EP0067958B1 - Method for dividing round timber in several round timber sections of predetermined lengths - Google Patents

Method for dividing round timber in several round timber sections of predetermined lengths Download PDF

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Publication number
EP0067958B1
EP0067958B1 EP82104117A EP82104117A EP0067958B1 EP 0067958 B1 EP0067958 B1 EP 0067958B1 EP 82104117 A EP82104117 A EP 82104117A EP 82104117 A EP82104117 A EP 82104117A EP 0067958 B1 EP0067958 B1 EP 0067958B1
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EP
European Patent Office
Prior art keywords
round timber
piece
saw cut
log
sections
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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.)
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EP82104117A
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German (de)
French (fr)
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EP0067958A3 (en
EP0067958A2 (en
Inventor
Linck Maschinenfabrik Und Eisengiesserei "Gatterlinck" Gebruder
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Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Priority to AT82104117T priority Critical patent/ATE21645T1/en
Publication of EP0067958A2 publication Critical patent/EP0067958A2/en
Publication of EP0067958A3 publication Critical patent/EP0067958A3/en
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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
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • 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

  • the invention relates to a method for dividing logs into a plurality of log sections of a predetermined length according to the preamble of claim 1.
  • a method of the type mentioned is known (DE-OS 2 842 935). After the logs conveyed in their longitudinal direction have been cut to length by the first saw cut in such a way that a log piece whose length corresponds to the sum of the predetermined length of at least two log sections to be produced, this log piece is transferred to a conveyor bed by a transverse transfer device, where it is positioned in its longitudinal direction - while it rests on the conveyor bed - divided into the desired log sections by a further saw cut. While this second saw cut is taking place, no further piece of round wood can be transferred and no longitudinal positioning process can be carried out on the conveyor bed.
  • the working speed of the known method is therefore limited by the fact that the work steps of transferring the log piece to the conveyor bed, the longitudinal positioning of the log piece on the conveyor bed, dividing the log piece into the desired log cuts and further transport can only be carried out one after the other in time.
  • the object of the invention is therefore to develop a method of the type outlined in the preamble of claim 1 in such a way that a substantial increase in the working capacity, i.e. throughput of logs is achieved to allow adaptation to the increased capacities of modern sawing and profiling systems.
  • this object is achieved in that the further saw cut is carried out when the log piece is conveyed in the transverse direction, while at the same time a further, first saw cut is carried out.
  • the known method has achieved a temporal and spatial staggering of the saw cuts, the first saw cut being carried out on a conveyed log log when the previously cut log piece is still subjected to the second saw cut.
  • This enables a significant increase in the capacity for the cutting process to be achieved with comparatively little effort.
  • This makes it possible to load modern, high-performance sawing and profiling systems with a single dividing station, thereby avoiding the considerable additional personnel and technical effort for a second dividing station, which would otherwise be necessary in order to adapt the loading speed to the working speed of the sawing or To achieve the profiling system.
  • the simultaneous execution of several saw cuts on the same log which could also increase the capacity, would be associated with considerable difficulties that stand in the way of practical implementation.
  • the devices according to FIGS. 1 and 2 and according to FIGS. 3 and 4 have in common that the log 1 to be cut is conveyed in the longitudinal direction on a chain conveyor 2 and fed to a first circular saw 3 which is arranged in a gap in the chain conveyor 2 .
  • the chain conveyor track 2 is connected to a positioning device, not shown, which has, for example, foldable and / or longitudinally adjustable stops or which - as provided in the exemplary embodiment shown - has a pulse control with which the previously measured log 1 is conveyed to the position in which the circular saw 3 cuts off a piece of round wood 1 a with a first saw cut, in that the circular saw 3 is advanced transversely to the chain conveyor track 2.
  • the length of the cut log piece 1a corresponds in the example according to FIGS. 1 and 2 to the sum of the lengths of two log sections 1b and 1c which are to be achieved by the distribution process.
  • the cut log piece 1a has a length which corresponds to the sum of three log sections 1b, 1d and 1e, taking into account the saw cut joints.
  • the log piece 1a is ejected by a cross transfer device 4, which has, for example, movable punches, onto a roller conveyor bed 5 arranged parallel to the chain conveyor bed 2.
  • a cross transfer device 4 which has, for example, movable punches
  • the log piece 1a is shifted in its longitudinal direction and positioned thereby, e.g. is driven against adjustable stops 6.
  • the roller conveyor bed is located in the area of an ascending chain cross conveyor 7 which has a plurality of chains 8 arranged next to one another, each of which is provided with drivers 9.
  • the cross conveyor 7 is driven intermittently and takes over with its drivers 9 a log piece 1a from the roller conveyor bed 5 with each movement.
  • the log sections 1b and 1c at the upper end of the cross conveyor 7 reach a pivotable transfer device 11, through which they are fed to a chain longitudinal conveyor 12, which carries the log sections 1b and 1c, for example, to a sorting device downstream sawing and profiling system promotes.
  • the transfer device can be divided into separately operable sections in order to enable the individual transfer of the individual log sections.
  • the circular saw 10 is mounted on a swivel arm 13 which can be swiveled by means of a pressure-actuated cylinder 14. This allows two different ways of working depending on the thickness of the log. While the circular saw 10 is constantly in its upper position and the round wood is moved by the cross conveyor 7 against the circular saw 10 during the cutting of thinner round wood, the round wood piece is conveyed into the sawing position when the circular saw 10 is initially lowered. In this position the piece of log is held by a hold-down device 15 only indicated in FIG. 2, while the circular saw 10 is pivoted upwards by the cylinder 14 and saws through the piece of log.
  • the embodiment according to FIGS. 3 and 4 differs from the embodiment according to FIGS. 1 and 2 in that only the one log section 1b, which was separated from the log piece 1a when passing the circular saw 10, by the chain cross conveyor 7 in the described way is moved to the chain conveyor 12.
  • the log section 1c is fed by a shorter chain cross conveyor 7 'after the saw cut to a further roller conveyor bed 16, on which the log section 1c is positioned by longitudinal movement against an adjustable stop 17.
  • a further chain conveyor 7 ′′ also arranged in an ascending manner, lifts the log section 1c from the roller conveyor bed 17 and feeds it to a circular saw 18, which is designed and arranged in a corresponding manner, as was described in connection with the circular saw 10
  • Circular saw 18 divides the log section 1c into log sections 1d and 1e, which are then also transferred to the chain longitudinal conveyor 12 by a transfer device 11 '.
  • the capacity is approximately doubled compared to conventional dividing stations; 3 and 4, the capacity is even approximately tripled because in the time available for the first saw cut performed with the circular saw 3, two more saw cuts with the saws 10 and 18 are carried out simultaneously, a total of three log sections 1b, 1d, 1e being separated and conveyed away.
  • the method according to the invention can also be carried out in such a way that no circular saw 3 is provided in the area of the chain longitudinal conveyor device 2.
  • the log is here delivered to the roller conveyor 5 without a saw cut, positioned there in the longitudinal direction and fed to the circular saw 10.
  • the log section 1c separated there is then cut into the desired log sections 1d and 1e by a further circular saw 18, similar to the device according to FIGS. 3 and 4.

Abstract

1. Method for splitting up round timber into several timber sections of freely eligible given lengths, the round timber (1) being advanced and positioned in its longitudinal direction and a piece of round timber (1a) being separated by a first saw cut running transversely to the longitudinal direction of the round timber the piece then being transported away in transverse direction, positioned in a longitudinal direction and being subdivided by at least one further saw cut into the round timber sections (1b, 1c or, respectively, 1b, 1d, 1e), characterised by the fact that the further saw cut takes place when the round timber piece (1a) is advanced in a transverse direction, whilst at the same time a further first saw cut is carried out.

Description

Die Erfindung betrifft ein Verfahren zum Zerteilen von Rundholz in mehrere Rundholzabschnitte vorgegebener Länge nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for dividing logs into a plurality of log sections of a predetermined length according to the preamble of claim 1.

Das Zerteilen von Rundholz in die für die Weiterverarbeitung gewünschten Abschnitte kann in einfachster, aber sehr arbeitsaufwendiger Weise von Hand mittels Kettensägen erfolgen. Zur Verringerung dieses Arbeitsaufwands wurden ortsfest angeordnete Kettensägen, Kreissägen oder Bandsägen vorgesehen, denen das Rundholz unter Verwendung von Hebezeugen und/oder Transporteinrichtungen zugeführt wird.The cutting of logs into the sections required for further processing can be done by hand in a simple but very labor-intensive manner using chainsaws. To reduce this workload, stationary chainsaws, circular saws or band saws were provided, to which the logs are fed using lifting equipment and / or transport devices.

In weiterer Mechanisierung und Automatisierung dieses Arbeitsschrittes ist es bekannt, mittels elektronisch gesteuerter Einteilstationen die Einteilung des über Quer- und Längstransporteinrichtungen herangeförderten Rundholzstamms vorzunehmen, wobei das Rundholz durch einen einmaligen oder mehrfache Sägeschnitte quer zu seiner Längsrichtung zerteilt wird. Es ist bekannt, diese Einteilstationen programmgesteuert auszuführen.In a further mechanization and automation of this step, it is known to use electronically controlled dividing stations to divide the log trunk conveyed by transverse and longitudinal transport devices, the log being cut transversely to its longitudinal direction by a single or multiple saw cuts. It is known to carry out these scheduling stations under program control.

Ein Verfahren der eingangs genannten Gattung ist bekannt (DE-OS 2 842 935). Nachdem das in seiner Längsrichtung angeförderte Rundholz durch den ersten Sägeschnitt so abgelängt wurde, dass ein Rundholzstück entsteht, dessen Länge der Summe der vorgegebenen Länge mindestens zweier zu erzeugender Rundholzabschnitte entspricht, wird dieses Rundholzstück durch eine Querübergabevorrichtung auf ein Förderbett übergeben, dort in seiner Längsrichtung positioniert-während es auf dem Förderbett ruht- durch einen weiteren Sägeschnitt in die gewünschten Rundholzabschnitte aufgeteilt. Während dieser zweite Sägeschnitt erfolgt, kann kein weiteres Rundholzstück übergeben und auch kein Längspositioniervorgang auf dem Förderbett ausgeführt werden. Die Arbeitsgeschwindigkeit des bekannten Verfahrens ist daher dadurch begrenzt, dass die Arbeitsschritte der Übergabe des Rundholzstücks an das Förderbett, der Längspositionierung des Rundholzstücks auf dem Förderbett, des Aufteilens des Rundholzstücks in die gewünschten Rundholzanschnitte und des Weitertransports immer nur zeitlich nacheinander durchgeführt werden können.A method of the type mentioned is known (DE-OS 2 842 935). After the logs conveyed in their longitudinal direction have been cut to length by the first saw cut in such a way that a log piece whose length corresponds to the sum of the predetermined length of at least two log sections to be produced, this log piece is transferred to a conveyor bed by a transverse transfer device, where it is positioned in its longitudinal direction - while it rests on the conveyor bed - divided into the desired log sections by a further saw cut. While this second saw cut is taking place, no further piece of round wood can be transferred and no longitudinal positioning process can be carried out on the conveyor bed. The working speed of the known method is therefore limited by the fact that the work steps of transferring the log piece to the conveyor bed, the longitudinal positioning of the log piece on the conveyor bed, dividing the log piece into the desired log cuts and further transport can only be carried out one after the other in time.

Die Arbeitsgeschwindigkeit moderner Säge-und Zerspanungsanlagen (Profilieranlagen) konnte in der Vergangenheit ständig gesteigert werden, so dass die Kapazität moderner Anlagen eine so schnelle Zuführung der abgelängten Rundholzabschnitte erfordert, dass die zur Verfügung stehende Zeit für das Zerteilen des Rundholzes nicht mehr ausreicht. Mit dem bekannten Verfahren kann daher eine den Erfordernissen moderner Säge- und Zerspanungsanlagen entsprechende Menge von Rundholzabschnitten vorgegebener Länge nicht mehr geliefert werden.In the past, the working speed of modern sawing and chipping systems (profiling systems) could be increased continuously, so that the capacity of modern systems requires the cut logs to be fed so quickly that the time available for cutting the logs is no longer sufficient. With the known method it is therefore no longer possible to deliver an amount of round timber sections of a predetermined length which corresponds to the requirements of modern sawing and machining systems.

Eine Steigerung der Arbeitsgeschwindigkeit der bisherigen Verfahren zum Zerteilen von Rundholz war unter Berücksichtigung der für die einzelnen Sägeschnitte und den Ablauf der Rundholzstämme erforderlichen Zeit nicht mehr möglich.It was no longer possible to increase the working speed of the previous processes for cutting round logs, taking into account the time required for the individual saw cuts and the run of the logs.

Aufgabe der Erfindung ist es daher, ein Verfahren der im Oberbegriff des Anspruchs 1 umrissenen Gattung so auszubilden, dass eine wesentliche Steigerung der Arbeitskapazität, d.h. des Durchsatzes an Rundholz erreicht wird, um eine Anpassung an die gesteigerten Kapazitäten moderner Säge- und Profilieranlagen zu ermöglichen.The object of the invention is therefore to develop a method of the type outlined in the preamble of claim 1 in such a way that a substantial increase in the working capacity, i.e. throughput of logs is achieved to allow adaptation to the increased capacities of modern sawing and profiling systems.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass der weitere Sägeschnitt bei einer Förderung des Rundholzstücks in Querrichtung erfolgt, während gleichzeitig ein weiterer, erster Sägeschnitt ausgeführt wird.According to the invention, this object is achieved in that the further saw cut is carried out when the log piece is conveyed in the transverse direction, while at the same time a further, first saw cut is carried out.

Anstelle der bisher üblichen zeitlichen Aufeinanderfolge der einzelnen Sägeschnitte ist mit dem bekannten Verfahren eine zeitliche und räumliche Staffelung der Sägeschnitte erreicht worden, wobei der jeweils erste Sägeschnitt an einem herangeförderten Rundholzstamm bereits dann erfolgt, wenn das zuvor abgetrennte Rundholzstück noch dem zweiten Sägeschnitt unterworfen wird. Dadurch lässt sich mit vergleichsweise geringem Aufwand eine wesentliche Steigerung der Kapazität für den Zerteilungsvorgang erreichen. Damit wird es ermöglicht, moderne, leistungsstarke Säge- und Profilieranlagen mit einer einzigen Einteilstation zu beschicken, wodurch der erhebliche personelle und technische Mehraufwand für eine zweite Einteilstation vermieden wird, der anderenfalls erforderlich wäre, um eine Anpassung der Beschickungsgeschwindigkeit an die Arbeitsgeschwindigkeit der Säge- bzw. Profilieranlage zu erreichen. Die gleichzeitige Durchführung mehrerer Sägeschnitte an demselben Rundholzstamm, die ebenfalls eine Kapazitätssteigerung bringen könnte, wäre mit erheblichen Schwierigkeiten verbunden, die der praktischen Durchführung im Wege stehen.Instead of the previously usual chronological sequence of the individual saw cuts, the known method has achieved a temporal and spatial staggering of the saw cuts, the first saw cut being carried out on a conveyed log log when the previously cut log piece is still subjected to the second saw cut. This enables a significant increase in the capacity for the cutting process to be achieved with comparatively little effort. This makes it possible to load modern, high-performance sawing and profiling systems with a single dividing station, thereby avoiding the considerable additional personnel and technical effort for a second dividing station, which would otherwise be necessary in order to adapt the loading speed to the working speed of the sawing or To achieve the profiling system. The simultaneous execution of several saw cuts on the same log, which could also increase the capacity, would be associated with considerable difficulties that stand in the way of practical implementation.

Vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand von Unteransprüchen.Advantageous refinements of the inventive concept are the subject of dependent claims.

Die Erfindung wird nachfolgend in Ausführungsbeispielen näher erläutert, die in der Zeichnung dargestellt sind.The invention is explained in more detail below in exemplary embodiments which are illustrated in the drawing.

Es zeigt:

  • Fig. 1 eine Vorrichtung zum Zerteilen von Rundholz in vereinfachter Darstellungsweise in einer Draufsicht, wobei während der Querförderung nur ein weiterer Sägeschnitt erfolgt,
  • Fig. 2 einen vergrösserten Schnitt längs der Linie 11-11 in Fig. 1,
  • Fig. 3 in einer Draufsicht ähnlich der Fig. 1 eine Vorrichtung zum Zerteilen von Rundholz, wobei während der Querfördervorgänge zwei aufeinanderfolgende Sägeschnitte erfolgen, und
  • Fig. 4 einen Schnitt längs der Linie IV-IV in Fig. 3.
It shows:
  • 1 shows a device for dividing logs in a simplified representation in a top view, only one further saw cut being made during the transverse conveyance,
  • 2 is an enlarged section along the line 11-11 in Fig. 1,
  • Fig. 3 in a plan view similar to Fig. 1, a device for cutting logs, two consecutive saw cuts taking place during the transverse conveying processes, and
  • 4 shows a section along the line IV-IV in FIG. 3rd

Den Vorrichtungen nach den Fig. 1 und 2 und nach den Fig. 3 und 4 ist gemeinsam, dass das zu zerteilende Rundholz 1 auf einer Kettenförderbahn 2 in Längsrichtung herangefördert und einer ersten Kreissäge 3 zugeführt wird, die in einer Lücke der Kettenförderbahn 2 angeordnet ist.The devices according to FIGS. 1 and 2 and according to FIGS. 3 and 4 have in common that the log 1 to be cut is conveyed in the longitudinal direction on a chain conveyor 2 and fed to a first circular saw 3 which is arranged in a gap in the chain conveyor 2 .

Die Kettenförderbahn 2 ist mit einer nicht näher dargestellten Positioniereinrichtung verbunden, die beispielsweise wegklappbare und/oder längsverstellbare Anschläge aufweist oder die - wie beim dargestellten Ausführungsbeispiel vorgesehen - eine Impulssteuerung aufweist, mit der das vorher vermessene Rundholz 1 bis in diejenige Stellung gefördert wird, in der die Kreissäge 3 mit einem ersten Sägeschnitt ein Rundholzstück 1a abtrennt, indem die Kreissäge 3 quer zur Kettenförderbahn 2 vorgeschoben wird. Die Länge des abgetrennten Rundholzstücks 1a entspricht beim Beispiel nach den Fig. 1 und 2 der Summe der Längen von zwei Rundholzabschnitten 1b und 1c, die durch den Verteilvorgang erzielt werden sollen. Beim Beispiel nach den Fig. 3 und 4 hat das abgetrennte Rundholzstück 1a eine Länge, die der Summe von drei Rundholzabschnitten 1b, 1d und 1e unter Berücksichtigung der Sägeschnittfugen entspricht.The chain conveyor track 2 is connected to a positioning device, not shown, which has, for example, foldable and / or longitudinally adjustable stops or which - as provided in the exemplary embodiment shown - has a pulse control with which the previously measured log 1 is conveyed to the position in which the circular saw 3 cuts off a piece of round wood 1 a with a first saw cut, in that the circular saw 3 is advanced transversely to the chain conveyor track 2. The length of the cut log piece 1a corresponds in the example according to FIGS. 1 and 2 to the sum of the lengths of two log sections 1b and 1c which are to be achieved by the distribution process. In the example according to FIGS. 3 and 4, the cut log piece 1a has a length which corresponds to the sum of three log sections 1b, 1d and 1e, taking into account the saw cut joints.

Das Rundholzstück 1a wird durch eine Querübergabevorrichtung 4, die beispielsweise bewegbare Stempel aufweist, auf ein parallel zum Kettenförderbett 2 angeordnetes Rollenförderbett 5 abgeworfen. Auf diesem Rollenförderbett 5 wird das Rundholzstück 1a in seiner Längsrichtung verschoben und dabei positioniert, indem es z.B. gegen verstellbare Anschläge 6 gefahren wird. Das Rollenförderbett befindet sich im Bereich einer ansteigenden Ketten-Querfördereinrichtung 7, die mehrere, nebeneinander angeordnete Ketten 8 aufweist, die jeweils mit Mitnehmern 9 versehen sind. Die Querfördereinrichtung 7 wird intermittierend angetrieben und übernimmt bei jedem Bewegungsschritt mit ihren Mitnehmern 9 ein Rundholzstück 1a vom Rollenförderbett 5. Bei der Querförderung des Rundholzstücks 1a wird dieses gegen eine im Bereich der Querfördereinrichtung 7 angeordnete weitere Kreissäge 10 bewegt, die das Rundholzstück 1a in die Abschnitte 1b und 1c zerteilt, deren vorgegebene Länge durch den Positioniervorgang auf dem Rollenförderbett 5 eingestellt wurde.The log piece 1a is ejected by a cross transfer device 4, which has, for example, movable punches, onto a roller conveyor bed 5 arranged parallel to the chain conveyor bed 2. On this roller conveyor bed 5, the log piece 1a is shifted in its longitudinal direction and positioned thereby, e.g. is driven against adjustable stops 6. The roller conveyor bed is located in the area of an ascending chain cross conveyor 7 which has a plurality of chains 8 arranged next to one another, each of which is provided with drivers 9. The cross conveyor 7 is driven intermittently and takes over with its drivers 9 a log piece 1a from the roller conveyor bed 5 with each movement. During the cross conveyance of the log piece 1a, it is moved against a further circular saw 10 arranged in the area of the cross conveyor 7, which cuts the log piece 1a into the sections 1b and 1c divided, the predetermined length of which was set by the positioning process on the roller conveyor bed 5.

Bei der Vorrichtung nach den Fig. 1 und 2 gelangen die Rundholzabschnitte 1b und 1c am oberen Ende der Querfördereinrichtung 7 zu einer schwenkbaren Übergabevorrichtung 11, durch die sie einem Ketten-Längsförderer 12 zugeführt werden, der die Rundholzabschnitte 1b und 1c beispielsweise zu einer Sortiervorrichtung der nachgeordneten Säge- und Profilieranlage fördert. Die Übergabevorrichtung kann in gesondert betätigbare Abschnitte unterteilt sein, um die unabhängige Übergabe der einzelnen Rundholzabschnitte zu ermöglichen.1 and 2, the log sections 1b and 1c at the upper end of the cross conveyor 7 reach a pivotable transfer device 11, through which they are fed to a chain longitudinal conveyor 12, which carries the log sections 1b and 1c, for example, to a sorting device downstream sawing and profiling system promotes. The transfer device can be divided into separately operable sections in order to enable the individual transfer of the individual log sections.

Die Kreissäge 10 ist an einem Schwenkarm 13 gelagert, der mittels eines druckmittelbetätigten Zylinders 14 geschwenkt werden kann. Hierdurch sind je nach der Dicke des Rundholzes zwei verschiedene Arbeitsweisen möglich. Während sich beim Zerteilen von dünnerem Rundholz die Kreissäge 10 ständig in ihrer oberen Stellung befindet und das Rundholz durch die Querfördereinrichtung 7 gegen die Kreissäge 10 bewegt wird, erfolgt bei stärkerem Rundholz die Förderung des Rundholzstücks in die Sägeposition bei zunächst abgesenkter Kreissäge 10. In dieser Stellung wird das Rundholzstück durch einen in Fig. 2 nur angedeuteten Niederhalter 15 festgehalten, während die Kreissäge 10 durch den Zylinder 14 nach oben geschwenkt wird und das Rundholzstück durchsägt.The circular saw 10 is mounted on a swivel arm 13 which can be swiveled by means of a pressure-actuated cylinder 14. This allows two different ways of working depending on the thickness of the log. While the circular saw 10 is constantly in its upper position and the round wood is moved by the cross conveyor 7 against the circular saw 10 during the cutting of thinner round wood, the round wood piece is conveyed into the sawing position when the circular saw 10 is initially lowered. In this position the piece of log is held by a hold-down device 15 only indicated in FIG. 2, while the circular saw 10 is pivoted upwards by the cylinder 14 and saws through the piece of log.

Von der Ausführung nach den Fig. 1 und 2 unterscheidet sich die Ausführung nach den Fig. 3 und 4 dadurch, dass nur der eine Rundholzabschnitt 1b, der beim Passieren der Kreissäge 10 vom Rundholzstück 1a abgetrennt wurde, durch die Ketten-Querfördereinrichtung 7 in der beschriebenen Weise zum Ketten-Längsförderer 12 bewegt wird. Der Rundholzabschnitt 1c wird durch einen kürzeren Ketten-Querförderer 7' nach dem Sägeschnitt einem weiteren Rollen-Förderbett 16 zugeführt, auf dem der Rundholzabschnitt 1c durch Längsbewegung gegen einen verstellbaren Anschlag 17 positioniert wird. Eine weitere, ebenfalls ansteigend angeordnete Ketten-Querfördereinrichtung 7" hebt den Rundholzabschnitt 1c vom Rollen-Förderbett 17 ab und führt ihn einer Kreissäge 18 zu, die in entsprechender Weise ausgeführt und angeordnet ist, wie dies im Zusammenhang mit der Kreissäge 10 beschrieben wurde. Die Kreissäge 18 zerteilt den Rundholzabschnitt 1c in Rundholzabschnitte 1d und 1e, die dann ebenfalls durch eine Übergabevorrichtung 11' an den Ketten-Längsförderer 12 übergeben werden.The embodiment according to FIGS. 3 and 4 differs from the embodiment according to FIGS. 1 and 2 in that only the one log section 1b, which was separated from the log piece 1a when passing the circular saw 10, by the chain cross conveyor 7 in the described way is moved to the chain conveyor 12. The log section 1c is fed by a shorter chain cross conveyor 7 'after the saw cut to a further roller conveyor bed 16, on which the log section 1c is positioned by longitudinal movement against an adjustable stop 17. A further chain conveyor 7 ″, also arranged in an ascending manner, lifts the log section 1c from the roller conveyor bed 17 and feeds it to a circular saw 18, which is designed and arranged in a corresponding manner, as was described in connection with the circular saw 10 Circular saw 18 divides the log section 1c into log sections 1d and 1e, which are then also transferred to the chain longitudinal conveyor 12 by a transfer device 11 '.

Bei dem auf der Vorrichtung nach den Fig. 1 und 2 durchgeführten Verfahrensablauf, bei dem das zunächst abgetrennte Rundholzstück 1c die Länge von zwei Rundholzabschnitten 1d und 1e hat und nachfolgend einmal aufgeteilt wird, wird gegenüber herkömmlichen Einteilstationen angenähert eine Verdoppelung der Kapazität erreicht; bei dem auf der Vorrichtung nach den Fig. 3 und 4 durchgeführten Verfahrensablauf wird sogar angenähert eine Verdreifachung der Kapazität erreicht, weil in der Zeit, die für den ersten, mit der Kreissäge 3 durchgeführten Sägeschnitt zur Verfügung stehenden Zeit noch zwei weitere Sägeschnitte mit den Sägen 10 und 18 gleichzeitig durchgeführt werden, wobei insgesamt drei Rundholzabschnitte 1b, 1d, 1e abgetrennt und weggefördert werden.In the process sequence carried out on the device according to FIGS. 1 and 2, in which the initially cut round piece of wood 1c has the length of two round wood sections 1d and 1e and is subsequently divided once, the capacity is approximately doubled compared to conventional dividing stations; 3 and 4, the capacity is even approximately tripled because in the time available for the first saw cut performed with the circular saw 3, two more saw cuts with the saws 10 and 18 are carried out simultaneously, a total of three log sections 1b, 1d, 1e being separated and conveyed away.

Abweichend von den dargestellten Ausführungsbeispielen kann das erfindungsgemässe Verfahren auch in der Weise durchgeführt werden, dass im Bereich der Ketten-Längsfördereinrichtung 2 keine Kreissäge 3 vorgesehen ist. Das Rundholz wird hierbei ohne Sägeschnitt an die Rollenförderbahn 5 abgegeben, dort in Längsrichtung positioniert und der Kreissäge 10 zugeführt. Der dort abgetrennte Rundholzabschnitt 1c wird dann ähnlich wie bei der Vorrichtung nach den Fig. 3 und 4 durch eine weitere Kreissäge 18 in die gewünschten Rundholzabschnitte 1d und 1e zerlegt.In a departure from the exemplary embodiments shown, the method according to the invention can also be carried out in such a way that no circular saw 3 is provided in the area of the chain longitudinal conveyor device 2. The log is here delivered to the roller conveyor 5 without a saw cut, positioned there in the longitudinal direction and fed to the circular saw 10. The log section 1c separated there is then cut into the desired log sections 1d and 1e by a further circular saw 18, similar to the device according to FIGS. 3 and 4.

Es versteht sich, dass anstelle der in den Ausführungsbeispielen beschriebenen Kreissägen 3, 10 und 18 auch andere Sägen verwendet werden können, beispielsweise Kettensägen.It goes without saying that instead of the circular saws 3, 10 and 18 described in the exemplary embodiments, other saws can also be used, for example chain saws.

Claims (3)

1. Method for splitting up round timber into several timber sections of freely eligible given lengths, the round timber (1) being advanced and positioned in its longitudinal direction and a piece of round timber (1a) being separated by a first saw cut running transversely to the longitudinal direction of the round timber the piece then being transported away in transverse direction, positioned in a longitudinal direction and being subdivided by at least one further saw cut into the round timber sections (1b, 1c or, respectively, 1b, 1d, 1e), characterised by the fact that the further saw cut takes place when the round timber piece (1a) is advanced in a transverse direction, whilst at the same time a further first saw cut is carried out.
2. Method according to Claim 1, characterised by the fact that the round timber advanced (1) first moves out of its longitudinal conveyor track in transverse direction and is positioned in a longitudinal direction and that the first saw cut for separating the piece of round timber (1a) takes place at the succeeding transverse advancement of the round timber (1).
3. Method according to Claim 1 or 2, characterised ba the fact that at least one further longitudinal positioning action with subsequent transverse advancement and a saw cut taking place at that time follows on the saw cut taking place at the transverse advancement.
EP82104117A 1981-06-11 1982-05-12 Method for dividing round timber in several round timber sections of predetermined lengths Expired EP0067958B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82104117T ATE21645T1 (en) 1981-06-11 1982-05-12 PROCESS FOR CUTTING LOGS INTO SEVERAL LOG SECTIONS OF SPECIFIED LENGTH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3123086 1981-06-11
DE3123086A DE3123086C2 (en) 1981-06-11 1981-06-11 Method and device for cutting round wood into several round wood sections of a given length

Publications (3)

Publication Number Publication Date
EP0067958A2 EP0067958A2 (en) 1982-12-29
EP0067958A3 EP0067958A3 (en) 1983-07-20
EP0067958B1 true EP0067958B1 (en) 1986-08-27

Family

ID=6134401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104117A Expired EP0067958B1 (en) 1981-06-11 1982-05-12 Method for dividing round timber in several round timber sections of predetermined lengths

Country Status (5)

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EP (1) EP0067958B1 (en)
AT (1) ATE21645T1 (en)
DE (1) DE3123086C2 (en)
FI (1) FI70813C (en)
ZA (1) ZA824074B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799015A (en) * 1971-09-02 1974-03-26 T Bush Log processing machine
US4007654A (en) * 1975-09-25 1977-02-15 Oleson Sumner R Sawing apparatus of the pulpwood slasher type
AT364156B (en) * 1978-09-29 1981-09-25 Hammars Mekaniska Verkstad Ab DEVICE FOR DIVIDING A TRUNK IN SAW WOOD AND SHORT OR Cellulose wood

Also Published As

Publication number Publication date
FI70813B (en) 1986-07-18
FI821871A0 (en) 1982-05-26
EP0067958A3 (en) 1983-07-20
ZA824074B (en) 1983-04-27
ATE21645T1 (en) 1986-09-15
EP0067958A2 (en) 1982-12-29
FI70813C (en) 1986-10-27
DE3123086C2 (en) 1983-07-28
DE3123086A1 (en) 1982-12-30

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