EP1778420B1 - Rolling plant and method for generating a metal strip - Google Patents

Rolling plant and method for generating a metal strip Download PDF

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Publication number
EP1778420B1
EP1778420B1 EP06762593A EP06762593A EP1778420B1 EP 1778420 B1 EP1778420 B1 EP 1778420B1 EP 06762593 A EP06762593 A EP 06762593A EP 06762593 A EP06762593 A EP 06762593A EP 1778420 B1 EP1778420 B1 EP 1778420B1
Authority
EP
European Patent Office
Prior art keywords
rolling
metal strip
thickness
winding sleeve
winding
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.)
Not-in-force
Application number
EP06762593A
Other languages
German (de)
French (fr)
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EP1778420A1 (en
Inventor
Martin Peter
Ulrich Patzelt
Hans-Peter Richter
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.)
SMS Siemag AG
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SMS Demag AG
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Publication date
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Publication of EP1778420A1 publication Critical patent/EP1778420A1/en
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Publication of EP1778420B1 publication Critical patent/EP1778420B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
    • B21C47/045—Winding-up or coiling on or in reels or drums, without using a moving guide in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/16—Unwinding or uncoiling
    • B21C47/18—Unwinding or uncoiling from reels or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture

Definitions

  • the invention relates to a rolling mill and a method for producing a metal strip, wherein the rolling mill has a reversing mill for rolling the metal strip and at least one Reversierphaseusel assigned to the reversing stand for temporarily storing the metal strip between individual rolling operations.
  • a method according to the preamble of claim 9 is for example from the DE-U-8711281 known.
  • reels are for winding and unwinding of metal strip, for example, from EP 0 082 326 basically known.
  • the reel disclosed there has a driven winding mandrel which is surrounded by a spreadable drum for winding and unwinding of band-shaped material.
  • German Offenlegungsschrift DE 1 752 241 discloses an application for such reels in connection with rolling mills. It is described there that the rolling plants is typically a coiler upstream and / or downstream to rolling metal bands during or to roll up after individual rolling operations and temporarily store them in order to release them later by processing.
  • a rolling plant in particular a reversing stand in a rolling mill, reels with not only one, but with two coiler mandrels, each with different diameters upstream or downstream.
  • Initially thick metal bands are first wound on large diameter reel domes to avoid the risk of cracking during bending. If the thickness of the metal bands has then been reduced after a few rolling operations, they are preferably wound on smaller diameter reel mandrels to achieve a higher coil weight with the same dimensions.
  • the reels then each require a reel gear and a circuit to couple in accordance with the thickness of each currently rolled metal strip each suitable due to its diameter coiler mandrel with a drive motor.
  • Such reel gears which are designed to drive at least two spatially separated Haspeldomen are larger, more complex and thus more expensive than a reel drive for controlling only one coiler mandrel. Furthermore, transfer devices are required in order to transport the rolled metal strip from and to a reeling device located farther away from the reversing stand.
  • the invention has the object, a known rolling mill with a Reversiergerüst and a Reversierhaspel overlooked and a known method for operating the rolling mill to the effect that handling, especially a winding of metal strips whose thickness is strong during the rolling process changes, even without the risk of cracking with a Reversierschaspel overlooked with only one coiler mandrel is possible.
  • a rolling mill has a winding tube changing device for Sliding a winding tube on the reel dome before an intermediate securing of the metal strip and for removing the winding tube from the reel mandrel between two subsequent rolling operations when the thickness of the metal strip determined by the sensor device is still greater than the desired thickness, but already smaller than a predetermined thickness threshold value.
  • the claimed changing device allows for quick assembly and disassembly of a winding tube on a single reel mandrel of a Reversierschaspel founded as needed. More specifically, the winding tube changing device allows the winding tube to be pushed on before a first rolling operation in order to provide an increased diameter for winding up the metal strip when the metal strip to be rolled is still relatively thick. Due to the increased diameter and larger metal strips can be wound without them, even if they are made of hard or brittle materials, a risk of cracking.
  • the winding tube changing device advantageously allows removal of the winding tube from the coiler mandrel between two rolling operations, although the thickness of the metal strip to be rolled even greater than a desired thickness, but already so thin that winding to a reduced diameter without risk of cracking is possible.
  • a thickness is represented by a predetermined thickness threshold.
  • the metal strip is preferably wound directly onto the reel mandrel, which has a smaller diameter than the winding tube, because in this way - with the same outer diameter - a higher coil weight compared to a winding on the winding tube can be.
  • the claimed use of the winding tube during operation of the rolling mill with Reversiergerüst advantageously allows the use of only one Reversierhaspel adopted with a simple reel gear for controlling only one reel dome.
  • the investment costs and the maintenance and repair costs are at the reel device with only one Haspeldom significantly lower than if the reel device would have a second coiler mandrel with a second drive shaft and a correspondingly complex constructed reel gear.
  • the claimed winding tube changing device advantageously allows greater flexibility in the use of materials to larger strip thicknesses.
  • the claimed exchange sleeve device advantageously offers the possibility now without much additional effort thicker metal bands gentle to materials without risk of cracking wrap.
  • the winding tube changing device offers advantages not only in the modernization of existing rolling mills, but also in the planning of new rolling mills. Thus, it is advantageously no longer absolutely necessary that it must be determined already in the design of the rolling mill, whether later even thicker metal strips should be used as a starting material or not.
  • the claimed winding tube changing device can, if space is available, be retrofitted at any time later and then also allows the use of thicker metal strips as a starting material.
  • the winding tube is a removable part; this allows a provision of winding tubes with different Wickel barnmessem to select depending on the thickness of the starting material used a winding tube with a correspondingly suitable diameter can.
  • the winding tube has a clamping device for clamping one end of the metal strip at the beginning of a winding process.
  • the clamping device can be adapted to different thicknesses of the metal strip to be clamped.
  • the winding sleeve device advantageously has a telescopic device for coaxial displacement of the winding tube from an intermediate position on the reel mandrel or of the reel mandrel in the intermediate position.
  • the winding tube changing device further comprises a pivoting device for pivoting the winding tube from an initial position to the intermediate position.
  • the above object of the invention is further achieved by a method for producing a metal strip by means of a rolling mill.
  • the advantages of this method correspond to the advantages mentioned above with respect to the claimed rolling mill.
  • Fig. 1 shows a rolling mill 100 according to the invention.
  • the rolling mill is used to produce a metal strip 200.
  • the rolling mill has a reversing stand 110 for rolling the metal strip in several rolling operations until the metal strip has reached a desired thickness.
  • the rolling direction reverses during each rolling process.
  • the rolling mill 100 has a sensor device 120.
  • the rolling mill can also have a second reversing reel device 130 ', wherein the two reeling devices 130, 130' are then typically mutually alternating Cache the metal strip between individual rolling operations.
  • the rolling mill 100 moreover has a winding tube changing device 140, 140 'associated with the reversing reels 130, 130'.
  • This winding tube changing devices are used according to the invention for pushing a winding tube 134 (see Fig. 2 ) on the reel mandrels 132, 132 'before a first intermediate storage of the metal strip and for removing the winding tube from the reel mandrels 130, 130' between two rolling operations, if the thickness of the metal strip determined by the sensor device 120 still greater than a desired thickness, but already smaller is a predetermined thickness threshold.
  • the diameter of the winding tube is typically in a range of 800-1200 mm.
  • Fig. 2 shows a winding sleeve 134 formed according to the invention, as it is pushed onto the reel mandrels 132, 132 'when needed and clamped there. It serves to increase the minimum winding diameter and thus allows the winding of hard and brittle materials with relatively large thickness, without causing a risk of cracking in these materials or these metal bands.
  • the winding tube has a clamping device 134a, for example in the form of a clamping slot for clamping one end of the metal strip at the beginning of a winding process.
  • the clamping device 134a may be designed for manual or hydraulic actuation. Preferably, it is designed to receive metal strips with different thicknesses.
  • Fig. 3 illustrates the structure and thejanswiese the winding tube changing device 140 or 140 'according to the invention.
  • the two devices 140, 140 ' are basically the same, which is why - for the sake of simplicity - only the reference numeral 140 is used below.
  • the winding tube changing device 140 has as a first part a telescopic device 142 for coaxially displacing the winding tube 134 from an intermediate position Z on the reel mandrel 132 or from the reel mandrel back to the intermediate position Z.
  • the telescopic device 142 has a rail 142-I, at which the winding tube 134 is releasably attached.
  • the rail 142-I is slidably mounted with respect to the reel mandrel 132 and thus allows a coaxial pushing or removing the winding tube on or from the coiler mandrel 132nd
  • Fig. 3 shows the rail 142-I in two different shift states a) and b).
  • the rail is shown spatially offset in the two states a) and b).
  • Condition a) shows the rail 142-I opposite the reel mandrel 132 in an extended condition a) abutting against a stop 144; the winding tube 134 is then positioned coaxially outside the coiler mandrel 132 in position Z.
  • the state b) symbolizes a retracted state of the rail 142-I, which symbolizes the position of the rail when the winding mandrel 132 is pushed onto the reel mandrel 132.
  • the reel drum 132 is rotated by a drive unit or a motor 136 for winding or unwinding of the metal strip 200 in rotation.
  • Fig. 3 describes the telescopic device 142 and its operation for moving the winding tube from the intermediate position Z out illustrated Fig. 4
  • the pivoting device 146 is used to pivot the winding tube 134 from an initial position A to the intermediate position Z.
  • the pivoting device 146 has a fixed stand 146-I on a support arm 146-II is pivotally mounted. On the support arm 146-II, the winding tube 134 is releasably attached.
  • the winding tube changing device 140 serves to push the winding tube 134 onto the coiler mandrel 132 before a first intermediate storage of the metal strip after a rolling process is required.
  • the winding tube then allows due to their large diameter, a winding of the still thick metal strip without risk of cracking.
  • the winding tube 134 remains according to the invention as long as pushed onto the reel mandrel 132 until the thickness of the metal strip 200 has fallen below a predetermined thickness threshold after various rolling operations. Then, the winding tube 134 is either replaced by a smaller winding tube with a smaller diameter, or the metal strip 200 is wound directly onto the reel mandrel 132. If the smaller winding tube is used, this can, as soon as a second thickness threshold value, which is smaller than the first thickness threshold value, but still greater than the desired thickness, again be replaced directly by an even smaller winding tube or the coiler mandrel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Control Of Metal Rolling (AREA)
  • Winding Of Webs (AREA)
  • Continuous Casting (AREA)

Abstract

The invention relates to a rolling plant (100) and to a method for its operation. Known rolling plants (100) typically comprise a reversing stand (110) for rolling a metal strip (200) in a plurality of rolling operations until the metal strip has reached the desired thickness. The reversing stand (110) is typically assigned at least one reversing reel device (130), which has a reel mandrel (132), for temporarily storing the metal strip (200) after individual rolling operations. The known rolling plants (100) also have a sensor device for determining the thickness of the metal strip. In order to cost-effectively achieve high flexibility in the use of primary materials of different strip thicknesses, it is proposed according to the invention that the rolling plant has a winding sleeve exchange device (140) for placing a winding sleeve (134)onto the reel mandrel (132) before the metal strip (200) is temporarily stored and for removing the winding sleeve from the reel mandrel between two rolling operations when the thickness of the metal strip determined by the sensor device (120) is still greater than the desired thickness but is already lower than a predetermined thickness threshold value.

Description

Die Erfindung betrifft eine Walzanlage und ein Verfahren zum Erzeugen eines Metallbandes, wobei die Walzanlage ein Reversiergerüst zum Walzen des Metallbandes und mindestens eine dem Reversiergerüst zugeordnete Reversierhaspeleinrichtung zum Zwischenspeichern des Metallbandes zwischen einzelnen Walzvorgängen aufweist. Ein Verfahren gemäß dem Oberbegriff des Anspruchs 9 ist z.B. aus der DE-U-8711281 bekannt.The invention relates to a rolling mill and a method for producing a metal strip, wherein the rolling mill has a reversing mill for rolling the metal strip and at least one Reversierhäusel assigned to the reversing stand for temporarily storing the metal strip between individual rolling operations. A method according to the preamble of claim 9 is for example from the DE-U-8711281 known.

Im Stand der Technik sind Haspeleinrichtungen zum Auf- und Abwickeln von Metallband zum Beispiel aus der EP 0 082 326 grundsätzlich bekannt. Die dort offenbarte Haspeleinrichtung weist einen angetriebenen Wickeldorn auf, der von einer spreizbaren Trommel zum Auf- und Abwickeln von bandförmigem Material umgeben ist.In the prior art reels are for winding and unwinding of metal strip, for example, from EP 0 082 326 basically known. The reel disclosed there has a driven winding mandrel which is surrounded by a spreadable drum for winding and unwinding of band-shaped material.

Weiterhin ist aus der internationalen Patentanmeldung WO 03/022478 A1 eine Wickelhülse bekannt, welche auf einen spreizbaren Haspeldom aufschiebbar ist. Während des Aufschiebens der Wickelhülse ist der Haspeldom nicht gespreizt; er weist dann lediglich einen minimalen Durchmesser auf. Nach dem Aufschieben der Hülse wird der Haspeldom gespreizt, so dass die aufgeschobene Hülse auf dem gespreizten Haspeldorn festsitzt beziehungsweise klemmt. Zur Demontage der Wickelhülse wird der Dom wieder in seinem Durchmesser verringert, so dass die Hülse abgenommen werden kann. Durch das Aufschieben der Wickelhülse auf den spreizbaren Haspeldom wird eine Vergrößerung von dessen Durchmesser bewirkt.Furthermore, from the international patent application WO 03/022478 A1 a winding tube known, which is pushed onto an expandable coiler mandrel. During the sliding of the winding tube of the coiler mandrel is not spread; he then has only a minimum diameter. After sliding the sleeve of the reel mandrel is spread, so that the deferred sleeve is stuck or clamped on the spread coiler mandrel. To disassemble the winding tube of the dome is reduced again in its diameter, so that the sleeve can be removed. By pushing the winding tube on the expandable coiler mandrel an enlargement of the diameter is effected.

Die deutsche Offenlegungsschrift DE 1 752 241 offenbart schließlich eine Anwendung für derartige Haspeleinrichtungen in Verbindungen mit Walzanlagen. Es ist dort beschrieben, dass den Walzanlagen typischerweise eine Haspeleinrichtung vor- und/oder nachgeschaltet ist, um zu walzende Metallbänder während oder nach einzelnen Walzvorgängen aufzurollen und zwischenzuspeichem, um sie später wieder durch Abwicklung freizugeben.The German Offenlegungsschrift DE 1 752 241 finally, discloses an application for such reels in connection with rolling mills. It is described there that the rolling plants is typically a coiler upstream and / or downstream to rolling metal bands during or to roll up after individual rolling operations and temporarily store them in order to release them later by processing.

Schließlich ist es im Stand der Technik bekannt, dass einer Walzanlage, insbesondere einem Reversiergerüst in einer Walzanlage, Haspeleinrichtungen mit nicht nur einem, sondern mit zwei Haspeldomen mit jeweils unterschiedlichem Durchmesser vor- oder nachgeschaltet sind. Anfänglich dicke Metallbänder werden zunächst auf Haspeldome mit großem Durchmesser aufgewickelt, um die Gefahr einer Rissbildung beim Verbiegen zu vermeiden. Wenn die Dicke der Metallbänder dann nach einigen Walzvorgängen reduziert wurde, werden sie bevorzugt auf Haspeldorne mit kleinerem Durchmesser aufgewickelt, um ein höheres Bundgewicht bei gleichen Abmessungen zu erzielen. Die Haspeleinrichtungen benötigen dann jeweils ein Haspelgetriebe und eine Schaltung, um nach Maßgabe der Dicke eines jeweils aktuell gewalzten Metallbandes den jeweils aufgrund seines Durchmessers geeigneten Haspeldom mit einem Antriebsmotor zu kuppeln. Derartige Haspelgetriebe, die für den Antrieb von mindestens zwei räumlich getrennten Haspeldomen ausgebildet sind, sind größer, aufwändiger und somit teurer als ein Haspelgetriebe zur Ansteuerung von nur einem Haspeldorn. Weiterhin sind Überleiteinrichtungen erforderlich, um das gewalzte Metallband von und zu einer von dem Reversiergerüst weiter entfernt stehenden Haspeleinrichtung zu transportieren.Finally, it is known in the prior art that a rolling plant, in particular a reversing stand in a rolling mill, reels with not only one, but with two coiler mandrels, each with different diameters upstream or downstream. Initially thick metal bands are first wound on large diameter reel domes to avoid the risk of cracking during bending. If the thickness of the metal bands has then been reduced after a few rolling operations, they are preferably wound on smaller diameter reel mandrels to achieve a higher coil weight with the same dimensions. The reels then each require a reel gear and a circuit to couple in accordance with the thickness of each currently rolled metal strip each suitable due to its diameter coiler mandrel with a drive motor. Such reel gears, which are designed to drive at least two spatially separated Haspeldomen are larger, more complex and thus more expensive than a reel drive for controlling only one coiler mandrel. Furthermore, transfer devices are required in order to transport the rolled metal strip from and to a reeling device located farther away from the reversing stand.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine bekannte Walzanlage mit einem Reversiergerüst und einer Reversierhaspeleinrichtung sowie ein bekanntes Verfahren zum Betrieb der Walzanlage dahingehend weiterzubilden, dass eine Handhabung, insbesondere ein Aufwickeln von Metallbändern, deren Dicke sich während des Walzvorganges stark ändert, auch ohne die Gefahr einer Rissbildung mit einer Reversierhaspeleinrichtung mit nur einem Haspeldom möglich ist.Based on this prior art, the invention has the object, a known rolling mill with a Reversiergerüst and a Reversierhaspeleinrichtung and a known method for operating the rolling mill to the effect that handling, especially a winding of metal strips whose thickness is strong during the rolling process changes, even without the risk of cracking with a Reversierschaspeleinrichtung with only one coiler mandrel is possible.

Diese Aufgabe wird durch den Gegenstand des Patentanspruchs 1 gelöst. Demnach weist eine Walzanlage eine Wickelhülsenwechseleinrichtung auf zum Aufschieben einer Wickelhülse auf den Haspeldom vor einer Zwischensicherung des Metallbandes und zum Entfernen der Wickelhülse von dem Haspeldom zwischen zwei späteren Walzvorgängen, wenn die von der Sensoreinrichtung ermittelte Dicke des Metallbandes noch größer als die gewünschte Dicke, aber bereits kleiner als ein vorbestimmter Dickenschwellenwert ist.This object is solved by the subject matter of patent claim 1. Accordingly, a rolling mill has a winding tube changing device for Sliding a winding tube on the reel dome before an intermediate securing of the metal strip and for removing the winding tube from the reel mandrel between two subsequent rolling operations when the thickness of the metal strip determined by the sensor device is still greater than the desired thickness, but already smaller than a predetermined thickness threshold value.

Die beanspruchte Wechseleinrichtung ermöglicht eine schnelle Montage und Demontage einer Wickelhülse auf einem einzigen Haspeldom einer Reversierhaspeleinrichtung je nach Bedarf. Genauer gesagt ermöglicht die Wickelhülsenwechseleinrichtung ein Aufschieben der Wickelhülse vor einem ersten Walzvorgang, um dann, wenn das zu walzende Metallband noch relativ dick ist, einen vergrößerten Durchmesser zum Aufwickeln des Metallbandes bereitzustellen. Aufgrund des vergrößerten Durchmessers können auch Metallbänder größerer Dicke aufgewickelt werden, ohne dass es bei diesen, auch wenn sie aus harten oder spröden Materialien gefertigt sind, zu einer Rissgefährdung kommt. Gleichermaßen ermöglicht die Wickelhülsenwechseleinrichtung vorteilhafterweise eine Entfernung der Wickelhülse von dem Haspeldom zwischen zwei Walzvorgängen, wenn die Dicke des zu walzenden Metallbandes zwar noch größer als eine gewünschte Dicke, aber bereits so dünn ist, dass ein Aufwickeln auf einen verkleinerten Durchmesser ohne Rissgefährdung möglich ist. Eine derartige Dicke wird durch einen vorbestimmten Dickenschwellenwert repräsentiert. Sobald die Dicke kleiner ist als der vorbestimmte Dickenschwellenwert, wird das Metallband vorzugsweise direkt auf den Haspeldom, der einen geringeren Durchmesser hat als die Wickelhülse aufgewickelt, weil auf diese Weise - bei gleichem Außendurchmesser - ein höheres Bundgewicht im Vergleich zu einer Aufwicklung auf der Wickelhülse erzielt werden kann.The claimed changing device allows for quick assembly and disassembly of a winding tube on a single reel mandrel of a Reversierschaspeleinrichtung as needed. More specifically, the winding tube changing device allows the winding tube to be pushed on before a first rolling operation in order to provide an increased diameter for winding up the metal strip when the metal strip to be rolled is still relatively thick. Due to the increased diameter and larger metal strips can be wound without them, even if they are made of hard or brittle materials, a risk of cracking. Similarly, the winding tube changing device advantageously allows removal of the winding tube from the coiler mandrel between two rolling operations, although the thickness of the metal strip to be rolled even greater than a desired thickness, but already so thin that winding to a reduced diameter without risk of cracking is possible. Such a thickness is represented by a predetermined thickness threshold. Once the thickness is smaller than the predetermined thickness threshold value, the metal strip is preferably wound directly onto the reel mandrel, which has a smaller diameter than the winding tube, because in this way - with the same outer diameter - a higher coil weight compared to a winding on the winding tube can be.

Die beanspruchte Verwendung der Wickelhülse beim Betrieb der Walzanlage mit Reversiergerüst ermöglicht vorteilhafterweise die Verwendung von lediglich einer Reversierhaspeleinrichtung mit einem einfachen Haspelgetriebe zur Ansteuerung von nur einem Haspeldom. Die Investitionskosten sowie die Wartungs- und Instandhaltungskosten sind bei der Haspeleinrichtung mit nur einem Haspeldom deutlich geringer, als wenn die Haspeleinrichtung einen zweiten Haspeldom mit einer zweiten Antriebswelle und einem entsprechend komplexer aufgebauten Haspelgetriebe aufweisen würde.The claimed use of the winding tube during operation of the rolling mill with Reversiergerüst advantageously allows the use of only one Reversierhaspeleinrichtung with a simple reel gear for controlling only one reel dome. The investment costs and the maintenance and repair costs are at the reel device with only one Haspeldom significantly lower than if the reel device would have a second coiler mandrel with a second drive shaft and a correspondingly complex constructed reel gear.

Die beanspruchte Wickelhülsenwechseleinrichtung ermöglicht vorteilhafterweise eine größere Flexibilität beim Einsatz von Vormaterialien hin zu größeren Banddicken. Gerade bei der Modernisierung von Walzanlagen, die bisher mit Haspeleinrichtungen mit nur einem Haspeldom betrieben wurden und die vorrangig nur für die Handhabung von dünnen Metallbändern ausgelegt waren, bietet die beanspruchte Wechselhülseneinrichtung vorteilhafterweise die Möglichkeit, nun auch ohne großen zusätzlichen Aufwand dickere Metallbänder materialschonend ohne Rissgefährdung zu wickeln.The claimed winding tube changing device advantageously allows greater flexibility in the use of materials to larger strip thicknesses. Especially in the modernization of rolling mills, which were previously operated with reels with only one coiler mandrel and were primarily designed for the handling of thin metal bands, the claimed exchange sleeve device advantageously offers the possibility now without much additional effort thicker metal bands gentle to materials without risk of cracking wrap.

Schließlich bietet die Wickelhülsenwechseleinrichtung jedoch nicht nur bei der Modernisierung von bestehenden Walzanlagen, sondern auch bei der Planung von neuen Walzanlagen Vorteile. So ist es vorteilhafterweise nicht mehr zwingend erforderlich, dass bereits bei der Auslegung der Walzanlage festgelegt werden muss, ob später einmal auch dickere Metallbänder als Vormaterial eingesetzt werden sollen oder nicht. Die beanspruchte Wickelhülsenwechseleinrichtung kann, sofern Platz vorhanden ist, später jederzeit nachgerüstet werden und ermöglicht dann auch die Verwendung von dickeren Metallbändern als Vormaterial.Finally, the winding tube changing device offers advantages not only in the modernization of existing rolling mills, but also in the planning of new rolling mills. Thus, it is advantageously no longer absolutely necessary that it must be determined already in the design of the rolling mill, whether later even thicker metal strips should be used as a starting material or not. The claimed winding tube changing device can, if space is available, be retrofitted at any time later and then also allows the use of thicker metal strips as a starting material.

Die Wickelhülse ist ein Wechselteil; dies ermöglicht eine Bereitstellung von Wickelhülsen mit unterschiedlichen Wickeldurchmessem, um je nach Dicke des verwendeten Vormaterials eine Wickelhülse mit entsprechend geeignetem Durchmesser auswählen zu können.The winding tube is a removable part; this allows a provision of winding tubes with different Wickeldurchmessem to select depending on the thickness of the starting material used a winding tube with a correspondingly suitable diameter can.

Vorteilhafterweise weist die Wickelhülse eine Klemmeinrichtung auf zum Festklemmen eines Endes des Metallbandes zu Beginn eines Aufwickelvorganges. Vorteilhafterweise kann die Klemmeinrichtung an unterschiedliche Dicken des einzuklemmenden Metallbandes angepasst werden.Advantageously, the winding tube has a clamping device for clamping one end of the metal strip at the beginning of a winding process. Advantageously, the clamping device can be adapted to different thicknesses of the metal strip to be clamped.

Die Wickelhülseneinrichtung weist vorteilhafterweise eine Teleskopeinrichtung auf zum koaxialen Verschieben der Wickelhülse aus einer Zwischenposition auf den Haspeldorn oder von dem Haspeldom in die Zwischenposition.The winding sleeve device advantageously has a telescopic device for coaxial displacement of the winding tube from an intermediate position on the reel mandrel or of the reel mandrel in the intermediate position.

Vorteilhafterweise weist die Wickelhülsenwechseleinrichtung weiterhin eine Schwenkeinrichtung auf zum Schwenken der Wickelhülse von einer Anfangsposition in die Zwischenposition.Advantageously, the winding tube changing device further comprises a pivoting device for pivoting the winding tube from an initial position to the intermediate position.

Die oben genannte Aufgabe der Erfindung wird weiterhin durch ein Verfahren zum Erzeugen eines Metallbandes mithilfe einer Walzanlage gelöst. Die Vorteile dieses Verfahrens entsprechen den oben mit Bezug auf die beanspruchte Walzanlage genannten Vorteilen.The above object of the invention is further achieved by a method for producing a metal strip by means of a rolling mill. The advantages of this method correspond to the advantages mentioned above with respect to the claimed rolling mill.

Weitere vorteilhafte Ausgestaltungen der Walzanlage und des Verfahrens sind Gegenstand der Unteransprüche.Further advantageous embodiments of the rolling mill and of the method are the subject of the dependent claims.

Der Beschreibung sind insgesamt vier Figuren beigefügt, wobei

Fig. 1
eine Walzanlage;
Fig. 2
eine erfindungsgemäße Wickelhülse;
Fig. 3
eine Teleskopeinrichtung als Teil einer erfindungsgemäßen Wickelhülsenwechseleinrichtung; und
Fig. 4
eine Schwenkeinrichtung als weiterer Teil der erfindungsgemäßen Wickelhülsenwechseleinrichtung;
zeigt.The description is a total of four figures attached, wherein
Fig. 1
a rolling mill;
Fig. 2
a winding tube according to the invention;
Fig. 3
a telescopic device as part of a winding tube changing device according to the invention; and
Fig. 4
a pivoting device as a further part of the winding tube changing device according to the invention;
shows.

Die Erfindung wird nachfolgend in Form von Ausführungsbeispielen unter Bezugnahme auf die genannten Figuren detailliert beschrieben.The invention will now be described in detail in the form of embodiments with reference to said figures.

Fig. 1 zeigt eine Walzanlage 100 gemäß der Erfindung. Die Walzanlage dient zum Erzeugen eines Metallbandes 200. Zu diesem Zweck weist die Walzanlage ein Reversiergerüst 110 auf zum Walzen des Metallbandes in mehreren Walzvorgängen solange, bis das Metallband eine gewünschte Dicke erreicht hat. Bei dem Reversiergerüst kehrt sich die Walzrichtung bei jedem Walzvorgang um. Zur Ermittlung der Dicke des Metallbandes 200, vorzugsweise nach jedem Walzvorgang, weist die Walzanlage 100 eine Sensoreinrichtung 120 auf. Darüber hinaus weist die Walzanlage eine dem Reversiergerüst 110 zugeordnete Reversierhaspeleinrichtung 130 auf mit einem Haspeldom 132. Je nach Ausbildung der Walzanlage und insbesondere des Reversiergerüstes 110 kann die Walzanlage auch eine zweite Reversierhaspeleinrichtung 130' aufweisen, wobei die beiden Haspeleinrichtungen 130, 130' dann typischerweise wechselseitig das Metallband zwischen einzelnen Walzvorgängen zwischenspeichern. Fig. 1 shows a rolling mill 100 according to the invention. The rolling mill is used to produce a metal strip 200. For this purpose, the rolling mill has a reversing stand 110 for rolling the metal strip in several rolling operations until the metal strip has reached a desired thickness. In the reversing stand, the rolling direction reverses during each rolling process. For determining the thickness of the metal strip 200, preferably after each rolling operation, the rolling mill 100 has a sensor device 120. Depending on the design of the rolling plant and in particular of the reversing stand 110, the rolling mill can also have a second reversing reel device 130 ', wherein the two reeling devices 130, 130' are then typically mutually alternating Cache the metal strip between individual rolling operations.

Erfindungsgemäß weist die Walzanlage 100 darüber hinaus eine den Reversierhaspeleinrichtungen 130, 130' jeweils zugeordnete Wickelhülsenwechseleinrichtung 140, 140' auf. Diese Wickelhülsenwechseleinrichtungen dienen erfindungsgemäß zum Aufschieben einer Wickelhülse 134 (siehe Fig. 2) auf die Haspeldorne 132, 132' vor einer ersten Zwischenspeicherung des Metallbandes und zum Entfernen der Wickelhülse von den Haspeldomen 130, 130' zwischen zwei Walzvorgängen, wenn die von der Sensoreinrichtung 120 ermittelte Dicke des Metallbandes noch größer als eine gewünschte Dicke, aber bereits kleiner als ein vorbestimmter Dickenschwellenwert ist. Der Durchmesser der Wickelhülse liegt typischerweise in einem Bereich von 800-1200 mm.According to the invention, the rolling mill 100 moreover has a winding tube changing device 140, 140 'associated with the reversing reels 130, 130'. This winding tube changing devices are used according to the invention for pushing a winding tube 134 (see Fig. 2 ) on the reel mandrels 132, 132 'before a first intermediate storage of the metal strip and for removing the winding tube from the reel mandrels 130, 130' between two rolling operations, if the thickness of the metal strip determined by the sensor device 120 still greater than a desired thickness, but already smaller is a predetermined thickness threshold. The diameter of the winding tube is typically in a range of 800-1200 mm.

Fig. 2 zeigt eine erfindungsgemäß ausgebildete Wickelhülse 134, wie sie bei Bedarf auf die Haspeldome 132, 132' aufgeschoben und dort festgeklemmt wird. Sie dient zur Vergrößerung des minimalen Wickeldurchmessers und ermöglicht auf diese Weise auch das Aufwickeln von harten und spröden Materialien mit relativ großer Dicke, ohne dass es zu einer Rissgefährdung bei diesen Materialien beziehungsweise diesen Metallbändern kommt. Die Wickelhülse weist eine Klemmeinrichtung 134a beispielhaft in Form eines Klemmschlitzes auf zum Festklemmen eines Endes des Metallbandes zu Beginn eines Aufwickelvorganges. Die Klemmeinrichtung 134a kann für eine manuelle oder eine hydraulische Betätigung ausgebildet sein. Vorzugsweise ist sie zur Aufnahme von Metallbändern mit unterschiedlichen Dicken ausgebildet. Fig. 2 shows a winding sleeve 134 formed according to the invention, as it is pushed onto the reel mandrels 132, 132 'when needed and clamped there. It serves to increase the minimum winding diameter and thus allows the winding of hard and brittle materials with relatively large thickness, without causing a risk of cracking in these materials or these metal bands. The winding tube has a clamping device 134a, for example in the form of a clamping slot for clamping one end of the metal strip at the beginning of a winding process. The clamping device 134a may be designed for manual or hydraulic actuation. Preferably, it is designed to receive metal strips with different thicknesses.

Fig. 3 veranschaulicht den Aufbau und die Funktionswiese der erfindungsgemäßen Wickelhülsenwechseleinrichtung 140 oder 140'. Die beiden Einrichtungen 140, 140' sind grundsätzlich gleich ausgebildet, weshalb nachfolgend - der Einfachheit halber - lediglich das Bezugszeichen 140 verwendet wird. Die Wickelhülsenwechseleinrichtung 140 weist als ersten Teil eine Teleskopeinrichtung 142 auf zum koaxialen Verschieben der Wickelhülse 134 aus einer Zwischenposition Z auf den Haspeldom 132 oder von dem Haspeldom zurück in die Zwischenposition Z. Die Teleskopeinrichtung 142 weist eine Schiene 142-I auf, an welcher die Wickelhülse 134 lösbar befestigt ist. Die Schiene 142-I ist in Bezug auf den Haspeldom 132 verschiebbar gelagert und ermöglicht so ein koaxiales Aufschieben oder Entfernen der Wickelhülse auf beziehungsweise von dem Haspeldom 132. Fig. 3 illustrates the structure and the Funktionswiese the winding tube changing device 140 or 140 'according to the invention. The two devices 140, 140 'are basically the same, which is why - for the sake of simplicity - only the reference numeral 140 is used below. The winding tube changing device 140 has as a first part a telescopic device 142 for coaxially displacing the winding tube 134 from an intermediate position Z on the reel mandrel 132 or from the reel mandrel back to the intermediate position Z. The telescopic device 142 has a rail 142-I, at which the winding tube 134 is releasably attached. The rail 142-I is slidably mounted with respect to the reel mandrel 132 and thus allows a coaxial pushing or removing the winding tube on or from the coiler mandrel 132nd

Fig. 3 zeigt die Schiene 142-I in zwei verschiedenen Verschiebe-Zuständen a) und b). Um die beiden Zustände der Schiene, die sich grundsätzlich nur translatorisch in einer Richtung bewegt, grafisch veranschaulichen zu können, ist die Schiene in den beiden Zuständen a) und b) räumlich versetzt dargestellt. Der Zustand a) zeigt die Schiene 142-I gegenüber dem Haspeldom 132 in einem ausgezogenen Zustand a), wobei sie gegen einen Anschlag 144 anschlägt; die Wickelhülse 134 befindet sich dann in der Position Z koaxial außen vor dem Haspeldom 132 positioniert. Demgegenüber symbolisiert der Zustand b) einen eingefahrenen Zustand der Schiene 142-I, welche die Position der Schiene bei auf den Haspeldom 132 aufgeschobener Wickelhülse 134 symbolisiert. Der Haspeldom 132 wird von einem Antriebsaggregat beziehungsweise einem Motor 136 zum Auf- beziehungsweise Abwickeln des Metallbandes 200 in Drehung versetzt. Fig. 3 shows the rail 142-I in two different shift states a) and b). In order to be able to graphically illustrate the two states of the rail, which in principle only translates in one direction, the rail is shown spatially offset in the two states a) and b). Condition a) shows the rail 142-I opposite the reel mandrel 132 in an extended condition a) abutting against a stop 144; the winding tube 134 is then positioned coaxially outside the coiler mandrel 132 in position Z. In contrast, the state b) symbolizes a retracted state of the rail 142-I, which symbolizes the position of the rail when the winding mandrel 132 is pushed onto the reel mandrel 132. The reel drum 132 is rotated by a drive unit or a motor 136 for winding or unwinding of the metal strip 200 in rotation.

Während Fig. 3 die Teleskopeinrichtung 142 und ihre Funktionsweise zum Verschieben der Wickelhülse aus der Zwischenposition Z heraus beschreibt, veranschaulicht Fig. 4 den Aufbau und die Funktionsweise einer Schwenkeinrichtung 146 als optionalen zweiten Teil der Wickelhülsenwechseleinrichtung 140. Die Schwenkeinrichtung 146 dient zum Schwenken der Wickelhülse 134 von einer Anfangsposition A in die Zwischenposition Z. Zu diesem Zweck weist die Schwenkeinrichtung 146 einen feststehenden Ständer 146-I auf, an dem ein Tragarm 146-II schwenkbar gelagert ist. An dem Tragarm 146-II ist die Wickelhülse 134 lösbar befestigt.While Fig. 3 describes the telescopic device 142 and its operation for moving the winding tube from the intermediate position Z out illustrated Fig. 4 The pivoting device 146 is used to pivot the winding tube 134 from an initial position A to the intermediate position Z. For this purpose, the pivoting device 146 has a fixed stand 146-I on a support arm 146-II is pivotally mounted. On the support arm 146-II, the winding tube 134 is releasably attached.

Erfindungsgemäß dient die Wickelhülsenwechseleinrichtung 140 zum Aufschieben der Wickelhülse 134 auf den Haspeldorn 132, bevor ein erstes Zwischenspeichern des Metallbandes nach einem Walzvorgang erforderlich ist. Die Wickelhülse ermöglicht dann aufgrund ihres großen Durchmessers ein Aufwickeln des noch dicken Metallbandes ohne Rissgefährdung. Die Wickelhülse 134 bleibt erfindungsgemäß solange auf dem Haspeldom 132 aufgeschoben, bis die Dicke des Metallbandes 200 nach diversen Walzvorgängen einen vorbestimmten Dickenschwellenwert unterschritten hat. Dann wird die Wickelhülse 134 entweder durch eine kleinere Wickelhülse mit einem kleineren Durchmesser ersetzt, oder das Metallband 200 wird direkt auf den Haspeldom 132 aufgewickelt. Wird die kleinere Wickelhülse verwendet, so kann diese, sobald ein zweiter Dickenschwellenwert, der kleiner als der erste Dickenschwellenwert, aber noch größer als die gewünschte Dicke ist, wiederum durch eine noch kleinere Wickelhülse oder den Haspeldom direkt ersetzt werden.According to the invention, the winding tube changing device 140 serves to push the winding tube 134 onto the coiler mandrel 132 before a first intermediate storage of the metal strip after a rolling process is required. The winding tube then allows due to their large diameter, a winding of the still thick metal strip without risk of cracking. The winding tube 134 remains according to the invention as long as pushed onto the reel mandrel 132 until the thickness of the metal strip 200 has fallen below a predetermined thickness threshold after various rolling operations. Then, the winding tube 134 is either replaced by a smaller winding tube with a smaller diameter, or the metal strip 200 is wound directly onto the reel mandrel 132. If the smaller winding tube is used, this can, as soon as a second thickness threshold value, which is smaller than the first thickness threshold value, but still greater than the desired thickness, again be replaced directly by an even smaller winding tube or the coiler mandrel.

Claims (11)

  1. Rolling installation (100) for producing a metal strip for carrying out the method according to claim 9, comprising a reversing stand (110) for rolling the metal strip in several rolling processes until the metal strip has attained a desired thickness, wherein the rolling direction (R) is reversed for each rolling process; at least one reversible coiling device (130, 130'), which is associated with the reversing stand (110), with a coiling mandrel (132, 132') for intermediate storage of the metal strip after the individual rolling processes; and a sensor device (120) for ascertaining the thickness of the metal strip preferably after each rolling process; characterised by a winding sleeve change device for pushing a winding sleeve (134, 134') onto the coiling mandrel (132, 132') prior to an intermediate storage of the metal strip and for removal of the winding sleeve (134, 134') from the coiling mandrel (132, 132') between two later rolling processes if the thickness, which is ascertained by the sensor device (120), of the metal strip is still greater than the desired thickness, but already less than a predetermined thickness threshold value.
  2. Rolling installation (100) according to claim 1, characterised in that the diameter of the winding sleeve (134, 134') is adapted or adaptible to, in particular, the initial thickness of the metal strip to be rolled.
  3. Rolling installation (100) according to one of the preceding claims, characterised in that the winding sleeve (134, 134') comprises a clamping device (134a), preferably in the form of a clamping slot, for firmly clamping an end of the metal strip at the beginning of a winding-up process.
  4. Rolling installation (100) according to claim 3, characterised in that the clamping device (134a) is manually or hydraulically actuable.
  5. Rolling installation (100) according to claim 3 or 4, characterised in that the clamping device (134a) is constructed for reception of the metal strip with different thicknesses caused by the rolling processes.
  6. Rolling installation (100) according to one of the preceding claims, characterised in that the winding sleeve change device comprises telescopic equipment (142) for coaxial displacing of the winding sleeve (134, 134') from an intermediate position (Z) on the coiling mandrel (132, 132') or from the coiling mandrel (132, 132') to the intermediate position (Z).
  7. Rolling installation (100) according to claim 6, characterised in that the winding sleeve change device further comprises pivot equipment (146) for pivotation of the winding sleeve (134, 134') from an initial position (A) to the intermediate position (Z).
  8. Rolling installation (100) according to one of the preceding claims, characterised in that the external diameter (D) of the winding sleeve (134, 134') lies in a range of 800 - 1,200 millimetres.
  9. Method of producing a rolling metal strip with the help of a rolling installation (100) with a reversing stand (110) and at least one reversible coiling device (130, 130'), which is associated with the reversing stand (110), with a coiling mandrel (132, 132'), comprising the steps:
    rolling the metal strip in the reversing stand (110) in several rolling processes until the metal strip has attained a desired thickness, wherein the rolling direction (R) is reversed for each rolling process; and
    intermediate storage of the metal strip after a, preferably each, rolling process for winding-up on the reversible coil device (130, 130');
    characterised in that as long as the thickness of the metal strip has still not yet exceeded a predetermined thickness threshold value the metal strip after a, preferably each, rolling process is wound up on a winding sleeve (134, 134'), which is pushed onto the coiling mandrel (132, 132'), and intermediately stored there; and as soon as the thickness of the metal strip has, due to the rolling processes carried out, reached or fallen below the thickness threshold value the empty winding sleeve (134, 134') is removed from the coiling mandrel (132, 132').
  10. Method according to claim 9, characterised in that after removal of the winding sleeve (134, 134') a smaller winding sleeve with a smaller diameter is pushed onto the coiling mandrel (132, 132') and the smaller winding sleeve (134, 134') serves as intermediate store for the metal strip until the thickness thereof due to further rolling processes which have been carried out has fallen below a further thickness threshold value which is smaller than the first thickness threshold value or until the thickness thereof corresponds with the desired thickness.
  11. Method according to claim 9 or 10, characterised in that after removal of the winding sleeve (134, 134') or of the smaller winding sleeve the metal strip is wound up directly on the coiling mandrel (132, 132').
EP06762593A 2005-07-18 2006-07-14 Rolling plant and method for generating a metal strip Not-in-force EP1778420B1 (en)

Applications Claiming Priority (2)

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DE102005034031A DE102005034031A1 (en) 2005-07-18 2005-07-18 Rolling mill and method for producing a metal strip
PCT/EP2006/006910 WO2007009672A1 (en) 2005-07-18 2006-07-14 Rolling plant and method for generating a metal strip

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EP1778420B1 true EP1778420B1 (en) 2008-04-23

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RU2007110221A (en) 2008-09-27
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CN101018624A (en) 2007-08-15
TW200704459A (en) 2007-02-01
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JP2008505767A (en) 2008-02-28
WO2007009672A1 (en) 2007-01-25

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