EP1795470A1 - Procédé pour déterminer la tension d'une bande de matière - Google Patents

Procédé pour déterminer la tension d'une bande de matière Download PDF

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Publication number
EP1795470A1
EP1795470A1 EP06020362A EP06020362A EP1795470A1 EP 1795470 A1 EP1795470 A1 EP 1795470A1 EP 06020362 A EP06020362 A EP 06020362A EP 06020362 A EP06020362 A EP 06020362A EP 1795470 A1 EP1795470 A1 EP 1795470A1
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EP
European Patent Office
Prior art keywords
web tension
web
section
determined
account
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
EP06020362A
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German (de)
English (en)
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EP1795470B1 (fr
Inventor
Stephan Dr. Schultze
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.)
Bosch Rexroth AG
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Bosch Rexroth AG
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Publication of EP1795470A1 publication Critical patent/EP1795470A1/fr
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Publication of EP1795470B1 publication Critical patent/EP1795470B1/fr
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    • 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
    • B65H23/044—Sensing web tension
    • 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
    • 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

Definitions

  • the present invention relates to a method for determining a web tension according to the preamble of patent claim 1.
  • Processing machines in which the web is subdivided into sections of different web tension can be found especially in the area of paper, cardboard, plastic and metal foils.
  • the web as it passes through the machine is divided into at least two sections, each section having a predetermined web tension value.
  • the web tension in each section is measured by means of suitable web tension sensors and regulated by a corresponding influence of the machine on the target value. For example, the speeds of the transport axes are changed so that the web tension in each section follows the respective target value.
  • web tension controls are known, e.g. the system SYNAX, which has such a function for web tension control.
  • a tension control system having a plurality of tension detectors disposed on the upstream sides of pressure cylinders and on the upstream sides of tension rollers for detecting tension on a web, wherein speed setting means for adjusting respective rotational speeds of the pressure cylinders and the tension rollers on the base of the output signals from regulators to which detected values are fed back from respective voltage detectors, the regulators being associated with voltage setting devices and the controllers comparing the detected values from the voltage detectors and setpoints from the voltage setting devices and the output signals for controlling the rotational speeds of the voltage comparators Output pressure cylinder and the tension rollers to reduce the compared values to zero.
  • the adjustment of a drive axle acts on the web tension of several sections, e.g. the SYNAX system makes it possible to control one positioning axis of two web tension control systems. That The web tension control of a section can adjust both the previous and subsequent transport axes, so as not to interfere with web tension in the adjacent sections during control operations in this section. Depending on the time constant of the controls, oscillatory processes can occur as a result.
  • the web tension of at least a first web tension section is first determined.
  • the web tension of the at least one second web tension section is then determined on the basis of the determined web tension of the at least one first web tension section. It should be made clear at this point that the web tension of the at least one second web tension section is not measured in particular.
  • a large number of measuring sensors for determining the web tension can be saved with the solution according to the invention.
  • all or all but one measuring device can be saved.
  • the method according to the invention can be used very advantageously in conjunction with a web tension control.
  • the values obtained are expediently compared with intended target web tension values and the web tension is then regulated accordingly.
  • the mutual influence can be advantageously reduced. If, in the solution according to the invention, the different web tension controllers automatically receive early changes in the preceding web tension sections via a precontrol, the compensation processes are considerably shorter.
  • the web tension of the at least one first web tension section is measured.
  • a measuring roller and a pressure cell can be used, as is known in the art. This will be determines an absolute web tension value that may be used to determine the remaining web tension values.
  • the web tension of the at least one first web tension section is determined taking into account a modulus of elasticity of the web material and a rotational speed of at least two transport axes. This also determines an absolute web tension value that can be used to determine the remaining web tension values.
  • the term n ⁇ 2 - n ⁇ 1 n ⁇ 1 describes an expansion d.
  • the web tension of the at least one first web tension section is determined taking into account a known web tension value, in particular by means of a dancer based on the web tension value impressed by the dancer, and a drive torque of at least one transport axis.
  • This also determines an absolute web tension value that can be used to determine the remaining web tension values.
  • a web tension S1 taking into account the known Web tension S0 considered the drive torque N of the transport axis between the sections with the web tension S0 and S1.
  • the drive torque N is typically determinable in a machine. It can, for example, be read by the drive or by the tension control.
  • a stretching property in particular a modulus of elasticity
  • the modulus of elasticity is typically changed by machining on the web. If this change is known, this can be taken into account when determining the web tension. Thus, the accuracy of the method can be increased.
  • a second cross section of the web deviating from a first cross section of the web in a web tension section in a different web tension section is considered linearly with the ratio of the first to the second cross section for the modulus of elasticity. If, for example, the cross-section of the web is changed by processing the web, for example by trimming the edge or punching out material, the modulus of elasticity will change accordingly. If, for example, the cross-section of the web is reduced, the modulus of elasticity will also be reduced. As an approximation one can assume a linear relationship between web width or cross-section A and elastic modulus E.
  • a slippage of the transport axes is taken into account by estimating the slip.
  • the slippage of the transport axes is taken into account by measuring the slip. Is the transport not completely slip-free. (For example, by not permanently employed counter-pressure rollers), so with knowledge of this slip this can be included in the determination of the speed ratios.
  • This slip can not be determined automatically, but must be estimated or measured, e.g. by means of a measuring wheel. Thus, the accuracy of the method can be increased.
  • the web tension of the at least one second web tension section is determined on the basis of a drive torque of at least one transport axis.
  • the drive torque is converted by means of a diameter of the at least one transport axis by means of a lever law in a web tension-changing force.
  • a friction torque of the at least one transport axis taken into account.
  • the friction torque can be taken into account, for example, as the sum of a constant value and a speed-dependent or speed-proportional value or another predefinable speed-dependent characteristic.
  • the compensation values can be easily compared a manual, semi-automated or fully automated test drive without web. This makes it possible to increase the accuracy of the web tension determination.
  • a machining torque of a machining axis within a web tension section is taken into account in the method according to the invention.
  • a tension to be determined can be determined more accurately. It makes sense to take the machining torque into account with a constant and a speed-proportional component.
  • a measurement of the drive torque by means of a filtering of the measured moments, the determined friction and / or the machining forces performed. This makes it possible to smooth the determined web tension values over time, and thus to make it easier to further process the determined values.
  • the drive data are determined by means of a manual, semi-automatic or fully automated test drive. This is for a user improves the handling of the method or system according to the invention.
  • a computing unit determines the web tension of the at least one second web tension section on the basis of the web tension determined in the first web tension section according to a method of the invention.
  • a computer program according to the invention contains program code means for determining the web tension of the at least one second web tension section on the basis of the web tension determined in the first web tension section according to the inventive method, when the computer program is executed on a computer or a corresponding computer unit, in particular one of the computer units according to the invention.
  • a computer program product contains program code means which are stored on a computer-readable data carrier in order to determine the web tension of the at least one second web tension section on the basis of the web tension determined in the first web tension section according to the inventive method, if the computer program product is stored on a computer or on a corresponding computer unit, in particular one of the computer units according to the invention, is performed.
  • Suitable data carriers are in particular floppy disks, hard disks, flash memories, EEPROMs, CD-ROMs, etc. It is also possible to download a program via computer networks (Internet, intranet, etc.).
  • the solution according to the invention is preferably used in conjunction with a web tension control.
  • FIG. 1 a processing machine, in which a material web 101 is subdivided into sections of different web tension, is denoted overall by 100.
  • a web 101 is transported and processed.
  • the processing devices are not shown themselves.
  • the web 101 moves in the present example in the direction indicated by an arrow V.
  • the web 101 is, as mentioned, divided into several web sections 111 to 114.
  • Each web section 111 to 114 has an actual and a desired web tension.
  • the web sections 111 to 114 are each web cross-sections A1 to A4 and Elastic moduli E1 to E4 associated.
  • the web sections 111 to 114 are limited by the associated transport axes.
  • the web portion 111 is limited on one side by the transport axes 200, 200 'and on the other side by the transport axes 201, 201'.
  • the transport axes 200 to 204 are the driven transport axes, whereas the transport axes 200 'to 204' are, for example, driveless counterpressure axes.
  • the transport axes 200, 200 ' rotate at a speed n0, the transport axes 201, 201' rotate at a speed n1, etc.
  • the web section 111 is a measuring device 210 for determining an absolute web tension S1 in this Section provided.
  • the web tension in the sections 112, 113 and 114 is determined on the basis of this determined first web tension.
  • no measuring devices are provided for these web sections 112 to 114.
  • the method begins in a method step 301. Subsequently, in a step 302, the web tension S1 is determined in the section 111 by means of the measuring device 210. Based on the rotational speeds n0 and n1 of the transport section 200, 200 ', 201, 201' delimiting the web section 111, an elongation d1 of the web section 111 is determined in a method step 303.
  • a modulus of elasticity E1 of the web in section 111 is determined in a step 304.
  • web section 113 a processing of the web takes place in such a way that a change in the web cross-section is brought about.
  • the web section A3 in the web section 113 thus differs from the web cross section A2 in section 112.
  • an elongation d3 in the material web section 113 is determined on the basis of the rotational speeds n2 and n3 of the associated transport axes 202,... 203 '.
  • a web tension S4 in the web section 114 is determined on the basis of drive torques of the respective transport axes.
  • a method step 313 the actual web tension values S1 to S4 are compared with the desired web tension values. Deviations are compensated by measures known in the prior art (speed change of the transport axis, etc.). In order to the proposed solution can be used advantageously in conjunction with the regulation of web tension.
  • the method ends in a step 314.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
EP06020362A 2005-12-09 2006-09-28 Procédé pour déterminer la tension d'une bande de matière Not-in-force EP1795470B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005058810A DE102005058810A1 (de) 2005-12-09 2005-12-09 Verfahren zum Bestimmen einer Bahnspannung

Publications (2)

Publication Number Publication Date
EP1795470A1 true EP1795470A1 (fr) 2007-06-13
EP1795470B1 EP1795470B1 (fr) 2010-02-10

Family

ID=37888296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06020362A Not-in-force EP1795470B1 (fr) 2005-12-09 2006-09-28 Procédé pour déterminer la tension d'une bande de matière

Country Status (5)

Country Link
US (1) US20070131036A1 (fr)
EP (1) EP1795470B1 (fr)
JP (1) JP2007163480A (fr)
AT (1) ATE457282T1 (fr)
DE (2) DE102005058810A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975103A2 (fr) * 2007-03-30 2008-10-01 manroland AG Procédé et dispositif pour déterminer la tension dans une bande de matériau imprimé
WO2010051874A1 (fr) * 2008-11-06 2010-05-14 Robert Bosch Gmbh Procédé de réglage de la tension d'une bande
EP2067725A3 (fr) * 2007-12-07 2010-11-10 Robert Bosch GmbH Procédé de correction d'axe dans une machine de traitement et machine de traitement

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016206A1 (de) * 2009-04-03 2010-10-14 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung
DE102009056293B4 (de) * 2009-11-30 2012-03-29 Eastman Kodak Company Vorrichtung und Verfahren zum Regeln der Spannung einer Substratbahn
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
DE102010056294A1 (de) 2010-12-24 2012-06-28 Robert Bosch Gmbh Verfahren zum Bestimmen eines Istwertes der Bahnspannung in einem Bahnspannungsabschnitt einer Bearbeitungsmaschine zur Bearbeitung einer Warenbahn
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
DE102012002724A1 (de) 2012-02-10 2013-08-14 Robert Bosch Gmbh Verfahren zur Regelung einer Bahnzugkraft in einer Bearbeitungsmaschine
AT512359A3 (de) 2011-12-29 2015-09-15 Bosch Gmbh Robert Verfahren zur Regelung einer Bahnzugkraft in einer Bearbeitungsmaschine
DE102013000680A1 (de) 2012-12-27 2014-07-03 Robert Bosch Gmbh Bahnzugkraftregelung unter Verwendung eines mittels Beobachters bestimmten Istwerts
EP3744521A1 (fr) * 2019-05-28 2020-12-02 Siemens Aktiengesellschaft Procédé de réglage de traction d'une bande à imprimer, dispositif de réglage et dispositif de transport de bande à imprimer

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP1505025A2 (fr) * 2003-08-06 2005-02-09 MAN Roland Druckmaschinen AG Méthode et dispositif pour contrôler la tension d'une bande et le répérage de coup d'une imprimante rotative
US20050137738A1 (en) * 2003-12-22 2005-06-23 3M Innovative Properties Company Real-time determination of web tension and control using position sensors

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US3701493A (en) * 1970-09-14 1972-10-31 Western Gear Corp Taper tension web winding machine
US3912145A (en) * 1974-03-04 1975-10-14 Butler Automatic Inc Web tension control system
JPS55130317A (en) * 1979-03-30 1980-10-09 Mitsubishi Electric Corp Controlling method for tension
JPH01309710A (ja) * 1988-06-07 1989-12-14 Kobe Steel Ltd 張力制御装置
US5357178A (en) * 1993-07-09 1994-10-18 Gettys Corporation Web tensioning control system
DE10014535A1 (de) * 2000-03-23 2001-09-27 Roland Man Druckmasch Verfahren zum Betreiben einer Rollenrotationsdruckmaschine
US6684776B2 (en) * 2001-02-23 2004-02-03 Heidelberger Druckmaschinen Ag Method and apparatus for determining slipping in a nip roller
US6763749B2 (en) * 2002-01-15 2004-07-20 The Procter & Gamble Company Web speed metering apparatus and method
US6993964B2 (en) * 2004-02-04 2006-02-07 The Procter & Gamble Company Method of determining a modulus of elasticity of a moving web material
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1505025A2 (fr) * 2003-08-06 2005-02-09 MAN Roland Druckmaschinen AG Méthode et dispositif pour contrôler la tension d'une bande et le répérage de coup d'une imprimante rotative
US20050137738A1 (en) * 2003-12-22 2005-06-23 3M Innovative Properties Company Real-time determination of web tension and control using position sensors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VALENZUELA M A ET AL: "SENSORLESS TENSION CONTROL IN PAPER MACHINES", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 39, no. 2, March 2003 (2003-03-01), pages 294 - 304, XP001158265, ISSN: 0093-9994 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975103A2 (fr) * 2007-03-30 2008-10-01 manroland AG Procédé et dispositif pour déterminer la tension dans une bande de matériau imprimé
EP1975103A3 (fr) * 2007-03-30 2009-10-14 manroland AG Procédé et dispositif pour déterminer la tension dans une bande de matériau imprimé
EP2067725A3 (fr) * 2007-12-07 2010-11-10 Robert Bosch GmbH Procédé de correction d'axe dans une machine de traitement et machine de traitement
WO2010051874A1 (fr) * 2008-11-06 2010-05-14 Robert Bosch Gmbh Procédé de réglage de la tension d'une bande
US8985021B2 (en) 2008-11-06 2015-03-24 Robert Bosch Gmbh Method of setting web tensioning

Also Published As

Publication number Publication date
JP2007163480A (ja) 2007-06-28
DE102005058810A1 (de) 2007-06-14
ATE457282T1 (de) 2010-02-15
EP1795470B1 (fr) 2010-02-10
DE502006006098D1 (de) 2010-03-25
US20070131036A1 (en) 2007-06-14

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