EP2836340B1 - Cutting blade - Google Patents

Cutting blade Download PDF

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Publication number
EP2836340B1
EP2836340B1 EP13714858.1A EP13714858A EP2836340B1 EP 2836340 B1 EP2836340 B1 EP 2836340B1 EP 13714858 A EP13714858 A EP 13714858A EP 2836340 B1 EP2836340 B1 EP 2836340B1
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EP
European Patent Office
Prior art keywords
formations
cutting blade
cutting
blade according
area
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EP13714858.1A
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German (de)
French (fr)
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EP2836340A1 (en
Inventor
Günther Weber
Gerd Lischinski
Carsten Reinsch
Steffen Martens
Ulrich PASEL
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Weber Maschinenbau GmbH Breidenbach
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Weber Maschinenbau GmbH Breidenbach
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Classifications

    • 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
    • B26D1/25—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 non-circular cutting member
    • B26D1/26—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 non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • 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
    • B26D1/25—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 non-circular cutting member
    • B26D1/26—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 non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/28—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 non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • 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
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • 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
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9394—Helical tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9403—Disc type

Definitions

  • the invention relates to a rotationally drivable cutting knife for machines for slicing food products, in particular for high-speed slicers, which is fastened to a drive shaft with the aid of a mounting area surrounding an axis of rotation and which has a predominantly flat distance area outside the mounting area and within a cutting area.
  • a cutting knife of this type is from the DE 10 2009 006 912 known.
  • the circular cutting knife has raised areas in the cutting area which are intended to reduce the friction between the knife surface and the food slices.
  • the elevations are designed as dome-shaped or spherical segment-shaped ribs.
  • the separated food slice should only touch the ridges of the ribs during the cutting process, which reduces the friction between the food product and the knife.
  • the surveys are located directly adjacent to the cutting edge.
  • the DE 10 2009 030 550 A1 discloses a cutting knife in which a cavity is formed between a base body and a stiffening body. In order to be able to form this cavity, the central fastening area merges outwards into a bulge which is raised in one direction only and is then covered by the stiffening body.
  • Knives of the type mentioned rotate at a rotational speed of at least 1500 revolutions per minute and must be as stiff and well balanced as possible to produce a flawless material to be cut.
  • the elevations are held with plug-like fastening sections which are anchored in the knife. As a result, there is no substantial stiffening of the knife, although the elevations reinforce it at least in the cutting area.
  • the object of the invention is to increase the stiffness in cutting knives of the type mentioned at the beginning while minimizing the weight and to achieve good cutting quality.
  • This object is achieved according to the invention in that there are embossed, mutually recessed and raised formations in the distance region.
  • embossing the formations within the spacing area the structure is strengthened, which, together with the shape of the form, results in a higher rigidity of the cutting knife.
  • the formations are in the distance range of the cutting knife, that is outside the Cutting area, whereby they can be shaped so that they do not touch the food product or the slices to be separated from it. ever In terms of shape, the formations can also be used to generate local air vortices in the rotating knife in order to reduce the deflection of cut food slices.
  • the formations can also be used to optimize the balancing. Due to the mutual shaping, dynamic unbalance is almost avoided. At the same time, less planning is achieved.
  • the structural hardening that takes place through the stamping can also contribute to a considerable reduction in the weight of the cutting knife, since the material thickness can be reduced by an increased rigidity of the knife.
  • the embossed shapes at most have the same material thickness as the surrounding areas of the distance area. By embossing the formations, a reduction in the material thickness can also be achieved. This applies in particular to the deep drawing of the formations.
  • the shape of the formations can be chosen in many different ways. If you want to achieve the dimple effect known from golf balls with the cutting knife, the shapes can be circular. If the formations should have an elongated shape, hollows are recommended. These can have a flat base to avoid sharp kinks, edges or breaks.
  • These shapes can be oriented in the radial direction, which favors the radial air flow already mentioned.
  • the formations it is possible to shape the formations as elongated troughs, grooves or ribs which extend in the radial direction.
  • the radial alignment increases the rigidity compared to the bend.
  • the formations can be arranged alternately over the circumference to the inner and to the outer knife side, so that - seen in the circumferential direction - a mountain-valley pattern results.
  • the flat distance area is somewhat dissolved by the alternating shapes merging and a wave pattern being formed in the circumferential direction. It is precisely this wave pattern that causes the knife to be very stiff against deflection.
  • the invention can be applied not only to a circular knife, but also to a sickle knife.
  • the formations can optionally be used specifically for dynamic balancing.
  • a cutting machine knife in particular a cutter knife, is known in which depressions and / or elevations are provided radially one behind the other. They are not in the cutting area, but directly behind them in order to come into contact with the shredded material.
  • the depressions and elevations should therefore improve the reduction performance, increase the protein digestion and achieve a more intensive emulsification of the material to be cut. Furthermore, a better swirling of meat should be achieved through the depressions and / or elevations.
  • the depressions and / or elevations thus serve analogously to DE 10 2009 006 912 to come into contact with the material to be cut, which is not the object of the invention.
  • the cutting knife 10 shown is intended for machines (not shown) for slicing food products, in particular for high-speed slicers. It has a mounting area 11 which surrounds an axis of rotation 12, the latter being guided centrally through a circular bore 13.
  • the cutting knife 10 is fastened on one side with the aid of the assembly area 11 to a drive shaft, not shown. In the present case, it is designed as a sickle knife, and its characteristics correspond to those of DE 10 2007 040 350 , This publication goes back to the same applicant.
  • Such sickle knives have a cutting edge 14 which deviates from a circular shape in that it revolves outward in a spiral about the axis of rotation 12.
  • the cutting edge begins at an incision 15 and ends at a radial end edge 16.
  • the cutting edge 14 is flanked by a cutting area 17.
  • a spacing area 18 extends between the assembly area 11 and the cutting area 17.
  • embossed formations 19 which are raised in relation to the plane of the spacing area.
  • the embossing takes place primarily by deep drawing, as a result of which the formations are solidified in their structure and have a somewhat lower material thickness d than the surrounding, non-embossed distance region 18.
  • the formations are circular, the diameter of the circles becoming smaller in the direction of the axis of rotation 12.
  • the shapes are alternately raised on the inner and outer side of the knife, so that - figuratively speaking - mountains and valleys alternate.
  • the formations have a flat base, but it is also conceivable to make the base uneven, for example bulbous.
  • the formations can be arranged one behind the other in the radial direction, with “mountains” and “valleys” alternating in the radial direction.
  • the same also applies in the circumferential direction, as is the case, for example, from the sector section of Figure 2 can be seen.
  • embossing the troughs not only is a high level of rigidity achieved for the cutting knife as a whole, but also a structural consolidation within the deformations. This also leads to less knocking of the knife.
  • embossing the troughs in alternating directions inwards and outwards the dynamic balancing of the knife is also ensured.
  • the formations are provided with grooves 21, which each establish the connection to the plane of the distance region 18 or the base 20. These throats can become smaller and flatter in the direction of the axis of rotation in order to keep the rigidity from the center of the knife to the cutting edge.
  • the circular shapes can achieve a flow effect in the same way as the dimples on the golf ball. Air friction is reduced by the secondary angle. Air vortices reduce the distraction of interleavers used in portioning. The same applies to the storage of the discs.
  • the cutting knife becomes considerably stiffer, which means that the material thickness and the weight of the knife can be reduced. The same applies to the counterweight.
  • the formations can also be used for dynamic balancing of the cutting knife.
  • the depth, but also the design of the formations can be varied during the embossing.
  • the Figure 3 also shows the top view of a sickle knife.
  • the formations 19 are not circular, but elongated troughs which extend in the radial direction.
  • the troughs have a flat base, but they can also be bulbous, the bulge being able to extend both to the inside and to the outside of the knife.
  • the shapes are raised alternately to the inside and outside of the knife. They are arranged one behind the other in the radial direction, and not only in the radial direction, but also in the circumferential direction alternate inward and outward elevations.
  • the embossed image is repeated in the circumferential direction from the end edge 16 in the direction of the incision 15, the dimensions being analogous to the hole pattern of Figure 1 become increasingly smaller.
  • the formations are therefore the largest near the end edge 16 and the smallest at the other end.
  • the formations are wider at their radially outer end than at their radially inner end.
  • Formations adjacent to the assembly area 11 or to the cutting area 17 each have a straight corner edge 22.
  • the formations 19 also become deeper in the radial direction, the depth being limited by the fact that the formation should not touch the material to be cut during the cutting process.
  • the cutting area 17 forms an angle ⁇ with the plane of the distance area 18.
  • the Figures 5 and 6 show a further embodiment of the invention.
  • the formations 19 extend continuously from the cutting area 17 to the assembly area 11. They are shaped as radial, elongated, continuous troughs. They are raised above the level of the distance area and change in the circumferential direction Formations protruding from the inside and outside of the knife, so that again a mountain-valley shape results in the circumferential direction.
  • the formations 19 each have straight end edges 22 at their radially inner and at the radially outer end.

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

Description

Die Erfindung bezieht sich auf ein rotierend antreibbares Schneidmesser für Maschinen zum Aufschneiden von Lebensmittelprodukten, insbesondere für Hochgeschwindigkeits-slicer, das mit Hilfe eines eine Drehachse umgebenden Montagebereiches an einer Antriebswelle befestigt ist, und außerhalb des Montagebereichs und innerhalb eines Schneidenbereichs einen vornehmlich ebenen Distanzbereich aufweist.The invention relates to a rotationally drivable cutting knife for machines for slicing food products, in particular for high-speed slicers, which is fastened to a drive shaft with the aid of a mounting area surrounding an axis of rotation and which has a predominantly flat distance area outside the mounting area and within a cutting area.

Ein Schneidmesser dieser Art ist aus der DE 10 2009 006 912 bekannt. Das kreisförmige Schneidmesser verfügt im Schneidenbereich über Erhebungen, die zur Reduzierung der Reibung zwischen der Messeroberfläche und den Lebensmittelscheiben dienen sollen. Die Erhebungen sind als kalottenförmige oder kugelsegmentförmige Rippen ausgebildet. Die abgetrennte Lebensmittelscheibe soll beim Schneidvorgang lediglich die Kuppen der Rippen berühren, wodurch die Reibung zwischen dem Lebensmittelprodukt und dem Messer reduziert wird. Die Erhebungen finden sich zu diesem Zweck unmittelbar benachbart zur Schneide.A cutting knife of this type is from the DE 10 2009 006 912 known. The circular cutting knife has raised areas in the cutting area which are intended to reduce the friction between the knife surface and the food slices. The elevations are designed as dome-shaped or spherical segment-shaped ribs. The separated food slice should only touch the ridges of the ribs during the cutting process, which reduces the friction between the food product and the knife. For this purpose, the surveys are located directly adjacent to the cutting edge.

Die DE 10 2009 030 550 A1 offenbart ein Schneidmesser, bei dem zwischen einem Grundkörper und einem Versteifungskörper ein Hohlraum ausgebildet ist. Um diesen Hohlraum ausbilden zu können, geht der zentrale Befestigungsbereich nach außen in eine nur in eine Richtung erhabene Auswölbung über, die dann durch den Versteifungskörper abgedeckt wird.The DE 10 2009 030 550 A1 discloses a cutting knife in which a cavity is formed between a base body and a stiffening body. In order to be able to form this cavity, the central fastening area merges outwards into a bulge which is raised in one direction only and is then covered by the stiffening body.

Messer der genannten Art rotieren mit einer Drehgeschwindigkeit von wenigstens 1500 Umdrehungen pro Minute und müssen zum Erzeugen eines makellosen Schneidguts möglichst steif und bestens ausgewuchtet sein. Beim bekannten Messer werden die Erhebungen mit stopfenartig ausgebildeten Befestigungsabschnitten gehalten, die im Messer verankert sind. Hierdurch erfolgt keine wesentliche Versteifung des Messers, wenngleich die Erhebungen es zumindest im Schneidenbereich verstärken.Knives of the type mentioned rotate at a rotational speed of at least 1500 revolutions per minute and must be as stiff and well balanced as possible to produce a flawless material to be cut. In the known knife, the elevations are held with plug-like fastening sections which are anchored in the knife. As a result, there is no substantial stiffening of the knife, although the elevations reinforce it at least in the cutting area.

Der Erfindung liegt die Aufgabe zugrunde, bei Schneidmessern der eingangs genannten Art bei Minimierung des Gewichts die Steifigkeit zu erhöhen und eine gute Schneidqualität zu erzielen.The object of the invention is to increase the stiffness in cutting knives of the type mentioned at the beginning while minimizing the weight and to achieve good cutting quality.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass im Distanzbereich geprägte, wechselseitig vertiefte und erhabene Ausformungen vorhanden sind. Durch das Prägen von Ausformungen innerhalb des Distanzbereichs erfolgt eine Gefügeverfestigung, die gleichzeitig mit der Gestalt der Formung eine höhere Steifigkeit des Schneidmessers zur Folge hat. Die Ausformungen befinden sich im Distanzbereich des Schneidmessers, also außerhalb des Schneidenbereichs, wodurch sie so geformt werden können, dass sie weder das Lebensmittelprodukt noch die davon abzutrennenden Scheiben berühren. Je nach Gestalt können die Ausformungen auch dazu dienen, beim rotierenden Messer vornehmlich lokale Luftwirbel zu erzeugen, um hierdurch das Ablenken von abgeschnittenen Lebensmittelscheiben zu reduzieren. Nachdem derartige Schneidmesser statisch und dynamisch auszuwuchten sind, können die Ausformungen auch zur Optimierung der Auswuchtungen herangezogen werden. Durch das wechselseitige Ausformen wird eine dynamische Unwucht nahezu vermieden. Gleichzeitig wird ein geringerer Planschlag erreicht.This object is achieved according to the invention in that there are embossed, mutually recessed and raised formations in the distance region. By embossing the formations within the spacing area, the structure is strengthened, which, together with the shape of the form, results in a higher rigidity of the cutting knife. The formations are in the distance range of the cutting knife, that is outside the Cutting area, whereby they can be shaped so that they do not touch the food product or the slices to be separated from it. ever In terms of shape, the formations can also be used to generate local air vortices in the rotating knife in order to reduce the deflection of cut food slices. After such cutting knives have to be balanced statically and dynamically, the formations can also be used to optimize the balancing. Due to the mutual shaping, dynamic unbalance is almost avoided. At the same time, less planning is achieved.

Schließlich kann die durch das Prägen erfolgende Gefügeverfestigung noch zu einer erheblichen Gewichtsreduzierung des Schneidmessers beitragen, da durch eine erhöhte Steifigkeit des Messers die Materialstärke verringert werden kann.Finally, the structural hardening that takes place through the stamping can also contribute to a considerable reduction in the weight of the cutting knife, since the material thickness can be reduced by an increased rigidity of the knife.

Bei einer bevorzugten Ausführungsform ist vorgesehen, dass die geprägten Ausformungen allenfalls die gleiche Materialstärke aufweisen, wie die umgebenden Bereiche des Distanzbereiches. Durch das Prägen der Ausformungen kann auch eine Verringerung der Materialstärke erreicht werden. Dies gilt insbesondere beim Tiefziehen der Ausformungen.In a preferred embodiment it is provided that the embossed shapes at most have the same material thickness as the surrounding areas of the distance area. By embossing the formations, a reduction in the material thickness can also be achieved. This applies in particular to the deep drawing of the formations.

Die Gestalt der Ausformungen kann mannigfaltig gewählt werden. Sofern man bei dem Schneidmesser den von Golfbällen bekannten Dimpel-Effekt erzielen will, können die Ausformungen kreisförmig gestaltet sein. Sofern die Ausformungen eine längliche Gestalt haben sollen, sind Mulden empfehlenswert. Diese können einen ebenen Grund haben, um scharfe Knicke, Kanten oder Brüche zu vermeiden.The shape of the formations can be chosen in many different ways. If you want to achieve the dimple effect known from golf balls with the cutting knife, the shapes can be circular. If the formations should have an elongated shape, hollows are recommended. These can have a flat base to avoid sharp kinks, edges or breaks.

Diese Ausformungen können in Radialrichtung orientiert sein, wodurch die schon angesprochene radiale Luftströmung begünstigt wird.These shapes can be oriented in the radial direction, which favors the radial air flow already mentioned.

Dabei ist es möglich, die Ausformungen als in Radialrichtung sich erstreckende, längliche Mulden, Rillen oder Rippen zu formen. Die radiale Ausrichtung erhöht die Steifigkeit gegenüber der Biegung.It is possible to shape the formations as elongated troughs, grooves or ribs which extend in the radial direction. The radial alignment increases the rigidity compared to the bend.

Auch ist es möglich, in Radialrichtung mehrere Ausformungen hintereinander anzuordnen, wobei diese Ausformungen an ihrem radial äußeren Ende jeweils breiter sein können, als innen. Damit ergibt sich eine gewisse Keilform dieser Ausformungen.It is also possible to arrange a plurality of formations one behind the other in the radial direction, wherein these formations can each be wider at their radially outer end than inside. This results in a certain wedge shape of these formations.

In diesem Zusammenhang kann es auch vorteilhaft sein, die Ausformungen in Radialrichtung hin tiefer zu gestalten, wodurch die radiale Luftströmung gefördert und eventuell eine gewünschte Verwirbelung erzielt wird.In this context, it can also be advantageous to make the shapes deeper in the radial direction, thereby promoting the radial air flow and possibly achieving a desired swirl.

Die Ausformungen können über den Umfang alternierend zur inneren und zur äußeren Messerseite hin angeordnet sein, sodass sich - in Umfangsrichtung gesehen - ein Berg-Tal-Muster ergibt. Grundsätzlich ist es denkbar, dass der ebene Distanzbereich hierdurch etwas aufgelöst wird, indem die alternierenden Ausformungen ineinander übergehen und sich in Umfangrichtung ein Wellenmuster einstellt. Gerade dieses Wellenmuster bedingt eine sehr hohe Steifigkeit des Messers gegen Durchbiegung.The formations can be arranged alternately over the circumference to the inner and to the outer knife side, so that - seen in the circumferential direction - a mountain-valley pattern results. In principle, it is conceivable that the flat distance area is somewhat dissolved by the alternating shapes merging and a wave pattern being formed in the circumferential direction. It is precisely this wave pattern that causes the knife to be very stiff against deflection.

Um den bereits eingangs angesprochenen Abstand zwischen dem Schneidgut einerseits und dem Messer andererseits zu erreichen, ist es geboten, dass der Schneidenbereich gegenüber der Ebene des Distanzbereichs einen Winkel (α) einschließt.In order to achieve the distance already mentioned at the beginning between the material to be cut on the one hand and the knife on the other hand, it is necessary for the cutting area to form an angle (α) with respect to the plane of the distance area.

Die Erfindung kann nicht nur bei einem Kreismesser, sondern auch bei einem Sichelmesser Anwendung finden. Die Ausformungen können gegebenenfalls gezielt für das dynamische Auswuchten herangezogen werden.The invention can be applied not only to a circular knife, but also to a sickle knife. The formations can optionally be used specifically for dynamic balancing.

Aus der DE 10 2007 026 321 ist ein Schneidmaschinenmesser, insbesondere ein Kuttermesser bekannt, bei dem radial hintereinander Vertiefungen und/oder Erhöhungen vorgesehen sind. Sie befinden sich nicht im Schneidenbereich, aber unmittelbar dahinter, um mit dem zerkleinerten Gut in Kontakt zu gelangen. Die Vertiefungen und Erhöhungen sollen demzufolge die Verkleinerungsleistung verbessern, den Eiweißaufschluss zu steigern und eine intensivere Emulgierung des Schneidgutes zu erreichen. Weiterhin sollen durch die Vertiefungen und/oder Erhöhungen eine bessere Brätverwirbelung erreicht werden. Damit dienen die Vertiefungen und/oder Erhöhungen analog zur DE 10 2009 006 912 dazu, mit dem Schneidgut in Kontakt zu treten, was bei der Erfindung nicht bezweckt wird.From the DE 10 2007 026 321 a cutting machine knife, in particular a cutter knife, is known in which depressions and / or elevations are provided radially one behind the other. They are not in the cutting area, but directly behind them in order to come into contact with the shredded material. The depressions and elevations should therefore improve the reduction performance, increase the protein digestion and achieve a more intensive emulsification of the material to be cut. Furthermore, a better swirling of meat should be achieved through the depressions and / or elevations. The depressions and / or elevations thus serve analogously to DE 10 2009 006 912 to come into contact with the material to be cut, which is not the object of the invention.

Ausführungsformen der Erfindung sind nachfolgend anhand von Zeichnungen dargestellt. Es zeigen:

Figur 1:
die Draufsicht auf ein erfindungsgemäßes Sichelmesser,
Figur 2:
einen Sektorausschnitt der Sichelmesser von Figur 1 in perspektivischer Darstellung,
Figur 3:
eine Draufsicht auf eine weitere Ausführungsform eines erfindungsgemäßen Sichelmessers,
Figur 4:
einen Sektorausschnitt der Schneidmesser von Figur 3,
Figur 5:
eine Draufsicht auf eine dritte Ausführungsform eines erfindungsgemäßen Schneidmessers, und
Figur 6:
einen Sektorausschnitt des Schneidmessers von Figur 5.
Embodiments of the invention are shown below with reference to drawings. Show it:
Figure 1:
the top view of a sickle knife according to the invention,
Figure 2:
a sector section of the sickle knife of Figure 1 in perspective,
Figure 3:
2 shows a plan view of a further embodiment of a sickle knife according to the invention,
Figure 4:
a sector section of the cutting knife of Figure 3 .
Figure 5:
a plan view of a third embodiment of a cutting knife according to the invention, and
Figure 6:
a sector section of the cutting knife of Figure 5 ,

Das in Figur 1 gezeigte Schneidmesser 10 ist für nicht gezeigte Maschinen zum Aufschneiden von Lebensmittelprodukten, insbesondere für Hochgeschwindigkeitsslicer vorgesehen. Es verfügt über einen Montagebereich 11, der eine Drehachse 12 umgibt, wobei letztere mittig durch eine Kreisbohrung 13 geführt ist.
Das Schneidmesser 10 ist mit Hilfe des Montagebereichs 11 an eine nichtgezeigten Antriebswelle einseitig befestigt. Im vorliegenden Fall ist es als Sichelmesser ausgebildet, es entspricht mit seinen Merkmalen denjenigen der DE 10 2007 040 350 . Diese Druckschrift geht auf den gleichen Anmelder zurück.This in Figure 1 The cutting knife 10 shown is intended for machines (not shown) for slicing food products, in particular for high-speed slicers. It has a mounting area 11 which surrounds an axis of rotation 12, the latter being guided centrally through a circular bore 13.
The cutting knife 10 is fastened on one side with the aid of the assembly area 11 to a drive shaft, not shown. In the present case, it is designed as a sickle knife, and its characteristics correspond to those of DE 10 2007 040 350 , This publication goes back to the same applicant.

Derartige Sichelmesser verfügen über eine Schneidkante 14, die von einer Kreisform abweicht, indem sie nach außen in einer Spirale um die Drehachse 12 umläuft. Die Schneidkante beginnt bei einem Einschnitt 15 und endet an einer radialen Schlusskante 16. Die Schneidkante 14 wird flankiert von einem Schneidenbereich 17.
Zwischen dem Montagebereich 11 und dem Schneidenbereich 17 erstreckt sich ein Distanzbereich 18. Dieser ist gemäß der Erfindung mit geprägten Ausformungen 19 versehen, die gegenüber der Ebene des Distanzbereichs erhaben sind. Das Prägen geschieht vornehmlich durch Tiefziehen, wodurch die Ausformungen in ihrem Gefüge verfestigt werden, und eine etwas geringere Materialstärke d aufweisen wie der umgebende, nicht geprägte Distanzbereich 18.
Die Ausformungen sind kreisförmig, wobei der Durchmesser der Kreise in Richtung auf die Drehachse 12 hin kleiner wird.Such sickle knives have a cutting edge 14 which deviates from a circular shape in that it revolves outward in a spiral about the axis of rotation 12. The cutting edge begins at an incision 15 and ends at a radial end edge 16. The cutting edge 14 is flanked by a cutting area 17.
A spacing area 18 extends between the assembly area 11 and the cutting area 17. According to the invention, this is provided with embossed formations 19 which are raised in relation to the plane of the spacing area. The embossing takes place primarily by deep drawing, as a result of which the formations are solidified in their structure and have a somewhat lower material thickness d than the surrounding, non-embossed distance region 18.
The formations are circular, the diameter of the circles becoming smaller in the direction of the axis of rotation 12.

Die Ausformungen sind alternierend zur inneren und zur äußeren Messerseite hin erhaben, sodass sich - bildlich gesprochen - Berge und Täler abwechseln. Im vorliegenden Fall verfügen die Ausformungen über einen ebenen Grund, es ist allerdings denkbar, den Grund auch uneben, zum Beispiel bauchig zu gestalten.The shapes are alternately raised on the inner and outer side of the knife, so that - figuratively speaking - mountains and valleys alternate. In the present case, the formations have a flat base, but it is also conceivable to make the base uneven, for example bulbous.

Wie gezeigt, können die Ausformungen in Radialrichtung hintereinander angeordnet sein, wobei sich auch hier in Radialrichtung "Berge" und "Täler" abwechseln. Das gleiche gilt auch in Umfangsrichtung, wie dies beispielsweise aus dem Sektorausschnitt von Figur 2 ersichtlich ist.As shown, the formations can be arranged one behind the other in the radial direction, with "mountains" and "valleys" alternating in the radial direction. The same also applies in the circumferential direction, as is the case, for example, from the sector section of Figure 2 can be seen.

Durch das Prägen der Mulden wird nicht nur eine hohe Steifigkeit des Schneidmessers insgesamt erreicht, sondern auch eine Gefügeverfestigung innerhalb der Verformungen. Dies führt auch zu einem geringeren Planschlag des Messers. Durch das Prägen der Mulden in abwechselnder Richtung nach innen und außen wird auch die dynamische Auswuchtung des Messers sichergestellt.By embossing the troughs, not only is a high level of rigidity achieved for the cutting knife as a whole, but also a structural consolidation within the deformations. This also leads to less knocking of the knife. By embossing the troughs in alternating directions inwards and outwards, the dynamic balancing of the knife is also ensured.

Die Ausformungen sind mit Kehlen 21 versehen, die jeweils den Anschluss an die Ebene des Distanzbereichs 18, beziehungsweise den Grund 20 herstellen. Diese Kehlen können in Richtung auf die Drehachse hin kleiner und flacher werden, um die Steifigkeit von der Messermitte zur Schneide hin gleichzuhalten.The formations are provided with grooves 21, which each establish the connection to the plane of the distance region 18 or the base 20. These throats can become smaller and flatter in the direction of the axis of rotation in order to keep the rigidity from the center of the knife to the cutting edge.

Die kreisförmigen Ausformungen können in gleicher Weise einen Strömungseffekt erzielen, wie die Vertiefungen (Dimpels) beim Golfball. Durch den Sekundärwinkel verringert sich die Luftreibung. Luftwirbel bewirken eine reduzierte Ablenkung von beim Portionieren verwendeten Zwischenblättern (Interleaver). Das gleiche gilt auch für die Ablage der Scheiben.The circular shapes can achieve a flow effect in the same way as the dimples on the golf ball. Air friction is reduced by the secondary angle. Air vortices reduce the distraction of interleavers used in portioning. The same applies to the storage of the discs.

Durch das Verwirbeln von Luftschichten ergibt sich eine vorteilhafte Strömung.The swirling of air layers results in an advantageous flow.

Durch das Prägen der Ausformungen wird das Schneidmesser erheblich steifer, wodurch die Materialstärke und das Gewicht des Messers reduziert werden können. Das gleiche gilt für das Gegengewicht.By embossing the formations, the cutting knife becomes considerably stiffer, which means that the material thickness and the weight of the knife can be reduced. The same applies to the counterweight.

Schließlich können die Ausformungen noch zum dynamischen Auswuchten des Schneidmessers herangezogen werden. Hierzu kann die Tiefe, aber auch die Gestaltung der Ausformungen während des Prägens variiert werden.Finally, the formations can also be used for dynamic balancing of the cutting knife. For this purpose, the depth, but also the design of the formations can be varied during the embossing.

Die Ausführungsformen der Figuren 3 bis 6 entsprechen im Wesentlichen derjenigen der Figuren 1 und 2. Zur Vermeidung von Wiederholungen werden für gleichartige Bezeichnungen die gleichen Bezugszeichen verwendet. Es wird nur noch auf die Unterschiede eingegangen.The embodiments of the Figures 3 to 6 correspond essentially to that of Figures 1 and 2 , To avoid repetitions, the same reference symbols are used for the same designations. Only the differences are dealt with.

Die Figur 3 zeigt gleichfalls die Draufsicht auf ein Sichelmesser. Im Unterschied zu den Ausführungsformen der Figuren 1 und 2 sind die Ausformungen 19 nicht kreisförmig gestaltet, sondern längliche Mulden, die sich in Radialrichtung erstrecken. Die Mulden weisen einen ebenen Grund auf, sie können aber auch bauchig sein, wobei sich die Ausbauchung sowohl zur Innen- als auch zur Außenseite des Messers erstrecken kann.The Figure 3 also shows the top view of a sickle knife. In contrast to the embodiments of the Figures 1 and 2 the formations 19 are not circular, but elongated troughs which extend in the radial direction. The troughs have a flat base, but they can also be bulbous, the bulge being able to extend both to the inside and to the outside of the knife.

Die Ausformungen sind alternierend zur Innen- und Außenseite des Messers erhaben. Sie sind in Radialrichtung hintereinander angeordnet, wobei sich nicht nur in Radialrichtung, sondern auch in Umfangsrichtung jeweils nach innen und nach außen erhabene Ausformungen abwechseln.The shapes are raised alternately to the inside and outside of the knife. They are arranged one behind the other in the radial direction, and not only in the radial direction, but also in the circumferential direction alternate inward and outward elevations.

Das Prägebild wiederholt sich von der Schlusskante 16 in Umfangsrichtung in Richtung des Einschnittes 15, wobei die Abmessungen analog zu dem Lochbild von Figur 1 zunehmend geringer werden. Die Ausformungen sind deshalb in der Nähe der Schlusskante 16 am größten und am anderen Ende hin am kleinsten. Gleichermaßen sind die Ausformungen an ihrem radialen äußeren Ende jeweils breiter als an ihrem radialen inneren.The embossed image is repeated in the circumferential direction from the end edge 16 in the direction of the incision 15, the dimensions being analogous to the hole pattern of Figure 1 become increasingly smaller. The formations are therefore the largest near the end edge 16 and the smallest at the other end. Likewise, the formations are wider at their radially outer end than at their radially inner end.

Hinzu kommt noch, dass bei der Ausführungsform der Figur 3 jeweils bei dem Montagebereich 11 beziehungsweise bei dem Schneidenbereich 17 benachbarte Ausformungen eine gerade Eckkante 22 haben.In addition, in the embodiment of the Figure 3 Formations adjacent to the assembly area 11 or to the cutting area 17 each have a straight corner edge 22.

Die Ausformungen 19 werden auch in Radialrichtung tiefer, wobei die Tiefe dadurch begrenzt ist, dass beim Schneidvorgang die Ausformung das Schneidgut nicht berühren soll.The formations 19 also become deeper in the radial direction, the depth being limited by the fact that the formation should not touch the material to be cut during the cutting process.

Der Schneidenbereich 17 schließt mit der Ebene des Distanzbereichs 18 einen Winkel α ein.The cutting area 17 forms an angle α with the plane of the distance area 18.

Die Figuren 5 und 6 zeigen eine weitere Ausführungsform der Erfindung. Die Ausformungen 19 erstrecken sich in diesem Fall durchgehend vom Schneidenbereich 17 zum Montagebereich 11. Sie sind als radiale, längliche, durchgehende Mulden geformt. Sie sind gegenüber der Ebene des Distanzbereiches erhaben und in Umfangsrichtung wechseln sich zur Messerinnen- und zur Messeraußenseite erhabene Ausformungen ab, sodass sich wiederum in Umfangsrichtung eine Berg-Tal-Form ergibt. Gerade bei dieser Ausführungsform ist es denkbar, die Berg- und Talformationen zu einer Wellenformation zu machen, worauf die in Figur 5 noch ersichtlichen, ebenen Stege 23 des Distanzbereiches verschwinden.The Figures 5 and 6 show a further embodiment of the invention. In this case, the formations 19 extend continuously from the cutting area 17 to the assembly area 11. They are shaped as radial, elongated, continuous troughs. They are raised above the level of the distance area and change in the circumferential direction Formations protruding from the inside and outside of the knife, so that again a mountain-valley shape results in the circumferential direction. Especially in this embodiment, it is conceivable to make the mountain and valley formations into a wave formation, whereupon the in Figure 5 still visible, flat webs 23 of the distance area disappear.

Die Ausformungen 19 verfügen bei dieser Ausführungsform jeweils an ihrem radial inneren als auch an dem radial äußeren Ende über gerade Endkanten 22.In this embodiment, the formations 19 each have straight end edges 22 at their radially inner and at the radially outer end.

Claims (15)

  1. Rotationally drivable cutting blade for machines for cutting up food products, in particular for high-speed slicers, which is attached to a drive shaft with the aid of an assembly area (11) surrounding a rotational axis (12) and has a primarily planar spacing area (18) outside of the assembly area (11) and inside of a cutting area (17), characterised in that, in the spacing area (18), there are embossed, alternately sunken and raised formations (19).
  2. Cutting blade according to claim 1, characterised in that the embossed formations (19) at best have the same material thickness (d) as the surrounding areas of the spacing area (18).
  3. Cutting blade according to one of the preceding claims, characterised in that the formations (19) are circular.
  4. Cutting blade according to one of the preceding claims, characterised in that the formations (19) are designed as troughs with a planar base (20).
  5. Cutting blade according to one of the preceding claims, characterised in that the formations (19) are oriented in the radial direction.
  6. Cutting blade according to one of the preceding claims, characterised in that the formations (19) have a longitudinal design extending in the radial direction.
  7. Cutting blade according to one of the preceding claims, characterised in that several formations (19) extend one after another in the radial direction.
  8. Cutting blade according to one the preceding claims, characterised in that the formations (19) are wider at their radially outer end than at their radially inner end.
  9. Cutting blade according to one of the preceding claims, characterised in that the formations (19) are deeper in the radial direction.
  10. Cutting blade according to one of the preceding claims, characterised in that the formations (19) are raised circumferentially in an alternating manner to the inner and outer blade side.
  11. Cutting blade according to claim 7, characterised in that the radially consecutive formations (19) are raised alternately to the inside and outside of the cutting blade (10).
  12. Cutting blade according to one of the preceding claims, characterised in that the formations (19) are formed by deep drawing.
  13. Cutting blade according to one of the preceding claims, characterised in that the cutting area (17) forms an angle (α) with respect to the plane of the spacing area.
  14. Cutting blade according to one of the preceding claims, characterised in that the cutting blade (10) is a sickle blade which, at its radially outer circumference, has a cutting edge (14) which deviates from the circular shape, and revolves in particular like a spiral around the rotational axis (12).
  15. Cutting blade according to claim 14, characterised in that the cutting edge (14) lies in a cutting plane running perpendicular to the rotational axis (12), wherein the cutting edge (14) forms the radially outer end of a cutting surface.
EP13714858.1A 2012-04-11 2013-04-05 Cutting blade Active EP2836340B1 (en)

Applications Claiming Priority (2)

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DE102012007250A DE102012007250A1 (en) 2012-04-11 2012-04-11 cutting blade
PCT/EP2013/001020 WO2013152842A1 (en) 2012-04-11 2013-04-05 Cutting blade

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EP2836340B1 true EP2836340B1 (en) 2020-02-26

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DE102012004960A1 (en) 2012-03-14 2013-09-19 GEA CFS Bühl GmbH Cutting knife with a means for generating an air flow
DE102014118164A1 (en) * 2014-12-08 2016-06-09 Weber Maschinenbau Gmbh Breidenbach cutting blade
DE102016108274A1 (en) * 2016-05-04 2017-11-09 Maja-Maschinenfabrik Hermann Schill Gmbh & Co. Kg Cutting knife for portioning or cutting device
US11629322B2 (en) 2016-12-05 2023-04-18 Global Life Sciences Solutions Usa Llc Impeller including one or more turbulators, for a bioreactor system
DE102018111762A1 (en) * 2018-05-16 2019-11-21 Weber Maschinenbau Gmbh Breidenbach Process for coating cutting knives
CN109203026B (en) * 2018-12-03 2023-08-22 长江大学 Rotary slicing machine
DE102019114846A1 (en) * 2019-06-03 2020-12-03 Multivac Sepp Haggenmüller Se & Co. Kg Knives, especially for slicers
DE102020101898A1 (en) 2020-01-27 2021-07-29 Be Maschinenmesser Gmbh & Co. Kg Cutting machine knives for food production
DE102022113920A1 (en) * 2022-06-02 2023-12-07 Multivac Sepp Haggenmüller Se & Co. Kg Knife, cutting unit and slicing machine
MX2022009316A (en) 2022-07-28 2024-01-29 Heat Control Inc Apparatus and method for cutting and washing products of generally elongated shape with vortex generation system.

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WO2013152842A1 (en) 2013-10-17
US20150135926A1 (en) 2015-05-21
EP2836340A1 (en) 2015-02-18

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