EP0364918B1 - Cylindre d'impression avec dispositif de nettoyage, en particulier pour presses rotatives - Google Patents

Cylindre d'impression avec dispositif de nettoyage, en particulier pour presses rotatives Download PDF

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Publication number
EP0364918B1
EP0364918B1 EP89119161A EP89119161A EP0364918B1 EP 0364918 B1 EP0364918 B1 EP 0364918B1 EP 89119161 A EP89119161 A EP 89119161A EP 89119161 A EP89119161 A EP 89119161A EP 0364918 B1 EP0364918 B1 EP 0364918B1
Authority
EP
European Patent Office
Prior art keywords
cylindrical body
color
printing cylinder
blade
washing water
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
EP89119161A
Other languages
German (de)
English (en)
Other versions
EP0364918A2 (fr
EP0364918A3 (fr
Inventor
Bernardo Mascioni
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.)
Stork Brabant BV
Original Assignee
MASCIONI SpA
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 MASCIONI SpA filed Critical MASCIONI SpA
Publication of EP0364918A2 publication Critical patent/EP0364918A2/fr
Publication of EP0364918A3 publication Critical patent/EP0364918A3/fr
Application granted granted Critical
Publication of EP0364918B1 publication Critical patent/EP0364918B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/008—Cleaning arrangements or devices for doctor blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/003—Cleaning arrangements or devices for screen printers or parts thereof
    • B41F35/004—Cleaning arrangements or devices for screen printers or parts thereof for cylindrical screens

Definitions

  • the present invention relates to a printing cylinder with washing means particularly for rotary printing machines.
  • the aim of the invention is indeed to eliminate the above described disadvantages by providing a printing cylinder which can be washed rapidly and easily without having to remove it from the printing machine and without introducing particular constructive complications.
  • a particular object of the invention is to provide a printing cylinder which is structured so as to achieve an accurate washing of all the regions thereof which are normally affected by color and without having to incline the cylinder to remove the washing water.
  • Another object of the present invention is to provide a printing cylinder which by virtue of its peculiar constructive characteristics is capable of giving the greatest assurances of reliability and safety in use.
  • Not least object of the present invention is to provide a printing cylinder which can be easily obtained starting from commonly commercially available elements and materials and is furthermore competitive from a merely economical point of view.
  • a printing cylinder with washing means particularly for rotary printing machines, according to the invention, characterized in that it comprises a cylindrical body inside which there extends a color feed bar provided with a coupling inlet arranged outside said cylindrical body, said bar being adapted to feed the color at a blade which acts on the inner surface of said cylindrical body, a washing water feed chamber being defined around said bar, said chamber being connected to an inlet coupling which is arranged outside said cylindrical body, said chamber having a first plurality of nozzles for sending the washing water toward said blade and a second plurality of nozzles for feeding the washing water toward the heads of said cylindrical body.
  • the printing cylinder with washing means particularly for rotary printing machines, according to the invention, comprises a cylindrical body 1 provided with the conventional surface for the passage of the color onto the fabric or the like to be printed.
  • a color feed bar 2 which is provided, at least at one of its axial ends, with a coupling inlet 3 which is external to said cylindrical body 1.
  • a doctor blade or knife 10 is connected to the color bar, inside the cylindrical body 1, and its free end acts at the inner surface of said cylindrical body so as to distribute the color to be printed.
  • the color besides being able to spread uniformly, significantly reduces the dirtying of the blade especially at the regions of coupling to the color bar, which are difficult to wash.
  • a washing water feed chamber 20 is defined around the color feed bar and preferably has, in transverse cross section, the shape of an annular sector which affects the periphery of the color bar except for the region where the blade 10 is provided.
  • Said washing water feed chamber 20 is provided with an inlet coupling 21 arranged outside said cylindrical body which is advantageously coaxial to the coupling inlet 3.
  • the washing water feed chamber 20 is provided with a first plurality of washing nozzles 30 which are arranged along the longitudinal extension of the chamber 20 and are orientated so as to feed the washing jets against both faces of the blade, consequently washing the blade accurately.
  • a second plurality of washing nozzles 35 is furthermore arranged at axial ends of the chamber 20; said nozzles are directed so as to propel the washing water jet toward the heads or axial ends 40 of the printing cylinder, thus eliminating the amount of color which unavoidably deposits in the printing cylinder in the region arranged outside the blade's longitudinal ends.
  • the heads 40 are furthermore provided with a plurality of discharge holes 41 which have their peripheral edge at the inner surface of the cylinder, so that there is no stagnation of washing water inside the cylinder even if said cylinder is not inclined.
  • a covering lid not illustrated in the drawings, is obviously furthermore provided; said lid closes the holes 41 during the normal printing steps, during which the color is inside the cylindrical body 1.
  • the printing cylinder according to the invention allows to print the color in the conventional manner by feeding the color by means of the color feed bar 2 which, by virtue of the coupling inlet 3, is connected to a color feed pump.
  • washing water is fed both by means of the inlet coupling 21 and by means of the coupling inlet 3, so that the washing water is sent into the chamber or color feed bar, washing it accurately; the washing water jets are simultaneously sent to the blade and wash it completely, being facilitated in doing so by the fact that the color is fed onto the blade already proximate to the inner surface of the printing cylinder, with a consequently lesser dirtying of the blade.
  • the lids closing the holes 41 are also removed during washing so that the washing water can flow directly toward the outside.
  • the invention achieves the proposed aims, and in particular the fact is stressed that the particular arrangement of the nozzles allows to completely wash all the cylinder's internal regions.
  • Another important aspect is furthermore constituted by the fact that since the blade's color discharge ports are proximate to the inner surface of the cylindrical printing body, the dirtying of its outer surface is reduced significantly.
  • the coaxial arrangement of the coupling inlets for color feed and of the inlet coupling for the washing water furthermore allows to simplify all the connections.
  • the materials employed may be any according to the requirements.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Screen Printers (AREA)

Claims (8)

  1. Cylindre d'impression avec moyens de lavage, particulièrement pour des machines d'impression rotatives,
    caractérisé en ce qu'il comprend un corps cylindrique (1) à l'intérieur duquel il s'étend une barre d'alimentation en encre (2) qui est munie d'une entrée de couplage (3) agencée à l'extérieur dudit corps cylindrique (1), ladite barre étant adaptée pour amener l'encre sur un racloir (10) qui agit sur la surface interne dudit corps cylindrique, une chambre d'alimentation en eau de lavage (20) étant définie autour de ladite barre, ladite chambre étant reliée à un raccord d'entrée (21) qui est agencé à l'extérieur dudit corps cylindrique, ladite chambre présentant une première pluralités de buses (30) pour amener l'eau de lavage vers ledit racloir et une seconde pluralité de buses (35) pour amener l'eau de lavage vers les têtes (40) dudit corps cylindrique.
  2. Cylindre d'impression, selon la revendication 1,
    caractérisé en ce qu'une pluralité de canaux (11) s'étendent de ladite barre d'alimentation en encre (2), lesdits canaux étant agencés transversalement dans ledit racloir (10) et s'achevant à proximité de la surface interne dudit corps cylindrique (1) afin d'amener l'encre.
  3. Cylindre d'impression, selon les revendications précédentes,
    caractérisé en ce que ladite chambre d'alimentation en eau de lavage (20) est essentiellement sous la forme d'un secteur annulaire qui est coaxial à ladite barre d'alimentation en encre (2) et entoure ladite barre à l'exception de la partie dans laquelle ledit racloir (10) s'étend.
  4. Cylindre d'impression, selon une ou plusieurs revendications précédentes,
    caractérisé en ce que ladite première pluralité de buses (30) s'étend longitudinalement par rapport audit racloir (10) et est prévue sur la face avant dudit racloir et sur la face arrière de celui-ci.
  5. Cylindre d'impression, selon une ou plusieurs revendications précédentes,
    caractérisé en ce que ladite seconde pluralité de buses (35) est prévue sensiblement aux extrémités axiales de ladite chambre d'alimentation en eau de lavage (20).
  6. Cylindre d'impression, selon une ou plusieurs revendications précédentes,
    caractérisé en ce que ladite entrée de couplage (3) et ledit raccord d'entrée (21) sont mutuellement coaxiaux.
  7. Cylindre d'impression selon une ou plusieurs revendications précédentes,
    caractérisé en ce que lesdites têtes (40) sont munies d'une pluralité de trous (41) qui présentent au moins une partie de bord à fleur de la surface interne dudit corps cylindrique pour évacuer l'eau de lavage.
  8. Cylindre d'impression selon une ou plusieurs revendications précédentes,
    caractérisé en qu'il comprend un couvercle pour la fermeture amovible desdits trous (41) prévus sur lesdites têtes (40).
EP89119161A 1988-10-20 1989-10-16 Cylindre d'impression avec dispositif de nettoyage, en particulier pour presses rotatives Expired - Lifetime EP0364918B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8822376A IT1230574B (it) 1988-10-20 1988-10-20 Cilindro di stampa con mezzi di lavaggio particolarmente per macchine rotative da stampa
IT2237688 1988-10-20

Publications (3)

Publication Number Publication Date
EP0364918A2 EP0364918A2 (fr) 1990-04-25
EP0364918A3 EP0364918A3 (fr) 1991-05-02
EP0364918B1 true EP0364918B1 (fr) 1994-08-31

Family

ID=11195435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119161A Expired - Lifetime EP0364918B1 (fr) 1988-10-20 1989-10-16 Cylindre d'impression avec dispositif de nettoyage, en particulier pour presses rotatives

Country Status (4)

Country Link
EP (1) EP0364918B1 (fr)
AT (1) ATE110634T1 (fr)
DE (1) DE68917844D1 (fr)
IT (1) IT1230574B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0494339A1 (fr) * 1991-01-08 1992-07-15 REGGIANI MACCHINE S.p.A. Appareil pour le nettoyage automatique d'unités d'impression, en particulier pour machines rotatives d'impression à tambour
EP0865920A2 (fr) * 1997-03-18 1998-09-23 Ichinose International Incorporated Presse rotative sérigraphique à imprimer sur tissus
NL1010337C2 (nl) * 1998-10-16 2000-04-18 Stork Brabant Bv Zeefdrukinrichting met drukpositieafscherming.
EP0993949A1 (fr) * 1998-10-16 2000-04-19 Stork Brabant B.V. Dispositif pour imprimer du pochoir avec un couvercle pour un poste d'impression

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101766C1 (de) * 1981-01-21 1982-09-09 Saueressig Gmbh, 4422 Ahaus Rotationssiebdruckvorrichtung
IT1218124B (it) * 1987-02-03 1990-04-12 Reggiani Macchine Spa Procedimento e relativa apparecchiatura per il lavaggio automatico,direttamente in macchina,di tutti i componenti le unita' di stampa per macchine da stampa a cilindri rotanti

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0494339A1 (fr) * 1991-01-08 1992-07-15 REGGIANI MACCHINE S.p.A. Appareil pour le nettoyage automatique d'unités d'impression, en particulier pour machines rotatives d'impression à tambour
EP0865920A2 (fr) * 1997-03-18 1998-09-23 Ichinose International Incorporated Presse rotative sérigraphique à imprimer sur tissus
NL1010337C2 (nl) * 1998-10-16 2000-04-18 Stork Brabant Bv Zeefdrukinrichting met drukpositieafscherming.
EP0993949A1 (fr) * 1998-10-16 2000-04-19 Stork Brabant B.V. Dispositif pour imprimer du pochoir avec un couvercle pour un poste d'impression
US6431064B1 (en) 1998-10-16 2002-08-13 Stork Brabant B.V. Screen-printing device with printing-station shield

Also Published As

Publication number Publication date
EP0364918A2 (fr) 1990-04-25
DE68917844D1 (de) 1994-10-06
ATE110634T1 (de) 1994-09-15
IT1230574B (it) 1991-10-28
IT8822376A0 (it) 1988-10-20
EP0364918A3 (fr) 1991-05-02

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