EP1145811A1 - Vorrichtung zum besäumen von Rohbrettern - Google Patents

Vorrichtung zum besäumen von Rohbrettern Download PDF

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Publication number
EP1145811A1
EP1145811A1 EP20010420093 EP01420093A EP1145811A1 EP 1145811 A1 EP1145811 A1 EP 1145811A1 EP 20010420093 EP20010420093 EP 20010420093 EP 01420093 A EP01420093 A EP 01420093A EP 1145811 A1 EP1145811 A1 EP 1145811A1
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EP
European Patent Office
Prior art keywords
board
edger
laser lines
boards
laser
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.)
Withdrawn
Application number
EP20010420093
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English (en)
French (fr)
Inventor
Georges Brun
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1145811A1 publication Critical patent/EP1145811A1/de
Withdrawn legal-status Critical Current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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B27B1/007—Methods for subdividing trunks or logs essentially involving sawing taking into account geometric properties of the trunks or logs to be sawn, e.g. curvature
    • 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
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • B27B31/06—Adjusting equipment, e.g. using optical projection
    • 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
    • Y10T83/828—With illuminating or viewing means for work

Definitions

  • the present invention relates to machines for sawing wood, used in sawmills. It relates, more particularly, to a device for edging so-called flaky boards, which optimizes the work of a multi-blade edger.
  • the classic edging system is as follows: boards arrive transversely, and are positioned by an operator, in a correct position in length, with the arrow visible from above. Each board then goes under a scanner, which is an opto-electric device to measure the contour of the board. Then this board is inserted, directly at the exit of the scanner, in a edger with blades multiple, which is, in general, a machine using several saw blades can be moved transversely, a computer linked with the scanner having previously positioned the blades in a position allowing a supposed optimal obtaining of squared pieces of wood on four sides.
  • Document US 4196648 describes a sawing installation with a fairly rudimentary scanner, located on the whole feeder of an edger, the scanner measuring here only one of the two longitudinal edges of a board.
  • This installation includes, at a intermediate station before entering the edger, a crew mobile with two saws which delineates the board on one of its two longitudinal edges, to form a straight edge which will serve as positioning reference, before the introduction of this board in the edger.
  • the projection of laser lines on the board, at a post located downstream from the aforementioned intermediate post, is not used to position the edger blades relative to two irregular edges and flabby of the board.
  • the presence of the intermediate station with mobile equipment with two saws, guided on rails makes the installation of sawing of document US 4196648 complex, bulky and expensive, and it reduces the production rate of this sawing installation.
  • document US 4,977,805 describes a device for positioning of edger blades, according to programs pre-established, with emission of laser lines in correspondence with blade positions.
  • the device here is limited to two blades and two lines laser, so it does not solve the issue of removing defects located in the heart of the wood.
  • this device does not include any scanner to measure the geometric characteristics of the edges of boards, before entering the edger.
  • the positioning of laser lines and the possible "planing" of the board remain manual operations.
  • the device of this last document is therefore not automated, in its function of taking into account edge irregularities longitudinal boards, and anyway this device can not take takes into account the defects of the heart of the wood.
  • the present invention aims to avoid these drawbacks, by providing a simple, compact and economical device, allowing a check and possible correction, for the two longitudinal edges of the boards, and able to take into account defects in the heart of the wood, this with a high production rate.
  • the device for trimming loose planks comprises transfers boards located upstream of the multi-blade edger and used for the supply thereof, more particularly between a scanner measuring the contour of the boards, in particular the profile of their longitudinal edges, and an entry table in the edger, an intermediate table of preparation, with aligning guides allowing to "plan" each board, intermediate table facing which means are arranged emission of at least two laser beams, directed on the site of a board stopped on the preparation table, means manually remote controllable being provided to modify the positioning of the laser lines projected on the board, and other means being provided for the automatic taking into account of corrected positions laser lines by a corresponding positioning of the blades of the edger, said laser lines comprising at least two laser lines positioned at the limit of the two flank zones of the board, corresponding to its two rough longitudinal edges.
  • the invention proposes, on leaving the scanner, to stop each board in an intermediate position, where it is planed and where several light lines, preferably four laser lines, initially automatically positioned by the installation computer, allow to a suitably posted operator to visualize exactly the diagram of cutting established by this calculator, from the measurements provided by the scanner and computer programming. If the operator judges that, by following a defect in structure or appearance of the board or an error appreciation of the geometry of this board by the computer, it is necessary correct the positions of the cutting lines, he will be able to reposition the laser lines, and the computer will take into account the position information corrected by laser lines, then reposition the edger blades as desired by the operator, when the same board is introduced into the edger.
  • several light lines preferably four laser lines
  • the interactive device, object of the invention makes it possible to optimize the operation of a edger, by taking into account, in the most exact way, not only the two zones of flache, maintained beyond the two outer laser lines, but also defects in the heart of the wood, isolated between the two interior laser lines.
  • Figure 1 shows, as a whole, an installation comprising an edger 2 with four circular blades 3, parallel and transversely movable.
  • edger 2 with four circular blades 3, parallel and transversely movable.
  • F1 this equipment also being shown in side view in Figure 2.
  • a control station 16 where an operator takes place.
  • a transmitter assembly 17 In front of the table preparation 10, is still disposed a transmitter assembly 17, ensuring the simultaneous transmission, towards this preparation table 10, of four parallel laser beams.
  • a delimitation separator 18 Downstream of edger 2, in line with it, is arranged a delimitation separator 18, with protective tunnel, which is followed by a train of rollers 19 with ejectors 20 and protection tunnel, ensuring the lateral exit of the finished products, following an arrow F2.
  • the installation also includes a hydraulic unit 21 and electrical cabinets 22 and 23.
  • the raw boards are still loose arriving according to arrow F1, are transferred and possibly returned by the power transfer element 4, then are transferred further by the passage transfer element 8, then passing under the scanner 9 which measures exactly the contours of these boards, including the profile of their two longitudinal edges.
  • the boards thus arrive, successively, on the preparation table 10, where they are stopped in being positioned by the pressing arm 11 and by the aligning guides 12, which allow you to "plan" each board.
  • the transmitter assembly 17 simultaneously projects on the board 24 four laser lines L1, L2, L3 and L4 oriented substantially along the longitudinal direction of this board 24, the initial positions of the lines laser being determined by the measurement of the board 24 carried out using the scanner 9, and by programming the installation computer.
  • the operator placed at control station 16, then performs a visual control and, using appropriate remote controls provided for in this station 16 and acting on the transmitter assembly 17, it can move the four laser lines L1, L2, L3 and L4.
  • the repositioning of four laser lines L1, L2, L3 and L4 is performed, by the operator, so to take account of the two drop zones 25 and 26 of the board 24, corresponding to its two rough longitudinal edges, as well as defects such as those indicated in 27 and 28 of the heart, quite usually encountered in the heart of the woods region.
  • the two outer laser lines L1 and L4 are positioned respectively at the limit of the two areas of arrow 25 and 26, and the two interior laser lines L2 and L3 are positioned closer to defects 27 and 28 of the heart, on both sides of these defaults. This positioning defines the maximum optimized widths D1 and D2 of finished products, obtainable from raw board 24.
  • the board 24 is directed towards the entry table 13, where it is positioned by the clamping arm 14 and by the aligner guides 15, then this board 24 is introduced through the edger 2.
  • the four blades 3 movable transversely from edger 2 are automatically positioned according to choice previously performed by the operator using the four L1 laser lines, L2, L3 and L4, and these blades 3 ensure the longitudinal sawing of the board flaker in an optimized way.
  • the rendered products thus obtained reach the line separator 18, where they are separated of the others, and finally they arrive on the train of rollers 19 where the ejectors 20 cause their exit along arrow F2.
  • edger blades multiplying or reducing the number of edger blades, with multiplication or reduction corresponding to the number of laser lines projected onto the boards, by example by providing an edger with six movable blades, and a set of six laser lines at the preparation table, or by applying the same device to an edger using blades of a type other than circular blades.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Laser Beam Processing (AREA)
EP20010420093 2000-04-14 2001-04-13 Vorrichtung zum besäumen von Rohbrettern Withdrawn EP1145811A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004878A FR2807693B1 (fr) 2000-04-14 2000-04-14 Dispositif de delignage de planches flacheuses
FR0004878 2000-04-14

Publications (1)

Publication Number Publication Date
EP1145811A1 true EP1145811A1 (de) 2001-10-17

Family

ID=8849295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010420093 Withdrawn EP1145811A1 (de) 2000-04-14 2001-04-13 Vorrichtung zum besäumen von Rohbrettern

Country Status (4)

Country Link
US (1) US20020000148A1 (de)
EP (1) EP1145811A1 (de)
AU (1) AU3521401A (de)
FR (1) FR2807693B1 (de)

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US6755107B2 (en) * 2001-05-18 2004-06-29 One World Technologies Lmt. Miter saw having a light beam alignment system
US20060116787A1 (en) * 2002-04-18 2006-06-01 Etter Mark A Power tool control system
US7369916B2 (en) * 2002-04-18 2008-05-06 Black & Decker Inc. Drill press
US7359762B2 (en) * 2002-04-18 2008-04-15 Black & Decker Inc. Measurement and alignment device including a display system
US8004664B2 (en) 2002-04-18 2011-08-23 Chang Type Industrial Company Power tool control system
US20060101961A1 (en) * 2002-04-18 2006-05-18 Etter Mark A Power tool control system
US20030202091A1 (en) * 2002-04-18 2003-10-30 Jaime Garcia Modular assisted visualization system
US20060076385A1 (en) * 2002-04-18 2006-04-13 Etter Mark A Power tool control system
US20060075867A1 (en) * 2002-11-27 2006-04-13 Etter Mark A Laser apparatus
US20030233921A1 (en) * 2002-06-19 2003-12-25 Garcia Jaime E. Cutter with optical alignment system
US20050160895A1 (en) * 2002-10-31 2005-07-28 Garcia Jaime E. Dual bevel table saw
US7137327B2 (en) * 2002-10-31 2006-11-21 Black & Decker Inc. Riving knife assembly for a dual bevel table saw
US7290474B2 (en) * 2003-04-29 2007-11-06 Black & Decker Inc. System for rapidly stopping a spinning table saw blade
US20060101958A1 (en) * 2003-07-31 2006-05-18 Garcia Jaime E Table saw
TW200615080A (en) * 2004-06-02 2006-05-16 Black & Decker Inc Optical alignment system for power tools
US7243440B2 (en) * 2004-10-06 2007-07-17 Black & Decker Inc. Gauge for use with power tools
WO2009008791A1 (en) * 2007-07-09 2009-01-15 Nyland Design Ab Method of manufacturing edge glued laminated panels and edge glued laminated panels manufactured according to said method
US10274311B2 (en) 2016-10-19 2019-04-30 Columbia Insurance Company Three dimensional laser measurement device for quality control measurements
CN114274005A (zh) * 2021-11-16 2022-04-05 惠州市宏胜机电设备有限公司 自动裁板磨边线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476238A (en) * 1922-02-20 1923-12-04 Sumner M Bump Indicator for edging saws
US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
US4977805A (en) * 1986-04-10 1990-12-18 Corley Manufacturing Company Edging apparatus
FR2744664A1 (fr) * 1996-02-08 1997-08-14 Lbl Brenta Cd Deligneuse a lames dentees circulaires reglables en ecartement
US5819622A (en) * 1996-10-15 1998-10-13 Quick; Bradley S. Automated infeed system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476238A (en) * 1922-02-20 1923-12-04 Sumner M Bump Indicator for edging saws
US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
US4977805A (en) * 1986-04-10 1990-12-18 Corley Manufacturing Company Edging apparatus
FR2744664A1 (fr) * 1996-02-08 1997-08-14 Lbl Brenta Cd Deligneuse a lames dentees circulaires reglables en ecartement
US5819622A (en) * 1996-10-15 1998-10-13 Quick; Bradley S. Automated infeed system

Also Published As

Publication number Publication date
AU3521401A (en) 2001-10-18
US20020000148A1 (en) 2002-01-03
FR2807693B1 (fr) 2002-08-02
FR2807693A1 (fr) 2001-10-19

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