EP2082878A2 - Method for pre-setting a line guide and system to preset line guides - Google Patents

Abstract

The method involves creating an adjustment value for the at least one unit (06,15) that influences the longitudinal register by using construction data and storing the adjustment value in a machine controller. A method of preadjustment of machine productions involves deriving an adjustment value for a unit that influences a longitudinal register between two tracks (A-F) from construction data. Independent claims are also included for the following: (a) a method of preadjusting productions of a sheet processing machine, (b) a system for preadjusting path guides for different productions of a sheet processing machine.

Description

The invention relates to a method of a strand guide and a system for presetting of strand guides according to the preamble of claim 1 or according to the features of claim 15.

By the DE 25 10 057 A1 is a funnel construction of a web-fed rotary printing press with a plurality of superposed hoppers known, wherein a longitudinal register of longitudinally folded strands is adjustable by means of pendulum rollers.

In the DE 41 28 797 C2 discloses a funnel construction with a plurality of superposed funnels, whereby different strand guides, and thus also different sequences of the individual books in the product are possible.

From the EP 0 882 588 B1 a method for controlling a longitudinal register is known, wherein depending on a speed, a predetermined correction value is switched to the controller of a drive motor for the cylinder drive. The dependency between correction and speed can be determined for different paper grades or productions by measurement and stored in a database.

The DE 44 30 693 A1 discloses printing units with single or group motor-driven cylinders. Depending on the selected web run, the motor controls are given by a computing and storage unit required target positions for the cylinder.

In the US 2002/029706 A1 During the drawing of a web, the paper path is recorded continuously, from there the distances between the printing units and the Cutting edge determined on the cutting unit and used for presetting the printing unit drives with respect to the cut and / or color register. The determination can also be made on the basis of construction-known known distances between the pressure points.

By the DE 43 40 543 A1 a tracking system is disclosed wherein, after selection of a particular production, trace information is retrieved from a memory and communicated to remote indicators associated with individual rolls relevant to the web.

The invention has for its object to provide a method for presetting a strand guide and a system for presetting of strand guides.

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

The achievable with the present invention consist in particular that on site, especially in the commissioning phase, a great time and cost savings can be achieved. In addition, the printer is given a means by which reliably determines the ideal or at least the best possible strand guidance for a particular product.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

eine schematische Darstellung einer Druckmaschine;

Fig. 2

eine Darstellung eines Trichteraufbaus;

Fig. 3

ein vereinfachtes Blockbild des Verfahrens;

Fig. 4

eine tabellarische Aufstellung verschiedener Strangführungen;

Fig. 5

eine Ausführung eines Bündelregisters;

Fig. 6

eine Stellkurve eines Bündelregisters;

Fig. 7

eine abgeleitete Vorgabe für Buchstrukturen.

Show it:

Fig. 1

a schematic representation of a printing machine;

Fig. 2

a representation of a funnel structure;

Fig. 3

a simplified block diagram of the process;

Fig. 4

a tabular list of various string guides;

Fig. 5

an embodiment of a bundle register;

Fig. 6

a control curve of a bundle register;

Fig. 7

a derived specification for book structures.

A web-processing and / or processing machine 01, z. As a printing press, in particular web-fed rotary printing press, has z. B. various possible paths of exemplified paths 02; 03; 04, by which the same or different products can be produced ( Fig. 1 ). For example, the printing press 01 has a plurality of printing units 06 (only one shown per printing tower), a plurality of printing units 07 and / or a plurality of printing towers 08, which, for. B. in a first production on a first path, and in another production in a different way (for example, a distance of the web 03 as 03 'indicated by dashed lines) are traversed by one or more tracks. In the area of an only indicated superstructure, the webs are optionally cut longitudinally by means of a longitudinal cutting device 11, possibly turned over turning bars 09 and aligned, partial webs 03a; 03b, if necessary by means of a register device 12, z. B. sub-register 12, each other in the longitudinal direction registers, and / or one above the other, before a hopper assembly 13 and then a folding apparatus 14; 16 are supplied.

The funnel structure 13 has a plurality of funnels A; B; C; D; e; F, which are arranged in at least two different horizontal planes ( Fig. 2 ). In the embodiment, the funnel structure 13 has six funnels A; B; C; D; e; F on, which are arranged in pairs in three levels one above the other. On the funnels A; B; C; D; e; F running webs are longitudinally folded and each as a strand of the same name individually or together with other strands A; B; C; D; e; F one or more Folders 14; 16 supplied. On the way, the strands A; B; C; D; e; F via a plurality of rollers 17; 18, z. B. Leit- (or deflection) and / or tension rollers (or Zugwalzengruppen) 17; 18 led. In Fig. 1 only some of the rollers 17; 18 exemplified. The rollers 17; 18 are driven in an advantageous embodiment in each case individually or in groups by its own, in particular with respect to their speed controlled, drive motor. Depending on the strand guide, the strands A; B; C; D; e; F with in each case other guide and / or tension rollers 17; 18 work together.

In addition, the hopper assembly 13 at least one actuator 19 for the longitudinal register, z. B. a register device 19, in particular bundle register 19 on. The hopper assembly 13 has a number of n funnels A; B; C; D; e; F on, at least n-2 actuators 19 are provided in an advantageous embodiment. With the actuators 19, the strands A; B; C; D; e; F aligned by a path change in their printed image in the longitudinal direction to each other.

In the exemplary embodiment with a total of six, arranged in three levels in pairs funnels and the rollers 17; 18 can realize a large number of possible strand guides. Due to the different strand guides can be in the entrance area of the folder 14; 16 different sequences for strands A; B; C; D; e; F, and thus create different book structures in the product. If necessary, in particular if not all funnels A; B; C; D; e; F required, a same book structure can also be achieved via different strand guides.

For different strand guides are now sometimes different path lengths of the strands, so that the printed images and the sections in the folder are no longer consistent with each other.

For this reason, as a rule, at least in the commissioning phase of the machine 01, a so-called "impression printing" must take place for all provided line guides. Here are the trial print basic settings of the longitudinal register of the webs 02; 03; 04 and / or strands A; B; C; D; e; F influencing aggregates, z. B. angular positions of the printing units 06, position of the secondary register 12, bundle register 19 and / or angular position of the folder 14; 16 determined based on the printed images and the section. Such basic settings are then stored for example for the special web or strand guidance. This procedure is, especially the more funnels A to F are provided, very time-consuming and time-consuming.

In the present procedure for presetting, setting values SA to SF; PA to PF; K1; K2; K3 derived for a strand management in question on the basis of design data (in particular data from a CAD program) and stored in a machine control 21 ( Fig. 3 ). In Fig. 4 are in the style of a table different string guides Sk (see Fig. 4 , with k = 1, 2, 3, ...) by way of example and not exhaustive. In this case, the setting values SA to SF; PA to PF; K1; K2; K3 be occupied for the different strand guides Sk each with absolute positions or these expressing physical quantities. The fact that a setting value belongs to a specific line control has been marked with the addition "1", "2" etc. In a variant, a strand guide can also be defined as the reference guide, to which relative setting values SA to SF; PA to PF; K1; K2; K3 be determined and stored. It can be provided for the various register devices and mixed forms of the two mentioned procedures. The setting values SA to SF represent, for example, setting values in mm for a lengthening of the strand A to F achieved by the register unit 19 assigned to the respective strand A to F. The setting values PA to PF correspond, for example, to a physical measured value used for this purpose. B. a resistance value on a potentiometer (see below).

In the exemplary embodiment of the method according to Fig. 3 are Sk for a particular string (see Fig. 4 , with k = 1, 2, 3,...), by way of example for S1, in a data processing unit 22, in particular by means of a program for computer-aided drawing and / or designing, on the basis of Design data, the set values SA, 1 to SF, 1 or PA, 1 to PF, 1 and / or K1, 1; k 2.1; K3,1 determined.

First, for this purpose, the longitudinal register of two strands A, B; C, D; E, F of paired funnels A, B lying side by side in a plane; C, D; E, F considered. The rollers 17; 18 in the area below the lowest hopper level are arranged in an advantageous embodiment already such that the printed images from the hopper A and B come to rest in the folder register. If this is not the case, then the strands A and B can also be aligned in accordance with one another by a common register device 19, which optionally interacts with one of the strands A and B. It can for each strand A; B each own register means 19 may be provided.

Now for the special strand guide Sk, here S1, the lengths of the two adjacent strands C and D (for example) from the respective funnel outlet to the strands C and D summarizing nip 23, z. B. the roller group 23 is determined and varied by the two associated bundle register 19 such that the printed images come to rest in the region of the nip 23 in register. If the printed images arranged next to one another on a cylinder of a printing unit are offset relative to one another in the circumferential direction (so that the printed images on the two juxtaposed hoppers C and D are offset by the same amount relative to one another in the longitudinal direction, this offset must also be considered , If now the lengths LC and LD (possibly plus the amount of a print image offset) are the same, ie the print images should now come to rest in the region of the nip 23, the setting values SC, 1; SD, 1 or PC, 1; PD, 1 stored for the bundle registers 19 for this particular strand routing of strands C and D. For the two strands E and F, the determination is made in the same way. This also applies to the strands A and B, if not already by the arrangement of the rollers 17; 18 is provided for the corresponding routes.

This can now for all interest strand guides Sk, exemplified in Fig. 4 S1, S2, S3, S4. The setting values thus obtained are stored, for example, by means of a file or database in the data processing unit 22, in each case based on the specific string guide.

As a result of the procedure described, the paths in each case of two strands A to F running next to one another over funnels A to F of a funnel plane are aligned in pairs relative to one another. The orientation of the printed images on the webs 02; 03; 04 or strands of different funnel planes to each other here is not yet taken into account. Like the printed images of the various hopper levels at the nip 23 and in the folder 14; 16 are each to each other, is of the respective web guide by the printing machine 01 in front of the hopper assembly 13 and / or by the relative angular position of the different tracks 02; 03; 04 printing units 06 dependent and will be referred to as the main register.

The main register of a web 02; 02 'can now by symbolically only above the web 02' shown register means 15, z. B. in the superstructure, and / or by a change in the relative angular position of all a web 02; 03; 04 printing units 06 are changed relative to those of another web 06. Accordingly, it can be provided in a variant, the funnel planes by preset values K1; K2; K3 relative angular positions of the printing units 06 to each other or in a second, not shown variant by preset values for corresponding register means 15 in the longitudinal register to match each other. A mixed variant can also be provided, in which case two sets of preset values K1; K2; K3 are provided.

In addition to the presetting of the abovementioned strand guides Sk in the region of the funnel structure 13 by means of the register devices 19, setting values K1; K2; K3 for the individual productions, ie web guides determined by the printing press 01. This can be done in one execution be made such that for each web guide of interest by means of the program for computer-aided drawing and / or construction of the relevant railway path, z. B. between the last printing location and the folding apparatus 14; 16 and the nip 23 is determined and outputted, two running on different levels funnel trajectories are compared in their path with each other, and a preset value K1; K2; K3 for the angular position and / or a register device 15 is set in such a way that the printed section lengths in the region in the region of the nip 23 come to rest on one another in register. The preset value K1; K2; K3 for the relevant funnel plane refers to all tracks 02 routed through this funnel plane; 03; 04 and the cooperating printing units 06. In the embodiment according to Fig. 4 For example, K1 refers to the lowest, K2 to the middle and K3 to the top funnel level. The further labeling with ", 1", ", 2" etc. indicates the assignment to a strand guide. However, depending on the web guide, several productions with different web guides can be present by the printing units 07 per strand guide, so that a plurality of sets of preset values K1; K2; K3 (eg K1,1a, K1,2a, K1,3a, K1,1b, K1,2b, K1,3b, etc.) may be present.

In an advantageous embodiment, one of the funnel planes, z. B. the lowest funnel level, considered as a reference and thus has the default value K1 = 0 on. The setting values K2 and K3 then represent relative positions to the lowest hopper level. However, absolute values, for example, can be set for all three hopper levels. For example, a correction value may be given in mm.

The setting values K1, k; K2, k; K3, k are now determined production related as above to the set values SA, 1 to SF, 1 and PA, 1 to PF, 1 carried out in the data processing unit 22 on the basis of design data and fed to the machine control, where they are stored and for a planned production is transmitted as a basic setting to the respective actuators.

In a variant of the presetting of the main register, which is based entirely on design data, a pairwise presetting of the strands A to F in the above-mentioned manner can advantageously be carried out. Be done on the basis of the design data, but in a selected strand guide Sk, z. B. the strand guide S1, the main register preset in trial printing operation (when printing) determined. That after presetting the bundle register 19 via the setting values SA, 1 to SF, 1 or PA, 1 to PF, 1 obtained from the design data, a trial printing is carried out for one or more specific web guides, the angular positions of the printing units 06 and / or register means 15 are set in such a way until the printed images are aligned in the region of the folder in the longitudinal register to each other. This production together with the strand guide S1 can be used, for example, as a reference for the setting values K1; K2; K3 serve the remaining strand guides Sk. The set values K1; K2; K3 of the remaining strand guides Sk are then determined, for example, solely on the basis of the design documentation and set relative values, ie. H. Sums or differences, for reference production.

A default setting of the printing units 06 and possibly the folder 14; 16 can also take place in relation to a virtual leading axis of the printing press 01, so that the setting values K1 to K3 then represent angular positions relative to the leading axis.

The above-mentioned register device 19 is advantageously designed as a roller 26, which is rotatably mounted on a lever 27 or mounted on two end levers 27. The lever 27 is pivotally mounted about a frame fixed pivot axis. For this he is z. B. rotatably connected to a rotatable shaft 28, which in turn is pivotable by a further lever 29. The levers 27; 29 can also in the manner of a two-legged lever 27; 29 formed and pivotally mounted on a rotationally fixed axis 28 may be arranged. The lever 29 is pivoted about the pivot axis via a gear 31, for example a screw 31. The drive of the transmission 31 takes place for example by means of an electric motor 32. To determine the position of the thread on the spindle, and thus a position of the roller 26, a potentiometer 33 is provided, which is mechanically coupled to the drive of the transmission 31. With appropriate calibration provides a resistance value on the potentiometer 33, the information for the elongation or change in length of a strand path, z. In mm (see Fig. 6 ).

In addition to the production o. G. Set values SA to SF; PA to PF; K1; K2; K3 or independently of this, by means of the design data, for. B. in the data processing unit 22, already carried out an evaluation and optimization of a strand guide Sk for a desired book structure. This is relevant in the event that not all available funnels A to F must be used for the producing product. If necessary, several of the strand guides Sk can then lead to a given book structure. These are, however, z. T. differently well suited. An essential criterion for this is the wrap angle of the involved strands A to F about the rollers 14; 16th

In the data processing unit 22, for strand guides Sk which fulfill the requirement for a specific book structure, the different angles of wrap along the entire strand paths are determined. An advantageous criterion for the selection of the most suitable strand guide Sk is that there is a minimum maximum wrap angle. For this purpose, the maximum wrap angle of this strand guide Sk is determined for each of the strand guides Sk in question, and the strand guide Sk which has the smallest maximum wrap angle is favored. In addition, however, other criteria can also find an influence, which, weighted accordingly, can additionally be used.

In Fig. 7 By way of example, a derived specification for book structures is shown which only use five of the six funnels. A desired book structure is now assigned a suitable strand guide Sk from the set of all possible strand guides. This comes from the amount of string guides Sk, which result from the use of all six funnels A to F. The possible string guides Sk below Consideration of all existing funnels A to F thus represent standard productions on which the selected strand guides Sk are based. The minus sign "-" in column 1 symbolizes the strand A to F, which is missing with respect to the standard production with all strands A to F, ie the corresponding funnel A to F is not used. The situation mentioned for five used funnels applies equally to book structures with only three or only four books.

A criterion different or additional to the above criterion for selecting the most suitable strand guide Sk can be a measure of the required changes in relation to the path of the path just given, especially when changing from a newly produced product to a new one. In this case, it may be better, for example, to drive the webs or strands in the funnel structure 13 with possibly less favorable wraps (see criterion above), and to be able to leave the majority of the webs on their way to the funnel inlet, as optimal strand paths in the funnel structure 13 to achieve, but all tracks have to move from scratch.

The criteria can also be mixed into a decision matrix, into an algorithm of a program or a fuzzy logic.

LIST OF REFERENCE NUMBERS

01

Machine, printing machine

02

train

02 '

train

03

train

03 '

Track 03 with another guide

03a

part web

03b

part web

04

train

05

-

06

printing unit

07

printing unit

08

printing tower

09

turning bars

10

-

11

Slitter

12

Register device, secondary register

13

former assembly

14

folding

15

Register device, main register

16

folding

17

Roller, guide, guide roller

18

Roller, draw roller

19

Actuator, longitudinal register, bundle register

20

-

21

machine control

22

Data processing unit

23

Nip, roll group

24

-

25

-

26

roller

27

lever

28

axis

29

lever

30

-

31

transmission

32

electric motor

33

potentiometer

A to F

Funnel, strand of the funnel

S1 to S4, Sk

strand guides

SA, i to SF, i

Setting value for the i-th string guide

PA, i to PA, i

Setting value for the i-th string guide

LA, i to LA, i

Length of one of the strands of the i-th strand guide

Claims (15)

Method for presetting a strand guide in a funnel structure (13) of a web-processing machine by at least one actuator (19) arranged in at least two planes (A to F) in the funnel structure (13) in the path of a folded strand and by which the travel distance of a longitudinally folded strand in the funnel structure (13) is influenced, characterized in that for a given strand guidance through the funnel structure by means of a computer aided drawing and / or constructing program on the basis of the design data a set value (SA, k to SF, k, K1, k to K3, k) for the at least one actuator (19) derived, stored in a machine control (21) and when calling this strand guide the actuator (19) corresponding to this set value (SA, k to SF, k ; K1, k to K3, k). A method according to claim 1, characterized in that in deriving the setting value (K1, k to K3, k) for the main register, the theoretically resulting web paths of webs (02; 02 ';03; 04) of two different hopper planes are juxtaposed. Method according to Claim 1, characterized in that, in the derivation of the set value (SA, k to SF, k) for the actuator (19), the resulting paths for two strand strands (AB; CD; EF) of a same funnel plane are theoretical facing each other. A method according to claim 1, characterized in that as a longitudinal register influencing actuator (19) a bundle register (19) is preset in the folding structure. A method according to claim 1, characterized in that as a longitudinal register influencing aggregate an angular position of a cylinder of a printing unit (06) is preset. Method according to Claim 1, characterized in that a main register of the webs (02, 02 ', 03, 04) running together on a funnel plane is preset as an assembly (06; Method according to Claim 6, characterized in that the main register is set via the rotational angle position of the printing units (06) assigned to these webs (02; 02 ';03; 04). Method according to claim 6, characterized in that the main register is adjusted via the tracks (02; 03; 04) associated register means (15). A method according to claim 1, characterized in that the set value (SA, k to SF, k; K1, k to K3, k) is derived for a possible second production as a relative value to a first production. Method according to Claim 1, characterized in that the setting value (SA, k to SF, k; K1, k to K3, k) is determined as the absolute value of a variable describing a length and / or elongation. Method according to claim 3, characterized in that the two strands (AB; CD; EF) are adjusted to each other by two bundle registers (19) such that a smallest maximum wrap angle is achieved at the two bundle registers (19). A method according to claim 1, characterized in that in the derivation of the Setting only geometric features are taken into account. Method according to claim 1, characterized in that a post-correction during production is product-specifically stored back in the machine control (21) as a new setting value (SA, k to SF, k; K1, k to K3, k). A method according to claim 1, characterized in that the relative adjustment value (SA, k to SF, k; K1, k to K3, k) or the preferred strand guide (Sk) is generated by a computer-aided drawing and / or constructing program. System for presetting strand guides of different productions in a funnel structure (13) with two different levels of a web-processing machine, with an actuator (19) arranged in the strand path of a folded strand passing through the funnel structure (13) to influence its longitudinal register is, with a means for computer-aided drawing and / or designing, and with a storage medium associated with the machine, - wherein the means for computer-aided drawing and / or designing are adapted to determine a path length of a strand (A to F) within the funnel structure (13) relative to another strand (A to F) and from a set value (SA, k to generate SF, k, K1, k to K3, k) for the actuator (13), the storage medium being designed to store this set value resulting from the relative position (SA, k to SF, k; K1, k to K3, k), - And wherein the actuator located in the strand path (19) is associated with at least one adjusting means, which with the set value (SA, k to SF, k) can be acted upon.

Images