EP1046480B1 - Dispositif pour la découpe de troncs d'arbres utlisant des scies circulaires montées à angle droit et station de sciage associée - Google Patents

Dispositif pour la découpe de troncs d'arbres utlisant des scies circulaires montées à angle droit et station de sciage associée Download PDF

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Publication number
EP1046480B1
EP1046480B1 EP00108393A EP00108393A EP1046480B1 EP 1046480 B1 EP1046480 B1 EP 1046480B1 EP 00108393 A EP00108393 A EP 00108393A EP 00108393 A EP00108393 A EP 00108393A EP 1046480 B1 EP1046480 B1 EP 1046480B1
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EP
European Patent Office
Prior art keywords
log
saw
station
circular
sawing station
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
EP00108393A
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German (de)
English (en)
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EP1046480A2 (fr
EP1046480A3 (fr
Inventor
Edeltraud Schwaiger
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.)
Esterer WD GmbH and Co
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Esterer WD GmbH and Co
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Filing date
Publication date
Priority claimed from DE19927742A external-priority patent/DE19927742C1/de
Application filed by Esterer WD GmbH and Co filed Critical Esterer WD GmbH and Co
Publication of EP1046480A2 publication Critical patent/EP1046480A2/fr
Publication of EP1046480A3 publication Critical patent/EP1046480A3/fr
Application granted granted Critical
Publication of EP1046480B1 publication Critical patent/EP1046480B1/fr
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    • 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
    • B27B7/00—Sawing machines working with circular saw blades, specially designed for length sawing of trunks
    • B27B7/04—Sawing machines working with circular saw blades, specially designed for length sawing of trunks by making use of a plurality of circular saws mounted on a single spindle; Arrangements for adjusting the mutual distances
    • 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
    • B27B7/00—Sawing machines working with circular saw blades, specially designed for length sawing of trunks
    • B27B7/02—Sawing machines working with circular saw blades, specially designed for length sawing of trunks by making use of circular saws mounted substantially at right angles, e.g. vertically and horizontally

Definitions

  • the invention relates to a device for cutting logs or Tree trunk parts in one cut with several non-parallel cutting planes, in particular in a quarter cut, and a sawing station for use in such a device.
  • a pattern that is particularly advantageous with regard to the location of the annual rings is the So-called neighborhood section, the sectional view of which is shown in FIG. 1.
  • the tree trunk is first quartered and then cut by the alternately cut planks on both straight surfaces of the Baumstarnmviertel.
  • the Numbers on the respective cutting lines in FIG. 1 indicate the sequence of the cuts.
  • WO-A-96/01174 describes a sawing station for separating planks from a tree trunk known, wherein several circular saws are provided for the sawing station. Two circular saws are spaced apart and each include a saw blade, which Saw blades lie in a common horizontal cutting plane. Two more circular saws each have several coaxially arranged saw blades, the cutting planes of which are perpendicular to horizontal cutting plane of the first-mentioned circular saw.
  • FR-A-2,696,122 discloses a sawing station with two saws, each of which cuts a screed and are arranged offset in the conveying direction of the tree trunk.
  • the cutting planes the saws can be arranged at a 90 ° angle to one another.
  • a sawing station and a corresponding device for Disassembly of logs to provide a neighborhood cut and allow related patterns to be carried out more efficiently.
  • This object is achieved according to the invention by a sawing station according to claim 1 or a device for disassembling Tree trunks or tree trunk parts solved according to claim 13.
  • Advantageous embodiments are specified in the subclaims.
  • the invention proposes for the first time in a sawing station
  • a sawing station Use circular saws whose cutting planes, i.e. the planes of the saw blades, are one do not include a vanishing angle, namely an angle of 90 °, which is a quarter cut allows.
  • the circular saws are arranged so that those in the tree trunk Connect the cut surfaces generated so that the tree trunk in the sawing station can be edited simultaneously on two adjacent sides and at one pass through the sawing station result in at least two planks, which are of different sizes Sides of the tree trunk have been severed.
  • the circular saws are in quick succession arranged so that on the one hand both saws work the tree trunk part at the same time can and on the other hand the saw blades of the two circular saws have a sufficient safety distance have so that they do not come into contact with each other.
  • the two circular saws are each equipped with a plurality of saw blades, so that tree quarters with a smaller width in a single saw cut in the quarter cut can be disassembled.
  • the saw blades advantageously have a different one Diameter, which corresponds to the decreasing plank width for the quarter cut (referring to FIG. 1 are, for example, the planks produced with the cuts 1 to 4 are much wider than those cuts that are created with the cuts 14 to 19 become).
  • they are preferably concentric with one another and corresponding to those provided Screed thickness spaced several saw blades arranged, the diameter of which in the direction away from a stop for the tree part decreases.
  • a hollow shaft arrangement is preferred in which at least some of the saw blades is arranged on hollow shafts that receive another shaft in their interior.
  • the various shafts are advantageously displaceable relative to one another, so that the distance between the saw blades and thus also the cutting thickness can be changed.
  • Separate Saw blades can be exchangeable to allow different cutting thicknesses.
  • one or more hollow shafts in a hollow shaft receiving them is limited in a plane perpendicular to the shaft axis are displaceable by the distance of the edges of the saw blades in the plane perpendicular to To be able to adapt the shaft axis to a changed screed thickness in a quarter cut.
  • each shaft that can be moved transversely to the axial direction has its own relocatable shaft Has drive or, which is preferred, via a transmission with a common drive connected, which allows the shafts to be displaced perpendicular to the axial direction, for example a worm gear, a gear with a telescopic rod or a variable-length converter cylinder or the like.
  • a movable stop can be provided.
  • the shaft arrangement a circular saw altogether out of and into the machining area can be shifted in a controlled manner so that by pushing in or pulling out the Shaft arrangement the number of saw blades, which protrudes into the machining area, varies can be. This makes it possible to easily connect the saw station to different ones Adjust part thicknesses that require a different number of cuts.
  • the saw station according to the invention can, on the one hand, be used advantageously in a Find the sawing street where the sawing station is in the conveying direction after further sawing stations is arranged, which cut planks on the two sides to be processed. You can one or more other sawing stations as described above. According to the invention, however, a saw station as described above is also provided after a row of the tree trunk or the tree trunk part only on one side Arrange processing saw stations that the tree trunk or the tree trunk part Work on different pages one after the other, preferably alternately. in principle is also conceivable, the saw station according to the invention in the forward and return in one Planing technique "as described above, i.e. the log or that Tree trunk part is driven through the sawing station and then in the opposite direction moved back again. Because of the - advantageously mutually perpendicular - The arrangement of the circular saws eliminates the time-consuming turning after each sawing operation.
  • the sawmill according to the embodiment shown in FIG. 2 is a sawmill for Disassembling a tree trunk in a quarter cut and has a log task 1, one Trunk reducer 3, a debarker 5, a turning device 7, a first log band saw 13, a second block band saw 21 and a sawing road 29.
  • the log load 1, the trunk reducer 3 and the debarker 5 are conventional Wise designed.
  • the logs are lifted with a gantry crane or abandoned directly from a truck and conveyed to the trunk reducer 3, which is strong woody, i.e. strongly conical trunks reduced to a size to be processed. After that the possibly reduced tree trunk is debarked in debarker 5.
  • the tree trunk is then guided to a turning device 7. There is the trunk qualitatively assessed and rotated so that zones of poor or good wood quality are possible exclusively in one of the four quadrants formed by the vertical and horizontal lie.
  • the tree trunk After the tree trunk is aligned accordingly, it is placed over a suitable one Conveyor (not shown) to the vertical band saw 13, which the Tree trunk through a vertical cut essentially through the center in two Split stem halves.
  • the two halves of the trunk are now a longitudinal conveyor 17 to a cross conveyor 19 promoted, which separated the two trunk halves and a second vertical log band saw 21 feeds, while the trunk halves are oriented so that the Cut area of the previous cut is parallel to the horizontal.
  • the block band saw 21 divides now by another vertical cut each of the two halves of the trunk in two Trunk area.
  • the strge pieces 29 consists of a central conveyor lane 31, on the sides of which are arranged alternating band saws TA 1 , TA 2 and TB 1 , TB 2 .
  • the band saws TA 1 , TA 2 and TB 1 , TB 2 each separate a screed from a supplied log section, whereby the log quarter is tipped between the sawing stations, so that the band saws TA 1 and TA 2 on the one hand and the band saw TB 1 and TB 2 on the other hand work the tree trunk quarter alternately on the two straight sides.
  • the band saws are followed in the conveying direction by a circular saw station 33, the structure of which is shown schematically in FIGS. 3 and 4.
  • the circular saw station 33 consists of two identical circular saws K 1 and K 2 with mutually perpendicular cutting planes, each circular saw K 1 and K 2 having a plurality of saw blades, four in the case of the present exemplary embodiment, which are arranged in a hollow shaft arrangement with shafts arranged one inside the other , which in the case of the circular saw K 1 are designated 35 1 , 35 2 , 35 3 and 35 4 (cf. FIG. 4).
  • the diameter of the saw blades decreases towards the free end of the saws according to the pattern of the quarter cut.
  • Hollow shaft circular saws for a cut with parallel cutting planes are generally known.
  • the saws K 1 and K 2 are therefore not described in detail.
  • the saw blades themselves are not shown, but only the respective cutting lines S1, S2, S3, S4 or S5, S6, S7 and S8.
  • the circular saws K 1 and K 2 are slightly spaced apart from one another in the conveying direction, so that the saw blades do not come into contact with one another.
  • the diameters of the individual saw blades are selected so that the saw lines S1, S2, S3 and S4 can extend essentially up to the corresponding saw lines S5, S6, S7 and S8 according to the pattern of the quarter cut.
  • the circular saws K 1 and K 2 each interact with a displaceable stop (not shown), the stop line A1 or A2 of which is indicated in FIG.
  • the shafts 35 2 and 35 3 are axially displaceable relative to one another and with respect to the shaft 35 1 , while the shaft 35 4 is rigid with respect to the shaft 35 3 . Accordingly, the distance between the cutting lines S1 and S2 or S2 and S3 can be varied and thus set to a desired cutting thickness.
  • the distance of the cutting line S 1 from the stop line A1 can be varied by adjusting the stop (not shown) assigned to the circular saw K 1 . The same applies to the distance between A2 and S5 with saw K 2 .
  • the (variable) thickness of the first screed defined by the distance between S1 and A1
  • the thickness of the second and third screed can vary between 30 and 50 mm between S1 and S2 or S2 and S3
  • the (Fixed) thickness of the fourth screed between S3 and S4 is approximately 30 mm.
  • this information like the selection of the displaceable shafts described above, is only exemplary.
  • all shafts or other shaft combinations can be variably axially displaceable relative to one another.
  • the circular saws K 1 and K 2 can be displaced overall in the respective axial direction R 1 or R 2 and can be wholly or partially moved out of the processing area, for example in such a way that only cuts along the lines S2 to S4 or S6 to S8 be carried out while the saw blades, which are intended for the cuts along the lines S1 and S5, lie outside the processing area. In this way, the number of cuts can be varied and the saw station can be set to different log diameters. It is preferably provided that the saws K 1 and K 2 can both be displaced in the directions R 1 and R 2 , that is to say both in the axial direction and perpendicularly thereto, in order to match the two saws with respect to the thickness of the screed.
  • the hollow shafts 35 2 to 35 4 can also be displaced from the concentric arrangement shown in FIGS. 3 and 4 into an eccentric position, so that in the event of an axial displacement of one of the hollow shafts of the saw K 1 in the direction R 1 , the a displacement of the crossing point of one or more of the cutting lines S1 to S4 with one of the cutting lines S5 to S8 causes the corresponding hollow shafts of the saw K 2 to be displaced relative to one another, likewise in the direction R 1 , into a position eccentric with respect to an outer hollow shaft, so that the sectional view shown in Fig. 3 is retained overall.
  • the shaft 35 2 can be axially displaced and the shaft, which defines the section line S6, can be displaced in the direction R 1 , perpendicular to its axial direction, into an eccentric position.
  • the third section thickness (S2 / S3) can be changed while maintaining the section of FIG. 3 by an axial displacement of the shaft 35 3 and a displacement of the corresponding shaft of the saw K 2 in the direction R 1 .
  • both circular saws K 1 and K 2 will be moved in the direction perpendicular to their axial direction (R 2 or R 1 ) or shift individual shafts in the corresponding direction to an eccentric position.
  • the saws K 1 and K 2 can also be moved in the direction R 1 or R 2 (or in both directions simultaneously) to change the thickness of a first screed.
  • planks are cut off in the band sawing stations TA 1 , TA 2 or TB 1 and TB 2 in accordance with the neighborhood cut.
  • the band sawing stations TA 1 , TA 2 or TB 1 and TB 2 are cut off in the band sawing stations TA 1 , TA 2 or TB 1 and TB 2 in accordance with the neighborhood cut.
  • the remaining wedge that remains after processing by these stations is then completely broken down by the circular saw station 33 in accordance with the neighborhood cut.
  • FIG. 5 shows a second embodiment of a tree cutting device according to the invention, in which the band saw stations TA 1 , TA 2 and TB 1 and TB 2 have been omitted and only a single circular saw station 33 is provided as described above.
  • the circular saw station 33 then disassembles the supplied tree quarter in a single operation in this execution form.
  • This embodiment is particularly suitable for logs with a smaller diameter.
  • the sawing station 33 can be set up in such a way that it works in the forward and return directions, so that the remaining wedge which remains in the sawing station 33 after a first machining operation is fed back to the sawing station 33 in the opposite direction, where it is further dismantled , and so on until the entire tree trunk quarter is disassembled.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Sawing (AREA)
  • Harvester Elements (AREA)

Claims (18)

  1. Poste de sciage destiné au tronçonnage de madriers de différents côtés adjacents d'un tronc d'arbre ou d'une partie de tronc d'arbre avec une zone de travail dans laquelle le tronc d'arbre ou la partie de tronc d'arbre est scié, avec au moins deux scies circulaires (K1, K2) destinées au tronçonnage d'un ou de plusieurs madriers du tronc d'arbre ou de la partie de tronc d'arbre, un plan de coupe de la première scie circulaire (K1) formant un angle non nul par rapport à un plan de coupe de la seconde scie circulaire (K2), caractérisé en ce que les scies circulaires (K1, K2) sont munies à chaque fois de plusieurs lames de scie destinées au tronçonnage simultané de plusieurs madriers et sont disposées de manière à ce qu'en un passage, plusieurs madriers sont tronçonnés au niveau de deux côtés perpendiculaires l'un par rapport à l'autre du tronc d'arbre ou de la partie de tronc d'arbre.
  2. Poste de sciage selon la revendication 1, caractérisé en ce que les deux scies circulaires (K1, K2) sont disposées en vue du traitement simultané du tronc d'arbre ou de la partie de tronc d'arbre.
  3. Poste de sciage selon la revendication 1 ou 2, caractérisé en ce qu'une des deux scies circulaires (K1, K2) est affectée à une butée déplaçable dans la direction perpendiculaire au plan de coupe et qui détermine l'épaisseur d'un madrier tronçonné conjointement avec une lame de scie de la scie circulaire affectée.
  4. Poste de sciage selon l'une. quelconque des revendications 1 à 3, caractérisé en ce que l'écartement relatif des lames de scie est modifiable les unes par rapport aux autres.
  5. Poste de sciage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le diamètre des lames de scie diminue dans la direction d'une butée pour le tronc d'arbre ou la partie de tronc d'arbre dans la zone de travail.
  6. Poste de sciage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le nombre de lames de scie qui se dressent dans la zone de travail est variable.
  7. Poste de sciage selon la revendication 6, caractérisé en ce que les agencements de lame de scie d'au moins une scie circulaire (K1) sont disposés dans leur ensemble de manière déplaçable axialement de telle manière que le nombre de lames de scie qui se dressent dans la zone de travail est variable par déplacement de l'ensemble des agencements de lame de scie.
  8. Poste de sciage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les nombreux madriers sont tronçonnés en un passage conformément à un sciage sur quartier au niveau de deux côtés perpendiculaires l'un par rapport à l'autre du tronc d'arbre ou de la partie de tronc d'arbre, les lames de scie de la scie circulaire étant disposées et arrangées de telle manière que l'épaisseur des madriers qui sont tronçonnés au niveau d'un des deux côtés du tronc d'arbre ou de la partie de tronc d'arbre ou au niveau des deux côtés est modifiable individuellement.
  9. Poste de sciage selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'au moins une scie circulaire (K1, K2) est une scie circulaire d'arbre creux qui présente plusieurs arbres logés les uns dans les autres (351, ..., 354) qui entraínent à chaque fois une ou plusieurs lames de scie.
  10. Poste de sciage selon la revendication 9, caractérisé en ce qu'au moins une partie des arbres (352, 353) peut être déplacée axialement par rapport à au moins un autre arbre (351) de telle manière que l'écartement entre au moins deux lames de scie est modifié.
  11. Poste de sciage selon l'une quelconque des revendications 1 à 10, caractérisé en ce que pour au moins une scie circulaire (K1, K2), un ou plusieurs des arbres (351, ..., 354) entraínent les lames de scie et peuvent être déplacés à partir d'une position concentrique en ce qui concerne un autre arbre dans une position excentrique et/ou à partir d'une position excentrique dans une autre position excentrique.
  12. Poste de sciage selon l'une quelconque des revendications 1 à 11, caractérisé en ce que pour la première scie circulaire (K1, K2), les lames de scie sont réglables les unes par rapport aux autres au moins en direction axiale et pour l'autre scie circulaire (K2, K1), les lames de scie sont déplaçables les unes par rapport aux autres au moins dans un plan en travers de la direction axiale de l'arbre moteur.
  13. Dispositif de découpage de troncs d'arbre et/ou de parties de tronc d'arbre conformément à un patron avec des plans d'intersection non parallèles, caractérisé par un poste de scies circulaires (33, 33') selon l'une quelconque des revendications 1 à 12 ainsi qu'un mécanisme de transport destiné à amener des tronc d'arbre et/ou des parties de tronc d'arbre au poste de scies circulaires (33, 33').
  14. Dispositif selon la revendication 13, caractérisé en ce qu'un dispositif pour diviser en quatre un tronc d'arbre est placé en amont du poste de sciage dans le sens de transport.
  15. Dispositif selon l'une quelconque des revendications 13 ou 14, caractérisé en ce qu'un ou plusieurs postes de sciage (TA1, TA2, TB1, TB2) en vue de produire des coupes dans des plans non parallèles dans le tronc d'arbre et/ou la partie de tronc d'arbre sont placés en amont du poste de scies circulaires (33, 33').
  16. Dispositif selon la revendication 13, caractérisé en ce que les postes placés en amont du poste de scies circulaires présentent des scies à ruban.
  17. Procédé de découpage d'un tronc d'arbre ou d'une partie de tronc d'arbre conformément à un patron avec des plans d'intersection non parallèles, caractérisé en ce que grâce à un poste de sciage selon l'une quelconque des revendications 1 à 12, des madriers sont tronçonnés du tronc d'arbre ou de la partie de tronc d'arbre et le coin restant est de nouveau amené au même poste de sciage en vue d'un nouveau découpage.
  18. Procédé selon la revendication 17, caractérisé en ce que le coin restant est de nouveau amené au poste de sciage en marche arrière en inversant le sens de transport.
EP00108393A 1999-04-23 2000-04-17 Dispositif pour la découpe de troncs d'arbres utlisant des scies circulaires montées à angle droit et station de sciage associée Expired - Lifetime EP1046480B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19918637 1999-04-23
DE19918637 1999-04-23
DE19927742A DE19927742C1 (de) 1999-04-23 1999-06-17 Vorrichtung zum Zerlegen von Baumstämmen in einem Quartierschnitt und zugehörige Sägestation
DE19927742 1999-06-17

Publications (3)

Publication Number Publication Date
EP1046480A2 EP1046480A2 (fr) 2000-10-25
EP1046480A3 EP1046480A3 (fr) 2001-10-10
EP1046480B1 true EP1046480B1 (fr) 2004-12-22

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EP00108393A Expired - Lifetime EP1046480B1 (fr) 1999-04-23 2000-04-17 Dispositif pour la découpe de troncs d'arbres utlisant des scies circulaires montées à angle droit et station de sciage associée

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EP (1) EP1046480B1 (fr)
AT (1) ATE285318T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016172763A1 (fr) * 2015-04-25 2016-11-03 Andrew Knorr Sciage parallèle radial

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE78836C (de) * F. E. STUHLMANN, Barmen-Wichlinghausen Holzwinkel- oder Packetleisten-Schneidemaschine
US3141482A (en) * 1961-07-19 1964-07-21 Sam K Arness Core mill
ATE31666T1 (de) * 1982-10-22 1988-01-15 Linck Masch Gatterlinck Kreissaege mit verstellbaren saegeblaettern.
ATE64885T1 (de) * 1988-03-11 1991-07-15 Ludwig Loesch Rundholz-radialschnittverfahren.
SE9200923L (sv) * 1991-03-27 1992-09-28 Risto Heikki Pitkaenen Foerfarande foer kvalitetssaagning av saagstockar
FR2709263B1 (fr) * 1993-08-27 1995-11-10 Cirad Ligne et procédé de sciage de bois sur quartier.
SK280288B6 (sk) * 1994-07-06 1999-11-08 Wep Trading Zariadenie na pozdĺžne spracovanie drevnej hmoty
DE19920546A1 (de) * 1999-05-05 2000-11-09 Esterer Wd Gmbh & Co Verfahren und Vorrichtung zum Zerlegen von Rundhölzern zu Brettern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016172763A1 (fr) * 2015-04-25 2016-11-03 Andrew Knorr Sciage parallèle radial

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ATE285318T1 (de) 2005-01-15
EP1046480A2 (fr) 2000-10-25
EP1046480A3 (fr) 2001-10-10

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