EP0352483A2 - Machine d'impression flexographique - Google Patents

Machine d'impression flexographique Download PDF

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Publication number
EP0352483A2
EP0352483A2 EP89111563A EP89111563A EP0352483A2 EP 0352483 A2 EP0352483 A2 EP 0352483A2 EP 89111563 A EP89111563 A EP 89111563A EP 89111563 A EP89111563 A EP 89111563A EP 0352483 A2 EP0352483 A2 EP 0352483A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
printing
drive
web
printing form
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.)
Granted
Application number
EP89111563A
Other languages
German (de)
English (en)
Other versions
EP0352483A3 (fr
EP0352483B1 (fr
Inventor
Wolfgang Ertl
Erwin Melischko
Otto Schmidt
Hans Schadl
Hermann Ermer
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.)
Heidelberg Web Carton Converting GmbH
Original Assignee
BHS Bayerische Berg Hutten und Salzwerke AG
BHS Druck und Veredelungstechnik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6359758&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0352483(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BHS Bayerische Berg Hutten und Salzwerke AG, BHS Druck und Veredelungstechnik GmbH filed Critical BHS Bayerische Berg Hutten und Salzwerke AG
Publication of EP0352483A2 publication Critical patent/EP0352483A2/fr
Publication of EP0352483A3 publication Critical patent/EP0352483A3/fr
Application granted granted Critical
Publication of EP0352483B1 publication Critical patent/EP0352483B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices

Definitions

  • the invention relates to a flexographic printing machine, in particular a multicolor flexographic printing machine, according to the preamble of claim 1.
  • the impression cylinder on the one hand and the printing form cylinder pressing the web to be printed against the impression cylinder are driven by a common drive train, the two cylinders being connected to one another via gear wheels. Both cylinders must be at the pressure point, i.e. at their point of contact, at which the printing form cylinder against the web is pressed, have the same peripheral speed. To ensure this, the diameter of the printing form cylinder is always identical to the pitch circle diameter of the gear wheel assigned to the printing form cylinder. If any format length changes occur, then the diameter of the printing form cylinder must be changed accordingly, since the format length is equal to the circumferential extent of the printing form cylinder.
  • the impression cylinder and impression cylinder together with the associated gears must be replaced. This is not feasible for cost reasons. If in each case the impression cylinder is to remain unchanged, changes in the diameter of the printing form cylinder are only possible in accordance with the tooth pitch of the gear wheels coupling the impression cylinder with the printing form cylinder. If, for example, the tooth pitch is 5 mm, then only format length changes in steps of 5 mm are possible, ie only diameter changes of the printing form cylinder are possible in steps of approximately 1.6 mm.
  • the printing rollers of several printing units arranged one behind the other are driven by a common drive train.
  • the web to be printed is pressed with a so-called pressurizer, a pressure roller, with high force against the gravure roller made of steel.
  • pressurizer a so-called pressurizer
  • pressure roller a pressure roller
  • high force against the gravure roller made of steel These pressers need not be driven. Because of the pressure sensitivity of the printing form cylinders of a flexographic printing machine, such a solution cannot be considered for the generic machine.
  • a rotary rotary flexographic printing press which has one or more printing form cylinders, each of which is assigned two impression cylinders.
  • Each printing unit formed in this way has its own drive.
  • a drive that is completely independent of the drive of the respective printing unit is provided for the web to be printed.
  • the impression cylinders, each associated with a printing form cylinder, and additional guide rollers for the web to be printed, make it possible for the web to come into engagement with the printing form cylinder only at the points at which the respective impression cylinder is located.
  • the invention is therefore based on the object of designing a flexographic printing machine, in particular a multi-color flexographic printing machine, of the generic type in such a way that a continuous adaptation to changes in format length is possible with simple means.
  • the measures according to the invention make it possible for printing form cylinders of any diameter to be used to adapt to changes in format length, without the impression cylinder and a possibly still actuating positioning cylinder having to be exchanged.
  • the drive train of the impression cylinder gives the reference variable.
  • the synchronization control can take place via corresponding continuously variable transmissions in at least one drive train.
  • the advantageous further development according to claim 2 is particularly simple.
  • the multi-color flexographic printing machine shown in the drawing has several basically identical printing units 1, 1 ', 1 ⁇ .
  • Each printing unit has a printing form cylinder 2 to which the printing form is attached.
  • the printing form cylinder 2 bears against a raster cylinder 3, by means of which 4 color is transferred to the printing form cylinder 2 from an ink container.
  • the printing form cylinder 2 is also in contact with an impression cylinder 5, against which in turn a contact cylinder 6, for example of the same diameter, bears.
  • the impression cylinder 5 and the raster cylinder 3 are coupled to one another in terms of drive.
  • the first printing unit 1 is preceded by a so-called web inlet train group 7, from which a web in the form of a roll 8 of material to be printed, for example paper, plastic film, metal foil, metal-laminated paper web or the like, is drawn off.
  • This web 9 is guided via a deflection roller 10 and a dancer roller 11 to a pair of take-off rollers 12 which consist of a transport roller 14 driven by a motor 13 and a counterpressure roller 15 pressing the web 9 against the transport roller 14 and thus ensuring transport consists.
  • the web 9 is guided to the first printing unit 1, where it is guided around the positioning cylinder 6 and between the positioning cylinder 6 and the impression cylinder 5 around the latter. It is pressed by the impression cylinder 5 against the printing form cylinder 2, the image on the printing form cylinder 2 being transferred to the web 9 when the printing form cylinder 2 and the impression cylinder 5 are rotated accordingly.
  • the web 9 then runs via a register cylinder 16 to the second printing unit 1 'through which the web 9 is guided in the same way.
  • the register cylinder 16 is used to adjust the web length between two adjacent printing units 1, 1 'so that a register-correct printing takes place in the successive printing units 1, 1'. From there it runs again via a register cylinder 16 to the next printing unit 1 ⁇ , through which it is also guided in the same way. This continues as often as there are printing units. From the last printing unit 1 ⁇ , the web 9 is guided to a web discharge train group 17. This Bru-Auslaufzuen 17 corresponds in its structure to the Bru-Einlaufzugen 7.
  • a single drive train 19 which consists of an electric drive motor 20 and several this in series downstream reduction and deflection gear 21, which are connected via drive shafts 22 so that all gears 21 are driven in the same way.
  • Each transmission 21 is connected via an output shaft 23 with the printing form cylinder 2 of a printing unit 1 or 1 'or 1 ⁇ drive.
  • the respective output shaft 23 is accordingly at the same time the drive shaft of the corresponding printing form cylinder 2.
  • All impression cylinders 5 are driven by a second drive train 24, which likewise has a drive motor 25 and a reduction and deflection gear 26 arranged downstream thereof. They are connected in series with one another and connected to one another via drive shafts 27. From each gear 26, an output shaft 28 is guided to the corresponding impression cylinder 5 of a printing unit 1 or 1 'or 1', for the drive it serves.
  • the printing form cylinder 2 on the one hand and the impression cylinder 5 on the other hand of each printing unit 1 or 1 'or 1' are driven by a separate drive train 19 or 24.
  • the two drive motors 20 and 25 are coupled to one another via a digital synchronous control 29, the drive train 24 driving the counter-pressure cylinders 5 providing the reference variable.
  • the drive motor 25 with a conventional one with the Provided motor shaft coupled rotary pulse generator 30, which emits a predetermined number of pulses per revolution of the shaft of the drive motor 25. These are fed to a control device 31, where they are converted into control pulses for the drive motor 20.
  • This is also provided with a rotary pulse generator 32, which uses its corresponding pulses to give an actual speed feedback to the control device 31.
  • the drive motor 20 adheres exactly to a speed which is in a fixed relationship to the speed of the drive motor 25 which can be predetermined via the control device 31.
  • the drive speeds of all impression cylinders 5, on the one hand, and all printing form cylinders 2, on the other hand are exactly in a predetermined relationship to one another, which is selected such that the peripheral speeds of the printing form cylinders 2 and the impression cylinder 5, on the other hand, are each identical, so that at the respective pressing point 33 , in which the web 9 is pressed by the respective impression cylinder 5 against the respective printing form cylinder 2, no slip occurs.
  • the impression cylinder 5 does not need to be replaced.
  • Digital synchronization controls 29 are commercially available. They are manufactured, for example, by Siemens AG, Kunststoff, Federal Republic of Germany, and sold under the name "digital controller A8.302 (A8.301) for speed, position and synchronous control”.
  • the gearboxes 21 and 26 need not be designed as a continuously variable control gearbox. Rather, they can have a fixed reduction ratio, since the entire adaptation to different speed ratios between printing form cylinders 2 on the one hand and counter-pressure cylinders 5 on the other hand can be carried out via the control device 31 of the synchronous control 29.
  • FIG. 1 the multicolor flexographic printing machine shown only schematically in FIG. 1 is shown in a longitudinal side view and a partial sectional view. 2 and 3, identical reference numerals are used for the same parts, to which only an "a” is added. In this respect, a new description is usually not necessary.
  • the drive trains 19, 24 are not shown in FIG. 2.
  • each printing unit 1a, 1'a and 1 ⁇ a is housed in its own frame 36, 37, 38. All are arranged one behind the other in the working direction 39.
  • Each printing unit 1a, 1'a, 1 ⁇ a is followed by a dryer 40 through which the web 9a is guided in order to evaporate the solvent of the printing ink.
  • the respective dryer 40 is then followed by a cooling cylinder 41, over which the web 9a heated in the dryer 40 is guided.
  • the cylinders of a printing unit 1'a - and all printing units 1a and 1 ⁇ a which are identical in this respect - are mounted in opposing frame walls 42, 43.
  • the bearings 44 of the printing form cylinder 2a are arranged in carriages 45 which are vertically displaceable in corresponding guides 46 in the frame walls 42, 43. They can be displaced parallel to one another by means of an infeed drive 47, for example in the form of a hand crank wheel, via deflecting gear 48 and spindles 49, as a result of which the printing form cylinder 2a is fed against the impression cylinder 5a or is lifted off the latter.
  • the output shaft 23a is designed as a cardan shaft. For this purpose, it is connected on the one hand to an output pin 51 of the transmission 21a and, on the other hand, to a shaft pin 52 of the printing form cylinder 2a, each via an articulated coupling 53 or 54.
  • a drive gear 55 is rotatably mounted on the output shaft 28a for the impression cylinder 5a, via which the Ra not recognizable in Fig. 3 Ster cylinder 3a is driven.
  • a vibration-damping clutch 56 is connected in the output shaft 28a.
  • the gears 21a and 26a are arranged one on top of the other and are supported by a holding arm 57 against a frame wall 43.
  • the drive trains 19a and 24a are thus also supported and fixed as a whole with respect to the frames 36, 37, 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
EP89111563A 1988-07-28 1989-06-24 Machine d'impression flexographique Expired - Lifetime EP0352483B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825652 1988-07-28
DE3825652A DE3825652A1 (de) 1988-07-28 1988-07-28 Flexodruckmaschine

Publications (3)

Publication Number Publication Date
EP0352483A2 true EP0352483A2 (fr) 1990-01-31
EP0352483A3 EP0352483A3 (fr) 1991-01-02
EP0352483B1 EP0352483B1 (fr) 1994-11-09

Family

ID=6359758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111563A Expired - Lifetime EP0352483B1 (fr) 1988-07-28 1989-06-24 Machine d'impression flexographique

Country Status (4)

Country Link
EP (1) EP0352483B1 (fr)
JP (1) JPH0286445A (fr)
DE (2) DE3825652A1 (fr)
ES (1) ES2065947T3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672525A1 (fr) * 1994-03-14 1995-09-20 A.V. Flexologic B.V. Dispositif pour imprimer des épreuves
FR2735067A1 (fr) * 1995-06-07 1996-12-13 Komori Chambon Machine d'impression rotative a format variable, notamment du type flexographique.
EP0788879A1 (fr) 1996-02-09 1997-08-13 Bobst S.A. Machine d'impression rotative
FR2759629A1 (fr) * 1997-02-18 1998-08-21 Christian Rebeyrol Machine d'impression flexographique
EP1494859A4 (fr) * 2002-03-27 2006-05-17 Joseph B Schutte Iii Presse a imprimer associant l'impression flexographique et l'impression en creux et systeme d'exploitation correspondant
CN100393510C (zh) * 2005-03-15 2008-06-11 东莞东运机械制造有限公司 凹版打样机
CN100393511C (zh) * 2005-03-15 2008-06-11 东莞东运机械制造有限公司 一种凹版打样机
EP2103429A1 (fr) 2008-03-10 2009-09-23 Gallus Druckmaschinen GmbH Elément et presse d'impression avec changement du format
EP2042315A3 (fr) * 2007-09-25 2011-07-20 Gallus Druckmaschinen GmbH Unité d'impression et machine d'impression
CZ304919B6 (cs) * 2013-06-17 2015-01-21 Soma Spol. S R.O. Uspořádání flexotiskového stroje s centrálním protitlakým válcem

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611560A1 (de) * 1996-03-23 1997-09-25 Koenig & Bauer Albert Ag Vorrichtung und Verfahren zum Transportieren von Bogen
JP3357074B2 (ja) * 1996-08-09 2002-12-16 ケーニツヒ ウント バウエル アクチエンゲゼルシヤフト 胴駆動装置
DE19805898C2 (de) * 1998-02-13 2003-09-18 Roland Man Druckmasch Druckwerk für eine Rollenrotationsdruckmaschine
DE10014040B4 (de) * 1999-11-23 2005-07-21 Koenig & Bauer Ag Welle zum Synchronisieren einer Stellbewegung
DE10066156B4 (de) * 1999-11-23 2005-11-17 Koenig & Bauer Ag Welle zum Synchronisieren einer Stellbewegung
CN100519183C (zh) 2001-04-09 2009-07-29 柯尼格及包尔公开股份有限公司 印刷机的印刷装置
ATE434520T1 (de) 2001-04-09 2009-07-15 Koenig & Bauer Ag Druckwerk einer druckmaschine
ATE427215T1 (de) * 2006-12-14 2009-04-15 Bobst Sa Kupplungsvorrichtung fur den antrieb eines zylinders einer druckvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428288A (en) * 1982-04-26 1984-01-31 Harper Corporation Of America Adjustable drive system for matching surface speeds of a transfer roll and plate roll and method thereof
GB2149149A (en) * 1983-10-28 1985-06-05 Rockwell Graphic Syst Printing press synchronization
JPS60137651A (ja) * 1983-12-09 1985-07-22 Rengo Co Ltd 印刷方法
IT1204804B (it) * 1986-02-17 1989-03-10 Cerutti Spa Off Mec Unita' di stampa supplementare del tipo flessografiche

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672525A1 (fr) * 1994-03-14 1995-09-20 A.V. Flexologic B.V. Dispositif pour imprimer des épreuves
NL9400397A (nl) * 1994-03-14 1995-10-02 Anderson & Vreeland Bv Inrichting voor het maken van proefdrukken.
US5485782A (en) * 1994-03-14 1996-01-23 Av Flexologic B.V. Apparatus for printing proofs
FR2735067A1 (fr) * 1995-06-07 1996-12-13 Komori Chambon Machine d'impression rotative a format variable, notamment du type flexographique.
WO1996040521A1 (fr) * 1995-06-07 1996-12-19 Komori-Chambon S.A. Machine d'impression rotative a format variable, notamment du type flexographique
EP0788879A1 (fr) 1996-02-09 1997-08-13 Bobst S.A. Machine d'impression rotative
US5771805A (en) * 1996-02-09 1998-06-30 Bobat Sa Rotating printing machine
WO1998036909A1 (fr) * 1997-02-18 1998-08-27 Saint-Eloi Mecanique Outillage Machine d'impression flexographique
FR2759629A1 (fr) * 1997-02-18 1998-08-21 Christian Rebeyrol Machine d'impression flexographique
EP1494859A4 (fr) * 2002-03-27 2006-05-17 Joseph B Schutte Iii Presse a imprimer associant l'impression flexographique et l'impression en creux et systeme d'exploitation correspondant
US7542175B2 (en) 2002-03-27 2009-06-02 Sekuworks, Llc Combined flexographic and intaglio printing press and operating system therefor
US7916355B2 (en) 2002-03-27 2011-03-29 Sekuworks, Llc Combined flexographic and intaglio printing press and operating system therefor
CN100393510C (zh) * 2005-03-15 2008-06-11 东莞东运机械制造有限公司 凹版打样机
CN100393511C (zh) * 2005-03-15 2008-06-11 东莞东运机械制造有限公司 一种凹版打样机
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
EP2103429A1 (fr) 2008-03-10 2009-09-23 Gallus Druckmaschinen GmbH Elément et presse d'impression avec changement du format
US8499691B2 (en) 2008-03-10 2013-08-06 Gallus Druckmaschinen Gmbh Printing unit, printing press and process for producing labels in a printing press
CZ304919B6 (cs) * 2013-06-17 2015-01-21 Soma Spol. S R.O. Uspořádání flexotiskového stroje s centrálním protitlakým válcem

Also Published As

Publication number Publication date
DE3825652A1 (de) 1990-02-01
EP0352483A3 (fr) 1991-01-02
DE58908621D1 (de) 1994-12-15
EP0352483B1 (fr) 1994-11-09
JPH0286445A (ja) 1990-03-27
ES2065947T3 (es) 1995-03-01

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