EP1837136A1 - Device and method for cutting out flat material blanks in sheets of flat material - Google Patents

Abstract

The device has a cutting roller (2) and an impression roller (3) forming a roller gap for inserting a flat sheet (B) for cutting a flat material layout (Z). A resting grid (R) and an internal opening (I) lying in between the layout are formed as a residue material. The rollers are designed as suction rollers with cladding surfaces (6, 7) having suction air openings (8, 9). Suction air loading of the rollers takes place such that the rollers and the material are transportable directly. The roller (2) is designed as an embossing roller for producing embossments and pre-creasing in the layout. An independent claim is also included for a method for cutting a flat material lay-out on a flat sheet.

Description

I. Field of application

The present invention relates to an apparatus and a method for cutting flat material blanks from sheets of flat material. These may in particular be blanks made of thin, relatively flexible cardboard, such as folding carton blanks for drug packages or the like.

II. Technical background

• Stanzen und Prägen der Flachmaterialzuschnitte
• Herausdrücken etwaiger Innenausschnitte aus den Bögen
• Herausdrücken der Flachmaterialzuschnitte aus dem Gitter der Bögen und anschließendes Ablegen der Flachmaterialzuschnitte
• Entsorgung des verbleibenden Restgitters

Folding carton blanks for folding cartons, which play an important role, for example, in the pharmaceutical industry for packaging medicines, are produced in the known flat-bed punching process from a starting material which is present in the form of one-sided printed or still to be printed sheets of cardboard. The following process steps are carried out on the sheets in separate machine stations:

• Punching and embossing the flat material blanks
• Push out any inner cutouts from the sheets
• Pushing out the flat material blanks from the grid of the sheets and then depositing the flat material blanks
• Disposal of the remaining grid

The disadvantage here is, on the one hand, that a separate station is available for each of the aforementioned method steps. On the other hand, the transport of the sheets between the individual stations is relatively expensive. Moreover, it is extremely difficult in the known flat bed stamping method to dispose of the waste in the form of the inner cutouts and the residual grid targeted by suction, as too strong Entsorgungssaugluft would attack on the surface of Faltschachtelzuschnitte and would dispose of too strong suction as well. The flat bed process therefore relies on the waste to fall into a suction system in a free fall where it is safely disposed of.

From the DE 101 56 664 A1 It is known to cut out folding carton blanks rotatively from sheets. For this purpose, two pairs of rollers are used, each consisting of a separating roller and a counter-roller. With the help of the first pair of rollers, first internal cutouts are punched out of the flat material blanks. During the transport of the sheets from the first pair of rolls to the second pair of rolls, the waste of the inner cutouts are sucked by means of a suction device. Subsequently, the outer contours of the flat material blanks are cut out by means of the second pair of rollers. With the help of a suction and storage cylinder and a Abschälbleches the cut flat material blanks are finally separated from the skeleton of the sheets.

The known device for rotary cutting of flat material blanks from sheets has the disadvantage of a relatively large expenditure on equipment. It requires a total of five rollers for cutting and separating the blanks from or from the sheets.

III. Presentation of the invention a) Technical task

It is therefore an object of the present invention to provide a device or a method for cutting or punching flat material blanks from flat material sheets, which is associated with the lowest possible expenditure on equipment and at the same time allows easy disposal of the resulting waste.

b) Solution of the task

This object is achieved by means of a device having the features of claim 1 or by means of a method having the features of claim 9. Further embodiments of the present invention will become apparent from the dependent claims.

According to the invention, a device for cutting out flat material blanks from sheets of sheet material is proposed which has a cutting roller and a mating roller cooperating therewith, between which there is a nip in which the flat material sheets for cutting out the flat material blanks can be inserted to form a residual material, and in which both the cutting roll as well as the counter roll are each formed as a suction roll with a lateral surface, which has a plurality of Saugluftöffnungen, the Saugluftbeaufschlagung the cutting and the counter roll is such or controllable that immediately after cutting the flat material blanks on the outer surface of the cutting or counter-roll and the residual material on the lateral surface of the counter or cutting roller - that is on the corresponding other roller - can be transported further. For the purposes of the present invention, the residual material may be either only the skeletal grid of the flat material sheet or, if in and / or between the flat material blanks Inner cutouts are provided - to act on the skeleton and in addition the waste snippets of the inner cutouts.

The advantage of the invention is that all outer and inner contours of the flat material blanks are cut out with a single pair of rollers and at the same time the flat material blanks are separated from the residual material, in particular the residual grid. The expenditure on equipment is correspondingly low compared to the prior art. A further transport of the flat material sheets for the purpose of further production steps after leaving the nip is no longer necessary because only the residual material of the waste disposal is supplied. A blank sheets carrying the blanks no longer exists after the cutting process according to the invention.

Along the line of contact between the cutting roller and the mating roller, both the cutting and stamping process and the taking over of the flat material blanks by one roller and the taking over of the remainder material by the other roller take place. Which of the two rolls takes over the flat material blank and which of the two rolls takes over the residual material can be selected as needed in the context of the present invention. It is essential to the invention that after the cutting out of the flat material blanks, no joint transport of the blanks and of the residual material takes place any more. As a result, according to the invention, a counter-cutting strip to be separately retained in the machine is also eliminated. Instead, this invention is arranged on the lateral surface of the counter roll.

Saugluftöffnungen and Saugluftkanäle in cutting or transport rollers for the transport of flat material blanks are known in the art. In order to apply in the context of the present invention, adapted to the geometry of the flat material blanks or the residual material areas of the lateral surface of the cutting roller or the lateral surface of the backing roll with suction air, suction-controlled suction channels can be provided in the rollers whose Saugluftbeaufschlagung be controlled by means of suitable control valves can. Alternatively, it is conceivable, those suction air openings of the cutting roller or the counter-roll, on which no suction effect is desired due to the geometry of the flat material blanks or of the residual material, to be masked with a tape or the like. Further alternatively Saugluftöffnungen the cutting roller or the counter roll, where due to the geometry of the flat material blanks or the residual material no suction is desired to be covered with the cutting tools supporting foil sheets, which are detachably mounted on the lateral surfaces of the cutting or counter roll.

In connection with the use of control valves to Saugluftbeaufschlagung the suction channels, it is inventively advantageous that only one control valve is required for each or each of the two rollers. This advantage results from the fact that a common further transport of the flat material blanks and the residual material on the lateral surface of one and the same roller does not take place. Would take place a common onward transport in the aforementioned sense, it would be necessary to bring about the desired separation of the flat material blanks of the residual material, the respective Flachmaterialzuschnitt associated Saugluftöffnungen on the one hand and the residual material associated Saugluftöffnungen other hand, in the circumferential direction of the roller over different lengths angular or transport routes to apply suction air. The latter in turn would make it necessary to arrange two different control valves on the roller, which complicates the suction air system and may be undesirable for reasons of space.

Instead, the present invention makes it possible, especially in the area of the bearings of each of the two rollers, to save space by providing only a single control valve per roller. In this case, the control valve of the cutting roller controls only their Saugluftbeaufschlagung for holding, transporting and dispensing the flat material blanks while the control valve of the mating roll exclusively their Saugluftbeaufschlagung for holding, transporting and dispensing the residual material controls or vice versa.

It is particularly advantageous if the cutting roller is designed as a combined cutting and embossing roller for cutting out the flat material blanks and at the same time generating embossments and / or preliminary breaks in the flat material blanks. The embossings to be produced can be logos or inscriptions on the one hand and embossed pre-break lines on the other hand. The latter represent material weakenings in the form of creases in the flat material blank, along which subsequent folding operations in the context of folding carton production take place from the flat material blanks. If the cutting roller is formed as a combined cutting and embossing roll, so advantageously eliminates a separate embossing station in the manufacturing machine and the device of the invention takes over the functions cutting, embossing and separating the flat material blanks of the residual material (Nutzentrennung).

Cutting roller and counter roller are pressed against each other by means of suitable devices to produce the required cutting and / or embossing forces in the nip. The line of action of the corresponding pressing force can pass through the centers of rotation of the cutting and counter-roller. According to the invention, the cutting and counter-rollers can be mounted and guided with play in the direction perpendicular to the aforementioned line of action. In this case, it is advantageous not to arrange the two rollers such that the aforementioned line of action extends exactly through both centers of rotation of the rollers. Instead, the rollers can be arranged such that their centers of rotation are offset from each other in the direction perpendicular to the line of action. As a result, the two rollers are always in a stable equilibrium position. In an arrangement with exactly by both centers of rotation extending line of action would set a labile equilibrium, which would lead during operation of the device according to the invention to a swinging or rattling of the rollers relative to each other and thus may cause poor or unusable cutting or embossing results. The transport of the flat material sheets in the nip between cutting roller and counter-roller can be done either only with the help of separate transport devices or additionally with the help of the cutting or counter-roller itself. For this the rollers are arranged offset to one another in such a way that one of the two rollers with their suction surface acted upon by suction absorbs the flat material sheets at the front end thereof and transports them further into the nip. Depending on requirements, additional guide means can be provided which ensure that the sheets of sheet material are pressed into abutment against the lateral surface of one of the two rollers and transported to the nip.

According to the invention, a method is also proposed for cutting out flat material blanks from flat material sheets, in which the flat sheets for cutting the sheet blanks are inserted into a nip between a cutting roll and a mating roll cooperating therewith to form a residual material and immediately after cutting the sheet blanks held by suction on the lateral surface of the cutting or counter-roller and further transported on this while the residual material is held by suction on the lateral surface of the counter or cutting roller and transported on this, so that immediately after cutting takes place a separation of the flat material blanks of the residual material ,

c) embodiments

Fig. 1:

eine erste Ausführungsform einer erfindungsgemäßen Vorrichtung;

Fig. 2:

eine zweite Ausführungsform einer erfindungsgemäßen Vorrichtung;

Fig. 3:

eine dritte Ausführungsform einer erfindungsgemäßen Vorrichtung;

Fig. 4:

eine Schnittdarstellung des Walzenspaltes, die verschiedene zeitlich nacheinander auftretende Situationen in dem Walzenspalt zeigt; und

Fig. 5:

eine beispielhafte Anordnung der Flachmaterialzuschnitte auf einem Flachmaterialbogen.

Several embodiments of the present invention will be described below by way of example with reference to the accompanying drawings. Show it:

Fig. 1:

a first embodiment of a device according to the invention;

Fig. 2:

a second embodiment of a device according to the invention;

3:

a third embodiment of a device according to the invention;

4:

a sectional view of the nip, showing different sequential situations in the nip; and

Fig. 5:

an exemplary arrangement of the flat material blanks on a flat material sheet.

Fig. 1 shows a first embodiment of a device 1 according to the invention in a schematic sectional view. It is a above a transport plane T arranged cutting roller 2 and a below the transport plane T arranged counter roll 3 can be seen. Cutting roller 2 and counter-roller 3 preferably have the same roll diameter.

In all the embodiments shown, the cutting roller 2 is designed as a combined cutting and embossing roller. For the sake of simplicity, however, it will hereinafter be referred to as a cutting roller. As can be seen in the sectional representation according to FIG. 4, it carries on its lateral surface 6 a closed circumferential cutting blade 10, which in plan view corresponds to the outline geometry of the flat material blanks to be produced. Furthermore, the lateral surface 6 of the cutting roller 2 carries a plurality of male parts 11 for producing pre-break or fold lines in the flat material blanks. As can also be seen in Fig. 4, the counter-roller 3 carries on its lateral surface 7 cooperating with the cutting blade 10 and correspondingly closed circumferential counter-cutting bar 12 and the dies 11 cooperating with the dies 13th

Cutting roller 2 and counter-roller 3 may be formed as solid rollers, so that the cutting blade 10 and the counter-cutting bar 12 and the male part 11 and the dies 13 are integrally formed on them. However, the alternative is to form the cutting blade 10 and the male part 11 or the counter cutting strip 12 and the dies 13 on film sheets, which can be releasably secured to the lateral surfaces 6 and 7 of the cutting roller 2 and counter-roller 3. The cutting roller 2 is thus characterized by having the active cutting or embossing tools, while the counter-roller 3 is provided with the passive cutting or embossing tools. In all the embodiments described, the cutting roller 2 can of course also be designed as a pure cutting roller, so that it only the active cutting tools carries, while then the counter roll 3 carries only the passive cutting tools.

In Fig. 1, the axially extending in the cutting roller 2 and the counter-roller 3 Saugluftkanäle 14 and 15 can be seen. Each suction air channel 14 or 15 is connected via a plurality of substantially radially extending suction air holes 16 and 17 with the lateral surface 6 and 7 in fluid communication. The Saugluftbohrungen 16 and 17 open in turn in Saugluftöffnungen 8 and 9 in the lateral surfaces 6 and 7. In this way arise on the lateral surface 6 and 7 in the axial or viewing direction of FIG. 1 extending suction rows, each consisting of a Variety of suction air openings 8 and 9 exist.

A flat sheet B of the type shown in Fig. 5 is fed to the nip between the cutting roller 2 and the counter roller 3 in Fig. 1 from the right in the transport plane T by means of a transport device 18, which is preferably a Saugbandtransporteinrichtung. The clockwise rotating cutting roller 2 and counterclockwise rotating counter roller 3 pull the sheet of sheet material B into the nip. There, on the one hand, with the aid of the cutting blade 10 shown in FIG. 4 and the counter cutting strip 12 shown in FIG. 4, the contours of the flat material blanks to be produced are cut out or punched out and, on the other hand, with the help of the patrices 11 and matrices 13 shown in FIG Form generated by creases.

The cut-out contour K of the flat material blanks Z is shown in FIG. 5 by solid lines. The flat material blanks Z shown are folding carton blanks made from cardboard for the production of drug boxes. Of course, in the context of the present invention, flat material blanks Z can also be produced for any other purposes, in particular packaging purposes. The Vorbruchlinien V along which is folded in the later production of the drug boxes and the Accordingly, the later edges of the drug box form, are shown in Fig. 5 with dashed lines. From the flat material sheet B shown in Fig. 5, three rows of flat material blanks Z were cut out, with five flat material blanks Z being arranged in each row. In FIG. 5, the flat material blanks Z surrounding and not hatched in the outer region of the flat material sheet B are referred to as residual grids R. The material lying between the individual rows of flat material blanks Z, which is shown hatched in FIG. 5, are so-called inner cutouts 1 of the flat material sheet B. Interior cutouts in the form of windows and the like can also be arranged in the flat material blanks Z themselves. The skeleton R and the inner cutouts I together form the residual material to be disposed of.

As can be seen in Fig. 1, after leaving the nip, the flat material blanks Z adhere to the lateral surface 6 of the cutting roller 2. They are transported on the lateral surface 6 in the embodiment shown by an angular distance of about 90 °, before they to a Transport roller 19 are passed, which is also designed as a suction roller. Alternatively, any other type of transport device for taking over the flat material blanks Z of the cutting roller 2 is conceivable. The transport roller 19 transports the flat material blanks Z to a tray or possibly to a subsequent station of the production machine, in which a further production step is performed.

The skeleton R and the inner cutouts I are held after leaving the nip by suction on the lateral surface 7 of the backing roll 3 and fed to a waste disposal. Preferably, in Fig. 1, left below the mating roll 3, a dense and low-loss suction funnel is arranged, which can act by means of suction targeted to the waste material to be disposed.

The Saugluftbeaufschlagung the Saugluftöffnungen 8 of the cutting roller 2 is such that only such Saugluftöffnungen 8 develop a suction, which are within the contours K of the flat material blanks Z. Accordingly takes place Saugluftbeaufschlagung the Saugluftöffnungen 9 of the backing roll 3 such that only such Saugluftöffnungen 9 develop a suction that are outside the contour K of the flat material blanks Z and consequently attack with the sucked through suction air exclusively on the skeletal grid R and the inner cutouts I.

As indicated schematically in FIG. 1, the cutting roller 2 and the counter-roller 3 are mounted horizontally positively guided in the context of a certain play. In order to ensure a stable equilibrium position, the center of rotation M _{S of} the cutting roller 2 and the center of rotation M _{G of} the counter roller 3 are not exactly vertically above each other, but are offset in the horizontal direction by an offset ΔH to each other. The line of action of the pressing force with which the cutting roller 2 is pressed in Fig. 1 from top to bottom against the backing roll 3, therefore, does not pass through the center of rotation M _{G of} the backing roll 3, but right past him. The offset AH is less than 10% of the diameter of the cutting roll 2 or counter roll 3, preferably less than 5% of the roll diameter, more preferably less than 2% of the roll diameter. With the aid of the offset ΔH, it is avoided that the cutting blade 10 and the male parts 11 make rattling vibrations relative to the counter cutting strip 12 and the dies 13 during the cutting or embossing operation, thereby causing bad or useless cutting and embossing results. In Fig. 1, the cutting roller 2 is always pressed to the right and the counter roll 3 always to the left in a stable equilibrium position due to the offset .DELTA.H.

Fig. 2 shows the sectional view of a second embodiment of a device according to the invention 1. The same reference numerals as in Fig. 1 indicate like parts. Notwithstanding the embodiment according to FIG. 1, here the counter-roller 3 located below the transport plane T is offset by approximately 3/4 of the roller diameter to the right with respect to the cutting roller 2. An offset ΔH not shown in FIG. 2 in the sense of FIG. 1 is also provided in this embodiment. The line of action of the pressure force is inclined here by about 45 ° relative to the horizontal. The in the direction perpendicular to the line of action of the pressure force playfully mounted cutting roller 2 and counter-roller 3 are always in a stable equilibrium position.

As can be seen, initially takes over the suction air acted upon lateral surface 7 of the backing roll 3, the flat sheets B of the transport device 18. On the lateral surface 7 adhering the flat sheets B are then fed to the nip between cutting roller 2 and counter roll 3. There, as in the embodiment of FIG. 1, the cutting and embossing operations according to the invention take place. To support the installation of the flat material sheets B on the lateral surface 7 of the counter-roller 3, a guide device 4 is provided in the area in front of the nip. Your counter roller 3 facing surface is preferably at least partially adapted to the curvature of the lateral surface 7.

In FIG. 2, therefore, the counter roller 3 carrying the passive cutting or embossing tools takes over the transport of the flat material sheets B to the nip. Alternatively, it is conceivable to exchange the cutting roller 2 and the counter roller 3, so that then the cutting roller 2 carrying the active cutting or embossing tools takes over the transport of the flat material sheets B to the roller nip.

3 shows the sectional view of a third embodiment of a device 1 according to the invention. The same reference numerals denote the same parts as in the embodiment according to FIG. 1. Deviating from the first or second embodiment, the cutting roller 2 in FIG. 3 is retarded by approximately half the roll diameter offset to the right with respect to the counter-roller 3. An offset ΔH not shown in FIG. 3 in the sense of FIG. 1 is likewise provided in this embodiment. The line of action of the pressing force is inclined in this embodiment by approximately 60 ° relative to the horizontal. Cutting roller 2 and counter roller 3 are therefore always pressed here in a mechanically stable equilibrium position.
As can be seen, the flat material sheets B supplied by a transport device 5, preferably a suction belt transport device, are first taken over by the suction surface 4 of the cutting roller 2, before transporting them to the nip. It is particularly advantageous in this embodiment that the flat material blanks Z do not have to change their curvature orientation after leaving the nip. The flat material sheet B assumes the curvature orientation of the lateral surface 6 of the cutting roller 2 even before it reaches the nip, so that the cut-out flat material blanks Z can retain this already previously assumed curvature orientation since they are transported on the lateral surface 6 to the transport roller 19. The transport device 5 preferably extends into the region vertically below the center of rotation M _{S of} the cutting roller 2, so that there the flat material sheets B can be taken over by the suction air acting on lateral surface 6 tangentially.

In the embodiment shown in Fig. 3 which transports the active cutting or. Cutting tool carrying cutting roller 2, the flat sheets B to the nip. Because of the curvature orientation of the flat material sheet B that has already been produced before cutting or embossing, which can be retained after cutting or embossing of the flat material blanks Z, this embodiment is particularly advantageous. Alternatively, however, it is also conceivable here to exchange cutting roller 2 and counter roller 3, so that the counter roller 3, which then lies above the transport plane T and carries the passive cutting and embossing tools 3, transports the flat material sheets to the roller nip.

The areal distribution of Saugluftbeaufschlagung on the lateral surfaces 6 and 7 of the cutting roller 2 and counter-roller 3 is always based on the geometry of the flat material blanks Z or the geometry of the residual material. The flat sheets B are therefore not completely covered by the Saugluftwirkung during transport to the nip in the embodiments according to FIGS. 2 and 3, but in Fig. 2 only of those Saugluftöffnungen 9, which correspond to the geometry of the residual material, and in Fig. 3rd only of those suction air openings 8, which correspond to the geometry of the flat material blanks Z.

FIG. 4 shows parts of two foil sheets 20 and 21 unwound in the plane. The foil cutter 20 carrying the cutting blade 10 and the patrices 11 is arranged on the outer surface 6 of the cutting roller 2. It is provided with Saugluftdurchbrüchen 22, which are aligned in certain mounted on the lateral surface 6 with certain Saugluftöffnungen 8. The foil cutter 21 carrying the counter-cutting bar 12 and the dies 13 is arranged on the lateral surface 7 of the counter-roller 3. The suction air breakthroughs 23 provided in it are aligned in the mounted on the lateral surface 7 state with certain Saugluftöffnungen 9. Particularly advantageous thus allows the use of releasably mountable foil sheets 20, 21 to close those Saugluftöffnungen 8, 9, the suction in terms of the geometry of Flat material blanks Z or of the residual material R, I is not desired in each case.

LIST OF REFERENCE NUMBERS

1

contraption

2

cutting roller

3

backing roll

4

guide means

5

transport means

6.7

lateral surface

8.9

suction air

10

cutting blade

11

punch

12

Against cutting bar

13

die

14.15

suction air channel

16.17

Saugluftbohrung

18

transport means

19

transport roller

20.21

foil sheet

22.23

Saugluftdurchbruch

B

Flat sheet of material

I

inside recess

K

Contour of the flat material blanks Z

M _s

Center of rotation of the cutting roller. 2

M _G

Center of rotation of the counter roll 3

R

residual grid

T

transport plane

V

Vorbruchlinie

Z

Flat material blank

Claims (10)

Apparatus for cutting out a plurality of flat stock blanks (Z) which are used each from a flat material sheet (B), comprising a cutting roll (2) and a counter-roll (3) interacting therewith, which form a nip into which the respective flat material sheet (B) for cutting the flat material blanks (Z) can be inserted, with the residual material forming both a residual grid (R) and inner cutouts (I) lying in and / or between the flat material blanks (Z),
characterized in that
both the cutting roller (2) and the counter-roller (3) are each formed as a suction roll with a lateral surface (6, 7) having a plurality of Saugluftöffnungen (8, 9), wherein the Saugluftbeaufschlagung the cutting (2) and the Counter roll (3) is carried out such that immediately after cutting the flat material blanks (Z) on the lateral surface (6, 7) of the cutting (2) or counter roll (3) and the skeleton grid (R) together with the inner cutouts (I) the outer surface (7, 6) of the counter (3) or cutting roller (2) is further transportable, and wherein the cutting roller (2) additionally as embossing roll for generating embossments and / or Vorbrüchen (V) in the flat material blanks (Z) is formed and the counter roll (3) is adjusted accordingly. Device according to claim 1,
characterized in that
the cutting roller (2) and the counter-roller (3) with a pressing force against each other pressed and stored in the direction perpendicular to the line of action of the pressure bearing play and offset (.DELTA.H) are arranged to each other. Device according to one of the preceding claims,
characterized in that
the cutting roller (2) and the counter-roller (3) are arranged such that the flat material sheets (B) of the suction air openings (9) of the counter-roller (3) can be detected and on a part of whose lateral surface (7) can be fed to the nip. Device according to one of claims 1 or 2,
characterized in that
the cutting roller (2) and the counter-roller (3) are arranged such that the flat material sheets (B) of the Saugluftöffnungen (8) of the cutting roller (2) can be detected and on a part of whose lateral surface (6) can be fed to the nip. Apparatus according to claim 3 or 4,
characterized in that
a guide device (4) for guiding the flat material sheets (B) along the lateral surface of the counter (3) or the cutting roller (2) is provided. Apparatus according to claim 3 or 4,
characterized in that
a transport device (5) for feeding the flat material sheets (B) extends into a region vertically below the center of rotation (M _G , M _S ) of the counter (3) or the cutting roller (2), so that there the flat material sheets (B) the counter (3) or the cutting roller (2) can be transferred. Device according to claim 6,
characterized in that
the transport device (5) is a Saugbandtransporteinrichtung. Method for cutting out a plurality of flat sheet blanks (Z) which are useful each from a flat material sheet (B), in which the respective flat material sheet (B) for cutting out the sheet blanks (Z) into a nip between a cutting roll (2) and a counter-roll cooperating therewith ( 3) is introduced and as a residual material both a residual grid (R) and in and / or between the flat material blanks (Z) lying inner cutouts (I) arise,
characterized in that
Immediately after cutting, the flat material blanks (Z) by means of suction air on the lateral surface (6, 7) of the cutting (2) or counter roll (3) and transported on this further and the rest grid (R) together with the inner cutouts (I) by means of Suction air on the lateral surface (7, 6) of the counter (3) or cutting roller (2) are kept and transported on this, so that immediately after cutting a separation of the flat material blanks (Z) of the residual grid (R) and the inner cutouts ( I). Method according to claim 8,
characterized in that
during the cutting at the same time an embossing of the flat material blanks (Z) takes place, so that they have embossments and / or projections (V). Method according to claim 8 or 9,
characterized in that
the flat material sheets (B) are at least partially held by suction air on the lateral surface (7, 6) of the counter (3) or the cutting roller (2) before reaching the nip and thereby fed to the nip.

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