EP0060965A2 - Apparatus for straightening sheet metal - Google Patents

Apparatus for straightening sheet metal Download PDF

Info

Publication number
EP0060965A2
EP0060965A2 EP81890180A EP81890180A EP0060965A2 EP 0060965 A2 EP0060965 A2 EP 0060965A2 EP 81890180 A EP81890180 A EP 81890180A EP 81890180 A EP81890180 A EP 81890180A EP 0060965 A2 EP0060965 A2 EP 0060965A2
Authority
EP
European Patent Office
Prior art keywords
frame
rollers
straightening
cylinder
adjustable
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.)
Granted
Application number
EP81890180A
Other languages
German (de)
French (fr)
Other versions
EP0060965B1 (en
EP0060965A3 (en
Inventor
Karl Palmannshofer
Werner Pölzl
Leopold Zamecnik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0060965A2 publication Critical patent/EP0060965A2/en
Publication of EP0060965A3 publication Critical patent/EP0060965A3/en
Application granted granted Critical
Publication of EP0060965B1 publication Critical patent/EP0060965B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a device for straightening sheet metal strips with two opposing sets of freely rotatable straightening rollers mounted in a frame and with a pair of drive rollers arranged downstream of the straightening rollers.
  • a disadvantage of such a driver stand is the distance between the straightening rolls and the driver rolls of the driver stand, which determines the length of the non-straightenable start of the belt.
  • the invention is therefore based on the object to avoid these deficiencies and to improve a device for straightening sheet metal strips of the type described in such a way that the non-straightenable strip start is kept to a minimum in the case of freely rotatable straightening rollers and a separate driver frame is unnecessary.
  • the frame consists of a lower part and an upper part which can be placed on the lower part and braced relative thereto by means of a tensioning device, that both frame parts each carry one of the two drive rollers of the pair of drive rollers in addition to a straightening roller set, and that at least one drive roller is adjustably mounted perpendicular to its axis and transversely to the direction of belt travel and is supported on the associated frame part by means of at least one spring or one cylinder.
  • the drive roller pair can be connected directly to the straightening roller sets due to the position of the drive rollers via the adjustable upper part of the frame, so that the distance between the straightening rollers and the driving rollers actually increases due to the lack of a separate adjusting device for the driving rollers a minimum can remain limited. Since the bending forces which occur, which are considerable when straightening thick sheet metal strips, in such a straightening device, however, via the tensioning device between the upper and lower part of the frame must be applied, the clamping device must be made comparatively heavy.
  • the straightening rollers of the upper straightening roller set can be adjusted to different extents via a corresponding actuator, so that the space available in the area of the lower straightening roller set is larger, so that the driving roller assigned to the lower part of the frame can be stored in an adjustable manner without increasing the distance to the straightening rollers to have to.
  • the adjustable drive roller can also be rotatably mounted in a rocker which is articulated on the associated frame part and acted upon by the spring or the cylinder. Such storage does not require extensive, lateral guide parts.
  • a spring is used to limit the pressure forces between the drive rollers, essentially constant pressure forces must be expected. With very different bandwidths, however, constant compressive forces lead to very different compressive stresses, so that in such cases it would be desirable to set the maximum compressive forces that can be applied.
  • This setting can be easily achieved with the aid of a support for the adjustable drive roller by a cylinder, specifically by means of a variable application pressure of the cylinder supporting the adjustable drive roller, for example via an adjustable pressure limiting valve.
  • a support via cylinders has the advantage that the drive rollers can be released even though the two frame parts are braced against each other.
  • the belt pass plane of the drive rollers needs to be selected somewhat higher than that of the straightening rollers, so that after the lower, adjustable drive roller has been lowered, the belt can run through the cylinder supporting it without contact between the drive rollers.
  • the belt drive can therefore also be provided by a subordinate driver frame.
  • the frame of the illustrated devices for straightening sheet metal strips is composed of two parts, a fixed frame lower part 1 and an upper part 3 articulated on the lower part via an axis 2, the upper part of the frame being positioned against the lower part with the aid of a tensioning cylinder 4 mounted on the lower part 1 and opposite the latter can be braced.
  • the straightening rollers 6, which are supported on support rollers 5, are mounted in the two frame parts 1 and 3 without a drive.
  • the upper straightening rollers with their support rollers can be adjusted via corresponding actuators 7.
  • the bending radius of the sheet metal strip between the opposing straightening roller sets can thus be selected in accordance with the material properties and the strip thicknesses.
  • the threading of a sheet metal strip can be supported by two driven drive rollers 8, which are arranged upstream of the straightening rollers 6 in the direction of strip travel, the upper drive roller 8 being held in a rocker arm 9 mounted on the lower frame part 1 in order to engage it.
  • a cylinder 10 is articulated between the rocker 9 and the lower frame part 1, which causes the upper drive roller 8 to be adjusted. So that when the band is threaded it cannot get lost, a band lifter 11 is pivotally mounted in the lower part 1 and can be pivoted up into the path of the band to be threaded using an actuating cylinder 12, so that the band start against a guide wall 13 of the upper part of the frame 3 out and is safely guided by this between the straightening rollers.
  • a pair of driving rollers is arranged downstream of the straightening rollers in the direction of belt travel, the driving rollers 14 and 15 of which in the two frame parts 1 and 3 are directly connected to the Straightening rollers 6 are stored.
  • the driving roller 14 of the lower part 1 is mounted in a rocker arm 16 which can be pivoted about the axis 17 of the lower part 1.
  • a compression spring 18 is used according to FIGS. 1 and 2, which is designed according to the embodiment as a plate spring assembly.
  • This resilient support of the lower drive roller 14 requires that the pressure forces acting between the drive rollers 14 and 15 and the band carried out between them do not depend on the tensioning force of the tensioning cylinder 4, but are limited by the force of the spring 18. Since the design of the tensioning cylinder 4 must be matched to the largest, still permissible dimensions of a sheet metal strip to be straightened with the aid of this device, an excessive proportion of these tensioning forces would act on the drive rollers 14, 15 and on the strip guided between them with a smaller sheet thickness. what is prevented by the spring 18.
  • FIGS. 3 and 4 The construction of the device for straightening sheet metal strips shown in FIGS. 3 and 4 is basically the same as the construction according to FIGS. 1 and 2. The difference is that according to FIGS. 3 and 4 instead of the compression spring 18 supporting the rocker arm 16 a cylinder 19 is provided. A constant application can also be effected via this cylinder 19 force applied to the rocker 16, so that again the more v sam nascent between the drive rollers 14 and 15 compressive forces are limited.
  • the cylinder 19 offers the advantage, however, that its pressure can be changed, for example, via an adjustable pressure relief valve. This gives you the option of being able to choose the maximum pressure loads according to the belt dimensions and properties.
  • the cylinder 19 allows the lower drive roller 14 to be lowered below the pass plane of the sheet metal strip, as is indicated in FIG. 4. This is associated with an exemption of the drive rollers 14 and 15, which permits straightening with a belt tension via a separate drive frame.
  • the device shown can therefore also interact with other belt processing device without a drive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

1. Apparatus for levelling strip metal comprising a frame, which consists of a base part (1) and a top part (3), which is engageable with the base part and adapted to be forced against the base part by a stressing device, also comprising a set of levelling rollers (6) in each frame part (1, 3) and two pinch rollers (14, 15), which are associated with respective frame parts (1, 3) and in the direction of travel of the strip succeed the levelling rollers (6), wherein at least one pinch roller (14) is mounted to be adjustable transversely to its axis and transverse to the direction of travel of the strip and is adapted to be acted upon by a force, characterized in that the top part (3) of the frame is pivoted to the base part (1) of the frame in front of the levelling rollers (6) in the direction of travel of the strip, that the levelling rollers (6) are freely rotatably mounted, and that the adjustably mounted pinch roller (14) is supported on the associated frame part (1) by means of a spring (18) or a cylinder (19).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Richten von Blechbändern mit zwei einander gegenüberliegenden Sätzen von in einem Gestell gelagerten, frei drehbaren Richtrollen und mit einem den Richtrollen in Banddurchlaufrichtung nachgeordneten Treibrollenpaar.The invention relates to a device for straightening sheet metal strips with two opposing sets of freely rotatable straightening rollers mounted in a frame and with a pair of drive rollers arranged downstream of the straightening rollers.

Da das zu richtende Blechband zwischen den beiden einander gegenüberliegenden Richtrollensätzen hindurchgezogen werden muß, was zum Teil erhebliche Zugkräfte verlangt, müssen entweder die Richtrollen selbst angetrieben oder den Richtrollen in Banddurchlaufrichtung Treibrollen nachgeordnet werden. Vorrichtungen mit angetriebenen Richtrollen sind nicht nur in konstruktiver Hinsicht vergleichsweise aufwendig, sondern auch in ihrem Anwendungsgebiet beschränkt, weil die Richtrollen nicht ohne Schwierigkeiten durch Richtrollen mit einem anderen Durchmesser ausgetauscht werden können. Es werden daher vielfach frei drehbare Richtrollen vorgezogen, die jedoch ein nachgeordnetes Treibergerüst bedingen, das den erforderlichen Reibungsschluß zwischen den angetriebenen Treibrollen und dem zu fördernden Blechband sicherzustellen hat, wobei die aufgebrachten Druckkräfte im Hinblick auf die Belastung des Blechbandes und der Treibrollen beschränkt bleiben müssen.Since the sheet metal strip to be straightened has to be pulled between the two sets of straightening rollers lying opposite one another, which in some cases requires considerable tensile forces, either the straightening rollers themselves have to be driven or driving rollers have to be arranged downstream of the straightening rollers in the direction of strip travel. Devices with driven straightening rollers are not only comparatively complex in terms of design, but also limited in their field of application because the straightening rollers cannot be easily replaced by straightening rollers with a different diameter. It is therefore often preferred freely rotatable straightening rollers, which, however, require a subordinate driver frame, which must ensure the required frictional connection between the driven drive rollers and the sheet metal strip to be conveyed, the pressure forces applied having to remain limited with regard to the load on the metal strip and the drive rollers.

Als Nachteil eines solchen Treibergerüstes ist der sich zwischen den Richtrollen und den Treiberrollen des Treibergerüstes ergebende Abstand anzusehen, der die Länge des nicht richtbaren Bandanfanges bestimmt. Dazu kommt selbstverständlich noch, daß ein eigenes Treibergerüst vorgesehen werden muß.A disadvantage of such a driver stand is the distance between the straightening rolls and the driver rolls of the driver stand, which determines the length of the non-straightenable start of the belt. In addition, of course, there must be a separate driver framework.

Der Erfindung liegt somit die Aufgabe zugrunde, diese Mängel zu vermeiden und eine Vorrichtung zum Richten von Blechbändern der eingangs geschilderten Art so zu verbessern, daß bei frei drehbaren Richtrollen der nicht richtbare Bandanfang auf ein Minimum beschränkt bleibt und ein gesondertes Treibergerüst unnötig wird.The invention is therefore based on the object to avoid these deficiencies and to improve a device for straightening sheet metal strips of the type described in such a way that the non-straightenable strip start is kept to a minimum in the case of freely rotatable straightening rollers and a separate driver frame is unnecessary.

Die Erfindung löst die gestellte Aufgabe dadurch, daß das Gestell aus einem Unterteil und einem an den Unterteil anstellbaren und diesem gegenüber mittels einer Spanneinrichtung verspannbaren Oberteil besteht, daß beide Gestellteile neben je einem Richtrollensatz jeweils eine der beiden Treibrollen des Treibrollenpaares tragen und daß zumindest eine Treibrolle senkrecht zu ihrer Achse und quer zur Banddurchlaufrichtung verstellbar gelagert und mittels wenigstens einer Feder oder eines Zylinders am zugehörigen Gestellteil abgestützt ist.The invention achieves the stated object in that the frame consists of a lower part and an upper part which can be placed on the lower part and braced relative thereto by means of a tensioning device, that both frame parts each carry one of the two drive rollers of the pair of drive rollers in addition to a straightening roller set, and that at least one drive roller is adjustably mounted perpendicular to its axis and transversely to the direction of belt travel and is supported on the associated frame part by means of at least one spring or one cylinder.

Durch die Lagerung der Treibrollen im Gestell der Richtvorrichtung kann auf Grund der Anstellung der Treibwalzen über den anstellbaren Gestelloberteil das Treibrollenpaar unmittelbar an die Richtrollensätze angeschlossen werden, so daß der Abstand zwischen den Richtrollen und den Treibrollen wegen des Fehlens einer gesonderten Anstellvorrichtung für die Treibrollen tatsächlich auf ein Minimum beschränkt bleiben kann. Da die auftretenden Biegekräfte, die beim Richten von stärkeren Blechbändern erheblich sind, bei einer solchen Richtvorrichtung jedoch über die Spanneinrichtung zwischen dem Ober- und Unterteil des Gestelles aufgebracht werden müssen, muß die Spanneinrichtung vergleichsweise schwer ausgebildet werden. Dies bedeutet, daß bei geringeren Blechstärken ein erheblicher Teil der durch die Spanneinrichtung aufgebrachten Kräfte auf die Treibrollen und das zwischen ihnen geführte Blechband wirkt, was jedoch verhindert werden soll. Aus diesem Grunde ist zumindest für eine Treibrolle eine federnde Abstützung vorgesehen, über die die zwischen den Treibrollen wirkenden Druckkräfte beschränkt werden können. Durch die Kombination der angegebenen Maßnahmen kann demnach nicht nur ein zufriedenstellender Bandantrieb mit einem geringen Konstruktionsaufwand sichergestellt, sondern auch die Länge des nicht richtbaren Bandanfanges auf ein Mindestmaß beschränkt werden.Due to the mounting of the drive rollers in the frame of the straightening device, the drive roller pair can be connected directly to the straightening roller sets due to the position of the drive rollers via the adjustable upper part of the frame, so that the distance between the straightening rollers and the driving rollers actually increases due to the lack of a separate adjusting device for the driving rollers a minimum can remain limited. Since the bending forces which occur, which are considerable when straightening thick sheet metal strips, in such a straightening device, however, via the tensioning device between the upper and lower part of the frame must be applied, the clamping device must be made comparatively heavy. This means that with smaller sheet thicknesses, a considerable part of the forces applied by the tensioning device acts on the drive rollers and the sheet metal strip guided between them, which, however, should be prevented. For this reason, a resilient support is provided at least for a driving roller, by means of which the compressive forces acting between the driving rollers can be limited. By combining the specified measures, not only can a satisfactory belt drive be ensured with little construction effort, but the length of the non-straightenable belt start can also be reduced to a minimum.

Obwohl grundsätzlich für den Gestelloberteil eine Verschiebeführung möglich wäre, empfiehlt sich eine Anlenkung des Gestelloberteiles am Gestellunterteil, weil die Führung des Gestelloberteiles vereinfacht wird und als Spanneinrichtung ein an den beiden Gestellteilen angreifender Spannzylinder Verwendung finden kann.Although in principle a sliding guide would be possible for the upper frame part, it is advisable to link the upper frame part to the lower frame part because the guidance of the upper frame part is simplified and a clamping cylinder acting on the two frame parts can be used as a clamping device.

Da im allgemeinen die Richtrollen des oberen Richtrollensatzes über einen entsprechenden Stelltrieb unterschiedlich weit angestellt werden können, ist das Platzangebot im Bereich des unteren Richtrollensatzes größer, so daß die dem Gestellunterteil zugeordnete Treibrolle verstellbar gelagert werden kann, ohne eine Abstandsvergrößerung zu den Richtrollen hin in Kauf nehmen zu müssen. Aus diesem Grunde kann auch die verstellbare Treibrolle in einer am zugehörigen Gestellteil angelenkten, von der Feder oder dem Zylinder beaufschlagten Schwinge drehbar gelagert sein. Eine solche Lagerung bedingt nämlich keine ausladenden, seitlichen Führungsteile.Since in general the straightening rollers of the upper straightening roller set can be adjusted to different extents via a corresponding actuator, the space available in the area of the lower straightening roller set is larger, so that the driving roller assigned to the lower part of the frame can be stored in an adjustable manner without increasing the distance to the straightening rollers to have to. For this reason, the adjustable drive roller can also be rotatably mounted in a rocker which is articulated on the associated frame part and acted upon by the spring or the cylinder. Such storage does not require extensive, lateral guide parts.

Wird zur Beschränkung der Druckkräfte zwischen den Treibrollen eine Feder verwendet, so muß mit im wesentlichen konstanten Druckkräften gerechnet werden. Bei sehr unterschiedlichen Bandbreiten führen jedoch konstante Druckkräfte zu sehr unterschiedlichen Druckspannungen, so daß für solche Fälle eine Einstellung der maximal aufbringbaren Druckkräfte wünschenswert wäre. Diese Einstellung kann mit Hilfe einer Abstützung der verstellbaren Treibrolle durch einen Zylinder einfach erreicht werden, und zwar durch einen veränderbaren Beaufschlagungsdruck des die verstellbare Treibrolle abstützenden Zylinders, beispielsweise über ein einstellbares Druckbegrenzungsventil. Darüber hinaus bietet ein.Abstützen über Zylinder noch den Vorteil, daß eine Freistellung der Treibrollen möglich wird, obwohl die beiden Gestellteile gegeneinander verspannt sind. Zu diesem Zweck braucht ja lediglich die Banddurchlaufebene der Treibrollen etwas höher als die der Richtrollen gewählt zu werden, so daß nach einem Absenken der unteren, verstellbaren Treibrolle über den sie abstützenden Zylinder das Band berührungslos zwischen den Treibrollen hindurchlaufen kann. Der Bandantrieb kann demnach auch durch ein nachgeordnetes Treibergerüst erfolgen.If a spring is used to limit the pressure forces between the drive rollers, essentially constant pressure forces must be expected. With very different bandwidths, however, constant compressive forces lead to very different compressive stresses, so that in such cases it would be desirable to set the maximum compressive forces that can be applied. This setting can be easily achieved with the aid of a support for the adjustable drive roller by a cylinder, specifically by means of a variable application pressure of the cylinder supporting the adjustable drive roller, for example via an adjustable pressure limiting valve. In addition, a support via cylinders has the advantage that the drive rollers can be released even though the two frame parts are braced against each other. For this purpose, only the belt pass plane of the drive rollers needs to be selected somewhat higher than that of the straightening rollers, so that after the lower, adjustable drive roller has been lowered, the belt can run through the cylinder supporting it without contact between the drive rollers. The belt drive can therefore also be provided by a subordinate driver frame.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen

  • Fig. 1 eine erfindungsgemäße Vorrichtung zum Richten von Blechbändern in der Einfädelstellung im vereinfachten Längsschnitt,
  • Fig. 2 die in Fig. 1 dargestellte Vorrichtung in der Richtstellung,
  • Fig. 3 eine Konstruktionsvariante einer erfindungsgemäßen Vorrichtung in der Richtstellung mit angestellten Treiberrollen und
  • Fig. 4 eine der Fig. 3 entsprechende Darstellung der Vorrichtung, mit dem Unterschied, daß die Treibrollen freigestellt sind.
The subject matter of the invention is shown in the drawing, for example. Show it
  • 1 shows a device according to the invention for straightening sheet metal strips in the threading position in a simplified longitudinal section,
  • 2 shows the device shown in FIG. 1 in the correct position,
  • Fig. 3 shows a design variant of a device according to the invention in the straightening position with driver roles and
  • Fig. 4 is a corresponding to Fig. 3 representation of the front direction, with the difference that the driving rollers are free.

Das Gestell der dargestellten Vorrichtungen zum Richten von Blechbändern ist aus zwei Teilen, einem feststehenden Gestellunterteil 1 und einem am Unterteil über eine Achse 2 angelenkten Oberteil 3 zusammengesetzt, wobei der Gestelloberteil mit Hilfe eines am Unterteil 1 gelagerten Spannzylinders 4 an das Unterteil angestellt und gegenüber diesem verspannt werden kann. Die auf Stützrollen 5 abgestützten Richtrollen 6 sind in den beiden Gestellteilen 1 und 3 antriebslos gelagert. Um die Eintauchtiefe der oberen Richtrollen zwischen den unteren Richtrollen an die jeweiligen Verhältnisse anpassen zu können, sind die oberen Richtrollen mit ihren Stützrollen über entsprechende Stelltriebe 7 verstellbar. Der Biegeradius des Blechbandes zwischen den einander gegenüberliegenden Richtrollensätzen kann somit entsprechend den Werkstoffeigenschaften und den Bandstärken gewählt werden.The frame of the illustrated devices for straightening sheet metal strips is composed of two parts, a fixed frame lower part 1 and an upper part 3 articulated on the lower part via an axis 2, the upper part of the frame being positioned against the lower part with the aid of a tensioning cylinder 4 mounted on the lower part 1 and opposite the latter can be braced. The straightening rollers 6, which are supported on support rollers 5, are mounted in the two frame parts 1 and 3 without a drive. In order to be able to adapt the immersion depth of the upper straightening rollers between the lower straightening rollers to the respective conditions, the upper straightening rollers with their support rollers can be adjusted via corresponding actuators 7. The bending radius of the sheet metal strip between the opposing straightening roller sets can thus be selected in accordance with the material properties and the strip thicknesses.

Das Einfädeln eines Blechbandes kann durch zwei angetriebene Treibrollen 8, die in Banddurchlaufrichtung den Richtrollen 6 vorgeordnet sind, unterstützt werden, wobei zur Anstellung der oberen Treibrolle 8 diese in einer am Gestellunterteil 1 gelagerten Schwinge 9 gehalten wird. Zwischen der Schwinge 9 und dem Gestellunterteil 1 ist ein Zylinder 10 angelenkt, der die Anstellung der oberen Treibrolle 8 bewirkt. Damit sich beim Einfädeln des Bandes dieses sich nicht verlaufen kann, ist außerdem ein im Unterteil 1 schwenkbar gelagerter Bandheber 11 vorgesehen, der mit Hilfe eines Stellzylinders 12 in die Bahn des einzufädelnden Bandes hochgeschwenkt werden kann, so daß der Bandanfang gegen eine Leitwand 13 des Gestelloberteiles 3 geführt und von dieser sicher zwischen den Richtrollen hindurchgeleitet wird.The threading of a sheet metal strip can be supported by two driven drive rollers 8, which are arranged upstream of the straightening rollers 6 in the direction of strip travel, the upper drive roller 8 being held in a rocker arm 9 mounted on the lower frame part 1 in order to engage it. A cylinder 10 is articulated between the rocker 9 and the lower frame part 1, which causes the upper drive roller 8 to be adjusted. So that when the band is threaded it cannot get lost, a band lifter 11 is pivotally mounted in the lower part 1 and can be pivoted up into the path of the band to be threaded using an actuating cylinder 12, so that the band start against a guide wall 13 of the upper part of the frame 3 out and is safely guided by this between the straightening rollers.

Um das zu richtende Band nach dem Schließen des Gestelloberteiles 3 über den Spannzylinder 4 zwischen den angestellten Richtrollen 6 hindurchziehen zu können, ist den Richtrollen in Banddurchlaufrichtung ein Treibrollenpaar nachgeordnet, dessen Treibrollen 14 und 15 in den beiden Gestellteilen 1 und 3 im unmittelbaren Anschluß an die Richtrollen 6 gelagert sind. Zum Unterschied zur Treibrolle 15 des Gestelloberteiles 3 ist die Treib.rolle 14 des Unterteiles 1 in einer Schwinge 16 gelagert, die um die Achse 17 des Unterteiles 1 verschwenkbar ist. Zur Abstützung der Schwinge 16 und damit der Treibrolle 14 gegenüber dem Unterteil 1 dient nach den Fig. 1 und 2 eine Druckfeder 18, die gemäß dem Ausführungsbeispiel als Tellerfederpaket ausgebildet ist. Diese federnde Abstützung der unteren Treibrolle 14 bedingt, daß die zwischen den Treibrollen 14 und 15 und dem zwischen ihnen durchgeführten Band wirksam werdenden Druckkräfte nicht von der Spannkraft des Spannzylinders 4 abhängen, sondern durch die Kraft der Feder 18 beschränkt sind. Da die Auslegung des Spannzylinders 4 auf die größten, noch zulässigen Abmessungen eines mit Hilfe dieser Vorrichtung zu richtenden Blechbandes abgestimmt sein muß, würde bei einer geringeren Blechstärke ein übermäßiger Anteil dieser Spannkräfte auf die Treibrollen 14, 15 und auf das zwischen ihnen geführte Band wirken, was durch die Feder 18 verhindert wird.In order to be able to pull the tape to be straightened after closing the upper frame part 3 via the tensioning cylinder 4 between the employed straightening rollers 6, a pair of driving rollers is arranged downstream of the straightening rollers in the direction of belt travel, the driving rollers 14 and 15 of which in the two frame parts 1 and 3 are directly connected to the Straightening rollers 6 are stored. In contrast to the driving roller 15 of the upper frame part 3, the driving roller 14 of the lower part 1 is mounted in a rocker arm 16 which can be pivoted about the axis 17 of the lower part 1. To support the rocker 16 and thus the drive roller 14 with respect to the lower part 1, a compression spring 18 is used according to FIGS. 1 and 2, which is designed according to the embodiment as a plate spring assembly. This resilient support of the lower drive roller 14 requires that the pressure forces acting between the drive rollers 14 and 15 and the band carried out between them do not depend on the tensioning force of the tensioning cylinder 4, but are limited by the force of the spring 18. Since the design of the tensioning cylinder 4 must be matched to the largest, still permissible dimensions of a sheet metal strip to be straightened with the aid of this device, an excessive proportion of these tensioning forces would act on the drive rollers 14, 15 and on the strip guided between them with a smaller sheet thickness. what is prevented by the spring 18.

Der Aufbau der in den Fig. 3 und 4 dargestellten Vorrichtung zum Richten von Blechbändern gleicht grundsätzlich der Konstruktion gemäß den Fig. 1 und 2. Der Unterschied besteht darin, daß entsprechend den Fig. 3 und 4 an Stelle der die Schwinge 16 abstützenden Druckfeder 18 ein Zylinder 19 vorgesehen ist. Auch über diesen Zylinder 19 kann eine konstante Beaufschlagungskraft auf die Schwinge 16 ausgeübt werden, so daß wiederum die zwischen den Treibrollen 14 und 15 wirkv sam werdenden Druckkräfte beschränkt werden. Der Zylinder 19 bietet allerdings den Vorteil, daß sein Beaufschlagungsdruck beispielsweise über ein einstellbares Druckbegrenzungsventil verändert werden kann. Damit ist die Möglichkeit gegeben, die maximalen Druckbelastungen entsprechend den Bandabmessungen und -eigenschaften wählen zu können.The construction of the device for straightening sheet metal strips shown in FIGS. 3 and 4 is basically the same as the construction according to FIGS. 1 and 2. The difference is that according to FIGS. 3 and 4 instead of the compression spring 18 supporting the rocker arm 16 a cylinder 19 is provided. A constant application can also be effected via this cylinder 19 force applied to the rocker 16, so that again the more v sam nascent between the drive rollers 14 and 15 compressive forces are limited. The cylinder 19 offers the advantage, however, that its pressure can be changed, for example, via an adjustable pressure relief valve. This gives you the option of being able to choose the maximum pressure loads according to the belt dimensions and properties.

Außerdem erlaubt der Zylinder 19 eine Absenkung der unteren Treibrolle 14 unter die Durchlaufebene des Blechbandes, wie dies in der Fig. 4 angedeutet ist. Da- mit ist eine Freistellung der Treibrollen 14 und 15 verbunden, die ein Richten mit einem Bandzug über ein gesondertes Treibgerüst erlaubt. Die dargestellte Vorrichtung kann daher auch im Zuge mit anderen Bandbearbeitungsvorrichtung antriebslos zusammenwirken.In addition, the cylinder 19 allows the lower drive roller 14 to be lowered below the pass plane of the sheet metal strip, as is indicated in FIG. 4. This is associated with an exemption of the drive rollers 14 and 15, which permits straightening with a belt tension via a separate drive frame. The device shown can therefore also interact with other belt processing device without a drive.

Claims (5)

1. Vorrichtung zum Richten von Blechbändern mit zwei einander gegenüberliegenden Sätzen von in einem Gestell gelagerten, frei drehbaren Richtrollen und mit einem den Richtrollen in Banddurchlaufrichtung nachgeordneten Treibrollenpaar, dadurch gekennzeichnet, daß das Gestell aus einem Unterteil (1) und einem an den Unterteil (1) anstellbaren und diesem gegenüber mittels einer Spanneinrichtung (Spannzylinder 4) verspannbaren Oberteil (3) besteht, daß beide Gestellteile (1, 3) neben je einem Richtrollensatz (6) jeweils eine der beiden Treibrollen (14, 15) des Treibrollenpaares tragen und daß zumindest eine Treibrolle (14) senkrecht zu ihrer Achse und quer zur Banddurchlaufrichtung verstellbar lagert und mittels wenigstens einer Feder (18) oder eines Zylinders (19) am zugehörigen Gestellteil (1) abgestützt ist.1. Device for straightening sheet metal strips with two opposing sets of freely rotatable straightening rollers mounted in a frame and with a pair of driving rollers arranged downstream of the straightening rollers, characterized in that the frame consists of a lower part (1) and one on the lower part (1 ) adjustable and this by means of a tensioning device (tensioning cylinder 4) braced upper part (3) that both frame parts (1, 3) in addition to each straightening roller set (6) each carry one of the two drive rollers (14, 15) of the drive roller pair and that at least a drive roller (14) is mounted so as to be adjustable perpendicular to its axis and transversely to the direction of belt travel and is supported on the associated frame part (1) by means of at least one spring (18) or one cylinder (19). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Gestelloberteil (3) am Gestellunterteil (1) angelenkt ist und daß an den beiden Gestellteilen (1, 3) wenigstens ein Spannzylinder (4) als Spanneinrichtung angreift.2. Device according to claim 1, characterized in that the upper frame part (3) is articulated on the lower frame part (1) and that on the two frame parts (1, 3) at least one clamping cylinder (4) acts as a clamping device. 3. Vorrichtung nach Anspruch1 oder 2, dadurch gekennzeichnet, daß die Treibrolle (14) des Gestellunterteiles (1) verstellbar gelagert ist.3. Apparatus according to claim 1 or 2, characterized in that the drive roller (14) of the lower frame part (1) is adjustably mounted. 4. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die verstellbare Treibrolle (14) in einer am zugehörigen Gestellteil (1) angelenkten, von der Feder (18) oder dem Zylinder (19) beaufschlagten Schwinge (16) drehbar gelagert ist.4. Device according to claims 1 to 3, characterized in that the adjustable drive roller (14) is rotatably mounted in a on the associated frame part (1) articulated by the spring (18) or the cylinder (19) rocker arm (16) . 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Beaufschlagungsdruck des die verstellbare Treibrolle (14) abstützenden Zylinders (19) beispielsweise über ein einstellbares Druckbegrenzungsventil veränderbar ist.5. Device according to one of claims 1 to 4, characterized in that the application pressure of the adjustable drive roller (14) supporting cylinder (19) is variable, for example via an adjustable pressure relief valve.
EP19810890180 1981-03-23 1981-10-23 Apparatus for straightening sheet metal Expired EP0060965B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT134381A AT368411B (en) 1981-03-23 1981-03-23 DEVICE FOR STRAIGHTING SHEET STRIPS
AT1343/81 1981-03-23

Publications (3)

Publication Number Publication Date
EP0060965A2 true EP0060965A2 (en) 1982-09-29
EP0060965A3 EP0060965A3 (en) 1983-06-22
EP0060965B1 EP0060965B1 (en) 1986-01-02

Family

ID=3511847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810890180 Expired EP0060965B1 (en) 1981-03-23 1981-10-23 Apparatus for straightening sheet metal

Country Status (3)

Country Link
EP (1) EP0060965B1 (en)
AT (1) AT368411B (en)
DE (1) DE3173398D1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989007992A1 (en) * 1988-03-01 1989-09-08 Davy Mckee (Sheffield) Limited The rolling of metal strip
EP0510278A1 (en) * 1991-04-23 1992-10-28 Kohan Sendan Kikai Kabushiki Kaisha Roller leveller
FR2796321A1 (en) * 1999-07-12 2001-01-19 B S B Method for introducing band of material in rectifier includes system of jaws that goes through rectifier, grips end of band, and goes back through rectifier with band
WO2002076649A1 (en) * 2001-03-21 2002-10-03 Sms Demag Aktiengesellschaft Pre-straightening machine for straightening, in particular, the beginning and end of rolled metal strips or sheet metal strips
EP2177292A1 (en) * 2008-10-17 2010-04-21 Dimeco Alipresse S.A.S. Device for straightening and feeding a semi-rigid band of material into a machine
CN102950171A (en) * 2012-11-19 2013-03-06 无锡九条龙汽车设备有限公司 Upper straightening roll device
WO2014128614A1 (en) 2013-02-19 2014-08-28 F.I.M.I. - Fabbrica Impianti Macchine Industriali - S.P.A. Roll leveller for metal sheets and a process for levelling a metal sheet with it
CN106077159A (en) * 2016-08-26 2016-11-09 刘书雄 A kind of industry steel plate gag press

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102688905A (en) * 2012-06-15 2012-09-26 中冶华天南京工程技术有限公司 Pinch roll device with adjustable upper and lower rolls
CN112605163B (en) * 2020-12-04 2022-12-30 江永县青鹤铝业有限公司 Interrupted feed structure and orthopedic paint spraying apparatus of aluminum alloy plate
CN113275415B (en) * 2021-06-23 2023-09-05 内蒙古工业大学 Mechanical device of straightening machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2158163A1 (en) * 1971-11-05 1973-06-15 Canto Fernand Strip dresser - with operational speeds which can be varied in very short response times
DE2233932A1 (en) * 1972-07-11 1974-01-24 Demag Ag Shock absorber - for welded strip rolling mill with gas cushion and sliding disc
DE2723720A1 (en) * 1976-06-25 1977-12-29 Voest Ag DEVICE FOR MAINTAINING A CERTAIN TENSION EXERCISED ON A METAL STRAP DURING A DIRECTIONAL PROCESS
FR2379330A1 (en) * 1977-02-04 1978-09-01 Zerhoch Vorrichtungs Masch SHEET AND FLAT MATERIAL DRESSING MACHINE
DE3042383A1 (en) * 1979-11-22 1981-06-11 Aida Engineering, Ltd., Sagamihara, Kanagawa SMOOTHING DEVICE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2158163A1 (en) * 1971-11-05 1973-06-15 Canto Fernand Strip dresser - with operational speeds which can be varied in very short response times
DE2233932A1 (en) * 1972-07-11 1974-01-24 Demag Ag Shock absorber - for welded strip rolling mill with gas cushion and sliding disc
DE2723720A1 (en) * 1976-06-25 1977-12-29 Voest Ag DEVICE FOR MAINTAINING A CERTAIN TENSION EXERCISED ON A METAL STRAP DURING A DIRECTIONAL PROCESS
FR2379330A1 (en) * 1977-02-04 1978-09-01 Zerhoch Vorrichtungs Masch SHEET AND FLAT MATERIAL DRESSING MACHINE
DE3042383A1 (en) * 1979-11-22 1981-06-11 Aida Engineering, Ltd., Sagamihara, Kanagawa SMOOTHING DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KUZNECHNO-SHTAMPOVOCHNOE PROIZVODSTVO, Nr. 10, 1978, Seiten 36-39, Moscou, (SU) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989007992A1 (en) * 1988-03-01 1989-09-08 Davy Mckee (Sheffield) Limited The rolling of metal strip
EP0510278A1 (en) * 1991-04-23 1992-10-28 Kohan Sendan Kikai Kabushiki Kaisha Roller leveller
FR2796321A1 (en) * 1999-07-12 2001-01-19 B S B Method for introducing band of material in rectifier includes system of jaws that goes through rectifier, grips end of band, and goes back through rectifier with band
WO2002076649A1 (en) * 2001-03-21 2002-10-03 Sms Demag Aktiengesellschaft Pre-straightening machine for straightening, in particular, the beginning and end of rolled metal strips or sheet metal strips
EP2177292A1 (en) * 2008-10-17 2010-04-21 Dimeco Alipresse S.A.S. Device for straightening and feeding a semi-rigid band of material into a machine
FR2937267A1 (en) * 2008-10-17 2010-04-23 Dimeco Alipresse DEVICE FOR RECOVERING AND MAINTAINING A BAND OF SEMI-RIGID MATERIAL IN A MACHINE
CN102950171A (en) * 2012-11-19 2013-03-06 无锡九条龙汽车设备有限公司 Upper straightening roll device
WO2014128614A1 (en) 2013-02-19 2014-08-28 F.I.M.I. - Fabbrica Impianti Macchine Industriali - S.P.A. Roll leveller for metal sheets and a process for levelling a metal sheet with it
US9901967B2 (en) 2013-02-19 2018-02-27 F.I.M.I.—Fabbrica Impianti Macchine Industriali—S.P.A. Roll leveller for metal sheets and a process for levelling a metal sheet with it
CN106077159A (en) * 2016-08-26 2016-11-09 刘书雄 A kind of industry steel plate gag press
CN106077159B (en) * 2016-08-26 2018-08-28 杭州宝伟汽车零部件有限公司 A kind of industry steel plate gag press

Also Published As

Publication number Publication date
EP0060965B1 (en) 1986-01-02
AT368411B (en) 1982-10-11
DE3173398D1 (en) 1986-02-13
EP0060965A3 (en) 1983-06-22
ATA134381A (en) 1982-02-15

Similar Documents

Publication Publication Date Title
EP2424689B1 (en) Device for compensating variations in the tension of a material strang being fed and/or for adjusting said tension
EP0060965A2 (en) Apparatus for straightening sheet metal
DE3042383C2 (en)
EP0731040B1 (en) Articulated belt conveyor with defined tension of the support means
DE3536554C2 (en) Sliding gate
DE2205354C3 (en) Device for dividing a semiconductor wafer
DE102009012929B3 (en) Straightening roller system for leveling metallic goods e.g. metal strip, has straightening machine provided with straightening roller cartridge, and supporting rollers connected to straightening roller sets, which are adjustable
DE2937293C2 (en) Rope pressing device for rope sheaves
CH659215A5 (en) BOOK BLOCK PLIERS.
EP2634822A1 (en) Device for fixing the position of a solder connector to a solar cell
DE2828207A1 (en) METHOD AND APPARATUS FOR FORMING ENDLESS METAL BELTS FROM BLANKS OF TUBULAR MATERIAL
DE4418975C1 (en) Feed mechanism for longitudinal wires with two-sided drive
DE2137706B2 (en) Device for laterally guiding a web of material for both directions
DE3400608C2 (en) Roll stand with an offset intermediate roll inserted between the work roll and the back-up roll
DE3803549C2 (en)
DE2817900C2 (en) Device for straightening lateral deflections of continuously fed flat rolled material
EP0015358B1 (en) Feeding device for a strip processing apparatus
DE19857669C2 (en) Mechanical arrangement to limit the movement of work platforms
DE3022691A1 (en) Radiussing sharp edges of strip material - uses profilated rollers pressurised at right angles to and parallel to plane of strip
DE2638628B1 (en) SLED DRAWING MACHINE FOR UNIFORM DRAWING AND LENGTH CUTTING OF LONG DRAWING MATERIAL
DE4028831C2 (en)
DE1458989C (en) Sealing for a furnace for the continuous heat treatment of metal strips
DE3024427A1 (en) Sharp edge rounding-off device for strips - has shaped circumference roller sets pressure-loaded in two perpendicular directions
EP0685277B1 (en) Feeding apparatus with double sided drive for longitudinal wires
DE1584241B1 (en) Weight compensation device for a door leaf that can be pivoted overhead into an open position close to the ceiling

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

17P Request for examination filed

Effective date: 19830729

ITF It: translation for a ep patent filed

Owner name: STUDIO INGG. FISCHETTI & WEBER

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

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

REF Corresponds to:

Ref document number: 3173398

Country of ref document: DE

Date of ref document: 19860213

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

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

Effective date: 19861031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19890914

Year of fee payment: 9

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

Ref country code: SE

Payment date: 19890918

Year of fee payment: 9

Ref country code: DE

Payment date: 19890918

Year of fee payment: 9

Ref country code: CH

Payment date: 19890918

Year of fee payment: 9

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

Ref country code: BE

Payment date: 19890919

Year of fee payment: 9

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

Ref country code: LU

Payment date: 19890920

Year of fee payment: 9

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

Ref country code: GB

Payment date: 19890930

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19891031

Year of fee payment: 9

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

Ref country code: GB

Effective date: 19901023

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

Ref country code: SE

Effective date: 19901024

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

Ref country code: LI

Effective date: 19901031

Ref country code: CH

Effective date: 19901031

Ref country code: BE

Effective date: 19901031

BERE Be: lapsed

Owner name: VOEST-ALPINE A.G.

Effective date: 19901031

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

Ref country code: NL

Effective date: 19910501

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910628

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19910702

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 81890180.3

Effective date: 19910603