EP2181060A1

EP2181060A1 - Crop mark controller in a funnel assembly and method for controlling crop marks

Info

Publication number: EP2181060A1
Application number: EP08761099A
Authority: EP
Inventors: Burkard Otto Herbert
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2007-08-21
Filing date: 2008-06-17
Publication date: 2010-05-05
Anticipated expiration: 2028-06-17
Also published as: WO2009024371A1; DE102007039372B4; CN101678978B; US8047133B2; US20100132572A1; EP2181060B1; ATE536326T1; CN101678978A; DE102007039372A1

Abstract

A cut-off register controller is usable in a longitudinal fold forming assembly of a rotary cylinder printing press that is provided with at least one form folding assembly plane which consists of two adjacently defined longitudinal fold formers. The web ribbon or the partial web ribbons, which are longitudinally formed and folded by the formers are collated at an exit of the former assembly by the operation of a roller pair and are formed into a combined ribbon. That combined ribbon is then fed into a folding apparatus. A number of control circuits are located downstream of the formers and corresponding, in number, to at least the number of formers. The control circuits are usable for controlling the cut-off register of the printed web. Each control circuit has at least one detector and one adjusting member which is usable to adjust the distance between the web or stand and the former.

Description

description

Cut register control in a hopper structure as well as method for cutting register control

The invention relates to a cut-off register control in a hopper structure and to a method for cutting-edge control according to the preamble of claim 1 or 15.

EP 1 074 501 B1 discloses a cutting register control of strands of a plurality of former hoppers, wherein deviations measured on the strand by means of detectors, together with values measured for the individual webs in front of the hopper, are guided on single-web control elements arranged upstream of the hoppers.

In DE 39 35 614 A1 a register device is disclosed, wherein each not yet merged to the strand sub-orbit is assigned a separate control loop and the two strands to be formed from a former control circuits independent, but common to both strands control loop.

From DE 103 07 202 A1 discloses a funnel construction with a number of n funnels and vorteihafter execution at least n-2 a distance of strands influencing actuators disclosed.

DE 195 06 774 A1 discloses a printing machine, wherein before the hopper structure each double-width web one of the entire web and a partial web associated Bahnweglängen compensation means are provided. Reference marks applied by magnetization devices can be detected by sensors for magnetically detecting these marks in a strand formed after the funnel assembly, and used to control the web path length compensation devices. The invention has for its object to provide a cutting register control in a funnel structure and a method for cutting register control.

The object is achieved by the features of claim 1 and 15, respectively.

The advantages which can be achieved with the invention are, in particular, that the high demands on the cutting register, in particular in the case of thick side products formed from several strands, can be quickly adjusted and / or maintained even under unsteady operating conditions.

Especially when starting the machine, z. As in the pressure-on-sites and the subsequent startup on production speed, significant amounts of waste can be saved. Even with automatic role changes and the possible changes in the paper property and / or the changes of parameters in the printing unit can be quickly adjusted by the most possible downstream downstream individual control loops. Compared to systems which use the Einzelbahnstellglieder this, on the one hand, there is a considerably shorter reaction path, and on the other hand, each control loop undisturbed satisfies the associated control task. Third, strands can be adjusted in a simple manner, which consisted of partial webs of different tracks.

In advantageous embodiments - in a further development of the cut register control or separately considered as monitoring device - the signals can be arranged on both sides of a same strand - and in particular lying on a same path section - detectors with regard to possibly present strand running problems, such as huts, beads and / or bubbles, and / or evaluated the signals of a detector directed at the strand on individual track cracks external layers, and if appropriate appropriate measures are initiated. Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it:

Fig. 1 is a schematic representation of a first embodiment of a printing machine;

Fig. 2 is a schematic representation of a second embodiment of a printing machine;

3 shows a first embodiment of a cutting register control in a funnel structure;

4 shows a second embodiment of a cutting register control in a funnel structure;

5 shows a third embodiment of a cutting register control in a funnel structure with a two-sided measurement on the strand;

6 shows a fourth embodiment of a cutting register control in a funnel structure;

7 shows a fifth embodiment of a cut-off register control in a funnel structure with a transfer of a partial string;

8 shows a sixth embodiment of a cut-off register control in a hopper construction with a transfer of a partial string and double-sided measurement;

9 shows a seventh embodiment of a cut-off register control in a hopper construction with a transfer;

10 shows an eighth embodiment of a cutting register control in a funnel construction with a transfer of a partial string;

1 shows a ninth embodiment of a cutting register control in a funnel construction with transfer of two partial strands;

12 shows a tenth embodiment of a cutting register control in a funnel structure with two funnel planes;

Fig. 13 shows an eleventh embodiment of a cut-off register control in a hopper structure with a funnel plane having three funnels;

14 shows a twelfth embodiment of a cut-off register control in a funnel structure with a funnel plane having three funnels;

Fig. 15 shows an embodiment of a web break detection;

16 shows a further embodiment of a web break monitoring;

FIG. 17 shows a schematic representation of the measuring principle of the web break monitoring; FIG.

Fig. 18 is a view according to FIG. 17 with a cracked outer layer.

1 and 2 show by way of example in plan view embodiments of a printing machine designed as a web-fed rotary printing machine, in particular a newspaper printing press. The printing press has at least one printing unit 01 with a plurality of, in particular stacked, printing units, in which a web 02 originating from a roll changer 06, for example, is printed on both sides in multiple colors. Forming and transfer cylinder 03; 04 of, in particular as a printing tower with at least eight (eg on both sides in each case four) pressure points executed printing unit 01st have an effective bale length, which is at least four, z. B. four or six juxtaposed printed images of stationary newspaper pages or at least four juxtaposed printed images of horizontal printed pages, eg magazine pages, correspond in tabloid format. When printing, the forme cylinder 04 then has on its lateral surface, for example, one or more printing forms with a total of four printing images of corresponding printed pages in tabloid or newspaper format.

After printing, the web 02 passes through a so-called. Superstructure 07, in which they are longitudinally cut by a longitudinal cutting device 08 in partial webs, about possibly provided turning devices 09 z. T. laterally offset and brought to another flight, possibly aligned register means 1 1, the partial webs aligned relative to each other in the longitudinal direction, and finally folded in a funnel structure 12 into strands, and these strands then a cross cutter 13, z. B. the cross-cutting device of a folder 14 are fed (Fig. 3).

In Fig. 1 and 2 schematically two advantageous embodiments for the preparation of the above components are set forth: In the embodiment of FIG. 1, the funnel assembly 12 is arranged in the machine alignment and in principle after leaving the printing units 01 by "straight run" of the tracks 02 and In the case of partial webs to be turned, the turning device 09 or the turning devices 09 is preceded by at least one longitudinal cutting device 08. In the event that none of the partial webs have to be turned, the longitudinal cutting device 08 or additionally an optional longitudinal cutting device 08 can be used directly In the embodiment of Fig. 2, the hopper assembly 12 is rotated 90 ° with respect to its projected into the horizontal direction of curvature for machine alignment and after leaving the printing units 01 by an angular web over a turning bar a Wendeeinrichtun g 09 reachable. In the case to be used partial webs of the turning device 09 or the Wendeeinrichtungen 09 at least one longitudinal cutting device 08 upstream. In the event that a turning bar is provided with an effective length, which in projection onto the incoming web 02 at least the width of a maximum to be printed web 02, z. B. four or six juxtaposed printed pages in horizontal tabloid or standing newspaper format (broadsheet) corresponds, said longitudinal cutting device 08 or an additional, optional optional longitudinal cutting device 08 can be arranged directly in front of the hopper inlet, so after turning.

The funnel structure 12 has in each of the embodiments at least one funnel group with a plurality, in particular two or three, juxtaposed folding funnels 16; 17; 18 on a same funnel level. The term "at the same level" here means that the funnels 16, 17 of this funnel plane are located in a same machine plane and / or are at least cut by a same horizontal plane in addition to the main cutting line through the said longitudinal cutter 08 can be directly upstream The sheet formers 16, 17 or also directly after the formers 16, 17 longitudinal cutting means 19 are provided, which longitudinally cuts the part webs in the alignment of the seam back with a funnel center section at so-called side cutting lines (Figure 3) Layers of the main cutting lines from the longitudinal cutting device 08 and the auxiliary cutting lines from the longitudinal cutting device 19 can structurally also be arranged as a common longitudinal cutting device arranged directly in front of the funnel inlet g 08, 19 be summarized.

Does the press as in the present case a plurality of formers 16; 17; 18 and thus several resulting strands 21; 22; 23, which are to be summarized before or during running into a further processing stage and to be cut transversely (FIGS. 13, 14), then, owing to the printed images to be superimposed on one another A correct relative position of the strands 21; 22; 23 viewed in the longitudinal direction a decisive quality criterion in the finished product. In particular, in fluctuating or changing operating conditions - as it occurs, for example, when starting up the machine and / or material change (other paper) and / or production change (changing number of Teilbahnlagen and / or changing the printed image) - may be due to the associated changes in the web tension and / or the elongation the relative longitudinal orientation, and thus also the cut register of the strands 21, 22; 23 to each other change. Second, there are funnel structures 12 with a plurality of strands 21, and thus deflections. 22; 23 the risk of errors associated with the redirecting and conveying, z. B. displacements of individual outer layers of individual strands 21, 22, 23, or third, even the risk of web breaks of outer layers of individual strands 21, 22, 23rd

In the following embodiments of funnel structures 12 - depending on the level of expansion - the three o. G. Problems solved individually, in groups or all together.

According to the embodiments, on the web path downstream of the former 16; 17; 18 (16 ', 17') several control loops RO; R1; R2; R3; Rf; R2 ';3a; R 3b; 4a; R 4b; (R5;) R1 1; R22; R33; R55, in particular at least one of the number of formers 16; 17; 18 (16 ', 17') of the funnel structure 12 corresponding number of control loops RO; R1; R2; R3; Rf; R2 ';3a; R 3b; 4a; R 4b; (R5;) R1 1; R22; R33; R55 (R0 ... R55 for short) and / or at least one of these number of funnels 16; 17; 18 (16 ', 17') corresponding number of actuators SO; S1; S2; S 3; s3b; S4a; S 4 b; S5 (in short: S0 ... S5) and / or at least one of these number of funnels 16; 17; 18 (16 ', 17') corresponding number of detectors DO; D1; D2; D3; df; D2 ';D3;D33;D4a;d4b;D5;D33; D55 (short: D0 ... D55). Preferably, at least one of the number of funnels 16; 17; 18 (16 ', 17') corresponding number of control loops R0 ... R55 on each one of other control loops R0 ... R55 independent actuator (S0 ... S5). This ensures that, on the one hand, the ultimately resulting total strand 24 can be aligned correctly with the knife, and, on the other hand, the strands 21, 22, 23 can be aligned relative to one another without complicated dependencies. The control circuits R0... R55 are preferably designed to be logically independent of register devices 1 1, possibly provided upstream of the funnel structure 12.

The control circuits R0... R55, which concern the cutting register, are preferably control circuits operating independently of one another in their logic - if appropriate, except for an optional signal connection in the case of an actuator RO on a strand bundle or the total strand 24, such as, for example. in the embodiment of FIG. 3 or 7.

It is particularly advantageous if the detector D0 ... D55 of a strand 21, 22, 23 or partial strand (21.1, 21.2, 21.3, 22.1, 22.2, 22.3) are as short as possible in front of the location of the strand path is arranged downstream of one or more other strands 21, 22, 23 or sub-strands (21.1; 21.2; 21 .3; 22.1; 22.2; 22.3). Preferably, the detector D0 ... D55 is between the location of merging, eg Roller 26 or a pair of rollers 26 or a transfer roller 28, and the upstream upstream upstream guide element, for. In the case of transferred sub-strands (21.1, 21.2, 21.3, 22.1, 22.2, 22.3), the detector D0... D55 may also be located downstream of the point of merging on the sub-strand (FIG. 21 .1; 21.2; 21.3; 22.1; 22.2; 22.3) (eg FIGS. 9 and 10). In an advantageous embodiment, all measured values for the strands, z. B. both for strands 21, 22, 23 by detectors D0 ... D55 removed, which are arranged on the respective last section before a downstream of the funnel structure 12 last place of merging. Fig. 3 to 1 1 show embodiments with a two formers 16; 17 having funnel plane, wherein on the funnel structure 12 accumulating tracks 02 upstream in partial webs cut longitudinally, and via the formers 16; 17 led to strands 21; 22 folded or - in the case of a funnel center section - are laid on top of each other as a one-side partial web strip.

In Fig. 3 are downstream of the former 16; 17 now two control loops RO and R1 provided, wherein in this first embodiment one of the individual strands 21; 22 a detector D1 and an actuator S1, and in addition the total strand 24, a detector DO and an actuator SO is assigned. The total strand 24 associated actuator SO is in this case preferably designed as a means which changes the relative rotational angle position of the cross cutter 13 with respect to a current, correlating with the position of the forme cylinder 03 desired angular position or the strand position with respect to their longitudinal direction. This may be a corresponding gear or an axially relatively movable helical gear on the drive train, or - especially in the case of a mechanically independent of the printing unit 01 drive - a correction value in a control means, which counteracts the cross cutter 13 with a determined the total strand 24 cut register error. In the case of independent drive via an electronic, z. B. virtual, leading axis, the setpoint formed from the rotating angular position setpoint of the leading axis, a corresponding, the cut register deviation corresponding correction in the relative angular position can be switched. The one of the two strands 21, which are ultimately to be recombined. 22 associated actuator S1 is as a the path length between funnel tip of the respective former 16; 17 and the location of merging the strands 21; 22, z. B. a roller 26 or advantageously a roller pair 26, in particular a positively driven train group 26, influencing guide element S1 formed. In the present case, this is embodied as a roller S1, eg register roller S1, mounted on a lever so as to be pivotable about a pivot axis parallel to the axis of rotation. However, it can also be moved in another way, z. B. linear movable actuator S1, eg register roller S1, be provided. The actuator S1 is adjustable by a drive, not shown, via an associated control according to a signal resulting from the control loop R1. This is also advantageous on behalf of the following actuator S2; S 3; s3b; S4a; S 4 b; Apply S5. As shown in FIG. 3, in the case where the strand 21, which is to be controlled with respect to the cut register, is formed; 22 a control loop R1 is associated with only one, directed to one of the two side surfaces or outer layers detector D1, this is advantageously directed to that side or outer layer, which with the surface of the directly upstream (partially) looped roller, z. As the actuator S1, is in touching contact - hereinafter also called "inside" .This is to be transferred to other examples.

In an embodiment according to FIG. 4, instead of the control loop RO allocated to the main line 24, each of one of the former 16 is now in the process of being displaced. 17 (18) -derived strands 21; 22 a control loop R1; R2 with detector D1; D2 and actuator S1; S2, in particular register roller S1; S2, assigned. Thus, by adjusting both actuators S1; S2, a correction of the position of the total strand 24 to the position of the knife of the cross cutter 13, and by adjusting one of the two actuators S1; S2 or by different adjustment of the two actuators S1; S2 is a relative position of the strands 21; 22 be corrected.

Fig. 6 shows an embodiment wherein the two strands 21; 22, a control loop R1, R2, and in addition to the total strand 24 a separate control loop RO is assigned. In this embodiment can be corrected by the control loop RO in faulty position of the total strand 24; There are unnecessary and / or unnecessarily large travel paths in the strands 21, 22 and the associated control circuits R1; R2 avoided.

In an advantageous embodiment of the control circuits R1; R2 (R3, etc.) are this or a Part of this, as exemplified in Fig. 5 for control loop R1 and R2 (indicated as R1 1 and R22), with two detectors D1; D1 1; D2; D22, ie in each case with a detector D1; D1 1; D2; D22 per outer layer or strand side of the respective strand 21; 22 formed. There is a monitoring of the two outer layers of the respective strand 21; 22. This allows greater accuracy in detecting the error. In an evaluation 27 is z. B. by averaging or with the help of another mathematical method (eg weighted averages) the position of the strand having a certain thickness 21; 22 monitors and from the result, if necessary, a corresponding actuating signal to the actuator S1; S2 given.

In another application or in further education o.g. Application takes place with this monitoring device on both sides monitoring the strand 21; 22 on smelting or blistering. Both sides are checked for agreement with the pattern specified for the correct position. The two sides deviate differently from the default or deviate only one side, i. with shifted relative phase position, this results in a difference in the deviation. From a certain height in this difference, a reaction is triggered. In this case, for example, only a warning can be displayed, or a manipulated variable - e.g. the lead of a roller - can be changed.

In an advantageous embodiment of the funnel structure 12, this is with transfer devices 28; 29, z. B. rollers 28; 29 formed for strand splitting and / or strand mixture. Here is a funnel center section for the webs 02 of the strands 21 to be divided; 22 provided - a splitting and / or mixing of the strands 21, 22 or of partial strands (21.1, 21.2, 21.3, 22.1, 22.2, 22.3) from different formers 16; 17 (18) possible to z. B. a variable "book design", ie an increased variability in number of layers and / or order and / or assignment without additional turning to achieve.Here can in one or more of the strand paths one only in Fig. 7 by way of example illustrated stapler 31 may be provided, through which one of a former 16; 17 (18) coming sub-string 21 .1; 22.1 together with the other from the former 17; 16 (18) incoming strand 22; 21 or sub-string 22.2; 21.1 can be performed.

The arrangement of one or more staplers 31 on one or more of the strand paths -. B. a stapler 31 on Strangweg of reinforced by the sub-strand 21 .1 strand 22 and / or a stapler 31 on Strangweg of the sub-strand 21.1 reduced strand 21 .2 and / or a stapler 31 on a strand path of a partial strands 21.1; 22.1 from two formers 16; 17; 18 formed strand 32 (eg, Fig. 1 1, 12) - was not always explicitly mentioned or shown in these variants in the following examples, but in accordance with the product design advantageous variants in each case to apply to the statements accordingly.

In Fig. 7 to 1 1 are embodiments of the possibility of a strand splitter and / or strand mixing give. The transferred strand 21.2 represented in the example can, as indicated by the parenthesized expression (21), also be a completely transferred strand 21 (22) in alternative operation.

In Fig. 7 and 8, in each case in addition to the two the strand paths of the strands 21; 22 associated control circuits R1; R2 or R1 1; R22 associated with its own control loop R3 or R33 for the decoupled sub-string 21.1. The "one-sided" or "two-sided" control loops R1; R2 or R1 1; R22 in Figs. 4 and 5 is to be applied accordingly. In the embodiment for splitting and / or mixing are below the formers 16; 17 at least two transfer devices 28; 29, z. B. rollers 28; 29, provided, via one of the roller 29 umschlingender sub-strand 21.1 divided from the remaining sub-strand 21.2, and deflected over the other roller 28 again and with a strand 22 or sub-strand of the other former 17; 16 merged becomes. In order to check and, if necessary, correct the cutting register position of the decoupled sub-string 21 .1, the control loop R3 or R33 ("single-sided" or "double-sided", see above) assigned to this decoupled sub-string 21 .1 is provided with one or two detectors D3 ; D33 and an actuator S3a; S3b provided. In the illustrated case, the actuator S3a; S3b correspond to the transfer roller 29, which is formed in this case as movable in the above type register roller. In order to provide a better overview, in FIG. 7 to 16 it is no longer all the repetitive parts of the figures that are identified by reference numerals. By maintaining the symbolism, however, these are always recognizable.

FIG. 9 shows a variant of the embodiment according to FIGS. 7 and 8, wherein the control loop R3; R33 of the decoupled sub-string 21.1 on the transfer path no detector is assigned, but only after merging of this sub-strand 21.1 that side of the resulting strand 22.3 is detected, which is formed by the sub-strand 21 .1. Here, as shown on the inside of the resulting strand 22.3 directed detector, z. B. the detector D1 of a formerly two-sided control loop R1 1, are used. In dashed line shown variant, the signal of the internal detector D1 of a two-sided control loop R1 1 both the control circuit of the decoupled sub-string 21 .1, and the two-sided control circuit R1 1 of the strand 22 are supplied. In FIG. 10, the state of FIG. 9 is an example of the extraction of a partial strand 22.1 from the strand 22 of the other former 17; 16 set out. The examples of FIGS. 7 and 8 are to be transferred in the same way to the opposite case.

Fig. 1 1 shows a further embodiment with a transfer means 28; 29, in each case via rollers 29 a sub-strand 21.1; 22.1 decoupled, and are summarized by rollers 28, the two sub-strands to a strand 32 or are. The remaining (residual) strands 21 .3 and 22.3 are controlled in accordance with FIG. 3, 4 or 5. The two decoupled partial strands 21.2 and 22.1 are respective Control circuits R4a and R4b associated with one actuator S4a and S4b and at least one detector D4a and D4b. In the event that the transfer devices 29 would again be formed simultaneously as actuators, as in FIG. 7, the detectors are arranged on the transfer paths. In the illustrated variant, however, the transfer devices 28 simultaneously represent the actuators S4a and S4b, so that the detectors D4a and D4b are arranged on both sides of the resulting strand 32. Depending on the production requirements, it can advantageously again be a stapling device on each of the paths of the three strands 21 .3; 22.3 and 32, or merely in the path of the middle strand 32, or in addition to the middle at one of the other two strands 21 .3; 22.3, or only at the two (residual) strands 21 .3; 22.3 be provided.

In Fig. 12 is an embodiment of the funnel structure 12 with two each more, here two formers 16, 17, 16 '; 17 'side by side, mutually offset in the vertical direction funnel planes. That to the strands 21 and 22 and the different embodiments for the design and arrangement of control loops RO; R1; R2; R1 1; R22 for the "normal operation" without mixing or splitting is to be applied individually to the strand guides of the strands 21, 22 and 21 ', 22' of the two hopper levels of a funnel plane of the preceding embodiments one or more of the upper strands 21 'and 22' are deflected as a whole and passed between the lower formers 16, 17 (18) For the strands 21, 22 of the two lower formers 16, 17 are in an advantageous, not shown embodiment under appropriate Use of unillustrated transfer devices the embodiments with decoupling of sub-strands 21 .1; 22.1 according to the examples of Fig. 7 to 10 to apply.The same applies to the strands 21 'and 22' of the upper funnel group.Here, depending on the arrangement of the sub-strands 21.1; 22.1; 21.1 ';22.1' acting on the sub-strands 21.1, 22.1, 21.1 '; 22.1 'directed detectors to arrange as in the embodiments described above. In the event that one of the upper strands 21 '; 22 'not outside, but between the lower formers 16; 17 is passed, then the relevant control circuit FM '; R2 'is assigned a detector Dx' or Dy 'arranged on the path extending between the funnels. These detectors Dx 'and Dy' can in the case of strand division of an upper strand 21 '; 22 'also for the corresponding control circuit R3a'; R3b '; R4a '; R4b 'be used. Although only the "one-sided" control circuits are shown in Fig. 12, the control loop RO indicated by dashed lines may optionally be provided in addition to or instead of one of the string-related control circuits (see corresponding to Fig. 3 to 6).

In Fig. 13 to the embodiments with two juxtaposed formers 16; 17 or 16 '; 17 'exemplified on a funnel group with three juxtaposed formers 16; 17; 18 based on two-sided control loops (RO) R1 1; R22; R55 shown. The variant not shown here with respect to unilateral control loops and / or the embodiment with means for strand division or strand splitting and / or the arrangement of one or more staplers and / or the arrangement of two funnel planes with then three formers is correspondingly applied according to the above embodiments.

Fig. 14 shows in a further variant of an embodiment with three juxtaposed formers 16; 17; 18, wherein, however, in addition to the roller 26 and the roller pair 26, a roller 33 or a pair of rollers 33, in particular Zugwalzenpaar 33 is provided, on which or on which two of the three strands 21; 22; 23 can be summarized before they are combined downstream with the third strand 22. In Strangweg between the merging of the two strands 21; 23, a stapler 31 may be provided. In principle, instead of or in addition thereto, a stapling apparatus can be arranged on the strand path of the third strand 22. The above-mentioned embodiments for the formation as a one- or two-sided control circuits and / or the execution with means for strand division or strand splitting and / or the arrangement one or more staplers and / or the arrangement of two funnel planes with then three formers is accordingly apply according to the above explained embodiments.

In the illustrated examples, the cross cutter 13 is a part of the hopper assembly 12 downstream folding apparatus 14 and is formed by a cooperating with a knife cylinder 37 transport cylinder 38, which in turn cooperates with a jaw cylinder 39 to form a transverse fold. However, the cross cutter can also be formed in other ways, and be formed with or without downstream folding.

The control circuits mentioned above and below are preferably based on the following procedure:

As a result of the geometric distance between the respective detector D0 ... D55 and the location of the cross-cutting, the phase of a point corresponding to the printing length of a point or a feature to be considered on the web or the strand in stationary operation in a fixed relationship. The desired phase position, which can be determined, for example, by geometric evaluation or empirically (eg when the machine is put into operation or during a test run of a production), is characterized by the fact that, in the case of this specific desired phase position, between the considered feature (or a pattern) and a cyclic cycle of the Querscheideinrichtung the cut downstream at the desired location on the web or strand takes place. In steady-state operation and / or without the different influences during the printing process on the substrate paper or the different properties of different paper types, it would thus be sufficient to adjust the actuators only for a certain production with certain strand guides, without this would require a rule.

However, with changing operating conditions - such as changing humidity and / or amount of ink, changing transport speed, changing paper types, etc. - varies the paper stretch and thus the relative to a certain path section position of the desired cutting line. This has now shown that the relative phase angle between the detected feature (or pattern) and the stroke of the cross cutter changes. The relevant control circuit is now designed such that the deviation from the desired phase position is registered, and the associated actuator is acted upon in such a way that the deviation in the phase position is counteracted.

Especially in funnel structures with multiple formers and possibly several funnel planes are long and z. T. multiple deflections having strand paths the result, which must ultimately be aligned correctly when summarizing all together, and in addition to the cross-cutting device. In this case, different strand paths can be subjected to different fluctuations. To be able to meet the high requirements without high start-up waste, in particular during startup of the machine in such Mehrtrichtersystemen under unsteady conditions, the control circuits are provided as set forth in the embodiments. Ideally, the detectors viewing the strands are arranged as far downstream as possible in the strand path, ie as close as possible to the knife of the cross cutter.

The o.g. Control loops R0 ... R55 are preferably based on optical measuring methods, i. The detectors D0... D55 are preferably designed as optical detection devices which are directed onto the respective strand surface and detect the light reflected therefrom.

In a simple embodiment, the detector D0 ... D55 has a measuring head, also called a cutting register measuring head, which has a light-sensitive sensor (eg one or more photodiodes). An additional illumination source can be provided. The photosensitive part of the measuring head is, for example, via a suitable optics - scanning selectively or a region of small diameter - directed to the surface of the strand and thus scans a more or less wide strip on the passing strand. The assigned evaluation can z. B. continuously record the caused by the print image bright-dark pattern, which is then compared with the pattern of the target phase position. The phase position (or a "snapshot") for the phase position of a specially applied for this measurement periodically recurring pattern (eg a brand) or a light-dark pattern from the periodically recurring print image - or certain features of this pattern - is then with the target phase position of the pattern or the corresponding feature of the pattern compared, and counteracted in deviation from the desired relative phase position of this deviation as described above by the relevant control circuit with the actuator.

In the case of an embodiment of the measuring head with a plurality of independently readable sensor areas, d. H. the possibility of a spatial resolution, can also be advantageous in terms of the clock of the cross cutter triggered snapshot, which is compared in the evaluation of the controller with the pattern of the setpoint phase position. The sensor areas are then formed, for example, photodiodes.

In the o.g. In an advantageous variant, the print image (or the pattern) and / or a design of the sensors D0 ... D55 which are scanned are arranged so as to be movable transversely to the line running direction, since only a narrow strip is detected on the passing print image , it is advantageous to be able to adapt the detector D0 ... D55, for example, to the position of the marks or to the position of a suitable printed image strip during production with varying web widths and therefore strand widths and / or with different print images.

In a more comfortable version of the detector D0 ... D55 this is as an image sensor, z. B. as a CCD chip or as a CMOS chip formed. In particular, the Detector D0 ... D55 as a sensor have a line camera or an area camera. In particular, the -. B. formed as an image sensor or at least as a line scan detector D0 ... D55 be designed as a print image at least on a significant scan width detecting sensor. Significant scanning width here means a width which, for example, amounts to at least a quarter of the maximum strand width to be produced in the machine and the funnel structure. In a further improved embodiment, the scanning corresponds to at least half of this strand width and covers z. B. from the center of the strand from half the strand width. In this way, the detector D0 ... D55 can be fixedly arranged in a simple design.

The pattern to be observed (mark or printed image detail) and / or the desired phase position of this pattern can be advantageously carried out using data, in particular image data from the prepress. In particular, it may be advantageous to determine the position of a strip to be detected with respect to a direction transverse to the strand direction, and, in the case of the laterally movable detector, to align it accordingly. When viewing an image area through a surface or line camera, the print image section to be considered (in the transverse and / or longitudinal direction) can also be determined via the prepress. In the prepress stage, the distances of the characteristic patterns intended for evaluation are known at the cutting edge and can therefore be used to form the desired phase position and / or for the lateral adjustment of the detector D0... D55.

In an advantageous in connection with the preceding embodiments of Figures 2 to 14, but also considered by itself advantageous embodiment, at least one strand 21; 22, but preferably each of a former 16; 17 (18) incoming strand 21; 22 at least on one side, in particular at least on the "inner side" particularly vulnerable to web breakage of a single layer, a detector D1, D2 and an evaluation device 34. The latter is designed to record a signal recorded by the detector D1, D2 periodically To compare recurring pattern (or at least features of this pattern) with a previously recorded and / or stored pattern (or features this previously recorded pattern). For this purpose, the evaluation device has corresponding storage and / or computing means. If the currently recorded pattern deviates abruptly beyond certain tolerances from the previously recorded and / or stored pattern, a crack in the outer layer of the considered strand 21; 22 closed. In Fig. 17 is a schematic representation of a detector D1; D2; etc. track shown as a light-dark pattern. In a crack of this outer layer upstream of the detector D1, D2, the detector suddenly sees a completely different pattern from the previously detected pattern. This is illustrated in FIG. 18 by the two schematically illustrated light-dark patterns. As long as there is no crack, the detector reads D1; D2 the respective track as a light-dark pattern. Is it in tabloid productions, ie strands 21; 22 with partial webs cut open in the area of the secondary cutting lines, for the tear of the outer layer (in particular on the "inside") and, possibly, as a result of winders, the corresponding measuring head reads in the pattern of the underlying layers.

If the result is the diagnosis of a web break in one of the evaluation devices 34, this result can be output, for example, via an output interface 36 to a display and / or warning device of the printing press, in particular at the control station, and / or it can automatically be a direct control action. For example, a stop of the machine and / or a shutdown of the endangered guide element - be issued to a relevant control.

In Fig. 16 an embodiment according to FIG. 15 is set forth, but with the difference that here on both sides of the strand 21; 22 is measured and evaluated.

In the event that the embodiments illustrated with reference to FIGS. 15 to 18 for determining cracks of individual layers in conjunction with one or more Embodiments of the string register control from FIGS. 2 to 14 are to be used, it is advantageous to use the same detectors D1. .D55 or their signals for the evaluation of the register control and for the evaluation with respect to a possible crack per string. The evaluation units 34 can then optionally be integrated into the relevant evaluation units of the associated control circuits.

LIST OF REFERENCE NUMBERS

01 printing unit

02 train

03 form cylinder

04 transfer cylinder

05 -

06 roll changer

07 superstructure

08 longitudinal cutting device

09 turning devices

10 -

1 1 register device (s)

12 funnel construction

13 cross cutter

14 folder

15 -

16 former

17 former

18 former

19 longitudinal cutting device (funnel center section)

20 roller, guide roller

21 strand

21 .1 sub-string

21 .2 sub-string

21 .3 sub-string

22 strand

22.1 sub-string

22.2 sub-string 22.3 sub-string

23 strand

24 total strand

25 -

26 roller, pair of rollers

27 evaluation device

28 roller, transfer roller

29 roller, transfer roller

30 -

31 stapler

32 strand

33 roller, roller pair, Zugwalzenpaar

34 evaluation device

35 -

36 output interface

37 knife cylinders

38 transfer cylinders

39 jaw cylinder

Di detector, with i = 0, 1, 2, 3, 1 ', 2', 3a, 3b, 4a, 4b, 5, 1 1, 22, 33, 55 Rj control loop, with j = 0, 1, 2 ,, 3, 1 ', 2', 3a, 3b, 4a, 4b, 5, 1 1, 22, 33, 55 Sk actuator, with k = 0, 1, 2, 3a, 3b, 4a, 4b, 5

Claims

claims

1. cut register control in a funnel structure of a web-fed rotary printing press with at least one funnel plane having at least two juxtaposed formers (16; 17; 18), strands (21; 22; 23) coming from the formers (16; 17; 18) and / or sub-strands (21.1; 21.2; 21 .3; 22.1; 22.2; 22.3) at an exit of the hopper assembly (12) via a pair of rollers (26) to form a total strand (24) and fed to a folding apparatus (14), characterized in that downstream at least one of the number of formers (16; 17; 18) corresponding number of the cutting register regulating control loops (RO ... R55) with at least one detector (DO ... D55) and a the path length or the relative position between strand (21; 22; 23) and folding apparatus (14) influencing actuator (S0 ... S5) are provided.

Second cutting register control according to claim 1, characterized in that at least one of the control loops (RO ... R55) two on the two sides of the strand (21; 22; 23) or partial strand (21.1; 21 .2; 21.3; 22.1; 22.2; 22.3) directed detectors (DO ... D55).

3. cut register control according to claim 2, characterized in that an evaluation device (27) is provided, by which the signals of the two detectors (DO ... D55) are evaluated jointly via predetermined rules, and the result for controlling the cutting register position is zoomed.

4. cut register control according to claim 1, characterized in that at least one of the number of formers (16; 17; 18) corresponding number of control loops (RO ... R55) each two on the two sides of the strand (21; 22; 23) or sub-strands (21.1, 21.2, 21.3, 22.1, 22.2, 22.3) directed detectors (DO ... D55).

5. Cut control according to claim 1, characterized in that the detector (D0 ... D55) of a strand (21; 22; 23) or partial strand (21 .1; 21.2; 21.3; 22.1; 22.2; 22.3) with respect to Strangweges between the location of a downstream merge and the upstream last upstream leading element (20; 29; S1 ... S5) is arranged.

6. cutting register control according to claim 1, characterized in that at least the number of formers (16; 17; 18) associated control circuits (RL..R55) the detector (D0 ... D55) with respect to the respective strand path between the location of downstream merging and the upstream last upstream guide element (20; 29; S1 ... S5) have.

7. Cut register control according to claim 1, characterized in that in the funnel structure (12) a funnel-shaped longitudinally cut sub-strand (21.1; 21.2; 21.3; 22.1; 22.2; 22.3) with a coming from another former (16; 17; 18) strand or sub-string (21; 22; 23; 21.1; 21 .2; 21.3; 22.1; 22.2; 22.3), and on the path between the decoupling of the transferred sub-string (21.1; 21 .2; 21 .3; 22.1; 22.2 22.3) and the combination with the other strand or sub-strand (21; 22; 23; 21 .1; 21.2; 21 .3; 22.1; 22.2; 22.3) has an actuating element (S3; S3a; S3b) which influences the path length of the transferred partial strand. is provided.

8. Cut register control according to claim 7, characterized in that the control element (S3; S3a; S3b) is assigned as part of a control loop (R3; R33; R3a; R3b) a position detecting detector (D3; D33; D1; D2).

9. cut register control according to claim 8, characterized in that the Detector (D3; D33; D1; D2) is arranged downstream of the summary with the other strand (21; 22; 23; 21 .1; 21 .2; 21.3; 22.1; 22.2; 22.3).

10. Cut-off register control according to claim 1 or 7, characterized in that the measured values for position of all strands, and if present also of the partial strands are detected by detectors (D0 ... D55) which are located on the respective last section before a downstream of the funnel structure ( 12) last place of merging are arranged.

1 1. Cut-off register control according to claim 2, characterized in that an evaluation device (27) is provided, by means of which the phase positions of recurring signals of the two detectors (D0 ... D55) are comparable, and the result of the comparison can be used for the evaluation of line run errors.

12. cut register control according to claim 1, characterized in that an evaluation device (34) is provided, which is adapted to the detector (DO ... D55) recorded periodically recurring features of a pattern with previously recorded and / or stored features of a previously recorded pattern.

13. Cut register control according to claim 1, characterized in that the funnel plane has three formers (16; 17; 18) and the funnel structure (12) has at least three control loops (RO ... R55).

14. cut register control according to claim 1, characterized in that the funnel structure (12) has two funnel planes and at least four control loops (RO ... R55).

15. Method for cutting register control in a funnel construction of a Web-fed rotary printing press with at least one funnel plane having at least two juxtaposed former chambers (16, 17, 18), wherein the strands (21, 22, 23) and / or sub-strands (21, 21, 2) coming from the formers (16, 17; 21.3, 22.1, 22.2, 22.3) at an exit of the funnel structure (12) via a pair of rollers (26) to form a total strand (24), characterized in that downstream of the former (16; 17; 18) by means of at least one of Number of formers (16; 17; 18) corresponding number of control loops (RO ... R55) the cut registers of individual strands (21; 22; 23; 24) and / or sub-strands (21 .1; 21.2; 21.3; 22.1; 22.2 22.3) are respectively detected via at least one detector (DO ... D55) and regulated by means of a number of actuators (S0 ... S5) which influence the path length and corresponding to the number of formers (16; 17; 18).

16. The method according to claim 15, characterized in that downstream of at least one of the former (16; 17; 18) by means of two on the two sides of a strand (21; 22; 23) or sub-strand (21 .1; 21.2; 21. 3, 22.1, 22.2, 22.3) detectors (DO ... D55) the phase positions of recurring patterns on the strand or sub-string are measured and compared with each other, and the result of the comparison is used to detect strand run-off errors.

17. The method according to claim 15, characterized in that downstream of the former (16; 17; 18) by means of a strand (21; 22; 23) or sub-string (21.1; 21 .2; 21.3; 22.1; 22.2; 22.3 ) detector (DO ... D55) the phase positions of a periodically recurring patterns on the strand or sub-strand is recorded and compared with previously recorded and / or stored characteristics of a previously recorded pattern, and the result of the comparison to detect a crack of a layer is used.