EP1112788B1 - Device for stepwise bending of metal sheets or strips - Google Patents

Device for stepwise bending of metal sheets or strips Download PDF

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Publication number
EP1112788B1
EP1112788B1 EP99124175A EP99124175A EP1112788B1 EP 1112788 B1 EP1112788 B1 EP 1112788B1 EP 99124175 A EP99124175 A EP 99124175A EP 99124175 A EP99124175 A EP 99124175A EP 1112788 B1 EP1112788 B1 EP 1112788B1
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EP
European Patent Office
Prior art keywords
pressure
cylinder
anvils
pressure cylinder
clamping jaw
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
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EP99124175A
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German (de)
French (fr)
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EP1112788A1 (en
Inventor
Hendricus Hubertus Feijen
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Acera SA
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Acera SA
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Filing date
Publication date
Priority to PT99124175T priority Critical patent/PT1112788E/en
Priority to DK99124175T priority patent/DK1112788T3/en
Priority to EP99124175A priority patent/EP1112788B1/en
Priority to ES99124175T priority patent/ES2174568T3/en
Priority to AT99124175T priority patent/ATE214981T1/en
Application filed by Acera SA filed Critical Acera SA
Priority to DE59901091T priority patent/DE59901091D1/en
Priority to US09/641,287 priority patent/US6497131B1/en
Publication of EP1112788A1 publication Critical patent/EP1112788A1/en
Application granted granted Critical
Publication of EP1112788B1 publication Critical patent/EP1112788B1/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
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/18—Joggling

Definitions

  • the vertical adjustment of the anvils 2 and 3 takes place, for example, by means of no closer Hydraulic cylinder shown, in particular double-acting cylinder.
  • the anvils 2 and 3 are opposite each other on the underside of the pressure plate 23 of the relevant pressure cylinder 18 or 19 a further jaw 30 in a horizontal Directionally mounted, as indicated by double arrows 26.
  • both the anvils 2 and 3 and with this cooperating pressure cylinder 18 and 19 and the pressure cylinder 8 and the interacting with this press cylinder 14 individually and individually adjustable and are adjustable, can be of different depths and also asymmetrical trapezoidal shapes bend, as shown in Figures 4 to 6.
  • trapezoidal cross-sections, the like at the outer end of a curved strip material or sheet only half the height have in the middle or other area, produce, d. H.
  • Such cross sections or shapes are for the Crossbars of profile bars or profile beams, which have a trapezoidal central crossbar exhibit of interest.
  • Such profile bars or beams preferably have one welded construction on, d. H. such carriers have trapezoidal curved webs made of band material, which consists of belts consisting of undeformed band material are welded in.

Abstract

The bending device has a lower pressure cylinder (8) having a piston (9) displaced perpendicular to the horizontal machine bed, with an attached piston rod (12) supporting a pressure surface (13) cooperating with an axially displaced pressure die (15) on the upper side of the metal sheet or sheet metal band (27), held between 2 vertically and horizontally adjustable pressure clamps (2,18; 3,19) on opposite sides of the pressure cylinder and the pressure die.

Description

Die Erfindung betrifft eine Vorrichtung zum schrittweisen Biegen von Metallblech oder aus Metallblech bestehenden Bändern in Trapezform, welche die Merkmale des Oberbegriffes des Patentanspruches 1 aufweist.The invention relates to a device for the gradual bending of sheet metal or from Existing metal sheets in trapezoidal shape, which the characteristics of The preamble of claim 1 has.

Eine Vorrichtung dieser Gattung ist bekannt (DE 198 02 589 A1 und WO 99/37417). Bei dieser bekannten Vorrichtung sind die vor und hinter dem für die Durchführung des Biegevorganges vorgesehenen unteren Druckzylinder und dem diesem zugehörigen Preßstempel angeordneten Ambosse und die diesen zugeordneten oberen Druckzylindern in horizontaler Richtung in der Maschine verschiebbar gelagert, um der durch den Biegevorgang hervorgerufenen Kürzung der Länge des Metallbleches spannungsfrei folgen zu können. Es hat sich jedoch gezeigt, daß eine horizontale Verschiebbarkeit der Ambosse und zugehörigen Druckzylinder konstruktiv sehr aufwending und somit unnötig kostspielig ist. Ein weiteres Problem besteht darin, daß die vorbekannte schrittweise arbeitende Vorrichtung verhältnismäßig langsam ist.A device of this type is known (DE 198 02 589 A1 and WO 99/37417). at this known device are the before and after that for carrying out the Bending process provided lower pressure cylinder and the associated Press rams arranged anvils and the associated upper pressure cylinders mounted in the machine in a horizontal direction so that it can move through the Follow the bending process to shorten the length of the metal sheet without tension to be able to. However, it has been shown that the anvils can be moved horizontally and associated pressure cylinder structurally very complex and therefore unnecessarily expensive is. Another problem is that the prior art works gradually Device is relatively slow.

Der Erfindung liegt die Aufgabe zugrunde, eine Biegevorrichtung der eingangs genannten Gattung einfacher und damit preisgünstiger und wirtschaftlicher betreibbar auszubilden, die zudem eine höhere Arbeitsgeschwindigkeit zuläßt.The invention has for its object a bending device of the aforementioned To train the genus in a simpler and therefore more economical and economical manner, which also allows a higher working speed.

Diese Aufgabe wird mit einer Vorrichtung gelöst, welche die Merkmale des Patentanspruches 1 aufweist.This object is achieved with a device which has the features of Claim 1.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche. Advantageous refinements and developments of the invention are the subject of Dependent claims.

Dadurch, daß nur die zum Festhalten des zu biegenden Bleches vorgesehenen Klemmbacken in horizontaler Richtung verschiebbar gelagert zu werden brauchen, ist eine einfache, jedoch sehr robuste Konstruktion möglich. Auch lassen sich die bewegbar gelagerten Klemmbacken ohne großen Aufwand bei Bedarf austauschen.The fact that only those intended to hold the sheet to be bent Clamping jaws need to be slidably mounted in the horizontal direction is one simple but very robust construction possible. They can also be moved replace the stored jaws with little effort if necessary.

Diese Bauweise führt auch dazu, daß die Vorlauf- und Durchsatzgeschwindigkeit des schrittweise vorlaufenden und zwischen jedem Vorlaufschritt gebogenen Bandmaterial erhöht werden kann, beispielsweise um eine Zehnerpotenz, d. h. etwa um das Zehnfache.This design also means that the lead and throughput speed of the strip material that is gradually advanced and bent between each preliminary step can be increased, for example by a power of ten, i. H. about ten times.

Die Stellzylinder dienen primär dazu, die Klemmbacken nach jedem Klemmschritt in deren horizontale Ausgangsposition zurückzufahren. Wenn die Stellzylinder doppelseitig wirkend ausgebildet sind, können sie aber auch benutzt werden, um die durch den Biegevorgang bedingten horizontalen Bewegungen zumindest zu unterstützen.The actuating cylinders are primarily used for the clamping jaws return to their horizontal starting position after each clamping step. If the actuating cylinders are double-acting, but they can also be used at least the horizontal movements caused by the bending process to support.

Wenn die Ambosse der Biegevorrichtung einzeln senkrecht verstellbar gelagert sind, läßt sich die Vorrichtung vielseitig verwenden, weil unterschieliche Formen wie Trapezformen gebogen werden können und der jeweils gebogene Trapezabschnitt einfacher aus der Vorrichtung entfernt werden kann, auch wenn seine Form asymmetrisch ist.If the anvils of the bending device are individually vertically adjustable, lets the device can be used in a variety of ways because of different shapes such as trapezoidal shapes can be bent and the respective curved trapezoidal section easier from the Device can be removed even if its shape is asymmetrical.

In der Zeichnung ist ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum schrittweisen Biegen von aus Metallblech bestehenden Bändern schematisch dargestellt, und zwar zeigt

Fig. 1
eine Seitenansicht der Vorrichtung, wobei sich die einzelnen Teile derselben in der Ausgangsposition zum Biegen eines Blechabschnittes befinden,
Fig. 2
eine Ansicht wie in Fig. 1, wobei der in der Zeichnung gezeigte Blechabschnitt in einem nächsten Arbeitsschritt in Trapezform gebogen wurde,
Fig. 3
eine Ansicht wie in Fig. 1 und 2, wobei der obere Preßstempel nach Beendigung eines Biegevorganges zurückgezogen wurde und der eine Amboß nach unten weggefahren ist, um den gebogenen Blechabschnitt nach rechts aus der Biegevorrichtung herausbewegen zu können, während die Klemmbacken im Bereich des anderen Ambosses voneinander gelöst sind, um die Vorbewegung des Bleches zu ermöglichen, und
Fig. 4 bis 6
jeweils unterschiedliche Trapezformen, die mit der Vorrichtung gemäß Fig. 1 bis 3 gebogen werden können.
In the drawing, an embodiment of the device according to the invention for the gradual bending of strips consisting of sheet metal is shown schematically, namely shows
Fig. 1
2 shows a side view of the device, the individual parts of which are in the starting position for bending a sheet metal section,
Fig. 2
2 shows a view as in FIG. 1, the sheet metal section shown in the drawing being bent into a trapezoidal shape in a next working step,
Fig. 3
a view as in Fig. 1 and 2, wherein the upper ram has been withdrawn after completion of a bending process and the anvil has moved down to move the bent sheet metal section to the right out of the bending device, while the jaws in the area of the other anvil are separated from each other to allow the sheet to advance, and
4 to 6
each have different trapezoidal shapes that can be bent with the device according to FIGS. 1 to 3.

Auf einem ein Fundament der Vorrichtung bildenden Bett 1 sind im festen Abstand seitlich voneinander zwei Ambosse 2 und 3 befestigt. Diese Ambosse 2 und 3 sind einzeln gesteuert höhenverstellbar gelagert, wie durch senkrechte Doppelpfeile 6 und 7 angedeutet ist.On a bed 1 forming a foundation of the device are at a fixed distance two anvils 2 and 3 attached to each side. These anvils 2 and 3 are individual controlled, height-adjustable, as indicated by vertical double arrows 6 and 7 is.

Die senkrechte Verstellung der Ambosse 2 und 3 erfolgt beispielsweise mittels nicht näher dargestellter hydraulischer Zylinder, insbesondere doppelt wirkender Zylinder.The vertical adjustment of the anvils 2 and 3 takes place, for example, by means of no closer Hydraulic cylinder shown, in particular double-acting cylinder.

Zwischen den Abossen 2 und 3 ist auf dem Bett 1 außerdem ein Druckzylinder 8 befestigt, der in einem festen Abstand zwischen den Ambossen 2 und 3 auf dem Bett 1 angeordnet ist. Dieser Druckzylinder 8 enthält einen einzeln gesteuert axial bzw. senkrecht bewegbaren Kolben 9, dessen senkrechte Bewegbarkeit durch einen Doppelpfeil 10 angedeutet ist.Between the drains 2 and 3 there is also a pressure cylinder 8 on the bed 1 attached to the bed 1 at a fixed distance between the anvils 2 and 3 is arranged. This pressure cylinder 8 contains an individually controlled axially or vertically movable piston 9, the vertical movement by a double arrow 10th is indicated.

Der Druckzylinder 8 weist ein Zylindergehäuse 11 auf, aus dem die Kolbenstange 12 des Kolbens 9 herausragt. Am äußeren Ende der Kolbenstange 12 ist eine als Auflage dienende Gegendruckplatte 13 befestigt.The pressure cylinder 8 has a cylinder housing 11 from which the piston rod 12 of the Piston 9 protrudes. At the outer end of the piston rod 12 is a support serving pressure plate 13 attached.

Sowohl die beiden Ambosse 2 und 3 als auch der Druckzylinder 8 können unabhängig voneinander und damit einzeln betätigt bzw. senkrecht verstellt werden. Both the anvils 2 and 3 and the pressure cylinder 8 can be independent from each other and thus individually operated or adjusted vertically.

Oberhalb des Druckzylinders 8 ist ein Preßzylinder 14 angeordnet, welcher einen Preßstempel 15 aufweist, der ebenfalls einzeln gesteuert senkrecht und koaxial zum Druckzylinder 8 verstellbar ist, wie ein Doppelpfeil 16 andeutet.Above the pressure cylinder 8, a press cylinder 14 is arranged, which one Press ram 15, which is also individually controlled vertically and coaxially to Printing cylinder 8 is adjustable, as indicated by a double arrow 16.

Am unteren Ende und der Gegendruckplatte 13 des Druckzylinders 8 gegenüberliegend ist am Preßstempel 15 eine Druckplatte 17 befestigt, die mit der Gegendruckplatte 13 des Druckzylinders 8 in unten beschriebener Weise zusammenwirkt.At the lower end and the counter pressure plate 13 of the pressure cylinder 8 is opposite attached to the press ram 15 a pressure plate 17 which with the counter pressure plate 13 of the Printing cylinder 8 cooperates in the manner described below.

Oberhalb jedes Ambosses 2 bzw. 3 ist jeweils ein Druckzylinder 18 bzw. 19 angeordnet. Jeder Druckzylinder 18 bzw. 19 weist ein Zylindergehäuse 20 auf, in welchem axial verschiebbar ein Kolben 21 angeordnet ist, dessen aus dem Zylindergehäuse 20 ausfahrbare Kolbenstange 22 an ihrem äußeren Ende eine Druckplatte 23 aufweist, die jeweils einem der Ambosse 2 bzw. 3 gegenüberliegtA pressure cylinder 18 or 19 is arranged above each anvil 2 or 3. Each pressure cylinder 18 or 19 has a cylinder housing 20, in which axially a piston 21 is slidably arranged, the cylinder housing 20 of which extendable piston rod 22 has at its outer end a pressure plate 23 which one of the anvils 2 and 3 is opposite

Die Kolben 21 der Druckzylinder 18 und 19 sind in Richtung der Längsachse des jeweiligen Druckzylinders aus- und einfahrbar, wie durch einen senkrechten Doppelpfeil 25 angedeutet.The pistons 21 of the pressure cylinders 18 and 19 are in the direction of the longitudinal axis of the the respective pressure cylinder can be extended and retracted, as by a vertical double arrow 25 indicated.

Auf jedem Amboß 2 und 3 ist jeweils eine Klemmbacke 24 in horizontaler Richtung verschiebbar gelagert, wie durch Doppelpfeile 4 und 5 angedeutet.On each anvil 2 and 3 there is a jaw 24 in the horizontal direction slidably mounted, as indicated by double arrows 4 and 5.

Den Ambossen 2 und 3 jeweils gegenüberliegend ist an der Unterseite der Druckplatte 23 des betreffenden Druckzylinders 18 bzw. 19 eine weitere Klemmbacke 30 in horizontaler Richtung verschiebbar gelagert, wie durch Doppelpfeile 26 angedeutet.The anvils 2 and 3 are opposite each other on the underside of the pressure plate 23 of the relevant pressure cylinder 18 or 19 a further jaw 30 in a horizontal Directionally mounted, as indicated by double arrows 26.

Die Klemmbacken 24 und 30 sind auf den Ambossen 2 und 3 bzw. an den Druckplatten 23 der Druckzylinder 18 und 19 in jeder beliebigen Weise horizontal verschiebbar gelagert. Vorzugsweise ist jedoch eine Gleitlagerung vorgesehen, um die für die gewünschte Klemmwirkung erforderliche Flächenpressung zwischen den gegeneinander bewegbaren Teilen so gering wie möglich zu halten. The jaws 24 and 30 are on the anvils 2 and 3 and on the pressure plates 23 of the pressure cylinders 18 and 19 horizontally displaceable in any manner stored. However, a sliding bearing is preferably provided in order for the desired clamping effect required surface pressure between each other keep moving parts as low as possible.

Obwohl es für die Funktionsfähigkeit der erfindungsgemäßen Vorrichtung ausreicht, wenn die Klemmbacken 24 und 30 an dem jeweiligen Amboß 2 bzw. 3 und dem jeweiligen Druckzylinder 18 bzw. 19 in horizontaler Richtung frei verschiebbar gelagert sind, ist jede Klemmbacke 24 und 30 jeweils mit einer eigenen Stelleinrichtung, vorzugsweise mit einem doppeltwirkenden hydraulischen Stellzylinder 31, versehen. Jeder Stellzylinder 31 ist mit der jeweiligen Klemmbacke 24 bzw. 30, der er zugeordnet ist, über eine nicht näher dargestellte Verbindung 32 - vorzugsweise mechanisch - verbunden.Although it is sufficient for the functionality of the device according to the invention if the jaws 24 and 30 on the respective anvil 2 or 3 and the respective Printing cylinders 18 and 19 are freely displaceable in the horizontal direction, each Clamping jaws 24 and 30 each have their own actuating device, preferably with a double-acting hydraulic actuating cylinder 31. Each actuating cylinder 31 is not with the respective jaw 24 or 30 to which it is assigned Connection 32 shown in detail - preferably mechanically - connected.

Bei der in Fig. 1 bis 3 schematisch dargestellten Ausführungsform der Biegevorrichtung weisen die Druckplatte 17 sowie die Klemmbacken 24 nach einem Biegeradius für in Trapezform zu biegende Bleche 27 abgerundete Kanten 28 auf. Die jeweils gegenüberliegende Gegendruckplatte 13 bzw. Backen 23 brauchen nicht mit derartigen Biege-Kanten versehen zu sein, weil um deren Kanten keine Biegung des zu verformenden Bandmaterials bzw. Bleches 27 erfolgt. Die Druckplatte 17 und die Klemmbacken 24 können beliebig je nach dem jeweils gewünschten Biegeradius oder Profilmaß des Bandmaterials bzw. Bleches 27 ausgewechselt werden.In the embodiment of the bending device shown schematically in FIGS. 1 to 3 have the pressure plate 17 and the jaws 24 after a bending radius for in Trapezoidal sheets to be bent 27 rounded edges 28. The each opposing pressure plate 13 or jaws 23 do not need such Bending edges to be provided, because no bending of the to be deformed around their edges Strip material or sheet 27 takes place. The pressure plate 17 and the jaws 24 can arbitrarily depending on the required bending radius or profile size of the Strip material or sheet 27 are replaced.

Zum Biegen in Trapezform wird in die gemäß Fig. 1 geöffnete Biegevorrichtung zunächst ein flaches Bandmaterial wie ein Blech 27 von links nach rechts eingeschoben und in der gewünschten Biegeposition angehalten. Sodann werden die Ambosse 2 und 3 sowie die Druckzylinder 18 und 19 ausgefahren, um das zunächst noch flache Bandmaterial bzw. Blech 27 in dem nun zu biegenden Abschnitt zwischen den Klemmbacken 24 der Ambosse 2 und 3 und den Klemmbacken 30 der Druckzylinder 18, 19 festzuhalten. Gleichzeitig oder auch danach werden die Gegendruckplatte 13 des Druckzylinders 8 sowie die Druckplatte 17 des Preßstempels 15 in Position gebracht, damit sie das Bandmaterial bzw. Blech 27 ebenfalls von oben und unten beidseitig erfassen und festhalten.For bending in a trapezoidal shape, first open the bending device shown in FIG. 1 a flat strip material like a sheet 27 inserted from left to right and in the desired bending position stopped. Then the anvils 2 and 3 and the Printing cylinder 18 and 19 extended to the initially flat strip material or Sheet 27 in the section now to be bent between the jaws 24 of the anvils 2 and 3 and the jaws 30 of the pressure cylinders 18, 19 to hold. simultaneously or even after that, the back pressure plate 13 of the pressure cylinder 8 and the Pressure plate 17 of the press ram 15 brought into position so that they the band material or Also hold sheet 27 on both sides from above and below and hold it there.

Danach wird der Preßstempel 15 weiter ausgefahren und zugleich der Kolben 9 des Druckzylinders 8 zurückgezogen, um den zwischen den Ambossen 2 und 3 befindlichen Teil des Bleches 27 zu verformen, wie Fig. 2 zeigt. Dabei wird das Blech 27 in die aus Fig. 2 ersichtliche Trapezform verformt, wobei das Blech 27 über die abgerundeten Kanten 28 der Druckplatte 17 sowie der Klemmbacken 24 schonend und damit ohne ins Gewicht fallende Tiefzieheffekte gebogen wird. Um die sich durch das Biegen ergebende Verkürzung der Länge des Bleches 27 zuglos auszugleichen, werden die auf den Ambossen 2 und 3 sowie den diesen zugeordneten Druckzylindern 18 und 19 angeordneten Klemmbacken 24 bzw. 30 in Richtung der Doppelpfeile 4, 5 und 26 aufeinander zu bewegt.Then the ram 15 is extended further and at the same time the piston 9 of the Printing cylinder 8 withdrawn to the located between the anvils 2 and 3 To deform part of the sheet 27, as shown in FIG. 2. The sheet 27 is in the Fig. 2 visible trapezoidal shape deformed, the sheet 27 over the rounded Edges 28 of the pressure plate 17 and the jaws 24 gently and therefore without ins Weight falling deep-drawing effects is bent. About the result of bending Shortening the length of the sheet 27 to compensate for the, on the Anvils 2 and 3 and the pressure cylinders 18 and 19 assigned to them arranged jaws 24 and 30 in the direction of the double arrows 4, 5 and 26th moving towards each other.

Da das Blech 27 zwischen den einzelnen Klemmbacken frei liegt, behält es hier seine ursprüngliche Form und kann daher gerade verlaufende Flanken eines Trapez-Profils bilden.Since the sheet 27 is exposed between the individual jaws, it keeps its here original shape and can therefore be straight flanks of a trapezoidal profile form.

Obwohl die Bewegung der Klemmbacken 24 und 30 auch antriebslos erfolgen kann, ist es vorzuziehen, diese Bewegungen mittels der Stellzylinder 31 feinfühlig und individuell zu steuern, zumindest aber zu unterstützen.Although the movement of the jaws 24 and 30 can also be without drive, it is prefer these movements by means of the actuating cylinder 31 sensitively and individually control, or at least support.

Ist der beschriebene, einen Biege-Schritt bildende Biegevorgang des Bleches 27 abgeschlossen, kehren die beweglichen Teile der Biegevorrichtung in die in Fig. 1 gezeigt Ausgangsposition zurück und geben das Blech für einen weiteren Vorlaufschritt frei. Dabei wird der Amboß 3 in die in Fig. 3 gezeigte Position zurückgefahren, um den trapezförmig gebogenen Abschnitt des Bleches 27 aus dem Biegebereich der Vorrichtung in Richtung des Pfeiles 29 herausbewegen zu können und damit das Blech 27 um einen weiteren Biegeschritt für den nächsten Biegevorgang - in Fig. 3 gesehen von links nach rechts - vorzubewegen. Der nächste schrittweise Biegevorgang erfolgt wie zuvor beschrieben.Is the described bending process of the sheet 27 forming a bending step completed, the moving parts of the bending device return to that shown in FIG. 1 Starting position back and release the sheet for a further preparatory step. The anvil 3 is moved back into the position shown in Fig. 3 to the Trapezoidal bent section of the sheet 27 from the bending area of the device To be able to move out in the direction of arrow 29 and thus the sheet 27 by one Another bending step for the next bending process - seen from left to in Fig. 3 right - to move forward. The next step-by-step bending process takes place as before described.

Da bei der erfindungsgemäßen Biegevorrichtung sowohl die Ambosse 2 und 3 und die mit diesen zusammenwirkenden Druckzylinder 18 und 19 als auch der Druckzylinder 8 und der mit diesem zusammenwirkende Preßzylinder 14 einzeln und individuell einstellbar und verstellbar sind, lassen sich unterschiedlich tiefe und auch asymmetrische Trapezformen biegen, wie die Figuren 4 bis 6 zeigen. So lassen sich beispielsweise Trapezquerschnitte, die am äußeren Ende eines gebogenen Bandmaterials oder Bleches nur die halbe Höhe wie im mittleren oder sonstigen Bereich aufweisen, herstellen, d. h. Trapezquerschnitte, wie sie in den Figuren 5 und 6 gezeigt sind. Derartige Querschnitte oder Formen sind für die Stege von Profilstäben oder Profilträgern, welche einen trapezförmigen mittleren Steg aufweisen, von Interesse. Derartige Profilstäbe oder Träger weisen vorzugsweise eine geschweißte Konstruktion auf, d. h. derartige Träger haben trapezförmige gebogene Stege aus Bandmaterial, welche zwischen aus unverformtem Bandmaterial bestehende Gurte eingeschweißt sind.Since in the bending device according to the invention both the anvils 2 and 3 and with this cooperating pressure cylinder 18 and 19 and the pressure cylinder 8 and the interacting with this press cylinder 14 individually and individually adjustable and are adjustable, can be of different depths and also asymmetrical trapezoidal shapes bend, as shown in Figures 4 to 6. For example, trapezoidal cross-sections, the like at the outer end of a curved strip material or sheet only half the height have in the middle or other area, produce, d. H. Trapezoidal cross sections, like they are shown in Figures 5 and 6. Such cross sections or shapes are for the Crossbars of profile bars or profile beams, which have a trapezoidal central crossbar exhibit of interest. Such profile bars or beams preferably have one welded construction on, d. H. such carriers have trapezoidal curved webs made of band material, which consists of belts consisting of undeformed band material are welded in.

Zum Biegen des Bleches 27 wird dieses pro Biege-Schritt in drei Abschnitten zwischen miteinander zusammenwirkenden Klemmbacken festgehalten und dazwischen frei verformt, so daß eine Trapezform erzielt wird. Die schräg verlaufenden Flanken der Trapeze erhalten keine Verformung, sondern bleiben gerade, wie das zulaufende Blechmaterial.To bend the sheet 27, this is done in three sections per bending step interacting jaws held and free in between deformed so that a trapezoidal shape is achieved. The sloping flanks of the Trapezoids do not get deformed, but stay straight, like the one coming in Sheet material.

Vorstehend ist die erfindungsgemäße Vorrichtung zum Biegen von nach unten weisenden Trapezabschnitten erläutert worden. Sie könnte aber auch die Trapezabschnitte nach oben ausformen. In diesem Falle müßten lediglich die Druckplatte 17 und die Gegendruckplatte 13 gegeneinander ausgetauscht werden, ebenso wie die Klemmbacken 24 und 30 miteinander zu vertauschen wären.Above is the device according to the invention for bending downward-pointing Trapezoidal sections have been explained. But you could also go up the trapezoidal sections molding. In this case, only the pressure plate 17 and the counter pressure plate would have to 13 can be exchanged for each other, as well as the jaws 24 and 30 would be interchanged.

Claims (7)

  1. Apparatus for progressively bending sheet metal or strips (27) made of sheet metal into a trapezoidal shape, having a bottom pressure cylinder (8), which contains a piston (9), which is displaceable at right angles to a horizontal machine bed (1) and has a pressure rest (13) disposed on its piston rod (12), having a pressure ram (15), which is displaceable in axial direction relative to the bottom pressure cylinder (8), as well as having one pair of clamping elements (2, 18; 3, 19) each provided, in approach direction of the strips (27) to be progressively shaped, at a distance upstream and downstream of the bottom pressure cylinder (8) and the pressure ram (15) and comprising a bottom anvil (2, 3) and a top pressure cylinder (18, 19) with extendable piston rod (22) and clamping jaw (30) disposed thereon, which clamping jaw lies in each case opposite a further clamping jaw (24) situated on the top end of the respective anvil (2; 3),
    characterized in that the two anvils (2; 3) and the associated top pressure cylinders (18; 19) are disposed at a fixed distance from the bottom pressure cylinder (8) and from the pressure ram (15) and that the clamping jaws (24; 30) disposed on the anvils (2; 3) and on the top pressure cylinders (18; 19) are supported in a horizontally displaceable manner.
  2. Apparatus according to claim 1, characterized in that associated with each clamping jaw (24; 30) is a positioning cylinder (31), which at least assists the horizontal movements.
  3. Apparatus according to claim 2, characterized in that each positioning cylinder (31) is a hydraulic cylinder.
  4. Apparatus according to claim 2 or 3, characterized in that each positioning cylinder (31) is bilaterally loadable with pressure medium and hence drivable in both positioning directions.
  5. Apparatus according to one of claims 1 to 4,
    characterized in that each clamping jaw (24; 30) is supported by means of a sliding bearing on the anvil (2; 3) and/or the top pressure cylinder (18; 19).
  6. Apparatus according to one of claims 1 to 5,
    characterized in that at least one of the anvils (2; 3) is adjustable in axial direction (6; 7).
  7. Apparatus according to one of claims 1 to 6,
    characterized in that the various driving means are adjustable in each case individually, in groups or as a whole jointly in a controllable manner.
EP99124175A 1999-12-03 1999-12-03 Device for stepwise bending of metal sheets or strips Expired - Lifetime EP1112788B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DK99124175T DK1112788T3 (en) 1999-12-03 1999-12-03 Device for incremental bending of sheet metal and tape
EP99124175A EP1112788B1 (en) 1999-12-03 1999-12-03 Device for stepwise bending of metal sheets or strips
ES99124175T ES2174568T3 (en) 1999-12-03 1999-12-03 DEVICE FOR THE PROGRESSIVE FOLDING PROCESS OF A METAL OR SIMILAR SHEET.
AT99124175T ATE214981T1 (en) 1999-12-03 1999-12-03 DEVICE FOR STEP-BY-STEP BENDING METAL SHEET OR METAL STRIPS
PT99124175T PT1112788E (en) 1999-12-03 1999-12-03 DEVICE FOR DISCONTINUOUS FLEXING OF METAL SHEET OR METAL RIBBONS
DE59901091T DE59901091D1 (en) 1999-12-03 1999-12-03 Device for the gradual bending of sheet metal or metal strips
US09/641,287 US6497131B1 (en) 1999-12-03 2000-08-17 Apparatus for stepwise bending of sheet metal pieces or similar material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99124175A EP1112788B1 (en) 1999-12-03 1999-12-03 Device for stepwise bending of metal sheets or strips

Publications (2)

Publication Number Publication Date
EP1112788A1 EP1112788A1 (en) 2001-07-04
EP1112788B1 true EP1112788B1 (en) 2002-03-27

Family

ID=8239532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99124175A Expired - Lifetime EP1112788B1 (en) 1999-12-03 1999-12-03 Device for stepwise bending of metal sheets or strips

Country Status (7)

Country Link
US (1) US6497131B1 (en)
EP (1) EP1112788B1 (en)
AT (1) ATE214981T1 (en)
DE (1) DE59901091D1 (en)
DK (1) DK1112788T3 (en)
ES (1) ES2174568T3 (en)
PT (1) PT1112788E (en)

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US6834525B2 (en) * 2002-11-18 2004-12-28 The Boeing Company Adjustable corrugation apparatus and method
US20050229669A1 (en) * 2004-04-20 2005-10-20 Lanczy Geza T Multi-ram press and method of metal forming
US6957558B1 (en) * 2004-05-12 2005-10-25 Sen-Jung Chuang Encaustic metal tile fabrication equipment
US7040001B1 (en) * 2004-05-12 2006-05-09 Sen-Jung Chuang Metal encaustic tile making machine
US7802459B2 (en) * 2005-03-09 2010-09-28 James Lee Lovsin Conduit bender with method and system for making ninety degree bends
US7642481B2 (en) 2006-08-15 2010-01-05 The Boeing Company Apparatus and method for forming corrugated members
US7958763B2 (en) * 2006-08-24 2011-06-14 Ltc Roll & Engineering Co. Apparatus and process for reducing profile variations in sheet metal stock
US8950231B2 (en) * 2010-03-17 2015-02-10 Sukup Manfucaturing Co. Support for a grain bin floor and method of making the same
JP2012135812A (en) * 2010-12-10 2012-07-19 Ihi Infrastructure Systems Co Ltd Method and apparatus for forming corrugated steel plate
US9238260B2 (en) * 2012-04-18 2016-01-19 Medtronic Vascular, Inc. Method and apparatus for creating formed elements used to make wound stents
CN103521606B (en) * 2013-10-22 2015-09-30 上海友升铝业有限公司 Multistation aluminium alloy car shape bending punching system
CN103934335B (en) * 2014-04-14 2015-09-23 汪贤女 A kind of bending process of linear pattern heating furnace tube
CN103934330B (en) * 2014-04-14 2016-02-03 舒丽燕 A kind of bending process of linear pattern heating furnace tube
CN103920768B (en) * 2014-04-14 2015-08-12 诸暨市基麦罗进出口有限公司 A kind of bending process of linear pattern heating furnace tube
CN113020388B (en) * 2021-02-08 2023-03-10 中国重型机械研究院股份公司 Four-degree-of-freedom transverse skin stretcher

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BE779925A (en) * 1971-03-03 1972-08-28 Dijk Edsger Wybe Van METHOD AND MACHINE FOR APPLYING A SERIES OF PROFILERS IN METAL SHEET OR STRAP
JPS5639124A (en) * 1979-09-10 1981-04-14 Nippon Kokan Kk <Nkk> Membrane forming machine
JPH0428421A (en) * 1990-05-23 1992-01-31 Hitachi Ltd Device for forming corrugated sheet
IT1280293B1 (en) * 1995-03-23 1998-01-08 Sapim Amada Spa PROCEDURE FOR THE REALIZATION OF REINFORCEMENT PROFILES ON SHEET PANELS
DE19802589A1 (en) * 1998-01-23 1999-07-29 Acera S A Step-by-step bending device for metal strips and sheets

Also Published As

Publication number Publication date
DE59901091D1 (en) 2002-05-02
EP1112788A1 (en) 2001-07-04
ES2174568T3 (en) 2002-11-01
ATE214981T1 (en) 2002-04-15
PT1112788E (en) 2002-08-30
DK1112788T3 (en) 2002-07-01
US6497131B1 (en) 2002-12-24

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