EP2250110A1

EP2250110A1 - Method for winding a continuous material web and winding machine for carrying out the method

Info

Publication number: EP2250110A1
Application number: EP09718274A
Authority: EP
Inventors: Walter Kaipf; Zygmunt Madrzak
Original assignee: Voith Patent GmbH
Current assignee: Voith Patent GmbH
Priority date: 2008-02-29
Filing date: 2009-02-26
Publication date: 2010-11-17
Also published as: CN102083723B; WO2009109503A1; DE102008000475A1; CN102083723A

Abstract

The invention relates to a method for winding a continuous material web (4), in particular a web of fibrous material, in which the material web (4) is wound consecutively onto a plurality of winding cores (10, 11) to form wound rolls (6), wherein the material web (4) is led over a support drum (2), wherein prior to beginning the transfer of the material web (4) the wound roll (6) to be formed is moved away from the support drum (2), forming an open draw, and wherein a new winding core (11) is brought to the support drum (2) so that the material web (4) is slung around said winding core at least in a peripheral area (13) thereof. The method according to the invention is characterized in that in the peripheral area (13) of the new winding core (11) wrapped by the material web (4), the material web (4) is separated by a separating device (14) that produces two separation lines (16.1, 16.2), wherein the two separation lines (16.1, 16.2) intersect in the area of the material web (4) and thereby form a new beginning (18) of the material web (4) and that at least in the area of the new beginning (18) of the material web (4) to be formed an adhesive medium (25) is applied between the material web (4) and the new winding core (11).

Description

Method for winding a moving material web and winding machine for carrying out the method

The invention relates to a method for winding a moving material web, in particular a fibrous web, in which the web is successively wound onto a plurality of winding cores to winding rollers, wherein the material web is preferably guided over a peripheral region of a preferably displaceable and forming a winding nip winding drum with the winding roll to be formed wherein, before the beginning of the transfer of the web, the winding roll to be formed is moved away from the carrier drum upon dissolution of the winding nip and during formation of a free train in the web and wherein a new winding core is brought to the carrier drum in forming a new winding nip such that he is wrapped at least in a peripheral region of the web.

Furthermore, the invention relates to a winding machine for winding a moving material web, in particular a fibrous web, in which the web is successively wound on several hubs winding rollers, wherein the material web preferably guided over a peripheral region of a preferably displaceable and with the wound roll forming a winding nip forming carrier drum wherein, prior to the beginning of the transfer of the material web, the winding roll to be formed is movable away from the carrier drum upon dissolution of the winding nip and during the formation of a free draw in the material web, and wherein a new winding core can be brought to the carrying drum when a new winding nip is formed, that it can be wrapped around the material web at least in a peripheral region.

Such Aufwickelverfahren and winding machines are used for example in the Used paper or board to wrap 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 reels, to winding reels. Also, they can serve to wrap an already wound wound roll.

It must be ensured that the new beginning of the material web resulting from the severing of the material web is fed to the new winding core, in order to subsequently form a new winding roll thereon.

Such a winding process is known for example from European Patent EP 1 035 054 B1. In this disclosure, moreover, it is provided that the material web is cut by means of two separating elements which can be moved generally transversely to the direction of web travel, by positioning the two separating elements in the region of the two web edges to form a strip at a distance from the respective web edge and then at least up to at least when the material web is running the middle of the track. In this case, the material web can be cut by means of the two separating elements on the new, still empty tambour. Also, a double-sided adhesive tape may be used to assist in winding the first layers to the new spool. However, no further comments are made on the use of the double-sided adhesive tape. For example, it is completely unclear where and how the double-sided adhesive tape is inserted.

A first disadvantage of this winding method is that the material web is not completely severed. The complete transection of the partially cut material web has to be done with an independent and uncontrolled tearing of the material web in its two edge regions. And this cracking may be associated with some difficulties, especially at higher grammages, ie higher basis weights, which have a detrimental effect on both process reliability and runnability of the take-up process. Another disadvantage of this Aufwickelverfahrens is the fact that the web can not be listed clean on the new, still empty tambour. The two Überführstreifen formed in the two edge areas experience any effects for a clean and orderly transfer to the new, still empty tambour. Thus, the Überführqualität and Überführsicherheit in many cases leaves much to be desired.

Furthermore, European Patent EP 0 997 417 B1 discloses a method for severing a running material web. In the method, the web is successively wound on a plurality of hubs and each started with the winding on a new hub when a winding roll formed on the previous old hub has reached a predetermined diameter. In this case, the new winding core between a winding roller and the old winding core to which the material web is fed via the winding roller, brought. The web is then severed in the area between a nip formed by the winding roll and the new winding core and the winding roll formed on the old winding core. In a preferred embodiment, the material web is severed in a region touching the new winding core. Also, after the material web has been severed, the new beginning of the material web can be applied to the new winding core, in particular by blowing, wetting, gluing and / or providing adhesive strips. However, there are no further comments made regarding the application of the new beginning of the web to the new hub. For example, it is completely unclear where and how a possible moistening is carried out. On this method is disadvantageous that its implementation is on the one hand quite complex, on the other hand requires a high degree of precision.

From the German patent DE 42 08 746 C2, a method for changing bobbins is also known, in which a continuously fed to a reeling drum material web is wound on a new spool, said new spool first in a waiting position on the rewinding drum - A - held and then brought into contact with the reeling drum. Thereafter, the material web is cut by means of two cutting devices in the central part along two parallel lines, the interfaces above a reeling drum, that lie in the web running direction in front of the reeling drum. Subsequently, cutting in triangular form by moving the cutting device in the direction of the respective web edges to separate the entire web. In this case, the narrow center strip of the material web is separated in the web running direction behind the contact point of the new reel and reeling drum. Also, an adhesive label with double-sided adhesive surfaces is fed to a point of contact on the spool which lies between the two lines so as to form a leader, the leader being secured to the new spool by the label, and the leading end of the leader through Label is lifted from the reeling drum to form a space so that it is easily severable in the direction of the label in front of the label by a high-pressure air jet blown against this space. It is also disadvantageous in this method that its implementation on the one hand is quite complex, on the other hand requires a high degree of precision.

Canadian Patent Application CA 2,227,113 A1 discloses a machine for continuously winding a moving material web, in which the material web is successively wound onto a plurality of winding cores to form winding rolls, the material web being guided over a peripheral region of a carrying drum forming a winding nip with the winding roll to be formed, and wherein a new winding core can be brought to the carrier drum in forming a new winding nip. At least one water jet cutting device is provided, by means of which the material web is severed after the formation of the new winding nip, wherein the at least one separation point lies in the web running direction in front of the winding nip and on the carrier drum. In addition, an application device for applying an adhesive fluid may be provided in the region of the beginning of the material web. Finally, the web is severed by moving the webbing cutting device web width. Finally, European Patent EP 0 907 600 B1 discloses a winding device for a material web to be wound up. There is provided a cutting means mounted for movement in a direction perpendicular to the machine for cutting the web of material thereby defining a tail. Further, a roll-up roller is mounted under the cutting means to thereby support the web. Also, a spool is mounted over and in engagement with the reel to rotate in the direction opposite to the direction of rotation of the reel, wherein the end widens between the reel and spool and onto the spool. Furthermore, a means for applying an adhesive to the web is provided to adhesively connect the web to the spool, wherein there is no open draw of the web between the cutting means and the spool. The cutting means includes a water knife which can move against the roll-up roll to cut the web to define an end, and the adhesive applicator applies the adhesive to the tail, thereby adhesively bonding the tail to the spool.

It is therefore an object of the invention to provide a method and a winding machine of the aforementioned types, which optimally Anwickeln the new

Initially the material web on the new hub in a simultaneous

Allow the committee to be reduced. Furthermore, should be as safe as possible

Be ensured separation process with minimal construction effort. In addition, the best conditions for optimal runnability and favorable investment and process costs should be given.

This object is achieved in a method of the type mentioned according to the invention that the material web is severed in the looped by the material web peripheral region of the new hub of a two separators comprehensive and thus two dividing lines generating separator, wherein the two separating elements of the separator generally transverse to the direction of movement of the material web are moved to the respective opposite edge of the material web and thus the two separating lines produced in the region of the material web, in particular in the region of the middle of the material web and thereby form a new beginning of the material web, and that at least in the region of the trainees new beginning of the web an adhesive medium directly or indirectly between the web and the new winding core is introduced so that the new and provided with the adhesive medium new beginning of the web is transferred to the new hub.

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

By severing the material web in the circumferential region of the new winding core which is looped around by it, ie after the new winding nip and before the free draw in the material web, the cutting process becomes more reliable overall, so that the risk of web breakage is reduced to almost zero. In addition, the web tension before the reel for cutting and transferring the material web does not have to be substantially, basically not lowered, since no weakening of the material web takes place before the new winding nip.

Due to the formation of the stated new beginning of the material web due to the cutting of the two dividing lines produced and the application of the adhesive medium, a clean and wrinkle-free separation of the material web is achieved, which is noticeable in particular in a significantly reduced core committee on the new hub.

Further, by separating on the new hub and creating a crossed separation in combination with the application of the adhesive medium, the web is not peeled off the new hub.

The immediate or indirect application of the adhesive medium ensures excellent adhesion of the new beginning of the material web to the new core from the beginning. The new beginning of the web is clean and wrinkle-free attached to the new hub and by the Use of an aid for transferring the new beginning of the material web onto the new winding core, such as, for example, an air stream, can be dispensed with altogether.

Also, the Tennvorrichtung is located below the material web, which ultimately allows a very good access to it, and this also during operation of the winding machine. In addition, the method according to the invention can also be carried out several times without problems, for example in the case of a temporary nonfunction of a separating element.

As a rule, a new and empty winding core is brought to the carrier drum in forming a new winding nip. In individual cases, however, it may also be that a new, but already wound winding core is brought to the carrier drum in order to wind it to the predetermined winding roll diameter. The winding of the winding core was done, for example, before a web break.

Furthermore, the adhesive medium is preferably applied at least during the separation of the material web, so that at least the new beginning of the material web to be formed is reliably provided with the adhesive medium.

The adhesive medium generally results in an adhesion comprising adhesive forces at the contact surfaces of two different or the same substances by molecular forces. 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.

In a first preferred embodiment, the adhesive medium is already before the formation of the new beginning of the material web between the Material web and the new hub introduced, so that the new beginning from the beginning to adhere to the new hub.

The two separating elements for severing the material web can be arranged on points which are essentially symmetrical in the running direction of the material web

Material web be recognized. Also, they can be in the direction of the

Material web spaced or substantially the same points of

Material web be recognized. This results in different separation contours that allow an individual adaptation to possibly different process needs.

Furthermore, the two separating elements can be moved relative to the material web during the severing of the material web in a plane approximately parallel to the material web, whereby the material web is ideally completely severed. In addition, the speed of the material web does not have to be reduced during its severing, and the two separating elements are preferably moved at a speed in the range from 2 to 20 m / s, preferably from 4 to 15 m / s, in particular from 6 to 12 m / s , Thus, an undefined tearing of the material web is prevented, so that the leading edge of the new beginning of the material web always has the same, specifiable shape and thus can be brought in a defined manner to the new hub.

Moreover, the two separating elements can each be moved by means of an electric motor, pneumatically and / or hydraulically operated drive device. Such a drive device satisfies one hand in sufficient

On the other hand, it is characterized by relatively low acquisition and operating costs at a low level

Maintenance out. However, in a further embodiment, the two separating elements can also be moved synchronized by only one drive device, for example by means of a chain, a belt or a belt

Bands. The synchronization can be done mechanically or electrically. With regard to a simple and yet reliable construction, the two separating elements are preferably moved in each case by means of a linear drive unit generally transversely to the running direction of the material web. Such a linear drive unit has already proven itself in similar applications and it has a reliable, yet sufficiently high dynamics.

Furthermore, it is provided with regard to a sufficient and thus reliable production of the new beginning of the material web, that as separating elements preferably non-contact and a high energy density having separating elements, such as in particular water jet or laser beam separating elements are used. Such techniques have already proven themselves in similar applications, especially with regard to the least possible mechanical engineering effort and the reliability or runnability.

Depending on the design of the winding machine, the axis of rotation of the new winding core during the severing of the material web may be substantially in or above a horizontal plane containing the axis of rotation of the carrier drum. In this case, the circumferential region of the new winding core wrapped around by the material web preferably has a wrap angle in the range of 5 to 90 °, preferably 15 to 80 °, in particular 30 to 75 °. These angular ranges sufficiently support the adhesion of the material web to the new winding core.

With regard to the application or incorporation of the adhesive medium, there are several advantageous and thus preferred options: The adhesive medium can be applied on the material web in the direction of travel of the material web in front of the new winding nip, in particular in the circumferential region of the carrier drum which is wrapped by the material web. But it can also be applied to the surface of the new, forming with the carrier drum the new winding nip winding core or introduced into the new, formed by the carrier drum and the new winding core winding nip. In all cases the adhesive medium is preferably applied or incorporated with at least one commissioned work.

In another advantageous and thus preferred way, the adhesive medium is on the underside of the material web preferably after their

Sequence of the new hub is applied so that it through the

Material web penetrates and wets the surface of the new hub at least partially. Here, the adhesive medium is preferably applied with at least one lower side of the web arranged high-pressure commissioned work.

In order for a sufficient adhesion between the new beginning of the web and the new hub is given, the adhesive medium preferably has an effective range with a effective width in the range of 5 to 150 mm, preferably from 10 to 100 mm, in particular from 15 to 30 mm ,

The object of the invention is achieved according to the invention in a winding machine of the type mentioned that a separating device for dividing the material web is provided in the circumferential region of the new winding core which is wrapped around the material web, the two separating elements of the separating device being generally provided transverse to the running direction of the material web to the respective opposite edge of the material web are movable and thus cut the two dividing lines in the region of the center of the material web and thereby form a new beginning of the material web, and that at least one commissioned work is provided, which at least during the separation of the web at least in the region of the trainees new beginning of the web introduces an adhesive medium directly or indirectly between the web and the new hub.

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

During the severing of the material web, the two separating elements are preferably movable relative to the material web in a plane approximately parallel to the material web, as a result of which the material web is ideally completely severed. In addition, the speed of the material web does not have to be reduced when it is cut through the material web, and the two separating elements are preferably at a speed in the range from 2 to 20 m / s, preferably from 4 to 15 m / s, in particular from 6 to 12 m / s , movable. Thus, an undefined tearing of the material web is prevented, so that the leading edge of the new beginning of the material web always has the same, specifiable shape and thus can be brought in a defined manner to the new hub.

Furthermore, in an advantageous embodiment, electric motor, pneumatic and / or hydraulically operated drive devices are provided for moving the two separating elements. On the one hand, such a drive device sufficiently fulfills the operating requirements placed on it, on the other hand, it is characterized by relatively low acquisition and operating costs with low maintenance costs.

With regard to a construction which is as simple as possible and yet reliable in terms of process, the two separating elements are preferably movable in each case generally transversely to the running direction of the material web by means of a linear drive unit. Such a linear drive unit has already proven itself in similar applications and it has a reliable, yet sufficiently high dynamics.

Furthermore, it is provided with regard to a sufficient and thus reliable production of the new beginning of the material web, that the two separating elements preferably comprise contactless and high energy density having separating elements such as in particular water jet or laser beam separating elements. Such techniques already exist in similar applications well proven, especially with regard to a minimum of mechanical engineering effort and the reliability or runnability.

With regard to the application or incorporation of the adhesive medium, there are several advantageous and thus preferred options: the individual applicator can be arranged such that the adhesive medium is applied to the material web in the running direction of the material web in front of the new winding nip or on the surface of the new, the winding drum forming the new winding nip is applied with the carrier drum or introduced into the new winding nip formed by the carrier drum and the new winding core. In an application of the adhesive medium in the direction of the web in front of the new winding nip, the individual commissioned work can also be arranged so that the adhesive medium is applied to the material web in the circumferential region of the carrier drum looped around by the material web.

In another advantageous and therefore preferred possibility, a high-pressure coater is arranged such that the adhesive medium is applied to the lower side of the material web preferably after its expiration of the new hub so that it penetrates through the web and at least the surface of the new hub partially wetted.

In order for a sufficient adhesion between the new beginning of the web and the new hub is given, the applicator or the high-pressure applicator preferably has a preferably adjustable application width, so that the adhesive medium has an effective range with a effective width in the range of 5 to 150 mm , preferably from 10 to 100 mm, in particular from 15 to 30 mm, forms.

It is understood that the features of the invention mentioned above and those yet to be explained are not shown in the particulars indicated Combination, but also in other combinations and in isolation, without departing from the scope of the invention.

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

FIG. 1 shows a schematic side view of a winding machine during the main winding phase;

Figure 2 is a schematic side view of a winding machine during Endwickelphase; Figure 3 is a schematic detail view "Z" of the winding machine shown in Figure 2 during the Endwickelphase Figure 4 shows a part of the winding machine shown in Figure 3 in

5 shows a further schematic and partial side view of a

Winding machine during the final winding phase; and FIG. 6 shows a schematic illustration of an exemplary embodiment of a separating process in which the material web is conveyed by means of two

Separators in a peripheral area on the new

Winding core is cut.

The winding machine 1 shown in Figure 1 in a schematic side view is used to wind a moving material web 4, wherein the web 4 is successively wound on a plurality of winding cores 10, 11 to bobbins 6. The material web 4 may in particular be a fibrous web, such as a paper, board or tissue web, for example, and it has a running direction R (arrow).

The winding machine 1 comprises a so-called Anpresstrommel or support roller support drum 2, either mounted rigidly or along an imaginary, dashed horizontal straight line G by means of a non shown pressing device is displaceable (double arrow 3) and is driven by a drive. The carrier drum 2 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 2 are disclosed in particular in the German patent application DE 198 07 897 A1; its content is hereby made the subject of this description.

The material web 4 is led 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 a spreader roller, not shown, then runs in the direction of arrow on the lateral surface 5 of the carrier drum 2 and wraps around this lateral surface 5 by a certain angle ("peripheral region") until it is detached by the winding roller to be formed 6. The web 4 , as indicated by dashed lines, accumulating in various geometries on the lateral surface 5 of the carrier drum 2. The detachment of the web 4 from the carrier drum 2 and the transfer to the wound reel 6 to be formed takes place in the so-called winding nip 7, which during the main winding phase between the carrier drum 2 and the winding roller 6 to be formed is formed. The winding roll 6 to be formed is guided by means of a lifting or pressing device, not shown, a movable transport device in the direction indicated by the arrow 8 direction of movement. The lifting 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 10 resting on the rails ("guide track") 9 of the winding roller 6 to be formed.

A device for regulating the line force L arising in the winding nip 7 during the main winding phase is disclosed, for example, in the already cited German Offenlegungsschrift DE 198 07 897 A1. In the main winding phase shown in FIG. 1, a new winding core ("empty drum") 11 is moved away from a holding device, not shown, at a distance from the carrying drum 2 held ("ready position").

Below the winding roll 6 to be formed, that is to say in a lower region of the winding machine 1, an air squeezing device in the form of an air squeegee 12 is shown in dot-dashed form which is not in any operative relationship with the winding roll 6 to be formed during the illustrated main winding phase. It is rather in a waiting position. The Luftabquetschwalze 12 is applied only when reaching a desired layer thickness by means of at least one not shown moving means to be formed to the winding roller 6. The Luftabquetscheinrichtung can of course also be designed as a brush, a Foil, a roller arrangement or the like.

The squeegee roller 12 may be movable by generally known mechanisms both substantially linearly, preferably horizontally and / or vertically, as well as substantially along a contour of a circle segment.

2 shows a schematic side view of a winding machine 1 with the Luftabquetschwalze 12 during Endwickelphase. The spatial arrangement of the illustrated Luftabquetschwalze 12 has only exemplary character; It may also be arranged in an implied manner directly below the carrier drum 2 or below the winding roller 6 and immediately mutually the carrier drum 2.

During this Endwickelphase is to be formed winding roller 6 with the transport device already described by the carrier drum 2 upon dissolution of the winding nip 7 (see Figure 1) and in the formation of a free train in a direction R (arrow) having web 4 in the with the Arrow 8 marked movement direction 8 moves away. Time offset then the previously held at a distance from the carrier drum 2 new winding core 11 is placed by the holding device, not shown on the carrier drum 2 with the formation of a new winding gap 7.1 on the rails 9, whereby he wrapped at least in a peripheral region 13 of the web 4 becomes. The The axis of rotation of the new winding core 11 is thus substantially in a horizontal axis H containing the axis of rotation of the carrier drum 2. In an alternative embodiment, the axis of rotation of the new winding core 11 may also be above a horizontal plane H containing the axis of rotation of the carrier drum 2.

With the separation of the material web 4, not shown, then the Anwickelphase for the winding core 11, wherein the preferably full winding roller 6 then no longer wound and horizontally in an end position E ("Tambourwechselposition") is moved.

Prior to the opening of the winding nip 7 (see Figure 1) between the carrier drum 2 and the winding roller 6 to be formed, the air squeegee roller 12 is applied to the winding roller 6 to be formed. Immediately upon formation of an effective region W between the winding roll 6 to be formed and the air squeegee roller 12, the effective force F in the effective region W is regulated by a displacement of the air squeegee roller 12. As a result, a good, up to the last winding layers present winding result, that is to be formed winding roller 6 with a defined, uniform winding hardness over the entire winding time, achieved as a fine adjustment of the active force F in the effective range W between the wound roll to be formed 6 and Luftabquetschwalze 12 even during the final winding phase in which there is no winding gap between the carrier drum 2 and the winding roll 6 to be formed, is possible. The Luftabquetschwalze 12 is displaced while maintaining the effective force F in the effective range W to be formed to the winding roller 6. The displacement is only terminated when the winding roll 6 to be formed has horizontally reached its end position E ("spool change position").

FIG. 3 shows a schematic detail view "Z" of the winding machine 1 shown in FIG. 2 during the final winding phase.

The new winding gap 7.1 is formed between the carrier drum 2 and the patch on the rails 9 new hub 11 and the new Winding core 11 is looped in the peripheral region 13 of the material web 4. By definition, the circumferential region 13 on the new winding core 11 is the circumferential length 1.11 between the new winding gap 7.1 and the drain point P of the material web 4 of the new winding core 11. The peripheral region 13 on the new winding core 11 extends in the present embodiment over a wrap angle α of nearly 90 °; however, it may take on a greater or lesser value. However, the wrapping angle α should always have a value in the range from 5 to 90 °, preferably from 15 to 80 °, in particular from 30 to 75 °, from a process engineering point of view.

In the circumferential region 13 of the new winding core 11 looped around by the material web 4, a separating device 14 which generates two separating lines 15.1, 15.2 and thus two separating lines 16.1, 16.2 (see FIG. 4) is provided or can be brought to sever the material web 4.

The two separating elements 15.1; 15.2 of the separating device 14 are, as shown in Figure 4, generally transverse to the direction R (arrow) of the web 4 for each opposite edge 17.1, 17.2 of the web 4 movable. Thus, the dividing lines 16.1, 16.2 produced intersect in the region of the center M of the material web 4 and thereby form a new beginning 18 of the material web 4. Moreover, the two separating elements 15.1, 15.2 of the separating device 14 are movable relative to the material web 4 during the severing of the material web 4 in a plane approximately parallel to the material web 4 and there are electromotive, pneumatic and / or hydraulically operated drive devices 19 for moving the two separating elements 15.1, 15.2 provided. Thus, the two separating elements 15.1, 15.2, for example, in each case by means of a linear drive unit 20 generally transversely to the running direction R (arrow) of the material web 4 movable. The two separating elements 15.1, 15.2 comprise non-contact working and a high energy density having dividing elements such as in particular water jet or laser beam separating elements.

The separator 14 itself is attached to a carrier 21, which by means of an actuating element 22 can be pivoted between a separating position shown in solid lines in FIG. 3 and a waiting position (not shown). The pivotability of the carrier 21 and thus the separator 14 is indicated by a double arrow 23. The separator 14 may of course be arranged stationary in a further embodiment.

Further, a commissioned work 24 is provided, which at least during the separation of the material web 4 at least in the region of the trainees new beginning 18 of the material web 4 introduces an adhesive medium 25 directly or indirectly between the web 4 and the new hub 11. The applicator, for example, attached to a support, not shown

24 is arranged in the present embodiment such that the adhesive medium

25 is applied to the surface 26 of the new, with the carrier drum 2, the new winding nip 7.1 forming the winding core 11. The applicator 24 in this case has a preferably adjustable application width A, so that the adhesive medium 25 after passing through the new winding nip 7.1 an effective range B with a effective width C in the range of 5 to 150 mm, preferably from 10 to 100 mm, in particular 15 to 30 mm, forms (see Figure 6).

FIG. 4 shows a part of the winding machine 1 shown in FIG. 3 as seen in the direction of the arrow "Y".

The two separating elements 15.1; 15.2 of the separating device 14 are arranged in the direction of R (arrow) of the material web 4 at a distance from each other and are for cutting through the material web 4 each approximately centrally with respect to their transverse direction. In order to completely sever the material web 4, the two separating elements 15.1, 15.2 are pre-accelerated and, depending on their own speed, in the range from 2 to 20 m / s, preferably from 4 to 15 m / s, in particular from 6 to 12 m / s, as well as the speed of the material web 4 attached to the material web 4 such that the two resulting dividing lines 16.1, 16.2 intersect. This results in a tapered new beginning 18 of the material web. 4 The separating elements 15.1, 15.2 can also be moved in each case proceeding from the edges 17.1, 17.2 of the material web 4 perpendicular to the running direction R (arrow) of the material web 4 in the direction of the center M of the material web 4 in such a way that the dividing lines intersect. This would result in a V-like or dovetail cut new beginning of the web.

5 shows a further schematic and partial side view of a winding machine 1 during the final winding phase, wherein the existing separating device 14 (see FIGS. 3 and 4) acting with a peripheral length 1.11 in the circumferential region 13 is not shown in detail for the sake of clarity.

In the embodiment shown in FIG. 5, the applicator unit 24 is arranged in such a way that the adhesive medium 25 is applied to the surface 26 of the new winding core 11 forming the new winding gap 7.1 with the carrier drum 2. The possible for this arrangement of the commissioned work 24 area is indicated by the reference numeral "I".

In further and merely indicated embodiments, it is also possible that the respective applicator 24 is arranged for applying or introducing the adhesive medium 25 such that the adhesive medium 25 in the direction R (arrow) of the web 4 before the new winding gap 7.1 on the upper side is applied to the web 4. In this case, in particular, an arrangement is possible in which the adhesive medium 25 is applied on the material web 4 in the peripheral region 27 of the carrier drum 2 looped around by the material web 4, whereby the peripheral region 27 on the carrier drum 2 defines by definition the circumferential length 1.2 between the feed point Q of the web 4 on the carrier drum 2 and the new winding gap is 7.1. The area which is possible for these two arrangements of the individual applicator 24 is identified by the reference symbols "II" and "III". It is also possible that the respective discharge unit 24 is arranged such that the adhesive medium 25 in the new, formed by the carrier drum 2 and the new hub 11 Winding gap 7.1 is introduced. The possible range for this arrangement of the commissioned work 24 is indicated by the reference numeral "IV." Purely by way of example, a commissioned work 24 is shown or indicated by dashed lines for each region "I" to "IV".

Furthermore, a merely indicated high-pressure applicator 28 may be arranged such that the adhesive medium 25 is applied to the underside of the material web 4 after its expiry (expiry point P) of the new hub 11 such that it penetrates through the material web 4 and the Surface 26 of the new hub 4 at least partially wetted. The possible for this arrangement of the high-pressure applicator 28 area is denoted by the reference numeral "V", this area can also extend against the running direction R (arrow) of the material web before the drain point P.

6 shows a schematic representation of an exemplary embodiment of a separating process in which the material web 4 having a width D is cut by means of two separating elements 15.1, 15.2 in a peripheral region on the new winding core.

The two separating elements 15.1; 15.2 of the separator 14 are generally transversely to the direction R (arrow) of the web 4 for each opposite edge 17.1, 17.2 of the web 4 movable. Thus, the dividing lines 16.1, 16.2 produced intersect in the region of the center M of the material web 4 at an intersection 29 and thereby form a new beginning 18 of the material web 4. The two separating elements 15.1, 15.2 comprise non-contact working and a high energy density having dividing elements such as in particular water jet or laser beam separating elements.

The two separating elements 15.1, 15.2 for severing the material web 4 are preferably spaced in the running direction R (arrow) of the web 4 substantially symmetrical locations of the web 4 and / or in the direction of R (arrow) of the web 4 spaced or substantially the same places Material web 4 attached. In addition, both separating elements 15.1, 15.2 during the severing of the material web 4, preferably in a plane approximately parallel to the material web 4, it moves relative to the material web 4.

The merely indicated applicator 24 for the adhesive medium 25 has a preferably adjustable application width A, so that the adhesive medium 25 after passing through the new winding nip (see Figure 3) has an effective area B with a effective width C in the range of 5 to 150 mm , preferably from 10 to 100 mm, in particular from 15 to 30 mm, forms. It can also be seen that the adhesive medium 25 is already introduced between the material web and the new winding core prior to the formation of the new beginning 18 of the material web 4. If the new beginning 18 of the material web 4 is reliably transferred to the new winding core, then the application of the adhesive medium 18 can be terminated.

The winding machine 1 illustrated in FIGS. 1 to 6 is particularly suitable for carrying out the method according to the invention for winding up a moving material web 4, in which the material web 4 is successively wound onto a plurality of winding cores 10, 11 to form winding rolls 6, wherein the material web 4 is preferably wound over a peripheral region 13 of a preferably displaceable and to be formed with the winding roll 6 a winding nip 7 forming carrier drum 2 is guided, wherein prior to the beginning of the transfer of the web 4 to be formed winding roller 6 of the carrier drum 2 at resolution of the winding nip 7 and training a free train in the web 4 is moved away and wherein a new winding core 11 is brought to the carrier drum 2 in forming a new winding nip 7.1 such that it is wrapped at least in a peripheral region 13 of the web 4.

In this case, the material web 4 is severed in the looped by the web 4 peripheral region 13 of the new hub 11 of a two separating elements 15.1, 15.2 comprehensive and thus two dividing lines 16.1, 16.2 generating separator 14, wherein the two separating elements 15.1, 15.2 of the separator 14 generally transversely to the running direction R (arrow) of the material web 4 to the respective opposite edge 17.1, 17.2 of the material web 4 are moved and thus the two dividing lines 16.1, 16.2 cut in the region of the material web 4, in particular in the region of the center M of the material web 4 and thereby a new beginning 18 of the web 4 training. Further, at least in the region of the trainees new beginning 18 of the web 4, an adhesive medium 25 is introduced directly or indirectly between the web 4 and the new hub 11 so that the new and provided with the adhesive medium 25 new beginning 28 of the web 4 on the new winding core 11 is transferred.

In summary, it can be stated that the invention provides a method and a winding machine of the abovementioned types which enable optimum winding of the new beginning of the material web on the new winding core with a simultaneous reduction of rejects. Furthermore, the safest possible separation process is guaranteed with minimal construction effort and also given the best conditions for optimal runnability and favorable investment and process costs.

LIST OF REFERENCE NUMBERS

1 winding machine

2 carrier drum

3 double arrow

4 material web

5 lateral surface

6 winding roll

7 winding nip

7.1 New winding nip

8 arrow

9 rail

10 winding core

11 New hub

12 air squeegee

13 peripheral area

14 separating device

15.1 separating element

15.2 separating element

16.1 dividing line

16.2 Dividing line

17.1 edge

17.2 edge

18 New beginning

19 drive device

20 linear drive unit

21 carriers

22 actuator

23 double-headed arrow

24 commissioned work

25 Adhesive medium

26 surface

27 peripheral area 28 high-pressure commissioned work

29 intersection

A order width

B effective range

C effective width

D width

E end position

F effect

G Horizontal line

H Horizontal plane

I range

Il area

III area

IV area

V area

L lines force

1.2 circumferential length

1.11 circumferential length

M middle

P expiry point

Q casserole

R direction (arrow)

W effective range

Y arrow

Z detailed view

α wrap angle

Claims

Voith Patent GmbH file: HPR13948 WO 89510 Heidenheim "EcoChange gluing" process for winding up a running material web and winding machine for carrying out the process patent claims

1. A method for winding a running material web (4), in particular a fibrous web, in which the material web (4) is successively wound onto several winding cores (10, 11) to form winding rolls (6), the material web (4) preferably over a circumferential area (27) is guided by a preferably displaceable support drum (2) which forms a winding gap (7) with the winding roll (6) to be formed, the winding roll (6) to be formed being removed from the support drum ( 2) is moved away when the winding gap (7) is closed and a free pull is formed in the material web (4), and a new winding core (11) is brought to the support drum (2) when a new winding gap (7.1) is formed in such a way, in that it is wrapped around the material web (4) at least in a peripheral region (13), characterized in that the material web (4) is wrapped around by the material web (4).

Circumferential area (13) of the new winding core (11) is cut through by a separating device (14) comprising two separating elements (15.1, 15.2) and thus generating two separating lines (16.1, 16.2), the two separating elements (15.1, 15.2) of the separating device (14 ) generally transverse to the running direction (R) of the material web (4) to the opposite edge

(17.1, 17.2) of the material web (4) are moved and thus the two created dividing lines (16.1, 16.2) intersect in the area of the material web (4), in particular in the area of the middle (M) of the material web (4) and thereby form a new beginning (18) of the material web (4), and that at least in the area of the new beginning (18) to be formed the material web (4), an adhesive medium (25) is introduced directly or indirectly between the material web (4) and the new winding core (11), so that the new beginning (18) of the material web (18) provided with the adhesive medium (25) 4) is transferred to the new winding core (11).

2. The method according to claim 1, characterized in that the adhesive medium (25) is introduced between the material web (4) and the new winding core (11) before the new beginning (18) of the material web (4) is formed.

3. The method according to claim 1 or 2, characterized in that the two separating elements (15.1, 15.2) for severing the

Material web (4) is placed on points of the material web (4) that are essentially symmetrical in the running direction (R) of the material web (4).

4. The method according to any one of the preceding claims, characterized in that the two separating elements (15.1, 15.2) for cutting the material web (4) at spaced apart or essentially the same locations on the material web (4) in the running direction (R) of the material web (4) be set.

5. The method according to any one of the preceding claims, characterized in that the two separating elements (15.1, 15.2) are moved relative to the material web (4) in a plane approximately parallel to the material web (4) during the cutting of the material web (4).

6. Method according to one of the preceding claims, characterized in that the two separating elements (15.1, 15.2) are each moved by means of an electric motor, pneumatic and / or hydraulically operated drive device (19).

7. The method according to any one of the preceding claims, characterized in that the two separating elements (15.1, 15.2) are each moved generally transversely to the running direction (R) of the material web (4) by means of a linear drive unit (20).

8. The method according to any one of the preceding claims, characterized in that separating elements (15.1, 15.2) which work without contact and have a high energy density, such as in particular water jet or laser beam separating elements, are used as separating elements (15.1, 15.2).

9. The method according to any one of the preceding claims, characterized in that during the cutting of the material web (4), the axis of rotation of the new winding core (11) lies essentially in a horizontal plane (H) containing the axis of rotation of the support drum (2).

10. The method according to one of claims 1 to 8, characterized in that during the cutting of the material web (4), the axis of rotation of the new winding core (11) lies above a horizontal plane (H) containing the axis of rotation of the support drum (2).

11. The method according to any one of the preceding claims, characterized in that the circumferential region (13) wrapped by the material web (4) on the new winding core (11) has a wrap angle (α) in the range of 5 to 90°, preferably from 15 to 80°, in particular from 30 to 75°.

12. The method according to any one of the preceding claims, characterized in that the adhesive medium (25) is applied to the top of the material web (4) in the running direction (R) of the material web (4) in front of the new winding gap (7.1).

13. The method according to claim 12, characterized in that the adhesive medium (25) is applied to the top of the material web (4) in the peripheral region (27) of the support drum (2) wrapped around by the material web (4).

14. The method according to any one of claims 1 to 11, characterized in that the adhesive medium (25) is applied to the surface (26) of the new, with the

The winding core (11) forming the new winding gap (7.1) is applied to the support drum (2).

15. The method according to any one of claims 1 to 11, characterized in that the adhesive medium (25) is introduced into the new winding gap (7.1) formed by the support drum (2) and the new winding core (11).

16. The method according to any one of claims 12 to 15, characterized in that the adhesive medium (25) is applied or introduced with at least one applicator (24).

17. The method according to any one of claims 1 to 11, characterized in that the adhesive medium (25) is applied to the underside of the material web (4). preferably after the expiry of the new winding core (11) is applied in such a way that it penetrates through the material web (4) and wets the surface (26) of the new winding core (11) at least in some areas.

18. The method according to claim 17, characterized in that the adhesive medium (25) is applied with at least one high-pressure applicator (28) arranged on the underside of the material web (4).

19. The method according to any one of the preceding claims, characterized in that the adhesive medium (25) has an effective area (B) with an effective width (C) in the range from 5 to 150 mm, preferably from 10 to 100 mm, in particular from 15 to 30 mm, forms.

20. Winding machine (1) for winding a running material web (4), in particular a fibrous web, in which the material web (4) is successively wound onto several winding cores (10, 11) to form winding rolls (6), the material web (4) preferably over a circumferential region (27) of a preferably displaceable support drum (2) which forms a winding gap (7) with the winding roll (6) to be formed, the winding roll (6) to be formed being removed before the material web (4) begins to be transferred the support drum (2) when the

Winding gap (7) and can be moved away when a free pull is formed in the material web (4), and a new winding core (11) can be brought to the support drum (2) when a new winding gap (7.1) is formed in such a way that it is at least in one Circumferential area (13) can be wrapped around by the material web (4), in particular for carrying out the method according to one of claims 1 to 19, characterized in that one comprising two separating elements (15.1, 15.2) and thus two Separating device (14) generating dividing lines (16.1, 16.2) is provided for severing the material web (4) in the circumferential region (13) of the new winding core (11) wrapped around by the material web (4), the two separating elements (15.1, 15.2). Separating device (14) generally transverse to the running direction (R).

Material web (4) can be moved to the opposite edge (17.1, 17.2) of the material web (4) and thus the two dividing lines (16.1, 16.2) created intersect in the area of the center (M) of the material web (4) and thereby form one form a new beginning (18) of the material web (4), and that at least one applicator (24; 28) is provided, which is at least in the area of the new beginning (18) of the material web (4) to be formed, at least during the separation of the material web (4). ) an adhesive medium (25) is introduced directly or indirectly between the material web (4) and the new winding core (11).

21. Winding machine (1) according to claim 20, characterized in that the two separating elements (15.1, 15.2) can be moved relative to the material web (4) in a plane approximately parallel to the material web (4) during the cutting of the material web (4). .

22. Winding machine (1) according to claim 20 or 21, characterized in that electric motor, pneumatic and / or hydraulically operated drive devices (19) for moving the two separating elements (15.1,

15.2) are provided.

23. Winding machine (1) according to one of claims 20 to 22, characterized in that the two separating elements (15.1, 15.2) each by means of one

Linear drive unit (20) can generally be moved transversely to the running direction (R) of the material web (4).

24. Winding machine (1) according to one of claims 20 to 23, characterized in that the two separating elements (15.1, 15.2) comprise separating elements (15.1, 15.2) which work without contact and have a high energy density, such as in particular water jet or laser beam separating elements.

25. Winding machine (1) according to one of claims 20 to 24, characterized in that the applicator (24) is arranged such that the adhesive medium (25) in the running direction (R) of the material web (4) in front of the new one

Winding gap (7.1) is applied to the top of the material web (4).

26. Winding machine (1) according to claim 25, characterized in that the applicator (24) is arranged such that the adhesive

Medium (25) is applied to the top of the material web (4) in the peripheral area (27) of the support drum (2) wrapped around the material web (4).

27. Winding machine (1) according to one of claims 20 to 24, characterized in that the applicator (24) is arranged such that the adhesive medium (25) on the surface (26) of the new, with the support drum (2). new winding gap (7.1) forming winding core (11) is applied.

28. Winding machine (1) according to one of claims 20 to 24, characterized in that the applicator (24) is arranged such that the adhesive medium (25) in the new, from the support drum (2) and the new winding core (11 ) formed winding gap (7.1) is introduced.

29. Winding machine (1) according to one of claims 20 to 24, characterized in in that a high-pressure applicator (28) is arranged in such a way that the adhesive medium (25) is applied to the underside of the material web (4), preferably after it has run off from the new winding core (11), in such a way that it passes through the material web (4). penetrates and the surface (26) of the new winding core (11) is wetted at least in some areas.

30. Winding machine (1) according to one of claims 20 to 29, characterized in that the applicator unit (24) or the high-pressure applicator unit (28) has a preferably adjustable application width (A), so that the adhesive

Medium (25) forms an effective range (B) with an effective width (C) in the range from 5 to 150 mm, preferably from 10 to 100 mm, in particular from 15 to 30 mm.