EP0203279B1 - Cylindre, de préférence cylindre de contre-pression d'un cylindre gravé dont la chemise peut être courbée - Google Patents

Cylindre, de préférence cylindre de contre-pression d'un cylindre gravé dont la chemise peut être courbée Download PDF

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Publication number
EP0203279B1
EP0203279B1 EP86102859A EP86102859A EP0203279B1 EP 0203279 B1 EP0203279 B1 EP 0203279B1 EP 86102859 A EP86102859 A EP 86102859A EP 86102859 A EP86102859 A EP 86102859A EP 0203279 B1 EP0203279 B1 EP 0203279B1
Authority
EP
European Patent Office
Prior art keywords
rings
roller
pressing bar
shaft
wedge surfaces
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
EP86102859A
Other languages
German (de)
English (en)
Other versions
EP0203279A2 (fr
EP0203279A3 (en
Inventor
Herbert Lübke
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 EP0203279A2 publication Critical patent/EP0203279A2/fr
Publication of EP0203279A3 publication Critical patent/EP0203279A3/de
Application granted granted Critical
Publication of EP0203279B1 publication Critical patent/EP0203279B1/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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/18—Impression cylinders

Definitions

  • the invention relates to a roller, preferably a counter-pressure roller of a rotogravure plate cylinder, with a roller jacket which is freely rotatable by means of a plurality of roller bearings arranged at a distance from one another via rings on a fixed axis, of which at least the middle ones are radially displaceable for bending or tensioning of the roller jacket.
  • the starting point of the invention is therefore the knowledge that a perfect print image generated by a rotogravure printing machine can be achieved if, in order to compensate for the pressure forces exerted by the rotogravure form cylinder, which tend to deflect or deform the impression roller, the impression roller is bent in the opposite direction accordingly, so that this bears under the pressure of the gravure forme cylinder on this with a rectilinear or correspondingly complementary curved surface line.
  • roller of the type specified is known, in which the roller shell is mounted on roller bearings on a hollow axis which can be deflected by eccentric tie rods arranged in the interior thereof.
  • roller shell is mounted on leaf spring assemblies which form rings and are supported on the axle and which can be braced in opposite directions for deflection.
  • a roller is known, the freely rotatable roller shell of which is supported on bearing elements with pockets which generate hydrostatic bearing on a rigid axis, the bearing elements being provided with cylinder bores into which piston-like pins connected to the axis engage , via which the cylinders and the pockets serving the hydrostatic bearing are supplied with pressure medium.
  • the bearing elements being provided with cylinder bores into which piston-like pins connected to the axis engage , via which the cylinders and the pockets serving the hydrostatic bearing are supplied with pressure medium.
  • the tilt-proof mounting of the roller shell associated with difficulties, the supply and discharge of the pressure medium to the bearing elements and their control by the pressure medium is also problematic.
  • US-A-4 421 283 shows a drum for rewinding metal strips.
  • the crown surface of the winding drum can be adjusted.
  • the drum has a central axis and a jacket surrounding it.
  • the jacket can be widened by means of a pressure rod guided in the axis in that inclined surfaces provided on this pressure rod run onto inclined surfaces on the jacket side.
  • This allows the drum shell to be changed in its scope.
  • this previously known drum shell does not have a continuously rotating surface. Rather, it is composed of several parts, some of which can be pivoted outwards.
  • a roller with the generic features is known as an spreader roller, for example from DE-A 2 102 818.
  • DE-A 2 127 853 which shows a roller with variable crowning, also includes the generic features.
  • the central axis is radially curved or bent, with its curvature gradually increasing towards the center.
  • several eccentric bushes are attached, the eccentricity of which also gradually increases towards the center of the central shaft.
  • These sleeves are rotatably inserted in sleeves, which in turn are enclosed by a rubber jacket.
  • the object of the invention is to provide a roller of the type specified at the outset, which, in the case of great bending rigidity, enables targeted bending or tensioning of the roller shell in a simple manner.
  • this object is achieved in that the rings bearing the roller bearings are mounted with play on the axle, the game being formed by a gap between the side of the axle opposite the push rod and the rings, that the axle is provided with an axially extending groove is in which a push rod is axially displaceably guided, which is provided in the region of the rings with wedge surfaces supported on the inner sides thereof, and in that a device is provided for axially displacing the push rod relative to the axis.
  • the roller according to the invention has an axis, which can consist of a solid profile, so that it matches the desired one Flexural rigidity can be established.
  • the roll shell can be deformed or braced with the desired bending line without the axis also having to be bent accordingly. Since the roller according to the invention is thus able to absorb considerable compressive stresses, it is particularly suitable as a counter-pressure roller for a gravure cylinder.
  • the rings in the area of the push rod are expediently provided with wedge surfaces which are bevelled in opposite directions to the wedge surfaces.
  • the rings can delimit a sickle-shaped gap in the area of their side opposite the push rod with the axis.
  • they can be fixed on the axle by these stop rings which surround on both sides.
  • the groove is expediently undercut in the form of a dovetail, the pressure rod having a corresponding trapezoidal cross-sectional profile, so that the pressure rod is also fixed in the groove and cannot deform with an undesirable bending line.
  • the slopes of the wedge surfaces of the pressure rod can increase from ring to ring to the middle of the roll.
  • two push rods are arranged in mirror image in the groove, which include a gap between them in the area of the roll means and rest with their end wedge surfaces on a common middle ring with oppositely beveled wedge surfaces.
  • each push rod can be firmly connected to a ring provided with an external thread, onto which a worm wheel provided with a corresponding internal thread is screwed, with which a worm mounted on the frame and provided with a handwheel meshes.
  • a worm wheel provided with a corresponding internal thread
  • a handwheel meshes
  • the axis 2 of the roller 1 is rotatably supported in the frame 3 of a rotogravure printing machine.
  • the journal 4 are provided with rings 5 with a spherical outer surface, which are held in rings 6 with a complementary inner surface, so that the axis 2 can bend without transferring corresponding bending moments to the machine frame.
  • the outer, the axles 4 holding rings 8 are supported on the machine frame 3 via pressure cells 9, so that the bearing reactions can be measured.
  • the axis 2 is provided with an axially extending groove 10, whose two flanks are undercut in a dovetail shape, as can be seen from FIG. 2.
  • two pressure rods 11, 12 are guided, which end at a distance from one another in the region of the center of the roll, that is to say include a gap 12 between them.
  • roller jacket 18 is mounted on the axis 2 via roller bearings 13, 14, 15, 16, 17. This consists of two superimposed concentric pipe sections.
  • the end bearings 13, 17 are mounted in the usual way via their inner rings directly on the axis 2, which is possible in that the push rods 11, 12 are completely sunk in the groove 10 in the area of these bearings.
  • the inner rings of the bearings 13, 17 are directly axially fixed on the axis 2.
  • the outer rings of the bearings 13, 17 are fixed in the rings 21, 22 with a conical outer surface. These rings are overlapped by rings 23, 24 with a correspondingly complementary conical inner surface, so that the inner casing tube 20 can be rotated by tightening the rings 21, 23 and 22, 24 by screw connections, not shown, but axially immovable via the roller bearings 13, 17 with the Axis 2 is connected.
  • the bearings 14, 15, 16 are mounted on the axis 2 via the rings 25, 26 and 27.
  • the rings 25, 26, 27 are fixed immovably in the axial direction between the stop rings 28, 29 fixedly connected to the axis 2.
  • the inner rings of the bearings 14, 15, 16 are fixed in the usual way on the rings 25, 26, 27 by means of clamping pieces and clamping rings.
  • the pressure rods 11, 12 have wedge-shaped inclined surfaces 33, 34 in the area of the rings 25, 26, 27. These act with correspondingly beveled wedge surfaces of the rings 25, 26, 27 together.
  • the inclined surfaces 34 are arranged with the same, but opposite, slope at the ends of the middle ring 37 and have a greater slope than the wedge surfaces 33.
  • the push rods 11, 12 are firmly connected at the end to the rings 36, 37 by means of axially extending screws.
  • the rings 36, 37 are provided with external threads onto which the internal thread of the worm wheel 38, 39 designed as a nut is screwed.
  • the worms 40, 41 With the worm threads of the worm wheels 38, 39, the worms 40, 41, which are mounted in the housing rings 42, 43, mesh with the frame.
  • the screws 40, 41 are provided with handles, not shown, by their actuation the push rods 11, 12 can be displaced in the axial direction.
  • the roller jacket 18 can be bent by radial displacement of the roller bearings 14, 15, 16.
  • the rings 25, 26, 27 carrying the roller bearings 14, 15, 16 form on their sides opposite the pressure rods 11, 12 with the axis 2 approximately sickle-shaped gaps 45, as is particularly clear for the ring 25 from FIG. 2.
  • the roller bearings 25, 26, 27 can thereby be adjusted by axially displacing the push rods 11, 12 with their rings relative to the axis 2 in the radial direction, so that the roller shell is bent or tensioned in the desired manner by this adjustment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rotary Presses (AREA)

Claims (8)

  1. Cylindre, avantageusement cylindre de contre-pression d'un cylindre d'impression avec une enveloppe de cylindre (18) reçue librement rotative sur un axe stationnaire (2) au moyen d'un certain nombre de roulements (14, 15, 16) agencés à une certaine distance les uns des autres, par l'intermédiaire de bagues (25, 26, 27), dont au moins les centraux sont radialement mobiles pour le fléchissement ou le voilage de l'enveloppe (18),

    caractérisé en ce que

    l'axe (2) est pourvu d'une rainure axiale continue (10) dans laquelle est guidée axialement mobile une tige de pression (11, 12) qui est pourvue, dans la zone des bagues (25, 26, 27), de surfaces de cale (33, 34) s'appuyant à l'intérieur de celles-ci,

    en ce que les bagues (25, 26, 27) portant les roulements (14, 15, 16) sont logées sur l'axe (2) avec un certain jeu, le jeu étant formé d'une fente (45) entre le côté de l'axe (2) se trouvant vis-à-vis de la tige de pression (11, 12) et les bagues (25, 26, 27) et

    en ce qu'un système (36-42) pour le déplacement axial des tiges de pression (11, 12) relativement à l'axe (2) est prévu.
  2. Cylindre selon la revendication 1, caractérisé en ce que les bagues (25, 26, 27) sont pourvues, dans la zone des tiges de pression (11, 12), de surfaces de cale obliques en sens opposé au surfaces de cale (33, 34).
  3. Cylindre selon la revendication 1 ou 2, caractérisé en ce que les bagues (25, 26, 27) délimitent, dans la zone de leur côté situé face à la tige de pression (11, 12), avec l'axe (2), des fentes (45) en forme de faucille.
  4. Cylindre selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les bagues (25, 26, 27) sont maintenues stationnaires sur l'axe (2) au moyen de bagues de butée (28, 29) les enchassant des deux côtés.
  5. Cylindre selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la rainure (10) est en contre-dépouille en queue d'aronde et la tige de pression (11, 12) présente un profil en section transversale en forme de trapèze correspondant.
  6. Cylindre selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les pentes des surfaces de cale (33, 34) de la tige de pression (11, 12) augmentent d'une bague à l'autre jusqu'au milieu du cylindre.
  7. Cylindre selon l'une quelconque des revendications 1 à 6, caractérisé en ce que dans la rainure (10) sont agencées, en image miroir, deux tiges de pression (11, 12), qui incorporent entre elles, dans la zone du milieu du cylindre, une fente (12) et reposent par leurs surfaces de cales côté extrémité (34) sur une bague moyenne commune (27) ayant des surfaces de cale biseautées (34) de manière opposée.
  8. Cylindre selon l'une quelconque des revendications 1 à 7, caractérisé en ce que, pour former le système pour le déplacement axial de la tige de pression, chaque tige de pression (11, 12) est solidement reliée à une bague (36, 37) pourvue d'un filetage externe, sur laquelle est vissée une roue à vis sans fin (38, 39) pourvue d'un filetage interne correspondant, avec laquelle s'engrène une vis sans fin (40, 41) pourvue d'un volant et fixée solidement sur le châssis.
EP86102859A 1985-05-28 1986-03-05 Cylindre, de préférence cylindre de contre-pression d'un cylindre gravé dont la chemise peut être courbée Expired - Lifetime EP0203279B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853519084 DE3519084A1 (de) 1985-05-28 1985-05-28 Walze, vorzugsweise gegendruckwalze eines tiefdruckformzylinders, mit durchbiegbarem walzenmantel
DE3519084 1985-05-28

Publications (3)

Publication Number Publication Date
EP0203279A2 EP0203279A2 (fr) 1986-12-03
EP0203279A3 EP0203279A3 (en) 1988-08-03
EP0203279B1 true EP0203279B1 (fr) 1991-06-19

Family

ID=6271808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102859A Expired - Lifetime EP0203279B1 (fr) 1985-05-28 1986-03-05 Cylindre, de préférence cylindre de contre-pression d'un cylindre gravé dont la chemise peut être courbée

Country Status (3)

Country Link
US (1) US4685182A (fr)
EP (1) EP0203279B1 (fr)
DE (1) DE3519084A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2608517C2 (ru) * 2011-05-20 2017-01-19 КБА-НотаСис СА Система удаления краски для машины глубокой печати

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681863A5 (fr) * 1990-06-25 1993-06-15 Escher Wyss Ag
US5162119A (en) * 1991-04-09 1992-11-10 Nabisco, Inc. Printing and forming apparatus for making printed baked goods
DE4406572B4 (de) * 1994-03-01 2004-06-03 Heidelberger Druckmaschinen Ag Rotationsdruckmaschine
EP2524805A1 (fr) 2011-05-20 2012-11-21 KBA-NotaSys SA Système d'essuyage d'encre pour presse d'impression en creux

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US3005583A (en) * 1959-03-24 1961-10-24 United States Steel Corp Adjustable self-centering roll
US3099072A (en) * 1961-06-13 1963-07-30 Mount Hope Machinery Ltd Table roll with means for removing longitudinal curvature
US3094771A (en) * 1961-06-13 1963-06-25 Mount Hope Machinery Ltd Table roll with means for removing longitudinal curvature
FR1397496A (fr) * 1964-03-19 1965-04-30 Neyrpic Ets Perfectionnements aux cylindres pour le traitement par pression des matériaux en bandes
US3328866A (en) * 1965-07-19 1967-07-04 Mount Hope Machinery Ltd Roll with means for removing longitudinal curvature
US3389450A (en) * 1966-05-20 1968-06-25 Mount Hope Machine Company Inc Non-deflecting roll
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DE2100928A1 (de) * 1971-01-11 1972-07-20 Yamauchi Rubber Ind Co Ltd Ballig-Walze mit einer Vorrichtung zur Einstellung der Sehnenhöhe der Walze
US3838480A (en) * 1972-06-21 1974-10-01 Mount Hope Machinery Ltd Adjustable curvature axle assembly for expander rolls and the like
DE2257947A1 (de) * 1972-11-21 1974-06-06 Franz Manefeld Fa Breitstreckwalze mit einstellbarer kruemmung
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FR2372107A1 (fr) * 1976-11-25 1978-06-23 Marion Louis Rouleau de guidage de defilement pour materiaux en feuilles
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2608517C2 (ru) * 2011-05-20 2017-01-19 КБА-НотаСис СА Система удаления краски для машины глубокой печати

Also Published As

Publication number Publication date
DE3519084C2 (fr) 1989-05-18
DE3519084A1 (de) 1986-12-04
US4685182A (en) 1987-08-11
EP0203279A2 (fr) 1986-12-03
EP0203279A3 (en) 1988-08-03

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