EP2529903A1 - Sickle blade - Google Patents

Sickle blade Download PDF

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Publication number
EP2529903A1
EP2529903A1 EP12170658A EP12170658A EP2529903A1 EP 2529903 A1 EP2529903 A1 EP 2529903A1 EP 12170658 A EP12170658 A EP 12170658A EP 12170658 A EP12170658 A EP 12170658A EP 2529903 A1 EP2529903 A1 EP 2529903A1
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EP
European Patent Office
Prior art keywords
cutting
groove
knife according
cutting knife
better
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Granted
Application number
EP12170658A
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German (de)
French (fr)
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EP2529903B1 (en
Inventor
Thomas Völkl
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Voelkl Patente GmbH and Co KG
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers

Definitions

  • the invention relates to rotating, usually non-circular, spiral cutting blade for cutting wet, adherent material to be cut, z. As food, in slices.
  • the cutting angle of the cutting wedge should be chosen as small as possible in order to keep the force required for the penetration of the cutting edge low.
  • the knife is usually ground only on one side, so has a continuous to the cutting edge rear side, which faces the cutting material to be cut, and a front side on which adjoins the cutting edge an angle to this main plane cutting surface.
  • the cross-sectional contour of the groove is also arranged sharp-edged with respect to the back, so that not only the friction against the material to be cut is reduced, but also the sharp transition edge can produce abrasion on the material to be cut.
  • the slice to be separated is directed away from the beginning of the cutting process to the cutting material and also from the cutting blade so that a turning of the disc and adhesion to the front of the cutting blade radially within the inclined cutting surface is extremely unlikely.
  • the groove extends for this purpose preferably parallel to the cutting edge. To make optimum use of the effect, the groove should also extend along the entire circumferential length of the cutting edge. In order to minimize even the adhesion to the cutting surface itself, the radial extent of the cutting surface should not be too large, but should be between 0.4 times and 0.9 times the thickness of the cutting blade.
  • the cutting angle should not exceed an upper limit of 50 °, better not more than 45 °.
  • the transition of the groove in the radially inwardly adjacent region is preferably rounded.
  • This intermediate region between the groove and the cutting surface is preferably flat.
  • the cutting blade itself is generally preferably planar, in particular plate-shaped.
  • the thickness of the cutting blade should be less than in the region radially within the groove, at most two thirds as thick, better at most only half as thick.
  • the region radially inside the groove is usually also the maximum thickness of the knife, which is usually made of a plate with a constant thickness by the cutting surface, the groove and possibly the intermediate region are incorporated thereon.
  • the cutting surface itself is preferably not curved in the tangential direction, but flat or slightly concave. As a result, although an adhesion to this flat cutting surface -. B. compared with a concave shape of the cutting surface - more likely, however, this disadvantage is accepted given the small radial extent of the cutting surface and the easier Nachschleifiana the knife at a flat cutting surface.
  • transition from the groove in the radially inner region is rounded to avoid abrasion of the separated disc here.
  • transition of the groove in the radially outer intermediate region is preferably not rounded and forms an angle of at least 20 °, more preferably at least 30 °.
  • FIGS. 1a and b is shown in perspective view and in the plan view from below a cutting device, with the of the end face of a strand-like material to be cut 19, as shown in FIG. 1b it can be seen, by means of a rotating cutting blade 1 successively individual slices are separated.
  • the strand-like material to be cut 19 is guided in a frontally open, usually upright guide tube 18, of which several may be present in the cutting device.
  • the cutting blade 1 rotates about its axis of rotation 10 which lies outside its center, and the material to be cut 19 is arranged in the area of action of the rotating cutting blade 1 and is in each case advanced so far in the longitudinal direction that a slice of the desired thickness is separated.
  • FIGS. 1a, b and also FIG. 2 which shows the cutting blade 1 in detail
  • the cutting blade 1 has a cutting edge 2, which has an increasing in the advancing direction 14 of the contact portion 21 of the rotating cutting blade for Schneidgut 19 distance 4 from its axis of rotation 10, ie in the direction of rotation 3 of the cutting blade. 1 has decreasing distance 4 from its axis of rotation 10 and in particular has the shape of a spiral.
  • the thus formed cutting edge 2 usually extends only over a portion of the circumference of the cutting blade 1, in FIG. 2 about 180 °, in the FIGS. 1a and b even over a much smaller angle. The remainder of the circumference serves during the rotation of the cutting blade 1 to the Nachschieben of the material to be cut.
  • the cutting blade 1 - as in FIG. 2 indicated - two corresponding cutting edges 2, 2 'have, which can be used in different directions of rotation, so that in particular a symmetrical to the center line cutting blade 1, based on its largest diameter, is present.
  • one of the cutting edges 2, 2 ' may be formed partially toothed.
  • FIGS. 3a, b The particular features of the knife according to the invention are mainly in the FIGS. 3a, b to recognize which cutting situations with a cut through the just a disc 20 from the cutting material 19 separating, rotating cutting blade 1 shows:
  • the cutting blade is ground only on the side facing away from the cutting material 19 front 8 and additionally structured, while its back 9 is usually made flat and smooth, as well as the supervision of the back 9 in the FIG. 2 shows.
  • transition of the groove 7 in the intermediate region 12 is not rounded, but executed angularly with an angle 15 of preferably 20 ° to 30 °.
  • the depth of the groove 7 is at least one millimeter, or in other words at least 20%, better at least 30% of the axial distance between the intermediate region 12 and the back 9 of the cutting blade 1.
  • the radial extent of the intermediate region 12 is preferably significantly less than the length 17 of the cutting surface 5, namely preferably less than 50%, better than 30% of their length 17.
  • FIG. 3a that differ from FIG. 3b differs in that the groove 7 directly adjoins the oblique, flat or hollow cutting surface 5 to form a Absprandkante 22 which best separates the disc from the cutting surface 5.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

The knife (1) has a convex bent cutting edge (2) whose distance is increased from a rotational axis (10) in progression direction of a contact region of the knife to a cutting material. The cutting edge is provided with a spiral-shaped outer circumferential contour. A cutting surface of front side (8) of the knife is arranged at cutting angle of 33 degrees to a main plane. A groove is arranged on the front side and radial-inwardly displaceable with respect to the cutting surface. The groove is extended along entire peripheral length of the cutting edge.

Description

I. AnwendungsgebietI. Field of application

Die Erfindung betrifft rotierende, meist unrunde, spiralförmige Schneidmesser zum Aufschneiden von feuchtem, anhaftendem Schneidgut, z. B. Lebensmitteln, in Scheiben.The invention relates to rotating, usually non-circular, spiral cutting blade for cutting wet, adherent material to be cut, z. As food, in slices.

II. Technischer HintergrundII. Technical background

Ein Problem ist dabei die Anhaftung des Schneidgutes am Messer, was zu unerwünschten Erscheinungen wie schnellem Verschleiß der Schneide ebenso führt wie zu hohem Kraftaufwand beim Schneiden und einem Verziehen des Produktes sowie einer unerwünschten Anhaftung der abgetrennten Scheibe am Messer und einer Mitnahme durch das Messer.One problem is the adhesion of the material to be cut on the knife, which leads to undesirable phenomena such as rapid wear of the blade as well as excessive force when cutting and warping the product and an undesirable adhesion of the separated disc on the knife and a take-away by the knife.

Dabei ging man bisher auch davon aus, dass der Schneidwinkel des Schneidkeiles, möglichst klein gewählt werden sollte, um den Kraftaufwand für das Eindringen der Schneide gering zu halten.It was previously also assumed that the cutting angle of the cutting wedge should be chosen as small as possible in order to keep the force required for the penetration of the cutting edge low.

Das Messer ist dabei meist nur auf einer Seite angeschliffen, besitzt also eine bis zur Schneidkante durchgehend ebene Rückseite, die dem aufzuschneidenden Schneidgut zugewandt ist, sowie eine Vorderseite, auf der sich an die Schneidkante eine schräg zu dieser Hauptebene stehende Schneidenfläche anschließt.The knife is usually ground only on one side, so has a continuous to the cutting edge rear side, which faces the cutting material to be cut, and a front side on which adjoins the cutting edge an angle to this main plane cutting surface.

Durch diese schräg stehende Schneidenfläche wird die abzutrennende Scheibe vom Schneidmesser weggeleitet, jedoch umso weniger, je kleiner der Schneidwinkel ist.By this inclined cutting surface the separated slice is guided away from the cutting blade, but the less, the smaller the cutting angle.

In diesem Zusammenhang ist es aus der DE 196 12 055 A1 bereits bekannt, auf der ebenen Rückseite des Messers eine Vielzahl von Vertiefungen, beispielsweise Mulden, vorzusehen, um das Anhaften einzelner Partikel aus dem Schneidgut, vorzugsweise Brot, zu vermeiden.In this context, it is from the DE 196 12 055 A1 It is already known to provide a plurality of recesses, for example depressions, on the flat rear side of the blade in order to prevent the adhesion of individual particles from the material to be cut, preferably bread.

Ferner ist es aus der DE 10 2007 040 350 bekannt, den Schneidwinkel in Umfangsrichtung zu verändern und auch relativ groß zu wählen, beispielsweise zwischen 20° und 30°.Furthermore, it is from the DE 10 2007 040 350 known to change the cutting angle in the circumferential direction and also to choose relatively large, for example between 20 ° and 30 °.

Dies wird jedoch primär nicht für plattenförmige, sondern für schüsselförmige Schneidmesser bei Hochgeschwindigkeits-Slicern empfohlen.However, this is primarily recommended not for plate-shaped but for bowl-shaped cutting knives on high-speed slicers.

Aus der DE 296 05 039 ist es auch bekannt, parallel zur Schneidkante auf der glatten Rückseite des Messers eine Hohlkehle einzuarbeiten und darüber hinaus auf den Messerflächen radial weiter innen Vertiefungen anzuordnen.From the DE 296 05 039 It is also known to incorporate a groove parallel to the cutting edge on the smooth back of the knife and also to arrange on the blade surfaces radially further inside recesses.

Die Querschnittskontur der Hohlkehle ist darüber hinaus scharfkantig gegenüber der Rückseite angeordnet, so dass dadurch nicht nur die Reibung gegenüber dem Schneidgut verringert wird, sondern zusätzlich die scharfe Übergangskante Abrieb am Schneidgut erzeugen kann.The cross-sectional contour of the groove is also arranged sharp-edged with respect to the back, so that not only the friction against the material to be cut is reduced, but also the sharp transition edge can produce abrasion on the material to be cut.

III. Darstellung der ErfindungIII. Presentation of the invention a) Technische Aufgabea) Technical task

Es ist daher die Aufgabe gemäß der Erfindung, ein Schneidmesser zur Verfügung zu stellen, welches auf einfache Art und Weise zuverlässig ein Anhaften der abzutrennenden Scheiben am Messer verhindert und dennoch einfach und kostengünstig herzustellen ist sowie einfach nachschleifbar sein soll und den Kraftaufwand beim Schneiden nicht zu hoch werden lässt.It is therefore the object of the invention to provide a cutting blade which reliably adheres in a simple manner prevents the slices to be separated on the knife and yet easy and inexpensive to manufacture and is easy to be nachschleifbar and can not be too high the force required when cutting.

b) Lösung der Aufgabeb) Solution of the task

Diese Aufgabe wird durch die Merkmale der Ansprüche 1 gelöst. Vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.This object is solved by the features of claims 1. Advantageous embodiments will be apparent from the dependent claims.

Es hat sich herausgestellt, dass die Kombination eines relativ großen Schneidwinkels von mindestens 10°, besser mindestens 20°, besser mindestens 30°, besser mindestens 33°, mit einer auf der abzutrennenden Scheibe zugewandten Vorderseite des Schneidmessers angeordneten Hohlkehle radial innerhalb der Schneidenfläche ein optimaler Kompromiss ist zwischen einem noch vertretbaren Kraftaufwand beim Schneiden und der Vermeidung des Anhaftens oder des Verwerfens von abgetrennten Scheiben.It has been found that the combination of a relatively large cutting angle of at least 10 °, better at least 20 °, better at least 30 °, better at least 33 °, arranged with a facing on the separated pulley front side of the cutting blade groove radially within the cutting edge an optimal A compromise is between a still reasonable effort when cutting and avoiding the adhesion or discarding of separated slices.

Durch den relativ großen Schneidwinkel wird die abzutrennende Scheibe von Beginn des Schneidvorganges an so stark vom Schneidgut und auch vom Schneidmesser weggeleitet, dass ein Umlegen der Scheibe und Anhaften an der Vorderseite des Schneidmessers radial innerhalb der schräg gestellten Schneidfläche äußerst unwahrscheinlich ist.Due to the relatively large cutting angle, the slice to be separated is directed away from the beginning of the cutting process to the cutting material and also from the cutting blade so that a turning of the disc and adhesion to the front of the cutting blade radially within the inclined cutting surface is extremely unlikely.

Selbst wenn dies in Einzelfällen geschehen sollte, schiebt sich die Scheibe während des Abtrennvorganges radial von Außen nach Innen entlang der Vorderseite des Schneidmessers, und überläuft dabei nach der Schneidfläche zunächst die Hohlkehle, und verliert dort den Kontakt mit der Vorderseite des Schneidmessers, was den Anhaftungsprozess in der Regel unterbricht.Even if this happens in individual cases, during the severing process, the disc slides radially from outside to inside along the front of the cutting blade, overflowing the groove after the cutting surface, and losing contact there with the front of the cutting blade, causing the adhesion process usually interrupts.

Die Hohlkehle erstreckt sich zu diesem Zweck vorzugsweise parallel zur Schneidkante. Um den Effekt optimal auszunutzen, sollte sich die Hohlkehle auch entlang der gesamten Umfangslänge der Schneidkante erstrecken. Um auch das Anhaften an der Schneidfläche selbst zu minimieren, sollte die radiale Erstreckung der Schneidfläche nicht allzu groß sein, sondern zwischen 0,4-fachen und dem 0,9-fachen der Dicke des Schneidmessers betragen.The groove extends for this purpose preferably parallel to the cutting edge. To make optimum use of the effect, the groove should also extend along the entire circumferential length of the cutting edge. In order to minimize even the adhesion to the cutting surface itself, the radial extent of the cutting surface should not be too large, but should be between 0.4 times and 0.9 times the thickness of the cutting blade.

Um den Kraftaufwand beim Schneiden zu begrenzen und die abzutrennende Scheibe sowie das Schneidgut nicht zu stark beim Abtrennvorgang zu verformen, sollte der Schneidwinkel eine Obergrenze von 50°, besser maximal 45°, nicht überschreiten. Der Übergang der Hohlkehle in den radial innerhalb angrenzenden Bereich ist vorzugsweise gerundet.In order to limit the force required for cutting and not deform the slice to be cut and the material to be cut too much during the separation process, the cutting angle should not exceed an upper limit of 50 °, better not more than 45 °. The transition of the groove in the radially inwardly adjacent region is preferably rounded.

Es hat sich ferner gezeigt, dass dieser Effekt auch dann erzielt werden kann, wenn sich die Hohlkehle nicht unmittelbar radial nach innen unter Bildung einer Absprungkante an die Schneidfläche anschließt, sondern ein Zwischen-Bereich der Vorderseite des Schneidmessers vorhanden ist, der zur Hauptebene zumindest weniger geneigt ist als die Schneidfläche, vorzugsweise parallel zur Hauptebene verläuft.It has also been shown that this effect can also be achieved if the groove does not adjoin the cutting surface directly radially inwards to form a Absprungkante, but an intermediate region of the front of the cutting blade is present, at least less to the main plane is inclined than the cutting surface, preferably parallel to the main plane.

Dieser Zwischen-Bereich zwischen Hohlkehle und Schneidfläche ist vorzugsweise eben ausgebildet.This intermediate region between the groove and the cutting surface is preferably flat.

Auch das Schneidmesser an sich ist insgesamt vorzugsweise eben ausgebildet, insbesondere plattenförmig ausgebildet.The cutting blade itself is generally preferably planar, in particular plate-shaped.

Im Zwischen-Bereich zwischen Schneidfläche und Hohlkehle sollte die Dicke des Schneidmessers geringer sein als im Bereich radial innerhalb der Hohlkehle, und zwar maximal zwei Drittel so dick, besser maximal nur halb so dick.In the intermediate region between the cutting surface and the groove, the thickness of the cutting blade should be less than in the region radially within the groove, at most two thirds as thick, better at most only half as thick.

Der Bereich radial innerhalb der Hohlkehle ist dabei meist auch die maximale Dicke des Messers, welches in der Regel aus einer Platte mit gleichbleibender Dicke hergestellt wird, indem daran die Schneidfläche, die Hohlkehle sowie ggf. der Zwischen-Bereich eingearbeitet werden.The region radially inside the groove is usually also the maximum thickness of the knife, which is usually made of a plate with a constant thickness by the cutting surface, the groove and possibly the intermediate region are incorporated thereon.

Die Schneidfläche selbst ist in tangentialer Richtung betrachtet vorzugsweise nicht gekrümmt, sondern eben oder aber leicht konkav. Dadurch ist zwar ein Anhaften an dieser ebenen Schneidenfläche - z. B. verglichen mit einer konkaven Form der Schneidfläche - wahrscheinlicher, jedoch wird dieser Nachteil in Kauf genommen angesichts der geringen radialen Erstreckung der Schneidfläche und der leichteren Nachschleifbarkeit des Messers bei einer ebenen Schneidfläche.The cutting surface itself is preferably not curved in the tangential direction, but flat or slightly concave. As a result, although an adhesion to this flat cutting surface -. B. compared with a concave shape of the cutting surface - more likely, however, this disadvantage is accepted given the small radial extent of the cutting surface and the easier Nachschleifbarkeit the knife at a flat cutting surface.

Der Übergang von der Hohlkehle in den radial weiter innen liegenden Bereich ist gerundet, um hier Abrieb der der abgetrennten Scheibe zu vermeiden.The transition from the groove in the radially inner region is rounded to avoid abrasion of the separated disc here.

Der Übergang der Hohlkehle in den radial außerhalb liegenden Zwischen-Bereich ist dagegen vorzugsweise nicht gerundet und bildet einen Winkel von mindestens 20°, besser mindestens 30°.The transition of the groove in the radially outer intermediate region, however, is preferably not rounded and forms an angle of at least 20 °, more preferably at least 30 °.

c) Ausführungsbeispielec) embodiments

Ausführungsformen gemäß der Erfindung sind im Folgenden beispielhaft näher beschrieben. Es zeigen:

Fig. 1 a, b:
eine Schneidvorrichtung,
Fig. 2
ein Schneidmesser,
Fig. 3a, b
Schneidsituationen.
Embodiments according to the invention are described in more detail below by way of example. Show it:
Fig. 1 a, b:
a cutting device,
Fig. 2
a cutting knife,
Fig. 3a, b
Cutting situations.

In den Figuren 1a und b ist in perspektivischer Ansicht sowie in der Aufsicht von unten eine Schneidvorrichtung dargestellt, mit der von der Stirnfläche eines strangförmigen Schneidgutes 19, wie es in Figur 1b ersichtlich ist, mittels eines rotierenden Schneidmessers 1 nacheinander einzelne Scheiben abgetrennt werden.In the FIGS. 1a and b is shown in perspective view and in the plan view from below a cutting device, with the of the end face of a strand-like material to be cut 19, as shown in FIG FIG. 1b it can be seen, by means of a rotating cutting blade 1 successively individual slices are separated.

Zu diesem Zweck ist das strangförmige Schneidgut 19 in einem stirnseitig offenen, meist aufrecht stehenden Führungsrohr 18 geführt, von dem in der Schneidvorrichtung mehrere vorhanden sein können.For this purpose, the strand-like material to be cut 19 is guided in a frontally open, usually upright guide tube 18, of which several may be present in the cutting device.

Das Schneidmesser 1 rotiert um seine Drehachse 10, die außerhalb seiner Mitte liegt, und das Schneidgut 19 ist im Wirkungsbereich des rotierenden Schneidmessers 1 angeordnet und wird jeweils soweit in Längsrichtung vorgeschoben, dass eine Scheibe der gewünschten Dicke abgetrennt wird.The cutting blade 1 rotates about its axis of rotation 10 which lies outside its center, and the material to be cut 19 is arranged in the area of action of the rotating cutting blade 1 and is in each case advanced so far in the longitudinal direction that a slice of the desired thickness is separated.

Wie die Figuren 1a, b und auch Figur 2, welches das Schneidmesser 1 in Detaildarstellung zeigt, erkennen lassen, besitzt das Schneidmesser 1 eine Schneidkante 2, die einen in Fortschrittsrichtung 14 des Kontaktbereiches 21 des drehenden Schneidmessers zum Schneidgut 19 zunehmenden Abstand 4 von seiner Drehachse 10 besitzt, also in Drehrichtung 3 des Schneidmessers 1 abnehmenden Abstand 4 von seiner Drehachse 10 besitzt und insbesondere die Form einer Spirale aufweist.As the FIGS. 1a, b and also FIG. 2 , which shows the cutting blade 1 in detail, let the cutting blade 1 has a cutting edge 2, which has an increasing in the advancing direction 14 of the contact portion 21 of the rotating cutting blade for Schneidgut 19 distance 4 from its axis of rotation 10, ie in the direction of rotation 3 of the cutting blade. 1 has decreasing distance 4 from its axis of rotation 10 and in particular has the shape of a spiral.

Die so geformte Schneidkante 2 erstreckt sich meist nur über einen Teilbereich des Umfanges des Schneidmessers 1, in Figur 2 über etwa 180°, in den Figuren 1a und b sogar über einen deutlich geringeren Winkel. Der Rest des Umfanges dient während der Drehung des Schneidmessers 1 dem Nachschieben des Schneidgutes.The thus formed cutting edge 2 usually extends only over a portion of the circumference of the cutting blade 1, in FIG. 2 about 180 °, in the FIGS. 1a and b even over a much smaller angle. The remainder of the circumference serves during the rotation of the cutting blade 1 to the Nachschieben of the material to be cut.

Dennoch kann das Schneidmesser 1 ― wie in Figur 2 angedeutet - zwei entsprechende Schneidkanten 2, 2' besitzen, die bei unterschiedlichen Drehrichtungen zum Einsatz kommen können, so dass insbesondere ein zur Mittellinie symetrisches Schneidmesser 1, bezogen auf seinen größten Durchmesser, vorliegt. Dabei kann beispielsweise eine der Schneidkanten 2, 2' teilweise gezahnt ausgebildet sein.Nevertheless, the cutting blade 1 - as in FIG. 2 indicated - two corresponding cutting edges 2, 2 'have, which can be used in different directions of rotation, so that in particular a symmetrical to the center line cutting blade 1, based on its largest diameter, is present. In this case, for example, one of the cutting edges 2, 2 'may be formed partially toothed.

Die erfindungsgemäßen Besonderheiten des Messers sind vor allem in den Figuren 3a, b zu erkennen, welche Schneidsituationen mit einem Schnitt durch das gerade eine Scheibe 20 vom Schneidgut 19 abtrennenden, rotierenden Schneidmessers 1 zeigt:The particular features of the knife according to the invention are mainly in the FIGS. 3a, b to recognize which cutting situations with a cut through the just a disc 20 from the cutting material 19 separating, rotating cutting blade 1 shows:

Das Schneidmesser ist nur auf der vom Schneidgut 19 abgewandten Vorderseite 8 angeschliffen und zusätzlich strukturiert, während seine Rückseite 9 in der Regel eben und glatt ausgeführt ist, wie dies auch die Aufsicht auf die Rückseite 9 in der Figur 2 zeigt.The cutting blade is ground only on the side facing away from the cutting material 19 front 8 and additionally structured, while its back 9 is usually made flat and smooth, as well as the supervision of the back 9 in the FIG. 2 shows.

Im Gegensatz zu üblichen Gestaltungen ist jedoch nicht die gesamte Dicke 16 des Schneidmessers 1 schräg angeschliffen mittels einer Schneidfläche 5, die von der Schneidkante 2 an der Rückseite 9, welche die Hauptebene 11 des Schneidmessers 1 definiert, bis zur Vorderseite 8 durchgeht, sondern diese, um den Schneidwinkel 6 zur Hauptebene schräg stehende Schneidfläche 5 verläuft nur über eine solche Länge 17, bis ein Bruchteil, etwa ein Viertel bis die Hälfte der Dicke 16 des Schneidmessers 1, erreicht ist.Unlike conventional designs, however, not the entire thickness 16 of the cutting blade 1 is ground obliquely by means of a cutting surface 5 which passes from the cutting edge 2 on the back 9, which defines the main plane 11 of the cutting blade 1, to the front side 8, but around the cutting angle 6 to the main plane inclined cutting surface 5 extends only over such a length 17 until a fraction, about a quarter to half of the thickness 16 of the cutting blade 1 is reached.

Von diesem radial inneren Ende der in der tangentialen Blickrichtung der Figur 3b eben oder hohl ausgebildeten Schneidfläche 5 schließt sich in Richtung zur Drehachse 10 hin ein Zwischen-Bereich 12 an, der auch eben ist und parallel zur Rückseite 9 und auch zur dazu parallelen Hauptfläche der Vorderseite 8 liegt.From this radially inner end of the in the tangential direction of the FIG. 3b flat or hollow cutting surface 5 is followed in the direction of the axis of rotation 10 toward an intermediate region 12, which is also flat and parallel to the back 9 and also parallel to the main surface of the front 8.

Der Abstand in axialer Richtung, also in Richtung der Drehachse 10, zwischen diesem Zwischen-Bereich 12 und der Hauptfläche der Vorderseite 8 wird überwunden durch eine Hohlkehle 7, die sich radial innerhalb des Zwischen-Bereiches 12 an diesen anschließt, und deren radial nach innen gerichtete Flanke sich nach oben bis zur Vorderseite 8 des Schneidmessers 8 erstreckt und gerundet in diese übergeht.The distance in the axial direction, ie in the direction of the axis of rotation 10, between this intermediate region 12 and the main surface of the front 8 is overcome by a groove 7, which connects radially within the intermediate region 12 to this, and the radially inward directed flank extends up to the front 8 of the cutting blade 8 and rounded into these passes.

Dagegen ist der Übergang der Hohlkehle 7 in den Zwischen-Bereich 12 nicht gerundet, sondern eckig ausgeführt mit einem Winkel 15 von vorzugsweise 20° bis 30°.In contrast, the transition of the groove 7 in the intermediate region 12 is not rounded, but executed angularly with an angle 15 of preferably 20 ° to 30 °.

Die Tiefe der Hohlkehle 7 beträgt mindestens einen Millimeter oder anders ausgedrückt mindestens 20%, besser mindestens 30% des axialen Abstandes zwischen dem Zwischen-Bereich 12 und der Rückseite 9 des Schneidmessers 1. Die radiale Erstreckung des Zwischen-Bereiches 12 ist vorzugsweise deutlich geringer als die Länge 17 der Schneidfläche 5, nämlich vorzugsweise unter 50%, besser unter 30% deren Länge 17.The depth of the groove 7 is at least one millimeter, or in other words at least 20%, better at least 30% of the axial distance between the intermediate region 12 and the back 9 of the cutting blade 1. The radial extent of the intermediate region 12 is preferably significantly less than the length 17 of the cutting surface 5, namely preferably less than 50%, better than 30% of their length 17.

Die bevorzugte Ausführungsform zeigt jedoch Figur 3a, die sich von Figur 3b dadurch unterscheidet, dass sich die Hohlkehle 7 direkt an die schräge, ebene oder hohle Schneidefläche 5 anschließt unter Bildung einer Absprungkante 22, die die Scheibe am besten von der Schneidefläche 5 ablöst.However, the preferred embodiment shows FIG. 3a that differ from FIG. 3b differs in that the groove 7 directly adjoins the oblique, flat or hollow cutting surface 5 to form a Absprandkante 22 which best separates the disc from the cutting surface 5.

Die aus den Figuren 3a, b ersichtliche Konturierung des Schneidmessers erstreckt sich über die im Wesentlichen gesamte Länge der Schneidkante 2 des Schneidmessers 1.The from the FIGS. 3a, b apparent contouring of the cutting blade extends over the substantially entire length of the cutting edge 2 of the cutting blade. 1

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Schneidmessercutting blade
22
Schneidkantecutting edge
33
Drehrichtungdirection of rotation
44
Abstanddistance
55
Schneidflächecutting surface
66
Schneidwinkelcutting angle
77
Hohlkehlefillet
88th
Vorderseitefront
99
Rückseiteback
1010
Drehachseaxis of rotation
1111
Hauptebenemain level
1212
Zwischen-BereichIntermediate range
1313
BereichArea
1414
FortschrittsrichtungProgress towards
1515
Winkelangle
1616
Dickethickness
1717
Längelength
1818
Führungsrohrguide tube
1919
Schneidgutbe cut
2020
Scheibedisc
2121
Kontaktbereichcontact area
2222
Absprungkantebounce edge

Claims (14)

Schneidmesser (1) mit einer Hauptebene (11) für Maschinen zum Aufschneiden von Lebensmitteln, insbesondere Fleisch, in Scheiben mittels eines rotierenden Schneidmessers (1), wobei das Schneidmesser (1) - eine konvex gebogene Schneidkante (2) mit zunehmendem Abstand (4) von seiner Drehachse (10) besitzt in Fortschrittsrichtung (14) des Kontaktbereiches (21) des drehenden Schneidmessers (1) zum Schneidgut (19), also mit in Drehrichtung (3) abnehmendem Abstand (4) zur Drehachse (10), insbesondere mit einer spiralförmigen Außenumfangskontur, besitzt,
dadurch gekennzeichnet, dass - die Schneidfläche (5) der Vorderseite (8) unter einem Schneidwinkel (6) von mindestens 10°, besser mindestens 20°, besser mindestens 30°, besser mindestens 33°, zur Hauptebene (11) angeordnet ist, - auf der Vorderseite (8) des Schneidmessers (1) radial gegenüber der Schneidenfläche (5) nach innen versetzt eine Hohlkehle (7) angeordnet ist. Cutting knife (1) with a main plane (11) for machines for slicing food, in particular meat, into slices by means of a rotating cutting knife (1), the cutting knife (1) - A convexly curved cutting edge (2) with increasing distance (4) from its axis of rotation (10) has in the direction of progress (14) of the contact region (21) of the rotating cutting blade (1) to the cutting material (19), ie in the direction of rotation (3) decreasing distance (4) to the axis of rotation (10), in particular with a spiral-shaped outer peripheral contour,
characterized in that the cutting surface (5) of the front side (8) is arranged at a cutting angle (6) of at least 10 °, better at least 20 °, better at least 30 °, better at least 33 °, to the main plane (11), - On the front side (8) of the cutting blade (1) radially opposite the cutting surface (5) offset inwardly a groove (7) is arranged. Schneidmesser nach Anspruch 1,
dadurch gekennzeichnet, dass - eine nicht angeschliffene Rückseite (9) aufweist, die die Hauptebene (11) des Schneidmessers (1) definiert, - die an die Schneidkante (2) anschließende Schneidfläche (5) der Vorderseite (8) in einem spitzen Schneidwinkel (6) zur Hauptebene (11) steht. Cutting knife according to claim 1,
characterized in that - has a non-ground back (9), which defines the main plane (11) of the cutting blade (1), - The adjoining the cutting edge (2) subsequent cutting surface (5) of the front side (8) in an acute cutting angle (6) to the main plane (11). Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
sich die Hohlkehle (7) entlang der gesamten Umfangslänge der Schneidkante (2) erstreckt.Cutting knife according to one of the preceding claims, characterized in that
the groove (7) extends along the entire circumferential length of the cutting edge (2). Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Hohlkehle (7) parallel zur Schneidkante (2) verläuft.Cutting knife according to one of the preceding claims, characterized in that
the groove (7) runs parallel to the cutting edge (2). Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Hohlkehle (7) unmittelbar an die schräge Schneidfläche (5) anschliesst, insbesondere unter Bildung einer z. B. scharfen Absprungkante (22) mit insbesondere einem spitzen Kantenwinkel.Cutting knife according to one of the preceding claims, characterized in that
the groove (7) directly adjoins the oblique cutting surface (5), in particular forming a z. B. sharp Absprungkante (22) in particular a sharp edge angle. Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Schneidfläche (5) eine in tangentialer Richtung betrachtet ebene oder hohle Fläche ist.Cutting knife according to one of the preceding claims, characterized in that
the cutting surface (5) is a plane or hollow surface viewed in the tangential direction. Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
der Schneidwinkel (6) maximal 50°, besser maximal 45° beträgt.Cutting knife according to one of the preceding claims, characterized in that
the cutting angle (6) is a maximum of 50 °, better than 45 °. Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das Schneidmesser (1) insgesamt eben ausgebildet ist, insbesondere plattenförmig ausgebildet ist.Cutting knife according to one of the preceding claims, characterized in that
the cutting blade (1) is generally flat, in particular plate-shaped. Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Schneidkante (2) in wenigstens einem Bereich der Umfang gezahnt ist.Cutting knife according to one of the preceding claims, characterized in that
the cutting edge (2) is toothed in at least a portion of the circumference. Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
der Übergang der Hohlkehle (7) in den radial außerhalb liegenden Bereich (12) nicht gerundet ist und insbesondere unter einem Winkel (15) von mindestens 20°, besser mindestens 30° erfolgt.Cutting knife according to one of the preceding claims, characterized in that
the transition of the groove (7) in the radially outer region (12) is not rounded and in particular at an angle (15) of at least 20 °, better at least 30 °. Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die radiale Länge (17) der Schneidfläche (5) das 0,4 bis 0,9-fache der Dicke (16) des Schneidmessers (1) beträgt.Cutting knife according to one of the preceding claims, characterized in that
the radial length (17) of the cutting surface (5) is 0.4 to 0.9 times the thickness (16) of the cutting blade (1). Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
zwischen der Schneidfläche (5) und der Hohlkehle (7) ein Zwischen-Bereich (12) der Vorderseite (8) angeordnet ist, der insbesondere eben und/oder parallel zur Hauptebene (11) liegt.Cutting knife according to one of the preceding claims, characterized in that
between the cutting surface (5) and the groove (7) an intermediate region (12) of the front side (8) is arranged, which lies in particular flat and / or parallel to the main plane (11). Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
im Zwischen-Bereich (12) zwischen Schneidfläche (5) und Hohlkehle (7) oder an der Absprungkante (22) zwischen Schneidfläche (5) und Hohlkehle (7) die Dicke (16) des Schneidmessers (1) geringer ist, maximal 2/3 so dick, besser maximal ½ so dick ist, wie im Bereich (13) radial innerhalb der Hohlkehle (7).Cutting knife according to one of the preceding claims, characterized in that
in the intermediate region (12) between the cutting surface (5) and the groove (7) or at the Absprungkante (22) between the cutting surface (5) and groove (7) the thickness (16) of the cutting blade (1) is smaller, a maximum of 2 / 3 is thicker, better than ½ as thick as in the area (13) radially inside the groove (7). Schneidmesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die Hohlkehle (7) gerundet in den radial innerhalb angrenzenden Bereich (13) der Vorderseite (8) des Schneidmessers (1) übergeht.Cutting knife according to one of the preceding claims, characterized in that
the groove (7) rounded into the radially inwardly adjacent region (13) of the front side (8) of the cutting blade (1) merges.
EP12170658.4A 2011-06-03 2012-06-04 Sickle blade Active EP2529903B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011103462A DE102011103462A1 (en) 2011-06-03 2011-06-03 cutting blade

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EP2529903A1 true EP2529903A1 (en) 2012-12-05
EP2529903B1 EP2529903B1 (en) 2014-08-06

Family

ID=46229273

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EP (1) EP2529903B1 (en)
DE (1) DE102011103462A1 (en)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2015059016A1 (en) * 2013-10-24 2015-04-30 Gea Food Solutions Germany Gmbh Cutting knife and method for sharpening
CN105026121A (en) * 2013-01-25 2015-11-04 Gea食品策划德国股份有限公司 Cutting blade having a changing cutting angle
WO2020130092A1 (en) * 2018-12-20 2020-06-25 株式会社アライドマテリアル Flat-blade cutting blade
CN113059607A (en) * 2019-11-10 2021-07-02 李华敏 Special white radish dicer and use method thereof
CN115433903A (en) * 2022-09-14 2022-12-06 玉田县新哲金属制品有限公司 Wear-resisting type junked tire decomposes uses big circular knife

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
DE102019114846A1 (en) 2019-06-03 2020-12-03 Multivac Sepp Haggenmüller Se & Co. Kg Knives, especially for slicers
DE102019134530A1 (en) * 2019-12-16 2021-06-17 Tvi Entwicklung Und Produktion Gmbh Knife, a slicing machine equipped with it and a method for operating the slicing machine

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DE29605039U1 (en) 1996-03-08 1996-05-15 Wabaema Gmbh Knife for cutting device
DE19612055A1 (en) 1996-03-27 1997-10-02 Wabaema Gmbh Blade for cutting food, especially bread
DE29800868U1 (en) * 1998-01-20 1999-05-20 Rasspe International Gmbh & Co Round knife
DE102007040350A1 (en) 2007-08-27 2009-03-05 Weber Maschinenbau Gmbh Breidenbach cutting blade

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DE29605039U1 (en) 1996-03-08 1996-05-15 Wabaema Gmbh Knife for cutting device
DE19612055A1 (en) 1996-03-27 1997-10-02 Wabaema Gmbh Blade for cutting food, especially bread
DE29800868U1 (en) * 1998-01-20 1999-05-20 Rasspe International Gmbh & Co Round knife
DE102007040350A1 (en) 2007-08-27 2009-03-05 Weber Maschinenbau Gmbh Breidenbach cutting blade

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105026121A (en) * 2013-01-25 2015-11-04 Gea食品策划德国股份有限公司 Cutting blade having a changing cutting angle
WO2015059016A1 (en) * 2013-10-24 2015-04-30 Gea Food Solutions Germany Gmbh Cutting knife and method for sharpening
WO2020130092A1 (en) * 2018-12-20 2020-06-25 株式会社アライドマテリアル Flat-blade cutting blade
JPWO2020130092A1 (en) * 2018-12-20 2021-02-15 株式会社アライドマテリアル Flat blade cutting blade
CN113059607A (en) * 2019-11-10 2021-07-02 李华敏 Special white radish dicer and use method thereof
CN115433903A (en) * 2022-09-14 2022-12-06 玉田县新哲金属制品有限公司 Wear-resisting type junked tire decomposes uses big circular knife

Also Published As

Publication number Publication date
DE102011103462A1 (en) 2012-12-06
EP2529903B1 (en) 2014-08-06

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