EP0132246B1 - Unité d'impression - Google Patents

Unité d'impression Download PDF

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Publication number
EP0132246B1
EP0132246B1 EP84850226A EP84850226A EP0132246B1 EP 0132246 B1 EP0132246 B1 EP 0132246B1 EP 84850226 A EP84850226 A EP 84850226A EP 84850226 A EP84850226 A EP 84850226A EP 0132246 B1 EP0132246 B1 EP 0132246B1
Authority
EP
European Patent Office
Prior art keywords
machine frame
cylinder
bearing brackets
printing
printing unit
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
Application number
EP84850226A
Other languages
German (de)
English (en)
Other versions
EP0132246A2 (fr
EP0132246A3 (en
Inventor
Jan Stenqvist
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84850226T priority Critical patent/ATE46109T1/de
Publication of EP0132246A2 publication Critical patent/EP0132246A2/fr
Publication of EP0132246A3 publication Critical patent/EP0132246A3/en
Application granted granted Critical
Publication of EP0132246B1 publication Critical patent/EP0132246B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/36—Cams, eccentrics, wedges, or the like

Definitions

  • the present invention relates to a printing unit mounted on a machine frame and comprising a back pressure cylinder, a printing cylinder adjustably spaced from said back pressure cylinder, and an inking roller included in an inking device and adjustably spaced from said printing cylinder, said printing cylinder and said inking roller being mounted in bearing brackets resting upon an arm on the machine frame and urgeable, by interposition of exchangeable gauge blocks, into pressure contact with a machine frame surface and the printing cylinder bearing brackets, respectively, by means of a power unit.
  • DE Patent 27 46 878 where the pressure contact is established during operation of the printing unit by means of a cylinder assembly hingedly connected to the machine frame arm and actuating a lever which, in its turn, is pivotally mounted in said arm and hingedly connected to a guide.
  • the guide can be clamped by means of a clamping device to a bar connected to the rear ends of the bearing brackets of the inking roller.
  • the printing unit which is disclosed in FR-A-2,271,931 and in which use is made of a chain for tensioning purposes.
  • the chain has one of its contact points located in the region of the machine frame surface of the printing unit whereas the other contact point is located on the bearing bracket of the inking device.
  • the chain is single acting.
  • the contact pressure exerted by the power unit has its contact points in the machine frame within the region of the machine frame surface, wherein the power unit is formed of at least one elongate member which is adjustably clamped at one end in the machine frame, which is connected at its other end to a power device, and which is passed between its ends around the bearing brackets, wherein the power device is mounted in the machine frame, and wherein the elongate member is passed around the bearing brackets via supporting guide means.
  • the elongate member is a chain which is passed around the bearing brackets via guide means mounted on the bearing bracket of the inking roller.
  • the chain is double acting and exerts a much larger force than the chain disclosed in the above- mentioned French document.
  • a back pressure cylinder 1 is rotatably mounted in a machine frame 2 which has an arm 3 carrying bearing brackets 4 for a printing cylinder 5 rotatably mounted in said bearing brackets 4. Further bearing brackets 6 are mounted on the machine frame arm 3 to carry the inking device of the printing unit.
  • the printing unit comprises an inking roller 7 cooperating with the printing cylinder 5 and engaging, in its turn, a fountain roller which dips into an ink container 9.
  • the fountain roller 8 is mounted in the bearing brackets 6 by means of swivel arms 28.
  • the web of material 10 travels between the back pressure cylinder 1 and the printing cylinder 5.
  • the machine frame 2 has a frame surface 11 against which the bearing brackets 4 of the printing cylinder can be urged by interposition of gauge blocks 12 corresponding to the diameters of the cylinders 1 and 5, said bearing brackets 4 being displaceably carried on the machine frame arm 3.
  • the bearing brackets 6 of the inking roller 7, on their part, can be urged against the bearing brackets 4 by interposition of gauge blocks 13 corresponding to the diameters of the printing cylinder 5 and the inking roller 7, said bearing brackets 6 also being displaceably carried on the arm 3.
  • each chain 15 is adjustably clamped at one end in the machine frame 2 by means of a self-locking eccentric lock 16.
  • the other end of each chain 15 is connected to one arm of a lever 17 pivotally mounted in the machine frame 2 and having its other arm hingedly connected to the piston rod of a pneumatic or hydraulic cylinder 18, the cylinder end of which is hingedly connected to the machine frame 2.
  • each chain 15 is passed around the bearing brackets 4 and 6 via upper and lower guide pulleys 19 and 20 rotatably mounted on the bearing brackets 6 of the inking roller 7.
  • the lower guide pulley 20 is mounted in an eccentric bush 21 which can be rotated to permit adjustable tensioning of the associated chain 15.
  • the chain 15 is tensioned via the lever 17 around the guide pulleys 19 and 20.
  • the contact pressure exerted by the cylinder 18 has its contact points in the machine frame 2 within the region of the frame surface 11, such that the arm 3 is entirely relieved of the contact pressure, and the bearing brackets 4 and 6 will be entirely independent of any support by the arm 3.
  • the nominal spacings between the rollers and the cylinders 1, 5 and 7 can be set exactly by means of the gauge blocks 12 and 13 in combination with the contact pressure of the bearing brackets 4 and 6 against one another and against the machine frame surface 11.
  • the printing cylinder 5 and the inking roller 7 are mounted in eccentric bushes 22 and 23 connected each to one lever 24 and 25.
  • the free ends of said levers 24 and 25 are hingedly connected to adjusting devices 26 and 27 with micrometer screws for precise adjustment.
  • a further advantage of the printing unit according to the invention is that its printing cylinder can be readily exchanged for another printing cylinder of different diameter.
  • the eccentric lock 16 is unlocked by means of a suitable tool, whereupon the chain 15 is slackened by the required amount.
  • the return movement made possible by the cylinder stroke can be adjusted by means of the eccentrically mounted guide pulley 20.
  • the so-called minus stroke of the cylinder 18 is set, via the guide pulley 20, to maximum value.
  • the eccentric lock 16 is opened.
  • the adjusting device 26 is removed from the machine frame 2, and the bearing brackets 4 and 6 can then be pulled back. If then also the adjusting device 27 is removed, the printing cylinder 5 with its bearing brackets 6 sits loosely on the machine frame arm 3 and can easily be dismounted. If the roller or cylinder diameter is changed, different gauge blocks must be mounted. After that, the bearing brackets are again moved together until the inherent springiness of the bearing brackets 4 begins to resist.
  • the eccentric lock 16 is locked and the cylinder 18 is moved in the opposite direction. Also the eccentrically mounted guide pulley 20 is turned to tension the chain 15. Using this guide pulley 20 to limit the stroke of the cylinder 18 is expedient in order to ensure that the spring force in the released position of the printing cylinder 5, when the machine is inoperative, can keep the bearing brackets 4 in position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Ink Jet (AREA)
  • Rotary Presses (AREA)

Claims (7)

1. Unité d'impression montée sur un bâti de machine (2) et comportant un cylindre (1) de contre-pression, un cylindre d'impression (5) espacé, avec possibilité de réglage, dudit cylindre (1) de contre-pression, et un rouleau d'encrage (7) inclus dans un dispositif d'encrage et espacé, avec possibilité de réglage, dudit cylindre d'impression (5), ledit cylindre d'impression (5) et ledit rouleau d'encrage (7) étant montés dans des supports (4, 6) qui reposent sur un bras (3) du bâti de la machine et peuvent être poussés, avec interposition de jauges échangeables (12, 13), pour mettre en contact de pression la surface (11) du bâti de la machine et les supports (4) du cylindre d'impression (5), respectivement, au moyen d'une unité de transmission (14), caractérisée en ce que la pression de contact exercée par l'unité de transmission (14) a ses points de contacts (16, 17) dans le bâti (2) de la machine à l'intérieur de la région de la surface (11) du bâti de la machine, étant précisé que l'unité de transmission (14) est formée d'au moins un élément de forme allongée (15) qui est bridé (en 16), avec possibilité de réglage, par sa première extrémité, dans le bâti (2) de la machine, qui est relié, par son autre extrémité, à un actionneur (18) et qui, entre ses extrémités, passe autour des supports (4, 6), étant précisé que l'actionneur (18) est monté dans le bâti (2) de la machine et que l'élément (15) de forme allongée passe autour des supports (4, 6) par l'intermédiaire de moyens de guidage supports (19, 20).
2. Unité d'impression selon la revendication 1, caractérisée en ce que la mise sous tension réglable de la première extrémité dudit élément (15) de forme allongée s'obtient au moyen d'un verrou excentré auto-bloquant (16).
3. Unité d'impression selon la revendication 1 ou 2, caractérisée en ce que l'autre extrémité dudit élément (15) de forme allongée est reliée audit actionneur (18) par l'intermédiaire d'un élément de transmission (17).
4. Unité d'impression selon l'une quelconque des revendications 1-3, caractérisée en ce que les moyens de guidage (19, 20) sont montés sur le support (6) du rouleau d'encrage (7).
5. Unité d'impression selon l'une quelconque des revendications 1-4, caractérisée en ce que l'élément de forme allongée est une chaîne (15), un câble etc.
6. Unité d'impression selon l'une quelconque des revendications 1-5, caractérisée en ce que l'actionneur est un vérin pneumatique ou hydraulique (18); et en ce que l'élément de transmission est un levier (17) qui est monté pivotant sur le bâti de la machine et dont un bras est relié à l'autre extrémité dudit élément (15) de forme allongée, l'autre extrémité dudit levier étant reliée audit vérin (18).
7. Unité d'impression selon l'une quelconque des revendications 1-6, caractérisée en ce que lesdits moyens de guidage sont de la forme de poulies de guidage (19, 20) dont au moins une (20) est réglable pour la mise sous tension dudit élément (15) de forme allongée.
EP84850226A 1983-07-18 1984-07-18 Unité d'impression Expired EP0132246B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84850226T ATE46109T1 (de) 1983-07-18 1984-07-18 Druckwerk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8304024 1983-07-18
SE8304024A SE454664B (sv) 1983-07-18 1983-07-18 Tryckverk

Publications (3)

Publication Number Publication Date
EP0132246A2 EP0132246A2 (fr) 1985-01-23
EP0132246A3 EP0132246A3 (en) 1986-12-30
EP0132246B1 true EP0132246B1 (fr) 1989-09-06

Family

ID=20352001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84850226A Expired EP0132246B1 (fr) 1983-07-18 1984-07-18 Unité d'impression

Country Status (4)

Country Link
EP (1) EP0132246B1 (fr)
AT (1) ATE46109T1 (fr)
DE (1) DE3479642D1 (fr)
SE (1) SE454664B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE453172B (sv) * 1987-02-13 1988-01-18 Jan Nicolai Stenqvist Tryckverk
SE9603083D0 (sv) * 1996-08-26 1996-08-26 Jan Stenqvist Printing unit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274687B (de) * 1966-12-15 1968-08-08 Telefunken Patent Grossbasispeilantennensystem sowie Auswerte- und Anzeigeeinrichtung fuer ein derartiges Antennensystem
DE2234089C3 (de) * 1972-07-08 1975-01-23 Automatic Druckmaschinenfabrik Dr. W. Hinniger U. Soehne, 1000 Berlin Offset-Rollen-Rotationsdruckmaschine
IT1044283B (it) * 1974-05-24 1980-03-20 Fischer & Krecke Kg Macchina da stampa tipografica a piu cilindri in particolare macchina da stampa flessografica
DE2746878C2 (de) * 1977-10-19 1982-05-27 Jan 26060 Kvindinge Stenqvist Druckwerk

Also Published As

Publication number Publication date
DE3479642D1 (en) 1989-10-12
EP0132246A2 (fr) 1985-01-23
SE8304024L (sv) 1985-01-19
ATE46109T1 (de) 1989-09-15
EP0132246A3 (en) 1986-12-30
SE454664B (sv) 1988-05-24
SE8304024D0 (sv) 1983-07-18

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