EP3964295B1 - Mincer - Google Patents
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- Publication number
- EP3964295B1 EP3964295B1 EP21194254.5A EP21194254A EP3964295B1 EP 3964295 B1 EP3964295 B1 EP 3964295B1 EP 21194254 A EP21194254 A EP 21194254A EP 3964295 B1 EP3964295 B1 EP 3964295B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade shaft
- meat
- section
- mounting ring
- insertion end
- 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.)
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- 230000037431 insertion Effects 0.000 claims description 37
- 238000003780 insertion Methods 0.000 claims description 37
- 235000013372 meat Nutrition 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/30—Mincing machines with perforated discs and feeding worms
- B02C18/301—Mincing machines with perforated discs and feeding worms with horizontal axis
- B02C18/302—Mincing machines with perforated discs and feeding worms with horizontal axis with a knife-perforated disc unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/30—Mincing machines with perforated discs and feeding worms
- B02C18/305—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/30—Mincing machines with perforated discs and feeding worms
- B02C18/36—Knives or perforated discs
- B02C18/362—Knives
Definitions
- the invention relates to a meat grinder with cutting elements and with a conveyor screw which is rotatably mounted in a housing and which is connected to a knife pin.
- the various cutting elements include, for example, a perforated disk, knife and/or pre-cutter.
- the knife pin is connected to the conveyor screw at one end in a rotationally fixed manner and has an axially extending support section starting from the connection point with the conveyor screw on which the rotationally fixed knives are mounted. This ensures that the knives rotate at the same speed when the conveyor screw rotates.
- the perforated discs mounted next to the knives are supported in a stationary manner on the meat grinder housing during such a rotation and have a central hub through which the knife pin passes.
- Known knife pins have different cross sections, e.g. according to DE 26 49 305 C3 and US4,018390A a support section for the knife in square shape and according to EN 20 2020 102 505 U1 a support section in the form of a two-flat with a bevel on one edge for coding.
- DE 809 769 B It is known to use a knife tenon with a cross-section in the form of an asymmetrical polygon.
- connection between the screw conveyor and the knife pin are in the DE 100 26 825 C2 , namely a keyway connection or in DE 80 32 323 U1 , namely a press connection. These connections also allow easy assembly of the knife pin, but can no longer be removed after long periods of use.
- the object of the present invention is to provide a meat grinder with a drivable conveyor screw, in which the knife pin can be easily connected to the conveyor screw and easily detached again.
- the torque of the conveyor screw is transmitted to the knife pin and thus to the knives.
- This meat grinder has, in a known manner, a conveyor screw mounted in the meat grinder housing, which can be driven in particular by an electric motor.
- a knife pin is mounted on this conveyor screw in a rotationally fixed manner, which is detachably held on the conveyor screw at one end.
- the meat grinder also comprises at least one cutting set, whereby a cutting set can comprise various cutting elements.
- Such cutting elements are, for example, perforated disks and pre-cutters supported in a fixed position on the meat grinder housing.
- Such cutting elements also comprise knives mounted in a rotationally fixed manner on a support section of the knife pin, which interact with adjacent perforated disks to chop the meat. What is new is that the knife pin is inserted with one end, the insertion end, into a bearing bore of the conveyor screw. This is not a Press connection. To ensure torque transmission from the conveyor screw to the knife pin, the insertion end of the knife pin is adapted to the shape of the bearing bore.
- the shape of the knife pin is unchanged in the axial direction, i.e. in the conveying direction.
- the cross section of the supporting section of the knife pin and the connecting section with the conveyor screw at the insertion end of the knife pin can be any polygonal cross section, for example a so-called dihedral with two transmission surfaces for the torque arranged parallel to one another.
- the cross-sectional shape of the support section and the connecting section at the insertion end of the knife pin may be the same or different.
- the insertion end of the knife pin has a larger circumference than the support section on which the knives rest.
- the cross-sectional shape of the insertion end and the support section can be the same or different. With regard to the cross-section of the insertion end and the support section, it is important that rotational drive is ensured.
- the cross-sectional shape of the insertion end and the support section of the knife pin are the same.
- the insertion end has a larger circumference, projects beyond the support section in the radial direction, preferably starting from the central axis, the support section is evenly projected over by the insertion end on the circumference.
- a stop surface is formed on the circumference in the transition area between the insertion end and the support section. This stop surface serves as a stop for a fastening ring.
- This fastening ring has a correspondingly large opening so that it can be pushed from the rear end of the support section to the stop surface. This opening of the fastening ring is so large that a Rotation of the knife pin is not hindered. On the other hand, the opening is so small that the fastening ring does not fit over the insertion end of the knife pin.
- the support section of the knife pin and the insertion end of the knife pin have a different cross-sectional shape or an identical cross-sectional shape, but in a radially offset arrangement, so that the insertion end projects beyond the support section, if not circumferentially, then at least at several circumferential points or sections, and one or more stop surfaces for the separate fastening ring are formed on the circumference in the transition area between the insertion end and the support section.
- the fastening ring When assembling the knife pin, the fastening ring is inserted with its insertion end into the bearing bore of the conveyor screw. The fastening ring, which is pushed onto the knife pin and rests against the stop surface of the knife pin, is then connected to the conveyor screw.
- This connection is a detachable connection, whereby the fastening ring and the conveyor screw have connecting means that match each other, namely suitable positive and/or non-positive connections, e.g. a screw connection or a spring/groove connection, preferably a screw connection.
- the fastening ring has an external thread on its peripheral surface and the conveyor screw has a matching internal thread.
- a cylindrical bushing with a corresponding internal thread is provided at the output end in front of the bearing bore in the conveyor screw.
- the fastening ring is also pushed over the support section up to the stop surface and the insertion end of the knife pin is inserted into the bearing bore. Since the opening of the fastening ring is smaller than the diameter of the insertion end, the knife pin is held axially in position by the screw connection between the fastening ring and the conveyor screw.
- the assembly of the knife pin on The screw conveyor can be easily adjusted. The torque transmission between the screw conveyor and the knife pin is ensured by the coordinated cross sections of the spigot end and the bearing bore.
- such a knife pin is easier to remove from the conveyor screw than known knife pins.
- damage to the knife pin is avoided in particular, since the forces for loosening the screw connection act exclusively on the fastening ring.
- handling means are provided on the fastening ring, for example in the form of grooves or notches. These handling means offer intervention options for suitable tools when loosening the screw connection.
- the fastening ring has a circumferential rib on its peripheral surface, which interacts with an annular groove in the cylindrical bushing at the output end in front of the bearing bore in the conveyor screw.
- Other force- and/or form-fitting connections can also be used to connect the fastening ring, such as hooks.
- Bayonet locks such as those known from attaching a lens to a camera, can also be used, namely by providing lugs on the fastening ring and corresponding recesses in the cylindrical bushing.
- connection between the knife pin and the conveyor screw can be sealed using sealing rings to prevent the ingress of shredded material into the area of the screw connection and the bearing bore.
- the new meat grinder has, as is well known, a drivable conveyor screw and a rotationally fixed Knife pin which can be easily connected to a conveyor screw by means of a fastening ring. This connection can be easily released in the same way, whereby damage to the knife pin is avoided when the connection is released.
- Fig.1 only the parts of the meat grinder to which the new invention relates. Shown in perspective view are the conveyor screw 10, the knife pin 20 and the fastening ring 30 used to connect the knife pin 20 to the conveyor screw 10. In addition, two sealing rings 40, 41 are provided in this embodiment. In Fig.1 the conveying direction of the material to be minced in the meat grinder is shown.
- the knife pin 20 has a front insertion end 21, a transition area 26 and a support section 23 on which knives can be arranged in a rotationally fixed manner when viewed in the conveying direction FR.
- the conveyor screw 10 has a bearing bore 11 for the insertion end 21 of the knife pin 20.
- the cross section of this bearing bore 11 is adapted to the cross section of the insertion end 21, i.e. it has two straight side surfaces which are arranged parallel to one another both on the insertion end 21 of the knife pin 20 and in the bearing bore 11 of the conveyor screw 10. These straight side surfaces are used to transmit torque and are each connected to one another via an outwardly curved side surface.
- the support section 23 also has the shape of a dihedral in this example.
- the coordinated cross-sections of the insertion end 21 and the bearing bush 11 as well as the support section 23 and the recess in the knife ensure that when the conveyor screw 10 rotates, the knife pin 20 and the knife are also rotated.
- the knife is not shown here. During such a rotation, the knife pin 20 is held axially in position by means of the fastening ring 30.
- the fastening ring 30 is pushed onto the knife pin 20 from the rear end of the knife pin 20 in the conveying direction FR.
- the fastening ring 30 is pushed over the support section 23 of the knife pin 20 to the transition area 26, where its front side comes to rest against a stop surface 22, since the opening 31 of the fastening ring 30 is smaller than the cross section of the insertion end 21 of the knife pin 20.
- the transition area 26 between the insertion end 21 and the support section 23 of the knife pin 20 has a round cross section in this example.
- the diameter of the transition area 26 is adapted to the diameter of the opening 31 of the fastening ring 30 so that rotation of the knife pin 20 is not hindered.
- the stop surface 22 is aligned in the radial direction at an angle to the conveying direction.
- the fastening ring has an inner cone at the end of the opening 31 facing the conveyor screw.
- Other shapes of the stop surface 22 are also possible, and the opening 31 of the fastening ring 30 is advantageously adapted to this.
- the knife pin 20 is pushed with its insertion end 21 into the bearing bore 11 and the fastening ring 30 resting on the transition area 26 is connected to the conveyor screw 10.
- the conveyor screw 10 has a cylindrical bushing with an internal thread 13 in front of the bearing bore 11. This internal thread 13 interacts with an external thread 32 on the peripheral surface of the fastening ring 30.
- the screw connection between the fastening ring 30 and the conveyor screw 10 simultaneously creates a connection between the knife pin 20 and the conveyor screw 10.
- the knife pin 20 When the knife pin 20 is mounted, it carries the knives of the meat grinder in the support section 23 and ensures, via a rotationally fixed connection with these knives, that they move with the conveyor screw 10 when it rotates.
- the fastening ring 30 has an edge 35 on the side facing away from the conveyor screw 10, ie on its rear side.
- This edge 35 projects circumferentially over this rear side in the radial direction.
- the fastening ring 30 is screwed into the cylindrical bushing of the conveyor screw 10 and closes the cylindrical bushing of the conveyor screw 10 with its edge 35.
- the interior of the conveyor screw can be sealed by sealing rings 40, 41.
- a sealing ring 41 at the front in the conveying direction FR is inserted into the cylindrical bushing of the conveyor screw 10 before assembly and rests there on a contact surface 12.
- This contact surface 12 represents the exit of the bearing bore 11.
- the second sealing ring 40 at the rear in the conveying direction FR is pushed onto the fastening ring 30 before assembly and in this case held in an annular groove between the edge 35 and the external thread 32.
- the interior of the conveyor screw 10 is sealed against the mincing chamber of the meat grinder and thus against the ingress of minced material.
- the knife pin 20 After inserting the knife pin 20 and screwing the fastening ring 30 into the cylindrical bushing of the conveyor screw 10, the knife pin 20 is held axially firmly on the conveyor screw 10 and is connected to it in a rotationally fixed manner.
- This screw connection can be loosened without damaging the knife pin 20, since no torque is exerted on the knife pin 20 when the fastening ring 30 is loosened.
- notches 34 are provided on the edge 35 of the fastening ring 30 for establishing the screw connection, but in particular for loosening the screw connection. A corresponding auxiliary tool can engage in these notches 34 in order to apply a rotation to loosen the screw connection.
- Other handling means are also possible.
- a support section 23 can have a rib or inclined surface running in the conveying direction as a coding of the knife pin 20, which interacts with a suitable coding on the knife side. If the knife has a Transponder, a corresponding receiver can be provided on the knife pin 20 or a connection to such a receiver in the meat grinder can be established via an axial bore 25.
- the detachable connection between the fastening ring 30 and the conveyor screw 10 is a screw connection in this embodiment.
- other known force-fitting and/or form-fitting connections are provided.
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- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Description
Die Erfindung bezieht sich auf einen Fleischwolf mit Schneidelementen und mit einer in einem Gehäuse drehbar gelagerten Förderschnecke, welche mit einem Messerzapfen verbunden ist. Die verschiedenen Schneidelemente umfassen beispielsweise Lochscheibe, Messer und/oder Vorschneider.The invention relates to a meat grinder with cutting elements and with a conveyor screw which is rotatably mounted in a housing and which is connected to a knife pin. The various cutting elements include, for example, a perforated disk, knife and/or pre-cutter.
Bei einem bekannten Fleischwolf ist der Messerzapfen mit einem Ende drehfest mit der Förderschnecke verbunden und besitzt ausgehend von der Verbindungsstelle mit der Förderschnecke einen axial verlaufenden Tragabschnitt, auf dem die drehfest Messer lagern. Auf diese Weise ist gewährleistet, dass bei einer Umdrehung der Förderschnecke die Messer mit der gleicher Drehzahl rotieren. Die benachbart zu den Messern gelagerten Lochscheiben stützen sich bei einer solchen Drehung ortsfest am Fleischwolfgehäuse ab und besitzen eine zentrale Nabe, die vom Messerzapfen durchgriffen wird. Bekannte Messerzapfen haben unterschiedliche Querschnitte, z.B. gemäß
Aus dem Dokument
Andere Verbindungen zwischen der Förderschnecke und dem Messerzapfen sind in der
Aufgabe der vorliegenden Erfindung ist es, einen Fleischwolf mit einer antreibbaren Förderschnecke zur Verfügung zu stellen, bei dem der Messerzapfen leicht mit der Förderschnecke verbunden und auch wieder leicht gelöst werden kann. Beim Betrieb des Fleischwolfes soll sichergestellt sein, dass eine Übertragung des Drehmoments der Förderschnecke auf den Messerzapfen und damit auf die Messer gewährleistet ist.The object of the present invention is to provide a meat grinder with a drivable conveyor screw, in which the knife pin can be easily connected to the conveyor screw and easily detached again. When operating the meat grinder, it should be ensured that the torque of the conveyor screw is transmitted to the knife pin and thus to the knives.
Diese Aufgabe wird mit einem Fleischwolf mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungen beschreiben die Unteransprüche.This object is achieved with a meat grinder having the features of claim 1. Advantageous embodiments are described in the subclaims.
Dieser Fleischwolf besitzt in bekannter Weise eine im Fleischwolfgehäuse gelagerte Förderschnecke, welche insbesondere über einen Elektromotor angetrieben werden kann. An dieser Förderschnecke ist drehfest ein Messerzapfen gelagert, der mit seinem einen Ende lösbar an der Förderschnecke gehalten ist. Der Fleischwolf umfasst des Weiteren mindestens einen Schneidsatz, wobei ein Schneidsatz verschiedene Schneidelemente umfassen kann. Solche Schneidelemente sind beispielsweise ortsfest am Fleischwolfgehäuse abgestützte Lochscheiben und Vorschneider. Solche Schneidelemente umfassen des Weiteren drehfest auf einem Tragabschnitt des Messerzapfens gelagerte Messer, die mit benachbart angeordneten Lochscheiben zur Zerkleinerung des Fleisches zusammenwirken. Neu ist, dass der Messerzapfen mit seinem einen Ende, dem Einsteckende, in einer Lagerbohrung der Förderschnecke eingesteckt ist. Hierbei handelt es sich nicht um eine Pressverbindung. Um eine Drehmomentübertragung von der Förderschnecke auf den Messerzapfen zu gewährleisten, ist das Einsteckende des Messerzapfens an die Form der Lagerbohrung angepasst.This meat grinder has, in a known manner, a conveyor screw mounted in the meat grinder housing, which can be driven in particular by an electric motor. A knife pin is mounted on this conveyor screw in a rotationally fixed manner, which is detachably held on the conveyor screw at one end. The meat grinder also comprises at least one cutting set, whereby a cutting set can comprise various cutting elements. Such cutting elements are, for example, perforated disks and pre-cutters supported in a fixed position on the meat grinder housing. Such cutting elements also comprise knives mounted in a rotationally fixed manner on a support section of the knife pin, which interact with adjacent perforated disks to chop the meat. What is new is that the knife pin is inserted with one end, the insertion end, into a bearing bore of the conveyor screw. This is not a Press connection. To ensure torque transmission from the conveyor screw to the knife pin, the insertion end of the knife pin is adapted to the shape of the bearing bore.
Bei einer Ausführungsform ist die Form des Messerzapfens ist in axialer Richtung, d.h. in Förderrichtung, unverändert. Der Querschnitt des Tragabschnitts des Messerzapfens als auch des Verbindungsabschnitts mit der Förderschnecke am Einsteckende des Messerzapfens kann ein beliebiger polygoner Querschnitt sein, beispielsweise ein sogenannter Zweiflach mit zwei parallel zueinander angeordneten Übertragungsflächen für das Drehmoment.In one embodiment, the shape of the knife pin is unchanged in the axial direction, i.e. in the conveying direction. The cross section of the supporting section of the knife pin and the connecting section with the conveyor screw at the insertion end of the knife pin can be any polygonal cross section, for example a so-called dihedral with two transmission surfaces for the torque arranged parallel to one another.
Die Querschnittsform des Tragabschnitts und des Verbindungsabschnitts am Einsteckende des Messerzapfens können gleich oder unterschiedlich sein.The cross-sectional shape of the support section and the connecting section at the insertion end of the knife pin may be the same or different.
Das Einsteckende des Messerzapfens hat dabei einen größeren Umfang als der Tragabschnitt, auf dem die Messer lagern. Die Querschnittsform des Einsteckendes und des Tragabschnitts können hierbei gleich, aber auch unterschiedlich sein. Bezüglich des Querschnitts des Einsteckendes und des Tragabschnittes ist es jeweils wichtig, dass eine Drehmitnahme sichergestellt ist.The insertion end of the knife pin has a larger circumference than the support section on which the knives rest. The cross-sectional shape of the insertion end and the support section can be the same or different. With regard to the cross-section of the insertion end and the support section, it is important that rotational drive is ensured.
Bei einer Ausführungsform des Fleischwolfes ist die Querschnittsform des Einsteckendes und des Tragabschnittes des Messerzapfens gleich. Das Einsteckende hat jedoch einen größeren Umfang, überragt den Tragabschnitt in radialer Richtung, vorzugsweise ausgehend von der Mittelachse wird der Tragabschnitt von dem Einsteckende gleichmäßig umfangsseitig überragt. Durch den größeren Querschnitt des Einsteckendes ist im Übergangsbereich zwischen Einsteckende und Tragabschnitt umfangsseitig eine Anschlagfläche gebildet. Diese Anschlagfläche dient als Anschlag für einen Befestigungsring. Dieser Befestigungsring besitzt eine entsprechend große Öffnung, so dass er einerseits vom hinteren Ende des Tragabschnitts bis an die Anschlagfläche geschoben werden kann Diese Öffnung des Befestigungsrings ist so groß, dass eine Rotation des Messerzapfens nicht behindert wird. Anderseits ist die Öffnung so klein, dass der Befestigungsring nicht über das Einsteckende des Messerzapfens passt.In one embodiment of the meat grinder, the cross-sectional shape of the insertion end and the support section of the knife pin are the same. However, the insertion end has a larger circumference, projects beyond the support section in the radial direction, preferably starting from the central axis, the support section is evenly projected over by the insertion end on the circumference. Due to the larger cross-section of the insertion end, a stop surface is formed on the circumference in the transition area between the insertion end and the support section. This stop surface serves as a stop for a fastening ring. This fastening ring has a correspondingly large opening so that it can be pushed from the rear end of the support section to the stop surface. This opening of the fastening ring is so large that a Rotation of the knife pin is not hindered. On the other hand, the opening is so small that the fastening ring does not fit over the insertion end of the knife pin.
Bei einer weiteren Ausführungsform haben der Tragabschnitt des Messerzapfens und das Einsteckende des Messerzapfens eine unterschiedliche Querschnittsform oder eine gleiche Querschnittsformen, jedoch in radial versetzter Anordnung, so dass das Einsteckende den Tragabschnitt wenn nicht umfangsseitig so doch zumindest an mehreren Umfangsstellen bzw. -abschnitten überragt und sich im Übergangsbereich zwischen Einsteckende und Tragabschnitt umfangsseitig eine oder mehrere Anschlagflächen für den separaten Befestigungsring ergeben.In a further embodiment, the support section of the knife pin and the insertion end of the knife pin have a different cross-sectional shape or an identical cross-sectional shape, but in a radially offset arrangement, so that the insertion end projects beyond the support section, if not circumferentially, then at least at several circumferential points or sections, and one or more stop surfaces for the separate fastening ring are formed on the circumference in the transition area between the insertion end and the support section.
Bei der Montage des Messerzapfens wird der Befestigungsring mit seinem Einsteckende in die Lagerbohrung der Förderschnecke eingesteckt. Der auf den Messerzapfen aufgeschobene und an der Anschlagfläche des Messerzapfens anliegende Befestigungsring wird anschließend mit der Förderschnecke verbunden. Bei dieser Verbindung handelt es sich um eine lösbare Verbindung, wobei der Befestigungsring und die Förderschnecke zueinander passende Verbindungsmittel besitzen, nämlich passende formschlüssige und/oder kraftschlüssige Verbindungen, z.B. eine Schraubverbindung oder eine Feder-/Nutverbindung, vorzugsweise eine Schraubverbindung.When assembling the knife pin, the fastening ring is inserted with its insertion end into the bearing bore of the conveyor screw. The fastening ring, which is pushed onto the knife pin and rests against the stop surface of the knife pin, is then connected to the conveyor screw. This connection is a detachable connection, whereby the fastening ring and the conveyor screw have connecting means that match each other, namely suitable positive and/or non-positive connections, e.g. a screw connection or a spring/groove connection, preferably a screw connection.
Bei einer bevorzugten Ausführungsform besitzt der Befestigungsring ein Außengewinde an seiner Umfangsfläche und die Förderschnecke ein passendes Innengewinde. Dazu ist am ausgangsseitigen Ende vor der Lagerbohrung in der Förderschnecke eine zylindrische Buchse mit entsprechendem Innengewinde vorgesehen. Bei dieser Ausführungsform wird der Befestigungsring ebenso über den Tragabschnitt bis an die Anschlagfläche geschoben und das Einsteckende des Messerzapfens in die Lagerbohrung eingesetzt. Da die Öffnung des Befestigungsrings kleiner ist als der Durchmesser des Einsteckendes, wird der Messerzapfen durch die Schraubverbindung zwischen Befestigungsring und Förderschnecke axial in Position gehalten. Die Montage des Messerzapfens an der Förderschnecke ist in einfacher Weise möglich. Die Drehmomentübertragung zwischen Förderschnecke und Messerzapfen wird über die aufeinander abgestimmten Querschnitte von Einsteckende und Lagerbohrung sichergestellt.In a preferred embodiment, the fastening ring has an external thread on its peripheral surface and the conveyor screw has a matching internal thread. For this purpose, a cylindrical bushing with a corresponding internal thread is provided at the output end in front of the bearing bore in the conveyor screw. In this embodiment, the fastening ring is also pushed over the support section up to the stop surface and the insertion end of the knife pin is inserted into the bearing bore. Since the opening of the fastening ring is smaller than the diameter of the insertion end, the knife pin is held axially in position by the screw connection between the fastening ring and the conveyor screw. The assembly of the knife pin on The screw conveyor can be easily adjusted. The torque transmission between the screw conveyor and the knife pin is ensured by the coordinated cross sections of the spigot end and the bearing bore.
In vorteilhafter Weise ist ein solcher Messerzapfen leichter von der Förderschnecke zu lösen als bekannte Messerzapfen. Bei der Demontage des Messerzapfens werden insbesondere Beschädigungen am Messerzapfen vermieden, da die Kräfte zum Lösen der Schraubverbindung ausschließlich auf dem Befestigungsring wirken. Zur Erleichterung des Lösens der Schraubverbindung sind bei einer vorteilhaften Ausführungsform Handhabungsmittel am Befestigungsring vorhanden, beispielsweise in Form von Nuten oder Kerben. Diese Handhabungsmittel bieten beim Lösen der Schraubverbindung Eingriffsmöglichkeiten für passende Werkzeuge.Advantageously, such a knife pin is easier to remove from the conveyor screw than known knife pins. When dismantling the knife pin, damage to the knife pin is avoided in particular, since the forces for loosening the screw connection act exclusively on the fastening ring. To make it easier to loosen the screw connection, in an advantageous embodiment, handling means are provided on the fastening ring, for example in the form of grooves or notches. These handling means offer intervention options for suitable tools when loosening the screw connection.
Bei einer weiteren Ausführungsfrom besitzt der Befestigungsring eine umlaufende Rippe an seiner Umfangsfläche, die mit einer Ringnut in der zylindrischen Buchse am ausgangsseitigen Ende vor der Lagerbohrung in der Förderschnecke zusammenwirkt. Auch andere kraft- und/oder formschlüssige Verbindungen zur Verbindung des Befestigungsrings sind verwendbar, wie z.B. Verhakungen. Auch Bajonettverschlüsse wie sie von der Befestigung eines Objektivs an einer Kamera bekannt sind, sind einsetzbar, nämlich indem Nasen am Befestigungsring und entsprechende Aussparungen in der zylindrischen Buchse vorgesehen werden.In a further embodiment, the fastening ring has a circumferential rib on its peripheral surface, which interacts with an annular groove in the cylindrical bushing at the output end in front of the bearing bore in the conveyor screw. Other force- and/or form-fitting connections can also be used to connect the fastening ring, such as hooks. Bayonet locks, such as those known from attaching a lens to a camera, can also be used, namely by providing lugs on the fastening ring and corresponding recesses in the cylindrical bushing.
Zusätzlich kann bei der Verbindung zwischen Messerzapfen und Förderschnecke eine Abdichtung mittels Dichtringen vorgesehen werden, um eine Eindringen von Zerkleinerungsgut in den Bereich der Schraubverbindung und der Lagerbohrung zu verhindern.In addition, the connection between the knife pin and the conveyor screw can be sealed using sealing rings to prevent the ingress of shredded material into the area of the screw connection and the bearing bore.
Der neue Fleischwolf besitzt in bekannter Weise eine antreibbare Förderschnecke und einen drehfest an der Förderschnecke gelagerten Messerzapfen, der in vorteilhafter Weise mittels eines Befestigungsrings leicht mit einer Förderschnecke verbunden werden kann. Diese Verbindung ist in gleicher Weise leicht lösbar, wobei beim Lösen der Verbindung Beschädigungen des Messerzapfens vermieden werden.The new meat grinder has, as is well known, a drivable conveyor screw and a rotationally fixed Knife pin which can be easily connected to a conveyor screw by means of a fastening ring. This connection can be easily released in the same way, whereby damage to the knife pin is avoided when the connection is released.
Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels anhand der Zeichnung näher erläutert.The invention is explained in more detail below using an embodiment example with reference to the drawing.
Zur besseren Übersichtlichkeit zeigt die
Der Messerzapfen 20 besitzt in Förderrichtung FR gesehen ein vorderes Einsteckende 21, einen Übergangsbereich 26 und einen Tragabschnitt 23, auf dem Messer drehfest angeordnet werden können. Die Förderschnecke 10 weist eine Lagerbohrung 11 für das Einsteckende 21 des Messerzapfens 20 auf. Der Querschnitt dieser Lagerbohrung 11 ist an den Querschnitt des Einsteckendes 21 angepasst, d.h. besitzt zwei gerade Seitenflächen, welche parallel zueinander sowohl am Einsteckende 21 des Messerzapfens 20 als auch in der Lagerbohrung 11 der Förderschneckke 10 angeordnet sind. Diese geraden Seitenflächen dienen zur Drehmomentübertragung und sind jeweils über eine nach außen gewölbte Seitenfläche miteinander verbunden. Auch der Tragabschnitt 23 hat in diesem Beispiel die Form eines Zweiflach. Die aufeinander abgestimmten Querschnitte des Einsteckendes 21 und der Lagerbuchse 11 sowie des Tragabschnitts 23 und der Ausnehmung im Messer gewährleisten, dass bei einer Drehung der Förderschnecke 10 der Messerzapfen 20 und auch das Messer mitgedreht wird. Das Messer ist hier nicht gezeigt. Bei einer solchen Drehung wird der Messerzapfen 20 mittels des Befestigungsrings 30 axial in Position gehalten.The
Vor der Montage des Messerzapfens 20 wird der Befestigungsring 30 vom in Förderrichtung FR hinteren Ende des Messerzapfens 20 auf den Messerzapfen 20 aufgesteckt. Der Befestigungsring 30 wird über den Tragabschnitt 23 des Messerzapfens 20 bis zum Übergangsbereich 26 geschoben, wo er mit seiner Vorderseite an eine Anschlagfläche 22 zur Anlage kommt, da die Öffnung 31 des Befestigungsrings 30 kleiner ist als der Querschnitt des Einsteckendes 21 des Messerzapfens 20. Der Übergangsbereich 26 zwischen dem Einsteckende 21 und dem Tragabschnitt 23 des Messerzapfens 20 besitzt in diesem Beispiel einen runden Querschnitt. Der Durchmesser des Übergangsbereiches 26 ist an den Durchmesser der Öffnung 31 des Befestigungsrings 30 angepasst, so dass eine Rotation des Messerzapfens 20 nicht behindert wird. Die Anschlagfläche 22 ist in diesem Beispiel in radialer Richtung schräg zur Förderrichtung ausgerichtet. Kompatibel dazu besitzt der Befestigungsring einen Innenkonus an seinem der Förderschnecke zuweisenden Ende der Öffnung 31. Es sind auch andere Formen der Anschlagfläche 22 möglich, vorteilhafterweise ist die Öffnung 31 des Befestigungsrings 30 daran angepasst.Before the
Zur Montage wird der Messerzapfen 20 mit seinem Einsteckende 21 in die Lagerbohrung 11 eingeschoben und der auf dem Übergangsbereich 26 lagernde Befestigungsring 30 mit der Förderschnecke 10 verbunden. Hierzu besitzt die Förderschnecke 10 vor der Lagerbohrung 11 eine zylindrische Buchse mit einem Innengewinde 13. Dieses Innengewinde 13 wirkt mit einem Außengewinde 32 an der Umfangsfläche des Befestigungsrings 30 zusammen. Die Schraubverbindung zwischen Befestigungsring 30 und Förderschnecke 10 stellt gleichzeitig eine Verbindung zwischen Messerzapfen 20 und Förderschnecke 10 her. Bei montiertem Messerzapfen 20 trägt dieser im Tragabschnitt 23 die Messer des Fleischwolfs und gewährleistet über eine drehfeste Verbindung mit diesen Messern, dass bei Drehung der Förderschnecke 10 sich diese mitbewegen.For assembly, the
Bei dieser Ausführungsform besitzt der Befestigungsring 30 an der zur Förderschnecke 10 abweisenden Seite, d.h. an seiner Rückseite, einen Rand 35.In this embodiment, the
Dieser Rand 35 ragt in radialer Richtung umfangsseitig über diese Rückseite. Bei montierten Messerzapfen 20 ist der Befestigungsring 30 in die zylindrische Buchse der Förderschnecke 10 eingedreht und verschließt mit seinem Rand 35 die zylindrische Buchse der Förderschnecke 10. Zusätzlich kann das Innere der Förderschnecke durch Dichtringe 40, 41 abgedichtet werden. Hierbei wird ein in Förderrichtung FR vorderer Dichtring 41 vor der Montage in die zylindrische Buchse der Förderschnecke 10 eingelegt und liegt dort an einer Anlagefläche 12. Diese Anlagefläche 12 stellt den Ausgang der Lagerbohrung 11 dar. Der zweite in Förderrichtung FR hintere Dichtring 40 wird vor der Montage auf dem Befestigungsring 30 aufgeschoben und in diesem Fall in einer Ringnut zwischen dem Rand 35 und dem Außengewinde 32 gehalten. Das Innere der Förderschnecke 10 ist gegenüber dem Zerkleinerungsraum des Fleischwolfs und damit vor Eindringen von Zerkleinerungsgut abgedichtet.This
Nach dem Einsetzen des Messerzapfens 20 und Eindrehen des Befestigungsrings 30 in die zylindrische Buchse der Förderschnecke 10 wird der Messerzapfen 20 axial fest an der Förderschnecke 10 gehalten und ist drehfest mit dieser verbunden. Ein Lösen dieser Schraubverbindung ist ohne Beschädigung des Messerzapfens 20 möglich, da beim Lösen des Befestigungsrings 30 kein Drehmoment auf den Messerzapfen 20 ausgeübt wird. Für das Herstellen der Schraubverbindung aber insbesondere auch für das Lösen der Schraubverbindung sind in diesem Fall Kerben 34 am Rand 35 des Befestigungsrings 30 vorgesehen. In diese Kerben 34 kann ein entsprechendes Hilfswerkzeug eingreifen, um eine Drehung zum Lösen der Schraubverbindung aufzubringen. Es sind auch andere Handhabungsmittel möglich.After inserting the
Die Erfindung ist nicht auf das gezeigte Ausführungsbeispiel beschränkt. So sind andere Querschnitte des Verbindungsabschnitts am Einsteckende 21 oder des Tragabschnittes 23 des Messerzapfens 20 denkbar. Zusätzlich kann ein Tragabschnitt 23 eine in Förderrichtung verlaufende Rippe oder Schrägfläche als Kodierung des Messerzapfens 20 besitzen, welche mit einer passenden messerseitigen Kodierung zusammenwirkt. Besitzt das Messer einen Transponder, so kann am Messerzapfen 20 ein entsprechender Empfänger vorgesehen sein oder eine Verbindung zu einem solchen Empfänger im Fleischwolf über eine axiale Bohrung 25 hergestellt werden.The invention is not limited to the embodiment shown. Other cross sections of the connecting section at the
Die lösbare Verbindung zwischen Befestigungsring 30 und Förderschnecke 10 ist in diesem Ausführungsbeispiel eine Schraubverbindung. Bei anderen Ausführungsbeispielen der Erfindung sind andere bekannte kraft- und/oder formschlüssige Verbindungen vorgesehen.The detachable connection between the
- 1010
- FörderschneckeAuger
- 1111
- LagerbohrungBearing bore
- 1212
- AnlageflächeContact surface
- 1313
- Innengewindeinner thread
- 2020
- MesserzapfenKnife tenon
- 2121
- EinsteckendeInsertion end
- 2222
- AnschlagflächeStop surface
- 2323
- TragabschnittSupport section
- 2525
- axiale Bohrungaxial bore
- 3030
- BefestigungsringMounting ring
- 3131
- Öffnungopening
- 3232
- AußengewindeExternal thread
- 3434
- Kerbescore
- 3535
- Randedge
- FRFR
- FörderrichtungConveying direction
Claims (16)
- Meat mincer with a drivable feed worm (10), with a blade shaft (20) mounted nonrotatably on the feed worm (10) and with at least one cutting set,- wherein a cutting set comprises at least one perforated disc supported in a stationary manner on the mincer housing and a blade mounted in a rotationally fixed manner on a support section (23) of the blade shaft (20),- whereby the blade shaft (20) is held at the feed worm (10) with one end,
characterised in that- the blade shaft (20) is inserted into a bearing bore (11) of the feed worm (10), whereby the cross-section of the bearing bore (11) is adjusted to the cross-section of the insertion end (21) of the blade shaft (20),- the insertion end (21) of the blade shaft (20) projects the support section (23) of the blade shaft (20) in a radial direction and that there is a stop section (22) on the transition area (26) between the end of the shaft (21) and the support section (23),- a detachable coupling of the blade shaft (20) with the feed worm (10) is achieved by means of a mounting ring (30) which is pushed to the stop section (22) on the one hand over the support section (23) of the blade shaft (20), and on the other hand is connectable to the feed worm (10), whereby the mounting ring (30) and the feed worm (10) have matching joints. - Meat mincer as defined in claim 1, characterised by the presence of a detachable coupling between the mounting ring (30) and the feed worm (10) by means of a positive and/or positive coupling.
- Meat-mincer according to claim 2, characterised by a screw connection or a springgroove connection or an interlocking or a bayonet connection, preferably a screw connection, between the mounting ring (30) and the feed worm (10).
- Meat mincer according to claim 3, characterised by the mounting ring (30) having an external thread (32) at its peripheral area (26) and the feed worm (10) having a suitable internal thread (13) for the screw connection, with a cylindrical bushing with corresponding internal thread (13) at the output end before the bearing bore (11).
- Meat mincer according to one of claims 1 to 4, characterised in that the diameter of the opening (31) in the mounting ring (30) is adapted to the diameter of the transition area (26) of the blade shaft (20), namely between the insertion end (21) and the support section (23), and this diameter of the opening (31) in the mounting ring (30) is smaller than the diameter of the insertion end (21) of the blade shaft (20).
- Meat-mincer according to one of claims 1 to 5, characterised by a rotating edge (35) on the mounting ring (30), whereby this edge (35) is located at the end of the mounting ring (30), which is directed away from the feed worm (10).
- Meat mincer according to one of claims 1 to 6, characterised by the presence of sealing rings (40, 41) in the connection area between the mounting ring (30) and the feed worm (10).
- Meat mincer according to claim 7, characterised by a front sealing ring (41) in the direction of delivery at one end of the screw connection and a rear sealing ring (40) in the direction of the screw connection.
- Meat-mincer according to claim 7 or 8, characterised by the mounting ring (30) having a groove to hold the rear sealing ring (40), with the groove being preferably placed between the peripheral area with the external thread (32) and the circumferential edge (35).
- Meat mincer according to one of claims 8 or 9, characterised by the front sealing ring (41) being attached to a contact surface (12) which limits the cylindrical bushing with the internal thread (11) to the front.
- Meat mincer according to one of claims 1 to 10, characterised by the mounting ring (30) having handling means, for example, in the form of grooves or notches (34).
- Meat-mincer according to one of claims 1 to 11, characterised by blades positioned on the support sections (23) of the blade shaft (20) having an inside coding element, and the blade shaft (20) having a shaft-side coding element (24) at its circumference in the support sections (23), for example, an oblique surface or a rib that tilts in the axial direction.
- Meat mincer according to one of claims 1 to 12, characterised by blades positioned on the support section (23) of the blade shaft (20) having a transponder, which interacts with a receiver, which is accessible via an axial bore (25) of the blade shaft (20).
- Meat-mincer according to one of claims 1 to 13, characterised by the cross-section (23) of the blade shaft (20) having a comparable cross-sectional shape to the connector section at the insertion end (21) of the blade shaft (20), preferably with the shape of a dihedron.
- Meat-mincer according to one of claims 1 to 13, characterised by the cross-section (23) of the blade shaft (20) having a cross-sectional shape other than the connector section at the insertion end (21) of the blade shaft (20).
- Meat-mincer according to one of claims 1 to 15, characterised by the insertion end (21) of the blade shaft (20) completely projecting the support section (23) of the blade shaft (20) in a radial direction or in sections extensively, and by the transition area (26) between the insertion end (21) and the support section (23) having one or more stop sections (22).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE202020105052.4U DE202020105052U1 (en) | 2020-09-02 | 2020-09-02 | meat grinder |
Publications (3)
Publication Number | Publication Date |
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EP3964295A1 EP3964295A1 (en) | 2022-03-09 |
EP3964295C0 EP3964295C0 (en) | 2024-07-24 |
EP3964295B1 true EP3964295B1 (en) | 2024-07-24 |
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EP21194254.5A Active EP3964295B1 (en) | 2020-09-02 | 2021-09-01 | Mincer |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE202020106351U1 (en) | 2020-11-05 | 2020-11-19 | Lumbeck & Wolter GmbH. & Co. KG. | Support cross for a meat grinder |
DE102021119200A1 (en) | 2021-07-23 | 2023-01-26 | Kutter- und Gerätebau Wetter GmbH | Screw conveyor device with detachable trunnion and meat grinder herewith |
WO2023001663A1 (en) | 2021-07-23 | 2023-01-26 | Kutter- und Gerätebau Wetter GmbH | Screw conveyor device having a removable pin, and mincer provided therewith |
DE202021103953U1 (en) | 2021-07-23 | 2021-07-29 | Kutter- und Gerätebau Wetter GmbH | Conveyor screw device with removable pin and meat grinder herewith |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE809769C (en) | 1949-05-10 | 1951-08-02 | Alexanderwerk A G | Wing knives and knife tenons for meat cutting machines |
US4018390A (en) | 1976-01-22 | 1977-04-19 | Shinnosuke Funakubo | Sleeve for use in a meat chopper |
US4004742A (en) | 1976-02-17 | 1977-01-25 | Speco, Inc. | Rotary meat grinder with bone-collecting facilities |
DE8032323U1 (en) | 1980-12-04 | 1981-03-12 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | CRUSHING DEVICE, ESPECIALLY MEAT GRINDER OR THE LIKE. |
DE10026825C2 (en) | 2000-05-30 | 2002-10-31 | Mars Inc | comminution device |
CN208436993U (en) * | 2018-05-04 | 2019-01-29 | 上海林生厨具有限公司 | A kind of meat grinder |
DE202020102505U1 (en) | 2020-05-05 | 2020-05-13 | Lumbeck & Wolter GmbH. & Co. KG. | Cutting set system for a meat grinder |
-
2020
- 2020-09-02 DE DE202020105052.4U patent/DE202020105052U1/en active Active
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