Method and device for sealing insulated glass blanks

Abstract

Disclosed are a method and device for sealing insulated glass blanks, wherein the insulated glass blank is moved substantially continuously through a sealing station. When sections of the edge joint of the insulated glass blank that are oriented transverse or oblique to the conveying direction are filled with sealing mass exiting from a filling nozzle, the filling nozzle is likewise moved in the conveying direction. When sealing mass is introduced from the filling nozzle into sections of the insulated glass blank that are parallel to the conveying direction, the filling nozzle is not moved in the conveying direction or is moved in the conveying direction at a velocity V2 deviating from the velocity V1 at which the insulated glass blank is moved.

Claims

1. A method for sealing at least one insulating glass blank (1) comprising: using at least one filling nozzle (7) to introduce sealing compound into an edge joint of the insulating glass blank (1), whereby relative movements between the at least one filling nozzle (7) and the insulating glass blank (1) are created by moving the filling nozzle (7) and the insulating glass blank (1), wherein the insulating glass blank (1) is moved in a conveying direction (17) while the sealing compound is being introduced into the edge joint from the at least one filling nozzle (7), wherein, as sealing compound is being introduced into sections (11, 13) of the edge joint of the insulating glass blank (1) which are oriented parallel to the conveying direction (17), the at least one filling nozzle (7) is at a standstill in the conveying direction (17) or is moved at a speed V2 that is different from a speed V1 of movement of the insulating glass blank (1), wherein, as the sealing compound is being introduced into sections (3, 9) of the edge joint which are oriented transversely to the conveying direction (17), the at least one filling nozzle (7) is moved at the same speed V2 as the insulating glass blank (1) in the conveying direction and additionally transversely (42) to the conveying direction (17), and wherein while the insulating glass blank (1) is being sealed, the insulating glass blank (1) is moved continuously in the conveying direction.

2. The method according to claim 1, wherein as sealing compound is being introduced into sections of the edge joint which enclose an angle with respect to the conveying direction, the at least one filling nozzle (7) is moved transversely (42) to the conveying direction (17) in addition to moving parallel to the conveying direction (17).

3. The method according to claim 1, wherein the at least one filling nozzle (7) is a single filling nozzle (7) from which the sealing compound is introduced in succession into all sections (13, 9, 11, 3) of the edge joint of the insulating glass blank (1).

4. The method according to claim 1, wherein the at least one filling nozzle (7) is two filling nozzles (7) that introduce the sealing compound into the insulating glass blank (1).

5. The method according to claim 1, wherein the at least one filling nozzle during introduction of sealing compound into sections of the edge joint of the insulating glass blank, which are oriented parallel to the conveying direction, is stationary in the conveying direction.

6. The method according to claim 1, wherein the at least one filling nozzle during introduction of sealing compound into sections of the edge joint, oriented crosswise to the conveying direction, is moved at the same speed as the insulating glass blank in the conveying direction and in addition crosswise to the conveying direction.

7. The method according to claim 1, wherein the at least one filling nozzle, in addition to moving parallel to the conveying direction, is moved crosswise to the conveying direction when filling compound is being introduced into sections of the edge joint, which sections form an angle in the conveying direction.

8. A method for sealing at least one insulating glass blank (1) comprising: using at least one filling nozzle (7) to introduce sealing compound into an edge joint of the insulating glass blank (1), whereby relative movements between the at least one filling nozzle (7) and the insulating glass blank (1) are created by moving the filling nozzle (7) and the insulating glass blank (1), wherein the insulating glass blank (1) is moved in a conveying direction (17) while the sealing compound is being introduced into the edge joint from the at least one filling nozzle (7), wherein, as sealing compound is being introduced into sections (11, 13) of the edge joint of the insulating glass blank (1) which are oriented parallel to the conveying direction (17), the at least one filling nozzle (7) is at a standstill in the conveying direction (17) or is moved at a speed V2 that is different from a speed V1 of movement of the insulating glass blank (1), wherein, as the sealing compound is being introduced into sections (3, 9) of the edge joint which are oriented transversely to the conveying direction (17), the at least one filling nozzle (7) is moved at the same speed V2 as the insulating glass blank (1) in the conveying direction and additionally transversely (42) to the conveying direction (17), and wherein as sealing compound is being introduced into sections of the edge joint which enclose an angle with respect to the conveying direction, the at least one filling nozzle (7) is moved transversely (42) to the conveying direction (17) in addition to moving parallel to the conveying direction (17).

9. The method according to claim 8, wherein the at least one filling nozzle, in addition to moving parallel to the conveying direction, is moved crosswise to the conveying direction when filling compound is being introduced into sections of the edge joint, which sections form an angle in the conveying direction.

10. A device for sealing at least one insulating glass blank with application of the method according to claim 1, comprising: the at least one filling nozzle (7), from which the sealing compound is introduced into the edge joint of the insulating glass blank (1), and a conveyor (25) for moving the insulating glass blank (1) during the sealing, wherein the at least one filling nozzle (7) is movable parallel to the conveying direction (arrow 17) of the conveyor (25), wherein the at least one filling nozzle (7) is arranged on a sealing head (19) which is movable on a beam (5) transversely (42) to the conveying direction (17), wherein the beam (5) which carries the sealing head (19) is movable parallel to the conveying direction (17) of the insulating glass blank (1), and wherein the beam (5) is movable synchronously with the insulating glass blank in the conveying direction in order to introduce the sealing compound into sections (3, 9) of the edge joint which are oriented transversely to the conveying direction.

11. The device according to claim 10, wherein the conveyor (25) comprises a linear conveyor that clamps ono a lower edge of the insulating glass blank (1) and a roller beam (35) that is provided in the area of an upper edge of the insulating glass blank (1).

12. The device according to claim 11, wherein the linear conveyor comprises suction devices (27) and support elements (29), which can be moved together and synchronously in the conveying direction of the insulating glass blank (1).

13. The device according to claim 12, further comprising a machine frame (23), wherein the suction devices (27) laterally clamp onto the surface of one glass pane (33) of the insulating glass blank (1) that faces the machine frame (23), and wherein the support elements (29) clamp from below onto the glass pane (31) of the insulating glass blank (1) that faces away from the machine frame (23) of the device (15).

14. The device according to claim 12, wherein the support elements (29) have a support head (30) and a bendable support arm (51).

15. The device according to claim 12, wherein the suction devices (27) and the support elements (29) of the linear conveyor, combined into conveyor units (37), are arranged on a carrier (39).

16. The device according to claim 12, wherein the suction devices (27) and the support elements (29) are guided onto a continuous, self-contained conveyor track (55).

17. The device according to claim 10, wherein the at least one filling nozzle (7) is arranged on the sealing head (19), which can be adjusted on the beam (5) crosswise to the conveying direction, and wherein the beam (5), which carries the sealing head (19), can be moved parallel to the conveying direction of the insulating glass blank (1).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further details and features of the invention follow from the description below of preferred embodiments based on the drawings. Here:

(2) FIG. 1 diagrammatically shows steps during sealing of an insulating glass blank with a filling nozzle,

(3) FIG. 2 diagrammatically shows steps during sealing of an insulating glass blank with two filling nozzles,

(4) FIG. 3 shows a first embodiment in oblique view,

(5) FIG. 4 shows a front view of the device from FIG. 3,

(6) FIG. 5 shows a side view of the device from FIG. 3,

(7) FIG. 6 shows a top view of the device from FIG. 3,

(8) FIG. 7 shows a second embodiment in oblique view,

(9) FIG. 8 shows the second embodiment in front view,

(10) FIG. 9 shows the second embodiment in side view,

(11) FIG. 10 shows the second embodiment in top view,

(12) FIG. 11 shows in (partial) oblique view the embodiment, shown in FIGS. 7 to 10, with a modified configuration of the support elements, and

(13) FIG. 12 shows three support elements with an actuating link.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(14) The description below describes the sealing of insulating glass blanks, which are moved (transported) during sealing, as now commonly used, essentially oriented vertically through a sealing device (sealing station). Not withstanding the above, the method according to the invention is not limited to the sealing of insulating glass blanks that are oriented vertically during sealing. Rather, insulating glass blanks that are moved horizontally by a sealing device can also be sealed with the method according to the invention.

(15) In the method according to the invention, for example, the procedure can be as follows:

(16) First, the lower, horizontal section 13, parallel to the conveying direction, of the edge joint of the insulating glass blank 1 is filled, whereby the insulating glass blank 1 is moved continuously. The filling nozzle 7 can be moved parallel to the conveying direction (arrow 17) of the insulating glass blank 1 at a speed other than the speed of the insulating glass blank 1. In this case, the filling nozzle 7 may not be moved, however.

(17) Then, the rear (vertical) section 9 of the edge joint of the insulating glass blank 1, where said section is oriented crosswise to the conveying direction, relative to the conveying direction, is filled, whereby the beam 5 with the filling nozzle 7 (sealing nozzle) is moved synchronously with the insulating glass blank 1, and the filling nozzle 7 for filling the rear section 9 of the edge joint is moved downward or upward along the beam 5.

(18) When the upper, horizontal section 11 of the edge joint of the insulating glass blank 1 is being filled, the insulating glass blank 1 in addition is moved continuously in order to achieve a relative movement between filling nozzle 7 and insulating glass blank 1. The filling nozzle 7 can be moved parallel to the conveying direction (arrow 17) of the insulating glass blank 1 at a speed other than the speed of the insulating glass blank 1, but does not have to be moved.

(19) For filling the front (vertical) section 3 of the edge joint, oriented crosswise to the conveying direction, the procedure is as described in connection with the filling of the rear section 9 of the edge joint of the insulating glass blank 1.

(20) When filling sections of the edge joint, which are oriented parallel to the conveying direction (arrow 17) of the insulating glass blank 1, the filling nozzle 7 can be moved onto the sealing head 19, and the filling nozzle 7 shown in FIG. 2 can be stopped on the sealing head 21 (V.sub.2=0) or can be moved at a speed (V.sub.2), which is different from the speed (V.sub.1), at which the insulating glass blank 1 is moved (V.sub.2V.sub.1). This also applies for sections of the edge joint of the insulating glass blank 1, which are oriented obliquely to the conveying direction (arrow 17), whereby while oblique sections of the edge joint are being filled, the filling nozzle 7 is moved along the beam 5 so that it follows this section of the edge joint. Correspondingly, the procedure can be carried out while curved sections of the edge joint of an insulating glass blank are being filled.

(21) The movement of the sealing head 19 with the filling nozzle 7 (and also of the optionally provided second sealing head 21 with the filling nozzle 7) in conveying direction (arrow 17) is carried out by moving the beam 5.

(22) For example, when the sealing station 15 has (only) one filling nozzle 7 (FIG. 1), the procedure can be as follows:

(23) 1.sup.st Step:

(24) The insulating glass blank 1 is moved by a conveying system 25 at a speed V.sub.1 in the direction of the arrow 17 through the sealing station 15. In the case of, for example, a stationary beam 5 (V.sub.2=0) or with a beam 5 that is moved at a speed V.sub.2 other than speed V.sub.1, and in the case of a sealing head 19 that is stopped in the direction of the lengthwise extension of the beam 5 with the filling nozzle 7, the filling nozzle 7 fills the lower, horizontal section 13 of the edge joint of the insulating glass blank 1.

(25) 2.sup.nd Step:

(26) The insulating glass blank 1 moves forward at a speed V.sub.1 in the direction of the arrow 17 through the sealing station 15. At the same time, the beam 5 with the sealing head 19 moves synchronously with the insulating glass blank 1 at the speed V.sub.2 and in the same direction (arrow 17) as the latter, whereby V.sub.1=V.sub.2 applies. In this case, the sealing head 19 with the filling nozzle 7 travels along the rear, vertical section 9 of the edge joint upward (arrow 42) relative to the conveying direction (arrow 17) and fills the section 9.

(27) 3.sup.rd Step:

(28) The insulating glass blank 1 is moved forward in the direction of the arrow 17 at a speed V.sub.1.

(29) The beam 5 with the sealing head 19 is moved in the direction of the arrow 17 at a speed V.sub.2, which is different, in particular higher, than that of the insulating glass blank 1 (V.sub.2>V.sub.1), whereby the filling nozzle 7because of the difference in speeds V.sub.1 and V.sub.2 at which the insulating glass blank 1 and the beam 5 are movedmoves along the upper horizontal section 11 of the edge joint of the insulating glass blank 1 and fills the latter with sealing compound.

(30) When the upper section 11 of the edge joint of the insulating glass blank 1 is oriented obliquely to the conveying direction (arrow 17) or curved, the sealing head 19 with the filling nozzle 7 is moved in addition along the beam 5, so that the filling nozzle 7 follows the oblique or curved section 11 of the edge joint. In this case, the beam 5 can be moved in addition in (or against the) conveying direction (arrow 17) (in this case, V.sub.2V.sub.1 applies).

(31) 4.sup.th Step:

(32) The insulating glass blank 1 is moved forward in the sealing station 15 by the conveying system 25 and continuously at a speed V.sub.1 in the direction of the arrow 17.

(33) At the same time, the beam 5 with the sealing head 19 is moved with the filling nozzle 7 synchronously with the insulating glass blank 1 and at the speed V.sub.2 in the same direction (arrow 17), whereby V.sub.1=V.sub.2 applies. In this case, the sealing head 19 travels with the filling nozzle 7 along the beam 5 downward (arrow 42) and fills the front, vertical section 3 of the edge joint of the insulating glass blank 1 relative to the conveying direction (arrow 17).

(34) When a sealing station 15 with two filling nozzles 7 is used for sealing insulating glass blanks, the procedure can be as is described below relative to FIG. 2:

(35) 1.sup.st Step:

(36) An insulating glass blank 1 is moved by the conveying system 25 into the sealing station at a speed V.sub.1 in the direction of the arrow 17. At the same time, the beam 5 with two sealing heads 19 and 21 (the sealing head 21 can also be attached in the machine frame of the sealing station 15) with one filling nozzle 7 each is moved synchronously with the insulating glass blank 1 and in the same direction (arrow 17) as that at the speed V.sub.2, whereby V.sub.1=V.sub.2 applies. The sealing head 19 with its filling nozzle 7 travels along the beam 5 upward (arrow 42) and fills the front, vertical section 3 of the edge joint of the insulating glass blank 1, relative to the conveying direction (arrow 17), with sealing compound. The second sealing head 21 remains inactive in this step.

(37) 2.sup.nd Step:

(38) The insulating glass blank 1 is continuously moved forward in the direction of the arrow 17 at a speed V.sub.1. The beam 5 with the sealing head 19 and the sealing head 21 is stopped (V.sub.2=0) or is moved at a speed V.sub.2 other than speed V.sub.1 (V.sub.2V.sub.1); the filling nozzle 7 of the sealing head 19 fills the upper section 11 of the edge joint, and the filling nozzle 7 of the second sealing head 21 fills the lower section 13 of the edge joint of the insulating glass blank 1 with sealing compound.

(39) When the upper section 11 of the edge joint of the insulating glass blank 1 is oriented obliquely to the conveying direction (arrow 17) or is curved, the sealing head 19 with the filling nozzle 7 is moved along the beam 5 in such a way that the filling nozzle 7 of the edge joint also follows the oblique or curved section 11. In this case, the beam 5 can be moved in addition in (or against) the conveying direction (arrow 17) (in this case, V.sub.2V.sub.1 applies).

(40) 3.sup.rd Step:

(41) The insulating glass blank 1 is moved continuously at a speed V.sub.1 in the direction of the arrow 17. The beam 5 with the sealing heads 19 and 21 is moved at the speed V.sub.2 in the direction of the arrow 17 and synchronously with the insulating glass blank 1. In this case, V.sub.1=V.sub.2 applies.

(42) At the same time, the sealing head 19 with the filling nozzle 7, which last filled the upper section 11 of the edge joint, travels downward along the beam 5 (arrow 42) and fills the rear section 9, relative to the conveying direction (arrow 17), of the edge joint of the insulating glass blank 1 with sealing compound. In this step, the sealing head 21 is inactive.

(43) Both in the procedure according to FIG. 1 (one-nozzle sealing machine) and in the procedure according to FIG. 2 (two-nozzle sealing machine), the speed V.sub.1 at which the insulating glass blank 1 is moved through the sealing station 15 during sealing does not have to be the same in all sections (steps) of the method. It is only essential that the insulating glass blank 1except in the cases explained abovenot remain standing during the sealing, and the beam 5 with the at least one sealing head 19 is moved in (or against) the conveying direction, for example synchronously with the insulating glass blank 1, during sealing of sections of the edge joint oriented crosswise or at an oblique angle to the conveying direction, which sections start from the lower, horizontal section 13 of the edge joint, such as, for example, the sections 3 and 9 of the edge joint.

(44) The method according to the invention is also suitable for the sealing of so-called shape panes, i.e., insulating glass blanks 1 with shapes other than rectangular or square (with at least one oblique and/or curved edge), as has been further explained above with reference to the procedures shown in FIGS. 1 and 2.

(45) The exemplary embodiment of a device according to the invention (sealing station 15), shown in FIGS. 3 to 6, comprises a machine frame 23, in and on which the various system parts are arranged.

(46) In the machine frame 23, a conveying system 25 for insulating glass blanks 1 that are to be sealed is provided. The conveying system 25 comprises suction devices 27 and support elements 29 that are assigned to the suction devices 27. In this case, it is provided that the suction devices 27 clamp onto the rear surfaces, facing the machine frame 23, of one glass pane 33 of an insulating glass blank 1 and clamp the support elements 29 on the lower edge (only) of the front glass pane 31 of the insulating glass blank 1 facing away from the machine frame 23. Thus, a movement (dropping) of the front glass pane 31 relative to the rear glass pane 33 of the insulating glass blank 1, held by the suction devices 27, is prevented. In addition, parts of the conveying system 25 are prevented from coming into contact with and contaminating the sealing compound introduced into the edge joint of an insulating glass blank 1. Moreover, the device 15 is also suitable for sealing insulating glass blanks 1 for stepped elements (the glass panes of the insulating glass blank 1 are not the same size).

(47) The upper edge of the insulating glass blank 1 is supported by a roller beam 35, which clamps onto the rear surface of the glass pane 33 and is arranged such that it can be adjusted depending on height in the machine frame 23 so that it can be adjusted crosswise to the conveying direction (arrow 17) in such a way that it clamps onto the insulating glass blank 1 (only) in the area of the upper edge.

(48) The conveying system 25 of the first embodiment (FIGS. 3 to 6) comprises three conveying units 37 with five suction devices 27 in each case and support elements 29 assigned thereto, which elements are mounted on the same carrier 39, as the top view of FIG. 6 shows in particular. The height orientation of the support heads 30 of the support elements 29 can be adjusted correspondingly to the position of the lower edge of the front glass pane 31 of the insulating glass blank 1.

(49) The conveying units 37, comprising suction devices 27 and support elements 29, are moved in a circuit (arrow 40 in FIG. 6), in such a way that in each case only the currently required conveying unit 37 is moved in the conveying plane of the insulating glass blank 1. As soon as an insulating glass blank 1 has been sealed and removed, the conveying unit 37, as is shown on the right in FIG. 6, is moved back toward the rear and again to the intake side of the sealing station 15.

(50) The support elements 29 are designed in such a way that their support heads 30 can be dropped so that they do not prevent the filling (sealing) of the insulating glass blank 1 by the filling nozzle 7 when the lower, horizontal section 13 of the edge joint of an insulating glass blank 1 is sealed.

(51) For example, the support elements 29 are designed in such a way that their support heads 30 in the area of the filling nozzle 7 are dropped by an actuating element 49assigned to the sealing head 19 with filling nozzle 7into the position that is shown in the front view (FIG. 4). To this end, articulated levers 51 of the support elements 29, which lie in operating position with their support heads 30 on the lower edge of the front glass pane 31 of the insulating glass blank 1, are bent. In the active position, which the support elements 29 occupy when they are not in the area of a filling nozzle 7, the articulated levers 51 are extended. The articulated levers 51 are designed in such a way that they do not bend under the weight of the front glass pane 31 of the insulating glass blank 1, but rather only bend when force is exerted by the actuating element 49 in the area of the joint 53 of an articulated lever 51 on the latter.

(52) The sealing nozzle 7 is guided to move back and forth via a sealing head 19 on the essentially vertical beam 5 (arrow 42). The beam 5 itself can be moved along the machine frame 23 in the horizontal direction, i.e., parallel to the conveying direction (arrow 17).

(53) To this end, the beam 5 is mounted to be able to move with its lower end on a rail 43 that is arranged in front of the sealing station 15. In addition, the beam 5 is guided to be able to move over a cantilever 45 on a guide rail 47 that is fastened onto the upper edge of the machine frame 23.

(54) Since the beam 5, on which the sealing head 19 with its filling nozzle 7 is guided to be able to move back and forth (arrow 42), can be moved in the conveying direction (horizontal, double arrow 41), it can be entrained with the latter while sections of the edge joint of the insulating glass blank 1 are being sealed.

(55) This makes possible the procedure according to the invention in which the insulating-glass blank 1 during the sealing in the sealing station 15 does not remain standing, but rather is moved constantly. The relative movements between the sealing head 19 with filling nozzle 7 and the edge joint of the insulating glass blank 1 are achieved by moving the insulating glass blank 1 using the conveying system 25 and step-by-step (intermittent) movement of the filling nozzle 7 both crosswise to the conveying direction (double arrow 42) and in the horizontal direction (double arrow 41) in or against the conveying direction (arrow 17 of FIGS. 1 and 2).

(56) The embodiment of a device according to the invention (sealing station) 15, shown in FIGS. 7 to 10, operates in principle just like the embodiment that is shown in FIGS. 3 to 6. In the embodiment shown in FIGS. 7 to 10, the suction devices 27 and support elements 29 forming the conveying system 25 are run on a circular track 55 along a self-contained path (arrow 56 in FIG. 10). In the area of the front section 57 of the track 55 lying parallel to the conveying plane, the suction devices 27 and support elements 29 are effective for the transport of insulating glass blanks 1 during sealing. In the embodiments shown in FIGS. 7 to 10, one support element 29 is assigned to each suction device 27.

(57) In the embodiment of the sealing station 15 according to the invention, shown in FIG. 11, support elements 29 that are changed relative to the embodiment of the support elements 29, shown in FIGS. 7 to 10, are provided. The embodiment of the support elements 29 shown in FIGS. 11 and 12 can also be provided in the case of the embodiment of the sealing station 15 according to the invention, shown in FIGS. 3 to 6.

(58) The support elements 29 of FIGS. 11 and 12 have levers 61 mounted to pivot on a base plate 60, which levers carry the support head 30 to pivot on their free ends. Between the base plate 60 and the levers 61, an articulated lever 51 is provided with its joint 53 formed by an axis 62. An arm 64 is fastened to the axis 62 of the joint 53. Between the free end of the arm 64 and the base plate 60, a tension spring 65 is provided. The tension spring 65 loads the arm 64 in such a way that the articulated lever 51 is moved into operating position, shown in FIG. 12 on the right and left, with a raised support head 30 of the support element 29. This position of the articulated lever 51 is preferably a stable upper dead center position.

(59) In the embodiment of the support elements 29, shown in FIGS. 11 and 12, as an actuating element 49, an actuating link 66 is arranged on the sealing head 19. The actuating link 66 clamps onto an actuating roller 67, which is arranged on the axis 62 of the articulating lever 51, and produces a buckling of the articulated lever 51 in the position, shown in the center of FIG. 12, with a lowered support head 30 because of the relative movement between the sealing head 19 and the support element 29, symbolized by an arrow 68 in FIG. 12. As soon as the actuating link 66 no longer clamps onto a support element 29, more precisely its actuating roller 67when the support element 29 is thus no longer in the area of the filling nozzle 7 that is arranged on the sealing head 19 (or on the sealing head 21)the actuating lever 51 under the action of the tension spring 65 again occupies its operating position with a raised support head 30.

(60) On the release side, the conveying system 25 for insulating glass blanks 1 that are to be sealed in the embodiment shown in FIGS. 3 to 6 can, just like the embodiment shown in FIGS. 7 to 10 (on the right in FIG. 3 and in FIG. 7), be extended enough to convey sealed insulating glass blanks 1 far enough away from the sealing station 15 that insulating glass blanks 1, which have been sealed, can be easily removed for stacking.

(61) In summary, an embodiment of the invention can be described as follows:

(62) During sealing of insulating glass blanks 1, the insulating glass blank 1 is moved essentially continuously through a sealing station 15. When sections 3, 9 of the edge joint of the insulating glass blank 1 that are oriented crosswise or obliquely to the conveying direction (arrow 17) are filled with sealing compound that exits from a filling nozzle 7, the filling nozzle 7 is also moved in the conveying direction (arrow 17). When sealing compound from the filling nozzle 7 is introduced into the sections 11, 13 of the insulating glass blank 1 parallel to the conveying direction (arrow 17), the filling nozzle 7 is not moved in the conveying direction (arrow 17) or is moved at a speed other than the speed at which the insulating glass blank 1 is moved.