EP2390071B1 - Tilting circular saw - Google Patents

Tilting circular saw Download PDF

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Publication number
EP2390071B1
EP2390071B1 EP11003951.8A EP11003951A EP2390071B1 EP 2390071 B1 EP2390071 B1 EP 2390071B1 EP 11003951 A EP11003951 A EP 11003951A EP 2390071 B1 EP2390071 B1 EP 2390071B1
Authority
EP
European Patent Office
Prior art keywords
tilting
rocker
cover
circular saw
rack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11003951.8A
Other languages
German (de)
French (fr)
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EP2390071A1 (en
Inventor
Reinhold Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scheppach GmbH
Original Assignee
Scheppach Fabrikation von Holzbearbeitungsmaschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Scheppach Fabrikation von Holzbearbeitungsmaschinen GmbH filed Critical Scheppach Fabrikation von Holzbearbeitungsmaschinen GmbH
Priority to PL11003951T priority Critical patent/PL2390071T3/en
Publication of EP2390071A1 publication Critical patent/EP2390071A1/en
Application granted granted Critical
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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
    • 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
    • B27B5/224—Saw benches with non-feedable circular saw blade the workpieces being fitted on a pivoting support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety 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 tilting circular saw according to the preamble of claim 1.
  • rocker engageable with an inserted for engaging in the receiving channel Thomasgut, from outside the receiving channel is operable, pivotable hold-down device is provided, and that the cover device and hold-down device are decoupled in terms of movement and movable in the hold down or Abdeckraum relative to each other.
  • the cover device and the hold-down device ensure that contact of the operator with the cutting tool is excluded.
  • By decoupling the movement of the cover of the hold-down device and vice versa ensures that the cover can be completely closed regardless of the diameter of the crop in any case, and that the clippings are still reliably held and secured in any case.
  • the measures according to the invention therefore ensure a high level of occupational safety combined with a high level of working comfort.
  • the covering advantageously a bridging the upper access opening of the cover channel, preferably curved upwards, with a transverse to its pivot axis, the hold-down device associated slot and the pivot axis opposite handle provided pivot cover provided with upper, transverse to the pivot axis reinforcing bars is that project beyond the frame-side lid edge and can be stored with the tabs thus formed rocker side.
  • a further expedient measure may be that the hold-down device has at least one hold-down arm which protrudes from a pivot shaft and which has a cover-side slot thorough operating lever is connected.
  • a simple operation of the hold-down is possible with closed pivot cover from the outside.
  • the hold-down and the actuating lever can simply form a T-shaped bracket, the downwardly facing crossbar acts on the pivot shaft and contains the hold-down.
  • a further advantageous measure for increasing the ease of use may be that the cover device and the hold-down device are associated with their respective upwardly directed pivoting movements supporting Efflungsfedern.
  • the pivot cover may be provided with a protective housing of the frame opposite, a penetration slot for the cutting tool associated protective hood which engages in the protective housing pivoted to the frame rocker. This ensures that despite the upper cover of the receiving channel by means of the pivot cover a large depth of cut can be reached and the cutting tool is still covered in any case.
  • the protective housing requires a cutout into which the receiving channel can dip.
  • the protective housing In order to ensure a reliable shielding of the cutting tool in spite of this cutout, in the region of the outer side of the protective housing protruding from the rocker, engaging in the protective housing and a provided in the opposite side of the protective housing, hinged to the rocker and the protective housing over a pin-slot connection hingedly connected cover piece may be provided. As a result, the security is further increased.
  • FIG. 1 The drawings underlying firewood circular saw, such as FIG. 1 can be clearly seen from a preferably mobile, provided with rollers 1 and a drawbar 2, suitably designed in the manner of a truncated pyramid, a cutting tool, inform here a circular saw blade 3 receiving frame 4 and a pivotally mounted on one side of the frame 4 rocker, the an the frame 4 is pivotable on or from this. Due to this structure, saws of the present type are referred to in practice as a tilting circular saw.
  • the saw blade 3 is received on a horizontal, parallel to the axis of the rocker shaft 5, which is driven by an arranged on the frame 4 motor 6.
  • the motor 6 is placed on the flattened top of the frame 4.
  • the saw blade 3 can be received directly on the motor shaft.
  • the frame 4 is flanked by the arranged with its plane transverse to the rocker 5 saw blade 3 on a transversely to the rocker 5 associated side of the frame 4 extending side.
  • the protective housing 7 is designed in the manner of a narrow, rocker-side open box whose motor 6 opposite rear to enable accessibility of the saw blade 3 for a change, etc. is removable or swung.
  • the protective housing 7 In the lower part of the rocker distant narrow side of the protective housing 7 this is expediently provided with a Spanausschö réelle.
  • the lower narrow side of the protective housing 7 is therefore expediently formed sloping towards the ejection opening.
  • the protective housing 7 is designed parallelogram-like, so that there are parallel upper and lower sides.
  • the rocker 5 is practically formed as a frame having two lateral, interconnected by one or more transverse webs bars 8, which in the region of its lower end in a lower region of the associated Housing side are pivotally mounted.
  • the frame distant side of the rocker 5 can be closed by a plate attached to the spars 8. In this way, there is a closed niche into which the saw blade 3 can engage, as in FIG. 4 is indicated.
  • the axis of these bearings 9 extends, as already mentioned, parallel to the axis of the saw blade 3.
  • the bars 8 are provided with the frame 4 projecting brackets 10, which serve to receive a cross-sectionally approximately v-shaped profile section 11 , Which limits at least over the length of the rocker-side frame side extending receiving channel 12 for ablende clippings.
  • Containing the receiving channel 12, formed by a sheet metal profile section 11 is located with a leg of the bars 8 and is surrounded in the region of the other leg of the brackets 10 from below and the frame side, so that there is a high stability.
  • the length of the receiving channel 12 is adapted to the usual length of 1 m as a clipping usually in question in question.
  • the receiving channel 12 protrudes with an end region beyond the plane of the saw blade 3, so that there is also a support of a separated piece of wood.
  • the receiving channel 12 limiting profile section 11 is accordingly associated with a saw blade 3, best of FIG. 2 recognizable penetration slot 13 provided.
  • FIGS. 1 and 2 the cover device 20 and the hold-down device 21 are shown in the swung-up, permitting the insertion of clippings in the receiving channel 12 state.
  • the Figures 3 and 4 show the cover 20 in the closed state and the hold-down device 21 in the inserted, indicated by a Rundling clippings 22 salaried state.
  • the covering device 20 and the hold-down device 21 respectively associated with pivot bearings 23 and 24 are located in the region of the rear, upwardly extending portions 10 a of Consoles 10.
  • the pivot bearings 23, 24 are offset in height from each other, wherein the pivot bearing 24 of the hold-down device 21 slightly lower than those provided in the region of the upper ends of the console sections 10a and thus in the region of the upper edge of the inner side wall of the receiving channel 12 pivot bearing 23rd the cover 20 are positioned.
  • the covering device 20 is formed by a pivoting lid 25 bridging over the upper access opening of the receiving channel 12, suitably arched upward or bent.
  • This can be formed by a perforated plate, which runs transversely to its pivot axis, best of FIG. 2 apparent stiffening webs 26 may be provided. These protrude beyond the frame-side edge of the pivot cover 25 so that tabs 27 projecting from the console surface arise with which the pivot cover 25 can be mounted on the upper ends of the console sections 10a.
  • the hold-down device 21 consists, as best of the Figures 3 and 4 It can be seen from one or more, upside down, T-shaped brackets, the crossbar forms a clippings 22 can be brought to bear hold-down 29, the engagement side is toothed so that caused by the cutting forces rotation of the cuttings 22 is counteracted. A similar toothing is also provided in the region of the mutually inclined side walls of the receiving channel 12.
  • the upwardly projecting from the hold-down arm 29 bail arm forms an actuating lever 30 which is provided at its upper end with a handle 31 located above the pivot cover 25.
  • the hold-down device 21 may, as already mentioned above, have one or more, preferably the cutting plane of the saw blade 3 flanking T-bar. In most cases, such as in the example shown, such a bracket.
  • the pivot cover 25 of the cover 20 and the hold-down device 21 is pivoted upward from the receiving channel 12 and in the FIGS. 1 and 2 underlying, upper end position brought.
  • the pivot cover 25 comes with his frame remote edge at the upper end of the spars 8 and the outer wall of the rocker 5 to the plant, so that the receiving channel 12 is closed without gaps upwards.
  • the hold-down device 21 can only be lowered until the hold-down arm 29 rests on the inserted cut material 22, that is, the lowering movement of the hold-down device 21 is already completed before the lowest possible position is reached without clippings.
  • the respective end position of the hold-down device 21 depends, as in FIG. 3 is indicated by broken lines, from the diameter of the inserted cuttings 22, while the pivot cover 25 is always lowered to rest against the top of the rocker 5, that is brought into its lowest position.
  • the cover 20 and the hold-down device 21 are decoupled from each other in terms of movement, that is, independently movable up and down and relative to each other in Niederhalteraum or covering direction movable, which by the above already mentioned, separate storage of the cover 20 and the hold-down device 21 is achieved.
  • the hold-down device 21 associated Enflastungsfeder 37 engages, such as FIG. 5 shows, on the one hand on an obliquely rearwardly projecting finger 38 of the above-described, provided for forming the associated pivot bearing 24 shaft and on the other hand on a bracket 10 at.
  • the covering device 20 associated Enflastungsfeder 36 engages on the one hand on an obliquely projecting rearward projection 38a of the pivot cover 25 and on the other hand also on a bracket 10 at.
  • the relief springs 36, 37 supporting console 10 is flanked by the two relief springs 36, 37 expedient. To form the support means while a respective bracket 10 passing through pin 39 is provided at the opposite ends of the two relief springs 36, 37 can be mounted.
  • the rocker 5 is pivoted to the frame 4.
  • the protective housing 7 with a example in the Figures 2 and 3 provided from the outside and from the inside cutout 40, in which the receiving channel 12 limiting profile 11 can dip.
  • covering means suitable for this purpose are assigned to the outside and inside.
  • the sawtooth area in the region of the cutout 40 as best seen FIG. 2 can be seen, covered by an attached to the rocker 5 fender 41, which dips into the protective housing 7 with its rocker-distant edge.
  • the fender 41 may consist of several, juxtaposed sections or be formed in one piece.
  • the frame 4 facing side of the protective housing 7 is to cover the tooth portion of the saw blade 3, as from the Figures 3 and 5 clearly shows, also provided by the rocker 5 fender 42 which covers here but only the upper area and on which therefore another cover 43 is pivotally mounted with its upper end, with its lower end via a pin-slot connection to the Protective housing 7 is articulated.
  • a saw blade 3 directed towards pivoting movement of the rocker 5 with the cover 20 open or opening the pivot cover 25 at wholly or partially to the frame 4 approximate rocker 5, to avoid one of the best of the Figures 5 and 6 apparent locking device 44 is provided which excludes incorrect operation of the above-mentioned type and only a proper operation of the tilting circular saw allows.
  • To form the locking device 44 fixedly mounted and rocker side fixedly mounted elements are provided on the frame side.
  • a guide strip 45 which is mounted here on the protective housing 7 and is curved concentrically with respect to the pivot axis of the rocker 5, is provided whose rocker-side end forms a stop 46 facing the rocker 5.
  • a counter-stop 47 assigned to the stop 46 and a sliding block 48 assigned to the guide rail 45 are provided on the rocker side.
  • the counter-stop 47 can be attached as a comb cover 25 mounted comb plate be formed, which is arranged so that it is open with hinged lid 25, as shown FIG. 1 it can be seen, the stop 46 is opposite and in the case of a malfunction of the rocker 5 starts at the stop 46 and with closed pivot cover 25, as shown FIG. 3 it can be seen, can pass the stop 46.
  • the shoe 48 is formed and arranged so that it in the FIG. 3 underlying, frame distant end position of the rocker 5 is out of engagement with the guide rail 45 and outside of this end position on the entire pivoting path of the rocker 5 abuts the guide rail 45, that connected to the shoe 45 pivot cover 25 is locked against lifting, as from FIG. 6 is recognizable.
  • the pivot cover 25 when lifting to the rear and accordingly the slide 48 is pivoted downwards, this is with a suitable support surface on the top of the guide rail 45, so that there is a barrier against lifting the pivot cover 45.
  • the shoe 48 can be easily designed as protruding from the pivot cover 25, the guide rail 45 cross-claw.
  • the comb-shaped counter-stop 47 may be formed as an upper approach of the shoe, so that both elements can be realized in a protruding from the pivot cover 25 upright molding.
  • the guide rail 45 is expediently provided in the region of the inside, that is to say the frame 4 facing the protective housing 7.
  • an attachment on the outside of the protective housing 7 would be possible. It would also be conceivable both inside and outside to provide a link strip with each associated counter-stop 47 and shoe 48.
  • the receiving channel 12 is open at the front.
  • at least one end face preferably the end face closer to the saw blade 3
  • a removable side wall which is fastened captively to the frame or can be pivoted away, preferably by means of a chain.

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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 Wippkreissäge gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a tilting circular saw according to the preamble of claim 1.

Eine Anordnung dieser Art ist aus der EP 1 992 461 A1 bekannt.An arrangement of this kind is from the EP 1 992 461 A1 known.

Hiervon ausgehend ist es die Aufgabe der vorliegenden Erfindung, eine Anordnung eingangs erwähnter Art mit einfachen und kostengünstigen Mitteln so zu verbessern, dass eine hohe Arbeitssicherheit erreicht wird.On this basis, it is the object of the present invention to improve an arrangement 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 Wippe mit einer zum Eingriff mit in den Aufnahmekanal eingelegtem Schnittgut bringbaren, von außerhalb des Aufnahmekanals betätigbaren, schwenkbaren Niederhalteeinrichtung versehen ist, und dass die Abdeckeinrichtung und Niederhalteeinrichtung bewegungsmäßig entkoppelt und in Niederhalte- bzw. Abdeckrichtung relativ zueinander bewegbar sind.This object is achieved in that the rocker engageable with an inserted for engaging in the receiving channel Schnittgut, from outside the receiving channel is operable, pivotable hold-down device is provided, and that the cover device and hold-down device are decoupled in terms of movement and movable in the hold down or Abdeckrichtung relative to each other.

Mit diesen Maßnahmen werden die Nachteile der bekannten Anordnungen vollständig vermieden. Die Abdeckeinrichtung und die Niederhalteeinrichtung gewährleisten, dass ein Kontakt der Bedienungsperson mit dem Schneidwerkzeug ausgeschlossen ist. Durch die Entkopplung der Bewegung der Abdeckeinrichtung von der Niederhalteeinrichtung und umgekehrt ist sichergestellt, dass die Abdeckeinrichtung unabhängig vom Durchmesser des Schnittguts in jedem Fall vollständig geschlossen werden kann und dass das Schnittgut dennoch in jedem Fall zuverlässig gehalten und gesichert wird. Zudem ist sichergestellt, dass infolge der vollständigen Abdeckung des Aufnahmekanals auch keine Fremdkörper in diesen hinein bzw. Späne und Splitter aus diesem herausgeworfen werden können. Die erfindungsgemäßen Maßnahmen gewährleisten daher eine hohe Arbeitssicherheit verbunden mit einem hohen Arbeitskomfort.With these measures, the disadvantages of the known arrangements are completely avoided. The cover device and the hold-down device ensure that contact of the operator with the cutting tool is excluded. By decoupling the movement of the cover of the hold-down device and vice versa ensures that the cover can be completely closed regardless of the diameter of the crop in any case, and that the clippings are still reliably held and secured in any case. In addition, it is ensured that due to the complete coverage of the receiving channel and no foreign bodies in it or chips and splinters can be thrown out of this. The measures according to the invention therefore ensure a high level of occupational safety combined with a high level of working comfort.

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.

So kann die Abdeckeinrichtung vorteilhaft einen die obere Zugangsöffnung des Abdeckkanals überbrückenden, vorzugsweise nach oben gewölbten, mit einem quer zu seiner Schwenkachse verlaufenden, der Niederhalteeinrichtung zugeordneten Schlitz und einem der Schwenkachse gegenüberliegenden Griff versehenen Schwenkdeckel aufweisen, der mit oberen, quer zur Schwenkachse verlaufenden Verstärkungsleisten versehen ist, die den gestellseitigen Deckelrand überragen und mit den so gebildeten Laschen wippenseitig gelagert sein können. Diese Maßnahmen ergeben eine einfache und sehr stabile Ausführung.Thus, the covering advantageously a bridging the upper access opening of the cover channel, preferably curved upwards, with a transverse to its pivot axis, the hold-down device associated slot and the pivot axis opposite handle provided pivot cover provided with upper, transverse to the pivot axis reinforcing bars is that project beyond the frame-side lid edge and can be stored with the tabs thus formed rocker side. These measures result in a simple and very stable design.

Eine weitere zweckmäßige Maßnahme kann darin bestehen, dass die Niederhalteeinrichtung wenigstens einen von einer Schwenkwelle abstehenden Niederhaltearm aufweist, der mit einem den deckelseitigen Schlitz durchgreifenden Betätigungshebel verbunden ist. Hierbei ist eine einfache Betätigung des Niederhaltearms bei geschlossenem Schwenkdeckel von außen möglich. Der Niederhaltearm und der Betätigungshebel können dabei einfach einen T-förmigen Bügel bilden, dessen nach unten weisender Querbalken an der Schwenkwelle angreift und den Niederhaltearm enthält.A further expedient measure may be that the hold-down device has at least one hold-down arm which protrudes from a pivot shaft and which has a cover-side slot thorough operating lever is connected. Here, a simple operation of the hold-down is possible with closed pivot cover from the outside. The hold-down and the actuating lever can simply form a T-shaped bracket, the downwardly facing crossbar acts on the pivot shaft and contains the hold-down.

Eine weitere vorteilhafte Maßnahme zur Erhöhung des Bedienungskomforts kann darin bestehen, dass der Abdeckeinrichtung und der Niederhalteeinrichtung ihre jeweiligen nach oben gerichteten Schwenkbewegungen unterstützende Enflastungsfedern zugeordnet sind.A further advantageous measure for increasing the ease of use may be that the cover device and the hold-down device are associated with their respective upwardly directed pivoting movements supporting Efflungsfedern.

Vorteilhaft kann der Schwenkdeckel mit einer dem Schutzgehäuse des Gestells gegenüberliegenden, einem Durchgriffsschlitz für das Schneidwerkzeug zugeordneten Schutzhaube versehen sein, die bei an das Gestell angeschwenkter Wippe in das Schutzgehäuse eingreift. Hierdurch wird sichergestellt, dass trotz der oberen Abdeckung des Aufnahmekanals mittels des Schwenkdeckels eine große Schnitttiefe erreichbar ist und das Schneidwerkzeug trotzdem in jedem Fall verdeckt ist.Advantageously, the pivot cover may be provided with a protective housing of the frame opposite, a penetration slot for the cutting tool associated protective hood which engages in the protective housing pivoted to the frame rocker. This ensures that despite the upper cover of the receiving channel by means of the pivot cover a large depth of cut can be reached and the cutting tool is still covered in any case.

Um die Wippe weit genug an das Gestell anschwenken zu können, benötigt das Schutzgehäuse einen Ausschnitt, in den der Aufnahmekanal eintauchen kann. Um trotz dieses Ausschnitts eine zuverlässige Abschirmung des Schneidwerkzeugs zu gewährleisten, kann ein im Bereich der Außenseite des Schutzgehäuses von der Wippe abstehendes, in das Schutzgehäuse eingreifendes Schutzblech und ein im Bereich der gegenüberliegenden Seite des Schutzgehäuses vorgesehenes, an die Wippe angelenktes und mit dem Schutzgehäuse über eine Stift-Schlitzverbindung gelenkig verbundenes Abdeckstück vorgesehen sein. Hierdurch wird die Sicherheit weiter erhöht.To be able to swing the rocker far enough to the frame, the protective housing requires a cutout into which the receiving channel can dip. In order to ensure a reliable shielding of the cutting tool in spite of this cutout, in the region of the outer side of the protective housing protruding from the rocker, engaging in the protective housing and a provided in the opposite side of the protective housing, hinged to the rocker and the protective housing over a pin-slot connection hingedly connected cover piece may be provided. As a result, the security is further increased.

Um unfallträchtige Fehlbedienungen auszuschließen ist der Wippe vorteilhaft eine Verriegelungseinrichtung zugeordnet, die in einer vom Gestell abgeschwenkten Stellung der Wippe eine Öffnung der Abdeckeinrichtung bei gleichzeitiger Verriegelung der Wippe ermöglicht und diese nur bei geschlossener Abdeckeinrichtung für eine Schwenkbewegung freigibt und die Abdeckeinrichtung in jeder von der vom Gestell abgeschwenkten Position der Wippe entfernten Position gegen Öffnen blockiert. Hiermit ist zuverlässig ausgeschlossen, dass die Wippe mit offenem Aufnahmekanal in Schneidrichtung bewegbar ist und dass die Abdeckeinrichtung während eines Schneidvorgangs geöffnet werden kann.In order to rule out accident-prone incorrect operation of the rocker is advantageously associated with a locking device which in an orientation pivoted away from the frame position of the rocker an opening of the cover at the same time Locking of the rocker allows and this releases only with the cover closed for a pivoting movement and blocks the cover in each remote from the frame pivoted position of the rocker position against opening. This reliably precludes the fact that the rocker with open receiving channel is movable in the cutting direction and that the cover can be opened during a cutting operation.

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 Wippkrieissäge mit für eine Beschickung geöffnetem Aufnahmekanal,
Figur 2
eine perspektivische Ansicht der erfindungsgemäßen Wippkreissäge von der der Figur 1 zugrundeliegenden Motorseite gegenüberliegenden Seite,
Figur 3
die Anordnung gemäß Figur 1 mit eingelegtem Schnittgut und geschlossenem Aufnahmekanal,
Figur 4
die Anordnung gemäß Figur 3 mit teilweise an das Gestell angeschwenkter Wippe,
Figur 4
eine perspektivische Ansicht der Anordnung gemäß Figur 3 von der wippenfernen Seite her und
Figur 6
eine perspektivische Ansicht der Anordnung gemäß Figur 4 von der Bedienungsseite her.
In the drawing described below:
FIG. 1
a side view of a rocker saw according to the invention with open for a feed receiving channel,
FIG. 2
a perspective view of the tilting circular saw according to the invention of the FIG. 1 underlying engine side opposite side,
FIG. 3
the arrangement according to FIG. 1 with inlaid clippings and closed receiving channel,
FIG. 4
the arrangement according to FIG. 3 with rocker pivoted partly to the frame,
FIG. 4
a perspective view of the arrangement according to FIG. 3 from the side away from the tipper and
FIG. 6
a perspective view of the arrangement according to FIG. 4 from the operating side.

Die den Zeichnungen zugrundeliegende Brennholzkreissäge besteht, wie beispielsweise Figur 1 anschaulich erkennen lässt, aus einem vorzugsweise fahrbaren, mit Rollen 1 und einer Deichsel 2 versehenen, zweckmäßig nach Art eines Pyramidenstumpfes ausgebildeten, ein Schneidwerkzeug, hier inform eines Kreissägenblatts 3 aufnehmenden Gestell 4 und einer an einer Seite des Gestells 4 schwenkbar gelagerten Wippe, die an das Gestell 4 an bzw. von diesem abschwenkbar ist. Aufgrund dieses Aufbaus werden Sägen vorliegender Art in der Praxis als Wippkreissäge bezeichnet.The drawings underlying firewood circular saw, such as FIG. 1 can be clearly seen from a preferably mobile, provided with rollers 1 and a drawbar 2, suitably designed in the manner of a truncated pyramid, a cutting tool, inform here a circular saw blade 3 receiving frame 4 and a pivotally mounted on one side of the frame 4 rocker, the an the frame 4 is pivotable on or from this. Due to this structure, saws of the present type are referred to in practice as a tilting circular saw.

Das Sägenblatt 3 ist auf einer horizontalen, zur Achse der Wippe 5 parallelen Welle aufgenommen, die durch einen auf dem Gestell 4 angeordneten Motor 6 antreibbar ist. Im dargestellten Beispiel ist der Motor 6 auf die abgeflachte Oberseite des Gestells 4 aufgesetzt. Das Sägenblatt 3 kann dabei direkt auf der Motorwelle aufgenommen sein. Das Gestell 4 wird dabei durch das mit seiner Ebene quer zur Wippe 5 angeordnete Sägenblatt 3 auf einer quer zu der der Wippe 5 zugeordneten Seite des Gestells 4 verlaufenden Seite flankiert. An dieser Seite des Gestells 4 ist ein dem Sägenblatt 3 zugeordnetes Schutzgehäuse 7 angebracht, das wippenseitig offen ist. Das Schutzgehäuse 7 ist nach Art eines schmalen, wippenseitig offenen Kastens ausgebildet, dessen dem Motor 6 gegenüberliegende Rückseite zur Ermöglichung einer Zugänglichkeit des Sägenblatts 3 für einen Wechsel etc. abnehmbar bzw. abschwenkbar ist. Im unteren Bereich der wippenfernen Schmalseite des Schutzgehäuses 7 ist dieses zweckmäßig mit einer Spanauswurföffnung versehen. Die untere Schmalseite des Schutzgehäuses 7 ist daher zweckmäßig zur Auswurföffnung hin abfallend ausgebildet. Im dargestellten Beispiel ist das Schutzgehäuse 7 parallelogrammartig gestaltet, so dass sich parallele Ober- und Unterseiten ergeben.The saw blade 3 is received on a horizontal, parallel to the axis of the rocker shaft 5, which is driven by an arranged on the frame 4 motor 6. In the example shown, the motor 6 is placed on the flattened top of the frame 4. The saw blade 3 can be received directly on the motor shaft. The frame 4 is flanked by the arranged with its plane transverse to the rocker 5 saw blade 3 on a transversely to the rocker 5 associated side of the frame 4 extending side. On this side of the frame 4, a saw blade 3 associated protective housing 7 is attached, the rocker side is open. The protective housing 7 is designed in the manner of a narrow, rocker-side open box whose motor 6 opposite rear to enable accessibility of the saw blade 3 for a change, etc. is removable or swung. In the lower part of the rocker distant narrow side of the protective housing 7 this is expediently provided with a Spanauswurföffnung. The lower narrow side of the protective housing 7 is therefore expediently formed sloping towards the ejection opening. In the example shown, the protective housing 7 is designed parallelogram-like, so that there are parallel upper and lower sides.

Die Wippe 5 ist praktisch als Rahmen ausgebildet, der zwei seitliche, durch einen oder mehrere Querstege miteinander verbundene Holme 8 aufweist, die im Bereich ihres unteren Endes in einem unteren Bereich der zugeordneten Gehäuseseite schwenkbar gelagert sind. Die gestellferne Seite der Wippe 5 kann durch ein an den Holmen 8 angebrachtes Blech verschlossen sein. Auf diese Weise ergibt sich eine geschlossene Nische in die das Sägenblatt 3 eingreifen kann, wie in Figur 4 angedeutet ist. Die Achse dieser Lager 9 verläuft, wie oben schon erwähnt, parallel zur Achse des Sägenblatts 3. Oberhalb der Lager 9 sind die Holme 8 mit zum Gestell 4 hin auskragenden Konsolen 10 versehen, die zur Aufnahme eines im Querschnitt etwa v-förmigen Profilabschnitts 11 dienen, der einen zumindest über die Länge der wippenseitigen Gestellseite sich erstreckenden Aufnahmekanals 12 für abzulängendes Schnittgut begrenzt. Der den Aufnahmekanal 12 enthaltende, durch einen Blechformling gebildete Profilabschnitt 11 liegt mit einem Schenkel an den Holmen 8 an und ist im Bereich seines anderen Schenkels von den Konsolen 10 von unten und gestellseitig umgriffen, so dass sich eine hohe Stabilität ergibt. Die Länge des Aufnahmekanals 12 ist an die übliche Länge von als Schnittgut in der Regel in Frage kommendem Sterholz von 1 m angepasst. Der Aufnahmekanal 12 ragt dabei mit einem Endbereich über die Ebene des Sägenblatts 3 hinaus, so dass sich auch eine Abstützung eines abgetrennten Holzstücks ergibt. Der den Aufnahmekanal 12 begrenzende Profilabschnitt 11 ist dementsprechend mit einem dem Sägenblatt 3 zugeordneten, am besten aus Figur 2 erkennbaren Durchgriffsschlitz 13 versehen.The rocker 5 is practically formed as a frame having two lateral, interconnected by one or more transverse webs bars 8, which in the region of its lower end in a lower region of the associated Housing side are pivotally mounted. The frame distant side of the rocker 5 can be closed by a plate attached to the spars 8. In this way, there is a closed niche into which the saw blade 3 can engage, as in FIG. 4 is indicated. The axis of these bearings 9 extends, as already mentioned, parallel to the axis of the saw blade 3. Above the bearing 9, the bars 8 are provided with the frame 4 projecting brackets 10, which serve to receive a cross-sectionally approximately v-shaped profile section 11 , Which limits at least over the length of the rocker-side frame side extending receiving channel 12 for ablängende clippings. Containing the receiving channel 12, formed by a sheet metal profile section 11 is located with a leg of the bars 8 and is surrounded in the region of the other leg of the brackets 10 from below and the frame side, so that there is a high stability. The length of the receiving channel 12 is adapted to the usual length of 1 m as a clipping usually in question in question. The receiving channel 12 protrudes with an end region beyond the plane of the saw blade 3, so that there is also a support of a separated piece of wood. The receiving channel 12 limiting profile section 11 is accordingly associated with a saw blade 3, best of FIG. 2 recognizable penetration slot 13 provided.

Zur Erhöhung der Sicherheit ist die Wippe 5 mit einer der Zugangsseite, d.h. Der Öffnung des oben offenen Aufnahmekanals 12 zugeordneten, schwenkbaren Abdeckeinrichtung 20 und einer zum Halten des in den Aufnahmekanal 12 eingelegten Schnittguts vorgesehenen, schwenkbaren Niederhalteeinrichtung 21 versehen. In den Figuren 1 und 2 sind die Abdeckeinrichtung 20 und die Niederhalteeinrichtung 21 im hochgeschwenkten, das Einlegen von Schnittgut in den Aufnahmekanal 12 erlaubenden Zustand gezeigt. Die Figuren 3 und 4 zeigen die Abdeckeinrichtung 20 im geschlossenen Zustand und die Niederhalteeinrichtung 21 im am eingelegten, durch einen Rundling angedeuteten Schnittgut 22 angestellten Zustand. Die der Abdeckeinrichtung 20 und der Niederhalteeinrichtung 21 jeweils zugeordneten Schwenklager 23 bzw. 24 befinden sich im Bereich der hinteren, nach oben verlaufenden Abschnitte 10a der Konsolen 10. Die Schwenklager 23, 24 sind in der Höhe gegeneinander versetzt, wobei die Schwenklager 24 der Niederhalteeinrichtung 21 etwas tiefer als die im Bereich der oberen Enden der Konsolenabschnitte 10a und damit im Bereich des oberen Rands der inneren Seitenwand des Aufnahmekanals 12 vorgesehenen Schwenklager 23 der Abdeckeinrichtung 20 positioniert sind.To increase the safety of the rocker 5 is provided with one of the access side, ie the opening of the open-top receiving channel 12 associated, pivotable covering device 20 and provided for holding the inserted into the receiving channel 12 cuttings, pivotable hold-down device 21. In the FIGS. 1 and 2 the cover device 20 and the hold-down device 21 are shown in the swung-up, permitting the insertion of clippings in the receiving channel 12 state. The Figures 3 and 4 show the cover 20 in the closed state and the hold-down device 21 in the inserted, indicated by a Rundling clippings 22 salaried state. The covering device 20 and the hold-down device 21 respectively associated with pivot bearings 23 and 24 are located in the region of the rear, upwardly extending portions 10 a of Consoles 10. The pivot bearings 23, 24 are offset in height from each other, wherein the pivot bearing 24 of the hold-down device 21 slightly lower than those provided in the region of the upper ends of the console sections 10a and thus in the region of the upper edge of the inner side wall of the receiving channel 12 pivot bearing 23rd the cover 20 are positioned.

Die Abdeckeinrichtung 20 wird durch einen die obere Zugangsöffnung des Aufnahmekanals 12 überbrückenden, zweckmäßig nach oben gewölbten bzw. abgeknickten Schwenkdeckel 25 gebildet. Dieser kann durch ein Lochblech gebildet werden, das mit quer zu seiner Schwenkachse verlaufenden, am besten aus Figur 2 ersichtlichen Versteifungsstegen 26 versehen sein kann. Diese stehen über den gestellseitigen Rand des Schwenkdeckels 25 vor, so dass sich konsolenseitig vorspringende Laschen 27 ergeben, mit denen der Schwenkdeckel 25 an den oberen Enden der Konsolenabschnitte 10a gelagert werden kann. Zur Bedienung des Schwenkdeckels 25 kann dieser mit einem über seinen achsfernen Rand vorspringenden Griff 28 versehen sein.The covering device 20 is formed by a pivoting lid 25 bridging over the upper access opening of the receiving channel 12, suitably arched upward or bent. This can be formed by a perforated plate, which runs transversely to its pivot axis, best of FIG. 2 apparent stiffening webs 26 may be provided. These protrude beyond the frame-side edge of the pivot cover 25 so that tabs 27 projecting from the console surface arise with which the pivot cover 25 can be mounted on the upper ends of the console sections 10a. To operate the swivel cover 25, it may be provided with a handle 28 protruding beyond its off-axis edge.

Die Niederhalteeinrichtung 21 besteht, wie am besten aus den Figuren 3 und 4 erkennbar ist, aus einem oder mehreren, auf den Kopf gestellten, T-förmigen Bügeln, deren Querbalken einen am Schnittgut 22 zur Anlage bringbaren Niederhaltearm 29 bildet, dessen Eingriffsseite so gezahnt ist, dass einer durch die Schnittkräfte verursachten Drehung des Schnittguts 22 entgegengewirkt wird. Eine ähnliche Zahnung ist auch im Bereich der gegeneinander geneigten Seitenwände des Aufnahmekanals 12 vorgesehen. Der vom Niederhaltearm 29 nach oben abstehende Bügelarm bildet einen Betätigungshebel 30, der an seinem oberen Ende mit einem oberhalb des Schwenkdeckels 25 sich befindenden Griff 31 versehen ist. Die Niederhalteeinrichtung 21 kann, wie vorstehend schon erwähnt wurde, einen oder mehrere, vorzugsweise die Schnittebene des Sägenblatts 3 flankierende T-Bügel aufweisen. In den meisten Fällen genügt, wie im dargestellten Beispiel, ein derartiger Bügel. Dieser ist im Bereich des gestellseitigen Endes des Niederhaltebügels 29 mittels des zugeordneten Schwenklagers 24 gelagert. Zur Bildung des Schwenklagers 24 kann eine durch einen mit seinen Enden in miteinander fluchtende Bohrungen von zwei einander benachbarten Konsolenabschnitten 10a eingreifenden Stab gebildete Welle vorgesehen sein, die fest, z.B. durch Verschweißen, mit dem zugewandten Ende des Niederhaltebügels 29 verbunden ist. Der Niederhaltebügel 29 befindet sich innerhalb des Aufnahmekanals 12, das heißt unterhalb des Schwenkdeckels 25. Der vom Niederhaltearm 29 abstehende Betätigungsarm 30 durchgreift daher den Schwenkdeckel 25, der hierzu mit einem rechtwinklig zu seiner Achse verlaufenden, am besten aus den Figuren 5 und 6 ersichtlichen Durchgriffsschlitz 35 versehen ist.The hold-down device 21 consists, as best of the Figures 3 and 4 It can be seen from one or more, upside down, T-shaped brackets, the crossbar forms a clippings 22 can be brought to bear hold-down 29, the engagement side is toothed so that caused by the cutting forces rotation of the cuttings 22 is counteracted. A similar toothing is also provided in the region of the mutually inclined side walls of the receiving channel 12. The upwardly projecting from the hold-down arm 29 bail arm forms an actuating lever 30 which is provided at its upper end with a handle 31 located above the pivot cover 25. The hold-down device 21 may, as already mentioned above, have one or more, preferably the cutting plane of the saw blade 3 flanking T-bar. In most cases, such as in the example shown, such a bracket. This is mounted in the region of the frame-side end of the hold-down bracket 29 by means of the associated pivot bearing 24. To form the pivot bearing 24, a through a shaft formed with its ends in mutually aligned bores of two adjacent console sections 10a engaging rod may be provided which is fixed, for example by welding, with the facing end of the hold-down bracket 29 is connected. The hold-down bar 29 is located within the receiving channel 12, that is, below the pivot cover 25. The projecting from the hold-down arm 29 actuating arm 30 therefore passes through the pivot cover 25 extending for this purpose with a perpendicular to its axis, best of the Figures 5 and 6 apparent penetration slot 35 is provided.

Zum Einlegen von Schnittgut in den Aufnahmekanal 12, das heißt zur Bewerkstelligung einer oberen Zugänglichkeit des Aufnahmkanals 12, werden, wie die Figuren 1 und 2 zeigen, der Schwenkdeckel 25 der Abdeckeinrichtung 20 und die Niederhalteeinrichtung 21 nach oben vom Aufnahmekanal 12 abgeschwenkt und in die den Figuren 1 und 2 zugrundeliegende, obere Endstellung gebracht. Nach erfolgter Beschickung des Aufnahmekanals 12 mit Schnittgut werden der Schwenkdeckel 25 und die Niederhalteeinrichtung 21 in die den Figuren 3 und 4 zugrundeliegende Arbeitsstellung abgesenkt, wobei der Schwenkdeckel 25 mit seinem gestellfernen Rand am oberen Ende der Holme 8 bzw. der äußeren Wand der Wippe 5 zur Anlage kommt, so dass der Aufnahmekanal 12 spaltfrei nach oben verschlossen ist. Die Niederhalteeinrichtung 21 kann demgegenüber nur soweit abgesenkt werden, bis der Niederhaltearm 29 auf dem eingelegten Schnittgut 22 anliegt, das heißt die Absenkbewegung der Niederhalteeinrichtung 21 wird bereits beendet, bevor deren ohne Schnittgut mögliche, tiefste Position erreicht ist. Die jeweilige Endstellung der Niederhalteeinrichtung 21 hängt dabei, wie in Figur 3 mit unterbrochenen Linien angedeutet ist, vom Durchmesser des eingelegten Schnittguts 22 ab, während der Schwenkdeckel 25 stets bis zur Anlage an der Oberseite der Wippe 5 abgesenkt, d. h. in seine tiefste Position gebracht wird. Um dies zu ermöglichen, sind die Abdeckeinrichtung 20 und die Niederhalteeinrichtung 21 bewegungsmäßig voneinander entkoppelt, das heißt unabhängig voneinander auf- und abschwenkbar und relativ zueinander in Niederhalterichtung bzw. Abdeckrichtung bewegbar, was durch die oben bereits erwähnte, getrennte Lagerung der Abdeckeinrichtung 20 und der Niederhalteeinrichtung 21 erreicht wird.To insert clippings in the receiving channel 12, that is, to achieve an upper accessibility of the receiving channel 12, as the FIGS. 1 and 2 show, the pivot cover 25 of the cover 20 and the hold-down device 21 is pivoted upward from the receiving channel 12 and in the FIGS. 1 and 2 underlying, upper end position brought. After loading of the receiving channel 12 with clippings of the pivot cover 25 and the hold-down device 21 in the Figures 3 and 4 lowered underlying working position, the pivot cover 25 comes with his frame remote edge at the upper end of the spars 8 and the outer wall of the rocker 5 to the plant, so that the receiving channel 12 is closed without gaps upwards. In contrast, the hold-down device 21 can only be lowered until the hold-down arm 29 rests on the inserted cut material 22, that is, the lowering movement of the hold-down device 21 is already completed before the lowest possible position is reached without clippings. The respective end position of the hold-down device 21 depends, as in FIG. 3 is indicated by broken lines, from the diameter of the inserted cuttings 22, while the pivot cover 25 is always lowered to rest against the top of the rocker 5, that is brought into its lowest position. To make this possible, the cover 20 and the hold-down device 21 are decoupled from each other in terms of movement, that is, independently movable up and down and relative to each other in Niederhalterichtung or covering direction movable, which by the above already mentioned, separate storage of the cover 20 and the hold-down device 21 is achieved.

Zur Erleichterung der Bedienung sind der Abdeckeinrichtung 20 und der Niederhalteeinrichtung 21 ihre nach oben gerichteten Schwenkbewegungen unterstützende Entlastungsfedern 36 bzw. 37 zugeordnet. Die der Niederhalteeinrichtung 21 zugeordnete Enflastungsfeder 37 greift dabei, wie z.B. Figur 5 zeigt, einerseits an einem schräg nach hinten abstehenden Finger 38 der oben beschriebenen, zur Bildung der zugeordneten Schwenklagerung 24 vorgesehenen Welle und andererseits an einer Konsole 10 an. Die der Abdeckeinrichtung 20 zugeordnete Enflastungsfeder 36 greift einerseits an einer schräg nach hinten abstehenden Auskragung 38a des Schwenkdeckels 25 und andererseits ebenfalls an einer Konsole 10 an. Die die Entlastungsfedern 36, 37 abstützende Konsole 10 wird von den beiden Entlastungsfedern 36, 37 zweckmäßig flankiert. Zur Bildung der Abstützeinrichtung ist dabei einfach ein die betreffende Konsole 10 durchsetzender Stift 39 vorgesehen, an dessen einander gegenüberliegenden Enden die beiden Entlastungsfedern 36, 37 eingehängt werden können.To facilitate the operation of the cover 20 and the hold-down device 21 associated with their upward pivotal movements supporting relief springs 36 and 37, respectively. The hold-down device 21 associated Enflastungsfeder 37 engages, such as FIG. 5 shows, on the one hand on an obliquely rearwardly projecting finger 38 of the above-described, provided for forming the associated pivot bearing 24 shaft and on the other hand on a bracket 10 at. The covering device 20 associated Enflastungsfeder 36 engages on the one hand on an obliquely projecting rearward projection 38a of the pivot cover 25 and on the other hand also on a bracket 10 at. The relief springs 36, 37 supporting console 10 is flanked by the two relief springs 36, 37 expedient. To form the support means while a respective bracket 10 passing through pin 39 is provided at the opposite ends of the two relief springs 36, 37 can be mounted.

Zur Durchführung eines Sägeschnitts wird die Wippe 5 an das Gestell 4 angeschwenkt. Um dies zu ermöglichen, ist das Schutzgehäuse 7 mit einem beispielsweise in den Figuren 2 und 3 von außen und von innen gezeigten Ausschnitt 40 versehen, in den das den Aufnahmekanal 12 begrenzende Profil 11 eintauchen kann. Zur Verhinderung einer Zugänglichkeit des umfangsseitigen Zahnbereichs des Sägenblatts 3 im Bereich des Ausschnitts 40 sind diesem außen und innen geeignete Abdeckeinrichtungen zugeordnet. Im Bereich der Außenseite, das hießt der vom Gestell 4 abgewandten Seite des Schutzgehäuses 7 wird der Sägezahnbereich im Bereich des Ausschnitts 40, wie am besten aus Figur 2 ersichtlich ist, durch ein an der Wippe 5 befestigtes Schutzblech 41 abgedeckt, das mit seinem wippenfernen Rand in das Schutzgehäuse 7 eintaucht. Das Schutzblech 41 kann dabei aus mehreren, aneinander angesetzten Abschnitten bestehen oder einteilig ausgebildet sein. Im Bereich der Innenseite, das heißt der dem Gestell 4 zugewandten Seite des Schutzgehäuses 7 ist zur Abdeckung des Zahnbereichs des Sägenblatts 3, wie aus den Figuren 3 und 5 anschaulich hervorgeht, ebenfalls ein von der Wippe 5 vorspringendes Schutzblech 42 vorgesehen, das hier jedoch lediglich den oberen Bereich abdeckt und an dem deshalb ein weiteres Abdeckstück 43 mit seinem oberen Ende schwenkbar gelagert ist, das mit seinem unteren Ende über eine Stift-Schlitzverbindung an das Schutzgehäuse 7 angelenkt ist.To perform a saw cut the rocker 5 is pivoted to the frame 4. To make this possible, the protective housing 7 with a example in the Figures 2 and 3 provided from the outside and from the inside cutout 40, in which the receiving channel 12 limiting profile 11 can dip. In order to prevent accessibility of the peripheral tooth region of the saw blade 3 in the region of the cutout 40, covering means suitable for this purpose are assigned to the outside and inside. In the area of the outside, that is, the side of the protective housing 7 facing away from the frame 4, the sawtooth area in the region of the cutout 40, as best seen FIG. 2 can be seen, covered by an attached to the rocker 5 fender 41, which dips into the protective housing 7 with its rocker-distant edge. The fender 41 may consist of several, juxtaposed sections or be formed in one piece. In the area of the inside, that is, the frame 4 facing side of the protective housing 7 is to cover the tooth portion of the saw blade 3, as from the Figures 3 and 5 clearly shows, also provided by the rocker 5 fender 42 which covers here but only the upper area and on which therefore another cover 43 is pivotally mounted with its upper end, with its lower end via a pin-slot connection to the Protective housing 7 is articulated.

Gegen Ende der Schneidbewegung der Wippe 5 könnte es unter Umständen über die wippenseitige Öffnung des Schutzgehäuses 5 zu einem Fingerkontakt mit dem Sägenblatt 3 kommen. Um dies auszuschließen ist der Schwenkdeckel 25, wie die Figur 6 erkennen lässt, mit einer einem dem Sägenblatt 3 zugeordneten Durchgriffsschlitz zugeordneten Schutzhaube 49 versehen, die bei Annäherung der Wippe 5 an das Gestell 4 in das Schutzgehäuse 7 eintaucht und so eine Zugänglichkeit des Sägezahnbereichs des Sägenblatts 7 verhindert.Towards the end of the cutting movement of the rocker 5, it could possibly come about the rocker-side opening of the protective housing 5 to a finger contact with the saw blade 3. To exclude this is the pivot cover 25, like the FIG. 6 can recognize, with a the saw blade 3 associated penetration slot associated protective hood 49 which dips into the protective housing 7 on approach of the rocker 5 to the frame 4 and thus prevents accessibility of the sawtooth portion of the saw blade 7.

Um unfallträchtige Fehlbedienungen, zum Beispiel eine zum Sägenblatt 3 hin gerichtete Anschwenkbewegung der Wippe 5 bei geöffneter Abdeckeinrichtung 20 oder ein Öffnen des Schwenkdeckels 25 bei ganz oder teilweise an das Gestell 4 angenäherter Wippe 5, zu vermeiden, ist eine am besten aus den Figuren 5 und 6 ersichtliche Verriegelungseinrichtung 44 vorgesehen, welche Fehlbedienungen oben genannter Art ausschließt und nur eine ordnungsgemäße Bedienung der erfindungsgemäßen Wippkreissäge zulässt. Zur Bildung der Verriegelungseinrichtung 44 sind gestellseitig fix angebrachte und wippenseitig fix angebrachte Elemente vorgesehen. Gestellseitig ist eine hier am Schutzgehäuse 7 angebrachte, konzentrisch zur Schwenkachse der Wippe 5 gebogene Kulissenleiste 45 vorgesehen, deren wippenseitiges Ende einen der Wippe 5 zugewandten Anschlag 46 bildet. Wippenseitig sind ein dem Anschlag 46 zugeordneter Gegenanschlag 47 und ein der Kulissenleiste 45 zugeordneter Gleitschuh 48 vorgesehen.To accident-prone incorrect operations, for example, a saw blade 3 directed towards pivoting movement of the rocker 5 with the cover 20 open or opening the pivot cover 25 at wholly or partially to the frame 4 approximate rocker 5, to avoid one of the best of the Figures 5 and 6 apparent locking device 44 is provided which excludes incorrect operation of the above-mentioned type and only a proper operation of the tilting circular saw allows. To form the locking device 44 fixedly mounted and rocker side fixedly mounted elements are provided on the frame side. On the frame side, a guide strip 45, which is mounted here on the protective housing 7 and is curved concentrically with respect to the pivot axis of the rocker 5, is provided whose rocker-side end forms a stop 46 facing the rocker 5. On the rocker side, a counter-stop 47 assigned to the stop 46 and a sliding block 48 assigned to the guide rail 45 are provided.

Der Gegenanschlag 47 kann als am Schwenkdeckel 25 angebrachtes Kammblech ausgebildet sein, das so angeordnet ist, dass es bei offenem Schwenkdeckel 25, wie aus Figur 1 ersichtlich ist, dem Anschlag 46 gegenüberliegt und im Falle einer Fehlbedienung der Wippe 5 am Anschlag 46 anläuft und bei geschlossenem Schwenkdeckel 25, wie aus Figur 3 ersichtlich ist, am Anschlag 46 vorbeilaufen kann. Der Gleitschuh 48 ist so ausgebildet und angeordnet, dass er in der der Figur 3 zugrundeliegenden, gestellfernen Endstellung der Wippe 5 außer Eingriff mit der Kulissenleiste 45 ist und außerhalb dieser Endstellung auf dem ganzen Schwenkweg der Wippe 5 so an der Kulissenleiste 45 anliegt, dass der mit dem Gleitschuh 45 verbundene Schwenkdeckel 25 gegen Anheben gesperrt ist, wie aus Figur 6 erkennbar ist. Da der Schwenkdeckel 25 beim Anheben nach hinten und dementsprechend der Gleitschuh 48 nach unten geschwenkt wird, liegt dieser mit einer geeigneten Stützfläche auf der Oberseite der Kulissenleiste 45 auf, so dass sich eine Sperre gegen Heben des Schwenkdeckels 45 ergibt. Der Gleitschuh 48 kann dabei einfach als vom Schwenkdeckel 25 abstehende, die Kulissenleiste 45 übergreifende Klaue ausgebildet sein. Zweckmäßig kann der kammförmige Gegenanschlag 47 als oberer Ansatz des Gleitschuhs ausgebildet sein, so dass beide Elemente in einem vom Schwenkdeckel 25 nach oben abstehenden Formteil verwirklicht werden können.The counter-stop 47 can be attached as a comb cover 25 mounted comb plate be formed, which is arranged so that it is open with hinged lid 25, as shown FIG. 1 it can be seen, the stop 46 is opposite and in the case of a malfunction of the rocker 5 starts at the stop 46 and with closed pivot cover 25, as shown FIG. 3 it can be seen, can pass the stop 46. The shoe 48 is formed and arranged so that it in the FIG. 3 underlying, frame distant end position of the rocker 5 is out of engagement with the guide rail 45 and outside of this end position on the entire pivoting path of the rocker 5 abuts the guide rail 45, that connected to the shoe 45 pivot cover 25 is locked against lifting, as from FIG. 6 is recognizable. Since the pivot cover 25 when lifting to the rear and accordingly the slide 48 is pivoted downwards, this is with a suitable support surface on the top of the guide rail 45, so that there is a barrier against lifting the pivot cover 45. The shoe 48 can be easily designed as protruding from the pivot cover 25, the guide rail 45 cross-claw. Suitably, the comb-shaped counter-stop 47 may be formed as an upper approach of the shoe, so that both elements can be realized in a protruding from the pivot cover 25 upright molding.

Im dargestellten Beispiel ist die Kulissenleiste 45 zweckmäßig im Bereich der Innenseite, das heißt der dem Gestell 4 zugewandten Seite des Schutzgehäuses 7 vorgesehen. Selbstverständlich wäre jedoch auch eine Anbringung auf der Außenseite des Schutzgehäuses 7 möglich. Ebenso wäre es denkbar sowohl innen als auch außen eine Kulissenleiste mit jeweils zugeordnetem Gegenanschlag 47 und Gleitschuh 48 vorzusehen.In the example shown, the guide rail 45 is expediently provided in the region of the inside, that is to say the frame 4 facing the protective housing 7. Of course, however, an attachment on the outside of the protective housing 7 would be possible. It would also be conceivable both inside and outside to provide a link strip with each associated counter-stop 47 and shoe 48.

Im dargestellten Beispiel ist der Aufnahmekanal 12 stirnseitig offen. Es wäre aber auch denkbar, wenigstens eine Stirnseite, vorzugsweise die näher beim Sägenblatt 3 sich befindende Stirnseite, zur weiteren Erhöhung des Eingriffsschutzes mit einer abnehmbaren, vorzugsweise etwa mittels einer Kette unverlierbar gestellseitig befestigten oder wegschwenkbar angeordneten Seitenwand zu versehen.In the example shown, the receiving channel 12 is open at the front. However, it would also be conceivable to provide at least one end face, preferably the end face closer to the saw blade 3, to further increase the engagement protection with a removable side wall which is fastened captively to the frame or can be pivoted away, preferably by means of a chain.

Vorstehend ist zwar ein besonders bevorzugtes Ausführungsbeispiel der Erfindung näher erläutert, ohne dass jedoch hiermit eine Beschränkung verbunden sein soll.Although a particularly preferred embodiment of the invention is explained in more detail above, without, however, a restriction should be connected thereto.

Claims (14)

  1. A tilting circular saw, in particular for cutting to length of fire wood, comprising at least one stationary cutting tool preferably in the form of a saw blade (3) rotatable around a horizontal axis which is arranged on a rack (4) and provided with a protective housing (7) associated with the cutting tool, and further comprising a rocker (5) mounted on a rack (4), which is tiltably mounted around an axis parallel to the axis of the cutting tool, such rocker being provided with a receiving channel (12) accessible from the top for receiving cutting material (22), and with a tiltable cover device (20) covering the top access side of the receiving channel (12), characterised in that the rocker (5) is provided with a tiltable hold down device (21) which is engageable with cutting material placed in the receiving channel (12) and actuatable from the outside of the receiving channel (12), and further that the cover device (20) and the hold down device (21) are uncoupled from each other as regards their movement and are moveable relative towards each other in holding down and/or covering direction.
  2. A tilting circular saw in accordance with Claim 1, characterised in that the rocker (5) comprises a frame with two lateral beams (8) which in the region of their bottom ends are mounted on the rack (4) and above thereof are provided with rack side brackets (10) protruding thereof for receiving a profiled section (11) having an approximate V shaped cross section limiting the receiving channel (12) and comprising a reach through slot (13) for the cutting tool, and for receiving the tilting axes (23, 24) of the cover device (20) and hold down device (21).
  3. A tilting circular saw in accordance with any of the preceding Claims, characterised in that the tilting axis (23) associated with the cover device (20) is arranged at a higher point than the tilting axis (24) associated with the hold down device (21).
  4. A tilting circular saw in accordance with any of the preceding Claims, characterised in that the cover device (20) comprises a tilting cover (25) bridging the upper access opening of the receiving channel (12) and being preferably vaulted towards the top, extending transverse to its tilting axis and associated with the hold down device (21), provided with a grip (28) arranged opposite the tilting axis, such tilting cover (25) comprising enforcing ribs (26) extending transverse to the tilting axis and protruding above the rack side
    cover rim and together with the tongues (27) thus formed being mounted on the upper bracket sections (10a).
  5. A tilting circular saw in accordance with any of the preceding Claims, characterised in that the hold down device (21) comprises at least one preferably toothed hold down arm (29) projecting from a rod forming a tilting shaft from which hold down arm (29) extends an actuating lever (30) reaching through the cover side reach through slot (35).
  6. A tilting circular saw in accordance with Claim 5, characterised in that the hold down arm (29) and the actuating lever (30) form a T-shaped bracket whose cross beam forms the hold down arm (29) which with its rack side end is attached to the associated tilting shaft.
  7. A tilting circular saw in accordance with any of the preceding Claims, characterised in that relief springs (36, 37) are associated with the cover device (20) and the hold down device (21) serving to support their upward tilting movements, such relief springs (36, 37) being arranged on opposite sides of a bracket (10) and supported thereon with one end each, and with the other end acting on a finger (38) of the tilting shaft of the hold down device (21) and/or on a cantilever arm (38a) of the tilting cover (25).
  8. A tilting circular saw in accordance with any of the preceding Claims, characterised in that the tilting cover (25) of the cover device (21) is provided with a protection hood (49) arranged opposite the protective housing (7) of the rack (4) and associated with a reach through slot for the cutting tool, such protection hood (49) engaging the protective housing (7) when the rocker (5) approaches the rack (4).
  9. A tilting circular saw in accordance with any of the preceding Claims, characterised in that the protective housing (7) is provided with a rocker side open cut out (40) which is engaged by the profile section (11) forming the receiving channel (12) when the rocker (5) approaches the rack (4), and further that in the region of the cut out (40) provision is made for cover elements on the outer and inner side of the protective housing (7) preventing access to the cutting tool at least within its toothed area.
  10. A tilting circular saw in accordance with any of the preceding Claims, characterised in that the rocker (5) is associated with a lock device (44) which in a position where the rocker (5) is tilted away from the rack (4) enables an opening of the cover device (20) while at the same time locking the rocker (5) against movement in cutting direction, and releases the rocker (5) for tilt movement in cutting direction only when the cover device (20) is closed and blocks the cover device (20) against opening in any position where the rocker (5) is tilted away from the rack.
  11. A tilting circular saw in accordance with Claim 10, characterised in that the lock device (44) comprises a rack side fixed stop (46) and a rack side fixed slide rail (45) joining the stop (46) and extending concentrically to the tilting axis of the rocker (5), and further that the tilting cover (25) of the cover device (20) is provided with a counter stop (47), associated with the stop (46), and a sliding shoe (48) associated with the slide rail (45), with the counter stop (47) being designed and arranged in such a manner that it can be brought into engagement with the stop (46) by a movement of the rocker (5) in cutting direction when the tilting cover device (25) is tilted upwards in an end position away from the rack, and is moveable past the stop (46) when the tilting cover (25) is closed, with the sliding shoe (48) being designed and arranged such that it is only disengaged from the slide rail (45) in the end position of the rocker (5) away from the rack, and is in contact with the slide rail (45) when the rocker (5) is away from the end position away from the rocker (5) to block the tilting cover (25) in closed position.
  12. A tilting circular saw in accordance with Claim 11, characterised in that the rocker side end of the slide rail (45) is designed as a stop (46) associated with the cover side counter stop (47).
  13. A tilting circular saw in accordance with Claim 11 or 12, characterised in that the sliding shoe (48) is designed as a claw bridging the slide rail (45).
  14. A tilting circular saw in accordance with any of the Claims 11 - 13, characterised in that the counter stop (47) and the slide shoe (48) are formed integral with a common element.
EP11003951.8A 2010-05-26 2011-05-13 Tilting circular saw Active EP2390071B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11003951T PL2390071T3 (en) 2010-05-26 2011-05-13 Tilting circular saw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010021523.6A DE102010021523B4 (en) 2010-05-26 2010-05-26 Rocking circular saw

Publications (2)

Publication Number Publication Date
EP2390071A1 EP2390071A1 (en) 2011-11-30
EP2390071B1 true EP2390071B1 (en) 2014-09-03

Family

ID=44247918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11003951.8A Active EP2390071B1 (en) 2010-05-26 2011-05-13 Tilting circular saw

Country Status (4)

Country Link
EP (1) EP2390071B1 (en)
DE (1) DE102010021523B4 (en)
DK (1) DK2390071T3 (en)
PL (1) PL2390071T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3020587B1 (en) 2014-04-30 2018-01-05 Amr CIRCULAR SAW COMPRISING A SWIVELING BRIDGE FOR TRUNCING WOOD BUCHES
DE202018100886U1 (en) * 2018-01-24 2019-04-25 Güde GmbH & Co. KG Firewood saw with automatic locking safety cover
EP3623125B1 (en) * 2018-09-17 2021-02-17 Ricca Andrea & C. S.n.c. Trunk sawing machine
AT16565U1 (en) * 2018-12-28 2020-01-15 Lettner Josef Wippkreissäge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE458714C (en) 1928-04-17 Ernst Zesch Circular saw
GB207821A (en) * 1922-12-02 1924-04-03 Marie Charles Leon Gaston Fleischel
DE8207619U1 (en) 1981-09-19 1983-03-03 Horndasch, Hermann, 8831 Bergen SAW BLADE PROTECTION WITH SAFETY LOCK FOR FIREWOOD CUTTING SAWS
FR2540030A1 (en) * 1982-09-24 1984-08-03 Bazin Robert Circular saw with tilting trestle
DE202006010777U1 (en) 2006-07-11 2006-09-28 Scheppach Fabrikation Von Holzbearbeitungsmaschinen Gmbh Firewood circular saw has frame on which is drivable circular saw mounted on shaft and forward feed component for wood via accommodation channel
AT505378B1 (en) 2007-05-15 2010-05-15 Posch Gmbh WIPPSÄGEVORRICHTUNG
DE202010003287U1 (en) 2010-03-05 2010-07-01 Stabilo Landtechnik Gmbh Rocker saw with two saw blades

Also Published As

Publication number Publication date
PL2390071T3 (en) 2015-03-31
DE102010021523A1 (en) 2011-12-01
DE102010021523B4 (en) 2020-07-30
DK2390071T3 (en) 2014-11-17
EP2390071A1 (en) 2011-11-30

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