EP0696503A2 - Procédé et entrainement du preneur pour alimenter de l'encre dans un dispositif encrier à preneur d'une machine à imprimer - Google Patents

Procédé et entrainement du preneur pour alimenter de l'encre dans un dispositif encrier à preneur d'une machine à imprimer Download PDF

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Publication number
EP0696503A2
EP0696503A2 EP95110874A EP95110874A EP0696503A2 EP 0696503 A2 EP0696503 A2 EP 0696503A2 EP 95110874 A EP95110874 A EP 95110874A EP 95110874 A EP95110874 A EP 95110874A EP 0696503 A2 EP0696503 A2 EP 0696503A2
Authority
EP
European Patent Office
Prior art keywords
roller
lifter
speed
printing
lifting
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
EP95110874A
Other languages
German (de)
English (en)
Other versions
EP0696503B1 (fr
EP0696503A3 (fr
Inventor
Valentin Gensheimer
Achim Stöffler
Peter Hummel
Rudolf Ortner
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0696503A2 publication Critical patent/EP0696503A2/fr
Publication of EP0696503A3 publication Critical patent/EP0696503A3/fr
Application granted granted Critical
Publication of EP0696503B1 publication Critical patent/EP0696503B1/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
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/14—Applications of messenger or other moving transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/15—Devices for moving vibrator-rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/32—Means to vary the time of contact of one or more rollers in an ink train

Definitions

  • the invention relates to a method for supplying ink in the lifter inking unit of a printing press and a corresponding lifter drive according to the preamble of the respective method or device claim.
  • Lifter inking units are widely used in sheetfed offset presses.
  • Such siphon inking units have an ink fountain roller which interacts with an ink fountain in addition to a metering device, on the surface of which the ink to be printed is applied in the form of a layer of zonally adjustable thickness.
  • a siphoning roller which oscillates back and forth between the ink fountain roller and a downstream inking roller, usually a friction roller, picks up a color strip of a certain length due to occasional contact with the ink fountain roller and transfers this amount of ink to the inking roller or friction roller upon subsequent contact. Additional, subsequent inking unit rollers result in multiple splitting of the amount of ink supplied by the lifting roller.
  • the ink is then applied to the printing form via the inking rollers placed on the forme cylinder.
  • the ink guide is adjusted in accordance with predetermined target specifications as a rule at a lower printing speed (for example 5,000 sheets / h) than the subsequent production.
  • a lower printing speed for example 5,000 sheets / h
  • the production speeds of the high-speed sheetfed offset presses known today can be of the order of magnitude 15,000 sheets / h.
  • a coloration set at a low machine speed changes when the printing speed is subsequently increased in such a way that the color densities detectable on the printing sheet, for example the measuring fields of a print control strip, decrease.
  • the printed sheets produced when tuning at a low printing speed thus have a higher color density than those which are then produced at the actual production speed.
  • the effect briefly described here is also called color drop.
  • the reverse effect - increased coloration - occurs with a corresponding reduction in printing speed.
  • the drive of a lifting roller by means of a cam mechanism is known, for example, on the DD 276 455 A1 and the DD 212 475 B1.
  • the curve in the drive of the first-mentioned document is driven by a speed-controllable electric motor, the speed of the electric motor being coupled in terms of control technology to the speed of the printing unit of the machine.
  • the lifter drive according to DD 212 475 B1 which can be temporarily stopped via a locking lever, is used to adjust the lifter cycle to the amount of ink to be supplied.
  • a purely electronically controlled lifter drive is known, for example, from GB 2 193 926 A.
  • this document does not show the kinematics according to which the lifting roller is moved between the ink fountain roller and the downstream inking roller.
  • a pressure medium-operated lifter drive is also known from US Pat. No. 3,013,489.
  • the lifting roller is pivoted here by means of working cylinders which can be pressurized with pressure medium, the pressure medium being pressurized by a feed pump and being fed to the chambers of the working cylinders by a control slide which is driven in a machine-synchronized manner. Even if you constant Assuming the delivery pressure of the pump, the lifter roller will have kinematics in its movement between the ink fountain roller and the downstream inking roller, which depends on the printing speed. The reason for this is that the control slide is driven in time with the printing speed.
  • the lifter drives cited above are unable to solve the problem of the ink drop formed, particularly in the case of high-speed sheet-fed offset printing machines.
  • One cause of the ink drop must be seen in particular in the fact that the lifter roller experiences floating on the ink layer of the ink fountain roller when it comes into contact with the ink fountain roller due to a difference in the peripheral speeds.
  • the times in which the lifting roller is brought into contact with the ink fountain roller are very short.
  • the ink transfer from the ink fountain roller to the lifting roller is getting worse.
  • a comparable process also occurs when the ink is transferred from the siphon roller to the downstream inking roller.
  • the object of the present invention is therefore to improve a method for supplying ink in the lifter inking unit of a printing press and a corresponding lifter drive in accordance with the preamble of the respective method or device claim in such a way that the transfer of the ink from the ink fountain roller to the inking unit is largely independent of the printing speed and a clearly perceptible drop in color can be counteracted, in particular at very high printing speeds.
  • the on and off movement of the lifting roller with respect to the ink fountain roller takes place according to a time function which is independent of the printing speed.
  • the lifting roller for turning on and off with respect to the ink fountain roller is carried out according to a time function which is independent of the printing speed. It is also preferably possible for the lifter roller to be turned on and off with respect to the downstream inking roller after a time function which is independent of the printing speed of the machine.
  • This variant of the invention also has the advantage that the impacts exerted by the lifting roller on the subsequent inking unit rollers become independent of the printing speed.
  • the invention makes use of the knowledge that the colors used in offset printing technology have pronounced non-Newtonian properties. Thus, if the lifter roller is always turned on and off by the ink fountain roller after the same time function, there can be no changes in the ink transfer dependent on the printing speed.
  • the invention is preferably used in an ink fountain roller and lifter drive in which the ink fountain roller is driven in the same time manner at all printing speeds, that is to say in particular rotates constantly at a speed independently of the printing speed.
  • the contact angle of the lifting roller on the ink fountain roller is increased with increasing printing speed.
  • the drive for the lifting roller can be such that a cam disc is used which is driven by a speed-controlled electric motor.
  • the speed control upstream of the motor is such that the cam disc runs at a predetermined constant speed which is independent of the printing speed of the machine, when the roller of the bearing lever of the lifting roller running on the cam disc runs over those curve sections which in particular switch on and off the Effect lifting roller on the ink fountain roller.
  • the cam disk is driven again at a speed which correlates with the printing speed of the machine.
  • the times at which the speed of the control curve is switched from a machine-synchronous to a constant speed value can be achieved, for example, by sensory scanning of the control curve. A corresponding evaluation of an angle sensor attached to the printing press is also possible.
  • a cam disk is used which is driven by the inking unit, that is to say rotates at a speed which depends on the printing speed of the machine.
  • a controllable lifting device ensures that the lifting roller is always turned on and off by the ink fountain roller after the same time function.
  • Fig. 1 shows an ink fountain 1 extending over the format width of the printing press, with which a rotatably mounted ink fountain roller 2 interacts. Between the ink fountain roller 2 and a downstream inking roller 4, a lifting roller 3 is mounted to move back and forth.
  • the downstream inking roller 4 can in particular be a friction roller that executes axial traversing movements.
  • the lifting roller 3 is rotatably supported at its two ends in a pivot lever 5.
  • the two pivot levers 5 are connected to one another by a shaft 6 which extends over the format width and is pivotally mounted on the frame.
  • One end of a swivel lever 5 has, on an extension, a rotatably mounted roller 7, which runs on the outer contour of a control cam 8 which rotates as a function of the printing press speed.
  • the spring 7 is pressed against the outer contour of the control cam 8 by spring means (not shown).
  • the drive of the control cam 8 derived from the printing or inking unit can be such that the control cam 8 rotates once when the printing press makes three single-speed revolutions (lifting stroke 1: 3).
  • the control cam 8 has two radii, the lifting roller 3 on the downstream inking roller 4 is present when the roller 7 runs on the large radius of the cam 8. Accordingly, the lifter roller 3 bears against the ink fountain roller 2 when the roller 7 runs on the smaller radius of the control cam 8.
  • the swivel lever 5 having the roller 7 is assigned a lifting device 9 in such a way that the roller 7 can be lifted off the outer contour of the control cam 8, so that the lifting roller 3 does not abut the ink fountain roller 2 or the downstream inking roller 4.
  • the lifting device 9 according to the invention thus moves the roller 7 in an area between the small and large radius of the control cam 8.
  • the lifting device 9 consists of a servomotor 10 rotating in two directions of rotation, each with a constant speed, which is suspended from the frame.
  • a pinion 11 is attached to the rotor shaft of the servomotor 10 and is designed as a spur gear with straight teeth. This meshes with a second pinion 12 which is attached to the end of a threaded spindle screwed into a thread 14 fixed to the frame.
  • the pinion 12 has a width so that in the intended stroke range of the threaded spindle 13 the pinion 11 always remains in mesh with the pinion 12 with its entire width.
  • FIGS. 2 and 3 show how the lifting device 9 according to the invention, that is to say in particular the threaded spindle 13 which exerts a stroke, can lift the roller 7 of the one pivot lever 5 from the small radius of the control cam 8 or adjust it again.
  • the control curve 8, which rotates as a function of the printing speed, comes, starting from the situation according to FIG. 1, after about half a revolution with the transition from the large to the small radius in the area of the roll 7. First, the roll 7 then runs on the falling one Outer contour of the control cam 8, so that the lifting roller 3 is turned off by the inking roller 4.
  • rollers 7, 15 are rotatably arranged parallel to one another at the end of the pivot lever 5, roller 7 running on the control cam 8 and roller 15 being associated with the end of the threaded spindle 13.
  • the threaded spindle 13 in connection with the thread 14 fixed to the frame and the correspondingly configured actuating drive 10 thus represents a lifting device 9, the working movement of which is always carried out according to the same time function.
  • the actuating drive 10 is now driven in the opposite direction of rotation for extending the threaded spindle 13 from the thread 14 fixed to the frame. This causes the roller 7 to reach the contour transition before large radius of the control curve 8 is lifted from the small radius.
  • the constant drive speed of the actuator 10 in conjunction with the threaded spindle 13 causes the lifting roller 3 to be switched off again from the ink fountain roller 2 after a time function that is independent of the machine speed and to assume a position for a brief moment in which it is neither on the ink fountain roller 2 still rests on the inking roller 4.
  • Figures 4 and 5 once again show the positions of the rollers 7, 15 according to Figures 2 and 3 in section.
  • Figure 4 shows that the threaded spindle 13 of the lifting device 9, which acts on the roller 15, the roller 7 is lifted from the small radius of the cam 8.
  • the actuating drive 10 of the lifting device 9 is then actuated so that the roller 7 is brought into contact with the small radius of the control cam 8 via the roller 15.
  • the lifter roller 3 is now in contact with the ink fountain roller 2.
  • the actuator 10 on the lifting device 9 described above is connected to a controller (not shown) which, at the times indicated above, causes pulses to actuate the actuator 10.
  • the control can be operatively connected to sensors which scan markings on the control curve 8 or the transition of the control curve 8 from the large to the small radius and vice versa.
  • the control it can also be possible to set the triggering times for the lifting device 9 as a function of the printing speed. This can be used, for example, to carry out dead time compensation or to increase the lifting system angle on the ink fountain roller 2 at the printing speed.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Dot-Matrix Printers And Others (AREA)
EP95110874A 1994-08-11 1995-07-12 Entrainement du preneur pour alimenter de l'encre dans un dispositif encrier à preneur d'une machine à imprimer Expired - Lifetime EP0696503B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428403 1994-08-11
DE4428403A DE4428403C2 (de) 1994-08-11 1994-08-11 Heberantrieb einer Druckmaschine

Publications (3)

Publication Number Publication Date
EP0696503A2 true EP0696503A2 (fr) 1996-02-14
EP0696503A3 EP0696503A3 (fr) 1996-10-23
EP0696503B1 EP0696503B1 (fr) 1999-05-12

Family

ID=6525411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110874A Expired - Lifetime EP0696503B1 (fr) 1994-08-11 1995-07-12 Entrainement du preneur pour alimenter de l'encre dans un dispositif encrier à preneur d'une machine à imprimer

Country Status (6)

Country Link
US (2) US5685225A (fr)
EP (1) EP0696503B1 (fr)
JP (2) JP3095976B2 (fr)
AT (1) ATE179932T1 (fr)
DE (2) DE4428403C2 (fr)
ES (1) ES2132469T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822069A1 (fr) * 1996-07-31 1998-02-04 Komori Corporation Dispositif d'encrage pour machine à imprimer
CN111959867A (zh) * 2020-08-11 2020-11-20 韶关市华思迅飞信息科技有限公司 一种工业大数据自动化连接件生产装箱机构及方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753944C2 (de) * 1997-12-05 2002-06-06 Roland Man Druckmasch Verfahren zum Steuern eines Heberfarbwerkes einer Druckmaschine
DE19940532B4 (de) * 1998-10-16 2007-02-08 Heidelberger Druckmaschinen Ag Druckmaschine mit einem Heberfarbwerk
DE10106986B4 (de) 2001-02-15 2008-04-24 Man Roland Druckmaschinen Ag Verfahren zum Anfahren einer Offsetrotationsdruckmaschine
JP4638685B2 (ja) * 2003-06-10 2011-02-23 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト オフセット印刷機による印刷の際に湿し水を調量する方法
ITBO20030627A1 (it) * 2003-10-23 2005-04-24 Gd Spa Unita' di stampa di un nastro per una macchina automatica.
JP4958391B2 (ja) * 2004-07-05 2012-06-20 リョービ株式会社 印刷機およびインキ移しローラの制御方法
FR2937512B1 (fr) * 2008-10-23 2012-11-16 Oreal Systeme cosmetique comportant un systeme de reglage d'une caracteristique d'un produit en fonction d'une information d'horloge
US20150107676A1 (en) * 2013-10-18 2015-04-23 Jesse J. Green System and Method for Automatically Actuating A Valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013489A (en) 1957-10-01 1961-12-19 Samuel M Langston Co Printing machine ink roll vibrator
GB2193926A (en) 1986-07-24 1988-02-24 Ratby Eng Co Ltd Inking system in a printing machine
DD212475B1 (de) 1982-12-20 1989-03-01 Arndt Jentzsch Sperreinrichtung fuer einen farbheber in farbwerken fuer druckmaschinen
DD276455A1 (de) 1988-10-31 1990-02-28 Polygraph Leipzig Heberfarbwerk fuer schnellaufende rollen-rotationsdruckmaschinen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1531691A (fr) * 1967-05-25 1968-07-05 Vente De Materiels Pour La Fab Perfectionnements aux dispositifs de distribution d'encre de machines à imprimer
US3965819A (en) * 1975-01-31 1976-06-29 Harris Corporation Ink ductor system
US4524692A (en) * 1984-04-18 1985-06-25 Didde Graphic Systems Corporation Electronic ink flow control for printing
GB2192926B (en) * 1986-07-16 1989-12-20 R W O Improvements in or relating to a hook
JP2715081B2 (ja) * 1987-12-22 1998-02-16 東芝機械株式会社 インキ移しロールの揺動制御装置
DD271086A1 (de) * 1988-03-03 1989-08-23 Polygraph Leipzig Verfahren und vorrichtung zur steuerung der farbdosierung
CA2005045A1 (fr) * 1989-05-08 1990-11-08 Frank L. Shriver Methode pour decorer les boites de conserve, et appareil connexe
CA2049154C (fr) * 1990-09-14 1994-07-26 Glenn Alan Guaraldi Mecanisme d'alimentation en encre
JPH05162290A (ja) * 1991-12-13 1993-06-29 Mitsubishi Heavy Ind Ltd 印刷機のインキ供給装置
ATE150375T1 (de) * 1993-05-03 1997-04-15 Roland Man Druckmasch Heberfarbwerk und verfahren zur farbmengeneinstellung von druckmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013489A (en) 1957-10-01 1961-12-19 Samuel M Langston Co Printing machine ink roll vibrator
DD212475B1 (de) 1982-12-20 1989-03-01 Arndt Jentzsch Sperreinrichtung fuer einen farbheber in farbwerken fuer druckmaschinen
GB2193926A (en) 1986-07-24 1988-02-24 Ratby Eng Co Ltd Inking system in a printing machine
DD276455A1 (de) 1988-10-31 1990-02-28 Polygraph Leipzig Heberfarbwerk fuer schnellaufende rollen-rotationsdruckmaschinen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822069A1 (fr) * 1996-07-31 1998-02-04 Komori Corporation Dispositif d'encrage pour machine à imprimer
US5826508A (en) * 1996-07-31 1998-10-27 Komori Corporation Inking apparatus for printing press
CN111959867A (zh) * 2020-08-11 2020-11-20 韶关市华思迅飞信息科技有限公司 一种工业大数据自动化连接件生产装箱机构及方法
CN111959867B (zh) * 2020-08-11 2022-04-08 深圳盛拓信息科技有限公司 一种工业大数据自动化连接件生产装箱机构及方法

Also Published As

Publication number Publication date
JPH0858070A (ja) 1996-03-05
JPH11151802A (ja) 1999-06-08
DE59505886D1 (de) 1999-06-17
ATE179932T1 (de) 1999-05-15
EP0696503B1 (fr) 1999-05-12
JP3071766B2 (ja) 2000-07-31
DE4428403C2 (de) 1996-07-11
DE4428403A1 (de) 1996-02-15
ES2132469T3 (es) 1999-08-16
EP0696503A3 (fr) 1996-10-23
JP3095976B2 (ja) 2000-10-10
US5784960A (en) 1998-07-28
US5685225A (en) 1997-11-11

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