EP1060888B1 - Dispositif de nettoyage pour l'industrie graphique - Google Patents

Dispositif de nettoyage pour l'industrie graphique Download PDF

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Publication number
EP1060888B1
EP1060888B1 EP00107021A EP00107021A EP1060888B1 EP 1060888 B1 EP1060888 B1 EP 1060888B1 EP 00107021 A EP00107021 A EP 00107021A EP 00107021 A EP00107021 A EP 00107021A EP 1060888 B1 EP1060888 B1 EP 1060888B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure chamber
compressed air
valve
cleaning device
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
EP00107021A
Other languages
German (de)
English (en)
Other versions
EP1060888A1 (fr
Inventor
Manfred Langenmayr
Bernhard Grinzinger
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 Germany GmbH
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Baldwin Germany GmbH
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Filing date
Publication date
Application filed by Baldwin Germany GmbH filed Critical Baldwin Germany GmbH
Publication of EP1060888A1 publication Critical patent/EP1060888A1/fr
Application granted granted Critical
Publication of EP1060888B1 publication Critical patent/EP1060888B1/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
    • B41P2235/24—Wiping devices using rolls of cleaning cloth
    • B41P2235/246—Pressing the cleaning cloth against the cylinder

Definitions

  • the invention relates to a cleaning device for cleaning a running Dirt surface in a machine of the graphic industry according to the Preamble of claim 1.
  • a cleaning device of this type is known from US 4,344,361 (DE 30 05 469 C2) known.
  • Dirt surfaces in machines in the graphics industry, especially in Printing presses are the different cylinders such as Blanket cylinder, plate cylinder and impression cylinder, but also too printing paper webs and sheets.
  • the dirt from paper webs and paper sheets in particular consists of paper dust, which is to achieve good print quality should be removed before printing.
  • the cleaning cloth can be a pre-moistened cloth or according to the intermittent feed of the cleaning cloth intermittently be moistened in the cloth section which is between the Pressure element and the dirt surface to be cleaned is introduced.
  • the cleaning cloth section dry cleaning cloth section through the pressure element to the press the washed cylinder surface. It can be seen that during of the washing operation the washcloth several times through the pressure element pressed the dirt surface to be cleaned and lifted off again must become.
  • the invention is intended to solve the problem for the Shorten cleaning time required.
  • the invention can also be used for cleaning devices which in a machine of the graphic industry, in particular in a Printing machine, automatically controlled alternately one of two or of several cylinders can be assigned to them one after the other clean.
  • Pressure relief valve and / or the outlet pressure of the pressure regulator automatically adapt to changing operating conditions.
  • the dirt surface can be a paper web, a paper sheet or a Be cylinders of a printing press, in particular a blanket cylinder, Plate cylinder or impression cylinder.
  • FIG. 1 and 2 show a cylinder 2 with a surface 4 to be cleaned, which the latter is referred to below as a dirt surface.
  • the cylindrical dirt surface 4 of the cylinder 2 to be cleaned lies with Small distance axially parallel to a wash bar 5, which axially parallel to the cylinder 2 a carrier 7 and one carried by this Has rubber lip 6. They form a pneumatic one between them Pressure chamber 8 for inflation and thus for turning on the rubber lip 8 the dirt surface 4.
  • a cloth section 18 extends over the rubber lip 6 Cleaning cloth 10, which is then intermittently by one predetermined distance from a clean cloth roll 12 to a dirty cloth roll 14 is transportable if the cleaning cloth according to FIG. 1 of the Dirt surface 4 is parked (removed).
  • the cleaning cloth 10 can be pre-moistened and / or by a Humidifier 16 to be moistened before it enters the gap is transported between the rubber lip 6 and the dirt surface 4.
  • a pneumatic pressure line 20 is connected to the pressure chamber 8, which by means of a valve arrangement 22, 24 alternately with a Compressed air source 26 or can be connected to a pressure relief outlet 28 and which on the side connected to the pressure chamber 8 of the Valve arrangement 22, 24 with a pressure switch 31 according to FIG. 1 or a Pressure relief valve according to FIG. 2 is provided.
  • the pressure switch 31 or the pressure relief valve 30 is on to be turned on and pressing the cleaning cloth 10 against the dirty surface 4 Pressure set.
  • the pressure of the compressed air source 26 is through a pressure regulator 32 to a much higher pressure than the switching pressure of the Pressure relief valve 30 or the pressure switch 31 set.
  • the valve arrangement 22, 24 can have a single valve with corresponding Switching options or according to FIGS. 1 and 2 from two valves 22 and 24 exist.
  • One valve 22, which is the compressed air supply valve represents, is in the pressure line 20 between the pressure regulator 32 and the Pressure chamber 8 arranged.
  • the other valve 24, which is a Vent valve for venting to the atmosphere can be directly connected to the Pressure chamber 8 or between this and the compressed air supply valve 22 to the Pressure line 20 may be connected.
  • the pressure switch 31 or the pressure relief valve 30 can be connected to the pressure chamber 8 or between the latter and the compressed air supply valve 22 to the pressure line 20 be connected.
  • the outlet pressure of the pressure regulator 32 can be, for example, 2 bar be set.
  • the pressure to open the pressure relief valve 30 or Switching the pressure switch 31 can, for example, be set to 0.6 bar his.
  • An electrical control device 34 which is preferably a processor and contains programs, controls the two valves 22 and 24 of the Valve arrangement depending on predetermined machine conditions.
  • washing mode can be started during which the printing mode is set is, however, the cylinder 2 continues to rotate and paper to be printed continues is transported through the machine.
  • the Rubber lip 6 placed several times on the dirt surface 4 of the cylinder 2 and turned off again, with the cleaning cloth standing still intermittently, when it is pressed against the rotating dirt surface 4.
  • the cleaning cloth 10 is only advanced by a predetermined cloth section 18 transported when it is not rotating according to FIGS. 1 and 2 Dirt surface 4 is present.
  • the cleaning cloth 10th each from the moistening device 16 with water or another If liquid has been moistened, a drying process can be carried out in which a dry cleaning cloth section 18 to the cleaned dirt surface 4 is created.
  • the invention also makes it possible to alternately connect the washing bar 5 to the cylindrical surface of two or more cylinders 2 to make them to be cleaned one after the other. If there are different distances between the Rubber lip 6 and the dirt surfaces 4 to be cleaned are provided, the greater or smaller distance of the rubber lip 6 from the cleaning dirt surface 4 by adjusting the pressure on Pressure regulator 32 are bridged, and / or by appropriate setting of the pressure switch 31 or the pressure relief valve 30, in which he switch should be used for venting. This depends on the machine conditions optionally changing the pressures at the outlet of the pressure regulator 32 and / or of the venting switching pressure on the pressure switch 31 or on the pressure relief valve 30 can be done by the control device 34.
  • a wash bar 5 with a rubber lip 6 is from the prior art is known, for example from said US 4,344,361. Furthermore, from Prior art also known wash bars, which instead of a inflatable rubber lip have multiple pneumatically adjustable cylinders, which press against a flexible element which is similar to the rubber lip 6 is arranged to press a cleaning cloth against a dirty surface. Instead of a rubber lip 6, one can also be perfect in the circumferential direction closed hose can be used. The invention is also for such Embodiments can be used.
  • the invention is not only for cleaning cylindrical surfaces usable by cylinders, but also for cleaning moving ones Sheets of paper and sheets of paper, in particular paper dust from them wipe.
  • the direction of movement 36 of the cleaning cloth 14 shown in FIGS. 1 and 2 and the direction of movement 38 of the dirt surface 4 are only an example understand.
  • the directions of movement can also be reversed or in go in the same direction. It is only essential that between the Cleaning cloth 10 and the dirt surface 4 to be cleaned Relative movement takes place.
  • Another manometer 40 shows the one set on the pressure regulator 32 Outlet pressure.
  • a manometer 42 shows the pneumatic pressure in the Pressure room 8.
  • a pre-moistened cleaning cloth 14 can be used, which is already damp on the cloth roll 12.
  • Compressed air source 26 is typically a compressed air network in a print shop, which have an air pressure of e.g. B. has 6 bar.
  • the compressed air supply path 20 from the Compressed air source 26 to pressure chamber 8 of pressure element 6 contains in Compressed air supply direction successively the pressure regulator 32 to reduce the Network pressure of z. B. 6 bar on z. B. 2 bar or 1.5 bar, which in Fig. 1 in Ventilation valve 22 (compressed air supply valve) shown in the closed position Quick exhaust valve 44 and the pressure switch 31.
  • the quick exhaust valve has a compressed air inlet "P", one Compressed air outlet "A”, and a vent outlet "R” with a Silencer 45.
  • the compressed air supplied from the pressure source 26 flows from the ventilation valve 22 through the compressed air inlet “P” to the compressed air outlet "A” of the Quick exhaust valve 44.
  • the exhaust outlet “R” is thereby locked.
  • the pressure of the compressed air at the compressed air inlet "P” by switching the vent valve 24 from one Closed position in the open position shown in Fig. 1 under one predetermined value drops, then the compressed air outlet automatically "A” vented via the vent outlet "R” and the silencer 45. This results in a faster ventilation of the pressure chamber 8 than when the venting of the pressure chamber 8 only takes place via the vent valve 24 would.
  • the ventilation valve 22 has one at the outlet of the pressure regulator 32 connected compressed air inlet 48 and one to the compressed air inlet "P" of the quick exhaust valve 44 connected compressed air outlet 50.
  • the Vent inlet 46 of the vent valve 24 is at the section 20-3 of the Compressed air supply path 20 connected to the output 50 of the Ventilation valve 22 with the compressed air inlet "P" of the Quick exhaust valve 44 connects.
  • the pressure relief outlet 28 of the Vent valve 24 can also be provided with a muffler 45.
  • the ventilation valve 22 is in each case from the control device 34 Open position and switched from the pressure switch 31 to the closed position.
  • the Control line 49 of the pressure switch 30 is preferably not directly to the Ventilation valve 22 connected, but via the control device 34.
  • the vent valve 24 is both from the control device 34 in the Open position as well as switched to the closed position.
  • the switching process is from the Control device 34 triggered or by the pressure switch 31.
  • the pressure switch 31 (preferably a Vacuum switch), the quick exhaust valve 44, the ventilation valve 22 and the vent valve 24 is arranged as close as possible to the pressure chamber 8, so that there are short flow paths.
  • the pressure switch 31 is preferably connected directly to the pressure chamber 8 or very close to its inlet 56 for the compressed air supply path 20.
  • Pressure chamber 8 can additionally be provided with a pressure relief valve 54 be set to a higher pressure to open than that Target pressure in the pressure chamber 8.
  • the pressure switch 31 of FIG. 1 represents a pressure limitation measure, which according to the embodiment of FIG. 2 also by instead the pressure chamber 8 or close to this, for. B. at its compressed air inlet 56, pressure relief valve 30 connected to the compressed air supply path 20 according to FIG. 2 can be realized, which opens when the air pressure in the pressure chamber 8 rises above the setpoint with which the compressed air increases the pressure element 6 should press the dirt surface. Instead, this could also be done in FIG. 1 shown relief valve 54 can be used.
  • the invention has the advantage that on the one hand not the mostly fluctuating network pressure Compressed air source 26 is used, which leads to inaccurate controls of the Pressure element 6 would lead, and on the other hand by the pressure regulator 32nd a regulated pressure is available that is higher than the set pressure in the Pressure chamber 8 so that the required air pressure quickly from the pressure regulator 32 reaches the pressure chamber 8, but without a higher one in the pressure chamber 8 Pressure is generated as the setpoint.

Landscapes

  • Cleaning In General (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (13)

  1. Dispositif de nettoyage destiné à l'industrie graphique, pour nettoyer une surface sale en mouvement (4) dans une machine de l'industrie graphique, comprenant un élément presseur (6) pouvant être actionné par voie pneumatique, au moyen duquel un segment (18) de toile de nettoyage s'étendant par-dessus cet élément presseur (6) et mobile par rapport à l'élément presseur peut tour à tour être appliqué contre la surface sale (4) ou en être éloigné, comprenant également une chambre de compression (8) entre un support (7) et l'élément presseur (6) mobile par rapport au support (7), un circuit d'amenée d'air comprimé (20) pour relier une source de pression (26) à la chambre de compression (8), un groupe de soupapes (22, 24) pouvant être actionné par un dispositif de commande (34) pour relier la chambre de compression (8) soit à la source d'air comprimé (26) par le biais du circuit d'amenée d'air comprimé (20), soit à un dispositif de décompression (28), caractérisé en ce que le circuit d'amenée d'air comprimé (20) renferme un régulateur de pression (32) qui est réglé sur une pression inférieure à la pression délivrée par la source de pression (26), mais nettement supérieure à la pression de consigne dans la chambre de compression (8), régulateur par lequel l'élément presseur (6) place et applique la toile de nettoyage (10) contre la surface à nettoyer (4), et en ce qu'est prévu un dispositif de limitation de la pression (30, 31) réagissant à la pression pneumatique réelle régnant effectivement dans la chambre de compression (8), et ce, de telle manière que la pression plus élevée du régulateur de pression puisse régner rapidement dans la chambre de compression (8) et que l'élément presseur (6) soutenant le segment de toile (18) puisse être rapidement appliqué contre la surface à nettoyer (4), mais que la pression dans la chambre de compression (8) soit limitée à la valeur de consigne.
  2. Dispositif de nettoyage selon la revendication 1, caractérisé en ce qu'un interrupteur manométrique (31), en tant que mesure de limitation de la pression, est relié à la chambre de compression (8), qui est couplé de manière commandable au groupe de soupapes (22, 24) et qui commute toujours le groupe de soupapes gérant l'admission d'air comprimé dans la chambre de compression (8) de la position ouverte à la position fermée lorsqu'une valeur définie au niveau de l'interrupteur manométrique est atteinte, calculée de telle façon que la valeur de consigne soit atteinte dans la chambre de compression (8).
  3. Dispositif de nettoyage selon la revendication 2, caractérisé en ce que l'interrupteur manométrique (31) est relié à la chambre de compression (8) par le biais du circuit d'amenée d'air comprimé (20), sachant que l'interrupteur manométrique (31) est raccordé au circuit d'amenée d'air comprimé (20) entre le groupe de soupapes (22, 24) et la chambre de compression (8).
  4. Dispositif de nettoyage selon la revendication 3, caractérisé en ce que l'interrupteur manométrique (31) est relié directement à la chambre de compression (8).
  5. Dispositif de nettoyage selon l'une des revendications 2 à 4, caractérisé en ce qu'une soupape d'échappement rapide (44) est reliée à la chambre de compression (8) en tant que mesure de limitation de la pression.
  6. Dispositif de nettoyage selon la revendication 5, caractérisé en ce que la soupape d'échappement rapide (44) est reliée à la chambre de compression (8) par le biais du circuit d'amenée d'air comprimé (20), la soupape d'échappement rapide (44) étant raccordée au circuit d'amenée d'air comprimé (20) entre le groupe de soupapes (22, 24) et la chambre de compression (8).
  7. Dispositif de nettoyage selon la revendication 5, caractérisé en ce que la soupape d'échappement rapide (44) est directement reliée à la chambre de compression (8).
  8. Dispositif de nettoyage selon l'une des revendications 2 à 7, caractérisé en ce que le groupe de soupapes (22, 24) présente une soupape d'admission (22) située dans le circuit d'amenée d'air comprimé (20), qui est ouverte pour amener de l'air comprimé dans la chambre de compression (8) et que l'interrupteur manométrique (31) ferme en fonction de la pression de manière à ce que la pression de consigne soit atteinte dans la chambre de compression (8), et en ce que le groupe de soupapes (22, 24) présente une soupape d'échappement (24) dont l'entrée (46) est raccordée à la chambre de compression (8) et dont la sortie (28) communique avec l'extérieur.
  9. Dispositif de nettoyage selon la revendication 8, caractérisé en ce que l'entrée (46) de la soupape d'échappement (24) communique avec un segment (20-3) du circuit d'amenée d'air comprimé (20) qui relie la soupape d'admission (22) à la chambre de compression (8).
  10. Dispositif de nettoyage selon la revendication 9, caractérisé en ce que l'entrée (46) de la soupape d'échappement (24) est reliée directement à la chambre de compression (8).
  11. Dispositif de nettoyage selon la revendication 9, caractérisé en ce que l'entrée (46) de la soupape d'échappement (24) est raccordée au circuit d'amenée d'air comprimé (20) en un point du circuit d'amenée d'air comprimé (20) situé entre la soupape d'admission (22) et la soupape d'échappement rapide (44).
  12. Dispositif de nettoyage selon l'une des revendications 5 à 11, caractérisé en ce que la soupape d'échappement rapide (44) est un type de soupape qui, en cas de chute de la pression qu'elle surveille, chasse automatiquement l'air comprimé dans l'environnement.
  13. Dispositif de nettoyage selon la revendication 1, caractérisé en ce qu'une soupape de surpression (30) limitant la pression de l'air comprimé à la valeur de consigne est reliée à la chambre de compression (8).
EP00107021A 1999-05-03 2000-03-31 Dispositif de nettoyage pour l'industrie graphique Expired - Lifetime EP1060888B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19920231A DE19920231A1 (de) 1999-05-03 1999-05-03 Reinigungsvorrichtung für die graphische Industrie
DE19920231 1999-05-03
DE19926926 1999-06-14

Publications (2)

Publication Number Publication Date
EP1060888A1 EP1060888A1 (fr) 2000-12-20
EP1060888B1 true EP1060888B1 (fr) 2003-05-21

Family

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Family Applications (1)

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EP00107021A Expired - Lifetime EP1060888B1 (fr) 1999-05-03 2000-03-31 Dispositif de nettoyage pour l'industrie graphique

Country Status (2)

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EP (1) EP1060888B1 (fr)
DE (3) DE19920231A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050480B3 (de) * 2005-10-21 2007-01-18 Voith Turbo Gmbh & Co. Kg Steuerluftsystem und Verfahren zum Steuern des Steuerluftdruckes in einem solchen System
DE102022111889B3 (de) 2022-05-12 2023-07-20 Norgren Gmbh Steuerluftsystem für einen hydrodynamischen Retarder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344361A (en) * 1979-04-19 1982-08-17 Baldwin-Gegenheimer Corporation Automatic blanket cylinder cleaner
DE4142422A1 (de) * 1991-12-20 1993-06-24 Baldwin Gegenheimer Gmbh Vorrichtung zum reinigen von zylindern einer rotationsdruckmaschine
DE19516422C2 (de) * 1995-05-04 1998-12-24 Bernd Dr Brenner Druckmaschine mit einer für einen Zylinder vorgesehenen Reinigungseinrichtung
US5842418A (en) * 1995-05-08 1998-12-01 Seratek Llc Apparatus and method for cleaning a roller
US5611281A (en) * 1995-05-08 1997-03-18 Serater Llc System for cleaning particles from a surface
DE19605957A1 (de) * 1996-02-17 1997-08-21 Heidelberger Druckmasch Ag Vorrichtung zum Reinigen der Mantelfläche von Zylindern in Rotationsdruckmaschinen

Also Published As

Publication number Publication date
DE20006040U1 (de) 2000-06-15
DE19920231A1 (de) 2000-11-09
DE50002238D1 (de) 2003-06-26
EP1060888A1 (fr) 2000-12-20

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