WO2012016758A1 - Ensemble d'impression, en particulier pour impressions flexographiques, à rouleau d'impression amovible - Google Patents

Ensemble d'impression, en particulier pour impressions flexographiques, à rouleau d'impression amovible Download PDF

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Publication number
WO2012016758A1
WO2012016758A1 PCT/EP2011/060607 EP2011060607W WO2012016758A1 WO 2012016758 A1 WO2012016758 A1 WO 2012016758A1 EP 2011060607 W EP2011060607 W EP 2011060607W WO 2012016758 A1 WO2012016758 A1 WO 2012016758A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
printing roller
flanged
supporting arms
printing assembly
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.)
Ceased
Application number
PCT/EP2011/060607
Other languages
English (en)
Inventor
Federico D'annunzio
Sauro Salvadori
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.)
NUOVA GIDUE Srl
Original Assignee
NUOVA GIDUE Srl
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 NUOVA GIDUE Srl filed Critical NUOVA GIDUE Srl
Priority to CN2011800378787A priority Critical patent/CN103068577A/zh
Priority to EP11728253.3A priority patent/EP2601051A1/fr
Priority to BR112013002672A priority patent/BR112013002672A2/pt
Publication of WO2012016758A1 publication Critical patent/WO2012016758A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/008—Mechanical features of drives, e.g. gears, clutches
    • 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
    • B41F13/10—Forme cylinders
    • 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
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/36—Cams, eccentrics, wedges, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/80—Means enabling or facilitating exchange of cylinders
    • B41P2213/802—Means enabling or facilitating exchange of cylinders axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/80—Means enabling or facilitating exchange of cylinders
    • B41P2213/804—Means enabling or facilitating exchange of cylinders radially

Definitions

  • the present invention relates to an improved printing assembly, particularly for flexographic prints with removable printing roller. More specifically, the invention relates to a flexographic printing assembly with a printing roller that is easy to remove from its seat and simple to lock in its seat.
  • Conventional printing assemblies for example flexographic printing presses, are provided with a plurality of cylinders, of which a first cylinder, known as the inking cylinder, is designed to be immersed in a basin of ink (not shown), in order to take on some ink, a second cylinder around which paper is rolled onto which the printing is to be executed and a third cylinder, known as the printing roller, which carries the print to be made on paper or other medium and against which both the first cylinder and the second cylinder are abutted in order to transfer the ink taken on by the first cylinder to the paper rolled around the second cylinder according to the print characters carried on the printing roller.
  • a first cylinder known as the inking cylinder
  • a fourth cylinder arranged downstream of the printing roller which pulls the printed paper from one printing assembly to a subsequent printing assembly, or which pulls the paper out at the end of the print cycle.
  • the printing roller requires frequent substitution operations in order to move from one diameter to another, according to the type of printing that needs to be performed.
  • the printing roller must be adjusted in its position with respect to the cylinder on which the print characters are carried and which is then positioned in abutment against the printing roller.
  • printing assemblies have been devised with printing rollers with simplified removal and release.
  • Such printing assemblies are constituted by a supporting framework for print cylinders comprising a pair of outer shoulders forming an adjustable cradle for supporting the printing roller, inside which a spindle is inserted that has, at at least one of its ends, a flanged element rotatably associated with the spindle and a collar element keyable onto the spindle so as to axially couple the flanged element onto the spindle supporting the cylinder.
  • means for locking the printing roller consist substantially of a locking tongue protruding from one of the two lateral shoulders, in a direction parallel to the axis of the printing roller, so as to block the rotations of the flanged element.
  • the two locking tongues are retracted, thus freeing the two flanged elements so as to vertically remove the spindle supporting the printing roller from the printing assembly.
  • a collar is rotatably fitted onto the spindle and rests on the adjustable cradle at at least one of the ends of the spindle.
  • a C-shaped element is placed above the spindle at the collar so as to lock the spindle in place.
  • the C-shaped element is taken away from the adjustable cradle and, by vertically lifting the spindle supporting the printing roller, the printing roller can be changed.
  • the aim of the present invention is to provide an improved printing assembly, particularly for flexographic prints with removable printing roller, that is easy to remove and similarly easy to lock in its operational position.
  • an object of the present invention is to provide an improved printing assembly in which the printing roller can be released and, therefore, removed with a single, simple operation, without having to dismantle fixed parts of the printing assembly.
  • Another object of the present invention is to provide an improved printing assembly in which the printing roller can be adjusted in its position with respect to the other cylinders present in the printing assembly, and specifically both vertically and horizontally.
  • Another object of the present invention is to provide an improved printing assembly in which the printing roller is easy to remove, is highly reliable, relatively easy to implement and at low cost.
  • a printing assembly particularly for flexographic prints with removable printing roller, comprising at least two lateral uprights which face each other, each one defining a lateral cradle for supporting a motorized spindle that supports a printing roller, each one of said lateral cradles comprising, at an upper portion thereof, at least one pair of supporting arms associable with the protruding ends of said motorized spindle by said printing roller, for each one of said protruding ends a collar element being provided, which is keyable onto said protruding end and associated rotatably with a flanged element that can be arranged to rest on a respective one of said pairs of supporting arms and engageable with locking means of said printing assembly for the retention of said flanged elements to rest on said pairs of supporting arms, characterized in that said collar elements are integral with said printing roller for their removal together with said printing roller from said motorized spindle.
  • Figures 1 and 3 are two perspective views of an embodiment of an improved printing assembly, particularly for flexographic prints with removable printing roller, according to the invention
  • Figure 2 is an enlarged- scale view of a detail of the view of the improved printing assembly shown in Figure 1 ;
  • Figure 4 is a cross-sectional, side elevation view of the improved printing assembly shown in Figures 1 and 3;
  • Figure 5 is an enlarged- scale view of a detail of the view of the improved printing assembly shown in Figure 4.
  • the improved printing assembly particularly for flexographic prints with removable printing roller, generally designated with the reference numeral 1, comprises a footing 2 that is integral with at least two lateral uprights 3 and 4 which face each other and which support a plurality of cylinders with mutually parallel axes.
  • a first cylinder 5, known as the inking cylinder which is designed to be immersed in a basin of ink (not shown), in order to take on some ink, a second cylinder 6, around which the paper is rolled onto which the printing is to be executed and a third cylinder 7, known as the printing roller, which carries the print to be made on paper or other medium and against which both the first cylinder 5 and the second cylinder 6 are abutted in order to transfer the ink taken on by the first cylinder 5 to the paper rolled around the second cylinder 6 according to the print characters carried on the printing roller 7.
  • Both the second cylinder 6 and the third cylinder 7 are provided with drive means 8 and 9 which are adapted to make them rotate, respectively, about their axes of rotation 6a and 7a so as to control the tensioning of the paper rolled around the second cylinder 6 during the printing process.
  • the first cylinder 5 since it only has to perform the function of transferring the ink from the collection basin to the third cylinder 7, is idle about its axis of rotation 5a and its rotation is caused by friction from the motion of the third cylinder 7 with which it is tangential.
  • the printing roller 7 needs to be continually changed so as to move from one diameter to another according to the type of print format that is to be worked with.
  • the printing roller 7 is removably fitted onto a motorized spindle 10 that is supported by two lateral cradles 11 and 12 which are defined, respectively, by the two lateral uprights 3 and 4.
  • each one of the lateral cradles 3 and 4 comprises, at an upper portion thereof, at least one pair of supporting arms 13 and 14 which are associable with the ends 10a and 10b of the motorized spindle 10 protruding from the printing roller 7.
  • a collar element 15 or 16 is provided which is keyable onto a respective protruding end 10a or 10b and rotatably associated with a respective flanged element 17 or 18 that can be arranged to rest on the respective pair of supporting arms 13 or 14.
  • the collar elements 15 and 16 are integral with the printing roller 7 for their removal, together with the printing roller 7, from the motorized spindle 10.
  • each collar element 15 and 16 defines a groove 19 on its radially inner surface, which is adapted to engage with a radially outer tongue 20 defined by the respective flanged element 17 or 18.
  • the flanged element 17 or 18 is free to rotate with respect to the respective collar element 15 or 16 while remaining axially coupled thereto in translational movements.
  • each flanged element 17 or 18 comprises a portion that is radially enlarged with respect to the respective collar element 15 or 16, and is designed to rest on a respective resting surface defined by the respective pair of supporting arms 13 or 14.
  • each pair of supporting arms 13 or 14 comprises a first arm 22 and a second arm 23 which are pivoted respectively to the respective lateral upright 3 or 4.
  • first arm 22 and the second arm 23 are mutually coupled at two ends thereof that are opposite with respect to the point of pivoting to the respective lateral upright 3 or 4 and they define the resting surface upon which the respective flanged element 17 or 18 rests.
  • Both the first arm 22 and the second arm 23 are provided with adjustment means 24 comprising, for each arm 22 and 23, at least one adjustment screw 25 which is adapted to orientate the respective arm 22 or 23 about its axis of pivoting 22a or 23a to the respective lateral upright 3 or 4.
  • the two arms 22 and 23 rotate about their axes of pivoting 22a and 23a so as to be able to move, both horizontally and vertically, the printing roller 7 which, by means of the flanged elements 17 and 18, is resting on the arms 22 and 23.
  • the flanged elements 17 and 18 are engageable with locking means 26 of the printing assembly 1, for the retention of the flanged elements 17 and 18 to rest on the pairs of supporting arms 13 and 14.
  • the locking means 26 comprise, for each flanged element 17 and 18, a slider 27 which can be engaged in at least one radial seat 28 defined by the respective flanged element 17 or 18 substantially on the opposite side with respect to the radially enlarged portion designed to rest on the respective pair of supporting arms 13 and 14.
  • each slider 27 is moveable from a position of engagement in the radial seat 28, in which the respective flanged element 17 or 18 is coupled to rest on the pair of supporting arms 13 or 14, to a position of disengagement from the radial seat 28, in which the motorized spindle 10 is removable from the printing assembly 1 , and vice versa.
  • the printing roller 7, complete with collar elements 15 and 16 and with flanged elements 17 and 18, is first lifted from the pairs of supporting arms 13 or 14, then removed from the rotating spindle 10 at the end thereof opposite with respect to the drive means 9, and then substituted by another printing roller 7 fitted with new collar elements 15 and 16 and with new flanged elements 17 and 18, these last items having dimensions corresponding to the diameter of the new printing roller 7 so as to enable its abutment with the other two cylinders 5 and 6.
  • the improved printing assembly particularly for flexographic prints with removable printing roller, according to the present invention, fully achieves the intended aim and objects in that it makes it possible to perform the change in print format simply by removing only the printing roller from the motorized spindle and thus leaving the motorized spindle in the printing assembly.
  • Another advantage of the improved printing assembly consists in that, thanks to the presence of means for adjusting and locking the printing roller, it enables simplified access to the printing roller in order to be able to remove it and subsequently reposition it, with a very rapid operation, without any changes being necessary to the adjustment of the relative position thereof with respect to the remaining cylinders, independently of the diameter of the printing roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Handling Of Sheets (AREA)

Abstract

Cette invention concerne un ensemble d'impression (1), en particulier pour impressions flexographiques, à rouleau d'impression amovible, comprenant au moins deux montants latéraux (3, 4) orientés l'un vers l'autre, chacun d'entre eux définissant un berceau latéral (11, 12) pour porter une broche motorisée (10) sur laquelle repose un rouleau d'impression (7). Chacun desdits berceaux latéraux (11, 12) comprend, sur une partie supérieure, au moins une paire de bras de support (13, 14) aptes à être associés aux extrémités (10a, 10b) de la broche motorisée (10) qui font saillie du rouleau d'impression (7). Un élément formant collier (15, 16) est utilisé pour chacune des extrémités saillantes (10a, 10b). Chacun desdits éléments formant collier (15, 16) est claveté sur l'extrémité saillante correspondante (10a, 10b) et associé en rotation à un élément à bride (17, 18) qui peut être agencé de manière à reposer sur une paire respective de bras de support (13, 14). Lesdits éléments à bride (17, 18) peuvent entrer en contact avec des moyens de blocage (26) de l'ensemble d'impression (1) qui les retiennent de manière à ce qu'ils reposent sur les paires de bras de support (13, 14). Les éléments formant collier (15, 16) font corps avec le rouleau d'impression (7) afin d'être retirés simultanément au rouleau d'impression (7) de la broche motorisée (10).
PCT/EP2011/060607 2010-08-03 2011-06-24 Ensemble d'impression, en particulier pour impressions flexographiques, à rouleau d'impression amovible Ceased WO2012016758A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2011800378787A CN103068577A (zh) 2010-08-03 2011-06-24 尤其是用于具有可移除的印刷辊的柔性版印刷的印刷组件
EP11728253.3A EP2601051A1 (fr) 2010-08-03 2011-06-24 Ensemble d'impression, en particulier pour impressions flexographiques, à rouleau d'impression amovible
BR112013002672A BR112013002672A2 (pt) 2010-08-03 2011-06-24 montagem de impressora, particularmente para impressões flexográficas com rolo de impressão removível

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2010A001471 2010-08-03
ITMI2010A001471A IT1401510B1 (it) 2010-08-03 2010-08-03 Gruppo di stampa perfezionato, particolarmente per stampe flessografiche con cilindro di stampa rimovibile.

Publications (1)

Publication Number Publication Date
WO2012016758A1 true WO2012016758A1 (fr) 2012-02-09

Family

ID=43618236

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/060607 Ceased WO2012016758A1 (fr) 2010-08-03 2011-06-24 Ensemble d'impression, en particulier pour impressions flexographiques, à rouleau d'impression amovible

Country Status (5)

Country Link
EP (1) EP2601051A1 (fr)
CN (1) CN103068577A (fr)
BR (1) BR112013002672A2 (fr)
IT (1) IT1401510B1 (fr)
WO (1) WO2012016758A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105196683A (zh) * 2015-09-23 2015-12-30 南京造币有限公司 一种轮转凸印装置
EP3115203A1 (fr) 2015-07-06 2017-01-11 Gallus Druckmaschinen GmbH Outil d'usinage destine a l'usinage rotatif
DE102016215988A1 (de) 2016-08-25 2018-03-01 Gallus Druckmaschinen Gmbh Bearbeitungswerk und Etikettendruckmaschine mit einem solchen Bearbeitungswerk
DE102016215986A1 (de) 2016-08-25 2018-03-01 Gallus Druckmaschinen Gmbh Bearbeitungswerk und Etikettendruckmaschine mit einem solchen Bearbeitungswerk

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104742495B (zh) * 2015-03-24 2017-04-19 浙江炜冈机械有限公司 机组式柔版印刷机印刷部件
CN107791662A (zh) * 2017-11-27 2018-03-13 陈涛 一种印刷用烫金机的电化铝箔串动辊定位装置
NL2023862B1 (en) * 2019-09-20 2021-05-25 Mps Holding Bv A mandrel for printing apparatus, a printing cylinder, a printing apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5370047A (en) * 1993-12-01 1994-12-06 Paper Converting Machine Company Flexographic press adapted for short runs and method
EP0911158A2 (fr) * 1997-10-21 1999-04-28 Valmet Rotomec s.p.a. Dispositif pour maintenir et enlever un cylindre d'impression rotatif sur des supports
EP1092536A1 (fr) * 1999-10-11 2001-04-18 Gi Due S.r.l. Unité d'impression avec cylindre d'impression à enlevement et blocage simplifiés
EP1285753A1 (fr) * 2001-08-07 2003-02-26 FIN-OMET S.r.l. Dispositif d'impression en particulier machine d'impression flexographique
WO2009060274A2 (fr) * 2007-11-07 2009-05-14 Omet S.R.L. Cylindre destiné à des machines d'impression offset

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4012141B2 (ja) * 2003-12-09 2007-11-21 株式会社小森コーポレーション 版排出装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5370047A (en) * 1993-12-01 1994-12-06 Paper Converting Machine Company Flexographic press adapted for short runs and method
EP0911158A2 (fr) * 1997-10-21 1999-04-28 Valmet Rotomec s.p.a. Dispositif pour maintenir et enlever un cylindre d'impression rotatif sur des supports
EP1092536A1 (fr) * 1999-10-11 2001-04-18 Gi Due S.r.l. Unité d'impression avec cylindre d'impression à enlevement et blocage simplifiés
EP1285753A1 (fr) * 2001-08-07 2003-02-26 FIN-OMET S.r.l. Dispositif d'impression en particulier machine d'impression flexographique
WO2009060274A2 (fr) * 2007-11-07 2009-05-14 Omet S.R.L. Cylindre destiné à des machines d'impression offset

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3115203A1 (fr) 2015-07-06 2017-01-11 Gallus Druckmaschinen GmbH Outil d'usinage destine a l'usinage rotatif
DE102015212572A1 (de) 2015-07-06 2017-01-12 Gallus Druckmaschinen Gmbh Bearbeitungswerk zur rotativen Bearbeitung
CN105196683A (zh) * 2015-09-23 2015-12-30 南京造币有限公司 一种轮转凸印装置
DE102016215988A1 (de) 2016-08-25 2018-03-01 Gallus Druckmaschinen Gmbh Bearbeitungswerk und Etikettendruckmaschine mit einem solchen Bearbeitungswerk
DE102016215986A1 (de) 2016-08-25 2018-03-01 Gallus Druckmaschinen Gmbh Bearbeitungswerk und Etikettendruckmaschine mit einem solchen Bearbeitungswerk
US10286647B2 (en) 2016-08-25 2019-05-14 Gallus Druckmaschien GmbH Processing unit and label printing machine having the processing unit
US10449757B2 (en) 2016-08-25 2019-10-22 Gallus Druckmaschinen Gmbh Processing unit and label printing machine having the processing unit

Also Published As

Publication number Publication date
CN103068577A (zh) 2013-04-24
IT1401510B1 (it) 2013-07-26
EP2601051A1 (fr) 2013-06-12
ITMI20101471A1 (it) 2012-02-04
BR112013002672A2 (pt) 2016-05-31

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