EP1283185B1 - Method for winding up a running material web and winding machine for performing the method - Google Patents

Abstract

The winder machine (1) to wind a web (2) into a roll, especially of paper or cardboard, winds it in succession around a number of cores (3). The winding starts on a new core (3.2) when the current roll (4) has achieved a given diameter (D) around the previous core (3.1). At least one cutter (6) is operated to give at least one cut (S) preferably parallel to the web edge and in the direction (L) of web travel, to cut a leader strip, using a water jet or laser beam (6.1). To sever the web, at least one unit (8) is directly after the nip (N) between the winding roller surface (5.1) and the new core. An air stream (9), in a high energy burst, separates the leader strip (7) from the winding roller surface and severs it simultaneously. A blower (10), and especially a blower shoe (10.2) transfers the separated leader strip to the surface (3.21) of the new core.

Description

The invention relates to a method for winding a moving material web, in particular a paper or board web, in which the moving web is sequentially wound on a plurality of hubs, in particular reels, and is started in each case with the winding on a new core, if on a winding roll formed before a previous old winding core has reached a predetermined diameter, wherein the new and pre-accelerated winding core is preferably brought directly to a winding roller, in particular a carrier drum over the partially outer peripheral surface of the moving web is wound on the winding core before winding, to form a nip and wherein in the moving material web before or on the winding roller at least one cut by means of at least one cutting device to form at least one integrated transfer strip is attached, wherein the at least one cut preferably to the web edge d he running material web running parallel and is mounted in the running direction of the running web.

The invention further relates to a winding machine for winding a moving material web, in particular a paper or board web, in which the moving web is sequentially wound on a plurality of hubs, in particular reels, and is started in each case with the winding on a new hub when a formed on a previous old winding core winding roll has reached a predetermined diameter, wherein the new and pre-accelerated winding core preferably directly to a winding roller, in particular a carrier drum, over whose partial outer circumferential surface the moving material web is guided before winding onto the winding core, can be brought to form a nip and wherein in the moving material web before or on the winding roller at least one cut by means of at least one cutting device to form at least one integrated transfer strip is attachable, wherein the at least one cutting device is operable such that it attaches at least one cut preferably parallel to the web edge of the moving material web and in the web running direction of the moving material web.

Such winding methods and winding machines are used, for example, in the production of paper or board, in order to cut the finished and running paper or board web without interrupting the production process, that is to say without switching off the paper or board machine, to a plurality of winding cores, which are also referred to as reels. wind.

In this case, care must be taken to ensure that the new web start resulting from the severing of the running material web is fed to the new winding core in order to then form a new winding roll thereon.

European Patent Application EP 0 089 304 A1 (US Pat. No. 4,444,362) discloses a winding method and an associated winding machine for a moving material web, in particular a paper or board web, in which two intersecting lines are cut into a running material web by means of two movable cutting bodies which converge from a respective spaced starting point on opposite sides of the longitudinal center line of the moving material web from converging to a section and from the point of intersection to opposite edges of the moving material web. The tongue projection formed by this course of the two cutting bodies is directed by means of an air stream generated by a winding start device counter to the web running direction of the moving material web to a new rotating winding core.

A disadvantage of this Aufwickelverfahren that acting counter to the running direction of the web running web of air compresses the same, thereby creating an uncontrollable tangle of cut and running web and thus greatly reduced both the process reliability and the usability of the Aufwickelverfahrens. In the worst case, it can lead to a complete crack of the running material web in the winding machine, after which a time-consuming and costly transfer of the forming running web is required by a large part of the paper or board machine.

Furthermore, European Patent Application EP 0 543 788 A1 (US Pat. No. 5,360,179) discloses a winding method for a moving material web, in particular a paper or material web, in which a transfer strip is cut out of the running material web again by means of at least one cutting body a preferably acting from below blowing device is blown to a new hub and it is then cut web width.
This winding method disclosed has the disadvantage that, although the transfer strip is blown to the new hub for better transfer, this Heranblasung is too uncertain in terms of process reliability and efficiency, especially at today's higher web running speeds of the moving web, usually in the field from 1,200 m / min to 2,500 m / min.

From other publications other winding methods and winding machines for moving webs are known, but all of which are fraught with more or less major disadvantages.
For example, the two German Offenlegungsschriften DE 198 48 810 A1 and DE 199 44 704 A1 disclose Method for severing a running material web, in particular a paper or board web, wherein the moving web of material in the first disclosure between a gap formed by the winding roller and a new hub, and the wound roll formed on the old hub and in the second published patent application is separated before the winding roller. Both methods rely on a self-performance of the new web start on the new hub, the self-performance, however, can be very difficult and ongoing; Process reliability, in particular at the aforementioned web running speeds of the running material web, can under no circumstances be mentioned.

As the closest prior art, the method and the winding machine as disclosed in EP-1 035 056-A are considered.

It is therefore an object of the invention to provide a method and a winding machine of the type mentioned, the optimal winding first of at least one new transfer strip and then the time-delayed following and running web on the new core with optimal runnability and favorable investment and process costs enable.

This object is achieved in a method of the type mentioned in the present invention, that after passing through the at least one cut start by the nip formed by the winding roller and the new hub, the at least one trained integrated transfer strip by means of at least one of at least one separator briefly generated and directed high energy Air jet is detached from the outer peripheral surface of the winding roller and thereby simultaneously severed and then that at least one now detached transfer strip on the outer peripheral surface of the new hub by means of at least a first blowing device, in particular a blowing shoe, transferred and is created. In this case, the high-energy air jet is preferably directed perpendicular or approximately perpendicular to the running direction of the material web or at an angle greater than 45 °, preferably greater than 60 °, in particular greater than 75 °, counter to the running direction of the material web. This direction of the high-energy air jet ensures with great process reliability that the transfer strip is reliably detached and severed in the manner described.
By means of these method steps according to the invention, with optimal runnability and favorable investment and process costs, it is achieved that first the at least one new transfer strip and then the time-displaced following moving material web are wound onto the new winding core. By using at least one cutting device, at least one separating device with at least one directional high-energy air jet and at least one first blowing device, at least one transfer strip is produced in an optimum manner, which is subsequently listed on the new winding core, before the web of material is then webbed onto the new winding core is listed. All three cooperating process steps make it possible to optimize winding, in particular with regard to process reliability and reliability.

In a particular embodiment of the invention, the transfer strip is applied by means of at least one of the first blowing device downstream application device on the outer peripheral surface of the new hub. This results in the advantage of further improvement in runnability and process reliability.

In order to release the transfer strip with sufficient certainty from the outer peripheral surface of the winding roller, on the one hand the directed high energy air jet of the separator only about 0.05 s to 1 s, preferably only about 0.1 s to 0.5 s, effective, on the other hand the separator up to a distance of 1 mm to 10 mm, preferably from 2 mm to 5 mm, to the winding roller brought. According to the invention, compressed air with a pressure of approximately 5 bar to 15 bar, preferably 7 bar to 10 bar, is used to generate the directed high-energy air jet, the directed high-energy air jet having a flow velocity in the range of the speed of sound.

According to the invention, it is further provided that after the transfer and the application of the detached transfer strip on the outer peripheral surface of the new hub, the moving web is completely severed by means of the at least one cutting device which is moved relative to the running material web in a plane which is preferably approximately parallel to the running material web , As a result, the transfer strip is increased to the width of the web and transferred to the moving material web, which is then listed on the new winding core web width.

According to a preferred embodiment of the invention, the cutting device is preferably moved at least substantially perpendicular to the web running direction of the moving material web such that an oblique cutting line is generated. This cutting contour and the generated oblique edge of the transfer strip can be wound comparatively easily on the new winding core even at very high web speeds. This creates a conically wound web start.
Furthermore, the cutting device is moved during the cutting of the moving material web according to the invention with a preferably at least approximately constant speed of preferably about 10 m / s to 40 m / s, since this speed range completely meets the requirements and a constant speed can be realized without much effort.

• Die erste Möglichkeit weist zwei Schneideinrichtungen zum Schneiden und zum Durchtrennen der laufenden Materialbahn auf, die bevorzugt an in Bahnlaufrichtung der laufenden Materialbahn beabstandeten Stellen der laufenden Materialbahn jeweils zumindest näherungsweise mittig bezüglich der Querrichtung angesetzt werden, wobei jede der beiden Schneideinrichtungen zum Durchtrennen der laufenden Materialbahn erfindungsgemäß zu ihrem naheliegenden Bahnrand der laufenden Materialbahn bewegt wird.
• Die zweite Möglichkeit weist wiederum zwei Schneideinrichtungen zum Schneiden und Durchtrennen der laufenden Materialbahn auf, die bevorzugt im Bereich der beiden Bahnränder im Abstand von diesen angesetzt werden, wobei die beiden Schneideinrichtungen zum Durchtrennen der laufenden Materialbahn erfindungsgemäß zumindest bis zur Bahnmitte der laufenden Materialbahn bewegt werden.
• Und die dritte Möglichkeit weist lediglich eine Schneideinrichtung zum Schneiden und Durchtrennen der laufenden Materialbahn auf, die bevorzugt im Bereich eines der beiden Bahnränder im Abstand von diesem angesetzt wird, wobei die Schneideinrichtung zum Durchtrennen der laufenden Materialbahn erfindungsgemäß zu ihrem gegenüberliegenden Bahnrand der laufenden Materialbahn bewegt wird.
• Allen drei Möglichkeiten ist gemeinsam, dass jede für sich die laufende Materialbahn bei optimaler Runnability und günstigen Investitions- und Verfahrenskosten optimal durchtrennt.

With regard to the cutting locations and the number of cutting devices used, there are in principle three possibilities according to the invention:

• The first possibility comprises two cutting devices for cutting and severing the running material web, which are preferably attached at least approximately centrally with respect to the transverse direction at locations of the moving material web spaced apart in the web running direction of the moving material web, wherein each of the two cutting devices is according to the invention for severing the running material web is moved to its nearby web edge of the moving web.
• The second possibility in turn has two cutting devices for cutting and severing the running material web, which are preferably applied in the region of the two web edges at a distance from the latter, wherein the two cutting means for severing the moving material web according to the invention are moved at least to the middle of the web of moving web.
• And the third option has only one cutting device for cutting and severing the running material web, which is preferably applied in the region of one of the two web edges at a distance from this, wherein the cutting device for cutting the current material web according to the invention is moved to its opposite web edge of the moving web ,
• All three options have in common that each of them optimally cuts through the running material web with optimal runnability and favorable investment and process costs.

As an alternative to cutting through the running material web by means of at least one cutting device, the invention provides for the at least one cutting device to be put out of action during or after the transfer and the application of the detached transfer strip to the outer peripheral surface of the new winding core, and preferably at the same time the moving material web is acted upon by at least one second blowing device such that it preferably tears transversely to its direction of web travel to the at least one web edge. This separation process has been known for some time, for example in separation devices in the form of goosenecks (tear nozzle), and is characterized mainly by low investment and process costs, but the process reliability of the separation process occasionally leaves something to be desired.
To best achieve a rupture of the running material web transversely to its web running direction, the invention proposes that when operating the second blowing device compressed air at a pressure of about 5 bar to 15 bar, preferably 7 bar to 10 bar, is used and that the compressed air in Working area has a flow velocity in the range of the speed of sound.

In order to further increase the runnability and the process reliability, three possibilities for improvement are proposed according to the invention, namely that a nip is maintained between the almost formed winding roll and the winding roll until the cutting of the running material web is completed, or before the attachment of the at least a section in the running material web by means of the at least one cutting device to form at least one (integrated) transfer strip the almost formed winding roll is moved away from the winding roller to form a free train in the moving web or that after the attachment of at least one cut in the current Material web by means of at least one cutting device to form at least one (integrated) transfer strip and before the complete severing of the moving web, the almost formed winding roll of the winding roller un ter training a free train in the moving material web is moved away.

So that the separating device and the first blowing device do not interfere during normal winding construction on the winding roll, they are preferably brought to the waiting position of the transfer strip on the outer peripheral surface of the new winding core in a waiting position, which is preferably outside the effective range of the winding roller and the winding roll. Moreover, the first blowing device downstream application device is advantageously brought into a waiting position.

The object is achieved according to the invention in a winding machine of the type mentioned. that at least one separating device is preferably provided immediately after the nip, which separates the at least one formed integrated transfer strip from the outer peripheral surface of the winding roller by means of at least one short-term and directed high-energy air jet and thereby simultaneously cuts through and at least one first blowing device, in particular a blower shoe, is provided, which transfers the at least one now detached transfer strip on the outer peripheral surface of the new hub and applies. In this case, the high-energy air jet is preferably perpendicular or approximately perpendicular to the running direction of the material web or at an angle greater than 45 °, preferably greater than 60 °, in particular greater than 75 °, directed against the running direction of the material web. By means of this winding machine according to the invention, with optimum runnability and favorable investment and process costs, it is achieved that firstly the at least one new transfer strip and then the time-displaced following running material web can be wound onto the new winding core. By the use of at least one cutting device, at least one separating device with at least one directed high-energy air jet and at least one first Blowing device is optimally at least one transfer strip to produce, which is then performed on the new hub, before thereafter the running web to the new hub rail width is performed.

In a particular embodiment of the invention, at least one application device for applying the transfer strip to the outer peripheral surface of the new winding core is arranged downstream of the first blowing device. This results in the advantage of further improvement in runnability and process reliability.

According to the invention, the separating device comprises at least one separating nozzle preferably attached to the front side of a chamber, wherein the chamber can be acted upon by at least one pressure source via a pressure line and wherein the separating nozzle is designed so that it briefly a directed high-energy air jet ejects into the at least one section and the at least one trained integrated transfer strip detaches from the outer peripheral surface of the winding roller and thereby simultaneously severed.
The separation nozzle according to the invention is designed as a Laval nozzle, since a Laval nozzle generates a high effective speed with high dynamic energy at low pressures.
Furthermore, a control device is provided which limits the ejection of the high-energy air jet from the separation nozzle in time to approximately 0.05 s to 1 s, preferably to approximately 0.1 s to 0.5 s. The separation nozzle is advantageously brought to the winding roller to a distance in the range of 1 mm to 5 mm, preferably from 2 mm to 3 mm. Both the period and the distance is completely sufficient to jointly solve the transfer strip from the outer surface of the winding roller and cut.
If two cuts are produced in the running material web by at least one cutting device, then two separating nozzles, preferably at the chamber, are provided one each end face, attached, each act on a section with compressed air.

In a further embodiment of the invention is provided with respect to an optimal application of the transfer strip to the outer surface of the new hub, that the first blowing device comprises a blow body, preferably a blower, with a preferably curved outer contour and at least one unit of blowing nozzles, wherein the blow body of at least one Pressure source via a pressure line is acted upon with a pressure such that the blow body transfers the at least one now detached transfer strip on the outer peripheral surface of the new hub and applies.
In order to achieve the best possible long and good guidance of the transfer strip, the blow body in the manner of a cascade a plurality of successively arranged units, in particular rows, on blowing nozzles, wherein the distance between the individual units may vary.
The blowing nozzles are preferably designed as known Coanda nozzles with the known properties and advantages.
In order to achieve the said application as best as possible, the pressure source generates an air pressure of at least 5 bar, preferably from 7 bar to 10 bar.

It is further provided according to the invention that the application device is designed as a guided over at least two rolls of tape, in particular a screen, or at least one roller, wherein the applying means is at least partially adjusable to the outer peripheral surface of the new hub. This type of application device has already proven its worth in the past when used in the field of a winding machine.
According to the invention it is further proposed that the first blowing device and / or the applying device in the respective discharge region of the outer peripheral surface of the new winding core with blowing nozzles directed to the winding core is provided. These nozzles also optimally support the application of the transfer strip to the outer surface of the new hub.

So that the separating device and the first blowing device do not interfere during the normal winding structure on the winding roll, they are preferably after the application of the transfer strip on the outer peripheral surface of the new winding core in a waiting position, which is preferably outside the effective range of the winding roller and the winding roll, brought. Moreover, the first blower downstream feeding device can be brought into a waiting position.

From an economic point of view, a non-contact cutting element, such as, in particular, a water-jet or laser-beam cutting element or a blowing nozzle, is provided as the cutting device, the cutting device being arranged according to the invention in the web running direction in front of the winding roll or on the winding roll. Both cutting sites have been highly recommended in the past, both in terms of runnability and process reliability.

• Bei erster Möglichkeit sind zwei Schneideinrichtungen vorgesehen, die in beabstandeten Stellen jeweils zumindest näherungsweise mittig bezüglich der Querrichtung ansetzbar sind, wobei die zwei Schneideinrichtungen anschließend jeweils zu ihrem vorzugsweise naheliegenden Bahnrand verfahrbar sind.
• Bei zweiter Möglichkeit sind wiederum zwei Schneideinrichtungen vorgesehen, die im Bereich der beiden Bahnränder zur Bildung eines jeweiligen Überführstreifens im Abstand vom jeweiligen Bahnrand ansetzbar sind, wobei die beiden Schneideinrichtungen anschließend vorzugsweise jeweils zumindest bis zur Bahnmitte verfahrbar sind und wobei die beiden Schneideinrichtungen so verfahrbar sind, dass sich die durch die beiden Schneideinrichtungen erzeugten Schnittlinien im Bereich der Bahnmitte überschneiden.
• Und bei dritter Möglichkeit ist lediglich eine Schneideinrichtung vorgesehen, im Bereich eines Bahnrands zur Bildung eines Überführstreifens im Abstand von diesem ansetzbar ist, wobei die eine Schneideinrichtung anschließend bis zum vorzugsweise gegenüberliegenden Bahnrand verfahrbar ist.
• Allen drei Möglichkeiten ist gemeinsam, dass jede Schneideinrichtung für sich die laufende Materialbahn bei optimaler Runnability und günstigen Investitions- und Verfahrenskosten optimal durchtrennt.

With regard to the number of cutting devices used, according to the invention there are in principle three possibilities:

• In the first possibility, two cutting devices are provided, which can be attached at spaced locations at least approximately centrally with respect to the transverse direction, wherein the two cutting devices are subsequently movable in each case towards their preferably adjacent web edge.
• In the second possibility, in turn, two cutting devices are provided, which can be attached in the region of the two web edges to form a respective transfer strip at a distance from the respective web edge, wherein the two cutting devices then preferably each at least to the web center can be moved and wherein the two cutting devices are moved so that overlap the cut lines generated by the two cutting devices in the region of the web center.
• And in the third possibility, only a cutting device is provided, in the region of a web edge to form a transfer strip at a distance from this can be applied, wherein the one cutting device is then moved to the preferably opposite web edge.
• All three options have in common that each cutting device optimally cuts through the running material web with optimal runnability and favorable investment and process costs.

As an alternative to cutting through the running material web by means of at least one cutting device, it is provided according to the invention that at least one second blowing device with at least one blowing nozzle is arranged in the region of the chamber of the separating device and pressure can be applied by at least one pressure source via a pressure line in such a way that it momentarily releases a pressure High-energy air jet ejects and the running web, preferably transverse to its web running direction to the at least one web edge tears out.
The blowing nozzle according to the invention is designed as a Laval nozzle, since a Laval nozzle at low pressures produces a high effective speed with high dynamic energy.
Furthermore, a control device is provided which limits the ejection of the high-energy air jet from the separation nozzle in time to approximately 0.05 s to 1 s, preferably to approximately 0.1 s to 0.5 s. This period is quite sufficient to jointly solve the transfer strip from the outer surface of the winding roller and cut.
If two cuts are produced in the running material web by at least one cutting device, then the second blowing device has two blowing nozzles has, which are preferably directed to a respective web edge of the moving material web.

It is understood that the features of the invention to be explained above and below can be used not only in the respectively indicated combination but also in other combinations or alone, without leaving the scope of the invention.

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

Figur 1:

eine teilweise und schematisierte Seitenansicht der erfindungsgemäßen Wickelmaschine;

Figur 2:

eine schematisierte Seitenansicht einzelner Einrichtungen der erfindungsgemäßen Wickelmaschine;

Figur 3a und 3b:

zwei Draufsichten auf die Trenneinrichtung der erfindungsgemäßen Wickelmaschine;

Figur 3c:

eine als Lavaldüse ausgebildete Trenndüse; und

Figur 4a bis 4c:

schematisierte Darstellungen von drei erfindungsgemäßen Schnittverläufen.

Show it

FIG. 1:

a partial and schematic side view of the winding machine according to the invention;

FIG. 2:

a schematic side view of individual devices of the winding machine according to the invention;

FIGS. 3a and 3b:

two plan views of the separator of the winding machine according to the invention;

FIG. 3c:

a separating nozzle designed as a Laval nozzle; and

FIGS. 4a to 4c:

schematized representations of three cutting progressions according to the invention.

The winding machine described below is generally used for winding a moving material web. The winding machine can be arranged at the end of a machine for producing or finishing a moving material web, for example a paper or board web, in order to wind the finished moving web of material into a wound reel. But the winding machine can also be used to roll finished winder rolls. Purely exemplary It is assumed that this is a winding machine for winding a continuous paper or board web.

1 shows a partial and schematic side view of the winding machine 1 according to the invention, which serves for winding a moving material web 2, in particular a paper or board web, in which the running material web 2 successively on several hubs 3, in particular reel, wound and at is started in each case with the winding on a new hub 3.2 when a winding roll 4 formed on a previous old winding core 3.1 has reached a predetermined diameter D, the new and preferably by means of at least one center drive not shown vorbeschleunigte winding core 3.2 preferably directly to a stationary or preferably movably mounted winding roller 5, in particular a carrier drum, on whose partial outer peripheral surface 5.1 the running material web 2 is guided before winding on the winding core 3, to form a nip N can be brought and wherein in the running web 2 before o on the winding roller 5 at least one section S by means of at least one only schematically illustrated, the skilled person however known cutting device 6 to form at least one integrated transfer strip 7 can be attached
With regard to the further structural properties and procedural aspects of the winding machine 1 and the course of the winding process, reference is made to the PCT application WO 98/52858 (US Pat. No. 6,129,305).

According to the invention, provision is now made for the at least one cutting device 6 to be operable in such a way that it runs parallel to at least one cut S preferably to the unrecognizable web edge 2.1 of the moving material web 2 and in the web running direction L (arrow) of the moving material web 2, preferably at least one separating device 8 is provided immediately after the nip N, which by means of at least one short-term and directed high-energy air jet 9 (FIGS. 3a to 3c) forms the at least one integrated integrated transfer strip 7 from the outer peripheral surface 5.1 of the winding roller 5 and thereby severed simultaneously and that then at least one first blowing device 10 a blow body 10.1, in particular a blower 10.2, is provided, which transfers the at least one now detached transfer strip 7 on the outer peripheral surface of the new hub 3.2 3.2 and applies. The high energy air jet is preferably perpendicular or approximately perpendicular to the direction of travel of the web or at an angle greater than 45 °, preferably greater than 60 °, in particular greater than 75 °, directed against the direction of the web.

According to the invention, the separating device 8 comprises at least one separating nozzle 12 preferably attached to the front side of a chamber 11, wherein the chamber 11 can be acted upon by at least one pressure source, not shown, but known via a pressure line 13 and wherein the separating nozzle 12 is designed such that it briefly ejects a directed high-energy air jet 9 in the at least one section S and the at least one trained integrated transfer strip 7 detaches from the outer peripheral surface 5.1 of the winding roller 5 and thereby simultaneously severed. The separating nozzle 12 is preferably formed as a Laval nozzle 12.1 (Figure 3a) and it is a control device 14 together with the control line 14.1, which is connected to a higher-level control, not shown, in particular a machine control provided, the ejection of the directed high-energy air jet 9 from the dividing nozzle 12 limited in time to about 0.05 s to 1 s, preferably to about 0.1 s to 0.5 s.

Furthermore, the first blowing device 10 has a blowing body 10.1, preferably a blowing shoe 10.2, with a preferably curved outer contour and at least one unit of blowing nozzles 10.31, wherein the blowing body 10.1 of at least one, not shown, but known pressure source via an initially shown pressure line 15.1 so with a pressure can be acted upon, that the blow body 10.1 transfers the at least one now detached Überführstreifien 7 on the outer peripheral surface 3.21 of the new hub 3.2 and applies. The preferably curved outer contour of the blowing body 10.1 approaches the radius of the new winding core 3.2 overall, so that the transfer strip can be transferred in an ideal manner to the outer peripheral surface 3.1 of the new winding core 3.2.
In Figure 1, the blow body 10.1 in the manner of a cascade several consecutively arranged units, in particular rows of nozzles 10.31, 10.32, wherein the units are connected to separate pressure lines 15.1, 15.2. However, the units can also be connected to one another via at least one channel, so that in the minimum case a pressure line for supplying the blowing nozzles with compressed air is sufficient.
Furthermore, the nozzles 10.31, 10.32 are designed as known Coanda nozzles and the pressure source, not shown, generates an air pressure of at least 5 bar, preferably from 7 bar to 10 bar.

It is further provided that the separator 8 and the first blowing device 10 after the application of the transfer strip 7 on the outer peripheral surface of the new winding core 3 3.21 in a waiting position, which is preferably outside the effective range of the winding roller 5 and the winding roller 4, can be brought. Depending on the place of production of the transfer strip 7, the waiting position can be laterally on the paper or board machine (preferably lateral transfer strip 7) or preferably above the winding area of the moving material web 2 (preferably central transfer strip 7). The means for Bringing the two devices 8, 10 in the waiting position are well known to the skilled person and require no further execution.

For the cutting device 6 according to the invention either a non-contacting cutting element 6.1, such as in particular a water jet or laser beam cutting element or a blowing nozzle is provided, the cutting device 6 either in the web running direction L (arrow) in front of the winding roller 5, as shown in Figure 1, or on the winding roller 5 is arranged. The arrangement of the cutter 6 is dependent on various factors, such as winding parameters, process parameters, space within the winding machine 1 and the like, and can not be set to a specific location.

Furthermore, in the region of the chamber 11 of the separating device 8 at least a second blowing device 16 is arranged with at least one tuyere 16.1 and so acted upon by at least one pressure source, not shown, via a pressure line 16.2 with a pressure that it briefly emits a directed high-energy air jet 9 and the running web 2 preferably transverse to its web running direction L (arrow) to the at least one web edge 17 breaks. Since such a tuyere 16.1 is known in principle from separating devices in the form of goosenecks (tearing nozzle), a detailed description and description of the tuyere 16.1 is omitted. The tuyere 16.1 is preferably formed as a Laval nozzle 12.1. As already mentioned in the above first blowing device 10, also in the second blowing device 16, a control device, not shown, is provided, the ejection of the directed high-energy air jet 9 from the tuyere 16.1 in time to about 0.05 s to 1 s, preferably to about 0.1 s to 0.5 s, limited.

In the presence of a not at the web edge 17 transfer strip 7, it is advantageous if the second blowing device 16 has two nozzles 16.1, 16.3, which are preferably directed to each web edge 17.1, 17.2 of the moving web 2.

FIG. 2 shows a schematic side view of individual devices of the winding machine according to the invention. With regard to the general description of FIG. 2, reference is made to FIG.

According to the invention, it is now provided that at least one application device 18 for applying the transfer strip 7 to the outer peripheral surface 3.21 of the new winding core 3.2 is arranged downstream of the first blowing device 10, wherein preferably also this first blowing device 10 downstream application device 18 can be brought into a waiting position.
The application device 18 is, as shown in Figure 2, as a at least two rollers 18.11, 18.12 run band 18.2, in particular a sieve, or at least one not shown, but known in the art roller, wherein the applying device 18 at least partially to the outer peripheral surface 3.21 of the new hub 3.2 can be adjusted by known means.
Furthermore, it is provided that the first blowing device 10 (as in FIG. 1) and / or the application device 18 in the respective discharge region from the outer peripheral surface 3.21 of the new winding core 3.2 with the winding core 3.2 directed blowing nozzles 19, which apply the transfer strip 7 again with compressed air and him invest in the said outer peripheral surface 3.21, are provided or is.

The two Figures 3a and 3b show two plan views of the partially illustrated separating device 8 of the winding machine according to the invention.

As shown in Figure 3a, it is now provided according to the invention that the separation nozzle 12 to the winding roller 5 to a distance A _W in the range of 1 mm to 5 mm, preferably from 2 mm to 3 mm, can be brought and that in the presence of a not lying on the web edge 17 transfer strip 7 on the chamber, not shown, two separating nozzles 12.21, 12.22, preferably one each end face, are attached.
The distance between the two separation nozzles 12.21, 12.22 is preferably set such that between the respective separation nozzle 12.21, 12.22 and the transfer strip 7, a distance A _Ü from 1 mm to 5 mm, preferably from 2 mm to 3 mm, wherein the transfer strip As a rule, has a width B of 250 mm to 1,000 mm, preferably from 350 mm to 750 mm.
FIG. 3b shows an alternative representation of the two separating nozzles 12.21, 12.22 near the indicated winding roller 5. In order to further shorten the ejection time, each separating nozzle 12.21, 12.22 can be assigned its own control valve 12.31, 12.32. Alternatively to Figures 1, 2 and 3a, the separating nozzles 12.21, 12.22 together form a C-shaped pipe section 20, in which the pressure line 13 opens.
Moreover, in FIG. 3b, the two blowing nozzles 16.1, 16.3 of the second blowing device 16 (not shown) are schematically indicated.
If one requires a particularly high air outlet speed at the two separating nozzles 12.21, 12.22, one can form the two separating nozzles 12.21, 12.22 as Laval nozzles 12.1, as shown in FIG. 3c.

FIG. 4a shows a schematic representation of a first exemplary embodiment of a cutting path according to the invention, in which the running material web 2 is cut in the web running direction L (arrow) in front of or on the winding roller. In the present case, a cutting device with two separating elements 6.1 1, 6.12 is used. In this case, the two cutting elements 6.11, 6.12 in spaced locations each at least approximately centrally with respect to the transverse direction set and then proceed to their respective adjacent web edge 17.1, 17.2.

FIG. 4b shows a schematic representation of a second exemplary embodiment of a cutting path according to the invention, in which the running material web 2 is cut in the web running direction L (arrow) in front of or on the winding roller. Also in the present case, a cutting device with two separating elements 6.11, 6.12 is used. In this case, the two cutting elements 6.11, 6.12 in the region of the two web edges 17.1, 17.2 to form a respective transfer strip 7.1, 7.2 set at a distance from the respective edge of the web and then in each case moved at least to the center of the web M. In the illustrated embodiment, the running material web 2 is cut so that overlap the cut lines generated by the two cutting elements 6.11, 6.12 in the region of the web center M.

4c shows a schematic representation of a third embodiment of a cutting path according to the invention, in which the running material web 2 in the web running direction L (arrow) is again cut in front of or on the winding roller. In this case, only one cutting element 6.1 is used. This cutting element 6.1 is set in the region of a web edge to form a transfer strip 7.1 at a distance from this and then moved to the opposite edge of the web.

In summary, it should be noted that the invention provides a method and a winding machine of the type mentioned above, the optimal winding first of the at least one new transfer strip and then the time-displaced following running web on the new core with optimal runnability and favorable investment and process costs enable.

LIST OF REFERENCE NUMBERS

1

winder

2

web

2.1, 17, 17.1, 17.2

web edge

3

Winding core (Tambour)

3.1

Old hub

3.2

New hub

3.21

Outer peripheral surface (new core)

4

reel

5

Winding roller (carrier drum)

5.1

Outer peripheral surface (winding roller)

6

cutter

6.1, 6.11, 6.12

cutting element

7, 7.1, 7.2

Transfer strip

8th

separator

9

High-energy air jet

10

First blowing device

10.1

blown body

10.2

Blasschuh

10.31, 10:32

blow nozzle

11

chamber

12, 12.21, 12.22

separation nozzle

12.1

Laval

13, 15.1, 15.2, 16.2

pressure line

14

control device

14.1

control line

16

Second blowing device

16.1, 16.3

blow nozzle

18

applying means

18.11, 18.12

roller

18.2

Ribbon (sieve)

19

blow nozzle

20

pipe section

A _Ü

Distance (transfer strip)

A _W

Distance (winding roller)

B

width

D

diameter

L

Web direction (arrow)

M

railway center

N

nip

S

cut

Claims (56)

1. Method for winding up a running material web (2), in particular a paper or board web, in which the running material web (2) is wound up successively onto a plurality of cores (3), in particular spools, and in which in each case winding up onto a new core (3.2) is begun when a wound roll (4) formed on a previous old core (3.1) has reached a predetermined diameter (D), the new and pre-accelerated core (3.2) preferably being brought directly onto a winding roll (5), in particular a carrier drum, over whose partial outer circumferential surface (5.1) the running material web (2) is guided before being wound up onto the core (3), forming a nip (N), and at least one cut (S) being made into the running material web (2) before or on the winding roll (5) by means of at least one cutting device (6), forming at least one incorporated transfer strip (7), the at least one cut (S) preferably being made parallel to the edge (2.1, 17, 17.1, 17.2) of the running material web (2) and in the running direction (L) of the running material web (2),
   characterized in that
   after the at least one cut start has passed through the nip (N) formed by the winding roll (5) and the new core (3.2), the at least one incorporated transfer strip (7) that is formed is separated from the outer circumferential surface (5.1) of the winding roll (5) by means of at least one high-energy air jet (9) that is produced briefly and directed by at least one separating device (8), and is simultaneously severed in this way, and
   in that subsequently the at least one now separated transfer strip (7) is transferred and laid on the outer circumferential surface (3.21) of the new core (3.2) by means of at least one first blowing device (10) in particular a blower shoe (10.2).
2. Method according to Claim 1, characterized in that the high energy air jet (9) is directed perpendicularly or approximately perpendicularly with respect to the running direction of the material web (2).
3. Method according to Claim 1, characterized in that the high-energy air jet (9) is directed at an angle of greater than 45°, preferably greater than 60°, in particular greater than 75°, counter to the running direction of the material web (2).
4. Method according to one of the preceding claims, characterized in that the transfer strip (7) is laid on the outer circumferential surface (3.21) of the new core (3.2) by means of at least one laying device (18) arranged downstream of the first blowing device (10).
5. Method according to one of the preceding claims, characterized in that the directed high-energy air jet (9) becomes effective only for approximately 0.05 s to 1 s, preferably only approximately 0.1 s to 0.5 s.
6. Method according to one of the preceding claims,
   characterized in that, in order to generate the directed high energy air jet (9), use is made of compressed air at a pressure of approximately 5 bar to 15 bar, preferably 7 bar to 10 bar.
7. Method according to one of the preceding claims, characterized in that the directed high energy air jet (9) has a flow velocity in the region of the speed of sound.
8. Method according to one of the preceding claims, characterized in that the separating device (8) is brought up to the winding roll (5) as far as a distance (A_w) of 1 mm to 10 mm, preferably of 2 mm to 5 mm.
9. Method according to one of the preceding claims, characterized in that, after the separated transfer strip (7) has been transferred and laid on the outer circumferential surface (3.21) of the new core (3.2), the running material web (2) is severed completely by means of the at least one cutting device (6), which is moved in a plane relative to the running material web (2) that is preferably approximately parallel to the running material web (2).
10. Method according to Claim 9, characterized in that the cutting device (6) is preferably moved at least substantially perpendicularly with respect to the web running direction (L) in such a way that an oblique cutting line is produced.
11. Method according to Claim 9 or 10, characterized
    in that, as the running material web (2) is severed, the cutting device (6) is moved with a preferably at least approximately constant speed of preferably about 10 m/s to 40 m/s.
12. Method according to one of the preceding claims, characterized in that two cutting devices (6) for cutting and for severing the running material web (2), preferably at points spaced apart in the web running direction (L) of the running material web (2), are in each case applied at least approximately centrally with respect to the transverse direction.
13. Method according to Claim 12, characterized in that each of the two cutting devices (6) for severing the running material web (2) is moved to its nearest edge (17, 17.1, 17.2) of the running material web (2).
14. Method according to one of Claims 1 to 11, characterized in that a cutting device (6) for cutting and severing the running material web (2) is preferably applied in the region of one of the two web edges (17, 17.1, 17.2), at a distance from the latter.
15. Method according to Claim 14, characterized in that the cutting device (6) for severing the running material web (2) is moved to its opposite edge of the running material web (2).
16. Method according to one of Claims 1 to 11, characterized in that two cutting devices (6) for cutting and severing the running material web (2) are preferably applied in the region of the two web edges (17, 17.1, 17.2), at a distance from the latter.
17. Method according to Claim 16, characterized in that the two cutting devices (6) for severing the running material web (2) are moved at least as far as the centre (M) of the running material web (2).
18. Method according to one of Claims 1 to 8, characterized in that, as the separated transfer strip (7) is being transferred and laid on the outer circumferential surface (3.21) of the new core (3.2) or afterwards, the at least one cutting device (6) is rendered inactive, and in that, preferably simultaneously, the running material web (2) is acted on by at least one second blowing device (16) in such a way that it preferably tears transversely with respect to its web running direction (L) towards the at least one web edge (17, 17.1, 17.2).
19. Method according to Claim 18, characterized in that, during the operation of the second blowing device (16), use is made of compressed air at a pressure of approximately 5 bar to 15 bar, preferably 7 bar to 10 bar.
20. Method according to Claim 18 or 19, characterized in that the compressed air in the working region has a flow velocity in the region of the speed of sound.
21. Method according to one of the preceding claims, characterized in that, between the nearly formed wound roll (4) and the winding roll (5), a nip (N) is maintained until the severing of the running material web (2) has been completed.
22. Method according to one of Claims 1 to 20, characterized in that, before the at least one cut (S) is made in the running material web (2) by means of the at least one cutting device (6), forming at least one (incorporated) transfer strip (7), the almost full wound roll (4) is moved away from the winding roll (5), forming a free draw in the running material web (2).
23. Method according to one of Claims 1 to 20, characterized in that, after the at least one cut (S) has been made in the running material web (2) by means of the at least one cutting device (6), forming at least one incorporated transfer strip (7), and before the complete severing of the running material web (2), the almost full wound roll (4) is moved away from the winding roll (5), forming a free draw in the running material web (2).
24. Method according to one of the preceding claims, characterized in that, after the transfer strip (7) has been laid on the outer circumferential surface (3.21) of the new core (3.2), the separating device (8) and the first blowing device (10) are moved into a waiting position, which is preferably located outside the active range of the winding roll (5) and the wound roll (4).
25. Method according to Claim 24, characterized in that the laying device (18) arranged downstream of the first blowing device (10) is moved into a waiting position.
26. Winding machine (1) for winding up a running material web (2), in particular a paper or board web, in which the running material web (2) is wound up successively onto a plurality of cores (3), in particular spools, and in which in each case winding up onto a new core (3.2) is begun when a wound roll (4) formed on a previous old core (3.1) has reached a predetermined diameter (D), the new and pre-accelerated core (3.2) preferably being able to be brought directly onto a winding roll (5), in particular a carrier drum, over whose partial outer circumferential surface (5.1) the running material web (2) is guided before being wound up onto the core (3), forming a nip (N), and it being possible for at least one cut (S) to be made into the running material web (2) before or on the winding roll (5) by means of at least one cutting device (6), forming at least one incorporated transfer strip (7), it being possible for the at least one cutting device (6) to be operated in such a way it makes at least one cut (S) preferably parallel to the edge (2.1, 17, 17.1, 17.2) of the running material web (2) and in the running direction (L) of the running material web (2),
    characterized
    in that, preferably immediately after the nip (N), at least one separating device (8) is provided which, by means of a brief and directed high-energy air jet (9), separates the at least one transfer strip (7) that is formed from the outer circumferential surface (5.1) of the winding roll (5), and simultaneously severs it in this way, and
    in that subsequently at least one first blowing device (10), in particular a blower shoe (10.2) is provided, which transfers and lays the at least one now separated transfer strip (7) on the outer circumferential surface (3.21) of the new core (3.2).
27. Winding machine (1) according to Claim 26, characterized in that the high energy air jet (9) is directed perpendicularly or approximately perpendicularly with respect to the running direction of the material web (2).
28. Winding machine (1) according to Claim 26, characterized in that the high-energy air jet (9) is directed at an angle of greater than 45°, preferably greater than 60°, in particular greater than 75°, counter to the running direction of the material web (2).
29. Winding machine (1) according to one of Claims 26 to 28, characterized in that at least one laying device (18) is arranged downstream of the first blowing device (10) in order to lay the transfer strip (7) on the outer circumferential surface (3.21) of the new core (3.2).
30. Winding machine (1) according to one of Claims 26 to 29, characterized in that the separating device (8) comprises at least one separating nozzle (12, 12.21, 12.22) preferably fitted to the end of a chamber (11), it being possible for pressure from at least one pressure source to be applied to the chamber (11) via a pressure line (13), and the separating nozzle (12, 12.21, 12.22) being formed in such a way that it briefly expels a directed high energy air jet (9) into the at least one cut (S) and separates the at least one incorporated transfer strip (7) that is formed from the outer circumferential surface (5.1) of the winding roll (5) and in this way simultaneously severs the said strip.
31. Winding machine (1) according to Claim 30, characterized in that the separating nozzle (12, 12.21, 12.22) is formed as a Laval nozzle (12.1).
32. Winding machine (1) according to one of Claims 26 to 31, characterized in that a control device (14) is provided which limits the expulsion time of the directed high energy air jet (9) from the separating nozzle (12, 12.21, 12.22) to approximately 0.05 s to 1 s, preferably to approximately 0.1 s to 0.5 s.
33. Winding machine (1) according to one of Claims 26 to 32, characterized in that the separating nozzle (12, 12.21, 12.22) can be brought up to the winding roll (5) as far as a distance (A_w) in the range from 1 mm to 5 mm, preferably from 2 mm to 3 mm.
34. Winding machine (1) according to one of Claims 30 to 33, characterized in that two separating nozzles (12.21, 12.22) are fitted to the chamber (11), preferably one at each end.
35. Winding machine (1) according to one of Claims 26 to 34, characterized in that the first blowing device (10) has a blowing element (10.1), preferably a blower shoe (10.2), with a preferably curved external contour and at least one unit comprising blowing nozzles (10.31, 10.32), it being possible for pressure from at least one pressure source to be applied to the blowing element (10.1) via a pressure line (15.1, 15.2) in such a way that the blowing element (10.1) transfers and lays the at least one now separated transfer strip (7) on the outer circumferential surface (3.21) of the new core (3.2).
36. Winding machine (1) according to Claim 35, characterized in that the blowing element (10.1) has a plurality of units, in particular rows, of blower nozzles (10.31, 10.32) arranged one after another in the manner of a cascade.
37. Winding machine (1) according to Claim 35 or 36, characterized in that the blower nozzles (10.31, 10.32) are formed as Coanda nozzles.
38. Winding machine (1) according to Claim 30 or 35, characterized in that the pressure source generates an air pressure of at least 5 bar, preferably of 7 bar to 10 bar.
39. Winding machine (1) according to one of Claims 26 to 38, characterized in that the laying device (18) is constructed as a belt (18.2), in particular a fabric, led over at least two rolls (18.11, 18.12), or as at least one roll, it being possible for the laying device (18) to be set at least partly against the outer circumferential surface (3.21) of the new core (3.2).
40. Winding machine (1) according to one of Claims 35 to 39, characterized in that the first blowing device (10) and/or the laying device (18) is provided with blower nozzles (19) directed towards the core in the respective run-off region from the outer circumferential surface (3.21) of the new core (3.2).
41. Winding machine (1) according to one of Claims 26 to 40, characterized in that, after the transfer strip (7) has been laid on the outer circumferential surface (3.21) of the new core (3.2), the separating device (8) and the first blowing device (10) can be moved into a waiting position, which is preferably located outside the active range of the winding roll (5) and the wound roll (4).
42. Winding machine (1) according to Claim 41, characterized in that the laying device (18) arranged downstream of the first blowing device (10) can be moved into a waiting position.
43. Winding machine (1) according to one of claims 26 to 42, characterized in that the cutting device (6) provided is a cutting element (6.1, 6.11, 6.12) that operates without contact, such as in particular a water-jet or laser-beam cutting element or a blower nozzle.
44. Winding machine (1) according to Claim 43, characterized in that the cutting device (6) is arranged before the winding roll (5) in the web running direction (L).
45. Winding machine (1) according to Claim 43, characterized in that the cutting device (6) is arranged on the winding roll (5).
46. Winding machine (1) according to one of Claims 43 to 45, characterized in that two cutting devices (6) are provided, which can be applied at points spaced apart, in each case at least approximately centrally with respect to the transverse direction.
47. Winding machine (1) according to Claim 46, characterized in that the two cutting devices (6) can then each be moved to their nearest web edge.
48. Winding machine (1) according to one of Claims 43 to 45, characterized in that two cutting devices (6) are provided, which can be applied in the region of the two web edges (17.1, 17.2) in order to form a respective transfer strip (7.1, 7.2) at a distance from the respective web edge (17.1, 17.2).
49. Winding machine (1) according to Claim 48, characterized in that the two cutting devices (6) can then each be moved at least as far as the centre (M) of the web.
50. Winding machine (1) according to Claim 48 or 49, characterized in that the two cutting devices (6) can be moved in such a way that the cut lines produced by the two cutting devices (6) intersect in the region of the centre (M) of the web.
51. Winding machine (1) according to one of Claims 43 to 45, characterized in that only one cutting device (6) is provided, and in that this cutting device (6) can be applied in the region of one web edge in order to form a transfer strip (7) at a distance from the latter.
52. Winding machine (1) according to Claim 51, characterized in that the one cutting device (6) can then be moved as far as the opposite web edge.
53. Winding machine (1) according to one of Claims 26 to 45, characterized in that in the region of the chamber (11) of the separating device (8) there is arranged at least one second blowing device (16) which has at least one blower nozzle (16.1, 16.3) and can have pressure from at least one pressure source applied to it via a pressure line such that it briefly expels a directed high energy jet (9) and tears the running material web (2), preferably transversely with respect to its web running direction (L), towards the at least one web edge (17).
54. Winding machine (1) according to Claim 53, characterized in that the blower nozzle (16.1, 16.3) is formed as a Laval nozzle (12.1).
55. Winding machine (1) according to Claim 53 or 54, characterized in that a control device is provided which limits the expulsion time of the directed high energy air jet (9) from the blower nozzle (16.1, 16.3) to approximately 0.05 s to 1 s, preferably to approximately 0.1 s to 0.5 s.
56. Winding machine (1) according to one of Claims 53 to 55, characterized in that the second blowing device (16) has two blower nozzles (16.1, 16.3) which are preferably each directed towards one edge (17, 17.1, 17.2) of the running material web (2).

Images