EP2117791B1 - Installation for applying glue to fibers for the production of fiberboard, especially mdf board or similar wood material board - Google Patents

Installation for applying glue to fibers for the production of fiberboard, especially mdf board or similar wood material board Download PDF

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Publication number
EP2117791B1
EP2117791B1 EP07819379A EP07819379A EP2117791B1 EP 2117791 B1 EP2117791 B1 EP 2117791B1 EP 07819379 A EP07819379 A EP 07819379A EP 07819379 A EP07819379 A EP 07819379A EP 2117791 B1 EP2117791 B1 EP 2117791B1
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EP
European Patent Office
Prior art keywords
fibre
line
fiber
outlet pipe
fibers
Prior art date
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EP07819379A
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German (de)
French (fr)
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EP2117791A1 (en
Inventor
Dieter Aengenvoort
Michael SCHÖLER
Klaus Schürmann
Lothar Sebastian
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Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
    • B27N1/0254—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with means for spraying the agent on the material before it is introduced in the mixer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0263—Mixing the material with binding agent by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1798—Surface bonding means and/or assemblymeans with work feeding or handling means with liquid adhesive or adhesive activator applying means

Definitions

  • the invention relates to a plant for gluing fibers for the production of fiberboard, in particular MDF boards or the like wood-based panels, with a fiber feed device with at least one fiber feed line which can be acted upon by conveying air for the fiber transport and which opens into a fiber outlet tube via an arcuate fiber deflection line, with a downstream of the fiber outlet pipe chute, with a z. B. arranged between the fiber outlet tube and the chute gluing device with spray nozzles for spraying emerging from the fiber outlet tube and entering the chute fibers with glue drops and with a chute downstream catcher for collecting and possibly discharging the fibers.
  • - MDF boards in the context of the invention means medium density fiber plates.
  • the collecting device preferably has an air-permeable conveyor belt for collecting and optionally discharging the fibers and a suction device arranged below the conveyor belt for sucking air out of the chute through the conveyor belt.
  • Fiber exit tube and chute are preferably arranged substantially in a vertical orientation.
  • a jacket air supply device is preferably provided with one or more jacket air ducts for generating a jacket air flow surrounding the fiber stream in the chute, wherein the jacket air can also be sucked with the suction apparatus.
  • the invention has for its object to provide a system of the embodiment described above, with which fibers for the production of fiberboard, especially MDF boards, can glue properly in a rational and economical manner.
  • a homogeneous gluing of the entire fiber flow should be achieved with low equipment and design effort.
  • the invention teaches in a generic system that the Faserumlenk endeavor is formed at least partially or in sections by means of one or more substantially axially extending partitions as a split line with multiple sub-lines.
  • the Faserzufish Anlagen region, z. B. be formed in a subsequent to the Faserumlenk endeavor area by means of one or more extending in a substantially axial direction partitions as a split lines with multiple sub-lines.
  • the fiber outlet tube, which adjoins the Faserumlenk admir partially, z.
  • a subsequent to the Faserumlenk effet area is formed by means of one or more axially extending partitions as a split lines with multiple sub-lines.
  • Fiber feed line, Faserumlenk ein and / or fiber outlet tube can thereby have circular, oval, elliptical or rectangular or square cross-section.
  • the fiber outlet tube may preferably at least partially have a round cross-section.
  • the invention is based on the recognition that in conventional Faserzu operations- or deflection lines, which are designed as simple tubes with a rectangular or circular cross-section, there is a risk of "segregation" of the fibers. Particularly in the area of fiber deflection, it may happen that - especially with large pipe diameters - the fibers concentrate in an area of the pipe cross-section when emerging from the fiber deflection pipe.
  • the division according to the invention of the fiber deflection line and / or the fiber supply line and / or the fiber outlet tube effectively counteracts such segregation. Because the fiber stream is divided by the individual sub-lines into several streams, so that segregation may possibly still occur within the individual streams, which have a much smaller cross-section than the entire pipe cross-section.
  • the Faserumlenk Gustav and / or the fiber supply line and / or the fiber supply tube at least partially by means of partitions in two to ten, z. B. are divided into three to eight sub-lines. Preferably, four to six sub-lines are used.
  • the individual cross sections of the sub-lines may have different cross-section, z. B. also have rectangular cross-section. Especially when using cables with a round cross-section However, more complex cross-sectional shapes of the individual lines may occur.
  • the Faserumlenk endeavor has here as a part-circular deflection with a predetermined bottom diameter a deflection angle of about 90 ° to about 180 °.
  • a particularly compact design is made possible at a deflection angle of 180 °, ie the fibers are fed from bottom to top via a substantially vertically arranged fiber feed line, then deflected by the fiber deflection line through an angle of 180 ° and finally via the also substantially vertically arranged Fiber exit tube introduced into the region of the gluing device, from where they then enter into the also substantially vertically arranged chute.
  • the invention proposes that the arc diameter of the fiber deflection line is approximately 3 times to 10 times, preferably 5 times to 10 times, the diameter of the line.
  • the invention therefore proposes that the fibers are transferred from the fiber supply line via the Faserumlenktechnisch in the fiber outlet tube over an elongated arc, which opens into a straight vertical tube, namely the fiber outlet tube.
  • Such a relatively large arc diameter counteracts further separation of the fibers, so that also by a homogeneous fiber flow is generated within the fiber outlet tube, which then enters the Beleimungszone.
  • the invention proposes in an advantageous embodiment, that the substantially vertically arranged and substantially straight fiber outlet tube to form a calming section has a length which is approximately 2-fold to 20-fold, z. B. is 5 times to 15 times, preferably 10 times to 15 times the tube diameter of the fiber outlet tube.
  • a long calming section or such a long fiber outlet pipe makes it possible for any segregation occurring in the area of the fiber deflection to be eliminated, so that then out of the Fiber exit tube an extremely homogeneous fiber jet enters the gluing zone.
  • a plant for gluing fibers 1 for the production of fiberboard, in particular MDF boards is shown.
  • the system is set up for continuous operation and has a fiber feed device 2 with a fiber feed line 3 which can be charged with conveying air F for the fiber transport and which opens into a fiber outlet tube 5 via an arcuate fiber deflection line 4.
  • This downstream substantially straight and trained fiber outlet pipe 5 is a chute 6 arranged downstream.
  • a gluing device 7 with a plurality of spray nozzles 8 for spraying the emerging from the fiber outlet tube 5 and entering the chute 6 fibers 1 is arranged with glue drops in a Beleimungszone.
  • the chute 6 is arranged downstream of a collecting device 9 for collecting and discharging the glued fibers.
  • This collecting device 9 has an air-permeable conveyor belt 10 for collecting and discharging the fibers and a suction device 11 arranged below the conveyor belt for sucking air out of the chute 6 through the conveyor belt 10.
  • This conveyor belt 10 is designed as a sieve belt or filter belt. Consequently, the emerging from the fiber outlet tube 5 and then glued fibers pass through the chute 6 on the conveyor belt 10. On this conveyor belt 10, the glued fibers come to rest. Possibly. in the chute 6 sinking unused glue reaches the arranged on the conveyor belt 10 fibers, so that a complete Leimaus disturb is ensured and contamination of the system can be reliably avoided by unused glue.
  • the chute 6 has a downwardly widening cross section. Furthermore, it is indicated in the figure that z. B. below the gluing device 7, and consequently at the upper end of the chute 6 a jacket air supply 12 is provided with one or more sheath air ducts 13 for generating a surrounding the fiber flow in the chute 6 sheath air flow M. Consequently, both the conveying air F and the jacket air M as well as any ambient air U entering or entering the system are extracted via the suction device 11.
  • the fiber deflection line 4 (eg over its entire length) is designed as a divided line with a plurality of sub-lines 15 by means of one or more partition walls 14 extending essentially in the axial direction.
  • Faserumlenktechnisch 4 means according to Fig. 2 the arcuate line between on the one hand the vertical and straight formed fiber supply line 3 and on the other hand, the vertical and straight formed fiber outlet 5.
  • sections of the fiber supply line 3 and / or the fiber outlet tube 5 also have such partitions and consequently also formed as a split line and a plurality of sub-lines, wherein the division preferably corresponds to the division of the Faserumlenk Koch. This is not shown in the figures.
  • both the fiber supply line 3 and the Faserumlenk ein 4 are formed with a rectangular or square cross-section.
  • the fiber outlet tube 5 has an adjoining directly to the Faserumlenk endeavor 4 upper section 5a with also rectangular or square cross-section, then followed by a transition piece 5b, a lower section 5c with a circular cross-section, so that in the lower region of the fiber outlet tube 5, a fiber stream is generated with a round cross-section, which then enters the gluing zone. It is in Fig. 2 indicated that the fiber outlet tube 5 at its outlet end has a "nozzle-like" diameter reduction 5d.
  • the Faserumlenk Koch 4 is divided into only four sub-lines 15, wherein the rectangular or square line cross-section is then divided into also rectangular or square sub-line cross-sections.
  • the Faserumlenk App is designed as a partial circular deflection with a predetermined arc diameter b and a deflection angle of about 180 °.
  • the fibers 1 thus reach from the vertical fiber feed line 3 after a deflection by a deflection angle of 180 ° over an arc with a bow diameter b in the also vertical fiber outlet pipe 5.
  • This Faserumlenk App 4 is formed as a long drawn sheet, d. H .
  • the arc diameter b of the Faserumlenk App is approximately 5 times to 10 times the diameter of the pipe d.
  • Fig. 2 recognizable that the substantially vertically arranged and substantially straight fiber outlet tube a Has (full) length L, which is approximately 10 times to 15 times the tube diameter D of the fiber outlet tube 5.
  • Pipe diameter D here means the largest diameter of the round cross-sectional area.
  • diameter of these wires or pipes means the edge length of the long edge of such a rectangle.
  • the invention is not limited to the gluing of fibers for the production of fiberboard, moreover, the plant according to the invention is also suitable for gluing chips for the production of chipboard or OSB boards, taking into account a corresponding dimensioning of the individual units.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The system has a fiber supply device (2) with a fiber supply line (3) that is supplied with feed air (F) for transporting fibers (1). The line opens out into a fiber output pipe (5) through a curved fiber deflection line (4). A chute (6) is arranged downstream to the pipe (5). A coating device (7) has spray nozzles to spray droplets of glue on the fibers, which enter into the chute from the pipe (5). A collecting device (9) collects the fibers. The line (4) is modularly formed as a divided line with multiple partial lines by a partition wall that runs in an axial direction.

Description

Die Erfindung betrifft eine Anlage zum Beleimen von Fasern für die Herstellung von Faserplatten, insbesondere MDF-Platten oder dergleichen Holzwerkstoffplatten,
mit einer Faserzuführungseinrichtung mit zumindest einer mit Förderluft für den Fasertransport beaufschlagbaren Faserzuführungsleitung, welche über eine bogenförmige Faserumlenkleitung in ein Faseraustrittsrohr mündet,
mit einem dem Faseraustrittsrohr nachgeordneten Fallschacht,
mit einer z. B. zwischen dem Faseraustrittsrohr und dem Fallschacht angeordneten Beleimungsvorrichtung mit Sprühdüsen zum Besprühen der aus dem Faseraustrittsrohr austretenden und in den Fallschacht eintretenden Fasern mit Leimtropfen und mit einer dem Fallschacht nachgeordneten Auffangvorrichtung zum Auffangen und ggf. Abführen der Fasern. - MDF-Platten meint im Rahmen der Erfindung Medium Density Fiber-Platten. Die Auffangvorrichtung weist vorzugsweise ein luftdurchlässiges Transportband zum Auffangen und ggf. Abführen der Fasern sowie eine unterhalb des Transportbandes angeordnete Saugvorrichtung zum Absaugen von Luft aus dem Fallschacht durch das Transportband hindurch auf. Faseraustrittsrohr und Fallschacht sind bevorzugt im Wesentlichen in vertikaler Orientierung angeordnet. Ferner ist vorzugsweise eine Mantelluftzuführeinrichtung mit einer oder mehreren Mantelluftleitungen zur Erzeugung eines den Faserstrom im Fallschacht umgebenden Mantelluftstroms vorgesehen, wobei die Mantelluft mit der Saugvorrichtung ebenfalls absaugbar ist.The invention relates to a plant for gluing fibers for the production of fiberboard, in particular MDF boards or the like wood-based panels,
with a fiber feed device with at least one fiber feed line which can be acted upon by conveying air for the fiber transport and which opens into a fiber outlet tube via an arcuate fiber deflection line,
with a downstream of the fiber outlet pipe chute,
with a z. B. arranged between the fiber outlet tube and the chute gluing device with spray nozzles for spraying emerging from the fiber outlet tube and entering the chute fibers with glue drops and with a chute downstream catcher for collecting and possibly discharging the fibers. - MDF boards in the context of the invention means medium density fiber plates. The collecting device preferably has an air-permeable conveyor belt for collecting and optionally discharging the fibers and a suction device arranged below the conveyor belt for sucking air out of the chute through the conveyor belt. Fiber exit tube and chute are preferably arranged substantially in a vertical orientation. Furthermore, a jacket air supply device is preferably provided with one or more jacket air ducts for generating a jacket air flow surrounding the fiber stream in the chute, wherein the jacket air can also be sucked with the suction apparatus.

Anlagen zum Beleimen von Fasern für die Herstellung von Faserplatten der eingangs beschriebenen Art sind aus der DE 102 47 412 A1 , der DE 102 47 412 A1 , der DE 102 47 413 A1 sowie der DE 10 2004 001 527 A1 bekannt. Die Fasern werden pneumatisch zugeführt, nach Austritt aus dem Faseraustrittsrohr beleimt, so dass sie dann in den Fallschacht eintreten und auf das luftdurchlässige Transportband fallen bzw. auf dieses gesaugt werden. Die Faserzuführung erfolgt dabei üblicherweise über einen Faserverteilkopf, welcher für eine Faserumlenkung um einen Umlenkwinkel von etwa 90° bis in etwa 180° sorgt, wobei die Faserzuführungsleitung ggf. unter Erweiterung des Querschnittes in das Faseraustrittsrohr übergehen kann. Die bekannten Maßnahmen haben sich grundsätzlich bewährt, sie sind jedoch weiterentwicklungsfähig.Systems for gluing fibers for the production of fiberboard of the type described above are known from DE 102 47 412 A1 , of the DE 102 47 412 A1 , of the DE 102 47 413 A1 as well as the DE 10 2004 001 527 A1 known. The fibers are fed pneumatically, glued after emerging from the fiber outlet tube, so that they then enter the chute and fall onto the air-permeable conveyor belt or are sucked onto this. The fiber supply is usually carried out via a fiber distribution head, which provides for a fiber deflection by a deflection angle of about 90 ° to about 180 °, wherein the fiber supply line may optionally pass under extension of the cross section in the fiber outlet tube. The known measures have basically proven, but they are capable of further development.

Der Erfindung liegt die Aufgabe zugrunde, eine Anlage der eingangs beschriebenen Ausführungsform zu schaffen, mit der sich Fasern für die Herstellung von Faserplatten, insbesondere MDF-Platten, einwandfrei in rationeller und wirtschaftlicher Weise beleimen lassen. Insbesondere soll bei geringem apparativen und konstruktiven Aufwand eine homogene Beleimung des gesamten Faserstroms erreicht werden.The invention has for its object to provide a system of the embodiment described above, with which fibers for the production of fiberboard, especially MDF boards, can glue properly in a rational and economical manner. In particular, a homogeneous gluing of the entire fiber flow should be achieved with low equipment and design effort.

Zur Lösung dieser Aufgabe lehrt die Erfindung bei einer gattungsgemäßen Anlage, dass die Faserumlenkleitung zumindest bereichsweise bzw. abschnittsweise mittels einer oder mehrerer in im Wesentlichen axialer Richtung verlaufender Trennwände als geteilte Leitung mit mehreren Teilleitungen ausgebildet ist. Ergänzend kann die Faserzuführleitung bereichsweise, z. B. in einem sich an die Faserumlenkleitung anschließenden Bereich mittels einer oder mehrerer in im Wesentlichen axialer Richtung verlaufenden Trennwänden als geteilte Leitungen mit mehreren Teilleitungen ausgebildet sein. Alternativ oder ergänzend besteht auch die Möglichkeit, dass das Faseraustrittsrohr, welches sich an die Faserumlenkleitung anschließt, bereichsweise, z. B. in einem sich an die Faserumlenkleitung anschließenden Bereich mittels einer oder mehrerer in axialer Richtung verlaufender Trennwände als geteilte Leitungen mit mehreren Teilleitungen ausgebildet ist. Faserzuführungsleitung, Faserumlenkleitung und/oder Faseraustrittsrohr können dabei kreisförmigen, ovalen, elliptischen oder auch rechteckigen bzw. quadratischen Querschnitt haben. Es sind auch Kombinationen möglich. So kann es aus fertigungstechnischen Gründen zweckmäßig sein, die Faserzuführungsleitung und die Faserumlenkleitung mit einem rechteckigen bzw. quadratischen Querschnitt auszuführen, während das Faseraustrittsrohr vorzugsweise zumindest bereichsweise einen runden Querschnitt aufweisen kann.To solve this problem, the invention teaches in a generic system that the Faserumlenkleitung is formed at least partially or in sections by means of one or more substantially axially extending partitions as a split line with multiple sub-lines. In addition, the Faserzuführleitung region, z. B. be formed in a subsequent to the Faserumlenkleitung area by means of one or more extending in a substantially axial direction partitions as a split lines with multiple sub-lines. Alternatively or additionally, there is also the possibility that the fiber outlet tube, which adjoins the Faserumlenkleitung, partially, z. In a subsequent to the Faserumlenkleitung area is formed by means of one or more axially extending partitions as a split lines with multiple sub-lines. Fiber feed line, Faserumlenkleitung and / or fiber outlet tube can thereby have circular, oval, elliptical or rectangular or square cross-section. There are also combinations possible. So it may be expedient for manufacturing reasons, to perform the fiber feed line and the Faserumlenkleitung with a rectangular or square cross section, while the fiber outlet tube may preferably at least partially have a round cross-section.

Dabei geht die Erfindung von der Erkenntnis aus, dass bei herkömmlichen Faserzuführungs- bzw. Umlenkleitungen, welche als einfache Rohre mit rechteckigem oder kreisförmigen Querschnitt ausgebildet sind, die Gefahr einer "Entmischung" der Fasern besteht. Insbesondere im Bereich der Faserumlenkung kann es vorkommen, dass - insbesondere bei großen Rohrdurchmessern - die Fasern sich bei Austritt aus der Faserumlenkleitung in einem Bereich des Rohrquerschnittes konzentrieren. Durch die erfindungsgemäße Aufteilung der Faserumlenkleitung und/oder der Faserzuführungsleitung und/oder dem Faseraustrittsrohr wird einer solchen Entmischung wirkungsvoll entgegengewirkt. Denn der Faserstrom wird durch die einzelnen Teilleitungen in mehrere Teilströme aufgeteilt, so dass eine Entmischung allenfalls noch innerhalb der einzelnen Teilströme auftreten kann, wobei diese einen deutlich geringeren Querschnitt aufweisen als der gesamte Rohrquerschnitt. In diesem Zusammenhang ist es zweckmäßig, wenn die Faserumlenkleitung und/oder die Faserzuführungsleitung und/oder das Faserzuführungsrohr zumindest bereichsweise mittels Trennwänden in zwei bis zehn, z. B. drei bis acht Teilleitungen aufgeteilt sind. Bevorzugt werden vier bis sechs Teilleitungen eingesetzt. Die Einzelquerschnitte der Teilleitungen können unterschiedlichen Querschnitt, z. B. ebenfalls rechteckigen Querschnitt aufweisen. Insbesondere bei der Verwendung von Leitungen mit rundem Querschnitt können jedoch auch komplexere Querschnittsformen der Einzelleitungen auftreten. Die Faserumlenkleitung weist dabei als teilkreisförmige Umlenkung mit vorgegebenem Bodendurchmesser einen Umlenkwinkel von in etwa 90° bis in etwa 180° auf. Ein besonders kompakter Aufbau wird bei einem Umlenkwinkel von 180° ermöglicht, d. h. die Fasern werden über eine im Wesentlichen senkrecht angeordnete Faserzuführungsleitung von unten nach oben zugeführt, dann über die Faserumlenkleitung um einen Winkel von 180° umgelenkt und schließlich über das ebenfalls im Wesentlichen senkrecht angeordnete Faseraustrittsrohr in den Bereich der Beleimungsvorrichtung eingeführt, von wo aus sie dann in den ebenfalls im Wesentlichen senkrecht angeordneten Fallschacht eintreten.The invention is based on the recognition that in conventional Faserzuführungs- or deflection lines, which are designed as simple tubes with a rectangular or circular cross-section, there is a risk of "segregation" of the fibers. Particularly in the area of fiber deflection, it may happen that - especially with large pipe diameters - the fibers concentrate in an area of the pipe cross-section when emerging from the fiber deflection pipe. The division according to the invention of the fiber deflection line and / or the fiber supply line and / or the fiber outlet tube effectively counteracts such segregation. Because the fiber stream is divided by the individual sub-lines into several streams, so that segregation may possibly still occur within the individual streams, which have a much smaller cross-section than the entire pipe cross-section. In this context, it is expedient if the Faserumlenkleitung and / or the fiber supply line and / or the fiber supply tube at least partially by means of partitions in two to ten, z. B. are divided into three to eight sub-lines. Preferably, four to six sub-lines are used. The individual cross sections of the sub-lines may have different cross-section, z. B. also have rectangular cross-section. Especially when using cables with a round cross-section However, more complex cross-sectional shapes of the individual lines may occur. The Faserumlenkleitung has here as a part-circular deflection with a predetermined bottom diameter a deflection angle of about 90 ° to about 180 °. A particularly compact design is made possible at a deflection angle of 180 °, ie the fibers are fed from bottom to top via a substantially vertically arranged fiber feed line, then deflected by the fiber deflection line through an angle of 180 ° and finally via the also substantially vertically arranged Fiber exit tube introduced into the region of the gluing device, from where they then enter into the also substantially vertically arranged chute.

In bevorzugter Weiterbildung schlägt die Erfindung vor, dass der Bogendurchmesser der Faserumlenkleitung in etwa das 3-fache bis 10-fache, vorzugsweise das 5-fache bis 10-fache des Leitungsdurchmessers beträgt. Die Erfindung schlägt folglich vor, dass die Fasern von der Faserzuführungsleitung über die Faserumlenkleitung in das Faseraustrittsrohr über einen lang gezogenen Bogen überführt werden, der in ein gerades senkrechtes Rohr, nämlich das Faseraustrittsrohr mündet. Ein solcher verhältnismäßig großer Bogendurchmesser wirkt Entmischungen der Fasern weiter entgegen, so dass auch dadurch ein homogener Faserstrom innerhalb des Faseraustrittsrohrs erzeugt wird, welcher dann in die Beleimungszone eintritt.In a preferred embodiment, the invention proposes that the arc diameter of the fiber deflection line is approximately 3 times to 10 times, preferably 5 times to 10 times, the diameter of the line. The invention therefore proposes that the fibers are transferred from the fiber supply line via the Faserumlenkleitung in the fiber outlet tube over an elongated arc, which opens into a straight vertical tube, namely the fiber outlet tube. Such a relatively large arc diameter counteracts further separation of the fibers, so that also by a homogeneous fiber flow is generated within the fiber outlet tube, which then enters the Beleimungszone.

Ferner schlägt die Erfindung in vorteilhafter Weiterbildung vor, dass das im Wesentlichen senkrecht angeordnete und im Wesentlichen gerade Faseraustrittsrohr unter Bildung einer Beruhigungsstrecke eine Länge aufweist, die in etwa das 2-fache bis 20-fache, z. B. das 5-fache bis 15-fache, vorzugsweise das 10-fache bis 15-fache des Rohrdurchmessers des Faseraustrittsrohrs beträgt. Eine derart lange Beruhigungsstrecke bzw. ein derart langes Faseraustrittsrohr ermöglicht es, dass eventuell auftretende Entmischungen im Bereich der Faserumlenkung aufgehoben werden, so dass dann aus dem Faseraustrittsrohr ein äußerst homogener Faserstrahl in die Beleimungszone eintritt.Furthermore, the invention proposes in an advantageous embodiment, that the substantially vertically arranged and substantially straight fiber outlet tube to form a calming section has a length which is approximately 2-fold to 20-fold, z. B. is 5 times to 15 times, preferably 10 times to 15 times the tube diameter of the fiber outlet tube. Such a long calming section or such a long fiber outlet pipe makes it possible for any segregation occurring in the area of the fiber deflection to be eliminated, so that then out of the Fiber exit tube an extremely homogeneous fiber jet enters the gluing zone.

Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen

Fig.
1 eine Anlage zum Beleimen von Fasern in einer vereinfachten schematischen Darstellung,
Fig. 2
einen vergrößerten Ausschnitt aus dem Gegenstand nach Fig. 1 im Bereich der Faserumlenkung,
Fig. 3
einen vergrößerten Ausschnitt aus dem Gegenstand nach Fig. 1 im Bereich der Faserbeleimung und
Fig. 4
einen Querschnitt durch die Faserumlenkleitung.
In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. Show it
FIG.
1 shows a system for gluing fibers in a simplified schematic representation,
Fig. 2
an enlarged section of the object after Fig. 1 in the field of fiber deflection,
Fig. 3
an enlarged section of the object after Fig. 1 in the field of fiber sizing and
Fig. 4
a cross section through the Faserumlenkleitung.

In den Figuren ist eine Anlage zum Beleimen von Fasern 1 für die Herstellung von Faserplatten, insbesondere MDF-Platten dargestellt. Die Anlage ist für einen kontinuierlichen Betrieb eingerichtet und weist eine Faserzuführeinrichtung 2 mit einer mit Förderluft F für den Fasertransport beaufschlagbaren Faserzuführungsleitung 3 auf, welche über eine bogenförmige Faserumlenkleitung 4 in ein Faseraustrittsrohr 5 mündet. Diesem im Wesentlichen senkrecht und gerade ausgebildeten Faseraustrittsrohr 5 ist ein Fallschacht 6 nachgeordnet. Zwischen dem Faseraustrittsrohr 5 und dem Fallschacht 6 ist in einer Beleimungszone eine Beleimungsvorrichtung 7 mit einer Vielzahl von Sprühdüsen 8 zum Besprühen der aus dem Faseraustrittsrohr 5 austretenden und in den Fallschacht 6 eintretenden Fasern 1 mit Leimtropfen angeordnet. Dem Fallschacht 6 ist eine Auffangvorrichtung 9 zum Auffangen und Abführen der beleimten Fasern nachgeordnet. Diese Auffangvorrichtung 9 weist ein luftdurchlässiges Transportband 10 zum Auffangen und Abführen der Fasern sowie eine unterhalb des Transportbandes angeordnete Saugvorrichtung 11 zum Absaugen von Luft aus dem Fallschacht 6 durch das Transportband 10 hindurch auf. Dieses Transportband 10 ist als Siebband oder Filterband ausgebildet. Folglich gelangen die aus dem Faseraustrittsrohr 5 austretenden und anschließend beleimten Fasern über den Fallschacht 6 auf das Transportband 10. Auf diesem Transportband 10 kommen die beleimten Fasern zur Ruhe. Ggf. im Fallschacht 6 absinkender ungenutzter Leim gelangt auf die auf dem Transportband 10 angeordneten Fasern, so dass eine vollständige Leimausnutzung gewährleistet ist und Verschmutzungen der Anlage durch ungenutzten Leim zuverlässig vermieden werden. Für eine homogene Beleimung sorgt die Beleimungsvorrichtung 7, in welcher eine Vielzahl von Sprühdüsen 8 auf einem den Faserstrom umgebenden Düsenkranz angeordnet sind bzw. einen solchen Düsenkranz bilden. Der Fallschacht 6 weist einen sich nach unten aufweitenden Querschnitt auf. Ferner ist in der Figur angedeutet, dass z. B. unterhalb der Beleimungsvorrichtung 7, und folglich am oberen Ende des Fallschachtes 6 eine Mantelluftzuführeinrichtung 12 mit einer oder mehreren Mantelluftleitungen 13 zur Erzeugung eines den Faserstrom im Fallschacht 6 umgebenden Mantelluftstroms M vorgesehen ist. Über die Saugvorrichtung 11 wird folglich sowohl die Förderluft F als auch die Mantelluft M sowie ggf. in die Anlage eintretende bzw. der Anlage zugeführte Umgebungsluft U abgesaugt.In the figures, a plant for gluing fibers 1 for the production of fiberboard, in particular MDF boards is shown. The system is set up for continuous operation and has a fiber feed device 2 with a fiber feed line 3 which can be charged with conveying air F for the fiber transport and which opens into a fiber outlet tube 5 via an arcuate fiber deflection line 4. This downstream substantially straight and trained fiber outlet pipe 5 is a chute 6 arranged downstream. Between the fiber outlet tube 5 and the chute 6, a gluing device 7 with a plurality of spray nozzles 8 for spraying the emerging from the fiber outlet tube 5 and entering the chute 6 fibers 1 is arranged with glue drops in a Beleimungszone. The chute 6 is arranged downstream of a collecting device 9 for collecting and discharging the glued fibers. This collecting device 9 has an air-permeable conveyor belt 10 for collecting and discharging the fibers and a suction device 11 arranged below the conveyor belt for sucking air out of the chute 6 through the conveyor belt 10. This conveyor belt 10 is designed as a sieve belt or filter belt. Consequently, the emerging from the fiber outlet tube 5 and then glued fibers pass through the chute 6 on the conveyor belt 10. On this conveyor belt 10, the glued fibers come to rest. Possibly. in the chute 6 sinking unused glue reaches the arranged on the conveyor belt 10 fibers, so that a complete Leimausnutzung is ensured and contamination of the system can be reliably avoided by unused glue. The gluing device 7, in which a multiplicity of spray nozzles 8 are arranged on a nozzle ring surrounding the fiber stream, or form such a nozzle ring, ensures homogeneous gluing. The chute 6 has a downwardly widening cross section. Furthermore, it is indicated in the figure that z. B. below the gluing device 7, and consequently at the upper end of the chute 6 a jacket air supply 12 is provided with one or more sheath air ducts 13 for generating a surrounding the fiber flow in the chute 6 sheath air flow M. Consequently, both the conveying air F and the jacket air M as well as any ambient air U entering or entering the system are extracted via the suction device 11.

Erfindungsgemäß ist nun vorgesehen, dass die Faserumlenkleitung 4 (z. B. über ihre gesamte Länge) mittels einer oder mehrerer im Wesentlichen in axialer Richtung verlaufender Trennwände 14 als geteilte Leitung mit mehreren Teilleitungen 15 ausgebildet ist. Dieses ist in Fig. 4 angedeutet. Faserumlenkleitung 4 meint dabei gemäß Fig. 2 die bogenförmige Leitung zwischen einerseits der senkrecht und gerade ausgebildeten Faserzuführungsleitung 3 und andererseits dem senkrecht und gerade ausgebildeten Faseraustrittsrohr 5. Ergänzend besteht die Möglichkeit, dass Abschnitte der Faserzuführungsleitung 3 und/oder des Faseraustrittsrohrs 5 ebenfalls solche Trennwände aufweisen und folglich ebenfalls als geteilte Leitung und mehreren Teilleitungen ausgebildet sind, wobei die Aufteilung vorzugsweise der Aufteilung der Faserumlenkleitung entspricht. Dieses ist in den Figuren nicht dargestellt. Im Ausführungsbeispiel sind sowohl die Faserzuführungsleitung 3 als auch die Faserumlenkleitung 4 mit rechteckigem oder quadratischen Querschnitt ausgebildet. Das Faseraustrittsrohr 5 weist einen sich unmittelbar an die Faserumlenkleitung 4 anschließenden oberen Abschnitt 5a mit ebenfalls rechteckigem oder quadratischen Querschnitt auf, an den sich dann über ein Übergangsstück 5b ein unterer Abschnitt 5c mit rundem Querschnitt anschließt, so dass im unteren Bereich des Faseraustrittsrohrs 5 ein Faserstrom mit rundem Querschnitt erzeugt wird, welcher dann in die Beleimungszone eintritt. Dabei ist in Fig. 2 angedeutet, dass das Faseraustrittsrohr 5 an seinem Austrittsende eine "düsenartige" Durchmesserreduzierung 5d aufweist.According to the invention, it is now provided that the fiber deflection line 4 (eg over its entire length) is designed as a divided line with a plurality of sub-lines 15 by means of one or more partition walls 14 extending essentially in the axial direction. This is in Fig. 4 indicated. Faserumlenkleitung 4 means according to Fig. 2 the arcuate line between on the one hand the vertical and straight formed fiber supply line 3 and on the other hand, the vertical and straight formed fiber outlet 5. There is also the possibility that sections of the fiber supply line 3 and / or the fiber outlet tube 5 also have such partitions and consequently also formed as a split line and a plurality of sub-lines, wherein the division preferably corresponds to the division of the Faserumlenkleitung. This is not shown in the figures. In the embodiment, both the fiber supply line 3 and the Faserumlenkleitung 4 are formed with a rectangular or square cross-section. The fiber outlet tube 5 has an adjoining directly to the Faserumlenkleitung 4 upper section 5a with also rectangular or square cross-section, then followed by a transition piece 5b, a lower section 5c with a circular cross-section, so that in the lower region of the fiber outlet tube 5, a fiber stream is generated with a round cross-section, which then enters the gluing zone. It is in Fig. 2 indicated that the fiber outlet tube 5 at its outlet end has a "nozzle-like" diameter reduction 5d.

Im Ausführungsbeispiel ist die Faserumlenkleitung 4 in lediglich vier Teilleitungen 15 aufgeteilt, wobei der rechteckige bzw. quadratische Leitungsquerschnitt dann in ebenfalls rechteckige bzw. quadratische Teilleitungsquerschnitte aufgeteilt ist.In the exemplary embodiment, the Faserumlenkleitung 4 is divided into only four sub-lines 15, wherein the rectangular or square line cross-section is then divided into also rectangular or square sub-line cross-sections.

In Fig. 2 ist erkennbar, dass die Faserumlenkleitung als teilkreisförmige Umlenkung mit einem vorgegebenen Bogendurchmesser b ausgebildet ist und einen Umlenkwinkel von etwa 180° aufweist. Die Fasern 1 gelangen folglich aus der senkrechten Faserzuführungsleitung 3 nach einer Umlenkung um einen Umlenkwinkel von 180° über einen Bogen mit einem Bogendurchmesser b in das ebenfalls senkrechte Faseraustrittsrohr 5. Diese Faserumlenkleitung 4 ist als lang gezogener Bogen ausgebildet, d. h . der Bogendurchmesser b der Faserumlenkleitung beträgt in etwa das 5-fache bis 10-fache des Leitungsdurchmessers d.In Fig. 2 It can be seen that the Faserumlenkleitung is designed as a partial circular deflection with a predetermined arc diameter b and a deflection angle of about 180 °. The fibers 1 thus reach from the vertical fiber feed line 3 after a deflection by a deflection angle of 180 ° over an arc with a bow diameter b in the also vertical fiber outlet pipe 5. This Faserumlenkleitung 4 is formed as a long drawn sheet, d. H . the arc diameter b of the Faserumlenkleitung is approximately 5 times to 10 times the diameter of the pipe d.

Ferner ist insbesondere in Fig. 2 erkennbar, dass das im Wesentlichen senkrecht angeordnete und im Wesentlichen gerade Faseraustrittsrohr eine (vollständige) Länge L aufweist, die in etwa das 10-fache bis 15-fache des Rohrdurchmessers D des Faseraustrittsrohrs 5 beträgt. Rohrdurchmesser D meint hier den größten Durchmesser des runden Querschnittsbereiches.Furthermore, in particular in Fig. 2 recognizable that the substantially vertically arranged and substantially straight fiber outlet tube a Has (full) length L, which is approximately 10 times to 15 times the tube diameter D of the fiber outlet tube 5. Pipe diameter D here means the largest diameter of the round cross-sectional area.

Sofern im Rahmen der Erfindung rechteckige oder quadratische Leitungsquerschnitte oder Rohrquerschnitte beschrieben werden, meint Durchmesser dieser Leitungen oder Rohre die Kantenlänge der langen Kante eines solchen Rechtecks.If rectangular or square wire cross sections or pipe cross sections are described in the context of the invention, diameter of these wires or pipes means the edge length of the long edge of such a rectangle.

Die Erfindung ist im Übrigen nicht auf das Beleimen von Fasern für die Herstellung von Faserplatten beschränkt, vielmehr ist die erfindungsgemäße Anlage auch zum Beleimen von Spänen für die Herstellung von Spanplatten oder OSB-Platten unter Berücksichtigung einer entsprechenden Dimensionierung der einzelnen Aggregate geeignet.The invention is not limited to the gluing of fibers for the production of fiberboard, moreover, the plant according to the invention is also suitable for gluing chips for the production of chipboard or OSB boards, taking into account a corresponding dimensioning of the individual units.

Claims (8)

  1. A installation for the gluing of fibres (1) for the production of fibreboards,
    with a fibre feed device (2) with at least one fibre feed line (3) which can be loaded with conveying air (F) for fibre transport and opens via an arc-shaped fibre diverting line (4) into a fibre outlet pipe (5),
    with a drop shaft (6) arranged downstream of the fibre outlet pipe (5), with a gluing device (7) with spray nozzles (8) for spraying the fibres exiting from the fibre outlet pipe (5) and entering into the drop shaft (6) with glue drops and
    with a catching device (9) for catching the fibres arranged downstream of the drop shaft (6), characterised
    in that the fibre diverting line (4) is constructed by means of one or a plurality of separating walls (14) running in the axial direction as a divided line with a plurality of part lines (15) at least in certain areas.
  2. The installation according to Claim 1, characterised in that in a region adjacent to the fibre diverting line (4), the fibre feed line (3) is constructed by means of one or a plurality of separating walls running in the axial direction as a divided line with a plurality of part lines.
  3. The installation according to Claim 1 or 2, characterised in that in a region adjacent to the fibre diverting line (4), the fibre outlet pipe (5) is constructed by means of one or a plurality of separating walls running in the axial direction as a divided line with a plurality of part lines.
  4. The installation according to any one of Claims 1 to 3, characterised in that the fibre diverting line (4) and/or the fibre feed line (3) and/or the fibre outlet pipe (5) are divided into two to ten part lines (15) by means of the separating walls (14).
  5. The installation according to any one of Claims 1 to 4, characterised in that the fibre diverting line (4) is constructed as a partly circular diversion with an arc diameter (b) and has a diversion angle of 90° to 180°.
  6. The installation according to Claim 5, characterised in that the arc diameter (b) of the fibre diverting line (4) is 3-times to 10-times the line diameter (d).
  7. The installation according to any one of Claims 1 to 6, characterised in that the perpendicularly arranged and straight fibre outlet pipe (5) has a length (L) with the formation of a calming section, which is 2-times to 20-times the pipe diameter (D) of the fibre outlet pipe (5).
  8. The installation according to any one of Claims 1 to 7, characterised in that the gluing device (7) is arranged between the fibre outlet pipe (5) and the drop shaft (6).
EP07819379A 2006-12-13 2007-10-27 Installation for applying glue to fibers for the production of fiberboard, especially mdf board or similar wood material board Active EP2117791B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006058626A DE102006058626B3 (en) 2006-12-13 2006-12-13 Fibers coating system for production of e.g. medium density fiberboard plate, has coating device with spray nozzles to spray droplets of glue on fibers, which enter into chute from fiber output pipe
PCT/EP2007/009336 WO2008071258A1 (en) 2006-12-13 2007-10-27 Installation for applying glue to fibers for the production of fiberboard, especially mdf board or similar wood material board

Publications (2)

Publication Number Publication Date
EP2117791A1 EP2117791A1 (en) 2009-11-18
EP2117791B1 true EP2117791B1 (en) 2011-02-23

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US (1) US7987884B2 (en)
EP (1) EP2117791B1 (en)
CN (1) CN101466511B (en)
AT (1) ATE499192T1 (en)
CA (1) CA2670427C (en)
DE (2) DE102006058626B3 (en)
ES (1) ES2360835T3 (en)
WO (1) WO2008071258A1 (en)

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DE102009042362A1 (en) 2009-09-23 2011-04-21 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Process for the production of cardboard boards or cardboard board strands from waste paper
DE102009042361B4 (en) 2009-09-23 2012-12-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Process for the production of cardboard-like fiberboard from wood fibers
ITMO20110103A1 (en) * 2011-05-06 2012-11-07 Imal Srl DEVICE AND METHOD FOR THE INJECTION OF A FLUID WITHIN A FLOW OF UNCONTROL MATERIAL.
TWI442980B (en) * 2011-10-07 2014-07-01 Long Chen Paper Co Ltd Method and system for applying glue to paper width
CN105171882A (en) * 2015-08-19 2015-12-23 广西三威林产工业有限公司 Fiber discharging and glue sizing device of defibrator
CN112743979B (en) * 2020-12-24 2022-09-30 重庆瑞霆塑胶有限公司 Printing film compounding machine

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Publication number Priority date Publication date Assignee Title
US4322380A (en) * 1979-01-19 1982-03-30 Morrison-Knudsen Forest Products Company, Inc. Method for feeding and orienting fibrous furnish
DE10101380B4 (en) * 2001-01-13 2008-12-24 Dieffenbacher Gmbh + Co. Kg Sifting conveyor line at plants for the production of wood fiber boards
DE10247414B4 (en) * 2002-10-11 2009-04-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Plant for gluing fibers for the production of fiberboard, in particular MDF boards o. The like. Wood-based panels
DE10247413B4 (en) 2002-10-11 2009-05-07 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Plant for gluing fibers for the production of fiberboard, in particular MDF boards or the like wood-based panels
DE10247412C5 (en) 2002-10-11 2010-07-01 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Plant for gluing fibers for the production of fiberboards, in particular MDF boards and the like wood-based panels
DE10356775A1 (en) * 2003-12-02 2005-07-07 Dieffenbacher Gmbh + Co. Kg Method and installation for gluing fibers and a fiber-gluing device
DE102004001527B4 (en) * 2004-01-10 2006-02-16 Büttner Gesellschaft für Trocknungs- und Umwelttechnik mbH Plant and method for gluing fibers for the production of fiberboard, in particular MDF boards u. Like. Wood-based panels

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US7987884B2 (en) 2011-08-02
CN101466511A (en) 2009-06-24
DE502007006568D1 (en) 2011-04-07
CA2670427C (en) 2014-11-25
US20100108270A1 (en) 2010-05-06
CA2670427A1 (en) 2008-06-19
WO2008071258A1 (en) 2008-06-19
DE102006058626B3 (en) 2008-04-10
EP2117791A1 (en) 2009-11-18
ES2360835T3 (en) 2011-06-09
ATE499192T1 (en) 2011-03-15
CN101466511B (en) 2010-12-08

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