EP2511058B1 - Method for cutting food - Google Patents

Method for cutting food Download PDF

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Publication number
EP2511058B1
EP2511058B1 EP20120164048 EP12164048A EP2511058B1 EP 2511058 B1 EP2511058 B1 EP 2511058B1 EP 20120164048 EP20120164048 EP 20120164048 EP 12164048 A EP12164048 A EP 12164048A EP 2511058 B1 EP2511058 B1 EP 2511058B1
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EP
European Patent Office
Prior art keywords
product
cutting blade
cutting
blade
rotation
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP20120164048
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German (de)
French (fr)
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EP2511058A1 (en
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Weber Maschinenbau GmbH Breidenbach
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Weber Maschinenbau GmbH Breidenbach
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Publication of EP2511058A1 publication Critical patent/EP2511058A1/en
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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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/30—Halving devices, e.g. for halving buns
    • 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
    • B26D1/143—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 rotating about a stationary axis
    • B26D1/15—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 rotating about a stationary axis with vertical cutting member
    • 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
    • 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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • 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
    • Y10T83/04—Processes
    • 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
    • Y10T83/04—Processes
    • Y10T83/05—With reorientation of tool between cuts
    • 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
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0572—Plural cutting steps effect progressive cut
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8827—Means to vary force on, or speed of, tool during stroke
    • 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

Definitions

  • the present invention relates to a method for slicing food products, in particular for dividing stacks from individual food product slices, in which a cutting knife performs a primary movement defining a cutting plane and a product to be sliced is fed by a conveyor to the slicing knife to engage the product with the slicing knife bring to.
  • cutting devices such as high-performance slicers serve to separate product slices with high cutting rate from a product slab or product bars.
  • the separated individual slices can be supplied in a stacked or shingled form to a subsequent processing device, for example a packaging machine.
  • a subsequent processing device for example a packaging machine.
  • it is desired to divide the product disk stacks prior to further processing e.g. cut through in stacking direction.
  • the problem is that due to an adhesion between the cutting blade surface and the product individual product slices are moved or raised and thus the predetermined shape of the stack is impaired.
  • This problem of partial co - movement of individual product slices according to the primary movement of the product Cutting knife occurs in reinforced form when there are film or paper layers between the product slices. Even with ultrasonic cutting can undesirably move product parts.
  • the cutting knife while engaging the product, may be temporarily moved at a speed different from the speed of the primary movement.
  • the speed can be changed both in terms of amount and direction.
  • the cutting blade can be moved about a knife axis rotating in the cutting plane, wherein, while the cutting blade is engaged with the product, the direction of rotation of the rotational movement is changed.
  • the primary movement of the cutting blade is thus a rotational movement in a primary direction of rotation.
  • the rotatable cutting blade can in this case be designed in particular as a circular blade or as a segment blade.
  • the EP 2 082 854 A1 discloses a cutting device in which a dough piece is delivered by means of a belt conveyor to a cutting blade which reciprocates about a rotation axis. To use a high oscillation frequency to achieve clean cuts can, the cutting blade is formed of two individual blades with intermediate spacers.
  • the cutting blade is alternately rotated by a first rotation angle according to the primary movement and by a second rotation angle against the primary movement, wherein the first rotation angle is greater than the second rotation angle. Averaged over a longer period of time, the cutting blade thus performs an overall rotation in the direction of the primary movement, but recurrent phases of counter-rotation occur.
  • the rotation angles can be selected depending on the application. It is only necessary to ensure that one edge of the cutting blade engages with the product when reversing the direction of rotation.
  • the cutting knife while in engagement with the product, may be temporarily moved counter to the primary movement.
  • Movement of a product disk is compensated for by the primary movement of the cutting blade, which improves the quality of the cut and avoids shifting or lifting product slices in a stack.
  • the cutting blade may also be decelerated and / or accelerated while in engagement with the product.
  • a deceleration or acceleration can also occur in combination with a change of direction.
  • the cutting blade can in particular be alternately braked and accelerated again.
  • the cutting blade is oscillated or oscillated in the cutting plane.
  • the oscillation frequency can be selected so high that a change of entrainment movement and compensation movement takes place so quickly that it remains unnoticed by the product slices substantially and product slicing motion during cutting is at least approximately completely avoided.
  • the product is supplied to the cutting blade by the product is moved by means of a product conveyor in a direction parallel to the cutting plane extending conveying direction to the cutting blade.
  • the cutting blade does not have to carry out any further proper movement since the product is delivered by means of the product conveyor to the corresponding cutting edge of the cutting blade.
  • the cutting blade may also be in addition to the primary movement and the movement opposite thereto is moved relative to the product, ie it can be lowered for example as a rotating and / or planetary rotating circular blade on the product.
  • a device for slicing food products, in particular for dividing stacks from individual food products, comprises a cutting knife, a drive for setting the cutting knife in a primary movement defining a cutting plane, and a conveying device for feeding a product to be cut to the cutting knife and the product engaging the cutting blade, the drive being adapted to temporarily move the cutting blade while being engaged with the product at a speed different from the speed of the primary movement, and wherein the drive is adapted to the cutting blade to rotate a blade axis in the cutting plane and, while the cutting blade is engaged with the product, to change the direction of rotation of the rotational movement.
  • the drive is further configured to rotate the cutting blade alternately by a first rotation angle in accordance with the primary movement and by a second rotation angle against the primary movement, wherein the first rotation angle is greater than the second rotation angle.
  • the drive may be configured to temporarily disengage the cutting blade from the primary motion while engaging the product to move.
  • a change in the speed and in particular a change in the direction of movement can be accomplished, for example, that a motor of the drive is driven accordingly.
  • the conveying device is designed to move the product towards the cutting blade in a conveying direction running parallel to the cutting plane.
  • a device may serve to divide a continuously conveyed stream of product stacks prior to further processing, e.g. cut into two equal halves of stacking.
  • the conveying direction may comprise, for example, a continuously operating product conveyor, in particular a belt or belt conveyor.
  • the splitting of the product stacks can thus take place in a continuous process.
  • the primary movement is a rotational movement of the cutting blade about a knife axis.
  • the cutting blade may be a circular blade or a segment blade.
  • the cutting blade is a saw blade, that is, the cutting edge of the cutting blade has at least partially a toothing.
  • illustrated apparatus for slicing food products comprises an endless belt conveyor 11, on which product stack 13 of individual product slices 15 rest.
  • the product slices 15 may be, for example, sausage or cheese slices.
  • the endless belt conveyor 11 feeds the product stacks 13 into a cutting blade 17 in a continuous flow along a conveying direction F.
  • the illustrated device may be integrated into a larger food production plant and, in particular, be arranged downstream of a high-performance slicer which produces the individual product slices 15 by separating from a product slab or product slab.
  • the slicing device can be arranged in particular on a depositor of a production plant.
  • the cutting knife 17 is considered to be one about a horizontal knife axis A ( Fig. 2 ) rotating circular blade formed and has a circumferential cutting edge 19.
  • the cutting edge 19 defines a cutting plane S, which is perpendicular to a support surface 21 of the endless belt conveyor 11 and is arranged parallel to the conveying direction F.
  • the product stacks 13 reach the cutting edge 19, which according to a primary movement 25 - Fig. 1 counterclockwise - rotates, so that ultimately the cutting edge 19 cuts through the product stack 13.
  • the product stack 13 is divided in this way into two stack halves 13A, 13B, which are conveyed by the endless belt conveyor 11 and then fed to a packaging machine which packages the two stack halves 13A, 13B together or separately.
  • the cutting knife 17 is moved in recurring, preferably regular, intervals into a counter-movement 27 - opposing the primary movement 25 Fig. 1 clockwise - offset.
  • the cutting blade 17 performs a total oscillating or a circumferentially oscillating movement.
  • the cutting blade 17 can be rotated alternately by a first rotation angle in the direction of the primary movement 25 and by a second rotation angle in the direction of the counter-movement 27, wherein the first rotation angle is greater than the second rotation angle.
  • Changing the direction of rotation of the cutting blade 17 can be done, for example, by means of a suitable control of a rotary drive (not shown) associated with the cutting blade 17.
  • the product stack 13 can be cut particularly clean, with a displacement or lifting individual product slices 15 is avoided in that a possible entrainment is compensated directly by an opposite movement again.
  • the temporary movement of the cutting blade against the primary movement during cutting is particularly suitable for severing stacks of individual product slices - especially when they are separated by paper or film layers.
  • the slicing principle according to the invention can also increase the quality of cut when slicing coherent product pieces, for example when separating product slices from a product slab. As an additional advantage results from the oscillation of the cutting blade and a self-cleaning effect.

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Aufschneiden von Lebensmittelprodukten, insbesondere zum Teilen von Stapeln aus einzelnen Lebensmittelproduktscheiben, bei dem ein Schneidmesser eine eine Schneidebene definierende Primärbewegung ausführt und ein aufzuschneidendes Produkt mittels einer Fördereinrichtung dem Schneidmesser zugeführt wird, um das Produkt mit dem Schneidmesser in Eingriff zu bringen.The present invention relates to a method for slicing food products, in particular for dividing stacks from individual food product slices, in which a cutting knife performs a primary movement defining a cutting plane and a product to be sliced is fed by a conveyor to the slicing knife to engage the product with the slicing knife bring to.

In der Lebensmittel verarbeitenden Industrie müssen Lebensmittelprodukte wie Fleisch, Wurst oder Käse auf unterschiedliche Art und Weise aufgeschnitten werden. Beispielsweise dienen Schneidvorrichtungen wie Hochleistungs-Slicer dazu, Produktscheiben mit hoher Schnittfolge von einem Produktlaib oder Produktriegel abzutrennen. Die abgetrennten Einzelscheiben können in gestapelter oder geschindelter Form einer nachfolgenden Verarbeitungseinrichtung, beispielsweise einer Verpackungsmaschine, zugeführt werden. Bei bestimmten Anwendungen ist es gewünscht, die Produktscheibenstapel vor der weiteren Verarbeitung zu teilen, also z.B. in Stapelrichtung durchzuschneiden.In the food processing industry, food products such as meat, sausage or cheese have to be cut in different ways. For example, cutting devices such as high-performance slicers serve to separate product slices with high cutting rate from a product slab or product bars. The separated individual slices can be supplied in a stacked or shingled form to a subsequent processing device, for example a packaging machine. In certain applications, it is desired to divide the product disk stacks prior to further processing, e.g. cut through in stacking direction.

Insbesondere bei einem derartigen Teilen von Stapeln aus einzelnen Produktscheiben besteht das Problem, dass aufgrund einer Haftwirkung zwischen der Schneidmesseroberfläche und dem Produkt einzelne Produktscheiben verschoben oder angehoben werden und somit die vorgegebene Form des Stapels beeinträchtigt wird. Dieses Problem des teilweisen Mitbewegens einzelner Produktscheiben gemäß der Primärbewegung des Schneidmessers tritt in verstärkter Form auf, wenn sich zwischen den Produktscheiben Folien- oder Papierlagen befinden. Auch beim Ultraschallschneiden können sich unerwünschterweise Produktteile verschieben.In particular, in such a sharing of stacks of individual product slices, the problem is that due to an adhesion between the cutting blade surface and the product individual product slices are moved or raised and thus the predetermined shape of the stack is impaired. This problem of partial co - movement of individual product slices according to the primary movement of the product Cutting knife occurs in reinforced form when there are film or paper layers between the product slices. Even with ultrasonic cutting can undesirably move product parts.

Zur Verbesserung der Schnittqualität kann das Schneidmesser, während es mit dem Produkt in Eingriff steht, zeitweise mit einer von der Geschwindigkeit der Primärbewegung verschiedenen Geschwindigkeit bewegt werden. Durch eine derartige Geschwindigkeitsänderung während des Schneidvorgangs kann der Effekt des Mitnehmens von Produktscheiben mit dem Schneidmesser abgeschwächt werden. Die Geschwindigkeit kann dabei sowohl betragsmäßig als auch richtungsmäßig geändert werden.To improve the quality of cut, the cutting knife, while engaging the product, may be temporarily moved at a speed different from the speed of the primary movement. By such a speed change during the cutting process, the effect of taking away product slices can be mitigated with the cutting blade. The speed can be changed both in terms of amount and direction.

Insbesondere kann das Schneidmesser um eine Messerachse rotierend in der Schneidebene bewegt werden, wobei, während das Schneidmesser mit dem Produkt in Eingriff steht, die Drehrichtung der Rotationsbewegung gewechselt wird. Bei dieser Ausführungsform ist die Primärbewegung des Schneidmessers also eine Rotationsbewegung in einer Primärdrehrichtung. Durch wiederholtes Wechseln der Drehrichtung kann das Schneidmesser in eine Drehschwingung versetzt werden. Dies ist mit relativ einfachen Mitteln möglich, beispielsweise über eine geeignete Ansteuerung eines das Schneidmesser antreibenden Motors. Das rotierbare Schneidmesser kann hierbei insbesondere als Kreismesser oder als Segmentmesser ausgebildet sein.In particular, the cutting blade can be moved about a knife axis rotating in the cutting plane, wherein, while the cutting blade is engaged with the product, the direction of rotation of the rotational movement is changed. In this embodiment, the primary movement of the cutting blade is thus a rotational movement in a primary direction of rotation. By repeatedly changing the direction of rotation, the cutting blade can be put into a torsional vibration. This is possible with relatively simple means, for example via a suitable control of a motor driving the cutting blade. The rotatable cutting blade can in this case be designed in particular as a circular blade or as a segment blade.

Die EP 2 082 854 A1 offenbart eine Schneidvorrichtung, bei welcher ein Teigstück mittels eines Bandförderers einem Schneidmesser zugestellt wird, welches um eine Rotationsachse hin- und herschwenkt. Um zur Erzielung sauberer Schnitte eine hohe Oszillationsfrequenz einsetzen zu können, ist das Schneidmesser aus zwei Einzelklingen mit dazwischenliegenden Abstandshaltern ausgebildet.The EP 2 082 854 A1 discloses a cutting device in which a dough piece is delivered by means of a belt conveyor to a cutting blade which reciprocates about a rotation axis. To use a high oscillation frequency to achieve clean cuts can, the cutting blade is formed of two individual blades with intermediate spacers.

Bei der Schneidvorrichtung der JP 05023996 A wird ein Kreismesser mittels Ultraschall zu Torsionsschwingungen in der Schneidebene angeregt, um ein Anhaften des Schneidguts an der Klinge sowie das Erzeugen von Schnipseln zu vermeiden.In the cutting device of JP 05023996 A A circular blade is excited by means of ultrasound to torsional vibrations in the cutting plane to avoid sticking of the crop to the blade and the production of Schnipseln.

Es ist eine Aufgabe der Erfindung, beim Aufschneiden von Lebensmittelprodukten eine höhere Schnittqualität zu erzielen und insbesondere ein unerwünschtes Mitbewegen von Produktteilen mit dem Schneidmesser zu verhindern.It is an object of the invention to achieve a higher quality of cut when slicing food products and in particular to prevent unwanted co-movement of product parts with the cutting blade.

Die Lösung der Aufgabe erfolgt durch ein Verfahren mit den Merkmalen des Anspruchs 1.The object is achieved by a method having the features of claim 1.

Erfindungsgemäß wird das Schneidmesser abwechselnd um einen ersten Drehwinkel gemäß der Primärbewegung und um einen zweiten Drehwinkel entgegen der Primärbewegung rotiert, wobei der erste Drehwinkel größer ist als der zweite Drehwinkel. Über einen längeren Zeitraum gemittelt führt das Schneidmesser also eine Gesamtrotation in Richtung der Primärbewegung aus, wobei jedoch wiederkehrende Phasen einer Gegenrotation auftreten. Die Drehwinkel können in Abhängigkeit von der jeweiligen Anwendung gewählt werden. Es ist lediglich darauf zu achten, dass eine Schneide des Schneidmessers bei der Umkehr der Drehrichtung mit dem Produkt in Eingriff steht.According to the invention, the cutting blade is alternately rotated by a first rotation angle according to the primary movement and by a second rotation angle against the primary movement, wherein the first rotation angle is greater than the second rotation angle. Averaged over a longer period of time, the cutting blade thus performs an overall rotation in the direction of the primary movement, but recurrent phases of counter-rotation occur. The rotation angles can be selected depending on the application. It is only necessary to ensure that one edge of the cutting blade engages with the product when reversing the direction of rotation.

Das Schneidmesser kann, während es mit dem Produkt in Eingriff steht, zeitweise entgegen der Primärbewegung bewegt werden. Durch eine derartige Gegenbewegung des Schneidmessers während des Schneidvorgangs wird ein Mitbewegen einer Produktscheibe mit der Primärbewegung des Schneidmessers ausgeglichen, wodurch sich die Schnittqualität verbessert und ein Verschieben oder Anheben von Produktscheiben in einem Stapel vermieden werden kann.The cutting knife, while in engagement with the product, may be temporarily moved counter to the primary movement. By such a counter movement of the cutting blade during the cutting process Movement of a product disk is compensated for by the primary movement of the cutting blade, which improves the quality of the cut and avoids shifting or lifting product slices in a stack.

Das Schneidmesser kann auch, während es mit dem Produkt in Eingriff steht, abgebremst und/oder beschleunigt werden. Ein Abbremsen oder Beschleunigen kann auch in Kombination mit einem Richtungswechsel auftreten. Im Sinne eines kontinuierlichen Schneidbetriebs kann das Schneidmesser insbesondere abwechselnd abgebremst und wieder beschleunigt werden.The cutting blade may also be decelerated and / or accelerated while in engagement with the product. A deceleration or acceleration can also occur in combination with a change of direction. In the sense of a continuous cutting operation, the cutting blade can in particular be alternately braked and accelerated again.

Vorzugsweise wird das Schneidmesser, während es mit dem Produkt in Eingriff steht, pendelnd oder oszillierend in der Schneidebene bewegt. Durch eine derartige Oszillationsbewegung lässt sich eine besonders hohe Schnittqualität erzielen. Als zusätzlicher Vorteil ergibt sich ein Selbstreinigungseffekt des Schneidmessers. Die Oszillationsfrequenz kann so hoch gewählt werden, dass ein Wechsel von Mitnahmebewegung und Ausgleichsbewegung so schnell erfolgt, dass er von den Produktscheiben im Wesentlichen unbemerkt bleibt und eine Produktscheibenbewegung beim Schneiden zumindest annähernd vollständig vermieden wird.Preferably, while in engagement with the product, the cutting blade is oscillated or oscillated in the cutting plane. By means of such an oscillation movement, a particularly high quality of cut can be achieved. As an additional advantage results in a self-cleaning effect of the cutting blade. The oscillation frequency can be selected so high that a change of entrainment movement and compensation movement takes place so quickly that it remains unnoticed by the product slices substantially and product slicing motion during cutting is at least approximately completely avoided.

Vorzugsweise wird das Produkt dem Schneidmesser zugeführt, indem das Produkt mittels eines Produktförderers in einer parallel zu der Schneidebene verlaufenden Förderrichtung auf das Schneidmesser zubewegt wird. Das Schneidmesser muss also abgesehen von der Primärbewegung und der hierzu entgegengesetzten Bewegung keine weitere Eigenbewegung ausführen, da das Produkt mittels des Produktförderers der entsprechenden Schneide des Schneidmessers zugestellt wird. Sollte es die Anwendung erfordern, kann das Schneidmesser jedoch auch zusätzlich zur Primärbewegung und der hierzu entgegengesetzten Bewegung relativ zu dem Produkt bewegt werden, d.h. es kann beispielsweise als ein rotierendes und/oder planetarisch umlaufendes Kreismesser auf das Produkt herabgesenkt werden.Preferably, the product is supplied to the cutting blade by the product is moved by means of a product conveyor in a direction parallel to the cutting plane extending conveying direction to the cutting blade. Apart from the primary movement and the movement opposite thereto, therefore, the cutting blade does not have to carry out any further proper movement since the product is delivered by means of the product conveyor to the corresponding cutting edge of the cutting blade. However, if required by the application, the cutting blade may also be in addition to the primary movement and the movement opposite thereto is moved relative to the product, ie it can be lowered for example as a rotating and / or planetary rotating circular blade on the product.

Die Lösung der vorstehend genannten Aufgabe erfolgt auch durch eine Vorrichtung mit den Merkmalen des Anspruchs 5.The solution of the above-mentioned object is also achieved by a device having the features of claim 5.

Eine erfindungsgemäße Vorrichtung zum Aufschneiden von Lebensmittelprodukten, insbesondere zum Teilen von Stapeln aus einzelnen Lebensmittelprodukten, umfasst ein Schneidmesser, einen Antrieb, um das Schneidmesser in eine eine Schneidebene definierende Primärbewegung zu versetzen, und eine Fördereinrichtung, um dem Schneidmesser ein aufzuschneidendes Produkt zuzuführen und das Produkt mit dem Schneidmesser in Eingriff zu bringen, wobei der Antrieb dazu ausgebildet ist, das Schneidmesser, während es mit dem Produkt in Eingriff steht, zeitweise mit einer von der Geschwindigkeit der Primärbewegung verschiedenen Geschwindigkeit zu bewegen, und wobei der Antrieb dazu ausgebildet ist, das Schneidmesser um eine Messerachse rotierend in der Schneidebene zu bewegen und, während das Schneidmesser mit dem Produkt in Eingriff steht, die Drehrichtung der Rotationsbewegung zu wechseln.A device according to the invention for slicing food products, in particular for dividing stacks from individual food products, comprises a cutting knife, a drive for setting the cutting knife in a primary movement defining a cutting plane, and a conveying device for feeding a product to be cut to the cutting knife and the product engaging the cutting blade, the drive being adapted to temporarily move the cutting blade while being engaged with the product at a speed different from the speed of the primary movement, and wherein the drive is adapted to the cutting blade to rotate a blade axis in the cutting plane and, while the cutting blade is engaged with the product, to change the direction of rotation of the rotational movement.

Erfindungsgemäß ist der Antrieb ferner dazu ausgebildet, das Schneidmesser abwechselnd um einen ersten Drehwinkel gemäß der Primärbewegung und um einen zweiten Drehwinkel entgegen der Primärbewegung zu rotieren, wobei der erste Drehwinkel größer ist als der zweite Drehwinkel.According to the invention, the drive is further configured to rotate the cutting blade alternately by a first rotation angle in accordance with the primary movement and by a second rotation angle against the primary movement, wherein the first rotation angle is greater than the second rotation angle.

Insbesondere kann der Antrieb dazu ausgebildet sein, das Schneidmesser, während es mit dem Produkt in Eingriff steht, zeitweise entgegen der Primärbewegung zu bewegen. Eine Änderung der Geschwindigkeit und insbesondere ein Wechsel der Bewegungsrichtung kann beispielsweise dadurch bewerkstelligt werden, dass ein Motor des Antriebs entsprechend angesteuert wird.In particular, the drive may be configured to temporarily disengage the cutting blade from the primary motion while engaging the product to move. A change in the speed and in particular a change in the direction of movement can be accomplished, for example, that a motor of the drive is driven accordingly.

Gemäß einer Ausführungsform ist die Fördereinrichtung dazu ausgebildet, das Produkt in einer parallel zu der Schneidebene verlaufenden Förderrichtung auf das Schneidmesser zuzubewegen. Eine derartige Vorrichtung kann insbesondere dazu dienen, einen kontinuierlich geförderten Strom von Produktstapeln vor einer weiteren Verarbeitung zu teilen, z.B. in zwei gleichgroße Stapelhälften zu zerschneiden.According to one embodiment, the conveying device is designed to move the product towards the cutting blade in a conveying direction running parallel to the cutting plane. In particular, such a device may serve to divide a continuously conveyed stream of product stacks prior to further processing, e.g. cut into two equal halves of stacking.

Die Förderrichtung kann beispielsweise einen kontinuierlich arbeitenden Produktförderer, insbesondere einen Band- oder Riemenförderer, umfassen. Das Teilen der Produktstapel kann somit im Durchlauf erfolgen.The conveying direction may comprise, for example, a continuously operating product conveyor, in particular a belt or belt conveyor. The splitting of the product stacks can thus take place in a continuous process.

Gemäß einer Ausgestaltung der Erfindung ist die Primärbewegung eine Rotationsbewegung des Schneidmessers um eine Messerachse. Insbesondere kann das Schneidmesser ein Kreismesser oder ein Segmentmesser sein. Gemäß einer Ausgestaltung der Erfindung ist das Schneidmesser ein Sägemesser, d.h. die Schneide des Schneidmessers weist zumindest abschnittsweise eine Verzahnung auf.According to one embodiment of the invention, the primary movement is a rotational movement of the cutting blade about a knife axis. In particular, the cutting blade may be a circular blade or a segment blade. According to one embodiment of the invention, the cutting blade is a saw blade, that is, the cutting edge of the cutting blade has at least partially a toothing.

Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen, der Beschreibung sowie der beigefügten Zeichnung angegeben.Further developments of the invention are specified in the dependent claims, the description and the accompanying drawings.

Die Erfindung wird nachfolgend beispielhaft unter Bezugnahme auf die Zeichnung beschrieben.

Fig. 1
ist eine vereinfachte Seitenansicht einer erfindungsgemäßen Vorrichtung zum Aufschneiden von Lebensmittelprodukten.
Fig. 2
zeigt eine Draufsicht auf die Vorrichtung gemäß Fig. 1.
The invention will now be described by way of example with reference to the drawings.
Fig. 1
is a simplified side view of a device according to the invention for slicing food products.
Fig. 2
shows a plan view of the device according to Fig. 1 ,

Die in Fig. 1 und 2 dargestellte Vorrichtung zum Aufschneiden von Lebensmittelprodukten umfasst einen Endlosbandförderer 11, auf welchem Produktstapel 13 aus einzelnen Produktscheiben 15 aufliegen. Bei den Produktscheiben 15 kann es sich beispielsweise um Wurst- oder Käsescheiben handeln. Der Endlosbandförderer 11 führt die Produktstapel 13 in einem kontinuierlichen Strom entlang einer Förderrichtung F einem Schneidmesser 17 zu. Die dargestellte Vorrichtung kann in eine größere Lebensmittel-Produktionsanlage integriert sein und insbesondere einem Hochleistungs-Slicer nachgeordnet sein, welcher die einzelnen Produktscheiben 15 durch Abtrennen von einem Produktlaib oder Produktriegel erzeugt. Die Aufschneidevorrichtung kann insbesondere an einem Einleger einer Produktionsanlage angeordnet sein.In the Fig. 1 and 2 illustrated apparatus for slicing food products comprises an endless belt conveyor 11, on which product stack 13 of individual product slices 15 rest. The product slices 15 may be, for example, sausage or cheese slices. The endless belt conveyor 11 feeds the product stacks 13 into a cutting blade 17 in a continuous flow along a conveying direction F. The illustrated device may be integrated into a larger food production plant and, in particular, be arranged downstream of a high-performance slicer which produces the individual product slices 15 by separating from a product slab or product slab. The slicing device can be arranged in particular on a depositor of a production plant.

Das Schneidmesser 17 ist als ein um eine horizontale Messerachse A (Fig. 2) rotierendes Kreismesser ausgebildet und weist eine umfängliche Schneide 19 auf. Die Schneide 19 definiert eine Schneidebene S, welche rechtwinklig zu einer Auflagefläche 21 des Endlosbandförderers 11 und parallel zu der Förderrichtung F angeordnet ist. Bei der Bewegung entlang der Förderrichtung F gelangen die Produktstapel 13 an die Schneide 19, welche gemäß einer Primärbewegung 25 - in Fig. 1 entgegen dem Uhrzeigersinn - rotiert, sodass letztlich die Schneide 19 durch den Produktstapel 13 hindurchschneidet. Der Produktstapel 13 wird auf diese Weise in zwei Stapelhälften 13A, 13B geteilt, welche durch den Endlosbandförderer 11 weitergefördert und anschließend einer Verpackungsmaschine zugeführt werden, welche die beiden Stapelhälften 13A, 13B gemeinsam oder getrennt verpackt.The cutting knife 17 is considered to be one about a horizontal knife axis A ( Fig. 2 ) rotating circular blade formed and has a circumferential cutting edge 19. The cutting edge 19 defines a cutting plane S, which is perpendicular to a support surface 21 of the endless belt conveyor 11 and is arranged parallel to the conveying direction F. During the movement along the conveying direction F, the product stacks 13 reach the cutting edge 19, which according to a primary movement 25 - Fig. 1 counterclockwise - rotates, so that ultimately the cutting edge 19 cuts through the product stack 13. The product stack 13 is divided in this way into two stack halves 13A, 13B, which are conveyed by the endless belt conveyor 11 and then fed to a packaging machine which packages the two stack halves 13A, 13B together or separately.

Um die Schnittqualität zu erhöhen und ein Verschieben oder Anheben einzelner Produktscheiben 15 beim Durchschneiden eines Produktstapels 13 zu vermeiden, wird das Schneidmesser 17 in wiederkehrenden, vorzugsweise regelmäßigen, Abständen in eine der Primärbewegung 25 entgegengerichtete Gegenbewegung 27 - in Fig. 1 im Uhrzeigersinn - versetzt. Mit anderen Worten führt das Schneidmesser 17 insgesamt eine oszillierende bzw. eine in Umfangsrichtung pendelnde Bewegung aus. Konkret kann das Schneidmesser 17 abwechselnd um einen ersten Drehwinkel in Richtung der Primärbewegung 25 und um einen zweiten Drehwinkel in Richtung der Gegenbewegung 27 rotiert werden, wobei der erste Drehwinkel größer ist als der zweite Drehwinkel. Das Wechseln der Drehrichtung des Schneidmessers 17 kann beispielsweise mittels einer geeigneten Ansteuerung eines dem Schneidmesser 17 zugeordneten Drehantriebs (nicht dargestellt) erfolgen.In order to increase the quality of cut and to avoid shifting or lifting of individual product slices 15 when a product stack 13 is cut, the cutting knife 17 is moved in recurring, preferably regular, intervals into a counter-movement 27 - opposing the primary movement 25 Fig. 1 clockwise - offset. In other words, the cutting blade 17 performs a total oscillating or a circumferentially oscillating movement. Concretely, the cutting blade 17 can be rotated alternately by a first rotation angle in the direction of the primary movement 25 and by a second rotation angle in the direction of the counter-movement 27, wherein the first rotation angle is greater than the second rotation angle. Changing the direction of rotation of the cutting blade 17 can be done, for example, by means of a suitable control of a rotary drive (not shown) associated with the cutting blade 17.

Durch die oszillierende Drehbewegung des Schneidmessers 17 können die Produktstapel 13 besonders sauber durchtrennt werden, wobei ein Verschieben oder Abheben einzelner Produktscheiben 15 dadurch vermieden wird, dass eine eventuelle Mitnahmebewegung unmittelbar durch eine entgegengesetzte Bewegung wieder ausgeglichen wird. Vorzugsweise erfolgt die Oszillationsbewegung derart schnell, dass aufgrund von Trägheitseffekten weder eine Mitnahmebewegung noch eine Ausgleichsbewegung der Produktscheiben 15 feststellbar ist.By the oscillating rotational movement of the cutting blade 17, the product stack 13 can be cut particularly clean, with a displacement or lifting individual product slices 15 is avoided in that a possible entrainment is compensated directly by an opposite movement again. Preferably takes place the oscillatory motion so fast that due to inertial effects neither a driving movement nor a compensating movement of the product slices 15 can be detected.

Das zeitweilige Bewegen des Schneidmessers entgegen der Primärbewegung während der Schnittführung eignet sich besonders zum Durchtrennen von Stapeln aus einzelnen Produktscheiben - vor allem dann, wenn diese durch Papier- oder Folienlagen voneinander getrennt sind. Grundsätzlich kann das erfindungsgemäße Aufschneideprinzip jedoch auch die Schnittqualität beim Aufschneiden von zusammenhängenden Produktstücken erhöhen, beispielsweise bei einem Abtrennen von Produktscheiben von einem Produktriegel. Als zusätzlicher Vorteil ergibt sich durch die Oszillationsbewegung des Schneidmessers auch ein Selbstreinigungseffekt.The temporary movement of the cutting blade against the primary movement during cutting is particularly suitable for severing stacks of individual product slices - especially when they are separated by paper or film layers. In principle, however, the slicing principle according to the invention can also increase the quality of cut when slicing coherent product pieces, for example when separating product slices from a product slab. As an additional advantage results from the oscillation of the cutting blade and a self-cleaning effect.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1111
EndlosbandfördererEndless belt conveyor
13, 13A, 13B13, 13A, 13B
Produktstapelproduct stack
1515
Produktscheibeproduct slice
1717
Schneidmessercutting blade
1919
Schneidecutting edge
2121
Auflageflächebearing surface
2525
Primärbewegungprimary movement
2727
Gegenbewegungcountermovement
FF
Förderrichtungconveying direction
AA
Messerachseblade axis
SS
Schneidebenecutting plane

Claims (9)

  1. A method for slicing food products (13), in particular for dividing stacks (13) of individual food product slices (15), wherein a cutting blade (17) carries out a primary movement (25) defining a cutting plane (S) and a product (13) to be sliced is supplied to the cutting blade (17) by means of a conveying device (11) to bring the product (13) into engagement with the cutting blade (17),
    wherein the cutting blade (17) is moved from time to time at a speed different from the speed of the primary movement (25) while it is in engagement with the product (13),
    wherein the cutting blade (17) is moved about a blade axis (A) rotating in the cutting plane (S), with the direction of rotation of the rotational movement being changed while the cutting blade (17) is in engagement with the product (13),
    characterized in that
    the cutting blade (17) is rotated alternately about a first angle of rotation in accordance with the primary movement (25) and about a second angle of rotation against the primary movement (25), with the first angle of rotation being larger than the second angle of rotation.
  2. A method in accordance with claim 1,
    characterized in that
    the cutting blade (17) is decelerated and/or accelerated while it is in engagement with the product (13).
  3. A method in accordance with one of the preceding claims, characterized in that
    the cutting blade (17) is moved in a swinging or oscillating manner in the cutting plane (S) while it is in engagement with the product (13).
  4. A method in accordance with any one of the preceding claims, characterized in that
    the product (13) is supplied to the cutting blade (17) in that the product (13) is moved toward the cutting blade (17) by means of a product conveyor (11) in a conveying direction (F) extending parallel to the cutting plane (S).
  5. An apparatus for slicing food products (13), in particular for dividing stacks (13) of individual food product slices (15), having
    a cutting blade (17);
    a drive to set the cutting blade (17) into a primary movement (25) defining a cutting plane (S); and
    a conveying device (11) to supply a product (13) to be sliced to the cutting blade (17) and to bring the product (13) into engagement with the cutting blade (17), wherein
    the drive is designed to move the cutting blade (17) from time to time at a speed different from the speed of the primary movement (25) while it is in engagement with the product (13),
    wherein the drive is designed to move the cutting blade (17) about a blade axis (A) rotating in the cutting plane (S), with the direction of rotation of the rotational movement being changed while the cutting blade (17) is in engagement with the product (13),
    characterized in that
    the drive is configure to rotate the cutting blade (17) alternately about a first angle of rotation in accordance with the primary movement (25) and about a second angle of rotation against the primary movement (25), with the first angle of rotation being larger than the second angle of rotation.
  6. An apparatus in accordance with claim 5,
    characterized in that
    the conveying device (11) is designed to move the product (13) toward the cutting blade (17) in a conveying direction (F) extending parallel to the cutting plane (S).
  7. An apparatus in accordance with claim 5 or claim 6, characterized in that
    the conveying device (11) includes a continuously operating product conveyor, in particular a belt conveyor or strip conveyor.
  8. An apparatus in accordance with any one of the claims 5 to 7, characterized in that
    the cutting blade (17) is a circular blade or a segment blade.
  9. An apparatus in accordance with any one of the claims 5 to 8, characterized in that
    the cutting blade (17) is a saw blade.
EP20120164048 2011-04-15 2012-04-13 Method for cutting food Not-in-force EP2511058B1 (en)

Applications Claiming Priority (1)

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DE201110017227 DE102011017227A1 (en) 2011-04-15 2011-04-15 Process for slicing food products

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US8991289B2 (en) 2015-03-31
DE102011017227A1 (en) 2012-10-18
US20130025420A1 (en) 2013-01-31

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