EP1295718B1 - Dispositif de guidage de feuilles pour une unité d'impression polychrome d'une machine d'impression rotative à feuilles - Google Patents

Dispositif de guidage de feuilles pour une unité d'impression polychrome d'une machine d'impression rotative à feuilles Download PDF

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Publication number
EP1295718B1
EP1295718B1 EP20020016644 EP02016644A EP1295718B1 EP 1295718 B1 EP1295718 B1 EP 1295718B1 EP 20020016644 EP20020016644 EP 20020016644 EP 02016644 A EP02016644 A EP 02016644A EP 1295718 B1 EP1295718 B1 EP 1295718B1
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EP
European Patent Office
Prior art keywords
printing unit
sheet
roller
impression cylinder
cylinder
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
EP20020016644
Other languages
German (de)
English (en)
Other versions
EP1295718A1 (fr
Inventor
Torald Rohloff
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 Metronic GmbH
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KBA Metronic GmbH
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Filing date
Publication date
Application filed by KBA Metronic GmbH filed Critical KBA Metronic GmbH
Publication of EP1295718A1 publication Critical patent/EP1295718A1/fr
Application granted granted Critical
Publication of EP1295718B1 publication Critical patent/EP1295718B1/fr
Anticipated expiration legal-status Critical
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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
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/10—Rotary lithographic machines for offset printing using one impression cylinder co-operating with several transfer cylinders for printing on sheets or webs, e.g. satellite-printing units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F25/00—Devices for pressing sheets or webs against cylinders, e.g. for smoothing purposes

Definitions

  • the invention relates to a sheet guiding device according to the preamble of claim 1.
  • Document US-A-1 465 386 discloses such a device.
  • the invention has for its object to provide a device on a multi-color sheet-fed rotary printing press with a printing cylinder, with which it is possible to reduce the waste.
  • the drawing shows a front view of a multicolour sheet-fed rotary printing press with attached stripper device according to the invention in the form of a roller.
  • a feed drum 45 passed from a sheet stack 40 continuously to be printed sheet 41 .
  • the gripper systems 44 each deliver their sheets to the gripper systems 9, 11, 12, 13, 14 of the impression cylinder 8.
  • the feed drum 45 is rotatably mounted and driven in the side frames 17,18.
  • Its isochronous drive can consist of its own variable-speed motor.
  • the drive can also be designed as a branch from the drive of the impression cylinder 8 with the interposition of a matching gear.
  • the multi-color printing unit 1 consists essentially of: a base 2, a plurality of eg four single printing units 6.1, 6.2, 6.3, 6.4 and a Centerfeldrigen Impression cylinder 8 with a plurality. For example, three, five or more, controlled gripper rows 9,11,12,13,14 with the associated gripper pads.
  • the lateral surface of the impression cylinder 8 can be metallic bright, but also have a rubber-elastic coating.
  • the printing unit 1 is fed by a sheet feeder (not shown) with arcuate printing media, e.g. made of paper, plastic or metal, supplied and discharged after a single or multi-color printing in the printing unit 1 of her and a sheet delivery (not shown) supplied.
  • a sheet feeder not shown
  • arcuate printing media e.g. made of paper, plastic or metal
  • the single printing units 6.1, 6.2, 6.3, 6.4 are advantageously free without being obstructed by front and / or rear side frames 4, 7 at least from the "operating side” 4 and / or from the rear machine side 6, the "drive side", e.g. accessible via an operating room 5.
  • the operating room 5 is provided between the two inner single printing units 6.2, 6.3 of the two double printing units 3.1, 3.2.
  • at least the side frame 4 of the "operating side” is recessed so that a free access to and in the control room 5 is ensured.
  • each rotatably mounted a Farbdosierwalze 21, an inking roller 22 with a rubber-elastic jacket 23, a forme cylinder 24 and a rubber cylinder 26. They all have the same effective circumference or diameter. They are preferably designed as so-called single-circumference cylinders or rollers. Form cylinder 24 and blanket cylinder 26 could also be designed as so-called. Doppelcite- cylinder. At least the blanket cylinders each have a channel whose circulation to the circulation of the gripper systems of the impression cylinder is synchronized.
  • a color feeder 27 is provided per color flow.
  • the ink flow takes place from the ink supply device 27 via the ink metering roller 21, the inking roller 22 to a printing forme of the forme cylinder 24.
  • the printing forme transfers its printing pattern to a blanket of the blanket cylinder 26.
  • the Farbzu classroom wisdomen 27 may be of various types. So it may be z. B. be a conventional color box with color meter / s.
  • the inking units 32 can be carried out as short inking units 32 in an advantageous manner. They then have an ink supply device 27, a Farbdosierwalze 21 and an inking roller 22. It can then be provided chambered blade of various designs. For example, with negatively employed work doctor and positively employed closing squeegee. Or even with negatively employed working and closing squeegee.
  • the nature of the jacket of the ink metering rollers 21 is in each case adapted to the material properties of the color meter or the doctor blade.
  • the coat is pressure-friendly and can be made of metal, plastic or ceramic or the like.
  • the surface of the shell may be smooth or textured, e.g. B. wells or so-called. Haschuren or combinations of both exhibit.
  • the form cylinder 24 have known fastening devices for flat-form printing plates (wet offset, dry offset) or flat-form sleeves and are occupied by them.
  • the form cylinder 24 could also be removably removable. They are stored for pressure and Druckabgna in known, rotatable eccentric bushes in the side frames 17,18.
  • the blanket cylinders 26 are equipped with known fastening devices for blankets or blanket sleeves, the so-called. Sleeves equipped.
  • a multi-field gripper drum 8 impression cylinder
  • It is designed as a so-called.
  • Mehrfachappelstrommel That is, their effective diameter is a multiple of the effective diameter of a single-circumference blanket cylinder.
  • the peripheral surface of the printing cylinder 8 is in a plurality of fields, -z. B. five -, fields 9.1,11.1,12.1,13.1,14.1, - divided.
  • the blanket cylinders 26 each form with the fields 9.1, 11.1, 12.1, 13.1, 14.1 of the lateral surface of the impression cylinder 8 each a pressure point for the printed arcuate print carrier, z. B. of paper, plastic or metal.
  • the counter-pressure surfaces can have metallic bright, but also a rubber-elastic coating (cover)
  • the number of their fields 9.1, 11.1, 12.1, 13.1, 14.1 corresponds to the number of controlled gripper rows 9, 11, 12, 13, 14. They follow each other directly and they form the counter-pressure surfaces for the blanket cylinder 26.
  • the effective diameter of the impression cylinder 8 of the multicolor printing unit 1 is always an integer multiple (greater than one) of the effective diameter of the forme cylinder 24 or blanket cylinder 26, also called blanket cylinder or transfer cylinder. Accordingly, the number of fields 9.1 to 14.1 on the circumference of the impression cylinder 8 is selected. Thus, in a four-color printing unit 28, at least three of the fields 9.1 to 14.1 are provided. Or four-, five-, six- etc.- feldrig could be the lateral surface of the impression cylinder 8.
  • a driven roller 33 is rotatably mounted in the side frames 17,18. It carries on its mantle surface a highly elastic, rubber-elastic, elastomeric rubber or rubber-like coating. It may, for example, a blanket cover, which preferably has a hardness of 50- 90 ° Shore A. Their drive is such that their peripheral speed is always equal to the peripheral speed of the impression cylinder 8.
  • / are in their lateral surface corresponding to the multiple of the just mentioned circumference one or more axially parallel pits 36 provided. They are in position and matched in their dimensions to the pits of the gripper rows 9.1,11.1,12.1,13.1,14.1 of the impression cylinder 8. They each serve as a temporary "receiving space" for the parts of all the gripper rows 9.1, 11.1, 12.1, 13.1,14.1, which protrude during the encounter with the circumference of the roller 33 over the circumference of the impression cylinder (principle: two meshing gears).
  • the pits may also be provided for receiving known per se Kunststofftuch.-fastening devices. With these, the ends of the blanket covers 34 are stretched and held.
  • the jacket (cover) of the roller 33 may be provided over its length, starting from half the roller length, with two counter-rotating spiral grooves. As a result, the stripping effect of the roller 33 would be increased in an advantageous manner.
  • peripheral speeds of driven roller 33 and impression cylinder 8 are synchronized so exactly that the pits of roller and cylinder always happen exactly in each operating state of the machine, so that the gripper rows of the impression cylinder can not be damaged by the roller 33.
  • the roller 33 is adjustable in its distance from the lateral surface of the impression cylinder 8 according to the thickness of the sheets to be printed.
  • the surface pressure to be set should not be too large.
  • the roller 33 is, as already stated, speed and rotational synchronous z. B. to the impression cylinder 8 of the printing unit 1 and the other printing units 6.1, 6.2, 6.3, 6.4, driven.
  • a motor journal of the outside of the side frame of the drive side of the undercarriage 2 flanged frequency-controlled three-phase main drive motor is coupled to one end of a cylinder pin of the impression cylinder 8.
  • a high-resolution pulse disc is attached to the other cylinder pin of the impression cylinder 8.
  • the pulse disc cooperates with a frame-fixed digital speed and rotation angle pulser of the main drive motor and generates the speed and Drehwinkelistwert which is fed to a setpoint, Istwert- comparator. He must-. Actual value comparator generates a control deviation value which is supplied to a control device.
  • the control device generates the manipulated variable, the, z. B. from a three-phase frequency controller and the three-phase motor existing control system is supplied.
  • the drive motor of the roller 33 thus drives the roller 33 z. B.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Claims (8)

  1. Unité d'impression polychrome rotative à feuilles (1) avec un seul cylindre à contre-pression (8) avec une pluralité de dispositifs gouvernables en cadence (9, 11, 12, 13, 14) pour l'immobilisation temporaire de supports d'impression cintrés et une pluralité d'éléments d'impression (6.1,6.2,6.3,6.4) concourant avec un seul cylindre à contre-pression (8), lesquels éléments se composent chaque fois au moins d'un mécanisme d'encrage (27, 22), d'un cylindre gravé (24) et d'un rouleau de transfert (26) équipé pour l'application d'encre d'imprimerie sur les supports d'impression cintrés, sachant que le diamètre du cylindre à contre-pression (8) est un multiple entier plus grand que chacun des rouleaux de transfert (26) des éléments d'impression (6.1,6.2,6.3,6.4) concourant respectivement avec lui et d'un entraînement motorisé pour l'unité d'impression (1), sachant que vu dans la direction de production du cylindre à contre-pression (8), dans la zone devant le premier élément d'impression (6.1), un rouleau actionnable (33) est prévu, caractérisé en ce que l'écart entre le rouleau (33) et la surface de l'enveloppe du cylindre à contre-pression (8) est ajustable et en ce que le rouleau comporte au moins un nombre de cavités (36) parallèles à l'axe et un ou plusieurs revêtements de blanchet d'imprimerie (34) dans la surface de l'enveloppe.
  2. Unité d'impression polychrome rotative à feuilles (1) selon la revendication 1, caractérisée en ce que les cavités (36) sont ouvertes à une ou aux deux extrémités.
  3. Unité d'impression polychrome rotative à feuilles (1) selon la revendication 1, caractérisée en ce que les cavités (36) sont réalisées comme un canal.
  4. Unité d'impression polychrome rotative à feuilles (1) selon la revendication 1, caractérisée en ce que les cavités (36) sont réalisées comme un segment de cercle.
  5. Unité d'impression polychrome rotative à feuilles (1) selon les revendications 1 à 4, caractérisée en ce que dans les cavités (36) sont prévus des dispositifs pour fixer les extrémités du revêtement d'impression.
  6. Unité d'impression polychrome rotative à feuilles (1) selon les revendications 1 à 5, caractérisée en ce que le rouleau (33) est installé de manière pivotante dans les châssis latéraux (17, 18) et est entraîné.
  7. Unité d'impression polychrome rotative à feuilles (1) selon la revendication 1, caractérisée en ce que le rouleau (33) est entraîné par un engrenage par l'entraînement du cylindre à contre-pression (8).
  8. Unité d'impression polychrome rotative à feuilles (1) selon la revendication 1, caractérisée en ce que le rouleau (33) est entraîné par un moteur triphasé commandé par fréquence, fixé au châssis latéral.
EP20020016644 2001-07-25 2002-07-25 Dispositif de guidage de feuilles pour une unité d'impression polychrome d'une machine d'impression rotative à feuilles Expired - Lifetime EP1295718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10135383 2001-07-25
DE10135383 2001-07-25

Publications (2)

Publication Number Publication Date
EP1295718A1 EP1295718A1 (fr) 2003-03-26
EP1295718B1 true EP1295718B1 (fr) 2006-05-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020016644 Expired - Lifetime EP1295718B1 (fr) 2001-07-25 2002-07-25 Dispositif de guidage de feuilles pour une unité d'impression polychrome d'une machine d'impression rotative à feuilles

Country Status (3)

Country Link
EP (1) EP1295718B1 (fr)
DE (1) DE50206785D1 (fr)
ES (1) ES2263711T3 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1465386A (en) * 1919-10-11 1923-08-21 Hall Printing Press Company Sheet-smoothing device
DE3108807C2 (de) * 1981-03-07 1984-10-31 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogen-Rotations-Offsetdruckmaschine für wahlweise Schön- oder Schön- und Widerdruck
EP1205297A1 (fr) * 2000-11-11 2002-05-15 Torald Rohloff Unité d'impression polychrome pour une machine d'impression rotative à feuilles

Also Published As

Publication number Publication date
ES2263711T3 (es) 2006-12-16
DE50206785D1 (de) 2006-06-22
EP1295718A1 (fr) 2003-03-26

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