EP1237688B1 - Dispositif de production d'un copeau de bois - Google Patents

Dispositif de production d'un copeau de bois Download PDF

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Publication number
EP1237688B1
EP1237688B1 EP00985092A EP00985092A EP1237688B1 EP 1237688 B1 EP1237688 B1 EP 1237688B1 EP 00985092 A EP00985092 A EP 00985092A EP 00985092 A EP00985092 A EP 00985092A EP 1237688 B1 EP1237688 B1 EP 1237688B1
Authority
EP
European Patent Office
Prior art keywords
wood
saw blade
flake
circular saw
chips
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
EP00985092A
Other languages
German (de)
English (en)
Other versions
EP1237688A2 (fr
Inventor
Hans Dietz
Jürgen EDELMANN
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.)
Dietz Hans Prof Dr
Original Assignee
Dietz Hans Prof Dr
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 Dietz Hans Prof Dr filed Critical Dietz Hans Prof Dr
Priority to DK00985092T priority Critical patent/DK1237688T3/da
Publication of EP1237688A2 publication Critical patent/EP1237688A2/fr
Application granted granted Critical
Publication of EP1237688B1 publication Critical patent/EP1237688B1/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
    • 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 invention relates to a device for generating a in essential wedge-shaped wood chips, with one around a first horizontal axis rotating cutting tool for Removing the chips from the wood, so that the Wood chips a first, concave surface and a second, convex surface that has between them the wood chips limit, with the surfaces in an imaginary tip converge and the tip on one between the surfaces extending centerline around a midline section outside the wood chip, and with a second vertical axis rotatable circular saw blade to remove the Wood before cutting in the area where the surfaces converge in the imaginary peak.
  • Such a device is known from DE 3702 890-A.
  • Zerspanerwerkmaschinee It is well known in the art of woodworking Wood by means of so-called Zerspanerwerkmaschinee wholly or partly to machine.
  • the Zerspanerwerkmaschinee are usually rotating tools having cutting blades at their periphery.
  • the Zerspanerwerkmaschinee are usually arranged spatially fixed, and the wood to be cut or to be sawn guided in the axial direction of the wood on the Zerspanerkopf.
  • the wood chips produced have a wing-like shape with a substantially wedge-shaped cross-section.
  • the wood chips are on their two big ones Surfaces bounded by a concave or convex side, These pages are from a thick end of the woodchip too a thin end or in the cross-sectional view of a Lead tip in which the two surfaces tangentially tangent.
  • Wood chips are a valuable source material in various Industries. These include, on the one hand, the pulp industry, the paper industry, but also the manufacturers of Wood materials and so-called composite components, i.
  • wood chips are a specific classification.
  • Particularly preferred Wood chips of medium size because too big wood chips poorly processed and too small or too thin wood chips, in particular in the production of pulp, Paper, wood-based materials and composite components to losses or lead to no viable structures.
  • chips are either when completely machined of wood or even when partially removing wood generated.
  • Partial cutting of wood finds e.g. at the so-called Profiling of tree trunks instead.
  • Profiling of tree trunks By this one understands the All-sided processing of initially raw tree trunks to this to give a cross-sectional shape (profile) in which the profiled tree trunk by subsequent sawing in simple Way in boards and beams can be decomposed.
  • a corresponding Methods and a corresponding device are e.g. described in DE 29 28 949 A.
  • the Tree trunks are processed during profiling by means of so-called corner cutters, milling out corners of the tree trunk in the axial direction, so that before or after flattened on all sides Tree trunk receives a profile, in the so-called side boards can be sawed off.
  • Sense of this Measure is when trimming the previously bent side board so-called “equal-thickness chips”, ie chips, which in contrast to the so-called “ Kommas Georgnen” a substantially have constant thickness parallel to the wood fiber.
  • These "equal-thickness chips” are approximately parallelogram-shaped in cross-section, where the corner angle is about 45 ° (or 135 °), because the cutting plane of the chipper on the wood, as mentioned, at about 45 ° to the direction of movement of the side boards lies.
  • the invention is based on the object, Devices of the beginning further education to avoid the above-mentioned disadvantages.
  • wood chips should be produced in an economically optimal manner be generated whose shape as closely as possible Classes of wood chips corresponds to those of the processing Industry are paid the highest
  • Such a shortened wood chips has a significant higher economic value and can therefore in far be better processed.
  • the operator of a Sawmill can therefore with such shaped chips with a much higher economic yield during Expect the utilization of wood chips.
  • the circular saw blade is, unlike the device according to EP 775 558 A1, not according to the invention for separating a side board, but rather only to create a gap finite Depth.
  • the circular saw blade is preferably with a thickness of more than 5 formed to 6 mm thickness.
  • the circular saw blade continues preferably a riving knife, between the circular saw blade and the cutting tool is arranged.
  • 10 denotes a woodchip of conventional type.
  • the woodchip 10 has two sides or surfaces 12, 14 on, which are perpendicular to the plane and the essential Form surface of the wood chip 10.
  • the left in Fig. 1 Surface 12 is concave, and the right surface 14th convex.
  • the surfaces 12 and 14 run down in Fig. 1 in a tip 16 or edge tangentially together.
  • At the opposite end of the wood chip 10 is a preferably flat end face 18 recognizable.
  • the Wood chips 10 with a thick end 20 and a thin end 22nd
  • the economic value of the woodchip 10 can therefore be significantly increased when the thinner end 22 removed becomes.
  • the position of the parting plane 24 within the woodchip 10 ' can be determined in different ways. Here are before all economic considerations, i. the question, in which remaining shape of the chips 10 'the best offers economic yield.
  • the center line section 26a within the remaining wood chip 10 'with a length 1 1 and the imaginary center line section 26b outside the remaining wood chip 10', namely to the top 16, define with a length 1 2 , wherein the total length of the original woodchip 10 1 1 + 1 2 .
  • An optimal position of the parting plane 24 is then present, for example, when 1 2 between 40% and 100% of 1 1 .
  • Another definition is to define the thickness d of the remaining woodchip 10 'with eg between 2 and 10 mm in the transition of the convex surface 14 to an interface 28 along the parting plane 24.
  • the interface closes 28 with the center line 26 an acute angle ⁇ , the e.g. can be between 15 ° and 50 °.
  • the flat face 18 by cutting or sawing and the interface 28 generated by sawing in the axial direction are therefore each level and parallel to each other.
  • Fig. 3 is dash-dotted lines 30 of the substantially circular Radial section indicated by a tree trunk. Laterally on tree trunk 30 are the so-called rinds 32, i. forest edge-affected surface sections.
  • Fig. 4 shows this in a greatly enlarged scale again the Area of a corner 34 of the tree trunk 30.
  • a corner cutter 44 generally speaking rotating chipper tool used.
  • the corner cutter 44 is about a vertical axis 46 in the direction of arrow 48 rotatable.
  • the axis 46 extends to the longitudinal axis of the horizontal aligned tree trunk 30 vertically.
  • the corner cutter 44 is in a conventional manner of two Assembled tools, namely a chipper 50 and a Saw blade 52 or a corresponding number of planing knives.
  • the second edge surface 40 receives a relative high (sawn) surface quality, while the first edge surface 38 as a result of rotating with a rotational movement Slicer knife receives a wavy surface.
  • FIG. 5 shows a plan view of the arrangement according to FIG. 4. With an arrow 54 is the rotational movement of the vertical Axis 48 circumferential corner cutter 44 indicated. Its radius is denoted by r.
  • FIG. 5 shows on the Tree trunk 30 also has a flattened area 58, where previously through Side flattening removes the corresponding rind 32 has been.
  • the flattened region 58 is characterized by an axially extending Transition line 60 from the remaining woodland area 62 separated, in which the corner 34 by means of the corner cutter 44 is to be worked out.
  • Fig. 6 first, the orientation of the axis 46 'of the corner cutter 44 changed. This extends according to the invention horizontally. Further is in front of the peripheral corner cutter 44 a circular saw blade 70th arranged, which rotates about a vertical axis 72, as with an arrow 74 indicated. The axis 72 is perpendicular to Longitudinal axis of the turn horizontally aligned tree trunk 30. The circular saw blade 70 thus saws a horizontal gap 76 finite depth d (FIG. 7B) along the transition line 60.
  • the circular saw blade 70 typically has a thickness of more than 5 mm, preferably 6 mm and more, so that the gap 76 accordingly wide, at any rate, significantly wider than in the case a band saw.
  • the circular saw blade 70 may, depending on the individual case also be provided with extra-wide teeth.
  • a riving knife 78 follow, which in axial direction ends where the engagement area of the corner cutter 44 begins.
  • the circular saw blade 70 so far only is to be understood as an example, and that, of course, too other cutting tools can be used, e.g. the width of the gap 76 should be larger.
  • Figs. 7A to 7D the sequence is again in four pictures the processing steps in the apparatus of FIG. 6 illustrated.
  • Fig. 7A shows the moment in which that in a horizontal plane circumferential circular saw blade 70 (vertical axis of rotation 72) dips laterally into the tree trunk 30a.
  • FIG. 7B shows that the circular saw blade 70 is in the tree trunk 30b has generated the horizontal gap 76 of finite width d.
  • FIG. 7C illustrates that now engaging tree trunk 30c Corner cutter 44 which extends about the horizontal axis 46 ' rotates.
  • the corner cutter 44 spant while the chips 10 'in a shape of FIG. 6 from.
  • Fig. 7D shows the final state of the log 30d with milled corner 34 ', both edge surfaces 38 'and 40' are of high surface quality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Details Of Cutting Devices (AREA)
  • Formation And Processing Of Food Products (AREA)

Claims (4)

  1. Dispositif de production d'un copeau de bois (10 ; 10'), muni d'un outil de confection d'éclats de bois (44-52) tournant autour d'un premier essieu horizontal (46) et destiné au retrait du copeau (10 ; 10') du bois de sorte que le copeau de bois (10 ; 10') présente une première surface concave (12) et une seconde surface convexe (14) limitant le copeau de bois (10 ; 10'), les deux surfaces (12, 14) convergeant en une pointe (16), la dite pointe (16) se trouvant sur une ligne médiane (26) courant entre les deux surfaces (12, 14) sur un tronçon de la ligne médiane (26b) à l'extérieur du copeau de bois (10 ; 10'), et d'une fraise-scie (70) tournant autour d'un deuxième essieu vertical (72) pour le retrait du bois avant le détachement de la partie où les surfaces (12, 14) convergent en une pointe (16), caractérisé en ce que l'outil de confection d'éclats de bois (44-52) aille assez loin afin que, pour le copeau de bois produit (10'), la longueur (I2) du tronçon de la ligne médiane (26b) se trouvant à l'extérieur du copeau de bois (10') représente entre 40% et 100% de la longueur (I1) du tronçon de la ligne médiane (26a) se trouvant à l'intérieur du copeau de bois (10').
  2. Dispositif selon la revendication 1, caractérisé en ce que la fraise-scie (70) produise une fissure (76) d'une profondeur déterminée (d).
  3. Dispositif selon les revendications 1 ou 2, caractérisé en ce que la fraise-scie (70) soit épaisse d'au moins 5 mm, de préférence d'au moins 6 mm.
  4. Dispositif selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que, entre la fraise-scie (70) et l'outil de confection d'éclats de bois (44 à 52), un départoir (78) aligné à la fraise-scie (70) soit prévu.
EP00985092A 1999-12-15 2000-11-25 Dispositif de production d'un copeau de bois Expired - Lifetime EP1237688B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK00985092T DK1237688T3 (da) 2000-11-25 2000-11-25 Anordning til fremstilling af en flis

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19960319A DE19960319C1 (de) 1999-12-15 1999-12-15 Vorrichtung zum Erzeugen eines Hackschnitzels sowie Vorrichtung zum Profilieren eines Baumstammes
DE19960319 1999-12-15
PCT/EP2000/011756 WO2001043927A2 (fr) 1999-12-15 2000-11-25 Dispositif de production d'un copeau de bois, ainsi que dispositif servant a profiler un tronc d'arbre

Publications (2)

Publication Number Publication Date
EP1237688A2 EP1237688A2 (fr) 2002-09-11
EP1237688B1 true EP1237688B1 (fr) 2005-02-09

Family

ID=7932645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00985092A Expired - Lifetime EP1237688B1 (fr) 1999-12-15 2000-11-25 Dispositif de production d'un copeau de bois

Country Status (7)

Country Link
US (1) US6719022B2 (fr)
EP (1) EP1237688B1 (fr)
AT (1) ATE288817T1 (fr)
CA (1) CA2391804C (fr)
DE (2) DE19960319C1 (fr)
ES (1) ES2236016T3 (fr)
WO (1) WO2001043927A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934630A (en) * 1973-04-16 1976-01-27 Cockle Roy R Method and apparatus for producing rough cut lumber
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
DE3244393C1 (de) * 1982-12-01 1984-03-01 Wurster u. Dietz GmbH u. Co Maschinenfabrik, 7400 Tübingen Verfahren zum Herstellen von allseitig bearbeiteten Holzerzeugnissen sowie Vorrichtung zur Durchfuehrung des Verfahrens
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
DE4337682C1 (de) * 1993-11-04 1995-05-04 Dietz Hans Prof Dr Verfahren und Vorrichtung zum Zerlegen eines Baumstammes
SE510101C2 (sv) * 1995-10-24 1999-04-19 Soederhamns Verkstaeder Ab Förfarande och anläggning för delning av stockar i smärre virkesstycken
FI99096C (fi) * 1995-11-24 1997-10-10 Kauko Rautio Menetelmä puunrungon käsittelemiseksi lastuamalla
SE514304C2 (sv) * 1997-10-10 2001-02-05 Ari Ab Anordning och förfarande för bearbetning av en timmerstock
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

Also Published As

Publication number Publication date
DE19960319C1 (de) 2001-07-26
WO2001043927A3 (fr) 2001-12-20
CA2391804A1 (fr) 2001-06-21
WO2001043927A2 (fr) 2001-06-21
ATE288817T1 (de) 2005-02-15
ES2236016T3 (es) 2005-07-16
US20030005976A1 (en) 2003-01-09
EP1237688A2 (fr) 2002-09-11
DE50009510D1 (de) 2005-03-17
US6719022B2 (en) 2004-04-13
CA2391804C (fr) 2007-04-03

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