DE102008000745A1 - Material web e.g. paper web, guiding device for paper or cardboard web winding machine of rotary slitting machine, has nozzles that are formed and arranged such that partial turbulent fluid flow is generated - Google Patents

Abstract

The device (3) has guiding elements (5.1-5.5) consecutively arranged in a web guiding direction for indirect supporting of a material web (M). Generating units (18.1-18.3) generates a fluid e.g. air, flow between the material web and surfaces (17.1-17.3) of the guiding elements. The generating units include nozzles (9.11, 9.1n, 9.21, 9.2n, 9.31, 9.3n) pointing to a rolling direction of the material web, and arranged in a part of the guiding elements. The nozzles are formed and arranged such that partial turbulent fluid flow is generated.

Description

The The invention relates to a device for guiding a material web in a processing machine, in particular a machine for Winding up paper or cardboard webs into winding rolls, comprising a plurality of successively arranged in the web guide direction Guide elements and means for generating a fluid flow between the material web facing surface of Guide elements and the material web. The invention relates Furthermore, a machine for winding webs of material, in particular Paper or board webs.

devices for guiding material webs, in particular for threading a web of material in a device for winding such Web rolls, such as slitters, are in a variety of prior art designs known. For introducing the material webs are different Systems are known, in part, by a considerable labor and Construction costs are conditional. It is designed in particular the introduction of a new material web start to a Support or support roll of a winding machine with a partially in Underground running track guide route relatively difficult because this route is partly not freely accessible. to safe guidance are elaborate conveyor belts or ligament swing required.

From the publication DE 39 33 861 A1 an embodiment is previously known, in which the material web is fed into a processing machine, in particular in a machine for winding paper or board webs to wound rolls by means attached to the web start, extending through the web guide path drag element in the processing machine, to an elastic tensile band is provided, which is introduced by means of compressed air, which flows substantially laminar and parallel to a guide element arranged along the web guide path in the web guide path and then the tape and the attached material web is pulled through the web guide path. The belt is transportable by a laminar flow of compressed air along a guide member through a curved path. The web guide element is preferably formed as a groove with flat jet nozzles arranged at regular intervals. Interruptions are provided on the guide elements in the locations crossing the web guide, so that the course of the web is not impaired. To insert the material web, the elastic tension-resistant band is first introduced by means of compressed air in the web guide path and then pulled the material web fastened therein through the web guide path and removed again from this.

From the publication DE 40 18 883 C1 a device for approaching the beginning of a material web, in particular paper web, previously known from below to a slitter-roll by means of a series of guide plates which lead the web start up and which are seen in the web running direction at least steeper and perpendicular, which are also assigned blowing organs, each having a transversely to the web running direction arranged hollow body and a number of arranged in the web running direction nozzles, which are seen in the web running direction respectively between two guide plates, wherein that blowing member which is upstream of the first vertical direction in the web running direction plate having turbulence generating nozzles. This ensures that on the one hand a perfect web guide is achieved free from sticking of the material web to the guide elements, further fluttering of the material web is reliably avoided. Due to the arrangement of the nozzle whose effect in relation to the guide path of the material web is tuned so that consistently a corresponding air cushion is achieved.

Of the Invention is based on the object, a device for guiding a material web in a processing machine, in particular a machine for winding paper or cardboard webs into wound rolls to further develop such that the web also independent can be transported by the flow characteristic and further when transporting the material web if possible just above the entire width is guided.

The solution according to the invention is characterized by the features characterized independent claims 1 and 21. Advantageous embodiments are in the subclaims described.

A Device for guiding a material web in a processing machine, in particular a machine for winding paper or board webs to winding rolls, comprising a plurality of successively arranged in the web guide direction Guide elements and means for generating a fluid flow between the material web facing surface of Guide elements and the material web, according to the invention thereby characterized in that the means in at least a part of the guide elements arranged and with a directional component in web direction of travel having aligned nozzles which are formed and are arranged to be suitable, an at least teilurburbulente To generate fluid flow.

The solution according to the invention allows the generation of a directed fluid flow in the web-guiding direction to support the transport of the material web at a small distance from the guide element on a moving fluid cushion, whereby a gaseous medium, in particular air, is preferably used as the fluid. This flow reliably prevents adhesion of the material web to the guide element and a state of sliding friction generating relative movement between the guide element and web surface, which can lead to damage to the web and adverse effects on the transport of the web. The material web is securely and completely supported in the region of the guide elements via the air cushion, so that undesirable relative movements between the guide element and the material web are avoided. By generating a fluid flow with turbulence component of the control engineering effort compared to purely laminar fluid flows can be kept low.

The Nozzle-containing guide elements are preferred executed in the form of guide plates. These extend over much of the width the material to be transported web, preferably via the theoretically maximum material web width. The plate surface is preferably executed flat. This will be a safe Support of the web during transport the web also guaranteed in web direction.

to Avoidance of damage to the material web during stall is the outlet opening of a single nozzle preferably in a plane with the material web facing surface arranged the guide element.

In terms of the arrangement and orientation of the individual nozzles exist a variety of ways. Preferably, at one Guide element in each case a plurality of nozzles provided in the width direction of the guide element over the device viewed spaced apart from each other. Furthermore, a plurality of nozzles are provided, which in Web guiding direction of the material web on the guide element spaced apart from each other. The widthwise of the Guide element and / or web guiding direction spaced apart on the guide element arranged nozzles can according to a first embodiment be arranged at the same distance from each other. This offers the Advantage that with the same orientation of the nozzles continuous Flow conditions over the entire Width of the material web, in particular with a fixed proportion be provided in web direction.

are according to a further embodiment in the width direction the guide element and / or web guiding direction spaced apart on the guide element arranged nozzles arranged at different distances from each other, can in these directions a different flow profile can be adjusted.

The Alignment of each nozzle can be for everyone Nozzles on a guide element equal or but done differently. Preferably, at least a part of in the width direction of the guide element and / or web guiding direction at the guide element spaced nozzles arranged so arranged and aligned, that the resulting main flow direction of the fluid runs in the web-guiding direction of the material web and thus also produces a transport-supporting effect.

Becomes according to an advantageous further development Part of the widthwise direction of the guide element and / or Web guide direction spaced on the guide element arranged nozzles at an angle to the Web guiding direction arranged, preferably in one Angles between 0 ° and 90 ° can be added Steering, centering and / or spreader effects on leading to Material web can be achieved. These are preferably in the width direction the guide element and / or web guiding direction arranged spaced on the guide element in the lateral edge regions Nozzles at an angle to the web guide direction arranged or aligned.

Of the Outlet cross section of a single nozzle is either symmetrical or asymmetrical with respect to one in the web guiding direction extending or inclined formed to this arranged axis. Depending on the orientation of the nozzle to the web guiding direction can in the first case the same flow conditions with respect to the axis of symmetry of the outlet cross-section of the individual Nozzle can be guaranteed, depending on the orientation the nozzle to different flow conditions can lead in web direction. An asymmetrical configuration of the outlet cross-section offers in combination with under different orientation of the individual nozzles the advantage of a predefined setting of flow conditions, the effect being mainly the same Nozzles only by the design of the outlet cross-section can be generated.

Preferably are for the sake of standardization whenever possible a plurality of nozzles with the same outlet cross-section and the same exit direction arranged.

The turbulences are in a simple manner by the design of the individual nozzles generated. Preferably, these are provided from the inlet to the outlet opening with changing cross-sectional geometry and / or dimensioning.

In a particularly advantageous embodiment are to achieve a directed and large-scale flow formed in the direction of the cable guide shell-shaped Nozzles inserted. The outlet cross section of the individual Nozzle is designed ring segment-shaped. Of the Cross section, in particular the dimensions and / or geometry the cross-sectional area of the nozzle in the direction of flow from Entry to the exit port is preferred mutable. In this case, the cross section of the nozzle in the direction of flow from the inlet to the outlet opening change steadily or gradually, at least in some areas, especially enlarge.

The Nozzles may be separate elements or preferably executed integrated into the guide plate as a structural unit be. The second solution offers the advantage of a simple one Production of the nozzles by appropriate separation or shaping process in the production of guide plates.

The Means for generating an at least partially turbulent fluid flow further comprise a fluid supply and supply system, wherein each nozzle having a separate guide element Fluid Bereitstellungs- and / or leadership system or all nozzles having guide elements Fluid supply and / or management system in common assigned. The first option offers the advantage a self-sufficient admission of the individual guide plates. The second solution offers the advantage of low component count.

The individual nozzles on a guide element can individually, in groups or jointly controllable.

The inventive device is in particular Advantageously in a machine for winding material webs, in particular paper or board webs, comprising at least one winding station used. This may be embodied as a carrier roll winding device or a backup roll winding device become. According to a particularly advantageous embodiment if the machine is designed as a slitter-winder, comprising a cutting device.

The Invention will be described below with reference to exemplary embodiments explained in more detail with reference to the figures. Show it:

1 a schematically simplified representation of a machine for packaging material web rolls in a view from the right with inventively designed guide elements;

2 an embodiment of a guide element based on a section of a view according to 1 ;

3a and 3b based on a view from above on a guide element possible arrangements of the nozzles;

4 a particularly advantageous embodiment of a nozzle having guide element;

5a and 5b a particularly advantageous embodiment of a nozzle in two views; and

6 an advantageous embodiment of a guide element with different orientation of the nozzles.

The 1 illustrates in schematic simplified representation on the basis of a view from the right a section of a device 1 for winding a material web M to a winding roll 2 , the arrangement and construction of a device 3 for guiding the material web M inside the device 1 for winding the material web M to a winding roll 2 , The device 1 is part of a so-called slitter-winder 4 , The device 3 to guide the material web M is mainly the performance of the material web tip when starting the machine or after an exchange of the finished wound reel 2 against a newly wrapped winding tube 13 , Regarding the execution of the device 1 for winding the web M exist a plurality of possibilities. This may be a backup roll winder 14 with support of the winding roll 2 on the outer circumference 15 a back-up roll 16 as well as a, but not shown here carrier roll winding device. The performance of the material web M, in particular the material web tip, takes place with the aid of guide elements 5 , in particular in the form of so-called guide plates 6 , These preferably each extend along a partial region of the web guide path 8th the material web M for insertion into the device 1 or to the specifically to be wrapped winding tube 13 , The width b _{max of} the guide plates 6 preferably corresponds substantially to the theoretical maximum width b _max of the device 1 be wound web of material M. In this case, depending on the configuration of the device 1 either only one or a plurality of winding stations 7 provided, each of the individual winding stations such a device 3 is assigned to guide the material web M. The Füh guide elements 5 In this case, they can be arranged directly one behind the other, or they can be spaced from one another with an intermediate arrangement of guide and / or drive elements, in particular drive and / or deflection rollers. According to a particularly advantageous embodiment, the material web M along the web guide path 8th almost completely supported guided. The guide elements can be designed in various ways, for example in the form of guide grooves or baffle elements. It is also conceivable to support the web guide by aids. In this case, the material web M can be transported by means of a corresponding towing belt, also the web guide can be supported by guide and / or drive rollers and by blowing air. The guide is done here by way of example on the guide elements 5.1 to 5.5 , wherein at least a part of the guide elements 5.1 to 5.5 as guide plates 6.1 to 6.3 are formed, according to the invention along the web guide path 8th on the guide plates 6.1 to 6.3 jet 9.11 to 9.1n . 9.21 to 9.2n respectively 9.31 to 9.3n for generating an at least partially turbulent and directed fluid flow in the transport direction of the material web M are provided. The individual nozzles 9.11 to 9.nn are with a fluid supply and / or guidance system 10.1 to 10.n , here 10.1 to 10.3 coupled. This will between the along the web guide path 8th to the guide elements 5.1 to 5.n facing surface of the material web M and the guide element 5.1 to 5.n , especially the surface 17.1 to 17.3 the nozzles having guide plates 6.1 to 6.3 generates a moving air cushion, so that the material web M quasi contactless along the guide elements 5.1 . 5.2 and 5.5 is guided with a minimum distance to this. As a result, the material web M floats on the air cushion, thereby gluing the material web M to the individual guide plates 6.1 to 6.3 is avoided with certainty. The orientation of the over the nozzles 9.11 to 9.3n trained air cushion generated flow forces also cause a support of the transport of the material web M along the desired web guide path 8th , so that it may be possible to dispense with separate drive rollers. The individual nozzles 9.11 to 9.1n to 9.n1 and 9.nn , here exemplary 9.11 to 9.1n . 9.21 to 9.2n and 9.31 to 9.3n are formed and arranged such that the flow force F _sres resulting _{therefrom is} oriented such that the main flow direction _coincides with the conveying direction of the material _web M along the guide _path 8th matches. This means that the flow force F _{Sres is characterized} at least by a component, which in the direction of the web _guide path 8th is aligned and larger than the components in the other directions.

The 2 illustrated by a magnification according to 1 a section of the device 1 , in particular in the region of the guide element 6.3 , Recognizable are in leadership 8th the material web M in the guide plate 6.3 arranged nozzles 9.31 to 9.3n , In particular, their arrangement in the guide direction of the material web M along the web guide path 8th considered. These are arranged here by way of example with different distances from each other in the guide direction of the material web M.

Regarding the geometric shape, design and orientation of the individual nozzles 9.1 to 9.3n exist a variety of ways. Depending on the desired effect, all nozzles 9.n1 to 9.nn a guide plate 6 preferably be configured identically and in terms of their arrangement at an angle α, preferably in the range between> 0 ° and ≤ 90 °, that is transverse to the web guide path 8th the material web M and in the direction of the web guide path 8th preferably be arranged with uniform distances from each other. The arrangement may also be at an angle β between Führungswegrichtung and nozzle, in a plane passing through the surface 17.1 to 17.n the guide elements 5.1 to 5.5 and a perpendicular thereto, in particular perpendicular to the guide direction can be described, take place. The angle β is preferably in the range between> 0 ° and ≤ 90 °.

An embodiment with the same configuration, arrangement and orientation of the individual nozzles 9.1 to 9.n. is in 3a played. This allows over the entire Bahnführungsweg 8th in terms of guidance on a guide plate 6 as well as the width of the guide plate 6 the same effects with respect to the support of the material web M are achieved. In contrast, illustrates the 3b an example of an embodiment with different arrangement of the individual nozzles 9.1 to 9.n. in the direction of leadership, which illustrates here by means of arrow and with 8th is designated for the guide way and across this. In 3b are exemplified different distances a1 to, in particular a1 and a2 provided in the guide direction, while the nozzles 9.1 to 9.n. with the distances b1 to bn to each other across the width b _{max of} the guide plate 6 are arranged.

In terms of The usable nozzle form also consist of a variety of possibilities. It is crucial that the nozzle shape must be capable of generating turbulence in the flow.

According to a particularly advantageous embodiment, as for example in the 4 clarified, are the individual nozzles 9.1 to 9.n. preferably as so-called shell nozzles 11.1 to 11.n , as well as in the 5a and 5b illustrated, formed. This nozzle shape is characterized by a in Flow direction between the fluid supply device and the outlet opening 12 changing flow profile cross section and a ring-segment-shaped outlet cross-section characterized.

The 4 illustrated by way of example with reference to a section of a perspective view of a guide plate 6 the arrangement of nozzles 9.1 to 9.n. , these being called clam nozzles 11.1 to 11.n are formed. Is attached to the guide plate 6 a coordinate system is created, the x-direction is through the guide path 8th on the guide element 5 characterized. The y-direction is transverse thereto, while the z-direction is the height direction of the guide member 5 describes.

The arrangement of the nozzles 9.1 to 9.n. takes place here in the y-direction, that is transverse to the guide path 8th in rows of nozzles, each arranged by the arrangement of uniformly spaced individual nozzles transverse to the guide 8th characterized in that the rows are over the width b _{max of} the guide plate 6 extend. Furthermore, a plurality of such rows are parallel to one another in the guide direction of the material web M, that is to say in the x direction of the guide plate 6 arranged. However, the individual rows are arranged offset to one another in the width direction such that in each case the adjacent rows are characterized by an arrangement on a gap. The nozzles 9.1 to 9.n. are here through an outlet opening 12.1 to 12.n characterized in the width and in the longitudinal direction of the guide plate 6 considered variable in terms of dimensions. In the case shown, the maximum extent of the outlet opening takes place in the longitudinal direction, that is, in the direction of the desired guide path 8th , The through the outlet openings 12.1 to 12.n The fluid flow imprinted directional components at an angle to the web-guiding direction are here aligned smaller than in the direction of the main component of the flow.

The 5a exemplifies an embodiment of a nozzle 9 in the form of a shell nozzle 11 in a view from above. This is characterized by a substantially annular segment-shaped cross section of the outlet opening 12 characterized. 5a illustrates a view from above on the guide element 5 , The 5b illustrates the nozzle 9 viewed in cross section in a section through an axial section through the guide element 5 , It can be seen that the nozzle 9 further with respect to its cross-section in the z-direction, that is in the height direction of the guide plate 6 trained guide element 5 , Also characterized by a changing cross-section, in which case the outlet opening 12 from the nozzle is characterized by a cross-sectional enlargement. The cross-sectional profile within the nozzle 9 in the flow direction is characterized here essentially by an inclination with respect to the z-direction. However, it is also conceivable to make this area curved here to assist and influence the flow. The geometric shape and / or dimensions of the cross-sectional areas can change in the direction of flow.

According to a particularly advantageous development, as in the 6 represented, the nozzles 9 not uniformly arranged in the guide direction of the material web M, but partly also at an angle relative to the web running direction. As a result, steering effects, spreader effects and centering effects on the material web M can be generated specifically. The desired effect is dependent on the size of the angle of the nozzle and the symmetry of the nozzle bezo conditions on the material web running direction. It can, as for example in the 6 illustrates a part of the nozzles or a plurality of these an angle α between> 0 and ≤ 90 degrees with respect to the running direction, wherein the angle α is measured in a plane passing through the surface of the guide member 5 is characterized. An angle β, not shown here, which in a plane perpendicular to a plane characterized by web guiding direction and web width, that is, a plane perpendicular to the surface of the guide element 5 can also be in the range> 0 ° and ≤ 90 ° between web direction and nozzle orientation, which describes the direction of flow of the nozzle is determined.

The 6 clarified in a view from above on the nozzle 9 having guide element 5 Possibilities of alignment of the nozzles 9 to achieve advantageous additional effects. It can be seen that preferably in the region of the center of the material web M, the main flow direction of the over the nozzles 9.1 generated fluid flow parallel to the guide path 8th is aligned, while in the edge regions of the material web M and thus the edge regions on the guide element 5 an extension effect on both sides by the nozzles inclined in this area at an angle α, β 9.2 opposite the web guiding direction 8th is achieved.

The solution according to the invention is not on in the 1 to 6 limited embodiments shown. This relates in particular to the specific configuration of the nozzle shape, in particular of the nozzle exit from the guide plate 6 and thus parallel to the guide element or the guide plane, and the single nozzle is preferably formed symmetrically. However, it is also conceivable to achieve the said effects such as spreader effect and centering fect an asymmetrical configuration, so that here locally within the guide area by the flow due to different effects on the leading material web M can be achieved.

1

contraption for winding up a material web

2

reel

3

contraption for guiding the material web

4

Winder

5, 5.1-5.5

guide element

6 6.1-6.3

guide plate

7

winding station

8th

guideway

9 9.11-9.1n

jet

9.n1-9.nn

jet

10.1-10.n

Fluidbereitstellungs- and / or leadership system

11 11.1-11.n

Muscheldüse

12 12.1-12.n

nozzle exit

13

mandrel

14

Backup roll winder

15

outer periphery

16

supporting roll

17.1-17.3

surface

18.1-18.3

medium for generating a fluid flow

a1, a2, on

distance

b b1, b2

distance

b _max

maximum width

F _Sres

flow force

M

web

α

angle

β

angle

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3933861 A1 [0003]
• - DE 4018883 C1 [0004]

Claims (22)

Contraption ( 3 ) for guiding a material web (M) in a processing machine, in particular a machine ( 1 . 4 ) for winding paper or cardboard webs into wound rolls ( 2 ), comprising a plurality of guide elements arranged one behind the other in the web guiding direction ( 5 . 5.1 - 5.5 ) for the at least indirect support of the material web (M) and means ( 18.1 - 18.3 ) for generating a fluid flow between the material web (M) facing surface ( 17.1 - 17.3 ) of the guide elements ( 5 . 5.1 - 5.5 ) and the material web (M), characterized in that the means ( 18.1 - 18.3 ) in at least a part of the guide elements ( 5 . 5.1 - 5.5 ) arranged with a direction component in web-direction-oriented nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) formed and arranged to be capable of generating at least partially turbulent fluid flow. Device according to claim 1, characterized in that the nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) having guide elements ( 5 . 5.1 . 5.2 . 5.5 ) as guide plates ( 6 . 6.1 - 6.3 ) are executed. Apparatus according to claim 1 or 2, characterized in that the outlet opening ( 12.1 - 12.n ) of a single nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) in a plane with the material web (M) facing surface ( 17.1 - 17.3 ) of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) is arranged. Contraption ( 3 ) according to one of claims 1 to 3, characterized in that on a guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) a plurality of nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) are provided, which in the width direction of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) over the device ( 3 ) are spaced apart from each other. Device according to one of claims 1 to 4, characterized in that on a guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) a plurality of nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) are provided in the web guiding direction ( 8th ) of the material web (M) on the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) are arranged spaced from each other. Contraption ( 3 ) according to one of claims 1 to 5, characterized in that in the width direction of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) and / or web guiding direction ( 8th ) on the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) spaced nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) are arranged at the same distance (a, b) to each other. Contraption ( 3 ) according to one of claims 1 to 6, characterized in that in the width direction of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) and / or web guiding direction ( 8th ) on the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) spaced nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) are arranged at different distances (a1, a2, b1, b2) from each other. Contraption ( 3 ) according to one of claims 1 to 7, characterized in that at least a part of the widthwise direction of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) and / or web guiding direction ( 8th ) on the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) spaced nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) are arranged and aligned in such a way that the main flow direction of the fluid in the web guiding direction ( 8th ) of the material web (M) extends. Contraption ( 3 ) according to one of claims 1 to 8, characterized in that a part of the widthwise direction of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) and / or web guiding direction on the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) spaced nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) at an angle (α, β) with respect to the web guiding direction ( 8th ) are arranged. Contraption ( 3 ) according to claim 9, characterized in that in the width direction of the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) and / or web guiding direction on the guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) spaced in the lateral edge regions arranged nozzles ( 9.2 ) at an angle (α, β) with respect to the web guiding direction ( 8th ) are arranged. Contraption ( 3 ) according to one of claims 1 to 10, characterized in that the cross section of the outlet opening ( 12.1 - 12.n ) of the individual nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) symmetrical with respect to one in the web guiding direction ( 8th ) or inclined to this arranged axis is formed. Contraption ( 3 ) according to one of claims 1 to 10, characterized in that the cross section of the outlet opening ( 12.1 - 12.n ) of the individual nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) asymmetrically with respect to one in the web guiding direction ( 8th ) or inclined to this arranged axis is formed. Contraption ( 3 ) according to one of claims 1 to 12, characterized in that the cross section of the outlet opening ( 12.1 - 12.3 ) of the individual nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) is executed ring segment-shaped. Contraption ( 3 ) according to one of claims 1 to 13, characterized in that the cross section of the nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) in the direction of flow from the inlet to the outlet ( 12.1 - 12.n ) is changeable. Contraption ( 3 ) according to claim 14, characterized in that the cross section of the nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) in the direction of flow from the inlet to the outlet ( 12.1 - 12.n ) is constantly changing, in particular increased, at least in some areas. Contraption ( 3 ) according to claim 14, characterized in that the cross section of the nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) in the direction of flow from the inlet to the outlet ( 12.1 - 12.n ) considered gradually changeable. Contraption ( 3 ) according to one of claims 1 to 16, characterized in that the means comprise a fluid supply and supply system, each nozzle ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) having guide element ( 5 . 5.1 . 5.2 . 5.5 . 6.1 . 6.2 . 6.3 ) a separate fluid supply and / or guidance system ( 10.1 - 10.3 ) assigned. Contraption ( 3 ) according to one of claims 1 to 16, characterized in that the means ( 18.1 - 18.3 ) a fluid supply and supply system ( 10.1 - 10.3 ), all nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) having guiding elements ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) the fluid supply and / or guide system is assigned together. Contraption ( 3 ) according to one of claims 1 to 18, characterized in that the individual nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) of a guide element individually, in groups or can be controlled together. Contraption ( 3 ) according to one of claims 1 to 19, characterized in that the nozzles ( 9 . 9.1 . 9.2 . 9n . 9.11 - 9.1n . 9.21 - 9.2n . 9.31 - 9.3n . 9.n1 - 9.nn ) integral part of the guiding elements ( 5 . 5.1 . 5.2 . 5.5 . 6.1 - 6.3 ) are. Machine ( 1 . 4 ) for winding material webs (M), in particular paper or board webs, comprising at least one winding station ( 7 ) and a device ( 3 ) for guiding the material web (M), in particular paper or board web according to one of claims 1 to 20. Machine ( 1 . 4 ) according to claim 21, characterized in that it comprises a cutting device.