EP0332674B1 - Edging and folding machine - Google Patents

Edging and folding machine Download PDF

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Publication number
EP0332674B1
EP0332674B1 EP88907641A EP88907641A EP0332674B1 EP 0332674 B1 EP0332674 B1 EP 0332674B1 EP 88907641 A EP88907641 A EP 88907641A EP 88907641 A EP88907641 A EP 88907641A EP 0332674 B1 EP0332674 B1 EP 0332674B1
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EP
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Prior art keywords
metal sheet
shell
machine according
shanks
pressure roll
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EP88907641A
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German (de)
French (fr)
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EP0332674A1 (en
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Albert Engert
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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
    • 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 bending and folding bench for deforming metal sheets with two legs that can be moved relative to one another and on the opening side at least one angle iron and two spaced-apart and parallel operating levers that are connected to a pressure roller that can be moved over the angle iron.
  • Folding benches of the generic type are generally known and they are used to deform and create straight edges on initially essentially flat surfaces. They are used in all areas of sheet metal processing, especially in body construction for the repair and repair of rusted and / or accident-damaged vehicles. In such applications, it is generally necessary not to provide the sheet metal to be inserted into the body with an edge, but also to bend it and to adapt it to the shape of the body part to be replaced and then to insert it. This requires the sheet to be bent, which is in principle not feasible with the aid of folding banks. Bending benches are known per se, but they have to be procured and used independently of folding benches, both for reasons of space and financially Considerations with regard to the acquisition costs are of considerable disadvantage.
  • the invention has set itself the task of creating a device by means of which both bending and bending work can be carried out.
  • one of the legs is curved inwards in a cylindrical shape.
  • a clamping device running in the direction of the cylinder axis.
  • cylindrical means for the leg the shape of a sectoral section from a cylinder jacket.
  • the proposed device is suitable both for edging and bending sheet metal.
  • a sheet is clamped in a manner known per se at the edge between the two legs which can be moved relative to one another, one of which is curved in a cylinder shape, but the other can be flat, and is clamped in parallel via an angle iron fastened to the latter mutually arranged operating levers bent movable pressure roller.
  • the angle iron forms the working edge and the pressure roller moves past it at a comparatively small distance.
  • the initially flat sheet is fixed on the outer surface of the curved leg via the clamping device, then by means of the operating lever, the pressure roller is usually guided past the clamping device in a way that leads at a greater distance so that the sheet metal is grasped and pressed against the cylindrical leg and is thereby curved.
  • the pressure roller grips the sheet metal in the outer regions, that is to say which are located away from the angle iron, and the curvature takes place starting from the clamping device along the leg.
  • the curvature of the leg is specified for one and the same device.
  • the shells used here have to be flatter than the adjoining leg.
  • the radius of curvature can be influenced by the pressure rollers in the operating levers and thus at a distance from their pivot axis. Stepless adjustability is particularly recommended.
  • Another solution that is completely independent of the previously described is that a cylindrical shell together with a first flat sheet metal can be fixed with the help of the legs and the pressure roller can be moved into such a further position that the sheet metal comes to lie against the shell when the operating lever is actuated. This device, which is also proposed, allows both sheet metal to be edged and bent.
  • a sheet is clamped in a manner known per se at the edge between two legs that can be moved relative to one another and bent over a fixed angle iron with the aid of a pressure roller that can be moved via two operating levers arranged parallel to one another.
  • the angle iron forms the working edge and the pressure roller moves at a comparatively small distance from it.
  • the sheet is gripped and clamped by the legs together with a cylindrical shell, the pressure roller is compared to the "folding" work in a more distant position, ie removed from the angle iron and fixed there, so that it Swiveling the operating lever comes to rest on the sheet metal, then moves towards the bowl and is bent against it.
  • the pressure roller grips the sheet metal in the outer regions, ie areas remote from the angle iron, and the curvature takes place starting from the clamping along the shell.
  • the sheet forming the base provides the desired uniform curvature of the sheet.
  • the term "cylindrical shell” is understood to mean all those curved surfaces which are of the same construction in one, the axis direction. When clamped The axis of the shell runs parallel to the angle iron. As a result, one and the same device can be used and used for bending as well as bending in a few simple steps.
  • the workshops can produce repair sheets of approximately the desired shape, which can easily be changed slightly during installation. There is no need to stock up or order body bleaches that are sold and precisely adapted by vehicle manufacturers. Due to the large number of vehicle types and body parts, warehousing can hardly be carried out in practice, so that orders with correspondingly long waiting times are required.
  • the device according to the invention provides a remedy here, since it allows the production of repair sheets with a uniform curvature over a certain length (width) and / or the production of edges without any problems.
  • the device itself is wear-free, robust and, thanks to its universal use, inexpensive to buy.
  • Another method that is completely independent of this is to insert and fix one and the same shell with the same curvature over the entire length in different height positions between the legs and thereby influence the curvature of the sheet in the clamping area.
  • the flat sheet that runs approximately symmetrically between the two legs in the starting position is curved all the more, i.e. the steeper the deeper the bowl is inserted between the legs. If the bowl is pushed more outwards, the curvature of the sheet will be flatter.
  • a displacement of the shell does not necessarily result in a change in the position of the pressure roller, since a contact with the sheet metal is sufficient and a direct movement along or parallel to the shell does not have to take place.
  • the plate is bent by the pressure roller according to the shape of the shell.
  • a bolt which extends through both legs in the center in the azimuthal direction and is equipped with a screwing device, so that both legs can be pressed against one another in the manner of a screw clamp.
  • the use of a bolt can not only serve to press the two legs towards one another, but can also contribute to the formation of the clamping device, in which one end of each bolt is guided outwards through the cylindrical leg and a rod connecting both is arranged thereon. who can press firmly against the sheet metal inside as well as possibly additionally against the shell located there when pressing the screw device and thereby clamp it. It is a simple implementation of a clamping device.
  • the two legs 1, 2 are connected to one another via an axis of rotation 3 and can therefore be moved relative to one another.
  • an angle iron 4, 5 is attached to the opening side, between which a gap is formed, the clear width of which can be changed and adjusted by moving the legs 1, 2.
  • the device described so far is symmetrical with respect to a plane running through the axis of rotation 3.
  • an operating lever 6 is fastened via a pivot point 7, which extends essentially towards and beyond the angle irons 4, 5, is provided with a handle 8 at the end and is connected to a pressure roller 9 which runs perpendicular to the plane of the drawing and with its opposite end is connected to a further operating lever that cannot be seen here.
  • pivoting takes place in the direction of the arrow.
  • the pressure roller 9 can be moved in parallel due to appropriate devices attached to the operating lever 6.
  • the pressure roller is in the upper position, ie the position remote from the pivot point, and is moved to the lower position in order to carry out bending work.
  • both a shell 10 and an initially flat plate 11 are inserted and clamped at the end.
  • the operating lever is turned over, the pressure roller 9 rests on sheet metal 11 and is pressed against the shell 11 when the operating lever continues to move and takes on its shape. It is entirely sufficient if the sheet metal 11 is gripped and guided only by the pressure roller 9 at the edge. Movement along or parallel to the shell 10 is not required. This proves to be an advantage with height adjustments of the shell 10.
  • both legs 1, 2 takes place in the exemplary embodiment shown via a bolt 12 penetrating both, which is provided on one side with a stop surface 13 and at the opposite end with a screw 14, so that the two legs 1, 2 in the manner of a screw clamp can be pressed against each other.
  • the bolt 12 extends through the legs 1, 2 outside the working width.
  • the device just shown and described in its function can be converted to perform bending work in a manner known per se in that the pressure roller 9 is displaced towards the operating lever 6 in the direction of the angle iron 4, 5 and the plate 11 alone, ie without shell 10 is clamped and held between the angle irons 4, 5, which serve as working edges.
  • the result is a device that can be used on the one hand for folding and for bending sheets of different curvatures.

Abstract

In a device for edging and folding metal sheets, a press roller (9) secured to operating levers (6) can be brought into at least one additional position. The metal sheet (11), together with a cylindrical shell (10) is fixed between the flanges (1, 2) or on the outer surface of a curved flange (1, 2), so that when the operating lever (6) is actuated, the metal sheet (11) comes to bear against the shell (10) or the curved flange (1, 2).

Description

Die Erfindung betrifft eine Biege- und Abkantbank zur Verformung von Blechen mit zwei relativ gegeneinander bewegbaren Schenkeln und öffnungsseitig wenigstens einem Winkeleisen sowie zwei im Abstand angeordneten und parallel zueinander verlaufenden Bedienungshebeln, die mit einer über das Winkeleisen hinweg bewegbaren Druckwalze in Verbindung stehen.The invention relates to a bending and folding bench for deforming metal sheets with two legs that can be moved relative to one another and on the opening side at least one angle iron and two spaced-apart and parallel operating levers that are connected to a pressure roller that can be moved over the angle iron.

Abkantbänke der gattungsgemäßen Art sind allgemein bekannt und sie dienen der Verformung und Schaffung gerader Kanten an zunächst im wesentlichen ebenen Flächen. Auf allen Gebieten der Blechbearbeitung werden sie eingesetzt, insbesondere auch im Karosseriebau bei Instandsetzung und Reparatur von angerosteten und/oder unfallbeschädigten Fahrzeugen. Bei derartigen Einsatzzwecken ist es in der Regel erforderlich, das in die Karosserie einzusetzende Blech nicht mit einer Kante zu versehen sondern zusätzlich zu krümmen und an die Form des zu ersetzenden Karosserieteiles anzupassen und dann einzufügen. Dies erfordert ein Biegen des Bleches, was mit Hilfe von Abkantbänken prinzipiell nicht durchführbar ist. Zwar sind Biegebänke an sich bekannt, die jedoch unabhängig von Abkantbänken beschafft und eingesetzt werden müssen, was sowohl aus Platzgründen als auch aufgrund finanzieller Überlegungen im Hinblick auf die Anschaffungskosten von erheblichem Nachteil ist.Folding benches of the generic type are generally known and they are used to deform and create straight edges on initially essentially flat surfaces. They are used in all areas of sheet metal processing, especially in body construction for the repair and repair of rusted and / or accident-damaged vehicles. In such applications, it is generally necessary not to provide the sheet metal to be inserted into the body with an edge, but also to bend it and to adapt it to the shape of the body part to be replaced and then to insert it. This requires the sheet to be bent, which is in principle not feasible with the aid of folding banks. Bending benches are known per se, but they have to be procured and used independently of folding benches, both for reasons of space and financially Considerations with regard to the acquisition costs are of considerable disadvantage.

Hiervon ausgehend hat sich die Erfindung die Schaffung einer Vorrichtung zur Aufgabe gemacht, mit deren Hilfe sowohl Abkant- als auch Biegearbeiten durchgeführt werden können.Proceeding from this, the invention has set itself the task of creating a device by means of which both bending and bending work can be carried out.

Die gestellte Aufgabe löst die Erfindung durch zwei unabhängig voneinander realisierbare Vorschläge, wie in den Unabhöngigen Ansprüchen 1 und 4 dargestellt. Bei der einen zunächst beschriebenen Lösung ist einer der Schenkel zylinderförmig nach innen gekrümmt. Auf seiner Außenfläche befindet sich eine in Richtung der Zylinderachse verlaufende Klemmvorrichtung. Der Begriff "zylinderförmig" meint für den Schenkel die Form eines sektoriellen Ausschnitts aus einem Zylindermantel.The object is achieved by the invention by two independently implementable proposals, as shown in the independent claims 1 and 4. In the first solution described, one of the legs is curved inwards in a cylindrical shape. On its outer surface there is a clamping device running in the direction of the cylinder axis. The term "cylindrical" means for the leg the shape of a sectoral section from a cylinder jacket.

Die vorgeschlagene Vorrichtung eignet sich sowohl zum Kanten als auch Biegen von Blechen. Für die Funktion "Abkanten" wird in an sich bekannter Weise ein Blech randseitig zwischen den beiden relativ gegeneinander bewegbaren Schenkeln, wovon der eine zylinderförmig gekrümmt, der andere jedoch eben sein kann, eingeklemmt und über ein an diesen befestigtes Winkeleisen mit Hilfe der über zwei parallel zueinander angeordneten Bedienungshebeln bewegbare Druckwalze umgebogen. Das Winkeleisen bildet die Arbeitskante und die Druckwalze bewegt sich in vergleichsweise geringem Abstand daran vorbei.The proposed device is suitable both for edging and bending sheet metal. For the "folding" function, a sheet is clamped in a manner known per se at the edge between the two legs which can be moved relative to one another, one of which is curved in a cylinder shape, but the other can be flat, and is clamped in parallel via an angle iron fastened to the latter mutually arranged operating levers bent movable pressure roller. The angle iron forms the working edge and the pressure roller moves past it at a comparatively small distance.

Für die Funktion "Biegen" wird das zunächst ebene Blech an der Außenfläche des gekrümmten Schenkels über die Klemmvorrichtung festgelegt, anschließend durch die Bedienungshebel die Druckwalze auf einem i.d.R. in einer größeren Entfernung vorbeiführenden Weg so an der Klemmvorrichtung vorbeigeführt, daß das Blech erfaßt wird und gegen den zylinderförmigen Schenkel gepreßt und hierdurch gekrümmt wird. Die Druckwalze ergreift das Blech in den äußeren, d.h. vom Winkeleisen entfernt liegenden Bereichen und die Krümmung erfolgt ausgehend von der Klemmvorrichtung entlang dem Schenkel.For the "bending" function, the initially flat sheet is fixed on the outer surface of the curved leg via the clamping device, then by means of the operating lever, the pressure roller is usually guided past the clamping device in a way that leads at a greater distance so that the sheet metal is grasped and pressed against the cylindrical leg and is thereby curved. The pressure roller grips the sheet metal in the outer regions, that is to say which are located away from the angle iron, and the curvature takes place starting from the clamping device along the leg.

Ein Vorteil dieses Lösungsvorschlags gegenüber der später geschilderten Lösung besteht darin, daß jeder beliebige Bereich eines Bleches gebogen werden kann. Die Verschiebung des Bleches in der Klemmvorrichtung ist beliebig.An advantage of this proposed solution compared to the solution described later is that any area of a sheet can be bent. The displacement of the sheet in the clamping device is arbitrary.

Die Krümmung des Schenkels ist bei ein- und derselben Vorrichtung vorgegeben. Zur Beeinflussung der Krümmungsradien wird deshalb vorgeschlagen, zwischen dem Blech und dem Schenkel zylindrische Schalen mit einzuklemmen, an die das Blech dann mit Hilfe der Druckplatte anzuliegen kommt. Sie ermöglichen eine Beeinflussung und Änderung des erzeugten Krümmungsradius am Werkstück. Selbstverständlich müssen die hierbei eingesetzten Schalen flacher als der daran anliegende Schenkel gewählt sein.The curvature of the leg is specified for one and the same device. In order to influence the radii of curvature, it is therefore proposed to clamp cylindrical shells between the sheet and the leg, to which the sheet then comes to rest with the aid of the pressure plate. They allow you to influence and change the radius of curvature generated on the workpiece. Of course, the shells used here have to be flatter than the adjoining leg.

Weiter läßt sich eine Beeinflussung des Krümmungsradius dadurch erreichen, daß die Druckwalzen in den Bedienungshebeln und damit im Abstand zu deren Schwenkachse. Besonders empfiehlt sich die stufenlose Verstellbarkeit.
Eine von der bisher beschriebenen völlig unabhängige weitere Lösung besteht darin, daß eine zylindrische Schale zusammen mit einem zunächst ebenen Blech mit Hilfe der Schenkel festlegbar ist und die Druckwalze in eine solche weiteren Position verbringbar ist, daß bei Betätigung der Bedienungshebel das Blech an die Schale anzuliegen kommt.
Auch diese ebenso vorgeschlagene Vorrichtung erlaubt sowohl ein Kanten als auch Biegen von Blechen. Für die Funktion "Abkanten" wird in an sich bekannter Weise ein Blech randseitig zwischen zwei relativ gegeneinander bewegbare Schenkel eingeklemmt und über ein an diesen befestigten Winkeleisen mit Hilfe einer über zwei parallel zueinander angeordneten Bedienungshebeln bewegbare Druckwalze umgebogen. Das Winkeleisen bildet die Arbeitskante und die Druckwalze bewegt sich in vergleichsweise geringem Abstand dazu.
Für die Funktion "Biegen" wird das Blech zusammen mit einer zylindrischen Schale randseitig durch die Schenkel erfaßt und festgeklemmt, die Druckwalze im Vergleich zum Arbeitsprozeß "Abkanten" in eine weiter außen befindliche d.h. vom Winkeleisen entfernte Position verbracht und dort festgelegt, so daß sie bei Verschwenken der Bedienungshebel am Blech anzuliegen kommt, sich dann auf die Schale zu bewegt und daran anliegend gekrümmt wird. Die Druckwalze ergreift das Blech in den äußeren, d.h. vom Winkeleisen entfernten Bereichen und die Krümmung erfolgt ausgehend von der Klemmung entlang der Schale. Durch die die Unterlage bildende Schale erhält man die gewünschte gleichmäßige Krümmung des Bleches. Im Sinne der Erfindung sind unter dem Begriff "zylindrische Schale" all jene gekrümmten Flächen zu verstehen, die in einer, der Achsenrichtung, von gleichem Aufbau sind. Im festgeklemmten Zustand verläuft die Achse der Schale parallel zum Winkeleisen.
Im Ergebnis kann ein und die selbe Vorrichtung durch einige wenige Handgriffe neben dem Abkanten auch dem Biegen verwendet und eingesetzt werden. Von entscheidender Bedeutung ist weiter, daß für viele Verwendungszwecke Bleche von vergleichsweise geringer Blechstärke - hierunter sind alle Bleche bis maximal 1 mm Dicke zu verstehen - nicht exakt gekrümmt und gebogen werden müssen, da beim Einbau noch gewisse Korrekturen per Hand oder über die aufgrund zunächst punktuell erfolgender Befestigung selbsttätig vornehmbar sind. Die Werkstätten können mit Hilfe der erfindungsgemäßen Vorrichtung Reparaturbleche von etwa der gewünschten Form herstellen, welche ohne weiteres noch beim Einbau geringfügig verändert werden können. Es erübrigt sich die Bevorratung oder Bestellung von durch die Fahrzeughersteller vertriebenen und exakt angepaßten Karosseriebleichen. Die Lagerhaltung ist aufgrund der Vielzahl der Fahrzeugtypen und der Karosserieteile in der Praxis kaum durchführbar, so daß Bestellungen mit entsprechend langen Wartezeiten erforderlich sind. Die erfindungsgemäße Vorrichtung schafft hier Abhilfe, da sie die Herstellung von Reparaturblechen mit gleichmäßiger Krümmung über eine gewisse Länge (Breite) und/oder die Herstellung von Kanten ohne weiteres zuläßt. Die Vorrichtung selbst ist verschleißfrei, robust und durch den universellen Einsatz preisgünstig in der Anschaffung.Furthermore, the radius of curvature can be influenced by the pressure rollers in the operating levers and thus at a distance from their pivot axis. Stepless adjustability is particularly recommended.
Another solution that is completely independent of the previously described is that a cylindrical shell together with a first flat sheet metal can be fixed with the help of the legs and the pressure roller can be moved into such a further position that the sheet metal comes to lie against the shell when the operating lever is actuated.
This device, which is also proposed, allows both sheet metal to be edged and bent. For the "folding" function, a sheet is clamped in a manner known per se at the edge between two legs that can be moved relative to one another and bent over a fixed angle iron with the aid of a pressure roller that can be moved via two operating levers arranged parallel to one another. The angle iron forms the working edge and the pressure roller moves at a comparatively small distance from it.
For the "bending" function, the sheet is gripped and clamped by the legs together with a cylindrical shell, the pressure roller is compared to the "folding" work in a more distant position, ie removed from the angle iron and fixed there, so that it Swiveling the operating lever comes to rest on the sheet metal, then moves towards the bowl and is bent against it. The pressure roller grips the sheet metal in the outer regions, ie areas remote from the angle iron, and the curvature takes place starting from the clamping along the shell. The sheet forming the base provides the desired uniform curvature of the sheet. For the purposes of the invention, the term "cylindrical shell" is understood to mean all those curved surfaces which are of the same construction in one, the axis direction. When clamped The axis of the shell runs parallel to the angle iron.
As a result, one and the same device can be used and used for bending as well as bending in a few simple steps. It is also of crucial importance that, for many purposes, sheets of comparatively low sheet thickness - this includes all sheets up to a maximum thickness of 1 mm - do not have to be precisely curved and bent, since during the installation certain corrections are made either manually or by means of the punctual first the fastening is carried out automatically. With the help of the device according to the invention, the workshops can produce repair sheets of approximately the desired shape, which can easily be changed slightly during installation. There is no need to stock up or order body bleaches that are sold and precisely adapted by vehicle manufacturers. Due to the large number of vehicle types and body parts, warehousing can hardly be carried out in practice, so that orders with correspondingly long waiting times are required. The device according to the invention provides a remedy here, since it allows the production of repair sheets with a uniform curvature over a certain length (width) and / or the production of edges without any problems. The device itself is wear-free, robust and, thanks to its universal use, inexpensive to buy.

Wie bereits ausgeführt, ist es bei dünneren Blechen nicht zwingend erforderlich die gewünschte Krümmung des Bleches präzise zu erreichen, da Nachkorrekturen bis zu gewissem Umfang ohne weiteres möglich sind. Die Veränderung der Krümmung des zu biegenden Bleches kann durch Verwendung mehrerer Schalen unterschiedlicher Krümmung realisiert werden. Jedoch wird statt dessen als besonders zweckmäßig die Verwendung einer Schale vorgeschlagen, die bereichsweise unterscheidliche Krümmungen aufweist, so daß durch Verändern des Einspannpunktes die Krümmung im Bereich des Winkeleisens veränder- und beeinflußbar ist. Die den Klemmbereichen fernen Zonen des Bleches werden nicht in der gleichen Weise gekrümmt.As already stated, it is not absolutely necessary to achieve the desired curvature of the sheet precisely in the case of thinner sheets, since post-corrections to a certain extent are readily possible possible are. The change in the curvature of the sheet to be bent can be realized by using several shells of different curvature. However, instead, the use of a shell is suggested as particularly expedient, which has different curvatures in some areas, so that the curvature in the area of the angle iron can be changed and influenced by changing the clamping point. The zones of the sheet metal remote from the clamping areas are not curved in the same way.

Eine andere hiervon völlig unabhängige Methode besteht darin, ein und die selbe Schale mit über die gesamte Länge gleicher Krümmung in höhenmäßig unterschiedlichen Positionen zwischen den Schenkeln einzustecken und festzulegen und dadurch die Krümmung des Bleches im Klemmbereich zu beeinflussen. Das in der Ausgangsposition etwa symmetrisch zwischen beiden Schenkeln verlaufende ebene Blech wird um so stärker gekrümmt, d.h. um so steiler, je tiefer die Schale zwischen die Schenkel eingeschoben ist. Wird die Schale mehr nach außen geschoben, wird die Krümmung des Bleches flacher ausfallen. Eine Verschiebung der Schale hat nicht zwingend auch eine Veränderung der Position der Druckwalze zur Folge, da ein Anliegen am Blech ausreichend ist und eine unmittelbare Bewegung entlang oder parallel zur Schale nicht erfolgen muß. Das Blech wird durch die Druckwalze entsprechend der Form der Schale umgebogen.Another method that is completely independent of this is to insert and fix one and the same shell with the same curvature over the entire length in different height positions between the legs and thereby influence the curvature of the sheet in the clamping area. The flat sheet that runs approximately symmetrically between the two legs in the starting position is curved all the more, i.e. the steeper the deeper the bowl is inserted between the legs. If the bowl is pushed more outwards, the curvature of the sheet will be flatter. A displacement of the shell does not necessarily result in a change in the position of the pressure roller, since a contact with the sheet metal is sufficient and a direct movement along or parallel to the shell does not have to take place. The plate is bent by the pressure roller according to the shape of the shell.

Zur Vermeidung von insbesondere im mitteleren Bereich auftretenden Durchbiegungen der Druckwalzen ist ein in radialer Rcithung verlaufender Stabilisator befestigt. Er bedingt eine zusätzliche Abstützung und ein Unterbinden von Durchbiegungen. Bei Verwendung der erfindungsgemäßen Bank, sowohl zum Biegen als auch zum Abkanten muß das Blech bzw. die Schale mit dem Blech zwischen den Schenkeln festgeklemmt werden. Die hierfür erforderliche Kraft kann besipielsweise dadurch aufgebracht werden, daß die Schenkel in einen Schraubstock eingesteckt und mit dessen Hilfe zusammengepreßt werden.In order to avoid deflections of the pressure rollers, particularly in the central area, there is a radial deflection Stabilizer attached. It requires additional support and prevents deflections. When using the bench according to the invention, both for bending and for folding, the sheet or the shell with the sheet must be clamped between the legs. The force required for this can be applied, for example, by inserting the legs into a vice and pressing them together.

Um den beim Abkanten aufzubringenden hohen Anpreßdruck zu verwirklichen, wird unabhängig davon die Anbringung eines Bolzens vorgeschlagen, der beide Schenkel mittig in azimutaler Richtung durchgreift und mit einer Schraubvorrichtung ausgestattet ist, so daß nach Art einer Schraubzwinge beide Schenkel gegeneinander preßbar sind. Die Verwendung eines Bolzens kann nicht nur dazu dienen, die beiden Schenkel aufeinander zu zupressen, sondern darüber hinaus auch zur Bildung der Klemmvorrichtung beitragen, in dem endseitig jeweils ein Bolzen durch den zylinderförmigen Schenkel nach außen geführt ist und hieran ein beide verbindender Stab angeordnet ist, der sich bei Betätigen der Schraubvorrichtung nach Art einer Schraubzwinge gegen das darin befindliche Blech sowie evtl. zusätzlich gegen die dort befindlichen Schale fest anlegen und hierdurch festklemmen kann. Es handelt sich um eine einfache Realisierung einer Klemmvorrichtung.In order to achieve the high contact pressure to be applied when folding, the application of a bolt is proposed regardless of this, which extends through both legs in the center in the azimuthal direction and is equipped with a screwing device, so that both legs can be pressed against one another in the manner of a screw clamp. The use of a bolt can not only serve to press the two legs towards one another, but can also contribute to the formation of the clamping device, in which one end of each bolt is guided outwards through the cylindrical leg and a rod connecting both is arranged thereon. who can press firmly against the sheet metal inside as well as possibly additionally against the shell located there when pressing the screw device and thereby clamp it. It is a simple implementation of a clamping device.

Weitere Vorteile der Erfindung lassen sich dem nachfolgenden Beschreibungsteil entnehmen, in dem anhand der Zeichnung ein Ausführungsbeispiel der Erfindung näher erläutert wird. Sie zeigt in prinzipienhafter Seitenansicht eine erfindungsgemäße Vorrichtung in der Arbeitsposition "Biegen".Other advantages of Invention can be found in the following description, in which an embodiment of the invention is explained in more detail with reference to the drawing. In principle, it shows a device according to the invention in the "bending" working position.

Die beiden Schenkel 1, 2 stehen über eine Drehachse 3 miteinander in Verbindung und sind deshalb relativ gegeneinander bewegbar. An beiden Schenkeln 1, 2 ist an der Öffnungsseite jeweils ein Winkeleisen 4, 5 befestigt, zwischen denen ein Spalt entsteht, dessen lichte Weite durch Bewegung der Schenkel 1, 2 veränder- und einstellbar ist. Die bisher beschriebene Vorrichtung ist in Bezug auf eine durch die Drehachse 3 verlaufende Ebene symmetrisch.The two legs 1, 2 are connected to one another via an axis of rotation 3 and can therefore be moved relative to one another. On both legs 1, 2, an angle iron 4, 5 is attached to the opening side, between which a gap is formed, the clear width of which can be changed and adjusted by moving the legs 1, 2. The device described so far is symmetrical with respect to a plane running through the axis of rotation 3.

Weiter ist ein Bedienungshebel 6 über einen Drehpunkt 7 befestigt, der im wesentlichen auf die Winkeleisen 4, 5 zu und über diese hinaus verläuft, endseitig mit einem Griff 8 versehen ist und mit einer Druckwalze 9 in Verbindung steht, die senkrecht zur Zeichenebene verläuft und mit ihrem gegenüberliegenden Ende mit einem hier nicht zu sehenden weiteren Bedienungshebel verbunden ist. Durch Betätigen des Bedienungshebels 6 erfelgt eine Verschwenkung in Pfeilrichtung. Die Druckwalze 9 kann aufgrund entsprechender, am Bedienungshebel 6 angebrachte Vorrichtungen in ihrer Position parallel verschoben werden. Für den Biegevorgang befindet sich die Druckwalze in der oberen d.h. drehpunktfernen Position und wird zum Durchführen von Abkantarbeiten in die untere Position versetzt.Furthermore, an operating lever 6 is fastened via a pivot point 7, which extends essentially towards and beyond the angle irons 4, 5, is provided with a handle 8 at the end and is connected to a pressure roller 9 which runs perpendicular to the plane of the drawing and with its opposite end is connected to a further operating lever that cannot be seen here. By actuating the operating lever 6, pivoting takes place in the direction of the arrow. The pressure roller 9 can be moved in parallel due to appropriate devices attached to the operating lever 6. For the bending process, the pressure roller is in the upper position, ie the position remote from the pivot point, and is moved to the lower position in order to carry out bending work.

In dem durch die Winkeleisen 4, 5 gebildeten Spalt ist endseitig sowohl eine Schale 10 und darauf anliegend ein zunächst ebenes Blech 11 eingesteckt und festgeklemmt. Zum Durchführen der Biegearbeiten wird der Bedienungshebel umgelegt, die Druckwalze 9 legt sich an Blech 11 an und wird bei Fortsetzung der Bewegung des Bedienungshebels an die Schale 11 angepreßt und nimmt dessen Form an. Es ist völlig ausreichend, wenn das Blech 11 nur randseitig durch die Druckwalze 9 erfaßt und geführt wird. Eine Bewegung entlang oder parallel zur Schale 10 ist nicht erforderlich. Bei Höhenverstellungen der Schale 10 erweist sich dies als Vorteil. Mit Erreichen der Endposition d.h. mit hinreichend vollständigem Durchbiegen des Bleches 11 wird der Bedienungshebel 6 wieder zurück in die in der Zeichnung dargestellte Ausgangsposition verschwenkt. Die Anpreßung beider Schenkel 1, 2 gegeneinander erfolgt im gezeigten Ausführungsbeispiel über einen beide durchgreifenden Bolzen 12, der auf der einen Seite eine Anschlagsfläche 13 und am gegenüberliegenden Ende mit einer Schraube 14 versehen ist, so daß die beiden Schenkel 1, 2 nach Art einer Schraubzwinge gegeneinandergepreßt werden können. Zur Vermeidung von Behinderungen beim Arbeiten und beim tiefen Einstecken der Schale 10 durchgreift der Bolzen 12 die Schenkel 1, 2 außerhalb der Arbeitsbreite.In the gap formed by the angle irons 4, 5, both a shell 10 and an initially flat plate 11 are inserted and clamped at the end. To carry out the bending work, the operating lever is turned over, the pressure roller 9 rests on sheet metal 11 and is pressed against the shell 11 when the operating lever continues to move and takes on its shape. It is entirely sufficient if the sheet metal 11 is gripped and guided only by the pressure roller 9 at the edge. Movement along or parallel to the shell 10 is not required. This proves to be an advantage with height adjustments of the shell 10. When the end position is reached i.e. with sufficiently complete bending of the sheet 11, the operating lever 6 is pivoted back into the starting position shown in the drawing. The pressing of both legs 1, 2 against each other takes place in the exemplary embodiment shown via a bolt 12 penetrating both, which is provided on one side with a stop surface 13 and at the opposite end with a screw 14, so that the two legs 1, 2 in the manner of a screw clamp can be pressed against each other. To avoid disabilities when working and when deeply inserting the shell 10, the bolt 12 extends through the legs 1, 2 outside the working width.

Die soeben gezeigt und in ihrer Funktion geschilderte Vorrichtung läßt sich zum Durchführen von Abkantarbeiten in an sich bekannter Weise dadurch umstellen, daß die Druckwalze 9 auf den Bedienungshebel 6 in Richtung auf die Winkeleisen 4, 5 zu versetzt wird und das Blech 11 allein d.h. ohne Schale 10 zwischen den Winkeleisen 4, 5 eingeklemmt und festgehalten wird, die als Arbeitskanten dienen.The device just shown and described in its function can be converted to perform bending work in a manner known per se in that the pressure roller 9 is displaced towards the operating lever 6 in the direction of the angle iron 4, 5 and the plate 11 alone, ie without shell 10 is clamped and held between the angle irons 4, 5, which serve as working edges.

Im Ergebnis erhält man eine Vorrichtung die einerseits zum Abkanten als auch zum Biegen von Blechen unterschiedlicher Krümmungen einsetzbar ist.The result is a device that can be used on the one hand for folding and for bending sheets of different curvatures.

Claims (9)

1. Folding and edging machine for shaping metal sheets having two shanks (1, 2) movable with respect to each other and on the opening side at least one angle plate as well as, disposed at a distance and running parallel to each other, two operating handles, which are connected to a pressure roll (9) movable beyond said angle plate, wherein one of the shanks (1, 2) is curved inwards to form a cylinder, upon whose exterior surface the initially flat metal sheet (11) is affixable by means of a clamping device, whereby the pressure roll (9) can be moved into a further position such that upon actuation of the operating handle (6) the metal sheet (11) comes into contact with said cylindrical shank (1 or 2).
2. Machine according to claim 1 wherein a cylindrical shell is insertable between metal sheet (11) and shank (1, 2).
3. Machine according to claim 1 or 2 wherein pressure roll (9) is adjustable.
4. Bending and edging machine for shaping metal sheet having two shanks (1, 2) that are movable with respect to each other and on the opening side at least one angle plate as well as, disposed at a distance to each other and moving in parallel, two operating handles, which are connected to a pressure roll (9) movable beyond said angle plate, wherein a cylindrical shell (10) is fixable together with an initially flat metal sheet (11) with aid of shanks (1, 2), whereby pressure roll (9) may be moved into a further position such that upon actuation of the operating handle (6) the metal sheet (11) comes into contact with said shell (10).
5.Machine according to one of claims 1 to 4 wherein the curvature of the metal sheet (11) is adjustable by more or less deep insertion of said shell (10).
6. Machine according to one of claims 1 to 5 wherein the curvature of said shell (10) is variable.
7. Machine according to one of claims 1 to 6 wherein a stabilizer running radially is installed on said pressure roll (9).
8. Machine according to one of claims 1 to 7 wherein said shanks (1, 2) are inserted in a vice and are pressed together.
9. Machine according to one of claims 1 to 8 wherein said shanks (1, 2) and the clamping device are penetrated by a bolt and pressed together.
EP88907641A 1987-09-08 1988-09-08 Edging and folding machine Expired - Lifetime EP0332674B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3730014 1987-09-08
DE19873730014 DE3730014A1 (en) 1987-09-08 1987-09-08 BENDING AND BENDING BENCH

Publications (2)

Publication Number Publication Date
EP0332674A1 EP0332674A1 (en) 1989-09-20
EP0332674B1 true EP0332674B1 (en) 1991-04-10

Family

ID=6335463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88907641A Expired - Lifetime EP0332674B1 (en) 1987-09-08 1988-09-08 Edging and folding machine

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EP (1) EP0332674B1 (en)
DE (2) DE3730014A1 (en)
WO (1) WO1989002322A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE303138C (en) *
US1442810A (en) * 1920-07-21 1923-01-23 Krump Nic Bending brake
US3147791A (en) * 1961-05-31 1964-09-08 Lyf Alum Inc Brake for bending sheet metal
FR2307592A1 (en) * 1975-04-16 1976-11-12 Lamendour Andre AUTOMATIC SHEET BENDING MACHINE
DE2628249C3 (en) * 1976-06-24 1984-08-02 Heinz 5653 Leichlingen Metje Bending device for offset printing plates
US4282735A (en) * 1979-04-02 1981-08-11 Van Mark Products Corporation Brake for sheet metal or the like

Also Published As

Publication number Publication date
DE3862373D1 (en) 1991-05-16
EP0332674A1 (en) 1989-09-20
WO1989002322A1 (en) 1989-03-23
DE3730014A1 (en) 1989-03-16

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