EP1303403A1 - Procede de regulation de la tension d'une bande de matiere - Google Patents

Procede de regulation de la tension d'une bande de matiere

Info

Publication number
EP1303403A1
EP1303403A1 EP01962576A EP01962576A EP1303403A1 EP 1303403 A1 EP1303403 A1 EP 1303403A1 EP 01962576 A EP01962576 A EP 01962576A EP 01962576 A EP01962576 A EP 01962576A EP 1303403 A1 EP1303403 A1 EP 1303403A1
Authority
EP
European Patent Office
Prior art keywords
web
cylinder
cylinders
tension
change
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01962576A
Other languages
German (de)
English (en)
Other versions
EP1303403B1 (fr
Inventor
Michael Heinz Fischer
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
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1303403A1 publication Critical patent/EP1303403A1/fr
Application granted granted Critical
Publication of EP1303403B1 publication Critical patent/EP1303403B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • 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
    • B41F13/025—Registering devices
    • 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
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
    • 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
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B65H2511/224—Nip between rollers, between belts or between rollers and belts

Definitions

  • the invention relates to methods for regulating a web tension according to the preamble of claims 1 or 2.
  • EP 0951 993 A1 discloses a drive for a rotary printing press which contains a register, a longitudinal expansion of the printing material web being determined from the web tension and operating values of the drives, and being compensated for by adjusting the circumferential register on the cylinders or the register rollers.
  • the invention has for its object to provide methods for controlling a web tension.
  • the printing units or units can be regulated in a simple manner via the prevailing tension or tension of the web, for example the printing material or paper web. This is done by changing the pressure provided between the cylinders acting together via the web, advantageously in the case of “rubber-against-rubber pressure” of the two interacting transfer cylinders of a printing unit.
  • the conveying behavior of the web through a printing machine is subject to many influences such as the tension / elongation characteristics of the respective paper and thus the prevailing tension, the instantaneous moisture, the sensitivity to moisture, the penetration behavior of moisture into the web, and the position of the roll during its manufacture in the reel, which is reflected, for example, in different winding hardness and location-dependent fluctuations in the modulus of elasticity. It also depends on the lifts and the contact pressure.
  • the conveying behavior of the web through one or more printing units of the printing press can be influenced and regulated in an advantageous manner by means of the method, without a change of rubber blankets of different thicknesses or a change in the procedure, for example a change in the damping, being necessary.
  • a change in the tension of the web can be counteracted during production by changing the conveying behavior.
  • the use of different rubber blankets or different types of paper is also possible, since the conveying behavior and the print quality can be changed by changing the distance, not with the rubber blanket thickness.
  • rubber blankets from certain manufacturers have a "negative promotion”, i.e. the web is "braked”, and others "positive promotion”, i.e. the web is "pushed" in addition to processing in the nip point.
  • the conveying behavior also depends on the contact pressure of the rubber blankets and the paper web.
  • the transfer cylinders are driven in pairs with their own drive.
  • the forme cylinders, together with the inking and dampening units, which work together with the transfer cylinders, are specially driven and only synchronized with the transfer cylinders by electrical engineering.
  • the resulting advantages include the avoidance of, for example, gear wheel play when the transfer and forme cylinders are mechanically coupled, and an almost torsionally rigid and angularly synchronous drive of the forme cylinders in relation to the transfer cylinders.
  • Figure 1 is a schematic representation for guiding a web from the infeed unit via four printing units and a second pull roller to a funnel infeed roller.
  • Fig. 2 is a schematic representation of the tension of the web in continuous printing
  • Fig. 3 is a schematic representation of a rubber-to-rubber printing unit without showing the inking and possibly dampening unit;
  • Fig. 4 is a schematic representation of a rubber / impression cylinder printing unit without depicting the inking and possibly dampening unit; 5 shows an exemplary dependency of the setpoints for the power consumption of the drives for the paired transmission cylinders;
  • Fig. 6 is a schematic representation of the control loop for a printing group i.
  • 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 a web-fed rotary printing press.
  • the web B runs in the transport direction T from the roll changer 01 via a feed unit 02 with a drawing roller 03 through, for example, printing units 06 to 09 to a second drawing roller 11.
  • the second pull roller 11 is followed, for example, by turning bars, cutting knives, further pull or guide rollers (not shown) and ultimately a hopper feed roller 12.
  • the main pull rollers 03; 11 are preferably each with its own drive 13; 14 and a drive control 16; 17 equipped.
  • the voltages S1; S2; S3; S4 of web B measured. This can take place, for example, via measuring rollers or the power consumption of the drive motors of the traction elements.
  • the starting point for the adjustment of the tension of the web B are, in particular if several webs B are combined at the funnel inlet at the funnel inlet by means of the funnel inlet roller 12, the absolute and relative tensions S4 of the individual webs B on the funnel inlet roller 12 with respect to one another (several webs indicated in FIG. 1) ). Accordingly, the tension of the web B is adjusted starting from the desired level on the hopper inlet roller 12.
  • the basic level of the tension of the web B is preferably determined by adjustment on the feed mechanism 02.
  • a change in the level for the tension of the web B is also advantageous This is done by changing the tension S2 at the infeed unit 02.
  • the first pull roller 03 is therefore operated with a lag compared to the machine speed.
  • the second drawing roller 11 is usually operated with an advance compared to the machine speed of the rotating cylinders 18, for example the transfer cylinders 18.
  • the pull rollers 03; 11 and the hopper infeed roller 12 and, if appropriate, drives located between the second pull roller 11 and the hopper infeed roller 12 can be regulated for speed, torque or rotational position for production printing.
  • the pull roller 03 can be regulated in such a way that the tension S2 between the feed unit 02 and the first printing unit 06 is continuously returned to a desired value.
  • a basic setting of the voltages S2 and S3 during continuous printing before the first printing unit 06 and after the last printing unit 09, as shown schematically in FIG. 2, is carried out using conventional control technology, for example via the web tension, speed or position-controlled pull roller 03, also the funnel feed roller 12 and / or dancer rollers, not shown, are produced.
  • Symmetrical and stationary fan-out designs in the cross register can also be taken into account here.
  • the conveying behavior and tension S5 to S7 of web B change when the printer is switched on and water and ink are added, when changing to a different paper type or when changing the process parameters such as adding the amount of dampening solution
  • the paper properties can change significantly as the path T moves, which in turn results in a different conveying behavior of the web B as it runs through the printing units, for example 06 to 09.
  • the humidity is partly. even before reaching the third pressure point, e.g. B. here of the third printing unit 08, completely penetrated into the web B.
  • a distance a between the two cylinders 18 each acting together via the web B is Printing unit 06, 07, 08, 09 changeable (Fig. 3). This can be done in such a way that a stop for the pressure-on position can be changed.
  • the path B runs between the cylinders 18, which can be moved radially relative to one another at a distance a, and is clamped between them in the pressure-on position.
  • the two cylinders 18, which can be changed relative to one another at a distance from each other, represent two transfer cylinders 18 in rubber-to-rubber printing.
  • This change in the distance a for example by a change Aa between the two cooperating transfer cylinders 18, preferably takes place in such a way that a distance b in each case between the transfer cylinder 18 and a cylinder 19 cooperating therewith, e.g. B. a forme cylinder 19 is preserved.
  • the transfer on and down positions of the transfer 18 and forme cylinder 19 take place relative to one another by pivoting eccentric bushes which receive the pins of the transfer 18 and forme cylinder 19.
  • the change in the distance a can take place, for example, by a second device, the change in the distance a not having to result in a change in the distance b. This can be achieved, for example, by a second eccentricity of the eccentric bushes receiving the pins.
  • an existing paper thickness setting provided on the machine can also be used.
  • a linear displacement of one of the transfer cylinders 18 is also conceivable.
  • the change in the distance a takes place via the setting of a second eccentric bushing on one of the two cooperating transfer cylinders 18.
  • the setting of the distance a in the example the setting of the second eccentric bushing, takes place by means of an actuator 21, for example hydraulic, pneumatic, mechanical, electrical or in combination.
  • a change in the distance a is possible, for example, by the value of the change ⁇ , which increases or decreases the Pressure gap d results.
  • the setting of the actuator 21 and thus the change ⁇ a of the distance a can be carried out by the operator himself, for example from a control station via a value for the change ⁇ a transmitted to the actuator 21 as the control value ⁇ a or on the printing unit by pressing an appropriate button.
  • the actuator 21 adjusts a stop against which the respective transfer cylinder 18 is placed in the print-on position. The operator can thus influence the conveying behavior of the web B between the printing units 06 to 09 during the production run, while production is running.
  • control of the conveying behavior of the web B between the printing units 06 to 09 takes place automatically and is integrated, for example, in a control concept for the tension of the web B, which stresses and strains before the first printing unit 06 and after the last printing unit 09 for compensation of changes in web B stretch due to changes in paper properties.
  • the control of the conveying behavior of the web B in or between the printing units 06 to 09 is advantageously carried out using parameters of the drives 22.
  • An actual value X-actual, a parameter X-actual ! is measured on the drive 22 in the printing unit i and with a setpoint X setpoint. compared.
  • a deviation ⁇ is used for regulation and, if necessary, for changing the distance a between the cylinders 18.
  • the drive 22 of the transfer cylinder 18 is preferably regulated to a constant peripheral speed or angular speed.
  • the regulation of the conveying behavior of the web B in or between the printing units 06 to 09 is preferably carried out via a power consumption P actual (for printing unit i) of the drives for the cylinders 18 interacting with the web B, in the example the transfer cylinder 18 Around the foot of the forme cylinder 19 and possibly with these mechanically coupled inking and / or dampening units (not shown) at the To keep the measurement of the power consumption as low as possible, the two transfer cylinders 18 per printing unit 06 to 09 are preferably driven in pairs by their own drives 22, and the form cylinders 19 interacting with them, together with the associated dyeing and, if appropriate, dampening units, are driven by their own drives 23.
  • P actual for printing unit i
  • the two transfer cylinders 18 per printing unit 06 to 09 are preferably driven in pairs by their own drives 22, and the form cylinders 19 interacting with them, together with the associated dyeing and, if appropriate, dampening units, are driven by their own drives 23.
  • each pair of transfer cylinders 18 is mechanically coupled, for example via gear wheels or belts.
  • each transfer cylinder 18 can also be individually driven and electronically synchronized. A change in the voltage or the conveying behavior pulls a change in the power consumption P-actual at the preferably speed-controlled drives 22. after itself.
  • the power consumption P-Actual, by the drives 22 of a pair of cylinders 18 interacting with the web B, provided that it is standardized accordingly, is a measure of the work performed by the drive 22 per unit of time, which in turn is a measure of the conditions of the Voltages S2; S5; S6; S7; S3 before and after the cylinders 18 and for the conveying behavior of the web B.
  • setpoints P setpoint (printing unit i) for the consumption of the power of the drives 22 are defined for the successive printing units 06 to 09. As a rule, these are different from one another for the printing units 06 to 09 which are passed through one after the other in the transport direction T (FIG. 5).
  • these target values P-target 06 increase from the first printing unit 06 with P-target 06 approx. 4 kW to the fourth printing unit 09 with P-target 09 approx. 7 kW.
  • the current power consumption P-actual is compared with the respective target value P-target, or the differences ⁇ P jj Tiit with the target value ⁇ P ,, - -set. If a deviation ⁇ or. ⁇ , j From the setpoint P setpoint. or ⁇ P J , -Soll measured, this is processed as shown schematically in Fig. 6, processed in the control loop and a change in the distance a by the value ⁇ a effected via the actuator 21. This results in a larger or smaller printing gap d or rubber blanket protrusion between the two transfer cylinders 18 acting together and thus a changed conveying behavior of the web B in the printing unit i in question (with i from 06; 07; 08; 09). The changed conveying behavior of the web B now in turn changes the power consumption P-actual, the drive 22 of the i-th printing unit. This power consumption P-Islj is monitored and returned to the control loop.
  • the parameter z. B be an angular velocity, which changes with changed voltages or conveying behavior. This change can now be counteracted again by changing the distance a.
  • the transfer cylinder 18 does not interact via the web B with a second transfer cylinder 18, but with an impression cylinder 23 (FIG. 4), the transfer cylinder 18 is turned on the impression cylinder 23 via the web B to the impression cylinder 23 or vice versa .
  • the distance a between the transfer cylinder 18 and the cooperating counter-pressure cylinder 23 is changed.
  • the described method also includes variants, wherein an impression cylinder 23 interacts with two or more transfer cylinders. Changes in the respective tension of the web B in the print-on position are made by varying the distance a between the impression cylinder 23 and the blanket cylinder 18.
  • the two cylinders 18; 23 can also be arranged elsewhere in a printing press, in a paper machine or in a rolling mill, for example in a coating device, a dryer, in the superstructure, a coating or rolling device, a calender or in other devices guiding a web B.
  • a change in the tension ratios or a change in the conveying behavior is determined via a characteristic variable characterizing the tension relationships. It can also have a size other than the power consumption P-Ist., Z. B. a change in angular velocity in the case of cylinders 18 controlled with a constant torque; 23, or a direct voltage measurement.
  • the change in this variable represents a measure of the mutually influencing variables “tension” and “delivery behavior”. In particular, it shows a change in the ratios of the tension S2; S3; S5; S6; S7 of the web B before and after the printing units 06; 07; 08; 09 or a change in the resulting funding behavior.
  • the deviation of the characteristic variable characterizing the tension relationships from the target value X target is now used to determine the distance a - which influences the conveying behavior of the web B - between the cylinders 18; 23 to change.
  • the printing units 06; 07; 08; 09 are thus at an approximately constant voltage S2; S3; S5; S6; S7 of the web B in front of, behind and / or between the printing units 06; 07; 08; 09 adjustable. LIST OF REFERENCE NUMBERS

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)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Discharge Heating (AREA)

Abstract

Procédé de régulation de la tension (52, 53, 55, 56, 57) d'une bande de matière dans une machine d'impression rotative (06, 07, 08, 09) qui comporte au moins un groupe d'impression pourvu d'au moins un premier et un deuxième cylindre entre lesquels est tendue une bande, les deux cylindres étant entraînés par au moins un appareil moteur. La modification de l'écart (a) entre les deux cylindres permet d'influencer la tension de la bande avant, entre et après les groupes d'impression.
EP01962576A 2000-07-22 2001-07-19 Procede de regulation de la tension d'une bande de matiere Expired - Lifetime EP1303403B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10035787A DE10035787C2 (de) 2000-07-22 2000-07-22 Verfahren zur Regelung einer Bahnspannung
DE10035787 2000-07-22
PCT/DE2001/002717 WO2002007974A1 (fr) 2000-07-22 2001-07-19 Procede de regulation de la tension d'une bande de matiere

Publications (2)

Publication Number Publication Date
EP1303403A1 true EP1303403A1 (fr) 2003-04-23
EP1303403B1 EP1303403B1 (fr) 2008-09-10

Family

ID=7649890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01962576A Expired - Lifetime EP1303403B1 (fr) 2000-07-22 2001-07-19 Procede de regulation de la tension d'une bande de matiere

Country Status (7)

Country Link
US (1) US6810812B2 (fr)
EP (1) EP1303403B1 (fr)
JP (1) JP4108471B2 (fr)
AT (1) ATE407801T1 (fr)
AU (1) AU2001283779A1 (fr)
DE (2) DE10035787C2 (fr)
WO (1) WO2002007974A1 (fr)

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DE10121945B4 (de) * 2001-05-05 2007-04-05 Koenig & Bauer Ag Vorrichtung zum Einziehen einer Materialbahn
DE10129762B4 (de) * 2001-06-20 2004-07-29 Koenig & Bauer Ag Druckeinheit
DE10135773C5 (de) * 2001-07-23 2009-07-09 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zum Steuern von Antrieben einer Druckmaschine
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DE10225824B4 (de) * 2002-06-11 2006-11-02 Koenig & Bauer Ag Verfahren zur Einstellung einer Bahnspannung
DE10228242B4 (de) * 2002-06-25 2004-09-16 Koenig & Bauer Ag Druckwerk einer im wasserlosen Offsetdruck arbeitenden Rotationsdruckmaschine mit zwei Druckstellen
DE10303122B4 (de) * 2002-09-27 2005-10-06 Koenig & Bauer Ag Verfahren zur Regelung der Bahnspannung eines Mehrbahnsystems
DE10304495B4 (de) * 2003-02-05 2015-04-16 Koenig & Bauer Aktiengesellschaft Verfahren und Anordnung für die Synchronisierung eines elektrischen Einzelantriebes
DE10335888B4 (de) * 2003-08-06 2008-03-13 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zum Regeln des Gesamt-Schnittregisterfehlers einer Rollenrotationsdruckmaschine
DE10335885A1 (de) * 2003-08-06 2005-03-17 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Regelung der Bahnzugkräfte und der Schnittregisterfehler einer Rollenrotationsdruckmaschine
DE10335887B4 (de) * 2003-08-06 2007-11-08 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zum Regeln eines Schnittregisterfehlers und einer Bahnzugkraft einer Rollenrotationsdruckmaschine
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DE102007050891A1 (de) * 2007-10-24 2009-04-30 Siemens Ag Auf der Streuung einer Istgröße eines Walzguts basierende Adaptierung eines Reglers in einem Walzwerk
DE102008053406A1 (de) * 2008-10-27 2010-04-29 Robert Bosch Gmbh Verfahren zur automatischen Achskorrektur bei einer Bearbeitungsmaschine zur Bearbeitung einer Warenbahn
DE102008056132A1 (de) 2008-11-06 2010-05-12 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung
DE102009016206A1 (de) * 2009-04-03 2010-10-14 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung
ES2348843B1 (es) * 2009-05-14 2011-10-07 Blanver Farmoquimica Ltda. Procedimiento para la preparacion de celulosa microcristalina.
CN103569414B (zh) * 2013-10-23 2015-09-09 广州市一路高包装机械技术有限公司 袋成形装置及包装机
DE102016214963A1 (de) * 2016-08-11 2018-02-15 Robert Bosch Gmbh Bahnverarbeitungsmaschine mit mehreren Materialbahnen und Zugkraftregelung
CN109318539A (zh) * 2018-12-13 2019-02-12 佛山科学技术学院 一种纸张复合机
DE102020114894A1 (de) * 2020-06-04 2021-12-09 Broetje-Automation Gmbh Vorrichtung zur Verarbeitung von faserverstärktem Kunststoff
IT202100032348A1 (it) * 2022-01-11 2023-07-11 Ipi Srl Metodo e apparato per la formazione di contenitori riempiti di un liquido e sigillati

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Also Published As

Publication number Publication date
JP4108471B2 (ja) 2008-06-25
DE10035787C2 (de) 2002-05-16
DE50114313D1 (de) 2008-10-23
AU2001283779A1 (en) 2002-02-05
DE10035787A1 (de) 2002-01-31
WO2002007974A1 (fr) 2002-01-31
ATE407801T1 (de) 2008-09-15
JP2004504190A (ja) 2004-02-12
EP1303403B1 (fr) 2008-09-10
US6810812B2 (en) 2004-11-02
US20030188661A1 (en) 2003-10-09

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