EP3020909B1 - Method for in-situ manufacturing of a corner connector angle element in window and door hollow profiles and corner connector moulding element for same - Google Patents

Method for in-situ manufacturing of a corner connector angle element in window and door hollow profiles and corner connector moulding element for same Download PDF

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Publication number
EP3020909B1
EP3020909B1 EP15192913.0A EP15192913A EP3020909B1 EP 3020909 B1 EP3020909 B1 EP 3020909B1 EP 15192913 A EP15192913 A EP 15192913A EP 3020909 B1 EP3020909 B1 EP 3020909B1
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EP
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Prior art keywords
profile
corner connector
hollow
connector moulding
moulding element
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EP15192913.0A
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German (de)
French (fr)
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EP3020909A1 (en
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Alexander Bechtold
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Veka AG
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Veka AG
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    • 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
    • E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
    • E06B3/9612—Corner joints or edge joints for windows, doors, or the like frames or wings by filling in situ the hollow ends of the abutted frame members with a hardenable substance

Definitions

  • corner welded connector elements When connecting two mitered hollow profile sections, in particular plastic hollow profiles for the construction of window and door frames or window and door leaves, so-called corner welded connector elements are inserted into the exposed ends of the plastic hollow profile sections.
  • the welding process which is carried out to connect the plastic hollow profiles, not only are the profile webs of the plastic hollow profile pressed against one another, which are very narrow, connected to one another, but they also become essential in the area of the cut surface of the profile Larger corner welding connector elements are welded together, so that as a result an angle element consisting of two corner welding connector elements is created within the cavities of the plastic hollow profile, which clearly reinforces the corner connection formed in this way.
  • Corner connector shaped elements are pushed into a hollow chamber of the respective plastic hollow profile section and are fixed in the hollow profile section by injection of adhesive from the exposed plane of the miter cut, so that a welding mirror on the corner connector shaped element is positioned flush in the miter plane. With the welding of the thermoplastic plastic hollow profile sections, the corner connector shaped elements are also connected to one another, so that they together form an angular corner connector element arranged in the corner of the frame or the sash. If frames or sashes are mechanically stressed, the corner connector angle elements only need to absorb part of the forces, since the profile webs surrounding them are also welded to the profile webs of the adjacent hollow profile, so that forces can also be transmitted over them.
  • a prefabricated corner bracket for window or door hollow profiles is known, which is self-supporting and which is connected via an adhesive connection to the miter-cut hollow profiles that are subsequently pushed onto it.
  • this corner bracket In the assembled state, there remains a gap between this corner bracket and the walls of the hollow profiles, which would be filled with sealant / adhesive.
  • sealant / adhesive One-component or two-component PUR adhesives or epoxy adhesives, for example, could be used as the sealant / adhesive. If the hollow profiles are at least partially made of thermoplastic material, this corner bracket cannot be used, as it prevents welding in the miter plane as well as pure recycling, since the thermoset sealants and adhesives can no longer be removed afterwards.
  • the object of the present invention is to provide a method for the in-situ production of a corner connector angle element on mitered window and door profiles, by means of which a mechanically resilient profile connection is also made possible of metal profiles and in particular of composite profiles made of plastic and metal.
  • a corner connector casting mold element which is suitable for carrying out the method is provided in claim 8.
  • the corner connector casting mold elements used according to the invention are not prefabricated sub-elements that are combined to form a corner connector angle element by simply joining them, but that they together with the surrounding walls of the profile chamber form mold shells to create a corner connector angle element by means of plastic injection molding from thermoplastic solid material directly within a cavity in the frame or sash profiles.
  • the corner connector casting mold elements used become part of the corner connector angle element indirectly through adhesion and / or superficial fusion with the injected plastic melt; however, they are not the only static determinants in this network.
  • Statically effective in the corner area of the profile sections connected with such a method is predominantly the corner connector angle element made in-situ from two casting mold elements and the injected plastic compound.
  • a production "in-situ” means that the corner connector angle element according to the invention is not prefabricated in a separate manufacturing process and that two prefabricated halves are not simply glued together before the assembly of the profile pieces, but that the corner connector angle element within the cavity the already correctly positioned plastic hollow profile sections is produced, which is completely invisible from the outside.
  • thermoplastic material tends to shrink when it cools, but at the same time is prevented from doing so by a material connection and / or form connection with the surrounding mold elements and profile walls. Therefore, suitable material pairings are preferably used for the thermoplastic material of the plastic hollow profiles and for the plastic compound to be injected, with which this effect can be used particularly well.
  • the result is frozen shrinkage stresses in the corner connector angle element produced in-situ. If a window or a door produced with the method according to the invention is heated during use, for example by strong solar radiation, the shrinkage stresses relax in part. However, the remaining portions of the inherent shrinkage stresses ensure that the profile cut surfaces are held together in the miter plane, in particular also on the metal profile half-shells arranged on the outside. This prevents the miter joint from opening when heated.
  • the hollow chambers of the profile are each completely blocked off by the sealing shoulder present on the corner connector casting mold element, so that the volume to be ejected is limited.
  • the inlet opening can, for example, lie in the area of the miter plane.
  • outlet openings should be provided, each of which is located in the rear areas of the hollow chambers delimited by the sealing sections, facing away from the miter plane. These ensure, on the one hand, that the air can completely escape during injection and that air bubbles trapped in the corner connector are avoided.
  • the outlet openings it can be achieved that the highly viscous plastic melt flows into the outlet openings and a form-fitting anchoring of the corner connector casting mold element on the hollow profile section is effected there as it solidifies, but that on the other hand not too much plastic melt into the adjacent hollow chambers or flows to the outside.
  • Figure 1 shows a corner connector casting mold element 10, which is preferably formed in one piece from a block body 1 made of plastic. This has lateral border webs 1.1, but is hollow in between and open to the bottom in order to form a cavity 2 together with the adjoining profile walls, into which the plastic compound can be injected.
  • the block body 1 has at its one, in Fig. 1 rear end several parallel sealing collars 4 in order to completely shut off the cross section of a hollow profile chamber into which the corner connector casting mold element 10 can be inserted.
  • the cross section of the cavity 2 which is open in the front area, is also completely closed off, preferably via a wall on the rear end face 6.
  • the block body is beveled in accordance with the miter angle of a miter plane G.
  • the block body 1 On its outer circumferential sides, the block body 1 has a plurality of spacer elements 5 bridging the distance from the wall of the profile hollow chamber and can also serve to anchor a plastic compound injected into the profile hollow space 2.
  • a centrally arranged hollow profile chamber 3 can be provided in the cross section of the cavity 2 in order to act as a displacer for the plastic melt to act. It can also be deliberately provided, for example by choosing suitable wall thicknesses, to make the profile hollow chamber 3 more easily deformable, so that in the event of an overpressure during injection, this results in a significant increase in temperature due to the injected plastic melt, initially the walls of the hollow profile chamber 3 must be deformed, but not the adjoining walls of the window or door profile into which the corner connector casting mold element 10 is inserted.
  • Fig. 2 shows a positionally correct combination 10 ′ of two corner connector casting mold elements 10, which are placed next to one another in a mirror image with respect to the miter plane G.
  • the outer profile area i.e. the in Fig. 2 non-visible sides below and on the right, is open in each case. If plastic melt is injected there, a corner connector angle element is formed including the combination 10 ′ of two corner connector casting mold elements 10.
  • Fig. 3 a view from the miter plane G onto a hollow profile section 20 of a frame profile is shown.
  • This comprises a plastic hollow profile 21 made of thermoplastic, in particular made of rigid PVC, as well as metallic facing shells 22, 23 attached to it on both sides.
  • a corner connector casting mold element 10 according to the invention is inserted there in the area adjacent to the miter plane G.
  • the cavity 2 which can be filled with plastic melt is formed by the free cross-section remaining after the insertion of the parts mentioned between the plastic hollow profile 21 and the corner connector casting mold element 10.
  • Figure 4a shows a corner connection of two composite profiles 20 which, according to the first method steps, have already been mitered and each provided with a corner connector casting mold element 10.
  • the cutting plane extends in Figure 4a each by a plastic hollow profile 21 as the core profile, the metallic reinforcement profile 30 and a combination of two corner connector casting mold elements 10.
  • the metallic facing shell 23 is unobstructed on both sides. Those lying against one another in the miter plane G. Edges of the facing shells 23 have no direct connection to one another, and the corner connector casting mold elements 10 lying against one another are not yet connected to one another either. They are only connected to a statically loadable corner connector angle element by the in-situ production of a corner connector angle element according to the method according to the invention.
  • the ventilation openings 7 have an important function for the method according to the invention. On the one hand, they serve to discharge the air that is displaced into the hollow chamber 2 when the plastic melt is injected into the hollow chamber 2, thereby preventing the formation of bubbles within the plastic body produced in the hollow space.
  • the plastic melt 9 injected into the cavity 2 is also pressed outward through the vent opening 7, that is to say beyond the outer jacket surface, where it swells so that mushroom-like thickenings 9.1, 9.3 form. Also in the area of the injection opening 8, when the injection nozzle is withdrawn, some melt can remain in the opening 8, so that a protrusion 9.2 also results there.
  • the protrusions and thickenings 9.1, 9.2, 9.3 each cause a form-fitting anchoring of the melt, which solidifies from the outside to the inside, in the openings 7, 8.
  • the positive anchoring in the outer areas is already effective when the inner areas in the injected portion of plastic compound 9 are still warm and correspondingly soft. With the complete solidification and cooling, shrinkage stresses are thus formed in the plastic compound 9, so that the hollow profile sections 20 at the miter plane G are pulled together at the same time due to the form-fitting anchoring at points 9.1 ... 9.3.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

Die Erfindung betrifft ein Verfahren zur In-Situ-Fertigung eines Eckverbinder-Winkelelements innerhalb von Fenster- und Türhohlprofilen, mit wenigstens folgenden Verfahrensschritten:

  • Bereitstellen zweier auf Gehrung geschnittener Hohlprofilabschnitte;
  • Einfügen wenigstens je eines Eckverbinder-Formelements in beide Hohlprofilabschnitte, wobei das Eckverbinder-Formelement mit seinem einen Ende parallel zu einer Gehrungsebene in einer Profilhohlkammer positioniert wird;
  • Positionierung der Hohlprofilabschnitte mit den eingesetzten Eckverbinder-Formelementen derart zueinander, dass sich die Gehrungsschnittflächen gegenüber liegen.
The invention relates to a method for the in-situ production of a corner connector angle element within window and door hollow profiles, with at least the following method steps:
  • Providing two mitered hollow profile sections;
  • Inserting at least one corner connector shaped element each into both hollow profile sections, the corner connector shaped element being positioned with its one end parallel to a miter plane in a hollow profile chamber;
  • Positioning of the hollow profile sections with the corner connector shaped elements used in such a way that the miter cut surfaces are opposite one another.

Beim Verbinden zweier auf Gehrung geschnittener Hohlprofilabschnitte, insbesondere Kunststoffhohlprofile zum Bau von Fenster- und Türrahmen bzw. von Fenster- und Türflügeln, werden sogenannte Eckschweißverbinderelemente in die offen liegenden Enden der Kunststoffhohlprofilabschnitte eingesetzt. Beim Schweißprozess, der zur Verbindung der Kunststoffhohlprofile durchgeführt wird, werden dann nicht nur die gegeneinander gepressten Profilstege des Kunststoffhohlprofils, die sehr schmal sind, miteinander verbunden, sondern es werden im Bereich der Schnittfläche des Profils auch die wesentlich großflächigeren Eckschweißverbinderelemente miteinander verschweißt, sodass im Ergebnis ein aus zwei Eckschweißverbinderelementen bestehendes Winkelelement innerhalb der Hohlräume des Kunststoffhohlprofils geschaffen wird, welches die derartig ausgebildete Eckverbindung deutlich verstärkt.When connecting two mitered hollow profile sections, in particular plastic hollow profiles for the construction of window and door frames or window and door leaves, so-called corner welded connector elements are inserted into the exposed ends of the plastic hollow profile sections. During the welding process, which is carried out to connect the plastic hollow profiles, not only are the profile webs of the plastic hollow profile pressed against one another, which are very narrow, connected to one another, but they also become essential in the area of the cut surface of the profile Larger corner welding connector elements are welded together, so that as a result an angle element consisting of two corner welding connector elements is created within the cavities of the plastic hollow profile, which clearly reinforces the corner connection formed in this way.

Die DE 198 18 632 A1 der Anmelderin gibt ein gattungsgemäßes Verfahren an. Eckverbinder-Formelemente werden in eine Hohlkammer des jeweiligen Kunststoffhohlprofilabschnitts eingeschoben werden und durch Injektion von Klebstoff von der offen liegenden Ebene des Gehrungsschnitts her in dem Hohlprofilabschnitt fixiert werden, so dass jeweils ein Schweißspiegel am Eckverbinder-Formelement bündig in der Gehrungsebene positioniert ist. Mit dem Verschweißen der thermoplastischen Kunststoffhohlprofilabschnitte werden auch die Eckverbinder-Formelemente miteinander verbunden, so dass sie zusammen ein in der Ecke des Rahmens oder des Flügels angeordnetes, winkelfömiges Eckverbinder-Winkelelement ausbilden. Werden Rahmen oder Flügel mechanisch belastet, so brauchen die Eckverbinder-Winkelelemente jedoch nur einen Teil der Kräfte aufnehmen, da die sie umgebenden Profilstege ebenfalls mit den Profilstegen des benachbarten Hohlprofils verschweißt sind, so dass auch darüber Kräfte übertragbar sind.The DE 198 18 632 A1 the applicant indicates a generic method. Corner connector shaped elements are pushed into a hollow chamber of the respective plastic hollow profile section and are fixed in the hollow profile section by injection of adhesive from the exposed plane of the miter cut, so that a welding mirror on the corner connector shaped element is positioned flush in the miter plane. With the welding of the thermoplastic plastic hollow profile sections, the corner connector shaped elements are also connected to one another, so that they together form an angular corner connector element arranged in the corner of the frame or the sash. If frames or sashes are mechanically stressed, the corner connector angle elements only need to absorb part of the forces, since the profile webs surrounding them are also welded to the profile webs of the adjacent hollow profile, so that forces can also be transmitted over them.

Bei Verbundprofilen aus einem inneren Kunststoffhohlprofil und außen aufgesetzten Metallprofilhalbschalen aus Aluminium besteht das besondere Problem, dass durch Verschweißung des Kunststoffanteils des Verbundprofils allein keine ausreichenden Flächen verbunden werden, um die an den Eckverbindungen auftretenden Kräfte sicher aufnehmen zu können.With composite profiles made of an inner plastic hollow profile and metal profile half-shells made of aluminum on the outside, there is the particular problem that welding the plastic portion of the composite profile alone does not connect sufficient areas to safely absorb the forces occurring at the corner connections.

Aus der DE 100 06 962 A1 ist ein vorgefertigter Eckwinkel für Fenster- oder Türhohlprofile bekannt, der für sich allein tragfähig ist und der über eine Klebverbindung mit den nachträglich auf ihn aufzuschiebenden, auf Gehrung geschnittenen Hohlprofilen verbunden wird. Im Montagezustand verbleibt zwischen diesem Eckwinkel und den Wandungen der Hohlprofile ein Zwischenraum, der mit Dicht-/Klebstoff verfüllt würde. Als Dicht-/Klebstoff könnten beispielsweise Einkomponenten- oder Zweikomponenten-PUR-Klebstoffe oder Epoxidklebstoffe eingesetzt werden. Soweit die Hohlprofile zumindest teilweise aus thermoplastischem Kunststoff bestehen, ist dieser Eckwinkel nicht einsetzbar, da er eine Verschweißung in der Gehrungsebene ebenso verhindert wie ein sortenreines Recycling, da sich die duroplastischen Dicht- und Klebstoffe nachträglich nicht mehr ablösen lassen.From the DE 100 06 962 A1 a prefabricated corner bracket for window or door hollow profiles is known, which is self-supporting and which is connected via an adhesive connection to the miter-cut hollow profiles that are subsequently pushed onto it. In the assembled state, there remains a gap between this corner bracket and the walls of the hollow profiles, which would be filled with sealant / adhesive. One-component or two-component PUR adhesives or epoxy adhesives, for example, could be used as the sealant / adhesive. If the hollow profiles are at least partially made of thermoplastic material, this corner bracket cannot be used, as it prevents welding in the miter plane as well as pure recycling, since the thermoset sealants and adhesives can no longer be removed afterwards.

Die Aufgabe der vorliegenden Erfindung besteht darin, ein Verfahren zur In-Situ-Fertigung eines Eckverbinder-Winkelelements an auf Gehrung geschnittenen Fenster- und Türprofilen anzugeben, durch das eine mechanisch belastbare Profilverbindung auch von Metallprofilen und insbesondere von Verbundprofilen aus Kunststoff und Metall ermöglicht wird.The object of the present invention is to provide a method for the in-situ production of a corner connector angle element on mitered window and door profiles, by means of which a mechanically resilient profile connection is also made possible of metal profiles and in particular of composite profiles made of plastic and metal.

Diese Aufgabe wird durch ein Verfahren mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a method with the features of claim 1.

Ein zur Durchführung des Verfahrens geeignetes Eckverbinder-Gießform-element gibt Anspruch 8 an.A corner connector casting mold element which is suitable for carrying out the method is provided in claim 8.

Erfindungswesentlich ist, dass die erfindungsgemäß verwandten Eckverbinder-Gießformelemente nicht vorgefertigte Teilelemente sind, die durch bloßes Fügen zu einem Eckverbinder-Winkelelement kombiniert werden, sondern dass sie zusammen mit den sie umgebenden Wänden der Profilkammer Formschalen bilden, um im Wege des Kunststoffspritzgusses ein Eckverbinder-Winkelelement aus thermoplastischem Vollmaterial direkt innerhalb eines Hohlraums in den Blendrahmen- oder Flügelprofilen zu erzeugen. Die verwendeten Eckverbinder-Gießformelemente werden durch Adhäsion und/oder oberflächliche Verschmelzung mit der eingespritzten Kunststoffschmelze zwar indirekt zu Bestandteilen des Eckverbinder-Winkelelements; sie sind aber in diesem Verbund statisch nicht allein bestimmend. Statisch wirksam im Eckenbereich der mit einem solchen Verfahren verbundenen Profilabschnitte ist überwiegend das aus zwei Gießformelementen und der eingespritzten Kunststoffmasse in-situ hergestellte Eckverbinder-Winkelelement.It is essential to the invention that the corner connector casting mold elements used according to the invention are not prefabricated sub-elements that are combined to form a corner connector angle element by simply joining them, but that they together with the surrounding walls of the profile chamber form mold shells to create a corner connector angle element by means of plastic injection molding from thermoplastic solid material directly within a cavity in the frame or sash profiles. The corner connector casting mold elements used become part of the corner connector angle element indirectly through adhesion and / or superficial fusion with the injected plastic melt; however, they are not the only static determinants in this network. Statically effective in the corner area of the profile sections connected with such a method is predominantly the corner connector angle element made in-situ from two casting mold elements and the injected plastic compound.

Eine Herstellung "in-situ" bedeutet, dass das Eckverbinder-Winkelelement gemäß der Erfindung nicht in einem separaten Herstellungsprozess vorgefertigt wird und dass auch nicht einfach zwei vorgefertigte Hälften vor der Montage der Profilstücke miteinander verklebt werden, sondern dass das Eckverbinder-Winkelelement innerhalb des Hohlraums der bereits lagerichtig aneinander liegenden Kunststoffhohlprofilabschnitte hergestellt wird, was von außen völlig unsichtbar ist.A production "in-situ" means that the corner connector angle element according to the invention is not prefabricated in a separate manufacturing process and that two prefabricated halves are not simply glued together before the assembly of the profile pieces, but that the corner connector angle element within the cavity the already correctly positioned plastic hollow profile sections is produced, which is completely invisible from the outside.

Ein weiterer wichtiger Vorteil des erfindungsgemäßen Verfahrens liegt darin, dass die eingespritzte thermoplastische Kunststoffmasse beim Abkühlen zur Schrumpfung neigt, zugleich aber durch Stoffschluss und/oder Formschluss mit den sie umgebenden Gießformelementen und Profilwänden daran gehindert ist. Vorzugsweise werden daher geeignete Stoffpaarungen für den thermoplastischen Werkstoff der Kunststoffhohlprofile und für die einzuspritzende Kunststoffmasse genutzt, mit denen dieser Effekt besonders gut genutzt werden kann. Die Folge sind eingefrorene Schrumpfspannungen in dem in-situ hergestellten Eckverbinder-Winkelelement. Erwärmt sich ein mit dem erfindungsgemäßen Verfahren hergestelltes Fenster oder eine Tür im Gebrauch z.B. durch starke Sonneneinstrahlung, so relaxieren die Schrumpfspannungen zwar teilweise. Die verbleibenden Anteile der inhärenten Schrumpfspannungen sorgen jedoch dafür, dass die Profilschnittflächen in der Gehrungsebene zusammengehalten werden, und zwar insbesondere auch an den außenseitig angeordneten Metallprofilhalbschalen. Damit wird das Öffnen der Gehrungsfuge bei Erwärmung verhindert.Another important advantage of the method according to the invention is that the injected thermoplastic material tends to shrink when it cools, but at the same time is prevented from doing so by a material connection and / or form connection with the surrounding mold elements and profile walls. Therefore, suitable material pairings are preferably used for the thermoplastic material of the plastic hollow profiles and for the plastic compound to be injected, with which this effect can be used particularly well. The result is frozen shrinkage stresses in the corner connector angle element produced in-situ. If a window or a door produced with the method according to the invention is heated during use, for example by strong solar radiation, the shrinkage stresses relax in part. However, the remaining portions of the inherent shrinkage stresses ensure that the profile cut surfaces are held together in the miter plane, in particular also on the metal profile half-shells arranged on the outside. This prevents the miter joint from opening when heated.

Durch den am Eckverbinder-Gießformelement vorhandenen Dichtabsatz werden die Hohlkammern des Profils jeweils vollständig abgesperrt, so dass das auszuspritzende Volumen begrenzt wird.The hollow chambers of the profile are each completely blocked off by the sealing shoulder present on the corner connector casting mold element, so that the volume to be ejected is limited.

Vorteilhaft ist es, an wenigstens einer zentralen Eintrittsöffnung einzuspritzen, so dass die Kunststoffschmelze aus einem mittleren Bereich der von beiden Hohlprofilabschnitten gemeinsam gebildeten Hohlkammer aus zu den Endbereichen fließt. Damit ist gewährleistet, dass im Bereich der Gehrungsfuge, die im Gebrauch der Fenster mechanisch hoch belastet ist, ein dichter und blasenfreier Kunststoffkörper entsteht. Die Eintrittsöffnung kann beispielsweise im Bereich der Gehrungsebene liegen.It is advantageous to inject at at least one central inlet opening, so that the plastic melt flows from a central area of the hollow chamber formed jointly by the two hollow profile sections to the end areas. This ensures that a dense and bubble-free plastic body is created in the area of the miter joint, which is mechanically highly stressed when the window is in use. The inlet opening can, for example, lie in the area of the miter plane.

Weiterhin sollten Austrittsöffnungen vorgesehen sein, die jeweils in den hinteren, von der Gehrungsebene weg weisenden Bereichen der durch die Dichtungsabschnitte begrenzten Hohlkammern liegen. Mit diesen wird zum einen gewährleistet, dass beim Einspritzen die Luft vollständig entweichen kann und im Eckverbindelement eingeschlossene Luftblasen vermieden werden. Zum anderen kann durch eine geeignete Dimensionierung der Austrittsöffnungen erreicht werden, dass die hochviskose Kunststoffschmelze zwar in die Austrittsöffnungen hineinfließt und dort mit dem Erstarren eine formschlüssige Verankerung des Eckverbinder-Gießformelements am Hohlprofilabschnitt bewirkt wird, dass aber andererseits nicht zu viel Kunststoffschmelze in die angrenzenden Hohlkammern oder zur Außenseite hin abfließt.Furthermore, outlet openings should be provided, each of which is located in the rear areas of the hollow chambers delimited by the sealing sections, facing away from the miter plane. These ensure, on the one hand, that the air can completely escape during injection and that air bubbles trapped in the corner connector are avoided. On the other hand, by suitably dimensioning the outlet openings, it can be achieved that the highly viscous plastic melt flows into the outlet openings and a form-fitting anchoring of the corner connector casting mold element on the hollow profile section is effected there as it solidifies, but that on the other hand not too much plastic melt into the adjacent hollow chambers or flows to the outside.

Die Erfindung wird nachfolgend mit Bezug auf die Zeichnung näher erläutert. Die Figuren zeigen im Einzelnen:

Fig. 1
ein Eckverbinder-Gießformelement in perspektivischer Ansicht;
Fig. 2
eine Kombination zweier Eckverbinder-Gießformelemente in seitlicher Ansicht;
Fig. 3
ein Fensterrahmen-Verbundprofil mit einem eingesetztem Eckverbinder-Gießformelement im Schnitt und
Fig. 4a, 4b
einen Eckbereich eines Fensterrahmens mit einem Verbundprofil mit eingesetzten Eckverbinder-Gießformelementen im Schnitt, jeweils vor und nach dem Einspritzen von Kunststoff.
The invention is explained in more detail below with reference to the drawing. The figures show in detail:
Fig. 1
a corner connector casting mold element in perspective view;
Fig. 2
a combination of two corner connector casting mold elements in a side view;
Fig. 3
a window frame composite profile with an inserted corner connector casting mold element in section and
Figures 4a, 4b
a corner area of a window frame with a composite profile with inserted corner connector casting mold elements in section, in each case before and after the injection of plastic.

Figur 1 zeigt ein Eckverbinder-Gießformelement 10, das vorzugsweise einteilig aus einem Blockkörper 1 aus Kunststoff gebildet ist. Dieser besitzt seitliche Einfassungsstege 1.1, ist dazwischen jedoch hohl und zur Unterseite hin offen, um mit den angrenzenden Profilwänden zusammen einen Hohlraum 2 zu bilden, in den Kunststoffmasse eingespritzt werden kann. Der Blockkörper 1 besitzt an seinem einen, in Fig. 1 hinteren Ende mehrere parallele Dichtkragen 4, um den Querschnitt einer Profilhohlkammer, in die das Eckverbinder-Gießformelement 10 einsetzbar ist, vollständig abzusperren. An diesem Ende ist auch der im vorderen Bereiche offene Querschnitt des Hohlraums 2 vollständig abgesperrt, vorzugsweise über eine Wand an der rückwärtigen Stirnseite 6. Figure 1 shows a corner connector casting mold element 10, which is preferably formed in one piece from a block body 1 made of plastic. This has lateral border webs 1.1, but is hollow in between and open to the bottom in order to form a cavity 2 together with the adjoining profile walls, into which the plastic compound can be injected. The block body 1 has at its one, in Fig. 1 rear end several parallel sealing collars 4 in order to completely shut off the cross section of a hollow profile chamber into which the corner connector casting mold element 10 can be inserted. At this end, the cross section of the cavity 2, which is open in the front area, is also completely closed off, preferably via a wall on the rear end face 6.

Zum anderen Ende hin ist der Blockkörper entsprechend dem Gehrungswinkel einer Gehrungsebene G abgeschrägt. Dort mündet der Hohlraum 2, der von dem U-förmigen Blockkörper 1 umfasst wird.Towards the other end, the block body is beveled in accordance with the miter angle of a miter plane G. The cavity 2, which is encompassed by the U-shaped block body 1, opens there.

Der Blockkörper 1 weist an seinen Außenumfangsseiten mehrere den Abstand zu der Wandung der Profilhohlkammer überbrückende Abstandshalterelemente 5 auf und kann zudem der Verankerung einer in den Profilhohlraum 2 eingespritzten Kunststoffmasse dienen.On its outer circumferential sides, the block body 1 has a plurality of spacer elements 5 bridging the distance from the wall of the profile hollow chamber and can also serve to anchor a plastic compound injected into the profile hollow space 2.

Um das Volumen der einzuspritzenden Portion an Kunststoffschmelze zu reduzieren und um eine statisch günstige U-Form des in-situ herzustellenden Eckverbinder-Winkelelements zu erreichen, kann im Querschnitt des Hohlraums 2 eine mittig angeordnete Profilhohlkammer 3 vorgesehen sein, um in diesem Bereich als Verdränger für die Kunststoffschmelze zu wirken. Es kann auch bewusst vorgesehen sein, etwa durch Wahl geeigneter Wandstärken, die Profilhohlkammer 3 leichter verformbar zu machen, so dass im Falle eines Überdrucks beim Einspritzen, der ja mit einer deutlichen Temperaturerhöhung durch die eingespritzte Kunststoffschmelze einhergeht, zunächst die Wandungen der Profilhohlkammer 3 verformen zu lassen, nicht aber die angrenzenden Wandungen des Fenster- oder Türprofils, in die das Eckverbinder-Gießformelement 10 eingesetzt ist.In order to reduce the volume of the portion of plastic melt to be injected and to achieve a statically favorable U-shape of the corner connector angle element to be produced in situ , a centrally arranged hollow profile chamber 3 can be provided in the cross section of the cavity 2 in order to act as a displacer for the plastic melt to act. It can also be deliberately provided, for example by choosing suitable wall thicknesses, to make the profile hollow chamber 3 more easily deformable, so that in the event of an overpressure during injection, this results in a significant increase in temperature due to the injected plastic melt, initially the walls of the hollow profile chamber 3 must be deformed, but not the adjoining walls of the window or door profile into which the corner connector casting mold element 10 is inserted.

Fig. 2 zeigt eine lagerichtige Kombination 10' zweier Eckverbinder-Gießformelemente 10, die spiegelbildlich in Bezug auf die Gehrungsebene G aneinandergestellt sind. Der äußere Profilbereich, also die in Fig. 2 nicht sichtbaren Seiten unten und rechts, ist jeweils offen. Wird dort Kunststoffschmelze eingespritzt, wird unter Einschluss der Kombination 10' von zwei Eckverbinder-Gießformelementen 10 ein Eckverbinder-Winkelelement ausgebildet. Fig. 2 shows a positionally correct combination 10 ′ of two corner connector casting mold elements 10, which are placed next to one another in a mirror image with respect to the miter plane G. The outer profile area, i.e. the in Fig. 2 non-visible sides below and on the right, is open in each case. If plastic melt is injected there, a corner connector angle element is formed including the combination 10 ′ of two corner connector casting mold elements 10.

In Fig. 3 ist eine Ansicht von der Gehrungsebene G her auf einen Hohlprofilabschnitt 20 eines Rahmenprofils dargestellt. Dieses umfasst ein Kunststoffhohlprofil 21 aus thermoplastischem Kunststoff, insbesondere aus Hart-PVC, sowie daran beidseits angesetzte metallische Vorsatzschalen 22, 23. In eine Profilhohlkammer 24 im Kunststoffhohlprofil 21 ist zunächst ein beim Türen- und Fensterbau mit Kunststoffprofilen übliches Verstärkungsprofil 30 aus Stahlblech eingesetzt. Außerdem ist dort in dem zur Gehrungsebene G benachbarten Bereich ein erfindungsgemäßes Eckverbinder-Gießformelement 10 eingesetzt. Durch den nach dem Einsetzen der genannten Teile verbleibenden freien Querschnitt zwischen dem Kunststoffhohlprofil 21 und dem Eckverbinder-Gießformelement 10 wird der Hohlraum 2 gebildet, der mit Kunststoffschmelze gefüllt werden kann.In Fig. 3 a view from the miter plane G onto a hollow profile section 20 of a frame profile is shown. This comprises a plastic hollow profile 21 made of thermoplastic, in particular made of rigid PVC, as well as metallic facing shells 22, 23 attached to it on both sides. In addition, a corner connector casting mold element 10 according to the invention is inserted there in the area adjacent to the miter plane G. The cavity 2 which can be filled with plastic melt is formed by the free cross-section remaining after the insertion of the parts mentioned between the plastic hollow profile 21 and the corner connector casting mold element 10.

Figur 4a zeigt eine Eckverbindung zweier Verbundprofile 20, die gemäß den ersten Verfahrensschritten bereits auf Gehrung abgelängt und mit je einem Eckverbinder-Gießformelement 10 versehen worden sind. Die Schnittebene erstreckt sich in Figur 4a jeweils durch ein Kunststoffhohlprofil 21 als Kernprofil, das metallische Verstärkungsprofil 30 und eine Kombination zweier Eckverbinder-Gießformelemente10. Beidseits davon ist der Blick auf die metallische Vorsatzschale 23 frei. Die in der Gehrungsebene G aneinander liegenden Kanten der Vorsatzschalen 23 besitzen keinerlei direkte Verbindung miteinander, und auch die aneinander liegenden Eckverbinder-Gießformelemente 10 sind noch nicht miteinander verbunden. Sie werden erst durch die In-Situ-Fertigung eines Eckverbinder-Winkelelements nach dem erfindungsgemäßen Verfahren zu einem statisch belastbaren Eckverbinder-Winkelelement verbunden. Figure 4a shows a corner connection of two composite profiles 20 which, according to the first method steps, have already been mitered and each provided with a corner connector casting mold element 10. The cutting plane extends in Figure 4a each by a plastic hollow profile 21 as the core profile, the metallic reinforcement profile 30 and a combination of two corner connector casting mold elements 10. The metallic facing shell 23 is unobstructed on both sides. Those lying against one another in the miter plane G. Edges of the facing shells 23 have no direct connection to one another, and the corner connector casting mold elements 10 lying against one another are not yet connected to one another either. They are only connected to a statically loadable corner connector angle element by the in-situ production of a corner connector angle element according to the method according to the invention.

In der Schnittdarstellung nach Fig. 4a sind die jeweiligen Hohlräume 2 zwischen den Eckverbinder-Gießformelementen 10 und den angrenzenden Profilwänden 25 der Kunststoffhohlprofile 21 deutlich sichtbar. Zu diesem Hohlraum sind durch wenigstens drei Öffnungen in den Profilwänden 25 Verbindungen nach außen geschaffen:

  • Nahe zur Gehrungsebene G ist wenigstens eine Einspritzöffnung 8 vorgesehen; vorzugsweise sind, je nach Profilgröße, an beiden benachbarten Kunststoffhohlprofilen 21 Einspritzöffnungen 8 vorgesehen.
  • Außerdem bestehen weitere Verbindungen in Form von Entlüftungsöffnungen 7 im rückwärtigen Bereich der Hohlräume 2.
In the sectional view after Figure 4a the respective cavities 2 between the corner connector casting mold elements 10 and the adjoining profile walls 25 of the plastic hollow profiles 21 are clearly visible. To this cavity 25 connections to the outside are created through at least three openings in the profile walls:
  • At least one injection opening 8 is provided close to the miter plane G; Injection openings 8 are preferably provided on both adjacent plastic hollow profiles 21, depending on the profile size.
  • In addition, there are further connections in the form of ventilation openings 7 in the rear region of the cavities 2.

Die Entlüftungsöffnungen 7 besitzen eine wichtige Funktion für das erfindungsgemäße Verfahren. Sie dienen einerseits dazu, die Luft, die beim Einspritzen der Kunststoffschmelze in die Hohlkammer 2 verdrängt wird, nach außen abzuführen und dadurch eine Blasenbildung innerhalb des im Hohlraum entstehenden Kunststoffkörpers zu vermeiden.The ventilation openings 7 have an important function for the method according to the invention. On the one hand, they serve to discharge the air that is displaced into the hollow chamber 2 when the plastic melt is injected into the hollow chamber 2, thereby preventing the formation of bubbles within the plastic body produced in the hollow space.

Wie Fig. 4b zeigt, wird die in den Hohlraum 2 eingespritzte Kunststoffschmelze 9 aber auch durch die Entlüftungsöffnung 7 nach außen, also bis über die äußere Mantelfläche hinaus, gedrückt, wo sie aufquillt, so dass sich pilzartige Verdickungen 9.1, 9.3 bilden. Auch im Bereich der Einspritzöffnung 8 kann beim Zurückziehen der Einspritzdüse etwas Schmelze in der Öffnung 8 stehen bleiben, so dass sich auch dort ein Überstand 9.2 ergibt. Die Überstände und Verdickungen 9.1, 9.2, 9.3 bewirken jeweils eine formschlüssige Verankerung der von außen nach innen erstarrenden Schmelze in den Öffnungen 7, 8. Dabei ist die formschlüssige Verankerung in den Außenbereichen schon dann wirksam, wenn die inneren Bereiche in der eingespritzten Portion an Kunststoffmasse 9 noch warm und entsprechend weich sind. Mit dem vollständigen Erstarren und Abkühlen bilden sich somit Schrumpfspannungen in der Kunststoffmasse 9, so dass aufgrund der formschlüssigen Verankerungen an den Punkten 9.1 ... 9.3 zugleich die Hohlprofilabschnitte 20 an der Gehrungsebene G aufeinander gezogen werden.How Figure 4b shows, the plastic melt 9 injected into the cavity 2 is also pressed outward through the vent opening 7, that is to say beyond the outer jacket surface, where it swells so that mushroom-like thickenings 9.1, 9.3 form. Also in the area of the injection opening 8, when the injection nozzle is withdrawn, some melt can remain in the opening 8, so that a protrusion 9.2 also results there. The protrusions and thickenings 9.1, 9.2, 9.3 each cause a form-fitting anchoring of the melt, which solidifies from the outside to the inside, in the openings 7, 8. The positive anchoring in the outer areas is already effective when the inner areas in the injected portion of plastic compound 9 are still warm and correspondingly soft. With the complete solidification and cooling, shrinkage stresses are thus formed in the plastic compound 9, so that the hollow profile sections 20 at the miter plane G are pulled together at the same time due to the form-fitting anchoring at points 9.1 ... 9.3.

Claims (11)

  1. Method for in-situ manufacturing of a corner connector angle element within window and door hollow profiles, comprising at least the following method steps:
    - providing two mitre-cut hollow profile sections (21) ;
    - inserting at least one respective corner connector moulding element (10) into both hollow profile sections (21), wherein the corner connector moulding element (10) is positioned by its one end in a mitre plane (G), or parallel thereto, in a profile hollow chamber (24);
    - positioning the hollow profile section (21) with the inserted corner connector moulding elements (10) with respect to one another in such a way that the mitre-cut surfaces are situated opposite one another;
    characterized in that a corner connector angle element of thermoplastic solid material with corner connector moulding elements (10) embedded therein is produced within the mutually adjoining profile hollow chambers (24) in the hollow profile sections (21) by virtue of the fact that:
    - the corner connector moulding element used in each case is a hollow corner connector moulding element (10) which, together with the adjoining walls of the hollow profile section (21), forms at least one cavity (2) which opens in the mitre plane (G) and is closed off at its other end, wherein the corner connector moulding element (10) has at least one sealing portion (4) of which the outer contour corresponds at least to the inner contour of a profile hollow chamber (24) and/or of a reinforced profile (30) inserted therein, or of which the outer contour has an oversize in relation to the inner contour, and
    - a molten thermoplastic compound (9) is injected through at least one injection opening (8) incorporated in at least one of the hollow profile sections (21) into the cavity (2) formed between the corner connector moulding elements (10) and the hollow profile section (21).
  2. Method according to Claim 1, characterized in that the injection opening (8) is arranged in the region of the mitre plane (G), and in that, at each of the ends of the cavities (2) that face away from said mitre plane, prior to the injection of the plastic compound (9), in each case at least one outlet opening (7) is made in the wall of the profile hollow chamber (24) of the hollow profile section (20).
  3. Method according to Claim 1 or 2, characterized in that the wall of the profile hollow chamber (24) in the hollow profile section (21) has at least one vent opening (7), and in that plastic compound is injected into the cavity (82) to such an extent that there is formed, on the outer circumference of the corner connector moulding element (10), at least one mushroom-shaped thickening (9.1, 9.3), which projects outwards through the openings (7, 8), and/or a protrusion (9.2).
  4. Method according to one of Claims 1 to 3, characterized in that use is made of a composite profile (20) which consists of at least one thermoplastic hollow profile (21), which contains at least one profile hollow chamber (24), and at least one metallic facing shell (22, 23).
  5. Method according to Claim 4, characterized in that the hollow profile used is a plastic hollow profile, and the coefficient of longitudinal expansion of the injected thermoplastic compound (9) is greater than or equal to the coefficient of longitudinal expansion of the thermoplastic hollow profile (21).
  6. Method according to one of Claims 1 to 5, characterized in that a hard PVC plastic is injected.
  7. Method according to one of Claims 1 to 6, characterized in that at least one reinforcing profile (30), which is open at least on one side, is inserted into the same profile hollow chamber (24) of the hollow profile section (21) into which the corner connector moulding element (10) is inserted, and at least partially overlaps with the corner connector moulding element (10) in the longitudinal direction.
  8. Corner connector moulding element (10) for carrying out the method according to one of Claims 1 to 7, characterized in that the corner connector moulding element (10) is formed from a block body (1),
    - which is bevelled at its one end to correspond to a mitre plane (G),
    - which has at its other end at least one sealing portion (4) of which the outer contour corresponds at least to the inner contour of the profile hollow chamber (24) and/or of a reinforcing profile (30) inserted therein, or has an oversize in relation thereto, and
    - which engages by its lateral border webs (11.1) around at least one cavity (2) which is closed off at one end and leads out open in the mitre plane (G) at the other end.
  9. Corner connector moulding element (10) according to Claim 8, characterized in that
    - the cross section at least over part of the length and/or of the circumference of the block body (1) is smaller than the cross section of a profile hollow chamber (24) in the window or door hollow profile (21);
    - in that the block body (1) has, on its outer circumferential sides, a plurality of spacer elements (5) which bridge the gap to the wall of the profile hollow chamber.
  10. Corner connector moulding element (10) according to Claim 8 or 9, characterized in that the outer circumferential sides of the block body (1) have at least one latching element arranged thereon that is provided to engage in the inner wall of the profile hollow chamber (24).
  11. Corner connector moulding element (10) according to one of Claims 8 to 10, characterized in that the sealing portion comprises a plurality of seal collars (4) which are parallel to one another.
EP15192913.0A 2014-11-13 2015-11-04 Method for in-situ manufacturing of a corner connector angle element in window and door hollow profiles and corner connector moulding element for same Active EP3020909B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014116642.6A DE102014116642A1 (en) 2014-11-13 2014-11-13 Method for the in-situ production of a corner connector element in mitred window and door profiles and corner connector-shaped element therefor

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EP3020909A1 EP3020909A1 (en) 2016-05-18
EP3020909B1 true EP3020909B1 (en) 2021-05-05

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AU2020204556A1 (en) 2019-07-12 2021-01-28 Jeld-Wen, Inc. Systems and methods for joining fenestration frame member
USD1009306S1 (en) 2021-05-18 2023-12-26 Jeld-Wen, Inc. Corner key
USD1009305S1 (en) 2021-05-18 2023-12-26 Jeld-Wen, Inc. Corner key
USD1009307S1 (en) 2021-05-18 2023-12-26 Jeld-Wen, Inc. Corner key
USD1009308S1 (en) 2021-05-18 2023-12-26 Jeld-Wen, Inc. Corner key

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DE19818632C2 (en) 1998-04-25 2003-05-28 Veka Ag Device for a corner connection of hollow plastic profiles
DE10006962A1 (en) * 2000-02-16 2001-08-30 Evg Bauprofil System Entwicklungs & Vermarktungsgesellschaft Mbh Corner bracket for connecting two hollow window, door or facade frame profiles with mitre joint, has two arms with end seals for insertion into each profile
ITRN20020004A1 (en) * 2002-01-31 2003-07-31 L M Dei F Lli Monticelli S R L TEAM FOR STRUCTURAL CONNECTION OF METAL TUBULAR PROFILES CONTAINED FOR INTERNAL STRENGTHENING OF PLASTIC TUBULAR PROFILES AND REL

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