EP3792208B1 - Folding device for flat material webs - Google Patents

Folding device for flat material webs Download PDF

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Publication number
EP3792208B1
EP3792208B1 EP19196461.8A EP19196461A EP3792208B1 EP 3792208 B1 EP3792208 B1 EP 3792208B1 EP 19196461 A EP19196461 A EP 19196461A EP 3792208 B1 EP3792208 B1 EP 3792208B1
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EP
European Patent Office
Prior art keywords
folding
knife
bar
knives
folding bar
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EP19196461.8A
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German (de)
French (fr)
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EP3792208A1 (en
Inventor
Winfried Schäfer
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Roth Composite Machinery GmbH
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Roth Composite Machinery GmbH
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Priority to EP19196461.8A priority Critical patent/EP3792208B1/en
Publication of EP3792208A1 publication Critical patent/EP3792208A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/247—Making webs in which the channel of each corrugation is transverse to the web feed by reciprocating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0082—Making filter elements, e.g. pleated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06J—PLEATING, KILTING OR GOFFERING TEXTILE FABRICS OR WEARING APPAREL
    • D06J1/00—Pleating, kilting or goffering textile fabrics or wearing apparel
    • D06J1/02—Pleating, kilting or goffering textile fabrics or wearing apparel continuously and transversely to the direction of feed
    • D06J1/06—Pleating, kilting or goffering textile fabrics or wearing apparel continuously and transversely to the direction of feed by reciprocating blades

Definitions

  • the invention relates to a folding device for flat material webs, in particular for folding or continuously folding material webs based on cellulose, paper, plastic and/or wire mesh and/or based on combinations or laminates of the aforementioned materials.
  • the material web to be folded can be a wire mesh-reinforced material web based on cellulose, paper, plastic or similar materials.
  • the folding device according to the invention has an infeed table for the continuous feeding of the web of material and at least one folding bar with a folding blade fixed thereto, which is set up for specific folding heights.
  • the folding beam can be moved up and down in cycles, so that folds can be introduced into the material web with the folding knife acting on the material web.
  • the web of material is expediently folded in the manner of bellows by means of this folding device, specifically in particular continuously folded in the manner of bellows.
  • Folding devices of the type mentioned above, see for example US 5,961,435A are known from practice and from the prior art in various variants.
  • the folding knives are usually fixed to the associated folding beam with screws, bolts or similar fixing elements.
  • Each folding knife is set up for specific folding heights and has a corresponding knife height h.
  • the folding knife fixed to the folding beam must first be dismantled and replaced with another folding knife of an alternative knife height h, which is set up for alternative folding heights.
  • h which is set up for alternative folding heights.
  • These measures are expensive.
  • the continuous operation of the device is interrupted by such a folding knife replacement for an undesirably long period of time.
  • the disassembly or assembly of the folding knife is also error-prone.
  • these known measures are also included relatively high effort and relatively high costs. In this respect, there is a need for improvement.
  • the invention is based on the technical problem of specifying a folding device of the type mentioned at the outset, in which the folding knife of the folding beam can be changed in a simple, inexpensive and functionally reliable manner.
  • the invention teaches a folding device of the type described at the beginning, which is characterized in that at least one further second folding knife is fixed to the folding bar and that by rotating the folding bar about an axis of rotation R extending parallel to the longitudinal direction of the folding bar instead of the first folding knife the second folding knife is available for introducing the folds into the web of material.
  • the continuously supplied webs of material are preferably webs of material based on cellulose, paper, plastic and/or wire mesh or combinations or laminates of these materials.
  • the folded webs of material are used for filter media. It is within the scope of the invention that the folds are introduced into the web of material with the proviso that the web of material is folded like a bellows.
  • a folding beam and the folding knives connected to it are arranged perpendicularly or essentially perpendicularly to the feed direction or to the longitudinal direction of the material web.
  • a folding knife expediently extends in the longitudinal direction of the associated one Folding bar, preferably over at least most of the length of the associated folding bar. It is recommended that a folding knife be fixed to the associated folding beam by means of fixing elements such as screws, bolts, clamping elements or the like. It is within the scope of the invention for a folding knife to protrude beyond its knife height h over the edge of the associated folding beam.
  • the first folding knife and the at least one further or second folding knife are each set up for different folding heights.
  • the at least two folding knives expediently protrude to different extents over the associated folding beam.
  • a highly recommended embodiment of the invention is characterized in that the first folding knife and another second folding knife are arranged on opposite longitudinal sides of the folding beam.
  • the respective other folding knife is then preferably ready for folding to disposal.
  • the two folding knives are arranged on opposite long sides of the folding bar and by rotating the folding bar about the axis of rotation by 180° or by about 180°, the other folding knife is available for folding.
  • At least three folding knives are fixed to the folding bar at a mutual distance and the folding knives are changed by rotating the folding bar by an angle of rotation corresponding to the distance between the folding knives.
  • the at least three or the three Folding knife fixed evenly distributed over the circumference of the folding beam.
  • the rotation of the folding bar to change a folding blade is then expediently carried out by 120° or by approximately 120° or by 240° or by approximately 240°.
  • the folding knives of the first folding bar are set up as upper knives and that a second folding bar is arranged below the first folding bar, which has at least one counter-folding knife, which acts as a lower knife for interacting with a folding knife of the first working as an upper knife Folding beam is set up.
  • the statement that the second folding bar is arranged below the first folding bar relates to the erected state of the device with the first folding bar on the upper side and the second folding bar on the lower side.
  • a folding knife of the first folding bar functioning as an upper knife and a counter-folding knife of the second folding bar functioning as a lower knife takes place as follows: During the up and down movement of the first folding bar, a folding knife of the first folding bar functioning as an upper knife slides directly over the surface a counter-folding knife of the second folding beam that functions as a bottom knife. In this way, functionally reliable folds can be formed in the continuously fed web of material and the web of material can in this way be folded in particular in the manner of bellows.
  • the second folding bar has at least two counter-folding knives.
  • the first or second counter-folding blade fixed to the second folding bar is then preferably available as the lower blade.
  • Two counter-folding knives are recommended fixed on opposite sides or on opposite longitudinal sides of the second folding bar.
  • a changeover between the two counter-folding knives takes place by rotating the folding beam about its axis of rotation, specifically preferably by rotating it through an angle of rotation of 180° or approximately 180°.
  • At least three counter-folding knives, in particular three counter-folding knives are fixed as lower knives on the second folding beam.
  • first folding bar preferably applies to the second folding bar or to the counter-folding knives fixed thereto, in particular with regard to the number and/or arrangement and/or fixing and/or rotation or rotation angle of the folding knives or counters -folding knife. In order to avoid repetition, reference is therefore made to the features of the first folding beam.
  • each counter-folding knife of the second folding bar is adapted to a folding knife of the first folding bar with regard to the desired folding heights and that a folding knife and a complementary counter -Folding knives can be converted into a folding position.
  • the folding position of folding knife and counter-folding knife means in particular that after the rotation of the first or second folding bar, the folding knife interacts with the corresponding counter-folding knife during the subsequent folding process.
  • the two folding bars can be rotated around their axis of rotation at the same time or approximately at the same time
  • the two folding beams can also be rotated one after the other.
  • the knife height h 1 of a first folding knife is at least 1.2 times, preferably at least 1.3 times, preferably at least 1.4 times and very preferably at least 1.5 times the knife height h 2 of a second folding knife of the folding beam.
  • the knife height h 1 of a first counter-folding knife is at least 1.2 times, preferably at least 1.3 times, preferably at least 1.4 times and very preferably at least 1.5 times as large as the knife height h 2 a second counter folding knife of the second folding beam.
  • the invention is based on the knowledge that with the folding device according to the invention a very simple and inexpensive change from one folding knife or counter-folding knife to another folding knife or counter-folding knife is possible. Elaborate disassembly and assembly work is not required with the device according to the invention. A quick change of the upper and lower knives is only possible by rotating the folding beam. In this respect, the operation or the continuous operation of the device is only briefly interrupted. It should be emphasized that these advantageous measures can be implemented at relatively low cost. The invention is thus characterized by simplicity, little effort and low cost.
  • the figures show a folding device according to the invention for flat material webs 1, specifically for the continuous folding of these material webs 1.
  • it may be a wire mesh-reinforced material web 1 based on cellulose.
  • the continuously fed web of material 1 is folded in the manner of bellows.
  • the enlarged section of the 1 shows the folds 7 introduced into the material web 1 with such a bellows-like fold.
  • the material web 1 is fed continuously via an infeed table 2 and is guided between two folding bars 3, 4 arranged behind the infeed table 2 in the feed direction.
  • the first upper folding bar 3 is moved up and down in cycles so that the bellows-like fold is realized in the web of material.
  • the folding beams 3, 4 expediently extend perpendicularly to the feed direction or to the longitudinal direction of the material web 1.
  • Two folding knives 5, 6 are preferably fixed to the upper folding beam 3 and, in the exemplary embodiment, project over the folding beam 3 on opposite sides of this folding beam 3.
  • the folding knives 5, 6 protrude beyond the edge of the folding beam 3 by their knife height h.
  • the lower second folding bar 4 has two counter-folding knives 8, which preferably and in the exemplary embodiment protrude on opposite sides of the second lower folding bar 4 over the edge of the folding bar 4, namely over their knife height h.
  • the two folding knives 5, 6 of the first upper folding bar 3 function during the folding as an upper knife and the two counter-folding knives 8 of the second lower folding bar 4 function as lower knives during the fold.
  • the folding knives 5, 6 of the first folding bar 3 have a different knife height h.
  • the knife height h of the counter-folding knife 8 of the second lower folding beam 4 is also expediently different.
  • the first upper folding bar 3 is preferably rotated and in the exemplary embodiment rotated about an axis of rotation extending parallel to its longitudinal direction, in particular and in the exemplary embodiment rotated by 180°. This is for example in the 3 indicated by a corresponding arrow.
  • this is also preferred and rotated in the exemplary embodiment about an axis of rotation oriented parallel to its longitudinal direction, specifically preferably and rotated by 180° in the exemplary embodiment.
  • Changing from one folding knife 5 to another folding knife 6 or from one counter-folding knife 8 to another counter-folding knife 8 can therefore be achieved by simply rotating the first folding bar 3 or the second folding bar 4 about the respective axis of rotation R.
  • This rotation change of the folding knife 5, 6 or counter-folding knife 8 can be carried out easily, quickly and with little effort. Complicated assembly and disassembly work is not necessary in comparison to the measures known from the prior art.
  • the operation of the folding device according to the invention only has to be briefly interrupted to change the knives. In this way, an increase in production speed is also achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Description

Die Erfindung betrifft eine Faltvorrichtung für flächige Materialbahnen, insbesondere zur Faltung bzw. zur kontinuierlichen Faltung von Materialbahnen auf Basis von Zellulose, Papier, Kunststoff und/oder Drahtgewebe und/oder auf Basis von Kombinationen oder Laminaten der vorgenannten Materialien. Bei der zu faltenden Materialbahn kann es sich um eine drahtgewebeverstärkte Materialbahn auf Basis von Zellulose, Papier, Kunststoff oder dergleichen Materialien handeln. Die erfindungsgemäße Faltvorrichtung weist einen Einlauftisch für die kontinuierliche Zuführung der Materialbahn auf sowie zumindest einen Faltbalken mit einem daran fixierten Faltmesser, das für bestimmte Falthöhen eingerichtet ist. Der Faltbalken ist taktweise auf- und abbewegbar, so dass mit dem auf die Materialbahn einwirkenden Faltmesser Falten in die Materialbahn eingebracht werden können. Zweckmäßigerweise wird die Materialbahn mittels dieser Faltvorrichtung faltenbalgartig gefaltet und zwar insbesondere kontinuierlich faltenbalgartig gefaltet.The invention relates to a folding device for flat material webs, in particular for folding or continuously folding material webs based on cellulose, paper, plastic and/or wire mesh and/or based on combinations or laminates of the aforementioned materials. The material web to be folded can be a wire mesh-reinforced material web based on cellulose, paper, plastic or similar materials. The folding device according to the invention has an infeed table for the continuous feeding of the web of material and at least one folding bar with a folding blade fixed thereto, which is set up for specific folding heights. The folding beam can be moved up and down in cycles, so that folds can be introduced into the material web with the folding knife acting on the material web. The web of material is expediently folded in the manner of bellows by means of this folding device, specifically in particular continuously folded in the manner of bellows.

Faltvorrichtungen der vorstehend genannten Art siehe z.B. US 5,961,435 A , sind aus der Praxis und aus dem Stand der Technik in verschiedenen Ausführungsvarianten bekannt. Die Faltmesser sind in der Regel mit Schrauben, Bolzen oder dergleichen Fixierungselementen an dem zugeordneten Faltbalken fixiert. Jedes Faltmesser ist für bestimmte Falthöhen eingerichtet und weist eine entsprechende Messerhöhe h auf.Folding devices of the type mentioned above, see for example US 5,961,435A , are known from practice and from the prior art in various variants. The folding knives are usually fixed to the associated folding beam with screws, bolts or similar fixing elements. Each folding knife is set up for specific folding heights and has a corresponding knife height h.

Wenn in der Materialbahn die Höhe der einzubringenden Falten geändert werden soll, muss bei den aus der Praxis bekannten Faltvorrichtungen das an dem Faltbalken fixierte Faltmesser zunächst demontiert werden und gegen ein weiteres Faltmesser alternativer Messerhöhe h ausgetauscht werden, der für alternative Falthöhen eingerichtet ist. Diese Maßnahmen sind aufwendig. Der kontinuierliche Betrieb der Vorrichtung wird durch ein solches Austauschen des Faltmessers über eine unerwünscht lange Zeitspanne unterbrochen. Im Übrigen ist die Demontage bzw. Montage der Faltmesser auch fehleranfällig. Diese bekannten Maßnahmen sind im Ergebnis also mit relativ hohem Aufwand und relativ hohen Kosten verbunden. Insoweit besteht Verbesserungsbedarf.If the height of the folds to be made in the material web is to be changed, in the folding devices known from practice the folding knife fixed to the folding beam must first be dismantled and replaced with another folding knife of an alternative knife height h, which is set up for alternative folding heights. These measures are expensive. The continuous operation of the device is interrupted by such a folding knife replacement for an undesirably long period of time. Incidentally, the disassembly or assembly of the folding knife is also error-prone. As a result, these known measures are also included relatively high effort and relatively high costs. In this respect, there is a need for improvement.

Demgegenüber liegt der Erfindung das technische Problem zugrunde, eine Faltvorrichtung der eingangs genannten Art anzugeben, bei der auf einfache, wenig aufwendige und funktionssichere Weise das Faltmesser des Faltbalkens gewechselt werden kann.In contrast, the invention is based on the technical problem of specifying a folding device of the type mentioned at the outset, in which the folding knife of the folding beam can be changed in a simple, inexpensive and functionally reliable manner.

Zur Lösung dieses technischen Problems lehrt die Erfindung eine Faltvorrichtung der eingangs beschriebenen Art, die dadurch gekennzeichnet ist, dass an dem Faltbalken zumindest ein weiteres zweites Faltmesser fixiert ist und dass durch Drehung des Faltbalkens um eine sich parallel zur Längsrichtung des Faltbalkens erstreckende Rotationsachse R anstelle des ersten Faltmessers das zweite Faltmesser für die Einbringung der Falten in die Materialbahn zur Verfügung steht.To solve this technical problem, the invention teaches a folding device of the type described at the beginning, which is characterized in that at least one further second folding knife is fixed to the folding bar and that by rotating the folding bar about an axis of rotation R extending parallel to the longitudinal direction of the folding bar instead of the first folding knife the second folding knife is available for introducing the folds into the web of material.

Es wurde bereits oben dargelegt, dass es sich bei den kontinuierlich zugeführten Materialbahnen vorzugsweise um Materialbahnen auf Basis von Zellulose, Papier, Kunststoff und/oder Drahtgewebe handelt oder um Kombinationen bzw. um Laminate aus diesen Materialien. Gemäß einer Ausführungsvariante werden die gefalteten Materialbahnen für Filtermedien eingesetzt. Es liegt im Rahmen der Erfindung, dass die Falten mit der Maßgabe in die Materialbahn eingebracht werden, dass die Materialbahn faltenbalgartig gefaltet wird.It has already been explained above that the continuously supplied webs of material are preferably webs of material based on cellulose, paper, plastic and/or wire mesh or combinations or laminates of these materials. According to one embodiment variant, the folded webs of material are used for filter media. It is within the scope of the invention that the folds are introduced into the web of material with the proviso that the web of material is folded like a bellows.

Es liegt weiterhin im Rahmen der Erfindung, dass ein Faltbalken und die daran angeschlossenen Faltmesser senkrecht bzw. im Wesentlichen senkrecht zur Zuführrichtung bzw. zur Längsrichtung der Materialbahn angeordnet sind. Ein Faltmesser erstreckt sich zweckmäßigerweise in Längsrichtung des zugeordneten Faltbalkens und zwar vorzugsweise über zumindest den größten Teil der Länge des zugeordneten Faltbalkens. Die Fixierung eines Faltmessers an dem zugeordneten Faltbalken erfolgt empfohlenermaßen mittels Fixierungselementen wie Schrauben, Bolzen, Klemmelementen oder dergleichen. Es liegt im Rahmen der Erfindung, dass ein Faltmesser über seine Messerhöhe h über den Rand des zugeordneten Faltbalkens vorkragt.It is also within the scope of the invention that a folding beam and the folding knives connected to it are arranged perpendicularly or essentially perpendicularly to the feed direction or to the longitudinal direction of the material web. A folding knife expediently extends in the longitudinal direction of the associated one Folding bar, preferably over at least most of the length of the associated folding bar. It is recommended that a folding knife be fixed to the associated folding beam by means of fixing elements such as screws, bolts, clamping elements or the like. It is within the scope of the invention for a folding knife to protrude beyond its knife height h over the edge of the associated folding beam.

Nach besonders bevorzugter Ausführungsform ist das erste Faltmesser und das zumindest eine weitere bzw. zweite Faltmesser jeweils für unterschiedliche Falthöhen eingerichtet. Zweckmäßigerweise kragen die zumindest zwei Faltmesser unterschiedlich weit über den zugeordneten Faltbalken vor. - Eine sehr empfohlene Ausführungsform der Erfindung ist dadurch gekennzeichnet, dass das erste Faltmesser und ein weiteres zweites Faltmesser an gegenüberliegenden Längsseiten des Faltbalkens angeordnet sind. Vorzugsweise steht dann durch Drehung des Faltbalkens um die Rotationsachse um einen Drehwinkel von 150° bis 210°, insbesondere von 160° bis 200°, bevorzugt von 170° bis 190° und sehr bevorzugt von 175° bis 185° das jeweils andere Faltmesser zum Falten zur Verfügung. Nach einer sehr bewährten Ausführungsform sind die beiden Faltmesser an gegenüberliegenden Längsseiten des Faltbalkens angeordnet und durch Drehung des Faltbalkens um die Rotationsachse um 180° bzw. um etwa 180° steht das jeweils andere Faltmesser zum Falten zur Verfügung.According to a particularly preferred embodiment, the first folding knife and the at least one further or second folding knife are each set up for different folding heights. The at least two folding knives expediently protrude to different extents over the associated folding beam. - A highly recommended embodiment of the invention is characterized in that the first folding knife and another second folding knife are arranged on opposite longitudinal sides of the folding beam. By rotating the folding bar around the axis of rotation by an angle of rotation of 150° to 210°, in particular 160° to 200°, preferably 170° to 190° and very preferably 175° to 185°, the respective other folding knife is then preferably ready for folding to disposal. According to a very proven embodiment, the two folding knives are arranged on opposite long sides of the folding bar and by rotating the folding bar about the axis of rotation by 180° or by about 180°, the other folding knife is available for folding.

Nach einer Ausführungsvariante der Erfindung sind zumindest drei Faltmesser mit gegenseitigem Abstand an dem Faltbalken fixiert und durch Drehung des Faltbalkens um einen dem Abstand der Faltmesser voneinander entsprechenden Drehwinkel erfolgt ein Wechsel der Faltmesser. Zweckmäßigerweise sind die zumindest drei bzw. die drei Faltmesser gleichmäßig über den Umfang des Faltbalkens verteilt fixiert. Die Drehung des Faltbalkens zum Wechsel eines Faltmessers erfolgt dann zweckmäßigerweise um 120° bzw. um etwa 120° oder um 240° bzw. um etwa 240°.According to one embodiment of the invention, at least three folding knives are fixed to the folding bar at a mutual distance and the folding knives are changed by rotating the folding bar by an angle of rotation corresponding to the distance between the folding knives. Expediently, the at least three or the three Folding knife fixed evenly distributed over the circumference of the folding beam. The rotation of the folding bar to change a folding blade is then expediently carried out by 120° or by approximately 120° or by 240° or by approximately 240°.

Es liegt im Rahmen der Erfindung, dass die Faltmesser des ersten Faltbalkens als Obermesser eingerichtet sind und dass ein zweiter Faltbalken unterhalb des ersten Faltbalkens angeordnet ist, der zumindest ein Gegen-Faltmesser aufweist, das als Untermesser zur Wechselwirkung mit einem als Obermesser funktionierenden Faltmesser des ersten Faltbalkens eingerichtet ist. Die Angabe, dass der zweite Faltbalken unterhalb des ersten Faltbalkens angeordnet ist, bezieht sich auf den aufgestellten Zustand der Vorrichtung mit oberseitigem ersten Faltbalken und unterseitigem zweiten Faltbalken. Die Wechselwirkung zwischen einem als Obermesser funktionierenden Faltmesser des ersten Faltbalkens und einem als Untermesser funktionierenden Gegen-Faltmesser des zweiten Faltbalkens geht zweckmäßigerweise wie folgt von statten: Bei der Auf- und Abbewegung des ersten Faltbalkens gleitet ein als Obermesser funktionierendes Faltmesser des ersten Faltbalkens unmittelbar flächig an einem als Untermesser funktionierenden Gegen-Faltmesser des zweiten Faltbalkens vorbei. Auf diese Weise können funktionssicher Falten in der kontinuierlich zugeführten Materialbahn gebildet werden und die Materialbahn kann auf diese Weise insbesondere faltenbalgartig gefaltet werden.It is within the scope of the invention that the folding knives of the first folding bar are set up as upper knives and that a second folding bar is arranged below the first folding bar, which has at least one counter-folding knife, which acts as a lower knife for interacting with a folding knife of the first working as an upper knife Folding beam is set up. The statement that the second folding bar is arranged below the first folding bar relates to the erected state of the device with the first folding bar on the upper side and the second folding bar on the lower side. The interaction between a folding knife of the first folding bar functioning as an upper knife and a counter-folding knife of the second folding bar functioning as a lower knife takes place as follows: During the up and down movement of the first folding bar, a folding knife of the first folding bar functioning as an upper knife slides directly over the surface a counter-folding knife of the second folding beam that functions as a bottom knife. In this way, functionally reliable folds can be formed in the continuously fed web of material and the web of material can in this way be folded in particular in the manner of bellows.

Nach einer Ausführungsform der Erfindung weist der zweite Faltbalken zumindest zwei Gegen-Faltmesser auf. Vorzugsweise steht dann durch Drehung des zweiten Faltbalkens um eine sich parallel zur Längsrichtung des zweiten Faltbalkens erstreckende zweite Rotationsachse wahlweise das an dem zweiten Faltbalken fixierte erste oder zweite Gegen-Faltmesser als Untermesser zur Verfügung. Empfohlenermaßen sind zwei Gegen-Faltmesser an gegenüberliegenden Seiten bzw. an gegenüberliegenden Längsseiten des zweiten Faltbalkens fixiert. Zweckmäßigerweise erfolgt ein Wechsel zwischen den beiden Gegen-Faltmessern durch Drehung des Faltbalkens um seine Rotationsachse und zwar bevorzugt durch Drehung um einen Drehwinkel von 180° bzw. um etwa 180°. Zumindest drei Gegen-Faltmesser, insbesondere drei Gegen-Faltmesser sind als Untermesser an dem zweiten Faltbalken fixiert .According to one embodiment of the invention, the second folding bar has at least two counter-folding knives. By rotating the second folding bar about a second axis of rotation extending parallel to the longitudinal direction of the second folding bar, the first or second counter-folding blade fixed to the second folding bar is then preferably available as the lower blade. Two counter-folding knives are recommended fixed on opposite sides or on opposite longitudinal sides of the second folding bar. Expediently, a changeover between the two counter-folding knives takes place by rotating the folding beam about its axis of rotation, specifically preferably by rotating it through an angle of rotation of 180° or approximately 180°. At least three counter-folding knives, in particular three counter-folding knives, are fixed as lower knives on the second folding beam.

Vorzugsweise gelten für den zweiten Faltbalken bzw. für die daran fixierten Gegen-Faltmesser die gleichen Merkmale und Maßnahmen wie zum ersten Faltbalken beschrieben und zwar insbesondere bezüglich Anzahl und/oder Anordnung und/oder Fixierung und/oder Drehung bzw. Drehwinkel der Faltmesser bzw. Gegen-Faltmesser. Zwecks Vermeidung von Wiederholungen wird deshalb auf die Merkmale des ersten Faltbalkens verwiesen.The same features and measures as described for the first folding bar preferably apply to the second folding bar or to the counter-folding knives fixed thereto, in particular with regard to the number and/or arrangement and/or fixing and/or rotation or rotation angle of the folding knives or counters -folding knife. In order to avoid repetition, reference is therefore made to the features of the first folding beam.

Eine besonders empfohlene Ausführungsform der Erfindung ist dadurch gekennzeichnet, dass jedes Gegen-Faltmesser des zweiten Faltbalkens bezüglich der gewünschten Falthöhen an ein Faltmesser des ersten Faltbalkens angepasst ist und dass vorzugsweise durch Drehung des ersten Faltbalkens sowie durch Drehung des zweiten Faltbalkens ein Faltmesser und ein komplementäres Gegen-Faltmesser in eine Faltposition überführbar sind. Faltposition von Faltmesser und Gegen-Faltmesser meint im Rahmen der Erfindung insbesondere, dass nach der Drehung des ersten bzw. des zweiten Faltbalkens das Faltmesser mit dem entsprechenden Gegen-Faltmesser beim anschließenden Faltvorgang wechselwirkt.A particularly recommended embodiment of the invention is characterized in that each counter-folding knife of the second folding bar is adapted to a folding knife of the first folding bar with regard to the desired folding heights and that a folding knife and a complementary counter -Folding knives can be converted into a folding position. In the context of the invention, the folding position of folding knife and counter-folding knife means in particular that after the rotation of the first or second folding bar, the folding knife interacts with the corresponding counter-folding knife during the subsequent folding process.

Für einen Wechsel eines Faltmessers des ersten Faltbalkens und für einen Wechsel des Gegen-Faltmessers des zweiten Faltbalkens können die beiden Faltbalken gleichzeitig oder in etwa gleichzeitig um ihre Rotationsachse gedreht werdenTo change a folding knife of the first folding bar and to change the counter-folding knife of the second folding bar, the two folding bars can be rotated around their axis of rotation at the same time or approximately at the same time

Grundsätzlich können die beiden Faltbalken aber auch nacheinander verdreht werden.In principle, however, the two folding beams can also be rotated one after the other.

Es empfiehlt sich, dass die Messerhöhe h1 eines ersten Faltmessers mindestens 1,2-mal, vorzugsweise mindestens 1,3-mal, bevorzugt mindestens 1,4-mal und sehr bevorzugt mindestens 1,5-mal so groß ist wie die Messerhöhe h2 eines zweiten Faltmessers des Faltbalkens. Fernerhin ist bewährtermaßen die Messerhöhe h1 eines ersten Gegen-Faltmessers mindestens 1,2-mal, vorzugsweise mindestens 1,3-mal, bevorzugt mindestens 1,4-mal und sehr bevorzugt mindestens 1,5-mal so groß wie die Messerhöhe h2 eines zweiten Gegen-Faltmessers des zweiten Faltbalkens.It is recommended that the knife height h 1 of a first folding knife is at least 1.2 times, preferably at least 1.3 times, preferably at least 1.4 times and very preferably at least 1.5 times the knife height h 2 of a second folding knife of the folding beam. Furthermore, as has been proven, the knife height h 1 of a first counter-folding knife is at least 1.2 times, preferably at least 1.3 times, preferably at least 1.4 times and very preferably at least 1.5 times as large as the knife height h 2 a second counter folding knife of the second folding beam.

Der Erfindung liegt die Erkenntnis zugrunde, dass mit der erfindungsgemäßen Faltvorrichtung ein sehr einfacher und wenig aufwendiger Wechsel von einem Faltmesser bzw. Gegen-Faltmesser zu einem weiteren Faltmesser bzw. Gegen-Faltmesser möglich ist. Aufwendige Demontagearbeiten und Montagearbeiten entfallen bei der erfindungsgemäßen Vorrichtung. Lediglich durch Drehung der Faltbalken ist ein zügiger Wechsel der Obermesser bzw. Untermesser möglich. Insoweit wird auch der Betrieb bzw. der kontinuierliche Betrieb der Vorrichtung nur kurzzeitig unterbrochen. Hervorzuheben ist, dass diese vorteilhaften Maßnahmen mit relativ geringen Kosten realisierbar sind. Die Erfindung zeichnet sich somit durch Einfachheit, geringen Aufwand und geringen Kostenaufwand aus.The invention is based on the knowledge that with the folding device according to the invention a very simple and inexpensive change from one folding knife or counter-folding knife to another folding knife or counter-folding knife is possible. Elaborate disassembly and assembly work is not required with the device according to the invention. A quick change of the upper and lower knives is only possible by rotating the folding beam. In this respect, the operation or the continuous operation of the device is only briefly interrupted. It should be emphasized that these advantageous measures can be implemented at relatively low cost. The invention is thus characterized by simplicity, little effort and low cost.

Nachfolgend wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen in schematischer Darstellung:

Fig. 1
eine Ansicht der erfindungsgemäßen Vorrichtung,
Fig. 2
eine Seitenansicht eines Faltbalkens der erfindungsgemäßen Vorrichtung mit zwei angeschlossenen Faltmessern und
Fig. 3
einen Schnitt durch den Gegenstand gemäß Fig. 2.
The invention is explained in more detail below with reference to a drawing that merely shows an exemplary embodiment. They show in a schematic representation:
1
a view of the device according to the invention,
2
a side view of a folding beam of the device according to the invention with two connected folding knives and
3
according to a section through the object 2 .

Die Figuren zeigen eine erfindungsgemäße Faltvorrichtung für flächige Materialbahnen 1, und zwar zur kontinuierlichen Faltung dieser Materialbahnen 1. Im Ausführungsbeispiel mag es sich um eine drahtgewebeverstärkte Materialbahn 1 auf Basis von Zellulose handeln. Zweckmäßigerweise und im Ausführungsbeispiel wird die kontinuierlich zugeführte Materialbahn 1 faltenbalgartig gefaltet. Der vergrößerte Ausschnitt aus der Fig. 1 zeigt die in die Materialbahn 1 eingebrachten Falten 7 bei einer solchen faltenbalgartigen Faltung. - In der Fig. 1 ist weiterhin dargestellt, dass die Materialbahn 1 über einen Einlauftisch 2 kontinuierlich zugeführt wird, und zwischen zwei in Zuführrichtung hinter dem Einlauftisch 2 angeordneten Faltbalken 3, 4 hindurchgeführt wird. Zur Erzeugung der Faltung wird der erste obere Faltbalken 3 taktweise auf- und abbewegt, so dass die faltenbalgartige Faltung in der Materialbahn realisiert wird. Zweckmäßigerweise erstrecken sich die Faltbalken 3, 4 senkrecht zur Zuführrichtung bzw. zur Längsrichtung der Materialbahn 1.The figures show a folding device according to the invention for flat material webs 1, specifically for the continuous folding of these material webs 1. In the exemplary embodiment, it may be a wire mesh-reinforced material web 1 based on cellulose. Expediently and in the exemplary embodiment, the continuously fed web of material 1 is folded in the manner of bellows. The enlarged section of the 1 shows the folds 7 introduced into the material web 1 with such a bellows-like fold. - In the 1 is also shown that the material web 1 is fed continuously via an infeed table 2 and is guided between two folding bars 3, 4 arranged behind the infeed table 2 in the feed direction. To produce the fold, the first upper folding bar 3 is moved up and down in cycles so that the bellows-like fold is realized in the web of material. The folding beams 3, 4 expediently extend perpendicularly to the feed direction or to the longitudinal direction of the material web 1.

An dem oberen Faltbalken 3 sind bevorzugt und im Ausführungsbeispiel zwei Faltmesser 5, 6 fixiert, die an gegenüberliegenden Seiten dieses Faltbalkens 3 über den Faltbalken 3 vorkragen. Dabei kragen die Faltmesser 5, 6 über ihre Messerhöhe h über den Rand des Faltbalkens 3 vor. - Empfohlenermaßen und im Ausführungsbeispiel weist der untere zweite Faltbalken 4 zwei Gegen-Faltmesser 8 auf, die vorzugsweise und im Ausführungsbeispiel an gegenüberliegenden Seiten des zweiten unteren Faltbalkens 4 über den Rand des Faltbalkens 4 vorkragen, und zwar über ihre Messerhöhe h. Die beiden Faltmesser 5, 6 des ersten oberen Faltbalkens 3 funktionieren bei der Faltung als Obermesser und die beiden Gegen-Faltmesser 8 des zweiten unteren Faltbalkens 4 funktionieren bei der Faltung als Untermesser. Die Faltmesser 5, 6 des ersten Faltbalkens 3 weisen eine unterschiedliche Messerhöhe h auf. Zweckmäßigerweise ist auch die Messerhöhe h der Gegen-Faltmesser 8 des zweiten unteren Faltbalkens 4 unterschiedlich. Um bei der Faltung von einem Faltmesser 5 zu dem anderen Faltmesser 6 zu wechseln, wird der erste obere Faltbalken 3 bevorzugt und im Ausführungsbeispiel um eine sich parallel zu seiner Längsrichtung erstreckende Rotationsachse gedreht, und zwar insbesondere und im Ausführungsbeispiel um 180° gedreht. Das wird beispielsweise in der Fig. 3 durch einen entsprechenden Pfeil angedeutet. Zum Wechsel der Gegen-Faltmesser 8 des zweiten unteren Faltbalkens 4 wird auch dieser bevorzugt und im Ausführungsbeispiel um eine parallel zu seiner Längsrichtung orientierte Rotationsachse gedreht, und zwar bevorzugt und im Ausführungsbeispiel um 180° gedreht.Two folding knives 5, 6 are preferably fixed to the upper folding beam 3 and, in the exemplary embodiment, project over the folding beam 3 on opposite sides of this folding beam 3. The folding knives 5, 6 protrude beyond the edge of the folding beam 3 by their knife height h. - Recommended and in the exemplary embodiment, the lower second folding bar 4 has two counter-folding knives 8, which preferably and in the exemplary embodiment protrude on opposite sides of the second lower folding bar 4 over the edge of the folding bar 4, namely over their knife height h. The two folding knives 5, 6 of the first upper folding bar 3 function during the folding as an upper knife and the two counter-folding knives 8 of the second lower folding bar 4 function as lower knives during the fold. The folding knives 5, 6 of the first folding bar 3 have a different knife height h. The knife height h of the counter-folding knife 8 of the second lower folding beam 4 is also expediently different. In order to switch from one folding knife 5 to the other folding knife 6 during folding, the first upper folding bar 3 is preferably rotated and in the exemplary embodiment rotated about an axis of rotation extending parallel to its longitudinal direction, in particular and in the exemplary embodiment rotated by 180°. This is for example in the 3 indicated by a corresponding arrow. To change the counter-folding knife 8 of the second lower folding bar 4, this is also preferred and rotated in the exemplary embodiment about an axis of rotation oriented parallel to its longitudinal direction, specifically preferably and rotated by 180° in the exemplary embodiment.

Ein Wechsel von einem Faltmesser 5 zu einem weiteren Faltmesser 6 bzw. von einem Gegen-Faltmesser 8 zu einem weiteren Gegen-Faltmesser 8 kann also durch eine einfache Drehung des ersten Faltbalkens 3 bzw. des zweiten Faltbalkens 4 um die jeweilige Rotationsachse R erreicht werden. Dieser Rotationswechsel der Faltmesser 5, 6 bzw. Gegen-Faltmesser 8 ist einfach, zügig und mit geringem Aufwand durchführbar. Aufwendige Montage- und Demontagearbeiten entfallen im Vergleich zu den aus dem Stand der Technik bekannten Maßnahmen. Für einen Wechsel der Messer muss der Betrieb der erfindungsgemäßen Faltvorrichtung im Gegensatz zu den aus der Praxis bekannten Faltvorrichtungen lediglich kurzzeitig unterbrochen werden. Auf diese Weise wird auch eine Steigerung der Produktionsgeschwindigkeit erreicht.Changing from one folding knife 5 to another folding knife 6 or from one counter-folding knife 8 to another counter-folding knife 8 can therefore be achieved by simply rotating the first folding bar 3 or the second folding bar 4 about the respective axis of rotation R. This rotation change of the folding knife 5, 6 or counter-folding knife 8 can be carried out easily, quickly and with little effort. Complicated assembly and disassembly work is not necessary in comparison to the measures known from the prior art. In contrast to the folding devices known from practice, the operation of the folding device according to the invention only has to be briefly interrupted to change the knives. In this way, an increase in production speed is also achieved.

Claims (11)

  1. A folding device for flat material webs (1), in particular for continuously folding material webs based on cellulose, paper, plastic and/or wire mesh, as well as in the form of multilayer laminates comprised of the aforementioned materials, with an infeed table (2) for continuously feeding the material web (1) and with at least one folding bar (3, 4) with a first folding knife (5, 6) fixed thereto, which is set for specific folding heights, wherein the folding bar (3, 4) can be moved up and down in cycles, so that folds (7) can be introduced into the material web (1) with the folding knife (5) acting on the material web (1), characterized in that at least one additional second folding knife (6) is fixed to the folding bar (3, 4), and that turning the folding bar (3, 4) around an axis of rotation R extending parallel to the longitudinal direction of the folding bar (3, 4) makes the second folding knife (6) available for introducing the folds (7) into the material web (1) instead of the first folding knife (5) .
  2. The device according to claim 1, characterized in that the folds (7) can be introduced into the material web (1) with the condition that the material web (1) can be folded like a bellows.
  3. The device according to one of claims 1 or 2, characterized in that the folding bar (3, 4) and folding knives (5, 6) are arranged perpendicular or essentially perpendicular to the feeding direction or longitudinal direction of the material web (1).
  4. The device according to one of claims 1 to 3, characterized in that the folding knives (5, 6) protrude over the edge of the allocated folding bar (3, 4) by their knife height (h).
  5. The device according to one of claims 1 to 4, characterized in that the first folding knife (5) and the at least one additional folding knife (6) have different knife heights (h).
  6. The device according to one of claims 1 to 5, characterized in that the first folding knife (5) and an additional second folding knife (6) are arranged on opposing longitudinal sides of the folding bar (3, 4), and that turning the folding bar (3, 4) by an angle of rotation of 150° to 210°, in particular 160° to 200°, preferably of 170° to 190° and very preferably 175° to 185°, preferably makes the respective other folding knife (5, 6) available for folding.
  7. The device according to one of claims 1 to 6, characterized in that at least three folding knives (5, 6) are fixed on the folding bar (3, 4) spaced mutually apart, and that turning the folding bar (3, 4) by an angle of rotation corresponding to the distance between the folding knives (5, 6) causes a switching of the folding knives (5, 6) to take place.
  8. The device according to one of claims 1 to 7, characterized in that the folding knives (5, 6) of the first folding bar (3) are set up as the upper knives, and that a second folding bar (4) is arranged below the first folding bar (3), and has at least one counter-folding knife (8), which is set up as the lower knife for interacting with a folding knife (5, 6) of the first folding bar (3) that functions as the upper knife.
  9. The device according to claim 8, characterized in that the second folding bar (4) has at least two counter-folding knives (8), and that turning the second folding bar (4) around a second axis of rotation extending parallel to the longitudinal direction of the second folding bar (4) selectively makes the first or second counter-folding knife (8) fixed to the second folding bar (4) available as the lower knife.
  10. The device according to one of claims 8 or 9, characterized in that each counter-folding knife (8) of the second folding bar (4) is adjusted in terms of the desired folding heights to a folding knife (5, 6) of the first folding bar (3), and that turning the first folding bar (3) and turning the second folding bar (4) makes it possible to transfer the folding knife (5, 6) and a complementary counter-folding knife (8) into a folding position.
  11. The device according to one of claims 8 to 10, characterized in that the knife height (h1) of a first folding knife (5) is at least 1.2 times, preferably at least 1.3 times, and primarily 1.4 times as large as the knife height (h2) of a second folding knife (6) of the folding bar (3) and/or wherein the knife height h1 of a first counter-folding knife (8) is at least 1.2 times, preferably at least 1.3 times, primarily at least 1.4 times as large as the knife height (h2) of a second counter-folding knife (8) of the second folding bar (4) .
EP19196461.8A 2019-09-10 2019-09-10 Folding device for flat material webs Active EP3792208B1 (en)

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Application Number Priority Date Filing Date Title
EP19196461.8A EP3792208B1 (en) 2019-09-10 2019-09-10 Folding device for flat material webs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19196461.8A EP3792208B1 (en) 2019-09-10 2019-09-10 Folding device for flat material webs

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EP3792208A1 EP3792208A1 (en) 2021-03-17
EP3792208B1 true EP3792208B1 (en) 2022-11-09

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627367A (en) * 1947-07-16 1949-08-08 Bernard Joseph Pilliner Improvements relating to crimping or pleating
JP2522533B2 (en) * 1988-12-06 1996-08-07 株式会社新興製作所 Folding mechanism for continuous paper
JP2565766Y2 (en) * 1992-03-02 1998-03-18 株式会社新興製作所 Continuous paper folding mechanism
DE9412210U1 (en) * 1994-07-28 1994-12-01 Schaefer Hermann Folding device

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