DE3024736A1 - Right-angle joins in window seal extrusion - produced by mitre cutting hot and bringing edges together at angle - Google Patents

Abstract

Corner joins in extruded profiled seals for windows, doors etc are produced using two profiled fixtures on a plate, each has a lower shaped groove to take the profile and a hinged cover, and a welding device moves to/from these fixtures. The fixtures are set up on the plate with grooves aligned together and with their mirror images along the sides towards each other; their edges form an included angle open towards one side of the setup and at an angle to the original groove. The one fixture pivots round when its edge is to be applied to that of the other fixture; the welding device has bent blades fitting the angle between the fixtures, they pivot into position above those edges; they also have one cutting edge. Simple operation, produces perfect mitre joint faces for welding.

Description

DEVICE FOR PRODUCING CORNER JOINTS

OF SEALING PROFILES FOR WINDOWS, DOORS OR THE LIKE.

DEVICE FOR PRODUCING CORNER JOINTS OF SEALING PROFILES FOR WINDOWS, DOORS OR THE LIKE.

The invention relates to an apparatus for producing Corner connections of sealing profiles for windows, doors or the like., When on a base plate two profile holding devices, each of which has a lower shape with a receiving groove for the extruded profile to be held and one for covering or opening the receiving groove has pivotable cover, and a relative are attached to the mounting devices pivotable welding device.

For sealing between the frame and casement of windows, from For door leaves or the like, it is necessary to have sealing profiles running around the frame to accomplish.

In order to obtain a complete seal, care must be taken that that the circumferential sealing profile strand is also self-contained, i.e. that to the Frame corners the profile ends that meet there are also connected to each other. For this purpose, those in the corner areas abutting ends of the profile strands each by means of a miter cut cut so diagonally that the miter points of two different Directions of incoming profiles. lie against each other and then by gluing, welding or (in the case of rubber profiles) vulcanizing.

To produce such corner connections of sealing profiles by means of It was previously necessary to weld the profile ends together, initially in one Cutting or

Punching device to generate the ends of the individual profile strands the desired miter bevel at an angle, then in one Separate operation in terms of device technology on a suitable welding device to weld the ends of such punched profile strands together. One perfect connection of the sealing profiles in the corner areas of the frame proved to be difficult in many cases, whereby the occurrence of slits, uneven joints among other things not only the sealing effect of the seal, but can also significantly reduce their thermal and sound insulation. To such trouble To avoid it, it is particularly important that the miter cuts at the profile end points be carried out particularly carefully and evenly and that the Welding in the entire welding area, if possible under uniform conditions can be done. Only if these requirements are met can a time-consuming, costly and labor-intensive reworking of such corner connections is avoided will.

A known welding device for welding the end points of Sealing profiles, especially for corner connections, is described in DE-GM 79 11 997. The two mitered cut in an upstream work step Profile ends are in this known device in two profile holding devices inserted, which are arranged on a base plate on which there is also a welding device with a welding ax. The two mounting devices are in so arranged at an angle to each other and their end faces corresponding to the miter angles Aligned at the profile end points so that after inserting the profiles the Bracket devices which are displaceable towards one another at an angle in the longitudinal direction of the profile can be brought into contact with one another in such a way that the profile end points to be connected are exactly together. Furthermore, a welding device with a fixed Welding hatchet is provided on which the two mounting devices can be displaced in this way are that the miter surfaces to be connected to each other at the profile ends of both sides of the welding hatchet can be pressed against it. Through this the corresponding end points of the two profile ends are sufficiently heated, so that then by removing the holding devices from the welding ax and by immediately manually pressing the two holding devices together (and thus also the heated profile end points to each other) the desired welded connection can be produced. This known device leaves with correct operation although a satisfactory welding of the ends of sealing profiles, in particular for the production of corner connections, too, but this requires a remarkable one mechanical use by not only having a relatively large base plate with the holding devices can be moved with respect to the welding hatchet, but also the two holding devices in turn opposite the base plate carrying them have to be movable. These multiple, superimposed shifting movements also require the operator to pay attention to the required Correct coordination of the individual movements in relation to one another. For example, make sure that the two miter sections of the profile ends receive Holding devices not pushed together completely before they are brought up to the welding ax are allowed, because then an insertion of the welding ax between them (for heating the end faces of the profiles) is no longer possible. So the operator must make sure that you use the two mounting devices after inserting the profiles shifts against each other only so far that a sufficient gap remains to during the displacement with respect to the fixed welding ax, an introduction of the same to allow between the miter sections. Furthermore, the known device can only be used as a welding device; the previous slant Cutting the profile ends to produce the exact miter cut required is not possible with this known device.

Here the invention seeks to provide an improvement and a device develop, which are easier to use, not just a weld, but also a flawless previous production of the miter cut for both of them allows to be connected profile end points. According to the invention, this is at a Device of the type mentioned achieved in that the two holding devices on the base plate with other aligned grooves are arranged side by side and mirror images on their facing sides Terminating edges extending to each other and obliquely to the direction of escape of the receiving grooves have, which open to one side of the holding devices Include angles that continue to be one of the two mounting devices the base plate to rest its sloping edge to the edge of the another mounting device is attached pivotably about a pivot axis, and that the welding device is pivotable along the height of the inclined end edges and pivotable between them, shaped according to the angle between them Has welding blade which is also provided with a cutting edge. By the device according to the invention is the production of hot-welded corner joints very easy: the aligned alignment of the grooves in both mounting devices enables a single profile strand to be inserted into both and after closing the pivotable cover is fixed in a fixed position. The two mounting directions lie next to each other in such a way that they result on their facing sides End edges running obliquely to one another turn towards one of their sides Release the opening angle into which the welding element designed as a welding blade can be swiveled in. The welding blade, preferably in the base plate arranged sunk and pivoted out of the base plate by means of a foot lever is, then with its exactly the angle between the two mounting devices adapted shape swiveled up from the base plate (or from above between the Holding devices introduced), in this operation the cutting edge the welding blade a substantially triangular section from the extruded profile cuts out and at the same time early at the end of each of the two mounting profiles creates the desired miter cut on the profile.

The originally continuous profile strand is due to this punching process now divided into two sections, each of which ends in one of the profile pieces. The cutting process creates on the facing, sloping to the longitudinal axis of the profile The desired precise miter cut. Since the cutting blade here also functions as a welding ax at the same time exerts, it means that during and after the cutting out by the cutting element the two then existing profile sections each cut off at an angle Ends are heated (to temperatures to choose depending on the material but must always be above 1000 C to ensure a clean weld). After this is done (with the heating facilitating the cutting process), the welding blade is folded out again from the plane of the profile strand. In Direct connection to this is then only a simple manual (or automatic feasible) pivoting of the pivotable holding device is required in such a way that that this with its sloping side edge to the sloping side edge of the other Bracket device comes to the plant. Is this easy and quick to execute Rotary movement takes place, then the ones that have just been heated by the hot welding blade lie Interfaces of the two profile sections to one another in the hot state. A pressure the pivotable mounting device to the other then provides the desired Welded connection, the simplicity of the rotary movement to be carried out whatsoever Operator error allows.

Preferably only one mounting device can be pivoted, while the other is fixed to the base attached standing is, whereby the operator only a rotation of a mounting device effect and only have to exert the contact pressure on this.

A preferred embodiment of the device according to the invention consists in the fact that the welding blade is pivoted in as well as in pivoting direction is each provided with a cutting edge. This makes it possible that to the Cutting and heating process, the welding blade only ever moves a relative movement of Execute below the inserted profile strand upwards (or vice versa) must and pivoting back into the starting position is no longer necessary. Because the countermovement of the welding blade then becomes a miter cut for exploited the subsequent production of a corner connection.

To get the required or desired profile lengths according to execution to ensure the miter cut immediately, is preferably on the base plate one from the pivotable mounting device in the direction of escape of the Mounting grooves extending, laterally offset from the mounting groove measuring rod attached. This is, again preferably, together with the pivotable mounting device pivotable and, in a further advantageous embodiment, has a profile clamping bracket or a profile tension clamp or similar, by means of which this can be done after inserting the profile strand sealing profile (and after the length has been adjusted according to the information on the measuring rod) can be done on the measuring stick. This results in a positionally fixed alignment of the profile strand running out of the pivotable mounting device as well ensured during the pivoting movement.

It is also advantageous if the cutting edge or

the cutting edges on the welding blade are designed as bevels.

The welding blade is also advantageously heatable Protractor formed and consists, again preferably, of steel or copper with a layer of Teflon, silver or chrome that makes it easier to wipe off which allows welding residues after each miter cut. Also preferably the profile clamp is slidably mounted on the measuring rod.

In an advantageous embodiment of the device according to the invention a pivoting device is provided, which automatically after pivoting back the Welding blade from the cutting plane the pivoting of the pivotable mounting device, the application of the end edge to that of the other mounting devices on one another executes. Furthermore, the plane of the cutting edges is preferably inclined to the direction of cutting movement employed there. The device according to the invention has a particularly simple one It can be built on and is even by completely untrained people without the risk of incorrect operation Operators can be operated safely. Moving different things against each other Individual elements, also in the context of superimposed shifting movements, is also not required in the device according to the invention. Besides the great advantage that the precise manufacture of the Miter cuts as well as the execution of the hot welding process on one and the same device can take place, with an unclamping and renewed clamping of the profiles (with possible irregularities in the alignment to one another) is certainly avoided. Once the profile strand has been inserted, it is fixed in position Position within which he during the individual processing steps remains and from which the very precisely and precisely manufacturable miter cuts in a precisely defined and fixed welding position must be forcibly transferred.

Furthermore, a stripping device is preferably provided, by means of which the welding device is cleaned when swiveling out of the welding layer. This prevents contamination of the welding surface as a result of adhering (melted) Mechanically remove the profile material immediately after welding.

Likewise preferably, this removal of such undesirable Deposits on the welding surface, e.g. by immersing the welding knife in suitable chemical solvents or by briefly heating the Welding knife can be made at very high temperatures.

In the following, the invention is illustrated in principle by way of example with reference to the drawing explained in more detail.

1 shows a plan view of a device according to the invention with inhaled profile strand; Fig. 2 shows the side view of a holder part a device according to the invention with inserted profile strand and closed Lid; 3 shows a detail section according to A-A from FIG. 1; Fig.. 4 is a plan view on the device according to the invention after rotating a mounting device (welding location); 5 shows a principle view of a cutting blade with an inclined Cutting edge plane.

In the device shown in Fig. 1 are on a base plate 1 next to each other the bracket parts 2 and 3 attached. In this is an extruded profile 4 made of PVC or another suitable flexible and weldable material in a receiving groove 5 (FIG. 2) formed in each holder part 2 and 3 is inserted. This holding part 2 or 3, as shown in FIG. 2, consists of a lower mold 14, which is preferably made of aluminum or synthetic resin. In this sub-form 14, the receiving groove 5 is let in for the sealing strip. On the top the lower mold 14 is pivotable upwards, a cover 15 is attached, which is also is preferably made of aluminum or synthetic resin. In the representation according to Fig. 1 are after the insertion of the profile 4, the two covers 15 of the holding devices 2 and 3 for fixing the profile strand in position within the mounting devices closed. While the mounting device 2 is rigidly attached to the base plate 1 is, the mounting device 3 is mounted about a pivot axis 8 so that they in the direction of rotation indicated by an arrow in Fig. 1 against the other Mounting device 2 can be pivoted up to the system (cf. pivoted Representation in Fig. 4). The juxtaposed holding devices 2 and 3 each have two mirror images on their mutually facing sides mutually extending sloping edges 6 and 7, respectively. These lie in two levels, the intersect in the axis of rotation 8 of the mounting element 3, this axis somewhat is arranged offset to the side of the profile strand 4. The sloping side edges 6 and 7 of the mounting devices 2 and 3 then extend from the axis of rotation 8 at an angle that opens towards the profile strand up to the side edges of the Profile devices 2 and 3 out, which are also at a lateral distance from the Profile strand 4 run.

A welding blade 9 in the form of a protractor, which is provided with a Teflon or chrome layer 12 (see also illustration according to Fig. 3) and which has a cutting edge 11 on its upper edge, can from below be pivoted up from the base plate 1 to the between the two beveled edges 6 and 7 extending section of the profile strand 4 to be punched out (cf. also Fig. 3). When swiveling the welding blade 9 out of the base plate 1 into the cutting plane the middle section of the profile strand 4 is thus first cut out (and suitably thrown off, which is not shown) and at the same time by the heated The outer surface of the welding blade 9 is clamped in the holding devices 2 and 3, cut end points of the profile 4 brought to the required temperature, which is above 1000C, with PVC materials preferably up to 1800C. After swiveling out the welding blade 9, e.g. back down into the base plate 1, is then by the operator the pivotable mounting device 3 (in the case of immernpch closed lid) together with the measuring rod 10 and the protruding part of the profile strand 4, the end of which for precise position fixing at the end of the measuring rod by means of a clamping device 13 is clamped, pivoted into the position shown in Fig. 4: in this position the heated interfaces of the two sections of the profile strand 4 come together in the correct alignment to the system and are pressed against each other welded together in the exact position.

Instead of being swiveled into the base plate, it could be downwards the welding blade can of course also be swiveled upwards, whereby they in this case, however, must be swiveled up so far that they insert of the profile strand 4 in the holding devices 2 and 3 and the pivoting the Mounting device 3 is not obstructed by the operator. Will the welding blade as described in the illustration of FIG. 1, down into the base plate 1 swiveled in, then it is advisable to use the welding blade 9 by the operator to operate with the foot operated swivel device.

In this case, the base plate 1 is preferred to be more suitable Small standing table is designed, which is provided with the necessary pedals at the bottom and houses the mechanism for moving the welding blade 9 up and down. However, if the device is to be versatile and easy to transport, it is recommended to swivel the welding blade upwards (approx in the form of a rotary pivoting upwards out), whereby the pivoting mechanism can then be attached to the top of the base plate 1 and its design as a standing table or similar is no longer required.

The measuring plate 10 can, however, also be non-pivotable on the base plate 1 be attached. Here, the profile tension clamp 13 is displaceable on the measuring plate stored: After inserting the profile strand, it is first up to the desired pulled out, clamped, cut and welded along the length aligned with the measuring rod. Then the holding devices 2 and 3 are opened again, the welded one Corner connection removed, the profile 4 with the corner connection again accordingly the desired length on the side of the measuring stick, stretched again, cut and welded. This can be continued until the sealing frame is completed become: for the last frame corner then only the two remaining ones are needed butt ends of the strand inserted into the device, cut there on a miter and welded to the finished frame. This is based on an endless strand the current production too closed sealing frame easily possible.

Finally, FIG. 5 shows a basic side view of a Welding blade 9 is shown in which the plane in which the angled cutting edge 11 is arranged obliquely to the direction of movement (arrow) during the cutting process by one Angle a is employed, which is selected to be less than 900. This increases the effort facilitated during the cutting process by not simultaneously cutting the cutting edge 11 over their entire cutting length comes into cutting contact with the extruded profile 4, but as the cutting path increases, the full cutting length is only performed. Got it first the foremost, the profile strand facing (in Fig. 5: the top) tip the welding blade to the profile strand, the cutting process starts there locally, and as the cutting path increases (i.e., the stroke of the welding blade 9), the cut becomes on the profile strand 4 only ever carried out in a small local cut area, which allows the use of only small forces.

In order to move the welding tangs 9 out of the welding position on the Welding blade 9 still adhering sealing profile material from the welding blade 9 and to avoid it sticking to it, it is advisable to provide a suitable (not shown) mechanical scraper device, the material that may automatically adhere when the welding blade is swiveled out strips off. Any suitable device in the form of its own scraper, Scratches or similar are used. Alternatively, the welding blade could also be immersed 9 in a suitable chemical solvent or a short-term heating the welding blade to a very high temperature (during the pivoting process) are provided.

L e r s e i t e

Claims (14)

PATENT CLAIMS 1. Device for producing corner connections of sealing profiles for windows, doors or the like. In which on a base plate two profile holding devices, each of which has a lower mold with a receiving groove for the extruded profile to be held and one for covering or opening the receiving groove Has pivotable cover, as well as a relative to the holding devices movable welding device are attached, d a d u r c h e k e n n z e i c h n e t that the two mounting devices (2, 3) on the base plate with mutually aligned receiving grooves (5) are arranged side by side and on their sides facing each other, mirror images of each other and at an angle to the direction of escape of the grooves (5) running between them one after one side of the mounting devices (2, 3) forming angled end edges (6, 7) have that one of the two mounting devices (3) on the base plate (1) to apply its sloping end edge (7) to the (6) of the other mounting device (2) is mounted pivotably about a pivot axis (8), and that the welding device a length along the height of the inclined end edges (6, 7i and pivotable between them, shaped according to the angle between them Has welding blade (9) which is also provided with a cutting edge (11) is. 2. Apparatus according to claim 1, characterized in that the other Holding device (2) is fixedly attached to the base plate (1). 3. Apparatus according to claim 1 or 2, characterized in that the welding blade (9) both in the swiveling in and in the swiveling out direction with a Cutting edge (11) is provided. 4. Device according to one of claims 1 to 3, characterized in that that on the base plate (f) one of the pivotable mounting device (3) from in the direction of escape of the receiving grooves (5) extending laterally to the receiving groove (5) offset measuring rod (10) is attached. 5. Device according to one of claims 1 to 4, characterized in that that the cutting edge (s) (11) are designed as a bevel (s) on the welding blade (9). 6. Device according to one of claims 1 to 5, characterized in that that the welding blade (9) arranged sunk in the base plate (1) and means a foot lever can be swiveled out of the base plate (1). 7. Device according to one of claims 1 to 6, characterized in that that the welding blade is designed as a heatable protractor (9). 8. Device according to one of claims 1 to 7, characterized in that that the welding blade (9) is made of steel or copper and on its the inclined End edges (6, 7) facing surface with a support (12) made of Teflon, Silver or chrome is provided. 9. Device according to one of claims 1 to 8, characterized in that that a pivoting device for automatically applying the terminating edge (7) of the pivotable mounting device (3) to the (6) of the other mounting device (2) provided after the welding blade (9) has been pivoted back out of the cutting plane is. 10. Device according to one of claims 4 to 9, characterized in that that on the measuring rod (10) a profile clamp or a profile clamp (13) for the adjacent sealing profile strand (4) is attached. 11. Device according to one of claims 4 to 10, characterized in that that the measuring rod (10) together with the pivotable mounting device (3) is pivotable. 12. Device according to one of claims 1 to 10, characterized in that that the measuring rod (10) is firmly attached to the base plate and the profile clamping bracket or the profile tension clamp (13) can be moved on the measuring rod. 13. Device according to one of claims 1 to 12, characterized in that that the cutting edge (11) of the welding blade (9) lies in a plane in the direction the cutting movement by an angle less than 900, preferably in the range between 450 and 60 °, is inclined. 14. Device according to one of claims 1 to 13, characterized in that that a stripping device is provided by means of which the welding blade (9) is cleaned when swiveling out of its welding position.