EP0444391B1 - Method and device for filling the inner space of insulating glass clots with gas - Google Patents

Method and device for filling the inner space of insulating glass clots with gas Download PDF

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Publication number
EP0444391B1
EP0444391B1 EP90890281A EP90890281A EP0444391B1 EP 0444391 B1 EP0444391 B1 EP 0444391B1 EP 90890281 A EP90890281 A EP 90890281A EP 90890281 A EP90890281 A EP 90890281A EP 0444391 B1 EP0444391 B1 EP 0444391B1
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Prior art keywords
insulating glass
air
clot
gas
probe
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EP90890281A
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German (de)
French (fr)
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EP0444391A3 (en
EP0444391B2 (en
EP0444391A2 (en
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Peter Lisec
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window 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
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating 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
    • E06B3/6775—Evacuating or filling the gap during assembly

Definitions

  • the invention relates to a method for filling the interior of insulating glass blanks, which consist of at least two glass panes and a spacer frame arranged between them, with a gas other than air, in particular with argon, wherein a gap-shaped opening for the supply of gas and the removal of air or air-gas mixture is formed by holding one of the glass panes of the insulating glass blank with elastic bending of this glass pane at a distance from the spacer frame when the insulating glass pane blank is pressed in a press between press plates in a substantially vertical manner after assembling the pane package, whereby by the gap-shaped opening thus formed is blown into the interior of the insulating glass blank and gas or air or air-gas mixture is withdrawn from the interior of the insulating glass blank (WO 89/11021).
  • Such filling gases are e.g. Argon or a so-called heavy gas such as sulfur hexafluoride.
  • a mode of operation in which the gas exchange is to take place through a gap in the region of the lower horizontal leg of a spacer frame is known from DE-A 34 02 323.
  • the invention has for its object to improve the method known from WO 89/11021 in such a way that not only the actual gas exchange takes place simply and quickly, but also that the production and subsequent closing of holes in the spacer frame is avoided without the Disadvantages of the methods described above, in which the gas exchange takes place via a gap in the region of the lower horizontal leg of the spacer frame, occur.
  • this object is achieved in that one of the glass panes of the insulating glass blank is held in the area of only a lower corner of the insulating glass blank at a distance from the spacer frame, while the remaining part of this glass pane is held in contact with the spacer frame by the pressure plates, that gas is used by means of a probe is blown into the interior of the insulating glass blank with a flow direction oriented essentially parallel to the lower horizontal leg of the spacer frame and that air or air-gas mixture is drawn off from the interior of the insulating glass blank by means of a probe through a region of the gap-shaped opening, which is above the Area of the gap-shaped opening through which gas is blown into the interior of the insulating glass blank.
  • the preferred procedure is to compress the pane packet essentially vertically and one pane in the area of one of the lower corners at a distance from one another Spacer frame holds - is kept open, the gas exchange can be carried out without the disadvantages of the above-described, known methods of working without making holes in the spacer frame.
  • the gas exchange is particularly quick and simple if the procedure is such that a gas stream which is aligned essentially parallel to the lower, horizontal leg of the spacer frame is blown into the interior of the insulating glass blank from the probe for supplying gas.
  • This method of operation mixing of the supplied gas with the outflowing air or air-gas mixture is largely prevented, since the gas which is intended to replace the air in the interior of the pane widens from the side opposite the filling point to the filling side moving progressively and gradually pushing the air-gas mixture or the air towards the suction probe, compressing it.
  • the procedure is such that air or air-gas mixture is withdrawn from the interior of the insulating glass blank to such an extent that there is a pressure in the interior of the insulating glass blank which is higher than the ambient pressure.
  • This procedure has the advantage that special sealing measures are unnecessary and yet no air is sucked into the interior of the insulating glass blank, the resulting losses being negligible, especially if the interior of the insulating glass blank is filled with argon or a similarly cheap gas.
  • the process according to the invention can be carried out in such a way that the insulating glass blank is also pressed in the region of the open corner.
  • a probe is used for withdrawing air or air-gas mixture, which is arranged above the probe for supplying gas and one which is directed obliquely upwards and from the probe for supply has gas-pointing mouth for withdrawing air or air-gas mixture from the interior of the insulating glass blank.
  • the gas introduced by one probe for example argon
  • the probes are not introduced into the interior of the insulating glass blank through holes, but through the open area in the corner, they can also be used in the method according to the invention if the probes are in different directions, e.g. point away from each other, are simultaneously introduced into the interior of the insulating glass pane.
  • the amount of gas used in the process according to the invention can be determined simply by continuing the gas exchange until the proportion of air in the air-gas mixture extracted via the probe falls below a predetermined value.
  • the volume of the interior of the insulating glass blank can be calculated and a quantity of gas can be introduced into the interior of the insulating glass pane that corresponds to the calculated volume by a predetermined fraction of this volume.
  • the invention further relates to a device which is particularly suitable for carrying out the method according to the invention.
  • the device for carrying out the method is distinguished by two pressure plates which can be approximated to one another for pressing the essentially vertically standing insulating glass pane blank, with a probe for introducing gas into the space between the glass panes of the insulating glass pane blank and with a probe for extracting air or air-gas mixture from the interior of the insulating glass blank, a suction device being provided on one of the pressure plates, with which one of the glass sheets of the insulating glass blank is held at a distance from the spacer frame by being bent away from the spacer frame with elastic deformation in that the suction device is provided in the area of a lower corner of one of the plates of the press, and that the area of the press plate in which the suction device is provided is pivotally connected to the remaining part of the press plate.
  • the press for example, one of the designs known from DE-PS 31 30 645
  • the disk package is pressed and the cover disk is held in a lower corner 2 of the disk package, preferably the front, lower corner, at a distance from the spacer frame and / or from the spacer frame lifted off or held at a distance from the spacer frame.
  • two probes 4 and 5 which are mounted close together on an angled support 3 and via which the gas exchange takes place, are introduced into the interior of the insulating glass blank.
  • the probe 4 supplying the special gas e.g. argon
  • the probe 4 supplying the special gas is aligned horizontally and blows the gas flow into the space between the glass panes at high speed parallel to the lower, horizontal leg of the spacer frame.
  • a seal elastic foam
  • the gas exchange is carried out in such a way that there is always at least a slight excess pressure in the interior of the insulating glass blank, so that gas can be exchanged continuously and any excess air or gas-air mixture is displaced from the interior, which is not a problem since the filling gas, especially if it is argon, is not expensive.
  • the gas flow follows the inner circumference of the spacer frame and compresses towards the center, so that air is gradually compressed in an increasingly smaller area and displaced from the interior of the insulating glass blank , as indicated in FIGS. 1 to 3 by the "front" 6 between the filling gas and the air.
  • the gas filling is controlled either by measuring the residual oxygen content in the gas-air mixture drawn from the interior of the insulating glass pane blank, by determining the composition of the air-gas mixture in the interior of the insulating glass pane blank and / or by determining (calculating) the volume of the pane interior and Supply of a correspondingly metered amount of gas, a certain loss due to the prevailing excess pressure being taken into account by the fact that the calculated volume amount by an example empirically determined fraction is increased.
  • Advantages of the method according to the invention are that it is possible to work continuously and does not have to be constantly switched between blowing and suctioning.
  • the drilling and subsequent closing of openings in the spacer frame through which the probes are to be inserted are dispensed with in the working method according to the invention.
  • Another advantage is that the mixing between the supplied gas and air in the interior of the insulating glass blank is kept within limits, since such mixing only occurs to a limited extent.
  • a press schematically indicated in FIG. 4 has two press plates 10 and 11 which are movable relative to one another, as is known per se for presses for pressing insulating glass blanks.
  • the construction of the press with the plates 10 and 11 and the drive for moving the movable press plate, e.g. the plate 11 can have a construction as is known per se. Examples of known pressing devices which can be used in the present context are described in AT-PS 385 499 or in Austrian patent application A 2956/87, which was published on June 15, 1990.
  • only a lower corner region 12 of the press plate 11 can be pivoted with respect to the press plate 11 and is connected to it via hinges 13 and 14.
  • a pressure medium cylinder 15 is provided, which is connected on the one hand at 16 to the press plate 11 and on the other hand via an extension 17 projecting from the corner area 12.
  • the corner region 12 can be pivoted back and forth in the direction of the double arrow 18 (FIG. 4).
  • two suction heads 19 and 20 are provided in the corner region 12 of the pressure plate 11 in the exemplary embodiment shown, and can be subjected to negative pressure via lines 21, 22.
  • the suction heads 19 and 20 lie against the one glass pane of the insulating glass blank 1 so that in its corner 2 the one glass pane is lifted from the spacer frame located between the two glass panes of the insulating glass blank 1 by actuating the pressure medium cylinder 15 and pivoting the corner region 12 of the press plate 11 .
  • the probe 4 and the probe 5 are inserted into the opening formed in this way, the angular support 3 resting against the insulating glass blank 1 in the region of the corner 1 'thereof, as mentioned above, on the outer circumference of the insulating glass blank 1.
  • an actuating device (not shown in detail) for the holder 3 is provided, and the pressure medium cylinder 15 is actuated so that the corner region 12 of the plate 11 swings back again and thus the insulating glass blank is pressed in the area of the initially still open corner 2.
  • the press is opened by moving the pressing plate 11 away from the pressing plate 10 and conveying the insulating glass blank 1 filled with gas, for example argon, from the press and, for example, to a sealing station.
  • gas for example argon

Abstract

In order to fill the interior of an insulating glass pane (1) with argon, during pressing of the insulating glass pane (1) one glass pane is held in the region of a corner (2) at a distance from the spacer frame by holding this glass pane at a distance from the spacer frame by swivelling a part (12) of the press plate (11) using suction heads (19, 20) provided on this part (12). Inserted through the gap thus formed are a probe (4) for supplying argon and a probe (5) for extracting air from the interior of the insulating glass pane. The probe (4) through which argon is blown into the interior is aligned parallel to the lower horizontal limb of the insulating glass pane (1), and the other probe (5), via which air or air/argon mixture is extracted, has an opening which points obliquely upwards, i.e. away from the other probe (4). As a result, it is possible to produce insulating glass panes (1) having a filling of the interior other than air without it being necessary to bore holes in the spacer frame, the gas exchange taking place such that argon is mixed with the air displaced from the interior only to a very limited extent. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Füllen des Innenraumes von Isolierglasscheibenrohlingen, die aus wenigstens zwei Glasscheiben und einem zwischen diesen angeordneten Abstandhalterrahmen bestehen, mit einem anderen Gas als Luft, insbesondere mit Argon, wobei eine spaltförmige Öffnung für das Zuführen von Gas und das Abziehen von Luft bzw. Luft-Gas-Gemisch gebildet wird, indem eine der Glasscheiben des Isolierglasscheibenrohlings unter elastischem Biegen dieser Glasscheibe im Abstand vom Abstandhalterrahmen gehalten wird, wenn der Isolierglasscheibenrohling nach dem Zusammenstellen des Scheibenpaketes in einer Presse zwischen Preßplatten im wesentlichen vertikal stehend gepreßt wird, wobei durch die so gebildete, spaltförmige Öffnung in den Innenraum des Isolierglasscheibenrohlings Gas eingeblasen und Luft bzw. Luft-GasGemisch aus dem Innenraum des Isolierglasscheibenrohlings abgezogen wird (WO 89/11021).The invention relates to a method for filling the interior of insulating glass blanks, which consist of at least two glass panes and a spacer frame arranged between them, with a gas other than air, in particular with argon, wherein a gap-shaped opening for the supply of gas and the removal of air or air-gas mixture is formed by holding one of the glass panes of the insulating glass blank with elastic bending of this glass pane at a distance from the spacer frame when the insulating glass pane blank is pressed in a press between press plates in a substantially vertical manner after assembling the pane package, whereby by the gap-shaped opening thus formed is blown into the interior of the insulating glass blank and gas or air or air-gas mixture is withdrawn from the interior of the insulating glass blank (WO 89/11021).

Solche Füllgase sind z.B. Argon oder ein sogenanntes Schwergas, wie Schwefelhexafluorid.Such filling gases are e.g. Argon or a so-called heavy gas such as sulfur hexafluoride.

Für das Füllen des Innenraumes von Isolierglasscheiben mit einem von Luft abweichenden Gas, z.B. mit Argon oder mit Schwefelhexafluorid sind schon die verschiedensten Techniken vorgeschlagen worden. Bei einer der bekannten Arbeitsweisen werden Sonden zum Zuführen des Gases, das die Luft im Innenraum der Isolierglasscheibe ersetzen soll, und eine Sonde zum Absaugen von Luft- bzw. Luft- Gas-Gemisch durch im Abstandhalter zwischen den Glastafeln der Isolierglasscheibe vorgesehene Bohrungen eingeführt und dann der Gastausch ausgeführt. Diese Arbeitstechnik ist insoferne nachteilig, als im Abstandhalter Löcher gebohrt werden müssen, die dann nach beendetem Gastausch wieder dicht verschlossen werden müssen. Derartige Arbeitstechniken sind beispielsweise aus der DE-C 30 25 122, der DE-A 31 17 256 oder der US-A 2 756 467 bekannt. Verfahren zum Füllen von Isolierglasscheiben mit Sondergas sind auch aus der EP-A-276 647 und 324 333 bekannt, welche Verfahren das Herstellen und nachträgliche Verschließen von Öffnungen im Abstandhalterrahmen umfassen.For filling the interior of insulating glass panes with a gas other than air, e.g. A wide variety of techniques have already been proposed with argon or with sulfur hexafluoride. In one of the known methods, probes for supplying the gas which is to replace the air in the interior of the insulating glass pane and a probe for extracting air or air-gas mixture are introduced through bores provided in the spacer between the glass plates of the insulating glass pane and then the gas exchange carried out. This working technique is disadvantageous in that holes have to be drilled in the spacer, which then have to be sealed again after the gas exchange has ended. Such working techniques are known for example from DE-C 30 25 122, DE-A 31 17 256 or US-A 2 756 467. Methods for filling insulating glass panes with special gas are also known from EP-A-276 647 and 324 333, which methods include the production and subsequent closing of openings in the spacer frame.

Bei einer anderen Arbeitstechnik wurde vorgeschlagen, den Umstand auszunützen, daß Isolierglasscheiben nach dem Zusammenstellen der Scheibenpakete in Vorrichtungen, wie sie beispielsweise aus der DE-C 28 20 630 oder der DE-C 31 22 736 bekannt sind, am unteren, horizontalen Rand des zusammengestellten Scheibenpaktes zwischen dem Abstandhalterrahmen, der auf einer der beiden Glasscheiben angesetzt ist und der an diesen angelehnten Glastafel einen Spalt aufweisen. Es wurde vorgeschlagen, durch diesen Spalt das Gas, das die Luft im Innenraum der Isolierglasscheibe ersetzen soll, einzuführen (AT-B 368 985).In another working technique, it has been proposed to take advantage of the fact that insulating glass panes, after assembling the pane packs in devices such as are known, for example, from DE-C 28 20 630 or DE-C 31 22 736, are arranged at the lower, horizontal edge of the Disc pact between the spacer frame, which is attached to one of the two glass panes and which have a gap leaning against the glass sheet. It was proposed to introduce the gas that is to replace the air in the interior of the insulating glass pane through this gap (AT-B 368 985).

Eine Arbeitsweise, bei welcher der Gastausch durch einen Spalt im Bereich des unteren horizontalen Schenkels eines Abstandhalterrahmens erfolgen soll, ist aus der DE-A 34 02 323 bekannt.A mode of operation in which the gas exchange is to take place through a gap in the region of the lower horizontal leg of a spacer frame is known from DE-A 34 02 323.

Es ist auch bekannt (WO 89/11021), eine Öffnung für den Gasaustausch in einen Isolierglasscheibenrohling zwischen dem Abstandhalterrahmen und einer der Glasscheiben des Isolierglasscheibenrohlinges dadurch zu bilden, daß beispielsweise im Bereich einer Seitenkante des Isolierglasscheibenrohlinges die eine Glasscheibe von mehreren Saugköpfen unter Ausbilden einer Wölbung in der Glasscheibe vom Abstandhalterrahmen abgehoben wird. In der WO 89/11021 wird auch vorgeschlagen, die eine Glasscheibe an zwei Ekken vom Abstandhalterrahmen wegzubiegen und so zwei einander diagonal gegenüberliegende Öffnungen zu bilden. Die aus der WO 89/11021 bekannte Verfahrensweise ist insoferne nachteilig, als eine nach mehreren Richtungen verlaufende Krümmung entsteht und so eine erhöhte Bruchgefahr der abgehobenen Glasscheibe entsteht. Außerdem sind für das Abheben der Glasscheibe vom Abstandhalterrahmen längs einer Seitenkante oder im Bereich von zwei Ecken hohe Kräfte erforderlich.It is also known (WO 89/11021) to form an opening for gas exchange in an insulating glass blank between the spacer frame and one of the glass panes of the insulating glass blank in that, for example in the region of a side edge of the insulating glass blank, the one glass pane is formed by a plurality of suction heads to form a curvature is lifted from the spacer frame in the glass pane. In WO 89/11021 it is also proposed to bend one glass pane away from the spacer frame at two corners and thus to form two diagonally opposite openings. The procedure known from WO 89/11021 is disadvantageous insofar as a curvature which extends in several directions arises and thus there is an increased risk of breakage of the raised glass pane. In addition, high forces are required to lift the glass pane from the spacer frame along one side edge or in the area of two corners.

Der Erfindung liegt die Aufgabe zugrunde, das aus der WO 89/11021 bekannte Verfahren in der Weise zu verbessern, daß nicht nur der eigentliche Gastausch einfach und rasch erfolgt sondern daß auch das Herstellen und nachträgliche Verschließen von Löchern im Abstandhalterrahmen vermieden wird, ohne daß die Nachteile der oben geschilderten Verfahren, bei welchen der Gasaustausch über einen Spalt im Bereich des unteren horizontalen Schenkels des Abstandhalterrahmens erfolgt, auftreten.The invention has for its object to improve the method known from WO 89/11021 in such a way that not only the actual gas exchange takes place simply and quickly, but also that the production and subsequent closing of holes in the spacer frame is avoided without the Disadvantages of the methods described above, in which the gas exchange takes place via a gap in the region of the lower horizontal leg of the spacer frame, occur.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß eine der Glasscheiben des Isolierglasscheibenrohlinges im Bereich nur einer unteren Ecke des Isolierglasscheibenrohlings im Abstand vom Abstandhalterrahmen gehalten wird, während der übrige Teil dieser Glasscheibe durch die Preßplatten in Anlage an den Abstandhalterrahmen gehalten wird, daß mittels einer Sonde Gas mit einer im wesentlichen parallel zum unteren horizontalen Schenkel des Abstandhalterrahmens ausgerichteten Strömungsrichtung in den Innenraum des Isolierglasscheibenrohlings geblasen wird und daß mittels einer Sonde Luft bzw. Luft-Gas-Gemisch durch einen Bereich der spaltförmigen Öffnung aus dem Innenraum des Isolierglasscheibenrohlings abgezogen wird, der oberhalb des Bereiches der spaltförmigen Öffnung liegt, durch den Gas in den Innenraum des Isolierglasscheibenrohlings eingeblasen wird.According to the invention this object is achieved in that one of the glass panes of the insulating glass blank is held in the area of only a lower corner of the insulating glass blank at a distance from the spacer frame, while the remaining part of this glass pane is held in contact with the spacer frame by the pressure plates, that gas is used by means of a probe is blown into the interior of the insulating glass blank with a flow direction oriented essentially parallel to the lower horizontal leg of the spacer frame and that air or air-gas mixture is drawn off from the interior of the insulating glass blank by means of a probe through a region of the gap-shaped opening, which is above the Area of the gap-shaped opening through which gas is blown into the interior of the insulating glass blank.

Dadurch, daß beim erfindungsgemäßen Verfahren beim Verpressen des aus der Zusammenbaustation kommenden Scheibenpaketes zu einem Isolierglasscheibenrohling im Bereich einer Ecke - bevorzugt geht man so vor, daß man das Scheibenpaket im wesentlichen vertikal stehend verpreßt und die eine Scheibe im Bereich einer der unteren Ecken im Abstand vom Abstandhalterrahmen hält - offengehalten wird, kann der Gastausch ohne die Nachteile der oben geschilderten, bekannten Arbeitsweisen auch ohne das Herstellen von Löchern im Abstandhalterrahmen ausgeführt werden.The fact that in the method according to the invention, when the pane package coming from the assembly station is pressed to form an insulating glass pane blank in the area of a corner, the preferred procedure is to compress the pane packet essentially vertically and one pane in the area of one of the lower corners at a distance from one another Spacer frame holds - is kept open, the gas exchange can be carried out without the disadvantages of the above-described, known methods of working without making holes in the spacer frame.

Der Gastausch erfolgt besonders rasch und einfach, wenn so vorgegangen wird, daß aus der Sonde zum Zuführen von Gas ein im wesentlichen parallel zum unteren, horizontalen Schenkel des Abstandhalterrahmens ausgerichteten Gasstrom in den Innenraum des Isolierglasscheibenrohlinges geblasen wird. Bei dieser Arbeitsweise wird eine Vermischung des zugeführten Gases mit dem abströmenden Luft- bzw. Luft-Gas-Gemisch weitestgehend verhindert, da sich das Gas, welches die Luft im Scheibeninnenraum ersetzen soll, in breiter Front von der der Einfüllstelle gegenüberliegenden Seite auf die Einfüllseite zu fortschreitend bewegt und dabei das Luft-Gas-Gemisch bzw. die Luft nach und nach unter Verdichtung zur Absaugsonde hin drückt.The gas exchange is particularly quick and simple if the procedure is such that a gas stream which is aligned essentially parallel to the lower, horizontal leg of the spacer frame is blown into the interior of the insulating glass blank from the probe for supplying gas. With this method of operation, mixing of the supplied gas with the outflowing air or air-gas mixture is largely prevented, since the gas which is intended to replace the air in the interior of the pane widens from the side opposite the filling point to the filling side moving progressively and gradually pushing the air-gas mixture or the air towards the suction probe, compressing it.

Bei einer Variante des erfindungsgemäßen Verfahrens wird so vorgegangen, daß man Luft bzw. Luft-Gas-Gemisch aus dem Innenraum des Isolierglasscheibenrohlings in einem Ausmaß abzieht, daß während des Gastausches im Innenraum des Isolierglasscheibenrohlings ein Druck herrscht, der höher ist als der Umgebungsdruck. Diese Arbeitsweise hat den Vorteil, daß besondere Abdichtungsmaßnahmen entbehrlich sind und dennoch keine Luft in den Innenraum des Isolierglasscheibenrohlinges eingesaugt wird, wobei die dabei entstehenden Verluste vernachläßigbar sind, insbesondere wenn der Innenraum des Isolierglasscheibenrohlinges mit Argon oder einem ähnlich billigen Gas gefüllt wird.In a variant of the method according to the invention, the procedure is such that air or air-gas mixture is withdrawn from the interior of the insulating glass blank to such an extent that there is a pressure in the interior of the insulating glass blank which is higher than the ambient pressure. This procedure has the advantage that special sealing measures are unnecessary and yet no air is sucked into the interior of the insulating glass blank, the resulting losses being negligible, especially if the interior of the insulating glass blank is filled with argon or a similarly cheap gas.

Nach Beendigung des Gastausches kann bei dem erfindungsgemäßen Verfahren so vorgegangen werden, daß der Isolierglasscheibenrohling auch im Bereich der offen gehaltenen Ecke verpreßt wird.After the gas exchange has ended, the process according to the invention can be carried out in such a way that the insulating glass blank is also pressed in the region of the open corner.

Gemäß einer anderen Variante des erfindungsgemäßen Verfahrens ist vorgesehen, daß man zum Abziehen von Luft bzw. Luft-Gas-Gemisch eine Sonde verwendet, die oberhalb der Sonde zum Zuführen von Gas angeordnet ist und die eine schräg nach oben gerichtete und von der Sonde zum Zuführen von Gas wegweisende Mündung zum Abziehen von Luft bzw. Luft-Gas-Gemisch aus dem Innenraum des Isolierglasscheibenrohlings aufweist. Bei dieser Ausführungsform wird zuverlässig verhindert, daß das durch die eine Sonde eingeführte Gas (beispielsweise Argon) durch die andere Sonde gleich wieder abgesaugt wird.According to another variant of the method according to the invention it is provided that a probe is used for withdrawing air or air-gas mixture, which is arranged above the probe for supplying gas and one which is directed obliquely upwards and from the probe for supply has gas-pointing mouth for withdrawing air or air-gas mixture from the interior of the insulating glass blank. In this embodiment, it is reliably prevented that the gas introduced by one probe (for example argon) is immediately sucked out again by the other probe.

Da beim erfindungsgemäßen Verfahren die Sonden nicht durch Bohrungen, sondern durch den offenen Bereich im Eck in den Innenraum des Isolierglasscheibenrohlinges eingeführt werden, können diese beim erfindungsgemäßen Verfahren auch, wenn die Sonden in unterschiedliche Richtungen, z.B. voneinander wegweisen, gleichzeitig in den Innenraum der Isolierglasscheibe eingeführt werden.Since in the method according to the invention the probes are not introduced into the interior of the insulating glass blank through holes, but through the open area in the corner, they can also be used in the method according to the invention if the probes are in different directions, e.g. point away from each other, are simultaneously introduced into the interior of the insulating glass pane.

Die Menge an Gas, die beim erfindungsgemäßen Verfahren verwendet wird, kann einfach dadurch bestimmt werden, daß man den Gastausch so lange fortsetzt, bis im über die eine Sonde abgesaugten Luft-Gas-Gemisch der Anteil an Luft einen vorgegebenen Wert unterschreitet. Alternativ oder ergänzend kann man das Volumen des Innenraumes des Isolierglasscheibenrohlinges berechnen und in den Innenraum der Isolierglasscheibe eine Menge Gas in den Innenraum einführen, die dem berechneten Volumen vermehrt um einen vorgegebenen Bruchteil dieses Volumens entspricht.The amount of gas used in the process according to the invention can be determined simply by continuing the gas exchange until the proportion of air in the air-gas mixture extracted via the probe falls below a predetermined value. Alternatively or in addition, the volume of the interior of the insulating glass blank can be calculated and a quantity of gas can be introduced into the interior of the insulating glass pane that corresponds to the calculated volume by a predetermined fraction of this volume.

Die Erfindung betrifft weiters eine Vorrichtung, die zur Durchführung des erfindungsgemäßen Verfahrens besonders geeignet ist.The invention further relates to a device which is particularly suitable for carrying out the method according to the invention.

Erfindungsgemäß zeichnet sich die Vorrichtung zum Durchführen des Verfahrens mit zwei Preßplatten, die zum Verpressen des im wesentlichen vertikal stehenden Isolierglasscheibenrohlings einander angenähert werden können, mit einer Sonde zum Einleiten von Gas in den Raum zwischen den Glasscheiben des Isolierglasscheibenrohlings und mit einer Sonde zum Abziehen von Luft bzw. Luft-Gas-Gemisch aus dem Innenraum des Isolierglasscheibenrohlings, wobei an einer der Preßplatten eine Saugvorrichtung vorgesehen ist, mit welcher eine der Glasscheiben des Isolierglasrohlings im Abstand vom Abstandhalterrahmen gehalten wird, indem sie unter elastischer Verformung vom Abstandhalterrahmen weggebogen wird dadurch aus, daß die Saugvorrichtung im Bereich einer unteren Ecke einer der Platten der Presse vorgesehen ist, und daß der Bereich der Preßplatte, in dem die Saugvorrichtung vorgesehen ist, mit dem übrigen Teil der Preßplatte verschwenkbar verbunden ist.According to the invention, the device for carrying out the method is distinguished by two pressure plates which can be approximated to one another for pressing the essentially vertically standing insulating glass pane blank, with a probe for introducing gas into the space between the glass panes of the insulating glass pane blank and with a probe for extracting air or air-gas mixture from the interior of the insulating glass blank, a suction device being provided on one of the pressure plates, with which one of the glass sheets of the insulating glass blank is held at a distance from the spacer frame by being bent away from the spacer frame with elastic deformation in that the suction device is provided in the area of a lower corner of one of the plates of the press, and that the area of the press plate in which the suction device is provided is pivotally connected to the remaining part of the press plate.

Vorteilhafte Ausführungsformen der erfindungsgemäßen Vorrichtung sind Gegenstand der Unteransprüche 10 bis 13.Advantageous embodiments of the device according to the invention are the subject of subclaims 10 to 13.

Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung, in der auf die angeschlossene Zeichnung Bezug genommen wird. In den

  • Fig. 1 bis 3 sind drei Phasen beim Gastausch, bei dem Luft im Innenraum eines Isolierglasscheibenrohlings durch ein Gas ersetzt wird, gezeigt und
  • Fig. 4 zeigt schematisch eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens.
Further details and features of the invention will become apparent from the following description in which reference is made to the attached drawing. In the
  • 1 to 3 show three phases in gas exchange, in which air in the interior of an insulating glass blank is replaced by a gas, and
  • 4 schematically shows an apparatus for performing the method according to the invention.

Ein Scheibenpaket 1, das aus einer Zusammenbaustation kommt, wobei die Deckscheibe nur oben am Abstandhalterrahmen anlehnt und unten einen Abstand von diesem aufweist, wird in eine Presse gefördert. In der Presse (z.B. eine der aus der DE-PS 31 30 645 bekannten Bauart) wird das Scheibenpaket verpreßt und dabei die Deckscheibe in einer unteren Ecke 2 des Scheibenpaktes, vorzugsweise der vorderen, unteren Ecke im Abstand vom Abstandhalterrahmen gehalten und/oder vom Abstandhalterrahmen abgehoben bzw. zum Abstandhalterrahmen auf Abstand gehalten.A disk package 1, which comes from an assembly station, the cover disk only leaning against the spacer frame at the top and being at a distance from the bottom, is conveyed into a press. In the press (for example, one of the designs known from DE-PS 31 30 645), the disk package is pressed and the cover disk is held in a lower corner 2 of the disk package, preferably the front, lower corner, at a distance from the spacer frame and / or from the spacer frame lifted off or held at a distance from the spacer frame.

Durch den Spalt im Bereich der einen unteren Ecke 2, der also beim Verpressen des Isolierglasscheibenrohlinges offen bleibt, werden zwei an einem gewinkelten Träger 3 nahe beieinander montierte Sonden 4 und 5, über die der Gastausch erfolgt, in den Innenraum des Isolierglasscheibenrohlinges eingeführt. Dabei ist die das Sondergas (z.B. Argon) zuführende Sonde 4 horizontal ausgerichet und bläst den Gasstrom mit hoher Geschwindigkeit parallel zum unteren, horizontalen Schenkel des Abstandhalterrahmens in den Zwischenraum zwischen den Glasscheiben ein.Through the gap in the area of a lower corner 2, which thus remains open when pressing the insulating glass blank, two probes 4 and 5, which are mounted close together on an angled support 3 and via which the gas exchange takes place, are introduced into the interior of the insulating glass blank. The probe 4 supplying the special gas (e.g. argon) is aligned horizontally and blows the gas flow into the space between the glass panes at high speed parallel to the lower, horizontal leg of the spacer frame.

Die zweite, am gewinkelten Träger 3, der von außen an die Ecke 2 des Isolierglasscheibenrohlinges 1, gegebenenfalls unter Zwischenfügung einer Dichtung (elastischer Schaumstoff) angelegt wird, montierte Sonde 5 weist eine Mündung auf, die schräg nach oben gerichtet ist, und dient zum Absaugen von aus dem Innenraum des Isolierglasscheibenrohlinges verdrängter Luft bzw. Luft-Gas- Gemisch.The second, mounted on the angled support 3, which is placed from the outside on the corner 2 of the insulating glass blank 1, optionally with the interposition of a seal (elastic foam), has a mouth which is directed obliquely upwards and is used for suction of air or air-gas mixture displaced from the interior of the insulating glass blank.

Der Gastausch wird so durchgeführt, daß im Innenraum des Isolierglasscheibenrohlinges stets ein wenigstens kleiner Überdruck herrscht, so daß kontinuierlich Gas getauscht werden kann und allenfalls überschüssige Luft bzw. Gas-Luft-Gemisch aus dem Innenraum verdrängt wird, was nicht stört, da das Füllgas, insbesondere wenn es sich um Argon handelt, nicht teuer ist.The gas exchange is carried out in such a way that there is always at least a slight excess pressure in the interior of the insulating glass blank, so that gas can be exchanged continuously and any excess air or gas-air mixture is displaced from the interior, which is not a problem since the filling gas, especially if it is argon, is not expensive.

Durch das Einblasen von Füllgas mit hoher Geschwindigkeit parallel zum unteren horizontalen Schenkel des Abstandhalterrahmens folgt der Gasstrom den Innenumfang des Abstandhalterrahmens und verdichtet sich zur Mitte hin, so daß nach und nach Luft in einem zunehmend kleiner werdenden Bereich verdichtet und aus dem Innenraum des Isolierglasscheibenrohlinges verdrängt wird, wie dies in den Fig. 1 bis 3 durch die "Front" 6 zwischen dem Füllgas und der Luft angedeutet ist.By blowing in filling gas at high speed parallel to the lower horizontal leg of the spacer frame, the gas flow follows the inner circumference of the spacer frame and compresses towards the center, so that air is gradually compressed in an increasingly smaller area and displaced from the interior of the insulating glass blank , as indicated in FIGS. 1 to 3 by the "front" 6 between the filling gas and the air.

Die Steuerung des Gasfüllens erfolgt entweder durch Messen des Restsauerstoffgehaltes im aus dem Innenraum des Isolierglasscheibenrohlinges abgezogenen Gas-Luft-Gemisch, durch Bestimmung der Zusammensetzung des Luft-Gas-Gemisches im Innenraum des Isolierglasscheibenrohlinges und/oder durch Ermittlen (Berechnen) des Volumens des Scheibeninnenraums und Zuführen einer entsprechend dosierten Gasmenge, wobei ein gewisser Verlust wegen des herrschenden Überdrucks dadurch berücksichtigt wird, daß die berechnete Volumensmenge um einen z.B. empirisch festgelegten Bruchteil vergrößert wird.The gas filling is controlled either by measuring the residual oxygen content in the gas-air mixture drawn from the interior of the insulating glass pane blank, by determining the composition of the air-gas mixture in the interior of the insulating glass pane blank and / or by determining (calculating) the volume of the pane interior and Supply of a correspondingly metered amount of gas, a certain loss due to the prevailing excess pressure being taken into account by the fact that the calculated volume amount by an example empirically determined fraction is increased.

Vorteile des erfindungsgemäßen Verfahrens bestehen darin, daß kontinuierlich gearbeitet werden kann und nicht ständig zwischen Einblasen und Absaugen gewechselt werden muß. Auch entfallen bei der erfindungsgemäßen Arbeitsweise das Bohren und nachträgliche Verschließen von Öffnungen im Abstandhalterrahmen, durch welche die Sonden einzuführen sind. Ein weiterer Vorteil besteht darin, daß die Vermischung zwischen zugeführtem Gas und Luft im Innenraum des Isolierglasscheibenrohlinges in Grenzen gehalten wird, da eine derartige Vermischung nur in beschränktem Ausmaß eintritt.Advantages of the method according to the invention are that it is possible to work continuously and does not have to be constantly switched between blowing and suctioning. In addition, the drilling and subsequent closing of openings in the spacer frame through which the probes are to be inserted are dispensed with in the working method according to the invention. Another advantage is that the mixing between the supplied gas and air in the interior of the insulating glass blank is kept within limits, since such mixing only occurs to a limited extent.

Eine in Fig. 4 schematisch angedeutete Presse besitzt zwei Preßplatten 10 und 11, die relativ zueinander beweglich sind, wie dies für Pressen zum Verpressen von Isolierglasrohlingen an sich bekannt ist. Die Konstruktion der Presse mit den Platten 10 und 11 und der Antrieb zum Verstellen der beweglichen Preßplatte, z.B. der Platte 11, kann eine Konstruktion besitzen wie sie an sich bekannt ist. Beispiele für im vorliegenden Zusammenhang verwendbare bekannte Preßvorrichtungen sind in der AT-PS 385 499 oder in der am 15. Juni 1990 bekanntgemachten österr. Patentanmeldung A 2956/87 beschrieben. Wie aus Fig. 4 ersichtlich, ist nur ein unterer Eckbereich 12 der Preßplatte 11 gegenüber der Preßplatte 11 verschwenkbar und mit dieser über Scharniere 13 und 14 verbunden. Zum Verschwenken des Eckbereiches 12 der Preßplatte 11 ist ein Druckmittelzylinder 15 vorgesehen, der einerseits bei 16 mit der Preßplatte 11 und anderseits über einen von dem Eckbereich 12 abstehenden Ansatz 17 mit diesem verbunden ist. Durch Betätigen des Druckmittelzylinders 15 kann der Eckbereich 12 in Richtung des Doppelpfeiles 18 (Fig. 4) hin und her verschwenkt werden.A press schematically indicated in FIG. 4 has two press plates 10 and 11 which are movable relative to one another, as is known per se for presses for pressing insulating glass blanks. The construction of the press with the plates 10 and 11 and the drive for moving the movable press plate, e.g. the plate 11 can have a construction as is known per se. Examples of known pressing devices which can be used in the present context are described in AT-PS 385 499 or in Austrian patent application A 2956/87, which was published on June 15, 1990. As can be seen from FIG. 4, only a lower corner region 12 of the press plate 11 can be pivoted with respect to the press plate 11 and is connected to it via hinges 13 and 14. For pivoting the corner area 12 of the press plate 11, a pressure medium cylinder 15 is provided, which is connected on the one hand at 16 to the press plate 11 and on the other hand via an extension 17 projecting from the corner area 12. By actuating the pressure medium cylinder 15, the corner region 12 can be pivoted back and forth in the direction of the double arrow 18 (FIG. 4).

Wie aus Fig. 4 ersichtlich, sind im Eckbereich 12 der Preßplatte 11 im gezeigten Ausführungsbeispiel zwei Saugköpfe 19 und 20 vorgesehen, die über Leitungen 21, 22 mit Unterdruck beaufschlagt werden können. Die Saugköpfe 19 und 20 legen sich an die eine Glasscheibe des Isolierglasscheibenrohlinges 1 an, so daß in dessen Ecke 2 durch Betätigen des Druckmittelzylinders 15 und Verschwenken des Eckbereiches 12 der Preßplatte 11 die eine Glasscheibe vom zwischen den beiden Glasscheiben des Isolierglasscheibenrohlinges 1 befindlichen Abstandhalterrahmen abgehoben wird.As can be seen from FIG. 4, two suction heads 19 and 20 are provided in the corner region 12 of the pressure plate 11 in the exemplary embodiment shown, and can be subjected to negative pressure via lines 21, 22. The suction heads 19 and 20 lie against the one glass pane of the insulating glass blank 1 so that in its corner 2 the one glass pane is lifted from the spacer frame located between the two glass panes of the insulating glass blank 1 by actuating the pressure medium cylinder 15 and pivoting the corner region 12 of the press plate 11 .

Sobald dies geschehen ist, wird in die so gebildete Öffnung die Sonde 4 und die Sonde 5 eingeführt, wobei sich der winkelförmige Träger 3 an den Isolierglasscheibenrohling 1 im Bereich der Ecke 1' desselben, wie oben erwähnt, an den Außenumfang des Isolierglasscheibenrohlinges 1 anlegt. Sobald der Gasaustausch wie weiter oben beschrieben erfolgt ist, wird der Träger 3 mit den Sonden 4 und 5 wieder entfernt, wozu eine nicht näher gezeigte Betätigungsvorrichtung für die Halterung 3 vorgesehen ist, und der Druckmittelzylinder 15 so betätigt, daß der Eckbereich 12 der Platte 11 wieder zurückschwenkt und so der Isolierglasscheibenrohling auch im Bereich der zunächst noch offenen Ecke 2 verpreßt.As soon as this has been done, the probe 4 and the probe 5 are inserted into the opening formed in this way, the angular support 3 resting against the insulating glass blank 1 in the region of the corner 1 'thereof, as mentioned above, on the outer circumference of the insulating glass blank 1. As soon as the gas exchange has taken place as described above, the carrier 3 with the probes 4 and 5 is removed again, for which purpose an actuating device (not shown in detail) for the holder 3 is provided, and the pressure medium cylinder 15 is actuated so that the corner region 12 of the plate 11 swings back again and thus the insulating glass blank is pressed in the area of the initially still open corner 2.

Nachdem der Preßvorgang und der Gasaustausch so beendet ist, wird die Presse geöffnet, indem die Preßplatte 11 von der Preßplatte 10 wegbewegt wird und der so mit Gas, beispielsweise Argon, gefüllte Isolierglasscheibenrohling 1 aus der Presse gefördert und beispielsweise einer Versiegelungsstation zugeführt.After the pressing process and the gas exchange has ended, the press is opened by moving the pressing plate 11 away from the pressing plate 10 and conveying the insulating glass blank 1 filled with gas, for example argon, from the press and, for example, to a sealing station.

Claims (13)

1. Method for filling the internal space of clots for insulating glass panels (1) comprising at least two glass panes with a spacer frame disposed therebetween, with a gas other than air, especially with argon, a slot-shaped opening being formed for the introduction of gas and the extraction of air or air/gas mixture, one of the glass panes of the clot for insulating glass panels (1) being bent resiliently and held apart from the spacer frame when the clot for insulating glass panels (1), after assembly of the bundle of panes in a press, are pressed in a press between press plates (10, 11) in a substantially vertical upright configuration, gas being blown through the slot-shaped opening thus formed into the internal space of the clot for insulating glass panels(1 and air or air/gas mixture being extracted from the internal space of the clot for insulating glass panels (1), characterised in that one of the glass panes of the clot for insulating glass panels (1) is held away from the spacer frame in the region of only one lower corner of the clot, whereas the remaining portion of this glass pane is held in contact against the spacer frame by the press plates (10, 11), in that gas is blown by means of a probe (4) into the internal space of the clot for insulating glass panels (1) with a direction of flow substantially parallel to the lower horizontal leg of the spacer frame, and in that air or air/gas mixture is extracted by means of a probe (5) through an area of the slot-shaped opening from the internal space of the clot for insulating glass panels (1) which lies above the region of the slot-shaped opening through which gas is blown into the internal space of the clot for insulating glass panels (1).
2. Method according to claim 1, characterised in that, in order to introduce gas into the internal space of the clot for insulating glass panel (1) , a probe (4) is used which is oriented substantially parallel to the lower horizontal leg of the spacer frame.
3. Method according to claim 1 or 2, characterised in that air or air/gas mixture is extracted from the internal space of the clot for insulating glass panel (1) to such an extent that, during the gas exchange in the internal space of the clot for insulating glass panel (1), a pressure obtains which is higher than the ambient pressure.
4. Method according to one of claims 1 to 3, characterised in that the clot for insulating glass panel (1) is pressed in the area of its corner which was previously held open, after gas exchange has been completed.
5. Method according to one of claims 1 to 4, characterised in that, in order to extract air or air/gas mixture, a probe (5) is used, which is disposed above the probe (4) for introducing air or air/gas mixture, and which has a mouth, oriented obliquely upwards and pointing away from the probe (4) for introducing gas or air/gas mixture, and serving to extract air or air/gas mixture from the internal space of the clot for insulating glass panel (1).
6. Method according to one of claims 1 to 5, characterised in that both probes (4, 5) are simultaneously brought into connection with the internal space of the clot for insulating glass panel (1).
7. Method according to one of claims 1 to 6, characterised in that the gas exchange is continued until the proportion of air in the air/gas mixture falls below a predetermined value.
8. Method according to one of claims 1 to 7, characterised in that the volume of the internal space of the clot for insulating glass panel (1) is calculated, and an amount of gas is introduced into the internal space of the clot for insulating glass panel (1) which corresponds to the calculated volume, increased by a predetermined fraction of this volume.
9. Device for carrying out the method according to one of claims 1 to 8, with two press plates (10, 11), which can be brought together in order to compress the substantially vertically upright clot for insulated glass panels (1), with a probe (4) for introducing gas into the space between the glass panels of the clot for insulating glass panel (1), and with a probe (5) for extracting air from the internal space of the clot for insulating glass panel (1), a suction device (19, 20) being provided on one of the press plates (10, 11), by means of which one of the glass panes of the clot for insulating glass panel is held at a distance from the spacer frame, being bent away resiliently from the spacer frame, characterised in that the suction device (19, 20) is provided in the region of a lower corner (2) of one of the plates (10, 11) of the press, and in that the region (12) of the press plate (11) in which the suction device (19, 20) is provided is pivotally connected to the remaining portion of the press plate (11).
10. Device according to claim 9, characterised in that the corner region (12) of the press plate (11) which is pivotal with respect to the same is connected to the press plate (11) by a hinge-like connection (13, 14).
11. Device according to claim 9 or 10, characterised in that a hydraulic cylinder (15) is provided, which engages at one end on the press plate (11) and at the other end on an extension (17) projecting from the pivotal corner region (12) of the press plate (11), in order to pivot the corner region (12) of the press plate (11 ).
12. Device according to one of claims 9 to 11, one press plate (11) of the press plates (10, 11) being movable relative to the other press plate (10), characterised in that the corner region carrying the suction device (19, 20) is pivotably disposed on the movable press plate (11).
13. Device according to one of claims 9 to 12, characterised in that both probes (4, 5) are attached to a common angled support (3), and in that the probes (4, 5) may be applied against the corner region (2) of the clot for insulating glass panel (1) by means of moving the support (3), in that the probe (4) for introducing gas into the internal space of the clot for insulating glass panel (1) is oriented parallel to the lower horizontal edge of the clot for insulating glass panel (1) , and in that the probe (5) for extracting air or air/gas mixture from the internal space of the clot for insulating glass panel (1) has a mouth which is oriented obliquely upwards.
EP90890281A 1990-02-28 1990-10-15 Method for filling the inner space of insulating glass clots with gas Expired - Lifetime EP0444391B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT473/90 1990-02-28
AT0047390A AT408982B (en) 1990-02-28 1990-02-28 METHOD FOR FILLING THE INTERIOR OF INSULATING GLASS PANELS WITH GAS
AT47390 1990-02-28

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EP0444391A2 EP0444391A2 (en) 1991-09-04
EP0444391A3 EP0444391A3 (en) 1992-04-08
EP0444391B1 true EP0444391B1 (en) 1994-09-21
EP0444391B2 EP0444391B2 (en) 2000-12-27

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AT (2) AT408982B (en)
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AT393830B (en) * 1988-01-11 1991-12-27 Lisec Peter DEVICE FOR FILLING INSULATING GLASS WITH SPECIAL GAS
DE3914706A1 (en) * 1988-05-04 1989-12-14 Lenhardt Maschinenbau Process and apparatus for assembling insulating glass panes which are filled with a gas other than air
EP0406325B2 (en) * 1988-05-04 1997-07-16 Lenhardt Maschinenbau GmbH Process and device for filling insulating glass panes with a heavy gas

Also Published As

Publication number Publication date
EP0444391A3 (en) 1992-04-08
ES2062498T5 (en) 2001-03-16
ES2062498T3 (en) 1994-12-16
DE9014304U1 (en) 1991-01-31
EP0444391B2 (en) 2000-12-27
ATE112010T1 (en) 1994-10-15
EP0444391A2 (en) 1991-09-04
US5110337A (en) 1992-05-05
AT408982B (en) 2002-04-25
ATA47390A (en) 1992-01-15
DE59007269D1 (en) 1994-10-27

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