ES2602125T3 - Procedure and machining device of a plastic band during the manufacture of a frame-shaped spacer for insulated glass windows - Google Patents

Abstract

Procedure for machining a plastic band (4a) containing a drying agent during the manufacture of a frame-shaped spacer (4) for an insulating glass moon (1) having an inner side (5), an outer side (6) and two flanks (7) that must adhere, on the insulating glass moon (1), to two glass plates (2, 3) of said insulating glass moon (1), adhering a film that It serves as a barrier against the side of the band (4a) that forms the outer side (6) of the spacer (4) and is then called the outer side (6) of the band (4a), with the following steps: the band , on its side that is away from the outer side (6) and then referred to as its inner side (5), is provided with a notch (14) in at least one site provided to form a corner of the spacer (4) so from Marco; a length of said band (4a) adapted to the perimeter of the insulating glass moon (1) is cut and separated from a reserve of the band, characterized in that when cutting the band (4a) a cutting edge (28) is moved ; 29) through the film in a direction such that the force exerted by the edge (28; 29) on the film is directed from the outer side (6) of the band (4a), obliquely to said outer side (6 ) of said band (4a), in the direction of its inner side (5) and the edge (28; 29) produces a cut that propagates on the outer side (6) of the band (4a) at right angles to its direction longitudinal (13).

Description

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DESCRIPTION

Procedure and mechanization device of a plastic band during the manufacture of a frame-shaped spacer for insulating glass windows.

The invention concerns a process of mechanization of a plastic band in the course of the manufacture of a frame-shaped spacer for an insulating glass moon according to the preamble of claim 1 and a cutting device for performing the procedure according to the preamble of claim 6.

A method according to the preamble of claim 1 and a device according to the preamble of claim 6 for machining a band of this class are known from EP 1 839 789 B1. This rectangular cross section band, which can be obtained completely prefabricated and processed as it comes from the roll, is known under the trade name SUPERSPACER. The narrow flanks of the plastic band are glued to the glass plates of the insulating glass moon, specifically in the direction parallel to the edge of the glass plates. When the band is glued to the glass plates, an open edge joint is produced which is limited by the two glass plates and the outer side of the spacer and is filled with a paste mass and subsequently hardenable. The web contains a drying agent consisting of a moisture fixing material, for example based on zeolite, and which absorbs moisture from the air of the interior space of the insulating glass moon sealed by the spacer and the adjacent sealing mass and prevents a breach of the insulating glass moon from the inside.

On the outer side of the spacer, which is formed by an outer side of the band, a film that acts as a anti-vapor barrier is mounted. The film consists of plastics that are very impermeable to water vapor and can contain one or several layers. The film that acts as an anti-vapor barrier prevents moisture from entering the ambient air in the insulating glass moon. It is necessary for this that the film does not allow water vapor to pass for a very long period of time of more than 10 years so that the insulated glass moon installed in a building does not fill as far as possible from the inside during its entire useful life.

At the corners of a rectangular insulated glass moon the band, if possible, should be angled at right angles. To make this possible, it is described in EP 1 839 789 B1 the resource of stamping a miter on one of the wide sides of the band that is later turned towards the interior space of the insulating glass moon, whereby Remove material that is a hindrance to a corner at right angles to the frame-shaped spacer. The cutting surfaces of the cuneiform notch of the band produced by the die are applied to each other after forming the corner.

In insulated glass moons that have one or several corners in acute angle and / or in obtuse angle, the so-called model moons, the band is provided with a cuneiform notch whose cradle angle deviates from 90 ° and corresponds to the corner angle of The moon model. In this way, the cutting surfaces of the notch are applied again to each other after the corner formation.

The cutting device of EP 1 839 789 B1 has a grating device that receives the band in a movable direction in its longitudinal direction and that has a longitudinal direction in which said equipment grinds the band when moving in the longitudinal direction. The grinding device contains a grinding surface for the outer side of the band and a grinding surface arranged at right angles with this for one of the flanks of the band. A notching tool is provided with two edges that are movable in a straight line and which, considered in the direction of travel, are arranged in a V-shape to punch the cradle-shaped band. The direction of travel of the notching tool is perpendicular to the longitudinal direction. The direction of displacement of the notching tool and the longitudinal direction of the band are parallel to the plane of the grating device. The angle between the two V-shaped edges is adjustable, so that the angle of the tip of the cuneiform notch can be adapted to the corner angle of the insulating glass moon.

After punching the notches for the corner areas of the insulating glass moon the band is also cut to a length adapted to the penimeter of the insulating glass moon with a movable sectioning tool that is certainly not described in EP 1 839 789 B1, but which, nevertheless, is known. The sectioning tool has a cutting edge and is moved with a linear angle at right angles to the longitudinal direction. The direction of travel of the sectioning tool is parallel to the direction of movement of the notching tool and the edge is arranged at right angles to the direction of movement of the sectioning tool.

When cutting the band to measure, the sectioning tool has to section, in addition, entirely also the film adhered on the outer side of the band. It has been found that the known sectioning tool is perfectly suitable for sectioning the known bands with the known plastic films of one or more layers.

An even more improved vapor tightness of insulating glass moons can be achieved with a distance band that is provided, on its outer side, with a metal film, especially a thin steel

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stainless. Due to the metal film acting as an anti-vapor barrier, a very high vapor tightness can be achieved for a very long period of time.

The invention is based on the problem of creating a method and a device with which, in the course of the manufacture of an insulating glass moon, even better distance bands can be machined that are provided with a film on its outer side.

The problem is solved with a method according to claim 1 and a cutting device according to claim 6.

According to the invention, it is provided that the sectioning tool has one or more edges that, when cutting the band, move in a certain direction through the films. This has the advantage that the method and the device according to the invention are especially suitable for the mechanization of distance bands to whose outer side a metal film adheres.

During the cutting operation, each of the at least one edge is moved through the film in a direction in which the cutting force exerted by the edge is directed from the outer side of the band, obliquely to said outer side of said band, in the direction of its inner side, whereby the cutting edge produces a cut that propagates parallel to the outer side. In the cutting device the sectioning tool is movable with the displacement equipment during the cutting operation such that each of the at least one edge is oriented obliquely to the support plane and the cutting force exerted by the edge is directed from the outer side of the band obliquely to its inner side.

This has the advantage that a burr produced during the cutting of the film is directed towards the inner side of the band. A burr is produced especially when a band is completely sectioned that has on its outer side a metal film that serves as a barrier against damping. By means of the defined movement of the edge it is prevented that a burr is produced in the band that is directed towards the outer side of the band, that is to say that it protrudes from the outer contour of the band, and that can hinder the application of the distance band on glass plate An outward-oriented burr can lead to the band being hooked during further transport in the machine.

It is advantageous that the band is cut at the same time with two edges that are arranged at an angle to each other and that form a common point. The tip moves from a site placed in the central area of the outer side of the band in such a direction through the film that the forces exerted on the film by the two edges are directed from the outer side of the band, obliquely to said outer side of said band, in the direction of its inner side and produce cuts that propagate in mutually opposite directions on the outer side of the band at a right angle with its longitudinal direction. This embodiment has the advantage that the band or the film disposed on the band is cut at the same time with the two edges such that the components of the cutting forces directed parallel to the outer side compensate each other. An especially good cut can be achieved, particularly in bands with metal film.

In an advantageous embodiment of the invention, each of the at least one edge moves during the cutting operation perpendicularly to the outer side through the film. Preferably, the outer side of the band is placed on the gma surface of the gma equipment and each of the at least one edge can be moved through the support plane by means of the displacement equipment from the side away from the gma surface. To this end, the displacement equipment may contain a tilting arm or a linear gma in which the sectioning tool is fixed. Preferably, it is provided that the direction of travel of the sectioning tool runs at right angles to the direction of travel of the notching tool and that each of the at least one edge of the sectioning tool runs obliquely to the direction of movement of the tool disconnector Preferably, the sectioning tool has at least two edges that run with different obliqueness with respect to the direction of travel of the sectioning tool, the edges with their ends forming a cuneiform tip that looks in the direction of movement of the sectioning tool.

In another advantageous embodiment, it can be provided that the band is first provided with a notch for a corner area of the insulating glass moon and then be sectioned entirely in the center of the notch. The notching tool, considered in its direction of travel, preferably has two V-shaped edges for notching the cradle band. Preferably, the tip formed by the two V-shaped edges is located in the sectional plane of the sectioning tool. It can be achieved so that the splice site of the band is located exactly in a corner of the frame-shaped spacer. In another advantageous embodiment, it may be provided that the band is provided with a cuneiform notch having a point angle that is smaller than the corner angle of the insulating glass moon in that corner area where the principle is joined and The end of the band with each other. With this, a cuneiform slit that widens from the inner side of the spacer to its outer side is obtained at the junction site of the frame-shaped spacer between the cutting surfaces at the beginning and end of the band. The beginning and end of the band are touched on the inner side of the frame-shaped spacer, so

That corner seems very clean from the inside. From the outside, the slit can be filled very well due to its cradle shape with a paste mass and subsequently hardenable.

Other advantages and features of the invention are apparent from the dependent claims and the following description of an exemplary embodiment. The description, claims and figures contain 5 numerous combined features that the expert can also consider individually and group in more convenient combinations.

They show:

Figure 1, an insulating glass model moon with a frame-shaped spacer and two glass plates,

Figure 2, a partial zone of a band for forming a spacer and a cutting device, in schematic and perspective representation 10, with a notching tool for producing a notch in the band for a corner zone of the insulating glass moon and with a sectioning tool to completely section the band,

Figure 3, the band and the cutting device of Figure 2 in the working position of the notching tool,

Figure 4, the band and the cutting device of Figure 3 after the notching operation with the notching tool 15, in the base position,

Figure 5, the band and the cutting device of Figure 4 in the working position of the sectioning tool,

Figure 6, an enlarged representation of Figure 5 in the groove area of the band,

Figure 7, the band and the cutting device of Figure 5 after sectioning the band with the sectioning tool, in the base position,

20 Figure 8, the removal of the entire sectioned strip to remove it from the cutting device of Figure 7,

Figure 9, a front view of the band and the cutting device of Figure 2 in the direction of arrow IX,

Figure 10, a perspective representation of the sectioning tool of Figure 2 in the base position and

Figure 11, a schematic view of a variant of the blade of the sectioning tool of Figure 10.

Figure 1 shows an insulating glass model moon 1 comprising two glass plates 2, 3 and a frame-shaped spacer 4 consisting of a prefabricated band 4a that must be machined as it comes from the roll. The band 4a is known under the trade name SUPERSPACER and contains as a drying agent a moisture fixing medium, for example based on zeolite. The material of the spacer is made up of a dense plastic foam and has a rectangular profile with a wide side of, for example, 10 mm wide and with a narrow side of, for example, 5 mm wide, which is called flank and that it is prepared to glue it on the glass plates 2, 3. The frame-shaped spacer 4 has an inner side 5, an outer side 6 and two flanks 7 that must adhere to the two glass plates 2, 3 of the insulating glass moon 1. On the wide side of the band 4a that forms the outer side 6 of the spacer 4 and then referred to as the wide side 6 of the band 4a, a film adhering to a vapor barrier is adhered. Each of the flanks 7 can have a groove or recess 8 that runs in the longitudinal direction and is arranged in the vicinity of the outer side 6; see Fig. 6. The groove 8 can be filled with a doughy sealing mass, for example polyisobutylene, so that the band 4a adheres well with its flanks 7 on the glass plates 2, 3 and is joined thereto in a waterproof manner Steamed

The insulating glass model moon 1 has two corners 9, 10, whose angle deviates from a right angle. One of 40 corners 9 has an obtuse interior angle 11 that is greater than 90 °, and another corner 10 has an acute interior angle 12 that is less than 90 °.

For the manufacture of the insulating glass model moon 1, a cutting device 20 shown in FIG. 2 is used. The cutting device contains a GMA device 21 to receive the band 4a. The band 4a is removed from a roll that serves as a reserve and placed inside the equipment of gma 21. The equipment of gma 21 receives the band 4a of displaceable form in its longitudinal direction 13 and the gma by means of two surfaces of gma 22 , 23. The surface of gma 22 is a flat bearing surface. The support surface 22 defines with its flat surface a plane of gma 24 that is parallel to the longitudinal direction 13. The band 4a is guided with its outer side 6 - on which the film that serves as a anti-vapor barrier adheres - by the gma surface 22.

In an embodiment not shown, the surface of gma 22 can consist of several flat or curved gma surfaces, for example constituted by gma rods or rollers, which gm band 4a with its surfaces

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peripheral so that there is only a linear contact between the band 4a and the surfaces of gma 22. By means of the contact sites of the curved gma surfaces 22 a gma plane is formed which is correspondingly to that of the gma plane 24 in the embodiment shown in Figure 2.

The surface of gma 23 forms a right angle with the surface of gma 22 and the band 4a on one of its flanks 7. The surfaces of gma 22, 23 form the reference surfaces for precise positioning of the band 4a during cutting.

After the placement of the band 4a within the gma 21 equipment, the band of a notch 14 is provided on its inner side 5 away from the outer side 6, at a site provided for the formation of a corner of the frame-shaped spacer 4 ; see also Figures 1 and 6. The cutting device 20 has for this purpose a notching tool 25 that is movable in a direction of travel 26 arranged at right angles to the longitudinal direction 13.

The notches 14 are practiced in the band 4a in such a way that the distances between two notches 14, except for a small reduction in their length, correspond to the lengths of the edges of the glass plates 2, 3 of the insulating glass model moon 1. After the production of the notches 14, a length of said band 4 adapted to the penimeter of the insulating glass moon 1 is cut and separated from the reserve of the band 4a, with the aid of a movable sectioning tool 27. cut and separated from the band 4a reserve corresponds to the penimeter of the frame-shaped spacer 4.

Next, the notched and cut band to the necessary length is applied to the glass plate 2 along the edge thereof, specifically so that the notches 14 are always arranged in the area of a corner 9, 10 of the plate of glass 2 and the band 4a is angled in the area of the notches 14 in accordance with the corner angle of the glass plate 2. The band 4 is glued with a flank 7 on the first glass plate 2 so that the notches 14 run perpendicularly to the glass plate 2. In the corner 15 of the insulating glass moon 1 the beginning 17 and the end 18 of the band 4a are joined together. As shown in FIG. 1, the beginning 17 and the end 18 of the band 4a can always be cut in a manner corresponding to half of the inner angle 16 of the corner 15. It is thus achieved that the film located on the outer side 6 extends both at the beginning 17 and at the end 18 to the corner 15. This ensures good vapor tightness of the insulating glass moon 1.

After applying the spacer 4 on the first glass plate 2 it is glued and the second glass plate 3 is pressed on the second flank 7 of the spacer 4, whereby the two glass plates 2, 3, parallel to each other to a distance defined by the width of the spacer 4, are connected to each other by the adhesive action of the spacer 4 to obtain a semi-finished model moon 1 of insulating glass.

Due to the reduction in length taken into account when dimensioning the spacer 4, an edge joint 18 of the insulating glass 1 is at the complete edge of the moon, which is limited by the two glass plates 2, 3 and the outer side 6 of the spacer 4. The edge joint 18 is filled with a hardenable sealing material that establishes a permanently solid bond of the glass plates 2, 3. A polysulphite, a silicone resin or a polyurethane is very suitable as a sealing mass.

The cutting device 20 shown in Figure 2 is numerically controlled by a calculation unit not shown that controls all its functions, especially of the notching tool 25 and the sectioning tool 27. To cut the band 4a, the cutting device 20 has a movable sectioning tool 27 having two edges 28, 29 (figure 10). The edges 28, 29 are arranged in a blade 30 which is interchangeably fixed in the sectioning tool 27, for example by means of a screw not shown. The cutting device 20 contains a movement device 31 for the sectioning tool 27, with which the edges 28, 29 can be moved in a sectioning plane parallel to the direction of travel 26 of the notching tool 25. The direction of movement 32 of the sectioning tool 27 runs in a straight line and at a right angle with the direction of travel 26 of the notching tool 25, the plane of gma 24 being cut by the sectioning plane. Each of the edges 28 and 29 runs in a straight line. Both edges 28, 29 are coplanar and are arranged at an angle to each other, thereby forming a common tip 33. The edges 28, 29 and tip 33 are located in the aforementioned sectioning plane, which is oriented parallel to the direction of travel 26 of the notching tool 25 and in a direction parallel to the direction of movement 32 of the sectioning tool 27. Therefore, the sectioning plane corresponds to the plane of the blade 30 and forms a right angle with the plane of gma 24 (figure 9).

As an alternative to a blade 30 with two edges 28, 29 two blades 30a, 30b can also be interchangeably arranged in the sectioning tool 27, as shown in Figure 11. The edge 28 is arranged in the blade 30a and the Edge 29 is arranged in the blade 30b. Both blades 30a, 30b are arranged back to back, so that the two edges 28, 29 again form a common tip 33. In an embodiment not shown, a blade can also be used that has only one edge 28 and extends throughout the entire band width 4a.

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Figure 9 shows the arrangement of the sectioning tool 27 and the displacement equipment 31 in relation to the gma equipment 21. The sectioning tool 27 and the displacement equipment 31 are located on one side of the remaining gma 21 equipment away from the surface of gma 22. The band 4a is located with its outer side 6 - on which the film adheres - on the surface of gma 22. Therefore, the edges 28, 29 of the sectioning tool 27 can be moved through the band 4a by the travel equipment 31 from the outer side 6 of the band 4a. The equipment of gma 21 is provided with a recess 34 through which the edges 28, 29 can be moved. Each of the edges 28, 29 is then oriented obliquely to the plane of gma 24.

The blade 30 moved through the band 4a, with the tip 33 and the edges 28, 29, is represented in Figure 6. It can be seen from the representation of Figure 6 that each of the edges 28, 29 moves through the film in a direction such that the force exerted by the edge 28, 29 on the film is directed from the outer side 6 of the band 4a, obliquely to said outer side 6, in the direction of its inner side 5 and each one of the edges 28, 29 produces a cut that propagates on the outer side 6 in a right angle with the longitudinal direction 13 of the band 4a. The tip 33 moves through the film from a site placed in the central area of the outer side 6. The forces exerted by both edges 28, 29 on the film are directed obliquely to the outer side 6 and produce cuts that, on the side outside 6, they propagate in mutually opposite directions at right angles to the longitudinal direction 13 of the band 4a. This has the advantage that the forces that occur when cutting the film are substantially compensated in a transverse direction to the longitudinal direction 13. In addition, a burr eventually produced in the film is directed towards the inner side 5 of the band 4a, so that this burr is not an obstacle during the transport of the band 4a out of the cutting device 20. The two edges 28, 29 are arranged in the form of a cradle in relation to each other, so that the common tip 33 is directed towards the plane of gma 24 in a starting position prior to the cutting of the band 4a.

In an embodiment not shown, it can also be provided that the sectioning plane is arranged obliquely to the plane of gma 24. The direction of movement 32 of the sectioning tool 27 remains oriented perpendicular to the direction of movement 26 of the notching tool 25, but it can then have a different angle of 90 ° with respect to the longitudinal direction 13 of the band 4a. The sectional plane may, for example, have an angle such as longitudinal direction 13 that the sectional plane is coplanar to one of the cutting surfaces of the cuneiform notch 14.

In the following, procedural operations are performed with the help of the band 4a with the aid of the cutting device 20 with the aid of Figures 2 to 8.

Figure 2 shows the cutting device 20 in the idle state. The notching tool 25 and the disconnecting tool 27 are in their respective base position. The band 4a is placed inside the gma 21 equipment. The band 4a is moved in the longitudinal direction 13 so that a site provided for the formation of a corner of the frame-shaped spacer 4 is in the cutting area of the notching tool 25. The cutting device 20 has treads 35 that are associated with the surface of gma 22. The footswitches 35 can be moved by actuators not shown in the direction of the surface of gma 22 and can firmly clamp the band 4a on the surface of gma 22. For this purpose, each step 35 has a clamping surface that is turned towards the surface of gma 22 and which can be approximated to the inner side 5 of the band 4a. To control all the described functions, the cutting device 20 is connected to a numerical calculation unit not shown. Drive units, for example pneumatic cylinders and servomotors, are provided to move the components of the cutting device 20 in the manner described.

The notching tool 25 has two edges 36, 37 which, considered in their direction of travel 26, are arranged in a V-shape relative to each other. The edges 36, 37 are moved through the band 4a in the direction of travel 26. Figure 3 shows the state in which the edges 36, 37 in the band 4a are shown. The edges 36, 37 have punched in the band 4a a cuneiform section 38 that is still between the two edges 36, 37.

Then, the notching tool 25 is moved back to its base position along the direction of travel 26; see the representation of figure 4. The die-cut section 38 remains located here between the edges 36, 37 and is then discarded. Band 4a is now provided with a cuneiform notch 14.

The angle between the edges 36, 37 arranged in a V-shape is chosen so that it complements at least substantially 180 ° the value of the inner angle 11, 12, 16 of the corner 9, 10, 15 of the moon model 1 of insulating glass to be manufactured. The edges 36, 37 can be correspondingly regulated by the calculation unit not shown in an adjustment step carried out before the notching operation. To this end, the notching tool 25 contains means 39 hinted only schematically in the figures to vary the angle of the notch. The means 39 comprises, for example, an actor and a gear to convert a movement of the actor into a respective tilting movement of the two blade blades with the edges 36 and 37. An execution

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advantageous of the means 39 for varying the angle of the notch is known from EP 1 839 789 B1.

The edges 36, 37 arranged in a V-shape are positioned so that their tip is located a small distance above the plane of gma 24 when the notching tool 25 is moved in the direction of travel 26. Thus, the band 4a it cannot be completely sectioned by the edges 36, 37. On the contrary, the film arranged on the outer side 6 of the band 4a remains undamaged. It is advantageous to fit the band 4a as close as possible to the film so that, as it forms the corner of the spacer 4, the smallest possible amount of plastic material of the band 4a has to be bent.

After punching the notch 14, the footprints 35 can be lifted away from the surface of gma 22, whereby the band 4a is no longer imprisoned. The band 4a can be further displaced in the longitudinal direction 13. Next, the notching process can be repeated at the next immediate site of the band 4a in which the next corner of the spacer 4 should be formed. The process is repeated so corresponding to the number of corners of the insulating glass moon 1.

After the last notch 14 has been stamped, the footsteps 35 do not open at the moment and the band 4a remains imprisoned. The band 4a is now cut with the sectioning tool 27 in the center of the recess 14. As can be seen in Figures 5 and 6, the sectioning tool 27 is moved with its edges 28, 29 through the band 4a from the side of the plane of gma 24 that is turned towards the surface of gma 22. Particularly in figure 6, the recess 34 of the gma 21 equipment can be seen through which the blade 30 moves. In figures 5 and 6 the band is shown 4a at the moment in which it has been cut from its outer side 6, with forces directed obliquely in the direction of the inner side 5 of the band 4a having exerted by the edges 28, 29 and the cuts having propagated in mutually opposite directions on the side outside 6 of the band 4a at right angles with its longitudinal direction 13.

After the cutting of the band 4a the sectioning tool 27 is moved back to its base position, as shown in Figure 7. Next, the footswitches 35 are moved from their clamping position to their base position, see the Figure 8, and the cut end 18 of the band 4a is removed from the gma equipment 21 in the longitudinal direction 13 and fed to the first glass plate 2 in a manner not shown in detail and glued thereon with its flank 7.

Reference symbols

1 Luna insulated glass model

2 glass plate

3 Glass plate

4 Spacer

4th Band

5 Inner side

6 Outside side

7 Flanks

8 Slot or recess

9 Corner

10 Corner

11 obtuse interior angle

12 Sharp interior angle

13 Longitudinal Direction

14 Notch

15 Corner

16 inside angle

17 Principle

18 Final

19 Edge joint

20 Cutting device

21 GMA Team

22 Gma surface

23 Gma surface

24 Gma plane

25 Notching tool

26 Direction of travel

27 Sectioning tool

28 Edge

29 Edge

30 Blade

30th Blade

30b

31

32

33

3. 4

35

36

37

38

39

Knife

Direction of travel

Direction of travel

Tip

Hole

Pisa

Edge

Edge

Die cut section Adjustment means

Claims (11)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 1. Procedure for machining a plastic band (4a) containing a drying agent during the manufacture of a frame-shaped spacer (4) for an insulating glass moon (1) having an inner side (5 ), an outer side (6) and two flanks (7) that must adhere, on the insulating glass moon (1), to two glass plates (2, 3) of said insulating glass moon (1), adhering a film that serves as a barrier against the vapor on the side of the band (4a) that forms the outer side (6) of the spacer (4) and is then called the outer side (6) of the band (4a), with the following steps: the band, on its side that is away from the outer side (6) and then referred to as its inner side (5), is provided with a notch (14) at least one place provided to form a corner of the spacer (4) frame shape; a length of said band (4a) adapted to the penimeter of the insulating glass moon (1) is cut and separated from a reservoir (4a), characterized by that when cutting the band (4a), an edge (28; 29) moves through the film in a direction such that the force exerted by the edge (28; 29) on the film is directed from the outer side (6) of the band (4a), obliquely to said outer side (6) of said band (4a), in the direction of its inner side (5) and the edge (28; 29) produces a cut that propagates on the outer side (6 ) of the band (4a) at right angles with its longitudinal direction (13). 2. Method according to claim 1, wherein the band (4a) is cut at the same time with two coplanar edges (28, 29) that are arranged at an angle to each other and form a common tip (33) that moves to through the film from a site placed in the central area of the outer side (6) of the band (4a) in a direction such that the forces exerted by the two edges (28, 29) on the film are directed from the outer side (6) of the band (4a), obliquely to said outer side (6) of said band (4a), in the direction of its inner side (5) and produce cuts that propagate in mutually opposite directions on the outer side (6) ) of the band (4a) at right angles with its longitudinal direction (13). 3. Method according to claim 1 or 2, wherein both edges (28, 29) are obliquely oriented to the outer side (6) of the band (4a) and, when cutting the band (4a), move through the film in the direction perpendicular to the outer side (6) of said band. 4. Method according to any of the preceding claims, wherein the band (4a), at the site where it must be cut, is first provided with a notch (14) to form the corner of the spacer and then is entirely sectioned in the center of the notch (14). 5. Method according to claim 4, wherein the band is provided with a cuneiform notch (14) having a cradle angle that is smaller than the inside corner angle (15) that is formed by the mutual joint of the beginning (17) and end (18) of the band (4a). 6. Cutting device for carrying out the method according to claim 1, which comprises a crane equipment (21) that receives and grinds the band (4a) in a displaceable way in its longitudinal direction (13) and that has two grinding surfaces ( 22, 23) that form a right angle, a notching tool (25) for notching the band (4a) on its inner side (5), whose tool is movable in a direction of travel (26) arranged at right angles to the longitudinal direction (13), a movable sectioning tool (27) having at least one edge (28; 29) for cutting the band (4a) and a displacement device (31) for the sectioning tool (27), with which each of the at least one edge (28; 29) can be displaced in a sectioning plane parallel to the displacement direction (26) of the notching tool (25), the grinding equipment (21) defining a grinding plane (24) for the outer side (6) of the band (4a) that is oriented both parallel to the longitudinal direction (13) and parallel to the direction of travel (26) of the notching tool (25), and the crane plane (24) being cut by the section plane, characterized by that The sectioning tool (27) can be displaced by its displacement equipment (31) during cutting such that each of the at least one edge (28; 29) is then oriented obliquely to the plane of grind (24) and the force exerted by the edge (28; 29) on the film located in the plane of grna (24), on the outer side (6) of the band (4a), is directed from the outer side (6) of the band (4a) ), obliquely to said outer side (6) of said band (4a), in the direction of its inner side (5). 7. Cutting device according to claim 6, wherein each of the at least one edge (28; 29) can be moved by means of its displacement device (31), from the side of the gma equipment (21) remote from the surface of gma (22), through a hole (34) provided in the gma equipment (21). 5 8. Cutting device according to claim 6 or 7, wherein the displacement equipment (31) of the tool sectioning device (27) contains a tilting arm on which the sectioning tool (27) is fixed. 9. Cutting device according to claim 6 or 7, wherein the displacement equipment (31) of the sectioning tool (27) moves the sectioning tool (27) in a straight line. 10. The cutting device according to claim 9, wherein the direction of travel (32) of the disconnecting tool 10 (27) runs at a right angle to the direction of travel (26) of the notching tool (25) and each of the at least one edge (28; 29) of the sectioning tool (27) is obliquely oriented to the direction of travel (32) of the sectioning tool (27). 11. Cutting device according to claim 10, wherein the sectioning tool (27) has two edges (28, 29) that are arranged in the form of a cradle relative to each other and form a common tip (33) which, in a position 15, is directed towards the plane of gma (24) before the cutting operation. 12. Cutting device according to any of claims 6 to 11, wherein the notching tool (25), considered in its direction of travel (26), has two edges (36, 37) arranged in a V-shape with respect to to another to notch the band (4a) in the form of a cradle, and in which the tip formed by the two edges (36, 37) arranged in a V-shape is located in the sectional plane of the sectioning tool.