EP3492229B1 - Device and method for cutting or perforating a sheet of paper - Google Patents

Description

The invention relates to a device and a method for processing a digitally printed paper web conveyed continuously through the device with a perforating tool for perforating the paper web transversely to the direction of travel and with a cutting tool for cutting off printed sheets from a downstream end of the paper web, each on a first Side of the paper web and are arranged transversely or approximately transversely to the running direction of the paper web, as well as with at least one counter tool arranged on a second side of the paper web opposite the first side.

From the EP2818331 A2 a generic device and a method for cutting or perforating a digitally printed paper web is known, which is further processed with a perforating and cutting station and with cross and longitudinal folding devices to form printed sheets with different numbers of pages. The perforating and cutting station, which perforates or cuts the paper web transversely to the running direction, consists of two processing stations arranged along the paper web, a perforating device and a cutting device. Such a perforating device is for example in EP1484145 A2 described in more detail. It comprises a constantly rotating, hardened steel cylinder and a perforating tool which interacts with the steel cylinder and rotates intermittently about an axis. The cutting device of the EP2818331 A2 has a cutting tool designed as a guillotine-like knife with which the paper web can be cut over its entire width. During the cut, the paper web stands still for a short time. With a compensation device arranged between the perforating device and the cutting device, in which the paper web is deflected around several rollers, the speed differences between the perforating device and the cutting device resulting from the stopping and acceleration process are compensated. After perforation and cutting, the printed sheets separated from the paper web can be folded once or several times across and lengthways to the direction of travel before they are then stacked to form a book block and transported away. Although a conveyed paper web can be cut or perforated with the device, the costs, the space requirement and the control and regulation effort of this device are high due to the number of processing stations. Due to the acceleration and deceleration processes for cutting, there is a limitation of the paper speed and the number of cutting operations per unit of time, which is known to the person skilled in the art. The costs are further increased by the compensation device arranged between the perforating device and the cutting device.

In the prior art and in the context of this application, the term "perforating" means partial severing, partial cutting or deformation such as e.g. understood a squeezing of the paper web at a point where the paper will later be folded. “Cutting” means a complete severing of the paper web.

With a conventionally printed paper web on which the print image is repeated according to the circumference of the printing cylinder, the same printed sheets of a first type are produced in each case. After a changeover, printed sheets of a second, third, etc. type are produced. A book or part of a book, as well as a brochure or newspaper, is created by collating several printed sheets that differ from one another. Before they are collated, the different printed sheets are each separated, for example, from a stack of identical printed sheets produced with one another. In contrast, with a digitally printed paper web, entire books or book parts are printed one after the other on the paper web. The sequentially printed printed sheets can have different page numbers and, after cutting, folding and stacking the subsequent printed sheets, form a book or a book part.

A device for feeding single sheets to a printer, with a device for separating the single sheets from a paper web moved periodically in a conveying direction, is in the EP1394091 A1 disclosed. The single sheets are cut from the paper web by means of a cutting drum which is arranged transversely to the conveyor device and rotates about an axis and which has a cutting tool and fed to the printer with a conveyor device. During the cutting process, the cutting drum is driven by a drive motor via a toothed belt. The rotating cutting tool interacts with a stationary counter-tool which is arranged on the other side of the paper web. After a single sheet has been severed, the paper web and the cutting drum are stopped in order to be accelerated from standstill for the next cutting process. With this device for separating individual sheets of different lengths, the paper web cannot be perforated. In addition, the device works relatively slowly because the paper web must first be stopped and then accelerated again.

Another device for cutting a paper web is in the EP1186561 A1 disclosed. It has a rotating cutting cylinder that holds at least one cutting tool and one perforating tool. The tools of the cutting cylinder, designed as knives, interact with a stationary counter-tool. The paper strip passed between the cutting cylinder and the stationary counter tool is then cut or perforated one after the other according to the arrangement of the cutting and perforating tools on the circumference of the rotating cutting drum. The paper web is processed using the principle of a scissors cut, in which there is no sudden processing over the entire width of the paper web, but in which only an area of the cutting knife is in contact with the counter knife. The cutting area moves from one edge of the paper web to the other as it is cut. In order to achieve the desired scissors cut, which is advantageous in terms of cut quality, the service life of the cutting tools and the smoothness of running, the cutting drum is inclined at an acute angle in the plane of the paper web and with respect to the counter tool. If print sheets with a different format are to be cut from the paper web or if the perforation is to be arranged at a different point on the print sheet, the position of the cutting and / or perforating tools on the cutting drum must be changed. Alternatively, the cutting drum can be replaced by another cutting drum with appropriately attached cutting and perforating tools. Adjusting the distances from cut to cut, from cut to perforation and from perforation to perforation as well as changing the sequence of the cutting and perforating operations is only possible when the machine is at a standstill and with manual intervention.

In the JPH0466478A describes a device for folding and severing a section of an endless paper web with which cosmetic or disposable towels are made from paper. The leading end of the paper web is passed between a continuously rotating cutting roller and a transfer roller with the opposite direction of rotation. With a folding blade attached to the circumference of the cutting roller, the leading end of the paper web is folded at a fixed distance from the end of the paper web transversely to the running direction. For this purpose, the folding blade presses the paper web against the transfer roll and against elastic supports arranged on its circumference. In the area of the elastic supports, the transfer roll has suction openings with which the paper web is sucked onto the transfer roll at a fold point on the paper web. The transfer roller transports the paper web sucked in at the fold between another roller to another transport roller. During this, a cutting knife attached to the circumference of the rotating cutting roller comes into engagement with a stationary knife and separates a section with a defined, uniform length from the paper web. If the fold is located between the transfer roller and the further transport rollers, the folded section is separated from the elastic supports of the transfer roller by means of several belts running around the transfer roller. At the same time, the section is sucked in by the further transport roller and fed with it, for example, to a stacking device. The length of the section and the position of the fold produced cannot be varied. They are fixed by the diameter of the transfer and cutting rollers and by the arrangement of the folding blade and the cutting knife on the circumference of the cutting roller.

The present invention is based on the object of creating a method and a device with which a digitally printed and continuously conveyed paper web can optionally be perforated or cut at variable intervals during the run even at high speeds. In addition, the device should have a simple and space-saving design and should therefore be able to be implemented cost-effectively.

The object is achieved in a generic device in that the device for receiving the perforating tool and the cutting tool has a common tool carrier and for receiving the at least one counter-tool has a rotating cutting drum with an axis of rotation oriented transversely or approximately transversely to the direction of travel of the paper web and the perforating tool and the cutting tool are fastened at a distance from one another on the tool carrier and the tool carrier can optionally be moved into two working positions, in each of which the perforating tool or the cutting tool train for processing the paper web can be brought into engagement with the at least one counter-tool.

This means that in a single, compact processing station on a print sheet printed on a digitally printed and continuously conveyed paper web, optionally no, one or more perforations can be made and print sheets can be separated from the paper web with the cutting tool. Continuous transport is understood to mean uninterrupted transport. This can take place at a constant or approximately constant speed. In contrast, a transport in which the paper web is repeatedly stopped or almost stopped during processing does not correspond to a continuous transport in the sense of this application. The distances between the processing of the paper web with the perforating or cutting tool as well as the processing sequence can be continuously adapted to the printed sheets printed on the paper web. The printed sheets can differ in format and the number of pages or the number of transverse perforations along which the printed sheets are cross-folded downstream of the device according to the invention.

According to a further development of the invention, it is provided that the tool carrier is arranged so that it can pivot back and forth about a pivot angle between the two working positions about a pivot axis oriented transversely or approximately transversely to the running direction T of the paper web and parallel to a transport plane paper web, so that either the perforating tool or the cutting tool can be brought into engagement with the at least one counter tool. Due to the pivoting movement through a relatively small pivoting angle, when changing between the working position, the tools cover only a minimal distance with little change in height. The pivot angle has a preferred value which lies in a range between 5 ° and 90 °. The pivot angle is even more preferably in a range between 15 ° and 30 °. The change in height of the tools has the advantage that the tools are arranged at a distance from the paper web when they are not in their working position. Furthermore, less mass is accelerated and decelerated again by the pivoting movement than if the entire tool carrier had to be shifted in a linear direction between two working positions. Thanks to the small distance that the tools cover when swiveling around the swivel angle, the change from one working position to the other can be carried out very quickly and on the fly. In addition, the storage of the tool carrier can be rigid, simple, inexpensive and are designed to save space.

It is advantageous if the axis of rotation of the cutting drum and the pivot axis of the tool carrier are arranged at an acute angle to one another in a plane parallel to the transport plane of the paper web, so that, according to the principle of a scissors cut, a cutting edge of the perforating tool or a cutting edge of the cutting tool train only in one Part of its length can be brought into engagement with the at least one counter tool. As a result, the cutting area moves from one edge of the paper web transversely to the running direction to the other edge during processing. Since the perforation or the cut does not take place in one fell swoop across the entire width of the paper web, the forces occurring during the processing and the noise emissions can be significantly reduced. At the same time, the scissors cut increases the quality of the cut and the service life of the cutting tools.

It is also advantageous if the tool carrier is connected to a drive shaft of a third drive motor via a crank mechanism for performing the pivoting movement, the crank mechanism having a push rod which is connected via a first axis to a crank arranged on the drive axis of the third drive motor and via a second axis is connected to the tool carrier. With the crank mechanism, the rotary movement of the third drive motor can be converted into a pivoting movement of the tool carrier in a simple and inexpensive manner, without the third drive motor having to stop in one of the working positions and change the direction of rotation. Because of the crank drive, a slight deviation in the rotational position of the third drive motor in the two dead centers of the tool carrier has hardly any effect on its position for processing the paper web. The third drive motor can be arranged upstream or downstream of the pivot axis of the tool carrier.

According to a further embodiment, the third drive motor is designed as a gearless torque motor. Despite high torques, even at low speeds, torque motors are small in size and there is no need for a gear unit. The result is a compact, backlash-free and cost-effective drive.

According to a next advantageous embodiment of the device, the first axis, the second axis and the drive axis of the third drive motor are parallel to one another. Furthermore, the first axis and the drive axis are arranged at a distance from one another by a crank radius. Due to the parallel axes, the bearings in the push rod and in the crank can be designed simply and inexpensively, as there are hardly any axially acting forces but a direct flow of forces from the tool carrier to the machine frame. The length of the crank radius has an influence on the swivel angle of the tool carrier.

It is also advantageous if the first axis, the second axis and the drive axis of the third drive motor are each arranged in one plane when the tool carrier is in one of the two working positions. As a result, the cutting forces that occur when processing the paper web are transmitted very directly from the cutting and perforating tools to the machine frame via the tool carrier, the push rod and the crank, without a disruptive torque being transmitted to the drive axle of the third drive motor. The third drive motor can thus be made smaller, which leads to cost savings.

In a next development of the invention, the tool carrier can be brought into a rest position between the two working positions in which neither the perforating tool nor the cutting tool is in engagement with the counter tool. When setting up a machine, it is advantageous if the paper web can be guided through all processing stations without being perforated or sheets being cut off from their end. Furthermore, in the rest position, very long arc or section lengths can also be produced, since the cutting drum can continue to rotate and a next cut can only be determined by pivoting the knife carrier from the rest position into a working position.

In a further embodiment of the invention, the cutting drum with the at least one counter tool is driven by a second drive motor, the second drive motor being connected to a drive control for regulating its speed and angular position. In this way, sheets of different lengths can be cut off from the downstream end of the paper web in a simple manner and perforations can be made at any point. The connection with the drive control ensures precise control of the position and speed of the cutting drum.

It is also advantageous if the third drive motor and a first drive motor of a drive device for transporting the paper web are also connected to the drive control. This can be used to ensure that these two drive motors to control their position or their angle of rotation and their speed are controlled precisely. Furthermore, individual changes and / or corrections to their rotational position and their rotational speed can easily be made via the drive control, taking into account the movement profiles of the other drives connected to the drive control.

According to a further embodiment, a sensor connected to the drive control is arranged upstream of the cutting drum, with which an identification feature applied to the paper web can be detected. In this way, information on the actual position of the sheets printed on the paper web and / or on the type of processing of the paper web can be transmitted to the drive control in a simple manner or, based on the identification feature, information on processing the print sheets can be called up from a higher-level control.

According to a next embodiment of the device, the cutting drum, the second drive motor, the tool carrier and the third drive motor are mounted in a common machine frame. The exact alignment of the axis of rotation of the cutting drum to the swivel axis of the tool carrier as well as the exact arrangement of the crank mechanism and the third drive motor can be ensured. Furthermore, the common machine frame enables the components listed to be assembled and adjusted outside of the movement space of the paper web and the cut printed sheets. Furthermore, the setting of the perforating tool and the cutting tool, which both interact with the at least one counter-tool, is also simplified with the common machine frame.

According to a further advantageous embodiment, the machine frame with an adjustment device is designed to be pivotable relative to the paper web about a pivot point parallel to the transport plane of the paper web. When changing the length of the pages printed on the paper web or changing the distances between two processes - a perforation or a cut - the position of the tools arranged in the machine frame must be adjusted due to the cutting principle of the scissor cut so that the processes are perpendicular to the running direction of the paper web or takes place perpendicular to the edges of the paper web. With the adjustment device, the position of the machine frame around the pivot point can be changed easily and in a short time. Advantageously, the adjustment device comprises an adjustment motor which is connected to the drive control or is connected to a higher-level controller, as well as, for example, an adjusting spindle that is drive-connected to the adjusting motor.

The object is also achieved by a method in which the at least one counter-tool rotates about an axis of rotation aligned transversely or approximately transversely to the direction of travel of the paper web and in which a common tool carrier for processing the paper web, which accommodates the perforating tool and the cutting tool, selects one in each case is brought from two working positions and thereby the perforating tool or the cutting tool interacts with the at least one counter-tool and perforates the paper web transversely to its running direction or cuts off printed sheets from a downstream end of the paper web. This means that in a single processing station on a print sheet printed on a digitally printed and continuously conveyed paper web, optionally no, one or more perforations can be made and print sheets can be separated from the paper web with the cutting tool. The distances between the processing of the paper web with the perforating or cutting tool as well as the processing sequence - perforating or cutting - can be continuously adapted to the printed sheets printed on the paper web. The printed sheets can differ in format and the number of pages or the number of transverse perforations along which the printed sheets are cross-folded downstream of the device according to the invention.

According to an advantageous embodiment of the method, the tool carrier pivots about a pivot axis transversely or approximately transversely to the running direction of the paper web and parallel to a transport plane of the paper web by a pivot angle between two working positions, in each of the two working positions in which the tool carrier is stationary, either the perforating tool or the cutting tool comes into engagement with the at least one counter tool and perforates or cuts the paper web. The pivot angle can be 20 °, for example. It is advantageous if it lies in a range between 15 ° and 30 °. However, it should not be smaller than 5 ° and not larger than 90 °. The cutting quality and the cutting accuracy is significantly higher with the method described, in which a paper web is cut between a moving or rotating and a stationary tool than when processing between two moving tools. The pivoting movement of the tool carrier about the pivot axis ensures in a simple and inexpensive manner that one of the two tools is attached to the tool carrier is in a processing position with the at least one counter tool of the cutting drum in engagement and at the same time the other tool is spaced from the paper web and the processing position.

According to a next advantageous embodiment of the method, the continuously transported paper web is alternately perforated by the perforating tool and cut by the cutting tool, with a third drive motor connected to the tool carrier via a crank mechanism rotating at constant or approximately constant speed. Particularly at high speeds, the continuous or almost continuous drive of the tool carrier results in lower bearing forces and fewer vibrations in stop-and-go operation. The inertia of the third drive motor and the crank mechanism act as a flywheel in the two dead points of the tool carrier, which correspond to the working positions, and help to accelerate the tool carrier again after the brief standstill.

According to a further embodiment, the tool carrier is left in the respective working position and the third drive motor is stopped when several successive identical processing operations are carried out on the paper web. The third drive motor then begins to rotate again when the tool carrier is moved from one working position to the other after several consecutive identical processing operations on the paper web. The tool carrier therefore only has to be moved if the paper web is to be processed successively with a different tool. If, for example, the paper web is only cut and not perforated on printed sheets with two sides, the third drive motor, the crank mechanism and the knife carrier with the tools come to a standstill. The components are protected and the paper web or the printed sheets cut from it are prevented from being damaged by the perforating and cutting tool, which unnecessarily swings back and forth, or from being disturbed in their transport.

According to a further embodiment of the method, a first drive motor for transporting the paper web, a second drive motor for a cutting drum accommodating the counter tool, and the third drive motor for the tool carrier are controlled by a drive control. In the event of changes in the format of the printed sheets or in the event of disturbance variables, the drive control can react immediately and control the drives in such a way that the precise position of the paper web required for high cutting quality, the cutting and perforating tools and the at least one counter tool is guaranteed.

It is also advantageous if the signals of a sensor directed at the paper web are evaluated in the drive control and the evaluation of the signals influences the control of the drive motors. With the signal from the sensor, which detects the actual position of the paper web and the pages printed on it, the accuracy of the perforation or the cut of the paper web at the intended locations can be increased. Deviations in the position of the paper web in the running direction caused by slippage or stretching can be greatly reduced with this embodiment.

According to a further advantageous embodiment, at least the perforating tool, the cutting tool and the counter tool are pivoted together by an adjustment angle relative to the paper web parallel to the transport plane of the paper web. In this way, the paper web can optionally be perforated and cut at right angles to its running direction, even with different lengths of pages printed on the paper web and / or with paper webs with different widths. By pivoting when the machine is at a standstill, but also while the machine is running, paper webs with different widths and printed sheets with different formats can be produced using the advantageous cutting principle of scissors.

Further advantageous features emerge from the dependent claims, the following description and the drawings.

Fig. 1

Eine schematische Darstellung einer Vorrichtung zum wahlweisen Perforieren oder Schneiden einer Papierbahn entsprechend der Erfindung

Fig. 2

Eine schematische Seitenansicht er erfindungsgemässen Vorrichtung, bei der ein Werkzeugträger in einer ersten Arbeitsstellung steht und ein Perforierwerkzeug mit einem Gegenmesser im Eingriff steht

Fig. 3

Eine schematische Seitenansicht analog Fig. 2, bei der der Werkzeugträger in einer zweiten Arbeitsstellung steht, in der ein Schneidwerkzeug mit dem Gegenmesser im Eingriff steht.

Fig. 4

Einen Ausschnitt der Seitenansicht nach Fig. 3.

Fig. 5

Eine räumliche Darstellung einer Vorrichtung zum wahlweisen Perforieren oder Schneiden einer Papierbahn

Fig. 6

Eine schematische Darstellung einer Papierban, die vor dem Perforieren oder Schneiden in Längsrichtung gefalzt wird

Fig. 7a,b

Zwei schematische Darstellungen einer erfindungsgemässen Vorrichtung mit einer Verstelleinrichtung.

The invention is described in more detail below using an exemplary embodiment. Show:

Fig. 1

A schematic representation of a device for optionally perforating or cutting a paper web according to the invention

Fig. 2

A schematic side view of the device according to the invention, in which a tool carrier is in a first working position and a perforating tool is in engagement with a counter knife

Fig. 3

A schematic side view analogous Fig. 2 , in which the tool carrier is in a second working position in which a cutting tool is in engagement with the counter knife.

Fig. 4

A section of the side view Fig. 3 .

Fig. 5

A three-dimensional representation of a device for optionally perforating or cutting a paper web

Fig. 6

A schematic representation of a paper band that is folded lengthways before perforating or cutting

Figures 7a, b

Two schematic representations of a device according to the invention with an adjusting device.

In Fig. 1 a device 1 for perforating and cutting a paper web 2 continuously transported in the running direction T is shown schematically. The paper web 2 is printed upstream of the device 1 according to the invention with a digital printing machine (not shown) and can optionally be in an in Fig. 6 The longitudinal folding device shown schematically can be folded one or more times, so that the paper web 2 has one or more layers in the area of the device 1. On the in Fig. 1 single-ply paper web 2 shown, four-sided printed sheets 8 'and six-sided printed sheets 8 "are printed one behind the other, with FIG Fig. 1 only the upper sides S are visible. The sides S have a length L which can vary from side S to side S. The paper web 2 is driven by at least one drive device 9 arranged upstream of the device 1 for perforating and cutting the paper web 2. It has a single drive roller 10 or a pair of drive rollers 10, between which the paper belt is non-positively driven. The drive rollers 10 are connected to a first drive motor 11. Downstream of the device 1 for perforating and cutting the paper web 2 is a transport device 70 which, with its upper and lower transport elements 71, 72, takes over and transports one end 102 of the paper web 2 or the cut printed sheets 8 ', 8 ". The transport device 70 connects the device 1 downstream with one or optionally more, in Fig. 1 Sheet processing stations 80 shown only schematically. After one of the sheet processing stations 80, which is designed, for example, as a transverse and / or longitudinal folding device, a stacking device 6 for forming a stack 7 is provided from the end 102 of the paper web 2 separated and unfolded, one or more times transversely folded and / or longitudinally folded printed sheets 8 ', 8 "are arranged.

The device 1 has as in Fig. 2 shown on a first side 3 of the paper web 2, a bar-shaped tool carrier 12 arranged transversely or approximately transversely to the running direction T of the paper web 2. This has two spaced apart receiving points 13, to each of which a tool is attached. In the present example, a perforating tool 14, also called a perforating knife, is on the right-hand side and is fixed on the tool carrier 12 with a fastening element 15. On the left-hand side of the tool carrier 12, a cutting tool 16, which is also referred to as a cutting knife or knife, is attached with a further fastening element 15. It is also conceivable that the cutting tool 16 is attached to the right and the perforating tool 14 is attached to the left. The perforating tool 14 is designed as a strip-shaped knife with a cutting edge 17, in which the cutting edge 17 is interrupted at regular intervals. It is also conceivable that two or more perforating tools 14 are fixed next to one another over the length of the tool carrier 12 with one or more fastening elements 15. The cutting tool 16 is also designed as a strip-shaped knife and has a continuous cutting edge 18 so that the paper web can be completely severed in one processing step. Of course, the cutting tool 16 can also be formed from a plurality of cutting knives 16 arranged next to one another in the receiving point 13. At least at the time of cutting, the cutting edges of the multiple cutting knives must be aligned with one another in order to obtain a straight cut of the paper web 2 perpendicular to its running direction T. It is also conceivable that the perforating tool 14 and the cutting tool 16 are manufactured in one piece or that the tool carrier 12 and the perforating and cutting tools 14, 16 are designed as one component. It is also conceivable that only one of the two receiving points 13 of the tool carrier 12 is equipped with a perforating tool 14 or a cutting tool 16 and the other receiving point remains empty during operation.

A rotating cutting drum 21 is arranged on a second side 20 of the paper web 2 opposite the first side 3 and opposite the tool carrier 12. The cutting drum 21 has an axis of rotation 22 oriented transversely or approximately transversely to the running direction T of the paper web and parallel to a transport plane 100 of the paper web 2. The cutting drum is as in FIG Fig. 1 shown schematically with a second drive motor 23 directly or via a belt drive (not shown) or via a likewise Gear drive not shown driven clockwise. The cutting drum 21 has as in Fig. 3 shown on their circumference are two 180 ° offset receiving points 24 for receiving one or more counter tools 25, each with a cutting edge 26. The cutting drum 21 can, however, also have only one or more than two receiving points 24 for counter tools 25. The circumference of the cutting drum with only one counter-tool or the arc on the circumference of the cutting drum 21 between two cutting edges 26 of adjacent counter-tools 25 is chosen so that with a maximum length L of the sides S, the circumferential speed of the cutting drum is equal to or greater than the conveying speed v the paper web. The cutting drum 21 is arranged in relation to the paper web 2 in such a way that the circumference of the cutting drum 21 or a circular path of the cutting edge 26 of the counter-tool almost or completely touches the paper web 2 tangentially.

The tool carrier 12 has an in Fig. 2 shown first working position 30, in which the perforating tool 14 is in a processing position 19 in engagement with the rotating counter-tool 25. In this working position 30, the cutting edge 18 of the cutting tool 16 is spaced apart from the machining position 19 in the horizontal and vertical directions. It would also be conceivable for the cutting edge 18 of the cutting tool 16 to be either only horizontally or only vertically spaced from the machining position 19. The tool carrier 12 can be rotated in a pivot axis 31, which is arranged on the first side 3 of the paper web 2, transversely or approximately transversely to the running direction T of the paper web (2) and parallel to a transport plane (100) of the paper web (2) Fig. 5 machine frame 32 shown. The tool carrier 12 is moved into a second working position 33 by a pivoting movement through a pivoting angle α about the pivot axis 31, which is arranged on the side of the tool carrier 12 facing away from the paper web 2. The in Fig. 4 The pivot angle α denoted by α is approximately 20 °. As already mentioned, the pivot angle α can also be larger or smaller than 20 °, for example between 15 ° and 30 °. Smaller or even larger swivel angles α are also conceivable, but for geometric reasons they should not be smaller than 5 ° and not larger than 90 °.

On the tool carrier 12 is an in Fig. 2 Compensating mass 50 shown attached. As a result, the center of gravity of the tool carrier 12 including the perforating and cutting tools 14, 16 and the fastening elements 15 is shifted in the direction of the pivot axis 31. In the ideal case, the center of gravity lies on the pivot axis 31. The compensation mass 50 can of course be molded directly onto the tool carrier 12 in order, for example, at the same time to increase the rigidity of the tool carrier 12 by the compensating mass 50. Vibrations that occur at high speeds when the tool carrier 12 is pivoted back and forth can be reduced by the compensating mass.

It is advantageous if the axis of rotation 22 of the cutting drum 21 relative to the pivot axis 31 of the knife carrier and thus also relative to the orientation of the cutting edges 17, 18 of the perforating tool 14 and of the cutting tool 16 as in FIG Fig. 7 shown is arranged at an angle β . This ensures that the paper web 2 is severed transversely to its transport direction T with a scissor cut. The angle β is to be chosen to be smaller than 2 °; it is advantageously smaller than 1 °. Due to the small angular offset, the paper web 2 is not processed with a cut that takes place simultaneously over the entire width B, but rather by a cutting area running transversely through the paper web 2, in which a section of the cutting edges 17, 18 with a section of the cutting edge 26 of the counter tool in the Are engaging. This cutting principle is in the EP 1186561 A1 described in more detail.

In the in Fig. 3 The second working position 33 shown is the cutting tool 16 in the processing position 19 in engagement with the rotating counter-tool 25. The cutting edge 17 of the perforating tool 14 is spaced apart from the processing position 19 in the horizontal and vertical directions, as with the cutting tool 16 described above, in the working position 33. If, in an alternative embodiment, not shown, the tool carrier 12 were to move linearly from one working position to the other, the cutting edge 17 of the perforating tool 14 would be in the working position 33 only in the horizontal or vertical direction from the processing position 19, as in the case of the cutting tool 16 described above spaced. The cutting edge 17 of the perforating tool 14 or the cutting edge 18 of the cutting tool 16 are oriented transversely or approximately transversely to the running direction T of the paper web 2 during the cutting process. It is also conceivable that the tool carrier 12 is designed to be displaceable in a linear direction or along a movement path from one working position to the other. In both working positions 30, 33, the processing position 19 is at the point where the cutting drum 21 is tangentially closest to the paper web 2 in an area around this point. The tool carrier 12 can also be brought into a rest position, not shown, which is arranged between the two working positions 30, 33. In this resting position Both cutting edges 17, 18 are vertically and / or horizontally spaced from the processing position 19 and do not touch the paper web 2 on its first side 3.

For executing the pivoting movement of the tool carrier 12 between the two working positions 30, 33 is as in FIG Fig. 2 , 3 and 5 a third drive motor 40 and at least one crank mechanism 41 are provided. The third drive motor 40, designed as a servo motor, in particular as a backlash-free torque motor, is arranged with a holding element 51 on the first side 3 of the paper web 2, upstream of the processing position 19, and is fastened to the machine frame 32. It has a drive axis 42 aligned parallel to the pivot axis 31 of the tool carrier 12. In addition, the third drive motor 40 has a continuous motor shaft 43, which extends on the two opposite sides of the third drive motor 40 in the direction of the drive axis 42 and away from the drive motor. In the following, only the drive connection of one side between one of the two ends of the motor shaft 43 and the tool carrier 12 via the crank mechanism 41 is described. How out Fig. 5 As can be seen, the structure of one side corresponds to that of the other side. To increase the rigidity, the motor shaft 43 can be supported on the machine frame with one or more bearing points (not shown).

A crank 44 is rotatably connected to the motor shaft 43. It has a first axis 45 which is parallel to the drive axis 43 and offset from this by a crank radius r. A push rod 46 connecting the tool carrier 12 and the crank 44 is rotatably mounted at one end on the first axis 45. The other end of the push rod 46 is connected to a bearing point 48 of the tool carrier 12 which has a second axis 47. The second axis 47 is parallel both to the first axis 45 and to the pivot axis 31 of the tool carrier 12. It is advantageous if, in order to reduce undesirable vibrations on the crank 44, an only in Fig. 2 The balancing mass 49 shown is attached or molded directly onto the crank 44.

It is also conceivable that the third drive motor 40 has only one motor shaft 43 protruding from the motor housing on one side and is only connected to the tool carrier 12 via a single crank mechanism 41. It would be advantageous if the third drive motor 40 is arranged in the machine housing 32 in such a way that the single crank drive 41 is connected to the tool carrier 12 approximately in the middle of the elongated extension thereof. Furthermore, it is also conceivable that the third drive motor 40 is not arranged directly on the drive axle 43, but rather a drive wheel arranged on the drive axle 43 drives via a belt or chain drive or a gear drive.

Furthermore, it is also conceivable that the tool carrier 12 is pivoted by the third drive motor 40 via a cam mechanism (not shown) from one working position to the other. In this case, a cam roller that is rotatably fastened on the second axis 47 of the tool carrier 12 could roll on a rotating cam disk which is arranged in a rotationally fixed manner on the drive axis 42 of the third drive motor 40.

It is also conceivable that the third drive motor 30 and the crank drive are arranged downstream of the machining position. In the Fig. 2 The designated bearing point 48 of the tool carrier would then be on the left side of the tool carrier instead of on the right side.

As in Fig. 1 As shown, the second drive motor 23 of the cutting drum 21 and the third drive motor 40 of the tool carrier 12 are connected to a drive control 61 via data lines 60 for the exchange of control signals. The first drive motor 11 of the paper web 2 can also be connected to the drive control 61 via a data line 60. The drive control 61 regulates the speed and the angular position of the drive motors 11, 23, 40. It is conceivable that the drive control 61 is sent a control signal from the first drive 11, on the basis of which a first rough positioning of the second drive motor 23 and the third drive motor 40 takes place . Upstream of the cutting drum 21, there is optionally a sensor 62 aligned with the paper web 2 for reading identification features 101 applied to the paper web. The drive control 61 can control the second drive motor 23 and the third drive motor 40 based on the signals from the sensor 62 in such a way that the paper web 2 is optionally perforated or cut at the desired locations. Of course, the drive control 61 can also control the drive 40 in such a way that the tool carrier 12 is stopped in the rest position.

The method according to the invention for cutting or perforating a paper web 2 at variable intervals is described below. As already mentioned above, individual pages S of printed sheets 8 ', 8 "with different numbers of pages are printed onto the paper web 2 with a digital printing machine (not shown in the figures) on one or both sides. The paper web is then fed to the device 1 according to the invention for optional cutting and perforating , with further processing stations such as deflections, buffer stations, devices for perforating, cutting and folding in the longitudinal direction optional between the digital printing machine and the device 1 according to the invention can be arranged. Alternatively, the printed paper web 2 can be rolled up again onto a roll after printing. The printed roll can then be transported to any location and / or stored. If necessary, the printed paper roll can be fed to the device 1 according to the invention for cutting and perforating via an unwinding station known in the prior art, not shown in the figures, and further optional processing stations described above.

The paper web 2 is fed to the device 1 at a conveying speed v in the transport direction T, the conveying speed v corresponding to the transport speed of the paper web in the digital printing machine or in the unwinding station. If the paper web 2 is guided through a buffer station known in the prior art, in which a certain length of the paper web 2 can be retained, the conveying speeds v before and after the buffer station can also be different. The paper web 2 is at least one in Fig. 1 drive device 9 shown, which transports the paper web with a single or with two counter-rotating drive rollers 10. The drive device 9 can either be designed as an independent station or be part of the digital printing machine or the unwinding station or one of the optional processing stations or part of the device 1 according to the invention.

The pages S printed on the paper web 2 are assigned to individual printed sheets 8 ', 8 "which each have an identical or different number of pages S. In Fig. 1 are on the paper web 2 upstream of the device 1, two, first printed sheets 8 'each with four printed pages S - two pages S on the first page 3 of the paper web 2 and two pages S on the second side 20 - shown. Downstream of the device 1, a second printed sheet 8 ″ with six printed pages is shown, which has just been separated from the end 102 of the paper web 2 by the cutting tool 16 and the counter tool 25 of the cutting drum 21. Downstream of the printed sheet 8 ″ is a further four-sided printed sheet 8 ′. shown, which was separated from the paper web 2 before the printed sheet 8 ″ and which is now conveyed into the area of the sheet processing stations 80.

In the Fig. 1 The four-sided sheets 8 'shown have a single perforation 73 at which they are folded in a sheet processing station 80 designed as a cross-folding device. The sheets 8 ′ are then fed to a stacking device 6, for example, via a further or more optional sheet processing stations 80. The six-sided sheets 8 ″ have two perforations 73, along which they when passing through transverse folding devices of the sheet processing station 80 are folded. Then the folded six-sided sheets 8 ″ as well as the four-sided sheets 8 ′ are fed to a stacking device 6 or to a further conveying or processing station.

With the method according to the invention, the continuously conveyed paper web 2 is either cut or perforated according to the printed sheets 8'8 "with the same or different number of pages S transversely to the transport direction T. The drive motor 23 of the cutting drum 21 and the drive motor 40 moving the tool carrier 12 are connected to the drive control 61. The information about where and at what distance the paper web 2 has to be cut or perforated is transmitted to the drive control 61, for example from the digital printing machine or a higher-level machine control. As an alternative or in addition to this, one on the paper web 2 Visibly or invisibly applied identification feature 101 can be read with the sensor 62. The drive control 61 evaluates the signal from the sensor 62 and determines the exact position where the paper strip 2 is perforated or cut.

The drive control 61, which can also be integrated in the higher-level machine control, determines the diameter of the cutting drum 21, the number of counter-tools 25 evenly distributed on the circumference of the cutting drum 21, the conveying speed v of the paper web 2 and the length L of a printed side S die Speed at which the drive motor 23 drives the cutting drum 21. The drive control 61 also determines the point in time or via the speed and the angular position of the second drive motor 23 when one of the counter tools 25 with its cutting edge 26 must be in the processing position 19 so that the paper web is either perforated or cut in the correct place. If the sides S printed on the paper web 2 have the same length L, the cutting drum 21 rotates uniformly or almost uniformly at a constant speed of the paper web 2.

As in Figure 7a As shown, the device according to the invention with its frame 32 is at a certain angle to the paper web 2. The angle denoted by 0 ° is intended to show that the machine frame 32 is perpendicular to the transport direction T. If the length L of two adjacent sides S on the paper web 2 is different, the drive motor 23 accelerates or decelerates the cutting drum 21 and the peripheral speed of the cutting drum 21 is adapted to a different length L '. This compensates for the difference in length and the cut 74 or the perforation is made at the point provided for it. At the same time, as in Figure 7b the machine frame by means of an adjustment device 90 rotated about a fulcrum 91 by an adjustment angle γ so that the processing of the paper web takes place exactly at a right angle to the transport direction T as a result of the cutting principle described above. Because if the length L 'of a cutting drum 21 with a counter tool 25 is smaller than the circumference of the cutting drum 21 (or with two counter tools 25 is less than half the circumference, etc.), the speed and thus the circumferential speed of the cutting drum 21 must be increased will. As a result, the scissors cut moving from one edge of the paper web 2 to the opposite edge takes place in a shorter time, ie the paper web 2 is transported less far in the shorter time. This difference is compensated for with the adjustment angle γ , so that the cut runs exactly perpendicular to the transport direction T. The angle β required for the scissor cut between the axes 22, 31 of the cutting drum 21 and the tool carrier 12, which are arranged at an angle to one another, is one of the basic settings of the device 1 and is not changed during operation.

At a constant conveying speed v of the paper web 2 and pages S with the same length L, the cutting drum 21 is driven at a constant or almost constant speed. It is advantageous if the circumferential speed of the cutting drum 21 is equal to or greater than the conveying speed v of the paper web 2, even for sides S with the greatest possible length L to be processed. This ensures that the paper web 2 is not compressed on the cutting drum 21 or on the counter tools 25, because compressing the paper web 2 would impair or make precise processing by perforating or cutting impossible. For the drive of the cutting drum 21, it is unimportant whether the paper web 2 is perforated or cut by the device 1, or whether the perforating tool 14 or the cutting tool 16 is in engagement with the counter tool 25 of the cutting drum in the processing position 19.

The drive control 61 also controls the third drive motor 40 of the tool carrier 12. If a as in FIG Fig. 1 The illustrated sheet 8 'with four sides S processed by the device 1 transversely to the running direction T of the paper web 2 is cut alternately one after the other, then perforated and then cut again. The sequence cut 74 - perforation 73 - cut 74 - perforation 73 etc. is repeated as long as sheets 8 'with four sides S are printed on the paper web 2 one after the other. If the following sheets 8 'have sides S with the same length L, the third drive motor 40 can be operated at a constant or approximately constant speed. The one in the Fig. 2 , 3 , 4th and 5 The tool carrier 12 shown is pivoted back and forth by the third drive motor 40 via the crank mechanism 41 about the pivot axis 31, so that it is pivoted from one of the working positions 30, 33 by a pivot angle α into the other. The perforating tool 14 is in the first working position 30, and in the second working position 33 (see FIG Fig. 3 ) the cutting tool 16 engages with one of the counter tools 25 of the cutting drum 21 and perforates or cuts the paper web 2 at the desired location.

The pivot angle α is determined by the spatial arrangement of the drive 40 in relation to the tool carrier 12, by the geometric relationships of the crank drive, in particular by the size of the crank radius r and the length of the push rod 46, by the distance between the pivot axis 31 and the second axis of rotation 47, and determined by the arrangement of the pivot axis 31 and the motor shaft 42. In the two dead centers of the crank mechanism, in which the drive axis 42, the first axis 45 and the second axis 47 are each located in a common plane, the tool carrier 12 stands still briefly in each of the two working positions 30, 33. Firstly, this has the effect that the perforating tool 14 and the cutting tool 16 each stand still while the rotating counter-tool 25 is brought into engagement with one of the two. Second, the arrangement is particularly advantageous because it means that most or all of the cutting forces arising during perforation or cutting are transmitted to the machine frame 32 via the crank drive, via optional bearing points of the motor shaft 43 (not shown in the figures) and via the drive motor 40. An undesired torque due to cutting forces on the third drive motor 40, which would negatively affect the cutting accuracy, the cutting quality and the service life of the tools 14, 16, 25, can thus be prevented in a simple manner. In addition, the third drive motor 40 is more cost-effective because it can be dimensioned smaller than if it had to counteract the undesired torque in order to maintain its precisely defined position. Of course, the processing of the paper web 2 can take place not only in the above-mentioned dead centers of the crank mechanism, but also when the drive axis 42, the first axis 45 and the second axis 47 are not yet or no longer in a common plane. In this case, however, the larger-sized drive motor 40 must compensate for a torque resulting from the machining in the form of a holding torque.

If now with the inventive method an in Fig. 1 illustrated sheet 8 "with six sides S processed by the device 1 transversely to the direction T of the paper web, so is cut once, then perforated twice in a row and then cut again. Thus, with several sheets 8 ″ printed one after the other on the paper web 2, a sequence of cut 74 - perforation 73 - perforation 73 - cut 74 - perforation 73 - perforation 73 etc. is obtained. The tool carrier 12 must therefore not be continuous or as described above in this sequence The third drive motor 40, which rotates almost continuously, can be pivoted back and forth between the two working positions 30, 33. If the paper web is perforated twice in succession due to the printed sheets 8 ″, the third drive motor 40 is briefly stopped by the drive control 61. The tool carrier 12 remains in the first working position 30 until two perforations 73 have been made on the paper web 2. The third drive motor 40 is then accelerated again, so that the tool carrier 12 and thus the cutting tool 16 is in the second working position 33 in good time for the next processing of the paper web 2 with the counter tool 25.

The ones in the Figures 1 , 2 , 3 and 4th The arrangement shown of the cutting tool 16 in the left and of the perforating tool 14 in the right receiving points 13 of the tool carrier 12 has the advantage that the paper web in an in Fig. 4 shown change from the first working position 30 ( Fig. 2 ) to the second working position 33 ( Fig. 3 ) was only perforated and not separated. This is because the movement of the tool carrier 12 counter to the transport direction T could cause the end 102 of the paper web 2 to collide with the tool carrier 12, one of the tools 14, 16 or one of the fastening elements 15 and cause a paper jam. In Fig. 4 a state is shown in which the paper web 2 has just been separated between the cutting tool 16 and the counter-tool 25. While the tool carrier 12 is pivoted counterclockwise from the second working position 33 to the first working position 30, the loose end 102 of the paper web enters the transport device 70. The cutting tool 16 and the perforating tool 14 support the transport by moving in the same direction of the end 102 of the paper web 2 towards the transport device 70. The in Fig. 4 The shown position of the tool carrier could correspond to a possible rest position in which neither of the two tools 14, 16 is in contact with the paper web and processes it. In a preferred rest position, the vertical distances between the blade 17 of the cutting tool 16 and the blade 18 of the perforating tool 14 to the paper web 2 are the same.

In Fig. 6 a paper web 2 is shown, which during its transport in the conveying direction T of an upstream of the inventive device 1 for cutting or perforating arranged longitudinal folding device 75 passes through. The paper web 2 is folded to half its width B by the longitudinal folding device 75, for example with a so-called funnel fold. After the longitudinal folding device 75, the paper web 2 'has two layers. It now has a closed side 76 at the point at which it was folded and an open side 77 opposite. The pages S printed on the paper strip 2 'are assigned either to the first printed sheet 78' or to the second printed sheet 78 ". Since the paper web 2 'has two layers, the first printed sheet 78' consists of four pages S, only the topmost page S being visible. The printed sheet 78 "accordingly consists of eight pages S. A plurality of printed sheets 78 ', 78" printed one after the other in the running direction T onto the paper web 2, 2' each form a book section 79. Before or in the above-described and in Fig. 1 The stacking device 6 shown, the sheets 78 ′, 78 ″ of a book section 79 are connected to one another, for example by the application of adhesive, and further processed together or separately from one another to form brochures or books.

Analogously to the method described above, the in Fig. 6 The four-sided printed sheet 78 'shown here is cut twice in succession by the tool carrier 12 briefly stopping in the second working position 33 before it is accelerated again and moved into the first working position 30. In this first working position 30, a perforation 73 is made on a subsequent printed sheet 78 ″. In the case of subsequent eight-sided printed sheets 78 ″, which have sides S with the same length L, the third drive motor 40 is operated at a constant or almost constant speed. One perforation 73 and one cut 74 are made per revolution of the motor shaft 43 of the drive motor 40. If nothing but two-sided sheets 78 'are printed one after the other on the paper web 2, 2' (not shown), the third drive motor 40 is stopped by the drive control 61. The tool carrier 12 remains in the second working position 33 until the last cut 74 has been made before a perforation 73 that now follows. The third drive motor 40 is then accelerated again by the drive control 61, so that the tool carrier 12 and thus the perforating tool 14 are in the first working position 33 in good time for the next processing of the paper web 2 2 ′ with the counter tool 25.

With the method according to the invention and the device 1 according to the invention, printed sheets 8 ', 8 ", 78', 78" with sides S each having different lengths L can of course also be processed. The drive control 61 regulates the drive motor 23 of the cutting drum 21, the drive motor 40 of the tool carrier 12 and the adjusting device 90 accordingly. The differences in the lengths L from sides S are made by correcting the angular position of the two drive motors 23, 40 between two processing steps, so that each perforation 73 and each cut 74 is made at the intended location on the paper web 2, 2 '. It is also conceivable that a paper web 2, 2 'with printed sheets 8, each of which has more than 2 perforations, are processed. For example, a printed sheet 8 which consists of eight individual pages S can be printed on a single-layer paper web 2, 2 ′. In such a printing sheet 8, three perforations 73 are necessary between the cuts 74 required at the beginning and at the end of the printed sheet. In two transverse folding devices 4, 5 arranged downstream of the device 1, the eight-sided printed sheet 8 is halved in each case. Sheets 8 with more than 3 perforations 73 transversely to the running direction T of the paper web 2, 2 ′ can also be produced, as long as they can be processed with the processing stations arranged downstream.

With the method according to the invention and the device 1 according to the invention, paper webs 2, 2 'with more than two layers can also be processed, the layers being connected to one another, for example, via a longitudinal fold or being loosely placed on top of one another and transported together.

The printed sheets 8 ', 8 ", 78', 78" separated from the paper web 2, 2 'are transferred downstream of the device 1 by the in Fig. 2 , 3 and 4th transport device 70 shown schematically further transported. The upper and lower transport elements 71, 72 of the transport device 70 transport the printed sheets 8 ', 8 ", 78', 78" at the same or slightly higher conveying speed v as the paper web 2, 2 '. As a result of the transport of the printed sheets 8 ', 8 ", 78', 78" in the transport device 70 at the same conveying speed v as that of the paper web 2, 2 ', between two printed sheets 8', 8 ", 78 'is formed immediately downstream of the device 1 , 78 "no gap. When the printed sheets 8 ', 8 ", 78', 78" are transported in the transport device 70 at a slightly increased conveying speed, a small gap is formed between two subsequent printed sheets 8 ', 8 ", 78', 78". Before the printed sheets 8 ', 8 ", 78', 78 '" are separated from the paper web 2, 2', they are temporarily with their leading end already in the area of the transport device 70, while at their trailing end they are still with the Paper tape 2, 2 'are connected. The transport speed v of the transport device 70 can be equal to or slightly higher than the transport speed v de paper web 2, 2 'so that the paper web 2, 2' in the device according to the invention retains the web tension and is not compressed. The press sheets 8 ′, 8 ″, 78 ′, 78 ″ lie in the transport device 70 either on lower transport elements 71 or are clamped between the lower transport elements 71 and upper transport elements 72.

If the paper web 2, 2 'is not to be processed, for example in a setting-up operation, the tool carrier 12 is stopped in a rest position which is located between the working positions 30, 33. The rest position could be as in FIG Fig. 4 look shown, in which neither the perforating tool 14 nor the cutting tool 16 is in engagement with the counter tool 25. The cutting edges 17, 18 of the perforating tool 14 and of the cutting tool 16 are spaced apart from the paper web 2, 2 ′ in the horizontal direction and are spaced apart from the processing position 19 in the horizontal and vertical directions. The cutting drum 21 can also be stopped or continue rotating at a peripheral speed that is reduced or the same as that of the paper web 2, 2 '.

Claims (23)

1. Device for processing a digitally printed paper web (2, 2') that is conveyed continuously through the device, comprising a perforating tool (14) for perforating the paper web (2, 2') transversely with respect to the running direction (T), and comprising a cutting tool (16) for cutting off printed sheets (8', 8", 78', 78") from a downstream end (102) of the paper web (2, 2'), which are each arranged on a first side (3) of the paper web (2, 2') and transversely or approximately transversely with respect to the running direction (T) of the paper web (2, 2'), and comprising at least one mating tool (25) arranged on a second side (20) of the paper web (2, 2') that is opposite the first side (3), characterized in that

   • the device (1) has a common tool carrier (12) for holding the perforating tool (14) and the cutting tool (16),

   • the device (1) has a rotating cutting drum (21) for holding the at least one mating tool (25) and having an axis of rotation (22) oriented transversely or approximately transversely with respect to the running direction (T) of the paper web (2, 2'),

   • the perforating tool (14) and the cutting tool (16) are fixed to the tool carrier (12) at a distance from each other,

   • the tool carrier (12) can optionally be moved into two working positions (30, 33), in which in each case the perforating tool (14) or the cutting tool (16) can be brought into engagement with the at least one mating tool (25) to process the paper web (2, 2').
2. Device according to Claim 1, characterized in that the tool carrier (12) is arranged on a pivot axis (31) that is oriented transversely or approximately transversely with respect to the running direction T of the paper web (2, 2') and parallel to a transport plane (100) paper web (2) such that it can be pivoted to and fro by a pivot angle (α) between the two working positions (30, 33), so that either the perforating tool (14) or the cutting tool (16) can be brought into engagement with the at least one mating tool (21).
3. Device according to Claim 1 or 2, characterized in that the axis of rotation (22) of the cutting drum (21) and the pivot axis (31) of the tool carrier (12) are arranged in a plane that is parallel to the transport plane (100) of the paper web (2) at an acute angle (β) to each other so that, on the principle of a shearing cut, a cutter (17) of the perforating tool (14) or a cutter (18) of the cutting tool (16) can each be brought into engagement with the at least one mating tool (25) only over a portion of its length.
4. Device according to one of Claims 1 to 3, characterized in that the tool carrier (12) is connected via a crank mechanism (41) to a drive shaft (42) of a third drive motor (40) in order to execute the pivoting movement.
5. Device according to Claim 4, characterized in that the third drive motor (40) is formed as a gearless torque motor.
6. Device according to Claim 4, characterized in that the crank mechanism (41) comprises a thrust rod (46), which is connected via a first shaft (45) to a crank (44) arranged on the drive shaft (42) of the third drive motor (40), and via a second shaft (47) to the tool carrier (12).
7. Device according to Claim 6, characterized in that the first shaft (45), the second shaft (47) and the drive shaft (42) of the third drive motor (40) are arranged parallel to one another, and the first shaft (45) and the drive shaft (42) are arranged at a distance of a crank radius (r) from each other.
8. Device according to either of Claims 6 and 7, characterized in that the first shaft (45), the second shaft (47) and the drive shaft (42) of the third drive motor (40) are each arranged in a plane when the tool carrier (12) is located in one of the two working positions (30, 33).
9. Device according to one of Claims 1 to 8, characterized in that the tool carrier (12) can be moved into a rest position between the two working positions (30, 33), in which neither the perforating tool (14) nor the cutting tool (16) is in engagement with the mating tool (21).
10. Device according to one of Claims 1 to 9, characterized in that the cutting drum (21) having the at least one mating tool (25) is driven by a second drive motor (23), the second drive motor (23) being connected to a drive controller (61) for controlling its rotational speed and angular position.
11. Device according to Claim 10, characterized in that the third drive motor (40) and a first drive motor (11) of a drive apparatus (9) for the transport of the paper web (2, 2') are connected to the drive controller (61) .
12. Device according to either of Claims 10 and 11, characterized in that upstream of the cutting drum (21) there is arranged a sensor (62) which is connected to the drive controller (61) and with which an identification feature (101) applied to the paper web (2, 2') can be detected.
13. Device according to one of Claims 4 to 12, characterized in that the cutting drum (21), the second drive motor (23), the tool carrier (12) and the third drive motor (40) are mounted in a common machine frame (32) .
14. Device according to Claim 13, characterized in that the machine frame (32) is designed to be pivotable by an adjustment apparatus (90) with respect to the paper web (2, 2') about a pivot (91) parallel to the transport plane (100) of the paper web (2, 2').
15. Method for processing a digitally printed paper web (2, 2') that is transported continuously through a device (1) in a running direction (T), in which the paper web (2, 2') is perforated or cut between a perforating tool (14) or a cutting tool (16) and at least one mating tool (25), characterized in that the at least one mating tool (25) rotates about an axis of rotation (22) oriented transversely or approximately transversely with respect to the running direction (T) of the paper web (2, 2'), and in that a common tool carrier (12) holding the perforating tool (14) and the cutting tool (16) for processing the paper web (2, 2') is optionally moved into a respective one of two working positions (30, 33) and, as a result, the perforating tool (14) or the cutting tool (16) interacts with the at least one mating tool (25) and perforates the paper web (2, 2') transversely with respect to its running direction T, or cuts off printed sheets (8', 8", 78', 78") from a downstream end (102) of the paper web (2).
16. Method according to Claim 15, characterized in that the tool carrier (12) pivots to and fro by a pivot angle (α) about a pivot axis (31) transversely or approximately transversely with respect to the running direction (T) of the paper web (2, 2') and parallel to a transport plane (100) of the paper web (2) between two working positions (30, 33), and in that in each of the two working positions (30, 33), in which the tool carrier (12) is stationary, the perforating tool (14) or the cutting tool (16) comes into engagement with the at least one mating tool (25) and perforates or cuts the paper web (2, 2').
17. Method according to either of Claims 15 and 16, characterized in that the tool carrier (12) is moved into a rest position between the two working positions (30, 33), in which neither the cutting tool (16) nor the perforating tool (14) is in engagement with the at least one mating tool (25), and in which the paper web (2, 2') is not processed.
18. Method according to one of Claims 15 to 17, characterized in that the continuously transported paper web (2, 2') is alternately perforated by the perforating tool (14) and cut by the cutting tool (16), and in that a third drive motor (40) connected to the tool carrier (12) via a crank mechanism (41) rotates at a constant or approximately constant speed.
19. Method according to one of Claims 15 to 17, characterized in that a plurality of successive identical processing operations of the paper web (2, 2') are performed by the tool carrier (12) being left in the respective working position (30, 33) and the third drive motor (40) stopping.
20. Method according to Claim 19, characterized in that the third drive motor (40) begins to rotate again when, following a plurality of successive identical processing operations of the paper web (2, 2'), the tool carrier (12) is moved from one to the other working position (30, 33).
21. Method according to one of Claims 15 to 20, characterized in that a first drive motor (11) for the transport of the paper web (2, 2'), a second drive motor (23) of a cutting drum (21) holding the mating tool (25), and the third drive motor (40) of the tool carrier (12) are activated by a drive controller (61).
22. Method according to Claim 21, characterized in that signals from a sensor (62) aimed at the paper web (2, 2') are evaluated in the drive controller (61), and the evaluation of the signals influences the activation of the drive motors (11, 23, 40).
23. Method according to one of Claims 15 to 22, characterized in that at least the perforating tool (14), the cutting tool (16) and the mating tool (25) are pivoted jointly with respect to the paper web (2), parallel to the transport plane (100) of the paper web (2), by an adjustment angle (γ), in order to perforate and cut the paper web (2, 2') at right angles to its running direction (T) in the case of different lengths (L, L') of pages (S) printed onto the paper web (2, 2') and/or different widths (B) of the paper web (2, 2').

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