EP0633134A1 - Stichdruckmaschine - Google Patents

Stichdruckmaschine Download PDF

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Publication number
EP0633134A1
EP0633134A1 EP94810338A EP94810338A EP0633134A1 EP 0633134 A1 EP0633134 A1 EP 0633134A1 EP 94810338 A EP94810338 A EP 94810338A EP 94810338 A EP94810338 A EP 94810338A EP 0633134 A1 EP0633134 A1 EP 0633134A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
wiping
speed
plate cylinder
motor
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
EP94810338A
Other languages
English (en)
French (fr)
Other versions
EP0633134B1 (de
Inventor
Antonio Bonomi
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.)
KBA Notasys SA
Original Assignee
De la Rue Giori SA
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 De la Rue Giori SA filed Critical De la Rue Giori SA
Publication of EP0633134A1 publication Critical patent/EP0633134A1/de
Application granted granted Critical
Publication of EP0633134B1 publication Critical patent/EP0633134B1/de
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
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1018—Doctors, scrapers, or like devices using a wiping cylinder
    • 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 an intaglio printing machine comprising a plate cylinder and a wiping cylinder which is in contact with the plate cylinder and whose speed of rotation peripheral to the contact zone is opposite to that of the plate cylinder, the latter being rotated by a first motor.
  • Such intaglio printing machines have been known for a long time.
  • the wiping cylinder is used to clean the surface of the intaglio printing plates carried by the plate cylinder at each revolution thereof after the inking of said plates, so that the ink only fills the engraved sizes while the surface of the plates outside the sizes is completely devoid of ink, this in order to obtain an integrity impression.
  • a relative peripheral speed between the two cylinders is created in the contact zone which is the effective wiping speed composed of the addition of the peripheral speed of the plate cylinder and the peripheral speed of the cylinder. wiping.
  • the quality of the wiping depends, apart from the nature of the surface or the coating of the wiping cylinder, this wiping speed and the pressure between the two cylinders. It turned out that the higher the effective wiping speed, greater must be the pressure with which the cylinders are in contact so that the wiping is perfect.
  • the design of all printing machines known so far is such that it is the plate cylinder which is driven by a motor and that the drive of the wiping cylinder is done by the same motor via a kinematic connection with the plate cylinder formed by a gear system. So the two cylinders are driven by a single motor, with a fixed speed ratio.
  • an optimal printing speed is chosen, that is to say that the speed of rotation of the plate cylinder.
  • this predetermined speed which also defines the speed of rotation of the wiping cylinder.
  • the optimum wiping pressure depending on the effective wiping speed is chosen.
  • the object of the invention is to avoid the need for a readjustment of the pressure of the wiping cylinder. against the plate cylinder each time the speed of the plate cylinder is changed.
  • the invention is characterized by the characteristic clause of claim 1.
  • the relative peripheral speed therefore the wiping speed, remains constant for any speed of rotation of the plate cylinder and it is not necessary to modify the pressure between the plate cylinder and the wiping cylinder once this pressure has been chosen.
  • Figure 1 schematically illustrates the essential parts of an intaglio printing machine.
  • Figure 2 is the control block diagram of the plate and wiping cylinders.
  • FIG. 1 there is shown a conventional intaglio machine comprising a plate cylinder 1 on the periphery of which are mounted the intaglio printing plates.
  • This plate cylinder 1 is in contact with the printing cylinder 2 and, in the example shown, with three ink rollers 3 supplied by inking devices 4 shown diagrammatically in FIG. 1.
  • the three rollers 3 are intended ink the intaglio printing plates with three different inks.
  • the wiping cylinder 5 is also associated with a cleaning device 6, illustrated diagrammatically in FIG. 1, which makes it possible to remove every trace of ink from the surface of said wiping cylinder 5 before it it does not come into contact with the intaglio plate which it must clean.
  • the paper 8 to be printed which can be either sheets or a strip of paper, is brought via two input rollers 9 to the periphery of the printing cylinder 2, then passes between the printing cylinder 2 and the plate cylinder 1 to be printed and exits via the output roller 10.
  • the plate cylinder 1 and the printing cylinder 2 rotate in opposite directions according to the arrows, such that their surface peripheral to the contact zone, which is practically a line of contact, rotates in the same direction, the contact between the two cylinders 1 and 2 is therefore made without friction to allow the correct transfer of the ink from the intaglio printing plates onto the paper to be printed which passes between the two cylinders.
  • the wiping cylinder 5 rotates in the same direction of rotation as the plate cylinder 1 and therefore at the level of the contact zone between the cylinders, their peripheral speeds are opposite, as indicated by the arrows, thus creating a friction which ensures wiping.
  • the drive of the plate cylinder drive 1 and the wiping cylinder 5 is shown diagrammatically in FIG. 2.
  • a first engine M1 drives the plate cylinder 1 while a second engine M5 drives the wiping cylinder 5.
  • the shafts of the two cylinders are each equipped with a speed measurement sensor, for example a tachometric dynamo T1, respectively T5.
  • the data measured by these tachometric dynamo T1, T5 are transmitted to an electronic control unit 7 which is arranged to control on the one hand the motor M1, on the other hand the motor M5 so that the relative peripheral speed between the two cylinders 1 and 5 remains constant and is maintained at a given value chosen as the optimal value.
  • This speed is independent of the printing speed, i.e.
  • the peripheral peripheral speed that is to say the effective wiping speed
  • the peripheral peripheral speed remains constant and it is as a function of this wiping speed that the optimal wiping pressure is chosen.
  • the wiping speed is 3 m / s.
  • This optimal speed will be stored in the control unit. If, due to very different printing conditions, it turns out that, depending on these conditions, one or more other optimal value of the wiping speed is advantageous, it is of course possible to predetermine several speed values d wiping depending on the circumstances and memorizing them. In general, this optimal wiping speed is between 2.5 and 3.5 m / s.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Threshing Machine Elements (AREA)
  • Massaging Devices (AREA)
  • Sewing Machines And Sewing (AREA)
  • Rotary Presses (AREA)
  • Control Of Multiple Motors (AREA)
EP94810338A 1993-07-05 1994-06-08 Stichdruckmaschine Expired - Lifetime EP0633134B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2019/93 1993-07-05
CH201993 1993-07-05

Publications (2)

Publication Number Publication Date
EP0633134A1 true EP0633134A1 (de) 1995-01-11
EP0633134B1 EP0633134B1 (de) 1997-01-22

Family

ID=4224010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810338A Expired - Lifetime EP0633134B1 (de) 1993-07-05 1994-06-08 Stichdruckmaschine

Country Status (3)

Country Link
EP (1) EP0633134B1 (de)
AT (1) ATE148031T1 (de)
DE (1) DE69401542T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2657021A1 (de) 2012-04-24 2013-10-30 KBA-NotaSys SA Einstellbare Antriebseinheit einer Druckpresse und Druckpresse, insbesondere Intaglio-Druckpresse damit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659305A (en) * 1950-01-23 1953-11-17 Giori Gualtiero Multicolor rotary, intaglio, letterpress, and offset printing press
FR2445651A1 (fr) * 1978-12-29 1980-07-25 Harris Corp Dispositif de commande des moteurs d'entrainement de la bande dans une presse d'imprimerie a bobines
EP0526398A1 (de) * 1991-07-30 1993-02-03 De La Rue Giori S.A. Stichtiefdruckmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659305A (en) * 1950-01-23 1953-11-17 Giori Gualtiero Multicolor rotary, intaglio, letterpress, and offset printing press
FR2445651A1 (fr) * 1978-12-29 1980-07-25 Harris Corp Dispositif de commande des moteurs d'entrainement de la bande dans une presse d'imprimerie a bobines
EP0526398A1 (de) * 1991-07-30 1993-02-03 De La Rue Giori S.A. Stichtiefdruckmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2657021A1 (de) 2012-04-24 2013-10-30 KBA-NotaSys SA Einstellbare Antriebseinheit einer Druckpresse und Druckpresse, insbesondere Intaglio-Druckpresse damit
WO2013160856A2 (en) 2012-04-24 2013-10-31 Kba-Notasys Sa Intaglio printing press
US9597864B2 (en) 2012-04-24 2017-03-21 Kba-Notasys Sa Intaglio printing press

Also Published As

Publication number Publication date
DE69401542T2 (de) 1997-07-31
DE69401542D1 (de) 1997-03-06
ATE148031T1 (de) 1997-02-15
EP0633134B1 (de) 1997-01-22

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