EP0835180A2 - Rotative offset a feuilles - Google Patents

Rotative offset a feuilles

Info

Publication number
EP0835180A2
EP0835180A2 EP96918598A EP96918598A EP0835180A2 EP 0835180 A2 EP0835180 A2 EP 0835180A2 EP 96918598 A EP96918598 A EP 96918598A EP 96918598 A EP96918598 A EP 96918598A EP 0835180 A2 EP0835180 A2 EP 0835180A2
Authority
EP
European Patent Office
Prior art keywords
printing
cylinder
sheet
inking
onsdruc
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
EP96918598A
Other languages
German (de)
English (en)
Other versions
EP0835180B1 (fr
Inventor
Hans-Bernhard BOLZA-SCHÜNEMANN
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Priority to EP98118431A priority Critical patent/EP0899095B1/fr
Priority to EP98118430A priority patent/EP0899096B1/fr
Publication of EP0835180A2 publication Critical patent/EP0835180A2/fr
Application granted granted Critical
Publication of EP0835180B1 publication Critical patent/EP0835180B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/02—Rotary letterpress machines for printing on sheets
    • 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
    • B41F31/027—Ink rail devices for inking ink rollers
    • 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
    • B41F7/08—Rotary lithographic machines for offset printing using one transfer cylinder co-operating with several forme cylinders for printing on sheets or webs, e.g. sampling of colours on one transfer cylinder
    • 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
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/70—Forming the printing surface directly on the form cylinder

Definitions

  • the invention relates to a
  • the invention has for its object to provide a Bogenrotat i onsoff setdruc kmaschi ne.
  • Sheetfed offset rotary printing press achieves multi-color printing with a register of the highest accuracy, since the sheets to be printed are held on a printing cylinder in a single gripper system during all printing processes. The printed sheets are only taken over by another gripper system and removed from the printing cylinder after the sheet has been completely printed.
  • the sheets to be fed are opened from the stand
  • the short inking units without ink zones minimize makeready times and simplify operation of the printing press.
  • the short inking units enable a very small overall size of the entire printing press.
  • the short inking units are only with each a printing surface of the forme cylinder in contact, so that in the parked state there is a multiple rollover only against an anilox roller.
  • An existing color relief in the circumferential direction is reduced by different diameters of applicator roller and anilox roller.
  • the anilox roller interacts with a chambered doctor blade, which completely removes the remains of the color relief and creates a completely uniform ink film on the anilox roller.
  • Damping units are omitted when using plates suitable for dry offset, so that known problems caused by dampening solutions, such as emulsification or reinforced stencils, cannot arise.
  • the investment pile and delivery pile are on one side, which improves usability.
  • the side to be printed of the sheets to be fed is at the bottom, while the printed side is at the top of the discharged sheets of the delivery stack. As a result, it is not necessary to turn the stacks after the straight printing in order to reprint the sheets.
  • the sheetfed offset rotary printing press according to the invention is compact, minimizes makeready times, simplifies operation and nevertheless guarantees multi-colored, stencil-free quality prints with excellent registers. This makes it suitable
  • Sheetfed offset printing presses especially for short runs in a range from 100 to 20,000 sheets.
  • at least double inking of the inking roller is achieved in that the circumferential length of the printing surface to be inked is less than or equal to a circumferential length of the associated inking roller.
  • Fig. 1 is a schematic side view of the Bogenoff set rotat i onstikmaschi ne;
  • Fig. 2 is a schematic representation of a cam gear for controlling inking rollers.
  • a shed feeder 1 is connected upstream of a sheet-fed machine 2 to a sheet-fed offset rotary printing machine.
  • This sheet system 2 is mounted in side frames 3, 4 of the sheetfed offset rotary printing machine and essentially consists of a side alignment device, for example a suction mark 6, a sheet feeder device 7 and front marks 8, 9.
  • the sheet feeder nri Attention 7 executed as a rotating stop drum 7 with the circumference two gripper systems 12, 13 offset by 180 ° and extending in the direction of an axis of rotation 11 of the stop drum 7 are provided.
  • a row, ie at least two, front marks 8, 9 are arranged in the area of these gripper systems 12, 13 a row, ie at least two, front marks 8, 9 are arranged.
  • the stop drum 7 is driven, for example, synchronized to the machine cycle by means of a non-actuated electronic ro ri ebes, which accelerates the stop drum 7 from 180 degrees to the circumferential speed of a printing cylinder 14 within 180 ° and then up to brakes to the stand.
  • the sheet feed device 7 can also be designed as an oscillator or suction drum or can also work in several stages from combinations of suction drum and stop drum or oscillator and is arranged below the sheet to be fed.
  • the respective rubber cylinder 21, 22 can be fitted with two rubber blankets 28, 29 or 31, 32 corresponding to the associated printing surfaces 23, 24 or 26, 27 or with a single one, the two printing surfaces 23, 24 or 26 , 27 corresponding blanket.
  • Corresponding forme cylinders 33, 34 are assigned to these rubber cylinders 21, 22.
  • These printing surfaces 36, 37 and 38, 39 are formed, for example, by printing plate-bearing plates 41, 42 and 43, 44, each of these printing surfaces 36, 37 and 38, 39 of the forme cylinders 33, 34 having its own plate 41, 42 or 43, 44 or both printing surfaces 36, 37 or 38, 39 can be provided with a common plate which then carries two printing forms.
  • Special plates 41, 42, 43, 44 suitable for waterless offset printing are preferably used, so that dampening units can be dispensed with.
  • the sheetfed set rotati onsmaschi ne described works with planographic printing plates. But it is also possible to use high pressure plates (letterset). With direct high pressure, the rubber cylinders 21, 22 can be omitted.
  • Each forme cylinder 33, 34 has its own laser writing system 46, 47 for direct imaging suitable plates 41, 42, 43, 44 assigned. This
  • Plates 41, 42, 43, 44 are located in front of the image on the forme cylinders 33, 34 and can
  • Forme cylinders 33, 34 are fed individually. But it is also possible to use the forme cylinder 33, 34
  • Rubber and forme cylinders 21, 22 and 33, 34 can each be equipped with more than two printing surfaces.
  • the printing cylinder 14 then z. B. a
  • Gripper system carries more or less than the number of
  • Printing areas of a forme cylinder 33, 34 The number of
  • Gripper systems 17, 18, 19 of the printing cylinder 14 is not equal to the number of printing surfaces 36, 37 of the
  • the two laser writing systems 46, 47 are in the
  • a large number of independent laser diodes are located at a fixed location and are each with one end
  • Light guides are arranged closely next to one another on a slide, a large number (for example 64) of the light guides being aligned with each forme cylinder 33, 34.
  • the carriage is parallel to the longitudinal direction of the
  • Forme cylinders 33, 34 can be moved axially on the crossmember 48.
  • the two forme cylinders 33, 34 can be illustrated at the same time. It is also possible to dispense with the axially movable carriage and to arrange the light guide in a stationary manner, aligned with the respective forme cylinder 33, 34, in which case a number of light guides corresponding to the desired resolution of the pressure image is provided over an entire length of the forme cylinder 33, 34 is.
  • a single imaging system can also be arranged, which can optionally be assigned to both forme cylinders 33, 34, for example by means of a pivoting device, or the beams of which are deflected in such a way that both forme cylinders 33, 34 can be imaged.
  • Each of the printing surfaces 36, 37, 38, 39 of the two forme cylinders 33, 34 is provided with its own inking unit 49,
  • the inking units 49, 51, 52, 53 are designed as short inking units 49, 51, 52, 53.
  • These short inking units 49, 51, 52, 53 essentially each consist of an inking roller 54, 56, 57, 58 inking the printing surface 36, 37, 38, 39, a driven anilox roller 59, 61, 62, 63 a chambered doctor blade 64, 66, 67, 68 and a collecting trough 69.
  • the respective inking roller 54, 56, 57, 58 can also be designed to be driven, one with the Anilox roller 59, 61, 62, 63 common drive or its own independent, for example controllable drive can be provided.
  • a diameter d54, d56, d57, d58, e.g. B. 123 mm
  • a circumferential length of the printing surface 36, 37, 38, 39 to be inked is less than or equal to the circumferential length of the associated inking roller 54, 56, 57, 58.
  • the chamber doctor blade 64, 66, 67, 68 which has a working and closing doctor blade 71, 72, leads the Anilox roller 59, 61, 62, 63 printing ink, which is metered by means of the rake lblattes 71, excess ink that has been scraped off by the anilox roller 59, 61, 62, 63 by means of the respective optical rake Iblatt 72 is removed from the collecting tray 69 recorded and returned to a color cycle.
  • Anilox roller 59, 61, 62, 63 and rubberized inking roller 54, 56, 57, 58 are in constant contact with one another, while the inking roller 54, 56, 57, 58 synchronizes with the respective forme cylinder 33, 34 on the associated printing surface 36, 37, 38, 39 is adjustable.
  • the inking roller 54, 56, 57, 58 is mounted on both sides in single-arm levers 72, 73, 74, 76 which can be pivoted about the anilox roller 59, 61, 62, 63.
  • These levers 72, 73, 74, 76 can be mechanically, e.g. B. by means of a cam gear, or electrically, for. B.
  • a pressurizable working cylinder 78, 79, 81, 82 interacting solenoid valve l become.
  • conventional inking units provided with ink fountain and zone screws can also be used.
  • the inking rollers are in constant contact with the other inking rollers of the conventional inking unit and from the respective forme cylinder 33, 34, only the respective associated printing surface 36, 37, 38, 39 inking, can be turned on and off.
  • a sprocket shaft 84 having sprockets 83, which cooperates with the pressure cylinder 14, is arranged after the two rubber zy t, ends 21, 22.
  • a length l e.g. B.
  • one of two centers 85, 90 of the rubber cylinder 22 and pressure cylinder 14 or sprocket shaft 8 and pressure cylinder 14 limited circular arc 95 on the outer surface of the pressure cylinder 14 is greater than a length, for. B. 360 mm, the sheet at the maximum format allowed for this machine.
  • the sprocket shaft 84 carries a chain 86 of a chain gripper feraus Legers 87.
  • This chain 86 is z. B. four Kettengre i fersystemen 88, 89, 91, 92 equipped, with a distance a, z. B. 829 mm, two Kettengrei fersysteme 88, 89, 91, 92 to each other with a stretched chain 86 a circumferential length of a rubber or plate cylinder 21, 22 or 33, 34 corresponds.
  • This endless chain 86 designed in this way is deflected by a second sprocket shaft 93 and runs back to the pressure cylinder 14. This distance a can also be made smaller if the chain is non-uniform, for. B. slowed to the sheet deposit to run t.
  • the scale feeder 1 separates sheets from a stack 94 and feeds them to the stationary stop drum 7 via a suction belt table 96. There, a front edge of a first sheet 97 applied is aligned on the front marks 8 parallel to the axis of rotation 11 of the stop drum 7. Then the suction mark 6 detects the sheet 97 and aligns it laterally. After aligning the sheet 97, the gripping system 12 of the stop drum 7 closes and the stop drum 7 accelerates the sheet 97 from the stationary position to the peripheral speed of the printing cylinder 14. After reaching the peripheral speed, the gripper system 12 of the stop drum 7 transfers the sheet 97 to the first gripper system 17 of the printing cylinder 14.
  • the plate 41 of the forme cylinder 33 inked by the inking unit 49 for example with black printing ink, has its printing image on the Pressure surface 23 of the rubber cylinder 21 transferred.
  • the sheet 97 thus provided with a first printing image and the sheet 97 held by the gripper system 17 are transported to the second rubber cylinder 22.
  • the sheet 97 is printed with the second printing image from the printing surface 26 previously provided by means of the inking unit 52 and the plate 43 of the second forme cylinder 34 with a second printing image (for example in the printing ink “cyan”).
  • the second gripper system 18 of the printing cylinder 14 passed the stop drum 7 without picking up a sheet.
  • the third gripper system 19 now takes over a second sheet 98 from the second gripper system 13 of the stop drum 7, which was fed and aligned in the same way as the first sheet 97 of the stop drum 7.
  • This sheet 98 is also first printed by the printing surface 23 of the first rubber cylinder 21 bearing the printing image of the plate 41 and then by the printing surface 26 of the second rubber cylinder 22 supporting the printing image of the plate 43.
  • the first sheet 97 was conveyed past the sprocket shaft 84 and the stop drum 7 without opening the gripper system 17.
  • the sheet 97 now reaches the rubber cylinders 21 and 22 for the second time.
  • the sheet 97 is now printed by the second printing surface 24 with the third printing image, which is printed, for example, with the printing ink "magenta" plate 42 colored by the inking unit 51 was transferred to the printing surface 24.
  • the fourth printed image was transferred from the plate 44, which was inked, for example, with yellow printing ink by means of the inking unit 53, to the second printing surface 27 of the second rubber cylinder 22.
  • This printing area 44 prints the sheet 97 with the fourth printing image.
  • the second gripper system 18 in the meantime took over a third from the first gripper system 12 of the stop drum 7, sheet 99, which now, like the first and second sheets 97, 98, for the first time from the pressure surfaces 23 and 26 of the rubber cylinders 21 and 22 is printed.
  • the fully printed, provided with four Druckbi ldern first sheet 97 is after the end of the fourth printing process even at maximum format length, eg. B. 360 mm, taken from the Kettengre i fe rsystem 91 in the region of the sprocket shaft 84.
  • the gripper system 17 opens for the first time after the takeover of the unprinted sheet 97 from the first gripper system 12 of the stop drum 7, the sheet 97 has thus been printed in a gripper with four printing images.
  • This chain gripping system 91 transports the sheet 97 in the chain gripping device 87 to the area of a stack 101. There, the chain gripping system 91 opens and the sheet 97 is placed on the stack 101.
  • the now empty gripper system 17 then takes over a fourth sheet 102 from the gripper system 12 of the stop drum 7.
  • the second gripper system 18 transports the third, with two printing media printed sheets 99 past the sprocket shaft 84, while the second sheet 98, which is now provided with four printing media, is transferred to the chain gripping system 92 and transported to the stack 101.
  • cam gear 75 for starting and stopping the inking rollers 54, 56, 57, 58 can on each side, for example, essentially consist of a pair of cam disks 106, 107 and two cam rollers 108, 109 interacting with them and are exemplified using one Cam gear 75 of the forme cylinder 33 described.
  • the cams 106, 107 are rigidly attached to a pin 111 of the respective associated forme cylinder 33 and rotate with it.
  • each cam plate 106, 107 is in the circumferential direction with a circular arc-shaped depression 112, 113 adapted to the associated pressure surface 36, 37 and an opposite, circular arc-shaped elevation 114, 116, which curve by means of a gentle transition lying in the region of a channel of the forme cylinder 33 are connected.
  • the cam rollers 108, 109 are, for example, on a pin 117 or 118 of the inking roller 54 or 56 rotatably mounted.
  • the cam rollers 108, 109 of both inking rollers 54, 56 which cooperate in a spring-loaded manner with a forme cylinder 33, are offset from one another in the axial direction, so that each cam roller 108, 109 is assigned a cam plate 106, 107.
  • the elevation 114, 116 and the depression 112, 113 of the respective cam disk 106, 107 alternately act in such a way that during the coincidence of the depression 112, 113 with the cam roller 108, 109 starting and during the interaction of the elevation 114, 116 with the cam roller 108, 109 the inking roller 54, 56 is lifted off the forme cylinder 33.
  • Laser writing system Laser writing system Traverse Fa rbwe rk

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Registering Or Overturning Sheets (AREA)

Abstract

L'objet de l'invention est d'éviter des problèmes de repérage et d'obtenir une rotative offset à feuilles d'impression en couleurs de haute qualité de taille minimale. A cet effet, la rotative offset à feuilles comprend deux cylindres porte-clichés (33, 34) et porte-caoutchouc (21, 22) pourvus chacun d'au moins deux surfaces d'impression (36, 37, 38, 39) qui coopèrent avec un cylindre central d'impression (14) pourvu d'une surface d'impression de plus que les cylindres porte-clichés (33, 34), et les feulles (97, 98, 99) ne sont enlevées du cylindre d'impression (14) que lorsque l'impression est achevée.
EP96918598A 1995-06-30 1996-06-22 Rotative offset a feuilles Expired - Lifetime EP0835180B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98118431A EP0899095B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles
EP98118430A EP0899096B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19523378 1995-06-30
DE19523378A DE19523378A1 (de) 1995-06-30 1995-06-30 Bogenoffsetrotationsdruckmaschine
PCT/DE1996/001102 WO1997002143A2 (fr) 1995-06-30 1996-06-22 Rotative offset a feuilles

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP98118431A Division EP0899095B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles
EP98118430A Division EP0899096B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles

Publications (2)

Publication Number Publication Date
EP0835180A2 true EP0835180A2 (fr) 1998-04-15
EP0835180B1 EP0835180B1 (fr) 1999-12-22

Family

ID=7765385

Family Applications (3)

Application Number Title Priority Date Filing Date
EP96918598A Expired - Lifetime EP0835180B1 (fr) 1995-06-30 1996-06-22 Rotative offset a feuilles
EP98118431A Expired - Lifetime EP0899095B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles
EP98118430A Expired - Lifetime EP0899096B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP98118431A Expired - Lifetime EP0899095B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles
EP98118430A Expired - Lifetime EP0899096B1 (fr) 1995-06-30 1996-06-22 Machine rotative à feuilles

Country Status (8)

Country Link
US (2) US6050188A (fr)
EP (3) EP0835180B1 (fr)
JP (3) JP3266270B2 (fr)
CN (1) CN1077039C (fr)
BR (1) BR9609626A (fr)
DE (4) DE19523378A1 (fr)
RU (1) RU2156695C2 (fr)
WO (1) WO1997002143A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612045A1 (fr) * 2004-06-30 2006-01-04 Koenig & Bauer Aktiengesellschaft Dispositif pour positionner un courant de feuilles

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JP2001171074A (ja) 2001-06-26
BR9609626A (pt) 1999-09-28
WO1997002143A2 (fr) 1997-01-23
US6062136A (en) 2000-05-16
CN1190933A (zh) 1998-08-19
RU2156695C2 (ru) 2000-09-27
US6050188A (en) 2000-04-18
EP0899096B1 (fr) 2001-11-07
WO1997002143A3 (fr) 1997-03-27
DE19523378A1 (de) 1997-01-02
DE59608167D1 (de) 2001-12-13
EP0835180B1 (fr) 1999-12-22
CN1077039C (zh) 2002-01-02
EP0899095A1 (fr) 1999-03-03
JP3428959B2 (ja) 2003-07-22
DE59608860D1 (de) 2002-04-11
JP3330131B2 (ja) 2002-09-30
JPH10510490A (ja) 1998-10-13
EP0899095B1 (fr) 2002-03-06
DE59603986D1 (de) 2000-01-27
EP0899096A1 (fr) 1999-03-03
JP3266270B2 (ja) 2002-03-18
JP2001162770A (ja) 2001-06-19

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