EP2352643B1 - Presse a bobines a trajet vertical d'un marche d'une bande, sechage et mise en tension en sens travers - Google Patents

Presse a bobines a trajet vertical d'un marche d'une bande, sechage et mise en tension en sens travers Download PDF

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Publication number
EP2352643B1
EP2352643B1 EP09736216.4A EP09736216A EP2352643B1 EP 2352643 B1 EP2352643 B1 EP 2352643B1 EP 09736216 A EP09736216 A EP 09736216A EP 2352643 B1 EP2352643 B1 EP 2352643B1
Authority
EP
European Patent Office
Prior art keywords
web
printing
roller
dryer
former
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
EP09736216.4A
Other languages
German (de)
English (en)
Other versions
EP2352643A2 (fr
Inventor
Frank Peter Denninger
Tim Sven Ernst Heinisch
Burkard Otto Herbert
Werner Felix Scherpf
Thomas Josef Zipper
Georg Winfried Zitterbart
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 AG
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Filing date
Publication date
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Publication of EP2352643A2 publication Critical patent/EP2352643A2/fr
Application granted granted Critical
Publication of EP2352643B1 publication Critical patent/EP2352643B1/fr
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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
    • B41F13/025—Registering devices
    • 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
    • B41F23/02—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by dampening
    • 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
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • 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
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • 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
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0483—Drying combined with cooling
    • 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
    • B41F23/08—Print finishing devices, e.g. for glossing prints
    • 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
    • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • 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
    • B65H2301/514—Modifying physical properties
    • B65H2301/5142—Moistening
    • 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
    • B65H2301/517—Drying material
    • 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
    • B65H2301/52—Auxiliary process performed during handling process for starting
    • B65H2301/522—Threading web into machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/17—Deformation, e.g. stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • 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
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a printing machine, a method for using the printing press and a method for handling a web guided by a printing machine according to claims 1 and 16 or 19.
  • WO 2005/023690 A1 is a method for the reduction of registration errors, ie errors in the relative position of between two successive to be printed on the web pixels, known, at the entrance of the respective printing unit, a curved or curvable roller is provided.
  • a setting of the pass can be done by between two successive printing columns (printing units), a temperature increase by a dryer for shrinkage or introduction of moisture z. B. by means of saturated steam broadening.
  • US 44 04 906 A is a device for controlling the fan-out, ie the web broadening by the ingress of moisture during the printing process, known, wherein the web to be printed is guided over a curved roller before the first printing unit.
  • the EP 1 826 002 A2 discloses a printing machine with at least one printing unit, a downstream dryer, a cooling roller assembly, a Wiederbefeuchtung and a folder, wherein for controlling a web tension a positively driven cooling roller in its speed ratio to a downstream in the web driven positively driven Hauptzugwalze is changeable.
  • a device for preventing a wave formation in a printing machine wherein a web immediately before emergence on the first cooling roller of a cooling device by means of a spreading device one or more times is deflected in each opposite directions of curvature.
  • the DE 30 22 557 A1 discloses a cooling unit of a web-fed rotary printing press with a substantially vertical web run. To prevent wrinkling it is proposed to form now at least one cooling roller of the cooling unit with a diameter instead of known spreader rollers before trains, which increases from the center to the outside to substantially steadily.
  • WO 2007/020288 A1 discloses a printing machine having a first printing tower with a first, an offset printing unit for printing one or two sides of a first web having printing unit, a downstream of the first printing unit arranged on the web path dryer and a funnel structure with a traversed by the first web Compensating funnel and a folding hopper upstream draw roller has. It has next to a second printing tower with a second printing unit with an offset printing unit for printing on one or both sides of a second web, wherein means are provided for guiding the second web over which the second web can be guided or guided onto the at least one former without passing through a dryer or at least without passing through an activated dryer together with the first web.
  • EP 1 547 772 A1 is a sheetfed offset printing machine disclosed, wherein the substrate is first printed in corresponding printing units with oil-based offset inks and then in a downstream printing unit with oil-based matt lacquer, containing silicone lacquer coated.
  • the EP 1 518 805 A2 relates to a method for determining production-relevant material properties and to a method for presetting, whereby information can be ascertained in the printing press by means of appropriate variations for the elongation characterization and moisture sensitivity of the drawn web, and corresponding preset values for the web tension can be determined.
  • the invention has for its object to provide a printing machine, a method of using the printing press and a method of handling a web guided by a printing machine, which or the production of a defect-free, heatset-side having product, preferably using a modified newspaper printing press, possible.
  • the advantages that can be achieved with the invention are, in particular, that a product position which can be influenced within the limits of the image size and / or wrinkle-free produced in the heatset can be produced by the measures taken. This is particularly advantageous in a hybrid production of layers, which come partly from coldset webs and partly from heatset webs and are combined to form a common product.
  • the problem associated with printing in particular with heatset printing - in particular with hybrid printing - can be summarized as follows:
  • the web tension creates an extension of the fiber grating in the paper. This leads to the longitudinal expansion of the web with simultaneous contraction.
  • Both changes have both an elastic and a plastic part.
  • the registered humidity eg color, rewet
  • This part of the change is "frozen" during a drying process.
  • the rewetting depends on the amount of water offered, the principle of action, the surface tension, the residence time / exposure time and the water absorption capacity of the paper.
  • This z. B the effect of a spreading device used to expand the possibilities of increasing the web tension against wrinkling and against too low tension on the former.
  • the tension can be increased without damaging constriction and / or longitudinal folding.
  • a printing press has one or more first printing units 01 (printing units of a first type and / or printing units which can be operated or operated in a first operating mode), which in turn have one or more offset printing units for printing a first web B1 on one or both sides.
  • the first printing units 01 are designed as printing towers, which, as shown, two stacked H-printing units, z. B. have four bridge printing units for the two-sided printing, or two stacked satellite printing units.
  • the web B1 extends substantially vertically between the pressure points in the first printing units 01 and printing towers.
  • the printing machine can - for reasons of clarity not shown in the figures - have a plurality of first printing units 01 or first printing towers for printing first webs B1, which to increase the product thickness all or partially on the same hopper assembly 03, possibly even on the same former 04 , can produce.
  • a dryer 02 Downstream of the at least one first printing unit 01, a dryer 02, in particular a radiation dryer or thermal dryer, but preferably a thermal dryer 02, is provided for a so-called heatset operation on the web path.
  • the first printing unit 01 or first printing units 01 are executed in one embodiment as so-called.
  • the heatset color is z. B. by special oils, eg. As mineral oils, which evaporate when exposed to heat and thereby dry the printed web B1.
  • the mineral oils have, for example, a boiling range of 220 ° C to 320 ° C. You can have a color related weight fraction of about 25 to 40%. Since the paint does not have to knock off to dry it is also possible to print closed-pored paper surfaces.
  • the UV colors however, have components that under the Inherent influence of corresponding radiation (UV light).
  • the inking unit of the printing unit with special inks of waterless offset printing (dry offset) is operated or operated.
  • a printed by the printing unit 01 web 01 can be optionally performed by a dryer 02 or not (coldset), without requiring the color would have to be replaced.
  • Special heatset colors can be used here despite heatset operation, ie. H. the drying of the printed web B1, are dispensed with.
  • heatset operation is thus understood a mode in which the printed web 01 is treated by an (active) dryer 02.
  • a heatset web 01 is accordingly a web 01, which - after the partial or complete printing - is or will be treated by a dryer 02.
  • the first web 01 to be printed in the heatset process is preferably in the form of a heatset web 01 of satined and / or more coated paper having a coating weight of, for example, more than 5 g / m 2 , in particular more than 10 g / m 2 and / or with a grammage in the range of greater than 40 g / m 2 , z. B. in a grammage range of 55-90 g / m 2 formed.
  • the printing units of the first printing unit 01 and the first printing tower have z. B. a usable width for printing width, which corresponds to at least four, in particular four or six printed pages of a stationary newspaper format in broadsheet arrangement or a horizontal newspaper format in tabloid on the printing cylinders, ie they are in the jargon of the newspaper press "double width” or "three times wide” trained.
  • a usable width for printing width which corresponds to at least four, in particular four or six printed pages of a stationary newspaper format in broadsheet arrangement or a horizontal newspaper format in tabloid on the printing cylinders, ie they are in the jargon of the newspaper press "double width" or "three times wide” trained.
  • they are designed such that in at least one mode of operation they can carry or carry the printed images of at least four, in particular six lying or stationary newspaper pages in the axial direction next to each other.
  • a funnel structure 03 Downstream of the dryer 02, a funnel structure 03 is provided with at least one former 4 traversed by the first web B1.
  • the former 04 is at least one draw roller 06; 07, in particular at least one trained as a funnel roller 07 pull roller 07 upstream. Upstream can still another draw roller 06, z. B. a draw roller of a longitudinal cutting device 05 may be provided.
  • a multi-width (eg: double or triple) web 01 is printed and, before it runs on the funnel assembly 03, cut into one or two side wide sub-webs, and possibly a sub-web on a Reversible corner 10 with two turning bars offset laterally and / or should be overthrown.
  • a spreading device 08 On the path of the first web B1 is between the dryer 02 and the at least one upstream of the former 04 pull roller 06; 07, in particular upstream of the tension roller 06.
  • the spreader can be designed in any manner in which simultaneously directed on the web B1 outwardly directed force components in the opposite direction transverse to the direction to widen the web B1 in the transverse direction or at least to tension. If necessary, this can also be non-contact systems such. B. air nozzles.
  • a spreading apparatus is to be preferred whose spreading effect is variable or adjustable (in contrast, for example, to rolls whose spreading effect is predetermined solely by their solid surface texture and / or contour, at least by manual setting means, but advantageously by remotely controllable setting means is).
  • a spreader roller 08 is provided which z. B. as a rotatable roller with a deviating from a cylindrical surface curved, in particular banana-shaped, surface is formed.
  • the banana-shaped roller z. B. oriented so that the web B1 far predominantly with the convex side of the roller acts together.
  • a thickness of the spreading can be influenced by the fact that the curvature of the middle part of the roll dips deeper or less deeply into the plane of the incoming web B1.
  • the strength of the effect can also be influenced or adjusted by changing the radius of curvature (likewise by the strength of the immersion).
  • the lateral surface of the spreader roll 08 which cooperates with the web B 1, preferably has a surface texture which is significant with the web B 1 and is, for example, B. at least in the area of the surface of rubber.
  • the generatrices of the surface are in one revolution z. B. only stretched, (contact area with the train B1) and then compressed ("way back"). On the very grippy surface "sticks" the paper and is pulled apart on the expansion movement of the rubber jacket.
  • a moisture moistening or application device 09 applying to the first web B1; 11, in particular a working with water vapor or a coating solution device provided.
  • silicone unit 09 as applicator 09; 11 provided.
  • the silicone work 09 for local use with a particularly aqueous silicone solution, d. H. with respect to the usual solution further addition of water, be operated.
  • the "setting range" for the dampening training is between the dryer 02 and the spreading device 08 in addition to the first moistening or application device 09, z. B. downstream of a second moistening or application device 11, in particular a Wiederbefeuchtungs thanks, preferably in the construction of a second silicone unit 11.
  • the second moistening or application device 11 is preferably operated with a solution containing more water than the first moistening or application device 09 and may also be completely free of silicone (also in the case of the aforementioned type).
  • the second moistening or application device 11 is arranged structurally spaced in the web path of the first web B1, so that the solution applied by the first applicator 09 has sufficient time to penetrate the web B1.
  • the distance - at least the moistening or application devices 09 acting on a same web side; 11 - should z. B. at least 1 m, preferably at least 2 m, Bruweg amount.
  • the second moistening or application device 11 can also take place by means of an air-circulated web guiding element (eg turning bar or deflecting bar) by injection of water, steam or a liquid mixture into the gaseous fluid (eg air).
  • an air-circulated web guiding element eg turning bar or deflecting bar
  • water, steam or a liquid mixture into the gaseous fluid (eg air).
  • the application solution of an application device 09 or, in the case of two, in particular the second application device 11, is advantageously offset with surface tension reducing agents, in particular with surfactants.
  • the application solution of the second applicator 11 is offset at least with more surface tension reducing agent than that of the first one.
  • the web B1 produced in the heatset in comparison to a coldset web with the same development length (on the forme cylinder), tends towards a greater elongation downstream.
  • the heatset web B1 in order to be able to guide the heatset web B1 with sufficient web tension via the former 04, there must be an increased web tension in front of the former 04, ie between the dryer 02 and the former 03.
  • the heatset web B1- which has shrunk due to the drying-tends to increase Formation of longitudinal folds.
  • a positively driven roller 12, in particular a draw roller 12 is provided in the path of the first web B1 behind the dryer 02, but before the spreading device 08.
  • one or more driven cooling rollers 12 of a cooling device 13 can be used as a draw roller 12 application in a little complex design.
  • the cooling roll (s) is (are) z. B. formed on its cooperating with the web B1 length with a substantially constant diameter.
  • the tension roller 12 is driven by a drive motor which is controllable, at least with respect to its rotational speed, advantageously with respect to a rotational angle position.
  • the positively driven roller 12, in particular at least one cooling roller 12, and that of the spreading device 08 downstream and the former 4 pull roller 06; 07 are mechanically independent of each other by drive motors and a central and / or decentralized drive control driven such that a lead or lag and thus a web tension of the first web before the draw roller 06; 07, in particular in front of the funnel roller 07 and / or before the draw roller 06, d. H. also in the area of the spreading device 08, is adjustable.
  • the tension roller 06 is driven by a drive motor, which can be controlled at least as regards its rotational speed, advantageously with respect to a rotational angle position.
  • At least one of the first printing unit 01 upstream first intake 14 mechanically independent of the hopper roller 07 and possibly another of the hopper 07 upstream pull roller 06 and the tension or cooling roller 12 by a drive motor and a centralized or decentralized drive control such drivable that a lead or lag and thus a web tension of the first web B1 downstream of the intake 14 is adjustable.
  • FIG. 2 schematically shows the change of a web width b1 of the web B1 and an associated change of an image width when passing through the printing press in heatset mode.
  • the web B1 has an original web width b1 on the roll in the reel splicer 16, and exits from the printing unit 01 by being widened by the moisture upon printing. In the dryer 02, it is subject to a considerable shrinkage. By rewetting in one or more moistening or applicator devices 09; 11 and spreading it is slightly widened and freed from longitudinal wrinkles. When guided over the former 04, it may possibly again be subjected to a transverse extension.
  • the measures mentioned above are of very particular advantage in a printing machine, in particular a newspaper printing machine, with a plurality of printing units or printing towers for a plurality of webs in conjunction with the possibility of a so-called hybrid production.
  • H. here the possibility of a mixed production of coldset and Heatsetbahn (s), wherein at least one dryer 02 is provided for drying at least one of the webs.
  • i.d.R. the different simultaneously used and together leading to printing materials (paper types) and the drying processes different from each other, which is reflected both in different behavior with respect to growth or shrinkage of the web and thus the printed image and / or the web tension and elongation properties.
  • the printing press has at least one first printing unit 01 or at least one corresponding printing tower for printing a web B1 in the heatset and at least one or more second printing units 02 (or one or more corresponding printing towers) with at least one offset printing unit for the on or printing both sides of one or more second webs B2 on (in Fig. 1 only a printing tower with second printing units shown).
  • means for guiding the second web B2 are provided, via which the second web B2 without passing through a dryer or at least without passing through an activated dryer together with the first web B1 on the at least one former 04 can be guided or guided.
  • the second printing unit 21 is designed as a coldset printing unit 21 (or correspondingly o. G., As printing unit for the waterless offset printing, dry offset) or the second web B2 is processed at least in the coldset.
  • This second web B2 is as coldset web B2 z. B. with a different to the first line B1 coating weight, especially from uncoated or slightly coated paper with a maximum weight of 20 g / m 2 , in particular at most 10 g / m 2 , preferably newsprint. She can in particular a different grammage to the first web B1, in particular in a grammage range of less than 55 g / m 2 , z. B. in a grammage range of 35 - 55 g / m 2 , identify.
  • the Coldsetbahn B2 cooperating transfer cylinder 22 of the second printing unit 21 may have a compressible and / or elastic blanket, which differs in the elastic properties of those of a cooperating with the Heatsetbahn B2 transfer cylinder 16.
  • the blanket of the (heatset) transfer cylinder 22 can in this case z. B. less positive or more negative promoting than that of the (coldset) transfer cylinder 16 may be selected. Additionally or instead, an undisturbed extent, i. H. with blanket in non-indented state, the (heatset) transfer cylinder 22 may be different (eg, smaller) than that of the (coldset) transfer cylinder 16.
  • the different sizes can z. B. by different blanket thicknesses, or, at even printing blanket thickness, be produced by means of sub-trains.
  • a tension roller 24 of a longitudinal cutting device 31 may be provided upstream of the printing unit 21, Upstream of the printing unit 21, a tension roller 24 of a longitudinal cutting device 31 may be provided.
  • a multiple width eg: double or triple width, ie four or six newspaper pages to be printed or printed
  • web B2 is printed and, before it runs on the hopper assembly 03, in one or two-sided partial webs cut, and if necessary, a partial web over a turning end 32 with two turning bars laterally offset and / or to be overthrown.
  • the web path of the second web B2 is z. B. without spreader and / or without dryer and / or without cooling rollers.
  • the hopper roller 07 at least one positively driven roller, in particular tension roller 23; 24, provided.
  • at least the at least one draw roller 23; 24 of the second web B2 and the hopper roller 07 mechanically from one another and driven by the forcibly driven roller 12 of the first web B1 independently driven by drive motors and a central and / or decentralized drive control such that a pre- or Nacheinung and thus a web tension of the second web B2 , in particular independently of the first path B1, upstream of the funnel roller 07 is adjustable.
  • the overhead track should z. B. at the former have a higher web tension than the underlying. If z. B.
  • the web tension of the covering Heatsetbahn B1 should be higher than that of the underlying coldset (part) track B2 be.
  • a second infeed unit 26 arranged upstream of the second printing unit 21 should also be drivable independently of the hopper roller 07 by a drive motor and a central and / or decentralized drive control in such a way that a pre- or post-treatment and thus a web tension of the second web B2 downstream of the intake 26 is adjustable.
  • the lag of the forcibly driven roller 12 of the first web B1 provided upstream of the spreading device 08 can hereby be higher than that of the funnel roller 07 on the path of the second B2 web Draw roller 24.
  • the effect of the spreading device 08 on the first web B1 can preferably be variable via the spatial position of a curvature and / or a change in the thickness of a curvature and / or the prevailing web tension of the first web B1 in the region of the spreading device 08.
  • the web tension is here Preferably, by changing the Nach- or lead over between the spreading device upstream positive-driven roller 12 and the downstream following draw roller 06; 07 adjustable.
  • the quantity of application solution to be applied to the first web B1 can be changed via a corresponding actuator.
  • a measuring system 27 for assessing a web shrinkage in the transverse direction in particular on the detection of a web width and / or web position z. B. by means of web width sensor and / or the detection of a print image width or print image position z. B. by means of register scanning heads provided.
  • a lateral path offset can in the web before the printing unit 01 and / or after the dryer 02 a corresponding Veratz coupled 17, z. B. a rotating frame 17 may be provided.
  • the measuring system 27 may alternatively be designed instead of or in addition to be able to recognize longitudinal folds or wave formation in the web B1 in a modification.
  • this is for example as an optical system, in particular z. B. as a line or area camera, with appropriate evaluation software, which detects a different state to the target state and generates a corresponding output. This output can then be incorporated into the control or control with respect to web tension and / or dampening and / or spreading action.
  • a measuring system 28 may be provided for detecting the web tension.
  • a device 29, for. B. a control and / or regulating device 29 is provided, which signal by signal with one or more of the measuring systems, for. B. the measurement system 27 for assessing a web shrinkage or a wave / wrinkling and / or with the measuring system 28 for detecting the web tension, and preferably with one or more of the actuators, for. B.
  • the device 29 comprises in an advantageous embodiment at least means by which a measure of a shrinkage and / or wave or wrinkling can be determined from the received measured values and / or output. Basically, then by the operator -. B. on a control panel then designed as at least output device means 29 or a corresponding device on the printing machine control center - via a control command of one or more of the above-mentioned actuating means (moisture, spreading effect, web tension) a correction can be made. In an advantageous embodiment, however, by as a control and / or Regulating 29 trained device 29 itself an actuator for the web tension, z.
  • the control and / or regulating device 29 comprises electronic calculation or evaluation means, by which, depending on a detected shrinkage, a position of one or more of the actuators according to established rules, for. As an algorithm occurs.
  • the control and / or regulating device 29 can in this case also function as a component of an "automatic web tension control" (ie of a system for the automatic control of the web tension of the webs involved in the production) or at least with one such in terms of the web tension settings mentioned above.
  • the actuator influencing the web tension (for example drive of a roller 12, 06, 07 or the intake 14) is then indirectly influenced by the control and / or regulating device 29 by acting on a web tension control system.
  • in an alternative or further development means 29 is associated with an electronic memory in which (pre-) set values for the setting in terms of shrinking actuators, z. B. depending on the paper to be used characterizing data (eg., Paper type) and / or of the printed image data (eg, area coverage), and / or a web guide are deposited or deposited and if necessary for a planned Production can be called manually by the printer or by an algorithm of the control and / or regulating device 29.
  • characterizing data eg., Paper type
  • the printed image data eg., area coverage
  • FIGS. 3 to 6 alternative embodiments for the printing press along the path of the Heatsetbahn B1 are shown, these being taken alone or advantageously alternatively for in Fig. 1 shown heatset branch of the hybrid printing machine application can be found.
  • Fig. 3 is the second moistening or application device 11 in the web path between dryer 02 and cooling device 13 (possibly also integrated into the input region of the cooling device) arranged.
  • Fig. 4 there is a Humidifying or application device 11, z.
  • Fig. 5 As in the form of spray or steam nozzles, before entering the dryer 02, while they are in Fig. 5 in the area of the dryer 02 upstream hedgehog roller 19 and in Fig. 6 between printing unit 01 and hedgehog roller 19 is located.
  • Fig. 3 to 6 set forth training and / or arrangement of moistening or applicator devices 11 may individually or in addition to or in addition to the first and / or second moistening or application device 09; 11 may be arranged. However, it is particularly advantageous, at least one moistening or application device 09; 11 between dryer 02 and spreader 08 provide.
  • the Heatsetbahn B1 is first performed by the printing unit 01 and one or both sides, printed in one or more colors and then treated by the dryer 02, before downstream on a former 04 pull roller 06; 07 is fed to the former 04 of the funnel structure 03.
  • the heatset web is acted upon on its way between dryer 02 and former 04 by a web stretching device 08 with the web transverse to its longitudinal direction stretching force components.
  • the first web B1 is at least between dryer 02 and spreading device 08 by a moistening device 09; 11 rewetted targeted.
  • a shrinkage (in the transverse direction) and / or wave formation of the guided through the dryer 02 heatset web 01 on the web path between dryer 02 and former 04 is determined, and on the strength of the effect of the spreading device 08, z. B. via the web tension as an actuator (leading / lag of the draw rollers 06, 07, 12 or the intake and / or the position or curvature of the spreading device 08) and / or the amount of application means of the at least one humidifying device 09; 11 specifically influenced.
  • the minimum web tension to be maintained by the web B1 is thereby made possible by adjusting the spreading effect and / or moistening in such a way that shrinkage and / or wrinkling is limited to an admissible extent for this web tension.
  • This interaction makes it possible to set a sufficiently high web tension (for example in a hybrid operation with respect to the web tension of a coldset web B2) on the first web B1, in particular advantageously before merging it with a second web B2 (coldset web B2) can, without the Heatsetbahn B1 (first track B1) has an unacceptably high shrinkage or wrinkling or wave formation (or alternatively would be present too low web tension).
  • the behavior that is significantly different for coldset and heatset webs in terms of web tension and web transport thus becomes manageable.
  • the first web B1 printed or produced by the first printing unit 01 in the heatset is first jointly produced with a second web B2 printed or produced in a coldset in a second printing unit 21 or a longitudinal web second sub-web processed together via the same former 04 to form a strand.
  • An influence of the shrinkage takes place here z. B. by one or more o. G. Means (dampening and / or spreading effect and / or web tension) with a view to reducing a difference between the web widths or partial web widths of the first and second web B1; B2 or partial web and / or with regard to a track tension to be maintained of the first web B1 before the hopper inlet.
  • the means and procedures mentioned are particularly advantageous i. V. m. Printing machines with first and second printing units 01; 21 and printing towers, wherein the first and second printing units 01; 21 several times, z. B. double or triple width, are formed, and / or in at least one operating situation in printing units of the first and second printing units 01; 21 each at least four standing or lying printed pages, in particular newspaper pages, of a same format on first and second webs B1; B2 are printed, and / or partial webs of first and second webs B1; B2 processed into a common product, in particular guided over a same former 04, are.
  • this z. B. several second webs B2 (as coldset webs B2) and at least a first web B1 (as heatset web B1) processed into a common product.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)

Claims (20)

  1. Machine à imprimer avec au moins une première tour d'impression avec au moins une première unité d'impression (01) comportant plusieurs groupes d'impression offset pour l'impression sur une ou deux faces d'une première bande (B1) traversant l'unité d'impression (01) sensiblement de bas en haut et à imprimer en polychromie dans la première tour d'impression, avec un séchoir (02) disposé en aval de la première unité d'impression sur le chemin de la première bande (B1) ainsi qu'une superstructure de cônes (03) comprenant au moins un cône plieur (04) que traverse la première bande et au moins un rouleau tendeur (06 ; 07) situé en aval du séchoir (02) et en amont du cône plieur (04), caractérisée en ce qu'un dispositif d'étirage en largeur (08) est prévu sur le chemin de la première bande (B1) entre le séchoir (02) et le ou les rouleaux tendeurs (06 ; 07) situés en amont du cône plieur, et en ce que sur le chemin de la première bande (B1), en aval du séchoir (02) mais en amont du dispositif d'étirage en largeur (08), il est prévu un rouleau (12) à entraînement forcé par un moteur d'entraînement dont au moins la vitesse de rotation ou une position angulaire sont réglables.
  2. Machine à imprimer selon la revendication 1, caractérisée par au moins une deuxième tour d'impression avec au moins une deuxième unité d'impression (21) comportant plusieurs groupes d'impression offset pour l'impression sur une ou deux faces d'une deuxième bande (B2) traversant l'unité d'impression (21) sensiblement du bas vers le haut et à imprimer en polychromie dans la deuxième tour d'impression, des moyens étant prévus pour le guidage de la deuxième bande (B2), avec lesquels la deuxième bande (B2) est guidée avec la première bande (B1) vers le ou les cônes plieurs (04) sans traverser un séchoir ou au moins sans traverser un séchoir activé.
  3. Machine à imprimer selon la revendication 1 ou 2, caractérisée en ce qu'un dispositif humidificateur ou applicateur (09 ; 11) appliquant de l'humidité sur la première bande (B1), en particulier un dispositif fonctionnant avec de la vapeur d'eau ou une solution à appliquer, est prévu sur le chemin de bande entre le séchoir (02) et le dispositif d'étirage en largeur (08).
  4. Machine à imprimer selon l'une ou plusieurs des revendications 1 à 3, caractérisée en ce que comme le rouleau (12) à entraînement forcé un rouleau tendeur (12) ou un ou plusieurs rouleaux de refroidissement (12) d'un dispositif de refroidissement (13) sont prévus sur le chemin de la première bande (B1) entre le séchoir (02) et le dispositif d'étirage en largeur (08).
  5. Machine à imprimer selon la revendication 4, caractérisée en ce qu'au moins le rouleau (12) à entraînement forcé, en particulier au moins un rouleau de refroidissement (12), ainsi que le ou les rouleaux tendeurs (06 ; 07) en aval du dispositif d'étirage en largeur (08) et en amont du cône plieur (04), sont entraînables mécaniquement indépendamment entre eux par des moteurs d'entraînement, lesquels sont en liaison de signal avec une commande d'entraînement centrale et/ou décentralisée, et peuvent être entraînés par celle-ci de manière à pouvoir régler une avance ou un retard relatifs et par conséquent une tension de la première bande (B1) dans la section entre le rouleau tendeur (12 ; 06 ; 07) en amont et en aval du dispositif d'étirage en largeur, en particulier du rouleau de refroidissement (12) entraîné, et le rouleau tendeur (06) suivant immédiatement le rouleau d'étirage en largeur.
  6. Machine à imprimer selon la revendication 2, caractérisée en ce qu'un groupe, ou les groupes d'impression offset de la première unité d'impression (01) comportent un cylindre de transfert (16) présentant un premier blanchet compressible et/ou élastique et une première périphérie extérieure non affectée, autrement dit une périphérie avec le blanchet en état non serré, et en ce qu'un groupe, ou les groupes d'impression offset de la deuxième unité d'impression (21) comportent un deuxième cylindre de transfert (22) présentant un premier blanchet compressible et/ou élastique et une deuxième périphérie extérieure non affectée, autrement dit une périphérie avec le blanchet en état non serré, le premier cylindre de transfert (16) et le deuxième cylindre de transfert (22) se distinguant par leur périphérie non affectée et/ou par les propriétés élastiques de leur blanchet.
  7. Machine à imprimer selon l'une ou plusieurs des revendications précédentes, caractérisée en ce que le dispositif d'étirage en largeur (08) est réalisé comme rouleau d'étirage en largeur (08), en particulier comme rouleau d'étirage en largeur (08) avec effet variable d'étirage en largeur.
  8. Machine à imprimer selon la revendication 2, caractérisée en ce que la deuxième unité d'impression (21) est réalisée ou au moins mise en service comme unité d'impression coldset (21) et est préférentiellement mise en service avec des encres coldset.
  9. Machine à imprimer selon l'une ou plusieurs des revendications précédentes, caractérisée en ce que sur le chemin de la deuxième bande (B2) en aval de la deuxième unité d'impression (21), mais en amont du rouleau de cône (07), il est prévu au moins un rouleau à entraînement forcé, en particulier un rouleau tendeur (23 ; 24), et en ce que le ou les rouleaux tendeurs (23 ; 24) de la deuxième bande (B2) ainsi que le rouleau de cône (07) sont entraînables mécaniquement indépendamment entre eux et du rouleau (12) à entraînement forcé de la première bande (B1) par des moteurs d'entraînement et une commande d'entraînement centrale et/ou décentralisée, de manière à pouvoir régler en amont du rouleau de cône (07) une avance ou un retard et par conséquent une tension de la deuxième bande (B2), en particulier indépendamment de la première bande (B1).
  10. Machine à imprimer selon la revendication 9, caractérisée en ce que par rapport au rouleau de cône (07), le retard du rouleau (12) à entraînement forcé de la première bande (B1), prévu en amont du dispositif d'étirage en largeur (08), est choisi supérieur au retard du dernier rouleau tendeur (24) en amont du rouleau de cône (07) sur le chemin de la deuxième (B2) bande.
  11. Machine à imprimer selon l'une ou plusieurs des revendications précédentes, caractérisée en ce que l'action du dispositif d'étirage en largeur (08) est prévue de manière variable sur la position spatiale d'une courbure et/ou sur une modification de l'amplitude d'une courbure et/ou sur la tension dominante de la première bande (B1) au niveau du dispositif d'étirage en largeur (08).
  12. Machine à imprimer selon la revendication 4 ou 11, caractérisée en ce que la tension de bande peut être réglée par modification de l'avance ou du retard entre le rouleau (12) à entraînement forcé en amont du dispositif d'étirage en largeur et le rouleau tendeur (06 ; 07) immédiatement en aval.
  13. Machine à imprimer selon l'une ou plusieurs des revendications précédentes, caractérisée en ce que le débit de la solution à appliquer sur la première bande (B1) est prévu de manière à être variable.
  14. Machine à imprimer selon l'une ou plusieurs des revendications précédentes, caractérisée en ce qu'un dispositif (29), en particulier un dispositif de commande et/ou de réglage (29) est prévu, lequel est en liaison technique de signal avec un système de mesure (27) prévu en amont du rouleau de cône (07) sur le chemin de la première bande (B1) pour l'évaluation d'une contraction de bande ou d'une formation d'ondulations et/ou avec un système de mesure (28) prévu en amont du rouleau de cône (07) sur le chemin de la première bande (B1) pour la détection de la tension de bande et/ou avec un élément de réglage pour le débit de la solution à appliquer sur la première bande (B1) et/ou un élément de réglage influençant la tension de bande comme en particulier une commande d'entraînement centrale ou décentralisée d'au moins un des rouleaux (06 ; 07 ; 12 ; 14) coopérant avec la première bande (B1), et/ou un élément de réglage influençant l'action du dispositif d'étirage en largeur (08).
  15. Machine à imprimer selon la revendication 14, caractérisée en ce qu'en tant que moyen de commande et/ou de réglage (29), le dispositif (29) comprend des moyens par lesquels un élément de réglage pour la tension de bande, tel qu'un variateur ou une commande d'entraînement, et/ou un élément de réglage pour le débit du fluide à appliquer et/ou un élément de réglage pour modifier l'action d'étirement en largeur, peuvent être rendus directement ou indirectement réactifs.
  16. Procédé d'utilisation d'une machine à imprimer selon la revendication 3, caractérisé en ce qu'aux fins d'humidification, un premier dispositif humidificateur ou applicateur (09), en particulier un premier groupe silicone (09), est disposé entre le séchoir et le dispositif d'étirage en largeur, et en ce qu'est espacé de celui-ci sur le chemin de bande un deuxième dispositif humidificateur ou applicateur, en particulier un dispositif de réhumidification, préférentiellement à la manière d'un deuxième groupe silicone (11), le deuxième dispositif humidificateur ou applicateur (11) étant mis en service avec une solution à teneur en eau supérieure à celle du premier dispositif humidificateur ou applicateur (09).
  17. Procédé d'utilisation d'une machine à imprimer selon l'une ou plusieurs des revendications 1 à 5 ou procédé selon la revendication 16, caractérisé par une première bande (B1) réalisée comme bande heatset (B1) en papier satiné et/ou couché plus épais, avec un poids de couchage notamment supérieur à 10 g/m2 et/ou dans une plage de grammage supérieure à 40 g/m2, p. ex. dans une plage de grammage comprise entre 55 et 90 g/m2.
  18. Procédé d'utilisation d'une machine à imprimer selon l'une ou plusieurs des revendications 1 à 8 ou procédé selon la revendication 16 ou 17, caractérisé par une deuxième bande (B2) réalisée comme bande coldset (B2) avec un poids de couchage différent de celui de la première bande (B1), en particulier en papier non couché ou légèrement couché avec un poids de couchage maximal de 10 g/m2, préférentiellement en papier non couché.
  19. Procédé de traitement d'une première bande (B1) guidée dans une machine à imprimer, laquelle est imprimée en polychromie par plusieurs groupes d'impression offset d'au moins une première unité d'impression (01) d'une première tour d'impression, et traverse la première tour d'impression sensiblement de bas en haut, avant d'être traitée dans un séchoir (02) et conduite en aval vers le cône plieur (04) d'une superstructure de cônes (03) par l'intermédiaire d'un rouleau tendeur (06 ; 07) situé en aval séchoir (02) et en amont du cône plieur (04), et d'une deuxième bande (B2), laquelle est imprimée en polychromie par plusieurs groupes d'impression offset d'au moins une deuxième unité d'impression (21) d'une deuxième tour d'impression, la deuxième bande (B2) traversant la première tour d'impression sensiblement de bas en haut avant d'être conduite dans un séchoir activé vers le cône plieur (04) sans traitement complémentaire, la première bande (B1) imprimée en heatset par la première unité d'impression ou une première bande partielle produite par découpe longitudinale de celle-ci étant traitée par le même cône plieur (04) avec la deuxième bande (B2) imprimée en coldset dans la deuxième unité d'impression (21) ou une deuxième bande partielle produite par découpe longitudinale de celle-ci pour former un brin, caractérisé en ce que la première bande (B1) est guidée par un rouleau (12) à entraînement forcé sur son chemin entre le séchoir (02) et le cône plieur (04) et en aval par un dispositif d'étirage en largeur (08) avec des composantes de force étirant la bande transversalement à sa direction longitudinale, avant d'être guidée par le rouleau tendeur (06 ; 07) en amont du cône plieur (04).
  20. Procédé selon la revendication 19, caractérisé en ce que la première bande (B1) est ré-humidifiée de manière ciblée par un dispositif humidificateur (09 ; 11) entre le séchoir (02) et le dispositif d'étirage en largeur (08).
EP09736216.4A 2008-11-14 2009-10-15 Presse a bobines a trajet vertical d'un marche d'une bande, sechage et mise en tension en sens travers Active EP2352643B1 (fr)

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DE102008043767A DE102008043767A1 (de) 2008-11-14 2008-11-14 Druckmaschine und Verfahren zur Handhabung einer durch die Druckmaschine geführten Bahn
PCT/EP2009/063455 WO2010054910A2 (fr) 2008-11-14 2009-10-15 Machine d'impression et procédé pour manipuler une bande guidée par la machine d'impression

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US20110239879A1 (en) 2011-10-06
CN102216081B (zh) 2013-11-13
US8256345B2 (en) 2012-09-04
CN102216081A (zh) 2011-10-12
DE102008043767A1 (de) 2010-06-02
WO2010054910A2 (fr) 2010-05-20
WO2010054910A3 (fr) 2010-07-22
EP2352643A2 (fr) 2011-08-10

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