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
  • B26D2001/0046—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
• • 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
  • B26D2210/00—Machines or methods used for cutting special materials
  • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/929—Tool or tool with support
  • Y10T83/9372—Rotatable type
  • Y10T83/9403—Disc type

Definitions

• the invention relates to a cutting blade for machines for slicing food products, in particular for high-speed slicer, wherein the cutting blade is a rotary blade rotating during the cutting operation about a rotation axis, the at its radially outer periphery of a non-circular, in particular in the manner of a spiral to the rotational axis encircling cutting edge which lies in a plane perpendicular to the axis of rotation cutting plane.
• Such cutting blades are basically known.
• the knives used for use on slicers and especially high speed slicers usually have a bowl-like or bowl-like shape in the broadest sense; On its side facing a product to be sliced during the cutting operation, the knife body is set back from the cutting plane defined by the cutting edge of the knife. This ensures that compressions of the product convincedschnei- be largely avoided.
• this one-sided bowl or bowl shape of the knife practically does not affect the product itself during the cutting operation; To avoid the cutting blade only the product slice just separated, which is unproblematic due to their ease of deformability.
• the cutting angle is that angle which a plane surface located on the radially outer circumference of the cutting blade, which is also referred to below as a cutting surface and whose radially outer end is formed by the cutting edge, with the perpendicular to Including axis of rotation of the knife extending cutting plane.
• the size of the cutting edge ie the steepness of the cutting surface, determines on the one hand the influencing of the product to be sliced and, on the other hand, the manner of depositing the respectively separated product slice by the cutting knife. It should be noted that in conjunction with modern Hoch Anthonysslicern straight sickle blade for particularly high speeds are used. These cutting speeds are for example up to 2,000 cuts per minute, ie high-speed slicers equipped with sickle knives can easily separate more than 30 product slices per second.
• the size of the cutting angle is chosen depending on the product and application specific conditions.
• the cutting edge angle constant along the cutting edge always represents a compromise with respect to the products to be sliced.
• a too large cutting angle, i. too steep a cutting surface it should be avoided as possible, as this exerted too much pressure on the product and the product could thus be exposed to unacceptable compression.
• a small cutting angle, i. a relatively flat set cutting surface results in gentle gentle cuts that do not compress the product unnecessarily.
• the cutting blade is set too flat, the product slices can not be "wedged" in the desired manner.
• the object of the invention is to develop a cutting blade of the type mentioned at the outset in such a way that it satisfies all product or application-specific requirements. see circumstances can be fair, in particular by the cutting blade caused product compressions to be minimized and caused by the cutting blade product storage to be optimized.
• the cutting edge forms the radially outer end of a cutting surface, which forms part of the knife rear facing away from a product to be sliced during the cutting operation and includes a cutting angle with the cutting plane wherein the size of the cutting angle varies in the circumferential direction.
• the hitherto chosen path of a cutting angle which is constant along the cutting edge has been left. Rather, in the invention now a targeted change in the size of the cutting angle in the circumferential direction of the cutting blade. Of course, such changes do not involve any production-related inaccuracies which lead to deviations from a constant desired angle. Rather, according to the invention, the cutting edge angle is selectively varied to a relevant extent along the cutting edge, which has noticeable effects in the cutting operation, in particular on the extent of product upsetting caused by the cutting blade and on the way the product depositing effected by the knife.
• the invention particularly opens up the possibility of the size of the
• the cutting edge angle can be selected depending on how this peripheral region interacts with the respective product during the cutting process.
• Sickle knives are used so that they are at the beginning of a Immerse the cutting process with a peripheral area in the product at which the radius - ie the distance of the cutting edge of the axis of rotation of the knife - is the smallest. From a certain angle of rotation, which corresponds to a certain peripheral area of the cutting edge, the dipping process of the knife into the product is completed. Until the end of the cutting operation, the cutting blade moves through the product, wherein the radius due to the particular spiral-like course of the cutting edge with respect to the axis of rotation increases steadily.
• these conditions can be utilized in order to set the size of the cutting edge angle as a function of the angle of rotation or the circumferential region-for example, based on the insertion angle or immersion region-for optimizing the cutting process as a whole.
• the setting options are no limits.
• the cutting blades can be optimized individually due to the variability of the cutting angle according to the invention.
• the cutting blade has a designated direction of rotation, whereby the cutting edge angle increases counter to the direction of rotation.
• the cutting edge angle increases, ie the cutting surface on the rear side of the knife which is radially outwardly bounded by the cutting edge becomes progressively steeper during the cutting process.
• the cutting edge has an immersion region, with which the cutting blade, when used as intended, dives into a product to be sliced during the cutting operation, wherein the cutting angle is smallest in the immersion region.
• This embodiment makes use of the knowledge that product upsets through the cutting blade are largest at the moment when the cutting blade dips into the product.
• a comparatively small cutting angle for the immersion region of the cutting blade and, in particular, the smallest cutting angle formed on the cutting blade product upsets due to the inventive cutting blade are consequently minimized.
• the cutting angle can then increase steadily in particular. This ensures that, during the further course of the cutting process and in particular after completion of the immersion phase, the cutting edge angle has a size or steepness that is suitable for a desired wedge of the respective product wafer or for a rapid Res and better storage of the product disc provides, as would be the case with a consistently flat cutting angle.
• the change of the cutting angle takes place, in particular, without the formation of steps in the cutting surface. As a result, the product is disturbed as little as possible during slicing.
• the cutting angle can be constant in certain areas. However, this is not mandatory. It can also be provided that the cutting angle changes continuously or steadily, in particular increases or decreases.
• the cutting angle profile i. the course of the size of the cutting angle along the cutting edge, be designed as desired.
• the rate at which the cutting angle changes may be constant, depending on e.g. be different in size from the angle of rotation of the knife, ie from the respective peripheral region of the cutting edge, but also for different circumferential regions.
• the cutting angle changes in a range of about 20 ° to 30 °.
• the knife edge can also have flatter or steeper areas.
• the cutting surface has a width that varies depending on the size of the cutting edge angle.
• the width of the cutting surface may vary within a range of 0.5 mm to 1.5 mm.
• the cutting edge extends in particular over an angle between 180 ° and 360 °. In one possible embodiment, the length of the cutting edge in the circumferential direction is approximately 270 °.
• a further surface is formed radially inside the cutting surface, forming a part of the knife back and encloses an angle with the cutting plane, which is constant in the circumferential direction and smaller than the smallest cutting angle.
• the cutting surface and the further surface can adjoin one another directly.
• at least one transition surface is formed between the cutting surface and the further surface.
• the preparation of the cutting blade according to the invention should be discussed here only insofar as it is preferably provided that the cutting surface is formed by grinding a precursor produced accordingly.
• FIG 2 shows a partial cross-sectional view of a cutting blade according to the invention
• FIG 3 shows several cross-sectional views of a cutting blade according to the invention at different circumferential ranges.
• the sickle knife according to the invention shown in FIG. 1 comprises a cutting edge 13 which revolves like a spiral around an axis of rotation 11 and which extends approximately over an angular range of 270 ° and lies in a cutting plane perpendicular to the axis of rotation 11.
• the distance of the cutting edge 13 from the axis of rotation 11, so the radius R of the cutting blade increases continuously, namely against a rotational direction T, in which the cutting blade rotates about the axis of rotation 11 during the cutting operation.
• the sickle knife according to the invention is intended for use on a high-speed slicer.
• These slicers are provided with a so-called cutting or knife head, which has a rotary shaft 11 defining drive shaft for the cutting blade.
• the opening 29 shown in FIG. 1 is formed in the cutting blade.
• Other fastening means such as in particular arranged around the opening 29 around holes for screwing the cutting blade on the cutting head of the slicer are not shown for simplicity.
• Such sickle blades are characterized by the fact that they - as already mentioned in the introductory part - dive with a range A in the réellegande product for which the radius R is the smallest.
• the rotating cutting blade moves through the product, whereby successively the peripheral regions A, B, C and D of the knife, which are merely shown here by way of example, with the product interact.
• the radius R of the blade is greatest.
• the sickle knife according to the invention has a bowl-like or bowl-like shape.
• the knife inner side 27 is set back relative to the cutting plane 15 running perpendicular to the axis of rotation 11, a free space 25 is provided on the side of the knife facing the product 19 to be sliced during the cutting operation.
• This bowl or bowl shape of the knife already significantly reduces product compression.
• the blade rear side 21 is formed radially outwardly by a flat cutting surface 17 which is bounded radially outwardly by the cutting edge 15 defining the cutting edge 13. Radially inside, the cutting surface 17 is followed by a further flat surface 23.
• the cross section of the cutting blade according to the invention following the cutting surface 17 may differ from the embodiment shown in FIG. 2 and in principle vary as desired.
• the related concrete profile of the knife is also chosen with regard to the best possible inherent stability of the knife.
• the cutting surface 17 encloses with the cutting plane 15 an angle ⁇ which is greater than the angle ⁇ between the cutting plane 15 and the further surface 23.
• the cutting surface 17 further has a width W.
• the cutting angle ⁇ along the cutting edge 13 is not constant. Rather, it is provided that the cutting angle varies depending on the radius R of the cutting edge 13.
• Fig. 3 illustrates a possible embodiment for such a "profile" of the cutting angle in the circumferential direction.
• FIGS. 3a-3d each show a cross-section of the cutting blade according to FIG. 2 for one of the peripheral regions A-D indicated in FIG.
• Fig. 3a is in the immersion region A of the cutting blade, where the radius is smallest, the cutting angle ⁇ l also smallest. Since in this embodiment, the angle ß between the cutting plane 15 and adjacent to the cutting surface 17 further surface 23 is constant in the circumferential direction and between cutting surface 17 and further surface 23 at any point in the circumferential direction one or more transition surfaces are provided, the width W is the Cutting surface 17 in the immersion region A largest.
• the cutting surface 17 With increasing angle of rotation (counter to the direction of rotation T, Fig. 1), the cutting surface 17 is progressively steeper, i. the cutting angle ⁇ increases. Accordingly, the width W of the cutting surface 17 decreases.
• the in the circumferential direction, ie along the cutting edge 13, constant angle ß between the cutting plane 15 and further surface 23 is in this embodiment 12 °.
• angles .alpha. And .beta are of purely exemplary nature and may vary as desired depending on the products to be sliced and the specific applications, not only in terms of the absolute sizes but also in terms of the general course of the "angle profile" in the circumferential direction.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Food-Manufacturing Devices (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
• Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
• Crushing And Pulverization Processes (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=40082072

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (16)

Family Cites Families (4)

• 2007
  • 2007-08-27 DE DE102007040350A patent/DE102007040350A1/de not_active Withdrawn
• 2008
  • 2008-08-27 ES ES08785722T patent/ES2387006T3/es active Active
  • 2008-08-27 US US12/733,385 patent/US8424436B2/en not_active Expired - Fee Related
  • 2008-08-27 EP EP20080785722 patent/EP2162266B1/fr active Active
  • 2008-08-27 WO PCT/EP2008/007021 patent/WO2009027080A1/fr active Application Filing
  • 2008-08-27 AT AT08785722T patent/ATE555882T1/de active

Non-Patent Citations (1)

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