EP0920962B1 - Dispositif et procédé de traitement de troncs d'arbres - Google Patents

Dispositif et procédé de traitement de troncs d'arbres Download PDF

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Publication number
EP0920962B1
EP0920962B1 EP98850153A EP98850153A EP0920962B1 EP 0920962 B1 EP0920962 B1 EP 0920962B1 EP 98850153 A EP98850153 A EP 98850153A EP 98850153 A EP98850153 A EP 98850153A EP 0920962 B1 EP0920962 B1 EP 0920962B1
Authority
EP
European Patent Office
Prior art keywords
tool
log
working
saw
plane
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.)
Expired - Lifetime
Application number
EP98850153A
Other languages
German (de)
English (en)
Other versions
EP0920962A1 (fr
Inventor
Joachim Hultgren
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.)
ARIVISLANDA AB
Original Assignee
AriVislanda AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AriVislanda AB filed Critical AriVislanda AB
Publication of EP0920962A1 publication Critical patent/EP0920962A1/fr
Application granted granted Critical
Publication of EP0920962B1 publication Critical patent/EP0920962B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/20—Edge trimming saw blades or tools combined with means to disintegrate waste
    • 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
    • B27L11/007—Combined with manufacturing a workpiece

Definitions

  • the present invention refers to a device for working a timber log.
  • the invention also refers to a method of working a timber log.
  • the cutting edges are arranged to provide two plane parallel recesses in a log which is brought to pass the knives, whereafter a saw blade is provided to saw along a limiting surface of these recesses in such a manner that a sideboard is removed from the rest of the log.
  • edges of a log which is rectangulary shaped by saw cuts, are milled perpendicularly by means of cutting heads, which comprise cutting knives and a circular saw blade.
  • cutting heads which comprise cutting knives and a circular saw blade.
  • One of the surfaces of the milled portion is thereby evenly sawn.
  • the saw cuts are applied in essentially the planes of the second of the surfaces of the milled portion, which due to the influence of the cutting knives gets a wave-shaped appearance.
  • the waves are removed and all the sides of the product are evenly sawn.
  • the material milled away is to a large part chip, which is desirable since it may be used for the production of cellulose.
  • both of these known methods and devices result in the fact that the surface which is produced by the cutting knives along the longitudinal direction of the log is wave shaped.
  • the wave-shaped surface may be removed or evened by an accurate guiding of the saw blade along this wave-shaped surface. If, for any reason, the saw blade does not run exactly along said surface but leave it untouched along a portion of the log, this wave-shaped surface will appear on the board adjacent to the sideboard, on which a surface is defined by the sawing separation of the sideboard.
  • EP-A-775 558 discloses working of a timber log by means of a band saw, which has a saw band extending transversally through the log, i.e. the band saw is arranged to separate a sideboard from the log. After the separation of the sideboard, the sideboard is maintained in its original position by supporting elements, whereby the chipping out of the wane portion of the sideboard is performed on this separated sideboard.
  • US-A-4,848,427 discloses another method and apparatus for chipping out the wane portion of a timber log.
  • the chipping out takes place in two steps, which are performed with a respective combination working tool.
  • Each of these working tools comprises a saw blade and a chipping tool arranged around a common axis of rotation. Consequently, the solution presented in US 4,848,427 differs from the solution of the present invention in that no simple saw groove is obtained in the first working step.
  • US-A-4,848,427 describes a working method operating in an order differing from the working order of the present invention.
  • the first working step according to this prior art includes simultaneous chipping out and sawing a groove. The remaining part of said groove extends in a plane perpendicular to the saw plane for separating a sideboard, but not in a plane being parallel to and substantially coinciding with the following sawing step for separating the sideboard.
  • An object of the invention is to provide a device for chip cutting separation of timber logs, wherein the device enables the achievement of a maximum quantity of chip in connection with the separation of portions comprising wanes, at the same time as the working tool used is prevented from causing the unwanted surface defect of the boards defined by the chip cutting working.
  • the chip cutting working tools must not leave any wave-shaped surface which in turn is to be finished by means of an successive saw blade or any further working member.
  • the rotation axis of the working tool is arranged to extend in a plane being essentially parallel to the extension planes of said first and second surfaces and a rotation axis of the working tool is arranged to extend essentially perpendicular to said transport direction.
  • the device comprises a finishing tool, arranged to finish a third surface of the log, which surface forms an angle to said second surface and together therewith defines the portion which has been removed from the log. Thanks to the finishing tool, it is prevented that the third surface, which in this case is intended to form a narrow side surface of a sideboard, becomes rough in connection with the chip cutting working.
  • the finishing tool is provided on the working tool and comprises a cutting edge extending in a plane being essentially perpendicular to said rotation surface.
  • the saw tool comprises a rotary saw blade, and the saw blade and the working tool are arranged in such a manner that their outer peripheries overlap each other in said log transport direction.
  • the difficulty of positioning the working tool accurately is reduced in such a manner that the working tool will not engage said second surface, in particular when the logs to be worked are curved.
  • the device comprises four working tools and saw tools, arranged to remove four separate portions of the log, which each comprises a respective wane. In such a manner, it is possible to remove all four wanes of the log in parallel and at a location along a path along which the log is transported.
  • a further object of the invention is to provide a method, which enables the removal of a portion of a log comprising a wane without causing, by the chip cutting working tool, any wave-shaped surface of the log, which later on need to be finished by means of any further working tool, such as a saw blade, for instance.
  • a third surface of the log is finished by means of a finishing tool, wherein said third surface forms an angle to said second surface and together therewith form a limitation of the log to the portion being removed.
  • Fig 1 and 2 are schematical views of an embodiment of the device according to the invention, which comprises a combination tool 1, having six cutting knives and a saw blade of a type known per se, by which side portions having a curved outer surface of the log is removed in a conventional manner.
  • the device comprises four such combination tools 1, arranged to work the log in such a manner that it receives an essentially rectangular cross-section with the exception that the curved corners, containing wanes, are left. This also appears from Fig 5 which schematically discloses how the log is worked initially.
  • the device also comprises a number of saw tools 2, one of which is disclosed in Fig 1 and which are arranged to saw grooves in the log along the longitudinal direction thereof when it is transported passing the saw tools 2 in a transport direction x.
  • the saw tool 2 comprises a blade 16.
  • the blades 16 of the saw tools 2 are displaced towards the centre of the log in relation to a respective adjacent, plane parallel saw blade of the combination tools 1 by such a distance that the wane or a portion comprising the respective wane is comprised therebetween.
  • the saw blade of the combination tool 1 and/or the saw tool 2 is displaceable in a direction 4 which is perpendicular to said transport direction x in such a manner that the distance therebetween maybe adjusted dependent on the thickness of the log.
  • the saw tools 2 are provided in pairs, the blades 16 of which are arranged in essentially the same plane.
  • One such pair is disclosed in Fig 2, and at least one of, preferably both the saw tools 2 is displaceably provided in a direction x which is perpendicular to the transport direction z and to the transverse direction y.
  • the depth of the groove sawn by the saw tool 2 may be adapted to different log dimensions.
  • the saw tool 16 is arranged to provide a groove 10, or a channel, having a first surface 7, a second surface 8, which is essentially parallel to the first surface 7, and a bottom 17 which extends between and connects the first surface 7 and the second surface 8 to each other.
  • the device Immediately after the saw tools 2, seen in the transport direction x, the device comprises a working tool 3.
  • the rotation axis r of the working tool 3 forms an angle to the rotation axis r of the saw tool 2. In the embodiment disclose said angle is essentially perpendicular. Thereby, the rotation axis r of the working tool 3 extends essentially in the previously defined direction z.
  • the working tool 3 comprises an element defining an essentially plane disc 4 on which chip cutting knives 5 are provided.
  • the knives 5 are provided to project from the outer periphery of the disc 4. They comprise an edge 6 which, during the rotation of the tool 3, is arranged to define an imaginary rotation surface touching a plane being essentially parallel to the first and second surfaces 7, 8 respectively, formed at a log 9 when the saw tool 2 produces the groove 10.
  • the extension of said rotation surface appears by the dashed line 11 in Fig 3.
  • the working tool 3 is arranged to be positioned in such a manner that said rotation surface 11 extends right to the first surface 7 but not to the second surface 8. Thereby, it is avoided that the cutting edge 6 engages the second surface 8 and produces a wave formation thereat.
  • the sideboard 9' which later on is to be separated from the log 9, will form a fixed part of the log 9 during the whole chip cutting working.
  • the device comprises finishing tools 12, which are provided on the working tool 3 and comprise a respective cutting edge 13 extending in a plane being essential perpendicular to said rotation surface 11, i.e. parallel to the extension plane of the disc 3.
  • the finishing tool 12 is arranged to work a third surface 15 of the log 9, which is perpendicular to the second surface 8 of the latter and together therewith encloses and defines the portion 14 having the wane.
  • the third surface 15 is indicated in Fig 5 and 6 and appears more clearly from Fig 8.
  • the working tool 3, including the finishing tool 12, is of a known type per se. In particular, it is the positioning thereof in relation to the saw tool 2 which is the interest of the invention.
  • Figs 5-7 disclose how a log is stepwise worked when it is forced to pass combination tools 1, saw tools 2 and working tools 3 along a path.
  • combination tools 1, which are plane parallel to the most adjacent saw tool 2 have been disclosed in Fig 1 and 2.
  • combination tools 1, provided perpendicularly thereto, are provided preferably upstream in the transport direction x.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Sawing (AREA)

Claims (15)

  1. Dispositif pour traiter un tronc d'arbre (9), comprenant
    - un outil de traitement rotatif, d'ébrèchement (3) adapté pour enlever une partie flache (14) d'un tronc (9) par traitement par ébrèchement, et
    - un outil de type scie (2) disposé pour être situé avant l'outil de traitement (3) observé dans la direction de transport de tronc (x),
    dans lequel ledit outil de type scie (2) est disposé pour scier une rainure (10) le long de la direction longitudinale du tronc (9), avec ladite rainure présentant une première surface (7) de ladite partie, une seconde surface (8) correspondante opposée du tronc (9) et un fond (17) s'étendant entre la première surface (7) et la seconde surface (8), et
    dans lequel ledit outil de traitement (3) comprend un rebord (6), disposé pour définir durant la rotation de l'outil (3) une surface de rotation imaginaire (11) touchant un plan qui est essentiellement parallèle aux plans d'extension desdites première (7) et seconde (8) surfaces, et disposé pour enlever ladite partie flache (14) en ébréchant sans engager ladite seconde surface (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'axe rotation de l'axe de l'outil de traitement (3) est disposé pour s'étendre dans un plan qui est essentiellement parallèle aux plans d'extension de desdites première (7) et seconde (8) surfaces.
  3. Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que l'axe de rotation de l'outil de traitement (3) est disposé pour s'étendre essentiellement perpendiculairement à ladite direction de transport (x).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit outil de type scie (2) est prévu pour tourner autour d'un axe de rotation et en ce que l'axe de rotation de l'outil de traitement (3) forme un angle avec l'axe de rotation de l'outil de type scie (2).
  5. Dispositif selon la revendication 4, caractérisé en ce que l'axe de rotation de l'outil de traitement (3) est essentiellement perpendiculaire à l'axe de rotation de l'outil de type scie (2).
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comprend un outil de finition (5), disposer pour achever une troisième surface (15) du tronc (9), cette surface (15) forme un angle avec ladite seconde surface (8) et ensemble définissent la partie (14) qui est enlevée du tronc (9).
  7. Dispositif selon la revendication 6, caractérisé en ce que l'outil de finition (12) est prévu sur l'outil de traitement (3) et en ce qu'il définit un rebord de coupe (13) s'étendant dans un plan qui est essentiellement perpendiculaire à ladite surface de rotation (11).
  8. Dispositif selon les revendications 6 ou 7, caractérisé en ce que l'outil de traitement (3) comprend un élément définissant un disque essentiellement plan (4), afin que les plans d'extension de la surface de rotation imaginaire (11) soient essentiellement perpendiculaires au plan d'extension du disque (4), et en ce que le rebord de coupe (13) de l'outil de finition (12) s'étend dans un plan qui est essentiellement parallèle au plan d'extension du disque (4).
  9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que ledit outil de type scie (2) comprend une lame de type scie en rotation (16) et en ce que cette lame de type scie (16) et l'outil de traitement (3) sont disposés de telle manière que leurs périphéries externes se chevauchent lorsque observé selon la direction de transport de tronc (x).
  10. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend quatre outils de traitement (3) et outils de type scie (2), disposés pour enlever quatre parties séparées (14) du tronc (9), chacune comprenant une flache respective.
  11. Procédé pour traiter un tronc d'arbre (9), dans lequel un outil de traitement rotatif, d'ébrèchement (3) est utilisé pour enlever une partie flache (14) du tronc en ébréchant et en ce qu'avant que l'ébrèchement soit effectué par ledit outil de traitement (3),
    - un outil de type scie (2) est utilisé pour scier une rainure (10) le long de la direction longitudinale du tronc (9), avec ladite rainure présentant une première surface (7) de ladite partie (14), une seconde surface (8) correspondante, opposée du tronc (9) et un fond (17) s'étendant entre la première surface (7) et la seconde surface (8), et en ce que
    - ledit outil de traitement (3) comprend un rebord (6) qui défini, durant la rotation de l'outil, une surface de rotation imaginaire (11) qui touche un plan qui est essentiellement parallèle aux plans d'extension desdites première (7) et seconde (8) surfaces,
    afin que la partie flache (14) soit enlevée par ébrèchement sans engager ladite seconde surface (8).
  12. Procédé selon la revendication 11, caractérisé en ce qu'une troisième surface (15) du tronc (9) est achevée au moyen d'un outil de finition (12), dans lequel ladite troisième surface (15) forme un angle avec ladite seconde surface (8) et ensemble formeront une limite du tronc (9) contre la partie (14) qui est enlevée.
  13. Procédé selon l'une quelconque des revendications 11 et 12, caractérisé en ce que le rebord de coupe (13) de l'outil de finition (12) est positionné de telle manière qu'il s'étend dans un plan qui est essentiellement perpendiculaire aux plans d'extension de ladite surface de rotation (11), et est déplacé pour fournir ladite finition.
  14. Procédé selon l'une quelconque des revendications 11 à 13, caractérisé en ce que quatre parties séparée du tronc (9), chacune comprenant une flache respective qui est essentiellement et de manière simultanée enlevée ledit dit traitement par ébrèchement et sciage.
  15. Procédé selon l'une quelconque des revendications 11 à 14, caractérisé en ce qu'il comprend une alimentation essentiellement continue de tronc (9) le long d'un chemin de passage desdits outil de type scie (2) et outil de traitement (3).
EP98850153A 1997-10-10 1998-10-08 Dispositif et procédé de traitement de troncs d'arbres Expired - Lifetime EP0920962B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703695A SE514304C2 (sv) 1997-10-10 1997-10-10 Anordning och förfarande för bearbetning av en timmerstock
SE9703695 1997-10-10

Publications (2)

Publication Number Publication Date
EP0920962A1 EP0920962A1 (fr) 1999-06-09
EP0920962B1 true EP0920962B1 (fr) 2003-01-29

Family

ID=20408564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98850153A Expired - Lifetime EP0920962B1 (fr) 1997-10-10 1998-10-08 Dispositif et procédé de traitement de troncs d'arbres

Country Status (4)

Country Link
EP (1) EP0920962B1 (fr)
AT (1) ATE231774T1 (fr)
DE (2) DE920962T1 (fr)
SE (1) SE514304C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19829112C1 (de) 1998-06-30 2000-03-30 Esterer Wd Gmbh & Co Hackschnitzel, Verfahren und Vorrichtung zum Erzeugen eines Hackschnitzels sowie zum Profilieren eines Baumstammes und deren Verwendungen
DE19960319C1 (de) * 1999-12-15 2001-07-26 Dietz Hans Vorrichtung zum Erzeugen eines Hackschnitzels sowie Vorrichtung zum Profilieren eines Baumstammes
DE102004051933A1 (de) * 2004-10-25 2006-05-04 Gebrüder Linck Maschinenfabrik "Gatterlinck" GmbH & Co KG Vorrichtung und Verfahren zum Profilieren von Baumstämmen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI54772C (fi) * 1977-09-27 1979-03-12 Ahlstroem Oy Foerfarande och anordning foer kantning av braede
DE2918622C2 (de) * 1979-05-09 1981-11-19 Gebrüder Linck Maschinenfabrik und Eisengießerei Gatterlinck, 7602 Oberkirch Verfahren und Vorrichtung zur spanenden Zerlegung von Baumstämmen in allseitig bearbeitete Holzerzeugnisse
DE2928949C2 (de) * 1979-07-18 1981-10-01 Gebrüder Linck Maschinenfabrik und Eisengießerei Gatterlinck, 7602 Oberkirch Verfahren und Vorrichtung zur spanenden Zerlegung von Baumstämmen in allseitig bearbeitete Holzerzeugnisse
US4415767A (en) * 1981-10-19 1983-11-15 Votan Method and apparatus for speech recognition and reproduction
DE3514892C1 (de) * 1985-04-25 1986-08-07 Wurster u. Dietz GmbH u. Co Maschinenfabrik, 7400 Tübingen Verfahren und Vorrichtung zum Zerspanen von Holz, insbesondere zur spanenden Zerlegung von mit Baukanten versehenen Baumstämmen
DE3702890A1 (de) * 1986-02-27 1987-09-03 Linck Masch Gatterlinck Verfahren und vorrichtung zur spanenden zerlegung von baumstaemmen in allseitig bearbeitete holzerzeugnisse mittels profilzerspanung
SE470378B (sv) * 1991-06-17 1994-02-07 Ari Ab Sätt och anordning för sönderdelning av stock till bräder och plank
DE29521324U1 (de) * 1994-06-08 1997-06-05 Strojcad S R O Vorrichtung zum Schneiden

Also Published As

Publication number Publication date
ATE231774T1 (de) 2003-02-15
SE9703695L (sv) 1999-04-11
SE514304C2 (sv) 2001-02-05
EP0920962A1 (fr) 1999-06-09
DE69811045T2 (de) 2003-11-20
DE69811045D1 (de) 2003-03-06
SE9703695D0 (sv) 1997-10-10
DE920962T1 (de) 1999-11-04

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