[go: up one dir, main page]

EP0069162A1 - Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée - Google Patents

Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée Download PDF

Info

Publication number
EP0069162A1
EP0069162A1 EP81105215A EP81105215A EP0069162A1 EP 0069162 A1 EP0069162 A1 EP 0069162A1 EP 81105215 A EP81105215 A EP 81105215A EP 81105215 A EP81105215 A EP 81105215A EP 0069162 A1 EP0069162 A1 EP 0069162A1
Authority
EP
European Patent Office
Prior art keywords
width
discharge rollers
chip
bunker
suction
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.)
Granted
Application number
EP81105215A
Other languages
German (de)
English (en)
Other versions
EP0069162B1 (fr
Inventor
Wolfgang Bürkner
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.)
Carl Schenck AG
Original Assignee
Carl Schenck AG
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.)
Filing date
Publication date
Application filed by Carl Schenck AG filed Critical Carl Schenck AG
Priority to DE8181105215T priority Critical patent/DE3170270D1/de
Priority to EP81105215A priority patent/EP0069162B1/fr
Priority to FI820641A priority patent/FI73912C/fi
Priority to US06/392,334 priority patent/US4504182A/en
Publication of EP0069162A1 publication Critical patent/EP0069162A1/fr
Application granted granted Critical
Publication of EP0069162B1 publication Critical patent/EP0069162B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B27N3/146—Controlling mat weight distribution

Definitions

  • the invention relates to a method and a device for influencing the density distribution of a chip fleece to be scattered over its scattering width.
  • the problem of uniform scattering has been known for a long time, for example in DE-PS 2214 900 a spreading device for compensating for different basis weights in the transverse direction of chip or fiber fleeces or the like, for the production of chipboard, fiberboard or the like with one below the spreading device and relative to this movable mold base with a flexible metering conveyor belt arranged above the mold base and sliding along a base, and a stripping roller or the like running around the fleece perpendicular to the conveying direction for chips, fibers or the like scattered on the metering conveyor belt, the gap width between the metering conveyor belt and Stripping roller seen over its length, is different, proposed in which the metering conveyor belt below the stripping roller is infinitely variable and its height can be adjusted in the transverse direction.
  • the aim of this device is to influence the amount of chips emerging between the stripping roller and the metering conveyor belt, which is then scattered, with regard to the basis weight distribution.
  • a device according to DE-PS 2214 900 for compensating for different grammages in the transverse direction of chip or fiber fleeces or the like for the production of chipboard, fiberboard or the like proves not to be applicable here, since the lifting of the floor belt only acts on one near the floor belt local compaction of the chip material without changing the discharge.
  • the present invention is accordingly based on the object of proposing a method and a device for carrying out this varing method with which the above-mentioned problem can be solved.
  • this object is achieved in that the amount of at least one partial flow is reduced at least at one point along its width from a stray current consisting of several partial flows.
  • variable subsets be withdrawn across its width at a number of points when at least one substream is reduced.
  • the removal of variable partial quantities across the width of at least one partial stream shows that when the chip stream is built up from a plurality of partial streams arranged one above the other, the density distribution over the width can be influenced in accordance with a predetermined profile of the fleece.
  • a device with a chip bunker, a plurality of discharge rollers arranged one above the other, a floor conveyor, entry devices, a cover opposite the discharge rollers and a discharge opening extending over the width of the bunker is proposed, which is characterized in that several height and width-adjustable suction probes predetermined width are arranged relative to the discharge rollers, and that a collecting connection for the suction is provided outside the cover.
  • This device which can also have mechanical discharge devices, such as baffles or rollers, instead of the suction proboscis, achieves a non-reactive reduction in the amount of at least one partial flow.
  • the suction proboscis are arranged in the upper half of the cover opposite the discharge rollers.
  • the suction nozzle By arranging the suction nozzle in the upper half, the local influences caused by the further partial flows are compensated for in a particularly suitable manner.
  • a storage bunker 1 which in the exemplary embodiment is designed as a floor belt bunker
  • chip material 2 to be spread is fed to the bunker via an entry device 3.
  • the entry device 3 can be designed as a scraper belt in order to attach the chip material to be loaded in each case to the chip material 2 already stored in the bunker.
  • Discharge rollers 4 cause the chip material 2 to be scattered.
  • the entire chip material content of the storage hopper 1 is advanced against the rotating discharge rollers 4, and the discharge rollers 4, which are designed as spiked rollers, mill the entire outlet cross section of the amount of chip material contained in the bunker. Partial streams 7 are thus generated over the entire spreading width of the bunker, which combine to form a chip stream 8 which leaves the bunker via a discharge opening 9 which extends over its width.
  • the discharge rollers are arranged behind a cover 10 of the bunker.
  • a conveyor belt (not shown) can also be arranged as a forim belt, on which the stray current 8 is deposited as a chip fleece when the forming belt is moved.
  • suction probes 13 and 14 are provided, which have a certain predetermined suction surface.
  • a row of suction probes 13 is shown schematically in FIG. 1a, which are arranged positioned over the entire width of the bunker. Extracted chip material is fed via suction hoses 20 to a collecting line 22, from which the return transport, as shown in more detail in FIG. 1, takes place to the entrance to the bunker.
  • FIG. 1b shows the defective cross section of a chip fleece 30 when there is no suction.
  • the elevations 31, 32, 33 are eliminated by suction through the proboscis 13, so that a fleece with a flat surface is formed.
  • a predeterminable surface contour 34 as shown in FIG. 1c as an edge elevation of the fleece can also be achieved.
  • the suction proboscis 13 are locked in the position once taken over a holding structure 15. With joints .16 and 17 and brackets 18, 19 arranged thereon, it is possible to move and position the suction proboscis 13 and 14 along the holding structure 15 and also transversely thereto over the entire discharge cross-section which is covered by the discharge rollers 4 to be arrested at predetermined positions. All proboscis 13, 14 are preferably connected to suction hoses 20, 21, which are led through an opening in the cover 10 to a collecting line 22, from which, via a further line 23, the extracted chips are transported back to the storage bunker 1 by the shortest route.
  • the line 23 can consist of a pressure line, in which the conveyance is carried out with the aid of compressed air, and a screw conveyor can also be provided in connection with the guide surface.
  • suction proboscis 13, 14, which are connected to a vacuum-generating system, not shown
  • guide surfaces in a predetermined dimension, comparable to the suction surface of the suction proboscis can also be used, which are also displaceably arranged in a corresponding manner on the holding structure 15, and feed their partial quantities to a collecting vessel arranged on the cover, for example a screw conveyor, which is guided over the entire spreading width of the bunker.
  • This screw conveyor takes care of the removal of the partial quantities released by the individual adjustable and lockable guide surfaces.
  • the removal members such as the suction nozzle or guide surface, are arranged in the upper half of the area of the discharge rollers 4.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP81105215A 1981-07-04 1981-07-04 Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée Expired EP0069162B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8181105215T DE3170270D1 (en) 1981-07-04 1981-07-04 Method and apparatus for controlling the density distribution of a dispersed particle mat
EP81105215A EP0069162B1 (fr) 1981-07-04 1981-07-04 Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée
FI820641A FI73912C (fi) 1981-07-04 1982-02-25 Foerfarande och anordning foer paoverkning av ett utstroebart spaonskikts taethetsfoerdelning.
US06/392,334 US4504182A (en) 1981-07-04 1982-06-28 Procedure for controlling the density distribution of wood chips and device therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81105215A EP0069162B1 (fr) 1981-07-04 1981-07-04 Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée

Publications (2)

Publication Number Publication Date
EP0069162A1 true EP0069162A1 (fr) 1983-01-12
EP0069162B1 EP0069162B1 (fr) 1985-05-02

Family

ID=8187804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105215A Expired EP0069162B1 (fr) 1981-07-04 1981-07-04 Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée

Country Status (4)

Country Link
US (1) US4504182A (fr)
EP (1) EP0069162B1 (fr)
DE (1) DE3170270D1 (fr)
FI (1) FI73912C (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161323A1 (fr) * 1984-04-16 1985-11-21 Bison-Werke Bähre & Greten GmbH & Co. KG Procédé et dispositif pour obtenir une répartition prédéterminée de poids par unité de surface dans une couche de fibres
EP0162118A1 (fr) * 1984-04-16 1985-11-27 Bison-Werke Bähre & Greten GmbH & Co. KG Procédé et dispositif pour obtenir une répartition prédéterminée de poids par unité de surface dans une première couche de fibres
US4636159A (en) * 1984-04-16 1987-01-13 Bison-Werke Bahre & Greten Gmbh & Co. Kg Apparatus for obtaining a predeterminable distribution of weight in the transverse direction of a pre-mat and/or mat
EP0292581A1 (fr) * 1987-05-23 1988-11-30 Carl Schenck Ag Méthode pour répandre une nappe de copeaux
EP0230483B1 (fr) * 1986-01-20 1990-03-28 Carl Schenck Ag Procédé pour uniformiser des particules de dispersion et machine pour exécuter ce procédé
EP0507731A1 (fr) * 1991-03-26 1992-10-07 Matec Holding Ag Procédé et dispositif pour fabriquer d'une pièce moulée fibreuse
DE202018102823U1 (de) 2018-05-22 2019-08-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Streuung eines Vlieses auf einem Formband
EP3572197A1 (fr) 2018-05-22 2019-11-27 Dieffenbacher Gmbh Maschinen- Und Anlagenbau Dispositif et procédé d'étalement d'un non tissé sur une bande de formage

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838750A (en) * 1985-09-13 1989-06-13 Henley Burrowes & Company Limited Storage bunker
US5176295A (en) * 1990-03-13 1993-01-05 Beloit Technologies, Inc. Discharge apparatus for bins
DE102006030122B4 (de) * 2006-06-28 2008-05-21 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Streugutanlage
CN103753686B (zh) * 2013-12-24 2015-12-09 上海人造板机器厂有限公司 一种具有可调节风门的铺装机的抛辊装置
CN110127325B (zh) * 2019-04-15 2020-12-01 洪湖市金叶烟草机械有限公司 一种贮柜出料速度控制方法及系统
DE202023102387U1 (de) * 2023-05-03 2023-05-23 Loibl Förderanlagen GmbH Austragungssystem zum Austragen von Fördergut

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE932200C (de) * 1953-12-06 1955-08-25 Max Himmelheber Dipl Ing Vorrichtung zur Herstellung von Formlingen, Kuchen oder Vliesen aus Spaenen, Fasern und aehnlichen Schuettguetern
DE1093076B (de) * 1958-02-03 1960-11-17 Max Himmelheber Dipl Ing Schuett-, Dosier- und Verteilervorrichtung fuer Holzspaene od. dgl.
US3252186A (en) * 1963-01-21 1966-05-24 Wood Conversion Co Differential fiber dispersing rolls and felting therefrom
DE1728469A1 (de) * 1965-04-15 1972-12-28 Werz Furnier Sperrholz Streuvorrichtung fuer beleimte lignozellulosehaltige Teilchen
DE1728468A1 (de) * 1965-04-15 1972-12-28 Werz Furnier Sperrholz Streuvorrichtung fuer beleimte lignozellulosehaltige Teilchen
DE2535382A1 (de) * 1975-08-08 1977-02-10 Siempelkamp Gmbh & Co Streumaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688393A (en) * 1952-06-24 1954-09-07 Cascades Plywood Corp Material dispenser
DE2032128A1 (de) * 1970-06-30 1972-01-05 Carl Schenck Maschinenfabrik Gmbh, 6100 Darmstadt Walzen-Austragskopf

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE932200C (de) * 1953-12-06 1955-08-25 Max Himmelheber Dipl Ing Vorrichtung zur Herstellung von Formlingen, Kuchen oder Vliesen aus Spaenen, Fasern und aehnlichen Schuettguetern
DE1093076B (de) * 1958-02-03 1960-11-17 Max Himmelheber Dipl Ing Schuett-, Dosier- und Verteilervorrichtung fuer Holzspaene od. dgl.
US3252186A (en) * 1963-01-21 1966-05-24 Wood Conversion Co Differential fiber dispersing rolls and felting therefrom
DE1728469A1 (de) * 1965-04-15 1972-12-28 Werz Furnier Sperrholz Streuvorrichtung fuer beleimte lignozellulosehaltige Teilchen
DE1728468A1 (de) * 1965-04-15 1972-12-28 Werz Furnier Sperrholz Streuvorrichtung fuer beleimte lignozellulosehaltige Teilchen
DE2535382A1 (de) * 1975-08-08 1977-02-10 Siempelkamp Gmbh & Co Streumaschine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161323A1 (fr) * 1984-04-16 1985-11-21 Bison-Werke Bähre & Greten GmbH & Co. KG Procédé et dispositif pour obtenir une répartition prédéterminée de poids par unité de surface dans une couche de fibres
EP0162118A1 (fr) * 1984-04-16 1985-11-27 Bison-Werke Bähre & Greten GmbH & Co. KG Procédé et dispositif pour obtenir une répartition prédéterminée de poids par unité de surface dans une première couche de fibres
US4636159A (en) * 1984-04-16 1987-01-13 Bison-Werke Bahre & Greten Gmbh & Co. Kg Apparatus for obtaining a predeterminable distribution of weight in the transverse direction of a pre-mat and/or mat
EP0230483B1 (fr) * 1986-01-20 1990-03-28 Carl Schenck Ag Procédé pour uniformiser des particules de dispersion et machine pour exécuter ce procédé
EP0292581A1 (fr) * 1987-05-23 1988-11-30 Carl Schenck Ag Méthode pour répandre une nappe de copeaux
US4931243A (en) * 1987-05-23 1990-06-05 Carl Schenck Ag Process and apparatus for spreading a chip web
EP0507731A1 (fr) * 1991-03-26 1992-10-07 Matec Holding Ag Procédé et dispositif pour fabriquer d'une pièce moulée fibreuse
DE202018102823U1 (de) 2018-05-22 2019-08-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Streuung eines Vlieses auf einem Formband
EP3572197A1 (fr) 2018-05-22 2019-11-27 Dieffenbacher Gmbh Maschinen- Und Anlagenbau Dispositif et procédé d'étalement d'un non tissé sur une bande de formage

Also Published As

Publication number Publication date
EP0069162B1 (fr) 1985-05-02
US4504182A (en) 1985-03-12
FI73912C (fi) 1987-12-10
FI73912B (fi) 1987-08-31
DE3170270D1 (en) 1985-06-05

Similar Documents

Publication Publication Date Title
DE2942163C2 (fr)
EP0294616B1 (fr) Procédé de déposition continue d'une couche uniforme d'un matériau à disperser ainsi que machine pour exécuter ce procédé
EP0069162B1 (fr) Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée
EP0292581B1 (fr) Méthode pour répandre une nappe de copeaux
EP0109456A1 (fr) Procédé et dispositif pour égaliser la distribution de densité dans un panneau de bois artificiel
DE1510395B1 (de) Verfahren und Vorrichtung zum OEffnen von Faserflocken,insbesondere zur Faservliesherstellung
DE2335814B2 (de) Verfahren zur mischung von bestandteilen fuer die herstellung von span- faser - o.dgl. -platten aus mischgut unterschiedlicher eigenschaften vor deren dosiertem zufuehren zu einer schuttvorrichtung
DE19835419A1 (de) Vorrichtung und Verfahren zur Windsichtung
DE3202717A1 (de) Zigaretten-fertigungsmaschine
DE2634250B2 (de) Verfahren und Vorrichtung zum Beschicken einer Karde mit Fasermaterial
EP0162118B1 (fr) Procédé et dispositif pour obtenir une répartition prédéterminée de poids par unité de surface dans une première couche de fibres
EP0230483B1 (fr) Procédé pour uniformiser des particules de dispersion et machine pour exécuter ce procédé
DE69211664T2 (de) Verfahren und Anlage zur Herstellung, im Dauerverfahren, einer Mineralwollmatte
DE102016113014B4 (de) Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
DE3919720C2 (de) Verfahren und Vorrichtung zur gleichzeitigen Herstellung von zwei Endlos-Tabaksträngen
DE2529203C3 (de) Vorrichtung zum Trockenformen einer Faserschicht
EP0161323A1 (fr) Procédé et dispositif pour obtenir une répartition prédéterminée de poids par unité de surface dans une couche de fibres
AT391150B (de) Vorrichtung zum herstellen eines faservlieses
DE2422487A1 (de) Verfahren zur verbesserung des sichteffektes beim aufstreuen eines vlieses aus unsortierten bestandteilen, vorzugsweise pflanzlicher herkunft auf eine transportvorrichtung und einrichtung zur ausuebung des verfahrens
EP0111025A1 (fr) Dispositif de production de plaques agglomérées
EP0511425A1 (fr) Dispositif pour déposer en continu un matelas de fibres
CH682930A5 (de) Verfahren und Vorrichtung zum Herstellen eines Faservlieses.
DE8119524U1 (de) Vorrichtung zur Beeinflussung der Dichteverteilung eines zu streuenden Spänevlieses
DE10101380B4 (de) Sichterbeschickungungsstrecke bei Anlagen zur Herstellung von Holzfaserplatten
EP0649605A2 (fr) Procédé et dispositif pour séparer des fibres de tabac

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19820626

AK Designated contracting states

Designated state(s): BE CH DE FR IT LI SE

RBV Designated contracting states (corrected)

Designated state(s): BE CH DE FR IT LI SE

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR IT LI SE

REF Corresponds to:

Ref document number: 3170270

Country of ref document: DE

Date of ref document: 19850605

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19880705

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19880731

Ref country code: CH

Effective date: 19880731

Ref country code: BE

Effective date: 19880731

BERE Be: lapsed

Owner name: CARL SCHENCK A.G.

Effective date: 19880731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 81105215.8

Effective date: 19890510