EP3363607A2 - Device and method for carrying away wood chips which emerge laterally from a continuous press - Google Patents

Device and method for carrying away wood chips which emerge laterally from a continuous press Download PDF

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Publication number
EP3363607A2
EP3363607A2 EP17207919.6A EP17207919A EP3363607A2 EP 3363607 A2 EP3363607 A2 EP 3363607A2 EP 17207919 A EP17207919 A EP 17207919A EP 3363607 A2 EP3363607 A2 EP 3363607A2
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EP
European Patent Office
Prior art keywords
wood
press
continuous press
transport
transport device
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
EP17207919.6A
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German (de)
French (fr)
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EP3363607A3 (en
EP3363607B1 (en
Inventor
Horst Weiss
Andreas Osterholt
Martin Kick
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Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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Publication of EP3363607A3 publication Critical patent/EP3363607A3/en
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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
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
    • 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
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G3/00—Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0082—Dust eliminating means; Mould or press ram cleaning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band

Definitions

  • the invention relates to a device for discharging laterally from a continuous press for the production of wood-based panels exiting wood chips or other wood particles, wherein the press in each case has a press nip circulating upper belt and lower belt, which can be pressed by means of at least partially heated pressure plates against a wood fiber material.
  • the invention further relates to a method for discharging laterally from a continuous press for the production of wood-based panels exiting wood chips or other wood particles, the press each having a press nip circulating upper belt and lower belt, which are pressed by means of at least partially heated pressure plates against a wood fiber material.
  • the resulting gas pressure causes that Wood chips or other wood particles are ejected laterally out of the press nip.
  • the object is achieved by the features of claim 1 and in particular in that the side of the press nip at least in an end portion of the press a collecting funnel arrangement for the wood chips or other wood particles is arranged, which forwards them to a mechanical transport device.
  • the transport device is formed by at least one transport screw.
  • the collecting funnel arrangement can have a longer shape in the direction of passage of the press.
  • the chips discharged through the collecting funnel arrangement fall from above into the transport screw opened at the top and are transported away, preferably also parallel to the direction of passage of the press.
  • transport screws are arranged one above the other and partially overlapping in the transport direction.
  • an upper transport screw can transfer the transported chips to a lower transport screw.
  • this arrangement it is possible to use shorter feed screws, so that the drives can be made smaller than when only a single screw conveyor over the entire desired transport length is used.
  • the suction device has no suction effect on the press nip between the upper and lower band, so that the wood fiber material is not removed at the edges.
  • the catcher assembly consists of several funnels in the vicinity of the press nip, the length of which is dimensioned to fit individually or in a group just between frames of the continuous press.
  • the cascaded frames of the continuous press are, as the case may be, laterally beyond the press belts that circulate within the frame. Accordingly, it is advantageous if the individual funnels of the funnel arrangement fit exactly between the frames, because they are thereby brought close to the press nip and can cover the entire outwardly open press nip length.
  • the term "proximity" is here to understand a distance of 5 to 200 mm.
  • the hopper assembly and the transport means form a prefabricated unit.
  • the assembly and disassembly is simplified. With a hall crane, the entire unit is movable and interchangeable for maintenance purposes.
  • the assembly is advantageously movable transversely to the direction of passage of the continuous press.
  • the assembly of a hopper assembly and a transport device for example, on rails in the hall floor be movable. It may, for example, be in a first end position with the funnel opening in the vicinity of the press nip and moved so far away in a second end position of the continuous press that maintenance on the entire system is easier to perform.
  • supply pipes running laterally on the longitudinal side of the continuous press are arranged either below the hall floor or above the press nip.
  • the installation of the collecting funnel arrangement and the transport device is significantly simplified. And in particular they can be moved unhindered as a unit.
  • the object of the invention with the features of claim 9 is achieved and in particular the fact that the side of the press nip is arranged at least in an end portion of the press a catching funnel arrangement for the wood chips or other wood particles, with this catcher arrangement the wood chips or other wood particles are collected be forwarded to a mechanical transport device and transported with the transport device.
  • FIG. 1 and 2 show the same system with a continuous double belt press 2 and the device 1 according to the invention from two different viewing directions, as a cross section and as a side view.
  • Fig. 2 can be seen the end of a continuous double belt press 2 with a circumferential upper belt 3 and a revolving lower belt 4.
  • Upper belt 3 and lower belt 4 form a press nip 5 in which a wood material 6, consisting of at least a large part of wood chips or other wood particles is pressed.
  • the pressing process takes place via upper pressure plates 7 and lower pressure plates 8, of which at least one by hydraulic pressure cylinder 9, for example, with the interposition of rolling elements, not shown against at least one circulating belt 3, 4 are pressed and thus close the press nip 5 and act on the wood material 6 ,
  • the pressure cylinders 9 are attached, for example, to individual frame 13 and are supplied for example from a hydraulic station 10 with pressure oil. Their pressures across the width and length of the continuous press from cylinder to cylinder can vary and be separately adjustable.
  • the lower strand of the upper belt 3 and the upper strand of the lower belt 4 form within the frame 13 the press nip 5 and are guided by guide rollers 14 deflected finally returned above or below the frame 13.
  • the heated pressure plates 6, 7 are usually supplied along along the continuous press feeds 11 and stub lines 12 with a heating medium, such as fuel oil, which passes through introduced into the pressure plate 7, 8 channels and thus the press nip 5 and der Holzwerkstoff 6 additionally heated.
  • a heating medium such as fuel oil
  • the water contained in the wood material 6 evaporates, and the vapor pressure drives wood chips laterally out of the press nip, which without the inventive device 1 can lead to large pollution and hazardous way even to the combustion of the fibers to the supply lines for the heating medium.
  • the device 1 has a collecting funnel arrangement 15 with individual funnels 16 between the frames 13.
  • the funnels forming the funnel may have maintenance flaps 17.
  • the funnels are designed so that the chips blown laterally out of the press nip 6 are fed directly to a mechanical transport device 18, in this embodiment a screw conveyor 19.1, 19.2. In these screw conveyors 19.1, 19.2, the chips are transported to a suction device 20. At the end of the press, a suction device no longer has any harmful influence on the side edges of the wood-based material 6.
  • FIGS. 1 and 2 are two screw conveyors 19.1 and 19.2 arranged one above the other and overlapping.
  • the screw conveyor 19.1 transfers the conveyed material to screw conveyor 19.2, which also at the same time the discharged chips from the last section of the Collecting funnel arrangement 15 receives. By shortening a possible long screw to two shorter, the space for the drives can be reduced.
  • the screw conveyor 19.2 transfers the discharged chips to the suction device 20.
  • the screw conveyors 19.1, 19.2 and the hopper assembly 15 form on each side of the continuous double belt press 2, a common unit 21 which can be moved on rails 22 on the hall floor 23 and thus more or less spaced from the continuous double belt press.
  • a clearance for maintenance work can be created.
  • the assembly 21 is in Fig. 1 drawn on the right side in two different end positions E1 and E2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Abführen von seitlich aus einer kontinuierlichen Presse (2) zur Herstellung von Holzwerkstoffplatten austretenden Holzspänen oder anderen Holzpartikeln, wobei die kontinuierliche Presse (2) jeweils ein unter Pressspaltbildung (5) umlaufendes Oberband (3) und Unterband (4) aufweist, die mit Hilfe zumindest teilweise beheizbarer Druckplatten (7, 8) gegen einen Holzfaserwerkstoff (6) pressbar sind. Gemäß der Erfindung werden die Holzspäne oder anderen Holzpartikel so abgeführt, dass seitlich des Pressspaltes (6) zumindest in einem Endabschnitt der kontinuierlichen Presse (2) eine Auffangtrichteranordnung (15) für die Holzspäne oder andere Holzpartikel angeordnet ist, die diese zu einer mechanischen Transportvorrichtung (18) weiterleitet.

Figure imgaf001
The invention relates to a device and a method for removing laterally from a continuous press (2) for the production of wood-based panels exiting wood chips or other wood particles, wherein the continuous press (2) each under press nip (5) circulating upper belt (3) and lower belt (4), which can be pressed against a wood fiber material (6) by means of at least partially heatable pressure plates (7, 8). According to the invention, the wood chips or other wood particles are removed in such a way that a collecting funnel arrangement (15) for the wood chips or other wood particles is arranged laterally of the press nip (6) at least in one end section of the continuous press (2). 18).
Figure imgaf001

Description

Die Erfindung betrifft eine Vorrichtung zum Abführen von seitlich aus einer kontinuierlichen Presse zur Herstellung von Holzwerkstoffplatten austretenden Holzspänen oder anderen Holzpartikeln, wobei die Presse jeweils ein unter Pressspaltbildung umlaufendes Oberband und Unterband aufweist, die mit Hilfe zumindest teilweise beheizbarer Druckplatten gegen einen Holzfaserwerkstoff pressbar sind.The invention relates to a device for discharging laterally from a continuous press for the production of wood-based panels exiting wood chips or other wood particles, wherein the press in each case has a press nip circulating upper belt and lower belt, which can be pressed by means of at least partially heated pressure plates against a wood fiber material.

Die Erfindung betrifft ferner ein Verfahren zum Abführen von seitlich aus einer kontinuierlichen Presse zur Herstellung von Holzwerkstoffplatten austretenden Holzspänen oder anderen Holzpartikeln, wobei die Presse jeweils ein unter Pressspaltbildung umlaufendes Oberband und Unterband aufweist, die mit Hilfe zumindest teilweise beheizbarer Druckplatten gegen einen Holzfaserwerkstoff gepresst werden.The invention further relates to a method for discharging laterally from a continuous press for the production of wood-based panels exiting wood chips or other wood particles, the press each having a press nip circulating upper belt and lower belt, which are pressed by means of at least partially heated pressure plates against a wood fiber material.

Bei der Herstellung von Holzwerkstoffplatten wird heutzutage in der Regel eine sogenannte Doppelbandpresse verwendet. Zwei umlaufende Stahlbänder laufen über den Pressabschnitt, in dem der Holzfaserwerkstoff kontinuierlich zu einer Holzwerkstoffplatte verpresst wird, unter Druck gegeneinander. Sie werden dabei in der Regel über Rollkörper geführt, die sich wiederum auf zumindest teilweise beheizbaren Druckplatten abstützen, von denen entweder die oberen oder die unteren oder beide über Hydraulikzylinder, die sich am Pressenrahmen abstützen, beaufschlagbar sind.In the production of wood-based panels, a so-called double belt press is usually used today. Two circulating steel belts run against each other over the press section, in which the wood fiber material is pressed continuously to a wood-based panel. They are usually guided by rolling bodies, which in turn are supported on at least partially heated pressure plates, of which either the upper or the lower or both via hydraulic cylinders which are supported on the press frame, can be acted upon.

Durch die hohen Temperaturen und Drücke, insbesondere am Ende der Presse, kommt es zum Verdampfen von der in den Holzfasern eingeschlossenen Feuchtigkeit. Der entstehende Gasdruck bedingt, dass Holzspäne oder anderen Holzpartikel seitlich aus dem Pressspalt herausgeschleudert werden.The high temperatures and pressures, especially at the end of the press, evaporate moisture trapped in the wood fibers. The resulting gas pressure causes that Wood chips or other wood particles are ejected laterally out of the press nip.

Das verursacht nicht nur einen großen Reinigungsaufwand, sondern ist zudem gefährlich, denn die Späne und anderen Holzpartikel können sich an den heißen Versorgungsleitungen für die beheizbaren Druckplatten entzünden.This not only causes a great deal of cleaning, but is also dangerous because the chips and other wood particles can ignite on the hot supply lines for the heated pressure plates.

Aus der DE 101 00 895 A1 ist es beispielsweise bekannt, die austretenden Späne zu befeuchten und direkt abzusaugen. Dies verursacht mit der Installation der Befeuchtungsanlage einen großen Aufwand. Außerdem bewirkt die Absaugung, dass auch Späne und Partikel aus dem Randbereich des Holzfaserwerkstoffs herausgesaugt werden und somit die Ränder der fertigen Holzfaserplatte eine unerwünschte andere Dichte aufweisen als die Mitte. Diese Ränder müssen oft an den fertigen Holzwerkstoffplatten abgeschnitten werden.From the DE 101 00 895 A1 For example, it is known to moisten the emerging chips and to suck directly. This causes a great deal of effort with the installation of the humidification system. In addition, the suction effect that chips and particles are sucked out of the edge region of the wood fiber material and thus have the edges of the finished wood fiber board an undesirable density other than the middle. These edges often have to be cut off on the finished wood-based panels.

Es ist deshalb die Aufgabe der Erfindung, eine Vorrichtung und ein Verfahren zum Abführen von seitlich aus einer kontinuierlichen Presse zur Herstellung von Holzwerkstoffplatten austretenden Holzspänen oder anderen Holzpartikeln zu schaffen, bei denen die beschriebenen Nachteile vermieden werden.It is therefore an object of the invention to provide a device and a method for removing laterally emerging from a continuous press for the production of wood-based panels wood chips or other wood particles, in which the disadvantages described are avoided.

Hinsichtlich der Vorrichtung wird die Aufgabe durch die Merkmale des Anspruchs 1 und insbesondere dadurch gelöst, dass seitlich des Pressspaltes zumindest in einem Endabschnitt der Presse eine Auffangtrichteranordnung für die Holzspäne oder anderen Holzpartikel angeordnet ist, die diese zu einer mechanischen Transportvorrichtung weiterleitet.With regard to the device, the object is achieved by the features of claim 1 and in particular in that the side of the press nip at least in an end portion of the press a collecting funnel arrangement for the wood chips or other wood particles is arranged, which forwards them to a mechanical transport device.

Man erhält dadurch die Möglichkeit, die aus dem Pressspalt austretenden Späne unmittelbar aufzufangen, ohne dass sie das Umfeld der Presse verschmutzen oder sich an den Leitungen der heißen Wärmeträger für die Heizplatten entzünden können. Dabei werden die Späne nicht unmittelbar in eine Saugleitung angesaugt, sondern fallen aufgrund ihrer Schwerkraft und in ihrer Bewegungsfreiheit durch die Seitenwände der Auffangtrichteranordnung begrenzt auf eine Transportvorrichtung, die die Späne abtransportiert.This gives the possibility to catch the chips emerging from the press nip directly, without polluting the environment of the press or on the lines of hot heat transfer for the Can ignite heating plates. The chips are not sucked directly into a suction line, but fall due to their gravity and in their freedom of movement through the side walls of the collecting funnel arrangement limited to a transport device which removes the chips.

Es ist vorteilhaft, wenn die Transportvorrichtung durch wenigstens eine Transportschnecke gebildet ist.It is advantageous if the transport device is formed by at least one transport screw.

Dadurch kann die Auffangtrichteranordnung eine längere Form in Durchlaufrichtung der Presse aufweisen. Die durch die Auffangtrichteranordnung abgeführten Späne fallen von oben in die oben geöffnete Transportschnecke und werden, vorzugsweise ebenfalls parallel zur Durchlaufrichtung der Presse, abtransportiert.As a result, the collecting funnel arrangement can have a longer shape in the direction of passage of the press. The chips discharged through the collecting funnel arrangement fall from above into the transport screw opened at the top and are transported away, preferably also parallel to the direction of passage of the press.

Bevorzugt sind in Transportrichtung mehrere Transportschnecken übereinander und teilweise überlappend angeordnet.Preferably, several transport screws are arranged one above the other and partially overlapping in the transport direction.

Durch die Überlappung kann eine obere Transportschnecke die transportierten Späne an eine untere Transportschnecke übergeben. Mit dieser Anordnung ist es möglich, kürzere Transportschnecken zu verwenden, so dass die Antriebe kleiner dimensioniert werden können, als wenn nur eine einzige Transportschnecke über die gesamte gewünschte Transportlänge eingesetzt wird.Due to the overlap, an upper transport screw can transfer the transported chips to a lower transport screw. With this arrangement, it is possible to use shorter feed screws, so that the drives can be made smaller than when only a single screw conveyor over the entire desired transport length is used.

Es ist von Vorteil, wenn die Transportvorrichtung in einer Absaugeinrichtung endet.It is advantageous if the transport device ends in a suction device.

Die Absaugeinrichtung hat dabei keinen absaugenden Einfluss mehr auf den Pressspalt zwischen Ober- und Unterband, so dass der Holzfaserwerkstoff an den Rändern nicht abgetragen wird.The suction device has no suction effect on the press nip between the upper and lower band, so that the wood fiber material is not removed at the edges.

Bevorzugt besteht die Auffangtrichteranordnung aus mehreren Trichtern in der Nähe des Pressspaltes, deren Länge so dimensioniert ist, dass sie einzeln oder in einer Gruppe genau zwischen Rahmen der kontinuierlichen Presse passen.Preferably, the catcher assembly consists of several funnels in the vicinity of the press nip, the length of which is dimensioned to fit individually or in a group just between frames of the continuous press.

Die hintereinandergeschalteten Rahmen der kontinuierlichen Presse stehen dem Umstand entsprechend seitlich über die Pressbänder hinaus, die innerhalb des Rahmens umlaufen. Demzufolge ist es vorteilhaft, wenn die einzelnen Trichter der Trichteranordnung genau zwischen die Rahmen passen, weil sie dadurch dicht an den Pressspalt gebracht sind und die ganze nach außen offene Pressspaltlänge abdecken können. Unter dem Begriff "Nähe" ist hier ein Abstand von 5 bis 200 mm zu verstehen.The cascaded frames of the continuous press are, as the case may be, laterally beyond the press belts that circulate within the frame. Accordingly, it is advantageous if the individual funnels of the funnel arrangement fit exactly between the frames, because they are thereby brought close to the press nip and can cover the entire outwardly open press nip length. The term "proximity" is here to understand a distance of 5 to 200 mm.

Vorzugsweise bilden die Trichteranordnung und die Transporteinrichtungen eine vorgefertigte Baueinheit.Preferably, the hopper assembly and the transport means form a prefabricated unit.

Die Montage und Demontage wird dadurch vereinfacht. Mit einem Hallenkran ist die gesamte Baueinheit bewegbar und für Wartungszwecke austauschbar.The assembly and disassembly is simplified. With a hall crane, the entire unit is movable and interchangeable for maintenance purposes.

Um sowohl die Presse als auch die Baueinheit noch einfacher warten zu können, ist die Baueinheit mit Vorteil quer zur Durchlaufrichtung der kontinuierlichen Presse verfahrbar.To be able to service both the press and the unit even easier, the assembly is advantageously movable transversely to the direction of passage of the continuous press.

Dadurch wird ein Freiraum geschaffen, in dem die Wartungsarbeiten bequemer durchgeführt werden können. Die Baueinheit aus einer Trichteranordnung und einer Transporteinrichtung kann beispielsweise auf Schienen im Hallenboden verfahrbar sein. Sie kann beispielsweise in einer ersten Endposition mit der Trichteröffnung in der Nähe des Pressspaltes stehen und in einer zweiten Endposition von der kontinuierlichen Presse so weit weggerückt sein, dass Wartungsarbeiten an der gesamten Anlage leichter durchzuführen sind.This creates a space in which the maintenance can be carried out more conveniently. The assembly of a hopper assembly and a transport device, for example, on rails in the hall floor be movable. It may, for example, be in a first end position with the funnel opening in the vicinity of the press nip and moved so far away in a second end position of the continuous press that maintenance on the entire system is easier to perform.

Vorzugsweise sind seitlich an der Längsseite der kontinuierlichen Presse verlaufende Versorgungsrohre entweder unterhalb des Hallenbodens oder oberhalb des Pressspaltes angeordnet.Preferably, supply pipes running laterally on the longitudinal side of the continuous press are arranged either below the hall floor or above the press nip.

Die Installation der Auffangtrichteranordnung und der Transporteinrichtung wird deutlich vereinfacht. Und insbesondere können sie als Baueinheit ungehindert verfahren werden.The installation of the collecting funnel arrangement and the transport device is significantly simplified. And in particular they can be moved unhindered as a unit.

Hinsichtlich des Verfahrensanspruchs wird die erfindungsgemäße Aufgabe mit der Merkmalen des Anspruchs 9 gelöst und insbesondere dadurch, dass seitlich des Pressspaltes zumindest in einem Endabschnitt der Presse eine Auffangtrichteranordnung für die Holzspäne oder anderen Holzpartikel angeordnet wird, mit dieser Auffangtrichteranordnung die Holzspäne oder anderen Holzpartikel aufgefangen werden, zu einer mechanischen Transportvorrichtung weiterleitet werden und mit der Transportvorrichtung befördert werden.With regard to the method claim, the object of the invention with the features of claim 9 is achieved and in particular the fact that the side of the press nip is arranged at least in an end portion of the press a catching funnel arrangement for the wood chips or other wood particles, with this catcher arrangement the wood chips or other wood particles are collected be forwarded to a mechanical transport device and transported with the transport device.

Die abhängigen Verfahrensansprüche entsprechen in ihren Vorzügen der Beschreibung der Vorrichtung.The dependent method claims correspond in their advantages of the description of the device.

Die Erfindung wird im Folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert. In dieser zeigt

  • Figur 1 eine Querschnitts-Darstellung einer kontinuierlichen Doppelbandpresse mit einer erfindungsgemäßen Vorrichtung,
  • Figur 2 eine Seitenansicht eines Endes einer kontinuierlichen Doppelbandpresse mit der erfindungsgemäßen Vorrichtung
The invention will be explained in more detail below with reference to an embodiment with reference to the drawings. In this shows
  • FIG. 1 a cross-sectional view of a continuous double belt press with a device according to the invention,
  • FIG. 2 a side view of one end of a continuous double belt press with the device according to the invention

Figur 1 und 2 zeigen die gleiche Anlage mit einer kontinuierlichen Doppelbandpresse 2 und der erfindungsgemäßen Vorrichtung 1 aus zwei unterschiedlichen Blickrichtungen, als Querschnitt und als Seitenansicht. FIG. 1 and 2 show the same system with a continuous double belt press 2 and the device 1 according to the invention from two different viewing directions, as a cross section and as a side view.

In Fig. 2 erkennt man das Ende einer Kontinuierlichen Doppelbandpresse 2 mit einem umlaufenden Oberband 3 und einem umlaufenden Unterband 4. Oberband 3 und Unterband 4 bilden einen Pressspalt 5 in dem ein Holzwerkstoff 6, bestehend zumindest zu einem großen Teil aus Holzspänen oder anderen Holzpartikeln verpresst wird.In Fig. 2 can be seen the end of a continuous double belt press 2 with a circumferential upper belt 3 and a revolving lower belt 4. Upper belt 3 and lower belt 4 form a press nip 5 in which a wood material 6, consisting of at least a large part of wood chips or other wood particles is pressed.

Der Pressvorgang erfolgt über obere Druckplatten 7 und untere Druckplatten 8, von denen zumindest eine durch hydraulische Andrückzylinder 9 zum Beispiel unter Zwischenschaltung von nicht dargestellten Rollkörpern gegen wenigstens ein umlaufendes Band 3, 4 gepresst werden und damit den Pressspalt 5 schließen und auf den Holzwerkstoff 6 wirken. Die Andrückzylinder 9 sind beispielsweise an einzelnen Rahmen 13 befestigt und werden beispielsweise aus einer Hydraulikstation 10 mit Drucköl versorgt. Dabei können ihre Drücke über die Breite und Länge der kontinuierlichen Presse von Zylinder zu Zylinder variieren und separat einstellbar sein.The pressing process takes place via upper pressure plates 7 and lower pressure plates 8, of which at least one by hydraulic pressure cylinder 9, for example, with the interposition of rolling elements, not shown against at least one circulating belt 3, 4 are pressed and thus close the press nip 5 and act on the wood material 6 , The pressure cylinders 9 are attached, for example, to individual frame 13 and are supplied for example from a hydraulic station 10 with pressure oil. Their pressures across the width and length of the continuous press from cylinder to cylinder can vary and be separately adjustable.

Das untere Trum des Oberbandes 3 und das obere Trum des Unterbandes 4 bilden innerhalb der Rahmen 13 den Pressspalt 5 und werden über Leitwalzen 14 umgelenkt schließlich oberhalb bzw. unterhalb der Rahmen 13 zurückgeführt.The lower strand of the upper belt 3 and the upper strand of the lower belt 4 form within the frame 13 the press nip 5 and are guided by guide rollers 14 deflected finally returned above or below the frame 13.

Die beheizbaren Druckplatten 6, 7 werden in der Regel über längs der kontinuierlichen Presse verlaufende Zuleitungen 11 und Stichleitungen 12 mit einem Heizmedium, beispielsweise Heizöl, versorgt, das durch in die Druckplatte 7, 8 eingebrachte Kanäle läuft und somit den Pressspalt 5 bzw. des Holzwerkstoff 6 zusätzlich beheizt. Das im Holzwerkstoff 6 befindliche Wasser verdampft, und der Dampfdruck treibt Holzspäne seitlich aus dem Pressspalt heraus, was ohne die erfindungsgemäße Vorrichtung 1 zu großer Verschmutzung und in gefährdender Weise sogar zur Verbrennung der Fasern an den Zuleitungen für das Heizmedium führen kann.The heated pressure plates 6, 7 are usually supplied along along the continuous press feeds 11 and stub lines 12 with a heating medium, such as fuel oil, which passes through introduced into the pressure plate 7, 8 channels and thus the press nip 5 and der Holzwerkstoff 6 additionally heated. The water contained in the wood material 6 evaporates, and the vapor pressure drives wood chips laterally out of the press nip, which without the inventive device 1 can lead to large pollution and hazardous way even to the combustion of the fibers to the supply lines for the heating medium.

Aus diesem Grund weist die Vorrichtung 1 eine Auffangtrichteranordnung 15 mit einzelnen Trichtern 16 zwischen den Rahmen 13 auf. Die den Trichter bildenden Bleche können Wartungsklappen 17 aufweisen.For this reason, the device 1 has a collecting funnel arrangement 15 with individual funnels 16 between the frames 13. The funnels forming the funnel may have maintenance flaps 17.

Die Trichter sind so gestaltet, dass die seitlich aus dem Pressspalt 6 ausgeblasenen Späne direkt zu einer mechanischen Transportvorrichtung 18, in diesem Ausführungsbeispiel einer Förderschnecke 19.1, 19.2, zugeleitet werden. In diesen Förderschnecken 19.1, 19.2 werden die Späne zu einer Absaugeinrichtung 20 transportiert. Am Ende der Presse hat eine Absaugeinrichtung keinen schädlichen Einfluss mehr auf die Seitenkanten des Holzwerkstoffs 6.The funnels are designed so that the chips blown laterally out of the press nip 6 are fed directly to a mechanical transport device 18, in this embodiment a screw conveyor 19.1, 19.2. In these screw conveyors 19.1, 19.2, the chips are transported to a suction device 20. At the end of the press, a suction device no longer has any harmful influence on the side edges of the wood-based material 6.

In dem Ausführungsbeispiel der Figuren 1 und 2 sind zwei Förderschnecken 19.1 und 19.2 übereinander und überlappend angeordnet. Die Förderschnecke 19.1 übergibt das geförderte Material an Förderschnecke 19.2, die auch gleichzeitig die abgeführten Späne vom letzten Abschnitt der Auffangtrichteranordnung 15 aufnimmt. Durch die Verkürzung einer möglichen langen Schnecke auf zwei kürzere kann der Bauraum für die Antriebe verkleinert werden. Die Förderschnecke 19.2 übergibt die abgeführten Späne an die Absaugeinrichtung 20.In the embodiment of FIGS. 1 and 2 are two screw conveyors 19.1 and 19.2 arranged one above the other and overlapping. The screw conveyor 19.1 transfers the conveyed material to screw conveyor 19.2, which also at the same time the discharged chips from the last section of the Collecting funnel arrangement 15 receives. By shortening a possible long screw to two shorter, the space for the drives can be reduced. The screw conveyor 19.2 transfers the discharged chips to the suction device 20.

Die Förderschnecken 19.1, 19.2 und die Trichteranordnung 15 bilden auf jeder Seite der kontinuierlichen Doppelbandpresse 2 eine gemeinsame Baueinheit 21, die auf Schienen 22 über den Hallenboden 23 verfahrbar und somit von der kontinuierlichen Doppelbandpresse mehr oder weniger beabstandet werden kann. Damit kann beispielsweise ein Freiraum für Wartungsarbeiten geschaffen werden. Aus diesem Grund ist die Baueinheit 21 in Fig. 1 auf der rechten Seite in zwei unterschiedlichen Endpositionen E1 und E2 gezeichnet.The screw conveyors 19.1, 19.2 and the hopper assembly 15 form on each side of the continuous double belt press 2, a common unit 21 which can be moved on rails 22 on the hall floor 23 and thus more or less spaced from the continuous double belt press. Thus, for example, a clearance for maintenance work can be created. For this reason, the assembly 21 is in Fig. 1 drawn on the right side in two different end positions E1 and E2.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtung zum Abführen von Holzspänen oder anderen HolzpartikelnDevice for removing wood chips or other wood particles
22
Kontinuierliche PresseContinuous press
33
Oberbandtop belt
44
Unterbandlow band
55
Pressspaltpress nip
66
HolzwerkstoffEngineered wood
77
Obere DruckplatteUpper pressure plate
88th
Untere DruckplatteLower pressure plate
99
Andrückzylinderpressure cylinder
1010
HydraulikstationHydraulikstation
1111
Heizmedium-ZuleitungHeating medium supply line
1212
Heizmedium-StichleitungHeating medium-stub
1313
Rahmenframe
1414
Leitwalze, UmlenkwalzeGuide roller, guide roller
1515
AuffangtrichteranordnungCollecting funnel arrangement
1616
Trichterfunnel
1717
Wartungsklappemaintenance flap
1818
Transportvorrichtungtransport device
19.1, 19.219.1, 19.2
FörderschneckeAuger
2020
Absaugeinrichtungsuction
2121
Baueinheitunit
2222
Schienerail
2323
Hallenbodenshop floor
FF
Förderrichtung des Holzwerkstoffs und Transportrichtung in der TransportvorrichtungConveying direction of the wood material and transport direction in the transport device
E1, E2E1, E2
Endpositionen der verfahrbaren EinheitEnd positions of the movable unit

Claims (12)

Vorrichtung zum Abführen von seitlich aus einer kontinuierlichen Presse (2) zur Herstellung von Holzwerkstoffplatten austretenden Holzspänen oder anderen Holzpartikeln, wobei die kontinuierliche Presse (2) jeweils ein unter Pressspaltbildung (5) umlaufendes Oberband (3) und Unterband (4) aufweist, die mit Hilfe zumindest teilweise beheizbarer Druckplatten (7, 8) gegen einen Holzfaserwerkstoff (6) pressbar sind, dadurch gekennzeichnet, dass seitlich des Pressspaltes (6) zumindest in einem Endabschnitt der kontinuierlichen Presse (2) eine Auffangtrichteranordnung (15) für die Holzspäne oder andere Holzpartikel angeordnet ist, die diese zu einer mechanischen Transportvorrichtung (18) weiterleitet.Apparatus for removing wood chips or other wood particles emerging laterally from a continuous press (2) for the production of wood-based panels, the continuous press (2) each having a top band (3) and a bottom band (4) circulating under press nip formation (5) Help at least partially heatable printing plates (7, 8) against a wood fiber material (6) are pressed, characterized in that the side of the press nip (6) at least in one end portion of the continuous press (2) a collecting funnel arrangement (15) for the wood chips or other wood particles is arranged, which forwards these to a mechanical transport device (18). Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die Transportvorrichtung (18) durch wenigstens eine Transportschnecke (19.1, 19.2) gebildet ist.Apparatus according to claim 1, characterized in that the transport device (18) by at least one transport screw (19.1, 19.2) is formed. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, dass in Transportrichtung (F) mehrere Transportschnecken (19.1, 19.2) übereinander und teilweise überlappend angeordnet sind.Apparatus according to claim 2, characterized in that in the transport direction (F) a plurality of transport screws (19.1, 19.2) are arranged one above the other and partially overlapping. Vorrichtung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Transportvorrichtung (18) in einer Absaugeinrichtung (20) endet.Device according to one of claims 1 to 3, characterized in that the transport device (18) ends in a suction device (20). Vorrichtung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Auffangtrichteranordnung (15) aus mehreren Trichtern (16) in der Nähe des Pressspaltes (5) besteht, deren Länge so dimensioniert ist, dass sie einzeln oder in einer Gruppe genau zwischen Rahmen (13) der kontinuierlichen Presse (2) passen.Device according to any one of claims 1 to 4, characterized in that the catching funnel arrangement (15) consists of a plurality of funnels (16) in the vicinity of the press nip (5), the length of which is dimensioned so as to be arranged individually or in a group between frames (13) of the continuous press (2). Vorrichtung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Trichteranordnung (15) und die Transporteinrichtungen (18) eine vorgefertigte Baueinheit (21) bilden.Device according to one of claims 1 to 4, characterized in that the hopper assembly (15) and the transport means (18) form a prefabricated unit (21). Vorrichtung gemäß Anspruch 6, dadurch gekennzeichnet, dass die Baueinheit (21) quer zur Förderrichtung (F) in der kontinuierlichen Presse (2) verfahrbar ist.Apparatus according to claim 6, characterized in that the structural unit (21) transversely to the conveying direction (F) in the continuous press (2) is movable. Vorrichtung gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass seitlich an der Längsseite der kontinuierlichen Presse (2) verlaufende Zuleitungen (11) entweder unterhalb des Hallenbodens (23) oder oberhalb des Pressspaltes (5) angeordnet sind.Device according to one of claims 1 to 7, characterized in that laterally on the longitudinal side of the continuous press (2) extending supply lines (11) either below the hall floor (23) or above the press nip (5) are arranged. Verfahren zum Abführen von seitlich aus einer kontinuierlichen Presse (2) zur Herstellung von Holzwerkstoffplatten austretenden Holzspänen oder anderen Holzpartikeln, wobei die kontinuierliche Presse (2) jeweils ein unter Pressspaltbildung (5) umlaufendes Oberband (3) und Unterband (4) aufweist, die mit Hilfe zumindest teilweise beheizbarer Druckplatten (7, 8) gegen einen Holzfaserwerkstoff (6) gepresst werden, dadurch gekennzeichnet, dass seitlich des Pressspaltes (5) zumindest in einem Endabschnitt der kontinuierlichen Presse (2) eine Auffangtrichteranordnung (15) für die Holzspäne oder anderen Holzpartikel angeordnet wird, mit dieser Auffangtrichteranordnung (15) die Holzspäne oder anderen Holzpartikel aufgefangen werden, zu einer mechanischen Transportvorrichtung (18) weiterleitet werden und mit der Transportvorrichtung (18) befördert werden.Method for removing laterally from a continuous press (2) for the production of wood-based panels leaking wood chips or other wood particles, wherein the continuous press (2) each under press nip (5) circumferential upper belt (3) and lower belt (4) which with Help at least partially heatable printing plates (7, 8) against a wood fiber material (6) are pressed, characterized in that the side of the press nip (5) at least in one end portion of the continuous press (2) a collecting funnel arrangement (15) for the wood chips or other wood particles is arranged with this catching funnel arrangement (15) the wood chips or other wood particles are collected, forwarded to a mechanical transport device (18) and transported with the transport device (18). Verfahren gemäß Anspruch 9, dass als Transportvorrichtung (18) Förderschnecken (19.1, 19.2) verwendet werden.Method according to claim 9, that feed screws (19.1, 19.2) are used as transport device (18). Verfahren gemäß Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Transportvorrichtung (18) an einer Absaugeinrichtung (20) endet.A method according to claim 9 or 10, characterized in that the transport device (18) ends at a suction device (20). Verfahren gemäß einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass für Wartungszwecke die Trichteranordnung (15) und die Transportvorrichtung (18) als gemeinsame Baueinheit (21) verfahren werden.Method according to one of claims 9 to 11, characterized in that for maintenance purposes, the hopper assembly (15) and the transport device (18) are moved as a common structural unit (21).
EP17207919.6A 2017-01-18 2017-12-18 Device and method for carrying away wood chips which emerge laterally from a continuous press Active EP3363607B1 (en)

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DE102017000391.2A DE102017000391A1 (en) 2017-01-18 2017-01-18 Apparatus and method for removing wood chips emerging laterally from a continuous press

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WO2019115821A1 (en) * 2017-12-15 2019-06-20 Dieffenbacher GmbH Maschinen- und Anlagenbau Disposal of unpressed material in a press for continuous production of material boards
CN112518926A (en) * 2020-11-30 2021-03-19 浙江荣涛家具有限公司 Garbage collection equipment for wood working
EP4378597A1 (en) * 2022-11-30 2024-06-05 Sunds Fibertech AB Apparatus and method for scattering material onto an endless belt, plant for the produktion of boards and stage of expansion for such applications

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CN112518926A (en) * 2020-11-30 2021-03-19 浙江荣涛家具有限公司 Garbage collection equipment for wood working
EP4378597A1 (en) * 2022-11-30 2024-06-05 Sunds Fibertech AB Apparatus and method for scattering material onto an endless belt, plant for the produktion of boards and stage of expansion for such applications

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EP3363607A3 (en) 2018-10-10
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CN108327036B (en) 2021-08-20
EP3363607B1 (en) 2020-02-19

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