EP0792728B1 - Device for cutting wood - Google Patents

Device for cutting wood Download PDF

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Publication number
EP0792728B1
EP0792728B1 EP97101254A EP97101254A EP0792728B1 EP 0792728 B1 EP0792728 B1 EP 0792728B1 EP 97101254 A EP97101254 A EP 97101254A EP 97101254 A EP97101254 A EP 97101254A EP 0792728 B1 EP0792728 B1 EP 0792728B1
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EP
European Patent Office
Prior art keywords
wood
cutting
accordance
cutter
disc
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EP97101254A
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German (de)
French (fr)
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EP0792728A3 (en
EP0792728A2 (en
Inventor
Manfred Berthold
Hans Berthold
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Individual
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Individual
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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
    • B27L7/00—Arrangements for splitting wood
    • B27L7/02—Arrangements for splitting wood using rotating members, e.g. rotating screws
    • B27L7/04—Conical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/065—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by the cutter itself because of its form
    • 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
    • B27L11/005—Tools therefor
    • 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
    • B27L7/00—Arrangements for splitting wood
    • B27L7/02—Arrangements for splitting wood using rotating members, e.g. rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

  • the invention relates to a device for cutting wood, in particular from Tree trunks, with one in a housing, the at least one task opening and has a discharge opening, arranged motor-driven, at least a cutting device having a cutting edge, by means of which the Cutting opposing wood is separable.
  • the cutting device comprises a disc on which a cutting edge is arranged in a protruding spiral.
  • the clippings meet from a storage container disordered on the cutting device, so that result in irregularly long sections.
  • a shredder for wood is described in EP 0 019 092 A1, the clippings being fed via a funnel is fed to a cutting device designed as a worm shaft. Due to the conical shape of the screw shaft, the clippings are different cut long sections depending on which part of the cutting edge it is in Touch comes.
  • WO-A-84/03655 describes a device for cutting to length Known wood, the cutting device comprises a disc on which two Cutting edges are arranged in a protruding spiral. The cutting edges lie on axial spirals and work with obliquely arranged, stationary counter edges. This document is considered to be the closest prior art.
  • the invention is therefore based on the problem of a device for cutting to length to create wood that is simple in structure and easy to use in terms of security aspects is improved at the same time Enabling a defined cutting length.
  • the wood becomes self-sufficient with particular advantage "promoted by" the cutting device. Because as a result of the snail or The cutting edge describes a spiral shape when the cutting device rotates a movement running in the direction of pushing through that of the Cut wood follows and so, once gripped, independently under simultaneous Fragmentation is promoted.
  • This has the particular advantage that the Operator the long piece of wood only once in the area of the rotating Cutting edge must, after which the wood, which is counter-mounted, fully automatically is drawn in and carried through, so that no manual activities are necessary in the cutting area and thus the potential for injury is minimized. Since the cutting turns have a defined distance, is also with particular advantage also ensures a defined cutting length, so that Pieces of firewood with a defined length can be obtained.
  • a wall-shaped, the wood counter plate or the like. is arranged, which is under a Angle extends close to the cutting edge.
  • the wood lies on this plate special advantage and slips during the conveying and cutting process along the plate, making it easy to counter-support each Point in time, that is, even if a deep incision has already been made.
  • For Facilitation of movement along the plate can be done with rollers or the like. be provided on which the wood rolls off, but alternatively can also accordingly Dimensioned and stored rolls or rollers are provided instead of the plate his.
  • the angle at which the plate is set to the cutting edge can according to the invention depending on the number of turns and / or the distance between the turns and / or the height of the cutting edge or turns be chosen from each other.
  • the device according to the invention is in the context of a first alternative formed that the cutter is a substantially circular Includes disc on which the cutting edge is protruding.
  • the cutting edge is essentially parallel to the axis of rotation protrudes from the plane of the disc, with a corresponding inclination is conceivable, is advantageously simple on a substantially circular Disc, which is then driven in rotation by a drive motor known per se is arranged, which is particularly simple from a manufacturing point of view is.
  • the preferably from the outer edge of the disc inwardly curling edge an area outside the center of the disc and thus the axis of rotation ends what is advantageous in that it is achieved that the cut Wood, if it is conveyed to the cutting end and cut off, automatically falls out of the cutting area, since the center of the disc is free. On this is the easiest way for a safe delivery of the cut piece of wood taken care of from the cutting area.
  • the cutting edge describes in this embodiment advantageous due to its inward course during rotation a spiral movement to the center of the pane, which is the gripped wood then follows.
  • the cutting device is part of a second alternative embodiment
  • the cutting edge the helical turn of the worm shaft is formed. Also at Such a design is due to the helical cutting edge given a feed movement of the cutting edge with rotation of the shaft, which at gripped wood a conveying movement of the same with simultaneous division enables.
  • the advantages according to the invention are also in this form of implementation with regard to operational safety and the enabling of a defined Cutting length advantageously fulfilled.
  • the maximum depth of cut in the wood is in both embodiments the height of the cutting edge placed on the circular disk in one case or determined by the height of the screw turn to the bottom of the shaft, which are chosen accordingly according to the invention, so that the for each purpose appropriately sized device is available.
  • cut wood that is slightly thicker than the maximum cutting depth can be provided in a further embodiment of the invention, on the cutting device Arrange elements by means of which already partially incised wood is effective that the not yet cut part breaks.
  • the partially cut wood is advantageous at the latest when the wood is close to or already on the disc or the bottom of the wave. If the disc or the shaft is concerned with the Elements rotated further, so press them on the partially cut wood, so that this advantageously breaks, making it possible to cut wood of greater thickness is.
  • the cutting capacity of the device is not a single cutting and therefore limited to a single task opening.
  • the cutting device successively arranged feed openings are provided, especially in the worm shaft design appropriate length of the worm shaft a variety of feed openings can be provided.
  • the disc is arranged essentially vertically and the feed opening (s) are provided such that the wood is substantially horizontal is feedable, of course to facilitate the falling out of the cut piece from the cutting area the disc also tilted slightly can be.
  • the worm shaft is expediently arranged essentially horizontally, the outlet opening (s) are preferably provided such that the Wood can be fed onto the worm shaft from above.
  • Fig. 1 shows a cutting device 1 of the first alternative embodiment.
  • This Cutting device 1 consists of a circular disc 2, on which one Cutting edge 3 is arranged, for example welded on.
  • the cutting edge 3 describes a helical line and winds from the outside of the Disk 3 up to the area of the axis of rotation D, but ends outside the axis of rotation, to allow the cut wood to fall out.
  • the distance d between the individual turns of the cutting edge 3 always remains same, in order to ensure a defined cutting width on the one hand and on the other hand to prevent that due to different cutting edge spacing
  • Cutting edge 3 is damaged if the wood is partially cut into because the cutting edge is guided through the wood and changes Winding distance the cutting edge jammed in the cut wood and damaged can be.
  • the cutter 1 rotates in the direction of arrow A, which means that the cutting edge itself faces inwards Performs migratory movement.
  • FIG. 2 A view of a device of the first alternative embodiment is shown in FIG. 2, only the area of the cutting device is shown, all Housing parts, the motor and the like. are omitted for the sake of clarity.
  • Fig. 2 shows, the cutting edge 3 jumps from the plane of the disk in substantially parallel alignment to the axis of rotation D.
  • the cutting device 1 itself is rotatably mounted in a frame marked with 4 and by a motor, not shown, which preferably engages the rear of the pane 2, can be driven in rotation.
  • wedge-shaped elements 7, which are between the cutting edge 3 and the The base of the pane, directed towards the center of the pane, cf. also Fig. 1st
  • These elements are used to grab the wood when it is cut far enough is. If the wood is gripped, it becomes, if it is not yet complete is cut through when the disc moves further through the elements 7 pressed down and broken off, so that even pieces of wood that are stronger than that Height of the cutting edge 3, can be cut.
  • the cutting edge 3 itself must have at least two overlapping turns, so that a continuous Transport is guaranteed.
  • Via the second feed opening 5a that of the first is arranged substantially opposite, is a second piece of wood feedable and editable at the same time.
  • the spiral shape of the cutting edge 3 the two woods are always cut to different depths, so that the final Cutting is always done alternately, so that the pieces of wood without each other to clamp can fall out in the middle one after the other.
  • Fig. 3 shows in detail the area of the feed opening 5 (that of the feed opening 5a is designed accordingly)
  • the piece of wood 6 is already such here pushed far in that it is located in the area of the cutting edge 3 and at another Rotation of the disc 2 is gripped by the cutting edge and conveyed.
  • the Piece of wood 6 is supported on a plate 8.
  • the plate 8 is relative to the Cutting plane arranged at an angle, as can be seen in particular in FIG. 4 is. This angular arrangement ensures that there is always a Counter bearing is given, even if already cut deep into the wood 6 is.
  • the required counterbearing on the underside is provided by the plate 9 given on which the wood 6 rests. In the example shown, because the wood 6 is narrow, this is only gripped by the inner cutting aisle.
  • the Cutting edge 3 is in its initial area 10 to enable an immediate cut in this case with a vertical cutting edge 11 and a bevel Provide cutting piece 12.
  • Fig. 4 shows in a schematic sectional view the division of a piece of wood. This is already gripped by the outer cutting turn 3a and already partially incised. As a result of the rotation already done, the piece of wood became pulled inwards and as a result of the counter bearing through the plate 8 below a predetermined angle from the inside cutting edge turn 3b, which only continues the cutting process that begins continuously on the outside has cut deeply and in the example shown is already largely cut across. Since the piece of wood is stronger in the example shown in FIG. 4 dimensioned, it is already in the central pane area on the disc 2. To ensure that the wood is immediately torn off, they are already in place described elements 7 provided, of which as a result of the sectional view none is visible in FIG. 4. However, these will intervene with further rotation Direction of the double arrow B on the piece of wood 6a and tear it entirely so that it can fall out. The same happens of course with further rotation with the following incised piece of wood.
  • FIG. 5 A second embodiment is shown in FIG. 5.
  • the Cutting device 13 from a worm shaft 14, the cutting edges 15 the screw turns are formed on the top.
  • the worm shaft rotates 14 in the direction of arrow C also describes the cutting edge 15 in Direction of arrow E directed migration. If a piece of wood is now in the Introduced feed opening 16, this is counter-supported on the plate 17th seized by a wave turn and partially cut. As a result of the migratory movement the piece of wood 18 in the direction of arrow F further inwards pulled and ultimately cut off.
  • Elements 19 are also provided here serve to tear off the piece of wood if this is not due to its thickness can be cut completely.

Abstract

The arrangement consists of a housing with feed-in opening and outlet opening, in which a motor driven cutter is mounted. The cutter can be in the form of a spiral screw. The sharp edge of the spiral cuts the wood while at the same time it moves the wood through the housing. The length of the sections cut-off is equal to the pitch of the spiral which is a fixed distance. Alternatively the cutter can be in the shape of an Archimedean spiral which is arranged on a circular disc from which it extends at right angles.

Description

Die Erfindung betrifft eine Vorrichtung zum Ablängen von Holz, insbesondere von Baumstämmen, mit einer in einem Gehäuse, das wenigstens eine Aufgabeöffnung und eine Abgabeöffnung aufweist, angeordneten motorisch antreibbaren, wenistens eine Schneide aufweisenden Schneideinrichtung, mittels welcher das zum Schneiden gegengelagerte Holz trennbar ist.The invention relates to a device for cutting wood, in particular from Tree trunks, with one in a housing, the at least one task opening and has a discharge opening, arranged motor-driven, at least a cutting device having a cutting edge, by means of which the Cutting opposing wood is separable.

Zum Herstellen von beispielsweise Brennholz od.dgl. werden längere Holzstücke, beispielsweise geschnittene Balken oder die Baumstämme selbst, mit einer Schneid- oder Sägevorrichtung in handliche Stücke zerteilt, wobei als solche Schneid- oder Sägevorrichtungen alle möglichen bekannten Formen wie beispielsweise rein manuelle Handsägen, oder auch kleine elektrische Sägen bis hin zu feststehenden Kreis- oder Gattersägen verwendet werden, jeweils abhängig davon, ob die Brennholzherstellung für den Hausgebrauch oder in industriellem Maßstab erfolgt. Kommen größere, feststehende Maschinen, also beispielsweise Kreissägen od.dgl., zum Einsatz, so ist es erforderlich, das zu schneidende Holz der Schneide oder Säge zuzuführen, die ihrerseits lediglich eine feststehende Bewegung, also entweder eine Kreis- oder eine Vertikalbewegung, durchführt. Das Holz muß dabei an der insoweit feststehenden Schneide vorbeigeführt werden. Dies aber stellt ein großes Gefahrenpotential dar, da insoweit der die Maschine Bedienende bis nahe an den eigentlichen Schnittbereich zwecks Führung des Holzes langen muß. Zwar ist das Holz vor allem bei großen Anlagen beispielsweise mittels Zufördereinrichtungen zu der feststehenden Schneide transportierbar, jedoch führt dies dazu, daß die gesamte Anlage äußerst aufwendig gestaltet und damit sehr teuer in der Herstellung und Anschaffung ist und damit für kleinere Betriebe oder auch den Hausgebrauch insoweit gänzlich unrentabel ist. Weitere Probleme bei bisher bekannten feststehenden Schneid- oder Sägevorrichtungen liegen darin, eine definierte Schnittholzlänge zu erreichen, die insbesondere dann erforderlich ist, wenn das Brennholz nach dem Schneiden sauber gestapelt werden soll, um für längere Zeit eingelagert zu werden. Dies gilt sowohl im Hausgebrauch als auch für die Industriefertigung. Bisher ist es in der Regel erforderlich, bei feststehenden Vorrichtungen mit manueller Holzzuführung die abzuschneidende Länge entweder mit dem Augenmaß oder mittels einer Meßskala ungefähr festzulegen, was aber nur ein äußerst ungenaues und darüber hinaus umständliches Arbeiten zuläßt. Bei großen volllautomatischen Anlagen dagegen erfolgt die Förderung des Holzes zu diesem Zweck intermittierend, was zum einen äußerst aufwendig im Hinblick auf die Steuerung, zum anderen die gesamte Anlage in ihrem Aufbau und der Dimensionierung aufwendig ist.For producing, for example, firewood or the like. become longer pieces of wood, for example, cut beams or the tree trunks themselves, with a Cutting or sawing device cut into handy pieces, being as such Cutting or sawing devices all possible known shapes such as purely manual hand saws, or even small electric saws can be used for fixed circular or gang saws, depending on each whether it is making firewood for home use or in industrial Scale done. Come bigger, fixed machines, for example Circular saws or the like., It is necessary to use the wood to be cut to feed the cutting edge or saw, which in turn is only a fixed one Movement, i.e. either a circular or a vertical movement. The wood has to be guided past the fixed cutting edge. However, this represents a great potential hazard, as far as the machine is concerned Operator until close to the actual cutting area for guidance of the wood. The wood is mainly used in large systems, for example can be transported to the fixed cutting edge by means of feed devices, however, this leads to the fact that the entire system is extremely expensive designed and therefore very expensive to manufacture and purchase and thus completely unprofitable for smaller companies or for domestic use is. Other problems with previously known fixed cutting or sawing devices are to achieve a defined length of lumber, which in particular is then required when the firewood is clean after cutting should be stacked to be stored for a long time. This applies to both in domestic use as well as for industrial production. So far it is usually required for fixed devices with manual wood feeding Length to be cut off either by eye or by means of a Measuring scale about to determine what is but an extremely imprecise and above also allows cumbersome work. For large, fully automatic systems on the other hand, the wood is conveyed intermittently for this purpose, which on the one hand is extremely complex in terms of control, on the other hand the entire system is complex in its structure and dimensioning.

Aus der Patentanmeldung WO 84 02871 A1 ist eine Vorrichtung zum Zerkleinern von Holz bekannt, deren Schneideinrichtung eine Scheibe umfasst, auf welcher eine Schneide spiralförmig vorspringend angeordnet ist. Das Schnittgut trifft dabei aus einem Vorratsbehälter ungeordnet auf die Schneideinrichtung, so dass sich unregelmäßig lange Abschnitte ergeben. Eine Zerkleinerungsvorrichtung für Holz wird in der EP 0 019 092 A1 beschrieben, wobei das Schnittgut über einen Trichter an eine als Schneckenwelle ausgebildete Schnitteinrichtung zugeführt wird. Durch die konische Form der Schneckenwelle wird das Schnittgut in unterschiedlich lange Abschnitte zerteilt, je nachdem, mit welchem Teil der Schneide es in Berührung kommt.From the patent application WO 84 02871 A1 is a device for crushing of wood known, the cutting device comprises a disc on which a cutting edge is arranged in a protruding spiral. The clippings meet from a storage container disordered on the cutting device, so that result in irregularly long sections. A shredder for wood is described in EP 0 019 092 A1, the clippings being fed via a funnel is fed to a cutting device designed as a worm shaft. Due to the conical shape of the screw shaft, the clippings are different cut long sections depending on which part of the cutting edge it is in Touch comes.

Aus der WO-A-84/03655 ist eine Vorrichtung zum Ablängen von Holz bekannt, deren Schneideinrichtung eine Scheibe umfasst, auf welcher zwei Schneiden spiralförmig vorspringend angeordnet sind. Die Schneidkanten liegen auf axiale Spiralen und wirken mit schräg angeordneten, stationären Gegenkanten. Diese Schrift wird als der nächstliegender Stand der Technik angesehen.WO-A-84/03655 describes a device for cutting to length Known wood, the cutting device comprises a disc on which two Cutting edges are arranged in a protruding spiral. The cutting edges lie on axial spirals and work with obliquely arranged, stationary counter edges. This document is considered to be the closest prior art.

Der Erfindung liegt somit das Problem zugrunde, eine Vorrichtung zum Ablängen von Holz zu schaffen, die in ihrem Aufbau einfach gestaltet und in ihrer Handhabung im Hinblick auf sicherheitstechnische Aspekte verbessert ist bei gleichzeitiger Ermöglichung einer definierten Abschneidlänge.The invention is therefore based on the problem of a device for cutting to length to create wood that is simple in structure and easy to use in terms of security aspects is improved at the same time Enabling a defined cutting length.

Zur Lösung dieses Problems sind Vorrichtungen gemäß den Ansprüchen 1 und 9 vorgesehen.To solve this problem are devices according to claims 1 and 9 intended.

Durch die erfindungsgemäße Ausbildung der Schneideinrichtung mit ihrer schnecken- oder spiralförmigen Schneide wird das Holz mit besonderem Vorteil selbständig "durch" die Ablängvorrichtung gefördert. Denn infolge der schnecken- oder spiralförmigen Ausbildung beschreibt die Schneide bei Rotation der Schneideinrichtung eine quasi in Durchschubrichtung laufende Bewegung, der das von der Schneide ergriffene Holz folgt und so, einmal gegriffen, selbständig unter gleichzeitiger Zerteilung durchgefördert wird. Dies hat den besonderen Vorteil, daß die Bedienperson das lange Holzstück lediglich einmal in den Bereich der umlaufenden Schneide führen muß, wonach das Holz, das ja gegengelagert ist, vollautomatisch eingezogen und durchgefördert wird, so daß keinerlei manuelle Tätigkeiten im Schneidbereich nötig sind und damit das Verletzungspotential minimiert ist. Da die Schneidenwindungen einen definierten Abstand aufweisen, ist ferner mit besonderem Vorteil auch eine definierte Schnittlänge gewährleistet, so daß Brennholzstücke mit definierter Länge erhalten werden können.Due to the inventive design of the cutting device with its helical or spiral cutting edge, the wood becomes self-sufficient with particular advantage "promoted by" the cutting device. Because as a result of the snail or The cutting edge describes a spiral shape when the cutting device rotates a movement running in the direction of pushing through that of the Cut wood follows and so, once gripped, independently under simultaneous Fragmentation is promoted. This has the particular advantage that the Operator the long piece of wood only once in the area of the rotating Cutting edge must, after which the wood, which is counter-mounted, fully automatically is drawn in and carried through, so that no manual activities are necessary in the cutting area and thus the potential for injury is minimized. Since the cutting turns have a defined distance, is also with particular advantage also ensures a defined cutting length, so that Pieces of firewood with a defined length can be obtained.

Damit das Holz nach dem Zuführen in die Aufgabeöffnung möglichst schnell ergriffen und der Einschneidevorgang sofort beginnt, ist vorgesehen, daß im Bereich der Aufgabeöffnung eine wandförmige, das Holz gegenlagernde Platte od.dgl. angeordnet ist, die sich unter einem Winkel bis nahe an die Schneide erstreckt. An dieser Platte liegt das Holz mit besonderem Vorteil an und rutscht während des Förder- und Schneidvorgangs an der Platte entlang, wodurch auf einfache Weise die Gegenlagerung zu jedem Zeitpunkt, also auch dann, wenn schon tief eingeschnitten ist, realisiert ist. Zur Erleichterung der Bewegung längs der Platte kann diese auch mit Rollen od.dgl. versehen sein, an denen das Holz abrollt, alternativ können aber auch entsprechend dimensionierte und gelagerte Rollen oder Walzen anstelle der Platte vorgesehen sein. Der Winkel, unter welchem die Platte zur Schneide eingestellt ist, kann erfindungsgemäß in Abhängigkeit von der Anzahl der Windungen und/oder dem Abstand der Windungen und/oder der Höhe der Schneide bzw. der Windungen voneinander gewählt sein.So that the wood is gripped as quickly as possible after being fed into the feed opening and the cutting process starts immediately provided that a wall-shaped, the wood counter plate or the like. is arranged, which is under a Angle extends close to the cutting edge. The wood lies on this plate special advantage and slips during the conveying and cutting process along the plate, making it easy to counter-support each Point in time, that is, even if a deep incision has already been made. For Facilitation of movement along the plate can be done with rollers or the like. be provided on which the wood rolls off, but alternatively can also accordingly Dimensioned and stored rolls or rollers are provided instead of the plate his. The angle at which the plate is set to the cutting edge can according to the invention depending on the number of turns and / or the distance between the turns and / or the height of the cutting edge or turns be chosen from each other.

Die erfindungsgemäß Vorrichtung ist im Rahmen einer ersten Alternative derart ausgebildet, daß die Schneideinrichtung eine im wesentlichen kreisförmige Scheibe umfaßt, auf welcher die Schneide vorspringend angeordnet ist. Die Schneide, die in weiterer Ausgestaltung im wesentlichen parallel zur Drehachse aus der Scheibenebene vorspringt, wobei auch eine entsprechende Schrägstellung denkbar ist, ist vorteilhaft einfach auf einer im wesentlichen kreisförmigen Scheibe, die dann mittels eines an sich bekannten Antriebsmotors rotierend angetrieben wird, angeordnet, was aus fertigungstechnischer Sicht besonders einfach ist. In weiterer Erfindungsausgestaltung kann vorgesehen sein, daß die sich vorzugsweise vom äußeren Rand der Scheibe nach innen windende Schneide in einem Bereich außerhalb der Scheibenmitte und damit der Drehachse endet, was dahingehend von Vorteil ist, daß dadurch erreicht wird, daß das geschnittene Holz, wenn es bis an das Schneidenende gefördert und abgeschnitten ist, automatisch aus dem Schneidenbereich fällt, da die Scheibenmitte insoweit frei ist. Auf diese Weise ist einfachst für eine sichere Ausgabe des geschnittenen Holzstückes aus dem Schneidenbereich gesorgt. Die Schneide beschreibt bei dieser Ausführungsform vorteilhaft infolge ihres nach innen gerichteten Verlaufes bei Rotation eine spiralförmige Wanderbewegung zur Scheibenmitte, der das ergriffene Holz dann folgt.The device according to the invention is in the context of a first alternative formed that the cutter is a substantially circular Includes disc on which the cutting edge is protruding. The In a further embodiment, the cutting edge is essentially parallel to the axis of rotation protrudes from the plane of the disc, with a corresponding inclination is conceivable, is advantageously simple on a substantially circular Disc, which is then driven in rotation by a drive motor known per se is arranged, which is particularly simple from a manufacturing point of view is. In a further embodiment of the invention it can be provided that the preferably from the outer edge of the disc inwardly curling edge an area outside the center of the disc and thus the axis of rotation ends what is advantageous in that it is achieved that the cut Wood, if it is conveyed to the cutting end and cut off, automatically falls out of the cutting area, since the center of the disc is free. On this is the easiest way for a safe delivery of the cut piece of wood taken care of from the cutting area. The cutting edge describes in this embodiment advantageous due to its inward course during rotation a spiral movement to the center of the pane, which is the gripped wood then follows.

Im Rahmen einer zweiten Ausführungsalternative ist die Schneideinrichtung erfindungsgemäß als Schneckenwelle ausgebildet, wobei die Schneide an der schraubenförmigen Windung der Schneckenwelle ausgebildet ist. Auch bei einer darartigen Ausbildung ist infolge des schneckenförmigen Schneidenverlaufs eine Vorschubbewegung der Schneide bei Rotation der Welle gegeben, die bei gegriffenem Holz eine Förderbewegung desselben unter gleichzeitiger Zerteilung ermöglicht. Auch bei dieser Realisationsform sind die erfindungsgemäßen Vorteile im Hinblick auf die Betriebssicherheit und die Ermöglichung einer definierten Schnittlänge vorteilhaft erfüllt.The cutting device is part of a second alternative embodiment According to the invention designed as a worm shaft, the cutting edge the helical turn of the worm shaft is formed. Also at Such a design is due to the helical cutting edge given a feed movement of the cutting edge with rotation of the shaft, which at gripped wood a conveying movement of the same with simultaneous division enables. The advantages according to the invention are also in this form of implementation with regard to operational safety and the enabling of a defined Cutting length advantageously fulfilled.

Die maximale Schnittiefe in das Holz wird bei beiden Ausführungsformen durch die Höhe der im einen Fall auf die kreisförmige Scheibe aufgesetzten Schneide bzw. durch die Höhe der Schneckenwindung bis zum Wellengrund vorgegeben, die erfindungsgemäß dementsprechend gewählt sind, so daß für jeden Zweck die entsprechend dimensionierte Vorrichtung zur Verfügung steht. Um zu ermöglichen, auch Holz zu schneiden, das etwas stärker ist als die maximale Schneidtiefe kann in weiterer Erfindungsausgestaltung vorgesehen sein, an der Schneideinrichtung Elemente anzuordnen, mittels denen derart auf das bereits teilweise eingeschnittene Holz einwirkbar ist, daß der noch nicht geschnittene Teil bricht. Mit diesen Elementen, die im Falle der ersten Ausführungsalternative (Scheibenausführung) als sich zwischen der Scheibenoberfläche und der zur Scheibenmitte weisenden Schneidenwand erstreckende Keile od.dgl., und die bei der zweiten Ausführungsalternative (Schneckenwelle) als sich zwischen der Windung und dem Wellengrund erstreckende Keile od.dgl. ausgebildet sind, die sich in Förderrichtung der Schneckenwelle erstrecken, wird das teilgeschnittene Holz vorteilhaft spätestens dann ergriffen, wenn das Holz nahe am oder bereits auf dem Scheiben- oder Wellengrund aufliegt. Wird die Scheibe oder die Welle bei Anliegen der Elemente weitergedreht, so drücken diese auf das teilgeschnittene Holz, so daß dieses vorteilhaft bricht und so ein Schneiden von Holz größerer Stärke möglich ist. The maximum depth of cut in the wood is in both embodiments the height of the cutting edge placed on the circular disk in one case or determined by the height of the screw turn to the bottom of the shaft, which are chosen accordingly according to the invention, so that the for each purpose appropriately sized device is available. To enable also cut wood that is slightly thicker than the maximum cutting depth can be provided in a further embodiment of the invention, on the cutting device Arrange elements by means of which already partially incised wood is effective that the not yet cut part breaks. With these elements, which in the case of the first design alternative (pane design) than between the surface of the pane and that towards the center of the pane pointing wedge or the like, and the like in the second Execution alternative (worm shaft) as between the turn and wedges or the like which extend to the bottom of the shaft. are formed, which are in the conveying direction extend the worm shaft, the partially cut wood is advantageous at the latest when the wood is close to or already on the disc or the bottom of the wave. If the disc or the shaft is concerned with the Elements rotated further, so press them on the partially cut wood, so that this advantageously breaks, making it possible to cut wood of greater thickness is.

Da infolge des kontinuierlichen Schneidens während der gesamten Förderung quasi an jedem Punkt der Schneideinrichtung geschnitten werden kann, ist somit die Schneidkapazität der Vorrichtung nicht auf einen einzigen Schneidvorgang und damit nur auf eine einzige Aufgabeöffnung begrenzt. Infolgedessen kann in weiterer Erfindungsausgestaltung vorgesehen sein, daß wenigstens zwei in Drehrichtung der Schneideinrichtung hintereinander angeordnete Aufgabeöffnungen vorgesehen sind, wobei insbesondere bei der Schneckenwellenausführung bei entsprechender Länge der Schneckenwelle eine Vielzahl von Aufgabeöffnungen vorgesehen sein können.As a result of the continuous cutting throughout the conveyance can be cut at virtually any point of the cutting device the cutting capacity of the device is not a single cutting and therefore limited to a single task opening. As a result, in Another embodiment of the invention can be provided that at least two in the direction of rotation the cutting device successively arranged feed openings are provided, especially in the worm shaft design appropriate length of the worm shaft a variety of feed openings can be provided.

Bei der Scheibenalternative hat es sich als zweckmäßig erwiesen, wenn die Scheibe erfindungsgemäß im wesentlichen vertikal angeordnet ist und die Aufgabeöffnung(en) derart vorgesehen sind, daß das Holz im wesentlichen horizontal zuführbar ist, wobei selbstverständlich zur Erleichterung des Herausfallens des geschnittenen Stückes aus dem Schneidbereich die Scheibe auch etwas gekippt sein kann. Die Schneckenwelle ist zweckmäßig im wesentlichen horizontal angeordnet, wobei die Ausgabeöffnung(en) bevorzugt derart vorgesehen sind, daß das Holz von oben auf die Schneckenwelle zuführbar ist.In the case of the disk alternative, it has proven expedient if the According to the invention, the disc is arranged essentially vertically and the feed opening (s) are provided such that the wood is substantially horizontal is feedable, of course to facilitate the falling out of the cut piece from the cutting area the disc also tilted slightly can be. The worm shaft is expediently arranged essentially horizontally, the outlet opening (s) are preferably provided such that the Wood can be fed onto the worm shaft from above.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den im folgenden beschriebenen Ausführungsbeispielen sowie anhand der Zeichnung. Dabei zeigen:

Fig. 1
eine Aufsicht auf die Schneideinrichtung der ersten Ausführungsalternative (kreisförmige Scheibe),
Fig. 2
eine perspektivische Ansicht der Vorrichtung der ersten Ausführungsalternaive,
Fig. 3
eine perspektivische Ansicht der Vorrichtung aus Fig. 2 mit Blick in die Aufgabeöffnung,
Fig. 4
eine Schnittansicht durch die Schneideinrichtung der ersten Ausführungsalternative, und
Fig. 5
eine Ansicht der Schneideinrichtung der zweiten Ausführungsalternative (Schneckenwelle).
Further advantages, features and details of the invention result from the exemplary embodiments described below and from the drawing. Show:
Fig. 1
a top view of the cutting device of the first alternative embodiment (circular disc),
Fig. 2
2 shows a perspective view of the device of the first alternative embodiment,
Fig. 3
2 shows a perspective view of the device from FIG. 2 with a view into the feed opening,
Fig. 4
a sectional view through the cutting device of the first embodiment, and
Fig. 5
a view of the cutting device of the second alternative embodiment (worm shaft).

Fig. 1 zeigt eine Schneideinrichtung 1 der ersten Ausführungsalternative. Diese Schneideinrichtung 1 besteht aus einer kreisförmigen Scheibe 2, auf welcher eine Schneide 3 angeordnet, beispielsweise aufgeschweißt ist. Die Schneide 3 beschreibt eine schneckenförmige Linie und windet sich vom Außenbereich der Scheibe 3 bis in den Bereich der Drehachse D, endet jedoch außerhalb der Drehachse, um auf diese Weise das Herausfallen des geschnittenen Holzes zu ermöglichen. Der Abstand d der einzelnen Windungen der Schneide 3 bleibt dabei stets gleich, um zum einen für eine definierte Schnittbreite zu sorgen, und um andererseits zu verhindern, daß infolge unterschiedlichen Schneidenabstands die Schneide 3 beschädigt wird, wenn in das Holz teilweise eingeschntiten wird, da die Schneide ja insoweit durch das Holz geführt wird und bei sich änderndem Windungsabstand die Schneide im eingeschnittenen Holz verklemmt und beschädigt werden kann. Die Rotation der Schneideinrichtung 1 erfolgt in Richtung des Pfeiles A, was zur Folge hat, daß die Schneide selbst eine nach innen gerichtete Wanderbewegung durchführt.Fig. 1 shows a cutting device 1 of the first alternative embodiment. This Cutting device 1 consists of a circular disc 2, on which one Cutting edge 3 is arranged, for example welded on. The cutting edge 3 describes a helical line and winds from the outside of the Disk 3 up to the area of the axis of rotation D, but ends outside the axis of rotation, to allow the cut wood to fall out. The distance d between the individual turns of the cutting edge 3 always remains same, in order to ensure a defined cutting width on the one hand and on the other hand to prevent that due to different cutting edge spacing Cutting edge 3 is damaged if the wood is partially cut into because the cutting edge is guided through the wood and changes Winding distance the cutting edge jammed in the cut wood and damaged can be. The cutter 1 rotates in the direction of arrow A, which means that the cutting edge itself faces inwards Performs migratory movement.

Eine Ansicht einer Vorrichtung der ersten Ausführungsalternative ist in Fig. 2 gezeigt, wobei lediglich der Bereich der Schneideinrichtung gezeigt ist, sämtliche Gehäuseteile, der Motor u.dgl. der Übersichtlichkeit halber weggelassen sind. Wie Fig. 2 zu entnehmen ist, springt die Schneide 3 von der Scheibenebene in im wesentlichen paralleler Ausrichtung zur Drehachse D hervor. Die Schneideinrichtung 1 selber ist in einem mit 4 gekennzeichneten Gestell drehbar gelagert und von einem nicht gezeigten Motor, der bevorzugt an der Rückseite der Scheibe 2 angreift, rotierend antreibbar. Im Bereich der Schneideinrichtung ist eine Aufgabeöffnung 5 zur Aufgabe des zu schneidenden Holzes 6 vorgesehen, deren genaue Ausbildung bezüglich Fig. 3 näher beschriebne wird. Über diese Ausgabeöffnung 5 wird das Holz in den Schneidbereich geführt, dort von den Schneiden ergriffen und nach innen gezogen. Nach Beendigung des Schneidens fällt das Holzstück im Bereich der Scheibenmitte heraus.A view of a device of the first alternative embodiment is shown in FIG. 2, only the area of the cutting device is shown, all Housing parts, the motor and the like. are omitted for the sake of clarity. How Fig. 2 shows, the cutting edge 3 jumps from the plane of the disk in substantially parallel alignment to the axis of rotation D. The cutting device 1 itself is rotatably mounted in a frame marked with 4 and by a motor, not shown, which preferably engages the rear of the pane 2, can be driven in rotation. There is a feed opening in the area of the cutting device 5 provided for the task of the wood to be cut 6, their exact Training with reference to Fig. 3 is described in more detail. Via this dispensing opening 5 the wood is led into the cutting area, where it is gripped by the cutting edges and pulled inside. When the cutting is finished, the piece of wood falls in the area of the center of the pane.

Gezeigt sind ferner keilförmige Elemente 7, die zwischen der Schneide 3 und dem Scheibengrund, zur Scheibenmitte hin gerichtet, angeordnet sind, vgl. auch Fig. 1. Diese Elemente dienen dazu, das Holz zu ergreifen, wenn es weit genug eingeschnitten ist. Wird das Holz gegriffen, so wird es, sofern es noch nicht vollständig durchgeschnitten ist, bei Weiterbewegung der Scheibe durch die Elemente 7 nach unten gedrückt und abgebrochen, so daß auch Holzstücke, die stärker sind als die Höhe der Schneide 3, geschnitten werden können. Die Schneide 3 selbst muß mindestens zwei sich überlappende Windungen aufweisen, damit ein kontinuierlicher Transport gewährleistet ist. Über die zweite Aufgabeöffnung 5a, die der ersten im wesentlichen gegenüberliegend angeordnet ist, ist ein zweites Holzstück gleichzeitig zuführ- und bearbeitbar. Infolge der Spiralform der Schneide 3 werden die beiden Hölzer stets unterschiedlich tief eingeschnitten, so daß das letztendliche Abschneiden stets abwechselnd erfolgt, so daß die Holzstücke ohne einander zu klemmen mittig nacheinander herausfallen können.Also shown are wedge-shaped elements 7, which are between the cutting edge 3 and the The base of the pane, directed towards the center of the pane, cf. also Fig. 1st These elements are used to grab the wood when it is cut far enough is. If the wood is gripped, it becomes, if it is not yet complete is cut through when the disc moves further through the elements 7 pressed down and broken off, so that even pieces of wood that are stronger than that Height of the cutting edge 3, can be cut. The cutting edge 3 itself must have at least two overlapping turns, so that a continuous Transport is guaranteed. Via the second feed opening 5a, that of the first is arranged substantially opposite, is a second piece of wood feedable and editable at the same time. As a result of the spiral shape of the cutting edge 3 the two woods are always cut to different depths, so that the final Cutting is always done alternately, so that the pieces of wood without each other to clamp can fall out in the middle one after the other.

Fig. 3 zeigt im Detail den Bereich der Aufgabeöffnung 5 (wobei der der Aufgabeöffnung 5a entsprechend ausgebildet ist) Das Holzstück 6 ist hier bereits derart weit eingeschoben, daß es sich im Bereich der Schneide 3 befindet und bei weiterer Drehung der Scheibe 2 von der Schneide gegriffen und mitgefördert wird. Das Holzstück 6 ist an einer Platte 8 gegengelagert. Die Platte 8 ist bezüglich der Schneidebene in einem Winkel angeordnet, wie insbesondere der Fig. 4 zu entnehmen ist. Aufgrund dieser winkligen Anordnung ist gewährleistet, daß stets eine Gegenlagerung gegeben ist, auch dann, wenn bereits tief in das Holz 6 eingeschnitten ist. Die erforderliche unterseitige Gegenlagerung ist durch die Platte 9 gegeben, auf welcher das Holz 6 aufliegt. Im gezeigten Beispiel wird, da das Holz 6 schmal ist, dieses erst von dem weiter innen liegenden Schneidengang gegriffen. Ist das Holz 6 aber stärker dimensioniert, so wird es bereits durch den äußeren Schneidengang gegriffen, also wesentlich früher als im gezeigten Beispiel. Die Schneide 3 ist in ihrem Anfangsbereich 10 zur Ermöglichung eines sofortigen Einschnitts in diesem Fall mit einer vertikalen Schneide 11 und einem angeschrägten Schneidenstück 12 versehen.Fig. 3 shows in detail the area of the feed opening 5 (that of the feed opening 5a is designed accordingly) The piece of wood 6 is already such here pushed far in that it is located in the area of the cutting edge 3 and at another Rotation of the disc 2 is gripped by the cutting edge and conveyed. The Piece of wood 6 is supported on a plate 8. The plate 8 is relative to the Cutting plane arranged at an angle, as can be seen in particular in FIG. 4 is. This angular arrangement ensures that there is always a Counter bearing is given, even if already cut deep into the wood 6 is. The required counterbearing on the underside is provided by the plate 9 given on which the wood 6 rests. In the example shown, because the wood 6 is narrow, this is only gripped by the inner cutting aisle. If the wood 6 is dimensioned more strongly, however, it becomes already through the outer Cutting edge gripped, so much earlier than in the example shown. The Cutting edge 3 is in its initial area 10 to enable an immediate cut in this case with a vertical cutting edge 11 and a bevel Provide cutting piece 12.

Fig. 4 zeigt in einer schematischen Schnittansicht die Zerteilung eines Holzstücks. Dieses ist bereits von der äußeren Schneidenwindung 3a gegriffen und bereits teilweise eingeschnitten. Infolge der bereits erfolgten Rotation wurde das Holzstück nach innen gezogen und infolge der Gegenlagerung durch die Platte 8 unter einem vorbestimmten Winkel von der weiter innen liegenden Schneidenwindung 3b, die ja lediglich den kontinuierlich außen beginnenden Schneidvorgang fortgesetzt hat, tief eingeschnitten und im gezeigten Beispiel bereits weitestgehend durchgeschnitten. Da das Holzstück in dem in Fig. 4 gezeigten Beispiel stärker bemessen ist, liegt es im mittigen Scheibenbereich bereits auf der Scheibe 2 auf. Um nun ein sofortiges Abreißen des Holzes zu gewährleisten, sind die bereits eingangs beschriebenen Elemente 7 vorgesehen, von denen infolge der Schnittansicht in Fig. 4 keines sichtbar ist. Jedoch greifen diese bei weiterer Rotation in Richtung des Doppelpfeils B an dem Holzstück 6a an und reißen dieses gänzlich ab, so daß es herausfallen kann. Gleiches geschieht natürlich bei weiterer Rotation mit dem nachfolgenden eingeschnittenen Holzstück.Fig. 4 shows in a schematic sectional view the division of a piece of wood. This is already gripped by the outer cutting turn 3a and already partially incised. As a result of the rotation already done, the piece of wood became pulled inwards and as a result of the counter bearing through the plate 8 below a predetermined angle from the inside cutting edge turn 3b, which only continues the cutting process that begins continuously on the outside has cut deeply and in the example shown is already largely cut across. Since the piece of wood is stronger in the example shown in FIG. 4 dimensioned, it is already in the central pane area on the disc 2. To ensure that the wood is immediately torn off, they are already in place described elements 7 provided, of which as a result of the sectional view none is visible in FIG. 4. However, these will intervene with further rotation Direction of the double arrow B on the piece of wood 6a and tear it entirely so that it can fall out. The same happens of course with further rotation with the following incised piece of wood.

Eine zweite Ausführungsform ist in Fig. 5 dargestellt. Bei dieser besteht die Schneideinrichtung 13 aus einer Schneckenwelle 14, wobei die Schneiden 15 auf den Schneckenwindungen oberseitig ausgebildet sind. Bei Rotation der Schnekkenwelle 14 in Richtung des Pfeils C beschreibt auch hier die Schneide 15 eine in Richtung des Pfeils E gerichtet Wanderbewegung. Wird nun ein Holzstück in die Aufgabeöffnung 16 eingeführt, wird dieses unter Gegenlagerung an der Platte 17 von einer Wellenwindung erfaßt und teilweise eingeschnitten. Infolge der Wanderbewegung wird das Holzstück 18 in Richtung des Pfeils F weiter nach innen gezogen und letztlich abgeschnitten. Auch hier sind Elemente 19 vorgesehen, die zum Abreißen des Holzstücks dienen, wenn dieses infolge seiner Stärke nicht vollständig durchgeschnitten werden kann.A second embodiment is shown in FIG. 5. In this there is the Cutting device 13 from a worm shaft 14, the cutting edges 15 the screw turns are formed on the top. When the worm shaft rotates 14 in the direction of arrow C also describes the cutting edge 15 in Direction of arrow E directed migration. If a piece of wood is now in the Introduced feed opening 16, this is counter-supported on the plate 17th seized by a wave turn and partially cut. As a result of the migratory movement the piece of wood 18 in the direction of arrow F further inwards pulled and ultimately cut off. Elements 19 are also provided here serve to tear off the piece of wood if this is not due to its thickness can be cut completely.

Claims (15)

  1. Device for cutting wood, especially of tree trunks, with a motor-driven cutting device arranged in a housing which displays at least one feed opening and one discharge opening, displaying at least one cutter by means of which the wood which is stabilised for cutting can be split, where the cutting device (1) comprises one essentially circular disc (2), on which the cutter (3) is arranged so as to protrude, whereby the cutter (3) is designed to run in the form of a spiral, and displays a constant distance from the disc, and that in the area of the feed opening (5) a wall-type plate (8) or similar which stabilises the wood is arranged, which extends at an angle almost as far as the cutter (3), so that when the cutting device (1) is actuated, the wood (6) can be conveyed automatically and split at the same time.
  2. Device in accordance with one of the previous claims, characterised in that the spacing of the windings of the spiral cutter (3) is constant.
  3. Device in accordance with Claim 1 or 2, characterised in that the cutter (3) protrudes essentially parallel to the axis of rotation (D) from the plane of the disc.
  4. Device in accordance with one of the previous claims, characterised In that for preference the cutter (3) which winds inwards from the external edge of the disc (2) ends in an area outside the centre of the disc and thus of the axis of rotation (D).
  5. Device in accordance with one of the previous claims, characterised in that the disc (2) is essentially aligned vertically, and the feed opening (5) is arranged in such a way that the wood (6) can be fed in essentially horizontally.
  6. Device in accordance with one of the previous claims, characterised by elements (7) provided on the cutting device (1) by means of which the already partly-cut wood can be acted upon such that the part which has not yet been cut breaks.
  7. Device in accordance with Claim 6, characterised in that the elements (7) are in the form of wedges or similar extending between the surface of the disc and the cutting wall pointing towards the centre of the disc.
  8. Device in accordance with one of the previous claims, characterised in that the height of the winding of the cutter (3) arranged on the disc (2) is selected in accordance with the maximum strength of the wood to be cut.
  9. Device for cutting wood, especially of tree trunks, with a motor-driven cutting device arranged in a housing which displays at least one feed opening and one discharge opening, displaying at least one cutter by means of which the wood which is stabilised for cutting can be split, wherein the cutter (15) of the cutting device (13) Is designed to run in the form of a spiral screw and the cutting device is a spiral roller (14), wherein the cutter (15) is formed on the screw-shaped winding of the spiral roller (14) and displays a constant distance from the spiral axis, and that In the area of the feed opening (16) a wall-type plate (17) which stabilises the wood or similar is arranged, which extends at an angle almost as far as the cutter (15), so that when the cutting device (13) is actuated, the wood (18) is conveyed automatically and split at the same time.
  10. Device in accordance with Claim 9, characterised in that the spiral roller (14) is arranged essentially horizontally, and the feed opening (16) Is arranged in such a way that the wood (18) can be fed onto the spiral roller (14) from above.
  11. Device in accordance with one of Claims 9 or 10, characterised by elements (19) provided on the cutting device (13) by means of which the already partly-cut wood can be acted upon such that the part which has not yet been cut breaks.
  12. Device in accordance with Claim 12, characterised in that the elements (19) are in the form of wedges or similar extending between the winding and the base of the roller which extend in the direction of motion of the spiral roller (14).
  13. Device in accordance with one of Claims 9 to 12, characterised in that the height of the winding of the spiral roller (14) is selected in accordance with the maximum strength of the wood to be cut.
  14. Device in accordance with one of the previous claims, characterised by at least two feed openings (5, 5a) arranged one after the other in the direction of rotation of the cutting device (13).
  15. Device in accordance with one of the previous claims, characterised in that the angle is selected as a function of the number of windings and/or of the clearance between the windings and/or the height of the cutter or the winding respectively.
EP97101254A 1996-02-29 1997-01-28 Device for cutting wood Expired - Lifetime EP0792728B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19607558A DE19607558C1 (en) 1996-02-29 1996-02-29 Arrangement for cutting up wood into short sections
DE19607558 1996-02-29

Publications (3)

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EP0792728A2 EP0792728A2 (en) 1997-09-03
EP0792728A3 EP0792728A3 (en) 1998-03-04
EP0792728B1 true EP0792728B1 (en) 2001-10-31

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DE (2) DE19607558C1 (en)

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FI116208B (en) 2003-03-21 2005-10-14 Kauko Rautio cutter head
IT1393299B1 (en) * 2009-03-23 2012-04-20 Naldoni MACHINE FOR THE PRODUCTION OF WOODEN BOOTS.
CN107639688A (en) * 2017-10-16 2018-01-30 苏州市达而昌机械有限公司 A kind of timber decomposes platform
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EP0792728A3 (en) 1998-03-04
EP0792728A2 (en) 1997-09-03
DE59705124D1 (en) 2001-12-06
ATE207792T1 (en) 2001-11-15
DE19607558C1 (en) 1997-05-28

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