EP2845649B1 - Dispositif de découpe - Google Patents

Dispositif de découpe Download PDF

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Publication number
EP2845649B1
EP2845649B1 EP14002977.8A EP14002977A EP2845649B1 EP 2845649 B1 EP2845649 B1 EP 2845649B1 EP 14002977 A EP14002977 A EP 14002977A EP 2845649 B1 EP2845649 B1 EP 2845649B1
Authority
EP
European Patent Office
Prior art keywords
outer ring
blade
knife
cutting device
bead
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
EP14002977.8A
Other languages
German (de)
English (en)
Other versions
EP2845649A1 (fr
Inventor
Alexander Behle
Fabian Döring
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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Application filed by Lumbeck & Wolter & Co KG GmbH filed Critical Lumbeck & Wolter & Co KG GmbH
Publication of EP2845649A1 publication Critical patent/EP2845649A1/fr
Application granted granted Critical
Publication of EP2845649B1 publication Critical patent/EP2845649B1/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
    • B02C18/305—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 cutting device, in particular for a meat grinder, which comprises an outer ring in addition to the actual knife.
  • Conventional meat mincers are known to have a cutting set, each with knives arranged between two perforated disks.
  • This cutting set which consists of perforated disks and knives, is held together with pretension in the axial direction of the meat grinder.
  • the cutting set of such a meat grinder is exposed to high loads.
  • the material to be shredded is moved in the axial direction by the screw conveyor and pressed against the cutting set and thus against the perforated discs and knives with high pressure.
  • the HD knives used for this must be designed for such heavy-duty use. A good cutting effect is achieved in particular when the knives and perforated disks are highly parallel to one another. It is known to use an outer ring in the area of the HD knife.
  • the outer ring also absorbs axial forces when used as a pressure carrier.
  • the knife rotatably arranged within this outer ring can move freely. After a certain period of use, it is necessary to regrind the cutting edges of the knives in order to ensure good cutting quality.
  • the cutting set ie the knife together with the outer ring, is removed from the meat grinder.
  • it is important that the outer ring and the associated knife are not mixed up ie a knife is always matched to an outer ring. If the knife and the outer ring are not connected to one another, disassembly, e.g. for sharpening the blades of the knife, can quickly lead to confusion and a knife with an unrelated outer ring can be inserted into the meat grinder.
  • the area of the screw connection for attaching the cutting edges and the area of the screw connection between the knife and the outer ring can be soiled by the material to be cut when the knife is used, so that such a cutting device has to be laboriously cleaned before being reinstalled in the meat grinder in order to meet the hygiene requirements to wear.
  • the invention is therefore based on the object of ensuring the functional reliability of a cutting device for high-performance use and, taking into account the hygiene requirements, of reducing the effort for dismantling and reinstallation.
  • a cutting device which comprises an outer ring and a rotatable knife arranged inside the outer ring.
  • the knife is detachably held on the outer ring. No screw connections are provided for this and thus has one in Meat grinder cutting device used no screw connections in the working area of the meat grinder.
  • Such a knife can in particular be used as part of a cutting set for a meat grinder between two perforated disks and has a suitable bore in the central hub for the rotationally fixed connection to the pin of the screw conveyor of the meat grinder. This enables the knife to be mounted in a torque-transmitting manner during a rotary movement in a direction of rotation initiated by the screw conveyor of the meat grinder.
  • knife blades are arranged around the hub of the knife, which extend outward from the hub and are each provided with double-sided cutting edges. These cutting edges lie, for example, on adjacent perforated disks of the meat grinder.
  • the outer ring releasably connected to the knife is designed in this case as an open ring. This means that the ring has a gap in the ring wall. The ends of the open outer ring are aligned with each other and form the gap, which has such a length that the wedge provided in the housing of the meat grinder for securing the rotationally fixed arrangement of the perforated disks and the outer rings can engage in the gap in the assembled state of the cutting device and the rotatable arrangement of this outer ring secures.
  • the knife can be removed from the outer ring in the disassembled state by expanding the open outer ring manually or by means of a tool, the gap of the open outer ring increasing and the knife falls out or can be removed. If the knife is not to be replaced, the outer ring and the knife remain captively connected to one another in the disassembled state.
  • a positive connection between the open outer ring and the knife in such a way that the knife is rotatably held on the outer ring.
  • Such a positive connection is realized in such a way that on the inside of the open outer ring, at least via one Partial circumference a bead is provided which interacts with one or more grooves on the knife. If the knife is, for example, a ring knife in which the outer wing edges of the knife wings are connected to one another via an annular knife ring, then such a circumferential groove is provided on the outside of the knife ring, which groove can receive the bead on the outer ring.
  • each knife wing namely on its outer wing edge.
  • both knife designs namely the ring knife with knife ring or the knife star without knife ring, can be held in this open outer ring, since the bead of the outer ring interacts with the groove or grooves of the knife.
  • the cross section of the bead is smaller than the dimensions of the groove, ie smaller in width and smaller in height, so that the outer ring does not come into contact with the rotary movement of the knife.
  • a fixing aid can be provided, which holds the open outer ring to the precisely desired diameter.
  • This fixing aid can be a feather key which has the same diameter as the bead and is inserted between the bead ends and connected to the ends of the outer ring. The feather key is longer than the desired length of the gap between the ends of the open outer ring.
  • the feather key has two blind holes on the side facing the inside of the outer ring, which, when the feather key is inserted, are aligned with a through hole in the region of the two ends of the open ring, so that a fastening screw inserted from the outside can engage into the blind hole . Since the sides of the feather key, which are in contact with the working area of the meat grinder, are smooth, no time-consuming cleaning and no replacement of the screwing means is necessary when disassembling the cutting device in order to meet the hygiene requirements.
  • the 1 to 3 each show an embodiment of the cutting device according to the invention, the left part of each figure being a sectional view and the right part of the respective figure being a top view of the cutting device.
  • the same parts of the respective cutting devices are provided with the same reference numbers.
  • the cutting device shown can in particular be used as part of a cutting set of a meat grinder and is then driven in the direction of arrow D by the drive shaft of the meat grinder.
  • the rotatable knife 10 has a central hub 11 with a bore 12, which has the shape of an elongated hole and can thus be coupled to the drive shaft of the meat grinder in a torque-transmitting manner.
  • a four-bladed knife 10 is shown.
  • the number of knife blades 13 can, however, vary depending on the application, ie more or fewer knife blades 13 can be provided. These knife blades 13 have a cutting edge 17 pointing in the direction of rotation D.
  • These blade blades 13 are formed from solid metallic solid material and taper from the central hub 11 to the outer edge of the blade 14.
  • the cutting edge 17 comprises two cutting edges, which are inserted in a meat mincer when the cutting device is inserted rest on adjacent perforated discs.
  • the cutting edges 17 are formed in one piece with the respective knife blades 13. So there is no screw connection in the working area of the meat grinder.
  • the knife blades 13 have a width in the area of the cutting edges 17 which corresponds to the width of the outer ring 20.
  • the width of the knife 10 in the area of the cutting edges 17 can also be slightly smaller than the width of the outer ring 20, for example the cutting edges 17 can be 0.1 to 0.15 mm narrower than the outer ring 20 .
  • the knife 10 is rotatably held in the outer ring 20.
  • the knife 10 has a groove 16 on each of the outer wing edges 14.
  • This groove 16 can be seen in the figures in the upper area, the sectional view.
  • the depth and the width of the groove 16 is so large that the rotational movement in the direction of rotation D of the knife 10 is not impaired, the knife 10 runs freely without touching the bead 24 of the outer ring 20, ie also the depth and the width of the groove 16 is slightly larger than the height or width of the bead 24, which is provided on the inside of the outer ring 20.
  • This bead 24 is formed in one piece with the outer ring 20.
  • the bead 24 extends circumferentially starting from one end 21 to the other end 22 of the outer ring 20.
  • the bead ends 26 have an inward leading bevel 25. This bevel 25 facilitates the removal of the knife 10 when changing a knife.
  • the knife 10 is detachably held in the open outer ring 20 by means of a loose positive connection. This loose interlocking connection only exists so that when the cutting device is disassembled, where no knife change is provided, the knife 10 remains captively in the associated outer ring 20.
  • the open outer ring 20 is to be widened slightly so that the loose interlocking connection between the knife 10 with the grooves 16 and the outer ring 20 with the bead 24 can be released.
  • the open outer ring 20 is pulled apart at its two ends 21, 22, so that the gap 23 increases, which in the initial state has a length L.
  • This length L of the gap 23 is selected so that when the cutting device is installed, a wedge provided in the housing of the meat grinder for non-rotatably mounting the perforated disks and the outer rings can engage in the gap 23 and ensures the rotationally fixed arrangement of the outer ring 20 in the meat grinder.
  • the expansion of the outer ring 20 can be done manually or with larger and wider outer rings 20 using a tool. If the same knife 10 or another suitable knife 10 is subsequently inserted into the outer ring 20, the outer ring 20 must be brought back into its original shape, i.e. if necessary, are compressed to such an extent that the ends 21, 22 of the open outer ring 20 delimit a gap 23 with the intended length L in order to enable the cutting device to be installed in the meat grinder.
  • the Fig. 2 shows the knife 10 of Fig. 1 , but inserted into another outer ring 20.
  • the bead ends 26 of the bead 24 do not reach the gap 23.
  • a fitting groove 27 is formed.
  • a separate feather key 30 is inserted, the ends of which are convexly shaped to match the shape of the fitting grooves 27.
  • the key 30 has two blind holes 31, the openings of which each point outwards.
  • a blind hole 31 is aligned with a through hole 28 in the area of the end 21 of the outer ring 20 and the other blind hole 31 is in alignment with a through hole 28 in the area of the end 22 of the outer ring 20
  • a fastening screw 40 in particular a screw with a countersunk head, is screwed into each through hole 28 of the outer ring 20, which can be screwed into the blind hole 31 of the feather key 30.
  • the countersunk head of the fastening screw does not protrude beyond the circumference of the outer ring 20.
  • This screw connection has no contact with the working area of the meat grinder, so that after disassembly, no complex cleaning in the area of the screw connection has to be provided.
  • the feather key 30 fixes the two ends 21, 22 of the outer ring 20 at a certain distance from one another, namely at a distance which corresponds to the length L of the gap 23 in the initial state. This means that the outer ring 20 is fixed precisely to the desired outer diameter and can be easily inserted into the meat grinder together with the knife 10.
  • the outer ring 20 serves to adjust the axial distance of the knife 10 from the adjacent perforated disks and, as a pressure carrier, ensures that the knife 10 rotates as freely as possible.
  • Fig. 3 shows a further cutting device with a knife 10 and an open outer ring 20 which is integrally formed with a bead 24.
  • the knife 10 has knife wings 13 which are connected to one another at their outer wing edge 14 via a modified knife ring 15.
  • the groove 16 cooperating with the bead 24 is formed as a circumferential groove 16 in the outside of the knife ring 15.
  • This groove 16 also has such a width and depth that it is a short distance from the circumferential bead 24 on the outer ring 20.
  • the invention is not restricted to the exemplary embodiments shown. Furthermore, further modifications are possible in order to realize that the knife 10 is held in the outer ring 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Processing Of Meat And Fish (AREA)

Claims (8)

  1. Dispositif de découpe, en particulier pour un hachoir à viande, comprenant
    - un anneau extérieur (20) présentant un diamètre de sortie et un couteau (10) tournant disposé à l'intérieur de l'anneau extérieur (20),
    - sachant que le couteau (10) est maintenu de manière détachable contre l'anneau extérieur (20),
    - sachant que le couteau (10) possède un moyeu central (11) muni d'un alésage (12), moyeu permettant un appui résistant en rotation en cas de mouvement rotatif dans une direction de rotation (D), et plusieurs lames (13) de couteau disposées autour du moyeu (11) et s'étendant vers l'extérieur de ce dernier, et qui présentent des tranchants (17) bilatéraux,
    - sachant que le couteau (10) possède, contre le côté extérieur, une gorge (16) regardant dans la direction de rotation,
    - sachant que l'anneau extérieur (20) est configuré en anneau ouvert, caractérisé en ce que
    - pour la fixation détachable du couteau (10) n'est prévue, contre l'anneau extérieur (20) ouvert, aucune jonction vissée que ce soit,
    - à l'état monté le couteau (10) est maintenu au moyen d'une jonction par adhérence de formes contre l'anneau extérieur (20) tout en pouvant tourner, à savoir que l'anneau extérieur (20) possède sur son côté intérieur - au moins sur une partie de sa circonférence - un bourrelet (24) qui interagit avec la gorge (16) située contre le couteau (10), et que
    - pour changer le couteau (10) il est possible d'élargir l'anneau extérieur (20) puis de le faire revenir par flexion sur son diamètre de départ.
  2. Dispositif de découpe selon la revendication 1, caractérisé en ce que les extrémités (21, 22) de l'anneau extérieur (20) ouvert sont disposées réciproquement alignées et forment un interstice (23) de longueur (L), sachant que de préférence cette longueur (L) est adaptée à la largeur d'une cale prévue dans le carter du hachoir à viande, qui sert à la disposition résistante en rotation de l'anneau extérieur (20) et qui à l'état monté engrène dans l'interstice (23).
  3. Dispositif de découpe selon la revendication 2, caractérisé en ce qu'à l'état démonté le couteau (10) est détachable de l'anneau extérieur (20) et que pour ce faire l'interstice (23) de l'anneau extérieur (20) ouvert peut être agrandi par élargissement manuel, ou assisté par un outil, de l'anneau extérieur (20).
  4. Dispositif de découpe selon l'une des revendications 1 à 3, caractérisé en ce que le couteau (10) a la forme d'une étoile ou d'un anneau, les bords extérieurs (14) des lames (13) étant, dans le cas de cet anneau, reliés entre eux via une couronne (15) de couteau annulaire.
  5. Dispositif de découpe selon la revendication 1, caractérisé en ce que le bourrelet (24) prévu contre le côté intérieur de l'anneau extérieur (20), et les extrémités (21, 22) de l'anneau extérieur (20) ouvert, aboutissent à l'interstice (23) et possèdent un chanfrein d'extraction (25) facilitant l'enlèvement du couteau (10).
  6. Dispositif de découpe selon la revendication 5, caractérisé en ce que le bourrelet (24) prévu contre le côté intérieur de l'anneau extérieur (20) prend respectivement fin devant l'interstice (23) et que les deux extrémités (26) du bourrelet présentent respectivement une gorge de précision (27), sachant que les orifices des deux gorges de précision (27) sont dirigés l'un vers l'autre.
  7. Dispositif de découpe selon la revendication 6, caractérisé en ce qu'une clavette (30) prévue présentant la même section que le bourrelet (24) est insérée entre les deux gorges de précision (27) aux extrémités (26) du bourrelet et qu'elle est reliée avec les extrémités (21, 22) de l'anneau extérieur (20) ouvert, faisant que ces extrémités sont, pour faciliter le montage, immobilisées à une distance réciproque souhaitée correspondant à la longueur (L) de l'interstice (23).
  8. Dispositif de découpe selon la revendication 7, caractérisé en ce que la clavette (30) possède deux alésages borgnes (31) pour établir la liaison avec les deux extrémités (21, 22) de l'anneau extérieur (20) ouvert, alésages dans lesquels engrènent des vis de fixation (40) qui depuis le côté extérieur de l'anneau extérieur (20) traversent ses extrémités (21, 22) dans la zone d'un alésage traversant (28).
EP14002977.8A 2013-09-05 2014-08-28 Dispositif de découpe Active EP2845649B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202013103989U DE202013103989U1 (de) 2013-09-05 2013-09-05 Schneideinrichtung

Publications (2)

Publication Number Publication Date
EP2845649A1 EP2845649A1 (fr) 2015-03-11
EP2845649B1 true EP2845649B1 (fr) 2020-07-29

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ID=49475950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14002977.8A Active EP2845649B1 (fr) 2013-09-05 2014-08-28 Dispositif de découpe

Country Status (2)

Country Link
EP (1) EP2845649B1 (fr)
DE (1) DE202013103989U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016103109U1 (de) 2016-05-03 2017-08-07 Lumbeck & Wolter Gmbh & Co. Kg Schneideinrichtung, insbesondere für Fleischwölfe
CN109499425B (zh) * 2018-12-13 2023-08-08 中天科技光纤有限公司 一种包覆机设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431960C1 (de) 1994-09-08 1995-11-09 Inofex Gmbh Messer für Fleischwölfe
DE10011135A1 (de) * 2000-03-10 2001-09-13 Kraemer & Grebe Kg Wolf zum Zerkleinern von Fleisch
DE102010037137A1 (de) 2010-08-24 2012-03-01 Franz Vorndran Verschleißfrei oder verschleißarm Schneiden

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE202013103989U1 (de) 2013-09-25
EP2845649A1 (fr) 2015-03-11

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