EP3572197A1 - Dispositif et procédé d'étalement d'un non tissé sur une bande de formage - Google Patents

Dispositif et procédé d'étalement d'un non tissé sur une bande de formage Download PDF

Info

Publication number: EP3572197A1
Authority: EP; European Patent Office
Prior art keywords: opening; cover plate; openings; forming belt; discharge device
Prior art date: 2018-05-22
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

EP19175961.2A

Other languages

German (de)

English (en)

Other versions

EP3572197B1 (fr

Inventor

Klaus Plutowsky

Reinhard Schwinn

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 Maschinen und Anlagenbau

Original Assignee

Dieffenbacher GmbH Maschinen und Anlagenbau

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.)

2018-05-22

Filing date

2019-05-22

Publication date

2019-11-27

2019-05-22 Application filed by Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen und Anlagenbau

2019-11-27 Publication of EP3572197A1 publication Critical patent/EP3572197A1/fr

2024-12-04 Application granted granted Critical

2024-12-04 Publication of EP3572197B1 publication Critical patent/EP3572197B1/fr

Status Active legal-status Critical Current

2039-05-22 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
- 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
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
- 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 present invention relates to a device for scattering a nonwoven on a forming belt, in particular in the course of the production of material plates, according to the preamble of claim 1. Furthermore, the invention relates to a method for scattering a nonwoven on a forming belt according to the preamble of claim.
a mixture of particles or fibrous materials and a binder is scattered to a nonwoven on a forming or conveyor belt.
This grit mat is then fed to a possibly required pretreatment of a continuous or discontinuous pressing, which can be done by means of pressure and / or heat.
a continuous or discontinuous pressing such as MDF (medium-density fiberboard) or OSB (Oriented Strand Board or chipboard) can be produced.
the compression takes place mostly in a continuous belt press, in which a spreading material mat by means of a circulating flexible belt, in particular a steel strip, the compression is supplied.
a plurality of press cylinders apply a pressing pressure across the belt to the grit mat while the grit mat is heated by hot plates. Between the belt and the press cylinders rolling rods are usually arranged to reduce friction and pressure transfer.
Suitable methods and apparatus for producing such nonwovens are with EP 0 069 162 B1 .
discharge devices are disclosed in these devices, which selectively divert material from the flow of material during the production of the nonwoven and with an adjustable profile across the width of the endlessly circulating forming belt in order to achieve the predetermined density properties of the nonwoven. In some cases, these discharge devices also have options for metering the discharged material to the fleece, preferably at another location or evened out.
the present invention has for its object to improve the adjustability of the device for producing a nonwoven over the prior art. In an extension of this task, it should be avoided, in particular, that the material to be extracted accumulates in front of the openings of the discharge devices or obstructs one another and in particular makes it difficult to regulate.
the invention is based on a device for scattering a nonwoven on a continuously circulating below the device forming belt, especially in the course of the production of material plates of free-flowing material such as fibers or chips, the device having an upper inlet opening for the task of the material and a lower outlet opening for Dispensing of the material on the forming belt, at least one distribution roller and a scattering roller transversely to the transport direction of the forming belt and a discharge device for removing portions of material comprises, wherein on the discharge device transversely to the transport direction a plurality of adjustable in size openings are arranged, for the deposition of material the device is operatively connected to a conveying device for the material passing through the openings.
the solution of the task for the above-mentioned device is that in the discharge a cover plate and adjacent a plurality of sliders are arranged with an opening, wherein for adjusting the size of the opening, the cover plate partially covers the breakthrough and the cover plate and / or Slider are arranged displaceably by means of at least one actuator.
the adjustable openings increase in the fall direction of the material, ie preferably has an upper fixed boundary and an expanding opening opens downward in the direction of the forming belt.
the lower boundary forming belt side
an opening will be arranged in the device such that a material stream which impinges on the discharge device or the openings makes an opening with its upper region and the lower region of the material stream is diverted downwards in the direction of the forming belt.
the lower end of the cover plate is arranged as the upper boundary of the opening and the opening of a slider as the lower boundary of the opening in the direction of fall of the material. This is in Entry direction of the material in the discharge device, the cover plate in front of the slide.
a fixed cover plate for adjusting the opening of the slide with its breakthrough substantially against the material flow direction in the device ie from top to bottom in the direction of the forming belt
a fixed cover plate for adjusting the opening of the slide with its breakthrough substantially against the material flow direction in the device ie from top to bottom in the direction of the forming belt
At least one nozzle for pneumatic cleaning of parts of the discharge device can be arranged in the discharge device.
the cover plate may also have an opening and preferably be arranged in a size that substantially covers the range of movement of the slider.
the slide is substantially covered and caking between the slide and cover plate can be scraped by moving each other.
another cover plate may be arranged opposite the first cover plate relative to the openings, wherein preferably the further cover plate releases the region of the adjustable openings but covers the wider area of the slides.
the discharge device can be movable.
it may also be arranged vertically adjustable with respect to the forming belt. This serves for improved regulation as a function of the type and / or density of the material or of the material mixture.
reinforced material mixtures are used with a high proportion of recycled wood, which another throw and Distribution characteristic may have in the device. Changes in the particle size distribution may also make it necessary to arrange the discharge device at a different position or to change the angularity of the discharge device relative to the distribution rollers.
a preferred control or regulating device will provide a measuring device for the basis weight or the density distribution of the web at a predetermined distance from the device and change the device respectively the position of the discharge device and / or the slide / cover plates to each other via the measurement result or a crizalgorhythmus interpret the measurement result to reach the specified setpoint.
a generic method for scattering a nonwoven on a below a device for scattering material endlessly circulating mold belt consists essentially in that through an upper inlet material into the device and The material is guided onto the forming belt via a lower outlet opening and the material is essentially distributed by a distributing roller in the device and is applied to the forming belt by means of at least one scattering roller and taken in sections by a discharge device in the device transversely to the transport direction of the endless forming belt is made by several adjustable in size openings feed the material passing through a conveyor for removal from the device.
the invention for the method is that the adjustable openings of the discharge device are formed by a cover plate and a plurality of slides with openings, wherein the opening of a slide to reduce the opening is partially covered by the cover plate by means of at least one actuator, the cover plate and / or the slides are moved to each other.
the lower end of the cover plate is preferred as the upper boundary of the opening and the breakthrough of a slider than the lower in the direction of the material Limitation of the opening used.
the slide with its opening is particularly preferably displaced substantially counter to the material flow direction for reducing the opening and in the material flow direction for enlarging the opening.
At least one nozzle for the pneumatic cleaning of parts of the discharge device can be used in the discharge device.
the cover plate may also have an opening and preferably be used in a size which allows to substantially cover the range of movement of the slider.
another cover plate may lie opposite the first cover plate relative to the openings, wherein the further cover plate releases the region of the adjustable openings but covers the lower area of the slides.
the discharge device can be arranged to be movable, in particular height-adjustable with respect to the forming belt.
the stream of material striking the discharge device is guided onto the openings in such a way that the upper part of the stream facing away from the forming belt is guided into the opening and the lower region of the stream is deflected depending on the size of the opening, for example stopped by the slider and guided down towards the forming belt.
FIG. 1 In a longitudinal section through the device 10 along the transport direction 13 of the endlessly circulating forming belt 12, the material flow of the material 1 through the device and the production of the fleece 11 on the forming belt 12 are shown schematically.
the material 1 passes in the direction of fall 9 through an upper opening in the device 10, is therein by at least one distribution roller 14 in the device and distributed and passes on optional rake 7 finally on at least one scattering roller 15, which the material 1 on the forming belt 12 stores.
the optional rakes 7 serve to divert a portion of the material and pass a portion in the throw or fall direction to allow for a predetermined distribution within the device.
At least one discharge device 2 is arranged, which in an exemplary position in the device 10 in FIG FIG. 1 is shown and in FIG. 2 is explained in detail by an enlarged view.
different material flows are formed by the direction of fall and / or the distribution rollers 14, which can be. If necessary, also be controlled by the optional rake 7 accordingly.
the material flow is diverted downwards in the direction of the forming belt 12 or the scattering rollers 15 and another part is conveyed through the openings 3, if they are open, in the discharge device 2 a conveyor 21 which removes the material 1 from the device 10.
a conveying device 21 can along an axis 16 transverse to the forming belt 12, a screw conveyor (not shown) in a material 1-catching screw trough 19 may be arranged, which transports the material 1 in the screw trough.
the opening 3 is formed by an opening 6 in a slide 5 and covered to adjust the size of the opening 3 by means of a cover plate 4. If an opening 3, which are across the width of the device 10, respectively transversely to the transport direction 13 of the forming belt 12, arranged in a variety are changed in size, the corresponding slide 5 with its opening 6 and / or the corresponding to This cover associated cover 4 are moved. The more the cover plate 4 covers the opening 6 of the slider 5, the smaller the opening 3 will be.
the adjustability of the device 10 can be significantly improved if the opening 3 is formed from two different sliding plates, which together form an adjustable opening 3.
the adjustability is then ensured outstanding if the upper boundary of the opening 3 is arranged substantially at the level of the incoming material 1, and only the lower boundary of the opening 3 is adjusted in height, the material 1 preferably only to the lower boundary of the opening 3 bounces and is deflected in the direction of the forming belt 12. This avoids that above the opening 3 impinging material 1 falls down and obstructs the passage of the material 1 in the direction of passage 8 at the height of the opening 3 or even blocked.
an actuator 17 is shown with a connection 18 to a slider 5 to move the slider 5.
the opening 3 is reduced by the movement of the slider 5 from bottom to top and vice versa correspondingly increased when the slider 5 is moved by the actuator 17 down.
a further cover plate 4 ' may be arranged, which covers the lower region of the slide 5 and at the same time prevents material 2 from entering the interior (outside of the screw trough 19) of the discharge device 2.
the further cover plate 4 ' can also be arranged on the other side of the slider 5, in order to provide the slider 5 on slipping material 1 no unnecessary friction point.
a pneumatic nozzle 20 can be arranged within the discharge device 2, in order to convey in particular clogging material 1 back into the device 10 or into the screw trough 19.

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)
Nonwoven Fabrics (AREA)
Preliminary Treatment Of Fibers (AREA)

EP19175961.2A 2018-05-22 2019-05-22 Dispositif et procédé d'étalement d'un non tissé sur une bande de formage Active EP3572197B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102018112166.0A DE102018112166A1 (de)	2018-05-22	2018-05-22	Vorrichtung und Verfahren zur Streuung eines Vlieses auf einem Formband

Publications (2)

Publication Number	Publication Date
EP3572197A1 true EP3572197A1 (fr)	2019-11-27
EP3572197B1 EP3572197B1 (fr)	2024-12-04

Family

ID=66630256

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19175961.2A Active EP3572197B1 (fr)	2018-05-22	2019-05-22	Dispositif et procédé d'étalement d'un non tissé sur une bande de formage

Country Status (3)

Country	Link
EP (1)	EP3572197B1 (fr)
CN (1)	CN110509392B (fr)
DE (1)	DE102018112166A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0069162A1 (fr)	1981-07-04	1983-01-12	Carl Schenck Ag	Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée
EP0109456A1 (fr) *	1982-11-20	1984-05-30	Carl Schenck Ag	Procédé et dispositif pour égaliser la distribution de densité dans un panneau de bois artificiel
EP0230483A1 (fr)	1986-01-20	1987-08-05	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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1840455A (en) *	1926-11-01	1932-01-12	Lea James Edward	Apparatus for the measurement of granular materials
GB785394A (en) *	1955-09-22	1957-10-30	Changewood Corp	Improvements relating to the manufacture of structures produced by depositing fibrous elements
GB840268A (en) *	1956-11-02	1960-07-06	Interwood Ag	"a process and apparatus for the continuous manufacture of sheet-like articles from a pourable fibrous substance, in particular figured-wood sheets from synthetic wood shavings"
DE3271697D1 (en) *	1982-12-10	1986-07-17	Schenck Ag Carl	Device for the production of particle board
DE19916447A1 (de) *	1999-04-12	2000-10-19	Dieffenbacher Schenck Panel	Formstation
ES2262673T3 (es) *	2000-08-11	2006-12-01	Flakeboard Company Limited	Procedimiento y dispositivo para el encolado de fibras secas previstas para la fabricacion de placas de fibra.
DE102009054807A1 (de) *	2009-12-16	2011-06-22	Dieffenbacher GmbH + Co. KG, 75031	Verfahren und Streukopf zur Herstellung einer Streugutmatte aus zumindest einer orientiert gestreuten Schicht im Zuge der Herstellung von Holzwerkstoffplatten
EP3280575B1 (fr) *	2015-04-10	2019-10-02	Mayfair Vermögensverwaltungs SE	Panneau

2018
- 2018-05-22 DE DE102018112166.0A patent/DE102018112166A1/de active Pending
2019
- 2019-05-20 CN CN201910419088.3A patent/CN110509392B/zh active Active
- 2019-05-22 EP EP19175961.2A patent/EP3572197B1/fr active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0069162A1 (fr)	1981-07-04	1983-01-12	Carl Schenck Ag	Procédé et dispositif pour contrôler la répartition de densité dans une nappe de particules dispersée
EP0109456A1 (fr) *	1982-11-20	1984-05-30	Carl Schenck Ag	Procédé et dispositif pour égaliser la distribution de densité dans un panneau de bois artificiel
EP0230483A1 (fr)	1986-01-20	1987-08-05	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

Also Published As

Publication number	Publication date
EP3572197B1 (fr)	2024-12-04
DE102018112166A1 (de)	2019-11-28
CN110509392B (zh)	2022-10-14
CN110509392A (zh)	2019-11-29

Publication	Publication Date	Title
EP1171269B1 (fr)	2004-03-17	Poste de formage
EP2531331B1 (fr)	2018-07-11	Procédé et installation de fabrication d'un mat de matériau granulaire constitué d'au moins une couche distribuée
EP0292581B1 (fr)	1990-11-14	Méthode pour répandre une nappe de copeaux
EP1938934B1 (fr)	2013-02-20	Procédé et station de formage destinés à la formation d'une nappe de matière épandable lors de la fabrication de plaques en matières premières
DE102009054807A1 (de)	2011-06-22	Verfahren und Streukopf zur Herstellung einer Streugutmatte aus zumindest einer orientiert gestreuten Schicht im Zuge der Herstellung von Holzwerkstoffplatten
DE10018218A1 (de)	2001-10-25	Formstation
EP3572197B1 (fr)	2024-12-04	Dispositif et procédé d'étalement d'un non tissé sur une bande de formage
DE4326148B4 (de)	2010-04-08	Einrichtung zur Streuung von Fasern, insbesondere von Spänen
EP2531332A1 (fr)	2012-12-12	Procédé et installation de réalisation d'une nappe de matière particulaire à partir d'au moins une couche de matière particulaire, et nappe de matière particulaire à comprimer dans une presse au cours de la réalisation de plaques en matériau dérivés du bois
EP2504135B1 (fr)	2013-10-02	Installation et procédé de formage d'une nappe de matériau de dispersion sur une bande de formage lors de la fabrication de plaques de matériau
DE19916448A1 (de)	2000-10-19	Streustation für Faserplatten
DE202018102823U1 (de)	2019-08-26	Vorrichtung zur Streuung eines Vlieses auf einem Formband
DE4213928A1 (de)	1993-11-04	Anlage zum streuen von beleimten spaenen, fasern und dergleichen teilchen
EP3976333A1 (fr)	2022-04-06	Dispositif et procédé de fabrication d'un non-tissé
DE102017130159B4 (de)	2019-09-05	Entsorgung unverpressten Materials in einer Presse zum kontinuierlichen Herstellen von Werkstoffplatten
EP3976334B1 (fr)	2023-09-06	Dispositif et procédé de fabrication d'une nappe de fibres
DE4234213C2 (de)	2002-04-11	Anlage zur Herstellung von Spanplatten
DE102017111093B4 (de)	2020-01-30	Streuanlage zur Herstellung einer Streugutmatte und Verfahren zum Betreiben einer solchen Streuanlage
DE102016105565B4 (de)	2018-05-09	Verfahren zur Stahlbandführung in einer kontinuierlich arbeitenden Presse und Anlage
DE10361837B4 (de)	2009-09-03	Vorrichtung und Verfahren zur kontinuierlichen Herstellung von Platten, Balken, Profilen oder ähnlichem aus Matten von Spänen und/oder Fasern
DE202019102961U1 (de)	2020-08-27	Vorrichtung zur Herstellung eines Vlieses
DE102017110600B4 (de)	2023-09-07	Sichter
DE202019102962U1 (de)	2020-08-27	Vorrichtung zur Herstellung eines Vlieses
DE2403776A1 (de)	1974-08-08	Vorrichtung zur herstellung eines strangfoermigen koerpers aus schaumkunststoff
DE202015102415U1 (de)	2016-08-15	Vorrichtung zum Streuen eines Vlieses im Zuge der Herstellung von Werkstoffplatten und eine Werkstoffplatte

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