EP3964295B3 - Hachoir à viande - Google Patents

Hachoir à viande Download PDF

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Publication number
EP3964295B3
EP3964295B3 EP21194254.5A EP21194254A EP3964295B3 EP 3964295 B3 EP3964295 B3 EP 3964295B3 EP 21194254 A EP21194254 A EP 21194254A EP 3964295 B3 EP3964295 B3 EP 3964295B3
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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.)
Active
Application number
EP21194254.5A
Other languages
German (de)
English (en)
Other versions
EP3964295B1 (fr
EP3964295A1 (fr
EP3964295C0 (fr
Inventor
Fabian Döring
Alexander Behle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lumbeck & Wolter & Co KG GmbH
Original Assignee
Lumbeck & Wolter & Co KG GmbH
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Lumbeck & Wolter & Co KG GmbH filed Critical Lumbeck & Wolter & Co KG GmbH
Publication of EP3964295A1 publication Critical patent/EP3964295A1/fr
Publication of EP3964295B1 publication Critical patent/EP3964295B1/fr
Publication of EP3964295C0 publication Critical patent/EP3964295C0/fr
Application granted granted Critical
Publication of EP3964295B3 publication Critical patent/EP3964295B3/fr
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Classifications

    • 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
    • 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
    • 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 US 4,018390 A a support section for the knife in square shape and according to DE 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 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 also 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, one end of which is detachably held on the conveyor screw.
  • 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 that are supported in a fixed position on the meat grinder housing.
  • Such cutting elements also comprise knives that are mounted in a rotationally fixed manner on a support section of the knife pin, which interact with adjacent perforated disks to chop up the meat.
  • 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.
  • 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 supporting 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 in from the rear
  • 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 in the transition area between the insertion end and the support section on the circumferential side.
  • 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 knife pin can be easily mounted on the conveyor screw. The torque transmission between the conveyor screw and the knife pin is ensured by the coordinated cross sections of the insertion 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.
  • sealing rings can be used at the connection between the knife pin and the conveyor screw to prevent the penetration of shredded material into the area of the screw connection and the bearing bore.
  • the new meat grinder has, in the usual way, a drivable conveyor screw and a knife pin that is mounted on the conveyor screw in a rotationally fixed manner and can be easily connected to a conveyor screw using a fastening ring. This connection can also be easily released in the same way, and 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, as seen in the conveying direction FR, 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.
  • 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 at the insertion end 21 of the knife pin 20 and in the bearing bore 11 of the conveyor screw 10. These straight side surfaces serve 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, i.e. 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 lies 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 is 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 shredding chamber of the meat grinder and thus against the ingress of shredded 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 also 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 code for the knife pin 20, which interacts with a suitable code 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 can be established in the meat grinder 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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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (15)

  1. Hachoir à viande comprenant une vis sans fin (10) entraînable, un axe porte-lame (20) en appui fixe contre la vis sans fin (10) et au moins un accessoire de coupe,
    - sachant que l'accessoire de coupe comprend au moins un disque ajouré en appui fixe contre le boîtier du hachoir à viande, et un couteau en appui fixe sur un segment support (23) de l'axe porte-lame (20),
    - sachant que l'axe porte-lame (20) est maintenu par une extrémité, de manière détachable, contre la vis sans fin (10),
    caractérisé en ce que
    - l'axe porte-lame (20) est emmanché dans un alésage palier (11) de la vis sans fin (10), sachant que la section de l'alésage palier (11) est adaptée à la section de l'extrémité emboîtable (21) de l'axe porte-lame (20),
    - l'extrémité emboîtable (21) de l'axe porte-lame (20) dépasse en direction radiale le segment support (23) de l'axe porte-lame (20), et qu'une surface butée (22) est présente périphériquement dans la zone de transition (26) entre l'extrémité emboîtable (21) et le segment support (23),
    - au moyen d'une bague de fixation (30) qui d'une part est poussée jusqu'à la surface butée (22) par-dessus le segment support (23) de l'axe porte-lame (20) et qui d'autre part est reliable avec la vis sans fin (10), une liaison détachable de l'axe porte-lame (20) avec la vis sans fin (10) est obtenue, sachant que la bague de fixation (30) et la vis sans fin (10) présentent des moyens de jonction mutuellement adaptés
    - un bord (35) périphérique est disposé contre la bague de fixation (30), sachant que ce bord (35) se trouve contre l'extrémité - de la bague de fixation (30) - qui regarde en direction opposée de la vis sans fin (10).
  2. Hachoir à viande selon la revendication 1, caractérisé en ce qu'il y a présence d'une liaison détachable entre la bague de fixation (30) et la vis sans fin (10) au moyen d'une liaison par adhérence de formes et/ou par adhérence de forces.
  3. Hachoir à viande selon la revendication 2, caractérisé en ce qu'une liaison vissée ou une liaison par tenon et mortaise ou une liaison par accrochage ou une liaison à baïonnette, de préférence une liaison vissée, est présente entre la bague de fixation (30) et la vis sans fin (10).
  4. Hachoir à viande selon la revendication 3, caractérisé en ce que la bague de fixation (30) possède un filetage extérieur (32) sur sa surface circonférentielle (26) et que la vis sans fin (10) possède un filetage intérieur (13) adapté pour obtenir la liaison vissée, sachant que contre l'extrémité côté sortie de l'alésage palier (11) est présente une douille cylindrique présentant un filetage intérieur (13) correspondant.
  5. Hachoir à viande selon l'une des revendications 1 à 4, caractérisé en ce que le diamètre de l'ouverture (31) dans la bague de fixation (30) est adapté au diamètre de la zone de transition (26) de l'axe porte-lame (20), à savoir entre l'extrémité emboîtable (21) et le segment support (23), et que ce diamètre de l'ouverture (31) dans la bague de fixation (30) est inférieur au diamètre de l'extrémité emboîtable (21) de l'axe porte-lame (20).
  6. Hachoir à viande selon l'une des revendications 1 à 5, caractérisé en ce que des bagues d'étanchéité (40, 41) sont présentes dans la zone de liaison entre la bague de fixation (30) et la vis sans fin (10).
  7. Hachoir à viande selon la revendication 6, caractérisé en ce qu'une bague d'étanchéité (41) avant, observée dans le sens du refoulement, est disposée contre une extrémité de la liaison vissée, et qu'une bague d'étanchéité (40) arrière, observée dans le sens du refoulement, est présente à l'autre extrémité de la liaison vissée.
  8. Hachoir à viande selon la revendication 6 ou 7, caractérisé en ce que la bague de fixation (30) présente une gorge servant à recevoir la bague d'étanchéité (40) arrière, sachant que la gorge est disposée de préférence entre la surface périphérique munie du filetage extérieur (32) et le bord périphérique (35).
  9. Hachoir à viande selon l'une des revendications 7 ou 8, caractérisé en ce que la bague d'étanchéité (41) avant applique contre une surface d'applique (12) qui limite, en direction avant, la douille cylindrique avec le filetage intérieur (11).
  10. Hachoir à viande selon l'une des revendications 1 à 9, caractérisé en ce que la bague de fixation (30) possède des moyens de manipulation par exemple sous la forme de gorges ou d'entailles (34).
  11. Hachoir à viande selon l'une des revendications 1 à 10, caractérisé en ce que des lames en appui sur le segment support (23) de l'axe porte-lame (20) possèdent un élément de codage côté lame, et que l'axe porte-lame (20) possède sur sa surface périphérique un élément de codage (24) côté axe porte-lame, dans la zone support (23), par exemple une surface oblique ou une nervure ayant un tracé axial.
  12. Hachoir à viande selon l'une des revendications 1 à 11, caractérisé en ce que des lames en appui sur le segment support (23) de l'axe porte-lame (20) possèdent un transpondeur interagissant avec un récepteur qui est accessible via un alésage axial (25) de l'axe porte-lame (20).
  13. Hachoir à viande selon l'une des revendications 1 à 12, caractérisé en ce que le segment support (23) de l'axe porte-lame (20) possède une section de forme comparable au segment de liaison sur l'extrémité emboîtable (21) de l'axe porte-lame (20), de préférence la forme d'un corps cylindrique à deux plats opposés.
  14. Hachoir à viande selon l'une des revendications 1 à 12, caractérisé en ce que le segment support (23) de l'axe porte-lame (20) possède une section de forme différente de celle du segment de liaison sur l'extrémité emboîtable (21) de l'axe porte-lame (20).
  15. Hachoir à viande selon l'une des revendications 1 à 14, caractérisé en ce que l'extrémité emboîtable (21) de l'axe porte-lame (20) dépasse entièrement en direction radiale - sur sa périphérie ou sur des segments de sa périphérie - le segment support (23) de l'axe porte-lame (20), et qu'une ou plusieurs surface(s) butée(s) (22) est/sont présente(s) dans la zone de transition (26) entre l'extrémité emboîtable (21) et le segment support (23),
EP21194254.5A 2020-09-02 2021-09-01 Hachoir à viande Active EP3964295B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202020105052.4U DE202020105052U1 (de) 2020-09-02 2020-09-02 Fleischwolf

Publications (4)

Publication Number Publication Date
EP3964295A1 EP3964295A1 (fr) 2022-03-09
EP3964295B1 EP3964295B1 (fr) 2024-07-24
EP3964295C0 EP3964295C0 (fr) 2024-07-24
EP3964295B3 true EP3964295B3 (fr) 2025-02-12

Family

ID=72613326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21194254.5A Active EP3964295B3 (fr) 2020-09-02 2021-09-01 Hachoir à viande

Country Status (4)

Country Link
EP (1) EP3964295B3 (fr)
DE (1) DE202020105052U1 (fr)
ES (1) ES2992260T7 (fr)
PL (1) PL3964295T6 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202020106351U1 (de) 2020-11-05 2020-11-19 Lumbeck & Wolter GmbH. & Co. KG. Stützkreuz für einen Fleischwolf
WO2023001663A1 (fr) 2021-07-23 2023-01-26 Kutter- und Gerätebau Wetter GmbH Dispositif transporteur à vis ayant une broche amovible, et hachoir équipé de celui-ci
DE202021103953U1 (de) 2021-07-23 2021-07-29 Kutter- und Gerätebau Wetter GmbH Förderschneckenvorrichtung mit demontierbarem Zapfen und Fleischwolf hiermit
DE102021119200B4 (de) 2021-07-23 2026-04-02 Kutter- und Gerätebau Wetter GmbH Förderschneckenvorrichtung mit demontierbarem Zapfen und Fleischwolf hiermit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE809769C (de) 1949-05-10 1951-08-02 Alexanderwerk A G Fluegelmesser und Messerzapfen fuer Fleischschneidmaschinen
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 (de) 1980-12-04 1981-03-12 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Zerkleinerungsvorrichtung, insbesondere fleischwolf o.dgl.
DE10026825C2 (de) 2000-05-30 2002-10-31 Mars Inc Zerkleinerungsvorrichtung
CN208436993U (zh) * 2018-05-04 2019-01-29 上海林生厨具有限公司 一种绞肉机
DE202020102505U1 (de) 2020-05-05 2020-05-13 Lumbeck & Wolter GmbH. & Co. KG. Schneidsatzsystem für einen Fleischwolf

Also Published As

Publication number Publication date
EP3964295B1 (fr) 2024-07-24
DE202020105052U1 (de) 2020-09-08
ES2992260T7 (en) 2025-05-22
EP3964295A1 (fr) 2022-03-09
EP3964295C0 (fr) 2024-07-24
ES2992260T3 (es) 2024-12-10
PL3964295T3 (pl) 2024-12-09
PL3964295T6 (pl) 2025-06-09

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