DE10347548A1 - Cutting and punching arrangement for cutting and punching wide strips into narrow strips comprises blade shafts each receiving precisely arranged central tips - Google Patents

Abstract

Cutting and punching arrangement comprises blade shafts (1, 2) each receiving precisely arranged central tips (3, 4). Independent claims are also included for the following: (1) Blade holder; (2) Deviating roller; (3) Cutting cylinder; and (4) Cutting arrangement. Preferred Features: One shaft (2) rotates in a fixed defined position between the centering tips. The position of one or both shafts is positioned axially over a defined adjusting region.

Description

The The invention relates to a cutting and stamping plant according to the preamble of claim 1.

Web-shaped materials Depending on the material properties, cutting widths and required cutting quality with different Cutting process cut into more or less narrow bands.

The known mechanical cutting methods are distinguished as follows:

silhouette

The Material web is made by interlocking circular top and Undercutter, whose blades touch like scissors, shearing severed.

The axially spring-loaded upper blades are first with their cutting edge in a narrow groove of the lower blade dipped. Then be the upper knife axially offset until the cutting edge with lighter Spring force presses against the cutting edge of the lower blade.

you differentiates between individually mounted upper blades and upper blades, which are lined up next to each other on a wave. Individually stored Upper knife can immerse with a certain angle of attack to the web direction in the lower blade, so that upper and Only touch the bottom knife with its cutting edges at one point. The episode is an optimal cutting result and improved blade life. Due to the structural dimensions of the single knife holder starts the smallest cutting width at approx. 15mm. Disadvantages are the relative high costs for the single knife holder.

are the upper knife as well as the lower knife on a wave next to each other strung, can very narrow cutting widths from about 1 mm are generated. The upper knife However, they have no angle of attack to the web direction. Thus touch each other the cutting edges of the upper and lower blades each at two points. This in turn leads to a worse cutting result and a stronger wear the knife. Especially with adhesive materials, it often happens to pollution problems. As the number of knives increases the vote between the upper and lower blade shaft due of adding thickness tolerance errors considerably more difficult. After all allowed to the upper blades when immersed in the lower blade shaft at no Spot "tick".

For the assembly with Knives are the lower and upper cutter shafts complete incl Shaft bearings installed and removed, reducing set-up times for one Format change at the cutting unit are correspondingly high. The complicated one Installing and removing the shafts can easily lead to damage to the bearings. Runout the waves and thus negative effects on the cutting behavior are the consequence.

crush

Circular, individually supported by blade holder, with a resilient force Impacted blades rotate on a hardened steel cylinder and separate with a "rounded Cut the "squeezing Web.

The Knife holders are mounted on a fixed truss.

Of the Crushing is considered a robust cutting system with a high field of application. Its disadvantages are the relatively poor cut quality and low cutting speeds. The minimum cutting width is depending on the size of the knife holder approx. 6mm.

razor slitting

sharp Blades dive rigidly into a narrow groove of a rotating steel shaft and slit the web.

The Blade holders are mounted on a fixed truss.

With The razor blade cut to achieve a very good quality cut at low Cost (blades are mass-produced).

adversely is the required axial alignment between blades and shaft grooves. Especially with adhesive materials, it is easy to get dirty. Furthermore, the service life of the blades are relatively low and the Field of application limited usually very thin Materials. The minimum cutting width is depending on the size of the blade holder about 5mm.

punch

One out of one piece manufactured punching cylinder rolls over support rings whose diameter slight are bigger as the diameter of its cutting, on a hardened counter punch cylinder made of steel.

About two Pressure roller pairs become the support rings pressed on the counter punch cylinder. Thus, the punching cylinder on the support rings between three rotating elements (counter punch cylinder and two Pressure rollers) centered. additional, in a guided tour the bearing sliding bearings prevent axial displacement of the punching cylinder and fix it during assembly.

The Cutting the punching cylinder have a precisely defined distance to the counter punch cylinder, so that the material web up to a certain depth is scratched. The high cutting quality of 2.5mm wide punched lines distinguishes this system.

The Function, however, requires the highest Precision. This technique is correspondingly cost-intensive. Structurally conditioned are the speeds and thus the cutting speeds very much limited. Another disadvantage is that for each Format a separate punching cylinder is required.

This System is only for punching and not for cutting the web uses.

For the described Cutting and punching systems will, with a few exceptions, and there where the top and bottom knives are positioned with single knife holders be (big Working widths), at least one knife or cutting shaft or a cutting or punching cylinder needed. As the remodeling or the adapt the shaft / shafts / cylinders because of the fixed bearings Too expensive, are usually individual for the different systems Cutting or stamping required.

is enough Space is present, e.g. in slitter-cutting machines, around one preferably huge To ensure application area of the machines, often two different Cutting systems (mostly scissoring and squeezing) installed in parallel.

task The invention is a cutting and punching of the type mentioned so that it is possible is the different cutting and punching methods, in particular but also new techniques, without complex conversion measures to be used in only one cutting unit. The installation and removal of the Knife shafts or punching cylinders should be considerably relieved, with the highest possible precision of Permanent storage guaranteed remains.

These The object is solved by the characterizing features of claims 1-77.

The Invention will now be described with reference to embodiments in the drawings explained in more detail. It shows:

1 a longitudinal section through the cutting and punching with upper and lower blade shaft for a shear cutting system;

2 a section through the cutting and punching unit transverse to the longitudinal direction with upper and lower blades for a Scherenschnittsystem;

3 a longitudinal section through a pulley with centerings;

4 a longitudinal section through the cutting and punching with a built-in between two tips traverse and blade holders located thereon;

5 a section through the cutting and punching unit transversely to the longitudinal direction with a built-in between two tips traverse, without knife holder;

6 a partial view of the cutting and punching with a built-in between two tips Traverse, without knife holder;

7 a section through the cutting and punching unit transverse to the longitudinal direction with two, built between two tips trusses, the upper cross member is equipped with pneumatically operated knife holders and the lower with rigid cutting roll holders;

8th a section through the lower centering tip bearing the drive side with a rotary feedthrough and shaft seal;

9 a Quetschmesserschneidanordnung with knife shaft and cutting cylinder;

10 a detailed view of the cutting cylinder;

11 a detailed view of the Quetschmesseranordnung in contact with the Schnedzylinder;

12 a longitudinal section through the cutting and punching with a "rigid" cross member, the longitudinal guides are anchored in the carriage of the side walls;

13 a section through the cutting and punching unit transversely to the longitudinal direction with a rigid "Traverse whose longitudinal guides are anchored in the carriage of the side walls;

14 a section through the cutting and punching unit transversely to the longitudinal direction with a, built-in between two tips traverse, centering on the two pressure rollers a knife shaft in working position on a cutting cylinder;

15 a longitudinal section through the pressure rollers and cutter shaft or traverse of 14 ;

16 a section through the cutting and punching unit transversely to the longitudinal direction with a crosshead installed between two tips, with pressure rollers and blade shaft in the assembled position;

17 a longitudinal section through the cutting and punching unit with an arrangement for punching, consisting of punching and counter-punching cylinder including the required support and pressure roller pairs with pressure screws;

18 a section through the cutting and punching unit transverse to the longitudinal direction of 17 including cleaning felt roll;

19 a longitudinal section through the cleaning felt roll with holder;

20 the clamped position of a toggle attachment for a knife holder;

21 the released position of the toggle attachment;

22 the insertion or removal position of the toggle attachment;

23 a knife holder, which is positionable by means of threaded spindle vertically in both directions;

24 a side view of the knife holder 23 with paper cut knife;

25 a plan view of several knife holder 23 with scissors cutters employed obliquely to the web direction;

26 a knife holder, the depth adjustment is done manually without spindle, wherein the adjustment depth is set by a threaded spindle or readjustable;

27 a side view of the knife holder 26 with crimping or punching knives;

28 a plan view of the knife holder 26 ;

29 a knife holder, the vertical stroke is pneumatically or manually adjustable, wherein the adjustment depth is predetermined by a threaded spindle or readjustable;

30 a side view of the knife holder 29 with crimping or punching knives;

31 a knife holder whose vertical stroke is pneumatically or manually adjustable, wherein the adjustment depth is predetermined by a threaded spindle or also readjustable, in addition, the blade bearing can be axially offset pneumatically;

32 a side view of the knife holder 31 with pneumatically displaceable paper cut knife;

33 a partial view of the knife holder 31 , Wherein the actuation is effected exclusively pneumatically or by spring force and the setting depth is predetermined by means of a threaded spindle or can also be readjusted;

34 a rigid cutter roll holder;

35 a side view of the cutting roller holder ( 34 ) with two toggle levers;

36 a cutting blade holder with resting on an axis of spring pivotally mounted blade or blades in the cutting position, wherein the suspension from the pivot point of the blade viewed from the blade delivery is located;

37 the cutting blade holder ( 36 ) in installation or removal position;

38 a cutting blade holder with clipped on an axis, resiliently mounted blade or blades in an installation or removal position, the suspension is considered from the point of the blade Schenkpunkt from the side of the blade delivery;

39 a side view of 38 on the arrangement of the comb-shaped webs or slots for guiding the blades, wherein in each case a certain number of the guide webs terminate at a lower or above the blades transversely extending slot;

40 a cutting blade holder with mounted on an axis resiliently pivotally mounted blade or blades, wherein the suspension from the Schenk point of the blade viewed from, is on the side of the blade delivery;

41 a side view of 40 on the arrangement of the comb-shaped webs or slots for guiding the blades, wherein all Führungsste ge on a lower or above the blades transverse slot end;

42 a cutting blade holder with mounted on an axis, resiliently pivotally mounted blade or blades, wherein the suspension from the Schenkpunkt the blade viewed from the blade delivery is located;

43 a side view of 42 on the arrangement of the comb-shaped slots for guiding the blades;

44 a cutting blade holder with a linear deliverable blade, which with one or more projections on a suspension whose force counter to the feed direction, supported;

45 a cutting blade holder with linear deliverable blade, which is supported on a suspension whose abutment is inserted through the blade and whose force counteracts the feed direction, supported;

46 a cutting blade holder with resting on an axis of spring pivotally mounted blade or blades in cutting position, with the suspension from the pivot point of the blade viewed from the blade delivery is. The delivery of the blades is carried out by means of adjusting screws indirectly via flat slides, which guide as an extension or as a link the pressure of the screws on the top of the blades;

47 a detailed view of 46 ;

48 a section through the detail view of 47 ;

49 a pivotally mounted in three positions blade holder on a holder, the depth adjustment is done manually by pushing against a resilient force;

50 a side view of 49 ;

51 a partial view of 49 on the mutually offset screws;

52 a partial view of 49 to the arrangement of a guide slot for the support of only one blade;

53 an extended arrangement of 49 , wherein two preferably mirror-inverted brackets, connected via spacers fix a wide blade holder vertically positionable;

54 a blade holder whose lower part is mounted transversely to the cutting direction with adjustable stop and lockable;

55 a side view of 54 wherein two holders are arranged next to each other without interrupting the predetermined cutting grid;

56 a partial section through a knife shaft in conjunction with axially displaceable pressure rings on a cylindrical pressure roller;

57 a partial section through a knife shaft in conjunction with a grooved pressure roller;

58 a view of the drive-side hole pattern of the end face of a knife shaft;

59 a blade with protruding pivoting nose;

60 - 63 Examples of different centering possibilities of the shafts;

64 an arrangement of the cutting edges for each other combined crimping or punching knife, in an enlarged view.

The cutting unit is first used in conjunction with a shear cutting system when using upper ( 1 ) and lower knife shafts ( 2 ).

As in 1 shown, the knife shafts are each between two precisely stored preferably tapered centering ( 3 ; 4 ) rotatably axially tensioned. In the lower knife shaft, the centering points are in a fixed position.

The centering points of the upper knife shaft are each on a pivoting arm, but preferably a slide ( 5 ), which via a threaded spindle ( 6 ), whose abutment is in the bridge ( 149 respectively. 150 ) is positionable for the adjustment of the distance to the lower blade shaft. The carriages should be acted upon by a resilient force (F1) against the direction of feed, which has the required force to prevent the backlash between the threaded spindle and the nut (FIG. 7 ) with built-in blade shaft ( 1 ) or traverse ( 38 ; 41 ) clearly exceeds.

One or both centering tips of the drive side are mounted slightly axially displaceable and also acted upon by a resilient force (F2), which is at least sufficient, the thread backlash between threaded spindle ( 8th ) and mother ( 9 ) to overcome the opposite centering. The axial stroke is controlled in both directions by stops ( 10 ) limited.

For installation, a shaft is held between the centering points. The centering tip ( 3 ) of the operating side, which is also mounted axially displaceable, presses by means of a threaded spindle ( 8th ) against the center hole ( 11 ) of the shaft until both centers are free of play. Since at least the mounted on a slide centering tip ( 4 ) of the drive side is axially movable, the clamped shaft can now be axially displaced according to the available stroke. Via a scale ring ( 13 ) on the handwheel ( 146 ) of the threaded spindle, the position of the upper cutter shaft can be adjusted and read accurately and above all reproducibly. Subsequently, the threaded spindle against unwanted loosening with a suitable clamping aid ( 14 ) arrested.

There the shafts ground by means of their front-side centering holes Be, storage is over These centerings are absolutely precise.

For the removal of the shaft, the lock ( 14 ) of the spindle and retracted the centering tip by means of the threaded spindle until the distance between the tips is sufficiently large to remove the blade shaft can.

Since the shafts are not to be acted upon with physical force in larger cutting units, they are at their ends for attachment to a mounting device with recesses ( 15 ) and tapped holes ( 16 ) or other appropriate measures.

The vertical position of the carriages can be roughly indicated by scales ( 17 ) on the side walls ( 144 ; 145 ) of the cutting unit. The respective exact position is on the adjustable scale rings ( 12 ) of the spindles readable. Once the right setting has been found, adjustable depth stops facilitate, for example, the eccentric rings to be adjusted rotatably ( 18 ) or the like, the reproduction of the settings and prevent at the same time an unwanted excessive immersion of the upper blade ( 19 ) in the lower blade (grooving knife 20 ).

There the slides individually and independently are adjustable, the threaded spindles should be clamped Wave as far as possible in sync actuated become. Resulting distance fluctuations between the centering points, conditioned by possible different positions of the slide, but are about the Spring-loaded centering of the drive side balanced. So is it is possible do not necessarily align the shaft axes parallel to each other.

The centering tips of the drive side have to transmit the torque a driver connection such as, key, pin ( 21 ), Toothing or the like, to the waves, which is at the latest engaged, as soon as the centerings sit backlash.

55 shows a favorable frontal arrangement of a hole pattern. The pencil ( 21 ) centered during installation of the blade shaft automatically in one of the holes ( 177 ).

If necessary, the waves could over the centering tips of the drive side as 8th shows, by means of rotary feedthrough ( 35 ) on the drive shaft and with a corresponding seal ( 36 ) between the tip and center hole and media such as compressed air or coolant are supplied. Corresponding valves ( 37 ) keep the pressure or prevent leakage of liquid media when removing the waves.

As 60 - 62 show, the centering tips may have different shapes. The reverse arrangement is also possible, so that the centering points are located at the shaft ends ( 63 ).

The different variants ( 190 - 193 ) for the storage or handling of the centering tips ( 3 ; 4 ) can also be arranged in a different constellation in the cutting unit if required ( 17 ). The dimensions required for installation in the side walls ( 144 ; 145 ) of the cutting unit apply equally to all items.

The Waves can over the Drive side can be driven by various measures.

The drive concept has to be flexible. Depending on the cutting technique used and the material to be cut, the requirements for the drive can be very different. For many materials only the web tension is sufficient to operate the cutting unit. The shaft journal ( 22 ) of the drive tips allow different drive variants, so that the lower and upper cutter shafts can be driven individually independently of each other, but also dependent on each other. The latter could also be via spur gears ( 101 ; 102 )) directly on the knife shafts.

The upper blades strip with their cutting a cleaning felt roll ( 23 ), which, depending on contamination or wear, also during operation via a handwheel ( 24 ) can be twisted and locked in the new position. The immersion depth of the upper knife into the felt roll can be achieved via separate guides ( 25 ), which are together with the centering tips on the carriage, vary. Also, the felt roll is between two tips ( 26 ; 27 ) centered, wherein the centering point ( 26 ) on the operating side at the same time by means of feather key ( 28 ) or pen serves as a torque support for the roller to prevent co-rotation of the roller caused by the rotating knives. By means of threaded spindle ( 29 ), the centering tip of the operating side can be retracted and extended. The felt roll can thus be used or removed quickly.

There The cutting mechanism is built largely symmetrical, it can for both Web running directions are used. Basically, it is also depending on Trajectory usable in different positions.

Conveniently, the frame has a cassette design, which as shown by means of rollers ( 30 ) on appropriate guides ( 31 ) can be easily installed and removed. The shaft pins of the drive tips are preferably with self-centering coupling elements ( 32 ), so that simultaneously with the insertion of the cassette, a frictional connection to the drive is made. At the same time, suitable measures such as the pens ( 33 ) the stability of the cutting unit in the machine. The lock ( 34 ) secures the cutting unit for transport on a pallet truck.

to assembly the knife shafts should be larger in size Cutting a workplace with appropriate mounting device for the safe Installation and removal of the knife shafts be set up.

In principle, the described arrangement could also be firmly integrated between the side walls of a cutting machine, provided that it allows the handling of the knife shafts. The struts ( 147 ; 148 ) of the cassette could be omitted for this variant, provided that the machine walls are designed accordingly stable or separately braced.

For the combination of individually mounted upper blades on a lower blade shaft, a traverse ( 38 ), on which the upper knife holder ( 39 ) are positioned and fastened.

The Traverse ( 4 - 7 ) is installed in place of the upper knife shaft between the centering points. Double-sided torque arms ( 40 ) prevent pivoting about the pivot point ( 132 ) of the centering tips. Like the upper knife shaft, the crosshead can be delivered vertically via the slides and offset axially by means of the centering tips. For their connection to the torque arms is axially displaceable and vertically pivotable, so that here is a length compensation due to resulting distance variations between the centering, is guaranteed by different positions of the carriage. In exceptional cases, it may be advantageous to use a "stiff" traverse ( 41 ) so that they are only movable together.

The Traverse ( 12 u. 13 ) can with guided tours ( 42 ), whereby it is axially movable between the carriage over a certain distance. The axial delivery of the traverse via a threaded spindle ( 43 ) with handwheel ( 44 ) whose abutments ( 45 ) is in the carriage of the operator side. Via a scale ring ( 46 ) on the handwheel of the threaded spindle, the axial position of the traverse can be adjusted and read accurately and above all reproducible. The delivery of the traverse takes place against a resilient force (F3) to compensate for the thread backlash.

The Axial adjustment of the traverse can help with automation a positioning drive or with appropriately adjustable stops also done pneumatically.

The Sledges can also simultaneously e.g. over a Be positioned eccentric shaft. The advantage would be a central adjustment. The construction is complicated. For the installation of an eccentric shaft would be additional Space needed and the travel path of the slides can be, with the exception of electronic Sensor, not linearly determined. Furthermore could over a Connecting shaft, each with a bevel gear for actuating the Threaded spindles the adjustment of the carriage centrally. But here is elevated Effort required and there is additional space required for the construction. These measures mean additional Cross connections in the cutting unit, which more or less the unhindered Hamper access to the actual cutting system.

alternative can the slides especially with larger working widths with electromotive positioning drives simultaneously or independently actuated become. It is also possible the carriages are pneumatically adjusted at previously set depth stops or hydraulically position.

Since with the axial displacement of the traverse all individually mounted upper blade are delivered simultaneously, the function of the axial blade adjustment for the paper cut on the individual blade holders is unnecessary. Needed but the axially sprung storage ( 48 ) to be able to dose as finely as possible to the lateral contact forces of the paper cutters.

The Traverse can meet different mounting requirements Knife holder designed accordingly become.

A novel and very advantageous mounting option for a holder show 20 - 22 ,

Of the Toggle mechanism allows easy installation and removal of the holder without tools.

The above round contour ( 49 ) and preferably made of plastic and by means of bore ( 69 ) flexibly designed toggle levers ( 50 ) of the holder are initially loose pivoting in the corresponding abutments ( 51 ) the leadership ( 76 ) 21 , By pivoting the holder in the direction ( 53 ) Guide will be the protruding contour ( 49 ) and the round contour ( 52 ) of the bell crank over a neutral point into the abutment of the guide.

The holder is firmly seated without play ( 20 ) and is in Einschwenkrichtung ( 53 ) resilient. In addition, by means of screw ( 54 ) the connection between the guide, which is firmly connected to the crossbar, and the upper part are secured. By tilting in the opposite direction ( 55 ), the holder can be released again. By limiting the toggle lever angle ( 56 ), the holder remains in the dissolved or tilted forward position between the abutment points of the guide easily fixed ( 21 ). In order to remove the holder, it pivots when overcoming a slight resistance in Ausschwenkrichtung ( 57 ) further forward ( 22 ).

In the upper part of the holder is a preferably dovetailed ( 58 ) guided slide ( 59 ), for the storage of circular or punching blades or for fastening blades.

By means of threaded spindle ( 60 ), Knurled screw ( 65 ) and scale ring ( 67 ) is the slider, or the immersion depth of the blades or blades is exactly adjustable ( 23 ). The spring force (F4) prevents backlash between spindle and nut when changing direction.

For certain applications, it is advantageous if the slider can be positioned by hand or by a defined weight force without a threaded spindle ( 49 ). For safety reasons, the stroke of the slider by a stop, pin or the like ( 61 ) to prevent accidental sliding out of the slider from the top ( 62 ) to prevent.

Particularly advantageous is the means of threaded spindle ( 63 ) adjustable depth stop ( 64 ), which via the thumbscrew ( 65 ) is pulled against a resilient force (F5) ( 26 ). The scale ring ( 67 ) can be turned to "zero" in any desired position and enables exact and reproducible positioning.

To set the knife position, the carriages of the cutting unit with the traverse and the attached knife holders are pressed against previously set depth stops via a defined force, while all the knives are in a position which still enables a feed path of the cutters in the direction of the cutting cylinder. Then the locks ( 68 ) the slider is released and the slider is moved manually over the extension ( 70 ) against a resilient force (F6), which is sufficient to move the slide including attachments automatically upwards, as far moved down until the blades or blades touch with their cutting the cylinder jacket. All slides are now locked again and the cutting unit is ready for use.

29 also shows a knife holder, which can be operated either with compressed air or manually. The compressed air passes through the connection ( 151 ) into the chamber ( 152 ). The build-up pressure causes a vertical movement of the piston ( 153 ) with slider ( 154 ) against the resilient force (F13), which is sufficient to move the piston in a depressurized state with slider with attachments automatically upwards. The stroke of the piston is by means of depth stop ( 155 ), via the threaded spindle ( 156 ) with knurled screw ( 65 ) and scale ring ( 67 ) exactly definable. The lock ( 68 ) allows, if necessary, fixing the slider in any position. Without compressed air, the holder can be used as in the previously described version ( 26 ) by hand manually over the extension ( 157 ), which by means of seal ( 162 ) to the housing ( 163 ) is actuated.

For applications where an axial adjustment of the knife holder, for example via the traverse ( 38 ) is not possible, in particular for the paper cutting, knife holder with integrated axial adjustment is needed.

31 and 32 show a knife holder in which compared to the knife holder ( 29 ) about the extension ( 161 ), the piston ( 153 ) and the slider ( 154 ) Compressed air in a preferably annular chamber ( 164 ). The pressure force causes an axial movement of the piston ( 165 ) against the spring-loaded force (F14), which is sufficient to retract the piston in the pressureless state to the starting position. The maximum piston stroke is determined by the stops ( 166 ) and can by means of the adjusting screw ( 167 ) be further reduced as needed. At the circumference of the piston ( 165 ), for example, a storage ( 168 ) or recording ( 169 ) for a paper cutting knife ( 189 ) can be arranged. For the papercut The storage, or the entire lower part of the knife holder can be made obliquely to the web direction (see as an example 25 ).

33 alternatively shows a fixed compressed air connection ( 170 ) for the pneumatic axial adjustment. The extension ( 171 ) is designed accordingly shorter.

The position of all the knives in use can also be achieved by lifting or lowering or by axial adjustment of the traverse ( 38 ; 41 ) are reproducibly changed.

The screw holes ( 71 ) in the upper part make it possible to connect several holders, with or without spacers ( 72 ), to a package. The upper parts can fit exactly at the pin holes ( 73 ). At the front of the upper part is a blind hole ( 74 ).

To release the toggle joint between the holder and guide can with an extension lever, which is inserted into the blind hole, the locking of the holder by forward pivot, or upwards, be relieved. On the reverse side, one or more threaded blind holes ( 75 ) screwing the holder with the guide ( 76 ).

In the protective cover ( 178 ) the circular and punching knife is located, easily accessible for refilling lubricants, a holder ( 66 ) for a cleaning felt ( 179 ).

The construction described allows a very flat design. Special advantages result from this for the paper cutting, since the knives can now dip individually into the lower blade even at narrower cutting widths at a certain angle to the web direction. For this purpose, the slides of the holders are provided with a blade bearing aligned correspondingly obliquely to the web direction ( 25 ). Of course, the described holder can also be used for fastening and positioning other tools and equipment, such as sensors or units for web monitoring, etc.

The also described knife holder can according to given installation specifications with other fasteners be equipped.

For the squish cut a hardened steel cutting cylinder is clamped between the tips of the lower bearing position and between the tips of the upper bearing position, a crossbar for mounting the Quetschmesserhalter instead of the lower blade shaft. Since usually the juxtaposed Quetschmesserhalter be centrally operated with compressed air, the crossbar preferably also serves as an air distributor with the corresponding connections for the individual knife holder. Also the aspiration ( 147 ) of the cutting unit can be used as a compressed air distributor ( 7 ) with corresponding connections ( 160 ).

For the razor blade cut are manifold Blades and blade holders available. The blades are coming through the web through into narrow annular grooves of a rotating Steel shaft. The prerequisites for such an arrangement are given in the above-described cutting work in particular, because the traverse for the attachment of the blade holder in height and is axially adjustable.

at some applications, e.g. at larger cutting widths and especially at very thin All you need is materials it, the blades just slightly inclined by the streamlined track to dive without the web running at this point on a grooved steel shaft. Of the Section is not clearly defined. Alone fluctuations the material tension can already the cut quality influence negatively.

A novel arrangement for a razor blade cut shows 36 u. 49 ,

The blade ( 77 ) is positioned so that its tip ( 78 ) exactly the lateral surface ( 79 ) one preferably with plastic ( 106 ) coated cutting cylinder ( 103 ) touched. The precise centering of the cylinder ensures the highest possible concentricity, so that the fixed blade does not scratch the cylinder or scratches it to a minimum. The material web is hardly displaced by the slender blade tip when separating. The result is the highest possible cutting speeds and optimum cutting quality with relatively long blade life. The service life can be increased by surface treatment. But it is very dependent on the material to be cut.

When using individual blades, it is sufficient, for example, on the slide of the previously described knife holder ( 23 u. 24 ) provide a corresponding attachment for a blade, since the holder already has an exact delivery option of the slider and thus the individual blade can be positioned. The minimum cutting width is determined by the width of the knife holder.

However, it is advantageous to use special blade holders ( 80 ), which allow especially for small cutting widths to precisely adjust the cutting depth of each blade.

The blades ( 88 ) are in a hole on one axis ( 81 ) are arranged horizontally pivotable and lie as close as possible behind the blade tip on a transverse strut ( 82 ). This connects the side panels of the holder ( 40 ) on its underside and is at its upper side with an elastic material ( 83 ) Mistake. The permanently elastic buffer ( 83 ) serves on the one hand as a support for the blades (the contour of the blades in this area is without a cutting edge) and on the other hand as an upwardly acting spring (F7) for all blades alike. The elastic buffer ( 84 ) or the suspension (F8) can also with the same effect as 42 shows from the top on the rear end ( 85 ) exert pressure on the blade. Particularly advantageous is the execution 36 respectively. 37 , The blades ( 77 ) are pivotable on the axis ( 81 ) and can be replaced independently of wear or failure. The setting of other or adjacent blades is not affected. In 38 are the blades ( 90 ) on the axis ( 81 ) clipped ( 87 ). Again, the blades can be changed individually.

Show more variants 44 u. 45 , Here, the individual blades are linear by means of adjusting screw ( 86 ) positionable.

The blades ( 93 ) will be in 44 preferably symmetrically by means of elastic buffers ( 91 ), eg round cords, which are laid over the entire width of the holder, against the set screws ( 86 ) (F9). When a set screw is loosened, the corresponding blade retracts.

In 45 are the blades ( 94 ) only with a buffer ( 92 ) against the set screws ( 86 ) (F10). The buffer is located on a continuous rod ( 95 ), which serves as an abutment. For assembly, all blades are first pushed into the holder. Then the rod with the buffer is inserted transversely through the holder and all blades. Now the blades can be delivered linearly with the help of the set screws against the buffer.

Depending on the cutting width, the blades are by vertical, comb-shaped webs ( 96 ) of the holder are separated from each other. The design of the webs or slots ( 172 - 174 ) please refer ( 39 ; 41 ; 43 u. 52 ) may vary according to the cutting width, blade thickness, number of blades and external shape of the blade holder. The web width plus the blade thickness gives the cutting width. In the middle of each blade there are small screws ( 86 ), by which the immersion depth of the blades is determined in the web. For very narrow cutting widths the screws are offset from each other for reasons of space ( 97 ) 51 ,

It is possible, e.g. in composite materials, by different depth adjustment the blades cut the web at the same time and at another To dig up to a defined depth to possibly a certain layer over to separate out a certain width. Since when loosening the screws the Blades are pushed upwards by means of the elastic buffer, can optionally also other cutting widths depending on the given grid be generated. If e.g. every second screw released, doubled the cutting width.

The blades can also be strung together directly without the comb-shaped webs side by side in a holder. The smallest cutting width then corresponds to the blade thickness. The delivery takes place, in particular with narrow blades, indirectly via small staggered flat slides ( 98 ) whose wall thickness is slightly smaller than that of the blades. The slides serve as an extension of the set screws ( 86 ) to apply pressure to the top of a single blade without affecting the position of the adjacent blades ( 46 - 48 ).

About a joint ( 99 ) is the holder ( 100 ) transverse to the web direction at the top ( 189 ) pivotally mounted, so that the angle of attack of the blade tips to the material web is variable ( 54 ). It is advantageous if the pivot angle of the holder by means of adjustable stop ( 187 ) is repeatably adjustable.

The holder is a format part and is made according to the required number of benefits, especially for narrow cutting widths in one piece. For larger cutting widths, several holders ( 55 ) are used side by side. To avoid unnecessary waste, half the cutting width should be greater than the distance between the first and last blade of the holder and its outer boundary, in order to produce at the joints of the holder, the cutting grid and the required cutting width can.

The external design the blade holder can according to the different input or Cultivation requirements are designed differently and will therefore not closer described.

To adjust the blades, the carriages of the cutting unit with the traverse and the attached knife holders are pressed against previously set depth stops by a defined force, while all blades are in a position which still allows a delivery path of the blade tips towards the cutting cylinder. Then each blade is delivered until it cuts or scratches the material properly. By Lifting the crossbar, all blades can be moved upwards at the same time and axially offset if necessary. Pressing the slides back against the set depth stops, the blades cut the web as before.

The described blade holder can also be used in a straight line course. It is it is advantageous if the web in the cutting area from below by means of defined support supported becomes.

An advantageous embodiment of the cutting cylinder ( 103 ) shows 9 , In this case, preferably a steel core ( 104 ), (with larger diameters for weight reduction also as a hollow construction), with a permanently elastic material ( 105 ) coated. The surface of the coating is ground cylindrically. About this coating is a plastic sleeve ( 106 ) shrank. Subsequently, the finishing takes place between two tips.

Of the Construction granted a secure hold of the plastic casing in a variety of Operating conditions, since the elastic layer any bumps and inaccuracies in the bore of the plastic sleeve, in particular for larger working widths, balances. In case of damage or wear the surface Can the cylinder without big Effort between two tips several times up to a certain minimum layer thickness of the plastic be reworked. If the minimum layer thickness of the plastic sleeve is undershot, the remaining part of the plastic is turned off so that the core can be reused with the elastic coating.

In conjunction with the cutting cylinder described above, films, particularly adhesive materials and many others, can be cut and stamped with a novel squeeze-cut arrangement. In contrast to the previous squeeze, sharply ground circular knives ( 107 ), whose cutting edge has an acute angle, in a defined position to the cutting cylinder ( 103 ) 9 used.

If two different diameters combined 11 , it is possible, for example, with double-adhesive materials, to separate a wide web into narrow bands and at the same time punch out the adhesive edges. So that after removal of the adhesive edges adhesive tapes are produced with one- or two-sided grips for the release film (OS 101 60 323.1).

The circular knives ( 107 ) are placed on a knife shaft ( 108 ) as required with or without spacers ( 109 ) and axially over a pressure sleeve ( 110 ) curious; excited. Hydraulic clamping nuts ( 111 ). These are lightly tightened by hand. Subsequently, the axial clamping of the blade package takes place transversely to the axis without much effort with a handy tool wrench.

After installation of the knife shaft in the cutting unit this is brought to a defined position to the cutting cylinder. It is useful, the found adjustment of the shaft with adjustable stops ( 18 ). The axial distance between the blade shaft and the cutting cylinder is thus easily reproducible.

The knife ( 107 ), as in paper cutting, by means of cleaning felt ( 23 ) permanently cleaned or lubricated.

For the impeccable Function of the cutting system are high demands on the accuracy all rotating components required. The system draws but by highest flexibility out. Since only one shaft has to be equipped with knives, there is a format change (retooling on other cutting widths) in a very short time possible. The vote between Upper and lower knives omitted. Cutting width tolerances are reduced to a minimum, with the minimum cutting width only by the material thickness of Knife (about 0.5mm) is limited. Dirt (cutting dust, adhesive accumulations etc.), which often lead to functor disorders when paper cutting, omitted largely because with this arrangement the knives with their slender ones Do not cut through the material into the lower knife and therefore the material is not unnecessary repressed becomes.

The cutting quality is similar to the paper cut.

A favorable cutting geometry shows 64 , Depending on the material to be cut but can also be different forms of advantage.

For larger working widths, the diameter of the knives ( 107 ) to a corresponding flexural rigidity of the knife shaft ( 108 ) constructively. In addition, the shaft can be stabilized against bending as required when punching on races on the associated pairs of support rollers. However, for mechanical reasons, the cutting speed must be significantly reduced.

The circular knives ( 107 ) can also be made using the traverse ( 38 ; 41 ) are positioned individually or even several by means of knife holders. The holders allow an exact adjustment of the cutting depth (punching, cutting or com combined) and can be easily arranged transversely to the web direction individually.

For very large working widths with relatively few benefits, it is advantageous to replace the cutting cylinder ( 103 ) or the lower blade shaft ( 2 ) between the centering tips a second traverse ( 38 ) at the cutting points, for example, short, plastic-coated cutting rollers ( 112 ) with the help of appropriate holders ( 113 ).

An additional design variant show the 14 - 16 ,

Two rotating, with a permanently elastic outer surface ( 114 ) provided pressure rollers ( 115 ) center the knife shaft ( 118 ) over the entire working width at the circumference ( 116 ) the knife ( 119 ). The knives are supported with their cutting edges on the lateral surface ( 79 ) of the cutting cylinder ( 103 ) and separate the web into narrow bands. Depending on the setting, this construction can only be used for punching. The knife edges are then supported on, or in the material web and not on the lateral surface of the cutting cylinder. Combining different diameters, simultaneous cutting and punching is possible. A cleaning felt ( 120 ), which is located for example between the pressure rollers, lubricates the blades when needed. The holder ( 121 ) for the cleaning felt can be achieved via lateral guides ( 122 ) easily install or remove.

The centering of the knife shaft ( 118 ) can also be applied to the circumference of the spacer rings ( 123 ) via the pressure rollers ( 56 u. 57 ). The pressure rollers are grooved in this case for the immersion of the knife ( 158 ) or eg with axially displaceable pressure rings ( 159 ) fitted.

The position of the blade shaft ( 118 ) is between the two rotating pressure rollers ( 115 ) and the cutting cylinder ( 103 ) clearly defined and therefore does not require its own storage. Only for the determination of the axial position are follower centerings ( 124 ; 125 ) required. The centerings are each slightly on one level ( 126 ) perpendicular to the shaft axis ( 127 ) so that they align themselves in operation after the knife shaft axis. It is advantageous if one of the two centerings is axially sprung (F11). Pressing the blade shaft in the axial direction against the spring-loaded centering, the opposite end of the blade shaft is exposed and the shaft can be removed. Conversely, the shaft is installed.

The axes ( 128 ) of the two rotatably mounted pressure rollers ( 115 ) together with two end plates ( 130 ; 131 ) a rigid traverse ( 188 ), which is stretched between the centering points of the cutting unit.

Again, prevent both sides, slidably mounted torque arms ( 40 ), which into corresponding grooves ( 133 ) on the front sides ( 130 ; 131 ) engage the traverse, a pivoting about the pivot point ( 132 ) of the centering tips. If you push the torque arms upwards, the traverse can be moved around the center ( 132 ) of the centering points ( 3 ; 4 ) pivot.

For the installation of the knife shaft and the setting up of the cutting unit, the carriages of the cutting unit are moved as far as possible upwards and the traverse is pivoted into the assembly position ( 16 ). Subsequently, the ready assembled knife shaft ( 118 ) is inserted by hand and hangs tight between the two centerings ( 124 ; 125 ) below the pressure rollers ( 115 ). Now the traverse is returned to the working position ( 14 ) and, as far as possible, simultaneously feed the two carriages over the respective spindles until the desired cutting result has been achieved. After the depth stops for the slides have been readjusted, the system is ready for operation.

Of the Diameter of the pressure rollers is to avoid sagging preferably chosen big.

Of the The advantage of the described construction is in particular that that the diameter of the knife shaft in relation to the working width is very small may be, whereby the handling of the knife shafts alone for weight reasons considerably is relieved.

The Weight reduction at comparable working width (500mm) is available about in proportion 1:10 Basically allows the cutting also the use of the punching arrangement described above.

For this purpose, the cutting unit with support roller pairs ( 134 ) for the counter-punching cylinder ( 135 ) and with pressure roller pairs ( 136 ) for the punching cylinder ( 137 ), which extends over the races ( 143 ) is supported on the counter punch cylinder, be converted. The force of the pressure roller pairs can be generated manually by means of simple screws. However, in practice hydraulic pressure screws ( 138 ), for the purpose of reproducible results, proven.

The centerings ( 3 ; 4 ) axially hold the rotating punch and punch cylinders in position.

A cleaning felt roll ( 139 ) Depending on the web running direction or operability laterally of the punching cylinder adjustable and rotatably attached who the.

If necessary, the cutting unit can be equipped with pulleys ( 140 ) are equipped before and after the cutting cylinder. Fixed centering tips ( 141 ) between the side walls ( 144 ; 145 ) of the cutter before the respective position of the guide roller. Each side of the pulleys is a sprung piston ( 142 ) axially flexible (F12) stored. Pressing the roller by hand with the axially flexible bearing side against the fixed centering, reduces the distance between the bearings and the role can be removed from the cutting unit, or installed in reverse order. Several positioning options of the centering allow a flexible design of the trajectory.

The described embodiments show only the cheapest Forms of the invention, without their content, as further combinations possible are therefore unnecessary restrict to want.

Claims (77)

Cutting and punching plant for cutting and punching web-shaped materials with different cutting systems, characterized in that one or the blade shafts ( 1 ; 2 ) between two precisely mounted, revolving centering tips ( 3 ; 4 ). Cutting and stamping plant according to claim 1, characterized in that a shaft ( 2 ) in a fixed position between the centering tips ( 3 ; 4 ) rotates. Cutting and stamping plant according to claim 1 u. 2, characterized in that the position of one or both waves ( 1 ; 2 ) over the centering points ( 3 ; 4 ) is repeatedly repositioned axially over a certain adjustment. Cutting and stamping plant according to claim 1-3, characterized in that the axial distance of a movably mounted shaft ( 1 ) to a fixed position shaft ( 2 ) repeatable over independently guided slide ( 5 ) is adjustable. Cutting and punching unit according to claims 1-4, characterized in that one or the shafts ( 1 ; 2 ) via suitable driver connections ( 21 ; 176 ), between center point ( 4 ) and shaft end ( 11 ), can / can be driven. Cutting and stamping plant according to claims 1-5, characterized in that the connection between shaft ends ( 11 ) and centering tip ( 4 ) by means of suitable sealing ( 36 ) allows the implementation of media such as coolant, compressed air, vacuum, etc. Cutting and stamping plant according to claim 1-6, characterized in that the leakage of particular liquid media when removing the waves ( 1 ; 2 ) by suitable valves ( 37 ) is prevented. Cutting and stamping unit with arranged on a shaft circular knives whose cutting strip a cleaning felt, according to one of the preceding claims, characterized in that the immersion depth of the circular blade in the cleaning felt ( 23 ) is adjustable during operation. Cutting and stamping plant according to claim 8, characterized in that the cleaning felt ( 23 ) is rotatable in wear during operation in a new unused position. Cutting and punching unit according to claims 1-9, characterized in that the carriages ( 5 ) via a crossbeam ( 41 ) are rigidly connected to each other for attachment of individual knife holders or other tools. Cutting and stamping plant according to claims 1-10, characterized in that the traverse ( 41 ) in the axial direction over a column ( 42 ) - dovetail or other guide by means of suitable adjusting device, for example threaded spindle ( 43 ) is positionable. Cutting and stamping plant according to claims 1-11, characterized in that the traverse ( 38 ) or trusses ( 7 ) in place of the shaft / waves / 1, 2) between the respective centering tips ( 3 ; 4 ) are fixed. Cutting and punching unit according to claims 1-12, characterized in that each between two centering points ( 3 ; 4 ) fixed traverse ( 38 ) by means of torque arms ( 40 ) against pivoting about the pivot point ( 132 ) of the centering points ( 3 ; 4 ) is secured. Cutting and punching unit according to claims 1-13, characterized in that the delivery of the carriage ( 5 ) independently of each other via manually operated threaded spindles ( 6 ) he follows. Cutting and punching unit according to claims 1-14, characterized in that the position of the carriage on adjustable scale rings ( 12 ) is reproducible readable. Cutting and punching unit according to claims 1-15, characterized in that the carriages ( 5 ) simul by means of electric motor positioning drives tan or independently operated. Cutting and punching unit according to claims 1-16, characterized in that the stroke of the carriages ( 5 ) by adjustable depth stops ( 18 ) can be limited reproducibly. Cutting and punching unit according to claims 1-17, characterized in that the carriages ( 5 ) against a resilient force (F1) are delivered, which is clearly sufficient, the thread backlash between threaded spindle ( 6 ) and mother ( 7 ) with built-in blade shaft ( 1 ) or traverse ( 38 ; 41 . 188 ) to overcome. Cutting and punching unit according to claims 1-18, characterized in that one or both centering points ( 4 ) of the drive side by means of spring-loaded piston ( 175 ; F2)) axially over a limited stroke. Cutting and punching unit according to claims 1-19, characterized in that the centering points ( 3 ) of the operating side by means of threaded spindle ( 8th ) and pistons ( 176 ) are axially retractable and extendable. Cutting and punching unit according to claims 1-20, characterized in that at least the axial position of one of the centering tips ( 3 ) on the operating side and that for the storage of the upper blade ( 19 ), by handwheel ( 146 ) and adjustable scale ring ( 13 ) can be determined reproducibly. Cutting and punching unit according to claims 1-21, characterized in that the axial position of the centering points ( 3 ) on the operator side by appropriate measures ( 14 ) is lockable. Cutting and punching unit in cassette design, whose side walls have stiffening braces ( 147 ; 148 ) are connected according to claims 1-22, characterized in that the struts ( 7 ) are designed as a compressed air distributor. Cutting and punching unit according to claims 1-23, characterized in that the centering points ( 4 ) of the drive side at their shaft ends ( 22 ) with suitable coupling elements ( 32 ) are fitted, which allow for the insertion of the cutting unit in the cutting machine, an independent centering in the respective drive points. Cutting and stamping plant according to claims 1-24, characterized in that the measuring shafts ( 1 ; 2 ) / Cutting cylinder ( 103 ; 135 ) on the shaft ends Rezesse ( 15 ) with threaded holes ( 16 ) for docking a device for the safe installation and removal of the waves. Cutting and stamping plant according to claims 1-25, characterized in that the weight or pressure load of the cutting cylinder ( 103 ; 135 ) by adjustable support rollers ( 134 ) will be carried. Cutting and punching unit with pulleys, whose rotatable mounting between two fixed points ( 141 ) is centered according to one of the preceding claims, characterized in that in each case on one side within the deflection roller ( 140 ) the rotatable bearing ( 142 ) is axially sprung (F12). Pulley according to claim 27, characterized that the deflection roller between each two rotatably mounted centering tips is axially clamped. Cutting cylinder according to one of the preceding claims, characterized in that the cylinder jacket ( 79 ; 106 ) consists of a plastic suitable as a cutting pad. Cutting cylinder according to claim 29, characterized in that between the plastic jacket ( 106 ) and the cylinder core ( 104 ), which preferably consists of steel, a permanently elastic layer ( 105 ), which is firmly connected to the cylinder core. Cutting cylinder according to claim 29 and. 30, characterized in that the plastic jacket ( 106 ) over the permanently elastic layer ( 105 ) of the cylinder core ( 104 ) has shrunk. Cutting cylinder according to claim 29-31, characterized in that the cylinder core ( 104 ) designed to reduce weight or for the passage of media (coolant, compressed air, vacuum, etc.) as a hollow construction. Knife holder with a rear fastening device, wherein an upwardly projecting contour ( 49 ) of the upper part ( 62 ) on the one hand and a downward pointing contour ( 52 ) of a toggle lever ( 50 ) on the other hand between corresponding receiving contours ( 51 ) a tour ( 76 ) is pressed according to one of the preceding claims, characterized in that the toggle lever ( 50 ) at the back of the upper part ( 62 ) is pivotally mounted to the rear. Knife holder according to claim 33, characterized in that the rear upper edge of the upper part ( 62 ) as upwardly projecting rounding ( 49 ) is trained. Knife holder according to claim 33 u. 34, there characterized in that the toggle lever ( 50 ) a downward projecting rounding ( 52 ) having. Knife holder according to claim 33-35, characterized in that the toggle lever ( 50 ) by means of one or more holes ( 69 ) between its pivot point ( 129 ) and the contour ( 52 ) is designed flexibly. Knife holder according to claim 33-36, characterized in that in the front side of the upper part ( 62 ) a blind hole ( 74 ), in conjunction with a lever to facilitate the disassembly of the holder. Knife holder according to claim 33-37, characterized in that the receiving contour ( 51 ) the leadership ( 76 ) runs continuously in the longitudinal direction of one piece or in juxtaposed segments over the entire working width. Knife holder according to claim 33-38, characterized in that the blade bearing or its attachment to a flat slide ( 59 ), which vertically in the upper part ( 62 ) is guided. Knife holder according to claim 33-39, characterized in that the locking of the slide ( 59 ) by means of an end-face clamping screw ( 68 ) he follows. Knife holder according to claim 33-40, characterized in that a locking pin ( 61 ) or the like the stroke of the slider ( 59 ) limited. Knife holder according to claim 33-41, characterized in that in the back of the upper part ( 62 ) one or more horizontally arranged threaded holes ( 75 ) are located. Knife holder according to claim 33-42, characterized in that in the protective covering ( 178 ) for circular knives a holder ( 66 ) for a cleaning felt ( 179 ) is arranged. Knife holder according to claim 33-43, characterized in that the vertical feed of the slide ( 59 ) in both directions via a threaded spindle ( 60 ), whose abutments ( 194 ) at the top ( 62 ) is attached, takes place ( 23 ). Knife holder according to claim 33-44, characterized in that the delivery of the slide ( 59 ) against the resilient force (F4) for compensating the thread backlash when changing direction between threaded spindle ( 60 ) and mother ( 184 ) he follows. Knife holder according to claim 33-45, characterized in that the vertical delivery of the slide ( 59 ) by hand or by means of a defined weight over the extension ( 70 ) takes place against a resilient force (F6) without adjustable depth stop ( 49 ). Knife holder according to claim 33-46, characterized in that the vertical delivery of the slide ( 59 ) by hand or by means of a defined weight over the extension ( 70 ) against a resilient force (F6) to a by means of threaded spindle ( 63 ) adjustable depth stop ( 64 ) he follows ( 26 ). Knife holder according to claim 33-47, characterized in that the vertical delivery of the slide ( 154 ) by hand or by means of a defined weight over the extension ( 157 ) or pneumatically via the air connection ( 151 ) against a resilient force (F6) to a by means of threaded spindle ( 156 ) adjustable depth stop ( 155 ) he follows ( 29 ). Knife holder according to claim 33-48, characterized in that the vertical delivery of the slide ( 154 ) by hand or by means of a defined weight over the extension ( 161 ) or pneumatically via the air connection ( 151 ) against a resilient force (F6) to a by means of threaded spindle ( 156 ) adjustable depth stop ( 155 ) and additionally on the extension ( 161 ), the piston ( 153 ), and the slider ( 154 ) By means of compressed air, an axial adjustment of the knife position is made possible. Knife holder according to claim 33-49, characterized in that the compressed air via the guide ( 186 ) in an annular chamber ( 164 ) and thus an axial movement of the piston ( 165 ) against a resilient force (F14) causes. Knife holder according to claim 33-50, characterized in that the axial stroke of the piston ( 165 ) about the attacks ( 166 ) is limited. Knife holder according to claim 33-51, characterized in that the axial stroke of the piston ( 165 ) via the adjusting screw ( 167 ) is additionally individually limited. Knife holder according to claim 33-52, characterized in that the knife bearing is set obliquely to the course of the sheet especially for the paper cut ( 25 ). Cutting arrangement with rotating circular sharp-angled sharpened knives for cutting and punching web-shaped materials on a shaft ( 1 ) with cutting width-dependent spacer rings ( 109 ) strung and axially tensioned in cooperation with a cutting cylinder, after egg nem of the preceding claims, characterized in that the knives ( 107 ) in a defined rotating position to the cutting cylinder ( 103 ), depending on the requirement tangential (cutting or squeezing) or contactless (punching) are brought. Cutting arrangement according to claim 54, characterized in that collectively mounted knives ( 107 ) with different diameters ( 11 ) can be combined for cutting and punching at the same time. Cutting arrangement according to claim 54 and 55, characterized in that the knife shaft ( 118 ) between two rotating pressure rollers ( 115 ) on the one hand and the cutting cylinder ( 103 ) or its lateral surface ( 79 ) on the other hand, over the entire working width, only at the periphery ( 116 ) of the knife edges ( 119 ) is centered. Cutting arrangement according to claims 54-56, characterized in that the outer layer ( 114 ) of the pressure rollers ( 115 ) consists of a permanently elastic material. Cutting arrangement according to claim 54-57, characterized in that the centering of the knife shaft ( 118 ) on the one hand on the circumference of the spacer rings ( 123 ) over the pressure rollers ( 115 ) or their annular projections or axially displaceable pressure rings ( 159 ) and on the periphery ( 116 ) of the knife edges ( 119 ) on the cutting cylinder ( 103 ), wherein the knives into corresponding annular grooves ( 158 ) or clearances of the pressure rollers ( 115 ) can dive. Cutting arrangement according to claim 54-58, characterized in that the knife shaft ( 118 ) at the ends axially by revolving centers ( 124 ; 125 ) is fixed. Cutting arrangement according to claim 54-59, characterized in that one of the revolving centerings ( 124 ) is axially sprung (F11). Cutting arrangement according to claim 54-60, characterized in that the revolving centerings ( 124 ; 125 ) at one level ( 126 ) perpendicular to the knife shaft axis ( 127 ) are slightly displaceable. Cutting arrangement according to claim 54-61, characterized in that preferably between the pressure rollers ( 115 ) a cleaning felt ( 120 ) with appropriate support ( 121 ), which lubricates the blades of the knife shaft permanently. Cutting arrangement comprising one or more stationary cutting blades for separating and punching web-shaped materials on a rotating cutting cylinder according to one of the preceding claims, characterized in that the cutting edges or tips of the cutting blades ( 77 ) in a precisely defined position or distance to the lateral surface ( 79 ) of the cutting cylinder ( 103 ) are located. Cutting arrangement according to claim 63, characterized in that the blades ( 77 ) independently by means of adjusting screws ( 86 ) are positionable. Cutting arrangement according to claim 63 and 64, characterized in that the blade (s) ( 88 ; 89 ; 90 ) within a holder ( 80 ) about an axis ( 81 ) are pivotally mounted. Cutting arrangement according to claims 63-65, characterized in that the blade (s) ( 88 ; 90 ) within a holder ( 80 ) between the pivot axis ( 81 ) and its cutting edge, against a resilient support ( 83 ; F7) are adjustable. Cutting arrangement according to claim 63-66, characterized in that the adjustment of the blade position via a, as a link between the blade top and adjusting screw ( 86 ) acting, flat slide ( 98 ) he follows. Cutting arrangement according to claims 63-67, characterized in that the blades are formed by comb-shaped webs ( 96 ), according to the required cutting width separated from each other, are guided. Cutting arrangement according to claims 63-68, characterized in that the holder ( 80 ; 100 ) via a joint ( 99 ), is mounted transversely to the web direction, pivotally. Cutting arrangement according to claims 63-69, characterized in that the pivot angle of the holder ( 100 ) by means of adjustable stop ( 187 ) is adjustable exactly. Cutting arrangement according to claim 63-70, characterized in that the pivot axis ( 81 ) of the blades ( 77 ; 89 ) between cutting edge and resilient buffer ( 84 ; F8) is arranged. Cutting arrangement according to claims 63-71, characterized in that the blades ( 77 ) at its bottom as a pivot point at least one upward bulge ( 180 ) show. Cutting arrangement according to claim 63-72, characterized in that the blades on their underside as a pivot point at least one after down directed projection ( 183 ) exhibit. Cutting arrangement according to claims 63-73, characterized in that the blades ( 93 ; 94 ) are guided linearly adjustable. Cutting arrangement according to claim 63-74, characterized in that the linearly adjustable blades ( 93 ) in each case in a slot-shaped guide, on one or two projections ( 182 ) against appropriately arranged elastic buffers ( 91 ; F9) are adjustable. Cutting arrangement according to claims 63-75, characterized in that the linearly adjustable blades ( 94 ) in each case in a slot-shaped guide, against a, on a cross strut ( 95 ) elastic buffer ( 92 ), which by a hole contour ( 181 ) of all blades protrudes, are adjustable. Cutting arrangement according to one of the preceding claims, characterized in that the difference between outer and bore diameter of the annular circular blade ( 107 ; 116 ; 119 ) at different sizes, regardless of the outer diameter is relatively constant or especially for larger diameters.