EP0747217B1 - Procédé et dispositif pour nettoyer un cylindre d'une machine à imprimer rotative - Google Patents

Procédé et dispositif pour nettoyer un cylindre d'une machine à imprimer rotative Download PDF

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Publication number
EP0747217B1
EP0747217B1 EP96107715A EP96107715A EP0747217B1 EP 0747217 B1 EP0747217 B1 EP 0747217B1 EP 96107715 A EP96107715 A EP 96107715A EP 96107715 A EP96107715 A EP 96107715A EP 0747217 B1 EP0747217 B1 EP 0747217B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
housing
cleaning
suction
printing press
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
EP96107715A
Other languages
German (de)
English (en)
Other versions
EP0747217A3 (fr
EP0747217A2 (fr
Inventor
Thomas Walther
Andreas Lippold
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0747217A2 publication Critical patent/EP0747217A2/fr
Publication of EP0747217A3 publication Critical patent/EP0747217A3/fr
Application granted granted Critical
Publication of EP0747217B1 publication Critical patent/EP0747217B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/23—Brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/26—Spraying devices

Definitions

  • the invention relates to a method and a device for cleaning a cylinder Rotary printing machine according to the preamble of the main claim.
  • Procedure and The device is particularly suitable for offset rotary printing presses with a Pressure cylinder assigned housing, which towards the cylinder surface to be cleaned Has opening.
  • the invention is particularly suitable for cleaning blanket cylinders, Impression cylinders as well as plate cylinders or forme cylinders.
  • the cleaning device has a housing with a Cylinder jacket adjacent opening.
  • a brush roller serves as a cleaning element, which is supplied with a cleaning fluid.
  • the housing also has a return line for the contaminated cleaning fluid. The cleaning fluid is used in the washing process nebulized and the mist is sucked back through the return line inside the housing.
  • a suction fan sucks the cleaning fluid mist and used cleaning fluid and dirt particles from inside the housing.
  • JP-1-63 004948 is a method for cleaning a cylinder of a rotary printing press with one that can be turned on and off on the cylinder, over the full Known cylinder-wide, closed housing.
  • the case points an opening associated with the cylinder and a device for feeding a gaseous abrasive as cleaning agent and a device for removal (Suction) of impurities.
  • PCT-WO / 91/12137 A1 is a method and an apparatus for cleaning of a cylinder of a rotary printing press known as a cleaning agent Uses carbon dioxide snow or pellets. Using compressed air that will Cleaning agent from nozzles distributed over the cylinder width to preferably one Blanket cylinder applied.
  • DE-U-9201664 is a cleaning device with an outer and known an inner housing. There is a gap between the two housings, with the outlet opening of the inner housing and with the outlet opening of the Overall device is connected.
  • the cleaning device is as an axially parallel cleaning head traversing to the cylinder, which is located inside Housing has a sponge or a brush. Sponge or brush can be wetted by a cleaning agent and brought into contact with the cylinder.
  • the invention is therefore based on the object of a method and a cleaning device to develop for a printing press of the type mentioned, in which the apparatus expenditure for the cleaning operation is low and at the same time the cleaning agent is prevented from escaping from the housing.
  • the cleaning device essentially consists of one side open housing, the opening of which is assigned to the printing press cylinder to be cleaned is.
  • the cleaning device is attached to the outer surface of the printing press cylinder and can be switched off and is preferably used in printing press cylinders with gripper bridges whose area can be lifted off the cylindrical surface.
  • the opening of the housing of the cleaning device a suction is assigned.
  • the cleaning process follows the principle of beam cutting, also called beam lapping. Steel cutting or beam lapping is a cutting process with a geometrically undefined cutting edge. At the Cleaning process, however, no material is removed from the cylinder surface, but only the components adhering to the surface, such as paint, varnish or Impurities.
  • a soft, powdery abrasive is used by an energy source by means of pressure or with a centrifugal effect on the cylinder surface to be cleaned upset.
  • the powdery abrasives are based on carbonates or bicarbonates of the alkali metals.
  • The preferably by means of compressed air to the cleaning surfaces of the grains of the abrasive that impact the printing press cylinder shatter (preferably every single grain of the abrasive) into a variety of Particles, which in turn are cutting grains.
  • These cutting grains in turn point a variety of geometrically indefinite cutting edges and are based on the energy source preferably entrained several times so that the powdered abrasive as a whole Grain occurs once on the cylinder surface and then at least as particles hits the cylinder surface to be cleaned again.
  • the impact speed is lower than when it is fed of abrasives in grain form using compressed air or under centrifugal action.
  • the grains as well as the particles take the constituents adhering to the surface, such as paint, Paint, paper dust or other dirt on and / or carry this from the Surface.
  • the printing press cylinder surface itself is not removed.
  • the Printing machine also has a feeder 4 and a delivery arm 5.
  • Each printing unit 1 has, inter alia, a blanket cylinder and an impression cylinder, which are referred to here as the printing press cylinder 6.
  • Each press cylinder 6 is assigned a cleaning device 7.
  • the painting unit 2 has, among other things Forme cylinder and an impression cylinder on, which also here as a printing press cylinder 6 are designated.
  • the cleaning of the paint-carrying rollers e.g. an anilox roller, also possible.
  • the rollers are analogous to the printing press cylinder 6 to consider.
  • a cleaning device 7 has a housing 8 which is adjacent to the Printing press cylinder 6 has an opening 12.
  • the housing 8 is a Row of nozzles 13 arranged.
  • the housing 8 has an approximately rectangular cross section and extends over the full width of the lateral surface of the printing press cylinder 6.
  • the opening 12 in the housing 8 faces the outer surface of the printing press cylinder 6 towards an elastic sealing element 14.
  • the sealing element 14 is on the Housing 8 or the suction 9 arranged and serves to seal the interior of the housing to the environment.
  • the sealing element 14 is suitable e.g. as a brush (Fig. 3) or as a rubber-elastic sealing lip (Fig. 6).
  • a suction 9 is arranged at the opening 12 of the housing 8 .
  • the suction 9 can completely open the opening 12 or be arranged only partially enclosing.
  • the suction 9 is fundamental arranged separately from the interior of the housing 8.
  • the suction 9 can be outside guided around the housing 8 or into the wall of the housing 8, separated from the interior, be integrated.
  • Suction 9 is followed by a line system 10, which has a disposal device 22 is connected for the abrasive.
  • a processing plant can also be used be subordinate. From this the blasting agent can be cleaned or processed condition can be reintroduced into the circuit.
  • the nozzles 13 with a supply line for the powder Blasting media and equipped for compressed air (Fig. 2 to 4 and 6 to 7).
  • Fig. 5 own the nozzles 13 are only a supply line for the powdery abrasive.
  • the blasting agent is transported by a centrifugal device 18.
  • the cleaning device 7 is parallel to the surface of the printing press cylinder 6 rotating brushes 15 formed.
  • the brushes 15 are coupled with a drive.
  • the direction of rotation of the brushes 15 is in the interior of the housing 8 directed.
  • the sides of the Cleaning device 7 have sealing lips 14 as sealing element.
  • a separate pneumatic system 19 e.g. a number of fans, assigned.
  • the cleaning device 7 is the cleaning device 7 with a conventional printing press cylinder cleaning device merged.
  • the conventional one The cleaning device has a cleaning element 20, e.g. a wash brush. Furthermore, spray nozzles 16 for supplying cleaning fluid, e.g. based on vegetable Detergents and water.
  • a doctor blade 23 acts as a wiper for the cleaning element 20.
  • the conventional cleaning device also has one Discharge for the contaminated cleaning fluid.
  • the powdery abrasive consists of or contains sodium bicarbonate at least.
  • the abrasive is soft, fine-grained and water-soluble.
  • the procedural steps are carried out in the powdery abrasive controlled in fixed angular positions of the cylinder 6 by means of an energy source is supplied to the surface of the cylinder 6 to be cleaned.
  • the angular positions are preferably defined by the channel edges of the cylinder 6. This is supposed to Contamination of the cylinder channel can be prevented.
  • the on the cylinder 6 adhering impurities removed and vacuumed.
  • the blasting agent supply stopped at an angle (e.g. in the area of the cylinder channel) and furthermore the still existing blasting medium is extracted or blasting medium is continuously applied to the surface of the cylinder 6 to be cleaned and aspirated at the same time.
  • the mode of action is as follows:
  • the cleaning device 7 is normally in the parked position for Printing press cylinder 6. Should the outer surface of the printing press cylinder 6 washed the row of nozzles 13 is controlled with powdered abrasive provided.
  • the powdery abrasive is pneumatically or by means of the spinner transported to the surface of the printing press cylinder 6 to be cleaned. There it hits the paint / lacquer / dirt particles and essentially tears them off the Cylinder surface.
  • each grain of the abrasive breaks into one Large number of particles (with smaller grain size) and hits again with reduced energy on the surface of the printing press cylinder 6 and carries again Paint / varnish / dirt particles. This can be done several times, with suction 9 is coupled to a suction source.
  • the cleaning device 7 in excavated this area air is supplied from the environment via the gap 11 and from the Color residues, paper dust and the powdery blasting material are found inside the housing 8 itself and other debris via the suction 9, the line system 10 of the Suction source 24 aspirated.
  • the pipe system 10 is chained together so that each Cleaning device 7 in the printing press is connected to the suction source 24. Is the cleaning process ends, the cleaning device 7 from the printing press cylinder 6 turned off. The supply of powdered abrasives as well as the suction source 24 are then stopped.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (16)

  1. Procédé pour nettoyer un cylindre (6) d'une machine d'impression rotative, comportant un boítier (8) s'étendant sur toute la largeur du cylindre et pouvant être appliqué contre et éloigné du cylindre rotatif (6), lequel boítier présente une ouverture (12) associée au cylindre (6) et au moins un dispositif (13) pour amener un agent de nettoyage, et au moins un dispositif (9,22,24) pour évacuer des impuretés,
    caractérisé en ce que, en étant commandé de façon dépendant de positions angulaires déterminées du cylindre, un agent de pulvérisation sous forme de poudre est transporté, comme agent de nettoyage, par un porteur d'énergie sur la surface de cylindre à nettoyer, qui de plus enlève les impuretés adhérant au cylindre, et les impuretés ainsi que l'agent de nettoyage sont aspirés de la surface du cylindre et hors du boítier.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'une position angulaire déterminée est formée par le bord du canal avant dans le sens de rotation du cylindre.
  3. Procédé selon la revendication 1,
    caractérisé en ce qu'une position angulaire déterminée est formée par le bord du canal arrière dans le sens de rotation du cylindre.
  4. Procédé selon les revendications 1 à 3,
    caractérisé en ce que l'amenée de l'agent de nettoyage est arrêtée dans la zone du canal du cylindre et les impuretés ainsi que l'agent de nettoyage sont aspirés.
  5. Procédé selon les revendications 1 à 4,
    caractérisé en ce que, lorsque l'amenée de l'agent de nettoyage est arrêtée, de l'eau, sous forme d'une impulsion de pulvérisation, est introduite dans le boítier à partir d'au moins une amenée supplémentaire, et l'agent de nettoyage et le mélange aqueux sont évacués.
  6. Dispositif pour nettoyer un cylindre (6) d'une machine d'impression rotative, comportant un boítier (8) s'étendant sur toute la largeur du cylindre et pouvant être appliqué contre et éloigné du cylindre rotatif (6), lequel boítier présente une ouverture (12) associée au cylindre (6) et au moins un dispositif (13) pour amener un agent de nettoyage, et au moins un dispositif (9,22,24) pour évacuer des impuretés,
    caractérisé en ce que l'ouverture (12) présente une aspiration (9), séparée de l'intérieur du boítier (8), entourant l'ouverture (12), et en ce que, dans le boítier (8), au moins un dispositif de pulvérisation (13) pour appliquer un agent de pulvérisation sous forme de poudre est agencé.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que l'aspiration (9) entoure complètement l'ouverture (12) du boítier (8).
  8. Dispositif selon la revendication 7,
    caractérisé en ce que l'aspiration (9) est agencée à l'extérieur du boítier (8).
  9. Dispositif selon la revendication 8,
    caractérisé en ce que l'aspiration (9) est intégrée dans la paroi du boítier (8).
  10. Dispositif selon la revendication 9,
    caractérisé en ce que l'aspiration (9) est reliée, par l'intermédiaire d'un système de conduits (10), à un dispositif d'évacuation (22) disposé en aval et à une source d'aspiration (24).
  11. Dispositif selon la revendication 10,
    caractérisé en ce que plusieurs aspirations (9) sont chaínées dans une machine d'impression par un dispositif d'évacuation (22) disposé en aval et une source d'aspiration (24).
  12. Dispositif selon la revendication 6,
    caractérisé en ce qu'au moins une brosse rotative est agencée dans la zone de l'ouverture (12).
  13. Dispositif selon la revendication 6,
    caractérisé en ce que, à l'intérieur du boítier (8), il est agencé au moins un dispositif centrifuge (18), qui est en liaison active avec au moins un dispositif de pulvérisation (13).
  14. Dispositif selon la revendication 6,
    caractérisé en ce que, à l'intérieur du boítier (8), un système pneumatique (19) est associé au dispositif de pulvérisation (13).
  15. Dispositif selon la revendication 6,
    caractérisé en ce que l'agent de pulvérisation est constitué de carbonates ou d'hydrogénocarbonates des métaux alcalins ou contient ceux-ci.
  16. Dispositif selon la revendication 15,
    caractérisé en ce que l'agent de pulvérisation est constitué d'hydrogénocarbonate de sodium ou contient celui-ci.
EP96107715A 1995-06-06 1996-05-15 Procédé et dispositif pour nettoyer un cylindre d'une machine à imprimer rotative Expired - Lifetime EP0747217B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19520551 1995-06-06
DE19520551A DE19520551A1 (de) 1995-06-06 1995-06-06 Verfahren und Vorrichtung zum Reinigen eines Zylinders einer Rotations-Druckmaschine

Publications (3)

Publication Number Publication Date
EP0747217A2 EP0747217A2 (fr) 1996-12-11
EP0747217A3 EP0747217A3 (fr) 1998-01-07
EP0747217B1 true EP0747217B1 (fr) 2000-07-05

Family

ID=7763694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107715A Expired - Lifetime EP0747217B1 (fr) 1995-06-06 1996-05-15 Procédé et dispositif pour nettoyer un cylindre d'une machine à imprimer rotative

Country Status (5)

Country Link
US (1) US5732631A (fr)
EP (1) EP0747217B1 (fr)
JP (1) JPH08332718A (fr)
AT (1) ATE194310T1 (fr)
DE (2) DE19520551A1 (fr)

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Also Published As

Publication number Publication date
ATE194310T1 (de) 2000-07-15
EP0747217A3 (fr) 1998-01-07
DE19520551A1 (de) 1996-12-12
JPH08332718A (ja) 1996-12-17
DE59605537D1 (de) 2000-08-10
US5732631A (en) 1998-03-31
EP0747217A2 (fr) 1996-12-11

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