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EP1775378B1 - Transfer apparatus - Google Patents

Transfer apparatus Download PDF

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Publication number
EP1775378B1
EP1775378B1 EP06121707A EP06121707A EP1775378B1 EP 1775378 B1 EP1775378 B1 EP 1775378B1 EP 06121707 A EP06121707 A EP 06121707A EP 06121707 A EP06121707 A EP 06121707A EP 1775378 B1 EP1775378 B1 EP 1775378B1
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EP
European Patent Office
Prior art keywords
piston
transfer apparatus
cylinder
rope
suction head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06121707A
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German (de)
French (fr)
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EP1775378A1 (en
Inventor
Ansgar MÜLLER
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Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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Filing date
Publication date
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Publication of EP1775378A1 publication Critical patent/EP1775378A1/en
Application granted granted Critical
Publication of EP1775378B1 publication Critical patent/EP1775378B1/en
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00Other accessories for paper-making machines
    • D21G9/0063Devices for threading a web tail through a paper-making machine
    • D21G9/0072Devices for threading a web tail through a paper-making machine using at least one rope

Definitions

  • the invention relates to a device for transferring a strip of a material web within a machine for treating a material web, in particular fibrous web, in a cable cutter arranged outside the web travel path, formed at the beginning of a cable arrangement (see US-A-2004 07 95 06 ). It further relates to a machine for treating a material web, in particular fibrous web, with at least one such transfer device.
  • the material web to be treated may in particular be a paper, board or tissue web.
  • the relevant insertion strip eg paper strip
  • these are usually used Abstechblasrohre, Blastician and baffles.
  • Abstechblasrohre, Blastician and baffles The reliability with which the insertion strip can be introduced into such an external rope cutter, but now depends heavily on the basis weight of the material web, the machine speed and other parameters. In particular, the air nozzles or the flow rate must always be adapted again, for example, to the relevant paper parameters.
  • the likelihood that in these conventional systems of the lead-in strip actually gets into the rope scissors and is introduced in accordance with the cable arrangement in the desired manner in the treatment facility, is only about 50%. Consequently, the hitherto conventional systems can not be installed on the last drying cylinder as a rule, otherwise there is a risk that a large amount of shreds gets into the relevant drying group.
  • the invention has for its object to provide an improved transfer device and an improved machine of the type mentioned, in which the aforementioned problems are eliminated.
  • a possible reliable strip transfer between the relevant sections of the machine, such as paper machine, should be ensured.
  • this object is achieved according to the invention by a suction head and a guide device, via which the suction head is movable such that the web strip detected by the latter can be moved out of the web travel path and into the rope scissors.
  • the transfer device according to the invention is in principle also applicable in other sections of the relevant machine, e.g. Paper machine, can be used, for example, for transfer by coating units, etc.
  • the web strip is movable via the suction head out of the web travel path into a cable plane in which the cables of the cable arrangement are guided at least predominantly.
  • the rope scissors in this rope level in which the ropes of the cable arrangement are at least predominantly out.
  • the guide device comprises two linear guides pivotable relative to each other.
  • this guide device is preferably configured such that a first linear guide permits a linear movement of the second linear guide in a plane parallel to the cable plane and that the second linear guide, on which the suction head is mounted linearly displaceable relative to the first linear guide, preferably in a direction perpendicular to the cable plane Level is pivotable.
  • the guide device comprises as linear guides two relatively pivotable piston / cylinder assemblies.
  • the piston of a first of the two relatively pivotable piston / cylinder arrangements is expediently coupled to the cylinder of the second piston / cylinder arrangement and the piston of the second piston / cylinder arrangement with the suction head.
  • the cylinder of the first piston / cylinder arrangement preferably extends in a plane parallel to the rope plane.
  • the cylinder of the first piston / cylinder arrangement is advantageously aligned at least substantially vertically.
  • the second piston / cylinder arrangement is preferably pivotable relative to the first piston / cylinder arrangement in a plane perpendicular to the cable plane.
  • first piston / cylinder arrangement is designed without a piston rod and its piston is correspondingly coupled directly to the cylinder of the second piston / cylinder arrangement.
  • the second piston / cylinder arrangement may also be designed without a piston rod, in which case the piston thereof is correspondingly coupled directly to the suction head.
  • the web strip is thus preferably transferred via the second linear guide and the second piston / cylinder arrangement obliquely in the rope cutter or pivoted out of the web travel path in the cable plane.
  • the drive of the cylinders can also be effected rotationally by way of a longer lever.
  • the guide device is preferably pneumatically, hydraulically and / or electrically actuated.
  • the two piston / cylinder arrangements can thus be expediently formed in each case by a pneumatic or by a hydraulic unit or by an electrical unit.
  • the suction head is preferably acted upon via a hose or a pipe with negative pressure.
  • an ejector is advantageously provided.
  • the ejector is preferably pressure-actuated.
  • a vacuum pump may advantageously be provided to pressurize the suction head with negative pressure.
  • the suction head expediently has a rigid construction.
  • the suction head is at least partially made of sheet metal.
  • the inventive machine for treating a material web, in particular fibrous web is characterized in that it comprises at least one transfer device according to the invention.
  • the web strip to be transferred to the rope scissors is preferably removed from a drying cylinder.
  • the web strip to be transferred to the rope scissors can in particular be removed from the last drying cylinder of a region having only one row of drying cylinders.
  • the transfer device is preferably arranged below a scraper associated with the drying cylinder.
  • the suction head for taking over the web strip is advantageously movable to a position directly below the scraper.
  • the web strip to be transferred into the rope scissors is removed between a drying group with only one row of drying cylinders and a drying group with two rows of drying cylinders.
  • the web strip can thus be spent, for example, by means of an evacuated tube from the plane of the paper in the rope level.
  • the evacuated pipe can preferably be withdrawn pneumatically, hydraulically or electrically, whereby the web strip is drawn into the cable shears and detected by the latter.
  • the vacuum for the tube is preferably generated by an ejector, Alternatively, it can also be generated by a vacuum pump.
  • An ejector has the advantage that when properly selected, it will not cause any problems with scraps of paper and is also inexpensive. The higher air consumption is justifiable because the transfer times are relatively small.
  • the transfer device is arranged either under the scraper of the penultimate drying cylinder in the single-row region or directly to the group separation between the single-row and the double-row region.
  • the suction head of the web strip is sucked directly under the scraper, and he-is moved for example via two preferably rodless pneumatic cylinder in the direction of the rope scissors.
  • one of the two pneumatic cylinders of the suction head is moved from the web level strip in the rope level, while the other pneumatic cylinder ensures the transport in the direction of rope scissors.
  • the suction head can be very simple because it does not have to run around curves. Preferred is a sheet metal construction.
  • Fig. 1 and 2 show a part of a dryer section of a paper machine with associated transfer device 10.
  • the viewed in the web running direction L rear guide roller 16 is fed via a pulley 18, a first cable 20 and a pulley 22, a second cable 24.
  • the two ropes 20, 24 run together in the region of the guide roller 16 to form a rope scissors 26, which forms the beginning of a cable arrangement.
  • the rope cutter 26 is in the present case, as well as the at least predominant part of the remaining rope assembly in a rope level outside the path of the material to be treated web, here eg paper web.
  • a foundation rail 28 can be seen on which, for example, the axes of the guide rollers 14, 16 are supported.
  • the drying cylinder 12 is associated with a bar-like scraper 30 in the lower region, which serves to strip a web strip from the drying cylinder 12.
  • the web strip to be transferred to the rope scissors 26 can be removed, in particular, from the last drying cylinder of a region having only one row of drying cylinders.
  • the transfer of the web strip in the rope cutter 26 serving transfer device 10 is disposed below the dryer cylinder 12 associated scraper 30.
  • the rope cutter 26 is outside the path of the paper web, that is arranged outside the plane of the paper.
  • the transfer device 10 now comprises a suction head 32 and a guide device 34, via which the suction head 32 is movable such that the web strip detected by the latter can be moved out of the web travel path and into the wire rope shears.
  • the web strip is movable via the suction head 32 out of the web travel path into the cable plane, in which the cables 20, 24 are guided at least predominantly.
  • the rope scissors 26 is in this rope level.
  • the guide device 34 comprises two pivotable relative to each other linear guides in the form of two relatively pivotable piston / cylinder assemblies 36, 38th
  • the first piston / cylinder arrangement 36 allows a linear movement of the second piston / cylinder arrangement 38 in a plane parallel to the cable plane, while the second piston / cylinder arrangement 38, on which the suction head 32 is mounted linearly displaceable relative to the first piston / cylinder arrangement 36 is preferably pivotable in a plane perpendicular to the cable plane.
  • the piston of the first 36 of the two relatively pivotable piston / cylinder assemblies 36, 38 is coupled to the cylinder of the second piston / cylinder assembly 38 and the piston of the second piston / cylinder assembly 38 to the suction head 32.
  • the cylinder of the first Kotben / cylinder arrangement 36 extends in a plane parallel to the cable plane in the present case. In the illustrated embodiment, it extends at least substantially vertically, ie substantially perpendicular to the fundamental rail 28, to which it may be attached.
  • the two piston / cylinder assemblies 36, 38 are each carried out without a piston rod. Accordingly, the piston of the first piston / cylinder arrangement 36 is directly connected to the cylinder of the second piston / cylinder arrangement 38 and the piston of the second piston / cylinder arrangement 38 coupled directly to the suction head 32.
  • the guide device 34 which here comprises, for example, the two piston / cylinder arrangements 36, 38, can in particular be pneumatically, hydraulically and / or electrically actuated.
  • the two piston / cylinder assemblies 26, 28 may thus be formed in particular by a pneumatic or by a hydraulic unit.
  • the suction head 32 is in the present case via a hose 40 (see. Fig. 1 ) can be acted upon by negative pressure.
  • the suction head 32 for example, be subjected to a pipe or the like with negative pressure.
  • an ejector 42 is provided in the present case. As based on the Fig. 1 can be seen, this ejector 42 is provided in the present case on the suction head 32 remote from the end of the hose 40. This ejector 42 is expediently pneumatically operated.
  • a vacuum pump may in particular also be provided for acting on the suction head 32 with negative pressure.
  • the suction head 32 expediently has a rigid structure, wherein it may be made at least partially of sheet metal.
  • the drying cylinder 12 may, for example, be the last drying cylinder of a region having only one row of drying cylinders.
  • the transfer device 10 is disposed below the dryer cylinder 12 associated scraper 30.
  • the suction head 32 via the guide means 34 for taking over the web strip in a position directly below the scraper 30 is movable.
  • the transfer device 10 can be arranged in particular under the scraper of the penultimate drying cylinder in the single-row area. In particular, however, it is also conceivable to arrange this transfer device 10 directly to the group separation between the single-row and the double-row region.
  • the web strip is absorbed directly under the scraper and then moved over the two preferably rodless cylinder, preferably pneumatic cylinder in the direction of rope scissors.
  • the one pneumatic cylinder moves the suction head from the strip or belt level in the cable level, while the other pneumatic cylinder ensures transport in the direction of rope scissors.
  • the suction head can be very simple because it does not have to run around curves.
  • a sheet metal construction is provided.

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  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Seal Device For Vehicle (AREA)
  • Massaging Devices (AREA)

Abstract

Apparatus for transferring a web strip within a web treatment machine into a rope cutter (26) outside the travel path of the web comprises a suction head (32) and a guide (34) for moving the suction head so that the strip grasped by the suction head is moved away from the travel path and into the cutter. An independent claim is also included for a web treatment machine comprising transfer apparatus as above.

Description

Die Erfindung betrifft eine Vorrichtung zum Überführen eines Streifens einer Materialbahn innerhalb einer Maschine zur Behandlung einer Materialbahn, insbesondere Faserstoffbahn, in eine außerhalb des Bahnlaufweges angeordnete, am Anfang einer Seilanordnung gebildete Seilschere (siehe US-A-2004 07 95 06 ). Sie betrifft ferner eine Maschine zur Behandlung einer Materialbahn, insbesondere Faserstoffbahn, mit wenigstens einer solchen Überführvorrichtung. Bei der zu behandelnden Materialbahn kann es sich insbesondere um eine Papier-, Karton- oder Tissuebahn handeln.The invention relates to a device for transferring a strip of a material web within a machine for treating a material web, in particular fibrous web, in a cable cutter arranged outside the web travel path, formed at the beginning of a cable arrangement (see US-A-2004 07 95 06 ). It further relates to a machine for treating a material web, in particular fibrous web, with at least one such transfer device. The material web to be treated may in particular be a paper, board or tissue web.

Bisher wird der betreffende Einführstreifen, z.B. Papierstreifen, in eine in Querrichtung, d.h. quer zur Bahnlaufrichtung betrachtet außen liegende Seilschere eingeschossen. Dazu werden in der Regel Abstechblasrohre, Blastische und Leitbleche eingesetzt. Die Zuverlässigkeit, mit der der Einführstreifen in eine solche außen liegende Seilschere eingebracht werden kann, hängt nun aber stark vom Flächengewicht der Materialbahn, der Maschinengeschwindigkeit und weiteren Parametern ab. So müssen insbesondere die Luftdüsen bzw. die Durchflussmenge stets von neuem beispielsweise an die betreffenden Papierparameter angepasst werden. Die Wahrscheinlichkeit dafür, dass bei diesen herkömmlichen Systemen der Einführstreifen tatsächlich in die Seilschere gelangt und entsprechend über die Seilanordnung in der gewünschten Weise in die Behandlungseinrichtung eingeführt wird, liegt lediglich bei etwa 50 %. Demzufolge können die bisher üblichen Systeme in der Regel nicht am letzten Trockenzylinder installiert werden, da andernfalls die Gefahr besteht, dass eine große Menge an Fetzen in die betreffende Trockengruppe gelangt.So far, the relevant insertion strip, eg paper strip, in a transversely, ie viewed transversely to the web running direction outer rope scissors shot. These are usually used Abstechblasrohre, Blastische and baffles. The reliability with which the insertion strip can be introduced into such an external rope cutter, but now depends heavily on the basis weight of the material web, the machine speed and other parameters. In particular, the air nozzles or the flow rate must always be adapted again, for example, to the relevant paper parameters. The likelihood that in these conventional systems of the lead-in strip actually gets into the rope scissors and is introduced in accordance with the cable arrangement in the desired manner in the treatment facility, is only about 50%. Consequently, the hitherto conventional systems can not be installed on the last drying cylinder as a rule, otherwise there is a risk that a large amount of shreds gets into the relevant drying group.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Überführvorrichtung sowie eine verbesserte Maschine der eingangs genannten Art zu schaffen, bei denen die zuvor genannten Probleme beseitigt sind. Dabei soll insbesondere eine möglichst zuverlässige Streifenüberführung zwischen den betreffenden Abschnitten der Maschine, beispielsweise Papiermaschine, sichergestellt sein.The invention has for its object to provide an improved transfer device and an improved machine of the type mentioned, in which the aforementioned problems are eliminated. In particular, a possible reliable strip transfer between the relevant sections of the machine, such as paper machine, should be ensured.

Bezüglich der Überführvorrichtung wird diese Aufgabe erfindungsgemäß gelöst durch einen Saugkopf und eine Führungseinrichtung, über die der Saugkopf so bewegbar ist, dass der von diesem erfasste Bahnstreifen aus dem Bahnlaufweg heraus und in die Seilschere hinein bewegbar ist.With regard to the transfer device, this object is achieved according to the invention by a suction head and a guide device, via which the suction head is movable such that the web strip detected by the latter can be moved out of the web travel path and into the rope scissors.

Aufgrund dieser Ausbildung ist eine in hohem Maße zuverlässige Überführung der Materialbahn zwischen verschiedenen Abschnitten der betreffenden Maschine, z.B. Papiermaschine, sichergestellt. So ist beispielsweise ein sicheres Überführen zwischen einer mit Luftdruck überführenden einreihigen Trockengruppe und einer mit Seilen überführenden zweireihigen Trockengruppe, beispielsweise bei so genannten "Drystar"-Umbauten möglich. Die erfindungsgemäße Überführvorrichtung ist grundsätzlich jedoch auch in anderen Abschnitten der betreffenden Maschine, z.B. Papiermaschine, einsetzbar, beispielsweise zum Überführen durch Streichaggregate, usw.Due to this design, a highly reliable transfer of the web between different sections of the machine concerned, e.g. Paper machine, ensured. Thus, for example, a safe transfer between an air-pressure-transferring single-row dryer group and a ropes-transferring two-row dryer group, for example in so-called "Drystar" structures, is possible. However, the transfer device according to the invention is in principle also applicable in other sections of the relevant machine, e.g. Paper machine, can be used, for example, for transfer by coating units, etc.

Bevorzugt ist der Bahnstreifen über den Saugkopf aus dem Bahnlaufweg heraus in eine Seilebene bewegbar, in der die Seile der Seilanordnung zumindest überwiegend geführt sind.Preferably, the web strip is movable via the suction head out of the web travel path into a cable plane in which the cables of the cable arrangement are guided at least predominantly.

Vorteilhafterweise liegt auch die Seilschere in dieser Seilebene, in der die Seile der Seilanordnung zumindest überwiegend geführt sind.Advantageously, the rope scissors in this rope level, in which the ropes of the cable arrangement are at least predominantly out.

Bei einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Überführvorrichtung umfasst die Führungseinrichtung zwei relativ zueinander verschwenkbare Linearführungen.In a preferred practical embodiment of the transfer device according to the invention, the guide device comprises two linear guides pivotable relative to each other.

Dabei ist diese Führungseinrichtung bevorzug so ausgestaltet, dass eine erste Linearführung eine lineare Bewegung der zweiten Linearführung in einer zur Seilebene parallelen Ebene zulässt und dass die zweite Linearführung, an der der Saugkopf linear verschiebbar gelagert ist, relativ zur ersten Linearführung vorzugsweise in einer zur Seilebene senkrechten Ebene verschwenkbar ist.In this case, this guide device is preferably configured such that a first linear guide permits a linear movement of the second linear guide in a plane parallel to the cable plane and that the second linear guide, on which the suction head is mounted linearly displaceable relative to the first linear guide, preferably in a direction perpendicular to the cable plane Level is pivotable.

Vorteilhafterweise umfasst die Führungseinrichtung als Linearführungen zwei relativ zueinander verschwenkbare Kolben/Zylinder-Anordnungen.Advantageously, the guide device comprises as linear guides two relatively pivotable piston / cylinder assemblies.

Dabei ist zweckmäßigerweise der Kolben einer ersten der beiden relativ zueinander verschwenkbaren Kolben/Zylinder-Anordnungen mit dem Zylinder der zweiten Kolben/Zylinder-Anordnung und der Kolben der zweiten Kolben/ZylinderAnordnung mit dem Saugkopf gekoppelt.In this case, the piston of a first of the two relatively pivotable piston / cylinder arrangements is expediently coupled to the cylinder of the second piston / cylinder arrangement and the piston of the second piston / cylinder arrangement with the suction head.

Bevorzugt erstreckt sich der Zylinder der ersten Kolben/Zylinder-Anordnung in einer zur Seilebene parallelen Ebene. Dabei ist der Zylinder der ersten Kolben/Zylinder-Anordnung vorteilhafterweise zumindest im Wesentlichen vertikal ausgerichtet.The cylinder of the first piston / cylinder arrangement preferably extends in a plane parallel to the rope plane. In this case, the cylinder of the first piston / cylinder arrangement is advantageously aligned at least substantially vertically.

Die zweite Kolben/Zylinder-Anordnung ist relativ zur ersten Kolben/ZylinderAnordnung bevorzugt in einer zur Seilebene senkrechten Ebene verschwenkbar.The second piston / cylinder arrangement is preferably pivotable relative to the first piston / cylinder arrangement in a plane perpendicular to the cable plane.

Von Vorteil ist insbesondere auch, wenn die erste Kolben/Zylinder-Anordnung ohne Kolbenstange ausgeführt und deren Kolben entsprechend direkt mit dem Zylinder der zweiten Kolben/Zylinder-Anordnung gekoppelt ist.It is also particularly advantageous if the first piston / cylinder arrangement is designed without a piston rod and its piston is correspondingly coupled directly to the cylinder of the second piston / cylinder arrangement.

Alternativ oder zusätzlich kann zweckmäßigerweise auch die zweite Kolben/Zylinder-Anordnung ohne Kolbenstange ausgeführt sein, wobei in diesem Fall deren Kolben entsprechend direkt mit dem Saugkopf gekoppelt ist.Alternatively or additionally, expediently, the second piston / cylinder arrangement may also be designed without a piston rod, in which case the piston thereof is correspondingly coupled directly to the suction head.

Der Bahnstreifen wird über die zweite Linearführung bzw. die zweite Kolben/Zylinder-Anordnung also bevorzugt schräg in die Seilschere überführt bzw. aus dem Bahnlaufweg heraus in die Seilebene verschwenkt.The web strip is thus preferably transferred via the second linear guide and the second piston / cylinder arrangement obliquely in the rope cutter or pivoted out of the web travel path in the cable plane.

In Maschinenbereichen mit genügend großem Bauraum, z.B. innerhalb einer Streichmasehine kann anstelle der Linearführung auch der Antrieb der Zylinder über einen längeren Hebel rotatorisch erfolgen.In machine areas with a sufficiently large installation space, e.g. Within a stringing machine, instead of the linear guide, the drive of the cylinders can also be effected rotationally by way of a longer lever.

Zur entsprechenden Verlagerung des Saugkopfes ist die Führungseinrichtung bevorzugt pneumatisch, hydraulisch und/oder elektrisch betätigbar.For the corresponding displacement of the suction head, the guide device is preferably pneumatically, hydraulically and / or electrically actuated.

Die beiden Kolben/Zylinder-Anordnungen können also zweckmäßigerweise jeweils durch eine pneumatische oder durch eine hydraulische Einheit oder durch eine elektrische Einheit gebildet sein.The two piston / cylinder arrangements can thus be expediently formed in each case by a pneumatic or by a hydraulic unit or by an electrical unit.

Der Saugkopf ist vorzugsweise über einen Schlauch oder ein Rohr mit Unterdruck beaufschlagbar.The suction head is preferably acted upon via a hose or a pipe with negative pressure.

Zur Beaufschlagung des Saugkopfes mit Unterdruck ist vorteilhafterweise ein Ejektor vorgesehen. Dabei ist der Ejektor vorzugsweise druckbetätigt.To act on the suction head with negative pressure, an ejector is advantageously provided. In this case, the ejector is preferably pressure-actuated.

Alternativ oder zusätzlich kann zur Beaufschlagung des Saugkopfes mit Unterdruck vorteilhafterweise auch eine Vakuumpumpe vorgesehen sein.Alternatively or additionally, a vacuum pump may advantageously be provided to pressurize the suction head with negative pressure.

Der Saugkopf besitzt zweckmäßigerweise einen starren Aufbau.The suction head expediently has a rigid construction.

Bei einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Überführvorrichtung ist der Saugkopf zumindest teilweise aus Blech gefertigt.In a preferred practical embodiment of the transfer device according to the invention, the suction head is at least partially made of sheet metal.

Die erfindungsgemäße Maschine zur Behandlung einer Materialbahn, insbesondere Faserstoffbahn; zeichnet sich dadurch aus, dass sie wenigstens eine erfindungsgemäße Überführvorrichtung umfasst.The inventive machine for treating a material web, in particular fibrous web; is characterized in that it comprises at least one transfer device according to the invention.

Dabei wird der in die Seilschere zu überführende Bahnstreifen vorzugsweise von einem Trockenzylinder abgenommen.The web strip to be transferred to the rope scissors is preferably removed from a drying cylinder.

Hier kann der in die Seilschere zu überführende Bahnstreifen insbesondere von dem letzten Trockenzylinder eines nur eine Trockenzylinderreihe aufweisenden Bereichs abgenommen werden.Here, the web strip to be transferred to the rope scissors can in particular be removed from the last drying cylinder of a region having only one row of drying cylinders.

Bevorzugt ist die Überführvorrichtung unterhalb eines dem Trockenzylinder zugeordneten Schabers angeordnet. Dabei ist der Saugkopf zur Übernahme des Bahnstreifens vorteilhafterweise in eine Position direkt unterhalb des Schabers bewegbar.The transfer device is preferably arranged below a scraper associated with the drying cylinder. In this case, the suction head for taking over the web strip is advantageously movable to a position directly below the scraper.

Bei einer weiteren zweckmäßigen Ausführungsform der erfindungsgemäßen Maschine wird der in die Seilschere zu überführende Bahnstreifen zwischen einer Trockengruppe mit nur einer Trockenzylinderreihe und einer Trockengruppe mit zwei Trockenzylinderreihen abgenommen.In a further expedient embodiment of the machine according to the invention, the web strip to be transferred into the rope scissors is removed between a drying group with only one row of drying cylinders and a drying group with two rows of drying cylinders.

Der Bahnstreifen kann also beispielsweise mittels eines besaugten Rohres von der Papierebene in die Seilebene verbracht werden. Dazu kann das besaugte Rohr vorzugsweise pneumatisch, hydraulisch oder elektrisch zurückgezogen werden, wodurch der Bahnstreifen in die Seilschere eingezogen und von dieser erfasst wird. Daraufhin reißt der Bahnstreifen, und er wird von den Seilen mitgerissen. Das Vakuum für das Rohr wird vorzugsweise von einem Ejektor erzeugt, kann alternativ aber auch durch eine Vakuumpumpe erzeugt werden. Ein Ejektor bringt den Vorteil mit sich, dass er bei richtiger Auswahl keine Probleme hinsichtlich Papierfetzen mit sich bringt und zudem kostengünstig ist. Der höhere Luftverbrauch ist vertretbar, da die Überführzeiten relativ klein sind.The web strip can thus be spent, for example, by means of an evacuated tube from the plane of the paper in the rope level. For this purpose, the evacuated pipe can preferably be withdrawn pneumatically, hydraulically or electrically, whereby the web strip is drawn into the cable shears and detected by the latter. As a result, the web strip breaks and it is carried along by the ropes. The vacuum for the tube is preferably generated by an ejector, Alternatively, it can also be generated by a vacuum pump. An ejector has the advantage that when properly selected, it will not cause any problems with scraps of paper and is also inexpensive. The higher air consumption is justifiable because the transfer times are relatively small.

Vorteilhafterweise ist die Überführvorrichtung entweder unter dem Schaber des vorletzten Trockenzylinders im einreihigen Bereich angeordnet oder direkt an der Gruppentrennung zwischen dem einreihigen und dem zweireihigen Bereich. Mittels des Saugkopfes wird der Bahnstreifen direkt unter dem Schaber aufgesaugt, und er-wird beispielsweise über zwei vorzugsweise kolbenstangenlose Pneumatikzylinder in Richtung der Seilschere bewegt. Mittels eines der beiden Pneumatikzylinder wird der Saugkopf aus der Bahnstreifenebene in die Seilebene bewegt, während der andere Pneumatikzylinder für den Transport in Richtung Seilschere sorgt. Sobald das Papier von der Seilschere erfasst wird, wird der Bahnstreifen oder Bändel abgerissen und von dem Seil mitgenommen. Der Saugkopf kann sehr einfach ausgeführt sein, da er nicht um Kurven laufen muss. Bevorzugt ist eine Blechkonstruktion.Advantageously, the transfer device is arranged either under the scraper of the penultimate drying cylinder in the single-row region or directly to the group separation between the single-row and the double-row region. By means of the suction head of the web strip is sucked directly under the scraper, and he-is moved for example via two preferably rodless pneumatic cylinder in the direction of the rope scissors. By means of one of the two pneumatic cylinders of the suction head is moved from the web level strip in the rope level, while the other pneumatic cylinder ensures the transport in the direction of rope scissors. As soon as the paper is caught by the rope cutter, the web strip or ribbon is torn off and taken along by the rope. The suction head can be very simple because it does not have to run around curves. Preferred is a sheet metal construction.

Der Erfindung wird im Folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert; in dieser zeigen:

Fig. 1
eine schematische Seitenansicht eines Teils einer Trockenpartie einer Papiermaschine mit zugeordneter Überführvorrichtung und
Fig. 2
eine perspektivische Darstellung des Trockenpartieabschnittes gemäß Fig. 1.
The invention will be explained in more detail below with reference to an embodiment with reference to the drawing; in this show:
Fig. 1
a schematic side view of a portion of a dryer section of a paper machine with associated transfer device and
Fig. 2
a perspective view of the Trockenpartieabschnittes according to Fig. 1 ,

Die Fig. 1 und 2 zeigen einen Teil einer Trockenpartie einer Papiermaschine mit zugeordneter Überführvorrichtung 10. Es sind ein oben liegender Trockenzylinder 12 und zwei Leitwalzen 14, 16 zu erkennen, die jeweils beispielsweise durch eine so genannte Duostabilisatorwalze gebildet sein können.The Fig. 1 and 2 show a part of a dryer section of a paper machine with associated transfer device 10. There are an overhead drying cylinder 12 and two guide rollers 14, 16 can be seen, each of which may be formed for example by a so-called Duostabilisatorwalze.

Der in Bahnlaufrichtung L betrachtet hinteren Leitwalze 16 wird über eine Seilrolle 18 ein erstes Seil 20 und über eine Seilrolle 22 ein zweites Seil 24 zugeführt.The viewed in the web running direction L rear guide roller 16 is fed via a pulley 18, a first cable 20 and a pulley 22, a second cable 24.

Wie insbesondere anhand der Fig. 1 zu erkennen ist, laufen die beiden Seile 20, 24 im Bereich der Leitwalze 16 unter Bildung einer Seilschere 26 zusammen, die den Anfang einer Seilanordnung bildet. Die Seilschere 26 liegt im vorliegenden Fall ebenso wie der zumindest überwiegende Teil der restlichen Seilanordnung in einer Seilebene außerhalb des Laufweges der zu behandelnden Materialbahn, hier z.B. Papierbahn.As in particular on the basis of Fig. 1 can be seen, the two ropes 20, 24 run together in the region of the guide roller 16 to form a rope scissors 26, which forms the beginning of a cable arrangement. The rope cutter 26 is in the present case, as well as the at least predominant part of the remaining rope assembly in a rope level outside the path of the material to be treated web, here eg paper web.

In den Fig. 1 und 2 ist überdies eine Fundamentschiene 28 zu erkennen, auf der z.B. die Achsen der Leitwalzen 14, 16 abgestützt sind.In the Fig. 1 and 2 In addition, a foundation rail 28 can be seen on which, for example, the axes of the guide rollers 14, 16 are supported.

Dem Trockenzylinder 12 ist im unteren Bereich ein balkenartiger Schaber 30 zugeordnet, der dazu dient, einen Bahnstreifen vom Trockenzylinder 12 abzustreifen.The drying cylinder 12 is associated with a bar-like scraper 30 in the lower region, which serves to strip a web strip from the drying cylinder 12.

Dabei kann der in die Seilschere 26 zu überführende Bahnstreifen insbesondere von dem letzten Trockenzylinder eines nur eine Trockenzylinderreihe aufweisenden Bereichs abgenommen werden.In this case, the web strip to be transferred to the rope scissors 26 can be removed, in particular, from the last drying cylinder of a region having only one row of drying cylinders.

Wie anhand der Fig. 1 und 2 zu erkennen ist, ist die der Überführung des Bahnstreifens in die Seilschere 26 dienende Überführvorrichtung 10 unterhalb des dem Trockenzylinder 12 zugeordneten Schabers 30 angeordnet.As based on the Fig. 1 and 2 can be seen, the transfer of the web strip in the rope cutter 26 serving transfer device 10 is disposed below the dryer cylinder 12 associated scraper 30.

Wie bereits erwähnt, ist die Seilschere 26 außerhalb des Laufweges der Papierbahn, d.h. außerhalb der Papierebene angeordnet.As already mentioned, the rope cutter 26 is outside the path of the paper web, that is arranged outside the plane of the paper.

Die Überführvorrichtung 10 umfasst nun einen Saugkopf 32 sowie eine Führungseinrichtung 34, über die der Saugkopf 32 so bewegbar ist, dass der von diesem erfasste Bahnstreifen aus dem Bahnlaufweg heraus und in die Seilschere hinein bewegbar ist.The transfer device 10 now comprises a suction head 32 and a guide device 34, via which the suction head 32 is movable such that the web strip detected by the latter can be moved out of the web travel path and into the wire rope shears.

Dabei ist der Bahnstreifen über den Saugkopf 32 aus dem Bahnlaufweg heraus in die Seilebene bewegbar, in der die Seile 20, 24 zumindest überwiegend geführt sind. Im vorliegenden Fall liegt auch die Seilschere 26 in dieser Seilebene.In this case, the web strip is movable via the suction head 32 out of the web travel path into the cable plane, in which the cables 20, 24 are guided at least predominantly. In the present case, the rope scissors 26 is in this rope level.

Die Führungseinrichtung 34 umfasst zwei relativ zueinander verschwenkbare Linearführungen in Form von zwei relativ zueinander verschwenkbaren Kolben/Zylinder-Anordnungen 36, 38.The guide device 34 comprises two pivotable relative to each other linear guides in the form of two relatively pivotable piston / cylinder assemblies 36, 38th

Dabei lässt die erste Kolben/Zylinder-Anordnung 36 eine lineare Bewegung der zweiten Kolben/Zylinder-Anordnung 38 in einer zur Seilebene parallelen Ebene zu, während die zweite Kolben/Zylinder-Anordnung 38, an der der Saugkopf 32 linear verschiebbar gelagert ist, relativ zur ersten Kolben/Zylinder-Anordnung 36 vorzugsweise in einer zur Seilebene senkrechten Ebene verschwenkbar ist.In this case, the first piston / cylinder arrangement 36 allows a linear movement of the second piston / cylinder arrangement 38 in a plane parallel to the cable plane, while the second piston / cylinder arrangement 38, on which the suction head 32 is mounted linearly displaceable relative to the first piston / cylinder arrangement 36 is preferably pivotable in a plane perpendicular to the cable plane.

Beim vorliegenden Ausführungsbeispiel ist der Kolben der ersten 36 der beiden relativ zueinander verschwenkbaren Kolben/Zylinder-Anordnungen 36, 38 mit dem Zylinder der zweiten Kolben/Zylinder-Anordnung 38 und der Kolben der zweiten Kolben/Zylinder-Anordnung 38 mit dem Saugkopf 32 gekoppelt. Dabei erstreckt sich im vorliegenden Fall der Zylinder der ersten Kotben/Zylinder -Anordnung 36 in einer zur Seilebene parallelen Ebene. Bei der dargestellten Ausführungsform erstreckt er sich zumindest im Wesentlichen vertikal, d.h. im Wesentlichen senkrecht zur Fundamentalschiene 28, an der er befestigt sein kann. Wie insbesondere anhand der Fig. 2 zu erkennen ist, ist die zweite Kolben/Zylinder-Anordnung 38 relativ zur ersten Kolben/Zylinder-Anordnung 36 insbesondere in einer zur Seilebene senkrechten Ebene verschwenkbar.In the present embodiment, the piston of the first 36 of the two relatively pivotable piston / cylinder assemblies 36, 38 is coupled to the cylinder of the second piston / cylinder assembly 38 and the piston of the second piston / cylinder assembly 38 to the suction head 32. In this case, the cylinder of the first Kotben / cylinder arrangement 36 extends in a plane parallel to the cable plane in the present case. In the illustrated embodiment, it extends at least substantially vertically, ie substantially perpendicular to the fundamental rail 28, to which it may be attached. As in particular on the basis of Fig. 2 can be seen, is the second piston / cylinder assembly 38th pivotable relative to the first piston / cylinder arrangement 36, in particular in a plane perpendicular to the cable plane.

Im vorliegenden Fall sind die beiden Kolben/Zylinder-Anordnungen 36, 38 jeweils ohne Kolbenstange ausgeführt Entsprechend ist der Kolben der ersten Kolben/Zylinder-Anordnung 36 direkt mit dem Zylinder der zweiten Kolben/ZylinderAnordnung 38 und der Kolben der zweiten Kolben/Zylinder-Anordnung 38 direkt mit dem Saugkopf 32 gekoppelt.In the present case, the two piston / cylinder assemblies 36, 38 are each carried out without a piston rod. Accordingly, the piston of the first piston / cylinder arrangement 36 is directly connected to the cylinder of the second piston / cylinder arrangement 38 and the piston of the second piston / cylinder arrangement 38 coupled directly to the suction head 32.

Während der Bahnstreifen über die zweite Kolben/Zylinder-Anordnung 38 schräg in die Seilebene bewegt wird, wird er über die Kolben/Zylinder-Anordnung 36 so bewegt, dass er sich in der Seilschere 26 verfängt.While the web strip is moved obliquely into the rope plane via the second piston / cylinder arrangement 38, it is moved via the piston / cylinder arrangement 36 in such a way that it is caught in the rope scissors 26.

Zur entsprechenden Verlagerung des Saugkopfes 26 kann die hier beispielsweise die beiden Kolben/Zylinder-Anordnungen 36, 38 umfassende Führungseinrichtung 34 insbesondere pneumatisch, hydraulisch und/oder elektrisch betätigbar sein. Die beiden Kolben/Zylinder-Anordnungen 26, 28 können also insbesondere jeweils durch eine pneumatische oder durch eine hydraulische Einheit gebildet sein.For the corresponding displacement of the suction head 26, the guide device 34, which here comprises, for example, the two piston / cylinder arrangements 36, 38, can in particular be pneumatically, hydraulically and / or electrically actuated. The two piston / cylinder assemblies 26, 28 may thus be formed in particular by a pneumatic or by a hydraulic unit.

Der Saugkopf 32 ist im vorliegenden Fall über einen Schlauch 40 (vgl. Fig. 1) mit Unterdruck beaufschlagbar. Grundsätzlich kann der Saugkopf 32 beispielsweise auch über ein Rohr oder dergleichen mit Unterdruck beaufschlagt sein.The suction head 32 is in the present case via a hose 40 (see. Fig. 1 ) can be acted upon by negative pressure. In principle, the suction head 32, for example, be subjected to a pipe or the like with negative pressure.

Zur Beaufschlagung des Saugkopfes 32 mit Unterdruck ist im vorliegenden Fall ein Ejektor 42 vorgesehen. Wie anhand der Fig. 1 zu erkennen ist, ist dieser Ejektor 42 im vorliegenden Fall am dem Saugkopf 32 abgewandten Ende des Schlauches 40 vorgesehen. Dieser Ejektor 42 ist zweckmäßigerweise druckluftbetätigt.To act on the suction head 32 with negative pressure, an ejector 42 is provided in the present case. As based on the Fig. 1 can be seen, this ejector 42 is provided in the present case on the suction head 32 remote from the end of the hose 40. This ejector 42 is expediently pneumatically operated.

Alternativ oder zusätzlich kann zur Beaufschlagung des Saugkopfes 32 mit Unterdruck insbesondere auch eine Vakuumpumpe vorgesehen sein.Alternatively or additionally, a vacuum pump may in particular also be provided for acting on the suction head 32 with negative pressure.

Der Saugkopf 32 besitzt zweckmäßigerweise einen starren Aufbau, wobei er zumindest teilweise aus Blech gefertigt sein kann.The suction head 32 expediently has a rigid structure, wherein it may be made at least partially of sheet metal.

Bei dem Trockenzylinder 12 kann es sich beispielsweise um den letzten Trockenzylinder eines nur eine Trockenzylinderreihe aufweisenden Bereichs handeln.The drying cylinder 12 may, for example, be the last drying cylinder of a region having only one row of drying cylinders.

Wie anhand der Fig. 1 und 2 zu erkennen ist, ist die Überführvorrichtung 10 unterhalb des dem Trockenzylinder 12 zugeordneten Schabers 30 angeordnet. Dabei ist der Saugkopf 32 über die Führungseinrichtung 34 zur Übernahme des Bahnstreifens in eine Position direkt unterhalb des Schabers 30 bewegbar.As based on the Fig. 1 and 2 can be seen, the transfer device 10 is disposed below the dryer cylinder 12 associated scraper 30. In this case, the suction head 32 via the guide means 34 for taking over the web strip in a position directly below the scraper 30 is movable.

Wie bereits erwähnt, kann die Überführvorrichtung 10 insbesondere unter dem Schaber des vorletzten Trockenzylinders im einreihigen Bereich angeordnet sein. Es ist insbesondere jedoch auch denkbar, diese Überführvorrichtung 10 direkt an der Gruppentrennung zwischen dem einreihigen und dem zweireihigen Bereich anzuordnen.As already mentioned, the transfer device 10 can be arranged in particular under the scraper of the penultimate drying cylinder in the single-row area. In particular, however, it is also conceivable to arrange this transfer device 10 directly to the group separation between the single-row and the double-row region.

Der Bahnstreifen wird direkt unter dem Schaber aufgesaugt und anschließend über die beiden vorzugsweise kolbenstangenlosen Zylinder, vorzugsweise Pneumatikzylinder, in Richtung Seilschere bewegt. Der eine Pneumatikzylinder bewegt den Saugkopf aus der Streifen- oder Bändelebene in die Seilebene, während der andere Pneumatikzylinder für einen Transport in Richtung Seilschere sorgt.The web strip is absorbed directly under the scraper and then moved over the two preferably rodless cylinder, preferably pneumatic cylinder in the direction of rope scissors. The one pneumatic cylinder moves the suction head from the strip or belt level in the cable level, while the other pneumatic cylinder ensures transport in the direction of rope scissors.

Sobald das Papier von der Seilschere erfasst wird, wird der Bahnstreifen bzw. Bändel abgerissen und von den Seilen mitgenommen.As soon as the paper is caught by the rope scissors, the web strip is torn off and taken away by the ropes.

Der Saugkopf kann sehr einfach ausgeführt sein, da er nicht um Kurven laufen muss. Bevorzugt ist eine Blechkonstruktion vorgesehen.The suction head can be very simple because it does not have to run around curves. Preferably, a sheet metal construction is provided.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
ÜberführvorrichtungTransfer device
1212
Trockenzylinderdrying cylinders
1414
Leitwalzeguide roll
1616
Leitwalzeguide roll
1818
Seilrollepulley
2020
Seilrope
2222
Seilrollepulley
2424
Seilrope
2626
Seilscherecable Cutter
2828
Fundamentalschienefundamental rail
3030
Schaberscraper
3232
Saugkopfsuction head
3434
Führungseinrichtungguide means
3636
Linearführung, Kolben/Zylinder-EinheitLinear guide, piston / cylinder unit
3838
Linearführung, Kolben/Zylinder-EinheitLinear guide, piston / cylinder unit
4040
Schlauchtube
4242
Ejektorejector
LL
BahnlaufrichtungWeb direction

Claims (27)

  1. Apparatus (10) for transferring a strip of material web within a machine for treating the material web, in particular a fibrous web, into a rope pinch (26) arranged outside the web running path and formed at the start of a rope arrangement,
    characterized by
    a suction head (32) and a guide device (34), via which the suction head (32) can be moved in such a way that the web strip gripped by the latter can be moved out of the web running path and into the rope pinch (26).
  2. Transfer apparatus according to Claim 1,
    characterized in that
    the web strip can be moved via the suction head (32) out of the web running path into a rope plane in which the ropes (20, 24) of the rope arrangement are at least predominantly guided.
  3. Transfer apparatus according to Claim 1 or 2,
    characterized in that
    the rope pinch (26) lies in the rope plane in which the ropes (20, 24) of the rope arrangement are at least predominantly guided.
  4. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the guide device (34) comprises two linear guides (36, 38) that can be pivoted relative to each other.
  5. Transfer apparatus according to Claim 4,
    characterized in that
    a first linear guide (36) permits a linear movement of the second linear guide (38) in a plane parallel to the rope plane, and in that the second linear guide (38), on which the suction head (32) is mounted such that it can be displaced linearly, can be pivoted relative to the first linear guide (36), preferably in a plane perpendicular to the rope plane.
  6. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the guide device comprises two piston/cylinder arrangements (36, 38) that can be pivoted relative to each other.
  7. Transfer apparatus according to Claim 6,
    characterized in that
    the piston of a first (36) of the two piston/cylinder arrangements (36, 38) that can be pivoted relative to each other is coupled to the cylinder of the second piston/cylinder arrangement (38), and the piston of the second piston/cylinder arrangement (38) is coupled to the suction head (32).
  8. Transfer apparatus according to Claim 7,
    characterized in that
    the cylinder of the first piston/cylinder arrangement (36) extends in a plane parallel to the rope plane.
  9. Transfer apparatus according to Claim 8,
    characterized in that
    the cylinder of the first piston/cylinder arrangement (36) is aligned at least substantially vertically.
  10. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the second piston/cylinder arrangement (38) can be pivoted relative to the first piston/cylinder arrangement (36), preferably in a plane perpendicular to the rope plane.
  11. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the first piston/cylinder arrangement (36) is implemented without a piston rod and its piston is accordingly coupled directly to the cylinder of the second piston/cylinder arrangement (38).
  12. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the second piston/cylinder arrangement (38) is implemented without a piston rod and its piston is accordingly coupled directly to the suction head (32).
  13. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the web strip is transferred obliquely into the rope pinch via the second linear guide or the second piston/cylinder arrangement (38).
  14. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the guide device (34) can be actuated pneumatically, hydraulically and/or electrically for the appropriate displacement of the suction head (32).
  15. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the two piston/cylinder arrangements (36, 38) are in each case formed by a pneumatic or by a hydraulic unit or can be replaced by an electric unit.
  16. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the suction head (32) can have vacuum applied to it via a hose (40) or a pipe.
  17. Transfer apparatus according to one of the preceding claims,
    characterized in that
    in order to apply vacuum to the suction head (32), an ejector (42) is provided.
  18. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the ejector (42) is actuated by compressed air.
  19. Transfer apparatus according to one of the preceding claims,
    characterized in that
    in order to apply vacuum to the suction head (32), a vacuum pump is provided.
  20. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the suction head (32) has a rigid structure.
  21. Transfer apparatus according to one of the preceding claims,
    characterized in that
    the suction head (32) is at least partly fabricated from sheet metal.
  22. Machine for treating a material web, in particular a fibrous web, comprising at least one transfer apparatus (10) according to one of the preceding claims.
  23. Machine according to Claim 22,
    characterized in that
    the web strip to be transferred into the rope pinch (26) is taken off a drying cylinder (12).
  24. Machine according to Claim 23,
    characterized in that
    the web strip to be transferred into the rope pinch (26) is taken off the last drying cylinder (12) of an area having only one row of drying cylinders.
  25. Machine according to Claim 23 or 24,
    characterized in that
    the transfer apparatus (10) is arranged underneath a doctor (30) assigned to the drying cylinder (12).
  26. Machine according to Claim 25,
    characterized in that
    the suction head (32) can be moved into a position directly underneath the doctor (30) in order to accept the web strip.
  27. Machine according to one of the preceding claims,
    characterized in that
    the web strip to be transferred into the rope pinch (26) is taken off between a drying group having only one row of drying cylinders and a drying group having two rows of drying cylinders.
EP06121707A 2005-10-14 2006-10-04 Transfer apparatus Not-in-force EP1775378B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005049170A DE102005049170A1 (en) 2005-10-14 2005-10-14 Transfer device

Publications (2)

Publication Number Publication Date
EP1775378A1 EP1775378A1 (en) 2007-04-18
EP1775378B1 true EP1775378B1 (en) 2011-01-12

Family

ID=37607328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06121707A Not-in-force EP1775378B1 (en) 2005-10-14 2006-10-04 Transfer apparatus

Country Status (3)

Country Link
EP (1) EP1775378B1 (en)
AT (1) ATE495302T1 (en)
DE (2) DE102005049170A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI112677B (en) * 2002-02-25 2003-12-31 Metso Paper Inc Method and apparatus for feeding a feeding tip, especially in a paper machine
GB2388105B (en) * 2002-04-09 2005-03-30 Aylesford Newsprint Ltd Device for directing an advancing web
US6946059B2 (en) * 2002-10-23 2005-09-20 Voith Paper Patent Gmbh Threading arm assembly for a paper machine

Also Published As

Publication number Publication date
ATE495302T1 (en) 2011-01-15
DE502006008697D1 (en) 2011-02-24
DE102005049170A1 (en) 2007-04-19
EP1775378A1 (en) 2007-04-18

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