WO1998036909A1 - Machine d'impression flexographique - Google Patents
Machine d'impression flexographique Download PDFInfo
- Publication number
- WO1998036909A1 WO1998036909A1 PCT/FR1998/000309 FR9800309W WO9836909A1 WO 1998036909 A1 WO1998036909 A1 WO 1998036909A1 FR 9800309 W FR9800309 W FR 9800309W WO 9836909 A1 WO9836909 A1 WO 9836909A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- presser
- printing
- strip
- roller
- called
- Prior art date
Links
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
- B41F13/02—Conveying or guiding webs through presses or machines
-
- 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 printing machines, and more particularly rotary flexographic printing machines, and relates to a machine of this type.
- the technique of flexographic printing consists in continuously scrolling a strip-shaped support in a succession of printing groups; to each of these, a respective color is printed on the support, by means of a plate supported by a rotary drum and previously inked.
- the successive inking of the support jointly draw at the end of the chain a pattern reproduced along the strip.
- Printing machines are thus known which, in general, consist of a plurality of successive work stations, comprising the so-called printing groups and belt drive groups arranged upstream and downstream of all the groups of 'impression, so as to scroll the support successively in the latter.
- the printing units each comprise a plurality of rollers, rotatable or mounted freely rotating according to various embodiments, including a plate roller against which the strip is applied by means of a pressure roller, and a roller, called “anilox ", inking the plate holder; the drive groups for their part, called respectively of call and tension, each comprise at least one rotary roller, called call, against which the strip is compressed for its drive. Return rollers, called bar feeders, are placed at the entry and exit of each of the work stations, in particular to orient the strip from one to the other of these.
- the rollers of all of the printing units are routinely driven in rotation from at least one common motor member, so as to obtain such a multi-year drive of the rollers.
- the aniloxes are rotated together from a first line of the drive shaft, while the take-up rollers, plate holders and pressers are rotated together from a second line of the drive shaft.
- certain machines comprise a single line of motor shaft for the joint drive of the anilox on the one hand, and take-up rollers, plate holders and pressers on the other hand, declutching means allowing nevertheless to break the rotational drive of the latter while the rotational drive of the anilox continues, in order to maintain the bubbling of the latter in their respective ink reservoir.
- a technician-operator makes adjustments to each of the printing groups:
- a first type of adjustment consists in adjusting the contact, or key, of the different rollers with one another, and in particular between the anilox and the plate holder for the transfer of ink on the one hand, and between the presser, the strip and the plate holder on the other hand.
- a difficulty posed lies in the fact that the adjustment of the inking and printing keys is effected by a displacement of the rollers towards one another.
- said rollers are driven for each of the printing units by means of a cascade gear, from the drive pinion of one of the rollers. The operator must therefore take into account the different clearances between the pinions when adjusting the keys, by estimating their impact on the result of the printing.
- a second type of adjustment consists in positioning the plate of each of the printing groups with respect to the strip, so as to obtain a pattern at the end of the chain without any offset between the colors successively deposited.
- This type of adjustment is carried out for example by means of a differential interposed between the motor shaft and the plate holder, so as to temporarily modify the speed of rotation of the plate holder in order to "put in phase” the picture of the group of printing being adjusted with the printing obtained with the other printing units, until a faultless pattern is obtained.
- a difficulty posed lies in the fact that the belt tension between the different rolls of. the machine is not identical and is difficult to control.
- the tension of the strip tends to vary and to be passed on from one printing group to another, depending on the sliding forces of the strip on the various rollers without possible control by the operator.
- a slackening of the strip occurs during the reel change and the resulting key adjustments.
- the object of the invention is therefore to propose a flexographic printing machine, the structure of which facilitates the operations of adjusting the key and setting the impression by the operator, by limiting the influence of the above-mentioned uncertainty factors.
- the inventive step consisted in breaking the habits taken in the field, and in substituting for the said call and tension groups, means of driving the strip specific to each of the printing groups, so that the tension of the strip in each of the printing groups is its own and does not undergo untimely variations due to the passage of the strip in a previous and / or next printing group.
- Said means for driving the strip advantageously consist of means for applying the strip against at least any one of the already existing rollers of the printing unit, which is rotated by positive transmission members which are preferably specific to it, that is to say transmission members in direct engagement with transmission means motors, in particular so as not to be influenced by variations in the speed of the plate holder when setting the print.
- said motorized roller against which the strip is applied is at least any of the bar feeders of the printing unit; however, and pursuing their inventive approach, the Applicants propose to use the pressure roller as a belt drive roller, and to provide the latter with rotation drive means comprising positive transmission members which are specific to it, c '' is to say for example from a transmission pinion directly driven by a motor shaft connected to the drive shaft line of the machine rollers, and not from a pinion participating in a gear in cascade in which a pinion drive in rotation of the plate holder and / or of the Anilox would participate, as in the prior art.
- FIG.l is a schematic representation overview of a flexographic printing machine according to the prior art
- FIG. 2 is a schematic overall representation of a flexographic printing machine according to a preferred embodiment
- FIG. 3 is a schematic view of a group of printing of the same machine
- fig.4 is a schematic perspective view of the same printing group, illustrating the means for rotating the various rollers relating thereto.
- a flexographic printing machine comprises a plurality of printing groups, such as 2, and call and voltage groups 48 and 50 arranged downstream and upstream of all of the groups d printing 2.
- the call and tension groups 48 and 50 comprise means, such as 78 and 80, called call and tension, for scrolling under tension and successively in each of the printing groups 2 a medium to print 8 packaged in strip.
- Each printing unit comprises a set of parallel rollers: a first roller 10, called anilox, is intended for inking a plate supported around a second roller 12, said plate holder, for inking support 8; a third roller 14, said presser, is intended to apply the strip 8 against the plate holder 12; finally, a set of at least two fourth rollers 20,18, called input and output 20 feeders respectively 18 for that arranged upstream and that disposed downstream of the presser 14, are provided to orient the strip 8 to the inside printing group 2 and between two neighboring printing groups 2.
- the anilox 10 and at least any one of the plate holder 12 and the presser 14 are displaceable (arrows 1,3 and 5 respectively) relative to each other for the purpose of adjusting the contact, or key, between the anilox 10 and the plate holder 12 on the one hand for taking ink from the plate, and between the presser 14, the support 8 and the plate holder 12 on the other hand for transferring ink from the plate to support 8.
- the anilox 10, the plate holder 12 and the presser 14 are rotated by means of at least one line of drive shaft 24 and 26 common to all the printing units, by means of a set of positive transmission members comprising means 76, called phase adjustment means, such as differential, making it possible to modify momentarily the speed of rotation of a plate holder 12 relative thereto in order to effect the "setting of the impression" .
- phase adjustment means such as differential
- each of the pressers 14 is carried out by means of a cascade gear from the drive members of the plate holder 12 relating thereto.
- the plate holder 12 and incidentally the presser 14 are rotated from the gearbox d training of the anilox 10.
- the inventive step of the present invention consisted in replacing the call and tension groups 48 and 50, which become superfluous in a machine of the invention, with call and tension means 4,6 and 52 of the strip 8 to be printed equipping each of the printing groups 2.
- These call and tensioning means 4,6 and 52 comprise at least a fifth roller 4, said to be of support, displaceable (arrow 7 ) in the direction of a motorized roller of the printing unit 2, the said motorized roller being any one of the rollers of the group of rollers comprising the presser 14 and the bar feeders 20,16,18,22, so that the band 8 is held in each of the printing groups 2 to prevent it from sliding on the different rollers, and finally that the variations in tension of the band 8, and therefore of band length, inside a group of print 2 are not passed on to the next print group 2.
- said support roller 4 is, as usual in the field, consisting of a roller coated with a flexible material , especially rubber.
- the means for moving the support roller 4 comprise a carriage 52, said to be first, displaceable by a power member 6, in particular a jack, the pressure exerted by the support roller 4 against the strip 8 towards the said motorized roller 14 or 16 or 18 or 20 or 22, and the stroke of the power member 6 being predetermined. It will also be noted that the support roller 4 is incidentally driven in rotation from the transmission members of the presser 14.
- said motorized roller is constituted by pressure roller 14, which is rotated by motor means comprising a line of drive shaft 24, called first , coupled to positive transmission members, 28 and 30 for example, called prime, specific to the presser 14, that is to say transmission 28.30 distinct from those, for example 32,34,36 and 74 or 38,40,42, for driving in rotation any one at least of the plate holder 12 and the anilox 10, and in particular transmission members 28 and 30 which are not placed under the influence of said phase adjustment means 76 of the plate holder 12.
- motor means comprising a line of drive shaft 24, called first , coupled to positive transmission members, 28 and 30 for example, called prime, specific to the presser 14, that is to say transmission 28.30 distinct from those, for example 32,34,36 and 74 or 38,40,42, for driving in rotation any one at least of the plate holder 12 and the anilox 10, and in particular transmission members 28 and 30 which are not placed under the influence of said phase adjustment means 76 of the plate holder 12.
- the means for moving the presser 14 preferably comprise a carriage 54, said second, guided in translation on a frame 56 of the machine, said second carriage 54 supporting at least the presser 14 and the support roller 4 with its means 6,52 for guiding and moving in the direction of the presser 14, and preferably those of the said input and output bar feeders 16 and 18 placed in the vicinity of the presser 14, directly upstream and downstream thereof 14.
- the input feeder 16, called a rectifier, disposed immediately upstream of the presser 14 is preferably placed, firstly between the presser 14 and the output feeder 18 arranged immediately downstream of the presser 14, and in second place so that its surface covered by the band support 8 is located above the axis of the presser 14, so that the surface of the presser 14 covered by the support 8 is optimal.
- the rectifier 16 is supported by the second carriage 54, together with the presser 14, so that the strip surface 8 covering the presser 14 is constant whatever the movements of the second carriage 54, and therefore whatever the position of the presser 14 with respect to the plate holder 12, in order to avoid a shift in the position of the support to be printed 8 with respect to the ink transfer zone.
- the means of mobility of each of the plate holder 12 and anilox 10 comprise a carriage, said respectively third 58 and fourth 60, guided in translation on the frame 56 of the machine.
- the second 54, third 58 and fourth 60 carriages can be operated in translation by means of a respective power unit (not shown in the figures), in particular a hydraulic cylinder, the precise adjustment of the key being effected by an additional movement carts
- the means for rotating the plate holder 12 advantageously comprise positive transmission members 32, 34, 36, 74 and 76 for example, called second, comprising the said phase adjustment means 76, the first 28.30 and second 32.34.36.74 and 76 transmission members being coupled to the first drive shaft line 24, which is equipped with a clutch device 62 / declutching (fig. 2).
- the means for rotating the anilox 10 preferably comprise positive transmission members 38, 40, 42 for example, called third, coupled to a second line of drive shaft 26 distinct from the first drive 26 in rotation of the pressers 14 and of the plate holders 12.
- the rotational drives of the pressers 14 and of the plate holders 16 can be jointly disengaged by the device 62, while the rotational drive of the anilox 10 continues.
- the plate holders 12 are rotated from the second drive shaft line 26 for rotating the anilox 10; it will be understood that this embodiment is equivalent to that described and shown, and that it relates to the invention, since the presser 14 is driven by transmission members from a drive line 24 or 26 independently of the other rollers, that is to say so that its rotational drive is not placed under the influence of the drive of the other rollers, and more particularly of the anilox 10 and the plate holder 12, even in the case where this drive line 24 or 26 is common to all of the rollers 10, 12 and possibly 20,16,18,22 of the machine.
- the third transmission members preferably comprise a flexible positive transmission member 40 interconnecting the anilox 10 and the second line of drive shaft 26, in order to avoid shaking during the drive of the anilox 10, shaking detrimental to the uniform distribution of ink.
- the bar feeders 20, 16, 18 and 22 are rotated by motor means which are preferably not placed under the influence of said phase adjustment means 76, so that the sliding of the strip 8 on the bar feeders is negligible in order to limit the variations in strip tension inside each of the printing units 2.
- each of the bar feeders 20, 16, 18, 22 include for example positive transmission members, at least one of which is a flexible member, such as 68, preferably coupled to the first line of drive shaft 24 for driving the pressers 14 and the plate holders 12 in rotation, so as to be placed under the dependence of the said clutch / disengage means 62.
- the machine of the invention furthermore comprises at least one control and command console, such as 70, of the different motor and power units 24, 26 (displacement cylinders of the various carriages 52,54,58,60), such as 6, of the machine.
- control console 70 is placed at the outlet of the machine to allow the operator technician overall control of the printing units from this console, as shown in the figure, or, or in addition, the machine comprises several control panels 70 respective to each of the printing groups 2.
- the machine of the invention is preferably equipped, at the outlet of each of the printing units 2, with usual drying stations, such as 72, of the strip to be printed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Printing Methods (AREA)
- Rotary Presses (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Printing Plates And Materials Therefor (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69805512T DE69805512T2 (de) | 1997-02-18 | 1998-02-18 | Flexodruckmaschine |
AU65040/98A AU6504098A (en) | 1997-02-18 | 1998-02-18 | Flexographic printing machine |
AT98910787T ATE217837T1 (de) | 1997-02-18 | 1998-02-18 | Flexodruckmaschine |
EP98910787A EP0963294B1 (fr) | 1997-02-18 | 1998-02-18 | Machine d'impression flexographique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/02570 | 1997-02-18 | ||
FR9702570A FR2759629B1 (fr) | 1997-02-18 | 1997-02-18 | Machine d'impression flexographique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998036909A1 true WO1998036909A1 (fr) | 1998-08-27 |
Family
ID=9504404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000309 WO1998036909A1 (fr) | 1997-02-18 | 1998-02-18 | Machine d'impression flexographique |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0963294B1 (fr) |
AT (1) | ATE217837T1 (fr) |
AU (1) | AU6504098A (fr) |
DE (1) | DE69805512T2 (fr) |
ES (1) | ES2178178T3 (fr) |
FR (1) | FR2759629B1 (fr) |
PT (1) | PT963294E (fr) |
WO (1) | WO1998036909A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2042315A3 (fr) * | 2007-09-25 | 2011-07-20 | Gallus Druckmaschinen GmbH | Unité d'impression et machine d'impression |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007028327A1 (de) * | 2007-06-15 | 2008-12-18 | Flexicon Ag | Druckanlage sowie Verfahren zum Bedrucken von Druckträgern |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1810532A1 (de) * | 1968-11-23 | 1970-07-09 | Hueck & Co | Flexodruckmaschine zum Nachdrucken von bandfoermigem Material |
DE3344131A1 (de) * | 1983-12-07 | 1985-06-20 | Metronic Gerätebau GmbH & Co, 8702 Veitshöchheim | Flexodruckwerk fuer den verpackungsdruck |
EP0352483A2 (fr) * | 1988-07-28 | 1990-01-31 | BHS Druck- und Veredelungstechnik GmbH | Machine d'impression flexographique |
WO1994020299A1 (fr) * | 1993-03-09 | 1994-09-15 | Seroma | Dispositif de reglage d'un groupe d'une machine d'impression flexographique |
-
1997
- 1997-02-18 FR FR9702570A patent/FR2759629B1/fr not_active Expired - Fee Related
-
1998
- 1998-02-18 EP EP98910787A patent/EP0963294B1/fr not_active Expired - Lifetime
- 1998-02-18 ES ES98910787T patent/ES2178178T3/es not_active Expired - Lifetime
- 1998-02-18 AU AU65040/98A patent/AU6504098A/en not_active Abandoned
- 1998-02-18 WO PCT/FR1998/000309 patent/WO1998036909A1/fr active IP Right Grant
- 1998-02-18 PT PT98910787T patent/PT963294E/pt unknown
- 1998-02-18 AT AT98910787T patent/ATE217837T1/de not_active IP Right Cessation
- 1998-02-18 DE DE69805512T patent/DE69805512T2/de not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1810532A1 (de) * | 1968-11-23 | 1970-07-09 | Hueck & Co | Flexodruckmaschine zum Nachdrucken von bandfoermigem Material |
DE3344131A1 (de) * | 1983-12-07 | 1985-06-20 | Metronic Gerätebau GmbH & Co, 8702 Veitshöchheim | Flexodruckwerk fuer den verpackungsdruck |
EP0352483A2 (fr) * | 1988-07-28 | 1990-01-31 | BHS Druck- und Veredelungstechnik GmbH | Machine d'impression flexographique |
WO1994020299A1 (fr) * | 1993-03-09 | 1994-09-15 | Seroma | Dispositif de reglage d'un groupe d'une machine d'impression flexographique |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2042315A3 (fr) * | 2007-09-25 | 2011-07-20 | Gallus Druckmaschinen GmbH | Unité d'impression et machine d'impression |
US8505450B2 (en) | 2007-09-25 | 2013-08-13 | Gallus Druckmaschinen Gmbh | Printing unit, printing press and method of producing labels or self-adhesive labels in a printing press |
Also Published As
Publication number | Publication date |
---|---|
ES2178178T3 (es) | 2002-12-16 |
EP0963294B1 (fr) | 2002-05-22 |
AU6504098A (en) | 1998-09-09 |
ATE217837T1 (de) | 2002-06-15 |
DE69805512T2 (de) | 2003-01-09 |
DE69805512D1 (de) | 2002-06-27 |
FR2759629B1 (fr) | 1999-06-04 |
FR2759629A1 (fr) | 1998-08-21 |
EP0963294A1 (fr) | 1999-12-15 |
PT963294E (pt) | 2002-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0864421B1 (fr) | Machine d'impression avec moyen d'application d'encre échangeable | |
JP4871120B2 (ja) | 凹版印刷機 | |
AU4204196A (en) | Rotary screen printing machine for sheet printing | |
FR2553032A1 (fr) | Presse d'impression flexographique a entrainement en prise directe et materiau d'emballage ainsi imprime | |
FR2744389A1 (fr) | Groupe d'impression permettant un changement de plaques d'impression en marche | |
FR2501112A1 (fr) | Machine a imprimer rotative offset a feuilles pour la realisation a volonte d'une impression unilaterale en couleurs ou d'une impression recto-verso | |
FR2505734A1 (fr) | Presse rotative a bobines | |
US8256344B2 (en) | Methods for controlling both a first roll, which takes up a dampening agent from a dampening agent source, as well as a second roll, and dampening systems | |
FR2556280A1 (fr) | Presse d'impression a dispositif de reglage automatique de vitesse | |
FR2735419A1 (fr) | Dispositif d'entrainement direct pour une machine d'impression | |
FR2550731A1 (fr) | Machine d'impression en couleurs a reglage de l'espacement des impressions | |
FR2518455A1 (fr) | Imprimeuse flexographique | |
FR2503038A1 (fr) | Ensemble d'impression combinee a machine rotative pour impression offset de titres imprimes | |
US5511475A (en) | Printing unit for a rotary offset printing press | |
FR2501113A1 (fr) | Rotative offset a feuilles | |
WO1998036909A1 (fr) | Machine d'impression flexographique | |
EP1938972B1 (fr) | Presse d'impression offset à réglage du registre de coupe et procédé correspondant | |
FR2501111A1 (fr) | Machine a imprimer rotative offset a feuilles pour la realisation, a volonte, d'une impression unilaterale en couleurs ou d'une impression recto-verso | |
FR2550995A1 (fr) | Procede et dispositif de reglage assurant l'adaptation aux reperes et la conformite aux longueurs d'impression dans les imprimeuses flexographiques | |
US20020162465A1 (en) | Multicolor ink transfer arrangement and method | |
FR2804901A1 (fr) | Machine a imprimer offset equipee d'une commande de registres et procede pour son exploitation | |
US6848360B2 (en) | Form dampening roller driving apparatus | |
GB2098130A (en) | Apparatus for use in lithographic/or intaglio printing | |
CA2164640A1 (fr) | Dispositif de reglage d'un groupe d'une machine d'impression flexographique | |
JP4500405B2 (ja) | 孔版印刷装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998910787 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1998910787 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 1998536321 Format of ref document f/p: F |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998910787 Country of ref document: EP |