EP0378180A2 - Procédé et dispositif de nettoyage des cylindres de blanchet d'une presse rotative pour bandes. - Google Patents

Procédé et dispositif de nettoyage des cylindres de blanchet d'une presse rotative pour bandes. Download PDF

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Publication number
EP0378180A2
EP0378180A2 EP90100389A EP90100389A EP0378180A2 EP 0378180 A2 EP0378180 A2 EP 0378180A2 EP 90100389 A EP90100389 A EP 90100389A EP 90100389 A EP90100389 A EP 90100389A EP 0378180 A2 EP0378180 A2 EP 0378180A2
Authority
EP
European Patent Office
Prior art keywords
web
cleaning
blanket cylinder
blanket
washing
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
EP90100389A
Other languages
German (de)
English (en)
Other versions
EP0378180A3 (fr
EP0378180B1 (fr
Inventor
Franz Waizmann
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 Gegenheimer GmbH
Original Assignee
Baldwin Gegenheimer 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 Gegenheimer GmbH filed Critical Baldwin Gegenheimer GmbH
Publication of EP0378180A2 publication Critical patent/EP0378180A2/fr
Publication of EP0378180A3 publication Critical patent/EP0378180A3/fr
Application granted granted Critical
Publication of EP0378180B1 publication Critical patent/EP0378180B1/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
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders

Definitions

  • the invention relates to a method for cleaning blanket cylinders of a web-fed rotary printing press according to the method claim and a device for carrying out the method according to the corresponding device claim.
  • the cleaning of rubber printing cylinders of a web-fed rotary printing press serves to remove ink and paper dust residues which, in the case of certain accumulations, interfere with a point-sharp printout in autotypical halftone printing and also with the full-surface print.
  • the cleaning procedure itself is carried out using a pressure element arranged opposite the cylinder surface, which rubs on the rotating rubber blanket cylinder.
  • the dirt is removed via a cleaning cloth that is in wiping contact with the rubber blanket cylinder and also via the printing substrate itself, the process of which can remain switched on during the cleaning of the rubber blanket.
  • solvent consisting of agents and water, is applied to the blanket surface.
  • the US 35 08 711 shows a procedure in which cleaning liquid is distributed from a spray bar arranged in the cylinder-web gap, which passes into the retracting gap of the rubber cylinder and onto the web.
  • the supply of cleaning solution and the corresponding wiping or removal point are concentrated in a narrow, adjacent area.
  • the cleaning cloth according to DE 30 05 469 A1 the soaked cloth is simultaneously loosened and wiped off. If the web run remains, dirt will only be removed to a limited extent if the rubber blanket does not shrink enough. As can be seen. the cleaning solution is then transferred back to the rubber blanket surface and the dirt is transferred back from the rubber blanket.
  • Exposure time and exposure period are not taken into account.
  • the task is therefore to intensify the blanket cleaning process with the targeted use of the material flow and the effective times, so that shortening and saving of waste is achieved.
  • the solution is based on the utilization of the cleaning cycles. With one forward and one back transfer per blanket cylinder rotation, there is a stage with a cleaning circuit. A unit quantity of the cleaning liquid is applied per rotation. If there are several application points for the cleaning liquid, the exposure time from the preceding point to the next point to the dirt removal point is longer, which benefits the cleaning efficiency. In addition, a further cleaning cycle is created when a further dirt removal is set up between the preceding and the following point.
  • at least two feed points for the cleaning liquid with at least two retransfer points for the dirt form at least two circuits.
  • a retransmission point consists of an equipped cleaning element, which is a pressed-on cleaning cloth. The further transfer point of dirt from the rubber blanket runs to the web.
  • the inventive measure is assigned a further procedural step, which consists in that a liquid is applied to the web before the cylinder going into cleaning.
  • This railway fluid has a non-stick effect.
  • the dirt leaving the rubber blanket on the web is measured.
  • a measuring sensor is provided after the printing units, which registers the removal of dirt and displays it as desired. In comparison with previous values of previous cleaning cycles, information is obtained from this for the upcoming washing program.
  • a tracking control is provided in the gusset of the cylinder outlet, with which the deflection of the web is sensed when it is glued to the rubber blanket. The amount of deflection may be used to control the cleaning process with regard to the clock frequency of the pressing element, the amount and distribution of the cleaning liquid over the various supply pipes, the cleaning cloth being advanced and the control of the web liquid.
  • the printing web 1 runs from the roll through the printing units 2.1-2.5, in which the respective image colors are printed in register.
  • the blanket cylinder 3 is dyed to print the web 1.
  • the rubber blanket dyed via the inking unit and the plate cylinder transfers ink and dampening agent coming from the dampening of the plate cylinder to web 1.
  • Fig. 1 are upstream, seen in the web development direction, arranged in front of the blanket cylinder 3 cleaning devices with washing bars 4 on the blanket cylinder 3 for the face printing and below on the blanket cylinder 3 for the impression.
  • the washing bar 4 which extends over the width of the blanket cylinder 3, has a pressing element 6, over which a cleaning cloth 5 with associated winding and unwinding 7 is guided.
  • a spray pipe 8.1 Seen in the direction of rotation of the blanket cylinder 3 in front of the wash bar 4 is a spray pipe 8.1.
  • another spray tube 8.2 After the washing bar 4 there is another spray tube 8.2, which runs depending on how the unwinding direction of the winding and unwinding 7.
  • Cleaning liquid applied to the blanket surface and the cleaning cloth 5.
  • the spray tube 8.1 is attached at the level of the winding of the used cleaning cloth 5, the spray tube 8.1 is provided only for wetting the rubber blanket.
  • Cleaning liquid can also be applied to the rubber blanket from the spray tube 8.3, which is arranged on the side of the rubber blanket cylinder 3 opposite the washing bar 4 in the free area between the roller mill of the inking unit and the dampening unit and the web 1.
  • the cleaning liquid essentially consists of an aqueous phase for the suspension of paper dust adhering to the rubber blanket and of special solvents for removing paint residues.
  • the spray tube 8.1 is arranged for the action of cleaning liquid on the area rotating towards the wash bar.
  • FIG. 2 a which shows the washing bar 4 upstream of the blanket cylinder 3
  • the effect of the spray tube 8.2 is aimed at the area of the blanket cylinder 3 rotating toward the web 1.
  • the spray tube 8.3 transfers cleaning liquid to the area rotating away from the web 1.
  • the paths of the cleaning liquid over the rubber blanket run according to the arrangement according to FIG. 2 a, essentially from spray tube 8.1 to cleaning cloth 5, from spray tube 8.2 to web 1 and from spray tube 8.3 to the cleaning cloth 5. It goes without saying that each applied parts of cleaning liquid are not completely absorbed at the next wiping or transfer point. So run Small amounts of cleaning fluid last longer, and residues of cleaning fluid also reach the web 1 via the wiping contact of the cleaning cloth 5.
  • the spray tube 8.2 is arranged after the wash bar 4 as in the case according to FIG. 2 a, but it is not located in front of the web 1.
  • the path of the cleaning liquid from the spray tube 8.2 to the web is therefore longer as the path of the cleaning liquid from the spray tube 8.3.
  • an application tube 9 is arranged at a distance from both, which serves to apply a substance to the web 1.
  • the substance is advantageously a non-sticky liquid.
  • the application tube 9 is arranged adjacent to the spray tube 8.2. Due to the arrangement of the washing bar 4 on the back of the blanket cylinder 3 according to FIG. 2 b, however, the application tube 9 is located there next to the spray tube 8.3, but both times the application tube 9 is arranged closer to the web 1, so that a targeted effect of the liquid to be applied the web 1 is created. Since the web liquid covers part of the suction or loading capacity of the web 1, the amounts of the cleaning liquid and the web liquid used have to be adjusted among themselves. Furthermore, the properties of the web liquid are to be adjusted so that the cleaning process with regard to the loosening of the dirt on the rubber blanket and with regard to the picking up of the dirt by the cleaning cloth 5 and by the web 1 remain largely free of side effects.
  • the web liquid is guided to the application tube 9 by means of actuators.
  • the amount pumped can also be measured for precise dosing.
  • the application of the web liquid can with regard to different areas covering zones, resulting in zones with different contamination on the blanket cylinder 3 with zones below different course of adhesive strength also take place with zonal distribution.
  • supply lines to the application tube 9 which can be acted upon variably and zone-wise are provided. Otherwise, nozzles that do not drip can be opened to different degrees during zone operation in order to achieve zone-wise distribution.
  • the time applied to the application tube 9 with web fluid results in connection with the timing of the blanket cleaning in accordance with the timing starting from control circuit 1 for the web fluid, the control sequence of the cleaning process and the application of the web fluid being expediently based on the advance of the application.
  • the application of the web liquid in the web running direction can be adjusted.
  • the control part 10.2 for the cleaning device comprises the control of the motor for winding and unwinding 7 of the cleaning cloth 5, for the actuation of the pressing element 6 and for the actuation of the actuators for the spray tubes 8.1 to 8.3.
  • a further spray pipe 8.4 for spraying cleaning liquid onto the cleaning cloth 5 can expediently be installed on the side facing away from the blanket cylinder 3.
  • the control circuit 10.1 for the railway fluid passes control signals to the application tube 9.
  • Inputs for the measuring sensor 15 and for the overrun control device 13 can be connected to the control.
  • the sensor 15 is used for detection the amount of dirt coming off during cleaning.
  • the sensor 15 provides information about the efficiency of the cleaning process designed with a washing program.
  • the cleaning process should be short in duration with little waste.
  • the measuring sensor 15 shows the extent to which, when the web 1 is wetted with a certain amount of web fluid, the dirt is removed properly via the web 1.
  • the run-on control 13 for measuring the run-on 14 supplies a signal variable about the prevailing adhesive forces between web 1 and blanket cylinder 3. A high run-on value is counteracted by increasing the amount of web fluid.
  • the downstream spray tube 8.3 can be used according to FIG. 2 a as application tube 9 for the web 1 running in the printing nip of the next printing unit 2.2 to 2.5.
  • the control 10 consists of the control circuit 10.1 for the web fluid, the control part 10.2 for the cleaning device, the printing press control 10.3 and the control station 10.4 for the printing press.
  • Manual input parts 11 are provided for the component presetting for engaging the cleaning device and for engaging the application of the web fluid.
  • Supply 12 takes place from boilers with pumps in the case of normally set up monitoring bodies.
  • the web fluid can be run until the restart phase.
  • the web liquid is applied to each side of the web 1 if necessary.
  • the side of the web 1 facing the satellite cylinder has no substantial dirt removal, so that the use of the web fluid is not mandatory.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP90100389A 1989-01-11 1990-01-09 Procédé et dispositif de nettoyage des cylindres de blanchet d'une presse rotative pour bandes. Expired - Lifetime EP0378180B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900666 1989-01-11
DE3900666A DE3900666C1 (fr) 1989-01-11 1989-01-11

Publications (3)

Publication Number Publication Date
EP0378180A2 true EP0378180A2 (fr) 1990-07-18
EP0378180A3 EP0378180A3 (fr) 1991-01-30
EP0378180B1 EP0378180B1 (fr) 1995-06-07

Family

ID=6371896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100389A Expired - Lifetime EP0378180B1 (fr) 1989-01-11 1990-01-09 Procédé et dispositif de nettoyage des cylindres de blanchet d'une presse rotative pour bandes.

Country Status (3)

Country Link
EP (1) EP0378180B1 (fr)
AT (1) ATE123444T1 (fr)
DE (2) DE3900666C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909119C2 (de) * 1989-03-20 1997-01-23 Heidelberger Druckmasch Ag Wascheinrichtung für eine Druckmaschine
US5259313A (en) * 1991-12-20 1993-11-09 Heidelberg Harris Gmbh Method and apparatus for cleaning an inking mechanism and/or a printing mechanism in printing units of rotary printing machines
DE4401275C2 (de) * 1994-01-18 1999-05-12 Roland Man Druckmasch Einrichtung zum Reinigen der Übertragungszylinder

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508711A (en) * 1967-12-29 1970-04-28 Ryco Graphic Mfg Fluid dispensing system
DE2159115A1 (fr) * 1970-12-10 1972-06-22
DE3005469A1 (de) * 1979-04-19 1980-10-30 Baldwin Gegenheimer Corp Waschvorrichtung eines drucktuchzylinders einer druckmaschine mit einem reinigungstuch
DE3435487A1 (de) * 1983-09-30 1985-04-18 Dai Nippon Insatsu K.K. Vorrichtung zum voreinstellen von plattenzylindern fuer die registereinstellung in einer offset-druckpresse
JPS63188050A (ja) * 1987-01-31 1988-08-03 Dainippon Printing Co Ltd 印刷機ゴム胴の紙粉除去装置
JPH01249454A (ja) * 1988-03-31 1989-10-04 Toppan Printing Co Ltd オフセット印刷校正機用ブランケット洗浄機

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647525A (en) * 1959-10-05 1972-03-07 Dahlgren Mfg Co Method and means for applying liquid to a moving web
DE1809780A1 (de) * 1968-11-19 1971-06-16 Web Press Eng Inc Verfahren und Vorrichtung zum Reinigen von Gummituchzylindern an Druckmaschinen
DD156239A1 (de) * 1981-01-07 1982-08-11 Eva Luebbe Verfahren zur korrektur von abweichungen der einfaerbung und feuchtung an offsetdruckmaschinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508711A (en) * 1967-12-29 1970-04-28 Ryco Graphic Mfg Fluid dispensing system
DE2159115A1 (fr) * 1970-12-10 1972-06-22
DE3005469A1 (de) * 1979-04-19 1980-10-30 Baldwin Gegenheimer Corp Waschvorrichtung eines drucktuchzylinders einer druckmaschine mit einem reinigungstuch
DE3435487A1 (de) * 1983-09-30 1985-04-18 Dai Nippon Insatsu K.K. Vorrichtung zum voreinstellen von plattenzylindern fuer die registereinstellung in einer offset-druckpresse
JPS63188050A (ja) * 1987-01-31 1988-08-03 Dainippon Printing Co Ltd 印刷機ゴム胴の紙粉除去装置
JPH01249454A (ja) * 1988-03-31 1989-10-04 Toppan Printing Co Ltd オフセット印刷校正機用ブランケット洗浄機

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 464 (M-771)(3311) 06 Dezember 1988, & JP-A-63 188050 (DAINIPPON PRINTING CO LTD) 03 August 1988, *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 593 (M-914)(3941) 27 Dezember 1989, & JP-A-01 249454 (TOPPAN PRINTING CO LTD) 04 Oktober 1989, *

Also Published As

Publication number Publication date
EP0378180A3 (fr) 1991-01-30
DE3900666C1 (fr) 1990-07-26
DE59009192D1 (de) 1995-07-13
ATE123444T1 (de) 1995-06-15
EP0378180B1 (fr) 1995-06-07

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