EP2108511A2 - Cut register regulation - Google Patents

Abstract

The method involves providing a folding assembly (2), over which single book strands of a majority of single book strands (HSN) brought together to a total book strand (GHS) are guidable. Information printed on the single book strands are detected, and correction values are determined from the printed information for correcting a crop mark error of one of the book strands. The crop mark error is corrected by an actuator attached to the single book strands. A total crop mark of the total book strand is corrected using detected imprinted information at the total book strand. An independent claim is also included for a web-fed rotary press comprising a folding machine and a folding assembly.

Description

The invention relates to a method for adjusting the cutting register in a web-fed rotary printing press according to the preamble of claim 1, and to a web-fed rotary printing press configured for carrying out this method according to the preamble of claim 20.

In web-fed rotary printing presses, it is known that information printed on the web along the web is detected and, depending on the deviation of a position actual value or actual datum determined from the acquired information, is controlled or regulated by a predetermined setpoint of actuators with which the printing substrate web is acted upon , The aim is to clock the position of the printed image and thus the copy to be produced on the cutting cylinder, with which the copies are cut from the printing material, so set the cut register.

The information printed on the web and recorded with the sensors can be register marks or else the overall print image, in which case the expected time at which the register mark or the entire print image passes by the respective sensor can represent the desired value. In this conventional case serve as sensors optical sensors, such as cameras, photoelectric sensors or the like. As actuators often movable linear rollers are used in linear guides transversely to the direction of the printing material, over which the web path can be extended or shortened. Furthermore, as actuators, the drives of rolls can be used at clamping points, wherein the peripheral speeds (overfeed) of the draw rolls along the paper web serve as manipulated variables of the cut register control.

In most cases, the sensors are provided in the vicinity of the actuators in order to minimize the distance between the sensor and actuator and thus the dead times of the control. Observation or measuring members and actuators may be provided in known devices to the printing units, at the printing units downstream Zugwalzenpaaren or the like. Furthermore, it is known to attach measuring and adjusting devices to the individual strands after a longitudinal cutting device, on which the web is divided into partial webs, which can serve as actuators, for example, the drives of Strangzugwalzen before Former of the folding unit. Another known possibility for observation and adjustment of the cut register is in the area of the folding unit on the angular position of the knife cylinder of the folding unit, which ultimately dictates the tact with which the single strands merged into Gesamtheftstrang be cut into copies, and thus ultimately the overall cut register in the folder ,

As I said, the sensors and the actuators are arranged close to each other in the above-mentioned possibilities usually. However, there are also known circuits, in particular control cascades, in which actuators are actuated under the influence of actual values which have been determined on sensors arranged away from them.

Examples of cut register regulations of the type mentioned can be found in the own applications DE 103 35 888 . DE 103 35 887 . DE 103 35 885 , such as WO 2005 / 016806A1 , Here, a paper web stretch is made by serving as actuators pull rollers before the formers. To this end, Bahnbeobachtungssenoren are provided in the vicinity of the tension rollers, wherein the regulation of the cut register by the peripheral speeds of the draw rolls on the respective single strands and thus by the strain change of the respective single strand in response to the output values of Bahnbeungsungssenoren. In this case, the control takes place in several stages, whereby the cutting position is also measured on the knife cylinder of the folding unit and corrected by the angular position of the knife of the knife cylinder. The serve the Folder upstream measuring and actuation units of elimination of all occurring to the respective measuring location disturbances, whereas the control of the knife cylinder or the Gesamtheftstrang via a linearly adjustable adjusting roller shortly before reaching the knife cylinder to eliminate the cutting register error is used between the last measuring position of the strands and the cutting cylinder arises.

Another generic cutting register control can be found in the DE 199 36 291 A1 ,

On this basis, it is an object of the present invention to provide a cutting register control or adjustment, with the accuracy of the cutting register of the folding unit can be further improved and the total cut register error is further minimized.

This object is achieved with regard to the method having the features of claim 1, with regard to the device having the features of claim 20.

According to the invention, the detection of the printed information of the respective Einzelheftstrangs and the correction of the cut register error of this Einzelheftstrangs is provided, which preferably provided after the passage of the folding structure and before merging the individual stitching to Gesamtheftstrang. However, it would also be conceivable to do this above the former. The invention can also be used with a magazine folding structure as long as the web observation and the corresponding cutting register error correction are carried out on the single stitching strand.

The web-fed rotary printing press according to the invention has, in addition to the folding unit and the folding structure with a plurality of formers, at least one sensor and at least one actuator for each individual stitching strand whose cut register error should be set. The sensor and the actuator are arranged in the folder in a region downstream of the folding structure and the cutting blade cylinder upstream region, ie between the former and cutter blade cylinder. Furthermore, a control device connected to the respective sensor and actuator is provided, which is set up to carry out the method according to the invention.

With the cut register adjustment or regulation according to the invention, a significant improvement in the cutting register accuracy over known cut register controls succeeds. Because in the known cut register regulations is measured at the funnel inlet and the cut register of - possibly superimposed - partial webs set accordingly, and then again at the merged from the single stitching strands Gesamtheftstrang shortly before reaching the cutting blade cylinder of the folding unit, in which case the cutting register position on the cutting blade cylinder can be adjusted , For large hopper arrangements, e.g. With balloon funnels can result due to greatly different paths of the individual stitch strands of the last actuator at the funnel inlet to superimposing the Gesamtheftstrang significantly divergent Schnittregisterfehler the single stitches. With the arrangement according to the invention, it is now possible for the first time to eliminate these different cutting register errors of the individual webs, which result from the folding structure over the different path lengths.

Each Einzelheftstrang this can be scanned with a arranged in the vicinity of the actuator sensor (camera or similar) and with the actuator, preferably a linearly displaceable arranged adjusting roller according to the detected cutting register error (in the case of the adjusting roller on a web length change by moving the adjusting roller perpendicular to the web running direction of the respective single stitching strand). In this case, all strands can be set individually to a predetermined setpoint for the cut register, wherein the setpoint can be preset by the printer based on his experience iteratively or come from a parent production planning software can. In addition, the setpoints can be adapted to the current production conditions. Deviations of the recorded actual values from the preset setpoint value are then registered at the sensor of the respective single-link train, whereupon the actuator assigned to the respective single-link train is correspondingly actuated.

Alternatively, however, one of the individual stitching cords, optionally also the outer stitching cords of the overall stitching strand, could be provided as a reference stitching strand for the other single stitching cords, so that the correction of the further stitching cords takes place relative to this reference stitching strand. The individual stitches are thus all adjustable to the same, serving as a reference value cut register. This cut register error is then present when merging the single stitching strands on all single stitched strands and thus corresponds to the total stitchstep register error and can therefore be eliminated finally on the cutting cylinder.

It is further particularly advantageously provided that actuating signals for at least one of a single-staple strand or the entire staple strand associated, the folding structure downstream actuators are corrected accordingly by pre-recorded, printed on the web or web information. For this purpose, the information, which is known per se, can be used on at least one of the plurality of single stitched strands in the vicinity of hopper infeed rolls, printed on the respective single stitching strand, and / or the information pre-recorded on at least one single strip between a slitter and the hopper infeed rolls, and / or or the information pre-recorded on an entire web before reaching the slitter. In particular, it can then be decided in dependence on the pre-recorded information whether an adjustment may be made to the (or the) the folding structure downstream actuators and / or within which limits such an adjustment may be made.

The advantages arise in particular when, as in conventional methods or printing machines of the generic type already provided on the funnel inlet actuators for the incoming into the funnel individual stitches (additional actuators in the context of the present invention) and corresponding sensors. For as such actuators usually the drives of Strangzugwalzen be used, the peripheral speed (overfeed) can be set with significantly higher dynamics than the length adjustment of the single stitching lines on the there provided rollers. The drive motors of the Strangzugwalzen should be kept at an operating point (a defined standard lead). It is thereby prevented that as a result of an impermissible, lying outside the desired adjustment range adjustment of the adjusting rollers on the individual stitching a return of the lead of the Strangzugwalzen to the operating point (standard lead) is thwarted. As an alternative to the correction of the actuating signals for the individual stitch strands associated, the folding structure downstream actuators by means of the pre-recorded on the respective strand or the respective track information printed position, speed or angle signals of the additional actuators can be used. If the drives of the Strangzugwalzen or other Zugwalzenantriebe in the course of moving towards the hopper structure partial webs or the not yet cut total track are provided as additional actuators, it is also advantageous to adjust the drive of the respective additional actuator only within predetermined limits and always on the operating point or due to a standard lead, wherein a possible deviation from the standard lead is slowly reduced via a regulator upstream of the drive or an actual lead is returned to the standard lead. In this case, a regulating roller which can be displaced linearly can serve as a regulating device, via which a web length change can be brought about, instead of a web stretch via the drive adjustment.

The embodiment described in the preceding paragraph as an advantageous embodiment of the invention can be used in conjunction with the features of the preamble of claim 1 and the features of the preamble of claim 18 to The subject of a separate application are made, in which case the features of the other claims could be formulated as optional subclaims and wherein instead of or in addition to the actuators on the single stitching lines and the control of the drive of draw rollers or the cutting blade in the range of Gesamtheftstrangs according to the pre-recorded, on the web or webs printed information can be corrected.

Figur 1

eine Seitenansicht eines Falzapparats einer Rollenrotations- druckmaschine mit Falzwerk, Falzaufbau und vorgeordneter Wendeeinheit;

Figur 2

eine Stirnansicht des in Fig. 1 gezeigten Falzapparats und Falzaufbaus;

Figur 3

eine schematische Darstellung des in den Figuren 1 und 2 dargestellten Falzapparats und des Falzaufbaus mit einer Schnittregisterregelung gemäß einer vorteilhaften Ausführungsform der Erfindung.

Advantageous developments are the subject of the remaining dependent claims and are explained in more detail below together with an embodiment of the invention with reference to the accompanying drawings. Show it:

FIG. 1

a side view of a folder of a web-fed rotary printing press with folder, folding structure and upstream turning unit;

FIG. 2

an end view of the in Fig. 1 shown folder and folder assembly;

FIG. 3

a schematic representation of the in the Figures 1 and 2 shown folding apparatus and the folding structure with a cut register control according to an advantageous embodiment of the invention.

Fig. 1 and 2 show a folder of a web-fed rotary printing press with a folding unit 3, a folding structure 2 and a front turnaround tower 1.

Folding machines of printing presses serve for the formation of folds on printed substrates, wherein according to the prior art for seaming a web-shaped substrate is usually first passed through a so-called folder hopper so as to form a longitudinal fold on the web-shaped and not yet severed substrate. Starting from the former, the web-shaped substrate is transported over several draw rollers in the direction of a cutter knife cylinder, are separated on the cutting blade cylinder of web-like substrate copies, which are then laterally and optionally additionally folded in the folding unit.

In the illustrated embodiment, the Wendestangenturm 1 is preceded by a longitudinal cutting device 5, with which the total web GB arriving from the printing units (not shown) or intermediate modules (drying, cooling, etc.) is divided into sub-webs, here in sub-webs B1, B2, B3, B4 , or B1, B2, B5, B6. The longitudinal cutting device 5 may be formed as a pair of draw rollers, as in the present embodiment, in addition to an acting on the overall web GB, upstream Zugwalzenpaar 4 is provided.

In the Wendestangeturm 1, the partial webs B1, B2, B3, B4, B5, B6 turned with turning bar packages 18 according to the desired printed products and passed over or next to each other and so fed to the folding structure 2. In the example shown, either the partial webs B1, B2, B3, B4 are guided one above the other and fed via Zugwalzenpaare 6 a double-width Hauptfalztrichter TR1, or only the partial webs B1, B2, the sub-webs B5, B6, however, fed via Zugwalzenpaare 6 half as wide Nebenfalztrichter ,

Between the turning pole tower 1 and the folding structure 2, a linear regulating station 20 is arranged. This contains per passing part of a web of this in the form of a U-shaped loop. With the help of reciprocating regulating rollers For example, the path traveled by the associated partial web B1, B2, B3, B4, B5, B6 can be lengthened or shortened, as a result of which the position of the print job printed on the web can be regulated.

The folding structure 2 contains a plurality of, in the example shown 3 formers TR1, TR2, TRN for producing a continuous Längsfalzes run over the stitching strands HS1, HS2, HSN. A stitching strand HS1 consisting of the superimposed partial webs B1, B2, B3, B4 is guided over the main hopper TR1, and in each case a stitching strand HS2, HSN via the two secondary hoppers TR2, TRN. The funnel lugs are flanked by associated hopper inlet roller pairs 7, which may be preceded by additional pairs of pull rollers 7a. At funnel outlet another train group 8 is provided. The funnel inlet roller pairs 7 and the tension roller pairs 7a exert a tensile force on the stapling strand HS1, HS2, HSN running over the assigned former TR1, TR2, TRN. The funnel inlet roller pairs 7 consist of driven pull rollers.

Subsequently, the single stitching strands HS1, HS2, HSN are fed to the folding unit 3 where they are stacked before reaching a cutting knife cylinder 12 to form a total stitching strand GHS.

The folding unit 3 has a cutting blade cylinder 12, a collecting cylinder 13 and a jaw cylinder 14. Between cutting blade cylinder 12, folding blade cylinder 13 and jaw cylinder 14, the printing material GHS is moved or guided. Other coupled rolls, such as e.g. Perforating rollers are clocked with the cutting blade cylinder 12 and mitzuverstellen within the scope of the invention, when the cutting blade cylinder 12 is adjusted, which can also provide an additive angle setpoint for the drives of the cylinders and belts described below.

To provide a Querfalzes on the basis of the cutting blade cylinder 12 separated copy act cutting knife cylinder 12, folding blade 13 and jaw cylinder 14 together so that when separating a copy of the substrate GHS using a cutting blade of the cutting blade cylinder 12, the separated copy at the top of the sheet held by a puncturing device on the folding blade and is moved with rotation of the folding blade cylinder 13. Of course, other gripping elements than the puncturing devices are conceivable.

As a result, the separated copy is moved to a folding position defined relative folding blade 13 and jaw cylinder 14, wherein when this relative position is reached, a folding blade of the folding blade 13 presses the copy in the folding between open jaws of the jaw cylinder 14, whereas the puncturing the Copy free. The exemplified by the jaw cylinder 14 copy is then moved with rotation of the jaw cylinder 14 and passed to the downstream 3.Falz unit 17 and the Auslegemodul 16.

Overall, therefore, more or less many webs or partial webs B5, B6 or partial webs B1, B2, B3, B4 combined therefrom or individual staple strands HS1, HS2, HSN combined therewith must be combined to form a total staple strand GHS and cut by a common knife cylinder 12 become. As with known cut register regulations, the drive motor of the hopper rollers upstream Strangzugwalzen 7a (not shown in the two side hoppers) is provided by means provided in its vicinity sensors for balancing the accumulated in each Einzelheftstang up there cutting register error as an actuator for each Einzelheftstrang HS1, HS2, HSN. This also applies correspondingly to the total web GB, in which case the draw rollers 4 can be designed as an actuator with a sensor provided close to it. Another known way of correcting the cut register for each single stitching strand HS1, HS2, HSN is to use the linear regulators 20 as actuators. Since these are measures known per se, the sensors are in the Figures 1 and 2 not shown.

The structure of the cut register control in the area of the folding unit, as well as the sequence of the cut register control method for this section of the printing press, however, will be described below with reference to FIG. 3 explained in detail.

In FIG. 3 The funnels T1, T2, TN are shown at the top, it being indicated by the three points between T2 and TN that the cutting register control according to the invention in the present embodiment, although guided on the basis of a structure with three formers T1, T2, TN and 3 respectively via a funnel Single stitches HS1, HS2, HSN is explained. However, the invention is not limited thereto, but can be performed on any number of single stitching strands HS1, HS2, ..., HSN. It is also not necessary to guide each single string via a funnel. Rather, the invention can also be implemented if one or more of the individual stitching strands is guided past the funnels or over a plurality of funnels arranged in several stages. These stitches can come from one or more paper webs.

The single stitching strand HS1 serves in the present embodiment as a reference stitching rod for the other two individual stitching threads HS2, HSN. The cut register error of the single stitching strand HS1, which lies in the combined total stitching strand GHS on an outer side, is detected in the vicinity of the draw rolls 11 located at the cutting cylinder 12 by means of a sensor S1. In order to detect the cutting register errors of the two further individual stitches HS2 and HSN, corresponding optical sensors S2, SN are arranged on a location before the merging of these individual stitching threads HS2, HSN with reference stitching strand HS1. Furthermore, in each case one in the direction of the arrow linearly displaceable adjusting roller V2, VN (actuator) is arranged in the web of the two individual stitching strands HS2, HSN to be set.

The cut register error or position information of the reference string HS1 or corresponding information is sent from the sensors S1A, S1 to a Control device ST transmitted, the cut register error or corresponding position information of the two to be set single stitches HS2, HSN via the sensors S2, SN. From the deviation of the cutting register error (the position) of the individual stitching strand HS2, HSN to be set from the reference cut register error (from the position of the reference stitching strand), control signals are calculated in the control device which are transmitted to the positioning rolls V2, VN or their linear drives To adjust the individual stitches HS2, HSN to be set to the reference value. The resulting cut register error on each of the individual stitches is thus due to the adjusted Einzelheftstrang-Schnittregisterfehler simultaneously the cut register error of Gesamtheftstrangs GHS and is brought over a control of the drives M1, M2 of the cutting blade cylinder 12 and the draw rollers 11 in line with the cutting blade 12, including the control signal S1 corresponding to the signal generated.

Of course, deviations and modifications of the illustrated embodiments are possible without departing from the scope of the invention.

Claims (22)

Method for setting the cut register in a folding unit (3) of a web-fed rotary printing press with a folding structure (2), via which one or more individual stitching strands (HS1, HS2, ...., HSN) of a plurality of individual stitching strands (GHS) can be joined together (FIG. HS1, HS2, ...., HSN) can be guided, characterized in that printed on at least one of the plurality of single stitched strands (HS2, ...., HSN) on the respective Einzelheftstrang (HS2, ...., HSN) Information to be detected from the printed information correction values for correcting the Schnitttregisterfehlers least one of the stitching strands (HS2, ...., HSN) are determined, and the cut register error over at least one of the respective Einzelheftstrang (HS2, ...., HSN) assigned Actuator (V2, ..., VN) is corrected. A method according to claim 1, characterized in that the detection of the printed information of the respective Einzelheftstrangs (HS2, ...., HSN) and the correction of the cut register error of the respective Einzelheftstrangs (HS2, ...., HSN) via the actuator (V2 , ..., VN) after the passage of the folding structure and before merging the single stitching strands (HS1, HS2, ...., HSN) to the total stitching strand (GHS) is performed. The method of claim 1 or 2, characterized in that at the Gesamtheftstrang (GHS) printed information is nacherfasst and an overall cut register of Gesamtheftstrangs (GHS) with the help of printed on the Gesamtheftstrang (GHS) post-printed information is corrected, preferably on the angular position of a Cutting knife cylinder (12). A method according to claim 1, 2 or 3, characterized in that on all individual stitching strands (HS2, ..., HSN) except for one in the total stitching strand (GHS) outer single stitch strand (HS1), but on this outside of the total stitching strand (GHS), printed information is obtained, with reference values being determined from the information collected on the total hemp string (GHS), and the correction values being derived from the information collected at the other individual rows of hemp (HS2, ..., HSN) as a deviation from the Reference values, and the correction of the cutting register error of each Einzelheftstrangs (HS2, ...., HSN) to the respective reference values. Method according to claim 1, 2 or 3, characterized in that information printed on all single stitched cords is detected, reference values being determined from the information recorded on one of the single stitched cords and the correction values being determined as a deviation from the reference values from the information gathered at the other single cordsets, and the correction of the cut register error of the respective single stitch string to the respective reference values. Method according to claim 4 or 5, characterized in that the total register error of the total heel strand (GHS) resulting from a deviation of the reference values from a desired value of the total sectional register of the total stitching string (GHS) is achieved via at least one downstream control element (M2, M1), preferably the Drive (M1) of a cutting blade cylinder (12) of the folding unit (3) is nachkorrigiert. Method according to one of the preceding claims, characterized in that actuators (V2, ...., VN) for correcting the cutting register error of the single stitching string are only applied to those individual stitching lines (HS2, ...., HSN) at which printed information is detected (HS2, ..., HSN) are provided opposite the reference pultrusion (GHS). Method according to claim 1 or 2, characterized in that information printed on all individual stitches is detected and an actuator is provided for each individual stitching strand, the correction values being derived from the deviation of actual values obtained from the acquired printed information from a presettable setpoint of the cut register on a knife cylinder the folding unit are calculated. Method according to one of the preceding claims, characterized in that the cutting register error of the individual stitch strands (HS2, ..., HSN) subjected to a correction is corrected by means of a web length change, for example via a respective actuator (V2, ..., VN), positioning roller movable in linear guides (V2, ..., VN). Method according to one of the preceding claims, characterized characterized in that the cutting register error of the total stitching string is corrected according to a mean value determined from the correction values of the single stitching cords. Method according to one of the preceding claims, characterized in that pre-recorded on at least one of the individual stitching strands (HS1, HS2, ...., HSN) upstream of hopper inlet rollers (7) on the respective Einzelheftstrang (HS2, ...., HSN) information be, and / or at least one partial web (B1, ...., B6) between a longitudinal cutting device (5) and the hopper inlet rollers (7), and / or on a total web (GB) before reaching the longitudinal cutting device (5). A method according to claim 11, characterized in that control signals for at least one of a Einzelheftstrang (HS2, ...., HSN) or the Gesamtheftstrang (GHS) associated, the Falzaufbau (2) downstream actuators (M1, M2, V2, .. ., VN) are corrected according to pre-recorded printed information. A method according to claim 12, characterized in that it is decided in dependence on the pre-recorded information, whether on the Falzaufbau (2) downstream actuator (M1, M2, V2, ..., VN) an adjustment may be made. A method according to claim 11 or 12, characterized in that limits are defined as a function of the pre-recorded information, within which the folding structure (2) downstream actuator (M1, M2, V2, ..., VN) an adjustment may be made , Method according to one of claims 11 to 14, characterized in that on at least one of the individual stitching strands (HS2, ...., HSN) in the region of the funnel inlet rollers (7) an upstream actuator (7, 7a) is provided, and / or on at least one single track (B1, ...., B6) between a longitudinal cutting device (5) and the funnel inlet rollers (7) an upstream actuator (6) is provided, and / or provided on an overall track (GB) an upstream actuator (4) is, and the respective upstream actuator (4, 6, 7, 7a) is set according to its pre-recorded, printed information in its vicinity so that the accumulated register error up to there is corrected. A method according to claim 15, characterized in that as a preceding actuator (5, 6, 7, 7a) driving the hopper inlet rollers (7) or of draw rollers in the vicinity of the hopper inlet rollers (7a) and / or of draw rollers (6) between the longitudinal cutting device (5) and the hopper inlet rollers (7) and / or draw rollers (4) on the total web (GB) before reaching the slitter (5) is provided, and the peripheral speed (lead) of the respective rollers (4, 6, 7, 7a ) are corrected according to the pre-recorded printed information. A method according to claim 16, characterized in that the respective drive (4, 6, 7, 7a) within predetermined limits, for example, +/- 0.03% by a standard lead, for example, 0.05% is controlled around, and a regulating device (20), preferably a linearly displaceable regulating roller, any deviation from the standard advance is slowly reduced or an actual advance is returned to the standard advance. Method according to one of the preceding claims, characterized in that on the Gesamtheftstrang (GHS) in the region of the folding blade (12) imprinted information is nacherfasst and the angular position, overfeed or speed of the folding blade (12) via the drive (M1) of the folding blade (12) be corrected according to the post-recorded printed information. Method according to one of the preceding claims, characterized in that on the Gesamtheftstrang (GHS) in the region of the folding blade cylinder (12) upstream Zugwalzenpaares (12) imprinted information is nacherfasst and the angular position, lead or speed of the Zugwalzenpaares (11) via the drive (M2 ) of the draw roller pair (11) are corrected according to the postprinted printed information. Web-fed rotary printing press with a folding unit (3) and a folding structure (2), via which one or more individual stitching strands (HS1, HS2, ...., HSN) of a plurality of individual stitching strands (HS1, HS2, ..) that can be combined to form a total stitching strand (GHS). .., HSN), characterized in that they are used to carry out the method according to one of the preceding Claims is set up and corresponding sensors (S1, S1A, S2, ...., SN) for detecting and / or pre-detecting and / or subsequent detection of the on the stitching strands (GHS, HS1, HS2, ...., HSN), partial webs (B1, ...., B6) or the total web (GB) printed information, actuators (V2; ...; VN, M1, M2, 7, 7a, 6, 4) for correcting the Schnitttregisterfehlers the respective Gesamtheftstrangs (GHS ), Einzelheftstrangs (HS1, HS2, ...., HSN), the respective sub-orbit (B1, ...., B6) and / or the total web (GB), and one with the sensors (S1, S1A, S2, ...; SN) and the actuators (V2, ..., VN, M1, M2, 7, 7a, 6, 4) connected control device (ST). Web-fed rotary printing machine according to claim 20, characterized in that as positioning members (V2, ..., VN) for the individual stitching strands (HS2, ..., HSN) movable positioning rollers (V2, ..., VN) are provided in linear guides. Web-fed rotary printing machine according to claim 20 or 21, characterized in that at least one of the upstream of the actuators (5, 6, 7, 20) provided drives the hopper inlet rollers (7) or pull rollers (7a) in the vicinity of the hopper inlet rollers (7) and / or of draw rollers (6) between the longitudinal cutting device (4) and the funnel inlet rollers (7) and / or of draw rollers (5) on the total web (GB) before reaching the longitudinal cutting device (4) is preceded by a regulating device (20), preferably as a linearly displaceable Regulating roller is formed.

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