EP0534281A1 - Method and device for forming sheet metal profiles - Google Patents

Method and device for forming sheet metal profiles Download PDF

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Publication number
EP0534281A1
EP0534281A1 EP92115746A EP92115746A EP0534281A1 EP 0534281 A1 EP0534281 A1 EP 0534281A1 EP 92115746 A EP92115746 A EP 92115746A EP 92115746 A EP92115746 A EP 92115746A EP 0534281 A1 EP0534281 A1 EP 0534281A1
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EP
European Patent Office
Prior art keywords
radius
rollers
curvature
bending
adjoining
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Granted
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EP92115746A
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German (de)
French (fr)
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EP0534281B1 (en
Inventor
Dieter Nagel
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NAGEL, DIETER
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EICHENER MACHINENFABRIK GmbH
Nagel Dieter
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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
    • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
    • B21D13/045—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling the corrugations being parallel to the feeding movement
    • 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
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers

Definitions

  • the invention relates to a method for producing profiled sheets or strips from sheet metal strips or sheets, in which the sheet is passed one after the other between pairs of profiled, gradually forming, mutually adjusted or prestressed rollers.
  • Such roll formers are widely used, for example, for the production of profiled sheets, wherein, depending on the depth of the profile, up to 30 or even 40 pairs of rolls are arranged one behind the other. When passing through each of the roller pairs, the ultimately desired bend is further approximated by a further partial bend.
  • each of the bending steps is accompanied by a reduction in the effective width of the sheet to be formed and, on the other hand, due to the respective tangent surface lines of the rolls, at least the upper and lower chords of the sheet should lie within common planes, so that rolls can be used on respective common axes the need for a large number of steps and thus also a large number of suitably driven pairs of rollers, so that a complete roll former has large dimensions, requires a large amount of space and the expenditure required for its production is extremely high. While in most of the stages of deformation determined by pairs of rollers, those at Relief after bending, ie elastic suspension occurring when running out of a pair of rollers, does not pose any significant problems, the output stages prove to be much more difficult.
  • the invention is based on the object of creating a method for the production of sheet metal profiles corresponding to the genus, in which the number of deformation steps is reduced compared to the conventional ones and at the same time to provide an arrangement for carrying out the method, which accordingly corresponds to a smaller number of roller pairs manages than they were previously required, so that the manufacturing costs and the space and power requirements compared to conventional roll formers are significantly reduced.
  • a profile section of a trapezoidal sheet with an upper flange 1 is shown, which is connected via a web 2 to a lower flange 3.
  • This trapezoidal sheet is shown in the state in which it is brought into the last of the roller pairs of a roll former by clamping: the bending edges between the upper flange 1 and the web 2 on the one hand and the bridge and the lower flange 3 on the other are here as radius segments 4 and 5 reproduced.
  • the angle represented by them should be relaxed trapezoidal sheet, for example, 75 ° during manufacture and after leaving the last pair of rollers, they are here when passing through bent by the last pair of rolls of the roll former to a higher value, which results from the desired final angle, by summing up the elastic deformation that occurs.
  • the radius segments at least as they pass through the last pair of rollers, are shaped more, if only slightly, than is desired in the finished trapezoidal sheet, and in general the radius of curvature of the radius segments is narrowed here to a small extent.
  • the legs adjoining the radius segments 4, 5 are additionally bent in the opposite direction, using such a large radius of curvature that it is still within is the limit of the elastic deformation and thus these additionally formed bends deform again when relieving and relaxing the trapezoidal sheet.
  • the effective width of the trapezoidal sheet is hardly reduced by bending the radius segments, since half of the bending is already from the areas 6 and 7 of the belts is recorded and the remaining difference within the width ranges 8 and 9 of the web 2 is reduced, so that its central region is guided with the inclination retained even after relaxation, and thus does not contribute to reducing the effective width of the trapezoidal sheet can.
  • this reduction in width is kept within relatively narrow limits, it is not necessary to carry out the relaxation stepwise and gradually degrading over several pairs of rollers, as is customary, and thus the usual four to six last pairs of rollers can be carried out by a single pair of rollers designed according to the invention be replaced.
  • FIGS. 2 and 3 A practical embodiment of such a pair of rollers for the production of trapezoidal sheets is indicated in FIGS. 2 and 3.
  • the shaft of the broken top roller shown at 10.
  • needle bearings 12 are arranged on bushings, on which rollers 13 run, and narrower rollers 15 are connected to the shaft 10 via feather keys 14.
  • bushes encompassed by needle bearings 16, with which rollers 17 are supported, are arranged on the shaft 11 of the lower roller, and rollers 19 are connected to the shaft 11 by keys 18.
  • rollers of larger diameters are rotatably connected to the shafts 10, 11 of the top and bottom rollers and, driven, are able to bring about the advance of the trapezoidal sheet, while the rollers 13, 17 of smaller diameter are rotatably held via needle bearings.
  • the upper and lower rollers are set against each other, and it is entirely possible to process sheets of different thicknesses, for example from 0.5 to 1.2 mm thick, with the same rollers, the adjustment of the thickness of the sheet being adapted becomes. Furthermore, it is also possible to slightly changing the position to influence the radii of the shaped radius segments.
  • the oblique flanks 20 of the roller 13 are each set with a radius of approximately 3 mm and the flanks 20 themselves are convexly curved practically over their entire length with a large radius of, for example, 200 mm.
  • the base enclosed by the flanks 20 is cylindrical in its essentially central width region 21 and falls convexly laterally in the edge regions 22 with a large curvature in the direction of the root of the flanks 20.
  • FIG. 5 shows the roller 15 of FIG. 2 on an enlarged scale.
  • the base regions are designed with a radius of, for example, 10 mm, and the lateral surface 23 merges into the flanks on both sides with relatively narrow radii of curvature of less than 3 mm.
  • the outer surface itself is concave with a large radius, for example one of 200.8 mm.
  • the roller 17 of FIG. 3 shown in FIG. 6 shows that its flanks 24 are convex with a large radius of curvature and merge into lateral surfaces and an annular surface 25 on both sides with a small radius of curvature.
  • This ring surface 25 is convex and continuously with a large radius of curvature. In the case of wider ring surfaces, it may also be expedient to distribute the curvature over two side regions and to leave a central region uncurved.
  • Fig. 7 shows the roller 19 of Fig. 3 enlarged and shows slightly narrower radii of curvature on both sides at the transition into the flanks.
  • the lateral surface formed between them should be inclined inward at least in side regions by approximately 5 °.
  • the invention can be applied not only to trapezoidal sheets, but also to other profiled sheets.
  • the only important thing here is that bending edges or radius segments can be formed which exceed their end angles by the elastic spring deflection, without further impairment of the profile produced and the profile being able to emerge directly from this last pair of rollers and requiring no gradual relief, which would need additional pairs of roles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Laminated Bodies (AREA)

Abstract

Roller formers for sheet metal profiles, e.g. trapezoidal profiles, can be constructed with a lower outlay and, in particular, with a smaller number of pairs of rolls if the angle over which the radius segments (4, 5) are to be bent in the last pair of rolls is increased by the subsequent elastic spring back and if, at the same time, the flat areas (1-3) adjoining the radius segments are deformed - exclusively elastically - in such a way through large radii of curvature in the opposite direction that the overbending of the radius segments is compensated and their effect of reducing the width of profiled plates is largely eliminated.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Profilblechen oder -leisten aus Blechbändern oder -tafeln, bei dem das Blech nacheinander zwischen Paaren von profilierten, es stufenweise formenden, gegeneinander angestellten bzw. vorgespannten Rollen hindurchgeführt wird.The invention relates to a method for producing profiled sheets or strips from sheet metal strips or sheets, in which the sheet is passed one after the other between pairs of profiled, gradually forming, mutually adjusted or prestressed rollers.

Derartige Rollformer werden verbreitet bspw. zur Herstellung von Profilblechen eingesetzt, wobei je nach Profiltiefe bis bspw. 30 oder gar 40 Rollen aufweisende Walzenpaare hintereinander angeordnet sind. Beim Durchlaufen jedes der Walzenpaare wird hierbei die letztendlich gewünschte Biegung durch eine weitere Teilbiegung weiterhin angenähert. Da jeder der Biegungsschritte mit einer Verringerung der effektiven Breite des zu formenden Bleches einhergeht und andererseits durch die jeweils tangierenden Mantellinien der Rollen zumindest Ober- und Untergurte des Bleches innerhalb von gemeinsamen Ebenen liegen sollen, so daß Rollen auf jeweils gemeinsamen Achsen anwendbar sind, ergibt sich die Notwendigkeit einer Vielzahl von Schritten und damit auch einer Vielzahl von zweckmäßig angetriebenen Rollenpaaren, so daß ein kompletter Rollformer große Abmessungen aufweist, einen hohen Platzbedarf hat und auch der zu seiner Herstellung erforderliche Aufwand außerordentlich hoch ist. Während in den meisten der durch Rollenpaare bestimmten Verformungsstufen die bei der Entlastung nach dem Biegen, d.h. beim Auslaufen aus einem Rollenpaar, auftretende elastische Auffederung keine wesentlichen Probleme bietet, erweisen sich die Endstufen als wesentlich schwieriger. Beim Überbiegen der die Winkel bestimmenden, als Biegekanten vorgesehenen Radiussegmente werden die Flanken von bspw. Trapezblechen entsprechend stärker gegen deren Ober- und Untergurte geneigt und durch diese Versteilung die Gesamtbreite des Trapezbleches weiter eingezogen. Die folgende Entspannung bedingt eine entsprechende Abflachung der Stellung der Stege und, hiermit verbunden, eine Verbreiterung des gesamten Bleches, die ihrerseits ohne Schäden nur stufenweise vorgenommen werden kann und damit weitere Rollenpaare erfordert.Such roll formers are widely used, for example, for the production of profiled sheets, wherein, depending on the depth of the profile, up to 30 or even 40 pairs of rolls are arranged one behind the other. When passing through each of the roller pairs, the ultimately desired bend is further approximated by a further partial bend. Since each of the bending steps is accompanied by a reduction in the effective width of the sheet to be formed and, on the other hand, due to the respective tangent surface lines of the rolls, at least the upper and lower chords of the sheet should lie within common planes, so that rolls can be used on respective common axes the need for a large number of steps and thus also a large number of suitably driven pairs of rollers, so that a complete roll former has large dimensions, requires a large amount of space and the expenditure required for its production is extremely high. While in most of the stages of deformation determined by pairs of rollers, those at Relief after bending, ie elastic suspension occurring when running out of a pair of rollers, does not pose any significant problems, the output stages prove to be much more difficult. When bending over the radius segments which determine the angles and are intended as bending edges, the flanks of, for example, trapezoidal sheets are correspondingly inclined towards their upper and lower chords and the overall width of the trapezoidal sheet is further drawn in by this adjustment. The following relaxation requires a corresponding flattening of the position of the webs and, associated with this, a widening of the entire sheet, which in turn can only be carried out in stages without damage and thus requires further pairs of rollers.

Die Erfindung geht von der Aufgabe aus, ein der Gattung entsprechendes Verfahren zur Herstellung von Blechprofilen zu schaffen, bei dem die Anzahl der Verformungsschritte gegenüber den herkömmlichen reduziert wird und gleichzeitig eine Anordnung zur Durchführung des Verfahrens zu schaffen, die dementsprechend mit einer geringeren Anzahl von Walzenpaaren auskommt, als sie bisher erforderlich waren, so daß der Herstellungsaufwand sowie der Raum- sowie Leistungsbedarf gegenüber herkömmlichen Rollformern erheblich gesenkt werden.The invention is based on the object of creating a method for the production of sheet metal profiles corresponding to the genus, in which the number of deformation steps is reduced compared to the conventional ones and at the same time to provide an arrangement for carrying out the method, which accordingly corresponds to a smaller number of roller pairs manages than they were previously required, so that the manufacturing costs and the space and power requirements compared to conventional roll formers are significantly reduced.

Gelöst wird diese Aufgabe durch die Maßnahmen der Patentansprüche 1 und 4. Hierdurch wird erreicht, daß einerseits eine Überbiegung der Biegekanten von Blechprofilen vorgenommen wird, welche nach erfolgter Entspannung den Sollwert des durch die Biegekante bewirkten Winkels sichert, während andererseits durch die zusätzliche, innerhalb der elastischen Verformung liegende Biegung die Auswirkung der durch das Überbiegen bewirkten Versteilung der Stege auf die Gesamtbreite des Profils derart reduziert wird, daß weitere, eine problemlose Entspannung sichernde Rollenpare entfallen können und damit der Rollformer sowohl vereinfacht wird als auch der zu seiner Erstellung erforderliche Aufwand gesenkt wird.This object is achieved by the measures of claims 1 and 4. This ensures that on the one hand an overbending of the bending edges of sheet metal profiles is carried out, which secures the setpoint of the angle caused by the bending edge after relaxation, while on the other hand by the additional, within the elastic deformation lying bend the effect of the over-bending caused by the bending of the webs on the overall width of the profile is reduced such that further, a problem-free relaxation securing pairs of rollers can be omitted and thus the roll former is both simplified and the effort required to create it is reduced.

Weitere zweckmäßige und vorteilhafte Merkmale der Erfindung sind in den Unteransprüchen gekennzeichnet.Further expedient and advantageous features of the invention are characterized in the subclaims.

Im einzelnen sind die Merkmale der Erfindung anhand der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit diese darstellenden Zeichnungen erläutert. Es zeigen hierbei:

Figur 1
einen Profilabschnitt eines Trapezprofiles beim Durchlaufen des letzten Rollenpaares eines Rollformers,
Figur 2
abgebrochen einen Abschnitt der Oberwalze des letzten Walzenpaares eines Rollformers,
Figur 3
in gleicher Darstellung die zugehörige Unterwalze, und
Figuren 4 bis 7
vergrößert einzelne innerhalb eines Profilabschnittes zusammenwirkende Rollen eines Walzenpaares.
The features of the invention are explained in detail on the basis of the following description of exemplary embodiments in conjunction with these drawings. They show:
Figure 1
a profile section of a trapezoidal profile when passing through the last pair of rolls of a roll former,
Figure 2
broken off a section of the top roll of the last pair of rolls of a roll former,
Figure 3
in the same representation the associated lower roller, and
Figures 4 to 7
increases individual roles of a pair of rollers interacting within a profile section.

In Fig. 1 ist ein Profilabschnitt eines Trapezbleches mit einem Obergurt 1 dargestellt, der über einen Steg 2 an einen Untergurt 3 angeschlossen ist. Dieses Trapezblech ist in dem Zustand dargestellt, in den es durch Einspannen in das letzte der Rollenpaare eines Rollformers gebracht ist: Die Biegekanten zwischen dem Obergurt 1 und dem Steg 2 einerseits und dem Steg und dem Untergurt 3 andererseits sind hier als Radiussegmente 4 bzw. 5 wiedergegeben. Soll der durch sie dargestellte Winkel beim Fertigen und nach Auslaufen aus dem letzten Rollenpaar entspannten Trapezblech bspw. 75° betragen, so sind sie hier beim Durchlaufen durch das letzte Rollenpaar des Rollformers auf einen höheren Wert umgebogen, der sich aus dem gewünschten endgültigen Winkel ergibt, indem die hierbei auftretende elastische Verformung aufsummiert wurde. Das bedeutet, daß die Radiussegmente zumindest im Durchlauf durch das letzte Walzenpaar, wenn auch geringfügig, stärker eingeformt werden als dieses beim fertigen Trapezblech gewünscht wird, und im allgemeinen wird hierbei auch der Krümmungsradius der Radiussegmente geringförmig verengt. Um aber hierbei die Stege nicht zu steil zu stellen und damit die effektive Breite des Trapezbleches dadurch wesentlich einzuschränken, sind gemäß der Erfindung die an die Radiussegmente 4, 5 anschließenden Schenkel zusätzlich gegemsinnig gebogen, wobei ein derart großer Krümmungsradius benutzt wird, daß er noch innerhalb der Grenze der elastischen Verformung liegt und damit diese zusätzlich eingeformten Biegungen beim Entlasten und Entspannen des Trapezbleches sich rückverformen. Bei den relativ breiten Obergurten wird dieses bewerkstelligt, indem nur ein relativ geringer, direkt an ein Radiussegment anschließender Breitenbereich 6 mit einer solchen Biegung großen Krümmungsradius', bspw. dem 100fachen der Blechstärke, versehen wird, während der breite mittlere Bereich des Obergurtes 1 eben bleibt. Bei den schmaleren Untergurten kann ein sich über dessen gesamte Breite erstreckender Breitenbereich 7 mit einer solchen Biegung großen Krümmungsradius' versehen werden. Bei den Stegen müssen gegensinnige Biegungen eingebracht werden, die sich auch nur über einen jeweils an die Radiussegmente 4 bzw. 5 anschließenden Breitenbereich 8 bzw. 9 erstrecken, wobei ein zwischen diesen Bereichen liegender Mittelbereich ungebogen bleibt und im wesentlichen mit der Neigung verläuft, die er auch im entspannten Trapezblech einnimmt. Die effektive Breite des Trapezbleches wird hierbei durch das Überbiegen der Radiussegmente kaum verkürzt, da jeweils die Hälfte der Überbiegung bereits von den Bereichen 6 und 7 der Gurte aufgenommen wird und die verbleibende Differenz innerhalb der Breitenbereiche 8 und 9 des Steges 2 abgebaut wird, so daß dessen Mittelbereich mit der auch später nach dem Entspannen beibehaltenen Neigung geführt ist, und damit zur Verringerung der effektiven Breite des Trapezbleches nicht beitragen kann. Da aber diese Breitenverringerung sich in relativ engen Grenzen hält ist es nicht erforderlich, die Entspannung, wie üblich, über mehrere Walzenpaare stufenweise und sich langsam abbauend durchzuführen, und damit können die üblichen vier bis sechs letzten Walzenpaare durch ein einziges, gemäß der Erfindung ausgebildetes Walzenpaar ersetzt werden.In Fig. 1, a profile section of a trapezoidal sheet with an upper flange 1 is shown, which is connected via a web 2 to a lower flange 3. This trapezoidal sheet is shown in the state in which it is brought into the last of the roller pairs of a roll former by clamping: the bending edges between the upper flange 1 and the web 2 on the one hand and the bridge and the lower flange 3 on the other are here as radius segments 4 and 5 reproduced. If the angle represented by them should be relaxed trapezoidal sheet, for example, 75 ° during manufacture and after leaving the last pair of rollers, they are here when passing through bent by the last pair of rolls of the roll former to a higher value, which results from the desired final angle, by summing up the elastic deformation that occurs. This means that the radius segments, at least as they pass through the last pair of rollers, are shaped more, if only slightly, than is desired in the finished trapezoidal sheet, and in general the radius of curvature of the radius segments is narrowed here to a small extent. However, in order not to set the webs too steeply and thus significantly restrict the effective width of the trapezoidal sheet, the legs adjoining the radius segments 4, 5 are additionally bent in the opposite direction, using such a large radius of curvature that it is still within is the limit of the elastic deformation and thus these additionally formed bends deform again when relieving and relaxing the trapezoidal sheet. In the case of the relatively wide top chords, this is accomplished by providing only a relatively small width region 6 directly adjoining a radius segment with such a bend having a large radius of curvature, for example 100 times the sheet thickness, while the broad central region of the top chord 1 remains flat . In the case of the narrower lower chords, a width region 7 which extends over its entire width can be provided with such a large radius of curvature. Opposing bends must be introduced in the webs, which also only extend over a width region 8 or 9, each adjoining the radius segments 4 or 5, a central region lying between these regions remaining unbent and essentially running with the inclination that it also in the relaxed trapezoidal sheet. The effective width of the trapezoidal sheet is hardly reduced by bending the radius segments, since half of the bending is already from the areas 6 and 7 of the belts is recorded and the remaining difference within the width ranges 8 and 9 of the web 2 is reduced, so that its central region is guided with the inclination retained even after relaxation, and thus does not contribute to reducing the effective width of the trapezoidal sheet can. However, since this reduction in width is kept within relatively narrow limits, it is not necessary to carry out the relaxation stepwise and gradually degrading over several pairs of rollers, as is customary, and thus the usual four to six last pairs of rollers can be carried out by a single pair of rollers designed according to the invention be replaced.

Eine praktische Ausführung eines solchen Walzenpaares für die Herstellung von Trapezblechen ist in den Fig. 2 und 3 angedeutet. In Fig. 2 ist die Welle der abgebrochen dargestellten Oberwalze mit 10 bezeichnet. Auf dieser Welle 10 sind auf Buchsen Nadellager 12 angeordnet, auf denen Rollen 13 laufen, und mit der Welle 10 sind über Paßfedern 14 schmalere Rollen 15 verbunden. Gemäß Fig. 3 sind auf der Welle 11 der Unterwalze von Nadellagern 16 umgriffene Buchsen angeordnet, mit denen Rollen 17 abgestützt sind, und durch Paßfedern 18 sind mit der Welle 11 Rollen 19 verbunden. Damit sind jeweils die Rollen größerer Durchmesser mit den Wellen 10, 11 der Ober- bzw. Unterwalze drehfest verbunden und vermögen, angetrieben, den Vorschub des Trapezbleches zu bewirken, während die Rollen 13, 17 geringeren Durchmessers über Nadellager drehbar gehalten sind.A practical embodiment of such a pair of rollers for the production of trapezoidal sheets is indicated in FIGS. 2 and 3. In Fig. 2, the shaft of the broken top roller shown at 10. On this shaft 10, needle bearings 12 are arranged on bushings, on which rollers 13 run, and narrower rollers 15 are connected to the shaft 10 via feather keys 14. According to FIG. 3, bushes encompassed by needle bearings 16, with which rollers 17 are supported, are arranged on the shaft 11 of the lower roller, and rollers 19 are connected to the shaft 11 by keys 18. Thus, the rollers of larger diameters are rotatably connected to the shafts 10, 11 of the top and bottom rollers and, driven, are able to bring about the advance of the trapezoidal sheet, while the rollers 13, 17 of smaller diameter are rotatably held via needle bearings.

Zum Betriebe werden die Ober- und die Unterwalze gegeneinander angestellt, und es ist durchaus möglich, Bleche unterschiedlicher Stärken, bspw. von 0,5 bis 1,2 mm Stärke, mit den gleichen Walzen zu verarbeiten, wobei die Anstellung der Stärke des Bleches angepaßt wird. Des weiteren ist es aber auch möglich, durch geringfügiges Ändern der Anstellung die Radien der geformten Radiussegmente zu beeinflussen.For operation, the upper and lower rollers are set against each other, and it is entirely possible to process sheets of different thicknesses, for example from 0.5 to 1.2 mm thick, with the same rollers, the adjustment of the thickness of the sheet being adapted becomes. Furthermore, it is also possible to slightly changing the position to influence the radii of the shaped radius segments.

Um die Profilabrundungen zu zeigen, sind in Fig. 4 bis 7 die Rollen 13 und 15 der Fig. 2 und 17 und 19 der Fig. 3 vergrößert dargestellt. In Fig. 4 ist klar ersichtlich, daß die schrägen Flanken 20 der Rolle 13 jeweils mit einem Radius von etwa 3 mm angesetzt ist und die Flanken 20 selbst praktisch über ihre ganze Länge mit einem großen Radius von bspw. 200 mm konvex durchgekrümmt sind. Die von den Flanken 20 eingeschlossene Basis ist in ihrem wesentlichen mittleren Breitenbereich 21 zylindrisch ausgeführt und fällt seitlich in Randbereichen 22 jeweils mit großer Krümmung konvex in Richtung auf die Wurzel der Flanken 20 ab.In order to show the rounding of the profile, the rollers 13 and 15 of FIGS. 2 and 17 and 19 of FIG. 3 are shown enlarged in FIGS. 4 to 7. 4 clearly shows that the oblique flanks 20 of the roller 13 are each set with a radius of approximately 3 mm and the flanks 20 themselves are convexly curved practically over their entire length with a large radius of, for example, 200 mm. The base enclosed by the flanks 20 is cylindrical in its essentially central width region 21 and falls convexly laterally in the edge regions 22 with a large curvature in the direction of the root of the flanks 20.

Fig. 5 zeigt vergrößert die Rolle 15 der Fig. 2. Die Fußbereiche sind hier mit einem Radius von bspw. 10 mm ausgeführt, und die Mantelfläche 23 geht mit relativ engen Krümmungsradien von weniger als 3 mm beidseitig in die Flanken über. Die Mantelfläche selbst ist konkav mit großem Radius, bspw. einem solchen von 200,8 mm, eingezogen.FIG. 5 shows the roller 15 of FIG. 2 on an enlarged scale. The base regions are designed with a radius of, for example, 10 mm, and the lateral surface 23 merges into the flanks on both sides with relatively narrow radii of curvature of less than 3 mm. The outer surface itself is concave with a large radius, for example one of 200.8 mm.

Die in Fig. 6 gezeigte Rolle 17 der Fig. 3 zeigt, daß ihre Flanken 24 konvex mit großem Krümmungsradius ausgeführt sind und beidseitig mit einem kleinen Krümmungsradius in Mantelflächen und eine Ringfläche 25 übergehen. Diese Ringfläche 25 ist konvex und durchgehend mit großem Krümmungsradius ausgeführt. Bei breiteren Ringflächen kann es sich als zweckmäßig erweisen, auch hier die Krümmung auf zwei Seitenbereiche zu verteilen und einen mittleren Bereich ungekrümmt zu lassen.The roller 17 of FIG. 3 shown in FIG. 6 shows that its flanks 24 are convex with a large radius of curvature and merge into lateral surfaces and an annular surface 25 on both sides with a small radius of curvature. This ring surface 25 is convex and continuously with a large radius of curvature. In the case of wider ring surfaces, it may also be expedient to distribute the curvature over two side regions and to leave a central region uncurved.

Fig. 7 stellt die Rolle 19 der Fig. 3 vergrößert dar und zeigt beidseitig etwas engere Krümmungsradien beim Übergang in die Flanken. Die zwischen ihnen gebildete Mantelfläche sollte mindestens in Seitenbereichen um etwa 5° nach innen geneigt sein Es ist aber auch möglich, auch hier entsprechende schwache Krümmungen großen Radius' einzusetzen oder derart gekrümmte Randstreifen in Verbindung mit einem zylindrischen Mittelbereich vorzusehen. Wesentlich ist hierbei nur, daß im Bereiche der die Radiussegmente formenden, stark gekrümmten Ringkanten das anliegende Blech unter Einwirkung der Rolle 13 der Fig. 4 etwas nachzugeben vermag, so daß eine Überformung der Radiussegmente 4 ohne unzulässige Beeinträchtigung der effektiven Breite des gesamten Trapezbleches möglich ist, um bei mäßigem Krümmungsradius jeweils etwa einen halben Überbiegungswinkel der Radiussegmente 4,5 zu kompensieren.Fig. 7 shows the roller 19 of Fig. 3 enlarged and shows slightly narrower radii of curvature on both sides at the transition into the flanks. The lateral surface formed between them should be inclined inward at least in side regions by approximately 5 °. However, it is also possible to use correspondingly small curvatures of large radius here, or to provide edge strips curved in this way in connection with a cylindrical central region. It is only important here that in the region of the strongly curved ring edges forming the radius segments, the adjacent sheet metal can give in somewhat under the action of the roller 13 of FIG. 4, so that overmolding of the radius segments 4 is possible without undue impairment of the effective width of the entire trapezoidal sheet in order to compensate for about half a bend angle of the radius segments 4, 5 with a moderate radius of curvature.

Wie bereits eingangs erwähnt, läßt sich die Erfindung nicht nur auf Trapezbleche, sondern auch auf weitere Profilbleche anwenden. Wesentlich ist hierbei nur, daß an sich Biegekanten bzw. Radiussegmente eingeformt werden können, welche deren Endwinkel um die elastische Auffederung überschreitet, ohne daß weitere Beeinträchtigungen der erzeugten Profiles stattfinden und aus diesem letzten Walzenpaar das Profil direkt auszutreten vermag und keine stufenweise Entlastung verlangt, welche zusätzliche Rollenpaare benötigen würde.As already mentioned at the beginning, the invention can be applied not only to trapezoidal sheets, but also to other profiled sheets. The only important thing here is that bending edges or radius segments can be formed which exceed their end angles by the elastic spring deflection, without further impairment of the profile produced and the profile being able to emerge directly from this last pair of rollers and requiring no gradual relief, which would need additional pairs of roles.

Claims (6)

Verfahren zum Herstellen von Profilblechen aus Blechbändern oder -tafeln, bei dem das Blech nacheinander zwischen Paaren von profilierten, es stufenweise formenden, gegeneinander angestellten bzw. vorgespannten Rollen hindurchgeführt wird (Rollformer),
dadurch gekennzeichnet,
daß durch das letzte Rollenpaar eben bleibende, gestreckte Felder gegeneinander abgrenzende Biegekanten um den für sie vorgegebenen Winkel, vermehrt um die hierbei anfallende elastische Verformung, eingeformt werden, und daß die an die Schenkel der Winkel anschließenden Bereiche der Felder mit so großem Krümmungsradius zurückgebogen werden, daß die hierbei bewirkte Krümmung noch innerhalb der elastischen Verformbarkeit des Bleches liegt und die Überbiegung der Biegekanten kompensiert.Process for the production of profiled sheets from sheet metal strips or sheets, in which the sheet is passed successively between pairs of profiled rolls which form it step by step and are set against one another or pretensioned (roll former),
characterized,
that by the last pair of rollers flat, elongated fields delimiting bending edges are formed by the angle specified for them, increasingly by the elastic deformation that occurs, and that the areas of the fields adjoining the legs of the angles are bent back with such a large radius of curvature, that the curvature caused here is still within the elastic deformability of the sheet and compensates for the bending of the bending edges. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die an eine Biegekante anschließende Krümmung großen Radius' sich über einen Zentriwinkel erstreckt, welcher der Hälfte der elastischen Überbiegung der Biegekanten entspricht.Method according to claim 1,
characterized,
that the curvature of large radius adjoining a bending edge extends over a central angle which corresponds to half the elastic overbending of the bending edges. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß bei breiten Feldern nur deren an die Biegekante anschließenden Randbereiche (22) mit großem Krümmungsradius durchgebogen werden.The method of claim 1 or 2,
characterized,
that in the case of wide fields only their edge regions (22) adjoining the bending edge are bent with a large radius of curvature. Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß insbesondere bei schmalen Feldern die an die diese begrenzenden Biegekanten anschließenden Bereiche großen Krümmungsradius' ineinander übergehen (Ringflächen 25).Method according to one of claims 1 to 3,
characterized,
that, in particular in the case of narrow fields, the regions of large radius of curvature adjoining the bending edges delimiting them merge (annular surfaces 25). Anordnung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4
mit einem das Blech formende Rollen aufweisenden Walzenpaar,
dadurch gekennzeichnet,
daß Gurte aufnehmende Rollen (13, 17) eine schräge Flanken (20, 24) zeigende Nut aufweisen, die mit großem Radius konvex gekrümmt sind, und daß deren Grund an die zu formenden Radiussegmente (4, 5) bestimmenden Krümmungen geringen Radius' mit großem Radius konvex durchgebogene Randbereiche (22) sich anschließen, die durch eine zylindrische Mantelfläche (23) miteinander verbunden sein können.Arrangement for performing the method according to one of claims 1 to 4
with a pair of rollers forming the sheet metal,
characterized,
that the belt-receiving rollers (13, 17) have an inclined flank (20, 24) groove, which are convexly curved with a large radius, and that the reason for the radius segments (4, 5) to be formed are small radius curves with a large radius Radius convexly curved edge regions (22) join which can be connected to one another by a cylindrical lateral surface (23). Anordnung nach Anspruch 5,
dadurch gekennzeichnet,
daß Rollen (15, 19) großen Durchmessers mit Stege in Nute gegenüberstehender Rollen (17, 13) einformenden Mantelflächen (23) konvex eingeformte Krümmungen großen Durchmessers aufweisen, deren einander zugewandte Enden durch eine zylindrische Mantelfläche verbunden sein können.Arrangement according to claim 5,
characterized,
that rollers (15, 19) of large diameter with webs forming webs (23, 13) forming grooves in the groove of opposing rollers (17, 13) have convexly shaped curvatures of large diameter, the facing ends of which can be connected by a cylindrical outer surface.
EP92115746A 1991-09-27 1992-09-15 Method and device for forming sheet metal profiles Expired - Lifetime EP0534281B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4132355 1991-09-27
DE4132355A DE4132355A1 (en) 1991-09-27 1991-09-27 METHOD AND ARRANGEMENT FOR THE PRODUCTION OF SHEET PROFILES

Publications (2)

Publication Number Publication Date
EP0534281A1 true EP0534281A1 (en) 1993-03-31
EP0534281B1 EP0534281B1 (en) 1996-10-16

Family

ID=6441700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115746A Expired - Lifetime EP0534281B1 (en) 1991-09-27 1992-09-15 Method and device for forming sheet metal profiles

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EP (1) EP0534281B1 (en)
AT (1) ATE144170T1 (en)
DE (2) DE4132355A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108188215A (en) * 2017-11-30 2018-06-22 江苏华电铁塔制造有限公司 A kind of sheet material bending mould

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938537C1 (en) * 1999-08-13 2001-02-01 Thyssenkrupp Stahl Ag Profiling system for the production of trapezoidal profiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1534299A (en) * 1921-12-21 1925-04-21 William M Connery Corrugation-forming die for metal plates
GB429753A (en) * 1933-11-01 1935-06-04 Henry Herbert Crafton Improvements in apparatus for corrugating sheets
US3251211A (en) * 1962-04-19 1966-05-17 Scotts Engineering Newport Ltd Corrugating metal sheets
DE2143483A1 (en) * 1970-09-07 1972-03-09 Associated Engineering Ltd., Leamington Spa, Warwickshire (Grossbritannien) Machine for the production of corrugated layers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1534299A (en) * 1921-12-21 1925-04-21 William M Connery Corrugation-forming die for metal plates
GB429753A (en) * 1933-11-01 1935-06-04 Henry Herbert Crafton Improvements in apparatus for corrugating sheets
US3251211A (en) * 1962-04-19 1966-05-17 Scotts Engineering Newport Ltd Corrugating metal sheets
DE2143483A1 (en) * 1970-09-07 1972-03-09 Associated Engineering Ltd., Leamington Spa, Warwickshire (Grossbritannien) Machine for the production of corrugated layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108188215A (en) * 2017-11-30 2018-06-22 江苏华电铁塔制造有限公司 A kind of sheet material bending mould

Also Published As

Publication number Publication date
ATE144170T1 (en) 1996-11-15
DE59207377D1 (en) 1996-11-21
DE4132355A1 (en) 1993-04-01
EP0534281B1 (en) 1996-10-16

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