EP1752289A2 - Système de contrôle pour le guidage d'un film - Google Patents

Système de contrôle pour le guidage d'un film Download PDF

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Publication number
EP1752289A2
EP1752289A2 EP06015125A EP06015125A EP1752289A2 EP 1752289 A2 EP1752289 A2 EP 1752289A2 EP 06015125 A EP06015125 A EP 06015125A EP 06015125 A EP06015125 A EP 06015125A EP 1752289 A2 EP1752289 A2 EP 1752289A2
Authority
EP
European Patent Office
Prior art keywords
film
web
transfer
detecting
foil
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.)
Withdrawn
Application number
EP06015125A
Other languages
German (de)
English (en)
Other versions
EP1752289A3 (fr
Inventor
Uwe Püschel
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 AG
Original Assignee
Manroland AG
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manroland AG, MAN Roland Druckmaschinen AG filed Critical Manroland AG
Publication of EP1752289A2 publication Critical patent/EP1752289A2/fr
Publication of EP1752289A3 publication Critical patent/EP1752289A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/14—Automatic control of tripping devices by feelers, photoelectric devices, pneumatic devices, or other detectors
    • 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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/18—Web break detection
    • 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

Definitions

  • the invention relates to a device for transferring imaging layers from a carrier film to printing sheet according to the preamble of patent claim 1.
  • 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 unit, being brought by means of the press roller on the impression cylinder resting sheet with the film material in combination. The metal layer lying downwards is in close contact with 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 units, for example in printing units of printing presses. A disadvantage of the known devices is that they are not flexible and that the supply of the transfer film is complicated and difficult to handle.
  • 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 on a sheet can be done safely, economically and safely, the device should be easy to handle.
  • an imaging layer e.g. a metallization layer on a sheet
  • a feed device is used to guide the transfer film, in which the transfer film is monitored by sensors during supply to the transfer nip and the discharge to the transfer nip.
  • An associated device for supplying and discharging the transfer film advantageously has a guide device in the form of guide rollers or stationary guide devices, by means of which the supply to the transfer nip and the discharge to the transfer nip is made possible in a simple manner.
  • Web tear detection of the film web can be carried out by means of an ultrasonic sensor by direct scanning of the film web in a freely guided section.
  • the web tear detection can also be done with capacitive sensors by direct scanning against elements that lead the film web touching.
  • the web tear monitoring can also be carried out indirectly via a web tension measuring device, wherein the presence of the film web is detectable by measuring radially directed bearing forces of a measuring roller, which is wrapped by the web or coating film.
  • a measuring amplifier evaluates the electrical signals. If the web tension forces during operation deviate from predetermined values by falling below a minimum value or exceeding a maximum value, this is evaluated as a crack or overloading of the film and fed to the machine control.
  • Possible installation locations for the measuring device are on the roll-up device on the unwinding device in the region of film guide rolls or on a dancer roller.
  • the device can be used in an advantageous manner if an improvement in film utilization is to be achieved by dividing the transfer film into one or more partial film webs of lesser width. In combination with the above-mentioned method, it is thus also possible to use different types of film side by side.
  • the applicator 1 may be a known offset printing unit with an inking unit 11 a plate cylinder 12, a blanket cylinder 13 and a sheet leading impression cylinder 4.
  • the applicator 1 may be a so-called paint module, in which case the blanket cylinder 13 is formed as a forme cylinder, which preferably carries a printing plate in the manner of a high-pressure plate.
  • the forme cylinder is supplied with paint or adhesive from a device designed, for example, as a chamber doctor blade system or roller dosing system instead of the inking unit 11.
  • 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, the blanket cylinder and the impression cylinder 4 correspond to the impression cylinder of an offset printing unit.
  • the press roller 3 can correspond to the forme cylinder and the impression cylinder 4 to the impression cylinder of a paint module of a sheet-fed press.
  • UV adhesives are crosslinking media when exposed to UV light, which dry quickly and can be used on difficult substrates such as film materials.
  • an inspection device 17 can be arranged downstream of the transfer nip 6, which serves to check the quality and completeness of the coating.
  • a camera-technical recording of the printed sheet which preferably takes place line by line, the current image content can be compared with an image of a goodwill and checked for errors.
  • the transfer films 5 have a multilayer structure. They have a carrier layer on which an imaging layer is applied by means of a release layer.
  • the separating layer serves to facilitate lifting of the imaging layer from the carrier layer.
  • the image-forming layer may be, for example, a metallized layer or a glossy layer or a texture layer or a colored layer or a layer containing one or more image patterns.
  • 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.
  • the rotary drive 7 is required for the continuous controlled feeding of the transfer film to the coating unit 2 and is therefore controllable.
  • a deflecting or tensioning roller is provided in the region of the film feed.
  • the film web of the transfer film is always held in the same voltage against the press roller 3.
  • a film collection roller 9 is shown on the film collecting roll 9, the consumed Foil material wound up again.
  • a rotary drive 7 is provided for the optimized production, which is controllable.
  • the transfer film 5 could also be moved by the rotary drive 7 on the discharge side and kept taut on the inlet side by means of a brake.
  • the transfer process of the imaging eg metallized layer on the printing paper takes place in the transfer nip 6 between the press roller 3 and the impression cylinder.
  • the press roll 3 may be a blanket cylinder of an offset printing unit.
  • the press roll 3 can also be the forme cylinder of a paint module. It is essential that the surface of the press roll 3 so the blanket cylinder or forme cylinder is equipped by means of a compressible, damping element.
  • a press roll 3 ' as indicated in Figure 1 in the applicator 1, the transfer gap between blanket cylinder 13 and impression cylinder 4 downstream and assigned to the impression cylinder 4.
  • a transfer film 5' can be placed on a sheet held on the printing cylinder 4, so that the image-forming or metallizing layer can be made there directly downstream of the imaging adhesive application.
  • the press roll 3 should therefore be provided with a press fabric 10, for example as a plastic coating, comparable to a blanket or blanket.
  • the press fabric 10 is held in a cylinder channel on jigs.
  • the press fabric 10 is equipped to improve the transmission properties in the transfer nip 6 with a targeted elasticity. This may optionally act in a compressible intermediate layer. This compressibility is preferably similar or less than in conventional blankets or blankets, which can also be used at this point.
  • the mentioned compressibility can be produced by means of a conventional compressible printing blanket.
  • combined fabrics made of a hard blanket and a soft pad can be used.
  • directly on the press roll 3 or on the press fabric 10 a be provided limited pressing surface. This can be worked out of the surface of the press fabric 10 or it can be additionally attached as a partial surface of the material of the press fabric 10 on the press roller 3.
  • the film advance of the transfer film 5 from the film supply roll 8 to the transfer nip 6 and the film collection roll 9 is controllable so that as far as possible the transfer film 5 is stopped when no transfer of the imaging layer should take place :
  • a control of the transfer film 5 can be made such that the film feed is stopped when passing through a gripper of the sheet-guiding counter-pressure cylinder 4 receiving cylinder channel.
  • the grippers hold the printed sheet on the impression cylinder 4.
  • the press roll 3 has a cylinder channel. In the region of the cylinder channel, there is no pressing of the transfer film 5 between the press roller 3 (blanket cylinder) and the impression cylinder 4, since both cylinders have this cylinder channel.
  • the press roll 3 then slidably passes under the transfer sheet 5, while the transfer sheet 5 between the press roll 3 and impression cylinder 4 is freely stretched. This state continues until at the so-called pressure beginning of the cylinder channel ends and the transfer film 5 is again clamped between the press roller 3 and the impression cylinder 4, including a sheet. Then, the transfer sheet 5 is further transported.
  • the timing of the film feed can begin or suspend slightly earlier than pretend the channel edges of the cylinder channel according to a necessary acceleration or braking of the film supply roll 8 or film collecting 9.
  • dancer rollers 18 as they are shown by way of example in FIG. 1, the control of the rotary drives 7 of the film supply rolls 8 or film collecting roll 9 may not be necessary.
  • the associated device includes but basically a corresponding feed control for the transfer sheet 5, which ensures that at least that between the press roller 3 and the impression cylinder 4 lying film piece is stationary as long as the cylinder channel passes.
  • a further improvement of the film utilization of the type described results from the fact that 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.
  • each partial film web is conveyed only exactly in the area where the imaging surface layer is to be applied. In the areas not to be coated, each partial film web can be stopped independently of the other partial film webs, whereby no unnecessary film consumption arises.
  • a web guide for transfer films 5 is shown within the coating unit 2 used for the film transfer.
  • the web guide essentially has film guide rollers 14 by means of which the transfer film 5 is fed to the transfer nip 6 and discharged therefrom.
  • openings in existing on the coating unit 2 protections 15 are provided. These openings are designed so that the film webs 5 are easily fed and discharged and at the same time the protective function of the protection is fully retained.
  • the main variant provided is an approximately tangential film guide between the press roll 3 and the counter-pressure cylinder 4 with respect to the press roll 3 or the wrap of the press roll 3 by less than 90 degrees. This is intended to achieve a defined contact of the film web 5 on the press roller 3 and at the same time create the necessary conditions for film timing or film discontinuity in the transfer nip 6 during a channel pass, but also for the use of narrow film webs 5.
  • the inventive problem of web tear detection on the transfer film 5 is of great importance for the production process. On the one hand, it is important to quickly recognize when the transfer film 5 is no longer supplied to the transfer nip 6, since then no more film transfer can take place and inevitably waste arises. Even more important in terms of operational reliability is the detection of the continuous removal of the film web 5 from the transfer nip 6.
  • a web guide according to the above variants a. and b. For example, a web break after the transfer nip 6 may cause the transfer sheet 5 to wrap around the press roll 3 and be wound on the press roll 3. When exceeding a certain thickness of the wound-up transfer film 6, this can lead to machine damage to the coating unit 2.
  • the transport of the transfer film 5 on or between film guide rollers 14 can be performed by means of a capacitive sensor 20 or an ultrasonic sensor 21.
  • the web crack detection can take place according to FIG. 2 with capacitive sensors 20.
  • the capacitive sensor 20 is based on the operation of a plate capacitor. It does not matter if the film web 5 is conductive or non-conductive. Thus, the capacitive sensor 20 is very well on the Folieneinlauf- - or outlet side. On the inlet side, the unused film may be conductive and after application by detachment of the metallization of the base film, it is no longer conductive.
  • the capacitive sensor 20 is positioned at a fixed distance to a metallic surface opposite, for example, a film guide roll. The output signal can be detected according to the level of a foil tear. If the transfer film 5 passes through the gap between the sensor 20 and the film guide roller 14, the signal size will change. This signal difference can be used for film tear or web tear detection.
  • An ultrasonic sensor 21 can be designed according to Figure 3 with separate components and be directed to a stretched between film guide rollers 14 segment of the film web 5. It only receives signals as long as the film web 5 is present in a directed on their way of the scanning beam 22 of the ultrasonic sensor 21. Transmitter and receiver may optionally be assigned separately from each other the film web 5.
  • the web crack detection can be done by means of a shielded in a housing ultrasonic sensor 21.
  • the principle of an ultrasonic sensor 21 uses the emitted sound waves of a scanning beam 22, which are reflected on the surface of the film web 5.
  • the time course to the received signals corresponds to a certain way. As a mounting location, a position between two film guide rollers 14 is advantageously provided. Under the film web 5 while a greater distance to be given next reflective surface. Thus, in the absence of the film web 5, the signal propagation time can be used to evaluate the film or web break.
  • the capacitive or ultrasonically operated sensors 20, 21 are less sensitive to reflection of scattered light or transmitted light. There is no need to adapt to changing slides.
  • transmitter and receiver can be positioned to save space in a single housing. This arrangement is also low maintenance and easy to clean.
  • the sensory detection of a film web 5 can also take place in the area of flat, fixed film guiding devices.
  • sensors 20, 21 for determining the presence of transfer film 5 are mounted opposite or in the free space of such film guide devices and the signals generated are evaluated according to the above.
  • the transport of the transfer film 5 on or between film guide rollers 14 can therefore be monitored by means of monitoring the web tension of the film web 5.
  • one or more web tension measuring devices 23, 25 are provided in a film web guide, which has force measuring devices.
  • the principle is based on the measurement of radially directed bearing forces of a guide roll substantially centric to the withdrawal directions of the sheeting around the film web 5.
  • the Folienriss- or web break detection can be carried out at a significant drop in the measured force below a defined threshold.
  • a web tension measuring device 23 can be arranged on a film deflecting roller 14 of the web guide of the film web 5.
  • the reaction force of the film web 5 is determined on the storage of Folienumlenkwalze 14 preferably at an angle of 45 ° on the inside to the right-angled deflection of the film web 5.
  • a web tension measuring device 23 can also be arranged on a separate measuring roller 24 within the web guide of the film web 5.
  • the reaction force of the film web 5 on the bearing of the measuring roller 24 is preferably determined at an angle in accordance with the angle bisector on the inside of the deflecting web guide of the film web 5.
  • a web tension measuring device can advantageously also be arranged on a dancer roller 18 within the web guide of the film web 5, since this serves to maintain the web tension. Instead of a merely adaptive response to changes in web tension, detection of the web tension in a meaningful manner is qualitatively and / or quantitatively possible here.
  • the measurement of a reaction force can also be carried out in the area of flat, fixed Folienleit wornen.
  • sensors for determining the reaction force from the load by the deflected film web are mounted relative to a frame-fixed holder and the signals generated are evaluated in accordance with the above.
  • the additionally obtained information about the web tension as the actual value, in particular in the context of the mentioned evaluations, can be used for the control of the printing or transfer process.
  • the system for web tear monitoring is connectable to a control station of the printing press.
  • the setpoints for maximum and minimum web tension can be entered via the control station. 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 substrate, 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.
  • Possible installation locations for measuring devices with web tension measuring devices 23 or 25 can be provided on the film collecting roll 9 or roll-up device, on the film supply roll 8 or unwinding device, in the region of film guide rolls 14 or on a dancer roll 18.
  • the sensors 20, 21 or the web tension measuring devices 23, 25 can be assigned to each of the partial film webs when using a plurality of partial film webs. It is also possible to simplify the joint monitoring of multiple partial film webs.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP06015125A 2005-08-09 2006-07-20 Système de contrôle pour le guidage d'un film Withdrawn EP1752289A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510037496 DE102005037496A1 (de) 2005-08-09 2005-08-09 Überwachungseinrichtung einer Folienführung

Publications (2)

Publication Number Publication Date
EP1752289A2 true EP1752289A2 (fr) 2007-02-14
EP1752289A3 EP1752289A3 (fr) 2010-12-22

Family

ID=37440639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06015125A Withdrawn EP1752289A3 (fr) 2005-08-09 2006-07-20 Système de contrôle pour le guidage d'un film

Country Status (4)

Country Link
EP (1) EP1752289A3 (fr)
JP (1) JP2007045146A (fr)
CN (1) CN1911656B (fr)
DE (1) DE102005037496A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1815982A3 (fr) * 2005-12-27 2007-12-26 MAN Roland Druckmaschinen AG Guidage de feuilles dans un dispositif d'estampage
EP1985448A2 (fr) 2007-04-25 2008-10-29 manroland AG Guidage de feuille dans un agrégat de feuilles à froid
DE102020127048A1 (de) 2020-10-14 2022-04-14 Mayr-Melnhof Karton Ag Rotationsdruckeinrichtung und Verfahren zum Betreiben einer Rotationsdruckeinrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008000743B4 (de) * 2007-04-25 2013-05-08 manroland sheetfed GmbH Folienführung in einem Kaltfolienaggregat
JP5095331B2 (ja) * 2007-09-20 2012-12-12 リョービ株式会社 印刷用紙への転写方法及び転写装置
EP2275812A1 (fr) 2009-07-15 2011-01-19 Stichting Dutch Polymer Institute Appareil de surveillance des propriétés mécaniques d'un corps filamenteux ou planaire mobile et procédé de surveillance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569520B1 (fr) 1991-01-29 1996-01-17 CROS, Jean-Pierre Materiau pour impression et installation d'impression au moyen de ce materiau

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WO1986002339A1 (fr) * 1984-10-12 1986-04-24 Mitsubishi Jukogyo Kabushiki Kaisha Dispositif de commande de la tension d'une machine a imprimer rotative
DE4039108C1 (fr) * 1990-12-07 1992-04-16 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
JPH0648627A (ja) * 1992-07-30 1994-02-22 Komori Corp 張力制御装置及びその方法
US5398610A (en) * 1993-03-25 1995-03-21 Baldwin Web Controls Anti-wrap device for a web press
US5678484A (en) * 1993-03-25 1997-10-21 Baldwin Web Controls Anti-wrap device for a web press
DE9420707U1 (de) * 1994-12-24 1995-02-16 Steuer Armin Präge-Rotationsmaschine
DE19827190A1 (de) * 1998-06-18 1999-12-23 Koenig & Bauer Ag Verfahren und Vorrichtung zur Überwachung einer Materialbahn
DE19834725A1 (de) * 1998-07-31 2000-02-03 Wifag Maschf Bahnspannungsregeleinrichtung
ATE226520T1 (de) * 1998-09-08 2002-11-15 Kba Giori Sa Sicherheitsdruckmaschine für wertpapiere
TW577814B (en) * 2001-09-27 2004-03-01 Toshiba Corp Printing device and printing method
US6873348B1 (en) * 2002-01-29 2005-03-29 Nisca Corporation Printing method and printing system and printing apparatus
CN1164423C (zh) * 2002-07-24 2004-09-01 高国明 平张胶印卷筒彩印不干胶商标的生产工艺
DE10335887B4 (de) * 2003-08-06 2007-11-08 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zum Regeln eines Schnittregisterfehlers und einer Bahnzugkraft einer Rollenrotationsdruckmaschine
CN2644014Y (zh) * 2003-09-28 2004-09-29 汕头市远东轻化装备有限公司 一种复合涂布机的收卷装置
WO2005066051A1 (fr) * 2004-01-07 2005-07-21 Pepperl + Fuchs Gmbh Procede et dispositif pour la detection sans contact d'objets plans
DE102005011570A1 (de) * 2004-04-13 2005-11-03 Man Roland Druckmaschinen Ag Prägeeinrichtung für Bedruckstoffe mit strukturierter Oberfläche in einer Bogendruckmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569520B1 (fr) 1991-01-29 1996-01-17 CROS, Jean-Pierre Materiau pour impression et installation d'impression au moyen de ce materiau

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1815982A3 (fr) * 2005-12-27 2007-12-26 MAN Roland Druckmaschinen AG Guidage de feuilles dans un dispositif d'estampage
EP1985448A2 (fr) 2007-04-25 2008-10-29 manroland AG Guidage de feuille dans un agrégat de feuilles à froid
EP1985448A3 (fr) * 2007-04-25 2010-01-20 manroland AG Guidage de feuille dans un agrégat de feuilles à froid
DE102020127048A1 (de) 2020-10-14 2022-04-14 Mayr-Melnhof Karton Ag Rotationsdruckeinrichtung und Verfahren zum Betreiben einer Rotationsdruckeinrichtung
EP3984746A1 (fr) 2020-10-14 2022-04-20 Mayr-Melnhof Karton AG Dispositif d'impression rotative et procédé de fonctionnement d'un dispositif d'impression rotative

Also Published As

Publication number Publication date
CN1911656B (zh) 2010-06-23
EP1752289A3 (fr) 2010-12-22
CN1911656A (zh) 2007-02-14
JP2007045146A (ja) 2007-02-22
DE102005037496A1 (de) 2007-02-15

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