EP2487015A1 - Device for punching moving sheets of material - Google Patents

Abstract

The punching device has two punching units (1a,1b) that are provided along movement direction (A) of sheet material (17). Each punching unit comprises two punching tools (2,2') which work together with a drivable counter-pressure cylinder (5). The punching tools are fixed along longitudinal axis (3a) of drive shaft (3) in different working positions. A punched tape is detachably fixed on periphery of each punching tool. The drive shaft is driven independently with respect to counter-pressure cylinder.

Description

The present invention relates to an apparatus for punching or perforating moving webs of material.

In the DE 103 14 959 A1 a punching unit is disclosed which has a plurality of punches mounted on an axis, the distance of which is adjustable to each other and which are intended to work together with a counter-pressure cylinder. Each punching tool has a cylindrical disk, on the circumference of which a metal strip provided with stamped profiles is detachably held.

From the DE 298 05 004 U1 another embodiment of a punching tool is known, which also has a cylindrical disc, on the circumference of a punched sheet metal provided with a stamped profile is releasably held. This punching tool is provided with means for sucking and later discharging the punched parts (punched pieces).

The present invention is based on the object to provide a device for punching moving material webs, which allows to change in a simple and time-saving manner, the arrangement and / or the shape (contour) of the auszustanzenden parts (punched).

This object is achieved according to the invention with a device having the features of claim 1.

Preferred further developments of the device according to the invention form the subject of claims 2 - 15 -

Fig. 1

in einer perspektivischen Ansicht eine Stanzeinheit mit einem Stanzwerkzeug,

Fig. 2

in einem Längsschnitt eine Stanzeinheit mit zwei Stanzwerkzeugen,

Fig. 3

die Stanzeinheit getnäss Fig. 2 in einem Querschnitt,

Fig. 4

in einer perspektivischen Ansicht ein Stanzwerkzeug,

Fig. 5

in einer perspektivischen Ansicht eine erste Ausführungsform einer Stanzvorrichtung mit zwei Stanzeinheiten,

Fig. 6

in einer perspektivischen Ansicht eine erste Ausführungsform einer Stanzvorrichtung mit drei Stanzeinheiten,

Fig. 7

in einer perspektivischen Ansicht eine zweite Ausführungsform einer Stanzvorrichtung mit zwei Stanzeinheiten,

Fig. 8

in einer perspektivischen Ansicht eine zweite Ausführungsform einer Stanzvorrichtung mit drei Stanzeinheiten,

Fig. 9

in einer perspektivischen Ansicht und vereinfacht das Stanzen von Lochungen in einer Materialbahn,

Fig. 10

in einer Seitenansicht und vereinfacht ein Stanzwerkzeug mit der zu bearbeitenden Materialbahn,

Fig. 11

in einer schematischen Darstellung den Verlauf der Drehgeschwindigkeit des Stanzwerkzeugs bei verschiedenen Stanzsituationen,

Fig. 12

ein Blockschema der Steuerung für eine Stanzeinheit,

Fig- 13

im Querschnitt eine Stanzeinheit mit einer ersten Ausführungsform einer Einrichtung zum Abtransportieren der ausgestanzten Teile, und

Fig. 14

im Querschnitt eine Stanzeinheit mit einer zweiten Ausführungsform einer Einrichtung zum Abtransportieren der ausgestanzten Teile.

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

Fig. 1

in a perspective view of a punching unit with a punching tool,

Fig. 2

in a longitudinal section a punching unit with two punching tools,

Fig. 3

the punching unit is getting wet Fig. 2 in a cross section,

Fig. 4

in a perspective view of a punching tool,

Fig. 5

in a perspective view of a first embodiment of a punching device with two punching units,

Fig. 6

3 is a perspective view of a first embodiment of a punching device with three punching units,

Fig. 7

3 shows a perspective view of a second embodiment of a punching device with two punching units,

Fig. 8

in a perspective view of a second embodiment of a punching device with three punching units,

Fig. 9

in a perspective view and simplifies the punching of perforations in a material web,

Fig. 10

in a side view and simplifies a punching tool with the material web to be processed,

Fig. 11

in a schematic representation of the course of the rotational speed of the punching tool in different punching situations,

Fig. 12

a block diagram of the control for a punching unit,

Fig. 13

in cross section a punching unit with a first embodiment of a device for transporting the punched parts, and

Fig. 14

in cross section a punching unit with a second embodiment of a device for transporting the punched parts.

If in the following description of the figures and in the claims of "punching" is mentioned, this term is understood to mean both the actual punching (cutting) as well as the perforation, in which the perforated part via weakening points (perforations) with the material web remains temporarily connected and will be dissolved later.

Based on FIGS. 1 to 4 the construction of two different embodiments of punching units 1 and 1 'will be described. The two embodiments differ only in that the punching unit 1 (FIG. Fig. 1 ) a punching tool 2 and the punching unit 1 'two punching tools 2, 2', which are of the same construction has.

The punching tools 2 and 2, 2 'are rotatably connected to a drive shaft 3, which is a spline shaft in the present embodiments. The drive shaft 3 is rotatably mounted about its axis of rotation 3a and connected to a drive device, not shown. Each punching tool 2 or 2 'is rotatably mounted in a tool holder 4 and is displaceable with this in the direction of the axis of rotation 3a of the drive shaft 3 along this in various working positions. The punching tools 2, 2 'cooperate with an impression cylinder 5, which is rotatably mounted about its axis of rotation 5a and is connected to a drive device, not shown. Each punching tool 2, 2 'is mounted in such a way, for example using a radial coupling, that the distance between the punching tool 2, 2' and the counter-pressure cylinder 5 can be set individually ( FIGS. 2 and 3 ). The counter-pressure cylinder 5 has a smooth surface, which is preferably hardened. The rotation axis 3a of the drive shaft 3 and the rotation axis 5a of the impression cylinder 5 are parallel to each other.

The punching tools 2, 2 'are guided by means of a guide 6 (sliding guide), which is formed on the underside of a guide bar 7 and which extends over the entire working width of the punching unit 1. This guide 6 extends parallel to the axis of rotation 5a of the counter-pressure cylinder 5. With the guide 6 a correspondingly shaped guide 8 cooperates, which is formed on the tool holder 4 (see in particular Fig. 3 ). The tool holder 4 and with this also the punching tools 2, 2 'can be moved along the guide 6 translationally between different working positions. By means of an only schematically shown Locking device 9 ( Fig. 3 ), the punching tool 2, 2 'can be locked in any working position. So it is also possible at the in the FIG. 2 shown punching unit 1 'to adjust the mutual distance between the punching tools 2, 2', that is to change.

In the Fig. 4 the construction of the punching tool 2 or 2 'is shown. The punching tool 2 or 2 'has a cylindrical base body 10, on the circumference of a punching tape 11 is releasably held. Preferably, the punching tape 11 is a metal strip which is held by magnetic force on the base body 10. The punching tape 11 is provided with a number of punching dies 12 which are distributed over the length of the punching tape 11. The distances between the punching dies 12 may be the same or different. The dies 12 may have the same shape or different shapes (contours). Positioning pins 13 are provided on the circumference of the main body 10 and, when the stamped strip 11 is mounted, engage in positioning holes 14 on the stamped strip 11. In this way, the punching tape 11 is properly positioned. It is understood that the punching tapes 11 can be fastened interchangeable on the main body 10 in other suitable manner. In this context, for example, the already mentioned DE 103 14 959 A1 and DE 298 05 004 U1 directed. It is also conceivable to arrange a plurality of punched strips 11 on the circumference of the main body 10.

Per punching unit 1, 1 ', more than two punching tools 2 can be provided on the drive shaft 3.

Based on FIGS. 5 to 8 Embodiments of punching devices 15 and 16 are described, the two Punching units 1a, 1b or three punching units 1a, 1b, 1c, which are seen in the direction of movement A of a material web 17 to be processed, arranged one behind the other. The punching units 1a, 1b, 1c correspond structurally in the FIGS. 2 and 3 Punching unit shown 1 'and each have two punches 4 on For corresponding parts are therefore in the FIGS. 5 to 8 the same reference numerals as in the FIGS. 1 to 4 ,

The in the FIGS. 5 and 6 shown embodiments differ only by a different number of punching units 1a, 1b and 1a, 1b, 1c from each other. In both embodiments, each of the punching tools 2 of a punching unit 1a relative to the punching tools 2 ', 2 "of the other punching unit 1b and 1c in the direction of the axis of rotation 3a of the drive 3, that is, in a direction that transversely, in particular at right angles to The punching tools 2 'of the punching unit 1b are likewise offset with respect to the punching tools 2 "of the punching unit 1c. This means that the punching tools 2 of the punching units 1a, 1b, 1c process different regions of the material web 17.

In the embodiment according to Fig. 5 serve the punching tools 2 of the punching unit 1a to punch in the section 17a of the web 17 holes 18, 18 ', for example, serve as Ablagelochung, while with the tools 2' of the second punching unit 1b holes 18, 18 'in the Materialbahnabachnitt 17b be punched. As the Fig. 5 shows, in both material web sections 17a, 17b different Punches are made. Thus, in the material web section 17a, the regions a and c are provided with holes 18, 18 ', while the region b has no punching. In contrast, in the material web section 17b, the perforations 18, 18 'are mounted in the regions e and f, while the region d has no punching.

The same applies mutatis mutandis to the embodiment according to Fig. 6 in which three sections 17a, 17b, 17c of the material web 17 can be processed differently. The tools 2 of the punching tool 1a process the material web portion 17a, the punching tools 2 'of the punching tool 1b, the material web portion 17b and the punching tools 2 "of the punching tool 1c the material web portion 17c.

as the Fig. 6 shows adjacent areas a, d, g and b, e, h and c, f, e of the web portions 17a, 17b, 17c processed differently.

The embodiments according to the FIGS. 7 and 8 Also differ only by a different number of punching units 1a, 1b and 1a, 1b, 1c from each other. In both embodiments, a punching tool 2, 2 ', 2 "of a punching unit 1a, 1b, 1c is seen in the direction of movement A of the material web 17, aligned with a punching tool 2, 2' or 2" of another punching unit 1a, 1b or 1c.

When in the Fig. 7 In the embodiment shown, one of the punching tools 2 of the punching unit 1a is aligned with a punching tool 2 'of the other punching unit 1b. Each pair of aligned punching tools 2, 2 'brings holes 18, 18' in one the two web portions 17a, 17b. In this case, each of the two holes 18 and 18 ', which are mounted in a material web area a, c, d and f, from the punching tool 2 of the punching unit 1a and the other of the two holes 18, 18' from the punching tool 2 'of the other punching unit 1b punched.

In the embodiment according to Fig. 8 serve the aligned punching tools 2, 2 "of the punching units 1a, 1c for punching perforations 18 in the web portion 17a, while the successive punching tools 2, 2 'of the punching units 1a, 1b for punching perforations 18' in the web portion 17b serve punched holes 2 ', 2 "of the punching units 1b, 1c are punched out in the material web section 17c by the perforations 18. In this way, the individual regions a, d, g or b, e, h or c, f, i of the material web sections can be punched out 17a, 17b, 17c edit different from each other.

It is understood that when in the FIG. 8 In the embodiment shown, the punching tools 2, 2 ', 2 "can also be aligned with each other in a different arrangement than shown.

Be with in the FIGS. 5 to 8 shown embodiments of the punching tools 2, 2 ', 2''punching 11 used with differently shaped punching dies 12, so can be on the web portions 17a, 17b, 17c punching produce with different contours.

Further, it is possible in the same punching device based on the FIGS. 5 and 6 explained mutual Arrangement of the punching tools 2, 2 ', 2''with the basis of FIGS. 7 and 8 In such a solution, a part of the punching tools 2, 2 ', 2 "is aligned as described and a part of the punching tools 2, 2', 2" offset laterally against each other ,

The on hand of the Fig. 5 to 8 The arrangements of the punched holes (holes) 18, 18 ', 18 ", ie the punched images in the regions a-i of the material web 17, can be changed without great expenditure of time, for example the distances between the punched holes 18, 18', 18". Seen in the direction of movement A of the material web and / or the number of punches 18, 18 ', 18 "per material web area a - i be changed.

In all described embodiments, the material web 17 is moved in a manner not shown, but known per se with a constant or a changing speed v forward. The impression cylinder 5 of each punching unit 1 is driven at a peripheral speed which corresponds to the moving speed v of the material web 17. In each punching unit 1, the drive shaft 3 is driven independently of the impression cylinder 5. This means that the drive shaft 3 can be driven at a rotational speed which differs from the peripheral speed of the impression cylinder 5 and thus from the movement speed v of the material web 17. This makes it possible to adapt the punchings to be applied in the material web 17 during operation, as described below with reference to FIG FIGS. 9 to 11 will be explained.

The provided with punches 18 web 17 is then further processed and thereby cut or folded in a conventional manner in the longitudinal and / or transverse direction.

With reference to the FIGS. 9 to 11 Now an essential aspect of the subject invention is described, namely the possibility to punch in the web 17 holes 18 whose mutual distance does not correspond to the distance of the punching dies 12 of the punching tape 11.

In the Fig. 9 is in one of the representation of Fig. 4 corresponding representation of a punching tool 2 with unwound punching tape 11 shown. The uniform distance in the present case between the punching dies 12 of the punching plate 12 is designated by x. In the Fig. 9 Furthermore, a web of material 17 is shown in the holes 18, 18 '18 "to be punched out whose mutual distances y and y' from the distances x between the punching dies 12 deviates.

In the side view of Fig. 10 in which the punching tool 2 is shown only very schematically and the material web 17 with the holes 18, 18 ', 18' attached or to be attached, the distances x and y between the punching dies 12 and between the holes 18, 18 ', 18th '' registered. In this Fig. 10 is the direction of rotation (desired direction of rotation) of the punching tool 2 with B and the working diameter, which is determined by the cutting of the punching dies 12, denoted by d. By means of these cutting of the punching tools 2 or by the working diameter d, a working circumference U of the punching tool 2 is determined. In the Fig. 10 where s is an angle that defines a synchronous area. Each punching tool 12 is associated with such a synchronous area s. The angle denoted by r is called dynamic range. Such a dynamic range is located between each die 12.

In order to punch the holes 18, 18 '18 "with unequal mutual distances y, y', the punching tool 2 is driven in each case in the synchronous region s with a peripheral speed at the working circumference U, which is the same as the movement speed v of the material web 17. In this synchronous region In the dynamic ranges r, the peripheral speed of the punching tool 2 can be varied and the distance y, y 'between the just punched hole 18 or 18' and the next hole 18 to be punched 'or 18 "are adjusted accordingly. This should now be based on the Fig. 11 be explained.

In the FIGS. 11a to 11d diagrams are shown for various punching operations, in each of which the angular velocity ω of the punching tool 2 is recorded as a function of the time t. In these diagrams, the velocity profiles are shown in two synchronous areas s, in each of which a punching takes place, and in an intermediate dynamic range r. Above the diagrams, the punching tool 2 is shown schematically in its various respective rotational positions. With ω1 that angular velocity of the punching tool 2 is designated, which corresponds to a peripheral speed of the punching tool 2, with the speed of movement v of Material web 17 matches. That is, in the synchronous areas s, the punching tools 12 run synchronously with the material web 17. The situation is different in the dynamic range r, in which the angular velocity ω of the punching tool 2 can be selected independently of the movement speed v of the material web 17, adapted to the ratio the distances y, y 'between the perforations 18, 18', 18 "to the distance x between the punching 12th

In the diagram of Fig. 11a is the time course of the angular velocity ω of the punching tool 2 shown for the situation in which the distance y, y 'between two perforations 18, 18', 18 "is smaller than the distance x between the punching forms 12. In this case, the angular velocity ω are briefly increased in the dynamic range r, that is, the punching tool 2 must be accelerated and then delayed back to the angular velocity ω1.

If the distance y, y 'between two perforations 18, 18', 18 "is the same as the distance x between the punching dies 12, the punching tool 2 is still driven in the dynamic range r at the angular velocity ω1, as shown in the diagram 11b. In this case, the punching tool 2 neither accelerated for a short time nor delayed for a short time.

In the diagram of Fig. 11c is the time course of the angular velocity ω of the punching tool 2 shown for the situation in which the distance y, y 'between two perforations 18, 18', 18 "is greater than the distance x between the punching molds 12. In this case, the angular velocity ω in the dynamic range r for a short time be reduced, that is, the punching tool 2 must be delayed and then accelerated again to the angular velocity ω1.

If no perforation (punching) has to be applied in a region of the material web 17 (see, for example, the material web regions b and d in FIG Fig. 5 ), the punching tool 2 is briefly stopped after punching within the subsequent dynamic range r and accelerated again to the angular velocity ω1 before reaching the following synchronous range s, as shown in the diagram Fig. 11d is shown.

In certain cases, in the dynamic range r, the direction of rotation of the punching tool 2 is swept, i. the punching tool 2 is briefly rotated in the reverse direction.

As described, the distance y between two punches 18, 18 ', 18 "can be influenced by controlled acceleration or deceleration of the punching tool 2 in the dynamic range r. In this way, it is possible to set spacings y between the punched cuts 18, 18', 18 '. to obtain, which do not correspond to the distances x between the punching dies 12 of the punching tape 11. Just by changing the peripheral speed of the punching tool 2 in the dynamic range r different punching images can be generated without mechanical changes are necessary.

Thus, the angular velocity ω of the punching tool 2 as based on the Fig. 11 If necessary, can be changed so that the punches 18 is mounted in the web 17 at the desired locations, the drive for the punch 2 must be controlled accordingly. In the Fig. 12 is a block diagram of a corresponding control device shown in this Fig. 12 is in one of the Fig. 3 corresponding representation, a punching unit 1 is shown, of which only the essential components in connection with the control are provided with the corresponding reference numerals.

In this Fig. 12 is the machine control 19 and the drive control for driving the drive shaft 3 of the punching tool 2 denoted by 20. The machine control 19 is connected to a sensor 21, in the present case a contrast sensor, which scans marks applied to the material web 17 and supplies corresponding scanning signals to the machine control 19. The machine controller 19 is further provided with a control valve 22 of a Abtransporteinrichtung for carrying away the punched parts (punched), based on the Fig. 13 will be explained in more detail, and connected to the drive control 20.

In the machine control system 19, the information regarding the position of the punchings 18 to be applied in the material web 17 and the movement speed v of the material web 17 is stored. From these quantities, the angular velocity ω1 is derived.

On the basis of the scanning signals obtained by the sensor 21 and the data stored in the machine control 19, the machine controller 19 now determines with which angular velocity ω the punching tool 2 must be driven in the dynamic range r, so that the punching (s) take place in the correct position. In addition, the machine control 19 controls the control valve 22 of the removal device at the right time.

In the FIGS. 13 and 14 are in the Fig. 3 corresponding sectional views of two different embodiments of Abtransporteinrichtungen for the punched parts, that is, the punched, shown.

In the embodiment according to Fig. 13 the diecuts are released and transported away by means of a timed compressed air blast from the web 17. The detached punched pieces can be sucked off or fed to a collection container arranged below the material web. The Abtransporteinrichtung 23 used to dissolve the punched out is shown only very schematically and has already in connection with the Fig. 12 mentioned control valve 22. The inlet of the control valve 22 is connected to a compressed air connection 26, which is connected to a compressed air source, not shown. On the outlet side, the control valve 22 is connected to a blowing nozzle 25.

When the control valve 22 is actuated by the machine control 19 (FIG. Fig. 12 ), the connection between the compressed air port 24 and the tuyere 25 is opened for a short time. The result is a compressed air shock 26, which blows the punched product from the web 17. It is important that the control of the control valve 22 takes place at the right time, so that the compressed air surge 26 is then generated when the punched product is below the tuyere 25.

When in the Fig. 14 shown Abtransporteinrichtung 27, which is also shown only very schematically, the punched in a suction region 28, which in the Fig. 10 shown synchronous range s corresponds, by means of Vacuum sucked on the punching tool 2. During the further rotation of the punching tool 2, the punched product is produced in a blow-off region 29 which is in a dynamic range r (FIG. Fig. 10 ), again detached from the punching tool 2, either blown away by means of overpressure and / or sucked away by means of negative pressure. The detached from the punching tool 2 punched pieces are led away via a suction line 30.

It is understood that the described Abtransporteinrichtungen 23 and 27 in both a punching unit 1 according to Fig. 1 as well as in a punching unit 1 'according to Fig. 2 can be provided. It is also possible to transport the punched items both a removal device 23 according to Fig. 13 as well as a removal device 27 according to Fig. 14 provided. This means that in one and the same punching tool 2, the diecuts are transported away in two different ways.

Another important aspect of the present invention is the following:

A punching unit 1, as in the Fig. 1 , of the Fig. 2 or in the FIGS. 5 to 8 is shown, has at least one punching tool 2, which cooperates with a rotatably mounted, drivable impression cylinder 5 and which is arranged on a rotatably mounted, drivable drive shaft 3. This punching unit 1 further has a guide 6 extending in the direction of the rotation axis 3a of the drive shaft 3 and separated from this drive shaft 3, along which the punching tool 2 is guided during adjustment and which extends parallel to the longitudinal axis 5a of the counter-pressure cylinder 5.

This special embodiment of the punching unit 1, as defined in claim 15, has the advantage that the drive shaft 3 has no leadership tasks to meet and must be designed only to transmit the drive power. This makes it possible to use lighter drive shafts 3 and thus the masses, which in a change in the drive speed of the punching tools 2 in the dynamic range r (FIG. Fig. 10 ) must be accelerated or retarded, as small as possible.

As described, a punching unit 1, 1 'or a plurality of punching units 1a, 1b, 1c arranged one behind the other are used, of which each punching unit has one or more punching tools 2 which are adjustable along their drive shaft 3 and can be locked in their respective working positions. This arrangement makes it possible to convert the punching units 1 in a simple manner and with relatively little expenditure of time in such a way that the arrangements of the parts to be punched out, that is to say the punched pictures, are different. By exchanging the punching tapes 11, which is very easily possible, both the Stamping images but also the shape (contour) of auszustanzenden parts are changed.

The driving of the punching tools 2 independently of the impression cylinder 5 expands the field of application of the punching unit 1, as the basis of the FIGS. 9 to 11 has been explained.

In a further embodiment, the punching tool 2 or the punching tools 2, 2 'are mounted in such a way that they can be moved in the direction of the impression cylinder 5 for a short time. This allows the punching tools 2, 2 'also in the synchronous area s with a To drive peripheral speed, which differs from the peripheral speed of the impression cylinder 5 and the movement speed v of the web 17. A short-term lifting of a punching tool 2, 2 'from the counter-pressure cylinder 5 and the material web 17 makes it possible to deactivate certain punching dies 12 when rotating the punching tool 2, 2', ie not to bring it into contact with the material web 17 and thus to skip a punching 18 , This means that the sequence of punches 18, 18 ', 18 "mounted on the material web 17 in the direction of movement A of the material web 17 differs from the sequence of the punching dies 12 of the punching tool 2, 2' in its circumferential direction.

Claims (15)

Device for punching moving material webs, having the following features: at least two punching units (1a, 1b), which are arranged one behind the other in the direction of movement (A) of the material web (17), Each punching unit (1a, 1b) has at least one punching tool (2) which cooperates with a rotatably mounted, drivable impression cylinder (5) which is arranged on a rotatably mounted, drivable drive shaft (3) and in the direction of its longitudinal axis (3a) its position is adjustable and can be locked in different working positions, Each punching tool (2) has a cylindrical base body (10) on the circumference of a punching belt (11) is interchangeably attached, which is provided with at least one punching die (12). Apparatus according to claim 1, characterized in that each punching unit (1a, 1b) has two or more on the drive shaft (3) arranged punching tools (2) whose mutual distance is adjustable. Apparatus according to claim 1 or 2, characterized in that in a punching tool (2) per punching unit (1a, 1b) the punching tool (2) of a punching unit (1a) relative to the punching tool (2 ') of the other punching unit (1b) in one across to In the case of two or more punching tools (2) per punching unit (1a, 1b), at least one of the punching tools (2) of one punching unit (1a) opposite one of the punching tools (2) is displaced. 2 ') of the other punching unit (1b) is offset in a direction transverse to the direction of movement (A) of the material web (17). (Figures 5 & 6) Apparatus according to claim 1 or 2, characterized in that in a punching tool (2) per punching unit (1a, 1b) the punching tool (2) of a punching unit (1a) in the direction of movement (A) of the material web (17) seen with the punching tool second at least one of the punching tools (2) of one punching unit (1a) in the direction of movement (A) of the material web (17) is aligned with the other punching unit (1b) or with two or more punching tools (2) per punching unit (1a, 1b) ) is aligned with one of the punching tools (2 ') of the other punching unit (1b). (Figs. 7 & 8) Device according to one of claims 1 to 4, characterized in that the punching tool (2) or at least a part of the punching tools (2) of a punching unit (1a) for processing a first, in the direction of movement (A) of the material web (17). extending portion (17a) of the material web (17) and the punching tool (2 ') or at least a portion of the punching tools (2') of the other punching unit (1b) for processing another, also in the direction of movement (A) of the material web (17) extending portion (17b) of the web (17) serve. Device according to one of claims 1 to 4, characterized in that the punching tool (2) or at least a part of the punching tools (2) of a punching unit (1a) and the punching tool (2 ') or at least a part of the punching tools (2 ') of the other punching unit (1b) for processing the same, in the direction of movement (A) of the material web (17) extending portion (17a and 17b) of the web (17) are used. Device according to one of Claims 1 to 6, characterized in that each punching unit (1a, 1b) has a guide (6) extending in the direction of the axis of rotation (3a) of the drive shaft (3), along which the punching tools ( 2) are guided during the adjustment and which extends parallel to the longitudinal axis (5a) of the impression cylinder (5). Device according to one of claims 1 to 7, characterized in that the punching units (1a, 1b) extend substantially over the entire width of the material web (17). Device according to one of claims 1 to 8, characterized in that the impression cylinder (5) have a smooth surface, which is preferably cured. Device according to one of claims 1 to 9, characterized in that the impression cylinder (5) are drivable at a peripheral speed, the Movement speed (v) of the material web (17) corresponds. Device according to one of claims 1 to 10, characterized in that each punching tool (2, 2 ') is mounted such, for example by using a radial coupling, that the distance between the punching tool (2, 2') and the impression cylinder (5) adjustable is. Device according to one of claims 1 to 11, characterized in that each punching tool (2) is provided with a negative pressure device (27) for temporarily holding and later delivering the parts of the web (17) punched out parts. Device according to one of claims 1 to 11, characterized in that each punching tool (2) is associated with a Abtransporteinrichtung (23) for Wegtransportieren of the material web (17) punched parts, by means of which the punched parts by means of a jet (26) of a gaseous Medium, preferably air, are removed from the web (17) and transported away. Device for punching moving material webs, having the following features: a punching unit (1), the punching unit (1) has at least one punching tool (2) which is provided with a rotatably mounted, drivable impression cylinder (5) cooperates and which is arranged on a rotatably mounted, drivable drive shaft (3), a punching tool (2) associated Abtransporteinrichtung (23) for wegtransportieren of the material web (17) punched parts by means of the punched out parts by means of a jet (26) of a gaseous medium, preferably air, from the material web (17) dissolved out and transported away become. Device for punching moving material webs, having the following features: a punching unit (1), the punching unit (1) has at least one punching tool (2) which cooperates with a rotatably mounted, drivable impression cylinder (5) and which is arranged on a rotatably mounted, drivable drive shaft (3), the punching unit (1) has a guide (6) extending in the direction of the axis of rotation (3a) of the drive shaft (3), along which the punching tool (2) is guided during the adjustment and parallel to the longitudinal axis (5a ) of the impression cylinder (5).

Images