DE102006042331A1 - Cutting knife for separation of web material, has peripheral arranged cutting edge wherein each cutting edge is arranged at distance to cylinder axis and in relative position intersecting with cylinder axis at an angle - Google Patents

Abstract

Cutting knife (20) has peripheral arranged cutting edge wherein each cutting edge (25) is arranged at a distance (24) to the cylinder axis (3) and in relative position intersecting with the cylinder axis at an angle (beta ). Each of the cutting edges is arranged at varying distance to the cylinder axis.

Description

The The invention relates to a knife cylinder for separating web material according to the preamble of claim 1. The knife cylinder comprises at least one knife for cutting, for example for cross-cutting or Querperforieren, in the conveying direction moving web material. By means of the knife cylinder can preferably Paper, corrugated cardboard, plastic or metal foil, fabric material etc. are processed.

A knife cylinder of this kind is made GB 884 194 for separating web material having at least one groove for receiving a knife arranged parallel to the cylinder axis of the knife cylinder. The knife cylinder has a circumferential groove and the groove diametrically opposite to a cylinder axis enclosing cylinder core. Within the cylinder circumference with a theoretical diameter between the groove and the cylinder core extending side surfaces are arranged in the direction of the cylinder axis, which are inclined starting from the cylinder core to the groove. The knife arranged on the knife, especially its cutting edge, is arranged parallel to the cylinder axis.

the The knife arranged on the rotatable knife cylinder is parallel assigned fixed counter knife, being between two knives promoted the web material becomes. Both parallel arranged blades have a plurality tooth so that the separating cut of the web material is jagged.

Another rotatable knife cylinder is off GB 628 154 known, which has two circumferentially diametrically opposed, the cylinder core enclosing grooves for receiving a knife each. Starting from the cylinder core, the side surfaces are inclined in the direction of the grooves. The knives arranged on the rotatable knife cylinder are assigned a rotatable cylinder with circumferentially offset 180 ° and arranged parallel to the cylinder axis grooves, between the two cylinders, the web material is conveyed. The respectively arranged on the knife cylinder knife, especially the cutting edge, is arranged parallel to the cylinder axis. When both cylinders rotate, one of the knives on the knife cylinder dips into one of the grooves of the associated cylinder, so that a separating cut is realized.

Out DE 33 03 628 C2 a knife cylinder is known which has at least one groove for receiving a knife arranged substantially parallel to the cylinder axis for separating the moving web material. This knife cylinder further comprises over the length of each knife distributed arranged pressure cylinder for non-positive fixing of the respective knife relative to the knife cylinder. The one groove for receiving a knife is arranged on the cylinder circumference of the knife cylinder or a plurality of grooves for receiving the respective knife on the cylinder circumference of the knife cylinder are arranged distributed. In accordance with 2 exemplary arrangement of six grooves on the knife cylinder, these are arranged offset by 60 ° on the full circumference of the cylinder.

For higher processing speeds of Web material is such a design of a knife cylinder less suitable.

Of the Invention is based on the object, a knife cylinder of to create the aforementioned type, the cheaper mass ratios and for higher Cutting performance or processing speeds of web material suitable is.

The The object is achieved by the Training features of claim 1 solved. Developments result from the dependent claims.

One The first advantage of the measuring cylinder is due to the fact that this opposite the Known knife cylinders has a noticeable mass reduction or that with the knife cylinder according to the invention higher Cutting performance and processing speeds feasible are. The mass reduction is achieved by within the cylinder circumference of the knife cylinder with a theoretical Diameter between the special knife or knives and the cylinder axis adjacent cylinder core in the direction Cylinder axis extending and the knives with cutting out inclined side surfaces are arranged. According to the below-described, special Training the knife, the side surfaces are particularly helical or aslant arranged inclined to the cylinder axis or to the cylinder core. from that results in that the center of gravity of the knife cylinder always on the cylinder axis is and possible Unbalance can be avoided.

The mass reduction can be additionally improved by the arrangement of communicating with the side surfaces of openings (openings). Upon rotation of the knife cylinder, the openings are then flowed through by the ambient air. Alternatively, instead of the apertures each side surface recesses, for example Ausfrä ments, which are formed by a material removal of the respective side surface. The wells are closed in a training and thus can not be traversed by the ambient air. In a second embodiment, the depressions on openings (openings), which can be traversed by the ambient air.

A further mass reduction is through the use of suitable materials achievable, for example by gray cast iron or light metal casting, in particular Cast aluminum, or for example by extrusion profiles, in particular Aluminum material. Furthermore, foamed aluminum can be used. Alternatively, such a knife cylinder made of a plastic, including FKV (fiber plastic composite) or especially CFK (high-strength plastic with embedded carbon fibers). Likewise is foamed plastic used. If necessary, appropriate stiffeners are provided. For example, on a plastic material, a plate-shaped material with a high modulus of elasticity (modulus of elasticity), like a ceramic material (single or more ceramic plates) or FKV, which may be arranged the increase the stiffness serves.

One second advantage is that the knife cylinder by means of a Machine drive or preferably with a single drive, i. own motor, is drivable. In a training is the single drive circuit-wise with a machine control of the processing machine coupled.

through the single drive and due to the mass reduction can the knife cylinder, for example in the presence of a safety-relevant Event, in a very short time - starting from the present Processing speed - to To be brought to a standstill. Alternatively, the knife cylinder - starting from standstill or a relatively low processing speed - on the maximum processing speed can be accelerated. For this are the individual drive from the machine control appropriate Signals supplied. However, the knife cylinder is not on such a drive limited. Much more can such a knife cylinder with the main drive of Processing machine, preferably using a gear, be coupled.

When third advantage should be given that by means of the single drive and due to the relatively low mass ratios the web material under consideration same or different format lengths while of the processing plant can be disconnected. At the separation unequal format lengths be at a speed-promoted web material the individual drive supplied by the machine control corresponding signals. in this connection the single drive can be delayed or delayed accelerates to the conveying speed operated the web material. This can be any format lengths the subsidized Web material to be separated.

One Fourth advantage arises from the fact that through the contour and despite the mass reduction high rigidity, especially in the Effect of a force on the cutting edge of a knife in radial Zylinderachsrichtung, the knife cylinder can be achieved. It is advantageously not the formation of the knife cylinder limited to the circumferential arrangement of only one knife. at the circumferential arrangement of two knives, these are 180 °, at the Arrangement of three knives are these by 120 ° or at the Arrangement of four knives these are offset by 90 ° arranged etc.

Of the Knife cylinder can accommodate the knife with cutting edge in a groove. In a further embodiment of the knife cylinder with at least a knife with cutting edge be formed, which immediately on the knife cylinder, i. without groove for receiving it, arranged is. In this case, the knife or the knife can be releasably attached to the knife cylinder be arranged. In a further training, each cutting edge in the cylinder body be executed integrated of the knife cylinder.

the Knife cylinder or knives is assigned a counter device, the according to the design of the knife for separating the web material is adjusted.

The Invention is intended to an embodiment be explained in more detail. Here are shown schematically:

1 a knife cylinder with a groove for receiving a knife,

2 a knife cylinder with two grooves for holding one knife each,

3 the knife cylinder according to 2 in front view,

4 a development of the knife cylinder according to 2 .

5a a rotary figure of a knife cylinder with helically arranged knife,

5b a rotary figure of a knife cylinder with hyperbolic knives,

6a a knife cylinder according to 2 or 4 with inclined side surfaces,

6b a representation of the relative position of a cutting edge to the cylinder axis,

7 an illustration of two side surfaces of a knife cylinder (top view).

A web material 9 passes through in the conveying direction 10 a gap 16 in a processing machine. The web material 9 is preferably made of paper, including corrugated cardboard, metal, foil, including plastic, or tissue etc. The gap 16 is made of a rotatably arranged knife cylinder 20 and a counterpart device 15 educated. The counter device 15 may be in a training a rotatably mounted impression cylinder, which is partially of the web material 9 is entwined. In a further embodiment, the counter device 15 be a fixed surface over which the web material in the conveying direction 10 is transported. Alternatively, the counterpart device 15 comprise a fixed cutter, as shown in FIG 1 and 2 is shown. In a further embodiment, the counter device 15 a structurally identical second knife cylinder 20 with appropriate number of cutting edges 25 or knives 14 with cutting 25 be.

The knife cylinder 20 serves to separate web material 9 , where the term "cutting" includes cutting, perforating, punching, etc. For this, the knife cylinder is 20 in a rack 11 on both sides with its cylinder pin in a respective storage 12 rotatably mounted and coupled to a drive of the processing machine or a separate drive. These are the cylinder pin to a cylinder axis 3 arranged in alignment.

The knife cylinder 20 also has at least one cutting edge 25 or at least one on a knife 14 present cutting edge 25 (Cutting edge) made of a cutting material for separating the web material 9 on. The term "knife" used below always includes at least one on the knife 14 arranged cutting edge 25 one.

Each cutting edge extends 25 or every knife 14 in the direction of the cylinder axis 3 and is to this cylinder axis 3 at a distance 24 with a cylinder axis 3 arranged at an angle β crossing relative position: Preferably, at least the cutting edges 25 or the knives 14 with cutting 25 slightly helical or oblique (inclined at an angle β in the case of hyperbolic formation) 15 is in the contour of the selected arrangement of the cutting edges 25 or the knife 14 executed adapted accordingly. For example, the knife cylinder 20 one groove each 1 (respectively. 2 etc.) for receiving an arranged knife 14 with at least one cutting edge 25 exhibit.

The knife 14 can have one or more, continuous or interrupted cutting 25 exhibit. With a knife 14 with continuous cutting edge 25 is known to be the web material 9 when passing through the gap 16 cut into individual sheets across. With a knife 14 with broken edge 25 is known to be the web material 9 when passing through the gap 16 transversely perforated in format length. Through the transverse perforation of the web material 9 can then be the sheet material in sheets, for example by tearing, separated or can join the transverse perforation a folding process.

In a preferred embodiment, the cylinder axis 3 or a cylinder pin at one end with a, preferably electric single drive 13 coupled. The single drive 13 is circuitically coupled with an upstream machine control, so that the knife cylinder 20 self-propelled in a predeterminable manner to the processing machine or to the web material 9 is drivable. By means of the machine control is the single drive 13 during processing of the web material 9 so controllable that different formats can be separated.

According to 1 has in a first embodiment of the knife cylinder 20 a circumferentially arranged first groove 1 and one of the groove 1 diametrically opposite one arranged the cylinder axis 3 enclosing cylinder core 4 on. Preference is given to the cylinder core 4 - to the groove 1 diametrically opposite - a mass balance 5 arranged. The groove 1 takes a knife described above 14 with at least one cutting edge 25 on which in the groove 1 is arranged.

Alternatively, the knife 14 with at least one cutting edge 25 or the cutting edge 25 even directly on the knife cylinder 20 be arranged (without groove). For example, at least one cutting edge 25 or a knife 14 with at least one cutting edge 25 on the knife cylinder 20 be firmly adhered or detachably arranged. In a development, a wedge-shaped edge (cutting edge) of the knife cylinder 20 even as a cutting edge 25 be educated.

Within the cylinder circumference of the knife cylinder 20 with a theoretical diameter 6 are in the radial direction between the cutting edge 25 or at least one cutting edge 25 on the knife 14 and the cylinder core 4 and in the axial direction zwi front and rear side surface edge 27 . 28 extending first and second side surfaces 7 . 8th arranged. The adjacent side surfaces 7 . 8th are - starting from the cylinder core 4 - within the diameter 6 according to the design of the cutting edge 25 , especially obliquely inclined at an angle β or extend helically (with changing angle β), from the cylinder core 4 to the cutting edge 25 in each case at an angle α obliquely inclined. In the position of the knife cylinder 20 with two cutting edges 25 according to 6a the angle α is shown with respect to the vertical V present in this position. The cylinder core encloses 4 within the diameter 6 the cylinder axis 3 and goes into the preferably arranged mass balance 5 or in the cylinder contour with the described side surfaces 7 . 8th above. Depending on the inclination of the respective cutting edge 25 or the respective groove 1 . 2 or the respective knife 14 at an angle β (to the cylinder axis 3 ) run to the side walls 7 . 8th preferably in parallel.

Every cylinder core 4 regardless of the particular training always within the cylinder circumference with a diameter 6 arranged. When ambient heat occurs can compensate for the thermal expansion in the knife cylinder 20 at its mass balance 5 a thermal compensating material 23 be arranged. Alternatively, the mass balance 5 even from a thermal compensation material 23 executed. The thermal compensation material 23 is diametrically opposite the groove 1 or cutting edge 25 arranged.

According to 2 has in a second embodiment of the knife cylinder 20 two circumferentially arranged grooves 1 . 2 or knife 14 each with at least one cutting edge 25 on. The knife 14 with cutting 25 are respectively the first groove 1 is the second groove 2 diametrically opposite, the cylinder core 4 arranged enclosed, ie arranged circumferentially offset by 180 °. Every groove 1 . 2 takes ever a knife described above 14 (with at least one cutting edge 25 ), which in the respective groove 1 . 2 is arranged. The offset by 180 ° arranged cutting 25 on the knife 14 or grooves 1 . 2 are related to the cylinder axis 3 crossing at an angle β (mirror image offset) on the knife cylinder 20 arranged ( 6b ).

Also preferred is such a knife cylinder 20 designed as a module and can be replaced if necessary against another knife cylinder. In particular, in addition to the knife cylinder 20 other assemblies, such as storage 12 , as well as the Gegeneinrichtung 15 as a complete unit within the processing machine for another unit with knife cylinder, storage and counter device interchangeable.

Within the cylinder circumference of the knife cylinder 20 with a theoretical diameter 6 are in the radial direction between the two cutting edges 25 or cutting 25 on knives 14 and the cylinder core 4 and in the axial direction between front and rear side surface edges 27 . 28 extending first and second side surfaces, respectively 7 . 8th according to the special arrangement of the cutting edges 25 arranged.

The adjacent side surfaces 7 . 8th are - starting from the cylinder core 4 - to the respective cutting edge 25 arranged at an angle α inclined ( 6a ). In the position according to 6a the knife cylinder 20 with two cutting edges 25 the angle α is shown with respect to the vertical V present in this position. The cylinder core encloses 4 within the diameter 6 the cylinder axis 3 and goes into the respective cylinder contour with the described side surfaces 7 . 8th above. Depending on the inclination of the respective cutting edge 25 or the respective groove 1 . 2 or the respective knife 14 at an angle β (to the cylinder axis 3 ) run the side walls 7 . 8th in parallel.

In an education are the cylinder core 4 each subsequent side surfaces 7 . 8th helically extending with helically arranged cutting edges 25 or rectilinear in hyperbolic arranged cutting edges 25 arranged obliquely inclined. It is with helically extending side surfaces 7 . 8th the angle β of a respective front side surface edge 27 each to a rear side surface edge 28 rising or vice versa.

In a further training, which are the cylinder core 4 each subsequent side surfaces 7 . 8th in addition to the helical or obliquely inclined, hyperbolic formation arranged convexly curved inclined towards the cutting edges. Alternatively, the side surfaces 7 . 8th - starting from the cylinder core 4 - concavely curved. The concave curvature of the side surfaces 7 . 8th is for example an advantage when on the knife cylinder 20 several cutting edges 25 For example, two knives 14 with one cutting edge each 25 in one or one groove each 1 . 2 , are arranged for the double cut. In one embodiment, the adjacent side surfaces 7 . 8th same angle of inclination or same curvatures.

The side surfaces 7 . 8th may be as solid surfaces or alternatively by webs with intervening communicating breakthroughs 19 be formed.

The cylinder core 4 can, regardless of the embodiments in the vacant places in a training rectilinear faces 17 . 18 exhibit. In a further embodiment of the cylinder core 4 convex or concave curved (preferably with the same curvature) faces 17 . 18 exhibit.

In a development, the side surfaces 7 . 8th communicating breakthroughs 19 (Openings), ie they extend transversely to the cylinder axis 3 , The breakthroughs 19 can be of the same or different geometry. Upon rotation of the knife cylinder 20 become the breakthroughs 19 flows through ambient air. Depending on the direction of rotation of the knife cylinder 20 flows, for example, in the breakthroughs 19 on the side surfaces 7 the air in and on the side surfaces 8th out. The breakthroughs 19 can be designed for closing, for example by attachable caps. When training with bars are the breakthroughs 19 between the bridges.

Alternatively, instead of the breakthroughs 19 every side surface 7 . 8th Recesses, such as cutouts, beads, cassette-shaped pockets, which, for example, by a material removal of the respective side surface 7 . 8th are formed. The recesses are closed and thus can not be flowed through by the ambient air. Preferably, the depressions on the respective adjacent side surfaces 7 . 8th arranged in mirror image.

In further education of 2 shows 4 a knife cylinder 20 with increased rigidity. Thereafter, this points in the direction of the cylinder axis 3 concentric with this arranged support tube 21 , For example, made of steel, ceramic, carbon fiber material (CFRP) on. The support tube 21 takes the end of the cylinder pin or is itself as a cylinder pin in storage 12 supported on both sides. On the support tube 21 are the cylinder core 4 as well as the arranged depending on the training side surfaces 7 . 8th analogous to 2 arranged. cylinder core 4 as well as the side surfaces 7 . 8th are preferably made of a material with a lower shear modulus (G) than the support tube 21 executed.

In a further development, in addition to the support tube 21 or separately (without support tube 21 ) on the cylinder core 4 - For example, symmetrically each a ceramic plate 22 (or a plate of FKV), alternatively, several ceramic plates 22 (or several plates of FKV), be arranged. The ceramic plates 22 are adherent with the cylinder core 4 connected and increase the rigidity of the knife cylinder 20 , These plates preferably have a higher modulus of elasticity than the cylinder core 4 on. Alternatively, such plates are made of carbon fiber material.

The knife cylinder 20 is not on the arrangement of a cutting edge 25 or a knife 14 with at least one cutting edge 25 or a groove 1 or two cutting edges 25 , Knife 14 with at least one cutting edge 25 or grooves 1 . 2 limited. Rather, circumferentially more cutting 25 , Knife 14 with at least one cutting edge 25 or grooves 1 . 2 etc. can be arranged (not shown).

Thus, in a further embodiment of the knife cylinder 20 three circumferentially arranged cutting edges 25 , with or without grooves 1 . 2 , .... or knife 14 each having 120 ° (radially) offset the cylinder core 4 are arranged enclosing. Within the cylinder circumference with a theoretical diameter 6 are between the cutting edges 25 or three grooves 1 . 2 , ... or knives 14 each in the direction of the cylinder core 4 extending side surfaces 7 . 8th arranged. These adjacent side surfaces 7 . 8th are starting from the cylinder core 4 each to the three cutting edges 25 or grooves 1 . 2 , ... (others not shown) or knives 14 with cutting 25 arranged obliquely inclined.

Starting from the cylinder core 4 are in this training thus three pairs of adjacent side surfaces 7 . 8th in front.

In a further embodiment of the knife cylinder 20 four circumferentially arranged cutting edges 25 , with or without grooves 1 . 2 , .... or knife 14 each having at 90 ° (radially) offset the cylinder core 4 are arranged enclosing. Within the cylinder circumference with a theoretical diameter 6 are between the four cutting edges 25 or grooves 1 . 2 , ... or knife 14 in the direction of the cylinder core 4 extending side surfaces 7 . 8th arranged. These adjacent side surfaces 7 . 8th are starting from the cylinder core 4 in each case to the four cutting edges or grooves 1 . 2 , ... (others not shown) or knives 14 with cutting edge 25 arranged obliquely inclined. Starting from the cylinder core 4 are thus in this training thus four pairs of adjacent side surfaces 7 . 8th in front.

These exemplary embodiments are also for the arrangement of five (each offset by 72 °), six (each offset by 60 °) or a further number arranged on the circumference cutting 25 or grooves 1 . 2 , ... (others not shown) or knives 14 transferable. The knife cylinder 20 For example, has five circumferentially arranged cutting 25 or grooves 1 . 2 , ... or knife 14 on, each offset by 72 ° the cylinder core 4 are arranged enclosing. Within the cylinder circumference with a theoretical diameter 6 between the five cutting edges 25 or grooves 1 . 2 , ... or knives 14 with cutting 25 are in the direction of the cylinder core 4 extending side surfaces 7 . 8th arranged and the side surfaces 7 . 8th are starting from the cylinder core 4 each to the five To cut 25 or grooves or knives 14 inclined at an angle. Alternatively, for example, the knife cylinder 20 six circumferentially arranged cutting edges 25 or grooves 1 . 2 , .... or knife 14 on, each offset by 60 ° the cylinder core 4 are arranged enclosing. Within the cylinder circumference with a theoretical diameter 6 are between the six cutting edges 25 or grooves 1 . 2 , ... or knives 14 in the direction of the cylinder core 4 extending side surfaces 7 . 8th arranged and the side surfaces 7 . 8th are starting from the cylinder core 4 each to the six cutting edges 25 or grooves 1 . 2 , .... or knives 14 inclined at an angle.

In each of the above embodiments are always the side surfaces 7 . 8th arranged adjacent to each other and extend according to the number of cutting 25 or grooves 1 . 2 , ... or knife 14 with cutting 25 as well as their arrangement several times to these.

The side surfaces 7 . 8th are formed analogously to the above statements.

In a preferred embodiment, each cutting edge extends 25 about the format width of the web material in the direction of the cylinder axis 3 and is at a distance 24 to the cylinder axis 3 and with one the cylinder axis 3 crossing relative position (ie slightly inclined) on the circumference of the knife cylinder 20 arranged. In this case, as already described, preferably two special embodiments can be realized.

In a first training according to 5a is every cutting edge 25 , here the example of the knife 14 with cutting edge 25 shown, with crossing relative position to the cylinder axis 3 at a same distance 24 to the cylinder axis 3 arranged. This training is achieved by cutting each edge 25 helically along the circumference of the knife cylinder 20 runs. It is thus in each case a helically arranged cutting edge 25 or a corresponding knife 14 with at least one cutting edge 25 in front. According to 5a is the knife cylinder 20 with only one helical cutting edge 25 on the knife 14 shown. Alternatively, as already described several such cutting 25 on the knife cylinder 20 be arranged. For the double cut two small parallel spaced helical cutting edges 25 preferably a knife 14 on the knife cylinder 20 be arranged.

In a second training according to 5b is every cutting edge 25 , here the example of the knife 14 with cutting edge 25 shown, with crossing relative position (angle β) to the cylinder axis 3 in a changing distance 24 to the cylinder axis 3 arranged. This training is achieved by cutting each edge 25 as obliquely on the circumference of the knife cylinder 20 extending straight line is arranged, the distance to the cylinder axis 3 is designed as a hyperbola. It is thus in each case a hyperbolic arranged cutting edge 25 in front. In 5b is the knife cylinder 20 with two circumferentially arranged cutting edges 25 , for example knives 14 and 14 ' with cutting 25 . 25 ' , shown. Both are knives 14 with cutting edge 25 (full line) or 14 ' (dashed line) arranged diametrically offset by 180 ° opposite. Alternatively, as already described several such Schneidert 25 for example, knives 14 with cutting edge 25 , on the knife cylinder 20 be arranged. For the double cut, two closely parallel hyperbolic cutting edges can be used 25 preferably a knife 14 on the knife cylinder 20 be arranged.

In 6b is a cutting edge 25 on a knife 14 shown and the knife shown 14 is in a groove 1 added. In this training, the two side surfaces go 7 . 8th in a double-sided to the knife 14 extending thickening 26 about which of the stabilization of the cutting edge 25 serve.

In 7 is a plan view of the side surfaces 7 . 8th at a knife cylinder 20 arranged with two offset by 180 °, obliquely on the circumference of the knife cylinder 20 straight cutting edges 25 shown. Here it can be seen that the side surfaces 7 . 8th in the area of the cylinder core 4 or the partial area 17 from a front side surface edge 27 to a rear side surface edge 28 at an angle γ to the cylinder axis 3 run.

1

groove (first)

2

groove (second)

3

cylinder axis

4

cylinder core

5

mass balance

6

diameter (theoretically)

7

Side surface (first)

8th

Side surface (second)

9

sheeting

10

conveying direction

11

frame

12

storage

13

individual drive

14

knife

15

opposing means (Cylinder, area, Separator)

16

gap

17

Partial area (first)

18

Partial area (second)

19

breakthrough (Openings)

20

diameter cylinder

21

support tube

22

ceramic plate

23

thermal compensating material

24

distance

25

cutting edge

26

thickening

27

front Side surface edge

28

rear Side surface edge

α

angle

β

angle

γ

angle

V

Ver Tikale

Claims (20)

Knife cylinder for separating web material with at least one circumferentially arranged cutting edge, wherein the knife cylinder has a diametrically opposite the cutting edge, the cylinder axis enclosing cylinder core and are arranged within the cylinder circumference with a theoretical diameter between the cutting edge and cylinder core in the direction of the cylinder axis extending side surfaces, starting from the Cylinder core are inclined towards the cutting edge, characterized in that each cutting edge ( 25 ) at a distance ( 24 ) to the cylinder axis ( 3 ) and with a cylinder axis ( 3 ) is arranged in a (angle β) crossing relative position. Knife cylinder according to claim 1, characterized in that each of the blades ( 25 ) in a changing distance ( 24 ) to the cylinder axis ( 3 ) is arranged. Knife cylinder according to claim 1, characterized in that each of the blades ( 25 ) at an equal distance ( 24 ) to the cylinder axis ( 3 ) is arranged. Knife cylinder according to claim 1 and one of claims 2 or 3, characterized in that the knife cylinder ( 20 ) arranged on the circumference diametrically opposite, the cylinder core ( 4 ) including cutting ( 25 ) that within the cylinder circumference having a theoretical diameter ( 6 ) between the cutting edges ( 25 ) in the direction of the cylinder core ( 4 ) extending side surfaces ( 7 . 8th ) are arranged, and that the side surfaces ( 7 . 8th ) starting from the cylinder core ( 4 ) respectively to the cutting edges ( 25 ) are tilted obliquely at an angle (α). Knife cylinder according to claim 1 and one of claims 2 or 3, characterized in that the knife cylinder ( 20 ) three circumferentially arranged cutting edges ( 25 ), each offset by 120 ° the cylinder core ( 4 ) are arranged within the cylinder circumference with a theoretical diameter ( 6 ) between the three cutting edges ( 25 ) in the direction of the cylinder core ( 4 ) extending side surfaces ( 7 . 8th ) are arranged, and that the side surfaces ( 7 . 8th ) starting from the cylinder core ( 4 ) to the three cutting edges ( 25 ) are tilted obliquely at an angle (α). Knife cylinder according to claim 1 and one of claims 2 or 3, characterized in that the knife cylinder ( 20 ) four circumferentially arranged cutting edges ( 25 ), each offset by 90 ° the cylinder core ( 4 ) are arranged within the cylinder circumference with a theoretical diameter ( 6 ) between the four cutting edges ( 25 ) in the direction of the cylinder core ( 4 ) extending side surfaces ( 7 . 8th ) are arranged, and that the side surfaces ( 7 . 8th ) starting from the cylinder core ( 4 ) to the four cutting edges ( 25 ) are tilted obliquely at an angle (α). Knife cylinder according to claim 1 and one of claims 2 or 3, characterized in that the knife cylinder ( 20 ) five circumferentially arranged cutting edges ( 25 ), each offset by 72 ° the cylinder core ( 4 ) are arranged within the cylinder circumference with a theoretical diameter ( 6 ) between the five cutting edges ( 25 ) in the direction of the cylinder core ( 4 ) extending side surfaces ( 7 . 8th ) are arranged, and that the side surfaces ( 7 . 8th ) starting from the cylinder core ( 4 ) in each case to the five cutting edges ( 25 ) are tilted obliquely at an angle (α). Knife cylinder according to claim 1 and one of claims 2 or 3, characterized in that the knife cylinder ( 20 ) six circumferentially arranged cutting edges ( 25 ), each offset by 60 ° the cylinder core ( 4 ) are arranged within the cylinder circumference with a theoretical diameter ( 6 ) between the six cutting edges ( 25 ) in the direction of the cylinder core ( 4 ) extending side surfaces ( 7 . 8th ) are arranged, and that the side surfaces ( 7 . 8th ) starting from the cylinder core ( 4 ) to the six cutting edges ( 25 ) are tilted obliquely at an angle (α). Knife cylinder according to claim 1 and 2 or 3 and one of claims 4 to 8, characterized in that the cylinder core ( 4 ) closing side surfaces ( 7 . 8th ) rectilinear or convexly curved or concavely curved to the respective cutting edge ( 25 ) are inclined. Knife cylinder according to one of claims 4 to 8, characterized in that the cylinder core ( 4 ) rectilinear or convexly curved or concavely curved partial surfaces ( 17 . 18 ) having. Knife cylinder according to claim 1 or one of claims 4 to 8, characterized in that the side surfaces ( 7 . 8th ) communicating breakthroughs ( 19 ), which upon rotation of the knife cylinder ( 20 ) are flowed through by ambient air. Knife cylinder according to claim 1 or one of claims 4 to 8, characterized in that the side surfaces ( 7 . 8th ) Depressions, which communicating breakthroughs ( 19 ), which are flowed through by ambient air during rotation of the knife cylinder. Knife cylinder according to claim 1 or one of claims 4 to 8, characterized in that the side surfaces ( 7 . 8th ) Have recesses which are closed and are not flowed through by ambient air. Knife cylinder according to claim 1 or one of claims 4 to 8, characterized in that each cutting edge ( 25 ) in each one on the knife cylinder ( 20 ) groove ( 1 ) is recorded. Knife cylinder according to claim 1, characterized in that the cutting edge ( 25 ) diametrically opposite a mass balance ( 5 ) is arranged. Knife cylinder according to claim 1, characterized in that the knife cylinder ( 20 ) end with a single drive ( 13 ) is coupled. Knife cylinder according to claim 1 and 16, characterized in that the individual drive ( 13 ) is coupled in terms of circuitry with a machine control and can be driven in a predeterminable manner. Knife cylinder according to claim 1, characterized in that the cutting edge ( 25 ) diametrically opposite a thermal compensation material ( 23 ) is arranged. Knife cylinder according to claim 1 and 18, characterized in that the thermal compensation material ( 23 ) at the mass balance ( 5 ) is arranged. Knife cylinder according to claim 1 and 18, characterized in that the thermal compensation material ( 23 ) at the same time the mass balance ( 5 ).