EP0563699B1 - Cylindre porte-plaque muni d'une barre de tension rêglable - Google Patents

Cylindre porte-plaque muni d'une barre de tension rêglable Download PDF

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Publication number
EP0563699B1
EP0563699B1 EP93104513A EP93104513A EP0563699B1 EP 0563699 B1 EP0563699 B1 EP 0563699B1 EP 93104513 A EP93104513 A EP 93104513A EP 93104513 A EP93104513 A EP 93104513A EP 0563699 B1 EP0563699 B1 EP 0563699B1
Authority
EP
European Patent Office
Prior art keywords
plate cylinder
tensioning bar
plate
cylinder according
tensioning rail
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
EP93104513A
Other languages
German (de)
English (en)
Other versions
EP0563699A1 (fr
Inventor
Claus Simeth
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 EP0563699A1 publication Critical patent/EP0563699A1/fr
Application granted granted Critical
Publication of EP0563699B1 publication Critical patent/EP0563699B1/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
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1231—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

  • the invention relates to a plate cylinder of a printing press with at least one tensioning rail arranged in a pit of the plate cylinder according to the preamble of claim 1.
  • a plate cylinder with these features is described, for example, in German Offenlegungsschrift 3 843 395.
  • a so-called flat track guide is provided for the adjustment of the tensioning rail, in which the flat underside of the tensioning rail can be adjusted on the flat top of a guide.
  • These known flat web guides cannot be mastered particularly well in the forces that occur. For example, the tensioning rail can tip if large forces act on it. It is also problematic to adjust the tensioning rail in all directions of the plane mentioned, because in the prior art there is often only one adjustment possibility in the circumferential direction (tensioning direction). Adjustment in this direction in some embodiments of known fastening devices of this type necessitates readjustment in the direction perpendicular thereto (axial direction), i.e. the adjustments in these two mutually perpendicular directions are not completely independent of one another.
  • the invention avoids these disadvantages. It is based on the task of proposing a fastening of a tensioning rail on a plate cylinder, which enables the tensioning rail to move freely in the entire adjustment plane.
  • the tensioning rail should be stored very precisely and stably and still be able to be shifted to the desired extent in the plane mentioned so that it can be positioned precisely.
  • the tensioning rail is supported on the adjustment plane by at least two spaced apart axial bearings, consisting of rolling elements arranged in an annular cage.
  • the rolling elements can be formed either by balls or by rollers, wherein rollers arranged in an annular cage are also referred to as roller rings.
  • the mounting or mounting of the tensioning rail takes place via at least two structural units, each with two axial bearings, which would then have to be referred to as a roller and cage assembly when using roller and cage assemblies.
  • roller crown assemblies allow the tensioning rail to move freely in the adjustment plane, in all directions thereof.
  • the fastening of the roller ring assemblies to the cylinder must be designed so that the roller ring assemblies can follow all movements in this plane.
  • Each assembly therefore preferably has a fastening plate which can be fastened to the cylinder and which has a hole with a diameter which is larger than a fastening screw which extends through the hole and which is screwed into the tensioning rail, the fastening screw being connected to the working parts of the assembly, ie to those parts which are displaced relative to the cylinder.
  • each roller ring assembly has an upper and a lower roller ring, between which the fastening plate mentioned is arranged. These units are then covered by an upper and a lower cover plate.
  • two outer and one central eccentric act on the plate cylinder, by means of which the tensioning rail can be adjusted in the adjustment plane.
  • the tensioning rail is adjusted in the circumferential direction via the two outer eccentrics, ie for tensioning or releasing a pressure plate attached to the tensioning rail in question and with the aid of the central eccentric, the tensioning rail can be adjusted in the axial direction. Based on geometrical considerations, it follows that the adjustments of all three eccentrics depend on one another, because they are coupled to one another by the rigid tensioning rail.
  • a longitudinal groove and a transverse groove are formed on the underside of the tensioning rail, into which sliding blocks are inserted, into which the actuating ends of the eccentrics engage.
  • the grooves should be provided approximately in the middle on the underside of the tensioning rail. The other ends of the eccentrics are fixed to the cylinder.
  • the eccentrics can be adjusted by motor or by hand. In the case of a motorized adjustment, this should take place via a suitable control so that the operator of the machine can determine the actual positions of the eccentrics and thus also the tensioning rail at any time and can enter desired target positions in the control. Of course, this can also be provided by manually adjusting the eccentric.
  • the fastening according to the invention can also be provided only on a single tensioning rail of a pressure cylinder; insofar as it is only important that the other end of the pressure plate, at which end therefore does not attack the tensioning rail designed according to the invention, is held in a suitable manner, for example via spring-loaded pins which engage in holes made in the pressure plate there, via a conventional tensioning rail and right away.
  • tensioning rails designed according to the invention can also be attached to both ends of the pressure plate.
  • a plate cylinder 1 with its cylinder pit 2 is indicated.
  • a tensioning rail 3 is fastened in this.
  • Fig. 1 also shows that a pressure plate 4 is attached to the tensioning rail, the beginning of printing is indicated at item 5.
  • the tensioning rail 3 is fastened to the plate cylinder 1 by means of roller ring assemblies. These consist of a middle fastening plate 6 and an upper and a lower cover plate 7, 8. Between the fastening plate and the respective cover plate, a roller ring 9 is arranged in each case. 2 shows in particular that the roller and cage assemblies essentially consist of rolling elements 10 which are arranged in a cage on a circular ring.
  • a fastening screw 11 is inserted through central through holes 12 in the cover plates 7, 8 and also through an elongated hole 13 in the fastening plate 6.
  • the elongated hole is not only longer in its longitudinal direction than the shaft of the screw 11, but also transversely thereto, so that the mounting plate 6 can move in all directions relative to the screw 11.
  • screws 14 are also provided, with the help of which the mounting plate and with it the entire roller and crown assembly is attached to the plate cylinder 1.
  • the screw 11 is also screwed into a threaded hole 15 in the clamping rail 3.
  • Fig. 3 shows a schematic plan view of the tensioning rail, the center of the printing machine being indicated at item 18.
  • a longitudinal groove 19 is provided approximately in the center (cf. also FIG. 4) and also a transverse groove 20 running approximately in the center.
  • the fastening plates 6 of the two roller and cage assemblies with their roller rings 9 are also indicated.
  • Sliding blocks 22 are inserted into the grooves 19, 20. These are characterized by the smoothest possible surfaces and they are fitted into the grooves without play.
  • the sliding blocks have center bores 23 into which pins 24 of eccentrics 25 engage.
  • the pins 24 are arranged eccentrically to the cylinder parts 26 of the eccentric.
  • the eccentricity is indicated in Fig. 4 at item 27. It results from the distance of the center b of the gear 29 from the axis a of the pin 24. See also FIG. 3.
  • the relevant sliding block 22 is therefore displaced in its groove 19 or 20. This allows the tensioning rail in its adjustment plane II-II, ie in the direction of the two arrows 16, 17 and in all directions including an angle to it be adjusted.
  • Fig. 4 is also indicated that the eccentric 25 can be adjusted via a motor 28 with gear 29.
  • Fig. 3 the structurally determined distance 30 between the start of pressure 5 and the starting position 31 (rest position) of the tensioning rail is shown. Starting from this target position, the respective actual position of the tensioning rail can be calculated and set.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (7)

  1. Cylindre porte-plaque (1) d'une machine d'impression, comportant au moins une barre de tension agencée dans le canal du cylindre porte-plaque, laquelle est montée de façon mobile dans un plan de réglage parallèle au plan tangentiel du cylindre porte-plaque,
    caractérisé en ce que la barre de tension (3) est supportée sur le plan de réglage (II-II) par l'intermédiaire d'au moins deux corps de roulement (10) d'un palier axial, réunis dans une cage et agencés de façon écartée en direction longitudinale de la barre de tension (3).
  2. Cylindre porte-plaque selon la revendication 1,
    caractérisé en ce que, pour l'appui de la barre de tension (3), il est prévu, à chaque fois, une unité constructive (21) qui est constituée d'une plaque de fixation (6) se trouvant dans le plan de réglage (II-II) et agencée sur le cylindre porte-plaque (1), sur laquelle, des deux côtés, reposent les corps de roulement (10) de chaque palier axial et, à chaque fois, un disque de recouvrement supérieur (7) et un disque de recouvrement inférieur (8) sont associés à ceux-ci.
  3. Cylindre porte-plaque selon la revendication 2,
    caractérisé en ce qu'il est prévu une vis de fixation (11) qui traverse des trous de passage (12) dans les deux disques de recouvrement (7,8), ainsi qu'un trou (13) dans la plaque de fixation (6) avec un jeu de tous les côtés, et qui est vissée dans la barre de tension (3).
  4. Cylindre porte-plaque selon la revendication 1, 2 ou 3,
    caractérisé en ce que les corps de roulement (10) des paliers axiaux, réunis dans une cage annulaire, sont formés, à chaque fois, par une couronne de rouleaux (9) ayant des rouleaux correspondants.
  5. Cylindre porte-plaque selon une des revendications 1 à 4,
    caractérisé en ce que, sur le cylindre porte-plaque (1), s'engagent deux excentriques externes et un excentrique central (25), grâce auxquels la barre de tension (3) peut être réglée dans le plan de réglage (II-II).
  6. Cylindre porte-plaque selon la revendication 5,
    caractérisé en ce que, sur le dessous de la barre de tension (3), sont prévues une gorge longitudinale (19) ainsi qu'une gorge transversale (20) dans lesquelles sont montés des coulisseaux (22) dans lesquels s'engagent les extrémités d'actionnement (tourillons) (24) des excentriques.
  7. Cylindre porte-plaque selon la revendication 5 ou 6,
    caractérisé en ce que les excentriques (25) peuvent être réglés de façon motorisée (moteur 28) ou manuellement.
EP93104513A 1992-04-02 1993-03-19 Cylindre porte-plaque muni d'une barre de tension rêglable Expired - Lifetime EP0563699B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4210897A DE4210897C1 (fr) 1992-04-02 1992-04-02
DE4210897 1992-04-02

Publications (2)

Publication Number Publication Date
EP0563699A1 EP0563699A1 (fr) 1993-10-06
EP0563699B1 true EP0563699B1 (fr) 1996-06-19

Family

ID=6455757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104513A Expired - Lifetime EP0563699B1 (fr) 1992-04-02 1993-03-19 Cylindre porte-plaque muni d'une barre de tension rêglable

Country Status (5)

Country Link
US (2) US5284092A (fr)
EP (1) EP0563699B1 (fr)
JP (1) JP2524071B2 (fr)
AT (1) ATE139482T1 (fr)
DE (2) DE4210897C1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210897C1 (fr) * 1992-04-02 1993-08-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4306237A1 (de) * 1993-02-27 1994-09-01 Heidelberger Druckmasch Ag Einrichtung zur Einstellung des Schrägregisters in einer Spanneinrichtung zum Einspannen von Druckplatten in einer Offsetdruckmaschine
WO1995028261A1 (fr) * 1994-04-13 1995-10-26 Winkler & Dünnebier Emporte-piece souple et cylindre-support
DE19707063C1 (de) * 1997-02-22 1998-07-30 Roland Man Druckmasch Verfahren zur Durchführung von Seitenregisterkorrekturen sowie entsprechende Vorrichtung
CZ297967B6 (cs) * 2000-08-25 2007-05-09 Heidelberger Druckmaschienen Ag Zarízení na prestavování minimálne jednoho prvku registru v tiskovém stroji a zpusob k provádení takového prestavování
DE10236865A1 (de) 2002-08-12 2004-02-26 Koenig & Bauer Ag Zylinder in einer Druckeinheit mit mindestens einem Kanal mit mindestens einer Haltevorrichtung
US7000522B2 (en) * 2003-12-08 2006-02-21 Eagle Rotary Systems, Inc. Rotary cutting tool with die plate position adjustment
US7121200B2 (en) * 2004-11-22 2006-10-17 Chi-Min Ho Roller parallelism adjustment structure
US9120301B2 (en) 2010-11-17 2015-09-01 Bunting Magnetics Co. Magnetic roll

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DE4210897C1 (fr) * 1992-04-02 1993-08-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De

Also Published As

Publication number Publication date
JPH0615798A (ja) 1994-01-25
DE59302970D1 (de) 1996-07-25
ATE139482T1 (de) 1996-07-15
EP0563699A1 (fr) 1993-10-06
US5284092A (en) 1994-02-08
DE4210897C1 (fr) 1993-08-12
USRE35647E (en) 1997-11-04
JP2524071B2 (ja) 1996-08-14

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