt eine Draufsicht entsprechend fig. 3 in grösserem Massstab und
  • Fig. 6 zeigt eine Teil-Seitenansicht in grösserem Massstab, teilweise im Schnitt.
The invention will now be explained in more detail using an exemplary embodiment of the edge grinding machine:
  • F ig. 1 shows a schematic end view of the machine,
  • F ig. 2 shows a schematic side view of the same,
  • F ig. 3 shows a schematic top view without a boom,
  • 4 shows an end view on a larger scale, partly in section,
  • Fig. 5 shows a plan view corresponding to fig. 3 on a larger scale and
  • Fig. 6 shows a partial side view on a larger scale, partly in section.

Die dargestellte Maschine weist auf einem Maschinenbett 1, einen Maschinentisch 2 auf. Dieser Maschinentisch ist als Rollenbahn ausgebildet, wobei jede Rolle 3 über die in Fig. 5 dargestellten Getriebe 4 und Riemen 5 von einem zentralen Antrieb 6 her über Riemen 7 und 8 angetrieben werden. Wie in den Fig. 3 und 5 gezeigt, befinden sich in der Mitte des Maschinentisches zwei kürzere Rollen 3' derart, dass einseitig eine Lücke 9 in der Rollenbahn entsteht, in welche Teile eines in Fig. 2 und 5 schematisch dargestellten Schleifkopfes 10 seitlich eintreten können.The machine shown has a machine table 2 on a machine bed 1. This machine table is designed as a roller conveyor, each roller 3 being driven by a central drive 6 via belts 7 and 8 via the gears 4 and belts 5 shown in FIG. 5. As shown in FIGS. 3 and 5, there are two shorter rollers 3 'in the middle of the machine table in such a way that a gap 9 is formed on one side in the roller conveyor, into which parts one in FIGS 5 schematically illustrated grinding head 10 can enter laterally.

Wie in den Fig. 1 und 3 angedeutet, können mehrere, beispielsweise drei gleichartige Maschinen hintereinander angeordnet werden, d.h. Glasscheiben 11 können über eine Fördervorrichtung 120 sowie dann über die Rollenbahnen 3 der hintereinander angeordneten Maschinen in Richtung der Pfeile in Fig. 3 zugeführt, in den drei vorhandenen Maschinen zugleich nach ein und demselben gemeinsamen Programm bearbeitet und dann über die Rollenbahnen der Maschinen abgeführt werden.As indicated in FIGS. 1 and 3, several, for example three, similar machines can be arranged one behind the other, i.e. Glass panes 11 can be fed via a conveyor device 120 and then via the roller tracks 3 of the machines arranged one behind the other in the direction of the arrows in FIG.

Zur genauen Positionierung der einzelnen Glasscheiben 11 in jeder Maschine sind geeignete Anschläge vorgesehen und zwar einerseits eine Anschlagleiste 12 als Längsanschlag, welcher die Position der Glasscheiben in Durchlaufrichtung bzw. in Förderrichtung der Rollenbahnen bestimmt, sowie ein Queranschlag 13, der am Schleifkopf 10 angeordnet ist und die Position der Glasscheibe quer zur Rollenbahn bzw. der Förderrichtung derselben bestimmt. Die Anschlagleiste 12 ist an einem Träger 14 angebracht, der mittels einer Spindel 15 und eines Motors 16 längs einer Führung 17 in Längsrichtung bzw. Förderrichtunq der Rollenbahn 3 inkremental verstellt werden kann. Wie in Fig. 1, 2, 4 und 6 gezeigt, sind die Träger 14 und damit die Anschlagleisten 12 der drei Maschinen mittels Gestängen 14' gekuppelt, so dass nur in einer Maschine Verstellmittel 15, 16 vozusehen sind. Wie Fig. 6 zeigt, ist die Anschlagleiste 12, die parallel zu den Rollen 3 bzw. 3' steht, mit einer vertikalen Führung 12a verbunden, und sie kann mittels eines pneumatischen Zylinders 12b aus der in Fig. 6 dargestellten unwirksamen Ruhestellung in eine untere, wirksame Stellung unmittelbar über den Rollen 3 verschoben werden.For the exact positioning of the individual glass panes 11 in each machine suitable stops are provided on the one hand a stop bar 12 ängsanschlag than L, which determines the position of the glass sheets in the travel direction or in the conveying direction of the roller tracks, and a transverse stop 13 which is arranged on the grinding stone 10 and determines the position of the glass sheet transversely to the roller conveyor or the conveying direction thereof. The stop bar 12 is attached to a carrier 14 which can be incrementally adjusted by means of a spindle 15 and a motor 16 along a guide 17 in the longitudinal direction or conveying direction of the roller conveyor 3. As shown in FIGS. 1, 2, 4 and 6, the carriers 14 and thus the stop bars 12 of the three machines are coupled by means of linkages 14 ', so that adjustment means 15, 16 are only to be provided in one machine. As shown in FIG. 6, the stop bar 12, which is parallel to the rollers 3 and 3 ', is connected to a vertical guide 12a, and can be moved from the inactive inactive position shown in FIG. 6 to a lower one by means of a pneumatic cylinder 12b , effective position can be moved directly over the rollers 3.

Fig. 6 zeigt ebenfalls den Anschlagstift 13, welcher am unteren Ende des Schleifkopfes 10 mit der Schleifscheibe 18 fest angebracht ist. Ein Schlitten 10' mit dem Schleifkopf 10 mit seinem Antriebsmotor 19 kann, wie Fig. 2 zeigt, mittels einer Spindel 20 und eines Motors 21 inkremental längs eines quer über die Rollenbahn 3 ragenden Auslegers 22 verschoben werden, und zwar mit einem Hub von beispielsweise 600 mm. Die Führung 17 ist am äusseren, freien Ende des Auslegers 22 befestigt.Fig. 6 also shows the stop pin 13, which at the lower end of the grinding head 10 with the grinding wheel 18 is firmly attached. A slide 10 'with the grinding head 10 with its drive motor 19 can, as shown in FIG. 2, be moved incrementally by means of a spindle 20 and a motor 21 along a cantilever 22 projecting transversely over the roller conveyor 3, with a stroke of, for example, 600 mm. The guide 17 is attached to the outer, free end of the boom 22.

In zentraler Lage über der Rollenbahn 3 ist ein vertikal-achsiger Drehteller 23 gelagert, welcher über ein Getriebe 24 mittels eines Motors 25 inkremental angetrieben werden kann. Der Motor 25 und das Getriebe 24 sind beispielsweise so ausgelegt, dass der Drehteller 23 pro Schritt des Motors 25 um ein tausendstel Grad verdreht wird. Der Drehteller 23 ist mit einer pneumatischen Saugvorrichtung zur Aufnahme von Glasscheiben 11 versehen. Ueber einen Zahnriemen 26 und ein Getriebe 27 kann mittels eines pneumatischen Motors 28 dauernd ein gewisses Drehmoment in bestimmter Richtung auf den Drehteller 23 ausgeübt werden. Dieses Drehmoment muss, grösser sein als jedes durch die Schnittkraft der Schleifscheibe 18 auf die Glasscheibe 11 ausgeübte Drehmoment, damit die Verzahnungen des Getriebes 24 stets im gleichen Sinne spielfrei in Eingriff bleiben. Es können daher keine Fehler infolge von Flankenspiel im Getriebe 24 auftreten.In a central position above the roller conveyor 3, a vertical-axis turntable 23 is mounted, which can be driven incrementally via a gear 24 by means of a motor 25. The motor 25 and the gear 24 are designed, for example, in such a way that the turntable 23 is rotated by one thousandth of a degree for each step of the motor 25. The turntable 23 is provided with a pneumatic suction device for receiving glass panes 11. A certain torque can be continuously exerted on the turntable 23 in a certain direction by means of a pneumatic motor 28 via a toothed belt 26 and a transmission 27. This torque must be greater than any torque exerted on the glass plate 11 by the cutting force of the grinding wheel 18, so that the toothings of the gear 24 always remain in the same way without play. There can therefore be no errors due to backlash in the gear 24.

Wie Fig. 4 zeigt, sind symmetrisch zum Drehteller 23 zwischen Rollen 3 bzw. 3' Hubleisten 29 angeordnet, die auf einen Tragrahmen 30 abgestützt sind, der mittels eines pneumatischen Zylinders 31 aus der dargestellten Ruhestellung bei welcher die Hubleisten 29 etwas unter der oberen horizontalen Tangentialebene an die Rollen 3 liegen, angehoben werden, um eine auf den Rollen 3 aufliegende Glasscheibe gegen den Drehteller 23 anzuheben. Wie Fig. 5 zeigt, sind auch die Hubleisten 29 verschieden lang ausgeführt, um dem Schleifkopf 10 das Eindringen quer zur Rollenbahn bis in unmittelbare Nähe des Drehtellers 23 zu erlauben (Fig. 6). Es wird damit möglich, Glasscheiben sehr unterschiedlicher Grössen zu bearbeiten. Bei einer ausgeführten Maschine können kleinste Scheiben von 0,3 x 0,3 m und grösste Scheiben von 1,2 m Breite und 0,8 m Länge bezogen auf die Durchlaufrichtung der Glasscheiben bearbeitet werden.As shown in FIG. 4, lifting bars 29 are arranged symmetrically with respect to the turntable 23 between rollers 3 and 3 ', which are supported on a supporting frame 30, which by means of a pneumatic cylinder 31 from the rest position shown in which the lifting bars 29 are somewhat below the upper horizontal Tangent plane to the rollers 3 are raised to raise a glass disc resting on the rollers 3 against the turntable 23. As shown in FIG. 5, the lifting strips 29 are also of different lengths in order to penetrate the grinding head 10 to allow gene across the roller conveyor in the immediate vicinity of the turntable 23 (Fig. 6). This makes it possible to process glass panes of very different sizes. The smallest panes of 0.3 x 0.3 m and the largest panes of 1.2 m wide and 0.8 m long can be machined in relation to the direction in which the glass panes run.

Die Arbeitsweise der Maschine ergibt sich weitgehend schon aus der vorstehenden Beschreibung. Wie erwähnt, werden unbearbeitete Glasscheiben 11 gemäss Fig. 3 in bestimmten Abständen zugeführt, wobei diese Abstände ziemlich genau dem gegenseitigen Abstand der drei in Serie angeordneten Maschinen entsprechen. Kurz bevor je drei zugeführte Glasscheiben in die Bearbeitungsstellung gelangen, werden die Längsanschläge 12 der drei Maschinen gleichzeitig abgesenkt und positionieren die drei zugeführten Glasscheiben in Längsrichtung. Die Vorderkante der Anschlagleisten 12 gegen welche die Scheiben anlaufen bzw. die Ränder dieser Scheiben, welche gegen die Leiste anschlagen, sind so gestaltet, dass eine Zweipunktauflage entsteht, derart dass die Scheiben in eindeutig definierter Lage an den Leisten 12 anliegen. Während des Zuführens der Glasscheiben 11 befindet sich der Schleifkopf 10 in etwas zurückgezogener Stellung, d.h. also in einer gegenüber der Stellung nach Fig. 3 etwas nach oben verschobenen Stellung damit die Glasscheiben frei neben den Anschlägen 13 eintreten können. Nachdem die Glasscheiben gegen die Längsanschläge 12 angelaufen sind, werden nun nach gemeinsamem Programm die Schleifköpfe 10 bzw. die Queranschläge 13 mittels der Motoren 21 und Spindeln 20 in eine ganz bestimmte Anschlagposition vorgeschoben, womit die Position der Glasscheiben quer zu den Rollenbahnen eindeutig bestimmt werden. Selbstverständlich müssen die Scheiben so zugeführt werden, dass auf alle Fälle die Queranschläge 13 gegen sie anlaufen und die Scheiben noch etwas verschieben müssen, damit die Positon eindeutig durch Anschläge bestimmt ist. Es ergibt sich dabei eine Dreipunkt-Anlage der Glasscheiben ↑↑, womit ihre Position eindeutig bestimmt ist. Wie insbesondere Fig. 6 zeigt, liegt der Queranschlag 13 in einem angemessenen Abstand ausserhalb des Randes der Schleifscheibe 18, sodass die Schleifscheibe nach erfolgter Positionierung der Glasscheiben noch keinesfalls mit dem Rand der Glasscheibe in Berührung gelangen kann.The operation of the machine largely results from the above description. As mentioned, raw glass panes 11 according to FIG. 3 are fed in at certain intervals, these intervals corresponding almost exactly to the mutual distance of the three machines arranged in series. Shortly before three supplied glass sheets reach the processing position, the longitudinal stops 12 of the three machines are lowered simultaneously and position the three supplied glass sheets in the longitudinal direction. The front edge of the stop bars 12 against which the panes run or the edges of these disks that hit the bar are designed in such a way that a two-point support is created such that the panes rest against the bars 12 in a clearly defined position. During the feeding of the glass panes 11, the grinding head 10 is in a somewhat retracted position, that is to say in a position shifted somewhat upwards relative to the position according to FIG. 3, so that the glass panes can enter freely next to the stops 13. After the glass panes have run against the longitudinal stops 12, the grinding heads 10 or the transverse stops 13 are now advanced into a very specific stop position by means of the motors 21 and spindles 20 according to a common program, whereby the position of the glass panes transversely to the roller tracks are clearly determined. Of course, the disks must be fed in such a way that the cross stops 13 run against them and the disks in all cases have to shift something so that the position is clearly determined by stops. The result is a three-point arrangement of the glass panes ↑↑, with which their position is clearly determined. As in particular F ig. 6 shows, the transverse stop 13 lies at a suitable distance outside the edge of the grinding wheel 18, so that the grinding wheel cannot come into contact with the edge of the glass wheel after the glass plates have been positioned.

Nach erfolgter Positionierung der Glasscheiben werden nun die Hubleisten 29 (Fig. 4) mittels des Zylinders 31 angehoben, womit die Glasscheiben jeweils gegen den Drehteller 23 angehoben werden. Die Scheiben werden dann festgesaugt und die Hubleisten 29 werden wieder abgesenkt. Damit sind die Maschinen vorbereitet zur Bearbeitung der Scheibenränder. Diese Bearbeitung erfolgt nach einem gemeinsamen Programm, gemäss welchem nun vorerst die Schleifscheibe an den Rand der Glasscheibe zuge- stellt wird, worauf die Drehung des Drehtellers ebenfalls nach bestimmten Programm schrittweise einsetzt. Die Drehgeschwindigkeit des Drehtellers kann dabei derart programmiert sein, dass stets etwa derselbe Vorschub bzw. dieselbe Schnittleistung erzielt wird. Diese Art der Bearbeitung ist an sich bekannt und bildet nicht Gegenstand der Erfindung. Ist der ganze Scheibenrand bearbeitet, wird der Schleifkopf entfernt und das Vakuum im Drehteller 23 wird aufgehoben, sodass die Glasscheiben auf die jeweilige Rollenbahn fallen. Sie können jedoch auch mittels der Stütztleisten 29 auf die Rollenbahn zurückgeführt werden. Da schon zu Beginn der Bearbeitung die Längsanschläge 12 angehoben worden sind, werden nun die fertig bearbeiteten Scheiben abgeführt, und es können praktisch gleichzeitig oder kurz darauf neue zu bearbeitende Glasscheiben zugeführt werden. Es beginnt dann wieder der oben beschriebene Arbeitszyklus. Die Einstellung der Anschläge 12 und 13 (Fig. 1 + 3) kann jederzeit in sehr einfacher Weise nach bestimmtem Programm oder nach willkürlichen Eingaben inkremental mittels der Motoren 16 oder 21 erfolgen. Die Steuerung des Anschlags 13 erfolgt ohnehin stets nach vorgegebenem Programm, während der Anschlag 12 während der Bearbeitung bestimmter Glasscheiben stets in der fest eingestellten Lage bleibt. Es ist jedoch in beiden Fällen möglich, während der Bearbeitung bestimmter Scheiben Korrekturen einzugeben, welche sich gegebenenfalls aufdrängen können. Die Anschläge stehen somit nicht nur in keinem Konflikt mit der Rollenbahn, sondern ihre jeweilige Neueinstellung oder Korrektur kann in einfachster Weise durch elektronische Steuerung erfolgen.After the glass panes have been positioned, the lifting strips 29 (FIG. 4) are raised by means of the cylinder 31, with the glass panes being raised against the turntable 23. The disks are then sucked in and the lifting strips 29 are lowered again. The machines are now ready to process the edges of the pane. This processing is carried out according to a common program, according to which the grinding wheel is now advanced to the edge of the glass pane, whereupon the rotation of the turntable also begins step by step according to a specific program. The speed of rotation of the turntable can be programmed in such a way that the same feed or cutting performance is always achieved. This type of processing is known per se and is not the subject of the invention. Once the entire edge of the disc has been machined, the grinding head is removed and the vacuum in the rotary plate 23 is released, so that the glass panes fall onto the respective roller conveyor. However, they can also be returned to the roller conveyor by means of the support strips 29. Since the longitudinal stops 12 have already been raised at the beginning of the processing, the finished processed panes are now removed, and new glass panes to be processed can be supplied practically simultaneously or shortly thereafter. The work cycle described above then begins again. The stops 12 and 13 (FIGS. 1 + 3) can be set incrementally at any time in a very simple manner according to a specific program or after arbitrary inputs by means of the motors 16 or 21. The control of the stop 13 is always carried out according to a predetermined program, while the stop 12 always remains in the fixed position during the processing of certain glass panes. In both cases, however, it is possible to enter corrections during the processing of certain panes, which may become necessary. The attacks are thus not only in no K onflikt with the roller track, but their respective readjustment or correction can be made in einfachster way by electronic control.

Gewisse Einzelheiten können anders ausgeführt sein als beim dargestellten Ausführungsbeispiel. So könnten beispielweise die Hubleisten 29 wegfallen, wenn der Drehteller zur Aufnahme bzw. Abgabe von Glasscheiben axial verstellbar ist. Wie schon erwähnt, können die Längsanschläge 12 an ihrer als Anschlag wirkenden Vorderkante eine bestimmte Gestaltung aufweisen, die einer bestimmten Glasscheibe angepasst ist, wobei die Anschlagleisten 12 leicht auswechselbar an ihrem Träger befestigt sein können. Hierbei ist es auch von besonderem Vorteil, dass alle Maschinenteile von der Seite leicht zugänglich sind, insbesondere die aussenliegende Befestigung des Längsanschlages an seinem Träger 14. Es könnten aber auch auf die Anschlagleiste 12 aufsetzbare, besonders geformte Anschlagteile oder einzelne Anschlagnocken vorgesehen sein.Certain details can be executed differently than in the illustrated embodiment. For example, the lifting strips 29 could be omitted if the turntable for receiving or dispensing glass panes is axially adjustable. As already mentioned, the longitudinal stops 12 can have a specific design on their front edge, which acts as a stop, which is adapted to a specific glass pane, the stop strips 12 being easily replaceably fastened to their support. It is also of particular advantage here that all machine parts are easily accessible from the side, in particular the external fastening of the longitudinal stop to its support 14. However, specially shaped stop parts or individual stop cams that can be placed on the stop bar 12 could also be provided.

Claims (11)

1) Kanten-Schleifmaschine für Glasscheiben (11), insbesondere für Fahrzeugscheiben, mit einer Förderbahn (3) zum Zu- und Wegführen der Scheiben in bzw. aus einer Bearbeitungsstelle, einrückbaren Anschlägen (12, 13) zur Bestimmung der Scheibenposition in der Bearbeitungsstelle sowie einem Drehteller (23) zur Aufnahme und zum Drehen der Scheiben (11) während des Schleifens mittels eines Schleifwerkzeuges (i8), dadurch gekennzeichnet, dass die Anschläge (12, 13), der Drehteller (23) und das Schleifwerkzeug (18) an einem quer über die Förderbahn (3) greifenden Ausleger (22) angeordnet sind.1) Edge grinding machine for glass panes (11), in particular for vehicle panes, with a conveyor track (3) for feeding the panes in and out of a processing point, engaging stops (12, 13) for determining the pane position in the processing point and a turntable (23) for receiving and rotating the discs (11) during grinding by means of a grinding tool (i8), characterized in that the stops (12, 13), the rotating plate (23) and the grinding tool (18) on one cantilevers (22) are arranged across the conveyor track (3). 2) Maschine, insbesondere nach Anspruch 1, dadurch gekennzeichnet, dass das Schleifwerkzeug, z.B. eine Schleifscheibe (18), längs des Auslegers (22) zustellbar ist.2) Machine, in particular according to claim 1, characterized in that the grinding tool, e.g. a grinding wheel (18) can be advanced along the arm (22). 3) Maschine, insbesondere nach Anspruch 2, dadurch gekennzeichnet, dass an dem des Schleifwerkzeugs (18) tragenden Schleifkopf (10) ein Queranschlag (13) angeordnet ist, der zur Bestimmung der Scheibenposition in Richtung quer zur Förderbahn (3) bestimmt ist.3) Machine, in particular according to claim 2, characterized in that a transverse stop (13) is arranged on the grinding head (10) carrying the grinding tool (18) and is intended for determining the wheel position in the direction transverse to the conveyor track (3). 4) Maschine nach Anspruch 3, dadurch gekennzeichnet, dass der Queranschlag (13) unterhalb der Ebene einer Schleifscheibe (18) angeordnet ist, und dass Steuermittel vorgesehen sind, welche bei lose auf der Förderbahn (3) liegender Scheibe (11) den Schleifkopf (10) und damit den Queranschlag in eine Anschlagsposition zustellen, und dann die Schleifscheibe (18) in ihre Bearbeitungsstellung am Scheibenrand zustellen.4) Machine according to claim 3, characterized in that the transverse stop (13) is arranged below the plane of a grinding wheel (18), and that control means are provided which, when the wheel (11) lies loosely on the conveyor track (3), the grinding head ( 10) and thus move the cross stop to a stop position, and then move the grinding wheel (18) to its machining position on the wheel edge. 5) Maschine, insbesondere nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass mindestens ein Längsanschlag (12) zur Bestimmung der Scheibenposition in Richtung der Förderbahn (3) vorgesehen ist.5) machine, in particular according to one of claims 1 to 4, (12) is provided for determining the plate position in the direction of the conveyor track (3), characterized in that at least one L ängsanschlag. 6) Maschine nach Anspruch 5, dadurch gekennzeichnet, dass der Längsanschlag (12) als quer zur Förderbahn (3) stehende Leiste ausgebildet ist. 6 ) Machine according to claim 5, characterized in that the longitudinal stop (12) is designed as a bar which is transverse to the conveyor track (3). 7) Maschine nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Längsanschlag (12) in Richtung der Förderbahn (3) einstellbar ist.7) Machine according to claim 5 or 6, characterized in that the longitudinal stop (12) in the direction of the conveyor track (3) is adjustable. 8) Maschine nach einem der Ansprüche 1 bis 7, wobei die Förderbahn als Rollenbahn (3) ausgebildet ist, dadurch gekennzeichnet, dass die Förderbahn (3) im Be-reiche des Auslegers (22) einseitig verkürzte Rollen (3') aufweist, wodurch eine rollenfreie Lücke (9) entsteht, in welche Teile des Schleifkopfes (10) eintreten können.8) Machine according to one of claims 1 to 7, wherein the conveyor track is designed as roller conveyor (3), characterized in that the conveyor track (3) in B e-rich of the boom (22) on one side shorter rollers (3 '), comprising which creates a role-free gap (9) into which parts of the grinding head (10) can enter. 9) Maschine, insbesondere nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Drehteller (23) über ein Getriebe (24) angetrieben ist, dessen Spiel durch ein Vorspannmoment, z.B. eines Luftmotors (28), aufgehoben ist.9) Machine, in particular according to one of claims 1 to 8, characterized in that the turntable (23) is driven by a gear (24), the play of which by a biasing moment, e.g. an air motor (28) is canceled. 10) Maschine, insbesondere nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass mindestens ein durch einen Motor (16, 21) inkremental verstellbarer Anschlag (12, 13) zur Bestimmung der Scheibenposition vorhanden ist.10) Machine, in particular according to one of claims 1 to 9, characterized in that there is at least one stop (12, 13) incrementally adjustable by a motor (16, 21) for determining the disc position. 11) Maschine, insbesondere nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass Anschläge (12, 13) vorhanden sind, die eine Dreipunktanlage der Scheibe (11) bewirken.11) Machine, in particular according to one of claims 1 to 10, characterized in that stops (12, 13) are present which bring about a three-point contact of the disc (11).
EP87810377A 1986-07-23 1987-07-01 Edge-grinding machine for plate glass Withdrawn EP0255476A1 (en)

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CH2953/86 1986-07-23
CH295386 1986-07-23

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EP0333693A2 (en) * 1988-03-14 1989-09-20 Peter Lisec Device for sheathing distance-keeper frames
AU625449B2 (en) * 1990-10-23 1992-07-09 Glass Engineering Pty. Ltd. An apparatus for grinding glass
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CN102729119A (en) * 2012-06-14 2012-10-17 张家港市恒久玻璃机械有限公司 Grooving machine for glass
CN102775053A (en) * 2012-08-01 2012-11-14 中国南玻集团股份有限公司 Glass deep processing control system
CN109015192A (en) * 2018-09-17 2018-12-18 安徽新合富力科技有限公司 A kind of tablet computer external screen glass production edging device and its production method
WO2019091820A1 (en) 2017-11-09 2019-05-16 Bystronic Maschinen Ag Method for machining a glass pane

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Publication number Priority date Publication date Assignee Title
EP0333693A2 (en) * 1988-03-14 1989-09-20 Peter Lisec Device for sheathing distance-keeper frames
EP0333693A3 (en) * 1988-03-14 1990-05-02 Peter Lisec Device for sheathing distance-keeper frames
US4949666A (en) * 1988-03-14 1990-08-21 Peter Lisec Apparatus for the handling of spacer frames
AU625449B2 (en) * 1990-10-23 1992-07-09 Glass Engineering Pty. Ltd. An apparatus for grinding glass
EP0642885A1 (en) * 1993-09-13 1995-03-15 AISA S.p.A. Automatic machine for the production of rounded bevels at the corners of flat sheets
CN102632448A (en) * 2012-04-23 2012-08-15 广东亿海机械制造有限公司 Glass grinding wheel adjusting device
CN102729119A (en) * 2012-06-14 2012-10-17 张家港市恒久玻璃机械有限公司 Grooving machine for glass
CN102775053A (en) * 2012-08-01 2012-11-14 中国南玻集团股份有限公司 Glass deep processing control system
CN102775053B (en) * 2012-08-01 2014-07-16 中国南玻集团股份有限公司 Glass deep processing control system
WO2019091820A1 (en) 2017-11-09 2019-05-16 Bystronic Maschinen Ag Method for machining a glass pane
CN109015192A (en) * 2018-09-17 2018-12-18 安徽新合富力科技有限公司 A kind of tablet computer external screen glass production edging device and its production method

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