EP0703077B1 - Dispositif pour éviter des dommages dans un presse d'imprimerie - Google Patents

Dispositif pour éviter des dommages dans un presse d'imprimerie Download PDF

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Publication number
EP0703077B1
EP0703077B1 EP95113880A EP95113880A EP0703077B1 EP 0703077 B1 EP0703077 B1 EP 0703077B1 EP 95113880 A EP95113880 A EP 95113880A EP 95113880 A EP95113880 A EP 95113880A EP 0703077 B1 EP0703077 B1 EP 0703077B1
Authority
EP
European Patent Office
Prior art keywords
web
severing
halting
catching
dryer
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
EP95113880A
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German (de)
English (en)
Other versions
EP0703077A1 (fr
Inventor
Werner J. Kotterer
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 EP0703077A1 publication Critical patent/EP0703077A1/fr
Application granted granted Critical
Publication of EP0703077B1 publication Critical patent/EP0703077B1/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

Definitions

  • the invention relates to a device for preventing damage to a dryer Web-fed rotary printing press through a web break.
  • Separating and holding devices are also known which the printing material web between the printing units and the Cut through the dryer and then pinch it. This will a disturbing influence of the strand in the dryer the printing material web switched off. Winder in the area of the last printing unit are accepted, because there is only that between the printing units Can wind the strand in one layer. At high However, machine speeds result in one Winding thickness that can lead to machine damage.
  • the invention has for its object a To create facility with which even at high-speed Printing presses with long dryers damage the Printing units effective if the printing material web breaks is prevented.
  • this is achieved in that a Web catching device, and a downstream in the web running direction Separating and holding device between the last printing unit and the dryer are arranged, as well one after the other the web safety device and the separating and Holding device for functioning web break detector are provided.
  • the web catching device When using the invention, the web catching device the strand in the printing unit Printing material web wound on the take-up roller.
  • the winding roller turns it into a dryer leading strand tightened in the short term, so that in this State of the one in operation with little time delay cutting means of the separating and holding device can be cut cleanly across the length of the web.
  • the short anyway, between the take-up roller and the Separating and holding device located strand Printing material web therefore has no oblique tear edge, the further winding of the from the printing units coming dreams can pull this one-sided stronger, which creates a risk of tearing, particularly in the area of the Einzugwerkes avoided.
  • the separating and Holding device not only ensures that from no web parts can be pulled out from the dryer, but that the strand in the dryer is not, e.g. through the blow nozzles, transported into the dryer becomes. The dryer must therefore be removed to remove this strand cannot be opened.
  • the web break detector is preferably the printing material web non-contact scanning sensor, the one that Web safety device and with a slight time delay Separating and holding device in function Control unit controls. This allows very short Response times of the device according to the invention achieve.
  • the Control unit a time delay element for control the separating and holding device.
  • a time delay element for control the separating and holding device.
  • the web catching device advantageously has a means a motor with a speed above the web running speed lying peripheral speed driven Take-up roller. With this measure it becomes Feeder leading strand of the substrate in Moment of device response in the short term streamlined so that despite opening the Printing unit cylinder and the resulting tendency of the strand can be wound up without wrinkles for fluttering can. This measure supports at the same time Tighten the strand leading to the dryer and thus one clean cut through the separating and holding device.
  • the control unit shows a the peripheral speed of the Take-up roller after grasping the printing material web on the Web running speed slowing control member. This will result from the enlargement of the Winding diameter of the winding roller caused Acceleration of that between the printing units Avoid runs of the substrate that lead to a could cause further crack.
  • the offset roll rotary printing machine has a feed unit 1, several printing units 2 and one Dryer 3 on.
  • the arrangement is such that a substrate 4 straight in the direction of Arrow a through the printing units 2 and the dryer 3 goes through.
  • Between the last printing unit 2 and the Dryers 3 are generally designated 5 Web catching device and a total designated 6 Separating and holding device arranged.
  • the Separating and holding device 6 in the web running direction a Web catching device 5 downstream.
  • the two Devices 5 and 6 are expediently direct to one another arranged adjacent, so that between them only a short piece of the substrate 4 is located.
  • the web safety device 5 and the separating and Holding device 6 in the embodiment of a structural unit summarized.
  • the invention can also applied to other types of presses.
  • the web catching device has 5 a take-up roller 7, which in the in FIG shown provision the substrate web not touched.
  • the take-up roller 7 is not one illustrated drive gear chain having gears by means of a motor 8, for example an electric geared motor, driven.
  • the web safety device also has a swivel frame 9 which is about a fixed axis 10 is pivotable.
  • the swivel frame 9 takes an axis 11 around which loosely rotatable one Counter-pressure roller 12 is mounted.
  • one Back pressure roller can also have multiple back pressure rollers the axis 11 be mounted.
  • the swivel frame 9 In the resting position of the Web safety device 5 is the swivel frame 9 under the Effect of a spring, not shown, on one Lock pin 13 of a trigger device 14, for example an electromagnet or a hydraulic or Pneumatic cylinder, on. If the locking pin 13 withdrawn, the swivel frame 9 can in the direction of arrow b and swivel the substrate 4 press on the take-up roller 7.
  • webbing safety device can also be any other known safety device find use.
  • Knife bar 15 Knife bar 15 with a knife 16 and -on the Dryer facing side - a terminal block 17.
  • a walking beam 18 is movable in the direction of arrow c arranged. This carries one on its top Bracket 19, which can be cut with the knife 16 cooperates, and a clamping surface 20, between which and the terminal strip 17, the path 4 can be set.
  • the separating and holding device 6 shown can also be another known separation and holding device Find the use of the substrate separates and holds the strand leading to the dryer.
  • a web break detector 21 provided that in the embodiment as the printing substrate 4 non-contact scanning sensor is.
  • the web break detector 21 is useful between the Separating and holding device 6 and the dryer 3 arranged.
  • the web break detector 21 gives in the case of a Web break a trigger signal to a control unit 22.
  • This control unit 22 has a microprocessor 23, the one in the case of one released by the web break detector Triggering signal activates the triggering device 14, so that the locking pin 13 is withdrawn.
  • the swivel frame 9 pivot in the direction of arrow b and thereby on the counter-pressure roller 12 Press the printing material web 4 onto the take-up roller 7. It can by a rod-shaped deflector 25 on Swivel frame 9, the printing material web 4 in one comparatively large loop area to the Winding roller 7 are brought up.
  • the winding roller 7 is shown Embodiment by means of the motor 8 with a Peripheral speed driven above the Running speed of the substrate 4 during the Pressure, for example, this speed Exceeds 15%.
  • the web safety device by pressing the Printing material web 4 by means of the counter-pressure roller 12 to the The winding roller 7 starts the microprocessor 23 Speed of the motor 8 and thus the take-up roller 7 too reduce to a level that the respective Web running speed of the now not driven Printing material web 4 taking into account the through the winding increasing the winding diameter of the Roller 7 determined.
  • the web catching device 5 thus exercises the phase of increased peripheral speed of the Winding roller 7 when the web catching device responds 5 no further acceleration onto the substrate 4 off, so that there is no danger that the Winding roller 7 caused another web break.
  • the control device 22 also has a Time delay element 24 on that with a low time delay the separating and holding device 6 controls.
  • a Time delay element 24 on that with a low time delay the separating and holding device 6 controls.
  • the low time delay with which the separation and Holding device 6 comes into play it is ensured that the printing material web is secure from the take-up roller 7 is taken and this one of the web running direction a opposite train to that in the dryer 3 Run the substrate 4 can exercise.
  • the substrate web 4 is therefore clamped in the area of the knife 16, which creates an exact cut across the direction of travel the printing material web 4 can achieve.
  • the one Release of the web catching device 5 between the winding roller 7 and the platen roller 12 and the knife 16 located short part of the substrate 4 can as a result of the perpendicular to the web running direction Cut when winding on the winding roller 7 none cause increased winding diameter on one side, which leads to an uneven pull across the width of the in the printing units 2 run of the substrate web 4 could result.
  • the danger of another crack of the Printing material web 4 in the area of the feed mechanism is therefore avoided.
  • a time delay element 24 can also a separation and holding device 6 use find whose responsiveness is so great that the The printing material web 4 is cut only when the winding roller 7 the printing material web 4 with a has gripped such a peripheral area that another Winding is secured.

Landscapes

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

Claims (10)

  1. Dispositif pour éviter des dommages provoqués par une rupture de bande dans une machine à imprimer rotative à bobines comprenant un dispositif de séchage, avec un dispositif attrapeur de bande (5) et un dispositif de sectionnement et de retenue (6) monté à la suite dans la direction d'avancement de la bande, qui sont disposés entre le dernier groupe d'impression (2) et le dispositif de séchage (3), ainsi qu'avec un détecteur de rupture de bande (21) mettant successivement en fonction le dispositif attrapeur de bande (5) et le dispositif de sectionnement et de retenue (6).
  2. Dispositif selon la revendication 1, caractérisé en ce que le détecteur de rupture de bande (21) est un détecteur qui balaye sans contact la bande de matériau à imprimer (4) et qui asservit une unité de commande (22) mettant en fonction le dispositif attrapeur de bande (5) et, avec un léger retard de temps, le dispositif de sectionnement et de retenue (6).
  3. Dispositif selon une des revendications précédentes, caractérisé en ce que l'unité de commande (22) présente un organe temporisateur (24) pour l'asservissement du dispositif de sectionnement et de retenue (6).
  4. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le dispositif de sectionnement et de retenue (6) entre en fonction avec un retard dû à son inertie de réponse.
  5. Dispositif selon une des revendications précédentes, caractérisé en ce que le dispositif attrapeur de bande (5) présente un cylindre d'enroulement (7) qui, au moyen d'un moteur (8), est entraíné à une vitesse circonférentielle supérieure à la vitesse d'avancement de la bande.
  6. Dispositif selon la revendication 5, caractérisé en ce que la vitesse de rotation du moteur (8) peut être réglée en continu, et l'unité de commande (22) présente un organe de commande (23) qui ralentit la vitesse circonférentielle du cylindre d'enroulement (7), à la suite de la prise en charge de la bande de matériau à imprimer (4), à la vitesse d'avancement de la bande.
  7. Dispositif selon la revendication 6, caractérisé en ce que l'organe de commande est un microprocesseur (23).
  8. Dispositif selon une des revendications précédentes, caractérisé en ce que le dispositif attrapeur de bande (5) et le dispositif de sectionnement et de retenue (6) sont disposés en voisinage immédiat l'un de l'autre.
  9. Dispositif selon une des revendications précédentes, caractérisé en ce que le dispositif attrapeur de bande (5) et le dispositif de sectionnement et de retenue (6) sont réunis en une unité de construction.
  10. Dispositif selon une des revendications précédentes, caractérisé en ce que le dispositif de sectionnement et de retenue (6) présente des moyens de serrage (17, 20) disposés sur le côté d'une lame de coupe (16) qui est tourné vers le dispositif de séchage (3).
EP95113880A 1994-09-14 1995-09-05 Dispositif pour éviter des dommages dans un presse d'imprimerie Expired - Lifetime EP0703077B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4432659 1994-09-14
DE4432659A DE4432659A1 (de) 1994-09-14 1994-09-14 Einrichtung zum Verhindern von Druckwerksschäden

Publications (2)

Publication Number Publication Date
EP0703077A1 EP0703077A1 (fr) 1996-03-27
EP0703077B1 true EP0703077B1 (fr) 1998-04-08

Family

ID=6528152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113880A Expired - Lifetime EP0703077B1 (fr) 1994-09-14 1995-09-05 Dispositif pour éviter des dommages dans un presse d'imprimerie

Country Status (3)

Country Link
US (1) US5619923A (fr)
EP (1) EP0703077B1 (fr)
DE (2) DE4432659A1 (fr)

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
DE10327910B4 (de) * 2003-06-20 2012-01-26 Baldwin Germany Gmbh Bahnfangvorrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002505647A (ja) * 1996-10-11 2002-02-19 ケーニツヒ ウント バウエル アクチエンゲゼルシヤフト 印刷キャリアのための保持装置
JP4876861B2 (ja) * 2006-11-13 2012-02-15 富士ゼロックス株式会社 印刷システム、制御装置およびプログラム
WO2018173703A1 (fr) * 2017-03-24 2018-09-27 住友重機械工業株式会社 Appareil de commande
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

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683195A (en) * 1950-10-14 1954-07-06 Cutler Hammer Inc Paper break control device
US2821914A (en) * 1954-11-30 1958-02-04 Tribune Company Web severing device for printing presses
DE3215473C2 (de) * 1982-04-24 1985-03-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Verhindern von Druckwerksschäden bei Druckträgerbahnrissen
US4532500A (en) * 1982-09-02 1985-07-30 Pako Corporation Web tension and break sensor system for photosensitive web processors
DE3822497A1 (de) * 1987-12-02 1989-10-19 Kotterer Grafotec Vorrichtung zum verhindern von maschinenschaeden
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
US5063845A (en) * 1990-02-16 1991-11-12 Perretta Graphics Corporation Anti-wrap for high speed printing press
DE4029366C2 (de) * 1990-09-15 1995-07-06 Kotterer Grafotec Vorrichtung zum Fangen und Halten einer gerissenen Bedruckstoffbahn
DE4106901C2 (de) * 1991-03-05 1994-05-26 Kotterer Grafotec Verfahren und Vorrichtung zur Überwachung einer Bahn
DE4124391C2 (de) * 1991-07-23 1995-08-31 Kotterer Grafotec Vorrichtung zum Durchtrennen und Halten einer gerissenen Bahn
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
US5365843A (en) * 1993-05-26 1994-11-22 Heidelberg Druckmaschinen Ag Printing press with web breaking assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327910B4 (de) * 2003-06-20 2012-01-26 Baldwin Germany Gmbh Bahnfangvorrichtung
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
US5619923A (en) 1997-04-15
EP0703077A1 (fr) 1996-03-27
DE59501831D1 (de) 1998-05-14
DE4432659A1 (de) 1996-03-21

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