DE3126996A1 - METHOD FOR PRODUCING THE FIXED COMPOSITION OF INSULATING GLASS PANES - Google Patents

Description

Description:

The invention addresses the problem of connecting two or several single glass panes to form an insulating glass pane under Interposition of a spacer frame made of metal and at the same time Sealing of the insulating glass pane by means of a hot glue.

It is already known to coat the spacer frame for an insulating glass pane on its two side surfaces and at the same time on its outer sides connecting the side surfaces with a hot-melt adhesive - also known as "hot-melt" in English usage. The spacer frame coated in this way is then placed on a cleaned pane of glass and pressed lightly, and then a second, cleaned pane of glass is placed on the other, still free side of the spacer frame and pressed on.In this way, a double pane with initially only moderate cohesion is obtained. So that the hot-melt adhesive at the interfaces to the two individual panes can develop its full adhesive strength, it must be activated, which is done by re-heating to its species-specific working temperature, is which usually zwischer in the range 120 ⁰ C to 150 ⁰ C. In the prior art, infrared heaters are used to heat the hot melt adhesive, which are arranged on both sides of the double pane (insulating glass pane). There a plant

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Suitable for assembling insulating glass panes for the production of insulating glass panes in a wide variety of formats must be (the edge lengths of the panes typically vary between ' see 0.3 m and 2.5 m), uses a state-of-the-art one Device a continuous furnace, which two to each other parallel fields of closely arranged, permanently burning Has infrared radiators, the size of the fields to the is adapted to the largest possible slice formats. Between the two The insulating glass panes are heated by diffuse infrared radiation. Behind the fields as seen in the direction of passage from infrared radiators is in the known device "a throughfeed press in the form of two parallel, counter-rotating rollers driven with the same peripheral speed, the still hot insulating glass panes are passed through the roller gap and pressed to the final thickness.

In order to be able to work efficiently, the operating speed of the device consisting of a continuous furnace and a continuous press should be not be slower than the speed of the other stations of the production line, in some cases the continuous furnace and the continuous press are integrated. This requires that for the continuous furnace

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Installation of a very high electrical heating power of more than 50 KW. This results in several disadvantages, For one has to dissipate the permanently accumulating heat loss, which is expensive. On the other hand, they have to be in a continuous furnace consistently heat-resistant materials are used, which increases the cost of the conveyor in particular. Furthermore must Thermal insulation is used, which absorbs the useless radiation, i.e. the radiation that passes through the insulating glass pane "and the intercept the radiation passing by the insulating glass pane, and Finally, the heat generated must be removed from the room in which the continuous furnace is installed.

The invention is based on the object of making a method available which allows, with less installed heating power, with less heat loss and with less outlay in terms of equipment, the hot-melt adhesive between the individual panes of glass Heat insulating glass pane and then the insulating glass pane to press.

The invention solves this problem by a method having the features specified in claim 1.

Because the heat radiator always only on the edge area

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of the insulating glass panes, i.e. on the legs of the spacer frame aligned, the radiant heat is only applied locally where it is needed, which means that the Compared to the prior art, the installed electrical power of a device operating according to the method is far greater is to be set lower.

The fact that the radiant heaters are only switched on at time intervals, namely not longer than between If the edge of an insulating glass pane is located on them, the energy consumption also drops significantly compared to the state of the art.

As heat radiation, types of radiation come into question, which can be bundled and a heating of hot glue strands in a reasonable way Allow time spans. Short-wave infrared radiation, which is emitted by so-called infrared light emitters, is particularly suitable will. Infrared bright radiators have those for the invention

characteristic
very valuable /, practically no heating-up time is required when switching on; rather, bright radiators provide the full heating power practically immediately after being switched on.

Because of the lower loss of heat generation and because of the alignment the radiation on the hot melt adhesive strands to be heated

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thermal insulation measures can be reduced to a minimum Ventilation of a device for carrying out the method can instead of a ventilation device required in the prior art done by convection alone.

The invention no longer uses two fields of heat radiators, whose diffuse radiation field is passed through by the insulating glass panes as a whole, but instead linear arranged. Spotlights, which are aimed at the edge areas der isolier ·) Lciyacheltien uusyt; are directed and their position den changing pane formats is always adapted anew.

The renouncement of fields of radiant heaters, which are so large that they cover the common pane formats, has yet another, very substantial advantage. In many cases it allows the insulating glass panes to be removed without special effort Run between a Wizen pair, but static, cUi. between To press press beams or press plates (claim 2). If pressing bars are used, they can be placed directly alongside the Radiators are arranged so that after heating the hot glue on one of the legs of a spacer frame, the associated edge area of the insulating glass pane without any significant delay

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can be transferred between the press beams and pressed. In the prior art, the press cannot be arranged in the heating zone will. Instead, in the prior art, a roller press is arranged directly behind the heating zone, which presses the insulating glass panes in motion as soon as they leave the heating zone.

In the case of the invention, heating of the insulating glass panes is possible both when the insulating glass pane is at rest and while it is in motion. The hot-melt adhesive strands are preferably irradiated along the individual spacer frame legs as a whole with the pane at rest and heated up, i.e., in a device operating according to the method, the panes are stopped for irradiation (claim 4). This is in terms of speed of operation, however no disadvantage, because this is how the infrared heaters available today have Power outputs up to 60 W / cm lamp length; this enables the hot glue to reach its working temperature within a few seconds to heat up. The cycle times resulting therefrom for devices operating according to the method are not higher than the cycle times of other stations in an insulating glass production line, with which a device operating according to the invention ■ must work together.

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Since radiant heaters have a limited length, it can happen that the edge length of an insulating glass pane is greater than that Length of the radiant heater directed at this edge. In this case one could think of at least two spotlights in a row to be arranged and the second radiator only 'with correspondingly large to connect format insulating glass panes. However, this is particularly disadvantageous when using infrared bright radiators connected, as the radiators have to partially overlap at the ends and thus, on the one hand, do not lie in a common alignment gen and on the other hand can be heated impermissibly at their ends. A better option is to cut long disc edges in zv Steps to heat. The most suitable, however, is likely to be the edges of the disk that are longer than the beam directed at them to be heated in the passage between the emitters and pressed in a press downstream of the emitters. There big panes usually be promoted so that the long edge in the conveying direction points, the long edges pointing in the conveying direction are therefore advantageously irradiated in the run, whereas the Shorter edges of an insulating glass pane running transversely to the conveying direction are still static, i.e. irradiated when the pane is stationary can be (claim 3).

Appropriate and advantageous devices for implementation

of the method according to the invention are the subject of claims 9 to 37.

A very simple device (claim 9) already comes with it two facing infrared heaters, between which the four edges of the insulating glass panes are passed. The panes can be transported in the usual way, e.g. lying on roller tables or on a roller table or standing on a conveyor belt, whereby in the case of standing transport the panes are usually attached to a supporting wall (roller wall, Air cushion wall or the like) are ajar. Because of the smaller footprint the transport of upright insulating glass panes is preferred (so-called vertical system). Under the funding level one In this context, insulating glass pane becomes one in the insulating glass pane Understood lying plane parallel to the disk surfaces.

The one pair of radiators is arranged so that the incoming insulating glass pane with one of its edges into the space immerses between the emitters and then stops. Then the emitters are switched on for a predetermined period of time, in which they the heat running on this edge of the pane

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heat up the glue strand. Subsequently, the
Disc or the press beam, which are preferably coupled to the radiator next to which they are arranged and borrowed together differently (claim 29), brought the disc edge with the heated hot glue strand between the press beams, for which a displacement of a few centimeters is sufficient with the appropriate arrangement,
and the edge of the pane is pressed to the final thickness. To
the release of the disc by the press beam becomes the disc
passed to a known pivot device, pivoted by 90 ver and brought by method by means of the conveyor with the second edge between the infrared radiator. The processes are now repeated until all four edges of the insulating glass pane are pressed together. The pane is then conveyed away.

The processes are controlled in the usual way by switches that respond to the position of the pane, in particular without contact appealing switches, and timers.

The two emitters can run parallel to the conveying direction. Each disc must then be pivoted a total of three times by 90 °. However, the two radiators are preferably at right angles to each other Conveying direction arranged; in this case, the

edges of the slices running perpendicular to the conveying direction are heated and pressed one after the other. The disk is then swiveled by 90 and the other two become now machined disk edges running perpendicular to the conveying direction. All in all, only one swiveling process is necessary.

To increase the throughput of such a device, several units of radiators can be used one behind the other in the conveying direction and arrange pairs of press bars and between each a pivot device provide; It is then possible to work on several insulating glass panes at the same time (claims 10 and 11). At · in the conveying direction radiators running at right angles to the conveying direction can make sense with two or four units Radiators makes sense to use two units of radiators and press beams. With four units, each edge becomes a disc machined in another unit, with two units, two opposite edges of the insulating glass panes are in each case processed by the same unit.

To increase the throughput of the device, however, two units of pairs of radiators and press bars can also be provided and are arranged such that of each insulating glass pane

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two edges can be edited at the same time (claim 12). For this purpose, the units can be made up of pairs of radiators and associated pairs of press bars arranged at right angles to each other so that two adjacent edges of the insulating glass panes can be processed. Between every two heating and pressing processes is then a pivoting process in which the blade is pivoted through 90 ° (claim 13). It is particularly preferred however, an arrangement in which the pairs of radiators and press beams are parallel to each other; avoids in this arrangement a possible crossing of radiators in the area of the panes corners. Instead, at least one pair of radiators together with the associated pair of press bars is to be provided so that they can be displaced in parallel an adaptation to changing pane formats is possible (claim 14). The displacement of the radiators and pairs of press beams can be done automatically by the size of each incoming insulating glass pane scanned by sensors and the measurement signal for Control of a servo drive is used, which makes the necessary displacement.

Both in an embodiment according to claim 12 and such according to claim 14 can in a manner analogous to that in the Arrangement according to Claims 10 and 11, two groups of two each

.Pairs of radiators and pairs of press bars be arranged one behind the other in the transport direction, with a pivoting device for the insulating glass panes in between, so that two panes are always processed at the same time to increase the throughput of the device
can be. Are the first two edges of a disc
processed, it is pivoted and passed to the second group for processing the other two edges, so that the first
Group can already accommodate the following disc (claim 15).

A device for carrying out the method according to the invention, which does not require a pivoting device for the insulating glass panes, is the subject of claim 16. In the simplest case, the device contains only two units of a pair of press bars and infrared radiators, one of which is oriented in the conveying direction and the other transversely thereto . If the insulating glass pane first reaches one that runs parallel to the conveying direction
Unit, then the one pane edge parallel to the conveying direction is processed first, then the unit is shifted to the opposite pane edge (or - cf. claim 17 - the pane is shifted until its opposite edge is in the effective area
the radiant heater press beam unit) and processed it.

The insulating glass pane is then conveyed further and its front edge reaches the effective area of the unit of radiant heaters running perpendicular to the conveying direction and pair of press bars. After the front edge of the pane has been processed, the pane is conveyed on until the rear pane The edge of the pane comes into the area of action of the unit; After the rear edge of the pane has been processed, the pane is conveyed away.

A shorter overall length can be achieved if the crosswise to the Arranges the unit of radiators and press beams running in the direction of conveyance in front of the unit parallel to the direction of conveyance. then The first is the front edge of the pane, then the rear edge of the pane and then the two that run in the conveying direction Disc edges machined. If you let the two units spatially connect directly to each other, then you can machine the rear edge of the pane even at the same time as one of the pane edges running in the conveying direction (claim 18). Such devices require only moderate installed electrical power.

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The throughput can be increased with those without a swivel device Working devices achieve that you have two units of heat radiators and pairs of press bars in parallel and arranged transversely to the conveying direction in such a way in "conveying direction" one behind the other that two insulating glass panes at the same time can be edited (claim 18). This can be done, for example, by having two radiant heaters and two pairs of press bars, which run parallel or perpendicular to the conveying direction, combined to form an angular unit (cf. claim 20), so that with one angle unit two adjacent edges of an insulating glass pane and with the other angle unit the two remaining edges of the insulating glass pane can be processed, namely the two angular units with such a large distance from each other arranged that two insulating glass panes can be processed at the same time; in this case will be in the first winker unit the first two disc edges are processed and after the disc has been transferred to the second angular unit, the other two disc edges machined; the two angular units can also be arranged in a square so that they are simultaneously or shortly after one another after slight displacement of the insulating glass pane or an angle unit, the insulating glass pane at all edit four borders. The arrangement in the square is somewhat

more manoeuvrable than the arrangement of the angle units with such a distance, that two insulating glass panes can be processed at the same time, however, saves a considerable amount of space for the Device and allows approximately the same throughput.

Further possibilities of working on two insulating glass panes at two edges at the same time arise when you have four Provides units of radiant heaters and pairs of press bars, two of which are oriented parallel to one another and in the conveying direction are and of which the other two are arranged parallel to each other and at right angles to the conveying direction and with the two first units are not combined into angular units, but act independently of these on the insulating glass panes (Claim 21). Of the two units oriented parallel to the conveying direction, at least one must be in the conveying plane transverse to the Conveying direction be displaceable in order to adapt to different ^ To enable slice formats. Accordingly, a shiftable Ability to be provided in the conveying direction for one of the units running transversely to the conveying direction if both the front and the the rear edge of an insulating glass pane is to be processed at the same time. Without reducing the throughput of the device and without increasing the space requirement of the device, one can use any < Refrain from the front and rear edges of an insulating glass

pane can be machined at the same time if instead three insulating glass panes are machined in the device at the same time. this can be done, for example, by placing one of the heat radiator press beam units running transversely to the conveying direction just in front of and the other unit was arranged just behind the two heat radiator press beam units running parallel to the conveying direction With such an arrangement, the front edge of an incoming insulating glass pane can first be processed. Afterward the disk is transported to the area of the two units parallel to the conveying direction, where the two units to the conveying direction parallel edges of the discs are machined. At the same time, the following disc can be processed on its front edge will. The ® -ste pane is then used for processing their rear edge is transported further into the working area of the rear, transverse to the conveying direction running heat radiator-press beam pair unit, while at the same time the second disc enters the working area of the units parallel to the conveying direction advances and the following third disc with its front edge in the working area of the front, transversely to the conveying direction running unit advances (claim 22).

across

But it is also possible to have the two / to the conveying direction Units in front of or behind the two parallel to the

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To arrange the conveying direction running units (claim 23). If the units running transversely to the conveying direction e.g. behind the units running parallel to the conveying direction, an incoming insulating glass pane first processed the two edges parallel to the conveying direction. Then the disc with her front edge in the working area of the front, transverse to the conveying direction unit is advanced and processed while at the same time, the following disc enters the working area of the units parallel to the conveying direction and is processed there will. Then the first disc advances until its rear edge is in the working area of the rear one, across the The unit is in the direction of conveyance, while at the same time the second disc is in the working area of the front one, transversely to the The unit running in the direction of conveyance and a subsequent third disc in the working area of the unit parallel to the direction of conveyance Units advance, etc. The two units running transversely to the conveying direction can also be combined to form a compact, higher-level unit Be connected unit (claim 24).

Finally, it is also possible to consist of a heat radiator press bar running parallel and a transverse to the conveying direction.

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pair unit to form a fixed angle unit, which by a to adapt to different pane formats, a movable third unit is added to form a U-shaped unit, in which the respective insulating glass pane can run in. The fourth edge of the disc can then be heated by a separate unit and be pressed; the completion of the U-arrangement to a square in which all four edges of a disc simultaneously can be machined is possible, but requires some design effort because of the crossing of some of the units.

It is easier to form a square that only heats up includes, but not press beams. The slim, light, but stable, rod-shaped or tubular spotlights can when used of designs which only have electrical connections at one end, combined to form a rectangle of varying sizes that the end of a radiator that is not provided with connections abuts the jacket of another radiator. An insulating glass plate warmed up in such a square can then guided by a roller press or fed to a static press having two press plates 25 and 26).

Beam presses, roller presses and roller presses, which can be used in the context of the invention, have been with success since

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long used in the manufacture of a type of insulating glass. the metallic spacer frame between the panes Are covered on both sides with a butyl rubber strand. The hot glue used in the context of the invention are, however, after they have been activated by heating, they are considerably softer and less tough than butyl rubber rods. Therefore, the height must be and the uniformity of the pressure in the case of insulating glass glued with hot-melt adhesive is kept much more carefully under control than with insulating glass glued with butyl rubber. If this does not happen and the pressure is too high locally, then it can the hot glue in places to such an extent from the space between a spacer and the adjacent glass plate ■ squeezed out so that there is direct contact between the glass plate and spacer. However, this must be under to be avoided at all costs. It has now been found that you can have a perfect pressing of glued with hot melt adhesive Can achieve insulating glass without a complex pressure control when using a surface press (claim 27). In this context, a surface press is understood to be such a press which the individual insulating glass pane can completely cover on both sides and with which the insulating glass pane durc a single press stroke, i.e. in one step, as a whole statis . is pressed. The insulating glass panes are most useful

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pressed between two plane-parallel plates (claim 27), but it is also possible instead of a closed pressing plate to select a perforated press plate, e.g. a kind of rake, a roller field or a roller field; thus achieved Although the pressing member does not have a full-surface contact with the insulating glass panes, since the activated hot-melt adhesive is quite soft, only relatively low pressing forces are required and these can also be applied evenly to the hot-melt adhesive strands from the glass plates themselves be distributed; However, care must be taken to ensure that the distance between the roller or roller fields and the size of the openings is chosen so small in a press plate that the pressing force does not result in inadmissible bending of the glass plates.

It is clear that a surface press and an arrangement of heat radiators, one or the other of which can still be displaceable, cannot easily be combined into a spatially uniform device. However, it has been shown that hot melt adhesives hold the radiated heat relatively well in the space between a spacer frame and an adjacent glass plate, so that it is possible to arrange the surface press in the conveying direction behind the radiant heaters (claim 28). The radiation of heat into the hot-melt adhesive strands and the pressing are therefore advantageously carried out separately both spatially and temporally. ■ "\ ν:

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31269 9

The arrangements of the radiators can be chosen accordingly

who as in the examples according to claims 8-25, wherein those Arrangements are particularly preferred which have a particularly short period of time between the end of the heating of a hot melt adhesive strand and the pressing process.

In all of the aforementioned embodiments with the exception of the objects of claims 25 to 28 are in the units of radiant heaters and pairs of press bars lying next to each other

Radiant heaters and pairs of press bars cannot be displaced relative to one another arranged (claim 29). Around the edge of a pane that has been heated between radiators into the work area To bring the press beam, one can use the disc or the unit of heat radiator and press beam pair around the center distance proceed between the heat radiator and the press beam lying next to it (claim 29).

A substitute for static pressing using a press beam or surface press through a throughfeed press for the parallel to the conveyor direction Edges or for all four edges of the insulating glass panes is quite possible, although static pressing is preferred from the viewpoint of pressing success. A device according to the

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Proverbs 30 to 32, in which at least the heat radiators running at right angles to the conveying direction in the conveying direction can be moved synchronously with the insulating glass panes and in which a Connected to a continuous press, the insulating glass panes can also be processed at least partially in a continuous process, e.g. in the Way that initially two pairs of heat radiators which run transversely to the conveying direction and are coupled with press beams (claim 31) are arranged are, which are arranged downstream of two pairs of heat radiators parallel to the conveying direction in the conveying direction; with this arrangement the two disc edges running transversely to the conveying direction are irradiated at rest and statically pressed between the press beams, whereas the other two edges of the pane are irradiated in the throughfeed and pressed in the downstream throughfeed press.

In contrast to that known from the prior art, with diffuser Thermal radiation working device, the invention is ideally suited for the production of triple insulating glass panes, if you do not arrange the parallel to the spacer legs heat radiator next to these legs that the The main direction of radiation runs at right angles to the conveying plane and strikes the side surfaces ofer spacer legs, but rather

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by placing the radiant heaters parallel to the spacer frame legs, however, arranged in an inclined position that the heat radiation in the side surfaces of the spacer legs one of 90 different angles meets (claim 6), preferably so that the respective edge joints in the shadow of the spacer frame lie (claim 7). Particularly suitable angles are between 40 and 70. Usually the radiant heaters have a preferred direction of radiation; they are then expediently arranged so that the spacer legs to be irradiated lie approximately in the direction of the maximum radiation intensity. With such an oblique direction of irradiation you can use a single radiant heater, the two side surfaces facing in the same direction of two adjacent spacer frame legs a triple insulating glass pane can be irradiated in a targeted manner at the same time.

It is even possible, instead of a pair, from both sides of the funding level arranged heat radiators a lying in the conveying level the radiation on the front side in the rare joints of the insulating glass panes providing directional heat radiator (claim 34). However, this requires an extension of the heating-up time, at the same time, however, the outlay on equipment is reduced. For reasons of yield, infrared radiators are recommended according to claim 35,

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for reasons of handling and stability and cfer heat flux density such according to claim 36.

For shielding and further concentration of the thermal radiation on the edge area of the insulating glass panes, it is advisable to use the To surround infrared radiators with a further reflector (claim 37).

The attached schematic principle drawings of differently structured are used to further explain the invention Devices in which insulating glass panes, which are held together by spacer frames coated with hot glue, can be heated and pressed at the edge.

Fig. 1 'shows the principle of a device with four

units of radiant heaters and press beams arranged one behind the other,

Fig. 2 shows in section the structure of such a unit

from infrared heaters and press beams that

3 to 12 show the basic structure of further different ones Devices, and

· _. Fig. 13 _ shows the arrangement of a heat radiator in ■; ^ Processing of triple insulating glass panes.

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The various drawings always show the devices in vertical construction, i.e. the insulating glass panes are standing transported through the devices. However, the designs shown can also easily be applied horizontally, i.e. Transfer devices working with horizontal disks.

In the device shown in Fig. 1, the insulating glass panes 7, standing on a conveyor belt 1, is moved step by step through the device in the conveying direction 2. At intervals which is at least twice the maximum edge length of the insulating glass panes 7 are along the conveyor belt 1 four units 3 of heat radiators 12 and press beams 14 are arranged, namely the radiators 12 and press beams 14 arranged on both sides of the conveyor belt 1 and thus also on both sides of the continuous insulating glass panes 7 (see Fig. 2, where only the one holding of such a unit 3 is shown). Infrared bright radiators are preferably used as heat radiators 12 used which oval quartz glass tubes with one through one Have split double chamber; the heating wire is arranged in a U-shape, i.e. it runs in front of and in one chamber back to the other chamber; the electrical connections are therefore only present at one end of the tube. The infrared light emitter

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is mirrored on the back and parallel to the conveying direction 2 extending groove 11 of a carrier 15 housed.

For heating that located between the individual glass panes 16 and the spacer frame 8 of the insulating glass pane 7 Hot glue 9, the carrier 15 with the heat radiator 12 is attached at the level of the spacer frame 8. The distance is preferably between 2.5 and 5 cm.

With the pane 7 at rest, the hot glue 9 is applied in a few seconds heated to its working temperature; then the unit is raised by the path a (Fig. 2), so that the press beams 14, which arranged and guided below the heat radiator 12 in a recess 13 of the carrier 15 that extends to the conveying direction 2 are, reach the height of the spacer frame 8, and the static ' Pressing process triggered by pushing out the press beams 14 on both sides of the conveyor belt 1.

The disc 7 is then removed from the work area by the conveyor belt of the first unit 3 and reaches a pivoting device 4. The device has three such pivoting devices

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directions 4 in the middle between each two of the units 3. Dj swivel device consists of both in the example shown of the conveyor belt 1 arranged at right angles to one another, the apex and pivot point of which is at the level of the conveyor belt 1. I. Arms carry suction cups which grasp the disk 7 and pivot it by 90 in the direction of the arrow 6. The panned vision; 7 is then moved forward to the next unit 3, etc., until all four edges are pressed.

The device can thus process 4 panes 7 at the same time. Provided that the associated reduction in throughput in Can take purchase, you can do without two pivoting devices 4 and three units 3. After swiveling a Schaibi 7, the drive of the conveyor belt 1 is reversed and the disk 7 is moved back to the single unit 3. This is done three times one after the other until all four edges of a disc 7 are verprel. Then the disc 7 is conveyed away.

The following exemplary embodiments are identical or similar Components are designated with matching reference numerals.

In Fig. 3 are each parallel to the conveying direction 2 and one

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Unit 3a or 3b, consisting of a pair of press bars and a pair of heat radiators, combined to form angular units 23 'and 23 ¹¹ , perpendicular to the conveying direction 2, parallel to the conveying plane (ie parallel to the insulating glass panes 7). In the first angle unit 23 'the lower and front edge of the insulating glass pane 7 are heated, then brought into the area of the press beams by moving the pane 7 by the distance a (FIG. 2) and lifting the angle unit 23' by the same amount and pressed. The pane 7 is then moved to a pivoting device 4 arranged between the angle units 23 'and 23 ", pivoted by 90 ° and moved to the second angle unit 23' where the two remaining disc edges are machined in the same way. The angular unit 23 has the same shape as the angular unit 23 ′, from which it emerged by rotating the pivoting device 4 by 90 degrees counter to the direction of rotation 6. The device is suitable for the simultaneous processing of two insulating glass panes 7.

In the device according to FIG. 4, there are also two angle units 23 · and 23 '· provided one behind the other, but in a complementary arrangement, so that the disks 7 do not rotate is required. The first angle unit 23 'processes the

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front and lower edge of the pane, the second angle unit 23 ' the top and rear edge of the pane. The second angular unit 23 does not only have to travel transversely to the conveying direction 2 by the distance a (FIG. 2) be movable, but also to adapt to different pane heights, which the Vorrichtunc can be measured automatically and entered into a servomotor * can.

The device according to FIG. 5 uses a horizontal and a vertical unit 3a and 3b at a distance one behind the other Heat radiator and press beam pair. The unit 3 a is arranged above the conveyor belt 1. Each incoming slice 7 wire stopped under the unit 3a and then by a lifting device gradually raised, whereby successively the upper and the lower edge get into the working area of the unit 3a and heated and be pressed. Then the disk 7 is lowered back onto the conveyor belt 1 and moved to the second unit 3b, where ir As already described, first the front and then the rear edge of the disc. 7. to be edited. The device is suitable for the simultaneous processing of two panes 7. Of course, the first unit 3a could also be moved up and down instead of

raise and lower the discs 7. This device works with very little effort.

The device according to FIG. 6 has compared to that shown in FIG a higher throughput, because it allows the simultaneous processing of three insulating glass panes 7 They initially have two units 3a, which are arranged at a distance one above the other and parallel to the conveying direction 2, of which the upper one also to the Can be adjusted up and down to accommodate different pane heights. A disk 7 is stopped between these two units 3a and processed at the same time on the upper and lower edge of the pane. Then the disc 7 is conveyed until it is with her front edge enters the working area of a first unit 3b running transversely to the conveying direction 2. After editing the front The edge of the disc 7 is further conveyed until it is with its rear Edge in the work area of a second, subordinate unit 3b got. While the rear edge is being processed there, the front edge is simultaneously a first in the front unit 3b subsequent disc 7 and between the units 3a of the upper and lower edge of a second subsequent disc 7 machined. The two units 3b are rigidly connected to one another, but can also be separate.

A modification of the device from FIG. 6 is shown in FIG. 7.

There the two units 3b running transversely to the conveying direction 2 are separated and in front of and behind the two horizontal units Units 3a arranged. The first of the units 3b again processes the front, the second of the units 3b the rear Pane edge. The device is very compact.

The device according to FIG. 8 is a modification of the device from FIG. 6, namely the two are transverse to the conveying direction 2 running units 3b are not combined to form a superordinate unit, but are arranged one behind the other at a distance, so that the front and rear edges of a disc 7 can be processed simultaneously. To do this, at least one of the units must be 3b can be displaced in the conveying direction 7. The device is suitable for the simultaneous processing of two panes 7.

Fig. 9 shows the principle of a device in which the insulating glass panes 7 can be processed in one go. It contains two: pairs of heat radiators 12a parallel to the conveying direction 2, One pair, the upper one in FIG. 9, can be moved up and down to adapt to different pane heights. It contains furthermore two pairs of perpendicular to the conveying direction 2

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Heat radiators 12b, which can be moved separately and synchronously with the panes 7. An incoming disc 7 will automatically measured and set the height of the upper radiator 12a accordingly. In the starting position are the two radiators 12b on the left edge of the heating zone. If the front edge of the disc 7 reaches the heating zone, all of them will Emitter 12a and the right emitter 12b switched on, the latter moving synchronously with the front edge of the pane 7 will-. At the end of the heating zone, there is a continuous press 17 (roller press). The right spotlight remains in front of it • 12b stands and switches off. In the meantime, the disk has 7 with it its rear edge reaches the left vertical radiator 12b, whereupon this also moves synchronously with the rear edge of the pane to the end of the heating zone and switches off there. At the same moment, the horizontal radiators 12a also switch off. While the disk 7 is moved through the press 17, the two vertical pairs of radiators 12b are hastily in their left starting position moved back and the device is ready to receive the subsequent disc 7.

10 shows a vertically operating device in which the insulating glass panes 7 are partly static and partly in motion be pressed. The insulating glass panes 7 reach first

two closely spaced vertical one behind the other Units 3b from heat radiator and press beam pairs. Each insulating glass pane 7 is first with its front edge in the first vertical unit 3b statically heated and pressed, then conveyed further in the direction of arrow 2 until you are behind Edge reaches the area of the second vertical unit 3b and is statically heated and pressed there, while at the same time In the first vertical unit 3b, the front edge of the subsequent insulating glass pane 7 is processed. The vertical units downstream are two pairs of horizontal heat radiators 12, of which the upper pair is adjustable in height. Between Heat radiator pairs 12, the two horizontal edges of an insulating glass pane 7 are heated in the run and then get into a « the heat radiators 12 immediately downstream of the continuous roller press 17. Instead of the roller press 17, a two-part belt or roller press could also be used, which is aimed only at the dj acts on the horizontal edges of the pane; One part of this band oc roller press is stationary in the area of the lower edge of the disc installed and the upper part of the belt or roller press becomes expediently arranged height-adjustable together with the upper heat radiator 12. If insulating glass panes 7 are processed, their If the horizontal edges are shorter than the horizontal radiant heaters, then the horizontal pane edges can of course also be static instead of being heated in the flow.

A device similar to FIG. 10 is shown in FIG. 11, but the horizontal heat radiators 12 are at such a large distance from the vertical ones Units 3b arranged that during the heating of an insulating glass pane 7 between the horizontal heat radiators 12 the subsequent insulating glass pane can already be heated and pressed in the second unit 3b. Overall can in this Device so three insulating glass panes 7 are processed at the same time.

In, the embodiments of FIGS. 10 and 11 can be advantageous for the press quality the throughfeed press 17 also by a static surface press such as a platen press 18 as in the example of Figure 12 below may be used.

12 shows a device with four pairs of heat radiators 12c-f arranged in a square. A pair of radiators 12c is along of the conveyor belt 1 arranged immovably and abuts with its tips, at which no feed lines emerge, to the Jacket of a vertically arranged, vertically displaceable pair of radiators 12d on; this in turn hits with its tips, from which no feed lines emerge, to the jacket of an upper, parallel to the conveying direction 2 and both horizontally

as vertically displaceable pair of emitters 12e; this in turn butts with its tips, from which no feed lines emerge, on the jacket of a vertical, vertical "and horizontal displaceable pair of radiators 12f .an, which in turn abuts with its' tips on the jacket of the lower pair of radiators 12c. The size of this square can be adapted to most of the pane dimensions. All four are in the square The edges of an insulating glass pane are heated at the same time. Then the radiators 12c-f are switched off and the pane rushed to a downstream one static press 18 promoted, where it pressed between two Preßpüätten as a whole to its final thickness will.

Ptq. Ii zfiLtjt .ils Uetrill in section the arrangement of a double intrarotheiliitruhlerü V ?. inclined * /. u of a triple insulating glass pane 7. The radiator 12, which is mirrored on the back, is arranged in a beveled aluminum reflector 19 with an approximately U-shaped cross-section, which additionally shields the radiator 12 and also bundles the heat radiation onto the two spacer frames 8. The opening of the reflector 19 extends right up to the insulating glass pane 7 the inclined arrangement of the radiator 12 with its main radiation direction 21 at an angle of approximately 45 to the plane of the

BATH ORIQIiMAL

Insulating glass pane 7, the side surfaces of the two spacer frames 8 facing the radiator 12 can be exposed to thermal radiation at the same time. The side surface of the distant spacer frame 3 (on the left in FIG. 13) should be in the main radiation direction, since the radiation suffers greater losses on the way there than on the way to the nearby spacer frame 8 the emitters 12 can be displaced in the direction of arrow 20, to move the main radiation direction 21, in particular when changing from double to triple insulating glass panes, also in the direction of arrow 22 parallel to the pane surface. On the opposite side of the insulating glass pane 7 there is a similar radiator 12 in a mirror-image arrangement, which has not been shown for the sake of simplicity.

Corresponding devices, which are also used for the production of triple insulating glass panes are suitable can also be realized with units in which not arranged on both sides of the panes 7 Heat radiator 12, but the hand joints 10 of the panes 7 opposite Heat radiators 12 are used.

Claims (1)

· »PATENT LAWYERS:." ". . ". DRrRUDOLF BAUER · DiPL.-SNG: HELMUT HUBBUCH 3126996 DIPL.-PHYS. ULRICH TWELMEIER WESTERN 29 - ■ 31 (AM LEOPOLDPLATZ) D-7530 PFORZHEIM iwestgermany) β (07231) 10 22 BO / / 0 TELEGRAM b PATMARK July 7, 1981 III / Be Karl Lenhardt, 7531 Neuhausen-Hamberg "Process for producing a solid bond between insulating glass panes" Patent claims: Process for the production of the solid bond of insulating glass panes, their individual panes of glass are connected by spacer frames coated with a hot-melt adhesive on three sides and be kept at a distance at the same time, by heating the hot glue in the space between the individual panes of glass and the side surfaces of the spacer frame Irradiating the insulating glass pane with heat radiation from elongated heat radiators, in particular with short-wave infrared Radiation from elongated infarothel lsirahlern and through an- final pressing of the insulating glass panes to their final thickness as long as the hot melt adhesive is still hot, characterized in that the heat radiation is only generated and bundled and specifically directed mainly at the edge area of the insulating glass panes during a time interval sufficient to heat the hot melt adhesive to its working temperature. 2. The method according to claim 1, characterized in that the stationary insulating glass pane is pressed statically. 3. The method according to claim 1 or 2, characterized in that at least the two verlaufei transversely to the conveying direction Edges of an insulating glass pane are irradiated in peace. 4. The method according to claim 3, characterized in that all <four edges of an insulating glass pane are irradiated at rest will. 5. The method according to any one of the preceding claims, characterized in that the insulating glass panes simultaneously be irradiated on both sides. 6. The method according to any one of the preceding claims, characterized in that the thermal radiation in one of 90 °. different angles to the plane of the insulating glass pane against its Spacer frame is directed. 7. The method according to claim 6, characterized in that the heat radiation is radiated from directions against the legs of the spacer frame, which face away from the edge joints which are in front of the respective leg. 8. The method according to any one of claims 1-4, characterized in that the heat radiation at the end face in the edge joints Insulating glass panes is straightened, 9. Device for performing a method with the features according to any one of the preceding claims, by which the insulating glass panes are passed through lying or standing on a conveyor, characterized in that at least two parallel and facing, rectilinear heat radiators (12) parallel or at right angles to the conveying direction (2) and on both sides parallel to the conveyor of the insulating glass panes (7) are provided, and that next to the heat radiators (12) a pair of press bars is arranged, the press bars (14) run parallel to the heat radiators (12), and that at least one pivoting device (4) is provided for pivoting the insulating glass panes (7) by 90 in each case . 10. The device according to claim 9, characterized in that with parallel to the conveying direction (2) extending heat radiators (12) two or four pairs of opposing heat radiators (12) and associated pairs of press bars (14) are arranged at a distance one behind the other and that between each two pairs of radiators (12) a pivoting device (4) is arranged. 11. The device according to claim 9, characterized in that in the case of heat radiators extending perpendicularly to the conveying direction (12) two pairs of opposing heat radiators (12) and of associated pairs of press bars (14) are arranged one behind the other at a distance in the conveying direction (2) and that between each two pairs of radiators (12) a pivoting device (4) is arranged 12. The device according to claim 9, characterized in that at least two pairs of facing heat radiators (12) and an equal number of associated pairs of press bars (14) and a pivot device (4) are provided. 13. The apparatus according to claim 12, characterized in that two pairs of heat radiators (12) and associated with Press beams (14) are arranged at right angles to one another. BATH ORIGINAL 14. The device according to claim 12, characterized in that two pairs of heat radiators (12) and associated with Press beams (14) are arranged parallel to one another and variable in distance are. 15. Device according to one of claims 12-14, characterized in that two pairs of heat radiators (12) and of associated press beam (14) in the conveying direction (2) at a distance one behind the other are arranged and that a pivoting device (4) for pivoting the insulating glass panes (7) by 90 is provided between them is. 16. Device Bur carrying out a method with the Features according to one of claims 1 to 8, by which the insulating glass panes are passed through lying or standing on a conveyor, characterized in that two pairs of parallel and facing, rectilinear heat radiators (12) arranged on both sides parallel to the conveying plane of the insulating glass panes (7) are provided parallel and perpendicular to the conveying direction (2) , and that a pair of press bars (14) is arranged next to each pair of heat radiators (12), the press bars (14) of which run parallel to the heat radiators (12), at least one of the pair of heat radiators (12) and the associated pair of press bars (14) formed units (3) parallel can be moved to itself and parallel to the funding level. 17. Device for performing a method having the features according to one of claims 1 to 8, through which the insulating glass panes are passed through lying or standing on a conveyor, characterized in that two pairs of parallel and facing, rectilinear heat radiators (12) arranged on both sides parallel to the conveying plane of the insulating glass panes (7) are provided parallel and perpendicular to the conveying direction (2) , and that next to each pair of heat radiators (12) a pair of press bars (14) is arranged, the press bars (14) run parallel to the heat radiators (12), and that a device for moving the insulating glass panes (7) within the conveying plane, but at right angles to the conveying direction (2) is provided. 18. Device for performing a method with the Features according to one of claims 1 to 8, by which the insulating glass panes are passed through lying or standing on a conveyor device, characterized in that two pairs of mutually parallel and facing, straight lines, on both sides parallel to the conveying plane of the insulating glass panes BAD ORiGJiSSAL (7) arranged heat radiation (12) parallel and two more such pairs are provided perpendicular to the conveying direction (2), so that at the same time either an insulating glass pane (7) can be processed on all four edges or two insulating glass panes (7) on two edges each, and that next to each pair of heat radiators (12) a pair of press bars (14) is arranged, the press bars (14) parallel to the Heat radiators (12) run, at least one of a pair of heat radiators (12) and the associated one Press bar pair (14) formed units (3) is displaceable parallel to itself and parallel to the conveying plane. 19. Apparatus according to claim 16, 17 or 18, characterized in that the unit parallel to the conveying direction (2) (3a) from the pair of heat radiators (12) and the pair of press bars (14) from the adjacent, perpendicularly following in the conveying direction (2) to the conveying direction (2) running unit (3b) of heat radiator pair (12) and press beam pair (14) in conveying direction (2) have a distance which is greater than the greatest edge length of an insulating glass pane (7) for which the device is designed is. 20. Apparatus according to claim 16, 17 or 18, characterized in that - based on the conveying direction (2) - the perpendicular to the conveying direction (2) running unit (3b) Heat radiator pair (12) and press bar pair (14) close in front of the unit (3a) running parallel to the conveying direction (2) Heat radiator pair (12) and press bar pair (14) is arranged. 21. The apparatus of claim 18, 19 or 20, characterized in that the two at right angles to Conveying direction (2) running heat radiator and press bar pair units (3b) - based on the conveying direction (2) - in front of and / or behind the two parallel to each other at a distance to the conveying direction (2) extending heat radiator and press bar pair units (3a) are arranged. 22. The device according to claim 21, characterized in that one of the two at right angles to the conveying direction (2) extending heat radiator and press bar pair units (3b) tight in front of and the other close behind the two heat radiator press bar pair units running parallel to the conveyor belt (2) (3a) is arranged. 23. The device according to claim 21, characterized in that the two at right angles to the conveying direction (2) BATH ORIGINAL extending heat radiator press bar pair units (3b) tight next to each other at such a distance in front of or behind the two heat radiator press bar pair units running parallel to the conveying direction (2) (3a) are arranged, which is greater than the greatest edge length of an insulating glass pane, for which the device is designed. 24. The device according to claim 23, characterized. that the two are at right angles to the conveying direction (2) extending heat radiator press bar pair units (3b) rigid are connected to one another to form a higher-level unit. 25. Device for performing a method having the features according to one of claims 1 to 8 by which the insulating glass panes are passed through lying or standing on a conveyor, characterized in that four rod-shaped or tubular heat radiators (12c-f) are provided on both sides parallel to the conveying plane of the insulating glass panes (7), at least two of which are parallel to themselves in the The conveying plane is displaceable and which together form a square of variable size, and that a press (18), preferably a static press, is arranged behind the square in the conveying direction (2). - ίο - 26. The device according to claim 25, characterized in that at least three of the heat radiators (12d-f) in their longitudinal direction and two heat radiators (12e, f) can also be displaced transversely thereto parallel to the conveying plane and form a square by each heat radiator (12c- f) with its one end, which does not have any electrical connections, abuts the jacket of an adjacent heat radiator (12c-f). 27. A device for performing a method with the features of claim 2, through which insulating glass panes are guided lying or standing on a conveyor, characterized in that the static press is a surface press, in particular a platen press. 28. The device according to claim 27, characterized in that the static press (18) the heat radiators (12c-f) in Is downstream of the conveying direction (2). 29. Device according to one of claims 9-24, characterized . shows that in the juxtaposed pairs of heat radiators (12) and press bar pairs (14) combined to form a unit (3), these pairs cannot be displaced relative to one another. ORfQSN, 126996 30. Apparatus according to claim 29, characterized in that the units (3) consisting of heat radiators (12) and pair of press bars (14) parallel to themselves and parallel to the conveying plane Can be moved approximately by the center distance between the press bar (.14) and the heat radiator (12). 31. Device for performing a method having the features according to one of claims 1 to 8, through which the insulating glass panes are passed lying or standing on a conveyor, characterized in that four pairs of facing heat radiators (12a, 12b) are provided parallel to the conveyor plane, of which two pairs (12a) are parallel and two pairs (12b) at right angles to Conveying direction (2), at least one of the pairs (12a) parallel to the conveying direction (2) being displaceable parallel to itself in the conveying plane in order to adapt to different insulating glass pane dimensions, and that the heating zone formed from the heat radiators (12a, b) is followed by a continuous press (17). '32. Device according to claim 31, characterized in that . next to those running at right angles to the conveying direction (2) Heat radiators (12) to form pairs of press bars ORIGINAL BATHROOM also at right angles to the conveying direction (2) extending pressure bar (14) is arranged. 33. Apparatus according to claim 31, characterized in that the two at right angles to the conveying direction (2) running pairs (12b) individually synchronized with the insulating glass pane (7) can be moved in the conveying direction (2). 34. Device according to one of claims 9 - 31, characterized in that the pairs of heat radiators (12) arranged on both sides of the conveying plane are replaced by a respective heat radiator (12) located in the conveying plane, the radiation of which enters the edge joints (10) at the front. the insulating glass panes (7) is directed. ib. Device according to one of claims 9 to 34, marked through the use of infrared bright radiators (12) mirrored on the back. ■ 36. Device according to one of claims 9 to 35, qekennzeichn »through the use of double infrared bright radiators (12 with a U-shaped heating wire and one-sided electrical connection. BATH ORIGINAL 37. Device according to claim 3b or 36, characterized in that that the infrared bright radiator (12) is also preferably from one made of aluminum, roughly U- or C-shaped, until just before the edge area of the insulating glass panes reaching reflector (19) are surrounded.