EP2296891B1 - Dispositif de gaufrage de feuilles à froid - Google Patents

Dispositif de gaufrage de feuilles à froid Download PDF

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Publication number
EP2296891B1
EP2296891B1 EP09761592.6A EP09761592A EP2296891B1 EP 2296891 B1 EP2296891 B1 EP 2296891B1 EP 09761592 A EP09761592 A EP 09761592A EP 2296891 B1 EP2296891 B1 EP 2296891B1
Authority
EP
European Patent Office
Prior art keywords
film
transfer
press
web
slot
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
EP09761592.6A
Other languages
German (de)
English (en)
Other versions
EP2296891A1 (fr
Inventor
Uwe Püschel
Guido Reschke
Jürgen Schölzig
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 Sheetfed GmbH
Original Assignee
Manroland Sheetfed 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 Sheetfed GmbH filed Critical Manroland Sheetfed GmbH
Publication of EP2296891A1 publication Critical patent/EP2296891A1/fr
Application granted granted Critical
Publication of EP2296891B1 publication Critical patent/EP2296891B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/062—Presses of the rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/24—Inking and printing with a printer's forme combined with embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/006—Patterns of chemical products used for a specific purpose, e.g. pesticides, perfumes, adhesive patterns; use of microencapsulated material; Printing on smoking articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/21—Supports for the unwinding roll; Braking devices for the unwinding roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/22—Guiding or tensioning the printing foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/50—Printing presses using a heated printing foil combined with existing presses
    • B41P2219/51—Converting existing presses to foil printing presses

Definitions

  • the invention relates to a device and a method for transferring imaging layers from a carrier foil to printed sheets according to the preambles of claims 1 and 6.
  • a printing material and a printing apparatus using this material are described.
  • a sheet-processing machine which has a feeder and a boom, wherein printing units and a coating module are arranged between the two units.
  • an adhesive pattern is applied by means of the planographic printing process. This adhesive pattern is applied in a cold printing process and has a specific imaging subject.
  • a film guide is provided in the printing unit following the coating module with a counter-pressure cylinder and a press roller.
  • the transfer film has a carrier layer on which imaging layers such as metallic layers, for example of aluminum, can be applied. Between the metallic layer and the carrier film, a separating layer is provided, which ensures that the metallic layer can be removed from the carrier layer.
  • each sheet is given an adhesive pattern. Thereafter, the sheet is passed through the coating module, being brought by means of the press roller on the impression cylinder resting sheet with the film material in combination. At the same time, the metal layer lying down is narrow Connect to the adhesive areas on the sheet. After further transporting the printing sheet, the metallic layer adheres only in the area provided with the adhesive pattern. The carrier film is thus removed from the metallic layer in the region of the adhesive pattern. The used in this way transfer film is wound up again. The print sheet is laid out in the coated state. It is known to use such coating modules, for example in printing units of printing presses. A disadvantage of the known devices is that they can not be used flexibly.
  • WO 2005/100025 A 1 describes a pad for an embossing device.
  • a device for the cold foil transfer is used in a sheet-processing printing press, which uses the blanket cylinder of a printing unit used as a coating module as a press roller for the guidance of a transfer film web.
  • the film transfer device can also be operated with a timed supply of the transfer film web to a transfer nip in the coating module. For example, drives of film rolls or dancer rolls are described as clock devices.
  • EP 0 987 205 A1 are described a loop buffer for a material web and its use.
  • a stamping foil web is guided from a film roll to a hot foil stamping station and wound up after the stamping process on a further film roll.
  • the film web is guided through a loop memory, which is acted upon by negative pressure. This can form in the loop memory a variable web loop of the film web.
  • the transport of the film web is carried out by means of the film web entangled transport rollers and the film web holding suction devices, which are each provided with their own drive motors.
  • Out EP 0 858 888 A2 is a flat-stamping machine with flat press, embossing table, tooling plate and a film web known.
  • Film loop stores form a film loop with a suction device on the film web exerted air pressure difference.
  • the film web is stopped in the printing phase on the embossing table according to the press cycle by controlling the film feed and pulled in the unpressurized phase in the next embossing position.
  • Speed differences between the embossing feed rate and the web speed at the unwind roll or take-off device are compensated by increasing and decreasing the loops in the film stores.
  • the object of the invention is therefore to provide a device by means of which the transfer of an imaging layer, e.g. a metallization layer can be done on a sheet safely, economically and accurately, the device should be manageable for an extended range of applications.
  • a partial film application is to be made possible.
  • the device provides a clock system for guiding the film web.
  • the device is characterized in that a press roller has a pressing surface which occupies a partial area of the total area of a printed sheet.
  • press surfaces are designed as tensionable segments or as cut-out rubber blankets or as passably produced, preferably photopolymer high-pressure plates or as detachable, for example under magnetic action, attachable pressing segments.
  • a substructure of the corresponding partial press fabric is provided to use a pad with or without damping effect such as a vacuum blanket.
  • a clamping spindle as in a blanket cylinder known or so-called combination clamping rails for blankets or printing plates, as known from the blanket cylinders or the form of cylinders.
  • the surface of the press cylinder elevator is also suitable for profiled embossing.
  • the makeready shortening is achieved by prepared press cylinder lifts.
  • register automation can be introduced.
  • add the press cylinder to a register system e.g. is executed via register pins.
  • the press cylinder should be adjustable e.g. in the manner of a register system for automatic printing plate tension.
  • the side and circumferential register can be adjustable as in a forme cylinder.
  • the press cylinder elevator may be provided with register punches.
  • the device can also be advantageously used in order to improve the use of the film by dividing the transfer film into one or more partial film webs of lesser width.
  • the aforementioned methods can be used side by side so also different types of films.
  • a control of the transfer film can be carried out such that, when passing through a cylinder channel receiving the grippers of the sheet-guiding impression cylinder, the film feed is stopped, wherein the press roll then passes in a sliding manner under the transfer film.
  • the image-forming layer can be applied by means of so-called UV negative-pressure ink.
  • the UV negative pressure ink is applied by means of the printing unit for the adhesive in a corresponding manner via an offset printing plate.
  • the application of different imaging coatings or metallization layers within a subject can take place one after the other.
  • the applicator 1 may be a per se known offset printing unit with an inking unit 11, a plate cylinder 12 and a blanket cylinder 13.
  • the blanket cylinder 13 cooperates with a counter-pressure cylinder 4.
  • the coating unit 2 can also be formed by an offset printing unit.
  • the transfer nip 6 in the coating unit 2 is formed by a press roll 3 and an impression cylinder 4.
  • the press roller 3 may correspond to the blanket cylinder.
  • the press roll 3 may also correspond to the forme cylinder of a paint module.
  • a web guide 14 for transfer films is shown within the coating unit 2 used for the film transfer.
  • the transfer film 5 is thereby switched on and executed by protective devices 15 of the coating unit 2.
  • the film supply roll 8 is assigned to the coating unit 2 on the sheet feed side.
  • the film supply roll 8 has a rotary drive 7 for the continuous controlled feeding of the transfer film to the coating unit 2.
  • a film collecting roller 9 is provided for the used sheet material.
  • a rotary drive 7 on the film collecting roller 9 is always advantageous. It can even be provided that the transfer film 5 is conveyed on the outlet side by means of the rotary drive 7 and held taut on the inlet side by means of a brake.
  • the press roll 3 (as a blanket cylinder or forme cylinder or separate press roll) carries on its surface a compressible or damping, e.g. also provided with a compressible intermediate layer element.
  • the press roll 3 can be provided with a press fabric 10, for example as a plastic cover, comparable to a blanket or blanket, which is held in a cylinder channel on clamping devices.
  • the film feed of the transfer film 5 from the film supply roll 8 to the transfer nip 6 and the film collection roller 9 is gradually controlled, the transfer film 5 is then stopped, if no transfer of imaging or covering layers should take place.
  • the associated device preferably includes a corresponding feed control for the transfer sheet 5, which ensures that at least the lying in the region of the press roller 3 and the impression cylinder 4 part of the film web is stationary as long as the cylinder channel passes. This will be later in FIGS. 2 to 5 Details explained.
  • a further improvement of the film utilization of the type described results when the transfer film 5 is divided into one or more Operafolienbahnen lesser width.
  • the utilization of the transfer film 5 can be improved even in zonally different lengths coating areas within an arc.
  • dryer 16 can be provided in the film application module thus formed from the applicator 1 and the coating unit 2, by means of which the adhesive application or the entire film coating can be dried.
  • UV dryers come into question.
  • the film application module may include a monitoring device 17 for scanning the sheet surface.
  • the monitoring device 17 enables the evaluation of image contents of the coating and the detection of defects in the film coating.
  • Such a monitoring device can also be provided in conjunction with the printing press, in which the film application module is integrated. Then it can be arranged for example in the sheet delivery of the printing press or a last printing unit.
  • the transport of the transfer film 5 can be monitored on or between film guide rollers 14 by checking the web tension of the film web 5.
  • a stabilization device 30 can be arranged to stabilize the film web 5 between a first deflection roller and a first inlet roller to the transfer unit in order to reduce flapping movements of the film web 5.
  • the stabilizing device 30 has z. B. two rotatably mounted rollers, which is provided for the variable setting of the wrap angle of the film web 5 on the guide rollers, so that the guiding action and the damping effect on the film web 5 is adjustable depending on the operating state.
  • the adjustment of the stabilization device 30 can be carried out in conjunction with means for web tension control 19 and possibly a sensor device 20 for web break monitoring.
  • the additionally obtained information about the web tension as the actual value can be used for the control of the printing or transfer process.
  • the system can be coupled to a control station of the printing machine, via which the setpoint values for maximum and minimum web tension can be entered. This may depend on the type of transfer film 5 used and on the printing or transfer conditions in the coating module 2 in connection with the properties of the printing material, the adhesive or the press fabric.
  • the necessary data can be read via interfaces directly from data carriers to film supply rolls and changed by means of parameter values from the setting of the transfer process on the coating module 2.
  • the method relating to the film transfer is described in the described printing or application machine according to FIG. 1 as follows: It is intended, at least in a printing unit 50 following the coating unit 2, to apply a color print to the printed image sheet coated with a metallized layer.
  • the sheet from the coating unit 2 is transferred from the impression cylinder 4 via a sheet transfer drum or a sheet transfer unit to a counter-pressure cylinder 40 of the printing unit 50.
  • the printing unit 50 has, as usual in offset printing units, the counter-pressure cylinder 40, an associated rubber or blanket cylinder 41 and a plate cylinder 43 associated therewith.
  • the plate cylinder 43 are here shown schematically an inking unit and a dampening unit assigned.
  • a further pressure gap 60 is formed.
  • ink is applied from a spanned on the plate cylinder 43 printing plate 44 via a arranged on the blanket cylinder 41 cover 42 on the sheet.
  • the gap of the printing gap 60 between the surfaces of the blanket cylinder 41 and the impression cylinder 40 is adjustable by means of the printing blanket cylinder 41 associated adjusting devices 45.
  • the setting referred to relates to the thickness of the printing material to be processed, which is to be printed in the printing nip 60.
  • a printing pressure is necessary to transfer the ink from the blanket cylinder 41 to the held on the impression cylinder 40 substrate.
  • the adjustments with respect to the transfer nip 6 are made by means of further actuators 46 associated with the press roll 3.
  • the actuators 45, 46 are commonly used in offset printing on printing blanket or blanket cylinders of printing units or on cylinders of varnish modules.
  • a contoured or segmented pressing surface in the press fabric 10 in the press fabric 10.
  • the segmented pressing surface may be formed as an isolated surface element, as an annular, narrow surface element encircling the press roll 3, as a surface line following a limited peripheral portion covering over the width of the press roll 3 reaching surface element or in the form of several such surface elements pronounced and so the press fabric 10 form.
  • a cut-out printing blanket, an imageable plastic high-pressure mold or a pressure pad to be fastened on a smooth base, possibly adhesively attachable or magnetically attachable, can be used to support the segmented pressing surface.
  • One at its bottom with a magnetic adhesive surface provided Anyaksegment can be placed for example directly on the surface of the press roller 3.
  • a magnetic film can be clamped onto the surface of the press roll 3, to which then a contact pressure segment with a magnetically adhering rear side can be placed for affixing or positioning the segmented press surface 10.
  • the surface and the inner structure of the Andrucksegmentes should correspond to the information described above in terms of elasticity and smoothness.
  • a compressible pad may be provided which carries a preferably smooth relatively firm functional position.
  • this limited segmented pressing surface in the press fabric 10 is that - similar to the passage of a cylinder channel of the press roll 3 and the opposite impression cylinder 4 - the entrapment of the transfer film 5 is given only if the segmented press surface the transfer film 5 touching the transfer nip. 6 passes.
  • the pressing surface should only be able to act on the transfer film 5 in the areas where actually imaging layers are to be transferred from the transfer film 5 to the printing sheet.
  • a pad with or without damping effect such as a vacuum blanket (but only in press clothing without rigid support layer) used.
  • Clamping systems in the cylinder channel of the press roll 3 for attaching the press fabric 10 may be tensioning spindles such as in a blanket cylinder or combination clamping rails for blankets or printing plates, as known from the rubber or the form cylinder.
  • the surface of the press fabric 10 is suitable depending on the structure for profiled imprints. This results in an extended range of applications for the process of cold foil stamping. Using the above elements, a very simple and fast handling of the device of the film application module is possible.
  • FIG. 2 is a film transfer module accordingly FIG. 1 shown.
  • the dancer rollers 18 are arranged to regulate the web tension.
  • the drive groups 22 are described here for all subsequent embodiments and each show a pair of rollers that can pinch the film web 5 and thus defined in terms of a desired transport path can lead.
  • the pairs of rollers of the drive groups 22 are made in FIG. 2 each of a film guide roller 24 and a drive roller 23. Both the film guide roller 24 and the drive roller 23 is at least partially driven.
  • the drive of the drive roller 23 can not only in the transport direction of the film web 5 (of film roll 8 to 9), but may also generate return strokes. This makes sense, since the film web 5 does not stop immediately when decelerating and thus runs over a desired breakpoint. As a result, a piece of the film web 5 could not be used.
  • a short defined return stroke after braking and stopping the film web 5 in the transfer area reduces or eliminates this unnecessary film consumption.
  • the drive of the drive roller 23 can be controlled quickly.
  • the drive roller 23 itself can be segmented in order to be able to execute the changing drive movements quickly.
  • the film guide roller 24 with respect to the drive roller 23 can be pivoted up and down, but it can also be permanently employed on the drive roller 23.
  • the film guide roller 24 perform a more or less controlled by the film web 5 movement, while the drive roller 23 performs a conveying movement and the return stroke movement.
  • the film guide roller 24 performs for a defined period in relation to the film transport direction a backward movement only by controlled hiring against the resting on the drive roller 23 film web 5.
  • the drive roller 23 then performs a continuous transport movement against the direction of the film web 5. This is possible because the film web 5 is freely movable at this time due to lack of contact pressure by the press roller 3 against the impression cylinder 4 in the transfer area.
  • the drive groups 22 can also hold the film web 5 in the transfer area under the necessary tension by braking at the time of sheet breakage, in this case at least on the feed side to the transfer nip 6, thus immediately upon restart of the film transfer with pressing by the press roller 3 against the impression cylinder 4 good transfer quality is achieved again.
  • the system of the drive group 22 is also suitable for segmented film guide rollers 24 in format width drive rollers 23 both for the guidance of a full-width film web 5 as well as for the guidance of, if necessary distributed distributed, partial film webs 5 suitable.
  • the segments of the film guide roller 24 can be arranged correspondingly adjustable to the positions of the partial film webs 5 in the axial direction to the press roller 3.
  • the drive group 22 can be simplified by designing the drive roller 23 with a rough or adhesive surface or as a suction roller. With a correspondingly large looping through the film web 5, sufficient adhesion for the secure guidance of the film web 5 on the drive roller 23 can then be achieved. Then it would be possible to dispense with a foil guide roller 24, even in segmented form. This is also harmless in terms of the format-width design of the drive roller 23.
  • a drive roller 23 designed as a suction roller could then be designed in such a way that suction devices which can be switched as needed in segments corresponding to the respective film web widths to be processed are provided if required.
  • FIG. 2 thus, it is provided to carry out the film timing in the transfer area by means of the drive groups 22 with respect to the film storage by means of the dancers 18.1, 18.2.
  • the dancer 18.1 in the region of the feed roller 8 takes on in the transfer area stationary film web 5 under the action of the web tension sensor located there, the film piece, which is released by the clamping of the film web 5 by means of the drive group 22.
  • the dancer 18.2 releases a piece of film for the film winding, since then no film web 5 is conveyed after.
  • the sequence of film release and film storage runs on the dancers 18.2, 18.1 in each case vice versa.
  • FIG. 3 a simplified embodiment in a coating unit 2 is shown.
  • the dancers 18 are shown, which are to serve only the web tension control.
  • a drive group 22 is again provided in the region of the film feed to the transfer area with the transfer nip 6.
  • a pendulum-held foil guide roller 25 is shown on the outlet side from the transfer area. This film guide roller 25 can perform a directed transversely to the course of the transport direction of the film web 5 compensating movement. The compensation movement is marked with a dashed representation.
  • the path of the film web 5 is extended and shortened.
  • the film guide roller 25 can perform a compensating movement to shorten the web path and thus release a piece of film web to compensate for this movement against the Ab detail Gay. If the promotion of the film web to start again, the film guide roller 25 performs a movement to extend the path of the film web 5 down. Thus, the film web 5 is accelerated again or released in the acceleration by releasing the drive group 22 track piece can be compensated.
  • FIGS. 4 and 5 variants of the storage effects in the film timing are shown, which use a per se known principle of looping the film web by applying a negative pressure film memory 26.1, 26.2, 27.1, 27.2,28.1 and 28.2 are each assigned to one side of the coating unit 2.
  • the film stores 26.1, 27.1 and 28.1 are respectively associated with the feed side of the film web 5 to the transfer nip 6 and thus the feed roller 8.
  • the film stores 26.2, 27.2 and 28.2 are each associated with the discharge side of the film web 5 away from the transfer nip 6.
  • Each film store 26.1, 26.2, 27.1, 27.2, 28.1 and 28.2 consists of a vacuum chamber into which a film loop 29 of the film web 5 is guided in and out again.
  • the effect of the film reservoirs 26.1, 26.2, 27.1, 27.2, 28.1 and 28.2 is as follows: By sucking air (for example by means of one or more fans) on the bottom side of the vacuum chambers, the film loop 29 is in each case provided with a force that adjusts itself according to the negative pressure Injected negative pressure chamber. This force does not outweigh the predetermined by the web tension control tensile force of the film web 5, since the film loops 29 would otherwise be firmly sucked in the vacuum chambers.
  • the system is self-regulating insofar as the film loops 29 can freely oscillate in the chamber against the force of the negative pressure and thus receive or release each foil web pieces. Since the system of the film memory 26.1, 26.2, 27.1, 27.2, 28.1 and 28.2 is freely oscillating, more drive groups have to be provided here than in the previously described systems.
  • the formation of the size of the film loops 29 (36, see Fig. 6 ) be used.
  • a sensor may be provided in each of the vacuum chambers, which is formed approximately on the basis of the distance measurement by means of ultrasound. This sensor detects how far the film loop 29, 36 is formed or how far the film loop 29, 36 is drawn into the vacuum chamber. On the basis of these constantly measured signals can then be regulated by means of the drives of the film rolls 7, 8 and possibly in conjunction with dancer rolls the film web conveying.
  • FIG. 4 Two variants for the arrangement of foil stores 26.1, 26.2, 27.1 and 27.2 are shown. At the bottom of the film transfer module of the coating unit 2 small film storage 26.1 and 26.2 are shown. These are with the drive groups 22nd the transfer area at the transfer nip 6 combined. In addition, the film stores 26.1, 26.2 each foil guide rollers 14 are assigned to guide the film web 5. At the top of the film transfer module of the coating unit 2 larger film storage 27.1 and 27.2 are shown. These are combined with their own drive groups and possibly with drive groups 22 of the transfer area at the transfer gap 6. In addition, the film stores 27.1, 27.2 are each associated with film guide rollers 14 for guiding the film web 5.
  • the foil stores 27.1, 27.2 associated drive groups 22 are used to hold the film web 5 when the negative pressure at the film stores 27.1, 27.2 collapses or other disturbances occur in the film promotion.
  • these drive groups 22 a further control option for the railway conveying.
  • the system of film stores 26.1, 26.2 is built smaller, so better integrated and responsive because of its small volume. With this system, so smaller fluctuations in the film web promotion can be compensated quickly and effectively and also serves the same timing.
  • the system of film stores 27.1, 27.2 is built larger, thus receptive and can compensate for larger fluctuations in the film web promotion. This is suitable for a timing that has to bridge large spaces when film transfer, so if only short areas of film 5 are to be transferred to the circumference of the press roll.
  • FIG. 5 is a variant with foil stores 28.1 and 28.2 shown in a coating unit 2, which allows even larger storage.
  • the film stores 28.1, 28.2 are placed vertically and assigned directly to the drive groups 22 of the transfer area at the transfer nip 6.
  • the feed of the film web 5 from the film loop 29 in the film store 28.1 can be fed to the transfer area directly and without a film guide device of the first drive group 22 on the feed side.
  • FIG. 5 are two Folienleitwalzen 14 for discharge from the housing of the coating plant 2 shown.
  • roller pairs 14 which serve as pinch rollers for better guidance of the film web 5.
  • the one film roll can in turn be designed as a drive roller 24 in order to be able to control the film web conveyance here as well.
  • FIG. 6 a further variant with foil stores 32.1 and 32.2 is shown in a coating unit 2 which has a compact construction and allows larger stores.
  • the film storage 32.1 is arranged approximately horizontally downstream under the film roll 7 and the film storage 32.2 is placed approximately perpendicular to the opposite side.
  • the drive group 33 with two film guide rollers 35 and a drive roller 34 on the inlet side of the transfer area is assigned close to the transfer nip 6.
  • the drive group 33 with a film guide roller 35 and a drive roller 34 on the discharge side of the transfer nip 6 is associated with the film storage 32.2.
  • the feeding of the film web 5 from the film loop 36 in the film memory 32.1 can be arranged compactly and fed via a smoothing and stabilizing device 30 of the first drive group 33 on the feed side to the transfer area (transfer nip 6).
  • Folienleitwalzen 31 are provided to keep the film web 5 easily movable.
  • the film web 5 on the discharge side of the transfer area after the transfer nip 6 on the film web 5 smooth holding foil guiding elements 14 (in the manner of a smoothing and stabilizing device) are performed. These film guiding elements 14 also guide the film web 5 out of the area of the printing unit protection 15 on the coating unit 2.
  • a drive group 37 On the discharge side after the transfer region to the film storage 32.2 can also be arranged a drive group 37, which has a film guide roller 38 and a drive roller 39. To form a film loop 36 in the film storage 32.2, the film web 5 is fed without additional guide. The removal of the film web 5 from the film storage 32.2 via a film guide roller 31st
  • a film guide roller 31 which serve to better guide the film web 5, so that the film web the film storage 32.1 exactly fed and kept smooth from the film storage 32.2 for winding is dissipated.
  • the drive group 37 for the discharge side of the film web 5 may be arranged on the film guide roller 31 on the film storage 32.2. For this purpose, because of the large wrap the film guide roller 31 itself be driven or it can also be assigned to this a further drive roller.
  • the drive groups 22, as well as the film guide roller 25 FIG. 3 can also be combined with suction rollers. Then the clamping of the film web is not so critical. The control of the suction air to such suction rolls but is run at a very high clock frequency.
  • the vacuum chambers of the film stores 26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1 and 32.2 can be designed according to the leading to film or partial film webs. If the vacuum chambers have the width of a film web and are displaceable, it is possible to respond flexibly to desired coating conditions. Furthermore, separating devices which cover the lateral position of the film web 5 or partial film webs can be arranged in the work area overlapping vacuum chambers. Thus, the film storage 26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1 and 32.2 can be divided advantageously into several parallel vacuum chambers.
  • separating devices can be inserted into the vacuum chambers and / or are displaceable in the vacuum chambers transversely to the running direction of the film or partial film webs 5, it is thus possible to provide width-adjustable and separate vacuum chambers. These are tunable to individual film webs 5 of different widths or partial film webs of the same or different widths. Thus, the formation of film loops 29, 36 is improved and tailored to each leading to foil or Operafolienbahnen.
  • the suction at the vacuum chambers of the film stores 26.1, 27.1, 28.1, 32.1 on the feed side to the transfer area can also serve to clean the film webs.
  • particles which adhere to the web edge (mica, dust, contamination) are sucked into the vacuum chambers and removed via the suction devices. Therefore, it is advantageous if at least one filter device is provided in the vacuum supply of the vacuum chambers, which serves to separate the contaminants. This can be done simultaneously with the storage of film loops 29, 36 and a cleaning of the film web, so that the transfer process runs undisturbed and the coating unit 2 is kept clean.
  • the arrangement of the film storage 26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1 and 32.2 and the drive groups 22, 33 may be designed so that they are interchangeable in existing film transfer devices against dancer.
  • a more efficient film guide for existing systems can be retrofitted in a simple manner.
  • the film guide can also be interrupted when the press roller 3 has an only partially occupied pressing surface, so that the film web can be stopped during the passage of not occupied with a pressing surface areas in the transfer nip 6.
  • the film supply and removal can be performed with controllable or self-regulating systems such as friction shafts and individual drives on the film rolls 8, 9 in the variants of a format-wide film roll or with multiple sub-film rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Methods (AREA)

Claims (10)

  1. Dispositif de transfert de couches d'imagerie d'un film support à des feuilles imprimées dans une machine d'impression offset de feuilles comportant au moins un équipement d'enduction (1) pour un revêtement imagé des feuilles imprimées avec une colle et comportant un module de revêtement (2) pour transférer les couches d'imagerie du film support aux feuilles imprimées dans un interstice de transfert (6) entre le cylindre de contre pression (4) et un rouleau presseur (3), dans lequel le film support avec les côtés revêtus sur les feuilles imprimées peut être conduit dans l'installation conjointement à celle-ci à travers l'interstice de transfert (6) et ainsi les couches d'imagerie peuvent être transférés sur les feuilles imprimées imagées et comportant un dispositif d'introduction du film de transfert (5) dans l'équipement de revêtement (2) et de retrait de l'équipement de revêtement (2) avec un entraînement pour déplacer le film de transfert dans la direction de travail, dans lequel l'avance des films du film de transfert (5) peut être commandée au moyen d'un dispositif de guidage de film de sorte que le transport du film de transfert (5) puisse ensuite être arrêté lorsque dans l'interstice de transfert (6) de l'équipement de revêtement (2) aucun transfert d'une couche d'imagerie sur une feuille imprimée n'a lieu, en ce que une unité de commande en liaison avec un guidage de film de transfert (5) est prévue de telle sorte que, lors du passage d'un canal de cylindre (22) renfermant le cylindre de contre pression (4) guidant un dispositif de préhension de feuilles, le rouleau presseur (3) de l'avance de films est arrêté, dans lequel le rouleau presseur (3) se déplace par glissement sous un contact supplémentaire du film de transfert (5) et/ou en ce que comme la surface du rouleau presseur (3) est prévu un entoilage de presse (10) avec une surface de pressage agrandie, aux contours marqués, dans lequel la surface de pressage est délimitée à la zone maximale à revêtir et en ce que lors du passage d'une zone, le rouleau presseur (3) est arrêté à l'extérieur de la surface de pressage délimitant la zone à revêtir de l'avance de films, dans lequel le rouleau presseur (3) se déplace par glissement sous un contact supplémentaire du film de transfert (5), dans lequel le train de feuilles (5) est coordonné à des dispositifs de transport pouvant être commandés pour freiner et accélérer en synchronisation avec le déroulement du transfert de film, caractérisé en ce que les dispositifs de transport (22, 33) sont réalisés comme des paires de rouleaux composées respectivement d'un rouleau guideur de feuilles (24) et d'un rouleau d'entraînement (23), dans lequel les paires de rouleaux guident le train de feuilles (5) par serrage et dans les rouleaux guideurs de feuilles (24) que les rouleaux d'entraînement (23) peuvent être entraînés, en ce que les dispositifs de transport (22, 33) sont coordonnés à une zone de transfert avant et après l'interstice de transfert (6) et en ce que les dispositifs de transport (22, 33) sont coordonnés à des dispositifs de stockage de feuilles (26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1, 32.2), dans lequel le dispositif de stockage de feuilles (26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1, 32.2) sont réalisées respectivement comme des chambres de dépression renfermant au moins une boucle de feuilles (29, 36) du train de feuilles (5), qui sont conçus pour aspirer l'air au moyen d'un ou plusieurs ventilateurs sur le côté de base.
  2. Dispositif selon la revendication 1, caractérisé en ce que le film de transfert (5) est divisé en un ou plusieurs trains de feuilles partiels de largueur réduite et en ce que les trains de feuilles partiels sont positionnés, respectivement sont alimentés à côté de l'interstice de transfert (6), dans lequel les trains de feuilles partiels sont pourvus de couches d'imagerie identiques ou différentes les unes des autres et des couches de couleurs différentes et/ou de brillances différentes et/ou de structures de surfaces différentes peuvent être produites.
  3. Dispositif selon la revendication 1 à 2, caractérisé en ce que les dispositifs de transport (22, 33) sont coordonnés à une zone de transfert avant l'interstice de transfert (6) ou respectivement avant et après l'interstice de transfert (6) et en ce que les dispositifs de transport sont coordonnés à un dispositif de stockage de feuilles (26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1, 32.2).
  4. Dispositif selon la revendication 1 à 3, caractérisé en ce que les dispositifs de stockage de feuille (26.1, 26.2, 27.1, 27.2, 28.1, 28.2, 32.1, 32.2) sont réalisés comme des chambres de dépression renfermant une ou plusieurs boucles de feuilles (29, 36) d'un train de feuilles (5) ou plusieurs trains de feuilles partiels, dans lequel les chambres de dépression présentent un ou plusieurs dispositifs de séparation pour délimiter des zones de dépression dans la largeur d'un ou plusieurs trains de feuilles cu trains de feuilles partiels.
  5. Dispositif selon la revendication 4, caractérisé en ce que les chambres de dépression présentent des dispositifs d'aspiration pour générer une dépression, dans lequel au moyen d'un ou plusieurs des dispositifs d'aspiration des adhérences peuvent être aspirées du ou des trains de feuilles (5) et en ce que des dispositifs de filtrage pour séparer les adhérences sont coordonnés aux dispositifs d'aspiration.
  6. Procédé de revêtement de feuilles imprimées dans une machine d'impression offset de feuilles au moyen d'un dispositif selon la revendication 1 en utilisant un film de transfert (5) formé de couches d'imagerie et d'un film support pour transférer des couches d'imagerie du film support aux feuilles imprimées, caractérisé en ce que
    - au moins avec un équipement d'enduction (1) un revêtement imagés d'une feuille imprimée avec une colle a lieu, et
    - au moyen d'un module de revêtement (2) un transfert des couches d'imagerie du film support aux feuilles imprimées a lieu, dans lequel dans le module de revêtement (2) un cylindre de contre pression (4) et un rouleau presseur (3) définissent un interstice de transfert commun (6) à travers lequel le film de transfert (5) peut être guidé sous pression de telle sorte qu'il soit appliqué avec le côté revêtu sur la feuille imprimée guidée sur le cylindre de contre pression (4),
    - dans lequel la/les couches d'imagerie après la sortie de la feuille imprimée hors de l'interstice de transfert (6) adhèrent au niveau des zones pourvues de colle imagées sur la feuille imprimée de manière conforme à la surface et son soulevées du film support, dans lequel le film de transfert (5) dans l'interstice de transfert (6) est pressé au moins au niveau du ou des revêtements imagés contre la feuille imprimée et
    - dans lequel le film de transfert (5) est transporté à travers l'interstice de transfert (6) seulement lorsqu'un contact entre la surface du rouleau presseur (3) et le support d'impression reposant sur le cylindre de contre pression (4) est établi,
    caractérisé en ce que
    - le film de transfert (5) peut être stocké avant l'introduction vers l'interstice de transfert (6) lors de l'introduction progressive pendant une étape dans laquelle aucun transfert de feuilles n'a lieu, dans un premier dispositif de stockage de feuille, dans lequel le/les trains de feuilles (5) sont guidés avant l'interstice de transfert (6) sous l'action de la dépression dans les dispositifs de stockage de feuille avec des chambres de dépression formant des boucles de feuilles et
    - le film de transfert est transporté avant l'entrée dans l'interstice de transfert (6) par une paire de rouleaux (23, 24) formant un groupe d'entraînement (22),
    - et en ce que le film de transfert (5) après la sortie de l'interstice de transfert (6) est transporté par une paire de rouleaux (23, 24) formant un groupe d'entraînement (22),
    - en ce que le film de transfert (5) après le retrait et de l'interstice de transfert (6) lors de l'introduction par étapes pendant une étape, dans laquelle aucun transport de feuilles n'a lieu, doit être transportée à partir d'un deuxième dispositif de stockage de feuilles,
    - dans lequel le/les trains de films de transfert (5) après l'interstice de transfert (6) sont guidés sous l'action de la dépression dans le dispositif de stockage de feuille avec des chambres de dépression formant des boucles de feuilles.
  7. Procédé selon la revendication 6, caractérisé en ce que sur le rouleau presseur (3) sont montés un ou plusieurs segments de pressage, qui présentent une surface de pressage, dont la surface est adaptée à la dilatation en surface des revêtements imagés et en ce que le film de transfert (5), vu axialement au rouleau presseur (3), est introduit dans l'interstice de transfert (6) uniquement au niveau des sections d'axe pourvues des surfaces de pressage.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que sur le rouleau presseur (3) sont montés un ou plusieurs segments de pressage, dont la surface de pressage est adaptée à la dilatation en surface des revêtements imagés et en ce que le film de transfert (5), vu dans la direction circonférentielle par rapport au rouleau presseur (3), est introduit dans l'interstice de transfert (6) uniquement au niveau des sections circonférentielles pourvues des surfaces de pressage.
  9. Procédé selon la revendication 6 à 8, caractérisé en ce que le film de transfert (5) est introduit dans l'interstice de transfert (6) progressivement dans les sections d'axe, dans lesquelles une garniture de surfaces de pressage (21) est présente.
  10. Procédé selon la revendication 6, caractérisée en ce que le film de transfert (6) dans le dispositif de stockage de feuille est nettoyé au moyen des dispositifs d'aspiration des chambres de dépression prévues.
EP09761592.6A 2008-05-28 2009-05-25 Dispositif de gaufrage de feuilles à froid Active EP2296891B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008002047 2008-05-28
DE102009026438A DE102009026438A1 (de) 2008-05-28 2009-05-25 Vorrichtung zum Kaltfolienprägen
PCT/EP2009/056291 WO2009150029A1 (fr) 2008-05-28 2009-05-25 Dispositif de gaufrage de feuilles à froid

Publications (2)

Publication Number Publication Date
EP2296891A1 EP2296891A1 (fr) 2011-03-23
EP2296891B1 true EP2296891B1 (fr) 2018-10-17

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EP (1) EP2296891B1 (fr)
JP (1) JP2011522719A (fr)
CN (1) CN102046382B (fr)
DE (1) DE102009026438A1 (fr)
WO (1) WO2009150029A1 (fr)

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DE102011007462A1 (de) 2010-05-17 2011-11-17 Manroland Ag Formatbezogenes Kaltfolienprägen
DE102012219600A1 (de) 2011-10-29 2013-05-02 manroland sheetfed GmbH Folientransportverfahren für Folientransfereinrichtung
DE102014108718A1 (de) 2013-06-28 2014-12-31 manroland sheetfed GmbH Formatbezogenes Kaltfolienprägen
DE102014108767A1 (de) 2013-07-02 2015-01-08 manroland sheetfed GmbH Produktion mit Takteinrichtung für den Kaltfolientransfer
CN203331578U (zh) * 2013-07-03 2013-12-11 广东金玉兰包装机械有限公司 兼具冷烫功能的多色印刷机组
DE102013109477A1 (de) * 2013-08-30 2015-03-05 Hermann Hogg Verfahren zur Herstellung von Fingernagel-Tips
JP2016117264A (ja) * 2014-12-24 2016-06-30 リョービＭｈｉグラフィックテクノロジー株式会社 印刷機
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DE102016000662A1 (de) * 2016-01-22 2017-07-27 Heidelberger Druckmaschinen Ag Vorrichtung zum Heißfolienprägen
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CN106218214A (zh) * 2016-09-12 2016-12-14 东莞市源铁印刷机械有限公司 一种自动化丝印印刷设备
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Publication number Publication date
EP2296891A1 (fr) 2011-03-23
WO2009150029A1 (fr) 2009-12-17
CN102046382A (zh) 2011-05-04
DE102009026438A1 (de) 2009-12-03
CN102046382B (zh) 2013-07-24
JP2011522719A (ja) 2011-08-04

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