EP0925835B1 - Broyeur multi-couteaux pour l'industrie alimentaire - Google Patents

Broyeur multi-couteaux pour l'industrie alimentaire Download PDF

Info

Publication number
EP0925835B1
EP0925835B1 EP19980450021 EP98450021A EP0925835B1 EP 0925835 B1 EP0925835 B1 EP 0925835B1 EP 19980450021 EP19980450021 EP 19980450021 EP 98450021 A EP98450021 A EP 98450021A EP 0925835 B1 EP0925835 B1 EP 0925835B1
Authority
EP
European Patent Office
Prior art keywords
knife
edge
counter
grille
mincer
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.)
Expired - Lifetime
Application number
EP19980450021
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0925835A1 (fr
Inventor
Serge Couret
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.)
Cozzini OTM
Original Assignee
Cozzini OTM
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.)
Filing date
Publication date
Application filed by Cozzini OTM filed Critical Cozzini OTM
Publication of EP0925835A1 publication Critical patent/EP0925835A1/fr
Application granted granted Critical
Publication of EP0925835B1 publication Critical patent/EP0925835B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B02C18/36—Knives or perforated discs
    • B02C18/365—Perforated discs
    • 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 present invention relates to a multi-knife mill for the food industry.
  • Grinders used in the food industry are generally placed in production lines for reconstituted products. They allow in particular to grind different products which will be introduced later in agri-food preparations.
  • They generally consist of a feed hopper, a sheath in which turns a coaxial worm.
  • the downstream end of the sheath is obstructed by a grid, the diameter of the through holes of which determines the fine grinding, and the end of the worm is equipped with a knife which allows you to cut the product before it passes through the grid.
  • This knife made in one piece usually includes several radially arranged branches which are machined to form blades sharp.
  • one solution consists in having a pair of knives for each grinder. So as soon as the knife in place does cut more, it is replaced by the second. But this solution, even if it limits downtime, does not slow down the wear of knives which will have to be changed inevitably. This rapid wear of knives that have a relatively high cost price, greatly increases maintenance costs grinders.
  • the present invention aims to overcome these drawbacks by proposing a grinder which includes a counter-grid whose shapes facilitate the action of grinding, and knives, removably or permanently arranged on a knife holder, the geometric shapes and arrangements of which allow to slow down their wear.
  • This shredder reduces maintenance costs and increase the throughput of crushed products, in particular by improving the resistance of the thread over time.
  • the present invention relates to a multi-knife mill, especially used in the food industry, provided with means material supply, comprising in the direction of flow of material, a counter-grid provided with at least one orifice, a knife holder provided at least one knife, and a grid, characterized in that the knife includes at least one edge of wavy shape.
  • each knife comprises two cutting edges, one first adjacent to the grid and a second adjacent to the counter grid, which have a wavy shape whose radius at a considered point of the edge is proportional to the distance separating the point considered from the axis of rotation of the knife.
  • the knife comprises a cutting face which has a rectilinear shape in the transverse direction.
  • the knife comprises a face of cup provided with fragmentation means produced by a double shape curved in the transverse direction, the first being attached to the first edge and the second to the second edge.
  • the assembly constituted by the counter-grid and the knife holder includes means for shifting the cutting attack of each knife.
  • each knife has an alternating toothing profile from one knife to another.
  • the knives are removably attached to the knife.
  • the peripheral surface of the orifices of the against grid comprises at least one substantially projecting edge perpendicular to the surface of the counter grid.
  • FIG. 1 there is shown a cross section of a grinder 10 which comprises in a known manner a feed hopper 12, a sheath 14, and a worm 16 driven by a motor 18 at its first end and provided with a shaft 20 at its second end.
  • the downstream end of the sleeve 14 is obstructed by a grid 22 which includes through holes 24, the diameter determines the fineness of grinding, and a bore 26 coaxial with the axis 27 scabbard.
  • a counter-grid 28 which includes a bore 32 coaxial and of diameter slightly greater than the shaft 20, takes support against a shoulder 34 of the bore of said sleeve 14. It is immobilized in rotation, like the grid 22, by stop means 36 in rotation, for example a notch 37 on its periphery (visible in Figure 2) in which is housed a lug secured to the sheath 14.
  • the knife holder 30 is rotated by the worm 16 thanks to drive means 38, and includes guide means, produced by a bearing 40 which is housed in the bore 26 of the grid, and by a bore 42 coaxial and of diameter slightly greater than the shaft 20 of the screw unending.
  • These training means 38 are made thanks to the forms conjugates of the end of the worm 16 which comprises two flats, and of the bore 42 of the knife holder 30 visible in FIG. 2.
  • a nut 43, screwed to the end of the sleeve 14, makes it possible to immobilize in translation from upstream to downstream, the counter-grid 28, the knife holder 30 and grid 22.
  • the counter-grid 28, cylindrical in shape includes an even number of orifices, arranged symmetrically on its surface, for example six holes referenced by 44 to 49, uniformly distributed, the scalloped edges of which protrude pre-cut products.
  • the peripheral edge of the orifices 44 to 49 includes edges 50 in protruding over the entire thickness, substantially parallel to the axis 27 of the sheath, which facilitate pre-cutting.
  • the counter-grid 28 is made of hardened steel, and undergoes surface treatment, for example nitriding, in order to give it high mechanical characteristics.
  • It includes five branches 51, 53, 55, 57, 59 which are arranged radially, on which knives 52, 54 are removably attached, 56, 58, 60.
  • the knife holder 30 and the knives 52, 54, 56, 58, 60 can be made in one piece, said knives having the same features as removable knives.
  • These knives 52, 54, 56, 58, 60 have profiles 66 of suitable teeth different types of products, which allow better grinding with a high flow and slow wear.
  • the whole constituted by the counter-grid 28 and the knife holder 30, comprises means 67 for shifting the cutting edge of the knives, and the profile 66 is shifted from one branch to another.
  • the offset means 67 can be made by taking a number of branches of the knife holder 30 different from the number of orifices of the counter-grid 28, and / or having an angular distance formed between two consecutive knives and / or two consecutive orifices of the different counter grid.
  • profiles 66 which have a substantially wavy shape which reduces cutting forces, varies depending in particular on the hardness of the product to be ground.
  • Each knife of substantially parallelepiped shape, comprises a bearing face 68 pressed against the branch, a cutting face 70, a first cutting edge 72 adjacent to the grid 22 and a second edge cutting edge 74 adjacent to the counter-grid 28. These edges are associated respectively to a first face 76 of main draft oriented towards the grid 22, with a second face 78 of main draft oriented towards the grid 28 and a side 80 of secondary draft facing outwards, common to both edges.
  • Each cutting edge has an undulating shape whose radius of curvature at a point considered is proportional to the distance separating said point from the axis 27 of rotation of the knife holder (shown in phantom).
  • the radius of curvature R 2 is less than R 1 , R 2 being closer to the axis 27 of rotation than R 1 .
  • the first and second edges have the same shape corrugated.
  • the plane Pr is the plane parallel to the support face 68 passing through A
  • the plane Ps is the plane perpendicular to Pr passing through point A
  • the plane Pf is the plane perpendicular to Pr and Ps in this case.
  • the cutting angle ⁇ 1 is the angle separating the reference plane Pr and the cutting face 70
  • the cutting angle ⁇ 1 is the angle separating the cutting face 70 and the first face 76 of main draft
  • the main draft angle ⁇ 1 is the angle separating the first face 76 of main draft and the edge plane Ps
  • the angle of inclination of edge ⁇ 1 is the angle separating the mean direction of the edge 72 and the plane Pr
  • the secondary draft angle ⁇ ' 1 is the angle separating the face 80 of secondary draft and a plane parallel to the working plane Pf.
  • the angles are defined in the same way, the index 1 of the angles being replaced by the index 2, with ⁇ 2 equal to ⁇ 1 , and ⁇ ' 2 equal to ⁇ ' 1 .
  • the cutting face 70 is generated by the assembly straight lines located in a plane Pf, which connect the first edge 72 and the second edge 74.
  • the main draft angle ⁇ 1 is between 1 ° ° and 8 ° and is preferably 3 °
  • the cutting angle ⁇ 1 is between 0 ° and 35 °
  • l 'edge tilt angle ⁇ 1 is approximately 2 °
  • the secondary draft angle ⁇ ' 1 is approximately 5 °.
  • angles ⁇ 2 , ⁇ 2 , ⁇ 2 , ⁇ 2 and ⁇ ' 2 have values which are substantially identical to ⁇ 1 , ⁇ 1 , ⁇ 1 , ⁇ 1 and ⁇ ' 1 .
  • FIG. 4A Another knife profile, used for soft materials, is shown in Figures 4A and 4B.
  • the cutting face 70 is not generated by straight lines as before. It is generated by a first set of curves 84 which pass through a point A located on the first edge 72 and by a point C describing a curve, similar and parallel to the first edge 72, located approximately in the middle of the cutting face 70 , and by a second set of curves 86 which pass through a point B located on the second edge 74 and through point C. Curves 84 and 86 are characterized by their radius of curvature and by the distance e separating point C from the right (AB).
  • This curved shape of the cutting face 70 constitutes means 88 of fragmentation, and allows in the case of soft materials to fragment to reduce friction and therefore wear.
  • the distance e is inversely proportional to the hardness of the ground material, its value increasing for soft materials.
  • the other characteristic angles of this knife profile have values identical to the characteristic angles of the knife profile illustrated by Figures 3A and 3B.
  • these knives are made of hardened steel, and undergo a surface treatment, for example nitriding, in order to give them high mechanical properties.
  • the mill of the invention is obviously not limited to the modes of realization represented and described above but covers all variants in particular with regard to the number and the shapes of the orifices 44 of the counter-grid 26, the number of branches and the shapes of the knife holder 28, as well as the shapes of the knives, the counter-grid 26 and the knife holder 28 can be adapted to all grinder sizes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP19980450021 1997-12-23 1998-12-23 Broyeur multi-couteaux pour l'industrie alimentaire Expired - Lifetime EP0925835B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9716642A FR2772643B1 (fr) 1997-12-23 1997-12-23 Broyeur multi-couteaux pour l'industrie alimentaire
FR9716642 1997-12-23

Publications (2)

Publication Number Publication Date
EP0925835A1 EP0925835A1 (fr) 1999-06-30
EP0925835B1 true EP0925835B1 (fr) 2003-04-23

Family

ID=9515247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980450021 Expired - Lifetime EP0925835B1 (fr) 1997-12-23 1998-12-23 Broyeur multi-couteaux pour l'industrie alimentaire

Country Status (5)

Country Link
EP (1) EP0925835B1 (da)
DE (1) DE69813745T2 (da)
DK (1) DK0925835T3 (da)
ES (1) ES2198038T3 (da)
FR (1) FR2772643B1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009017439U1 (de) * 2009-12-23 2010-03-18 Haack, Eberhard, Dr.-Ing. Vorschneider- und Lochscheibensystem für Zerkleinerungsmaschinen, insbesondere Fleischwölfe o.dgl.
CN103447133A (zh) * 2013-08-09 2013-12-18 浙江中科兴环能设备有限公司 破碎机破碎刀

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE582310C (de) * 1933-08-12 Otto Straeten Fleischwolf
US1906609A (en) * 1928-09-04 1933-05-02 Eugen Esslen Meat chopper
GB406734A (en) * 1932-09-02 1934-03-02 William Henry Vickers Improvements in or relating to rotary cutting devices, such as those of mincing machines
US2183114A (en) * 1938-10-29 1939-12-12 Bonapace Pietro Meat chopper
NL6713453A (da) * 1966-10-29 1968-05-01
DE2451389A1 (de) * 1974-10-29 1976-05-06 Muntana Eudaldo Molist Fleischwolf

Also Published As

Publication number Publication date
DK0925835T3 (da) 2003-08-11
ES2198038T3 (es) 2004-01-16
DE69813745T2 (de) 2004-03-18
DE69813745D1 (de) 2003-05-28
EP0925835A1 (fr) 1999-06-30
FR2772643A1 (fr) 1999-06-25
FR2772643B1 (fr) 2000-02-25

Similar Documents

Publication Publication Date Title
CH632179A5 (fr) Dispositif a plaque d'usure d'un couteau mecanique portatif.
FR2502511A1 (fr) Dispositif de dechiquetage de materiaux de dechet, par exemple de blocs de papier
EP0925835B1 (fr) Broyeur multi-couteaux pour l'industrie alimentaire
EP0620043A2 (fr) Appareil pour fragmenter des objets solides
EP0069721A2 (fr) Broyeur de déchets à taille hélicoidale
EP1875076B1 (fr) Machine rotative volumétrique avec rotors à profils asymétriques
FR2508345A1 (da)
FR2625935A1 (fr) Dispositif pour affiler des couteaux
FR2954672A1 (fr) Dispositif broyeur de vegetaux
FR2652281A1 (fr) Broyeur-dechiqueteur a dechets.
FR2795661A1 (fr) Broyeur, notamment destine a la reduction de vegetaux ou autres materiaux
FR2635704A1 (fr) Outil pour le detourage des verres de lunettes en polycarbonate sur une meuleuse classique
FR2479023A1 (fr) Hache-viande
FR3061830B1 (fr) Outil de coupe en metal de type couteau ou marteau mobile en rotation pour le broyage ou le fauchage de vegetaux
EP1072314A1 (fr) Forme de la partie active d'un couteau pour broyeur à couteaux
FR2733928A1 (fr) Fraise comportant au moins une dent, notamment pour l'usinage de lentilles ophtalmiques
FR2479024A1 (da)
EP1295640B1 (fr) Dispositif de couteau pour broyeur utilisé dans le domaine de l'alimentaire
BE1007890A3 (fr) Elements de blindage pour broyeur rotatif et broyeur equipe de tels elements.
FR2737137A1 (fr) Dispositif pour le dechiquetage d'objets et de dechets industriels tels que des cartons en vue de reduire leur volume
EP3164240B1 (fr) Dispositif de cisaillement
EP1792658B1 (fr) Dispositif de couteau pour broyeur alimentaire, et plus particulièrement pour le decoupage de la viande
FR2681807A1 (fr) Dispositif d'emincage de champignons.
WO2001078852A1 (fr) Affuteur manuel de carres a partie abrasive mobile
FR2474891A1 (fr) Dispositif servant a broyer des materiaux

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE DK ES FI GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991208

AKX Designation fees paid

Free format text: DE DK ES FI GB IT

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COZZINI OTM

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE DK ES FI GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030423

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 69813745

Country of ref document: DE

Date of ref document: 20030528

Kind code of ref document: P

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2198038

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20141226

Year of fee payment: 17

Ref country code: DK

Payment date: 20141230

Year of fee payment: 17

Ref country code: GB

Payment date: 20141229

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20141227

Year of fee payment: 17

Ref country code: DE

Payment date: 20141230

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69813745

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20151231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20151223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151223

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151223

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20170127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151224