EP2356053A1 - Procédé de réglage de la tension d'une bande - Google Patents

Procédé de réglage de la tension d'une bande

Info

Publication number
EP2356053A1
EP2356053A1 EP09778236A EP09778236A EP2356053A1 EP 2356053 A1 EP2356053 A1 EP 2356053A1 EP 09778236 A EP09778236 A EP 09778236A EP 09778236 A EP09778236 A EP 09778236A EP 2356053 A1 EP2356053 A1 EP 2356053A1
Authority
EP
European Patent Office
Prior art keywords
web tension
web
nip
control command
processing
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
EP09778236A
Other languages
German (de)
English (en)
Other versions
EP2356053B1 (fr
Inventor
Stephan Schultze
Holger Schnabel
Mario Goeb
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2356053A1 publication Critical patent/EP2356053A1/fr
Application granted granted Critical
Publication of EP2356053B1 publication Critical patent/EP2356053B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65H23/04—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
    • 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
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/264—Calculating means; Controlling methods with key characteristics based on closed loop control
    • B65H2557/2644—Calculating means; Controlling methods with key characteristics based on closed loop control characterised by PID control
    • 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 present invention relates to a method for adjusting the web tension in a processing machine, a processing machine, a corresponding computer program and a corresponding computer program product.
  • the invention is not limited thereto, but rather directed to all types of machine tools in which a web is processed.
  • the invention is particularly applicable to printing machines such as e.g. Newspaper printing machines, commercial printing presses, gravure printing machines, inline flexographic printing machines, packaging printing machines or securities printing machines, and processing machines, such as printing machines. Bag machines,
  • Enveloping machines or packaging machines can be used.
  • the web can be made of paper, cloth, cardboard, plastic, metal, rubber, in foil form, etc.
  • driven axes rail transport axes
  • non-driven axles such as deflection, Leit-, Drying or cooling rollers moved.
  • the web is simultaneously processed by usually also driven processing axes, for example.
  • the web tension of the web is influenced, for example, via so-called nip points which clamp the web frictionally, positively or non-positively. These are usually driven transport or processing plants.
  • a nip is usually formed by a printing unit, in which a frictional unit between the driven pressure cylinder, the impression roller and the material web consists.
  • the web is divided into web tension sections, wherein a web tension section is limited by two nips. Within a web tension section, further driven and / or non-driven axles may be arranged. Often the entire web is subdivided into several web tension sections, sometimes with different web tension setpoints. To maintain the setpoints usually a web tension control is used.
  • the invention is therefore based on the object to provide an improved method for adjusting the web tension, which also takes into account non-adjustable clamping points.
  • a web tension control can be provided, which can be flexibly adapted to the given circumstances of the underlying machine by combining upstream and downstream strategies.
  • web tension sections can be influenced decoupled, whose downstream terminal point is not adjustable.
  • no control strategies are known which would enable a decoupling of the web tension adjustment over non-adjustable clamping points.
  • an adjustment of the clamping point downstream of the web tension section takes place. At least one subsequent nip can be adjusted dynamically or statically taking into account different timers and / or amplitudes.
  • the relevant terminal point is not adjusted. At least one before lying terminal point is statically or dynamically adjusted taking into account different timers and / or amplitudes.
  • Adjustment of a web tension deviation largely decoupled.
  • only the web tension in the web tension section to be corrected changes without affecting the subsequent or preceding sections.
  • the spoilage is significantly reduced and the machining accuracy increased.
  • the invention in addition to the adjustment of the web tension also includes the setting of a tensile force or an elongation, which also directly cause a change in voltage.
  • a web tension control is performed. It is understood by those skilled in the art that the adjustment according to the invention can be used as part of a control.
  • the precontrol is performed with different amplitudes, for example weighted, and / or different time behavior.
  • the positioning commands for the clamping points which are adjacent to the non-adjusted clamping point can have a greater amplitude and / or the time setting command curve can show a different, in particular greater, increase or decrease than for clamping points which are further away.
  • the at least one clamping point located in front of the first in the web tension profile and / or the at least one in the web tension course are following the second nip located statically and / or dynamically piloted in response to the first control command.
  • the type of precontrol, ie static or dynamic, can be selected and set separately for each prestressing point to be controlled on the basis of the circumstances.
  • the upstream feedforward control can, for example, comprise a static behavior, for example a pure proportional behavior.
  • a dynamic proportional, integral, delay or differential behavior is suitable for the downstream feedforward control.
  • "dynamic" is to be understood as a time-varying behavior in which the output variable varies over time even with a constant input variable, for example proportional elements with delay PT1, PT2, PTn, differential elements DT1, DT2, DTn, integral elements ItI, Itn , Deadtime members or any combinations thereof.
  • the parameters of the dynamic coupling can be adapted to the printing press speed, preferably in proportion to the reciprocal press speed.
  • the parameters of the dynamic coupling can, in particular, be adapted proportionally to the web length and / or web width.
  • the parameters of the coupling can also be adapted to the substrate type (modulus of elasticity). Adaptation of the parameters and timers may be accomplished using fuzzy techniques, model-based techniques, e.g. Model follow-up, observer techniques or Kalman techniques are used.
  • an automatic or automatic adaptation of dynamic timers in particular to the web speed and / or the lengths can be carried out.
  • an independent speed and / or length adaptation and, as a result, an independent adaptation of the dynamic time elements is carried out.
  • all terminal points arranged in the web tension voltage path before the first nip point which are designed as a machining device, are prestressed statically as a function of the first positioning command.
  • clamping points not designed as processing devices such as e.g. Infeed, Unwinder, etc. are controlled by the system.
  • the upstream and downstream pilot control is expediently carried out only up to the last nip, which would be influenced by the web tension setting.
  • different units such as, for example, cooling or drying devices, are known which, in certain cases, decouple the web tension on account of the material influencing, so that a change in the web tension can not be achieved by means of these agglomerates. gate out.
  • Web tension sections with such aggregates are referred to in these cases as "self-compensating" or "decoupling".
  • only the clamping points of non-self-compensating web tension sections are thus pre-controlled. In other words, the precontrol takes place from the influenced web tension section upstream and / or downstream to the respectively next self-compensating web tension section.
  • the web tension is determined in the web tension sections by means of measuring members, preferably load cells, by means of the drive torque of a clamping point delimiting this web tension section and / or by means of observers (control technology).
  • the web tension is set in a web tension section by means of angular adjustment, speed control and / or limiting the drive torque of at least one clamping point delimiting this web tension section.
  • An arithmetic unit according to the invention is, in particular programmatically, adapted to carry out a method according to the invention using a processing machine.
  • the invention additionally relates to a computer program with program code means in order to carry out all the steps in accordance with a method according to the invention when the computer program is executed on a computer or a corresponding arithmetic unit.
  • the computer program product provided according to the invention with program code means which are stored on a computer-readable data Carrier are stored for performing all steps according to a method of the invention, when the computer program is executed on a computer or a corresponding computing unit.
  • Suitable data carriers are, in particular, floppy disks, hard disks, flash memories, EEPROMs, CD-ROMs, DVDs, and the like. It is also possible to download a program via computer networks (Internet, intranet, etc.).
  • Figure 1 shows a schematic representation of an example of a common upstream strategy with a web tension deviation in a web tension section.
  • FIG. 1 shows a schematic representation of an example of a control strategy according to the invention in a web tension deviation in a web tension section.
  • FIG. 1 describes a known upstream control strategy using the example of web tension control in a printing press.
  • a schematic section of a printing machine 10 is shown, in which a material web 101 is transported and processed by five clamping points formed here as printing units 1 to 5. Between each two adjacent clamping points, a web tension section is formed.
  • a web tension section 12 is bounded by the printing units 1 and 2, a web tension section 23 through the printing units 2 and 3, a web tension section 34 through the printing units 3 and 4 and a web tension section 45 through the printing units 4 and 5.
  • the printing machine also has here web tension sensors designed as load cells 121 to 124 for determining the web tension or the tensile force in the respective web tension sections.
  • the physical parameters, namely the length 1, the strain ⁇ and the web tension or tensile force F of the individual web tension sections are also indicated in the figure.
  • the printing units 1 to 3 are adjusted in the illustrated upstream strategy, whereby the web tension in the web tension sections 12 and 23 can be decoupled from the change in the web tension section 34.
  • the known solution it is not possible to decouple also the web tension in the web tensioning section 45 from the change in the web tension section 34.
  • a dynamic precontrol of the printing unit 5 is performed.
  • P I
  • T l 34 / v
  • v denotes the path velocity.
  • the lengths 1, the moduli of elasticity E and the web speed v can preferably be used for automatically adapting the parameters of the dynamic elements, in particular the time constants.
  • the invention is particularly suitable for web tension control in machines that due to special circumstances have a non-adjustable clamping point.
  • the example of FIG. 2 would be the printing unit 4.
  • nip 3 To decouple the web tension adjustment in the web tension section 34 durdh change the angular velocity at nip 3 is both a static precontrol of the terminal points 1 and 2 as well as a dynamic precontrol of the nip 5.
  • nip 1 components eg unwinders and / or feed-in
  • all or selected further terminal points 6, ..., n and optional extension unit and Aufwickler can be pre-controlled.
  • the actual web tension required for the control can be measured via load cells, calculated or observed model-based.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

L'invention concerne un procédé de réglage de la tension d'une bande sur une machine de façonnage destinée à façonner un produit en bande (101), en particulier sur une machine d'impression sans arbre (100). Pour le réglage de la tension de la bande sur un premier segment de tension de bande (34) délimité vers l'amont par un premier point de serrage (3) et vers l'aval par un deuxième point de serrage (4), le premier point de serrage (3) reçoit une instruction de positionnement et au moins un point de serrage (1, 2) se trouvant sur le trajet de tension de la bande avant le premier point de serrage (3) et au moins un point de serrage (5) se trouvant sur le trajet de tension de la bande après le deuxième point de serrage (4) sont commandés en fonction de la première instruction de positionnement, le deuxième point de serrage (4) n'étant pas corrigé.
EP09778236.1A 2008-11-06 2009-09-01 Procédé de réglage de la tension d'une bande Not-in-force EP2356053B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008056132A DE102008056132A1 (de) 2008-11-06 2008-11-06 Verfahren zur Bahnspannungseinstellung
PCT/EP2009/006310 WO2010051874A1 (fr) 2008-11-06 2009-09-01 Procédé de réglage de la tension d'une bande

Publications (2)

Publication Number Publication Date
EP2356053A1 true EP2356053A1 (fr) 2011-08-17
EP2356053B1 EP2356053B1 (fr) 2014-02-26

Family

ID=41232312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09778236.1A Not-in-force EP2356053B1 (fr) 2008-11-06 2009-09-01 Procédé de réglage de la tension d'une bande

Country Status (4)

Country Link
US (1) US8985021B2 (fr)
EP (1) EP2356053B1 (fr)
DE (1) DE102008056132A1 (fr)
WO (1) WO2010051874A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010023A1 (de) * 2009-02-21 2010-08-26 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung bei einer Bearbeitungsmaschine
DE102009016206A1 (de) 2009-04-03 2010-10-14 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung
DE102009052330A1 (de) 2009-11-07 2011-05-12 Robert Bosch Gmbh Verfahren zum Regeln einer Regelgröße bei einer Bearbeitungsmaschine
DE102009052462A1 (de) * 2009-11-09 2011-05-12 Robert Bosch Gmbh Verfahren zum Betreiben einer Wicklereinrichtung
DE102010012291A1 (de) 2010-03-23 2011-09-29 Robert Bosch Gmbh Verfahren zur Bestimmung wenigstens eines Reglerparameters eines Bahnspannungs-Regelglieds
DE102010050821A1 (de) 2010-11-09 2012-05-10 Robert Bosch Gmbh Verfahren zur Regelung der Bahnspannung in einem einen Tänzer aufweisenden ersten Bahnspannungsabschnitt
DE102011014074A1 (de) 2011-01-04 2012-02-16 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung
DE102011105448A1 (de) 2011-06-24 2012-12-27 Robert Bosch Gmbh Verfahren zur Bahnzugkrafteinstellung
AT512359A3 (de) * 2011-12-29 2015-09-15 Bosch Gmbh Robert Verfahren zur Regelung einer Bahnzugkraft in einer Bearbeitungsmaschine
DE102012002724A1 (de) 2012-02-10 2013-08-14 Robert Bosch Gmbh Verfahren zur Regelung einer Bahnzugkraft in einer Bearbeitungsmaschine
DE102012002675A1 (de) 2012-02-10 2013-08-14 Robert Bosch Gmbh Verfahren zur Registerkorrektur bei einer Bahnbearbeitungsmaschine mit einem Verzögerungsabschnitt
DE102013214731A1 (de) 2013-07-29 2015-01-29 Robert Bosch Gmbh Computerimplementiertes Verfahren zur Bahnzugkrafteinstellung

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DE4012396A1 (de) * 1990-04-19 1991-10-31 Roland Man Druckmasch Druckmaschinenanlage
US6427590B1 (en) * 1992-10-12 2002-08-06 Heidelberger Druckmaschinen Ag Drive for a printing press with a plurality of printing units
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
EP0950519B1 (fr) * 1998-04-16 2001-08-29 ABB Industrie AG Procédé de contrôle automatique du repérage d'impression et de coupe dans des machines d'impression rotatives avec plusieurs bandes
US6546871B1 (en) * 1998-12-04 2003-04-15 Koenig & Bauer Aktiengesellschaft Method for adjusting a register
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Also Published As

Publication number Publication date
DE102008056132A1 (de) 2010-05-12
EP2356053B1 (fr) 2014-02-26
WO2010051874A1 (fr) 2010-05-14
US8985021B2 (en) 2015-03-24
US20120048984A1 (en) 2012-03-01

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