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WO2001019575A1 - Procede, dispositif et coupeuse a copeaux pour la production de panneaux definis tridimensionnels - Google Patents

Procede, dispositif et coupeuse a copeaux pour la production de panneaux definis tridimensionnels Download PDF

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Publication number
WO2001019575A1
WO2001019575A1 PCT/EP2000/008429 EP0008429W WO0119575A1 WO 2001019575 A1 WO2001019575 A1 WO 2001019575A1 EP 0008429 W EP0008429 W EP 0008429W WO 0119575 A1 WO0119575 A1 WO 0119575A1
Authority
WO
WIPO (PCT)
Prior art keywords
chipper
tree trunk
strands
axis
width
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.)
Ceased
Application number
PCT/EP2000/008429
Other languages
German (de)
English (en)
Inventor
Hans Dietz
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19945510A external-priority patent/DE19945510A1/de
Application filed by Individual filed Critical Individual
Priority to AU70007/00A priority Critical patent/AU7000700A/en
Publication of WO2001019575A1 publication Critical patent/WO2001019575A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/007—Combined with manufacturing a workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like

Definitions

  • the invention relates to methods for producing three-dimensionally defined beaches of a given width from a tree trunk or log, comprising the steps:
  • the invention further relates to devices for producing three-dimensionally defined beaches of a given width from a tree trunk or log, with a device for providing the tree trunk in predetermined areas with longitudinal cuts which are spaced apart from one another by the width of the beaches and with a chipper for cutting the beaches the areas.
  • the invention relates to a chipper for chipping wood, with a conical carrier and with a plurality of chipper knives arranged along a spiral line on the conical carrier, the chipper being rotatable about a first axis and the wood being able to be fed to the chipper along a second axis ,
  • a method, a device and a chipper of the type mentioned above are known from DE 195 04 030 CI.
  • a tree trunk is first fed to a series of knives by means of a transport device, which produce a plurality of mutually parallel longitudinal sections of predetermined depth in two opposite lateral edge areas of the tree trunk.
  • the tree trunk is then conveyed between two chipper devices in which these pre-cut edge areas are completely chipped into strands.
  • the chipper devices are provided with chipper knives which generate a beach with three-dimensionally defined dimensions by means of a main cutting edge and a secondary cutting edge.
  • a chipper is also used, in which the chipper knives are arranged along a spiral line on an outer, cone-shaped surface. The chipper can be rotated around an axis that is at a right angle to the direction of conveyance of the wood.
  • the invention has for its object to develop a method, a device and a chipper of the type mentioned in such a way that an essentially complete decomposition of the tree trunk into beaches is possible.
  • steps a) and b) are repeated at least once in areas lying further inside the tree trunk to essentially completely break down the tree trunk into beaches.
  • steps a) and b) are carried out for essentially completely breaking down the tree trunk into strands until a remainder of the tree trunk remains, the width of which is equal to the width of the beaches , and that the rest is broken down into beaches of the given width.
  • the object is achieved according to the invention in that at least one further device for making the longitudinal cuts and at least one further chipper are provided for essentially completely dismantling the tree trunk into strands, in order to move to areas located further inside the tree trunk make the longitudinal cuts and create the strands.
  • the object is achieved according to the invention in that a round trip is provided in the same processing station for essentially completely breaking down the tree trunk into beaches, in order to reclaim the tree trunk at its entrance after leaving the processing station, while continuing to do so Passing through the processing station, the longitudinal cuts are made and the strands are generated in areas located increasingly further inside the tree trunk.
  • the object is achieved according to the invention in that a further chipper is additionally provided in order to essentially completely break down a remaining trunk of the tree trunk with the predetermined width after stripping the strands from the regions.
  • the object is finally achieved according to the invention in that the carrier has an inner conical surface, that the first axis is directed essentially parallel to the second axis, that the chipper knives are arranged essentially parallel to the axis, and that Wood can be fed to the chipper in the direction of the inner conical surface.
  • steps a) and b) are repeated until a remainder of the tree trunk remains, the width of which is equal to the width of the beaches.
  • this remainder is essentially completely broken down into strands of this predetermined width.
  • areas of the tree trunk which are initially located on the outside are broken down into strands by making longitudinal cuts and subsequent machining, but this is done to a depth at which only a remainder remains, the width of which is equal to the width the beach is. This remainder can then be completely broken down into strands of the specified width.
  • the longitudinal cuts can be made in a manner known per se without cutting or machining, for example by scoring, by cutting (using blades or lasers) or by sawing.
  • the chipper according to the invention use is made of the feature known per se to arrange the chipper knives on the surface of a support defining a conical surface along a spiral line, but in contrast to the known chippers, the knives according to the invention are on the inside, i.e. on one internal tapered surface, the knives are aligned parallel to the taper axis, and the wood is fed to the chipper in this axis or parallel to the axis.
  • drum cutters are known in this connection, in which knives are also arranged on the inside of a surface and the chips are conveyed to the outside under the influence of centrifugal force through slots provided in the drum, these known cutters have a cylindrical shape and are therefore suitable for processing of a continuous wood that is to be processed successively in the conveying direction.
  • chipper knives freely cantilevered on their carrier, that is to say similarly to turbine blades in a turbine.
  • Figure 1 is a radial section through a tree trunk after performing a first processing step.
  • FIGS. 2-7 representations similar to FIG. 1, but to illustrate further processing steps
  • FIG. 8 shows a perspective view of a device for carrying out the method according to the invention
  • FIG. 9 shows a schematic side view of a device according to the invention with an internally tapered chipper
  • FIG. 10 shows a detail from FIG. 9 in a view rotated by 90 °
  • Fig. 11 is an extremely schematic front view of the chipper shown in Fig. 9; and Fig. 12 the chipper of Fig. 11 in a likewise highly schematic side view.
  • Fig. 1 10 denotes a tree trunk, generally speaking a log.
  • the tree trunk 10 has already been partially processed at the time shown in FIG. 1, so that a rest 10/1 of the tree trunk 10 has remained.
  • the processing according to FIG. 1 consists in that longitudinal slits or grooves 12a, 12b, 12c and 12d have been provided on two opposite sides of the tree trunk 10. These slots or grooves can be produced in a manner known per se without cutting or machining, for example by scoring or cutting or by sawing or by means of a laser or the like.
  • the depth of the slots 12a-12d is designated in FIG. 1 by a ⁇ and therefore extends to a first plane 14.
  • the depth a x is not important for the subsequent dimensioning of the beaches. It is determined individually in the individual case, depending on what the special features of the special processing method are, ie which tools are available, what type the wood is to be processed and what the dimensions of the tree trunk 10 are. Above all, the depth a ⁇ is expediently determined as an integral fraction of the diameter of the tree trunk 10 minus the width b, for the reasons that result from the following description.
  • FIG. 2 shows the situation after a further processing step has been carried out.
  • first areas 16 which lie outside the first level 14 have been removed.
  • the first areas 16 were removed by means of a chipper, as will be explained further below with the aid of FIG. 8 and as described in all details in the above-mentioned DE 195 04 030 CI, to which express reference is also made in general terms for further details becomes.
  • the first areas 16 were disassembled into first strands 18 during this machining process, a thickness d and a predetermined length of the first strands 18 being produced by suitable selection and adjustment of the chipping tool.
  • the width of the strands 18 is b, as already mentioned.
  • the beaches 18 are therefore defined three-dimensionally.
  • second slots 20a-20h are then introduced into the remaining 10/2 of the tree trunk 10, as shown in FIG. 3.
  • the procedure is essentially similar to that of FIG. 1, namely that the slots 20a-20h with a depth a 2 and a width b are attached to one another, so that a second plane 22 is defined on the bottom of the slots 20a-20h.
  • second strands 26 are now cut out in these areas 24, just as was already described above for FIG. 2.
  • the remaining 10/4 of the tree trunk 10 now become third slots 28a-28h introduced, as shown in Fig. 5.
  • the third slots 28a-28h again have a distance b and a depth a 3 from one another, as a result of which a third plane 30 is defined.
  • the depths a ⁇ r a 2 and a 3 can accordingly be determined in advance accordingly. You can make the depths a x -a 3 all the same size, for example, but you can also choose the depth a : somewhat smaller, because in the outermost edge region 16, due to the cylindrical surface of the tree trunk 10 present there, the relatively largest proportion of wooden parts when cutting the Strands is generated that does not have the full dimensions of the strands 18, that is to be treated as a reject.
  • FIG. 8 shows a device known in the form shown for producing three-dimensionally defined beaches of a predetermined width from a tree trunk.
  • a tree trunk 40 can be seen, in the middle of which there is a rest 40/1, which corresponds to the rest 10/2 in FIG. 2.
  • the areas located at the edge are designated 43. Longitudinal slots or grooves 45 can be seen in the areas 43.
  • a transport device for the tree trunk 40 is initially provided.
  • the tree trunk 40 is guided past cutting knives 51, which are provided on both sides in a staggered arrangement in order to make the longitudinal slots 45.
  • cutting knives 51 saws, scoring knives, lasers or the like can also be provided.
  • the tree trunk 40 Downstream of the cutting knives 51, the tree trunk 40 passes through two chippers 52, which are located on both sides of the tree trunk 40.
  • the chippers 52 are driven by means of a shaft 53, which is rotated about a horizontal axis 54, as indicated by an arrow 55.
  • the knife 60 has a main cutting edge 61 and a secondary cutting edge 62. Instead of a secondary cutting edge 62, a suitable scoring knife can also be used.
  • the knives 60 penetrate the areas 43 in the direction of an arrow 65, so that three-dimensionally defined beaches are cut there.
  • dash-dotted lines 70 it is now indicated that downstream of the cutting knife 51 and the chipper 52 there may be further such stations, through which the inner regions of the tree trunk 40 are first cut lengthwise and then broken down into strands. The depth of engagement of these further stations arranged downstream is staggered accordingly in the direction of the axis 54.
  • a last station present there consists only of chippers, which are either rotated by 90 ° with respect to chippers 52 in FIG. 8, i.e. are located above and below tree trunk 40 or the rest of tree trunk 40 still present there, or else The rest of the tree trunk 40 is rotated 90 ° beforehand. This is because, in this last step, the strands are cut in a direction rotated by 90 °, as explained above in relation to FIG. 7.
  • the tree trunk 40 would have to be returned to the entrance and the tools, ie the cutting knives 51 and the chipper 52, should be fed inwards so that the tree trunk 40 during the next pass is processed correspondingly further inside areas.
  • the cutting knives 51 could then be completely disengaged, so that the remainder (cf. FIG. 10/6 in FIG. 6) only passes through the two chippers 52.
  • the rest of the 10/6 would have to be rotated 90 ° beforehand.
  • FIG. 9 A device similar to that in FIG. 8 is shown at the top in FIG. 9, but the several chipper stages are shown one after the other with 52a, 52b and 52c, but for the sake of clarity the respective cutting, sawing or scoring units ( Cutting knife 51 in Fig. 8) are omitted.
  • FIG. 9 four cross-sectional representations on an enlarged scale show how a tree trunk 40 fed in from the left in FIG. 9 is made in cross-section after passing through the three chippers 52a, 52b, 52c. In terms of content, this corresponds to the representation according to FIG. 8.
  • the rest 40/4 now arrives at a support 80.
  • the support 80 comprises a vertical part 81 which, as the detailed view according to FIG. 10 shows in the rear view, the rest 40/4 on the side facing away from the viewer of FIG. 9 supported. A force acting on the rest 40/4 from the right (arrow 82) is thus absorbed.
  • a horizontal part 83 of the support 80 holds the rest 40/4 from below.
  • the horizontal part 83 can also be formed by an existing conveyor or the like, so it does not necessarily have to be part of the support 80.
  • the support 80 is located in the engagement area of an internal tapered chipper, designated overall by 86.
  • the chipper 86 is provided at its tapered end with a shaft 87 which defines an axis 88.
  • the chipper 86 can be rotated about the axis 88, as indicated by an arrow 89.
  • the chipper 86 has an imaginary inner conical surface 90 on which chipper knives are located, as will be explained with reference to FIGS. 11 and 12.
  • the rest 40/4 thus reaches the inner conical surface 90 at a sufficiently large distance d over its entire width and height.
  • steps 92 are attached in the rest 40/4, the rest 40/4 completely machined and opened in a manner to be described in this way the strands are generated, as indicated in FIG. 7 by reference numeral 36.
  • the shaft 87 can also be hollow, so that it is possible to rest the rest 40/4 with its central axis 91 at a short distance from or so. even to be fed along the axis 88 of the chipper 86. The remaining remainder can then be removed through the shaft 87, for example in the form of a roof batten or the like.
  • FIGS. 11 and 12 now show a front view (FIG. 11) and a side view (FIG. 12) of the chipper 86.
  • chipper knives 94/1 to 94 / n are directed parallel to axes 88 and 91 and are each provided with a flange 95 from which a chipper blade 96 projects freely in the manner of a turbine blade.
  • the flanges 95 of the chipper knife 94 are fastened on a spiral support 97 which runs along a spiral line 98 along the imaginary inner conical surface 90.
  • the surface 90 can also be designed as a structural component. In this case, the surface 90 in the area of the chipper knife 94 must be provided with corresponding openings for removing the beach.
  • the spiral line 98 runs through the circumference a total of three times, so that the conical spiral of the carrier 97, which can be seen particularly clearly in FIG. 12, is created.
  • the number of knives and the number of revolutions of the line 98 depend on the length of the knives in the direction of the axis 88 and on the thickness d of the beaches to be produced and can be easily calculated.
  • the wood generally speaking the tree trunk 40, is fed from the right, that is, into the opening of the inner conical surface 90.
  • the chipper knives 94 cut the rest 40/4 spirally, in longitudinal section (FIG. 9) in steps 92.
  • chipper 86 shown in FIGS. 9 to 12 can be used not only for the application example mentioned in the context of the present application, but also for other chipping tasks on logs.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Abstract

L'invention concerne un procédé et un dispositif servant à la fabrication de panneaux définis tridimensionnels (34) d'une largeur prédéterminée à partir d'une grume (10) ou d'un bois rond non écorcé. Des coupes longitudinales (28) séparées les unes des autres de la largeur (b) des panneaux (34) sont pratiquées dans la grume (10) en des domaines prédéterminés. Les panneaux (34) sont découpés à partir de ces domaines. En vue de subdiviser sensiblement en totalité la grume (10) en panneaux (34), ces étapes sont répétées au moins une fois en des domaines (32) se rapprochant progressivement de l'intérieur de la grume (10).
PCT/EP2000/008429 1999-09-14 2000-08-30 Procede, dispositif et coupeuse a copeaux pour la production de panneaux definis tridimensionnels Ceased WO2001019575A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70007/00A AU7000700A (en) 1999-09-14 2000-08-30 Method, device and wood-chipping machine for producing three-dimensionally defined strands

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19943988 1999-09-14
DE19943988.5 1999-09-14
DE19945510A DE19945510A1 (de) 1999-09-14 1999-09-23 Verfahren und Vorrichtung zum Herstellen von dreidimensional definierten Strands, sowie Zerspaner
DE19945510.4 1999-09-23

Publications (1)

Publication Number Publication Date
WO2001019575A1 true WO2001019575A1 (fr) 2001-03-22

Family

ID=26054952

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Application Number Title Priority Date Filing Date
PCT/EP2000/008429 Ceased WO2001019575A1 (fr) 1999-09-14 2000-08-30 Procede, dispositif et coupeuse a copeaux pour la production de panneaux definis tridimensionnels

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AU (1) AU7000700A (fr)
WO (1) WO2001019575A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304970A (en) * 1964-03-03 1967-02-21 Dominion Tar & Chemical Co Axial feed waferizer
US3407854A (en) * 1966-03-23 1968-10-29 Black Clawson Co Wood chipping apparatus
DE3304206A1 (de) * 1982-02-12 1983-09-08 Karl-Erik 80228 Gävle Jonsson Schneidwerkzeug und halter
DE4244310C1 (de) * 1992-12-28 1993-10-28 Linck Masch Gatterlinck Verfahren und Anlage zum schneidenden Aufteilen eines Kantholzes in Bretter vorbestimmter Dicke
DE19504030C1 (de) * 1995-02-08 1996-07-04 Dietz Hans Prof Dr Verfahren und Vorrichtung zum Herstellen von Strands
EP0770461A2 (fr) * 1995-10-24 1997-05-02 Söderhamns Verkstäder Ab Procédé et installation pour le découpage de troncs d'arbres en produits en bois
EP0891846A2 (fr) * 1997-07-18 1999-01-20 Holzindustrie Preding Gesellschaft m.b.H. Dispositif pour la fabrication de bois équarri
DE19726396C1 (de) * 1997-06-21 1999-02-25 Inter Wood Maschinen Vorrichtung zur Herstellung von schmalen Furnierstreifen
EP0914913A2 (fr) * 1997-11-04 1999-05-12 Holzindustrie Preding Gesellschaft m.b.H. Dispositif pour la fabrication de bois équarri à partir de troncs d'arbre

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304970A (en) * 1964-03-03 1967-02-21 Dominion Tar & Chemical Co Axial feed waferizer
US3407854A (en) * 1966-03-23 1968-10-29 Black Clawson Co Wood chipping apparatus
DE3304206A1 (de) * 1982-02-12 1983-09-08 Karl-Erik 80228 Gävle Jonsson Schneidwerkzeug und halter
DE4244310C1 (de) * 1992-12-28 1993-10-28 Linck Masch Gatterlinck Verfahren und Anlage zum schneidenden Aufteilen eines Kantholzes in Bretter vorbestimmter Dicke
DE19504030C1 (de) * 1995-02-08 1996-07-04 Dietz Hans Prof Dr Verfahren und Vorrichtung zum Herstellen von Strands
EP0770461A2 (fr) * 1995-10-24 1997-05-02 Söderhamns Verkstäder Ab Procédé et installation pour le découpage de troncs d'arbres en produits en bois
DE19726396C1 (de) * 1997-06-21 1999-02-25 Inter Wood Maschinen Vorrichtung zur Herstellung von schmalen Furnierstreifen
EP0891846A2 (fr) * 1997-07-18 1999-01-20 Holzindustrie Preding Gesellschaft m.b.H. Dispositif pour la fabrication de bois équarri
EP0914913A2 (fr) * 1997-11-04 1999-05-12 Holzindustrie Preding Gesellschaft m.b.H. Dispositif pour la fabrication de bois équarri à partir de troncs d'arbre

Also Published As

Publication number Publication date
AU7000700A (en) 2001-04-17

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