Cutting machine knife for food production

Description

[0001] The invention relates to a cutting machine knife for food production, for the comminution and emulsification of fibrous amorphous products, in particular meat and fish, by a combination of cutting and striking.

[0002] In the food industry, mechanical grinding and emulsifying processes play a crucial role, with the cutter being a fundamental machine in food production. In these machines, coarse biological materials, primarily meat and fish, are ground by rapidly rotating cutting blades and emulsified through friction. However, the efficiency of these processes is limited by the shape of the cutting edges and the design and surface properties of the side surfaces of conventional cutting blades.

[0003] In the production of, for example, scalded and cooked sausage meat, the cutting action of the machine blades during processing is intended to both break down the raw material fibers and break down and emulsify the proteins they contain. In the final product, all individual components contained in the starting material, especially the meat fibers, fat particles, and water, should be bound as homogeneously as possible by the emulsified proteins. This prevents quality defects in the final product, such as water and / or jelly separation. For effective binding of the individual components, a sufficient amount of dissolved proteins must be present to form a stable protein network during the subsequent scalding process. Due to the cutting action of the machine blades and the resulting cuts, the proteins are released from the meat fibers into solution.For the best possible bonding of the individual components, a high degree of mixing and emulsification is required, primarily through friction of the individual components or their particles with each other and also with the cutting machine blades.

[0004] However, it is important to ensure that the particles are not ground too finely during processing, as otherwise the dissolved proteins would no longer be sufficient to coat the individual components, preventing the formation of a stable bond. An excessively long processing time leads to heating of the individual component particles, which is detrimental to the quality of the final product. This heating is primarily caused by friction against the rapidly rotating cutting machine blades. Consequently, undesirable denaturation of the existing proteins begins during the grinding process. In the subsequent brewing process, these proteins are no longer available for the final binding of previously unbound components.To produce high-quality end products, a specific ratio between the comminution and emulsification performance of the cutting machine knives is therefore essential, resulting in a ratio regarding the particle size obtained and the sausage meat temperature that is suitable for the complete and stable binding of the individual components.

[0005] To increase the comminution performance, DE 10 2015 200 878 A1 proposes incorporating openings with integrated cutting edges into the cutting body of the cutting machine knife. To increase the emulsifying performance of cutting machine knives, EP 1 985 369 B1 proposes incorporating recesses into the cutting body. Another example of a comminution machine is known from AT350419B.

[0006] The object of the invention is to create a more efficient cutting machine blade. The aforementioned object is achieved according to the invention by a cutting machine blade with the features of claim 1.

[0007] Accordingly, a cutting machine blade for food production is provided, comprising a cutting body and a mounting section for attaching the cutting machine blade to a rotary drive. The cutting body has two side surfaces that are at least approximately parallel to each other and at least one cutting edge with a cutting edge on a leading edge of the cutting body with respect to a rotational direction intended for operation. The feature "side surfaces of the cutting body that are approximately parallel to each other" is intended to also include, for example, the case where one side of the cutting body is conical, so that the cutting machine blade becomes flatter towards the outer radius. In the mounting section, the side surfaces are preferably exactly parallel to each other.

[0008] According to the invention, the cutting machine blade is provided that the cutting body also has at least one striking edge formed by an end face inclined relative to a plane of rotation of the cutting machine blade. This end face extends transversely to the plane of rotation of the cutting machine blade with respect to the intended direction of rotation between two flat surfaces – namely, a flat surface leading the end face in the direction of rotation and a flat surface trailing the end face in the direction of rotation. The angle of inclination of the end face forming the striking edge is between 60° and 120°, preferably between 70° and 90°, relative to the plane of rotation of the cutting machine blade. The flat surfaces between which the end face forming the striking edge extends run at an angle between 0° and 35° to the plane of rotation.The transition from the end face forming the striking edge to the flat surface trailing this end face in the direction of rotation is sharp-edged.

[0009] The invention incorporates the understanding that the particles produced during the comminution process should not be too small, so that the dissolved proteins are sufficient for a homogeneous coating and binding of the individual component particles. It has been shown that somewhat larger and fibrous particles bind better, thus improving the quality of the final product. Such fibrous particles form when a blunt cutting edge rapidly impacts the individual components, particularly when the cutting edge strikes the meat fibers. Furthermore, the proposed modified surface topography of the cutting machine blade, due to the at least one cutting edge, leads to an increase in emulsifying performance and thus to a reduction in the required processing time of the supplied material, resulting in a lower final cooking temperature and energy savings.Furthermore, the altered surface topography of the cutting machine blade results in a quality improvement with regard to the obtained end product.

[0010] A striking edge can be formed, in particular, by an end face projecting transversely outwards from one of the flat surfaces, which is inclined such that the end face and the flat surface form an angle of less than or equal to 90° between them. End faces of the cutting machine blade are those surfaces of the cutting machine blade that are visible in a view opposite to the direction of rotation of the cutting machine blade and are inclined at an angle of preferably between 70° and 90° to the plane of rotation.

[0011] Flat surfaces of the cutting machine blade include, for example, its side surfaces, but also surfaces that are only slightly inclined relative to the plane of rotation of the cutting machine blade, such as surfaces in the area of ​​the cutting edge.

[0012] Preferably, the flat surface that trails the end face forming the cutting edge in the intended direction of rotation runs at an angle between 0° and 5° to the plane of rotation of the cutting machine blade. Preferably, the transition from the end face to the flat surface that precedes this end face in the direction of rotation is also sharp-edged.

[0013] Preferably, the cutting body has at least one, but preferably at least three, projections on a flat side. The front surface of the at least one projection—relative to the intended direction of rotation of the cutting blade during operation—forms an additional striking edge. Preferably, several projections, each forming a striking edge, are arranged on a flat surface of the cutting body, with all striking edge projections being located on exactly one flat side of the cutting body. The flat surface on which the projections are arranged can, for example, be a side surface of the cutting body and is preferably the upstream side of the cutting body, i.e., the side from which the material to be shredded flows onto the cutting body during operation.The second flat side of the cutting body, opposite the first flat side with the raised sections – preferably the downstream side – therefore preferably does not have a raised section forming a striking edge. As a result, increasing the number of raised sections leads to an increased number of available striking edges. This has a beneficial effect on the fusing and emulsifying performance of the cutting machine blade.

[0014] According to one embodiment, the projections are designed to have a frustoconical geometry, with the projections having a smaller diameter at the transition to the flat surface than at their opposite ends. This means that the frustoconical projections are oriented with their top surface facing the corresponding flat surface, and the comparatively larger base area thus points away from the flat surface of the cutting body.

[0015] Alternatively or additionally, raised sections can be provided whose shape resembles a preferably three-sided prism or an inverted pyramid, wherein the cross-sections of these raised sections running parallel to the flat surface preferably have a triangular shape. This triangular shape is preferably designed such that the triangle has an acute angle pointing in the direction of rotation of the cutting machine blade.

[0016] Alternatively or additionally, raised areas in the form of ribs projecting from a flat surface of the cutting body may also be present. These rib-shaped raised areas are preferably arranged in an arc that at least approximately follows a circular arc whose center point is the axis of rotation of the cutting machine blade during operation.

[0017] Additionally or alternatively, an end face extending from the mounting section of the cutting machine blade along the cutting edge of the cutting machine blade can be provided as a striking edge, which extends to approximately the radial end of the cutting body.

[0018] With regard to the at least one such striking edge running along the cutting edge of the slicing machine knife, it can further be provided that the cutting body of the slicing machine knife has a further striking edge that is geometrically at least similar to the first striking edge. This further striking edge can be located downstream of the first striking edge – with respect to the intended direction of rotation of the slicing knife during operation. Preferably, the further striking edge adjoins the flat surface trailing behind the first striking edge. The flat surface trailing behind the further striking edge in the direction of rotation is preferably a side surface of the slicing machine knife. This means that, in this variant, the first and the further striking edge are formed on exactly one flat surface of the slicing machine knife. This can be the flat surface facing a flow of meat or the flat surface opposite this flat surface.

[0019] To increase the emulsifying performance of the cutting machine blade and thus reduce the required processing time of the supplied material, the cutting body can also be designed with a first impact edge and a second impact edge on both the first and second flat surfaces. This means that in this variant of the cutting machine blade, the cutting body has two impact edges on each flat surface: the flat surface facing the flow of the meat mixture and the opposite flat surface. Therefore, this variant has a total of four impact edges.

[0020] With regard to both the variant with two striking edges and the variant with four striking edges, the angle between the plane of rotation of the cutting machine blade and the first striking edge may differ from the angle between the plane of rotation of the cutting machine blade and the subsequent striking edge. Preferably, the two or four striking edges, respectively, may extend from the mounting section of the cutting machine blade along the cutting edge of the cutting machine blade to approximately the radial end of the cutting body.

[0021] The invention also includes the finding that the stability of the cutting machine blade is increased if the first striking edge and / or the further striking edge extends along the course of the cutting edge of the cutting body on the first and / or the second flat side into the fastening section of the cutting machine blade.

[0022] With regard to the further design of the cutting machine blade, it can also be provided that the cutting edge of the blade is formed by a bevel on the flat side of the cutting body that does not have any protrusions forming a striking edge. That is, the cutting body is beveled on the side facing away from the flat side with the protrusions in order to form the cutting edge. With respect to the intended direction of rotation during operation of the cutting machine blade, it can also be provided that at least one striking edge adjoins the bevel. The cutting edge thus advantageously ensures improved comminution of connective tissue contained in the fed material, since this is inaccessible to comminution by means of striking edges.Reducing the particle size of the connective tissue results in improved sensory properties of the final product. Furthermore, the additional striking edge advantageously increases the fiberizing performance of the cutting machine blade. Alternatively, a further flat surface can be arranged between the bevel and the at least one striking edge. Thus, the bevel is spaced – relative to the intended direction of rotation – from the at least one striking edge by this additional flat surface.

[0023] According to the invention, the cutting body of the slicing machine knife comprises additional openings. These openings form pathways extending from one flat side of the cutting body to the other. Preferably, the cutting body also has recesses. These recesses are preferably arranged in one of the flat surfaces of the cutting body that faces the meat flow and / or that has the raised areas. Both the openings and the recesses can have a circular geometry. However, this does not preclude other geometries for the openings and the recesses. Such recesses and openings in the cutting body promote the formation of a desired turbulent meat flow. This improves the mixing and emulsification of the meat.

[0024] A raised section, a cutout, and a recess can be spatially grouped together as functional elements. These functional elements can be arranged in a row, relative to the intended direction of rotation during operation. This does not preclude alternative arrangements. For example, the functional elements can also be arranged along a circular arc relative to the axis of rotation of the cutting machine blade, relative to the intended direction of rotation during operation. Preferably, a recess is provided first, followed by a cutout, and then a raised section. Furthermore, the functional elements of a functional group can partially overlap, with the cutout overlapping the recess to the same extent that the top surface of the frustoconical raised section overlaps the cutout.

[0025] Regarding the further design of the cutting machine blade, it is further provided that a number of functional groups are arranged along the cutting edge. Preferably, the functional groups are equidistant from each other in the radial direction of the cutting body. Furthermore, depending on the available width of the cutting body in the direction of rotation, several functional groups can be arranged one behind the other in the direction of rotation.

[0026] A functional group can also contain fewer than three functional elements, for example, only a raised section and a perforation, but no recess. Preferably, however, each functional group contains at least one raised section, so that a functional group can also consist of a single raised section. In this context, it can also be provided that the variants of the cutting machine knife with two striking edges extending along the cutting edge on one flat side or with two striking edges each on the first and the opposite second flat side have a number of functional groups.

[0027] The invention will now be explained in more detail with reference to an embodiment schematically depicted in a figure. Fig. 1 Views and sectional views of a first embodiment of a cutting machine blade according to the invention; Fig. 2 Views and sectional views of a second embodiment of a cutting machine blade according to the invention; Fig. 3 Views and sectional views of a third embodiment of a cutting machine blade according to the invention; Fig. 4 Views and sectional views of a fourth embodiment of a cutting machine blade according to the invention; and Fig. 5 Views and sectional views of a fifth embodiment of a cutting machine blade according to the invention; Fig. 6 Views and sectional views of a sixth embodiment of a cutting machine blade according to the invention; Fig. 7 Views and sectional views of a seventh embodiment of a cutting machine blade according to the invention; and Fig. 8 Views and sectional views of an eighth embodiment of a cutting machine blade according to the invention.

[0028] Figure 1 Figure 1 shows a first embodiment of a cutting machine blade 100. The cutting blade is relatively thin and flat and is typically made of metal. The cutting machine blade 100 has a cutting body 101 and a mounting section 102 to which the cutting machine blade 100 can be attached to a rotary drive. Starting from a rotational axis RA of the rotary drive, and thus also of the cutting machine blade 100, the mounting section 102 is located radially inward, and the cutting body 101 is located radially outward.

[0029] The cutting body 101 is integrally connected to the mounting section 102 and has two flat sides 108 and 109, a convexly curved front edge 103, a concavely curved rear edge 104 and an outer edge 105. The geometry of the cutting body 101 is crescent-shaped.

[0030] The convex leading edge 103 is located at the front of the rotating cutting machine blade 100 during operation, and the concave trailing edge is located at the rear. On the outer end of the cutting machine blade 100 furthest from the axis of rotation RR is the outer edge 105 of the cutting body 101, which has the shape of a circular arc whose center is the axis of rotation RA. The cutting body 101 tapers radially, so that at the transition to the mounting section 102 it is approximately four times wider than at its opposite radial end at the outer edge 105.

[0031] The front side of the cutting body 101 with respect to a rotation direction RR intended during operation is its end face 106. Correspondingly, the rear side of the cutting body 101 with respect to a rotation direction RR intended during operation is its back side 107.

[0032] The mounting section 102 also has two flat sides 110 and 111, which are at least approximately parallel to each other and to the flat sides 108 and 109 of the cutting body 101. The axial distance between the two flat sides 108 and 109 of the cutting body 101, that is, the thickness D of the cutting body 101, is less than the thickness D of the mounting section 102 of the cutting machine blade 100.

[0033] The cutting body 101 has a bevel 112 on its end face 106 and on its outer surface extending from the outer edge 105, forming a cutting edge with a cutting edge 113 on the cutting body 101. This bevel 112 is single-sided, i.e., the cutting body 101 is only beveled on one flat side. However, this does not preclude a double-sided bevel in a further embodiment not shown. Adjoining the bevel 112 on the end face 106 of the cutting body is a striking edge 114, formed by a section of the end face 106 extending at a right angle W to the flat side 109. The striking edge 114 extends from the fastening section 102 along the end face 106 and the outer surface of the cutting body 101 adjacent to the outer edge 105. The back side 107 of the cutting body 101 has a chamfer F on the flat side 108, which is opposite the flat side 109 with the grinding 112.The chamfer F extends from the mounting section 102 to near the outer edge 105. The chamfer F has its greatest width approximately radially in the center of the cutting body 101 and tapers towards its longitudinal ends.

[0034] The in Figure 1 The illustrated example of a cutting machine knife 100 has a number of functional elements FE for further comminution and emulsification of the supplied material M. The functional elements FE comprise three different types of functional elements, namely recesses 115 in the cutting body 101, openings 116 in the cutting body 101, and protrusions 118 on the cutting body.

[0035] The openings 116 form openings Ö extending from one flat side 108 and 109 of the cutting body 101 to the other. Both the recesses 115 and the openings 116 have a circular geometry G. The side surfaces of the recesses 115 and / or the openings 116 can be perpendicular or oblique to the flat sides 108, 109 of the cutting body 101. In the illustrated embodiment, all functional elements FE are arranged on one flat side 108 of the cutting body 101, namely on the flat side 108 opposite the flat side 109 with the grinding face 112.

[0036] The surveys 118 have, as in the exemplary embodiment of the Figure 1The projections 118 are shown in the form of an inverted truncated cone. This means that the projections 118 at the transition to the flat surface 126 of the cutting body 101, which is associated with the functional elements FE, have a smaller cross-section than their opposite outer surface 120 of the respective projection 118, which faces away from this side surface 126. This results in a lateral surface MF of the truncated cone-shaped projections 118 forming an acute angle W with the associated side surface 126, and the projections 118 forming a striking edge 117 in the direction of rotation RR of the cutting body 101. Due to the acute angle W between the lateral surface MF and the outer surface 120 of the respective projection 118, the circumferential edges 119 on the outer surfaces 120 of the projections 118 act as additional cutting edges S.

[0037] Starting from the associated side surface 126, the projections 118 also have an axial extension such that the outer surfaces 120 of the projections 118 lie in the same plane as the corresponding flat side 110 of the mounting section 102. That is, the thickness D of the mounting section 102 corresponds to the combined thickness D of the cutting body 101 and a projection 118. In a further embodiment not shown, the axial extension of the projections 118 can also be larger and / or smaller than the axial extension of the projections 118 described above. Thus, the combined thickness D of the cutting body 101 and a projection 118 can also be larger and / or smaller than the thickness D of the mounting section 102.

[0038] The recesses 115 and the openings 116 in the cutting body 101 particularly promote the emulsification of the supplied material M, as these functional elements FE ensure increased turbulence of the supplied material M. The impact edges 117 of the projections 118, in turn, enable increased fiberization of the supplied material M by causing it to be – in a sense – coarsely torn. Furthermore, the circumferential edges 119 of the projections 118 provide additional comminution of the material M. If the supplied material M is, for example, meat or fish, the action of the impact edges 114, 117, and especially the impact edges 117 of the projections 118, forms fibrous particles in the sausage meat. This is advantageous for the binding of the individual components in the final product.Furthermore, due to an increased number of available cutting edges 113, 119, i.e., due to the additional cutting action of the circumferential edges 119 of the protrusions 118, the overall available cutting length is increased. This leads to improved comminution of connective tissue contained in the material M, which in turn leads to improved sensory properties of the final product, as the particle size of the connective tissue is reduced. Moreover, the turbulent flow of the sausage meat, resulting from the depressions 115 and the openings 116, improves the mixing and emulsification of the sausage meat.

[0039] At the in Figure 1In the illustrated embodiment, the functional elements FE form functional groups FG, in which the functional elements FE – with respect to the intended direction of rotation RR during operation – are arranged one after the other in a straight line GR. Alternatively, the functional elements of a functional group can also be arranged on a curved line (not shown). In the illustrated embodiment, the sequence RF of the functional elements FE, with respect to the intended direction of rotation RR during operation, is such that the first functional element FE of each functional group FG is a recess 115, followed by an opening 116, which in turn is followed by a protrusion 118. In such a functional group FG, both the recess 115 and the opening 116 ensure improved turbulence, and the opening 116 also ensures improved mixing of the meat flow.The raised section 118 further fragments and separates the individual components of the sausage meat. In particular, the successive arrangement of the opening 116 and the raised section 118 in the direction of rotation RR ensures that the sausage meat flow is directed from the flat side 109, which faces the functional elements FE, to the respective raised section 118. This ensures that this area of ​​the sausage meat flow is also continuously subjected to further comminution and fragmentation at the raised section 118.

[0040] The previously described arrangement of the functional elements FE is therefore advantageous, but not the only possible arrangement and thus not mandatory. For example, a reversal of the order RF of the functional elements FE in a functional group FG is also possible.

[0041] The functional elements FE within a functional group FG in the rotational direction RR of the cutting body 101 partially overlap. In the Figure 1In the illustrated example, the opening 116 overlaps the recess 115 to the same extent that the side of the frustoconical protrusion 118 facing away from the associated side surface 126 overlaps the opening 116. In alternative embodiments (not shown), the functional elements FE can also have different distances from each other in the rotational direction RR of the cutting body 101. Consequently, additional areas are introduced into the cutting body 101, which ensure advantageous turbulence and thus improved mixing of the meat flow BS.

[0042] Furthermore, the exemplary embodiment of the Figure 1 The associated side surface 126 of the cutting body 101 has several functional groups FG. These functional groups FG are arranged along the convex profile of the cutting edge 113. The functional groups FG are uniformly spaced apart from each other in the radial direction R of the cutting body 101.

[0043] Since the cutting body 101 is wider near the mounting distance and tapers radially outwards, several functional elements FE and functional groups FG can be arranged one behind the other in the direction of rotation near the mounting section. Specifically, this means that the arrangement of the functional groups FG and the functional elements FE contained within a respective functional group FG depends on the width B of the associated side surface 126 in the direction of rotation RR, and the number of functional elements FE arranged one behind the other near the outer edge 105 is lower than near the mounting section 102.

[0044] Each functional group FG has at least one elevation 118, while some functional groups FG have no depth 115 and / or no breakthrough 116.

[0045] In an embodiment not shown, the associated flat side 108 of the cutting body 101 can also have only a number of protrusions 118 according to the concept of the invention in one of the Figure 1 They must be arranged in an identical, similar, or modified pattern MU.

[0046] Figure 2Figure 1 shows a second embodiment of the cutting machine knife 100. The cutting machine knife 100 has a cutting body 101 and a mounting section 102, wherein the cutting body 101 is integrally connected to the mounting section 102 and has two flat sides 108 and 109. The geometry of the cutting body 101 is crescent-shaped. In contrast to the first embodiment, the illustrated second example of a cutting machine knife 100 does not have any functional elements FE for further comminution and emulsification of the supplied material M, namely neither recesses 115 in the cutting body 101, nor openings 116 in the cutting body 101, nor protrusions 118 on the cutting body.

[0047] In the illustrated second embodiment of a cutting machine knife 100, a first striking edge 114 and a further, subsequent striking edge 124 are provided for further comminution and emulsification of the supplied material M. The first striking edge 114 and the further striking edge 124 are arranged on the flat side 109, which is opposite the flat side 108 facing the meat flow BS. In further embodiments not shown, additional striking edges may also be provided. In the illustrated embodiment, both striking edges 114, 124 extend from the mounting section 102 along the end face 106 and, in sections, along the outer surface of the cutting body 101 adjacent to the outer edge 105.

[0048] The first striking edge 114 is formed by a section of an end face 125 on the end face 106 of the cutting body 101, which runs at a right angle W to the side face 109. The end face 125 extends transversely to the plane of rotation RE of the cutting machine blade 100 with respect to the intended direction of rotation RR between two flat surfaces 122, 123 of the cutting machine blade 100. Both the transition 121 from the flat surface 122, which precedes the end face 125 in the direction of rotation RR, and the transition 121 from the end face 125 to the flat surface 123, which trails this end face 125 in the direction of rotation RR, are sharp-edged. The further, subsequent striking edge 124 is geometrically similar to the first striking edge 114.This means that the further striking edge 124 extends between two flat surfaces 122, 126 with respect to the intended direction of rotation RR, wherein the flat surface 123 trailing the first striking edge 114 is the leading flat surface 122 of the further striking edge 124. The transition 121 from the section of the end face 125 associated with the further striking edge 124 to the side surface 126 of the cutting body 101 trailing this end face 125 in the direction of rotation RR is sharp-edged.

[0049] Figure 3Figure 1 shows a third embodiment of the cutting machine knife 100. The cutting machine knife 100 according to the third embodiment differs from the second embodiment in the arrangement of the first striking edge 114 and the further, subsequent striking edge 124. Both striking edges 114, 124 are located on the flat side 108 of the cutting body 101 facing the flow of the meat. The side surface 127 of the cutting body 101 follows the striking edge 124 in the direction of rotation RR. Both striking edges 114, 124 extend into the mounting section 102 of the cutting machine knife 100, analogous to the second embodiment.

[0050] Figure 4Figure 1 shows a fourth embodiment of the cutting machine blade 100. The cutting machine blade 100 according to the fourth example is – with respect to the arrangement of the first and the further, subsequent striking edge 114, 124 – a combination of the variant of the second embodiment with the variant of the third embodiment. That is to say, the Figure 4 The illustrated embodiment features an arrangement of the first striking edge 114 and the further, subsequent striking edge 124 on both the flat side 109 and the opposite flat side 108 of the cutting body 101, which faces the meat flow BS. On the flat side 109, the side surface 126 of the cutting body 101 follows the striking edge 124 in the direction of rotation RR, while on the flat side 108, the side surface 127 of the cutting body 101 follows the striking edge 124 in the direction of rotation RR. This improves the comminution and emulsification performance of the cutting machine knife 100.

[0051] Figure 5Figure 1 shows a fifth embodiment of the cutting machine knife 100. This embodiment corresponds to the second embodiment but additionally includes a functional group FG with a number of functional elements FE for further comminution and emulsification of the supplied material M. In this embodiment, the functional group FG comprises a recess 115 in the cutting body 101 and an opening 116 in the cutting body 101. Both the recess 115 and the opening 116 have an approximately oval geometry G. Other geometries G are also possible, for example, a circular one as shown in the first embodiment. Furthermore, in addition to or as an alternative to the functional group FG shown in this embodiment, protrusions 118 can be provided on a side surface 126, 127 of the cutting body 101.It is also possible to provide more than one functional group FG, wherein the functional groups FG of a number of functional groups FG preferably extend along the cutting edge 113 of the cutting machine knife 100 and are evenly spaced.

[0052] Such functional elements and functional groups can also be used in a cutting blade according to the third and fourth embodiments (see Figure 3 and 4 ) are provided. Corresponding embodiments are therefore analogous to the embodiment shown in the figure and are not shown separately in a figure.

[0053] Figure 6Figure 1 shows another embodiment in which the projections 118' have a frustoconical geometry, wherein the projections 118' have a smaller diameter at the transition to the flat surface 108 than at their opposite ends. That is, the frustoconical projections 118' are oriented with their top surface facing the corresponding flat surface, and the comparatively larger base area thus points away from the flat surface of the cutting body. In the Figure 6 In the illustrated version, only three projections 118' are provided. These are the only functional elements, each forming a striking edge. However, other versions may also include four, five, or six projections 118'.

[0054] Figure 7Figure 1 shows a further embodiment of a cutting body 100 with projections 118", the shape of which is preferably a three-sided prism or an inverted pyramid, wherein the cross-sections of these projections running parallel to the flat surface 108 have a triangular shape. This triangular shape is designed such that the triangle has an acute angle that points in the direction of rotation of the cutting machine blade. Also in the Figure 7 In the illustrated version, only three 118" projections are provided. These are the only functional elements, each forming a striking edge. However, other versions may also include four, five, or six 118" projections.

[0055] Figure 8Figure 1 shows a further embodiment of a cutting body 100 with projections 118"' which have the form of ribs extending from the flat surface 108 of the cutting body 100. The rib-shaped projections 118‴ are preferably arranged in an arc that at least approximately follows a circular arc whose center is the axis of rotation RA of the cutting machine blade during operation. Also in the Figure 8 In the illustrated version, only three 118" projections are provided. These are the only functional elements, each forming a striking edge. However, other versions may also include four, five, or six 118" projections. Reference symbol list

[0056] 100 Cutting machine blade 101 Cutting body 102 Mounting section 103 Convex leading edge 104 Concave trailing edge 105 Outer edge 106 End face 107 Back face 108 Flat side of cutting body 109 Flat side of cutting body 110 Flat side of mounting section 111 Flat side of mounting section 112 Ground edge 113 Cutting edge 114 First striking edge 115 Recess 116 Perforation 117 Striking edge 118, 118", 118‴Rank 119 Circumferential edge of the outer surface of the rifling 120 Outer surface of the rifling 121 Transition end face / flat surface 122 Leading flat surface 123 Trailing flat surface 124 Further striking edge 125 End face 126 Side face of the cutting body 127 Side surface of the cutting body BSB Flow D Thickness FF Chamfer FE Functional elements FG Functional group G Geometry GR Straight lines Series M Material MU Pattern O Opening RE Plane of rotation RA Axis of rotation RF Sequence RR Direction of rotation S Cutting edge UR Circumferential direction W Angle

Claims

1. Cutting machine knife (100) for food production, having a cutting body (101) and a fastening section (102) for fastening the cutting machine knife (100) to a rotary drive (RA), wherein the cutting body (101) has two side faces (126, 127) which run at least approximately parallel to one another, and at least one knife with a cutting edge (113) on a front edge (103), in relation to an intended rotation direction (RR) during operation, of the cutting body (101), wherein the cutting body (101) also has at least one striking edge (114), which is formed by an end face (125), which is inclined by an angle of between 60° and 120°, preferably between 70° and 90°, relative to a rotation plane (RE) of the cutting machine knife, and extends transversely to the rotation plane (RE) of the cutting machine knife (100) in relation to the intended rotation direction (RR) between two flat faces (122, 123) which run at an angle between 0° and 35° to the rotation plane (RE), wherein a transition (121) from the end face (125) to the flat face (123) trailing this end face in the rotation direction (RR) is sharp-edged, characterized in that the cutting body (101) has breakthroughs (116) which form openings (Ö) which run from the one flat face (108, 109) of the cutting body (101) to the other.

2. Cutting machine knife (100) according to claim 1, characterized in that the cutting body (101) has at least one elevation (118) on a flat side (108, 109), wherein the at least one elevation (118) has a striking edge (117) which is formed by an end face (125) - in relation to the rotation direction (RR) intended during operation - of the at least one elevation (118).

3. Cutting machine knife (100) according to claim 1 or 2, characterized in that on a flat side (108, 109) of the cutting body (101) are arranged several elevations (118) each forming a striking edge (117).

4. Cutting machine knife (100) according to claim 3, characterized in that all elevations (118) forming a striking edge (117) are located on precisely one flat side (108, 109), such that the second flat side (108, 109) of the cutting body (101) has no elevations (118) forming a striking edge (117).

5. Cutting machine knife (100) according to at least one of claims 2 to 4, characterized in that a ground section (112) which forms the cutting edge (113) on the cutting body (101) adjoins the flat side (109) of the cutting body (101) which has no elevations (118).

6. Cutting machine knife (100) according to at least one of claims 2 to 5, characterized in that the elevation or the elevations have an ellipse-shaped, particularly circular or triangular cross-section in planes running parallel to the flat face.

7. Cutting machine knife (100) according to at least one of claims 1 to 6, characterized in that the at least one striking edge (114) is formed by an end face (125) arranged - in relation to an intended rotation direction (RR) during operation - between the two flat faces (122, 123) and running along the knife (113).

8. Cutting machine knife (100) according to claim 7, characterized in that the cutting body (101) has a further striking edge (124) which is geometrically similar to the first striking edge (114) and which adjoins on the flat face (123) trailing the first striking edge (114).

9. Cutting machine knife (100) according to claim 8, characterized in that the first and the second flat face (108, 109) of the cutting body (101) have in each case one first striking edge (114) and one further striking edge (124) adjoining on the flat face (123) trailing the first striking edge (114).

10. Cutting machine knife (100) according to at least one of claims 7 to 9, characterized in that the first striking edge (114) and / or the further striking edge (124) is extended along the course of the cutting edge (113) into the fastening section (102) of the cutting machine knife (100).

11. Cutting machine knife (100) according to at least one of claims 1 to 10, characterized in that the flat face (123) trailing - in the intended rotation direction (RR) - the end face (125) forming a striking edge (114) runs at an angle of between 0° and 5° to the rotation plane (RE).

12. Cutting machine knife (100) according to at least one of claims 1 to 11, characterized in that the cutting body (101) has indentations (115) which are arranged on the flat face (108) of the cutting body (101) which faces a sausage meat flow (BS) and / or has the elevations (118).

13. Cutting machine knife (100) according to at least one of claims 1 to 13, characterized in that in each case one elevation (118), one breakthrough (116) and one indentation (115) form functional elements (FE) of a functional group (FG), wherein the functional elements (FE) are arranged behind one another - in relation to the intended rotational direction (RR) during operation - in a row.

14. Cutting machine knife (100) according to claim 13, characterized in that the functional groups (FG) are arranged along the course of the cutting edge (113) and are evenly spaced in a radial direction (R) of the cutting body (101).

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