EP3603908B1 - Motor drive for a cutting machine - Google Patents
Motor drive for a cutting machine Download PDFInfo
- Publication number
- EP3603908B1 EP3603908B1 EP19188170.5A EP19188170A EP3603908B1 EP 3603908 B1 EP3603908 B1 EP 3603908B1 EP 19188170 A EP19188170 A EP 19188170A EP 3603908 B1 EP3603908 B1 EP 3603908B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- drive motor
- motor
- drive
- knife
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007787 solid Substances 0.000 claims description 21
- 235000008429 bread Nutrition 0.000 description 8
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- 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
- B26D1/165—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 for thin material, e.g. for sheets, strips or the like
Definitions
- the invention relates to a motor drive by means of which the circular knife of a cutting machine can be driven.
- motor drives are regularly used, which are constructed in a manner comparable to a planetary gear.
- the circular knife is arranged at a certain distance from a central axis of rotation and performs a circular movement around this axis of rotation.
- the circular knife rotates around its own axis at the same time.
- the DE 23 51 980 A1 discloses a motor drive for a cutting machine which has a first and a second drive motor.
- the first drive motor drives a hollow shaft.
- An extenter arm can be driven through this hollow shaft.
- the second drive motor drives a circular knife via a solid shaft.
- the hollow shaft is driven indirectly by the motor shaft of the first drive motor.
- a motor drive for a cutting machine in which a first and a second drive motor are present.
- the first drive motor drives an eccentric arm; while the second drive motor drives the circular knife.
- Both the first and the second drive motor each drive a solid shaft.
- the invention is based on the object of specifying an improved motorized drive for a cutting machine which enables the ratio of the rotational speed of the circular knife to the cutting speed to be set as variable as possible.
- the motor drive according to the invention has a first drive motor by which an eccentric arm is driven. About that In addition, there is a second drive motor by means of which the circular knife mounted on the eccentric arm is driven.
- the motorized drive according to the invention specifically has two separate drive motors.
- the circular knife and the eccentric arm are accordingly driven by two separate drive motors, so that the speed of the eccentric arm, which determines the speed of the cuts, is independent of the rotational speed of the circular knife.
- This has the advantage that, with a slowly rotating eccentric arm, high blade speeds can still be achieved. In this way, for example, particularly soft bread - in particular toast bread - or even warm bread can be gently cut without tearing the cut slices.
- the motorized drive can be started up more quickly and with less energy. This is particularly advantageous in the case of only short operating times - for example when halving whole loaves or when cutting only a few slices.
- the first drive motor has a hollow shaft through which the eccentric arm can be driven.
- the second drive motor has a solid shaft through which the circular knife can be driven and which runs through the hollow shaft of the first drive motor. This allows a particularly compact design.
- the second drive motor therefore has a motor shaft through which the solid shaft of the second drive motor can be driven directly or indirectly.
- the knife shaft can preferably be connected to the solid shaft of the second drive motor via a toothed belt.
- the circular knife can preferably be attached to a knife shaft.
- This knife shaft can be rotatably mounted on the eccentric shaft.
- the rotatably mounted knife shaft can be driven directly or indirectly by the solid shaft of the second drive motor.
- the rotatably mounted knife shaft can be connected to the solid shaft of the second drive motor, preferably via a toothed belt.
- the motor drive 10 according to the invention is shown in FIG Fig. 1 shown.
- the motor drive 10 has a first drive motor 12 and a second drive motor 14.
- the second drive motor 14 is arranged below the first drive motor 12.
- the first drive motor 12 has a hollow shaft 20 which is driven directly by the first drive motor 12.
- An eccentric arm 22 is attached to the hollow shaft 20.
- the knife shaft 30 of a circular knife 32 is rotatably mounted on this eccentric arm 22.
- the knife shaft 30 is mounted on the eccentric arm 22 in the present example by means of two ball bearings 34.
- the first drive motor 12 thus moves the circular knife 32 through the bread to be sliced.
- the actual rotation of the circular knife 32 around the knife shaft 30, however, is not caused by the first drive motor 12, but rather by the second drive motor 14.
- the knife shaft 30 in the present example is connected to a solid shaft 42 via a toothed belt 40.
- This solid shaft 42 can in principle be connected directly or indirectly to the second drive motor 14.
- the knife shaft 30 is also driven in rotation when the solid shaft 42 rotates.
- the toothed belt 40 runs within the eccentric arm 22.
- the solid shaft 42 of the second drive motor 14 is rotatably supported within the hollow shaft 20 of the first drive motor 12.
- the solid shaft 42 is supported within the hollow shaft 20 in the present example by means of two ball bearings 44.
- the rear end 46 of the solid shaft 42 projects a little beyond the first drive motor 12.
- the solid shaft 42 is connected to a motor shaft 50 of the second drive motor 14 via a further toothed belt 48.
- the motor shaft 50 rotates, this rotation is first transmitted to the solid shaft 42 via the toothed belt 48.
- the rotation is then transmitted to the knife shaft 30 via the toothed belt 40, so that the circular knife 32 rotates around the knife shaft 30.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food-Manufacturing Devices (AREA)
- Control Of Cutting Processes (AREA)
Description
Die Erfindung betrifft einen motorischen Antrieb, durch den das Kreismesser einer Schneidmaschine angetrieben werden kann.The invention relates to a motor drive by means of which the circular knife of a cutting machine can be driven.
In gewerblichen Brotschneidemaschinen mit einem Kreismesser werden regelmäßig motorische Antriebe verwendet, die vergleichbar einem Planetengetriebe aufgebaut sind. Das Kreismesser ist mit einem gewissen Abstand zu einer zentralen Drehachse angeordnet und führt eine umlaufende Kreisbewegung um diese Drehachse aus. Dabei rotiert das Kreismesser gleichzeitig um seine eigene Achse.In commercial bread slicers with a circular knife, motor drives are regularly used, which are constructed in a manner comparable to a planetary gear. The circular knife is arranged at a certain distance from a central axis of rotation and performs a circular movement around this axis of rotation. The circular knife rotates around its own axis at the same time.
Das Verhältnis der Drehzahl des Kreismessers bei der Rotation um die eigene Achse zur Anzahl der durchgeführten Schnitte - entspricht der Anzahl der umlaufenden Kreisbewegungen um die zentrale Drehachse
- ist regelmäßig nicht variabel. Sofern die durchgeführten Schnitte daher verhältnismäßig langsam ausgeführt werden, sinkt daher in der Regel auch die Rotationsgeschwindigkeit des Kreismessers, während bei hohen Rotationsgeschwindigkeiten des Kreismessers auch die Schnittgeschwindigkeit ansteigt. Dadurch können sehr weiche Brote, wie beispielsweise Toastbrote, oftmals mit einer solchen Schneidmaschine nicht sauber geschnitten werden. Auch das Schneiden von backfrischen und damit noch warmen Broten ist in der Regel schwierig, da die einzelnen Scheiben beim Schneiden reißen.
- is regularly not variable. If the cuts carried out are therefore carried out relatively slowly, the rotational speed of the circular knife therefore also generally decreases, while the cutting speed also increases at high rotational speeds of the circular knife. As a result, very soft bread, such as toast bread, can often not be cut cleanly with such a cutting machine. Slicing freshly baked bread that is still warm is usually difficult because the individual slices tear when sliced.
Die
Aus der
Aus der
Ausgehend von diesem vorbekannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen verbesserten motorischen Antrieb für eine Schneidmaschine anzugeben, der eine möglichst variable Einstellung des Verhältnisses der Drehzahl des Kreismessers zur Schnittgeschwindigkeit ermöglicht.Proceeding from this known prior art, the invention is based on the object of specifying an improved motorized drive for a cutting machine which enables the ratio of the rotational speed of the circular knife to the cutting speed to be set as variable as possible.
Der erfindungsgemäße motorische Antrieb ist durch die Merkmale des Hauptanspruchs 1 gegeben. Sinnvolle Weiterbildungen der Erfindung sind Gegenstand von sich an diesen Anspruch anschließenden weiteren Ansprüchen.The motor drive according to the invention is given by the features of main claim 1. Useful further developments of the invention are the subject of further claims which follow this claim.
Der erfindungsgemäße motorische Antrieb besitzt einen ersten Antriebsmotor, durch den ein Exzenterarm angetrieben wird. Darüber hinaus ist ein zweiter Antriebsmotor vorhanden, durch den das an dem Exzenterarm gelagerte Kreismesser angetrieben wird.The motor drive according to the invention has a first drive motor by which an eccentric arm is driven. About that In addition, there is a second drive motor by means of which the circular knife mounted on the eccentric arm is driven.
Während aus Kostengründen regelmäßig die Verwendung von möglichst wenigen separaten Antriebsmotoren favorisiert wird, besitzt der motorische Antrieb nach der Erfindung gezielt zwei separate Antriebsmotoren. Das Kreismesser und der Exzenterarm werden demnach durch zwei separate Antriebsmotoren angetrieben, so dass die Drehzahl des Exzenterarms, die die Geschwindigkeit der Schnitte bestimmt, unabhängig von der Drehzahl des Kreismessers ist. Dies hat den Vorteil, dass bei einem langsam drehenden Exzenterarm dennoch hohe Messerdrehzahlen realisiert werden können. Dadurch können beispielsweise auch besonders weiche Brote - insbesondere Toastbrote - oder auch noch warme Brote schonend geschnitten werden, ohne dass die geschnittenen Scheiben einreißen würden. Darüber hinaus kann das Anfahren des motorischen Antriebs rascher und energiesparender erfolgen. Dies ist insbesondere bei nur kurzen Betriebsdauern - beispielsweise beim Halbieren von ganzen Broten oder beim Schneiden nur weniger Scheiben - vorteilhaft.While the use of as few separate drive motors as possible is generally favored for reasons of cost, the motorized drive according to the invention specifically has two separate drive motors. The circular knife and the eccentric arm are accordingly driven by two separate drive motors, so that the speed of the eccentric arm, which determines the speed of the cuts, is independent of the rotational speed of the circular knife. This has the advantage that, with a slowly rotating eccentric arm, high blade speeds can still be achieved. In this way, for example, particularly soft bread - in particular toast bread - or even warm bread can be gently cut without tearing the cut slices. In addition, the motorized drive can be started up more quickly and with less energy. This is particularly advantageous in the case of only short operating times - for example when halving whole loaves or when cutting only a few slices.
Erfindungsgemäß besitzt der erste Antriebsmotor eine Hohlwelle, durch die der Exzenterarm angetrieben werden kann. Der zweite Antriebsmotor weist dagegen eine Vollwelle auf, durch die das Kreismesser angetrieben werden kann und die durch die Hohlwelle des ersten Antriebsmotors verläuft. Dies erlaubt eine besonders kompakte Bauweise.According to the invention, the first drive motor has a hollow shaft through which the eccentric arm can be driven. The second drive motor, on the other hand, has a solid shaft through which the circular knife can be driven and which runs through the hollow shaft of the first drive motor. This allows a particularly compact design.
Es wäre möglich, den ersten Antriebsmotor und den zweiten Antriebsmotor hintereinander anzuordnen. Eine solche Bauweise wäre zwar relativ schmal, aber auch verhältnismäßig lang. Daher würde sich eine solche Anordnung nicht für alle Arten von Schneidmaschinen eignen.It would be possible to arrange the first drive motor and the second drive motor one behind the other. Such a construction would be relatively narrow, but also relatively long. Therefore, such an arrangement would not be suitable for all types of cutting machines.
Erfindungsgemäß besitzt der zweite Antriebsmotor daher eine Motorwelle, durch die die Vollwelle des zweiten Antriebsmotors direkt oder indirekt angetrieben werden kann. Dazu kann die Messerwelle vorzugsweise über einen Zahnriemen mit der Vollwelle des zweiten Antriebsmotors verbunden sein. Eine derartige Anordnung erlaubt es, die beiden Antriebsmotoren seitlich nebeneinander oder auch untereinander anzuordnen. Dies ermöglicht eine besonders kompakte Bauweise. Trotz der Verwendung von zwei Antriebsmotoren ist diese Bauweise regelmäßig platzsparender als die im Stand der Technik verwendeten Planetengetriebe, da die beiden Antriebsmotoren deutlich kleiner und damit kompakter ausfallen können als der für die Planetengetriebe benötigte einzige Antriebsmotor.According to the invention, the second drive motor therefore has a motor shaft through which the solid shaft of the second drive motor can be driven directly or indirectly. For this purpose, the knife shaft can preferably be connected to the solid shaft of the second drive motor via a toothed belt. Such an arrangement allows the two drive motors to be arranged laterally next to one another or also one below the other. This enables a particularly compact design. Despite the use of two drive motors, this design is usually more space-saving than the planetary gears used in the prior art, since the two drive motors can be significantly smaller and thus more compact than the single drive motor required for the planetary gears.
Vorzugsweise kann das Kreismesser an einer Messerwelle befestigt sein. Diese Messerwelle kann rotierbar an der Exzenterwelle gelagert sein. Der Antrieb der rotierbar gelagerten Messerwelle kann in diesem Fall direkt oder indirekt durch die Vollwelle des zweiten Antriebsmotors erfolgen. Dazu kann die rotierbar gelagerte Messerwelle vorzugsweise über einen Zahnriemen mit der Vollwelle des zweiten Antriebsmotors verbunden sein.The circular knife can preferably be attached to a knife shaft. This knife shaft can be rotatably mounted on the eccentric shaft. In this case, the rotatably mounted knife shaft can be driven directly or indirectly by the solid shaft of the second drive motor. For this purpose, the rotatably mounted knife shaft can be connected to the solid shaft of the second drive motor, preferably via a toothed belt.
Weitere Vorteile und Merkmale der Erfindung sind den in den Ansprüchen ferner angegebenen Merkmalen sowie dem nachstehenden Ausführungsbeispiel zu entnehmen.Further advantages and features of the invention can be found in the features further specified in the claims and in the exemplary embodiment below.
Die Erfindung wird im Folgenden anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben und erläutert. Es zeigt:
- Fig. 1
- einen Schnitt durch einen motorischen Antrieb nach der Erfindung.
- Fig. 1
- a section through a motor drive according to the invention.
Der erfindungsgemäße motorische Antrieb 10 ist in
Der erste Antriebsmotor 12 besitzt eine Hohlwelle 20, die direkt durch den ersten Antriebsmotor 12 angetrieben wird. An der Hohlwelle 20 ist ein Exzenterarm 22 angebracht. An diesem Exzenterarm 22 ist die Messerwelle 30 eines Kreismessers 32 rotierbar gelagert. Die Lagerung der Messerwelle 30 an dem Exzenterarm 22 erfolgt im vorliegenden Beispielsfall über zwei Kugellager 34. Durch den ersten Antriebsmotor 12 erfolgt somit die Bewegung des Kreismessers 32 durch das zu schneidende Brot. Die eigentliche Rotation des Kreismessers 32 um die Messerwelle 30 wird jedoch nicht durch den ersten Antriebsmotor 12, sondern vielmehr durch den zweiten Antriebsmotor 14 verursacht.The
Dazu ist die Messerwelle 30 im vorliegenden Beispielsfall über einen Zahnriemen 40 mit einer Vollwelle 42 verbunden. Diese Vollwelle 42 kann grundsätzlich direkt oder indirekt mit dem zweiten Antriebsmotor 14 verbunden sein. Dadurch wird die Messerwelle 30 bei einer Rotation der Vollwelle 42 ebenfalls rotativ angetrieben. Der Zahnriemen 40 verläuft dabei im vorliegenden Beispielsfall innerhalb des Exzenterarms 22. Die Vollwelle 42 des zweiten Antriebsmotors 14 ist innerhalb der Hohlwelle 20 des ersten Antriebsmotors 12 rotierbar gelagert. Die Lagerung der Vollwelle 42 innerhalb der Hohlwelle 20 erfolgt dabei im vorliegenden Beispielsfall über zwei Kugellager 44.For this purpose, the
Die Vollwelle 42 ragt mit ihrem hinteren Ende 46 ein Stück weit über den ersten Antriebsmotor 12 über. An diesem hinteren Ende 46 ist die Vollwelle 42 über einen weiteren Zahnriemen 48 mit einer Motorwelle 50 des zweiten Antriebsmotors 14 verbunden. Bei einer Rotation der Motorwelle 50 wird diese Rotation über den Zahnriemen 48 zunächst auf die Vollwelle 42 übertragen. Über den Zahnriemen 40 erfolgt dann die Übertragung der Rotation auf die Messerwelle 30, so dass das Kreismesser 32 um die Messerwelle 30 rotiert.The
Claims (5)
- Motor drive (10) for a slicing machine,- having a first drive motor (12),- having an eccentric arm (22), which is able to be driven in rotation by a hollow shaft (20) of the first drive motor (12),- having a second drive motor (14), which has a motor shaft (50),- having a solid shaft (42), which is able to be driven by the motor shaft (50) of the second drive motor (14),- having a circular knife (32), which is mounted in a rotatable manner on the eccentric arm (22) and is able to be driven in rotation by the solid shaft (42) of the second drive motor (14),- wherein the solid shaft (42) of the second drive motor (14) extends through the hollow shaft (20) of the first drive motor (12),- characterized in that- the hollow shaft (20) is driven directly by the first drive motor (12).
- Motor drive according to Claim 1,- characterized in that- the circular knife (32) is fastened to a rotatably mounted knife shaft (30),- the rotatably mounted knife shaft (30) is able to be driven directly or indirectly by the solid shaft (42) of the second drive motor (14).
- Motor drive according to Claim 2,- characterized in that- the rotatably mounted knife shaft (30) is connected to the solid shaft (42) of the second drive motor (14) via a toothed belt (40).
- Motor drive according to Claim 1,- characterized in that- the motor shaft (50) is connected to the solid shaft (42) of the second drive motor (14) via a toothed belt (48).
- Motor drive according to Claim 1,- characterized in that- the second drive motor (14) is arranged beneath the first drive motor (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL19188170T PL3603908T3 (en) | 2018-07-30 | 2019-07-24 | Motor drive for a cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018005934.1A DE102018005934A1 (en) | 2018-07-30 | 2018-07-30 | Motor drive for a cutting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3603908A1 EP3603908A1 (en) | 2020-02-05 |
| EP3603908B1 true EP3603908B1 (en) | 2021-11-24 |
Family
ID=67438809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19188170.5A Active EP3603908B1 (en) | 2018-07-30 | 2019-07-24 | Motor drive for a cutting machine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3603908B1 (en) |
| DE (1) | DE102018005934A1 (en) |
| ES (1) | ES2905715T3 (en) |
| PL (1) | PL3603908T3 (en) |
| PT (1) | PT3603908T (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2351980A1 (en) * | 1973-10-17 | 1975-04-30 | Hans Neuner | Bacon slicer with rotating cutting arm - has two cutter discs with independent rotation |
| DE4429632A1 (en) * | 1994-08-20 | 1996-02-22 | Wabaema Gmbh | Device for cutting food |
| IT1280839B1 (en) * | 1995-04-04 | 1998-02-11 | Hitech Systems Srl | IMPROVED INDUSTRIAL SLICING MACHINE, ESPECIALLY FOR FOOD PRODUCTS. |
| DE10030691A1 (en) * | 2000-06-23 | 2002-01-03 | Dixie Union Gmbh & Co Kg | Cutting device, in particular for cutting food |
| DE102009011399A1 (en) * | 2009-03-03 | 2010-09-09 | Weber Maschinenbau Gmbh Breidenbach | cutter |
| DE202014100185U1 (en) * | 2014-01-16 | 2014-02-18 | GHD Georg Hartmann Maschinenbau GmbH | Circular knife drive, in particular for bread slicing machines |
| DE102014106341A1 (en) * | 2014-05-07 | 2015-11-12 | Textor Maschinenbau GmbH | Device for slicing food products |
-
2018
- 2018-07-30 DE DE102018005934.1A patent/DE102018005934A1/en not_active Withdrawn
-
2019
- 2019-07-24 PL PL19188170T patent/PL3603908T3/en unknown
- 2019-07-24 ES ES19188170T patent/ES2905715T3/en active Active
- 2019-07-24 PT PT191881705T patent/PT3603908T/en unknown
- 2019-07-24 EP EP19188170.5A patent/EP3603908B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| PT3603908T (en) | 2022-01-31 |
| PL3603908T3 (en) | 2022-03-21 |
| ES2905715T3 (en) | 2022-04-11 |
| DE102018005934A1 (en) | 2020-01-30 |
| EP3603908A1 (en) | 2020-02-05 |
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