EP3683060B1 - Vorrichtung und verfahren zur druckbreitenkompensation - Google Patents

Vorrichtung und verfahren zur druckbreitenkompensation Download PDF

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Publication number
EP3683060B1
EP3683060B1 EP20151351.2A EP20151351A EP3683060B1 EP 3683060 B1 EP3683060 B1 EP 3683060B1 EP 20151351 A EP20151351 A EP 20151351A EP 3683060 B1 EP3683060 B1 EP 3683060B1
Authority
EP
European Patent Office
Prior art keywords
web
printing
printing unit
width
running direction
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.)
Active
Application number
EP20151351.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3683060A2 (de
EP3683060A3 (de
Inventor
Rainer Widmann
Peter Höringer
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 Goss Web Systems GmbH
Original Assignee
Manroland Goss Web Systems GmbH
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 Manroland Goss Web Systems GmbH filed Critical Manroland Goss Web Systems GmbH
Publication of EP3683060A2 publication Critical patent/EP3683060A2/de
Publication of EP3683060A3 publication Critical patent/EP3683060A3/de
Application granted granted Critical
Publication of EP3683060B1 publication Critical patent/EP3683060B1/de
Active legal-status Critical Current
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
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0009—Central control units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • 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
    • 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
    • B41F13/025—Registering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/06—Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5124—Stretching; Tentering
    • B65H2301/51242—Stretching transversely; Tentering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

Definitions

  • the invention relates to a web-fed printing machine for printing a web of printing material guided through the web-fed printing machine in one direction of travel, the web-fed printing machine having a feed device for the web of printing material, at least one printing unit with a cylinder group that is in operative connection with the web of printing material during printing for at least one-sided printing of the web of printing material, and at least one Includes image control device.
  • the invention also relates to a method for operating a web-fed printing machine, wherein a printing material web with a web width B is fed to at least one printing unit in a web running direction by means of a feed device, and wherein for at least one-sided printing of the printing material web, it is brought into operative connection with a cylinder group of the at least one printing unit , and wherein the web width B of the printing substrate web is reduced to an effective width b by means of at least one image control device.
  • the DE 10 2004 004 264 C5 discloses, for example, such a printing press equipped with image regulators and a method for compensating for the increase in width of the printing substrate web.
  • the DE 199 18 399 A1 teaches a web-fed printing machine in which a web width that changes due to tensile stresses between the printing units is compensated for by using an additional traction device in front of the first printing unit, in that a corresponding web tension is built up in the area in front of the first printing unit.
  • the DE 10 2015 112 780 A1 discloses a web printing machine in which the web width, which increases due to moisture absorption, is compensated by means of image regulators arranged after the first printing unit, the fan-out compensation process being carried out in an automated manner by detecting printed marks.
  • a completely different problem with the change in the width of the printing material arises when printing relatively elastic substrates such as, for example, printing sheet-like plastic films.
  • the web-shaped plastic film is unrolled from rolls by means of a feed device such as a roll changer or unwinder and, with or without separate means for building up a web tension, is fed to at least one printing unit in which the printing material is clamped between a pair of printing cylinders and printed while the printing cylinder is rotating will.
  • a feed device such as a roll changer or unwinder
  • Such Printing units with printing cylinders that are mechanically in contact with the printing material are used, for example, in offset printing, flexographic printing or gravure printing.
  • the printing material is usually printed with several printing units arranged one behind the other, so that the printing material web is clamped and conveyed by several cylinder groups for printing.
  • the invention is therefore based on the object of creating a solution with which the change in the width of the first printed image can be compensated.
  • the object is achieved by a device according to claim 1 and a method according to claim 3.
  • the device according to the invention comprises a web printing machine in which the at least one image control device, which includes at least one mechanical image regulator, which can be brought into operative connection with the printing substrate web and / or comprises at least one image regulator nozzle, viewed in the web direction LR, in front of the cylinder group of the first printing unit, seen in the web direction LR is arranged.
  • the method according to the invention relates to a method for operating a web-fed printing machine, in which the reduction of the web width B to an effective width b is carried out in front of the cylinder group of the first printing unit, seen in the web running direction.
  • Such a device and such a method has the advantage that it is possible to react directly to the respective printing substrate-specific expansion and the resulting constriction and thus width reduction of the printing substrate web without having to scale the first printing form a register or register printing of the respective process colors to each other is ensured.
  • an image control device is not only arranged in front of the first printing unit as seen in the direction of web travel, but in addition to this image control device, in front of the cylinder group at least one printing unit following the first printing unit in the direction of web travel, an image regulator is also arranged downstream in the direction of web travel. It is thus possible to react to changing web tension conditions within the printing unit assembly, for example resulting from different printing processes, and to adapt the effective web width B within the printing unit assembly.
  • Fig. 1 shows a top view of the printing material web 2 in the area of a web printing machine 1 known from the prior art, in which the printing material web 2 is in operative connection with a cylinder group 5 and is printed on at least one side with a printing or process color via at least one of the printing cylinders of the cylinder group 5 will.
  • the cylinder group 5 consists either of a plate cylinder for receiving the printing form, a transfer cylinder, which is covered with a printing blanket and an impression cylinder, or a pair of plate and transfer cylinders each on the top and bottom of the web.
  • the printing substrate web 2 is thus clamped by the cylinder groups 5 of the usually plurality of printing units arranged one after the other in the web running direction LR and transported by the rotation of the printing cylinders, whereby a corresponding web tension is built up.
  • at least one printing unit 4 at least one component for conveying the web is usually also arranged, so that the effect described below can also be determined in such a case.
  • Fig. 1 shows this effect known from the prior art web printing machines 1 in the form of a view perpendicular to the plane spanned by the printing substrate web 2 in the area before and after the first printing unit 4-1, seen in the web running direction LR.
  • the printing substrate web 2 is fed to the first printing unit 4-1 in the web running direction LR and runs through it, the printing substrate web 2 in operative connection with the in Fig. 1 cylinder group 5 (not shown) of the first printing unit 4-1 is standing and is thus printed with a first printing or process color. Viewed in the web running direction LR, the printing material web 2 is thus printed on at least one side, which is shown in FIG Fig. 1 is shown schematically by text fields and a graphic.
  • the printing material web 2 is fed to the first printing unit 4-1 with the original web width B, due to the nip inside the first printing unit 4-1 and the usually higher web tension from the first printing unit 4-1, the printing material web 2 constricts so that after the first printing unit 4-1, the printing substrate web 2 has an effective width b that is reduced compared to the original web width B.
  • the reduction in web width B is usually in the range from a few per mille to low percentage values, based on web width B, but this is sufficient for a visual impairment of the printed image.
  • this printing substrate web 2 is provided with a printing substrate web 2 of a subsequent, in Fig. 1 If the printing unit 4-2, not shown, is supplied, there are deviations in the register or register if the printing forms of the first printing unit 4-1 and the second printing unit 4-2 have the same width.
  • Fig. 2 shows a web printing machine 1 according to the invention, with which the in Fig. 1 phenomenon is eliminated.
  • the web-fed printing machine 1 shown as an example is essentially a web-fed printing machine 1, as is essentially known from the prior art and is used for printing a printing material web 2 guided through the web-fed printing machine 1 in a web travel direction LR.
  • the printing material web 2 is fed to the printing units 4 by means of a feed device 3; reel changers or unwinders are usually used as the feeding device 3, in which the printing material web 2 is unwound from a roll.
  • the feed device 3 also comprises elements for laterally aligning the printing material web 2 and / or for building up a defined web tension, such as an infeed unit.
  • the printing substrate web 2 is fed with the web running direction LR to a plurality of printing units 4 arranged one behind the other as seen in the web running direction LR.
  • the in Fig. 2 In the example shown, four printing units 4 are arranged one behind the other, the number of printing units 4 can also be correspondingly larger or smaller.
  • Each printing unit 4 comprises a cylinder group 5, which in the in Fig. 2
  • the example shown consists of a forme cylinder and a transfer cylinder on the upper side of the web and an impression cylinder on the underside of the web.
  • the design of the cylinder group 5 can also deviate from the in Fig. 2 be configured in the example shown, for example for double-sided offset printing, for gravure printing or for example with a central cylinder and therefore satellite-shaped forme and transfer cylinders, as is known from flexographic printing.
  • the printing material web 2 is clamped by each cylinder group 5, since a corresponding pressure must prevail for the transfer of the printing or process color to the printing material.
  • the present invention can also be applied to any other configuration of a web printing machine 1, for example a web printing machine 1 with vertical web guidance, in which the printing units 4 are arranged one above the other.
  • the web-fed printing press 1 according to the invention shown further comprises an image regulating device 6 which comprises a plurality of image regulators 7 which are arranged next to one another and are generally distributed over the web width B.
  • These image regulators 7 can either be designed as mechanical image regulators 7 in the form of rotatably mounted rollers, which are brought into contact with the printing substrate web 2 in the form so that the printing substrate web 2 remains.
  • the image regulators 7 can alternatively also be designed as nozzles to which compressed air is applied and thus as image regulator nozzles 7, so that there is no longer any direct mechanical contact between the printing substrate web 2 and each image regulator 7, since there is between each image regulator 7 and the printing substrate web 2 an air cushion builds up.
  • the image control device 6 is arranged in front of the cylinder group 5 of the first printing unit 4-1, seen in the web direction LR, as seen in the web direction LR, so that the printing material web 2 is already in front of the very first cylinder group 5 and thus in front of the very first cylinder group 5 by means of an image control device 6 lingers and is thereby narrowed in its effective width b.
  • the image control device 6 is arranged in front of the first printing unit 4-1, viewed in the direction of web travel LR. Albeit in Fig. 2 not shown, it is also possible to arrange the image regulating device 6 relatively just in front of the cylinder group 5 of the first printing unit 4-1 and thus, in spatial terms, already within the contour of the first printing unit 4-1.
  • Fig. 3 represents a top view of the printing substrate web 2 in the area around the first printing unit 4-1 and shows the effect of the method carried out with the web printing machine 1 according to the invention.
  • FIG. 3 The basic structure of the in Fig. 3
  • the illustrated section of the printing substrate web 2 in the area before and after the first printing unit 4-1 is identical to that in FIG Fig. 1 shown excerpt, albeit with the result of the method according to the invention, so that a repetition of the area of the web-fed printing machine 1 shown there is dispensed with at this point.
  • FIG. 3 shows Fig. 3 the image regulating device 6, which is covered in this view by the printing substrate web 2 and therefore shown in dashed lines, with the corresponding five image regulators 7, shown by way of example, which, viewed in the web running direction LR, are in front of the in FIG Fig. 3 cylinder group 5, not shown, of the first printing unit 4-1, viewed in the direction of web travel LR, is arranged.
  • the printing material web 2 fed by the feed device 3 is curled with the web width B in front of the cylinder group 5 of the first printing unit 4 - 1 by means of an image control device 6.
  • the effective width b projected onto the plane spanned by the printing substrate web 2 is therefore smaller than the original web width B, so that the still unprinted printing substrate web 2 is narrowed in the top view and thus in the projected plane.
  • the The deflection and thus the curling of the printing substrate web 2 can be adjusted by adjusting the image regulator 7 of the image regulating device 6 so that the effective width b in front of the cylinder group 5 of the first printing unit 4-1 is preferably identical to the effective width b after the first printing unit 4- 1, so that the print images, which are all applied to a printing substrate web 2 with an identical effective width b by the usually plurality of printing units 4 arranged one behind the other, and thus do not have any register or register discrepancies between the respective process colors.
  • Fig. 4 shows an advantageous embodiment of a web printing machine 1, in which the at least one image control device 6 is arranged in addition to the first printing unit 4-1 seen in the direction of web travel LR also in front of the cylinder group 5 of at least one of the first printing units 4-1, seen in the direction of web travel LR downstream printing unit 4 .
  • an image regulating device 6 is arranged in front of the cylinder group 5 of the first printing unit 4-1 and, in addition, an image regulating device 6 is arranged in front of the cylinder group 5 of the third printing unit 4-3.
  • an image control device 6 is additionally in front of the cylinder group 5 of the first printing unit 4-1 also in front of the cylinder group 5 of the second printing unit 4-2 and / or in front of the cylinder group 5 of the third printing unit 4-3 and / or in front the cylinder group 5 of the fourth printing unit 4-4 and possibly subsequent, not graphically illustrated further printing units 4 can be arranged.
  • Fig. 5 shows a schematic view of the image control device 6 in the web running direction LR in an embodiment in which an image control device 6 is arranged on the underside of the printing substrate web 2 and the printing substrate web 2 is thus corrugated in the form of a circular arc segment.
  • the printing substrate web 2 in order to reduce the original web width B to an effective width b, the printing substrate web 2 is deflected in one direction in relation to the plane spanned by the printing substrate web 2.
  • the image control device 6 has, for example, five image regulators 7, the number of image regulators 7 generally not being decisive and in practice can vary between two and ten, which is essentially dependent on the web width B and the printing material.
  • Fig. 6 shows a schematic view in the direction of web travel LR comparable to FIG Fig. 5 in another embodiment, in which the printing substrate web 2 is dwelled on the top and bottom of the printing substrate web 2 by a respective image control device 6.
  • the printing substrate web 2 in order to reduce the original web width B to an effective width b, the printing substrate web 2 is deflected in both directions in relation to the plane spanned by the printing substrate web 2.
  • the upper image control device 6 has two image regulators 7 and the lower image control device 6 has three image regulators 7, the number of image regulators 7 generally not being decisive and can vary in practice between two and ten, which is essentially dependent on the Web width B and the substrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP20151351.2A 2019-01-16 2020-01-13 Vorrichtung und verfahren zur druckbreitenkompensation Active EP3683060B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019101024.1A DE102019101024A1 (de) 2019-01-16 2019-01-16 Vorrichtung und Verfahren zur Druckbreitenkompensation

Publications (3)

Publication Number Publication Date
EP3683060A2 EP3683060A2 (de) 2020-07-22
EP3683060A3 EP3683060A3 (de) 2020-07-29
EP3683060B1 true EP3683060B1 (de) 2021-09-29

Family

ID=69159612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20151351.2A Active EP3683060B1 (de) 2019-01-16 2020-01-13 Vorrichtung und verfahren zur druckbreitenkompensation

Country Status (4)

Country Link
EP (1) EP3683060B1 (zh)
CN (1) CN111439023B (zh)
DE (1) DE102019101024A1 (zh)
ES (1) ES2893798T3 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021203049A1 (de) 2021-03-26 2022-09-29 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501373U1 (de) * 1995-01-30 1995-04-27 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zur Korrektur des Fan-Out-Effekts an Rollenrotationsdruckmaschinen
DE19535632C2 (de) * 1995-09-25 2002-02-28 Wifag Maschf Vorrichtung zur Verhinderung von Registerabweichungen beim Bedrucken einer in einer Rotationsdruckmaschine laufenden Bedruckstoffbahn
EP0951993B1 (de) * 1998-04-22 2002-09-04 Maschinenfabrik Wifag Registerhaltiger Antrieb eines Druckzylinders oder einer Schnittregisterwalze einer Rotationsdruckmaschine
DE10311219A1 (de) * 2003-03-14 2004-09-30 Werner Kammann Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bedrucken einer Bahn
JP4276463B2 (ja) * 2003-04-10 2009-06-10 東芝機械株式会社 輪転印刷機の追い刷り装置および追い刷り方法
DE102004004264C5 (de) 2004-01-28 2011-02-24 Koenig & Bauer Aktiengesellschaft Verfahren zur Kompensation einer Querdehnung und/oder einer Längsdehnung eines Bedruckstoffes und Druckmaschine mit mehreren mindestens ein Druckbild auf einem Bedruckstoff erzeugenden Druckwerken
DE102008043767A1 (de) * 2008-11-14 2010-06-02 Koenig & Bauer Aktiengesellschaft Druckmaschine und Verfahren zur Handhabung einer durch die Druckmaschine geführten Bahn
JP2014516823A (ja) * 2011-04-29 2014-07-17 マンローラント・アーゲー 回転式オフセット印刷機、及び基材に印刷するための方法
DE102011121319A1 (de) * 2011-12-16 2013-06-20 Gallus Stanz- Und Druckmaschinen Gmbh Tiefdruckwerk mit Bahnspannungsausgleich und Verfahren zum Warten eines solchen Tiefdruckwerks
DE102015112780A1 (de) * 2015-08-04 2017-02-09 Manroland Web Systems Gmbh Fan-Out-Aktoren
DE102017215110B4 (de) * 2017-08-30 2020-05-14 Koenig & Bauer Ag Vorrichtung zur Kompensation von Fanout

Also Published As

Publication number Publication date
CN111439023A (zh) 2020-07-24
EP3683060A2 (de) 2020-07-22
EP3683060A3 (de) 2020-07-29
ES2893798T3 (es) 2022-02-10
CN111439023B (zh) 2024-03-05
DE102019101024A1 (de) 2020-07-16

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