WO1991013735A1 - Banc de sciage - Google Patents

Banc de sciage Download PDF

Info

Publication number
WO1991013735A1
WO1991013735A1 PCT/SE1990/000148 SE9000148W WO9113735A1 WO 1991013735 A1 WO1991013735 A1 WO 1991013735A1 SE 9000148 W SE9000148 W SE 9000148W WO 9113735 A1 WO9113735 A1 WO 9113735A1
Authority
WO
WIPO (PCT)
Prior art keywords
saw
prism
band
sledge
bottom plate
Prior art date
Application number
PCT/SE1990/000148
Other languages
English (en)
Inventor
Tommy Nordin
Original Assignee
Seven Invest Trä Ab
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 Seven Invest Trä Ab filed Critical Seven Invest Trä Ab
Priority to PCT/SE1990/000148 priority Critical patent/WO1991013735A1/fr
Publication of WO1991013735A1 publication Critical patent/WO1991013735A1/fr

Links

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
    • B27B15/00—Band or strap sawing machines specially designed for length cutting of trunks
    • B27B15/02—Band or strap sawing machines specially designed for length cutting of trunks with horizontally-guided saw blade, i.e. horizontal log band saw
    • 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
    • B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
    • B23D53/04—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting with the wheels carrying the strap mounted shiftably or swingingly, i.e. during sawing, other than merely for adjustment

Definitions

  • This invention relates to a saw mill for sawing logs, comprising a base on which there is arranged a stationary means for reception of a log, a saw device provided with an endless band saw blade, which device is carried by a means that is arranged on the base and is movable in relation to this one in a direction which is essentially parallel with the longitudinal direction of the imaginary log, the band saw blade having two essentially horisontal portions which during sawing have a motion direction that is essentially perpen ⁇ dicular to the intended motion direction of the means carrying the saw device.
  • the means carrying the band saw device comprises a sledge or the like, positioned in the saw mill on one side of the stationary means for reception of the log, and that the sledge is slidable on at least two elongated, essentially parallel prisms which function as a control and dolly means for the sledge with the band saw device and which has a longitudinal direction that is essentially parallel with the longitudinal direction of the imaginary log. Due to that fact a very good accessibility is received when laying logs into the saw mill and when taking out sawn boards from the same. Moreover, the service and the repair of the band saw device like, for instance, band exchanges are facilitated. Furthermore, a very good control of the sledge with its band saw device is received, which gives an extremely fine and straight saw cut.
  • Fig. 1 shows a plane view of the device according to the invention
  • Fig. 2 shows a view of the device seen in the direction of the arrows II-II
  • Fig. 3 shows a view of the device, seen in the direction of the arrows III-III.
  • Fig. 1 a view from above of the saw mill according to the invention.
  • the saw mill comprises a saw device 1 which is applied onto a sledge 2, which is displaceable there and back on an elongated base 3.
  • the sledge is driven by a gear motor via a chain.
  • the base comprises two elongated girders 4,5, which are positioned essentially parallel with and at a distance from each other. At even spaces along these ones are arranged pairs of pillars 6,7 (see Fig. 3), the two pillars of each pair being positioned just opposite each other, which pillars are intended to carry prism-like means 8,9, i.e. elongated, cylindrical bodies, the basic surfaces of which are polygons.
  • the cross section of the prisms is essentially square.
  • the sledge 2 with saw device 1 is intended to slide there and back.
  • the outermost prism 8 is so arranged that one of its four plane side portions faces the bottom plate 10 of the sledge 2
  • the inner prism 9 is so arranged that one of its corner portions, i.e. one of the pointed portions of the prism, faces the bottom plate 10.
  • the bottom plate 10 at its underside is provided with two small plates 11,12, which are arranged in V-form with the V directed downwards and are intended to cooperate with the prism 9 standing on edge.
  • a plastic piece 15,16 or the like preferably made of rubalone, is arranged between respective plate 11,12 and respective side portion 13,14 of the prism 9.
  • the primary purpose of these plastic pieces 15,16 is to give the sledge a good slide and to bring away saw dust.
  • the outer prism 8 is intended to cooperate with the outer part 17 of the bottom plate 10 of the sledge 2.
  • This part 17, as appears from Fig. 3, is folded around the prism and has a portion 18 extending in under the outer, lower edge portion 19 of the prism 8.
  • an angle iron 20 which via a plastic piece 21, preferably made of rubalone, is intended to be in contact with the lower edge portion 19 of the prism 8.
  • a plastic piece 23 is intended to be positioned between the upper side portion 22 of the prism 8 and the bottom portion 10 of the sledge.
  • the plastic pieces 21,23 have the same function as the plastic pieces 15,16 and in similarity with these ones are preferably intended to be fastened in the bottom plate 10 or parts 11,12,17,18 belonging to it.
  • the saw device 1 has an extension over the saw table, which is essentially perpendicular to the longitudinal direction of the saw table 24, the outer portion 26 of the saw device coming radially outside the saw table.
  • the saw table 24 with the log put on it can be raised or lowered in order to come in right position in relation to the saw device being above the saw table. This is made possible by means of a hydraulic lifting device 27 as is indicated in Fig. 2.
  • Fig. 3 the saw device 1 is shown more closely.
  • This device comprises a band saw having two wheel-like means 28,29, which are connected by an endless band saw blade 30.
  • the band saw blade is so arranged that it has two essentially horisontal portions, an upper band portion 31 and a lower band portion 32.
  • the operation of the band saw is made by means of an electric motor 33 which transmits the force to the wheel means 28 via a chain 34 or the like.
  • An essential part of this invention is that the saw head, i.e. the band saw itself with the frame portion is free-lying, i.e. the outer portion of the saw head projecting out over the saw table 24 is hanging feely over the saw table.
  • a recess 36 in the area above the lower band portion 32 and between the lower halves of the wheel means 28,29. This recess creates space for the log during the sawing procedure.
  • the device according to the invention is primarily intended to be used for sawing thick logs, logs having a diameter as large as 1,5 m can be sawn. Furthermore, the saw device is so designed that the different moments of the sawing procedure can be controlled by means of a computer. In this connection it is of importance that the computer operator can survey the different moments. This surveyance and control is facilitated by the fact that the saw head is free- lying.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

Cette invention consiste en un banc pour le sciage des grûmes, qui se compose d'un bâti supportant un chariot portant la grûme, et d'un dispositif de sciage constitué d'une scie à ruban montée sur un support qui se déplace par rapport au bâti dans un sens parallèle à l'axe longitudinal de la pièce à scier. Le ruban de la scie présente deux secteurs sensiblement horizontaux qui défilent perpendiculairement au sens de déplacement du support de scie. Selon l'invention, le support de scie (1) comporte un traîneau (2) ou un dispositif analogue installé à côté du chariot (24) portant la grûme. Ce traîneau coulisse le long de deux rails parallèles (8, 9) qui font office de guide ou travelling pour le support de scie, selon un axe parallèle à celui de la pièce à scier.
PCT/SE1990/000148 1990-03-08 1990-03-08 Banc de sciage WO1991013735A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE1990/000148 WO1991013735A1 (fr) 1990-03-08 1990-03-08 Banc de sciage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1990/000148 WO1991013735A1 (fr) 1990-03-08 1990-03-08 Banc de sciage

Publications (1)

Publication Number Publication Date
WO1991013735A1 true WO1991013735A1 (fr) 1991-09-19

Family

ID=20378258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000148 WO1991013735A1 (fr) 1990-03-08 1990-03-08 Banc de sciage

Country Status (1)

Country Link
WO (1) WO1991013735A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954037A (en) * 1975-07-09 1976-05-04 Emilio Retana Rodriguez Linear motor band saw
DE2731704A1 (de) * 1976-07-23 1978-01-26 Hitachi Ltd Praezisionstisch fuer die ausfuehrung einer zweidimensionalen bewegung
FR2453708A1 (fr) * 1979-04-09 1980-11-07 Kotte Eberhard Machine-outil dont le chariot et/ou la poupee sont translatables sur le banc au moyen d'au moins un guide prismatique
EP0051989A1 (fr) * 1980-11-06 1982-05-19 Paul Elsey Scie à ruban transportable
GB2124109A (en) * 1981-08-04 1984-02-15 Aioi Seiki Kk Apparatus for positioning and clamping work-clamp pallet for machine tools
SE461455B (sv) * 1988-10-31 1990-02-19 Peter Mildner Traebearbetningsmaskin omstaellbar till ett flertal bearbetningsoperationer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954037A (en) * 1975-07-09 1976-05-04 Emilio Retana Rodriguez Linear motor band saw
DE2731704A1 (de) * 1976-07-23 1978-01-26 Hitachi Ltd Praezisionstisch fuer die ausfuehrung einer zweidimensionalen bewegung
FR2453708A1 (fr) * 1979-04-09 1980-11-07 Kotte Eberhard Machine-outil dont le chariot et/ou la poupee sont translatables sur le banc au moyen d'au moins un guide prismatique
EP0051989A1 (fr) * 1980-11-06 1982-05-19 Paul Elsey Scie à ruban transportable
GB2124109A (en) * 1981-08-04 1984-02-15 Aioi Seiki Kk Apparatus for positioning and clamping work-clamp pallet for machine tools
SE461455B (sv) * 1988-10-31 1990-02-19 Peter Mildner Traebearbetningsmaskin omstaellbar till ett flertal bearbetningsoperationer

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