EP1036657A2 - Dispositif de mouillage pour une machine à imprimer - Google Patents

Dispositif de mouillage pour une machine à imprimer Download PDF

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Publication number
EP1036657A2
EP1036657A2 EP00104434A EP00104434A EP1036657A2 EP 1036657 A2 EP1036657 A2 EP 1036657A2 EP 00104434 A EP00104434 A EP 00104434A EP 00104434 A EP00104434 A EP 00104434A EP 1036657 A2 EP1036657 A2 EP 1036657A2
Authority
EP
European Patent Office
Prior art keywords
roller
dampening unit
unit according
axis
dampening
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
EP00104434A
Other languages
German (de)
English (en)
Other versions
EP1036657A3 (fr
EP1036657B1 (fr
Inventor
Peter Heiler
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1036657A2 publication Critical patent/EP1036657A2/fr
Publication of EP1036657A3 publication Critical patent/EP1036657A3/fr
Application granted granted Critical
Publication of EP1036657B1 publication Critical patent/EP1036657B1/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
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/40—Devices for tripping or lifting damping rollers; Supporting, adjusting, or removing arrangements therefor

Definitions

  • the invention relates to a dampening system for a printing press, consisting of a first Roller and a second roller, which together form a slip gap, after the Preamble of claim 1.
  • EP 0 893 251 A2 describes such a dampening unit, which has an immersion roller Includes slip roller and an intermediate roller.
  • the slip roller turns with one Surface speed, which is different from a surface speed the intermediate roller is.
  • one of the slip rollers along with the The nip formed between the nip is a so-called slip nip.
  • the above Rollers only contain dampening solution and no ink / dampening solution emulsion.
  • the invention has for its object to provide a further dampening system.
  • the task is performed by a dampening system with the features of claim 1 solved.
  • the dampening system according to the invention for a printing press consists of a first and a second roller, which together form a slip gap, and is characterized by it from that an axis of rotation about which the first roller is pivotable to the second roller is stored, lies on a line which through a central axis of the first roller and in Essentially parallel to a tangential line running through the slip gap runs.
  • One of the advantages of the dampening system according to the invention is that an in Slip nip shear force no the first roller from the second roller can cause pushing or pushing to the second roller torque.
  • the roller pressure remains in the slip gap and that which is conveyed by it Fountain solution film or preferably ink-fountain solution emulsion film constant.
  • the dampening system according to the invention is very good as an emulsion film dampening system for the processing of an alcohol-free dampening solution, which in turn is ecological is advantageous.
  • emulsion film dampening has a greater shear force than that of the Shear of a color-free dampening solution film in a so-called alcohol dampening system.
  • the high shear forces caused those known from the prior art Emulsion dampening systems constructive and functional restrictions. In contrast there are no such restrictions in the dampening system according to the invention available.
  • the first Roll an energy accumulator, e.g. B. a spring for storing the first roller around the Assign axis of rotation to the second roller pivoting positioning force.
  • the use of a such an energy accumulator holding the first roller elastically on the second roller a slight stop movement of the first roller from the second roller acts, is with regard to the exact dosage of an ink fountain solution emulsion extremely beneficial.
  • the section shows a printing machine 1 in a detail.
  • the section shows a printing form cylinder 2, an inking unit 3 and one with an alcohol-free dampening solution working and trained as a so-called direct film or emulsion dampening Dampening unit 4 of the printing press 1.
  • the latter is used as a rotary printing press Printing of printed material sheets formed and further includes one Blanket cylinder and an impression cylinder, which are not shown and form an offset printing unit together with the printing form cylinder 2.
  • the dampening unit 4 consists of a first roller 6 arranged in a trough-shaped dampening solution container 5 as an immersion roller, a second roller 7 lying on the first roller 6 as a transfer roller in rolling contact, and a third roller lying on the second roller 7 as an axially oscillating friction roller in rolling contact Roller 8, one on the third roller 8 and the printing form cylinder 2 as an application roller in roller contact, and a fourth roller 9, which acts as a metering roller exclusively on the first roller 6 in roller contact.
  • Each of the shortest transport path of the dampening solution from the dampening solution tank 5 to form the printing form cylinder 2 rollers 6 to 9 and also the fifth roller 10 is provided on the circumference with a color-friendly coating B 6 to B 10 and leads to an ink-fountain solution emulsion on its peripheral surface coated in this way.
  • the coatings B 7 , B 9 and B 10 of the rollers 7, 9 and 10 are soft rubber coatings and the coatings B 6 and B 8 of the rollers 6 and 8 are hard rubber or plastic coatings and consist, for. B. made of hard nylon (Rilsan).
  • the rollers 6 and 10 are rotatably mounted in a common first carrier 11, which around a arranged on a frame 12 first pivot bearing 13 with a Axis of rotation 14 is pivotable.
  • the first carrier 11 consists of two bearing plates, between which bales of rollers 6 and 10 are arranged.
  • adjusting device 15 is the pressure between the rollers 6 and 10 adjustable by turning a setting thread 16, z.
  • B. a screw that Adjustment device 14 an axle 17 of the fifth roller 10 depending on the direction of rotation Adjustment thread 16 to the first roller 6 and is adjustable away from this.
  • a second support 20 is pivotally mounted in which the fourth Roller 9 is rotatably mounted.
  • An actuator 21 engages on the second carrier 20 optional turning on and off of the fourth roller 9 to and from the printing form cylinder 2.
  • the actuator 21 is a pneumatic and double acting - d. H. by Pressurized fluid supply both retractable and extendable - working cylinder, which on Frame 12 and its piston rod on the second carrier 20 is articulated.
  • An electric motor 22 used as a main motor of the printing press 1 rotates the printing form cylinder 2 and the rollers 8 and 9 with a circumferential surface speed v 8 which is essentially the same as each other.
  • the motor 22 is connected to the printing form cylinder 2 and the third roller 8 by means of schematically illustrated gear transmissions 23 and 24.
  • the fourth roller 9 is rotated by the third roller 8 with the friction thereof.
  • the second motor 25 is connected in terms of drive to the first roller 6 via an exclusively torque-transmitting clutch 18 and the fifth roller 10 is rotated by the first roller 6 with it.
  • FIG. 1 it is symbolically shown by rotation arrows accordingly selected that a circumferential surface speed v 7 of the second roller 7 is smaller than the circumferential surface speed v 8 , but larger than the circumferential surface speed v 6 .
  • the energy accumulator 29 holds the first roller 6 in elastic contact with the second roller 7.
  • the width of the press strip within the nip N 6.7 between the rollers 6 and 7 is determined by a normal force F N, 6.7 applied by the energy accumulator 29 - see FIG. 2.
  • the energy accumulator 29 presses the first roller 6 against the second roller 7.
  • the moistened peripheral surface of the second roller 7 forms a stop for the first roller 6. Other stops for determining the position of the roller 6 are not necessary.
  • the roller gap N 6.7 is a so-called slip gap due to the difference between the peripheral surface speeds v 6 and v 7 and a roller gap N 7.8 between the rollers 7 and 8 is a so-called slip gap due to the difference between the peripheral surface speeds v 7 and v 8 .
  • the liquid transported through the roller nips N 6.7 and N 7.8 is subject to more than one splitting, such as the ink-fountain solution emulsion also in a slip-free nip, but also in shear
  • FIG. 2 shows that a force line of action k 6.7 corresponds to the normal force F N, 6.7 to a center point of the rollers 6 and 7 and a force line of action k 7.8 to the normal force F 7.8 corresponds to a center point of the rolls 7 and 8 .
  • a force line of action k 6.7 corresponds to the normal force F N, 6.7 to a center point of the rollers 6 and 7
  • a force line of action k 7.8 to the normal force F 7.8 corresponds to a center point of the rolls 7 and 8 .
  • a common tangential line t 6,7 rollers 6 and 7 determined by the nip N 6,7 is a liquid shear force F S, 6,7 and along a common tangential line t 7,8 of the rollers 7 and 8 is a liquid shear force F S, 7.8 effective.
  • the arrangement of the axis of rotation 14 of the first carrier 11 on a line L running through a central axis M of the first roller 6 and parallel to the tangential line t 6.7 and perpendicular to the force action line k 6.7 or the center point of the rollers 6 and 7 ensures that the shear force F S, 6, 7 can not exert any torque on the first carrier 11 which impairs the placement of the first roller 6 on the second roller 7, ie no torque pushing the first roller 6 towards the second roller 7 or pushing it away from the second roller 7 .
  • the shear force F S, 6.7 , z. B. caused by changes in one of the circumferential surface speeds v 6 or v 7 of the rollers 6 and 7, the resulting from the bias of the energy accumulator 29 normal force F N, 6.7 and thus the set pressure between the rollers 6 and 7 remains constant.
  • the axis of rotation 14 is within a wedge-shaped tolerance range 30 surrounding the line L is arranged.
  • the position of tolerance limits 31 and 32 on both sides becomes of the tolerance range 30 of an angle ⁇ between the line L and the respective one Tolerance limit 31 or 32 defined.
  • the angle ⁇ is less than or equal to 15 °.
  • FIG. 4 shows a possible variant for introducing a driving force F A that generates the speed difference in the nip N 6.7 .
  • the driving force F A does not transmit a torque which pivots the first roller 6 about the axis of rotation 14 and thereby adversely affects the constancy of the pressure in the roller gap N 6, 7 to the first carrier 11.
  • the clutch 18 connects a shaft 36 rotated by the motor 25, e.g. B. a motor shaft of the motor 25, with a coaxial to the shaft 36 pin-shaped roller axis 37 of the first roller 6.
  • the clutch 18 is designed as a sleeve clutch and consists of two permanently connected coupling halves, namely a gear 26 and a non-rotatably seated on the shaft 36 Gear 27 seated in a rotationally fixed manner on the roller axis 37.
  • the gear wheels 26 and 27 are enclosed by a flexible sleeve 28 which has two toothings on the inside into which the gear wheels 26 and 27 engage.
  • a flexible shaft instead of the coupling 18 shown, a flexible shaft, a double cardan joint, a curved tooth coupling, a parallel crank coupling or another compensating coupling to compensate for inclination and / or misalignment deviations for driving connection of the motor 25 to the first roller 6 can also be used.
  • a central axis M of the first roller 6 is predetermined by the roller axis 37, around which axis the first roller 6 rotates.
  • a brake can also be arranged to brake the rotation of the roller 6 and to generate the slip in the nips N 6.7 and N 7.8 .
  • the brake would have to be arranged stationary on the frame 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP00104434A 1999-03-17 2000-03-03 Dispositif de mouillage pour une machine à imprimer Expired - Lifetime EP1036657B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19911783 1999-03-17
DE19911783 1999-03-17

Publications (3)

Publication Number Publication Date
EP1036657A2 true EP1036657A2 (fr) 2000-09-20
EP1036657A3 EP1036657A3 (fr) 2001-03-28
EP1036657B1 EP1036657B1 (fr) 2003-10-01

Family

ID=7901222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104434A Expired - Lifetime EP1036657B1 (fr) 1999-03-17 2000-03-03 Dispositif de mouillage pour une machine à imprimer

Country Status (6)

Country Link
US (2) US6354202B1 (fr)
EP (1) EP1036657B1 (fr)
JP (2) JP2000272082A (fr)
CN (1) CN1165419C (fr)
AT (1) ATE251035T1 (fr)
DE (2) DE10008488A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101024A1 (de) * 2001-01-11 2002-07-18 Heidelberger Druckmasch Ag Vorrichtung zur Variation der Feuchtung an Druckwerken von Rotationsdruckmaschinen

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DE10008488A1 (de) * 1999-03-17 2000-09-21 Heidelberger Druckmasch Ag Feuchtwerk einer Flachdruckmaschine
DE60139442D1 (de) * 2000-06-30 2009-09-17 Komori Printing Mach Steuerung für die Farbvorrichtung von einer Druckmaschine
US7154854B1 (en) 2000-08-18 2006-12-26 Nortel Networks Limited Automatic distribution of RTS and frag thresholds
US7366103B2 (en) * 2000-08-18 2008-04-29 Nortel Networks Limited Seamless roaming options in an IEEE 802.11 compliant network
DE10113338B4 (de) * 2001-03-20 2004-10-28 Koenig & Bauer Ag Verfahren und Vorrichtungen zum Antrieb einer Druckeinheit
US20030172818A1 (en) * 2002-03-13 2003-09-18 Marcel Motard Dampening system for a printing press
ITBO20030627A1 (it) * 2003-10-23 2005-04-24 Gd Spa Unita' di stampa di un nastro per una macchina automatica.
DE102004031946B4 (de) * 2004-06-30 2021-03-18 Heidelberger Druckmaschinen Ag Verfahren zum Antreiben von Walzen eines Druckwerkes einer Druckmaschine
DE102005006064A1 (de) * 2005-02-10 2006-08-24 Man Roland Druckmaschinen Ag Vorrichtung zum Auftragen eines Fluids auf eine Druckform
DE102006015649B4 (de) * 2006-04-04 2008-02-28 Adidas International Marketing B.V. Schuh
US20080163889A1 (en) * 2007-01-05 2008-07-10 Applied Materials, Inc. Megasonic transducer matching network for wet clean chambers
DE102008001848A1 (de) * 2008-05-19 2009-12-03 Koenig & Bauer Aktiengesellschaft Anordnung in einem Druckwerk einer Druckmaschine
JP6114544B2 (ja) * 2012-01-13 2017-04-12 株式会社小森コーポレーション 番号印刷機
US9616653B2 (en) 2012-08-30 2017-04-11 Xerox Corporation Systems and methods for ink-based digital printing using dampening fluid imaging member and image transfer member
DE102014003471A1 (de) 2014-03-05 2015-09-10 Heidelberger Druckmaschinen Ag Wälzlager mit doppeltem Freilauf
JP2016038497A (ja) * 2014-08-08 2016-03-22 富士ゼロックス株式会社 画像形成装置および画像形成ユニット
CN108544835B (zh) * 2018-05-31 2023-11-03 浙江炜冈科技股份有限公司 印刷机润版机构
CN109291620B (zh) * 2018-09-13 2021-04-09 云南卓印科技有限公司 一种免润湿原液轮转印刷系统及印刷方法
CN112937078A (zh) * 2021-04-06 2021-06-11 云南卓印科技有限公司 免酒精和润湿原液的胶印机润湿装置、胶印机及印刷方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101024A1 (de) * 2001-01-11 2002-07-18 Heidelberger Druckmasch Ag Vorrichtung zur Variation der Feuchtung an Druckwerken von Rotationsdruckmaschinen
DE10101024B4 (de) * 2001-01-11 2010-09-30 Goss International Montataire S.A. Vorrichtung zur Variation der Feuchtung an Druckwerken von Rotationsdruckmaschinen

Also Published As

Publication number Publication date
HK1029308A1 (en) 2001-03-30
EP1036657A3 (fr) 2001-03-28
ATE251035T1 (de) 2003-10-15
US6546860B1 (en) 2003-04-15
DE10008488A1 (de) 2000-09-21
DE50003870D1 (de) 2003-11-06
CN1267597A (zh) 2000-09-27
EP1036657B1 (fr) 2003-10-01
CN1165419C (zh) 2004-09-08
US6354202B1 (en) 2002-03-12
JP2000272083A (ja) 2000-10-03
JP2000272082A (ja) 2000-10-03

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