EP0141831B1 - Anordnung zum entrinden von baumstämmen od. dgl. - Google Patents

Anordnung zum entrinden von baumstämmen od. dgl. Download PDF

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Publication number
EP0141831B1
EP0141831B1 EP84901717A EP84901717A EP0141831B1 EP 0141831 B1 EP0141831 B1 EP 0141831B1 EP 84901717 A EP84901717 A EP 84901717A EP 84901717 A EP84901717 A EP 84901717A EP 0141831 B1 EP0141831 B1 EP 0141831B1
Authority
EP
European Patent Office
Prior art keywords
tree trunk
tree
bark
knife roller
trunk
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
Application number
EP84901717A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0141831A1 (de
Inventor
Franz Attems
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 EP0141831A1 publication Critical patent/EP0141831A1/de
Application granted granted Critical
Publication of EP0141831B1 publication Critical patent/EP0141831B1/de
Expired 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
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor

Definitions

  • the invention relates to an arrangement for debarking tree trunks or the like.
  • a rotating debarking tool which consists of a knife roller provided with peeling knives, which is arranged on a swivel arm against the tree trunk so that the tree trunk to be debarked can be swiveled or pivoted its longitudinal axis can be moved relative to the debarking tool with the help of wheels guided on rails and is rotated about its axis by means of a drive device, and at one end of the log a holding device with the drive device for rotating the log and in the area of the knife roller a support device for the loose support of the tree trunk is provided.
  • peeling knives in single-thread or multi-thread screw lines to the surface of the knife roller in machines for processing tree trunks.
  • peeling strips are arranged on a helical bracket, which are supplemented by knife strips running in the axial direction on the jacket of the roller.
  • the helical peeling knives have a complicated profile, which is composed of radial cutting, a comb surface, a cutting edge and a groove. There, too, the axis of rotation of the knife roller runs axially parallel to the tree trunks to be processed.
  • the peeling knives used are complicated and wear out quickly, so that they have to be reground.
  • the invention has for its object to completely debark even round and crooked long logs, to prevent the peeling knife from biting into the wood and at the same time to ensure that the peeling knife sharpen itself during processing.
  • the arrangement according to the invention is characterized in that the axis of rotation of the knife roller is at an acute angle to the axis of the tree trunk and that the peeling knives consist, in a manner known per se, of flat or vertically applied flat iron in helical lines on the surface of the knife roller, which lie above the roller surface protrude and are concentric with their outside to this.
  • the relatively small swivel movements occurring in the area of the knife roller can be compensated for by the swivel arm without impairing the processing quality, so that a complete debarking of the tree trunk is always guaranteed. This is particularly facilitated by the fact that, in the arrangement according to the invention, the length of the contacting surface lines of knife roller and tree trunk are shortened significantly (theoretically to one point) compared to the known designs.
  • Knots and root run-off can be removed in one step, with the processing intensity and the peeling depth being selected as required by regulating the feed movement and the rotational speed of the tree trunk and the rotational speed of the knife roller. Sensors and supports for adjusting the Peeling depth is not necessary.
  • the bark is pushed away with the back of the knife, so that the peeling knife cannot bite into the wood of the tree trunk and even heavily soiled wood, for example with stones stuck in the bark, can be processed safely.
  • the peeling knives sharpen themselves during processing.
  • the direction of rotation of the knife roller and the processed tree trunk are advantageously opposite to each other.
  • the holding device can be arranged on a drive carriage running on rails, which is provided in the feed direction of the tree trunk to be debarked in front of the knife roller, carries the drive device for rotating the tree trunk and in a known manner with the aid of a feed device against the Knife roller is mobile.
  • this holding device With the help of this holding device, the tree trunk to be processed is only held at one end, rotated about its axis and advanced against the knife roller. At its other end, the tree trunk can move freely so that it can swing out with this end if its axis is curved.
  • the support device can be arranged on a support carriage, which can be locked in the area of the knife roller, and an outlet carriage for receiving the barked end of the tree trunk can be freely displaceably guided on rails in the feed direction of the tree trunk, which preferably has a trough-shaped slide that catches the machined end of the tree trunk.
  • the support device supports the front end of the tree trunk even before processing begins.
  • the support carriage is then carried on the rails to the area of the knife roller with the tree trunk and braked there, whereupon the tree trunk slides over the support carriage. Its barked end is caught by the discharge cart.
  • a simple and expedient embodiment of the support device consists of a carrier with a rounded surface which is arranged transversely to the direction of advance and which is preferably bent downward and forms a sliding guide for the tree trunk.
  • the drive device for rotating the tree trunk consists of a rotating twist drill and a stop surface concentrically surrounding it with projecting prongs.
  • the twist drill which is rotated by the drive device, screws into the end of the tree trunk when it hits the end of the tree trunk until the prongs lie firmly against the tree trunk and take it along. If the drive device is provided with a reverse gear, the finished tree trunk can be detached from the holding device simply by reversing the twist drill.
  • the knife roller, the drive device on the drive carriage and the associated feed device are expediently actuated by a central control panel, preferably arranged in the area of the debarking tool.
  • a central control panel preferably arranged in the area of the debarking tool.
  • the individual devices are driven by means of electrical energy, but one or more separate motors can also be provided. It is also possible to get the drive by a tractor, e.g. using the same PTO.
  • the arrangement according to the invention can be at least partially collapsible and can be arranged to be movable on a wheeled frame. This enables easy transport, so that the arrangement for debarking tree trunks can be set up directly at the site of the felling.
  • FIG. 1 shows a top view of the arrangement according to the invention in a schematic representation and FIG. 2 shows a side view.
  • 1 shows a section along the line III-III
  • FIG. 4 shows a section along the line IV-IV
  • FIG. 5 shows a section along the line VV in FIG. 2.
  • FIG. 6 shows the knife roller of the debarking tool according to the invention Arrangement shown in view.
  • the arrangement for debarking tree trunks consists of a debarking tool 1 and rails 2 passed underneath it, on which a drive carriage 3 and a support carriage 4 are movably arranged.
  • the tree trunk 5 to be processed which is shown in dash-dotted lines in FIGS. 1 and 2, lies with its ends on the drive carriage 3 and the support carriage 4, which hold it during processing, guide it past the debarking tool 1 and support it.
  • the rails 2 and 6 are placed on supports 8.
  • the rails 6 are arranged somewhat lower than the rails 2.
  • the arrangement shown is provided with transport wheels 9 in the region of its left end.
  • the debarking tool 1 consists of a knife roller 10 which is provided with peeling knives and is rotated by a motor 11 via a chain 12.
  • the knife roller 10 is fastened together with its drive motor 11 on a swivel arm 13 which is held on a stand 14 by means of a swivel bearing 15 so as to be vertically pivotable.
  • the swivel arm 13 is also vertically displaceable on the stand 14 and can be locked at different heights, and can also be pivoted horizontally about the axis of the stand 14. This makes it possible to position the knife roller 10 in the correct position for the loading bring logs of 5 different sizes.
  • the drive car 3 runs on the rails 2 with the aid of four wheels 16.
  • a drive motor 17, a continuously variable transmission 18 and a holding device 19 are arranged on it in the axial direction of the tree trunk 5 to be processed, which are pivoted vertically with the aid of an adjusting spindle 20 can to bring the end of the tree trunk 5 into the desired position.
  • a cable pull drive is provided for the feed of the drive carriage 3, which can be seen in particular from FIG. 2 and consists of a drive motor 23, a cable pull 24 and cable pulleys 25 and 26. The ends of the cable 24 are attached to the drive car 3.
  • the support carriage 4 which can be seen in FIG. 4, has a simple structure. It consists only of four wheels 27 running on the rails 2 and a carrier 28 connecting them, which is bent downward and expediently has a rounded surface.
  • the chute 30 extends with its end facing the debarking tool 1 to below the rails 2, so that it can catch the end of the debarked tree trunk 5 coming from the debarking tool 1.
  • the peeling knives are formed from flat irons 31 which are applied in an upright manner in four screw threads to the surface of the knife roller 10. On its outside, the helical flat irons 31 are turned off coaxially to the surface of the knife roller 10. This creates advantageous cutting surfaces, which bring about an advantageous debarking of the tree trunk without penetrating it too deeply.
  • the tree trunk 5 to be debarked is introduced into the debarking arrangement in the manner shown in FIGS. 1 and 2. It is placed at one end on the drive car 3 and at the other end on the support car 4. The end lying on the drive carriage 3 is then aligned with the aid of the holding device 19 and the adjusting spindle 20 such that the axis of the tree trunk 5 is approximately aligned with the twist drill 21. If this is set in rotation by means of the drive motor 17 and the gear 18 and at the same time the drive carriage 3 is pushed against the debarking tool 1 by means of the cable 24, the twist drill 21 penetrates into the end face of the tree trunk 5 until the stop surface 22 hits the tree trunk 5 .
  • the front end of the tree trunk 5 reaches the area of the debarking tool 1 and there under the knife roller 10. This is arranged at an acute angle, preferably at 45 °, to the axis of the tree trunk 5 and is thus driven to rotate that the peeling blades arranged on their surface move against the direction of rotation of the tree trunk 5.
  • the tree trunk 5 is progressively debarked as it passes under the knife roller 10, which rests on the tree trunk due to its own weight.
  • the knife roller 10 can automatically adjust to different thicknesses of the barked tree trunks.
  • the knife roller 10 can compensate for unevenness and, in the case of crooked tree trunks, follow the vertical movements which the crooked tree trunks carry out about their axis during the rotational movement.
  • the support carriage 4 is designed so that it does not hinder the movements of the tree trunk 5. It is first taken from the tree trunk and passed under the knife roller 10. After passing the debarking tool 1, the support carriage 4 strikes an end stop 32 at the end of the rails 2. The barked tree trunk 5 then slides over the support carriage 4, the support 28 of which is correspondingly round.
  • the barked end of the tree trunk 5 is then caught by the trough-shaped slide 30 of the discharge trolley 7, which runs on the rails 6.
  • the discharge carriage 7 thereby ensures that the debarked tree trunk is properly removed by the debarking tool 1.
  • the feed movement of the drive carriage 3 is set and the direction of rotation of the twist drill 21 is reversed so that it unscrews from the tree trunk 5.
  • the debarked tree trunk can then be removed.
  • the drive carriage 3, the support carriage 4 and the outlet carriage 7 are returned to their starting positions shown in the drawing, whereupon a new tree trunk is inserted into the debarking arrangement and the debarking process can begin again.
  • the debarking arrangement according to the invention works independently of the type of wood of the tree trunk to be debarked and also independently of its dimensions.
  • the tree trunks can be debarked or peeled to any thickness.
  • the debarking or peeling depth can be set and changed simply by changing the feed speed of the drive carriage 3 in relation to the rotational speed of the debarked tree trunk 5 and the knife roller 10. This makes it possible to adapt the debarking depth to the particular nature of the debarked wood and also to process irregular tree trunks precisely.
  • the entire arrangement, in particular the knife roller, the drive device on the drive carriage and the associated feed device are expediently actuated via a centrally arranged control panel, so that the entire debarking process can be monitored and controlled by a single person.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP84901717A 1983-05-10 1984-04-27 Anordnung zum entrinden von baumstämmen od. dgl. Expired EP0141831B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1717/83 1983-05-10
AT0171783A AT377943B (de) 1983-05-10 1983-05-10 Anordnung zum entrinden von baumstaemmen od.dgl.

Publications (2)

Publication Number Publication Date
EP0141831A1 EP0141831A1 (de) 1985-05-22
EP0141831B1 true EP0141831B1 (de) 1988-07-13

Family

ID=3519480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84901717A Expired EP0141831B1 (de) 1983-05-10 1984-04-27 Anordnung zum entrinden von baumstämmen od. dgl.

Country Status (7)

Country Link
US (1) US4590979A (it)
EP (1) EP0141831B1 (it)
AT (1) AT377943B (it)
CA (1) CA1223177A (it)
DE (1) DE3472644D1 (it)
IT (1) IT1173595B (it)
WO (1) WO1984004485A1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUT54547A (en) * 1989-08-24 1991-03-28 Franz Attems Cutter for woodworking
AT406843B (de) * 1999-04-07 2000-09-25 Johann Wolf Vorrichtung zum bearbeiten von baumstämmen
US7931152B2 (en) * 2006-07-07 2011-04-26 Andritz Oy Shuffling apparatus and method for aligning wood logs in a conveyor

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322221C (de) * 1918-10-15 1920-06-23 Xaver Konrad Vorschub an Stangen- und Mastenschaelmaschinen
US1921904A (en) * 1929-11-23 1933-08-08 Bezner Albert Decorticating device for timber
US1986708A (en) * 1929-11-23 1935-01-01 Bezner Albert Decorticating device for timber
US2230336A (en) * 1937-07-07 1941-02-04 Taylor Colquitt Co Rossing machine
DE710512C (de) * 1937-12-21 1941-09-15 Ernst Wilhelm Neuer Vorrichtung zum Entborken von Baumrinde
DE742608C (de) * 1939-10-31 1943-12-08 Hans Wiedenmann Rindenschaelmaschine
US2642904A (en) * 1951-02-06 1953-06-23 John H Pearce Log debarker and chipper
DE904241C (de) * 1951-03-16 1955-03-07 Alois Nagel Maschine zum Weissschaelen von Faserholz
US2689591A (en) * 1953-06-26 1954-09-21 Omar V Woodard Log-peeling machine having cutter and log-handling carriages movable on transversely extending trackways
GB743885A (en) * 1953-09-09 1956-01-25 J R Gordon & Co Ltd Improved de-barking machine
US2726691A (en) * 1953-09-09 1955-12-13 J R Gordon & Co Ltd Debarking machine having underlying bark-stripping helical rollers and an overlying adjustable pressure roller
FR1125189A (fr) * 1955-04-29 1956-10-25 Installation pour l'écorçage de grumes
DE961208C (de) * 1955-05-17 1957-04-04 Valo V L Rindenschaelmaschine
AT200785B (de) * 1956-10-26 1958-11-25 I C I Societa Agricola Ind Per Mechanische Schälvorrichtung für Scheiterholz
US3416581A (en) * 1966-05-25 1968-12-17 Lloyd A Parrish Log debarking apparatus
DE2516290A1 (de) * 1975-04-14 1976-10-28 Wilhelm Hepke Maschine zum entrinden von rundhoelzern
DE2712985A1 (de) * 1977-03-24 1978-10-05 Wilhelm Hepke Umlaufendes werkzeug zum entrinden, entbasten oder weisschaelen von rundhoelzern

Also Published As

Publication number Publication date
US4590979A (en) 1986-05-27
WO1984004485A1 (en) 1984-11-22
IT8420857A0 (it) 1984-05-09
ATA171783A (de) 1984-10-15
DE3472644D1 (en) 1988-08-18
CA1223177A (en) 1987-06-23
AT377943B (de) 1985-05-28
EP0141831A1 (de) 1985-05-22
IT8420857A1 (it) 1985-11-09
IT1173595B (it) 1987-06-24

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