EP2062646A2 - Couteau de découpe et tête porte-lame en étant pourvue - Google Patents

Couteau de découpe et tête porte-lame en étant pourvue Download PDF

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Publication number
EP2062646A2
EP2062646A2 EP08012413A EP08012413A EP2062646A2 EP 2062646 A2 EP2062646 A2 EP 2062646A2 EP 08012413 A EP08012413 A EP 08012413A EP 08012413 A EP08012413 A EP 08012413A EP 2062646 A2 EP2062646 A2 EP 2062646A2
Authority
EP
European Patent Office
Prior art keywords
blade
cutter
cutter knife
knife
thickness
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.)
Withdrawn
Application number
EP08012413A
Other languages
German (de)
English (en)
Other versions
EP2062646A3 (fr
Inventor
Michael Steffens
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.)
GW STEFFENS GMBH
Original Assignee
G Walter Steffens & 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.)
Filing date
Publication date
Priority claimed from DE102007056124A external-priority patent/DE102007056124A1/de
Priority claimed from DE102008012666A external-priority patent/DE102008012666A1/de
Application filed by G Walter Steffens & Co KG GmbH filed Critical G Walter Steffens & Co KG GmbH
Publication of EP2062646A2 publication Critical patent/EP2062646A2/fr
Publication of EP2062646A3 publication Critical patent/EP2062646A3/fr
Withdrawn legal-status Critical Current

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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
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/20—Sickle-shaped knives

Definitions

  • the invention first relates to a cutter knife of certain types and in addition to a cutter head comprising at least one of these cutter knives.
  • Cutter knives are used for crushing and blending meat, sausage meat or sausage or the like foods, hereinafter referred to as mass, in a device, a so-called cutter, and are previously known in particular in the meat processing industry in various forms and designs.
  • a so-called cutter Usually several cutter knives are mounted axially next to each other and / or in the same plane over the circumference on a drive shaft for forming a so-called cutter head, cf. patent specification DE 37 32 237 CI the applicant.
  • the cutter knives mainly have the task to crush the mass contained in the cutter to a certain desired level and to mix. This machining process should be as fast as possible, but energy-saving, and carried out thoroughly, but without overheating the mass too much.
  • the cutter knives must withstand considerable shear and bending forces during the working of the mass. Because a break during operation not only leads to a further downtime. In addition to the renewal of the knife are often damage with great effort to fix, which has caused the broken cutter blade on the cutter itself. Finally, a break, because of the risk of splintering, also leads to the uselessness of the entire mass in the cutter.
  • Cutter knives and a cutter head provided with them are already known in many designs.
  • the blade tapering to the tip is formed so that on one narrow side as the actual cutting a front chamfer is arranged, while on the other, opposite and trailing narrow side, also called back, also a chamfer or undercut is arranged.
  • the blade and thus the cutting edge in use is subject to progressive wear.
  • the cutting edge eventually becomes so dull that it can no longer adequately fulfill your task. It must be reground.
  • the wear is much greater at the tip of the blade than the blade's axis of rotation.
  • the spatial shape of the cutting edge ie in particular the arc shape and angle of the bevel, is optimized for each application. If this optimized shape to be restored after excessive wear, the bevel must be reground not only at and near the top, but over the entire length of the cutting edge. Such regrinding thus requires a considerable material removal and is therefore very laborious.
  • the individual juxtaposed cutter knives can take on different tasks:
  • the axially outer cutter blades can also feed the mass to the inside cutter knives.
  • the cutter knives facing the mass facing cutter knives serve as a kind of conveyor, the other cutter knife, however, as a so-called jaw blades. How many and which of these cutter knives are put together in the cutter head depends on the consistency, d. H. Hardness and toughness, the particular mass to be processed. Therefore, the cutter blades of a cutter head can also be designed geometrically different.
  • the invention is based on the endeavor to show a geometric shape that improves the economy of the cutter blade by providing an optimum of fracture resistance and / or a very fast and low-cost recovery of the optimal shape of the cutting edge allows.
  • the invention proposes a training according to the characterizing part of claim 1 and / or claim 6.
  • the invention thus consists in a cutter knife which is rotatably mounted with an at least part-circular planar mounting portion about an axis which comprises a crescent-shaped blade having an outer, arcuate cutting edge and an inner, arcuate undercut and whose thickness is radially outward reduced, and having at least one of the following features:
  • the blade of the blade and the undercut are on the same side of the blade; and the thickness of the blade is reduced by a bevel running on the second side of the blade.
  • the invention thus proposes to provide both the edge of the cutting edge and the undercut on the same side of the blade and at the same time to arrange the usual bevel of the blade on the other side.
  • the invention contradicts the conventional arrangement, which is common practice today.
  • the new shape is somewhat pronounced in cross section of a half propeller blades with a very small angle of attack. It has been found in practical experiments that when using the new shape of the cutter knife mass, especially meat in the cutter both better fed and better crushed. The mass is promoted more in the direction of rotation, at the same time the cutter blade is better stabilized against the direction of entry of the mass. Between the first and subsequent cutter knives of a knife head, the mass is better compressed and fed to an effective fine crushing. The single cutter knife can not bend so much mass expiring, and overload breaks are prevented. The blade can be made thinner in the tip and provides less resistance when rotating in the mass. This in turn leads to a reduction of the required driving forces and to a saving of energy, eg. B. in the form of electricity savings.
  • first side of the blade extends at right angles to the axis and that the bevel on the second side of the blade is such that the front thickness of the blade adjoining the blade is equal to or greater as the rear thickness of the blade passing into the undercut.
  • Such a cutter knife is used very effectively as a so-called conveyor meter.
  • a variant of the invention provides that the first side of the blade extends at right angles to said axis and that the bevel on the second side of the blade is such that the blade adjoining the blade, the front thickness of the blade is smaller than that in the undercut passing, rear thickness of the blade.
  • Such a cutter knife is used very effectively as a so-called bladed knife.
  • the slope is at least almost radial or at least straight, only a simple surface grinding machine is needed for the production.
  • the blade includes a visible regrinding area for the arcuate cutting edge, the thickness of the blade in the regrinding area is thinner than the thickness in the central area of the blade, and the regrinding area has at least nearly parallel side surfaces.
  • the invention leads to a shape of the blade that can be reground several times, quickly and safely after reaching or exceeding the permissible degree of wear, in order to regain your sharp and optimized shape.
  • the formation of a thin re-grinding initially leads to the fact that only a very small volume of material to be removed from the blade during regrinding over the entire arc length of the blade, resulting in a fast less heat-generating and the abrasive used grinding operation. Since the re-sharpening area is clearly visible due to its thinner training, an inadmissible, excessive re-sharpening of the blade is prevented or at least immediately apparent.
  • the width of the regrinding area to the top, z As an emulsifying edge, the blade increases towards the fact that the wear of the cutting edge on and also near the tip is greater than in the area closer to the axis of rotation of the cutting edge. This widening can be optimized if the width of the regrinding area at least doubles.
  • a first side surface of the regrinding region represents a stepless continuation of the second side of the blade and that the second parallel side surface merges via a transition region into the first side of the blade.
  • the transition region can also be designed differently for different purposes. So it can consist of at least one step or steplessly pass into the two side surfaces of the blade.
  • the transition region may be formed at least predominantly straight, convex, concave or in the form of a horizontal elongated S. Stepless training favors a so-called jaw knife.
  • the transition region at least. an arcuate groove.
  • a step-shaped and a single or multiple grooved transition region lead to a congestion of the mass at the cutting edge, thus favors a so-called conveyor knife.
  • the transition region comprises two or more arcuate grooves, which are arranged on a straight line or on a convex or concave arc.
  • Such grooves may be arranged so that the number of grooves to the tip, such as in the form of a Emulgierkante, the blade decreases, Similarly, it can be provided that the groove or the grooves are not parallel to the cutting edge or run.
  • a development of the invention provides that the blade is not only changed at the cutting edge.
  • the inner, arcuate undercut of the blade consists of several parallel, arcuate grooves. Such a design can favorably influence the effect of the undercut.
  • the grooves at the transition region and / or at the undercut can be the same or similar.
  • the cross section of a groove may be arcuate and in particular circular arc-shaped, with different sizes and proportions, the effect of the grooves can be influenced.
  • the width of a groove may be several times the depth of a groove, and adjacent grooves may have the same width and / or depth. To be particularly favorable, a form has proven in which adjacent grooves form peaks between them, which preferably enclose an angle of 90 ° ⁇ 20 °.
  • At least one cutter knife is designed as a conveyor knife and at least one cutter knife as a jaw knife according to the aforementioned embodiment in the cutter head.
  • the cutter blade 1 comprises a semicircular clamping section 2 with a central bore 3 about the rotation axis XX and two centering holes 4 for attachment to centering pins, not shown, and through holes 5.
  • a sickle-shaped knife blade 6 on the outside of a part-arcuate cutting edge 7 with a wide inner Wate 8 and a narrow outer Wate 9.
  • ⁇ a relatively blunt Emulgierkante 10 at the outer end of the cutting edge 7 is followed by an obtuse angle ⁇ a relatively blunt Emulgierkante 10 at.
  • a relatively blunt, arcuate undercut 12 is attached.
  • the cutter blade 1 extends in principle at right angles to the axis of rotation XX.
  • the first side 11 of the knife blade 6 lies in the same plane as in FIG Fig. 1 visible side of the clamping section 2.
  • the clamping section 2 and the beginning of the knife blade 6 have the same thickness D, see. Fig. 2 .
  • the knife blade 6 is provided with a chamfer 15 through which the thickness D is reduced to the free end of the knife blade 6, more precisely: at the beginning of the emulsifying edge 10, to the thickness DI, compare Fig. 2 ,
  • the inclination of the chamfer 15 extends either at least approximately radially to the axis XX, ie parallel to the in Fig. 1 drawn diameter line DD, or follows at least approximately the middle curve 16 of the sickle shape, which in Fig. 3 as imaginary center line dash-dotted and in the Fig. 1 and 6 double dash-dotted line is drawn.
  • Fig. 1 at S is a section drawn by the knife blade 6. If the inclination of the chamfer 15 of the middle curve 16 follows, then the two sides 11 and 13 between the cutting edge 7 and the undercut 12, seen transversely to the inclination of the chamfer 15, preferably parallel.
  • Fig. 4 shows the section IV-IV in Fig. 1 but in a particular embodiment, bevel 15 '.
  • a significantly increased thickness D 'located The chamfer 15 'is here so inclined to the side 11 that results in a front thickness Dv, which is greater than the rear thickness Dh of the knife blade 6.
  • Fig. 5 shows a section through another cutter knife, corresponding to the section IV-IV in Fig. 1 ,
  • the chamfer 15 is here inclined to the side 11, that results in a front thickness Dv ', which is smaller than the rear thickness Dh' of the knife blade 6.
  • This form is used in a so-called chopper.
  • the aforementioned flow meter and jaw blades can be combined in a known manner to a cutter head comprising several cutter knives.
  • cutter knife can be arranged both axially in the same plane and in axially different planes.
  • the cutter knife 1 can be given a shape that resembles or at least resembles a propeller.Variable the angle of attack of this quasi propeller shape, the properties of the cutter blade 1 according to the invention
  • different cutter knives or entire cutterheads for the machining of very specific masses can either be already prepared or specially produced.
  • Fig. 7 is the section II-II in Fig. 6 drawn on an enlarged scale. It is shown a section through the regrinding region 109 of the cutting edge 7 with its slope Sn.
  • the regrind area 109 has a thickness Dn that is about half the thickness Dm of the adjacent central area 108 of the blade 6 and forms two parallel side surfaces 117 and 118.
  • the first side surface 117 extends in the same plane as the slope 15 on the side 13, so goes smoothly into page 13.
  • the second side surface 118 merges into the side 11 of the blade 6 via a transition region 120 provided with grooves 119.
  • the grooves 119 are circular in cross-section and of equal width Br and the same depth Tr, wherein the width Br 'is a multiple of the depth Tr.
  • the grooves 119 lie on a dash-dotted line 121, which connects the side surface 118 of the regrinding region 109 with the side 11 of the blade 6, and form between them tips 122 at an angle ⁇ of about 90 °.
  • Fig. 8 is the section III-III in Fig. 6 drawn on an enlarged scale.
  • a series of mutually parallel grooves 123 is arranged, which may be formed similar to the grooves 118, in particular between them also form tips 124.
  • the grooves 123 merge into a blunt edge 125 adjacent to the slope 15 of the side 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Knives (AREA)
EP08012413.4A 2007-11-21 2008-07-09 Couteau de découpe et tête porte-lame en étant pourvue Withdrawn EP2062646A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007056124A DE102007056124A1 (de) 2007-11-21 2007-11-21 Kuttermesser und damit versehener Messerkopf
DE102008012666A DE102008012666A1 (de) 2008-03-05 2008-03-05 Kuttermesser und damit versehener Messerkopf

Publications (2)

Publication Number Publication Date
EP2062646A2 true EP2062646A2 (fr) 2009-05-27
EP2062646A3 EP2062646A3 (fr) 2017-07-12

Family

ID=40336425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08012413.4A Withdrawn EP2062646A3 (fr) 2007-11-21 2008-07-09 Couteau de découpe et tête porte-lame en étant pourvue

Country Status (2)

Country Link
EP (1) EP2062646A3 (fr)
RU (1) RU2480289C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110090708A (zh) * 2019-04-15 2019-08-06 安徽华天机械股份有限公司 一种撕碎机刀片及其加工工艺
CN111871556A (zh) * 2020-08-13 2020-11-03 深圳市微米生物技术有限公司 一种果蔬垃圾破碎分选机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111778907A (zh) * 2020-07-24 2020-10-16 山东浩睿智能科技有限公司 一种带有切割装置的双滚刷抽吸吸口

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732237C1 (de) 1987-09-24 1989-03-02 Steffens Walter Gmbh Co Messerkopf fuer Kutter
CH673236A5 (fr) 1987-04-24 1990-02-28 Waelchli Hans

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864421A (en) * 1956-06-27 1958-12-16 Cincinnati Butchers Supply Co Double blade knife
DE2323016C2 (de) * 1973-05-08 1982-10-21 Erwin 7000 Stuttgart Elsässer Kuttermesser
DE2552723A1 (de) * 1975-11-25 1977-06-02 Ludwig Seydelmann Kuttermesser mit zusatz-schneidkante(n)
DE4214730C2 (de) * 1992-05-08 1994-02-24 Stimpfl Christof Kuttermesser
RU2157734C1 (ru) * 1999-03-05 2000-10-20 Рудик Феликс Яковлевич Нож куттера

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673236A5 (fr) 1987-04-24 1990-02-28 Waelchli Hans
DE3732237C1 (de) 1987-09-24 1989-03-02 Steffens Walter Gmbh Co Messerkopf fuer Kutter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110090708A (zh) * 2019-04-15 2019-08-06 安徽华天机械股份有限公司 一种撕碎机刀片及其加工工艺
CN111871556A (zh) * 2020-08-13 2020-11-03 深圳市微米生物技术有限公司 一种果蔬垃圾破碎分选机
CN111871556B (zh) * 2020-08-13 2024-05-17 深圳市微米生物技术有限公司 一种果蔬垃圾破碎分选机

Also Published As

Publication number Publication date
EP2062646A3 (fr) 2017-07-12
RU2008145935A (ru) 2010-05-27
RU2480289C2 (ru) 2013-04-27

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