EP2328697A1 - Betriebsverfahren für einen streckrichter mit überlagerter elongationsregelung und unterlagerter zugregelung - Google Patents
Betriebsverfahren für einen streckrichter mit überlagerter elongationsregelung und unterlagerter zugregelungInfo
- Publication number
- EP2328697A1 EP2328697A1 EP09779474A EP09779474A EP2328697A1 EP 2328697 A1 EP2328697 A1 EP 2328697A1 EP 09779474 A EP09779474 A EP 09779474A EP 09779474 A EP09779474 A EP 09779474A EP 2328697 A1 EP2328697 A1 EP 2328697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- speed
- input
- setpoint
- output
- elongation
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
Definitions
- the present invention relates to an operating method for a drafting jig comprising an input-side conveying element, a bending element and an output-side conveying element, - wherein the bending element from the input-side conveying element with an input speed, a band, in particular a metal strip is supplied
- the strip being deflected alternately up and down in the bending element by means of rolls of the bending element set on the strip,
- the present invention further relates to a computer program for a control device of a drafting jig, the computer program comprising machine commands that are directly executable by the control device, wherein the execution of the machine commands by the control device causes the control device to operate the drafting jig according to such an operating method.
- the present invention further relates to a control device for a stretcher, wherein the control device is designed such that it has at least one operating mode in which it operates the stretcher according to such an operating method.
- the present invention relates to a drafting straightener for a band, in particular a metal band,
- the stretcher comprising an input-side conveying element, a bending element and an output-side conveying element,
- the stretcher comprises a control device.
- an operating method for a drafting jig which comprises an input-side conveying element, a bending element and an output-side conveying element.
- the bending element is supplied from the input side conveyor element with an input speed, a metal strip.
- the metal strip is removed from the output side conveyor element with an output speed from the bending element.
- the metal strip is deflected in the bending element by means of employees on the belt rollers down.
- an operating method for a drafting jig which comprises an input-side conveying element, a bending element and an output-side conveying element.
- the bending element is fed by the input-side conveyor element with an input speed, a band.
- the belt is discharged from the output side conveyor element with an output speed from the bending element.
- the output speed is greater than the input speed so that the tape is stretched plastically.
- the band is deflected alternately up and down in the bending element by means of employees on the belt rollers of the bending element.
- An actual train value is recorded, which is fed to a draft regulator.
- an operating method for a drafting straightener which comprises an input-side conveying element, a bending element and an output-side conveying element.
- the bending element is fed from the input-side conveyor element with an input speed, a band.
- the belt is discharged from the output side conveyor element with an output speed from the bending element.
- the initial speed is greater than the input speed, so that the belt is stretched plastically.
- the band is deflected alternately up and down in the bending element by means of employees on the belt rollers of the bending element.
- Stretching funnels of the type described above are generally operated alternatively in Wergmode or Elongationsregelmode.
- Switzerlandregelmode there is no elongation of the band.
- the output speed is equal to the input speed.
- the corresponding speed setpoints also match.
- the tape tension is not regulated in the prior art.
- the strip tension is monitored for compliance with an absolute value. If the absolute strip tension exceeds a maximum permissible strip tension, the elongation setpoint value is reduced in order to lower the strip tension again. If the absolute strip tension falls below the maximum permissible strip tension, slowly increases the elongation setpoint to the original elongation setpoint via a ramp function.
- Another problem of the prior art is that during common changes in the speed setpoints, ie during acceleration and deceleration of the belt, strong deviations of the actual actual elongation from the elongation setpoint occur.
- the object of the present invention is to provide possibilities by means of which vibrations in the current strip tension and in the elongation setpoint can be intercepted in a simple manner and, if possible, also the deviations in the actual elongation during acceleration and deceleration processes can be reduced.
- the elongation controller determines a tension setpoint based on the values supplied to it, ie on the elongation actual value and the elongation setpoint.
- the tension setpoint is limited to a maximum tension setpoint.
- the train actual value and the train setpoint limited to the maximum train setpoint are fed to a train controller, which determines a supplementary speed setpoint on the basis of the values supplied to it, that is to say based on the train actual value and the limited train setpoint.
- the elongation controller and the draft regulator can be designed as required. It is currently preferred that the elongation controller is designed as a PI controller and that the tension regulator is designed as a P controller or as a PI controller.
- the output-side speed setpoint is determined by multiplying the input-side speed setpoint by the elongation setpoint.
- the object is further achieved by a computer program having the features of claim 5.
- the execution of the machine commands by the control device causes the control device to operate the stretcher according to an operating method according to the invention.
- the computer program can be stored on a mobile data carrier. Alternatively, it may be stored in the controller. Furthermore, the object is achieved by a control device having the features of claim 8. According to the invention, the control device is designed such that it has at least one operating mode in which it operates the stretcher according to an operating method according to the invention.
- the object is achieved by a stretcher with the features of claim 9.
- the stretcher has a control device of the last-described type.
- FIG. 2 shows a possible embodiment of the control device of the stretch leveler of FIG. 1
- a drafting rectifier comprises an input-side conveying element 1, a bending element 2, and an output-side conveying element 3.
- the input-side conveying element 1 and the output-side conveying element 3, optionally also the bending element 2, are controlled by a control device 4.
- the input-side conveyor element 1 is usually designed as an S roller set. It may have two or more than two rollers 5a to 5d. Shown in FIG. 1 is a design of the input-side conveyor element 1 with four
- the rollers 5a to 5d of the input-side conveyor element 1 are at least partially driven.
- the roller 5d that is, the bending member 2 immediately upstream roller 5d, is driven.
- the input-side conveyor element 1 leads to the bending element 2 a band 6.
- the band 6 is usually a metal band 6, for example a steel, aluminum or copper band. In some cases, the band 6 can also be designed as a textile band.
- the feeding of the belt 6 to the bending element 2 takes place with an input speed vi.
- an input-side speed controller 7 is provided, to which the input speed vi and an input-side speed setpoint vi * are supplied.
- the input-side speed controller 7 causes the input-side conveyor element 1 is controlled to the input-side speed setpoint vi.
- it outputs a suitable actuating signal S 1 to the input-side conveying element 1.
- it can control a drive of the roller 5d accordingly.
- the output-side conveyor element 3 is usually designed as an S-roller set. Analogously to the input-side conveying element 1, the S-roller set may have two or more than two rollers 8a to 8d. Shown in FIG 1 four rollers 8a to 8d. This embodiment is common in the context of the present invention, but not mandatory.
- rollers 8a to 8d of the output-side conveyor element 3 are at least partially driven.
- the innermost roller 8a that is, the bending element 2 immediately downstream roller 8a, is driven.
- the band 6 is removed from the bending element 2.
- the removal takes place with an initial speed v2.
- an output-side speed controller 9 is present, to which the output speed v2 and an output-side speed setpoint v2 * are supplied.
- the output-side speed controller 9 causes the output-side conveyor element 3 on the output-side speed Setpoint v2 * is regulated. It outputs for this purpose a suitable control signal S2 to the output-side conveyor element 3. For example, it can drive a drive of the roller 8a accordingly.
- the bending element 2 has a number of rollers 10. Shown in FIG. 1 are five such rollers 10. However, the number of rollers 10 of the bending element 2 could alternatively be greater or less than five. The rollers 10 are not driven in the rule. They could, however, be powered. The rollers 10 of the bending element 2 are employed on the belt 6. By means of the rollers 10, the band 6 is deflected in the bending element 2 alternately up and down.
- the stretcher is usually in one, among other things
- the Switzerlandregelmode may also be possible in the context of the present invention. This is not important. It is crucial that the stretcher be operated (at least inter alia) in a Elongationsregelmode.
- the Elongation rule mode is explained in more detail below.
- the output-side speed setpoint v2 * is greater than the input-side speed setpoint vi *.
- the output speed v2 is also greater than the input speed vi.
- the speed difference between the output speed v2 and the input speed vi is in this case such that the belt 6 is plastically stretched between the conveyor elements 1, 3.
- the input speed vi and the output speed v2 are detected. The detection takes place by means of corresponding speed detection elements 12, 13.
- the speeds vi, v2 of the outer rollers 5a, 8d are detected.
- the detected velocities vi, v2 are supplied not only to the speed controllers 7, 9, but also to an elongation detector 14, which determines an elongation actual value e for the band 6 on the basis of the input speed vi and the output speed v2.
- the elongation actual value e and an elongation setpoint e * (with e *> 1) are fed to an elongation controller 15.
- the elongation controller 15 determines a train setpoint Z * based on the values e, e * supplied to it.
- the elongation controller 15 can be of any desired design, for example as a P controller, as a PI controller, as a PID controller, as a PTI controller or as a PT2 controller. Usually, the elongation controller 15 is designed as a PI controller.
- the train setpoint Z * is fed to a tension controller 16. Between the elongation controller 15 and the tension regulator 16, however, a limiting element 17 is arranged. The limiting element 17 limits the train setpoint Z * to a maximum
- Tension setpoint ZMAX * The maximum tension setpoint ZMAX * is determined such that it lies above the yield strength of the belt 6, but below a value above which excessive wear occurs, in particular in bearings of the rollers 10 of the bending element 2.
- the tension regulator 16 is therefore supplied
- the tension controller 16 is further supplied with the Wernerwert Z.
- the actual train value Z can be determined here by means of the train detection ment 11 or otherwise by means of another, not shown Bucher crabselements be detected.
- the tension controller 16 determines a speed addition setpoint ⁇ v * based on the values Z and Z * or Z and ZMAX * supplied to it.
- the tension regulator 16 can be designed as desired for this purpose.
- the above statements on the design of the elongation regulator 15 are applicable analogously.
- the tension controller 16 is embodied either as a P controller or as a PI controller. Both embodiments are shown in FIG. However, since both embodiments are alternative to each other, both embodiments are shown in FIG 1 only by dashed lines.
- the additional speed setpoint value ⁇ v * is fed to a connection element 18.
- the Aufschaltelement 18 is further supplied to the output side speed setpoint v2 *.
- the connection element 18 switches on the additional speed setpoint value ⁇ v * to the output speed setpoint value v2 *.
- the output speed setpoint v2 * can in principle be determined in any way. Specifically, the output-side speed command value v2 * may first be set equal to the input-side speed command value vi * or may differ from the input-side speed command value vi * by a fixed value. Preferably, however, the input-side speed command value vi * and the elongation command value e * are supplied to a multiplier 19. The multiplier 19 determines the output-side speed command value v2 * by multiplying the input-side speed command value vi * by the elongation command value e *.
- control device 4 is constructed in accordance with the representation in FIG 1 in hardware. Often, however, the control device 4, as shown in FIG. 2, is designed as a software-programmable control device. educated. In this case, the control device 4 has a processor 20, which executes a computer program 21. The computer program 21 in this case determines the mode of action of the control device 4.
- the computer program 21 comprises machine commands 22 which can be processed directly by the control device 4 (more precisely by the processor 20 of the control device 4).
- the processing of the machine commands 22 by the control device 4 causes the control device 4 to operate the stretcher as explained above in connection with FIG.
- the computer program 21 must be stored in an internal memory 23 of the
- Control device 4 be deposited. At this time, the computer program 21 is thus stored in the control device 4. However, the feeding of the computer program 21 to the control device 4 can take place in various ways.
- the control device 4 must have a corresponding interface for the mobile data carrier 24.
- the mobile data carrier 24 can be designed as required. For example, it can be designed as a CD-ROM, as an SD memory card or according to the illustration in FIG. 2 as a USB memory stick.
- control device 4 it is possible to supply the computer program 21 of the control device 4 via a computer-computer connection 25.
- the control device 4 must have a corresponding interface to the computer-computer connection 25.
- the computer-computer connection 25 may for example be a LAN or a larger computer network, in particular the World Wide Web.
- the present invention has many advantages.
- a stable, vibration-free behavior of the stretch leveler can be achieved.
- the strong deviations between elongation setpoint e * and elongation actual value e which occur in the prior art, can be significantly reduced. In tests, the deviations could be reduced to approx. 20% of the previous deviation.
- the elongation actual value e also follows the elongation setpoint e * quickly and without appreciable overshoot when the elongation reference value e * changes.
- the stretch leveler runs more stable. As a result, a significant production and quality improvement can be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL09779474T PL2328697T3 (pl) | 2008-09-01 | 2009-05-14 | Sposób eksploatacji prostownicy rozciągającej z nadrzędną regulacją wydłużenia i podrzędną regulacją naciągu |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008045340A DE102008045340A1 (de) | 2008-09-01 | 2008-09-01 | Betriebsverfahren für einen Streckrichter mit überlagerter Elongationsregelung und unterlagerter Zugregelung |
| PCT/EP2009/055820 WO2010022992A1 (de) | 2008-09-01 | 2009-05-14 | Betriebsverfahren für einen streckrichter mit überlagerter elongationsregelung und unterlagerter zugregelung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2328697A1 true EP2328697A1 (de) | 2011-06-08 |
| EP2328697B1 EP2328697B1 (de) | 2013-01-30 |
| EP2328697B2 EP2328697B2 (de) | 2019-10-09 |
Family
ID=41010016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09779474.7A Active EP2328697B2 (de) | 2008-09-01 | 2009-05-14 | Betriebsverfahren für einen streckrichter mit überlagerter elongationsregelung und unterlagerter zugregelung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2328697B2 (de) |
| CN (1) | CN102137725B (de) |
| DE (1) | DE102008045340A1 (de) |
| PL (1) | PL2328697T3 (de) |
| WO (1) | WO2010022992A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013035449A1 (ja) * | 2011-09-07 | 2013-03-14 | スチールプランテック株式会社 | ローラレベラおよびそれを用いた金属板の矯正方法 |
| RU2557843C2 (ru) * | 2012-07-27 | 2015-07-27 | Иван Тимофеевич Тоцкий | Способ холодной деформации непрерывной металлической полосы |
| DE102018111627A1 (de) * | 2018-01-23 | 2019-07-25 | Klaus Lenz | Streck-Biege-Richtanlage und Verfahren zu deren Betätigung |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1602589A1 (de) * | 1967-05-31 | 1970-03-26 | Ungerer Irma | Anordnung zum Streckrichten kontinuierlich durchlaufender Blechbaender |
| JPS5581009A (en) * | 1978-12-14 | 1980-06-18 | Nippon Steel Corp | Skin-pass rolling shape control method of cold rolled hoop after continuous annealing and equipment thereof |
| DE2911983C2 (de) * | 1979-03-27 | 1986-03-20 | Mannesmann AG, 4000 Düsseldorf | Vorrichtung zum Regeln von Anlagen zum Streckbiegerichten kontinuierlich durchlaufender Bänder |
| JPH0237803B2 (ja) * | 1984-08-18 | 1990-08-27 | Yaskawa Denki Seisakusho Kk | Tenshonrebera |
| GB2174027B (en) * | 1985-04-20 | 1988-07-13 | Bwg Bergwerk Walzwerk | Process and equipment for continuous flattening of particularly thin metal strip |
| DE3525343C1 (de) * | 1985-04-20 | 1986-12-11 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg | Verfahren und Vorrichtung zum Kontinuierlichen Richten von Metallbändern |
| JP2518370B2 (ja) † | 1988-12-28 | 1996-07-24 | 株式会社安川電機 | テンションレベラ制御方法 |
| JPH0768319A (ja) * | 1993-06-29 | 1995-03-14 | Kawasaki Steel Corp | テンションレベラの制御方法 |
| DE19520541C2 (de) * | 1995-06-03 | 1999-01-14 | Bwg Bergwerk Walzwerk | Verfahren und Vorrichtung zum Korrigieren eines gewalzten, in der Bandebene horizontal gebogenen Metallbandes, insbesondere eines Metallbandes mit einer Banddicke von 0,5 mm bis 2,0 mm |
| JPH11347630A (ja) | 1998-06-03 | 1999-12-21 | Yodogawa Steel Works Ltd | テンションレベラーでの金属板の伸び率実績値の算出方法と伸び率制御方法 |
| JP4333162B2 (ja) * | 2003-02-27 | 2009-09-16 | Jfeスチール株式会社 | テンションレベラによる伸び率制御方法 |
| DE10342798B3 (de) | 2003-09-16 | 2005-03-10 | Siemens Ag | Bandzugregelung in einer Behandlungslinie für Materialband, insbesondere Metallband |
| DE102004048658A1 (de) * | 2004-10-06 | 2006-04-20 | Sms Demag Ag | Vorrichtung zum kontinuierlichen Zugrecken eines Metallbandes und Verfahren zum Betreiben einer solchen Vorrichtung |
| CN201464909U (zh) * | 2009-08-11 | 2010-05-12 | 天津赛瑞机器设备有限公司 | 基于plc的芯棒压力矫直机控制系统 |
-
2008
- 2008-09-01 DE DE102008045340A patent/DE102008045340A1/de not_active Withdrawn
-
2009
- 2009-05-14 CN CN2009801338135A patent/CN102137725B/zh active Active
- 2009-05-14 PL PL09779474T patent/PL2328697T3/pl unknown
- 2009-05-14 WO PCT/EP2009/055820 patent/WO2010022992A1/de not_active Ceased
- 2009-05-14 EP EP09779474.7A patent/EP2328697B2/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010022992A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010022992A1 (de) | 2010-03-04 |
| CN102137725B (zh) | 2013-09-11 |
| EP2328697B1 (de) | 2013-01-30 |
| PL2328697T3 (pl) | 2013-07-31 |
| EP2328697B2 (de) | 2019-10-09 |
| CN102137725A (zh) | 2011-07-27 |
| DE102008045340A1 (de) | 2010-03-04 |
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