EP1945387B1 - Operational method for a coiling arrangement for coiling a strip and corresponding objects - Google Patents

Operational method for a coiling arrangement for coiling a strip and corresponding objects Download PDF

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Publication number
EP1945387B1
EP1945387B1 EP06807311A EP06807311A EP1945387B1 EP 1945387 B1 EP1945387 B1 EP 1945387B1 EP 06807311 A EP06807311 A EP 06807311A EP 06807311 A EP06807311 A EP 06807311A EP 1945387 B1 EP1945387 B1 EP 1945387B1
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EP
European Patent Office
Prior art keywords
coiler
control device
time point
roller
reel
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
EP06807311A
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German (de)
French (fr)
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EP1945387A1 (en
Inventor
Otto Schmid
Gerhard Schwaiger
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Siemens AG
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Siemens AG
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Priority to PL06807311T priority Critical patent/PL1945387T3/en
Publication of EP1945387A1 publication Critical patent/EP1945387A1/en
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    • 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
    • B21C47/003—Regulation of tension or speed; Braking

Definitions

  • the present invention relates to an operating method for a reel assembly for reeling a tape, comprising at least one reel, a drive roller arranged in front of the reel and a control device for the reel and the drive roller.
  • the present invention further relates to a data carrier on which a computer program for a control device for carrying out such an operating method is stored. Furthermore, the present invention relates to a control device for a reel assembly of the type mentioned and such a reel assembly itself.
  • Reel assemblies for coiling a tape and method of operation for such reel assemblies are well known.
  • the driving roller grips the belt at a time which is referred to below to distinguish other times Rollenjanzeithui, and then leads it to the reel with a belt speed.
  • the belt reaches the reel at a point in time called the rewind time point to distinguish it from other times.
  • the reel does not yet grasp the band at this time. This happens only at a later time, which is referred to below to differentiate from other times actual barrel maturity date.
  • the control device At the reel, the control device outputs a reel setpoint speed and a reel limit moment acting in the direction of travel of the reel, so that the control device operates the reel in a speed-controlled and torque-limited manner.
  • the controller gives the roller a desired roller speed and a Roll limit torque acting in the strip running direction, so that the control device also operates the drive roller in a speed-controlled manner and with limited torque.
  • the reel target speed and the desired roller speed are determined such that both the reel and the drive roller lead the belt. This procedure is absolutely necessary and is also retained in the context of the present invention.
  • the reel limit torque is set in the prior art even before the reel king time, usually even before the Rollenjanzeittician, to a reel end torque, which is maintained constant until the reel catch time. Thereafter, the reel limit moment is varied so that the tension applied to the tape is constant.
  • the role limit torque is set in the prior art before the Rollenjanzeittician to a roll start torque and maintained constant until the reel catch time.
  • the procedure of the prior art results in that at the beginning of the coiling in the band, an increased train occurs.
  • the increased tension can be so great that it exceeds the yield strength of the band, thus leading to plastic deformations (constrictions) of the band.
  • the thickness and in particular the width of the tape to be reeled up are therefore changed plastically.
  • the thickness and the width of the band represent crucial quality parameters, which are thus adversely affected.
  • the JP 58163524 A discloses a reel assembly and an operating method for winding a tape.
  • the object of the present invention is to provide a possibility, the loss of quality or the risk To significantly reduce a loss of quality, if possible even eliminate it.
  • the reel catch time is a mathematically determined value at which the reel should have taken the tape. It may differ from the time the reel actually holds the tape.
  • the task for the data carrier is achieved in that a computer program for a control device for carrying out such an operating method is stored on it.
  • control device For the control device, the object is achieved in that it is designed such that it operates the reel and the drive roller according to such an operating method.
  • control device can for this purpose have a program memory in which a computer program for the control device is stored, and the control device operate the reel and the drive roller according to the invention on the basis of the computer program.
  • the object is achieved in that it has a correspondingly designed control device.
  • the reel limit moment is a differentiable function of time, e.g. B. a function that has an S-shaped curve. Because then the reel can follow the change of the reel limit moment particularly easy. This applies in particular when the control device changes the reel limit moment such that a time derivative of the reel limit moment from the reel start time to a first intermediate time which lies between the reel reel time point and the reel take point increases and decreases from the first interim point to the reel take point.
  • the roller limit torque is a differentiable function of time.
  • it may also have an S-shaped course between the reel reach time and the reel catch time. Because then the drive roller can follow the change of the role limit moment particularly easy.
  • the control device When the controller lowers the reel target speed between the reel king time and the reel catch timing from an initial value to a lowered value, tensile stress peaks in the belt due to the moment of inertia of the reel are further reduced.
  • the control device preferably lowers the reel setpoint speed between the reel start time point and a second intermediate time point continuously to the lowered value and then again increases the reel target speed continuously from the second intermediate time point to the reel catch time point to the original value.
  • the desired reel speed is also preferably a differentiable function of time.
  • it may have a trough-shaped course. This makes the reel easier able to follow the changes in the desired reel speed.
  • the controller steadily lowers the target roll speed prior to the reel pickup timing from a reel start speed such that the desired reel speed reaches an intermediate value at reel pickup time and then maintains the desired reel speed to reel catch time, the reel target speed after the reel catch timing may be lowered more quickly to a final value less than the tape speed is.
  • the control device spreads, starting from a Togethersssp DrILLgrad, the reel from a lying before the reel barrel time Sp Drssenbeginn with a spreading speed.
  • the control device preferably detects a reel spreader level prevailing for the reel catch time and performs the initial spreader, the spreader speed and / or the spreader start in such a way that an approximation of the reel spreader degree to its reel catch time to a desired reel spreader degree is to be expected during the reeling of subsequent belts.
  • FIG. 1 is a reel assembly 1 downstream of a rolling mill.
  • a strip 3 is rolled.
  • the rolled band 3 is running with a belt speed v from the last stand 2 from. It is fed to the reel assembly 1 and reeled there.
  • the reel assembly 1 comprises a reel 4, a drive roller 5 (more precisely: a pair of drive rollers) and a control device 6.
  • the reel 4 has an expandable coiler mandrel 7.
  • the drive roller 5 is arranged upstream of the reel 4. It is thus arranged between the reel 4 and the last rolling stand 2 of the rolling train.
  • the control device 6 controls the reel 4 and the drive roller 5, so specifies their mode of operation and interaction.
  • the control device 6 is preferably designed as a processor-controlled control device 6. It therefore preferably has a processor device 8, which executes a computer program 9. It also has a program memory 10 in which the computer program 9 is stored. Due to the computer program 9, the control device 6 then controls the reel 4 and the drive roller 5 accordingly.
  • the computer program 9 must have been previously supplied to the control device 6.
  • a disk 11 is present -.
  • B. a memory card - on which the computer program 9 is stored.
  • the data carrier 11 is connected via a corresponding interface 12 with the data carrier 11 in terms of data technology. Then the computer program 9 is read from the data carrier 11 and stored in the program memory 10.
  • control device 6 operates the reel 4 and the drive roller 5 in a manner which will be described below in connection with FIGS FIGS. 2 to 10 is explained in more detail.
  • the control device 6 initially sets target values to initial values in a step S1.
  • the initial values are typically from the data of the tape to be wrapped 3 derived or the control device 6 specified by an operator or a parent control computer.
  • control device 6 sets in step S1 - also compare the FIGS. 3 to 6 a reel target speed nH * to an original value nH1, a reel limit torque mH acting in the strip running direction to a reel start torque mH1, a reel set speed nR * to a reel start speed nR1 and a roller limit torque mR acting in the direction of travel of the reel to a reel start torque mR1. Furthermore, it sets a degree of spread g, on which the coiler mandrel 7 is spread, to an initial degree of spread g1.
  • step S2 controls the control device 6 in a step S2 to the reel 4 according to the desired reel speed nH *, the reel limit torque mH and the degree of spread g. Furthermore, as part of step S2, the control device 6 controls the drive roller 5 in accordance with the desired roller speed nR * and the roller limit torque nR.
  • the control device 6 operates so-with the reel 4 and the drive roller 5 speed-controlled and torque-limited.
  • the control device 6 thus regulates the actual rotational speed of the reel 4 and of the drive roller 5 to the respectively preset desired rotational speed nH *, nR *. However, it does so only if this is achievable with an actual moment that remains below the respectively specified limit torque mH, mR.
  • the desired speed values nH *, nR * are determined in such a way that the peripheral speeds of the coiler mandrel 7 and the driving roller 5 are greater than the belt speed v.
  • a step S3 the control device 6 checks whether a Rollenutzzeittician RFZP is reached.
  • the role barrel time RFZP corresponds to the time at which - see also FIG. 7 -
  • the band 3 has arrived at the drive roller 5 and has been taken by the drive roller 5.
  • the Rollenrezzeittician RFZP can be readily determined, since at this time the actual roller speed abruptly on a corresponding to the belt speed v Value decreases and at the same time the actual moment taken up by the drive roller 5 (or its drive) increases abruptly to the roller limit torque mR.
  • the controller 6 If the Rollenjanzeittician RFZP has not been reached, the controller 6 returns to step S2. On the other hand, when the roller barrel timing RFZP is reached (or exceeded), the controller 6 starts to adjust the target roller speed nR * in a step S4. In particular, it first lowers the desired rolling speed nR * according to FIG. 6 steadily decreasing, so that it reaches an intermediate value nR2 at a reel start time HEZP. By contrast, the desired reel speed nH * and the limit torques mH, mR remain unchanged.
  • the reel reach time HEZP corresponds to the time at which the band 3 reaches the reel 4, see also FIG. 9 , It can easily be determined by a simple material tracking.
  • step S5 the control device 6 checks whether the reel recovery time point HEZP has been reached. If the reel timing HEZP has not been reached, the controller 6 returns to step S2. On the other hand, when the reel pickup timing HEZP is reached (or exceeded), the controller 6 also adjusts the reel target rotational speed nH *, the reel limit torque mH and the reel limit torque mR in a step S6 in addition to adjusting the target roller speed nR * in step S4. According to FIG. 5 the controller 6 changes the reel target speed nH *. This will be discussed later. Further, the controller 6 increases according to the 3 and 4 from the reel time HEZP the reel limit torque mH steadily and reduces the role limit torque mR steadily.
  • a step S7 the control device 6 checks whether a spread start SB has been reached.
  • the spread start SB corresponds to the time from which the spreading of the coiler mandrel 7 is started.
  • the spread start SB can - as well as the reel time HEZP - be determined by a simple material tracking. It corresponds approximately to the time at which the reel 4 is surrounded by about one turn of the band 3 - see FIG. 10 , But it lies before a time - hereinafter called reel catch time HFZP - to which the reel 4 of about 4 to 5 turns of the band 3 is surrounded, the reel 4 should therefore hold the band 3 safely.
  • step S8 If the spread start SB has not yet been reached, the control device 6 returns to step S2. If, however, the spread start SB is reached (or exceeded), the control device 6 spreads the reel 4 at a spreading speed g 'in a step S8. It changes the reel spreader degree g accordingly in the context of step S8.
  • step S9 the control device 6 checks whether the reel catch time point HFZP has been reached. If the reel catch time HFZP has not yet been reached, the control device 6 returns to step S2. Otherwise, it continues the operating method according to the invention with a step S10. In step S10, the controller 6 terminates changing the spread degree g and stores this spread degree g.
  • the control device 6 controls the reel 4 and the drive roller 5 in accordance with generally conventional procedures. It therefore outputs the desired reel speed nH * and the reel limit torque mH to the reel 4, the desired roller speed nR * and the roller limit torque mR In particular, it lowers the desired roller speed nR * to a final value nR3 which is less than the belt speed v.
  • a step S12 the control device 6 checks whether the band 3 has been completely rewound. This check can also be performed by means of a simple material tracking. If the tape 3 has not been completely rewound, the control device 6 returns to step S11. On the other hand, if the tape 3 has already been completely rewound, the control device 6 proceeds to a step S13 in which it tracks the initial spreading degree g1, the spreading start SB and / or the spreading speed g '. The tracking takes place in such a way that when reels subsequent belts an approximation of the reel spreader level prevailing to their actual reel catch time is expected to be at a Sollhaspelsp Horgrad. The actual reel catch time is the time at which the actual speed of the reel 4 drops to a value corresponding to the belt speed v.
  • step S14 the control device 6 checks whether the operating method according to the invention should now be terminated. If this is the case, it naturally terminates the further processing of the computer program 9. Otherwise, the control device 6 waits in a step S15 for the next tape 3 to be rewound and then returns to step S1.
  • the control device 6 increases the reel limit torque mH after the reel recovery time HEZP of a reel start torque mH1 steadily, so that the reel limit torque mH to the reel catch time HFZP reaches a reel end torque mH2.
  • the reel limit moment mH is according to FIG. 3 can be seen a differentiable function of the time t.
  • the reel limit moment mH has according to FIG. 3 an S-shaped course.
  • control device 6 changes the reel limit torque mH such that a time derivation of the reel limit torque mH increases from the reel recovery time HEZP to a first intermediate time ZZP1 and then drops again to the reel catch time HFZP.
  • the first intermediate time ZZP1 is evident here between the reel-rich time HEZP and the reel catch time HFZP.
  • FIG. 4 It can be seen that the control device 6 steadily lowers the roller limit torque mR after the reel recovery time HEZP from the reel start torque mR1, so that the reel limit torque mR to the reel catch time HFZP reaches a reel end torque mR2. On the other hand, the roll end torque mR2 is retained from the roller barrel time point HFZP.
  • the roll limit moment mR is preferably a differentiable function of the time t.
  • the roll limit moment mR, as in FIG. 4 represented between the reel rich time HEZP and the reel catch time HFZP also have an S-shaped course.
  • the control device 6 lowers the desired reel speed nH * between the reel start time HEZP and the reel catch point HFZP from the original value nH1 to a lowered value nH2.
  • the lowering takes place steadily up to a second intermediate time ZZP2, which is also between the reel rich time HEZP and the reel catch time HFZP.
  • the reel target speed nH * is steadily increased back to the original value nH1.
  • the reel target speed nH * is also preferably a differentiable function of the time t.
  • it can, as in FIG. 5 shown, have a trough-shaped course.
  • the desired rolling speed nR * is also a differentiable function of the time t.
  • it can according to FIG. 6 consist of two sections 13, 14, each having an S-shaped curve and merge into each other in the area between the reel rich time HEZP and the reel catch time HFZP.

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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)
  • Replacement Of Web Rolls (AREA)
  • Toys (AREA)
  • Blinds (AREA)

Abstract

The invention relates to a coiling arrangement (1), for coiling a strip (3), comprising at least one coiler (4), a drive roller (5), arranged before the coiler (4) and a controller (6) for the coiler (4) and the drive roller (5). The drive roller (5) takes up the strip (3) at a roller take-up time (RFZP) and then supplies the same to the coiler (4). The strip (3) reaches the coiler (4) at a coiler arrival time (HEZP). The controller (6) provides the coiler (4) with a coiler set speed (nH*) and a coiler torque limit (mH) acting in the strip running direction such that the controller (6) operates the coiler (4) with speed and torque control. The controller also provides the drive roller (5) with a roller set speed (nR*) and roller torque limit (mR), acting in the strip running direction, such that the controller (6) also operates the drive roller (5) with speed and torque control. The controller (6) steadily increases the coiler torque limit (mH) after the coiler arrival time (HEZP) from a coiler initial torque (mHl), such that the coiler torque limit (mH) reaches a coiler final torque (mH2) at a coiler take-up time (HFZP). The roller torque limit (mR) is simultaneously steadily reduced from a roller initial torque (mRl) such that the roller torque limit (mR) reaches a roller final torque (mR2) at the coiler take-up time (HFZP).

Description

Die vorliegende Erfindung betrifft ein Betriebsverfahren für eine Haspelanordnung zum Aufhaspeln eines Bandes, die zumindest einen Haspel, eine dem Haspel vorgeordnete Treibrolle und eine Steuereinrichtung für den Haspel und die Treibrolle aufweist.The present invention relates to an operating method for a reel assembly for reeling a tape, comprising at least one reel, a drive roller arranged in front of the reel and a control device for the reel and the drive roller.

Die vorliegende Erfindung betrifft weiterhin einen Datenträger, auf dem ein Computerprogramm für eine Steuereinrichtung zur Durchführung eines derartigen Betriebsverfahrens gespeichert ist. Ferner betrifft die vorliegende Erfindung eine Steuereinrichtung für eine Haspelanordnung der eingangs genannten Art und eine solche Haspelanordnung selbst.The present invention further relates to a data carrier on which a computer program for a control device for carrying out such an operating method is stored. Furthermore, the present invention relates to a control device for a reel assembly of the type mentioned and such a reel assembly itself.

Haspelanordnungen zum Aufhaspeln eines Bandes und Betriebsverfahren für derartige Haspelanordnungen sind allgemein bekannt. Insbesondere fasst bei der bekannten Haspelanordnung die Treibrolle das Band zu einem Zeitpunkt, der nachfolgend zur Unterscheidung von anderen Zeitpunkten Rollenfasszeitpunkt genannt wird, und führt es sodann mit einer Bandgeschwindigkeit dem Haspel zu. Das Band erreicht den Haspel zu einem Zeitpunkt, der zur Unterscheidung von anderen Zeitpunkten nachfolgend Haspelerreichzeitpunkt genannt wird. Im Gegensatz zur Treibrolle fasst der Haspel das Band zu diesem Zeitpunkt aber noch nicht. Dies geschieht erst zu einem späteren Zeitpunkt, der nachfolgend zur Unterscheidung von anderen Zeitpunkten tatsächlicher Haspelfasszeitpunkt genannt wird.Reel assemblies for coiling a tape and method of operation for such reel assemblies are well known. In particular, in the known reel assembly, the driving roller grips the belt at a time which is referred to below to distinguish other times Rollenfasszeitpunkt, and then leads it to the reel with a belt speed. The belt reaches the reel at a point in time called the rewind time point to distinguish it from other times. In contrast to the capstan, the reel does not yet grasp the band at this time. This happens only at a later time, which is referred to below to differentiate from other times actual barrel maturity date.

An den Haspel gibt die Steuereinrichtung eine Haspelsolldrehzahl und ein in Bandlaufrichtung wirkendes Haspelgrenzmoment aus, so dass die Steuereinrichtung den Haspel drehzahlgeregelt und momentenbegrenzt betreibt. Ebenso gibt die Steuereinrichtung an die Treibrolle eine Rollensolldrehzahl und ein in Bandlaufrichtung wirkendes Rollengrenzmoment aus, so dass die Steuereinrichtung auch die Treibrolle drehzahlgeregelt und momentenbegrenzt betreibt.At the reel, the control device outputs a reel setpoint speed and a reel limit moment acting in the direction of travel of the reel, so that the control device operates the reel in a speed-controlled and torque-limited manner. Likewise, the controller gives the roller a desired roller speed and a Roll limit torque acting in the strip running direction, so that the control device also operates the drive roller in a speed-controlled manner and with limited torque.

Im Stand der Technik sind die Haspelsolldrehzahl und die Rollensolldrehzahl derart bestimmt, dass sowohl der Haspel als auch die Treibrolle gegenüber dem Band voreilen. Diese Vorgehensweise ist zwingend erforderlich und wird auch im Rahmen der vorliegenden Erfindung beibehalten.In the prior art, the reel target speed and the desired roller speed are determined such that both the reel and the drive roller lead the belt. This procedure is absolutely necessary and is also retained in the context of the present invention.

Das Haspelgrenzmoment wird im Stand der Technik bereits vor dem Haspelerreichzeitpunkt, meist sogar vor dem Rollenfasszeitpunkt, auf ein Haspelendmoment gesetzt, das bis zum Haspelfasszeitpunkt konstant beibehalten wird. Danach wird das Haspelgrenzmoment derart variiert, dass der auf das Band ausgeübte Zug konstant ist. Das Rollengrenzmoment wird im Stand der Technik vor dem Rollenfasszeitpunkt auf ein Rollenanfangsmoment gesetzt und bis zum Haspelfasszeitpunkt konstant beibehalten.The reel limit torque is set in the prior art even before the reel king time, usually even before the Rollenfasszeitpunkt, to a reel end torque, which is maintained constant until the reel catch time. Thereafter, the reel limit moment is varied so that the tension applied to the tape is constant. The role limit torque is set in the prior art before the Rollenfasszeitpunkt to a roll start torque and maintained constant until the reel catch time.

Die Vorgehensweise des Standes der Technik führt dazu, dass zu Beginn des Aufhaspelns im Band ein erhöhter Zug auftritt. Der erhöhte Zug kann dabei so groß sein, dass er die Streckgrenze des Bandes übersteigt, also zu plastischen Formveränderungen (Einschnürungen) des Bandes führt. Die Dicke und insbesondere auch die Breite des aufzuhaspelnden Bandes werden daher plastisch geändert. Die Dicke und die Breite des Bandes stellen aber entscheidende Qualitätsparameter dar, die somit negativ beeinflusst werden.The procedure of the prior art results in that at the beginning of the coiling in the band, an increased train occurs. The increased tension can be so great that it exceeds the yield strength of the band, thus leading to plastic deformations (constrictions) of the band. The thickness and in particular the width of the tape to be reeled up are therefore changed plastically. However, the thickness and the width of the band represent crucial quality parameters, which are thus adversely affected.

Im Stand der Technik werden die Qualitätseinbußen bzw. wird die Gefahr einer Qualitätseinbuße schlichtweg in Kauf genommen. Es wird lediglich versucht, die Qualitätseinbuße bzw. die Gefahr einer Qualitätseinbuße durch entsprechende Vorgabe der Solldrehzahlen und der Grenzmomente zu minimieren.In the prior art, the quality losses or the risk of a loss of quality is simply accepted. It is merely an attempt to minimize the loss of quality or the risk of a loss of quality by appropriate specification of the desired speeds and the limit moments.

Die JP 58163524 A offenbart eine Haspelanordnung und ein Betriebs-Verfahren zum Anfhaspeln eine Bandes.The JP 58163524 A discloses a reel assembly and an operating method for winding a tape.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine Möglichkeit zu schaffen, die Qualitätseinbußen bzw. die Gefahr einer Qualitätseinbuße deutlich zu verringern, möglichst sogar zu eliminieren.The object of the present invention is to provide a possibility, the loss of quality or the risk To significantly reduce a loss of quality, if possible even eliminate it.

Die Aufgabe wird für ein Betriebsverfahren der eingangs genannten Art dadurch gelöst, dass die Steuereinrichtung

  • das Haspelgrenzmoment nach dem Haspelerreichzeitpunkt von einem Haspelanfangsmoment stetig erhöht, so dass das Haspelgrenzmoment zu einem Haspelfasszeitpunkt ein Haspelendmoment erreicht, und
  • das Rollengrenzmoment nach dem Haspelerreichzeitpunkt von einem Rollenanfangsmoment stetig absenkt, so dass das Rollengrenzmoment zum Haspelfasszeitpunkt ein Rollenendmoment erreicht.
The object is achieved for an operating method of the type mentioned in that the control device
  • the reel limit moment is increased continuously after the reel start time from a reel start torque, so that the reel limit moment reaches a reel end moment at a reel take time, and
  • the roll limit torque steadily lowers after a reel start time from a roll start torque, so that the roll limit moment at the reel take-up time reaches a roll end torque.

Denn durch dieses feinfühlige, gegenläufige Ändern der Grenzmomente bereits ab dem Haspelerreichzeitpunkt kann der im Band herrschende Zug unter die Streckgrenze des Bandes reduziert werden, ohne die Zuverlässigkeit und Betriebssicherheit beim Anhaspeln des Bandes zu beeinträchtigen. Der Haspelfasszeitpunkt ist dabei ein rechnerisch ermittelter Wert, zu dem der Haspel das Band gefasst haben sollte. Es kann von dem Zeitpunkt, zu dem der Haspel das Band tatsächlich fasst, abweichen.Because of this sensitive, opposite change of the limit moments already from the reel kingdom time of the prevailing tension in the band can be reduced below the yield strength of the tape, without affecting the reliability and reliability during coiling of the tape. The reel catch time is a mathematically determined value at which the reel should have taken the tape. It may differ from the time the reel actually holds the tape.

Hiermit korrespondierend wird die Aufgabe für den Datenträger dadurch gelöst, dass auf ihm ein Computerprogramm für eine Steuereinrichtung zur Durchführung eines solchen Betriebsverfahrens gespeichert ist.Correspondingly, the task for the data carrier is achieved in that a computer program for a control device for carrying out such an operating method is stored on it.

Für die Steuereinrichtung wird die Aufgabe dadurch gelöst, dass sie derart ausgebildet ist, dass sie den Haspel und die Treibrolle gemäß einem derartigen Betriebsverfahren betreibt. Insbesondere kann die Steuereinrichtung hierzu einen Programmspeicher aufweisen, in dem ein Computerprogramm für die Steuereinrichtung hinterlegt ist, und die Steuereinrichtung den Haspel und die Treibrolle auf Grund des Computerprogramms erfindungsgemäß betreiben.For the control device, the object is achieved in that it is designed such that it operates the reel and the drive roller according to such an operating method. In particular, the control device can for this purpose have a program memory in which a computer program for the control device is stored, and the control device operate the reel and the drive roller according to the invention on the basis of the computer program.

Für die Haspelanordnung schließlich wird die Aufgabe dadurch gelöst, dass sie eine entsprechend ausgebildete Steuereinrichtung aufweist.Finally, for the reel assembly, the object is achieved in that it has a correspondingly designed control device.

Vorzugsweise ist das Haspelgrenzmoment eine differenzierbare Funktion der Zeit, z. B. eine Funktion, die einen S-förmigen Verlauf aufweist. Denn dann kann der Haspel der Änderung des Haspelgrenzmoments besonders einfach folgen. Dies gilt insbesondere dann, wenn die Steuereinrichtung das Haspelgrenzmoment derart ändert, dass eine zeitliche Ableitung des Haspelgrenzmoments vom Haspelerreichzeitpunkt bis zu einem ersten Zwischenzeitpunkt, der zwischen dem Haspelerreichzeitpunkt und dem Haspelfasszeitpunkt liegt, ansteigt und vom ersten Zwischenzeitpunkt bis zum Haspelfasszeitpunkt absinkt.Preferably, the reel limit moment is a differentiable function of time, e.g. B. a function that has an S-shaped curve. Because then the reel can follow the change of the reel limit moment particularly easy. This applies in particular when the control device changes the reel limit moment such that a time derivative of the reel limit moment from the reel start time to a first intermediate time which lies between the reel reel time point and the reel take point increases and decreases from the first interim point to the reel take point.

Vorzugsweise ist auch das Rollengrenzmoment eine differenzierbare Funktion der Zeit. Beispielsweise kann auch sie zwischen dem Haspelerreichzeitpunkt und dem Haspelfasszeitpunkt einen S-förmigen Verlauf aufweisen. Denn dann kann die Treibrolle der Änderung des Rollengrenzmoments besonders einfach folgen.Preferably, the roller limit torque is a differentiable function of time. For example, it may also have an S-shaped course between the reel reach time and the reel catch time. Because then the drive roller can follow the change of the role limit moment particularly easy.

Wenn die Steuereinrichtung die Haspelsolldrehzahl zwischen dem Haspelerreichzeitpunkt und dem Haspelfasszeitpunkt von einem ursprünglichen Wert auf einen erniedrigten Wert absenkt, werden auf Grund des Trägheitsmoments des Haspels verursachte Zugspannungsspitzen im Band noch weiter reduziert. Vorzugsweise senkt hierzu die Steuereinrichtung die Haspelsolldrehzahl zwischen dem Haspelerreichzeitpunkt und einem zweiten Zwischenzeitpunkt stetig auf den erniedrigten Wert ab und erhöht dann die Haspelsolldrehzahl vom zweiten Zwischenzeitpunkt zum Haspelfasszeitpunkt wieder stetig auf den ursprünglichen Wert.When the controller lowers the reel target speed between the reel king time and the reel catch timing from an initial value to a lowered value, tensile stress peaks in the belt due to the moment of inertia of the reel are further reduced. For this purpose, the control device preferably lowers the reel setpoint speed between the reel start time point and a second intermediate time point continuously to the lowered value and then again increases the reel target speed continuously from the second intermediate time point to the reel catch time point to the original value.

Auch die Haspelsolldrehzahl ist vorzugsweise eine differenzierbare Funktion der Zeit. Beispielsweise kann sie einen muldenförmigen Verlauf aufweisen. Dadurch ist der Haspel einfacher in der Lage, den Änderungen der Haspelsolldrehzahl zu folgen.The desired reel speed is also preferably a differentiable function of time. For example, it may have a trough-shaped course. This makes the reel easier able to follow the changes in the desired reel speed.

Wenn die Steuereinrichtung die Rollensolldrehzahl bereits vor dem Haspelerreichzeitpunkt von einer Rollenanfangsdrehzahl stetig absenkt, so dass die Rollensolldrehzahl zum Haspelerreichzeitpunkt einen Zwischenwert erreicht, und die Rollensolldrehzahl sodann bis zum Haspelfasszeitpunkt beibehält, kann die Rollensolldrehzahl nach dem Haspelfasszeitpunkt schneller auf einen Endwert abgesenkt werden, der kleiner als die Bandgeschwindigkeit ist.If the controller steadily lowers the target roll speed prior to the reel pickup timing from a reel start speed such that the desired reel speed reaches an intermediate value at reel pickup time and then maintains the desired reel speed to reel catch time, the reel target speed after the reel catch timing may be lowered more quickly to a final value less than the tape speed is.

In aller Regel spreizt die Steuereinrichtung, ausgehend von einem Anfangsspreizgrad, den Haspel ab einem vor dem Haspelfasszeitpunkt liegenden Spreizbeginn mit einer Spreizgeschwindigkeit auf. Vorzugsweise erfasst die Steuereinrichtung einen zum Haspelfasszeitpunkt herrschenden Haspelspreizgrad und führt den Anfangsspreizgrad, die Spreizgeschwindigkeit und/oder den Spreizbeginn derart nach, dass beim Aufhaspeln nachfolgender Bänder eine Annäherung des zu deren Haspelfasszeitpunkt herrschenden Haspelspreizgrades an einen Sollhaspelspreizgrad zu erwarten ist.As a rule, the control device spreads, starting from a Anfangssspreizgrad, the reel from a lying before the reel barrel time Spreizbeginn with a spreading speed. The control device preferably detects a reel spreader level prevailing for the reel catch time and performs the initial spreader, the spreader speed and / or the spreader start in such a way that an approximation of the reel spreader degree to its reel catch time to a desired reel spreader degree is to be expected during the reeling of subsequent belts.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels in Verbindung mit den Zeichnungen. Dabei zeigen in Prinzipdarstellung:

FIG 1
ein Blockschaltbild einer Haspelanordnung,
FIG 2
ein Ablaufdiagramm,
FIG 3 und 4
Moment-Zeit-Diagramme und
FIG 5 und 6
Drehzahl-Zeit-Diagramme,
FIG 7 bis 10
die Haspelanordnung von FIG 1 zu verschiedenen Zeitpunkten.
Further advantages and details emerge from the following description of an embodiment in conjunction with the drawings. Here are a schematic diagram:
FIG. 1
a block diagram of a reel assembly,
FIG. 2
a flow chart,
3 and 4
Moment-time diagrams and
FIGS. 5 and 6
Speed-time charts,
FIGS. 7 to 10
the reel arrangement of FIG. 1 at different times.

Gemäß FIG 1 ist eine Haspelanordnung 1 einer Walzstraße nachgeordnet. In FIG 1 ist dabei der Übersichtlichkeit halber nur das letzte Walzgerüst 2 der Walzstraße dargestellt. In der Walzstraße wird ein Band 3 gewalzt. Das gewalzte Band 3 läuft mit einer Bandgeschwindigkeit v aus dem letzten Walzgerüst 2 aus. Es wird der Haspelanordnung 1 zugeführt und dort aufgehaspelt.According to FIG. 1 is a reel assembly 1 downstream of a rolling mill. In FIG. 1 For the sake of clarity, only the last roll stand 2 of the rolling train is shown. In the rolling mill, a strip 3 is rolled. The rolled band 3 is running with a belt speed v from the last stand 2 from. It is fed to the reel assembly 1 and reeled there.

Die Haspelanordnung 1 weist einen Haspel 4, eine Treibrolle 5 (genauer: ein Treibrollenpaar) und eine Steuereinrichtung 6 auf. Der Haspel 4 weist einen aufspreizbaren Haspeldorn 7 auf. Die Treibrolle 5 ist dem Haspel 4 vorgeordnet. Sie ist also zwischen dem Haspel 4 und dem letzten Walzgerüst 2 der Walzstraße angeordnet. Die Steuereinrichtung 6 steuert den Haspel 4 und die Treibrolle 5 an, legt also deren Betriebsweise und Zusammenwirken fest.The reel assembly 1 comprises a reel 4, a drive roller 5 (more precisely: a pair of drive rollers) and a control device 6. The reel 4 has an expandable coiler mandrel 7. The drive roller 5 is arranged upstream of the reel 4. It is thus arranged between the reel 4 and the last rolling stand 2 of the rolling train. The control device 6 controls the reel 4 and the drive roller 5, so specifies their mode of operation and interaction.

Die Steuereinrichtung 6 ist vorzugsweise als prozessorgesteuerte Steuereinrichtung 6 ausgebildet. Sie weist also bevorzugt eine Prozessoreinrichtung 8 auf, die ein Computerprogramm 9 abarbeitet. Sie weist ferner einen Programmspeicher 10 auf, in dem das Computerprogramm 9 hinterlegt ist. Auf Grund des Computerprogramms 9 steuert die Steuereinrichtung 6 den Haspel 4 und die Treibrolle 5 dann entsprechend an.The control device 6 is preferably designed as a processor-controlled control device 6. It therefore preferably has a processor device 8, which executes a computer program 9. It also has a program memory 10 in which the computer program 9 is stored. Due to the computer program 9, the control device 6 then controls the reel 4 and the drive roller 5 accordingly.

Das Computerprogramm 9 muss der Steuereinrichtung 6 selbstverständlich zuvor zugeführt worden sein. Hierfür ist ein Datenträger 11 vorhanden - z. B. eine Speicherkarte -, auf dem das Computerprogramm 9 gespeichert ist. Der Datenträger 11 wird über eine entsprechende Schnittstelle 12 mit dem Datenträger 11 datentechnisch verbunden. Sodann wird das Computerprogramm 9 aus dem Datenträger 11 ausgelesen und im Programmspeicher 10 hinterlegt.Of course, the computer program 9 must have been previously supplied to the control device 6. For this purpose, a disk 11 is present -. B. a memory card - on which the computer program 9 is stored. The data carrier 11 is connected via a corresponding interface 12 with the data carrier 11 in terms of data technology. Then the computer program 9 is read from the data carrier 11 and stored in the program memory 10.

Auf Grund des Computerprogramms 9 betreibt die Steuereinrichtung 6 den Haspel 4 und die Treibrolle 5 auf eine Weise, die nachfolgend in Verbindung mit den FIG 2 bis 10 näher erläutert wird.Due to the computer program 9, the control device 6 operates the reel 4 and the drive roller 5 in a manner which will be described below in connection with FIGS FIGS. 2 to 10 is explained in more detail.

Gemäß FIG 2 setzt die Steuereinrichtung 6 zunächst in einem Schritt S1 Sollwerte auf Anfangswerte. Die Anfangswerte werden dabei typischerweise aus den Daten des zu wickelnden Bandes 3 abgeleitet oder der Steuereinrichtung 6 von einer Bedienperson oder einem übergeordneten Leitrechner vorgegeben.According to FIG. 2 The control device 6 initially sets target values to initial values in a step S1. The initial values are typically from the data of the tape to be wrapped 3 derived or the control device 6 specified by an operator or a parent control computer.

Insbesondere setzt die Steuereinrichtung 6 im Schritt S1 - vergleiche auch die FIG 3 bis 6 - eine Haspelsolldrehzahl nH* auf einen ursprünglichen Wert nH1, ein in Bandlaufrichtung wirkendes Haspelgrenzmoment mH auf eine Haspelanfangsmoment mH1, eine Rollensolldrehzahl nR* auf eine Rollenanfangsdrehzahl nR1 und ein in Bandlaufrichtung wirkendes Rollengrenzmoment mR auf ein Rollenanfangsmoment mR1. Weiterhin stellt sie einen Spreizgrad g, auf den der Haspeldorn 7 aufgespreizt wird, auf einen Anfangsspreizgrad g1 ein.In particular, the control device 6 sets in step S1 - also compare the FIGS. 3 to 6 a reel target speed nH * to an original value nH1, a reel limit torque mH acting in the strip running direction to a reel start torque mH1, a reel set speed nR * to a reel start speed nR1 and a roller limit torque mR acting in the direction of travel of the reel to a reel start torque mR1. Furthermore, it sets a degree of spread g, on which the coiler mandrel 7 is spread, to an initial degree of spread g1.

Sodann steuert die Steuereinrichtung 6 in einem Schritt S2 den Haspel 4 entsprechend der Haspelsolldrehzahl nH*, dem Haspelgrenzmoment mH und dem Spreizgrad g an. Weiterhin steuert die Steuereinrichtung 6 im Rahmen des Schrittes S2 die Treibrolle 5 entsprechend der Rollensolldrehzahl nR* und dem Rollengrenzmoment nR an. Die Steuereinrichtung 6 betreibt so-mit den Haspel 4 und die Treibrolle 5 drehzahlgeregelt und momentenbegrenzt. Die Steuereinrichtung 6 regelt die Istdrehzahl des Haspels 4 und der Treibrolle 5 also auf die jeweils vorgegebene Solldrehzahl nH*, nR*. Sie tut dies aber nur, wenn dies mit einem Istmoment erreichbar ist, das unterhalb des jeweils vorgegebenen Grenzmoments mH, mR bleibt. Der Vollständigkeit halber sei dabei erwähnt, dass die Drehzahlsollwerte nH*, nR* derart bestimmt sind, dass die Umfangsgeschwindigkeiten des Haspeldorns 7 und der Treibrolle 5 größer als die Bandgeschwindigkeit v sind.Then controls the control device 6 in a step S2 to the reel 4 according to the desired reel speed nH *, the reel limit torque mH and the degree of spread g. Furthermore, as part of step S2, the control device 6 controls the drive roller 5 in accordance with the desired roller speed nR * and the roller limit torque nR. The control device 6 operates so-with the reel 4 and the drive roller 5 speed-controlled and torque-limited. The control device 6 thus regulates the actual rotational speed of the reel 4 and of the drive roller 5 to the respectively preset desired rotational speed nH *, nR *. However, it does so only if this is achievable with an actual moment that remains below the respectively specified limit torque mH, mR. For the sake of completeness, it should be mentioned that the desired speed values nH *, nR * are determined in such a way that the peripheral speeds of the coiler mandrel 7 and the driving roller 5 are greater than the belt speed v.

In einem Schritt S3 prüft die Steuereinrichtung 6, ob ein Rollenfasszeitpunkt RFZP erreicht ist. Der Rollenfasszeitpunkt RFZP entspricht dabei dem Zeitpunkt, zu dem - siehe auch FIG 7 - das Band 3 an der Treibrolle 5 angelangt ist und von der Treibrolle 5 gefasst worden ist. Der Rollenfasszeitpunkt RFZP kann dabei ohne weiteres ermittelt werden, da zu diesem Zeitpunkt die tatsächliche Rollendrehzahl schlagartig auf einen mit der Bandgeschwindigkeit v korrespondierenden Wert absinkt und gleichzeitig das von der Treibrolle 5 (bzw. deren Antrieb) aufgenommene tatsächliche Moment schlagartig auf das Rollengrenzmoment mR ansteigt.In a step S3, the control device 6 checks whether a Rollenfasszeitpunkt RFZP is reached. The role barrel time RFZP corresponds to the time at which - see also FIG. 7 - The band 3 has arrived at the drive roller 5 and has been taken by the drive roller 5. The Rollenfasszeitpunkt RFZP can be readily determined, since at this time the actual roller speed abruptly on a corresponding to the belt speed v Value decreases and at the same time the actual moment taken up by the drive roller 5 (or its drive) increases abruptly to the roller limit torque mR.

Ab dem Rollenfasszeitpunkt RFZP übt die Treibrolle 5 Zug auf das Band 3 auf, treibt es also im Sinne des Wortes und führt es somit dem Haspel 4 zu. Dieser Zustand ist in FIG 8 dargestellt.From the Rollenfasszeitpunkt RFZP the drive roller 5 pull train on the tape 3, so it drives in the sense of the word and thus leads it to the reel 4. This condition is in FIG. 8 shown.

Wenn der Rollenfasszeitpunkt RFZP noch nicht erreicht ist, geht die Steuereinrichtung 6 zum Schritt S2 zurück. Wenn der Rollenfasszeitpunkt RFZP hingegen erreicht (oder überschritten) ist, beginnt die Steuereinrichtung 6 in einem Schritt S4 damit, die Rollensolldrehzahl nR* anzupassen. Insbesondere senkt sie zunächst die Rollensolldrehzahl nR* gemäß FIG 6 stetig ab, so dass sie zu einem Haspelerreichzeitpunkt HEZP einen Zwischenwert nR2 erreicht. Die Haspelsolldrehzahl nH* und die Grenzmomente mH, mR bleiben hingegen noch unverändert. Der Haspelerreichzeitpunkt HEZP entspricht dem Zeitpunkt, zu dem das Band 3 den Haspel 4 erreicht, siehe auch FIG 9. Er kann ohne weiteres anhand einer einfachen Materialverfolgung ermittelt werden.If the Rollenfasszeitpunkt RFZP has not been reached, the controller 6 returns to step S2. On the other hand, when the roller barrel timing RFZP is reached (or exceeded), the controller 6 starts to adjust the target roller speed nR * in a step S4. In particular, it first lowers the desired rolling speed nR * according to FIG. 6 steadily decreasing, so that it reaches an intermediate value nR2 at a reel start time HEZP. By contrast, the desired reel speed nH * and the limit torques mH, mR remain unchanged. The reel reach time HEZP corresponds to the time at which the band 3 reaches the reel 4, see also FIG. 9 , It can easily be determined by a simple material tracking.

In einem Schritt S5 prüft die Steuereinrichtung 6, ob der Haspelerreichzeitpunkt HEZP erreicht ist. Wenn der Haspelerreichzeitpunkt HEZP noch nicht erreicht ist, geht die Steuereinrichtung 6 zum Schritt S2 zurück. Wenn der Haspelerreichzeitpunkt HEZP hingegen erreicht (oder überschritten) ist, passt die Steuereinrichtung 6 - zusätzlich zur Anpassung der Rollensolldrehzahl nR* im Schritt S4 - in einem Schritt S6 auch die Haspelsolldrehzahl nH*, das Haspelgrenzmoment mH und das Rollengrenzmoment mR an. Gemäß FIG 5 ändert die Steuereinrichtung 6 die Haspelsolldrehzahl nH*. Hierauf wird später noch näher eingegangen. Ferner erhöht die Steuereinrichtung 6 gemäß den FIG 3 und 4 ab dem Haspelerreichzeitpunkt HEZP das Haspelgrenzmoment mH stetig und senkt das Rollengrenzmoment mR stetig ab. Das Erhöhen des Haspelgrenzmoments mH und das Absenken des Rollengrenzmoments.können dabei derart aufeinander abgestimmt sein, dass die Summe der Grenzmomente mH, mR konstant ist. Die Rollensolldrehzahl nR* wird hingegen nicht weiter verändert, sondern auf dem Zwischenwert nR2 gehalten, den die Rollensolldrehzahl nR* zum Haspelerreichzeitpunkt HEZP erreicht hat.In a step S5, the control device 6 checks whether the reel recovery time point HEZP has been reached. If the reel timing HEZP has not been reached, the controller 6 returns to step S2. On the other hand, when the reel pickup timing HEZP is reached (or exceeded), the controller 6 also adjusts the reel target rotational speed nH *, the reel limit torque mH and the reel limit torque mR in a step S6 in addition to adjusting the target roller speed nR * in step S4. According to FIG. 5 the controller 6 changes the reel target speed nH *. This will be discussed later. Further, the controller 6 increases according to the 3 and 4 from the reel time HEZP the reel limit torque mH steadily and reduces the role limit torque mR steadily. Increase of the reel limit torque mH and lowering of the roll limit torque can thereby be superposed on each other Be agreed that the sum of the limit moments mH, mR is constant. On the other hand, the target roll speed nR * is not further changed, but kept at the intermediate value nR2 which the target roll speed nR * has reached at the reel rich time point HEZP.

In einem Schritt S7 prüft die Steuereinrichtung 6, ob ein Spreizbeginn SB erreicht ist. Der Spreizbeginn SB entspricht dem Zeitpunkt, ab dem mit dem Aufspreizen des Haspeldorns 7 begonnen wird. Der Spreizbeginn SB kann - ebenso wie der Haspelerreichzeitpunkt HEZP - anhand einer einfachen Materialverfolgung bestimmt werden. Er entspricht in etwa dem Zeitpunkt, zu dem der den Haspel 4 von ca. einer Windung des Bandes 3 umgeben ist - siehe FIG 10. Er liegt aber vor einem Zeitpunkt - nachfolgend Haspelfasszeitpunkt HFZP genannt - zu dem der Haspel 4 von ca. 4 bis 5 Windungen des Bandes 3 umgeben ist, der Haspel 4 also das Band 3 sicher fassen sollte.In a step S7, the control device 6 checks whether a spread start SB has been reached. The spread start SB corresponds to the time from which the spreading of the coiler mandrel 7 is started. The spread start SB can - as well as the reel time HEZP - be determined by a simple material tracking. It corresponds approximately to the time at which the reel 4 is surrounded by about one turn of the band 3 - see FIG. 10 , But it lies before a time - hereinafter called reel catch time HFZP - to which the reel 4 of about 4 to 5 turns of the band 3 is surrounded, the reel 4 should therefore hold the band 3 safely.

Wenn der Spreizbeginn SB noch nicht erreicht ist, geht die Steuereinrichtung 6 zum Schritt S2 zurück. Wenn der Spreizbeginn SB hingegen erreicht (oder überschritten) ist, spreizt die Steuereinrichtung 6 in einem Schritt S8 den Haspel 4 mit einer Spreizgeschwindigkeit g' auf. Sie ändert den Haspelspreizgrad g also im Rahmen des Schrittes S8 entsprechend.If the spread start SB has not yet been reached, the control device 6 returns to step S2. If, however, the spread start SB is reached (or exceeded), the control device 6 spreads the reel 4 at a spreading speed g 'in a step S8. It changes the reel spreader degree g accordingly in the context of step S8.

In einem Schritt S9 prüft die Steuereinrichtung 6, ob der Haspelfasszeitpunkt HFZP erreicht ist. Ist der Haspelfasszeitpunkt HFZP noch nicht erreicht, geht die Steuereinrichtung 6 zum Schritt S2 zurück. Anderenfalls setzt sie das erfindungsgemäße Betriebsverfahren mit einem Schritt S10 fort. Im Schritt S10 beendet die Steuereinrichtung 6 das Ändern des Spreizgrades g und speichert diesen Spreizgrad g.In a step S9, the control device 6 checks whether the reel catch time point HFZP has been reached. If the reel catch time HFZP has not yet been reached, the control device 6 returns to step S2. Otherwise, it continues the operating method according to the invention with a step S10. In step S10, the controller 6 terminates changing the spread degree g and stores this spread degree g.

Im Rahmen eines Schrittes S11 steuert die Steuereinrichtung 6 den Haspel 4 und die Treibrolle 5 entsprechend allgemein üblicher Vorgehensweisen an. Sie gibt also die Haspelsolldrehzahl nH* und das Haspelgrenzmoment mH an den Haspel 4 aus, die Rollensolldrehzahl nR* und das Rollengrenzmoment mR an die Treibrolle 5. Insbesondere senkt sie die Rollensolldrehzahl nR* auf einen Endwert nR3 ab, der kleiner als die Bandgeschwindigkeit v ist.As part of a step S11, the control device 6 controls the reel 4 and the drive roller 5 in accordance with generally conventional procedures. It therefore outputs the desired reel speed nH * and the reel limit torque mH to the reel 4, the desired roller speed nR * and the roller limit torque mR In particular, it lowers the desired roller speed nR * to a final value nR3 which is less than the belt speed v.

In einem Schritt S12 prüft die Steuereinrichtung 6, ob das Band 3 vollständig aufgehaspelt ist. Auch diese Prüfung kann anhand einer einfachen Materialverfolgung vorgenommen werden. Ist das Band 3 noch nicht vollständig aufgehaspelt, geht die Steuereinrichtung 6 zum Schritt S11 zurück. Ist das Band 3 hingegen bereits vollständig aufgehaspelt, geht die Steuereinrichtung 6 zu einem Schritt S13 über, in dem sie den Anfangsspreizgrad g1, den Spreizbeginn SB und/oder die Spreizgeschwindigkeit g' nachführt. Das Nachführen erfolgt dabei derart, dass beim Aufhaspeln nachfolgender Bänder eine Annäherung des zu deren tatsächlichen Haspelfasszeitpunkt herrschenden Haspelspreizgrades an einen Sollhaspelspreizgrad zu erwarten ist. Der tatsächliche Haspelfasszeitpunkt ist dabei der Zeitpunkt, zu dem die Istdrehzahl des Haspels 4 auf einen mit der Bandgeschwindigkeit v korrespondierenden Wert absinkt.In a step S12, the control device 6 checks whether the band 3 has been completely rewound. This check can also be performed by means of a simple material tracking. If the tape 3 has not been completely rewound, the control device 6 returns to step S11. On the other hand, if the tape 3 has already been completely rewound, the control device 6 proceeds to a step S13 in which it tracks the initial spreading degree g1, the spreading start SB and / or the spreading speed g '. The tracking takes place in such a way that when reels subsequent belts an approximation of the reel spreader level prevailing to their actual reel catch time is expected to be at a Sollhaspelspreizgrad. The actual reel catch time is the time at which the actual speed of the reel 4 drops to a value corresponding to the belt speed v.

In einem Schritt S14 prüft die Steuereinrichtung 6, ob das erfindungsgemäße Betriebsverfahren nunmehr beendet werden soll. Wenn dies der Fall ist, beendet sie selbstverständlich die weitere Abarbeitung des Computerprogramms 9. Anderenfalls wartet die Steuereinrichtung 6 in einem Schritt S15 das nächste aufzuhaspelnde Band 3 ab und geht dann zum Schritt S1 zurück.In a step S14, the control device 6 checks whether the operating method according to the invention should now be terminated. If this is the case, it naturally terminates the further processing of the computer program 9. Otherwise, the control device 6 waits in a step S15 for the next tape 3 to be rewound and then returns to step S1.

Wie insbesondere aus FIG 3 ersichtlich ist, erhöht die Steuereinrichtung 6 das Haspelgrenzmoment mH nach dem Haspelerreichzeitpunkt HEZP von einem Haspelanfangsmoment mH1 stetig, so dass das Haspelgrenzmoment mH zum Haspelfasszeitpunkt HFZP ein Haspelendmoment mH2 erreicht. Das Haspelgrenzmoment mH ist gemäß FIG 3 ersichtlich eine differenzierbare Funktion der Zeit t. Insbesondere weist das Haspelgrenzmoment mH gemäß FIG 3 einen S-förmigen Verlauf auf.As in particular from FIG. 3 can be seen, the control device 6 increases the reel limit torque mH after the reel recovery time HEZP of a reel start torque mH1 steadily, so that the reel limit torque mH to the reel catch time HFZP reaches a reel end torque mH2. The reel limit moment mH is according to FIG. 3 can be seen a differentiable function of the time t. In particular, the reel limit moment mH has according to FIG. 3 an S-shaped course.

Wie aus FIG 3 weiterhin ersichtlich ist, ändert die Steuereinrichtung 6 das Haspelgrenzmoment mH derart, dass eine zeitliche Ableitung des Haspelgrenzmoments mH vom Haspelerreichzeitpunkt HEZP bis zu einem ersten Zwischenzeitpunkt ZZP1 ansteigt und sodann bis zum Haspelfasszeitpunkt HFZP wieder absinkt. Der erste Zwischenzeitpunkt ZZP1 liegt dabei ersichtlich zwischen dem Haspelerreichzeitpunkt HEZP und dem Haspelfasszeitpunkt HFZP.How out FIG. 3 Furthermore, the control device 6 changes the reel limit torque mH such that a time derivation of the reel limit torque mH increases from the reel recovery time HEZP to a first intermediate time ZZP1 and then drops again to the reel catch time HFZP. The first intermediate time ZZP1 is evident here between the reel-rich time HEZP and the reel catch time HFZP.

Aus FIG 4 ist ersichtlich, dass die Steuereinrichtung 6 das Rollengrenzmoment mR nach dem Haspelerreichzeitpunkt HEZP vom Rollenanfangsmoment mR1 stetig absenkt, so dass das Rollengrenzmoment mR zum Haspelfasszeitpunkt HFZP ein Rollenendmoment mR2 erreicht. Ab dem Rollenfasszeitpunkt HFZP hingegen wird das Rollenendmoment mR2 beibehalten.Out FIG. 4 It can be seen that the control device 6 steadily lowers the roller limit torque mR after the reel recovery time HEZP from the reel start torque mR1, so that the reel limit torque mR to the reel catch time HFZP reaches a reel end torque mR2. On the other hand, the roll end torque mR2 is retained from the roller barrel time point HFZP.

Auch das Rollengrenzmoment mR ist vorzugsweise eine differenzierbare Funktion der Zeit t. Beispielsweise kann das Rollengrenzmoment mR, wie in FIG 4 dargestellt, zwischen dem Haspelerreichzeitpunkt HEZP und dem Haspelfasszeitpunkt HFZP ebenfalls einen S-förmigen Verlauf aufweisen.Also, the roll limit moment mR is preferably a differentiable function of the time t. For example, the roll limit moment mR, as in FIG FIG. 4 represented between the reel rich time HEZP and the reel catch time HFZP also have an S-shaped course.

Wie bereits in Verbindung mit FIG 2 erwähnt wurde und aus FIG 5 deutlicher ersichtlich ist, senkt die Steuereinrichtung 6 die Haspelsolldrehzahl nH* zwischen dem Haspelerreichzeitpunkt HEZP und dem Haspelfasszeitpunkt HFZP von dem ursprünglichen Wert nH1 auf einen erniedrigten Wert nH2 ab. Das Absenken erfolgt dabei stetig bis zu einem zweiten Zwischenzeitpunkt ZZP2, der ebenfalls zwischen dem Haspelerreichzeitpunkt HEZP und dem Haspelfasszeitpunkt HFZP liegt. Sodann wird die Haspelsolldrehzahl nH* stetig wieder auf den ursprünglichen Wert nH1 erhöht.As already in connection with FIG. 2 was mentioned and out FIG. 5 As can be seen more clearly, the control device 6 lowers the desired reel speed nH * between the reel start time HEZP and the reel catch point HFZP from the original value nH1 to a lowered value nH2. The lowering takes place steadily up to a second intermediate time ZZP2, which is also between the reel rich time HEZP and the reel catch time HFZP. Then, the reel target speed nH * is steadily increased back to the original value nH1.

Auch die Haspelsolldrehzahl nH* ist vorzugsweise eine differenzierbare Funktion der Zeit t. Beispielsweise kann sie, wie in FIG 5 dargestellt, einen muldenförmigen Verlauf aufweisen.The reel target speed nH * is also preferably a differentiable function of the time t. For example, it can, as in FIG. 5 shown, have a trough-shaped course.

Aus FIG 6 ist weiterhin ersichtlich, dass auch die Rollensolldrehzahl nR* eine differenzierbare Funktion der Zeit t ist. Insbesondere kann sie gemäß FIG 6 aus zwei Abschnitten 13, 14 bestehen, die jeweils einen S-förmigen Verlauf aufweisen und im Bereich zwischen dem Haspelerreichzeitpunkt HEZP und dem Haspelfasszeitpunkt HFZP ineinander übergehen.Out FIG. 6 It can also be seen that the desired rolling speed nR * is also a differentiable function of the time t. In particular, it can according to FIG. 6 consist of two sections 13, 14, each having an S-shaped curve and merge into each other in the area between the reel rich time HEZP and the reel catch time HFZP.

Durch die erfindungsgemäße, obenstehend beschriebene und in den Ansprüchen niedergelegte Vorgehensweise wird erreicht, dass Zugspannungsspitzen, die zu Beginn des Aufhaspelns im Band 3 auftreten, deutlich geringer sind als im Stand der Technik. Plastische Verformungen des Bandes 3 können dadurch mit an Sicherheit grenzender Wahrscheinlichkeit vermieden werden, zumindest aber deutlich verringert werden.The inventive method described above and laid down in the claims achieves that tensile stress peaks which occur at the beginning of the coiling in the band 3 are significantly lower than in the prior art. Plastic deformations of the tape 3 can be avoided with almost certain probability, or at least significantly reduced.

Claims (13)

  1. Operating method for a coiling arrangement (1) for coiling a strip (3), which has at least one coiler (4), a driving roller (5) preceding the coiler (4) and a control device (6) for the coiler (4) and the driving roller (5),
    - the driving roller (5) taking up the strip (3) at a roller pick-up time point (RFZP) and then feeding it at a strip speed (v) to the coiler (4),
    - the strip (3) reaching the coiler (4) at a coiler-reaching time point (HEZP)
    - the control device (6) outputting to the coiler (4) a coiler desired rotational speed (nH*) and a coiler limit torque (mH) acting in the strip running direction, so that the control device (6) operates the coiler (4) with a variable rotational speed and with torque limitation,
    - the control device (6) outputting to the driving roller (5) a roller desired rotational speed (nR*) and a roller limit torque (mR) acting in the strip running direction, so that the control device (6) operates the driving roller (5) with a variable rotational speed and with torque limitation,
    - the control device (6) continuously increasing the coiler limit torque (mH) from a coiler initial torque (mH1) after the coiler-reaching time point (HEZP), so that the coiler limit torque (mH) reaches a coiler final torque (mH2) at a coiler pick-up time point (HFZP), and
    - the control device (6) continuously lowering the roller limit torque (mR) from a roller initial torque (mR1) after the coiler-reaching time point (HEZP), so that the roller limit torque (mR) reaches a roller final torque (mR2) at the coiler pick-up time point (HEZP).
  2. Operating method according to Claim 1, characterized in that the coiler limit torque (mH) is a differentiable function of the time (t).
  3. Operating method according to Claim 2, characterized in that the control device (6) changes the coiler limit torque (mH) in such a way that a time derivation of the coiler limit torque (mH) rises from the coiler-reaching time point (HEZP) up to a first intermediate time point (ZZP1), which lies between the coiler-reaching time point (HEZP) and the coiler pick-up time point (HFZP), and falls from the first intermediate time point (ZZP1) up to the coiler pick-up time point (HEZP).
  4. Operating method according to Claim 1, 2 or 3, characterized in that the roller limit torque (mR) is a differentiable function of the time (t).
  5. Operating method according to one of the above claims, characterized in that the control device (6) lowers the coiler desired rotational speed (nH*), from an original value (nH1) to a lowered value (nH2) between the coiler-reaching time point (HEZP) and the coiler pick-up time point (HEZP).
  6. Operating method according to Claim 5, characterized in that the control device (6) lowers the coiler desired rotational speed (nH*) continuously to the lowered value (nH2) between the coiler-reaching time point (HEZP) and a second intermediate time point (ZZP2) and increases it continuously again to the original value (nH1) from the second intermediate time point (ZZP2) to the coiler pick-up time point (HEZP).
  7. Operating method according to Claim 6, characterized in that the coiler desired rotational speed (nH*) is a differentiable function of the time (t).
  8. Operating method according to one of the above claims, characterized in that the control device (6) continuously lowers the roller desired rotational speed (nR*) from a roller initial rotational speed (nR1) even before the coiler-reaching time point (HEZP), so that the roller desired rotational speed (nR*) reaches an intermediate value (nR2) at the coiler-reaching time point (HEZP), and in that the control device (6) then maintains the roller desired rotational speed (nR*) up to the coiler pick-up time point (HEZP).
  9. Operating method according to one of the above claims, characterized in that the control device (6), starting from an initial degree of spread (g1), spreads the coiler (4) at a spreading speed (g') from a start of spread (SB) preceding the coiler pick-up time point (HFZP), in that the control device (6) detects a coiler degree of spread (g) prevailing at the coiler pick-up time point (HFZP), and in that the control device (6) tracks the initial degree of spread (g1), the spreading speed (g') and/or the start of spread (SB), in such a way that, during the coiling of following strips, an approximation of the coiler degree of spread prevailing at their coiler pick-up time point to a desired coiler degree of spread is to be expected.
  10. Data carrier having a computer program (9), stored on the data carrier, for a control device (6) for carrying out an operating method according to one of the above claims.
  11. Control device for a coiling arrangement (1) for coiling a strip (3), which, in addition to the control device, has at least one coiler (4) and a driving roller (5) preceding the coiler (4), characterized in that the control device is designed in such a way that it operates the coiler (4) and the driving roller (5) according to an operating method according to one of claims 1 to 9.
  12. Control device according to Claim 11, characterized in that it has a program memory (10) in which a computer program (9) for the control device is stored, and in that the control device operates the coiler (4) and the driving roller (5) on the basis of the computer program (9) according to one of claims 1 to 9.
  13. Coiling arrangement for coiling a strip (3), which has at least one coiler (4), a driving roller (5) preceding the coiler (4) and a control device (6) for the coiler (4) and the driving roller (5), characterized in that the control device (6) is designed according to Claim 11 or 12.
EP06807311A 2005-10-17 2006-10-16 Operational method for a coiling arrangement for coiling a strip and corresponding objects Not-in-force EP1945387B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06807311T PL1945387T3 (en) 2005-10-17 2006-10-16 Operational method for a coiling arrangement for coiling a strip and corresponding objects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005049604A DE102005049604A1 (en) 2005-10-17 2005-10-17 Operating method for a reel assembly for coiling a tape and objects corresponding thereto
PCT/EP2006/067457 WO2007045636A1 (en) 2005-10-17 2006-10-16 Operational method for a coiling arrangement for coiling a strip and corresponding objects

Publications (2)

Publication Number Publication Date
EP1945387A1 EP1945387A1 (en) 2008-07-23
EP1945387B1 true EP1945387B1 (en) 2009-04-08

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Application Number Title Priority Date Filing Date
EP06807311A Not-in-force EP1945387B1 (en) 2005-10-17 2006-10-16 Operational method for a coiling arrangement for coiling a strip and corresponding objects

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EP (1) EP1945387B1 (en)
CN (1) CN101291755B (en)
AT (1) ATE427795T1 (en)
DE (2) DE102005049604A1 (en)
ES (1) ES2322402T3 (en)
PL (1) PL1945387T3 (en)
WO (1) WO2007045636A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102941242B (en) * 2012-11-28 2014-10-22 北京金自天正智能控制股份有限公司 Full-automatic control method of large coil recoiling machine
CN103480688B (en) * 2013-09-22 2015-11-25 首钢京唐钢铁联合有限责任公司 Strip steel head end coiling method
CN114970124B (en) * 2022-05-12 2023-02-17 燕山大学 Method for modeling transmission parameters of strip steel finishing unit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741083C2 (en) * 1977-09-13 1983-03-03 Maschinenfabrik Stahlkontor Weser Lenze Kg, 3251 Aerzen Friction winding shaft drive
JPS58163524A (en) * 1982-03-19 1983-09-28 Mitsubishi Electric Corp Control device of steel plate winder
JPH01181916A (en) * 1988-01-12 1989-07-19 Kawasaki Steel Corp Method for controlling outlet-side tension in continuous cold rolling mill
DE4039606A1 (en) * 1989-12-13 1991-06-20 Sundwiger Eisen Maschinen REEL FOR WINDING AND / OR UNWINDING METAL TAPES WITH TAPE TENSIONS BETWEEN 10KN AND 1000KN
DE9216261U1 (en) * 1992-10-19 1994-02-24 Windmöller & Hölscher, 49525 Lengerich Device for winding a web
DE4303721C2 (en) * 1993-02-09 1995-04-27 Sundwiger Eisen Maschinen Winding reel for tapes, with an electromotive drive, in particular with a transmission gear
JP3280818B2 (en) * 1995-02-28 2002-05-13 三菱電機株式会社 Tension control device
DE19614300B4 (en) * 1995-04-21 2004-08-26 Abb Patent Gmbh Process for self-regulating compensation for the effects of uneven concentricity of a roll
JP2000271641A (en) * 1999-03-25 2000-10-03 Kawasaki Steel Corp Method for winding strip

Also Published As

Publication number Publication date
WO2007045636A1 (en) 2007-04-26
CN101291755B (en) 2011-04-20
DE502006003401D1 (en) 2009-05-20
CN101291755A (en) 2008-10-22
DE102005049604A1 (en) 2007-04-26
EP1945387A1 (en) 2008-07-23
ATE427795T1 (en) 2009-04-15
PL1945387T3 (en) 2009-09-30
ES2322402T3 (en) 2009-06-19

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