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EP0476437A1 - Méthode et dispositif pour saisir une bande d'impression déchirée - Google Patents

Méthode et dispositif pour saisir une bande d'impression déchirée Download PDF

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Publication number
EP0476437A1
EP0476437A1 EP91114972A EP91114972A EP0476437A1 EP 0476437 A1 EP0476437 A1 EP 0476437A1 EP 91114972 A EP91114972 A EP 91114972A EP 91114972 A EP91114972 A EP 91114972A EP 0476437 A1 EP0476437 A1 EP 0476437A1
Authority
EP
European Patent Office
Prior art keywords
web
roller
speed
torque
rotor
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
EP91114972A
Other languages
German (de)
English (en)
Other versions
EP0476437B1 (fr
Inventor
Werner J. Dipl.-Ing. Kotterer
Werner Dipl.-Ing. Kettl
Josef Dipl.-Ing. Öttl
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.)
Grafotec Kotterer GmbH
Original Assignee
Grafotec Kotterer 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 Grafotec Kotterer GmbH filed Critical Grafotec Kotterer GmbH
Publication of EP0476437A1 publication Critical patent/EP0476437A1/fr
Application granted granted Critical
Publication of EP0476437B1 publication Critical patent/EP0476437B1/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
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/18—Web break detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/025—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs responsive to web breakage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/20—Safety devices preventing damage

Definitions

  • the invention relates to a method according to the preamble of claim 1 and, according to a further concept of the invention, relates to a device according to the preamble of claim 2 which is suitable for carrying out this method.
  • a generic device is known from DE-OS 38 22 496.
  • the roller is driven at the machine speed. If the web does not wind up on the roller, which occurs with an unprinted or only slightly printed web, it is not possible with this known arrangement to tighten the web which has already become loose due to the web break at the time of catching by the catching device. There is therefore a risk of the web fluttering and / or that the web rises on an adjacent printing unit cylinder, which can lead to a so-called winder. If the web winds up on the roller, which is to be expected with a more printed web, an increasing advance of the roller compared to the machine speed is achieved due to the increasing roller diameter, so that the initially loose web is tightened. However, the tractive force acting on the web is not limited. Rather, there is a risk that the tension is tightened too much after tightening and therefore breaks again, which in turn can lead to a so-called winder. The arrangement which can be found in DE-OS 38 22 496 has therefore not proven to be safe enough.
  • DE-PS 32 15 473 results in a generic arrangement in which the roller is to be driven at or slightly above the web speed.
  • the drive device assigned to the roller is rigid in itself, so that the same speed ratio between web and roller is present until the arrangement comes to a standstill.
  • the first part of the task is solved according to the invention by the characterizing measures of claim 1.
  • a further, particularly preferred further development of the superordinate measures can consist in the fact that the torque transmission element with adjustable torque is designed as a drive motor that can be braked under load, preferably in the form of a DC servo motor, the speed of which is set to advance compared to the web speed and the torque of which the effect of the sensor can be reduced.
  • the speed of the motor can be controlled in an advantageous manner using the voltage and the torque of the motor using the current.
  • the use of its own drive motor also ensures that the device according to the invention can be retrofitted without having to intervene in the printing press drive. The subsequent assembly of the device according to the invention can therefore be carried out quickly and inexpensively.
  • the web flap device on which FIG. 1 is based and which is traversed by a paper web 1 printed in a web-fed rotary printing press, not shown, can be arranged between the last printing unit and a dryer arranged downstream of it.
  • the present web catching device consists of a frame 2 on which a roller 3 overlapped by the web 1 is rotatably mounted.
  • the roller 3 is driven by an assigned drive motor 4 with a subordinate gear 5 in the direction of the direction arrow shown in FIG.
  • the bracket 6 can be pivoted from the waiting position indicated by solid lines into the working position indicated by dashed lines, in which the rollers 7 come into engagement with the roller 3, whereby the web 1 located therebetween is pressed against the driven roller 3 becomes. Accordingly, the web 1 is either wound onto the roller 3 or deposited under the roller 3.
  • the bracket 6 can be suddenly swiveled by means of an adjusting device 9 which can be triggered by a web break switch 8, for example in the form of a prestressed spring.
  • the output signal of the web break switch 8 is input here, as indicated by the signal line 10, into a control device 11, by means of which the adjusting device 9 can be controlled, as indicated by the signal line 12.
  • the printing machine is braked by means of the control device 11, so that a falling machine speed results from the point in time at which the web break switch 8 responds.
  • the signal line assigned to the braking process is indicated at 13.
  • the control device 11 can be activated via a signal line 14 at the start of operation or when the machine is restarted.
  • the web break switch 8 can have a light barrier 15 scanning the edge of the web 1 and a deflection device 16 associated therewith, for example in the form of a blowing nozzle, for deflecting the edge of the web scanned by the light barrier 15 when the web train is omitted.
  • a web break switch constructed in this way responds very quickly and generates electrical output signals which can be easily further processed.
  • the electric drive motor 4 assigned to the roller 3 is designed here as a three-phase servo motor, the torque of which can be adjusted by adjusting the strength of the current consumed, and the speed of which occurs when the device is under load-free operation or when the load is up to the set torque by influencing it the voltage of the current consumed can be influenced. As soon as the load becomes higher than the set torque, the motor is braked by the load. In this case, the motor 4 acts practically like a spring.
  • the roller 3 is driven by the motor 4 during normal operation as a function of the speed of the printing press and thus as a function of the normal web speed, a lead of 15% being provided here.
  • the peripheral speed of the roller 3 is accordingly 15% above the web speed during normal operation.
  • This advance is set in that, as can be seen from the voltage-time diagram according to FIG. 2, the voltage of the current drawn by the motor 4, indicated here by a solid line 17, is constant by a dashed line as an output value derived from the printing press speed , the desired advance of 15% corresponding value is increased here.
  • This increase as can be clearly seen in FIG. 2, is also present when the output value drops after the web break switch 8 has responded.
  • the response time of the web break switch 8 is designated t R.
  • the output of the tachogenerator 19 is, as indicated by the signal line 20, at the control device 11. This is programmed so that it always adds a constant value to the voltage value analogous to the actual web speed according to line 18, so that with respect to that of the motor 4 received current results in a voltage curve according to line 17 in Figure 23.
  • the signal flow from the control device 11 to the motor 4 is indicated in FIG. 1 by a signal line 21.
  • the current intensity of the current drawn by the motor 4 influencing the torque that can be applied by the motor 4 is initially set by the control device 11 via the signal line 21 such that it has a maximum value which can easily be above the permissible web tension.
  • a high torque is thus present which can accelerate the rollers 7.
  • the web 1 is as a result the unavoidable dead time between web break and response of the web catching device is already loose, so that the high torque for web 1 is harmless at this moment.
  • the rollers 7 interact with the roller 3, ie the web 1 is caught, which is to be the case at t F in the diagrams according to FIGS.
  • a sensor 24 accommodated in the frame 2 is provided, as can also be seen in FIG. 1, which, in the lowered working position of the bracket 6 carrying the rollers 7, indicated by dashed lines, provides an output signal generated, which is supplied to the control device 11 via a signal line 25.
  • This is programmed in such a way that, with the presence of the sensor signal mentioned, the current intensity of the current drawn by the motor 4 is reduced in the manner described above.
  • the programmable control device 11 can be provided with a microprocessor, which results in a high degree of versatility.
  • the speed of the printing press and thus of web 1 is, as indicated in FIG. 4 at 26, practically constant up to time t R and then drops to a standstill.
  • the speed of the roller 3 indicated at 27 in FIG. 4 initially follows the machine speed beyond t R up to the time t F with the set advance corresponding parallel displacement. From the time t F , as already mentioned, the catching device is in engagement with the web 1, which is initially still loose, so that only a small web tension which does not exceed the low torque of the motor 4 effective from the time t F is exceeded attacks on the roller 3.
  • the speed of the roller 3 can therefore, as indicated in FIG. 4, also run somewhat parallel to the machine speed beyond the time t F.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Rotary Presses (AREA)
EP91114972A 1990-09-15 1991-09-05 Méthode et dispositif pour saisir une bande d'impression déchirée Expired - Lifetime EP0476437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4029366A DE4029366C2 (de) 1990-09-15 1990-09-15 Vorrichtung zum Fangen und Halten einer gerissenen Bedruckstoffbahn
DE4029366 1990-09-15

Publications (2)

Publication Number Publication Date
EP0476437A1 true EP0476437A1 (fr) 1992-03-25
EP0476437B1 EP0476437B1 (fr) 1994-11-23

Family

ID=6414362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114972A Expired - Lifetime EP0476437B1 (fr) 1990-09-15 1991-09-05 Méthode et dispositif pour saisir une bande d'impression déchirée

Country Status (4)

Country Link
US (1) US5163371A (fr)
EP (1) EP0476437B1 (fr)
JP (1) JP2990457B2 (fr)
DE (2) DE4029366C2 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0575786A1 (fr) * 1992-06-25 1993-12-29 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif automatique de capture d'une bande de papier déchirée
EP0616966A1 (fr) * 1993-03-25 1994-09-28 Baldwin Web Controls (A Division Of Baldwin Graphic Systems, Inc.) Dispositif anti-enroulement pour machine à imprimer des bandes
DE4311774A1 (de) * 1993-04-08 1994-10-13 Heidelberger Druckmasch Ag Sicherheitsvorrichtung für eine Rotationsdruckmaschine zum Drucken auf Bahnen
EP0703077A1 (fr) * 1994-09-14 1996-03-27 Acrotec GmbH Dispositif pour éviter des dommages dans un presse d'imprimerie
US5678484A (en) * 1993-03-25 1997-10-21 Baldwin Web Controls Anti-wrap device for a web press
FR2761355A1 (fr) * 1997-03-26 1998-10-02 Heidelberg Harris Sa Dispositif de retenue d'une bande dans la superstructure d'une machine rotative a imprimer
EP1099553A2 (fr) * 1999-11-09 2001-05-16 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif et procédé pour éviter des enroulements dans une machine d'impression rotative
US6298782B1 (en) 1993-03-25 2001-10-09 Baldwin Web Controls Anti-wrap device for a web press
DE10106945A1 (de) * 2001-02-15 2002-08-22 Heidelberger Druckmasch Ag Vorrichtung zum Führen und Ergreifen umlaufender Transportbänder
US6761111B2 (en) 2001-09-25 2004-07-13 Heidelberger Druckmaschinen Ag Catching device for a torn transport belt in a folder of a printing press and folder having a catching device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339766C1 (de) * 1993-11-23 1995-02-09 Koenig & Bauer Ag Vorrichtung zum Verhindern von Schäden bei Rissen von Warenbahnen
US5694524A (en) * 1994-02-15 1997-12-02 R. R. Donnelley & Sons Company System and method for identifying conditions leading to a particular result in a multi-variant system
FR2734513B1 (fr) * 1995-05-22 1997-08-14 Heidelberg Harris Sa Procede de detection de perturbations dans le transport d'une nappe continue de papier dans une machine a imprimer
DE19629071C1 (de) * 1996-07-18 1998-02-12 Baldwin Grafotec Gmbh Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn
FR2761352B1 (fr) * 1997-03-25 1999-05-28 Sfbt Societe Francaise De Band Bande transporteuse souple et convoyeur en faisant application
DE19722243C2 (de) * 1997-05-28 1999-12-16 Roland Man Druckmasch Antrieb einer Rotationsdruckmaschine für Mehrbahnenbetrieb
JP2958766B1 (ja) * 1998-05-20 1999-10-06 株式会社東京機械製作所 ウエブ紙の胴巻き防止装置
DE10027442B4 (de) * 2000-06-02 2005-12-01 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Detektion von Bahnrissen
DE10244218A1 (de) * 2001-10-19 2003-04-30 Heidelberger Druckmasch Ag Vorrichtung zur Reinigung eines Zylinders einer Bedruckstoff verarbeitenden Maschine
DE102004014777B4 (de) * 2004-03-26 2014-04-10 Baldwin Germany Gmbh Bahnfangvorrichtung einer Rollenrotations-Druckmaschine
DE102005041919B4 (de) * 2005-09-03 2008-05-29 Baldwin Germany Gmbh Bahnbruch-Überwachungseinrichtung für Rollenrotationsdruckmaschinen
EP2164788B1 (fr) * 2007-06-21 2013-08-14 Peter A. Rodriguez Système de capture de feuille de papier déchirée
DE102009000754A1 (de) * 2009-02-11 2010-08-12 Koenig & Bauer Aktiengesellschaft Bahnfangvorrichtungen einer Druckmaschine
TWI494261B (zh) 2010-07-14 2015-08-01 Bobst Sa 用於轉換網狀基材，進料站及包裝生產機之保護轉換單元的方法
TR202019502A2 (tr) * 2020-12-02 2021-01-21 Etapak Baski Ambalaj Sanayi Ve Ticaret Anonim Sirketi Baski maki̇neleri̇nde kullanilmak üzere tasarlanan bi̇r fi̇lm yakalama terti̇bati

Citations (4)

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Publication number Priority date Publication date Assignee Title
US2594035A (en) * 1949-07-26 1952-04-22 Westinghouse Electric Corp Reel control system
DE3537014A1 (de) * 1984-10-17 1986-04-17 Mitsubishi Jukogyo K.K., Tokio/Tokyo Verfahren zur verhinderung eines mehrfachbruchs von papierbahnen in einer rotationsdruckmaschine
DE3437455A1 (de) * 1984-10-12 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern eines wicklers im falle eines bahnrisses
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system

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US2838303A (en) * 1956-08-21 1958-06-10 Mccall Corp Web break detection
US3404627A (en) * 1967-01-19 1968-10-08 John W. Halley Web severing device for offset printing press
DE3215473C2 (de) * 1982-04-24 1985-03-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Verhindern von Druckwerksschäden bei Druckträgerbahnrissen
DE3309558C2 (de) * 1983-03-17 1985-04-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bedruckstoffbahnfangvorrichtung
FR2626528B1 (fr) * 1988-01-29 1990-06-08 Sermatec Appareil d'impression a roue de prise de vitesse integree
DE3812295C1 (fr) * 1988-04-13 1989-07-06 Albert-Frankenthal Ag, 6710 Frankenthal, De
DE3822496A1 (de) * 1988-07-02 1990-01-04 Kotterer Grafotec Vorrichtung zum fangen einer gerissenen bedruckstoffbahn
DE3910556C1 (fr) * 1989-04-01 1990-10-11 Man Roland Druckmaschinen Ag, 6050 Offenbach, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594035A (en) * 1949-07-26 1952-04-22 Westinghouse Electric Corp Reel control system
DE3437455A1 (de) * 1984-10-12 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern eines wicklers im falle eines bahnrisses
DE3537014A1 (de) * 1984-10-17 1986-04-17 Mitsubishi Jukogyo K.K., Tokio/Tokyo Verfahren zur verhinderung eines mehrfachbruchs von papierbahnen in einer rotationsdruckmaschine
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system

Non-Patent Citations (1)

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Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 126 (M-142)10. Juli 1982 & JP-A-57 051 638 ( MITSUBISHI ELECTRIC CORP. ) 26. März 1982 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692876A1 (fr) * 1992-06-25 1993-12-31 Heidelberger Druckmasch Ag Dispositif automatique de capture d'une bande de papier déchirée.
EP0575786A1 (fr) * 1992-06-25 1993-12-29 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif automatique de capture d'une bande de papier déchirée
US5372290A (en) * 1992-06-25 1994-12-13 Marmin; Jean C. Apparatus for removing a running torn web of material
US5678484A (en) * 1993-03-25 1997-10-21 Baldwin Web Controls Anti-wrap device for a web press
EP0616966A1 (fr) * 1993-03-25 1994-09-28 Baldwin Web Controls (A Division Of Baldwin Graphic Systems, Inc.) Dispositif anti-enroulement pour machine à imprimer des bandes
US5398610A (en) * 1993-03-25 1995-03-21 Baldwin Web Controls Anti-wrap device for a web press
US5443008A (en) * 1993-03-25 1995-08-22 Baldwin Web Controls Anti-wrap device for a web press
US6298782B1 (en) 1993-03-25 2001-10-09 Baldwin Web Controls Anti-wrap device for a web press
DE4311774A1 (de) * 1993-04-08 1994-10-13 Heidelberger Druckmasch Ag Sicherheitsvorrichtung für eine Rotationsdruckmaschine zum Drucken auf Bahnen
EP0703077A1 (fr) * 1994-09-14 1996-03-27 Acrotec GmbH Dispositif pour éviter des dommages dans un presse d'imprimerie
FR2761355A1 (fr) * 1997-03-26 1998-10-02 Heidelberg Harris Sa Dispositif de retenue d'une bande dans la superstructure d'une machine rotative a imprimer
EP1099553A2 (fr) * 1999-11-09 2001-05-16 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif et procédé pour éviter des enroulements dans une machine d'impression rotative
EP1099553A3 (fr) * 1999-11-09 2002-12-11 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif et procédé pour éviter des enroulements dans une machine d'impression rotative
DE10106945A1 (de) * 2001-02-15 2002-08-22 Heidelberger Druckmasch Ag Vorrichtung zum Führen und Ergreifen umlaufender Transportbänder
US6761111B2 (en) 2001-09-25 2004-07-13 Heidelberger Druckmaschinen Ag Catching device for a torn transport belt in a folder of a printing press and folder having a catching device

Also Published As

Publication number Publication date
JPH04234658A (ja) 1992-08-24
US5163371A (en) 1992-11-17
DE4029366A1 (de) 1992-03-19
EP0476437B1 (fr) 1994-11-23
JP2990457B2 (ja) 1999-12-13
DE4029366C2 (de) 1995-07-06
DE59103576D1 (de) 1995-01-05

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