EP0824071B1 - Dispositif pour saisir une bande d'impression déchirée - Google Patents

Dispositif pour saisir une bande d'impression déchirée Download PDF

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Publication number
EP0824071B1
EP0824071B1 EP97110608A EP97110608A EP0824071B1 EP 0824071 B1 EP0824071 B1 EP 0824071B1 EP 97110608 A EP97110608 A EP 97110608A EP 97110608 A EP97110608 A EP 97110608A EP 0824071 B1 EP0824071 B1 EP 0824071B1
Authority
EP
European Patent Office
Prior art keywords
pneumatic cylinder
roller
expansion chamber
web
compressed air
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
EP97110608A
Other languages
German (de)
English (en)
Other versions
EP0824071A1 (fr
Inventor
Werner Kettl
Andreas Birkenfeld
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.)
Baldwin Grafotec GmbH
Original Assignee
Baldwin Grafotec 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 Baldwin Grafotec GmbH filed Critical Baldwin Grafotec GmbH
Publication of EP0824071A1 publication Critical patent/EP0824071A1/fr
Application granted granted Critical
Publication of EP0824071B1 publication Critical patent/EP0824071B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/025Warning 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F33/00Indicating, counting, warning, control or safety devices
    • B41F33/04Tripping devices or stop-motions
    • B41F33/06Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F33/00Indicating, counting, warning, control or safety devices
    • B41F33/18Web break detection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30Forces; Stresses
    • B65H2515/34Pressure, e.g. fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00Actuating means
    • B65H2555/10Actuating means linear
    • B65H2555/11Actuating means linear pneumatic, e.g. inflatable elements

Definitions

  • the invention relates to a device for catching a cracked Printing material web with an area susceptible to web breaks, preferably behind the last printing unit, a web-fed rotary printing press arranged, by means of a drive device drivable roller to which a freely rotatable rotor arrangement can be pressed is arranged on a movable in the machine frame and by means of an actuating device that can be activated in the event of a web break drivable carrier is added.
  • a device of this type is for example from DE-C 38 22 496 known.
  • the rotor engages containing carrier to a spring assembly that is in the waiting position preloaded and secured by a bolt, which in the event of a web break is triggered.
  • the spring assembly has a comparatively large one Length, which leads to a large height and thus a bulky Construction results.
  • Parts required which results in a high effort and a high one Susceptibility to malfunction.
  • Another, very special disadvantage of the known Arrangement can be seen in the fact that the rotor arrangement during the entire catching process with the full, from the spring package Exerted force required to achieve high acceleration after unlocking must be comparatively large, to the roller is pressed. This leads to high wear of the rotor elements and at the same time to signs of flexing in the area of normally existing rubber cover of the rollers forming the rotor assembly, what to a high energy requirement of the drive device driving the roller leads.
  • the actuating device at least one Contains pneumatic cylinder, which is used to position the rotor assembly on the Roller can be acted upon with high pressure and the rotor arrangement reduced pressure on the roller.
  • the expansion space with a ventilation outlet can also be advantageous be provided, which is controllable by means of a valve which adjusts it accomplished catching process with a predetermined lateral delay the printing press comes to a standstill. This leads to a ventilation of the Expansion space and the cylinder. This ventilation makes it easier Return the carrier to the waiting position. This can be useful a return spring arrangement can be provided, which after Bleeding automatically causes the reset.
  • a compressed air reservoir is arranged upstream of the pneumatic cylinder is the one with a check valve and a pressure regulator provided supply line is connected to a compressed air source.
  • Compressed air source can advantageously be a rule existing compressed air network can be tapped. Pressure fluctuations in Compressed air network with the above measures of pressure accumulator kept away.
  • the compressed air reservoir upstream of the pneumatic cylinder ensures that in any case sufficient pressure energy for safe Operation of the pneumatic cylinder is available. The above Measures therefore ensure a high level of security.
  • the sponsor can via toggle lever arrangements on one of the side frame walls attached, overlapping the roller, supporting the pneumatic cylinder Traverse to be hung.
  • the Traverse is usually designed as a hollow profile. This opens up more advantageously Way the possibility of the compressed air reservoir and the Integrating expansion space into the crossbar, which is a special simple and compact design results.
  • the drawing shows a view of a device according to the invention schematically shown compressed air paths.
  • the web catching device shown in the drawing contains one Machine stand consisting of two side walls 1 and connecting them Truss 2 exists.
  • the beam forming the support 5 is symmetrical to one by two Middle longitudinal plane arranged toggle lever assemblies 8 on the top, the Roll 3 crossbar 2 suspended from the machine stand.
  • the two toggle lever arrangements 8 are with opposing rods 9 with a crank 10 connected to one on the upper cross member 2 attached bracket 11 is mounted and by means of a pneumatic cylinder 12 is actuated.
  • the pneumatic cylinder acting on the one hand on the crank 10 On the other hand, 12 is also supported on the upper cross member 2.
  • the pneumatic cylinder 12 can be pressurized with compressed air.
  • Compressed air sources can be the compressed air network usually available in printing shops be tapped.
  • To be independent of network fluctuations To ensure compressed air supply to the pneumatic cylinder 12 is this Upstream of the pressurized air reservoir 13, which via a supply line provided with a check valve 14 and a pressure regulator 15 16 connected to the compressed air network indicated at 17 is.
  • the compressed air reservoir 13 is here in the upper cross member 2 of the machine stand integrated. In the example shown, the compressed air reservoir is 13 a manometer 18 assigned, whereby a visual inspection of the pending pressure is possible.
  • the expansion space 19 is here also in the upper cross member 2 of the Integrated machine stand.
  • To form the mentioned traverse 2 takes place therefore expedient to use a hollow profile. This is at its ends closed by flanges 20 with which the traverse 2 to the Side walls 1 is attached.
  • the pneumatic cylinder 12 is in the example shown as a single-acting Cylinder formed.
  • the return movement of the pneumatic cylinder 12 and thus the carrier 5 with the rollers 6 is here by a return spring arrangement 22 causes.
  • To reset the pneumatic cylinder 12 and the associated expansion space 19 are vented.
  • the Expansion space 19 is provided with a vent line 23, which means of a switching valve 4 is controllable. This is controlled so that it after the end of a catching process, the vent line 23 opens. This switching operation is expediently carried out about 15 seconds after the Printing machine braked to a standstill during the catching process has come.
  • Multi-way valve designed further control valve 25 is provided.
  • This has three connections 26,27,28, of which the two connections 26 and 27 alternatively connectable to the connection 28 or jointly opposite the port 28 can be blocked.
  • the connection 26 is via a associated line 26a connected to the compressed air reservoir 2.
  • the Terminal 27 is connected to the expansion space by means of an associated line 27a 19 connected.
  • the connection 28 is connected to the Pneumatic cylinder 12 connected as a single-acting cylinder only has a connection line.
  • a control device 29 is provided, which is not described in detail here shown web break switch signals and from one of the Machine-running sensor detects processed signals, such as is indicated by input arrows.
  • the control valves 24 and 25 become so by means of the control device 29 controlled that in the waiting position shown all connections are closed. If a web break is reported, the control valve 25 controlled so that the lines 26a and 28a connected to each other become, whereby a compressed air supply to the pneumatic cylinder 12th from the compressed air reservoir 13. As soon as the rollers 6 on the roller 3 impinge, the connection of the lines are by means of the control valve 25 26a and 28a interrupted and a connection between the lines 27a and 28a produced, whereby the pneumatic cylinder 12 with the Expansion space 19 is connected.
  • the time that the device takes until the rollers 6 onto the roller 3 can easily be determined by experiment.
  • the one mentioned above Switching process for connecting the pneumatic cylinder 12 with the Expansion space 19 can therefore simply with a corresponding time Delay compared to the first switching operation Compressed air is applied to the pneumatic cylinder 12.
  • This can the control device 29 simply with a suitable delay element be provided.
  • the rollers 6 to strike the roller 3 by means of a arranged in the area of the carrier 5, etc. suitable sensor and the control device 29 to supply the corresponding signal.
  • the control device 29 When the catching process is finished, i.e. when the printing press Has come to a standstill, the control device 29 receives a corresponding one Signal. With a time delay of about 15 seconds after standstill the printing machine, the control valve 24 is controlled so that the Vent line 23 is opened. The control valve 25 remains in the existing position in which the connection between the pneumatic cylinder 12 and the expansion space 19 opened and the connection between the pneumatic cylinder 12 and the pressure accumulator 13 is closed. It there is a venting of the pneumatic cylinder 12 and Expansion space 19. This eliminates the force acting on the carrier 5, with which the return spring assembly 22 can operate.

Landscapes

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

Claims (10)

  1. Dispositif pour saisir une bande de matière d'impression déchirée, comportant un rouleau (3) qui est disposé dans une zone sujette aux déchirures de la bande, de préférence en aval du dernier groupe imprimant d'une machine à imprimer rotative à bobines et qui peut être entraíné au moyen d'un dispositif d'entraínement (4), rouleau contre lequel peut être pressé un ensemble de rotors (6) librement rotatif qui est disposé sur un support (5) mobile dans le bâti (1) de la machine et qui peut être déplacé au moyen d'un dispositif d'actionnement pouvant être activé dans le cas d'une déchirure de la bande, caractérisé en ce que le dispositif d'actionnement comprend au moins un cylindre pneumatique (12) qui peut être chargé avec une haute pression pour mettre l'ensemble de rotors (6) en appui contre le rouleau (3) et qui presse l'ensemble de rotors (6) contre le rouleau (3) avec une pression réduite.
  2. Dispositif selon la revendication 1, caractérisé en ce que, après l'exécution d'une course d'entraínement, le cylindre pneumatique (12), qui peut être chargé avec de l'air comprimé dans la direction de l'entraínement, peut être fermé du côté de la charge et peut être relié à une chambre d'expansion (19) dont le volume correspond de préférence à la cylindrée du cylindre pneumatique (12).
  3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la chambre d'expansion (19) est munie d'une sortie de décharge d'air (23) qui peut être commandée au moyen d'une soupape (24) qui l'ouvre après exécution d'une opération de saisie, de préférence avec un retard prédéterminé par rapport à l'état d'arrêt de la machine à imprimer.
  4. Dispositif selon la revendication 3, caractérisé en ce que la communication entre le cylindre pneumatique (12) et la chambre d'expansion (19) peut être interrompue après exécution de la décharge d'air.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le support (5) peut être déplacé en translation au moyen du cylindre pneumatique (12), à l'encontre de la force d'au moins un ressort de rappel (22).
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que, en amont du cylindre pneumatique (12) est disposé, du côté de la charge, un accumulateur d'air comprimé (13) qui est relié à une source d'air comprimé (17) par l'intermédiaire d'une conduite d'alimentation (16) munie d'un clapet anti-retour (14) et de préférence d'un régulateur de pression (15).
  7. Dispositif selon la revendication 6, caractérisé en ce que l'accumulateur de pression (13) et/ou la chambre d'expansion (19) sont incorporés dans au moins une partie du bâti de la machine.
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le support (5) est suspendu au moyen de dispositifs à genouillère (8) à une traverse (2) fixée à des parois latérales du bâti qui surmonte le rouleau (3), sur laquelle le cylindre pneumatique (12) prend aussi appui et qui est constituée de préférence par un profilé creux fermé à ses extrémités et dont le volume intérieur est subdivisé par une paroi intermédiaire (21) en l'accumulateur d'air comprimé (13) et la chambre d'expansion (19).
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'entrée du cylindre pneumatique (12) peut être reliée alternativement à l'accumulateur d'air comprimé (13) ou à la chambre d'expansion (19), ou en être isolée, au moyen d'une soupape de commande (25) constituée par une soupape à plusieurs voies et qui peut être actionnée en cas de déchirure de la bande.
  10. Dispositif selon l'une des revendications précédentes, caractérisé par un dispositif de commande (29) destiné à la commande des soupapes (24, 25).
EP97110608A 1996-07-18 1997-06-28 Dispositif pour saisir une bande d'impression déchirée Expired - Lifetime EP0824071B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19629071 1996-07-18
DE19629071A DE19629071C1 (de) 1996-07-18 1996-07-18 Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn

Publications (2)

Publication Number Publication Date
EP0824071A1 EP0824071A1 (fr) 1998-02-18
EP0824071B1 true EP0824071B1 (fr) 2000-06-14

Family

ID=7800224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110608A Expired - Lifetime EP0824071B1 (fr) 1996-07-18 1997-06-28 Dispositif pour saisir une bande d'impression déchirée

Country Status (4)

Country Link
US (1) US5931092A (fr)
EP (1) EP0824071B1 (fr)
JP (1) JPH10114056A (fr)
DE (2) DE19629071C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004014777A1 (de) * 2004-03-26 2005-10-13 Baldwin Germany Gmbh Bahnfangvorrichtung einer Rollenrotations-Druckmaschine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016385A1 (fr) * 1996-10-11 1998-04-23 Koenig & Bauer Ag Dispositif de fixation pour support d'impression
DE10159937B4 (de) * 2001-12-06 2007-12-13 Man Roland Druckmaschinen Ag Rückhaltevorrichtung zum Klemmen einer in einer Rollenrotationsdruckmaschine laufenden Bedruckstoffbahn
JP2007307889A (ja) * 2006-04-19 2007-11-29 Komori Corp 印刷機のウェブ検出装置
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3822496A1 (de) * 1988-07-02 1990-01-04 Kotterer Grafotec Vorrichtung zum fangen einer gerissenen bedruckstoffbahn
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
DE4029366C2 (de) * 1990-09-15 1995-07-06 Kotterer Grafotec Vorrichtung zum Fangen und Halten einer gerissenen Bedruckstoffbahn
DE4201481A1 (de) * 1992-01-21 1993-07-22 Heidelberger Druckmasch Ag Einrichtung zur handhabung von materialbahnen in verarbeitungsmaschinen
US5398610A (en) * 1993-03-25 1995-03-21 Baldwin Web Controls Anti-wrap device for a web press
DE9317308U1 (de) * 1993-11-11 1995-03-16 Brugger, Klaus, Dipl.-Ing., 83700 Rottach-Egern Hydrauliksystem für die hydraulische Betätigung eines Krankenwagen-Hubtisches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004014777A1 (de) * 2004-03-26 2005-10-13 Baldwin Germany Gmbh Bahnfangvorrichtung einer Rollenrotations-Druckmaschine
DE102004014777B4 (de) * 2004-03-26 2014-04-10 Baldwin Germany Gmbh Bahnfangvorrichtung einer Rollenrotations-Druckmaschine

Also Published As

Publication number Publication date
EP0824071A1 (fr) 1998-02-18
DE59701875D1 (de) 2000-07-20
DE19629071C1 (de) 1998-02-12
JPH10114056A (ja) 1998-05-06
US5931092A (en) 1999-08-03

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