EP1442855B1 - 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
EP1442855B1
EP1442855B1 EP20040001528 EP04001528A EP1442855B1 EP 1442855 B1 EP1442855 B1 EP 1442855B1 EP 20040001528 EP20040001528 EP 20040001528 EP 04001528 A EP04001528 A EP 04001528A EP 1442855 B1 EP1442855 B1 EP 1442855B1
Authority
EP
European Patent Office
Prior art keywords
rollers
spread
materials according
spreading
dissolving
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 - Fee Related
Application number
EP20040001528
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German (de)
English (en)
Other versions
EP1442855A3 (fr
EP1442855A2 (fr
Inventor
Gerhard Melzer
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Dieffenbacher GmbH and Co KG filed Critical Dieffenbacher GmbH and Co KG
Publication of EP1442855A2 publication Critical patent/EP1442855A2/fr
Publication of EP1442855A3 publication Critical patent/EP1442855A3/fr
Application granted granted Critical
Publication of EP1442855B1 publication Critical patent/EP1442855B1/fr
Anticipated expiration legal-status Critical
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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 coated gluten, in particular chip and fibrous goods in the course of the production of wood-based panels according to the preamble of claim 1.
  • opening rollers after the dosing bunker and before the scattering head assembly ie in the flow between dosing bunker and scattering head arrangement arranged; they rotate in opposite directions at very high speeds of 800 - 2000 revolutions per minute.
  • toothed disk rolls or spiked rollers which have rows arranged on the circumference spines, which engage between the spiked rows of the opposite roller.
  • the material flow is in this case driven by the gap formed between the sting.
  • Object of the present invention is to develop a device for spreading glued grit, especially chip and fibrous goods in the course of the production of wood-based panels according to the preamble of claim 1 such that a high quality wood-based panel can be produced, and wherein a high throughput and a small footprint is achieved and continue the manufacturing and construction costs is minimized.
  • rollers of the Austragswalzenanix are formed as provided with release elements opening rollers.
  • the opening rollers which are otherwise additionally arranged between the dosing bunker and the spreading head arrangement, can be dispensed with.
  • the fast-rotating opening rollers fulfill both the function of uniform discharge and the resolution. Due to this training height and other manufacturing costs for additional rollers is saved.
  • all opening rollers have the same direction of rotation, with the exception of the uppermost opening roller.
  • a good resolution of the fiber / glue nodes is achieved.
  • the invention provides, in a further development, the arrangement of wall elements which subdivide the delivery flow into a plurality of partial streams.
  • the Wall elements are spaced from each other vertically and longitudinally to the conveying direction.
  • the wall elements are designed to be adjustable in one embodiment. As a result, shafts that form through the wall elements can be adjusted individually opening or closing downwards. Furthermore, this also an adjustability for the purpose of changing the spread is conceivable.
  • FIG. 1 The drawing shows schematically a scattering station 1 with a dosing bunker 2, a calming fan 3, a scattering roller assembly 4 and a forming belt 5, to which the material web 6 is sprinkled from free-flowing material spread, shown.
  • free-flowing materials are lignocellulosic and / or cellulose-containing particles of different sizes such as fibers, chips and the like provided in the first place.
  • lignocellulosic and / or cellulose-containing particles of different sizes such as fibers, chips and the like provided in the first place.
  • fiberboard wood fibers are usually used provided with binders.
  • glued wood fibers are introduced via a screw conveyor, not shown, in the entry area 7 of the dosing bunker 2.
  • the screw conveyor distributes the fibers over the entire bunker width.
  • a bottom band 8 is provided, to which the wood fibers are applied and which slowly conveys the entire applied fiber layer to a discharge area 10.
  • a back combing device 9 in the form of a back pressure rake 9 is provided at the top of the dosing bunker 2, by means of which a constant filling level is produced.
  • opening rollers are provided over the entire bulk height, which form an opening roller assembly 11. By means of the opening roller assembly 11, the flow of wood fibers is dissolved and added to a directly downstream calming 3.
  • a plurality of individual opening rollers 12 are arranged in parallel spaced apart in the discharge area 10, wherein the opening rollers 12 are arranged starting from the bottom belt 8 in the vertical direction to the backscrap 9 out obliquely.
  • a through the axes of rotation of the opening rollers 12 extending plane E has to a vertical V at an angle ⁇ .
  • Fig. 1 From the illustration too Fig. 1 is further seen that the opening rollers 12 are driven to rotate in the counterclockwise direction (arrows 13), wherein the uppermost, the backscatter rake 9 closest opening roller 12 is driven in opposite directions rotating.
  • the opening rollers can be operated at low speeds of 200-800 rpm in comparison to previous fiber opening rollers.
  • FIG. 2a, 2b Further details of the opening rollers 12 can the drawings to the Fig. 2a, 2b . Fig. 3a, 3b be removed.
  • the opening rollers 12 each have a cylindrical base body 14 formed as a rotary shaft, which are provided with a plurality of arranged on the main body spaced-apart slices 15.
  • each spacer sleeves 16 are inserted between the arranged on the opening rollers 12 adjacent slices 15 .
  • the slices 15 are made of a spring plate.
  • the sheet thickness of the slices 15 is 1.5 mm in this embodiment.
  • the dissolving discs 15 have, as it is known from Fig. 2a it can be seen, an annular portion extending from the evenly distributed over the circumference of the release elements 17 radially outward, between which recesses remain.
  • the dissolving elements 17 are formed substantially rectangular. Furthermore, tapered recesses are provided centrally on their front sides, radially inward, so that two tips 18 are formed at each end of the opening element 17.
  • a meshing state of adjacent opening rollers 12 is shown.
  • Ü a measure of the overlap region of the slices 15 adjacent opening rollers 12 is designated.
  • Fig. 3a, 3b is shown a non-combing state in which the slices 15 have a gap S distance.
  • opening rollers 12 may be provided with other structurally designed release elements or spikes or the like.
  • the flow of glued fibers is forced through the narrow gap formed between the spikes, resulting in fiber disintegration of fiber / glue knots.
  • the dissolved material stream is thrown after the opening roller assembly 11 in a immediately downstream arranged sedation fan 3 (arrows p, Fig. 4 )
  • the reassurance fan 3 consists of a housing part in which a plurality of parallel wall elements 20 are arranged.
  • the wall elements 20 are preferably designed as longitudinally aligned to the conveying direction of the forming belt 5 sheets and divide the housing part into several calming chambers 21 (illustration Fig. 4 ).
  • a number of uniform partial flows are created, which are to be influenced individually in order to achieve an optimal distribution on the forming belt 5.
  • at least as many wall elements 20 are provided that at least three partial flows arise.
  • plate widths of up to about 3 to 4 meters are common in practice, calming fans of about eight to thirty parallel currents have proven to be advantageous.
  • the conveying direction is vertical in order to convey the material particles from the overhead dosing bunker 2 to the scattering roller arrangement 4 arranged therebelow.
  • the calming compartment 3 can also be arranged obliquely to the vertical direction in order to simultaneously achieve a horizontal conveying component.
  • the calming fan can also be oriented obliquely to the conveying direction in order to deflect the flow laterally.
  • the wall elements 20 are formed on their upper, the opening rollers 12 facing region, each semicircular, the contour of the opening rollers 12 corresponding recessed.
  • the wall elements 20 can be arranged immediately following the opening roller assembly 11 and there remains only a small gap between opening rollers 12 and the upper edge of the wall elements 20 of the sedan 3.
  • no fibers can be deposited on the upper edge of the wall elements 20 and a fiber - / Leimknoten Struktur can be prevented.
  • the wall elements 20 protrude from the opening roller assembly 11 in the vertical direction until shortly beyond a task flap 22.
  • the task flap 22 can also for the purpose of adaptation to different plate thicknesses about the axis of rotation D ( Fig. 6 ) are pivoted.
  • the material flow forced through the opening cylinder arrangement 11 is catapulted into the calming chambers 21 of the calming compartment 3 with high kinetic energy.
  • the existing air streams together with the fibers are now passed as parallel partial streams in the calming chambers 21 down.
  • turbulences may occur in the individual calming chambers 21, due to the spatial limitation, however, it is prevented that a significant redistribution of the material flow in the transverse direction can occur.
  • the scattering roller assembly 4 consists of several parallel and transversely to the conveying direction arranged scattering rollers.
  • the spreader rollers are arranged along the conveying direction in a horizontal rising line to ensure a uniform dispersion and a height limit.
  • the spreader rolls are provided directly below the task flap 22 and promote the flowable goods, preferably the glued wood fibers against the conveying direction.
  • an additional conveying device could also be provided following the calming compartments 3, which feeds the stream of glued fibers to a spreading head arrangement 4.
  • the additional conveying device is designed as a feeder belt, which continuously conveys a controllable flow rate in the spreading head assembly 4, so that depending on the plate thickness and width of the scattering head assembly 4 a predetermined amount is strewn on the forming belt 5.
  • Fig. 5 shows a further embodiment of a scattering station for spreading glued litter in the course of the production of wood fiber boards, in which the opening rollers 12 are driven in pairs in opposite directions rotating. As it is from the Fig. 5 it can be seen, in this case four pairs of opening rollers 12 are provided in the discharge region 10 of the metering bunker 2. In this arrangement, the paired opening rollers 12 must be operated at different speeds, so that at the interface, a relative speed between the opening rollers 12 is formed, which leads to a resolution of Faser./Leimknoten.
  • the wall elements 20 are at least partially pivotally or slidably mounted relative to a stationary housing part, so that the distances of the wall elements 20 from each other are continuously or gradually adjustable.
  • the wall elements 20 are designed in two parts and in the lower part walls 23 which can be pivoted about an axis A by means of an adjusting mechanism 24.
  • the distance between the wall elements in the lower region can be varied at the side facing the scattering roller assembly 4 side.
  • Fig. 7a shows a scattering station 1 '''in contrast to the embodiment according to.
  • Fig. 1 In the lower region of the task flap 22 facing baffles 26 are provided.
  • the wall elements 20 On the notedklappe 22 are spaced in the longitudinal direction, the wall elements 20 each assigned guide plates 26 which are slidably guided in the Fckenüngsgabeln 25.
  • Fig. 8 illustrated a variant in which behind the opening roller assembly 11, a large-volume expansion space 27 is formed, wherein additionally via a suction duct 28, an indirect suction of the air takes place.
  • the high momentum created by the high-speed fiber opening rollers 12 can still be used to separate heavy material, such as glue / fiber lumps that are not dissolved or other foreign bodies, from fiber flow.
  • This can, as it is in the Fig. 9 is shown schematically, spaced apart in front of the Austragswalzenan Aunt 11 a shaft 29 are arranged with opening slots 30.
  • the foreign bodies, which are considerably heavier than the fibers of the material flow, are thrown much further due to the high kinetic energy and, as shown by the arrow 31, pass through the opening slots 30 into the heavy material separator formed as a shaft.
  • a screw 32 which conveys the heavy parts trapped in the shaft out of the spreading device.
  • a variant embodiment is also possible in which the formation of a calming fan is dispensed with and the dissolved material flow is applied directly to a spreading head assembly.

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)
  • Preliminary Treatment Of Fibers (AREA)
  • Coating Apparatus (AREA)

Claims (9)

  1. Dispositif destiné à la répartition de matériaux de dispersion encollés, en particulier de matériaux à particules ou fibreux au cours du processus de fabrication de panneaux en matériaux dérivés du bois, comportant une trémie doseuse (2) ayant une zone d'alimentation, une zone de stockage et une zone d'évacuation (10) pour les matériaux de dispersion, cette zone d'évacuation (10) comprenant un dispositif de cylindres d'évacuation (11) composé par un grand nombre de cylindres (12) parallèles et par un aménagement de cylindres de dispersion (4) au moyen duquel le matériau de dispersion est diffusable sur une bande de formage (6) continuellement en mouvement caractérisé en ce que les cylindres (12) du dispositif de cylindres d'évacuation (11) sont des cylindres d'extraction (12) à éléments extracteurs (17)
  2. Dispositif de répartition de matériaux de dispersion encollés selon la revendication 1, caractérisé en ce que les cylindres d'extraction (12) sont disposés par paires en rotation opposée, où les cylindres d'extraction (12) d'une paire sont en rotation à des vitesses différentes.
  3. Dispositif de répartition de matériaux de dispersion encollés selon la revendication 1, caractérisé en ce que tous les cylindres d'extraction (12) à l'exception du cylindre d'extraction supérieur (12) présentent verticalement le même sens de rotation.
  4. Dispositif de répartition de matériaux de dispersion encollés selon les revendications 1 à 3, caractérisé en ce que la disposition de tous les cylindres d'extraction (12) permet le réglage de leur distance d'axe en axe.
  5. Dispositif de répartition de matériaux de dispersion encollés selon les revendications 1 à 4, caractérisé en ce qu' un éventail de stabilisation (3) est disposé à proximité immédiate du dispositif de cylindres d'évacuation (11) étant constitué par plusieurs éléments de parois (20) disposés parallèlement et s'étendant longitudinalement dans le sens du convoyage, et où ces éléments de parois (20) forment un grand nombre d'alvéoles de stabilisation (21).
  6. Dispositif de répartition de matériaux de dispersion encollés selon les revendications 1 à 4, caractérisé en ce que les éléments de parois (20) comprennent des parois partielles séparées (23) dans la zone faisant face à la disposition de la tête de dispersion (4) ces parois partielles (23) étant montées de manière basculable au moyen d'éléments de réglage (24), de sorte que dans la zone inférieure l'évacuation est modifiable dans le sens transversal.
  7. Dispositif de répartition de matériaux de dispersion encollés selon les revendications 3 ou 6, caractérisé en ce que les éléments de parois (20) sont conçus de telle manière qu'ils puissent, au moyen d'un élément de réglage, être déplacés au moins partiellement, transversalement au sens de convoyage de la bande de formage (5).
  8. Dispositif de répartition de matériaux de dispersion encollés selon l'une des revendications précédentes caractérisé en ce qu'une chambre d'expansion comportant une cheminée d'aspiration d'air (28) est prévue dans la zone située en aval du dispositif de cylindres d'évacuation (11).
  9. Dispositif de répartition de matériaux de dispersion encollés selon l'une des revendications précédentes, caractérisé en ce qu'une cheminée (29) de précipitation des particules lourdes avec entrée grillagée (30)est aménagée dans la zone en aval du dispositif de cylindres d'évacuation (11)
EP20040001528 2003-02-03 2004-01-24 Dispositif pour distribution des matériaux granulaires sur un support en mouvement continu Expired - Fee Related EP1442855B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10304147 2003-02-03
DE2003104147 DE10304147A1 (de) 2003-02-03 2003-02-03 Vorrichtung zum Streuen von Streugut auf eine kontinuierlich bewegte Unterlage sowie Bunker für die Vorrichtung zum Streuen von Streugut

Publications (3)

Publication Number Publication Date
EP1442855A2 EP1442855A2 (fr) 2004-08-04
EP1442855A3 EP1442855A3 (fr) 2005-09-14
EP1442855B1 true EP1442855B1 (fr) 2009-03-18

Family

ID=32603104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040001528 Expired - Fee Related EP1442855B1 (fr) 2003-02-03 2004-01-24 Dispositif pour distribution des matériaux granulaires sur un support en mouvement continu

Country Status (3)

Country Link
EP (1) EP1442855B1 (fr)
CN (1) CN1532032B (fr)
DE (2) DE10304147A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102008039466A1 (de) 2008-08-25 2010-03-04 Dieffenbacher Gmbh + Co. Kg Verfahren und Streustation zur Herstellung einer Streugutmatte aus rieselfähigem Streugut im Zuge der Herstellung von Holzwerkstoffplatten
DE102009047125A1 (de) 2009-11-25 2011-05-26 Dieffenbacher Gmbh + Co. Kg Anlage und Verfahren zur Formung einer Streugutmatte aus Streugut auf einem Formband im Zuge der Herstellung von Werkstoffplatten
DE102009047124A1 (de) 2009-11-25 2011-05-26 Dieffenbacher Gmbh + Co. Kg Anlage und Verfahren zur Formung einer Streugutmatte aus Streugut auf einem Formband im Zuge der Herstellung von Werkstoffplatten
DE102010002066A1 (de) * 2010-02-17 2011-08-18 Dieffenbacher GmbH + Co. KG, 75031 Verfahren und eine Anlage zur Herstellung einer Streugutmatte aus zumindest einer gestreuten Schicht im Zuge der Herstellung von Holzwerkstoffplatten in einer Presse
DE102014016867B3 (de) * 2014-11-14 2015-09-17 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung und Verfahren zur Behandlung von streufähigem Gut
EP3966007A4 (fr) * 2019-05-07 2023-02-08 IKEA Supply AG Appareil et procédé pour la fabrication de panneaux à base de bois
CN110091406B (zh) * 2019-05-08 2021-04-27 山东鹤洋木业有限公司 一种高密度刨花板的生产工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252186A (en) * 1963-01-21 1966-05-24 Wood Conversion Co Differential fiber dispersing rolls and felting therefrom
US4494919A (en) * 1982-09-20 1985-01-22 Macmillan Bloedel Limited Apparatus for laying a mat of wood strands
DE4439653A1 (de) * 1994-11-07 1996-05-09 Baehre & Greten Vorrichtung zum Streuen von beleimten Spänen, Fasern und dergleichen Teilchen
CN2243969Y (zh) * 1995-09-14 1997-01-01 南京林业大学 插片加星形器组合式定向刨花铺装头
CN2231606Y (zh) * 1995-09-14 1996-07-24 南京林业大学 圆盘加星形器组合式定向刨花铺装头
FI101869B (fi) * 1997-02-07 1998-09-15 Sunds Defibrator Loviisa Oy Menetelmä ja laitteisto rakennetuoteaihion valmistamiseksi ja rakennet uoteaihio
DE29707143U1 (de) * 1997-04-21 1997-07-03 Kvaerner Panel Sys Gmbh Vorrichtung zum Ausrichten und Ablegen von länglichen Teilchen wie Holzspänen, Holzfasern o.dgl. auf einer kontinuierlich bewegten Unterlage
DE10018218A1 (de) * 1999-04-12 2001-10-25 Dieffenbacher Schenck Panel Formstation
DE10020881A1 (de) * 2000-04-28 2001-10-31 Dieffenbacher Schenck Panel Vorrichtung zum Streuen von Streugut auf eine kontinuierlich bewegte Unterlage
DE10053129A1 (de) * 2000-10-26 2002-05-08 Dieffenbacher Schenck Panel Vorrichtung zum Streuen von Streugut auf eine kontinuierlich bewegte Unterlage

Also Published As

Publication number Publication date
EP1442855A3 (fr) 2005-09-14
EP1442855A2 (fr) 2004-08-04
DE10304147A1 (de) 2004-08-05
CN1532032B (zh) 2010-05-26
DE502004009168D1 (de) 2009-04-30
CN1532032A (zh) 2004-09-29

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