EP4277751A1 - Axe porte-lames pour un hachoir, et hachoir doté d'un tel axe porte-lames - Google Patents

Axe porte-lames pour un hachoir, et hachoir doté d'un tel axe porte-lames

Info

Publication number
EP4277751A1
EP4277751A1 EP21815126.4A EP21815126A EP4277751A1 EP 4277751 A1 EP4277751 A1 EP 4277751A1 EP 21815126 A EP21815126 A EP 21815126A EP 4277751 A1 EP4277751 A1 EP 4277751A1
Authority
EP
European Patent Office
Prior art keywords
knife pin
approximately
depression
knife
pin
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.)
Pending
Application number
EP21815126.4A
Other languages
German (de)
English (en)
Inventor
Hubert P. BÜCHS
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.)
Turbocut Jopp GmbH
Original Assignee
Turbocut Jopp 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.)
Filing date
Publication date
Application filed by Turbocut Jopp GmbH filed Critical Turbocut Jopp GmbH
Publication of EP4277751A1 publication Critical patent/EP4277751A1/fr
Pending legal-status Critical Current

Links

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
    • B02C18/36—Knives or perforated discs
    • B02C18/362—Knives

Definitions

  • Knife pin for a meat grinder and meat grinder with such a knife pin Knife pin for a meat grinder and meat grinder with such a knife pin
  • the invention relates to a knife pin for a meat grinder, i.e. for a mincing machine that works according to the meat grinder principle.
  • At least one cutting set part is usually fixed in a rotationally positive manner in relation to the housing and at least one cutting set part is fixed in a rotationally fixed manner in relation to a blade pin, the blade pin being non-rotatably connected to the auger.
  • Blade set parts that are fixed relative to the housing can be referred to as standing blade set parts.
  • Cutting set parts rotating in a rotationally fixed manner with the conveyor screw and the knife pin can be referred to as rotating cutting set parts.
  • the invention also relates to meat grinders with a knife pin arranged therein and designed according to the invention.
  • a meat grinder with a knife pin that includes a support section for arranging at least one knife to be fastened to the support section in a rotationally fixed manner.
  • the support section is adjoined in the axial direction by a stop surface which protrudes radially in relation to the support section and which produces the transition to a shank designed as a dihedron.
  • the shank is used to arrange and fasten the screw conveyor.
  • a fastening ring with an external thread is provided, which interacts with an internal thread formed in the screw conveyor.
  • the object of the invention is to provide a knife pin for a meat grinder and a meat grinder with a knife pin which are improved with regard to the transmission of torque between the knife pin and cutting set parts.
  • a knife pin according to the invention for a meat grinder has a support section extending in an axial direction for attaching at least one blade set element, the support section being formed in cross section from a circular arc-shaped section or from a plurality of circular arc-shaped sections, and the at least one circular arc-shaped section having at least one interruption in the form of a Has deepening.
  • the at least one depression has a non-linear cross-sectional geometry.
  • a non-linear cross-sectional geometry is to be understood in particular as arc-shaped and angled cross-sectional contours, but not as simple flattenings as are known from a dihedron.
  • depressions whose cross-sectional geometry is formed from three or more straight sections and/or which are formed from arcuate contours, in particular arcuate contours or contours with one or more angles that do not have a radially oriented axis of symmetry.
  • the design of blade pins according to the invention has the advantage that the torque transmission can be increased and the surface pressure can be reduced.
  • one or more depressions be designed in particular in such a way that ideally aligned surfaces are provided for the torque transmission.
  • the area moment of inertia can be increased in this way, and correspondingly larger torques can be transmitted with the invention.
  • the higher load capacity of a knife pin according to the invention also results from a larger cross-sectional area that can be designed compared to solutions known from the prior art, such as a dihedron.
  • the at least one depression has an approximately radially extending surface.
  • Surfaces are considered to be an approximately radial surface if their orientation does not deviate by more than 30° from the exact radial direction.
  • the deviation is preferably less than 15°, more preferably less than 10° and particularly preferably at most 5°.
  • the approximately radially extending surface is preferably a planar surface, i.e., a non-curved surface.
  • An approximately radially extending surface is also understood to mean those surfaces which are arranged offset in parallel with respect to the purely radial direction.
  • the displacement is preferably at most 20 percent of the radius of the circular section, more preferably at most 15 percent of the radius and particularly preferably at most 10 percent of the radius
  • the at least one depression has an approximately radially running surface, preferably a purely radially running surface, no radial forces act with a purely radially running surface and only small radial forces with only slight deviations from the purely radial direction.
  • the advantage of this is that the flaring of blade hubs, which is known from the prior art, particularly in connection with a dihedron can be largely or completely avoided.
  • the above-mentioned flaring is understood to mean a load between the blade pin and the hub of a cutting set part (in particular a blade hub) that is non-rotatably coupled thereto, which, in addition to the tangential force, results in a radial force and, operationally, leads to an increasing widening of the cutting set part and thus to an increasing Allow play between knife pin and cutting set part.
  • This leads to wear on the knife pin itself, which is undesirable and can also lead to hub breakage.
  • this effect can be avoided completely or at least as far as possible, depending on the embodiment.
  • the at least one indentation is not embodied symmetrically in relation to a radius through the indentation, incorrect assembly of cutting set parts on the knife pin can be avoided by this type of design of the indentation.
  • two or more depressions are formed on the support section, which are arranged at least approximately evenly distributed over the circumference. If, for example, two indentations are separated from one another by arcuate sections of the support section of the same length, so that two oppositely arranged circular sections and two oppositely arranged indentations result. As a result, a symmetrical loading of the knife pin in the support section can be generated when loaded with a torque.
  • approximately uniform is meant that deviations of +/- 60° - preferably +/- 30° and particularly preferably +/- 15° - from an exactly uniform distribution are tolerated. Instead of two indentations, which are each provided at 180°, there are also indentations tolerated, the distance between which is only 150° in one direction and 210° in the other direction.
  • three indentations are provided and these are distributed precisely and uniformly, three circular arc-shaped sections of approximately equal length are preferably provided accordingly, each of which is provided between two adjacent indentations. The indentations are then at a distance of 120°, measured in each case from their respective center.
  • the at least one depression is formed from two edges running at an angle of between 45° and 135° to one another.
  • angled cross-sectional contours are provided, the angle between the two edges of the depression being chosen within the range mentioned above. Angles between 60° and 120° are preferred and particularly preferably between 70° and 110°. In a particularly preferred embodiment, the angle between two mutually angled edges is approximately right-angled, i.e. it is between 80° and 100°.
  • the at least one depression extends in the axial direction at least over half the length of the entire support section, so that surfaces extending in the axial direction result in the region of the depressions.
  • the at least one depression preferably extends in the axial direction over significantly more than half of the entire support section, at least over 80%, more preferably at least over 90% and particularly preferably at least over 95% of the length of the support section.
  • the at least one depression has two flat surfaces which are arranged at right angles to each other.
  • the indentations can be designed in such a way that the blade hub is not radially loaded when torque is applied.
  • a radius is preferably provided between the two flat surfaces, so that these surfaces are connected to one another via a radius. In this way, notch effects and the stress peaks associated with them can be avoided.
  • the at least one depression has an approximately radially running surface and an approximately tangentially running surface.
  • a tangential surface is meant a surface that is exactly tangent at the point where the two surfaces abut (or would abut if no radius were formed). Surfaces are considered to be approximately tangential if their orientation does not deviate by more than 30° from the exact tangential direction at at least one point on the surface. This deviation preferably applies to all points of the respective area. The deviation is preferably less than 15°, more preferably less than 10° and particularly preferably at most 5°.
  • the approximately tangential surface is preferably a planar surface, i.e., a non-curved surface. However, the approximately tangential surface can also have an arcuate, otherwise curved or any freely formed surface.
  • the approximately tangentially running surface is preferably arranged in a clockwise or counterclockwise direction in front of the approximately radial surface.
  • the stress is particularly low when the approximately tangential surface is located in front of the approximately radial surface in the direction of rotation. If all approximately tangential surfaces clockwise or are arranged anticlockwise in front of the approximately radially extending surface, a significantly higher torque can be transmitted in a main direction of rotation of the meat grinder than with comparable designs of the support section according to the prior art, although approximately the same torque can be transmitted counter to the main direction of rotation.
  • the result--even in the case of symmetrically designed indentations-- is an overall asymmetrical design that prevents the cutting set parts from twisting when they are attached.
  • one or more sub-surfaces are arranged asymmetrically or formed in an arc shape behind the radially oriented surface.
  • the circular arc-shaped section or the plurality of several circular arc-shaped sections extends in total over a circumferential angle of at least 280°.
  • the circular arc-shaped sections preferably extend in total over a circumferential angle of at least 290° and more preferably over one Circumferential angle of at least 300°.
  • the invention relates to a meat grinder with a knife pin as described above and at least one cutting set part, which has an opening designed to complement the support section of the knife pin, so that the cutting set part can be connected to the knife pin in a rotationally fixed manner by being pushed onto it.
  • FIG. 2 shows the knife pin shown in FIG. 1 in a view according to arrow II in FIG. 1,
  • FIG. 3 shows the knife pin from FIGS. 1 and 2 in an isometric representation obliquely from below
  • FIGS. 1-3 shows the knife pin shown in FIGS. 1-3 in an isometric representation obliquely from above.
  • the knife pin 10 shown in FIGS. 1-4 comprises a support section 12 which is separated from a connecting section 16 by a radially projecting collar 14 .
  • An external thread 18 is formed on the connecting section 16, which makes it possible to screw the knife pin 10 in a known manner into a screw conveyor with a complementary internal thread (not shown) and thereby establish a non-rotatable connection.
  • the invention relates to the design of the support section 12, in particular its optimized geometric design.
  • the connection section 16 which is only shown here as an example, can also have any other design in order to produce a non-rotatable connection between the screw conveyor (not shown) and the knife pin 10 .
  • the geometry of the cross section of the support section 12 can be seen clearly in FIG.
  • the cross section is formed by an upper circular portion 20, a lower circular portion 22 and a first Depression 24 and a second depression 26, which are arranged exactly opposite here.
  • the upper arcuate section 20 extends over the angle a1.
  • the lower arcuate section 22 extends over the angle a2.
  • Both angles a1 and a2 are 150° in the exemplary embodiment shown. This results in a total angle of 300° for the two circular sections.
  • the two indentations 24, 26 accordingly extend over an angle of 30° each.
  • the recess 24 has a true radial surface 28 (radial surface 28) and a true tangential surface 30 which are perpendicular to each other.
  • the tangential surface 30 anticlockwise leads the radial surface 28 .
  • the recess 26 has another true radial surface 32 (radial surface 32) and another tangential surface 34 which are also perpendicular to each other.
  • the tangentially extending surface 34 is arranged anticlockwise in front of the radial surface 32 .
  • the radial surfaces 28, 32 of the depressions 24, 26 are each significantly shorter than the approximately tangentially running surfaces 30, 34.
  • the tangentially running surfaces 30, 34 are more than twice as long here as the radial surfaces 28, 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

L'invention concerne un axe porte-lames (10) pour un hachoir, l'axe porte-lames ayant une partie de support (12) qui s'étend dans une direction axiale et sur lequel au moins un élément d'ensemble de coupe doit être placé, la partie de support (12) étant formée en section transversale d'une partie en forme d'arc de cercle ou d'une pluralité de parties en forme d'arc de cercle (20, 22), ladite partie en forme d'arc de cercle (20, 22) présentant au moins une interruption sous la forme d'une dépression (24, 26), ladite dépression (24, 26) présentant une géométrie de section transversale non linéaire.
EP21815126.4A 2021-01-14 2021-11-11 Axe porte-lames pour un hachoir, et hachoir doté d'un tel axe porte-lames Pending EP4277751A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202021100143.7U DE202021100143U1 (de) 2021-01-14 2021-01-14 Messerzapfen für einen Fleischwolf sowie Fleischwolf mit einem solchen Messerzapfen
PCT/EP2021/081437 WO2022152428A1 (fr) 2021-01-14 2021-11-11 Axe porte-lames pour un hachoir, et hachoir doté d'un tel axe porte-lames

Publications (1)

Publication Number Publication Date
EP4277751A1 true EP4277751A1 (fr) 2023-11-22

Family

ID=74644980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21815126.4A Pending EP4277751A1 (fr) 2021-01-14 2021-11-11 Axe porte-lames pour un hachoir, et hachoir doté d'un tel axe porte-lames

Country Status (3)

Country Link
EP (1) EP4277751A1 (fr)
DE (1) DE202021100143U1 (fr)
WO (1) WO2022152428A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230329484A1 (en) * 2022-04-13 2023-10-19 LEM Products Holdings, LLC Dual grind adapter kit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH408688A (de) * 1963-12-10 1966-02-28 Carl Schnell Maschinenfabrik Zerkleinerungsmaschine für landwirtschaftliche Erzeugnisse, insbesondere Fleisch
DE29512820U1 (de) * 1995-08-09 1995-10-12 Tetra Laval Convenience Food GmbH & Co. KG, 35216 Biedenkopf Zerkleinerungsmaschine
US7744025B2 (en) * 2005-10-20 2010-06-29 Weiler And Company, Inc. Secondary grinding section for an orifice plate of a grinding machine
DE202020105051U1 (de) 2020-09-02 2020-09-08 Lumbeck & Wolter GmbH. & Co. KG. Fleischwolf

Also Published As

Publication number Publication date
DE202021100143U1 (de) 2021-02-03
WO2022152428A1 (fr) 2022-07-21

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