EP0539407B1 - Process and device for assembling insulating glass panes filled with a gas other than air - Google Patents

Process and device for assembling insulating glass panes filled with a gas other than air Download PDF

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Publication number
EP0539407B1
EP0539407B1 EP91912375A EP91912375A EP0539407B1 EP 0539407 B1 EP0539407 B1 EP 0539407B1 EP 91912375 A EP91912375 A EP 91912375A EP 91912375 A EP91912375 A EP 91912375A EP 0539407 B1 EP0539407 B1 EP 0539407B1
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EP
European Patent Office
Prior art keywords
glass plate
glass
glass plates
gas
interior space
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.)
Expired - Lifetime
Application number
EP91912375A
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German (de)
French (fr)
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EP0539407A1 (en
Inventor
Karl Lenhardt
Uwe Bogner
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Bystronic Lenhardt GmbH
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Bystronic Lenhardt GmbH
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    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775Evacuating or filling the gap during assembly
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673Assembling the units
    • E06B3/67365Transporting or handling panes, spacer frames or units during assembly
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673Assembling the units
    • E06B3/67365Transporting or handling panes, spacer frames or units during assembly
    • E06B3/67386Presses; Clamping means holding the panes during assembly
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702For plural parts or plural areas of single part
    • Y10T156/1744Means bringing discrete articles into assembled relationship

Definitions

  • the known device in the case of two glass plates joined together to form an insulating glass pane, access to the interior space between the glass plates is temporarily created in that one of the glass plates is elastically bent before or after the glass plates are joined together.
  • the known device has suction cups which are arranged in a vertical, strip-shaped recess in a wall and up to The front of the wall can be pushed forward and retracted parallel to itself by a few millimeters behind the front of the wall.
  • the wall itself has holes regularly distributed over its surface, through which air can also be sucked in to hold and position the glass plate on the wall.
  • the glass plate sucked in through the holes in the wall and thus clamped on both sides is dented in a strip-shaped area by the action of the suction cups in the strip-shaped recess of the wall, high bending stresses occurring in the glass because the glass plate in the bending area exhibits several changes in the sign of the curvature.
  • the high bending stress means that thick glass plates are difficult to bend and that microcracks in the glass plate, which would not appear without bending the glass plate, can cause the glass plate to break due to the bending.
  • a local alleviation of the stresses can be achieved in that the wall has a curved surface in a region adjacent to the recess on both sides, which creates a continuous transition from the flat region of the wall into its recess. This allows the amount of curvature at the edge of the recess to be reduced, but it remains that the glass sheet has a multiple change in the sign of the curvature.
  • the present invention has for its object to provide a method and an apparatus with which glass plates can be bent when assembling insulating glass panes with less effort and with the formation of lower bending stresses in the glass in order to provide access to the interior of the insulating glass pane through which a gas other than air can be filled.
  • the reduced bending stresses are primarily intended to reduce the risk of breakage and to facilitate the bending of thick glass plates.
  • the method according to claim 2 differs from the method according to claim 1 only in the order of the steps: while in the method according to claim 1 the glass plate bending takes place before the glass plates are joined, in the method according to claim 2 the glass plate bending takes place after the glass plates are joined were, that is, the glass plates are only put together by interposing a spacer and subsequently a glass sheet is bent again, causing them to separate from the spacer in sections solves again.
  • the glass plate to be bent is bent together with the positioning surface touching it.
  • the glass plate is not bent in a central area, but along one of its edges parallel to this edge, it is achieved that the glass plate on its outer surface in the bending area is only concave, so that the sign of the curvature no longer changes .
  • a major contributor to this success is that there is no kink in the positioning surface against which the glass plate is in contact during bending, because the positioning surface is bent together with the glass sheet, which means that the positioning surface and the glass plate also nestle against each other in the bending area.
  • the method according to the invention can be carried out in a conventional insulating glass production line which can only be adapted with relatively little effort in the area of the assembly station. Insulating glass panes with heavy gas filling and also such can be in the same production line in any order be made with air filling.
  • spacers that are flexible enough to be bent together with a glass plate; however, the glass plate is preferably bent before it is connected to the spacer, so that it is not important for creating access to the interior of the insulating glass pane whether and to what extent the respective spacer can be bent.
  • This procedure is particularly recommended for the production of insulating glass glued to the edge, which is produced with the help of spacers which consist of metallic hollow profile bars and are provided on their two flanks with an adhesive, with the aid of which they glue the two glass plates together.
  • spacers which consist of metallic hollow profile bars and are provided on their two flanks with an adhesive, with the aid of which they glue the two glass plates together.
  • the associated increased effort is not necessary. Rather, it is enough to bend just one of the glass plates.
  • the two glass plates to be assembled to form the insulating glass pane are positioned and joined parallel to one another in a congruent manner, one or both glass plates, preferably only one of the glass plates, being bent at the edge according to the invention, so that a heavy gas can be filled.
  • the bend is removed and the glass plates are glued to the entire circumference with the spacer.
  • the device has a support device for one of the glass plates and a holder for the other glass plate which is parallel and variable in distance therefrom. Insulating glass panes are either assembled horizontally or upright, in the latter case usually a little inclined.
  • the support device can be a roller field known per se in this field of technology; it is preferably an air cushion wall on which a glass plate can float on an air cushion and can be fixed by switching from bubbles to suction.
  • the holder could be a frame with brackets that grip the glass plate at the edge and with positioning elements that define a positioning surface.
  • the holder like the support device, is also a wall, in particular one with bores through which air can be sucked in, in order to be able to suck in a glass plate and hold and position it on the wall.
  • One of these two walls which both form a positioning surface for a glass sheet, is combined with an elongated suction device, which lies with its front in an area of the positioning surface that can be deflected elastically. Whether this area for the support device or for mounting heard is a question of expediency.
  • the elastically deflectable area is preferably located at the edge of the holder or the support device, so that the holder or support device ends with this deflectable area.
  • the deflectable area could also lie in the middle of a larger support device or holder; in this case, however, the glass plate to be bent is positioned such that it only rests on the elastically deflectable area and that area of the positioning surface adjoining it on which the deflectable area is clamped on one side.
  • the elongated suction device preferably contains a number of several suction devices, which are arranged directly adjacent to one another and can be activated individually in order to be able to optimally generate the suction force for bending and to adapt it to the size of the respective glass plate.
  • the row of suction cups preferably extends at right angles to the conveying direction, so that the glass sheet to be bent is longitudinal one of its edges running from bottom to top is bent, preferably along the edge lying in front in the conveying direction.
  • an elongated one for filling the gas and for displacing the gas-air mixture between the spacer and a glass plate If the opening is found, it is advantageous to use a nozzle with an elongated mouth to fill the gas, which is brought to the edge of the glass plates or on the edge of a glass plate and on the spacer and sealed in a suitable manner, so that maximum efficiency is achieved.
  • the displaced gas-air mixture can be sucked off through a suction nozzle, which can also be placed on the edge of the glass plate or on the edge of a glass plate and on the spacer.
  • a cover element is provided between the area of the filling nozzle and the area in which the displaced gas-air mixture flows out in order to avoid gas losses.
  • the filling nozzle and the suction nozzle are preferably integrated into a common cover element which covers the edge of the insulating glass pane along the entire edge, along which the bend takes place.
  • This cover element preferably contains - starting in the vicinity of the filling nozzle - a series of suction openings which can be activated individually or in groups. This makes it possible, even with insulating glass panes of different sizes, to have the suction carried out only through a suction opening or through a group of suction openings which is outside the edge of the insulating glass pane, but nevertheless near its corner.
  • the suction device preferably comprises a sheet which is clamped on one side at the outlet-side end of the holder and provided with suction openings and which carries a layer of an elastomeric material on its front side.
  • a sheet has the desired bendability, and the elastomeric layer provided for sealing the nipple and gentle application to the glass surface can be easily bent.
  • the bending can be done by a pulling and / or pushing device which acts on the back of the sheet, preferably in the immediate vicinity of the edge of the sheet on the outlet side.
  • the thrust and / or pressure device should preferably be attacked in an articulated manner in order to avoid distortion of the bending lines due to a rigid attack.
  • the material and the thickness of the sheet are expediently chosen so that their bending behavior is matched to that of the glass plate and both can be bent with the same possible curvature. Experience has shown that you can achieve very good results with a 4 to 5 mm thick steel sheet.
  • Figures 1 and 2 show that the device has a base 1 and thereon a base 2, which carries a horizontally conveying conveyor, which is formed by a sequence of synchronously driven rollers 3.
  • a support 4 is arranged between two adjacent rollers 3; the sequence of the supports 4 is arranged on a walking beam 5, which is adjustable up and down, so that the supports 4 between a position in which they protrude above the rollers 3 and a position in which they are below the top of the Rollers 3 are sunk, can be moved back and forth.
  • the rollers 3 there is a support wall 6, which is based on the one hand on the base 2 and on the other hand is supported by struts 7 and 8, which are based on the base frame 1, in a position inclined to the rear by approximately 6 ° with respect to the vertical.
  • the support wall 6 is designed as an air cushion wall, i.e. it consists of a plate 9 in which a number of bores are distributed, to which compressed air is supplied by a blower 10 via a line 11.
  • the front of the support wall 6 forms a first positioning surface 28 for a glass plate 40 and 42.
  • the rods 12 carry at their front end a holder 14 to which a frame is fastened with a wall 15 which runs parallel to the support wall 6 and whose distance from the support wall 6 can be changed by actuating the pressure medium cylinders 13.
  • the wall 15 is also designed as an air cushion wall and is therefore supplied with compressed air by the fan 10 through a further line 17.
  • the support wall 6 it has a number of bores 35 distributed over its surface through which the blower air can escape or be sucked in. Its front forms a second positioning surface for a glass plate 40.
  • a further walking beam 18 with a number of supports 19 is arranged below the wall 15.
  • a strip-shaped suction device 20 which extends from the lower edge to the upper edge of the wall 15 and which consists of a series of suction devices 21 arranged one above the other, which is connected via pipes 22 and 23 a suction unit, not shown, are connected and can be activated individually or in groups.
  • a cover element 26 is provided, which can be moved into the conveying path of an insulating glass pane and out of the conveying path.
  • the suction device 20 comprises a sheet 50, in particular a 4 to 5 mm thick steel sheet, which adjoins the outlet-side edge of the wall 15 provided with bores, which holds the glass plate 40 to be bent by suction.
  • the sheet 50 extends from the lower corner to the upper corner of the wall 15, which is rigidly connected at its outlet-side edge to a metal plate 51, the front of which is set back from the front of the wall 14.
  • the sheet 50 is firmly connected to the front of the metal plate 51 and projects in the conveying direction 25 beyond the metal plate 51; in this way, the sheet 50 is attached to the outlet-side edge of the wall 14 by one-sided clamping.
  • the sheet 50 can be deflected transversely to its surface by elastic bending.
  • a plate 53 is articulated on the outlet-side edge of the sheet 50 by means of a hinge 52, which is connected to another plate 56 on the back by struts 54 and 55, which run at right angles to the surface of the plate 53, so that the plates 53 and 56 with the struts 54 and 55 form a frame which can be moved back and forth parallel to itself and to the front surface of the wall 15.
  • the parallel guidance of the frame is ensured by a four-bar linkage, which is established by the clamping point of the sheet 50 on the metal plate 51, by the hinge 52 and by two joints 57 and 58 arranged at a suitable distance behind the plate 56 guaranteed, of which the hinge 57 is fixed to the plate 56 and the hinge 58 is firmly connected to the base frame of the wall 15, the two joints 57 and 58 being connected to one another by a link 60.
  • the mechanism for moving the frame 53 to 56 comprises two inflatable tubes 61 and 62.
  • the tube 61 is arranged between the plate 53 and the front of a column 63 extending between the plates 53 and 56, which belongs to the base frame 59 and is thus fixed to the frame.
  • the hose 62 is arranged between the plate 56 and the rear of the column 63.
  • the plate 53 is pulled back until it abuts the base frame 59 with an adjustable stop 64. With the plate 53, the edge of the sheet 50 on the outlet side moves back, which is thereby bent (FIG. 3). If both hoses 61 and 62 are vented, the sheet metal 50 returns to its initial position by elastic springback, in which it lies with the coated front side in alignment with the positioning surface 29. If the front tube 61 is additionally inflated, the sheet 50 is stabilized in its position, whereby adjustable stops 65 provided on the rear plate 56, which abut the base frame 59, ensure that the suction device 20 does not extend beyond the positioning surface 29 with its front side is advanced.
  • the front of the sheet 50 is provided with a layer 66 made of an elastomeric material, in particular rubber (see FIG. 5), strip-shaped, compressible seals, e.g. made of foam rubber, in which layer 66 are embedded.
  • strip-shaped seals 67 give each suction cup a rectangular outline shape, in the middle of which there is a suction opening 68 (FIG. 2).
  • the strip-shaped seals 67 protrude from the front of the layer 66 and are compressed when a glass plate 40 is sucked in.
  • a glass plate 40 sucked thereon is also bent, as a result of which a gap-shaped opening 43 is formed in an insulating glass pane 44, which is located between the air cushion wall 6 and the wall 15, and lies at the outlet-side edge of the insulating glass pane 44 (see FIGS. 3 and 4) and 5).
  • a gas other than air in particular a heavy gas, is to be blown into the interior of the insulating glass pane and the air is to be displaced from the interior.
  • a nozzle 31 is provided, which is brought into contact in the vicinity of the lower corner of the insulating glass pane 44 on its outlet-side edge.
  • the nozzle 31 is located on an elongated angle rail 32, which is used to cover the entire outlet-side edge of the insulating glass pane 44 and above the nozzle 31 in a regular manner Spacing contains a number of suction nozzles 33 (see Figures 1 and 8).
  • the front of the angle rail 32 is covered with a seal 34, which is brought into contact on the one hand on the outlet-side edge of the sheet 50 and on the other hand on the outlet-side edge of the air cushion wall 6.
  • a short cover strip 27 is pivotally provided on the angle rail 32, which carries on its upper side a strip-shaped seal 36 which is intended to rest against the lower edge of the insulating glass pane 44 (see FIGS. 2 and 7). This is intended to seal the wedge-shaped gap that forms at the lower edge when the glass plate 40 is bent. So that the filled gas does not flow along the spacer 41 through the edge joint 45 of the insulating glass pane at this point, a brush 38 is also provided at the end of the cover strip 27, the bristles of which plunge into the edge joint when the cover strip 27 contacts the lower edge of the insulating glass pane 44 is created.
  • a pressure medium cylinder 39 is provided for pivoting the cover strip 27.
  • pressure medium cylinders 46 are provided which act on the angle rail 32 in order to move it back and forth (see FIGS. 3 and 4), with links 47 and 48, which are articulated on the pressure medium cylinder 46 or on the angle rail 32, ensuring synchronism of the angle rail during the forward and backward movement.
  • the pressure medium cylinders 46 are in turn displaceable in the conveying direction and counter to the conveying direction 25 by one or two pressure medium cylinders 49 which are attached to the base frame 59.
  • the nozzle 31 for supplying the gas is provided with a flat, elongated mouth through which a correspondingly flat jet can be directed into the interior of the pane.
  • Figure 6 shows the nozzle in the system on a very small insulating glass pane. The height of the nozzle opening should be less than the height of the smallest insulating glass pane to be processed.
  • the device works as follows:
  • the glass plate 40 is conveyed to the outlet-side edge of the support wall 6 and stopped flush with the edge thereof.
  • the walking beam 3 is moved upwards, thereby lifting the glass plate 40 from the rollers 3.
  • the wall 15 of the glass plate 40 is approximated.
  • the angle rail 32 which is attached to the end of the piston rod 46a of the pressure medium cylinder 46 and has previously been advanced, is carried along until it meets a fixed stop (not shown) attached to the base frame 1.
  • the piston rod 46a With further forward movement of the wall 15, the piston rod 46a is pushed into the pressure medium cylinder 46 until the wall 15 meets the glass plate 40. In this position, which is a measure of the thickness of the glass plate 40, the piston rod 46a is locked in the pressure medium cylinder 46.
  • the glass plate 40 is sucked in by sucking air through the holes 35 in the wall 15, and is moved back together with the wall 15 on which it hangs and is supported at the lower edge by the supports 19 which have meanwhile been raised. Simultaneously with the suction through the bores 35, but now at the latest, e.g. controlled by a sensor that determines the height of the glass plate 40, activates those suction devices 21 that are completely covered by the glass plate 40: they additionally suck the glass plate 40. If the suction cups 21 have sucked onto the outer surface of the glass plate 40, the sheet 50 on which they are formed is bent away from the supporting wall 6 and causes the glass plate 40 to bend in the same way.
  • the wall 15 is brought closer to the wall 6 until the glass plate 40 (in the language of the claims it is the "second" glass plate) comes to rest on the spacer 41.
  • the space between the two glass plates 40 and 42 is closed except for a gap-shaped opening 43 along the outlet-side edge of the glass plate 40.
  • the cover element 26 is now brought into contact with the outlet-side edge of the insulating glass pane (FIG. 3) and then by actuating the pressure medium cylinder 39, the cover strip 27 is brought into contact with the lower edge of the insulating glass pane 44.
  • the locking of the piston rod 46a ensures that the one edge bead of the seal 34 always hits the edge of the sheet 50 in the same position, regardless of the thickness of the glass plate 40.
  • the gas is introduced through the nozzle 31 into the insulating glass pane 44, which displaces the air therein upwards.
  • the first suction nozzle 33 which lies above the insulating glass pane, is activated; it sucks off at least part of the displaced air or the displaced air-gas mixture and directs it to a sensor, not shown, which detects the residual oxygen content in the extracted air-gas mixture.
  • the gas filling process is started ended and the insulating glass pane closed by depressurizing the suction device 20 (then the glass plate 40 springs against the spacer 41 and closes the insulating glass pane very quickly) or by depressurizing the rear tube 62 (then the glass plate 40 springs somewhat more gently against the spacer 41).
  • the insulating glass pane 44 can then be pressed in the device, as a result of which the adhesive connection between the spacer 41 and the two glass plates 40 and 42 becomes gas-tight and the insulating glass pane assumes its desired thickness.
  • the wall 15 and with it the suction device attached to it are pulled through the pressure medium cylinders 13 against the supporting wall 6. So that the flexible suction device 20 cannot avoid the pressing pressure, the hose 61 is simultaneously inflated to support the suction device 20 from the rear.
  • the cover element 26 is no longer required in this phase; it is moved out of the conveying path by swiveling down the cover strip 27 and by a combined movement in the conveying direction and transversely to the conveying direction, as shown in FIG. 4.
  • the wall 15 is removed from the supporting wall 6 again, the supports 4 and 19 are lowered and the insulating glass pane 44 is conveyed standing on the rollers 3 and leaning against the air cushion wall 6.
  • the method according to the invention and the devices according to the invention are intended and suitable for the production of insulating glass panes.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PCT No. PCT/EP91/01307 Sec. 371 Date Jan. 20, 1993 Sec. 102(e) Date Jan. 20, 1993 PCT Filed Jul. 12, 1991 PCT Pub. No. WO92/01137 PCT Pub. Date Jan. 23, 1992.To fill insulating glass panes with a heavy gas, one of the glass plates (40) of which the insulating glass pane is formed is initially only partly joined to the other glass plate (42) during assembly and to that end is flexed along one edge so that a gap is temporarily left between the glass plate (40) and the spacer (41) and a heavy gas can be introduced through that gap to fill the interior space of the insulating gas pane.

Description

Technisches Gebiet:Technical field:

Die Erfindung betrifft ein Verfahren zum Zusammenbauen von Isolierglasscheiben, deren Innenraum zwischen Paaren von Glasplatten, die längs ihrer Ränder durch einen rahmenförmigen Abstandhalter auf Abstand voneinander gehalten und miteinander verklebt sind und während des Zusammenbauens mit ihrer äußeren Oberfläche an Positionierflächen anliegen, mit einem von Luft verschiedenen Gas gefüllt ist, durch

  • elastisches Biegen wenigstens einer der Glasplatten längs einer Kante der Glasplatte,
  • Anbringen des Abstandhalters an einer der Glasplatten (nachfolgend als die "erste" Glasplatte bezeichnet) vor, während oder nach dem Biegen einer der Glasplatten,
  • Anbringen des Abstandhalters an der anderen Glasplatte (nachfolgend als die "zweite" Glasplatte bezeichnet), wobei die Biegung aufrechterhalten wird, so dass ein Zugang zum Innenraum zwischen den Glasplatten offen bleibt,
  • Einleiten des Gases in den Innenraum durch den so geschaffenen Zugang, und
  • Verschieben des Zugangs durch Aufheben der elastischen Biegung,

sowie eine Vorrichtung zum Zusammenbauen von Isolierglasscheiben deren Innenraum zwischen Paaren von Glasplatten, die längs ihrer Ränder durch einen rahmenförmigen Abstandhalter auf Abstand voneinander gehalten und miteinander verklebt sind, mit einem von Luft verschiedenen Gas gefüllt ist,
mit einer Stützeinrichtung zum Abstützen und Positionieren der Glasplatten und
mit einer zur Stützeinrichtung parallelen und abstandsveränderlichen Halterung zum Festhalten und Positionieren einer der Glasplatten im Abstand von der anderen Glasplatte, wobei entweder die Stützeinrichtung oder die Halterung oder beide eine zur Anlage an der Aussenseite einer Glasplatte bestimmte Positionierfläche definieren, in welcher mit ihrer Vorderseite eine gegen die Glasplatte gerichtete längliche Saugvorrichtung angeordnet ist,
und mit einer Einrichtung zum Zuführen des Gases.The invention relates to a method for assembling insulating glass panes, the interior of which, between pairs of glass plates which are spaced apart and glued to one another along their edges by a frame-shaped spacer and which rest against positioning surfaces with their outer surface during assembly, with a different from air Gas is filled by
  • elastic bending of at least one of the glass plates along an edge of the glass plate,
  • Attaching the spacer to one of the glass plates (hereinafter referred to as the "first" glass plate) before, during or after bending one of the glass plates,
  • Attaching the spacer to the other glass plate (hereinafter referred to as the "second" glass plate) while maintaining the bend so that access to the interior between the glass plates remains open,
  • Introducing the gas into the interior through the access thus created, and
  • Moving the access by lifting the elastic bend,

and a device for assembling insulating glass panes, the interior of which is filled with a gas other than air between pairs of glass plates which are spaced apart and glued to one another along their edges by a frame-shaped spacer,
with a support device for supporting and positioning the glass plates and
with a parallel to the support device and distance-variable holder for holding and positioning one of the glass plates at a distance from the other glass plate, either the support device or the holder or both define a positioning surface intended for contact with the outside of a glass plate, in which with its front one against the glass plate is arranged directed elongated suction device,
and with a device for supplying the gas.

Stand der Technik:State of the art:

Ein solches Verfahren und eine solche Vorrichtung sind in der WO 89/11021 beschrieben. Bei dem bekannten Verfahren wird bei zwei zu einer Isolierglasscheibe zusammengefügten Glasplatten dadurch zeitweise ein Zugang zum Innenraum zwischen den Glasplatten geschaffen, dass eine der Glasplatten vor oder nach dem Zusammenfügen der Glasplatten elastisch gebogen wird. Die bekannte Vorrichtung hat zu diesem Zweck Sauger, die in einer vertikalen, streifenförmigen Ausnehmung einer Wand angeordnet und bis zur Vorderseite der Wand vorschiebbar und parallel zu sich selbst um einige Millimeter hinter die Vorderseite der Wand zurückziehbar sind. Die Wand selbst hat regelmässig über Ihre Oberfläche verteilte Löcher, durch welche ebenfalls Luft angesaugt werden kann, um die Glasplatte an der Wand festzuhalten und zu positionieren. Die durch die Löcher in der Wand angesaugte und dadurch zweiseitig eingespannte Glasplatte wird durch die Einwirkung der Sauger in der streifenförmigen Ausnehmung der Wand in einem streifenförmigen Bereich verbeult, wobei hohe Biegespannungen im Glas auftreten, weil die Glasplatte im Biegebereich mehrere Vorzeichenwechsel der Krümmung aufweist. Die hohe Biegespannung führt dazu, dass sich dicke Glasplatten nur noch schwer biegen lassen und dass in der Glasplatte vorhandene Mikrorisse, die ohne ein Biegen der Glasplatte nicht in Erscheinung treten würden, durch das Biegen zum Bruch der Glasplatte führen können. Eine lokale Milderung der Spannungen kann gemäß der WO 89/11021 dadurch erreicht werden, dass die Wand in einem beidseits an die Ausnehmung angrenzenden Bereich eine gekrümmte Oberfläche hat, welche einen stetigen Übergang vom ebenen Bereich der Wand in ihre Ausnehmung hinein schafft. Dadurch kann das Krümmungsmaß am Rand der Ausnehmung verringert werden, doch bleibt es dabei, dass die Glastafel einen mehrfachen Wechsel des Vorzeichens der Krümmung aufweist.Such a method and such a device are described in WO 89/11021. In the known method, in the case of two glass plates joined together to form an insulating glass pane, access to the interior space between the glass plates is temporarily created in that one of the glass plates is elastically bent before or after the glass plates are joined together. For this purpose, the known device has suction cups which are arranged in a vertical, strip-shaped recess in a wall and up to The front of the wall can be pushed forward and retracted parallel to itself by a few millimeters behind the front of the wall. The wall itself has holes regularly distributed over its surface, through which air can also be sucked in to hold and position the glass plate on the wall. The glass plate sucked in through the holes in the wall and thus clamped on both sides is dented in a strip-shaped area by the action of the suction cups in the strip-shaped recess of the wall, high bending stresses occurring in the glass because the glass plate in the bending area exhibits several changes in the sign of the curvature. The high bending stress means that thick glass plates are difficult to bend and that microcracks in the glass plate, which would not appear without bending the glass plate, can cause the glass plate to break due to the bending. According to WO 89/11021, a local alleviation of the stresses can be achieved in that the wall has a curved surface in a region adjacent to the recess on both sides, which creates a continuous transition from the flat region of the wall into its recess. This allows the amount of curvature at the edge of the recess to be reduced, but it remains that the glass sheet has a multiple change in the sign of the curvature.

In der WO 89/11021 ist auch bereits vorgeschlagen worden, die Glasplatte längs einem ihrer Ränder abzubiegen; es ist jedoch nicht angegeben, mit was für einer Vorrichtung das geschehen soll.In WO 89/11021 it has already been proposed to bend the glass plate along one of its edges; however, it is not specified with what device this is to be done.

Darstellung der Erfindung:Presentation of the invention:

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung anzugeben, mit welcher Glasplatten beim Zusammenbauen von Isolierglasscheiben mit geringerem Kraftaufwand und unter Ausbildung von geringeren Biegespannungen im Glas gebogen werden können, um einen Zugang zum Innenraum der Isolierglasscheibe zu schaffen, durch den ein von Luft verschiedenes Gas eingefüllt werden kann. Durch die verringerten Biegespannungen soll vor allem die Bruchgefahr vermindert und das Biegen dickerer Glasplatten erleichtert werden.The present invention has for its object to provide a method and an apparatus with which glass plates can be bent when assembling insulating glass panes with less effort and with the formation of lower bending stresses in the glass in order to provide access to the interior of the insulating glass pane through which a gas other than air can be filled. The reduced bending stresses are primarily intended to reduce the risk of breakage and to facilitate the bending of thick glass plates.

Diese Aufgabe wird gelöst durch ein Verfahren mit den im Anspruch 1 oder mit den im Anspruch 2 angegebenen Merkmalen. Eine zur Durchführung des erfindungsgemäßen Verfahrens besonders geeignete Vorrichtung ist Gegenstand des Anspruchs 10. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by a method with the features specified in claim 1 or with the features specified in claim 2. A device which is particularly suitable for carrying out the method according to the invention is the subject of claim 10. Advantageous developments of the invention are the subject of the subclaims.

Das Verfahren nach Anspruch 2 unterscheidet sich von dem Verfahren nach Anspruch 1 nur in der Reihenfolge der Schritte: Während beim Verfahren nach Anspruch 1 das Glasplattenbiegen stattfindet, bevor die Glasplatten zusammengefügt werden, findet beim Verfahren nach Anspruch 2 das Glasplattenbiegen statt, nachdem die Glasplatten zusammengefügt wurden, d.h., die Glasplatten werden erst unter Zwischenfügen eines Abstandhalters zusammengefügt und nachträglich wird eine Glastafel wieder abgebogen, wodurch sie sich abschnittsweise vom Abstandhalter wieder löst.The method according to claim 2 differs from the method according to claim 1 only in the order of the steps: while in the method according to claim 1 the glass plate bending takes place before the glass plates are joined, in the method according to claim 2 the glass plate bending takes place after the glass plates are joined were, that is, the glass plates are only put together by interposing a spacer and subsequently a glass sheet is bent again, causing them to separate from the spacer in sections solves again.

Neu und besonders wichtig ist, dass bei dem erfindungsgemäßen Verfahren die zu biegende Glasplatte gemeinsam mit der sie berührenden Positionierfläche gebogen wird. In Kombination damit, dass die Glasplatte nicht in einem mittleren Bereich, sondern längs einer ihrer Kanten parallel zu dieser Kante abgebogen wird, erreicht man, dass die Glasplatte auf ihrer äußeren Oberfläche im Biegebereich nur noch konkav ist, ein Vorzeichenwechsel der Krümmung also nicht mehr auftritt. Das bedeutet eine starke Herabsetzung der Biegespannung; im Vergleich mit dem Stand der Technik kommt man beim Bilden vergleichbar weiter Öffnungen mit Biegespannungen aus, die nur noch ein Viertel der sonst nötigen Biegespannungen betragen. Zu diesem Erfolg trägt wesentlich bei, dass in der Positionierfläche, an welcher die Glasplatte während des Biegens anliegt, keinerlei Knick auftritt, weil die Positionierfläche gemeinsam mit der Glastafel gebogen wird, wodurch sich die Positionierfläche und die Glasplatte auch im Biegebereich stetig aneinander anschmiegen.It is new and particularly important that in the method according to the invention the glass plate to be bent is bent together with the positioning surface touching it. In combination with the fact that the glass plate is not bent in a central area, but along one of its edges parallel to this edge, it is achieved that the glass plate on its outer surface in the bending area is only concave, so that the sign of the curvature no longer changes . This means a sharp reduction in the bending stress; in comparison with the prior art, when forming similarly large openings, bending stresses that only amount to a quarter of the bending stresses otherwise required are sufficient. A major contributor to this success is that there is no kink in the positioning surface against which the glass plate is in contact during bending, because the positioning surface is bent together with the glass sheet, which means that the positioning surface and the glass plate also nestle against each other in the bending area.

Wie anhand eines Ausführungsbeispieles noch gezeigt werden wird, kann das erfindungsgemäße Verfahren in einer herkömmlichen Isolierglasfertigungslinie durchgeführt werden, welche lediglich im Bereich der Zusammenbaustation mit verhältnismässig wenig Aufwand anzupassen ist. Dabei können in ein und derselben Fertigungslinie in beliebiger Reihenfolge Isolierglasscheiben mit Schwergasfüllung und auch solche mit Luftfüllung hergestellt werden.As will be shown on the basis of an exemplary embodiment, the method according to the invention can be carried out in a conventional insulating glass production line which can only be adapted with relatively little effort in the area of the assembly station. Insulating glass panes with heavy gas filling and also such can be in the same production line in any order be made with air filling.

Es gibt Abstandhalter, die biegsam genug sind, um sie zusammen mit einer Glasplatte biegen zu können; vorzugsweise wird die Glasplatte jedoch gebogen, bevor sie mit dem Abstandhalter verbunden wird, so dass es für das Erzeugen eines Zugangs zum Innenraum der Isolierglasscheibe nicht darauf ankommt, ob und in welchem Ausmaß der jeweilige Abstandhalter biegbar ist. Diese Vorgehensweise empfiehlt sich insbesondere bei der Herstellung von am Rand verklebtem Isolierglas, welches mit Hilfe von Abstandhaltern hergestellt wird, die aus metallischen Hohlprofilstäben bestehen und an ihren beiden Flanken mit einem Klebemittel versehen sind, mit dessen Hilfe sie die beiden Glasplatten miteinander verkleben. Grundsätzlich ist es auch möglich, beide Glasplatten zu verbiegen, um dadurch einen größeren Zugang zum Innenraum der Isolierglasscheibe zu schaffen. Es hat sich jedoch gezeigt, dass der damit verbundene erhöhte Aufwand nicht erforderlich ist. Vielmehr genügt es bereits, wenn man nur eine der Glasplatten biegt. In diesem Fall geht man am besten so vor, dass man den Abstandhalter auf die nicht zu biegende Glasplatte legt. Das hat den Vorteil, dass der Abstandhalter nicht auf Biegung beansprucht wird und an seinem ganzen Umfang gehalten und unterstützt ist. Danach legt man die gebogene Glasplatte an den Abstandhalter an, wobei durch die Biegung zwangsläufig eine Öffnung zwischen der gebogenen Glasplatte und dem Abstandhalter frei bleibt.There are spacers that are flexible enough to be bent together with a glass plate; however, the glass plate is preferably bent before it is connected to the spacer, so that it is not important for creating access to the interior of the insulating glass pane whether and to what extent the respective spacer can be bent. This procedure is particularly recommended for the production of insulating glass glued to the edge, which is produced with the help of spacers which consist of metallic hollow profile bars and are provided on their two flanks with an adhesive, with the aid of which they glue the two glass plates together. In principle, it is also possible to bend both glass plates in order to provide greater access to the interior of the insulating glass pane. However, it has been shown that the associated increased effort is not necessary. Rather, it is enough to bend just one of the glass plates. In this case, it is best to place the spacer on the glass plate that is not to be bent. This has the advantage that the spacer is not subjected to bending and is held and supported over its entire circumference. Then you place the curved glass plate on the spacer, whereby the opening inevitably leaves an opening between the curved glass plate and the spacer.

Alternativ kann man so vorgehen, dass man beide Glasplatten zunächst vollständig an den Abstandhalter anlegt und dann eine der beiden Glasplatten durch Biegen teilweise wieder vom Abstandhalter löst, sofern der verwendete Kleber dies erlaubt. Mit Klebern auf Butylkautschukbasis ist es möglich, wenn sie nicht zu stark verpreßt worden sind.Alternatively, you can proceed by first placing both glass plates completely against the spacer and then partially loosening one of the two glass plates from the spacer by bending if the adhesive used allows this. With butyl rubber-based adhesives, it is possible if they have not been pressed too hard.

Grundsätzlich kann man die Isolierglasscheibe liegend füllen, wobei eine der Glasplatten auf einem Tisch liegt und die zweite über ihr angeordnet, z.B. durch eine Saugeinrichtung gehalten ist, doch füllt man die Isolierglasscheibe vorzugsweise hochkant stehend und biegt eine der Glasplatten längs einer ihrer von unten nach oben verlaufenden Kanten ab; dabei füllt man das Schwergas zweckmässigerweise nahe bei der unteren Ecke der Isolierglasscheibe ein und läßt es im Zwischenraum zwischen den beiden Glasplatten hochsteigen, wobei es die Luft nach oben hin verdrängt. Zweckmässigerweise deckt man dabei den Öffnungsspalt am unteren, waagerechten Rand und an dem sich von unten nach oben erstreckenden Rand der Isolierglasscheibe ab und läßt die Luft aus der am oberen, waagerechten Rand verbleibenden Öffnung ausströmen.Basically, you can fill the insulating glass panel horizontally, with one of the glass plates lying on a table and the second one arranged above it, e.g. is held by a suction device, but one fills the insulating glass pane preferably standing upright and bends one of the glass plates along one of its edges running from bottom to top; the heavy gas is expediently filled in close to the lower corner of the insulating glass pane and is allowed to rise in the space between the two glass plates, displacing the air upwards. Expediently, one covers the opening gap on the lower, horizontal edge and on the edge of the insulating glass pane which extends from bottom to top and allows the air to flow out of the opening remaining on the upper, horizontal edge.

In der zur Durchführung des erfindungsgemäßen Verfahrens vorgeschlagenen Vorrichtung werden die beiden zur Isolierglasscheibe zusammenzubauenden Glasplatten parallel zueinander deckungsgleich positioniert und zusammengefügt, wobei eine oder beide Glasplatten, vorzugsweise nur eine der Glasplatten, erfindungsgemäß am Rand abgebogen wird, so dass ein Schwergas eingefüllt werden kann. Nach Abschluß der Schwergasfüllung wird die Biegung aufgehoben und die Glasplatten werden am ganzen Umfang mit dem Abstandhalter verklebt. Dazu hat die Vorrichtung eine Stützeinrichtung für eine der Glasplatten und eine dazu parallele und abstandsveränderliche Halterung für die andere Glasplatte. Isolierglasscheiben werden entweder liegend oder stehend zusammengebaut, im zuletzt genannten Fall üblicherweise ein wenig geneigt. In beiden Fällen hat man mithin eine untere Glasplatte - sie wird durch die Stützeinrichtung unterstützt - und eine obere Glasplatte - sie wird durch die Halterung gehalten. Bei der Stützeinrichtung kann es sich um ein in diesem Gebiet der Technik an sich bekanntes Rollenfeld handeln; vorzugsweise handelt es sich um eine Luftkissenwand, auf welcher eine Glasplatte auf einem Luftkissen schwimmend bewegt und durch Umschalten von Blasen auf Saugen fixiert werden kann. Die Halterung könnte ein Rahmen sein mit Klammern, die die Glasplatte am Rand ergreifen, und mit Positionierelementen, welche eine Positionierfläche definieren. Vorzugsweise ist auch die Halterung wie die Stützeinrichtung eine Wand, insbesondere eine solche mit Bohrungen, durch die Luft angesaugt werden kann, um eine Glasplatte ansaugen und an der Wand festhalten und positionieren zu können.In the device proposed for carrying out the method according to the invention, the two glass plates to be assembled to form the insulating glass pane are positioned and joined parallel to one another in a congruent manner, one or both glass plates, preferably only one of the glass plates, being bent at the edge according to the invention, so that a heavy gas can be filled. After completing the heavy gas filling, the bend is removed and the glass plates are glued to the entire circumference with the spacer. For this purpose, the device has a support device for one of the glass plates and a holder for the other glass plate which is parallel and variable in distance therefrom. Insulating glass panes are either assembled horizontally or upright, in the latter case usually a little inclined. In both cases you have a lower glass plate - it is supported by the support device - and an upper glass plate - it is held by the bracket. The support device can be a roller field known per se in this field of technology; it is preferably an air cushion wall on which a glass plate can float on an air cushion and can be fixed by switching from bubbles to suction. The holder could be a frame with brackets that grip the glass plate at the edge and with positioning elements that define a positioning surface. Preferably, the holder, like the support device, is also a wall, in particular one with bores through which air can be sucked in, in order to be able to suck in a glass plate and hold and position it on the wall.

Eine dieser beiden Wände, die beide eine Positionierfläche für eine Glastafel bilden, ist mit einer länglichen Saugvorrichtung kombiniert, welche mit ihrer Vorderseite in einem Bereich der Positionierfläche liegt, der elastisch auslenkbar ist. Ob dieser Bereich zur Stützeinrichtung oder zur Halterung gehört, ist eine Frage der Zweckmässigkeit. Vorzugsweise liegt der elastisch auslenkbare Bereich am Rand der Halterung oder der Stützeinrichtung, so dass die Halterung bzw. Stützeinrichtung mit diesem auslenkbaren Bereich endet. Der auslenkbare Bereich könnte aber auch inmitten einer größeren Stützeinrichtung oder Halterung liegen; in diesem Fall wird die zu biegende Glasplatte aber so positioniert, dass sie nur dem elastisch auslenkbaren Bereich und jenem einseitig daran anschließenden Bereich der Positionierfläche anliegt, an welchem der auslenkbare Bereich einseitig eingespannt ist.One of these two walls, which both form a positioning surface for a glass sheet, is combined with an elongated suction device, which lies with its front in an area of the positioning surface that can be deflected elastically. Whether this area for the support device or for mounting heard is a question of expediency. The elastically deflectable area is preferably located at the edge of the holder or the support device, so that the holder or support device ends with this deflectable area. The deflectable area could also lie in the middle of a larger support device or holder; in this case, however, the glass plate to be bent is positioned such that it only rests on the elastically deflectable area and that area of the positioning surface adjoining it on which the deflectable area is clamped on one side.

Die längliche Saugvorrichtung enthält vorzugsweise eine Reihe von mehreren Saugern, welche unmittelbar aneinander angrenzend angeordnet sind und einzeln aktivierbar sind, um die Saugkraft für das Biegen optimal erzeugen und an die Größe der jeweiligen Glasplatte anpassen zu können. In einer Vorrichtung, in welcher die Glastafeln aufrechtstehend Zusammengebaut werden und auf welcher sie auf einem Waagerechtförderer stehend und gegen die Stützeinrichtung gelehnt hinein-und herausgefördert werden, erstreckt sich die Reihe der Sauger vorzugsweise im rechten Winkel zur Förderrichtung, so dass die zu biegende Glasplatte längs einer ihrer von unten nach oben verlaufenden Kanten abgebogen wird, vorzugsweise längs der in Förderrichtung vorne liegenden Kante.The elongated suction device preferably contains a number of several suction devices, which are arranged directly adjacent to one another and can be activated individually in order to be able to optimally generate the suction force for bending and to adapt it to the size of the respective glass plate. In a device in which the glass sheets are assembled upright and on which they are fed in and out standing on a horizontal conveyor and leaning against the support device, the row of suction cups preferably extends at right angles to the conveying direction, so that the glass sheet to be bent is longitudinal one of its edges running from bottom to top is bent, preferably along the edge lying in front in the conveying direction.

In Anbetracht der Tatsache, dass man erfindungsgemäß zum Einfüllen des Gases und zum Verdängen des Gas-Luft-Gemisches zwischen dem Abstandhalter und einer Glasplatte eine langgestreckte Öffnung vorfindet, verwendet man zum Einfüllen des Gases mit Vorteil eine Düse mit einer langgestreckten Mündung, welche man am Rand der Glasplatten oder am Rand einer Glasplatte und am Abstandhalter zur Anlage bringt und in geeigneter Weise abdichtet, so dass man einen maximalen Wirkungsgrad erzielt. Das verdrängte Gas-Luft-Gemisch kann durch eine Absaugdüse abgesaugt werden, welche ebenfalls am Rand der Glasplatte oder am Rand einer Glasplatte und am Abstandhalter angelegt werden kann. Darüberhinaus sieht man zwischen dem Bereich der Einfülldüse und dem Bereich, in welchem das verdrängte Gas-Luft-Gemisch ausströmt, ein Abdeckelement vor, um Gasverluste zu vermeiden. Vorzugsweise integriert man die Einfülldüse und die Absaugdüse in ein gemeinsames Abdeckelement, welches den Rand der Isolierglasscheibe längs der gesamten Kante, längs welcher die Abbiegung erfolgt, abdeckt. Dieses Abdeckelement enthält vorzugsweise - in der Nachbarschaft der Einfülldüse beginnend - eine Reihe von Absaugöffnungen, welche einzeln oder in Gruppen aktivierbar sind. Dadurch wird es auch bei unterschiedlich großen Isolierglasscheiben möglich, die Absaugung nur durch eine Absaugöffnung oder durch eine Gruppe von Absaugöffnungen vornehmen zu lassen, welche ausserhalb des Randes der Isolierglasscheibe, aber doch in der Nähe ihrer Ecke liegt.In view of the fact that according to the invention, an elongated one for filling the gas and for displacing the gas-air mixture between the spacer and a glass plate If the opening is found, it is advantageous to use a nozzle with an elongated mouth to fill the gas, which is brought to the edge of the glass plates or on the edge of a glass plate and on the spacer and sealed in a suitable manner, so that maximum efficiency is achieved. The displaced gas-air mixture can be sucked off through a suction nozzle, which can also be placed on the edge of the glass plate or on the edge of a glass plate and on the spacer. In addition, a cover element is provided between the area of the filling nozzle and the area in which the displaced gas-air mixture flows out in order to avoid gas losses. The filling nozzle and the suction nozzle are preferably integrated into a common cover element which covers the edge of the insulating glass pane along the entire edge, along which the bend takes place. This cover element preferably contains - starting in the vicinity of the filling nozzle - a series of suction openings which can be activated individually or in groups. This makes it possible, even with insulating glass panes of different sizes, to have the suction carried out only through a suction opening or through a group of suction openings which is outside the edge of the insulating glass pane, but nevertheless near its corner.

Für das Handhaben von stehenden Isolierglasscheiben empfiehlt es sich, am unteren Ende des Abdeckelementes eine kurze Abdeckleiste verschwenkbar anzulenken, welche nach dem Anlegen des Abdeckelementes an die abgebogene Glaskante an den unteren Rand der Isolierglasscheibe geschwenkt werden kann, um den dort bestehenden keilförmigen Spalt abzudecken.For handling standing insulating glass panes, it is advisable to pivotally pivot a short cover strip at the lower end of the cover element, which, after the cover element has been placed on the bent glass edge, on the lower one Edge of the insulating glass pane can be pivoted to cover the wedge-shaped gap there.

Die Saugvorrichtung umfaßt vorzugsweise ein am auslaufseitigen Ende der Halterung einseitig eingespanntes, mit Saugöffnungen versehenes Blech, welches auf seiner Vorderseite eine Schicht aus einem elastomeren Werkstoff trägt. Ein solches Blech hat die gewünschte Biegefähigkeit, wobei sich die für das Abdichten des Saugers und das schonende Anlegen an die Glasoberfläche vorgesehene elastomere Schicht leicht mitbiegen läßt. Das Biegen kann durch eine Zug- und/oder Schubvorrichtung erfolgen, welche an der Rückseite des Blechs angreift, vorzugsweise in unmittelbarer Nachbarschaft des auslaufseitigen Randes des Bleches. Der Angriff der Schub- und/oder Druckvorrichtung sollte vorzugsweise gelenkig erfolgen, um eine Verzerrung der Biegelinien durch einen starren Angriff zu vermeiden. Den Werkstoff und die Dicke des Blechs wählt man zweckmässigerweise so, dass sein Biegeverhalten dem der Glasplatte angepaßt ist und sich beide mit möglichst übereinstimmender Krümmung biegen lassen. Die Erfahrung hat gezeigt, dass man mit einem 4 bis 5 mm dicken Stahlblech sehr gute Ergebnisse erzielt.The suction device preferably comprises a sheet which is clamped on one side at the outlet-side end of the holder and provided with suction openings and which carries a layer of an elastomeric material on its front side. Such a sheet has the desired bendability, and the elastomeric layer provided for sealing the nipple and gentle application to the glass surface can be easily bent. The bending can be done by a pulling and / or pushing device which acts on the back of the sheet, preferably in the immediate vicinity of the edge of the sheet on the outlet side. The thrust and / or pressure device should preferably be attacked in an articulated manner in order to avoid distortion of the bending lines due to a rigid attack. The material and the thickness of the sheet are expediently chosen so that their bending behavior is matched to that of the glass plate and both can be bent with the same possible curvature. Experience has shown that you can achieve very good results with a 4 to 5 mm thick steel sheet.

Wege zur Ausführung der Erfindung:WAYS OF CARRYING OUT THE INVENTION:

Ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung ist in den beigefügten Zeichnungen schematisch dargestellt.

Figur 1
zeigt die Vorrichtung in einer Seitenansicht,
Figur 2
zeigt schematisch den längs der Linie II-II gelegten Schnitt durch einen Teil der Vorrichtung,
Figur 3
zeigt als Detail den Querschnitt III-III durch einen Abschnitt der Vorrichtung mit einer Isolierglasscheibe, deren eine Glasplatte abgebogen ist,
Figur 4
zeigt denselben Schnitt durch die Vorrichtung wie Figur 3, jedoch in der Stellung mit geschlossener Isolierglasscheibe,
Figur 5
zeigt als Detail des Schnittes gemäß Figur 3 in vergrößerter Darstellung den Bereich der Einfülldüse,
Figur 6
zeigt als Detail einen Vertikalschnitt durch die Einfülldüse entlang der Schnittlinie VI-VI gemäß Figur 5,
Figur 7
zeigt als Detail das untere Ende eines Abdichtelementes für die Isolierglasscheibe mit einer schwenkbar daran befestigten kurzen Abdeckleiste, und
Figur 8
zeigt als Detail einen Querschnitt durch das Abdeckelement in Höhe eines Absaugkanales.
An embodiment of the device according to the invention is shown schematically in the accompanying drawings.
Figure 1
shows the device in a side view,
Figure 2
schematically shows the section along the line II-II through part of the device,
Figure 3
shows in detail the cross section III-III through a section of the device with an insulating glass pane, the one glass plate of which is bent,
Figure 4
shows the same section through the device as Figure 3, but in the position with closed insulating glass,
Figure 5
3 shows an enlarged representation of the area of the filling nozzle as a detail of the section according to FIG. 3,
Figure 6
shows as a detail a vertical section through the filling nozzle along the section line VI-VI according to FIG. 5,
Figure 7
shows as a detail the lower end of a sealing element for the insulating glass pane with a pivotally attached short cover strip, and
Figure 8
shows as a detail a cross section through the cover element at the level of a suction channel.

Die Figuren 1 und 2 zeigen, dass die Vorrichtung ein Untergestell 1 und darauf einen Sockel 2 hat, welcher einen waagerecht fördernden Förderer trägt, der durch eine Folge von synchron angetriebenen Rollen 3 gebildet ist. Zwischen je zwei benachbarten Rollen 3 ist ein Auflager 4 angeordnet; die Folge der Auflager 4 ist an einem Hubbalken 5 angeordnet, welcher auf und ab verstellbar ist, so dass die Auflager 4 zwischen einer Lage, in welcher sie über die Rollen 3 nach oben vorstehen, und einer Lage, in welcher sie unter die Oberseite der Rollen 3 versenkt sind, hin und her verschiebbar ist.Figures 1 and 2 show that the device has a base 1 and thereon a base 2, which carries a horizontally conveying conveyor, which is formed by a sequence of synchronously driven rollers 3. A support 4 is arranged between two adjacent rollers 3; the sequence of the supports 4 is arranged on a walking beam 5, which is adjustable up and down, so that the supports 4 between a position in which they protrude above the rollers 3 and a position in which they are below the top of the Rollers 3 are sunk, can be moved back and forth.

Oberhalb der Rollen 3 ist eine Stützwand 6 angeordnet, welche einerseits auf dem Sockel 2 fußt und andererseits durch Streben 7 und 8, welche auf dem Untergestell 1 fußen, in eine um ungefähr 6° gegenüber der Vertikalen nach hinten geneigten Lage abgestützt ist. Die Stützwand 6 ist als Luftkissenwand ausgebildet, d.h. sie besteht aus einer Platte 9, in welcher eine Anzahl von Bohrungen verteilt ist, welchen durch ein Gebläse 10 über eine Leitung 11 Druckluft zugeführt wird. Die Vorderseite der Stützwand 6 bildet eine erste Positionierfläche 28 für eine Glasplatte 40 und 42.Above the rollers 3 there is a support wall 6, which is based on the one hand on the base 2 and on the other hand is supported by struts 7 and 8, which are based on the base frame 1, in a position inclined to the rear by approximately 6 ° with respect to the vertical. The support wall 6 is designed as an air cushion wall, i.e. it consists of a plate 9 in which a number of bores are distributed, to which compressed air is supplied by a blower 10 via a line 11. The front of the support wall 6 forms a first positioning surface 28 for a glass plate 40 and 42.

Am Rahmen der Stützwand 6 sind nahe bei den vier Ecken der Stützwand vier im rechten Winkel zur Stützwand 6 verlaufende Stangen 12 angeordnet, welche rechtwinklig zur Stützwand 6 durch einen druckmittelbetätigten Zylinder 13 vor und zurückschiebbar sind. Anstelle des Zylinders 13 könnte auch eine Spindel verwendet werden. Die Stangen 12 tragen an ihrem vorderen Ende eine Halterung 14, an welcher ein Rahmen mit einer Wand 15 befestigt ist, die parallel zur Stützwand 6 verläuft und durch Betätigen der Druckmittelzylinder 13 in ihrem Abstand von der Stützwand 6 verändert werden kann. Die Wand 15 ist ebenfalls als Luftkissenwand ausgebildet und wird deshalb durch eine weitere Leitung 17 vom Gebläse 10 mit Druckluft versorgt. Sie weist wie die Stützwand 6 über ihre Oberfläche verteilt eine Anzahl von Bohrungen 35 auf, durch die die Gebläseluft austreten oder angesaugt werden kann. Ihre Vorderseite bildet eine zweite Positionierfläche für eine Glasplatte 40. Unterhalb der Wand 15 ist ein weiterer Hubbalken 18 mit einer Anzahl von Auflagern 19 angeordnet.On the frame of the support wall 6 are arranged near the four corners of the support wall four at right angles to the support wall 6 rods 12, which can be pushed back and forth at right angles to the support wall 6 by a pressure-actuated cylinder 13. Instead of the cylinder 13, a spindle could also be used. The rods 12 carry at their front end a holder 14 to which a frame is fastened with a wall 15 which runs parallel to the support wall 6 and whose distance from the support wall 6 can be changed by actuating the pressure medium cylinders 13. The wall 15 is also designed as an air cushion wall and is therefore supplied with compressed air by the fan 10 through a further line 17. Like the support wall 6, it has a number of bores 35 distributed over its surface through which the blower air can escape or be sucked in. Its front forms a second positioning surface for a glass plate 40. A further walking beam 18 with a number of supports 19 is arranged below the wall 15.

An dem im Bezug auf die Förderrichtung auslaufseitigen Ende der Wand 15 befindet sich eine streifenförmige, sich vom unteren Rand bis zum oberen Rand der Wand 15 erstreckende Saugvorrichtung 20, welche aus einer Reihe von übereinander angeordneten Saugern 21 besteht, die über Rohrleitungen 22 und 23 mit einem nicht dargestellten Saugaggregat verbunden sind und einzeln oder in Gruppen aktiviert werden können.At the outlet-side end of the wall 15 with respect to the conveying direction there is a strip-shaped suction device 20, which extends from the lower edge to the upper edge of the wall 15 and which consists of a series of suction devices 21 arranged one above the other, which is connected via pipes 22 and 23 a suction unit, not shown, are connected and can be activated individually or in groups.

In Förderrichtung 25 an die Saugvorrichtung 20 anschließend ist ein Abdeckelement 26 vorgesehen, welches in den Förderweg einer Isolierglasscheibe und aus dem Förderweg heraus bewegt werden kann.In the conveying direction 25 to the suction device 20, a cover element 26 is provided, which can be moved into the conveying path of an insulating glass pane and out of the conveying path.

Wie die Figuren 3 und 4 zeigen, umfaßt die Saugvorrichtung 20 ein Blech 50, insbesondere ein 4 bis 5 mm dickes Stahlblech, welches sich an den auslaufseitigen Rand der mit Bohrungen versehenen Wand 15 anschließt, welche die zu biegende Glasplatte 40 durch Ansaugen festhält. Das Blech 50 erstreckt sich von der unteren Ecke bis zur oberen Ecke der Wand 15, welche an ihrem auslaufseitigen Rand starr mit einer Metallplatte 51 verbunden ist, deren Vorderseite gegenüber der Vorderseite der Wand 14 zurückversetzt ist. Das Blech 50 ist fest mit der Vorderseite der Metallplatte 51 verbunden und ragt in Förderrichtung 25 über die Metallplatte 51 hinaus; das Blech 50 ist auf diese Weise durch einseitige Einspannung am auslaufseitigen Rand der Wand 14 angebracht. Infolge der einseitigen Einspannung kann das Blech 50 quer zu seiner Oberfläche durch elastisches Biegen ausgelenkt werden. Um das zu bewerkstelligen ist am auslaufseitigen Rand des Blechs 50 mittels eines Scharniers 52 gelenkig eine Platte 53 angebracht, welche rückseitig durch Streben 54 und 55, welche im rechten Winkel zur Oberfläche der Platte 53 verlaufen, mit einer weiteren Platte 56 verbunden ist, so dass die Platten 53 und 56 mit den Streben 54 und 55 einen Rahmen bilden, welcher parallel zu sich selbst und zur vorderen Oberfläche der Wand 15 vor und zurück bewegbar ist. Die Parallelführung des Rahmens wird durch ein Gelenkviereck gewährleistet, welches durch die Einspannstelle des Blechs 50 an der Metallplatte 51, durch das Scharnier 52 sowie durch zwei in entsprechendem Abstand angeordnete, hinter der Platte 56 liegende Gelenke 57 und 58 gewährleistet, von denen das Gelenk 57 fest mit der Platte 56 und das Gelenk 58 fest mit dem Grundrahmen der Wand 15 verbunden ist, wobei die beiden Gelenke 57 und 58 durch einen Lenker 60 miteinander verbunden sind.As FIGS. 3 and 4 show, the suction device 20 comprises a sheet 50, in particular a 4 to 5 mm thick steel sheet, which adjoins the outlet-side edge of the wall 15 provided with bores, which holds the glass plate 40 to be bent by suction. The sheet 50 extends from the lower corner to the upper corner of the wall 15, which is rigidly connected at its outlet-side edge to a metal plate 51, the front of which is set back from the front of the wall 14. The sheet 50 is firmly connected to the front of the metal plate 51 and projects in the conveying direction 25 beyond the metal plate 51; in this way, the sheet 50 is attached to the outlet-side edge of the wall 14 by one-sided clamping. As a result of the one-sided clamping, the sheet 50 can be deflected transversely to its surface by elastic bending. In order to accomplish this, a plate 53 is articulated on the outlet-side edge of the sheet 50 by means of a hinge 52, which is connected to another plate 56 on the back by struts 54 and 55, which run at right angles to the surface of the plate 53, so that the plates 53 and 56 with the struts 54 and 55 form a frame which can be moved back and forth parallel to itself and to the front surface of the wall 15. The parallel guidance of the frame is ensured by a four-bar linkage, which is established by the clamping point of the sheet 50 on the metal plate 51, by the hinge 52 and by two joints 57 and 58 arranged at a suitable distance behind the plate 56 guaranteed, of which the hinge 57 is fixed to the plate 56 and the hinge 58 is firmly connected to the base frame of the wall 15, the two joints 57 and 58 being connected to one another by a link 60.

Der Mechanismus zum Verschieben des Rahmens 53 bis 56 umfaßt zwei aufblasbare Schläuche 61 und 62. Der Schlauch 61 ist zwischen der Platte 53 und der Vorderseite einer zwischen den Platten 53 und 56 verlaufenden Säule 63 angeordnet, welche zum Grundrahmen 59 gehört und somit gestellfest ist. Der Schlauch 62 ist zwischen der Platte 56 und der Rückseite der Säule 63 angeordnet.The mechanism for moving the frame 53 to 56 comprises two inflatable tubes 61 and 62. The tube 61 is arranged between the plate 53 and the front of a column 63 extending between the plates 53 and 56, which belongs to the base frame 59 and is thus fixed to the frame. The hose 62 is arranged between the plate 56 and the rear of the column 63.

Wird der hintere Schlauch 62 aufgeblasen und der vordere Schlauch 61 entlüftet (Figur 3) dann wird die Platte 53 zurückgezogen, bis sie mit einem justierbaren Anschlag 64 gegen den Grundrahmen 59 stößt. Mit der Platte 53 bewegt sich der auslaufseitige Rand des Bleches 50 zurück, welches dadurch gebogen wird (Figur 3). Werden beide Schläuche 61 und 62 entlüftet, kehrt das Blech 50 durch elastisches Rückfedern in seine Ausgangslage zurück, in welcher es mit seiner beschichteten Vorderseite in der Flucht der Positionierfläche 29 liegt. Wird ergänzend der vordere Schlauch 61 aufgeblasen, dann wird das Blech 50 in seiner Lage stabilisiert, wobei an der hinteren Platte 56 vorgesehene justierbare Anschläge 65, welche am Grundrahmen 59 anschlagen, sicherstellen, dass die Saugvorrichtung 20 mit ihrer Vorderseite nicht über die Positionierfläche 29 hinaus vorgeschoben wird.If the rear tube 62 is inflated and the front tube 61 is vented (FIG. 3), the plate 53 is pulled back until it abuts the base frame 59 with an adjustable stop 64. With the plate 53, the edge of the sheet 50 on the outlet side moves back, which is thereby bent (FIG. 3). If both hoses 61 and 62 are vented, the sheet metal 50 returns to its initial position by elastic springback, in which it lies with the coated front side in alignment with the positioning surface 29. If the front tube 61 is additionally inflated, the sheet 50 is stabilized in its position, whereby adjustable stops 65 provided on the rear plate 56, which abut the base frame 59, ensure that the suction device 20 does not extend beyond the positioning surface 29 with its front side is advanced.

Die Vorderseite des Blechs 50 ist mit einer Schicht 66 aus einem elastomeren Werkstoff, insbesondere aus Gummi, versehen (siehe Figur 5), wobei zur Unterteilung und Begrenzung der einzelnen Sauger 21 streifenförmige, kompressible Dichtungen, z.B. aus Moosgummi, in die Schicht 66 eingelassen sind. Diese streifenförmigen Dichtungen 67 geben jedem Sauger eine rechteckige Umrißgestalt, in deren Mitte eine Saugöffnung 68 liegt (Figur 2). Die streifenförmigen Dichtungen 67 stehen über die Vorderseite der Schicht 66 vor und werden beim Ansaugen einer Glasplatte 40 komprimiert.The front of the sheet 50 is provided with a layer 66 made of an elastomeric material, in particular rubber (see FIG. 5), strip-shaped, compressible seals, e.g. made of foam rubber, in which layer 66 are embedded. These strip-shaped seals 67 give each suction cup a rectangular outline shape, in the middle of which there is a suction opening 68 (FIG. 2). The strip-shaped seals 67 protrude from the front of the layer 66 and are compressed when a glass plate 40 is sucked in.

Beim Biegen der Platte 50 wird eine daran angesaugte Glasplatte 40 mitgebogen, wodurch sich in einer Isolierglasscheibe 44, welche sich zwischen der Luftkissenwand 6 und der Wand 15 befindet, eine spaltförmige Öffnung 43 bildet, welche am auslaufseitigen Rand der Isolierglasscheibe 44 liegt (siehe Figuren 3 und 5). Durch diese spaltförmige Öffnung 43 soll in den Innenraum der Isolierglasscheibe ein von Luft verschiedenes Gas, insbesondere ein Schwergas, eingeblasen und die Luft aus dem Innenraum verdrängt werden. Als Einrichtung zum Zuführen des Gases ist eine Düse 31 vorgesehen, welche in der Nachbarschaft der unteren Ecke der Isolierglasscheibe 44 an deren auslaufseitigem Rand zur Anlage gebracht wird. Die Düse 31 befindet sich an einer langgestreckten Winkelschiene 32, welche zum Abdecken des gesamten auslaufseitigen Randes der Isolierglasscheibe 44 dient und oberhalb der Düse 31 in regelmässigen Abständen eine Reihe von Absaugdüsen 33 enthält (siehe Figuren 1 und 8).When the plate 50 is bent, a glass plate 40 sucked thereon is also bent, as a result of which a gap-shaped opening 43 is formed in an insulating glass pane 44, which is located between the air cushion wall 6 and the wall 15, and lies at the outlet-side edge of the insulating glass pane 44 (see FIGS. 3 and 4) and 5). Through this gap-shaped opening 43, a gas other than air, in particular a heavy gas, is to be blown into the interior of the insulating glass pane and the air is to be displaced from the interior. As a device for supplying the gas, a nozzle 31 is provided, which is brought into contact in the vicinity of the lower corner of the insulating glass pane 44 on its outlet-side edge. The nozzle 31 is located on an elongated angle rail 32, which is used to cover the entire outlet-side edge of the insulating glass pane 44 and above the nozzle 31 in a regular manner Spacing contains a number of suction nozzles 33 (see Figures 1 and 8).

Die Vorderseite der Winkelschiene 32 ist mit einer Dichtung 34 belegt, welche einerseits am auslaufseitigen Rand des Blechs 50 und andererseits am auslaufseitigen Rand der Luftkissenwand 6 zur Anlage gebracht wird.The front of the angle rail 32 is covered with a seal 34, which is brought into contact on the one hand on the outlet-side edge of the sheet 50 and on the other hand on the outlet-side edge of the air cushion wall 6.

In Höhe des Rollenganges 3 ist an der Winkelschiene 32 schwenkbar eine kurze Abdeckleiste 27 vorgesehen, welche auf ihrer Oberseite eine streifenförmige Dichtung 36 trägt, welche zur Anlage am unteren Rand der Isolierglasscheibe 44 bestimmt ist (siehe Figuren 2 und 7). Dadurch soll der sich beim Biegen der Glasplatte 40 am unteren Rand bildende keilförmige Spalt abgedichtet werden. Damit an dieser Stelle das eingefüllte Gas nicht längs dem Abstandhalter 41 durch die Randfuge 45 der Isolierglasscheibe abströmt, ist am Ende der Abdeckleiste 27 noch eine Bürste 38 vorgesehen, deren Borsten in die Randfuge eintauchen, wenn die Abdeckleiste 27 an den unteren Rand der Isolierglasscheibe 44 angelegt wird. Zum Verschwenken der Abdeckleiste 27 ist ein Druckmittelzylinder 39 vorgesehen.At the level of the roller conveyor 3, a short cover strip 27 is pivotally provided on the angle rail 32, which carries on its upper side a strip-shaped seal 36 which is intended to rest against the lower edge of the insulating glass pane 44 (see FIGS. 2 and 7). This is intended to seal the wedge-shaped gap that forms at the lower edge when the glass plate 40 is bent. So that the filled gas does not flow along the spacer 41 through the edge joint 45 of the insulating glass pane at this point, a brush 38 is also provided at the end of the cover strip 27, the bristles of which plunge into the edge joint when the cover strip 27 contacts the lower edge of the insulating glass pane 44 is created. A pressure medium cylinder 39 is provided for pivoting the cover strip 27.

Um die Isolierglasscheibe in Förderrichtung 25 aus der Vorrichtung herausfördern zu können, muss das Abdeckelement 26 aus dem Förderweg herausbewegt werden können. Zu diesem Zweck sind Druckmittelzylinder 46 vorgesehen, die an der Winkelschiene 32 angreifen, um sie vor und zurück zu bewegen (siehe Figuren 3 und 4), wobei durch Lenker 47 und 48, die am Druckmittelzylinder 46 bzw. an der Winkelschiene 32 angelenkt sind, ein Gleichlauf der Winkelschiene bei der Vor- und Zurückbewegung gewährleistet wird. Die Druckmittelzylinder 46 wiederum sind durch einen oder zwei Druckmittelzylinder 49, welche am Grundgestell 59 angebracht sind, in Förderrichtung und entgegen der Förderrichtung 25 verschiebbar.In order to be able to convey the insulating glass pane out of the device in the conveying direction 25, the cover element 26 must be able to be moved out of the conveying path. For this purpose, pressure medium cylinders 46 are provided which act on the angle rail 32 in order to move it back and forth (see FIGS. 3 and 4), with links 47 and 48, which are articulated on the pressure medium cylinder 46 or on the angle rail 32, ensuring synchronism of the angle rail during the forward and backward movement. The pressure medium cylinders 46 are in turn displaceable in the conveying direction and counter to the conveying direction 25 by one or two pressure medium cylinders 49 which are attached to the base frame 59.

Wie Figur 6 zeigt, ist die Düse 31 zum Zuführen des Gases mit einer flachen, langgestreckten Mündung versehen, durch welche ein entsprechend flacher Strahl in den Scheibeninnenraum gerichtet werden kann. Figur 6 zeigt die Düse in der Anlage an einer sehr kleinen Isolierglasscheibe. Die Höhe der Düsenöffnung soll geringer sein als die Höhe der kleinsten zu bearbeitenden Isolierglasscheibe.As FIG. 6 shows, the nozzle 31 for supplying the gas is provided with a flat, elongated mouth through which a correspondingly flat jet can be directed into the interior of the pane. Figure 6 shows the nozzle in the system on a very small insulating glass pane. The height of the nozzle opening should be less than the height of the smallest insulating glass pane to be processed.

Die Vorrichtung arbeitet wie folgt:The device works as follows:

Bei abgesenkten Hubbalken 5 und 18 wird eine Glasplatte 40 auf den Rollen 3 stehend und gegen die Stützwand 6 gelehnt in die Vorrichtung hereintransportiert. Die Lage, Länge und Höhe der Glasplatte 40 werden in an sich bekannter Weise durch Sensoren erfaßt.With the walking beams 5 and 18 lowered, a glass plate 40 standing on the rollers 3 and leaning against the supporting wall 6 is transported into the device. The position, length and height of the glass plate 40 are detected by sensors in a manner known per se.

Die Glasplatte 40 wird bis zum auslaufseitigen Rand der Stützwand 6 gefördert und bündig mit deren Rand gestoppt.The glass plate 40 is conveyed to the outlet-side edge of the support wall 6 and stopped flush with the edge thereof.

Nun wird der Hubbalken 3 nach oben bewegt und dadurch die Glasplatte 40 von den Rollen 3 abgehoben. Nunmehr wird die Wand 15 der Glasplatte 40 angenähert. Dabei wird die Winkelschiene 32, die am Ende der Kolbenstange 46a des Druckmittelzylinders 46 angebracht ist und zuvor vorgeschoben wurde, mitgenommen, bis sie auf einen nicht dargestellten, am Untergestell 1 angebrachten Festanschlag trifft. Bei weiterer Vorwärtsbewegung der Wand 15 wird die Kolbenstange 46a in den Druckmittelzylinder 46 eingeschoben, bis die Wand 15 auf die Glasplatte 40 trifft. In dieser Lage, welche ein Maß für die Dicke der Glasplatte 40 ist wird die Kolbenstange 46a im Druckmittelzylinder 46 arretiert. Nun wird die Glasplatte 40 angesaugt, indem durch die Bohrungen 35 in der Wand 15 Luft angesaugt wird, und wird zusammen mit der Wand 15 zurückbewegt, an welcher sie hängt und am unteren Rand durch die inzwischen angehobenen Auflager 19 unterstützt wird. Gleichzeitig mit dem Ansaugen durch die Bohrungen 35, spätestens aber jetzt werden, z.B. gesteuert durch einen Sensor, der die Höhe der Glasplatte 40 bestimmt, jene Sauger 21 aktiviert die von der Glasplatte 40 vollständig überdeckt werden: Sie saugen die Glasplatte 40 zusätzlich an. Haben sich die Sauger 21 auf der äußeren Oberfläche der Glasplatte 40 festgesaugt, wird das Blech 50, auf dem sie ausgebildet sind, von der Stützwand 6 weg gebogen und eine gleiche Biegung der Glasplatte 40 bewirkt.Now the walking beam 3 is moved upwards, thereby lifting the glass plate 40 from the rollers 3. Now the wall 15 of the glass plate 40 is approximated. The angle rail 32, which is attached to the end of the piston rod 46a of the pressure medium cylinder 46 and has previously been advanced, is carried along until it meets a fixed stop (not shown) attached to the base frame 1. With further forward movement of the wall 15, the piston rod 46a is pushed into the pressure medium cylinder 46 until the wall 15 meets the glass plate 40. In this position, which is a measure of the thickness of the glass plate 40, the piston rod 46a is locked in the pressure medium cylinder 46. Now the glass plate 40 is sucked in by sucking air through the holes 35 in the wall 15, and is moved back together with the wall 15 on which it hangs and is supported at the lower edge by the supports 19 which have meanwhile been raised. Simultaneously with the suction through the bores 35, but now at the latest, e.g. controlled by a sensor that determines the height of the glass plate 40, activates those suction devices 21 that are completely covered by the glass plate 40: they additionally suck the glass plate 40. If the suction cups 21 have sucked onto the outer surface of the glass plate 40, the sheet 50 on which they are formed is bent away from the supporting wall 6 and causes the glass plate 40 to bend in the same way.

Währenddessen werden die Auflager 4 abgesenkt und auf den Rollen 3 wird eine weitere, gleich große, jedoch mit einem Abstandhalter 41 belegte Glasplatte 42 herangefördert, deckungsgleich zur Glasplatte 40 positioniert und durch die Auflager 4 von den Rollen 3 abgehoben. Der Abstandhalter 41 ist beidseits mit einem Klebemittel beschichtet.In the meantime, the supports 4 are lowered and on the rollers 3 a further glass plate 42 of the same size but covered with a spacer 41 is conveyed, positioned congruently with the glass plate 40 and through which Support 4 lifted off the rollers 3. The spacer 41 is coated on both sides with an adhesive.

Nunmehr wird die Wand 15 der Wand 6 angenähert, bis die Glasplatte 40 (in der Sprache der Patentansprüche ist es die "zweite" Glasplatte) zur Anlage am Abstandhalter 41 gelangt. Dadurch wird der Zwischenraum zwischen den beiden Glasplatten 40 und 42 geschlossen bis auf eine spaltförmige Öffnung 43 längs dem auslaufseitigen Rand der Glasplatte 40. Durch Betätigen des Druckmittelzylinders 49 wird nunmehr das Abdeckelement 26 zur Anlage am auslaufseitigen Rand der Isolierglasscheibe gebracht (Figur 3) und danach durch Betätigen des Druckmittelzylinders 39 die Abdeckleiste 27 zur Anlage am unteren Rand der Isolierglasscheibe 44 gebracht. Durch die Arretierung der Kolbenstange 46a ist dabei gewährleistet, das die eine Randwulst der Dichtung 34 stets in gleicher Lage auf den Rand des Blechs 50 trifft, unabhängig von der Dicke der Glasplatte 40.Now the wall 15 is brought closer to the wall 6 until the glass plate 40 (in the language of the claims it is the "second" glass plate) comes to rest on the spacer 41. As a result, the space between the two glass plates 40 and 42 is closed except for a gap-shaped opening 43 along the outlet-side edge of the glass plate 40. By actuating the pressure medium cylinder 49, the cover element 26 is now brought into contact with the outlet-side edge of the insulating glass pane (FIG. 3) and then by actuating the pressure medium cylinder 39, the cover strip 27 is brought into contact with the lower edge of the insulating glass pane 44. The locking of the piston rod 46a ensures that the one edge bead of the seal 34 always hits the edge of the sheet 50 in the same position, regardless of the thickness of the glass plate 40.

Anschließend wird durch die Düse 31 das Gas in die Isolierglasscheibe 44 eingeleitet, welches die darin vorhandene Luft nach oben hin verdrängt. Gesteuert durch einen Sensor, welcher auf die Höhe der Isolierglasscheibe anspricht, wird die erste Absaugdüse 33, welche oberhalb der Isolierglasscheibe liegt, aktiviert; sie saugt wenigstens einen Teil der verdrängten Luft bzw. des verdrängten Luft-Gas-Gemisches ab und leitet es zu einem nicht dargestellten Meßfühler, welcher den Restsauerstoffgehalt im abgesaugten Luft-Gas-Gemisch feststellt. Ist der Restsauerstoffgehalt unter einen vorgegebenen Wert abgesunken, wird der Gasfüllvorgang beendet und die Isolierglasscheibe geschlossen, indem die Saugvorrichtung 20 drucklos gemacht wird (dann federt die Glasplatte 40 gegen den Abstandhalter 41 und verschließt die Isolierglasscheibe sehr rasch) oder indem der hintere Schlauch 62 drucklos gemacht wird (dann federt die Glasplatte 40 etwas sanfter gegen den Abstandhalter 41). Anschließend kann die Isolierglasscheibe 44 in der Vorrichtung verpreßt werden, wodurch die Klebeverbindung zwischen dem Abstandhalter 41 und den beiden Glasplatten 40 und 42 gasdicht wird und die Isolierglasscheibe ihre Solldicke annimmt. Zu diesem Zweck wird die Wand 15 und mit ihr die daran befestigte Saugvorrichtung durch die Druckmittelzylinder 13 gegen die Stützwand 6 gezogen. Damit die biegsame Saugvorrichtung 20 dem Preßdruck nicht ausweichen kann, wird gleichzeitig der Schlauch 61 zur rückseitigen Unterstützung der Saugvorrichtung 20 aufgeblasen.Then the gas is introduced through the nozzle 31 into the insulating glass pane 44, which displaces the air therein upwards. Controlled by a sensor which responds to the height of the insulating glass pane, the first suction nozzle 33, which lies above the insulating glass pane, is activated; it sucks off at least part of the displaced air or the displaced air-gas mixture and directs it to a sensor, not shown, which detects the residual oxygen content in the extracted air-gas mixture. If the residual oxygen content has dropped below a specified value, the gas filling process is started ended and the insulating glass pane closed by depressurizing the suction device 20 (then the glass plate 40 springs against the spacer 41 and closes the insulating glass pane very quickly) or by depressurizing the rear tube 62 (then the glass plate 40 springs somewhat more gently against the spacer 41). The insulating glass pane 44 can then be pressed in the device, as a result of which the adhesive connection between the spacer 41 and the two glass plates 40 and 42 becomes gas-tight and the insulating glass pane assumes its desired thickness. For this purpose, the wall 15 and with it the suction device attached to it are pulled through the pressure medium cylinders 13 against the supporting wall 6. So that the flexible suction device 20 cannot avoid the pressing pressure, the hose 61 is simultaneously inflated to support the suction device 20 from the rear.

Das Abdeckelement 26 wird in dieser Phase nicht mehr benötigt; es wird durch Herunterschwenken der Abdeckleiste 27 und durch eine kombinierte Bewegung in Förderrichtung und quer zur Förderrichtung aus dem Förderweg herausbewegt in seine zurückgezogene Endlage, wie in Figur 4 dargestellt.The cover element 26 is no longer required in this phase; it is moved out of the conveying path by swiveling down the cover strip 27 and by a combined movement in the conveying direction and transversely to the conveying direction, as shown in FIG. 4.

Nach dem Verpressen wird die Wand 15 von der Stützwand 6 wieder entfernt, die Auflager 4 und 19 werden abgesenkt und die Isolierglasscheibe 44 wird auf den Rollen 3 stehend und gegen die Luftkissenwand 6 gelehnt abgefördert.After the pressing, the wall 15 is removed from the supporting wall 6 again, the supports 4 and 19 are lowered and the insulating glass pane 44 is conveyed standing on the rollers 3 and leaning against the air cushion wall 6.

Gewerbliche Anwendbarkeit:Industrial applicability:

Das erfindungsgemässe Verfahren und die erfindungsgemässen Vorrichtungen sind für die Herstellung von Isolierglasscheiben bestimmt und geeignet.The method according to the invention and the devices according to the invention are intended and suitable for the production of insulating glass panes.

Claims (28)

  1. A process of assembling insulating glass panes, wherein an interior space is provided between pairs of glass plates (40, 42), which are spaced apart and adhesively joined along their edges by a framelike spacer (41) and which during their assembling are in contact on their outside surfaces with positioning surfaces (28, 29), and wherein said interior space are filled with a gas other than air, in that
    - at least one of the glass plates (40) is elastically flexed along an edge of the glass plate (40),
    - the spacer (41) is attached to one of the glass plates (hereinafter called the "first" glass plate 42 ) before or during or after the flexing of one the glass plates (40),
    - the spacer is attached to the other glass plate (hereinafter called the "second" glass plate 40) while the flexing is maintaind to keep open an access opening to the interior space between the glass plates (40, 42),
    - the gas is admitted to the interior space through the access opening thus provided, and
    - the access opening is closed in that the resilient flexing is eliminated,
       characterized in that the glas plate (40) together with the positioning surface (29) contact-ing it is flexed so that the outside surface of the glass plate is concave there.
  2. A process of assembling insulating glass panes, wherein an interior space is provided between pairs of glass plates (40, 42) which are spaced apart and adhesively joined along their edges by a framelike spacer (41) and which during their assembling are in contact on their outside surfaces with positioning surfaces (28, 29), and wherein said interior space are filled with a gas other than air,
    - the spacer (41) is attached to one of the glass plates (described hereinafter as the "first" glass plate 42) and subsequently to the other glass plate (described hereinafter as the "second" glass plate 40),
    - at least one of the glass plates (40) is resiliently flexed along an edge of the glass plate (40) to provide an access opening to the interior space between the glass plates (40, 42),
    - a gas is introduced into the interior space through the access opening thus provided, and
    - the resilient flexing is eliminated to close the access opening,
       characterized in that the glass plate (40) together with the positioning surface (29) contacting it is flexed so that the outside surface of the glass plate is concave there.
  3. A process according to claim 1 or 2, characterized in that the glass plate (40) to be flexed is sucked through the positioning surface (29) against the positioning surface (29).
  4. A process according to any of the preceding claims, characterized in that only one of the glass plates (40, 42) is flexed.
  5. A process according to claims 1 and 4, characterized in that only the second glass plate (40) is flexed.
  6. A process according to claim 5, characterized in that the second glass plate (40) is flexed before it is joined to the spacer (41).
  7. A process according to any of the preceding claims, characterized in that the access opening to the interior space between the two glass plates (40, 42) is partly sealed at the edges of the glass plates (40, 42) during the introduction of the gas.
  8. A process according to claim 3, characterized in that the glass plate (40) concerned is sucked in a striplike partial region of its outside surface, which region extends on the marginal portion of the glass plate (40) substantially from one corner of the glass plate (40) to the other.
  9. A process according to any of the preceding claims, characterized in that the gas is introduced into the interior space between the two glass plates (40, 42) while they stand upright or are inclined and that the gas is introduced from below and displaces the air upwardly.
  10. An apparatus for assembling insulating glass wherein an interior space is provided between pairs of glass plates (40, 42), which are spaced apart and adhesively Joined along their edges by a framelike spacer (41) and wherein said interior space is filled with a gas other than air, comprising
       backing means (6) for supporting and positioning the glass plates (40, 42),
       retaining means (15), which are parallel to the backing means (6) and arranged at a variable distance therefrom and serve to retain and position one of the glass plates (40) at a distance from the other glass plate (42), wherein either the backing means (6) or the retaining means (15) or both define a positioning surface (29), which is intended to contact the outside surface of one glass plate (40) and in which the forward surface of an elongate suction device (20) is disposed, which is directed toward the glass plate (40), and
       means (31) for supplying the gas,
       characterized in that the suction device (20) is arranged on the positioning surface (29) in a resiliently deflectable portion thereof, which is attached to the retaining means (15) and/or to the backing means (6), and said portion is engaged by a pulling and/or pushing means (52 to 56) for flexing the portion.
  11. An apparatus acoording to claim 10, characterized in that the resiliently deflectable portion is a marginal portion of the retaining means (15) and/or of the backing means (6).
  12. An apparatus according to claim 10 or 11, characterized in that the retaining means (15) are a wall provided with means (35) for holding the one glass plate (40) in position.
  13. An apparatus according to any of claims 10 to 12, characterized in that for processing glass plates (40, 42) standing on edge the backing means (6) extend above a horizontal conveyor (3) and are slightly rearwardly inclined to support the glass plates (40, 42) standing on the conveyor, and that the means (31) for supplying the gas are arranged on the level of the conveyor (3) or above the conveyor (3) at a variable distance from the conveyor (3).
  14. An apparatus according to claim 12, characterized in that the holding means of the wall (15) consist of suction means (35).
  15. An apparatus according to claim 10, characterized in that a row consisting of a plurality of suction cups (21) is arranged in the elongate suction device (20).
  16. An apparatus according to claims 13 and 15, characterized in that the row of suction cups (21) extends at right angles to the direction of conveyance (25).
  17. An apparatus according to claim 15 or 16, characterized in that the suction cups (21) directly adjoin each other.
  18. An apparatus according to claim 15, 16 or 17, characterized in that the suction cups (21) are adapted to be activated individually or in groups.
  19. An apparatus according to any of claims 10 to 18, characterized in that the backing means (6) consist of an air cushion wall having openings through which the air can selectively be blown or sucked.
  20. An apparatus according to any of claims 10 to 19, characterized in that the mean (31) for supplying the gas have an elongate mouth (37), which is intended to engage the edges of the glass plates (40, 42) or the edge of one glass plate (40) and the spacer (41).
  21. An apparatus according to any of claims 10 to 20, characterized in that exhausting means (33) are provided, which are intended to engage the edges of the glass plates (40, 42) or the edge of one glass plate (40) and the spacer (41).
  22. An apparatus according to claims 20 and 21, characterized in that a covering element (26) is provided, which serves to obstruct the escape of gas from the interior space between the glass plates (40, 42) and by which the access opening that has been formed along the edge along which the glass plate (40) has been deflected is covered throughout its length, and the means (31) for supplying the gas and the exhausting means (33) are both integrated in said covering element (26).
  23. An apparatus according to claim 22, characterized in that a row of exhaust openings (33), which are adapted to be activated individually or in groups, are provided in the covering element (26).
  24. An apparatus according to claim 22 or 23, characterized in that a short covering bar (27) is pivoted to the covering element (26) at one end thereof and in its effective position extends at right engles to the covering element (26).
  25. An apparatus according to any of claims 10 to 24, characterized in that the suction device (20) comprises a sheet metal element (50)-, which has suction openings (68) and is unilaterally gripped at the delivery-side end of the retaining means (15) and on its forward surface carries a layer (66) of an elastomeric material and close to its delivery-side edge is engaged on its rear surface by pulling and/or pushing means (52 to 56).
  26. An apparatus according to claim 25, characterized in that the pulling and/or pushing means (52 to 56) articulatedly engage the sheet metal element (50).
  27. An apparatus according to claim 25 or 26, characterized in that its flexing behavior is adapted to that of the glass plate (42).
  28. An apparatus according to claim 27, characterized in that the sheet metal element is a steel plate, which is 4 to 5 mm thick.
EP91912375A 1990-07-13 1991-07-12 Process and device for assembling insulating glass panes filled with a gas other than air Expired - Lifetime EP0539407B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4022185 1990-07-13
DE4022185A DE4022185A1 (en) 1990-07-13 1990-07-13 METHOD AND DEVICE FOR ASSEMBLING INSULATING GLASS PANELS FILLED WITH A GAS DIFFERENT FROM AIR
PCT/EP1991/001307 WO1992001137A1 (en) 1990-07-13 1991-07-12 Process and device for assembling insulating glass panes filled with a gas other than air

Publications (2)

Publication Number Publication Date
EP0539407A1 EP0539407A1 (en) 1993-05-05
EP0539407B1 true EP0539407B1 (en) 1994-08-10

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Application Number Title Priority Date Filing Date
EP91912375A Expired - Lifetime EP0539407B1 (en) 1990-07-13 1991-07-12 Process and device for assembling insulating glass panes filled with a gas other than air

Country Status (7)

Country Link
US (1) US5350469A (en)
EP (1) EP0539407B1 (en)
JP (1) JP3138963B2 (en)
AT (1) ATE109863T1 (en)
CA (1) CA2087187C (en)
DE (2) DE4022185A1 (en)
WO (1) WO1992001137A1 (en)

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DE19962034C1 (en) * 1999-12-22 2001-03-22 Lenhardt Maschinenbau Edge joint sealing device for spaced glass panels e.g. for double glazing unit assembly machine, uses barrier on outside of glass panel edges and barrier asociated with edge spacer between glass panels
DE10138346A1 (en) * 2001-08-03 2003-04-24 Lenhardt Maschinenbau Device for assembling insulating glass panes
DE102005044861B3 (en) * 2005-09-13 2007-02-15 Lenhardt Maschinenbau Gmbh Filling insulation glass disks method e.g. for gas different from air, involves filling two glass tablets with different gas, in device having two opposite plates and parallel plates are mutually variable in distance to each other
DE102010035748A1 (en) 2010-04-29 2011-11-03 Bystronic Lenhardt Gmbh Method for assembling insulating glass panes, which have three glass plates parallel to each other

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EP0406325B2 (en) * 1988-05-04 1997-07-16 Lenhardt Maschinenbau GmbH Process and device for filling insulating glass panes with a heavy gas
DE4212256C2 (en) * 1992-04-11 1998-06-04 Lenhardt Maschinenbau Device for assembling two insulating glass panes which are filled with a gas other than air
DE4231424C2 (en) * 1992-09-19 1998-04-09 Lenhardt Maschinenbau Method and device for assembling insulating glass panes, the glass panels of which are held at a distance by a plastic spacer and glued to one another
AT399499B (en) * 1992-12-15 1995-05-26 Lisec Peter METHOD FOR FILLING INSULATING GLASS DISCS WITH A GAS DIFFERENT FROM AIR
DE4345461C2 (en) * 1992-12-18 2000-08-03 Peter Lisec Insulating glazing gas filling process
DE9302744U1 (en) * 1992-12-18 1994-05-19 Lisec Peter Device for filling insulating glass panes with a gas other than air
DE4315986C2 (en) * 1993-05-13 1995-09-21 Eberhard Halle Method and device for manufacturing an insulating glass unit
DE4437998C2 (en) * 1994-02-01 1999-07-22 Lenhardt Maschinenbau Device for assembling insulating glass panes
AT404132B (en) * 1994-03-24 1998-08-25 Lisec Peter DEVICE FOR FILLING INSULATING GLASS DISC WITH FILLING GAS
EP0674085B1 (en) * 1994-03-24 1998-05-20 Peter Lisec Apparatus for filling insulating glazing with a heavy gas
DE4419052A1 (en) * 1994-05-31 1995-12-07 Dcl Glas Consult Gmbh Method of filling the area between glass sheets with a gas
GB2295415B (en) * 1994-11-22 1998-05-27 Jurras Ltd A process for producing double glazing panels
US5573618A (en) * 1994-12-23 1996-11-12 Cardinal Ig Company Method for assembling custom glass assemblies
US5805330A (en) * 1996-03-15 1998-09-08 Gentex Corporation Electro-optic window incorporating a discrete photovoltaic device
US6433913B1 (en) 1996-03-15 2002-08-13 Gentex Corporation Electro-optic device incorporating a discrete photovoltaic device and method and apparatus for making same
DE19617198A1 (en) * 1996-04-29 1997-11-13 Lenhardt Maschinenbau Process for the production of insulating glass panes with thermoplastic spacers
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US6916392B2 (en) 2001-06-21 2005-07-12 Cardinal Ig Company Producing and servicing insulating glass units
US6606837B2 (en) * 2001-08-28 2003-08-19 Cardinal Ig Methods and devices for simultaneous application of end sealant and sash sealant
US6804924B2 (en) 2001-10-12 2004-10-19 Cardinal Ig Company Repair of insulating glass units
US20030085238A1 (en) * 2001-11-06 2003-05-08 Segro Bradley A Apparatus for dosing liquid gas into a multipane gas unit
US6793971B2 (en) 2001-12-03 2004-09-21 Cardinal Ig Company Methods and devices for manufacturing insulating glass units
US7001464B1 (en) 2003-03-05 2006-02-21 Erdman Automation Corporation System and process for glazing glass to windows and door frames
DE102004032604B4 (en) * 2004-07-06 2006-05-18 Lenhardt Maschinenbau Gmbh Method and apparatus for assembling a solar cell module
DE102006018333A1 (en) * 2006-04-19 2007-10-25 Karl Lenhardt Apparatus for assembling insulating glass panes filled with a gas other than air
US8235076B2 (en) * 2009-02-02 2012-08-07 American Air Liquide, Inc. Method and system for optimized filling of an enclosure
DE102009035002A1 (en) * 2009-07-24 2011-01-27 Bystronic Lenhardt Gmbh Method for producing an insulating glass pane
DE102009048641B4 (en) * 2009-09-30 2014-02-06 Bystronic Lenhardt Gmbh Method for assembling a window sash with integrated insulating glass pane
FR2956149B1 (en) * 2010-02-08 2012-01-27 Saint Gobain PROCESS FOR MANUFACTURING TRIPLE GLAZING FILLED WITH GAS
US8627856B2 (en) * 2010-06-28 2014-01-14 Integrated Automation Systems, Llc Continuous gas filling process and apparatus for fabrication of insulating glass units
AT510165B1 (en) * 2010-09-23 2012-02-15 Inova Lisec Technologiezentrum METHOD FOR PRODUCING INSULATED GLASS FILLED WITH AIR-DIFFERENT GAS
FR2984300B1 (en) * 2011-12-15 2014-11-21 Saint Gobain METHOD FOR MANUFACTURING MULTIPLE GLAZING FILLED WITH GAS
US9656356B2 (en) 2013-01-22 2017-05-23 Guardian Ig, Llc Window unit assembly station and method
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WO2016170079A1 (en) * 2015-04-22 2016-10-27 Saint-Gobain Glass France Method and device for producing a triple insulated glazing
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CN114014561B (en) * 2021-12-01 2022-07-12 南京苏洋玻璃有限公司 Coating vacuum cavity welding auxiliary equipment for LOW-E glass production

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DE19962034C1 (en) * 1999-12-22 2001-03-22 Lenhardt Maschinenbau Edge joint sealing device for spaced glass panels e.g. for double glazing unit assembly machine, uses barrier on outside of glass panel edges and barrier asociated with edge spacer between glass panels
EP1111182A2 (en) 1999-12-22 2001-06-27 Lenhardt Maschinenbau GmbH Apparatus for sealing an edge joint of a still open insulating glazing panel in an assembly device therefor
DE10138346A1 (en) * 2001-08-03 2003-04-24 Lenhardt Maschinenbau Device for assembling insulating glass panes
DE10138346C2 (en) * 2001-08-03 2003-12-04 Lenhardt Maschinenbau Device for assembling insulating glass panes
DE102005044861B3 (en) * 2005-09-13 2007-02-15 Lenhardt Maschinenbau Gmbh Filling insulation glass disks method e.g. for gas different from air, involves filling two glass tablets with different gas, in device having two opposite plates and parallel plates are mutually variable in distance to each other
DE102010035748A1 (en) 2010-04-29 2011-11-03 Bystronic Lenhardt Gmbh Method for assembling insulating glass panes, which have three glass plates parallel to each other
WO2011134565A1 (en) 2010-04-29 2011-11-03 Bystronic Lenhardt Gmbh Method for assembling insulating glass panes which have three glass panels that are parallel to each other
DE102010035748B4 (en) * 2010-04-29 2013-01-03 Bystronic Lenhardt Gmbh Method for assembling insulating glass panes, which have three glass plates parallel to each other
CN102959172A (en) * 2010-04-29 2013-03-06 百超伦哈特有限公司 Method for assembling insulating glass panes which have three glass panels
CN102959172B (en) * 2010-04-29 2014-12-24 百超伦哈特有限公司 Method for assembling insulating glass panes which have three glass panels

Also Published As

Publication number Publication date
CA2087187A1 (en) 1992-01-14
WO1992001137A1 (en) 1992-01-23
DE4022185A1 (en) 1992-01-16
JP3138963B2 (en) 2001-02-26
CA2087187C (en) 2001-04-24
US5350469A (en) 1994-09-27
EP0539407A1 (en) 1993-05-05
ATE109863T1 (en) 1994-08-15
JPH05508609A (en) 1993-12-02
DE59102519D1 (en) 1994-09-15

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