EP0763645A1 - Assembly method for insulating glazing with a thermoplastic spacer and containing a lattice work, end joining pieces used therefor and corresponding insulating glazing - Google Patents

Abstract

Between the two individual glass panes (1) is a glazing bar frame whose bars are thinner than the distance between the panes. The panel has a non-rectangular outline, thus at least one bar (3) is cut inclined and an end piece (4) is fitted on the inclined end. At the top of this end piece two single armed levers or one double armed lever (17) is swivel mounted on a shaft (5). The swivel axis (15) runs at right angles to the panes. The bars are hollow so that the end pieces can be inserted into them.

Description

The invention is based on a method with the features specified in the preamble of claim 1.

From DE-U-94 15 335 it is known to assemble insulating glass panes with a frame-shaped, thermoplastic spacer between two individual glass sheets by extruding the spacer onto one of the two glass sheets along its edge and at a distance from its edge, joining the two glass sheets into one semi-finished insulating glass pane so that they are adhesively connected to each other by the spacer, and pressing the semi-finished insulating glass pane so that the glass sheets are at a predetermined distance from each other while compressing the spacer. The semi-finished insulating glass pane has an edge joint which is delimited by the outside of the spacer and by the two glass panels and which is subsequently filled with a pasty sealing compound , which is usually a plastic compound consisting of two components mixed together, which hardens and thus produces a firm bond between the glass sheets. Polysulfides (thiocols) are common as hardening sealing compounds, but also polyurethane. Butyl rubbers (polyisobutylenes) are common as a material for thermoplastic spacers.

Insulating glass panes are also known, in which a rung frame is inserted between the glass panels in order to achieve the impression of a rung window. In this case, the frame-shaped spacer is formed from metallic hollow profiles, which are coated on both sides with a thermoplastic adhesive and are thus glued to the two glass sheets of the insulating glass pane. In these insulating glass panes provided with a rung frame, the spacer and the rung frame form a unit: the prefabricated rung frame is mechanically connected to the prefabricated spacer frame, namely by driving screws or nails from the outside of the spacer frame into plastic end pieces, which are provided at the ends of the rungs of the rung frame. However, this measure leads to a reduction in the quality of the insulating glass panes because the desired double sealing of the pane interior is no longer provided at the perforated points of the spacer frame.

Insulating glass panes with a thermoplastic spacer and a rung frame are not yet known. It would also not be possible to manufacture such insulating glass panes in a manner corresponding to the manufacture of insulating glass panes with a metallic spacer frame and inserted rung frame, because a thermoplastic spacer frame cannot be economically prefabricated, connected to a prefabricated rung frame, handled without deformation and then self-adhesive on a glass sheet apply. Also the way to first extrude the thermoplastic spacer onto a glass sheet is a custom-made one Inserting the rung frame and connecting it to the spacer by driving in nails or screws fails because the freshly extruded, soft spacer has far too little mechanical stability and strength to bear such a measure. One could think of waiting a long time to give the spacer the opportunity to cool down to room temperature and solidify, but even then the mechanical strength and stability of the spacer would still be too low for such a measure, not to mention that the glass panels would have to be stored in a complex manner, with the result that economical production would be prevented. In addition, there would be the problem that thermoplastic spacers are compressed and widened when the insulating glass panes are pressed; if the rung frame is used, this would result in the latter being pressed into the spacer and the spacer becoming wavy.

The present invention has for its object to show a way how insulating glass panes with a frame-shaped, thermoplastic spacer and inserted rung frame can be produced economically without the spacer becoming wavy.

To achieve this object, the method specified in claim 1 is proposed, which leads to insulating glass panes with the features specified in claim 9. The subject of claim 25 is an end piece for rung frames in such insulating glass panes and claim 26 claims protection for an auxiliary device suitable for carrying out the invention for inserting a rung frame into an insulating glass pane. Advantageous developments of the invention are the subject of the dependent claims.

According to the rung frame is fixed separately from the frame-shaped thermoplastic spacer on the glass sheet. For this purpose, a rung frame is used, the rungs of which are thinner than the predetermined distance between the glass sheets of the insulating glass pane and end pieces which are either as thick as the specified distance or compressible and slightly thicker than the specified distance of the glass sheets; the length of the rungs including their end pieces is chosen to be somewhat smaller, preferably 1 to 2 mm smaller than the clear width measured along the rungs of the frame-shaped spacer extruded onto the glass sheet before it is compressed by pressing the semi-finished insulating glass pane; in addition, the end pieces of the rungs are designed to be adhesive on at least one of the sides facing the two glass panels. A rung frame prepared in this way is aligned with the spacer, which has been extruded onto the one glass sheet, and inserted into the space enclosed by the spacer and glued to the glass sheet in such a way that the end pieces do not touch the spacer. The second glass sheet is then placed on the spacer and the semifinished insulating glass pane thus formed is pressed in order to set the predetermined distance between the glass sheets. As a result of the compression of the spacer accompanying the pressing, the gaps which initially exist between the end pieces and the spacer are closed without the end pieces being pressed into the spacer to make the spacer wavy.

• Der Einbau des Sprossenrahmens läßt sich automatisieren, ohne die Taktzeit einer Isolierglasfertigungslinie zu verlängern.
• Der thermoplastische Abstandhalter wird durch den Einbau des Sprossenrahmens weder beschädigt noch nachteilig verformt; insbesondere findet kein Durchstoßen des Abstandhalters statt, welches die Gefahr von Undichtigkeiten erhöhen könnte.
• Durch die mechanische Entkopplung des Sprossenrahmens vom Abstandhalter können Wärmedehnungen und Druckschwankungen im Innenraum der Isolierglasscheibe sich weniger nachteilig auf den thermoplastischen Abstandhalter auswirken.
• Der Arbeitsaufwand für das Einsetzen und Fixieren des Sprossenrahmens ist wesentlich geringer als im Fall von Isolierglasscheiben mit herkömmlichem metallischem Abstandhalterrahmen; in einer Fertigungslinie kann auf diese Weise eine Arbeitskraft eingespart werden.

The invention has a number of advantages:

• The installation of the rung frame can be automated without extending the cycle time of an insulating glass production line.
• The thermoplastic spacer is neither damaged nor adversely deformed by the installation of the rung frame; in particular, there is no puncturing of the spacer, which could increase the risk of leaks.
• The mechanical decoupling of the rung frame from the spacer can cause thermal expansion and pressure fluctuations less adverse effects on the thermoplastic spacer in the interior of the insulating glass pane.
• The work involved in inserting and fixing the rung frame is considerably less than in the case of insulating glass panes with a conventional metallic spacer frame; In this way, a worker can be saved in a production line.

Hollow profiles are expediently used as rungs and preferably end pieces which are made of plastic by injection molding and have a shaft and a head which projects over the shaft. Such end pieces are inserted with the shaft into the hollow end of the rungs until they hit the head. If the heads have two parallel contact surfaces facing the two glass panels, the spacing of which corresponds to the predetermined spacing of the glass panels, then the head can be solid. When the semi-finished insulating glass pane is pressed, the contact surfaces of the heads lie against the glass sheets, are a means of fixing the predetermined distance between the glass sheets and at the same time center the rungs so that they are at a short distance from the two glass sheets and cannot rub against them.

End pieces which are compressible and have contact surfaces, the spacing of which is initially somewhat larger than the predetermined spacing of the glass panels, are less expensive and more suitable for fixing the rung frame. The advantage is that, despite dimensional deviations and inaccuracies in the way of working, the end pieces are securely glued to the glass sheets. The end pieces preferably have an oversize of 1 mm to 2 mm, so that they are compressed by 1 mm to 2 mm when the semi-finished insulating glass pane is pressed. In order to obtain the desired compressibility, the head of the end piece could be made from a soft plastic. Cheaper is to produce the end pieces uniformly from a harder, more dimensionally stable plastic, for example from a polyamide, and to achieve the desired compressibility by slitting the end pieces longitudinally, the slot starting from the head and extending into the shaft. The two parts of the head can then be brought closer to one another by elastic bending of the slotted shaft section.

In principle, it is sufficient to fix the end pieces in the insulating glass pane by gluing them to one of the two glass sheets. However, greater security can be achieved by gluing with both glass panels. For this purpose, the two contact surfaces of the head and the end pieces can be coated with a contact adhesive, which is initially covered by a protective film, which is only removed immediately before the rung frame is inserted into the spacer.

Basically you can use the rung frame by hand. However, an assembly aid makes it easier and more precise. It is sufficient to provide two guide elements on at least two edges of the glass sheet extending at right angles to one another. The rung frame can be placed on these guide elements and guided through the guide elements into the intended position on the glass panel. Insulating glass panes are usually assembled today as they pass through a production line, on which the glass sheets, standing on a horizontal conveyor and leaning against a supporting wall, are moved from workstation to workstation. In most workstations, the glass panels are usually guided, stopped and processed up to a predetermined position, for example secured by a stop. This predetermined position can be easily assigned to the two mutually perpendicular guide elements, one at the level of the horizontal conveyor and one perpendicular to it at the point defined by the stop. In this way, the position of the guide elements is independent of the glass sheet format and they only have to be pushed or swung in from an ineffective position into an effective position.

One way of designing the guide elements is to use contact strips which are arranged just above the thermoplastic spacer, in such a way that the contact surfaces of the contact strips are aligned slightly to the inside of the spacer in front of the tangential plane running perpendicular to the glass sheet. In this case, the rung frame can be placed on the two contact strips and guided to the glass panel in the alignment specified by the contact strips and glued to it.

The insertion of the rung frame is even easier if, instead of contact strips, thin baffles are used, which are arranged directly next to the inside of two sections of the spacer which extend at right angles to one another, so that the rung frame can be guided along the baffles up to the glass panel. Then the baffles are pulled back vertically from the glass sheet.

The vast majority of insulating glass panes have a rectangular outline. But there are also insulating glass panes, the outline of which is not rectangular but, for example, triangular, trapezoidal, semicircular or arched. Such insulating glass panes are also referred to as "model panes". If you want to install rung frames in model panes, the ends of the rungs must be adapted to the special course of the spacer. This also applies to the end pieces, which are to establish the at least optical connection between the rung frame and the spacer. One could try to do this by collecting end pieces with special shapes. In view of the unlimited variety of shapes of model panes, however, this would be an expensive undertaking. One could also think of making the end pieces for the model discs individually, but that too would be a complex procedure.

The solution that is proposed below is much cheaper.

According to claim 14, a rung frame is used in model panes, in which at least one rung is cut obliquely and an end piece is provided on the obliquely cut end of the rung, which head has a pivotable arm attached to the shaft, the pivot axis of which extends perpendicular to the glass panels . This makes it possible to adapt the lever to the spacer which does not run at right angles to the longitudinal direction of the rung in the region of the pivot angle provided, the inclined section at the end of the rung being able to be individually adapted to the course of the spacer. This solution is particularly suitable when the end of the rung meets the oblique or arcuate section of the spacer between two corners of the insulating glass pane. If the end of the rung is directed into a corner of the insulating glass pane or if it meets a more curved section of the spacer, then the solution specified in independent claim 15 is more suitable, which uses two single-armed levers instead of a two-armed lever on the end piece of the rung, which independently are pivotable from one another and can assume, for example, a gable roof-like position.

The compressibility of the end pieces required for fixing the rung frame by pressing the insulating glass pane can also be achieved as described above. It is preferred to produce the end pieces and the levers fastened therein uniformly from a dimensionally stable plastic, for example from a polyamide, and to achieve the desired compressibility by longitudinally slitting the end pieces, including the levers fastened to them, the slot starting from the head and extends into the shaft with which the end pieces are inserted into the preferably hollow rungs until they strike the back of the levers at the obliquely cut end of the rungs. This solution is not only technically simple, but also aesthetically demanding, because you can only see from the end piece the levers resting on the spacer, which can be thin and in the color of the spacer and ensure through a relatively large contact surface on the spacer that this exerts only a small pressure on the spacer. The actual fixation should, if possible, be done by gluing the end pieces to the two glass panels.

If you want to achieve the desired compressibility through a longitudinal slot of the end pieces extending from the head to the shaft, this can be achieved in that the levers are provided in pairs and are pivotably mounted on both sides of the slot. The lever arranged on one side of the slot can be pivotable independently of the lever located on the other side of the slot. However, the end piece is given greater stability and is easier to handle if the levers which form a pair and are located on both sides of the slot in the shaft are not completely separated from one another, but are connected to one another in a resilient or flexible manner, e.g. by one or more flexible or resilient brackets, preferably by film hinges, which bridge the slot and allow the two levers of the pair of levers to come closer. If the brackets or film hinges are arranged at the free ends of the levers, then these can strike against one another as a result of the pressing of the insulating glass pane, without the brackets connecting them being a hindrance. However, recesses could also be provided on the mutually facing sides of the levers, which receive and hide the brackets or film hinges when the insulating glass pane is pressed.

The front end of the shaft, to which the lever or levers are fastened, preferably has an end surface which runs obliquely to its longitudinal direction in order to be able to make the sheep completely disappear in the obliquely cut end of the rung. Such an end piece must be inserted into the rung in a selected orientation from two possible orientations. It is easier to handle and assemble the rung frame To provide the shaft with a beveled tip on both sides and to provide two swivel axes or a swivel axis in the center. In this case, the end piece can be inserted into the obliquely cut end of the rung in both possible orientations, since the levers can adapt to the course of the spacer in both pivoting directions.

The physically provided pivot axes preferably have stops facing the glass panels for the respective part of the lever. This has the advantage that the levers - as long as the slot in the end piece is not compressed - cannot move towards one another on the physically provided pivot axes because the stops prevent this.

Adjacent to their pivot axis, the levers preferably have a cutout in which the shaft dips when pivoting; this facilitates the formation of the tip of the shaft and its complete retractability in the rung.

Figur 1

zeigt die Anordnung einer Sprosse eines Sprossenrahmens relativ zum thermoplastischen Abstandhalter auf einer einzelnen Glastafel in einem Schnitt senkrecht zu dieser Glastafel,

Figur 2

zeigt in einer Darstellung wie in Figur 1 den Zustand nach dem Ansetzen der zweiten Glastafel der Isolierglasscheibe und nach deren Verpressen,

Figur 3

zeigt als Detail in einer Seitenansicht ein Endstück zum Einsetzen in die Sprossen des Sprossenrahmens,

Figur 4

zeigt schematisch die Anordnung von zwei Anlegeleisten relativ zu einer mit einem Abstandhalter belegten Glastafel als Montagehilfe für einen Sprossenrahmen,

Figur 5

zeigt schematisch die Anordnung eines Leitbleches senkrecht zu einer mit einem thermoplastischen Abstandhalter belegten Glastafel als Montagehilfe für einen Sprossenrahmen,

Figur 6

zeigt die Anordnung einer längs geschnittenen Sprosse eines Sprossenrahmens relativ zum thermoplastischen Abstandhalter auf einer einzelnen Glastafel in einer Draufsicht auf die Glastafel, mit einem gegenüber den Figuren 1 bis 3 abgewandelten Endstück

Figur 7

zeigt die Anordnung gemäß Figur 1 in einem Schnitt senkrecht zu dieser Glastafel und längs durch die Sprosse,

Figur 8

zeigt als Detail ein Mittelstück des im Sprossenendstück verwendeten Hebels mit einem Lager für eine Schwenkachse,

Figur 9

zeigt in einer Darstellung wie in Figur 7 den Zustand nach dem Ansetzen der zweiten Glastafel der Isolierglasscheibe und nach deren Verpressen,

Figur 10

zeigt das Sprossenendstück aus Figur 7 in der Draufsicht,

Figur 11

zeigt das Sprossenendstück nach dem Verpressen der Isolierglasscheibe (Figur 9) in der Draufsicht,

Figur 12

zeigt das Sprossenendstück aus den Figuren 6 bis 11 mit schräg abgeschnittener Sprosse in einer Modellscheibe,

Figur 13

zeigt in einer Darstellung entsprechend der Figur 6 ein drittes Ausführungsbeispiel einer Sprosse mit einem abgewandelten Sprossenendstück auf einer Glastafel,

Figur 14

zeigt die Anordnung aus Figur 13 in einem senkrecht zur Glastafel gelegten Längsschnitt durch die Sprosse,

Figur 15

zeigt als Detail die Ansicht der beiden inneren Enden der Hebel des Endstückes aus Figur 13 mit den Lagern für zwei Schwenkachsen,

Figur 16

zeigt die Draufsicht auf das Endstück aus Figur 13 in einer Darstellung entsprechend der Figur 10,

Figur 17

zeigt das Endstück aus Figur 13 in einer Darstellung entsprechend der Figur 11, und

Figur 18

zeigt das Endstück aus den Figuren 13 bis 17 in einer spitz zulaufend abgeschnittenen Sprosse, welche gegen eine Ecke einer Isolierglasscheibe gerichtet ist.

Embodiments of the invention are illustrated in the accompanying drawings and are described below. The same or corresponding parts are designated in the two exemplary embodiments with the same reference numerals.

Figure 1

shows the arrangement of a rung of a rung frame relative to the thermoplastic spacer on a single glass sheet in a section perpendicular to this glass sheet,

Figure 2

FIG. 1 shows the state after the second glass sheet of the insulating glass pane has been attached and after it has been pressed,

Figure 3

shows as a detail in a side view an end piece for insertion into the rungs of the rung frame,

Figure 4

schematically shows the arrangement of two contact strips relative to a glass panel covered with a spacer as an assembly aid for a rung frame,

Figure 5

shows schematically the arrangement of a guide plate perpendicular to a glass sheet covered with a thermoplastic spacer as an assembly aid for a rung frame,

Figure 6

shows the arrangement of a longitudinally cut rung of a rung frame relative to the thermoplastic spacer on a single glass sheet in a plan view of the glass sheet, with a modified end piece compared to Figures 1 to 3

Figure 7

shows the arrangement of Figure 1 in a section perpendicular to this glass sheet and longitudinally through the rung,

Figure 8

shows as a detail a center piece of the lever used in the rung end piece with a bearing for a pivot axis,

Figure 9

FIG. 7 shows the state after the second glass sheet of the insulating glass pane has been attached and after it has been pressed,

Figure 10

shows the rung end piece from Figure 7 in plan view,

Figure 11

shows the rung end piece after pressing the insulating glass pane (Figure 9) in plan view,

Figure 12

6 shows the rung end piece from FIGS. 6 to 11 with an obliquely cut rung in a model pane,

Figure 13

6 shows a representation according to FIG. 6 of a third exemplary embodiment of a rung with a modified rung end piece on a glass sheet,

Figure 14

13 shows the arrangement from FIG. 13 in a longitudinal section through the rung perpendicular to the glass sheet,

Figure 15

shows as a detail the view of the two inner ends of the lever of the end piece from Figure 13 with the bearings for two pivot axes,

Figure 16

13 shows a top view of the end piece from FIG. 13 in a representation corresponding to FIG. 10,

Figure 17

shows the end piece of Figure 13 in a representation corresponding to Figure 11, and

Figure 18

shows the end piece from Figures 13 to 17 in a tapered rung, which is directed against a corner of an insulating glass pane.

In the various drawings, identical or corresponding parts are identified by the same reference numbers.

Figure 1 shows a glass sheet 1, which is covered all around with a thermoplastic spacer 2, which was extruded in situ. A single rung 3 of a rung frame is shown in longitudinal section. The rung 3 is a hollow profile rod, in which an end piece 4 made of plastic by injection molding is inserted and anchored in a force-locking manner. The end piece is shown as a single part in Figure 3; it has a shaft 5, the front section of which has barbs 6 which project over the smooth outer side 7 of the rear section of the shaft and serve to fix the end piece in the rung 3. Furthermore, the end piece has a head 8 and, starting from the head, is provided with a longitudinal slot 9 which extends into the section of the shaft provided with barbs 6. The slot 9 divides the head into two halves, which each protrude beyond the outside 7 of the shaft and in have contact surfaces 10 facing in opposite directions and coated with a contact adhesive.

This end piece 4 is inserted into the rung 3 until the head 8 strikes at the end of the rung. The rung frame provided with the end pieces 4 is placed on the glass sheet 1 and fixed to the glass sheet 1 with the adhesive surface 10 such that a gap 11 still remains between the head 8 and the inside of the spacer 2 - see FIG. 1.

After the rung frame has been fixed to the glass sheet 1, a second glass sheet 12 is placed on the spacer 2, as a result of which a temporary bond is formed between the glass sheets 1 and 12, since the spacer 2 is sticky. The semi-finished insulating glass pane is then pressed in order to set the predetermined distance between the glass panels 1 and 12 and to make the adhesive connection between the spacer 2 and the glass panels 1 and 12 watertight. The spacer 2 is compressed by the pressing; the loss in height is compensated for by an increase in thickness, and thereby the gap 11 is closed. By pressing, the head 8 of the end piece 4 is pressed together by narrowing the slot 9, whereby a secure adhesive connection between the two contact surfaces 10 and the glass panels 1 and 12 is effected and the rungs 3 are centered between the glass panels 1 and 12, so that they are approximately the same distance from them - see Figure 2.

FIG. 4 shows a horizontal line of rollers 13 on which a glass sheet 1 stands and is leaned against a supporting wall which coincides with the plane of the drawing. The rollers 13 are driven and have moved the glass sheet 1 in the direction of the arrow 14 into a predetermined position marked by a stop 15 which can be moved back and forth. This predetermined position is associated with two contact strips 16 and 17 with contact surfaces 16a and 17a arranged displaceably thereon; the movability is used for Adaptation to the position of the rungs3. The contact strips 16 and 17 are attached to a frame, not shown, on which the driven rollers 13 are also attached. One of the contact strips 16 runs horizontally approximately at the level of the roller row 13. The other contact strip 17 runs vertically above the stop 15. The arrangement is such that the contact surface 17a facing the direction of travel 14 and the contact surface 16a pointing upward are approximately flush with the tangential planes run, which extend perpendicular to the glass sheet 1 and touch the inner sides 2a of the spacer 2; Strictly speaking, the contact surfaces 16a and 17a are located slightly, in the order of 1 mm, in front of the tangential surfaces, ie they are shifted into the area enclosed by the spacer frame 2, so that a rung frame 18, which with the end pieces 4 of its rungs 3 contacts the contact surfaces 16a and 17a is applied and in the alignment of these contact surfaces 16a and 17a is guided against the glass sheet 1, does not touch the spacer 2 at any point.

The shifting of the contact strips 16 and 17 between their effective position shown in FIG. 4 and an ineffective position can be done simply by pivoting about their longitudinal axis or an axis parallel thereto, as indicated schematically in FIG.

FIG. 5 shows guide elements modified compared to FIG. 4 as aids for aligning and inserting a rung frame, in contrast to FIG. 4 shown in a horizontal partial section through the arrangement. In this example too, a glass sheet 1 stands on a horizontal line of driven rollers 13 and is leaned against a support wall 20, at the end of which there is a retractable stop 15, against which the glass sheet 1 is conveyed in the direction of arrow 14. The guide elements 21 are arranged like the contact strips 16 and 17 in FIG. 4. They each consist of a strip 22 which is parallel to the support wall 20 and can be moved back and forth perpendicularly to the glass panel 1 and which is additionally by one to the support wall 20 parallel axis 23 is pivotable. Baffles 25 are attached to the strips 22 by means of clamping screws 24, which, in their effective position - see FIG. 5 - engage in the space enclosed by the spacer 2, lie closely in front of the inside of the spacer 2 and extend approximately to the surface of the glass sheet 1. The arrangement is selected so that a rung frame with its end pieces 4 attached to the guide plates 25 is automatically guided along the guide plates 25 into its predetermined position on the glass sheet 1. As soon as the rung frame with its end pieces 4 adheres to the glass sheet 1, the guide plates 25 can be pulled away from the glass sheet 1 together with the strips 22 perpendicular to the glass sheet 1 and then moved into their ineffective position by pivoting about the axis 23 (this pivoting is expedient, but not mandatory). After pulling back the stop 15, the glass sheet 1 can be transferred in the direction of arrow 14 to a subsequent assembly and pressing station, in which the second glass sheet 12 is attached and the semi-finished insulating glass pane is pressed. The result is a semi-finished insulating glass pane, as shown in Figure 2; it has an edge joint 26 delimited by the glass panels 1 and 12 and by the outside of the spacer 2, which is then filled with a hardening sealing compound, as a result of which the firm bond between the two glass panels 1 and 12 is completed.

Figures 6, 7 and 9 show a glass sheet 1, which is covered all around with a thermoplastic spacer 2, which was extruded in situ. A single rung 3 of a rung frame is shown in longitudinal section. The rung 3 is a hollow profile rod, in which an end piece 4 made of plastic by injection molding is inserted and anchored in a force-locking manner. For this purpose, the end piece has a shaft 5, from which two brackets 6 protrude, which extend parallel to the glass sheet 1 and have an oversize in relation to the clear width of the rung 3, so that the shaft 5 only with elastic deformation of the bracket 6 in the Rung 3 can be pushed. The outward end 8 of the shaft is tapered and for this purpose delimited by two inclined surfaces 113 and 114, which in the example shown enclose an angle of 90 °. Starting from the tip 8, the shaft is provided with a slot 9, which extends parallel to the glass sheet 1 and divides the shaft 5 into two halves over part of its length. Exactly at the tip of the shaft there are two pins 115 and 116 which extend perpendicular to the glass sheet 1, stand on the outside of the two halves of the shaft and protrude over the rung 3 on both sides (see FIG. 7), so that the rung Distance from the glass panels 1, 12.

As the head of the end piece 4, a straight, two-armed lever 117 is provided, which has a central recess 118 which is delimited by two surfaces 119 and 120 parallel to the glass sheet 1 and by two inclined surfaces 121 and 122 running perpendicular thereto, which have the same angle between them enclose like the inclined surfaces 113 and 114. Adjacent to the surfaces 118 and 119 are in the lever 117 two mutually aligned, open to the outside and open to the surfaces 119 and 120, undercut recesses 128 and 129 into which the pins 115 and 116 are engaged. In this way, the lever 117 is pivotable about the pins 115 and 116. The swivel range is 90 °; in the end positions either the inclined surface 121 or the inclined surface 122 bears against the shaft 5 (see FIG. 12).

To assemble the rung frame, the shaft 5, on the pins 115 and 116 of which the lever 117 is snapped, is pushed into the end of the rung 3 until both arms of the lever 117 strike the end of the rung 3 (FIG. 6). Beyond this stop, the shaft 5 cannot be pushed into the rung 3 because the recesses 121 and 122, which are open to the outside and in which the pins 115 and 116 lie, prevent it.

FIG. 6 shows that end pieces 4 according to the invention can also be used in rectangular insulating glass panes in which the rungs 3 run at right angles to spacer 2. In addition, the end pieces can also be used in model panes in which the rungs 3 run at an angle different from 90 ° to the spacer 2 (FIG. 12). For this purpose, the rungs are cut at an appropriate angle. If the end piece 4 according to the invention is pushed into such an obliquely cut rung 3 as far as it will go, then in this case the lever 117 will automatically engage both arms on the end of the rung 3 and then have the desired orientation parallel to the spacer 2. Due to the way the lever is mounted, the end piece cannot be pushed into the rung 3 beyond the stop in this case either.

With a swivel range of 90 ° you will get by in the vast majority of forms of model windows. However, it is entirely possible, by increasing the angle between the inclined surfaces 121 and 122 and correspondingly reducing the angle between the inclined surfaces 113 and 114, to increase the swivel range, if desired.

In order to be able to fix the rung frame provided with end pieces 4 on the glass sheet 1, the flanks 10 of the lever facing the glass sheets 1 and 12 are expediently designed to be adhesive, for example coated with a contact adhesive. The rung frame provided with the end pieces is placed on the glass sheet 1 and fixed with the adhesive flank 10 on the glass sheet 1 in such a way that a gap 11 remains between the lever 117 and the inside of the spacer 2, see FIG. 7. After fixing the Rung frame on the glass sheet 1, a second glass sheet 12 is placed on the spacer 2, whereby a preliminary bond between the glass sheets 1 and 12 is formed because the spacer 2 is sticky. The semi-finished insulating glass pane is then pressed in order to set the predetermined distance between the glass sheets 1 and 12 and to make the adhesive connection between the spacer 2 and the glass sheets 1 and 12 water vapor-tight. The spacer is compressed by the pressing; the loss in height is compensated by a Thickness increases, and thereby the gap 11 is closed. The pressing simultaneously compresses the lever 117, simultaneously narrowing the gap 123 between the two halves of the lever and deforming the two film hinges 124 and 125, by means of which the two halves of the lever 117 are connected to one another. Characterized in that the pins 115 and 116 are inserted into recesses, which are closed to the outer sides, the two halves of the shaft 5 are pressed together by narrowing the slot 9 by compressing the lever 117. This elastic deformation of the shaft 5 has a greater restoring force than the deformation of the film hinges 124 and 125 and ensures that the two adhesive flanks 10 of the lever 117 adhere sufficiently firmly to the two glass panels 1 and 12, so that the rung frame already because the gluing with the glass panels 1 and 12 in the finished insulating glass pane does not slip.

The state of the end piece 4 before the insulating glass pane is pressed is shown in FIG. 10. The state after the insulating glass pane has been pressed is shown in FIG. 11, which shows that the gap 123 between the two parts of the lever 117 and the slot 9 in the shaft 5 are closed. In this way, the width of the lever 117 after being compressed determines the air gap between the glass sheets 1 and 12 and the extent to which the spacer 2 can be compressed. But it is also possible to dimension the slot 9 and the gap 123 so that they are not completely closed by pressing the insulating glass; In this case, the desired air gap between the glass panels 1 and 12 must be ensured by presetting on the insulating glass press.

The rung end piece shown in FIGS. 13 to 18 differs from the rung end piece shown in FIGS. 1 to 7 in that the shaft 5 carries, at its tip 8, two single-arm levers 126 and 127 instead of a two-arm lever, which around parallel pins 115a, 115b, 116a, 116b are pivotable. In order to be able to accommodate these four pins at the tip 8 of the shaft, the inclined surfaces 113 and 114 are shortened and the tip 8 is thereby made blunt than in the example according to FIG. 6.

This rung end piece according to FIGS. 13 to 18 is particularly suitable for rungs which are directed against arc-shaped spacers 2, even for rungs which are directed into a corner of the insulating glass pane, as shown in FIG. 18. In this case, the end of the rung can be cut off at a double angle to form a tip in accordance with the course of the spacer 2. The shaft 5 is pushed into the rung 3 until the levers 126 and 127 strike the end of the rung and thereby take the desired angle with respect to one another. This exemplary embodiment can also be used in rectangular insulating glass panes, in which the rung extends at right angles to the spacer, since the levers 126 and 127 can also assume an extended position. Beyond the stop, the shaft 5 cannot be pushed into the rung 3 in these examples either, because the levers strike on three sides of the rung end and the recesses 121 for the pins 115a, 115b, 116a and 116b are oriented in the same way as in FIG second embodiment.

Claims (28)

Method for assembling insulating glass panes with a frame-shaped, thermoplastic spacer (2) between each two individual glass sheets (1, 12) of the insulating glass pane
Extruding the spacer (2) onto one of the two glass sheets (1) along its edge and at a distance from its edge,
Joining the two glass sheets (1, 12) into a semi-finished insulating glass pane so that they are adhesively connected to one another by the spacer (2),
Pressing the semi-finished insulating glass pane so that the glass sheets (1, 12) take up a predetermined distance from one another while simultaneously compressing the spacer (2), and if necessary
Filling a sealing compound into the edge joint (26), which is delimited to the outside by the glass panels (1, 12) and the spacer (2),
characterized in that, after the spacer (2) has been extruded, a prefabricated rung frame (18) is introduced into the area enclosed by the spacer (2),
the rungs (3) of the rung frame (18) being thinner than the predetermined distance and having end pieces (4) which are either as thick as the predetermined distance or are compressible and somewhat thicker than the predetermined distance,
the length of the rungs (3) including their end pieces (4) is somewhat smaller than the clear width of the frame-shaped spacer (2) measured along the rungs (3)
and the end pieces (4) are designed to be adhesive on at least one of the sides facing the glass panels (1, 12),
and that the rung frame (18) is arranged and glued to the one glass sheet (1) so that it does not touch the spacer (2), the distance between the end pieces (4) and the spacer (2) being so dimensioned and on the Cross-sectional dimensions of the spacer (2) is coordinated so that the gaps (11) initially existing between the end pieces (4) and the spacer (2) are closed by pressing the semi-finished insulating glass pane. Method according to claim 1, characterized in that the length of the rungs (3) including their end pieces (4) is chosen to be 1 mm to 2 mm shorter than the clear width of the frame-shaped spacer (2) measured along the rungs (3). Method according to claim 1 or 2, characterized by the use of compressible end pieces (4) which project in the direction of the two glass panels (1, 12) on both sides above the top of the rungs (3). Method according to claim 3, characterized by the use of compressible end pieces (4) which are compressed by 1 mm to 2 mm when the semi-finished insulating glass pane is pressed. Method according to one of the preceding claims, characterized by the use of hollow rungs (3) and end pieces (4) which have a shank (5) and a head (8) projecting over the shank and one extending from the head (8) and have slot (9) extending into the shaft (5), the end pieces (4) with the shaft (5) being inserted into the hollow ends of the rungs (3) until the head (8) touches them attacks. Method according to one of the preceding claims, characterized by the use of guide elements (16, 17, 25) on at least two edges of the glass sheet (1) which extend at right angles to one another, with the aid of which the rung frame (18) is brought into the intended position on the glass sheet (1) to bring. Method according to claim 6, characterized by the use of baffles (25) which are arranged directly next to the inside (2a) of two sections of the spacer (2) which extend at right angles to one another and after the rung frame (18) has been glued to the one glass sheet ( 1) be removed vertically from this. Method according to Claim 6, characterized by the use of contact strips (16, 17) which can be moved from an inactive position into an effective position, in particular about an axis parallel to the adjacent edge of the glass sheet (1) and can be pivoted into an effective position, in which a contact surface (16a, 17a) parallel to the adjacent edge of the glass sheet (1) perpendicular to the glass sheet (1) at a short distance above the spacer (2) and at a short distance from the glass sheet (1) determined by the inside of the immediately adjacent section 1) is perpendicular to the tangential plane (2a), ie within the area enclosed by the inner tangential surface of the spacer (2). Insulating glass pane with a frame-shaped, thermoplastic spacer (2) between each two individual glass sheets (1, 12) of the insulating glass pane, characterized by a rung frame (18) arranged between the glass sheets (1, 12), the rungs (3) of which are thinner than the predetermined distance of the two glass sheets (1, 12) in the insulating glass pane and end pieces (4) which are either as thick as the predetermined distance or compressible and in a de-energized state a little thicker than the specified distance,
the length of the rungs (3) including their end pieces (4) corresponds to the clear width of the frame-shaped, thermoplastic spacer measured along the rungs (3) and the end pieces (4) are not attached to the spacer (2), but apart from an assembly-related contact are glued to at least one of the glass panels (1, 12). Insulating glass pane according to claim 9, characterized in that the end pieces (4) are glued to both glass sheets (1, 12). Insulating glass pane according to claim 9 or 10, characterized in that the end pieces (4) are compressible and project in the direction of both glass panels (1, 12) over the sides of the rungs (3) facing the glass panels (1, 12). Insulating glass pane according to claim 11, characterized in that the compressible end pieces (4) have an excess of 1 mm to 2 mm compared to the predetermined spacing of the glass sheets (1, 12), by which they are compressed when the insulating glass pane is assembled. Insulating glass pane according to one of Claims 9 to 12, characterized in that the rungs (3) are hollow and end pieces (4) are inserted into the hollow rungs, which have a shaft (5) and a head (8) projecting over the shaft and one have a slot extending from the head (8) and extending into the shaft (5), and that the end pieces (4) are inserted so deeply into the rungs (3) that their head (8) on the rungs ( 3) strike. Insulating glass pane according to one of claims 9 to 12,
characterized in that the insulating glass pane has a non-rectangular outline and accordingly a rung frame in which at least one rung (3) is cut obliquely and an end piece (4) is provided on the obliquely cut end of the rung (3), which is a head has a two-armed lever (117) pivotally attached to the shaft (5), the pivot axis (115, 116) of which extends perpendicular to the glass panels (1, 12). Insulating glass pane according to one of claims 9 to 12,
characterized in that the insulating glass pane has a non-rectangular outline and accordingly a rung frame in which at least one rung (3) is cut obliquely and at the obliquely cut end of the rung (3) there is an end piece (4) which is the head of two has pivotable one-armed levers (126, 127) attached to the shaft (5), the pivot axes (115a, 116a; 115b, 116b) of which run perpendicular to the glass panels (1, 12). Insulating glass pane according to claim 14 or 15, characterized in that the rungs (3) are hollow and end pieces (4) are inserted into the hollow rungs, which have a shaft (5) and a head projecting over the end of the rung (3) and one have a slot (9) extending from the head and extending into the shaft (5) and inserted so deeply into the rungs (3) that their head strikes the rungs (3). Insulating glass pane according to claims 14 and 16, characterized in that the shaft (5) has a tip (8) cut obliquely on one side and the pivot axis (115, 116) thereon. Insulating glass pane according to claim 16, characterized in that the shaft (5) has a tip (8) which is cut obliquely on both sides and has two pivot axes (115a, 116a; 115b, 116b) or a pivot axis in the center. Insulating glass pane according to one of Claims 14 to 18, characterized in that the levers (117; 126, 127) are divided parallel to the glass sheet (1), but their two parts are connected to one another by one or more flexible or resilient brackets (124, 125). Insulating glass pane according to claim 19, characterized in that the brackets (124, 125) are film hinges. Insulating glass pane according to claim 19 or 20, characterized in that the brackets (124, 125) are arranged at the free ends of the levers (117; 126, 127). Insulating glass pane according to one of claims 14 to 21, characterized in that the axes (115, 116; 115a, 116a; 115b, 116b) are divided transversely. Insulating glass pane according to one of claims 19 to 22, characterized in that the axes (115, 116; 115a, 116a; 115b, 116b) have stops (128, 129) facing the glass panels (1, 12) for the respective part of the lever (117; 126, 127) . Insulating glass pane according to one of claims 14 to 23, characterized in that the levers (117; 126, 127) adjacent to the axis (115, 116; 115a, 116a; 115b, 116b) have a cutout (118) in which the shaft (5 ) immersed. End piece for rung frames according to one of claims 9 to 24 for use in rectangular and non-rectangular insulating glass panes. Auxiliary device for inserting a rung frame into the space enclosed by a thermoplastic spacer (2) on a glass sheet (1), characterized by a horizontal conveyor (13) on which the glass sheet (1) stands and one above the horizontal conveyor (13) extending support device (20) against which the glass sheet (1) is leaning, and means (15) for positioning the glass sheet (1) at a predetermined position on the horizontal conveyor (13),
and with guide elements (16, 17, 25) which extend along the horizontal conveyor (13) and perpendicularly to the latter and parallel to the support device (20) and have guide surfaces (16a, 17a) on which the rung frame (18) fits into it intended position on the glass sheet (1) can be brought. Auxiliary device according to claim 26, characterized by baffles (25) which are arranged directly next to the inside (2) of two sections of the spacer (2) which extend at right angles to one another and after the rung frame (18) has been glued to the one glass sheet (1) vertically is removable from this. Auxiliary device according to claim 26, characterized by contact strips (16, 17) which can be moved from an inactive position into an effective position, for this purpose in particular can be pivoted into an effective position about an axis parallel to the adjacent edge of the glass sheet (1), in which has a contact surface (16a, 17a) parallel to the adjacent edge of the glass sheet (1) perpendicular to the glass sheet (1) at a short distance above the spacer (2) and at a short distance from the glass sheet determined by the inside of the immediately adjacent section (1) is perpendicular to the tangential plane (2a), ie within the area enclosed by the inner tangential surface of the spacer (2).

Images