EP0445542B1 - Antrieb einer Heberwalze einer Druckmaschine - Google Patents

Antrieb einer Heberwalze einer Druckmaschine Download PDF

Info

Publication number
EP0445542B1
EP0445542B1 EP91101642A EP91101642A EP0445542B1 EP 0445542 B1 EP0445542 B1 EP 0445542B1 EP 91101642 A EP91101642 A EP 91101642A EP 91101642 A EP91101642 A EP 91101642A EP 0445542 B1 EP0445542 B1 EP 0445542B1
Authority
EP
European Patent Office
Prior art keywords
roller
diameter
friction
rollers
ductor roller
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.)
Expired - Lifetime
Application number
EP91101642A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0445542A1 (de
Inventor
Peter Hummel
Berthold Seib
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
Priority to AT91101642T priority Critical patent/ATE104213T1/de
Publication of EP0445542A1 publication Critical patent/EP0445542A1/de
Application granted granted Critical
Publication of EP0445542B1 publication Critical patent/EP0445542B1/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
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/14—Applications of messenger or other moving transfer rollers

Definitions

  • the invention relates to a drive of a jack roller of a printing press, in particular a sheet-fed offset printing press, according to the preamble of the first claim. (see FR-A-2564380)
  • the lifting roller itself is usually not driven. It is consequently carried by friction alternately from the box roller or from the first roller of the inking or dampening unit, which is usually designed as a friction roller.
  • the lifting roller is always braked on the slower-driven box roller and is always accelerated on the faster-driven friction roller.
  • the difference in the peripheral speed of these rollers, particularly at high machine speeds, causes an uneven liquid flow because the rolling movement of the corresponding rollers does not take place exactly.
  • the object of the invention is to provide a drive with which a clean fluid transfer is ensured even at the highest machine speeds with a lifting roller which is carried along purely by friction.
  • the advantage of the invention over the prior art is that purely by friction a slip-free transfer of the liquid from the box roller to the lifting roller and from the lifting roller to the grinder roller is reached.
  • the time between the contact, the converging friction rings attached to the rollers and the fluid transfer is used to compensate for the speed.
  • the movement of the lifting roller is inevitably delayed on its pendulum path immediately before it hits the box roller and accelerates immediately before it hits the friction roller.
  • a box roller 2 and a friction roller 4 are mounted in side walls 23 in the machine frame.
  • a roller lever 17 is pinned to a shaft 1 and a forked lever 5 is pinned to the left and right between the side walls 23.
  • a rocker arm 6 is mounted on the shaft 1. The arm of each rocker arm 6 is resiliently connected to the fork-shaped lever 5.
  • a roller lever 17 with a cam roller 19 is pressed onto the cam of a cam plate 20 by means of a compression spring 21 via a spring rod 18.
  • the compression spring 21 is supported on a spring support 22 mounted in the side walls 23. In this way it is ensured that when the cam disc 20 rotates, the shaft 1 performs an oscillating movement the size of a pivot angle 25.
  • a jack roller 3 is received via roller bearings.
  • adjustable resilient bolts 11, 12 having resilient buffers 7, 9, 11, 13; 8, 10, 12, 14 attached opposite each other.
  • two adjusting screws 15, 16 arranged opposite one another are attached.
  • a resilient friction ring 30, the diameter of which is selected to be slightly larger than the diameter of the lifting roller 3, is fastened on shaft sections 27 on both sides of the lifting roller 3 outside the ink-carrying contact points of the rollers 2, 3, 4.
  • a hard friction ring 29 is fastened in the same way, the diameter of which is selected to be the same as the diameter of the box roller 2.
  • a hard friction ring 31 is fastened in the same way on shaft sections 28 of the friction roller 4, the diameter of which is selected to be equal to the diameter of the friction roller 4.
  • the friction rings 29 to 31 are so axially attached to the associated rollers 2, 3, 4 that the friction rings 29, 30 and 30, 31 of the approaching rollers 2, 3 and 3, 4 are able to roll on each other with mutual contact.
  • the resilient friction rings 30 are made of a compressible material, e.g. made of rubber.
  • the friction rings 29, 30 and 30, 31 first come into contact before the ink transfer is initiated.
  • the time between the contact of the friction rings 29 to 31 and the ink transfer on the respective rollers 2, 3 and 3, 4 is used for speed compensation. This is achieved by the larger diameter and the compressibility of the friction rings 30 of the lifting roller.
  • the compressibility is designed so that a perfect color transfer is guaranteed.
  • the peripheral speed of the lifting roller 3 then corresponds to the peripheral speed of the box roller 2 or the friction roller 4.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP91101642A 1990-03-08 1991-02-07 Antrieb einer Heberwalze einer Druckmaschine Expired - Lifetime EP0445542B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91101642T ATE104213T1 (de) 1990-03-08 1991-02-07 Antrieb einer heberwalze einer druckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007285 1990-03-08
DE4007285A DE4007285C1 (enExample) 1990-03-08 1990-03-08

Publications (2)

Publication Number Publication Date
EP0445542A1 EP0445542A1 (de) 1991-09-11
EP0445542B1 true EP0445542B1 (de) 1994-04-13

Family

ID=6401675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101642A Expired - Lifetime EP0445542B1 (de) 1990-03-08 1991-02-07 Antrieb einer Heberwalze einer Druckmaschine

Country Status (4)

Country Link
EP (1) EP0445542B1 (enExample)
AT (1) ATE104213T1 (enExample)
DE (2) DE4007285C1 (enExample)
ES (1) ES2051530T3 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10158592A1 (de) * 2001-11-29 2003-06-18 Roland Man Druckmasch Heberfarbwerk

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD121300A1 (enExample) * 1975-05-23 1976-07-20
DD141490A1 (de) * 1979-03-01 1980-05-07 Rudolf Stoerr Heberantrieb
DD203016A1 (de) * 1981-11-30 1983-10-12 Hans Johne Farbwerk fuer druckmaschinen
DD206350A1 (de) * 1982-03-15 1984-01-25 Guenter Schumann Heberdosiersystem fuer druckmaschinen
DE3342877C1 (de) * 1983-11-26 1985-01-10 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Heberfarbwerk fuer eine Rotationsdruckmaschine
FR2564380B1 (fr) * 1984-05-15 1990-06-15 Marinoni Harris Sa Dispositif de reduction de chocs dans la commande d'encrage d'un preneur d'encre alternatif de presse offset rotative

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10158592A1 (de) * 2001-11-29 2003-06-18 Roland Man Druckmasch Heberfarbwerk
DE10158592B4 (de) * 2001-11-29 2006-03-23 Man Roland Druckmaschinen Ag Heberfarbwerk

Also Published As

Publication number Publication date
DE4007285C1 (enExample) 1991-06-06
EP0445542A1 (de) 1991-09-11
ES2051530T3 (es) 1994-06-16
DE59101348D1 (de) 1994-05-19
ATE104213T1 (de) 1994-04-15

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