EP0449801B1 - Apparatus for bending hollow frames for isolating glass - Google Patents

Apparatus for bending hollow frames for isolating glass Download PDF

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Publication number
EP0449801B1
EP0449801B1 EP91890054A EP91890054A EP0449801B1 EP 0449801 B1 EP0449801 B1 EP 0449801B1 EP 91890054 A EP91890054 A EP 91890054A EP 91890054 A EP91890054 A EP 91890054A EP 0449801 B1 EP0449801 B1 EP 0449801B1
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EP
European Patent Office
Prior art keywords
gripper
hollow profile
carriage
bending
drive motor
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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.)
Expired - Lifetime
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EP91890054A
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German (de)
French (fr)
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EP0449801A3 (en
EP0449801A2 (en
Inventor
Peter Lisec
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Individual
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Individual
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Priority claimed from AT74290A external-priority patent/AT398395B/en
Priority claimed from AT184090A external-priority patent/AT397775B/en
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Publication of EP0449801A2 publication Critical patent/EP0449801A2/en
Publication of EP0449801A3 publication Critical patent/EP0449801A3/en
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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
    • 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
    • E06B2003/67395—Non-planar units or of curvilinear outline, e.g. for vehicles

Definitions

  • the invention relates to a device for bending hollow profile strips to form spacer frames for insulating glass panes according to the preamble of claim 1.
  • Such devices are known for example from DE-GM 87 05 796.4 or DE-OS 32 21 986.
  • the length of the profile bar (hollow profile bar) projecting beyond the bending point must be determined so that the spacer frame is obtained with the desired dimensions.
  • the known bending devices for producing a spacer for insulating glass determine the length of the profile bar by measuring the distance via incremental encoders.
  • the profiled rod is moved by transport rollers resting against it on both sides, at least one of which is driven.
  • An impeller encoder wheel
  • the encoder wheel which runs along the outer profile wall, detects the extent of the advance of the hollow profile bar.
  • CH-PS 638 273 From CH-PS 638 273 a device for pressing insulating bars into metal profiles to be joined together to form a composite profile is known.
  • a longitudinal movement of the insulating rod is just as little caused by the jaws as in CH-PS 638 273 a movement of the jaws 26 applied to the insulating rod in the longitudinal direction is mentioned.
  • a pair of rollers is provided for moving the hollow profile strip.
  • the rollers cannot be moved in the longitudinal direction of the hollow profile strip.
  • transport rollers which are not mounted movably in the machine frame in the conveying direction, also serve for the advance of the hollow profile strip to be moved.
  • the invention has for its object to provide a device with which the length of the profile, i.e. the length of the profile during transport into a bending device. the extent of the advance of the hollow profile strip, can be measured precisely and without tolerances.
  • the hollow profile strip (profile bar) to be bent to the spacer frame is advanced by the gripper exactly before each bending operation by the distance which corresponds to the length of the respective leg of the spacer frame. If the length of the leg is greater than the maximum stroke of the gripper, the profile bar is advanced in two or at most more than two steps.
  • the procedure can be such that the first stroke (or the first strokes) corresponds to a predetermined length (e.g. the maximum stroke) and the last stroke is adapted to the length of the frame leg.
  • a structurally simple embodiment of the device according to the invention is characterized in that the gripper is provided on a carriage which is displaceable on a guide running parallel to the conveying device.
  • the extent of the movement of the slide for the gripper and thus the advance of the hollow profile bar can be determined particularly precisely and without great effort if it is provided that the drive motor for the slide has a displacement measuring device, e.g. an incremental encoder is assigned.
  • the carriage is coupled to an endless toothed belt driven by the drive motor.
  • the drive motor is mounted on the slide and has a pinion which meshes with a toothed rack which is fixedly mounted in the device.
  • the method of operation is simplified if a stop which can be lowered under the conveying device is provided at the bending point.
  • a hollow profile strip 3 is on a conveyor 4, which is arranged at the lower end of a support wall 10 and is, for example, an endless conveyor belt or a simple slideway, up to a stop 7 in the region of a bending point, consisting of a bending abutment 8 and a bending lever 9, which for the Bending the hollow profile bar 3 is pivoted, transported.
  • the device can also have, for example, the structure known from DE-GM 87 05 796 and have a support finger which can be adjusted up and down in the support wall 10 and which extends through the support wall 10, as is also the case in the known device according to DE-GM 87 05 796 is provided.
  • the hollow profile bar 3 is from the transport device 4 advanced at the lower edge of the support wall 10 to the end stop 7.
  • the hollow profile strip 3 is thus in a "zero" position without tolerance.
  • the jaws of the gripper 2 mounted on the slide 1 grip the hollow profile bar 3 in this position.
  • the end stop 7 is sunk into the conveyor track 4 and the carriage 1 with the hollow profile bar 3 clamped by the gripper 2 now moves in the direction of the bending lever 9 exactly by the distance that a process computer specifies and that corresponds to the length of the frame leg.
  • the bending lever 9 bends the section 3 ′ of the hollow profile strip 3 projecting beyond the slide 1, which moves upwards along the backward inclined support wall 10 at the angle specified by a process computer becomes.
  • the exact measurement of the distance traveled by the carriage 1 is determined by an incremental encoder 6 or the extent of the movement of the carriage 1 and thus the extent of the advance of the hollow profile strip 3 is controlled by the latter.
  • the incremental encoder 6 is mounted on the drive motor 5 or at another point on the movement path 4 of the carriage 1.
  • the carriage 1 is driven by an endless toothed belt and is guided on a guide running parallel to the conveyor track 4.
  • the engagement of the toothed belt in the drive gear of the drive motor 5 is exact and free of play, so that an incremental encoder 6 mounted directly on the motor-gearbox unit can also accurately register the distance traveled by the slide 1.
  • the effective distance to be traveled by the slide 1 corresponds to the length of the section 3 'of the hollow profile bar 3, which the process computer determines and the length of a leg of the hollow profile bar 3 to be produced by the bending processes Spacer frame corresponds.
  • the drive motor 5 does not need to be fixedly mounted on the bending table 10, but can also be arranged on the slide 1.
  • the drive gear of the drive motor 5 (geared motor) then engages in the toothed rack fastened to the guide 4, it being possible for an incremental encoder 6 to also be mounted on the drive motor 5 or on the slide 1.
  • the gripper 2 mounted on the slide 1 detaches from the hollow profile bar 3.
  • the slide 1 then moves back to its starting position (reference point) at high speed, and the gripper 2 is gripped the hollow profile strip 3 again frictionally.
  • the carriage 1 can again move in the direction of the bending lever 9 exactly by the distance specified by the process computer and move the hollow profile strip 3 accordingly.
  • the conveyor track 4 can be a simple slideway.
  • At least one gripper 2 is mounted on the movable slide 1, which is driven in a slip-free manner by a drive means 5 (geared motor), which grips the hollow profile bar 3 in a friction-locked manner.
  • the unit slide 1 and gripper 2 transports the hollow profile strip 3 in the direction of the bending lever 9.
  • the bending lever 9 presses the section 3 'of the hollow profile bar 3 against the bending abutment 8 (bending beam) as high as from the process computer is determined for the angle in the corner of the spacer frame that is to be bent.
  • the gripper 2 While the bending lever 9 presses the section 3 'of the hollow profile strip 3 around the bending abutment 8 by the predetermined angle, along the backward inclined support wall 10, the gripper 2 opens and the carriage 1 moves back into the starting position, after which the gripper 2 closes again and holds the hollow profile strip 3 frictionally. The carriage 1 then moves forward in the direction of the bending point 8/9 in accordance with the predetermined path length and the next corner can be bent.
  • FIG. 3 A particularly favorable embodiment of a gripper 2, which ensures the necessary frictional engagement for the precise advancement of the hollow profile strip 3, is shown in FIG. 3.
  • the movable jaw 12 can be pivoted behind the support wall 10 of the device so that it does not hinder the removal of a finished bent spacer frame.

Description

Die Erfindung betrifft eine Vorrichtung zum Biegen von Hohlprofilleisten zu Abstandhalterrahmen für Isolierglasscheiben gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for bending hollow profile strips to form spacer frames for insulating glass panes according to the preamble of claim 1.

Solche Vorrichtungen sind beispielsweise aus dem DE-GM 87 05 796.4 oder der DE-OS 32 21 986 bekannt. Bei diesen bekannten Vorrichtungen muß die über die Biegestelle überstehende Länge des Profilstabes (Hohlprofilleiste) bestimmt werden, damit der Abstandhalterrahmen mit den gewünschten Abmessungen erhalten wird.Such devices are known for example from DE-GM 87 05 796.4 or DE-OS 32 21 986. In these known devices, the length of the profile bar (hollow profile bar) projecting beyond the bending point must be determined so that the spacer frame is obtained with the desired dimensions.

Die bekannten Biegevorrichtungen zum Herstellen eines Abstandhalters für Isolierglas bestimmen die Länge des Profilstabes durch Wegmessung über Inkrementalgeber.The known bending devices for producing a spacer for insulating glass determine the length of the profile bar by measuring the distance via incremental encoders.

In der Regel wird der Profilstab von an ihm beidseitig anliegenden Transportrollen bewegt, von welchen wenigstens eine angetrieben ist. Auf der äußeren Wand des so transportierten Profilstabes rollt ein Laufrad (Geberrad) ab, das über die Achse oder einen sonstigen Antrieb kraftschlüssig mit einem Inkrementalgeber verbunden ist.As a rule, the profiled rod is moved by transport rollers resting against it on both sides, at least one of which is driven. An impeller (encoder wheel) rolls on the outer wall of the profile rod thus transported, which is non-positively connected to an incremental encoder via the axis or another drive.

Das Geberrad, das an der äußeren Profilwandung entlang läuft, erfaßt das Ausmaß des Vorschubes der Hohlprofilleiste.The encoder wheel, which runs along the outer profile wall, detects the extent of the advance of the hollow profile bar.

Ein Nachteil bei diesen Vorrichtungen ist darin zu sehen, daß der Reibungsschluß zwischen dem Geberrad und dem Profilstab ungleichmäßig ist und so einen mehr oder weniger großen Schlupf zur Folge hat. Verschieden beschaffene Materialoberflächen des Profilstabes, glatt oder rauh, oder auch Rückstände von Staub oder Metallspänen, verursachen unweigerlich eine Fehlmessung des Inkrementalgebers, dies vor allem, wenn der Profilstab während der Meßbewegung angehalten wird oder zum Geberrad nur einfährt.A disadvantage of these devices can be seen in the fact that the frictional engagement between the encoder wheel and the profile rod is non-uniform and thus results in a more or less large slip. Different types Material surfaces of the profile bar, smooth or rough, or even residues of dust or metal chips, inevitably cause an incorrect measurement of the incremental encoder, especially if the profile bar is stopped during the measuring movement or only retracts to the encoder wheel.

Aus der CH-PS 638 273 ist eine Vorrichtung zum Einpressen von Isolierstäben in miteinander zu einem Verbundprofil zu verbindende Metallprofile bekannt. Die in der CH-PS 638 273 beschriebenen, an einen Isolierstab anlegbaren Backen dienen zum Festhalten des Isolierstabes, bevor auf diesen Metallprofile aufgeschoben werden sollen. Die Bakken richten den Isolierstab so aus, daß die Metallprofile aufgeschoben werden können. Eine Längsbewegung des Isolierstabes wird durch die Backen ebensowenig bewirkt wie in der CH-PS 638 273 eine Bewegung der an den Isolierstab angelegten Backen 26 in Längsrichtung erwähnt wird.From CH-PS 638 273 a device for pressing insulating bars into metal profiles to be joined together to form a composite profile is known. The jaws described in CH-PS 638 273, which can be placed on an insulating rod, serve to hold the insulating rod in place before metal profiles are to be pushed onto it. The Bakken align the insulating rod so that the metal profiles can be pushed on. A longitudinal movement of the insulating rod is just as little caused by the jaws as in CH-PS 638 273 a movement of the jaws 26 applied to the insulating rod in the longitudinal direction is mentioned.

Bei der aus dem DE-GM 87 05 796.4 bekannten Biegevorrichtung ist zum Verschieben der Hohlprofilleiste ein Rollenpaar vorgesehen. Die Rollen sind in Längsrichtung der Hohlprofilleiste nicht verschiebbar.In the bending device known from DE-GM 87 05 796.4, a pair of rollers is provided for moving the hollow profile strip. The rollers cannot be moved in the longitudinal direction of the hollow profile strip.

Bei der aus der DE-OS 32 21 986 bekannten Biegevorrichtung dienen ebenfalls Transportrollen, die im Maschinengestell in Förderrichtung nicht beweglich montiert sind, für den Vorschub der zu bewegenden Hohlprofilleiste.In the bending device known from DE-OS 32 21 986, transport rollers, which are not mounted movably in the machine frame in the conveying direction, also serve for the advance of the hollow profile strip to be moved.

Aufgrund der Nachteile der bekannten Meßeinrichtungen liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der beim Profiltransport in eine Biegevorrichtung die gefahrene Länge des Profils, d.h. das Ausmaß des Vorschubes der Hohlprofilleiste, genau und ohne Toleranzen meßbar ist.Due to the disadvantages of the known measuring devices, the invention has for its object to provide a device with which the length of the profile, i.e. the length of the profile during transport into a bending device. the extent of the advance of the hollow profile strip, can be measured precisely and without tolerances.

Gelöst wird diese Aufgabe mit einer Vorrichtung gemäß dem Anspruch 1.This object is achieved with a device according to claim 1.

Mit der erfindungsgemäßen Vorrichtung wird die zum Abstandhalterrahmen zu biegende Hohlprofilleiste (Profilstab) vor jedem Biegevorgang vom Greifer genau um die Strecke vorgeschoben, die der Länge des jeweiligen Schenkels des Abstandhalterrahmens entspricht. Falls die Länge des Schenkels größer ist als der maximale Hub des Greifers, wird die Profilleiste in zwei oder allenfalls mehr als zwei Schritten vorgeschoben. Dabei kann so vorgegangen werden, daß der erste Hub (oder die ersten Hübe) einer vorgegebenen Länge (z.B. dem maximalen Hub) entsprechen und der letzte Hub an die Länge des Rahmenschenkels angepaßt wird.With the device according to the invention, the hollow profile strip (profile bar) to be bent to the spacer frame is advanced by the gripper exactly before each bending operation by the distance which corresponds to the length of the respective leg of the spacer frame. If the length of the leg is greater than the maximum stroke of the gripper, the profile bar is advanced in two or at most more than two steps. The procedure can be such that the first stroke (or the first strokes) corresponds to a predetermined length (e.g. the maximum stroke) and the last stroke is adapted to the length of the frame leg.

Eine konstruktiv einfache Ausführungsform der erfindungsgemäßen Vorrichtung zeichnet sich dadurch aus, daß der Greifer an einem Schlitten vorgesehen ist, der auf einer parallel zur Fördereinrichtung verlaufenden Führung verschiebbar ist.A structurally simple embodiment of the device according to the invention is characterized in that the gripper is provided on a carriage which is displaceable on a guide running parallel to the conveying device.

Das Ausmaß der Bewegung des Schlittens für den Greifer und damit des Vorschubes der Hohlprofilleiste ist besonders genau und ohne großen Aufwand feststellbar, wenn vorgesehen ist, daß dem Antriebsmotor für den Schlitten eine Wegmeßeinrichtung, z.B. ein Inkrementalgeber, zugeordnet ist.The extent of the movement of the slide for the gripper and thus the advance of the hollow profile bar can be determined particularly precisely and without great effort if it is provided that the drive motor for the slide has a displacement measuring device, e.g. an incremental encoder is assigned.

In der Praxis ist erfindungsgemäß bevorzugt, daß der Schlitten mit einem vom Antriebsmotor angetriebenen Endlos-Zahnriemen gekuppelt ist. So wird ohne weiteres ein schlupffreier Antrieb gewährleistet. Alternativ kann vorgesehen sein, daß der Antriebsmotor am Schlitten montiert ist und ein Ritzel besitzt, das mit einer in der Vorrichtung ortsfest montierten Zahnstange kämmt.In practice it is preferred according to the invention that the carriage is coupled to an endless toothed belt driven by the drive motor. This guarantees a slip-free drive without further ado. Alternatively, it can be provided that the drive motor is mounted on the slide and has a pinion which meshes with a toothed rack which is fixedly mounted in the device.

Die Arbeitsweise vereinfacht sich, wenn an der Biegestelle ein unter die Fördereinrichtung versenkbarer Anschlag vorgesehen ist.The method of operation is simplified if a stop which can be lowered under the conveying device is provided at the bending point.

Weitere bevorzugte Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung einer in den Zeichnungen schematisch gezeigten Ausführungsform. Es zeigt:

  • Fig. 1 eine Vorrichtung zum Biegen von Hohlprofilleisten zu Abstandhalterrahmen,
  • Fig. 2 die Vorrichtung aus Fig. 1 in vergrößertem Maßstab und
  • Fig. 3 eine Ausführungsform einer Vorschubvorrichtung.
Further preferred details and features of the invention result from the following description of an embodiment shown schematically in the drawings. It shows:
  • 1 shows a device for bending hollow profile strips to form spacer frames,
  • Fig. 2 shows the device of Fig. 1 on an enlarged scale and
  • Fig. 3 shows an embodiment of a feed device.

Eine Hohlprofilleiste 3 wird auf einer Fördervorrichtung 4, die am unteren Ende einer Stützwand 10 angeordnet und beispielsweise ein Endlosfördergurt oder eine einfache Gleitbahn ist, bis zu einem Anschlag 7 im Bereich einer Biegestelle, bestehend aus einem Biegewiderlager 8 und einem Biegehebel 9, der für das Biegen der Hohlprofilleiste 3 verschwenkbar ist, transportiert.A hollow profile strip 3 is on a conveyor 4, which is arranged at the lower end of a support wall 10 and is, for example, an endless conveyor belt or a simple slideway, up to a stop 7 in the region of a bending point, consisting of a bending abutment 8 and a bending lever 9, which for the Bending the hollow profile bar 3 is pivoted, transported.

Der über die Biegestelle 8/9 - wie weiter unten beschrieben - hinaus transportierte Abschnitt 3' der Hohlprofilleiste 3 wird an der Stützwand 10 anliegend von dem Biegehebel 9 um ein Widerlager 8 herum gebogen.The section 3 'of the hollow profile strip 3, which is transported beyond the bending point 8/9, as described further below, is bent by the bending lever 9 around an abutment 8 in contact with the supporting wall 10.

Die Vorrichtung kann im übrigen beispielsweise den aus dem DE-GM 87 05 796 bekannten Aufbau besitzen und einen in der Stützwand 10 auf und ab verstellbaren, die Stützwand 10 durchgreifenden Stützfinger aufweisen, wie er auch in der bekannten Vorrichtung nach dem DE-GM 87 05 796 vorgesehen ist.The device can also have, for example, the structure known from DE-GM 87 05 796 and have a support finger which can be adjusted up and down in the support wall 10 and which extends through the support wall 10, as is also the case in the known device according to DE-GM 87 05 796 is provided.

Die Hohlprofilleiste 3 wird von der Transportvorrichtung 4 am unteren Rand der Stützwand 10 bis zum Endanschlag 7 vorgeschoben. Die Hohlprofilleiste 3 befindet sich damit toleranzfrei in einer "Null"-Position. Nun erfassen die am Schlitten 1 montierten Backen des Greifers 2 die Hohlprofilleiste 3 in dieser Lage. Der Endanschlag 7 wird in die Förderbahn 4 versenkt und der Schlitten 1 mit der vom Greifer 2 festgeklemmten Hohlprofilleiste 3 fährt nun in Richtung des Biegehebels 9 genau um jene Strecke vor, die ein Prozeßrechner vorgibt und die der Länge des Rahmenschenkels entspricht. Erreicht der Schlitten 1 den vorgegebenen und effektiv gemessenen Endpunkt seiner Bewegung, biegt der Biegehebel 9 den über den Schlitten 1 überstehenden Abschnitt 3' der Hohlprofilleiste 3 ab, wobei dieser entlang der nach rückwärts geneigten Stützwand 10 nach dem von einem Prozeßrechner vorgegebenen Winkel nach oben bewegt wird.The hollow profile bar 3 is from the transport device 4 advanced at the lower edge of the support wall 10 to the end stop 7. The hollow profile strip 3 is thus in a "zero" position without tolerance. Now the jaws of the gripper 2 mounted on the slide 1 grip the hollow profile bar 3 in this position. The end stop 7 is sunk into the conveyor track 4 and the carriage 1 with the hollow profile bar 3 clamped by the gripper 2 now moves in the direction of the bending lever 9 exactly by the distance that a process computer specifies and that corresponds to the length of the frame leg. When the slide 1 reaches the predetermined and effectively measured end point of its movement, the bending lever 9 bends the section 3 ′ of the hollow profile strip 3 projecting beyond the slide 1, which moves upwards along the backward inclined support wall 10 at the angle specified by a process computer becomes.

Die genaue Messung der vom Schlitten 1 gefahrenen Wegstrecke ermittelt ein Inkrementalgeber 6 bzw. wird das Ausmaß der Bewegung des Schlittens 1 und damit das Ausmaß des Vorschubes der Hohlprofilleiste 3 über diesen gesteuert. Der Inkrementalgeber 6 ist am Antriebsmotor 5 oder an einer anderen Stelle der Bewegungsbahn 4 des Schlittens 1 montiert.The exact measurement of the distance traveled by the carriage 1 is determined by an incremental encoder 6 or the extent of the movement of the carriage 1 and thus the extent of the advance of the hollow profile strip 3 is controlled by the latter. The incremental encoder 6 is mounted on the drive motor 5 or at another point on the movement path 4 of the carriage 1.

Der Schlitten 1 wird von einem Endlos-Zahnriemen angetrieben, und ist auf einer parallel zur Förderbahn 4 verlaufenden Führung geführt.The carriage 1 is driven by an endless toothed belt and is guided on a guide running parallel to the conveyor track 4.

Der Eingriff des Zahnriemens in das Antriebszahnrad des Antriebsmotors 5 (Getriebemotor) ist exakt und spielfrei, so daß auch ein unmittelbar an der Motor-Getriebe-Einheit montierter Inkrementalgeber 6 die gefahrene Wegstrecke des Schlittens 1 genau registrieren kann. Die efffektiv zu fahrende Strecke des Schlittens 1 entspricht der Länge des Abschnittes 3' der Hohlprofilleiste 3, die der Prozeßrechner bestimmt und die der Länge eines Schenkels des durch die Biegevorgänge aus der Hohlprofilleiste 3 herzustellenden Abstandhalterrahmen entspricht.The engagement of the toothed belt in the drive gear of the drive motor 5 (geared motor) is exact and free of play, so that an incremental encoder 6 mounted directly on the motor-gearbox unit can also accurately register the distance traveled by the slide 1. The effective distance to be traveled by the slide 1 corresponds to the length of the section 3 'of the hollow profile bar 3, which the process computer determines and the length of a leg of the hollow profile bar 3 to be produced by the bending processes Spacer frame corresponds.

Vorteilhaft für den Antrieb des Schlittens 1 ist auch die Anwendung einer Zahnstange, die an der Transportbahn des Schlittens 1 montiert ist. Bei dieser alternativ anwendbaren Einrichtung braucht der Antriebsmotor 5 am Biegetisch 10 nicht fix montiert sein, sondern kann auch am Schlitten 1 angeordnet sein. Das Antriebszahnrad des Antriebsmotors 5 (Getriebemotor) greift dann in die an der Führung 4 befestigte Zahnstange ein, wobei ein Inkrementalgeber 6 ebenfalls am Antriebsmotor 5 oder am Schlitten 1 montiert sein kann.The use of a toothed rack, which is mounted on the transport path of the carriage 1, is also advantageous for driving the carriage 1. In this alternatively applicable device, the drive motor 5 does not need to be fixedly mounted on the bending table 10, but can also be arranged on the slide 1. The drive gear of the drive motor 5 (geared motor) then engages in the toothed rack fastened to the guide 4, it being possible for an incremental encoder 6 to also be mounted on the drive motor 5 or on the slide 1.

Während der Biegehebel 9 den Abschnitt 3' der Hohlprofilleiste 3 nach oben biegt, löst sich der am Schlitten 1 montierte Greifer 2 von der Hohlprofilleiste 3. Der Schlitten 1 fährt dann mit hoher Geschwindigkeit in seine Ausgangslage (Referenzpunkt) zurück, und der Greifer 2 erfaßt die Hohlprofilleiste 3 wieder reibungsschlüssig. Darauf kann der Schlitten 1, nachdem der Biegehebel 9 zurückgeschwenkt wurde, wieder in Richtung Biegehebel 9 genau um die vom Prozeßrechner vorgegebene Wegstrecke verfahren und die Hohlprofilleiste 3 entsprechend verschieben.While the bending lever 9 bends the section 3 'of the hollow profile bar 3 upwards, the gripper 2 mounted on the slide 1 detaches from the hollow profile bar 3. The slide 1 then moves back to its starting position (reference point) at high speed, and the gripper 2 is gripped the hollow profile strip 3 again frictionally. Thereupon, after the bending lever 9 has been pivoted back, the carriage 1 can again move in the direction of the bending lever 9 exactly by the distance specified by the process computer and move the hollow profile strip 3 accordingly.

Wenn die Hohlprofilleiste 3 in die Vorrichtung von einer dieser vorgeschalteten Zuführeinrichtung bis zum Anschlag 7 zugeführt wird, kann die Förderbahn 4 eine einfache Gleitbahn sein.If the hollow profile strip 3 is fed into the device from a feed device upstream of this up to the stop 7, the conveyor track 4 can be a simple slideway.

Parallel zur Profiltransportebene der nach rückwärts geneigten Stützwand 10 befindet sich in der unteren horizontalen Ebene eine Führung, über welche eine Transporteinrichtung verfährt, wobei die gefahrene Strecke erfaßt wird.Parallel to the profile transport plane of the backward inclined support wall 10, there is a guide in the lower horizontal plane, via which a transport device travels, the distance traveled being recorded.

Am verfahrbaren Schlitten 1, der schlupffrei über ein Antriebsmittel 5 (Getriebemotor) angetrieben wird, ist wenigstens ein Greifer 2 montiert, der die Hohlprofilleiste 3 reibungsschlüssig erfaßt. Die Einheit Schlitten 1 und Greifer 2 transportiert die Hohlprofilleiste 3 in Richtung Biegehebel 9. Ein Inkrementalgeber 6, der am Antriebsmotor 5 oder am Transportschlitten 1 montiert ist, greift formschlüssig in einen Transportzahnriemen oder eine Zahnstange ein und erfaßt die vom Schlitten 1 effektiv gefahrene Strecke, die ein Prozeßrechner vorgibt.At least one gripper 2 is mounted on the movable slide 1, which is driven in a slip-free manner by a drive means 5 (geared motor), which grips the hollow profile bar 3 in a friction-locked manner. The unit slide 1 and gripper 2 transports the hollow profile strip 3 in the direction of the bending lever 9. An incremental encoder 6, which is mounted on the drive motor 5 or on the transport slide 1, engages positively in a transport toothed belt or a rack and detects the distance effectively traveled by the slide 1, which a process computer specifies.

Nach Erreichen des Endabschaltpunktes, d.h. wenn die Hohlprofilleiste 3 der Länge des Rahmenschenkels entsprechend vom Schlitten 1, der mit seinem Greifer 2 die Hohlprofilleiste 3 festhält, vorgeschoben wurde, drückt der Biegehebel 9 den Abschnitt 3' der Hohlprofilleiste 3 gegen das Biegewiderlager 8 (Biegewange) soweit hoch, als vom Prozeßrechner für den Winkel in der gerade zu biegenden Ecke des herzustellenden Abstandhalterrahmens bestimmt wird.After reaching the end stop point, i.e. when the hollow profile bar 3 has been advanced according to the length of the frame leg by the slide 1, which holds the hollow profile bar 3 with its gripper 2, the bending lever 9 presses the section 3 'of the hollow profile bar 3 against the bending abutment 8 (bending beam) as high as from the process computer is determined for the angle in the corner of the spacer frame that is to be bent.

Während der Biegehebel 9 den Abschnitt 3' der Hohlprofilleiste 3 um das Biegewiderlager 8 um den vorgegebenen Winkel, entlang der nach hinten geneigten Stützwand 10 nach oben drückt, öffnet sich der Greifer 2 und der Schlitten 1 fährt zurück in die Ausgangslage, wonach sich der Greifer 2 wieder schließt und die Hohlprofilleiste 3 reibungsschlüssig festhält. Hierauf fährt der Schlitten 1 wieder entsprechend der vorgegebenen Weglänge in Richtung Biegestelle 8/9 vor und die nächste Ecke kann gebogen werden.While the bending lever 9 presses the section 3 'of the hollow profile strip 3 around the bending abutment 8 by the predetermined angle, along the backward inclined support wall 10, the gripper 2 opens and the carriage 1 moves back into the starting position, after which the gripper 2 closes again and holds the hollow profile strip 3 frictionally. The carriage 1 then moves forward in the direction of the bending point 8/9 in accordance with the predetermined path length and the next corner can be bent.

Eine besonders günstige Ausführungsform eines Greifers 2, der den nötigen Reibungsschluß für den genauen Vorschub der Hohlprofilleiste 3 sicherstellt, ist in Fig. 3 gezeigt. Es ist ersichtlich, daß die untere Backe 16 mit einem in Förderrichtung auf wenigstens einer Führungsschiene (nicht gezeigt) geführten Schlitten 11 starr verbunden ist, wogegen die obere Backe 12 über Parallelogrammlenker 13 durch einen Druckmittelmotor 14 von der Backe 16 weg schwenkbar ist. Die bewegliche Backe 12 kann hinter die Stützwand 10 der Vorrichtung verschwenkt werden, so daß sie den Abtransport eines fertig gebogenen Abstandhalterrahmens nicht behindert.A particularly favorable embodiment of a gripper 2, which ensures the necessary frictional engagement for the precise advancement of the hollow profile strip 3, is shown in FIG. 3. It can be seen that the lower jaw 16 with a carriage 11, which is guided in the conveying direction on at least one guide rail (not shown), is rigidly connected, whereas the upper jaw 12 can be pivoted away from the jaw 16 via parallelogram links 13 by a pressure medium motor 14. The movable jaw 12 can be pivoted behind the support wall 10 of the device so that it does not hinder the removal of a finished bent spacer frame.

Claims (10)

  1. Apparatus for bending hollow profile strips (3) into spacer frames for insulation glass panes with a bending device (8, 9), an advance mechanism for the hollow profile strip (3) and a distance measuring device which detects advance thereof, characterised in that the advance mechanism consists of a gripper (2) which can be reciprocated parallel to the advance mechanism by a preselected distance and which can be connected to the hollow profile strip (3) in force-locking relationship, and in that the distance measuring device is an incremental transducer (6) connected to the gripper (2) without slipping.
  2. Apparatus according to claim 1, characterised in that the gripper (2) is connected to a carriage (1, 11) which is displaceable on a guide extending parallel to the direction of advance.
  3. Apparatus according to claim 2, characterised in that the carriage (1, 11) is movable by a drive motor (5) and in that the incremental transducer (6) is coupled to the drive motor (5).
  4. Apparatus according to claim 2 or 3, characterised in that the carriage (1, 11) is coupled to an endless toothed belt driven by the drive motor (5).
  5. Apparatus according to claim 2 or 3, characterised in that the drive motor is mounted on the carriage (1, 11) and has a pinion which meshes with a rack mounted stationarily in the apparatus.
  6. Apparatus according to any of claims 1 to 5, characterised in that a stop (7) which can be lowered to below the conveying device (4) is provided in the region of the bending device (8, 9).
  7. Apparatus according to any of claims 1 to 6, characterised in that the gripper (2) during its stroke towards the bending device (8, 9) is connected to the hollow profile strip (3) in force-locking relationship.
  8. Apparatus according to any of claims 1 to 7, characterised in that the gripper (2) comprises jaws (12, 16) which can be applied to the hollow profile strip (3) at the top and from below.
  9. Apparatus according to claim 8, characterised in that the lower jaw (16) of the gripper (2) is fixed to the carriage (11) and the upper jaw (12) of the gripper (2) is mounted movably on the carriage (11).
  10. Apparatus according to claim 9, characterised in that the movable jaw (12) is connected to the carriage (11) by parallelogram connecting rods (13).
EP91890054A 1990-03-30 1991-03-21 Apparatus for bending hollow frames for isolating glass Expired - Lifetime EP0449801B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT74290A AT398395B (en) 1990-03-30 1990-03-30 DEVICE FOR BENDING HOLLOW PROFILE BARS TO SPACER FRAME FOR INSULATING GLASS
AT184090A AT397775B (en) 1990-09-10 1990-09-10 Bending device for holder profile rails - incorporates displaceable grab for rails
AT742/90 1990-09-10
AT1840/90 1990-09-10

Publications (3)

Publication Number Publication Date
EP0449801A2 EP0449801A2 (en) 1991-10-02
EP0449801A3 EP0449801A3 (en) 1991-11-06
EP0449801B1 true EP0449801B1 (en) 1993-11-18

Family

ID=25593786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890054A Expired - Lifetime EP0449801B1 (en) 1990-03-30 1991-03-21 Apparatus for bending hollow frames for isolating glass

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US (1) US5181412A (en)
EP (1) EP0449801B1 (en)
JP (1) JPH0724890B2 (en)
DE (2) DE59100592D1 (en)
DK (1) DK0449801T3 (en)
ES (1) ES2046883T3 (en)
NO (1) NO179683C (en)

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US10183363B2 (en) 2015-08-04 2019-01-22 Cardinal Ig Company Spacer formation cell
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Also Published As

Publication number Publication date
DE59100592D1 (en) 1993-12-23
US5181412A (en) 1993-01-26
DK0449801T3 (en) 1993-12-27
ES2046883T3 (en) 1994-02-01
NO179683B (en) 1996-08-19
NO911111D0 (en) 1991-03-20
EP0449801A3 (en) 1991-11-06
DE4109549A1 (en) 1991-10-10
NO179683C (en) 1996-11-27
EP0449801A2 (en) 1991-10-02
DE4109549C2 (en) 1994-01-27
NO911111L (en) 1991-10-01
JPH04228234A (en) 1992-08-18
JPH0724890B2 (en) 1995-03-22

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