EP3584016A1 - Wear reduction in coil box rollers - Google Patents

Wear reduction in coil box rollers Download PDF

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Publication number
EP3584016A1
EP3584016A1 EP19179962.6A EP19179962A EP3584016A1 EP 3584016 A1 EP3584016 A1 EP 3584016A1 EP 19179962 A EP19179962 A EP 19179962A EP 3584016 A1 EP3584016 A1 EP 3584016A1
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EP
European Patent Office
Prior art keywords
rollers
wear
winding
strip
account
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
EP19179962.6A
Other languages
German (de)
French (fr)
Other versions
EP3584016B1 (en
Inventor
Bernhard Ehls
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 Group GmbH
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SMS Group GmbH
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Filing date
Publication date
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Publication of EP3584016A1 publication Critical patent/EP3584016A1/en
Application granted granted Critical
Publication of EP3584016B1 publication Critical patent/EP3584016B1/en
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Classifications

    • 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
    • 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
    • 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
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3433—Feeding or guiding devices not specially adapted to a particular type of apparatus for guiding the leading end of the material, e.g. from or to a coiler
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • 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
    • B21C49/00—Devices for temporarily accumulating material
    • 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
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/522—Wear of friction surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/173—Metal

Definitions

  • the invention relates to a device and a method for winding and / or unwinding a strip, preferably for winding a metal strip into a coil in metal processing.
  • the coil box usually has a plurality of bending rollers which bend the tape and in this way bring it into a position suitable for winding up, and winding rollers which usually wind up the tape without a thorn, ie with an open eye.
  • the coil box can also have means for transporting the tape, as well as for moving and unwinding the coil.
  • Such a coil box is for example in the DE 198 03 091 A1 described.
  • the WO 2009/097957 A1 describes a method in which the peripheral speed of the bending rollers is set to the surface speed of the metal strip at the line of contact. This can reduce the slippage between the metal band and the bending rollers, but it does the bending rollers continue to be exposed to different loads - such as different engagement times, angles of attack, compressive forces, etc. - which can result in different wear behavior.
  • An object of the invention is to provide a device and a method for winding and / or unwinding a strip, preferably for winding a metal strip into a coil in metalworking, which improve the wear behavior of rollers, in particular transport, guidance, bending and take-up rolls, optimize.
  • the device is used for winding and / or unwinding a tape.
  • the band is preferably a metal band.
  • the strip can be a metal strip that runs out of a roll stand and is wound up into a bundle by the device.
  • the device has several roles.
  • the rollers are used, for example, to transport, guide, bend, wind and / or unwind the tape and are in contact with it at least temporarily.
  • At least one role, preferably several or all roles, has one or more changeable manipulated variables that can be set by an actuating device.
  • a manipulated variable denotes a changeable physical, preferably mechanical, property of the roller.
  • the speed of rotation of the roller can be a manipulated variable, as can the torque, the position and / or orientation of the roller etc.
  • the manipulated variable can also indirectly describe the condition of the roller, for example, it relates to a variable for controlling a drive of the roller.
  • the rotational speed of the roller for example, is also considered as a possible manipulated variable, as is the motor torque of the drive or the excitation current for actuating the drive.
  • the manipulated variable can identify the position of the roller, the position of the piston in the cylinder or the pressures for actuating the hydraulic cylinder. It is important that one or more manipulated variables can be set by a control unit, which is referred to here as an actuating device.
  • One or more manipulated variables can preferably be set during the regular operation of the device, ie during the winding of a strip.
  • the device also has a wear detection device which is set up to determine a wear state of at least one of the rollers.
  • the state of wear comprises at least one physical property of one or more rollers that changes due to wear during the course of the operation of the device. For example, the contact of a roll with the belt over time can cause a change in profile or a change in the diameter of the roll.
  • different rollers generally wear at different speeds and in different ways, since they are exposed to different loads, for example different engagement times and angles of attack. This problem becomes more pronounced when several rollers are driven by a common drive train.
  • the device preferably has a plurality of driven rollers, each of which has at least one manipulated variable that can be set by the actuating device and is driven by its own drive train.
  • the drive train preferably comprises a drive gear, so that the driven rollers are decoupled, at least with regard to the gear, so that the different wear behavior can be taken into account.
  • the individual Drive trains also have their own motors, such as electric motors, to further optimize wear behavior.
  • the diameter of one or more rollers can be measured continuously or at certain intervals during operation, the change over time of which is used as a determining parameter of the state of wear.
  • the profiles of rolls can be measured or theoretically determined and considered in the state of wear.
  • manipulated variables can be taken into account as well as the strip thickness, strip width, strip temperature, bending force, the strip weight, the strip size, etc. The wear condition determined on an experimental and / or theoretical basis is thus a measure of the wear of one or more rollers.
  • the actuating device is set up in such a way that it changes one or more manipulated variables, taking into account the determined state of wear.
  • the control of one or more rollers for example the setting of rotational speeds and / or the chronological course of the opening of bending rollers and / or the lowering of winding rollers etc., takes place taking into account the determined state of wear.
  • the wear behavior can be optimized in this way.
  • the wear of different rollers can be evened out, which increases their operating time and also reduces maintenance times and times in which the device is at a standstill due to wear.
  • the wear optimization insofar as it includes bending rollers and / or winding rollers, also contributes to an improvement in the collar eye diameter, the ovality of the collar and the collar opening sequence. Production security is reduced the cobbler rate improved.
  • the associated improvement in wear prediction also improves downtime and spare parts planning.
  • the wear behavior can be optimized by readjusting the setting values of the roller drives on the basis of the measured and / or otherwise determined wear on different rollers, for example based on the different engagement times, bandwidths and the loads that occur, as well as the input roller shape, i.e. the original roll shape before the wear-related change, and the roll base material.
  • Another measure, which relates to a preferred embodiment, is to achieve an equalization of the load distribution due to the bandwidth fluctuation by a lateral displacement of the roller.
  • a measure of the lateral position or displacement of the roller is a manipulated variable in the sense defined above, which can be adjusted via the actuating device, taking into account the state of wear.
  • the method according to the invention is used like the device for winding and / or unwinding a strip, preferably for winding a metal strip in metal processing.
  • the device and the method are particularly suitable for optimizing the wear of bending rolls and / or winding rolls in coil boxes. But the invention can also be implemented in other areas, for example to optimize wear on transport rollers, guide rollers, unwinding rollers, etc.
  • FIGS. 1 to 6 schematically show the arrangement of bending and winding rolls of a coil box in the course of winding a metal strip.
  • the Figure 1 shows an arrangement of bending and winding rollers in a coil box for winding a metal strip.
  • the coil box has a group of bending rollers with two upper bending rollers 10a, 10b and a lower bending roller 11.
  • the upper bending roller 10b and the lower bending roller 11 define a bending gap B through which the tape 1 to be wound up (cf. Figure 2 to 6 ) is passed through.
  • the inclination of the upper bending rollers 10a, 10b relative to the lower bending roller 11 can be changed by means of an adjusting cylinder 12.
  • the lower bending roller 11 is designed to be stationary in the present exemplary embodiment, but its position can also be provided so as to be adjustable.
  • the coil box also has two winding rollers 20a, 20b which hold the bundle 2 which is created and growing during winding (cf. Figure 4 to 6 ) carry and store rotatable.
  • the setting of the winding rollers 20a, 20b can be changed by a setting cylinder 22.
  • the positioning cylinders 12, 22 are each designed as hydraulic cylinders in the present example, but there is no restriction in this regard.
  • the rollers can be adjusted in various ways, for example by means of an electric motor or magnetically. Furthermore, the roles can be adjusted in groups or individually.
  • the coil box according to the present example has, for example, a form roller 30 and three contact elements 31a, 31b, 31c, which contribute to a defined winding of the tape 1.
  • the positioning cylinders 12, 22 are controlled by an actuating device 40.
  • the actuating device 40 has a wear detection device 50, which is described in more detail below, or communicates with one.
  • the Figure 2 shows a state of the coil box at the beginning of the winding process.
  • the tape 1 which passes through the bending gap B, is bent during the transport by the bending rollers 10a, 10b, 11 so that it comes into contact with the contact element 31a.
  • the positions and speeds of the bending and winding rollers 10a, 10b, 11, 20a, 20b are controlled by the adjusting device 40, wherein the rolls are brought up to a certain speed with their leading and lagging in relation to the belt speed.
  • the Figure 3 shows a state in which the tape 1 pre-bent by the bending rollers 10a, 10b, 11 has been transported further towards the winding rollers 20a, 20b.
  • the tape 1 begins to wind up without a mandrel and in contact with the take-up reel 20a into a bundle 2, as a comparison with that Figure 4 shows.
  • the actuating device 40 causes the upper bending rollers 10a, 10b to open, ie the positioning cylinder 12 moves one or both upper bending rollers 10a, 10b away from the stationary bending roller 11, as a result of which the bending gap B increases.
  • the direction of the opening of the upper bending rollers 10a, 10b is in the Figure 4 shown by an arrow.
  • the adjusting device 40 causes the winding rollers 20a, 20b to lower in addition to the upper bending rollers 10a, 10b in order to make room for the growing bundle 2. This is also indicated by an arrow from the Figure 5 out.
  • the contact state of the strip 1 changes relative to the bending rollers 10a, 10b, 11.
  • the contact of the strip 1 changes from contact with all three bending rollers 10a, 10b, 11 for contact with only two bending rollers 10b, 11, as in the Figure 6 shown.
  • the change in the contact state is not only a function of time, ie the process stage, but also depends on other parameters, such as the material thickness of the strip 1, the strip temperature and strip strength.
  • the coil box has the wear detection device 50. This is set up to determine a state of wear of one or more of the rollers 10a, 10b, 11, 20a, 20b.
  • the state of wear includes at least one physical property of the roll (s) in question, which changes due to wear during the operation of the coil box. For example, a change in the profile or a change in the diameter of one or more of the bending rollers 10a, 10b, 11 may change into the state of wear.
  • the state of wear can be determined in various ways. In particular, the state of wear can be based on a theoretical wear model and / or taking sensor data into account.
  • the bending rollers 10a, 10b, 11 can be assigned sensors which measure one or more parameters suitable for determining the state of wear - such as the roller diameter, the roller profile, the speed of rotation, etc.
  • the sensors communicate with the wear detection device 50, which in turn determines a wear state from the sensor data and, if necessary, taking into account a theoretical model.
  • the actuating device 40 is now set up in such a way that it changes the manipulated variables taking into account the determined state of wear.
  • the speeds of the bending rollers 10a, 10b, 11 and / or the time course of the opening of the upper bending rollers 10a, 10b can be a function of the state of wear, such as the measured roller diameter.
  • the wear behavior of the rollers can be optimized.
  • the wear of different rolls can be evened out, which increases their operating time, as well as maintenance times and times in which the coil box comes to a standstill due to wear.
  • the wear optimization also contributes to an improvement in the collar eye diameter, the ovality of the collar 2 and the collar opening sequence. Production security is improved by reducing the cobbler rate.
  • a more precise wear forecast is possible, which contributes to an improvement in downtime and spare parts planning.
  • the wear detection device (50) is preferably set up to determine the state of wear taking into account measured values measured by one or more sensors, the measured values preferably comprising one or more variables from the following selection: rotational speed of one or more of the rollers (10a, 10b , 11, 20a, 20b); Torque of one or more of the rollers; Change in rotational speed of one or more of the rollers; Torque change of one or more of the rollers; Profile of one or more of the roles; Changing the profile of one or more of the roles; Diameter of one or more of the rollers; Change in diameter of one or more of the rollers; Location and / or orientation of one or more of the rollers; Strip thickness; bandwidth; Strip temperature; Bending force; Coil weight; Bund size.
  • the manipulated variables that can be set by the adjusting device (40) preferably include one or more variables from the following selection: rotational speed of one or more of the rollers (10a, 10b, 11, 20a, 20b); Torque of one or more of the rollers; Pre- and / or lag factor of one or more of the roles; Location and / or orientation of one or more of the roles.
  • the rollers (10a, 10b, 11, 20a, 20b) preferably comprise a plurality of driven rollers, each of which has at least one manipulated variable that can be set by the actuating device (40) and of its own drive train (in the Figures not shown), which preferably has a drive gear and / or a motor, can be driven.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

Vorrichtung und Verfahren zum Aufwickeln und/oder Abwickeln eines Bandes (1), vorzugsweise zum Aufwickeln eines Metallbandes zu einem Bund (2) in der Metallverarbeitung, wobei die Vorrichtung aufweist: mehrere Rollen (10a, 10b, 11, 20a, 20b), die eingerichtet sind, um zumindest zeitweise mit dem Band (1) in Kontakt zu stehen, wobei zumindest eine der Rollen (10a, 10b, 11, 20a, 20b) eine oder mehrere änderbare Stellgrößen, die von einer Stelleinrichtung (40) einstellbar sind, aufweist; eine Verschleißermittlungseinrichtung (50), die eingerichtet ist, um einen Verschleißzustand zumindest einer der Rollen (10a, 10b, 11, 20a, 20b) zu ermitteln; wobei die Stelleinrichtung (40) eingerichtet ist, um eine oder mehrere der Stellgrößen unter Berücksichtigung des ermittelten Verschleißzustands einzustellen.Device and method for winding and / or unwinding a strip (1), preferably for winding a metal strip into a coil (2) in metal processing, the device comprising: a plurality of rolls (10a, 10b, 11, 20a, 20b) which are set up in order to be in contact with the belt (1) at least temporarily, at least one of the rollers (10a, 10b, 11, 20a, 20b) having one or more changeable manipulated variables which can be set by an actuating device (40) ; a wear detection device (50) which is set up to determine a wear state of at least one of the rollers (10a, 10b, 11, 20a, 20b); the actuating device (40) being set up to set one or more of the manipulated variables taking into account the determined state of wear.

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Aufwickeln und/oder Abwickeln eines Bandes, vorzugsweise zum Aufwickeln eines Metallbandes zu einem Bund in der Metallverarbeitung.The invention relates to a device and a method for winding and / or unwinding a strip, preferably for winding a metal strip into a coil in metal processing.

Hintergrund der ErfindungBackground of the Invention

Es ist bekannt, ein wickelfähiges Metallband - etwa nach dem Austritt aus einem Walzgerüst einer Walzstraße - in einer Coilbox zu einem Bund, auch als Coil bezeichnet, aufzuwickeln. Die Coilbox weist üblicherweise mehrere Biegerollen, die das Band anbiegen und auf diese Weise in eine zum Aufwickeln geeignete Lage bringen, und Aufwickelrollen auf, die das Band zumeist dornlos, d.h. mit offenem Auge, aufwickeln. Die Coilbox kann ferner Mittel zum Transportieren des Bandes, sowie zum Umsetzen und Abwickeln des Bundes aufweisen. Eine solche Coilbox ist beispielsweise in der DE 198 03 091 A1 beschrieben.It is known to wind a metal strip capable of winding - for example after emerging from a roll stand of a rolling mill - in a coil box to form a bundle, also referred to as a coil. The coil box usually has a plurality of bending rollers which bend the tape and in this way bring it into a position suitable for winding up, and winding rollers which usually wind up the tape without a thorn, ie with an open eye. The coil box can also have means for transporting the tape, as well as for moving and unwinding the coil. Such a coil box is for example in the DE 198 03 091 A1 described.

Die am Transport, Biegen und Aufwickeln des Bandes beteiligten Rollen sind während des Prozesses unterschiedlichen Belastungen ausgesetzt, wodurch sie unterschiedlich schnell und auf unterschiedliche Weise verschleißen. So ändern sich die Eingriffszeiten und Angriffswinkel des Bandes relativ zu den Rollen im Verlauf der Zeit. Dieses Problem tritt verstärkt dann auf, wenn mehrere Rollen von einem gemeinsamen Antriebsstrang angetrieben werden.The rolls involved in transporting, bending and winding up the strip are exposed to different loads during the process, which means that they wear at different speeds and in different ways. So the engagement times and angle of attack of the belt change relative to the roles over time. This problem becomes more pronounced when several rollers are driven by a common drive train.

Die WO 2009/097957 A1 beschreibt ein Verfahren, bei dem die Umfangsgeschwindigkeit der Biegerollen auf die Oberflächengeschwindigkeit des Metallbandes an der Berührungslinie eingestellt wird. Dadurch lässt sich der Schlupf zwischen dem Metallband und den Biegerollen verringern, allerdings sind die Biegerollen weiterhin unterschiedlichen Belastungen - etwa unterschiedlichen Eingriffszeiten, Angriffswinkeln, Druckkräften usw. - ausgesetzt, wodurch ein unterschiedliches Verschleißverhalten auftreten kann.The WO 2009/097957 A1 describes a method in which the peripheral speed of the bending rollers is set to the surface speed of the metal strip at the line of contact. This can reduce the slippage between the metal band and the bending rollers, but it does the bending rollers continue to be exposed to different loads - such as different engagement times, angles of attack, compressive forces, etc. - which can result in different wear behavior.

Darstellung der ErfindungPresentation of the invention

Eine Aufgabe der Erfindung besteht darin, eine Vorrichtung und ein Verfahren zum Aufwickeln und/oder Abwickeln eines Bandes, vorzugsweise zum Aufwickeln eines Metallbandes zu einem Bund in der Metallverarbeitung, bereitzustellen, die das Verschleißverhalten von Rollen, insbesondere Transport-, Führungs-, Biege- und Aufwickelrollen, optimieren.An object of the invention is to provide a device and a method for winding and / or unwinding a strip, preferably for winding a metal strip into a coil in metalworking, which improve the wear behavior of rollers, in particular transport, guidance, bending and take-up rolls, optimize.

Gelöst wird die Aufgabe mit einer Vorrichtung mit den Merkmalen des Anspruchs 1 sowie einem Verfahren mit den Merkmalen des Anspruchs 7. Vorteilhafte Weiterbildungen folgen aus den Unteransprüchen, der folgenden Darstellung der Erfindung sowie der Beschreibung bevorzugter Ausführungsbeispiele.The object is achieved with a device with the features of claim 1 and a method with the features of claim 7. Advantageous further developments follow from the subclaims, the following description of the invention and the description of preferred exemplary embodiments.

Erfindungsgemäß dient die Vorrichtung zum Aufwickeln und/oder Abwickeln eines Bandes. Das Band ist vorzugsweise ein Metallband. So kann das Band beispielsweise ein aus einem Walzgerüst auslaufendes Metallband sein, das von der Vorrichtung zu einem Bund aufgewickelt wird. Die Vorrichtung weist mehrere Rollen auf. Die Rollen dienen beispielsweise dem Transport, der Führung, dem Biegen, Aufwickeln und/oder Abwickeln des Bandes und stehen dabei mit diesem zumindest zeitweise in Kontakt. Zumindest eine Rolle, vorzugsweise mehrere oder alle Rollen, weist eine oder mehrere änderbare Stellgrößen auf, die von einer Stelleinrichtung einstellbar sind.According to the invention, the device is used for winding and / or unwinding a tape. The band is preferably a metal band. For example, the strip can be a metal strip that runs out of a roll stand and is wound up into a bundle by the device. The device has several roles. The rollers are used, for example, to transport, guide, bend, wind and / or unwind the tape and are in contact with it at least temporarily. At least one role, preferably several or all roles, has one or more changeable manipulated variables that can be set by an actuating device.

Mit "Stellgröße" ist eine änderbare physikalische, vorzugsweise mechanische, Eigenschaft der Rolle bezeichnet. Die Drehgeschwindigkeit der Rolle kann eine Stellgröße sein, wie auch das Drehmoment, die Lage und/oder Ausrichtung der Rolle usw.. Die Stellgröße kann den Zustand der Rolle auch indirekt beschreiben, indem sie beispielsweise eine Größe zur Ansteuerung eines Antriebs der Rolle betrifft. In diesem Sinne wird beispielsweise die Drehgeschwindigkeit der Rolle ebenso als mögliche Stellgröße betrachtet, wie das Motordrehmoment des Antriebs oder der Erregerstrom zur Betätigung des Antriebs. Wird - um ein anderes Beispiel zu nennen - die räumliche Lage der Rolle über einen Hydraulikzylinder eingestellt, so kann die Stellgröße die Position der Rolle, die Position des Kolbens im Zylinder oder auch die Drücke zum Betätigen des Hydraulikzylinders kennzeichnen. Wichtig ist, dass eine oder mehrere Stellgrößen von einer Steuereinheit, die hier als Stelleinrichtung bezeichnet ist, einstellbar sind. Vorzugsweise ist eine oder sind mehrere Stellgrößen während des regulären Betriebs der Vorrichtung, d.h. während des Wickelns eines Bandes, einstellbar.A manipulated variable denotes a changeable physical, preferably mechanical, property of the roller. The speed of rotation of the roller can be a manipulated variable, as can the torque, the position and / or orientation of the roller etc. The manipulated variable can also indirectly describe the condition of the roller, for example, it relates to a variable for controlling a drive of the roller. In this sense, the rotational speed of the roller, for example, is also considered as a possible manipulated variable, as is the motor torque of the drive or the excitation current for actuating the drive. If - to give another example - the spatial position of the roller is set via a hydraulic cylinder, the manipulated variable can identify the position of the roller, the position of the piston in the cylinder or the pressures for actuating the hydraulic cylinder. It is important that one or more manipulated variables can be set by a control unit, which is referred to here as an actuating device. One or more manipulated variables can preferably be set during the regular operation of the device, ie during the winding of a strip.

Die Vorrichtung weist ferner eine Verschleißermittlungseinrichtung auf, die eingerichtet ist, um einen Verschleißzustand zumindest einer der Rollen zu ermitteln. Der Verschleißzustand umfasst zumindest eine physikalische Eigenschaft einer oder mehrerer Rollen, die sich im Verlauf des Betriebs der Vorrichtung aufgrund von Verschleiß ändert. So kann der Kontakt einer Rolle mit dem Band im Verlauf der Zeit eine Profiländerung oder eine Änderung des Durchmessers der Rolle bewirken. Es sei darauf hingewiesen, dass verschiedene Rollen in der Regel unterschiedlich schnell und auf unterschiedliche Art und Weise verschleißen, da sie unterschiedlichen Belastungen, etwa unterschiedlichen Eingriffszeiten und Angriffswinkeln, ausgesetzt sind. Dieses Problem tritt verstärkt dann auf, wenn mehrere Rollen von einem gemeinsamen Antriebsstrang angetrieben werden. Aus diesem Grund weist die Vorrichtung vorzugsweise mehrere angetriebene Rollen auf, die jeweils zumindest eine Stellgröße, einstellbar durch die Stelleinrichtung, aufweisen und von einem eigenen Antriebsstrang angetrieben werden. Der Antriebsstrang umfasst vorzugsweise ein Antriebsgetriebe, so dass die angetriebenen Rollen zumindest im Hinblick auf das Getriebe entkoppelt sind, wodurch dem unterschiedlichen Verschleißverhalten Rechnung getragen werden kann. Vorzugsweise verfügen die individuellen Antriebsstränge auch über eigene Motoren, etwa Elektromotoren, um das Verschleißverhalten weiter zu optimieren.The device also has a wear detection device which is set up to determine a wear state of at least one of the rollers. The state of wear comprises at least one physical property of one or more rollers that changes due to wear during the course of the operation of the device. For example, the contact of a roll with the belt over time can cause a change in profile or a change in the diameter of the roll. It should be pointed out that different rollers generally wear at different speeds and in different ways, since they are exposed to different loads, for example different engagement times and angles of attack. This problem becomes more pronounced when several rollers are driven by a common drive train. For this reason, the device preferably has a plurality of driven rollers, each of which has at least one manipulated variable that can be set by the actuating device and is driven by its own drive train. The drive train preferably comprises a drive gear, so that the driven rollers are decoupled, at least with regard to the gear, so that the different wear behavior can be taken into account. Preferably the individual Drive trains also have their own motors, such as electric motors, to further optimize wear behavior.

Zum Begriff des "Verschleißzustands" sei darauf hingewiesen, dass dieser durch Messwerte von Sensoren, auf der Grundlage eines theoretischen Verschleißmodells oder durch eine Kombination aus beiden Konzepten ermittelt werden kann. So kann beispielsweise während des Betriebs kontinuierlich oder in bestimmten Abständen der Durchmesser einer oder mehrerer Rollen gemessen werden, dessen Änderung im Verlauf der Zeit als ein Bestimmungsparameter des Verschleißzustands herangezogen wird. Alternativ oder zusätzlich können die Profile von Rollen gemessen oder theoretisch ermittelt werden und in den Verschleißzustand eingehen. Stellgrößen können zu diesem Zweck ebenso berücksichtigt werden wie die Banddicke, Bandbreite, Bandtemperatur, Biegekraft, das Bundgewicht, die Bundgröße usw.. Der auf experimenteller und/oder theoretischer Basis ermittelte Verschleißzustand ist somit ein Maß für den Verschleiß einer oder mehrerer Rollen.Regarding the term "state of wear", it should be pointed out that this can be determined by measured values from sensors, on the basis of a theoretical model of wear or by a combination of both concepts. For example, the diameter of one or more rollers can be measured continuously or at certain intervals during operation, the change over time of which is used as a determining parameter of the state of wear. As an alternative or in addition, the profiles of rolls can be measured or theoretically determined and considered in the state of wear. For this purpose, manipulated variables can be taken into account as well as the strip thickness, strip width, strip temperature, bending force, the strip weight, the strip size, etc. The wear condition determined on an experimental and / or theoretical basis is thus a measure of the wear of one or more rollers.

Die Stelleinrichtung ist so eingerichtet, dass diese eine oder mehrere Stellgrößen unter Berücksichtigung des ermittelten Verschleißzustands ändert. In anderen Worten: Die Ansteuerung einer oder mehrerer Rollen, etwa das Einstellen von Drehgeschwindigkeiten und/oder der zeitliche Verlauf des Auffahrens von Biegerollen und/oder das Absenken von Aufwickelrollen usw., erfolgt unter Berücksichtigung des ermittelten Verschleißzustands.The actuating device is set up in such a way that it changes one or more manipulated variables, taking into account the determined state of wear. In other words: The control of one or more rollers, for example the setting of rotational speeds and / or the chronological course of the opening of bending rollers and / or the lowering of winding rollers etc., takes place taking into account the determined state of wear.

Auf diese Weist lässt sich das Verschleißverhalten optimieren. Insbesondere kann der Verschleiß verschiedener Rollen vergleichmäßigt werden, wodurch ihre Einsatzzeit vergrößert, sowie Wartungszeiten und Zeiten, in denen die Vorrichtung verschleißbedingt stillsteht, verringert werden können. Die Verschleißoptimierung, sofern sie Biegerollen und/oder Aufwickelrollen umfasst, trägt zudem zu einer Verbesserung des Bundaugendurchmessers, der Ovalität des Bundes und der Bundöffnungssequenz bei. Die Produktionssicherheit wird durch eine Reduzierung der Cobblerate verbessert. Durch eine damit verbundene Verbesserung der Verschleißvorhersage ist zudem eine Verbesserung der Stillstands- und Ersatzteilplanung gegeben.The wear behavior can be optimized in this way. In particular, the wear of different rollers can be evened out, which increases their operating time and also reduces maintenance times and times in which the device is at a standstill due to wear. The wear optimization, insofar as it includes bending rollers and / or winding rollers, also contributes to an improvement in the collar eye diameter, the ovality of the collar and the collar opening sequence. Production security is reduced the cobbler rate improved. The associated improvement in wear prediction also improves downtime and spare parts planning.

Die Optimierung des Verschleißverhaltens kann durch Nachregelung von Setzwerten der Rollenantriebe auf der Basis des gemessenen und/oder anderweitig ermittelten Verschleißes an verschiedenen Rollen erfolgen, etwa basierend auf den unterschiedlichen Eingriffszeiten, Bandbreiten und den dabei auftretenden Belastungen, sowie der Eingangsrollenform, d.h. der ursprünglichen Rollenform vor der verschleißbedingten Änderung, und dem Rollengrundmaterial.The wear behavior can be optimized by readjusting the setting values of the roller drives on the basis of the measured and / or otherwise determined wear on different rollers, for example based on the different engagement times, bandwidths and the loads that occur, as well as the input roller shape, i.e. the original roll shape before the wear-related change, and the roll base material.

Ein typisches Verschleißverhalten, insbesondere bei Warmbandstraßen, ist unter der Bezeichnung "Sargprofiel" bekannt. Damit ist die Tendenz gemeint, dass Rollen aufgrund einer stärkeren Belastung in der Mitte als an den Rändern (in Axialrichtung gesehen) in der Mitte schneller verschleißen als an den Rändern, wodurch ein konkaves Verschleißprofil entsteht. Einem solchen Verschleißverhalten kann durch Aufbringen unterschiedlich harter Schichten entlang der axialen Erstreckung der Rolle entgegengewirkt werden. Eine weitere Maßnahme, die eine bevorzugte Ausführungsform betriff, besteht darin, durch eine seitliche Verschiebung der Rolle eine Vergleichmäßigung der Lastverteilung durch die Bandbreitenschwankung zu erreichen. Ein Maß für die seitliche Position oder Verschiebung der Rolle stellt in diesem Fall eine Stellgröße in dem oben definierten Sinne dar, die über die Stelleinrichtung unter Berücksichtigung des Verschleißzustands einstellbar ist.A typical wear behavior, especially in hot strip mills, is known under the name "coffin profile". This means the tendency that due to a higher load in the middle than at the edges (seen in the axial direction), rollers wear out faster in the middle than at the edges, which creates a concave wear profile. Such wear behavior can be counteracted by applying layers of different hardness along the axial extent of the roller. Another measure, which relates to a preferred embodiment, is to achieve an equalization of the load distribution due to the bandwidth fluctuation by a lateral displacement of the roller. In this case, a measure of the lateral position or displacement of the roller is a manipulated variable in the sense defined above, which can be adjusted via the actuating device, taking into account the state of wear.

Das erfindungsgemäße Verfahren dient wie die Vorrichtung zum Aufwickeln und/oder Abwickeln eines Bandes, vorzugsweise zum Aufwickeln eines Metallbandes in der Metallverarbeitung. Die technischen Wirkungen, bevorzugten Ausführungsbeispiele und Beiträge zum Stand der Technik, die in Bezug auf die Vorrichtung beschrieben wurden, gelten auf analoge Weise für das Verfahren.The method according to the invention is used like the device for winding and / or unwinding a strip, preferably for winding a metal strip in metal processing. The technical effects, preferred exemplary embodiments and contributions to the prior art, which have been described in relation to the device, apply analogously to the method.

Die Vorrichtung und das Verfahren sind besonders geeignet zur Verschleißoptimierung von Biegerollen und/oder Aufwickelrollen in Coilboxen. Doch die Erfindung kann auch in anderen Bereichen umgesetzt werden, so etwa zur Verschleißoptimierung von Transportrollen, Führungsrollen, Abwickelrollen usw..The device and the method are particularly suitable for optimizing the wear of bending rolls and / or winding rolls in coil boxes. But the invention can also be implemented in other areas, for example to optimize wear on transport rollers, guide rollers, unwinding rollers, etc.

Weitere Vorteile und Merkmale der vorliegenden Erfindung sind aus der folgenden Beschreibung bevorzugter Ausführungsbeispiele ersichtlich. Die dort beschriebenen Merkmale können alleinstehend oder in Kombination mit einem oder mehreren der oben dargelegten Merkmale realisiert werden, insofern sich die Merkmale nicht widersprechen. Die folgende Beschreibung bevorzugter Ausführungsbeispiele erfolgt mit Bezug auf die begleitenden Zeichnungen.Further advantages and features of the present invention are evident from the following description of preferred exemplary embodiments. The features described there can be implemented on their own or in combination with one or more of the features set out above, provided that the features do not contradict each other. The following description of preferred exemplary embodiments takes place with reference to the accompanying drawings.

Kurze Beschreibung der FigurenBrief description of the figures

Die Figuren 1 bis 6 zeigen auf schematische Weise die Anordnung von Biege- und Aufwickelrollen einer Coilbox im Verlauf des Aufwickelns eines Metallbandes.The Figures 1 to 6 schematically show the arrangement of bending and winding rolls of a coil box in the course of winding a metal strip.

Detaillierte Beschreibung bevorzugter AusführungsbeispieleDetailed description of preferred embodiments

Im Folgenden werden bevorzugte Ausführungsbeispiele anhand der Figuren beschrieben. Dabei sind gleiche, ähnliche oder gleichwirkende Elemente mit identischen Bezugszeichen versehen, und auf eine wiederholende Beschreibung dieser Elemente wird teilweise verzichtet, um Redundanzen zu vermeiden.Preferred exemplary embodiments are described below with reference to the figures. The same, similar or equivalent elements are provided with identical reference numerals, and a repeated description of these elements is partially omitted in order to avoid redundancies.

Die Figur 1 zeigt eine Anordnung von Biege- und Aufwickelrollen in einer Coilbox zum Aufwickeln eines Metallbandes. Die Coilbox weist eine Gruppe von Biegerollen mit zwei oberen Biegerollen 10a, 10b und einer unteren Biegerolle 11 auf. Die obere Biegerolle 10b und die untere Biegerolle 11 definieren einen Biegespalt B, durch den das aufzuwickelnde Band 1 (vgl. Figur 2 bis 6) hindurchgeführt wird. Die Anstellung der oberen Biegerollen 10a, 10b relativ zur unteren Biegerolle 11 ist mittels eines Anstellzylinders 12 veränderbar. Die untere Biegerolle 11 ist im vorliegenden Ausführungsbeispiel stationär ausgebildet, deren Position kann allerdings ebenfalls verstellbar vorgesehen sein. Die Coilbox weist ferner zwei Aufwickelrollen 20a, 20b auf, die den während des Aufwickelns entstehenden und wachsenden Bund 2 (vgl. Figur 4 bis 6) tragen und drehbar lagern. Die Anstellung der Aufwickelrollen 20a, 20b ist durch einen Anstellzylinder 22 änderbar.The Figure 1 shows an arrangement of bending and winding rollers in a coil box for winding a metal strip. The coil box has a group of bending rollers with two upper bending rollers 10a, 10b and a lower bending roller 11. The upper bending roller 10b and the lower bending roller 11 define a bending gap B through which the tape 1 to be wound up (cf. Figure 2 to 6 ) is passed through. The inclination of the upper bending rollers 10a, 10b relative to the lower bending roller 11 can be changed by means of an adjusting cylinder 12. The lower bending roller 11 is designed to be stationary in the present exemplary embodiment, but its position can also be provided so as to be adjustable. The coil box also has two winding rollers 20a, 20b which hold the bundle 2 which is created and growing during winding (cf. Figure 4 to 6 ) carry and store rotatable. The setting of the winding rollers 20a, 20b can be changed by a setting cylinder 22.

Die Anstellzylinder 12, 22 sind im vorliegenden Beispiel jeweils als Hydraulikzylinder ausgeführt, allerdings besteht diesbezüglich keine Beschränkung. Die Verstellung der Rollen kann auf verschiedene Weise realisiert werden, beispielsweise elektromotorisch oder magnetisch. Ferner kann die Verstellung der Rollen gruppenweise oder individuell erfolgen.The positioning cylinders 12, 22 are each designed as hydraulic cylinders in the present example, but there is no restriction in this regard. The rollers can be adjusted in various ways, for example by means of an electric motor or magnetically. Furthermore, the roles can be adjusted in groups or individually.

Neben den Biegerollen 10a, 10b, 11 und den Aufwickelrollen 20a, 20b können weitere Rollen und/oder Mittel zum Führen und/oder Transportieren des Bandes 1 vorgesehen sein. Die Coilbox gemäß dem vorliegenden Beispiel weist beispielsweise eine Formrolle 30 und drei Kontaktelemente 31a, 31b, 31c auf, die zu einem definierten Aufwickeln des Bandes 1 beitragen.In addition to the bending rollers 10a, 10b, 11 and the winding rollers 20a, 20b, further rollers and / or means for guiding and / or transporting the band 1 can be provided. The coil box according to the present example has, for example, a form roller 30 and three contact elements 31a, 31b, 31c, which contribute to a defined winding of the tape 1.

Die Anstellzylinder 12, 22 werden von einer Stelleinrichtung 40 angesteuert. Die Stelleinrichtung 40 weist eine weiter unten detaillierter beschriebene Verschleißermittlungseinrichtung 50 auf oder kommuniziert mit einer solchen.The positioning cylinders 12, 22 are controlled by an actuating device 40. The actuating device 40 has a wear detection device 50, which is described in more detail below, or communicates with one.

Die Figur 2 zeigt einen Zustand der Coilbox zu Beginn des Aufwickelvorgangs. Das Band 1, das durch den Biegespalt B tritt, wird während des Transports von den Biegerollen 10a, 10b, 11 so gebogen, dass es mit dem Kontaktelement 31a in Kontakt kommt. Die Positionen und Drehzahlen der Biege- und Aufwickelrollen 10a, 10b, 11, 20a, 20b werden hierbei von der Stelleinrichtung 40 gesteuert, wobei die Rollen mit Ihren Vor- und Nacheilungen in Relation zur Bandgeschwindigkeit auf eine bestimmte Drehzahl gebracht und gehalten werden.The Figure 2 shows a state of the coil box at the beginning of the winding process. The tape 1, which passes through the bending gap B, is bent during the transport by the bending rollers 10a, 10b, 11 so that it comes into contact with the contact element 31a. The positions and speeds of the bending and winding rollers 10a, 10b, 11, 20a, 20b are controlled by the adjusting device 40, wherein the rolls are brought up to a certain speed with their leading and lagging in relation to the belt speed.

Die Figur 3 zeigt einen Zustand, in dem das durch die Biegerollen 10a, 10b, 11 vorgebogene Band 1 weiter in Richtung zu den Aufwickelrollen 20a, 20b transportiert wurde. Das Band 1 beginnt, sich ohne Dorn und in Kontakt mit der Aufwickelrolle 20a zu einem Bund 2 aufzuwickeln, wie ein Vergleich mit der Figur 4 zeigt.The Figure 3 shows a state in which the tape 1 pre-bent by the bending rollers 10a, 10b, 11 has been transported further towards the winding rollers 20a, 20b. The tape 1 begins to wind up without a mandrel and in contact with the take-up reel 20a into a bundle 2, as a comparison with that Figure 4 shows.

Beim Erreichen eines bestimmten Bunddurchmessers veranlasst die Stelleinrichtung 40 ein Auffahren der oberen Biegerollen 10a, 10b, d.h. der Anstellzylinder 12 bewegt eine oder beide obere Biegerollen 10a, 10b von der stationären Biegerolle 11 weg, wodurch sich der Biegespalt B vergrößert. Die Richtung des Auffahrens der oberen Biegerollen 10a, 10b ist in der Figur 4 durch einen Pfeil gezeigt.When a certain collar diameter is reached, the actuating device 40 causes the upper bending rollers 10a, 10b to open, ie the positioning cylinder 12 moves one or both upper bending rollers 10a, 10b away from the stationary bending roller 11, as a result of which the bending gap B increases. The direction of the opening of the upper bending rollers 10a, 10b is in the Figure 4 shown by an arrow.

Im weiteren Verlauf des Aufwickelns, ausgelöst durch Erreichen eines bestimmten Bunddurchmessers, veranlasst die Stelleinrichtung 40 zusätzlich zum Auffahren der oberen Biegerollen 10a, 10b ein Absenken der Aufwickelrollen 20a, 20b, um Platz für den wachsenden Bund 2 zu schaffen. Dies geht, ebenfalls durch einen Pfeil angezeigt, aus der Figur 5 hervor.In the further course of the winding, triggered by reaching a certain bundle diameter, the adjusting device 40 causes the winding rollers 20a, 20b to lower in addition to the upper bending rollers 10a, 10b in order to make room for the growing bundle 2. This is also indicated by an arrow from the Figure 5 out.

Durch das Auffahren der oberen Biegerollen 10a, 10b verändert sich der Kontaktzustand des Bandes 1 relativ zu den Biegerollen 10a, 10b, 11. So ändert sich ab einer gewissen Öffnung des Biegespalts B die Anlage des Bandes 1 von einem Kontakt mit allen drei Biegerollen 10a, 10b, 11 zu einem Kontakt mit nur noch zwei Biegerollen 10b, 11, wie in der Figur 6 dargestellt. Die Änderung des Kontaktzustands ist nicht nur eine Funktion der Zeit, d.h. des Prozessstadiums, sondern hängt auch von anderen Parametern ab, so etwa der Materialdicke des Bandes 1, der Bandtemperatur und Bandfestigkeit. Ferner verschiebt sich mit dem Absenken der Aufwickelrollen 20a, 20b der Schwerpunkt des Bundes 2 von der Aufwickelrolle 20a und der Formrolle 30 nach und nach in Richtung zur Aufwickelrolle 20b, wodurch sich die Kontaktpunkte und Kontaktdrücke zwischen den Rollen und dem Band 1 verändern. Dadurch können Verschleißungleichgewichte bei den Rollen auftreten.When the upper bending rollers 10a, 10b are opened, the contact state of the strip 1 changes relative to the bending rollers 10a, 10b, 11. Thus, from a certain opening of the bending gap B, the contact of the strip 1 changes from contact with all three bending rollers 10a, 10b, 11 for contact with only two bending rollers 10b, 11, as in the Figure 6 shown. The change in the contact state is not only a function of time, ie the process stage, but also depends on other parameters, such as the material thickness of the strip 1, the strip temperature and strip strength. Furthermore, with the lowering of the winding rollers 20a, 20b, the center of gravity of the bundle 2 shifts from the Take-up roll 20a and form roll 30 gradually towards take-up roll 20b, thereby changing the contact points and contact pressures between the rolls and the belt 1. This can cause wear imbalances in the rollers.

Um einem ungleichmäßigen Verschleißverhalten entgegenzuwirken und den Verschleiß insgesamt zu verringern, weist die Coilbox die Verschleißermittlungseinrichtung 50 auf. Diese ist eingerichtet, um einen Verschleißzustand einer oder mehrerer der Rollen 10a, 10b, 11, 20a, 20b zu ermitteln. Der Verschleißzustand umfasst zumindest eine physikalische Eigenschaft der betreffenden Rolle(n), die sich im Verlauf des Betriebs der Coilbox aufgrund von Abnutzung ändert. So kann beispielsweise eine Profiländerung oder eine Änderung des Durchmessers einer oder mehrerer der Biegerollen 10a, 10b, 11 in den Verschleißzustand eingehen. Die Ermittlung des Verschleißzustands kann auf verschiedene Art und Weise erfolgen. Insbesondere kann der Verschleißzustand auf der Grundlage eines theoretischen Verschleißmodells und/oder unter Berücksichtigung von Sensordaten erfolgen.In order to counteract uneven wear behavior and to reduce the wear overall, the coil box has the wear detection device 50. This is set up to determine a state of wear of one or more of the rollers 10a, 10b, 11, 20a, 20b. The state of wear includes at least one physical property of the roll (s) in question, which changes due to wear during the operation of the coil box. For example, a change in the profile or a change in the diameter of one or more of the bending rollers 10a, 10b, 11 may change into the state of wear. The state of wear can be determined in various ways. In particular, the state of wear can be based on a theoretical wear model and / or taking sensor data into account.

So können beispielsweise den Biegerollen 10a, 10b, 11 Sensoren zugeordnet sein, die einen oder mehrere zur Ermittlung des Verschleißzustands geeignete Parameter - etwa den Rollendurchmesser, das Rollenprofil, die Drehgeschwindigkeit usw. - messen. Die Sensoren kommunizieren mit der Verschleißermittlungseinrichtung 50, die wiederum aus den Sensordaten und ggf. unter Berücksichtigung eines theoretischen Modells einen Verschleißzustand ermittelt. Die Stelleinrichtung 40 ist nun so eingerichtet, dass diese die Stellgrößen unter Berücksichtigung des ermittelten Verschleißzustands ändert. So können beispielsweise die Drehzahlen der Biegerollen 10a, 10b, 11 und/oder der zeitliche Verlauf des Auffahrens der oberen Biegerollen 10a, 10b eine Funktion des Verschleißzustands, etwa der gemessenen Rollendurchmesser, sein.For example, the bending rollers 10a, 10b, 11 can be assigned sensors which measure one or more parameters suitable for determining the state of wear - such as the roller diameter, the roller profile, the speed of rotation, etc. The sensors communicate with the wear detection device 50, which in turn determines a wear state from the sensor data and, if necessary, taking into account a theoretical model. The actuating device 40 is now set up in such a way that it changes the manipulated variables taking into account the determined state of wear. For example, the speeds of the bending rollers 10a, 10b, 11 and / or the time course of the opening of the upper bending rollers 10a, 10b can be a function of the state of wear, such as the measured roller diameter.

Auf diese Weist lässt sich das Verschleißverhalten der Rollen optimieren. Insbesondere kann der Verschleiß verschiedener Rollen vergleichmäßigt werden, wodurch ihre Einsatzzeit vergrößert, sowie Wartungszeiten und Zeiten, in denen die Coilbox verschleißbedingt stillsteht, verringert werden können. Die Verschleißoptimierung trägt zudem zu einer Verbesserung des Bundaugendurchmessers, der Ovalität des Bunds 2 und der Bundöffnungssequenz bei. Die Produktionssicherheit wird durch eine Reduzierung der Cobblerate verbessert. Ferner ist eine genauere Verschleißvorhersage möglich, die zu einer Verbesserung der Stillstands- und Ersatzteilplanung beiträgt.In this way, the wear behavior of the rollers can be optimized. In particular, the wear of different rolls can be evened out, which increases their operating time, as well as maintenance times and times in which the coil box comes to a standstill due to wear. The wear optimization also contributes to an improvement in the collar eye diameter, the ovality of the collar 2 and the collar opening sequence. Production security is improved by reducing the cobbler rate. Furthermore, a more precise wear forecast is possible, which contributes to an improvement in downtime and spare parts planning.

Die Verschleißermittlungseinrichtung (50) ist vorzugsweise eingerichtet, um den Verschleißzustand unter Berücksichtigung von Messwerten, gemessen von einem oder mehreren Sensoren, zu ermitteln, wobei die Messwerte vorzugsweise eine oder mehrere Größen der folgenden Auswahl umfassen: Drehgeschwindigkeit einer oder mehrerer der Rollen (10a, 10b, 11, 20a, 20b); Drehmoment einer oder mehrerer der Rollen; Drehgeschwindigkeitsänderung einer oder mehrerer der Rollen; Drehmomentänderung einer oder mehrerer der Rollen; Profil einer oder mehrerer der Rollen; Profiländerung einer oder mehrerer der Rollen; Durchmesser einer oder mehrerer der Rollen; Durchmesseränderung einer oder mehrerer der Rollen; Lage und/oder Ausrichtung einer oder mehrerer der Rollen; Banddicke; Bandbreite; Bandtemperatur; Biegekraft; Bundgewicht; Bundgröße.The wear detection device (50) is preferably set up to determine the state of wear taking into account measured values measured by one or more sensors, the measured values preferably comprising one or more variables from the following selection: rotational speed of one or more of the rollers (10a, 10b , 11, 20a, 20b); Torque of one or more of the rollers; Change in rotational speed of one or more of the rollers; Torque change of one or more of the rollers; Profile of one or more of the roles; Changing the profile of one or more of the roles; Diameter of one or more of the rollers; Change in diameter of one or more of the rollers; Location and / or orientation of one or more of the rollers; Strip thickness; bandwidth; Strip temperature; Bending force; Coil weight; Bund size.

Die von der Stelleinrichtung (40) einstellbaren Stellgrößen umfassen vorzugsweise eine oder mehrere Größen der folgenden Auswahl: Drehgeschwindigkeit einer oder mehrerer der Rollen (10a, 10b, 11, 20a, 20b); Drehmoment einer oder mehrerer der Rollen; Vor- und/oder Nacheilungsfaktor einer oder mehrerer der Rollen; Lage und/oder Ausrichtung einer oder mehrerer der Rollen.The manipulated variables that can be set by the adjusting device (40) preferably include one or more variables from the following selection: rotational speed of one or more of the rollers (10a, 10b, 11, 20a, 20b); Torque of one or more of the rollers; Pre- and / or lag factor of one or more of the roles; Location and / or orientation of one or more of the roles.

Die Rollen (10a, 10b, 11, 20a, 20b) umfassen vorzugsweise mehrere angetriebene Rollen, die jeweils zumindest eine Stellgröße, einstellbar durch die Stelleinrichtung (40), aufweisen und von einem eigenen Antriebsstrang (in den Figuren nicht dargestellt), der vorzugsweise ein Antriebsgetriebe und/oder einen Motor aufweist, antreibbar sind.The rollers (10a, 10b, 11, 20a, 20b) preferably comprise a plurality of driven rollers, each of which has at least one manipulated variable that can be set by the actuating device (40) and of its own drive train (in the Figures not shown), which preferably has a drive gear and / or a motor, can be driven.

Soweit anwendbar, können alle einzelnen Merkmale, die in den Ausführungsbeispielen dargestellt sind, miteinander kombiniert und/oder ausgetauscht werden, ohne den Bereich der Erfindung zu verlassen.As far as applicable, all individual features that are shown in the exemplary embodiments can be combined with one another and / or exchanged without leaving the scope of the invention.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Bandtape
22
Bund/CoilFederal / Coil
10a, 10b10a, 10b
Obere BiegerollenUpper bending rolls
1111
Untere BiegerolleLower bending roll
1212
Anstellzylinder für die oberen BiegerollenAdjusting cylinder for the upper bending rollers
20a, 20b20a, 20b
Aufwickelrollenwinding rolls
2222
Anstellzylinder für die AufwickelrollenPositioning cylinder for the winding rollers
3030
Formrolleforming roller
31a, 31b, 31c31a, 31b, 31c
Kontaktelementecontact elements
4040
Stelleinrichtungsetting device
5050
VerschleißermittlungseinrichtungWear detection device
BB
Biegespaltbending gap

Claims (12)

Vorrichtung zum Aufwickeln und/oder Abwickeln eines Bandes (1), vorzugsweise zum Aufwickeln eines Metallbandes zu einem Bund (2) in der Metallverarbeitung, wobei die Vorrichtung aufweist: mehrere Rollen (10a, 10b, 11, 20a, 20b), die eingerichtet sind, um zumindest zeitweise mit dem Band (1) in Kontakt zu stehen, wobei zumindest eine der Rollen (10a, 10b, 11, 20a, 20b) eine oder mehrere änderbare Stellgrößen, die von einer Stelleinrichtung (40) einstellbar sind, aufweist; eine Verschleißermittlungseinrichtung (50), die eingerichtet ist, um einen Verschleißzustand zumindest einer der Rollen (10a, 10b, 11, 20a, 20b) zu ermitteln; wobei die Stelleinrichtung (40) eingerichtet ist, um eine oder mehrere der Stellgrößen unter Berücksichtigung des ermittelten Verschleißzustands einzustellen. Device for winding and / or unwinding a strip (1), preferably for winding a metal strip into a coil (2) in metal processing, the device comprising: a plurality of rollers (10a, 10b, 11, 20a, 20b) which are set up to be in contact with the belt (1) at least temporarily, at least one of the rollers (10a, 10b, 11, 20a, 20b) having one or has a plurality of changeable manipulated variables which can be set by an actuating device (40); a wear detection device (50) which is set up to determine a wear state of at least one of the rollers (10a, 10b, 11, 20a, 20b); in which the actuating device (40) is set up to set one or more of the manipulated variables taking into account the determined state of wear. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Stelleinrichtung (40) eingerichtet ist, um eine oder mehrere der Stellgrößen, die unter Berücksichtigung des ermittelten Verschleißzustands einzustellen sind, während des regulären Betriebs der Vorrichtung einzustellen.Apparatus according to claim 1, characterized in that the actuating device (40) is set up to set one or more of the manipulated variables which are to be set taking into account the determined state of wear and tear during normal operation of the apparatus. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Verschleißermittlungseinrichtung (50) eingerichtet ist, um den Verschleißzustand unter Berücksichtigung von Messwerten, gemessen von einem oder mehreren Sensoren, zu ermitteln, wobei die Messwerte vorzugsweise eine oder mehrere Größen der folgenden Auswahl umfassen: Drehgeschwindigkeit einer oder mehrerer der Rollen (10a, 10b, 11, 20a, 20b); Drehmoment einer oder mehrerer der Rollen; Drehgeschwindigkeitsänderung einer oder mehrerer der Rollen; Drehmomentänderung einer oder mehrerer der Rollen; Profil einer oder mehrerer der Rollen; Profiländerung einer oder mehrerer der Rollen; Durchmesser einer oder mehrerer der Rollen; Durchmesseränderung einer oder mehrerer der Rollen; Lage und/oder Ausrichtung einer oder mehrerer der Rollen; Banddicke; Bandbreite; Bandtemperatur; Biegekraft; Bundgewicht; Bundgröße.Apparatus according to claim 1 or 2, characterized in that the wear determining device (50) is set up to determine the state of wear taking into account measured values measured by one or more sensors, the measured values preferably comprising one or more variables from the following selection: Speed of rotation of one or more of the rollers (10a, 10b, 11, 20a, 20b); Torque of one or more of the rollers; Change in rotational speed of one or more of the rollers; Torque change of one or more of the rollers; Profile of one or more of the roles; Changing the profile of one or more of the roles; Diameter of one or more of the rollers; Change in diameter of one or more of the rollers; Location and / or orientation of one or more of the rollers; Strip thickness; bandwidth; Strip temperature; Bending force; Coil weight; Bund size. Vorrichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Verschleißermittlungseinrichtung (50) eingerichtet ist, um den Verschleißzustand auf der Grundlage eines Verschleißmodells oder unter Berücksichtigung von Modellparametern zu berechnen.Device according to one of the preceding claims, characterized in that the wear detection device (50) is set up to calculate the wear state on the basis of a wear model or taking model parameters into account. Vorrichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die von der Stelleinrichtung (40) einstellbaren Stellgrößen eine oder mehrere Größen der folgenden Auswahl umfassen: Drehgeschwindigkeit einer oder mehrerer der Rollen (10a, 10b, 11, 20a, 20b); Drehmoment einer oder mehrerer der Rollen; Vor- und/oder Nacheilungsfaktor einer oder mehrerer der Rollen; Lage und/oder Ausrichtung einer oder mehrerer der Rollen.Device according to one of the preceding claims, characterized in that the manipulated variables adjustable by the adjusting device (40) comprise one or more variables from the following selection: rotational speed of one or more of the rollers (10a, 10b, 11, 20a, 20b); Torque of one or more of the rollers; Pre- and / or lag factor of one or more of the roles; Location and / or orientation of one or more of the roles. Vorrichtung nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Rollen (10a, 10b, 11, 20a, 20b) mehrere angetriebene Rollen umfassen, die jeweils zumindest eine Stellgröße, einstellbar durch die Stelleinrichtung (40), aufweisen und von einem eigenen Antriebsstrang, der vorzugsweise ein Antriebsgetriebe und/oder einen Motor aufweist, antreibbar sind.Device according to one of the preceding claims, characterized in that the rollers (10a, 10b, 11, 20a, 20b) comprise a plurality of driven rollers, each of which has at least one manipulated variable, adjustable by the actuating device (40), and of its own drive train, which preferably has a drive gear and / or a motor, can be driven. Verfahren zum Aufwickeln und/oder Abwickeln eines Bandes (1), vorzugsweise zum Aufwickeln eines Metallbandes zu einem Bund (2) in der Metallverarbeitung, wobei das Verfahren aufweist: Transportieren, Führen, Biegen, Aufwickeln und/oder Abwickeln des Bandes (1) durch mehrere Rollen (10a, 10b, 11, 20a, 20b), die mit dem Band (1) zumindest zeitweise in Kontakt stehen; Einstellen einer oder mehrerer Stellgrößen zumindest einer der Rollen (10a, 10b, 11, 20a, 20b) mittels einer Stelleinrichtung (40); Ermitteln eines Verschleißzustands zumindest einer der Rollen (10a, 10b, 11, 20a, 20b) mittels einer Verschleißermittlungseinrichtung (50); wobei die Stelleinrichtung (40) eine oder mehrere der Stellgrößen unter Berücksichtigung des ermittelten Verschleißzustands einstellt. Method for winding and / or unwinding a strip (1), preferably for winding a metal strip into a bundle (2) in metal processing, the method comprising: Transporting, guiding, bending, winding and / or unwinding the tape (1) by means of a plurality of rollers (10a, 10b, 11, 20a, 20b) which are in contact with the tape (1) at least temporarily; Setting one or more manipulated variables of at least one of the rollers (10a, 10b, 11, 20a, 20b) by means of an adjusting device (40); Determining a state of wear of at least one of the rollers (10a, 10b, 11, 20a, 20b) by means of a wear detection device (50); wherein the adjusting device (40) adjusts one or more of the manipulated variables taking into account the determined state of wear. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Stelleinrichtung (40) eine oder mehrere der Stellgrößen, die unter Berücksichtigung des ermittelten Verschleißzustands eingestellt werden, während des regulären Betriebs der Vorrichtung einstellt.Method according to claim 7, characterized in that the adjusting device (40) adjusts one or more of the manipulated variables which are set taking into account the determined wear condition during the regular operation of the device. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Verschleißermittlungseinrichtung (50) den Verschleißzustand unter Berücksichtigung von Messwerten, gemessen von einem oder mehreren Sensoren, ermittelt, wobei die Messwerte vorzugsweise eine oder mehrere Größen der folgenden Auswahl umfassen: Drehgeschwindigkeit einer oder mehrerer der Rollen (10a, 10b, 11, 20a, 20b); Drehmoment einer oder mehrerer der Rollen; Drehgeschwindigkeitsänderung einer oder mehrerer der Rollen; Drehmomentänderung einer oder mehrerer der Rollen; Profil einer oder mehrerer der Rollen; Profiländerung einer oder mehrerer der Rollen; Durchmesser einer oder mehrerer der Rollen; Durchmesseränderung einer oder mehrerer der Rollen; Lage und/oder Ausrichtung einer oder mehrerer der Rollen; Banddicke; Bandbreite; Bandtemperatur; Biegekraft; Bundgewicht; Bundgröße.A method according to claim 7 or 8, characterized in that the wear determining device (50) determines the state of wear taking into account measured values measured by one or more sensors, the measured values preferably comprising one or more variables from the following selection: rotational speed of one or more of the Rollers (10a, 10b, 11, 20a, 20b); Torque of one or more of the rollers; Change in rotational speed of one or more of the rollers; Torque change of one or more of the rollers; Profile of one or more of the roles; Changing the profile of one or more of the roles; Diameter of one or more of the rollers; Change in diameter of one or more of the rollers; Location and / or orientation of one or more of the rollers; Strip thickness; bandwidth; Strip temperature; Bending force; Coil weight; Bund size. Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Verschleißermittlungseinrichtung (50) den Verschleißzustand auf der Grundlage eines Verschleißmodells oder unter Berücksichtigung von Modellparametern berechnet.Method according to one of claims 7 to 9, characterized in that the wear detection device (50) indicates the wear state calculated on the basis of a wear model or taking model parameters into account. Verfahren nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass die von der Stelleinrichtung (40) einstellbaren Stellgrößen eine oder mehrere Größen der folgenden Auswahl umfassen: Drehgeschwindigkeit einer oder mehrerer der Rollen (10a, 10b, 11, 20a, 20b); Drehmoment einer oder mehrerer der Rollen; Vor- und/oder Nacheilungsfaktor einer oder mehrerer der Rollen; Lage und/oder Ausrichtung einer oder mehrerer der Rollen.Method according to one of claims 7 to 10, characterized in that the manipulated variables adjustable by the adjusting device (40) comprise one or more variables from the following selection: rotational speed of one or more of the rollers (10a, 10b, 11, 20a, 20b); Torque of one or more of the rollers; Pre- and / or lag factor of one or more of the roles; Location and / or orientation of one or more of the roles. Verfahren nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass die Rollen (10a, 10b, 11, 20a, 20b) mehrere angetriebene Rollen umfassen, die jeweils zumindest eine Stellgröße, einstellbar durch die Stelleinrichtung (40), aufweisen und von einem eigenen Antriebsstrang, der vorzugsweise ein Antriebsgetriebe und/oder einen Motor aufweist, angetrieben werden.Method according to one of claims 7 to 11, characterized in that the rollers (10a, 10b, 11, 20a, 20b) comprise a plurality of driven rollers, each of which has at least one manipulated variable, adjustable by the actuating device (40), and of its own Drive train, which preferably has a drive gear and / or a motor, are driven.
EP19179962.6A 2018-06-15 2019-06-13 Wear reduction in coil box rollers Active EP3584016B1 (en)

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