EP2390070B1 - Saw for cutting firewood - Google Patents

Saw for cutting firewood Download PDF

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Publication number
EP2390070B1
EP2390070B1 EP11003950.0A EP11003950A EP2390070B1 EP 2390070 B1 EP2390070 B1 EP 2390070B1 EP 11003950 A EP11003950 A EP 11003950A EP 2390070 B1 EP2390070 B1 EP 2390070B1
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EP
European Patent Office
Prior art keywords
wood
cover
saw
cutting
basket
Prior art date
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Application number
EP11003950.0A
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German (de)
French (fr)
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EP2390070A1 (en
Inventor
Reinhold Bauer
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Scheppach GmbH
Original Assignee
Scheppach Fabrikation von Holzbearbeitungsmaschinen GmbH
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Publication of EP2390070A1 publication Critical patent/EP2390070A1/en
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Publication of EP2390070B1 publication Critical patent/EP2390070B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/16Saw benches
    • B27B5/22Saw benches with non-feedable circular saw blade
    • B27B5/222Saw benches with non-feedable circular saw blade the saw blade being arranged underneath the work-table; Guiding arrangements for the work-table
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B25/00Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws

Definitions

  • the invention relates to a firewood saw with at least one cutting tool in the form of a circular saw blade rotatable about a stationary axis, or provided with a revolving chain saw blade or a movable up and down saw blade, etc., in particular firewood circular saw, and with an attacked by the cutting tool, against this displaceable Clippings-receiving table, which is provided with a protective hood associated with the cutting tool and with an open end flanking clippings-investment device, which are associated with a clippings-holding device and a Thomasgut-covering device, which can be raised and lowered.
  • a firewood circular saw of the above kind is from the DE 1 868 477 U known.
  • the cut material covering device is rigidly connected to the cut material holding device.
  • the working position of the holding device is dependent on the diameter of the crop to which the holding device acts.
  • the result of the known arrangement is therefore also a working position of the covering device which depends on the diameter of the material to be cut.
  • the covering device does not reach the top of the table from a certain diameter of the material to be cut with its rear, lower edge, but remains in a position distanced therefrom.
  • the saw blade can appear.
  • sawdust and splinters can be ejected through the gap mentioned. For these reasons, therefore, there is a not inconsiderable risk of accidents.
  • the known arrangement proves therefore not as safe enough.
  • the Thomasgut-holding device and the Thomasgut-covering device in the holding or covering direction are movable relative to each other, wherein the Thomasgut-holding device is pivotally mounted on the Thomasgut-covering, which has a Abdeckkorb over the width of the clippings receiving table extends and is pivotally mounted in the region of its front in the feed direction, upper edge in the region of the upper edge of the width of the Thomasgut-receiving table, wall-like Thomasgut-note arthritis, and wherein the Thomasgut-holding device at least one overlapped by the cover of the clippings covering device, opposite this pivotable Andschreibbügel, which is associated with a slot of the basket by cross-actuating handle.
  • the decoupling according to the invention of the movements of the clippings holding device and the clippings covering device ensures that the covering device can be completely closed independently of the position of the holding device and accordingly independently of the diameter of the clippings.
  • the pivotal mounting of the holding device on the cover basket thereby advantageously allows a largely common pivotal movement of the holding device and covering device, which greatly simplifies the operation.
  • Another advantage is the fact that over the width of the clippings-receiving table extending and in the region of its front in the feed direction, upper edge in the region of the upper edge of also extending over the width of the Thomasgut-receiving table, wall-mounted Thomasgut plant pivotally mounted Abdeckkorb the Thomasgut-covering together with the wall-like Thomasgut plant practically a circumferentially closed , tunnel-shaped space can form, resulting in a reliable engagement and ejection protection.
  • the measures according to the invention accordingly ensure a high level of occupational safety and a high level of working comfort, since each cut not only completely covered regardless of the diameter, but also reliably pressed against the Thomasgut-conditioning of the receiving table and thus can be reliably maintained.
  • the cover of the Thomasgut-covering device having an approximately quarter-circular cross-section. This results in a particularly good adaptation to the male Thomasgut.
  • a further advantageous measure may consist in that the clippings holding device is designed as a double bow assembly with the Andrückbügeln flanking the cutting tool and this associated, at its rear end connected by a handle operating clips.
  • each Andschreibbügel mounted on the cover of the Thomasgut covering device can be connected by an operating handle articulated with a likewise mounted on the basket handlebar.
  • the Andschreibbügel with the Operating link connecting handlebar leads in an advantageous manner to a parallelogram-like four-bar arrangement, which ensures that the operating bar remains largely parallel to itself even in the case of a pivoting movement of the pressing device, which also facilitates the operation.
  • a further advantageous embodiment can be seen in the fact that the cover basket and the clippings Andschreib coupled their respective strokes supporting relief spring arrangements are associated with the attacking on the cover spring assembly on the table-side guard and acting on the Thomasgut-pressing device spring arrangement supported on the basket is.
  • the above-mentioned common pivoting movement e.g. facilitates the pivoting of covering and pressing device.
  • a further expedient measure may be that the cover basket is provided in the region of at least one end face, preferably in the region of the front side having a smaller distance from the saw blade, with a preferably releasably, but non-detachably attachable side wall. This can be determined by a chain machine side or arranged wegschwenkbar. As a result, the desired engagement protection is increased. Nevertheless, it is possible to produce larger cut-off lengths than normal with the sidewall removed or swiveled away.
  • Another, preferred training of the parent measures may consist in that an operable by means of the cover locking device is provided which allows in the rear position of the clippings-receiving table lifting the cover while locking the clippings-receiving table and this only when the covering device for releases a sliding movement. This ensures that the cover only in the rear end position of the clippings-receiving table, in which the saw blade is completely is located within the protective cover, can be opened and that the displacement table on the other hand only with closed cover basket is displaced. As a result, the achievable safety is further increased.
  • FIG. 1 underlying wooden circular saw, which is primarily used for cutting firewood, consists of a preferably mobile, here provided with rollers 1 and a drawbar 2 frame 3, on which a through Rundlinge 4 a, b of different diameter indicated cut material receiving cut-receiving table 5 in the table longitudinal direction is horizontally displaceable.
  • the clippings-receiving table 5 is usually stored on rollers not shown here. For this reason, circular saws of the present type are referred to in practice as so-called roll table circular saws.
  • circular saw blade 6 As a cutting tool indicated by broken lines circular saw blade 6 is provided which is rotatable about a stationary, ie frame-fixed, extending transversely to the feed axis and by means of an associated, recorded on the frame 3 motor 7 can be driven. As a rule, the saw blade 6 is received on the motor shaft. The saw blade 6 bearing shaft is located below the Thomasgut-receiving table 5. This is accordingly provided with a saw blade 6 associated with the passage slot. This is overlapped by a recorded on the table guard 8, in which the top of the table superior, the upper portion of the saw blade 5 in the FIG. 1 underlying, rear end position of the cut-receiving table 5 can completely submerge, so that there is an engagement protection.
  • the protective cover 8 consists of a slim, portal-shaped housing, which engages over the table-side passage slot for the saw blade 6 and is open to the rear. This rear end of the protective hood 8 is located between it flanking sections of a likewise arranged on the Thomasgut-receiving table 5, wall-shaped Thomasgut-Rooying 9, at the clippings taken on the clippings picking table 5 are applied.
  • the clippings-conditioning device 9 are a clippings-holding device 10, through which the clippings can be pressed against the wall-shaped contact device 9, and associated with a Thomasgut-covering device 11, through which the clippings is covered during the cutting process.
  • the cover 11 consists of a descriptive FIG. 3 apparent, in cross-section quarter-circular basket, which is pivotally mounted with the region of its front upper edge in the region of the upper edge of the clippings- Vogel worn 9 about a table-parallel axis 12.
  • Said basket consists of a correspondingly curved perforated plate, which is reinforced in the region of the basket ends and expediently between them by corresponding webs 13, which give a high dimensional stability and can also contain the pivot bearing.
  • the webs 13 may project beyond the front edge of the basket in the form of short tabs.
  • a handle 14 of the shredded cover device 11 forming basket suitably, as the Thomasgut- Printer 9 over the entire width of the clippings.
  • a lifting movement supporting his spring assembly 15. This includes in the example shown as out Fig. 3 It can be seen, two parallel coil springs. These engage on the one hand on the protective cover 8 and on the other hand on an associated respectively, from the rear upper edge region of the cut material covering device 11 forming basket obliquely upwardly projecting arm 16, like the FIGS. 1 and 2 show clearly.
  • the clippings-holding device 10 is in the active, the clippings position substantially overlapped by the Thomasgut-covering device 11 forming basket, as from the FIGS. 1 and 2 is apparent.
  • the clippings holding device 10 includes at least one, preferably two parallel, the saw blade 6 and the executed by this cutting flanking Andschreibbügel 17, each of which is assigned from the covering device 11 forming basket emergent actuating bracket 18.
  • Each of the operating bracket 18 is an in FIG. 3 recognizable passage slot 9 of the cover 11 forming basket assigned.
  • the parallel operating handle 18 connecting handle 20 is provided.
  • the clippings-holding device 10 is, as already mentioned above, for placing the clippings as the Thomasgut-covering device 11 can be pivoted upwards and is then applied to the clippings, so that it is pressed against the Thomasgut-conditioning device 9, as from the FIGS. 1 and 2 is recognizable.
  • the basket forming the cut material covering device 11 is lowered so far that it rests with its lower edge on the surface of the cut material receiving table 5.
  • the lowering movement of the clippings holding device 10 is terminated when the or the Andschreibbügel 17 comes to the clippings or come.
  • the holding device 11 is therefore lowered more or less, as in the FIGS.
  • the holding device 10 is pivotally mounted on the cover 11 forming the basket, so that despite mutual relative mobility a largely common lifting and lowering movement is possible.
  • the clippings holding device 10 is formed as a parallelogram-like four-bar arrangement, each Andschreibbügel 17 a this associated with parallel link 21, which is pivotally connected to the associated Andschreibbügel 17 by an associated operating bracket 18.
  • Each Andschreibbügel 17 and handlebar 21 is pivotally connected in the region of its upper end with the cover 11 forming the basket.
  • the design of the pressing device 10 as a four-bar arrangement ensures that the hinged to each one handlebar 21 and a Andschreibbügel 17 actuating bracket 18 in the course of the pivoting movements to be performed substantially parallel to itself, which makes the operation easier.
  • the clippings-holding device 10 is associated with the clippings cover device 11, a spring assembly 22 which supports the lifting movement.
  • This spring assembly 20 engages on the one hand on a projecting beyond the basket extension 23 of a link 21 and on the other hand on an obliquely projecting from the top of the basket of the cover 11 to the rear cantilever 24.
  • the extension 23 can be attached directly to a handlebar 21 or be connected via a the two links 21 interconnecting, the upper pivot bearing forming axis firmly hereby.
  • the Thomasgut-conditioning device 9 and each Andschreibbügel 17 of the clippings-holding device 10 may be provided with opposing teeth 25, 26, as the FIGS. 1 and 2 show clearly.
  • the plant-side teeth 25 can, as from FIG. 3 it can be seen, just be formed as the Andschreibbügeln 17 opposite racks.
  • the saw blade 6 is offset from the center of the cut-receiving table 5 to one side, so that there is a longer and a shorter section of the clippings-conditioning device 9.
  • the basket of the Thomasgut-covering device 11 may, as FIG. 3 clearly shows, on the shorter section of the bearing device 9 associated page with an end-side side wall 27th be provided which prevents lateral engagement in the cutting area, thus completing the desired engagement protection.
  • the side wall 27 may be suitably detachably attachable to the associated end face of the basket, so that in individual cases and cut material can be edited, which projects beyond the lateral end and the side edge of the Thomasgut-receiving table 5 in the region of the shorter portion of the shred-conditioning device 9.
  • At least one section length marking 33 is provided in the region of the clippings investment device 9.
  • a plurality of spaced apart juxtaposed, such markings may be provided, which facilitates the achievement of different section lengths.
  • the locking device 28 includes a arranged on the opposite side of the plant clippings plant 9, vertically slidable slide 29. This can be designed as a vertical rod or vertical tab, etc.
  • the slider 29 is hinged at its upper end to an obliquely upwardly projecting lug 30 of the basket of the cover 11 so that an upward and downward movement of the slider 29 results during pivoting of the basket.
  • the lower end of the slider 29 is a arranged below the Thomasgut-receiving table 5, stationary, ie fixed to the housing arranged stop 31 assigned. The latter is positioned so that the slide 29 extending through the receiving table 5 is blocked in a lowered position against movement in the feed direction of the receiving table 5. In this the FIG.
  • the receiving table 5 is in its rear end position and the basket of the cover 11 is folded up so that new clippings can be applied to the clippings investment facility 9.
  • the slider 29 is raised by means of the projection 30, whereby the lower slider end is disengaged from the associated stop 31 and accordingly the cut-receiving table 5 can be moved in the feed direction.
  • This situation is the FIG. 5 based.
  • the raised slider 29 is outside the rear end position of the Thomasgut-receiving table 5 on the entire feed path of the Thomasgut-receiving table 5 against lowering blocked, which then simultaneously blocked over the projection 30 hinged to the slider 29 basket of the cover 11 is blocked in its lowered position against lifting.
  • the slider 29 is arranged under the receiving table 5, adjoining the stop 31, in the feed direction of the receiving table 5 extending stop rail 32 associated with the lower end of the raised slide 29 engages over the entire displacement path of the cut receiving table 5, so that a lowering is impossible.
  • the lowered slide 29 associated stop 31 may be formed as a recess or rear end of the stop rail 32. In the example shown the rear end of the stop rail 32 bifurcated to form the stop 31.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Description

Die Erfindung betrifft eine Brennholzsäge mit mindestens einem Schneidwerkzeug in Form eines um eine stationäre Achse rotierbaren Kreissägeblatts, oder eines mit einer umlaufenden Kette versehenen Sägeschwerts oder eines auf- und abbewegbaren Sägeblatts etc., insbesondere Brennholzkreissäge, und mit einem vom Schneidwerkzeug durchgriffenen, gegenüber diesem verschiebbaren Schnittgut-Aufnahmetisch, der mit einer dem Schneidwerkzeug zugeordneten Schutzhaube und mit einer deren offenes Ende flankierenden Schnittgut-Anlageeinrichtung versehen ist, dem eine Schnittgut-Halteeinrichtung und eine Schnittgut-Abdeckeinrichtung zugeordnet sind, die heb- und senkbar sind.The invention relates to a firewood saw with at least one cutting tool in the form of a circular saw blade rotatable about a stationary axis, or provided with a revolving chain saw blade or a movable up and down saw blade, etc., in particular firewood circular saw, and with an attacked by the cutting tool, against this displaceable Clippings-receiving table, which is provided with a protective hood associated with the cutting tool and with an open end flanking clippings-investment device, which are associated with a clippings-holding device and a Schnittgut-covering device, which can be raised and lowered.

Eine Brennholzkreissäge obiger Art ist aus der DE 1 868 477 U bekannt. Bei dieser bekannten Anordnung ist die Schnittgut-Abdeckeinrichtung starr mit der Schnittgut-Halteeinrichtung verbunden. Die Arbeitsstellung der Halteeinrichtung ist abhängig vom Durchmesser des Schnittguts, an welchem die Halteeinrichtung angreift. In Folge der starren Verbindung der Halteeinrichtung mit der Abdeckeinrichtung ergibt sich bei der bekannten Anordnung daher auch eine vom Durchmesser des Schnittguts abhängige Arbeitsstellung der Abdeckeinrichtung. Es besteht daher die Gefahr, dass die Abdeckeinrichtung ab einem bestimmten Durchmesser des Schnittguts mit ihrem hinteren, unteren Rand die Tischoberseite nicht erreicht, sondern in einer hiervon distanzierten Stellung verbleibt. Im Bereich des so gebildeten Spalts zwischen Abdeckeinrichtung und Tischoberseite kann das Sägenblatt in Erscheinung treten. Außerdem können über den genannten Spalt Sägspäne und Splitter ausgeworfen werden. Aus diesen Gründen besteht daher eine nicht unbeträchtliche Unfallgefahr. Die bekannte Anordnung erweist sich daher als nicht arbeitssicher genug.A firewood circular saw of the above kind is from the DE 1 868 477 U known. In this known arrangement, the cut material covering device is rigidly connected to the cut material holding device. The working position of the holding device is dependent on the diameter of the crop to which the holding device acts. As a result of the rigid connection of the holding device with the covering, the result of the known arrangement is therefore also a working position of the covering device which depends on the diameter of the material to be cut. There is therefore the risk that the covering device does not reach the top of the table from a certain diameter of the material to be cut with its rear, lower edge, but remains in a position distanced therefrom. In the region of the gap thus formed between covering device and table top, the saw blade can appear. In addition, sawdust and splinters can be ejected through the gap mentioned. For these reasons, therefore, there is a not inconsiderable risk of accidents. The known arrangement proves therefore not as safe enough.

Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, eine Brennholzkreissäge eingangs erwähnter Art mit einfachen und kostengünstigen Mitteln so zu verbessern, dass eine hohe Arbeitssicherheit erreicht wird.On this basis, it is therefore an object of the present invention to improve a firewood circular saw of the kind mentioned with simple and inexpensive means so that a high level of safety is achieved.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Schnittgut-Halteeinrichtung und die Schnittgut-Abdeckeinrichtung in Halte- bzw. Abdeckrichtung relativ zueinander beweglich sind, wobei die Schnittgut-Halteeinrichtung auf der Schnittgut-Abdeckeinrichtung schwenkbar gelagert ist, die einen Abdeckkorb aufweist, der sich über die Breite des Schnittgut-Aufnahmetischs erstreckt und im Bereich seines in Vorschubrichtung vorderen, oberen Rands im Bereich des oberen Rands der sich ebenfalls über die Breite des Schnittgut-Aufnahmetischs erstreckenden, wandförmigen Schnittgut-Anlageeinrichtung schwenkbar gelagert ist, und wobei die Schnittgut-Halteeinrichtung wenigstens einen vom Abdeckkorb der Schnittgut-Abdeckeinrichtung übergriffenen, gegenüber dieser schwenkbaren Andrückbügel aufweist, dem ein einen Schlitz des Abdeckkorbs durchgreifender Betätigungsbügel zugeordnet ist.This object is achieved in that the Schnittgut-holding device and the Schnittgut-covering device in the holding or covering direction are movable relative to each other, wherein the Schnittgut-holding device is pivotally mounted on the Schnittgut-covering, which has a Abdeckkorb over the width of the clippings receiving table extends and is pivotally mounted in the region of its front in the feed direction, upper edge in the region of the upper edge of the width of the Schnittgut-receiving table, wall-like Schnittgut-Anlageeinrichtung, and wherein the Schnittgut-holding device at least one overlapped by the cover of the clippings covering device, opposite this pivotable Andrückbügel, which is associated with a slot of the basket by cross-actuating handle.

Durch die erfindungsgemäße Entkopplung der Bewegungen der Schnittgut-Halteeinrichtung und der Schnittgut-Abdeckeinrichtung ist sichergestellt, dass die Abdeckeinrichtung unabhängig von der Position der Halteeinrichtung und dementsprechend unabhängig vom Durchmesser des Schnittguts vollkommen geschlossen werden kann. Die schwenkbare Aufnahme der Halteeinrichtung auf dem Abdeckkorb ermöglicht dabei in vorteilhafter Weise dennoch eine weitgehend, gemeinsame Schwenkbewegung von Halteeinrichtung und Abdeckeinrichtung, was die Bedienung sehr vereinfacht. Gleichzeitig ist sichergestellt, dass die Schnittgut-Halteeinrichtung mittels des den Abdeckkorb der Schnittgut-Abdeckeinrichtung durchgreifenden Betätigungsbügels bei geschlossenem, das heißt abgesenktem Abdeckkorb auf einfache Weise betätigbar ist, was eine hohe Sicherheit gewährleistet. Ein weiterer Vorteil ist darin zu sehen, dass der sich über die Breite des Schnittgut-Aufnahmetischs erstreckende und im Bereich seines in Vorschubrichtung vorderen, oberen Rands im Bereich des oberen Rands der sich ebenfalls über die Breite des Schnittgut-Aufnahmetischs erstreckenden, wandförmigen Schnittgut-Anlage schwenkbar gelagerte Abdeckkorb der Schnittgut-Abdeckeinrichtung zusammen mit der wandförmigen Schnittgut-Anlage praktisch einen umlaufend geschlossenen, tunnelförmigen Raum bilden kann, wodurch sich ein zuverlässiger Eingriff- und Auswurfschutz ergibt. Die erfindungsgemäßen Maßnahmen gewährleisten dementsprechend eine hohe Arbeitssicherheit sowie einen hohen Arbeitskomfort, da jedes Schnittgut unabhängig vom Durchmesser nicht nur vollkommen abgedeckt, sondern auch zuverlässig an die Schnittgut-Anlage des Aufnahmetischs angedrückt und damit zuverlässig gehalten werden kann.The decoupling according to the invention of the movements of the clippings holding device and the clippings covering device ensures that the covering device can be completely closed independently of the position of the holding device and accordingly independently of the diameter of the clippings. The pivotal mounting of the holding device on the cover basket thereby advantageously allows a largely common pivotal movement of the holding device and covering device, which greatly simplifies the operation. At the same time, it is ensured that the clippings-holding device by means of the cover of the clippings-covering device by cross-actuating handle with closed, ie lowered basket is easily operable, which ensures a high level of security. Another advantage is the fact that over the width of the clippings-receiving table extending and in the region of its front in the feed direction, upper edge in the region of the upper edge of also extending over the width of the Schnittgut-receiving table, wall-mounted Schnittgut plant pivotally mounted Abdeckkorb the Schnittgut-covering together with the wall-like Schnittgut plant practically a circumferentially closed , tunnel-shaped space can form, resulting in a reliable engagement and ejection protection. The measures according to the invention accordingly ensure a high level of occupational safety and a high level of working comfort, since each cut not only completely covered regardless of the diameter, but also reliably pressed against the Schnittgut-conditioning of the receiving table and thus can be reliably maintained.

Vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den Unteransprüchen angegeben.Advantageous embodiments and expedient developments of the higher-level measures are specified in the subclaims.

Vorteilhaft kann der Abdeckkorb der Schnittgut-Abdeckeinrichtung einen etwa viertelkreisförmigen Querschnitt aufweisen. Hierdurch ergibt sich eine besonders gute Anpassung an das aufzunehmende Schnittgut.Advantageously, the cover of the Schnittgut-covering device having an approximately quarter-circular cross-section. This results in a particularly good adaptation to the male Schnittgut.

Eine weitere vorteilhafte Maßnahme kann darin bestehen, dass die Schnittgut-Halteeinrichtung als Doppelbügelanordnung mit das Schneidwerkzeug flankierenden Andrückbügeln und diesen zugeordneten, an ihrem hinteren Ende durch einen Griff verbundenen Betätigungsbügeln ausgebildet ist. Mit diesen Maßnahmen lässt sich eine Kippbewegung des Schneidguts unter der Wirkung der Schneidkräfte und damit eine Klemmung des Sägenblatts zuverlässig vermeiden. Dennoch ist eine Einhandbedienung der Schnittgut-Halteeinrichtung möglich.A further advantageous measure may consist in that the clippings holding device is designed as a double bow assembly with the Andrückbügeln flanking the cutting tool and this associated, at its rear end connected by a handle operating clips. With these measures, a tilting movement of the material to be cut under the action of the cutting forces and thus a clamping of the saw blade can be reliably avoided. Nevertheless, a one-handed operation of the clippings holding device is possible.

In weiterer Fortbildung der übergeordneten Maßnahmen kann jeder auf dem Abdeckkorb der Schnittgut-Abdeckeinrichtung gelagerte Andrückbügel durch einen Betätigungsbügel gelenkig mit einem ebenfalls auf dem Abdeckkorb gelagerten Lenker verbunden sein. Der den Andrückbügel mit dem Betätigungsbügel verbindende Lenker führt in vorteilhafter Weise zu einer parallelogrammartigen Viergelenkanordnung, die sicherstellt, dass der Betätigungsbügel auch im Falle einer Schwenkbewegung der Andrückeinrichtung weitgehend parallel zu sich selbst bleibt, was die Bedienung ebenfalls erleichtert.In a further development of the higher-level measures, each Andrückbügel mounted on the cover of the Schnittgut covering device can be connected by an operating handle articulated with a likewise mounted on the basket handlebar. The Andrückbügel with the Operating link connecting handlebar leads in an advantageous manner to a parallelogram-like four-bar arrangement, which ensures that the operating bar remains largely parallel to itself even in the case of a pivoting movement of the pressing device, which also facilitates the operation.

Eine weitere, vorteilhafte Ausgestaltung kann darin gesehen werden, dass dem Abdeckkorb und der Schnittgut-Andrückeinrichtung ihre jeweiligen Hubbewegungen unterstützende Entlastungs-Federanordnungen zugeordnet sind, wobei die am Abdeckkorb angreifende Federanordnung an der tischseitigen Schutzhaube und die an der Schnittgut-Andrückeinrichtung angreifende Federanordnung am Abdeckkorb abgestützt ist. Hierdurch wird die oben erwähnte gemeinsame Schwenkbewegung z.B. zum Hochschwenken von Abdeckeinrichtung und Andrückeinrichtung erleichtert.A further advantageous embodiment can be seen in the fact that the cover basket and the clippings Andrückeinrichtung their respective strokes supporting relief spring arrangements are associated with the attacking on the cover spring assembly on the table-side guard and acting on the Schnittgut-pressing device spring arrangement supported on the basket is. As a result, the above-mentioned common pivoting movement, e.g. facilitates the pivoting of covering and pressing device.

Eine weitere zweckmäßige Maßnahme kann darin bestehen, dass der Abdeckkorb im Bereich wenigstens einer Stirnseite, vorzugsweise im Bereich der einen kleineren Abstand vom Sägenblatt aufweisenden Stirnseite, mit einer vorzugsweise lösbar, aber unverlierbar anbringbaren Seitenwand versehen ist. Diese kann durch eine Kette maschinenseitig festgelegt oder wegschwenkbar angeordnet sein. Hierdurch wird der erwünschte Eingriffsschutz erhöht. Dennoch besteht die Möglichkeit, bei abgenommener oder abgeschwenkter Seitenwand auch größere Abschnittlängen als normal zu erzeugen.A further expedient measure may be that the cover basket is provided in the region of at least one end face, preferably in the region of the front side having a smaller distance from the saw blade, with a preferably releasably, but non-detachably attachable side wall. This can be determined by a chain machine side or arranged wegschwenkbar. As a result, the desired engagement protection is increased. Nevertheless, it is possible to produce larger cut-off lengths than normal with the sidewall removed or swiveled away.

Eine weitere, bevorzugte Fortbildung der übergeordneten Maßnahmen kann darin bestehen, dass eine mittels der Abdeckeinrichtung betätigbare Verriegelungseinrichtung vorgesehen ist, die in der hinteren Stellung des Schnittgut-Aufnahmetischs ein Anheben der Abdeckeinrichtung bei gleichzeitiger Verriegelung des Schnittgut-Aufnahmetischs ermöglicht und diesen nur bei geschlossener Abdeckeinrichtung für eine Verschiebebewegung freigibt. Hierdurch wird sichergestellt, dass der Abdeckkorb nur in der hinteren Endstellung des Schnittgut-Aufnahmetischs, in welcher das Sägenblatt sich vollständig innerhalb der Schutzhaube befindet, geöffnet werden kann und dass der Verschiebetisch andererseits nur bei geschlossenem Abdeckkorb verschiebbar ist. Hierdurch wird die erzielbare Arbeitssicherheit weiter gesteigert.Another, preferred training of the parent measures may consist in that an operable by means of the cover locking device is provided which allows in the rear position of the clippings-receiving table lifting the cover while locking the clippings-receiving table and this only when the covering device for releases a sliding movement. This ensures that the cover only in the rear end position of the clippings-receiving table, in which the saw blade is completely is located within the protective cover, can be opened and that the displacement table on the other hand only with closed cover basket is displaced. As a result, the achievable safety is further increased.

Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den restlichen Unteransprüchen angegeben und aus der nachstehenden Beispielsbeschreibung anhand der Zeichnung näher entnehmbar.Further advantageous embodiments and expedient developments of the parent measures are specified in the remaining subclaims and from the following description of the example with reference to the drawing closer.

In der nachstehend beschriebenen Zeichnung zeigen:

Figur 1
eine Seitenansicht einer erfindungsgemäßen Rolltisch-Kreissäge mit in der hinteren Endstellung sich befindendem SchnittgutAufnahmetischs;
Figur 2
die Anordnung gemäß Figur 1 mit gegenüber der hinteren Endstellung in Vorschubrichtung bewegtem SchnittgutAufnahmetisch;
Figur 3
eine perspektivische Ansicht der Anordnung gemäß Figur 1 mit geöffnetem Abdeckkorb von schräg hinten;
Figur 4
eine perspektivische Ansicht der Anordnung gemäß Figur 1 mit geöffnetem Abdeckkorb von schräg vome und
Figur 5
die Anordnung gemäß Figur 4 mit geschlossenem Abdeckkorb.
In the drawing described below:
FIG. 1
a side view of a rolling table circular saw according to the invention with in the rear end position befindendem SchnittgutEufnahmetisch;
FIG. 2
the arrangement according to FIG. 1 with respect to the rear end position in the feed direction moving Schnittgutausorption table;
FIG. 3
a perspective view of the arrangement according to FIG. 1 with opened cover from diagonally behind;
FIG. 4
a perspective view of the arrangement according to FIG. 1 with open top of oblique vome and
FIG. 5
the arrangement according to FIG. 4 with closed basket.

Die der Figur 1 zugrunde liegende Holzkreissäge, die in erster Linie zum Schneiden von Brennholz dient, besteht aus einem vorzugsweise fahrbaren, hier mit Rollen 1 und einer Deichsel 2 versehenen Gestell 3, auf dem ein das durch Rundlinge 4a, b unterschiedlichen Durchmessers angedeutete Schnittgut aufnehmender Schnittgut-Aufnahmetisch 5 in Tischlängsrichtung horizontal verschiebbar ist. Der Schnittgut-Aufnahmetisch 5 ist in der Regel auf hier nicht näher dargestellten Rollen gelagert. Aus diesem Grund werden Kreissägen hier vorliegender Art in der Praxis auch als sogenannte Rolltisch-Kreissägen bezeichnet.The the FIG. 1 underlying wooden circular saw, which is primarily used for cutting firewood, consists of a preferably mobile, here provided with rollers 1 and a drawbar 2 frame 3, on which a through Rundlinge 4 a, b of different diameter indicated cut material receiving cut-receiving table 5 in the table longitudinal direction is horizontally displaceable. The clippings-receiving table 5 is usually stored on rollers not shown here. For this reason, circular saws of the present type are referred to in practice as so-called roll table circular saws.

Als Schneidwerkzeug ist ein mit unterbrochenen Linien angedeutetes Kreissägenblatt 6 vorgesehen, das um eine stationäre, d.h. gestellfeste, quer zur Vorschubrichtung verlaufende Achse drehbar und mittels eines zugeordneten, auf dem Gestell 3 aufgenommenen Motors 7 antreibbar ist. In der Regel ist das Sägenblatt 6 auf der Motorwelle aufgenommen. Die das Sägenblatt 6 tragende Welle befindet sich unterhalb des Schnittgut-Aufnahmetischs 5. Dieser ist dementsprechend mit einem dem Sägenblatt 6 zugeordneten Durchtrittsschlitz versehen. Dieser wird von einer auf dem Tisch aufgenommenen Schutzhaube 8 übergriffen, in welche der die Tischoberseite überragende, obere Bereich des Sägenblatts 5 in der der Figur 1 zugrunde liegenden, hinteren Endstellung des Schnittgut-Aufnahmetischs 5 vollständig eintauchen kann, so dass sich ein Eingriffsschutz ergibt.As a cutting tool indicated by broken lines circular saw blade 6 is provided which is rotatable about a stationary, ie frame-fixed, extending transversely to the feed axis and by means of an associated, recorded on the frame 3 motor 7 can be driven. As a rule, the saw blade 6 is received on the motor shaft. The saw blade 6 bearing shaft is located below the Schnittgut-receiving table 5. This is accordingly provided with a saw blade 6 associated with the passage slot. This is overlapped by a recorded on the table guard 8, in which the top of the table superior, the upper portion of the saw blade 5 in the FIG. 1 underlying, rear end position of the cut-receiving table 5 can completely submerge, so that there is an engagement protection.

In dieser hinteren Endstellung des Schnittgut-Aufnahmetischs 5 wird dieser mit dem Schnittgut beladen. Zum Schneiden des Schnittguts wird der Schnittgut-Aufnahmetisch 5 gegenüber dem Gestell 3 und damit dem hierauf gelagerten Sägenblatt 6 nach vorne, in Figur 1 nach links, verschoben, wodurch das Sägenblatt 6 aus der Schutzhaube 8 heraustritt und zum Eingriff mit dem Schnittgut kommt, wie aus Figur 2 hervorgeht.In this rear end position of the cut-receiving table 5 this is loaded with the clippings. To cut the cuttings of the clippings-receiving table 5 relative to the frame 3 and thus the saw blade 6 mounted thereon forward, in FIG. 1 to the left, moved, whereby the saw blade 6 emerges from the protective cover 8 and comes to engage with the cut, as from FIG. 2 evident.

Die Schutzhaube 8 besteht aus einem schlanken, im Querschnitt portalförmigen Gehäuse, das den tischseitigen Durchtrittsschlitz für das Sägenblatt 6 übergreift und nach hinten offen ist. Dieses hintere Ende der Schutzhaube 8 befindet sich zwischen es flankierenden Abschnitten einer ebenfalls auf dem Schnittgut-Aufnahmetisch 5 angeordneten, wandförmigen Schnittgut-Anlageeinrichtung 9, an der das auf dem Schnittgut-Aufnahmetisch 5 aufgenommene Schnittgut angelegt wird. Der Schnittgut-Anlageeinrichtung 9 sind eine Schnittgut-Halteeinrichtung 10, durch welche das Schnittgut an die wandförmige Anlageeinrichtung 9 andrückbar ist, sowie eine Schnittgut-Abdeckeinrichtung 11 zugeordnet, durch welche das Schnittgut während des Schneidvorgangs verdeckt wird.The protective cover 8 consists of a slim, portal-shaped housing, which engages over the table-side passage slot for the saw blade 6 and is open to the rear. This rear end of the protective hood 8 is located between it flanking sections of a likewise arranged on the Schnittgut-receiving table 5, wall-shaped Schnittgut-Anlageeinrichtung 9, at the clippings taken on the clippings picking table 5 are applied. The clippings-conditioning device 9 are a clippings-holding device 10, through which the clippings can be pressed against the wall-shaped contact device 9, and associated with a Schnittgut-covering device 11, through which the clippings is covered during the cutting process.

Die Abdeckeinrichtung 11 besteht aus einem anschaulich aus Figur 3 ersichtlichen, im Querschnitt viertelkreisförmigen Korb, der mit dem Bereich seines vorderen oberen Rands im Bereich des oberen Rands der Schnittgut-Anlageeinrichtung 9 um eine tischparallele Achse 12 schwenkbar gelagert ist. Der genannte Korb besteht aus einem entsprechend gebogenen Lochblech, das im Bereich der Korbenden und zweckmäßig auch dazwischen durch entsprechende Stege 13 verstärkt ist, die eine hohe Formsteifigkeit ergeben und auch die Schwenklagerung enthalten können. Hierzu können die Stege 13 den vorderen Rand des Korbs in Form kurzer Laschen überragen. Der die Schnittgut-Abdeckeinrichtung 11 bildende Korb reicht zweckmäßig, wie die Schnittgut-Anlageeinrichtung 9 über die ganze Breite des Schnittgut-Aufnahmetischs 5. Zur Bedienung des genannten Korbs ist dieser im Bereich seines hinteren, unteren Rands mit einem Griff 14 versehen. Zur Erleichterung der Bedienung ist dem Korb eine seine Hubbewegung unterstützende Federanordnung 15 zugeordnet. Diese umfasst im dargestellten Beispiel, wie aus Fig. 3 erkennbar ist, zwei parallele Schraubenfedern. Diese greifen einerseits an der Schutzhaube 8 und andererseits an einem jeweils zugeordneten, vom hinteren oberen Randbereich des die Schnittgut-Abdeckeinrichtung 11 bildenden Korbs schräg nach oben abstehenden Arm 16 an, wie die Figuren 1 und 2 anschaulich zeigen.The cover 11 consists of a descriptive FIG. 3 apparent, in cross-section quarter-circular basket, which is pivotally mounted with the region of its front upper edge in the region of the upper edge of the clippings-Anlageeinrichtung 9 about a table-parallel axis 12. Said basket consists of a correspondingly curved perforated plate, which is reinforced in the region of the basket ends and expediently between them by corresponding webs 13, which give a high dimensional stability and can also contain the pivot bearing. For this purpose, the webs 13 may project beyond the front edge of the basket in the form of short tabs. For the operation of the said basket, this is provided in the region of its rear, lower edge with a handle 14 of the shredded cover device 11 forming basket suitably, as the Schnittgut-Anlageeinrichtung 9 over the entire width of the clippings. To facilitate the operation of the basket is associated with a lifting movement supporting his spring assembly 15. This includes in the example shown as out Fig. 3 It can be seen, two parallel coil springs. These engage on the one hand on the protective cover 8 and on the other hand on an associated respectively, from the rear upper edge region of the cut material covering device 11 forming basket obliquely upwardly projecting arm 16, like the FIGS. 1 and 2 show clearly.

Die Schnittgut-Halteeinrichtung 10 ist in der aktiven, am Schnittgut anliegenden Position im Wesentlichen vom die Schnittgut-Abdeckeinrichtung 11 bildenden Korb übergriffen, wie aus den Figuren 1 und 2 ersichtlich ist. Die Schnittgut-Halteeinrichtung 10 enthält wenigstens einen, vorzugsweise zwei parallele, das Sägenblatt 6 bzw. den von diesem ausgeführten Schnitt flankierende Andrückbügel 17, denen jeweils ein aus dem die Abdeckeinrichtung 11 bildenden Korb heraustretender Betätigungsbügel 18 zugeordnet ist. Jedem der Betätigungsbügel 18 ist ein in Figur 3 erkennbarer Durchtrittsschlitz 9 des die Abdeckeinrichtung 11 bildenden Korbs zugeordnet. Am außerhalb des Korbs sich befindenden Ende ist ein hier die parallelen Betätigungsbügel 18 verbindender Griff 20 vorgesehen.The clippings-holding device 10 is in the active, the clippings position substantially overlapped by the Schnittgut-covering device 11 forming basket, as from the FIGS. 1 and 2 is apparent. The clippings holding device 10 includes at least one, preferably two parallel, the saw blade 6 and the executed by this cutting flanking Andrückbügel 17, each of which is assigned from the covering device 11 forming basket emergent actuating bracket 18. Each of the operating bracket 18 is an in FIG. 3 recognizable passage slot 9 of the cover 11 forming basket assigned. At the outside of the basket located at the end of a here the parallel operating handle 18 connecting handle 20 is provided.

Die Schnittgut-Halteeinrichtung 10 ist, wie oben schon erwähnt wurde, zum Auflegen des Schnittguts wie die Schnittgut-Abdeckeinrichtung 11 nach oben abschwenkbar und wird anschließend an das Schnittgut angelegt, so dass dieses an die Schnittgut-Anlageeinrichtung 9 angedrückt wird, wie aus den Figuren 1 und 2 erkennbar ist. Der die Schnittgut-Abdeckeinrichtung 11 bildende Korb wird dabei in jedem Fall so weit abgesenkt, dass er mit seinem unteren Rand auf der Oberfläche des Schnittgut-Aufnahmetischs 5 aufsteht. Die Absenkbewegung der Schnittgut-Halteeinrichtung 10 wird beendet, wenn der bzw. die Andrückbügel 17 am Schnittgut zur Anlage kommt bzw. kommen. Je nachdem ob dünneres Schnittgut 4a oder dickeres Schnittgut 4b vorliegt, wird die Halteeinrichtung 11 daher mehr oder weniger abgesenkt, wie in den Figuren 1 und 2 durch die mit unterbrochenen Linien angedeutete, dem dünneren Schnittgut 4a zugeordnete Position und durch die mit durchgezogenen Linien angedeutete, dem dickeren Schnittgut 4b zugeordnete Position angedeutet ist. Um dies zu ermöglichen, ist die Halteeinrichtung 10 gegenüber der Abdeckeinrichtung 11, die in jedem Fall ganz abgesenkt wird, relativ beweglich, d.h. gegenüber der Abdeckeinrichtung 11 schwenkbar gelagert.The clippings-holding device 10 is, as already mentioned above, for placing the clippings as the Schnittgut-covering device 11 can be pivoted upwards and is then applied to the clippings, so that it is pressed against the Schnittgut-conditioning device 9, as from the FIGS. 1 and 2 is recognizable. In each case, the basket forming the cut material covering device 11 is lowered so far that it rests with its lower edge on the surface of the cut material receiving table 5. The lowering movement of the clippings holding device 10 is terminated when the or the Andrückbügel 17 comes to the clippings or come. Depending on whether thinner clippings 4 a or thicker clippings 4 b is present, the holding device 11 is therefore lowered more or less, as in the FIGS. 1 and 2 is indicated by the indicated with broken lines, the thinner clippings 4a associated position and by the indicated by solid lines, the thicker clippings 4b associated position is indicated. In order to make this possible, the holding device 10 relative to the covering device 11, which is lowered in any case, relatively movable, that is pivotally mounted relative to the cover 11.

Die Halteeinrichtung 10 ist auf dem die Abdeckeinrichtung 11 bildenden Korb schwenkbar gelagert, so dass trotz gegenseitiger Relativbeweglichkeit eine weitgehend gemeinsame Hub- und Senkbewegung möglich ist. Im dargestellten Beispiel ist die Schnittgut-Halteeinrichtung 10 als parallelogrammartige Viergelenkanordnung ausgebildet, wobei jedem Andrückbügel 17 ein hierzu paralleler Lenker 21 zugeordnet ist, der mit dem zugeordneten Andrückbügel 17 durch einen zugeordneten Betätigungsbügel 18 gelenkig verbunden ist. Jeder Andrückbügel 17 und Lenker 21 ist im Bereich seines oberen Endes schwenkbar mit dem die Abdeckeinrichtung 11 bildenden Korb verbunden. Die Schwenklager befinden sich dabei zweckmäßig im Bereich jeweils eines Verstärkungsstegs 13. Die Ausbildung der Andrückeinrichtung 10 als Viergelenkanordnung stellt sicher, dass der an jeweils einen Lenker 21 und einen Andrückbügel 17 angelenkte Betätigungsbügel 18 im Verlauf der durchzuführenden Schwenkbewegungen im Wesentlichen zu sich selbst parallel bleibt, was die Bedienung erleichtert.The holding device 10 is pivotally mounted on the cover 11 forming the basket, so that despite mutual relative mobility a largely common lifting and lowering movement is possible. In the example shown, the clippings holding device 10 is formed as a parallelogram-like four-bar arrangement, each Andrückbügel 17 a this associated with parallel link 21, which is pivotally connected to the associated Andrückbügel 17 by an associated operating bracket 18. Each Andrückbügel 17 and handlebar 21 is pivotally connected in the region of its upper end with the cover 11 forming the basket. The design of the pressing device 10 as a four-bar arrangement ensures that the hinged to each one handlebar 21 and a Andrückbügel 17 actuating bracket 18 in the course of the pivoting movements to be performed substantially parallel to itself, which makes the operation easier.

Der Schnittgut-Halteeinrichtung 10 ist wie der Schnittgut-Abdeckeinrichtung 11 eine Federanordnung 22 zugeordnet, die die Hubbewegung unterstützt. Diese Federanordnung 20 greift einerseits an einem den Korb überragenden Fortsatz 23 eines Lenkers 21 und andererseits an einem von der Oberseite des Korbs der Abdeckeinrichtung 11 schräg nach hinten abstehenden Kragarm 24 an. Der Fortsatz 23 kann direkt an einen Lenker 21 angesetzt oder über eine die beiden Lenker 21 miteinander verbindende, die obere Schwenklagerung bildende Achse fest hiermit verbunden sein.The clippings-holding device 10 is associated with the clippings cover device 11, a spring assembly 22 which supports the lifting movement. This spring assembly 20 engages on the one hand on a projecting beyond the basket extension 23 of a link 21 and on the other hand on an obliquely projecting from the top of the basket of the cover 11 to the rear cantilever 24. The extension 23 can be attached directly to a handlebar 21 or be connected via a the two links 21 interconnecting, the upper pivot bearing forming axis firmly hereby.

Um eine Drehung des in der Regel in Form von Rundlingen 4a, b vorliegenden Schnittguts während eines Schneidvorgangs zu verhindern, können die Schnittgut-Anlageeinrichtung 9 und jeder Andrückbügel 17 der Schnittgut-Halteeinrichtung 10 mit gegenläufigen Zähnen 25, 26 versehen sein, wie die Figuren 1 und 2 anschaulich zeigen. Die anlageseitigen Zähne 25 können dabei, wie aus Figur 3 ersichtlich ist, einfach als den Andrückbügeln 17 gegenüberliegende Zahnleisten ausgebildet sein.To prevent rotation of the generally in the form of round bodies 4a, b present crop during a cutting operation, the Schnittgut-conditioning device 9 and each Andrückbügel 17 of the clippings-holding device 10 may be provided with opposing teeth 25, 26, as the FIGS. 1 and 2 show clearly. The plant-side teeth 25 can, as from FIG. 3 it can be seen, just be formed as the Andrückbügeln 17 opposite racks.

Das Sägenblatt 6 ist gegenüber der Mitte des Schnittgut-Aufnahmetischs 5 zu einer Seite versetzt, so dass sich ein längerer und ein kürzerer Abschnitt der Schnittgut-Anlageeinrichtung 9 ergibt. Der Korb der Schnittgut-Abdeckeinrichtung 11 kann dabei, wie Figur 3 anschaulich zeigt, auf der dem kürzeren Abschnitt der Anlageeinrichtung 9 zugeordneten Seite mit einer stirnseitigen Seitenwand 27 versehen sein, die einen seitlichen Eingriff in den Schnittbereich verhindert und damit den erwünschten Eingriffsschutz vervollkommnet. Die Seitenwand 27 kann zweckmäßig lösbar an der zugeordneten Stirnseite des Korbs anbringbar sein, so dass im Einzelfall auch Schnittgut bearbeitet werden kann, das im Bereich des kürzeren Abschnitts der Schnittgut-Anlageeinrichtung 9 über deren seitliches Ende und die Seitenkante des Schnittgut-Aufnahmetischs 5 hinausragt.The saw blade 6 is offset from the center of the cut-receiving table 5 to one side, so that there is a longer and a shorter section of the clippings-conditioning device 9. The basket of the Schnittgut-covering device 11 may, as FIG. 3 clearly shows, on the shorter section of the bearing device 9 associated page with an end-side side wall 27th be provided which prevents lateral engagement in the cutting area, thus completing the desired engagement protection. The side wall 27 may be suitably detachably attachable to the associated end face of the basket, so that in individual cases and cut material can be edited, which projects beyond the lateral end and the side edge of the Schnittgut-receiving table 5 in the region of the shorter portion of the shred-conditioning device 9.

Bei angebrachter Seitenwand 27 begrenzt diese das mögliche Ablängmaß und kann dabei als Anschlag fungieren. Im dargestellten Beispiel ist, wie aus Figur 3 ersichtlich ist, im Bereich der Schnittgut-Anlageeinrichtung 9 wenigstens eine Abschnittlängenmarkierung 33 vorgesehen. Zweckmäßig können mehrere mit Abstand nebeneinander angeordnete, derartige Markierungen vorgesehen sein, was die Erzielung unterschiedlicher Abschnittlängen erleichtert.When attached side wall 27 this limits the possible Ablängmaß and can act as a stop. In the example shown is how out FIG. 3 it can be seen, at least one section length marking 33 is provided in the region of the clippings investment device 9. Suitably, a plurality of spaced apart juxtaposed, such markings may be provided, which facilitates the achievement of different section lengths.

Zum Auflegen von neuem Schnittgut wird der Schnittgut-Aufnahmetisch 5 in seine hintere Endstellung gebracht. Die Schnittgut-Halteeinrichtung 10 und Schnittgut-Abdeckeinrichtung 11 werden hochgeklappt. Diese Situation liegt der Figur 3 und der Figur 4 zugrunde. In der hinteren Endstellung des Aufnahmetischs 5 ist das Sägenblatt 6 vollständig von der zugeordneten Schutzhaube 8 abgedeckt. Um ein unbeabsichtigtes Austauchen des Sägenblatts 6 aus der Schutzhaube 8 bei geöffneter Abdeckeinrichtung 11 zu verhindern, ist der Aufnahmetisch 5 in der Beladestellung, d.h. in seiner hinteren Endstellung bei geöffneter Abdeckeinrichtung 11 gegen Verfahren in Vorschubrichtung verriegelt. Der Aufnahmetisch 5 ist erst in Vorschubrichtung verschiebbar, so dass das Sägenblatt 6 aus der zugeordneten Schutzhaube 8 herauskommt, wenn die Abdeckeinrichtung 11 geschlossen ist. Dieser ist andererseits in Öffnungsrichtung verriegelt, sobald der Aufnahmetisch 5 seine hintere Endstellung verlässt. Zweckmäßig erfolgen diese Verriegelungen mittels einer im Einzelnen aus den Figuren 4 und 5 sich ergebenden Verriegelungseinrichtung 28.For placing new clippings of the clippings-receiving table 5 is brought into its rear end position. The clippings holder 10 and clippings cover 11 are folded up. This situation is the FIG. 3 and the FIG. 4 based. In the rear end position of the receiving table 5, the saw blade 6 is completely covered by the associated protective cover 8. In order to prevent inadvertent removal of the saw blade 6 from the protective cover 8 when the covering device 11 is open, the receiving table 5 is locked in the loading position, ie in its rear end position when the covering device 11 is open, against movement in the direction of advance. The receiving table 5 is displaceable only in the feed direction, so that the saw blade 6 comes out of the associated protective hood 8 when the cover 11 is closed. This is on the other hand locked in the opening direction as soon as the receiving table 5 leaves its rear end position. Appropriately, these locks are done by means of a detail from the FIGS. 4 and 5 resulting locking device 28th

Die Verriegelungseinrichtung 28 enthält einen auf der der Anlageseite gegenüberliegenden Seite der Schnittgut-Anlageeinrichtung 9 angeordneten, vertikal verschiebbaren Schieber 29. Dieser kann als vertikaler Stab oder vertikale Lasche etc. ausgebildet sein. Der Schieber 29 ist mit seinem oberen Ende an einen schräg nach oben auskragenden Ansatz 30 des Korbs der Abdeckeinrichtung 11 angelenkt, so dass sich beim Schwenken des Korbs eine auf- und abwärts gerichtete Bewegung des Schiebers 29 ergibt. Dem unteren Ende des Schiebers 29 ist ein unterhalb des Schnittgut-Aufnahmetischs 5 angeordneter, stationärer d.h. gehäusefest angeordneter Anschlag 31 zugeordnet. Dieser ist so positioniert, dass der den Aufnahmetisch 5 durchgreifende Schieber 29 in einer abgesenkten Stellung gegen eine Bewegung in Vorschubrichtung des Aufnahmetischs 5 blockiert ist. In dieser der Figur 4 zugrunde liegenden Situation befindet sich der Aufnahmetisch 5 in seiner hinteren Endstellung und ist der Korb der Abdeckeinrichtung 11 hochgeklappt, so dass neues Schnittgut an die Schnittgut-Anlageeinrichtung 9 angelegt werden kann. Sobald der Korb geschlossen wird, wird der Schieber 29 mittels der Auskragung 30 angehoben, wodurch das untere Schieberende außer Eingriff mit dem zugeordneten Anschlag 31 kommt und dementsprechend der Schnittgut-Aufnahmetisch 5 in Vorschubrichtung verschoben werden kann. Diese Situation liegt der Figur 5 zugrunde.The locking device 28 includes a arranged on the opposite side of the plant clippings plant 9, vertically slidable slide 29. This can be designed as a vertical rod or vertical tab, etc. The slider 29 is hinged at its upper end to an obliquely upwardly projecting lug 30 of the basket of the cover 11 so that an upward and downward movement of the slider 29 results during pivoting of the basket. The lower end of the slider 29 is a arranged below the Schnittgut-receiving table 5, stationary, ie fixed to the housing arranged stop 31 assigned. The latter is positioned so that the slide 29 extending through the receiving table 5 is blocked in a lowered position against movement in the feed direction of the receiving table 5. In this the FIG. 4 Underlying situation, the receiving table 5 is in its rear end position and the basket of the cover 11 is folded up so that new clippings can be applied to the clippings investment facility 9. Once the basket is closed, the slider 29 is raised by means of the projection 30, whereby the lower slider end is disengaged from the associated stop 31 and accordingly the cut-receiving table 5 can be moved in the feed direction. This situation is the FIG. 5 based.

Um zu verhindern, dass der Korb der Abdeckeinrichtung 11 während der Vorschubbewegung des Aufnahmetischs 5, d.h. während eines Schneidvorgangs geöffnet werden kann, ist der angehobene Schieber 29 außerhalb der hinteren Endstellung des Schnittgut-Aufnahmetischs 5 auf dem gesamten Vorschubweg des Schnittgut-Aufnahmetischs 5 gegen Absenken blockiert, womit dann gleichzeitig der über die Auskragung 30 an den Schieber 29 angelenkte Korb der Abdeckeinrichtung 11 in seiner abgesenkten Stellung gegen Anheben blockiert ist. Hierzu ist dem Schieber 29 eine unter dem Aufnahmetisch 5 angeordnete, an den Anschlag 31 anschließende, in Vorschubrichtung des Aufnahmetischs 5 sich erstreckende Anlaufschiene 32 zugeordnet, die das untere Ende des angehobenen Schiebers 29 auf dem gesamten Verschiebeweg des Schnittgut-Aufnahmetischs 5 untergreift, so dass eine Absenkung unmöglich ist. Der dem abgesenkten Schieber 29 zugeordnete Anschlag 31 kann als Ausnehmung oder hinteres Ende der Anlaufschiene 32 ausgebildet sein. Im dargestellten Beispiel ist das hintere Ende der Anlaufschiene 32 zur Bildung des Anschlags 31 gabelförmig ausgenommen.In order to prevent that the basket of the cover 11 during the advancing movement of the receiving table 5, ie can be opened during a cutting operation, the raised slider 29 is outside the rear end position of the Schnittgut-receiving table 5 on the entire feed path of the Schnittgut-receiving table 5 against lowering blocked, which then simultaneously blocked over the projection 30 hinged to the slider 29 basket of the cover 11 is blocked in its lowered position against lifting. For this purpose, the slider 29 is arranged under the receiving table 5, adjoining the stop 31, in the feed direction of the receiving table 5 extending stop rail 32 associated with the lower end of the raised slide 29 engages over the entire displacement path of the cut receiving table 5, so that a lowering is impossible. The lowered slide 29 associated stop 31 may be formed as a recess or rear end of the stop rail 32. In the example shown the rear end of the stop rail 32 bifurcated to form the stop 31.

Vorstehend ist ein besonders bevorzugtes Ausführungsbeispiel der Erfindung näher erläutert, ohne dass jedoch hiermit eine Beschränkung verbunden sein soll. So wäre es beispielsweise auch denkbar, mehrere, mit Seitenabstand nebeneinander angeordnete Schneidwerkzeuge vorzusehen. Ebenso wäre es denkbar, anstelle eines kreisförmigen Sägenblatts auch ein oder mehrere mit umlaufenden Ketten versehene Sägeschwerter oder auf- und abbewegte Sägeblätter ect. vorzusehen.Above, a particularly preferred embodiment of the invention is explained in more detail, without, however, that a restriction should be connected thereto. For example, it would also be conceivable to provide a plurality of cutting tools arranged side by side with one another. It would also be conceivable, instead of a circular saw blade and one or more provided with rotating chains Sägeschwerter or ect moved up and down saw blades. provided.

Claims (13)

  1. A saw for cutting firewood comprising at least one cutting tool having the form of a circular saw blade (6) rotatable about a stationary axle or a saw bar provided with a circumferential chain or a saw blade etc , which is movable upwards and downwards, in particular a circular saw for cutting firewood, and further comprising a table for receiving the wood to be cut (5) passed through by the cutting tool and movable relative to the said cutting tool, which is provided with a protection hood (8) associated with the cutting tool and further with a wood contact device (9) flanking the open end of the said protection hood (8), such wood contact device (9) being associated with a wood holding device (10) and a wood cover device (11) which are raisable and lowerable, characterized in that the wood holding device (10) and the wood cover device (11) are movable relative to each other in the holding and/or cover direction, with the wood holding device (10) being swivel mounted on the wood cover device (11) which comprises a cover basket extending over the width of the table for receiving the wood to be cut (5) and being swivel mounted in the region of its front top rim in the direction of feed in the direction of its upper rim of the wall-shaped wood contact device (9) likewise extending over the width of the table for receiving the wood to be cut (5), and with the wood holding device (10) comprising at least one push-on bow (17), overlapped by the cover basket of the wood cover device (11), and being tiltable relative to the latter, which push-on bow (17) is associated with an actuating bow (18) reaching through a slot (19) of the cover basket.
  2. A saw for cutting firewood in accordance with claim 1, characterized in that the wood cover device (11) comprises a cover basket which in cross section has the shape of a quarter circle.
  3. A saw for cutting firewood in accordance with claim 2, characterized in that the cover basket of the wood cover device (11) comprises a handle (14) protruding from its external side and arranged in the region of its rear bottom rim.
  4. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that the wood holding device (10) is designed as a double bow arrangement comprising push-down bows (17) flanking the cutting tool and, associated with the said push-down bows (17), actuating bows (18) connected via a handle (20) on their rear end.
  5. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that each one of the push-down bows (17) mounted on the cover basket of the wood cover device (11) is connected in an articulated manner via an actuating bow with a handlebar (21) likewise mounted on the cover basket.
  6. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that relief spring arrangements (15; 22) are associated with the wood cover device (11) and the wood holding device (10) supporting their respective lifting movements, with the relief spring arrangement (15) acting on the wood cover device (11) being supported on the table side cover hood (8), and the relief spring arrangement (22) acting on the wood holding device (10) being supported on the cover basket of the wood cover device (11).
  7. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that the wood contact device (9) and the push-down bows (17) of the wood holding device (10) are provided with teeth (25, 26) facing each other in counter direction.
  8. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that the wood cover device (11) in the region of at least one end face, preferably in the region of the end face having a smaller distance from the cutting tool, is provided with a lateral wall (27).
  9. A saw for cutting firewood in accordance with claim 8, characterized in that the lateral wall (27) is detachably mountable.
  10. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that in the region of the wood contact device (9) provision is made for at least one length marking (33)
  11. A saw for cutting firewood in accordance with any of the preceding claims, characterized in that provision is made for a locking device (28) which is actuatable by means of the wood cover device (11), such locking device (28) enabling the wood cover device (11) to raise in the rear end position of the table for receiving the wood to be cut (5) while at the same time the latter is locked, and releasing the latter for a moving position only while the wood cover device (11) is closed.
  12. A saw for cutting firewood in accordance with claim 11, characterized in that the locking device (28) comprises at least one vertically movable slide (29) arranged on the side opposite to the contact side of the wood contact device (9) which slide (29), with its upper end region, is linked to an associated projection (30) of the swivellable cover basket of the wood cover device (11), and whose bottom end region passing through the table for receiving the wood to be cut (5) in the rear end position of the table for receiving the wood to be cut (5) acts together with a stationary stop face (31).
  13. A saw for cutting firewood in accordance with claim 11 or 12, characterized in that associated with the slide (29) is a guide rail (32) arranged below the table for receiving the wood to be cut (5), whose rear end region is designed as a stationary stop face (31) associated with the slide (29) and which outside the stop face (31) holds the slide (29) in its top position blocking the wood cover device (11).
EP11003950.0A 2010-05-26 2011-05-13 Saw for cutting firewood Active EP2390070B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010021522.8A DE102010021522B4 (en) 2010-05-26 2010-05-26 Holzkreissaege

Publications (2)

Publication Number Publication Date
EP2390070A1 EP2390070A1 (en) 2011-11-30
EP2390070B1 true EP2390070B1 (en) 2017-07-12

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EP11003950.0A Active EP2390070B1 (en) 2010-05-26 2011-05-13 Saw for cutting firewood

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EP (1) EP2390070B1 (en)
DE (1) DE102010021522B4 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018100886U1 (en) * 2018-01-24 2019-04-25 Güde GmbH & Co. KG Firewood saw with automatic locking safety cover
CN108327097A (en) * 2018-02-26 2018-07-27 李良君 A kind of brick cutter
CN109333657A (en) * 2018-11-15 2019-02-15 江苏金飞达电动工具有限公司 From the bench saw of protection
CN111546437B (en) * 2020-05-19 2021-11-19 泰安鑫杰机械有限公司 Dustproof cutting device of timber apron that house decoration was used
CN112356154B (en) * 2020-11-13 2022-06-17 南京灵雀智能制造有限公司 Folding wood cutting equipment of accomodating

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Publication number Priority date Publication date Assignee Title
CH208793A (en) * 1938-02-01 1940-02-29 Huber Marthaler Lina Protective device on circular saws.
AT183224B (en) * 1953-10-03 1955-09-26 Ludwig Altenburger Protective device for circular saws
DE1868477U (en) * 1963-01-04 1963-03-07 Michael Schafnitzel WOOD HOLDING DEVICE FOR FIREWOOD CIRCULAR SAWS.
DE3035219A1 (en) * 1980-09-18 1982-04-29 Anton 7592 Renchen Ebert Safe timber cutting motor driven circular saw - has workpiece stop positioned remote from blade, acting as holding device

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP2390070A1 (en) 2011-11-30
DE102010021522B4 (en) 2016-05-12
DE102010021522A1 (en) 2011-12-01

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