EP1024936B1 - Separating device with cutting chain for processing sandwich panels - Google Patents

Separating device with cutting chain for processing sandwich panels Download PDF

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Publication number
EP1024936B1
EP1024936B1 EP99944437A EP99944437A EP1024936B1 EP 1024936 B1 EP1024936 B1 EP 1024936B1 EP 99944437 A EP99944437 A EP 99944437A EP 99944437 A EP99944437 A EP 99944437A EP 1024936 B1 EP1024936 B1 EP 1024936B1
Authority
EP
European Patent Office
Prior art keywords
cutting
chain
links
movement
severing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99944437A
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German (de)
French (fr)
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EP1024936A1 (en
Inventor
Andreas Tinner
Matthias Accola
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Trumpf SE and Co KG
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Trumpf SE and Co KG
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Publication date
Application filed by Trumpf SE and Co KG filed Critical Trumpf SE and Co KG
Publication of EP1024936A1 publication Critical patent/EP1024936A1/en
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/082—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws consisting of chain saws
    • 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
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y10T83/207—By suction means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/242—With means to clean work or tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/707—By endless band or chain knife
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]
    • Y10T83/917—Having diverse cutting elements

Definitions

  • the invention relates to a separating device for processing Sandwich panels with a motorized and relative movable in the cutting direction to the sandwich panel to be processed Cutting tool, which by means of a guide device in a movement plane running transverse to the plane of the sandwich panel when in use has guided cutting elements.
  • Sandwich panels are multi-layer workpieces with inconsistent mechanical strength of the individual workpiece layers. They usually consist of a foam core as well as this on both sides adjacent top layers in the form of thin Metal sheets. Sandwich panels typically have one Thickness of 40 to 200 millimeters, the thickness of the metal sheets, mostly sheet steel, is about 1 millimeter.
  • the Cutting tool of the known device comprises several in Cutting direction arranged one behind the other and in this direction straight cutting elements in the form of cutting knives.
  • Cutting knives leading in the cutting direction run obliquely to the plate level and V-shaped against each other inclined.
  • a lagging behind the inclined cutting knives Cutting knife is in the cutting direction and perpendicular to aligned with the plate level.
  • the leading Cutting knife is a relatively high mechanical A firm covering layer of the sandwich panel Cut out strips of material and thereby the core of the sandwich panel cut free. Then the relatively soft The core of the sandwich panel is perpendicular to the plane of the panel cutting knife.
  • the known separation device allows one Processing of sandwich panels only starting from the free Plate edge.
  • DE-C-237 687 discloses a non-generic sawing device of trees on which a link saw is used as a cutting tool becomes.
  • the links of the link saw each have one Plurality of teeth, the cutting edges along an imaginary, outward curved line are arranged. On the trajectory the cutting edges in the area of the deflection of the known Link saw is not included in the publication.
  • this object is achieved in that in the case a separating device of the type mentioned as a cutting tool a cutting chain with cutting elements in the form of Chain links and a chain guide as a guide device is provided, the one behind the other in their direction of movement lying chain links relative to each other at right angles to their Swiveling axes and plane of movement partly straight through the chain guide in the plane of movement, are partly guided under an arcuate deflection and each several lying one behind the other in their direction of movement
  • the separation device able to choose sandwich panels from their free Margins from or based on any points in the Machining plate surface separately. It depends on the requirements the making of a continuous or not continuous cut possible. With that area the cutting chain, in which the chain links are deflected in an arc can be inserted into the sandwich panel to be processed become. The cutting chain is located with the area straight guide of the chain links in engagement, see above this results in the separation slot created in this Flat cutting front that limits the cutting direction. such flat cut fronts require where there are two separating slots meet, i.e. in corners of cutouts the sandwich plate in question, a straight course of the Vertex line of the cutout corner.
  • the cutting teeth ensures that by means of the separating device the different materials of a sandwich panel can be cut without snagging, under who would suffer the quality of the cutting result.
  • the achievement of a high quality cutting result serves the feature of the invention, according to which the vertical At least projections of the cutting edges into the plane of movement partly along a radially outward curved line are arranged.
  • the cutting chain has three adjacent rows of chain links, the chain links of the two outer rows forming outer links and the chain links of the intermediate row forming central links, and wherein the adjacent outer links are aligned with one another and the central links are staggered in the direction of movement of the chain links against the outer links and with them
  • a machine guide is provided by means of which is a basic body provided with the cutting chain Separating device for processing the relevant sandwich panel, especially when piercing the sandwich plate, relatively guided to the latter is movable.
  • the machine guide comprises a supportable on the sandwich panel to be processed Edition on which the base body of the separating device is guided movably relative to the sandwich plate.
  • Another embodiment of the invention is characterized in that that the base body of the separating device by means of Machine guidance against the effect of a restoring force from a The rest position can be moved or swiveled into a working position is. The moves under the action of the restoring force Base body of the cutting device and with it the cutting chain automatically in a position in which the cutting chain is disengaged from the sandwich panel in question.
  • the invention provided that the base body of the separating device in the working position with different positions, if necessary with different swivel positions, the cutting chain or the chain guide opposite the relevant sandwich panel can be locked, preferably locked. Once set, Appropriate relative position of the cutting chain or chain guide and sandwich plate is left without in this way Keep the device operator's efforts.
  • a support plate provided a slot for the relative to the Sandwich plate moving cutting chain and chain guide having.
  • the present invention also a cutting chain for such Separating device to the object.
  • the inventive one Cutting chain chain links as described in claim 19 are.
  • Figure 1 includes a separator 1 for processing a sandwich plate 2 a base body 3 with a guide rail 4 for an endless cutting chain 5.
  • the cutting chain 5 along a deflected arcuate path, on the long sides of the guide rail 4, the cutting chain 5 is guided in a straight line.
  • the cutting chain 5 is driven by an electric motor 6 with two Speed switching stages.
  • the base body 3 of the separating device 1 On its opposite the electric motor 6 lying side is the base body 3 of the separating device 1 provided with a housing 7 broken open in FIG. 1, which the cutting chain 5 on the drive side to form a Intermediate space 8 between the cutting chain 5 and housing 7 encloses.
  • a suction hose 9 opens into the intermediate space 8, the one on a connecting piece 10 of the housing 7 on the latter attached and with its other end to a suction operated Fan is connected.
  • a machine guide 11 of the separating device 1 essentially consists from a support plate 12 and a swivel bearing 13, by means of which the base body 3 of the separating device 1 around a parallel to the plate plane of the sandwich plate 2 Axis 14 pivotally connected to the support plate 12 is.
  • a double arrow 15 illustrates the direction of the relative pivoting movement of base body 3 and support plate 12.
  • a slot 16 in the support plate 12 allows the base body 3 of the separating device 1 and with this the cutting chain 5 between the working position according to FIG. 1 and a rest position, in which the cutting chain 5 is out of engagement with the sandwich plate 2 is to swing back and forth.
  • the operator of the Separating device 1 handles 17, 18 on the base body 3 Available.
  • a latching device 19 is used for this purpose. It comprises a plurality of locking openings on the base body 3 of the separating device 1 and an axially displaceable against spring force lockable locking pin 20, which on one with the Platen 12 connected bearing block 21 of the pivot bearing 13 is held displaceably in its axial direction.
  • the Locking openings are located on the viewer of Figure 1 facing away from the base body 3 and are in the direction of Pivotal movement of the base body 3 arranged one behind the other.
  • the operator of the separating device 1 the lockable locking pin 20 in one of the locking openings.
  • the separator was 1 by the operator in the cutting direction, namely in the direction of a Arrow 22, sliding on the sandwich plate 2 and in this way a separation slot in the sandwich panel 2 has been created inside the surface of the sandwich panel 2 takes its exit.
  • the cutting chain 5 in the by an arrow 23 illustrated direction of movement circulated.
  • the cutting chain 5 had the different ones Layers of the sandwich plate 2 severed.
  • the one there Formed cutting dust was in the space 8 between the Cutting chain 5 and the housing 7 sucked in and from there the suction hose 9 has been removed.
  • the platen 12 served to protect the operator from the rotating cutting chain 5th
  • FIG. 2 Another possibility for processing the sandwich panel 2 with the separating device 1 is shown in Figure 2.
  • the separating device 1 with the support plate 12 with the guide rail pointing downwards perpendicular to the sandwich panel 2 4 for the cutting chain 5 on the sandwich plate 2 put on and then proceeding from the free edge of the Sandwich plate 2, inter alia, from a cut surface 24 limited separation slot has been created. Since the Cutting chain 5 with its straight on the guide rail 4 guided area was in engagement with the sandwich panel 2, was found to limit the cutting slot in the cutting direction Front surface is a flat surface.
  • the separator was turned around 90 ° around a perpendicular to the plate plane of the sandwich plate 2 extending axis rotated and with at rest Cutting chain 5 between the inner ends of the previously created Separation slots attached. Then the cutting chain cut 5 with corresponding pivoting of the base body 3 the separating device 1 into the sandwich plate 2. As soon as the Guide rail 4 perpendicular to the plane of the sandwich panel 2 was aligned, the separator 1 went out of the created groove parallel to the free edge the sandwich plate 2 shifted and thereby one to the two initially created separating slots running vertically Cutting slot cut free. A cut surface 25 formed one of the boundary surfaces running in the cutting direction of the last created separation slot. Even the front surface this separation slot was straightforward.
  • the cutting chain 5 comprises three side by side Rows of chain links 27, 28, 29 Chain links 27, 29 are structurally identical Outer links, the chain links 28 middle links of the cutting chain 5. Align adjacent outer links 27, 29 with each other, the center links 28 are in the direction of movement 23 of the cutting chain 5 and thus of the chain links 27, 28, 29 offset against the outer links 27, 29. Each center link 28 overlaps with two in a row in the direction of movement 23 lying outer links 27, 29 of the two outer chain link rows.
  • the connection between the chain links 27, 28, 29 is produced by means of connecting bolts 30. How emerges in particular from Figure 5, penetrates each connecting bolt 30 two adjacent outer links 27, 29 and the middle member 28 between them.
  • the connecting bolts 30 form the pivot axes about which the chain links lying one behind the other in their direction of movement 23 27, 28, 29 are pivotable relative to one another.
  • Cutting teeth 34 in the form of saw teeth are on the chain links 27, 28, 29 in the radial direction and are with Cutting edges 35 provided in the transverse direction of the planes of movement the chain links 27, 28, 29 run and thereby each across the entire width of the chain links 27, 28, 29 extend.
  • the cutting edges 35 of the central links 28 are in contact the cutting chain 5 opposite the cutting edges 35 of the outer links 27, 29 in the radial direction by about 0.7 mm.
  • FIG. 4 Also shown in FIG. 4 are guide lugs 40 of the central links 28, by means of which the cutting chain 5 in a guide groove 41 of the guide rail 4 (Fig. 5) in the direction of movement 23 is performed.
  • the outer links 27, 29 are supported with straight lines Base areas on the guide groove 41 adjacent guide surfaces the guide rail 4.
  • a sprocket can also be used.
  • the overall width of the cutting chain is reduced 5 with increasing distance from the cutting edges 35 of the outer links 27, 29 and the middle members 28.
  • the sandwich plate 2 on both sides of the cutting chain 5 each a clearance angle ⁇ .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Shearing Machines (AREA)

Abstract

A cutting device for tooling sandwich plates has as its cutting tool a cutting chain (5) with cutting elements in the form of chain links (27, 28, 29) and a chain guide as the guide mechanism, wherein the chain links (27, 28, 29), lying one behind the other in their direction of movement (23), can swivel relative to one another on a swivel axis running transverse to their plane of movement and are moved by means of the chain guide in the plane of movement sometimes in a straight line, sometimes in a curve. The chain links (27, 28, 29) also have several cutting teeth (34) lying one behind the other in their direction of movement (23), which project radially on the cutting chain (5) and have cutting edges (335), which run transverse to the plane of movement of the chain links (27, 28, 29), wherein the perpendicular projections of the cutting edges (35) are arranged in the plane of movement at least partially along a line curved radially to the outside. The cutting chain (5) of the cutting device has the type of chain links (27, 28, 29) described above.

Description

Die Erfindung betrifft eine Trennvorrichtung zum Bearbeiten von Sandwichplatten mit einem motorisch angetriebenen und relativ zu der zu bearbeitenden Sandwichplatte in Schnittrichtung bewegbaren Schneidwerkzeug, welches mittels einer Führungseinrichtung in einer im Verwendungszustand quer zu der Sandwichplattenebene verlaufenden Bewegungsebene geführte Schneidelemente aufweist.The invention relates to a separating device for processing Sandwich panels with a motorized and relative movable in the cutting direction to the sandwich panel to be processed Cutting tool, which by means of a guide device in a movement plane running transverse to the plane of the sandwich panel when in use has guided cutting elements.

Bei Sandwichplatten handelt es sich um mehrlagige Werkstücke mit uneinheitlicher mechanischer Festigkeit der einzelnen Werkstücklagen. Sie bestehen in der Regel aus einem Schaumstoffkern sowie diesem beidseits benachbarten Decklagen in Form von dünnen Metallblechen. Sandwichplatten besitzen typischerweise eine Dicke von 40 bis 200 Millimetern, die Dicke der Metallbleche, zumeist Stahlbleche, beträgt ca. 1 Millimeter.Sandwich panels are multi-layer workpieces with inconsistent mechanical strength of the individual workpiece layers. They usually consist of a foam core as well as this on both sides adjacent top layers in the form of thin Metal sheets. Sandwich panels typically have one Thickness of 40 to 200 millimeters, the thickness of the metal sheets, mostly sheet steel, is about 1 millimeter.

Eine gattungsgemäße Vorrichtung zum Bearbeiten von Sandwichplatten ist in der Druckschrift US-A-4,984,615 beschrieben. Das Schneidwerkzeug der vorbekannten Vorrichtung umfaßt mehrere in Schnittrichtung hintereinander angeordnete und in dieser Richtung geradlinig geführte Schneidelemente in Form von Schneidmessern. In Schnittrichtung vorauseilende Schneidmesser verlaufen dabei schräg zu der Plattenebene und V-förmig gegeneinander geneigt. Ein den gegeneinander geneigten Schneidmessern nacheilendes Schneidmesser ist in Schnittrichtung und senkrecht zu der Plattenebene ausgerichtet. Mittels der vorauseilenden Schneidmesser wird aus der eine verhältnismäßig hohe mechanische Festigkeit aufweisenden Deckschicht der Sandwichplatte ein Materialstreifen ausgeschnitten und dadurch der Kern der Sandwichplatte freigeschnitten. Anschließend wird der relativ weiche Kern der Sandwichplatte mittels des senkrecht zu der Plattenebene verlaufenden Schneidmessers durchtrennt.A generic device for processing sandwich panels is described in US-A-4,984,615. The Cutting tool of the known device comprises several in Cutting direction arranged one behind the other and in this direction straight cutting elements in the form of cutting knives. Cutting knives leading in the cutting direction run obliquely to the plate level and V-shaped against each other inclined. A lagging behind the inclined cutting knives Cutting knife is in the cutting direction and perpendicular to aligned with the plate level. By means of the leading Cutting knife is a relatively high mechanical A firm covering layer of the sandwich panel Cut out strips of material and thereby the core of the sandwich panel cut free. Then the relatively soft The core of the sandwich panel is perpendicular to the plane of the panel cutting knife.

Nachteiligerweise erlaubt die bekannte Trennvorrichtung eine Bearbeitung von Sandwichplatten nur ausgehend von dem freien Plattenrand. Disadvantageously, the known separation device allows one Processing of sandwich panels only starting from the free Plate edge.

DE-C-237 687 offenbart eine gattungsfremde Vorrichtung zum Absägen von Bäumen, an der als Schneidwerkzeug eine Gliedersäge verwendet wird. Die Glieder der Gliedersäge weisen jeweils eine Mehrzahl von Zähnen auf, deren Schneidkanten entlang einer gedachten, nach außen gekrümmten Linie angeordnet sind. Auf die Bewegungsbahn der Schneidkanten im Bereich der Umlenkung der vorbekannten Gliedersäge wird in der Druckschrift nicht eingegangen.DE-C-237 687 discloses a non-generic sawing device of trees on which a link saw is used as a cutting tool becomes. The links of the link saw each have one Plurality of teeth, the cutting edges along an imaginary, outward curved line are arranged. On the trajectory the cutting edges in the area of the deflection of the known Link saw is not included in the publication.

Eine Erweiterung der Möglichkeiten zur trennenden Bearbeitung von Sandwichplatten bei zumindest gleichbleibender Qualität der erstellten Schnittflächen hat sich die vorliegende Erfindung ausgehend von dem gattungsbildenden Stand der Technik zum Ziel gesetzt.An extension of the possibilities for separating processing of sandwich panels with at least the same quality of created cut surfaces, the present invention starting from the generic state of the art to the goal set.

Erfindungsgemäß gelöst wird diese Aufgabe dadurch, daß im Falle einer Trennvorrichtung der eingangs genannten Art als Schneidwerkzeug eine Schneidkette mit Schneidelementen in Form von Kettengliedern und als Führungseinrichtung eine Kettenführung vorgesehen ist, wobei die in ihrer Bewegungsrichtung hintereinander liegenden Kettenglieder relativ zueinander um quer zu ihrer Bewegungsebene verlaufende Schwenkachsen schwenkbar und mittels der Kettenführung in der Bewegungsebene teils geradlinig, teils unter bogenförmiger Umlenkung geführt sind und jeweils mehrere in ihrer Bewegungsrichtung hintereinander liegende Schneidzähne aufweisen, welche an der Schneidkette in radialer Richtung vorstehen und mit Schneidkanten versehen sind, die in Querrichtung der Bewegungsebene der Kettenglieder verlaufen, wobei die senkrechten Projektionen der Schneidkanten in die Bewegungsebene wenigstens teilweise entlang einer radial nach außen gekrümmten Bogenlinie angeordnet sind, deren Krümmung derart gewählt ist, dass die auf der Bogenlinie angeordneten Schneidkanten im Bereich der bogenförmigen Umlenkung der Kettenglieder ein und dieselbe Bewegungsbahn beschreiben. Aufgrund der beschriebenen Merkmale ist die erfindungsgemäße Trennvorrichtung in der Lage, Sandwichplatten wahlweise von deren freien Rändern aus oder ausgehend von.beliebigen Punkten in der Plattenfläche trennend zu bearbeiten. Dabei ist je nach Erfordernissen die Herstellung eines durchgehenden oder eines nicht durchgehenden Trennschnittes möglich. Mit demjenigen Bereich der Schneidkette, in welchem die Kettenglieder bogenförmig umgelenkt werden, kann in die zu bearbeitende Sandwichplatte eingestochen werden. Befindet sich die Schneidkette mit dem Bereich geradliniger Führung der Kettenglieder im Eingriff, so ergibt sich an dem erstellten Trennschlitz eine diesen in Schnittrichtung begrenzende ebenflächige Schnittfront. Derartige ebenflächige Schnittfronten bedingen dort, wo zwei Trennschlitze aufeinandertreffen, also in Ecken von Ausschnitten an der betreffenden Sandwichplatte, einen geradlinigen Verlauf der Scheitellinie der Ausschnittecke. Die erfindungsgemäße Ausbildung der Schneidzähne stellt sicher, daß mittels der Trennvorrichtung die unterschiedlichen Materialien einer Sandwichplatte geschnitten werden können, ohne daß es zu Verhakungen kommt, unter denen die Qualität des Schneidergebnisses leiden würde. Ebenfalls der Erzielung eines qualitativ hochwertigen Schneidergebnisses dient das erfindungsgemäße Merkmal, wonach die senkrechten Projektionen der Schneidkanten in die Bewegungsebene wenigstens teilweise entlang einer radial nach außen gekrümmten Bogenlinie angeordnet sind. Durch entsprechende Wahl der Krümmung der genannten Bogenlinie kann nämlich dafür gesorgt werden, daß alle Schneidkanten sämtlicher Kettenglieder im Bereich ihrer bogenförmigen Umlenkung auf ein und derselben Bewegungsbahn geführt werden. According to the invention, this object is achieved in that in the case a separating device of the type mentioned as a cutting tool a cutting chain with cutting elements in the form of Chain links and a chain guide as a guide device is provided, the one behind the other in their direction of movement lying chain links relative to each other at right angles to their Swiveling axes and plane of movement partly straight through the chain guide in the plane of movement, are partly guided under an arcuate deflection and each several lying one behind the other in their direction of movement Have cutting teeth, which on the cutting chain in radial Project in the direction and have cutting edges that run in the transverse direction of the plane of movement of the chain links, where the vertical projections of the cutting edges into the plane of movement at least partially along one radially outward curved arc line are arranged, the curvature of such is chosen that arranged on the curved line Cutting edges in the area of the arcuate deflection of the chain links describe the same trajectory. by virtue of of the features described is the separation device according to the invention able to choose sandwich panels from their free Margins from or based on any points in the Machining plate surface separately. It depends on the requirements the making of a continuous or not continuous cut possible. With that area the cutting chain, in which the chain links are deflected in an arc can be inserted into the sandwich panel to be processed become. The cutting chain is located with the area straight guide of the chain links in engagement, see above this results in the separation slot created in this Flat cutting front that limits the cutting direction. such flat cut fronts require where there are two separating slots meet, i.e. in corners of cutouts the sandwich plate in question, a straight course of the Vertex line of the cutout corner. The training according to the invention the cutting teeth ensures that by means of the separating device the different materials of a sandwich panel can be cut without snagging, under who would suffer the quality of the cutting result. Likewise the achievement of a high quality cutting result serves the feature of the invention, according to which the vertical At least projections of the cutting edges into the plane of movement partly along a radially outward curved line are arranged. By appropriate choice of the curvature of the above Arch line can namely ensure that all Cutting edges of all chain links in the area of their arcuate Redirection can be performed on the same trajectory.

Dabei stellt sich ein gutes Schneidergebnis erfahrungsgemäß dann ein, wenn - wie dies in bevorzugter Ausgestaltung der Erfindung vorgesehen ist - der Krümmungsradius der Bogenlinie, entlang derer die senkrechten Projektionen der Schneidkanten an den Kettengliedern in die Bewegungsebene angeordnet sind, das 0,8 bis 2,5-fache des kleinsten Krümmungsradius' der Bewegungsbahn beträgt, welche die senkrechten Projektionen der Schneidkanten in die Bewegungsebene bei der bogenförmigen Umlenkung der Kettenglieder beschreiben.Experience has shown that the cutting result is good then when - as in a preferred embodiment of the invention is provided - the radius of curvature of the arc line, along which the vertical projections of the cutting edges the chain links are arranged in the plane of movement, the 0.8 to 2.5 times the smallest radius of curvature of the trajectory which is the vertical projections of the cutting edges in the plane of movement in the arcuate deflection describe the chain links.

Neben den vorstehend bereits beschriebenen Vorkehrungen ist an erfindungsgemäßen Trennvorrichtungen zur Gewährleistung eines guten Schneidergebnisses eine Mehrzahl von Maßnahmen getroffen, die einander ergänzend oder alternativ realisiert sein können. In diesem Sinne ist in Weiterbildung der Erfindung vorgesehen, daß
die Schneidkette drei nebeneinanderliegende Reihen von Kettengliedern aufweist, wobei die Kettenglieder der beiden außenliegenden Reihen Außenglieder und die Kettenglieder der dazwischen liegenden Reihe Mittenglieder bilden und wobei die nebeneinanderliegenden Außenglieder miteinander fluchten und die Mittenglieder in Bewegungsrichtung der Kettenglieder gegen die Außenglieder versetzt angeordnet sind und mit in ihrer Bewegungsrichtung hintereinander liegenden Außengliedern überlappen und/oder daß
die Schneidkanten zumindest der nebeneinanderliegenden Außenglieder miteinander fluchten und/oder daß
die außenliegenden Flächen der Ketten- bzw. der Außenglieder eben sind und/oder daß
wenigstens eine der außenliegenden Flächen der Ketten- bzw. der Außenglieder unter Bildung eines Freiwinkels gegenüber der jeweils zugeordneten Schnittfläche an der Sandwichplatte verläuft und/oder daß
die Kettenglieder jeweils wenigstens fünf Schneidzähne aufweisen und/oder daß
die Schneidkanten wenigstens eines Teiles der Mittenglieder an der Schneidkette in radialer Richtung gegenüber den Schneidkanten der Außenglieder vorstehen und/oder daß
die Abstände der Schneidkanten einander benachbarter Schneidzähne an einem Kettenglied variieren.In addition to the precautions already described above, a number of measures have been taken on separating devices according to the invention to ensure a good cutting result, which measures can be implemented in addition to one another or alternatively. In this sense, a further development of the invention provides that
the cutting chain has three adjacent rows of chain links, the chain links of the two outer rows forming outer links and the chain links of the intermediate row forming central links, and wherein the adjacent outer links are aligned with one another and the central links are staggered in the direction of movement of the chain links against the outer links and with them Direction of movement overlapping outer links and / or that
the cutting edges of at least the adjacent outer members are aligned and / or that
the outer surfaces of the chain or outer links are flat and / or that
at least one of the outer surfaces of the chain or outer links extends to form a clearance angle with respect to the respectively assigned cut surface on the sandwich plate and / or that
the chain links each have at least five cutting teeth and / or that
the cutting edges of at least a part of the center links on the cutting chain project in the radial direction with respect to the cutting edges of the outer links and / or that
the distances between the cutting edges of adjacent cutting teeth on a chain link vary.

An mehrreihigen Schneidketten der vorstehend beschriebenen Art kann der Zwischenraum, der zwischen den einander in Bewegungsrichtung benachbarten Schneidzähnen zweier in der genannten Richtung aufeinanderfolgender Außenglieder notwendigerweise verbleibt, mittels der auf Höhe des genannten Zwischenraums angeordneten Schneidzähne des mit den betreffenden Außengliedern überlappenden Mittengliedes der Schneidkette geschlossen werden. In Bewegungsrichtung der Kettenglieder gesehen ergibt sich infolgedessen eine dichte Aufeinanderfolge von Schneidzähnen bzw. Schneidkanten. Einer exakten, beispielsweise von unerwünschten Erschütterungen freien Führung an den Schnittflächen der zu bearbeitenden Sandwichplatte in Schnittrichtung dient die ebene Ausbildung der außenliegenden Flächen der Ketten- bzw. der Außenglieder. Durch den sich erfindungsgemäß einstellenden Freiwinkel zwischen den außenliegenden Flächen der Ketten- bzw. der Außenglieder der Schneidkette sowie der den genannten Flächen gegenüberliegenden Schnittfläche an der Sandwichplatte wird ein Festklemmen der Schneidkette an der Sandwichplatte verhindert. Die vorstehend beschriebene Variation der Abstände der Schneidkanten einander benachbarter Schneidzähne an einem Kettenglied bewirkt einen ruhigen, verschleißarmen Lauf der Schneidkette und erlaubt hohe Schnitt- bzw. Bearbeitungsgeschwindigkeiten bei hervorragender Qualität der erstellten Schnittflächen.On multi-row cutting chains of the type described above can be the space between each other in the direction of movement adjacent cutting teeth two in the above Direction of successive outer links necessarily remains, by means of arranged at the level of the space mentioned Cutting teeth with the relevant outer links overlapping center link of the cutting chain are closed. Seen in the direction of movement of the chain links consequently a dense succession of cutting teeth or cutting edges. An exact one, for example of unwanted ones Vibration-free guidance on the cut surfaces the sandwich panel to be processed serves in the cutting direction the flat design of the outer surfaces of the chain or the outer links. By adjusting itself according to the invention Clearance angle between the outer surfaces of the chain or the outer links of the cutting chain and those mentioned Areas opposite the cut surface on the sandwich panel becomes a clamping of the cutting chain on the sandwich plate prevented. The variation described above the distances between the cutting edges of adjacent cutting teeth on a chain link causes a quiet, low-wear Run of the cutting chain and allows high cutting and processing speeds with excellent quality of the created Sectional areas.

Im Falle von erfindungsgemäßen Trennvorrichtungen mit mehrreihigen Schneidketten sind erfindungsgemäß die nebeneinanderliegenden Außen- und Mittenglieder der Einfachheit halber über Verbindungsbolzen miteinander verbunden, deren Achsen die Schwenkachsen bilden, um welche die in ihrer Bewegungsrichtung hintereinander liegenden Kettenglieder relativ zueinander schwenkbar sind. Dabei sind die genannten Verbindungsbolzen bevorzugtermaßen in ihren den Mittengliedern zugeordneten axialen Abschnitten jeweils zu einem Bund radial erweitert.In the case of separation devices according to the invention with multi-row Cutting chains are according to the invention the side by side Outer and central links for the sake of simplicity Connecting bolts connected together, the axes of which Form swivel axes around which the in their direction of movement successive chain links relative to each other are pivotable. The connecting bolts mentioned are preferred in their axial associated with the center members Sections each radially expanded into a bundle.

Im Interesse des Umwelt- bzw. Arbeitsschutzes ist es erforderlich, den bei der Bearbeitung von Sandwichplatten gebildeten Schneidstaub abzusaugen. Zu diesem Zweck ist im Falle einer bevorzugten Bauart der erfindungsgemäßen Trennvorrichtung die Schneidkette antriebsseitig wenigstens teilweise von einem Gehäuse umschlossen, wobei zwischen der Schneidkette und der Gehäuseinnenwand ein mit einer Absaugeinrichtung verbindbarer Zwischenraum gebildet ist.In the interest of environmental and occupational safety, it is necessary those formed when processing sandwich panels Vacuum cutting dust. For this purpose, in the case of a preferred Design of the separation device according to the invention Cutting chain at least partially on the drive side of a housing enclosed, being between the cutting chain and the housing inner wall a connectable with a suction device Gap is formed.

Zur Gewährleistung eines hochwertigen Bearbeitungsergebnisses ist die Schneidkette der Trennvorrichtung relativ zu der zu bearbeitenden Sandwichplatte exakt zu bewegen. Zu diesem Zweck ist erfindungsgemäß eine Maschinenführung vorgesehen, mittels welcher ein mit der Schneidkette versehener Grundkörper der Trennvorrichtung zur Bearbeitung der betreffenden Sandwichplatte, insbesondere beim Einstechen in die Sandwichplatte, relativ zu letzterer geführt bewegbar ist. Beim Einstechen in die Sandwichplatte wird dabei beispielsweise ein unerwünschtes Verkippen der Schneidkette bzw. der Kettenführung verhindert. To ensure a high-quality processing result is the cutting chain of the cutting device relative to the one to be machined To move the sandwich panel exactly. To this end According to the invention, a machine guide is provided by means of which is a basic body provided with the cutting chain Separating device for processing the relevant sandwich panel, especially when piercing the sandwich plate, relatively guided to the latter is movable. When piercing the sandwich plate for example, an undesired tilting the cutting chain or the chain guide prevented.

In bevorzugter Weiterbildung der Erfindung umfaßt die Maschinenführung eine an der zu bearbeitenden Sandwichplatte abstützbare Auflage, an welcher der Grundkörper der Trennvorrichtung relativ zu der Sandwichplatte geführt bewegbar gelagert ist.In a preferred development of the invention, the machine guide comprises a supportable on the sandwich panel to be processed Edition on which the base body of the separating device is guided movably relative to the sandwich plate.

Durch eine einfache Kinematik der Relativbewegung des Grundkörpers der Trennvorrichtung gegenüber der Sandwichplatte zeichnet sich eine Variante der erfindungsgemäßen Trennvorrichtung aus, im Falle derer der Grundkörper der Trennvorrichtung an der Auflage um eine parallel zu der Plattenebene verlaufende Achse schwenkbar gelagert ist.Through simple kinematics of the relative movement of the base body the separator opposite the sandwich plate a variant of the separating device according to the invention, in the case of which the base body of the separating device on the support about an axis running parallel to the plate plane is pivotally mounted.

Eine weitere Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß der Grundkörper der Trennvorrichtung mittels der Maschinenführung gegen die Wirkung einer Rückstellkraft aus einer Ruhestellung in eine Arbeitsstellung bewegbar bzw. schwenkbar ist. Unter der Wirkung der Rückstellkraft bewegt sich der Grundkörper der Trennvorrichtung und mit diesem die Schneidkette selbsttätig in eine Position, in welcher sich die Schneidkette außer Eingriff mit der betreffenden Sandwichplatte befindet.Another embodiment of the invention is characterized in that that the base body of the separating device by means of Machine guidance against the effect of a restoring force from a The rest position can be moved or swiveled into a working position is. The moves under the action of the restoring force Base body of the cutting device and with it the cutting chain automatically in a position in which the cutting chain is disengaged from the sandwich panel in question.

Zur Erleichterung der Bedienung ist in bevorzugter Ausgestaltung der Erfindung vorgesehen, daß der Grundkörper der Trennvorrichtung in der Arbeitsstellung mit verschiedenen Lagen, gegebenenfalls mit verschiedenen Schwenklagen, der Schneidkette bzw. der Kettenführung gegenüber der betreffenden Sandwichplatte arretierbar, vorzugsweise verrastbar ist. Eine einmal eingestellte, zweckmäßige Relativlage von Schneidkette bzw. Kettenführung und Sandwichplatte bleibt auf diese Art und Weise ohne Zutun des Vorrichtungsbedieners beibehalten.In order to facilitate operation, the preferred embodiment the invention provided that the base body of the separating device in the working position with different positions, if necessary with different swivel positions, the cutting chain or the chain guide opposite the relevant sandwich panel can be locked, preferably locked. Once set, Appropriate relative position of the cutting chain or chain guide and sandwich plate is left without in this way Keep the device operator's efforts.

Als konstruktiv einfach gestaltete und gleichzeitig funktionsgerechte Auflage der Maschinenführung ist im Fall einer weiteren Variante der erfindungsgemäßen Trennvorrichtung eine Auflageplatte vorgesehen, die einen Schlitz für die relativ zu der Sandwichplatte bewegte Schneidkette sowie die Kettenführung aufweist.As structurally simple and functional at the same time Machine guidance is mandatory in the case of another Variant of the separating device according to the invention a support plate provided a slot for the relative to the Sandwich plate moving cutting chain and chain guide having.

Neben der vorstehend beschriebenen Trennvorrichtung hat die vorliegende Erfindung auch eine Schneidkette für eine derartige Trennvorrichtung zum Gegenstand. Dabei weist die erfindungsgemäße Schneidkette Kettenglieder auf, wie sie in Anspruch 19 beschrieben sind.In addition to the separation device described above, the present invention also a cutting chain for such Separating device to the object. The inventive one Cutting chain chain links as described in claim 19 are.

Nachstehend wird die Erfindung anhand schematischer Darstellungen zu einem Ausführungsbeispiel näher erläutert. Es zeigen:

Figur 1
eine Trennvorrichtung mit Schneidkette beim Bearbeiten einer Sandwichplatte,
Figur 2
die Sandwichplatte gemäß Figur 1 nach einer weiteren Bearbeitung mit der Trennvorrichtung gemäß Figur 1,
Figur 3
einen Ausschnitt aus dem geradlinig geführten Teil der Schneidkette gemäß Figur 1,
Figur 4
einen Ausschnitt aus dem Bereich der unteren Umlenkung der Schneidkette gemäß Figur 1,
Figur 5
einen vergrößerten Querschnitt entlang Linie V-V in Figur 4 und
Figuren 6 und 7
Kettenglieder der Schneidkette gemäß den Figuren 1 und 3 bis 5 in der Einzeldarstellung.
The invention is explained in more detail below on the basis of schematic representations of an exemplary embodiment. Show it:
Figure 1
a cutting device with a cutting chain when processing a sandwich panel,
Figure 2
1 after further processing with the separating device according to FIG. 1,
Figure 3
1 shows a section of the straight part of the cutting chain according to FIG. 1,
Figure 4
1 shows a section of the area of the lower deflection of the cutting chain according to FIG. 1,
Figure 5
an enlarged cross section along line VV in Figure 4 and
Figures 6 and 7
Individual links of the cutting chain according to FIGS. 1 and 3 to 5.

Ausweislich Figur 1 umfaßt eine Trennvorrichtung 1 zum Bearbeiten einer Sandwichplatte 2 einen Grundkörper 3 mit einer Führungsschiene 4 für eine endlose Schneidkette 5. An beiden Enden der Führungsschiene 4 wird die Schneidkette 5 entlang einer kreisbogenförmigen Bahn umgelenkt, an den Längsseiten der Führungsschiene 4 wird die Schneidkette 5 geradlinig geführt. Zum Antrieb der Schneidkette 5 dient ein Elektromotor 6 mit zwei Geschwindigkeits-Schaltstufen. An seiner dem Elektromotor 6 gegenüber liegenden Seite ist der Grundkörper 3 der Trennvorrichtung 1 mit einem in Figur 1 aufgebrochenen Gehäuse 7 versehen, welches die Schneidkette 5 antriebsseitig unter Bildung eines Zwischenraumes 8 zwischen Schneidkette 5 und Gehäuse 7 umschließt. In den Zwischenraum 8 mündet ein Absaugschlauch 9, der über einen Anschlußstutzen 10 des Gehäuses 7 an letzterem angebracht und mit seinem anderen Ende an einen saugend betriebenen Lüfter angeschlossen ist.According to Figure 1 includes a separator 1 for processing a sandwich plate 2 a base body 3 with a guide rail 4 for an endless cutting chain 5. At both ends the guide rail 4, the cutting chain 5 along a deflected arcuate path, on the long sides of the guide rail 4, the cutting chain 5 is guided in a straight line. To the The cutting chain 5 is driven by an electric motor 6 with two Speed switching stages. On its opposite the electric motor 6 lying side is the base body 3 of the separating device 1 provided with a housing 7 broken open in FIG. 1, which the cutting chain 5 on the drive side to form a Intermediate space 8 between the cutting chain 5 and housing 7 encloses. A suction hose 9 opens into the intermediate space 8, the one on a connecting piece 10 of the housing 7 on the latter attached and with its other end to a suction operated Fan is connected.

Eine Maschinenführung 11 der Trennvorrichtung 1 besteht im wesentlichen aus einer Auflageplatte 12 sowie einer Schwenklagerung 13, mittels derer der Grundkörper 3 der Trennvorrichtung 1 um eine parallel zu der Plattenebene der Sandwichplatte 2 verlaufende Achse 14 schwenkbar mit der Auflageplatte 12 verbunden ist. Ein Doppelpfeil 15 veranschaulicht die Richtung der Relativ-Schwenkbewegung von Grundkörper 3 und Auflageplatte 12.A machine guide 11 of the separating device 1 essentially consists from a support plate 12 and a swivel bearing 13, by means of which the base body 3 of the separating device 1 around a parallel to the plate plane of the sandwich plate 2 Axis 14 pivotally connected to the support plate 12 is. A double arrow 15 illustrates the direction of the relative pivoting movement of base body 3 and support plate 12.

Ein Schlitz 16 in der Auflageplatte 12 erlaubt es, den Grundkörper 3 der Trennvorrichtung 1 und mit diesem die Schneidkette 5 zwischen der Arbeitsstellung gemäß Figur 1 und einer Ruhestellung, in welcher sich die Schneidkette 5 außer Eingriff mit der Sandwichplatte 2 befindet, hin und her zu schwenken. Zur Ausführung dieser Schwenkbewegung stehen dem Bediener der Trennvorrichtung 1 Handgriffe 17, 18 an dem Grundkörper 3 zur Verfügung. Beim Verschwenken des Grundkörpers 3 mit der Schneidkette 5 von der Ruhe- in die Arbeitsstellung ist eine elastische Gegenkraft zu überwinden, die von einer bei Ausführung der betreffenden Schwenkbewegung verformten und nicht im einzelnen dargestellten Torsionsfeder der Schwenklagerung 13 aufgebracht wird. In der Arbeitsstellung kann der Grundkörper 3 der Trennvorrichtung 1 mit unterschiedlichen Schwenklagen des Grundkörpers 3 gegenüber der Auflageplatte 12 und somit mit unterschiedlichen Schwenklagen der Schneidkette 5 und der Führungsschiene 4 gegenüber der Sandwichplatte 2 arretiert werden. Hierzu dient eine Rastvorrichtung 19. Diese umfaßt eine Mehrzahl von Rastöffnungen an dem Grundkörper 3 der Trennvorrichtung 1 sowie einen in axialer Richtung gegen Federkraft verschiebbaren arretierbaren Rastzapfen 20, der an einem mit der Auflageplatte 12 verbundenen Lagerbock 21 der Schwenklagerung 13 in seiner axialen Richtung verschiebbar gehalten ist. Die Rastöffnungen befinden sich an der dem Betrachter von Figur 1 abgewandten Seite des Grundkörpers 3 und sind in Richtung der Schwenkbewegung des Grundkörpers 3 hintereinander angeordnet. In Abhängigkeit von der gewünschten Neigung der Führungsschiene 4 mit der Schneidkette 5 gegenüber der Auflageplatte 12 rastet der Bediener der Trennvorrichtung 1 den arretierbaren Rastzapfen 20 in eine der Rastöffnungen ein.A slot 16 in the support plate 12 allows the base body 3 of the separating device 1 and with this the cutting chain 5 between the working position according to FIG. 1 and a rest position, in which the cutting chain 5 is out of engagement with the sandwich plate 2 is to swing back and forth. to Execution of this swivel movement is the operator of the Separating device 1 handles 17, 18 on the base body 3 Available. When pivoting the base body 3 with the Cutting chain 5 from the rest to the working position is one overcome elastic counterforce by one when running the pivotal movement in question and not deformed individually shown torsion spring of the pivot bearing 13 is applied. In the working position, the base body 3 the separating device 1 with different pivot positions of the Base body 3 opposite the support plate 12 and thus with different Swivel positions of the cutting chain 5 and the guide rail 4 can be locked against the sandwich plate 2. A latching device 19 is used for this purpose. It comprises a plurality of locking openings on the base body 3 of the separating device 1 and an axially displaceable against spring force lockable locking pin 20, which on one with the Platen 12 connected bearing block 21 of the pivot bearing 13 is held displaceably in its axial direction. The Locking openings are located on the viewer of Figure 1 facing away from the base body 3 and are in the direction of Pivotal movement of the base body 3 arranged one behind the other. Depending on the desired inclination of the guide rail 4 engages with the cutting chain 5 opposite the support plate 12 the operator of the separating device 1 the lockable locking pin 20 in one of the locking openings.

Ehe sich die in Figur 1 dargestellten Verhältnisse ergeben haben, war der Grundkörper 3 bei eingeschaltetem Elektromotor 6 aus einer Ruhestellung, in welcher sich die Schneidkette 5 sowie die Kettenführung 4 auf der von der Sandwichplatte 2 abgewandten Seite der Auflageplatte 12 befunden hatten, im Gegenuhrzeigersinn um die Achse 14 geschwenkt worden. Im Laufe dieser Schwenkbewegung war die Schneidkette 5 durch den Schlitz 16 der Auflageplatte 12 auf der Oberfläche der Sandwichplatte 2 zur Auflage gekommen. Infolge fortgesetzter Schwenkbewegung hatte sich die Schneidkette 5 in die Sandwichplatte 2 eingeschnitten, bis sie schließlich am Ende der Schwenkbewegung mit der Führungsschiene 4 wie in Figur 1 gezeigt gegen die Sandwichplatte 2 geneigt war. Anschließend war die Trennvorrichtung 1 von dem Bediener in Schnittrichtung, nämlich in Richtung eines Pfeils 22, auf der Sandwichplatte 2 gleitend verschoben und auf diese Art und Weise in der Sandwichplatte 2 ein Trennschlitz erstellt worden, der im Innern der Fläche der Sandwichplatte 2 seinen Ausgang nimmt. Während des gesamten Bearbeitungsvorgangs war die Schneidkette 5 in der durch einen Pfeil 23 veranschaulichten Bewegungsrichtung umgelaufen. Beim Bearbeiten der Sandwichplatte 2 hatte die Schneidkette 5 die verschiedenen Lagen der Sandwichplatte 2 durchtrennt. Der dabei gebildete Schneidstaub war in den Zwischenraum 8 zwischen der Schneidkette 5 und dem Gehäuse 7 angesaugt und von dort über den Absaugschlauch 9 abgeführt worden. Die Auflageplatte 12 diente zum Schutz des Bedieners vor der umlaufenden Schneidkette 5.Before the relationships shown in FIG. 1 have arisen, was the base body 3 with the electric motor 6 switched on from a rest position in which the cutting chain 5 and the chain guide 4 on that facing away from the sandwich plate 2 Side of the platen 12 had been counterclockwise have been pivoted about the axis 14. In the course of this The cutting chain 5 was pivoted through the slot 16 the support plate 12 on the surface of the sandwich plate 2 came into circulation. As a result of continued pivoting movement cutting chain 5 had cut into sandwich panel 2, until they finally end up with the swivel motion the guide rail 4 as shown in Figure 1 against the sandwich panel 2 was inclined. Then the separator was 1 by the operator in the cutting direction, namely in the direction of a Arrow 22, sliding on the sandwich plate 2 and in this way a separation slot in the sandwich panel 2 has been created inside the surface of the sandwich panel 2 takes its exit. During the entire editing process was the cutting chain 5 in the by an arrow 23 illustrated direction of movement circulated. When editing of the sandwich plate 2, the cutting chain 5 had the different ones Layers of the sandwich plate 2 severed. The one there Formed cutting dust was in the space 8 between the Cutting chain 5 and the housing 7 sucked in and from there the suction hose 9 has been removed. The platen 12 served to protect the operator from the rotating cutting chain 5th

Eine weitere Möglichkeit zur Bearbeitung der Sandwichplatte 2 mit der Trennvorrichtung 1 ist in Figur 2 dargestellt. In diesem Fall war die Trennvorrichtung 1 mit der Auflageplatte 12 bei senkrecht zu der Sandwichplatte 2 nach unten weisender Führungsschiene 4 für die Schneidkette 5 auf der Sandwichplatte 2 aufgesetzt und anschließend ausgehend von dem freien Rand der Sandwichplatte 2 ein unter anderem von einer Schnittfläche 24 begrenzter Trennschlitz erstellt worden. Da sich dabei die Schneidkette 5 mit ihrem an der Führungsschiene 4 geradlinig geführten Bereich mit der Sandwichplatte 2 im Eingriff befand, ergab sich als den Trennschlitz in Schnittrichtung begrenzende Frontfläche eine ebene Fläche. An die Erstellung des ersten Trennschlitzes schloß sich in entsprechender Art und Weise die Erstellung eines zweiten Trennschlitzes an, der sich ausgehend von dem freien Rand der Sandwichplatte 2 parallel zu dem ersten Trennschlitz erstreckte. Danach wurde die Trennvorrichtung um 90° um eine senkrecht zu der Plattenebene der Sandwichplatte 2 verlaufende Achse gedreht und mit in Ruhestellung befindlicher Schneidkette 5 zwischen den inneren Enden der zuvor erstellten Trennschlitze angesetzt. Anschließend schnitt sich die Schneidkette 5 unter entsprechendem Verschwenken des Grundkörpers 3 der Trennvorrichtung 1 in die Sandwichplatte 2 ein. Sobald die Führungsschiene 4 senkrecht zu der Plattenebene der Sandwichplatte 2 ausgerichtet war, wurde die Trennvorrichtung 1 ausgehend von dem erstellten Einstich parallel zu dem freien Rand der Sandwichplatte 2 verschoben und dadurch ein zu den beiden zunächst erstellten Trennschlitzen senkrecht verlaufender Trennschlitz freigeschnitten. Eine Schnittfläche 25 bildete dabei eine der in Schnittrichtung verlaufenden Begrenzungsflächen des zuletzt erstellten Trennschlitzes. Auch die Frontfläche dieses Trennschlitzes war geradlinig. Infolgedessen ergaben sich an den Stellen des Aufeinandertreffens der quer zueinander verlaufenden Trennschlitze Ausschnittecken mit geradlinigen Scheitellinien, von denen in Figur 2 eine Scheitellinie 26 sichtbar ist. Aufgrund der gewählten Ausrichtung der Führungsschiene 4 verlaufen die erstellten Schnittflächen 24, 25 sowie die in Figur 2 nicht erkennbare, der Schnittfläche 24 gegenüberliegende Schnittfläche und die Schnittfläche 25 senkrecht zueinander sowie senkrecht zu der Plattenebene der Sandwichplatte 2.Another possibility for processing the sandwich panel 2 with the separating device 1 is shown in Figure 2. In this The case was the separating device 1 with the support plate 12 with the guide rail pointing downwards perpendicular to the sandwich panel 2 4 for the cutting chain 5 on the sandwich plate 2 put on and then proceeding from the free edge of the Sandwich plate 2, inter alia, from a cut surface 24 limited separation slot has been created. Since the Cutting chain 5 with its straight on the guide rail 4 guided area was in engagement with the sandwich panel 2, was found to limit the cutting slot in the cutting direction Front surface is a flat surface. The creation of the first Trennschlitzes closed in a corresponding manner Creation of a second separating slot that starts out from the free edge of the sandwich plate 2 parallel to the first Separation slot extended. After that, the separator was turned around 90 ° around a perpendicular to the plate plane of the sandwich plate 2 extending axis rotated and with at rest Cutting chain 5 between the inner ends of the previously created Separation slots attached. Then the cutting chain cut 5 with corresponding pivoting of the base body 3 the separating device 1 into the sandwich plate 2. As soon as the Guide rail 4 perpendicular to the plane of the sandwich panel 2 was aligned, the separator 1 went out of the created groove parallel to the free edge the sandwich plate 2 shifted and thereby one to the two initially created separating slots running vertically Cutting slot cut free. A cut surface 25 formed one of the boundary surfaces running in the cutting direction of the last created separation slot. Even the front surface this separation slot was straightforward. As a result at the places where the cross meets running separating slots cut corners with straight lines Vertex lines, of which an apex line 26 in FIG. 2 is visible. Due to the chosen orientation of the guide rail 4 run the created cut surfaces 24, 25 and that which cannot be seen in FIG. 2 and is opposite the cut surface 24 Cutting surface and the cutting surface 25 perpendicular to each other and perpendicular to the plane of the sandwich panel Second

Gemäß Figur 3 umfaßt die Schneidkette 5 drei nebeneinanderliegende Reihen von Kettengliedern 27, 28, 29. Dabei bilden die Kettenglieder 27, 29 konstruktiv miteinander übereinstimmende Außenglieder, die Kettenglieder 28 Mittenglieder der Schneidkette 5. Nebeneinanderliegende Außenglieder 27, 29 fluchten miteinander, die Mittenglieder 28 sind in der Bewegungsrichtung 23 der Schneidkette 5 und somit der Kettenglieder 27, 28, 29 gegen die Außenglieder 27, 29 versetzt. Jedes Mittenglied 28 überlappt mit jeweils zwei in der Bewegungsrichtung 23 hintereinander liegenden Außengliedern 27, 29 der beiden äußeren Kettengliederreihen. Die Verbindung zwischen den Kettengliedern 27, 28, 29 wird hergestellt mittels Verbindungsbolzen 30. Wie insbesondere aus Figur 5 hervorgeht, durchsetzt jeder Verbindungsbolzen 30 zwei nebeneinanderliegende Außenglieder 27, 29 sowie das zwischen diesen liegende Mittenglied 28. In ihren den Mittengliedern 28 zugeordneten axialen Abschnitten sind die Verbindungsbolzen 30 zu einem Bund 31 radial erweitert. In Figur 5 strichpunktiert angedeutet ist die Mittelebene der Führungsschiene 4, welche den Verlauf der zu ihr parallelen Bewegungsebenen der Kettenglieder 27, 28, 29 der Kettengliederreihen bzw. der Schneidkette 5 definiert. Außenliegende Flächen 32, 33 der Außenglieder 27, 29 sind eben. Die axialen Stirnflächen der Verbindungsbolzen 30 fluchten mit den Flächen 32, 33 der Außenglieder 27, 29.According to Figure 3, the cutting chain 5 comprises three side by side Rows of chain links 27, 28, 29 Chain links 27, 29 are structurally identical Outer links, the chain links 28 middle links of the cutting chain 5. Align adjacent outer links 27, 29 with each other, the center links 28 are in the direction of movement 23 of the cutting chain 5 and thus of the chain links 27, 28, 29 offset against the outer links 27, 29. Each center link 28 overlaps with two in a row in the direction of movement 23 lying outer links 27, 29 of the two outer chain link rows. The connection between the chain links 27, 28, 29 is produced by means of connecting bolts 30. How emerges in particular from Figure 5, penetrates each connecting bolt 30 two adjacent outer links 27, 29 and the middle member 28 between them. In their the Axial sections assigned to center members 28 are the Connecting bolt 30 radially expanded to form a collar 31. In figure 5 dash-dotted lines indicate the central plane of the guide rail 4, which shows the course of the parallel movement planes the chain links 27, 28, 29 of the chain link rows or the cutting chain 5 defined. Outside surfaces 32, 33 of the outer links 27, 29 are flat. The axial faces the connecting bolts 30 are aligned with the surfaces 32, 33 the outer links 27, 29.

Die Verbindungsbolzen 30 bilden die Schwenkachsen, um welche die in ihrer Bewegungsrichtung 23 hintereinander liegenden Kettenglieder 27, 28, 29 relativ zueinander schwenkbar sind. Schneidzähne 34 in Form von Sägezähnen stehen an den Kettengliedern 27, 28, 29 in radialer Richtung vor und sind mit Schneidkanten 35 versehen, die in Querrichtung der Bewegungsebenen der Kettenglieder 27, 28, 29 verlaufen und sich dabei jeweils über die gesamte Breite der Kettenglieder 27, 28, 29 erstrecken. Die Schneidkanten 35 der Mittenglieder 28 stehen an der Schneidkette 5 gegenüber den Schneidkanten 35 der Außenglieder 27, 29 in radialer Richtung um etwa 0,7 mm vor.The connecting bolts 30 form the pivot axes about which the chain links lying one behind the other in their direction of movement 23 27, 28, 29 are pivotable relative to one another. Cutting teeth 34 in the form of saw teeth are on the chain links 27, 28, 29 in the radial direction and are with Cutting edges 35 provided in the transverse direction of the planes of movement the chain links 27, 28, 29 run and thereby each across the entire width of the chain links 27, 28, 29 extend. The cutting edges 35 of the central links 28 are in contact the cutting chain 5 opposite the cutting edges 35 of the outer links 27, 29 in the radial direction by about 0.7 mm.

Wie sich insbesondere den Figuren 6 und 7 entnehmen läßt, sind die senkrechten Projektionen der Schneidkanten 35 in die Bewegungsebene sowohl an den Außengliedern 27, 29 als auch an den Mittengliedern 28 entlang einer radial nach außen gekrümmten Bogenlinie 36, 37 angeordnet. In ihrem Krümmungsradius stimmen die Bogenlinien 36, 37 miteinander überein. Die Abstände der einander entlang den Bogenlinien 36, 37 benachbarten Schneidkanten 35 variieren ebenso wie die Tiefe der Zahnlücken zwischen den betreffenden Schneidzähnen 34.As can be seen in particular from FIGS. 6 and 7, are the vertical projections of the cutting edges 35 into the plane of movement both on the outer links 27, 29 and on the Center members 28 along a radially outwardly curved Arc line 36, 37 arranged. Right in their radius of curvature the arc lines 36, 37 match each other. The distances of the mutually along the arc lines 36, 37 adjacent cutting edges 35 as well as the depth of the tooth gaps vary between the relevant cutting teeth 34.

Gemäß Figur 4 bedingt die Anordnung der Schneidkanten 35 an den Außengliedern 27, 29 sowie an den Mittengliedern 28 entlang den Bogenlinien 36, 37, daß die Schneidkanten 35 an den Außengliedern 27, 29 im Bereich der Umlenkung der Schneidkette 5 ebenso ein und dieselbe Bewegungsbahn beschreiben wie die Schneidkanten 35 der Mittenglieder 28. Die Bewegungsbahnen der Schneidkanten 35 an den Außen- sowie an den Mittengliedern sind in Figur 4 gestrichelt veranschaulicht und mit den Bezugszeichen 38, 39 versehen. Sie verlaufen konzentrisch mit einer Krümmung, welche den miteinander übereinstimmenden Krümmungen der Bogenlinien 36, 37 entspricht.According to Figure 4, the arrangement of the cutting edges 35 on the Outer members 27, 29 and on the middle members 28 along the Curved lines 36, 37 that the cutting edges 35 on the outer links 27, 29 in the region of the deflection of the cutting chain 5 as well describe the same trajectory as the cutting edges 35 of the middle links 28. The trajectories of the cutting edges 35 on the outer and middle links are in Figure 4 illustrated in broken lines and with the reference symbol 38, 39 provided. They are concentric with a curve, which match the curvatures of the arc lines 36, 37 corresponds.

In Figur 4 ebenfalls erkennbar sind Führungsansätze 40 der Mittenglieder 28, mittels welcher die Schneidkette 5 in einer Führungsnut 41 der Führungsschiene 4 (Fig. 5) in Bewegungsrichtung 23 geführt ist. Die Außenglieder 27, 29 stützen sich mit geradlinigen Grundflächen auf der Führungsnut 41 benachbarten Führungsflächen der Führungsschiene 4 ab.Also shown in FIG. 4 are guide lugs 40 of the central links 28, by means of which the cutting chain 5 in a guide groove 41 of the guide rail 4 (Fig. 5) in the direction of movement 23 is performed. The outer links 27, 29 are supported with straight lines Base areas on the guide groove 41 adjacent guide surfaces the guide rail 4.

Alternativ zu den gezeigten Verhältnissen kann zur Umlenkung der Schneidkette 5 auch ein Kettenrad verwendet werden. As an alternative to the conditions shown, you can redirect the cutting chain 5 a sprocket can also be used.

Gemäß Figur 5 verringert sich die Gesamtbreite der Schneidkette 5 mit zunehmendem Abstand von den Schneidkanten 35 der Außenglieder 27, 29 sowie der Mittenglieder 28. Infolgedessen ergibt sich zwischen den außenliegenden Flächen 32, 33 der Außenglieder 27, 29 und in Figur 5 gestrichelt angedeuteten Schnittflächen der Sandwichplatte 2 beidseits der Schneidkette 5 jeweils ein Freiwinkel α.According to FIG. 5, the overall width of the cutting chain is reduced 5 with increasing distance from the cutting edges 35 of the outer links 27, 29 and the middle members 28. As a result between the outer surfaces 32, 33 of the outer links 27, 29 and cut surfaces indicated by dashed lines in FIG. 5 the sandwich plate 2 on both sides of the cutting chain 5 each a clearance angle α.

Claims (19)

  1. A severing device for machining sandwich panels (2), having a motor-driven cutting tool which is movable in the cutting direction relative to the sandwich panel (2) to be machined and which has cutting elements which are guided by means of a guide device in a plane of movement that in the use state extends transversely to the plane of the sandwich panel, wherein a cutting chain (5) having cutting elements in the form of chain links (27, 28, 29) is provided as the cutting tool and a chain guide (4) is provided as the guide device, wherein the chain links (27, 28, 29), which lie one behind another in their direction of movement (23), can be pivoted relative to one another about pivot axes extending transversely to their plane of movement and are guided by means of the chain guide (4) in the plane of movement partly in a straight line and partly with a curved direction-change, and have in each case several cutting teeth (34) lying one behind another in their direction of movement (23), which cutting teeth (34) project in a radial direction on the cutting chain (5) and are provided with cutting edges (35) extending in the transverse direction of the plane of movement of the chain links (27, 28, 29), wherein the perpendicular projections of the cutting edges (35) into the plane of movement are arranged at least partially along a radially outwardly curved line (36, 37) the curvature of which is so selected that the cutting edges (35) arranged on the curved line (36, 37) describe the same path of movement (38, 39) in the region of the curved direction-change of the chain links (27, 28, 29).
  2. A severing device according to claim 1, characterised in that the radius of curvature of the curved line (36, 37), along which the perpendicular projections of the cutting edges (35) on the chain links (27, 28, 29) into the plane of movement are arranged, is from 0.8 to 2.5 times the smallest radius of curvature of the path of movement described by the perpendicular projections of the cutting edges (35) into the plane of movement during the curved direction-change of the chain links (27, 28, 29).
  3. A severing device according to either of the preceding claims, characterised in that the cutting chain (5) has three rows of chain links (27, 28, 29) lying side by side, the chain links of the two outside rows forming outer links (27, 29) and the chain links of the row lying between the latter forming central links (28), and the outer links (27,29) that lie side by side being flush with each other and the central links (28) being offset from the outer links (27, 29) in the direction of movement (23) of the chain links (27, 28, 29) and overlapping outer links (27, 29) lying one behind another in their direction of movement (23).
  4. A severing device according to any one of the preceding claims, characterised in that the adjacent outer links (27, 29) and central links (28) are joined to one another by connection studs (30) the axes of which form the pivot axes about which the chain links (27, 28, 29) lying one behind another in their direction of movement (23) can be pivoted relative to one another.
  5. A severing device according to any one of the preceding claims, characterised in that the connection studs (30) are each widened radially to form a collar (31) in their axial portions associated with the central links (28).
  6. A severing device according to any one of the preceding claims, characterised in that the cutting edges (35), at least of outer links (27, 29) lying side by side, are flush with one another.
  7. A severing device according to any one of the preceding claims, characterised in that the outer faces (32, 33) of the chain links or outer links (27, 29) are flat.
  8. A severing device according to any one of the preceding claims, characterised in that at least one of the outer faces (32, 33) of the chain links or outer links (27, 29) extends with a clearance angle (α) being formed with respect to the respectively associated cut face on the sandwich panel (2).
  9. A severing device according to any one of the preceding claims, characterised in that the chain links (27, 28, 29) each have at least five cutting teeth (34).
  10. A severing device according to any one of the preceding claims, characterised in that the cutting edges (35) of at least a portion of the central links (28) on the cutting chain (5) project in the radial direction with respect to the cutting edges (35) of the outer links (27, 29).
  11. A severing device according to any one of the preceding claims, characterised in that the spacing of the cutting edges (35) of mutually adjacent cutting teeth (34) on a chain link (27, 28, 29) varies.
  12. A severing device according to any one of the preceding claims, characterised in that the cutting chain (5) is at least partially surrounded by a housing (7) at the drive end, a space (8) which is connectable to a suction device being formed between the cutting chain (5) and the inside wall of the housing.
  13. A severing device according to any one of the preceding claims, characterised in that a machine guide (11) is provided by means of which a basic body (3) of the severing device (1) provided with the cutting chain (5) is movable in guided manner relative to the relevant sandwich panel (2), especially when the sandwich panel (2) is being pierced, in order to machine the latter.
  14. A severing device according to any one of the preceding claims, characterised in that the machine guide (11) comprises a base which can be supported on the sandwich panel (2) to be machined and on which the basic body (3) of the severing device (1) is mounted to be movable in guided manner relative to the sandwich panel (2).
  15. A severing device according to any one of the preceding claims, characterised in that the basic body (3) of the severing device (1) is mounted on the base to be pivotable about an axis (14) extending parallel to the plane of the panel.
  16. A severing device according to any one of the preceding claims, characterised in that the basic body (3) of the severing device (1) is movable or pivotable by means of the machine guide (11) from a resting position into a working position against the action of a restoring force.
  17. A severing device according to any one of the preceding claims, characterised in that the basic body (3) of the severing device (1) is arrestible, preferably lockable, in the working position in various attitudes, where applicable in various angular attitudes, of the cutting chain (5) or the chain guide (4) relative to the relevant sandwich panel (2).
  18. A severing device according to any one of the preceding claims, characterised in that a base plate (12) is provided as the base for the machine guide (11), which base plate (12) has a slot (16) for the cutting chain (5) moved relative to the sandwich panel (2) and for the chain guide (4).
  19. A cutting chain for a severing device according to any one of the preceding claims, characterised by chain links (27, 28, 29) which, lying one behind another in a direction of movement (23), are guided by means of a chain guide (4) partly in a straight line and partly with a curved direction-change in a plane of movement and can be pivoted relative to one another about pivot axes extending transversely to the plane of movement and have in each case several cutting teeth (34) lying one behind another in their direction of movement (23), which cutting teeth (34) project in a radial direction on the cutting chain (5) and are provided with cutting edges (35) extending in the transverse direction of the plane of movement of the chain links (27, 28, 29), wherein the perpendicular projections of the cutting edges (35) into the plane of movement are arranged at least partially along a radially outwardly curved line (36, 37) the curvature of which is so selected that the cutting edges (35) arranged on the curved line (36, 37) describe the same path of movement (38, 39) in the region of the curved direction-change of the chain links (27, 28, 29).
EP99944437A 1998-08-25 1999-08-19 Separating device with cutting chain for processing sandwich panels Expired - Lifetime EP1024936B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29815228U DE29815228U1 (en) 1998-08-25 1998-08-25 Cutting device for processing sandwich panels
DE29815228U 1998-08-25
PCT/EP1999/006067 WO2000010782A1 (en) 1998-08-25 1999-08-19 Separating device with cutting chain for processing sandwich panels

Publications (2)

Publication Number Publication Date
EP1024936A1 EP1024936A1 (en) 2000-08-09
EP1024936B1 true EP1024936B1 (en) 2004-10-13

Family

ID=8061742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99944437A Expired - Lifetime EP1024936B1 (en) 1998-08-25 1999-08-19 Separating device with cutting chain for processing sandwich panels

Country Status (5)

Country Link
US (1) US6408730B1 (en)
EP (1) EP1024936B1 (en)
AT (1) ATE279306T1 (en)
DE (2) DE29815228U1 (en)
WO (1) WO2000010782A1 (en)

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Publication number Publication date
WO2000010782A1 (en) 2000-03-02
DE29815228U1 (en) 1998-11-12
US6408730B1 (en) 2002-06-25
EP1024936A1 (en) 2000-08-09
ATE279306T1 (en) 2004-10-15
DE59910830D1 (en) 2004-11-18

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