EP0604891B1 - Procédé et dispositif pour trancher du bois équarri en planches d'épaisseur prédéterminée - Google Patents

Procédé et dispositif pour trancher du bois équarri en planches d'épaisseur prédéterminée Download PDF

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Publication number
EP0604891B1
EP0604891B1 EP93120657A EP93120657A EP0604891B1 EP 0604891 B1 EP0604891 B1 EP 0604891B1 EP 93120657 A EP93120657 A EP 93120657A EP 93120657 A EP93120657 A EP 93120657A EP 0604891 B1 EP0604891 B1 EP 0604891B1
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EP
European Patent Office
Prior art keywords
slicing
squared timber
cutting
squared
boards
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
EP93120657A
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German (de)
English (en)
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EP0604891A1 (fr
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.)
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Original Assignee
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Application filed by Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Publication of EP0604891A1 publication Critical patent/EP0604891A1/fr
Application granted granted Critical
Publication of EP0604891B1 publication Critical patent/EP0604891B1/fr
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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
    • 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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines

Definitions

  • the invention relates to a method for cutting a squared timber into a number of thin boards of predetermined thickness according to the preamble of claim 1.
  • the invention further relates to a system for performing such a method.
  • thin boards are processed into laminate products such as composite panels, wall and floor panels or glue binders, for the manufacture of which they are generally combined into layers with a larger surface area, it is necessary that the thin boards to be processed have the same thickness as possible, so that they are assembled There were no surface gradations. In contrast, different layers can have different thicknesses. If thin boards are produced by sawing from a square timber, the thicknesses of the boards can generally be determined or adjusted relatively precisely by appropriate adjustment of the saw blades. The required initial thickness of a squared timber for producing a certain number of boards of the same thickness can also be determined relatively accurately with additional consideration of the thickness of the saw cut joints.
  • the actual thickness of a board depends on various process parameters, including the particular state of the wood, so that it is often only possible to react to the knife setting after measuring a cut board in order to correct the thickness of the boards subsequently separated from a squared timber.
  • a square timber of a certain thickness can be processed completely into thin boards of desired, predetermined thickness in one, usually straight-line passage through the system. If one furthermore takes into account that today when cutting thin boards, cutting speeds of 90-140 m / min and above are used, the throughput of a squared timber for its complete division by a sequence of cutting devices arranged one behind the other becomes so short that it is acceptable Effort measuring a produced board from a cutting device and a resulting correction of the knife position of the next cutting device can no longer be carried out. This possibility is practically completely ruled out if several squared timbers are led through the sequence of cutting devices in direct succession. The knife correction could then only take place while a board is in separation, which would give it an uneven thickness over its length.
  • the invention is therefore based on the object of proposing a method and a system with which it is possible to produce boards of a predetermined thickness even in the case of a succession of cutting devices which divide a squared timber into thin boards in one pass.
  • the object of the invention is therefore achieved in an optimal manner against the rules of avoiding waste chips in that the advantage of cutting boards is neglected to a small extent.
  • machining By machining the remaining board in a way that does not cut off a coherent layer of wood - and in this way the term "machining" is to be understood here - less waste is ultimately accepted than if one were to do it consistently Carrying out the cutting technique would have to discard a remaining board, which in any case would have to be thicker than the maximum excess required by the machining aftertreatment.
  • the machining post-processing is preferably carried out by planing, in such a way that the rest of the board is guided with one of its main surfaces on a support surface and the machining is carried out from the other side. In this way, a lack of parallelism of the rest of the board can also be restored.
  • Cutting machines which have proven themselves in practice, are constructed in such a way that the squared timber is guided on a support table and pressed against a knife edge which is approximately at a distance from the board thickness to be produced above the support table.
  • the back of the knife serves as a support surface for the remaining square timber reduced by a board thickness and the board produced is led off obliquely downwards from the gap between the first support surface and knife edge and finally removed from the side of the machine.
  • a cutting machine contains several cutting devices one after the other, or that boards are cut from two sides of a square timber at the same time, but the previous practice is such that each cutting device is part of a separate cutting machine.
  • a system with a sequence of cutting machines is expediently designed in such a way that squared timbers of a certain maximum thickness can be broken down into a certain number of thin boards in one pass. If, contrary to this design, fewer boards are to be produced in one pass, the system is advantageously to be equipped in such a way that the remaining board passes through the last, unnecessary cutting machines without a layer of wood is separated from it.
  • the last cutting machines in a sequence of machines which are suitable for an idle run are to be equipped in such a way that their knives can be set to a board thickness of 0 mm, ie that the knife edge can be brought into the plane of the support table or below.
  • the smooth passage of a residual board through a cutting machine can also be made more difficult by the counterpressure bar in front of each knife and rising from the support table.
  • the machines provided for empty passage are therefore also additionally equipped so that the counter pressure bars can be moved back into the level of the support table or below.
  • the unimpeded passage of the rest of the board by a cutting machine can also be ensured in such a way that the cutting knife is replaced by a blind plate which has no cutting edge.
  • the blind plate has the same dimensions as a cutting knife, so that a completely flat support and guide surface for the rest of the board is formed after inserting the blind plate.
  • the system 10 for dividing squared timbers 26 is composed of a material feed 12, a number of cutting machines 14a-g arranged one behind the other, which are connected to one another by transport devices 16a-f, a planing machine 18 arranged behind the last cutting machine 14g and a transport system 20 for transporting of the cut boards 32 together.
  • the material feed 12 can be designed as a roller conveyor in which at least some of the rollers are driven, but it can also, as shown here, be designed as a conveyor belt, on which squares 26 are fed to the cutting machine 14a-g.
  • the squared timbers 26 are then guided at high speed, at least 90 m / min, preferably approximately 140 m / min, up to a maximum of 220 m / min, in the longitudinal direction through the cutting machines 14a-g arranged one behind the other.
  • the cutting machines 14a-g have their own feed or transport devices.
  • Conveyor belts 16a-f or roller conveyors are arranged between the cutting machines 14a-g for conveying the squared timber 26, as shown here.
  • a discharge 22a-g for the cut boards 32 branches off from each cutting machine 14a-g. These discharges are part of the transport system 20, by means of which the cut boards 32 are fed for further processing.
  • Roller conveyors or, as shown, conveyor belts can also be used here.
  • the last cutting machine 14g is connected to the planing machine 18 via a further conveyor device 24. That in the planer 18 Calibrated rest board is also fed to the transport system 20 and thus to the same further processing as the other boards 32.
  • the system 10 is operated in such a way that a squared timber 26 is fed to the first cutting machine 14a via the material feed 12.
  • the squared timber 26 is brought in the cutting machine 14a on a horizontal contact surface 28 to the knife 30 arranged above the plane of the contact surface.
  • the knife 30 cuts a board 32 of predetermined thickness d, which is transported downwards.
  • a counter-pressure bar 34 is arranged in the contact surface 28 in the cutting direction directly in front of the knife edge, which protrudes somewhat from the contact surface 28.
  • the counter pressure bar 34 thereby exerts selective pressure on the squared timber 26, so that the gap caused by the knife edge in the squared timber 26 cannot spread out in an uncontrolled manner.
  • a board 32 of predetermined thickness d is cut off in each of the arranged cutting machines 14a-g on the underside of the square timber 26. With each pass through a cutting machine 14a-g, the thickness of the squared timber 26 is reduced by the amount of the board thickness d.
  • the number of cutting machines 14a-g arranged one behind the other depends on the maximum number of boards 32 which are to be cut from a square timber 26. Are squared timbers 26 of lower thickness cut so that fewer boards 32 are obtained or squares 26 of the same thickness become thicker boards 32 cut so that again fewer boards 32 are obtained, it may be that the remaining board to be planed has to pass through one or more cutting machines 14a-g without a board 32 being cut off there. As usual, the rest of the board is guided over the contact surface 28 of the cutting machines 14a-g. However, this flat transport surface would be interrupted by the protruding counter pressure bar 34, which becomes inoperative as soon as no board 32 is cut off in the cutting machine 14a-g.
  • the counter pressure bar 34 is therefore displaceably arranged so that it can be lowered at least into the plane of the contact surface 28 if the cutting machine 14a-g is only passed by a remaining board without a board 32 being separated.
  • the displaceable bearing 36 can be designed, for example, as a hydraulic bearing or as a mechanical bearing.
  • the same knife position and lowering of the counter pressure side can be selected if e.g. for maintenance work, any of the machines connected in series is run through without cutting.
  • a square timber 26 is broken down into a number n of boards 32 in the system 10.
  • a so-called residual board remains, which according to the method has a thickness which is slightly greater than the thickness d of the boards 32.
  • the rest of the board is either fed directly to the planing machine 18 or any cutting machines 14a-g that are still present are passed without boards 32 being separated, in order to then be fed to the planing machine 18 via the conveyor device 24.
  • this remaining board no longer has a uniform thickness. Since the surface of the squared timber 26 lying on the contact surface 28 has always been machined, this lower surface lying on the contact surface 28 is to be regarded as flat. Any irregularities in the thickness of the rest of the board are therefore advantageously removed from the top of the rest of the board.
  • the planing machine 18 is preferably equipped with planer shafts located at the top of the rest of the board.
  • the planer shafts are designed so that they reduce the rest of the board to the predetermined thickness d by removing individual shavings.
  • the material loss caused by the removal of shavings is less than if a residual board whose thickness d1 was less than the predetermined thickness d were cut off in a last cutting machine 14a-g.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Radiation-Therapy Devices (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (8)

  1. Procédé pour partager un bois équarri (26) en un nombre de planches minces (32), dans lequel les planches individuelles (32) sont séparées les unes après les autres d'un bois équarri (26) par tranchage au moyen d'un couteau (30) essentiellement dans le sens de la longueur du bois équarri (26), caractérisé en ce qu'est utilisé un bois équarri (26), dont l'épaisseur perpendiculaire au plan de tranchage du couteau (30) est un peu plus grande que la somme des épaisseurs d'un nombre entier de planches (32) d'épaisseur prédéterminée, et en ce que la planche restante pouvant être produite lors de la séparation est réduite à une épaisseur prédéterminée par une reprise par enlèvement de copeaux.
  2. Procédé salon la revendication 1, caractérisé en ce que la planche restante est réduite à cette épaisseur prédéterminée par rabotage.
  3. Installation pour partager des bois équarris (26) en un nombre de planches minces (32) d'épaisseur prédéterminée, à l'aide d'une suite de dispositifs de tranchage placés les uns derrière les autres (14a à g) pour le partage purement par tranchage respectivement d'une planche (32) d'un côté d'un bois équarri (26), caractérisée en ce qu'après la suite de dispositifs de tranchage (14a à g) est prévu un dispositif de reprise par enlèvement de copeaux (18) pour réduire l'épaisseur de la dernière planche ou planche restante d'un bois équarri (26) pouvant être produite par la suite de dispositifs de tranchage (14a à g).
  4. Installation selon la revendication 3, caractérisée en ce que le dispositif pour la reprise par enlèvement de copeaux est une raboteuse (18).
  5. Installation salon la revendication 3 ou 4, caractérisée on ce que chaque dispositif de tranchage de la suite de dispositifs de tranchage (14a à g) est une partie d'une trancheuse séparée et en ce que les trancheuses sont disposées en une suite les unes derrière les autres.
  6. Installation selon la revendication 5, caractérisée en ce que des dispositifs de transport (16a à f) sont prévus entre les trancheuses (14a à g) pour le transport ultérieur essentiellement en ligne droite du bois équarri (26) respectivement de chaque bois équarri restant dans son sens longitudinal à travers la suite de trancheuses (14a à g) et en ce qu' un dispositif de transport (24) est prévu après la dernière trancheuse pour le transport ultérieur direct du dernier bois équarri restant formant la planche restante dans la raboteuse (18) dispositif de reprise par enlèvement de copeaux.
  7. Installation selon au moins l'une quelconque des revendications 3 à 6, dont les dispositifs de tranchage (14a à g) présentent une surface d'installation (28) pour le guidage du bois équarri (26), un couteau (30) réglable en direction du bois équarri (26) à une distance "d" de la surface d'installation (28) dans le sens du transport du bois équarri (26) vu d'après la surface d'installation (28) et une charge de contre-pression (34) située devant le couteau (30), qui dépasse un petit peu de la surface d'installation (28), caractérisée en ce que pour un passage du bois équarri (26) sans séparation d'une planche (32) le couteau (30) et la charge de contre-pression (34) d'au moins un dispositif de tranchage (14a à g) peuvent être reculés au niveau ou au-dessous de la surface d'installation (28).
  8. Installation selon au moins l'une quelconque des revendications 3 à 6, caractérisée en ce que le couteau (30) est remplaçable dans au moins un des dispositifs de tranchage (14a à g) par une plaque de tôle, qui forme une surface plane avec la surface d'installation (28).
EP93120657A 1992-12-28 1993-12-22 Procédé et dispositif pour trancher du bois équarri en planches d'épaisseur prédéterminée Expired - Lifetime EP0604891B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4244310A DE4244310C1 (de) 1992-12-28 1992-12-28 Verfahren und Anlage zum schneidenden Aufteilen eines Kantholzes in Bretter vorbestimmter Dicke
DE4244310 1992-12-28

Publications (2)

Publication Number Publication Date
EP0604891A1 EP0604891A1 (fr) 1994-07-06
EP0604891B1 true EP0604891B1 (fr) 1996-03-06

Family

ID=6476694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120657A Expired - Lifetime EP0604891B1 (fr) 1992-12-28 1993-12-22 Procédé et dispositif pour trancher du bois équarri en planches d'épaisseur prédéterminée

Country Status (7)

Country Link
US (1) US5427163A (fr)
EP (1) EP0604891B1 (fr)
JP (1) JPH0880510A (fr)
AT (1) ATE134920T1 (fr)
CA (1) CA2103316A1 (fr)
DE (2) DE4244310C1 (fr)
FI (1) FI935689A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509653C1 (de) * 1995-03-17 1996-05-23 Linck Masch Gatterlinck Verfahren zur Herstellung von dünnen Brettern, insbesondere Parkettlamellen
US5881786A (en) * 1997-06-10 1999-03-16 Weyerhaeuser Company Method of producing wood strips for conversion into composite lumber products
WO2001019575A1 (fr) * 1999-09-14 2001-03-22 Hans Dietz Procede, dispositif et coupeuse a copeaux pour la production de panneaux definis tridimensionnels
WO2001082678A2 (fr) * 2000-05-02 2001-11-08 Sun Microsystems, Inc. Dispositif de surveillance de l'appartenance a un groupe
ITBZ20110014A1 (it) * 2011-04-11 2012-10-12 Albert Rabensteiner Rifilatrice per legno, in particolare squadratrice doppia.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1107810A (en) * 1909-03-24 1914-08-18 Baxter D Whitney & Son Scraping-machine.
US1009688A (en) * 1910-03-31 1911-11-21 Thomas A Peterson Planing-machine.
US1503704A (en) * 1923-11-22 1924-08-05 Chester P Mullens Surveying instrument
US3727654A (en) * 1971-04-21 1973-04-17 Marunaka Tekkosho Inc Planer machine
DE2751238C2 (de) * 1977-11-16 1979-07-26 Gebrueder Linck Maschinenfabrik Und Eisengiesserei Gatterlinck, 7602 Oberkirch Vorrichtung zur Erzeugung von Nutzholz aus Rundholzstämmen
DE3343294A1 (de) * 1983-11-30 1985-06-05 Gebrüder Linck Maschinenfabrik und Eisengießerei "Gatterlinck", 7602 Oberkirch Vorrichtung zur erzeugung von kantholz durch spanloses abtrennen von seitenbrettern
DE8701511U1 (fr) * 1987-01-31 1988-05-26 Gebrueder Linck Maschinenfabrik "Gatterlinck" Gmbh & Co Kg, 7602 Oberkirch, De
EP0376918B1 (fr) * 1988-12-30 1995-03-29 Gebr. Linck Maschinenfabrik "Gatterlinck" GmbH & Co. KG Méthode et dispositif pour produire des lamelles de bois à partir de bois de charpente
DE4026346A1 (de) * 1989-11-01 1991-05-02 Linck Masch Gatterlinck Verfahren zum spanlosen aufteilen eines kantholzes in bretter gleicher dicke
JPH03254901A (ja) * 1990-03-06 1991-11-13 Marunaka Tekkosho:Kk 木工用スライサー装置
US5318083A (en) * 1991-01-30 1994-06-07 Firma Gebruder Linck Machinenfabrik "Gatterlinck" Gmbh & Co., Kg Apparatus for cutting and severing of a thin board from squared timber

Also Published As

Publication number Publication date
DE4244310C1 (de) 1993-10-28
ATE134920T1 (de) 1996-03-15
EP0604891A1 (fr) 1994-07-06
US5427163A (en) 1995-06-27
FI935689A (fi) 1994-06-29
CA2103316A1 (fr) 1994-06-29
FI935689A0 (fi) 1993-12-17
JPH0880510A (ja) 1996-03-26
DE59301799D1 (de) 1996-04-11

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