EP0649740B1 - Unité d'impression pour une machine d'impression à bobine - Google Patents

Unité d'impression pour une machine d'impression à bobine Download PDF

Info

Publication number
EP0649740B1
EP0649740B1 EP94810519A EP94810519A EP0649740B1 EP 0649740 B1 EP0649740 B1 EP 0649740B1 EP 94810519 A EP94810519 A EP 94810519A EP 94810519 A EP94810519 A EP 94810519A EP 0649740 B1 EP0649740 B1 EP 0649740B1
Authority
EP
European Patent Office
Prior art keywords
printing
cylinders
cylinder
saddle
web
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
EP94810519A
Other languages
German (de)
English (en)
Other versions
EP0649740A1 (fr
Inventor
Joachim Alfred Heinz Lapp
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 EP0649740A1 publication Critical patent/EP0649740A1/fr
Application granted granted Critical
Publication of EP0649740B1 publication Critical patent/EP0649740B1/fr
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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/04—Conveying or guiding webs through presses or machines intermittently

Definitions

  • the invention relates to a printing unit for a web press according to the preamble of Claim.
  • Printing units in which those forming the printing nip Cylinders like the cylinders of sheet-fed printing machines have pressure saddles separated by cylinder pits and the paper web in the so-called mit step is transported are in DE-31 35 696C3 and described in EP-A-0 415 881.
  • These well-known Printing units are either offset printing units with two interacting rubber cylinders, both with Print images are colored and used for production a perfecting, or intaglio printing with a plate cylinder that with a Pressure cylinder cooperates.
  • the print format change consists in the fact that an equally large pressure plate with a shorter print image is spanned, ie the pressure zone remains the same and is not shortened.
  • Figure 1 shows the beginning of a printing operation and Figure 2 shows the end of this printing operation after the cylinders in the direction of the arrow are one of the length D have turned the angle corresponding to the pressure zone.
  • the means if the circumferential length of the printed image is practical is equal to the circumferential length of a saddle, then the paper web 7 after each printing operation if it freely moves the cylinder pits 3, 6, so slowed down, pulled back and accelerated again that, depending on the printing speed, the realizable delay and Acceleration as well as the time in which the pit is going through is approximately the same when the print is used again occupies the same position relative to the pressure gap, which she had taken before the civilage.
  • the paper web can be changed after the end of the Print image will not be delayed immediately, but will transported at print speed before the Pilgrim step can use. This way, as mentioned, are additionally withdrawn in the vocational step.
  • the paper web is especially used in intaglio printing due to the very high pressure of up to 80 t per meter web width can be, and the high-gloss chrome-plated Surface of the pressure plate compressed in such a way that after withdrawing the pressed, but section Z of the paper web not printed with color in the subsequent printing process with poorer quality is printed as the non-pressed web.
  • the Figures 1 and 2 are the too much pressed web section Z and the section of the double pressure P illustrated. The pressure of section Z in Figure 1 is stirring from the previous printing process.
  • the two that form the pressure gap Cylinders, transfer cylinders and impression cylinders are with a pressure cover or a counter pressure cover provided, which extends only over part of the circumference of the relevant cylinder, especially over half Scope, stretches, while the remaining scope is not one forming depression, the depth of which corresponds to the thickness of the Pressure reference or counter pressure reference corresponds.
  • the Transfer cylinder and the impression cylinder angular with respect to the position of their in the pressure gap cooperating, the pressure calipers, each according to the format to be printed, a circumferential distance offset to each other, which at least approximately equal to the difference between the Circumferential length of a pressure caliper and the circumferential length of a print image, so the length of the print zone, along which two pressure saddles when passing the Pinch the paper web between them, only at least approximately as big as that Circumferential length of a printed image is.
  • the object of the present invention is to achieve this based on the in the preamble of Features specified in a known Web printing machine according to FR-A-2309337, for one given angular displacement of the two Pressure gap forming cylinder the length of the pressure zone and automatically determine their angular position, so that the movement of the paper web as a function of this both sizes in the corresponding vocational step operation is controllable.
  • Figures 1 and 2 illustrate, as already mentions the printing operation of a known sheet-fed printing unit when printing on a paper web that is in the Pilgrimage is transported and
  • Figures 3 and 4 illustrate a printing unit according to the invention and its operation, wherein Figure 3 the start of a printing operation and Figure 4 the end this printing operation shows after both Cylinder at an angle corresponding to the pressure zones D. have turned.
  • Cylinders 1 and 4 are, for example around the plate cylinder 4 and the impression cylinder 1 of an intaglio printing unit.
  • the direction of rotation of the cylinders is indicated by curved arrows.
  • Both Cylinders have three equal sizes along their circumference Equidistantly arranged pressure saddles 2 and 5 with the Circumferential length S, which by cylinder pits 3 or 6 with the circumferential length G are separated from each other.
  • S Circumferential length
  • G are separated from each other.
  • the Print image on the printing plates has a circumferential length B, which is less than the length S of the pressure saddle in question 5 is.
  • the pressure plates are so stretched that the end E of the printed image with the in the direction of rotation rear end of the pressure saddle 5 coincides while the beginning A of the printed image B corresponding to the beginning of the pressure saddle 5 is offset.
  • the impression cylinder is 1st angularly adjusted with respect to the plate cylinder 4, that those interacting in the pressure gap Pressure calipers 2 and 5 of both cylinders against each other are offset that the circumferential length D of Pressure zone in which the interacting pressure saddles pinch the paper web 7, just do that printing format, i.e. the circumferential length B of the Print image, includes.
  • the circumferential length B of the Print image includes.
  • this is in the direction of rotation front end of the printing saddle 2 of the printing cylinder 1 opposite the front end of the pressure saddle 5 um offset a section which is equal to the difference S - B is.
  • the size is this displacement a little bit less.
  • the pinching area of the web during the printing operation is substantially shortened to the circumferential length B of the format to be printed and thus the length of the pressure-free zone G + (S - B) is enlarged, more time is available for retracting the paper web, that is, for decelerating and accelerating.
  • the paper web does not need to be pulled back, since it becomes free immediately after the end of the printed image and can be delayed.
  • the essential thing is that the paper web is only clamped immediately before the start A of the printed image and is released again immediately after the end E of the printed image. This has the advantage that with constant deceleration and acceleration torques that are caused by the drive, the machine speed can be increased by the extended pressure-free zone. The shorter repetition length with a smaller print image can therefore be compensated for by a higher speed.
  • the smaller the length B of the printed image the larger the pressure-free zone that is available for retracting the correspondingly larger paper web section.
  • Another advantage is that at no additional paper web section during a printing process is pressed outside the printed image and therefore a double pressing according to the double pressed Section P of the paper web according to FIG. 2 is omitted, see above that a deterioration in quality is avoided.
  • plate cylinder and cylinder 4 be the impression cylinder.
  • the beginning begins A of the printed image with the front one in the direction of rotation End of the pressure saddle of the plate cylinder together, and it is this plate cylinder that is opposite offset to the direction of rotation with respect to the pressure cylinder is.
  • the print image must be on a Printing plate either with its beginning A with the beginning of the pressure saddle in question or with its end E coincide with the end of the pressure saddle in question.
  • the length D and the angular position of the print zone can be determined automatically. This is shown in the example according to Figures 3 and 4 on the circumference of the printing cylinder 1 a trigger member K is attached so that it then exactly at a permanently installed initiator or sensor I, which responds to this organ, moved past when the beginning of the pressure zone, i.e. the Start A of the printed image, the connecting line happens between the axes of both cylinders 1 and 4; this position is shown in Figure 3.
  • sensor I responds, a signal is generated that in a counter by a plate cylinder 5 attached encoder in the form of a pulse encoder is controlled, keeps a meter reading and this saves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Unwinding Webs (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (1)

  1. Unité d'impression pour une machine d'impression à la bobine avec deux cylindres (1,4) coopérant et formant la fente d'impression, lesquels comportent plusieurs secteurs d'impression (2,5) séparés par des encoches n'imprimant pas pour imprimer avec des formats variables consécutifs une bande (7) passant dans la fente d'impression, la bande étant déplacée à une vitesse variable à la manière d'un pas de pèlerin et étant retirée et accélérée au passage d'une encoche relativement à la circonférence des deux cylindres après chaque opération d'impression de telle manière que des images successives imprimées se suivent pratiquement sans espace, et les deux cylindres (1,4) pouvant être déplacés angulairement l'un par rapport à l'autre respectivement aux secteurs d'impression (2,5) coopérant dans la fente d'impression, en fonction du format, d'une distance périphérique qui est au moins approximativement égale à la différence entre la longueur périphérique (S) d'un secteur d'impression (2,5) et la longueur périphérique (B) d'une image imprimée, de sorte que la longueur de la zone d'impression, le long de laquelle deux secteurs d'impression pincent la bande entre eux lors du passage de la fente d'impression, est au moins approximativement aussi grande que la longueur périphérique (B) d'une image imprimée, caractérisée en ce que les cylindres (1,4) comportent, à la manière des cylindres d'une machine d'impression à la feuille, des fosses (3,6) formant les encoches, en ce que un premier organe de déclenchement (K) est fixé sur la périphérie du cylindre (1) sur lequel le début d'un secteur d'impression (2), par rapport à la direction de rotation du cylindre, correspond au début d'une image imprimée, et un premier capteur (I) qui est activé par cet organe de déclenchement est installé à proximité de la périphérie de ce cylindre, en ce qu'un deuxième organe de déclenchement (L) est fixé sur la périphérie de l'autre cylindre (4) sur lequel la fin d'un secteur d'impression correspond à la fin d'une image imprimée, et un deuxième capteur (M) qui est activé par cet organe de déclenchement est installé à proximité de la périphérie de ce cylindre, en ce que lesdits organes de déclenchement et capteurs sont prévus et disposés de telle manière qu'au moment où le début d'un secteur d'impression (2) du premier cylindre (1) passe la ligne de liaison entre les axes des deux cylindres (1,4) le premier capteur (I) émet un premier signal et au moment où la fin du secteur d'impression (5) du deuxième cylindre (4) coopérant avec ledit secteur d'impression passe ladite ligne de liaison, le deuxième capteur (M) émet un deuxième signal, lesdits signaux et le temps entre les deux signaux représentant une mesure de la position angulaire et de la longueur de la zone d'impression qui sert à commander le mouvement de la bande de papier (7) au passage d'une zone sans impression selon un pas de pèlerin.
EP94810519A 1993-09-17 1994-09-08 Unité d'impression pour une machine d'impression à bobine Expired - Lifetime EP0649740B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2804/93 1993-09-17
CH280493 1993-09-17

Publications (2)

Publication Number Publication Date
EP0649740A1 EP0649740A1 (fr) 1995-04-26
EP0649740B1 true EP0649740B1 (fr) 1998-07-08

Family

ID=4241967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810519A Expired - Lifetime EP0649740B1 (fr) 1993-09-17 1994-09-08 Unité d'impression pour une machine d'impression à bobine

Country Status (9)

Country Link
EP (1) EP0649740B1 (fr)
JP (1) JP3464536B2 (fr)
KR (1) KR100336921B1 (fr)
CN (1) CN1051281C (fr)
AT (1) ATE168071T1 (fr)
AU (1) AU7290994A (fr)
CA (1) CA2117665C (fr)
DE (1) DE59406405D1 (fr)
RU (1) RU2114741C1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2328501B (en) * 1996-04-12 1999-12-08 Mark Baker Ventilation fans
JPH10116050A (ja) * 1996-10-14 1998-05-06 Sony Corp 輪郭補正回路およびｒｇｂモニタ
JP4740314B2 (ja) * 2005-03-30 2011-08-03 ゴス インターナショナル アメリカス インコーポレイテッド 枢着されたタッカを備えるウェブオフセット印刷機
EP2722179A1 (fr) * 2012-10-18 2014-04-23 KBA-NotaSys SA Presse d'impression en héliogravure et procédé de surveillance de fonctionnement de celle-ci
CN105015156B (zh) * 2015-07-22 2018-06-26 河北海贺胜利印刷机械集团有限公司 间歇式正向跳步印刷机及其控制方法和跳步牵引装置
DE102016207398B3 (de) * 2015-09-09 2016-08-18 Koenig & Bauer Ag Maschinenanordnung zum sequentiellen Bearbeiten mehrerer bogenförmiger jeweils eine Vorderseite und eine Rückseite aufweisender Substrate
RU2624717C1 (ru) * 2016-03-11 2017-07-05 Закрытое акционерное общество "Санкт-Петербургская Образцовая Типография" Способ изготовления клише для тиснения
CN107297947B (zh) * 2017-06-26 2022-08-09 浙江炜冈科技股份有限公司 新型间歇式胶印机
CN108002013B (zh) * 2017-12-22 2024-05-24 宜宾丝丽雅股份有限公司 一种粘胶长丝投料装置
CN108327387B (zh) * 2018-03-22 2024-04-26 东莞市鸿程机械有限公司 一种滚筒式织带多色印刷设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645203A (en) * 1969-10-02 1972-02-29 Fred M Slavic Press for web printing having intermittent paper-feeding means
FR2309337A1 (fr) * 1975-04-29 1976-11-26 Seailles Tison Atel Const Meca Dispositif a differentiel pour commander le defilement d'une nappe a imprimer dans une machine d'impression rotative
US4137624A (en) * 1977-10-31 1979-02-06 Amp Incorporated Apparatus for inserting wires into terminals in a connector
FR2454369A1 (fr) * 1979-04-18 1980-11-14 Codimag Procede et dispositif pour commander le defilement d'une nappe dans une machine d'impression
EP0084939A1 (fr) * 1982-01-20 1983-08-03 Rofrep Limited Procédé et dispositif d'impression à intervalles de répétition variables
GB2190042B (en) * 1986-05-01 1990-11-21 Rofrep Ltd Printing of successive images onto an elongate web.
US5062360A (en) * 1989-08-30 1991-11-05 De La Rue Giori S.A. Combined rotary web-fed printing machine, especially for the printing of securities

Also Published As

Publication number Publication date
ATE168071T1 (de) 1998-07-15
KR950008126A (ko) 1995-04-17
CA2117665A1 (fr) 1995-03-18
AU7290994A (en) 1995-03-30
EP0649740A1 (fr) 1995-04-26
CA2117665C (fr) 2006-01-10
CN1116986A (zh) 1996-02-21
JP3464536B2 (ja) 2003-11-10
RU94033483A (ru) 1996-06-27
JPH07148913A (ja) 1995-06-13
DE59406405D1 (de) 1998-08-13
CN1051281C (zh) 2000-04-12
KR100336921B1 (ko) 2002-11-27
RU2114741C1 (ru) 1998-07-10

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