EP2308681B1 - Format-variable apparatus for cutting printed products as well as folding apparatus and printing press with such apparatus - Google Patents

Description

The present invention relates to a variable-format device for cutting printing materials, in particular for use in a variable-format cutting and folding apparatus or designed as a variable-format cutting and folding apparatus, in particular for use in a variable-format printing press, in particular such a web-fed printing press.

Web printing machines are basically known from the prior art, for example from standard textbooks on web offset printing. For example, from Wolfgang Walenski, Der Rollenoffsetdruck, 1995, pp. 90 - 95, web printing machines for illustration printing and newspaper printing are known, and from pages 98 - 103, for example, web printing machines for book printing are known. Such web printing machines are also known from Helmut Teschner, Offsetdrucktechnik, 1997, pp. 10/25 - 10/28 and web printing machines for book printing are known from Teschner pp. 10/76 - 10/82.

Web printing machines are also used for book printing DE 40 30 863 A1 known, where a web-fed rotary printing machine is described which has two successive longitudinal folding devices with two folding formers, the first longitudinal folding device being arranged rotated by 90 ° relative to the second.

The above-mentioned web printing machines are all designed as rotary printing machines, so they use rotating printing cylinders in the form of plate cylinders that carry printing plates and in the form of transfer cylinders or rubber cylinders that transfer the printing ink from the plate cylinder to the paper web to apply printing ink to a paper web. Helmut Teschner, Offset Printing Technology, 1997, p. 10/76 already addresses the problem of process engineering Disadvantages due to fixed cylinder circumferences are pointed out, but web offset printing machines are still used there, i.e. web printing machines that have rotating printing cylinders.

According to the state of the art, printing units and also folders with a fixed cylinder circumference and thus a fixed printing section or printing format are used in web printing machines, in particular in letterpress web machines. Since the plate cylinders and transfer cylinders or blanket cylinders have a fixed, defined circumference, the associated folders are also set up for these fixed circumferences and thus fixed print formats. This means that the print formats and printed products that can be produced are always the same throughout the entire lifespan of the web printing machine, determined by the fixed circumferences of the cylinders. However, such fixed formats cannot be used economically and/or technically optimized, especially for small runs (e.g. less than 1000 pieces) and very small runs (e.g. less than 100 pieces). The manufacturing costs of printing plates and the set-up time when changing printing plates also have a much greater percentage impact on the manufacturing costs of the printed products for smaller runs than for printed products that are always printed in the same print format in large runs (e.g. thousands of copies). The same can also apply to newspaper printing and illustration printing with short runs and very small runs, especially for contract printing companies that have to provide constantly changing print products on behalf of a large number of customers and publishers.

The requirements for printing changing formats, such as in letterpress printing and such as for small runs (e.g. smaller than 1000 pieces) and very small runs (e.g. smaller than 100 pieces up to lot size = 1 i.e. "print on demand") are therefore consistent with those previously Web printing machines known from the state of the art cannot be solved in an economically and/or technically optimized manner.

Out of DE 100 30 055 A1 as well as from DE 102 13 978 A1 Methods and devices for cutting printing materials are known, with the cutting knife cylinder at the time of cutting at the web speed of the printing material path is accelerated. However, there are no management devices or anything similar provided there.

From the DE 41 20 628 A1 and the WO 97/24284 A2 Devices for cutting paper webs with a cutting module are known, which contain a cutting device, the respective cutting module having guide devices which have a plurality of guide areas for guiding the paper web through the cutting module.

The object of the present invention is to provide an improved device for cutting paper webs or a folder. This task is solved by the features of patent claims 1 - 4.

Embodiments of the invention are described below. These embodiments can be provided individually or in combination with any further embodiment of the invention, i.e. in principle all suitable combinations of the technical features described below are possible with one another to further develop the invention. One possibility of combining the technical features to design the objects of the invention is represented by the dependent patent claims.

Precisely due to the possibility of simultaneously maintaining a web printing machine or equipment (including control and folder) for web printing, i.e. printing from a rolled-up and therefore practically "infinite" paper web, in conjunction with the technical features of the invention as described below for the Objects of the invention and their refinements can be guaranteed that a wide variety of print formats can be printed and/or processed in an economically and/or technically optimized manner.

A variable-format printing press, in particular a web-fed printing press, has printing units having printing devices or groups of printing devices for applying printing ink to a printing material or a paper web. It can be provided that the printing devices or groups of printing devices are all designed to be free of rotating printing cylinders. The printing units for applying printing ink can also be suitable for applying any other type of liquid substance
a paper web is to be applied, such as varnish, liquid glue, dampening solution or other printing inks such as toner-based printing inks or similar. Because there is no need for a rotating printing cylinder, the device can free itself from the constraint of fixed cylinder circumferences, which always limit printing formats to fractions of the cylinder circumference (1, ½, 1/3, ¼, etc.). The printing material and in particular the paper web on a roll does not have this restriction, since it has a practically "infinite" extent - limited only by the web width of the printing material or the paper web - and allows the printing of any format size. By dispensing with a rotating printing cylinder, a format-variable printing machine, in particular a format-variable web printing machine, is made possible, which can print a wide variety of printing formats. The print formats of a printed image or a printed page can be determined in particular by the length (extension in the running direction of the printing material or the paper web) and/or the width (extension in the direction transverse to the paper web), but also by the orientation (distance of the printed image from the edge of the paper web, distances between the printed images, angle between the longitudinal edge of the printed image and the direction of travel of the printing material or the paper web) on the printing material or the paper web.

The printing devices or groups of printing devices can be designed for the contactless application of printing ink to the printing material or the paper web. These can be designed in particular as a device for dripping or spraying printing ink with the aid of a drip device or nozzle device, for example in the form of an inkjet device. This avoids direct contact between the printing material or paper web and printing devices and enables variable-format application of printing ink to the printing material or paper web. The printing devices or groups of printing devices can also be designed for the contactless application of toner-based printing ink to the printing material or the paper web.

There can also be a control device for controlling and/or regulating the printing devices or groups of printing devices and for controlling and/or control of an actuating device of at least one cutting device for cutting at least part of the printing material or the paper web, the control of the actuating device taking place as a function of print format settings for the printing devices or groups of printing devices. This configuration of the control device in combination with an object of the invention - and possibly its further configurations as described here - results in a particularly favorable synergy, especially for a format-variable printing process. Precisely the use of knowledge of the print format settings for the printing devices or groups of printing devices to control an actuating device of at least one cutting device in a - in particular common - control device ensures optimal and print format-compliant adaptation of the entire printing and processing process.

If the description of the invention talks about controlling a device, it is always possible to regulate this device in the sense of the invention. Conversely, if the description of the invention mentions control of a device, control of this device in the sense of the invention is always possible.

Reference is also often made below to the running direction L of the printing material or the paper web. The running direction of the printing material or the paper web in the sense of this invention does not define a global fixed plane in space, because the printing material or the paper web undergoes several changes of direction and possibly also wraps, as the figures clearly show. However, a person skilled in the art can determine a clear spatial direction from the local running direction of the paper web locally - i.e. for each web section of the printing material or the paper web.

It can be provided that the control device is designed to control and/or regulate a motor actuating device of a cutting device with cutting knives. The motor actuating device can be designed, for example, as a drive motor or servomotor.

It can also be provided that the control device is designed to control and/or regulate the actuating device as a function of pre-stored or pre-calculated control curves. These control curves can define a local and/or temporal course for the operating state of the actuating device, i.e. the operating state or operating parameters (such as pressure, intensity, force, speed, spatial position, clock frequency) of the actuating device can be determined locally or temporally with the help these control curves can be changed.

The cutting device is designed as a rotating cutting device and the control device for controlling and/or regulating the actuating device is designed such that the cutting device can be operated with varying angular speed per revolution.

According to the invention it is provided that when a cutting knife comes into contact with a printing material or a paper web, the angular velocity (or the tangential component of the rotational speed in the running direction of the printing material or the paper web) of the cutting knife is equal to the conveying speed of the printing material or the paper web. The rotational speed is therefore adjusted per revolution of the rotating cutting device so that, at least when there is contact between the cutting knife and the paper web, both are at the same speed, so that there is no relative speed between the two at the contact point. This prevents the printing material or paper web from tearing or picking.

It can also be provided that the printing devices or groups of printing devices have a nozzle device for spraying printing ink onto a printing material or a paper web, for example in the form of an inkjet device or that this has a toner device for applying toner-based printing ink have a printing material or a paper web.

It can also be provided that printing devices or groups of printing devices or web guide elements adjacent to the printing devices are mounted displaceably perpendicular to the web plane for guiding the printing material or the paper web. This can be used in particular for the relative alignment of the printing devices or groups of printing devices or the web guiding elements to one another and/or relative to the printing material or to the paper web.

It can also be provided that printing devices or groups of printing devices or web guide elements adjacent to the printing devices for guiding the printing material or the paper web can be displaced perpendicularly to the web plane in a controlled or regulated manner by a control device in such a way that a predefined distance between the printing material or the paper web and the printing equipment is adhered to. This may be necessary in particular for printing devices that have a nozzle device.

It can also be provided that several printing devices or groups of printing devices are arranged one behind the other in the running direction of the printing material or the paper web. This can be used, for example, to print several colors one after the other.

It can also be provided that the individual printing devices of a group of printing devices are each designed to apply different printing inks. In principle, it can therefore be provided that printing devices only print the printing material or the paper web with a single printing ink. However, it can also be provided that printing devices are provided for printing different printing colors, with certain printing devices for printing different printing colors being combined into a group. These groups are characterized, for example, by a similar spatial arrangement or a common control.

It can also be provided that at least one dryer is provided, which is arranged downstream of at least one of the printing units in the running direction of the printing material or the paper web. This makes so-called heatset production possible in particular.

It can also be provided that the dryer is structurally integrated into a printing unit. This enables a particularly compact structural or spatial design of the printing unit and dryer.

It can also be provided that the dryer is structurally or spatially integrated into a printing unit in such a way that the dryer operation does not influence the printing devices. This takes into account that the dryer can cause interference such as heat radiation, vibrations, electromagnetic fields or the like, which can influence the function of the printing devices. This configuration prevents the dryer from having a disruptive influence on the printing devices, for example through suitable spatial separation or distances, a suitable relative spatial arrangement of the dryer and printing devices to one another or through suitable shielding.

In principle, the dryer can be arranged, for example, below the printing devices. Depending on the type and design of the dryer, there could be a risk that the heat generated rises and heats up the printing devices in an undesirable manner. It can therefore be provided that the dryer is arranged spatially above the printing devices of a printing unit.

A folding apparatus can also be provided, which is arranged downstream of the printing units and which can have several folding devices arranged in a row or parallel to one another in the running direction of the printing material or the paper web. This configuration of the folding apparatus in combination with an object of the invention - and possibly its further configurations as described so far - results in a particularly favorable synergy, especially for a variable-format printing process. Through the two folding devices exist Great freedom for product design and product processing of printed products, especially for format-variable printing processes.

It can also be provided that the arrangement of the folding devices and the web guidance of the printing material or the paper web in the folding apparatus are set up in such a way that the fold lines already mentioned above each define the fold of the printing material or the paper web by one of the folding devices. In particular, it can be achieved that unprinted or overprinted areas of the printing material or the paper web are aligned precisely in such a way that they are placed on a fold of the printed products and are therefore not disturbingly noticeable in the finished printed product.

It can also be provided that one or each folding device is displaceable in at least one spatial direction, the first folding device being displaceable in a first spatial direction and the second folding device being displaceable in a spatial direction perpendicular thereto. The state of the art DE 40 30 863 A1 On the other hand, only one of two folding formers can be moved, the other folding former is fixed. The design described here thus offers improved freedom in the alignment and adaptation of the folding devices to a wide variety of print formats and widths as well as guides of the printing material or to paper web widths or paper web guides. This ensures in particular that the post-processing device (cutting devices, web or sheet guides, grippers, etc.) downstream in the running direction of the printing material or the paper web is not or only barely adapted to changed print formats and widths as well as guides of the printing material or paper web widths or paper web guides (e.g. spatially shifted). Rather, this can be achieved via the displaceability of the folding devices.

It can also be provided that at least one folding device can also be displaced in the second or in a third spatial direction, which is perpendicular to the first spatial direction. This variability of the folding device further improves the alignment and adjustment of the folding devices to a wide variety of print formats and widths as well as guides of the printing material or paper web widths or paper web guides. For example, a symmetrical or asymmetrical web guidance of the printing material or the paper web by the printing devices with simultaneous variability of the web widths and printing formats can be compensated for by the two-axis displaceability, ensuring that the post-processing device (cutting devices) downstream in the running direction of the printing material or the paper web , web or sheet guides, grippers, etc.) do not have to be adapted (e.g. spatially shifted) to changed print formats and widths as well as guides of the printing material or paper web widths or paper web guides.

It can also be provided that the folding apparatus has a sheet or paper sheet transport element with a drive, the drive being regulated by the control device or a separate control device in such a way that sheets or sheets separated from the printing material or the paper web are produced by the cutting device .Paper sheets are accelerated away from the remaining printing material or the remaining paper web in the running direction of the printing material or the paper web. This ensures in particular that paper sheets separated from the printing material or the paper web are spatially separated by a defined amount from the remaining printing material or the remaining paper web or subsequent separated paper sheets after the cutting device. This makes it easier for these sheets or sheets of paper to be recorded and/or processed separately in the post-processing device.

It can also be provided that a device with a drive is arranged downstream of the sheet or paper sheet transport element, the drive being regulated by the control device or a separate control device in such a way that the transport movement of the previously accelerated sheets or paper sheets is slowed down . This can in particular ensure that separate sheets or sheets of paper are collected in order to produce multi-layered products, for example.

It can also be provided that the aforementioned device is designed in such a way that, in addition to slowing down, at least some of the sheets or sheets of paper are raised or lowered to scale up the sheets or sheets of paper. Such raising or lowering of at least some of the sheets or sheets of paper, for example the front edge or trailing edge (seen in the running direction of the printing material or the paper web), makes it easier for the sheets or sheets of paper to pile up, since subsequent sheets or sheets of paper are then raised above or beyond be routed under previous sheets or sheets of paper.

• eine Bahnwendeeinrichtung , die den Druckeinheiten nachgeordnet ist und mehrere Längsschneideinrichtungen zum Aufteilen des Bedrucksstoffs bzw. der Papierbahn in Teilbahnen aufweist, sowie
• eine falztrichterlose Nachverarbeitungseinrichtung, die ein Schneidmodul zum Abtrennen von Bögen Papierbögen des verbleibenden Bedrucksstoffs bzw. von der verbleibenden Papierbahn und ein Auslagemodul zum Sammeln und/oder Auslegen und/oder Aufschuppen der Bögen bzw. Papierbögen aufweist.

It can also be provided:

• a web turning device, which is arranged downstream of the printing units and has several longitudinal cutting devices for dividing the printing material or the paper web into partial webs, and
• a hopper-less post-processing device, which has a cutting module for separating sheets of paper from the remaining printing material or from the remaining paper web and a delivery module for collecting and / or laying out and / or stacking the sheets or sheets of paper.

In this embodiment, a folding former - and possibly also other folding devices - can be dispensed with, since the required product width is achieved by separating the printing material or the paper web into partial webs and the required product length is achieved by the cutting module for separating sheets or Sheets of paper are produced. In the subsequent delivery module, the sheets or sheets of paper produced in this way can be collected, stacked and/or laid out to form products. This makes it possible for the printing units shown above to interact very easily with a web turning device and a post-processing device.

A variable-format printing machine, in particular a variable-format web-fed printing machine, can be provided, such as a letterpress web-fed press, a variable-format newspaper-fed web press or a variable-format illustration web-fed press, which in particular can be designed or further developed according to one or more of the previously described technical features, comprising printing devices such as inkjet or toner printing devices or groups of inkjet or toner printing devices and a control device for controlling and / or regulating the printing devices or groups of printing devices and for controlling and / or regulating an actuating device of at least one cutting device, the control of the Actuating device takes place depending on print format settings for the printing devices or groups of printing devices. Inkjet or toner printing devices are a realization of printing devices, all of which are designed without rotating printing cylinders and at the same time of printing devices or groups of printing devices for the contactless application of printing ink to the printing material or the paper web. The design of the control device described here for controlling the printing devices or groups of printing devices and for controlling an actuating device of at least one cutting device results in a particularly favorable synergy, in particular for a format-variable printing process. Precisely the use of knowledge of the print format settings for the printing devices or groups of printing devices to control an actuating device of at least one cutting device in a - in particular common - control device ensures optimal and print format-compliant adaptation of the entire printing and processing process. Variable format roll machine in the sense of the invention means that the print format settings of printed pages and/or printed images on the printing material or the paper web - in particular regarding length (extension in the running direction of the printing material or the paper web) and/or width (extension in the direction transverse to the printing material or to the paper web) and/or alignment (distance of the printed image from the edge of the printing material or the paper web, distances between the printed images, angle between the longitudinal edge of the printed image and the running direction of the printing material or the paper web - can be varied within wide ranges , essentially only limited by the width of the printing material or the paper web used.

A folding apparatus can also be provided, in particular for use with a web press and/or a control device according to one or more of the technical features as previously described. In one embodiment of the invention, an actuating device of a rotating cutting device can be controlled by a control device in such a way that the cutting device can be operated with varying angular speed per revolution. It can also be provided that when a cutting knife comes into contact with the printing material or the paper web, the angular velocity is equal to the conveying speed of the printing material or the paper web. So the rotational speed is adjusted per revolution of the rotating cutting device so that at least when there is contact between the cutting knife and the paper web, both are equally fast, so that there is no relative speed between the two at the contact point. This prevents tearing or picking.

In the following, the above-mentioned technical features or features of the figures with the associated description of the figures will be taken up again and, if necessary, further developed.

A device for cutting paper webs can be provided with a cutting module which includes a cutting device, the cutting module having guide devices which have at least a partially flat and/or movable guide area for guiding the paper web through the cutting module.

A device for cutting printing materials can also be provided with a cutting module which includes a cutting device, the cutting module having guide devices which have at least a partially flat and/or movable guide area for guiding the printing material through the cutting module.

In an aforementioned device it can be provided that a guide device encloses a cutting element of a cutting device. Alternatively and/or additionally it can also be provided that at least one guide device has movable guide elements with a printing material, in particular with a paper web. The guide elements can therefore be designed in such a way that they move together with a printing material or with a paper web, at least in the guide area in the running direction of the printing material or the paper web, in particular at the same speed at which the printing material or the paper web moves in Moving direction of the printing material or the paper web moves. This speed can also be determined by the movement of the guide elements in the guide areas, for example by actively driven guide elements. Alternatively and/or additionally, it can also be provided that the cutting element for cutting a printing material, in particular for cutting a paper web, is designed only in those partial areas of a printing material or a paper web in which a guide device does not come into contact with the printing material or a paper web has. This means that a cut or partial cut is only created by the cutting element in those areas of a printing material or a paper web in which a guide device has no contact with the printing material or a paper web. For example, a perforation of a printing material or a paper web can be created, or a first partial cut of a printing material or a paper web, which is later expanded or supplemented into a complete cut (separating cut) of a printing material or a paper web.

It can be provided that at least one guide device is designed as a strip line. Alternatively and/or additionally, it can be provided that in the running direction of the printing material, in particular a paper web, a plurality of cutting elements arranged one behind the other are provided, which are designed for cutting a printing material or a paper web in partial areas of a printing material, in particular a paper web, which are transverse to the running direction of the printing material or a paper web are offset from one another. Each of the cutting elements can be designed so that it only produces a cut or partial cut in those areas of a printing material, in particular a paper web, in which a guide device does not come into contact with the printing material or to a paper web. For example, each of the cutting elements can be used to create a perforation of a printing material or a paper web, or a first partial cut of a printing material or a paper web can be created by a first cutting element, which is then made into a complete cut of a printing material or a paper web by a second cutting element or further cutting elements. a paper web is expanded or supplemented. The cutting elements as a whole do not have to be offset from one another; it is sufficient if the elements of the cutting elements required for the cut, such as blades or blade sections of a blade that is interrupted transversely to the direction of travel, are offset from one another.

The invention thus allows a shape-variable cut while at the same time improving guidance of the printing material, in particular a paper web.

A folding apparatus with an aforementioned device can be provided, the folding apparatus having a plurality of folding devices arranged in series or parallel to one another in the running direction of a printing material, in particular a paper web. This folder can be designed according to one or more features as described in this document.

It can be provided that each folding device is displaceable in at least one spatial direction, the first folding device being displaceable in a first spatial direction and the second folding device being displaceable in a spatial direction perpendicular thereto. Alternatively and/or additionally, it can be provided that at least one folding device can also be displaced in the second or in a third spatial direction, which is perpendicular to the first spatial direction.

A format-variable printing press, in particular a web printing press, can also be provided with a device with one or more of the aforementioned technical features. In particular, it can be provided that a control device for controlling and / or regulating the printing devices and for controlling and / or regulating an actuating device at least one Cutting device for cutting at least part of a printing material, in particular a paper web, is provided, the control and / or regulation of the actuating device taking place as a function of print format settings for the printing devices.

It can further be provided that the control device is designed to control and/or regulate a motor actuating device of a cutting device with cutting elements, in particular with cutting knives.

It can further be provided that the control device is designed to control and/or regulate the actuating device as a function of pre-stored or pre-calculated control curves.

It can further be provided that the cutting device has rotating cutting elements and the control device for controlling and / or regulating the actuating device is designed such that the cutting device can be operated with varying angular speed per revolution, in particular in such a way that when a cutting knife comes into contact with the paper web the angular velocity is equal to the conveying speed of a printing material, in particular a paper web.

Materials suitable for printing other than paper or paper webs, such as sheets of paper, foils, cardboard or even metal sheets, are also conceivable as printing materials.

Fig. 1:

Formatvariable Rollendruckmaschine

Fig. 2:

Formatvariable Rollendruckmaschine mit Steuerung

Fig. 3:

Steuerkurven

Fig. 4:

Druckeinheiten für berührungslosen Druck, insbesondere mit Inkjet-Druckeinrichtungen

Fig. 5:

Falzapparat (a) in Seitenansicht und (b) in Draufsicht

Fig. 6:

alternative Ausführung eines Falzapparats entsprechend Fig. 1 und 2

Fig. 7:

Detailansicht eines Schneidmoduls nach Fig. 1, 2 und 6

Fig. 8:

Anordnung von zwei verschiebbaren Falztrichtern

Fig. 9:

Falzlinien und Bahnführung auf einen Falztrichter bei Druckeinrichtungen mit Ausdehnung über einen Teil der Papierbahnbreite

Fig. 10:

alternative Falzlinien und Bahnführung auf zwei Falztrichter bei Druckeinrichtungen mit Ausdehnung über einen Teil der Papierbahnbreite

Fig. 11:

Falzlinien und Bahnführung auf zwei Falztrichter bei alternativen Druckeinrichtungen mit Ausdehnung über einen Teil der Papierbahnbreite

Fig. 12:

Schematische Darstellung einer Verarbeitungsmöglichkeit einer Papierbahn im Falzapparat nach den vorherigen Figuren

Fig. 13:

Schematische Darstellung einer alternativen Verarbeitungsmöglichkeit einer Papierbahn im Falzapparat nach den vorherigen Figuren

Fig. 14:

Nachverarbeitungseinrichtung mit Schneidmodul und Auslagemodul

Fig. 15:

Draufsicht auf eine Nachverarbeitungseinrichtung mit Schneidmodul und Auslagemodul nach den vorherigen Figuren

Fig. 16:

Schematische Darstellung einer Verarbeitungsmöglichkeit einer Papierbahn mit Bahnwendeeinrichtung und Nachverarbeitungseinrichtung nach den vorherigen Figuren

Fig. 17:

Aufschuppen von Papierbögen zu mehrlagigen Produkten

Specific exemplary embodiments of the present invention are described below with reference to Figures 1 up to 18 shown. Show it:

Fig. 1:

Variable format web printing machine

Fig. 2:

Variable format web printing machine with control

Fig. 3:

Control curves

Fig. 4:

Printing units for non-contact printing, especially with inkjet printing devices

Fig. 5:

Folder (a) in side view and (b) in top view

Fig. 6:

alternative design of a folder accordingly Fig. 1 and 2

Fig. 7:

Detailed view of a cutting module Fig. 1 , 2 and 6

Fig. 8:

Arrangement of two movable folding formers

Fig. 9:

Folding lines and web guidance on a folding former in printing devices with an extension over part of the paper web width

Fig. 10:

alternative folding lines and web guidance on two formers for printing devices with an extension over part of the paper web width

Fig. 11:

Folding lines and web guidance on two folding formers in alternative printing devices with an extension over part of the paper web width

Fig. 12:

Schematic representation of a processing option for a paper web in the folder according to the previous figures

Fig. 13:

Schematic representation of an alternative processing option for a paper web in the folder according to the previous figures

Fig. 14:

Post-processing device with cutting module and delivery module

Fig. 15:

Top view of a post-processing device with cutting module and delivery module according to the previous figures

Fig. 16:

Schematic representation of a processing option for a paper web with a web turning device and post-processing device according to the previous figures

Fig. 17:

Stacking sheets of paper into multi-layer products

Fig. 1 shows a variable-format printing press in the form of a variable-format web printing press, in particular a variable-format heatset web printing press, for example for book printing or illustration printing. This has a roll changer 101, from which a paper web 108 is unwound as the printing material and is guided through printing units 102a, 102b. The paper web is then guided to a folding apparatus 103, which has the following: a web turning device 104, for example in the form of a turning bar device, a folding module 105, a cutting module 106 and a delivery module 107. In a certain embodiment, the folding module 105 can also be accessed be dispensed with or at least it can be circumvented, as will be described below in connection with Figure 16 .

As already shown in the graphic representations of the Figures 1 , 2 , 6 and 7 can be removed, these figures show device 103 for cutting paper webs 108 with a cutting module 106, which contains a cutting device 6 or cutting devices 6, the cutting module 106 having guide devices 206, 208, the at least partially flat guide areas F1, F2 for guiding the paper web 108 through the cutting module 106, or movable guide areas F1, F2, which have movable guide elements with a paper web 108, which are designed so that they move together with a paper web at least in the guide area in the running direction of the printing material or the paper web.

It is provided and shown accordingly in the graphic representations of Figures 1, 2, 6 and 7 a) and b) that a guide device 206, 208 encloses a cutting element 207, 209 of a cutting device 6. It can be provided that the cutting element 207, 209 is designed in such a way as to cut a paper web 108 only in those partial areas TB1, TB2 of a paper web 108 in which a guide device 206, 208 has no contact with a paper web 108. These sub-areas TB1, TB2 are particularly in the Figure 7 b ) shown.

As already shown in the graphic representations of the Figures 1 , 2 , 6 and 7 can be removed, these figures show that the guide devices 206, 208 are designed as a strip line. Furthermore, in the running direction L of a paper web 108, a plurality of cutting elements 207, 209 arranged one behind the other are provided, which are designed for cutting a paper web 108 in partial areas TB1, TB2 of a paper web 108, which are offset from one another transversely to the running direction L of a paper web 108. Each of the cutting elements 207, 209 is designed so that it only produces a cut or partial cut in those areas of a paper web 108 in which a guide device 206, 208 has no contact with the printing material, in particular with a paper web. It can therefore go through anything the cutting elements 207, 209, for example, a perforation of a paper web can be produced or a first partial cut a of a paper web can be produced by a first cutting element 207 (see Fig. 7b ) ), which is then expanded or supplemented by a second cutting element 209 or further cutting elements to form a complete cut b of a paper web. The cutting elements 207, 209 do not have to be offset from one another overall; it is sufficient if the elements of the cutting elements 207, 209 required for the cut, such as blades or partial cutting knives 16 or blade sections or cutting knife sections of a paper web 108, are interrupted transversely to the running direction L of a paper web 108 Cutting knife 16 are offset from one another. The cutting knife 16 can have as many partial cutting knives as partial areas TB1, TB2 are provided transversely to the running direction L of a paper web 108.

The guide devices 206, 208 have movable guide areas F1, F2, this being realized in that the guide devices 206, 208 have movable guide elements FE1, FE2, which are movable together with a printing material, in particular with a paper web 108. The guide elements FE1, FE2 can therefore be designed so that they move together with a paper web 108 at least in the guide area F1, F2 in the running direction L of the paper web 108, in particular at the same speed at which the paper web 108 moves in the running direction L Paper web moves. This speed can also be determined by the movement of the guide elements FE1, FE2 in the guide areas F1, F2, for example by actively driven guide elements FE1, FE2. In Figure 7 it is shown that the guide elements FE1, FE2 can be designed as bands.

The endless paper web 108 runs in the running direction L into a first guide device 206, which is designed as a strip line. This first guide device 206 is guided around a first cutting device 6 with first cutting elements 207 in the form of cutting cylinders. The speed of the guide elements FE1, FE2 designed as belts in the guide areas F1, F2 in the running direction L is identical or approximately identical to the speed of the paper web 108 in the running direction L in the guide areas F1, F2. The first cutting elements 207 in the form of cutting cylinders carry out a first, interrupted cut a in the partial areas TB1 between the individual guide elements FE1 designed as bands. For this purpose, the cutting knife 16 of the first cutting elements 207 has blade sections or an interrupted blade, which is arranged or designed in such a way that a partial cut is only produced in the partial areas TB1. It can be provided that only during the cutting process is there a synchronous or almost synchronous speed between the cutting knife 16 of the first cutting elements 207 and the paper web 108, as described below for the corresponding angular speeds. At other times, the cutting knife 16 of the first cutting elements 207 can be ahead or behind in relation to the paper web or the speed of the paper web in the running direction L. During the advance or retard phase there is no contact between the cutting knife 16 of the first cutting elements 207 and the paper web 108.

The paper web 108 - which is now provided with a partial cut a or a perforation a in the partial areas TB1 - then leaves the first guide device 206 and is taken over by the second guide device 208. This second guide device 208 is guided around a second cutting device 6 with second cutting elements 209 in the form of cutting cylinders. The - in particular but not necessarily designed as bands - movable guide elements FE1 of the first guide device 206 mesh with the - in particular but not necessarily designed as bands - movable guide elements FE2 of the second guide device 208, as in Figure 7 b) shown. The paper web 108 is thus permanently guided by the guide device 206, 208, in particular by the guide elements FE1, FE2 in the running direction L of the paper web 108.

Due to the meshing arrangement of the guide elements FE2 of the second guide device 208 relative to the guide elements FE1 of the first guide device 206, the partial areas TB2 of the paper web 108 that have not yet been cut become accessible for a further cutting process for the second cutting device 6 with the second cutting elements 209. The For this purpose, cutting knife 16 of the second cutting elements 209 has blade sections or an interrupted blade, which is arranged or designed in such a way that a further partial cut is only produced in the partial areas TB2. The two partial cuts of the cutting blades 16 of the first and second cutting elements 207, 209 result in a total of a complete separating cut b, which separates a sheet B1 from the paper web 108.

The speed of the guide elements FE2 designed as belts in the guide areas F2 in the running direction L is identical or approximately identical to the speed of the paper web 108 in the running direction L in the guide areas F2, but can also be slightly greater than the speed of the paper web 108 in the running direction L in the management areas F2. It can be provided that only during the cutting process is there a synchronous or almost synchronous speed between the cutting knife 16 of the second cutting elements 209 and the paper web 108, as described below for the corresponding angular speeds. At other times, the cutting knife 16 of the second cutting elements 209 can have an advance or lag in relation to the paper web or the speed of the paper web in the running direction L. During the advance or retard phase there is no contact between the cutting blade 16 of the second cutting elements 209 and the paper web 108.

The first and second cutting elements 207, 209 as well as the guide device 206, 208 or the movable guide elements FE1, FE2 can each be driven by their own motors 28 and / or driven by their own variators and / or some or all of the first and second cutting elements 207, 209 as well as the guide device 206, 208 can be driven via a common motor 28 and / or via common variators.

The Fig. 4 shows that the printing units 102a, 102b have printing devices 109, 109a, 109b, which are all designed to be free of rotating printing cylinders. The printing devices 109, 109a, 109b are designed for the contactless application of printing ink to the paper web 108.

The printing devices 109, 109a, 109b according to the exemplary embodiments described here can be designed as inkjet printing devices 109, 109a, 109b or, for example, as toner-based printing devices 109, 109a, 109b or other printing devices 109, 109a, 109b that do not require solid printing plates .

Fig. 2 , 6 and 7 show the web printing machine again Fig. 1 with an associated control device 20. The control device 20 is provided on the one hand for controlling and / or regulating the printing devices 109, 109a, 109b. At the same time, the control device 20 is at least also provided for controlling and/or regulating an - here motorized - actuating device 28 of at least one cutting device 6 for cutting at least part of the paper web 108. The cutting device 6 is after Fig. 2 and Fig. 6 and 7 as well as Fig. 15 designed as a cutting knife cylinder 207, 209 with cutting knives 16, the cutting knife cylinder 207, 209 rotating during operation of the web printing press and thereby bringing the cutting knives 16 into regular contact with the paper web 108. The motor actuator 28 is according to the Figure 2 and Fig. 15 designed as a drive motor.

The control and/or regulation of the actuating device 28 takes place depending on the print format settings 25, 26 for the printing devices 109, 109a, 109b. The control device 20 is designed to control and/or regulate the motor actuating device 28 as a function of pre-stored or pre-calculated control curves 27.

For this purpose, the control device 20 has a computing device or a data device 24 designed as a data memory, in which control curves 27 are stored or calculated. Fig. 3 shows a schematic example of such control curves. These control curves describe Fig. 3 the time course of the angular velocity wS, wS 'of the cutting blade 16 of the cutting device 6. The motor actuating device 28 - i.e. the drive motor - of the cutting device 6 is now controlled or regulated in such a way that the Cutting device 6 and thus also each cutting knife 16 per revolution tU - i.e. during the period from t = 0 to t = tU, which the cutting cylinder requires for a full revolution of 360 ° - moves with varying angular speed wS, wS '. The variation of the angular velocity wS, wS' now follows Fig. 3 in such a way that when a cutting knife 16 comes into contact with the paper web at time tK, the angular velocity wS, wS 'of the cutting device 6 and thus also of each cutting knife 16 - or, more precisely, the tangential component of the rotational speed of the contacting cutting knife 16 in the running direction of the paper web at time tK - is equal to the conveying speed vB of the paper web 108, i.e. equal to the speed vB at which the paper web 108 moves through the printing press. The rotational speed is therefore adjusted per revolution of the rotating cutting device so that, at least when there is contact between the cutting knife 16 and the paper web 108, both are at the same speed, so that there is no relative speed between the two at the contact point. If the angular speed wS of the cutting device 6 and thus also of each cutting knife 16 - or, more precisely, the tangential component of the rotational speed of the contacting cutting knife 16 in the running direction of the paper web 108 - is smaller than the conveying speed vB of the paper web 108, contact occurs at the time tK between Cutting knife 16 and paper web 108 accelerate the cutting knife 16 to conveying speed vB. If the angular speed wS 'of the cutting device 6 and thus also of each cutting knife 16 - or, more precisely, the tangential component of the rotational speed of the contacting cutting knife 16 in the running direction of the paper web 108 - is greater than the conveying speed vB of the paper web 108, contact occurs at time tK between Cutting knife 16 and paper web 108 delay the cutting knife 16 to conveying speed vB. This prevents the paper web 108 from tearing or picking.

The control device 20 has a control and/or regulating module 21, which is connected in terms of data technology to the data device 24 as well as to the printing devices 109, 109a, 109b and the motor actuating device 28 - i.e. the drive motor - of the cutting device 6.

Next shows Fig. 2 that the control device 20 has or at least can have a further data memory 22, in which print format settings 26 are stored and which is connected to the control and / or regulation module 21 via a data connection. These print format settings 26 can, for example, be in the form of pre-stored data on print image formats or print page formats, in particular in the form of data on length (extension in the running direction of the paper web 108) and/or width (extension in the direction transverse to the paper web 108), but also for the alignment (distance of the printed image from the edge of the paper web 108, distances between the printed images, angle between the longitudinal edge of the printed image and the running direction L of the paper web 108).

Continues to show Fig. 2 that the control device has or at least can have a data processing device 23, in which print format settings 25 can be calculated and / or processed, in particular in the form of data on the length (extension in the running direction of the paper web 108) and / or the width (extension in the transverse direction to the paper web 108), but also to the alignment (distance of the printed image from the edge of the paper web 108, distances between the printed images, angle between the longitudinal edge of the printed image and the running direction L of the paper web 108). With the data processing device 23, for example, pre-stored data on print image formats or print page formats that are stored in the data memory 22 can be read out, changed and/or processed, and/or new or changed data on print image formats can also be created via other interfaces. Formats or printed page formats are read in via the data processing device 23 and transmitted via a data connection to the control and / or regulation module 21 of the control device 20.

Figure 4 now shows an example of the internal structure of the printing units 102a, 102b. The paper web 108 is guided one after the other through the printing units 102a, 102b - for example via suitable deflection rollers or other web guiding elements. The paper web 108 is in the printing units 102a, 102b over web guide elements 130 such as support rollers, which are adjacent to the printing devices 109a, 109b. After Figures 4 These web guide elements 130 or support rollers lie opposite the printing devices 109a, 109b on the other side of the paper web 108. The web guiding elements 130 or support rollers serve to guide the paper web 108 and ensure that a predefined distance is maintained between the paper web 108 and the printing devices 109a, 109b. In principle, this distance can be set fixedly, but it can also be controlled or regulated by a control device such as the control device 20, for example in that the printing devices 109a, 109b or the web guide elements 130 are displaceable perpendicular to the web plane of the paper web 108, as shown by the double arrows in Fig. 4 indicated.

Figure 4 further shows at least one dryer 110, which is arranged downstream of one of the printing units 102a, 102b in the running direction L of the paper web 108. The running direction L of the paper web in the sense of this invention does not define a global fixed plane in space, because the paper web 108 undergoes several changes of direction and possibly also wraps, such as Fig. 1 clearly shows. However, for the person skilled in the art, a clear spatial direction can be determined locally from the local running direction L of the paper web 108 - i.e. for each web section of the paper web 108.

Figure 4 shows an embodiment in which each dryer 110 is structurally integrated into a printing unit 102a, 102b. Each dryer 110 can be structurally or spatially integrated into a printing unit 102a, 102b in such a way that the printing devices 109a, 109b are prevented from being influenced by the dryer operation. Each of the dryers 110 can thus be arranged spatially above the printing devices 109a, 109b of the respective printing unit 102a, 102b. This avoids the risk of the resulting heat rising and heating the printing devices 109a, 109b in an undesirable manner. However, with a suitable design of the dryer 110 and the printing unit 102a, 102b, the dryer 110 can also be arranged below the printing devices 109a, 109b of the respective printing unit 102a, 102b.

Figure 5 and Figure 6 each show an exemplary embodiment of a folding apparatus 103, which is arranged downstream of the printing units 102a, 102b or can be arranged downstream of printing units 102a, 102b and which follows Fig. 5 and 6 has several folding devices T1, T2 in the form of folding funnels arranged in a row in the running direction L of the paper web 108. The folding devices T1, T2 are each arranged in a funnel module TM1, TM2. As in Fig. 16 will still be explained, but in the sense of the invention the folding devices T1, T2 can also be dispensed with or at least these can be bypassed.

Folding apparatus 103 includes a web turning device 104, for example in the form of a turning bar device, a folding module 105 (can also be used as an example in the embodiment according to Fig. 16 shown omitted), a cutting module 106 and a delivery module 107. Cutting module 106 and delivery module 107 include in the example according to Figures 5 and 6 The following - but not mandatory - components: a first pull group 1 (in the example driven by its own motor), a strand cutting device 2, a second pull group 3, a possibly optional cutting register camera 4 for optical monitoring of the operation and function of the cutting device 6 and for Delivery of corresponding monitoring data to the control device 20, a small pull group 5, a cutting device 6 with drive motor 28, a paper sheet transport element 131 in the form of a tape line, a pivoting device 7 for the paper sheet transport element 131, an adjustable one (to product length or print format). Belt roller 8, a drive 9 for the belt line 7, a device 10 for slowing down the transport movement of sheets of paper B1, B2, B3... with a drive 11 and a clamping point for the belt roller that can be adjusted (to the product length or print format), a transfer device 211 for transferring the paper sheets to a belt line of a paper sheet delivery, adjustable to the respective format length of the paper sheets and a belt slowing device 212 of the belt line in the delivery.

How Fig. 8 shows, the folding module 105 is designed such that each folding device T1, T2 - i.e. each former - is displaceable in at least one spatial direction R1, R2, with the first folding device T1 - i.e. the first folding former - in a first spatial direction R1 is displaceable parallel to the plane of the drawing (double arrow) and the second folding device T2 - i.e. the second former - is displaceable in a spatial direction R2 perpendicular thereto perpendicular to the plane of the drawing (arrowhead represented by a circle with a dot, end of the arrow represented by a circle with a cross). This offers improved freedom in the alignment and adaptation of the folding devices T1, T2 to a wide variety of print formats and paper web widths or paper web guides, without the components 1 to 12 of the post-processing device 103a downstream in the running direction of the paper web 108 having to be adapted to changed print formats and paper web widths or paper web guides ( e.g. spatially moved). Rather, this can be achieved via the displaceability of the folding devices T1, T2. For example, a change in the width of the paper web 108 can be compensated for by moving the first folding device T1 - i.e. the first folding former - in the first spatial direction R1 parallel to the plane of the drawing in such a way that the center of the folded paper web 108 is again exactly on the folding line (dashed line ), which leads to the tip of the second folding device T2 - i.e. the second former. In particular, the relative position and setup of the paper sheet transport element 131 in the form of a ribbon line does not have to be adapted to changed print formats and paper web widths or paper web guides, as is the case with DE 40 30 863 A1 the case is.

How Fig. 8 shows, the first folding device T1 - i.e. the first folding former - can also be moved in the second spatial direction R2 perpendicular to the plane of the drawing (arrowhead represented by a circle with a dot, arrow end represented by a circle with a cross). For example, an asymmetrical, i.e. off-center, web guidance of the paper web by the printing devices with simultaneous variability of the web widths and print formats can be compensated for by the two-axis displaceability, without the components 1 to 12 of the post-processing device 103a downstream in the running direction of the paper web 108 having to adapt to changed print formats and paper web widths or paper web guides must be adjusted (e.g. spatially shifted). For example, instead of a full-width paper web 108, only a partial-width web can be guided through the printing units 102a, 102b so that it is not guided centrally or symmetrically through the printing units 102a, 102b but rather off-center or asymmetrically. The offset of the center of the paper web 108 relative to the center of the printing units 102a, 102b can then be compensated for by moving the first folding device T1 - i.e. the first folding former - in the second spatial direction R2 perpendicular to the plane of the drawing.

As already described, the folding apparatus 103 or the post-processing device 103a has a paper sheet transport element 131 with a drive 9 - here in the form of a motor. The drive 9 is controlled or regulated by the control device 20 or a control device separate therefrom in such a way that paper sheets B1, B2, B3, B4, B5, B6 separated from the paper web 108 by the cutting device 6 are moved away from the remaining paper web 108 in the running direction L Paper web 108 can be accelerated. This is in Fig. 15 shown and can in principle also be used with a folder according to Figures 1 , 2 , 6 and 7 be realized in this way.

The paper sheet transport element 131 is then followed by a device 10 with a drive 11 - here in the form of a motor. The drive 11 is also controlled or regulated by the control device 20 or a separate control device in such a way that the transport movement of the previously accelerated paper sheets B1, B2, B3, B4, B5, B6 is slowed down. The device 10 is designed in such a way that, in addition to slowing down, at least some of the paper sheets B1, B2, B3, B4, B5, B6 are raised or lowered in order to cause the paper sheets B1, B2, B3, B4, B5, B6 to scale up to achieve, as in Fig. 17 shown. This is done after Fig. 14 by a disk or roller 15, which has at least one cam 13 in the circumferential direction, which cooperates with a corresponding counter cam 14 of a corresponding counter disk or counter roller 17. The same also applies to a facility in accordance with Figures 1 , 2 , 6 and 7 .

Fig. 17 shows how the individual sheets of paper B1, B2, B3, B4, B5, B6 are pushed together to form a scale. This scale then becomes a stack of sheets of paper placed one on top of the other in a downstream collator 1....6 condensed, for example into a block of books and if necessary the page edges are then trimmed again in order to obtain a stack of individual sheets, for example in the form of a usual book as the final printed product of a book printing production type. View X shows a top view of this stack. It shows in the example Fig. 17 each sheet has two printed pages. This corresponds to the result of a type of production Fig. 12 .

Figures 12 and 13 show types of production with the aforementioned invention, in which a (full-width) paper web 108 is cut by a longitudinal cutting device 26 for dividing the paper web 108 into partial webs TB and is then passed one after the other over two folding formers (indicated by triangles), as in Fig. 9 and 10 shown. Each partial web TB is then subsequently cut into sheets of paper B1, B2 by the cutting device 6.

• eine Bahnwendeeinrichtung 104, die den Druckeinheiten 102a, 102b nachgeordnet ist und mehrere Längsschneideinrichtungen 26 zum Aufteilen der Papierbahn 108 in Teilbahnen TB aufweist, sowie
• eine falztrichterlose Nachverarbeitungseinrichtung 103a nach Fig. 23 und 24, die ein Schneidmodul 106 zum Abtrennen von Papierbögen B1, B2, B3, B4, B5, B6 von der verbleibenden Papierbahn 108 und ein Auslagemodul 107 zum Sammeln und/oder Auslegen und/oder Aufschuppen der Papierbögen B1, B2, B3, B4, B5, B6 aufweist.

How Fig. 16 in connection with the Figures 14 and 15 shows, the folder 103 does not necessarily have to have a folding module 105 with folding devices T1, T2. In a certain embodiment, the folding module 105 can also be dispensed with or at least can be bypassed. This can be the case with a setup or production type of the folder 103 Fig. 16 take place. All you need to do is

• a web turning device 104, which is arranged downstream of the printing units 102a, 102b and has a plurality of longitudinal cutting devices 26 for dividing the paper web 108 into partial webs TB, and
• 23 and 24, which has a cutting module 106 for separating sheets of paper B1, B2, B3, B4, B5, B6 from the remaining paper web 108 and a delivery module 107 for collecting and / or laying out and / or stacking the Has paper sheets B1, B2, B3, B4, B5, B6.

The partial webs TB produced in the web turning device 104 are no longer folded, but are simply cut into sheets of paper B1, B2, B3 by the cutting device 6 - possibly after some or all of the partial webs TB have been previously cut by appropriate devices such as turning bars the web turning device 104 were placed on top of each other. The paper sheets B1, B2, B3, B4, B5, B6 are then scaled up again, as in Fig. 17 shown.

Claims (4)

1. A device (103) for cutting paper webs (108), which can be transported at a conveying speed, comprising a cutting module (106), which includes a rotating cutting means (6), wherein the cutting module (106) has guide devices (206, 208), which have several partially planar and movable guide regions (F1, F2) for guiding the paper web through the cutting module (106), wherein movable guide elements (FE1, FE2) of the guide regions (F1, F2) mesh with the paper web (108), wherein each guide device (206, 208) encompasses a cutting element (207, 209) of a cutting means (6), and the cutting elements (207, 209) for cutting the paper web (108) is formed as at least one cutting knife (16) only in those subregions (TB1, TB2) of the paper web (108), in which a guide device (206, 208) does not have any contact with the paper web (108), characterized in that the rotating cutting means (6) can be operated at a varying angular speed per revolution and that the angular speed of the cutting means (6) is equal to the conveying speed of the paper web (108) in response to contact of a cutting knife (16) with the paper web (108).
2. The device according to claim 1, characterized in that at least one guide device (206, 208) is formed as belt conveyor, and that the cutting elements (207, 209), which are formed for cutting the paper web (108) in the subregions (TB1, TB2) of the paper web (108) and which are offset to one another transverse to the running direction (L) of the paper web (108), are arranged one behind the other in the running direction (L) of the paper web (108).
3. A folding apparatus comprising a device according to one of the preceding claims, characterized in that the folding apparatus (103) has several folding devices (T1, T2), which are arranged in series in the running direction (L) of the paper web (108)or which are arranged parallel to one another.
4. The folding apparatus according to claim 3, characterized in that each folding device (T1, T2) is displaceable in at least one spatial direction (R1, R2), wherein the first folding device (T1, T2) is displaceable in a first spatial direction (R1), and the second folding device (T1, T2) is displaceable in a spatial direction (R2) perpendicular thereto, and/or that at least one folding device (T1, T2) is displaceable in a spatial direction (R1) and is additionally also displaceable in a second or in a third spatial direction (R2), which is perpendicular to the first spatial direction (R1).

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