EP0497780B1 - Process for the two-directional bending of sheet metal - Google Patents

Process for the two-directional bending of sheet metal Download PDF

Info

Publication number
EP0497780B1
EP0497780B1 EP90913054A EP90913054A EP0497780B1 EP 0497780 B1 EP0497780 B1 EP 0497780B1 EP 90913054 A EP90913054 A EP 90913054A EP 90913054 A EP90913054 A EP 90913054A EP 0497780 B1 EP0497780 B1 EP 0497780B1
Authority
EP
European Patent Office
Prior art keywords
bending
cheek
sheet metal
length
bending cheek
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90913054A
Other languages
German (de)
French (fr)
Other versions
EP0497780A1 (en
Inventor
Wolfgang Kutschker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reinhardt Maschinenbau GmbH
Original Assignee
Reinhardt Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6392261&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0497780(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Reinhardt Maschinenbau GmbH filed Critical Reinhardt Maschinenbau GmbH
Priority to AT90913054T priority Critical patent/ATE96062T1/en
Publication of EP0497780A1 publication Critical patent/EP0497780A1/en
Application granted granted Critical
Publication of EP0497780B1 publication Critical patent/EP0497780B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 2, as are known from document EP-A-0338949.
  • the bending beam can only be used in one working direction, that is to say, for example in the case of a pivoting movement from bottom to top in a clockwise direction.
  • a folding machine with machine frame, lower beam, upper beam and bending beam for carrying out the method according to the invention is characterized in that a first rocker is provided on both ends of the bending beam, which is pivotable about the pivot axis of the bending beam that a second rocker on the first rocker is movably mounted, and that a guide is provided on the second rocker which permits a substantially rectilinear movement of the bending beam running perpendicular to the pivot axis, which in turn runs essentially perpendicular to the direction of movement of the second rocker.
  • Figures 1 to 8 each schematically show the essential parts of a folding machine, namely a lower beam 1, an upper beam 2 and a bending beam 3.
  • Die Bending beam 3 is rotatably mounted on the machine frame (not shown) and can be pivoted about a pivot axis S, which in FIGS. 1 to 8 runs perpendicular to the plane of the drawing.
  • a sheet 4 is clamped by lowering the upper cheek 2 in the direction of arrow A, which protrudes with a sheet metal section 5 over the cheeks 1, 2.
  • the bending cheek 3 engages with its upper or bending surface on the underside of the sheet metal section 5.
  • This side is also called the first side of the sheet 4 in the following, it is opposite the upper or second side of the sheet 4.
  • FIG. 1 shows the initial state of the bending process.
  • the bending beam 3 - cf. Figure 2 pivoted counterclockwise by 90 ° upwards (arrow B), whereby the sheet metal section 5 is also bent counterclockwise upwards.
  • Figure 4 - unhindered around this bent sheet metal section 5 can be pivoted further upwards (arrow D) until after a pivoting by a total of about 180 ° the second or upper side of the sheet 4 is turned.
  • the pivoting beam 3 according to FIG.
  • this adjustment direction (arrow E) runs perpendicular to the plane containing the first adjustment direction (arrow C) and the pivot axis S. In FIG. 5, this plane runs perpendicular to the plane of the drawing and parallel to arrow C.
  • the sheet metal section 5a is bent in the opposite direction to the sheet metal section 5 by pivoting the bending cheek 3 by 90 ° in the direction of the arrow F downward or clockwise.
  • the sheet 4 bent in the opposite direction at its edge can now be removed from the folding machine.
  • the swivel bending machine is brought back into its starting position according to FIG. 1 by correspondingly adjusting the bending cheek 3 along the arrows E and F.
  • the bending beam 3 acts on the first sheet metal side during the first bending process and on the second sheet metal side during the second bending process, as can be seen from FIGS. 1 and 7.
  • the adjustment of the bending beam 3 in the first adjustment direction is necessary in order to be able to transfer the bending beam 3 from the first to the second sheet metal side via the bent sheet metal section 5.
  • the bending beam 3 passes over the projecting part of the upper beam 2, the bending beam 3 must also move in the second direction of adjustment in the direction of arrow E. can also be adjusted (cf. FIG.
  • FIG. 9 schematically shows a folding machine 10 which is structurally set up in such a way that the bending method explained with reference to FIGS. 1 to 8 can be carried out on it.
  • FIG. 9 shows only the right side of such a folding machine 10 in a front view. The other side is correspondingly mirror-symmetrical.
  • FIG. 9 the upper beam 2 and the bending beam 3, which are mounted on a machine frame, are shown.
  • the bending beam 3, which can be pivoted about the pivot axis S hides the lower beam 1, which is also mounted in the machine frame 11 and is visible in FIGS. 1 to 8.
  • the upper cheek 2 is for tensioning and releasing the sheet 4 in the direction of arrow G, which corresponds to the arrows A and A1 in Figure 1 and 6, up and down.
  • the upper beam 2 is connected to a hydraulic cylinder 12 attached to the machine frame 11.
  • the pivoting movement of the bending cheek 3 about the pivot axis S is indicated in FIG. 9 by the arrows H, which correspond to the arrows B, D, F in FIGS. 2, 4 and 8.
  • the bending cheek 3 is pivoted with the aid of a motor 13 fastened to the machine frame 11. This engages with a first rocker 14 pivotably mounted about the pivot axis S and can pivot it back and forth perpendicular to the plane of the drawing in FIG.
  • a second rocker 15 is rotatably mounted on the first rocker 14 about an axis 15. The axis 15 lies below the pivot axis S.
  • a piston-cylinder unit 18 is provided, the cylinder 19 of which is rigidly connected to the bending cheek 3 and the piston rod 21 of which is connected to the foot 17 , The cylinder 19 can also be guided in a straight line along the arrows I on the second rocker 16.
  • the piston-cylinder unit 18 thus forms a guide for the bending beam 3 in such a way that when the unit 18 is actuated, the bending beam 3 can be displaced in a straight line relative to the second rocker 16, namely away from the pivot axis S or onto it Axis too.
  • This first adjustment movement of the bending beam 3 is shown by the arrows I, which correspond to the arrows C, C1 in Figure 3 and 7 respectively.
  • the second adjustment movement mentioned above which is perpendicular to the plane containing the first adjustment direction I and the pivot axis S (drawing plane of FIG. 9), is realized with the aid of the second rocker 16. If this is pivoted about the axis 15 with the aid of a drive motor 22 indicated by dashed lines in FIG. 9, the bending beam 3 or at least its working surface engaging on the sheet to be bent is adjusted perpendicular to the plane of the drawing in FIG. 9 in accordance with the arrow E in FIG. 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

A process for the two-directional bending of sheet metal comprises the following stages: The bending cheek of a swivel press is laid on a first side of a sheet metal section which is bent about a predetermined angle in a first direction of rotation; the bending cheek is then withdrawn from the bent sheet in a first direction of movement prependicularly to its pivoting axis and pivoted further in the first direction of rotation until it lies against the second side of the sheet opposite the first; the bending cheek is shifted in a second direction perpendicularly to the first; after the bent sheet has been suitably moved between the lower and upper cheeks of the bending machine, the bending cheek is laid against the second side of the sheet, which is bent about a predetermined angle by pivoting the bending cheek in a second direction of rotation opposite that of the first. In the bending machine for implementing this process, the bending cheek is fitted so that it can perform both mutually perpendicular movements in the first and second directions of travel.

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs 1 und eine Vorrichtung nach dem Oberbegriff des Patentanspruchs 2, wie sie aus dem Dokument EP-A-0338949 bekannt sind.The invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 2, as are known from document EP-A-0338949.

Bei den bekannten Blechbiegemaschinen, mit deren Hilfe ein solches Verfahren bisher ausgeführt wird, ist die Biegewange nur in einer Arbeitsrichtung, also beispielsweise bei einer Verschwenkbewegung von unten nach oben im Uhrzeigersinn verwendbar. Dies führt dazu, daß beim gegenläufigen Blechbiegen, wobei also ein erster Blechabschnitt beispielsweise im Uhrzeigersinn und darauf folgend ein weiterer Blechabschnitt im Gegenuhrzeigersinn umgebogen werden soll, das Blech zwischen den einzelnen Biegevorgängen gewendet werden muß. Dies aber ist insbesondere dann, wenn große Blechtafeln von mehreren Metern Seitenlänge so umgedreht werden müssen, daß ihre Ober- zur Unterseite wird, ein umständlicher und zeitraubender Vorgang, der häufig auch durch an der Blechbiegemaschine vorgesehene, automatische Hantierungseinrichtungen behindert ist.In the known sheet metal bending machines, with the aid of which such a method has been carried out to date, the bending beam can only be used in one working direction, that is to say, for example in the case of a pivoting movement from bottom to top in a clockwise direction. This leads to the fact that the sheet metal has to be turned between the individual bending processes in the case of counter-rotating sheet metal bending, that is to say a first sheet metal section being turned for example clockwise and subsequently a further sheet metal section counterclockwise. But this is especially when large metal sheets of several meters side length have to be turned so that their top to bottom, a cumbersome and time-consuming process, which is often hampered by automatic handling devices provided on the sheet metal bending machine.

Es ist Aufgabe der Erfindung, ein gattungsgemäßes Verfahren so zu verbessern, daß ein Wenden des Bleches zwischen zwei gegenläufigen Biegevorgängen vermieden werden kann.It is an object of the invention to improve a method of the generic type in such a way that turning the sheet between two opposing bending processes can be avoided.

Die Aufgabe wird erfindungsgemäß durch die Verfahrensschritte im Patentanspruchs 1 gelöst.The object is achieved by the method steps in claim 1.

Eine Schwenkbiegemaschine mit Maschinengestell, Unterwange, Oberwange und Biegewange zur Durchführung des erfindungsgemäpen Verfahrens zeichnet sich dadurch aus, daß an beiden Stirnseiten der Biegewange jeweils eine erste Schwinge vorgesehen ist, die um die Schwenkachse der Biegewange schwenkbar ist, daß an der ersten Schwinge eine zweite Schwinge beweglich gelagert ist, und daß an der zweiten Schwinge eine Führung vorgesehen ist, welche eine senkrecht zur Schwenkachse verlaufende, im wesentlichen geradlinige Bewegung der Biegewange gestattet, die ihrerseits im wesentlichen senkrecht zur Bewegungsrichtung der zweiten Schwinge verläuft.A folding machine with machine frame, lower beam, upper beam and bending beam for carrying out the method according to the invention is characterized in that a first rocker is provided on both ends of the bending beam, which is pivotable about the pivot axis of the bending beam that a second rocker on the first rocker is movably mounted, and that a guide is provided on the second rocker which permits a substantially rectilinear movement of the bending beam running perpendicular to the pivot axis, which in turn runs essentially perpendicular to the direction of movement of the second rocker.

Die nachstehende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit beiliegender Zeichnung der weiteren Erläuterung. Es zeigen:

Figur 1 bis 8
mehrere, nacheinander erfolgende Schritte beim gegenläufigen Biegen eines Bleches und
Figur 9
eine Vorrichtung zur Durchführung einer gegenläufigen Blechbiegung entsprechend Figur 1 bis 8.
The following description of preferred embodiments of the invention serves in conjunction with the accompanying drawings for further explanation. Show it:
Figure 1 to 8
several successive steps in the opposite bending of a sheet and
Figure 9
a device for performing an opposite sheet metal bending according to Figure 1 to 8.

Die Figuren 1 bis 8 zeigen jeweils schematisch die wesentlichen Teile einer Schwenkbiegemaschine, nämlich eine Unterwange 1, eine Oberwange 2 und eine Biegewange 3. Die Biegewange 3 ist am (nicht dargestellten) Maschinengestell drehbar gelagert und um eine Schwenkachse S verschwenkbar, die in den Figuren 1 bis 8 senkrecht zur Zeichnungsebene verläuft.Figures 1 to 8 each schematically show the essential parts of a folding machine, namely a lower beam 1, an upper beam 2 and a bending beam 3. Die Bending beam 3 is rotatably mounted on the machine frame (not shown) and can be pivoted about a pivot axis S, which in FIGS. 1 to 8 runs perpendicular to the plane of the drawing.

Zwischen Unterwange 1 und Oberwange 2 ist durch Absenken der Oberwange 2 in Richtung des Pfeiles A ein Blech 4 eingespannt, welches mit einem Blechabschnitt 5 über die Wangen 1, 2 vorsteht. Die Biegewange 3 greift mit ihrer Ober- oder Biegefläche an der Unterseite des Blechabschnitts 5 an. Diese Seite wird im folgenden auch die erste Seite des Bleches 4 genannt, sie liegt der Ober- oder zweiten Seite des Bleches 4 gegenüber.Between lower cheek 1 and upper cheek 2, a sheet 4 is clamped by lowering the upper cheek 2 in the direction of arrow A, which protrudes with a sheet metal section 5 over the cheeks 1, 2. The bending cheek 3 engages with its upper or bending surface on the underside of the sheet metal section 5. This side is also called the first side of the sheet 4 in the following, it is opposite the upper or second side of the sheet 4.

Die Figur 1 stellt den Ausgangszustand des Biegeverfahrens dar. In einem ersten Biegeschritt wird die Biegewange 3 - vgl. Figur 2 - im Gegenuhrzeigersinn um 90° nach oben verschwenkt (Pfeil B), wodurch der Blechabschnitt 5 ebenfalls im Gegenuhrzeigersinn nach oben abgebogen wird. Nunmehr wird - vgl. Figur 3 - die Biegewange 3 in einer ersten Verstellrichtung (Pfeil C) senkrecht zu ihrer Schwenkachse S vom abgebogenen Blechabschnitt 5 zurückgezogen, so daß sie - vgl. Figur 4 - unbehindert um diesen abgebogenen Blechabschnitt 5 herum weiter nach oben so weit verschwenkt werden kann (Pfeil D), bis sie nach einer Verschwenkung um insgesamt etwa 180° der zweiten oder Oberseite des Bleches 4 zugekehrt ist. Die Verschwenkung der Biegewange 3 gemäß Figur 4 erfolgt wiederum um deren Schwenkachse S. Wie aus Figur 4 weiterhin hervorgeht, befindet sich nunmehr die Biegewange 3 oberhalb der das Blech 4 festspannenden Oberwange 2, so daß die Biegewange 3 bei einer senkrechten Absenkung aus dieser Stellung auf die Oberwange 2 und nicht auf das Blech 4 treffen würde.FIG. 1 shows the initial state of the bending process. In a first bending step, the bending beam 3 - cf. Figure 2 - pivoted counterclockwise by 90 ° upwards (arrow B), whereby the sheet metal section 5 is also bent counterclockwise upwards. Now - cf. Figure 3 - the bending beam 3 in a first adjustment direction (arrow C) perpendicular to its pivot axis S withdrawn from the bent sheet metal section 5, so that - see. Figure 4 - unhindered around this bent sheet metal section 5 can be pivoted further upwards (arrow D) until after a pivoting by a total of about 180 ° the second or upper side of the sheet 4 is turned. The pivoting beam 3 according to FIG. 4 is again pivoted about its pivot axis S. As can further be seen from FIG. 4, the bending beam 3 is now located above the upper beam 2 which clamps the sheet metal 4, so that the bending beam 3 is lowered from this position when it is lowered vertically the upper cheek 2 and would not hit the sheet 4.

Ausgehend von der Position nach Figur 4 wird anschliepend - vgl. Figur 5 - die Biegewange 3 in einer zweiten Verstellrichtung entlang dem Pfeil E verschoben, bis sie außerhalb des Bereiches der Oberwange 2 gelangt und auf einen vorstehenden Blechabschnitt, der zwischen Unterwange 1 und Oberwange 2 herausragt, abgesenkt werden kann.Starting from the position shown in FIG. 4, the following is followed - cf. Figure 5 - the bending beam 3 moved in a second adjustment direction along the arrow E until it reaches outside the area of the upper beam 2 and can be lowered onto a protruding sheet metal section which protrudes between the lower beam 1 and the upper beam 2.

Die Verstellrichtungen der Biegewange 3 entsprechend den Pfeilen C und E in Figur 3 bzw. 5 verlaufen nur scheinbar parallel zueinander. In Wirklichkeit verläuft der Pfeil C stets parallel zur kleinen und der Pfeil E stets parallel zur großen Seite des die Biegewange 3 auf der Zeichnung schematisch darstellenden Rechtecks. Die beiden Verstellrichtungen gemäß den Pfeilen C und E stehen also immer senkrecht aufeinander, und der Pfeil C hat sich beim Übergang von Figur 3 nach Figur 4 und 5 ebenfalls um 90° mitverschwenkt, wie dies in Figur 5 gestrichelt angedeutet ist.The adjustment directions of the bending cheek 3 according to the arrows C and E in FIGS. 3 and 5 run only apparently parallel to one another. In reality, the arrow C always runs parallel to the small side and the arrow E always runs parallel to the large side of the rectangle schematically representing the bending beam 3 in the drawing. The two adjustment directions according to the arrows C and E are therefore always perpendicular to one another, and the arrow C has also pivoted by 90 ° during the transition from FIG. 3 to FIGS. 4 and 5, as is indicated by dashed lines in FIG.

Um die räumliche Lage der zweiten Verstellrichtung entsprechend dem Pfeil E zu definieren, kann man auch sagen, daß diese Verstellrichtung (Pfeil E) senkrecht zu der die erste Verstellrichtung (Pfeil C) und die Schwenkachse S enthaltenden Ebene läuft. Diese Ebene verläuft in Figur 5 senkrecht zur Zeichnungsebene und parallel zum Pfeil C.In order to define the spatial position of the second adjustment direction according to arrow E, it can also be said that this adjustment direction (arrow E) runs perpendicular to the plane containing the first adjustment direction (arrow C) and the pivot axis S. In FIG. 5, this plane runs perpendicular to the plane of the drawing and parallel to arrow C.

Nachdem die Biegewange 3 die in Figur 5 dargestellte Stellung erreicht hat, wird - vgl. Figur 6 - nach entsprechendem Anheben der Oberwange 2 (Pfeil A₁) das Blech 4 nach rechts vorgeschoben, so daß sich wiederum ein vorstehender Blechabschnitt 5a ergibt, der an den bereits abgebogenen Blechabschnitt 5 anschließt. Wenn das Blech 4 in die Position gemäß Figur 6 vorgeschoben ist, wird die Oberwange 2 wieder abgesenkt (Pfeil A) und das Blech 4 zwischen Unterwange 1 und Oberwange 2 festgespannt. Hierauf wird - vgl. Figur 7 - durch Verschieben in Richtung des Pfeiles C₁ die Biegewange 3 an die Ober- oder zweite Blechseite angelegt. Die Verstellrichtung entsprechend dem Pfeil C₁ ist parallel zum Pfeil C, jedoch entgegengesetzt gerichtet.After the bending beam 3 has reached the position shown in Figure 5, - see. Figure 6 - after lifting the upper cheek 2 (arrow A₁), the sheet 4 advanced to the right, so that in turn there is a protruding sheet section 5a, which is already bent Sheet metal section 5 connects. When the sheet 4 is advanced into the position according to FIG. 6, the upper beam 2 is lowered again (arrow A) and the sheet 4 is clamped between the lower beam 1 and the upper beam 2. Then - cf. Figure 7 - by moving in the direction of arrow C₁, the bending beam 3 is placed on the top or second sheet side. The adjustment direction according to arrow C₁ is parallel to arrow C, but directed in the opposite direction.

Schließlich wird, wie aus Figur 8 hervorgeht, durch Verschwenken der Biegewange 3 um 90° in Richtung des Pfeiles F nach unten oder im Uhrzeigersinn der Blechabschnitt 5a gegenläufig zum Blechabschnitt 5 abgebogen. Das so an seinem Rand gegenläufig abgebogene Blech 4 kann nunmehr aus der Schwenkbiegemaschine entnommen werden. Die Schwenkbiegemaschine wird durch entsprechendes Verstellen der Biegewange 3 entlang den Pfeilen E und F in ihre Ausgangsposition gemäp Figur 1 zurückgebracht.Finally, as can be seen from FIG. 8, the sheet metal section 5a is bent in the opposite direction to the sheet metal section 5 by pivoting the bending cheek 3 by 90 ° in the direction of the arrow F downward or clockwise. The sheet 4 bent in the opposite direction at its edge can now be removed from the folding machine. The swivel bending machine is brought back into its starting position according to FIG. 1 by correspondingly adjusting the bending cheek 3 along the arrows E and F.

Für die Durchführung des anhand der Figuren 1 bis 8 erläuterten, erfindungsgemäpen Blechbiegeverfahrens ist es wesentlich, daß die Biegewange 3 beim ersten Biegevorgang an der ersten und beim zweiten Biegevorgang an der zweiten Blechseite angreift, wie dies aus Figur 1 bzw. 7 ersichtlich ist. Hierzu ist zum einen die Verstellung der Biegewange 3 in der ersten Verstellrichtung (entlang dem Pfeil C; Figur 3) erforderlich, um die Biegewange 3 über den abgebogenen Blechabschnitt 5 heraus von der ersten auf die zweite Blechseite überführen zu können. Da dabei aber die Biegewange 3 (vgl. Figur 4) über den vorspringenden Teil der Oberwange 2 gelangt, muß zum anderen die Biegewange 3 in der zweiten Verstellrichtung in Richtung des Pfeiles E zusätzlich verstellt werden (vgl. Figur 5), so daß sie wiederum auf einen zwischen Unterwange und Oberwange vorstehenden Blechabschnitt 5a angelegt werden kann (vgl. Figur 7). Diese beiden senkrecht aufeinander stehenden, hin- und hergehenden Verstellbewegungen der Biegewange 3 entsprechend den Pfeilen C, C₁ und E, sind also für das erfindungsgemäße Verfahren wesentlich und gewährleisten letzten Endes, daß ein gegenläufiges Blechbiegen ohne Wenden des Bleches möglich ist.For the implementation of the sheet metal bending method according to the invention explained with reference to FIGS. 1 to 8, it is essential that the bending beam 3 acts on the first sheet metal side during the first bending process and on the second sheet metal side during the second bending process, as can be seen from FIGS. 1 and 7. For this purpose, the adjustment of the bending beam 3 in the first adjustment direction (along the arrow C; FIG. 3) is necessary in order to be able to transfer the bending beam 3 from the first to the second sheet metal side via the bent sheet metal section 5. However, since the bending beam 3 (see FIG. 4) passes over the projecting part of the upper beam 2, the bending beam 3 must also move in the second direction of adjustment in the direction of arrow E. can also be adjusted (cf. FIG. 5) so that it can in turn be placed on a sheet metal section 5a projecting between the lower beam and the upper beam (cf. FIG. 7). These two mutually perpendicular, reciprocating adjustment movements of the bending beam 3 according to the arrows C, C₁ and E, are therefore essential for the method according to the invention and ultimately ensure that an opposite sheet metal bending is possible without turning the sheet.

In Figur 9 ist schematisch eine Schwenkbiegemaschine 10 dargestellt, die konstruktiv so eingerichtet ist, daß sich an ihr das anhand der Figuren 1 bis 8 erläuterte Biegeverfahren durchführen läßt. Die Figur 9 zeigt in Vorderansicht lediglich die rechte Seite einer solchen Schwenkbiegemaschine 10. Die andere Seite ist in entsprechender Weise spiegelsymmetrisch ausgebildet.FIG. 9 schematically shows a folding machine 10 which is structurally set up in such a way that the bending method explained with reference to FIGS. 1 to 8 can be carried out on it. FIG. 9 shows only the right side of such a folding machine 10 in a front view. The other side is correspondingly mirror-symmetrical.

In Figur 9 sind die Oberwange 2 sowie die Biegewange 3, die an einem Maschinengestell gelagert sind, dargestellt. Die Biegewange 3, welche um die Schwenkachse S verschwenkbar ist, verdeckt in Figur 9 die ebenfalls im Maschinengestell 11 gelagerte Unterwange 1, die in Figur 1 bis 8 sichtbar ist. Die Oberwange 2 ist zum Spannen und Lösen des Bleches 4 in Richtung des Pfeiles G, der den Pfeilen A und A₁ in Figur 1 bzw. 6 entspricht, auf- und abbeweglich. Hierzu ist die Oberwange 2 mit einem am Maschinengestell 11 befestigten Hydraulikzylinder 12 verbunden. Die Schwenkbewegung der Biegewange 3 um die Schwenkachse S ist in Figur 9 durch die Pfeile H angedeutet, die den Pfeilen B, D, F in Figur 2, 4 bzw. 8 entsprechen.In Figure 9, the upper beam 2 and the bending beam 3, which are mounted on a machine frame, are shown. In FIG. 9, the bending beam 3, which can be pivoted about the pivot axis S, hides the lower beam 1, which is also mounted in the machine frame 11 and is visible in FIGS. 1 to 8. The upper cheek 2 is for tensioning and releasing the sheet 4 in the direction of arrow G, which corresponds to the arrows A and A₁ in Figure 1 and 6, up and down. For this purpose, the upper beam 2 is connected to a hydraulic cylinder 12 attached to the machine frame 11. The pivoting movement of the bending cheek 3 about the pivot axis S is indicated in FIG. 9 by the arrows H, which correspond to the arrows B, D, F in FIGS. 2, 4 and 8.

Die Verschwenkung der Biegewange 3 erfolgt mit Hilfe eines am Maschinengestell 11 befestigten Motors 13. Dieser greift an einer um die Schwenkachse S schwenkbar gelagerten, ersten Schwinge 14 an und kann diese senkrecht zur Zeichnungsebene der Figur 9 hin- und herverschwenken. An der ersten Schwinge 14 ist um eine Achse 15 drehbar eine zweite Schwinge 15 gelagert. Die Achse 15 liegt unterhalb der Schwenkachse S. Zwischen einem vorstehenden Fuß 17 der zweiten Schwinge 16 und der Biegewange 3 ist ein Kolben-Zylinder-Aggregat 18 vorgesehen, dessen Zylinder 19 mit der Biegewange 3 und dessen Kolbenstange 21 mit dem Fuß 17 starr verbunden sind, wobei der Zylinder 19 zusätzlich entlang der Pfeile I an der zweiten Schwinge 16 geradlinig geführt sein kann. Das Kolben-Zylinder-Aggregat 18 bildet auf diese Weise eine Führung für die Biegewange 3 in der Weise, daß bei Betätigung des Aggregats 18 die Biegewange 3 relativ zur zweiten Schwinge 16 geradlinig verschoben werden kann, und zwar von der Schwenkachse S weg oder auf diese Achse zu. Diese erste Verstellbewegung der Biegewange 3 wird durch die Pfeile I därgestellt, die den Pfeilen C, C₁ in Figur 3 bzw. 7 entsprechen.The bending cheek 3 is pivoted with the aid of a motor 13 fastened to the machine frame 11. This engages with a first rocker 14 pivotably mounted about the pivot axis S and can pivot it back and forth perpendicular to the plane of the drawing in FIG. A second rocker 15 is rotatably mounted on the first rocker 14 about an axis 15. The axis 15 lies below the pivot axis S. Between a protruding foot 17 of the second rocker 16 and the bending cheek 3, a piston-cylinder unit 18 is provided, the cylinder 19 of which is rigidly connected to the bending cheek 3 and the piston rod 21 of which is connected to the foot 17 , The cylinder 19 can also be guided in a straight line along the arrows I on the second rocker 16. The piston-cylinder unit 18 thus forms a guide for the bending beam 3 in such a way that when the unit 18 is actuated, the bending beam 3 can be displaced in a straight line relative to the second rocker 16, namely away from the pivot axis S or onto it Axis too. This first adjustment movement of the bending beam 3 is shown by the arrows I, which correspond to the arrows C, C₁ in Figure 3 and 7 respectively.

Die weiter oben erwähnte zweite Verstellbewegung, die senkrecht zu der die erste Verstellrichtung I und die Schwenkachse S enthaltenden Ebene (Zeichnungsebene der Figur 9) erfolgt, wird mit Hilfe der zweiten Schwinge 16 realisiert. Wenn diese mit Hilfe eines in Figur 9 gestrichelt angedeuteten Antriebsmotors 22 um die Achse 15 verschwenkt wird, verstellt sich die Biegewange 3 oder zumindest deren an dem zu biegenden Blech angreifende Arbeitsfläche senkrecht zur Zeichnungsebene der Figur 9 entsprechend dem Pfeil E in Figur 5.The second adjustment movement mentioned above, which is perpendicular to the plane containing the first adjustment direction I and the pivot axis S (drawing plane of FIG. 9), is realized with the aid of the second rocker 16. If this is pivoted about the axis 15 with the aid of a drive motor 22 indicated by dashed lines in FIG. 9, the bending beam 3 or at least its working surface engaging on the sheet to be bent is adjusted perpendicular to the plane of the drawing in FIG. 9 in accordance with the arrow E in FIG. 5.

Es ist möglich, die bei der Ausführungsform nach Figur 9 durch das Kolben-Zylinder-Aggregat 18 gebildete Geradführung auch in anderer Weise auszubilden, beispielsweise durch eine Gleitführung der Biegewange 3, wobei dieser Wange 3 eine besondere Antriebsvorrichtung, z. B. ein Elektromotor mit Getriebespindel, zugeordnet wird. Die zweite Schwinge 16 könnte - statt um die Achse 15 schwenkbar zu sein - auch in anderer Weise, z. B. ebenfalls durch eine Geradführung, verschieblich mit der ersten Schwinge 14 verbunden werden. In jedem Fall muß durch die konstruktive Ausbildung der Schwenkbiegemaschine 10 gewährleistet sein, daß die Verstellmöglichkeiten der Biegewange 3 in den oben im einzelnen erläuterten, ersten und zweiten Verstellrichtungen (Pfeile C und E) gegeben sind.It is possible to form the straight guide formed by the piston-cylinder unit 18 in the embodiment according to FIG. B. an electric motor with gear spindle is assigned. The second rocker 16 could - instead of being pivotable about the axis 15 - in a different way, for. B. also by a straight guide, slidably connected to the first rocker 14. In any case, the constructive design of the folding machine 10 must ensure that the adjustment possibilities of the bending beam 3 are given in the first and second adjustment directions (arrows C and E) explained in detail above.

Claims (2)

  1. Process for the two-directional bending of sheet metal (4) with bending press, by clamping the sheet metal (4) between a lower (1) and an upper cheek (2) and bending a length (5) of the sheet metal (4), which projects beyond these cheeks, through a specified pivotal angle by means of a bending cheek (3) acting on said length of sheet metal (5) and pivotable about a pivotal axis (5), in which process, in a first stage, the bending cheek (3) is applied with a bending face provided thereon to a first side of the projecting length (5) of sheet metal and said length (5) is bent through a specified angle by pivoting of the bending cheek (3) in a first direction of rotation (B), and then, in a second stage, the bending cheek (3) is applied to a second side - opposite the first side - of the length (5) of sheet metal correspondingly advanced between the lower (1) and upper cheek (2), and the bending cheek (3) is pivoted in a direction of rotation contrary to the first, and between the first and second stages the bending cheek (3) is withdrawn from the length (5) of sheet metal in a displacement direction perpendicular to its pivotal axis (S), characterised by the following further stages:
    a) after being withdrawn from the bent length (5) of sheet metal, the bending cheek (3) is pivoted further in the first direction of rotation until, after pivoting through 180° in total, it is positioned with the same bending face as used in the first stage facing the second side of the sheet metal (4), which is opposite the first side of the sheet metal (Figures 3 and 4);
    b) the bending cheek (3) is then displaced in a second displacement direction (E) extending substantially perpendicular to the plane comprising the first displacement direction (C) and the pivotal axis (S), in such a manner that the bending cheek (3) can be applied by its same bending face as mentioned above to the second side of the sheet metal (4) by displacement in the first displacement direction (Figure 5);
    c) finally, after appropriate sliding of the bent sheet metal (5) (Figure 6) between the lower (1) and upper cheek (2), the bending cheek (3) is applied yet again with the same bending face as mentioned above to the second side of the projecting length (5) of sheet metal, by displacement (C₁) in the first displacement direction, and the length (5) of sheet metal is bent through a specified angle by pivoting of the bending cheek (3) in the second direction of rotation (F) contrary to the first direction of rotation (Figures 7 and 8).
  2. Bending press with frame, lower cheek (1), upper cheek (2), and bending cheek (3), for carrying out the process according to claim 1, characterised in that a first rocker (14) is provided on each end face of the bending cheek (3) and is pivotable about the pivotal axis (S) of the bending cheek (3), in that a second rocker (16) is movably mounted on the first rocker (14), and in that on the second rocker (16) a guide (18) is provided which permits substantially rectilinear motion of the bending cheek (3) perpendicular to the pivotal axis (S), the bending cheek (3) itself extending substantially perpendicular to the direction of motion of the second rocker (16).
EP90913054A 1989-10-26 1990-08-30 Process for the two-directional bending of sheet metal Expired - Lifetime EP0497780B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90913054T ATE96062T1 (en) 1989-10-26 1990-08-30 PROCEDURE FOR REVERSE BENDING OF A SHEET METAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3935658 1989-10-26
DE3935658A DE3935658A1 (en) 1989-10-26 1989-10-26 METHOD FOR TURNING A SHEET OPTIMALLY

Publications (2)

Publication Number Publication Date
EP0497780A1 EP0497780A1 (en) 1992-08-12
EP0497780B1 true EP0497780B1 (en) 1993-10-20

Family

ID=6392261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90913054A Expired - Lifetime EP0497780B1 (en) 1989-10-26 1990-08-30 Process for the two-directional bending of sheet metal

Country Status (7)

Country Link
EP (1) EP0497780B1 (en)
JP (1) JP3122126B2 (en)
CA (1) CA2067732C (en)
DE (2) DE3935658A1 (en)
DK (1) DK0497780T3 (en)
ES (1) ES2046795T3 (en)
WO (1) WO1991006383A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047108A1 (en) * 2006-09-27 2008-04-03 Ras Reinhardt Maschinenbau Gmbh Bending machine for sheet material has bending jaw comprising tool support jaw and carrier jaw with support bearings and flexure-limiting components
WO2014206817A1 (en) 2013-06-27 2014-12-31 Ras Reinhardt Maschinenbau Gmbh Handling device and bending installation and method for bending a part to be bent

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007039848B4 (en) * 2007-08-23 2009-10-15 Hans Schröder Maschinenbau GmbH Swivel bending machine for bending a workpiece from sheet metal
JP6269514B2 (en) * 2015-01-13 2018-01-31 トヨタ自動車株式会社 Power line bending method
KR101933532B1 (en) 2018-09-28 2018-12-28 한용운 Panel bending apparatus for door and method for bending a panel for a door using the same
DE102019008118B4 (en) * 2019-11-21 2022-09-15 Wolfram Hochstrate Swivel bending machine, especially for counter bending with a duplex folding beam
CN111036737B (en) * 2019-11-26 2021-08-27 歌尔股份有限公司 Bending and pressing device and bending and pressing method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH392434A (en) * 1963-08-13 1965-05-31 Puell Werner Von Storage for long bending loads on folding machines
FR2502518A1 (en) * 1981-03-26 1982-10-01 Favrin Pierre Folding press for return bends in sheet metal - has folding plate pivoting in two planes against bolster
FR2597398B1 (en) * 1986-04-16 1990-12-07 Favrin Pierre PIVOTING APRON BENDING PRESS
FR2630356A1 (en) * 1988-04-20 1989-10-27 Dimeco Alipresse FOLDING MACHINE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047108A1 (en) * 2006-09-27 2008-04-03 Ras Reinhardt Maschinenbau Gmbh Bending machine for sheet material has bending jaw comprising tool support jaw and carrier jaw with support bearings and flexure-limiting components
DE102006047108B4 (en) * 2006-09-27 2009-09-10 Ras Reinhardt Maschinenbau Gmbh Bending machine for bending flat material
WO2014206817A1 (en) 2013-06-27 2014-12-31 Ras Reinhardt Maschinenbau Gmbh Handling device and bending installation and method for bending a part to be bent
DE102013106764A1 (en) 2013-06-27 2014-12-31 Ras Reinhardt Maschinenbau Gmbh Handling device and bending machine and method for bending a bent part

Also Published As

Publication number Publication date
CA2067732A1 (en) 1991-04-27
DE59003171D1 (en) 1993-11-25
JP3122126B2 (en) 2001-01-09
EP0497780A1 (en) 1992-08-12
ES2046795T3 (en) 1994-02-01
DE3935658A1 (en) 1991-05-02
WO1991006383A1 (en) 1991-05-16
DK0497780T3 (en) 1993-11-29
JPH05500774A (en) 1993-02-18
CA2067732C (en) 2000-02-15

Similar Documents

Publication Publication Date Title
EP0022122B1 (en) Bending machine
CH678023A5 (en)
EP2616197A1 (en) Device and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time
EP0497778B1 (en) Device for bending sheet metal
EP2289643B1 (en) Device for bending elongated workpieces
DE2614177A1 (en) DEVICE FOR BENDING SHEET METALS
DE1935080A1 (en) Method of automatic production of sipes for tire molds and automatic sipe-making machine
DE2802621A1 (en) METAL SHEET MOLDING MACHINE
EP0497780B1 (en) Process for the two-directional bending of sheet metal
EP0249946B1 (en) Method and device for the fabrication of a spacing frame for insulating glass panes
DE2531290B2 (en) Process for bending chain links and chain link bending machine for carrying out the process
DE60100975T2 (en) Flaring device and method
WO1992000154A1 (en) Folding press for bending and shaping sheet metal
CH653928A5 (en) METHOD FOR BENDING PROFILE SHEETS AND DEVICE FOR CARRYING OUT THE METHOD.
DE3938477C2 (en)
DE19706622A1 (en) Straightening machine, especially for steel beams made from sheet metal
DE2310488A1 (en) DOUBLE BENDING DEVICE
DE3220489A1 (en) Screen printing machine
EP0511950B1 (en) Device for placing a tool-carrying frame on rails
DE2727287C2 (en) Device for bending profiled panels
DE2652886A1 (en) Sheet material folding tool - has lower part of auxiliary punch movable relative to main punch and guided by pin engaging in slots
DE3346128C2 (en)
EP1238723A2 (en) Method of bending plates and device for carrying out the method
DE3040400C1 (en) Loading and / or unloading device for presses, punches or the like. Machine tools
DE4315706C2 (en) Press brakes to form fold grooves on sheet metal profiles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920313

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19930309

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 96062

Country of ref document: AT

Date of ref document: 19931115

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILA

REF Corresponds to:

Ref document number: 59003171

Country of ref document: DE

Date of ref document: 19931125

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19931029

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2046795

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940831

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 90913054.4

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: ISLER & PEDRAZZINI AG;POSTFACH 1772;8027 ZUERICH (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080826

Year of fee payment: 19

Ref country code: DK

Payment date: 20080815

Year of fee payment: 19

Ref country code: ES

Payment date: 20080826

Year of fee payment: 19

Ref country code: CH

Payment date: 20080814

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080819

Year of fee payment: 19

Ref country code: AT

Payment date: 20080805

Year of fee payment: 19

Ref country code: FR

Payment date: 20080721

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080903

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080929

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20080729

Year of fee payment: 19

Ref country code: SE

Payment date: 20080814

Year of fee payment: 19

BERE Be: lapsed

Owner name: *REINHARDT MASCHINENBAU G.M.B.H.

Effective date: 20090831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

Ref country code: NL

Ref legal event code: V1

Effective date: 20100301

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100301

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100302

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090831