EP0250726A2 - Apparatus for cutting substantially cylindrical elements - Google Patents

Apparatus for cutting substantially cylindrical elements Download PDF

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Publication number
EP0250726A2
EP0250726A2 EP87104614A EP87104614A EP0250726A2 EP 0250726 A2 EP0250726 A2 EP 0250726A2 EP 87104614 A EP87104614 A EP 87104614A EP 87104614 A EP87104614 A EP 87104614A EP 0250726 A2 EP0250726 A2 EP 0250726A2
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EP
European Patent Office
Prior art keywords
blade
blade holder
knife
handle
holder
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.)
Granted
Application number
EP87104614A
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German (de)
French (fr)
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EP0250726A3 (en
EP0250726B1 (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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Publication date
Application filed by Martor Argentax EH Beermann KG filed Critical Martor Argentax EH Beermann KG
Priority to AT87104614T priority Critical patent/ATE65201T1/en
Publication of EP0250726A2 publication Critical patent/EP0250726A2/en
Publication of EP0250726A3 publication Critical patent/EP0250726A3/en
Application granted granted Critical
Publication of EP0250726B1 publication Critical patent/EP0250726B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 grip body having a gap-shaped cavity, a knife carried by a blade holder being pivotable into the cavity.
  • Such cutting devices are represented, for example, by the well-known cigar cutter, the blade usually being a razor blade.
  • 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 cut off smoothly in one operation.
  • the blade holder has an essentially U-shaped design, the lateral legs forming the contact surfaces for the knife. It is now possible to use a stronger knife blade which is free from a central opening and which is given stable guidance by the contact 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. So that the knife is clamped between the blade holder and the cover, so that secure guidance is guaranteed. Since the pivot point of the knife holder with the inserted knife blade and the cover in place is at least at the end inside the gap-shaped cavity of the handle body even in the swung-open state, loosening of the cover and thus unintentional release of the blade is prevented.
  • 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 blade holder preferably carries a bore outside the blade contour, which is penetrated by a pivot bolt anchored in the handle body. As a result, the blade is not weakened in any way by a hole that would otherwise be required to accommodate the pivot pin.
  • the blade therefore has only the two holding openings for the projections of the cover in its two end regions.
  • 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 extends 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 handle piece has a transverse opening for the element to be cut in the swivel range of the knife.
  • 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 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 closes 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 gap-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 by a dashed line in FIG. 1.
  • the blade holder 12 shows the blade holder 12 with the knife blade 18 and cover 23 shown separately therefrom.
  • the blade holder 18 is essentially U-shaped, the two legs each carrying a recess 20 which form a bearing 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 drawing plane in the illustration 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 knife 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 cross extending through the handle body 11 is set bore 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.

Landscapes

  • Knives (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Turning (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

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 Elenemten mit einem einen spaltförmigen Hohlraum aufweisenden Griffkörper, wobei in den Hohlraum ein von einem Klingenhalter getragenes Messer ein­schwenkbar ist.The invention relates to a device for cutting off essentially cylindrical elements with a grip body having a gap-shaped cavity, a knife carried by a blade holder being pivotable into the cavity.

Derartige Abschneidevorrichtungen werden etwa durch den allseits bekannten Zigarrenab­schneider repräsentiert, wobei die Klinge üb­licherweise eine Rasierklinge darstellt. 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. 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 cut off smoothly in 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 eine im wesentlichen U-förmige Ausbildung, wobei die seitlichen Schenkel die Auflageflächen für das Messer bilden. Damit kann nunmehr eine stär­kere, von einer Mittelöffnung freie Messerklinge 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 has an essentially U-shaped design, the lateral legs forming the contact surfaces for the knife. It is now possible to use a stronger knife blade which is free from a central opening and which is given stable guidance by the contact 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.

Gemäß der bevorzugten Ausführungsform der Er­findung sind die Auflageflächen für das Messer als Aussparungen in den Klingenhalter eingelassen und von einer Abdeckung übergriffen. Damit 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.According to the preferred embodiment of the invention, the bearing surfaces for the knife are recessed in the blade holder and overlapped by a cover. So that the knife is clamped between the blade holder and the cover, so that secure guidance is guaranteed. Since the pivot point of the knife holder with the inserted knife blade and the cover in place is at least at the end inside the gap-shaped cavity of the handle body even in the swung-open state, loosening of the cover and thus unintentional release of the blade is prevented.

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.

Der Klingenhalter trägt bevorzugt außerhalb der Klingenkontur eine Bohrung, die von einem im Griffkörper verankerten Schwenkbolzen durchgrif­fen ist. Damit erfährt die Klinge keinerlei Schwä­chung durch eine andernfalls für die Aufnahme des Schwenkbolzens erforderlichen Bohrung. Die Klinge weist also nur die beiden Halteöffnungen für die Vorsprünge der Abdeckung in ihren beiden Endberei­chen auf.The blade holder preferably carries a bore outside the blade contour, which is penetrated by a pivot bolt anchored in the handle body. As a result, the blade is not weakened in any way by a hole that would otherwise be required to accommodate the pivot pin. The blade therefore has only the two holding openings for the projections of the cover in its two end regions.

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 extends 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.

In vorteilhafter Ausgestaltung der erfin­dungsgemäßen Vorrichtung trägt das Griffstück im Schwenkbereich des Messers eine Queröffnung für das abzuschneidende Element. Für den Abtrennvor­gang wird lediglich der Profilstab oder das rohr­förmige Element in die Queröffung eingeführt und ein Druck auf die Rückseite des Klingenhalters ausgeübt. Eine sichere Halterung ist damit gewähr­leistst und eine Verletzungsgefahr der Bedienung­sperson praktisch ausgeschlossen. 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 Schräg­schnitt auszuführen, wie dies etwa bei Kartuschen­tüllen zum Auftrag einer Klebe- oder Dichtungs­mittelmasse der Fall sein kann.In an advantageous embodiment of the device according to the invention, the handle piece has a transverse opening for the element to be cut in the swivel range of the knife. For the separation process, only the profile bar or the tubular element is inserted into the transverse opening and pressure is exerted on the back of the blade holder. This ensures a secure mounting and practically eliminates the risk of injury to the operator. 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 on its circumference with an inwardly directed bead. This bead lies on 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 is a plan view of the device according to the invention.
  • Fig. 2 is a plan view of the blade holder, the blade and the cover according to the invention, in a side-by-side view, and
  • Fig. 3 shows 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. zusammenge­klappten 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, 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 closes 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 gap-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 by a dashed line in FIG. 1.

Die Fig. 2 zeigt den Klingenhalter 12 mit ge­trennt hiervon dargestellter Messerklinge 18 und Abdeckung 23. Der Klingenhalter 18 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 18 is essentially U-shaped, the two legs each carrying a recess 20 which form a bearing 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 drawing plane in the illustration 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 knife 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 pivot point end, 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 coming out of 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 Quer­ bohrung 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 cross extending through the handle body 11 is set bore 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 (10)

1. 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, dadurch ge­kennzeichnet, daß der Klingenhalter (12) eine im wesentlichen U-förmige Ausbildung besitzt, wobei die seitlichen Schenkel die Auflageflächen für die Messerklinge (18) bilden.1. Device for cutting off substantially cylindrical elements with a grip body having a slit-shaped cavity, wherein a knife carried by a blade holder can be pivoted into the cavity, characterized in that the blade holder (12) has a substantially U-shaped configuration, wherein the side legs form the contact surfaces for the knife blade (18). 2. Vorrichtung nach Anspruch 1, dadurch ge­kennzeichnet, daß die Auflageflächen für die Mes­serklinge (18) als Aussparungen (20) in den Klingenhalter (12) eingelassen und von einer Ab­deckung (23) übergriffen sind.2. Apparatus according to claim 1, characterized in that the contact surfaces for the knife blade (18) as recesses (20) in the blade holder (12) are inserted and overlapped by a cover (23). 3. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Klingenhalter (12) mit im Endbereich der Messer­klinge (18) vorgesehenen Halteöffnungen (22) über­einstimmende Aussparungen (21) trägt, die von Vor­sprüngen (24) der Abdeckung (23) durchgriffen sind.3. Device according to one of the preceding claims, characterized in that the blade holder (12) with in the end region of the knife blade (18) provided holding openings (22) carries corresponding recesses (21) which pass through by projections (24) of the cover (23) are. 4. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Klingenhalter (12) außerhalb der Klingenkontur eine Bohrung (25) trägt, die von einem im Griff­körper (11) verankerten Schwenkbolzen (13) durch­griffen ist.4. Device according to one of the preceding claims, characterized in that the blade holder (12) outside the blade contour carries a bore (25) which is penetrated by a pivot pin (13) anchored in the handle body (11). 5. Vorrichtung nach Anspruch 4, dadurch ge­kennzeichnet, daß die Bohrung (25) des Klingen­halters (12) über einen Radialschlitz (26) mit der Peripherie des Halters (12) in Verbindung steht, durch welchen der Klingenhalter (12) auf den Schwenkbolzen (13) aufsteckbar ist.5. The device according to claim 4, characterized in that the bore (25) of the blade holder (12) via a radial slot (26) is connected to the periphery of the holder (12) through which the blade holder (12) on the pivot pin ( 13) can be plugged on. 6. Vorrichtung nach Anspruch 5, dadurch ge­kennzeichnet, daß die Bohrung (25) eine Rast­öffung für den Schwenkbolzen (13) am Ende des schräg zur Längsachse des Klingenhalters (12) ver­laufenden Schlitzes (26) darstellt.6. The device according to claim 5, characterized in that the bore (25) is a latching opening for the pivot pin (13) at the end of the oblique to the longitudinal axis of the blade holder (12) extending slot (26). 7. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Griff­stück (11) im Schwenkbereich der Messerklinge (18) eine Queröffnung (14) für die Aufnahme des abzuschneidenden Elementes trägt.7. Device according to one of the preceding claims, characterized in that the handle (11) in the pivoting range of the knife blade (18) carries a transverse opening (14) for receiving the element to be cut. 8. Vorrichtung nach Anspruch 7, dadurch ge­kennzeichnet, daß die Achse der Queröffnung (14) mit der Oberfläche des Griffstückes (11) einen Winkel von im wesentlichen 90° bildet.8. The device according to claim 7, characterized in that the axis of the transverse opening (14) with the surface of the handle (11) forms an angle of substantially 90 °. 9. Vorrichtung nach Anspruch 7, dadurch ge­kennzeichnet, daß die Queröffung (14) aus zwei sich einander überlagernden, im wesentlichen zylindrischen Durchdringungen des Griffstückes (11) besteht, deren Achsen (A, B) sich in etwa in der Messerebene schneiden und einen Winkel mitein­ander von ca. 45° bilden.9. The device according to claim 7, characterized in that the transverse opening (14) consists of two superimposed, substantially cylindrical penetrations of the handle (11) whose axes (A, B) intersect approximately in the knife plane and an angle form with each other of approx. 45 °. 10. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Quer­öffnung (14) des Griffkörpers (11) an ihrem Um­fang jeweils von den Griffschalen ausgehende, nach innen gerichtete Wülste (27) trägt.10. Device according to one of the preceding claims, characterized in that the transverse opening (14) of the handle body (11) carries on its circumference outgoing from the handle scales, inwardly directed beads (27).
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
DE3621399 1986-06-26
DE19863621399 DE3621399A1 (en) 1986-06-26 1986-06-26 DEVICE FOR CUTTING OUT ESSENTIAL CYLINDRICAL ELEMENTS

Publications (3)

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

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ID=6303744

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

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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
DE3621399A1 (en) 1988-01-14
DE3771398D1 (en) 1991-08-22
DE3621399C2 (en) 1988-12-15
ATE65201T1 (en) 1991-08-15
DK163187A (en) 1987-12-27
US4837931A (en) 1989-06-13
EP0250726A3 (en) 1989-06-28
EP0250726B1 (en) 1991-07-17
DK163187D0 (en) 1987-03-31

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