EP3215324B1 - Air guide plate for leading away an edge strip of a material web, method for leading away an edge strip of the material web, and use of the air guide plate and of the method - Google Patents

Air guide plate for leading away an edge strip of a material web, method for leading away an edge strip of the material web, and use of the air guide plate and of the method Download PDF

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Publication number
EP3215324B1
EP3215324B1 EP15775459.9A EP15775459A EP3215324B1 EP 3215324 B1 EP3215324 B1 EP 3215324B1 EP 15775459 A EP15775459 A EP 15775459A EP 3215324 B1 EP3215324 B1 EP 3215324B1
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EP
European Patent Office
Prior art keywords
edge
strip
machine
material web
guide plate
Prior art date
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Not-in-force
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EP15775459.9A
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German (de)
French (fr)
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EP3215324A1 (en
Inventor
Michael Lohrmann
Daniel Kather
Malte Müller
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP3215324A1 publication Critical patent/EP3215324A1/en
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Publication of EP3215324B1 publication Critical patent/EP3215324B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/006—Cutting the edges of the paper-web
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0068—Trimming and removing web edges

Definitions

  • the present invention relates to an air guide plate for removing an edge strip of a running, flat material web, a method for removing an edge strip of the material web and the use of the air baffle and the method for discharging an edge strip.
  • an edge strip is usually separated on both sides of the material web. This separation takes place, for example, to obtain an exact width of the material web to produce well-defined edges of the material web in order to achieve uniform properties and conditions across the width of the material web or the cross profile and to ensure a quiet machine operation for production-technical reasons. So that the edge strips separated from the continuous, flat material web do not run along with the finished material web and, if necessary, are wound up with the manufactured finished product, the edge strips are usually cut off and removed continuously.
  • compressed air-pressurized nozzle (s), so-called knock-down nozzle (s) are used in the prior art as a tee.
  • discharged edge strips are treated as valuable raw material and returned to the production process.
  • Discharge devices for removal Edge strips of a continuous, flat material web, in particular of tissue, paper, cardboard, cardboard, foil or textile are known in the art. As discharge devices, for example (discharge) funnels with or without baffle are known. In addition, vacuum devices and compressed air devices, in particular blowing nozzles and fans are additionally used to guide the edge strip.
  • edge-strip conveying systems include vacuum systems, transport fan systems and injector systems.
  • baffles and methods for removing an edge strip of a running, flat material web are still in need of improvement and often have the disadvantage that when removing an insufficient separation between separated edge strips and the web takes place, so that the edge strip is again arranged on the web and with the Material web is carried.
  • the prior art air baffles and methods for discharging an edge strip do not sufficiently and reliably stabilize the edge strip to ensure good guidance of the edge strip.
  • the known baffles and methods for discharging are not easy, fast and reproducibly adjustable to different edge strip widths, production speeds of the webs and basis weights of the edge strip.
  • known discharge devices and methods due to lack of and / or inaccurate Adjustments energy, especially energy unneeded compressed air systems, wasted.
  • the present invention is therefore based on the object to provide an improved air baffle and an improved method for removing a running, flat web of material, in particular of tissue, paper, cardboard, cardboard, foil or textile, in which the aforementioned disadvantages are avoided.
  • the air guide plate and the method for discharging a material web a reliable and reproducible removal of an edge strip at all basis weights and production speeds of the material web is to be made possible and rearrangement of the edge strip to the material web can be prevented.
  • the air baffle should be easy, fast and reproducible adjustable. In particular, production losses or variations in quality of the material web produced, which can be attributed to the air baffle and the process, should be largely avoided.
  • the air guide plate according to the invention for discharging an edge strip in a machine for producing a running, flat material web, in particular from tissue, paper, cardboard, foil or textile, has at least one air intake gap between the one or more blower nozzle (s) and the at least one a edge strip-outlet sheet on.
  • the invention is therefore an air guide for discharging an edge strip in a machine for producing a running, flat web of material, in particular tissue, paper, cardboard, film or textile with an edge strip surface having an edge strip length in the machine longitudinal direction and an edge strip width in the cross-machine direction the terms machine longitudinal direction and machine transverse direction are in each case based on the machine, a marginal edge outer edge which terminates in the cross-machine direction a side edge of the continuous, flat material web to the outside and a marginal inner edge, which is arranged in the direction of the center of the current, flat material web, comprising at least one edge strip inlet plate, one or more outlet nozzle (s) and at least one edge strip outlet plate, wherein the one or more outlet nozzle (s) between the we at least one edge strip inlet plate and the at least one edge strip outlet plate is / are arranged and the air guide plate has a Lucasleitblechaußenkante on the side facing away from the center of the material web side, wherein between the one or more Ausblasdüse
  • Another object of the invention is the use of the air baffle in a machine for producing flat webs, in particular selected from a tissue machine, a paper machine, a board machine, a corrugated base paper machine, a coating machine, a laminating machine, a coating machine, a film machine, a textile machine, a Sliver machine and combinations thereof.
  • Another object of the invention is the use of the method for removing an edge strip of a running, flat web in the production of a sheet material in particular selected from the production of paper, cardboard, corrugated cardboard, cardboard, graphic papers, packaging papers, tissue paper, especially tissue, laminated Paper, films, textile webs, fibrous webs and combinations thereof.
  • continuous motion is understood to be production speed, in particular a manufactured web of tissue, paper, cardboard, paperboard, laminated paper, films and combinations thereof.
  • the thicknesses are determined according to EN ISO 12625-3: 2014 in the range of 50 microns to 1000 microns.
  • material web is understood to be a flat web produced on a web production machine.
  • material web is understood to mean a manufactured sheet of tissue, paper, cardboard, paperboard, laminated paper, film and combinations thereof.
  • air intake gap is understood to mean an opening through which ambient air can pass, in particular can be sucked in, understood.
  • an air intake nip may be selected from a slot, a hole, a nozzle, and combinations thereof.
  • the at least one breather nozzle is at an included angle or the plurality of breather nozzles at one or more included angles to the airfoil outer edge are in the range of 0 ° to 45 °, preferably in the range of 5 to 20 ° arranged and point in the direction of the air guide plate outer edge.
  • one or more of a fluid flow, in particular a compressed air flow, acted upon blowing nozzle (s) is arranged.
  • an axis of rotation is arranged in the region of the edge strip inlet plate in the cross-machine direction, about which the air baffle plate is pivotably arranged.
  • the air baffle is arranged so pivotable about the axis of rotation in the cross-machine direction that an edge strip entering the air baffle at an angle in the range of ⁇ to 2 ⁇ , preferably in the range of ⁇ to 3 / 2 ⁇ based on the incoming edge strip is diverted.
  • At least one blade element is arranged at the edge strip outlet side of the at least one edge strip outlet plate, which forms a shear gap with an oppositely arranged counter blade when the baffle is pivoted.
  • a knife element is selected from an edge, a point, a blade, a blade, a point, a perforation, a corrugation, and combinations thereof.
  • a counterknife is understood to mean a knife which is arranged such that one or more counterknives with one or more knife elements form a shearing device for severing the edge strip of the material web.
  • a counter knife is selected from an edge, a point, a blade, a blade, a point, a perforation, a corrugation, and combinations thereof.
  • the severing means the division of a web of a marginal strip in the direction of the edge strip width in the cross-machine direction.
  • the at least one discharge nozzle acted upon by the fluid flow flows at an included angle or the applied multiple discharge nozzles flow in one or more enclosed angles to the air guide sheet outer edge in the region from 0 ° to 45 °, preferably in the range of 5 to 20 °.
  • the one or more ejection nozzle (s) in the region of the edge strip is acted upon by the fluid flow over the edge strip width or narrower than the edge strip width.
  • the removal in step d) of the edge strip provided in step a) is introduced into at least one removal device, with a pivoting movement of the at least one air baffle provided in step b).
  • the pivoting movement of the at least one air baffle provided in step b) is performed with a pivoting device selected from an electric pivoting device, a pneumatic swivel device, a hydraulic swivel device, and combinations thereof.
  • an electric swivel device is understood to mean an electrically operated swivel device.
  • a pneumatic swivel device is understood to mean a pneumatically operated swivel device.
  • a hydraulic swivel device is understood to mean a hydraulically operated swivel device.
  • the pivoting movement of the at least one air baffle provided in step b) is at an angle in the range of ⁇ to 2 ⁇ , preferably in the range of ⁇ to 3 / 2 ⁇ , based on the incoming edge strip, performed.
  • the edge strip is severed during the pivoting movement by a shearing stress between at least one edge strip outlet plate arranged at least one knife element and an oppositely disposed counter knife.
  • step e) introduced in step d) in at least one discharge device led edge strip in at least one pulper, in particular a pulper.
  • the introduction of the severed edge strip is carried out in combination with a stripping device.
  • FIG. 1 an embodiment of an air baffle 1 according to the invention is shown schematically as a cross section along the machine longitudinal direction MD.
  • the air baffle 1 comprises a marginal strip inlet plate 6, one or more outlet nozzle (s) 71, 72, 73, 74, 75, an air inlet gap 10 and a marginal strip outlet plate 8.
  • the edge strip inlet plate 6, the one or more outlet nozzle (n ) 71, 72, 73, 74, 75, the air intake gap 10 and the edge strip outlet plate 8 are arranged along a longitudinal extension axis L.
  • the transverse profile of the air baffle 1 may be similar to a wing transverse profile.
  • An incoming edge strip 2 is passed over the marginal strip inlet plate 6, by a fluid flow S, which flows from the one or more Ausblasdüse (s) 71, 72, 73, 74, 75 flows passed to the air inlet gap 10 and in Direction of the edge strip outlet plate 8 out.
  • the air baffle 1 has a rotation axis D about which it is pivotable. In the illustrated position, the air guide plate 1 is pivoted into a discharge device 13. A pivot radius of the air guide plate 1 is shown as a dashed line.
  • the edge strip 2 is guided by the air guide plate 1 in the discharge device 13 in a direction of travel V.
  • a counter blade 12 is disposed on the discharge device 13. When swinging the air guide plate 1, a shear gap is formed in opposite of the blade member 11 and the counter blade 12, in which the edge strip 2 is severed. From the discharge device 13, the edge strip 2 is passed into a pulper 14.
  • FIG. 2 is a section of a plan view of the air baffle 1 according to an embodiment of the invention with a arranged above the baffle 1 material web 3 shown. From the material web 3, the edge strip 2 was separated.
  • the edge strip 2 has an edge strip width B in the cross-machine direction CD, a marginal edge outer edge 4, an edge strip inner edge 5 and is guided in the direction of travel V.
  • the marginal edge-outer edge 4 closes in the cross-machine direction CD a side edge of the running, flat material web 3 to the outside.
  • the edge strip inner edge 5 is arranged in the direction of the center of the running, flat material web 3.
  • the edge strip 2 is arranged such that it enters via the edge strip inlet plate 6 of the air baffle 1, via the discharge nozzle (s) 71, 72, 73, 74, 75, the air intake gap 10 and the edge strip outlet plate 8 is passed.
  • the edge strip inlet plate 6, the Ausblasdüse (s) 71, 72, 73, 74, 75, the air inlet gap 10 and the edge strip outlet plate 8 are arranged in the longitudinal direction axis L.
  • the air guide plate 1 has an air guide plate outer edge 9, which is arranged on the side facing away from the center of the material web 3 side.
  • the exhaust nozzle (s) 71, 72, 73, 74, 75 point in the direction of the air guide sheet outer edge 9 and are at an included angle a, which between the at least one of the respective Ausblasdüse (s) 71, 72, 73, 74, 75 and the air guide sheet outer edge 9 forms, arranged.
  • FIG. 3 schematically is a cross section of the air guide plate 1 along the machine longitudinal direction MD according to an embodiment of the invention according to FIG. 1 shown with different angular positions of the air baffle 1.
  • the Ausblasdüse (s) 71, 72, 73, 74, 75, the air inlet gap 10 and the edge strip outlet plate 8 are arranged.
  • the air guide plate 1 is arranged pivotably about the axis of rotation D and can be pivoted, for example, from a position of the air guide plate 1 shown in dashed lines into a position of the air guide plate 1 shown by solid lines.
  • the direction of the longitudinal extension axis L is different in the position shown in dashed lines to the position of the air guide plate 1 shown by solid lines.
  • the knife element 11 is shown as an optional embodiment.
  • the edge strip 2 Upon pivoting of the air baffle 1 from the dashed line in the position shown by a solid line, the edge strip 2 is guided through the air baffle 1 on the counter knife 12, wherein the edge strip 2 is severed.
  • the edge strip 2 is discharged in the direction of travel V into the discharge device in the position of the air guide plate 1 shown in solid lines.
  • the air guide plate according to the invention was tested as a fixed and pivotable air baffle.
  • the air baffle was mounted below the material web, in particular a paper web.
  • the air baffle had between one and ten exhaust nozzles and the air intake gap between the exhaust nozzles and the edge strip exhaust plate had a length in the direction of the longitudinal axis in the range of 0.2 to 5 mm.
  • the exhaust nozzles were aligned in the direction of the air guide sheet outer edge and arranged at an included angle of 0 ° to 45 °, preferably from 5 to 20 ° to the air guide sheet outer edge.
  • the edge strip was introduced from the air baffle in a discharge funnel or a discharge channel.
  • nozzles such as so-called Vits nozzles were arranged in part experiments.
  • pressure-tested knock-down nozzles were also tested as a separator for the edge strip for knocking off the edge strip.
  • the surfaces of the air baffle according to the invention were provided with a non-stick coating, in particular a TerraDry GT3 / CT3 from Voith Paper Onsite Services, Workshop, Parhalahti, Finland.
  • the non-stick coating was made of polytetrafluoroethylene, in particular Teflon.
  • the inventive air baffle made of plastic, such as PE-UHMW was prepared with or without glass ball additive.

Description

HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION

Die vorliegende Erfindung betrifft ein Luftleitblech zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn, ein Verfahren zum Abführen eines Randstreifens der Materialbahn und die Verwendung des Luftleitblechs und des Verfahrens zum Abführen eines Randstreifens.The present invention relates to an air guide plate for removing an edge strip of a running, flat material web, a method for removing an edge strip of the material web and the use of the air baffle and the method for discharging an edge strip.

STAND DER TECHNIKSTATE OF THE ART

Bei der Herstellung von flächigen Materialbahnen wird zumeist beidseitig der Materialbahn ein Randstreifen abgetrennt. Diese Abtrennung erfolgt beispielsweise, um eine exakte Breite der Materialbahn zu erhalten, um genau definierte Ränder der Materialbahn herzustellen, um einheitliche Eigenschaften und Bedingungen über die Breite der Materialbahn bzw. des Querprofils zu erzielen und, um aus produktionstechnischen Gründen einen ruhigen Maschinenlauf zu gewährleisten. Damit die von der laufenden, flächigen Materialbahn abgetrennten Randstreifen nicht mit der fertigen Materialbahn mitlaufen und gegebenenfalls mit dem hergestellten Fertigprodukt aufgewickelt werden, werden die Randstreifen meist abgeschlagen und kontinuierlich abgeführt. Für die Durchtrennung von Randstreifen, werden als Abschlagvorrichtungen druckluftbeaufschlagte Düse(n), sogenannte Knock-Down-Düse(n) im Stand der Technik eingesetzt. Die abgeführten Randstreifen werden sofern möglich als wertvoller Rohstoff aufbereitet und dem Herstellungsprozess wieder zugeführt. Abführvorrichtungen zum Abführen von Randstreifen einer laufenden, flächigen Materialbahn, insbesondere aus Tissue, Papier, Pappe, Karton, Folie oder Textil sind im Stand der Technik bekannt. Als Abführeinrichtungen sind beispielsweise (Abführ)Trichter mit oder ohne Leitblech bekannt. Zudem werden zur Führung des Randstreifens zusätzlich auch Vakuumeinrichtungen sowie Druckluftvorrichtungen, insbesondere Blasdüsen und Ventilatoren eingesetzt.In the production of flat material webs, an edge strip is usually separated on both sides of the material web. This separation takes place, for example, to obtain an exact width of the material web to produce well-defined edges of the material web in order to achieve uniform properties and conditions across the width of the material web or the cross profile and to ensure a quiet machine operation for production-technical reasons. So that the edge strips separated from the continuous, flat material web do not run along with the finished material web and, if necessary, are wound up with the manufactured finished product, the edge strips are usually cut off and removed continuously. For the separation of edge strips, compressed air-pressurized nozzle (s), so-called knock-down nozzle (s) are used in the prior art as a tee. If possible, the discharged edge strips are treated as valuable raw material and returned to the production process. Discharge devices for removal Edge strips of a continuous, flat material web, in particular of tissue, paper, cardboard, cardboard, foil or textile are known in the art. As discharge devices, for example (discharge) funnels with or without baffle are known. In addition, vacuum devices and compressed air devices, in particular blowing nozzles and fans are additionally used to guide the edge strip.

Die WO 2013/127008 beschreibt ein Verfahren und eine Vorrichtung zur Handhabung von Randstreifen einer Papierbahn. Ein von der restlichen Papierbahn abgetrennter Randstreifen wird mit einer Luftdüse in eine Abführeinrichtung geführt, wobei der Randstreifen gegebenenfalls von der Luftdüse abgeschlagen, insbesondere durchtrennt und weiter in eine Stofflösevorrichtung, insbesondere einen Pulper abgeführt wird. Beispielhaft werden als Randstreifenfördersysteme Vakuumsysteme, Transportventilatorsysteme und Injektorsysteme angeführt.The WO 2013/127008 describes a method and apparatus for handling edge strips of a paper web. An edge strip separated from the rest of the paper web is guided with an air nozzle into a discharge device, the edge strip optionally being cut off from the air nozzle, in particular severed and further discharged into a pulper, in particular a pulper. By way of example, edge-strip conveying systems include vacuum systems, transport fan systems and injector systems.

Bekannte Luftleitbleche und Verfahren zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn sind noch verbesserungswürdig und haben oft den Nachteil, dass beim Abführen eine nur unzureichende Trennung zwischen abgetrennten Randstreifen und der Materialbahn erfolgt, so dass der Randstreifen sich wieder an der Materialbahn anordnet und mit der Materialbahn mitgeführt wird. Des Weiteren stabilisieren die im Stand der Technik bekannten Luftleitbleche und Verfahren zum Abführen eines Randstreifens den Randstreifen nicht ausreichend und zuverlässig, um eine gute Führung des Randstreifens sicher zu stellen. Zudem sind die bekannten Luftleitbleche und Verfahren zum Abführen nicht einfach, schnell und reproduzierbar einstellbar auf unterschiedliche Randstreifenbreiten, Produktionsgeschwindigkeiten der Materialbahnen und Flächengewichte des Randstreifens. Des Weiteren wird bei bekannten Abführvorrichtungen und Verfahren aufgrund mangelnder und/oder ungenauer Einstellmöglichkeiten Energie, insbesondere Energie nicht benötigter Druckluftsysteme, verschwendet.Known baffles and methods for removing an edge strip of a running, flat material web are still in need of improvement and often have the disadvantage that when removing an insufficient separation between separated edge strips and the web takes place, so that the edge strip is again arranged on the web and with the Material web is carried. Furthermore, the prior art air baffles and methods for discharging an edge strip do not sufficiently and reliably stabilize the edge strip to ensure good guidance of the edge strip. In addition, the known baffles and methods for discharging are not easy, fast and reproducibly adjustable to different edge strip widths, production speeds of the webs and basis weights of the edge strip. Furthermore, in known discharge devices and methods due to lack of and / or inaccurate Adjustments energy, especially energy unneeded compressed air systems, wasted.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein verbessertes Luftleitblech und ein verbessertes Verfahren zum Abführen einer laufenden, flächigen Materialbahn, insbesondere aus Tissue, Papier, Pappe, Karton, Folie oder Textil bereitzustellen, bei dem die zuvor genannten Nachteile vermieden werden. Insbesondere soll mit dem Luftleitblech und dem Verfahren zum Abführen einer Materialbahn ein zuverlässiges und reproduzierbares Abführen eines Randstreifens bei allen Flächengewichten und Produktionsgeschwindigkeiten der Materialbahn ermöglicht und ein Rückanordnen des Randstreifens zur Materialbahn verhindert werden. Des Weiteren soll das Luftleitblech einfach, schnell und reproduzierbar einstellbar sein. Insbesondere sollen Produktionsausfälle oder Qualitätsschwankungen der hergestellten Materialbahn, welche auf das Luftleitblech und das Verfahren zurückgeführt werden können, weitestgehend vermieden werden.The present invention is therefore based on the object to provide an improved air baffle and an improved method for removing a running, flat web of material, in particular of tissue, paper, cardboard, cardboard, foil or textile, in which the aforementioned disadvantages are avoided. In particular, with the air guide plate and the method for discharging a material web, a reliable and reproducible removal of an edge strip at all basis weights and production speeds of the material web is to be made possible and rearrangement of the edge strip to the material web can be prevented. Furthermore, the air baffle should be easy, fast and reproducible adjustable. In particular, production losses or variations in quality of the material web produced, which can be attributed to the air baffle and the process, should be largely avoided.

ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION

Überraschender Weise wurde nun gefunden, dass die Aufgabe mit einem Luftleitblech nach Anspruch 1 und einem Verfahren gelöst wird.Surprisingly, it has now been found that the object is achieved with an air guide plate according to claim 1 and a method.

Das erfindungsgemäße Luftleitblech zum Abführen eines Randstreifens in einer Maschine zur Herstellung einer laufenden, flächigen Materialbahn insbesondere aus Tissue, Papier, Pappe, Karton, Folie oder Textil weist gegenüber bekannten Luftleitblechen wenigstens ein Lufteinzugsspalt zwischen der einen oder den mehreren Ausblasdüse(n) und dem wenigstens einen Randstreifen-Auslaufblech auf.The air guide plate according to the invention for discharging an edge strip in a machine for producing a running, flat material web, in particular from tissue, paper, cardboard, foil or textile, has at least one air intake gap between the one or more blower nozzle (s) and the at least one a edge strip-outlet sheet on.

Gegenstand der Erfindung ist daher ein Luftleitblech zum Abführen eines Randstreifens in einer Maschine zur Herstellung einer laufenden, flächigen Materialbahn , insbesondere aus Tissue, Papier, Pappe, Karton, Folie oder Textil mit einer Randstreifenfläche aufweisend eine Randstreifenlänge in Maschinenlängsrichtung und eine Randstreifenbreite in Maschinenquerrichtung, wobei die Begriffe Maschinenlängsrichtung und Maschinenquerrichtung jeweils bezogen auf die Maschine sind, einem Randstreifen-Außenrand , welcher in Maschinenquerrichtung einen Seitenrand der laufenden, flächigen Materialbahn nach außen hin abschließt und einem Randstreifen-Innenrand , welcher in Richtung der Mitte der laufenden, flächigen Materialbahn angeordnet ist, umfassend in Richtung einer Längserstreckungsachse angeordnet wenigstens ein Randstreifen-Einlaufblech , eine oder mehrere Ausblasdüse(n) und wenigstens ein Randstreifen-Auslaufblech , wobei die eine oder mehreren Ausblasdüse(n) zwischen dem wenigstens einen Randstreifen-Einlaufblech und dem wenigstens einen Randstreifen-Auslaufblech angeordnet ist/sind und das Luftleitblech eine Luftleitblechaußenkante auf der von der Mitte der Materialbahn abgewandten Seite aufweist, wobei zwischen der einen oder den mehreren Ausblasdüse(n) und dem wenigstens einen Randstreifen-Auslaufblech wenigstens ein Lufteinzugsspalt angeordnet ist, wobei der wenigstens eine Lufteinzugsspalt eine Länge in Richtung der Längserstreckungsachse im Bereich von 0,2 bis 5 mm aufweist.The invention is therefore an air guide for discharging an edge strip in a machine for producing a running, flat web of material, in particular tissue, paper, cardboard, film or textile with an edge strip surface having an edge strip length in the machine longitudinal direction and an edge strip width in the cross-machine direction the terms machine longitudinal direction and machine transverse direction are in each case based on the machine, a marginal edge outer edge which terminates in the cross-machine direction a side edge of the continuous, flat material web to the outside and a marginal inner edge, which is arranged in the direction of the center of the current, flat material web, comprising at least one edge strip inlet plate, one or more outlet nozzle (s) and at least one edge strip outlet plate, wherein the one or more outlet nozzle (s) between the we at least one edge strip inlet plate and the at least one edge strip outlet plate is / are arranged and the air guide plate has a Luftleitblechaußenkante on the side facing away from the center of the material web side, wherein between the one or more Ausblasdüse (s) and the at least one marginal strip-Auslaufblech at least one air intake gap is arranged, wherein the at least one air intake gap has a length in the direction of the longitudinal extension axis in the range of 0.2 to 5 mm.

Ein weiterer Gegenstand der Erfindung ist ein Verfahren zum Abführen eines Randstreifens in einer Maschine zur Herstellung einer laufenden, flächigen Materialbahn umfassend die folgenden Schritte:

  1. a) Bereitstellen wenigstens eines Randstreifens einer laufenden , flächigen Materialbahn , insbesondere aus Tissue, Papier, Pappe, Karton, Folie oder Textil mit einer Randstreifenfläche aufweisend eine Randstreifenlänge in Maschinenlängsrichtung und eine Randstreifenbreite in Maschinenquerrichtung , wobei die Begriffe Maschinenlängsrichtung und Maschinenquerrichtung jeweils bezogen auf die Maschine sind, einem Randstreifen-Außenrand , welcher in Maschinenquerrichtung einen Seitenrand der laufenden, flächigen Materialbahn nach außen hin abschließt und einem Randstreifen-Innenrand , welcher in Richtung der Mitte der laufenden, flächigen Materialbahn angeordnet ist,
  2. b) Bereitstellen wenigstens eines Luftleitbleches zum Abführen des in Schritt a) bereitgestellten Randstreifens , umfassend in Richtung einer Längserstreckungsachse angeordnet wenigstens ein Randstreifen-Einlaufblech , eine oder mehrere Ausblasdüse(n) und wenigstens ein Randstreifen-Auslaufblech , wobei die eine oder mehreren Ausblasdüse(n) zwischen dem wenigstens einen Randstreifen-Einlaufblech und dem wenigstens einen Randstreifen-Auslaufblech angeordnet ist/sind und das Luftleitblech eine Luftleitblechaußenkante auf der von der Mitte der Materialbahn abgewandten Seite aufweist,
  3. c) Beaufschlagen der einen oder mehreren Ausblasdüse(n) mit einer fluiden Strömung , insbesondere einer Druckluftströmung,
  4. d) Abführen des in Schritt a) bereitgestellten Randstreifens in mindestens eine Abführvorrichtung , insbesondere einen Abführtrichter,
wobei die mit der fluiden Strömung, beaufschlagte(n) wenigstens eine Ausblasdüse oder die mehreren Ausblasdüsen in Richtung der Luftleitblechaußenkante ausströmt/en.Another object of the invention is a method for removing an edge strip in a machine for producing a running, flat material web comprising the following steps:
  1. a) providing at least one edge strip of a running, flat material web, in particular of tissue, paper, cardboard, cardboard, foil or textile an edge strip surface having an edge strip length in the machine longitudinal direction and an edge strip width in the cross machine direction, wherein the terms machine longitudinal direction and machine transverse direction are based on the machine, a marginal edge outer edge which terminates in the cross machine direction a side edge of the current, flat material web to the outside and an edge strip inner edge , which is arranged in the direction of the center of the running, flat material web,
  2. b) providing at least one air baffle for discharging the edge strip provided in step a), comprising at least one edge strip inlet plate, one or more outlet nozzle (s) and at least one edge strip outlet plate arranged in the direction of a longitudinal extension axis, wherein the one or more outlet nozzle (n ) between the at least one edge strip inlet plate and the at least one edge strip outlet plate is / are arranged and the air guide plate has an air guide plate outer edge on the side facing away from the center of the material web side,
  3. c) subjecting the one or more discharge nozzle (s) to a fluid flow, in particular a compressed air flow,
  4. d) discharging the edge strip provided in step a) into at least one removal device, in particular a discharge funnel,
wherein the at least one blow nozzle or the plurality of blow nozzles acted upon by the fluid flow, flows out in the direction of the air guide sheet outer edge.

Ein weiterer Gegenstand der Erfindung ist die Verwendung des Luftleitblechs in einer Maschine zur Herstellung von flächigen Materialbahnen , insbesondere ausgewählt unter einer Tissuemaschine, einer Papiermaschine, einer Kartonmaschine, einer Wellpappenrohpapiermaschine, einer Streichmaschine, einer Kaschiermaschine, einer Beschichtungsmaschine, einer Folienmaschine, einer Textilmaschine, einer Faserbandmaschine und Kombinationen hiervon.Another object of the invention is the use of the air baffle in a machine for producing flat webs, in particular selected from a tissue machine, a paper machine, a board machine, a corrugated base paper machine, a coating machine, a laminating machine, a coating machine, a film machine, a textile machine, a Sliver machine and combinations thereof.

Ein weiterer Gegenstand der Erfindung ist die Verwendung des Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn bei der Herstellung einer flächigen Materialbahn insbesondere ausgewählt unter der Herstellung von Papier, Pappe, Wellpappe, Karton, grafischen Papieren, Verpackungspapieren, Hygienepapieren, insbesondere Tissue, kaschiertem Papier, Folien, Textilbahnen, Faserbahnen und Kombinationen hiervon.Another object of the invention is the use of the method for removing an edge strip of a running, flat web in the production of a sheet material in particular selected from the production of paper, cardboard, corrugated cardboard, cardboard, graphic papers, packaging papers, tissue paper, especially tissue, laminated Paper, films, textile webs, fibrous webs and combinations thereof.

DETAILLIERTE BESCHREIBUNG DER ERFINDUNGDETAILED DESCRIPTION OF THE INVENTION

Im Rahmen der vorliegenden Erfindung wird unter laufenden die Fortbewegung in Herstellungsgeschwindigkeit, insbesondere einer hergestellten Bahn aus Tissue, Papier, Pappe, Karton, kaschiertem Papier, Folien und Kombinationen hiervon, verstanden.In the context of the present invention, continuous motion is understood to be production speed, in particular a manufactured web of tissue, paper, cardboard, paperboard, laminated paper, films and combinations thereof.

Im Rahmen der vorliegenden Erfindung wird unter flächig eine ebene Fläche verstanden, welche im Verhältnis zur Ihrer Länge in Maschinenlängsrichtung und zu Ihrer Breite in Maschinenquerrichtung jeweils bezogen auf die Herstellungsmaschine, eine minimale Dicke aufweist. Beispielsweise liegen die Dicken bestimmt nach EN ISO 12625-3:2014 im Bereich von 50 µm bis 1000 µm.In the context of the present invention is understood by flat a flat surface, which in relation to their length in the machine direction and to your Width in the cross machine direction in each case based on the manufacturing machine, has a minimum thickness. For example, the thicknesses are determined according to EN ISO 12625-3: 2014 in the range of 50 microns to 1000 microns.

Im Rahmen der vorliegenden Erfindung wird unter Materialbahn eine auf einer Bahnherstellungsmaschine produzierte flächige Bahn verstanden. Insbesondere wird unter Materialbahn eine hergestellte flächige Bahn aus Tissue, Papier, Pappe, Karton, kaschiertem Papier, Folie und Kombinationen hiervon, verstanden.In the context of the present invention, material web is understood to be a flat web produced on a web production machine. In particular, material web is understood to mean a manufactured sheet of tissue, paper, cardboard, paperboard, laminated paper, film and combinations thereof.

Im Rahmen der vorliegenden Erfindung wird unter Lufteinzugsspalt eine Öffnung verstanden durch welche Umgebungsluft hindurch treten, insbesondere eingesaugt werden kann, verstanden. Ein Lufteinzugsspalt kann insbesondere ausgewählt sein unter einem Schlitz, einem Loch, einer Düse und Kombinationen hiervon.In the context of the present invention, the term "air intake gap" is understood to mean an opening through which ambient air can pass, in particular can be sucked in, understood. In particular, an air intake nip may be selected from a slot, a hole, a nozzle, and combinations thereof.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Luftleitblechs ist die wenigstens eine Ausblasdüse in einem eingeschlossenen Winkel oder sind die mehreren Ausblasdüsen in einem oder mehreren eingeschlossenen Winkel(n) zu der Luftleitblechaußenkante im Bereich von 0° bis 45°, vorzugsweise im Bereich von 5 bis 20° angeordnet und weisen in Richtung der Luftleitblechaußenkante .In a preferred embodiment of the inventive air baffle, the at least one breather nozzle is at an included angle or the plurality of breather nozzles at one or more included angles to the airfoil outer edge are in the range of 0 ° to 45 °, preferably in the range of 5 to 20 ° arranged and point in the direction of the air guide plate outer edge.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Luftleitblechs ist im Bereich des Randstreifens über die Randstreifenbreite oder schmaler als die Randstreifenbreite eine oder sind mehrere mit einer fluiden Strömung , insbesondere einer Druckluftströmung, beaufschlagte Ausblasdüse(n) angeordnet.In a preferred embodiment of the air baffle according to the invention, in the region of the edge strip, over the edge strip width or narrower than the edge strip width, one or more of a fluid flow, in particular a compressed air flow, acted upon blowing nozzle (s) is arranged.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Luftleitblechs ist im Bereich des Randstreifen-Einlaufblechs in Maschinenquerrichtung eine Drehachse angeordnet, um welche das Luftleitblech schwenkbar angeordnet ist.In a preferred embodiment of the air baffle according to the invention, an axis of rotation is arranged in the region of the edge strip inlet plate in the cross-machine direction, about which the air baffle plate is pivotably arranged.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Luftleitblechs ist das Luftleitblech derart schwenkbar um die Drehachse in Maschinenquerrichtung angeordnet, dass ein in das Luftleitblech einlaufender Randstreifen mit einem Winkel im Bereich von π bis 2π, vorzugsweise im Bereich von π bis 3/2π bezogen auf den einlaufenden Randstreifen umgelenkt wird.In a preferred embodiment of the air baffle according to the invention, the air baffle is arranged so pivotable about the axis of rotation in the cross-machine direction that an edge strip entering the air baffle at an angle in the range of π to 2π, preferably in the range of π to 3 / 2π based on the incoming edge strip is diverted.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Luftleitblechs ist bei dem schwenkbaren Luftleitblech an der Randstreifenauslaufseite des wenigstens einen Randstreifen-Auslaufblechs wenigstens ein Messerelement angeordnet, welches mit einem gegenüberliegend angeordneten Gegenmesser beim Schwenken des Leitblechs einen Scherspalt ausbildet. Insbesondere ist ein Messerelement ausgewählt unter einer Kante, einer Spitze, einer Klinge, einer Schneide, einer Zacke, einer Perforation, einer Wellung und Kombinationen hiervon.In a preferred embodiment of the air baffle according to the invention, at least one blade element is arranged at the edge strip outlet side of the at least one edge strip outlet plate, which forms a shear gap with an oppositely arranged counter blade when the baffle is pivoted. In particular, a knife element is selected from an edge, a point, a blade, a blade, a point, a perforation, a corrugation, and combinations thereof.

Im Rahmen der vorliegenden Erfindung wird unter einem Gegenmesser ein Messer verstanden, welches derart angeordnet sind, dass eine oder mehrere Gegenmesser mit einem oder den mehreren Messerelement(en) eine Schervorrichtung zum Durchtrennen des Randstreifens der Materialbahn ausbilden. Insbesondere ist ein Gegenmesser ausgewählt unter einer Kante, einer Spitze, einer Klinge, einer Schneide, einer Zacke, einer Perforation, einer Wellung und Kombinationen hiervon.In the context of the present invention, a counterknife is understood to mean a knife which is arranged such that one or more counterknives with one or more knife elements form a shearing device for severing the edge strip of the material web. In particular, a counter knife is selected from an edge, a point, a blade, a blade, a point, a perforation, a corrugation, and combinations thereof.

Im Rahmen der vorliegenden Erfindung wird unter Durchtrennen die Zerteilung einer Bahn eines Randstreifens in Richtung der Randstreifenbreite in Maschinenquerrichtung, verstanden.In the context of the present invention, the severing means the division of a web of a marginal strip in the direction of the edge strip width in the cross-machine direction.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn strömt die mit der fluiden Strömung beaufschlagte wenigstens eine Ausblasdüse in einem eingeschlossenen Winkel oder strömen die beaufschlagten mehreren Ausblasdüsen in einem oder mehreren eingeschlossenen Winkel(n) zu der Luftleitblechaußenkante im Bereich von 0° bis 45°, vorzugsweise im Bereich von 5 bis 20° aus.In a preferred embodiment of the method according to the invention for discharging an edge strip of a running, flat material web, the at least one discharge nozzle acted upon by the fluid flow flows at an included angle or the applied multiple discharge nozzles flow in one or more enclosed angles to the air guide sheet outer edge in the region from 0 ° to 45 °, preferably in the range of 5 to 20 °.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn ist die eine oder sind mehreren Ausblasdüse(n) im Bereich des Randstreifens über die Randstreifenbreite oder schmaler als die Randstreifenbreite mit der fluiden Strömung beaufschlagt.In a preferred embodiment of the method according to the invention for discharging an edge strip of a running, flat material web, the one or more ejection nozzle (s) in the region of the edge strip is acted upon by the fluid flow over the edge strip width or narrower than the edge strip width.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn wird das Abführen in Schritt d) des in Schritt a) bereitgestellten Randstreifens in mindestens eine Abführvorrichtung, mit einer Schwenkbewegung des in Schritt b) bereitgestellten wenigstens eines Luftleitbleches eingeleitet.In a preferred embodiment of the method according to the invention for removing an edge strip of a running, flat material web, the removal in step d) of the edge strip provided in step a) is introduced into at least one removal device, with a pivoting movement of the at least one air baffle provided in step b).

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn wird die Schwenkbewegung des in Schritt b) bereitgestellten wenigstens eines Luftleitbleches mit einer Schwenkvorrichtung durchgeführt, ausgewählt unter einer elektrischen Schwenkvorrichtung, einer pneumatischen Schwenkvorrichtung, einer hydraulischen Schwenkvorrichtung und Kombinationen hiervon.In a preferred embodiment of the method according to the invention for removing an edge strip of a running, flat material web, the pivoting movement of the at least one air baffle provided in step b) is performed with a pivoting device selected from an electric pivoting device, a pneumatic swivel device, a hydraulic swivel device, and combinations thereof.

Im Rahmen der vorliegenden Erfindung wird unter einer elektrischen Schwenkvorrichtung eine elektrisch betriebene Schwenkvorrichtung verstanden.In the context of the present invention, an electric swivel device is understood to mean an electrically operated swivel device.

Im Rahmen der vorliegenden Erfindung wird unter einer pneumatischen Schwenkvorrichtung eine pneumatisch betriebene Schwenkvorrichtung verstanden.In the context of the present invention, a pneumatic swivel device is understood to mean a pneumatically operated swivel device.

Im Rahmen der vorliegenden Erfindung wird unter einer hydraulischen Schwenkvorrichtung eine hydraulisch betriebene Schwenkvorrichtung verstanden.In the context of the present invention, a hydraulic swivel device is understood to mean a hydraulically operated swivel device.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn wird die Schwenkbewegung des in Schritt b) bereitgestellten wenigstens eines Luftleitbleches in einem Winkel im Bereich von π bis 2π, vorzugsweise im Bereich von π bis 3/2π, bezogen auf den einlaufenden Randstreifen , durchgeführt.In a preferred embodiment of the method according to the invention for discharging an edge strip of a running, flat material web, the pivoting movement of the at least one air baffle provided in step b) is at an angle in the range of π to 2π, preferably in the range of π to 3 / 2π, based on the incoming edge strip, performed.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn wird der Randstreifen während der Schwenkbewegung durch eine Scherbeanspruchung zwischen einem an dem wenigsten einen Randstreifen-Auslaufblech angeordneten wenigsten einem Messerelement und einem gegenüberliegend angeordneten Gegenmesser durchtrennt.In a preferred embodiment of the method according to the invention for removing an edge strip of a running, flat material web, the edge strip is severed during the pivoting movement by a shearing stress between at least one edge strip outlet plate arranged at least one knife element and an oppositely disposed counter knife.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn wird in einem weiteren Schritt e) der in Schritt d) in mindestens eine Abführvorrichtung abgeführte Randstreifen in mindestens eine Stofflösevorrichtung , insbesondere einen Pulper eingeleitet.In a preferred embodiment of the method according to the invention for removing an edge strip of a running, flat material web is in another Step e) introduced in step d) in at least one discharge device led edge strip in at least one pulper, in particular a pulper.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens zum Abführen eines Randstreifens einer laufenden, flächigen Materialbahn wird das Einleiten des durchtrennten Randstreifens in Kombination mit einer Abschlagvorrichtung durchgeführt.In a preferred embodiment of the method according to the invention for removing an edge strip of a running, flat material web, the introduction of the severed edge strip is carried out in combination with a stripping device.

FIGURENBESCHREIBUNG UND BEISPIELEFIGURE DESCRIPTION AND EXAMPLES

Die Erfindung wird nun anhand der Figuren 1 bis 3 und des Ausführungsbeispiels 1 nachfolgend erläutert.

Fig. 1
zeigt schematisch einen Querschnitt des Luftleitblechs gemäß einer Ausführungsform der Erfindung,
Fig. 2
zeigt schematisch einen Ausschnitt einer Aufsicht auf das Luftleitblech gemäß einer Ausführungsform der Erfindung mit einer oberhalb des Luftleitblechs angeordneten Materialbahn,
Fig. 3
zeigt schematisch einen Querschnitt eines schwenkbaren Luftleitblechs gemäß einer Ausführungsform der Erfindung nach Figur 1 mit verschiedenen Winkelpositionen des Luftleitblechs.
The invention will now be described with reference to FIGS. 1 to 3 and the embodiment 1 explained below.
Fig. 1
shows schematically a cross section of the baffle according to an embodiment of the invention,
Fig. 2
schematically shows a section of a plan view of the air guide plate according to an embodiment of the invention with a material web arranged above the air guide plate,
Fig. 3
schematically shows a cross section of a pivotable baffle according to an embodiment of the invention according to FIG. 1 with different angular positions of the air baffle.

In der Fig. 1 ist eine Ausführungsform eines erfindungsgemäßen Luftleitblechs 1 schematisch als ein Querschnitt entlang der Maschinenlängsrichtung MD dargestellt.In the Fig. 1 an embodiment of an air baffle 1 according to the invention is shown schematically as a cross section along the machine longitudinal direction MD.

Das Luftleitblech 1 umfasst ein Randstreifen-Einlaufblech 6, eine oder mehrere Ausblasdüse(n) 71, 72, 73, 74, 75, einen Lufteinzugsspalt 10 und ein Randstreifen-Auslaufblech 8. Das Randstreifen-Einlaufblech 6, die eine oder mehreren Ausblasdüse(n) 71, 72, 73, 74, 75, der Lufteinzugsspalt 10 und das Randstreifen-Auslaufblech 8 sind entlang einer Längserstreckungsachse L angeordnet. Das Querprofil des Luftleitblechs 1 kann einem Tragflächenquerprofil ähneln. Ein einlaufender Randstreifen 2 wird über das Randstreifen-Einlaufblech 6 geleitet, von einer fluiden Strömung S, welche aus der einen oder den mehreren Ausblasdüse(n) 71, 72, 73, 74, 75 strömt erfasst, an dem Lufteinzugsspalt 10 vorbei geleitet und in Richtung des Randstreifen-Auslaufblechs 8 geführt. Das Luftleitblech 1 hat eine Drehachse D um welche es schwenkbar ist. In der dargestellten Position ist das Luftleitblech 1 in eine Abführvorrichtung 13 eingeschwenkt. Ein Schwenkradius des Luftleitblechs 1 ist als gestrichelte Line abgebildet. Der Randstreifen 2 wird von dem Luftleitblech 1 in die Abführvorrichtung 13 in einer Fortbewegungsrichtung V geführt. Auf der Einschwenkseite für das Luftleitblech 1 ist an der Abführvorrichtung 13 ein Gegenmesser 12 angeordnet. Beim Einschwenken des Luftleitblechs 1 wird bei Gegenüberliegen des Messerelements 11 und des Gegenmessers 12 ein Scherspalt ausgebildet, in welchem der Randstreifen 2 durchtrennt wird. Aus der Abführvorrichtung 13 wird der Randstreifen 2 in eine Stofflösevorrichtung 14 geleitet.The air baffle 1 comprises a marginal strip inlet plate 6, one or more outlet nozzle (s) 71, 72, 73, 74, 75, an air inlet gap 10 and a marginal strip outlet plate 8. The edge strip inlet plate 6, the one or more outlet nozzle (n ) 71, 72, 73, 74, 75, the air intake gap 10 and the edge strip outlet plate 8 are arranged along a longitudinal extension axis L. The transverse profile of the air baffle 1 may be similar to a wing transverse profile. An incoming edge strip 2 is passed over the marginal strip inlet plate 6, by a fluid flow S, which flows from the one or more Ausblasdüse (s) 71, 72, 73, 74, 75 flows passed to the air inlet gap 10 and in Direction of the edge strip outlet plate 8 out. The air baffle 1 has a rotation axis D about which it is pivotable. In the illustrated position, the air guide plate 1 is pivoted into a discharge device 13. A pivot radius of the air guide plate 1 is shown as a dashed line. The edge strip 2 is guided by the air guide plate 1 in the discharge device 13 in a direction of travel V. On the Einschwenkseite for the air baffle 1, a counter blade 12 is disposed on the discharge device 13. When swinging the air guide plate 1, a shear gap is formed in opposite of the blade member 11 and the counter blade 12, in which the edge strip 2 is severed. From the discharge device 13, the edge strip 2 is passed into a pulper 14.

In der Fig. 2 ist schematisch ein Ausschnitt einer Aufsicht auf das Luftleitblech 1 gemäß einer Ausführungsform der Erfindung mit einer oberhalb des Luftleitblechs 1 angeordneten Materialbahn 3 dargestellt. Von der Materialbahn 3 wurde der Randstreifen 2 abgetrennt. Der Randstreifen 2 weist eine Randstreifenbreite B in Maschinenquerrichtung CD, einen Randstreifen-Außenrand 4, einen Randstreifen-Innenrand 5 auf und wird in der Fortbewegungsrichtung V geführt. Der Randstreifen-Außenrand 4 schließt in Maschinenquerrichtung CD einen Seitenrand der laufenden, flächigen Materialbahn 3 nach außen hin ab. Der Randstreifen-Innenrand 5 ist in Richtung der Mitte der laufenden, flächigen Materialbahn 3 angeordnet. Der Randstreifen 2 ist derart angeordnet, dass er über das Randstreifen-Einlaufblech 6 des Luftleitblechs 1 einläuft, über die Ausblasdüse(n) 71, 72, 73, 74, 75, den Lufteinzugsspalt 10 und das Randstreifen-Auslaufblech 8 geleitet wird. Das Randstreifen-Einlaufblech 6, die Ausblasdüse(n) 71, 72, 73, 74, 75, der Lufteinzugsspalt 10 und das Randstreifen-Auslaufblech 8 sind in der Längserstreckungsachse L angeordnet. Das Luftleitblech 1 weist eine Luftleitblechaußenkante 9 auf, welche auf der von der Mitte der Materialbahn 3 abgewandten Seite angeordnet ist. Die Ausblasdüse(n) 71, 72, 73, 74, 75 weisen in Richtung der Luftleitblechaußenkante 9 und sind in einem eingeschlossenen Winkel a, welcher sich zwischen der wenigstens einer der jeweiligen Ausblasdüse(n) 71, 72, 73, 74, 75 und der Luftleitblechaußenkante 9 ausbildet, angeordnet.In the Fig. 2 is a section of a plan view of the air baffle 1 according to an embodiment of the invention with a arranged above the baffle 1 material web 3 shown. From the material web 3, the edge strip 2 was separated. The edge strip 2 has an edge strip width B in the cross-machine direction CD, a marginal edge outer edge 4, an edge strip inner edge 5 and is guided in the direction of travel V. The marginal edge-outer edge 4 closes in the cross-machine direction CD a side edge of the running, flat material web 3 to the outside. The edge strip inner edge 5 is arranged in the direction of the center of the running, flat material web 3. The edge strip 2 is arranged such that it enters via the edge strip inlet plate 6 of the air baffle 1, via the discharge nozzle (s) 71, 72, 73, 74, 75, the air intake gap 10 and the edge strip outlet plate 8 is passed. The edge strip inlet plate 6, the Ausblasdüse (s) 71, 72, 73, 74, 75, the air inlet gap 10 and the edge strip outlet plate 8 are arranged in the longitudinal direction axis L. The air guide plate 1 has an air guide plate outer edge 9, which is arranged on the side facing away from the center of the material web 3 side. The exhaust nozzle (s) 71, 72, 73, 74, 75 point in the direction of the air guide sheet outer edge 9 and are at an included angle a, which between the at least one of the respective Ausblasdüse (s) 71, 72, 73, 74, 75 and the air guide sheet outer edge 9 forms, arranged.

In der Fig. 3 ist schematisch ein Querschnitt des Luftleitblechs 1 entlang der Maschinenlängsrichtung MD gemäß einer Ausführungsform der Erfindung nach Figur 1 mit verschieden angeordneten Winkelpositionen des Luftleitblechs 1 dargestellt. Entlang der Längserstreckungsachse L sind das Randstreifen-Einlaufblech 6, die Ausblasdüse(n) 71, 72, 73, 74, 75, der Lufteinzugsspalt 10 und das Randstreifen-Auslaufblech 8 angeordnet. Das Luftleitblech 1 ist um die Drehachse D schwenkbar angeordnet und kann beispielsweise von einer gestrichelt dargestellten Position des Luftleitblech 1 in eine mit durchgezogenen Linien dargestellte Position des Luftleitblech 1 geschwenkt werden. Die Richtung der Längserstreckungsachse L ist in der gestrichelt dargestellten Position unterschiedlich zu der mit durchgezogenen Linien dargestellten Position des Luftleitblechs 1. Das Messerelement 11 ist als optionale Ausführungsform dargestellt. Bei einem Schwenken des Luftleitblechs 1 aus der gestrichelt in die mit durchgezogener Line dargestellte Position wird der Randstreifen 2 durch das Luftleitblech 1 über das Gegenmesser 12 geführt, wobei der Randstreifen 2 durchtrennt wird. Der Randstreifen 2 wird in der mit durchgezogenen Linien dargestellten Position des Luftleitblechs 1 in die Fortbewegungsrichtung V in die Abführvorrichtung abgeführt.In the Fig. 3 schematically is a cross section of the air guide plate 1 along the machine longitudinal direction MD according to an embodiment of the invention according to FIG. 1 shown with different angular positions of the air baffle 1. Along the longitudinal axis L of the edge strip inlet plate 6, the Ausblasdüse (s) 71, 72, 73, 74, 75, the air inlet gap 10 and the edge strip outlet plate 8 are arranged. The air guide plate 1 is arranged pivotably about the axis of rotation D and can be pivoted, for example, from a position of the air guide plate 1 shown in dashed lines into a position of the air guide plate 1 shown by solid lines. The direction of the longitudinal extension axis L is different in the position shown in dashed lines to the position of the air guide plate 1 shown by solid lines. The knife element 11 is shown as an optional embodiment. Upon pivoting of the air baffle 1 from the dashed line in the position shown by a solid line, the edge strip 2 is guided through the air baffle 1 on the counter knife 12, wherein the edge strip 2 is severed. The edge strip 2 is discharged in the direction of travel V into the discharge device in the position of the air guide plate 1 shown in solid lines.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1:1:
LuftleitblechAir baffle
2:2:
Randstreifenedge strips
3:3:
Materialbahn(en)Material web (s)
4:4:
Randstreifen-AußenrandEdge trim outer edge
5:5:
Randstreifen-InnenrandBorder strip inside edge
6:6:
Randstreifen-EinlaufblechEdge strip-infeed plate
71, 72, 73, 74, 75:71, 72, 73, 74, 75:
Ausblasdüse(n)Blow-off nozzle (s)
8:8th:
Randstreifen-AuslaufblechEdge strip-delivery plate
9:9:
LuftleitblechaußenkanteLuftleitblechaußenkante
10:10:
LufteinzugsspaltAir intake gap
11:11:
Messerelementknife element
12:12:
Gegenmesseragainst knife
13:13:
Abführvorrichtungdischarge device
14:14:
StofflösevorrichtungThe pulper
B:B:
RandstreifenbreiteEdge strip width
D:D:
Drehachseaxis of rotation
CD:CD:
MaschinenquerrichtungCMD
MD:MD:
MaschinenlängsrichtungMachine direction
L:L:
LängserstreckungsachseLongitudinal axis of extension
S:S:
fluide Strömungfluid flow
V:V:
Fortbewegungsrichtung der flächigen MaterialbahnMovement direction of the flat material web
α:α:
eingeschlossener Winkelincluded angle
Beispiel 1example 1

Das erfindungsgemäße Luftleitblech wurde als feststehendes sowie schwenkbares Luftleitblech getestet. Das Luftleitblech wurde unterhalb der Materialbahn, insbesondere einer Papierbahn angebracht. Das Luftleitblech wies zwischen einer und zehn Ausblasdüsen auf und der Lufteinzugsspalt zwischen den Ausblasdüsen und dem Randstreifen-Auslaufblech hatte eine Länge in Richtung der Längserstreckungsachse im Bereich von 0,2 bis 5 mm. Die Ausblasdüsen waren in Richtung der Luftleitblechaußenkante ausgerichtet und in einem eingeschlossenen Winkel von 0° bis 45° vorzugsweise von 5 bis 20° zu der Luftleitblechaußenkante angeordnet.The air guide plate according to the invention was tested as a fixed and pivotable air baffle. The air baffle was mounted below the material web, in particular a paper web. The air baffle had between one and ten exhaust nozzles and the air intake gap between the exhaust nozzles and the edge strip exhaust plate had a length in the direction of the longitudinal axis in the range of 0.2 to 5 mm. The exhaust nozzles were aligned in the direction of the air guide sheet outer edge and arranged at an included angle of 0 ° to 45 °, preferably from 5 to 20 ° to the air guide sheet outer edge.

Der Randstreifen wurde von dem Luftleitblech in einen Abführtrichter oder einen Abführkanal eingeleitet. In dem Abführkanal wurden in Teilversuchen Düsen, wie beispielsweise sogenannte Vits-Düsen angeordnet. In Kombination mit dem erfindungsgemäßen Luftleitblech wurden zum Abschlagen des Randstreifens auch druckbeaufschlagte Knock-Down-Düsen als Trennvorrichtung für den Randstreifen getestet. In einer weiteren bevorzugten Ausführungsform wurden die Oberflächen des erfindungsgemäßen Luftleitblechs mit einer Antihaftbeschichtung insbesondere einer TerraDry GT3/CT3 des Unternehmens Voith Paper Onsite Services, Workshop, Parhalahti, Finnland ausgestattet. In einer weiteren bevorzugten Ausführungsform wurde die Antihaftbeschichtung aus Polytetrafluorethylen, insbesondere Teflon ausgeführt. In einer weiteren bevorzugten Ausführungsform wurde das erfindungsgemäße Luftleitblech aus Kunststoff, wie beispielsweise PE-UHMW mit oder ohne Glaskugelzusatz hergestellt.The edge strip was introduced from the air baffle in a discharge funnel or a discharge channel. In the discharge channel nozzles, such as so-called Vits nozzles were arranged in part experiments. In combination with the air guide plate according to the invention, pressure-tested knock-down nozzles were also tested as a separator for the edge strip for knocking off the edge strip. In a further preferred embodiment, the surfaces of the air baffle according to the invention were provided with a non-stick coating, in particular a TerraDry GT3 / CT3 from Voith Paper Onsite Services, Workshop, Parhalahti, Finland. In a further preferred embodiment, the non-stick coating was made of polytetrafluoroethylene, in particular Teflon. In a further preferred embodiment, the inventive air baffle made of plastic, such as PE-UHMW was prepared with or without glass ball additive.

Claims (13)

  1. Air guide plate (1) for discharging an edge strip (2) in a machine for producing a running, planar material web (3), in particular made of tissue, paper, paperboard, board, film or textile having an edge-strip surface that has an edge-strip length in the machine direction (MD) and an edge-strip width (B) in the cross-machine direction (CD), wherein the terms machine direction (MD) and cross-machine direction (CD) are in each case with respect to the machine, having an edge-strip outer edge (4) which terminates a lateral edge of the running, planar material web (3) toward the outside in the cross-machine direction (CD), and having an edge-strip inner edge (5) which is arranged in the direction of the middle of the running, planar material web (3), comprising, arranged in the direction of an axis of longitudinal extent (L), at least one edge-strip inlet plate (6), one or more blow-out nozzle (s) (71, 72, 73, 74, 75) and at least one edge-strip outlet plate (8), wherein the one or more blow-out nozzle(s) (71, 72, 73, 74, 75) is/are arranged between the at least one edge-strip inlet plate (6) and the at least one edge-strip outlet plate (8) and the air guide plate (1) has an air-guide-plate outer edge (9) on the side away from the middle of the material web (3),
    characterized in that
    at least one air intake gap (10) is arranged between the one or more blow-out nozzle (s) (71, 72, 73, 74, 75) and the at least one edge-strip outlet plate (8), wherein the at least one air intake gap (10) has a length in the range of 0.2 to 5 mm in the direction of the axis of longitudinal extent (L).
  2. Air guide plate (1) according to Claim 1, wherein the at least one blow-out nozzle (71, 72, 73, 74, 75) is arranged at an enclosed angle (α), or the plurality of blow-out nozzles (71, 72, 73, 74, 75) are arranged at one or more enclosed angles (α), in the range of 0° to 45°, preferably in the range of 5° to 20°, to the air-guide-plate outer edge (9), and face in the direction of the air-guide-plate outer edge (9).
  3. Air guide plate (1) according to either of the preceding claims, wherein one or more blow-out nozzle(s) (71, 72, 73, 74, 75) that is/are subjected to a fluid flow (S), in particular a compressed-air flow, is/are arranged in the region of the edge strip (2) across the edge-strip width (B) or less than the edge-strip width (B).
  4. Air guide plate (1) according to one of the preceding claims, wherein an axis of rotation (D), about which the air guide plate (1) is arranged so as to be pivotable, is arranged in the cross-machine direction (CD) in the region of the edge-strip inlet plate (6).
  5. Air guide plate (1) according to the preceding Claim 4, wherein the air guide plate (1) is arranged so as to be pivotable about the axis of rotation (D) in the cross-machine direction (CD) such that an edge strip (2) entering the air guide plate (1) is deflected by an angle in the range of π to 2π, preferably in the range of π to 3/2π, with respect to the entering edge strip (2).
  6. Method for discharging an edge strip (2) in a machine for producing a running, planar material web (3), comprising the following steps of:
    a. providing at least one edge strip (2) of a running, planar material web (3), in particular made of tissue, paper, paperboard, board, film or textile having an edge-strip surface that has an edge-strip length in the machine direction (MD) and an edge-strip width (B) in the cross-machine direction (CD), wherein the terms machine direction (MD) and cross-machine direction (CD) are in each case with respect to the machine, having an edge-strip outer edge (4) which terminates a lateral edge of the running, planar material web (3) toward the outside in the cross-machine direction (CD), and having an edge-strip inner edge (5) which is arranged in the direction of the middle of the running, planar material web (3),
    b. providing at least one air guide plate (1), according to one of the preceding Claims 1 to 5, for discharging the edge strip (2) provided in step a), comprising, arranged in the direction of an axis of longitudinal extent (L), at least one edge-strip inlet plate (6), one or more blow-out nozzle(s) (71, 72, 73, 74, 75) and at least one edge-strip outlet plate (8), wherein the one or more blow-out nozzle(s) (71, 72, 73, 74, 75) is/are arranged between the at least one edge-strip inlet plate (6) and the at least one edge-strip outlet plate (8) and the air guide plate (1) has an air-guide-plate outer edge (9) on the side away from the middle of the material web (3),
    c. subjecting the one or more blow-out nozzle(s) (71, 72, 73, 74, 75) to a fluid flow (S), in particular a compressed air flow,
    d. discharging the edge strip (2) provided in step a) into at least one discharging device (13), in particular a discharging hopper,
    wherein
    the at least one blow-out nozzle (71, 72, 73, 74, 75) or plurality of blow-out nozzles (71, 72, 73, 74, 75) subjected to the fluid flow (S) emit(s) in the direction of the air-guide-plate outer edge (9) .
  7. Method according to the preceding Claim 6, wherein the at least one blow-out nozzle (71, 72, 73, 74, 75) that is subjected to the fluid flow (S) emits at an enclosed angle (α), or the plurality of blow-out nozzles (71, 72, 73, 74, 75) that are subjected to the fluid flow emit at one or more enclosed angle (s) (α), in the range of 0° to 45°, preferably in the range of 5° to 20°, to the air-guide-plate outer edge (9).
  8. Method according to either of the preceding Claims 6 and 7, wherein only the one or more blow-out nozzle(s) (71, 72, 73, 74, 75) is/are subjected to the fluid flow (S) in the region of the edge strip (2) across the edge-strip width (B) or less than the edge-strip width (B).
  9. Method according to one of the preceding Claims 6 to 8, wherein the discharging, in step d), of the edge strip (2), provided in step a), into at least one discharging device (13) is initiated with a pivoting movement of the at least one air guide plate (1) provided in step b).
  10. Method according to the preceding Claim 9, wherein the pivoting movement of the at least one air guide plate (1) provided in step b) is carried out at an angle in the range of π to 2π, preferably in the range of π to 3/2π, with respect to the entering edge strip (2).
  11. Method according to one of the preceding Claims 6 to 10, wherein, in a further step e), the edge strip (2) discharged into at least one discharging device (13) in step d) is introduced into at least one pulping device (14), in particular a pulper.
  12. Use of the air guide plate (1) according to one of the preceding Claims 1 to 5 in a machine for producing planar material webs (3), in particular selected from a tissue machine, a paper machine, a board machine, a bogus paper machine, a coater, a laminator, a coating machine, a film machine, a textile machine, a sliver machine and combinations thereof.
  13. Use of the method for discharging an edge strip (2) of a running, planar material web (3), according to one of the preceding Claims 6 to 11, in the production of a planar material web (3), in particular selected from the production of paper, paperboard, corrugated board, board, graphic papers, packaging papers, hygienic papers, in particular tissue, laminated paper, films, textile webs, fibrous webs and combinations thereof.
EP15775459.9A 2014-11-05 2015-10-09 Air guide plate for leading away an edge strip of a material web, method for leading away an edge strip of the material web, and use of the air guide plate and of the method Not-in-force EP3215324B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014222550 2014-11-05
PCT/EP2015/073324 WO2016071071A1 (en) 2014-11-05 2015-10-09 Air guide plate for leading away an edge strip of a material web, method for leading away an edge strip of the material web, and use of the air guide plate and of the method

Publications (2)

Publication Number Publication Date
EP3215324A1 EP3215324A1 (en) 2017-09-13
EP3215324B1 true EP3215324B1 (en) 2018-11-21

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EP15775459.9A Not-in-force EP3215324B1 (en) 2014-11-05 2015-10-09 Air guide plate for leading away an edge strip of a material web, method for leading away an edge strip of the material web, and use of the air guide plate and of the method

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EP (1) EP3215324B1 (en)
CN (1) CN107073736B (en)
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WO (1) WO2016071071A1 (en)

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CN111874715B (en) * 2020-07-04 2022-07-19 东莞市全泰纸品有限公司 Corrugated board production line

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FI124385B (en) * 2007-08-10 2014-08-15 Valmet Technologies Inc Edge cutting and removal arrangement
DE102007042025B4 (en) * 2007-09-05 2018-12-20 Windmöller & Hölscher Kg Device and method for guiding a material web
JP5522164B2 (en) * 2009-02-26 2014-06-18 コニカミノルタ株式会社 Manufacturing method of optical film
FI125148B (en) * 2011-06-07 2015-06-15 Valmet Technologies Inc Tip pulling device and cutting device for a feed tip for a fiber web machine
US9217225B2 (en) 2012-02-28 2015-12-22 Paprima Industries Inc. Paper manufacturing

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CA2966775C (en) 2018-11-06
CA2966775A1 (en) 2016-05-12
WO2016071071A1 (en) 2016-05-12
EP3215324A1 (en) 2017-09-13
CN107073736B (en) 2019-09-13
CN107073736A (en) 2017-08-18

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