EP1148981A1 - Procede de sciage d'une grume et appareil pour scie circulaire ou scie a ruban - Google Patents

Procede de sciage d'une grume et appareil pour scie circulaire ou scie a ruban

Info

Publication number
EP1148981A1
EP1148981A1 EP00901159A EP00901159A EP1148981A1 EP 1148981 A1 EP1148981 A1 EP 1148981A1 EP 00901159 A EP00901159 A EP 00901159A EP 00901159 A EP00901159 A EP 00901159A EP 1148981 A1 EP1148981 A1 EP 1148981A1
Authority
EP
European Patent Office
Prior art keywords
log
saw
circular
sawed
traveling table
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Withdrawn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
EP00901159A
Other languages
German (de)
English (en)
Inventor
Rauli Kemppi
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
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 Individual filed Critical Individual
Publication of EP1148981A1 publication Critical patent/EP1148981A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
    • B23D59/002—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade for the position of the saw blade
    • B23D59/003—Indicating the cutting plane on the workpiece, e.g. by projecting a laser beam
    • 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
    • B27B15/00—Band or strap sawing machines specially designed for length cutting of trunks
    • B27B15/06—Band or strap sawing machines specially designed for length cutting of trunks in combined arrangement with circular saws for performing simultaneously several sawing procedures
    • 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
    • B27B15/00—Band or strap sawing machines specially designed for length cutting of trunks
    • B27B15/08—Band or strap sawing machines specially designed for length cutting of trunks with a plurality of band saw blades
    • 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
    • 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
    • B27B7/00—Sawing machines working with circular saw blades, specially designed for length sawing of trunks
    • B27B7/02—Sawing machines working with circular saw blades, specially designed for length sawing of trunks by making use of circular saws mounted substantially at right angles, e.g. vertically and horizontally
    • 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
    • B27B7/00—Sawing machines working with circular saw blades, specially designed for length sawing of trunks
    • B27B7/04—Sawing machines working with circular saw blades, specially designed for length sawing of trunks by making use of a plurality of circular saws mounted on a single spindle; Arrangements for adjusting the mutual distances

Definitions

  • the invention relates to a method used in sawing a log with a circular sawmill or band saw, in which a log is placed on a moving traveling table, and in which the traveling
  • Ki to a circular sawmill or band saw accessory, defined in the introductory section of the first of the accessory claims.
  • Boards and planks are sawed out of logs on single-blade circular sawmills or band saws, such that a traveling table and the log attached to it are moved against the blade,
  • one saw-cut has been sawed, they are moved back for the following work phase and to saw the saw-cut.
  • One saw-cut is sawed with one to-and-fro movement.
  • the log has to be turned to different positions, and depending on the thickness of the log and the width and thickness of the sawed lumber, the log has to be moved several times back and forth. For example, when sawing a log from which two o planks and six thin boards can be obtained, the log or part of the log is hastened to move on the circular sawmill or band saw to and fro 23 times.
  • the object of the invention is to provide a log sawing method, whereby the disadvantages associated with current methods will be eliminated. Furthermore, the object of the invention is to provide a method whereby sawing is expedited and whereby sawing can be made profitable by taking into account the difference in diameter between the top end and trunk end of the log. Additionally, the object of the invention is to provide a circular sawmill or band saw accessory, which is easy to use, simple in its structure and advantageous in use. Furthermore, the object of the invention is to provide an accessory, whereby the job of the operator of the circular sawmill or band saw will be made easier.
  • a lifting device on lop of which is placed the top end of the log, is mounted onto the log's traveling table to adjust the elevation of the log.
  • the top end of the log and its elevation in relation to the blades can be adjusted with the lifting device.
  • the lifting device is located at the front end or at the back end of the traveling table because of the device and its use.
  • the log can be positioned either with the trunk end in the front, or with the top end in the front, depending on which end oi " the traveling table the lifting device has been mounted.
  • two or more cross-wise saw-cuts are simultaneously sawed by two or more secondary circular saws, which have been mounted perpendicularly in relation to the primary blade, whereby one or more sawed lumber unit(s) is (are) obtained with one to-and-fro movement of the log.
  • the secondary circular saws are fixed to the front of the blade of the circular sawmill or band saw and the blades of the secondary circular saw saw the cross-wise saw-cuts before the sawed lumber unit is cut off of the log. It is also possible to fix the secondary circular saws to the back of the blade. Such structures are simple. In both cases, the secondary circular saws are mounted such that the tip of the secondary circular saw blade extends to the saw-cut which is made by the primary saw blade.
  • secondary circular saws are adjusted in relation to one another with an adjuster to regulate the width of the unit of sawed lumber.
  • the width of the unit of sawed lumber can be regulated easily and simply in the most appropriate way for the purpose by taking the measurements of the log into account.
  • the secondary circular saws are adjusted with a lifting mechanism along the vertical width of the log to control the vertical position of the unit of sawed lumber.
  • the secondary circular saws can be moved to the desired level along the vertical width of the log, so that a sawed piece of wood 5 can be cut in the desired width from the desired place on the log.
  • indicating devices located on the secondary circular saws indicate the position of the blades of the secondary circular saws on the surface of the log.
  • This kind of an indicating device can be an indicating o device, known as such, for example, different indicating devices based on the use of lights, such as a laser light indicator.
  • the secondary circular saws and log can be guided such that a unit of sawed lumber, cut in the desired width and from the desired place on the log, can be sawed with the secondary circular saws.
  • a circular sawmill or band saw accessory formed in accordance with the invention comprises a lifting device which is fixed to the log's traveling table and which is for adjusting the elevation of the top end of the log. The top end of the log can be adjusted to the desired elevation with the lifting device.
  • the accessory comprises an adjuster for adjusting the secondary circular saws in relation to one another in order to regulate the width of the unit of sawed lumber. Additionally, the accessory comprises a lifting mechanism for regulating the secondary circular saws to control the vertical positioning on the log of the unit of sawed lumber. 5
  • Figure 1 illustrates a certain application of a circular sawmill, as viewed from the side, in which a method applied in accordance with the invention is being used, and which includes an accessory formed in accordance with the invention
  • Figure 2 illustrates a circular sawmill formed in accordance with Figure 1, as viewed from above,
  • Figure 3 illustrates a circular sawmill formed in accordance with Figure 1, as viewed from the end,
  • Figure 4 illustrates a circular sawmill formed in accordance with Figure 1 , as viewed fiotn the end, to which is fixed a third secondary circular saw blade, and
  • Figures 5 and 6 illustrate the position of a log on the traveling table and a log being sawed using a certain specialized sawing method applied in accordance with the invention.
  • the figures illustrate a single-blade circular sawmill which comprises a frame 5, a blade 1, a blade gear 6, a moving traveling table 4, an adjustable control 2 and an impression roller 3 which are attached to and/or supported on the frame.
  • the log to be sawed 1 is placed on the moving traveling table 4 during sawing and the log and the table are moved in relation to the circular saw blade and frame in a way known as such.
  • the control 2 is attached adjustably in a conventional way to the frame 5.
  • the adjustable control 2 defines the thickness of the sawed lumber.
  • the impression roller 3 is designed in a way known as such to press the log against the adjustable control 2. When the log is sawed, it is between the adjustable control and the impression roller.
  • a circular sawmill formed according to the invention additionally comprises two secondary circular saws 9, 10, which are, in this application, located in front of the primary blade next to the control 2 and attached to the frame 5.
  • the device comprises a lifting plate 11, which functions as a lifting device, and which, in this application, is located in the front of the traveling table, a turning axle 12, which is attached to the lifting plate, and an ami 13, which is attached to the axle, and by which the lifting plate 1 1 is controlled.
  • the device comprises a self-closing clamping device 14 which is attached to the axle, and which clamps the lifting plate in the position to which it has been adjusted.
  • the lifting plate adjusts the position of elevation of the top end of the log to the desired height. It is also possible to move the lifting plate and the log during the sawing, whereby the mechanism can saw curved pieces from the log.
  • Figure 3 illustrates a transfer gear 15, by which the lower secondary circular saw 10 is moved into the sawing position. Additionally, the figure illustrates the gear 16 of the lower circular saw and the power transmission 17 from the gear to the blade of the circular saw.
  • the upper circular saw 9 has a corresponding device, but they are not numbered.
  • the blade gear is a conventional device, such as a hydraulic motor, electric motor, pneumatic motor, etc.
  • this figure illustrates an adjuster 20, by which the distance between the upper and lower secondary circular blades is adjusted, hereby determining or defining the sawed width. Secondary blades can be turned into and out of the sawing position in a way appropriate for the purpose, for example, by mechanically lifting, pneumatically, hydraulically, or electrically.
  • the figure also illustrates a lifting mechanism 21, by which both secondary circular saws are simultaneously lifted.
  • This mechanism controls the elevation of the sawed wood in respect to the log being sawed, and with it, curves can be sawed by moving t e secondar ' circular saws during the sawing.
  • the lifting mechanism can be, for example, servo cylinders, servo engines, mechanically operated lifts or other mechanism appropriate for the purpose.
  • the device additionally comprises indicating devices (not illustrated in the figures) which are laser lights, or corresponding lights, which indicate the positionings of the sawing blades on the surface of the log.
  • Secondary circular saws formed in accordance with Figure 4 have a third blade 28, whereby the sawed lumber can be more effectively sawed with the secondary circular saws.
  • the log 8 When using a method carried out in accordance with the invention and a circular sawmill in accordance with the figures, the log 8 is placed on the moving traveling table 4 with the top end towards the blades, and the desired elevation of the top end of the log is adjusted according to Figures 5 and 6 using the lifting plate 1 1.
  • the lifting plate and the parts attached to it also move with the traveling table when sawing is taking place.
  • the spaces between the blades of the secondary circular saws 9, 10, are adjusted as desired, as is their elevation from the level of the traveling table.
  • the secondary circular saws are mounted such that the tip of the blade of the secondary circular saws extends to the saw-cut being made by the primary saw blade. While the sawing is being done, the traveling table is moved with the log attached to it against the blades.
  • saw-cuts 23 and 24 can first be sawed, and then saw-cuts 25, 26, 27, whereby two separate units of prepared sawed lumber are obtained.
  • Figures 5 and 6 illustrate special sawing options, for example, when sawing with the log surface and a rotten core should be left unsawed.
  • the sapwo ⁇ d of a butt log is the best raw material and the core is bad, so a method and a device formed in accordance with the invention also enable this kind of option.
  • the ways to saw are numerous and they can vary considerably in different cases.
  • Secondar ' circular saws, or circular saws can also be moved under the safety guard of the ciicular sawmill control if one chooses not to use the secondary circular saw.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne un procédé de sciage d'une grume à l'aide d'une scie circulaire ou d'une scie à ruban. La grume (8) est disposée sur une table mobile (4) qui est déplacée suivant un mouvement alternatif assurant ainsi la coupe (27) de la grume à l'aide d'une scie circulaire ou d'une lame (1) de scie à ruban. Deux ou plusieurs scies circulaires auxiliaires (9, 10) sont perpendiculaires à la première lame (1), deux ou plusieurs découpes horizontales (23, 24, 25, 26) sont effectuées simultanément pour obtenir une or plusieurs unités de bois de sciage (22) grâce au mouvement alternatif. L'invention concerne en outre un accessoire pour scie circulaire ou scie à ruban tel que décrit dans les revendications correspondantes. Selon un procédé mis en oeuvre, la table mobile (4) pour la grume (8) est montée à l'aide d'un dispositif élévateur (11) sur lequel repose la grume et grâce auquel est assuré le réglage de l'extrémité supérieure de la grume par rapport aux lames. Selon une variante, la table mobile (4) comprend un dispositif élévateur (11) permettant de régler l'élévation de l'extrémité supérieure de la grume.
EP00901159A 1999-01-07 2000-01-05 Procede de sciage d'une grume et appareil pour scie circulaire ou scie a ruban Withdrawn EP1148981A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI990012A FI106105B (fi) 1999-01-07 1999-01-07 Menetelmä tukin sahauksessa ja kenttäsirkkelin tai vannesahan lisälaite
FI990012 1999-01-07
PCT/FI2000/000007 WO2000040381A1 (fr) 1999-01-07 2000-01-05 Procede de sciage d'une grume et appareil pour scie circulaire ou scie a ruban

Publications (1)

Publication Number Publication Date
EP1148981A1 true EP1148981A1 (fr) 2001-10-31

Family

ID=8553268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00901159A Withdrawn EP1148981A1 (fr) 1999-01-07 2000-01-05 Procede de sciage d'une grume et appareil pour scie circulaire ou scie a ruban

Country Status (4)

Country Link
EP (1) EP1148981A1 (fr)
AU (1) AU2112800A (fr)
FI (1) FI106105B (fr)
WO (1) WO2000040381A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101590916B1 (ko) * 2014-04-24 2016-02-03 영림임업 주식회사 목재 절단장치
CA3037006C (fr) * 2019-03-18 2020-09-29 Norwood Industries Inc. Rebord protecteur a cliquet pivotant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532842A (en) * 1982-09-29 1985-08-06 Mcfarlane Arthur M G Tiltable edger saw mechanism
US4772001A (en) * 1987-06-01 1988-09-20 Hurdle Jr Ennis J End log lifter
AT397224B (de) * 1991-05-14 1994-02-25 Wolf Systembau Gmbh & Co Kg Verfahren und vorrichtung zum herstellen von vierkantern aus baumstämmen od. dgl.
DE4316472A1 (de) * 1993-05-17 1994-11-24 Linck Masch Gatterlinck Vorrichtung zum Herstellen von Holzerzeugnissen aus Stammholz
SK280288B6 (sk) * 1994-07-06 1999-11-08 Wep Trading Zariadenie na pozdĺžne spracovanie drevnej hmoty

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0040381A1 *

Also Published As

Publication number Publication date
FI106105B (fi) 2000-11-30
FI990012A0 (fi) 1999-01-07
AU2112800A (en) 2000-07-24
WO2000040381A1 (fr) 2000-07-13
FI990012L (fi) 2000-07-08

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