EP0173294B1 - Chopping machine for wooden beams - Google Patents

Chopping machine for wooden beams Download PDF

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Publication number
EP0173294B1
EP0173294B1 EP85110738A EP85110738A EP0173294B1 EP 0173294 B1 EP0173294 B1 EP 0173294B1 EP 85110738 A EP85110738 A EP 85110738A EP 85110738 A EP85110738 A EP 85110738A EP 0173294 B1 EP0173294 B1 EP 0173294B1
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EP
European Patent Office
Prior art keywords
chopping machine
wooden beams
beams according
slide
cutter
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 - Lifetime
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EP85110738A
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German (de)
French (fr)
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EP0173294A1 (en
Inventor
Alois Berner
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • 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
    • B27L7/00—Arrangements for splitting wood
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4836—With radial overlap of the cutting members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/626—Operation of member controlled by means responsive to position of element remote from member [e.g., interlock]

Definitions

  • the knife is advantageously exchangeably fastened to the slide via a wedge piece which is beveled in the same direction (claim 6); the wedge angle of the knife is between 20 ° and 40 ° (claim 8) and that of the wedge piece is about 45 ° (claim 9).
  • the wooden parts are exposed to such strong tensile stresses that they break open transversely to the grain, which promotes drying and handling during heating.
  • a sliding guide piece (6) for a carriage (5) is suspended in an oscillating manner, which has a cutting knife (1) with a wedge piece (2) transverse to the wood fiber direction lying cutting edge.
  • This slide can be pushed forward intermittently by a hydraulic cylinder-piston unit (4).

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Fish Paste Products (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

A wood cutting machine having a knife-like blade for cutting and chipping wood into large pieces. The blade is oriented at an angle to the direction of wood grain thereby lowering the force required to cut the wood.

Description

Die Erfindung bezieht sich auf eine Holzbalken-Zerkleinerungsmaschine, bei der an einem stoßweise vorschiebbaren Schlitten ein Messer mit quer zur Holzfaserrichtung liegender Schneide angeordnet ist.The invention relates to a wooden beam shredding machine, in which a knife with a cutting edge lying transversely to the wood fiber direction is arranged on an intermittently advancing carriage.

Eine derartige Holzbalken-Zerkleinerungsmaschine ist beispielsweise aus der DE-A-3 324 122 bekannt. Die aus dieser Druckschrift bekannte Holzbalken-Zerkleinerungsmaschine dient insbesondere zum Zerkleinern von länglichen Holzstücken, wie beispielsweise von Holzbalken oder Baumstämmen. Dabei wird das Schnittgut in mehr oder weniger große Stücke quer zur Faserrichtung zerteilt. Die aus der DE-A-3 324 122 bekannte Zerkleinerungsmaschine hat jedoch den Nachteil, daß ihr Kraftbedarf sehr groß ist, und daß die quer abgeteilten Holzstücke nicht in Faserrichtung aufgespalten sind.Such a wooden beam crushing machine is known for example from DE-A-3 324 122. The wooden beam crushing machine known from this publication is used in particular for crushing elongated pieces of wood, such as wooden beams or tree trunks. The clippings are cut into more or less large pieces across the grain. However, the shredding machine known from DE-A-3 324 122 has the disadvantage that its power requirement is very large and that the pieces of wood which are divided transversely are not split in the direction of the fibers.

Der Erfindung liegt die Aufgabe zugrunde, eine Holzbalken-Zerkleinerungsmaschine mit erheblich kleinerem Kraftbedarf als ihn die bekannten Maschinen haben, anzugeben, die zudem die abgeteilten Holzstücke bei Bedarf auch in Faserrichtung aufspaltet.The invention has for its object to provide a wooden beam shredding machine with considerably less power than the known machines, which also splits the divided pieces of wood in the fiber direction if necessary.

Eine erfindungsgemäße Lösung dieser Aufgabe ist mit ihren Weiterbildungen in den Patentansprüchen gekennzeichnet.A solution to this problem according to the invention is characterized by its developments in the claims.

Die Erfindung geht von dem Grundgedanken aus, den Kraftbedarf durch eine pendelnde Aufhängung des Schlittens zu reduzieren. Erfindungsgemäß ist nämlich bekannt worden, daß eine Hauptursache für den großen Kraftbedarf der bekannten Maschinen ist, daß das Messer keine Ausweichbewegungen bei eingelagerten harten Stücken vollführen kann. Erfindungsgemäß ist deshalb der Schlitten in seinem oberen Teil pendelnd aufgehängt. Der Anstellwinkel zwischen der dem einlaufenden Schnittgut zugekehrten, nicht angeschärften Fläche des Messers und dem Boden eines das Schnittgut führenden Kanals ist durch eine erste, auf der Holzeinlaufseite befindliche Anschlageinrichtung auf 50 bis 80° nach oben hin bis zum Beginn des Schneidvorgangs begrenzt. Der sich während des Schneidvorgangs selbst unter dem Einfluß des Schneidwiderstandes und der pendelnden Aufhängung ergebende Anstellwinkel wird durch eine unterhalb auf der Holzauslaufseite befindliche zweite Anschlageinrichtung nach unten hin begrenzt.The invention is based on the basic idea of reducing the power requirement by means of an oscillating suspension of the slide. According to the invention, it has been known that a main reason for the large power requirement of the known machines is that the knife cannot perform any evasive movements when the hard pieces are stored. According to the invention, the sled is therefore suspended in its upper part. The angle of attack between the non-sharpened surface of the knife facing the incoming clippings and the bottom of a channel guiding the clippings is limited upwards by 50 to 80 ° by a first stop device located on the wood inlet side until the beginning of the cutting process. The angle of attack resulting during the cutting process itself under the influence of the cutting resistance and the oscillating suspension is limited downwards by a second stop device located below on the wood outlet side.

Die zweite Anschlageinrichtung kann gemäß Anspruch 2 auch durch einen am hinteren Ende des Schnittgutkanals angebrachten einstellbaren Anschlag für den unteren Querschnittsteil des Schnittguts ersetzt werden.The second stop device can also be replaced according to claim 2 by an adjustable stop attached to the rear end of the clippings duct for the lower cross-sectional part of the clippings.

Vorteilhafte Werte für den Anstellwinkel sind im Anspruch 3 angegeben.Advantageous values for the angle of attack are given in claim 3.

Dadurch, daß das Messer zunächst unter dem Einfluß der Schwerkraft mit großem Anstellwinkel am Schnittgut angreift und erst dann, nämlich nach einem selbsttätigen Schwenken des Schlittens unter dem Einfluß des Schneidwiderstands den eigentlichen Schneidvorgang mit geringerem Anstellwinkel durchführt, tritt eine erhebliche Kraftersparnis ein, die bis zu 60 % betragen kann. Für stark asthaltiges Holz werden große und für Hartholz kleine Anstellwinkel im Rahmen der vorstehend angegebenen Bereiche angewandt.Because the knife first acts under the influence of gravity with a large angle of attack on the clippings and only then, namely after an automatic swiveling of the carriage under the influence of the cutting resistance, does the actual cutting process with a smaller angle of attack, a considerable saving in force occurs, which can be up to Can be 60%. For wood with strong knots, large angles of attack for hardwood are used within the ranges specified above.

Zur Anpassung an unterschiedliche zu zerkleinernde Holzbalken sind jene Anschlageinrichtungen, die den Anstellwinkel nach oben bzw. unten begrenzen, verstellbar ausgebildet (Anspruch 4).To adapt to different wooden beams to be shredded, those stop devices that limit the angle of attack upwards or downwards are designed to be adjustable (claim 4).

Um besonders zähe Holzstücke in Faserrichtung aufzuspalten, ist gemäß Anspruch 10 wenigstens ein Spaltmesser am Schneidmesser in jeweils einer zu diesem rechtwinkligen und zum Schneidgut hin gerichteten Ebene angeordnet.In order to split particularly tough pieces of wood in the direction of the fibers, at least one splitting knife is arranged on the cutting knife in each case in a plane perpendicular to this and directed towards the material to be cut.

Vorteilhaft ist das Messer über ein gleichsinnig abgeschrägtes Keilstück am Schlitten auswechselbar befestigt (Anspruch 6); der Keilwinkel des Messers liegt dabei zwischen 20° und 40° (Anspruch 8) und der des Keilstücks bei etwa 45° (Anspruch 9). Die Holzteile werden dadurch so starken Zugspannungen ausgesetzt, daß sie quer zur Faserrichtung aufbrechen, was das Trocknen und die Handhabung beim Heizen fördert.The knife is advantageously exchangeably fastened to the slide via a wedge piece which is beveled in the same direction (claim 6); the wedge angle of the knife is between 20 ° and 40 ° (claim 8) and that of the wedge piece is about 45 ° (claim 9). The wooden parts are exposed to such strong tensile stresses that they break open transversely to the grain, which promotes drying and handling during heating.

Zur Bewegung des pendelnd aufgehängten, mit einem Schneidmesser versehenen Schlittens kann ein vorzugsweise verstellbares Kurbelgetriebe, ggfs. mit Untersetzungsgetriebe verwendet werden (Anspruch 18 bzw. 19).A preferably adjustable crank gear, possibly with a reduction gear, can be used to move the pendulum-suspended carriage provided with a cutting knife (claims 18 and 19, respectively).

Es kann dazu aber auch eine Hydraulikzylinder-Kolben-Einheit verwendet werden; der Schlitten wird dann vorteilhaft über ein Gleitführungsstück pendelnd aufgehängt. Ferner kann dann am Schlitten eine Stange parallel befestigt sein, die je einen Anschlag für den oberen bzw. unteren Totpunkt der Schlittenbewegung trägt; am Gleitführungsstück ist dabei ein von diesen Anschlägen mechanisch steuerbares Hydraulikventil angebracht, das durch eine Feder in der gewählten Stellung gehalten wird. Beim Anhebvorgang des Schlittens samt Messer schwenkt das Gleitführungsstück bis zum Anschlagen an die erste, also obere Anschlag- bzw. Stelleinrichtung zurück, sobald sich das Messer aus dem Schnittgut herausbewegt hat. Beim Absenkvorgang greift das Messer zunächst mit ziemlich großem Anstellwinkel eine gewisse Länge vor dem Ende des Schnittguts an und schiebt dieses so weit vor, bis das Gleitführungsstück an der zweiten, also unteren Anschlag- bzw. Stelleinrichtung anschlägt. Von da ab wird geschnitten, und zwar mit kleinerem Anstellwinkel.A hydraulic cylinder / piston unit can also be used for this; the slide is then advantageously suspended from a sliding guide piece. Further, then the slide a rod to be fixed in parallel, each bearing a stop for the top or bottom dead center of the i Schl kill motion; on the slide guide piece a mechanically controllable hydraulic valve is attached, which is held by a spring in the selected position. During the lifting process of the slide together with the knife, the sliding guide piece pivots back to the first, ie upper, stop or adjusting device as soon as the knife has moved out of the clippings. During the lowering process, the knife first engages with a fairly large angle of attack a certain length before the end of the clippings and pushes them forward until the sliding guide piece strikes the second, ie lower, stop or adjusting device. From there, the cut is made with a smaller angle of attack.

Je weiter das Gleitführungsstück samt Schlitten und Messer zurückpendelt, desto dicker werden die abgeschnittenen Holzstücke; diese Dicke kann also durch jene beiden Stelleinrichtungen eingestellt werden; sie wird umso geringer, je dicker das Schnittgut ist. Wenn man eine einheitliche Dicke der Holzstücke erreichen will, wird am hinteren Ende des Schnittgutkanals ein einstellbarer Anschlag für den unteren Querschnittsteil des Schnittguts angebracht; die zweite, untere Anschlag- bzw. Stelleinrichtung wird dann ggfs. überflüssig.The further the sliding guide piece, including the slide and knife, swings back, the thicker the cut pieces of wood become; this thickness can therefore be adjusted by means of these two adjusting devices; it gets smaller the thicker the clippings. If you want to achieve a uniform thickness of the pieces of wood, an adjustable stop for the lower cross section of the clippings is attached to the rear end of the clippings channel; the second, lower stop or actuating device may then become superfluous.

Zwecks Verbesserung der Schnittgut-Zuführung kann der Schnittgutkanal in Transportrichtung trichterförmig verengt ausgebildet sein. Um mehrere dünne Schnittgutteile nebeneinander verarbeiten zu können, wird der Boden des Schnittgutkanals zu seiner Querschnittsmitte hin muldenförmig vertieft ausgebildet (Anspruch 12); zur weiteren Verbesserung dienen schräg stehende Bleche, welche die unteren Innenkanten (Anspruch 13) des Schnittgutkanals überdecken. Ein ungewolltes Zurückschieben des Schnittguts kann dadurch verhindert werden, daß an der Decke des Schnittgutkanals innen Zacken oder scharftkantige Klappen schwenkbar angebracht sind, die in das Schnittgut oben etwas eindringen; auch kann der Boden des Schnittgutkanals in Transportrichtung stufen- oder sägezahnförmig abfallend ausgebildet sein. Schließlich können am Boden des Schnittgutkanals an seinem hinteren Ende Tragrollen angebracht sein, auf denen das Schnittgut vor Beginn des Schneidvorgangs durch das Messer vorgeschoben wird.In order to improve the supply of clippings, the clippings channel can be constricted in a funnel shape in the transport direction. In order to be able to process several thin clippings alongside one another, the bottom of the clippings channel is recessed in a trough-shaped manner towards its cross-sectional center (claim 12); for further improvement, sloping plates are used, which cover the lower inner edges (claim 13) of the clippings duct. An unwanted pushing back of the clippings can be prevented by having pivots or sharp-edged flaps pivotably attached to the ceiling of the clippings duct, which penetrate somewhat into the clippings above; the bottom of the clippings channel can also be designed to drop in a stepped or sawtooth shape in the transport direction. Finally, support rollers can be attached to the bottom of the clippings channel at its rear end, on which the clippings are pushed by the knife before the cutting process begins.

Das Ende der Absenkbewegung wird einstellbar ausgebildet, um den Messerverschleiß ausgleichen zu können. Die Umsteuerung der Schlittenbewegung vom Anheben zum Absenken erfolgt dann, wenn das untere Ende des Schlittens die erste, obere Stelleinrichtung überfahren hat.The end of the lowering movement is designed to be adjustable in order to compensate for knife wear. The reversal of the carriage movement from lifting to lowering takes place when the lower end of the carriage has passed over the first, upper actuating device.

Die Erfindung wird an Hand der Zeichnung erläutert; dabei zeigen

  • Figur 1 die Holzbalken-Zerkleinerungsmaschine mit Hydraulikantrieb, und zwar im Längsschnitt; und
  • Figur 1 a im Querschnitt längs der gebrochenen Linie A-A in Figur 1;
  • Figur 2 diese Maschine mit Totpunktsteuerung, wieder im Längsschnitt; und
  • Figur 3 die Holzbalken-Zerkleinerungsmaschine mit mechanischem, nämlich Kurbelgetriebe-Antrieb, und zwar im Längsschnitt.
The invention is explained with reference to the drawing; show
  • Figure 1 shows the wooden beam shredding machine with hydraulic drive, in longitudinal section; and
  • Figure 1 a in cross section along the broken line AA in Figure 1;
  • Figure 2 this machine with dead center control, again in longitudinal section; and
  • Figure 3 shows the wooden beam shredding machine with mechanical, namely crank gear drive, in longitudinal section.

Gemäß Figur 1 und 1a ist am Ende eines Transportkanals (9) für das Schnittgut (8) oben ein Gleitführungsstück (6) für einen Schlitten (5) pendelnd aufgehängt, der über ein Keilstück (2) ein Schneidmesser (1) mit quer zur Holzfaserrichtung liegender Schneide trägt. Dieser Schlitten ist durch eine Hydraulikzylinder-Kolben-Einheit (4) stoßweise vorschiebbar.According to FIGS. 1 and 1a, at the end of a transport channel (9) for the clippings (8), a sliding guide piece (6) for a carriage (5) is suspended in an oscillating manner, which has a cutting knife (1) with a wedge piece (2) transverse to the wood fiber direction lying cutting edge. This slide can be pushed forward intermittently by a hydraulic cylinder-piston unit (4).

In angehobenem Zustand nimmt der Schlitten unter dem Einfluß der Schwerkraft durch Anlage des Gleitführungsstücks an eine erste, auf der Holzeinlaufseite befindliche verstellbare Stelleinrichtung (7) einen ziemlich großen Anstellwinkel (ai) zum Schnittgutkanal ein, mit dem das Messer auch beim Absenken am Schnittgut oben angreift und dieses dann vorwärts schiebt; unter dem Einfluß des Schneidwiderstands gelangt der Schlitten sodann durch Anlage des Gleitführungsstücks an eine unterhalb der ersten auf der Holzauslaufseite befindliche zweite Stelleinrichtung (10) in eine Lage mit wesentlich geringerem Anstellwinkel (a2), mit dem bis zum Boden des Kanals geschnitten wird, worauf die Anhebbewegung einsetzt. Eine erneute Absenkbewegung setzt ein, sobald das untere Schlittenende die erste, obere Anschlag- bzw. Stelleinrichtung (7) erreicht hat.In the raised state, the slide takes on a rather large angle of attack (ai) to the clippings channel under the influence of gravity by contacting the sliding guide piece with a first adjustable adjusting device (7) located on the wood inlet side, with which the knife engages at the top even when the clippings are lowered and then push it forward; under the influence of the cutting resistance, the slide then comes into contact with a second adjusting device (10) located below the first on the wood outlet side in a position with a substantially smaller angle of attack (a 2 ), with which the cut is made to the bottom of the channel, by contacting the sliding guide piece, whereupon the lifting movement begins. Another lowering movement begins as soon as the lower slide end has reached the first, upper stop or adjusting device (7).

Messer (1) und Keilstück (2) sind gleichsinnig an der Holzauslaufseite abgeschrägt. Am Messer ist in einer zu ihm rechtwinkligen und zum Schnittgut hin gerichteten Ebene ein Spaftmesser (3) angebracht.Knife (1) and wedge piece (2) are bevelled in the same direction on the wood outlet side. A knife (3) is attached to the knife in a plane perpendicular to it and directed towards the clippings.

Der Keilwinkel des Keilstücks beträgt etwa 45°.The wedge angle of the wedge piece is approximately 45 °.

Gemäß Figur 2 ist am im Führungsstück gleitbar angeordneten Schlitten (5) einer derartigen Zerkleinerungsmaschine eine Stange (16) parallel befestigt; sie trägt je einen Anschlag (17, 18) für den oberen bzw. unteren Totpunkt der Schlittenbewegung. Am Gleitführungsstück ist ein von diesen Anschlägen mechanisch steuerbares Ventil (19) für die Hydraulikzylinder-Kolben-Einheit angebracht, das durch eine Feder (20) in der gewählten Stellung A oder B gehalten wird.According to FIG. 2, a rod (16) is fastened in parallel to the slide (5) of such a shredding machine which is slidably arranged in the guide piece; it carries a stop (17, 18) for the top and bottom dead center of the slide movement. A valve (19) for the hydraulic cylinder / piston unit that is mechanically controllable by these stops is attached to the sliding guide piece and is held in the selected position A or B by a spring (20).

An der Decke des Transportkanals (9) sind innen scharfkantige Klappen (12) schwenkbar angebracht, die ein Zurückschieben des Schnittguts (8) verhindern. Der Boden dieses Kanals weist an seinem hinteren Ende Tragrollen (14) für das Schnittgut (8) auf. Der Keilwinkel (µ) des Keilstücks beträgt etwa 45°.On the inside of the transport channel (9), sharp-edged flaps (12) are pivotally attached, which prevent the cut material (8) from being pushed back. The bottom of this channel has support rollers (14) for the clippings (8) at its rear end. The wedge angle (µ) of the wedge piece is approximately 45 °.

Die Hubbewegung des Schlittens kann dazu benutzt werden, um z. B. mittels einer Ratsche weiteres Schnittgut an die Zerkleinerungsmaschine heranzuführen. Bei großen Bäumen wird zweckmäßig vor dem Transportkanal (9) eine klappbare Rampe (21) vorgesehen, die mittels eines Beins (22) aufgestellt werden kann.The lifting movement of the carriage can be used to z. B. to introduce further clippings to the shredding machine by means of a ratchet. In the case of large trees, a foldable ramp (21) is expediently provided in front of the transport channel (9) and can be set up by means of a leg (22).

Gemäß Figur 3 ist zur Bewegung des pendelnden Schlittens (5) ein Kurbelgetriebe (24) angebracht, das über ein Untersetzungsgetriebe (25) angetrieben wird. Statt einer unteren Stelleinrichtung (10) ist hier am hinteren Ende des Transportkanals (9) ein einstellbarer Anschlag (23) für den unteren Querschnittsteil des Schnittguts (8) angebracht, der eine gleichmäßige Dicke der abgeschnittenen Holzteile gewährleistet. Der Boden des Transportkanals weist in Transportrichtung abfallende sägezahnförmige Stufen (13) auf, welche den Vorschub des Schnittguts (8) fördern.According to FIG. 3, a crank mechanism (24), which is driven via a reduction gear (25), is attached for moving the oscillating slide (5). Instead of a lower adjusting device (10), an adjustable stop (23) for the lower cross-sectional part of the cut material (8) is attached to the rear end of the transport channel (9), which ensures a uniform thickness of the cut wooden parts. The bottom of the transport channel has sawtooth-shaped steps (13) sloping in the transport direction, which promote the feed of the clippings (8).

In Fig. 3 ist die erste Anschlageinrichtung, die den Anstellwinkel (a1) nach oben begrenzt, nicht dargestellt.In Fig. 3, the first stop device, which limits the angle of attack (a 1 ) upwards, is not shown.

Claims (22)

1. Chopping machine for wooden beams wherein a cutter with a blada disposed in transverse relationship to the direction of the wood fibers is arranged at an intermittently feedable slide, characterized in that the upper part of the slide (5) is suspended to oscillate, that the setting angle (a1) between the surface of the cutter (1) which faces the entering material (8) to be cut and which is not scarfed, on the one hand, and the bottom of a passage (9), on the other hand, wherein the material to be cut is transferred, is upwardly restricted to 500 to 800 by first dog means (7) disposed at the wood entry side, under the influence of gravity until the cutting process begins, and that the setting angle (a2) resulting during the actual cutting process under the influence of the cutting resistance and the oscillating suspension is downwardly restricted to some 450 by second dog means (10) disposed below at the wood delivery side.
2. Chopping machine for wooden beams according to Claim 1, characterized in that an adjustable dog (23) for the lower part of the cross-sectional area of the material to be cut (8) is provided instead of said second dog means at the rear end of the transfer passage (9).
3. Chopping machine for wooden beams according to Claim 1 or 2, characterized in that the setting angle (a1) is upwardly restricted to 65° to 70°.
4. Chopping machine for wooden beams according to any of Claims 1 through 3, characterized in that the dog means (7 and 10) are adjustable.
5. Chopping machine for wooden beams according to Claim 4, characterized in that the dog means are setscrews (7, 10).
6. Chopping machine for wooden beams according to any of Claims 1 through 5, characterized in that the cutter (1) is fastened for replacement at the slide (5) through a wedge-shaped element (2) beveled in the same direction.
7. Chopping machine for wooden beams according to any of Claims 1 through 6, characterized in that the slide motion is reversed from raising to lowering as soon as the lower end of the slide (5) has reached the first top dog means (7).
8. Chopping machine for wooden beams according to any of Claims 1 through 5, characterized in that the wedge angle (µ) of the cutter (1) ranges between 20° and 40°.
9. Chopping machine for wooden beams according to any of Claims 1 through 7, characterized in that the wedge angle (µ) of the wedge-shaped element (2) roughly corresponds to 45°.
10. Chopping machine for wooden beams according to any of Claims 1 through 9, characterized in that at least one cleaving blade (3) is disposed at the cutter (1) in one respective plane at right angles to said cutter and to the material to be cut (8).
11. Chopping machine for wooden beams according to any of Claims 1 through 10, characterized in that the material transfer passage (9) is restricted to a funnel shape in the transfer direction (R).
12. Chopping machine for wooden beams according to any of Claims 1 through 11, characterized in that the bottom of the material transfer passage (9) is troughed towards the center of its cross- sectional area.
13. Chopping machine for wooden beams according to any of Claims 1 through 12, characterized in that the lower inside edges of the material transfer passage (9) are covered by inclined sheet metal elements (11 ).
14. Chopping machine for wooden beams according to any of Claims 1 through 13, characterized in that inside prongs or sharp-edged flaps (12) are disposed for pivoting motion at the top inside of the material transfer passage (9).
15. Chopping machine for wooden beams according to any of Claims 1 through 14, characterized in that the bottom (13) of the material transfer passage (9) is sloping downward in the transfer direction (R) either in steps or in saw-tooth ridges.
16. Chopping machine for wooden beams according to any of Claims 1 through 15, characterized in that the bottom of the material transfer passage (9) includes supporting wheels (14) at its rear end.
17. Chopping machine for wooden beams according to any of Claims 1 through 16, characterized in that a preferably adjustable crank gear (24), if necessary in combination with a reduction gear (25), is used to move the slide (5).
18. Chopping machine for wooden beams according to Claim 17, characterized in that said crank gear (24) includes a reduction gear (25).
19. Chopping machine for wooden beams according to any of Claims 1 through 18, characterized in that the slide (5) is suspended to oscillate, through a sliding-guide element (6).
20. Chopping machine for wooden beams according to Claim 19, characterized in that a hydraulic cylinder/piston unit (4) is used to move the slide (5) within the sliding-guide element (6).
21. Chopping machine for wooden beams according to Claim 20, characterized in that a rod (16) is fastened in parallel at the slide (5), which rod carries one dog each (17, 18) for the top or lower dead center of the slide movement, and that a valve (19) for the hydraulic piston unit (4) is disposed at the sliding-guide element (4), which valve may be mechanically controlled by said dogs and is maintained in the selected position (A or B) by a spring (20).
EP85110738A 1984-08-28 1985-08-27 Chopping machine for wooden beams Expired - Lifetime EP0173294B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110738T ATE49527T1 (en) 1984-08-28 1985-08-27 WOODEN BEAM SHREDDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431550 1984-08-28
DE19843431550 DE3431550A1 (en) 1984-08-28 1984-08-28 Wood shredder

Publications (2)

Publication Number Publication Date
EP0173294A1 EP0173294A1 (en) 1986-03-05
EP0173294B1 true EP0173294B1 (en) 1990-01-17

Family

ID=6244058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110738A Expired - Lifetime EP0173294B1 (en) 1984-08-28 1985-08-27 Chopping machine for wooden beams

Country Status (5)

Country Link
US (1) US4751949A (en)
EP (1) EP0173294B1 (en)
AT (1) ATE49527T1 (en)
CA (1) CA1247991A (en)
DE (2) DE3431550A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8621986D0 (en) * 1986-09-12 1986-10-22 Knight D J Log cutting machine
DE3914086A1 (en) * 1989-04-28 1990-10-31 Diemer Automat Gmbh CRUSHING MACHINE FOR WOOD, WOOD-LIKE MATERIALS AND THE LIKE
US5377569A (en) * 1993-05-07 1995-01-03 Xerox Corporation Signature booklet maker with a modified fold blade and a trim waste elimination device
US5465771A (en) * 1994-11-15 1995-11-14 Stone & Wood, Inc. Wood processing apparatus with impact hammer
US5492159A (en) * 1995-01-04 1996-02-20 Maloshicky; Henry Log-cutter splitter
US5921300A (en) * 1998-01-14 1999-07-13 Smith; Kelvin M. Log-splitting device
US6892616B2 (en) * 2000-11-28 2005-05-17 Uht Corporation Cutting apparatus
DE102007018290A1 (en) 2007-04-18 2008-10-30 Markus Fleckenstein Small dimensioned wood trimming and loading system, has plate with diamond-shaped grinding recess into which small dimensioned wood is introduced, where system cuts branches and stems along length during operation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1814726A (en) * 1928-08-27 1931-07-14 Evans Prod Co Riving machine
CH237565A (en) * 1943-10-02 1945-04-30 Fontana Di Luigi Giuseppe Wood shredding machine.
US2592782A (en) * 1947-01-10 1952-04-15 George E Zweifel & Company Hydraulic slicer
US2604913A (en) * 1947-03-25 1952-07-29 Charles F Bamford Machine for slicing veneer strips from wood blocks
US2530590A (en) * 1948-03-04 1950-11-21 United Shoe Machinery Corp Heel breasting machine
US2760533A (en) * 1953-06-10 1956-08-28 Balsa Proc Company Inc Wood slicing machine
FR2529821A1 (en) * 1982-07-06 1984-01-13 Fermo Tractor mounted hydraulic wood chopper and splitter

Also Published As

Publication number Publication date
CA1247991A (en) 1989-01-03
EP0173294A1 (en) 1986-03-05
US4751949A (en) 1988-06-21
DE3575389D1 (en) 1990-02-22
DE3431550A1 (en) 1986-03-20
ATE49527T1 (en) 1990-02-15

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