EP0988946B1 - Procédé et appareil pour déchiqueter le bois - Google Patents

Procédé et appareil pour déchiqueter le bois Download PDF

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Publication number
EP0988946B1
EP0988946B1 EP99118511A EP99118511A EP0988946B1 EP 0988946 B1 EP0988946 B1 EP 0988946B1 EP 99118511 A EP99118511 A EP 99118511A EP 99118511 A EP99118511 A EP 99118511A EP 0988946 B1 EP0988946 B1 EP 0988946B1
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EP
European Patent Office
Prior art keywords
logs
blade ring
axis
knife ring
movement
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
EP99118511A
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German (de)
English (en)
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EP0988946A2 (fr
EP0988946A3 (fr
Inventor
Joachim Freitag
Andreas Freitag
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Individual
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Individual
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Publication date
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Publication of EP0988946A2 publication Critical patent/EP0988946A2/fr
Publication of EP0988946A3 publication Critical patent/EP0988946A3/fr
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Publication of EP0988946B1 publication Critical patent/EP0988946B1/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
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
    • 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
    • B27L11/002—Transporting devices for wood or chips

Definitions

  • the invention relates to a method for cutting logs large-scale wood chips, in which a rotating, with parallel to its axis of rotation aligned cutting knives provided knife ring on the one hand and a number also aligned parallel to the axis of rotation of the knife ring On the other hand, logs move towards each other and the logs are cut become.
  • the invention also relates to an apparatus for executing this procedure.
  • OSB Oriented Strand Board
  • strands are large-area wood chips with preferred geometry, exemplary 100 mm x14 mm x 0.5 mm, to understand the flat crosswise can be glued on top of each other to form OSB.
  • the resulting plates stand out compared to conventional chipboard by much higher Strength. They also point due to the orientation of the wood chips a significantly lower proportion of adhesive or a more favorable ratio of Components wood and glue on, resulting in a saving of glues leads.
  • This knife ring essentially has the geometry of a Hollow cylinder, on its inner circumference radially symmetrically distributed in parallel cutting knives aligned with the axis of rotation are arranged.
  • the cutting edge describes a path that is spiral runs and corresponds to a helix with a slope that of the Feed direction and depends on the feed speed.
  • a wood cutting machine is known from DE 894 765 C, which in particular has been developed for the extraction of long wood chips for chipboard.
  • a carousel-like drum running around a vertical axis acts here individual chambers open at the top and bottom to hold wood and one located under this drum, eccentric to the drum axis circumferential cup wheel together with vertical knives.
  • the Cup wheel arranged so that the knives the timbers in a certain area of the circulation. Both the cutting edges of the knives and the logs are aligned parallel to the axis of rotation of the cup wheel.
  • the on the pot washer directional movement of the logs runs at least during the cutting process on a curved path.
  • the invention is based on the object of a method for Machining logs of the type described above in such a way that with each revolution of the knife wheel, a larger number of chips that the above-described quality requirements are sufficient, can be produced.
  • the logs between the side walls are held, like the movement of the knife ring a circular arc curvature have, the path of movement of the knife ring and the Curvatures of the side walls have the same center.
  • the invention also achieves the object of a device for machining Logs with a rotating knife ring attached to its inner circumference is equipped with cutting blades aligned parallel to its axis of rotation, with an insertion and holding system for logs through which the logs held at one end and with the opposite free end in the Knife ring are insertable and with a feed device for generating a movement of the rotating towards the free ends of the logs
  • a feed device for generating a movement of the rotating towards the free ends of the logs
  • the feed device on one Circular path has pivotable part on which the rotating knife ring is arranged , the pivot axis assigned to the part and the axis of rotation of the knife ring are aligned parallel to each other.
  • the drive motor for the knife ring and the transmission members can arranged for the rotary movement of the drive motor to the knife ring his.
  • the Drive motor also used as a counterweight to the mass of the knife ring and can be mounted on the opposite side of the pivot axis.
  • a hydraulic drive can be provided for the pivoting movement, for example a hydraulic cylinder that is connected to the swivel lever that when extending the piston rod, the knife ring against the one to be machined Bundle of wood is advanced.
  • the radii of curvature can be measured so that the distances between the circular path of the axis of rotation of the knife ring and the inner and the outer side wall is not the same size, but for example the distance between Axis of rotation and outer side wall, i.e. the side wall with the larger one Radius of curvature is greater than the distance between the axis of rotation and the inner side wall, i.e. to the side wall with the smaller radius of curvature.
  • the side walls are designed in such a way that they project into the knife ring approximately according to the axial extent of the knife and are fixed to the knife ring.
  • the invention can be designed in such a way that the knife ring not on a rocker or a swivel lever, but on a guide carriage is mounted, which is on a curved path, preferably also a circular path, is slidably arranged.
  • the drive motor for the knife ring can also be used here also be mounted on the guide carriage and it is also here advantageous to use a hydraulic cylinder to generate the feed movement, on the one hand fixed to the frame and on the other hand with the guide carriage is connected and the guide carriage when extending the piston rod moved and thus triggers the feed movement.
  • Knife ring with a gear link of a four-link coupling gear for example a slider crank chain, connected and movable on a circular path is.
  • a gear link of a four-link coupling gear for example a slider crank chain
  • a very advantageous embodiment of the invention can be achieved if the Radius of curvature of the feed movement in a range between 1800mm and 2500mm.
  • FIG. 4 shows a device for machining logs 1, in which a knife ring 2 is rotatably mounted about an axis of rotation 3.
  • the axis of rotation 3 runs perpendicular to the plane of the drawing, the logs 1 are aligned with their longitudinal direction parallel to the axis of rotation 3.
  • the knife ring 1 has the geometric shape of a hollow cylinder, which on its inner circumference 4 is equipped with cutting knives 5.
  • the cutting knives 5 are distributed radially symmetrically on the inner circumference 4 of the knife ring 2, i.e. she have the same arc distance from each other. 4 are exemplary twenty cutting blades 5 are provided.
  • the device comprises an insertion and holding system for the logs 1, in order to implement the holding function essentially a first Side wall 6, a second side wall 7, a base 8 and a counter wall 9 are provided.
  • the logs 1 are stored, and in such a way that they are in their longitudinal direction or in the direction of the axis of rotation 3 the base 8 are slidable.
  • the deposited on the base 8 and by the two side walls 6 and 7 wooden trunks 1 held sideways are piled up into a bundle. Laying down the logs 1 the base 8 for the purpose of loading the device takes place outside the knife ring 2.
  • the slide-in system After loading the device or after placing the logs on the base 8 between the side walls 6 and 7 is made by the slide-in system, which is not shown in the drawing, the advancement of the Logs 1 (perpendicular to the drawing plane) in the interior of the knife ring 2, i.e. into the machining chamber 10.
  • the logs are 1 um a length dimension inserted into the knife ring 2, that of the length of the cutting knife 5 corresponds in the axial direction.
  • the machining process is now initiated by the knife ring 2 in Rotation offset about the axis of rotation 3 and then on the in the machining chamber 10 logs 1 in relative rest to the knife ring 2 is moved to.
  • the cutting process starts when the rotating Cutting knife 5 with the logs 1 closest to the circumference 4 come to the intervention.
  • the feed forces that occur are from the side walls 6 and 7, but especially taken from the counter wall 9.
  • the feed movement of the knife ring 2 on a Curve takes place.
  • the path movement, the axis of rotation 3 of the knife ring 2 describes, is identified by way of example as a circular path 11.
  • Fig. 4 runs the circular path 11 in the plane of the drawing, i.e. the axis of rotation is 3 aligned perpendicular to the circular area enclosed by the circular path 11 becomes.
  • the movement of the axis of rotation 3 on the circular path 11 is according to the invention achieved by a rocker 12, which is tiltable about a pivot axis 13, and on which the knife ring 2 is rotatably mounted. Also arranged on the rocker 12 is the drive motor 14, which is used to generate the rotary movement of the Knife ring 2 is used and for this purpose via a belt drive 15 with the Knife ring 2 is connected.
  • the pivoting movement of the knife ring takes place 2 counterclockwise, i.e. the weight of the logs 1 counteracts the feed forces.
  • the pivoting movement of the knife ring 2 clockwise in the same direction the knife ring 2 moved towards the logs 1 in the direction of gravity and the logs 1 against the gravity and through the knife ring acting feed forces are to be maintained.
  • a hydraulic cylinder 16 is provided.
  • the hydraulic system with which the hydraulic cylinder 16 is connected, the drive motor 14 for the knife ring 2 as well as the drive mechanism for the slide-in and holding system are connected to a control direction that is not shown in the drawing is and which should not be described in more detail, since it is from the State of the art is already known.
  • This control device is dependent from a sequence program in which the above-described movement sequences the triggering and coordination of the individual movements are stored, as inserting the logs 1 into the machining chamber 10 by control of the delivery system, switching on the rotation of the knife ring 2 by activation of the drive motor 14, initiation of the feed movement of the knife ring 2 by acting on the hydraulic cylinder 16, reversing the feed movement by counteracting the hydraulic cylinder 16, repeated insertion of the logs 1 into the machining chamber 10, etc.
  • the first Side wall 6 and the second side wall 7 are curved in a circular arc, the centers of curvature of both side walls, as well as the Center of curvature of the circular path 11, lie in the pivot axis 13.
  • the radius of curvature of the side wall 6 is smaller, the radius of curvature of the Side wall 7 is larger than the radius of curvature of the circular path 11, so that the circular path 11 runs between the two side walls 6 and 7.
  • first Side wall 6, the second side wall 7, the base 8 as well as the counter wall 9 concern. So it is conceivable to extend this towards to design the knife ring 2 differently, for example the side walls 6 and 7 as well as the sections of the logs to be machined 1 in the machining space 10 protrude and the feed movement of the knife ring 2 following about the pivot axis 13 can be arranged while the counter wall 9 remains fixed to the frame.
  • This configuration has the advantage that the logs 1 within the knife ring 2 or in the machining chamber 10 one during the entire machining process have a well-maintained hold, but requires relative movement between the side walls 6 and 7 and the counter wall 9 the relative movement between the side walls 6 and 7 and the logs 1 overcoming the investment forces, with which the logs 1 rest on the side walls 6 and 7 and thus higher feed forces.
  • the base 8 in the machining space protruding and following the feed movement of the knife ring 2 is movably arranged.
  • the change in the chip diagram shown in FIG. 5 can be achieved.
  • the chip quantities obtained from the individual chip sectors are no longer distributed symmetrically to the axis of rotation 3, as was the case in the prior art (see FIG. 3), but that one is here on the axis of rotation 3 related asymmetry is to be recorded, which means that, for example, a larger amount of chips from the neighboring chip sectors S 1 , S 2 and S 3 are available.
  • a higher availability of chips of uniform quality is thus advantageously achieved.
  • the width between the side walls 6, 7 and the area between the side walls 6, 7 that receives the logs can be aligned within the machining chamber 10 to the sectors that provide chips of sufficient quality and quantity.
  • the straight line between the swivel axis 13 and axis of rotation 3 before the start of the machining process i.e. while the supply of the logs 1 in the machining chamber, approximately horizontally be aligned and the feed or pivoting movement of the knife ring 2 about the pivot axis 13 should be in the R direction.
  • the diameter of the inner circumference 4 equipped with the cutting knives 5 the knife ring 2 can advantageously as the distance between the pivot axis 13th and axis of rotation 3 with 2,200 mm.
  • the radius of curvature of the first side wall 6 should be 1,550 mm during the radius of curvature the second side wall 7 should be 3,050 mm. That is the distance between the circular path 11, on which the axis of rotation 3 moves, and the side wall 6 by an amount of 200 mm smaller than the distance between the circular path 11 and the side wall 7. Due to this asymmetry in the positioning of the both side walls in relation to the path of movement of the axis of rotation 3 results a further improvement in the availability of chips of uniform quality.

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  • 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)

Claims (7)

  1. Dispositif pour déchiqueter du bois dans lequel un anneau porte-lames (2) pourvu de lames de coupe (5) orientées parallèlement à son axe de rotation (3) d'une part, et un nombre de troncs d'arbre orientés également parallèlement à l'axe de rotation (3) de l'anneau porte-lames (2) d'autre part, sont déplacés les uns vers les autres et les troncs d'arbre sont ainsi réduits en copeaux, caractérisé en ce que le mouvement de l'anneau porte-lames (2) tournant, orienté vers les troncs d'arbre (1) suit une trajectoire circulaire (11) au moins pendant l'opération de déchiquetage, tandis que les troncs d'arbre (1) sont maintenus en repos relatif par rapport à l'anneau porte-lames (2).
  2. Procédé selon la revendication 1, caractérisé en ce que les troncs d'arbre (1) sont maintenus entre des parois latérales (6, 7) qui présentent une courbure en arc de cercle comme le mouvement de l'anneau porte-lames (2), la trajectoire de l'anneau porte-lames (2) et les courbures des parois latérales ayant le même centre.
  3. Procédé selon la revendication 1 ou 2 dans lequel les troncs d'arbre (1) sont maintenus d'abord à l'une de leurs extrémités et sont introduits, par l'extrémité libre opposée, dans un anneau porte-lames (2) rotatif équipé sur son pourtour intérieur (4) de lames de coupe (5) à axes parallèles, puis l'anneau porte-lames (2) est déplacé, perpendiculairement à son axe de rotation (3), sur une trajectoire circulaire (11), le déchiquetage s'effectuant à l'intérieur de l'anneau porte-lames (2).
  4. Dispositif pour couper des troncs d'arbre (1),
    comportant un anneau porte-lames (2) rotatif qui est équipé sur son pourtour intérieur (4) de lames de coupe (5) orientées parallèlement à son axe de rotation (3),
    comportant un système de maintien et d'introduction des troncs d'arbre (1) au moyen duquel les troncs d'arbre (1) sont maintenus à l'une de leurs extrémités et peuvent être introduits dans l'anneau porte-lames (2) par l'extrémité libre opposée, et
    comportant un dispositif d'avance pour produire un mouvement, dirigé vers les extrémités libres des troncs d'arbre (1), de l'anneau porte-lames (2) rotatif, caractérisé en ce que le dispositif d'avance comporte un élément pivotant sur une trajectoire circulaire (11), sur lequel est disposé l'anneau porte-lames (2) rotatif, l'axe de pivotement (13) affecté à l'élément et l'axe de rotation (3) de l'anneau porte-lames (2) étant orientés parallèlement l'un à l'autre.
  5. Dispositif selon la revendication 4, caractérisé en ce que les troncs d'arbre (1) sont maintenus entre deux parois latérales (6, 7) qui présentent une courbe en arc de cercle, les centres de la courbure des deux parois latérales (6, 7) se situant dans l'axe de pivotement (13) de l'anneau porte-lames (2) et le rayon de courbure d'une première paroi latérale (6) étant inférieur et le rayon de courbure de la deuxième paroi latérale (7) supérieur au rayon de pivotement de l'anneau porte-lames (2).
  6. Dispositif selon la revendication 5, caractérisé en ce que le rayon de courbure de la première paroi latérale (6) est d'environ 1 550 mm, le rayon de pivotement de l'anneau porte-lames d'environ 2 200 mm, le rayon de courbure de la deuxième paroi latérale (7) d'environ 3 050 mm et le diamètre intérieur de l'anneau porte-lames (2) d'environ 2 200 mm.
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que les parois latérales (6, 7) sont réalisées de manière à pénétrer en partie dans l'anneau porte-lames (2) et sont solidaires du bâti de l'anneau porte-lames (2), et, en suivant le mouvement de l'anneau porte-lames (2), elles sont déplaçables par rapport aux troncs d'arbre (1).
EP99118511A 1998-09-21 1999-09-18 Procédé et appareil pour déchiqueter le bois Expired - Lifetime EP0988946B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843612 1998-09-21
DE19843612A DE19843612C2 (de) 1998-09-21 1998-09-21 Vorrichtung zum Zerspanen von Holz

Publications (3)

Publication Number Publication Date
EP0988946A2 EP0988946A2 (fr) 2000-03-29
EP0988946A3 EP0988946A3 (fr) 2000-04-26
EP0988946B1 true EP0988946B1 (fr) 2003-12-10

Family

ID=7881959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118511A Expired - Lifetime EP0988946B1 (fr) 1998-09-21 1999-09-18 Procédé et appareil pour déchiqueter le bois

Country Status (3)

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US (1) US6390161B1 (fr)
EP (1) EP0988946B1 (fr)
DE (2) DE19843612C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116691B4 (de) * 2001-04-04 2004-07-15 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Zerkleinern von faserigem Aufgabegut, insbesondere Stammholz
US7819147B1 (en) * 2008-04-14 2010-10-26 Engineering Research Associates, Inc. Chipboard
CN106388875B (zh) * 2016-11-30 2023-07-04 重庆西山科技股份有限公司 旋切操作组件
CN106491166B (zh) * 2016-11-30 2023-07-04 重庆西山科技股份有限公司 旋切刀具

Family Cites Families (20)

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Publication number Priority date Publication date Assignee Title
US2620138A (en) 1947-07-09 1952-12-02 Commergnat Guilliet Et Cie Soc Comminuting apparatus
DE894765C (de) 1951-12-31 1953-10-26 Erwin Behr Fa Holzzerspanungsmaschine
DE1203446B (de) 1957-12-12 1965-10-21 Adolf John & Co G M B H Vorrichtung zum Zerspanen von Hoelzern
US3661192A (en) * 1969-12-08 1972-05-09 Nicholson Mfg Co Peripheral chipper for round log sections
DE2207901C2 (de) * 1972-02-19 1974-01-24 Hombak Maschinenfabrik Kg, 6550 Bad Kreuznach Zuführeinrichtung eines Messerwellenzerspaners
SE7411249L (sv) 1974-09-05 1976-03-08 Cellwood Machinery Ab Maskin for framstellning av trespan ur huggen flis
CA1040405A (fr) * 1975-11-08 1978-10-17 Hombak Maschinenfabrik Kg Dispositif de reglage des lames sur un arbre porte-lames
DE2635146A1 (de) * 1976-08-05 1978-02-09 Hombak Maschinenfab Kg Holzzerspanungsmaschine
FI66137C (fi) * 1979-06-15 1986-03-26 Jaakko Lauri Poentelin Vedhuggningsmaskin
DE2947199A1 (de) * 1979-11-23 1981-06-04 Maschinenfabrik B. Maier Kg, 4800 Bielefeld Holzzerspannungsmaschine
DE3245373A1 (de) 1982-12-08 1984-06-14 Fa. Hermann Quelle, 4450 Lingen Vorrichtung zum zerkleinern von abfallholz, insbesondere stubben, zu holzschnitzeln
DE3505077C2 (de) * 1984-02-29 1987-01-29 Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken Zerspanunsmaschine für Stamm- und Restholz
DE3505072A1 (de) 1985-02-14 1986-08-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einrichtung zur schlagerzeugung bei einer schlagbohrmaschine
US4874024A (en) * 1986-10-14 1989-10-17 Stanley Arasmith Wood processing device having self-reversing feature
US4865094A (en) * 1988-10-24 1989-09-12 Cae Machinery Ltd. Long log waferizer
US5211688A (en) * 1990-12-21 1993-05-18 University Of Georgia Research Foundation, Inc. Apparatus and method for making wood curls
DE4335348C1 (de) * 1993-07-21 1994-06-01 Inter Wood Maschinen Langholzzerspaner
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FI104543B (fi) * 1997-10-21 2000-02-29 Andritz Patentverwaltung Menetelmä puutavaran lastutuslaitteen toiminnan tehostamiseksi

Also Published As

Publication number Publication date
EP0988946A2 (fr) 2000-03-29
EP0988946A3 (fr) 2000-04-26
DE19843612C2 (de) 2000-12-14
DE59908005D1 (de) 2004-01-22
US6390161B1 (en) 2002-05-21
DE19843612A1 (de) 2000-04-06

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