EP1730061B1 - Process and device for processing a film web - Google Patents

Abstract

In an improved process for processing a film web, the film web is cut in the longitudinal direction, forming a marginal strip and a remaining film web with a width reduced by the width of the marginal strip. The marginal strip is transferred to a movable film-drafting device on which is arranged a gripper. The remaining film web is separated entirely or partially by cutting and also possibly by tearing. The film-drafting device is moved along one side of a roller arrangement, threading the film web into the roller arrangement. The film-drafting device is moved along one side of a winding device comprising at least one winding roller up to a release or end position. The film-drafting device is opened at the end position to release the marginal strip.

Description

The invention relates to a method and a device for processing a film web.

The invention is based on a uniaxial or biaxial film stretching plant, as known from the prior art (for example, from WO96 / 29190 ) is known.

After carrying out a uniaxial or biaxial stretching, the correspondingly produced film is known to be passed through various process and test stations of a roll arrangement (so-called pull-off stand, pull roll) and wound up on a winder. Usually, the film web is drawn in withdrawal stand and winder of film stretching lines by means of a so-called. Open Einziehspaltes manually by an operator. In this case, the film course to follow with alternately looped rollers, and it must be encompassed parts of machine frames. Thus, on the one hand the retraction speed is limited due to the physiological properties of the operator, and on the other hand, the cost of the complex Construction with an open Einziehspalt (so-called C-pillar construction) significantly increased.

The above-mentioned C-pillar construction relates to a construction principle in which the rollers are mutually supported at the top and bottom. A corresponding plant with a so-called C-pillar construction according to the prior art is shown in a schematic cross-sectional view in FIG FIG. 18B reproduced with the C-pillars 2b on one side of the roller assembly. As a result, an accessible longitudinal path for an operator is created on this side of the C-pillars, in order to over this the leading beginning of a film over a in FIG. 18B to be introduced in the section shown in the slot slot E in the arrangement. This feed slot E is formed in a safety grid, which is additionally necessary to protect the operator from the mechanically moving components, in particular the rotating rollers.

The one side of the so-called operator side threaded on the trigger stand film is conveyed in full width through the trigger stand and then wound on an empty winding tube or a winding roll with waste film in the so-called scrap position of the winding device. Only when the film is pulled wide wrinkle-free and meets the appropriate quality criteria, the final winding takes place on a specific intended for further processing winding roll.

Description of the prior art

The manual collection of the film web in the known from the prior art devices has the above Disadvantages, in particular, the operator requires a certain amount of time to retract the film through the roller assembly, which further increases the downtime of the entire system when starting or after a film break.

Furthermore, the handover procedure from the broad stretching machine to the trigger stand and from the trigger stand to the winder is a speed-limiting and above all safety-relevant element during the starting process.

Furthermore, a narrow nip must be provided on the driven rollers, which in turn leads to a complex construction of the roll stand, with which the rollers of the trigger stand are supported.

Solutions are known from the prior art, which are partly based on other principles of solution or even the processing of other materials such as paper webs.

The publication EP 0 425 741 A1 describes a paper feeding device in which the paper to be supplied is introduced into a roller assembly via an adapter made of synthetic material.

The document DE 21 54 119 relates to a method and apparatus for treating film webs, wherein a film strip is cut, which is transported via a pneumatic conveyor to a winding device.

The publication EP 0 427 234 B1 shows an apparatus and method for threading a film into a biaxial Stretching device, in which edge strips are cut, which are transferred to grippers.

From the publication DE 20 21 246 a device for drawing paper webs in rotary printing machines is known, wherein the beginning of the paper web is transported by a motor car running on a rail construction.

By the writings described above and the prior art, a faster and safer overall sequence of the start-up procedure can not be guaranteed in film stretching plants.

A generic method for processing a film web, which expires from a stretching system and an associated generic device for processing a discontinued from a stretching machine film web is from the DE 197 07 472 A1 known. In this case, the film web is cut in the longitudinal direction in order to remove an edge strip from the film web. The reduced to the edge strip in width, the main film web is then transferred to a movable gripping and transport device. Although not described before, during and / or after passing the film web to the movable gripping and transport device, a leading portion of the film web can be cut off, if necessary. The separation can be done by cutting and / or additionally by tearing.

Further, the gripping and transporting means is moved along one side of the plant to thread the film web into a roller assembly. This gripping and transport device can be moved along one side of the winding device with at least one winding roll until the release of the end position, in which end position the gripping and transporting device is opened to release the film web.

The device is constructed so that the above-mentioned method steps can be performed accordingly.

From the US-A-5,037,509 a device has become known in which a threading section of a web can be used for threading a system comprising several rolls.

The object of the invention is to provide, starting from the generic preliminary publication, a method and an apparatus for processing a film web, through which the downtime of an entire stretching system during start-up and, for example, after a film break occurred are shortened. It is another object of the invention to provide a device for producing a wound on a roll of film web, which is constructed simpler compared to the prior art.

The object is achieved by the independent claims. Preferred embodiments and further developments of the invention are specified in the dependent claims.

Vorteilsbeschreibun g

• Im Rahmen der Erfindung ist die Verkürzung des Anfahrvorganges und damit der Ausfallzeiten möglich. Im Rahmen der Erfindung ist ferner ein sicheres Anfahren bzw. Starten und damit ein insgesamt sichererer Betrieb von Folienreckanlagen möglich;
• erfindungsgemäß wird auch die Störanfälligkeit insgesamt reduziert;
• durch die Verringerung der Ausfallzeiten sind insgesamt höhere Anlagengeschwindigkeiten zu erzielen, da im Rahmen der Erfindung erstmals auch Einziehgeschwindigkeiten von über 180m/min möglich sind, wodurch letztlich auch wiederum die Ausstoßleistungen deutlich erhöht werden;
• die Sicherheit für den Betreiber von Folienreckanlagen insbesondere beim Anfahren der Anlage wird deutlich verbessert;
• auf der sogenannten Bedienseite des Abzugständers und des Wickelkontaktwalzenständers kann durch die Erfindung nunmehr eine ähnliche Bauweise wie auf der Antriebsseite umgesetzt werden, da auf die sogenannte C-Säulen-Konstruktion nach dem Stand der Technik verzichtet werden kann. Damit werden die Kosten der Anlage verringert

The invention can be a variety of advantages realize compared to conventional solutions. The main advantages are:

• In the context of the invention, the shortening of the starting process and thus the downtime is possible. In the context of the invention, a safe starting or starting and thus an overall safer operation of film stretching systems is also possible;
• According to the invention, the susceptibility to interference is also reduced overall;
• By reducing the downtime, overall higher line speeds can be achieved, since in the context of the invention pull-in speeds of more than 180 m / min are possible for the first time, as a result of which, in turn, the output rates are significantly increased.
• the safety for the operator of film stretching equipment, especially when starting the system is significantly improved;
• on the so-called operating side of the trigger stand and the winding contact roll stand can now be implemented by the invention, a similar construction as on the drive side, since it can be dispensed with the so-called C-pillar construction according to the prior art. This reduces the cost of the system

The invention comprises several advantages resulting measures that lead in particular in their interaction to decisive improvements.

The film web is first cut according to the invention in the longitudinal direction. As a result, an edge strip and a film web, which is reduced by the edge strip and which is referred to below as the main film web, are formed. The edge strip preferably has a width of about 5 to 10% of the total width of the film web, in particular at least 100 to 200 mm. The edge strip and the main film web are separated at certain times from their respective precursor web in the transverse direction. The separation process of the respective precursor webs from the subsequent film web can begin even before the transfer of the marginal strip to the gripping and transport device and be completed after the transfer.

A particular advantage of the method according to the invention results from the fact that the cutting process carried out longitudinally in the film web to produce a marginal strip is carried out in a section of the discharge area of the stretching plant in which the clips belonging to the stretching plant still hold the film, ie the clips still closed or just opened.

The longitudinal cutting of the edge strip and / or the transverse cutting of the main film web is preferably carried out automatically with a movable cutting device. Alternatively, this can also be done manually or semi-manually. In practice, this may not have to be cross-cut across the full working width of the main film web. Often it is sufficient that the main film web is cut only over a partial width, since the film under train then tears in the transverse direction.

So that the cutting device can perform both the longitudinal section of the edge strip, and the cross section of the main film web, the cutting device is preferably rotatable about a vertically oriented pivot axis. The cutting tool preferably comprises a rotary blade, which is secured by e.g. an integrated drive can be driven.

Furthermore, in a preferred embodiment, the cutting device includes a so-called fixing arrangement, which prevents the further tear of the film web during the cutting process. The fixing arrangement is preferably arranged on the pivot axis of the cutting device and preferably comprises fixing rollers, above and below the film. The fixing rollers are arranged in advance in the cutting direction of the film web in front of the cutting device, so that during the cutting process no uncontrolled tearing operation beyond the fixing rollers can occur. Therefore, the fixing rollers are arranged in close proximity to the cutting tool.

The cutting device is preferably movable at a preselectable angle to the withdrawal direction of the film web over the working width of the film web for the transverse cutting of the main film web in the outlet of the stretching unit.

• die Hauptfolienbahn wird nur über eine Teilbreite quer eingeschnitten und die Folie reißt unter Zug dann in Querrichtung vollständig durch. Eventuell ist es dazu nötig die Fixierrollen zu entlasten.
• Es erfolgt ein Querschnitt der Hauptfolienbahn bis nahe dem Folienrand auf der Antriebsseite. Um die Kollision mit den auslaufenden Kluppen der Reckanlage zu vermeiden, schwenkt die Schneideinrichtung erneut, und schneidet einen zweiten Längsstreifen entlang der Antriebsseite. Nachdem der zweite Randstreifen aus der Reckanlage läuft wird er vom Operator manuell von einem zweiten Querschneider getrennt.
• Alternativ zu der vorstehend genannten Möglichkeit ist es eventuell auch möglich, über die gesamte Abzugsbereite die Folie zu schneiden, nämlich insbesondere dann, wenn der Schneidvorgang mit der Kluppenbewegung so synchronisiert wird, dass die Folienbahn zwischen zwei aufeinander folgenden Kluppen vollständig durchtrennt wird.
• Die Schneidvorrichtung wird in Laufrichtung der Folie an eine Position bewegt, wo der Film bereits ausgekluppt wurde. Dazu wird die Schneideinrichtung hinter die gegenüberliegende Kettenschiene geführt. Der Querschneider durchtrennt somit die Hauptfolienbahn komplett. Der zweite Längsschnitt entfällt somit.

In a further embodiment of the invention, the cutting device can be positioned such that the cross section of the main film web after the longitudinal section of the edge strip is possible in several variants:

• the main film web is only over a partial width cut transversely and the film breaks under train then in the transverse direction completely through. It may be necessary to relieve the fixing rollers.
• There is a cross section of the main film web to near the edge of the film on the drive side. In order to avoid the collision with the expiring staples of the stretching machine, the cutter pivots again, and cuts a second longitudinal strip along the drive side. After the second edge strip runs out of the stretching unit, it is manually separated from the operator by a second cross cutter.
• As an alternative to the above possibility, it may also be possible to cut the film over the entire print ready area, namely in particular when the cutting operation is synchronized with the clip movement so that the film web is completely severed between two consecutive clips.
• The cutting device is moved in the direction of the film to a position where the film has already been unclipped. For this purpose, the cutting device is guided behind the opposite chain rail. The sheeter cuts through the main foil web completely. The second longitudinal section is thus eliminated.

Subsequently, the edge strip is transferred to a gripping and transport device.

The transfer can be done manually, semi-automatic or preferably fully automatic.

In the simplest case, the operator takes over the edge strip and introduces it manually into the mentioned gripping and transport device.

In the case of a semi-automatic transfer, for example, the film web can be picked up near the deflection of the treatment device or stretching system and transported out of the danger zone. Only then does the edge trim section and the cross section take place. Then, the operator can take over the gate and insert it into the gripper of the gripping and transport device, so that the carriage of the gripping and transport device can drive off and thread the film web in the subsequent withdrawal stand device.

The aforementioned transfer device preferably consists of a clamping and / or suction device for guiding the film web in a substantially horizontal direction. In a preferred embodiment of the invention, a conveyor belt (a so-called belt feeder) or for example a vacuum table or the like is used, which can be lifted by a lifting and lowering device, for example in the form of a scissor lift to the film plane. After the provided with a gripper carriage of the gripping and transporting device is started for threading the film web, the conveyor is then lowered again, for example in the form of the so-called "belt feeders".

In addition, however, a fully automatic transfer of appropriately cut film web to the gripping and transport device.

In this preferably fully automatic embodiment of the invention, a gripping and transport device, which is part of a film feeding device, moves to transfer the edge strip to the outlet area of the stretching installation and then automatically grips the edge strip. As a result, an automated transfer of the edge strip is made possible to the film feeding device. During the transfer of the edge strip, the edge strip is furthermore preferably cross-cut.

As mentioned, the film feed device comprises a movable gripping and transport device, comprising an integrated gripping and / or clamping mechanism for the film edge, a drive device and a transport rail. The trapped film travels along a predetermined path along one side of the roller assembly and threads the film web into the roller assembly.

The drive device preferably comprises an electrically and / or mechanically driven carriage with one or more drive rollers which can be moved on a band-shaped transport rail which extends from the outlet region of the stretching device along one side of the roller arrangement and one side of the winding device.

The power supply for the drive unit may preferably be effected by means of rechargeable batteries or via a busbar arranged next to the transport rail. One or more of the drive rollers are provided with a surface coating with a high coefficient of friction to a To allow good frictional engagement with the transport rail. The carriage may further comprise a pressing device with which the drive rollers are pressed against the transport rail.

Finally, the film is transported to an end position on the winder, in which the gripper on the transport device releases the edge strip, so that then the film web is wound on a winding device after prior application of adhesive to the film.

The gripping and transport device may alternately between the transfer position and the release position for winding the film onto a winder, e.g. be moved back and forth. Alternatively, a closed circumferential rail arrangement is possible.

In a further advantageous embodiment of the invention, a section of the transport rail at a region along one side of the winding device is preferably automatically controlled, e.g. by process or pivoting.

In the device according to the invention, an opening mechanism for opening the gripper of the gripping and transport device can furthermore be arranged in the end position of the film feed device. The opening mechanism here is preferably an opening wedge.

In addition, a device can be provided in the region of the winding device, which can apply adhesive to the film web. The mentioned device is preferably provided with a detector or sensor device coupled, with which it can be determined whether there is a film web at one point in the winding device.

Description of the figures

Figur 1:

eine Seitenansicht am Auslauf einer Folienreckanlage mit nachfolgenden Abzugsständern und einer nochmals nachfolgenden Wicklerstation mit einer erfindungsgemäß vorgesehenen Folieneinzugseinrichtung;

Figur 2:

eine Draufsicht auf die aus einer Reckanlage herausgeführten Folienbahn zur Verdeutlichung des Schneidvorgangs gemäß einer Ausführungsform der Erfindung;

Figur:3

eine Seitenansicht einer Schneideinrichtung, wie sie im Rahmen der Erfindung verwendet wird;

Figur 4:

eine Draufsicht auf die aus einer Reckanlage auslaufenden Folienbahn zur Verdeutlichung des Schneidvorgangs gemäß einer weiteren Ausführungsform der Erfindung;.

Figur 5:

eine Draufsicht auf eine aus einer Reckanlage auslaufenden Folienbahn zur Verdeutlichung des Schneidvorgangs gemäß einer alternativen Ausführungsform der Erfindung;

Figur 6:

eine Teilansicht, welche den Übergabevorgang des Randstreifens der Folienbahn an die Folieneinzugseinrichtung gemäß einer Ausführungsform der Erfindung zeigt;

Figur 7:

eine perspektivische Ansicht einer erfindungsgemäßen Ausführungsform einer Greif- und Transporteinrichtung zum Transport eines Randstreifens der Folienbahn;

Figur 8:

eine weitere perspektivische Ansicht der erfindungsgemäßen Greif- und Transporteinrichtung;

Figur 9:

eine Schnittansicht durch die Greif- und Transporteinrichtung und die Transportschiene gemäß Figur 7 entlang einer Ebene senkrecht zur Schienenbahn, wobei der Greifer der Folieneinzugseinrichtung nicht dargestellt ist;

Figur 10:

eine Schnittansicht der Greif- und Transporteinrichtung aus Figur 7 entlang einer Ebene senkrecht zur Schienenbahn, wobei der Greifer der Folieneinzugseinrichtung mit dargestellt ist;

Figur 11:

eine perspektivische Ansicht der in der Greif- und Transporteinrichtung gemäß Figur 7 integrierten Andrückeinrichtung;

Figur 12 A:

eine perspektivische Ansicht einer im erfindungsgemäßen Verfahren verwendeten Transportschiene;

Figur 12 B:

eine Querschnittsdarstellung durch die in Figur 12A gezeigte Transportschiene;

Figur 13A und 13B:

zwei Wickeleinrichtungen in Seitenansicht, wie sie grundsätzlich nach dem Stand der Technik bekannt sind, im Zusammenhang mit zwei alternativen Ausgestaltungen des Endbereiches der Folieneinzugseinrichtung;

Figur 14:

eine teilweise geschnittene Ansicht entlang der Ebene I-I der Figur 13A zur Verdeutlichung der verschwenkbaren Transportschiene gemäß einer Ausführungsform der Erfindung;

Figur 14A:

eine teilweise vergrößerte Wiedergabe des in Figur 14 gezeigten verschwenkbaren Schienenabschnittes;

Figuren 15A bis 15E:

schematische Seitenansichten der Wickeleinrichtung zur Verdeutlichung des Bewegungs- und Verfahrensablaufes gemäß einer Ausführungsform der vorliegenden Erfindung;

Figuren 16A und 16B:

Draufsichten auf einen Teil der Folienbahn in einem Bereich, in dem gemäß zwei alternativen Ausführungsformen der Erfindung Adhäsionsmittel auf die Folienbahn aufgebracht wird;

Figur 17:

eine Detailansicht der Folieneinzugseinrichtung im Bereich der Endposition für die Greif- und Transporteinrichtung;

Figur 18A:

eine Schnittansicht durch einen Abzugständer zum Stand der Technik abweichend gebildeten Walzenständern;

Figur 18B:

eine Querschnittsansicht durch eine Abzugseinrichtung mit Walzenständern nach dem Stand der Technik;

Figur 19A:

eine Seitenansicht auf ein erster Ausführungsbeispiel einer halbautomatischen Übergabeeinrichtung in Seitenansicht bei angehobener Gurtabzugseinrichtung (belt feeder);

Figur 19B:

eine auszugsweise Draufsicht auf die Ausführungsform gemäß Figur 18A auf der Operatorseite der Anlage;

Figur 20A:

eine zu Figur 19A entsprechende Darstellung bei wiederum abgesenktem "belt feeder"; und

Figur 20B:

eine zu Figur 19B entsprechende Drausicht während der Folienproduktion bei abgesenktem "belt feeder".

Embodiments of the invention are described below with reference to the accompanying figures. Show it:

FIG. 1:

a side view at the outlet of a film stretching plant with subsequent withdrawal stands and a further subsequent winder station with a film feeding device provided according to the invention;

FIG. 2:

a plan view of the led out of a stretching machine film web to illustrate the cutting process according to an embodiment of the invention;

Figure: 3

a side view of a cutting device, as used in the invention;

FIG. 4:

a plan view of the expiring from a stretching system film web to illustrate the cutting process according to another embodiment of the invention ;.

FIG. 5:

a plan view of an expiring from a stretching unit film web to illustrate the cutting process according to an alternative embodiment of the invention;

FIG. 6:

a partial view showing the transfer operation of the edge strip of the film web to the Folieneinzugseinrichtung according to an embodiment of the invention;

FIG. 7:

a perspective view of an embodiment according to the invention of a gripping and transporting device for transporting an edge strip of the film web;

FIG. 8:

a further perspective view of the gripping and transporting device according to the invention;

FIG. 9:

a sectional view through the gripping and transporting device and the transport rail according to FIG. 7 along a plane perpendicular to the rail track, wherein the gripper of the film feeding device is not shown;

FIG. 10:

a sectional view of the gripping and transporting device FIG. 7 along a plane perpendicular to the rail track, wherein the gripper of the film feeding device is shown with;

FIG. 11:

a perspective view of the integrated in the gripping and transporting device according to Figure 7 pressing device;

FIG. 12A:

a perspective view of a transport rail used in the method according to the invention;

FIG. 12B:

a cross-sectional view through the in FIG. 12A shown transport rail;

FIGS. 13A and 13B:

two winding devices in side view, as generally known in the prior art, in connection with two alternative embodiments of the end portion of the film feeding device;

FIG. 14:

a partially sectioned view along the level II of FIG. 13A to illustrate the pivotable transport rail according to an embodiment of the invention;

FIG. 14A:

a partially enlarged reproduction of the in FIG. 14 shown pivotable rail section;

FIGS. 15A to 15E:

schematic side views of the winding device to illustrate the movement and process sequence according to an embodiment of the present invention;

FIGS. 16A and 16B:

Top views of a portion of the film web in an area in which adhesive is applied to the film web according to two alternative embodiments of the invention;

FIG. 17:

a detailed view of the film feeding device in the region of the end position for the gripping and transporting device;

FIG. 18A:

a sectional view through a deduction stand to the prior art differently formed roller stands;

FIG. 18B:

a cross-sectional view through a withdrawal device with roller stands according to the prior art;

FIG. 19A:

a side view of a first embodiment of a semi-automatic transfer device in side view with raised belt withdrawal device (belt feeder);

FIG. 19B:

a partial plan view of the embodiment according to Figure 18A on the operator side of the system;

FIG. 20A:

one too Figure 19A corresponding representation in turn lowered "belt feeder"; and

FIG. 20B:

one too FIG. 19B corresponding outer view during film production with the belt feeder lowered.

Detailed description of the figures

FIG. 1 shows in side view the outlet of a film stretching machine, the trigger stand with various process and test stations and the winder according to an embodiment of the invention. The film run 4 is shown as a meandering solid line.

Coming from the outlet of the stretching unit 1, the film 4 is passed through the trigger stand 2 with a plurality of rollers 2a and roll stands 2b. After the film 4 has passed through the peel stand 2, it is fed to a winding device 3, in which the film 4 is wound onto a so-called scrap winding reel 8 after the application of adhesive.

The wrapping on the scrap roll is carried out until the film is aligned over the entire working width, and meets the desired quality requirements.

Subsequently, after the cut with the cross cutter 7, the winding on the winding roll 9 (Wendewicklervorgang).

To transfer the film to a film feeding device is by means of a located in the outlet region of the stretching unit 1 cutting device 11 (not off FIG. 1 visible) a marginal strip cut by the operator 5 is taken and inserted into a gripping and transporting device 10 of a film feeding device when it is located between the stretching device 1 and the winding assembly 2. The gripping and transporting device is in this case along one side of the roller assembly and the winding device on a meandering transport rail 15 movable and can be moved back from its final position P on the transport rail to the operator 5th In the FIG. 1 meander-shaped transport rail 15 shown in side view defines a path which corresponds to the path of the film web through the plurality of rollers belonging to the roller assembly 2 and leads to the winding device to - which will be explained later - here a leading end of the film web to the winding device to hand over.

After the operator has inserted the film edge strip into the film feed device 10, it can cut off the front part of the film edge strip protruding from the film feed device by means of a cutting unit 6. In the in FIG. 1 In the embodiment shown, after the edge strip has been cut, the main film web adjoining the edge strip is cut off manually by the operator or by a plurality of operators 5. Under certain circumstances, a short cut is sufficient so that starting from the cut, the rest of the film web tears off under the existing tensile stress.

Finally, the gripping and transport device moves along the transport rail and pulls over the edge strip the film web in the rollers 2a of the roller assembly 2 a. The construction of the film feed device, which comprises a gripping device for detecting the film web or the edge strip includes and in the manner of a carriage on the transport rail 15 is movable, will be explained later in more detail. The mentioned rollers 2a are driven in a known manner via a drive device, which are provided on the side opposite the transport rail 15 side of the roller assembly.

By the mentioned cutting an edge strip thus a transport line for the film web is thus formed, with the threading of the same is made possible in the roller assembly. The transport rail is in this case arranged between the roller stands and the rollers of the roller arrangement, which is why - in contrast to the prior art - can be dispensed with a complicated column construction on the feed side of the roller assembly.

After the film-feeding device has passed through the roller arrangement, it continues into the winding device 3, in which it is initially guided past the winding rollers 8 and 9. Finally, the film feeding device reaches the parking position P, in which the film edge strip is released and applies to the scrap winding roller 8. At an appropriate point, the application of an adhesive, so that the beginning of the film is held on the scraping roller. Finally, the film web is wound onto the scrap wrapping roll 8.

The following is with reference to FIG. 2 and 3 the explained cutting process according to the invention with respect to the film web 4 and a possible embodiment of the associated cutting device explained.

FIG. 2 shows in the stretching unit 1, the film web 4 is known to be transported via so-called clips 1a, of which schematically some in FIG. 2 are indicated. The end of the cooling zone is in FIG. 2 indicated by the line C. Furthermore, in FIG. 2 the so-called Ausklupplinie highlighted by the line K, at which the clips 1a are opened and the edges of the film web 4 are released.

In the outlet area a generally indicated by dashed lines rectangular security area S is formed, which is not accessible to the operator. In this safety area is the cutting device 11, which is only indicated schematically and will be described in more detail below. The cutting device is located on the operator side and is arranged in a region in the stretching unit 1, in which the film web is still held with the clips 1a. As a result, the required tension for cutting the film is maintained. Out FIG. 2 shows that the cutting device 11 cuts the film web on the operator side, whereby an edge strip 4a and a main film web 4b is formed. The edge strip 4a is in the in FIG. 2 As shown by the operator, the main film web 4b is severed and a precursor web 4'b on the main film web and a leading end of the marginal tape are manually cut by the operator. This is in FIG. 2 indicated by two scissors. Finally, the transport of the edge strip by means of the gripping and transport device, whereby the film web is inserted into the trigger stand and the winding device.

FIG. 3 shows a detailed side view of the cutting and fixing device used in one embodiment of the method according to the invention. The cutting device is in this case mounted on a pivot axis 11a, wherein in the side view according to FIG. 3 an adjustable cutting blade 11b is located to the right of the pivot axis and fixing rollers 11c and 11d adjustable to the left of the pivot axis are mounted. The cutting device is movable with its cutting blade and the fixing over the withdrawal width towards in a leading angle.

In this case, the cutting blade about the pivot axis 11a is rotatable so that the cutting blade is aligned at an angle to the drawing direction of the film web. In this case, the setting is made such that based on the film take-off speed and the feed rate of the cutting blade, a correspondingly correct angle adjustment is made to produce a corresponding preselectable section through the film. Further, so-called fixing rollers 11c and 11d are provided, which are also held and aligned together with the cutter over the pivot axis. The fixing rollers 11c and 11d either rotate freely or are driven by drive means, not shown.

The rollers pressing on above and below the film prevent cracking on the film.

The following is with reference to FIG. 4 one opposite FIG. 2 modified and further improved method for cutting a leading residual film section of a subsequent ultimately wound film web explained. It shows FIG. 4 a top view of the Film web 4 in the outlet region of the treatment device 1, wherein the film is cut automatically in this embodiment of the invention by the cutting device 11. First of all, as for FIG. 2 has been explained, cut by the cutting device 11, a marginal strip 4a, which is inserted into the gripper assembly on said film feeder 10. After inserting the film edge, the front end of the edge can be cut off, as in position P1 FIG. 4 is indicated. Furthermore, in FIG. 4 the gripping and transporting device 10 shown in the position in which the film edge strip is inserted. After an edge has been cut by the cutting device 11, the cutting device moves transversely to the longitudinal direction of the main film web starting from the operator side in the direction of the drive side. This is indicated by a corresponding arrow 11 'in FIG FIG. 4 and corresponding snapshots of the positions of the cutting device 11 indicated in the method. The cutting blade of the cutting device is hereby aligned in the transverse direction to the film web, whereby a beveled edge Q is formed. After the cutter 11 has reached the left edge of the film web, the cutting blade rotates again in a direction parallel to the longitudinal direction of the film web and a second edge 4c is cut. The cutting of a second edge is in the embodiment of FIG. 4 required because the cutter 11 can not cut the left edge of the film, as it would collide with the clips due to their position within the stretching unit (TDO). However, it is also conceivable that the cutting device 11 is driven such that it can pass through two adjacent clips. In such a case can be dispensed with the cutting of the second edge 4c.

The basis of FIG. 4 explained transfer of a leading portion 4'a of the film web 4 thus takes place in a leading foil portion 4'a, which is formed by the previously cut edge strip 4a and the now increasingly wider by the moved cutting tool film web section. In the schematic representation according to FIG. 4 Thus, the transfer and attachment of the leading film edge portion 4a in the region of the film portion 4'a at a time, in which the cutting device 11 already starting from the initial cutting position 11a in FIG. 4 lying on the right edge of the film web up to the in FIG. 4 shown further left position 11b is moved. In other words, usually with the cutting away from the in FIG. 4 The film edge portion lying on the right side of the film opposite the film side first started, in which case the thus formed triangular leading edge film 4'a is inserted into the film feeding device 10, which can then be moved along the transport rail under threading the film web in the downstream roller assembly.

Deviating from the illustration according to FIG. 4 However, the transfer of the film edge to the film feeding device can also take place, for example, at a position P2 in which only the edge strip 4a is formed and has not yet merged into the triangular-shaped widened film section 4'a. In this case, the separating cut would be to separate a further leading edge portion of the edge strip 4a at P'2, so that the film feeding device 10 over the edge strip and the subsequent subsequent triangular widening film section 4'a the subsequent film web 4a in the Can move roller assembly.

The second marginal strip is finally cut off by a further cutting element 12 on the left foil edge, as indicated in the position P2. The cutting element 12 is preferably also traversable in the transverse direction to the film web and may possibly also take on the right edge of the film, the longitudinal cutting of the film edge 4a, wherein the cutting device 11 is responsible in this case only for the transverse cutting of the film web. By the in FIG. 4 clarified process sequence, the automatic cutting of a transport edge strip and a beveled main foil is achieved. The edge strip with the subsequent chamfered portion can be threaded well into the roller assembly and the winder by means of the film retractor without the need for manual operator assistance. As a result, the startup time of the system can be shortened and the susceptibility of the system can be significantly reduced.

Based on FIG. 5 will be opposite FIG. 4 again modified cutting process explained.

FIG. 5 again shows a plan view of the film web 4 in the outlet region of the stretching unit 1, wherein a modification of the cutting process of FIG. 4 is shown. According to this embodiment, the cross-cutting of the film web takes place by a method of the cutting device obliquely to the film web (as indicated by the arrow 11 ''), in one direction, so that the cutting device 11, according to the method in an area beyond the Ausklupplinie K located. This can be done on the in FIG. 4 shown longitudinal section of a second edge strip 4c omitted be because the cutter can not collide with the clips and thus can completely separate the remaining film web 4b.

FIG. 6 shows a detail view of in FIG. 1 illustrated cross-cutting unit 6 of the edge strip. Here, a scenario is shown in which the gripping and transport device 10 is adjacent to the cutting unit 6. The film strip has already been inserted by an operator into the gripping and transporting device 10, wherein a closure device 13 indicated only schematically may be provided, which closes the gripping and transporting device. The closure device can in particular have manual, hydraulic, pneumatic or the like in order to close the grippers of the gripping and transport device. The front portion of the foil strip can then be cut off by means of a cutting element 14 provided on the cutting unit 6. This is followed by the transport of the edge strip by starting the film feeding device.

Deviating from the above-described manual transfer (which represents the simplest case), the transfer can also be semi-automatic or fully automatic.

The transfer can be effected, for example, by a suction belt, a simple belt located below the film, for example a double belt, which is arranged below and above the film, or else by other types Transport devices take place. Based on FIGS. 19A to 20B it should be an embodiment of a semi-automatic transfer will be explained in greater detail.

It is in Figure 19A in side view and in FIG. 19B in plan view an excerpt to the transfer device according to the invention shown.

It can be seen that, for example, a so-called belt conveyor 101 is provided which extends over the entire width of the film 4 or only a sufficient part width or consists of several each extending over a partial width individual and juxtaposed belt conveyor 100. These have a circumferential belt 103 which can be driven in rotation between two guide rollers 105. This belt conveyor is height adjustable in the embodiment shown, in the illustrated embodiment, a scissor lift 107 is provided.

In operation, this belt feeder (belt feeder) is raised by the scissor lift 107 to the film plane, to then promote the previously uncut film 4 out of the danger zone. After the illustrated edge trim section and the complementary cross section to be performed, an operator can then grasp the gate (ie the leading end of the film web) preferably at the described leading edge section 4'a or the leading film section 4'a located at the edge around this film section in the gripper Insert gripping and transport device.

Thereafter, the equipped with the gripper carriage of the film feeding device, for example, timed or after triggering a start button, etc. go to the film web thread into the following trigger stand. Then the belt conveyor is then returned to its in Figure 20A lowered position shown lowered. In this semi-automatic method, the in Figure 19A shown in side view operator only take the leading end of the film, perform a half pivotal movement to the right, then next to the side edge of the film web standing the leading end of the film 4'a or the leading edge portion 4a to introduce into the gripper of the gripping and transporting device. The car with the gripper is at this time in its starting position 111, as in FIGS. 19A and 19B is shown.

However, the takeover of the edge strip can also take place fully automatically near the deflection 1c of the treatment device or stretching device. For this purpose, the film feeding device moves directly to Ausklupplinie K and takes over the edge strip there. In the semiautomatic or automatic transfer of the film, the automatic cross-section for cutting the front end of the edge strip 4a is synchronized.

By the edge strip the transport of the entire film web is facilitated and accelerated and the risk of blocking the film web, which can occur when pulling through the roller assembly, is considerably reduced. Furthermore, the cutting of an edge strip always allows the same starting conditions and it is an automated transfer of the film to the film feeding device directly to the Ausklupplinie the treatment facility possible.

Based on FIGS. 7 to 11 is explained below, the further structure of the gripping and transporting device.

FIG. 7 shows a perspective view from below of the gripping and transporting device 10 used according to the invention, wherein it is movable on the transport rail 15. The gripping and transport device is designed as a movable carriage, which preferably has its own power supply 10b, the corresponding transport rollers (not from FIG. 7 visible) drives, which contact one side of the transport rail 15. The device has a gripper 10a, which has gripping arms which can be opened and closed by a corresponding mechanism and clamp the film edge strip. Various mechanisms for opening and closing the gripper located on the film loading device can be realized, for example in the form of toggle lever assemblies well known in the art, or in the form of pneumatic, hydraulic and / or electrical devices and the like.

The gripping and transport device 10 further comprises a pressing device 10f, which ensures the frictional engagement of the drive rollers of the gripping and transport device with the transport rail 15. Such a pressing device is also well known in the prior art and is in the embodiment of FIG. 7 designed as a spring lever, wherein the spring lever is guided over four rollers 101 on one side of the transport rail 15. The transport rail itself is further attached via a plurality of brackets 16 on one side of the roller assembly or the winding assembly.

FIG. 8 shows a further perspective view from above of the gripping and transport device 10 according to the invention, wherein the transport rail is not shown. Out

FIG. 8 In particular, it can be seen that the gripping and transport device (shown here) has two transport rollers 10c and 10d, which are driven by the drive unit (s) 10b. One or more of the drive rollers are provided with a surface coating with a high coefficient of friction to allow a good frictional engagement with the transport rail.

FIG. 9 shows a sectional view of the movable gripping and transporting device 10 of FIG. 7 , and along a plane perpendicular to the transport rail in the region of the bracket 16. The drive is designed as a DC or AC motor 10 g and connected to a planetary gear 10 h. The motor is preferably driven by accumulators 10o. The corresponding power transmission via the motor housing 10i, which is fixedly connected to the frame housing 10j, on a drive drum 10k, on which a molded part 10m is located. The drive drum 10k and the molding 10m constitute the transport roller 10c. The molded part 10m ensures the frictional engagement with the surface of the transport rail. The transport roller is mounted on ball bearings 101 and 10q. Furthermore, ball bearings 10n and roller bearings 10p are provided, wherein the roller bearings are in FIG. 7 stored rollers 101 store. The ball bearings 10n serve for laterally guiding the carriage on the transport rail 15.

In the FIGS. 7 to 9 shown drive device has a number of advantages. In particular, it has a compact size with high extraction torque. This is very important in the present invention because the drive device travels along small arc radii in a meandering guideway. By the internal engine of Drive device is achieved an improved center of gravity while reducing tilting moments. The transport rollers can also be quickly adapted for the respective requirements by changing the surface covering or surface profile and quickly replaced. By adjusting the spring force of the pressing device, the introduction of force in the frictional engagement direction is easily adjustable. Preferably, a control is integrated in the drive device, with the various operations can be controlled. In particular, the starting, the stopping, the stable pulling force and the torque can be adjusted.

The speed of the traveling carriage, i. the gripper and transport device movable along the transport rail correlates with the line speed of the stretching device and the roller speed on the take-off stand, wherein preferably the drive device for the film-feed device is set so that always passes over the gripped leading end of the film web to be pulled in and through the drive of the rollers of the take-off stand Tensile forces are exerted on the film web.

The transport rail is preferably made of standard semi-finished stainless steel material, so that the functionality remains guaranteed under aggressive environmental conditions. The gripper of the film feeding device has a large gripper opening and can optionally be equipped with a self-timer mechanism in case of overload.

In FIG. 10 an example of a possible construction of a gripper 10a is shown.

FIG. 10 shows a sectional view of the in FIG. 7 shown gripping device. The sectional view shows, in particular, a section through the transport roller 10d, so that the high-friction lining design (here as an example O-rings 10e in section) can be seen. Out FIG. 10 Furthermore, the structure of the gripper 10a is shown, which is constructed in the manner of a toggle joint. It is referred in this respect to known toggle and their operation. Such a gripper comprises an upper claw jaw 201 and a lower claw jaw 202, which hold the edge strip 4a of the film web. The clip jaws are each rotatably mounted on an upper jaw lever 203 and lower jaw lever 204. The jaw levers are in turn rotatably mounted at pivot points 206 and 207, respectively. So that a defined clamping force is exerted on the edge strip, a toggle lever 208 is biased by a spring (not shown). This spring acts here between the pivot point 206 of the upper jaw lever and the pivot point 207 of the lower jaw lever and can be preset by means of a set screw. By applying force to the toggle lever 208 in the directions indicated by the arrows, the gripper can be opened or closed. This can be done either manually by an operator or by a suitable opener and / or closing arrangement.

Out FIG. 10 It can also be seen that the plane of the film web coincides with the middle of the transport rail, so that the tilting moments on the drive unit are reduced by the film tension.

FIG. 11 shows a perspective view of the pressing device used in the gripping and transporting device 10 10f. By the pressing device is a molding or frictional engagement in the movement of the carriage within circular arcs of the transport rail compensated or maintained. For this purpose, the rollers 101 are used, which are tensioned by means of an energy accumulator in the form of springs 102 in the direction of the transport rollers of the film feeding device. The rollers 101 are each attached to rockers 103, which in turn are attached to bearing sleeves 104. The swings shown can perform independent movements. The force is applied via a rocker 104 which is attached to the rockers 105 via chain links. Further, located on the spring, a spring tensioner 106 for adjusting the tensile force.

FIG. 12A shows a perspective view of the transport rail 15 used in an embodiment of the invention FIG. 12B is a cross-sectional view of in FIG. 12A shown transport rail shown. It results in particular that in the embodiment shown next to the transport rail, a power guide rail 17 is attached, which is screwed to the brackets 16 of the transport rail. The current-carrying rail serves to supply energy to the drive motor of the film-feed device, which moves on the transport rail. For this purpose, printed conductors with sliding contacts are laid on the current-carrying rail. Preferably, the drive motor via accumulators (as in Figures 9 and 10 shown) are driven. The profile of the guide rail is assembled bumplessly from standard elements (straight lines, arches, different radii and angles) in order to allow rapid and cost-effective adaptation to different machine types.

In principle, it is possible that the gripping and transporting device 10 does not have its own drive, but is driven by means known from the prior art rope or chain hoists along the transport rail.

FIGS. 13A and 13B show two embodiments of known Wicklertypen 2. In the embodiment according to FIG. 13A the film web is guided above the winding rollers 8 and 9 by means of the film feeding device to a lower parking position P. Further, the cutting arm 7 is arranged for cutting the film web above the rollers. In contrast, in the winding device of FIG. 13B the film is guided below the winding rolls 8 and 9 in an upper parking position P by means of the film feed device 10. Further, the cutting arm is arranged below the winding rollers 8 and 9.

FIG. 14 shows a sectional view taken along the line II of FIG. 13A , In this case, it can be seen in particular that a part of the transport rail 15 is pivotably mounted on a pivot axis 18. The transport rail can be folded over the pivot axis upwards, as by phantom lines in FIG. 14 is indicated. Sense of pivoting is that the cutting arm 7 has access to the film web during the cutting process, because the access to the film web is normally blocked by the transport rail. The swinging in and out of the transport rail can be done automatically by an appropriate control. An enlarged view FIG. 14 to illustrate the pivotable rail section is in the detailed representation according to Figure 14A played.

FIGS. 15A to 15E show schematically the process of the submission process the film web to the winding roller 8 of the winding device. In the figures, the distance still to be covered by the gripping and transport device 10 is indicated in each case by dashed lines. In Figure 15A the situation is shown when the film feeding device just enters the winding device 2. It can be seen in particular that between winding roll 8 and 9 there is a sensor 20 and, near the scraping roller, an application device for adhesive 19. The sensor 20 detects when the film web passes over it and controls the spraying device 19 accordingly, as will be explained below. In FIG. 15B is the transport device 10 just above the winding roller 9. The sensor has not yet detected a film. In FIG. 15C Finally, the film feeding device 10 is in its parked position P. The guided by the film feeding device foil edge strip has been applied to the top of the two winding rollers 8 and 9. The sensor 20 detects the presence of the film web and controls the spray device 20, which applies adhesive to the film web. The adhesive serves to adhere the film web to the winding roll 8. The adhesive may be a liquid adhesive, adhesive beads or even water. When using an adhesive comes z. As a hot-melt adhesive based on PP into consideration. The point at which the adhesive is sprayed onto the film web, can be adjusted so that when the pier to the winding roller 8 reaches the optimum adhesion is guaranteed. If water is used as the adhesive agent, a larger spray area must be provided with respect to the adhesive, for which reason the spray device 19 has a plurality of spray nozzles. After completion of the spraying process, the film web is finally released by the gripping and transporting device and due to the adhesive, the film web conforms to the Wickerolle 8, as in Figure 15D is shown. FIG. 15E finally shows a scenario in which is rewound on a previously used scrap roll.

FIG. 16A shows in plan view a detailed view of the in the FIGS. 15A to 15E used spraying device and the adhesive field with overhead film web. When spraying is to pay attention to a precise timing synchronization of the spraying with the transport process of the film feeding device.

FIG. 17 shows a detailed view of the film feeding device 10 in the parking position P according to FIG. 13A , The film feeding device strikes in the parking position to a stopper 23. The opening of the film feeding device is effected, for example, by an opening wedge 22 through which, for example, the toggle lever of the gripper of the film retracting device is actuated and opens the gripper. It should be noted here that the transport rail does not necessarily have to end in the position P. In particular, it is also possible to form the transport rail as a closed circumferential path, so that the film feeding device can continue from the parking position to the starting position in the outlet region of the treatment device without the direction of travel having to be changed.

In principle, in the area of the winding tube, a manual, semiautomatic or automatic transfer of the film web 4 conveyed through the installation via the gripping and transporting device to the winding tube or a waste wrap can take place. The transfer preferably takes place at least on a winding roll 8 of the winding device 3.

Claims (42)

1. Process for processing a film web (4), which runs from a stretching apparatus (1), with the following steps:

   - cutting of the film web (4) in the longitudinal direction, forming a marginal strip (4a) and a main film web (4b) reduced by the width of the marginal strip (4a),

   - transfer of the marginal strip (4a, 4'a) to a movable gripper and conveyor device (10),

   - before, during and/or after transfer of the marginal strip (4a) to a movable gripper and conveyor device (10), separation of a leading section of the marginal strip (4a) and separation of the main film web (4b), wherein separation takes place completely or partially by cutting and also possibly by tearing,

   - movement of the gripper and conveyor device (10) along one side of a roller arrangement (2), threading the film web (4) into the roller arrangement (2),

   - movement of the gripper and conveyor device (10) along one side of a winding device (3) comprising at least one winding roller (8) up to a release or end position (P),

   - opening the gripper and conveyor device (10) in the end position (P) to release the marginal strip (4a), and

   - the cutting operation carried out in the film web (4) in the longitudinal direction to produce a marginal strip (4a) is performed in a section of the exit region of the stretching apparatus (1), where the clips (1a) belonging to the stretching apparatus (1) are still closed or just open and still firmly hold the film.
2. Process according to Claim 1, characterized in that after the marginal strip (4a) has been cut, a leading section of the main film web (4b) is cut off, by a separation cut being made from the long-side first edge of the main film web (4b) bordering the marginal strip (4a) up into the proximity of the opposite long-side second edge of the main film web (4b), and in that afterwards in the proximity of the second edge a further marginal strip (4c) is cut in the longitudinal direction of the film web (4), which is cut off before the film web (4) is fed into the roller arrangement (2).
3. Process according to Claim 2, characterized in that the further marginal strip (4c) is cut in a section of the exit region of the stretching apparatus (1), where the clips (1a) of the stretching apparatus (1) are not yet opened.
4. Process according to Claim 1, characterized in that the separation cut for separating the main film web (4b) takes place in such a manner that it is cut through or separated from a long-side first edge bordering the marginal strip (4a) of the main film web (4b) up to the opposite long-side edge of the main film web (4b).
5. Process according to Claim 4, characterized in that the separation cut for separating the main film web (4b) on the second edge of the main film web (4b) is performed on the so-called drive side in such a way that it ends between two adjacent clips (1a), not yet opened, of the stretching apparatus.
6. Process according to Claim 1 or 4, characterized in that the separation cut for separating a leading section of the main film web (4b) takes place at an acute angle to the pull direction of the film web (4).
7. Process according to any one of the preceding claims, characterized in that cutting of the marginal strip (4a) and/or separation of the main film web (4b) take place automatically with a cutting device (11), which can be moved in a controlled way.
8. Process according to any one of Claims 1 to 6, characterized in that the transversal cutting of the marginal strip (4a) and/or separation of the main film web (4b) take place manually.
9. Process according to any one of the preceding claims, characterized in that a leading part of the marginal strip (4a) is separated after or during transfer of the marginal strip (4a) to the gripper and conveyor device (10).
10. Process according to any one of Claims 1 to 9, characterized in that a section of the marginal strip (4a, 4'a) is automatically transferred to a film-drafting device with an associated gripper and conveyor device (10), so that the marginal strip (4a, 4'a) is fed into the roller arrangement (2).
11. Process according to any one of Claims 1 to 10, characterized in that the gripper and conveyor device (10) is moved up to the exit of the stretching apparatus (1) and there takes hold of the marginal strip (4a, 4'a) automatically or after an activation signal has been sent.
12. Process according to any one of Claims 1 to 9, characterized in that the marginal strip (4a) and/or a leading lateral film web section (4'a) are manually inserted into the gripper and conveyor device (10) and fixed and held by closing the gripper and conveyor device (10).
13. Process according to any one of Claims 1 to 10, ' characterized in that the edge section (4a) and/or a leading film web section (4'a) are transferred semi-automatically into the gripper and conveyor device (10), by the initially uncut film web (4) being removed by means of a conveyor device from the danger area of the stretching apparatus (1) and then transferred manually to the gripper and conveyor device (10) after the marginal strip has been cut and a transversal cut has been carried out.
14. Process according to any one of the preceding claims, characterized in that the film web (4), while the gripper and conveyor device (10) is moved along the winding device (3) is sprayed with adhesive means, in particular adhesive and/or water, or this adhesive is applied to the winding reel or the waste roller.
15. Process according to any one of the preceding claims, characterized in that the roller arrangement (2) and the winding device (3) are driven on a drive side and the gripper and conveyor device is moved on the side facing this.
16. Process according to any one of the preceding claims, characterized in that the gripper and conveyor device (10) after reaching the end position (P), is moved back to the handling device (1), in order to take hold of a new marginal strip (4a, 4'a).
17. Process according to any one of Claims 1 to 16, characterized in that the film web is transferred manually, semi-automatically or automatically to a winding reel or a waste roller for rolling the film web (4) on the at least one winding roller (8) of the winding device (3).
18. Device for processing a film web (4) running from a stretching apparatus (1), with the following features:

    - a cutting device (11) is provided for cutting the film web (4) in the longitudinal direction, forming a marginal strip (4a, 4'a) and a main film web (4b) reduced by the width of the marginal strip (4a, 4'a),

    - a movable gripper and conveyor device (10) with a gripper located thereon is provided, via which the marginal strip (4a) of the film web (4) and/or a leading edge of the film web (4) to be wound can be gripped at its boundary region, and via which the marginal strip (4a) and thus the film web (4) to be wound are movable on the opposite side to the drive side of the roller arrangement (2) along a rail arrangement (15) as far as a release and/or end position (4), wherein the gripper located on the gripper and conveyor device (10) in the release and/or end position (P) can be opened to release the gripped edge (4a), so that the film web (4) can be wound onto a winding roller (8) of a winding device (3),

    - the cutting device (11) is configured in this way or a second cutting device, in addition to the cutting device (11), is provided, via which a leading section of the film web (4) and of the main film web (4b) can be separated completely or partially from a following section of the film web (4b),

    - the cutting device (11) is arranged in the exit region of the stretching apparatus (1) and/or is movable there, and

    - the cutting device (11), is arranged and/or can be moved so that the cutting operation takes place in a section of the stretching apparatus (1), where the clips (1a) are still closed or just open.
19. Device according to Claim 18, characterized in that the cutting device (11) has a pivot axis (11a), via which the cutting angle of a cutting means (11b) of the cutting device (11) is adjustable related to the pull direction of the film web (4).
20. Device according to Claim 19, characterized in that the cutting means (11b) comprises a rotary blade, preferably with an integrated drive.
21. Device according to any one of Claims 18 to 20, characterized in that the cutting device (11) comprises a fixing arrangement (11c, 11d), which stabilizes the film web (4) during the cutting operation of the cutting device (11) and prevents uncontrolled tearing of the film (4) starting from the position of the cutting device (11) at least beyond the fixing arrangement (11c, 11d).
22. Device according to Claim 21, characterized in that the fixing arrangement consists of at least one pair of rollers, through which by producing a contact pressure the film web (4) to be cut is moved, before the film web (4) reaches the cutting position, wherein preferably at least one roller of the pair of rollers can be driven.
23. Device according to any one of Claims 18 to 22, characterized in that the cutting device (11) can be moved away over the film web (4), which at least in sections, is aligned at a sharp or acute angle to the pull direction of the film web (4).
24. Device according to any one of Claims 18 to 23, characterized in that the cutting device can be positioned in such a manner that in operation it cuts a further marginal strip (4c) running in the longitudinal direction in the edge of the remaining film web (4b) opposite the first marginal strip (4a)
25. Device according to any one of Claims 18 to 24, characterized in that a transfer device is provided to transfer the marginal strip (4a, 4'a) to the film-drafting device (10).
26. Device according to Claim 25, characterized in that the transfer device comprises a wedging and/or a suction device for conveying the film web (4) in a general horizontal direction.
27. Device according to Claim 25 or 26, characterized in that the transfer device partially comprises a suction belt device, a single belt device or a double belt device arranged partially above and partially underneath the film and taking up the film in the centre sandwich-fashion, via which the film web (4) can be conveyed further.
28. Device according to Claims 25, 26 or 27, characterized in that the transfer device consists of a belt feeder (111), which can be lifted via a jack device preferably in the form of a scissor jack (107) for conveying the film web (4) at least approximately up to the film plane and can be moved, preferably lowered, away from the film plane after the transfer has taken place.
29. Device according to any one of Claims 18 to 28, characterized in that the cutting device (11) is downstream to the transfer device in the conveyor direction.
30. Device according to any one of Claims 18 to 29, characterized in that a closing device (13) to close the gripper and conveyor device (10) and/or a cutting unit (14) to cut off a leading part of the marginal strip (4a) is provided at the position, where in operation the marginal strip (4a) is transferred to the film-drafting device (10).
31. Device according to any one of Claims 18 to 30, characterized in that the gripper and conveyor device (10) comprises a carriage driven electrically and/or mechanically with one or more transport rollers (10d, 10e), wherein the carriage can move on a guide rail (15), which extends from the exit region of the stretching apparatus (1) along one side of the roller arrangement (2) and one side of the winding device (3).
32. Device according to Claim 31, characterized in that the guide, rail (15) is arranged belt-shaped, preferably has a rectangular cross section and comprises, seen from the side, straight and/or curved rail sections, wherein the transport rollers (10d, 10e) and/or sliding bearing mechanisms provided of the gripper and conveyor device (10), configured in the form of a carriage, rest on the opposite large bearing surfaces formed in this way and on the narrower front ends formed on the left and on the right, via which the carriage-like gripper and conveyor device (10) is held captive and can be moved along the guide rail (15).
33. Device according to Claim 31 or 32, characterized in that the carriage comprises a drive unit (10b) to drive at least one transport roller (10d, 10e).
34. Device according to any one of Claims 31 to 33, characterized in that a current rail (17) is arranged next to the guide rail (15) to supply power to the drive unit (10b).
35. Device according to Claim 31 or 32, characterized in that a stationary driving device is provided, which is connected to the carriage, which is movable on the guide rail (15) by a pulling device, so that the carriage can be moved along the guide rail (15).
36. Device according to any one of Claims 31 to 35, characterized in that at least one of the transport rollers (10d, 10e) has frictional engagement means or positive engagement means on its surface.
37. Device according to any one of Claims 31 to 36, characterized in that the carriage comprises a hugger device (10f), with which the at least one transport roller (10d, 10e) is pressed against the guide rail (15).
38. Device according to any one of Claims 31 to 37, characterized in that a section of the guide rail (15) can be moved or pivoted out from the remaining section of the guide rail (15) and can be again moved or pivoted back, in particular within that region, where the cutting device is movable during the cutting operation of the film web (4).
39. Device according to any one of Claims 19 to 38, characterized in that an opening device (22) for automatic opening of the gripper located on the film-drafting device (10) is arranged in the end position (P) of the film-drafting device (10) .
40. Device according to any one of Claims 18 to 39, characterized in that a spraying device (19) is provided in the vicinity of the winding device (3), via which adhesive means triggered by a sensor and/or by the gripper and conveyor device (10) reaching a certain position, can be sprayed onto the film web (4).
41. Device according to Claim 40, characterized in that the spraying device is coupled with a detector or sensor facility (20), with which it can be recognized whether a film web (4) is at any place in the winding device (3).
42. Device for the production of wound film reels, with the following features:

    - comprising a stretching apparatus (1) for producing plastic film,

    - a pull roll device in the form of a roller arrangement (2) and

    - a winding device (3) for winding the film web (4) exiting the roller arrangement (2) onto a winding roller (8, 9),

    - characterized in that a device for processing a film web (4) according to any one of Claims 19 to 44 is also provided.

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