EP0570676A1 - Dispositif de nettoyage d'un cylindre - Google Patents

Dispositif de nettoyage d'un cylindre Download PDF

Info

Publication number
EP0570676A1
EP0570676A1 EP93104136A EP93104136A EP0570676A1 EP 0570676 A1 EP0570676 A1 EP 0570676A1 EP 93104136 A EP93104136 A EP 93104136A EP 93104136 A EP93104136 A EP 93104136A EP 0570676 A1 EP0570676 A1 EP 0570676A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cleaning
control device
speed
cleaned
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.)
Ceased
Application number
EP93104136A
Other languages
German (de)
English (en)
Inventor
Josef 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 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 EP0570676A1 publication Critical patent/EP0570676A1/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders

Definitions

  • the invention relates to a device for cleaning a cylinder, in particular a blanket cylinder of a rotary offset printing press, with a cleaning device that can be actuated at sporadic intervals on the cylinder surface during operation , which can be actuated by means of an actuating device, and with a control device by means of which the actuating device is used during each cleaning process can be operated one or more times depending on a selectable cleaning program.
  • the cleaning device is set to the blanket cylinder to be cleaned each time the actuating device is actuated, for a predetermined period of time.
  • the consequence of this is that the blanket cylinder to be cleaned rotates past the cleaning device more often at high cylinder speed than at lower cylinder speed.
  • the number of cylinder rotations per employment of the cleaning device accordingly depends on the printing speed, which in turn depends on the paper quality, the type of fold, the type of trimming, etc.
  • the cleaning time has so far been set to the worst case, i.e. to a very slow speed. So far, it has not been possible to adapt the cleaning time to higher speeds. Since cleaning is carried out during operation, waste is produced during the cleaning process.
  • the amount of waste is dependent on the printing speed. At higher printing speeds, more waste is produced than at lower printing speeds. The production of waste does not only mean a high loss of material, but also a high loss of effective production time. The known arrangements therefore prove to be insufficiently economical.
  • This object is achieved in that the speed of the cylinder to be cleaned can be recorded and that the control device is programmed so that the duration of the same cleaning process decreases with increasing cylinder speed.
  • control device can expediently be programmed such that the duration of each actuation of the cleaning device within a cleaning process decreases with increasing cylinder speed.
  • control device can advantageously be programmed so that the cylinder to be cleaned at any speed executes an equal number of cylinder revolutions within a cleaning process and / or actuation of the cleaning device.
  • the speed recording can expediently take place by means of an encoder which emits angle signals. It is therefore advantageously also possible to adjust the cleaning device depending on the angle.
  • the control device can therefore expediently be designed such that the cleaning device can be switched on and off at least partially as a function of the pit passage. This measure enables, in particular in the case of sheet-fed rotary printing machines with a large cylinder pit, a reduction in the rubber blanket wear, in particular in the area of the pit edge trailing in the direction of rotation. It can also be provided here that a spray device loaded with cleaning fluid is switched off during the passage through the pit, as a result of which, in particular in the case of spray devices spraying directly onto the cylinder to be cleaned, an accumulation of cleaning fluid in the pit can be counteracted.
  • the drawing shows a schematic side view of a blanket washing device according to the invention.
  • the drawing is based on a sheet-fed rotary offset printing machine, which is indicated by a frame 1 and one of its blanket cylinders 2. This has a comparatively large cylinder pit 3, in which the tensioning devices for the rubber blanket are arranged.
  • each blanket cylinder 2 is assigned a washing device 5 which is accommodated on consoles 4 of the machine frame 1 and which is arranged at sporadic intervals, i.e. if necessary, has cleaning device adjustable to the cylinder circumference. The cleaning device is activated during operation, i.e. with the machine running.
  • the cleaning device can consist of a moistenable brush roller etc.
  • the cleaning device consists of a pressure bar 6, over which a cloth 7, for example in the form of a fleece, is guided, which can be unwound from a supply roll 8 and wound onto a storage roll 9.
  • the pressure bar 6 can be advanced and retracted by means of an adjusting element 10, here in the form of cylinder-piston units arranged uniformly distributed over the machine width, that is to say it can be moved from the waiting position drawn with solid lines to the working position drawn with broken lines and vice versa.
  • an adjusting element 10 here in the form of cylinder-piston units arranged uniformly distributed over the machine width, that is to say it can be moved from the waiting position drawn with solid lines to the working position drawn with broken lines and vice versa.
  • the storage roll 9 is blocked for used cloth, so that fresh cloth is unwound from the supply roll 8.
  • the reverse stroke the storage roll 9 is driven and the supply roll 8 is blocked.
  • a nozzle bar 11 is provided, through which the cloth 7 running onto the pressure bar 6 can be acted upon with washing liquid over the entire width.
  • the nozzle bar 11 is activated when the washing device is turned on to carry out a washing.
  • One or more washing steps can be followed by one or more drying steps. Dry cloth is pressed against the circumference of the cylinder. The nozzle bar 11 remains out of operation.
  • a control device 12 which is designed here as a programmable microprocessor control.
  • Various washing programs can be programmed into these, which can be selected by hand as required, as indicated by a selector switch 13.
  • the different washing programs can differ in the number of washing and drying steps that follow one another during a washing process.
  • the printing unit cylinders rolling on one another are driven at mutually the same, but overall variable speed.
  • the washing process takes place at full operating speed.
  • the control device 12 is designed so that the duration of the same washing program increases with increasing Speed decreases. In this way it is achieved that the number of revolutions that the blanket cylinder 2 performs during a washing process is approximately the same or completely the same at each speed.
  • the control device 12 is to be designed such that, in the case of washing programs with several steps, the individual steps extend over the same number of revolutions of the blanket cylinder 2 at every speed.
  • the speed of the blanket cylinder 2 or of an element rotating synchronously therewith is recorded and entered as a command variable in the control device 12.
  • a speedometer arrangement is used to record the speed. This can be a tachometer generator that delivers a signal that is analogous to speed.
  • an incremental disk 14, which can be driven here with the blanket cylinder 2 is provided for this purpose, which is scanned by means of an associated sensor 15, which is located at the input of an encoder 16 arranged upstream of the control device 12.
  • the sensor 15 delivers digital signals which are converted by the encoder 16 into suitable electrical signals which can be processed within the control device 12.
  • the incremental disk 14 is designed in such a way that a signal is generated per cylinder revolution, as a result of which the speed can be recognized.
  • the incremental disk 14 is designed such that not only one signal is generated per cylinder revolution, but several. An angular resolution can be achieved in this way. It is therefore easily possible to determine the passage of the cylinder pit 3 through the contact area between the cylinder circumference and the activated cleaning device.
  • the control device 12 is accordingly designed such that the pressure bar 6 is retracted during the passage of the cylinder pit 3 through the mentioned contact area and then pushed forward again or in any case relieved and then loaded again. As a result, rapid wear of the rubber blanket on the edge 17 of the cylinder pit 3 trailing in the direction of rotation of the rubber blanket cylinder 2 is effectively prevented.
  • the nozzle bar 11 is arranged behind the cloth 7, which transfers the cleaning liquid to the cylinder to be cleaned.
  • the nozzle bar 11 can be actuated independently of the pit passage.
  • the control device 12 can be designed such that the spraying device does not spray during passage through the pit, which is readily possible due to the angular resolution that has been carried out.
  • washing programs it may be appropriate to vary the washing programs depending on the speed, for example, to perform fewer drying steps and more washing steps at high speeds than for the same soiling at lower speeds.
  • speed of the cylinder to be cleaned such a variation is readily possible.
  • control device (12) has to be programmed accordingly.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP93104136A 1992-05-16 1993-03-13 Dispositif de nettoyage d'un cylindre Ceased EP0570676A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4216243 1992-05-16
DE19924216243 DE4216243C2 (de) 1992-05-16 1992-05-16 Vorrichtung zur Reinigung eines Zylinders

Publications (1)

Publication Number Publication Date
EP0570676A1 true EP0570676A1 (fr) 1993-11-24

Family

ID=6459060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104136A Ceased EP0570676A1 (fr) 1992-05-16 1993-03-13 Dispositif de nettoyage d'un cylindre

Country Status (3)

Country Link
EP (1) EP0570676A1 (fr)
JP (1) JPH0623972A (fr)
DE (1) DE4216243C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654350A1 (fr) * 1993-11-12 1995-05-24 Oxy-Dry Maschinen GmbH Procédé pour le nettoyage automatique de cyclindres dans des machines d'impression à commande centrale
FR2718996A1 (fr) * 1994-04-26 1995-10-27 Heidelberger Druckmasch Ag Procédé de lavage de l'enveloppe d'un cylindre d'une machine rotative à imprimer.
DE19508569A1 (de) * 1994-04-26 1995-11-02 Heidelberger Druckmasch Ag Verfahren zum Waschen der Mantelfläche eines Zylinders, vorzugsweise eines Gummituchzylinders von Offset-Rotationsdruckmaschinen
EP0855269A1 (fr) * 1997-01-22 1998-07-29 Baldwin-Japan Ltd. Procédé de nettoyage de la surface extérieure d'un cylindre
EP1078742A1 (fr) * 1999-07-31 2001-02-28 Koenig & Bauer Aktiengesellschaft Methode de nettoyge des cylindres dans des presses rotatives

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443356C2 (de) * 1994-12-06 1998-07-02 Roland Man Druckmasch Verfahren zur Reinigung eines Zylinders einer Rotationsdruckmaschine
DE19920228A1 (de) * 1999-05-03 2000-11-09 Baldwin Grafotec Gmbh Druckmaschinen-Reinigungsvorrichtung
DE19936143B4 (de) * 1999-07-31 2004-11-11 Koenig & Bauer Ag Einrichtung zum Waschen von Zylindern an Druckmaschinen
DE10056026A1 (de) * 2000-11-11 2002-05-16 Baldwin Grafotec Gmbh Druckmaschinenzylinder-Waschvorrichtung und - Waschverfahren
DE10327888A1 (de) * 2003-06-20 2005-01-05 Baldwin Germany Gmbh Bogendruckmaschinen-Wascheinrichtung und Steuereinrichtung dafür
DE102008012039B4 (de) 2008-03-01 2014-10-30 manroland sheetfed GmbH Verfahren zum Reinigen mindestens eines Zylinders und/oder mindestens einer Walze einer Druckmaschine
CN111136037A (zh) * 2019-12-25 2020-05-12 张健 设备金属表面无接触式间隙控制装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856848A (en) * 1955-05-05 1958-10-21 Harris Intertype Corp Means for dampening the surface of a rotating cylinder
FR2078140A5 (fr) * 1970-02-04 1971-11-05 Gestetner Ltd
DE2538105A1 (de) * 1974-09-11 1976-04-01 Hans Jacob Dipl Ing Moestue Vorrichtung zum reinigen eines zylinders einer druckmaschine
FR2284455A1 (fr) * 1974-09-11 1976-04-09 Moestue Hans Dispositif pour nettoyer un cylindre d'une machine a imprimer
JPS553984A (en) * 1978-06-27 1980-01-12 Ricoh Co Ltd Blancket drum cleaning apparatus for offset press
DE3120983A1 (de) * 1980-05-28 1982-04-29 Dai Nippon Insatsu K.K., Tokyo Vorrichtung zum waschen des gummituchzylinders einer rotations-offsetpresse
EP0213597A2 (fr) * 1985-08-27 1987-03-11 Toray Industries, Inc. Presse à imprimer polychrome
FR2595626A1 (fr) * 1986-03-11 1987-09-18 Leroy Pierre Etienne Nouvel appareil destine a la reproduction de documents par procede lithographique
US4765242A (en) * 1986-12-04 1988-08-23 Kabushiki Kaisha Asahi Shimbunsha Device for cleaning blanket mounted around cylindrical drum of a printing machine
EP0325381A2 (fr) * 1988-01-19 1989-07-26 Jimek Ab Système de commande pour commander un dispositif de mouillage par pulvérisation
EP0334173A1 (fr) * 1988-03-23 1989-09-27 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif pour nettoyer les surfaces de travail d'une machine, en particulier d'une machine d'imprimerie
JPH01242252A (ja) * 1988-03-25 1989-09-27 J P Ii Kk 水無し平版印刷機の版胴装置
JPH0310842A (ja) * 1989-06-08 1991-01-18 Toppan Printing Co Ltd ブランケット洗浄方法
JPH0441241A (ja) * 1990-06-06 1992-02-12 Nippon Baldwin Kk 印刷機のシリンダ洗浄装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838163A (ja) * 1981-08-31 1983-03-05 Ricoh Co Ltd オフセツト印刷機のクリ−ニング制御方法
DE3789975T2 (de) * 1986-08-02 1994-09-08 Dainippon Printing Co Ltd Reinigungssystem für eine Druckmaschine.
DE3723400C1 (de) * 1987-07-15 1989-02-23 Baldwin Gegenheimer Gmbh Verfahren und Vorrichtung zum Reinigen von Zylindern einer Rollendruckmaschine
DE3841411C1 (fr) * 1988-12-08 1990-07-26 Baldwin-Gegenheimer Gmbh, 8900 Augsburg, De

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856848A (en) * 1955-05-05 1958-10-21 Harris Intertype Corp Means for dampening the surface of a rotating cylinder
FR2078140A5 (fr) * 1970-02-04 1971-11-05 Gestetner Ltd
DE2538105A1 (de) * 1974-09-11 1976-04-01 Hans Jacob Dipl Ing Moestue Vorrichtung zum reinigen eines zylinders einer druckmaschine
FR2284455A1 (fr) * 1974-09-11 1976-04-09 Moestue Hans Dispositif pour nettoyer un cylindre d'une machine a imprimer
JPS553984A (en) * 1978-06-27 1980-01-12 Ricoh Co Ltd Blancket drum cleaning apparatus for offset press
DE3120983A1 (de) * 1980-05-28 1982-04-29 Dai Nippon Insatsu K.K., Tokyo Vorrichtung zum waschen des gummituchzylinders einer rotations-offsetpresse
EP0213597A2 (fr) * 1985-08-27 1987-03-11 Toray Industries, Inc. Presse à imprimer polychrome
FR2595626A1 (fr) * 1986-03-11 1987-09-18 Leroy Pierre Etienne Nouvel appareil destine a la reproduction de documents par procede lithographique
US4765242A (en) * 1986-12-04 1988-08-23 Kabushiki Kaisha Asahi Shimbunsha Device for cleaning blanket mounted around cylindrical drum of a printing machine
EP0325381A2 (fr) * 1988-01-19 1989-07-26 Jimek Ab Système de commande pour commander un dispositif de mouillage par pulvérisation
EP0334173A1 (fr) * 1988-03-23 1989-09-27 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif pour nettoyer les surfaces de travail d'une machine, en particulier d'une machine d'imprimerie
JPH01242252A (ja) * 1988-03-25 1989-09-27 J P Ii Kk 水無し平版印刷機の版胴装置
JPH0310842A (ja) * 1989-06-08 1991-01-18 Toppan Printing Co Ltd ブランケット洗浄方法
JPH0441241A (ja) * 1990-06-06 1992-02-12 Nippon Baldwin Kk 印刷機のシリンダ洗浄装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 004, no. 029 (M - 002) 14 March 1980 (1980-03-14) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 577 (M - 910) 20 December 1989 (1989-12-20) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 120 (M - 1096) 25 March 1991 (1991-03-25) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 217 (M - 1252) 21 May 1992 (1992-05-21) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654350A1 (fr) * 1993-11-12 1995-05-24 Oxy-Dry Maschinen GmbH Procédé pour le nettoyage automatique de cyclindres dans des machines d'impression à commande centrale
US6109182A (en) * 1993-11-12 2000-08-29 Oxy-Dry Maschinen Gmbh Procedure for fully automatic cylinder cleaning in printing presses having a central control system
FR2718996A1 (fr) * 1994-04-26 1995-10-27 Heidelberger Druckmasch Ag Procédé de lavage de l'enveloppe d'un cylindre d'une machine rotative à imprimer.
DE19508569A1 (de) * 1994-04-26 1995-11-02 Heidelberger Druckmasch Ag Verfahren zum Waschen der Mantelfläche eines Zylinders, vorzugsweise eines Gummituchzylinders von Offset-Rotationsdruckmaschinen
DE19508569B4 (de) * 1994-04-26 2006-04-06 Heidelberger Druckmaschinen Ag Verfahren zum Waschen der Mantelfläche eines Gummituchzylinders von Offset-Rotationsdruckmaschinen
EP0855269A1 (fr) * 1997-01-22 1998-07-29 Baldwin-Japan Ltd. Procédé de nettoyage de la surface extérieure d'un cylindre
US6042655A (en) * 1997-01-22 2000-03-28 Baldwin-Japan Ltd. Cylinder cleaning method
CN1092567C (zh) * 1997-01-22 2002-10-16 日本宝德温株式会社 清洁胶印机滚筒外表面的方法
EP1078742A1 (fr) * 1999-07-31 2001-02-28 Koenig & Bauer Aktiengesellschaft Methode de nettoyge des cylindres dans des presses rotatives

Also Published As

Publication number Publication date
DE4216243A1 (de) 1993-11-18
JPH0623972A (ja) 1994-02-01
DE4216243C2 (de) 1995-10-12

Similar Documents

Publication Publication Date Title
DE3884134T2 (de) Vorrichtung für das Reinigen eines Zylinders.
DE3714143C2 (fr)
EP2349722B1 (fr) Dispositif et procédé de nettoyage de blanchets sur des cylindres blanchets
DE3430333C2 (fr)
CH647718A5 (de) Vorrichtung zum waschen von zylindern in druckmaschinen.
DE4216243C2 (de) Vorrichtung zur Reinigung eines Zylinders
DE3445012A1 (de) Druckmaschine
DE2456392C3 (fr)
EP0654350B1 (fr) Procédé pour le nettoyage automatique de cyclindres dans des machines d'impression à commande centrale
DE2531886C3 (de) Verfahren und Vorrichtung zur Reinigung von Zylindern eines Offsetdruckwerkes
EP1338418B1 (fr) Machine à imprimer avec un dispositif de nettoyage du cliché
EP0858891B1 (fr) Méthode et dispositif de nettoyage d'une partie d'une unité d'impression d'une machine à imprimer offset
DE2951649C2 (de) Farbkasten von Druckmaschinen
DE3843473C2 (de) Feuchtwerk
EP0715955B2 (fr) Procédé à nettoyer un cylindre d'une machine d'impression
EP0107121B1 (fr) Cylindre porte-plaque pour une rotative offset comprenant un dispositif pour explorer zone par zone l'encrage de la plaque
DE3714160A1 (de) Farbwerk fuer eine druckmaschine
DE3326699C1 (de) Vorrichtung zum Befeuchten einer Druckplatte
DE10154810A1 (de) Verfahren zur Reduzierung von Vibrationen in einer Druckmaschine
DE3538256A1 (de) Farbkasten fuer offset- oder hochdruckmaschinen
DE4426992C2 (de) Verfahren und Vorrichtung zur Zustandsüberwachung einer umstellbaren Bogendruckmaschine
DE3213540C2 (de) Rotations-Druckmaschine für den Druck mit hoch viskosen Farben
DD274003A1 (de) Rakeleinrichtung fuer offsetdruckmaschinen
EP3941747B1 (fr) Procédé pour déterminer une position de contact mutuel entre un cylindre d'impression et au moins un contre-cylindre d'une machine d'impression flexographique
EP0770483B1 (fr) Dispositif de nettoyage pour nettoyer des cylindres d'un appareil à imprimer offset

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19931008

17Q First examination report despatched

Effective date: 19950801

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GRAFOTEC GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19960727