EP2531332A1 - 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 - Google Patents

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

Info

Publication number
EP2531332A1
EP2531332A1 EP11710669A EP11710669A EP2531332A1 EP 2531332 A1 EP2531332 A1 EP 2531332A1 EP 11710669 A EP11710669 A EP 11710669A EP 11710669 A EP11710669 A EP 11710669A EP 2531332 A1 EP2531332 A1 EP 2531332A1
Authority
EP
European Patent Office
Prior art keywords
mat
scattering
width
grit
spreading
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Withdrawn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
EP11710669A
Other languages
German (de)
English (en)
Inventor
Gernot Von Haas
Peter Rath
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.)
Filing date
Publication date
Application filed by Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen und Anlagenbau
Publication of EP2531332A1 publication Critical patent/EP2531332A1/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Withdrawn legal-status Critical Current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
    • 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
    • B27N3/183—Forming the mat-edges, e.g. by cutting

Definitions

  • the invention relates to a method for producing a spreading material mat from at least one scattered layer for pressing in a press in the course of the production of wood-based panels according to the preamble of
  • Claim 1 a plant for producing a grit mat of at least one scattered layer for pressing in a press in the course of the production of wood-based panels according to the preamble of
  • a mixture of particles or fibrous materials and a binder to a Scattering mat scattered on a forming or conveyor belt the grit mat is then fed to any necessary pretreatment and finally a compression.
  • usually discontinuous floor presses and continuously operating presses are used, wherein in the latter between two rotating steel belts a scattered pressed material mat is pressed with glued scattering particles under pressure and heat input.
  • MDF pure particle plates
  • CONFIRMATION COPY wood chips are also used, which are usually oriented and scattered in order to increase the strength and strength of the wooden boards made in length and width. It will be
  • OSB and OSL boards are produced on continuous double belt presses or cycle presses.
  • Chips or chips tend to leave inaccurate gaps in their removal from the grit mat.
  • Grit mat is to be carried out, are usually in
  • this solution means an advantage in the compression, since thus the necessary measures for a marginal increase of
  • Grit mat are created and thus even with a bulging of the grit mat in the press in the edge regions a slight increase in the density or over the entire surface of a material plate
  • a form strand usually corresponds to the endless forming belt with scattering heads arranged above it for "shaping" a grit mat can have a length of up to 50 m
  • Pretreatments such as in steam injection plants, hot-air devices,
  • Pre-pressing or the like To make matters worse, that with several scatter heads in a row, minimal deviations of the edge litter quality or of the location can occur, which also worsen the quality of the longitudinal edges of a litter mat.
  • a grit mat usually has to be trimmed at the longitudinal edges before it can be trimmed by the gripper mat
  • Form strand can be transferred to the press. Especially at the continuous production in a continuous operation
  • Double belt press is to be avoided that during the transfer to the steel strips of the press edge pieces of the spreading material mat uncontrollably crumble and fall into the transfer gap or cake on the lower steel strip of the press.
  • devices for edge trimming a grit mat which trim the grit mat in the form of strand at the longitudinal edges.
  • This has the economic advantage that the resulting grit can be returned to the scattering process immediately without the material having to go through the elaborate pre-production (preparation, drying, gluing).
  • This measure limits, since the back-guided grit is already glued for a long period of time and the binder cures without supply of pressure and heat over time. It should also be the goal to keep the amount of grit returned as low as possible. It is obvious, however, that after the above
  • unsightly discolorations on the surface (cloud formation) or even density changes with a corresponding notch effect thus appear in the spreading material mat or in the material plate.
  • the invention has for its object a method, a system and a grit mat for producing at least one layer of a
  • Basis weight as the average basis weight of the grit mat and / or as the Dosier vomitis DFG is scattered.
  • the solution for a plant is that to set a substantially lower basis weight than the average
  • Weight per unit area of the spreading material mat and / or at least one mechanical guiding device is arranged as the metering surface weight on the longitudinal edges of the spreading material mat between the metering device of the bunker and the scattering device of the spreading head.
  • a grit mat is characterized, in particular produced by the method according to claim 1 and / or in a system according to claim 10, characterized in that at both longitudinal edges of the grit mat in the
  • Grit mat is arranged. Among other things, it is provided that preferably from the longitudinal edges to the intended
  • Scattering, or in the field of scattering heads have a low basis weight, in particular as the average basis weight of
  • Grit mat This is preferably achieved in that in the falling material flow parts of the material to be spread on the edge regions, seen transversely over the forming belt, during the passage in the scattering head in the direction of Center longitudinal extension of the molding strand respectively the spreading material mat are moved. It turns out that viewed from a longitudinal side in the direction of the center of a grit mat only a lower basis weight in the grit mat arises, that detached from a higher basis weight and finally in the average surface weight of
  • a possible guiding device preferably does not influence the entire falling material stream or material stream to be introduced into the scattering head, but only a part thereof. This is necessary to avoid extensive gaps in the spreading material mat. Also, the spreading width of the grit mat is not adjusted by the guide device, as is usual with a width adjustment, but preferably only parts of the material flow are shifted or diverted to achieve a different basis weight distribution over the width of the grit mat. This can be done with one or more guiding devices.
  • Dosing surface weight describes the theoretical basis weight of a Material flow, which arises when a metering device controlled spreading material across the width B1 to transfer it into a scattering head and there it is deposited on a forming belt of width B.
  • B> B1 which is not mandatory.
  • the material flow has a depth of length L in the direction of production / direction of movement of the forming belt.
  • the scattered surface weight describes the weight per unit area of the spreading material mat across the width of the forming belt with a width B2. If no changes are made by the spreading head or other devices on the Dosier vomites, that corresponds
  • the device for the targeted storage of the material to be spread on the forming belt is designated. This is found
  • the forming belt directly above the forming belt and has as the last mechanical, in particular moving, machine element contact with the grit before it leaves the scattering head and on the forming belt respectively
  • Tailored longitudinal edges the longitudinal edges in areas with a higher basis weight FH than the Dosier vomthe DFG can be arranged.
  • at least one baffle arranged between the dosing device and the scattering device preferably movable and / or pivotable by means of at least one adjusting device, is held at least partially in the scattering material falling in the direction of movement as a mechanical guide device.
  • the grit is at least partially guided between bunker and scattering head substantially in the direction of fall along a guide flap, wherein the guide flap can also be arranged at an angle to the grit respectively to the material flow adjustable.
  • the guide flap and / or at least one baffle which are arranged over the width of the forming belt and for stabilizing and / or influencing the
  • baffles are particularly preferred in their orientation in the production direction of
  • Formbandes in the length L of the material flow 24 substantially 10% to 80%, preferably between 30% and 50% introduced. That is pre-voted in a meaningful and practical way blockages in the case area and so-called stray holes in the spreading material mat.
  • the system is independent on its own and can be used alone with the features described. At the same time, however, the system is also particularly suitable for carrying out the method
  • FIG. 1 shows a plant according to the invention, consisting of one over a
  • Figure 2 is a representation of possible basis weights across the width of a
  • Bunkers, 3 shows a section in plan view through the guide device according to FIG. 1 with guide plates parallel to the direction of fall for stabilizing a material flow from spreading material, FIG.
  • Figure 4 is a plan view of the area of the molding strand between
  • Widths B, B1, B2, B3 and a trimming device
  • Figure 5 is an illustration of an adjustable basis weight increase on the longitudinal sides over the width B3 of a trimmed
  • FIG. 6 is an illustration of a basis weight distribution to be set relative to the scatter surface weight of the scattering material mat to be scattered according to FIG. 3 across the width B2 under one
  • Figure 7 is a representation in side view of the possible setting of
  • FIG. 9 shows a representation of a part of a guide device with a
  • FIG. 1 an exemplary plant for producing a spreading material mat 7 for pressing in a press 22 is shown on the left side in a schematic view. On the right side there is a side view according to the section line of the left illustration.
  • grit 9 is registered in a bunker 2 and controlled by means of a back stripping device 25 and underlying, endlessly circulating bunker bottom belt 16 a metering device 15 is supplied.
  • the metering device 15 carries the grit over a width B1 with a uniform Dosier vomites DFG (right representation below).
  • the guide device 5 for Stabilization and / or displacement of the material to be spread 9 in the material flow 24 substantially after the metering device 15 and before the onset of
  • Material flow 24 in the scattering head 1 and / or before the first contact of the material flow 24 with a moving machine element eg.
  • a guide flap 18 with optional mechanical or automatic adjusting devices may be arranged.
  • the guide flap 18 is arranged over the entire width of the forming belt 8 and / or the scattering head 1, at least over the width B1 of the scattering material 9 after the metering device 15.
  • one or more dissolving devices 4 can be arranged for the grit 9, preferably, these are arranged between the guide flap 18 and the scattering device 14.
  • the effect for a lateral adjustment of the basis weight along the longitudinal edges 17 of the grit mat 7 can be further enhanced.
  • the guide 6 is not to be understood as a lateral adjustment for the width B2, but only causes the displacement of another part of the material to be spread 9, since the "theoretical depth" L now extends over a longer range and the
  • FIG. 2 shows various basis weight distributions over the widths B1, B2 and B3. These are specifically concerned with the
  • Grit mat 7 In the bottom view is a conventional grit mat according to the prior art, which dosed over a width B1 and by means of lateral sliding walls completely (based on the
  • the fall width 21 (of the material flow 24) corresponds to the width B2 of the spreading material mat
  • a higher hill is achieved at the edge regions for trimming because either the baffles 10, for example, immerse deeper in the material flow and / or on the lateral sliding walls (not shown), the fall width 21 of the material flow is reduced to a width B1 of the spreading material mat 7 and thus more material is scattered at the edge regions.
  • FIG. 3 shows a section in plan view through the guide device 5 according to FIG. 1 with guide plates 10 standing parallel to the direction of fall Guide flap 18 for stabilizing the material flow 24 of a length L and a width B1 of grit 9 during the passage from the bunker 2 in the scattering head 1.
  • This has the background that a stabilization of the falling material to be spread is quite beneficial. Further forms between the only partially in the material flow 24 reaching baffles 10 no risk of clogging as it is the case from the prior art with variable or more over the width arranged closed slide down slides / -.
  • baffles 10 in a kind of waiting position can be positive insofar as there are different solutions to adjust the spread. If, for example, the scattering width is reduced from 3 m to 2.5 or 2 m, the baffles 10 mentioned could not be moved inwards far enough to nevertheless carry out the method according to the invention. For this reason, it is advantageous to arrange a plurality of baffles across the width to be as variable as possible in the width setting. Incidentally, quite a normal width adjustment, lateral baffles over the entire length of the scattering head can be realized. In this case, more material could be displaced in the direction of the middle of the width of the forming belt advantageously with a plurality of baffles, so that the desired profile nevertheless forms.
  • FIG. 4 shows a plan view of the region of the molding strand between the scattering head 1 and the press 22, showing the different shapes Widths such as the width B of the forming belt 8, the width B1 of the
  • FIGS. 5 to 8 show a coherent depiction of a possible production method of a spreading material mat 7 with exemplary parameters. The representation is to be worked out in order of the figures opposite to the material flow of the production, since FIG. 5 the spreading material mat 7 already suitable for pressing and trimmed with the
  • FIG. 6 shows the spreading material mat in the original width B2 after and during the scattering with the longitudinal edges 17, which is a very low one
  • FIG. 7 shows the adjustment of the guide device 5 necessary for influencing the metering surface weight DFG over the width B1 for producing a surface area SFG over the width B2.
  • the baffles 10 are at an angle to the direction of movement 12 of the material flow 24 from grit. 9
  • FIG. 8 shows that the baffles 10 project only partially into the material flow 24 of a depth or length L and provide for a partial displacement of the material to be spread 9 of the material flow 24 over the width B 1.
  • FIG. 9 shows a representation of a part of a guide device 5 with a possible arrangement of a guide plate 10 with associated one
  • Adjusting device 19 for setting different angles of the guide plate 10 in two corresponding schematic views The baffle 10 can be changed by means of the adjusting devices 19 at a distance from the guide flap 18 and moved through the opening 27 and changed accordingly the penetration depth into the material flow 24.
  • the baffles 10 grooves 26th in the guide flap 18 passes through when the baffle 10 about the axis of rotation 28 by means of
  • Actuator 19 is rotated.
  • baffles 10 not only form a vertical angle to a wall or to the guide flap 18, but also for this purpose, preferably have separately adjustable angle. It is further preferred that the openings 27 have means for sealing, so that unnecessary dust or grit can escape from the fall area.
  • a substantially lower basis weight FG should be arranged than the metering surface weight DFG.
  • Longitudinal edges 20 are preferably arranged on the spreading material mat 7 with longitudinal edges 17 by means of a trimming device 23, wherein the longitudinal edges 20 have a higher surface weight than the dosing surface weight DFG and / or the scattering surface weight SFG and / or than the average basis weight of the spreading material mat 7.
  • the preparation of the grit mat 7 is carried out in a claimed system and / or by the preparation of the grit mat according to the method.

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)

Abstract

La présente invention concerne un procédé et une installation pour réaliser une nappe de matière particulaire (7) à partir d'au moins une couche de matière particulaire (9) sur une bande de moulage (8) circulant en continu au moyen d'au moins une tête de dispersion (1), s'ensuivant un rognage des bords longitudinaux (17) de la nappe de matière particulaire au moyen d'un dispositif de rognage (23) au cours de la compression de la nappe de matière particulaire (7) dans une presse (22) pour donner une plaque de matériau. Selon l'invention, la matière particulaire (9) est stockée dans un réservoir (2), dosée au moyen d'un dispositif de dosage (15), déversée sous la forme d'un flux de matière (24) sur une largeur (B1) transversale à la direction de production (11) et sur une longueur (L) dans la direction de production, avec un masse surfacique de dosage (DFG) sensiblement homogène, puis introduite dans la tête de dispersion (1) sensiblement dans la direction de déplacement (12) et dispersée sur la bande de moulage (8) de façon orientée ou non sur une largeur (B2) au moyen d'au moins un dispositif de dispersion (14). L'invention se caractérise en ce qu'une masse surfacique (FG) sensiblement inférieure à la masse surfacique moyenne de la nappe de matière particulaire (7) et/ou à la masse surfacique de dosage (DFG) est dispersée sur les bords longitudinaux (17) de la nappe de matière particulaire (7). La présente invention concerne également une nappe de matière particulaire à comprimer dans une presse. (1401).
EP11710669A 2010-02-05 2011-02-05 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 Withdrawn EP2531332A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010001650 DE102010001650A1 (de) 2010-02-05 2010-02-05 Verfahren und Anlage zur Herstellung einer Streugutmatte aus zumindest einer gestreuten Schicht und eine Streugutmatte zur Verpressung in einer Presse im Zuge der Herstellung von Holzwerkstoffplatten (S)
PCT/EP2011/000541 WO2011095357A1 (fr) 2010-02-05 2011-02-05 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

Publications (1)

Publication Number Publication Date
EP2531332A1 true EP2531332A1 (fr) 2012-12-12

Family

ID=44064729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11710669A Withdrawn EP2531332A1 (fr) 2010-02-05 2011-02-05 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

Country Status (4)

Country Link
EP (1) EP2531332A1 (fr)
CN (1) CN102821920A (fr)
DE (1) DE102010001650A1 (fr)
WO (1) WO2011095357A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115465A1 (de) 2014-10-23 2016-04-28 Dieffenbacher GmbH Maschinen- und Anlagenbau Pressenplatte und Verfahren zur Einstellung der Verbiegung einer Pressenplatte
DE202014105080U1 (de) 2014-10-23 2016-01-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Pressenplatte
DE102015110161B4 (de) * 2015-06-24 2017-08-17 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zur Dosierung und Übergabe von rieselfähigem Material an eine Streuvorrichtung
DE102016109987A1 (de) * 2016-05-31 2017-11-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte und Verfahren zum Betreiben einer solchen Streuanlage

Citations (2)

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DE1019078B (de) * 1954-11-03 1957-11-07 Norddeutsche Holzwerkstoff Ges Vorrichtung zur kontinuierlichen Herstellung von Spanplatten unter Verwendung von vor der Heizpresse angeordneten Besaeumsaegen
EP0292581A1 (fr) * 1987-05-23 1988-11-30 Carl Schenck Ag Méthode pour répandre une nappe de copeaux

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DE1019978B (de) * 1956-02-20 1957-11-21 Erich Reimer Nachf Einrichtung zum Ableiten von Abwaessern in Rueckstaugebieten
DE3420621A1 (de) * 1984-06-02 1985-12-05 Casimir Kast Gmbh & Co Kg, 7562 Gernsbach Verfahren zur herstellung einer faserstoffmatte
US4701294A (en) * 1986-01-13 1987-10-20 Kimberly-Clark Corporation Eductor airforming apparatus
CN2180432Y (zh) * 1993-11-10 1994-10-26 蛇口招商无胶人造板新技术有限公司 干性粉状纤维材料板坯铺装成型装置
DE19916447A1 (de) * 1999-04-12 2000-10-19 Dieffenbacher Schenck Panel Formstation
DE10018218A1 (de) * 1999-04-12 2001-10-25 Dieffenbacher Schenck Panel Formstation
DE10011808C1 (de) * 2000-03-10 2001-12-13 Binos Technologies Gmbh & Co K Verfahren und Vorrichtung zur Herstellung eines Vlieses
DE10304133A1 (de) * 2003-02-03 2004-08-05 Dieffenbacher Gmbh + Co. Kg Vorrichtung zur Orientierung von länglichen Holzspänen
CN2678852Y (zh) * 2003-06-19 2005-02-16 上海人造板机器厂有限公司 机械铺装机真空成型装置
CN2752008Y (zh) * 2004-11-24 2006-01-18 昆明人造板机器厂 中密度纤维板铺装机的布洒细料装置
DE102008030417A1 (de) * 2008-06-26 2009-12-31 Dieffenbacher Gmbh + Co. Kg Verfahren und Anlage zur Herstellung von Werkstoffplatten, wie Span, Schnitzel-, Faser- oder ähnlichen Holzwerkstoffplatten sowie Kunststoffplatten

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Publication number Priority date Publication date Assignee Title
DE1019078B (de) * 1954-11-03 1957-11-07 Norddeutsche Holzwerkstoff Ges Vorrichtung zur kontinuierlichen Herstellung von Spanplatten unter Verwendung von vor der Heizpresse angeordneten Besaeumsaegen
EP0292581A1 (fr) * 1987-05-23 1988-11-30 Carl Schenck Ag Méthode pour répandre une nappe de copeaux

Non-Patent Citations (1)

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Title
See also references of WO2011095357A1 *

Also Published As

Publication number Publication date
DE102010001650A1 (de) 2011-08-11
CN102821920A (zh) 2012-12-12
WO2011095357A1 (fr) 2011-08-11

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