EP0086270B1 - Dispositif de commande pour l'alimentation des bandes - Google Patents

Dispositif de commande pour l'alimentation des bandes Download PDF

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Publication number
EP0086270B1
EP0086270B1 EP82111628A EP82111628A EP0086270B1 EP 0086270 B1 EP0086270 B1 EP 0086270B1 EP 82111628 A EP82111628 A EP 82111628A EP 82111628 A EP82111628 A EP 82111628A EP 0086270 B1 EP0086270 B1 EP 0086270B1
Authority
EP
European Patent Office
Prior art keywords
web
run
sensors
sensor
signals
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.)
Expired
Application number
EP82111628A
Other languages
German (de)
English (en)
Other versions
EP0086270A1 (fr
Inventor
Wolfgang Krauth
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.)
Erhardt and Leimer GmbH
Original Assignee
Erhardt and Leimer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Publication of EP0086270A1 publication Critical patent/EP0086270A1/fr
Application granted granted Critical
Publication of EP0086270B1 publication Critical patent/EP0086270B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers

Definitions

  • the invention relates to a control device in. Preamble of the main claim specified Art.
  • the first sensor is solely responsible for the web run along a predetermined target position determined by the position of the web edge. For this purpose, when the edge of the web edge monitored by it runs laterally, it generates a signal which represents the extent and the direction of the course movement and is used via a proportional amplifier to control the drive of the rotating device. The rotating device then corrects the running of the web by a force acting transversely to the web running direction until the monitored web edge is again in the desired position.
  • the second sensor is used to adjust the position of the two sensors to the respective width of the web.
  • the edge of the web monitored by the second sensor runs out of the sensing area, it also generates a signal representing the extent and the direction of the run, which is also used via a proportional amplifier to control the drive of the adjustment device.
  • the adjusting device then moves the two sensors towards or away from each other, so that they are again aligned with the edge of the web in the scanning area depending on the respective width of the web.
  • the first sensor also registers a path of the web on the set up direction and initiates a correction by means of a corresponding signal if the web remains correctly in the set up direction but the web width has changed.
  • the invention has for its object to improve a control device of the type mentioned that it works more sensitively and less sluggishly than the known, and that it provides a more balanced control behavior.
  • a correction signal is only supplied to the drive of the rotating device if the web has actually left this setpoint direction and has to be returned to it.
  • the first sensor is, so to speak, in a position to distinguish between an actual course from the target erection and only a change in the width of the running web. In this way, no correction signal is generated if only the width of the web changes.
  • the adjusting device can respond immediately to the change in width and bring the sensors to the required mutual distance.
  • the adjusting device and the turning device work together in order to return the web to the set up direction as quickly as possible and without overcorrection and at the same time open the sensors set the necessary mutual distance. Because the control device responds less sluggishly in this way and no longer tends to oscillate in the control behavior, the web can be drawn at a desirable high web running speed.
  • a difference signal is generated from the signals generated by the two sensors in a particularly simple manner, with which it is possible to distinguish between an actual course and the set direction and only a change in width.
  • a further, expedient embodiment of the subject matter of the invention can be found in claim 3.
  • a differential amplifier is particularly well suited for the task to be solved here, since it not only generates a difference from the two signals fed to it, but also amplifies this difference in such a way that it can be converted into an effective correction signal for driving the rotary device.
  • the sensors hereby generate signals which can be used particularly reliably for the control and which not only represent the extent of the respective deviation from a desired position, but also the direction in which this deviation occurred.
  • the differential amplifier in particular can precisely detect such signals and convert their meaning into a correction signal for the rotating device.
  • the tolerance range of the sensor will be designed according to the desired sensitivity of the control loop. The tolerance range is kept very narrow for high control accuracy.
  • a control device 1 for a running web 2 can be seen, the control device 1 being responsible for the running of the web 2 along a predetermined line.
  • the web 2 is drawn in the direction of an arrow 26 by a device, not shown.
  • the web 2 has edge edges 3, 4.
  • the width of the web 2 is not constant, but it can change unpredictably. For example, the web 2 is wider in the areas 3a, 4a than in the section behind it.
  • the dashed line at 4b indicates how the web 2 can deviate from the intended erection to the left.
  • the control device has a rotary device 5 of conventional design, which can be rotated in directions indicated by a double arrow 7 via rotary drive 6 and acts on the running web 2. It is obvious that when the rotating device 5 is rotated from the position drawn in solid lines, a force acting to the left or to the right acts on the web, which force must be used to correct the path of the web.
  • an adjusting device 8a is provided behind the rotating device 5, which in this exemplary embodiment consists of a threaded spindle 8 arranged transversely to the web running direction 26 and having two opposing threaded sections.
  • the threaded spindle 8 is supported at its free end in a bearing 9 and can be driven to rotate in both directions of rotation by means of a drive 10.
  • a first sensor 13 and a second sensor 12 are screw-mounted on the threaded spindle 8 via nuts 11 and are aligned with the web edge 3 and 4.
  • the first sensor 13 has a sensing area 15 indicated in dashed lines, while the second sensor 12 has a similar sensing area 14. With 16 and 17 tolerance ranges of the two sensors 12 and 13 are indicated, within which the respectively monitored edge 3 or 4 of the web can move to the side without the two sensors 12, 13 generating a signal.
  • the two sensors 12, 13 are able to emit signals which, when the tolerance range 16 or 17 is exceeded, not only represent the extent to which the tolerance range has been exceeded, but also the direction in which this exceedance takes place.
  • the signals emitted by the first sensor 13 are fed to a differential amplifier 21 via a line 22.
  • the signals emitted by the second sensor 12 are fed to the differential amplifier 21 via a control line branch 18b.
  • the signals emitted by the second sensor 12 are simultaneously fed via a control branch line 18a to a proportional amplifier 19 which controls the drive 10 of the adjusting device 8a via a control line 20.
  • the differential amplifier 21 the signals supplied from the lines 18b and 22 are compared, and if a difference occurs, a signal is generated which is fed via a line 24 to the drive, not shown, of the rotating device 5 for correcting the tape running.
  • the differential amplifier 21 is also connected via a line 25 to a display device 23 which either generates a warning signal or interrupts the transport of the web 2 when a signal indicating a fault is determined by the differential amplifier 21.
  • the tolerance range is exceeded for both sensors 12, 13.
  • the first sensor 13 emits a signal which is fed to the differential amplifier 21 via the line 22.
  • the second sensor 12 emits a corresponding signal, which is fed via line 18b both to differential amplifier 21 and via line 18a and proportional amplifier 19, and line 20 also to drive 10.
  • a difference value is determined from these two signals from the lines 18b and 22 and a signal is generated therefrom, so that a correction signal corresponding to the difference is fed to the drive of the rotating device 5, which causes the rotating device to rotate rapidly 5 leads, so that the web edge 4 is returned from the position 4b to the old position.
  • the drive 10 has rotated the threaded spindle 8 on the basis of the signal from the second sensor 12 in such a way that the distance between the two sensors 13 is increased, as a result of which the trailing edge 3 and 4 of the web returns earlier to the tolerance range of the two sensors 12, 13 and the correction signal is dismantled for the rotating device. If, as a result of the return of the web 2 to the full set-up, then both sensors 12 and 13 emit signals again, but which are then opposite to one another, the differential amplifier 21 does not generate a correction signal, since the two signals cancel each other out. In this case, only the drive 10 is prompted by the signal via line 20 to align the two sensors 12 and 13 again.
  • the two sensors produce signals, provided the web runs in the desired direction, again opposite signals which the differential amplifier 21 does not generate a differential signal. Because the difference is zero, the rotating device 5 is not operated.
  • the drive 10 as a result of the signal supplied by it from the second sensor 12, ensures that the distance between the two sensors 12 and 13 is increased to the actual width of the web. If the width change occurs symmetrically, the differential amplifier 21 ensures that the rotating device 5 is not started unnecessarily.
  • control device is that a difference can be made via the differential amplifier, which evaluates the signals from both sensors, whether the web has run to the side or whether only a change in width has occurred, which is a change in the distance between the sensors required, or whether these two influences occur in combination.
  • control device is superior to the control devices in which the two sensors separately control either the adjusting device or the rotating device.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (5)

1. Dispositif de réglage (1) pour le défilement d'une bande (2) tirée en continu, feuille, bande de tissu ou de tissu maillé de largeur variable notamment, avec un dispositif tournant (5) entraîné dans un mouvement de correction du défilement, avec un capteur (12, 13) générateur de signaux, prévu sur chaque bord latéral (3,4) de la bande, et avec un dispositif d'ajustement (8a), transversal au sens du défilement (26) et sur lequel sont montés les capteurs (12, 13) avec une possibilité de déplacement synchrone pour le réglage, transversal au sens (26) précité, de leur écartement mutuel, le premier et le second capteur (13, 12) permettant respectivement d'attaquer l'entraînement du dispositif tournant (5) pour rectifier le défilement et de déclencher l'entraînement (10) du dispositif d'ajustement (8a) pour modifier l'écart entre les deux capteurs (12, 13), dans le cas d'une déviation, par rapport à une position de consigne, des bords latéraux respectifs (3, 4) qu'ils contrôlent, caractérisé en ce que les signaux émis par le second capteur (12) et transmis à l'entraînement (10) du dispositif d'ajustement (8a) sont superposables aux signaux générés par le premier capteur (13), et en ce que les signaux de correction pour l'eintraînement du dispositif tournant (5) sont générés à partir des signaux superposés précités.
2. Dispositif de réglage suivant la revendication 1, caractérisé en ce que les sorties des deux capteurs (12, 13) sont raccordées à un dispositif (21 ) qui établit une différence entre les signaux et attaque, côté sortie, l'eintraînement du dispositif tournant (5).
3. Dispositif de réglage suivant la revendication 2, caractérisé en ce que le dispositif (21) est un amplificateur différentiel.
4. Dispositif de réglage selon la revendication 3, caractérisé en ce que l'amplificateur différentiel est également raccordé, côté sortie, à un indicateur (23).
5. Dispositif de réglage suivant une quelconque des revendications 1 à 4, caractérisé en ce que les deux capteurs (12, 13) sont conçus avec une zone de tolérance (16, 17) et génèrent, en cas de dépassement de cette dernière, des signaux qui représentent la valeur et le sens respectifs du dépassement précité.
EP82111628A 1982-02-02 1982-12-15 Dispositif de commande pour l'alimentation des bandes Expired EP0086270B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3203452 1982-02-02
DE19823203452 DE3203452C2 (de) 1982-02-02 1982-02-02 Bahnlaufregelvorrichtung

Publications (2)

Publication Number Publication Date
EP0086270A1 EP0086270A1 (fr) 1983-08-24
EP0086270B1 true EP0086270B1 (fr) 1986-02-19

Family

ID=6154574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111628A Expired EP0086270B1 (fr) 1982-02-02 1982-12-15 Dispositif de commande pour l'alimentation des bandes

Country Status (2)

Country Link
EP (1) EP0086270B1 (fr)
DE (1) DE3203452C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7374072B2 (en) 2004-11-09 2008-05-20 Bae Industries, Inc. Slide adjustable assembly for monitoring widthwise travel of an uncoiling steel band through a feeder system associated with a progressive die
CN103010796A (zh) * 2012-12-06 2013-04-03 嘉善圣莱斯绒业有限公司 一种基布自动送料装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614981A1 (de) * 1986-05-02 1987-11-05 Erhardt & Leimer Gmbh Verfahren und vorrichtung zum fuehren einer laufenden warenbahn
DE4203952C2 (de) * 1992-02-11 1995-10-19 Bst Servo Technik Gmbh Verfahren zum Positionieren zweier Fühler bei einer Bahnlaufregeleinrichtung
DE4316383A1 (de) * 1993-05-17 1994-11-24 Hoechst Ag Verfahren und Vorrichtung zur Vergleichmäßigung der Wickelhärten eines Rollenprofils eines Folienwickels
DE29501373U1 (de) * 1995-01-30 1995-04-27 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zur Korrektur des Fan-Out-Effekts an Rollenrotationsdruckmaschinen
DE102006050906B3 (de) * 2006-10-28 2008-05-29 Baldwin Germany Gmbh Automatische Bahnfangvorrichtung für Rollenrotationsdruckmaschinen
CN102561002A (zh) * 2012-01-01 2012-07-11 武汉金运激光股份有限公司 一种带有自动纠偏装置的激光切割机及其纠偏系统
DE102015116854A1 (de) 2015-10-05 2017-04-06 Manroland Web Systems Gmbh Verfahren zur Regelung der Bahnlage
CN108792724B (zh) * 2018-05-04 2020-01-10 广州贝晓德智能科技有限公司 对称纠偏设备
CN113666166A (zh) * 2020-05-15 2021-11-19 大族激光科技产业集团股份有限公司 一种纠偏传感器自动调整机构及其控制方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105263C3 (de) * 1971-02-04 1975-08-07 Erhardt & Leimer Kg, 8900 Augsburg Steuerung für Warenbahnführer
IE39327B1 (en) * 1973-12-28 1978-09-13 Inst For Ind Res & Standards Apparatus for the control if the width of a web
DE2627103A1 (de) * 1976-06-16 1977-12-22 Bhs Bayerische Berg Verfahren und vorrichtung zum automatischen erfassen des endes einer bahn oder eines abrisses und verbinden mit dem anfang einer neuen bahn, insbesondere in wellenpappenanlagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Informationsschrift Rg Nr. 12 Folge Nr. 1 15. Mai 1974 der Firma Erhardt & Leimer Kg *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7374072B2 (en) 2004-11-09 2008-05-20 Bae Industries, Inc. Slide adjustable assembly for monitoring widthwise travel of an uncoiling steel band through a feeder system associated with a progressive die
CN103010796A (zh) * 2012-12-06 2013-04-03 嘉善圣莱斯绒业有限公司 一种基布自动送料装置
CN103010796B (zh) * 2012-12-06 2016-02-17 嘉善圣莱斯绒业有限公司 一种基布自动送料装置

Also Published As

Publication number Publication date
EP0086270A1 (fr) 1983-08-24
DE3203452A1 (de) 1983-09-08
DE3203452C2 (de) 1986-02-13

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