EP0955135A2 - Slicing machine for products in loaf form - Google Patents

Slicing machine for products in loaf form Download PDF

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Publication number
EP0955135A2
EP0955135A2 EP99108048A EP99108048A EP0955135A2 EP 0955135 A2 EP0955135 A2 EP 0955135A2 EP 99108048 A EP99108048 A EP 99108048A EP 99108048 A EP99108048 A EP 99108048A EP 0955135 A2 EP0955135 A2 EP 0955135A2
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EP
European Patent Office
Prior art keywords
drive arm
cutting
strand
circular knife
driven
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EP99108048A
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German (de)
French (fr)
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EP0955135A3 (en
EP0955135B1 (en
Inventor
Uwe Reifenhäuser
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • 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
    • B26D1/157—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 movable axis
    • B26D1/16—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 movable axis mounted on a movable arm or the like

Definitions

  • the invention relates to a device for cutting a strand of material into slices with a cutting device, a feed device for the strand of material and a receiving device for the slices cut from the strand of material, the strand of material being movable in the vertical direction toward the cutting device by means of the feed device which can be cut off from the lower end of the crop strand in a substantially horizontal cutting plane.
  • the feeding device is designed as a vertical shaft, in which the strand to be cut is moved towards the cutting device while hanging from the gripper hook.
  • the cutting device itself is designed as a sickle knife rotating in a horizontal plane, which rotates about a fixed axis of rotation and thereby the entire cross section of the feeding shaft sweeps over.
  • the feed device is connected to the receiving device in such a positive manner that the vertical downward movement of the material strand and the vertical downward movement of the stack inevitably takes place synchronously and at the same constant speed.
  • Such devices have generally proven themselves in practice. In principle, however, they reach their limits if - following a general trend - the cutting performance is to be further increased and at the same time the cutting quality is to be improved.
  • An improvement in the cutting quality can generally only be achieved by increasing the cutting length. This reduces the effective wedge angle on the cutting edge of the knife, which determines the effective sharpness of the knife. This is because there is an increase in the speed of the knife perpendicular to Infeed direction in relation to its speed in the infeed direction, so that a more pronounced pulling cut ".
  • the ratio of the above-mentioned speeds can only be influenced in the desired manner by lengthening the cutting edge overall, that is to say choosing a spiral shape with a smaller increase in radius per angular unit. Due to the limited angular range available for the spiral, this inevitably leads to an increase in the diameter of the sickle knife.
  • the invention has for its object to propose a device with which high cutting performance can be achieved with a very good quality of cutting. Furthermore, the installation space required for such a machine should be kept as small as possible.
  • the cutting device has a circular knife which can be rotated on a drive arm which can be driven in rotation.
  • a circular knife is used in the device according to the invention, its speed can be selected to be very high, so that a very high cutting speed can be achieved.
  • a suitable coordination of the speed of the drive arm and the speed of the circular knife typically the ratio of the two speeds is about 1:10, but completely different ratios are also conceivable
  • very small values of the effective wedge angle can be achieved, so that the sharpness is more like this Knife is excellent.
  • the device according to the invention thus has a number of advantages over the known device equipped with a sickle knife as a cutting device.
  • the cutting device used in the form of a circular knife rotating on a drive arm may be more complex than the known use of a sickle-shaped knife.
  • a storage surface of the receiving device which receives the disks is arranged inclined relative to the horizontal in such a way that a wedge-shaped gap is formed between the lower end face of the crop strand and the storage surface, into which the drive arm of the cutting device penetrates.
  • the vertical distance between the cutting plane and the storage surface is shortened in the region of the cross section of the material strand, which is connected to the newly cut disk at the end of the cutting process via a residual cross section.
  • an enlarged contact surface can be created for the pane to be cut off before it is completely separated.
  • Such a bearing surface is therefore necessary in order to prevent an uncontrolled spinning movement of the disk in the final phase of the cutting process. This is because, due to its frictional partial support on the storage surface, it is prevented from undesired relative movement to the storage surface.
  • the distance between the cutting plane and the storage surface, in the region facing the axis of rotation of the drive arm can therefore be increased without at least a partial support of the disk which has just been cut off being lost in the final phase of the cutting process.
  • the receiving device be designed as a conveyor belt which can be driven in a clocked manner and whose conveying direction points away from the axis of rotation of the drive arm.
  • the diameter of the circular knife can be kept particularly small.
  • the construction costs for the device according to the invention can be kept particularly low if the drive arm and the circular knife are driven by a common electric motor.
  • a sufficiently strongly geared-down gearbox output shaft can be used to drive the drive arm, while the circular knife, which takes place, for example, via a belt drive arranged in the drive arm, is driven directly with the correspondingly higher motor speed.
  • the drive arm be driven via a hollow shaft and the circular knife be driven via a knife shaft rotating in the hollow shaft.
  • the device 1 shown in FIGS. 1 to 3 for cutting a strand of material 20 into slices 23 essentially consists of a cutting device 2, a feed device 3 for the strand of material and a receiving device 4 for the slices 23 cut off from the strand 20.
  • the cutting device 2 consists of a drive arm 6 which can be driven about an axis of rotation 5. At the end of the drive arm 6 opposite the axis of rotation 5 there is the axis of rotation 7 of a circular knife 8 which can also be driven in rotation.
  • the drive arm 6 is driven by a hollow shaft 9 which consists of a an electric motor 10 flanged gear 11 is led out.
  • the circular knife 8 is driven within the drive arm 6 via a belt drive 12 and further via a knife shaft 13 arranged inside the hollow shaft 9 Engine speed operated. For this reason, the circular knife 10 rotates - with a translation of the belt drive of 1: 1 - at ten times the speed of the drive arm 6.
  • the same electric motor 10 is used to drive the hollow shaft 9 and the knife jaws 13.
  • FIG. 3 also shows an envelope 14 of all positions of the circular knife 8 rotating in the manner of a planet with the drive arm. From Figure 3 it can also be seen that the radius of the circular knife 8 is slightly larger than the radius of the circle 15 on which the axis of rotation 7 of the circular knife 8 moves.
  • the feed device 3 is designed in a known manner and has a receiving element (not shown) provided with a gripper hook for the hanging strand 20.
  • the feed device 3 is also provided with a feed shaft 19 which is rectangular in cross section.
  • the material strand 20 can be pressed in an end section facing the cutting device 2 against a wall of the feed shaft 19 in order to ensure sufficient fixation during the cutting process.
  • the receiving device 4 is designed in the form of a conveyor belt 21, the storage surface 22 formed by the upper run is arranged inclined relative to the horizontal in such a way that a wedge-shaped gap is formed between the lower end face of the crop strand 20 and the storage surface 22, into which the drive arm 6 Cutting device 2 can immerse in its rotational movement. Due to this inclined orientation of the conveyor belt 21, a sufficiently large area part of a disc 23, which is just being created, comes into contact with the storage area 22. In this way, a sufficient frictional force between the disk 23 and the storage surface 22 is ensured before the disk 23 is completely separated, so that there can be no uncontrolled centrifugal movement of the disk 23 after its complete separation. In this way, in combination with a clocked drive of the conveyor belt 22, an orderly and geometrically accurate shingle deposit of the disks 23 can be achieved.
  • the disk packs picked up by the conveyor belt 21 are forwarded from a further conveyor device (not shown) to suitable packaging or removal devices.
  • the device 1 is not only suitable for shingled or shingled storage of the disks 23. Rather, a stacking of the disks is also possible in a then preferably horizontally oriented receiving device. It is also within the scope of the invention to provide the device 1 with a vertically movable storage surface, the movement of which advantageously with the advancing movement of the material strand 20 is synchronized in order to ensure constant storage conditions for the cut slices during the entire cutting process.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The system has a cutting unit (2) with a circular blade (8), which is rotatable at the rotationally driven cutting unit. The deposit surface (22) of a reception unit (4), accepting the discs (23), is arranged inclined compared to the horizontal in such a manner, so that between the lower endface of the material line (20) and the deposit surface, a wedge shaped gap is formed, in which the drive arm (6) of the cutting unit penetrates.

Description

Die Erfindung betrifft eine Vorrichtung zum Schneiden eines Gutsstrangs in Scheiben mit einer Schneideinrichtung, einer Zuführeinrichtung für den Gutsstrang und einer Aufnahmeeinrichtung für die von dem Gutsstrang abgeschnittenen Scheiben, wobei der Gutsstrang mittels der Zuführeinrichtung im wesentlichen in vertikaler Richtung zu der Schneideinrichtung hin bewegbar ist, mit der von dem unteren Ende des Gutsstrangs in einer im wesentlichen horizontalen Schnittebene Scheiben abschneidbar sind.The invention relates to a device for cutting a strand of material into slices with a cutting device, a feed device for the strand of material and a receiving device for the slices cut from the strand of material, the strand of material being movable in the vertical direction toward the cutting device by means of the feed device which can be cut off from the lower end of the crop strand in a substantially horizontal cutting plane.

Eine derartige Vorrichtung ist aus der DE 44 21 116 C1 bekannt. Die Zuführeinrichtung ist als vertikaler Schacht ausgebildet, in dem der zu schneidende (Gutsstrang an Greiferhaken hängend auf die Schneideinrichtung zubewegt wird. Die Schneideinrichtung selbst ist als in einer horizontalen Ebene rotierendes Sichelmesser ausgebildet, das um eine feststehende Drehachse rotiert und dabei den gesamten Querschnitt des Zuführschachtes überstreicht.Such a device is known from DE 44 21 116 C1. The feeding device is designed as a vertical shaft, in which the strand to be cut is moved towards the cutting device while hanging from the gripper hook. The cutting device itself is designed as a sickle knife rotating in a horizontal plane, which rotates about a fixed axis of rotation and thereby the entire cross section of the feeding shaft sweeps over.

Um beim Ablegen der abgeschnittenen Scheiben auf der als Förderband ausgebildeten Aufnahmeeinrichtung unabhängig von der Höhe eines von den abgeschnittenen Scheiben gebildeten Stapels stets die gleichen Bedingungen zu schaffen, ist bei der bekannten Vorrichtung die Zuführeinrichtung derart kraftschlüssig mit der Aufnahmeeinrichtung verbunden, daß die vertikale Abwärtsbewegung des Gutsstrangs und die vertikale Abwärtsbewegung des jeweils entstehenden Stapels zwangsläufig synchron und mit derselben konstanten Geschwindigkeit erfolgen.In order to always create the same conditions when depositing the cut slices on the receiving device designed as a conveyor belt, regardless of the height of a stack formed by the cut slices, in the known device the feed device is connected to the receiving device in such a positive manner that the vertical downward movement of the material strand and the vertical downward movement of the stack inevitably takes place synchronously and at the same constant speed.

Derartige Vorrichtungen haben sich in der Praxis grundsätzlich bewährt. Prinzipbedingt stoßen sie jedoch dann an ihre Grenzen, wenn - einer allgemeinen Tendenz folgend - die Schneidleistung weiter gesteigert und dabei gleichzeitig die Schneidqualität verbessert werden soll. So läßt sich eine Verbesserung der Schneidqualität in der Regel nur noch über eine Vergrößerung der Schneidenlänge erzielen. Hierdurch wird der effektive Keilwinkel an der Schneidkante des Messers, der die wirksame Schärfe des Messers bestimmt, verkleinert. Es kommt nämlich zu einer Vergrößerung der Geschwindigkeit des Messers senkrecht zur Zustellrichtung im Verhältnis zu dessen Geschwindigkeit in Zustellrichtung, so daß ein stärker ausgeprägter

Figure imgb0001
ziehender Schnitt" vorliegt.Such devices have generally proven themselves in practice. In principle, however, they reach their limits if - following a general trend - the cutting performance is to be further increased and at the same time the cutting quality is to be improved. An improvement in the cutting quality can generally only be achieved by increasing the cutting length. This reduces the effective wedge angle on the cutting edge of the knife, which determines the effective sharpness of the knife. This is because there is an increase in the speed of the knife perpendicular to Infeed direction in relation to its speed in the infeed direction, so that a more pronounced
Figure imgb0001
pulling cut ".

Bei dem verwendeten Sichelmesser ist das Verhältnis der vorstehend genannten Geschwindigkeiten in der gewünschten Weise nur dadurch zu beeinflussen, daß die Schneidenlänge insgesamt verlängert wird, das heißt, eine Spiralform mit einer geringeren Radienzunahme pro Winkeleinheit gewählt wird. Dies führt aufgrund des insgesamt für die Spirale zur Verfügung stehenden begrenzten Winkelbereichs zwangsläufig zu einer Durchmesservergrößerung des Sichelmessers.In the sickle knife used, the ratio of the above-mentioned speeds can only be influenced in the desired manner by lengthening the cutting edge overall, that is to say choosing a spiral shape with a smaller increase in radius per angular unit. Due to the limited angular range available for the spiral, this inevitably leads to an increase in the diameter of the sickle knife.

Hieraus resultiert zum einen der Nachteil, daß die Baugröße derartiger Maschinen anwächst, was angesichts des Trends, solche Maschinen auch in Ladentheken oder Verkaufsräumen mit begrenzten Platzverhältnissen aufzustellen, sehr unerwünscht ist. Zum anderen erhöhen sich der Bauaufwand und die Kosten für derart große Sichelmesser. Außerdem kann die Drehzahl sehr großer Sichelmesser aufgrund der nicht ausgeglichenen Massenkräfte nicht in der erwünschten Weise gesteigert werden, weshalb die bekannten Maschinen hinsichtlich der Schneidleistung vergleichsweise schnell an ihre Grenzen geraten.On the one hand, this results in the disadvantage that the size of such machines increases, which is very undesirable in view of the trend towards installing such machines in shop counters or sales rooms with limited space. On the other hand, the construction effort and the costs for such large sickle knives increase. In addition, the speed of very large sickle knives cannot be increased in the desired manner due to the unbalanced inertial forces, which is why the known machines reach their limits comparatively quickly in terms of cutting performance.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung vorzuschlagen, mit der hohe Schneidleistungen bei gleichzeitig sehr guter Schneidqualtität realisierbar sind. Des weiteren soll der für eine derartige Maschine benötigte Bauraum möglichst klein gehalten werden.The invention has for its object to propose a device with which high cutting performance can be achieved with a very good quality of cutting. Furthermore, the installation space required for such a machine should be kept as small as possible.

Ausgehend von der Vorrichtung der eingangs beschriebenen Art, wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß die Schneideinrichtung ein Kreismesser aufweist, das an einem drehantreibbaren Antriebsarm rotierbar ist.Starting from the device of the type described in the introduction, this object is achieved according to the invention in that the cutting device has a circular knife which can be rotated on a drive arm which can be driven in rotation.

Da bei der erfindungsgemäßen Vorrichtung ein Kreismesser verwendet wird, kann dessen Drehzahl sehr hoch gewählt werden, so daß sich eine sehr große Schnittgeschwindigkeit realisieren läßt. Bei geeigneter Abstimmung der Drehzahl des Antriebsarms und der Drehzahl des Kreismessers (typischerweise liegt das Verhältnis der beiden Drehzahlen etwa bei 1:10, es sind aber auch gänzlich andere Verhältnisse vorstellbar) lassen sich sehr kleine Werte des effektiven Keilwinkels erzielen, so daß die Schärfe derartiger Messer ausgezeichnet ist.Since a circular knife is used in the device according to the invention, its speed can be selected to be very high, so that a very high cutting speed can be achieved. With a suitable coordination of the speed of the drive arm and the speed of the circular knife (typically the ratio of the two speeds is about 1:10, but completely different ratios are also conceivable), very small values of the effective wedge angle can be achieved, so that the sharpness is more like this Knife is excellent.

Aufgrund der vertikalen Vorschubrichtung und der horizontalen Schnittebene werden die im Entstehen begriffenen Scheiben in Folge der Schwerkraft nach unten aus der Schnittebene abgelenkt, so daß hinreichend Raum für die Passage des Antriebsarms vorliegt. Dieser kann sich daher zu einem nicht unbeträchtlichen Teil in den Förderquerschnitt erstrecken, weshalb der Durchmesser des Kreismessers klein gehalten werden kann. Daraus ergibt sich eine insgesamt sehr kompakte Bauform der erfindungsgemäßen Vorrichtung.Due to the vertical feed direction and the horizontal cutting plane, the disks being created are deflected downward from the cutting plane as a result of gravity, so that there is sufficient space for the drive arm to pass through. This can therefore extend to a not inconsiderable extent in the conveyor cross-section, which is why the diameter of the circular knife can be kept small. This results in an overall very compact design of the device according to the invention.

Während die Massenkräfte des schnell rotierenden Kreismessers völlig ausgeglichen sind, treten lediglich bei dem wesentlich langsamer rotierenden Antriebsarm vergleichsweise geringe Massenkräfte auf, die jedoch z. B. mit Hilfe einer Ausgleichswelle ausgeglichen werden können. Da der Antriebsarm gleichförmig umlaufend angetrieben wird, kann insofern auf eine oszillierende Bewegung innerhalb eines Winkelbereichs kleiner als 360° verzichtet werden, wodurch insoweit das Auftreten freier Massenkräfte vermieden wird.While the inertial forces of the rapidly rotating circular knife are completely balanced, comparatively small inertial forces only occur with the drive arm rotating at a much slower rate. B. can be compensated with the help of a balance shaft. Since the drive arm is driven to rotate in a uniform manner, an oscillating movement within an angular range of less than 360 ° can be dispensed with, so that the occurrence of free inertial forces is avoided.

Die erfindungsgemäße Vorrichtung weist somit gegenüber der bekannten mit einem Sichelmesser als Schneideinrichtung ausgestatteten Vorrichtung eine Vielzahl von Vorteilen auf. Auf den ersten Blick mag die verwendete Schneideinrichtung in Form eines an einem Antriebsarm rotierenden Kreismessers aufwendiger als die bekannte Verwendung eines sichelförmigen Messers zu sein. Aufgrund der sehr guten erzielbaren Schneidqualitäten - bei gleichzeitig geringer Baugröße und hoher Schneidleistung - werden diese scheinbaren Nachteile in der Summe jedoch mehr als ausgeglichen.The device according to the invention thus has a number of advantages over the known device equipped with a sickle knife as a cutting device. At first glance, the cutting device used in the form of a circular knife rotating on a drive arm may be more complex than the known use of a sickle-shaped knife. However, due to the very good cutting qualities that can be achieved - with a small size and high cutting performance - these apparent disadvantages are more than offset in total.

Gemäß einer Ausgestaltung der erfindungsgemäßen Vorrichtung wird vorgeschlagen, daß eine die Scheiben aufnehmende Ablagefläche der Aufnahmeeinrichtung derart gegenüber der Horizontalen geneigt angeordnet ist, daß zwischen der unteren Stirnseite des Gutsstrangs und der Ablagefläche ein keilförmiger Spalt gebildet ist, in den der Antriebsarm der Schneideinrichtung eindringt.According to one embodiment of the device according to the invention, it is proposed that a storage surface of the receiving device which receives the disks is arranged inclined relative to the horizontal in such a way that a wedge-shaped gap is formed between the lower end face of the crop strand and the storage surface, into which the drive arm of the cutting device penetrates.

Durch die Neigung der Abnahmefläche wird in dem Bereich des Querschnitts des Gutsstrangs, der am Ende des Schneidvorgangs über einen Restquerschnitt mit der gerade abgeschnittenen Scheibe in Verbindung steht, der vertikale Abstand zwischen der Schneidebene und der Ablagefläche verkürzt. Auf diese Weise kann für die abzuschneidende Scheibe noch vor ihrer vollständigen Abtrennung eine vergrößerte Auflagefläche geschaffen werden. Eine derartige Auflagefläche ist deshalb erforderlich, um in der Endphase des Schneidvorgangs eine unkontrollierte Schleuderbewegung der Scheibe zu verhindern. Diese wird nämlich aufgrund ihrer reibungsbehafteten Teilauflage auf der Ablagefläche an einer unerwünschten Relativbewegung zu der Ablagefläche gehindert.As a result of the inclination of the removal surface, the vertical distance between the cutting plane and the storage surface is shortened in the region of the cross section of the material strand, which is connected to the newly cut disk at the end of the cutting process via a residual cross section. In this way, an enlarged contact surface can be created for the pane to be cut off before it is completely separated. Such a bearing surface is therefore necessary in order to prevent an uncontrolled spinning movement of the disk in the final phase of the cutting process. This is because, due to its frictional partial support on the storage surface, it is prevented from undesired relative movement to the storage surface.

Bei einer wie vorstehend beschrieben geneigten Ablagefläche kann daher der Abstand zwischen der Schnittebene und der Ablagefläche, in dem der Drehachse des Antriebsarms zugewandten Bereich vergrößert werden, ohne daß zumindest eine teilweise Auflage der gerade abgeschnittenen Scheibe in der Endphase des Schneidvorgangs verlorengeht. Hierdurch wird auch bei geringen Abständen zwischen der Auflagefläche und der Schneidebene in dem der Drehachse des Antriebsarms abgewandten Bereich ein hinreichend großer Zwischenraum für den Antriebsarm geschaffen.In the case of an inclined storage surface as described above, the distance between the cutting plane and the storage surface, in the region facing the axis of rotation of the drive arm, can therefore be increased without at least a partial support of the disk which has just been cut off being lost in the final phase of the cutting process. This creates a sufficiently large space for the drive arm even in the case of small distances between the support surface and the cutting plane in the region facing away from the axis of rotation of the drive arm.

Die Erfindung weiter ausgestaltend wird vorgeschlagen, daß die Aufnahmeeinrichtung als Förderband ausgebildet ist, das getaktet antreibbar ist und dessen Förderrichtung von der Drehachse des Antriebsarms wegweist.Developing the invention further, it is proposed that the receiving device be designed as a conveyor belt which can be driven in a clocked manner and whose conveying direction points away from the axis of rotation of the drive arm.

Auf diese Weise ist eine geschuppte bzw. geschindelte Ablage der geschnittenen Scheiben möglich. Aufgrund des getakteten Abtransports wird verhindert, daß der Antriebsarm auch bei dicken Scheiben bzw. knappen Platzverhältnissen mit den abgeschnittenen Scheiben kollidiert, die bei ungetaktetem Förderbandantrieb aufgrund ihrer teilweisen Auflage auf der Ablagefläche in Bereiche transportiert würden, die der Antriebsarm durchläuft.In this way, a scaled or shingled placement of the cut slices is possible. Due to the timed removal, the drive arm is prevented from colliding with the cut disks even in the case of thick disks or limited space, which would be transported in areas without the clocked conveyor belt drive due to their partial support on the storage surface in areas through which the drive arm passes.

Wenn die Drehachse des Kreismessers bei der Drehbewegung des Antriebsarms den Förderquerschnitt der Zuführeinrichtung durchläuft, kann der Durchmesser des Kreismessers besonders klein gehalten werden.If the axis of rotation of the circular knife passes through the conveying cross section of the feed device during the rotational movement of the drive arm, the diameter of the circular knife can be kept particularly small.

Der Bauaufwand für die erfindungsgemäße Vorrichtung läßt sich besonders niedrig halten, wenn der Antriebsarm und das Kreismesser von einem gemeinsamen Elektromotor angetrieben werden. Bei Verwendung eines Getriebemotors läßt sich dabei eine hinreichend stark untersetzte Getriebeausgangswelle für den Antrieb des Antriebsarms nutzen, während der Antrieb des Kreismessers, der beispielsweise über einen in dem Antriebsarm angeordneten Riementrieb erfolgt, direkt mit der entsprechend höheren Motordrehzahl erfolgt.The construction costs for the device according to the invention can be kept particularly low if the drive arm and the circular knife are driven by a common electric motor. When using a geared motor, a sufficiently strongly geared-down gearbox output shaft can be used to drive the drive arm, while the circular knife, which takes place, for example, via a belt drive arranged in the drive arm, is driven directly with the correspondingly higher motor speed.

Ferner wird vorgeschlagen, daß der Antrieb des Antriebsarms über eine Hohlwelle und der Antrieb des Kreismessers über eine in der Hohlwelle rotierende Messerwelle erfolgt.It is also proposed that the drive arm be driven via a hollow shaft and the circular knife be driven via a knife shaft rotating in the hollow shaft.

Schließlich ist noch vorgesehen, den Antrieb des Antriebsarms unterhalb der Schnittebene anzuordnen.Finally, provision is made to arrange the drive of the drive arm below the cutting plane.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels einer Schneidvorrichtung, die in der Zeichnung dargestellt ist, näher erläutert. Es zeigt:

Figur 1
eine Seitenansicht einer Vorrichtung gemäß der Erfindung,
Figur 2
eine Vorderansicht der Vorrichtung gemäß Figur 1 und
Figur 3
eine Draufsicht auf die Vorrichtung gemäß Figur 1.
The invention is explained in more detail below using an exemplary embodiment of a cutting device, which is shown in the drawing. It shows:
Figure 1
a side view of a device according to the invention,
Figure 2
a front view of the device of Figure 1 and
Figure 3
2 shows a plan view of the device according to FIG. 1.

Die in den Figuren 1 bis 3 gezeigte Vorrichtung 1 zum Schneiden eines Gutsstrangs 20 in Scheiben 23 besteht im wesentlichen aus einer Schneidvorrichtung 2, einer Zuführeinrichtung 3 für den Gutsstrang und einer Aufnahmeeinrichtung 4 für die von dem Gutsstrang 20 abgeschnittenen Scheiben 23.The device 1 shown in FIGS. 1 to 3 for cutting a strand of material 20 into slices 23 essentially consists of a cutting device 2, a feed device 3 for the strand of material and a receiving device 4 for the slices 23 cut off from the strand 20.

Die Schneideinrichtung 2 besteht aus einem um eine Drehachse 5 antreibbaren Antriebsarm 6. An dem der Drehachse 5 gegenüberliegenden Ende des Antriebsarms 6 befindet sich die Drehachse 7 eines ebenfalls drehantreibbaren Kreismessers 8. Der Antrieb des Antriebsarms 6 erfolgt über eine Hohlwelle 9, die aus einem an einen Elektromotor 10 angeflanschten Getriebe 11 herausgeführt ist. Der Antrieb des Kreismessers 8 erfolgt innerhalb des Antriebsarms 6 über einen Riementrieb 12 und des weiteren über eine innerhalb der Hohlwelle 9 angeordnete Messerwelle 13. Während die Hohlwelle mit einer gegenüber der Motordrehzahl um den Faktor 10 verminderten Drehzahl rotiert, wird die Motorwelle 13 mit der vollen Motordrehzahl betrieben. Aus diesem Grund rotiert das Kreismesser 10 - bei einer Übersetzung des Riementriebs von 1:1 - mit zehnfacher Drehzahl des Antriebsarms 6. Für den Antrieb der Hohlwelle 9 und der Messerweile 13 dient derselbe Elektromotor 10.The cutting device 2 consists of a drive arm 6 which can be driven about an axis of rotation 5. At the end of the drive arm 6 opposite the axis of rotation 5 there is the axis of rotation 7 of a circular knife 8 which can also be driven in rotation. The drive arm 6 is driven by a hollow shaft 9 which consists of a an electric motor 10 flanged gear 11 is led out. The circular knife 8 is driven within the drive arm 6 via a belt drive 12 and further via a knife shaft 13 arranged inside the hollow shaft 9 Engine speed operated. For this reason, the circular knife 10 rotates - with a translation of the belt drive of 1: 1 - at ten times the speed of the drive arm 6. The same electric motor 10 is used to drive the hollow shaft 9 and the knife jaws 13.

In den Figuren 1 bis 3 ist das Kreismesser 8 bzw. dessen Umrißlinie in verschiedenen Positionen dargestellt. In Figur 3 ist auch eine Einhüllende 14 sämtlicher Stellungen des planetenartig mit dem Antriebsarm rotierenden Kreismessers 8 dargestellt. Aus Figur 3 läßt sich ebenfalls entnehmen, daß der Radius des Kreismessers 8 geringfügig größer als der Radius des Kreises 15 ist, auf dem sich die Drehachse 7 des Kreismessers 8 bewegt.In Figures 1 to 3, the circular knife 8 or its outline is shown in different positions. FIG. 3 also shows an envelope 14 of all positions of the circular knife 8 rotating in the manner of a planet with the drive arm. From Figure 3 it can also be seen that the radius of the circular knife 8 is slightly larger than the radius of the circle 15 on which the axis of rotation 7 of the circular knife 8 moves.

In Figur 3 ist des weiteren dargestellt, daß der Antriebsarm 6 entgegen dem Uhrzeigersinn (Pfeil 16) rotiert, während sich das Kreismesser 8 im Uhrzeigersinn (Pfeil 17) dreht. Während der Rotation des Antriebsarms 6 dringt die Drehachse 7 des Kreismessers 8 in den rechteckförmigen Querschnitt 18 der Zuführeinrichtung 3 ein.In Figure 3 it is further shown that the drive arm 6 rotates counterclockwise (arrow 16), while the circular knife 8 rotates clockwise (arrow 17). During the rotation of the drive arm 6, the axis of rotation 7 of the circular knife 8 penetrates into the rectangular cross section 18 of the feed device 3.

Die Zuführeinrichtung 3 ist in bekannter Weise ausgeführt und weist ein nicht dargestelltes mit Greiferhaken versehenes Aufnahmeelement für den hängend gelagerten Gutsstrang 20 auf. Die Zuführeinrichtung 3 ist ferner mit einem im Querschnitt rechteckförmigen Zuführschacht 19 versehen. Der Gutsstrang 20 ist in einem der Schneideinrichtung 2 zugewandten Endabschnitt an eine Wand des Zuführschachts 19 anpreßbar, um für eine hinreichende Fixierung während des Schneidvorgangs zu sorgen.The feed device 3 is designed in a known manner and has a receiving element (not shown) provided with a gripper hook for the hanging strand 20. The feed device 3 is also provided with a feed shaft 19 which is rectangular in cross section. The material strand 20 can be pressed in an end section facing the cutting device 2 against a wall of the feed shaft 19 in order to ensure sufficient fixation during the cutting process.

Die Aufnahmeeinrichtung 4 ist in Form eines Förderbandes 21 ausgebildet, dessen von dem Obertrum gebildete Ablagefläche 22 gegenüber der Horizontalen derart geneigt angeordnet ist, daß zwischen der unteren Stirnseite des Gutsstrangs 20 und der Ablagefläche 22 ein keilförmiger Spalt gebildet ist, in den der Antriebsarm 6 der Schneideinrichtung 2 bei seiner Drehbewegung eintauchen kann. Aufgrund dieser geneigten Ausrichtung des Förderbandes 21 kommt ein hinreichend großer Flächenteil einer gerade im Entstehen begriffenen Scheibe 23 mit der Ablagefläche 22 in Berührung. Auf diese Weise ist vor der vollständigen Abtrennung der Scheibe 23 für eine ausreichende Reibkraft zwischen der Scheibe 23 und der Ablagefläche 22 gewährleistet, so daß es zu keiner unkontrollierten Schleuderbewegung der Scheibe 23 nach deren vollständiger Abtrennung kommen kann. Somit kann in Verbindung mit einem getakteten Antrieb des Förderbandes 22 eine geordnete und geometriegenaue Schindelablage der Scheiben 23 erzielt werden.The receiving device 4 is designed in the form of a conveyor belt 21, the storage surface 22 formed by the upper run is arranged inclined relative to the horizontal in such a way that a wedge-shaped gap is formed between the lower end face of the crop strand 20 and the storage surface 22, into which the drive arm 6 Cutting device 2 can immerse in its rotational movement. Due to this inclined orientation of the conveyor belt 21, a sufficiently large area part of a disc 23, which is just being created, comes into contact with the storage area 22. In this way, a sufficient frictional force between the disk 23 and the storage surface 22 is ensured before the disk 23 is completely separated, so that there can be no uncontrolled centrifugal movement of the disk 23 after its complete separation. In this way, in combination with a clocked drive of the conveyor belt 22, an orderly and geometrically accurate shingle deposit of the disks 23 can be achieved.

Die von dem Förderband 21 aufgenommenen Scheibenpakete werden von einer nicht dargestellten weiteren Fördereinrichtung zu geeigneten Verpackungs- oder Abnahmeeinrichtungen weitergeleitet.The disk packs picked up by the conveyor belt 21 are forwarded from a further conveyor device (not shown) to suitable packaging or removal devices.

Die Vorrichtung 1 eignet sich jedoch nicht nur zur geschuppten bzw. geschindelten Ablage der Scheiben 23. Vielmehr ist bei einer dann vorzugsweise horizontal ausgerichteten Aufnahmeeinrichtung auch eine gestapelte Ablage der Scheiben möglich. Es liegt ebenfalls im Rahmen der Erfindung, die Vorrichtung 1 mit einer vertikal verfahrbaren Ablagefläche zu versehen, deren Bewegung vorteilhafterweise mit der Vorschubbewegung des Gutsstrangs 20 synchronisiert ist, um während des gesamten Schneidvorgangs gleichbleibende Ablagebedingungen für die geschnittenen Scheiben zu gewährleisten.However, the device 1 is not only suitable for shingled or shingled storage of the disks 23. Rather, a stacking of the disks is also possible in a then preferably horizontally oriented receiving device. It is also within the scope of the invention to provide the device 1 with a vertically movable storage surface, the movement of which advantageously with the advancing movement of the material strand 20 is synchronized in order to ensure constant storage conditions for the cut slices during the entire cutting process.

Claims (7)

Vorrichtung zum Schneiden eines Gutsstrangs in Scheiben mit einer Schneideinrichtung, einer Zuführeinrichtung für den Gutsstrang und einer Aufnahmeeinrichtung für die von dem Gutsstrang abgeschnittenen Scheiben, wobei der Gutsstrang mittels der Zuführeinrichtung im wesentlichen in veitikaler Richtung zu der Schneideinrichtung hin bewegbar ist, mit der von dem unteren Ende des Gutsstrangs in einer im wesentlichen horizontalen Schnittebene Scheiben abschneidbar sind, dadurch gekennzeichnet, daß die Schneideinrichtung (2) ein Kreismesser (8) aufweist, das an einem drehantreibbaren Antriebsarm (6) rotierbar ist.Device for cutting a strand of material into slices with a cutting device, a feed device for the strand of material and a receiving device for the slices cut from the strand of material, the strand of material being movable by means of the feed device essentially in a veitical direction towards the cutting device, with that of the lower one Slices can be cut off at the end of the crop strand in an essentially horizontal cutting plane, characterized in that the cutting device (2) has a circular knife (8) which can be rotated on a drive arm (6) which can be driven in rotation. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine die Scheiben (23) aufnehmende Ablagefläche (22) der Aufnahmeeinrichtung (4) derart gegenüber der Horizontalen geneigt angeordnet ist, daß zwischen der unteren Stirnseite des Gutsstrangs (20) und der Ablagefläche (22) ein keilförmiger Spalt gebildet ist, in den der Antriebsarm (6) der Schneideinrichtung (2) eindringt.Apparatus according to claim 1, characterized in that a storage surface (22) of the receiving device (4) receiving the disks (23) is arranged so that it is inclined relative to the horizontal in such a way that between the lower end face of the crop strand (20) and the storage surface (22) wedge-shaped gap is formed, into which the drive arm (6) of the cutting device (2) penetrates. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Aufnahmeeinrichtung (4) als Förderband (21) ausgebildet ist, das getaktet antreibbar ist und dessen Förderrichtung von der Drehachse (5) des Antriebsarms (6) wegweist.Apparatus according to claim 1 or 2, characterized in that the receiving device (4) is designed as a conveyor belt (21) which can be driven in a clocked manner and whose conveying direction points away from the axis of rotation (5) of the drive arm (6). Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Drehachse (7) des Kreismessers (8) bei der Drehbewegung des Antriebsarms (6) den Förderquerschnitt (18) der Zuführeinrichtung (4) durchläuft.Device according to one of claims 1 to 3, characterized in that the axis of rotation (7) of the circular knife (8) passes through the conveying cross section (18) of the feed device (4) during the rotational movement of the drive arm (6). Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Antriebsarm (6) und das Kreismesser (8) von einem gemeinsamen Elektromotor (10) antreibbar sind.Device according to one of claims 1 to 4, characterized in that the drive arm (6) and the circular knife (8) can be driven by a common electric motor (10). Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Antrieb des Antriebsarms (6) über eine Hohlwelle (9) und der Antrieb des Kreismessers (8) über eine in der Hohlwelle (9) rotierende Messerwelle (13) erfolgt.Device according to one of claims 1 to 5, characterized in that the drive arm (6) is driven via a hollow shaft (9) and the circular knife (8) is driven via a knife shaft (13) rotating in the hollow shaft (9). Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Antrieb des Antriebsarms (6) unterhalb der Schnittebene angeordnet ist.Device according to one of claims 1 to 6, characterized in that the drive of the drive arm (6) is arranged below the cutting plane.
EP99108048A 1998-05-07 1999-04-23 Slicing machine for products in loaf form Expired - Lifetime EP0955135B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19820269A DE19820269C2 (en) 1998-05-07 1998-05-07 Device for cutting a strand of material into slices
DE19820269 1998-05-07

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EP0955135A3 EP0955135A3 (en) 2002-03-06
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AT (1) ATE244622T1 (en)
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HK (1) HK1024439A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10004600A1 (en) * 2000-02-03 2001-08-09 Biforce Anstalt Vaduz Produce slicer drive system comprises differentially diametered disks rotating or fixed to housing and traveled by toothed belt as drive connection.
US8408109B2 (en) 2007-10-22 2013-04-02 Formax, Inc. Food article feed apparatus for a food article slicing machine

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Publication number Priority date Publication date Assignee Title
US2227683A (en) * 1938-09-26 1941-01-07 Ind Patents Corp Evener and stacker
US2414152A (en) * 1943-05-20 1947-01-14 Aldrich L Jackson Automatic food slicer and slice counting machine
US3867858A (en) * 1973-07-30 1975-02-25 Gorton Corp Frozen fish cutter
US3842698A (en) * 1973-09-11 1974-10-22 C Fitch Slicing machine for slicing a food product or the like
DE2351980A1 (en) * 1973-10-17 1975-04-30 Hans Neuner Bacon slicer with rotating cutting arm - has two cutter discs with independent rotation
US3972256A (en) * 1975-05-30 1976-08-03 Ross Henry M Meat slicer
US4177703A (en) * 1978-04-17 1979-12-11 Cavier Adolf J J F Slicing machine for salmon
WO1985004833A1 (en) * 1984-04-16 1985-11-07 Newmac A/S An apparatus for cutting a block of food into slices
US4685364A (en) * 1985-05-17 1987-08-11 Bettcher Industries, Inc. Rotary slicer for comestible products

Also Published As

Publication number Publication date
ATE244622T1 (en) 2003-07-15
DE19820269A1 (en) 1999-11-11
HK1024439A1 (en) 2000-10-13
DE59906232D1 (en) 2003-08-14
DE19820269C2 (en) 2000-06-21
EP0955135A3 (en) 2002-03-06
EP0955135B1 (en) 2003-07-09

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