EP1829685B2 - Film transfer device with variable film sheet guidance - Google Patents

Abstract

The device has a printing machine for printing on a material, a foil module with a one transfer foil supply roller and a transfer foil course. A transfer foil control device is provided for guiding the transfer foil course from the foil supply roller to a transfer gap along a foil transportation path. The control device for course guiding devices (19, 20, 21) has a printing machine (2) for a transfer foil course (3) and alternatively to different positions for the printing machine (2).

Description

The present invention relates to a device for transferring a transfer layer from a carrier film, which together form a transfer film, to a printing material comprising at least one printing machine for imaging the printing substrate, at least one film module having at least one transfer film supply roll for storing and unwinding at least one transfer film web, a transfer film guide device at least for guiding the transfer film web from the transfer film supply roll to a transfer nip along a film transport path, wherein the transfer nip is formed by an impression cylinder and a film transfer cylinder for transferring the transfer layer to the substrate, for which the substrate is passed along a substrate transport path through the transfer nip and a transfer film take-up roll for take-up the guided through the transfer nip transfer film web.

This device preferably relates to the method of so-called cold foil stamping.

In cold foil stamping, a transfer layer is transferred from a substrate to a substrate.

The carrier material used is a carrier film. On this carrier film, a lacquer layer is applied, which is responsible in particular for the coloring of the transfer layer. Connected to the lacquer layer is an aluminum layer, which causes the metallic luster of the transfer layer. Furthermore, a further adhesive layer can be provided on the aluminum layer, which improves the adhesive properties of the transfer layer with the adhesive on the printing substrate. The layers which are transferred from the carrier material is referred to as a transfer layer.

In order to transfer the transfer layer to a printing substrate, the transfer film is passed through a transfer nip together with the printing substrate. The transfer nip is formed by a transfer cylinder and an impression cylinder, which abut each other. Transfer cylinder and impression cylinder are rotated together with a force to each other, that in the transfer nip, the transfer layer is transferred to the substrate.

In order for a transfer of the transfer layer to the substrate area by area, the substrate is provided with an adhesive layer before the film transfer which corresponds to the area in which the film is transferred.

The adhesive used may be a colorless adhesive, an adhesive with a certain intrinsic color, or a glue colored according to the film. Already from the Bronzierungstechnik it is already known to transfer metal particles to use a particularly sticky color whose color corresponds to the desired metallization. In this respect, of course, a sticky color can also be used as an alternative to a colored adhesive.

The transfer layer can essentially be a metal layer but also other layers. For example, may be provided an aluminum layer, which is applied as needed on a yellow / golden lacquer layer or a silver-colored lacquer layer.

Furthermore, as the transfer layer, a colorless layer e.g. be used from PE film, which is transferred to the substrate so that it forms a protective layer there.

The use of a conductive layer as a transfer layer is possible, thereby electrically and / or thermally conductive area can be transferred to the substrate. The transfer of prepared delimited layer regions as a transfer layer is also possible, which may be, for example, RFID chips or their antennas. It is also possible to transfer suitable ceramics. In this way, it is conceivable that superconducting structures can be transferred to a printing substrate.

A generic device for cold foil stamping is in the EP 0 578 706 B1 presented.

Here, the cold foil stamping takes place within a multi-color printing machine. The printing material is transported along a predetermined transport path in the printing press. The printing material may be, for example, paper sheets, paperboard or even rolls.

In a first printing unit of the printing press, an adhesive is transferred to the substrate instead of a paint. For application of the adhesive in regions a correspondingly imaged printing plate is clamped in this printing unit and the adhesive is transferred onto the printing substrate like a conventional offset printing ink.

The printing material is then transported further into a second printing unit. In this second printing unit, the impression cylinder and the blanket cylinder are designed as a transfer unit.

In the area of this second printing unit there is a film module with a transfer ribbon supply roll and a transfer ribbon collection roll. Via intermediate rolls of a film guiding device, the film is guided from the transfer film supply roll to the transfer nip and on to the transfer film collection roll.

To transfer the transfer layer to the printing substrate, the transfer film and the printing material with the area-wise adhesive layer are passed together through the transfer nip so that the transfer layer rests on the adhesive layer. The transfer layer is then transferred onto the substrate by printing in the transfer nip. The adhesive removes the transfer layer cleanly from the transfer film.

For a clean transfer of the transfer layer to the substrate, the film and the Printing material in the area of the transfer nip during the transfer at the same speed.

In the case of the device presented here, the film module is assigned exactly to the printing unit in which a film transfer is provided.

If, for example, in a first print job color layers are first applied in first printing units and then a protective layer or a metal layer is transferred from a transfer film to the printing substrate, then the printing unit for adhesive application is located with the subsequent printing unit that is designed as a transfer unit behind the inking ends printing units.

If now in a second print job, a metal layer is to be transferred to the substrate before the application of paints, it is necessary that the complete film module with supply roll, collecting role and film guide is removed from the printing unit and placed on a, upstream of the other printing units printing unit becomes. In front of this printing unit then another printing unit for the adhesive application must be provided. A flexible setup of the device, so that a film transfer is made possible at different positions is not possible here.

The object of the present invention is therefore to overcome the described problem in the prior art, but at least to reduce.

From the DE 10 2005 011 571 A1 Although a film transfer module is known, which describes different possible ways for the transfer film, here are the different ways but limited to different wrap paths for one and the same transfer cylinder. A more flexible setting of a film transfer device is also not possible hereby.

The object is achieved by a device of the abovementioned type according to claim 1.

By web guiding elements, which are associated with the film guiding device, the transfer film web is guided. These web guiding elements support at least the guidance of the film web along the film transport path from the transfer film supply roll of a film module to a cylinder in which at least one printing press is formed. It can be e.g. a blanket cylinder and a counter-pressure cylinder, an extra staffed foil transfer cylinder and the impression cylinder or in an advantageous embodiment, this may also be a sheet transfer cylinder and an employee employed thereon foil transfer cylinder.

The web guiding elements are provided in the region of the at least one printing press so that they are suitable for transfer film web to at least two mutually different positions, i. optionally to lead to a first or to a second position.

In this way, a simple and flexible retooling of the printing press for various tasks can be ensured. The film module is provided in one place and is left there, independent of the location required for the film transfer, depending on the order. Alone by the provided web guide elements a flexible web guide for the transfer film web is made possible. As a result of the web guiding elements, the film can be guided to at least two mutually different positions. These positions may be, for example, possible transfer gaps in the printing press. Depending on requirements, the film can then be guided either to a first transfer nip or a second transfer nip. It can also be provided with two different film webs that they are guided by one or two different film modules to two different positions in the printing press. As can be seen, this advantageously makes possible a very flexible web guide for the film web to different positions on the at least one printing machine, without the need for complex repositioning of the film module or the film modules. It suffices a device of the film with respect to the already provided web guide elements to achieve this flexibility. The foil module itself does not have to be assigned directly to any printing unit.

In an advantageous embodiment, it is provided that the web guide elements are positioned in the region of the at least one printing press so that they can guide the transfer film web from the film module to at least two mutually different positions on the printing press. Here, the film module is fixedly provided in the region of a printing press and according to the invention at least two different positions on this printing machine, the transfer film is guided by means of the web guide elements.

In an advantageous alternative embodiment, it is provided that the at least one film module is provided in a printing press room. At least two printing presses are present in this printing press room. However, it is also possible to provide more printing presses and more film modules.

According to the invention, the web guiding elements are to be positioned such that the transfer film web can be guided to at least two mutually different positions on at least two different printing presses.

In this way, you need conveniently only a small number, but at least a foil module and can perform a film transfer to various printing machines. The positioning of the web guiding elements makes it possible to carry out cold foil stamping or another film transfer successively in two different printing presses. For this then only the Guide the film over the appropriate web guide elements are set up.

When using multiple film modules can be done at different times at different printing presses and / or at different positions of these printing machines simultaneously a film transfer. There is a great deal of flexibility in the selection and number of printing machines and / or transfer positions for the film transfer. Instead of the printing presses, it is also possible to provide any other sheet-processing machines which comprise cylinders or rollers which can form a transfer nip for transferring the transfer layer from the transfer film to the printing substrate.

In a further development of the invention, it is provided that the at least one film module is provided on a processing station of the at least one printing press. This may, for example, be a feeder, a jib, a turning device, a printing unit, a coating unit, a stamping unit, an embossing unit or a further processing unit of the printing press. Of course, other processing stations are conceivable on which a film module can be provided. By positioning on such a processing station, a small space requirement for the film module can be achieved.

In an embodiment according to the invention, it is provided that the web guiding elements comprise deflection elements for deflecting the film web from a first movement plane, which runs essentially parallel to the transport path of the printing material, in the direction of the transfer nip for the transfer of the transfer layer to the printing material.

In this way, the film web can be performed over long distances substantially parallel to the substrate. This can preferably be done above the machine, so that the film web poses no threat to the operator. Only in the vicinity of the position on the printing press, where a film transfer is to take place, the film is deflected and fed to the transfer nip. This deflection can preferably take place such that the film is deflected from a substantially horizontal plane of movement into a substantially vertical plane of movement.

In this case, these deflecting elements are arranged or positioned such that a film web running above the printing press can be directed down to this possible transfer gap down to this transfer nip. For example, a potential transfer nip may be provided in each printing and / or coating unit and / or processing unit, then the deflecting elements are provided above these works so that only one suitable deflecting element needs to be selected by a user and the film web can then be adjusted accordingly be set up that it is guided over this deflecting element. Since each factory is assigned such a deflecting element, a flexible device of the device for cold foil stamping or film transfer can take place.

According to the invention, it is provided that the film module is immovable, permanently installed. This allows an orderly workflow with maximum security.

In an embodiment, it is provided that the film module comprises a transfer film collecting roll for winding up a film web guided through the transfer nip. In this way space requirements can be minimized.

In an alternative embodiment it is provided that a transfer film collecting roll is provided at a location different from the position of the film module in the region of the at least one printing press. In a preferred embodiment, it is provided that, as seen in the transport direction of the printed material printed on the printing press, the transfer film collecting roll follows the film module. Conveniently, it can further be provided that a turning device of the printing press lies between the film module and the transfer film collecting roll.

Through this structural separation of film module and transfer film collection roll, the guidance of the film can be adjusted in a simpler manner to the desired position for the film transfer. The guide elements for the route to and from the film to the transfer nip are largely separated and more easily accessible. This not only facilitates the establishment of the printing machine for foil stamping but also maintenance can be performed more easily.

In an advantageous development of the invention, it is provided that the web guiding device has web guiding elements which are positioned such that the transfer film web can be guided from at least two different positions on the at least one printing press to the transfer film collecting roll. As already stated above, the printing press can be set up more flexibly with respect to inline finishing of the printing material by means of a foil embossing, preferably cold foil embossing.

Alternatively, it is provided that the web guide elements are positioned in the region of at least two printing presses such that the transfer film web can be guided by at least two printing presses to the transfer film collecting roll. As already described for the film module, in this way several sheet-processing machines, preferably printing machines, which are located in the same pressroom can be supplied with film by means of at least one common film module and at least one common transfer film collecting roll and this film can also be disposed of again.

In a particularly advantageous embodiment, it is provided that the positions to which the transfer film is guided and from which the transfer film is led away again are locations on the printing presses or the printing press, which correspond to potential potential transfer gaps. That is, here are each rollers or cylinders present, which can be employed on each other and can ensure a transfer from the transfer layer to the substrate. These rollers or cylinders can each be already available in the printing press or provided for this or another purpose roles, or cylinders.

In particular sheet-like printing material such as paper, cardboard, foils, corrugated cardboard or the like can come into question as printing material.

Embodiments from which further inventive features may result, but to which the invention is not limited in scope, are shown in the drawings.

Fig. 1

eine Druckmaschine mit einer variablen Transferfolienführung,

Fig. 2

eine variable Transferfolienführung bei einer Druckmaschine mit Wendung,

Fig. 3a-d

unterschiedliche Varianten der Transferfolienführung bei verschiedenen Positionen eines Folienmoduls,

Fig. 4

ein alternativer Aufbau einer Vorrichtung zum Folientransfer mit voneinander getrennten Transferfolienvorrats- und sammelrollen,

Fig. 5

eine weiterer alternativer Aufbau mit mehreren Druckmaschinen und Folienmodulen in einem Drucksaal.

Show it:

Fig. 1

a printing machine with a variable transfer film guide,

Fig. 2

a variable transfer ribbon guide in a press with turn,

Fig. 3a-d

different variants of the transfer film guide at different positions of a film module,

Fig. 4

an alternative construction of a device for film transfer with separate transfer film supply and collection rolls,

Fig. 5

another alternative construction with several printing presses and film modules in a pressroom.

Fig. 1 1 shows a device 1 for transferring a transfer layer from a carrier film to a printing substrate 5 in a printing machine 2. The transfer layer together with the carrier film forms a transfer film which is provided as a transfer film web 3.

The printing machine 2 has a plurality of printing units 4, 4 ', 4 ". In general, the printing units 4, 4', 4" shown here can also be other processing or further processing units in the printing press 2. For example, it can also be Lackwerke or embossing works here. The printing units 4, 4 ', 4 "can print on a printing substrate 5 with different colors." The printing machine 2 shown here is a four-color printing machine. "It can also be a printing press 2 having one or more printing units 4 Even printing presses 2 with seven or more printing units 4 conceivable, the printing press 2 additionally or alternatively have coating units and / or other further processing stations or plants.

The printing material 5 is passed along a sheet transport path 6 through the printing machine 2. For this purpose, the printing press 2 has a plurality of sheet transfer cylinders 7 and transfer drums 8. The printing material 5 is in the case shown here a sheet 5 made of paper. The sheet 5 is transported within the printing machine 2 by a feeder 9 in the transport direction 10, shown here by the arrow 10 along its transport path 6 to the boom 11.

In the printing units 4 color is transferred to the substrate. The sheet 5 is guided by a printing nip 12, which is formed by a counter-pressure cylinder 14 and a blanket cylinder 13. In this nip 12, the color is transferred from the blanket cylinder 13 to the sheet 5. The printing unit 4 also has a plate cylinder 15. With color and dampening not shown here, the spanned on the plate cylinder 15 printing plate is colored so that color is present only on imaging areas of the printing plate. This color is transferred via the blanket cylinder 13 to the substrate 5. On the blanket cylinder 13 a blanket or blanket is clamped for this process. This rubber or blanket is interchangeable. In the prior art a wide variety of blankets are known. In general, the requirements for the blanket are that it should be able to absorb well ink, and that this color is transferred as far as possible without residue on the substrate.

For transferring the transfer layer from the transfer film 3, the printing material 5 is also passed through a commissioned work 4 '. In this commissioned work 4 'is another printing unit 4' of the printing machine 2. On the plate cylinder 15 'of this printing unit 4' is clamped a printing plate which is imaged so that the pressure plate in the areas in which transfer layer on the sheet 5 to be transferred is to be dyed with adhesive. By means of the ink or dampening unit, not shown, the adhesive is transferred to the plate cylinder 15 'and from there to the blanket cylinder 13' and then to the sheet fifth

The blanket cylinder 13 'and the impression cylinder 14' of the printing unit 4 'are conventional cylinders of the printing press 2. The blanket, i. Of course, the cover of the blanket cylinder 13 'can be selected from the variety of blankets offered.

As the adhesive, an adhesive color or sticky color can be used. An adhesive paint is an adhesive intended for use in a printing unit 4. From bronzing it has been known for decades to use particularly sticky colors to adhere metallizations on the substrate. These colors are substantially equivalent in effect to a colored adhesive which may be used here as well.

The in the commissioned work 4 'with adhesive at least partially acted sheet 5 is then in the following printing unit 4 ". In this printing unit 4", the film transfer takes place.

In this printing unit 4 ", a transfer nip 16 is formed by a blanket cylinder 13" and the impression cylinder 14 "used as the transfer cylinder 12. If no film transfer is carried out in the printing machine 2, this nip is also a printing nip 12 and can be used for ink transfer itself around a conventional printing gap 12.

Through this transfer gap 16, the transfer film web 3 is guided through together with the sheet 5. With pressure and the support of the adhesive, the transfer layer of the transfer film is partially transferred to the sheet where the sheet has been exposed to adhesive.

The transfer film web 3 is guided to transfer the transfer layer onto the sheet 5 from a film module 17 to the transfer nip 16 by means of a film guide device 18 along a film transport path.

For this purpose, the film guiding device 18 comprises different web guiding elements 19, 20 and 21. For a better overview, not all web guiding elements have been marked.

In the film module 17 tension rollers 19 are provided, which ensure a uniform tightening of the transfer film web 3. It can also Sparschaltungseinrichtungen be provided here, which ensure in the course of a savings circuit that essentially only then transfer film is transported through the transfer gap 16, if a transfer of the transfer layer is to take place. Such savings circuits are well known in the art. For a better overview has been dispensed with a corresponding representation.

The transfer film web 3 is unwound from a transfer film supply roll 22, which is provided here in the upper region of the film module 17, this can for example be active, but also a passive unwinding, in which the transfer film web 3 is pulled from the transfer film supply roll 22, is conceivable.

The transfer film web 3 is guided through the tension rollers 19 and fed by deflection rollers 20 to the printing unit 4 "with the transfer nip 16.

There are several pulleys 20 at different positions in the region of the film transport path. By means of an appropriate setting up of the printing machine 2, the transfer film web 3 can optionally be guided via corresponding deflection rollers 20 to different positions of the printing press 2.

In the example shown here, deflection rollers 20 are located in a region of the film transfer path which runs substantially horizontally and thus substantially parallel to the sheet transport path 6. Depending on the desired transfer gap 16 of a printing unit 4 "then the transfer film web 3 is deflected by a deflection roller 20 which is located approximately above the printing unit 4" from the horizontal. In the region of the transfer nip 16, a further deflection roller 20 is then positioned, which guides the transfer film web 3 in the direction of the transfer nip 16. The transfer film web 3 is passed through the transfer nip 16 and passed over a further deflection roller 20 again substantially vertically upwards into an area above the printing machine 2. The two deflection rollers 20 in the region of the transfer gap 16 serve here for stability and for achieving as parallel a passage as possible of the sheet 5 and transfer film web 3 through the transfer nip 16. Of course, it is also possible to dispense with these transfer rollers 20 in the area of the transfer nip 16, the transfer cylinder ie in this case the blanket cylinder 15 "then serves as a further sheet guiding element which passes the transfer film web 3 through the transfer nip 16.

Above the printing units 4 of the printing press 2, the deflection rollers 20 are provided in the area of the different printing units 4. In addition, there are further deflection rollers 20 in the area of the different pressure gaps 12. As a result, the path guidance of the transfer film web 3 can be set up variably to different pressure gaps 12.

Of course, this possible feeding of the transfer film web 3 is also expandable to other positions on the printing machine 2, e.g. In principle, each pair of rollers forming a common gap forms a potential transfer nip 16. Therefore, it can be provided that deflection rollers 20 in the region of the film transport path and in the range of a selection of potential transfer column 16 or in the region of all transfer columns 16 are provided to allow setting up of the printing press 2 so that a film transfer can take place in each of these potential transfer gaps 16. As a further condition for a potential transfer gap, it must only be ensured that a printing material 5 can also be guided through this potential transfer gap 16 together with the transfer film web 3.

Further deflection rollers 21 are provided in the feed direction of the transfer film web 3, behind the transfer gap 16, in order to redirect the transfer film web 3 into a plane which is substantially parallel to the sheet transport path. Like the deflection rollers 20, the deflection rollers 21 are also assigned to the printing units 4, 4 ', 4 "or various potential transfer columns 16 in order to permit guidance of the transfer film web 3 from a selected transfer nip 16 to a transfer film collection roller 23 in a correspondingly configured printing machine 2. In the construction shown here, the transfer film collecting roll 23 forms a functional unit together with the film module 17. The transfer film web 3 can also be guided in the area of the transfer film collecting roll 23 by way of tensioning rollers 19 or an economy circuit device not shown here.

Overall, the provision of Deflection rollers 20 and 21 allows a variable transfer sheet guide to different positions on the printing machine 2. The different positions are preferably potential transfer columns 16, which are formed by pressure gaps 12, for example. But other cylinder pairings are conceivable here as transfer columns 16.

In the printing machine 2 shown here, the film module 17 is located on the first printing unit 4 that the investor 9 follows. Since this printing unit 4 has only one nip 12 in this case, this nip 12 can not serve as a transfer nip 16, since it would then be missing at a commissioned work for the adhesive. Therefore, no pulleys 20, 21 are shown in this case, which can lead the film in the printing nip 12. However, it is also conceivable that in this printing unit 4, an application device for the adhesive is provided, which is located in front of the transfer nip 12. With this applicator, not shown here, the adhesive could then be transferred to a sheet from the feeder 9 and in the same printing unit 4 could still be a film transfer. For this case, then the first, the investor 9 following printing unit 4 would be a printing unit 4 with a potential transfer nip 16 and then pulleys 20 can be provided accordingly to allow a guide the Transferfoliebahn 3 to this potential transfer gap 16.

In the FIG. 2 an alternative construction of the transfer device 1 is shown. Essentially, it is a similar structure as in Fig. 1 shown. Like elements are identified by like reference numerals.

Due to the different deflection rollers 20, 21 different positions on the printing machine 2 for a film transfer can be selected. In particular, the transfer ribbon supply roll 22 may be provided with the foil module 17 at the beginning of the sheet transport path.

The printing machine 2 shown here comprises a turning cylinder 24, whereby a printing of the sheet 5 in perfecting is possible.

The printing machine 2 shown here is, by way of example only, a printing press with 2 printing units 4 in front of and behind the turning cylinder 24, since e.g. a printing machine 2 with 8 printing units 4, four before and four behind the turn would be worse represent.

The film module 17 is located as well as in FIG. 1 represented on the first printing unit 4. About the pulleys 20, 21, the transfer film web 3 can be guided to the individual potential transfer columns 16. These are formed by the pressure column 12 of the printing units 4.

For example, the film transfer may take place at the last printing unit 4 of the printing machine 2, as shown here. In particular, this printing unit 4 is then downstream of the turning cylinder 24.

Thus, in the printing units 4 before the turning cylinder, a conventional print job done on a sheet 5. In the case shown here, that would be a two-color print. In a printing machine 2 with four printing units 4 in front of the turning cylinder 24, a conventional four-color printing can be done before the sheets are turned.

On the counterpressure side of the sheet 5, a coating of the sheet with the transfer layer can take place. This is followed first by a printing unit 4 'working as a commissioned work and then by the printing unit 4 "in which the film transfer takes place For a greeting card, one side of the card can be conventionally printed and then a metal layer can be applied to the other side Either this layer can be transferred in regions or a full-surface lamination can take place If the printing machine has printing units 4 "behind the printing unit 4" in which the film transfer takes place, a corresponding further imaging of the sheet 5 can take place.

Furthermore, it is also possible for the printing to be subsequently imaged, the printing material 5 first being coated with transfer film and subsequently printed again. The limits for these different orders of coating and printing are limited solely by the number of processing stations or printing units 4 of the printing machine 2. By way of the web guiding elements 19, 20, 21, at least each potential transfer nip 16, be it in front of or behind another printing unit 4 or in front of or behind a turning cylinder 24, can actually be used as a transfer nip 16.

In the Fig. 3a to 3d sketchy different guides for the transfer film web 3 are shown. The film module 17 can be provided at different positions on or also next to the printing machine 2. The positions for the film transfer can also be provided at different positions / printing units 4 of the printing machine 2. The number of printing units 4 is only to be understood symbolically and is adapted to the space for the drawing. In principle, more or fewer printing units 4 or also coating units can be provided.

In Fig. 3a an embodiment is shown in which the film module 17 is provided on the feeder 9 of the printing machine 2. The film module 17 here also comprises a transfer film collecting roll 23. As web guide elements 19, 20, 21, only the deflecting rollers 20, 21 are shown here, which enable the transfer film 3 to be guided to the transfer gap 16 from the horizontal plane and back again. Further web guide elements 19, 20, 21 can be provided, are here and in the other alternative embodiments of the FIGS. 3b-d For the sake of clarity not shown in particular are only pulleys 20, 21 dargstellt that are used actively in the established printing machine 2.

As a printing unit 4 for film transfer is at FIG. 3a the first printing unit 4 is provided directly following the feeder 9. This is only possible if an adhesive application takes place before the film transfer on the sheet 5. As described, this is possible, for example, by an application device on the impression cylinder 14 in front of the transfer nip 16.

The Fig. 3b shows an alternative embodiment with the film module 17 on the feeder 9. The guide of the transfer film 3 is carried out as already for Fig. 3a described.

The deflection rollers 20, 21 which are used here are positioned above the third printing unit 4 "downstream of the feeder 9. Other deflection rollers in the area of the remaining printing units 4 are, as described, not shown here.

In the embodiment shown here, the adhesive application in the second printing unit 4 'can take place after the feeder 9.

The film module 17 is in accordance with the embodiment Fig. 3c on the boom 11. The printing press is set up such that the deflection rollers 20, 21 guide the transfer film 3 to the transfer nip 16 and back to the transfer film collection roll 17 via the second printing unit 4. Here, the transfer film web 3 is guided in the supply to the transfer nip 16 opposite to the direction of movement of the sheet 5.

In the Fig. 3d FIG. 2 shows an example of a structure of the transfer device 1 in which the film module 17 is not positioned on or on but next to the printing machine 2.

The transfer film 3 is first transported in a direction perpendicular to the direction of movement of the sheet 5. By deflection rollers 25, the direction of movement 26 of the transfer film 3 is deflected by about 90 ° in the plane, so that the transfer film web 3 is now moved parallel to the transport path of the sheet 5. The deflection rollers 25 may be, for example, crosswise to each other and at a 45 ° angle to the film web arranged deflection rollers 25, which allow a 90 ° deflection substantially in one plane.

After the deflection, the direction of movement of the transfer film web 3 is opposite to the direction of movement of the sheets 5. The transfer film web 3 is fed to further deflection rollers 20 in the area of a printing unit 4 "and then returned to the film collection roller 23 of the film module 17 again by corresponding deflection rollers 21, 25.

The FIG. 4 FIG. 2 shows an alternative embodiment of the film transfer device 1 with a transfer film collection roll 23 spatially separated from the film module 17. The film module 17 is located on the first printing unit 4 downstream of the feeder 9, while the transfer film collection roll 23 is located on the last printing unit 4 in front of the delivery device 11. About deflection rollers 20, the transfer sheet 3 each printing unit 4 and thus each potential transfer gap 16, ie the printing gaps 12 are supplied. From these potential transfer columns 16, or printing gaps 12, the transfer film web 3 can be fed to the transfer film collection roller 23. Tension rollers 19 or economy circuit devices can also be provided in each case in the region of the film module 17 and / or the transfer film collecting roll 23, but are not shown here.

A device of the printing machine 2, so that at each potential transfer gap 16, at least on a selection of different printing columns 12, a film transfer can take place, is easily possible by guiding the transfer film web 3 via the corresponding guide rollers 20 and 21. In the illustrated case, the printing machine 2 is set up such that a film transfer takes place in the third printing unit 4 "downstream of the feeder 9. The deflection rollers 20, 21 in the area of the printing gaps 12 can be provided either inside the printing unit housing or outside the housing In the case illustrated here, a turning cylinder 24 is also located between the film module 17 and the transfer film collecting roll 23.

Fig. 5 shows another alternative guidance of the transfer film 3. As in Fig. 1 described is the film module 17 to the first printing unit 4 of the printing machine 2. A fixed positioning at another location is of course also possible. As shown in the previous drawings, the transfer film web 3 can be guided via deflection rollers 20, 21 to different printing gaps 12. These different leadership opportunities with the corresponding pulleys 20, 21 are not shown here for the sake of clarity. Instead, a possible further guidance to another potential transfer gap 16 is shown, for which the printing machine 2 is shown here appropriately set up.

The further potential transfer gap 16 may be formed by a sheet transfer cylinder 7 and an extra attached further film transfer cylinder 27. This film transfer cylinder 27 can be provided solely for this purpose within the printing machine 2 and, if the space is available, be accommodated directly in a tread area 28 of the printing machine 2. If space is insufficient, the film transfer cylinder 27 is accommodated in an extended tread area 29, as shown. The transfer film web 3 can be guided to the transfer nip 16 outside the individual adjacent printing units 4 'and 4 or, not shown here, within these printing units 4, 4' about the deflection rollers 20 to the transfer nip 16. The upstream printing unit 4 'is here converted in such a way that, as described, it applies an imaging adhesive to the sheets 5.

In the Fig. 6 schematically a pressure chamber with three printing machines 2a, 2b and 2c is shown. Each of these printing presses 2a, 2b and 2c may include the described potential transfer columns 16, either of Pressure columns 12, in coating units or by a transfer cylinder 27 and a sheet transfer cylinder 8 are formed.

In addition, two film modules 17a and 17b are located in the printing space, with the film module 17a unwinding two partial film webs 30a and 30b. These sub-film webs 30a, 30b can be provided on two transfer film supply rolls 22 or on a single transfer film supply roll 22. Only one transfer film web 3 is unwound from the film module 17c and fed to the printing machine 2c.

As a result of the variable guidance for transfer film 3, the different webs 3, 30a, 30b can be supplied substantially independently of different printing units 4 ", or different potential transfer columns 16 of the various printing presses 2a, 2b, 2c.

The film modules 17a, 17b are placed in the pressure space in the area of the feeders 9 of the printing presses 2a, 2b, 2c. Via different deflection rollers 25a, 25b and 25c, 25d, the different transfer film webs 3, 30a, 30b are guided to the printing machines 2a, 2b and 2c. The deflection rollers 25a and 25b are designed in size for normal width transfer film webs 3 and are designed in different directions relative to each other. The deflection rollers 25c and 25c, on the other hand, are designed for the narrower partial film webs 30a and 30b, they can be exchanged for deflection rollers 25a and 25b in order to allow a guide for normally wide transfer film webs 3 here as well.

The different transfer film webs 3, 30a, 30b are first guided above the deflection rollers 25a-25d above the printing machines 2a-2c and finally transfer film collecting rollers 23a, 23b in the region of the delivery arms 11a to 2c. Above the printing presses 2a-2c, the transfer film webs 3, 30a, 30b are guided substantially parallel to the transport path 6 of the printing substrates 5 in the printing presses 2a-2c. The webs 3, 30a, 30b are then fed via deflection rollers 20, 21 to different printing units 4 ", whose printing gaps 12 act as transfer gaps 16. The upstream printing units 4 'meanwhile serve as commissioned units for the adhesive and / or the transferred transfer layer on the sheet 5. The number of printing units 4 is illustrated here only three for the printing machines 2a to 2c, usually several printing units 4 can be provided, in particular different numbers of printing units 4 for the different printing machines An application of printing ink can then take place before and / or after the film transfer by printing units 4. At least one printing unit 4 'in front of a transfer nip 16 should be designed as a commissioned work for the adhesive application.

The pulleys 20, 21 are provided above each potential transfer nip 16 to facilitate a variable transfer sheet guide in a simple manner. For reasons of clarity, only the guide rollers 20, 21 provided for the actual guide are shown here in each case.

By means of this device of a printing machine 2 and / or a printing space with different deflection rollers 20, 21 and 25a to 25d or only parts thereof, a very variable guidance of the transfer film web 3 is made possible. For different print jobs, only the corresponding printing machine 2 needs to be selected and set up, the transfer film is then guided through the appropriately selected web guiding elements to the desired transfer nip 16. A repositioning of a film module 17 and / or a transfer film collecting roll 23 is no longer necessary. In particular, various film modules 17 may be provided in a print room having different types of transfer ribbon with e.g. provide different colorations and / or different widths. From these different film modules 17, the webs 3, 30a, 30b of the different types of transfer film 3 can then be guided to the presses 2 just required, or their transfer nips 16.

LIST OF REFERENCE NUMBERS

1

contraption

2

press

3

Transfer sheet

4, 4 ', 4 "

printing unit

5

substrate

6

transport path

7

Sheet transfer cylinder

8th

transfer drum

9

investor

10

transport direction

11

investor

10

transport direction

11

boom

12

nip

13, 13 '

Blanket cylinder

14, 14 '

Impression cylinder

15, 15 ', 15 "

plate cylinder

16

transfer nip

17

foil module

18

Film guide device

19

tensioners

20

guide rollers

21

guide rollers

22

Transfer film supply roll

23

Transfer film collecting roller

24

turning cylinder

25

guide rollers

26

movement direction

27

Foil transfer cylinder

28

passage region

29

extended tread area

30a, 30b

Part sheet

Claims (13)

1. Device for transferring a transfer layer from a carrier film to a printing material, the carrier film and the transfer layer together forming a transfer film, the device comprising at least one printing machine for imaging the printing material,
   at least one stationary film module with at least one transfer film supply reel for supplying and unwinding at least one web of transfer film,
   a transfer film guide device at least for guiding the web of transfer film from the film supply reel to a transfer nip along a film transport path, the transfer nip being formed by an impression cylinder and a film transfer cylinder for transferring the transfer layer to the printing material, for the purpose of which the printing material is guided along a printing material transport path, and
   a transfer film collecting reel for winding up the web of transfer film guided through the transfer nip,
   characterized by
   the fact that at least in the region of the at least one printing machine (2), the guide device includes web guiding elements (19, 20, 21) suitable for guiding the web of transfer film (3) selectively to different positions on the at least one printing machine (2), the different positions each being provided in different printing units and/or varnishing units and/or processing units, and by
   the fact that the possible positions on the printing machine or printing machines (2, 2a, 2b, 2c) are each assigned to possible potential transfer nips (16).
2. Device according to Claim 1,
   characterized by
   the fact that the web guiding elements (19, 20, 21) are positioned in the region of the at least one printing machine (2) in such a way that they can guide the web of transfer film (3) from the film module (17) to at least two different positions on the printing machine (2).
3. Device according to one of Claims 1 or 2,
   characterized by
   the fact that the at least one film module (17) is provided in a printing machine room which houses the at least one printing machine (2),
   that at least one second sheet-processing machine, preferably a printing machine (2a, 2b, 2c) is provided in this printing machine room, and
   that the web guiding elements (19, 20, 21) are positioned in such a way that the web of transfer film (3) can be guided to at least two different positions on at least two different sheet-processing machines or printing machines (2a, 2b, 2c), respectively.
4. Device according to one of Claims 1 or 2,
   characterized by
   the fact that the film module (17) is provided on a processing station of the at least one printing machine (2).
5. Device according to Claim 4,
   characterized by
   the fact that the processing station is either a feeder (9), a delivery (11), a turning device, a printing unit (4, 4', 4"), a varnishing unit, a diecutting unit, an embossing unit, or a further processing unit of the printing machine (2).
6. Device according to at least one of Claim 1 to 5,
   characterized by
   the fact that the web guiding elements (19, 20, 21) comprise deflecting elements (20) for deflecting the web of film (3) from a first plane of movement essentially parallel with the transport path (6) of the printing material in the direction towards the transfer nip (16) for transferring the transfer layer to the printing material (5).
7. Device according to one of Claims 1 to 6,
   characterized by
   the fact that the film module (17) comprises a transfer film collection reel (23) for winding up a web of transfer film (3) guided through the transfer nip (16).
8. Device according to one of Claims 1 to 6,
   characterized by
   the fact that at least one transfer film collecting reel (23) is provided in a location different from the position of the film module (17) in the region of the at least one printing machine (2).
9. Device according to Claim 8,
   characterized by
   the fact that the transfer film collecting reel (23) follows the film module (17) as viewed in the direction of the printing material (5) printed in the printing machine (2).
10. Device according to one of Claims 8 or 9,
    characterized by
    the fact that between the film module (17) and the transfer film collecting reel (23) a turning device of the printing machine (2) is provided.
11. Device according to one of Claims 7 to 10,
    characterized by
    the fact that a film guiding device is provided which includes web guiding elements (19, 20, 21) arranged at least in the region of the at least one printing machine (2) and positioned in such a way that the web of transfer film (3) can be guided from at least two different positions on the at least one printing machine (2) to the at least one transfer film collecting reel (23).
12. Device according to one of Claims 7 to 10,
    characterized by
    the fact that a film guiding device is provided which includes web guiding elements (19, 20, 21) arranged in the region of at least two printing machines (2a, 2b, 2c) and positioned in such a way that the web of transfer film (3) can be guided from at last two different positions on the at least two printing machines (2a, 2b, 2c) to the transfer film collecting reel (23).
13. Device according to one of the preceding claims,
    characterized by
    the fact that the printing material (5) is a sheet-shaped printing material (5).

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