DK151278B - METHOD AND APPARATUS FOR MANUFACTURING GAS FILLED INSULATION WINDOWS - Google Patents

Abstract

1. Method of making multiple panes filled with gas, comprising at least two glass sheets (18, 19) connected at their periphery by spacing frame (20) thus defining a space between them, characterised in that a gas other than air is introduced into the space defined by the glass sheets during assembly of the pane, before obturation of the space between the glass sheets.

Description

in 151278

The invention relates to a method of producing gas-filled insulating glass panes of at least two panes of glass connected to one another by a spacer frame.

5 Gas filler insulating glass units are prepared in such a way that, after completion of the insulating glass unit, holes are drilled in the spacer frame or a spacer frame with appropriate apertures is used beforehand, after which the gap between the glass panes after completion of the insulating glass unit is filled with gas in an additional working step. , after which the openings in the distance frame are closed. At least two bores must be placed in the spacer frame, namely one bore for the gas inlet and one bore for discharge for the air to be displaced. The filling of the gas in the already completed insulating glass unit and the subsequent sealing of the openings in the spacer frame are cumbersome and time consuming. Therefore, this process is relatively complicated in series production of large scale gas-filled insulating glass units.

The invention is intended to provide a process for the production of gas-filled insulating glass units and apparatus for carrying out the invention, in which the filling of gas is carried out faster than before, and in which larger quantities of insulating glass units can be completed in a shorter time in substantially continuous production. .

This is achieved by the method according to the invention by introducing the gas or gas mixture during the assembly and before the gas-tight closure of the insulating glass unit in one working step.

The parts of the insulating glass unit to be mounted are transported on a conveyor belt, e.g. consisting of juxtaposed abutment rollers, into a mounting station which can be filled with gas or gas mixture and pressed against each other here during gas containment. This is preferably carried out such that a glass pane is transported into the mounting station past an inclined support or transport wall. At the mounting station, the pane is then taken over by a suppressed plate, whereby the glass pane is held against this plate by suction. This suction plate is preferably shaped box-like and has openings on the inner wall by means of which the pane carried into the mounting station is sucked against the inner wall when the suction plate is pressed against the pane.

After the suction plate has taken over the pane, it is moved perpendicular to the transport plane to enable the second part of the insulating glass unit to be inserted into the mounting station. The second part of the insulating glass unit preferably consists of a pre-made unit consisting of a glass pane on which the spacer frame is adhered. Also, the other side 20 of the spacer frame facing the first glass pane located on the suction plate is provided with an adhesive, preferably with butyl rubber.

When the second part of the insulating glass unit is in the mounting station opposite the first pane, gas is displaced during gas displacement or a gas mixture into the gap between the two plates in the mounting station. The mounting station is preferably designed as a press, and thus can compress the two parts of the insulating glass unit under gas tight - ·. 30 containment of the insulating gas.

The gas can be blown in continuously or incrementally in the press, and either from above downwards or. from below rising upwards. With the continuous gas supply, the press forms a closed unit on all sides to make the gas losses as small as possible.

3 151278

The pressing of the pane in the press is preferably done by pressing the pane fixed on the suction plate to the adhesive spaced frame frame. At the end of the pressing operation, the press is reopened and the gas-filled insulating glass unit thus produced is transported out of the press.

The invention also relates to an apparatus for carrying out the method of manufacturing insulating glass units.

The apparatus consists of a press having two substantially vertical, box-shaped plates arranged relative to each other, between which the parts of the insulating glass units to be connected can be inserted, means for filling the gap with gas or a gas mixture and means for discharging and / or introducing into the excess gas circuit.

The invention will be explained in more detail below with reference to the drawing, in which: FIG. 1 shows an apparatus according to the invention for carrying out the method according to the invention with a stepwise operating gas filling station; FIG. 2 is a section through the apparatus of FIG. 1 along line II-II, FIG. 3 is a side view of the apparatus of FIG. 1 in simplified view with glass pane inserted; FIG. 4 is a side view of the apparatus of FIG. 1 in the closed position; FIG. 5 is a side view of the apparatus of FIG. 1 30 after taking over the glass pane first introduced in the press, fig. 6 is a side view of the apparatus of FIG. 1 with the glass pane inserted in the press and the second part of the insulating glass unit; FIG. 7 is a side view of the apparatus of FIG. 1 during the gas filling operation; 8 is a side view of the apparatus of FIG. 1 during the pressing operation; FIG. 9 is a side view of the apparatus of FIG. 1 after transporting the finished insulating glass unit, fig. 10 shows the gas-filled insulating glass unit removed from the press; FIG. 11 shows another apparatus according to the invention for carrying out the method; FIG. 12 is a cross-section through the apparatus of FIG.

11 along section line XII-XII, FIG. 13-19 is a side view of the apparatus of FIG.

Fig. 15 11 in simplified view during the recording of parts of the insulating glass unit, the gas filling operation, the pressing operation (Fig. 18) and after the removal of the gas-filled insulating glass unit from the press; 20 shows a further apparatus according to the invention with a continuously operating gas filling station; and FIG. 21 is a section through the apparatus of FIG. 20 along line XXI-XXI.

FIG. 1 shows a plant or apparatus for producing insulating glass units in a step-controlled process with a press, which is designated in its entirety by 1. The press consists of a sloping, box-shaped plate 2 and a plate 3 opposite to it which is tilted. The plates 2 and 3 are connected to each other by means of a pivot hinge 4 shown in dotted line in FIG. 2. The plates 2 and 3 are furthermore in contact with each other over at least one pressure cylinder 5, by means of which the two plates can be pressed against each other. If desired, the movable plate 3 can be further displaced laterally on a guide 70 in the bracket 71 at an additional pressure cylinder 6 to increase the distance between the plates 2 and 3.

The plate 2 of the press is box-shaped with a cavity 74 and supports 76 and is provided at the rear 5 with an inlet nozzle 7 for supply of compressed air. The supply of compressed air is indicated by an arrow 72 (see Fig. 2). The front working wall 8 arranged against the rear wall 73 has openings 9 for passage for compressed air in the gap 10. In pressurized air 10, the air exiting through the openings 9 forms an air cushion behind the window 19 (18) which rests on the front working wall. 8 of plate 2. _

The substantially vertical plate 3 of the press 1 in the starting position of the press 1 is also preferably box-shaped, so that a cavity 12 with supports 75 is also formed within the plate 3. The plate 3 is provided with an outlet nozzle 13 which connects the cavity 12 in the plate 3 with a suction fan 14. The front working wall 15 of the box-shaped plate 3 is provided with suction openings 16. The suction openings 16 serve to take the glass pane 18 from its original transport position and hold it in this position.

The openings 9 of the preferably box-shaped plate 2 serve to form an air cushion between the glass pane 18 or 19 and the front working wall 8, to allow sliding of the glass pane 18 or 19 or the finished insulating glass unit by supply 30 and away transport. A spacer 20 is adhered to the glass pane 19 by means of an ordinary adhesive. The spacer frame 20 is preferably formed as a frame of hollow profiles.

6 151278

Above the gap 10 In the press 1, there is a gas filling beam 22 arranged to be displaced into the gap 10. The gas filling beam 22 is preferably somewhat narrower than the total width of the insulating glass unit to be manufactured so that the press 1 can also be closed. when the gas filler bar is in the slot 10 in the press 1. The gas filler bar 22 has on its underside outlet openings 23 from which the gas 10 or gas mixture supplied to the gas filler bar on the opposite side over the supply lines 24 can exit. The gas filling beam 22 is divided by a number of chambers 55 into a plurality of chambers 47 'to 47 ,,,,,. At a feran press, the long gauge measuring device (sensor 25} is measured by inserting a glass pane 18 and 15 into the press the length of this glass pane, and correspondingly gas is supplied to as many of the chambers 47 as in each case. In this way, 20 any gas losses are reduced to a minimum.

The gas filler bar 22 is fitted over the outlet openings 23 down sealing lips 25 and 26, which seal the gap 10 of the press gap. The sealing lip 25 is located at the bottom of a side wall of the gas filler beam facing the plate 2.

The sealing lip 25 simultaneously serves soot glicet protection for the gas filler beam on the surface of the front working wall S of plates 2. The sealing lip 26 is connected resiliently forward on the side wall of the gas filler beam 22 facing the plate 3, the end of the sealing lip abutting. front working wall 15 of the plate 3. Upon closing the press, the gut lip 26, which preferably consists of mold-stable plastic, extends an elastic outer region, displaced upwardly so that a proper closure of the press is ensured. The gas filling bar 22 is connected to a gas supply source 27 (Fig. 7) over pipelines 24. The gas filler bar 22 may be provided with the suctioned excess gas in circulation principle with additional gas mixing [or additional gas. However, the gas source can also supply the gas directly, without circuits to the chambers 47 'to 47' The gas filling beam 22 is displaced in its vertical direction over a lifting device 10 connected at the sides at the end of the gas filling beam 22. The lifting device is designated in its entirety by 11. the embodiment of FIG. 1, the lifting device 11 is e.g. designed as a chain drive.

15 Below the plates 2 and 3 of the press 1 is a suction box 28 which seals the gap 10 in the press downwards. The suction box 28 consists of a bottom plate 29, over which there is a cover plate 31 provided with slots 30. The suction box 28 is connected through a pipe 20 conduit 32 to a suction fan 33, which sucks the excess gas away from the suction box 28 from the slot 10 in the press 1. The side walls of the suction box 28 are sealed with respect to plates 2 and 3, the seal 34 between the suction box 28 and 25 plate 3 being flexibly formed as the plate 3 is displaced in the direction of the plate 2 by closing the press.

In FIG. 1-9, an embodiment of the method according to the invention is illustrated. A transport and support plate 36 is placed in front of the press 1 which is slightly inclined. The inclination of the conveyor and support plate corresponds to the inclination of the plate 2 in the press 1. The conveyor and support plate 36 is preferably formed as a box whose cavity 37 is connected through a conduit 38 to a blower 39 for supplying compressed air. The compressed air avoids the openings 41 of the gene in the front working wall 40, facing the glass pane 18 and 19. Hereby, between the glass pane 18, 19 and the front working wall 40, an air cushion is formed which allows sliding 5 of the glass pane 18, .19 against the scaffolding wall. .

The fan 35 preferably serves through supply tube 69 preferably at the same time as the source of compressed air for the plate 2 of the press 1.

The support plates 36 or 42 in front of and behind the press 1 may, instead of an air cushion, also be provided with ordinary sliding rollers 60, as shown in FIG. 1 vec the support plate 42. Also away and the support wall 42 are disposed inclined, which inclination corresponds to the inclination of the plate 2 in the press 1.

Below the support and conveyor plates 36, 2, 42, there x height of the bottom plates of these devices are tubular and conveyor rollers 43. The support rollers 43 extend over the front working wall of the support wall 36, the plate 2 or the support wall 42. The support rollers 43 are placed so close together that the insulating glass unit or insulating glass unit parts can be transported on these driven rollers. The support rollers 43 on the transport and support plates 25 are each mounted in a drive bearing 44 located on the bottom plate of the no transport and support plate. At one upper end of the plate 3 there are, at the height of the plate, snow elements 45 as the lower substrate for the pane 18. The supporting elements are arranged in such a way that, by a joining of the plates 2 and 3, they will lie between supports. rollers,.

In FIG. 3-5, the individual process steps for manufacturing the insulating glass unit are shown. FIG. Fig. 25 shows the press from the side with a glass pane 18 supported on the inclined plate 2, which has been transported from the front into the press for a stop. At the lower end of the plate 2, the pane 18 is supported and transported on support rollers 43. FIG. 4 shows the apparatus in the closed state. The closing of the press 1 is effected by passing the plate 3; against the glass pane 18. After the press is thus closed, the plate 3 is fed with vacuum, whereby the pane 18 is sucked against the front working wall of the plate 3. After the glass pane 18 is sucked against the plate 3, it is pivoted away from the plate 2 by the hinge 4 (Fig. 5) forming the slot 10. Thereafter, the glass pane 19 with the spaced-apart frame 20 is then transported into the press on the transport and support wall 36 placed in front of the press to the stop (not inclined) and the gas filling beam 22 is lowered (fig. 6). The end faces of the spacer frame 20 are coated with an adhesive 21. Particularly suitable is a butyl rubber adhesive having particularly good adhesive properties.

20 As soon as the glass pane 19 is at the stop in the press 1 and thereby lies exactly opposite the glass pane 18, the transport system is stopped and the supply of gas or gas mixture 46 is switched on through the gas filling beam. The gas or gas mixture 46 preferably consists of a gas having very high insulating properties, e.g. inert gases such as helium, neon or argon, carbon dioxide, nitrogen, carbon fluorine compounds such as Freon, etc. The excess gas is suctioned through the suction box 30 28 of the suction box 28 and returned via the blower 33 and the conduit 24 to the gas filler bar 22 if desired. On the inlet and outlet side, the slot 10 may optionally be sealed by overlapping rubber lips or the like (not shown in the drawing). As soon as the slot 10 in the press 1 is filled with gas 46 (Fig. 7), the plate 3 with the pane 18 is guided against the spacer frame 20 and the insulating glass unit is compressed (Pj Fig. 8) so that the glass panes 18 and 19 are pressed. against the spacer 21 coated with 5 adhesive 21, at the same time sealing the cavity filled with gas 46 between the glass panes 18 and 19. After the insulating glass unit is compressed gas tight, the press is opened again by removing the plate 3 and the insulating glass unit 10 is transported out of the slot 10 in the press (Fig. 9).

During the compression (cylinders 5 and 6) of the insulating glass unit, the supply of compressed air to the plate 2 is interrupted by a valve 77. When the glass pane 18 is pressed against the spacer frame 20, the underpressure of the plate 3 can also be interrupted by the valve 78 (fig. 8).

In FIG. 11 and 12 there is shown an embodiment of the apparatus -for the manufacture of gas-filled insulating glass units, in which the plate 3 does not make any tilting movement, but is only displaced in parallel with the plate 2 on guide 70. The angle of inclination of plate 3 corresponds to the angle of inclination of plate 2 in the press. 1. The upper edge regions 70 of the suction box 28 are preferably formed such that they form an inclined plane which serves as the supporting surface 70 for the plates 2 and 3. The plate 3 is displaced in the direction towards the plate 2 or away from the plate 2 by means of at least one pressure cylinder 6 located at both ends of the plate 3 when the press 30 1 is to be opened.The pressure cylinder £. is connected, on the one hand, to the outer wall 79 of the plate 3 and, on the other hand, to the stand of the apparatus through a bend 80. on the suction box 28. The pressure cylinder 6 is preferably pneumatically controlled. The advantage of the apparatus of FIG. 12 lies in the gap 10 between the plate 2 11 151278 and 3 being smaller and therefore less gas losses occur when filling the insulating glass unit, since the gas volume in the open press is smaller.

In FIG. 13-19 is the manufacture of an insulating glass unit with the apparatus of FIG. 11 and 12 shown. FIG. 13 is a side view of the press 1 of FIG. 11 with glass pane 18. In FIG.

14, the press is closed, and in the plate 3, which is also preferably box-like, there is a unit pressure, by means of which the pane 18 is sucked against the plate 3. Upon opening (compare Fig. 15) of the press, the glass pane 18 is held at suction action against plate 3 and rests at the bottom of the support members 45.

After opening the press, the second glass pane 15 19 (Fig. 15) is inserted, and then the gas filler bar 22 is lowered into the gap 10 (Fig. 16) of the press to the upper edge of the pane 19, where a seal is made by means of a seal. the gasket 25. On the glass pane 19, again, a spacer frame 20 is adhered by means of an adhesive layer 21. As soon as the glass pane 19 faces the glass pane 18, the compressed air injected into the plate 2 is interrupted and the supply of gas 46 through the gas filling beam 22 is switched on. Next, the plate 3 with the glass pane 18 fixed on the surface of the front working wall 15 is pressed against the spacer frame 20 with the cylinders 5 and 6 (p Fig. 18). By compressing the glass panes via the spacer 20, the cavity between the glass panes 18 and 19 is sealed gas tight. After the end of the press operation, the press is opened again and the finished insulating glass unit is removed from the glass press (Fig. 19). During opening of the press 1, the gas filling beam 22 is moved upwardly out of the slot 10 in the press. Also with this apparatus, the excess gas 46 absorbed through the conduit 32 can be returned through a suction blower 81 and the conduit 24 to the gas filler bar 22. The gas filler bar 22 is shown here with only one chamber (47) with a supply hose 24. here, however, it is also possible to use a multi-chamber embodiment 5 e.g. 47 'to 47.

FIG. 20 and 21 show a further embodiment of the apparatus for producing gas-filled insulating units. In this case, the press 1 is enclosed by a housing 48; in the upper cover plate 49 of the housing, the gas filler beam 50 is preferably inserted stationary. However, the gas filling beam 50 may also be passed through the cover plate 49, the opening for passing the gas filling beam e.g. can be sealed by means of a rubber cuff. The gas filling beam 50 is connected to the gas source 27. via a pipeline 51 and a pipeline 52 as well as a valve 53. The pipeline 51 is in the apparatus of FIG. 20 and 21 through a valve 54 and the supply device 33 connected 20 to the pipe 32 for suction of excess gas from the suction box 28. In this way, the excess insulating gas 46 suctioned in the suction box 28 is returned to the gas filling beam 50. The gas filling beam 50 consists of this appliance. 25 is preferably a one-piece gas bar from whose apertures 23, preferably continuously flowing gas from the underside towards the gap 10 between the plates 2 and 3 in the press. In this way, a gas-30 veil is formed between the plates 2 and 3. Here, too, the plate 3 in the press 1 is provided with vacuum. The plate 2, on the other hand, is supplied through the pipe nozzle 7 as well with the overpressurized filling gas to form a gas pad between the glass pane 18 and the plate 2. This gas pad 35 has the same function as the air pad in the devices described above.

13 151278

The end faces of the press 1 are here sealed with vertical wall portions, the front side wall being formed by a horizontally or vertically displaceable flap 55. The flap 55 may also consist of several movable portions. The end wall disposed at the exit of housing 48 preferably has elastic lips 56 that overlap at their bump edges in the middle. The lips 56 are therefore elastically formed so that the finished insulating glass unit can leave the press or the gas lock without having a special opening mechanism for opening this side restriction of the housing 48.

The gas lock, which is sealed in the sides by means of the slider 55 and the elastic lobes 56, 15 preferably has a front lock 57 connected therewith with an access slider 58, in which lock 57 the transport and support plate 36 is arranged, which plate together with abutment rollers 43 serves to supply the parts of the insulating glass unit. In front of 20 or inside the support plate 36 there are sensors 62 which sense the glass panes 18 and 19. conveyed on the support plate 36. The sensor 62 serves to control the opening and closing mechanism of the slider 55 in the main lock 58 or the lock 57.

The seal 57 serves to degrade the gas losses that occur when the flap 55 of the housing 48 is opened during the transport of the insulating glass unit parts 18 and 19 into the press 1. In the flow direction behind the housing 48, there is a transport and support wall 42, which serves to transport the finished insulating glass unit. Behind the housing 48, a discharge lock is not necessary, since the compressed insulating glass unit no longer has adhesive surfaces and therefore can be transported through the sealing lips 35 56. The design of the transport and support wall 42 151278 14.

preferably corresponds to the embodiment of the corresponding support wall in FIG. First

The FIG. 1, 11 and 20, the flow direction of the gas or gas mixture from top to bottom can also be reversed as needed. This is particularly advantageous when a gas heavier than air is used to fill the insulating glass unit. In this case, the smaller density air is compressed completely out of the press or sluice by means of the insulating gas of the larger density.

The process of the invention has the additional advantage that insulating glass units of different dimensions can be filled with insulating gas without the need to change the process.

Claims (16)

151278 A method of producing gas-filled insulating glass units of at least two glass panes connected along the peripheral regions to a spacer frame to form a gap, characterized in that the gas is introduced during mounting or assembly of the glass panes to be gas-tightly interconnected. , in the spaces between these formed. Method according to claim 1, characterized in that the gas-tight closure of the glass panes (18, 19) with the spacer frame (20) is applied to press the panes against the spacer-shaped spacer frame in a gas or gas mixture. atmosphere. Method according to claim 1 or 2, characterized in that the gas-tight closure of the insulating glass unit is carried out by pressing a glass pane (18) against a prefabricated unit consisting of a glass pane (19) with a spaced 20 frame (20) adhered thereto in a isoleringsgasatmosfære. Method according to claim 1, 2 or 3, characterized in that excess gas is sucked away from the mounting area and returned to the circuit. Apparatus for carrying out the method according to any one of claims 1-4, characterized in that the apparatus comprises a press (1) with tp plates (2, 3) arranged to move against each other and as the glass frame of the insulating glass unit. there and, spacer frame (20) is arranged to be inserted between, and there are means for introducing gas or a gas mixture into the press (1) and means for discharging and / or introducing into the circuit of the gas or gas mixture. 151278 Apparatus according to claim 5, characterized in that the individual insulating glass panes are arranged to be inserted from the end into the slot (10). Apparatus according to claim 5 or 6, characterized in that the means for introducing a gas or a gas mixture into the press consists of a gas filling beam (22, 50) arranged to be connected to a gas source (27). Apparatus according to claim 7, characterized in that the gas filling beam is displaceable in the vertical direction in the opened press and on the underside has gas outlet openings (23). Apparatus according to claims 7 or 8, characterized in that the gas filling beam is divided into several chambers (47 ', 47 ") connected by separate pipes (24). Apparatus according to claim 9, characterized in that before the press (1) there is a length measuring means (sensor 35), by means of which a number of chambers (47) corresponding to the length of the glass panes in the gas filling beam (22) is provided with gas. Apparatus according to any one of claims 7-10, characterized in that on the gas filling bar (22) above the gas outlet openings (23) there is on one side a resiliently mounted sealing lip (26) covering the gap (10) in the press. (1) upwards during the gas filling operation. Apparatus according to any one of claims 7-11, 30, characterized in that the gas filling beam (22) is narrower than the insulating glass unit to be completed. Apparatus according to any one of claims 5-12, characterized in that the press (1) under the two plates (2, 3) is sealed with a vent box (28), which is adapted to be connected through suction pipes (32). with at least one suction fan (33). Apparatus according to any one of claims 5-13, characterized in that the press (1) for avoiding gas losses is sealed above, below and at the sides of the two plates (2, 3). Apparatus according to claim 14, characterized in that the press (1) is sealed on the access side with a flap (55) consisting of one or more parts and / or on the away transport side with a seal in the form of overlapping elastic lips ( 56). Apparatus according to claim 15, characterized in that the opening and closing mechanism of the slider flap (55) on the access side is controllable by means of a sensor (62) arranged before the slider flap (55) and which senses it. bit by bit.