EP1179632A1 - Process and apparatus for transferring a flexible web - Google Patents

Abstract

An apparatus is available for transferring a flexible material web from an upstream section to at least one downstream section of a machine having a web running direction. The machine is configured for at least one of manufacturing and treating the material web. The apparatus includes two separation elements configured for splitting and thereby separating the material web into an edge strip, an adjoining transfer strip and a remaining web adjoining the transfer strip, the edge strip extending in the web running direction. The apparatus further includes at least one deflection device configured for deflecting the edge strip away from the transfer strip and simultaneously tautening the edge strip upon deflection thereof.

Description

The invention relates to a method for transferring a flexible material web, especially paper or cardboard web, from a previous one to at least one subsequent section of one of the manufacture and / or treatment of the machine serving the material web, in particular Paper machine in which the material web by means of two separating elements in an edge strip extending in the direction of web travel, one adjacent transfer strips and those on these transfer strips adjacent remaining web is divided. It also relates to a device according to the preamble of claim 26.

In a method known from WO 98/33974 of the aforementioned Art is used to transfer the paper or cardboard web etc. from End of the dryer section of a paper machine to subsequent machine sections or sections, e.g. Calender, wrapping machine, etc., at the end of the dryer section a narrow strip (transfer strip) cut the paper web. While the remaining, adjacent sections the web straight into a pulper or broiler the strip is supported by aids such as rope guides, Transfer belts, etc. transferred to the following machine sections.

This results in a relatively unstable run of the strip the subsequent machine sections, resulting in time-consuming and expensive Web breaks can lead.

If the transfer strip is formed from the edge strip, then there is Danger of its running due to the air movements in the area of the stool, e.g. in the machine section of a winder.

The aim of the invention is to provide a method and an apparatus at the beginning to create the type mentioned, in which the aforementioned disadvantages are eliminated and as simple and reliable as possible fast, safe transfer of the material web is guaranteed. moreover should remove the transfer strip from the remaining material web as well as a stable run of the separated Transfer strip to the machine element at the end of the Transfer line be ensured.

With regard to the method, this object is achieved according to the invention solved that the edge strip laterally deflected away from the transfer strip and tightened at the same time.

Because of this training is a simple and reliable way quick and safe transfer of the material web ensured. there is an extremely stable run of the Transfer strip guaranteed. It also prevents that during the edge strip runs along with the threading strip during the transfer process, which has led to demolition so far. The edge strip can in particular in a pulper or reject bin.

The edge strip is preferably deflected by at least one of an air jet.

According to an expedient embodiment of the method according to the invention is the one closest to the edge of the path in question Separator activated to create the border strip, and then the other if the edge strip is already tightened and deflected Separator activated to create the transfer strip.

After transfer of the transfer strip to at least one subsequent one The machine section can continue this from the relevant web edge Move the removed separator to the opposite edge of the web to separate the remaining web. According to the concerned Separating element closest to the edge of the web to the relevant one Be traversed to separate the edge strip.

In a preferred embodiment of the method according to the invention the transfer strip is initially at a smaller distance from the relevant one Path edge is generated and the distance from the path edge is then created by correspondingly moving the separating elements in the transverse direction increased. The maximum distance between the transfer strip and relevant web edge preferably smaller than its distance from the opposite Web edge. The transfer strip can accordingly by moving the separating elements in the transverse direction with respect to at least positioned according to a subsequent machine section become. The positioning of the transfer strip can be so in particular take place in the subsequent machine section concerned is finally covered in its entire width. So it can be simple and reliably be ensured, for example, that the Transfer strips in their entire width from a respective nip, e.g. Winding gap or the like. Is detected.

Accordingly, there is in particular the possibility that the transfer strip to transfer it into at least a first machine section first generated at a smaller distance from the relevant web edge and the distance from the edge of the web at least for the transfer another machine section by the corresponding method of Separating elements in the transverse direction is enlarged.

By a corresponding movement of the separating elements in the transverse direction can also set the desired width of the transfer strip become.

Expediently, a contactless one is used as the separating element Separating element, in particular high pressure water jet or laser beam separating element, or a mechanical cutting element, in particular Knife or circular knife element used.

When using contactless separating elements in one Paper machine, it is advantageous if the separation process on the last one Drying cylinder is done. Are mechanically working as separating elements Cutting elements used, the separation process is preferably carried out in an unsupported train of the material web.

The material web is expedient at the beginning of the separation process led into the pulper or reject container.

In a preferred embodiment of the method according to the invention it is provided that both separating elements are attached within the material web be and accordingly within this material web with the Separation is started. Alternatively, it is also possible, at least to activate a separating element already outside the material web.

The verge and the remaining lane are preferred up to wide driving passed into the pulper or reject bin.

The transfer strip can be transferred via at least one auxiliary transfer device, in particular rope guide, transfer belt, air guide device and / or the like., are transferred to the subsequent machine section.

The edge strip is advantageously generated with a width that in a range from about 50 mm to about 300 mm, and preferably in is in a range from about 50 mm to about 250 mm.

The transfer strip is expediently produced with a width that in a range from about 50 mm to about 400 mm and preferably in is in a range from about 50 mm to about 200 mm.

According to a preferred practical embodiment, the transfer strip is generated so that it is closest to the relevant edge of the web edge to the edge of the chair or to the rope guides a distance that is greater than about 150 mm. The distance in particular lie in a range from approximately 150 mm to approximately 1000 mm.

The device according to the invention is accordingly characterized in that that means are provided to the side of the edge strip To deflect the transfer strips away and tighten them at the same time.

Preferred embodiments of the device according to the invention are specified in the subclaims.

The method according to the invention and the device according to the invention can, for example, during a transfer from the dryer section to a winder, from the dryer section to a calender and over this to a winder, from the dryer section to one Coating unit, size press, and / or the like, or e.g. even with one Transfer from a dry end section or one Predrying section can be used. The transfer can in particular in the edge area, e.g. on the operator side of the paper machine. The transfer strip is advantageously one of the chairs cut more distant area of the web. However, it is advantageous if the distance is not too large, so that in the event of a tear access to the elimination of committees is given.

By appropriate method of the separating elements, it is possible to Transfer strips in each machine section at an optimal distance to lead to the edge of the track. For example, if there is a transfer from Dryer section via an online calender to a winder, see above the transfer strip can initially when transferring over the calender be cut out at a smaller distance from the edge of the web, since the Transfer strips, for example, with the help of transfer ropes, etc. the calender can be guided. In the next step, the Distance of the transfer strip to the edge of the web by an appropriate Procedure of the pair of separators are enlarged to optimal ratios especially in the area of the winding gap on the winding apparatus achieve. This improves the running safety of the transfer strip. It is essential here that the transfer strip at least on its entire width of the winding gap is detected.

The invention is particularly advantageous particularly in the case of such a device Operating state applicable, in which instead of in a winder of an empty reel one already partially wrapped with paper Drum is provided. This situation is, for example, with a paper web tear encountered. To ensure that for a safe Transfer covers the full width of the transfer strip from the winding nip is that of the carrier drum and the paper layers of the partially coiled Tambours is formed, the transfer strip must be in the appropriate Position brought, which according to the invention by a corresponding Movement of the pair of separators to simple and reliable Way is possible. The position depends on the paper size, i.e. the width of the paper web produced. This is again from depending on the type of paper produced and the respective customer requirements.

Fig. 1

eine rein schematische Teildarstellung einer Vorrichtung zum Überführen einer Papier- oder Kartonbahn vom letzten Trokkenzylinder zu einem Kalander und über diesen zu einem Wickelapparat, wobei der Überführstreifen bis zum Wickelapparat geführt ist und ein Tambourwechsel vorliegt, d.h. die Bahn auf einen Leertambour übergeben wird, und

Fig. 2

eine mit Fig. 1 vergleichbare Darstellung, wobei jedoch ein Bahnabriß vorliegt und die Papier- oder Kartonbahn entsprechend auf einen bereits teilweise bewickelten Tambour übergeben wird.

The invention is explained below using exemplary embodiments with reference to the drawing; in this show:

Fig. 1

a purely schematic partial representation of a device for transferring a paper or cardboard web from the last drying cylinder to a calender and via this to a winding apparatus, the transfer strip being guided up to the winding apparatus and there being a reel change, i.e. the web being transferred to an empty reel, and

Fig. 2

a representation comparable to Fig. 1, but there is a web break and the paper or cardboard web is transferred accordingly to a partially wound reel.

The device shown in the two FIGS. 1 and 2 is used for transferring a flexible material web, here for example a paper or Cardboard web 10, from a previous machine section, here for example a dryer section 12, to at least one subsequent one Section, here for example a calender 14 and a subsequent one Winding apparatus 16, one of the manufacture and / or treatment of the material web serving machine, i.e. in the present case a paper machine 18th

The material web 10 is in this case by means of two separating elements 20, 22 in an edge strip 24 extending in the web running direction L, one adjoining transfer strips 26 and those on these transfer strips 26 adjacent remaining web 28 divided.

As can be seen from the two Figs. 1 and 2, the edge strip 24 laterally deflected away from the transfer strip 26. In doing so this Edge strips 24 tightened at the same time, for example by means of a Air jet can be done. This edge strip 24 is then in a reject container or Pulper 30 passed.

Preferably, this is the closest to the relevant web edge 32 located separating element 20 activated to produce the edge strip 24, and then with the already tightened and deflected Edge strip 30 activates the other separating element 22 around the transfer strip 26 to generate.

After transferring the transfer strip 26 to at least one Subsequent machine section 14, 16 is that of the relevant web edge 32 distant separating element 22 to the opposite edge of the web 34 to separate the remaining web 28.

After transferring the transfer strip 26 to at least one subsequent machine section 14, 16 becomes the web edge in question 32 closest separating element 20 to the relevant web edge 32 move to separate the edge strip 24.

At least at the beginning of the transfer process, the transfer strip 26 so generated that the web edge 32 in question is closest to it Edge 36 at a smaller distance A1 from the relevant web edge 32 and accordingly at a smaller distance B1 from the edge of the chair 40 has.

In the embodiment shown in FIG. 1, in which the material web 10 finally to an empty reel 38 of the winding apparatus 16 is passed, it preferably remains at this smaller distance of Transfer strip 26 to the web edge 32 or the chair edge 40.

In contrast, the transfer strip 26 for transferring the material web 10 on an already partially wound drum 38 '(see FIG. 2) initially at a smaller distance A1 to the relevant web edge 32 or in one creates a smaller distance B1 to the edge of the chair 40 (see FIG. 1) and the distance from the edge of the web 32 or from the edge of the chair 40 then by correspondingly moving the separating elements 20, 22 in the transverse direction for example enlarged to a value A2 or B2. It is also the greater distance A2 of the transfer strip 26 to the web edge 32 still smaller than its distance from the opposite web edge 34.

The transfer strip 26 can thus by moving the separating elements 20, 22 in the transverse direction, for example with respect to the between the Drum 38 and a support drum 39 formed nip 42 of the Winding apparatus 16 can be positioned in the desired manner. there the transfer strip 26 can in particular be positioned so that this in the relevant subsequent machine section, here in the Winding device 16, is finally detected in its entire width.

As a separating element 20, 22, for example, a contactless one working separating element, in particular water jet or laser beam separating element, or a mechanical cutting element, in particular knife or circular knife element can be used. Become contactless working separating elements 20, 22 used, the separation process takes place expediently on the last drying cylinder 44 of the dryer section 12. Are separating elements 20, 22 mechanically working cutting elements used, the separation process is advantageously carried out in one unsupported train of material web 10.

Before the separation process begins, the material web 10 is placed in the pulper 30 guided. It is removed from the surface by a scraper (not shown) the drying cylinder 44 scraped. Up to be driving also the edge strip 24 and the remaining web 28 passed into the pulper 30.

The edge strip 24 can be produced with a width, for example, those in a range from about 50 mm to about 300 mm, and preferably is in a range from about 50 mm to about 250 mm. The transfer strip 26 is generated, for example, with a width that is in an area from about 50 mm to about 400 mm, and preferably in a range from about 50 mm to about 200 mm.

The transfer strip 26 is expediently generated so that its edge 36 closest to the edge 32 of the chair to the edge of the chair 40 has a distance B1, B2 which is in a range of about 150 mm to about 1000 mm.

• Positionieren der Trennelemente 20, 22 so, daß die gesamte Breite des Überführstreifens 26 vom Nip 42 am Ende der betreffenden nachfolgenden Maschinensektion 16 erfaßt wird,
• Aktivieren des dem Bahnrand 32 am nächsten gelegenen Trennelements 20 zum Schneiden eines Randstreifens 24,
• Straffung des Randstreifens 24,
• Ablenken des Randstreifens 24 weg von der abgetrennten Bahn nach außen,
• Aktivieren des zweiten Trennelements 22 zum Schneiden eines Überführstreifens 26,
• Überführen des Überführstreifens 26 in Überführhilfseinrichtungen und von dort zur nächsten Maschinensektion,
• Bewegen des zweiten Trennelements 22 zum gegenüberliegenden Rand 34 der Materialbahn 10 und Durchtrennen der Restbahn 28,
• Verfahren des ersten Trennelements 20 zum Bahnrand 32 und Durchtrennen des Randstreifens 24,
• Deaktivieren der Schneidfunktion der beiden Trennelemente 20, 22,
• Verfahren der beiden Trennelemente 20, 22 in die jeweilige Ausgangsposition.

When the material web 10 is, for example, transferred directly from the dryer section 12 to the winding or rolling apparatus 16, the following method steps can be provided, for example:

• Positioning the separating elements 20, 22 such that the entire width of the transfer strip 26 is gripped by the nip 42 at the end of the subsequent machine section 16 concerned,
• Activating the separating element 20 closest to the web edge 32 for cutting an edge strip 24,
• Tightening the edge strip 24,
• Deflecting the edge strip 24 away from the severed web,
• Activating the second separating element 22 for cutting a transfer strip 26,
• Transferring the transfer strip 26 in transfer auxiliary devices and from there to the next machine section,
• Moving the second separating element 22 to the opposite edge 34 of the material web 10 and severing the remaining web 28,
• Moving the first separating element 20 to the web edge 32 and severing the edge strip 24,
• Deactivating the cutting function of the two separating elements 20, 22,
• Moving the two separating elements 20, 22 into the respective starting position.

• die beiden Trennelemente 20, 22 befinden sich in der jeweiligen Trennposition,
• Aktivieren des dem Bahnrand 32 am nächsten gelegenen ersten Trennelements 20 zum Schneiden eines Randstreifens 24,
• Straffung des Randstreifens 24,
• Ablenken des Randstreifens 24 weg von der abgetrennten Bahn nach außen,
• Aktivieren des zweiten Trennelements 22 zum Schneiden eines Überführstreifens 26,
• Überführen des Überführstreifens 26 in Überführhilfseinrichtungen und von dort zum bzw. über die nächste Maschinensektion 14 bis zu einem Walzenspalt 46 ("pull stack") zum Klemmen und Straffen des Überführstreifens 26, wobei dieser "pull stack" hier zwischen zwei Maschinensektionen 14, 16 angeordnet ist,
• Versetzen des Überführstreifens 26 an eine andere, auf die zweite Maschinensektion 16 abgestimmte Breitenposition durch Verfahren der beiden Trennelemente 20, 22 in die neue Breitenposition (vgl. insbesondere Fig. 2),
• Optimieren der Breite des Überführstreifens 26 durch entsprechendes Verändern des Abstandes zwischen den beiden Trennelementen 20, 22,
• Überführen des Überführstreifens 26 in Überführhilfseinrichtungen und von dort zur übernächsten Maschinensektion,
• Verfahren des zweiten Trennelements 22 zum gegenüberliegenden Bahnrand 28 und Durchtrennen der Restbahn 28,
• Verfahren des ersten Trennelements 20 zum benachbarten Bahnrand 32 und Durchtrennen des Randstreifens 24,
• Deaktivieren der Schneidfunktion der beiden Trennelemente 20, 22,
• Verfahren der beiden Trennelemente in die jeweilige Ausgangsposition (z.B. Trennposition).

The following method steps are conceivable, for example, in particular when the material web 10 is transferred from the dryer section 12 via an online calender 14 (see FIGS. 1 and 2) to the winding or rolling apparatus 16:

• the two separating elements 20, 22 are in the respective separating position,
• Activating the first separating element 20 closest to the web edge 32 for cutting an edge strip 24,
• Tightening the edge strip 24,
• Deflecting the edge strip 24 away from the severed web,
• Activating the second separating element 22 for cutting a transfer strip 26,
• Transfer of the transfer strip 26 in transfer auxiliary devices and from there to or via the next machine section 14 to a nip 46 (“pull stack”) for clamping and tightening the transfer strip 26, this “pull stack” being arranged here between two machine sections 14, 16 is
• Moving the transfer strip 26 to a different width position matched to the second machine section 16 by moving the two separating elements 20, 22 into the new width position (cf. in particular FIG. 2),
• Optimizing the width of the transfer strip 26 by appropriately changing the distance between the two separating elements 20, 22,
• Transferring the transfer strip 26 in transfer auxiliary devices and from there to the machine section after next,
• Moving the second separating element 22 to the opposite web edge 28 and severing the remaining web 28,
• Moving the first separating element 20 to the adjacent web edge 32 and severing the edge strip 24,
• Deactivating the cutting function of the two separating elements 20, 22,
• Moving the two separating elements into the respective starting position (eg separating position).

The two separating elements 20, 22 are controlled by an electronic control 48 controlled.

LIST OF REFERENCE NUMBERS

10

Material web, paper or cardboard web

12

preceding machine section, dryer section

14

subsequent machine section, calender

16

subsequent machine section, winding apparatus

18

paper machine

20

first separating element

22

second separating element

24

edge strips

26

Transfer strip

28

residual web

30

pulper

32

web edge

34

opposite edge of the web

36

edge

38

empty spool

38 '

partially wound drum

39

carrying drum

40

Stuhlungsrand

42

Winding gap, nip

44

last drying cylinder

46

nip

48

electronic control

A1

distance

B1

distance

A2

distance

B2

distance

Claims (51)

Method for transferring a flexible material web (10), in particular paper or cardboard web, from a preceding (12) to at least one subsequent section (14, 16) of a machine used to manufacture and / or treat the material web (10), in particular paper machine, in which the material web (10) is divided by means of two separating elements (20, 22) into an edge strip (24) extending in the web running direction (L), an adjoining transfer strip (26) and the remaining web (28) adjoining this transfer strip (26) becomes,
characterized in that the edge strip (24) is laterally deflected away from the transfer strip (26) and tightened at the same time. Method according to claim 1,
characterized in that the edge strip (24) is deflected by means of at least one air jet. The method of claim 1 or 2,
characterized in that the edge strip is passed into a pulper (30) or reject container. Method according to one of the preceding claims,
characterized in that first the separating element (20) closest to the relevant web edge (32) is activated to produce the edge strip (24), and then the other separating element (22) is activated when the edge strip (30) is already tightened and deflected to create the transfer strip (26). Method according to one of the preceding claims,
characterized in that after the transfer strip (26) has been transferred to at least one subsequent machine section (14, 16), the separating element (22) further away from the relevant web edge (32) is moved to the opposite web edge (34) in order to move the remaining web (28) separate. Method according to one of the preceding claims,
characterized in that after a transfer of the transfer strip (26) to at least one subsequent machine section (14, 16), the separating element (20) closest to the relevant web edge (32) is moved to the relevant web edge (32) in order to move the edge strip (24 ) to separate. Method according to one of the preceding claims,
characterized in that the transfer strip (26) is produced at least at the beginning of the transfer process in the area of the relevant web edge (32). Method according to one of the preceding claims,
characterized in that the transfer strip (26) is initially produced at a smaller distance (A1) from the relevant web edge (32) and the distance from the web edge (32) is subsequently increased in the transverse direction by a corresponding movement of the separating elements (20, 22). A method according to claim 8,
characterized in that the maximum distance (A2) of the transfer strip (26) to the relevant web edge (32) is smaller than its distance from the opposite web edge (34). Method according to claim 8 or 9,
characterized in that the transfer strip (26) is correspondingly positioned by moving the separating elements (20, 22) in the transverse direction with respect to at least one subsequent machine section (16). A method according to claim 10,
characterized in that the positioning of the transfer strip (26) is carried out in such a way that the entire width thereof is finally detected in the subsequent machine section (16) concerned. Method according to one of the preceding claims,
characterized in that the transfer strip (26) for transferring it into at least one first machine section (14) initially produces a smaller distance (A1) from the relevant web wheel (32) and the distance from the web edge (32) then for transfer into at least one other Machine section (16) is enlarged in the transverse direction by appropriate movement of the separating elements (20, 22). Method according to one of the preceding claims,
characterized in that the separating elements (20, 22) are moved accordingly in the transverse direction in order to set the respectively desired width of the transfer strip (26). Method according to one of the preceding claims,
characterized in that a non-contact separating element, in particular water jet or laser beam separating element, or a mechanical cutting element, in particular knife or circular knife element, is used as the separating element (20, 22). Method according to one of the preceding claims,
characterized in that non-contact separating elements (20, 22) are used and the separating process takes place on the last drying cylinder (44) of a paper machine (18). Method according to one of the preceding claims,
characterized in that mechanically working cutting elements are used as separating elements (20, 22) and the separating process takes place in a non-supported pull of the material web (10). Method according to one of the preceding claims,
characterized in that the material web (10) is guided into a pulper (30) or reject container before the separation process begins. Method according to one of the preceding claims,
characterized in that both separating elements (20, 22) are attached within the material web (10) and the separation is accordingly started within this material web (10). Method according to one of claims 1 to 17,
characterized in that at least one separating element (20, 22) is already activated outside the material web. Method according to one of the preceding claims,
characterized in that the edge strip (24) and the remainder web (28) are fed into a pulper (30) or reject container until they are spread. Method according to one of the preceding claims,
characterized in that the transfer strip (26) is transferred to the subsequent machine section (14) via at least one auxiliary transfer device, in particular rope guide, transfer belt, air guide device and / or the like. Method according to one of the preceding claims,
characterized in that the edge strip (24) is produced with a width which is in a range from approximately 50 mm to approximately 300 mm, and preferably in a range from approximately 50 mm to approximately 250 mm. Method according to one of the preceding claims,
characterized in that the transfer strip (26) is produced with a width which is in a range from approximately 50 mm to approximately 400 mm, and preferably in a range from approximately 50 mm to approximately 200 mm. Method according to one of the preceding claims,
characterized in that the transfer strip (26) is produced in such a way that its edge (36) closest to the relevant web edge (32) is at a distance (B1, B2) from the frame edge (40) or the cable guides which is greater than is about 150 mm. Method according to one of the preceding claims,
characterized in that the transfer strip (26) is produced in such a way that its edge (36) closest to the relevant web edge (32) is at a distance (B1, B2) from the frame edge (40) or the cable guides, which is in a Range is from about 150 mm to about 1000 mm. Device for transferring a flexible material web (10), in particular paper or cardboard web, from a preceding (12) to at least one subsequent section (14, 16) of a machine (18) used to manufacture and / or treat the material web (10), In particular paper machine, in which the material web (10) by means of two separating elements (20, 22) in an edge strip (24) extending in the web running direction (L), an adjoining transfer strip (26) as well as the residual web adjoining this transfer strip (26) 28) can be divided, in particular for carrying out the method according to one of the preceding claims,
characterized in that means are provided to deflect the edge strip (24) laterally away from the transfer strip (26) and to tighten it at the same time. Device according to claim 26,
characterized in that at least one air jet generating device is provided for deflecting the edge strip (24). Device according to claim 26 or 27,
characterized in that a guide device is provided for deflecting the edge strip (24). Device according to claim 28,
characterized in that the guide device has a guide surface which, viewed in the running direction (L) of the edge strip (24), viewed from a flat plane at the beginning in the region of the reception of the edge strip (24) into a curved, outwardly facing contact surface for the edge strip (24 ) transforms. Device according to claim 28,
characterized in that the guide device comprises several, in particular three, at least substantially planar, cascade-shaped guide plates provided with lateral cheeks. Device according to one of the preceding claims,
characterized in that the separating elements (20, 22) , which can preferably be moved transversely to the web running direction (L), can be controlled via an electronic control (48). Device according to one of the preceding claims,
characterized in that first the separating element (20) closest to the relevant web edge (32) can be activated in order to produce the edge strip (24), and then the other separating element (22) can be activated when the edge strip (30) is already tightened and deflected to create the transfer strip (26). Device according to one of the preceding claims,
characterized in that after a transfer of the transfer strip (26) to at least one subsequent machine section (14, 16), the separating element (22) further away from the relevant web edge (32) can be moved to the opposite web edge (34) in order to move the remaining web (28) separate. Device according to one of the preceding claims,
characterized in that after the transfer strip (26) has been transferred to at least one subsequent machine section (14, 16), the separating element (20) closest to the relevant web edge (32) can be moved to the relevant web edge (32) around the edge strip (24 ) to separate. Device according to one of the preceding claims,
characterized in that the transfer strip (26) is produced at least at the beginning of the transfer process in the area of the relevant web edge (32). Device according to one of the preceding claims,
characterized in that the transfer strip (26) is initially produced at a smaller distance (A1) from the relevant web edge (32) and the distance from the web edge (32) is subsequently increased in the transverse direction by a corresponding movement of the separating elements (20, 22). Apparatus according to claim 36,
characterized in that the maximum distance (A2) of the transfer strip (26) to the relevant web edge (32) is smaller than its distance from the opposite web edge (34). Apparatus according to claim 36 or 37,
characterized in that the transfer strip (26) can be correspondingly positioned by moving the separating elements (20, 22) in the transverse direction with respect to at least one (16) subsequent machine section (16). Device according to claim 38,
characterized in that the transfer strip (26) can be positioned in such a way that it is finally covered in its entire width in the subsequent machine section (16) concerned. Device according to one of the preceding claims,
characterized in that the transfer strip (26) for its transfer into at least one first machine section (14) initially produces a smaller distance (A1) from the relevant web edge (32) and the distance from the web edge (32) then for transfer into at least one further Machine section (16) is enlarged in the transverse direction by appropriate movement of the separating elements (20, 22). Device according to one of the preceding claims,
characterized in that the respectively desired width of the transfer strip (26) can be adjusted in the transverse direction by a corresponding movement of the separating elements (20, 22). Device according to one of the preceding claims,
characterized in that a separating element, in particular a water jet or laser beam separating element, or a mechanical cutting element, in particular a knife or circular knife element, is provided as the separating element (20, 22). Device according to one of the preceding claims,
characterized in that contactless separating elements (20, 22) are provided and the separating process takes place on the last drying cylinder (44) of a paper machine (18). Device according to one of the preceding claims,
characterized in that mechanically working cutting elements are provided as separating elements (20, 22) and the separating process takes place in a non-supported pull of the material web (10). Device according to one of the preceding claims,
characterized in that both separating elements (20, 22) can be attached within the material web (10) in order to start the separation accordingly within this material web (10). Device according to one of claims 26 to 44,
characterized in that at least one separating element (20, 22) can already be activated outside the material web (10). Device according to one of the preceding claims,
characterized in that at least one auxiliary transfer device, in particular rope guide, transfer belt, air guide device and / or the like, is provided for transferring the transfer strip (26) to the subsequent machine section (14). Device according to one of the preceding claims,
characterized in that the separating elements (20, 22) can be controlled so that the edge strip (24) is produced with a width which is in a range from approximately 50 mm to approximately 300 mm, and preferably in a range from approximately 50 mm to is about 250 mm. Device according to one of the preceding claims,
characterized in that the separating elements (20, 22) can be controlled such that the transfer strip (26) is produced with a width which is in a range from approximately 50 mm to approximately 400 mm, and preferably in a range from approximately 50 mm to is about 200 mm. Device according to one of the preceding claims,
characterized in that the separating elements (20, 22) can be controlled in such a way that the edge (36) of the generated transfer strip (26) closest to the relevant web edge (32) is at a distance (B1.) from the frame edge (40) or the cable guides , B2) which is larger than about 150 mm. Device according to one of the preceding claims,
characterized in that the separating elements (20, 22) can be controlled in such a way that the edge (36) of the generated transfer strip (26) closest to the relevant web edge (32) is at a distance (B1.) from the frame edge (40) or the cable guides , B2), which is in a range from about 150 mm to about 1000 mm.

Images