EP1252018B1 - Procede pour reguler la tension d'une bande dans une rotative - Google Patents

Procede pour reguler la tension d'une bande dans une rotative Download PDF

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Publication number
EP1252018B1
EP1252018B1 EP01909422A EP01909422A EP1252018B1 EP 1252018 B1 EP1252018 B1 EP 1252018B1 EP 01909422 A EP01909422 A EP 01909422A EP 01909422 A EP01909422 A EP 01909422A EP 1252018 B1 EP1252018 B1 EP 1252018B1
Authority
EP
European Patent Office
Prior art keywords
web
printing unit
speed
tension
determined
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 - Lifetime
Application number
EP01909422A
Other languages
German (de)
English (en)
Other versions
EP1252018A1 (fr
Inventor
Erhard Herbert GLÖCKNER
Dieter Koch
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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
Priority claimed from DE10027471A external-priority patent/DE10027471A1/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1252018A1 publication Critical patent/EP1252018A1/fr
Application granted granted Critical
Publication of EP1252018B1 publication Critical patent/EP1252018B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/17—Deformation, e.g. stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/31—Tensile forces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/42—Means for tensioning webs

Definitions

  • the invention relates to a method for regulating a web tension in a Rotary printing machine according to the preamble of claim 1.
  • EP 09 51 993 A1 is a register drive for one Rotary printing machine is known, wherein a longitudinal expansion of the printing web Web tension values and operating values of the drives determined, and by adjusting the circumferential register on the cylinders or the register rollers is compensated. A The change in transverse elongation determined by a web width detection sensor is transmitted via a change in the setpoint of the tension roll regulated to constant web tension recycled.
  • US 30 25 791 A is a method for controlling the drives of a printing press disclosed with the aim of a constant stretch.
  • the measurement of the strain takes place here near the first printing unit by comparing the angular position of the printing unit and then the position of a mark on the substrate.
  • a change in the Relative position between the angular position of the printing unit and the position of the mark a change in tension for the substrate web in the feed unit.
  • DE 29 51 246 C2 discloses a device of a printing press by means of which it is possible, the speed of a paper web at different points, in the example the drive of the printing unit on one side and that of the pull roller on the other side, relative to each other.
  • the speed of the pulse can be determined, which are fed to an engine control circuit.
  • the invention has for its object a method for controlling a To create web tension in a rotary printing press.
  • a printing tower or one entire, multi-web rotary printing press takes place at least temporarily Print job without water and / or paint, d. H. with a dry track.
  • a pressure adjustment of the cylinders takes place before and after the printing units largely same web tension, since the web is not clamped by the printing units.
  • the web tension before the first and after the last printing unit are approximately the same. This is the case if the Circumferential speeds of the last printing unit and subsequent drawing roller approximately are the same, which can be ensured in an advantageous manner with the invention.
  • the paper web expands under the influence of the dampening solution and / or the color in both the longitudinal and transverse directions based on the transport direction. This strikes, especially in multi-color printing with free path lengths between adjacent printing points, as widening of the printed image or several juxtaposed printed images with progressive path through the Pressure points. This so-called fan-out effect can, as long as the effect on everyone Pressure point remains almost constant over time, at least in part, for example correspondingly spaced apart printing forms are compensated.
  • the stretch behavior of the paper web is subject to many influences, for example the stress / strain characteristics of the respective paper and thus the prevailing tension, the current humidity, the sensitivity to moisture, the penetration behavior and even the position of the roll in its manufacture in Drum, which is reflected, for example, in different winding hardness.
  • the stretch is therefore not because constant paper properties of the rolling paper web itself and because of changing and sometimes fluctuating operating parameters on the printing press stationary.
  • the paper web on the roll is subject to an uneven pattern Winding during production, a location-dependent fluctuation in the modulus of elasticity, or other irregularities.
  • These properties are usually from paper type to Paper type very different.
  • the properties can also change with the same type of paper differ significantly from role to role.
  • affect one fluctuating web tension, changing printing speeds, fluctuations in the humidification or a roll change the stretch of the paper web so that the Elongation in the longitudinal and transverse directions in relation to the transport direction is not temporally are stationary.
  • the method according to the invention can be used to ensure that the Start-up process guaranteed, a basic setting established, and above further fluctuations in the elongation, in the longitudinal and or transverse elongation, be balanced.
  • the one arranged behind the last printing unit Pull roller in the start-up phase (without paint and water) speed-controlled with regard to a printing unit and torque-controlled during production of a predefinable setpoint.
  • the speeds of the drawing roller and printing unit are used to control the Pull-in unit used.
  • After reaching the production speed existing difference in the peripheral speeds of the leading in production Draw roller and the peripheral speed of the printing unit form a setpoint.
  • a Changing this difference indicates a change in elongation, longitudinal but also one Transverse stretch of the printing material web, and thus to a change in the image length the path B and / or close in the transverse and longitudinal register.
  • the torque control causes a brief change in the speed of the drive of the pull roller.
  • the relative Speed change in turn now causes the control of the feed mechanism, what ultimately the torque-controlled draw roller return to its "normal operation" leaves.
  • a change in the elongation or tension occurs after the last printing unit measured, however, a regulation takes place on the feed unit, which covers the entire Tension level of the paper web defined.
  • The is particularly advantageous Maintaining a constant web tension behind the pulling roller Combination of the torque-controlled pull roller with the control of the feed unit can be reached via the difference in peripheral speeds without additional measurement and control expenditure.
  • An almost stationary portion in the longitudinal expansion, e.g. B. for the purpose of presetting the Printing machine for the expected or measured operating and paper conditions, can e.g. B. by register adjustment on the cylinders, by register rollers or other facilities are compensated.
  • Fig. 1 shows schematically the course of a path B, z. B. a printing material web B or a paper web B, on its way through a printing press, in particular one Web printing press.
  • the web B runs in the transport direction T from Reel changer 01 via a feed unit 02 with a pull roller 03 through four printing units 06 to 09 to a second pull roller 11.
  • the second pull roller 11 for example, not shown turning bars, cutting knife, further train or Guide rollers and ultimately a hopper inlet roller 12.
  • the main pull rollers 03 and 11 are each with its own drive 13 and 14 and a drive control 16; 17 equipped.
  • the voltages S1; S2; S3 and S4 of web B measured. This can, for example, via measuring rollers or the power consumption of the drive motors the traction means.
  • the starting point for setting the web tensions are, especially if in Multiple web operation at the hopper inlet on the hopper inlet roller 12 to several webs B. a multilayer strand, the absolute and relative Tensions S4 of the individual webs B on the hopper inlet roller 12 to one another (several lanes indicated in Fig. 1). As a result, the Tension of the web B starting from the desired level on the Hopper inlet roller 12. This is preferably done by adjusting the feed mechanism 02 Level of web tension set. The web tension is also changed in advantageously by changing the voltage S2 on the feed mechanism 02 Tensioning the web B, the first pull roller 03 is therefore opposite the Machine speed operated with a lag. In production, d. H.
  • the second Draw roller 11 usually with an advance over the machine speed driven.
  • the machine speed is, for example, on a cylinder 18, for example, a transfer cylinder 18 of the last printing unit 09 measured.
  • the peripheral speed u09 can, for example, Phase position ⁇ 09 or the temporal change in the angle of rotation or phase days ⁇ ⁇ 09 or the position of a drive 19 or also by a marker and a Detector on the transfer cylinder 18 or another cylinder, such as. B. Forme cylinder or impression cylinder can be determined.
  • the pull roller 03 and the hopper inlet roller 12 and possibly between the second Pull roller 11 and hopper feed roller 12 lying drives can be used for operation be regulated with production speed and / or rotational position.
  • the pull roller 03 can be regulated such that the tension S2 between feed unit 02 and first printing unit 06 constantly to a setpoint is returned.
  • the pull roller 11 is in the print-on position, without water and / or paint, i. H. at dry web B, with regard to its peripheral speed u11 as a controlled variable regulated and operated with water and ink with torque control during production.
  • the pull roller 11 When water and paint are switched on, the voltage or Stretch behavior of the web B as it passes through the individual pressure points of the Printing units 06 to 09 and causes the voltage S3 to decrease after the last one Printing unit 09, since for the time being the pull roller 11 is still at the same peripheral speed u11 runs like the last printing unit 09.
  • the pull roller 11 is now in the following and operated under torque control during production. So with multi-track operation a trouble-free funnel infeed of the webs B is preferably preferred to the necessary, known gradation in the voltages S4 of several webs B to reach each other, after switching on water and paint before reaching the production speed, if possible only by adjusting the feed mechanism 02 suitable tension level of the web B. This can be done using, for example the pull roller 03 or one located in the feed unit 02, not shown Dancer roll take place.
  • a basic setting of the tensions during production, as schematically in Fig. 2 is shown, for example, on the web tension, speed or position-controlled draw roller 03, the also controlled hopper feed roller 12 and / or Dancer rolls not shown manufactured.
  • This usually voltage controlled state the web B takes into account with a lag of the pull roller 03 and an advance of the Pull roller 11 is already a stationary one based on the machine speed (expected or measured) proportion of a change in length of the web B, which gradually during the passage through the printing units 06 to 09 due to the effects of moisture he follows.
  • Symmetrical and stationary fan-out designs in the cross register can also be used already be considered here.
  • the peripheral speeds u09 of the printing unit 09 and u11 of the pull roller 11 can directly on one of the Printing unit 09 assigned cylinder, for example directly on the transfer cylinder 18th or directly on the pull roller 11, or by means of a drive 14 or 19 arranged encoder or an encoder can be determined.
  • the second The peripheral speed u11 or phase position ⁇ 11 ( ⁇ ⁇ 11) can also be at another Roller or another cylinder in the transport direction behind the last printing unit 09 be determined, e.g. B. by means of a rotary encoder on an additional measuring roller.
  • the deviation from the reference value ⁇ u-target can, for example, be a disturbance variable ⁇ are superimposed on a setpoint generator of the drive control 16.
  • the drive control 16 of the pull roller 03 can be torque-controlled, for example, one The voltage S2 is fed back.
  • One path of path B via a corresponding one Measuring roller 21 for measuring the tension S2 of web B is shown in broken lines in FIG. 1 shown.
  • the setpoint generator of the drive control 16 is the result of the deviation from Reference value ⁇ u-target corresponding disturbance variable ⁇ , for example as correction variable ⁇ S2 superimposed.
  • Such a correction variable ⁇ S2 can be stored, for example Curve can be taken or iteratively by raising or lowering the Voltage S2 take place until the difference ⁇ u of the peripheral speeds u09 and u11 again corresponds to the reference value ⁇ u target.
  • the peripheral speeds u09 and u11 are equal to the speed u09; u11 of path B (if path B is curved on the side of the contact) if the Slip is negligibly small.
  • the speeds u09; u11, or their difference ⁇ u the path B the disturbance variable ⁇ can be used for the regulation of the voltage S2 if it is in a different way be won. It is essential, however, that the speed u09 the Machine speed or the speed u09 of the web B in the area of Printing units 06; 07.08; 09 and the speed u11 the speed u11 the Represents web B behind the last printing unit 09.
  • the execution of the Traction roller 11 advantageous as torque-controlled during production.
  • Abrupt changes in the force acting on web B can be avoided for the roller 03 also on a drive control with DROOP behavior be used.
  • the setpoint S2-target, a correction variable ⁇ S2 is superimposed as an offset for the web tension S2 together with the actual value of voltage S2 using the DROOP function corresponding lagging of the pull roller 03 results.
  • the pull roller 03 or the feed mechanism 02 is regulated, so it is essential that the setpoint for the drive control 16 one from the difference ⁇ u determined disturbance variable ⁇ , for example as a correction variable ⁇ S2 of the desired one Voltage S2 is superimposed. If necessary or under certain circumstances, the Machine speed instead of the last printing unit 09 in the transport direction T with the peripheral speed u09 also determined on another printing unit 06 to 08 become.
  • the difference ⁇ u and the reference value ⁇ u-target are then, for example, from u11 and u08 etc. to be determined and processed as disturbance variable ⁇ .
  • a change in the elongation or tension will measured after the last printing unit 09, but regulation takes place at the intake unit 02, which defines the total tension level of the paper web B.
  • the intake unit 02 which defines the total tension level of the paper web B.
  • the Angular positions of one of the printing units 06 to 09 and the pull roller 11 are used become.
  • the strain ⁇ changes, the relative deviation deviates Angular position.
  • This difference value can then be used as an absolute value or as an absolute value Sign can be used as disturbance variable ⁇ for the control of the drive 13.
  • the procedure is for printing presses with stacked or side by side, with printing units combined to form bridge or H units, for rubber-against-rubber or rubber-against-steel printing units and other combinations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Rotary Presses (AREA)

Claims (9)

  1. Procédé de régulation d'une tension de bande dans une machine à imprimer rotative, une bande (B) passant au moins dans un groupe d'impression (06; 07; 08; 09), et où deux vitesses (u09; u11) sont mesurées en deux endroits différents et, par suite d'une modification d'une différence (Δu) des deux vitesses (u09; u11), une tension (S2) de la bande (B) en amont du premier groupe d'impression (06) est réglée, caractérisé en ce que, au moyen des deux vitesses (u09; u11), on détermine une modification de l'extension longitudinale en aval du dernier groupe d'impression (09) et on règle ainsi la tension en amont du premier groupe d'impression (06).
  2. Procédé selon la revendication 1, caractérisé en ce que :
    la première vitesse (u09) est déterminée comme vitesse périphérique (u09) sur un groupe d'impression (06; 07; 08; 09), et
    la deuxième vitesse (u11) est déterminée comme étant la vitesse périphérique (u11) sur un rouleau de traction (11) placé à la suite du dernier groupe d'impression (09) dans le sens de transport (T),
    la différence (Δu) des deux vitesses périphériques (u09; u11) étant fixée comme valeur de référence (Δu-consigne),
    pendant la progression de l'impression, une valeur réelle de la différence (Δu) est comparée à la valeur de référence (Δu-consigne),
    en ce qu'un écart entre la différence (Δu) et la valeur de référence (Δu-consigne) est utilisé en tant que grandeur perturbatrice (Δ) pour la régulation d'un groupe d'introduction (02).
  3. Procédé selon la revendication 2, caractérisé en ce que le rouleau de traction (11) est réglé pendant la progression de l'impression, en fonction d'un couple prédéterminable.
  4. Procédé selon la revendication 1, caractérisé en ce que la deuxième vitesse (u11) est déterminée en aval d'un dernier groupe d'impression (09), en utilisant un rouleau de mesure.
  5. Procédé selon la revendication 2, caractérisé en ce que la deuxième vitesse (u11) est déterminée à l'aide d'un codeur, monté sur le rouleau de traction (11).
  6. Procédé selon les revendications 1 ou 2, caractérisé en ce que la première vitesse (u09) est déterminée sur un dernier groupe de traction (09), en observant dans le sens de transport (T).
  7. Procédé selon la revendication 2, caractérisé en ce que la grandeur perturbatrice (Δ), appliquée sur une régulation d'entraínement (16) du rouleau de traction (03) disposé en amont du premier groupe d'impression (06), est guidée, de préférence en tant que grandeur de correction (ΔS2), à une valeur de consigne (S2-consigne) pour une tension (S2) agissant entre le groupe d'introduction (02) et le premier groupe d'impression (06).
  8. Procédé selon la revendication 1, caractérisé en ce que les vitesses (u09; u11) sont déterminées à partir des positions angulaires en rotation (ϕ09, ϕ11).
  9. Procédé selon la revendication 2, caractérisé en ce que le rouleau de traction (11) est réglé en fonction d'une vitesse (u09; u11) pendant qu'on est à la position en impression avec pressage, sans addition d'eau et/ou d'encre.
EP01909422A 2000-02-04 2001-01-05 Procede pour reguler la tension d'une bande dans une rotative Expired - Lifetime EP1252018B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10004933 2000-02-04
DE10004933 2000-02-04
DE10027471 2000-06-02
DE10027471A DE10027471A1 (de) 2000-02-04 2000-06-02 Verfahren zur Regelung einer Bahnspannung in einer Rotationsdruckmaschine
PCT/DE2001/000012 WO2001056792A1 (fr) 2000-02-04 2001-01-05 Procede pour reguler la tension d'une bande dans une rotative

Publications (2)

Publication Number Publication Date
EP1252018A1 EP1252018A1 (fr) 2002-10-30
EP1252018B1 true EP1252018B1 (fr) 2003-07-02

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ID=26004196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01909422A Expired - Lifetime EP1252018B1 (fr) 2000-02-04 2001-01-05 Procede pour reguler la tension d'une bande dans une rotative

Country Status (5)

Country Link
US (1) US6782818B2 (fr)
EP (1) EP1252018B1 (fr)
JP (1) JP3848162B2 (fr)
AT (1) ATE244142T1 (fr)
WO (1) WO2001056792A1 (fr)

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DE10303122B4 (de) * 2002-09-27 2005-10-06 Koenig & Bauer Ag Verfahren zur Regelung der Bahnspannung eines Mehrbahnsystems
DE10333626A1 (de) * 2003-07-24 2005-02-17 Robert Bürkle GmbH Vorrichtung zum Bedrucken von flächigen Werkstücken
NL1029042C2 (nl) * 2005-05-13 2006-11-14 Gear Chain Ind Bv Inrichting voor het tot voorbij de elasticiteitsgrens oprekken van de schalmen van een transmissieketting.
JP4722631B2 (ja) * 2005-09-07 2011-07-13 大日本スクリーン製造株式会社 印刷装置および張力制御方法
DE102006004307B4 (de) * 2006-01-31 2013-08-14 Windmöller & Hölscher Kg Verfahren zum Messen und Einstellen der Bahnspannung zwischen Farbwerken einer Mehrfarbenmaschine
JP4556966B2 (ja) * 2007-04-27 2010-10-06 トヨタ自動車株式会社 ウェブの搬送制御方法、及び搬送制御装置
DE102008056132A1 (de) * 2008-11-06 2010-05-12 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung
EP2327647A1 (fr) * 2009-11-25 2011-06-01 Baumüller Anlagen-Systemtechnik GmbH & Co. KG Procédé de fonctionnement d'au moins une machine traitant une bande de matériau, ainsi que presse ou autre machine correspondante
JP5549231B2 (ja) * 2010-01-13 2014-07-16 セイコーエプソン株式会社 印刷装置
JP2011143983A (ja) * 2010-01-13 2011-07-28 Seiko Epson Corp ロール紙供給装置及びそれを備えた印刷装置
DE102010012291A1 (de) * 2010-03-23 2011-09-29 Robert Bosch Gmbh Verfahren zur Bestimmung wenigstens eines Reglerparameters eines Bahnspannungs-Regelglieds
US20120189364A1 (en) * 2011-01-21 2012-07-26 Andrew Peter Kittleson Reducing drag on rotatable web drive member
DE102012106967B4 (de) 2012-07-31 2015-03-05 Océ Printing Systems GmbH & Co. KG Verfahren zur Ausführung einer Pausenfunktion während des Druckbetriebs bei einem Tintendruckgerät
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JP3180291B2 (ja) 1997-11-10 2001-06-25 株式会社ミヤコシ フォーム印刷機における用紙テンション制御装置
DE59902522D1 (de) 1998-04-22 2002-10-10 Wifag Maschf Registerhaltiger Antrieb eines Druckzylinders oder einer Schnittregisterwalze einer Rotationsdruckmaschine
DE19834725A1 (de) 1998-07-31 2000-02-03 Wifag Maschf Bahnspannungsregeleinrichtung
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CH694219A5 (fr) * 2000-02-10 2004-09-30 Bobst Sa Procédé de mise en repérage automatique d'impressions dans une machine rotative et dispositif pour la mise en oeuvre du procédé.
DE10035787C2 (de) * 2000-07-22 2002-05-16 Koenig & Bauer Ag Verfahren zur Regelung einer Bahnspannung

Also Published As

Publication number Publication date
WO2001056792A1 (fr) 2001-08-09
JP3848162B2 (ja) 2006-11-22
US6782818B2 (en) 2004-08-31
JP2003521399A (ja) 2003-07-15
ATE244142T1 (de) 2003-07-15
EP1252018A1 (fr) 2002-10-30
US20030015109A1 (en) 2003-01-23

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