EP1335818A1 - Intermediate product, method and device for producing wood chips - Google Patents

Intermediate product, method and device for producing wood chips

Info

Publication number
EP1335818A1
EP1335818A1 EP01997378A EP01997378A EP1335818A1 EP 1335818 A1 EP1335818 A1 EP 1335818A1 EP 01997378 A EP01997378 A EP 01997378A EP 01997378 A EP01997378 A EP 01997378A EP 1335818 A1 EP1335818 A1 EP 1335818A1
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EP
European Patent Office
Prior art keywords
preliminary product
intermediate product
rotor
product
preliminary
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
EP01997378A
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German (de)
French (fr)
Other versions
EP1335818B1 (en
Inventor
Robert Loth
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.)
B Maier Zerkleinerungstechnik GmbH
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B Maier Zerkleinerungstechnik GmbH
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Publication of EP1335818A1 publication Critical patent/EP1335818A1/en
Application granted granted Critical
Publication of EP1335818B1 publication Critical patent/EP1335818B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like

Definitions

  • the invention relates to a method and an apparatus for producing chips from wood. There are basically two systems that are fundamentally different from one another and that accordingly produce different products.
  • the first system concerns so-called direct chippers.
  • Non-cut logs are fed into a gutter.
  • a knife ring is arranged parallel to the steering axis of the wood
  • Knips are stocked.
  • the knives run with their cutting edges parallel to the knife ring.
  • the knife ring can be moved in such a way that it can be immersed in the mass of the logs and machined. See for example DE 29 47 199 C1.
  • Another type of direct chipper which belongs to the first system mentioned, has a rotatably mounted disc.
  • the disc carries a chipper knife on one side.
  • the logs or tree trunks are fed to this work surface parallel to the fiber. Since the peripheral speeds of individual surface elements of the
  • the machines mentioned which belong to the first system, are used primarily to produce so-called OS chips ("oriented strand").
  • the fibers of these chips run in the longitudinal direction of the chip.
  • the chip is extremely thin. It is used to manufacture panels of the same name, so-called OSB panels. These are considered high quality. They have great strength, so that they can be used as construction elements, for example for prefabricated houses.
  • the second system mentioned uses so-called knife ring chippers. This comprises a ring or ring of knives, the cutting edges of which run at least substantially parallel to the ring axis.
  • the knife ring encloses a work space in which the wood chips are introduced through a filling shaft in a radially inner area.
  • a rotor throws the wood chips radially outwards against the inner surface of the knife ring and thus against the cutting edges of the knives, where cutting takes place.
  • the preliminary product fed to the chipper consists of much smaller ones
  • Particles namely wood chips that were previously generated in a chopping process. In general terms, they are at least approximately the size of a matchbox.
  • the chips that can be produced by means of a knife ring chipper differ fundamentally from the OS chips, generated by the first-mentioned category of machines that operate according to the first-mentioned system. They are essentially pen-shaped and are reminiscent of thin matches. These chips can only be processed into chipboard. However, chipboard has only a limited strength, in particular no particular flexural strength. They can therefore not be used as construction elements, but are used in the furniture industry.
  • Direct chippers for the production of OS chips - and the second-mentioned system with the upstream stage for the production of chips and the end result of the chips for chipboard can be summarized as follows:
  • Direct chippers generally require Frischhoiz, i.e. logs of one meter, for example. They are able to hold the high-quality OS To produce chips, however, they have relatively large dimensions due to the large dimensions of the preliminary product. Accordingly, they are extremely expensive to purchase. The investment costs are between one and three million DM. Accordingly, they are not very flexible to use.
  • Machiners are smaller, more flexible and cheaper to buy. However, they are not able to produce OSB chips, only the low-quality match-like chips for chipboard.
  • the invention has for its object to provide a method or a device with which both so-called fresh wood and recycled wood can be used as a preliminary product, which has significantly smaller construction volumes than the known direct chipper, which therefore requires lower investment costs and is flexible in use, and that is basically also suitable for producing OSB chips.
  • the inventor has thus freed himself from a widespread prejudice. He used the basic features of the knife ring chipper, but fundamentally changed the boundary conditions. This applies in particular to the selection of the dimensions of the preliminary product. This has a larger dimension in a first extension than in a perpendicular extension, so that it could be called rod-shaped.
  • the method and device according to the invention can produce high-quality OSB chips in principle, but at the same time also
  • Fig. 1 shows a chipper in a front view, i.e. in a view of the side on which the housing cover with the insert for the preliminary product is located.
  • FIG. 2 shows an axial section of the chipper according to FIG. 1 on an enlarged scale.
  • FIG. 3 shows an enlarged view of a detail from FIG. 2, namely a knife pack.
  • the chipper comprises a rotor 1 which is driven by a shaft 2.
  • the rotor 1 contains a ring of axially parallel vanes 3.
  • a knife basket with knives 4 likewise arranged axially parallel surrounds the rotor 1.
  • the rotor 1 and knife basket are in turn arranged in a housing 5 and together enclosed by the latter. Housing 5 has an inlet 6 for the wood chips to be fed and an outlet for the finished chip.
  • FIG. 2 illustrates a rod-shaped preliminary product 20 in two places. In the present case, this is ordered as a regular rectangular block. Instead, this preliminary product could also be designed differently, for example, have irregular boundary surfaces. It is only essential that this preliminary product 20 is more or less rod-shaped, ie has a longitudinal extension that is greater than the transverse extensions in planes that run perpendicular to it.
  • the preliminary product 20 is fed to the shaft-shaped inlet 6 - see arrow. It then enters the interior enclosed by the rotor 1.
  • the preliminary product 20 - automatically or by means of a corresponding orientation device - lies in such a way that it runs predominantly to the longitudinal axis of the rotor shaft 2, and thus more or less parallel to the knives 4.
  • the preliminary product has a considerable size, in particular a considerable length, compared with the chips that are supplied to the knife ring cutters that have been used up to now.
  • FIGS. 3 and 4 two knife packs are shown in a section perpendicular to the axis. These two knife sets are part of the knife ring of the machine.
  • Each knife pack is constructed as follows: A support block 10 carries a cutting knife 11 which is fastened to the support block 10 by means of a clamping plate 12 and a screw 13.
  • Each support block 10 has a wear surface 10.1. It is crucial that this wear surface 10.1 facing the machine axis is approximately flat and therefore not concentric as in the prior art.
  • the wear surface 10.1 in the case of the figure is formed from a wear plate 10.2, which in turn is attached to the rest of the support block 10.
  • the wear surface 10.1 is formed from a wear layer that was produced by applying a wear layer, preferably by cladding or spraying and then grinding.
  • a stick knife 14 is provided which is fastened on the side of the support block 10 opposite the cutting knife 11 and which cooperates with the cutting knife of the neighboring knife package.
  • the embodiment according to FIG. 4 is a stickless embodiment.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention relates to an intermediate product, a method for processing the intermediate product and a wood chipping device for processing the intermediate product. The intermediate product is substantially rod shaped and is sized in a range that includes between one and two times as oriented strand (OS) chips. The intermediate product is fed to a wood chipping device. The wood chipping device has a number of blades. The number of blades each have a number of cutting edges that run parallel to a blade ring axis, and which enclose a working chamber. The intermediate product is rotated about the blade ring axis and is aligned in such a way that it lies substantially parallel to the blade ring axis and is pressed by centrifugal force against the cutting edges.

Description

VORPRODUKT , VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN VON SPÄNEN AUS HOLZPRE-PRODUCT, METHOD AND DEVICE FOR PRODUCING CHIPS FROM WOOD
Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Erzeugen von Spänen aus Holz. Dabei gibt es grundsätzlich zwei Systeme, die voneinander grundverschieden sind und die auch demgemäß unterschiedliche Produkte erzeugen.The invention relates to a method and an apparatus for producing chips from wood. There are basically two systems that are fundamentally different from one another and that accordingly produce different products.
Das erste System betrifft sogenannte Direktzerspaner. Dabei wird nicht- abgelängtes Rundholz einer Rinne zugeführt. Parallel zur Lenkachse des Holzes ist eine Messerring angeordnet, die auf ihrem Umfang mit einerThe first system concerns so-called direct chippers. Non-cut logs are fed into a gutter. A knife ring is arranged parallel to the steering axis of the wood
Vielzahl von Messern bestückt ist. Die Messer verlaufen mit ihren Schneiden parallel zur Messerring. Die Messerring ist derart verfahrbar, daß sie in die Masse der Rundhölzer eintauchen und diese zerspanen kann. Siehe beispielsweise DE 29 47 199 C1.Variety of knives is stocked. The knives run with their cutting edges parallel to the knife ring. The knife ring can be moved in such a way that it can be immersed in the mass of the logs and machined. See for example DE 29 47 199 C1.
Eine weitere Bauart von Direktzerspanern, die dem genannten ersten System angehört, weist eine drehbar gelagerte Scheibe auf. Die Scheibe trägt auf ihrer einen Seitenfläche Zerspanermesser. Die Rundhölzer oder Baumstämme werden dieser Arbeitsfläche parallel zur Faser zugeführt. Da die Umfangsgeschwindigkeiten einzelner Flächenelemente derAnother type of direct chipper, which belongs to the first system mentioned, has a rotatably mounted disc. The disc carries a chipper knife on one side. The logs or tree trunks are fed to this work surface parallel to the fiber. Since the peripheral speeds of individual surface elements of the
Arbeitsfläche unterschiedlich groß sind, je nachdem, ob das Flächenelement radial innen oder radial außen liegt, ist auch das Zerspanungsergebnis unterschiedlich, was die Qualität beeinträchtigt.Work surface are different sizes, depending on whether the surface element is located radially inside or radially outside, the cutting result is also different, which affects the quality.
Die genannten Maschinen, die dem ersten System angehören, dienen vor allem zum Erzeugen von sogenannten OS-Spänen ("Oriented Strang"). Dabei verlaufen die Fasern dieser Späne in Längsrichtung des Spanes. Der Span ist außerordentlich dünn. Er dient zum Herstellen gleichnamiger Platten, sogenannter OSB-Platten. Diese gelten als hochwertig. Sie haben eine große Festigkeit, so daß sie sich als Konstruktionselemente verwenden lassen, beispielsweise für den Fertighausbau. Das genannte zweite System verwendet sogenannte Messerringzerspaner. Dieser umfaßt einen Ring oder Kranz aus Messern, deren Schneiden wenigstens im wesentlichen parallel zur Ringachse verlaufen. Der Messerring umschließt einen Arbeitsraum, in dem die Hackschnitzel in einem radial inneren Bereich durch einen Einfüllschacht eingeführt werden.The machines mentioned, which belong to the first system, are used primarily to produce so-called OS chips ("oriented strand"). The fibers of these chips run in the longitudinal direction of the chip. The chip is extremely thin. It is used to manufacture panels of the same name, so-called OSB panels. These are considered high quality. They have great strength, so that they can be used as construction elements, for example for prefabricated houses. The second system mentioned uses so-called knife ring chippers. This comprises a ring or ring of knives, the cutting edges of which run at least substantially parallel to the ring axis. The knife ring encloses a work space in which the wood chips are introduced through a filling shaft in a radially inner area.
Ein Rotor schleudert die Hackschnitzel radial nach außen gegen die Innenfläche des Messerringes und damit gegen die Schneiden der Messer, wo eine Zerspanung erfolgt.A rotor throws the wood chips radially outwards against the inner surface of the knife ring and thus against the cutting edges of the knives, where cutting takes place.
Das den Zerspaner zugeführte Vorprodukt besteht aus wesentlich kleinerenThe preliminary product fed to the chipper consists of much smaller ones
Partikeln, nämlich Hackschnitzeln, die zuvor in einem Hackprozess erzeugt wurden. Sie haben ganz pauschal ausgedrückt wenigstens annähernd die Größe einer Streichholzschachtel.Particles, namely wood chips that were previously generated in a chopping process. In general terms, they are at least approximately the size of a matchbox.
Die mittels eines Messerringzerspaners herstellbaren Späne unterscheiden sich ganz grundlegend von den OS-Spänen, erzeugt durch die erstgenannte Kategorie von Maschinen, die nach dem erstgenannten System arbeiten. Sie sind im wesentlichen stiftförmig und erinnern an dünne Streichhölzer. Diese Späne lassen sich nur zu Spanplatten verarbeiten. Spanplatten haben jedoch nur eine begrenzte Festigkeit, insbesondere keine besondere Biegefestigkeit. Sie lassen sich somit nicht als Konstruktionselemente verwenden, sondern finden in der Möbelindustrie Anwendung.The chips that can be produced by means of a knife ring chipper differ fundamentally from the OS chips, generated by the first-mentioned category of machines that operate according to the first-mentioned system. They are essentially pen-shaped and are reminiscent of thin matches. These chips can only be processed into chipboard. However, chipboard has only a limited strength, in particular no particular flexural strength. They can therefore not be used as construction elements, but are used in the furniture industry.
Die Vor- und Nachteile von Maschinen des erstgenannten Systems -The advantages and disadvantages of machines of the former system -
Direktzerspaner zum Erzeugen von OS-Spänen -, und des zweitgenannten Systemes mit der vorgeschalteten Stufe zum Erzeugen von Hackschnitzeln und dem Endergebnis der Späne für Spanplatten lassen sich wie folgt zusammenfassen: Direktzerspaner verlangen im allgemeinen Frischhoiz, d.h. Baumstämme beispielsweise von einem Meter. Sie vermögen zwar die hochwertigen OS- Späne zu erzeugen, jedoch haben sie verhältnismäßig große Abmessungen aufgrund der großen Abmessungen des Vorproduktes. Demgemäß sind sie außerordentlich teuer in der Anschaffung. Die Investitionskosten liegen zwischen einer und drei Millionen DM. Demgemäß sind sie auch relativ wenig flexibel im Einsatz.Direct chippers for the production of OS chips - and the second-mentioned system with the upstream stage for the production of chips and the end result of the chips for chipboard can be summarized as follows: Direct chippers generally require Frischhoiz, i.e. logs of one meter, for example. They are able to hold the high-quality OS To produce chips, however, they have relatively large dimensions due to the large dimensions of the preliminary product. Accordingly, they are extremely expensive to purchase. The investment costs are between one and three million DM. Accordingly, they are not very flexible to use.
Zerspaner hingegen sind kleiner, flexibler und kostengünstiger in der Anschaffung. Sie vermögen jedoch nicht OSB-Späne zu erzeugen, sondern lediglich die geringerwertigen streichholzartigen Späne für Spanplatten.Machiners, on the other hand, are smaller, more flexible and cheaper to buy. However, they are not able to produce OSB chips, only the low-quality match-like chips for chipboard.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren oder eine Vorrichtung anzugeben, womit sich sowohl sogenanntes Frischholz als auch Recycling-Holz als Vorsprodukt verwenden läßt, das wesentlich geringere Bauvolumina als die bekannten Direktzerspaner aufweist, das daher geringere Investitionskosten verlangt und flexibel im Einsatz ist, und das grundsätzlich auch dazu geeignet ist, OSB-Späne zu erzeugen.The invention has for its object to provide a method or a device with which both so-called fresh wood and recycled wood can be used as a preliminary product, which has significantly smaller construction volumes than the known direct chipper, which therefore requires lower investment costs and is flexible in use, and that is basically also suitable for producing OSB chips.
Diese Aufgabe wird durch die selbständigen Ansprüche gelöst.This task is solved by the independent claims.
Der Erfinder hat sich somit von einem verbreiteten Vorurteil gelöst. Er hat auf die Grundmerkmale des Messerringzerspaners zurückgegriffen, jedoch die Randbedingungen fundamental verändert. Dies betrifft insbesondere die Auswahl der Abmessungen des Vorproduktes. Dieses hat in einer ersten Erstreckung eine größere Abmessung als in einer hierzu senkrechten Erstreckung, so daß es als stabförmig bezeichnet werden könnte.The inventor has thus freed himself from a widespread prejudice. He used the basic features of the knife ring chipper, but fundamentally changed the boundary conditions. This applies in particular to the selection of the dimensions of the preliminary product. This has a larger dimension in a first extension than in a perpendicular extension, so that it could be called rod-shaped.
Mit einem erfindungsgemäßen Verfahren und einer entsprechenden Vorrichtung lassen sich nunmehr höchst unterschiedliche Vorprodukte verwenden, nämlich sowohl Frischholz ausgezeichneter Qualität, Frischholz minder guter Qualität wie Krüppelholz und Äste sowie Recycling-Holz. Dabei kommen als Recycling-Holz beispielsweise die sehr zahlreich anfallenden Verpackungshölzer in Betracht.With a method according to the invention and a corresponding device, very different preliminary products can now be used, namely both fresh wood of excellent quality, fresh wood of poor quality such as crippled wood and branches, and recycled wood. Here, for example, the very large number of packaging woods that come into consideration are recycled wood.
Verfahren und Vorrichtung gemäß der Erfindung können - wie erwähnt - grundsätzlich hochwertige OSB-Späne erzeugen, gleichzeitig aber auchAs mentioned, the method and device according to the invention can produce high-quality OSB chips in principle, but at the same time also
Späne geringerer Qualität. Werden unterschiedliche Kategorien von Spänen erzeugt, so lassen sich diese klassifizieren durch einen nachgeschalteten Klassifizierungsschritt.Lower quality chips. If different categories of chips are generated, they can be classified by a subsequent classification step.
Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:The invention is explained in more detail with reference to the drawing. The following is shown in detail:
Fig. 1 zeigt einen Zerspaner in einer Ansicht von vorn, d.h. in einer Ansicht auf diejenige Seite, auf der sich der Gehäusedeckel mit dem Einsatz für das Vorprodukt befindet.Fig. 1 shows a chipper in a front view, i.e. in a view of the side on which the housing cover with the insert for the preliminary product is located.
Fig. 2 zeigt in vergrößertem Maßstab einen Axialschnitt des Zerspaners gemäß Fig. 1.FIG. 2 shows an axial section of the chipper according to FIG. 1 on an enlarged scale.
Fig. 3 zeigt in vergrößerter Darstellung einen Ausschnitt aus Fig. 2, nämlich ein Messerpaket.FIG. 3 shows an enlarged view of a detail from FIG. 2, namely a knife pack.
Wie man aus den Figuren 1 und 2 im einzelnen sieht, umfaßt der Zerspaner einen Rotor 1 , der von einer Welle 2 angetrieben ist. Der Rotor 1 enthält einen Kranz von achsparallelen Flügeln 3. Ein Messerkorb mit ebenfalls achsparallel angeordneten Messern 4 umschließt den Rotor 1. Rotor 1 und Messerkorb sind wiederum in einem Gehäuse 5 angeordnet und gemeinsam von diesem umschlossen. Gehäuse 5 weist einen Einlaß 6 für die zuzuführenden Hackschnitzel sowie einen Auslaß für den fertigen Span auf. Figur 2 veranschaulicht an zwei Stellen ein stabförmiges Vorprodukt 20. Dieses ist im vorliegenden Fall als regelmäßiger rechteckiger Klotz bestellt. Stattdessen könnte dieses Vorprodukt jedoch auch andersartig gestaltet sein, beispielsweise unregelmäßige Begrenzungsflächen aufweisen. Wesentlich ist nur, daß dieses Vorprodukt 20 mehr oder minder stabförmig ist, d. h. eine Längserstreckung aufweist, die größer ist, als die Quererstreckungen in hinzu senkrecht verlaufenden Ebenen.As can be seen from Figures 1 and 2 in detail, the chipper comprises a rotor 1 which is driven by a shaft 2. The rotor 1 contains a ring of axially parallel vanes 3. A knife basket with knives 4 likewise arranged axially parallel surrounds the rotor 1. The rotor 1 and knife basket are in turn arranged in a housing 5 and together enclosed by the latter. Housing 5 has an inlet 6 for the wood chips to be fed and an outlet for the finished chip. FIG. 2 illustrates a rod-shaped preliminary product 20 in two places. In the present case, this is ordered as a regular rectangular block. Instead, this preliminary product could also be designed differently, for example, have irregular boundary surfaces. It is only essential that this preliminary product 20 is more or less rod-shaped, ie has a longitudinal extension that is greater than the transverse extensions in planes that run perpendicular to it.
Das Vorprodukt 20 wird dem schachtförmigen Einlass 6 zugeführt - siehe Pfeil. Es gelangt sodann in den vom Rotor 1 umschlossenen Innenraum.The preliminary product 20 is fed to the shaft-shaped inlet 6 - see arrow. It then enters the interior enclosed by the rotor 1.
Dabei legt sich das Vorprodukt 20 - automatisch oder durch eine entsprechende Orientierungseinrichtung - derart, daß es vorwiegend zur Längsachse der Rotorwelle 2 verläuft, und damit mehr oder minder parallel zu den Messern 4. Das Vorprodukt hat eine erhebliche Größe, insbesondere eine erhebliche Länge, verglichen mit jenen Hackschnitzeln, die den bisher üblichen Messerringzerspannern zugeführt werden.Here, the preliminary product 20 - automatically or by means of a corresponding orientation device - lies in such a way that it runs predominantly to the longitudinal axis of the rotor shaft 2, and thus more or less parallel to the knives 4. The preliminary product has a considerable size, in particular a considerable length, compared with the chips that are supplied to the knife ring cutters that have been used up to now.
In den Figuren 3 und 4 sind in einem achssenkrechten Schnitt zwei Messerpakete dargestellt. Diese beiden Messerpakete sind jeweils Bestandteil des Messerringes der Maschine.In FIGS. 3 and 4, two knife packs are shown in a section perpendicular to the axis. These two knife sets are part of the knife ring of the machine.
Jedes Messerpaket ist wie folgt aufgebaut: Ein Tragklotz 10 trägt ein Schneidmesser 11 , das mittels einer Spannplatte 12 und einer Schraube 13 am Tragklotz 10 befestigt ist.Each knife pack is constructed as follows: A support block 10 carries a cutting knife 11 which is fastened to the support block 10 by means of a clamping plate 12 and a screw 13.
Jeder Tragklotz 10 weist eine Verschleißfläche 10.1 auf. Entscheidend ist, daß diese der Maschinenachse zugewandte Verschleißfläche 10.1 annähernd eben sind und somit nicht konzentrisch wie beim Stand der Technik. Dabei ist die Verschleißfläche 10.1 im Falle der Figur aus einer Verschleißplatte 10.2 gebildet, die ihrerseits am übrigen Tragklotz 10 befestigt ist. Im Falle der Figur 4 ist die Verschleißfläche 10.1 aus einer Verschleißschicht gebildet, die durch Aufbringen einer Verschleißschicht, vorzugsweise durch Auftragsschweißen oder Aufspritzen und anschließendes Schleifen erzeugt wurde.Each support block 10 has a wear surface 10.1. It is crucial that this wear surface 10.1 facing the machine axis is approximately flat and therefore not concentric as in the prior art. The wear surface 10.1 in the case of the figure is formed from a wear plate 10.2, which in turn is attached to the rest of the support block 10. In the case of FIG. 4, the wear surface 10.1 is formed from a wear layer that was produced by applying a wear layer, preferably by cladding or spraying and then grinding.
Bei der Ausführungsform gemäß Figur 3 ist ein Stockmesser 14 vorgesehen, das auf der dem Schneidmesser 11 gegenüberliegenden Seite des Tragklotzes 10 befestigt ist, und das mit dem Schneidmesser des benachbarten Messerpaketes zusammenarbeitet. Die Ausführungsform gemäß Figur 4 hingegen ist eine stockm esserlose Ausführungsform. In the embodiment according to FIG. 3, a stick knife 14 is provided which is fastened on the side of the support block 10 opposite the cutting knife 11 and which cooperates with the cutting knife of the neighboring knife package. The embodiment according to FIG. 4, on the other hand, is a stickless embodiment.

Claims

Patentansprüche claims
1. Vorprodukt zum Erzeugen von Späηen durch Zuführen zu einem Zerspaner, mit einer Vielzahl von Messern, deren Schneiden wenigstens annähernd parallel zur Ringachse verlaufen und die einen Arbeitsraum umschließen;1. preliminary product for producing chips by feeding to a chipper, with a plurality of knives, the cutting edges of which run at least approximately parallel to the ring axis and which enclose a working space;
1.1 das Vorprodukt ist im wesentlichen stabförmig;1.1 the preliminary product is essentially rod-shaped;
1.2 das Vorprodukt weist eine Länge auf, die zwischen der einfachen bis zweifachen Länge von sogenannten OS-Spänen liegt.1.2 the preliminary product has a length that is between one to two times the length of so-called OS chips.
2. Vorprodukt nach Anspruch 1 , gekennzeichnet durch eine Länge von 80 bis 150 mm.2. intermediate product according to claim 1, characterized by a length of 80 to 150 mm.
3. Vorprodukt nach Anspruch 1 oder 2, gekennzeichnet durch eine Breite in der Größenordnung von wenigstens 20 mm.3. intermediate product according to claim 1 or 2, characterized by a width in the order of at least 20 mm.
4. Vorprodukt nach einem der Ansprüche 1 bis 3, gekennzeichnet durch eine Länge, die wenigstens das 1 ,5-fache eines hierauf stehenden Maßes hat.4. An intermediate product according to one of claims 1 to 3, characterized by a length which is at least 1.5 times a dimension thereon.
5. Verfahren zum Weiterverarbeiten eines Vorproduktes gemäß einem der Ansprüche 1 bis 4, gekennzeichnet durch die folgenden Merkmale:5. A method for further processing a preliminary product according to one of claims 1 to 4, characterized by the following features:
5.1 das Vorprodukt wird um die Ringachse herum in Umdrehung versetzt, hierbei derart ausgerichtet, daß es im wesentlichen parallel zur Ringachse liegt und durch Fliehkraft gegen die Schneiden der Messer angedrückt wird.5.1 the preliminary product is set in rotation around the ring axis, aligned in such a way that it lies essentially parallel to the ring axis and is pressed against the cutting edges of the knives by centrifugal force.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Betriebsparameter wie die Messergestalt, der Messerwinkel derart gewählt sind, daß sich eine Spandicke von 0,2 bis 0,6 mm, vorzugsweise von 0,2 bis 0,4 mm ergibt.6. The method according to claim 5, characterized in that the operating parameters such as the knife shape, the knife angle such are chosen so that a chip thickness of 0.2 to 0.6 mm, preferably 0.2 to 0.4 mm results.
7. Verfahren nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß das Vorprodukt jeweils einem ziehenden7. The method according to any one of claims 5 or 6, characterized in that the preliminary product is one pulling
Schnitt unterworfen wird.Cut is subjected.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß dem Zerspanen ein Sichter-Schritt vorgeschaltet wird, um nur Vorprodukte bestimmter Abmessungen durchzulassen.8. The method according to any one of claims 1 to 7, characterized in that the machining is preceded by a classifier step in order to let only preliminary products of certain dimensions pass.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß dem Zerspanen ein Klassifizier-Schritt nachgeschaltet wird, ob die Späne nach Kriterien ihrer Gestalt oder ihrer Abmessungen oder ihres Gewichtes zu klassifizieren sind.9. The method according to any one of claims 1 to 8, characterized in that the machining is followed by a classification step, whether the chips are classified according to criteria of their shape or their dimensions or their weight.
10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Vorprodukt gehacktes Frischholz ist.10. The method according to any one of claims 1 to 9, characterized in that the intermediate product is chopped fresh wood.
11. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Vorprodukt Recycling-Holz ist.11. The method according to any one of claims 1 to 9, characterized in that the intermediate product is recycled wood.
12. Zerspaner zum Weiterverarbeiten eines Vorprodukts gemäß einem der Ansprüche 1 bis 4, mit einem Gehäuse, das einen Einlaß zum Einführen des Vorproduktes aufweist, mit einem vom Gehäuse umschlossenen Rotor sowie mit einem Kranz von Messern, deren Schneiden nach innen weisen.12. chipper for further processing of a preliminary product according to one of claims 1 to 4, with a housing having an inlet for introducing the preliminary product, with a rotor enclosed by the housing and with a ring of knives, the cutting edges of which face inwards.
13. Zerspaner nach Anspruch 12, dadurch gekennzeichnet, daß der Rotor mit Schaufeln ausgerüstet ist, die gegen die Rotorachse geneigt sind. 13. Chipper according to claim 12, characterized in that the rotor is equipped with blades which are inclined against the rotor axis.
14. Zerspaner nach Anspruch 13, dadurch gekennzeichnet, daß die Schaufeln des Rotors in Umfangsrichtung begrenzt beweglich sind.14. Chipper according to claim 13, characterized in that the blades of the rotor are limitedly movable in the circumferential direction.
15. Anlage nach einem der Ansprüche 13 oder 14, dadurch gekennzeichnet, daß die Schaufeln des Rotors an einer radial inneren Stelle pendelnd aufgehängt sind.15. Plant according to one of claims 13 or 14, characterized in that the blades of the rotor are suspended at a radially inner point.
16. Anlage nach einem der Ansprüche 13 bis 15, dadurch gekennzeichnet, daß die Rotorschaufeln gekrümmt oder abgekröpft sind.16. Plant according to one of claims 13 to 15, characterized in that the rotor blades are curved or bent.
17. Anlage nach einem der Ansprüche 13 bis 16, dadurch gekennzeichnet, daß die Parameter des Messers wie der Messerwinkel, der Freiwinkel und der Anstellwinkel derart gewählt sind, daß sich ein schälendes Abarbeiten des Vorproduktes ergibt.17. Plant according to one of claims 13 to 16, characterized in that the parameters of the knife such as the knife angle, the clearance angle and the angle of attack are selected such that there is a peeling processing of the preliminary product.
18. Anlage nach einem der Ansprüche 13 bis 17, dadurch gekennzeichnet, daß das Umfangsmaß zwischen zwei einander benachbarten Rotorschaufeln das zwei- bis dreifache der Länge eines Vorproduktes aufweist.18. Plant according to one of claims 13 to 17, characterized in that the circumferential dimension between two adjacent rotor blades has two to three times the length of a preliminary product.
19. Anlage nach einem der Ansprüche 13 bis 18, dadurch gekennzeichnet, daß das Axialmaß des Messerringes des Zerspaners das ein- bis dreifache der Länge der Vorproduktes aufweist.19. Plant according to one of claims 13 to 18, characterized in that the axial dimension of the cutter ring of the chipper has one to three times the length of the preliminary product.
20. Anlage nach einem der Ansprüche 13 bis 19, dadurch gekennzeichnet, daß dem Arbeitsraum eine Orientierungseinrichtung vorgeschaltet ist, um das Vorprodukt wenigstens im wesentlichen parallel zur Ringachse zuzuführen. 20. Plant according to one of claims 13 to 19, characterized in that an orientation device is connected upstream of the working space in order to feed the preliminary product at least substantially parallel to the ring axis.
EP01997378A 2000-11-25 2001-10-27 Method for producing wood chips Expired - Lifetime EP1335818B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10058626A DE10058626A1 (en) 2000-11-25 2000-11-25 Method and device for producing chips from wood
DE10058626 2000-11-25
PCT/EP2001/012460 WO2002042039A1 (en) 2000-11-25 2001-10-27 Intermediate product, method and device for producing wood chips

Publications (2)

Publication Number Publication Date
EP1335818A1 true EP1335818A1 (en) 2003-08-20
EP1335818B1 EP1335818B1 (en) 2006-01-04

Family

ID=7664684

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Application Number Title Priority Date Filing Date
EP01997378A Expired - Lifetime EP1335818B1 (en) 2000-11-25 2001-10-27 Method for producing wood chips

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US (1) US7210511B2 (en)
EP (1) EP1335818B1 (en)
JP (1) JP3727307B2 (en)
CN (1) CN1313253C (en)
AT (1) ATE314909T1 (en)
AU (1) AU2002221770A1 (en)
BR (1) BR0115604B1 (en)
CA (1) CA2429152C (en)
DE (2) DE10058626A1 (en)
ES (1) ES2256336T3 (en)
MY (1) MY134785A (en)
PT (1) PT1335818E (en)
RU (1) RU2266194C2 (en)
WO (1) WO2002042039A1 (en)

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WO2009048124A1 (en) * 2007-10-10 2009-04-16 Hoya Corporation Progressive refractive power lens manufacturing method and progressive refractive power lens
FI122578B (en) * 2008-12-05 2012-03-30 Andritz Oy Method and arrangement for improving the attachment arrangement of the chopping blade
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Also Published As

Publication number Publication date
CN1503717A (en) 2004-06-09
EP1335818B1 (en) 2006-01-04
JP2004513808A (en) 2004-05-13
AU2002221770A1 (en) 2002-06-03
DE10058626A1 (en) 2002-06-06
CA2429152C (en) 2008-08-05
RU2266194C2 (en) 2005-12-20
BR0115604A (en) 2003-09-16
US7210511B2 (en) 2007-05-01
DE50108642D1 (en) 2006-03-30
CA2429152A1 (en) 2002-05-30
ATE314909T1 (en) 2006-02-15
WO2002042039A1 (en) 2002-05-30
ES2256336T3 (en) 2006-07-16
PT1335818E (en) 2006-05-31
MY134785A (en) 2007-12-31
US20040045633A1 (en) 2004-03-11
JP3727307B2 (en) 2005-12-14
BR0115604B1 (en) 2011-04-05
CN1313253C (en) 2007-05-02

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