EP2386389B1 - Method and device for longitudinally perforating a mobile sheet of material - Google Patents

Description

The present invention relates to a method and a device for longitudinal perforation of a moving material web according to the preamble of claim 1 and of claim 10, respectively.

In the DE 44 42 411 A1 a generic method for processing a paper web is described, in which a plurality of processing tools are used, which are arranged in a direction transverse to the direction of movement of the paper web side by side. The editing tools are individually controlled by control signals generated by a computer. The processing tools may be perforating tools for attaching longitudinal perforations in the paper web.

In addition, methods for longitudinal cutting of moving material webs are known, in which a plurality of individually controllable cutting tools are used, which are arranged next to one another in a direction transverse to the direction of movement of the material web ( EP 0 947 880 A1 ; US 2009/028038 A1 ; EP 0 236 275 A2 ). When in the EP 0 947 880 A1 or in the US 2009/028038 A1 described method, the cutting blades are moved to produce a correct cutting line, while when from the EP 0 236 275 A2 Known methods, the selection and activation of the cutting tools based on data obtained by reading applied on the web of encodings. The encodings contain information regarding the respective cutting tool to be activated.

The present invention is based on the object to provide a method and an apparatus of the aforementioned type, with which or with which it is possible to produce different Perforierbilder in the web, without the need for changeover times for mechanical conversions are required.

This object is achieved according to the invention by a method having the features of claim 1 and a device having the features of claim 10.

Fig. 1

in einer perspektivischen Ansicht eine Längsperforiereinheit mit durch diese hindurch laufender Materialbahn,

Fig. 2

in Draufsicht einen Abschnitt einer Materialbahn mit verschiedenen zu perforierenden Materialbahnbereichen,

Fig. 3

in Draufsicht und vergrössert einen der in Fig. 2 dargestellten Materialbahnbereiche,

Fig. 4

den in Fig. 3 dargestellten Materialbahnbereich mit den vorgesehenen Längsperforationen,

Fig. 5

in Draufsicht die Anordnung der Längsperforierwerkzeuge,

Fig. 6

in Draufsicht die in zwei Bahnstreifen unterteilte Materialbahn,

Fig. 7

ein Blockschaltbild der Steuereinrichtung zum Steuern der Längsperforierwerkzeuge, und

Fig. 8 - 10

jeweils in Draufsicht verschiedene Einsatzmöglichkeiten der Längsperforierwerkzeuge.

The subject invention will be explained in more detail with reference to the drawings. It shows purely schematically:

Fig. 1

3 is a perspective view of a longitudinal perforating unit with a material web running through it;

Fig. 2

in plan view, a section of a material web with different material web areas to be perforated,

Fig. 3

in plan view and enlarged one of in Fig. 2 shown material web areas,

Fig. 4

the in Fig. 3 shown material web area with the intended longitudinal perforations,

Fig. 5

in plan view, the arrangement of Längsperforierwerkzeuge,

Fig. 6

in plan view, divided into two web strips material web,

Fig. 7

a block diagram of the control device for controlling the Längsperforierwerkzeuge, and

Fig. 8 - 10

each in plan view different applications of Längsperforierwerkzeuge.

In the Fig. 1 schematically a Längsperforiereinheit 1 with a portion of a material web 2 is shown, which is moved in the direction of arrow A through the Längsperforiereinheit 1 therethrough. The Längsperforiereinheit 1 has a number of Längsperforierwerkzeugen, that is, in the embodiment shown four Längsperforierwerkzeuge 3, 4, 5 and 6, which individually controlled, that is individually activated and deactivated, and can be in a direction transverse to the direction of movement A of the web 2 extending Direction B are offset from each other. The longitudinal perforating tools 3, 4, 5, 6 cooperate in a manner known per se with a knife shaft 7 arranged below the material web 2. These Längsperforierwerkzeuge 3, 4, 5, 6 serve to produce in the web 2 different Perforierbilder, as now with reference to the FIGS. 2 and 3 will be explained.

The in the Fig. 2 Material web 2 shown in plan view is subdivided into two material web strips 2 a, 2 b located next to one another in the longitudinal direction of the material web 2 (double use). Each material web strip 2 a, 2 b has areas (formats) 8, 9, 10 or 8 ', 9', 10 'lying one behind the other seen in the direction of movement A of the material web 2, said regions having different perforation images 11, 12, 13 or 11', 12 '. should be provided. These still to be created Perforating images 11, 12, 13, 11 ', 12' are indicated by dotted perforation lines and are formed by transverse perforation lines 14 and longitudinal perforation lines 15. Each material web region 8, 9, 10, 8 ', 9', 10 'is provided with a marking 16 which is allocated to the perforation image 11, 12, 13, 11', 12 'belonging to the corresponding region in terms of information. That is, each mark 16 is associated with information that is indicative of the associated perforation 11, 12, 13, 11 'and 12' and in a control device based on the Fig. 7 will be described, is stored. In the Fig. 2 shown material web 2 has two edge strips 17 and 18, which have control marks in a known manner and later cut away. In addition, the material web 2 is provided with an intermediate strip of material webs 2a, 2b center strip 19, which may also be printed with tax stamps and later also cut away.

In Fig. 3 is the in Fig. 2 shown material web portion 10 shown in an enlarged scale. The perforation pattern 13 to be produced in this material web region 10 has three transverse perforation lines 14a, 14b and 14c and three longitudinal perforation lines 15a, 15b and 15c. The production of the transverse perforation lines 14a, 14b and 14c will not be discussed in more detail. On the other hand, the following describes how to make the longitudinal perforation lines 15a, 15b and 15c.

Before starting the longitudinal perforating process, the above-mentioned, in Fig. 7 illustrated control device for the Längsperforierwerkzeuge 3, 4, 5, 6 are set up. This setup will be described below with reference to Fig. 4-7 explained.

Based on the in Fig. 4 that in the representation of the Fig. 3 Material web section 10, which is illustrated, describes how the different perforation patterns 11, 12, 13, 11 ', 12' are defined. The position of the longitudinal perforation lines 15a, 15b, 15c within the Perforierbildes 13 are with respect to a reference size, which in the present case by that side line 10b of the web portion 10, which extends parallel to the direction of movement A of the web 2 set. The distances of the longitudinal perforation lines 15a, 15b, 15c transversely to the direction of movement A of the material web 2 are indicated by x1, x2, x3. This distance information is in a to the control device according to Fig. 7 belonging Perforierbildspeicher 22 stored. The length of the longitudinal perforation lines 15a, 15b, 15c is likewise fixed with respect to a reference variable, which in the exemplary embodiment shown is that side line 10a of the material web region 10 which is perpendicular to the side line 10b. The corresponding distances are denoted by y1, y2, y3 and y4. This position information is also stored in the perforation picture memory 22.

In the Perforierbildspeicher 22 also takes place the storage of a tolerance size, which is determined by what amount the predetermined Längsperforierlinie 15a, 15b or 15c may deviate laterally from the given position of the associated Längsperforierwerkzeugs 3, 4, 5 and 6, thus still activating this Längsperforierwerkzeuges he follows.

As the Fig. 5 shows, the fixed position of the individual Längsperforierwerkzeuge 3, 4, 5, 6 is also set with respect to a reference size, which in the present case is a lateral edge of the machine 20. The distances of the Längsperforierwerkzeuge 3, 4, 5, 6 of this reference size 20 are denoted by a1, a2 and a3. This position information is determined by an operator or via a sensor device (symbolized by the input unit 23 in FIG Fig. 7 ) in a control arrangement 21 of the control device according to Fig. 7 entered and stored in this control arrangement 21.

From the Fig. 6 shows that the distances b1 and b2 of the material web strips 2a, 2b (use) with respect to a reference size, that is, with respect to the already mentioned lateral machine edge 20, are set. The corresponding distance information is entered by the operator in the control arrangement 21 and stored there.

In Fig. 7 the block diagram of the already mentioned control device for controlling the Längsperforierwerkzeuge 3, 4, 5, 6 is shown. As already mentioned, the information regarding the position and length of the longitudinal perforation lines 15 of the individual perforation images 11, 12, 13, 11 ', 12' is stored in the perforation image memory 22. The input unit 23 is used for inputting the information relating to the position of the longitudinal perforating tools 3, 4, 5, 6. A reading unit 24, which serves to interrogate the markings 16, is also connected to the control arrangement 21 and seen in the direction of movement A of the web 2 before the Längsperforierwerkzeugen 3, 4, 5, 6 is arranged. On the output side, the control arrangement 21 is connected to the individual Längsperforierwerkzeuge 3, 4, 5, 6, which are actuated for example by means of solenoid valves.

The sequence of a perforation will be described below with reference to Fig. 8 , in which the web portion 10 is shown with the perforation 13, explained.

As soon as the marking 16 associated with the material web region 10 passes the reading unit 24, the data read by the latter and associated with information stored in the control device 21, 22 and associated with the perforation image 13 are fed to the control arrangement 21. This fetches the information associated with the perforating image 13 from the perforating image memory 22 and, taking into account the previously mentioned tolerance quantity, checks which of the longitudinal perforating tools 3, 4, 5 is in the position suitable for producing the longitudinal perforation line 15a, 15b and 15c, respectively , Then at the right time (determined by the distances y1-y4 ( Fig. 4 ) associated distance information) the corresponding Längsperforierwerkzeug selected and activated. As shown in Fig. 8 For example, the longitudinal perforating tool 5 for the production of the longitudinal perforation line 15a, the longitudinal perforating tool 3 for the production of the longitudinal perforation line 15b, and later the longitudinal perforating tool 4 for the production of the longitudinal perforation line 15c are selected and activated.

Under certain circumstances, for the production of a particular longitudinal perforation line 15a, 15b or 15c, various of the existing longitudinal perforating tool 3, 4, 5 and 6 could be considered. This is especially the case when seen in the direction of movement A of the web 2, two or more longitudinal perforating units 1 are arranged one behind the other.

The above-described process of selecting and activating the longitudinal perforating tools required for the production of a particular perforation pattern is repeated for each new perforation image to be produced. In this case, it is possible for different longitudinal perforating tools to be used in each case for the production of two identical perforation images, e.g. depending on the sequence of these perforation images.

With reference to the Fig. 9 , the representation of the Fig. 8 corresponds, but in which the Längsperforierwerkzeuge 4 and 5 are replaced, an advantage of the inventive solution is explained. Since there is no fixed assignment of a specific longitudinal perforating tool to the longitudinal perforation lines 15a and 15c, the replacement of the longitudinal perforation tools 4 and 5 has no influence on the information stored in the perforation image memory 22 and indicative of the perforation pattern 13. The control arrangement 21 always controls that longitudinal perforating tool 4 or 5, which is located in the position required for the production of the respective longitudinal perforation line 15a or 15c. That means, at the in Fig. 9 shown arrangement of Längsperforierwerkzeuge used - unlike in the arrangement according to Fig. 8 the longitudinal perforating tool 4 for producing the longitudinal perforation line 15a and the longitudinal perforating tool 5 for producing the longitudinal perforation line 15c.

Consequently, it is not necessary to adapt the information stored in the perforation image memory 22 to a perforation image if longitudinal perforation tools are exchanged, removed or added, since the individual longitudinal perforation lines are not directly linked to a particular longitudinal perforation tool.

Based on Fig. 10 , the representation of the Fig. 8 corresponds, it should be shown that the inventive idea allows the detection of errors. In this Fig. 10 is shown that the stored information regarding the position of the longitudinal perforation line 15a 'is faulty, because this perforation line 15a' would come to lie outside of the previously mentioned tolerance range. The control assembly 21 detects this prematurely and can cause the Längsperforiervorgang is stopped in time, so that there is no damage to the web 2.

Claims (12)

1. Method for the longitudinal perforation of a moving material web (2), in the case of which the material web (2) is processed by means of a number of individually activatable longitudinal-perforation tools (3, 4, 5, 6), which are offset in relation to one another in a direction (B) running transversely to the movement direction (A) of the material web (2) and are activated in each case by control signals generated in a control device (21, 22), characterized in that the fixedly arranged longitudinal-perforation tools (3, 4, 5, 6) are used to make different perforation patterns (11, 12, 13, 11', 12') in regions (8, 9, 10, 8', 9', 10') of the material web (2) which are located one behind the other in the movement direction (A) of the material web (2), and in that the perforation tools (3, 4, 5, 6) required for producing a specific perforation pattern (11, 12, 13, 11', 12') in a specific region (8, 9, 10, 8', 9', 10') of the material web (2) are selected and activated on the basis of scanning of a marking (16) which is provided on the material web (2), is assigned to said specific material-web region (8, 9, 10, 8', 9', 10') and is linked to information which is stored in the control device (21, 22) and is characteristic of the perforation pattern (11, 12, 13, 11', 12') which is to be produced in the associated material-web region (8, 9, 10, 8', 9', 10').
2. Method according to Claim 1, characterized in that the markings (16) applied to the material web (2) are scanned before the corresponding material-web portion (2) reaches the longitudinal-perforation tools (3, 4, 5, 6), and in that then, on the basis of a scanned marking (16), the perforation tools (3, 4, 5, 6) selected and activated are those which are required for producing that perforation pattern (11, 12, 13, 11', 12') in the corresponding material-web region (8, 9, 10, 8', 9', 10') which is assigned to the scanned marking (16).
3. Method according to Claim 1 or 2, characterized in that the markings (16) are applied in each case in the associated material-web region (8, 9, 10, 8', 9', 10').
4. Method according to one of Claims 1 to 3, characterized in that the control device (21, 22) stores in retrievable form for each perforation pattern (11, 12, 13, 11', 12') the information relating to the length and position of the longitudinal-perforation lines (15) belonging to said perforation pattern (11, 12, 13, 11', 12').
5. Method according to Claim 4, characterized in that the position of the longitudinal-perforation lines (15) belonging to a perforation pattern (11, 12, 13, 11', 12') is defined to start from a reference variable, preferably to start from a side line (10b) of the corresponding material-web region (10) which extends in the movement direction (A) of the material web (2).
6. Method according to Claim 4 or 5, characterized in that the length of the longitudinal-perforation lines (15) belonging to a perforation pattern (11, 12, 13, 11', 12') is defined to start from a reference variable, preferably to start from a side line (10a) of the corresponding material-web region (10) which extends transversely to the movement direction of the material web.
7. Method according to one of Claims 1 to 6, characterized in that the positions of the longitudinal-perforation tools (3, 4, 5, 6) are defined to start from a reference variable (20), and the information relating to the positions of the longitudinal-perforation tools (3, 4, 5 , 6) is stored in retrievable form in the control device (21, 22).
8. Method according to Claims 4 and 7, characterized in that, in order to produce the perforation pattern (13) in a specific material-web region (10), the perforation tools (3, 4, 5) required for this purpose are activated on the basis of the stored information relating to the position and length of the longitudinal-perforation lines (15a, 15b, 15c) of said perforation pattern (13) and on the basis of the stored information relating to the position of the longitudinal-perforation tools (3, 4, 5).
9. Method according to Claim 8, characterized in that the longitudinal-perforation tool which is to produce a specific longitudinal-perforation line is also activated whenever its position in relation to the desired position of said longitudinal-perforation line is offset laterally by a certain amount in a direction (B) running transversely to the movement direction (A) of the material web (2).
10. Apparatus for the longitudinal perforation of a moving material web, having a number of individually activatable longitudinal-perforation tools (3, 4, 5, 6), which are offset in relation to one another in a direction (B) running transversely to the movement direction (A) of the material web (2), and having a control device (21, 22) for controlling the individual longitudinal-perforation tools (3, 4, 5, 6), characterized in that the longitudinal-perforation tools (3, 4, 5, 6) are arranged at a fixed location and serve to make different perforation patterns (11, 12, 13, 11', 12') in regions (8, 9, 10, 8', 9', 10') of the material web (2) which are located one behind the other in the movement direction (A) of the material web (2), and in that the control device (21, 22) stores information which is characteristic of the perforation pattern (11, 12, 13, 11', 12') which is to be produced in each case in a material-web region (8, 9, 10, 8', 9', 10'), wherein those perforation tools (3, 4, 5, 6) which are required for producing a specific perforation pattern (11, 12, 13, 11', 12') in a specific region (8, 9, 10, 8', 9', 10') of the material web (2) are selected and activated by the control device (21, 22) on the basis of scanning of a marking (16) which is provided on the material web (2), is assigned to said specific material-web region (8, 9, 10, 8', 9', 10') and is linked to the stored information which is characteristic of the perforation pattern (11, 12, 13, 11', 12') which is to be produced in the associated material-web region (8, 9, 10, 8', 9', 10').
11. Apparatus according to Claim 10, characterized by a scanning device (24) for scanning markings (16) which are provided on the material web (2), are assigned in each case to a region (8, 9, 10, 8', 9', 10') of the material web (2) which is to be provided with a perforation pattern (11, 12, 13, 11', 12') and are linked to information which is stored in the control device (21, 22) and is characteristic of the perforation pattern (11, 12, 13, 11', 12') which is to be produced in the associated material-web region (8, 9, 10, 8', 9', 10').
12. Apparatus according to Claim 11, characterized by a control device (21, 22) which is intended for activating and deactivating the longitudinal-perforation tools (3, 4, 5, 6), has the scanning device (24) connected to it and stores, on the one hand, for each perforation pattern (11, 12, 13, 11', 12'), the information relating to the length and position of the longitudinal-perforation lines (15) belonging to said perforation pattern (11, 12, 13, 11', 12') and, on the other hand, the information relating to the positions of the longitudinal-perforation tools (3, 4, 5, 6).

Images