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EP1775378B1 - Appareil de transfert - Google Patents

Appareil de transfert 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
Authority
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
Other languages
German (de)
English (en)
Other versions
EP1775378A1 (fr
Inventor
Ansgar MÜLLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1775378A1 publication Critical patent/EP1775378A1/fr
Application granted granted Critical
Publication of EP1775378B1 publication Critical patent/EP1775378B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • D21G9/0072—Devices 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.

Landscapes

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

Claims (27)

  1. Appareil (10) pour le transfert d'un ruban d'une bande de matière à l'intérieur d'une machine pour le traitement d'une bande de matière, en particulier d'une bande de matière fibreuse, dans une cisaille à câbles (26) formée au commencement d'un agencement de câbles et disposée à l'extérieur de la trajectoire de la bande, caractérisé par une tête aspirante (32) et un dispositif de guidage (34), au moyen duquel la tête aspirante (32) est déplaçable de telle manière que le ruban de bande saisi par celle-ci puisse être retiré hors de la trajectoire de la bande et introduit dans la cisaille à câbles (26).
  2. Appareil de transfert selon la revendication 1, caractérisé en ce que le ruban de bande est déplaçable au moyen de la tête aspirante (32) hors de la trajectoire de la bande dans un plan de câbles, dans lequel les câbles (20, 24) de l'agencement de câbles sont guidés au moins de façon prépondérante.
  3. Appareil de transfert selon la revendication 1 ou 2, caractérisé en ce que la cisaille à câbles (26) se trouve dans le plan de câbles, dans lequel les câbles (20, 24) de l'agencement de câbles sont guidés au moins de façon prépondérante.
  4. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de guidage (34) comprend deux guidages linéaires (36, 38) pouvant pivoter l'un par rapport à l'autre.
  5. Appareil de transfert selon la revendication 4, caractérisé en ce qu'un premier guidage linéaire (36) permet un mouvement linéaire du deuxième guidage linéaire (38) dans un plan parallèle au plan des câbles et en ce que le deuxième guidage linéaire (38), sur lequel la tête aspirante (32) est montée de façon déplaçable linéairement, peut pivoter par rapport au premier guidage linéaire (36), de préférence dans un plan perpendiculaire au plan des câbles.
  6. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de guidage comprend deux dispositifs à piston-cylindre (36, 38) pouvant pivoter l'un par rapport à l'autre.
  7. Appareil de transfert selon la revendication 6, caractérisé en ce que le piston d'un premier (36) des deux dispositifs à piston-cylindre (36, 38) pouvant pivoter l'un par rapport à l'autre est couplé au cylindre du deuxième dispositif à piston-cylindre (38) et le piston du deuxième dispositif à piston-cylindre (38) est couplé à la tête aspirante (32).
  8. Appareil de transfert selon la revendication 7, caractérisé en ce que le cylindre du premier dispositif à piston-cylindre (36) s'étend dans un plan parallèle au plan des câbles.
  9. Appareil de transfert selon la revendication 8, caractérisé en ce que le cylindre du premier dispositif à piston-cylindre (36) est orienté au moins essentiellement en direction verticale.
  10. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième dispositif à piston-cylindre (38) peut pivoter par rapport au premier dispositif à piston-cylindre (36), de préférence dans un plan perpendiculaire au plan des câbles.
  11. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier dispositif à piston-cylindre (36) est réalisé sans tige de piston et son piston est couplé de manière correspondante directement au cylindre du deuxième dispositif à piston-cylindre (38).
  12. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième dispositif à piston-cylindre (38) est réalisé sans tige de piston et son piston est couplé de manière correspondante directement à la tête aspirante (32).
  13. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le ruban de bande est transféré en oblique dans la cisaille à câbles au moyen du deuxième guidage linéaire ou du deuxième dispositif à piston-cylindre (38).
  14. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de guidage (34) peut être actionné de façon pneumatique, hydraulique et/ou électrique pour le déplacement correspondant de la tête aspirante (32).
  15. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que les deux dispositifs à piston-cylindre (36, 38) sont formés respectivement par une unité pneumatique ou par une unité hydraulique ou ils peuvent être remplacés par une unité électrique.
  16. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que la tête aspirante (32) peut être mise sous dépression via un tuyau souple (40) ou un tube.
  17. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu un éjecteur (42) pour soumettre la tête aspirante (32) à une dépression.
  18. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que l'éjecteur (42) est actionné à l'air comprimé.
  19. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu une pompe à vide pour soumettre la tête aspirante (32) à une dépression.
  20. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que la tête aspirante (32) présente une structure rigide.
  21. Appareil de transfert selon l'une quelconque des revendications précédentes, caractérisé en ce que la tête aspirante (32) est fabriquée au moins partiellement en tôle.
  22. Machine pour le traitement d'une bande de matière, en particulier d'une bande de matière fibreuse, comportant au moins un appareil de transfert (10) selon l'une quelconque des revendications précédentes.
  23. Machine selon la revendication 22, caractérisée en ce que le ruban de bande à transférer dans la cisaille à câbles (26) est prélevé d'un cylindre de séchage (12).
  24. Machine selon la revendication 23, caractérisée en ce que le ruban de bande à transférer dans la cisaille à câbles (26) est prélevé du dernier cylindre de séchage (12) d'une section ne présentant qu'une rangée de cylindres de séchage.
  25. Machine selon la revendication 23 ou 24, caractérisée en ce que l'appareil de transfert (10) est disposé en dessous d'un racloir (30) associé au cylindre de séchage (12).
  26. Machine selon la revendication 25, caractérisée en ce que la tête aspirante (32) est déplaçable dans une position située directement en dessous du racloir (30) afin de reprendre le ruban de bande.
  27. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que le ruban de bande à transférer dans la cisaille à câbles (26) est prélevé entre un groupe de séchage ne comportant qu'une rangée de cylindres de séchage et un groupe de séchage comportant deux rangées de cylindres de séchage.
EP06121707A 2005-10-14 2006-10-04 Appareil de transfert Not-in-force EP1775378B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005049170A DE102005049170A1 (de) 2005-10-14 2005-10-14 Überführvorrichtung

Publications (2)

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

Family

ID=37607328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06121707A Not-in-force EP1775378B1 (fr) 2005-10-14 2006-10-04 Appareil de transfert

Country Status (3)

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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI112677B (fi) * 2002-02-25 2003-12-31 Metso Paper Inc Menetelmä ja laite päänvientinauhan viemisessä erityisesti paperikoneessa
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 (de) 2011-01-15
DE502006008697D1 (de) 2011-02-24
DE102005049170A1 (de) 2007-04-19
EP1775378A1 (fr) 2007-04-18

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