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EP3976332A1 - Dispositif d'encollage de particules au cours de la fabrication de plaques de matériau et un procédé pour faire fonctionner le dispositif - Google Patents

Dispositif d'encollage de particules au cours de la fabrication de plaques de matériau et un procédé pour faire fonctionner le dispositif

Info

Publication number
EP3976332A1
EP3976332A1 EP20733680.1A EP20733680A EP3976332A1 EP 3976332 A1 EP3976332 A1 EP 3976332A1 EP 20733680 A EP20733680 A EP 20733680A EP 3976332 A1 EP3976332 A1 EP 3976332A1
Authority
EP
European Patent Office
Prior art keywords
chute
wall
layer
plastic
particles
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.)
Withdrawn
Application number
EP20733680.1A
Other languages
German (de)
English (en)
Inventor
Konstantin PENSKI
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.)
Filing date
Publication date
Application filed by Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen und Anlagenbau
Publication of EP3976332A1 publication Critical patent/EP3976332A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B27N1/00—Pretreatment of moulding material
    • 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
    • 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
    • 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
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • 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
    • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres

Definitions

  • the invention relates to a device for gluing particles, which at least partially consist of fibers and / or chips suitable for the production of material panels according to the preamble of
  • the invention further relates to a method for operating a device for applying glue to particles which at least partially consist of fibers and / or chips suitable for the production of material panels according to the preamble of patent claim 18.
  • Grit mat by means of spreading machines plays an outstanding role, as the quality of the grit mat created is an important factor alongside the quality of the raw materials.
  • Binder is forcing producers to use more and more efficient processes develop. Particular focuses are particularly small
  • a binding agent is understood to be a so-called adhesive liquor, the main component of which consists of an adhesive.
  • adhesive liquor the main component of which consists of an adhesive.
  • Formaldehyde scavengers, dyes, insect repellants and fungus repellants and other additives are added. It is also common to use the adhesive without additives.
  • the following binders can be used without any claim to completeness: isocyanates, MDI, melamine urea formaldehyde (MUF),
  • Urea formaldehyde (UF), MUPF or PF Urea formaldehyde (UF), MUPF or PF.
  • the gluing is typically done in such a way that the grit
  • the chute is introduced and the binding agent is applied to it by means of nozzles which are arranged in the chute or in front of it
  • the glued spreading material is usually placed in a drum with rotating conveying tools downstream of the chute
  • the grit can be spread without one
  • Such a device is known from DE 10 2010 064 339 A1, for example. In these devices it usually happens that binders and particles glued with the binder stick to the inner wall of the binder
  • fluid-carrying coupling means are provided, which transfer cooling fluid from a stationary part of the system to the rotating one
  • Allow chute walls and / or the rotating doctor blades can represent a great deal of effort and it may be difficult to achieve a permanently effective seal.
  • the device for gluing particles which at least partially consist of fibers and / or chips suitable for the production of material panels, is based on a device which has:
  • a chute a wall delimiting the chute, a
  • Dosing device for introducing the particles into the chute and at least one nozzle for applying a binding agent to the particles.
  • the object of the invention is achieved for the device in that
  • a plastic is arranged as the first layer on the side of the particles to be glued.
  • the invention understands a chute one on two
  • the preferably hollow-cylindrical, conical or essentially similar in cross-section chute has an inside and at least one area of the inside or wall which could come into contact with the binder or with fibers containing binder.
  • Understood enclosing housing which can have a homogeneous or heterogeneous layer structure, wherein in the case of heterogeneous layers, the layers are adjacent to one another and thus form a composite.
  • a wall consists of an internal plastic layer, which is particularly well suited to avoid caking due to binding agents or glue.
  • the second layer on the outside can also be a plastic which, for example, has better rigidity or toughness than the first inner layer.
  • layers spaced apart by air or by fluid are interpreted according to the invention as multiple walls, for example in the case of double walls with passage of fluids for cooling.
  • the plastic can be an elastomeric polyurethane, an elastomer or a silicone. These plastics preferably have poor adhesion to the binder. At the same time, it has surprisingly been shown that, despite the abrasive effect of the falling particles, these plastics can have sufficient stability for continuous operation.
  • one or the other can preferably
  • outer layer essentially statically load-bearing for the first inner one Be arranged layer of the wall. This is particularly preferably the case with a two-layer design of the wall when the outer layer consists of hard or fiber-reinforced plastic or metal.
  • the plastic preferably for a wall with a layer, is arranged with a wall thickness of at least 10 mm.
  • the construction of a wall, particularly preferably a single-layer wall, has the advantage of reduced static charging from the falling particles.
  • an exciter on the wall preferably a knocker or a vibrator, to initiate shocks and / or vibrations
  • the vibrations or impacts prevent the glued particles or particles from getting stuck and thus sticking
  • a means for coupling the exciter can be arranged on the wall with a force fit, material fit or form fit. Such a coupling increases the stability of the wall or the chute.
  • the means for coupling the exciter can be cast into the wall and / or the plastic.
  • a plate, a ring or a housing would be particularly preferred as the means.
  • the invention understands a tire or housing to be a type of cage which encloses the cross section of the chute or the wall so that the wall can be caused to vibrate or oscillate evenly.
  • the plastic can be mixed with antistatic additives or be encapsulated.
  • the plastic with a wall thickness of 2 mm to 10 mm, preferably 4 mm to 8 mm, most preferably 5 mm to 7 mm.
  • the drop height of the chute, the cross section, the static load-bearing capacity of the plastic and the material to be glued play an essential role.
  • a fiber-reinforced plastic can be arranged as at least one of the layers.
  • the cross-section of the chute can be reduced in the direction of the fall of the material in order to mix it again when it falls and to introduce it into the mixer in a targeted manner.
  • the cross-section of the chute can be made essentially round when the particles enter and essentially rectangular when the particles exit.
  • a one-piece wall of the chute is arranged, preferably cast or injection-molded from plastic.
  • a scraper can be arranged in the chute to clean the inner wall.
  • a knife-like cutting edge preferably made of metal or plastic, or a plastic or rubber lip that comes into contact with the inner layer for cleaning can be arranged on the scraper. This can ensure that the surface of the wall or the inner layer made of plastic is not stressed or scratched too much.
  • the scraper can be made movable and / or the chute or its wall can be designed to be movable.
  • a sliding mechanism for the chute can be arranged for active or passive movement of the same from an operating position to a cleaning position and vice versa.
  • the chute according to the invention can be used as a
  • Main chute and / or be arranged as a secondary chute are Main chute and / or be arranged as a secondary chute.
  • the chute according to the invention can thus be used as a replacement chute when the main chute is cleaned.
  • the chute according to the invention can serve as a full chute and possibly even a replacement chute in the same embodiment
  • the user saves on highly complex cleaning and cooling systems when using inexpensive plastic chutes.
  • the solution to the problem for a method for operating a device for applying glue to particles which is at least partially made for the setting of Material sheets of suitable fibers and / or chips, includes the generic chute and consists in that a chute is used in which a single-layer wall as the one layer or a multilayer wall as the first layer on the side of the particles to be glued a plastic is used and the chute is replaced at specified intervals or if it is too dirty.
  • Contaminants or cleaning processes can, for example
  • a corresponding frame device is particularly preferably provided in the device, in which the chute can be suspended at a predetermined and mechanically secured location.
  • Figure 1 is a schematic side view of a metering device
  • Figure 2 shows a detail II with an enlarged representation of a
  • Figure 3 shows a detail III with an enlarged representation of a
  • the drawing shows a device for applying glue to particles, which can essentially consist of chips and / or fibers and are subsequently pressed to produce material sheets or similar shaped bodies.
  • the particles 1 arrive in a system for the production of material panels in a metering device 2 which, according to the present embodiment, is designed as an endlessly revolving conveyor belt. Means (not shown) can be provided which the discharge per
  • the chute 10 or at least the lower part under the nozzles 6 can be moved in order to clean it more easily. It can also be useful in this context to provide a further chute 10 as a replacement.
  • the particles 1 exit through the nozzles 6 at the lower end of the chute 10 and are either transferred for further use or, as in the exemplary embodiment, directly to a mixing device 7.
  • a mixing device 7 designed here as a horizontal mixer, has mixing tools 8 on a rotating shaft 9 and the particles 1 are discharged accordingly mixed at the other end.
  • the wall 3 of the chute is excited at predetermined intervals or continuously by means of an exciter 14.
  • the excitation can be transmitted directly to the wall 3 of the chute 10 or, as shown here, is transmitted via a means 15 for initiating the impulses or vibrations is transmitted to the wall 3.
  • the means for introducing the excitation can be designed circumferentially along the wall 3 in order to avoid the impacts or
  • FIG. 2 which shows an enlarged section II according to FIG. 1, the means for initiating the
  • the wall 3 is designed in one layer with a wall thickness 13.
  • the means for introducing the excitation can be designed to run around the wall 3 in order to distribute the shocks or vibrations evenly over the circumference.
  • Several points at the level of the chute 10 can also be provided for introducing excitation.
  • FIG. 3 which shows an enlarged section III according to FIG. 1, the wall 3 is shown as a multi-layer design, here two layers, the inner layer 4 being made of plastic and the outer layer 12 of another solid one
  • the sheet no longer has to be made of an expensive and resistant material, for example stainless steel, but can also be made of inexpensive tool steel.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Chutes (AREA)

Abstract

L'invention concerne un dispositif d'encollage de particules, qui sont composées au moins partiellement de fibres et/ou copeaux adaptés pour la fabrication de plaques de matériau, comprenant un puits de chute (10) comprenant une paroi (3) limitant le puits de chute (10), un dispositif de dosage (2) pour l'introduction des particules (1) dans le puits de chute (10) et au moins une buse (6) pour l'application d'un agent liant (11) sur les particules (1). L'invention se caractérise essentiellement par le fait qu'une matière plastique est disposée, dans le cas d'une paroi (3) monocouche comme la couche (4), ou dans le cas d'une paroi (3) multicouche comme la première couche (4) du côté des particules (1) à encoller.
EP20733680.1A 2019-05-26 2020-05-26 Dispositif d'encollage de particules au cours de la fabrication de plaques de matériau et un procédé pour faire fonctionner le dispositif Withdrawn EP3976332A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019114039.0A DE102019114039A1 (de) 2019-05-26 2019-05-26 Vorrichtung zur Beleimung von Partikeln im Zuge der Herstellung von Werkstoffplatten und ein Verfahren zum Betreiben der Vorrichtung
PCT/EP2020/064507 WO2020239727A1 (fr) 2019-05-26 2020-05-26 Dispositif d'encollage de particules au cours de la fabrication de plaques de matériau et un procédé pour faire fonctionner le dispositif

Publications (1)

Publication Number Publication Date
EP3976332A1 true EP3976332A1 (fr) 2022-04-06

Family

ID=71108546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20733680.1A Withdrawn EP3976332A1 (fr) 2019-05-26 2020-05-26 Dispositif d'encollage de particules au cours de la fabrication de plaques de matériau et un procédé pour faire fonctionner le dispositif

Country Status (4)

Country Link
EP (1) EP3976332A1 (fr)
CN (1) CN113874182B (fr)
DE (1) DE102019114039A1 (fr)
WO (1) WO2020239727A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012104541U1 (de) * 2012-11-22 2014-02-25 Dieffenbacher GmbH Maschinen- und Anlagenbau Fallschachtanordnung
DE202013105331U1 (de) * 2013-11-22 2014-03-24 Dieffenbacher GmbH Maschinen- und Anlagenbau Fallschachtanordnung mit verbesserter Reinigung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740676C2 (de) * 1997-09-16 2003-07-17 Fraunhofer Ges Forschung Verfahren zum Beleimen von Fasern
US20030127763A1 (en) * 2001-08-16 2003-07-10 Josef Stutz Mechanically glued board of wood material
DE10247413B4 (de) * 2002-10-11 2009-05-07 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Anlage zum Beleimen von Fasern für die Herstellung von Faserplatten, insbesondere MDF-Platten oder dergleichen Holzwerkstoffplatten
IT1399772B1 (it) * 2010-04-30 2013-05-03 Imal Srl Apparato per l'iniezione di componenti chimici in un flusso di materiale legnoso incoerente
DE102010064339A1 (de) * 2010-12-29 2012-07-05 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Vorrichtung zur Benetzung von Streugut insbesondere von Fasern und/oder Spänen, mit einem Fluid
DE202012104538U1 (de) * 2012-11-22 2014-04-29 Dieffenbacher GmbH Maschinen- und Anlagenbau Fallschachtanordnung mit zweifacher Reinigungseinrichtung, insbesondere für eine Vorrichtung zur Beleimung
DE102012111307A1 (de) * 2012-11-22 2014-05-22 Dieffenbacher GmbH Maschinen- und Anlagenbau Fallschachtanordnung mit zweifacher Reinigungseinrichtung, insbesondere für eine Vorrichtung zur Beleimung von Partikeln im Zuge der Herstellung von Werkstoffplatten
DE102013104652A1 (de) * 2013-05-06 2014-11-06 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Vorrichtung zur Beleimung von Spänen, Fasern oder faserähnlichem Material im Zuge der Herstellung von Werkstoffplatten
DE102013226510B4 (de) * 2013-12-18 2016-10-27 Mayfair Vermögensverwaltungs Se Vorrichtung und Verfahren zur Herstellung einer Platte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012104541U1 (de) * 2012-11-22 2014-02-25 Dieffenbacher GmbH Maschinen- und Anlagenbau Fallschachtanordnung
DE202013105331U1 (de) * 2013-11-22 2014-03-24 Dieffenbacher GmbH Maschinen- und Anlagenbau Fallschachtanordnung mit verbesserter Reinigung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020239727A1 *

Also Published As

Publication number Publication date
CN113874182B (zh) 2022-12-02
DE102019114039A1 (de) 2020-11-26
WO2020239727A1 (fr) 2020-12-03
CN113874182A (zh) 2021-12-31

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