EP0357530A1 - Gestell für Flexodruckmaschine - Google Patents

Gestell für Flexodruckmaschine Download PDF

Info

Publication number
EP0357530A1
EP0357530A1 EP89440083A EP89440083A EP0357530A1 EP 0357530 A1 EP0357530 A1 EP 0357530A1 EP 89440083 A EP89440083 A EP 89440083A EP 89440083 A EP89440083 A EP 89440083A EP 0357530 A1 EP0357530 A1 EP 0357530A1
Authority
EP
European Patent Office
Prior art keywords
walls
module
printing
modules
frame according
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.)
Withdrawn
Application number
EP89440083A
Other languages
English (en)
French (fr)
Inventor
Francis Huck
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.)
Hi Holweg International SA
HI Holweg International SA
Original Assignee
Hi Holweg International SA
HI Holweg International SA
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 Hi Holweg International SA, HI Holweg International SA filed Critical Hi Holweg International SA
Publication of EP0357530A1 publication Critical patent/EP0357530A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B41F13/0024—Frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing

Definitions

  • the invention relates to a frame for a flexographic printing machine with an individual counterpressure cylinder and comprising one or more printing units.
  • the invention will find its application, both with manufacturers and users of printing devices and, in particular, machines of the flexographic type.
  • the flexographic printing process which is particularly known, consists of printing on strip supports such as paper, cellulose film, aluminum, plastics, etc. These prints are produced, more precisely, by passing the strip between a counterpressure cylinder and a plate cylinder, the latter transferring the graphics to be printed on the support.
  • An ink cylinder receives an ink dosage from either a bubbling cylinder immersed in a basin containing ink, or by any other device, and ensures the transfer of ink onto the plate cylinder.
  • the combination of these different cylinders constitutes a printing group.
  • the number of these printing groups, grouped together in a flexographic printing machine will depend on the number of basic colors constituting the printing. So there are so-called two-color, four-color or six-color machines. When printing requires a higher number of colors, it is common to combine several flexographic printing units or machines.
  • the present invention relates, more particularly, to flexographic printing machines of the second type and comprising, for each printing unit, a counterpressure cylinder.
  • the current design of these flexographic machines with individual counterpressure cylinders consists of a frame formed by two parallel walls arranged on either side of a vertical plane passing through the longitudinal axis of the strip forming the support to be printed. These walls are kept assembled by means of crossmembers distributed over the entire height of the frame. Furthermore, their size and their design depend on the number of printing units. Thus, this number is definitively determined at the time of the design of the flexographic printing machine.
  • the different counterpressure cylinders and implanted the drive mechanisms of the latter are fixed, horizontally, the different counterpressure cylinders and implanted the drive mechanisms of the latter.
  • the front and rear walls forming said frame are provided with bearings serving to accommodate a whole series of tape return rollers making it possible to orient the latter through the machine during printing.
  • the locations for printing units are drawn on the frame to the right of each counterpressure cylinder.
  • Such locations may consist of slides arranged on each of the front and rear walls, slides on which is mounted, sliding, a support with which the plate cylinder is associated.
  • the inking device composed of the inking cylinder and the bubbling cylinder is, according to this same particular embodiment, secured to a second support which is itself mounted free in translation on the support of the plate cylinder.
  • a four-color machine is made up of four printing groups, it thus allows printing in four different shades or printing a double-sided tape requiring four applications.
  • document US-A-2,479,023 discloses a frame for a printing machine, of the offset type, which is in modular form. More specifically, each module comprises a printing group and has, both in its front and rear part, assembly and positioning means allowing its association with other modules. This characteristic requires, however, the online arrangement of the various modules, resulting in a not insignificant size of the printing machine thus designed. In all cases, this cannot be adapted to a flexographic printing group.
  • the present invention aims to remedy the aforementioned drawbacks.
  • the invention as characterized in the claims, solves the problem of creating a frame for a flexographic printing machine with individual counterpressure cylinder and comprising one or more printing units, this frame being modular each module. comprising two parallel walls made integral by means of crosspieces and ensuring the support and the maintenance of a printing unit and its associated back-pressure cylinder, the various modules being, by the way, superimposable and comprising, in combination: - means ensuring their positioning in relation to each other - connecting means to make them united - And means for shifting them in a horizontal direction to allow the partial winding of the support to be printed around the backpressure cylinders of each of the printing units.
  • a flexographic printing machine comprising such a modular frame allows the suppression or the addition of printing groups according to the nature of the printing to be carried out or of the customer request.
  • This machine thus acquires great adaptability to the most diverse manufacturing programs and this, at the always optimized production cost.
  • the possibility, on the one hand, of superimposing the different modules and, on the other hand, of shifting them relative to each other, contributes to reducing the overall size of the flexographic printing machine without this posing any problem in terms of the passage of the support to be printed in said machine.
  • the present invention relates more particularly to the frame 1 of a flexographic printing machine 2 of the type with individual counterpressure cylinder.
  • these printing machines comprise for each printing group 3, 4, 5, 6 (four in number in FIG. 1), a counterpressure cylinder 9, 10, 11, 12.
  • the number of these printing units is, of course, dependent on the number of printing layers to be transferred to the support 15 consisting of a strip for example, of paper, cellulose film, aluminum, plastics .
  • the support 15 consisting of a strip for example, of paper, cellulose film, aluminum, plastics .
  • Any flexographic printing machine consists of a frame 1 serving as a support for the various printing groups 3 to 6 and on which the counterpressure cylinders 9 to 12 are fixed.
  • This frame 1 also contains motor and drive (not shown) capable of animating said backpressure cylinders 9 to 12 with a rotational movement during production.
  • the frame according to the invention has the particularity of being modular.
  • printing unit 3 to 6 and backpressure cylinders 9 to 12 corresponds to a module 16, 17, 18, 19, said to be basic because of their identity whatever their position in the flexographic printing machine.
  • a basic module 16 to 19 consists of two walls 20 arranged parallel and symmetrically on either side of the longitudinal median plane of the strip 15. These walls 20 are made integral with one another by means of cross members 21, 22 , 23 the number and cross-section of which can be determined according to criteria of material resistance. Therefore, it has been recommended, according to the embodiment shown in FIGS. 1 and 2, to use a profile 21 of high mechanical strength (for example, of "U” or "I” section) to connect the walls 20 at the level of what constitutes, as described below, the location of a printing unit. This gives better transverse rigidity.
  • crosspieces 22, 23 located on the side of the passage of the strip, will preferably be chosen, of round section so as not to damage said strip 15 when it is threaded into the flexographic printing machine 2.
  • These walls 20 also comprise a bearing 24 in which is mounted, free to rotate, one of the ends of the counterpressure cylinder 9 to 12.
  • Other bearings can be fitted or provided in these walls 20, of a module 16 to 19, such bearings serving to hold strip return rollers 25, 26, orienting the latter through said module 16 to 19.
  • a printing group 3 to 6 consists, in all cases, of a cylinder plate 28 to 31 on which the plates which are to be printed on the support are reported.
  • These plate cylinders 28 to 31 are of variable diameter, depending on the printing format and are arranged, parallel to the cylinders 9 to 12 pressure relief, so as to cooperate with them during printing. They are, moreover, mounted free in rotation on a support 32 movable in translation on the frame 1.
  • these printing units 3 to 6 comprise an ink cylinder 33, 34, 35, 36 generally screened, ensuring the transfer of ink, according to a dosage determined on the plate cylinder 28 to 31.
  • This ink cylinder 33 to 36 is integral with a slide 37 capable of moving on the plate support 32 in a direction parallel to the movement of the latter on the frame 1.
  • each module 16 to 19 of the frame 1 is associated with a printing group 3 to 6, their walls 20 comprise support means 38 for the latter.
  • the design of these support means 38 will be more particularly adapted to that of the supports 32 of the plate cylinders 28 to 31.
  • the various modules 16 to 19 being brought to be superimposed on each other, they advantageously comprise, according to another characteristic of the invention, on the one hand, means 39 ensuring their positioning with respect to each other and connecting means 40 for making them integral.
  • the positioning means 39 consist of a key 41 which is housed in a groove 42 machined on the upper edge 43 of the walls 20 of a module 16.
  • This key 41 cooperates with a groove 44 arranged in the lower edge 45 of the walls 20 of a module 17 coming to be positioned immediately above.
  • each wall 20 of a module 16 to 10 comprises, on its upper 43 and lower 45 edge, a groove with dimensions adjusted to those of the key 41.
  • the latter is fixed beforehand and by means of fixing members 46 such as a screw on the walls 20 of a module 17 to assemble.
  • said key 41 is positioned on the walls 20 in a direction perpendicular to the plane of the latter. It cannot, therefore, guarantee their positioning in a direction transverse to the longitudinal median plane of the support 15.
  • said key 41 there have been fitted, at the two ends 47, 48 of said key 41, tapped orifices 49, 50 in which are screwed with bolts 51, 52 provided with a washer 53, 54 coming to bear, respectively, on the internal face 55 and external 56 of the walls 20, both of the upper module 17 and of the lower 16.
  • the tightening of these bolts 51, 52 causes, under the impulse of the washers 53, 54 the alignment of the superimposed walls 20 of the modules 16, 17 concerned.
  • the connecting means 40 may be designed by any removable fixing member such as screws 57 inserted in orifices 58 machined in the lower edge 59 of openings 60, 61 arranged in the lower part 62 of the modules 17 Such screws 57 cooperate with threaded orifices 63 present in the upper edge 43 of the walls 20 of an associated module 16.
  • the frame 1 comprises, on the one hand , a base 65 on which the lower modules 16, 18 are fixed.
  • This base 65 rests on the ground and may, in certain cases, be part of a structure 66 external to the flexographic printing machine and ensuring the orientation of the support 15 in the latter.
  • the frame 1 comprises a cap 67 which, like the base 65 can be integrated into the external structure 66 and ensures the connection of the upper modules 17, 19.
  • the positioning means 39 and the connecting means 40 involved in the cooperation of a lower module 16, 18 with the base 65 or of an upper module 17, 19 with the cap 67 may be identical to those mentioned above .
  • positioning means 39 mention will be made of the pins which, arranged on the upper edge 43 of the walls 20 of a module 16 to 19 and cooperating with a bore arranged in the lower edge 45 of said walls 20 of a module 16 to 19 superimposed ensure perfect identification of these modules 16 to 19 between them.
  • FIG. 2 represents a flexographic printing machine 68 provided with a frame 1 provided with six modules 16 to 19, 69 and 70. This type of design requires the consideration of particular conditions of flexographic printing.
  • the simplest solution consists in printing on the path of the strip 15, at the level of the entry and exit of a superposition of modules 16, 17, or 18, 19, a certain angle relative to the vertical so as to obtain the desired winding around the counterpressure cylinders 9 to 12.
  • the solution to the problem posed in the case of a machine 68 with six colors advantageously consists in providing the modules 16 to 19, 69 and 70 with means 71 making it possible to offset them between themselves in a horizontal direction and, this, all retaining the positioning means 39 and connection 40 adopted for the designs with two or four inking stations.
  • These means 71 consist, on the one hand, in a particular arrangement of the grooves 42 and 44 machined in the upper edge 43, respectively, the lower edge 45 of the walls 20 of each of these modules 16 to 19, 69 and 70. More specifically, these grooves 42, 44 are formed at a reduced distance from the internal lateral edge 72 of said walls 20 corresponding distance, substantially, offset conferred on the different modules. More precisely, to solve the problem of winding the strip 15 around the counterpressure cylinder 9 to 14, while retaining the arrangement adopted within the framework of the four-color process, it is necessary to move the intermediate modules 17, 19 further apart. of the transverse median plane 64 relative to the other modules 16, 69, and 18, 70.
  • the intermediate module 17, 19 is positioned, relative to the lower module 16, 18 and upper 69, 70 by cooperation of said rear lateral edge 72 of this intermediate module 17, 19 with the keys 41 fixed, respectively, in the groove 42 present in the upper edge 43 of the walls 20 of the lower module 16, 18 and in the groove 44 machined in the lower edge 45 of the walls 20 of the upper module 69 , 70.
  • Another, more expensive solution consists in multiplying the number of grooves 42, 44 in the different walls 20, the distance between these grooves 42, 44 corresponding, substantially to the amplitude of the offsets printed on the modules.
  • the means 71 are completed by the production of additional orifices 75, 76 in the lower edge 59 of the openings 60, 61 made in the lower part 62 of the walls 20. These orifices 75, 76 are used for the passage of screws 57 and respect a gap relative to the central orifice 58 corresponding to the aforementioned offset so that said screw 57 is able to cooperate with the same threaded orifice 63 present in the upper edge 43 of the walls 20 whatever the position of the modules 16, 17, 69 or 18, 19, 70 between them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
EP89440083A 1988-08-31 1989-08-01 Gestell für Flexodruckmaschine Withdrawn EP0357530A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8811571A FR2635717A1 (fr) 1988-08-31 1988-08-31 Bati d'une machine d'impression flexographique
FR8811571 1988-08-31

Publications (1)

Publication Number Publication Date
EP0357530A1 true EP0357530A1 (de) 1990-03-07

Family

ID=9369708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89440083A Withdrawn EP0357530A1 (de) 1988-08-31 1989-08-01 Gestell für Flexodruckmaschine

Country Status (2)

Country Link
EP (1) EP0357530A1 (de)
FR (1) FR2635717A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000006385A1 (de) * 1998-07-24 2000-02-10 Koenig & Bauer Aktiengesellschaft Abstandsveränerbare fünfzylinderoffsetdruckeinheiten
US6186064B1 (en) * 1998-05-22 2001-02-13 Heidelberger Druckmaschinen Ag Web fed rotary printing press with movable printing units

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479023A (en) * 1946-08-03 1949-08-16 Michie Printing Press & Mfg Co Frame structure for printing press units and assembling method therefor
US3218969A (en) * 1962-11-06 1965-11-23 Wolverine Flexographic Mfg Co Longitudinal registry means for flexographic press
FR1429646A (fr) * 1965-03-29 1966-02-25 Planeta Veb Druckmasch Werke Dispositif pour la liaison ajustée d'ensembles ou de groupes constitutifs de machines d'imprimerie en plusieurs couleurs
FR2122060A5 (de) * 1971-01-11 1972-08-25 Holweg Const Mec

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479023A (en) * 1946-08-03 1949-08-16 Michie Printing Press & Mfg Co Frame structure for printing press units and assembling method therefor
US3218969A (en) * 1962-11-06 1965-11-23 Wolverine Flexographic Mfg Co Longitudinal registry means for flexographic press
FR1429646A (fr) * 1965-03-29 1966-02-25 Planeta Veb Druckmasch Werke Dispositif pour la liaison ajustée d'ensembles ou de groupes constitutifs de machines d'imprimerie en plusieurs couleurs
FR2122060A5 (de) * 1971-01-11 1972-08-25 Holweg Const Mec

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186064B1 (en) * 1998-05-22 2001-02-13 Heidelberger Druckmaschinen Ag Web fed rotary printing press with movable printing units
WO2000006385A1 (de) * 1998-07-24 2000-02-10 Koenig & Bauer Aktiengesellschaft Abstandsveränerbare fünfzylinderoffsetdruckeinheiten
US6539857B1 (en) 1998-07-24 2003-04-01 Koenig & Bauer Aktiengesellschaft Five-cylinder offset printing units with adjustable spacing

Also Published As

Publication number Publication date
FR2635717A1 (fr) 1990-03-02

Similar Documents

Publication Publication Date Title
EP0095423B1 (de) Offset-Druckapparat für verschiedene Formate
EP0390689B1 (de) Rotierende Schneidvorrichtung
FR2744389A1 (fr) Groupe d'impression permettant un changement de plaques d'impression en marche
EP0453973A1 (de) Offsetdruckmaschine fÀ¼r veränderliche Formate mit automatischem Laden und Entladen des Zylinders
CH678413A5 (de)
FR2588211A1 (fr) Tambour de transfert de feuilles pour une machine rotative d'impression
EP0611240B1 (de) Druckmaschine mit mindestens einem Zylinder mit doppeltem Verfahrweg
FR2889822A1 (fr) Unite d'impression a cylindre porte-blanchet mobile entre une position en-pression et une position hors-pression et presse d'impression correspondante.
FR2497153A1 (fr) Agencement pour separer des zones d'encrage dans des encriers de presses a imprimer
EP0357530A1 (de) Gestell für Flexodruckmaschine
FR2733456A1 (fr) Ensemble d'arbre de guidage pour une imprimante
FR2723883A1 (fr) Dispositif d'impression destine a imprimer des cartes en matieres plastique.
EP0148074A2 (de) Vorrichtung zum Wenden der Papierbahn für Schön- und Widerdruck
FR2898116A1 (fr) Dispositif modulaire pour distribuer et ejecter automatiquement des produits stockes en rangees longitudinales paralleles
FR2694233A1 (fr) Cylindre intermédiaire d'une presse à alimentation par feuilles.
FR2684913A1 (fr) Appareil de decoupage rotatif.
FR2932717A1 (fr) Machine a imprimer.
FR2707210A1 (fr) Dispositif destiné à loger et à régler un rouleau doseur dans une unité d'apprêt.
FR2637843A1 (fr) Presse a imprimer offset
FR2689451A1 (fr) Dispositif d'encrage pour un appareil d'impression héliographique.
EP0811458B1 (de) Vorrichtung und Anlage zum Halten von zwei Blechstücken
CH615863A5 (en) Flat offset press
FR2795662A1 (fr) Dispositif muni d'une tete d'impression permettant de realiser des decorations sur des objets volumineux
FR2799686A1 (fr) Dispositif pour etancher un reservoir d'encre sur des machines d'impression et encrier, mecanisme encreur et element imprimant utilisant un tel dispositif
FR2580227A1 (fr) Rotative dont les groupes imprimants sont equipes de batis lateraux constitues chacun par une partie inferieure et une partie superieure

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900625

17Q First examination report despatched

Effective date: 19920210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920710