EP2248643A1 - Dispositif de sciage à couper des troncs en bois de chauffage - Google Patents

Dispositif de sciage à couper des troncs en bois de chauffage Download PDF

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Publication number
EP2248643A1
EP2248643A1 EP10447013A EP10447013A EP2248643A1 EP 2248643 A1 EP2248643 A1 EP 2248643A1 EP 10447013 A EP10447013 A EP 10447013A EP 10447013 A EP10447013 A EP 10447013A EP 2248643 A1 EP2248643 A1 EP 2248643A1
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EP
European Patent Office
Prior art keywords
sawing
trunks
transporting
transporting means
firewood
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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.)
Granted
Application number
EP10447013A
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German (de)
English (en)
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EP2248643B1 (fr
Inventor
Pol Verschatse
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Individual
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Individual
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Publication of EP2248643A1 publication Critical patent/EP2248643A1/fr
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    • 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
    • B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • B27B25/04—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed chains or belts
    • 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
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/16—Saw benches
    • B27B5/22—Saw benches with non-feedable circular saw blade
    • B27B5/228—Cross-cutting automatically laterally-fed travelling workpieces; Reducing lumber to desired lengths

Definitions

  • This invention concerns a device for sawing automatically wood trunks in such a way that they will be cut in almost equally sized firewood by continuous feeding said trunks, moving transversally on a conveying device to sawing blades. More particularly this invention describes a device that enables to saw continuously irregular shaped firewood trunks by a manual or automatic feeding and to position said firewood trunks on a conveying device in such a way that said trunks will be pressed down in order to saw them in almost equally sized firewood trunks.
  • the cleaved wood trunks are delivered with a length of approximately 1,20 m and need to be sawed to a length of about 30 cm.
  • the consumer can choose to saw the trunks on size himself or order them already sawed. In the former case, the consumer will use an axe or a chain saw to cut the trunks on size. In the latter case, the supplier will saw the trunks on size. The supplier needs to size said trunks as many as possible in the shortest time.
  • Sawing devices to saw automatically firewood are generally known in the state of the art. A few problems arise herewith. There is a difference between sawing devices whereby the consumer needs to saw the trunks one-by-one himself by placing them on a conveying device or by feeding multiple trunks simultaneously in order to saw them automatically.
  • EP1992461 describes such a device of the first type, whereby safety risks have to be considered for inserting and sawing the trunks.
  • the user inserts the wood trunks one by one into the sawing apparatus, provided with a safety hood in order to prevent that his hands could touch the sawing blade during operation.
  • DE1225840 describes an automatic sawing device, that enables to saw multiple wood trunks, fed by a conveying belt with separating means in order to saw said trunks by multiple sawing means, provided on different distances between the conveying belts.
  • This invention concerns an automatic sawing device, solving a few problems.
  • the first problem concerns the speed of feeding and the number of wood trunks that will conveyed simultaneously to the sawing means. Sawing said trunks in equally sized firewood serves another problem. When the trunks are badly positioned on the conveying device, it increases the risk of sawing said trunks in irregular sized firewood with loss as result.
  • Another important problem concerns the irregular shape of the firewood trunks during continuous feeding nearby the sawing blades. Said sawing device could be blocked or sawn unequally due to sliding or tilting wood trunks. Finally, the sawing device needs to be compact and mobile in order to install it on the preferred location.
  • wood blocks will be lined against a plate, like in US4507998 .
  • This device is further provided with a steel band between the sawing blades in order to push down the wood blocks.
  • Lateral guiding means for wood blocks are known from DE102004049699 .
  • US4501178 describes inclined conveying chains interacting with the sawing blade, which enables to push the sawed blocks from said sawing blade in order to prevent further contact with the sawing teeth.
  • the foregoing devices concern positioning means for the wood blocks, interacting with the sawing blade.
  • EP1674221 has a pair of transporting means for conveying planks through a sawing blade, consisting of upper and lower transporting means, driven by separated motors and wherein the transporting means are provided with a friction liner. It saws flat planks and both transporting means are driven by separated motors.
  • US1561476 concerns a device for transporting wooden planks through a gang of rotary saws. It comprises a flexible belt, consisting of wooden slats and friction strips. Said belt is pressed above the wooden planks by a series of spaced roller weights or bearing rollers.
  • US2117641 describes a device for holding boards or strips pressed to be delivered to cutting blades. It concerns a flexible belt made of rubber.
  • FR920772 illustrates a device for holding wooden blocks during cutting on a transport belt. It uses sacks, filled with sand or plumb granules to press said flexible belt against the wooden blocks. The foregoing documents describe holding devices for sawing regular wooden planks or blocks, but not for irregular shaped firewood trunks.
  • This invention concerns an automatic sawing device for sawing irregular shaped trunks of firewood, provided with first transporting means, transporting continuously firewood trunks transversally according to at least two sawing blades and second transporting means with pressing means, provided above said first transporting means in front and through the sawing blades in order to grip and guide the wood trunks through the sawing means, targeted to cut equally sized firewood trunks.
  • This sawing device uses toothed transporting chains for transporting said trunks through the sawing device. Transporting and conveying means in this invention are considered as the same and will be used arbitrary.
  • This invention is characterised in that the upper and lower transporting means guide the trunks through the sawing device, in order to position the trunks and saw them in equally sized firewood, independent of their shape.
  • the pressing means, provided in the upper transporting means, serve to press continuously on the trunks. Consequently, this has the advantage that the trunks do not need to be put straight transversally on the lower transporting means.
  • This invention is further characterised by using a single motor for driving both transporting means.
  • This device enables to feed continuously, manually or automatically trunks, without blocking the device due to sliding or tilting. The trunks do not need to be positioned on a fixed distance on said lower transporting means.
  • This sawing device is compact, which serves to install it in a small space and easy to displace to another location.
  • a supplementary conveying belt can be added to the lower transporting means for feeding automatically the trunks to the transporting means.
  • the sawing device(1) consists of a frame(2), additionally provided with wheels(3), first transporting means(4) for conveying trunks to sawing means(6) and in front of said sawing means(6), second transporting means(5) above the trunks, provided with pressing means(7) in order to convey and position the trunks through the sawing means(6).
  • Said sawing device(1) is provided with control means(8) for driving the motors.
  • Control means(8) serves to activate and stop said motors of the sawing means(6) as well as for the transporting means(4,5).
  • First(4) and second transporting means(5) are driven by a single motor(1101), like illustrated on figure 3 , supported by a transmission(11). The sawed firewood will be separated by an inclined guiding plate(9) after sawing.
  • Figure 1 further illustrates a sawing device(1) provided with a cavity(10) for collecting sawdust and wood fibres with the option to attach a suction device.
  • Said cavity(10) could be a rigid container or a flexible bag.
  • the frame(2) consists of an under frame(210) to mount first transporting means(4), composed of horizontal(211) and vertical(212) beams and an upper frame(220) with horizontal(221) and vertical(222) beams to mount a second transporting means(5) with at least two sawing means(601,602).
  • the upper frame(220) is mounted above the lower frame(210).
  • Sawing means(601,602) consist of, regarding a first embodiment, toothed circular sawing blades, according to the figures. Said sawing blades(601,602) are driven by motors(603,604), mounted on frame(221). According to this embodiment, at least two sawing blades(601,602) are provided, but dependent of the length of the trunks, a third sawing blade could be applied, not shown on the figures. Sawing means(6) could be alternatively a wire saw or a chain saw, not shown on the figures. According to figure 2 , sawing means(601,602) are mounted on the upper frame(220). Alternatively, said sawing means(601,602) could be mounted on the lower frame(210) between transporting chains(403a,403b). The motors(603,604) for driving said sawing means(601,602) could also be mounted on the lower frame(210).
  • First transporting means(4) consist of two transporting chains(403a,403b) for conveying wood trunks transversally to the sawing means(6).
  • Transporting chains(403a,403b) are running from the input, at one end of the frame(210) to behind the sawing blades(601,602).
  • transporting chains(403a,403b) are running over wheels(402).
  • Wheels(406) at output, behind the sawing blades(601,602) are not shown on this figure, but on figure 3 .
  • Guiding means(401) are provided to position centrally the transporting chains(403a,403b).
  • Second transporting means(5) consist, according to figure 2 , of a transporting chain(501), running over wheel(502), mounted on the front side of frame(220), extending between the sawing blades(601,602) to the back side of frame(220), provided with wheel(503).
  • Second transporting means(5) with transporting chain(501) is provided with pressing means(7).
  • These pressing means(7) consist of bodies(701), according to this embodiment, with a wheel to tension the transporting chain(501).
  • four pressing bodies (701,702,703,704) are provided.
  • Pressing means(7) consist of a length adjustable bar and provided with a wheel, to interact with said transporting chain(501).
  • said length and the position of said bar could be controlled in order to regulate the tension on said transporting chain(501).
  • said pressing means(7) are hydraulic or pneumatic adjustable cylinders, in order to regulate the tension. This is not shown on the figures. Further, the number of pressing means(7) could be dependent of the type of transporting means(501) and the preferred tension on said transporting means(501).
  • the transporting chains(403a,403b,501) consist of a toothed chain(404,405) like illustrated on figure 3 .
  • Said chain is composed of chain links(404), provided with teeth(405), in order to grip the wooden trunks between the upper transporting means(501) and the under transporting means(403a,403b).
  • Said toothed transporting chains(403a,403b,501) are running over toothed chain wheels(402,406,502,503).
  • the pressing means(7) are also provided at the end of the bar with a toothed wheel, like shown on the figures. Due to this configuration, the chain wheels are gripping in the chain links(404) of the transporting means(501).
  • FIG. 3 illustrates driving means of the first and second transporting means(403a,403b,501), driven by motor(1101), on the underside of frame(220).
  • Said motor(1101) is provided with a wheel(1102), driving an axle(1105) with wheel(1103), on which a driving belt(1104) runs between both wheels(1102,1103).
  • Driving axle(1105) is provided with wheels(406) in order to run the under transporting means(403a,403b).
  • axle(1105) is provided with a wheel(1106), driving wheel(1109), mounted on axle(1110) and pressing driving belt(1108) on wheel(1109).
  • Said driving belt(1108) runs further over wheel(1107).
  • Driving wheel(1109) on axle(1110) drives a wheel(503) to move upper transporting means(501).
  • both transporting means(4,5) are driven by axles(1105,1110) with belts(1104,1108).
  • the wheels(1102,1103,1106,1107,1109) are preferable chain wheels and the driving belts(1104,1108) could be drive chains.
  • the sawing device(1) is provided with a guiding plate (9), comprises a vertical plate(902) and an inclined part(901).
  • the guiding plates(9) are located laterally on the underside of the sawing blades(601,602).
  • the vertical plate(902) is situated under the sawing blades(601,602), attached to the inclined part(901), extending longitudinally or sideways of the sawing device(1). Due to this configuration, sawed trunks will glide laterally along the guiding plates(9), longitudinally of the device(1).
  • a wooden trunk will be fed by under transporting means(4), driven by motor(1101) with transmission(1104) to drive axle(1105).
  • Said axle(1105) drives a wheel(503) by belt(1108) in order to run the upper transporting means(5).
  • the wooden trunk will be clamped in front of the sawing blades(601,602) by upper transporting means(501), extending in front of the sawing blades(601,602).
  • Upper transporting means(5) run over wheels(502,503) and will be tensioned by pressing means(701,702,703,704).
  • Upper transporting means(5) will be pressed against the wooden trunk in order to position and guide it over the sawing blades(6).
  • the wooden trunk will be straightened and equally fed over the sawing blades(601,602).
  • Sawed trunks are ejected by the guiding plate(9), laterally along the sawing device(1).
  • the sawing device(1) can be provided with a safety screen in order to protect the user.
  • Said safety screen can be provided close to the sawing blades(6) and/or the whole transporting device(4).
  • This screen can be a housing, enclosing completely or partially the sawing device(1) and completely or partially transparent. This is not shown on the figures.
  • Feeding firewood trunks to the first transporting device(4) can be manually or automatically by adding a mobile conveying belt. In the latter, said transporting belt will be placed close to the sawing device(1) in order to feed continuously trunks.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
EP20100447013 2009-05-08 2010-05-06 Dispositif de sciage à couper des troncs en bois de chauffage Active EP2248643B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2009/0289A BE1018750A5 (nl) 2009-05-08 2009-05-08 Zaaginrichting voor brandhout.

Publications (2)

Publication Number Publication Date
EP2248643A1 true EP2248643A1 (fr) 2010-11-10
EP2248643B1 EP2248643B1 (fr) 2013-02-20

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BE (1) BE1018750A5 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105252617B (zh) * 2015-09-17 2017-10-10 怀宁县明慧竹业有限公司 一种蒸笼笼梁成型机

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1561479A (en) * 1924-11-01 1925-11-17 Paul G Oettel Adjustable feed mechanism
US1561476A (en) 1923-04-02 1925-11-17 Int Motor Co Torque-cushioning device
US2117641A (en) 1937-05-13 1938-05-17 Mereen Johnson Machine Company Work holder for endless conveyers
FR920772A (fr) 1946-01-29 1947-04-17 Dispositif pour couper le bois au moyen d'une scie multiple
DE1225840B (de) 1959-01-21 1966-09-29 Diemer Automatenbau Bodo Dieme Abkuerzsaege, insbesondere zum Abkuerzen von Rohhoelzern
US4277999A (en) 1979-09-06 1981-07-14 Conner Eldon C Firewood sawmill
US4501178A (en) 1982-03-03 1985-02-26 Gebruder Linck Maschinenfabrik Und Eisengiesserei "Gatterlinck" Device for severing round timber
US4507998A (en) 1982-09-02 1985-04-02 Primlumber, Inc. Firewood sawing apparatus
EP0400530A2 (fr) 1989-05-31 1990-12-05 POSCH LANDMASCHINENBAU Ges.m.b.H. Dispositif de tronçonnage de pièces
EP0418174A1 (fr) 1989-09-13 1991-03-20 Roger Bosson Dispositif pour débiter en tronçons des pièces de bois allongées
EP0515333A1 (fr) 1991-05-24 1992-11-25 Franco Andreucci Machine de sciage à couper des troncs en bois de chauffage
EP0956932A2 (fr) 1998-05-14 1999-11-17 Franz Gutser Dispositif pour couper des pièces allongées
DE102004049699A1 (de) 2004-10-12 2006-04-13 Ralf Emde Vorrichtung zum Sägen von langgestrecktem Sägegut
EP1674221A1 (fr) 2004-12-22 2006-06-28 Renholmens Mekaniska Ab Dispositif de tronçonnage de pièces de bois allongées
DE202008006710U1 (de) 2008-05-16 2008-07-24 Lutz, Adolf Vorrichtung zum Sägen von Holz im Mehrfachschnitt
EP1992461A1 (fr) 2007-05-15 2008-11-19 Posch Gesellschaft m.b.H. Dispositif de scie à bascule

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1561476A (en) 1923-04-02 1925-11-17 Int Motor Co Torque-cushioning device
US1561479A (en) * 1924-11-01 1925-11-17 Paul G Oettel Adjustable feed mechanism
US2117641A (en) 1937-05-13 1938-05-17 Mereen Johnson Machine Company Work holder for endless conveyers
FR920772A (fr) 1946-01-29 1947-04-17 Dispositif pour couper le bois au moyen d'une scie multiple
DE1225840B (de) 1959-01-21 1966-09-29 Diemer Automatenbau Bodo Dieme Abkuerzsaege, insbesondere zum Abkuerzen von Rohhoelzern
US4277999A (en) 1979-09-06 1981-07-14 Conner Eldon C Firewood sawmill
US4501178A (en) 1982-03-03 1985-02-26 Gebruder Linck Maschinenfabrik Und Eisengiesserei "Gatterlinck" Device for severing round timber
US4507998A (en) 1982-09-02 1985-04-02 Primlumber, Inc. Firewood sawing apparatus
EP0400530A2 (fr) 1989-05-31 1990-12-05 POSCH LANDMASCHINENBAU Ges.m.b.H. Dispositif de tronçonnage de pièces
EP0418174A1 (fr) 1989-09-13 1991-03-20 Roger Bosson Dispositif pour débiter en tronçons des pièces de bois allongées
EP0515333A1 (fr) 1991-05-24 1992-11-25 Franco Andreucci Machine de sciage à couper des troncs en bois de chauffage
EP0956932A2 (fr) 1998-05-14 1999-11-17 Franz Gutser Dispositif pour couper des pièces allongées
DE102004049699A1 (de) 2004-10-12 2006-04-13 Ralf Emde Vorrichtung zum Sägen von langgestrecktem Sägegut
EP1674221A1 (fr) 2004-12-22 2006-06-28 Renholmens Mekaniska Ab Dispositif de tronçonnage de pièces de bois allongées
EP1992461A1 (fr) 2007-05-15 2008-11-19 Posch Gesellschaft m.b.H. Dispositif de scie à bascule
DE202008006710U1 (de) 2008-05-16 2008-07-24 Lutz, Adolf Vorrichtung zum Sägen von Holz im Mehrfachschnitt
EP2119538A1 (fr) 2008-05-16 2009-11-18 Adolf Lutz Dispositif de coupe de bois selon une coupe multiple

Also Published As

Publication number Publication date
BE1018750A5 (nl) 2011-08-02
EP2248643B1 (fr) 2013-02-20

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