EP0869093B1 - Vorrichtung zur Regelung der Bahnspannung in einer Druckmaschine - Google Patents

Vorrichtung zur Regelung der Bahnspannung in einer Druckmaschine Download PDF

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Publication number
EP0869093B1
EP0869093B1 EP19980400746 EP98400746A EP0869093B1 EP 0869093 B1 EP0869093 B1 EP 0869093B1 EP 19980400746 EP19980400746 EP 19980400746 EP 98400746 A EP98400746 A EP 98400746A EP 0869093 B1 EP0869093 B1 EP 0869093B1
Authority
EP
European Patent Office
Prior art keywords
printing
control system
web
pid control
cylinder
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
EP19980400746
Other languages
English (en)
French (fr)
Other versions
EP0869093A1 (de
Inventor
Serge Chiloff
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.)
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Original Assignee
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Filing date
Publication date
Application filed by ATN filed Critical ATN
Publication of EP0869093A1 publication Critical patent/EP0869093A1/de
Application granted granted Critical
Publication of EP0869093B1 publication Critical patent/EP0869093B1/de
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Expired - Lifetime 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
    • B65H23/04—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
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/31122—Omega-shaped
    • 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
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear
    • 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
    • B65H2557/30—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • B65H2557/31—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof for converting, e.g. A/D converters
    • 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
    • B65H2557/30—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • B65H2557/34—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof for analog control, e.g. proportional, integral or differentiated

Definitions

  • the present invention relates to an automatic device for controlling the tension of a strip of material.
  • Printing machines are generally equipped with flow devices the input and the output which are said to be at constant voltage.
  • the materials used for the strip all have, more or less, characteristics of hysteresis and are not perfectly elastic bodies.
  • the constraints thermal generally due to drying between units have the effect of either lengthening or shrinking the strip in the case of thermoplastic materials, or to shrink the strip in the case of materials with vegetable fibers which have lost an amount of moisture under the effect of heat. It is obvious that, for the latter, the amount of moisture contained in the origin has an importance on the final behavior of the material.
  • the voltage set at the machine output must take into account the resulting from the different elongations and narrowing of the strip during of its passage through the machine.
  • the image printed by the first printing unit arrives at the last unit with a length corresponding exactly to the development of the cylinder of this last unit.
  • the invention thus relates to a servomechanism making it possible to reach the above result.
  • the automatic belt tension control device printed in a printing machine known from US - A - 4,264,957 includes a cyclic pulse transmitter, a pulse transmitter incremental, a converter connected to an actuator, and a PID regulator, the cyclic pulse transmitter can be considered to be driven by the engraved or cliché cylinder of the last unit printing machine printing, the incremental pulse transmitter being driven by the printed web, and the output of the two transmitters being connected to an input of the PID regulator.
  • the other input of the PID regulator is connected to a electro-pneumatic converter itself connected to a pneumatic actuator acting on the tension dancer cylinder of the output tape, so that a constant printing pitch is maintained for the printing machine.
  • Fig. 1 schematically represents the last printing unit a printing machine.
  • Fig. 2 is a block diagram of the regulation loop of FIG. 1.
  • the last printing unit designated as a whole by the reference A presents its engraved or cliché cylinder 1 which is pressed by a matching cylinder 2.
  • Printed strip 3 scrolls from right to left and wraps around a dancing cylinder of known type 4.
  • the dancing cylinder 4 is ballasted pneumatically by a pneumatic actuator 5.
  • the engraved cylinder 1 drives a cyclic pulse emitter on its axis 6.
  • the printed strip 3 drives, before arriving at the last printing unit A, a roller 7 and a transmitter of incremental pulses 8.
  • the number of pulses from transmitter 8 recorded by the counter 9 at the time of recycling corresponds to the printing step arriving at the last printing unit A.
  • the reference pitch corresponding to the average length delivered by the engraved cylinder 1 only is supplied in a known manner by a 9 'unit, and the measurement of the printing step is compared to the reference step, in a PID 10 regulator, which acts by means of an electro-pneumatic converter 11, on the belt tension via the pneumatic actuator 5.
  • the deviation detector 12 compares the measurement of the no print out of counter 9 at the reference of the print step displayed from unit 9 '.
  • the step deviation ep which results from this comparison is processed in the PID regulator 10, comprising a digital / analog converter 13, which transforms this step deviation ep into the deviation signal se and an amplifier 14, which delivers the signal correction sc.
  • the correction signal sc leaving the PID regulator 10 acts on the electro-pneumatic converter 11, which develops, as a function of this correction signal, a pneumatic pressure pe on the pneumatic actuator 5 (See fig. 1).
  • the tension t which results from the pressure of the pneumatic actuator 5 on the strip 3, has the effect of lengthening more or less the pitch of the printing which arrives at the cylinder 1 of the printing unit A.

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)

Claims (5)

  1. Vorrichtung zur Regelung der Bahnspannung in einer Druckmaschine, die einen zyklisch arbeitenden Impulsgeber (6) aufweist, der seine Impulse von einem Druckzylinder (1) der letzten Druckeinheit (A) der Druckmaschine erhält,
    die ferner einen Inkrementalimpulsgeber (8) aufweist, der seine Impulse von der Bahn (3) erhält und
    die eine frei bewegbar gelagerte Umlenkrolle (4) zur Spannung der Bahn (3) am Ausgang aufweist, wobei die beiden Impulsgeber (6, 8) mit einem PID-Regler (10) verbunden sind,
    dadurch gekennzeichnet,
    daß der andere Eingang des PID-Reglers 10 mit einer Druckschrittreferenzeinheit (9') verbunden ist,
    daß der Ausgang des PID-Reglers (10) mit einem elektropneumatischen Wandler (11) verbunden ist, der zur Steuerung eines pneumatischen Stellgliedes (5) dient,
    das auf die frei bewegbar gelagerte Umlenkrolle (4) zur Beeinflussung der Bahnspannung am Ausgang wirkt, so daß ein gleichmäßiger, konstanter Druckvorgang mit der Druckmaschine erzielbar ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Informationen der beiden Impulsgeber (6, 8) von einer Meßeinheit (9) für den Druckvorgang / die Bahnspannung empfangen werden, deren Ausgang mit dem PID-Regler (10) verbunden ist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Meßeinheit (9) für den Druckvorgang / die Bahnspannung einen Zähler umfaßt, der bei jedem Impuls des zyklisch arbeitenden Impulsgebers (6) zurückgestellt wird.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine Einheit (12) zum Melden von Schrittabweichungen mit der Meßeinheit (9) für den Druckschritt und mit einer Referenzeinheit (9') für den Druckschritt verbunden bzw. zwischen diesen angeordnet ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der PID-Regler (10) einen analog-digitalen Wandler (13) aufweist, der ein Signal für die Druckabweichung liefert und der mit einem Verstärker (14) verbunden ist, der das Korrektursignal an den elektro-pneumatischen Wandler (11) gibt.
EP19980400746 1997-04-02 1998-03-30 Vorrichtung zur Regelung der Bahnspannung in einer Druckmaschine Expired - Lifetime EP0869093B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9704007 1997-04-02
FR9704007A FR2761673B1 (fr) 1997-04-02 1997-04-02 Dispositif de controle automatique de la tension d'une bande de materiaux dans une machine a imprimer

Publications (2)

Publication Number Publication Date
EP0869093A1 EP0869093A1 (de) 1998-10-07
EP0869093B1 true EP0869093B1 (de) 2000-11-02

Family

ID=9505434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980400746 Expired - Lifetime EP0869093B1 (de) 1997-04-02 1998-03-30 Vorrichtung zur Regelung der Bahnspannung in einer Druckmaschine

Country Status (3)

Country Link
EP (1) EP0869093B1 (de)
DE (1) DE69800372D1 (de)
FR (1) FR2761673B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6752013B2 (en) * 2000-11-29 2004-06-22 Heidelberger Druckmaschinen Ag Device and method for web tension measurement
FI20021852A (fi) * 2002-10-17 2004-04-18 Metso Paper Inc Rainan kireyden hallinta
CN104355160A (zh) * 2014-10-31 2015-02-18 黄山富田精工制造有限公司 一种张力控制装置
CN106927295A (zh) * 2017-05-09 2017-07-07 山东新巨丰科技包装股份有限公司 一种张力控制系统及应用其的挤出复合机
CN108845490A (zh) * 2018-06-23 2018-11-20 广东希望高科数字技术有限公司 一种张力可调的恒张力同步放卷控制系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271379A (en) * 1978-12-29 1981-06-02 Harris Corporation Web fed printing press motor control
US4264957A (en) * 1979-05-23 1981-04-28 Zerand Corporation Apparatus and method for register control in web processing apparatus
JPS6042048A (ja) * 1983-08-18 1985-03-06 Rengo Co Ltd 多色印刷装置の位相合わせ装置
DD235620A1 (de) * 1985-03-28 1986-05-14 Polygraph Leipzig Verfahren zum erzeugen einer abtastimpulsfolge und abtastregler
US5483893A (en) * 1995-03-31 1996-01-16 Isaac; Ragy Control system and method for automatically identifying webs in a printing press

Also Published As

Publication number Publication date
FR2761673B1 (fr) 1999-06-18
EP0869093A1 (de) 1998-10-07
FR2761673A1 (fr) 1998-10-09
DE69800372D1 (de) 2000-12-07

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