EP2639064A1 - Unité d'impression flexographique - Google Patents

Unité d'impression flexographique Download PDF

Info

Publication number
EP2639064A1
EP2639064A1 EP13158509.3A EP13158509A EP2639064A1 EP 2639064 A1 EP2639064 A1 EP 2639064A1 EP 13158509 A EP13158509 A EP 13158509A EP 2639064 A1 EP2639064 A1 EP 2639064A1
Authority
EP
European Patent Office
Prior art keywords
roller
printing unit
sleeve
unit according
pressure
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Withdrawn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
EP13158509.3A
Other languages
German (de)
English (en)
Inventor
Andreas Rother
Peter Allard
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.)
SDF Schnitt-Druck-Falz Spezialmaschinen GmbH
Original Assignee
SDF Schnitt-Druck-Falz Spezialmaschinen GmbH
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 SDF Schnitt-Druck-Falz Spezialmaschinen GmbH filed Critical SDF Schnitt-Druck-Falz Spezialmaschinen GmbH
Publication of EP2639064A1 publication Critical patent/EP2639064A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers

Definitions

  • the invention relates to a flexographic printing unit according to the preamble of claims 1 and 2.
  • a flexographic printing unit is generally composed of an applicator roll over which the printing form is inked, a printing cylinder accommodating the printing form, and an impression cylinder.
  • the application roller in flexographic printing is an anilox roller with which a good ink dosage can be achieved during transfer to the printing form.
  • Anilox roll surfaces are usually made of chrome or ceramic with engravings machined into the surface, usually in the form of small wells.
  • the cups serve to store the color before it is subsequently transferred to the raised parts of the printing form, but always leaving a residue of color in the individual cups.
  • the applicator roller or anilox roller is preceded by a fountain roller, which runs on a part of its circumference through a paint tray.
  • the fountain roller picks up color as it passes through the ink tray and passes it to the anilox roller.
  • Excess paint can be wiped off with the aid of a doctor blade, which stands sharply against the outer surface of the anilox roller.
  • excess ink is stripped off with a doctor blade from the outer shell of the anilox roller.
  • the ink is not absorbed via an upstream dipping roller, but pumped into a tight fitting against the outer shell of the anilox chamber from which the color therefore passes directly to the outer surface of the anilox roller.
  • the invention is therefore an object of the invention to provide a printing unit for the flexographic printing process, which allows for changes in flexographic printing higher flexibility due to a lower conversion effort.
  • a flexographic printing unit in which the applicator roll composed of a roll core and a roll core surrounding the sleeve whose outer shell is provided with a grid, and which has at least one clamping surface on its inner shell, against the clamping means of are radially clamped inside, the clamping means are part of the roll core of the applicator roll.
  • a flexographic printing unit in which the fountain roller from a roll core and a roll core surrounding the immersion sleeve together, which has at least one clamping surface on its inner shell, against the clamping means from the inside are tensioned, wherein the clamping means Part of the roll core of the fountain roller are.
  • the clamping means comprise at least one spreading device which can be actuated from the inside against the clamping surface.
  • the spreading device which may be of the mechanical or hydraulic type, exerts a radially outward directed radial pressure on the respective clamping surface.
  • a component of the spreading device is at least one expanding element which can be expanded outwards.
  • components of the spreading device are a first, expandable to the outside expander at one end of the roller core and at least one further, expandable outward expansion element at the other end of the roller core is particularly preferred.
  • the expansion element by means of a pressure element is expandable, which is adjustable in the longitudinal direction of the axis of rotation and thereby exerts an axial pressure on the expansion element.
  • a further embodiment is characterized by a thrust transmitting sleeve as a pressure element.
  • This bushing may be a screw-threaded on an external thread of the roll core threaded bush.
  • the pressure element can be a cylindrical bushing that can be moved longitudinally along a longitudinal section of the roller core. In the latter case, this sleeve is on the one hand axially supported relative to the first expansion element, and on the other hand relative to the further expansion element, so that it forwards the expansion required for the expansion of the first expansion element on the second or further expansion element.
  • the roller core of the applicator roller or the immersion roller consist of a central base body and the longitudinally arranged one behind the other and in the axial direction against each other supporting components threaded bushing, first expansion element, another bushing and further expansion element, and that the further spreading element axially supported against a collar, which is rigidly arranged on the base body.
  • the exchangeable sleeve is in several parts and composed of an elongated body and at least one inner pressure sleeve inserted therein.
  • the pressure sleeve extends only over part of the length of the body, wherein the clamping surface is located exclusively on the pressure sleeve.
  • the body z. B. made of light metal, however, the pressure applied to the full clamping pressure sleeves made of a particularly pressure-stable metal material, eg. B. steel.
  • the roller core is rotatably mounted with its first end in a first side part, and with its second, driven end in a second side part, wherein the first side part is provided around the pivot bearing with an opening whose diameter to the axial Removing the sleeve is greater than the outer diameter of the sleeve.
  • the Fig. 1 shows a highly schematic representation of a flexographic printing in the design with dipping roller.
  • a pressure roller is used a replaceable on its outer circumference printing plates 4 receiving plate cylinder 1, in two side parts 8A, 8B ( Fig. 2 ) of the printing unit is rotatably mounted, and rests with its outer periphery against a counter-rotating to the plate cylinder 1 counter-pressure roller 3.
  • Passed between the platen 1 and counter-pressure roller 3 is the substrate to be printed 2, z.
  • the printing cylinder or cliché cylinder 1 consists of a cylinder core 1A, which in most cases remains uniform in practice, and an exchangeable cylinder sleeve 1 B.
  • the cylinder sleeve 1B accommodates the printing plates on the outside and has a specific diameter for a given flexographic printing format, and opposes the format change another cylinder sleeve with different diameter interchangeable.
  • the applicator roller 5 is preceded by a running in a paint tray 7 and partially immersed in the ink fountain immersion roller 6.
  • a running in a paint tray 7 and partially immersed in the ink fountain immersion roller 6.
  • squeegee 9 abut which may be formed, for example, as a doctor blade.
  • the application roller 5 is composed of a rotatably mounted at its ends in the side parts 8A, 8B roller core 10, and an externally seated on the roller core, interchangeable sleeve 11. Between the roller core 10 and the sleeve 11 is preferably a clearance fit, ie in any case no interference fit , In the case of a separate rotary drive of the applicator roller 5, this engages only on the roller core 10.
  • Fig. 1 not only does the applicator roll, but also the fountain roller 6 consist of a roller core 20 rotatably mounted at its ends in the side parts 8A, 8B and a replaceable immersion sleeve 21 seated on the outside of the roller core.
  • the sleeve 21 of the fountain roller 6 is provided for optimum color adhesion and spreading with a rubberized lateral surface or such of a thermoplastic.
  • the fountain roller 6 In the case of a separate rotary drive of the fountain roller 6, this engages only on the roller core 20.
  • the fountain roller 6 is adjustable against the anilox roller 5.
  • the anilox roller 5 releases the color particles from the sieve cups on their surface.
  • the flushing of the ink in the wells is carried out either by the counter-rotating to the anilox roller 5 immersion roller 6, or directly through the ink supply in a - not shown on the drawing - chambered doctor blade, in which case the dip roller deleted.
  • the existing sleeve 11, 21 is replaced by another, application technology specifically suitable sleeve preferably having the same outer diameter.
  • the respective roller core 10 and 20, however, remains one and the same. In this way, it is possible for each type of multicolored printed products to set up the inking so that an optimal printing effect is achieved.
  • Fig. 2 shows the example of the anilox roller 5 whose installed position between the two side parts 8A, 8B of the printing unit, and Fig. 3 only the anilox roller 5 itself with its individual parts, wherein in turn the fountain roller has the same basic structure.
  • the center of the roller core forms a solid solid shaft designed base body 12 which is designed over the effective roller length is substantially cylindrical, and at the ends of tapered bearing pins 12A, 12B are formed. In the region of both ends of the substantially cylindrical portion of the main body 12 are the radially acting clamping means 40th
  • the clamping means 40 are designed as purely mechanical spreading devices 42. They consist of a first expansion element 43A in the FIGS. 2 and 3 left roll end, and a second expansion element 43B at the right end of the roll.
  • the base body 12 of the roller core 10 is provided at both ends, already outside the actual roller section, with the bearing pins 12A, 12B, and mounted by means of these pins in the stationary side parts 8A, 8B. On the one pin 12 B also engages the rotary drive of the anilox roller 5 or, if the roller is the fountain roller 6, the rotary drive.
  • Each expansion element 43A, 43B consists of a corrugated ring. When pressure is exerted in the direction of the axis of rotation A it comes by deformation effects to a radial expansion of the expansion element 43A, 43B, whereby this spans radially against a cylindrical clamping surface 41 on the inner shell of the interchangeable sleeve 11, 21.
  • an elongated sleeve 45 which serves for the axial pressure transmission.
  • the bush 45 sits axially freely movable on the cylindrical portion of the body 12.
  • the right spreader 43 B is axially supported against a collar 46 which is rigidly secured to the base 12, or may be one-piece part of the body 12.
  • a threaded bushing 49 is screwed onto an external thread 47 of the base body 12, which is provided for this purpose with a corresponding internal thread.
  • the threaded bush 49 is axially against the spreader 43A from the outside. It can be secured against rotation by a grub screw.
  • pressure-receiving sleeves 13A, 13B are inserted into the base body 50 of the sleeve 11 on those longitudinal sections on which the clamping means 40 are located, on each of which the cylindrical clamping surface 41 is located.
  • the pressure receiving sleeves 13A, 13B are made of a stronger material than the main body 50 of the sleeve 11, preferably the pressure receiving sleeves 13A, 13B are steel bushings.
  • Fig. 2 is to replace the sleeve 11 and 21, the one side part 8A of the printing unit with an outwardly pivotable about a hinge 54 bearing receptacle 55 is provided.
  • the right pivot bearing 52B sits directly in the corresponding side part 8B, as is on this side of the anilox roller 5 whose drive is, and to this side no replacement of the interchangeable sleeve 11th he follows.
  • FIG. 4 shows an alternative embodiment of the anilox roller 5, wherein the clamping is done not by mechanical, but by hydraulic clamping means 40. Again, the basic structure of the roller in the case of a fountain roller 6 is the same.
  • the two spreading elements 43A, 43B are expandable by a hydraulic fluid, and designed for this purpose as pressure sleeves 60 which surround the two end portions of the roller core 10.
  • a hydraulic volume which is composed of a central bore 62 in the base body 12, of this outgoing transverse bores 63, and annular channels in the outer side of the base body 12, in which the transverse bores 63 open. Seals 64 between the annular channel and the inside of the respective pressure sleeve 60 prevent a pressure loss in the axial direction.
  • the hydraulic piston 70 is seated in a bore 71 in the journal 12A of the roller core 10.
  • the bore 71 is an extension of the central bore 62, and is in communication therewith ,
  • the hydraulic piston 70 can be adjusted along the bore 71, and so adjust the trapped hydraulic volume while building a corresponding hydraulic pressure.
  • the screw 72 as well as supported on the rear hydraulic piston 70 is seated in a longitudinal bore in the pin 12 A of the roller core 10, the screw 72 is easily accessible from the outside, so as to build up and adjust the hydraulic pressure.
  • the hydraulic piston 70 remote from the end of the roller core 10 is in turn provided with a collar 46 which forms an axial stop for the sleeve 11 of the roller.
  • the stopper 46 is at Fig. 4 fastened by screwing, he also takes on a vent hole of the hydraulic system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP13158509.3A 2012-03-12 2013-03-11 Unité d'impression flexographique Withdrawn EP2639064A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210004699 DE102012004699A1 (de) 2012-03-12 2012-03-12 Flexodruckwerk

Publications (1)

Publication Number Publication Date
EP2639064A1 true EP2639064A1 (fr) 2013-09-18

Family

ID=47900705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13158509.3A Withdrawn EP2639064A1 (fr) 2012-03-12 2013-03-11 Unité d'impression flexographique

Country Status (2)

Country Link
EP (1) EP2639064A1 (fr)
DE (1) DE102012004699A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015135532A1 (fr) 2014-03-11 2015-09-17 Inometa Gmbh & Co. Kg Cylindre d'impression et procédé pour monter un cylindre d'impression

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218466A1 (de) 2015-09-25 2017-03-30 Koenig & Bauer Ag Rasterwalze und Hülse dafür

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718549A1 (de) * 1997-05-02 1998-11-05 Druck Und Verlagshaus Frankfur Druckmaschine
WO2010003652A1 (fr) * 2008-07-10 2010-01-14 Windmöller & Hölscher Kg Système d’encrage d’une machine à imprimer
US20120055359A1 (en) * 2010-09-08 2012-03-08 Uteco Converting S.P.A. Anilox roller, particularly for flexographic printing machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275112A (en) * 1964-07-06 1966-09-27 Wolverine Flexographic Mfg Co Reversible one way clutch
DE19804269A1 (de) * 1998-02-04 1999-08-05 Heidelberger Druckmasch Ag Vorrichtung zum Auftragen einer Flüssigkeit auf einen Bedruckstoffbogen, insbesondere Druck, oder Lackierwerk, in einer Bogenrotationsdruckmaschine
AUPR857401A0 (en) * 2001-10-29 2001-11-29 Kirk Engineering Services Australia Pty Ltd Printing cylinders and methods of construction
FR2843071B1 (fr) * 2002-08-02 2005-02-18 Komori Chambon Perfectionnements aux machines d'impression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718549A1 (de) * 1997-05-02 1998-11-05 Druck Und Verlagshaus Frankfur Druckmaschine
WO2010003652A1 (fr) * 2008-07-10 2010-01-14 Windmöller & Hölscher Kg Système d’encrage d’une machine à imprimer
US20120055359A1 (en) * 2010-09-08 2012-03-08 Uteco Converting S.P.A. Anilox roller, particularly for flexographic printing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015135532A1 (fr) 2014-03-11 2015-09-17 Inometa Gmbh & Co. Kg Cylindre d'impression et procédé pour monter un cylindre d'impression
DE102014103251A1 (de) 2014-03-11 2015-09-17 Inometa Gmbh & Co. Kg Druckwalze und Verfahren zum Montieren einer Druckwalze

Also Published As

Publication number Publication date
DE102012004699A1 (de) 2013-09-12

Similar Documents

Publication Publication Date Title
EP0549936B1 (fr) Cylindre de transfert avec manchon échangeable, supporté entre deux parois latérales d'un élément d'impression
DE102006030290B3 (de) Druckwerk
DE10244043B4 (de) Vorrichtung zum Einstellen von Walzen in einer Druckmaschine
DE1966679A1 (de) Lagerung der druckwerkszylinder einer offset-bogenrotationsdruckmaschine
EP2019753B1 (fr) Dispositifs disposés dans un groupe d'impression d'une presse rotative
DE19846677C2 (de) Druckwalze mit austauschbarem äußeren Mantel
EP2019752B1 (fr) Mécanisme d'encrage de presse rotative comprenant un cylindre porte-film
EP2639064A1 (fr) Unité d'impression flexographique
DE10313444B4 (de) Druckwerk einer Tiefdruckmaschine
DE102006041314B4 (de) Druckwerk einer Tiefdruckmaschine
DE10012189A1 (de) Druckwerk in einer Druckmaschine
DE102006042590B4 (de) Rotationsdruckmaschine mit mindestens einem eine Farbstromtrennwalze aufweisenden Farbwerk
EP3678864B1 (fr) Rouleau distributeur ainsi que machine d'impression comprenant plusieurs groupes d'impression pourvus d'un tel rouleau
EP1628828B1 (fr) Unite de blocage de mandrin concue pour les mandrins de rouleau imprimeur d'une presse rotative
WO2008043747A1 (fr) Ensemble de palier de support pour un rouleau encreur ou de contre-pression
EP2323850B1 (fr) Système d'encrage d'une machine à imprimer
DE102007001948A1 (de) Druckmaschine
DE10303386B4 (de) Elastomer-beschichtete Walze
DE19718549B4 (de) Druckmaschine
EP3653382B1 (fr) Dispositif de palier détachable d'un cylindre d'encrage d'une machine d'impression
DE4308126A1 (de) Verfahren und Vorrichtung zum Verstellen von Druckzylindern
EP3170665B1 (fr) Procédé de fonctionnement d'une imprimante comprenant un cylindre tramé
DE10262042B4 (de) Farbwerk mit zumindest drei Walzen bzw. Zylinder
DE133969C (fr)
DE2939869A1 (de) Druckmaschine zum mehrfabrigen bedrucken einer durchlaufenden warenbahn

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): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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: 20140319