EP2113479B1 - Method for conveying a continuous strip of material and coiling machine for carrying out the method - Google Patents

Description

The invention relates to a method for transferring a running material web, in particular a fibrous web, to a new winding core, wherein the material web is preferably guided over a peripheral region of a preferably displaceable and with a wound roll to be wound forming a winding drum and then wound onto a winding core to be produced wound roll is, preferably immediately before reaching a predetermined roll diameter in the looped by the web circumference of the carrier drum to samebige with formation of a new winding nip is brought and the web after formation of the new winding nip between the new hub and the carrier drum by means of at least one Separating device severed and an adhesive medium between the layers of the material web is introduced by means of at least one applicator.

Furthermore, the invention relates to a winding machine according to the preamble of independent claim 9, which is particularly suitable for carrying out the method according to the invention, and a winding core according to the preamble of independent claim 15, which is particularly suitable for carrying out the method according to the invention.

Such transfer methods and winding machines are used for example in paper or board making, the finished and running paper or board web without interrupting the manufacturing process, that is, without switching off the paper or board machine, successively to several hubs, which are also referred to as empty reels to bobbins wind. Also, they can serve to wrap an already wound wound roll.

In this case, care must be taken that the new beginning of the material web resulting from the severing of the material web is supplied to the new winding core in a process-reliable, fast and quasi-effort-neutral manner in order to subsequently form a new winding roll thereon. Further, it is important, both in terms of cleanliness and runnability of the winding machine, that the last layers of the web wound onto the formed wound roll be end-bonded. By Endlagenverklebung the emergence of a disturbing Fetzenflugs when braking the produced winding roll is avoided, but at least noticeably reduced. In addition, the number of loose outer layers, which can assume a value of up to 50 loose outer layers, significantly reduced on the wound roll produced.

An aforementioned method for transferring a running material web, in particular a fibrous web, to a new winding core is known, for example, from the German publication DE 100 85 234 T1 known. In this method, the adhesive or the like is applied to the surface of the finished roll. While the range and amount of application will ensure that the final layers of webs wound onto the formed reel are ideally end-bonded, the amount of adhesive required is very large. The disclosed method thus entails the disadvantage of an extreme consumption of adhesives and thus very high operating costs.

Furthermore, it is provided in one embodiment that the adhesive is placed directly in front of the winding nip between the carrier drum and the wound roll to be produced on the surface of the wound roll to be produced. For this purpose, an adhesive applying part is attached to a collection device, in particular a so-called gooseneck. If, in this embodiment, an unexpected material web break occurs, then the adhesive can reach the surface of the carrier drum, whereby it then becomes in is disadvantageously contaminated. The elimination of this contamination will usually bring a usually long-lasting production loss with it.

Furthermore, from the German Offenlegungsschrift DE 103 09 049 A1 a method for transferring a moving material web according to the preamble of claim 1 is known. A winding machine according to the preamble of claim 9 and a winding core according to the preamble of claim 15 are also known. In this method, the material web is separated by a single parting line and during the separation of the material web, an adhesive is applied to the material web, by means of which the material web is connected to a new winding core. In this case, the adhesive is applied to the material web in an area at least partially sweeping over the parting line. The applied adhesive can in this case cause a final layer bonding of the last material web layers on the wound roll produced, this Endlagenverklebung due to the successful passage of the adhesive through the new winding nip formed by the new winding core and the winding drum probably no large and thus sufficiently process-safe bonding will effect. Consequently, the last material web layers, at least during braking of the produced winding roll can loosen again and thereby possibly cause a disturbing shred flight.

Furthermore, from the German patent application DE 103 43 448 A1 a method for preparing a winding of a moving material web on a winding drum for further processing known. In this method, at least one adhesive area is produced on the outer layer by means of at least one application device. The applicator is located in the vicinity of the winding drum, so in the free train of the web in front of the winding drum. This site of action of the applicator requires on the one hand increased investment and operating costs, on the other hand, the gluing possibilities and variants are very limited due to the limited space available. Furthermore, in this method, the formation of the free train in the material web, so the resolution of the formed between the winding drum and the carrying drum winding nip of disadvantage. This release of the winding gap provides the risk of air bubbles between the individual

Laying of the web and the non-maintenance of the "wrapped" web tension during the transfer process. Thus, the use of an expensive and elastic coating having Luftabquetschwalze is essential.

And from the German utility model DE 20 2004 009 144 U1 is a winding machine for transferring a moving material web known. In this case, it is provided that at least one adhesive arrangement in the direction of travel of the material web is arranged immediately after the discharge point of the material web from a carrier drum. Also in this disclosed winding machine turn out the disadvantages just mentioned, so increased investment and operating costs, limited adhesive options and variants and possible use of an expensive Luftabquetschwalze.

It is therefore an object of the invention, both a method and a winding machine of the aforementioned types such that the aforementioned disadvantages of the prior art significantly reduced, preferably even completely avoided. In particular, the outer layer Committee should be reduced and a high-quality construction of the winding roll can be achieved. In addition, the best conditions for optimal runnability and favorable investment and process costs should be given.

Furthermore, a winding core of the type mentioned should also be developed so that it is particularly suitable for carrying out the method according to the invention.

This object is achieved in a method of the type mentioned according to the invention that the adhesive medium in the direction of the web in front of the new, formed between the new hub and the carrier drum winding nip on the upper side and at least one strip on the web by means of at least one application device is applied so that it passes through the new winding nip in a region in which the new winding core is provided with at least one radially arranged on the circumference recess, wherein the at least one recess provided in such a way is that the adhesive applied to the web adhesive medium passes through the new winding nip untouched.

The object of the invention is completely solved in this way.

The combination of the characterizing features, ie the top-side application of at least one strip of adhesive medium on the material web and the provision of at least one circumferentially radially arranged recess on the new winding core, creates the possibility that the adhesive medium applied to the material web passes through the new winding nip untouched. Thus, even small amounts of adhesive medium can contribute quasi-loss-free to an effective final bonding of the last layers of wound on the wound roll produced material web. The term "strip" here defines only a maximum area or a shape of the applied adhesive medium; For example, the adhesive medium can also be applied as a "bead" known to the person skilled in the art.

Moreover, the application of the adhesive medium in the running direction of the material web in front of the new, formed between the new hub and the carrier drum winding nip of process technology advantage. Thus, on the one hand, the winding gap formed between the winding roll and the carrying drum does not have to be opened; on the other hand, there is sufficient space for the application of the adhesive medium.

It is particularly advantageous if the adhesive medium is applied to the material web in front of the peripheral region of the carrier drum which is looped around by the material web. Because this can be completely avoided that adhesive medium can reach the surface of the carrier drum, either because of an unexpected material web break or due to a wrong control of the applicator.

The adhesive medium generally achieves adhesion, the adhesive forces on the Contact surfaces of two different or the same substances by molecular forces comprises. The substances may be in solid or liquid state. In the field of adhesives, the adhesion of adhesive layers to the adherend surfaces is understood to be adhesion. The processes of adhesion are not fully understood. They are particularly difficult because the dependencies between the adhesive systems and the various adherend surfaces are very complex.

Thus, in the context of the present invention, the adhesive medium may be water, a preferably water-soluble liquid adhesive, in particular starch, a two-component adhesive, a hotmelt adhesive or an adhesive that can be activated by means of UV radiation, for example. Of course, the adhesive medium may also be a preferably water-soluble adhesive tape, in particular a ready-made adhesive strip or a die-cut adhesive tape roundel.

In a first preferred embodiment, the adhesive medium is applied to the material web in at least two, preferably several and preferably uniformly distributed, in particular symmetrically arranged to the middle of the web. Thus, the process reliability with respect to the final bonding of the last layers of the wound on the wound roll web material can be significantly increased and a web width as possible final bonding without any winding technology disadvantages are generated.

In order to produce a sufficient adhesion between the last layers of the material web wound onto the produced wound roll, the adhesive medium is described as at least one strip having a strip width in the range from 1 to 50 mm, preferably from 1 to 30 mm, in particular from 1 to 5 mm, applied to the material web. Moreover, a cut-out width required for this strip width does not yet produce any "punch through" and thus no core broke in the first layers of the material web wound onto the new winding core. The maximum permissible, yes harmless recess width depends in a manner known to those skilled in the material web type, the Core diameter and the winding roll diameter from.

The adhesive medium can be applied in strip form to the material web in different time ranges and durations and at different application locations. Thus, it is preferably applied to the material web at least during and / or in the region of the severance of the material web as at least one strip. If, for example, the adhesive medium is applied substantially the same time before the material web has been cut through, an end sheet bonding of the material web to the wound roll to be produced is produced over a plurality of layers. Moreover, by precise definition of the time ranges and durations, on the one hand, and of the application location, on the other hand, optimal end sheet bonding and reliable transfer of the material web to the new winding core can be achieved due to the temporary use of the adhesive medium.

In a further preferred embodiment, the position of the at least one recess attached to the new winding core is determined by means of a device in a first step prior to the application of the adhesive medium. In a second step, the adhesive medium is then applied to the material web as at least one strip in the region of the at least one identified cutout and attached to the new winding core. By this procedure, it is ensured that the spatial coordination between the application of the adhesive medium and the attached to the new hub recess is given continuously and thus any operational tolerances, manufacturing tolerances, such as an axial clearance in the new hub, and other conditions, such as different tolerances in the reel magazine, in the transport rails or in the transport levers, can not exert a negative influence on the process.

The position of the at least one recess attached to the new winding core is preferably determined by means of at least one optical, capacitive or inductive sensor, since these types of sensors have already proven their worth in similar applications in the area of a winding machine.

The corresponding sensor is of course connected to an evaluation unit, which in turn is connected to the control unit for the winding machine. The control unit for the winding machine can in turn optionally be connected to a higher-level system, such as a process control system for the machine for producing the fibrous web.

Depending on the realized winding concept, it is also possible that before the formation of the new winding nip between the new winding core and the carrier drum, the wound roll to be produced is moved away from the carrier drum upon dissolution of the winding nip and upon formation of a free draw in the material web. Thus, the new winding core along a larger peripheral region is brought to the carrier drum in forming the new winding nip. However, the potentially necessary use of an expensive air squeegee roller could be disadvantageous.

Furthermore, the material web is severed by means of the at least one separating device arranged in the region or after the application position of the adhesive medium, preferably a cross-cutting device, in particular a water-jet cross-cutting device. Such a separator generally provides good to very good release properties, such as separation speed, release quality, and the like. Depending on the number of separating devices, different separating contours can be realized: a dividing line across the width of the web, two dividing lines preferably crossing in the middle region of the material web and extending to the opposite web edge or two spaced apart from each other in the middle region of the material web and extending to the same web edge dividing lines.

The object of the invention is achieved in a winding machine of the type mentioned in the present invention that the at least one application device for the adhesive medium is provided such that it is the adhesive medium in the direction of the web before the new, between the new winding core and the carrier drum formed winding nip on the upper side and as at least one strip applied to the web, so that it passes through the new winding nip in a region in which the new winding core is provided with at least one radially arranged recess on the circumference, wherein the at least one Recess is provided such that the adhesive applied to the web adhesive medium passes through the new winding gap untouched.

This winding machine according to the invention is outstandingly suitable for carrying out the method according to the invention, so that ultimately the advantages of the invention already mentioned result. The term "strip" here defines only a maximum area or a shape of the applied adhesive medium; For example, the adhesive medium can also be applied as a "bead" known to the person skilled in the art.

In a first preferred embodiment, the new winding core has, according to the applied strips of adhesive medium, at least two recesses, preferably several and preferably uniformly distributed recesses, in particular symmetrically arranged in relation to the center of the material web. Thus, the process reliability with respect to the final bonding of the last layers of the wound on the wound roll web material can be significantly increased and a web width as possible final bonding without any winding technology disadvantages are generated.

And, depending on the stripe width of the respective stripe of adhesive medium, the at least one recess attached to the new winding core may have a recess width in the range of 1 to 50 mm, preferably 1 to 30 mm, especially 1 to 5 mm. Moreover, such a recess width does not yet produce any "crushing" and thus no core scrap in the first layers of the material web wound onto the new winding core. The maximum permissible, yes harmless recess width depends in a manner known to those skilled on the material web type, the winding core diameter and the winding roll diameter.

Furthermore, in a preferred embodiment, the at least one recess attached to the new winding core and having a recess base has a recess depth in the range from 0.1 to 10 mm, preferably from 0.1 to 7 mm, in particular from 0.1 to 5 mm , The recess base is preferably provided with a coating, in particular a silicone or Teflon coating. With such a coating a possible, but undesirable adhesion to the new hub is avoided. In general, the recess depth should be such that the local application of the adhesive medium finds enough "ground clearance". With regard to the cost of the new hub will be anxious to get along without a coating of the recess. However, a coated recess base significantly reduces the required recess depth. For example, the recess in the winding core can also be completely filled with the described coating, so that ultimately no recess is present.

In a further preferred embodiment, at least one device for determining the position of the at least one recess attached to the new winding core is preferably provided in the region of the new winding core forming a new winding gap with the carrying drum. The at least one application device for the adhesive medium is then preferably positionable by means of at least one device such that the adhesive medium is applied to the material web as at least one strip in the region of the at least one identified and attached to the new winding core recess. By this procedure, it is ensured that the spatial coordination between the application of the adhesive medium and the attached to the new hub core recess is given continuously and thus any operational tolerances, manufacturing tolerances and other conditions can not exert a negative influence on the winding machine.

The device for determining the position of the at least one of the new Reel-mounted recess preferably comprises at least one optical, capacitive or inductive sensor, since these types of sensors have already proven themselves in similar applications in the field of a winding machine. The corresponding sensor is of course connected to an evaluation unit, which in turn is connected to the control unit for the winding machine. The control unit for the winding machine can in turn optionally be connected to a higher-level system, such as a process control system for the machine for producing the fibrous web.

The object of the invention is achieved according to the invention in a winding core of the type mentioned that the base body is provided with at least one radially arranged recess having a recess width in the range of 1 to 50 mm, preferably from 1 to 30 mm, in particular of 1 to 5 mm, and a recess depth in the range of 0.1 to 10 mm, preferably from 0.1 to 7 mm, in particular from 0.1 to 5 mm.

This winding core according to the invention is outstandingly suitable for carrying out the method according to the invention, so that ultimately the advantages of the invention already mentioned result.

Furthermore, it can also be provided that the recess base is provided with a coating, in particular a silicone or Teflon coating. With such a coating a possible, but undesirable adhesion to the new hub is avoided. For example, the recess in the winding core can also be completely filled with the described coating, so that ultimately no recess is present.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

Figur 1

eine schematisierte Seitenansicht einer bekannten Wickelmaschine während der Hauptwickelphase;

Figur 2

eine schematisierte Seitenansicht einer erfindungsgemäßen Wickelmaschine während der Endwickelphase;

Figur 3

einen Teil der in der Figur 2 dargestellten und erfindungsgemäßen Wickelmaschine in Richtung des Pfeils "Y" gesehen; und

Figur 4

eine schematisierte Detailansicht "Z" der in der Figur 3 dargestellten Ansicht der erfindungsgemäßen Wickelmaschine.

Show it

FIG. 1

a schematic side view of a known winding machine during the main winding phase;

FIG. 2

a schematic side view of a winding machine according to the invention during Endwickelphase;

FIG. 3

a part of in the FIG. 2 seen and inventive winding machine seen in the direction of the arrow "Y"; and

FIG. 4

a schematic detail view "Z" in the FIG. 3 shown view of the winding machine according to the invention.

In the FIG. 1 shown in a schematic side view winding machine 1 is used to wind a moving web 2, wherein the web 2 is successively wound on a plurality of hubs 4, 5 to bobbins 3. The material web 2 may in particular be a fibrous web, such as a paper, board or tissue web, which has a running direction R (arrow).

The winding machine 1 comprises a carrier drum 6, also referred to as a pressure drum or support roller, which is either rigidly mounted or displaceable along an imaginary straight line G shown in dashed lines by means of a pressing device, not shown (double arrow 7) and driven by a drive. The carrier drum 6 may have a closed, rubberized, grooved and / or drilled surface in a known manner. The various types of storage and movement for the carrier drum 6 are in particular in the German patent application DE 198 07 897 A1 disclosed; its content is hereby made the subject of this description.

The material web 2 is brought out either from a calender not shown here or from a likewise not shown here dryer section of a paper or board machine. It then wraps around first a roller 8, for example, a spreader roll or a paper guide roller, then runs on the lateral surface 9 of the carrier drum 6 and wraps around this lateral surface 9 by a certain angle ("peripheral region" 10) until it is detached by the wound roll to be formed. 3 In this case, the material web 2, as indicated by dashed lines, accrue in various geometries on the lateral surface 9 of the carrier drum 6. The detachment of the material web 2 from the carrier drum 6 and the transfer to the wound reel 3 to be formed takes place in the so-called winding nip 11, which forms during the main winding phase between the carrier drum 6 and the wound reel 3 to be formed. The winding roll 3 to be formed is guided by means of a lifting or pressing device ("secondary drive"), not shown, a movable transport device ("secondary carriage") in the direction indicated by the arrow 12 direction of movement. The lifting or pressing device can be, for example, at least one spindle drive, which comprises a threaded spindle driven by a motor unit, or at least one actuator in the form of a linear drive or hydraulic cylinder. The transport device serves to hold and guide the winding core 4 resting on the rails ("guide track") 13 of the winding roller 3 to be formed.

A device for regulating the resulting in the winding nip 11 line force L during the main winding phase is, for example, in the already mentioned German patent application DE 198 07 897 A1 disclosed. In the in FIG. 1 shown main winding phase, a new hub ("empty drum") 5 held by a holding device, not shown, already at a distance from the carrier drum 6 ("standby position").

The FIG. 2 shows a schematic side view of the winding machine 1 for winding the moving web 2 during Endwickelphase.

The new and preferably pre-accelerated winding core 5 has already been brought into the circumferential region 10 of the carrier drum 6 looped around by the material web 2 to the same with the formation of a new winding nip ("nip") 14. This Bring can be done for example by a so-called, but not shown primary arm. Furthermore, this Bring, for example, take place immediately before reaching a predetermined roll diameter D.

At the conclusion of this Endwickelphase an adhesive medium 16 between the layers of wound on the winding roll 3 material web 2 by means of a Application device 15 introduced. The application device 15 is arranged between the roller 8, for example a spreader roller or a paper guide roller, and the casserole line A, on which the material web 2 runs onto the lateral surface 9 of the carrier drum 6. But it can also, as shown in dashed lines, be arranged between the casserole A and the new winding nip 14.

Furthermore, the applicator 15 for the adhesive medium 16 is provided such that it the adhesive medium 16 in the direction R (arrow) of the web 2 before the new, formed between the new hub 5 and the carrier drum 2 winding nip 14 on the upper side and at least one strip 17 applies to the web 2. The adhesive medium 16 applied as at least one strip 17 then passes through the new winding gap 14 in a region in which the new winding core 5 has at least one recess 18 arranged radially on the circumference 19 (cf. FIGS. 3 and 4 ), wherein the at least one recess 18 is provided such that the applied to the material web 2 adhesive medium 16 passes through the new winding nip 14 untouched.

The adhesive medium 16 may also be in at least two, preferably more and preferably evenly distributed, in particular to the center of the web 2 (see. FIG. 3 ) symmetrically arranged strip 17 are applied to the web 2. In this case, the number of corresponding recesses 18 in the new winding core 5 is at least equal to or greater than the number of strips 17 applied. Furthermore, the adhesive medium 16 may comprise water, a preferably water-soluble liquid adhesive, in particular starch, a two-component adhesive or a UV adhesive, for example. Be radiation activatable adhesive. Of course, the adhesive medium may also be a preferably water-soluble adhesive tape, in particular a ready-made adhesive strip or a die-cut adhesive tape roundel. In the first case, the application device 15 then has at least one application nozzle 15.1, whereas in the second case it has at least one adhesive tape dispenser.

In the present embodiment of the winding machine 1 is still a optional pressure roller 20 for pressing the last layers of the wound on the produced winding roll 3 material web 2 is provided. The pressure roller 20 has an elastic coating and it can be controlled / regulated pressed against the winding roller 3.

During or after the completion of the application of the adhesive medium 16, the material web 2 is then severed by means of at least one separating device 21 which is merely indicated. The separating device 21 may comprise, for example, a cross-cutting device known to the person skilled in the art, in particular a water-jet cross-cutting device. Furthermore, the separating device 21 is arranged in front of, in the area or after the application device 15 for the adhesive medium 16.

After successfully transferring the material web 2 to the new hub 5 ("Anwickelphase") is then produced in a manner not shown the winding roller 3 with the aforementioned transport device from the carrier drum 6 at dissolution of the winding nip 11 and in the formation of a free train in the one Moving direction R (arrow) having material web 2 is displaced in the direction of movement 22 indicated by the arrow. The displacement is only terminated when the produced winding roll 3 has horizontally reached a desired end position E.

The new winding core 5 with the already wound thereon material web 2 ("Anwickelphase") is then placed by the holding device, not shown, while maintaining the new winding nip 14 on the rails 13 and transferred to the already described "main winding phase".

The FIG. 3 now shows a part of in the FIG. 2 seen and inventive winding machine 1 seen in the direction of the arrow "Y".

The material web 2 runs along its running direction R (arrow) over a roller 8, for example a spreader roller or a paper guide roller, before it then runs on the casserole line A onto the lateral surface 9 of the carrier drum 6. After that it wraps around the lateral surface 9 of the carrier drum 6 by a certain angle ("peripheral region" 10) and passes through the new formed between the carrier drum 6 and the new hub 5 and dashed winding gap 14. The detachment of the web 2 of the carrier drum 6 and the Conversion to the wound roll to be formed and not shown takes place in the so-called winding nip ("nip"), which forms during the "main winding phase" between the carrier drum 6 and the wound roll to be formed (see FIG. FIG. 1 ).

The new winding core 5 for winding the moving material web 2 comprises a main body 26, each having a mounted on its two end faces 27, 28 bearing pin 29, 30, and a web-contacted peripheral surface 31st

In the present embodiment, an application device 15 having three applicator nozzles 15.1 is provided, which applies the adhesive medium 16 to the material web 2 as three strips 17, which are only shown in sections. The adhesive medium 16 applied as three strips 17 then passes through the new winding gap 14 in a region in which the new winding core 5 is provided with three or more recesses 18 radially arranged on the circumference 19, the respective recess 18 being provided such that the applied as a corresponding strip 17 with a strip width B.17 on the web 2 adhesive medium 16 passes through the new winding nip 14 untouched.

The strips 17 on adhesive medium 16 and arranged on the new hub 5 recesses 18 are thus aligned with each other. In the present case, they are also arranged symmetrically to the center M of the web 2.

The separation device known to the person skilled in the art, for example a cross-cutting device, in particular a water-jet cross-cutting device, is shown in the drawing FIG. 3 not shown.

In the area of the new, with the carrier drum 6, a new winding nip 14 forming winding core 5 is a merely indicated means 23 for determining the position of the at least one attached to the new winding core 5 recess 18 is provided. Since a plurality of recesses 18 usually have mutually equal distances, the determination of the position of a recess 18, for example, the edge-most recess is sufficient. Of course, a separate means 23 for determining their position can be provided for each recess 18. The device 23 for determining the position of the at least one recess 18 attached to the new winding core 5 comprises at least one optical, capacitive or inductive and merely indicated sensor 24. The sensor 24 is of course connected to an evaluation unit in the device 23 (arrow illustration) in turn connected to the control unit for the winding machine. The control unit for the winding machine can in turn optionally be connected to a higher-level system, such as a process control system for the machine for producing the fibrous web.

Based on the determined positions of the recess 18, the applicator 15 for the adhesive medium 16 by means of only indicated means 25 can be positioned (double arrows) that the adhesive medium 16 as at least one strip 17 in the region of at least one determined and on the new hub 5 attached recess 18 is applied to the web 2.

The FIG. 4 shows a schematic detail view "Z" in the FIG. 3 It can be clearly seen that the new winding core 5 with the carrier drum 6 forms a new winding nip 14, through which the material web 2 is guided.

The only partially illustrated new winding core 5 for winding the moving material web 2 comprises a base body 26, each having a mounted on its two end faces 27, 28 bearing pin 29, 30, and a web-contacted peripheral surface 31 (see. FIG. 3 ).

The main body 26 is arranged with at least one radially on the circumference 19 Recess 18 provided a recess width B.18 in the range of 1 to 50 mm, preferably from 1 to 30 mm, in particular from 1 to 5 mm, and a recess depth T.18 in the range of 0.1 to 10 mm, preferably from 0.1 to 7 mm, in particular from 0.1 to 5 mm. The surfaces of the recess 18 can merge smoothly at their edges, for example by the attachment of curves or radii. Furthermore, the recess base 32 may be provided with a coating, in particular a silicone or Teflon coating.

Furthermore, the recess 18 is provided such that the applied to the web 2 as a strip 17 with a strip width B.17 and a strip height H.17 adhesive medium 16 passes through the new winding nip 14 untouched. The strip width B.17 is in a range from 1 to 50 mm, preferably from 1 to 30 mm, in particular from 1 to 5 mm. And arranged on the new hub 5 recesses 18 are usually arranged symmetrically to the center M of the web 2 (see. FIG. 3 ).

The in the FIGS. 1 to 4 Winding machine 1 shown is particularly suitable for carrying out the method according to the invention for transferring a running material web 2, in particular a fibrous web, to a new winding core 5, wherein the material web 2 preferably over a peripheral region 10 of a preferably displaceable and with a wound roll 6 to be produced a winding nip 11 carrying the carrier drum 6 is guided and then wound on a winding core 4 to be produced winding roll 6, wherein the new winding core 5 preferably immediately before reaching a predetermined roll diameter D in the looped by the web 2 peripheral region 10 of the carrier drum 6 to samebige in training a new Winding nips 14 is brought and wherein the web 2 after formation of the new winding nip 14 between the new hub 5 and the carrier drum 6 is severed by means of at least one separator 21 and an adhesive medium 16th is introduced between the layers of the material web 2 by means of at least one applicator 15.

In this case, the adhesive medium 16 is applied in the direction R of the web 2 before the new, formed between the new winding core 5 and the carrier drum 6 winding nip 14 on the upper side and at least one strip 17 on the web 2 by means of at least one applicator 15 such that it passes through the new winding nip 14 in a region in which the new winding core 5 is provided with at least one radially arranged recess 18 on the circumference 19, wherein the at least one recess 18 is provided such that the adhesive medium applied to the web 2 16th the new winding nip 14 passes through untouched.

In summary, it can be stated that a method and a winding machine of the aforementioned types are further developed by the invention in such a way that the aforementioned disadvantages of the prior art are markedly reduced, preferably even completely avoided. Furthermore, the outer layer Committee is reduced and achieved a good quality construction of the winding roll. In addition, the best conditions for optimal runnability and favorable investment and process costs are given.

LIST OF REFERENCE NUMBERS

1

winder

2

web

3

reel

4

winding core

5

winding core

6

carrying drum

7

double arrow

8th

roller

9

lateral surface

10

peripheral region

11

Winding nip

12

arrow

13

Rail ("guideway")

14

New winding gap ("nip")

15

applicator

15.1

applicator

16

Adhesive medium

17

strip

18

recess

19

scope

20

pressure roller

21

separator

22

Direction of movement (arrow)

23

Establishment (position determination)

24

sensor

25

Device (positioning)

26

body

27

front

28

front

29

pivot

30

pivot

31

peripheral surface

32

recess base

A

casserole line

B.17

strip width

B.18

recess width

D

Reel diameter

e

end position

G

Just

H.17

strip height

L

line force

M

Middle (material web)

R

Running direction (arrow)

T.18

recess depth

Y

arrow

Z

detailed view

Claims (15)

1. Method for transferring a moving material web (2), in particular a fibrous web, to a new core (5), the material web (2) preferably being guided over a circumferential region (10) of a carrier drum (6) that can preferably be displaced and forms a winding nip (11) with a wound roll (3) to be produced, and subsequently being wound onto a core (4) of the wound roll (3) to be produced, the new core (5) being moved against the carrier drum (6) in the circumferential region (10) of the latter around which the material web (2) wraps, forming a new winding nip (14), preferably immediately before a predetermined wound roll diameter (D) is reached, and, following the formation of the new winding nip (14) between the new core (5) and the carrier drum (6), the material web (2) being severed by means of at least one severing device (21) and an adhesive medium (16) being introduced between the layers of the material web (2) by means of at least one application device (15),
   characterized in that
   in the running direction (R) of the material web (2), the adhesive medium (16) is applied to the top side before the new winding nip (14) formed between the new core (5) and the carrier drum (6) and is applied to the material web (2) by means of the at least one application device (15) as at least one strip (17) in such a way that it runs through the new winding nip (14) in a region in which the new core (5) is provided with at least one recess (18) arranged radially on the circumference (19), the at least one recess (18) being provided in such a way that the adhesive medium (16) applied to the material web (2) runs through the new winding nip (14) untouched.
2. Method according to Claim 1,
   characterized in that
   the adhesive medium (16) is applied to the material web (2) in at least two strips (17), preferably a plurality of strips (17), preferably equally distributed, in particular arranged symmetrically with respect to the centre (M) of the material web (2).
3. Method according to Claim 1 or 2,
   characterized in that
   the adhesive medium (16) is applied to the material web (2) as at least one strip (17) having a strip width (B.17) in the range from 2 to 50 mm, preferably from 5 to 40 mm, in particular from 10 to 25 mm.
4. Method according to one of the preceding claims,
   characterized in that
   the adhesive medium (16) is applied to the material web (2) as at least one strip (17) at least during and/or in the area of the severing of the material web (2).
5. Method according to one of the preceding claims,
   characterized
   in that before the application of the adhesive medium (16), the position of the at least one recess (18) made in the new core (5) is determined by means of a device (23), and
   in that the adhesive medium (16) is applied to the material web (2) as at least one strip (17) in the region of the at least one recess (18) determined and made in the new core (5).
6. Method according to Claim 5,
   characterized in that
   the position of the at least one recess (18) made in the new core (5) is determined by means of at least one optical, capacitive or inductive sensor (24).
7. Method according to one of the preceding claims,
   characterized in that
   before the formation of the new winding nip (14) between the new core (5) and the carrier drum (6), the wound roll (3) to be produced is moved away from the carrier drum (6), opening the winding nip (11) and forming a free draw in the material web (2).
8. Method according to one of the preceding claims,
   characterized in that
   the material web (2) is severed by means of the at least one severing device (21), preferably a transverse severing device, in particular a water jet transverse severing device, arranged before, in the region of or after the application position of the adhesive medium (16).
9. Winding machine (1) for transferring a moving material web (2), in particular a fibrous web, to a new core (5), where the material web (2) is preferably guided over a circumferential region (10) of a carrier drum (6) that can preferably be displaced and forms a winding nip (11) with a wound roll (3) to be produced, and can subsequently be wound onto a core (4) of the wound roll (3) to be produced, where the new core (5) can be moved against the carrier drum (6) in the circumferential region (10) of the latter around which the material web (2) wraps, forming a new winding nip (14), preferably immediately before a predetermined wound roll diameter (D) is reached, and, following the formation of the new winding nip (14) between the new core (5) and the carrier drum (6), the material web (2) can be severed by means of at least one severing device (21) and an adhesive medium (16) can be introduced between the layers of the material web (2) by means of at least one application device (15), in particular for carrying out a method according to at least one of Claims 1 to 8,
   characterized in that
   the at least one application device (15) for the adhesive medium (16) is provided in such a way that, in the running direction (R) of the material web (2), it applies the adhesive medium (16) to the top side before the new winding nip (14) formed between the new core (5) and the carrier drum (6) and applies the said adhesive medium (16) to the material web (2) as at least one strip (17) in such a way that it runs through the new winding nip (14) in a region in which the new core (5) is provided with at least one recess (18) arranged radially on the circumference (19), the at least one recess (18) being provided in such a way that the adhesive medium (16) applied to the material web (2) runs through the new winding nip (14) untouched.
10. Winding machine (1) according to Claim 9,
    characterized in that
    the new core (5) has at least two recesses (18), preferably a plurality of recesses (18), preferably equally distributed, in particular arranged symmetrically with respect to the centre (M) of the material web (2).
11. Winding machine (1) according to Claim 9 or 10,
    characterized in that
    the at least one recess (18) made in the new core (5) has a recess width (B.18) in the range from 2 to 50 mm, preferably from 5 to 40 mm, in particular from 10 to 25 mm.
12. Winding machine (1) according to one of Claims 9 to 11,
    characterized in that
    the at least one recess (18) made in the new winding core (5) and having a recess base (32) has a recess depth (T.18) in the range from 0.1 to 10 mm, preferably from 0.1 to 7 mm, in particular from 0.1 to 5 mm, the recess base (32) preferably being provided with a coating, in particular a silicone or Teflon coating.
13. Winding machine (1) according to one of Claims 9 to 12,
    characterized in that
    at least one device (23) for determining the position of the at least one recess (18) made in the new core (5) is provided preferably in the region of the new core (5) forming a new winding nip (14) with the carrier drum (6), and
    in that the at least one application device (15) for the adhesive medium (16) can be positioned by means of at least one device (25) in such a way that the adhesive medium (16) is applied to the material web (2) as at least one strip (17) in the region of the at least one recess (18) determined and made in the new core (5).
14. Winding machine (1) according to Claim 13,
    characterized in that
    the device (23) for determining the position of the at least one recess (18) made in the new core (5) comprises at least one optical, capacitive or inductive sensor (24).
15. Core (5) for winding a moving material web (2), in particular a fibrous web, having a basic body (26) which has a bearing journal (29, 30) in each case fitted at its two ends (27, 28), and having a circumferential surface (31) touched by the web, for carrying out a method according to at least one of Claims 1 to 8,
    characterized in that
    the basic body (26) is provided with at least one recess (18) arranged radially on the circumference (19), which has a recess width (B.18) in the range from 2 to 50 mm, preferably from 5 to 40 mm, in particular from 10 to 25 mm, and a recess depth (T.18) in the range from 0.1 to 10 mm, preferably from 0.1 to 7 mm, in particular from 0.1 to 5 mm.

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