EP1582318B1 - Couteau pour une machine motorisée pour la coupe - Google Patents

Couteau pour une machine motorisée pour la coupe Download PDF

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Publication number
EP1582318B1
EP1582318B1 EP05005663A EP05005663A EP1582318B1 EP 1582318 B1 EP1582318 B1 EP 1582318B1 EP 05005663 A EP05005663 A EP 05005663A EP 05005663 A EP05005663 A EP 05005663A EP 1582318 B1 EP1582318 B1 EP 1582318B1
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EP
European Patent Office
Prior art keywords
knife
cutting
wedge angle
cutting edge
stick region
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
EP05005663A
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German (de)
English (en)
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EP1582318A1 (fr
Inventor
Uwe Dipl.-Ing. Reifenhäuser
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Individual
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Individual
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Publication date
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Publication of EP1582318A1 publication Critical patent/EP1582318A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

  • the invention relates to a knife for a motor-driven cutting machine for cutting food, in particular sausages, cheese, vegetables and the like, with a rear side facing the loaf of the food during operation of the cutting machine and with a front side facing away from the loaf with at least one clamping area the knife is connectable with a drive member of the cutting machine, as well as with a cutting edge which extends in a substantially parallel to the back and front cutting plane and at which the back and the front converge at an acute wedge angle, with an adjacent to the cutting edge and substantially parallel to this limited smoothly polished wedge angle surface having a surface roughness depth of between 1 and 10 ⁇ m and a knife view surface disposed on a side of the wedge angle surface facing away from the cutting edge.
  • a knife is known, for example, from US-5,988,033.
  • surface roughness depth is understood to mean the proportion of a measured distance between the top of a survey and the valley of a nearby depression in the surface, which is perpendicular to a reference surface determined by averaging over the surface.
  • the surface roughness depth is referred to as a statistical mean value of this length value.
  • Knives of the type described above are well known in a variety of designs for a long time.
  • the wedge angle for high performance slicers, for industrial use is about 20 ° to 25 °
  • the width of the wedge angle surface is between 0.1 and 5 mm, usually between 0.2 and 3 mm. This surface is typically smoothed and sized.
  • the wedge angle surface is adjoined by a concavely curved region, which extends in the transition to the wedge angle surface approximately parallel to the cutting plane, so that Due to the removal of material during regrinding of the knife, the surface to be ground is not or only slightly increased.
  • the transition between the wedge-angled surface and the concavely curved region forms a so-called "spoiler edge" at which the slice cut by the cutting edge is to be released from the surface of the knife.
  • spoke edge at which the slice cut by the cutting edge is to be released from the surface of the knife.
  • the cut slices are thus not stored clean, but uncontrollably moved by excessive friction and consequent excessive momentum transfer to the discs.
  • the material to be cut is pulled together by the moving blade surface, which is considered particularly in packaged SB foods as quality degradation.
  • the invention has for its object to propose a knife for a motor-driven cutting machine, which avoids the adhesion of cut from the loaf food slices.
  • a non-stick area is proposed according to the invention, which adjoins directly to the wedge angle surface and forms part of the Messeransichts simulation, the non-stick area having a surface roughness between 50 and 600 .mu.m , preferably between 200 and 400 .mu.m .
  • the non-stick area is limited substantially parallel to the cutting edge, and the knife-viewing area has a surface roughness depth which is significantly lower than that in the non-stick area.
  • Any limitation on the size of the non-stick area makes it possible, since its manufacture is costly, to produce the knife according to the invention at lower cost.
  • the desired detachment of the material to be cut from the knife is already reliably achieved by a narrow - with a width of a few millimeters to about a few centimeters - strip-shaped parallel to the cutting edge formed non-stick area.
  • the processing of the adjacent knife viewing surface can then be kept much less expensive.
  • the said surface roughness corresponds in particular to the initial state of an unprocessed blank produced from sheet material.
  • a non-stick area is formed on a knife according to the invention only on the front side facing away from the loaf of the food. Also by this measure, the manufacturing cost of the knife according to the invention are kept as low as possible.
  • adhesions of the uncut loaf to the rear of the knife are less critical, as they do not directly affect the optical quality of the cut (with the above-mentioned criteria of filing and cutting quality).
  • the uncut loaf also sticks to the cut slice significantly higher strength only for a short time and is not significantly deformed by the adhesion.
  • the adhesion of the loaf at the back of the knife can be effectively avoided by other, cheaper measures - such as by an undercut training the knife on the back (hollow grinding).
  • the inclination of the wedge angle surface with respect to the cutting plane is greater on a knife according to the invention than the inclination of the non-stick region relative to the cutting plane.
  • the boundary between the wedge angle surface and the non-stick region is advantageously marked by a tear-off edge in a surface contour of the knife.
  • the non-stick region of a knife according to the invention has an engraved or embossed structure.
  • a variety of known, mature and inexpensive methods are available for the machining or forming of such a structure.
  • the structure in the non-stick region of such a knife according to the invention preferably consists of essentially parallel lines.
  • Such a regular structure can be produced particularly easily both by machining and by forming.
  • the lines should be approximately perpendicular to the cutting edge or to the boundary between the wedge angle surface and the non-stick area.
  • the lines may also be inclined in the cutting direction to the cutting edge, so that the lines pass approximately perpendicular to the feed direction of the cutting material.
  • the lines then form a series of successive "tear-off edges", which in turn can improve the detachment of the material to be cut.
  • These lines which characterize the non-stick area of such a knife according to the invention preferably each have a length of between 5 and 15 mm and extend parallel to one another at a distance of between 0.2 and 2 mm. Such structuring has been found to be particularly effective.
  • the structure in the non-stick area of such a knife according to the invention is advantageously introduced by means of laser processing.
  • laser processing also offers the possibility of providing hardened knife steels with the described structuring.
  • surface structures with parameters that are largely constant even in the microscopic range can be produced by means of laser processing and in a quite economical manner.
  • the non-stick area is preferably arranged in a concave area of the surface of the knife, the distance between the cutting edge and the boundary between wedge angle area and non-stick area is between 0.1 and 5 mm, preferably between 0.2 and 3 mm.
  • a knife according to the invention may have a cutting edge which is curved in the cutting plane, such a knife being able to be rotated in rotation about an axis of rotation perpendicular to the cutting plane during operation of the cutting machine.
  • Such knives are used in particular in industrial cutting machines for high cutting speeds, so-called "slicers".
  • a knife according to the invention may also have a straight cutting edge, the knife being clamped at opposite ends and translationally movable in the cutting plane during operation of the cutting machine.
  • Such knives are used, for example, in bread slicing machines, in particular with knife gates, and in so-called roll dividers for the retail trade.
  • the knife according to the invention can be produced very economically that the surface in the non-stick area of the material of the knife body, that is made of metal, is formed.
  • the possibility of dispensing with any type of coating saves costs and leads to a long shelf life because a wear or detachment of a coating can not occur.
  • the knife 1 according to the invention shown in the figures is suitable for operation in a motor-driven cutting machine not shown - a so-called "slicer” - for cutting not shown, in particular loafed foods such as sausages and cheese, but also of lumpy vegetables such as cucumbers or cabbage and provided.
  • the knife 1 is in a central standardized clamping area 2 with a drive member of the cutting machine, not shown, in particular a shaft journal, connected and rotatable with this about its axis of rotation 3. Due to the spirally coiled cutting edge 4 of the knife 1, this has, following the transition from the largest radius 5 to the smallest radius 6 an approximately triangular gap 7, which allows for each revolution of the knife further feeding of the food to the desired slice thickness, without an additional feed movement in the cutting plane 8 would be required.
  • the rear side 9 of the knife 1 (not shown in FIGS. 1 and 2) is intended for the loaf to be sliced or the lumpy vegetables, the front side 10 for the cut slices.
  • the back 9 has for the purpose of reducing material and to improve the cutting quality on a concave undercut 11 in the form of a hollow grinding.
  • the knife 1 On the front 10, the knife 1 has a smooth ground wedge angle surface 12 with a - projected to the cutting plane 8 - width 13 of about 0.5 mm, which includes a wedge angle 14 of 23 ° with the back 9.
  • the wedge angle surface 12 is adjoined by a concave region 15 with (again projected) width 16 of approximately 40 mm and a region 17 parallel to the cutting plane 8.
  • a tear-off edge 18 running parallel to the cutting edge 4 is formed.
  • the central knife-facing surface 22 on the front surface 10 adds to the wedge-angle surface 12 to the total area of the front surface 10.
  • the surface of the parallel region 17 and the surface of the concave region 15 together form the knife-facing surface 22.
  • the non-stick region 19 forms part of the concave region 15, namely the wedge angle surface 12 facing.
  • the knife 1 Immediately following the tear-off edge 18, already in the concave area 15, the knife 1 has an anti-adhesion area 19 with a structure engraved by laser processing.
  • the engraved structure consists of lines 20 which extend parallel to one another and are substantially perpendicular to the tear-off edge 18.
  • the lines 20 have a length 21 of 10 mm which is essentially constant over the entire length of the tear-off edge 18, a distance of approximately 1.5 mm , a width of 0.3 mm and a depth of 0.3 mm. Distance, width and depth of the lines 20 are not dimensioned in the figures.
  • the lines 20 are introduced by means of laser processing.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Food-Manufacturing Devices (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (17)

  1. Couteau (1) pour une machine à découper à moteur destinée à découper des produits alimentaires, en particulier des charcuteries, des fromages, des légumes et similaires, avec une face arrière (9) tournée vers un bloc de produit alimentaire pendant le fonctionnement de la machine à découper et une face avant (10) tournée à l'opposée du bloc, avec au moins une zone de serrage (2) dans laquelle le couteau (1) peut être relié à un organe d'entraînement de la machine à découper et avec un bord coupant (4) qui se trouve dans un plan de coupe (8) sensiblement parallèle à la face arrière (9) et à la face avant (10) et au niveau duquel la face arrière (9) et la face avant (10) se rejoignent en formant un angle de taillant aigu (14), avec une surface d'angle de taillant (12) lissée par meulage, contiguë au bord coupant (4) et délimitée de façon sensiblement parallèle à celui-ci, ayant une rugosité de surface de 1 à 10 µm, et avec une surface visible du couteau située sur la face avant (10), disposée d'un côté de la surface d'angle de taillant (12) opposé au bord coupant (4), caractérisé en ce qu'il comporte une zone antiadhésive (19) immédiatement limitrophe de la surface d'angle de taillant (12) et formant une partie de la zone visible du couteau, dont la rugosité de surface est comprise entre 50 et 600 µm, de préférence entre 200 et 400 µm.
  2. Couteau (1) selon la revendication précédente, caractérisé en ce que la zone anti-adhésive (19) est délimitée de façon sensiblement parallèle au bord coupant (4) et en ce que la surface visible du couteau a une plus faible rugosité de surface que la zone anti-adhésive.
  3. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il n'y a une zone anti-adhésive (19) que sur la face avant (10) tournée à l'opposé du bloc de produit alimentaire.
  4. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'inclinaison de la surface d'angle de taillant (12) par rapport au plan de coupe (8) est plus grande que l'inclinaison de la zone anti-adhésive (19) par rapport au plan de coupe (8).
  5. Couteau (1) selon la revendication précédente, caractérisé en ce que la limite entre la surface d'angle de taillant (12) et la zone anti-adhésive (19) est marquée par un bord de séparation (18) dans le contour de surface du couteau (1).
  6. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone anti-adhésive (19) présente une structure gravée ou estampée.
  7. Couteau (1) selon la revendication précédente, caractérisé en ce que la structure est formée par des lignes (20) sensiblement parallèles.
  8. Couteau (1) selon la revendication précédente, caractérisé en ce que les lignes (20) sont à peu près perpendiculaires au bord coupant (4).
  9. Couteau (1) selon l'une des deux revendications précédentes, caractérisé en ce que les lignes (20) sont à peu près perpendiculaires à la limite entre la surface d'angle de taillant (12) et la zone anti-adhésive (19).
  10. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les lignes (20) ont chacune une longueur (21) comprise entre 5 et 15 mm.
  11. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les lignes (20) sont espacées parallèlement les unes des autres de 0,2 à 2 mm.
  12. Couteau (1) selon l'une quelconque des revendications 6 à 11, caractérisé en ce que la structure est créée par usinage au laser.
  13. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone anti-adhésive (19) est disposée dans une zone concave (15).
  14. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la distance entre le bord coupant (4) et la limite entre la surface d'angle de taillant (12) et la zone anti-adhésive (19) est comprise entre 0,1 et 5 mm, de préférence entre 0,2 et 3 mm.
  15. Couteau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le bord coupant (4) est courbe dans le plan de coupe (8) et en ce que le couteau (1) peut être entraîné en rotation autour d'un axe de rotation perpendiculaire au plan de coupe (8) pendant le fonctionnement de la machine à découper.
  16. Couteau (1) selon l'une quelconque des revendications 1 à 14, caractérisé en ce que le bord coupant est rectiligne et en ce que le couteau est serré à des extrémités opposées et peut être entraîné en translation dans le plan de coupe pendant le fonctionnement de la machine.
  17. Couteau (1) selon l'une quelconque des revendications 1 bis 16, caractérisé en ce que la surface de la zone anti-adhésive (19) est formée par le matériau du corps du couteau.
EP05005663A 2004-04-03 2005-03-16 Couteau pour une machine motorisée pour la coupe Active EP1582318B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004016615 2004-04-03
DE102004016615A DE102004016615A1 (de) 2004-04-03 2004-04-03 Messer für eine motorgetriebene Schneidmaschine

Publications (2)

Publication Number Publication Date
EP1582318A1 EP1582318A1 (fr) 2005-10-05
EP1582318B1 true EP1582318B1 (fr) 2006-08-16

Family

ID=34877731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05005663A Active EP1582318B1 (fr) 2004-04-03 2005-03-16 Couteau pour une machine motorisée pour la coupe

Country Status (5)

Country Link
EP (1) EP1582318B1 (fr)
AT (1) ATE336339T1 (fr)
DE (2) DE102004016615A1 (fr)
ES (1) ES2270396T3 (fr)
HK (1) HK1085966A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018111762A1 (de) * 2018-05-16 2019-11-21 Weber Maschinenbau Gmbh Breidenbach Verfahren zum Beschichten von Schneidmessern
US10807266B2 (en) 2014-05-07 2020-10-20 Multivac Sepp Haggenmüller Se & Co. Kg Slicer feed unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013101903U1 (de) * 2013-05-02 2013-05-17 Inauen Group Ag Schneidmesser
DE102019114846A1 (de) * 2019-06-03 2020-12-03 Multivac Sepp Haggenmüller Se & Co. Kg Messer, insbesondere für Slicer
DE102019134530A1 (de) 2019-12-16 2021-06-17 Tvi Entwicklung Und Produktion Gmbh Messer, damit ausgestattete Aufschneide-Maschine sowie Verfahren zum Betrieb der Aufschneide-Maschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911818A1 (de) * 1979-03-26 1980-10-09 Horst Groneweg Messer fuer brotschneidemaschinen
JPH07106747B2 (ja) * 1990-05-11 1995-11-15 東京シリコーン株式会社 接着剤収納容器、カッター、焼菓子用スチールベルト、移送パイプ、タイヤ製造用の治具、タイヤ製造用機械設備の部品、防汚体、未加硫ゴムの付着防止方法および粘着物の付着防止方法
DE4114964A1 (de) * 1990-05-11 1991-12-12 Tokyo Silicone Co Gebilde und verfahren zum verhindern der adhaesion einer adhaesiven substanz sowie verfahren zum verhindern der adhaesion von nichtvulkanisiertem kautschuk
US5988033A (en) * 1992-10-29 1999-11-23 Kraft Foods, Inc. Food slicing apparatus, blade and method
DE19612055A1 (de) * 1996-03-27 1997-10-02 Wabaema Gmbh Sichelmesser
DE29710489U1 (de) * 1997-06-17 1998-10-15 P.D. Rasspe Söhne GmbH & Co KG, 42651 Solingen Rundmesser
DE29717580U1 (de) * 1997-10-02 1999-02-25 Rasspe International GmbH & Co. KG, 42651 Solingen Rundmesser
BR0110884A (pt) * 2000-05-19 2003-06-10 Pirelli Aparelho para o corte automático de um elemento feito de material elastomérico

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10807266B2 (en) 2014-05-07 2020-10-20 Multivac Sepp Haggenmüller Se & Co. Kg Slicer feed unit
DE102018111762A1 (de) * 2018-05-16 2019-11-21 Weber Maschinenbau Gmbh Breidenbach Verfahren zum Beschichten von Schneidmessern

Also Published As

Publication number Publication date
EP1582318A1 (fr) 2005-10-05
ATE336339T1 (de) 2006-09-15
HK1085966A1 (en) 2006-09-08
ES2270396T3 (es) 2007-04-01
DE502005000058D1 (de) 2006-09-28
DE102004016615A1 (de) 2005-10-27

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