EP2896490B1 - Circular blade drive, in particular for bread cutting machines - Google Patents

Circular blade drive, in particular for bread cutting machines Download PDF

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Publication number
EP2896490B1
EP2896490B1 EP14197326.3A EP14197326A EP2896490B1 EP 2896490 B1 EP2896490 B1 EP 2896490B1 EP 14197326 A EP14197326 A EP 14197326A EP 2896490 B1 EP2896490 B1 EP 2896490B1
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EP
European Patent Office
Prior art keywords
circular blade
drive
shaft
circular
wheel
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EP14197326.3A
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German (de)
French (fr)
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EP2896490A1 (en
Inventor
Johannes Hartmann
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GHD Georg Hartmann Maschinenbau GmbH
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Ghd Georg Hartmann Maschinenbau GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—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
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut

Definitions

  • the invention relates to a circular blade drive according to the preamble of patent claim 1.
  • Generic circular blade drives for a bread slicer are from the EP 0 736 361 A2 and the US 5,724,874 A known.
  • a bread slicer with variable slicing thickness which is designed as a table cutting machine and in which the rotating circular knife is attached to a rocker, which performs an oscillating movement. It drives a first drive motor via a shaft to the circular blade and a second drive motor drives via a bracket to the rocker.
  • a control device and a contact switch are required to bring the rocker with the rotatably mounted thereon circular blade in the cutting position.
  • a circumferential movement of the circular blade bearing rocker is not possible because of the limited height of the table machine is not enough space for the circulation of the rocker with the circular blade available.
  • the bread cutter has a complicated construction and it can not be achieved a constant speed during the oscillating movement of the rocker.
  • a drive of a circular blade is described in a table-bread cutting machine, which has a mounted between two end positions mounted on a rocker, driven over its center rotating circular knife.
  • a drive motor begins to work, which simultaneously drives a drive shaft and a crank drive.
  • the circular blade is set in rotation via a lower toothed belt wheel, a toothed belt and an upper toothed belt wheel on the rocker and at the same time the circular blade is moved via the rocker from its lower end position to the bread.
  • the direction of movement of the rocker is reversed over the crank mechanism and the circular blade again reaches its lower end position.
  • neither a circumferential movement of the circular blade bearing rocker nor a separate speed control for the rotation of the circular blade and the circular motion of the rocker are possible.
  • the invention has for its object to provide a circular blade drive in bread slicing machines, in which a separate controllability of the rotation and the circumferential movement of the mounted on a rocker circular blade is possible and in which the speed during the orbital motion of the circular blade is constant.
  • a transmission is provided, wherein the first motor means drives a circular blade shaft rotating with the circular blade held thereon and the second motor means via a rocker shaft rotatably drives the rocker.
  • the rocker shaft in the center of gravity of the rocker is fixed and at a distance from the circular blade shaft is rotatably mounted on the rocker.
  • a drive wheel and a driven wheel are provided, which are designed as helical cylindrical wheels and are paired with each other for positive force transmission, so that they mesh with each other.
  • the teeth are at an angle to the gear axis and there are always two or more teeth in the gear pair at the same time in Contact. Due to the helical gearing, the two wheels run quieter than spur gears, because of the gradual meshing, and they can transmit greater forces, because they have a larger contact surface on the tooth flanks. The resulting axial forces that push the gears apart laterally are absorbed by a corresponding storage.
  • the two shaft axes of the drive wheel and the driven wheel are arranged parallel to each other.
  • the diameters of the two wheels determine the gear ratio for driving the circular blade shaft.
  • a preferred embodiment of the circular blade drive according to the invention has a speed-up ratio, ie the driven wheel performs more revolutions than the drive wheel, so that the transmission ratio is greater than 1.0.
  • the first motor device has a first drive motor whose drive axle is coupled to the drive wheel via a first toothed belt.
  • the driven wheel is coupled to the circular blade shaft to transmit the torque of the first drive motor to the circular blade.
  • the circular blade is held at one end of the circular blade shaft and at the opposite end of the circular blade shaft, the driven wheel is fixed.
  • the second motor device has a second drive motor whose drive shaft is coupled via a second toothed belt to the rocker shaft in order to transmit the torque of the second drive motor to the rocker.
  • the rocker is held firmly at one end of the rocker shaft and at the opposite end of the rocker shaft, the second toothed belt engages.
  • the circular blade is held interchangeable by means of a holding device on the circular blade shaft.
  • the circular blade is quickly and easily interchangeable with wear of the toothing or depending on the requirements of a new or different circular blade.
  • the circular knife shaft and the rocker shaft which simultaneously form the two shaft axes of the transmission for the drive wheel and the driven wheel, are guided in rolling bearings to the axial thrust force of the helical cylindrical wheels take.
  • the drive wheel is guided in bearings rotatably around the swingarm shaft.
  • the circular blade drive according to the invention is arranged on a base support, so that it can be easily inserted into the machine frame of a bread slicer and can be easily removed in the same way for maintenance purposes.
  • the invention also relates to the use of the above-described circular knife drive in bread slicing machines for slicing different types of strand bread in a continuous process.
  • the strand bread is placed on one side of the transport channel, is continuously transported intermittently through the transport channel and thereby crosses the cutting region of the circular blade, and comes cut out on the opposite side of the transport channel.
  • the cutting speed is up to 600 slices per minute and is infinitely variable depending on the requirements.
  • Fig. 1 schematically shows a preferred embodiment of the circular knife drive 1 according to the invention in isometric view.
  • a transmission 7 in which a first motor means via a drive wheel 8 and a driven wheel 9 rotatably drives a circular blade shaft 12 arranged on the top with the circular blade 2 held thereon.
  • the first motor device has a first drive motor 3, whose drive shaft via a first toothed belt 5 is coupled to the drive wheel 8.
  • the driven gear 9 is coupled to the circular blade shaft 12 to transmit the torque of the first drive motor 3 to the circular blade 2.
  • the drive wheel 8 and the driven wheel 9 are paired as helical cylindrical wheels with each other for positive power transmission.
  • the transmission 7 comprises a second motor device which drives the rocker 10 revolving around a centrally arranged rocker shaft 11.
  • the second motor device to a second drive motor 4
  • the drive shaft is coupled via a second toothed belt 6 with the swing arm 11 to transmit the torque of the second drive motor 4 to the rocker 10.
  • the circular blade 2 is held on the right side by means of a holding device 13 interchangeable on the circular blade shaft 12.
  • the circular knife drive 1 is arranged on a base support 14.
  • Fig. 2 shows the circular blade drive 1 in a sectional view.
  • the drive wheel 8 is rotatably arranged on the rocker shaft 11 and the driven wheel 9 is fixedly arranged on the circular blade shaft 12. In the contact region of the drive wheel 8 with the driven wheel 9, two teeth touch simultaneously.
  • the circular blade 2 is held interchangeable by means of the holding device 13 and the left-hand end of the circular blade shaft 12, the driven wheel 9 is held firmly by means of screw.
  • the first toothed belt 5 engages.
  • the rocker 10 is held firmly by means of screw and the left side end of the rocker shaft 11 engages the second toothed belt 6 at.
  • rocker shaft 11 and the circular blade shaft 13 and the drive wheel 8 are guided in a plurality of rolling bearings 15.
  • Fig. 3 shows the circular blade drive 1 in front view, wherein substantially the circular blade 2 are shown with the rocker 10.
  • the rocker shaft 11 is fixedly arranged in the weight center of the rocker 10, so that the circular blade 2 is moved in a circumferential movement U about the rocker shaft 11.
  • the circular blade shaft 12 is rotatably disposed on the rocker 10 at a distance from the center of gravity of the rocker 10, wherein the circular blade 2 is driven in a rotation R about the circular blade shaft 12.
  • the first circular path K1 is described by the rotating R circular blade 2, and the second circular path K2 about the oscillating shaft 11 by the rocker 10.
  • the transport channel 17 with the bread 16 conveyed therein is arranged.
  • the rotating R circular blade 2 enters the transport channel 17 in the cutting position and cuts the bread 16 continuously conveyed intermittently through the transport channel 17. Thereafter, the circular blade 2 again emerges from the transport channel 17 and passes through the outside of the transport channel 17 Room.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Food-Manufacturing Devices (AREA)
  • Nonmetal Cutting Devices (AREA)

Description

Die Erfindung betrifft einen Kreismesserantrieb nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a circular blade drive according to the preamble of patent claim 1.

Mit Kreismessern ausgerüstete Brotschneidemaschinen sind aus der Praxis bekannt. Alle diese Maschinen, von denen stellvertretend die im entsprechenden Prospekt der Firma Treif Maschinenbau GmbH in 57641 Oberlahr dargestellte "DISKUS 500+" genannt werden soll, verfügen über ein Maschinengestell, in welches ein Transportkanal für das Brot integriert ist. In der Schneidposition tritt das rotierende Kreismesser in den Transportkanal ein und zerschneidet bei dieser Bewegung das Brot. Danach tritt das Kreismesser wieder aus dem Transportkanal für das Brot aus und durchläuft einen außerhalb des Transportkanals vorhandenen Raum. In dieser Zeit wird das Brot um eine zu schneidende Breite zum Messer verschoben, um danach in beschriebener Weise wiederum vom Kreismesser geschnitten zu werden. Außerhalb des Transportkanals ist ein gemeinsamer Antrieb für die Rotation des Kreismessers und die umlaufende Bewegung des Kreismessers in den Transportkanal hinein bzw. aus dem Transportkanal heraus, der in der Regel ein Planetengetriebe umfasst.With bread knives equipped bread cutting machines are known in practice. All of these machines, of which the "DISKUS 500+" shown in the corresponding brochure of Treif Maschinenbau GmbH in 57641 Oberlahr is representative, have a machine frame in which a transport channel for the bread is integrated. In the cutting position, the rotating circular knife enters the transport channel and cuts the bread during this movement. Thereafter, the circular blade again emerges from the transport channel for the bread and passes through an existing outside the transport channel space. During this time, the bread is moved to a width to be cut to the knife, in order then to be cut again in the manner described by the circular knife. Outside the transport channel is a common drive for the rotation of the circular blade and the circumferential movement of the circular blade in the transport channel into or out of the transport channel, which generally comprises a planetary gear.

In der Praxis kommt es jedoch häufiger vor, dass durch verschiedene Brotsorten mit unterschiedlicher Konsistenz und/oder Formgebung die vorhandene Brotschneidemaschine bei Sortimentsänderungen in ihrer Geschwindigkeit bezüglich der Rotation des Kreismessers und die umlaufende Bewegung des Kreismessers getrennt geregelt werden muss.In practice, however, it is more common that must be regulated by different breads with different consistency and / or shape of the existing bread slicer for assortment changes in their speed with respect to the rotation of the circular blade and the circumferential movement of the circular blade separately.

Gattungsgemäße Kreismesserantriebe für eine Brotschneidemaschine sind aus der EP 0 736 361 A2 und der US 5,724,874 A bekannt.Generic circular blade drives for a bread slicer are from the EP 0 736 361 A2 and the US 5,724,874 A known.

In der EP 0 612 593 B1 ist ein Brotschneider mit variabler Aufschnittdicke offenbart, der als Tisch-Schneidemaschine ausgeführt ist und bei dem das rotierende Kreismesser an einer Schwinge befestigt ist, die eine oszillierende Bewegung vollführt. Dabei treibt ein erster Antriebsmotor über eine Welle das Kreismesser an und ein zweiter Antriebsmotor treibt über einen Bügel die Schwinge an. Zusätzlich sind eine Kontrolleinrichtung und ein Kontaktschalter erforderlich, um die Schwinge mit dem daran drehbar gelagerten Kreismesser in die Schneidposition zu bringen. Eine umlaufende Bewegung der das Kreismesser tragenden Schwinge ist nicht möglich, da aufgrund der begrenzten Bauhöhe der Tischmaschine nicht hinreichend Raum für den Umlauf der Schwinge mit dem Kreismesser zur Verfügung steht. Darüber hinaus weist der Brotschneider eine komplizierte Konstruktion auf und es kann keine konstante Geschwindigkeit während der oszillierenden Bewegung der Schwinge erzielt werden.In the EP 0 612 593 B1 discloses a bread slicer with variable slicing thickness, which is designed as a table cutting machine and in which the rotating circular knife is attached to a rocker, which performs an oscillating movement. It drives a first drive motor via a shaft to the circular blade and a second drive motor drives via a bracket to the rocker. In addition, a control device and a contact switch are required to bring the rocker with the rotatably mounted thereon circular blade in the cutting position. A circumferential movement of the circular blade bearing rocker is not possible because of the limited height of the table machine is not enough space for the circulation of the rocker with the circular blade available. In addition, the bread cutter has a complicated construction and it can not be achieved a constant speed during the oscillating movement of the rocker.

In der DE 20 2005 006 834 U1 ist ein Transportkanal zum Schneiden von Lebensmitteln beschrieben, bei dem das rotierende Kreismesser in bekannter Weise durch ein Planetengetriebe angetrieben wird, so dass das rotierende Kreismesser gleichzeitig auf einer Kreisbahn bewegt wird. Dabei wird das Planetengetriebe über einen einzigen Antriebsmotor angetrieben, so dass keine getrennte Geschwindigkeitsregelung für die Rotation des Kreismessers und die Kreisbewegung der Schwinge durchführbar ist.In the DE 20 2005 006 834 U1 is a transport channel for cutting food described in which the rotating circular blade is driven in a known manner by a planetary gear, so that the rotating circular blade is moved simultaneously on a circular path. In this case, the planetary gear is driven by a single drive motor, so that no separate speed control for the rotation of the circular blade and the circular motion of the rocker is feasible.

In der DE 10 2011 010 935 A1 ist ein Antrieb eines Kreismessers in einer Tisch-Brotschneidemaschine beschrieben, der über ein zwischen zwei Endlagen bewegtes an einer Schwinge gelagertes, über sein Zentrum angetriebenes rotierendes Kreismesser verfügt. Mit dem Erreichen der Schnittposition beginnt ein Antriebsmotor zu arbeiten, der gleichzeitig eine Antriebswelle und einen Kurbeltrieb antreibt. Dadurch wird über ein unteres Zahnriemenrad, ein Zahnriemen und ein oberes Zahnriemenrad an der Schwinge das Kreismesser in Drehung versetzt und gleichzeitig das Kreismesser über die Schwinge aus ihrer unteren Endlage zum Brot bewegt. Nach Erreichen der oberen Endlage des Kreismessers kehrt sich über den Kurbeltrieb die Bewegungsrichtung der Schwinge um und das Kreismesser gelangt wiederum in seine untere Endlage. Bei dieser Ausführung sind weder eine umlaufende Bewegung der das Kreismesser tragenden Schwinge noch eine getrennte Geschwindigkeitsregelung für die Rotation des Kreismessers und die Kreisbewegung der Schwinge möglich.In the DE 10 2011 010 935 A1 a drive of a circular blade is described in a table-bread cutting machine, which has a mounted between two end positions mounted on a rocker, driven over its center rotating circular knife. When the cutting position is reached, a drive motor begins to work, which simultaneously drives a drive shaft and a crank drive. As a result, the circular blade is set in rotation via a lower toothed belt wheel, a toothed belt and an upper toothed belt wheel on the rocker and at the same time the circular blade is moved via the rocker from its lower end position to the bread. After reaching the upper end position of the circular blade, the direction of movement of the rocker is reversed over the crank mechanism and the circular blade again reaches its lower end position. In this embodiment, neither a circumferential movement of the circular blade bearing rocker nor a separate speed control for the rotation of the circular blade and the circular motion of the rocker are possible.

Der Erfindung liegt die Aufgabe zugrunde, einen Kreismesserantrieb in Brotschneidemaschinen bereitzustellen, bei dem eine getrennte Regelbarkeit der Rotation und der umlaufenden Bewegung des an einer Schwinge gelagerten Kreismessers möglich ist und bei dem die Geschwindigkeit während der umlaufenden Bewegung des Kreismessers konstant ist.The invention has for its object to provide a circular blade drive in bread slicing machines, in which a separate controllability of the rotation and the circumferential movement of the mounted on a rocker circular blade is possible and in which the speed during the orbital motion of the circular blade is constant.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Die Verwendung ist in Anspruch 11 angegeben.
Ausführungsformen der Erfindung sind in den Unteransprüchen beschrieben.This object is solved by the features of claim 1. The use is specified in claim 11.
Embodiments of the invention are described in the subclaims.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass ein Getriebe vorgesehen ist, bei dem die erste Motoreinrichtung eine Kreismesserwelle mit dem daran gehaltenen Kreismesser rotierend antreibt und die zweite Motoreinrichtung über eine Schwingenwelle die Schwinge umlaufend antreibt. Gleichzeitig ist die Schwingenwelle im Gewichtsschwerpunkt der Schwinge fest angeordnet und im Abstand dazu ist die Kreismesserwelle drehbar auf der Schwinge angeordnet. Durch diese Anordnung liegt sowohl die Schwingenwelle mit der daran gehaltenen Schwinge als auch das Antriebsrad für den Antrieb des Kreismessers deckungsgleich in der ersten Wellenachse des Getriebes. In der Folge wird die Rotation des Kreismessers sowie die umlaufende Bewegung der Schwinge über diese erste Wellenachse ausgeführt, wodurch die Drehzahl der Kreismesserwelle und damit des Kreismessers eine Funktion der Geschwindigkeitsdifferenz der ersten Motoreinrichtung sowie der zweiten Motoreinrichtung ist. Auf diese Weise ist eine getrennte Geschwindigkeitsregelung für die Rotation des Kreismessers und die umlaufende Bewegung der Schwinge zur Bewegung des Kreismessers in die Schneidposition möglich, und trotzdem wird immer eine gleichbleibende Geschwindigkeit der Rotation des Kreismessers während der umlaufenden Bewegung des an einer Schwinge gelagerten Kreismessers erzielt.The object is achieved in that a transmission is provided, wherein the first motor means drives a circular blade shaft rotating with the circular blade held thereon and the second motor means via a rocker shaft rotatably drives the rocker. At the same time the rocker shaft in the center of gravity of the rocker is fixed and at a distance from the circular blade shaft is rotatably mounted on the rocker. By this arrangement, both the rocker shaft with the rocker held thereon and the drive wheel for driving the circular blade is congruent in the first shaft axis of the transmission. As a result, the rotation of the circular blade and the orbital motion of the rocker are carried out via this first shaft axis, whereby the rotational speed of the circular blade shaft and thus the circular blade is a function of the speed difference of the first motor means and the second motor means. In this way, a separate speed control for the rotation of the circular blade and the orbital movement of the rocker for moving the circular blade into the cutting position is possible, and yet a constant speed of rotation of the circular blade is always achieved during the orbital motion of the circular blade mounted on a rocker.

In dem Getriebe sind ein Antriebsrad und ein getriebenes Rad vorgesehen, die als schrägverzahnte Zylinderräder ausgeführt und miteinander zur formschlüssigen Kraftübertragung gepaart sind, so dass sie miteinander kämmen. Bei den schrägverzahnten Rädern verlaufen die Zähne im Winkel zur Zahnradachse und es befinden sich bei dem Zahnradpaar immer zwei oder mehr Zähne gleichzeitig in Kontakt. Durch die Schrägverzahnung laufen die beiden Räder ruhiger als geradverzahnte Räder, wegen dem allmählichen Zahneingriff, und sie können größere Kräfte übertragen, weil sie eine größere Auflagefläche an den Zahnflanken besitzen. Die hierdurch auftretenden Axialkräfte, die die Zahnräder seitlich auseinander schieben, werden von einer entsprechenden Lagerung aufgenommen. Hierbei sind die beiden Wellenachsen des Antriebsrades sowie des getriebenen Rades parallel zueinander angeordnet. Die Durchmesser der beiden Räder bestimmen das Übersetzungsverhältnis für den Antrieb der Kreismesserwelle. Eine bevorzugte Ausführungsform des erfindungsgemäßen Kreismesserantriebs weist eine Übersetzung ins Schnelle auf, d.h. das getriebene Rad führt mehr Umdrehungen aus als das Antriebsrad, so dass das Übersetzungsverhältnis größer als 1,0 ist.In the transmission, a drive wheel and a driven wheel are provided, which are designed as helical cylindrical wheels and are paired with each other for positive force transmission, so that they mesh with each other. In the helical gears, the teeth are at an angle to the gear axis and there are always two or more teeth in the gear pair at the same time in Contact. Due to the helical gearing, the two wheels run quieter than spur gears, because of the gradual meshing, and they can transmit greater forces, because they have a larger contact surface on the tooth flanks. The resulting axial forces that push the gears apart laterally are absorbed by a corresponding storage. Here, the two shaft axes of the drive wheel and the driven wheel are arranged parallel to each other. The diameters of the two wheels determine the gear ratio for driving the circular blade shaft. A preferred embodiment of the circular blade drive according to the invention has a speed-up ratio, ie the driven wheel performs more revolutions than the drive wheel, so that the transmission ratio is greater than 1.0.

Die erste Motoreinrichtung weist einen ersten Antriebsmotor auf, dessen Antriebsachse über einen ersten Zahnriemen mit dem Antriebsrad gekoppelt ist. Gleichzeitig ist das getriebene Rad mit der Kreismesserwelle gekoppelt, um das Drehmoment des ersten Antriebsmotors auf das Kreismesser zu übertragen. Dabei ist an einem Ende der Kreismesserwelle das Kreismesser gehalten und am gegenüberliegenden Ende der Kreismesserwelle ist das getriebene Rad fest angeordnet.The first motor device has a first drive motor whose drive axle is coupled to the drive wheel via a first toothed belt. At the same time, the driven wheel is coupled to the circular blade shaft to transmit the torque of the first drive motor to the circular blade. In this case, the circular blade is held at one end of the circular blade shaft and at the opposite end of the circular blade shaft, the driven wheel is fixed.

Die zweite Motoreinrichtung weist einen zweiten Antriebsmotor auf, dessen Antriebsachse über einen zweiten Zahnriemen mit der Schwingenwelle gekoppelt ist, um das Drehmoment des zweiten Antriebsmotors auf die Schwinge zu übertragen. Dabei ist an einem Ende der Schwingenwelle die Schwinge fest gehalten und am gegenüberliegenden Ende der Schwingenwelle greift der zweite Zahnriemen an.The second motor device has a second drive motor whose drive shaft is coupled via a second toothed belt to the rocker shaft in order to transmit the torque of the second drive motor to the rocker. In this case, the rocker is held firmly at one end of the rocker shaft and at the opposite end of the rocker shaft, the second toothed belt engages.

Vorteilhaft ist das Kreismesser mittels einer Haltevorrichtung auswechselbar auf der Kreismesserwelle gehalten. Hierdurch ist das Kreismesser bei Verschleiß der Zahnung oder je nach Anforderung gegen ein neues bzw. anderes Kreismesser schnell und einfach austauschbar.Advantageously, the circular blade is held interchangeable by means of a holding device on the circular blade shaft. As a result, the circular blade is quickly and easily interchangeable with wear of the toothing or depending on the requirements of a new or different circular blade.

Die Kreismesserwelle und die Schwingenwelle, die gleichzeitig die beiden Wellenachsen des Getriebes für das Antriebsrad und das getriebene Rad bilden, sind in Wälzlagern geführt, um die Axialschubkraft der schrägverzahnten Zylinderräder aufzunehmen. Zusätzlich ist das Antriebsrad in Wälzlagern drehbar um die Schwingenwelle geführt.The circular knife shaft and the rocker shaft, which simultaneously form the two shaft axes of the transmission for the drive wheel and the driven wheel, are guided in rolling bearings to the axial thrust force of the helical cylindrical wheels take. In addition, the drive wheel is guided in bearings rotatably around the swingarm shaft.

Besonders vorteilhaft ist der erfindungsgemäße Kreismesserantrieb auf einem Basisträger angeordnet, so dass er einfach in das Maschinengestell einer Brotschneidemaschine eingesetzt werden kann und in gleicher Weise für Wartungszwecke einfach ausgebaut werden kann.Particularly advantageously, the circular blade drive according to the invention is arranged on a base support, so that it can be easily inserted into the machine frame of a bread slicer and can be easily removed in the same way for maintenance purposes.

Gegenstand der Erfindung ist auch die Verwendung des oben beschriebenen Kreismesserantriebs in Brotschneidemaschinen zum Schneiden von verschiedenen Strangbrotsorten im Durchlaufverfahren. Dabei wird das Strangbrot auf einer Seite des Transportkanals aufgelegt, wird kontinuierlich taktweise durch den Transportkanal befördert und kreuzt dabei den Schnittbereich des Kreismessers, und kommt auf der gegenüberliegenden Seite des Transportkanals geschnitten heraus. Dabei kommt es zu keinen Verzögerungen bzw. Standzeiten während des Zerschneidens des Brotes. Zum Beispiel beträgt die Schnittgeschwindigkeit bis zu 600 Scheiben pro Minute und ist je nach Anforderung stufenlos regelbar.The invention also relates to the use of the above-described circular knife drive in bread slicing machines for slicing different types of strand bread in a continuous process. In this case, the strand bread is placed on one side of the transport channel, is continuously transported intermittently through the transport channel and thereby crosses the cutting region of the circular blade, and comes cut out on the opposite side of the transport channel. There are no delays or downtime during the slicing of the bread. For example, the cutting speed is up to 600 slices per minute and is infinitely variable depending on the requirements.

Die Erfindung ist nachfolgend anhand von bevorzugten Ausführungsbeispielen unter Bezugnahme auf die Abbildungen beispielhaft erläutert. Dabei zeigt schematisch:

  • Fig. 1 eine bevorzugte Ausführungsform des erfindungsgemäßen Kreismesserantriebs in Isometrieansicht,
  • Fig. 2 den Kreismesserantrieb in Schnittansicht,
  • Fig. 3 das Kreismesserantrieb in Vorderansicht.
The invention is explained below by way of example with reference to preferred embodiments with reference to the figures. It shows schematically:
  • Fig. 1 a preferred embodiment of the circular blade drive according to the invention in isometric view,
  • Fig. 2 the circular knife drive in sectional view,
  • Fig. 3 the circular blade drive in front view.

Fig. 1 zeigt schematisch eine bevorzugte Ausführungsform des erfindungsgemäßen Kreismesserantriebs 1 in Isometrieansicht. Fig. 1 schematically shows a preferred embodiment of the circular knife drive 1 according to the invention in isometric view.

Dabei ist ein Getriebe 7 vorgesehen, bei dem eine erste Motoreinrichtung über ein Antriebsrad 8 und ein getriebenes Rad 9 eine obenseitig angeordnete Kreismesserwelle 12 mit dem daran gehaltenen Kreismesser 2 rotierend antreibt. Die erste Motoreinrichtung weist einen ersten Antriebsmotor 3 auf, dessen Antriebswelle über einen ersten Zahnriemen 5 mit dem Antriebsrad 8 gekoppelt ist. Zusätzlich ist das getriebene Rad 9 mit der Kreismesserwelle 12 gekoppelt, um das Drehmoment des ersten Antriebsmotors 3 auf das Kreismesser 2 zu übertragen. Das Antriebsrad 8 und das getriebene Rad 9 sind als schrägverzahnte Zylinderräder miteinander zur formschlüssigen Kraftübertragung gepaart.In this case, a transmission 7 is provided in which a first motor means via a drive wheel 8 and a driven wheel 9 rotatably drives a circular blade shaft 12 arranged on the top with the circular blade 2 held thereon. The first motor device has a first drive motor 3, whose drive shaft via a first toothed belt 5 is coupled to the drive wheel 8. In addition, the driven gear 9 is coupled to the circular blade shaft 12 to transmit the torque of the first drive motor 3 to the circular blade 2. The drive wheel 8 and the driven wheel 9 are paired as helical cylindrical wheels with each other for positive power transmission.

Weiterhin umfasst das Getriebe 7 eine zweite Motoreinrichtung, die über eine mittig angeordnete Schwingenwelle 11 die Schwinge 10 umlaufend U antreibt. Dabei weist die zweite Motoreinrichtung einen zweiten Antriebsmotor 4 auf, dessen Antriebswelle über einen zweiten Zahnriemen 6 mit der Schwingenachse 11 gekoppelt ist, um das Drehmoment des zweiten Antriebsmotors 4 auf die Schwinge 10 zu übertragen.Furthermore, the transmission 7 comprises a second motor device which drives the rocker 10 revolving around a centrally arranged rocker shaft 11. In this case, the second motor device to a second drive motor 4, the drive shaft is coupled via a second toothed belt 6 with the swing arm 11 to transmit the torque of the second drive motor 4 to the rocker 10.

Das Kreismesser 2 ist rechtsseitig mittels einer Haltevorrichtung 13 auswechselbar auf der Kreismesserwelle 12 gehalten.
Der Kreismesserantrieb 1 ist auf einem Basisträger 14 angeordnet.The circular blade 2 is held on the right side by means of a holding device 13 interchangeable on the circular blade shaft 12.
The circular knife drive 1 is arranged on a base support 14.

Fig. 2 zeigt den Kreismesserantrieb 1 in Schnittansicht.
Hierbei ist die parallele Lage der ersten Wellenachse W1 des Antriebsrades 8 zur zweiten Wellenachse W2 des getriebenen Rades 9 des in Fig. 1 detailliert beschriebenen Getriebes 7 für den Antrieb der Kreismesserwelle 12 dargestellt. Dabei ist das Antriebsrad 8 drehbar auf der Schwingenwelle 11 angeordnet und das getriebene Rad 9 ist fest an der Kreismesserwelle 12 angeordnet. Im Kontaktbereich des Antriebsrades 8 mit dem getriebenen Rad 9 berühren sich zwei Zähne gleichzeitig. Fig. 2 shows the circular blade drive 1 in a sectional view.
Here, the parallel position of the first shaft axis W1 of the drive wheel 8 to the second shaft axis W2 of the driven wheel 9 of the in Fig. 1 described in detail transmission 7 for driving the circular blade shaft 12. In this case, the drive wheel 8 is rotatably arranged on the rocker shaft 11 and the driven wheel 9 is fixedly arranged on the circular blade shaft 12. In the contact region of the drive wheel 8 with the driven wheel 9, two teeth touch simultaneously.

Am rechtsseitigen Ende der Kreismesserwelle 12 ist das Kreismesser 2 mittels der Haltevorrichtung 13 auswechselbar gehalten und am linksseitigen Ende der Kreismesserwelle 12 ist das getriebene Rad 9 mittels Schraubverbindungen fest gehalten. Am linksseitigen Ende des Antriebsrades 8 greift der erste Zahnriemen 5 an.At the right-hand end of the circular blade shaft 12, the circular blade 2 is held interchangeable by means of the holding device 13 and the left-hand end of the circular blade shaft 12, the driven wheel 9 is held firmly by means of screw. At the left end of the drive wheel 8, the first toothed belt 5 engages.

Am rechtsseitigen Ende der Schwingenwelle 11 ist die Schwinge 10 mittels Schraubverbindungen fest gehalten und am linksseitigen Ende der Schwingenwelle 11 greift der zweite Zahnriemen 6 an.At the right end of the rocker shaft 11, the rocker 10 is held firmly by means of screw and the left side end of the rocker shaft 11 engages the second toothed belt 6 at.

Die Schwingenwelle 11 und die Kreismesserwelle 13 sowie das Antriebsrad 8 sind in mehreren Wälzlagern 15 geführt.The rocker shaft 11 and the circular blade shaft 13 and the drive wheel 8 are guided in a plurality of rolling bearings 15.

Fig. 3 zeigt den Kreismesserantrieb 1 in Vorderansicht, wobei im Wesentlichen das Kreismesser 2 mit der Schwinge 10 dargestellt sind.
Die Schwingenwelle 11 ist im Gewichtszentrum der Schwinge 10 fest angeordnet, so dass das Kreismesser 2 in einer umlaufenden Bewegung U um die Schwingenwelle 11 bewegt wird. Die Kreismesserwelle 12 ist im Abstand zum Gewichtszentrum der Schwinge 10 drehbar auf der Schwinge 10 angeordnet, wobei das Kreismesser 2 in einer Rotation R um die Kreismesserwelle 12 angetrieben wird. Fig. 3 shows the circular blade drive 1 in front view, wherein substantially the circular blade 2 are shown with the rocker 10.
The rocker shaft 11 is fixedly arranged in the weight center of the rocker 10, so that the circular blade 2 is moved in a circumferential movement U about the rocker shaft 11. The circular blade shaft 12 is rotatably disposed on the rocker 10 at a distance from the center of gravity of the rocker 10, wherein the circular blade 2 is driven in a rotation R about the circular blade shaft 12.

Während der umlaufenden Bewegung U wird durch das rotierende R Kreismesser 2 die erste Kreisbahn K1 und durch die Schwinge 10 die zweite Kreisbahn K2 um die Schwingenwelle 11 beschrieben. In dem Bereich zwischen der ersten Kreisbahn K1 und der zweiten Kreisbahn K2 ist der Transportkanal 17 mit dem darin beförderten Brot 16 angeordnet. In der Folge tritt das rotierende R Kreismesser 2 in der Schneidposition in den Transportkanal 17 ein und zerschneidet das kontinuierlich taktweise durch den Transportkanal 17 beförderte Brot 16. Danach tritt das Kreismesser 2 wieder aus dem Transportkanal 17 aus, und durchläuft den außerhalb des Transportkanals 17 vorhanden Raum.During the revolving movement U, the first circular path K1 is described by the rotating R circular blade 2, and the second circular path K2 about the oscillating shaft 11 by the rocker 10. In the area between the first circular path K1 and the second circular path K2, the transport channel 17 with the bread 16 conveyed therein is arranged. As a result, the rotating R circular blade 2 enters the transport channel 17 in the cutting position and cuts the bread 16 continuously conveyed intermittently through the transport channel 17. Thereafter, the circular blade 2 again emerges from the transport channel 17 and passes through the outside of the transport channel 17 Room.

Bezugszeichenreference numeral

11
KreismesserantriebCircular blade drive
22
Kreismessercircular blade
33
Erste AntriebsmotorFirst drive motor
44
Zweite AntriebsmotorSecond drive motor
55
Erster ZahnriemenFirst timing belt
66
Zweiter ZahnriemenSecond toothed belt
77
Getriebetransmission
88th
Antriebsraddrive wheel
99
Getriebene RadDriven wheel
1010
Schwingewing
1111
Schwingenwelleswing shaft
1212
KreismesserwelleCircular blade shaft
1313
Haltevorrichtungholder
1414
Basisträgerbase support
1515
Wälzlagerroller bearing
1616
Brotloaf
1717
Transportkanaltransport channel
K1K1
Erste KreisbahnFirst circular path
K2K2
Zweite KreisbahnSecond circular path
RR
Rotationrotation
UU
Umlaufende BewegungCirculating movement
W1W1
Erste WellenachseFirst shaft axis
W2W2
Zweite WellenachseSecond shaft axis

Claims (11)

  1. Circular blade drive (1), which drives a rotating (R) circular blade (2) mounted rotatably on an oscillating crank (10) and driven by means of a first motor device and by means of a second motor device drives the oscillating crank (10) for moving the circular blade (2) into a cutting position, wherein a gearing (7) is provided wherein the first motor device drives a circular blade shaft (12) with the cutting blade (2) held against it, and the second motor device rotates (K) around the oscillating crank (10), driving said oscillating crank (10) by means of a rotating shaft (11) and wherein remote from a centre of gravity of the oscillating crank (10) the circular blade shaft (12) is arranged rotatably on the oscillating crank (10), with consequently the rotational speed of the circular blade shaft (12) being a function of the difference in speed between the two motor devices, characterised in that a drive wheel (8) and a driven wheel (9) are provided in the gearing (7) to drive the circular blade shaft (12) and both the rotating shaft (11) and the drive wheel (8) of the gearing (7) are aligned congruently with the first shaft axis (W1) of the gearing (7), wherein the drive wheel (8) and the driven wheel (9) are helical cylindrical gears in design and are paired with one another for positive power transfer, and wherein the rotating shaft (11) is rigidly arranged at the centre of gravity of the oscillating crank (10).
  2. Circular blade drive (1) according to claim 1, characterised in that the positions of the two shaft axes (W1, W2) of the drive wheel (8) and driven wheel (9) are parallel to one another.
  3. Circular blade drive (1) according to claim 1, characterised in that the first motor device has a first drive motor (3) whose drive shaft is coupled to the drive wheel (8) via a first toothed belt (5).
  4. Circular blade drive (1) according to claim 1, characterised in that the driven wheel (9) is coupled to the circular blade shaft (12) in order to transfer the torque from the first drive motor (3) to the circular blade (2).
  5. Circular blade drive (1) according to claim 1, characterised in that the circular blade (2) is held at one end of the circular blade shaft (12) and the driven wheel (9) is rigidly arranged at the opposing end of the circular blade shaft (12).
  6. Circular blade drive (1) according to claim 1, characterised in that the second motor device has a second drive motor (4) whose drive shaft is coupled to the rotating shaft (11) via a second toothed belt (6) in order to transfer the torque from the second drive motor (4) to the oscillating crank (10).
  7. Circular blade drive (1) according to claim 1, characterised in that the oscillating crank (10) is rigidly held at one end of the rotating shaft (11) and the second toothed belt (6) engages with the opposing end of the rotating shaft (11).
  8. Circular blade drive (1) according to claim 1, characterised in that the circular blade (2) is held interchangeably on the circular blade shaft (12) by means of a retaining device (13).
  9. Circular blade drive (1) according to claim 1, characterised in that the circular blade shaft (11) and the rotating shaft (10) as well as the drive wheel (8) are guided in roll bearings (15).
  10. Circular blade drive (1) according to claim 1, characterised in that the circular blade drive (1) is arranged on a base support (14).
  11. Use of the circular blade drive (1), according to any one of the preceding claims, as a drive for a circular blade (2) in bread cutting machines for cutting different types of strip bread (16) in a continuous operation.
EP14197326.3A 2014-01-16 2014-12-11 Circular blade drive, in particular for bread cutting machines Active EP2896490B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202014100185.9U DE202014100185U1 (en) 2014-01-16 2014-01-16 Circular knife drive, in particular for bread slicing machines

Publications (2)

Publication Number Publication Date
EP2896490A1 EP2896490A1 (en) 2015-07-22
EP2896490B1 true EP2896490B1 (en) 2017-06-21

Family

ID=50235819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197326.3A Active EP2896490B1 (en) 2014-01-16 2014-12-11 Circular blade drive, in particular for bread cutting machines

Country Status (5)

Country Link
EP (1) EP2896490B1 (en)
DE (1) DE202014100185U1 (en)
DK (1) DK2896490T3 (en)
LT (1) LT2896490T (en)
RU (1) RU2677826C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128946B (en) * 2014-07-17 2016-01-13 杭州爱科科技有限公司 A kind of initiatively flywheel knife
DE102018005934A1 (en) * 2018-07-30 2020-01-30 Siller Holding GmbH Motor drive for a cutting machine
CN114378877A (en) * 2022-02-28 2022-04-22 安徽汉邦智汇科技有限公司 Integrated circular knife rotary driving device

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Publication number Priority date Publication date Assignee Title
SU1138264A1 (en) * 1983-01-13 1985-02-07 Институт черной металлургии Circular double-pair shears
SU1177083A1 (en) * 1984-04-10 1985-09-07 Азовское специальное конструкторское бюро кузнечно-прессового оборудования и автоматических линий Disc shears
DE3706485A1 (en) * 1987-02-27 1988-10-13 Fritz Schickart Slicing and cutting machine for bread, cheese and the like
US5461956A (en) 1993-01-27 1995-10-31 Oliver Products Company Variable thickness bread slicer
US5724874A (en) * 1994-10-11 1998-03-10 Formax, Inc. Method of manufacturing food loaf slice groups
IT1280839B1 (en) * 1995-04-04 1998-02-11 Hitech Systems Srl IMPROVED INDUSTRIAL SLICING MACHINE, ESPECIALLY FOR FOOD PRODUCTS.
DE10208492A1 (en) * 2002-02-27 2003-09-04 Bsh Bosch Siemens Hausgeraete Slicer with a drive unit
DE202005006834U1 (en) 2005-04-29 2006-08-31 Hartmann, Rainer, Dr. Ing. Transport channel used in a bread cutting machine for cutting bread has a non-isosceles angle in its cross-section in the cutting region and in the cutting direction of a circular knife
RU2368468C2 (en) * 2007-11-19 2009-09-27 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Rotary drive mechanism of circle shears knives
DE102010002279A1 (en) * 2010-02-24 2011-08-25 Reifenhäuser, Uwe, 57632 Machine for cutting a strand-shaped food
DE102011010935A1 (en) 2011-02-11 2012-08-16 Uwe Schmidt Circular blade of bread slicer, has toothed belt that is arranged in front of circular knife so as to drive circular blade in transport direction of bread

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Title
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Also Published As

Publication number Publication date
LT2896490T (en) 2017-09-11
DE202014100185U1 (en) 2014-02-18
RU2015101063A3 (en) 2018-07-27
EP2896490A1 (en) 2015-07-22
RU2677826C2 (en) 2019-01-21
RU2015101063A (en) 2016-08-10
DK2896490T3 (en) 2017-10-02

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