SE439514B - SPACE HOLDER FOR ISOLATOR AND SETS AND DEVICE FOR ITS MANUFACTURING - Google Patents

Description

15 20 25 30 35 7s1os42 ~ 1 fl UN-'TY 2 has therefore been referred to carry out additional gluing, soldering or similar treatments of the corner area, which, however, has entailed a considerable increase in manufacturing costs without achieving a complete satisfactory results. The object of the present invention is to provide a spacer for insulating glass with several panes and a method and a device for manufacturing the same, so that despite a reduced assembly cost a considerable improvement is ensured with respect to the vapor permeability, in particular in the corner areas and a complete flat abutment of the windows against the side surfaces of the spacer frame. The spacer according to the invention is based on the spacer shown in DE patent specification 1 501 170 and is characterized by what is stated in the characterizing part of claim 1.

According to the invention, the corner connections used hitherto are thus avoided.

Particularly advantageous embodiments of the invention have the features stated in claims 2, 3 and 4.

Thus, instead of corner connections, a cross-section closed and therefore a tube-forming extruded profile is used according to the invention, which due to its filling with desiccant can be bent accurately, so that a flat and tight abutment against the side surfaces of the spacer formed ensured. The berth is located at a satisfactory distance from the bent frame corner, where experience shows that there are less stresses. It is therefore not only possible to seal and close the abutment by known means but also to insert suitable connecting elements, preferably consisting of plastic, in the pipe ends, instead of the desiccant present in the area of the pipe ends, since in these areas no deformations of the extruded profile tube occurs. Since the individual parts of the spacer consist of one and the same extruded profile pipe, the pipe ends of the abutment or shock absorber rfïíüií "10 15 20 25 30 35 78103424 gfrtttt_líotoít_ i QUALITY e 3 lena can be connected tightly and firmly to each other. The connecting elements used for this purpose does not form part of the invention.

According to an advantageous embodiment of the invention, the extruded profile tube has a substantially rectangular cross-section, the edges of which located on the outside are severely broken. This cross-sectional shape ensures that on the one hand flat abutment surfaces for the windows and on the other hand wedge-shaped cavities for the sealant are obtained on the outside of the frame, this cross-sectional shape being particularly suitable for bending. However, the invention does not exclude other pipe cross sections, for example semicircular pipes for forming the spacer.

Finally, according to the invention, the bending radius of the extruded profile pipe can be selected so that the bent area is covered by the insulating glass panes holding the glass folding web and is not visible from the outside.

A special advantage of the spacer according to the invention is that it can be manufactured in a particularly simple and time-saving manner and is therefore very inexpensive.

A particularly advantageous process for the manufacture of such spacers is characterized by what is stated in claim 8.

In the method according to the invention it has proved to be particularly advantageous if two extruded profile tubes, which are placed on top and cover each other, are bent together.

In this way it is ensured that the U-shaped bent frame parts, the legs of which have different lengths, can be assembled by mirroring one of the two frame parts into a precisely fitting spacer frame, although the impact points are displaced relative to each other.

Since it is possible to change the stop for determining the pipe length intended for bending, the method according to the invention also entails an opportunity to produce two accurately U-shaped frame halves with the same leg lengths, the impact points of which will thus be in the middle 78103 42-1 in É PÛÛH I ÛUÅUTYr 10 15 20 25 30 35 between two opposite frame parts.

Finally, the invention provides a possibility for easily bending the frame corners, the distance between the stop and the bending device closely corresponding to the distance between the separating device and the bending device. All you need to do is connect two carefully cut, straight extruded profile tubes to the bent frame corners. Here, too, the dimensional accuracy of the frame is improved, since two extruded profile tubes, which cover and lie on top of each other, are always machined together. According to an advantageous method step according to the invention, the bending can take place in an oblique plane, the inclination of which relative to the horizontal plane is preferably of the order of 300.

The pipe sections slide along these oblique planes, it being found that this inclination of the bending plane has the least resistance to the pipe sections moving along them. This makes it possible to use the pipe rods intended for processing practically without spillage. Although the remaining bar residue, unless it is very short, has a smaller length than the length required for bending, it can be co-processed because due to the skew of the bending plane according to the invention it is possible to adapt this bar residue to already bent parts by introduction of bonding agents. In the area of these impact points, the spacer tube itself during bending would be unstable during movement along the bending plane.

However, due to the skew of the bending plane, the resistances which counteract the movement of the pipe along the bending plane are relatively small. One need only consider that the curvature of the tube does not coincide with a point of impact.

According to another embodiment of the method according to the invention, a vibration is exerted at the connection at the separation on the part of the bent spacer part present in the area of the bending device. This action causes the drying means present inside the tube to flow out of the tube end due to the vibration and therefore provides space for insertion of a connecting member.

This vibration measure has the additional advantage that the bent spacer parts can be connected to a working surface forming a bending plane to provide a closed frame in immediate connection with the bending. This makes confusions under the bent frame parts impossible, which could otherwise occur if the bent frame parts were placed in storage and assembled at another workplace.

A suitable device for carrying out the method according to the invention has the features stated in claims 13-20.

The invention will be described in more detail below with reference to the accompanying drawings, which show exemplary embodiments. Fig. 1 shows from the front a spacer frame with relatively offset joints. Figs. 2 and 3 show modifications of the spacer frame of Fig. 1. Figs. 4-6 schematically show the bending method for manufacturing a spacer frame of Fig. 1.

Fig. 7 shows in cross section and on a larger scale an extruded profile pipe. Figures 8 and 9 show in the vertical and horizontal section, respectively, a joint between two extruded profile tubes. Fig. 10 shows from the side a bending machine with an inclined bending plane. Fig. 11 shows in subsection a work plate of the bending machine with a driven stop thereon. Fig. 12 shows in longitudinal section a worktop in the area of the bending device. Fig. 13 shows the bending device with a vibrating device from above. Fig. 14 shows a section along the line XIV-XIV in Fig. 13. Fig. 15 shows from above a further embodiment of the invention. Fig. 16 shows the spacer according to Fig. 15 in cross section and Fig. 17 shows from above a corner of a framed insulating glass device with several panes. The spacer frame 1 shown in Fig. 1 has bent frame corners 2 and consists of two frame parts 6, 7, which are connected to each other at the joint points 3, 4 by means of ordinary connecting element 5.

The frame parts 6, 7 consist of extruded profile tubes, the cross section of which is shown in an exemplary embodiment in Fig. 7.

The inner space of these extruded profile tubes is filled by means of a drying agent 24, which is filled into the tube before bending of the frame parts 6, 7. The curvature of the bent frame corners 2 is then chosen so that the corners of the profile holding the multi-pane insulating glass cover the curvature. In the area of the joint points 3, 4 a normal seal is arranged.

The frame halves 6, 7 are now so bent that the joint points 3, 4 are always at the same distance y "from the nearest frame corner 2. In this way it is possible to bend and cut the two frame parts_6, 7 together. It is only necessary to turn one of the two frame parts 6, 7 180 ° in order to assemble the two frame parts 6, 7 very precisely to the closed frame 1 shown in Fig. 1. The leg lengths y 'are consequently the same for the two frame parts 6. , 7. The total cover y of the frame 1 is obtained by the leg lengths y 'and y ". The width of the frame 1 is denoted by x.

In the exemplary embodiment according to Fig. 2, it is assumed that only the frame corners 2 with the same leg lengths y "are bent by extruded profile tubes and are connected to straight pipe sections 8, 9 at the joint points 3, 4. As a result, a total of eight joint points 3, 4 are obtained. risks because the pipe sections 8, 9 and the bent frame corners 2 are made of one and the same profile cross section.

The leg lengths y "of the bent frame corners 2 must in all circumstances be chosen so long that there are no such cross-sectional changes in the area of the joint points 3, 4, which could cause a curvature.

As a result, the problem of the adjacent parts is mastered better than with known corner connections.

Another modification is shown in Fig. 3, according to which the two frame parts 10, 11 are formed with the same leg lengths y 'and are gel-likely assembled relative to each other at the joint points 3, 4. These frame parts are also 10, ll can be bent together.

In the exemplary embodiment according to Figs. 4-6, the individual manufacturing steps for producing the spacer frame according to Fig. 1 are explained.

In accordance with these figures, an extruded profile tube 18 is displaced along a guide track 13 up to a stop 14, the bending portion 6 being guided by means of a bending device 12, which is schematically shown as a roller 16 and a pivotable bending element 17. When the bending element 17 is pivoted counterclockwise 90 ° around the roller 16 (see the path of movement indicated by dotted lines), the frame part 6 900 is bent over, the distance between the stop 14 and the center of the roller 16 being dimensioned so that the leg length y '(see Fig. 1) is obtained - les. Of course, the extruded profile tube 18 is held during this bending in the usual manner on both sides of the dashed portion y '.

After the first bending according to Fig. 4, the stop 14 is displaced relative to the bending device 16 along the guide path 13 and the released extruded profile pipe 18 with the angled frame part 6 is displaced again towards the stop 14. Assuming the embodiment according to Fig. 1, the distance x between the stop 14 and the center of the roller 16 the width of the spacer frame 1 indicated in Fig. 1. After clamping the extruded profile tube 18, the second bending is released 90 °, so that the bent extruded profile tube 18 assumes the position shown in Fig. 6. At a distance y 'from the bending device 16 is a rotating saw blade 15, by means of which the clamped extruded profile tube 18 is cut through. As can be seen from Fig. 5, a distance relationship between the saw blade 15 and the stop 14. is also maintained. the distances x and y '. In this case, it has proved expedient to accurately design the drive device for the movement 10 of the stop 14 in order to achieve the required tight tolerances. The bending device shown must be able to manufacture frames with different widths and heights, it is suitable to arrange an electrical control for adjusting the stop 14. For example, a decadal switch can be used for the desired distances in the x- and ry-axes, the use of which is particularly advantageous in case of test bends or in emergency operation.For a continuous production, a hollow belt reader with a two-axis display unit can be used.Both axles are so adjustable by means of correction switch, that when entering the frame dimension, the stop 14 is displaced to the corresponding position. The drive device for the stop 14 can be made by means of a positioning motor with fast and slow clutch, the distance traveled being measured by means of an angular step sensor.

Suitable devices for performing this procedure are shown in Figures 10-14.

The problem with bending of extruded profile tubes 18 is that no deformations occur in the area of the bent frame corners 2 (see Fig. 1), which deformations prevent a tight abutment of the glass panes against the side outer surfaces 19 of the extruded profile tubes 18 (cf. Fig. 7).

The extruded profile tube 18 has in the substantially planar inner profile wall 20 on the outside longitudinal grooves 21, which have a substantially decorative character and are therefore not absolutely necessary. In the central region of these outer surfaces 20 there is a continuous, deeper and therefore wall-weakening groove 22. In the thereby weakened wall area a plurality of openings 23, for example perforations, are arranged, which make it possible for the existing one between the glass panes the air or other gases act on the desiccant 24 through the openings 23. The wall-weakening gutter 22 can also be arranged on the inside of the wall 20.

The extruded profile tube 18 according to Fig. 7 has thickened wall areas 25 and weakened wall areas 26, which means that the wall areas 10 in the pressure and traction zone 10 15 20 25 30 35 7810342-1 g POdOR / "i fi" 9 in QUALITY 25 after bending remain flat and true to shape, while the weakened wall areas 26 ensure that the side outer surfaces 19 during bending are not exposed to any lateral bulges but are kept flat in order to ensure a tight abutment of the glass panes.

As the material for the extruded profile tube 18, the alloy Al Mg Si 0.5 is preferably used. This alloy is subjected to a heat treatment in the usual manner to enable, on the one hand, a crack-free bending and, on the other hand, a perforation or slit in the area of the wall weakening 22 of the extruded hole profile produced.

Figures 8 and 9 show vertical and horizontal longitudinal sections through two frame parts in the area of the joint points 3, 4, conventional connecting elements 5 being inserted into the ends of the individual pipe sections 18. In this exemplary embodiment, the individual connecting element 5 in the middle has a separating portion 28, the periphery of which closely corresponds to the cross section and periphery of the individual pipe 18, respectively.

The problem now is to insert these connecting elements 5 into the tubes 18, which during bending are still filled with drying agent 24, which of course must be retained in the frame 1. It would be laborious to remove the drying agent 24 in the area where the connecting element element 5 occupies because then no accurate control of the absorbed amount of desiccant 24 is achieved.

For this reason, in the method shown in Figs. 4-6 after the cross-section illustrated in Fig. 6, a vibration is exerted by means of the rotating saw blade 15 on the bent frame parts 6, 7, the intensity and duration of which is an accurate measure of how much desiccant flows out of the pipe end, which is produced by the sawing. By performing this vibration in the bending machine, it is possible to insert the connecting elements 5 into the pipe ends of the portions 6, 7 immediately after bending and thereby prevent a further emptying of the pipe.

At the same time, it is possible to join the frame parts 6, 7 of the bending machine 6, 7 produced in the bending machine 1 into a closed spacer frame 1, which are produced in bending machine l10 15 20 25 30 35 7810542-1 r POOR QUALITY.

In the image cross-section of Fig. 11, a working plate of the bending machine is indicated by 29 (compare Fig. 10), the surface of which forms the bending plane 34, along which the frame parts 6, 7 are displaced in the bending method according to Figs. 4-6.

On the edge of the work plate 39 there is a schematically indicated guide path 13, which runs in the same plane as the bending plane 34 and along which the extruded profile tubes 18 intended for bending are displaced. In the exemplary embodiment according to Fig. 11, the stop 14 is displaced along this guide path 13 by means of a ball roller spindle 32. At 31, a holder is schematically shown which connects the stop 14 to the surrounding area of the ball roller spindle 32. In addition, the abutment 14 and its holders 31, respectively, are guided on a lead screw 33 to ensure an accurate plane-parallel displacement of the abutment surface. In this abutment surface there is, as schematically indicated, an abutment switch 30, which the end of the extruded profile tube 18 abuts when displaced against the abutment 14. This switch 30, the design of which is well known to the person skilled in the art, initiates the regulation in the described bending method by first causing a clamping of the abutting extruded profile tube 18, which triggers the first bending, the abutment 14 displaces the next bending distance and again releases the extruded profile tube 18.

From the simplified representation in Fig. 12 it appears that it is advantageous to bend two extruded profile tubes 18 placed one on top of the other. Fig. 12 also shows a guide strip 35, which laterally limits the guide path 13 according to Fig. 11. The control measures prevent a lifting of the extruded profile tubes 18 from the working plate 29, the necessary clamping means not being included in the figure for the sake of clarity. Of course, the guide strip 35 is so arranged that it does not prevent the abutment 14 from displacing.

In the exemplary embodiment according to Figs. 13 and 14, the aforementioned vibration device 36, 37 is shown schematically. which free end surface of the bolt acts from below against the bent frame part 6. The vibrator 37 can be of a conventional type and connected to the work plate 29. However, it can also be attached to a special stand. This vibrating bolt 36 is displaced along its longitudinal axis in a pivoting movement, which is transmitted to the still clamped frame parts 6 near the bending device 16, 17. This has the consequence that a part of the drying means 24 flows out through the pipe end 40 released during sawing and falls into a container located under the saw 15 through an opening in the work plate, so that this means can be used again in a subsequent filling of extruded profile tubes 18.

It has proved to be particularly advantageous if the bending plane 34 of the working plate 29 is arranged obliquely, as shown in Fig. 10. The angle α which the bending plane 34 forms with the horizontal plane amounts to approximately 30 ° in a bending machine tested in practice. Preferably, the worktop 29 can be adjusted in different tilting positions relative to the frame 38 in order to achieve the most favorable tilting position for the extruded profile pipe intended for processing. Namely, it has been found that in the described bending method according to Figs. 4-6 it is also possible to use the rest of the extruded profile pipe for processing by connecting it to the bent or bending pipe section by means of connecting elements 5. In this case, of course, the problem how such a remaining part of the extruded profile tube 18 relates when the two bends according to Figs. 4-6 are carried out, it being assumed that the frame parts 6, 7 slide along the bending plane 34 and thereby have to overcome the frictional resistance. It has been found, however, that the inclination of the working plate 29 and in particular the angle of inclination is the reason why such cut extruded profile parts are not broken at the joint points during bending, as might be expected. The invention is not limited to a snow position and to the exemplary angle of 30 °. The person skilled in the art can instead, due to this knowledge, set the most favorable position of the bending plane 34.

The working plate 29 has such a large surface that it is possible to assemble the bent frame parts 6, 7 on it after they have been sawn off without the effect of the bending machine thereby being adversely affected. Namely, it has been found that a mounting carried out by the bending in the bending machine is on the one hand expedient in that the spacer frame can be assembled from closely fitting frame parts 6, 7 and on the other hand that this immediate mounting means that the desiccant 24 present in the extruded profile tube 18 is not unnecessarily exposed to the ambient air, since, as is known, this desiccant 24 is moisture-binding and therefore unnecessarily, and thus has less effect in the built-in absorbing moisture from that air, which surrounds the bending machine stand in the window.

In Fig. 10 it is schematically indicated that the saw blade 15 is pivotable by means of a rocker arm 39, which also carries the drive motor for the saw blade 15, so that the sawing according to Fig. 6 can easily be performed by pivoting down this unit 39, 15. Here too a control device is provided , which first releases the drive device for the saw blade 15, when the second bending is completed but the extruded profile tube 18 is still clamped. In addition, a braking device is connected to the drive device of the saw blade 15, which braking device quickly stops the rotation of the saw blade 15 after the sawing has been completed.

Fig. 15 shows an embodiment of a spacer 1, which consists of a single bent extruded profile tube 18, which in its joint location is closed and sealed in a suitably known manner. The extruded profile tube is bent in the area of the corner of this frame-shaped spacer. It has been found advantageous to arrange the joint stand 41 in the area of a straight portion of the spacer frame. With this construction QUAUTY 13 no corner connecting means are required either, so that it is only necessary to bend the extruded profile tube 18 in such a way that the dimensional accuracy is maintained and thus the seal against vapor permeability. kerställes.

As can be seen from Fig. 16, the tube 18 consists of a substantially rectangular extruded profile in cross section, the inwardly directed wall 18 of which is flat. The side walls 43 also have parallel and flat surfaces with each other so that the windows 44 can be brought into sealing abutment against the spacer holder frame 1. The outwardly facing wall 45 of the extruded profile tube 18 is provided in the corner area with strong chamfers 46. These chamfers 46 form with the projecting edges of the windows 44 a circumferential keyway, in which a sealing means 47 is arranged for connecting the windows 44 to the extruded profile pipe 18 in order to seal the gap.

The cavity 48 of the extruded profile tube 1 is filled with a desiccant 49. The inwardly facing wall 42 has openings 12, so that the gas present in the inner space 50 between the windows 44 and the spacer frame 1 can penetrate into the cavity 48 through the openings 51, so that its possible moisture content can be delivered to the desiccant 49. The inside of the wall 42 may have continuous strips 52 as in known insulating glass with several panes.

It is also advantageous to arrange a continuous weakening in the central area of the wall 42 and in this case breakthroughs 51 are arranged with the aid of suitable tools.

In the exemplary embodiment according to Fig. 17, a corner area of an insulating glass with several panes is shown, which is surrounded by glass folding strips 53 and abutment portions on some frame, respectively.

It can be seen that the bending radius 54 of the extruded profile tube 18 is so selected that the spacer 1 in this corner area 55 cannot be observed from the outside. Instead, there is a clear distance between the corner 56 and the glass seam portion 53 and the inwardly facing edge of the spacer 1 in the corner area 55.

Claims (19)

7810342-1 10 l5 20 25 30 14 PATENT REQUIREMENTS A spacer for insulating glass with several panes, consisting of a hollow profile which can be assembled into a frame, on the two outer surfaces of which the glass panes are intended to be applied, the inward profile profile of which is substantially flat and provided with openings and whose cavities are filled with a desiccant, k characterized in that the spacer consists of at least one extruded profile tube (18) of light metal, which is bent in the area of the frame corners with already filled desiccant (24) and is assembled in at least one joint (3, 4, 41). located on a straight frame side, this jointing point (3, 4, 41) being centered by means of a connecting element (5) inserted in the pipe ends (40) instead of the existing drying means (24). Spacer according to Claim 1, characterized in that it consists of at least two extruded profile tubes (6, 7) bent in the region of the frame corners (2), the joint points (3, 4) being displaceable relative to one another on the opposite sides. adjacent frame parts (6, 7) and have the same distance (y ") to the nearest frame corner (2). Spacer according to claim 1, characterized in that between the individual joint points (3, 4) further joint points are arranged, which enable the use of profile pipe residues. A spacer according to claim 1, characterized in that it consists of an extruded, in one piece extruded profile profile tube with a circumferential, closed wall, the joint location of which is located approximately at the frame corners (55), in the middle area of a straight frame side and is held together and is sealed in a known manner. Spacer according to claim 4, characterized in that the extruded profile tube (18) has a substantially rectangular cross section, the outer edges of which are strongly broken (46). Spacer according to Claim 4 or 5, characterized in that the bending radius (54) of the extruded profile tube (18) is chosen such that the bent area (55) of the glass folding strip (53) holding the insulating glass panes (44) and the abutment portions are respectively covered and not visible from the outside. Spacer according to one of the preceding claims, characterized in that the extruded profile tube (18) has a substantially rectangular cross-section, the side wall areas (19) having a smaller wall thickness than the wall (25) facing outwards after installation. Spacer according to one of the preceding claims, characterized in that the extruded profile tube (18) consists of the AlMgSi 0.5 alloy. A method of manufacturing a spacer, in particular according to any one of the preceding claims, in which the extruded profile tube is guided in the bending plane along a bending device up to a stop, the distance of which to the bending device corresponds to the distance between a joint and a nearby one, in particular at a distance located frame corner, whereupon the first bending takes place 90 °, after which the extrusion profile tube with the bent end is displaced towards the stop, which is displaced a distance corresponding to the length of an adjacent frame side from the bending device, whereupon a second bending takes place 90 ° and finally the extrusion profile at a distance from the bending device, which corresponds to the difference of the length of the second frame side to the length of the bent first pipe end, characterized in that two extruded profile tubes are bent together placed on top of each other and that the part of the bent distanshállardelen vib in connection with the hijacking. 10. A method according to claim 9, characterized in that the bending takes place in an oblique plane, the inclination of which relative to the horizontal plane is preferably of the order of approximately 30 °. 11. ll. A method according to claim 9 or 10, characterized in that the bent spacer part is assembled on a working surface forming a bending plane to form a closed frame. Device in particular for carrying out the method according to one of Claims 9 to 11, in which a guide path (13) for the extruded profile tube (18) extends along the bending plane (34) of a per se known bending device (12). ), in which path on the dispensing side (with respect to the bending device 12) a stop is adjustably controlled and on the supply side in front of the bending device (12) a cutting device, in particular a saw (15) is arranged, characterized in that the guide path (13) forms the lower edge of a worktop (29), which is arranged obliquely relative to the norisonal plane, for example at an angle (α) of 30 °. Device according to Claim 12, characterized in that the stop (14) is programmably adjustable by means of a remotely adjustable drive device, for example a ball roller spindle (32). Device according to claim 13, characterized in that the stop (14) has a drive switch (30) regulating the drive of the bending device. Device according to Claim 13 or 14, characterized in that the internal height of the guide web (13) and the thickness of the bending device (12), respectively, correspond to twice the height of an extruded profile pipe (18). Device according to one of Claims 13 to 15, characterized in that a vibrating device (36, 37) acting on the bent extruded profile tube (6, 7) near the bending device. 17. Device according to claim 16, characterized in that a vibrating member (36) in the working plate (29) extends perpendicularly thereto and is arranged above the bending device (12) with respect to the working plate (29). slope (G). Device according to one of Claims 13 to 17, characterized in that the cutting device consists of a rotating and pivotally guided saw blade (15) and has a guide which drives the saw blade (15) only during a pivoting movement and at the end of sawing. quickly slows down the rotation of the saw blade (15). Device according to claim 12, characterized in that the working plate (29) is adjustable in different inclination positions relative to the frame (38).