EP0142661B1 - Dipositif 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

Dipositif 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
EP0142661B1
EP0142661B1 EP19840110950 EP84110950A EP0142661B1 EP 0142661 B1 EP0142661 B1 EP 0142661B1 EP 19840110950 EP19840110950 EP 19840110950 EP 84110950 A EP84110950 A EP 84110950A EP 0142661 B1 EP0142661 B1 EP 0142661B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
screw
housing
printing
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
EP19840110950
Other languages
German (de)
English (en)
Other versions
EP0142661A1 (fr
Inventor
Herbert Lübke
Winfried Stascheit
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
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0142661A1 publication Critical patent/EP0142661A1/fr
Application granted granted Critical
Publication of EP0142661B1 publication Critical patent/EP0142661B1/fr
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

Definitions

  • the invention relates to a device for turning the pressure on and off and for carrying out a long-stroke movement necessary for the cylinder change of a pressure acting on the forme cylinder of a rotogravure printing machine, the two pin bearings, each with a piston rod that serves to raise and lower the impression, double-acting pressure medium piston. Cylinder units are connected.
  • the object of the invention is therefore to provide a structurally simplified and easy-to-operate functionally reliable device of the type specified at the outset.
  • this object is achieved in that the piston rods led out of the cylinders are rotatably, but axially immovable, mounted in the journal bearings and that on the opposite sides of the piston rods, screws are screwed into the threaded pistons, which have thread-free parts on which Worm gears mounted on the housing and meshing with drivable worms cannot be rotated, but are axially displaceable to a limited extent, which corresponds to the stroke between the pressure on and the pressure off.
  • the impression roller can be moved between the pressure and pressure shutdown and vice versa simply by having the corresponding side of the piston. Pressure medium, usually compressed air, is applied and the other side is ventilated.
  • the long stroke movement of the impression roller for example to change the forme cylinder, can be brought about by switching on the motor driving the screws with the appropriate direction of rotation via a special switch.
  • the motor driving the screws can be switched on again in the opposite direction of rotation until the impression roller sits down on the forme cylinder and is pressed against it with the pressure medium pressure. In this position, the worm drive is stopped, so that the impression roller can only be moved between the pressure and pressure stops via the piston by applying pressure medium to the corresponding piston side.
  • the spindle is expediently supported on the end faces of the hub of the worm wheel in order to limit the axial play, which corresponds to the piston stroke between the pressure start and pressure shutdown, via stops which are formed on the one hand by a collar and on the other hand by a clamping ring.
  • the stop can be a short distance above the upper end face of the hub of the worm wheel, so that the impression roller is pressed against the forme cylinder with the pressure medium set.
  • the spindle is mounted in its rear region in a bush which is connected to a radial arm which is guided in an elongated hole in the housing and which interacts with a switch of the motor driving the worm.
  • This switch is used to switch off the screw drive when the impression roller has placed itself against the forme cylinder.
  • the switching point of the switch which preferably consists of a microswitch, can be selected such that the switching takes place when the stop of the spindle on the side of the worm wheel opposite the cylinder lifts off the worm wheel hub. If pressure is applied to the upper cylinder chamber, the play between the upper stop and the worm wheel hub is initially eliminated when the spindle moves.
  • the piston cannot carry out any further downward movement, so that with a further spindle rotation the stop lifts off the upper end face of the worm wheel hub and the impression roller with the full pressure medium pressure against the Forme cylinder is pressed.
  • the slight lifting movement of the stop is used to switch off the motor that drives the screws.
  • the spindle is provided with a collar in the area of the housing, under which engages a spring-loaded locking bolt which is displaceably guided radially to the spindle and which is connected to a piston which unlocks it when the piston is in the pressure chamber cylinder is pressurized with pressure medium.
  • This locking bar prevents the impression roller from falling out of the pressure stop onto the forme cylinder if the pressure medium pressure should be lost.
  • worm wheels are wedged onto the piston rods in the region of the journal bearings, which mesh with the screws that serve for fine adjustment.
  • the desired fine adjustment can be made using handwheels.
  • the two side frames 1 of an intaglio printing machine are firmly connected to one another via a cross member 2.
  • Two pneumatic piston-cylinder units 3 are articulatedly suspended on the traverse 2 and are connected to one another via articulated shafts 4 and 5 mounted in the frame.
  • the propeller shaft 5 is divided into two parts, one end of the two-part propeller shaft 5 being flanged to the geared motor 13.
  • the piston rods 6 of the piston-cylinder units 3 each carry a bearing 7, which is connected to a block bearing 9 guided on rods 8.
  • the latter are used to support the impression roller 10, which is placed on the forme cylinder 11 via the piston-cylinder units 3 for the purpose of printing, is lifted from the forme cylinder 11 by a small amount when the machine is briefly at a standstill, and is lifted by a larger amount when the forme cylinder is changed.
  • the piston-cylinder units 3 have a special structure, which can be seen from FIG. 3.
  • the end of the piston rod 6 protruding from the cylinder tube 12 has an extension 14 which is screwed to the bearing 7 via roller bearings in such a way that it is held axially immovably in the latter, but can rotate in the bearing 7.
  • the extension piece 14 carries a worm wheel 15, which meshes with a manually adjustable worm 16.
  • One end of the cylinder tube 12 is closed by a cover 17 which has an air inlet or outlet opening 18.
  • a screw nut 20, which is secured against rotation and has an internal thread 21, is screwed to the piston 19 connected to the piston rod 6. This internal thread 21 meshes with an external thread 22 which is cut on a rod 23 which is held on the one hand in the hollow piston rod 6 via bearing 24.
  • a housing 25 which has a continuous stepped bore 26.
  • the extension 27 of the rod 23 is rotatable and axially displaceable by a small amount.
  • a locking lug 28 in the form of an annular collar adjoins the external thread 22, behind which a bolt 29 bears in the position shown, namely under the force of the spring 30.
  • This spring 30 is supported from their side facing away from the bolt 29 on the inside of a cover 31. which is firmly connected to the housing 25, for example via screws 32.
  • the bolt 29 has an upper collar 33 which, in the position shown, closes an air bore 34 provided in the housing 25.
  • This L uftbohrung 34 opens into a larger Luftzu Georgia Glassbohrung 35, on the one hand is connected to an unillustrated pressurized air source in communication and ends on the other front of the cylindrical portion of the latch 29th
  • a worm wheel 36 is placed on the extension 27, which is secured against rotation by means of a spring 37, but allows axial movement between the worm wheel 36 and the extension 27.
  • the worm wheel 36 is driven by the propeller shaft 5 driven by the geared motor 13.
  • a clamping ring 38 is firmly attached to the extension 27, namely at a distance A from the worm wheel 36 and thus the rod 23 are shifted to the right relative to the worm wheel 36.
  • the end of the extension 27 facing away from the rod 23 carries a bushing 39 which is connected to the extension 27 via ball bearings 40.
  • a switching cam 41 is screwed tightly to the bushing 39 and can be moved to the left or to the right by a small amount in a longitudinal slot 42 provided in the housing 25.
  • the end of the switching cam 41 facing away from the bush 39 has a ramp surface 43 which rises towards the right and against which the switching lever 44 of a microswitch 45 bears.
  • the part of the bush 39 diametrically opposite the switching cam 41 has straight teeth 46, in which the gear 47 engages, which is firmly connected to one end of the propeller shaft 4.
  • a fine adjustment must now be made by hand. This is done by a hand wheel, not shown, with which the worm wheel 15 and thus also the worm 16 can be rotated.
  • the rotation of the worm 16 also causes the piston rod 6 and thereby also the threaded nut 20, which engages with the internal thread 21 in the external thread 22 of the rod 23. Since the rod 23 is secured against rotation by the holding cam 41, the piston 19 consequently moves in the cylinder tube 12, as a result of which the impression cylinder 10 can be adjusted in height for the purpose of fine adjustment depending on the material to be printed.
  • the geared motor 13 is switched on with a direction of rotation by a switch (not shown) so that the spindles lift the impression roller with the desired long-stroke movement.
  • a switch not shown
  • at least the upper cylinder chamber can be ventilated so that the piston does not have to be drawn in against the pressure medium pressure.
  • the upper end position of the long-stroke movement can be determined by a limit switch, not shown, which switches off the geared motor 13.
  • the gear motor 13 is switched on again by a switch (not shown) with a direction of rotation that the impression roller is lowered.
  • the lower cylinder chamber is vented, so that the stop formed by the clamping ring 38 bears against the hub of the worm wheel 36 without play.
  • the clamping ring 38 lifts off the worm wheel hub when the spindle 23 rotates further, and this axial movement of the spindle relative to the housing 55 is used to actuate the switching lever 44 of the microswitch 45 via the contact surface 43 of the switching cam .
  • the microswitch 45 switches off the geared motor 13 and normal printing operation can be started.
  • the impression roller By applying compressed air to the lower cylinder chamber, the impression roller is then moved to the pressure stop.
  • the lower cylinder chamber is ventilated and the upper cylinder chamber 50 is pressurized with compressed air, for example with a pressure of 3 bar.
  • the locking bolt (29) is chamfered on its side facing the piston (19) so that it can be run over by the collar (28) on the way to the print stop.

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

Claims (9)

1. Dispositif pour la mise en pression et hors de pression d'un cylindre d'impression (19) 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, cylindre d'impression dont les deux paliers à pivots sont raccordés chacun à une tige de piston (6) d'unités piston/cylindre (3) commandées par fluide et à double action servant à relever et à baisser le cylindre d'impression (10) caractérisé en ce que les tiges de piston (6) sortant des cylindres (12) sont logées dans les paliers à pivots (7) de manière à pouvoir pivoter sans pouvoir se mouvoir en sens axial et que sur les côtés opposés des tiges de piston (6) sont vissées des broches (23) dans les pistons (19) pourvus de filets (21). les broches comportant des parties non filetées sur lesquelles sont montées des roues hélicoïdales (36) non pivotantes et solidaires du bâti, qui s'engrènent dans des vis sans fin (4) entraînables et qui peuvent être déplacées de manière limitée dans le sens axial sur une distance qui correspond à la course entre la mise en pression et la mise hors de pression.
2. Dispositif selon la revendication 1 caractérisé en ce que chacune des roues hélicoïdales (36) est logée dans un boîtier (25) qui est raccordé de manière fixe au cylindre (12) et est étanche par rapport à la broche (23) qui y est introduite.
3. Dispositif selon la revendication 1 ou 2 caractérisé en ce que la broche (23) s'appuie sur la face avant du moyeu de la roue hélicoïdale (36) pour limiter le jeu axial (A) par des butées qui sont formées d'une part par une collerette (51) et d'autre part par un anneau de serrage (38).
4. Dispositif selon l'une des revendications 1 à 3 caractérisé en ce que la broche (23) dans sa partie arrière est logée dans un coussinet (39) qui est raccordé à un bras radial (41) qui est guidé à travers un trou oblong (42) du boîtier (25) et qui coopère avec un interrupteur (44, 45) du moteur entraînant la vis (4).
5. Dispositif selon l'une des revendications précédentes caractérisé en ce que la came d'interruption formée par le bras radial (41) déclenche le moteur lorsque la butée (38) de la broche (36) se trouvant sur le côté de la roue hélicoïdale (32) opposée au cylindre se désengage du moyeu de la roue à denture hélicoïdale.
6. Dispositif selon l'une des revendications précédentes caractérisé en ce que les coussinets (39) sont pourvus de dentures droites (46) qui s'engrènent dans des pignons (47) fixés sur un arbre de synchronisation (4).
7. Dispositif selon l'une des revendications précédentes caractérisé en ce que la broche (23) est pourvue au niveau du boîtier (25) d'une collerette dans laquelle s'engage une barre de verrouillage (29) à ressort qui est guidée de manière mobile dans le boîtier (25) dans le sens radial par rapport à la broche (23), barre de verrouillage qui est raccordée à un piston (33) qui la déverrouille lorsque la chambre de cylindre (50) poussant le piston (19) en position de mise en pression est soumise à la pression du fluide.
8. Dispositif selon l'une des revendications précédentes caractérisé en ce que la barre de verrouillage (29) est biseautée sur son côté regardant le piston (19) de manière à ce que la collerette (28) sur son chemin vers la mise hors de pression peut passer sur la barre de verrouillage.
9. Dispositif selon l'une des revendications précédentes caractérisé en ce que des roues hélicoïdales (15) sont fixées sur les tiges de piston (6) dans la partie des paliers à pivots (7) qui coopèrent avec les vis sans fin (16) servant au réglage de précision.
EP19840110950 1983-10-13 1984-09-13 Dipositif 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 EP0142661B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833337309 DE3337309C2 (de) 1983-10-13 1983-10-13 Vorrichtung zum Druckan- und abstellen eines auf einen Formzylinder wirkenden Gegendruckzylinders einer Rollen-Rotationsdruckmaschine
DE3337309 1983-10-13

Publications (2)

Publication Number Publication Date
EP0142661A1 EP0142661A1 (fr) 1985-05-29
EP0142661B1 true EP0142661B1 (fr) 1987-05-06

Family

ID=6211772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840110950 Expired EP0142661B1 (fr) 1983-10-13 1984-09-13 Dipositif 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 (3)

Country Link
EP (1) EP0142661B1 (fr)
JP (1) JPS6083842A (fr)
DE (1) DE3337309C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915481A1 (de) * 1989-05-11 1990-12-13 Windmoeller & Hoelscher Vorrichtung zum anstellen und abheben eines auf einen formzylinder wirkenden gegendruckzylinders
IT1294401B1 (it) * 1997-03-11 1999-03-24 Maf Spa Dispositivo di comando per lo spostamento controllato di piu' elementi sequenziali mobili lungo percorsi rettilinei paralleli
DE19746108C2 (de) * 1997-10-17 2002-12-19 Roland Man Druckmasch Antriebsanordnung für Druckzylinder einer Rotationsdruckmaschine
DE102008063956A1 (de) * 2008-12-19 2010-07-08 Eastman Kodak Co. Vorrichtung und Verfahren zum Einstellen einer Position einer Führungs und/oder Transportrolle für Bedruckstoffe in Druckmaschinen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211658B (de) * 1962-05-14 1966-03-03 Publication Corp Einrichtung an Rotations-Tiefdruckmaschinen zum Einstellen ihrer Zwischenwalze
DE1235333B (de) * 1964-01-29 1967-03-02 Windmoeller & Hoelscher Anilin-Druckmaschine
DE2609513C3 (de) * 1976-03-08 1979-03-29 Windmoeller & Hoelscher, 4540 Lengerich Vorrichtung zum An- und Abstellen eines auf den Formzylinder einer Tiefdruckmaschine wirkenden Presseurs Windmoller & Hölscher, 4540 Len¬
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
DE3046989C2 (de) * 1980-12-12 1987-11-12 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Druckan- und Druckabstellen und zum Ausführen einer für den Zylinderwechsel notwendigen Weithubbewegung eines auf den Formzylinder einer Tiefdruckrotationsmaschine wirkenden Presseurs

Also Published As

Publication number Publication date
JPS6083842A (ja) 1985-05-13
DE3337309A1 (de) 1985-05-02
DE3337309C2 (de) 1986-10-02
EP0142661A1 (fr) 1985-05-29

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