EP0054178B1 - Dispositif pour la mise en pression et hors de pression d'un cylindre d'impression coopérant avec le cylindre porte-gravure d'une rotative d'impression en creux ainsi que pour le soulèvement de grande amplitude nécessaire au changement des cylindres - Google Patents

Dispositif pour la mise en pression et hors de pression d'un cylindre d'impression coopérant avec le cylindre porte-gravure d'une rotative d'impression en creux ainsi que pour le soulèvement de grande amplitude nécessaire au changement des cylindres Download PDF

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Publication number
EP0054178B1
EP0054178B1 EP81109439A EP81109439A EP0054178B1 EP 0054178 B1 EP0054178 B1 EP 0054178B1 EP 81109439 A EP81109439 A EP 81109439A EP 81109439 A EP81109439 A EP 81109439A EP 0054178 B1 EP0054178 B1 EP 0054178B1
Authority
EP
European Patent Office
Prior art keywords
pressure
cylinder
movement
fluid
spring
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
Application number
EP81109439A
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German (de)
English (en)
Other versions
EP0054178A1 (fr
Inventor
Peter Klaus
Jürgen Westerkamp
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0054178A1 publication Critical patent/EP0054178A1/fr
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Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/40—Cylinder lifting or adjusting devices fluid-pressure operated

Definitions

  • the invention relates to a device for turning on and turning off the pressure and for carrying out a long-stroke movement necessary for the cylinder change of an impression cylinder acting on the forme cylinder of a rotogravure printing machine, the two pin bearings of which are connected to a double-acting pressure medium cylinder serving to raise and lower the impression cylinder and by means of a cylinder mounted synchronizing shaft, which is provided with pinions which mesh with rack-fixed racks, are coupled to one another.
  • a drag pin is fastened to one of the journal bearings and engages with at least one play corresponding to the pressure shut-off stroke in a groove of a sliding plate which is displaceable in the machine frame parallel to the journal bearings.
  • a switching valve is fastened to the sliding plate, the tappet of which can be actuated by the cam surface of a cam which is at most movable relative to the switching valve via the play and which is fastened to the journal bearing.
  • the switching valve is bridged, while during the pressure shut-off movement, pressure medium is supplied to the pressure medium cylinders via the switching valve in such a way that this blocks the pressure medium supply to the stroke chambers of the pressure medium cylinders at the end of the short-stroke pressure stop movement.
  • the pressure shut-off movement is ended when the switching valve blocks the flow of the pressure medium or when the switching valve has reached an equilibrium state between the weight of the impression cylinder, its bearings and the piston of the lifting cylinder.
  • the switching valve is unable to hold the impression cylinder in a precisely defined position at the end of the pressure shut-off movement, because it is pressurized with the full pressure medium and, in the event of pressure fluctuations and as a result of other interferences, leads to a slight uncontrollable pressure medium flow through the switching valve can come so that the impression roller does not stand still in its pressure cut-off, but dances up and down to the extent that the switching valve alternately releases or blocks the flow of the pressure medium.
  • This unstable pressure shutdown of the impression roller leads to different web tensions, which can impair perfect printing.
  • the impression roller is held in the pressure cut-off by the lifting cylinder acting on the pressure medium pressure, this position being determined by a deflection of the stationary synchronizing shaft, against which a radial of when the shaft rotates the synchronizing shaft strikes protruding cams, the rotationally fixed connection with the synchronizing shaft for carrying out the long stroke movement of the impression roller is hydraulically detachable.
  • the object of the invention is therefore to provide a device of the type specified at the outset, in which the impression roller moved into the print stop is blocked in its position until the initiation of the pressure adjustment movement.
  • this object is achieved in that the synchronizing shaft can be coupled to the journal bearings for its blocking by a spring-applied multi-plate brake and in that the spring-applied multi-plate brake is in its released position during the long-stroke movement and in the pressure-adjusting movement of the impression roller and at the end of the short-stroke pressure-reducing movement is operable for coupling.
  • the spring-applied multi-disk brake is expediently actuated by the pressure medium present in the system, but electrical signals can also be used to switch it.
  • the spring-applied multi-plate brake expediently consists of a multi-plate clutch, one half of which is attached to the journal bearing and the other half of which is attached to the synchronizing shaft.
  • the multi-plate clutch can be engaged by a spring loading the disk set and can be disengaged by a piston which counteracts the spring force and can be acted upon by a pressure medium.
  • the piston is expediently exposed to the pressure medium pressure of the pressure lines during the long stroke movement and the pressure setting movement of the impression cylinder.
  • the synchronizing shaft can then be freely rotated during these movements. However, if the pressure medium in the system fails, the impression roller is blocked in its respective position, so that a hard impact or an undesired constant contact of the impression roller on the forme cylinder are avoided.
  • a pressure medium-operated directional control valve which, when the directional control valve causing the short-stroke pressure shut-off movement is actuated, with a delay corresponding to the pressure shut-off stroke, blocks and relieves the pressure medium supply to the piston of the spring-applied multi-disk brake.
  • the pressure medium can be supplied to the directional control valve via a throttle with an adjustable throttle cross section.
  • An impression roller 1 is arranged between a printing roller 2 and a forme cylinder 3 of a printing press.
  • the impression roller 1 and the pressure roller 2 are supported at their ends in journal bearings 4, 5 which are arranged in guides 6 of the frame of the machine so as to be displaceable radially with respect to the forme cylinder 3.
  • the impression roller 1 has a bearing which is separate from the pressure roller 2 but is coupled to it and can be displaced per se and is pressed against the pressure roller 2 by the forme cylinder 3 during the pressure setting movement.
  • Each journal bearing 4, 5 is connected to the piston rod of pressure medium cylinders 8, 9 fixed to the frame. With the journal bearings 4, 5 also bearings 15, 16 of a synchronizing shaft 17 are connected, on the two sides of which pinions 18 are attached, which mesh with rack 19 fixed to the frame.
  • a guide roller 20 is loosely rotatably mounted on the shaft 17, over which the web 21 to be printed is guided. There is so much play between the pinions 18 and the toothed racks 19 that the impression roller 1 and the pressure roller 2 can also be slightly inclined to the forme cylinder 3 without this position being impeded by the synchronizing shaft 17. In Fig. 3 only one half of the pressure roller 2 is shown.
  • the inner part 24 of a spring-applied multi-disk brake 25 is fastened on the synchronizing shaft 17.
  • the outer part 26 of the spring-applied multi-disk brake 25 is firmly connected to the bearing 15.
  • a piston 28 is seated coaxially with the slats 27 and is pressed against the slats 27 by springs 29 and presses the slats 27 together.
  • Pressure line can be applied to the piston 28 through a line 44, so that the piston moves away from the fins 27 to the right.
  • the fins 27 are pressed together, so that a torque can be transmitted from the synchronizing shaft 17 to the bearings 15, 16, i. that is, the rotational movement of the shaft 17 and the lifting movement of the journal bearing 4 are inhibited.
  • the piston 28 is actuated by means of pressure medium, the movement of the impression roller 1 and the pressure roller 2 are released. If the weight of the rollers 1, 2 requires it, a further clutch 25 can also be arranged on the right side of the shaft 17, not shown.
  • FIGS. 4 to 7 The various switching positions of the valves in the individual operating states can be seen from the pneumatic diagrams FIGS. 4 to 7. Pressure from a pressure source 35 can be applied to the pressure medium cylinders 8, 9 via a valve 36, a line 37 and fine control valves 38, 39 as well as lines 40, 41, so that the pressure cylinders 1, 2 go into the “pressure” position. At the same time, the multi-plate clutch 25 is under pressure through line 42 and valve 43 and line 44, so that the rotational movement of the synchronizing shaft 17 is released.
  • Fig. 5 shows the "Druckab" position.
  • the lines 37, 40, 41 are depressurized.
  • the pressure medium standing over the pistons of the pressure medium cylinders 8, 9 can flow off via check valves 45, 46.
  • the lines 47 to 50 are now under pressure, so that the printing couple cylinders 1, 2 are far removed from the plate cylinder 3.
  • pressure at (Fig. 4) is set again, the pressure medium in front of the piston can flow out via the check valve 51.
  • a valve 52 If pressure from the short stroke is required, a valve 52 must be actuated. As a result, pressure medium flows via lines 53, 54 through an adjustable throttle 55 to a valve 56, which switches over with a delay in accordance with the slow inflow of pressure medium. The switchover time can be adjusted by regulating the throttle 55. In Fig. 6 the valve 56 is drawn before switching. Pressure line therefore still flows from line 47 through valve 56 via line 50 to valve 43. The position of valve 43 shown in FIG. 6 allows pressure medium to be in front of piston 28 of clutch 25, and this due to the pressure is kept open. After switching the valve 56, the line 50 is depressurized and the valve 43 goes to its other position to the left. As a result, the clutch 25 is depressurized and the springs 29 lock the synchronizing shaft 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Braking Arrangements (AREA)

Claims (7)

1. Dispositif pour l'enclenchement et le déclenchement de pression ainsi que pour effectuer de larges mouvements de course nécessaires au changement de cylindre d'un presseur agissant sur le cylindre gravé d'une rotative hélio, dont les deux paliers à pivot sont couplés au moyen de deux cylindres fonctionnant au fluide et ayant une double action servant à relever et à abaisser le presseur et par un arbre de synchronisation logé sur ces derniers qui est pourvu de pignons en prise avec des crémaillères solidaires du châssis, caractérisé par le fait que l'arbre de synchronisation (17) peut être couplé pour être bloqué au palier à pivot (4, 5) par au moins un frein à lamelles à pression de ressort (25) et que le frein à lamelles à pression de ressort (25) se trouve dans sa position détachée lors du large mouvement de course et du mouvement d'enclenchement de la pression du presseur (1) et qu'il peut être actionné pour effectuer l'accouplement à la fin du mouvement court de déclenchement de la pression.
2. Dispositif selon la revendication 1 caractérisé par le fait que le frein à lamelles à pression de ressort (25) peut être actionné par un fluide de pression ou par des signaux de commutation électriques.
3. Dispositif selon la revendication 1 ou la revendication 2 caractérisé par le fait que le frein à lamelles à pression de ressort se compose d'un embrayage à lamelles (25) dont une moitié est fixée au palier à pivot (4, 5) et l'autre moitié à l'arbre de synchronisation (17).
4. Dispositif selon l'une des revendications 1 à 3 caractérisé par le fait que le frein à lamelles à pression de ressort (25) peut être embrayé par le ressort (29) agissant sur le paquet de lamelles et peut être débrayé par un piston (28) pouvant être actionné par un fluide de pression et agissant dans le sens contraire à la force du ressort.
5. Dispositif selon la revendication 4 caractérisé par le fait que le large mouvement de course et le mouvement d'enclenchement de la pression du presseur (1) font agir la pression du fluide des conduites de pression (47, 48, 49) sur le piston (28).
6. Dispositif selon la revendication 4 ou la revendication 5 caractérisé par la présence d'un distributeur (56) actionné par fluide qui, lorsque le distributeur (52) qui provoque le mouvement de déclenchement de la pression à course courte est actionné, bloque l'acheminement du fluide au piston (28) du frein à lamelles à pression de ressort (25) avec un retard correspondant à la course de déclenchement de la pression et décharge le piston.
7. Dispositif selon la revendication 6 caractérisé par le fait que le fluide de pression peut être acheminé au distributeur (56) pour une commutation ralentie par l'intermédiaire d'un papillon (55) ayant une section de papillon réglable.
EP81109439A 1980-12-12 1981-10-30 Dispositif pour la mise en pression et hors de pression d'un cylindre d'impression coopérant avec le cylindre porte-gravure d'une rotative d'impression en creux ainsi que pour le soulèvement de grande amplitude nécessaire au changement des cylindres Expired EP0054178B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3046989A DE3046989C2 (de) 1980-12-12 1980-12-12 Vorrichtung zum Druckan- und Druckabstellen und zum Ausführen einer für den Zylinderwechsel notwendigen Weithubbewegung eines auf den Formzylinder einer Tiefdruckrotationsmaschine wirkenden Presseurs
DE3046989 1980-12-12

Publications (2)

Publication Number Publication Date
EP0054178A1 EP0054178A1 (fr) 1982-06-23
EP0054178B1 true EP0054178B1 (fr) 1984-08-15

Family

ID=6119067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109439A Expired EP0054178B1 (fr) 1980-12-12 1981-10-30 Dispositif pour la mise en pression et hors de pression d'un cylindre d'impression coopérant avec le cylindre porte-gravure d'une rotative d'impression en creux ainsi que pour le soulèvement de grande amplitude nécessaire au changement des cylindres

Country Status (4)

Country Link
US (1) US4381707A (fr)
EP (1) EP0054178B1 (fr)
DE (1) DE3046989C2 (fr)
SU (1) SU1120921A3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3337309C2 (de) * 1983-10-13 1986-10-02 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Druckan- und abstellen eines auf einen Formzylinder wirkenden Gegendruckzylinders einer Rollen-Rotationsdruckmaschine
DE3613968A1 (de) * 1986-04-24 1987-10-29 Heidelberger Druckmasch Ag Vorrichtung zum erzeugen einer einstellbaren kraft an druckmaschinen
DE4426753A1 (de) 1994-07-28 1996-02-01 Bayer Ag Mittel zur Bekämpfung von Pflanzenschädlingen
DE10113314C2 (de) 2001-03-20 2003-10-30 Koenig & Bauer Ag Fixiereinrichtung
DE10152020C2 (de) 2001-03-20 2003-05-08 Koenig & Bauer Ag Vorrichtung zum Einstellen des Anpressdrucks einer verstellbar gelagerten Walze
DE10234402B4 (de) * 2001-09-21 2015-10-08 Heidelberger Druckmaschinen Ag Unabhängiger Direktantrieb für Papier verarbeitende Druckmaschinen
WO2003049947A2 (fr) 2001-12-06 2003-06-19 Koenig & Bauer Aktiengesellschaft Procedes et dispositifs permettant de regler au moins un rouleau dans une machine a imprimer et/ou de le placer/retirer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099553B (de) * 1958-11-22 1961-02-16 Maschf Augsburg Nuernberg Ag Tiefdruckrotationsmaschine in Reihenbauart
DE1235333B (de) * 1964-01-29 1967-03-02 Windmoeller & Hoelscher Anilin-Druckmaschine
DE1611303C3 (de) * 1968-01-29 1975-01-16 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum An- und Abstellen der Gegendruckzylinder gegenüber dem Formzylinder an Tiefdruckrotationsmaschinen
US3793952A (en) * 1972-07-25 1974-02-26 Windmoeller & Hoelscher Convertible printing mechanism for intaglio and flexographic printing
US3894488A (en) * 1972-10-17 1975-07-15 American Bank Note Co Printing pressure control apparatus for intaglio press
US4046070A (en) * 1974-04-22 1977-09-06 James Halley & Sons Limited Rotary printing presses
DE2610028C3 (de) * 1976-03-10 1979-09-27 Windmoeller & Hoelscher, 4540 Lengerich Von Tiefdruck auf Flexodruck und umgekehrt umrüstbare Druckmaschine
DE2638750C3 (de) * 1976-08-27 1981-01-08 Windmoeller & Hoelscher, 4540 Lengerich Vorrichtung zum Druckan- und Druckabstellen und zum Ausführen einer für den Zylinderwechsel notwendigen Weithubbewegung eines auf den Formzylinder einer Tiefdruckrotationsmaschine wirkenden Presseurs
DE2822531A1 (de) * 1978-05-23 1979-11-29 Frankenthal Ag Albert Tiefdruckmaschine

Also Published As

Publication number Publication date
EP0054178A1 (fr) 1982-06-23
DE3046989A1 (de) 1982-07-22
US4381707A (en) 1983-05-03
DE3046989C2 (de) 1987-11-12
SU1120921A3 (ru) 1984-10-23

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