EP0426002B1 - Verfahren zum spanlosen Aufteilen eines Kantholzes in Bretter gleicher Dicke - Google Patents

Verfahren zum spanlosen Aufteilen eines Kantholzes in Bretter gleicher Dicke Download PDF

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Publication number
EP0426002B1
EP0426002B1 EP90120454A EP90120454A EP0426002B1 EP 0426002 B1 EP0426002 B1 EP 0426002B1 EP 90120454 A EP90120454 A EP 90120454A EP 90120454 A EP90120454 A EP 90120454A EP 0426002 B1 EP0426002 B1 EP 0426002B1
Authority
EP
European Patent Office
Prior art keywords
thickness
planks
squared timber
remaining
cutter
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
EP90120454A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0426002A3 (en
EP0426002A2 (de
Inventor
Siegmar Gönner
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 Maschinenfabrik Gatterlinck GmbH and Co KG
Original Assignee
Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG
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 Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG filed Critical Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG
Priority to AT90120454T priority Critical patent/ATE97604T1/de
Publication of EP0426002A2 publication Critical patent/EP0426002A2/de
Publication of EP0426002A3 publication Critical patent/EP0426002A3/de
Application granted granted Critical
Publication of EP0426002B1 publication Critical patent/EP0426002B1/de
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
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/533—With photo-electric work-sensing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/538—Positioning of tool controlled

Definitions

  • the invention relates to a method for the non-cutting lossless division of a squared timber into a predetermined number of thin boards of a certain thickness without a lost remaining board.
  • the invention relates in particular to a method for the non-cutting lossless division of a squared timber into a predetermined number of thin boards of a certain thickness sequence, in particular for the production of multi-layer composite panels and other laminate components, in which a board is successively cut off from the squared timber under the action of a knife and a counter-pressure element by pushing the squared timber against the knife in its longitudinal direction and pressing it in the transverse direction against the knife and counterpressure element by a pressure device, and the distance between the knife and counterpressure element transverse to the longitudinal direction of the squared timber essentially determining the thickness of the board produced and the distance between the knives and pressure device transversely to the longitudinal direction of the squared timber during the severing of a board corresponds essentially to the thickness of the squared timber minus the thickness of the board to be severed.
  • the slat-like thin boards required for this have been sawn Cutting of squared timbers.
  • this process is very uneconomical with regard to the use of wood, as up to 40% of the initial wood is obtained as sawdust due to the small board thicknesses that are sometimes required, it is relatively easy when sawing to cut, a squared timber into boards of the same type
  • To divide the thickness if one takes into account the width of the saw kerf created, which depends on the type of saw blade. If, for example, ten boards of the same thickness are to be produced from one square timber, their thickness results as one tenth of the square timber thickness reduced by nine times the saw cut width.
  • the parameter that roughly determines the thickness of a board to be produced is the distance between the knife and the counterpressure element in a direction transverse to the axis of the squared timber.
  • the really resulting board thickness depends on a number of further process parameters, namely, for example, the wood moisture, the pressure with which the counterpressure element may be pressed against the squared timber independently of the knife, and the like. See here DE-OS 36 23 237.
  • the invention is therefore based on the object of providing a method with which a specially selected thickness can be obtained by cutting from a square timber A predetermined number of boards of a certain thickness can be cut without leaving a board with such a different thickness at the end of the dividing process of the squared timber that it can no longer be used for the intended purpose.
  • This object is achieved according to the invention for a method of the type mentioned at the outset by selecting a starting square timber whose starting thickness corresponds to the sum of the target thicknesses of the boards to be produced, the distance between the knife and the counterpressure element is set according to experience to an amount which is used to generate the leads the first board with its target thickness, the residual squared timber is measured in each case after cutting off one or more boards in its residual thickness, and the machine setting is changed based on the measurement of the residual squared timber, in particular the distance between the knife and the counter-pressure element, so that, based on experience, boards have a corrected target thickness sequence result while the pressure device is approached to the knife in discrete steps corresponding to the original target thicknesses of the boards before separating a further board and is subjected to a contact pressure during cutting.
  • the thickness of the individual board can be predicted at least with such accuracy by appropriately presetting the machine that the board is still acceptable for further processing. Rather, it is the rectified summation of the tolerances that can still be tolerated on the individual board, which means that the remaining board can no longer be used when dividing the squared timber.
  • the method according to the invention can be designed in such a way that when it is used, a sequence of thin boards, which have different thicknesses, is produced from a given squared timber, with no remaining board remaining which remains in the further processing step can no longer be used.
  • the wood hardly shrinks in the longitudinal direction of the trunk, but in the transverse direction the wood experiences a higher shrinkage in the direction of the annual ring course than transverse to the annual rings. Since the annual rings in boards made from a square timber are essentially perpendicular to the board surface, the angle of the annual ring course to the board surface becomes flatter the further the board is from the core of the trunk. This leads to the fact that boards from the center of the trunk shrink more in thickness when drying than boards from the edge region of a trunk. A shrinking of the width of the boards is less noticeable when manufacturing laminate products.
  • the aim of the production of laminate products is therefore to have boards of the same thickness available after drying. This can be achieved in that when the boards are cut, depending on the original position of the board in the trunk or squared timber, different thickness allowances are made which compensate for the different shrinkage of the boards during the drying process, so that boards are obtained with essentially the same thickness after drying.
  • an actual value results which may deviate from the target value that the residual squared timber should have after the boards have already been cut off.
  • this deviation is divided by the number of boards still to be produced from the residual squared timber, in order to obtain a correction value for each board, in order to correct the distance between the knife and the counter-pressure element compared to the otherwise fixed target setting when producing boards of the same thickness becomes.
  • the deviation of the thickness of the residual squared timber from the nominal value would basically have to be divided proportionally between the boards still to be produced and their respective thickness.
  • Such an assignment of the deviation to the individual boards is of course readily possible using known data processing means. Since the distance between the knife and the counter-pressure element has to be changed in each cut in the production of boards of different thicknesses, a corresponding computer-controlled correction can also be taken into account at the same time.
  • the method is also carried out when producing boards of different thicknesses in such a way that the deviation found on the remaining squared timber is divided by the number of boards still to be produced in order to assign an equal absolute correction to each board. Errors in such a correction are compensated for anyway by the feedback during the next residual timber measurement.
  • the measurement of the residual squared timber after one or a certain number of boards has been cut off can be carried out in different ways, for example by mechanical scanning by means of a suitable thickness scanner or by optical measurement. It is advantageous to ensure that the measuring method is oriented in such a way that it covers a representative board surface as far as possible and that the measurement result is not determined by individual projecting wood fibers or random indentations.
  • the aim is a measurement result, such as that obtained, for example, in a stationary manner by means of a slide gauge, which spans a certain board section with its measuring arm.
  • optical scanning methods for example using a laser beam, this can be achieved by an appropriate automatic evaluation of the scanning curve.
  • the detection and evaluation unit can be electronically or mechanically coupled directly to the corresponding infeed elements, so that the change in distance is carried out automatically by the detection and evaluation unit.
  • the advantage of the method according to the invention lies in the fact that for the complete division of a squared timber into usable boards, non-specific and possibly changing material parameters of the timber have to be measured in order to obtain a desired board thickness. It is only necessary to slightly change the distance between the knife and the counterpressure element by feeding back the respective thickness measurement of the residual squared timber. Since the corrections are small, the pressure device, which presses the squared timber against the knife and against the pressure element, remains unaffected by the changes. You can according to the target thickness reduction of the timber in predetermined steps for each Squared timber passage through the machine. The pressure exerted by the pressure device on the squared timber is exerted anyway by pneumatic or hydraulic cylinders arranged on the adjustable pressure device, which can absorb a certain amount of play in the thickness deviation of the squared timber when the contact pressure is regulated.
  • a device with only a single knife 12 and an opposing pressure device which essentially consists of the frame part 4 and the pressure rollers 17 which can be controlled by means of pressure cylinders 20 via swivel arms 18, is shown.
  • the squared timber 1 is passed through the machine in repetitive passes until it is completely divided into thin boards.
  • the design of the knife holder 11 which, in addition to the knife 12, has a pressure bar 13 arranged in front of the knife edge and guide surfaces 14 provided on both sides of the knife arrangement.
  • the knife holder part 11 lying in the forward direction or the pressure bar 13 is connected to a feed element 45, for example in a mechanical or electromotive manner.
  • a scanning or measuring device 46 Downstream of the cutting device 9 is a scanning or measuring device 46, which is shown only schematically in the accompanying drawing.
  • This device can be, for example, a mechanical thickness sensing device in the manner of a slide gauge or an optical measuring device based on a laser beam.
  • the scanning or measuring device 46 is connected via a signal line 47 to an electronic detection and evaluation unit 48. Which is in turn connected electronically 49 or mechanically to the feed element 45 for the knife holder 11 or the pressure bar 13.
  • the residual square timber 1 emerging from the cutting device 9 is Measurement device 46 is measured mechanically or optically and the measurement results are signaled to the detection and evaluation unit 48. This calculates the infeed value for the knife holder 11 or the pressure bar 13 from the values obtained and forwards them to the infeed element 45, which effects the infeed. In this way, the residual squared timber is measured after each machine run.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
EP90120454A 1989-11-01 1990-10-25 Verfahren zum spanlosen Aufteilen eines Kantholzes in Bretter gleicher Dicke Expired - Lifetime EP0426002B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90120454T ATE97604T1 (de) 1989-11-01 1990-10-25 Verfahren zum spanlosen aufteilen eines kantholzes in bretter gleicher dicke.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3936313 1989-11-01
DE3936313 1989-11-01
DE4026346 1990-08-21
DE19904026346 DE4026346A1 (de) 1989-11-01 1990-08-21 Verfahren zum spanlosen aufteilen eines kantholzes in bretter gleicher dicke

Publications (3)

Publication Number Publication Date
EP0426002A2 EP0426002A2 (de) 1991-05-08
EP0426002A3 EP0426002A3 (en) 1991-11-21
EP0426002B1 true EP0426002B1 (de) 1993-11-24

Family

ID=25886624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120454A Expired - Lifetime EP0426002B1 (de) 1989-11-01 1990-10-25 Verfahren zum spanlosen Aufteilen eines Kantholzes in Bretter gleicher Dicke

Country Status (8)

Country Link
US (1) US5052452A (enExample)
EP (1) EP0426002B1 (enExample)
JP (1) JP2626661B2 (enExample)
CA (1) CA2028767A1 (enExample)
DE (2) DE4026346A1 (enExample)
ES (1) ES2048934T3 (enExample)
FI (1) FI89879C (enExample)
NO (1) NO904727L (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035048A1 (de) * 1990-11-05 1992-05-07 Wurster & Dietz Maschf Vorrichtung zum trennen oder schlitzen eines starren schnittgutes, insbesondere holz
DE4122365A1 (de) * 1991-07-05 1993-01-07 Linck Masch Gatterlinck Verfahren zum herstellen von massivholz-verbundplatten
US5391624A (en) * 1992-02-10 1995-02-21 S. C. Johnson & Son, Inc. Thermosettable compositions
US5400843A (en) * 1992-04-14 1995-03-28 Gebruder Linck Maschinenfabrik "Gatterlinck" Gmbh & Co. Kg Apparatus for controlling the taper of wood boards formed by a chipless cutting operation
DE4244310C1 (de) * 1992-12-28 1993-10-28 Linck Masch Gatterlinck Verfahren und Anlage zum schneidenden Aufteilen eines Kantholzes in Bretter vorbestimmter Dicke
AT401635B (de) * 1993-08-17 1996-10-25 Linck Masch Gatterlinck Verfahren zum spanlosen erzeugen dünner bretter
CA2114672C (en) * 1993-11-12 1999-03-16 Aaron U. Jones Sawing apparatus
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
US7036411B1 (en) * 2002-06-21 2006-05-02 Hem, Inc. Active measurement and control system for a material cutting apparatus
US6769958B1 (en) * 2002-08-21 2004-08-03 Howard W. Grivna Material removal monitor
US6913512B2 (en) * 2002-08-21 2005-07-05 Howard W. Grivna Material removal monitor
FI119962B (fi) * 2006-08-31 2009-05-29 Ponsse Oyj Menetelmä ja sovitelma puukappaleen mittaamiseksi puunkäsittelykoneessa
WO2010085886A1 (en) * 2009-01-30 2010-08-05 Rene St-Cyr (1996) Inc. Manufacturing of tongue and groove profiles on hardwood floorboards
ITBZ20110014A1 (it) * 2011-04-11 2012-10-12 Albert Rabensteiner Rifilatrice per legno, in particolare squadratrice doppia.
CN104908127B (zh) * 2014-03-11 2017-12-22 姚本海 一种竹材制备方法及其应用结构
US10501943B1 (en) * 2016-02-19 2019-12-10 Custom Finish Wood Flooring Llc Systems and methods for installing flooring
CN117052266B (zh) * 2023-08-11 2024-01-16 江西立立联新型建材有限公司 一种塑木共挤型骨架的门扇的包边设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1954791A1 (de) * 1969-10-31 1971-05-06 Hurth Masch Zahnrad Carl Vorrichtung zum Messen und Steuern von Werkzeugmaschinen
CH613887A5 (en) * 1976-09-14 1979-10-31 Fischer Georg Brugg Oehler Ag Method and apparatus for machining the side edges of planar workpieces, in particular veneer sheets
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
DE3612036A1 (de) * 1986-04-10 1987-10-15 Wurster & Dietz Gmbh U Co Masc Verfahren und vorrichtung zum vermessen von baumstaemmen
DE3623237A1 (de) * 1986-07-10 1988-01-21 Wurster & Dietz Gmbh U Co Masc Verfahren und vorrichtung zum spanlosen zerlegen eines baumstammes in holzerzeugnisse
DE3623235A1 (de) * 1986-07-10 1988-01-21 Wurster & Dietz Gmbh U Co Masc Verfahren und vorrichtung zum zerlegen von baumstaemmen in holz-fertigerzeugnisse
DE3702909A1 (de) * 1987-01-31 1988-08-11 Linck Masch Gatterlinck Vorrichtung zur erzeugung von duennen brettern
US4879659A (en) * 1987-11-24 1989-11-07 Bowlin William P Log processing systems
US4941100A (en) * 1988-11-30 1990-07-10 Mcfarlane Arthur M G Automatic edger saw

Also Published As

Publication number Publication date
EP0426002A3 (en) 1991-11-21
FI905396A0 (fi) 1990-11-01
JPH03256702A (ja) 1991-11-15
CA2028767A1 (en) 1991-05-02
FI89879B (fi) 1993-08-31
NO904727L (no) 1991-05-02
DE59003608D1 (de) 1994-01-05
FI89879C (fi) 1993-12-10
ES2048934T3 (es) 1994-04-01
NO904727D0 (no) 1990-10-31
JP2626661B2 (ja) 1997-07-02
EP0426002A2 (de) 1991-05-08
DE4026346A1 (de) 1991-05-02
DE4026346C2 (enExample) 1992-04-30
US5052452A (en) 1991-10-01

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