DK160001B - APPLIANCES FOR CUTTING SMALL PIECE MATERIALS, EX. WOODEN TREES FOR WOODEN PIECES - Google Patents

APPLIANCES FOR CUTTING SMALL PIECE MATERIALS, EX. WOODEN TREES FOR WOODEN PIECES Download PDF

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Publication number
DK160001B
DK160001B DK453987A DK453987A DK160001B DK 160001 B DK160001 B DK 160001B DK 453987 A DK453987 A DK 453987A DK 453987 A DK453987 A DK 453987A DK 160001 B DK160001 B DK 160001B
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DK
Denmark
Prior art keywords
rotation
cutting
knife
axis
blade
Prior art date
Application number
DK453987A
Other languages
Danish (da)
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DK453987D0 (en
DK453987A (en
DK160001C (en
Inventor
Joergen Baadsgaard-Jensen
Original Assignee
Skovteknisk Inst
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Application filed by Skovteknisk Inst filed Critical Skovteknisk Inst
Priority to DK453987A priority Critical patent/DK160001C/en
Publication of DK453987D0 publication Critical patent/DK453987D0/en
Priority to DE8888113238T priority patent/DE3861712D1/en
Priority to EP88113238A priority patent/EP0305798B1/en
Priority to AT88113238T priority patent/ATE60538T1/en
Priority to FI883957A priority patent/FI84986C/en
Publication of DK453987A publication Critical patent/DK453987A/en
Publication of DK160001B publication Critical patent/DK160001B/en
Application granted granted Critical
Publication of DK160001C publication Critical patent/DK160001C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L7/00Arrangements for splitting wood
    • B27L7/02Arrangements for splitting wood using rotating members, e.g. rotating screws
    • B27L7/04Conical screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/28Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/002Transporting devices for wood or chips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Lubricants (AREA)
  • Complex Calculations (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Meat, Egg Or Seafood Products (AREA)

Abstract

An apparatus for cutting wood into small pieces, such as logs into pieces of firewood, and comprising a rotatably mounted knife means (1) with a helicoidal blade (4, 5), the cutting edge (8, 9) of which is helical. A support means associated with the knife means (1) and supports the material to be cut. The cutting edge (8, 9) is situated on the edge (10, 11) of the blade (4, 5) facing the axis of rotation (2) of the knife means (1), and the the distance between the cutting edge (8, 9) and the axis of rotation (2) of the knife means (1) decreases towards the feeding direction (12) of the wood.

Description

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iin

Opfindelsen angår et apparat til skæring af træmateriale til mindre stykker, f.eks. træstammer til brændestykker, og som omfatter et roterbart anbragt knivorgan med et skruef ladeformet blad, der har en skruelinieagtig skærende æg og et i til-5 knytning til knivorganet anbragt modhold, der er indrettet til at støtte det materiale, som skal skæres.The invention relates to an apparatus for cutting wood material into smaller pieces, e.g. wood logs, comprising a rotatably arranged knife member having a screw-shaped blade having a helical cutting egg and an abutment arranged in support of the knife member adapted to support the material to be cut.

Fra amerikansk patentskrift nr. 4.053.004 kendes et apparat af den nævnte art, som har et knivorgan, hvis skærende æg dannes af den ydre kant af et konisk, skrueformet blad, som er monteret på en akse. Det skrueformede blad har, for at gøre appa-ratet selvfødende, flere vindinger, og bladets radiale højde vokser fra indføringsenden for det træmateriale, der skal skæres, dvs. fra den forreste ende af knivorganet, til udløbs-jg enden, dvs. den bageste ende af knivorganet. Apparatet omfatter endvidere et modhold eller modskær, der er anbragt umiddelbart op til det punkt, hvor bladet har størst dybde. Ved dette apparat vil, på grund af formen af den skærende æg og modholdets placering, alle træstammer blive skåret over af og 2Q dermed påvirke den del af bladets skærende æg, som ligger i størst afstand fra knivorganets omdrejningsakse. Dette bevirker, at der ved overskæring af træstammer, som har mindre tværsnitsdimension end den apparatet er indrettet til maksimalt at kunne overskære, benyttes en uhensigtsmæssig stor mo-2g mentarm og dermed et unødvendigt stort moment.U.S. Patent No. 4,053,004 discloses an apparatus of the aforementioned kind having a knife means whose cutting edge is formed from the outer edge of a tapered helical blade mounted on an axis. In order to make the device self-feeding, the helical blade has several turns, and the radial height of the blade grows from the insertion end of the wood material to be cut, ie. from the front end of the knife means, to the outlet end, ie. the rear end of the knife organ. The apparatus further comprises a retaining bar or cutting insert located immediately up to the point where the blade has the greatest depth. In this apparatus, due to the shape of the cutting egg and the position of the retaining rod, all tree trunks will be cut off and thus affect the portion of the cutting edge of the blade which is at the greatest distance from the axis of rotation of the knife. This means that when cutting trunks which have a smaller cross-sectional dimension than the apparatus designed to be able to cut the maximum, an unnecessarily large mo-2g ment arm is used and thus an unnecessarily large torque.

Formålet med opfindelsen er at anvise et enkelt opbygget apparat af den indledningsvis nævnte art, hvor det under skæring på knivorganet virkende moment er minimeret.The object of the invention is to provide a single built-up apparatus of the kind mentioned above, where the torque acting on the knife means is minimized.

30 Til opnåelse af dette formål er apparatet ifølge opfindelsen ejendommeligt ved, at den skærende æg befinder sig på bladets mod knivorganets omdrejningsakse vendende kant, og at afstanden mellem den skærende æg og knivorganets omdrejningsakse aftager set i indføringsretningen for træmaterialet.For this purpose, the apparatus according to the invention is characterized in that the cutting egg is on the edge of the blade facing the rotational axis of the knife means and that the distance between the cutting egg and the rotational axis of the knife decreases in the direction of introduction of the wood material.

3535

Herved opnås, at skæring af træmateriale med mindre tværsnitsdimension end den apparatet maksimalt er indrettet til, altid foregår ved den mindst mulige momentarm, og derved det mindstHereby it is achieved that cutting of wood material with a smaller cross-sectional dimension than the device is maximally designed for, always takes place at the least possible torque arm, and thus the least

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2 mulige moment. Dette skyldes at træmaterialet på grund af æggens form vil blive trukket mod knivorganets omdrejningsakse. Herved reduceres også påvirkningen af bladet og derved risikoen for beskadigelse af dette.2 possible moments. This is because, due to the shape of the eggs, the wood material will be pulled towards the axis of rotation of the knife. This also reduces the impact of the blade and thereby the risk of damage to it.

55

Ifølge opfindelsen kan den skærende ægs afstand fra knivorganets omdrejningsakse aftage konstant.According to the invention, the distance of the cutting egg from the axis of rotation of the knife means can decrease continuously.

Herved vil æggen for hver vinkeldrejning af knivorganet bevæge sig samme stykke ind i træmaterialet, hvilket anses for at 1° u være hensigtsmæssigt.Hereby, for each angular rotation of the knife means, the egg will move the same piece into the wood material, which is considered to be 1 ° u appropriate.

Desuden kan ifølge opfindelsen det skruef1adeformede blad ligge på en vindelflade.In addition, according to the invention, the helical blade may lie on a winding surface.

Herved opnås et meget jævnt og rent snit, og mindst mulig kraftpåvirkning af knivorganet, idet træmaterialet teoretisk set ikke vil påvirke bladet i aksial retning. Samtidigt vil de skårne, mindre træstykker, såfremt udgangsmaterialet indføres parallelt med knivorganets omdrejningsakse, i det væsentlige have samme form som kendte brændestykker.This results in a very smooth and clean cut, and as little impact as possible on the knife means, since the wood material will theoretically not affect the blade in the axial direction. At the same time, if the starting material is introduced parallel to the axis of rotation of the knife means, the cut, smaller pieces of wood will have essentially the same shape as known pieces of wood.

Endvidere kan ifølge opfindelsen bladet og derved den skærende æg strække sig over maksimalt 360°.Furthermore, according to the invention, the blade and thereby the cutting egg can extend over a maximum of 360 °.

Dette bevirker at muligheden for at afskårne mindre træstykker 25 klemmer sig fast mellem efter hinanden følgende bladvindinger elimineres, idet sådanne ikke forefindes. Desuden vil bladet hensigtsmæssigt kun være i indgreb i et adskillelsesområde af gangen.This causes the possibility of cutting smaller pieces of wood 25 to become trapped between successive leaf turns, as these are not present. In addition, the blade will conveniently only engage in a separation area at a time.

30 Fremdeles kan ifølge opfindelsen knivorganet være udstyret med to i det væsentlige identiske blade, som hver strækker sig over i hovedsagen 180° og som er beliggende i hovedsagen 180° forskudt i forhold til hinanden.Still, according to the invention, the knife means may be provided with two substantially identical blades, each extending substantially 180 ° and substantially 180 ° offset relative to each other.

Denne udførelsesform anses for i praksis at være den mest hen-3 5 sigtsmæssige, idet der opnås et passende forhold mellem kapaciteten og effektbehovet.In practice, this embodiment is considered to be the most appropriate, providing an appropriate ratio of capacity to power demand.

Endelig kan ifølge opfindelsen bladet eller bladene være fastgjort på indersiden af en rotationssymmetrisk cylinder, der 3Finally, according to the invention, the blade or blades may be attached to the inside of a rotationally symmetrical cylinder which

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via en transmission kan drives til rotation omkring omdrejningsaksen .via a transmission can be driven for rotation about the axis of rotation.

Denne udformning af knivorganet anses for at være den i prak-g sis foretrukne, idet der herved opnås stor stivhed.This design of the knife means is considered to be the most preferred in practice, thereby providing high rigidity.

Opfindelsen forklares nærmere nedenfor under henvisning til tegningen, hvor fig. 1 viser et længdesnit efter linien I-I i fig. 2 gennem en 10 udførelsesform for apparatet ifølge opfindelsen og fig. 2 apparat ifølge opfindelsen set forfra, dvs. fra indføringsenden for det materiale, som skal skæres.The invention is explained in more detail below with reference to the drawing, in which fig. 1 shows a longitudinal section along line I-I in FIG. 2 through a 10 embodiment of the apparatus according to the invention; and FIG. 2 apparatus according to the invention seen from the front, ie. from the feed end of the material to be cut.

Det i fig. 1 og 2 viste apparat omfatter et knivorgan 1, der 15 er anbragt roterbart om en vandret akse 2 i en ramme 3. Knivorganet indbefatter to identiske skruef 1adeformede blade 4, 5, som ligger på en vindelflade, og som er fastgjort til den indre overflade 6 af en rotationssymmetrisk cylinder 7. De to blade 4, 5 strækker sig over i hovedsagen 180® og er belig- 20 gende i hovedsagen 180° forskudt i forhold til hinanden. Bladenens skærende æg 8, 9, der befinder sig på bladets 4, 5 mod omdrejningsaksen 2 vendende kant 10, 11, har en konisk skrueli-nieagtig form, og deres afstand fra knivorganets 2 omdrejningsakse aftager konstant set i indføringsretningen 12 for 25 det træmateriale, der skal skæres. Ved denne udformning af den skærende æg 8, 9, vil denne, når knivorganet 1 roterer i den ved hjælp af pilen 13 viste retning for hver vinkeldrejning, bevæge sig samme stykke mod knivorganets omdrejningsakse 2.The FIG. 1 and 2 comprises a knife means 1 rotatably arranged about a horizontal axis 2 in a frame 3. The knife means includes two identical screws 1-shaped blades 4, 5, which lie on a spiral surface and which are attached to the inner surface 6 of a rotationally symmetrical cylinder 7. The two blades 4, 5 extend substantially 180 ° and are substantially 180 ° offset relative to each other. The cutting edges 8, 9 of the blades, which are on the edge of the blade 4, 5 against the axis of rotation 2, have a tapered helical shape, and their distance from the axis of rotation of the knife 2 decreases constantly in the direction of introduction 12 for the wood material. that must be cut. In this embodiment of the cutting egg 8, 9, when the knife means 1 rotates in the direction shown by the arrow 13 for each angular rotation, the same piece moves towards the axis of rotation of the knife means 2.

30 i umiddelbar tilknytning til knivorg.anet 1, er der anbragt et modhold 14, som strækker sig ind i knivorganet 1. Dette modhold 14 består af et lodret modstål 15 og et vandret modstål 16, der er anbragt vinkelret på det lodrette modstål 15. Det vandrette modståls anlægsflade ligger i samme plan, som kniv-35 organets 1 omdrejningsakse 2, mens det lodrette modståls 15 anlægsflade 18 er forskudt til højre i fig. 2 i forhold til et lodret plan gennem knivorganets 1 omdrejningsakse 2 (se fig. - 2). Modstålenes 15, 16 ind i knivorganet 1 ragende kantflader ( 430, adjacent to the knife body 1, is provided with a resistor 14 which extends into the knife member 1. This resistor 14 consists of a vertical resistor 15 and a horizontal resistor 16 disposed perpendicular to the vertical resistor 15. The abutment surface of the horizontal resistor lies in the same plane as the axis of rotation of the knife member 1, while the abutment surface 18 of the vertical resistor 15 is offset to the right in FIG. 2 with respect to a vertical plane through the axis of rotation of the knife means 1 (see Figs. - 2). The opposed steel 15, 16 enters the edge faces (4) of the cutting member 1

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19, 20 forløber således på skrå, at bladenes 4, 5 skærende æg 8, 9 ved rotation af knivorganet 1 i den ved hjælp af pilen 13 viste retning stryger tæt op ad disse. Med henblik herpå er det vandrette modståls 16 kantflade 20 skråt affaset (se fig.19, 20 are inclined so that the cutting eggs 8, 9 of the blades 4, 5, by rotation of the knife means 1 in the direction indicated by the arrow 13, irrigate close to them. To this end, the edge surface 20 of the horizontal resistor 16 is bevelled (see FIG.

5 1).5 1).

Knivorganet 1 har på den ydre overflade af den rotationssymmetriske cylinder 7 to symmetrisk anbragte tandkranse 21, 22, som er i indgreb med tre par tandhjul 23, 24, 25, der er jævnt fordelt på den rotationssymmetriske cylinders periferi. Hvert tandhjulspar 23, 24, 25 er drejefast forbundet med en aksel 26, 27, 28, der er lejret på rammen 3. To af disse tandhjulspar 23, 24, 25 fungerer som støttetandhjul for knivorganet, medens det tredje tandhjulspar er indrettet til at drive knivorganet 1 til rotation i den ved hjælp af pilen 13 viste ret-The knife means 1 has on the outer surface of the rotationally symmetrical cylinder 7 two symmetrically arranged gears 21, 22, which are engaged by three pairs of gears 23, 24, 25, which are evenly distributed on the periphery of the rotationally symmetrical cylinder. Each gear pair 23, 24, 25 is pivotally connected to a shaft 26, 27, 28 mounted on frame 3. Two of these gear pairs 23, 24, 25 act as a support gear for the knife means, while the third gear pair is adapted to drive the knife means 1 for rotation in the direction shown by the arrow 13

1 V1 V

ni ng.ni ng.

Ved den set i indføringsretningen 12 forreste ende af appara-tet, forefindes der et indføringsorgan omfattende to vandret forløbende og oven over hinanden beliggende indføringsvalser 20 29, 30 til kontinuerligt og med konstant hastighed at indføre det materiale, som skal skæres. Den nedre indføringsvalses 30 omdrejningsakse er fast og dens periferi ligger i hovedsagen i samme plan, som det vandrette modståls 16 anlægsflade 17, medens den øvre indføringsvalse 29 er anbragt svingbart ved 25 hjælp af en svingarm 31, således at centerafstanden mellem de to indføringsvalser kan ændres. Den svingbart anbragte, øvre indføringsvalse 29 er forbelastet i retning mod den nedre indføringsvalse 30, således at indføringsvalserne klemmer om og fastholder det træmateriale, som indføres mod rotationen. Den 30 nedre indføringsvalse 30 drives ved hjælp af en ikke vist udveksling synkront med knivorganets 1 omdrejningshastighed, således at indføringshastigheden af materialet i knivorganet er afpasset efter stigningen på bladene. Herved opnås, at træmaterialet opskæres i lige lange stykker uafhængigt af dettes 35 tværsmtsdimension, samt at der teoretisk set ikke opstår vandrette trækkræfter i bladene 4, 5, idet disse ikke skal trække træmaterialet frem gennem apparatet under overskæringen * af dette.At the front end of the apparatus seen in the direction of insertion 12, there is provided an insertion means comprising two horizontally extending and superposed insertion rollers 20 29, 30 for continuously and continuously introducing the material to be cut. The axis of rotation of the lower feed roller 30 is fixed and its periphery is substantially in the same plane as the abutment surface 17 of the horizontal steel 16, while the upper feed roller 29 is pivotally mounted by a pivot arm 31 so that the center distance between the two feed rollers can be changed. . The pivotally positioned upper feed roller 29 is preloaded in the direction of the lower feed roller 30, so that the feed rollers clamp and hold the wood material fed against the rotation. The lower feed roller 30 is driven by means of an exchange not shown synchronously with the rotational speed of the knife means 1, so that the feed rate of the material in the knife means is adjusted to the pitch of the blades. Hereby the wood material is obtained cut into equal lengths regardless of its cross-sectional dimension, and that, theoretically, no horizontal tensile forces occur in the blades 4, 5, as these do not have to pull the wood material through the apparatus during cutting thereof.

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55

Ved den set i indføringsretningen 12 for træmaterialet bageste ende af apparatet er der anbragt et transportbånd 32 til bortledning af de afskårne mindre træstykker.At the rear end of the apparatus, in the direction of insertion 12 of the wood material, a conveyor belt 32 is disposed to divert the cut-off smaller pieces of wood.

5 Apparatet fungerer på følgende måde:5 The device works as follows:

Træmaterialet, der kan være træstammer med eller uden grene føres ved hjælp af indføringsorganets to indføringsvalser 29, 30 hen på modholdet 14 og ind i knivorganet 1, der som nævnt ovenfor drives synkront med indføringsorganet. Når træmateria-let er blevet indført i hovedsagen svarende til stigningen af et blad, vil dette blads skærende æg komme i indgreb med træmaterialet og på grund af den ovenfor beskrevne form af bladet og modholdets 14 modstål 15, 16 overskære dette i hovedsagen vinkelret på træmaterialets længderetning. Det afskårne mindre 15 stykke vil falde ned på transportbåndet 32 og blive ført bort. Umiddelbart efter afskæring af det første træstykke og i afhængighed af træmaterialets tværsnitsdimension vil det andet blad komme i indgreb med træmaterialet og afskære et nyt træstykke, der ligeledes falder ned på transporbåndet 32 og bliver ført bort.The wood material, which may be tree trunks with or without branches, is guided by means of the two insertion rollers 29, 30 of the insertion member onto the retainer 14 and into the knife means 1 which, as mentioned above, is driven synchronously with the insertion means. When the wood material has been introduced substantially corresponding to the rise of a leaf, the cutting egg of that leaf will engage with the wood material and, due to the above-described shape of the blade and the resist steel 15, 16 of the retainer 14, substantially cut this perpendicular to the wood material. longitudinal direction. The cut smaller piece will fall onto the conveyor belt 32 and be carried away. Immediately after cutting off the first piece of wood and depending on the cross-sectional dimension of the wood material, the second leaf will engage the wood material and cut off a new piece of wood which also falls on the conveyor belt 32 and is carried away.

Opfindelsen kan ændres på mange måder uden at der derved afviges fra dens ide. Således kan bladets eller bladenes skærende æg set i retningen fra den indre overflades 6 af rota-25 tions cylinderen 7 mod knivorganets 1 omdrejningsakse 2 have et mere progressivt forløb, således at den skærende æg nær omdrejningsaksen forløber hurtigere ind mod denne. Herved vil der under overskæringen af træmaterialet fremkomme et mere konstant momentforløb. Endvidere må i denne forbindelse formen 30 af modstålenes 16, 17 kantflader 19, 20 ændres svarende til formen af den skærende æg.The invention can be changed in many ways without departing from its idea. Thus, the cutting edge of the blade or blades seen in the direction from the inner surface 6 of the rotation cylinder 7 towards the axis of rotation of the knife 1 can have a more progressive course, so that the cutting edge near the axis of rotation advances towards it. This will result in a more constant torque flow during the cutting of the wood material. In addition, in this connection, the shape 30 of the edge faces 19, 20 of the resist steel 16, 17 must be changed according to the shape of the cutting egg.

Endelig skal det nævnes, at apparatet kan være udformet som et apparet med særskilt kraftkilde til drivning af knivorganet og indføringsorganet eller som et apparat, der er indrettet til at blive trukket af et køretøjs, f.eks. en traktors, kraftkilde.Finally, it should be mentioned that the apparatus may be designed as a separate power source apparatus for driving the knife means and the insertion means or as an apparatus adapted to be pulled by a vehicle, e.g. a tractor, power source.

Claims (6)

1. Apparat til skæring af træmateriale til mindre stykker, 5 f.eks. trækævler til brændestykker, og som omfatter et roter- bart anbragt knivorgan (1) med et skruef 1adeformet blad (4, 5), der har en skruelinieagtig skærende æg (8, 9), og et i tilknytning til knivorganet (1) anbragt modhold (14), der er indrettet til at støtte det materiale, som skal skæres, k e n -detegnet ved, at den skærende æg (8, 9) befinder sig på bladets (4, 5) mod knivorganets (1) omdrejningsakse (2) vendende kant (10, 11), og at afstanden mellem den skærende æg (8, 9 ) og knivorganets (1) omdrejningsakse (2) aftager set i indføringsretningen (12) for træmaterialet. 151. Apparatus for cutting wood material into smaller pieces, e.g. netting blades comprising a rotatably arranged knife member (1) having a screw-shaped blade (4, 5) having a helical cutting egg (8, 9) and a retainer disposed adjacent to the knife member (1) (14) adapted to support the material to be cut, characterized in that the cutting egg (8, 9) is on the blade (4, 5) facing the axis of rotation of the knife (1) (2). edge (10, 11) and that the distance between the cutting egg (8, 9) and the axis of rotation (2) of the knife means (2) decreases as seen in the feed direction (12) of the wood material. 15 2. Apparat ifølge krav 1, kendetegnet ved, at den skærende ægs (8, 9) afstand fra knivorganets (1) omdrejningsakse (2) aftager konstant.Apparatus according to claim 1, characterized in that the distance of the cutting edge (8, 9) from the axis of rotation (2) of the knife (1) decreases constantly. 3. Apparat ifølge krav 1, kendetegnet ved, at det 20 skruef 1adeformede blad (4, 5) ligger på en vindelflade.Apparatus according to claim 1, characterized in that the 20 screw-shaped blade (4, 5) lies on a winding surface. 4. Apparat ifølge et eller flere af kravene 1-3, kendetegnet ved, at bladet (4, 5) og derved den skærende æg (8, 9) strækker sig over maksimalt 360°. 2 5Apparatus according to one or more of claims 1-3, characterized in that the blade (4, 5) and thereby the cutting egg (8, 9) extend over a maximum of 360 °. 2 5 5. Apparat ifølge et eller flere af kravene 1-4, kendetegnet ved, at knivorganet (1) er udstyret med to i det væsentlige identiske blade (4, 5), som hver strækker sig over i hovedsagen 180°, og som er beliggende i hovedsagen 180° forskudt i forhold til hinanden. 30Apparatus according to one or more of claims 1 to 4, characterized in that the knife means (1) is provided with two substantially identical blades (4, 5), each extending substantially 180 ° and located essentially 180 ° offset relative to each other. 30 6. Apparat ifølge et eller flere af kravene 1-5, kendetegnet ved, at bladene (4, 5) er fastgjort på indersiden (6) af en rotationssymmetrisk cylinder (7), der via en transmission kan drives til rotation omkring omdrejningsaksen (2). 35Apparatus according to one or more of claims 1-5, characterized in that the blades (4, 5) are fixed on the inside (6) of a rotationally symmetrical cylinder (7) which can be driven via a transmission for rotation about the axis of rotation (2). ). 35
DK453987A 1987-08-28 1987-08-28 APPLIANCES FOR CUTTING SMALL PIECE MATERIALS, EX. WOODEN TREES FOR WOODEN PIECES DK160001C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK453987A DK160001C (en) 1987-08-28 1987-08-28 APPLIANCES FOR CUTTING SMALL PIECE MATERIALS, EX. WOODEN TREES FOR WOODEN PIECES
DE8888113238T DE3861712D1 (en) 1987-08-28 1988-08-16 DEVICE FOR CUTTING WOOD INTO SMALL PIECES, LIKE EXAMPLE OF WOOD STREAM IN FIREWOOD.
EP88113238A EP0305798B1 (en) 1987-08-28 1988-08-16 An apparatus for cutting wood into small pieces, such as logs into pieces of firewood
AT88113238T ATE60538T1 (en) 1987-08-28 1988-08-16 DEVICE FOR CUTTING WOOD INTO SMALL PIECES SUCH AS LOGS INTO FIREWOOD.
FI883957A FI84986C (en) 1987-08-28 1988-08-26 Apparatus for cutting wood material into smaller pieces, e.g. logging of tree trunks to firewood

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK453987A DK160001C (en) 1987-08-28 1987-08-28 APPLIANCES FOR CUTTING SMALL PIECE MATERIALS, EX. WOODEN TREES FOR WOODEN PIECES
DK453987 1987-08-28

Publications (4)

Publication Number Publication Date
DK453987D0 DK453987D0 (en) 1987-08-28
DK453987A DK453987A (en) 1989-03-01
DK160001B true DK160001B (en) 1991-01-14
DK160001C DK160001C (en) 1991-06-17

Family

ID=8134439

Family Applications (1)

Application Number Title Priority Date Filing Date
DK453987A DK160001C (en) 1987-08-28 1987-08-28 APPLIANCES FOR CUTTING SMALL PIECE MATERIALS, EX. WOODEN TREES FOR WOODEN PIECES

Country Status (5)

Country Link
EP (1) EP0305798B1 (en)
AT (1) ATE60538T1 (en)
DE (1) DE3861712D1 (en)
DK (1) DK160001C (en)
FI (1) FI84986C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393299B1 (en) * 2009-03-23 2012-04-20 Naldoni MACHINE FOR THE PRODUCTION OF WOODEN BOOTS.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053004A (en) * 1975-05-12 1977-10-11 The United States Of America As Represented By The Secretary Of Agriculture Helical head comminuting shear
FI78014C (en) * 1981-01-14 1989-06-12 Tuikola Oy Wood splitting device

Also Published As

Publication number Publication date
DK453987D0 (en) 1987-08-28
ATE60538T1 (en) 1991-02-15
FI84986C (en) 1992-02-25
DK453987A (en) 1989-03-01
FI84986B (en) 1991-11-15
EP0305798B1 (en) 1991-01-30
FI883957A0 (en) 1988-08-26
FI883957A (en) 1989-03-01
DE3861712D1 (en) 1991-03-07
EP0305798A1 (en) 1989-03-08
DK160001C (en) 1991-06-17

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