EP1153718B1 - Dispositif pour distribution des matériaux granulaires sur un support en mouvement continu - Google Patents

Dispositif pour distribution des matériaux granulaires sur un support en mouvement continu Download PDF

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Publication number
EP1153718B1
EP1153718B1 EP20010109736 EP01109736A EP1153718B1 EP 1153718 B1 EP1153718 B1 EP 1153718B1 EP 20010109736 EP20010109736 EP 20010109736 EP 01109736 A EP01109736 A EP 01109736A EP 1153718 B1 EP1153718 B1 EP 1153718B1
Authority
EP
European Patent Office
Prior art keywords
rollers
elements
scattering
spring elements
take
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20010109736
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German (de)
English (en)
Other versions
EP1153718A1 (fr
Inventor
Matthias Graf
Walter Henschel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dieffenbacher GmbH and Co KG
Original Assignee
Dieffenbacher GmbH and Co KG
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Filing date
Publication date
Application filed by Dieffenbacher GmbH and Co KG filed Critical Dieffenbacher GmbH and Co KG
Publication of EP1153718A1 publication Critical patent/EP1153718A1/fr
Application granted granted Critical
Publication of EP1153718B1 publication Critical patent/EP1153718B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres

Definitions

  • the invention relates to a device for spreading spreading material on a continuously moving base according to the preamble of patent claim 1.
  • Such a device is from the US 3,252,186 known.
  • rotating disk rollers or spiked rollers which have rows arranged on the circumference spike, which engage between the spiked rows of the opposite roller.
  • Fiber bale opening rollers are known, which are driven in opposite directions rotating.
  • the rollers are designed as disc shafts with attached toothed disks. These toothed disks have so-called Auflösezähne, which are set counter to the direction of rotation sawtooth-like, wherein the opening teeth of the rollers mesh and form a meandering gap.
  • a resolution of Streugutverdichtitch can be achieved. If, however, other foreign bodies such as stones together with the material flow in the opening rollers, it can cause damage to the rollers. This can lead to deformation or the breaking of individual spines or teeth of the rollers. In addition, the foreign bodies are not effectively retained. Between the individual teeth of a disc roller or between the individual spines of a spiked row remain clearances that allow the unhindered passage of smaller foreign bodies.
  • a device for spreading matte grit on a moving surface in which an arrangement of disk rolls is provided. These disk rollers are all driven in the same direction rotating and form scattering chambers for grit of different grain size. In addition to the classification of the components of the grit, foreign bodies such as glue lumps, splinters and so forth are discharged behind the disk roller and collected in a gutter.
  • a cover layer spreading device which has a sieve device below a blow register, which comprises a vibration drive.
  • a sieve device below a blow register, which comprises a vibration drive.
  • Object of the present invention is therefore to develop a device for spreading of grit in such a way that a high quality wood-based material board can be produced and damage to device parts of the production plant for the production of wood-based panels are avoided.
  • a stream of material enters the rolls with a foreign body such as a stone, for example, and strikes a spring-elastic element at a high differential speed, then the spring-elastic element is elastically deformed. As a result, the momentum forces are reduced by a multiple.
  • the foreign matter is conveyed through the gap between the resilient members due to the counter rotation of the rollers, and the foreign matter is accelerated to the same speed.
  • the foreign body which is larger than the gap of the passage between the elements, the foreign body can be accommodated due to the resiliently formed elements between the elements, so that there is no damage to the rollers or the elements.
  • the rollers are arranged such that a Having by the central axes of the rollers extending plane to a horizontal plane at an angle of 30 ° to 90 °, preferably 45 ° to 75 °.
  • the particles of the stream are pulsed during the passage between the rollers and charged depending on their specific weights with different kinetic energy. Depending on the kinetic energy of the particles of the material flow, the particles of the material flow move in a different pitch parabola from the opening roller assembly, so that unwanted foreign bodies can be separated from the rest of the material flow.
  • FIG. 1 schematically is a forming station with at least one dosing bunker 1, which has a Austragswalzenan kann 2, an opening roller assembly 3, a scattering head assembly 4 and a forming belt 5 shown.
  • the opening roller assembly 3 consists of two below the Austragswalzenan für 2 superimposed rollers 6,6 'wherein the rollers 6, 6' are arranged axially parallel and wherein a through the central axes of the rollers 6, 6 'extending plane 7 to a horizontal plane 8 an angle ⁇ 9 from 30 to 90 °, preferably from 45 ° to 75 °.
  • the forming station is preferably different for the production of sheets of lignocellulosic and / or cellulose-containing particles Size such as fibers, chips and the like provided.
  • the flow of material emanating from the Austragswalanzanorndung 2 trickles down by gravity and meets at low speed on the rollers 6, 6 '.
  • These rotate at a very high speed of 600 to 3000 revolutions per minute, preferably 800 to 1200 revolutions per minute and thus accelerate the impinging particles of the material flow on the peripheral speed.
  • the pulp particles are thus catapulted out of the opening roller assembly 3 at this speed.
  • an air stream is also drawn through the opening roller assembly 3. This air stream expands immediately behind the opening roller assembly 3, causing a rapid deceleration of the air speed.
  • the light wood particles are delayed by their low kinetic energy along with the air flow.
  • the material flow moves in a parcel of parchment from the opening roller assembly 3.
  • the unwanted foreign bodies leaving the opening roller assembly 3 at high speed in a flat parabola are collected in a separate shaft 11, and thus of the remaining fiber stream separated.
  • the fiber stream impinges on the scattering head arrangement 4 arranged below the opening roller arrangement 3 and is subsequently scattered onto the forming belt 5 to form a fiber fleece.
  • the bent spring elements 15 have in their end regions 17 substantially parallel sections.
  • the spring elements 15 are on the rollers 6, 6 'arranged such that the spring elements 15 in opposite directions rotation of the rollers 6, 6' (represented by arrow 18) radially align due to the centrifugal forces acting and the spring elements 15 of the rollers 6, 6 ' interacting with each other so that an aggregated fiber stream passing through the nip between the rollers 6, 6 'is dissolved. Meets a foreign body on the rollers 6, 6 'so the spring elements can dodge 15 and are not damaged.
  • the spring elements 15 may also be formed as Druckgußieri or flat steel elements.
  • the elements for dissolving as on the rollers 6, 6 'distributed over the circumference arranged conically extending spiral spring elements 19 are formed.
  • the spiral spring elements 19 are arranged on the rollers 6, 6 'in such a way that, when the rollers 6, 6' rotate in opposite directions, they respectively project into the interspaces of the opposing roller and thus cooperate with one another in an intermeshing manner, and a dissolving of an aggregated fiber stream is applied to the rollers, and passing through the gap between the rollers is achieved. If a foreign body strikes a spiral spring element 19, then the spiral spring element is elastically deformed, whereby the acting momentum forces are reduced by a multiple. After the foreign body has been accelerated to the same speed, the spiral spring element 19 resumes its original position.
  • the spring elements may have a profiling 21.
  • the profiling 21 may be corrugated or formed, for example, sawtooth.
  • an opening roller 6 a plurality of spikes 23 are provided, which are formed substantially cylindrical, and which are provided on one side with a disk-shaped plate 24. At its end facing away from the plate 24, the spikes 23 may be pointed, rounded or flattened.
  • the individual spines 24 are inserted from the inside through the corresponding perforations of the elastic sheath 22 and are pressed onto the roller 6 due to the bias of the elastic sheath 22.
  • the spikes 23 are arranged radially aligned in parallel planes of the roller 6 distributed over the circumference.
  • twenty-five to thirty-five spines are distributed over the circumference in one plane.
  • the spikes 23 can escape by the disc-shaped plate 24 lift off the roller 6 and the elastic sheath 22 is pulled up.
  • two rollers 6, 6 ' are arranged rotating in opposite directions, with the spikes 23 of the roller 6 engaging in the gaps between the spikes 23 of the roller 6' in order to achieve a dissolution of fiber aggregates.
  • Fig. 6 schematically is a forming station with dosing hopper 1, an opening roller assembly 3, a scattering head assembly 4 and a forming belt 5, on which the material web 25 is sprinkled from glued fibers represented.
  • the material stream of glued fibers is temporarily stored and distributed to an intended discharge width and discharged downwards over the entire width of the dosing hopper 1.
  • the material flow is then applied to the opening roller assembly 3, which consists of two oppositely rotating driven rollers 6, 6 '.
  • an additional conveying device 26 which supplies the material flow of a spreading head assembly 4.
  • the additional conveying device 26 is designed as a feeder belt, which continuously promotes a controllable flow in the spreading head assembly 4, so that depending on the plate thickness and width of the scattering head assembly a predetermined amount is strewn to the forming belt 5.
  • the conveying direction of the forming belt 5 is shown here by the arrow 27.
  • the fiber opening roller arrangement 3 could also be arranged between the conveying device 26 and the spreading head arrangement 4.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (5)

  1. Dispositif de distribution de matières granulaires sur un support déplacé en continu au cours de la fabrication de panneaux en matériaux dérivés du bois, comportant au moins deux cylindres, disposés de manière à tourner en sens inverse et comportant des éléments destinés à désagréger des amas solidifiés contenus dans le flux de matière, les éléments de cylindres adjacents coopérant par prise les uns avec les autres, caractérisé en ce que les éléments (15, 19, 20, 23) sont réalisés sous forme d'éléments élastiques flexibles et en ce que les éléments sous forme d'éléments à ressort (15) courbés sont montés de manière articulée contre les cylindres (6, 6') ou les éléments sont réalisés sous forme d'éléments à ressort en spirale (17) répartis sur les cylindres (6, 6') ou les éléments sont réalisés sous forme d'éléments à ressort (20) dans des rondelles flexibles en tôle ou les éléments sont réalisés sous forme de picots (23) individuels avec des rondelles (24) en forme de disques, qui sont maintenues en position sur les cylindres (6, 6') par un manchon (22) élastique perforé, et les éléments (15, 17, 20, 23) sont disposés sur les cylindres (6, 6') en étant orientés selon la force centrifuge, les particules de flux de matière étant sollicitées par impulsions pendant leur passage entre les cylindres (6, 6') et étant accélérées en fonction de leur poids spécifique.
  2. Dispositif de distribution de matières granulaires selon la revendication 1, dans lequel les éléments à ressort (15) sont réalisés sous forme d'éléments moulés sous pression ou d'éléments en acier plat.
  3. Dispositif de distribution de matières granulaires selon la revendication 1 ou 2, dans lequel les éléments à ressort (20) sont munis d'un profilage (21).
  4. Dispositif de distribution de matières granulaires selon la revendication 1, dans lequel les cylindres (6, 6') sont disposés de telle sorte qu'un plan (7), passant par les axes médians des cylindres (6, 6'), délimite avec un plan horizontal (8) un angle α (9) de 30 à 90°, de préférence de 45° à 75°.
  5. Dispositif de distribution de matières granulaires selon la revendication 4, dans lequel il est prévu en plus une cuve (11) destinée à recevoir les corps étrangers ayant un poids spécifique élevé.
EP20010109736 2000-04-28 2001-04-20 Dispositif pour distribution des matériaux granulaires sur un support en mouvement continu Expired - Lifetime EP1153718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000120881 DE10020881A1 (de) 2000-04-28 2000-04-28 Vorrichtung zum Streuen von Streugut auf eine kontinuierlich bewegte Unterlage
DE10020881 2000-04-28

Publications (2)

Publication Number Publication Date
EP1153718A1 EP1153718A1 (fr) 2001-11-14
EP1153718B1 true EP1153718B1 (fr) 2008-06-11

Family

ID=7640233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010109736 Expired - Lifetime EP1153718B1 (fr) 2000-04-28 2001-04-20 Dispositif pour distribution des matériaux granulaires sur un support en mouvement continu

Country Status (2)

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EP (1) EP1153718B1 (fr)
DE (2) DE10020881A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10053129A1 (de) * 2000-10-26 2002-05-08 Dieffenbacher Schenck Panel Vorrichtung zum Streuen von Streugut auf eine kontinuierlich bewegte Unterlage
DE10304147A1 (de) * 2003-02-03 2004-08-05 Dieffenbacher Gmbh + Co. Kg Vorrichtung zum Streuen von Streugut auf eine kontinuierlich bewegte Unterlage sowie Bunker für die Vorrichtung zum Streuen von Streugut
DE10356775A1 (de) * 2003-12-02 2005-07-07 Dieffenbacher Gmbh + Co. Kg Verfahren und Anlage zur Beleimung von Fasern und eine Faserbeleimungsvorrichtung
DE102006002880A1 (de) * 2006-01-20 2007-07-26 Dieffenbacher Gmbh + Co. Kg Verfahren und Formstation zur Bildung einer Streugutmatte im Zuge der Herstellung von Holzwerkstoffplatten
DE102006062396A1 (de) * 2006-12-25 2008-06-26 Dieffenbacher Gmbh + Co. Kg Verfahren und Formstation zur Bildung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
ITMO20100314A1 (it) * 2010-11-05 2012-05-06 Imal Srl Dispositivo per fluidificare e/o accelerare un flusso di materiali incoerenti in forma di fibre, scaglie o trucioli.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1174058B (de) * 1959-09-09 1964-07-16 Abitibi Power & Paper Company Geraet zur Herstellung einer gerichtete Holz-teilchen unterschiedlicher Abmessungen enthaltenden Spanplatte
US3252186A (en) * 1963-01-21 1966-05-24 Wood Conversion Co Differential fiber dispersing rolls and felting therefrom
IT1065247B (it) * 1975-08-08 1985-02-25 Siempelkamp Gmbh & Co Dispositivo per spargere il materiale componente i pannelli grezzi per la preparazione di pannelli truciolari pannelli di fibre e simili
DE8128311U1 (fr) * 1981-09-26 1986-12-11 Carl Schenck Ag, 6100 Darmstadt, De
DE4212017C2 (de) * 1992-04-09 1999-08-19 Kvaerner Panel Sys Gmbh Deckschichtstreuvorrichtung
DE4345567B4 (de) * 1993-02-02 2005-03-03 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Streumaschine zum Streuen von beleimtem Streugut zu Streugutmatten in einer Anlage zur Herstellung von Holzwerkstoffplatten
DE4439653A1 (de) * 1994-11-07 1996-05-09 Baehre & Greten Vorrichtung zum Streuen von beleimten Spänen, Fasern und dergleichen Teilchen
SE509665C2 (sv) * 1997-02-24 1999-02-22 Flaekt Ab MDF-Formare
IT1290732B1 (it) * 1997-03-12 1998-12-10 Pal Srl Dispositivo a rulli per la separazione di chips e particelle a granulometria differenziata e macchina formatrice utilizzante
DE19846107A1 (de) * 1998-10-07 2000-04-13 Dieffenbacher Schenck Panel Walze zum Streuen und Abbremsen rieselfähiger Materialien

Also Published As

Publication number Publication date
DE50114018D1 (de) 2008-07-24
DE10020881A1 (de) 2001-10-31
EP1153718A1 (fr) 2001-11-14

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