EP0031822B1 - Method for bending sheets and device for implementing the method - Google Patents
Method for bending sheets and device for implementing the method Download PDFInfo
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- EP0031822B1 EP0031822B1 EP80901210A EP80901210A EP0031822B1 EP 0031822 B1 EP0031822 B1 EP 0031822B1 EP 80901210 A EP80901210 A EP 80901210A EP 80901210 A EP80901210 A EP 80901210A EP 0031822 B1 EP0031822 B1 EP 0031822B1
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- Prior art keywords
- bending
- sheet metal
- sheet
- beads
- pair
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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
- B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
Definitions
- the invention relates to a method for bending sheet metal with continuous profile shape in one direction, consisting of inner and outer belts with intermediate webs, for. B. of sheets with trapezoidal or triangular profiling, in which in the area of the material compression occurring during bending, d. H. continuous longitudinal beads are formed in the compressive stress area (inner belts).
- Sheets with profiling in particular so-called trapezoidal sheets, can hardly or only be bent with great effort around axes running perpendicular to the profiling. The reason for this is that tensile and compressive stresses occur during bending, but the sheets used can probably absorb tensile stresses, but not compressive stresses. If you try e.g. B. to bend a trapezoidal sheet in the usual way, there are bulges in the compressive stress range, the extent of which is within tolerable limits only from a bending radius of about 25 m.
- a method for bending trapezoidal sheets has become known, in which depressions running at a distance from one another and transverse to the profiling are embossed into the sheet. In this way, the trapezoidal sheet can actually be bent, but there are serious disadvantages to the process. On the one hand, the process is very slow and expensive because it works gradually and not continuously. On the other hand, the sheet made by the known method is hardly resilient, since it easily collapses in the manner of an accordion bellows because of the transverse depressions.
- a device for bending a sheet with a trapezoidal profile is also known (US Pat. No. 4,154,077), in which a roller of a pair of rollers has a circumferential groove in the region of the inner belts of the continuous sheets, into which the sheet can escape during the shaping process , whereas the assigned roller has a smooth surface.
- a form-fitting formation of beads is just as little thought here as a formation of beads in the area of the webs of the trapezoidal sheet.
- AT-B-313 684 describes a method and an apparatus for bending metal sheets in two spatial directions, in particular in a part of an annular bead surface.
- Specially shaped rollers and a specific position of these rollers with respect to the rolling direction ensure that a sheet is stretched the most in the vicinity of its central axis, the stretching decreasing towards the edge.
- the formation of beads on the longitudinal edges is mentioned, but these beads do not serve to absorb material deformations, but rather represent conventional reinforcing beads.
- At least one bead is additionally formed in the webs during bending in the sheet and that existing beads are positively reinforced by appropriate profiling of the bending tools during the bending.
- profiled sheets can be bent surprisingly easily and at high speed. After bending, the sheets also have at least the same strength as before. Since the compressive stresses only occur in the inner belts or in the inner web parts during bending, it is sufficient to form beads in these areas.
- FIGS. 1a and b show a section through a trapezoidal sheet before or after bending
- FIGS. 2 and 3 show a schematic side view of an apparatus for carrying out the method according to the invention
- FIG. 4 shows a section of a trapezoidal sheet during the bending between a pair of profile rolls.
- the trapezoidal sheet 1 shown in FIG. 1a with the usual profile shape is to be bent around an axis that runs normal to the direction of the profile.
- continuous longitudinal beads 5 are formed in the sheet during bending, which are in the region of the compressive stresses that occur and are indicated in FIG. 1. Due to the formation of the beads at the same time as the bending, the upsets are absorbed by the beads, so that the sheet is present in the bent state without warping or the like, has an ongoing appearance and has also gained in terms of its strength.
- a roller roll forming machine is suitable for bending profiled sheets according to the inventive method.
- 2 or 3 consists of a pair of rollers 6, 7, which is preceded by a first bending roller 8 and a second bending roller 9 is arranged downstream. All rollers are designed as profile rollers; their profile corresponds to the sheet profile and at least the rollers 6, 7 of the pair of rollers are also profiled according to the beads to be produced.
- FIG. 4 shows a trapezoidal sheet 1 between the rollers 6 and 7 of the pair of rollers.
- the beads 5 are made exactly in the middle of the outer or inner belts and the webs.
- the upper roller 6 is mounted and driven in a stationary manner, but the lower roller 7 can be set against the roller 6, as a result of which the roller gap can be adjusted.
- the sheet 1 runs from the right in the direction A via the bending roller 8, which is not employed here, into the nip of the rollers 6, 7 and then over the bending roller 9, whose degree of inclination determines the bending radius.
- the roll gap or the roll profiles are dimensioned in such a way that the compression in the bead area that occurs during bending contributes to the bead formation. It is thus achieved that the inevitable material compression occurs in the form of beads when bending in precisely defined zones.
- the sheet 1 can be pre-bent by means of the first bending roller 8 and brought to the final bending radius by means of the second bending roller 9.
- trapezoidal sheets made of steel or aluminum could be bent from sheet thicknesses of 0.6 mm and with trapezoidal heights of up to 200 mm, bending radii of less than 4.50 m being achieved. In some cases, the production of several beads next to each other can also be advantageous.
- the method according to the invention is described using a trapezoidal sheet, the method can also be applied to other profile shapes, e.g. B. corrugated sheets, sheets with triangular or rectangular profile, etc. It is only essential that the beads are formed during bending and in the area of the compressive stresses occurring during bending.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zum Biegen von Blech mit in einer Richtung durchlaufenden Profilform, bestehend aus Innen- und Außengurten mit dazwischenliegenden Stegen, z. B. von Blechen mit trapez- oder dreieckförmiger Profilierung, bei dem im Bereich der beim Biegen auftretenden Materialstauchungen, d. h. im Druckspannungsbereich (Innengurte), durchgehende Längssicken ausgebildet werden.The invention relates to a method for bending sheet metal with continuous profile shape in one direction, consisting of inner and outer belts with intermediate webs, for. B. of sheets with trapezoidal or triangular profiling, in which in the area of the material compression occurring during bending, d. H. continuous longitudinal beads are formed in the compressive stress area (inner belts).
Bleche mit Profilierung, insbesondere sogenannte Trapezbleche, können um senkrecht zur Profilierung verlaufende Achsen kaum oder nur mit großem Aufwand gebogen werden. Der Grund hierfür liegt darin, daß beim Biegen Zug-und Druckspannungen auftreten, die verwendeten Bleche jedoch wohl Zugspannungen, nicht jedoch Druckspannungen aufnehmen können. Versucht man z. B. ein Trapezblech auf übliche Weise zu biegen, so kommt es im Druckspannungsbereich zu Ausbeulungen, deren Ausmaß erst ab einem Biegeradius von etwa 25 m in erträglichen Grenzen liegt.Sheets with profiling, in particular so-called trapezoidal sheets, can hardly or only be bent with great effort around axes running perpendicular to the profiling. The reason for this is that tensile and compressive stresses occur during bending, but the sheets used can probably absorb tensile stresses, but not compressive stresses. If you try e.g. B. to bend a trapezoidal sheet in the usual way, there are bulges in the compressive stress range, the extent of which is within tolerable limits only from a bending radius of about 25 m.
Es besteht jedoch ein großer Bedarf nach gebogenen Blechen mit Biegeradien, die wesentlich kleiner als 25 m sind, z. B. für Dachkonstruktionen, wo Biegeradien von 5 bis 10 m und auch darunter erwünscht sind.However, there is a great need for curved sheets with bending radii that are significantly smaller than 25 m, e.g. B. for roof structures where bending radii of 5 to 10 m and below are desired.
Es ist ein Verfahren zum Biegen von Trapezblechen bekannt geworden, bei welchem auf einer Presse in Abstand voneinander und quer zur Profilierung verlaufende Vertiefungen in das Blech geprägt werden. Auf diese Weise läßt sich zwar das Trapezblech tatsächlich biegen, doch haften dem Verfahren schwerwiegende Nachteile an. Einerseits ist das Verfahren sehr langsam und kostspielig, da es schrittweise und nicht kontinuierlich arbeitet. Andererseits ist das nach dem bekannten Verfahren hergestellte Blech kaum belastbar, da es wegen der querverlaufenden Vertiefungen leicht nach Art eines Ziehharmonikabalges zusammenklappt.A method for bending trapezoidal sheets has become known, in which depressions running at a distance from one another and transverse to the profiling are embossed into the sheet. In this way, the trapezoidal sheet can actually be bent, but there are serious disadvantages to the process. On the one hand, the process is very slow and expensive because it works gradually and not continuously. On the other hand, the sheet made by the known method is hardly resilient, since it easily collapses in the manner of an accordion bellows because of the transverse depressions.
Es ist weiter eine Vorrichtung zum Biegen eines Bleches mit trapezförmigem Profil bekannt (US-A-4 154 077), bei welcher eine Walze eines Walzenpaares im Bereich der Innengurte der durchlaufenden Bleche eine umlaufende Nut aufweist, in die das Blech während des Verformvorganges ausweichen kann, wogegen die zugeordnete Walze eine glatte Oberfläche besitzt. An eine formschlüssige Formung von Sicken ist hier ebensowenig gedacht, wie an eine Ausbildung von Sicken im Bereich der Stege des Trapezbleches.A device for bending a sheet with a trapezoidal profile is also known (US Pat. No. 4,154,077), in which a roller of a pair of rollers has a circumferential groove in the region of the inner belts of the continuous sheets, into which the sheet can escape during the shaping process , whereas the assigned roller has a smooth surface. A form-fitting formation of beads is just as little thought here as a formation of beads in the area of the webs of the trapezoidal sheet.
Schließlich beschreibt die AT-B-313 684 ein Verfahren und eine Vorrichtung zum Biegen von Blechen in zwei Raumrichtungen, im besonderen in einen Teil einer Ringwulstfläche. Dabei sorgen speziell geformte Walzen und eine bestimmte Lage dieser Walzen bezüglich der Walzrichtung dafür, daß ein Blech in der Nähe seiner Mittelachse am meisten gestreckt wird, wobei die Streckung gegen den Rand hin abnimmt. Nebenbei wird die Ausbildung von Sicken an den Längsrändern erwähnt, doch dienen diese Sicken nicht zur Aufnahme von Materialverformungen, sondern stellen übliche Versteigungssicken dar.Finally, AT-B-313 684 describes a method and an apparatus for bending metal sheets in two spatial directions, in particular in a part of an annular bead surface. Specially shaped rollers and a specific position of these rollers with respect to the rolling direction ensure that a sheet is stretched the most in the vicinity of its central axis, the stretching decreasing towards the edge. Incidentally, the formation of beads on the longitudinal edges is mentioned, but these beads do not serve to absorb material deformations, but rather represent conventional reinforcing beads.
Es ist das Ziel der Erfindung, ein Verfahren und eine Vorrichtung zum Biegen von Blechen mit Profilierung, insbesondere von Trapezblechen zu schaffen, das bei rascher und einfacher Arbeitsweise gebogene Bleche hoher Qualität ergibt. Vor allem sollen die Bleche durch das Biegen nicht an Festigkeit verlieren.It is the object of the invention to provide a method and an apparatus for bending sheet metal with profiling, in particular trapezoidal sheet metal, which results in high quality curved sheet metal in a quick and simple manner. Above all, the sheets should not lose strength due to bending.
Dieses Ziel läßt sich mit einem Verfahren der eingangs genannten Art dadurch erreichen, daß erfindungsgemäß in dem Blech während des Biegens zusätzlich in den Stegen wenigstens eine Sicke ausgebildet wird und daß bereits vorhandene Sicken durch entsprechende Profilierung der Biegewerkzeuge während des Biegens formschlüssig verstärkt werden.This goal can be achieved with a method of the type mentioned at the outset that, according to the invention, at least one bead is additionally formed in the webs during bending in the sheet and that existing beads are positively reinforced by appropriate profiling of the bending tools during the bending.
Auf diese Weise lassen sich Bleche mit Profilierung überraschend einfach und mit hoher Geschwindigkeit biegen. Die Bleche weisen außerdem nach dem Biegen zumindest die gleiche Festigkeit wie vorher auf. Da die Druckspannungen während des Biegens bloß in den Innengurten bzw. in den innenliegenden Stegteilen auftreten, genügt es, in diesen Bereichen Sicken auszubilden.In this way, profiled sheets can be bent surprisingly easily and at high speed. After bending, the sheets also have at least the same strength as before. Since the compressive stresses only occur in the inner belts or in the inner web parts during bending, it is sufficient to form beads in these areas.
Es ist an dieser Stelle anzumerken, daß ebene, somit nicht gebogene Trapezbleche mit Längssicken dem Stand der Technik angehören. Derartige Längssicken in den Innen- und Außengurten dienen der Erhöhung des Trägheits- und des Widerstandsmomentes. Mit dem Verfahren nach der Erfindung können auch Bleche mit bereits vorhandenen Sicken gebogen werden, entweder durch Nacharbeiten dieser Sicken oder durch Herstellung neuer, zusätzlicher Sicken.It should be noted at this point that flat trapezoidal sheets, which are not curved, with longitudinal beads are state of the art. Such longitudinal beads in the inner and outer belts serve to increase the moment of inertia and the section modulus. With the method according to the invention, sheets with existing beads can also be bent, either by reworking these beads or by producing new, additional beads.
Oft ist es jedoch aus fertigungstechnischen und wirtschaftlichen Gründen zweckmäßig, wenn in der Mitte der Außen- und Innengurte sowie im Bereich der Blechmittenebene in den Stegen jeweils eine Sicke ausgebildet wird.However, it is often expedient for manufacturing and economic reasons if a bead is formed in the webs in the middle of the outer and inner belts and in the area of the center plane of the sheet metal.
Zur Durchführung des erfindungsgemäßen Verfahrens eignet sich besonders eine Vorrichtung mit einem angetriebenen Walzenpaar, das eine ortsfeste sowie eine zustellbare Walze aufweist, sowie mit zumindest einer, vor bzw. hinter dem Walzenpaar angeordneten, zustellbaren Biegewalze, wobei die Walzen ein Profil aufweisen, das dem Blechprofil entspricht und eine der Walzen an der Stelle der in dem Blech auszubildenden Längssicken eine Rille aufweist und bei welcher erfindungsgemäß eine Walze zumindest des Walzenpaares eine eine Sicke formende Schulter im Bereich der Stege des Bleches aufweist bzw. Schultern an jenen Stellen aufweisen, an denen am einlaufenden Blech bereits Sicken vorhanden sind, um diese beim Biegen des Bleches zu verstärken.A device with a driven pair of rollers, which has a stationary and an deliverable roller, and with at least one deliverable bending roller arranged in front of or behind the pair of rollers, is particularly suitable for carrying out the method according to the invention, the rollers having a profile that matches the sheet metal profile corresponds and one of the rollers has a groove at the location of the longitudinal beads to be formed in the sheet and in which, according to the invention, a roller at least of the pair of rollers has a bead forming a shoulder in the region of the webs of the sheet or shoulders at those points at which at the incoming Sheet metal beads are already present around this reinforce when bending the sheet.
Die Erfindung samt ihren weiteren Vorteilen und Merkmalen ist im folgenden an Hand beispielsweiser Ausführungen näher beschrieben, die in der Zeichnung veranschaulicht sind. Es zeigen Fig. 1a und b einen Schnitt durch ein Trapezblech vor bzw. nach dem Biegen, Fig. 2 und 3 in schematischer Seitenansicht eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens und Fig. 4 einen Abschnitt eines Trapezbleches während des Biegens zwischen einem Profilwalzenpaar.The invention together with its further advantages and features is described in more detail below on the basis of exemplary embodiments which are illustrated in the drawing. 1a and b show a section through a trapezoidal sheet before or after bending, FIGS. 2 and 3 show a schematic side view of an apparatus for carrying out the method according to the invention, and FIG. 4 shows a section of a trapezoidal sheet during the bending between a pair of profile rolls.
Das in Fig. 1a dargestellte Trapezblech 1 mit üblicher Profilform soll um eine Achse gebogen werden, die normal zur Profilierungsrichtung verläuft. In bezug auf die Krümmungsachse a (Fig. 3) kann man zwischen Innengurten 2 und Außengurten 3 unterscheiden, die über Stege 4 (Trapezschenkel) miteinander verbunden sind. Beim Biegen dieses Bleches 1 um die Krümmungsachse a, die in Fig. 1 nicht eingezeichnet ist, jedoch in der Zeichnung oberhalb des Bleches, parallel zu diesem und senkrecht zur Profilierungsrichtung zu denken ist, treten in den Innengurten 2 sowie im - in bezug auf die Krümmungsachse a - innenliegenden Teil der Stege 4 Druckspannungen auf, die Stauchungen und Verwerfungen des Bleches zur Folge haben.The trapezoidal sheet 1 shown in FIG. 1a with the usual profile shape is to be bent around an axis that runs normal to the direction of the profile. With respect to the axis of curvature a (FIG. 3), a distinction can be made between
Um diese Stauchungen zu vermeiden, werden beim erfindungsgemäßen Verfahren in dem Blech während des Biegens durchgehende Längssicken 5 ausgebildet, die im Bereich der auftretenden Druckspannungen liegen und in Fig. 1 angedeutet sind. Durch die gleichzeitig mit dem Biegen vorgenommene Ausbildung der Sicken werden die Stauchungen von den Sicken aufgenommen, so daß das Blech im gebogenen Zustand ohne Verwölbungen od. dgl. vorliegt, ein tadelloses Aussehen aufweist und auch in Hinblick auf seine Festigkeit gewonnen hat.In order to avoid these upsets, in the method according to the invention continuous
Zum Biegen profilierter Bleche nach dem erfindungsgemäßen Verfahren eignet sich eine Rollenprofiliermaschine, die z. B. gemäß Fig. 2 bzw. 3 aus einem Walzenpaar 6, 7 besteht, dem eine erste Biegewalze 8 vorangestellt und eine zweite Biegewalze 9 nachgeordnet ist. Sämtliche Walzen sind als Profilwalzen ausgebildet; ihr Profil entspricht dem Blechprofil und zumindest die Walzen 6, 7 des Walzenpaares sind außerdem entsprechend den herzustellenden Sicken profiliert. Dies ist deutlich der Fig. 4 zu entnehmen, die ein Trapezblech 1 zwischen den Walzen 6 und 7 des Walzenpaares zeigt. Bei dem in Fig. 4 dargestellten Blech werden die Sicken 5 genau in der Mitte der Außen- bzw. Innengurte und der Stege hergestellt.A roller roll forming machine is suitable for bending profiled sheets according to the inventive method. 2 or 3 consists of a pair of
Auf Fig. 2 und 3 zurückkommend sei erläutert, daß etwa die obere Walze 6 ortsfest gelagert und angetrieben, die untere Walze 7 jedoch gegen die Walze 6 zustellbar ist wodurch der Walzenspalt eingestellt werden kann. Das Blech 1 läuft von rechts in Richtung A über die hier nicht angestellte Biegewalze 8 in den Walzenspalt der Walzen 6, 7 ein und hierauf über die Biegewalze 9, deren Anstellgrad den Biegeradius bestimmt. Der Walzenspalt bzw. die Walzenprofilierungen sind so bemessen, daß die während des Biegens auftretenden Stauchungen im Sickenbereich zur Sickenbildung beisteuern. Es wird somit erreicht, daß die unvermeidliche Materialstauchung beim Biegen in genau definierten Zonen in Form von Sicken auftritt.Returning to FIGS. 2 and 3, it should be explained that, for example, the
Wie Fig. 3 zeigt, kann mittels der ersten Biegewalze 8 das Blech 1 vorgebogen und mittels der zweiten Biegewalze 9 auf den endgültigen Biegeradius gebracht werden. Andererseits ist es auch möglich, zwei Biegestationen der gezeigten Art hintereinanderzuschalten oder ein Blech zwei oder mehrmals bei jeweils verschieden angestellten Biegewalzen durch die Vorrichtung laufen zu lassen. Die jeweils günstigste Methode hängt von Art und Stärke des Blechmaterials sowie vom gewünschten Biegeradius ab.As FIG. 3 shows, the sheet 1 can be pre-bent by means of the
Mit Hilfe des erfindungsgemäßen Verfahrens ließen sich Trapeßbleche aus Stahl oder Aluminium ab Blechstärken von 0,6 mm und mit Trapezhöhen bis 200 mm biegen, wobei Biegeradien bis unter 4,50 m erreicht wurden. In manchen Fällen kann auch die Herstellung mehrerer nebeneinanderliegender Sicken von Vorteil sein.With the aid of the method according to the invention, trapezoidal sheets made of steel or aluminum could be bent from sheet thicknesses of 0.6 mm and with trapezoidal heights of up to 200 mm, bending radii of less than 4.50 m being achieved. In some cases, the production of several beads next to each other can also be advantageous.
Wenngleich das Verfahren nach der Erfindung an Hand eines Trapezbleches beschrieben ist, kann das Verfahren auch bei anderen Profilformen angewendet werden, z. B. bei Wellblechen, Blechen mit Dreieck- oder Rechteckprofil usw. Wesentlich ist bloß, daß die Sicken während des Biegens und im Bereich der beim Biegen auftretenden Druckspannungen ausgebildet werden.Although the method according to the invention is described using a trapezoidal sheet, the method can also be applied to other profile shapes, e.g. B. corrugated sheets, sheets with triangular or rectangular profile, etc. It is only essential that the beads are formed during bending and in the area of the compressive stresses occurring during bending.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KE346984A KE3469A (en) | 1979-07-10 | 1984-10-17 | Method for bending sheets and device for implementing the method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT4815/79 | 1979-07-10 | ||
| AT481579A AT359805B (en) | 1979-07-10 | 1979-07-10 | METHOD FOR BENDING SHEETS AND DEVICE FOR CARRYING OUT THE METHOD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0031822A1 EP0031822A1 (en) | 1981-07-15 |
| EP0031822B1 true EP0031822B1 (en) | 1983-05-04 |
Family
ID=3568678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80901210A Expired EP0031822B1 (en) | 1979-07-10 | 1981-02-09 | Method for bending sheets and device for implementing the method |
Country Status (25)
| Country | Link |
|---|---|
| US (1) | US4619131A (en) |
| EP (1) | EP0031822B1 (en) |
| AR (1) | AR220850A1 (en) |
| AT (1) | AT359805B (en) |
| AU (1) | AU546944B2 (en) |
| BE (1) | BE884095A (en) |
| BG (1) | BG42183A3 (en) |
| BR (1) | BR8008743A (en) |
| CA (1) | CA1136531A (en) |
| CS (1) | CS220329B2 (en) |
| DD (1) | DD151885A5 (en) |
| DE (1) | DE3062964D1 (en) |
| DK (1) | DK154479C (en) |
| ES (1) | ES493078A0 (en) |
| GR (1) | GR69202B (en) |
| HU (1) | HU178885B (en) |
| IT (1) | IT1127522B (en) |
| MX (1) | MX154475A (en) |
| NO (1) | NO151576C (en) |
| OA (1) | OA06578A (en) |
| PL (1) | PL225559A1 (en) |
| PT (1) | PT71505A (en) |
| WO (1) | WO1981000222A1 (en) |
| YU (1) | YU44191B (en) |
| ZA (1) | ZA804046B (en) |
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| DK8404709A (en) * | 1983-10-05 | 1985-04-06 | ||
| DE3738566A1 (en) * | 1987-04-01 | 1988-10-13 | Spaeth Gmbh & Co Kg Stahlbau B | METHOD AND DEVICE FOR BENDING A SHEET |
| US5056348A (en) * | 1989-06-01 | 1991-10-15 | Robertson-Ceco Corporation | Method of making a profiled sheet metal building unit |
| US4962622A (en) * | 1989-06-01 | 1990-10-16 | H. H. Robertson Company | Profiled sheet metal building unit and method for making the same |
| DE4425149A1 (en) * | 1994-07-15 | 1996-01-18 | Hoesch Siegerlandwerke Gmbh | Bent trapezoidal sheet metal profile for roof structures |
| DE4442211A1 (en) * | 1994-11-29 | 1996-06-05 | Hoesch Siegerlandwerke Gmbh | Roofing sheets with corrugations of trapezium-shaped cross=section |
| DE102005044423A1 (en) * | 2005-09-16 | 2007-03-22 | Blanco Gmbh + Co Kg | Method for producing a fold on a sheet metal element |
| CA2575279A1 (en) * | 2006-01-30 | 2007-07-30 | Link-Pipe Inc | Apparatus and method for sleeve or sheet corrugation |
| US20110232203A1 (en) * | 2010-03-24 | 2011-09-29 | M.I.C. Industries, Inc. | System and method for attaching a wall to a building structure |
| CN106623528B (en) * | 2017-01-03 | 2019-02-05 | 昆明理工大学 | A kind of continuous cold bending shaping method of roll-type of linear type cold bending steel sheet piling |
| CN113745635B (en) * | 2021-11-05 | 2022-03-01 | 三一技术装备有限公司 | Lamination device and lamination method |
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| US1354951A (en) * | 1919-10-04 | 1920-10-05 | Albert J Buhtz | Hoop-forming machine |
| US1793351A (en) * | 1929-03-13 | 1931-02-17 | R J Bell Company Inc | Barrel-forming machine |
| US2093933A (en) * | 1935-05-13 | 1937-09-21 | Kelsey Hayes Wheel Co | Rolling machine |
| US2279197A (en) * | 1939-08-22 | 1942-04-07 | Budd Edward G Mfg Co | Forming machine |
| US2335028A (en) * | 1942-05-05 | 1943-11-23 | Bardwell & Mcalister | Pinch type bending roll |
| US3073021A (en) * | 1956-06-06 | 1963-01-15 | Maurice W Goodwill | Method of forming modular frameless roof construction |
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| DE2134036A1 (en) * | 1971-07-08 | 1973-01-18 | Kloeckner Werke Ag | METHOD AND DEVICE FOR MANUFACTURING THE CURVING OF PROFILES, PLATES, STRIPES OR THE LIKE PROVIDED WITH A PROFILING |
| AT313684B (en) * | 1971-12-28 | 1974-02-25 | Ragailler Franz | Process and device for the production of thin-walled, large-area profiles |
| SU519246A1 (en) * | 1974-10-04 | 1976-06-30 | Украинский научно-исследовательский институт металлов | The method of bending profiled blanks |
| DE2506700A1 (en) * | 1975-02-18 | 1976-08-26 | Kloeckner Werke Ag | Bending plastically deformable profiles, profiled panels or bands - by stretching beyond flow limit and simultaneously applying additional flexural torque |
| US4154077A (en) * | 1978-03-06 | 1979-05-15 | Field Form, Inc. | Apparatus and method for manufacturing curved building panels |
| US4228672A (en) * | 1978-06-05 | 1980-10-21 | The Lockformer Company | Rotary notcher and former |
-
1979
- 1979-07-10 AT AT481579A patent/AT359805B/en not_active IP Right Cessation
-
1980
- 1980-06-30 BE BE0/201248A patent/BE884095A/en not_active IP Right Cessation
- 1980-07-01 GR GR62325A patent/GR69202B/el unknown
- 1980-07-02 CS CS804719A patent/CS220329B2/en unknown
- 1980-07-03 ES ES493078A patent/ES493078A0/en active Granted
- 1980-07-04 ZA ZA00804046A patent/ZA804046B/en unknown
- 1980-07-07 DE DE8080901210T patent/DE3062964D1/en not_active Expired
- 1980-07-07 US US06/580,773 patent/US4619131A/en not_active Expired - Lifetime
- 1980-07-07 PT PT71505A patent/PT71505A/en unknown
- 1980-07-07 AU AU60571/80A patent/AU546944B2/en not_active Ceased
- 1980-07-07 BR BR8008743A patent/BR8008743A/en not_active IP Right Cessation
- 1980-07-07 DD DD80222456A patent/DD151885A5/en unknown
- 1980-07-07 BG BG8048409A patent/BG42183A3/en not_active Expired
- 1980-07-07 WO PCT/AT1980/000023 patent/WO1981000222A1/en active IP Right Grant
- 1980-07-08 AR AR281687A patent/AR220850A1/en active
- 1980-07-08 YU YU1751/80A patent/YU44191B/en unknown
- 1980-07-08 HU HU80801703A patent/HU178885B/en not_active IP Right Cessation
- 1980-07-08 IT IT49187/80A patent/IT1127522B/en active
- 1980-07-09 PL PL22555980A patent/PL225559A1/xx unknown
- 1980-07-09 OA OA57161A patent/OA06578A/en unknown
- 1980-07-10 CA CA000355882A patent/CA1136531A/en not_active Expired
- 1980-07-10 MX MX183110A patent/MX154475A/en unknown
-
1981
- 1981-02-09 EP EP80901210A patent/EP0031822B1/en not_active Expired
- 1981-03-09 NO NO810788A patent/NO151576C/en unknown
- 1981-03-09 DK DK106781A patent/DK154479C/en active
Also Published As
| Publication number | Publication date |
|---|---|
| PT71505A (en) | 1980-08-01 |
| DK154479B (en) | 1988-11-21 |
| ATA481579A (en) | 1980-04-15 |
| CA1136531A (en) | 1982-11-30 |
| BG42183A3 (en) | 1987-10-15 |
| DD151885A5 (en) | 1981-11-11 |
| OA06578A (en) | 1981-08-31 |
| NO151576C (en) | 1985-05-08 |
| AU6057180A (en) | 1981-02-13 |
| ES8105592A1 (en) | 1981-07-01 |
| ZA804046B (en) | 1981-02-25 |
| DK154479C (en) | 1989-04-10 |
| AR220850A1 (en) | 1980-11-28 |
| IT8049187A0 (en) | 1980-07-08 |
| CS220329B2 (en) | 1983-03-25 |
| EP0031822A1 (en) | 1981-07-15 |
| IT1127522B (en) | 1986-05-21 |
| AU546944B2 (en) | 1985-09-26 |
| ES493078A0 (en) | 1981-07-01 |
| DE3062964D1 (en) | 1983-06-09 |
| NO810788L (en) | 1981-03-09 |
| BR8008743A (en) | 1981-05-05 |
| YU175180A (en) | 1984-12-31 |
| AT359805B (en) | 1980-12-10 |
| NO151576B (en) | 1985-01-21 |
| US4619131A (en) | 1986-10-28 |
| MX154475A (en) | 1987-08-28 |
| YU44191B (en) | 1990-04-30 |
| PL225559A1 (en) | 1981-08-07 |
| BE884095A (en) | 1980-10-16 |
| HU178885B (en) | 1982-07-28 |
| WO1981000222A1 (en) | 1981-02-05 |
| DK106781A (en) | 1981-03-09 |
| GR69202B (en) | 1982-05-06 |
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