EP0665357A1 - Procédé et dispositif pour la fabrication d'un cadre espaceur pour vitrages isolants - Google Patents

Procédé et dispositif pour la fabrication d'un cadre espaceur pour vitrages isolants Download PDF

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Publication number
EP0665357A1
EP0665357A1 EP95100596A EP95100596A EP0665357A1 EP 0665357 A1 EP0665357 A1 EP 0665357A1 EP 95100596 A EP95100596 A EP 95100596A EP 95100596 A EP95100596 A EP 95100596A EP 0665357 A1 EP0665357 A1 EP 0665357A1
Authority
EP
European Patent Office
Prior art keywords
frame
frame leg
leg part
bending
straight connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95100596A
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German (de)
English (en)
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EP0665357B1 (fr
Inventor
Franz Bayer
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Bayer Isolierglas und Maschinentechnik GmbH
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Bayer Isolierglas und Maschinentechnik GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • E06B3/67304—Preparing rigid spacer members before assembly
    • E06B3/67308—Making spacer frames, e.g. by bending or assembling straight sections
    • E06B3/67313—Making spacer frames, e.g. by bending or assembling straight sections by bending

Definitions

  • the invention relates to a method for producing a - in particular a desiccant-containing - spacer frame for insulating glass panes, wherein a desiccant-free hollow profile for forming the frame corners is bent around parallel bending axes and initially left unbent in the area of a last frame corner and a connection point of two in the area of a last one Frame legs having rabbit leg parts are left open in that a first frame leg part is already bent and the other second frame leg part remains unbent at the last corner, a straight connector being inserted into one of the frame leg parts, in particular into the already bent frame leg part, then by one parallel to the Bending axis extending pivot axis is pivoted or bent so far that the protruding part of the straight connector can be inserted into the other frame leg part, after which the Frame leg parts are connected to form the connection point by means of this straight connector.
  • the invention further relates to a device for carrying out the method with a holding device for a frame bent at several corners, still open on a frame leg and with a bending device for bending over a last frame leg part and producing the last bend, the bending device having a bending leg with which the frame leg part to be bent is bendable around a fixed abutment.
  • a method of the type mentioned at the outset is known, for example, from DE-37 40 922 C2, from DE-39 42 808 C2 or from DE-42 23 730 A1.
  • the straight connector can be inserted into one frame leg part before filling or after filling the frame legs with desiccant, and it can either be inserted into the frame leg part, which still has to be bent for final closure (DE-42 23 730 A1, Fig.6) or in the other frame leg part, which is already bent.
  • the initially still not bent frame leg part - with a square frame - is bent by 90 °, so that to insert the free end or protrusion of the straight connector, the now almost finished frame must be slightly bent or swung open again so that this protrusion becomes Closing the frame towards the frame leg part to be connected to it can also be inserted.
  • the method according to the invention for achieving this object is characterized in that the second frame leg part is partially bent, the first frame leg part is gripped and by the second frame leg part is pivoted away under elastic deformation of adjacent frame legs and, before the completion of the last bend with the second frame leg part still inclined, is pivoted back in the closing direction and the projection of the straight connector is inserted into the frame leg part while the last bending movement of the second frame leg part is being carried out.
  • both frame leg parts are arranged at the beginning of the insertion of the straight connector approximately at a particularly matching angle to a common horizontal or the later end position and at an obtuse angle to each other. This applies in the event that the two frame leg parts are approximately the same length.
  • the connection point is not arranged in the middle of a frame leg, but rather closer to one of the frame corners, there are correspondingly different angles of the frame leg parts at the beginning of the insertion of the protrusion of the straight connector.
  • the straight connector is inserted into the first bent first frame leg part
  • the first frame leg part is pivoted back with the straight connector during the bending process of the second frame leg part and the projection of the straight connector is inserted into this second frame leg part during the last part of the bending process becomes. It is thereby achieved that the protrusion of the straight connector to be introduced can first be moved away from the frame leg part which is in the last bending phase and then moved towards it again, so that it then moves correspondingly deep into this second during the last bending path Frame leg part can be inserted. In the case of an inverted arrangement, the first frame leg part would have to be slid over the straight connector which merely performs a pivoting movement in accordance with the bending movement.
  • the protrusion of the straight connector into the last part of the frame leg can begin at a bend of more than 80 °, in particular 84 ° to 86 °. There is then still 4 ° to 6 ° or possibly a little more, up to 10 °, in the bending path, in order to simultaneously undo the previously swung open of the frame and to insert the straight connector with its overhang into the connection point.
  • the two frame leg parts are arranged at such an obtuse angle to one another that the straight connector can be inserted without any problems despite this angular position, with this angular position then advantageously becoming smaller and smaller in the further course of insertion until the two Align the frame leg parts in the desired manner and accommodate the straight connector in itself to produce the connection point.
  • the insertion movement of the straight connector into the frame leg part can be composed of a pivoting movement and a straight-line sliding movement.
  • the required relative movements between the protrusion of the straight connector and the frame leg part, in which this protrusion is to be inserted can be appropriately coordinated with one another according to the respective requirements and dimensions so that there is no canting.
  • the pivoting movement will predominate, while towards the end the straight-line sliding movement will predominate.
  • pivoting movement of the frame leg part containing the straight connector and the rectilinear sliding movement are provided one above the other or in the last part of the pivoting movement.
  • connection point between the two frame leg parts and their bend or corner with respect to the neighboring frame legs does not remain under a tension opposite to the bending movement, it is advantageous if, after the two frame leg parts are pushed together, the bend of the first frame leg part extends through a right angle to an angle continued somewhat below 90 ° and the second frame leg part also slightly towards the interior of the frame opposite the frame leg adjacent to it is arched over to take into account the elastic springback forces of the frame leg parts in such a way that after opening the holding devices they run at right angles to the adjoining frame legs which are adjacent to them. So the two frame leg parts are somewhat bent over relative to the desired angle, namely by the elastic springback to be expected, so that they spring back into the desired right angle after the bending processes have ended. Although they would possibly maintain this right angle in a different way due to the fixed connection at the connection point, greater security of the desired shape accuracy of the entire frame can be achieved in this way.
  • the method according to the invention uses the last part of the bending path of the frame leg part to be bent last in terms of time and position, in order to be able to insert the straight connector already inserted in a frame leg part more quickly and easily into the other frame leg part without being able to do so
  • the frame has to be swung open or bent open so far that this leads to permanent deformations due to which the closed frame has angular deviations in its corners.
  • the straight connector can be inserted into the other frame leg part with less pivoting of the frame, so that the already bent frame corners retain their angular position and shape.
  • the insertion and insertion of the protrusion of the straight connector is advantageously associated with the last phase of the bending of the frame leg part to be bent last.
  • Such a closure of a spacer frame can thus also be carried out mechanically, without thereby making the finished frame imprecise in terms of its angularity and requiring a corresponding reworking.
  • the device also mentioned at the outset for achieving the object is characterized in accordance with the invention in that means for elastically pivoting back or bending back the already bent frame region opposite the frame leg part to be bent, and also means are provided with which a straight connector inserted in one of the frame leg parts is in the other Frame leg part is insertable and insertable if the frame leg part to be bent is bent so far that the free end of the protrusion of the straight connector and the free end of the frame leg part receiving the protrusion are opposite each other, and that means are provided by which the final bend of the still bending frame legs and pushing together with the straight connector can be performed simultaneously.
  • the insertion and insertion of the protrusion of the straight connector begins before the last bend is completed, it can be swung open and bent open and, above all, bending open while at the same time keeping the already bent frame leg parallel to its end position, so that the closing of the frame and the slight pivoting or bending preceding it do not lead to permanent deformations of the already bent frame corners.
  • the bending of the second frame leg part still to be bent and the pivoting of the frame region opposite this with the first frame leg part can be forcibly coupled or connected in such a way that there are no permanent deformations of the frame and no constraints and the like.
  • time is saved because the last part of the bending process of the second frame leg part is used to carry out the insertion of the protrusion of the straight connector.
  • the device for pivoting the curved frame leg part and the bending device - for the second frame leg part - are mutually controlled in such a way that the protrusion of the straight connector can be inserted simultaneously with the last part of the bending movement and the last insertion movement can be carried out when the both frame leg parts have an obtuse angle with each other. It follows that, with an ever increasing angle between the two frame leg parts, the protrusion of the straight connector is pushed in ever deeper, that is, despite the increasing length of the inserted protrusion due to the simultaneously increasing angle of 180 ° between the two straight connectors, resistance to one such insertion decreases. In other words, a mutual tilting of the parts to be inserted into each other are avoided despite the increasing insertion depth because at the same time the mutual angle is straightened more and more.
  • a particularly useful embodiment of the device with a forced mutual guidance of the last bending movement and the pushing together of the frame leg parts to be connected to one another by the straight connector can be characterized in that the pivotable bending leg for bending the second frame leg part protrudes beyond the free end of the second frame leg part in the use position Extension or continuation has that an openable clamp for grasping the first, in particular the straight connector-containing frame leg part is provided, which is fastened to a pivoting part, the pivoting part having a control surface engaging under the end of the continuation of the bending leg and the free end of the continuation of the Bending leg applied to this control surface at the beginning of the insertion of the protrusion of the straight connector, and that a further pivoting of the bending leg and its continuation ng is forcibly coupled to the swiveling movement of the swiveling device, a too rapid bending movement in relation to the swiveling movement of the swiveling device being blocked by the overlapping or underneath parts.
  • the pivoting device has a control surface and the bending leg has a continuation coming into contact with it, mechanical mutual guidance of the two movements of the two frame leg parts when performing the last bending movement of the second frame leg part and the pushing together with the protrusion of the straight connector is thus mechanical easily achieved.
  • the swivel part which requires a relatively large swivel radius due to the size of the frame, does not have to be attached to a correspondingly long swivel arm, it is advantageous if the swivel part has an arcuate guide, relative to which it can be displaced.
  • a pivotable lever for the pivoting part is thus replaced by the corresponding arcuate guide, the arc can be a circular arc piece to match a pivoting movement, but additionally has the advantage that a curve shape modified from a circular arc could also be selected.
  • a guide rail can be provided as the curved guide, on which the swivel part can engage on both sides with counter-guides, in particular with guide rollers or similar guide elements.
  • the arcuate guide could, however, also be created conversely in that fixed guide elements or guide rollers are provided, relative to which a corresponding arcuate guide part of the pivoting part can be pushed back and forth together with the latter.
  • the guide can have end stops for the pivoting part, whereby the largest opening movement and the return movement for the first frame leg part can be limited. This can prevent the pivoting of the already bent frame area before the protrusion of the straight connector is inserted, thereby preventing permanent deformation of this frame area beyond the elastic limit.
  • the swivel part can - in addition - have a linear guide and a feed device for the clamp which grips the frame leg part and which is oriented approximately parallel to a tangent to the curved guide.
  • a linear movement can be superimposed on the pivoting movement if this is desirable, for example in view of a correspondingly large length of the straight connector.
  • a clamping device can be provided to engage the frame leg against which the second frame leg part can be bent.
  • This clamping device thus has a dual function in that it comprises on the one hand the leg of the bend, against which the frame leg part is to be bent, in particular around an abutment, while also the entire frame is thus held during this bending process and its closing. It would even be conceivable that this clamping device is part of a transport device with which the so far prefabricated frame comes from a filling station for desiccant in order to be finally bent and closed elsewhere, so that the transport time can already be used during this transport route, to carry out the aforementioned closing of the frame completely or at least partially.
  • the pivoting part can be movable or pivotable with its guide transversely to the frame leg parts to be connected or connected and transversely to the course of the guide and can have a drive for this movement or pivoting, so that the connection point of the two connected frame leg parts transversely to their course to the interior of the frame or is movable to the center of the frame.
  • the pivoting movement for merging the frame leg parts and the straight connector can be superimposed by an additional movement, in particular by guiding the pivoting part together with it in its end position now reached, transversely to its original course and thus to the center or the inside of the finished one Frame is moved out so that the previously created connection point, with which the swivel part is still connected via the clamp, is also bent relative to the normal course of this frame leg towards the center or the interior of the frame and thus the bilateral bends of this frame leg assembled from two frame leg parts be bowed over.
  • the overbend is chosen so that after removal of the brackets due to the elastic spring-back forces, the actually desired angle occurs at the corners of the frame and is present.
  • the forced mutual guidance of the movements during the completion of the last part of the bend of the second frame leg part and the pushing together with the straight connector is thus continued somewhat beyond the position in which the two frame leg parts form an angle of 180 ° with one another, i.e. continue in alignment .
  • they are slightly bent over in the opposite direction compared to the angular position at which the insertion of the protrusion of the straight connector begins, namely by the angle by which the connected frame leg parts swivel back against bending due to the material elasticity after the bending device and the clamps have been released .
  • a practically tension-free alignment of the two frame leg parts in the connected position is thus achieved.
  • the frame to be closed can be held by a single clamping device on the frame leg which is immediately adjacent to the last bend to be produced and this clamping device can preferably be adjacent to this last bend at a short distance.
  • this clamping device can preferably be adjacent to this last bend at a short distance.
  • long areas along the frame up to the first frame leg part are available in order to be able to distribute the deformations that occur during the elastic swiveling before the projection of the straight connector is inserted over as many and long areas of the frame as possible, so that permanent deformations are avoided.
  • the point of application of the clamping device for the frame can be less than half the length of the frame leg from the last bend. The closer the clamping device is to the bending point, the better it can absorb the reaction forces occurring during the bending process and the longer areas of the frame are available for elastic deflection when swiveling open before inserting the protrusion of the straight connector.
  • the continuation of the bending leg can have a roller at its free end with which it acts on the guide surface of the pivoting part. Since when this continuation cooperates with the guide surface, not only common pivoting movements but also sliding movements directed towards one another take place, this role can reduce the mutual friction in such a way that the pivoting and insertion of the protrusion of the straight connector is not impaired.
  • the imaginary pivot center of the pivoting part can be arranged on the side facing away from the frame outside of the first frame leg part and laterally on a plane running perpendicularly through the connection point of the frame on the side facing away from the second frame leg part.
  • Such an arrangement of the pivot center means that both the first frame leg part and this Adjacent frame legs and possibly even the further frame legs adjoining in the circumferential direction of the frame are pivoted against each other when opening the frame to take into account the protrusion of the straight connector in such a way that the bending points between them are loaded as little as possible or are possibly deformed. This also results in a particularly favorable return path when pivoting in the opposite direction if the protrusion of the straight connector is inserted.
  • the curvature of the guideway for the swivel part can - as already briefly mentioned - be a circular arc, a tangent to the end of this guideway being arranged approximately parallel to the line on which the closed frame leg is to run in the sense of a collapse of the frame leg parts.
  • the pivoting movement when closing the frame thus ends practically in the direction in which the closed frame leg and its straight connector run.
  • the clamp which is displaceable relative to the swivel part, can be changed with regard to its displacement path by, in particular, adjustable stops, in particular adjustable to straight connectors of different lengths.
  • adjustable stops in particular adjustable to straight connectors of different lengths.
  • a spacer frame can be machined into the machine after it has been bent and possibly filled or before a filling of holes to be made subsequently Frame legs can be closed, without thereby affecting the dimensional accuracy of the individual angles of this frame and making rework necessary.
  • the working speed can be increased because, on the one hand, such machining operations can generally be carried out faster than manual work and, moreover, the last part of the bending of the second frame leg part is already used in time to carry out the assembly with the protrusion of the straight connector.
  • a device designated as a whole by 1 is used to manufacture and in particular to manufacture a spacer frame, designated as a whole by 2, hereinafter also referred to as “frame 2” for insulating glass panes or insulating panes.
  • An at least initially desiccant-free hollow profile is bent to form the frame corners 3 around parallel bending axes and initially left unbent in the area of a last frame corner and left open in the area of a last frame leg 5, which has a connection point 6 between two frame leg parts 7 and 8, in that a first frame leg part 7 is already bent, which is shown in Fig.1, and the other second frame leg part 8 remains unbent at the last corner.
  • This production state is shown in solid lines in FIG. 1, while the further method is shown in dash-dot lines in FIG. 1 and also in the following figures.
  • Continuous, uninterrupted frame legs 4 run between the frame corners 3.
  • the device 1 has a holding device to be described in more detail below for the frame 2 which is already bent at several corners 3 and is initially still open on a last frame leg 5 and, above all, belongs to the device 1 a bending device 11 for bending the last frame leg part 8 previously inserted into one of the frame leg parts, in the exemplary embodiment in the already bent frame leg part 7, also a straight connector 10, which can also be seen in FIG. 1 and also in the following figures, the projection 10a of which is inserted into the other frame leg part, in the exemplary embodiment thus the frame leg part 8 still to be bent should.
  • the bending device 11 for bending the frame leg part 8 and thus for producing the last bend has a bending leg 12, by means of which this frame leg part 8 to be bent can be bent relative to a fixed abutment 9.
  • the bending leg 12 engages on the outside of the frame leg 8 in order to be able to bend it relative to the fixed abutment 9.
  • FIGS. 1 to 8 show this bending leg 12 and the frame leg part 8 acted upon by it in corresponding different positions.
  • “outside" of the frame leg part 8 is meant that side which comes to rest on the finished frame 2 on the outside, that is to say on the circumference of this frame 2.
  • the bending leg 12 engages on the frame leg part 8 with the aid of a holding clip 13, so that a correspondingly precise guidance of the frame leg part 8 is made possible.
  • the device 1 also includes means to be described in more detail for the elastic pivoting or bending of the already bent frame area opposite the frame leg part 8 to be bent, which according to FIG Dash-dotted representation in Figure 1 and the representations made with solid lines of other figures must be moved away from the bending device 11 and the second frame leg part 8 so that this frame leg part 8 does not collide with the overhang 10a of the straight connector 10 already inserted when bending.
  • the same would be necessary if the straight connector 10 were inserted with a protrusion 10a in the frame leg part 8 and then this protrusion 10a could collide with the already bent first frame leg 7.
  • Means are also provided with which the straight connector 10 inserted in the frame leg part 7 and, above all, its protrusion 10a can be inserted and inserted into the other frame leg part 8 if the latter is bent so far that the free end 10b of the protrusion 10a of the straight connector 10 and the free end of the overhang 10a receiving frame leg part 8 opposite each other according to Fig.2, Fig.3 and in particular according to Fig.4 and are very close to each other, so that the straight connector 10 practically into the front opening of the now by a significant part of its total Bend bent frame leg part 8 points.
  • the device 1 includes means by which the final bending of the frame leg part 8 still to be finished and the pushing together with the straight connector 10 can be carried out simultaneously in this last phase of production.
  • the protrusion 10a of the straight connector 10 is arranged practically at right angles to the second frame leg part 8 to be bent last.
  • Figure 2 after a certain bending of the frame leg part 8 and a pivoting back of the Frame leg part 7 with the straight connector 10 reaches a position at which the front opening of the frame leg part 8 and the end 10b of the straight connector 10 are very close and oppose each other such that the free end 10b of the straight connector 10a into the opening of a hollow profile formed frame leg part 8 can occur when the previously pivoted back frame leg part 7 is gradually brought back into its end position.
  • FIGS. 2, 3 and 4 in this intermediate position the second frame leg part 8 to be bent last is not yet bent by 90 °, but rather by approximately 84 ° to 86 °, so that a further bend is to take place.
  • the device 1 is designed so that the second frame leg part 8 is initially partially bent, the first frame leg part 7 is gripped and pivoted away from the second frame leg part 8 with elastic deformation of adjacent frame legs 4 and before the completion of the last bend or corner with the second position still inclined Frame leg part 8 is pivoted back in the closing direction and the projection 10a of the straight connector 10 is inserted into the frame leg part 8 while the last bending movement of the second frame leg part 8 is being carried out.
  • This pivoting back of the frame leg part 7 and the adjacent frame leg 4 in the closed position is shown in an intermediate position in FIG. 6, while the subsequent first closed position can be seen in FIG.
  • the still to be explained device for pivoting the curved frame leg part 7 and the bending device 11 are controlled in such a way that the protrusion 10a of the straight connector 10 can be inserted simultaneously with the last part of the bending movement and the first insertion movement can be carried out when the two frame leg parts 7 and 8 according to FIGS. 2 to 4 have an obtuse angle on the inside of the frame 2 which is only slightly less than 180 °.
  • the pivotable bending leg 12 has an extension 14 or continuation projecting beyond the free end of the second frame leg part 8 in the position of use, which, according to the exemplary embodiment, still has some distance from the bending leg 12 by means of an offset 14a the outside of the frame leg part 8 has.
  • an openable clamp 25 is provided for grasping the first frame leg part 7, which in the exemplary embodiment contains the straight connector 10, and is fastened to a very essential component of the device 1, namely to a pivot part designated overall by 16.
  • This pivoting part 16 has a control surface 17, which engages under the frame on the frame side and engages under the end of the extension or extension 14 of the bending leg 12, over which the extension 14 engages at the start of the insertion movement of the projection 10a, as is the case clearly recognizes in Figures 2 to 4.
  • the free end of the extension or continuation 14 of the bending leg 12 thus acts on this control surface 17 at the beginning of the insertion of the protrusion 10a of the straight connector 10 by coming to rest on it or pressing on it.
  • a further pivoting of the bending leg 12 and its extension or continuation 14 is therefore forcibly coupled to the pivoting of the pivoting part 16. A too rapid bending movement in relation to the swiveling movement of the swiveling part 16 is thereby blocked.
  • the pivoting of the first frame leg part 7 in the closing direction of the frame 2 and the insertion of the projection 10a of the straight connector 10 into the frame leg part 8 can be carried out when the second Frame leg part 8 is still about the angle at which the first frame leg part 7 is arranged by pivoting away from the second frame leg part 8 relative to the end position of both frame leg parts after the completion of the frame 2, so that both frame leg parts 7 and 8 at the start of insertion of the straight connector 10 approximately at a coincident angle to a common direction of extension or the later end position, but in any case are arranged at an obtuse angle to each other.
  • a matching angle results if the connection point of the frame leg parts 7 and 8 is arranged in the middle of this last frame leg. If it is somewhat outside the center, the angles of the two frame leg parts 7 and 8 must differ somewhat from one another at the beginning of the insertion of the overhang 10a of the straight connector 10.
  • the swivel part 16 does not have to be mounted on a correspondingly long swivel arm, it has an arcuate guide 19 in the exemplary embodiment, relative to which it can be displaced.
  • This arcuate guide 19 is designed in the exemplary embodiment as a guide rail on which the swivel part 16 engages on both sides with counter-guides, in the exemplary embodiment guide rollers 20 and on both sides with two guide rollers 20 each.
  • guide rollers 20 could also be provided.
  • the guide rollers 20 it would be possible for the guide rollers 20 to be stationary and for the guide rail to be connected to the swivel part 16 and to be movable relative to the stationary rollers.
  • the guide 19 has two end stops 21 for the swivel part 16, as a result of which the largest opening movement and the return movement for the first Frame leg part 7 are limited. This can prevent the frame leg part 7 from being pivoted too far away from the frame leg part 8 and thereby causing the additional frame legs 4 and the corners 3 which have already been bent to be excessively stressed and possibly permanently deformed from their already manufactured position.
  • the dimensions are matched to the size of the frame 2 and the length of the straight connector 10 provided.
  • the swivel part 16 also has a rectilinear guide 22 and a feed device 23 which is adjustable relative to it, the working cylinder 24 of which can be seen in FIGS. 4 to 8.
  • the clamp 25 which grips the frame leg part 7 can still be adjusted relative to the pivoting part 16, this adjustment movement and the corresponding guide 22 being oriented approximately parallel to a tangent to the curved guide 19, as can be seen in the figures .
  • either a straight-line movement can be superimposed on the pivoting movement or the clamp 25, that is to say the fastening of the pivoting part 16 to the frame leg part 7, can be changed depending on the length of the straight connector 10.
  • a clamping device 26 which also belongs to the device 1 or also to the bending device 11, is provided with a clamping cylinder 27 on the frame leg 4 against which the second or last frame leg part 8 can be bent. It can be seen above all from the dash-dotted representation of FIG. 1 or also from FIGS. 2 and 3 that pivoting or bending back of the frame leg part 7 with these adjacent frame legs is easily possible with the aid of the pivot part 16 and the resulting elastic deformations can distribute the largest possible peripheral area of the frame 1 because it hangs freely or remains free.
  • the frame 2 which is still open on one side, is thus clamped near the bending point of the second frame leg part 8 to the frame leg adjacent to it with the aid of the clamping device 26, while adjacent to it the bending leg 12 engages the frame leg part 8 and bends it, while a further clamping device, namely, the clamp 25 is attached to the first frame leg part 7, so that as large a part of the frame 2 remains free in between.
  • frame leg 7 is composed, as it were, of a pivoting and a sliding movement, which can best be simulated by a pivoting movement with a large radius of curvature and adapted to the requirements, the position of the pivoting center playing a role and being chosen such that the last part of the pivoting movement is oriented approximately in the direction of the last frame leg 5 formed.
  • the insertion movement of the straight connector 10 into the frame leg part 8 can be composed of a swiveling movement and a straight-line sliding movement. This could be achieved by a corresponding shaping of the guide 19, the last part of this guide path in particular running parallel to the last produced and closed frame leg 5. However, if the tangent to the last part of the pivoting movement runs parallel to this frame leg 5 after its completion, a superimposed linear movement can be dispensed with. In addition, the feed device 23, with which a certain pressure effect can be exerted on the connection point 6, would also be available for such a superimposed linear movement.
  • a further method step is provided in the exemplary embodiment, according to which, after the two frame leg parts 7 and 8 have been pushed together, the bending of the second frame leg part 8 continues beyond a right angle to an angle somewhat below 90 °, and the first frame leg part 7 likewise is bent over to the frame leg 4 adjacent to it towards the inside of the frame, so that it also encloses a smaller angle than 90 ° with its neighboring frame leg 4 in order to take into account the elastic spring-back forces of the frame leg parts in such a way that they open after opening Holding devices run at right angles to the adjoining frame legs that are adjacent to them.
  • the overbend is chosen according to the material and dimensions so that after the completion of the frame 2 and its removal from the device 1, the desired angles of 90 ° are present at the four corners - in the case of a rectangular frame.
  • the device 1 is designed to carry out this additional method step in that the pivoting part 16 is movable or pivotable with its guide 19 transversely to the frame leg parts 7 and 8 to be connected or connected and transversely to the course of the guide 19 and a drive 28 in Form of a working cylinder 29 with transmission linkage 30 for this movement or pivoting.
  • the connection point 6 of the two interconnected frame leg parts 7 and 8 can be moved transversely to the course thereof towards the interior or towards the center of the frame after completion of this connection according to FIG. 7, as is clearly shown in FIG. 8 and in the third method step of FIG is.
  • FIG. 7 Frame legs are bendable.
  • the overbend is chosen so that the elastic restoring forces then take the two frame leg parts 7 back into their final position Spring back 90 ° relative to the neighboring frame legs, so that a precisely rectangular frame 2 with four corners of 90 ° each can then be removed.
  • the frame 2 to be closed is practically held by a single clamping device 26 on the frame leg 4 which is directly adjacent to the last bend to be produced and the abutment 9 therefor.
  • This clamping device 26 is adjacent to the last bend at a short distance.
  • the point of attack of the clamping device 26 from the last bend is less than half the length of the frame leg 4, on which it engages.
  • this extension 14 of the bending leg 12 has a roller 32 at its free end, with which it acts on the guide surface 17 of the swivel part 16, or with which the extension 14 passes over this guide surface 17 can slide or roll.
  • this imaginary center of rotation of the swivel part 16 is arranged on the side facing away from the frame outside of the first frame leg part 7 and at the same time on the side of a plane running at right angles through the connection point 6 of the frame 2 and through the plane of the drawing on the side facing away from the second frame leg part 8. So there is a pivot center, which is located approximately in the right half of the frame or below the right half of this frame when one for example, starting from Figure 1 and the pivoting part 16 is arranged above and the frame 2 hangs underneath.
  • the curvature of the guide 19 or the guide rail forming it for the swivel part 16 is a circular arc, a tangent to the end of this guide path facing the second frame leg part 8 in the sense of a collapse of the frame leg parts being arranged approximately parallel to the line on which the closed frame leg 5 should run.
  • the left end stop 21 in the drawing is arranged in such a way that the swivel part 16 has just reached a maximum height and from there can only be moved down and swiveled to the right. This means that when this left stop 21 is reached, the swivel part 16 also practically performs a movement oriented in the direction of the later frame leg 5, i.e.
  • the straight connector 10 and its projection 10a are pressed in the direction of this frame leg 5 or possibly even a very short piece is moved.
  • the curvature of the guide 19 is thus oriented such that the pivoting movement of the frame leg part 7 has just ended when the frame 2 is closed, when the appropriate end position has been reached, as shown in FIG. In contrast, the additional bending mentioned above can then be carried out.
  • the clamp 25, which is displaceable relative to the pivoting part 16, can be changed in the exemplary embodiment with regard to its displacement path by, in particular, adjustable stops 33 and can be adjusted to straight connectors 10 of different lengths by such stops 33 which can be adjusted by means of working cylinders 34, as has already been mentioned above.
  • the second frame leg part 8 is bent and the frame 2 is pivoted or bent so far about a pivot axis running parallel to the bending axes that the projection 10a of the straight connector 10 can be inserted into the other or second frame leg part.
  • This introduction of the projection 10a begins when the last to be bent frame leg part 8 is over a large part of its bend, but not yet fully bent, so that the final bending and the pivoting and insertion of the straight connector in the last part of this bending movement take place simultaneously, in an advantageous manner Way the angle between the overhang 10a and the frame leg part 8 receiving it is increasingly brought into line with increasing insertion depth until both parts have a corresponding orientation in the closed position.
  • the frame 2 and its frame leg 4 are each shown approximately parallel to the edges of the drawing sheets. However, it is preferred that in reality the frame 2 and the device 1 acting thereon with the bending device 11 and the pivoting part 16 are rotated somewhat clockwise, for example by approximately 45 °. 1 shows a dashed line V, which is intended to mean a vertical, with respect to which the frame leg parts 7 and 8 are each approximately at 45 °, as is the case with the devices according to DE-37 40 922 C2 or DE-39 42 808 C2 is known. If the straight connector 10 is provided with a continuous opening or a U-shaped cross section with a continuous longitudinal cavity, this filling with drying agent can take place through the straight connector already inserted.
  • the frames 2 could be at least partially filled with desiccant and then completed in this position or by the holding devices and clamps 25 and 26 in this orientation in before the completion of the above description in the above-mentioned position rotated 45 ° clockwise from the illustration the workstation in which they are when the frame 2 is finally closed as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP95100596A 1994-01-29 1995-01-18 Procédé et dispositif pour la fabrication d'un cadre espaceur pour vitrages isolants Expired - Lifetime EP0665357B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402726A DE4402726A1 (de) 1994-01-29 1994-01-29 Verfahren und Vorrichtung zum Herstellen eines Abstandhalter-Rahmens für Isolierglasscheiben
DE4402726 1994-01-29

Publications (2)

Publication Number Publication Date
EP0665357A1 true EP0665357A1 (fr) 1995-08-02
EP0665357B1 EP0665357B1 (fr) 1998-06-17

Family

ID=6509026

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Application Number Title Priority Date Filing Date
EP95100596A Expired - Lifetime EP0665357B1 (fr) 1994-01-29 1995-01-18 Procédé et dispositif pour la fabrication d'un cadre espaceur pour vitrages isolants

Country Status (3)

Country Link
EP (1) EP0665357B1 (fr)
AT (1) ATE167548T1 (fr)
DE (2) DE4402726A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826439A1 (fr) * 1996-09-02 1998-03-04 Rudolf Tschopp Procédé de pliage d'un tube, dispositif de mise en oeuvre du procédé ainsi que pièce de coin réalisée d'après le procédé
WO2006092314A1 (fr) * 2005-03-04 2006-09-08 Karl Lenhardt Procede de production d'une entretoise destinee a des vitres isolantes
WO2020070245A1 (fr) 2018-10-04 2020-04-09 Lisec Austria Gmbh Procédé et dispositif de fabrication d'un cadre d'écartement pour verre isolant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249946A2 (fr) * 1986-06-19 1987-12-23 Karl Lenhardt Procédé et dispositif pour la fabrication d'un cadre d'espacement pour vitres isolantes
DE4223730A1 (de) * 1992-07-18 1994-01-20 Bayer Isolierglasfab Kg Verfahren und Vorrichtung zum Füllen und Herstellen eines Abstandhalter-Rahmens für Isolierglasscheiben

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740922A1 (de) * 1987-12-03 1989-06-22 Bayer Isolierglasfab Kg Verfahren und vorrichtung zur herstellung eines abstandhalter-rahmens
DE3942808A1 (de) * 1989-12-23 1991-06-27 Bayer Isolierglasfab Kg Verfahren und vorrichtung zum herstellen eines abstandhalter-rahmens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249946A2 (fr) * 1986-06-19 1987-12-23 Karl Lenhardt Procédé et dispositif pour la fabrication d'un cadre d'espacement pour vitres isolantes
DE4223730A1 (de) * 1992-07-18 1994-01-20 Bayer Isolierglasfab Kg Verfahren und Vorrichtung zum Füllen und Herstellen eines Abstandhalter-Rahmens für Isolierglasscheiben

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826439A1 (fr) * 1996-09-02 1998-03-04 Rudolf Tschopp Procédé de pliage d'un tube, dispositif de mise en oeuvre du procédé ainsi que pièce de coin réalisée d'après le procédé
WO2006092314A1 (fr) * 2005-03-04 2006-09-08 Karl Lenhardt Procede de production d'une entretoise destinee a des vitres isolantes
US7987577B2 (en) 2005-03-04 2011-08-02 Karl Lenhardt Method for providing an oblong shaped piece and for inserting said shaped piece into a hollow section bar from which a spacer for insulated glass panes is formed
WO2020070245A1 (fr) 2018-10-04 2020-04-09 Lisec Austria Gmbh Procédé et dispositif de fabrication d'un cadre d'écartement pour verre isolant

Also Published As

Publication number Publication date
DE59502547D1 (de) 1998-07-23
EP0665357B1 (fr) 1998-06-17
DE4402726A1 (de) 1995-08-10
ATE167548T1 (de) 1998-07-15

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