EP0250726B1 - Apparatus for cutting substantially cylindrical elements - Google Patents

Apparatus for cutting substantially cylindrical elements Download PDF

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Publication number
EP0250726B1
EP0250726B1 EP87104614A EP87104614A EP0250726B1 EP 0250726 B1 EP0250726 B1 EP 0250726B1 EP 87104614 A EP87104614 A EP 87104614A EP 87104614 A EP87104614 A EP 87104614A EP 0250726 B1 EP0250726 B1 EP 0250726B1
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EP
European Patent Office
Prior art keywords
blade
blade holder
holder
handle
knife
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP87104614A
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German (de)
French (fr)
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EP0250726A3 (en
EP0250726A2 (en
Inventor
Ewald Helmut Beermann
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Martor Argentax EH Beermann KG
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Martor Argentax EH Beermann KG
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Priority to AT87104614T priority Critical patent/ATE65201T1/en
Publication of EP0250726A2 publication Critical patent/EP0250726A2/en
Publication of EP0250726A3 publication Critical patent/EP0250726A3/en
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Publication of EP0250726B1 publication Critical patent/EP0250726B1/en
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F13/00Appliances for smoking cigars or cigarettes
    • A24F13/24Cigar cutters, slitters, or perforators, e.g. combined with lighters

Definitions

  • the invention relates to a device for cutting off essentially cylindrical elements with a handle body having a slit-shaped cavity, a knife carried by a blade holder being pivotable into the cavity, the blade holder carrying a bore outside the blade contour, which is anchored in the handle body by a pivot bolt is reached and the handle in the swivel range of the knife blade carries a transverse opening for receiving the element to be cut.
  • Such cutting devices are represented, for example, by the well-known cigar cutter, the blade usually being a razor blade (US Pat. No. 2,523,575).
  • the known device may work just functionally due to the loose material.
  • the cutter is completely unsuitable for harder materials, such as plastic pipes or rods, due to the poor stability of the razor blade, which is already weakened by its central recess.
  • sawing off the material in question leads to a rough end surface and thus sealing difficulties, while pinching off is generally accompanied by disadvantageous deformation of the profile piece.
  • the invention has for its object to design the device of the type mentioned in such a way that profile bars or tubular elements can be separated smoothly by one operation.
  • the blade holder according to the preamble of claim 1 has a substantially U-shaped configuration in its plane, the lateral legs forming the support surfaces for the knife and the support surfaces recessed into the blade holder and of a substantially U-shaped Cover is overlapped. It is now possible to use a stronger knife blade which is free of a central opening and which is given stable guidance by the bearing surfaces on the lateral legs of the blade holder. The space between the legs of the blade holder provides a sufficiently large free cutting edge for the knife for the cutting process.
  • the bearing surfaces for the knife are recessed in the blade holder and overlapped by a cover, the knife is clamped between the blade holder and the cover, so that secure guidance is ensured. Because the pivot point of the knife holder with inserted knife blade and when the cover is in place, even in the swung-open state, at least at the end inside the gap-shaped cavity of the handle body, the cover is prevented from being loosened and the blade is inadvertently released.
  • the blade holder preferably has recesses which match the holding openings provided in the end region of the knife and which are penetrated by projections of the cover. This ensures a form-fitting engagement between the blade holder, blade and cover, which ensures stabilization of the overall structure and good blade guidance.
  • the bore of the blade holder for receiving the swivel pin is connected via a radial slot to the periphery of the holder, through which the knife holder can be plugged onto the swivel pin.
  • the Slot runs obliquely to the longitudinal axis of the blade holder, so that there is no fear of the holder slipping while the device is in use.
  • the bore preferably represents a latching opening for the pivot pin at the end of the slot.
  • the axis of the transverse opening forms an angle of essentially 90 ° with the surface of the handle.
  • the transverse opening can also consist of two superimposed, essentially cylindrical penetrations of the handle, the axes of which intersect approximately in the knife plane and form an angle with one another of approximately 45 °. It is thus possible to use the same device to either produce a cut surface perpendicular to the longitudinal central axis of the object, or also to make an oblique cut, as can be the case, for example, with cartridge sleeves for applying an adhesive or sealant composition.
  • Fig. 1 shows the cutting device, which is provided in its entirety with the reference numeral 10, in the closed or folded state.
  • the handle body 11 which is designed as a flat block, is tapered in the middle in order to achieve a more handy grip.
  • the ends and edges are rounded.
  • the blade holder 12 which is located within the handle 11, is only indicated by dashed lines.
  • the pivot pin 13 extends through both Shells of the handle body 11 and ends approximately with the outer surface.
  • a transverse opening 14 In the central region of the handle body 11 there is a transverse opening 14, the shape and configuration of which will be explained in more detail below with reference to FIG. 3.
  • a crescent-shaped recess 15 is provided, in which the back of the blade holder 12 is visible.
  • a groove 16 provided in this area of the blade holder 12 permits the engagement of a fingernail or thumb nail to pivot out the blade holder 12.
  • the slit-shaped cavity 17 for accommodating the blade holder 12, which is to be explained later and is arranged within the handle 11, is likewise only indicated in FIG. 1 by a dashed line.
  • the blade holder 12 is essentially U-shaped, the two legs each carrying a recess 20 which form a contact surface for the end regions of the knife blade 18 .
  • Bores 21 are provided in the area of these contact surfaces and can be made to coincide with corresponding bores 22 in the end edge areas of the knife blade 18.
  • the cover 23 is also essentially U-shaped, a corresponding recess being provided for the yoke-like transition part between the legs in the blade holder 12.
  • the cover 23 carries two molded pins 24 which protrude into the plane of the drawing in FIG. 2 and, in the assembled state, dig through the bores 22 of the knife blade 18 and the bores 21 of the blade holder 12 in order to close the blade 18 on the blade holder 12 fix.
  • the blade holder 12 is essentially semicircular and provided with a pivot bore 25 in the center.
  • a radial slot 26 extends from the bore 25, which extends obliquely to the longitudinal center axis of the blade holder 12 and has a width which is somewhat less than the diameter of the bore 25.
  • the bore 25 thus represents a latching opening for the pivot pin 13 already described in connection with FIG. 1.
  • the transverse bore extending through the handle body 11 is set 14 composed of two essentially cylindrical penetrations, the axes A and B of which intersect in the plane of the knife blade 18.
  • the two axes A and B enclose an angle ⁇ which is approximately 45 °.
  • the element to be cut can accordingly be introduced into the transverse opening 14 from different directions, so that after cutting through there is a correspondingly inclined cutting surface.
  • the two switches of the handle body 11 each have an inwardly directed bead 27 on the circumference of the transverse opening 14, which bears against the free area of the knife blade 18 and represents a guide during the cutting process.
  • the blade holder 12 or in the clamping areas of the blade holder 12 together with the knife blade 18 and the cover 19 essentially fill the gap-shaped cavity 17. Accordingly, the inner surfaces of the gap-shaped cavity 17 form a guide for the blade holder 12 within the handle 11 and at the same time hold the cover 23 firmly on the blade holder 12, so that the knife blade is securely fixed as long as the latching opening 25 engages with the pivot pin 13 is located.
  • the disassembly of the entire blade holder 12 for the purpose of replacing the knife blade 18 proceeds, as mentioned above, as follows: the blade holder 12 is pivoted out in the direction x and in Longitudinal direction y of the slot 26 is pulled out of the locking position with the pivot pin 13.
  • the blade holder 12 is assembled in a very simple manner as follows: the inner region of the blade holder 12 is inserted into the gap-shaped cavity 17 in such a way that the outer slot opening 30 engages around the pivot pin 13. Then pressure is continuously exerted on the upper narrow side in the pivoting direction z.
  • the convex edge 28 of the free end face of the knife holder 12 slides at a pitch 32 outside an inner straight edge 29 of the handle body 11 which extends transversely to the longitudinal axis L of the handle 11.
  • the radius describing the convex edge 28 increases in the course of the pivoting movement in the direction z and such Measure from R1 to R2 that the bore 25 is inevitably moved into its locking position with the pivot pin 13.
  • the radius R3 (distance of the pitch point 32 to the pivot pin 13) is larger by a slight movement than the largest radius R2.
  • the slot 26 extends from its mouth to the latching bore 25 in a slightly wedge-shaped manner, which additionally facilitates the assembly and disassembly of the blade holder 12.

Abstract

The apparatus for cutting off a substantially cylindrical piece from a cylindrical object comprises a handle with a gap like cavity in which a knife blade carried by a blade holder is pivotable. The blade holder is substantially U-shape. In the side arms of the U-shape blade holder recesses are provided which form supporting surfaces for the end regions of the knife blade. Advantageously a U-shape cover is provided with projecting pins which holds the knife blade in place in the blade holder. A transverse pivot passage in the blade holder outside of the blade contour with a radial slot extending therefrom can provide a catch opening for a pivot bolt anchored in the handle.

Description

Die Erfindung betrifft eine Vorrichtung zum Abschneiden von im wesentlichen zylindrischen Elementen mit einem einen spaltförmigen Hohlraum aufweisenden Griffkörper, wobei in den Hohlraum ein von einem Klingenhalter getragenes Messer einschwenkbar ist, wobei der Klingenhalter außerhalb der Klingenkontur eine Bohrung trägt, die von einem im Griffkörper verankerten Schwenkbolzen durchgriffen ist und das Griffstück im Schwenkbereich der Messerklinge eine Queröffnung für die Aufnahme des abzuschneidenden Elementes trägt.The invention relates to a device for cutting off essentially cylindrical elements with a handle body having a slit-shaped cavity, a knife carried by a blade holder being pivotable into the cavity, the blade holder carrying a bore outside the blade contour, which is anchored in the handle body by a pivot bolt is reached and the handle in the swivel range of the knife blade carries a transverse opening for receiving the element to be cut.

Derartige Abschneidevorrichtungen werden etwa durch den allseits bekannten Zigarrenabschneider repräsentiert, wobei die Klinge üblicherweise eine Rasierklinge darstellt (US-A-2 523 575). Für das Abtrennen des Zugendes einer Zigarre mag die bekannte Vorrichtung infolge des lockeren Werkstoffes gerade noch funktionsgerecht arbeiten. Für härtere Werkstoffe, wie etwa Kunststoffrohre oder -stangen, ist der Abschneider jedoch völlig ungeeignet infolge der mangelnden Stabilität der ohnehin durch ihre Mittelaussparung geschwächten Rasierklinge. Andererseits führt ein Absägen des angesprochenen Materials zu einer rauhen Endfläche und damit Dichtungsschwierigkeiten, während ein Abkneifen allgemein mit einer nachteiligen Deformation des Profilstückes einhergeht.Such cutting devices are represented, for example, by the well-known cigar cutter, the blade usually being a razor blade (US Pat. No. 2,523,575). For the separation of the end of a cigar, the known device may work just functionally due to the loose material. However, the cutter is completely unsuitable for harder materials, such as plastic pipes or rods, due to the poor stability of the razor blade, which is already weakened by its central recess. On the other hand, sawing off the material in question leads to a rough end surface and thus sealing difficulties, while pinching off is generally accompanied by disadvantageous deformation of the profile piece.

Angesichts dieser Problematik liegt der Erfindung die Aufgabe zugrunde, die Vorrichtung der eingangs genannten Art so auszugestalten, daß sich Profilstäbe oder rohrförmige Elemente durch einen Arbeitsgang glatt abtrennen lassen.In view of this problem, the invention has for its object to design the device of the type mentioned in such a way that profile bars or tubular elements can be separated smoothly by one operation.

Gelöst wird diese Aufgabe gemäß der Erfindung durch die im Kennzeichen des Hauptanspruches angegebenen Merkmale, wobei hinsichtlich bevorzugter Ausführungsformen auf die Merkmale der Unteransprüche verwiesen wird.This object is achieved according to the invention by the features specified in the characterizing part of the main claim, reference being made to the features of the subclaims with regard to preferred embodiments.

Nach der Erfindung besitzt der Klingenhalter nach dem Oberbegriff des Anspruchs 1 eine in seiner Ebene im wesentlichen U-förmige Ausbildung, wobei die seitlichen Schenkel die Auflageflächen für das Messer bilden und die Auflageflächen als Aussparungen in den Klingenhalter eingelassen und von einer im wesentlichen U-förmigen Abdeckung übergriffen sind. Damit kann nunmehr eine stärkere, von einer Mittelöffnung freie Messer-klinge eingesetzt werden, die durch die Auflageflächen an den seitlichen Schenkeln des Klingenhalters eine stabile Führung erfährt. Der Freiraum zwischen den Schenkeln des Klingenhalters stellt eine hinreichend große freie Schneidkante des Messers für den Abtrennvorgang zur Verfügung.According to the invention, the blade holder according to the preamble of claim 1 has a substantially U-shaped configuration in its plane, the lateral legs forming the support surfaces for the knife and the support surfaces recessed into the blade holder and of a substantially U-shaped Cover is overlapped. It is now possible to use a stronger knife blade which is free of a central opening and which is given stable guidance by the bearing surfaces on the lateral legs of the blade holder. The space between the legs of the blade holder provides a sufficiently large free cutting edge for the knife for the cutting process.

Weil die Auflageflächen für das Messer als Aussparungen in den Klingenhalter eingelassen und von einer Abdeckung übergriffen sind, ist das Messer zwischen dem Klingenhalter und der Abdeckung eingespannt, so daß eine sichere Führung gewährleistet ist. Da sich der Schwenkpunkt des Messerhalters mit eingesetzter Messerklinge und aufgelegter Abdeckung selbst in aufgeschwenktem Zustand zumindest endseitig innerhalb des spaltförmigen Hohlraumes des Griffkörpers befindet, wird ein Lösen der Abdeckung und damit eine unbeabsichtigte Freigabe der Klinge verhindert.Because the bearing surfaces for the knife are recessed in the blade holder and overlapped by a cover, the knife is clamped between the blade holder and the cover, so that secure guidance is ensured. Because the pivot point of the knife holder with inserted knife blade and when the cover is in place, even in the swung-open state, at least at the end inside the gap-shaped cavity of the handle body, the cover is prevented from being loosened and the blade is inadvertently released.

Zum Stand der Technik ist noch auf die DE-C-322 675 hinzuweisen, aus der ein Klappmesser bekannt ist, dessen Rasierklinge in einem im wesentlichen U-förmigen Klingenhalter eingeklemmt ist. Diesem Messer fehlen jedoch alle weiteren einschlägigen Merkmale, insbesondere weist sein Griffkörper keine Queröffnung zur Aufnahme des zu schneidenden Gegenstandes auf. Schon deshalb ist dieses bekannte Messer nicht zur Lösung der zugrundegelegten Aufgabe geeignet.With regard to the prior art, reference is also made to DE-C-322 675, from which a folding knife is known, the razor blade of which is clamped in an essentially U-shaped blade holder. However, this knife lacks all other relevant features, in particular its handle body has no transverse opening for receiving the object to be cut. For this reason alone, this known knife is not suitable for solving the underlying task.

Der Klingenhalter trägt bevorzugt mit im Endbereich des Messers vorgesehene Halteöffnungen übereinstimmende Aussparungen, die von Vorsprüngen der Abdeckung durchgriffen sind. Hierdurch ist ein formschlüssiger Eingriff zwischen Klingenhalter, Klinge und Abdeckung gewährleistet, wodurch eine Stabilisierung des Gesamtaufbaues und eine gute Klingenführung sichergestellt sind.The blade holder preferably has recesses which match the holding openings provided in the end region of the knife and which are penetrated by projections of the cover. This ensures a form-fitting engagement between the blade holder, blade and cover, which ensures stabilization of the overall structure and good blade guidance.

Die Bohrung des Klingenhalters für die Aufnahme des Schwenkbolzens steht, gemäß einer zweckmäßigen Ausgestaltung der Erfindung, über einen Radialschlitz mit der Peripherie des Halters in Verbindung, durch welchen der Messerhalter auf den Schwenkbolzen aufsteckbar ist. Hierdurch gestaltet sich das eventuell erforderlich werdende Auswechseln der Klinge besonders einfach. Der Schlitz verläuft schräg zur Längsachse des Klingenhalters, so daß während der Benutzung der Vorrichtung ein Ausgleiten des Halters nicht zu befürchten ist. Bevorzugt stellt die Bohrung eine Rastöffnung für den Schwenkbolzen am Ende des Schlitzes dar.According to an expedient embodiment of the invention, the bore of the blade holder for receiving the swivel pin is connected via a radial slot to the periphery of the holder, through which the knife holder can be plugged onto the swivel pin. This makes the replacement of the blade, which may become necessary, particularly easy. The Slot runs obliquely to the longitudinal axis of the blade holder, so that there is no fear of the holder slipping while the device is in use. The bore preferably represents a latching opening for the pivot pin at the end of the slot.

Im Normalfall bildet die Achse der Queröffung mit der Oberfläche des Griffstückes einen Winkel von im wesentlichen 90° . Die Queröffnung kann jedoch auch aus zwei einander überlagernden, im wesentlichen zylindrischen Durchdringungen des Griffstückes bestehen, deren Achsen sich etwa in der Messerebene schneiden und einen Winkel miteinander von ca. 45° bilden. Somit ist es möglich, mit der gleichen Vorrichtung entweder eine Schnittfläche senkrecht zur Längsmittelachse des Gegenstandes zu erzeugen, oder auch einen Schräg-schnitt auszuführen, wie dies etwa bei Kartuschentüllen zum Auftrag einer Klebe- oder Dichtungsmittelmasse der Fall sein kann.In the normal case, the axis of the transverse opening forms an angle of essentially 90 ° with the surface of the handle. However, the transverse opening can also consist of two superimposed, essentially cylindrical penetrations of the handle, the axes of which intersect approximately in the knife plane and form an angle with one another of approximately 45 °. It is thus possible to use the same device to either produce a cut surface perpendicular to the longitudinal central axis of the object, or also to make an oblique cut, as can be the case, for example, with cartridge sleeves for applying an adhesive or sealant composition.

Es hat sich schließlich noch als zweckmäßig erwiesen, die Queröffung des Griffkörpers an ihrem Umfang jeweils mit einem nach innen gerichteten Wulst zu versehen. Dieser Wulst liegt beim Schneidvorgang an der Messerklinge an und bietet dementsprechend eine wesentlich bessere Klingenführung und damit eine erhöhte Schneidqualität.Finally, it has proven to be expedient to provide the transverse opening of the handle body with an inward bead on its circumference. This bead lies against the knife blade during the cutting process and accordingly offers a much better blade guidance and thus an increased cutting quality.

Weitere Einzelheiten, Vorteile und erfindungswesentliche Merkmale ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Ausführungsform der erfindungsgemäßen Abschneidvorrichtung unter Bezugnahme auf die beigefügten Zeichnungen. Dabei zeigt im einzelnen:

Fig. 1
die Draufsicht auf die erfindungsgemäße Vorrichtung.
Fig. 2
die Draufsicht auf den Klingenhalter, die Klinge und die Abdeckung gemäß der Erfindung, in nebeneinanderliegender Darstellung, und
Fig. 3
einen Schnitt durch die erfindungsgemäße Vorrichtung entlang der Schnittlinie III-III der Fig. 1, in größerem Maßstab.
Further details, advantages and features essential to the invention result from the following description of a preferred embodiment of the cutting device according to the invention with reference to the accompanying drawings. The individual shows:
Fig. 1
the top view of the device according to the invention.
Fig. 2
the top view of the blade holder, the blade and the cover according to the invention, in a side-by-side view, and
Fig. 3
a section through the device according to the invention along the section line III-III of FIG. 1, on a larger scale.

Die Fig. 1 zeigt die Schneidvorrichtung, die in ihrer Gesamtheit mit der Bezugsziffer 10 versehen ist, in geschlossenem bzw. zusammengeklapptem Zustand. Der als flacher Block ausgebildete Griffkörper 11 ist zur Erzielung einer handlicheren Griffigkeit in der Mitte verjüngt ausgestaltet. Die Enden und Kanten sind abgerundet.Fig. 1 shows the cutting device, which is provided in its entirety with the reference numeral 10, in the closed or folded state. The handle body 11, which is designed as a flat block, is tapered in the middle in order to achieve a more handy grip. The ends and edges are rounded.

In der Darstellung in Fig. 1 ist der Klingenhalter 12, der sich innerhalb des Griffstückes 11 befindet, nur durch gestrichelte Linien angedeutet. Der Schwenkbolzen 13 durchgreift beide Schalen des Griffkörpers 11 und schließt etwa mit der Außenfläche ab.In the illustration in Fig. 1, the blade holder 12, which is located within the handle 11, is only indicated by dashed lines. The pivot pin 13 extends through both Shells of the handle body 11 and ends approximately with the outer surface.

Im mittleren Bereich des Griffkörpers 11 befindet sich eine Queröffnung 14, deren Form und Ausgestaltung nachfolgend noch unter Bezugnahme auf Fig. 3 nähe erläutert werden wird. Am seitlichen Rand des Griffkörpers 11 ist eine sichelfömige Aussparung 15 vorgesehen, in welcher der Rücken des Klingenhalters 12 sichtbar wird. Eine in diesem Bereich des Klingenhalters 12 vorgesehe Nut 16 gestattet den Eingriff eines Finger- oder Daumennagels zum Ausschwenken des Klingenhalters 12.In the central region of the handle body 11 there is a transverse opening 14, the shape and configuration of which will be explained in more detail below with reference to FIG. 3. At the side edge of the handle body 11, a crescent-shaped recess 15 is provided, in which the back of the blade holder 12 is visible. A groove 16 provided in this area of the blade holder 12 permits the engagement of a fingernail or thumb nail to pivot out the blade holder 12.

Der später noch zu erläuternde, innerhalb des Griffstückes 11 angeordnete spaltförmige Hohlraum 17 zur Aufnahme des Klingenhalters 12 ist in Fig. 1 ebenfalls lediglich durch eine gestrichelte Linie angedeutet.The slit-shaped cavity 17 for accommodating the blade holder 12, which is to be explained later and is arranged within the handle 11, is likewise only indicated in FIG. 1 by a dashed line.

Die Fig. 2 zeigt den Klingenhalter 12 mit getrennt hiervon dargestellter Messerklinge 18 und Abdeckung 23. Der Klingenhalter 12 ist im wesentlichen U-förmig ausgestaltet, wobei die beiden Schenkel jeweils eine Aussparung 20 tragen, die eine Auflagefläche für die endseitigen Bereiche der Messerklinge 18 bilden. Im Bereich dieser Auflageflächen sind Bohrungen 21 vorgesehen, die mit entsprechenden Bohrungen 22 in den endseitigen Randbereichen der Messerklinge 18 zur Deckung bringbar sind.2 shows the blade holder 12 with the knife blade 18 and cover 23 shown separately therefrom. The blade holder 12 is essentially U-shaped, the two legs each carrying a recess 20 which form a contact surface for the end regions of the knife blade 18 . Bores 21 are provided in the area of these contact surfaces and can be made to coincide with corresponding bores 22 in the end edge areas of the knife blade 18.

Die Abdeckung 23 ist ebenfalls im wesentlichen U-förmig ausgestaltet, wobei für den jochartigen Übergangsteil zwischen den Schenkeln im Klingenhalter 12 eine entsprechende Aussparung vorgesehen ist. Die Abdeckung 23 trägt zwei angeformte Zapfen 24, die in der Darstellung in Fig. 2 in die Zeichenebene hineinragen und und in montiertem Zustand die Bohrungen 22 der Messerklinge 18 sowie die Bohrungen 21 des Klingenhalters 12 durchgriefen, um die Messerklinge 18 an dem Klingenhalter 12 zu fixieren.The cover 23 is also essentially U-shaped, a corresponding recess being provided for the yoke-like transition part between the legs in the blade holder 12. The cover 23 carries two molded pins 24 which protrude into the plane of the drawing in FIG. 2 and, in the assembled state, dig through the bores 22 of the knife blade 18 and the bores 21 of the blade holder 12 in order to close the blade 18 on the blade holder 12 fix.

Am schwenkpunktseitigen Ende ist der Klingenhalter 12 im wesentlichen halbkreisförmig ausgebildet und mittig mit einer Schwenkbohrung 25 versehen. Von der Bohrung 25 geht ein Radialschlitz 26 aus, der schräg zur Längsmittelachse des Klingenhalters 12 verläuft und eine Breite besitzt, die etwas geringer als der Durchmesser der Bohrung 25 ist. Damit stellt die Bohrung 25 eine Rastöffnung für den bereits im Zusammenhang mit Fig. 1 beschriebenen Schwenkbolzen 13 dar. Bei ausgeklapptem Klingenhalter 12 läßt sich dieser gegen den Rastwiderstand vom Schwenkbolzen 13 abziehen, so daß ein Wechsel der Messerklinge 18 möglich ist. Hierzu wird die Abdeckung 23 abgehoben, wobei sich die Zapfen 24 aus den Bohrungen 21 und 22 des Klingenhalters bzw. der Messerklinge lösen.At the end of the pivot point, the blade holder 12 is essentially semicircular and provided with a pivot bore 25 in the center. A radial slot 26 extends from the bore 25, which extends obliquely to the longitudinal center axis of the blade holder 12 and has a width which is somewhat less than the diameter of the bore 25. The bore 25 thus represents a latching opening for the pivot pin 13 already described in connection with FIG. 1. When the blade holder 12 is extended, it can be pulled off the pivot pin 13 against the latching resistance, so that the knife blade 18 can be changed. For this purpose, the cover 23 is lifted off, the pins 24 detaching from the bores 21 and 22 of the blade holder or the knife blade.

Wie im besonderen die Fig. 3 zeigt, setzt sich die den Griffkörper 11 durchgreifende Querbohrung 14 aus zwei im wesentlichen zylindrischen Durchdringungen zusammen, deren Achsen A und B sich in der Ebene der Messerklinge 18 schneiden. die beiden Achsen A und B schließen einen Winkelα ein, der bei etwa 45° liegt. Das abzuschneidende Element läßt sich dementsprechend unter verschiedenen Richtungen in die Queröffung 14 einbringen, so daß sich nach dem Durchtrennen eine entsprechend geneigte Schnittfläche ergibt.As shown in FIG. 3 in particular, the transverse bore extending through the handle body 11 is set 14 composed of two essentially cylindrical penetrations, the axes A and B of which intersect in the plane of the knife blade 18. the two axes A and B enclose an angle α which is approximately 45 °. The element to be cut can accordingly be introduced into the transverse opening 14 from different directions, so that after cutting through there is a correspondingly inclined cutting surface.

Die beiden Schalten des Griffkörpers 11 tragen am Umfang der Queröffnung 14 jeweils einen nach innen gerichteten Wulst 27, der im freien Bereich der Messerklinge 18 an dieser anliegt und eine Führung während des Schneidvorganges darstellt. Im übrigen füllt der Klingenhater 12 bzw. in den Einspannbereichen der Klingenhalter 12 zusammen mit der Messerklinge 18 und der Abdeckung 19 den spaltförmigen Hohlraum 17 im wesentlichen aus. Dementsprechend bilden die Innenflächen des spaltförmigen Hohlraumes 17 innerhalb des Griffstückes 11 eine Führung für den Klingenhalter 12 und halten gleichzeitig die Abdeckung 23 fest auf dem Klingenhalter 12, so daß eine sichere Fixierung der Messerklinge gegeben ist, solange sich die Rastöffnung 25 in Eingriff mit dem Schwenkbolzen 13 befindet.The two switches of the handle body 11 each have an inwardly directed bead 27 on the circumference of the transverse opening 14, which bears against the free area of the knife blade 18 and represents a guide during the cutting process. In addition, the blade holder 12 or in the clamping areas of the blade holder 12 together with the knife blade 18 and the cover 19 essentially fill the gap-shaped cavity 17. Accordingly, the inner surfaces of the gap-shaped cavity 17 form a guide for the blade holder 12 within the handle 11 and at the same time hold the cover 23 firmly on the blade holder 12, so that the knife blade is securely fixed as long as the latching opening 25 engages with the pivot pin 13 is located.

Die Demontage des gesamten Klingenhalters 12 zwecks Auswechselung der Messerklinge 18 verläuft - wie sinngemäß vorerwähnt - so: der Klingenhalter 12 wird in Richtung x ausgeschwenkt und in Längsrichtung y des Schlitzes 26 aus der Raststellung mit dem Schwenkbolzen 13 gezogen.The disassembly of the entire blade holder 12 for the purpose of replacing the knife blade 18 proceeds, as mentioned above, as follows: the blade holder 12 is pivoted out in the direction x and in Longitudinal direction y of the slot 26 is pulled out of the locking position with the pivot pin 13.

Nach Entfernung der gebrauchten und Einsetzen der neuen Messerklinge 18 vollzieht sich die Montage des Klingenhalters 12 auf höchst einfache Weise wie folgt: der innere Bereich des Klingenhalters 12 wird in den spaltförmigen Hohlraum 17 so eingesetzt, daß die äußere Schlitzmündung 30 den Schwenkbolzen 13 umgreift. Sodann wird in Schwenkrichtung z fortlaufend ein Druck auf die obere Schmalseite ausgeübt. Hierbei gleitet die konvexe Kante 28 der freien Stirnseite des Messerhalters 12 an einem Wälzpunkt 32 außen einer sich quer zur Grifflängsachse L erstreckenden inneren geraden Kante 29 des Griffkörpers 11. Der die konvexe Kante 28 beschreibende Radius nimmt im Verlauf der Schwenkbewegung in Richtung z un ein solches Maß von R₁ nach R₂ zu, daß die Bohrung 25 zwangsläufig in ihre Raststellung mit dem Schwenkbolzen 13 versetzt wird. Der Radius R₃ (Abstand des Wälzpunktes 32 zum Schwenkbolzen 13) ist hierbei um ein geringes Bewegungsspiel größer als der größte Radius R₂.After removing the used and inserting the new knife blade 18, the blade holder 12 is assembled in a very simple manner as follows: the inner region of the blade holder 12 is inserted into the gap-shaped cavity 17 in such a way that the outer slot opening 30 engages around the pivot pin 13. Then pressure is continuously exerted on the upper narrow side in the pivoting direction z. Here, the convex edge 28 of the free end face of the knife holder 12 slides at a pitch 32 outside an inner straight edge 29 of the handle body 11 which extends transversely to the longitudinal axis L of the handle 11. The radius describing the convex edge 28 increases in the course of the pivoting movement in the direction z and such Measure from R₁ to R₂ that the bore 25 is inevitably moved into its locking position with the pivot pin 13. The radius R₃ (distance of the pitch point 32 to the pivot pin 13) is larger by a slight movement than the largest radius R₂.

Vorteilhaft verläuft der Schlitz 26 von seiner Mündung bis zur Rastbohrung 25 leicht keilförmig konvergierend, was die Montage und die Demontage des Klingenhalters 12 zusätzlich erleichtert.Advantageously, the slot 26 extends from its mouth to the latching bore 25 in a slightly wedge-shaped manner, which additionally facilitates the assembly and disassembly of the blade holder 12.

Claims (7)

  1. Device for cutting substantially cylindrical elements, having a handle body (11) with a slot-shaped cavity (17), with a blade (18) carried by a blade holder (12) being designed so as to swivel into the cavity (17), with the blade holder (12) carrying outside of the blade contour a bore (25) which is penetrated by a swivel pin (13) anchored in the handle body (11), and with the handle piece (11) in the swivelling range of the blade (18) carrying a transverse opening (14) for accommodating the element to be cut, characterised in that the blade holder (12) is, in its plane, substantially U-shaped, with the lateral limbs forming the supporting surfaces for the blade (18), and that the supporting surfaces for the blade (18) are let in as a recess (20) into the blade holder (12) and are overlapped by a substantially U-shaped cover (23).
  2. Device according to claim 1, characterised in that the blade holder (12) carries recesses (21) which correspond to retaining openings (22) provided in the end region of the blade (18) and are penetrated by projections (24) of the cover (23).
  3. Device according to claim 1, characterised in that the bore (25) of the blade holder (12) is connected to the periphery of the holder (12) by a radial slot (26), by means of which the blade holder (12) is placeable onto the swivel pin (13).
  4. Device according to claim 3, characterised in that the bore (25) constitutes a catch opening for the swivel pin (13) at the end of the slot (26) extending obliquely to the longitudinal axis of the blade holder (12).
  5. Device according to claim 1, characterised in that the axis of the transverse opening (14) forms an angle of substantially 90° with the surface of the handle piece (11).
  6. Device according to claim 1 or 5, characterised in that the transverse opening (14) comprises two overlying, substantially cylindrical penetrations of the handle piece (11), whose axes (A, B) intersect approximately in the blade plane and enclose an angle of approximately 45°.
  7. Device according to one of the preceding claims, characterised in that the transverse opening (14) of the handle body (11) carries on its periphery inward-directed beads (27) emanating from each of the handle hafts.
EP87104614A 1986-06-26 1987-03-27 Apparatus for cutting substantially cylindrical elements Expired - Lifetime EP0250726B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87104614T ATE65201T1 (en) 1986-06-26 1987-03-27 DEVICE FOR CUTTING SUBSTANTIALLY CYLINDRICAL ELEMENTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863621399 DE3621399A1 (en) 1986-06-26 1986-06-26 DEVICE FOR CUTTING OUT ESSENTIAL CYLINDRICAL ELEMENTS
DE3621399 1986-06-26

Publications (3)

Publication Number Publication Date
EP0250726A2 EP0250726A2 (en) 1988-01-07
EP0250726A3 EP0250726A3 (en) 1989-06-28
EP0250726B1 true EP0250726B1 (en) 1991-07-17

Family

ID=6303744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87104614A Expired - Lifetime EP0250726B1 (en) 1986-06-26 1987-03-27 Apparatus for cutting substantially cylindrical elements

Country Status (5)

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US (1) US4837931A (en)
EP (1) EP0250726B1 (en)
AT (1) ATE65201T1 (en)
DE (2) DE3621399A1 (en)
DK (1) DK163187A (en)

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Also Published As

Publication number Publication date
US4837931A (en) 1989-06-13
ATE65201T1 (en) 1991-08-15
DK163187A (en) 1987-12-27
EP0250726A3 (en) 1989-06-28
DE3771398D1 (en) 1991-08-22
DE3621399C2 (en) 1988-12-15
EP0250726A2 (en) 1988-01-07
DE3621399A1 (en) 1988-01-14
DK163187D0 (en) 1987-03-31

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