EP3299135A1 - Cutting blade - Google Patents

Abstract

A cutting blade (11), in particular sickle blade, for a machine for slicing food products, in particular high-speed slicer, comprising a central support (13) for fixing the cutting blade (11) to the machine, and a part-ring or annular cutting element (15), which has on its outer circumference a radially outwardly pointing cutting edge (17), wherein the carrier (13) has on its outer circumference a fastening region (19) on which for attachment of the cutting element (15) on the carrier (13) on the inner periphery of the cutting element (15) formed fixation region (21) is releasably secured, characterized in that in the circumferential direction (U) seen the attachment region (19) at least one and preferably a plurality of mutually offset and radially outwardly directed projections (23) and the fixing region (21 ) complementary to the one or more protrusions (23) at least one and preferably several Rüc has jumps (25), which are associated with the projections (23,25).

Description

The present invention relates to a cutting blade, in particular sickle blade, for a machine for slicing food products, in particular high-speed slicer comprising a central support for attachment of the cutting blade to the machine, and a part-ring or annular cutting element, which has a radially outwardly on its outer periphery has pointing cutting edge, wherein the carrier has on its outer circumference a fastening region, on which for securing the cutting element on the carrier a trained on the inner periphery of the cutting element fixing region is releasably attached.

The present invention also relates to a cutting element for a cutting blade and a blade holder for a cutting element.

A cutting blade according to the preamble of claim 1 is made DE 20 2009 017 954 U1 known.

The present invention has for its object to provide a cutting blade for a machine for slicing food products, which is easy to handle and has improved properties in the cutting operation.

The object is achieved by a cutting blade with the features of claim 1 and in particular by the fact that a cutting blade of the type mentioned is further developed in that seen in the circumferential direction of the attachment region at least one and preferably a plurality of offset from each other and radially outwardly directed projections and the fixing region complementary to the projection (s) has at least one and preferably a plurality of recesses to which the projections are associated.

In the case of the cutting blade according to the invention, one or more radially outwardly directed projections and, on the side of the cutting element, recesses associated with the projections are thus provided on the carrier side. The carrier and the cutting element are therefore not as in the aforementioned DE 20 2009 017 954 U1 along the circular arc-like edges, which have a substantially uniform distance from the cutting edge to each other, but by the projections and recesses varies the distance of the outer circumference of the carrier or the inner periphery of the cutting element to the cutting edge. The carrier or its attachment region therefore has a profile with changing radial extension through the projection or projections. The same applies to the cutting element or its fixing due to the recesses.

The recesses can be regarded as radially outwardly extending indentations or indentations in the fixing region, between which lie radially inwardly extending projections, which form radially inner sections of the fixing region, on which preferably the cutting element is fixed to the carrier.

The assignment of the projections and recesses is in particular such that when the carrier is properly fixed cutting element engages a respective projection in the associated recess. As a result, the cutting blade on a rigid structure or a rigid structure, which has an advantageous effect during the slicing operation.

Since the cutting element is detachable from the carrier, the cutting blade according to the invention has an improved handling, since e.g. in the case of a knife change, the cutting element can be removed from the carrier while the carrier can remain on the slicing machine. The removed cutting element may e.g. reground and then re-attached to the carrier. Alternatively, the removed cutting element can be replaced by a new cutting element.

Since only the cutting element must be removed, a knife change can be relatively easily performed by a person due to the weight savings achieved. This is particularly relevant against the background that ever greater cutting performance in connection with the operation of Hochleistungsslicern should be achieved. This leads to the cutting of several products next to each other and thus to wide cutting shafts and larger and larger cutting blades. This particularly affects machine concepts with sickle blades, because they only rotate around a rotation axis and must cover the working angle range with the cutting edge profile. The sickle knives thus tend to get bigger and bigger. The blades of sickle knives get ever larger radii and are also getting narrower. The handling by only one person, for example in a knife change, therefore, possibly reaches its limits, especially when a conventional, integrally trained sickle knife must be replaced.

The central carrier can be fastened or fastened to the cutter head of a slicing machine by means of connections known from the prior art. The carrier can be considered as a kind of adapter plate, which can remain on the cutter head. The carrier or its outer circumference specifies the dimensioning for the inner circumference of the cutting element. On the support different cutting elements with different dimensions Cutting can be arranged. It can therefore be realized different knife sizes.

A suitable grinding and / or sharpening device may have a corresponding central support for machining a cutting element.

Since very high rotational speeds of the cutting blade can occur in the slicing operation, the carrier and the cutting element preferably form a balanced unit.

Preferably, the outer circumference of the mounting region of the carrier along the projections at least approximately forms a wave contour and the inner circumference of the fixing of the cutting element forms along the recesses one, in particular radially outwardly extending and flush with the wave contour of the projections, complementary wave contour. Due to the wave contours results in a favorable voltage curve with respect to the attachment of the cutting element to the support and in view of the stresses to which the cutting blade is exposed during the cutting operation. Furthermore, the wave contours manufacturing technology can be easily manufactured because corners are avoided. Also included according to the invention are jagged contours, which can then also be wave-shaped, but have no or only small radii.

Viewed in the circumferential direction, the projections and the recesses may extend over an angular range which corresponds at least approximately to the angular range over which the cutting edge extends. The cutting blade thus has in the angular range in which a cutting of a product can take place by means of the cutting edge and which is also referred to as working angle range, due to the provided there projections and recesses a high rigidity, which is advantageous for the slicing operation. The opposite to the Working angle range remaining angular range is referred to as clearance angle range.

The attachment region preferably has an arc contour in the remaining angular range, that is to say at least approximately in the clearance angle region. Also included as a contour in the clearance angle range is a straight line or any other connection geometry. The cutting element can therefore completely surround the carrier and thus has a closed outer contour, whereby the stability and torsional rigidity of the cutting element is increased. This offers advantages not only during the slicing operation, but also during the production and processing of the cutting element, for example in a grinding machine.

Alternatively, the cutting element may have an interruption in an area outside the extension of the cutting edge. The cutting element thus does not surround the carrier fully, but it may be formed partially annular with an interruption. As a result, a material and weight savings can be achieved.

In particular, the cutting element can form a segment over - seen in the circumferential direction - about two thirds to three quarters of the circumference of the outer edge of the carrier.

Preferably, in the case of an interrupted cutting element, an outer, radial projection of the fastening region, seen in the peripheral direction, protrudes into the edge region of the cutting element. Good support and force transmission can be ensured in the edge area.

On the outer circumference of the attachment region, a circumferential collar is preferably arranged, which has an attachment and / or contact surface for the fixing region forms. The collar may extend continuously along the outer circumference or may have one or more interruptions.

In particular, the collar protrudes outward beyond the outer circumference of the attachment region in the radial direction, so that the fixing region can be placed on the collar or brought into contact with the collar.

Preferably, a step is formed between the outer periphery of the attachment portion and the collar. As viewed in the axial direction, the height of the step preferably corresponds at least approximately to the thickness of the cutting element on the inner circumference. The cutting element and the carrier can therefore form a substantially smooth surface when the fixing region of the cutting element is arranged resting on the collar in the step.

Preferably, the attachment region, in particular on the collar, at least one and preferably a plurality of circumferentially offset from each other fasteners, in particular attachment points or the like, for securing the cutting element. The cutting element can thus be securely attached to the carrier.

The attachment means may cooperate with associated fixing means on the cutting element to secure the cutting element to the carrier.

The fastening devices and in particular the screw-on points can be arranged and designed such that, in combination with the collar or the projections and recesses, they allow an improved and preferably optimized absorption of the forces acting on the cutting element during the slicing operation. The torsional rigidity of the cutting blade can thus be improved.

The fastening devices can be provided at least substantially only within the angular range which corresponds to the angular range over which the cutting edge extends. The fastening devices can therefore lie only in the working angle range of the cutting blade, while the clearance angle range is free of fastening devices.

Preferably, the collar between two adjacent projections of the mounting region of the carrier forms a respective fastening portion with at least one fastening device. The fixing region of the cutting element or an intervening between the adjacent projections, radially inwardly projecting portion of the fixing region can be fastened by means of the fastening device to the mounting portion of the collar. The respective fixing region section can extend radially inwardly between two recesses on the cutting element, so that the fixing region section projects into a respective indentation or indentation between the two projections on the carrier.

The respective fixing region section of the cutting element can thus be placed on the fastening section formed by the collar between the projections and fastened there. However, since the collar extends along the outer circumference of the attachment region, the fixation region portion may rest on the collar not only in the region of the attachment portion but also on the radially outward region of the collar extending along the projections. Since the projections preferably form a wave contour, the fixing region portion of the cutting element can thus rest on the approximately U-shaped extending between the projections collar and also relatively far radially inwardly fixed to the attachment portion of the collar. Depending on the contour of the projections and depending on the course of the collar along the Projections, the federal government can also form a V-shaped or differently shaped support surface for a respective Fixierbereichabschnitt.

In conjunction with the possibility of fixing the Fixierbereichabschnitte the federal government results in a structure that allows the inclusion of cutting forces in an improved manner, which act during the slicing operation in particular in the axial direction of the cutting element. The cutting forces act as compressive forces particularly strong in the region of the radial projections of the mounting portion of the carrier and press there the radially inner edge of the cutting element on the collar. At the same time as this compressive stress, tensile stresses occur during the slicing operation at the attachment points. The relatively far radially inwardly projecting Fixierbereichabschnitt of the cutting element would therefore stand out from the collar. The setting of the Fixierbereichabschnitts counteracts the support by means of a respective fastening device. The tensile forces can therefore be absorbed at the attachment points and directed to the carrier.

Due to the interlocking projections and recesses of the carrier or of the cutting element and of the outer circumference of the fastening region radially outwardly projecting collar, a special design of the outer circumference of the carrier or the inner periphery of the cutting element can be created, at least approximately the shape of stringed together, eg Has U-shaped segments. Over the respective relatively wide radial zone formed by the segments, the axially acting cutting forces can be well absorbed. As a result, the cutting blade is particularly stable and has a high torsional rigidity during the slicing operation. The cutting quality is correspondingly high because of the minimized blade deformation.

Preferably, the fastening means are at least approximately at a radius which is closer to a radially innermost point of the outer periphery of a between the two projections lying indentation of the mounting portion is as at the radially outermost points of the two projections. The axial tensile forces which occur on the cutting element during the slicing process can therefore be easily absorbed by the fastening devices and transferred radially inward onto the carrier.

Alternatively, a respective fastening device may be at least approximately at an average radius which lies between the radius on which the radially innermost point of the indentation lies and the radii on which the radially outermost points of the two projections lie. A good recording of the forces acting on the cutting element during the cutting process tensile forces is thereby possible.

The fastening devices may be at least approximately at a radius which, measured from the cutting edge, corresponds to at least approximately one quarter to one third of the cutting radius. The position of the fastening devices is thus adapted to the course of the cutting edge. In addition, the tensile forces occurring during the cutting operation can be well absorbed by the fasteners and transferred to the carrier.

According to a preferred embodiment of the invention, the fixing region has fixing devices corresponding to the fastening devices. A respective fixing device can be provided on a respective, radially inwardly projecting Fixierbereichabschnitt. The fixing device can cooperate with a respective fastening device on the lying between the projections mounting portions of the collar to attach the cutting element on the carrier.

The fixing devices on the cutting element are preferably designed as through-holes, in particular bores, while the fastening devices are preferably formed on the support as a threaded bolt or the like, so that the cutting element can be placed on the support such that the threaded bolts protrude through the through holes. On the threaded bolts then nuts can be turned on to fix the cutting element on the support. An accurate positioning of the cutting element on the carrier can be achieved.

The fastening means on the carrier may be formed as threaded holes in an alternative embodiment. The cutting element can be releasably secured by means of screws on the carrier.

The fastening devices and / or fixing devices can also be formed by, in particular automatic or semi-automatic, clamping devices. A tensioning means may be a quick-acting tension that is spring-loaded and / or pneumatically actuable.

Preferably, three to ten, in particular five or six, fastening devices and corresponding fixing devices distributed over the circumference are provided on the carrier or cutting element. In this case, preferably four fixing points are arranged equidistantly from the cutting edge in a total of six fastening devices. The two remaining attachment points are seen in the radial direction further outward and thus closer to the cutting edge. The deviations may be due to the space and a balancing mass on the cutting blade to balance the cutting blade.

According to a preferred embodiment of the invention, each of the projections on a radially outermost point, wherein the distances of the radially outermost points of all projections are at least approximately equal to the cutting edge. This has an advantageous effect on the torsional rigidity of the cutting blade. The respective distance, measured from the cutting edge, can be at least approximately one Quarter to one fifth of the cutting radius correspond. This can be contributed to achieve a high torsional rigidity of the cutting blade. In addition, a compact dimensioning for the cutting element, whereby its handling is improved.

According to a preferred embodiment of the invention is located between each two adjacent projections one, in particular behind the collar lying, indentation of the mounting portion whose outer periphery has a respective radially innermost point, the distances of the radially innermost points of all indentations Cutting edge are at least approximately equal. This can also contribute to achieving a high torsional rigidity of the cutting blade and a compact dimensioning for the cutting element can be achieved.

On one side of the carrier, a solid zone and / or a balancing mass may be arranged, which forms a survey. The balancing mass can be a mass accumulation. The solid zone and / or the balancing mass can be provided for balancing the cutting blade and dimensioned accordingly.

The surface of the carrier side may at least partially extend between the outer periphery of the attachment region and the edge of the upper side of the solid zone. As a result, a closed surface can be formed between the outer circumference of the fastening area and the solid zone.

The surface preferably has a wavy three-dimensional contour. The shape of the surface can improve the stability and torsional rigidity of the cutting blade. Also included according to the invention are jagged contours, which can then also be wave-shaped, but have no or only small radii.

Preferably, the surface is at least partially formed such that from each point of at least a portion of the outer circumference extends a connecting line to the edge of the upper side. In particular, the respective connecting line can extend in the radial direction to the axis of rotation of the cutting blade. The result is a three-dimensional geometry, through which the stability and torsional rigidity of the cutting blade is improved.

The largest material thickness can be present in the massive zone by the required balancing masses. Starting from there, each point along the multiply changing radial extension of the attachment region, in particular its corner region, can be connected in a radial manner with a uniform material thickness on the outer circumference. Due to the different distances and thus different lengths lines results in a slightly wavy surface contour along the circumference. This is in the outlet region of the cutting edge, ie the largest cutting radius, relatively flat and the beginning of the cutting edge, ie the smallest cutting radius, relatively steep. The connection between each point along the multiply changing radial extent of the attachment area and the massive center area can be understood not only as a straight line, but as part of a three-dimensional surface contour. The imaginary connecting line can-at least on subsections-also run through a calculated thickness variation or cross-sectional elevation in a stepped or arcuate manner relative to the cutting plane. The respective line can thus have a straight, stepped or curved course.

The surface may be formed by a thin wall, with an optionally filled cavity formed between the wall and the opposite side of the support. The cavity may be sealed, evacuated, or filled with inert gas or other filling material, such as light metal, foam material, Metal foam material, or be filled with a fluid. Alternatively, the area between the surface and the opposite wall of the carrier may be solid.

The particular wave-shaped surface may be connected at the outer edge with the opposite wall. The opposite wall can form a kind of rear base plate for the wearer. On the wall may also be arranged a connecting device for attaching the cutting blade to a slicing machine. In addition, the wall may have recesses for weight optimization and / or balancing pockets.

The cutting knife can not only be a sickle knife, but also a circular blade.

By radial direction is meant in particular a radial direction running away from the axis of rotation of the cutting blade. By axial direction is meant in particular a direction running along the axis of rotation.

The cutting blade according to the invention provides an easily manageable knife, in particular a sickle knife, for high-performance slitting machines. A simple knife change, even by one person, is possible. Only the cutting element, which can be considered as a part or functional element of the knife, must be removed, while the carrier, which can be considered as a receiving element for the cutting element, can remain on the cutting head. An optimization of the cutting result by the rigid construction of the knife and an optimization of the bending stiffness in the cutting area under load in the slicing operation can be achieved due to the shape of the carrier and the cutting element. The knife can also be made quite easily. Furthermore, a fixed connection of the cutting element on the carrier is possible. Several intended pressure points in the Mounting area can compensate for tolerances between the cutting element and the carrier well. By a wave-shaped design in the attachment area and the attachment over a relatively wide radial zone, the cutting blade is very stable. Operating forces acting on the blade in the axial direction are well absorbed by the improved rigidity. A high level of installation security through precise and operator-friendly positioning at all interfaces is easy to accomplish. In addition, a mass balance can be achieved on the front of the knife through the massive zone. Of course, this can also be combined with masses on the back of the knife. On the carrier provided balancing masses no longer need to be dismantled, but can remain with the carrier on the cutter head.

The invention also relates to a cutting element for a cutting blade for a machine for slicing food products, in particular high-speed slicer, wherein the cutting element is formed part-ring-shaped or annular, at its outer periphery has a radially outwardly facing edge and on its inner circumference a fixing region for attachment of the cutting element a carrier, and wherein seen in the circumferential direction of the fixing region one and preferably a plurality of recesses radially outward.

The features mentioned herein in connection with the cutting element can also be realized in the claimed cutting element.

The invention also relates to a knife holder for a cutting blade for a machine for slicing food products, in particular high-speed slicer, wherein the knife holder is designed as a carrier for a cutting element according to the invention.

The features mentioned herein in connection with the carrier may also be present in the claimed knife holder.

Fig. 1

eine perspektivische Ansicht einer Vorderseite eines erfindungsgemäßen Schneidmessers,

Fig. 2

eine Draufsicht auf die Vorderseite des Schneidmessers von Fig. 1,

Fig. 3

das Schneidmesser von Fig. 1 in einer geschnittenen perspektivischen Darstellung,

Fig. 4

eine perspektivische Ansicht der in den Fig. 1 bis 3 sichtbaren Vorderseite des Schneidenelements des Schneidmessers,

Fig. 5

eine perspektivische Ansicht der Rückseite des Schneidenelements, und

Fig. 6

eine perspektivische Ansicht der in den Fig. 1 bis 3 sichtbaren Vorderseite des zentralen Trägers des Schneidmessers.

The invention will now be described by way of example with reference to an advantageous embodiment and with reference to the accompanying figures. Show, in each case schematically,

Fig. 1

a perspective view of a front side of a cutting blade according to the invention,

Fig. 2

a plan view of the front of the cutting blade of Fig. 1 .

Fig. 3

the cutting blade of Fig. 1 in a sectional perspective view,

Fig. 4

a perspective view of the in the Fig. 1 to 3 visible front side of the cutting element of the cutting blade,

Fig. 5

a perspective view of the back of the cutting element, and

Fig. 6

a perspective view of the in the Fig. 1 to 3 visible front of the central support of the cutting blade.

The illustrated cutting blade 11 comprises a central support 13 for attachment of the cutting blade 11 to a slicing machine for food products, also known as a high speed slicer. The connecting means for attaching the cutting blade 11 to the slicing machine are arranged on the rear side of the carrier 13, not shown. With these connecting devices, the cutting blade 11 can be known per se Attach to the slicing machine so that it fits around its in Fig. 1 example drawn rotation axis D can rotate.

The cutting blade 11 comprises a ring-shaped cutting element 15, which has a cutting edge 17 pointing radially outward on its outer circumference. The axis of rotation D is perpendicular to the plane in which the cutting edge 17 extends.

The cutting element 15 is releasably secured to the carrier 13. In this case, the carrier 13 on its outer circumference on a mounting portion 19, on which for securing the cutting element 15 on the carrier 13 a formed on the inner periphery of the cutting element 15 fixing area 21 is releasably secured or fastened. More specifically, as seen in the circumferential direction U, the fastening region 19 of the carrier 13 has a plurality of projections 23 which are offset relative to one another and are directed radially outward. The fixing region 21 has recesses 25 formed complementary to the projections 23 and offset in the circumferential direction U, to which the projections 23 are assigned. When properly fixed to the carrier 13 cutting element 15 engages, as in Fig. 1 can be seen, a respective projection 23 in the respective associated recess 25 a.

The outer circumference of the attachment region 19 has at least approximately a wave contour along the projections 23. The inner circumference of the cutting element 17 has along the recesses 25 also a, radially outward and with the wave contour of the projections 23 flush, complementary wave contour on how Fig. 1 shows. The attachment region 19 of the support 13 thus has, as a result of the projections 23, at least over a part along its outer circumference a course with a multiply changing radial extent.

Seen in the circumferential direction U, the projections 23 and the recesses 25 extend over an angular range W1, which corresponds at least approximately to the angular range W2 over which the cutting edge 17 extends and which thus at least approximately corresponds to the operating angle range of the cutting blade 11 (cf. Fig. 2 ). In the remaining angular range, which corresponds at least approximately to the clearance angle range of the cutting blade 11, the attachment region 19 has at least approximately an arc contour 51.

As shown, the cutting element 15 surrounds the carrier 13 in full, so that the cutting element 15 is formed at least from the basic shape in the manner of a closed ring. Alternatively, however, the cutting element 15 may also have an interruption in a region outside the extension of the cutting edge 17 in the circumferential direction U, so that the cutting element 15 may thus be formed partially ring-shaped from the basic shape (not shown). By interrupting material can be saved, while a closed cutting element 15 is more stable.

On the outer circumference of the mounting portion 19 is a circumferential collar 27 (see. Fig. 6 ), which forms an abutment and / or abutment surface for the fixing region 21 of the cutting element 15. The radially inner portion of the fixing region 21 or of the cutting element 15 can thus be different from the one in FIG Fig. 6 seen on the front side lying on the collar 27 are brought to rest.

It is advantageous if, how Fig. 6 shows, between the outer periphery of the mounting portion 19 and the collar 27, a step 29 is formed. The height of the step 29 is preferably chosen such that it corresponds at least approximately to the thickness of the cutting element 15 on the inner periphery, so that in the transition region between the cutting element 15 and the carrier 13, a substantially smooth surface can be realized.

Between two adjacent projections 23, the collar 27 forms a respective fastening section 33, on each of which a fastening device 31 is arranged (cf. Fig. 6 ). To form a respective fastening portion 33 in the form of a bearing surface, the collar 27 is widened in the radial direction with respect to the remaining collar 27, which does not form a fastening portion 33.

The fastening means 31 are seen in the circumferential direction U offset from one another. The fastening devices 31 are, according to the illustrated example, stud bolts with an external thread. In the Fig. 6 shown nuts can be removed for attachment of the cutting element 15. The fastening devices 31 may also be a respective screw-on point in order to be able to fasten the cutting element element 15 by means of screws in a thread on the carrier 13.

The fixing region 21 has fixing devices corresponding to the fastening devices 31, which are holes 35 in the example shown. A respective bore 35 is formed on a fixing portion 37, which, like the Fig. 4 and 5 show, between two adjacent recesses 25 protrudes radially inward.

For attachment of the cutting element 15 on the carrier 13, the in Fig. 5 shown back of the cutting element 15 of in Fig. 6 shown facing the carrier 13 and the cutting element 15 is placed in this orientation on the carrier 13. The stud bolts 31 take on the holes 35. Subsequently, the nuts are screwed onto the stud bolts 31 to fix the cutting element 15 on the carrier 13.

When attached to the support 13 cutting element 15 is the respective projecting into the indentation between two projections 23 of the support 13 Fixierbereichabschnitt 37 of the cutting element 15, as in particular from the synopsis of FIGS. 5 and 6 can be seen on the collar 27 formed between the projections 23 mounting portion 33 and is fixed there. However, since the collar 27 extends along the outer circumference of the fastening region 19, the respective fixing region section 37 rests on the collar 27 not only in the region of the fastening section 33 but also on the region of the collar 27 located radially further outward along the projections 23 extends.

Due to the wave contour of the projections 23, the collar 27 forms an approximately U-shaped bearing surface for a respective fixing region 37. In conjunction with the attachment of the Fixierbereichabschnitte 37 on the collar 27 results in a structure for the cutting blade 11, which allows the recording of axially acting on the cutting element 15 cutting forces in an improved manner. These act as compressive forces particularly strong in the region of the radial projections 23 of the mounting portion 19 of the carrier 13 and press there the radially inner edge of the cutting element 15 on the collar 27. At the same time to create this compressive stress during the slicing operation at each of the intermediate attachment points with the fasteners 31 tensile stresses that are absorbed by the attachment points and transmitted to the carrier 13.

Due to the interlocking projections 23 and recesses 25 of the carrier 13 or cutting element 15 and the radially outwardly projecting from the outer periphery of the mounting portion 19 collar 27 results in a design of the outer periphery of the carrier 13 and the inner periphery of the cutting element 15, at least approximately Has form of stringing U-shaped segments. About each of the segments formed by the segments relatively wide radial connection zone, the axially acting cutting forces can be well absorbed. As a result, the cutting blade 11 is stable and has a high torsional rigidity during the slicing operation. The cutting quality is correspondingly high because of the minimized blade deformation. In the illustrated example, the fastening means 31 seen in the circumferential direction U are provided at least substantially only within the angular range W1, which corresponds to the angular range W2, over which the cutting edge 17 extends.

Such as from the synopsis of Fig. 1 and 6 it can be seen, a respective fastening device 31 is at least approximately at a radius, based on a radial direction extending from the axis of rotation D, which is closer to a radially innermost point P (see. Fig. 6 ) of the outer periphery of a lying between two respective projections 23 bulge of the mounting portion 19 is located as at the radially outermost points Q (see. Fig. 6 ) of the projections 25.

Alternatively, a respective fastener 31 may be at least approximately at an average radius between the radius on which the radially innermost point P of the indentation lies and the radii on which the radially outermost points Q of the two adjacent protrusions 23 lie.

The fastening devices 19 are at least approximately at a radius which, measured from the cutting edge 17, corresponds to at least approximately one quarter to one third of the cutting radius. The position of the fastening means 19 can therefore be adapted to the course of the cutting edge 17.

The distances of the radially outermost points Q of all projections 23 to the cutting edge 17 may be at least substantially equal. The respective distance, measured from the cutting edge 17, preferably corresponds to at least approximately one quarter to one fifth of the cutting radius. The distances P of the radially on farthest inboard points P all indentations to the cutting edge 17 may also be at least approximately equal.

At the front of the carrier 13 is a massive zone 39, which may also be a balancing mass arranged, which forms a survey.

The front surface forming surface 43 of the carrier 13 extends between the outer periphery of the mounting portion 19 and the edge 41 of the top of the solid zone 39. The surface 43 is formed such that from each point of the outer periphery a connecting line 45 to the edge 41 of the top of the solid Zone 39 runs. Due to the different lengths of the connecting lines 45 results in a wavy three-dimensional surface 43rd

The surface 43 is formed by a thin wall. Between the wall and the opposite rear side 47 of the carrier 13, an optionally filled cavity 49 is formed (see. Fig. 3 ). However, this area can also be solid.

LIST OF REFERENCE NUMBERS

11

cutting blade

13

carrier

15

cutting element

17

cutting edge

19

fastening area

21

fusing

23

head Start

25

return

27

Federation

29

step

31

fastening device

33

attachment section

35

fixing

37

Fixierbereichabschnitt

39

massive zone

41

edge

43

surface

45

connecting line

47

back

49

cavity

51

arc contour

Claims (15)

Cutting knife, in particular sickle blade, for a machine for slicing food products, in particular high-speed slicer, comprising a central support (13) for fixing the cutting blade (11) to the machine, and a part-ring or ring-shaped cutting element (15) which has a radially outwardly pointing cutting edge (17) on its outer periphery, wherein the support (13) has on its outer circumference a fastening region (19) on which a fixing region (21) formed on the inner circumference of the cutting element (15) is detachably fastened for fastening the cutting element (15) to the support (13), characterized in that
in the circumferential direction (U), the fastening region (19) has at least one and preferably a plurality of radially outwardly directed projections (23) and the fixing region (21) complementary to the projection or projections (23) at least one and preferably several recesses (FIG. 25), which are associated with the projections (23). Cutting knife according to claim 1,
characterized in that
the outer circumference of the attachment region (19) along the projections (23) at least approximately a wave contour and the inner circumference of the cutting element (15) along the recesses (25) form a, in particular radially outwardly extending and with the wave contour of the projections (23) of the carrier (13) flush, complementary wave contour. Cutting blade according to one of the preceding claims,
characterized in that
in the circumferential direction (U), the projections (23) and the recesses (25) extend over an angular range (W1) which corresponds at least approximately to the angular range (W2) over which the cutting edge (17) extends, in particular
the fastening region (19) has an arc contour (51) in the remaining angular region. Cutting blade according to one of the preceding claims,
characterized in that
the cutting element (15) completely surrounds the carrier (13) or has an interruption in a region outside the extension of the cutting edge (17) in the circumferential direction (U), and / or that a peripheral collar (19) in particular 27) is arranged, which forms a contact surface and / or contact surface for the fixing region (21), wherein, preferably, between the outer periphery of the mounting portion (19) and the collar (27) is formed a step (29). Cutting blade according to one of the preceding claims,
characterized in that
the fastening region (19), in particular on the collar (27), at least one and preferably several in the circumferential direction (U) offset from each other fasteners (31), in particular screw-on points, for fastening the cutting element (15), in particular the fastening means (31) are provided at least substantially only within the angular range which corresponds to the angular range over which the cutting edge (17) extends. Cutting knife according to claim 5,
characterized in that
the collar (27) forms a respective fastening section (33) with a fastening device (31) between two adjacent projections (23). Cutting knife according to claim 5 or 6,
characterized in that
the fastening device (31) lies at least approximately at a radius which is closer to a radially innermost point (P) of the outer circumference of an indentation of the fastening region (19) lying between the two projections (23) than at the radially outermost points (Q) of FIG Projections (23), or
in that the fastening device (31) lies at least approximately at an average radius between the radius on which the radially innermost point (P) of the indentation lies and the radii on which the radially outermost points (Q) of the two projections (23) lie; lies. Cutting blade according to one of claims 5 to 7,
characterized in that
the fastening devices (31) lie at least approximately at a radius which, measured from the cutting edge (17), corresponds to at least approximately one quarter to one third of the cutting radius, in particular with respect to the pivot point of the cutting blade. Cutting knife according to one of claims 5 to 8,
characterized in that
the fixing region (21) to the fastening means (31) corresponding fixing means (35), in particular bores, wherein insebsondere
the fixing region (21) between adjacent recesses (25) has a respective fixing region (37) protruding radially inward relative to the recesses (25) with a respective fixing device (35). Cutting blade according to one of the preceding claims,
characterized in that
each of the projections (23) having a radially outermost point (Q), wherein the distances of the radially outermost points (Q) of all projections (23) to the cutting edge (17) are at least approximately equal, in particular the respective distance, from the cutting edge (23) 17) measured from, at least approximately one quarter to one fifth of the cutting radius corresponds. Cutting blade according to one of the preceding claims,
characterized in that
between each two adjacent projections (23) one, in particular behind the collar (27) lying, indentation of the mounting portion (33) is located, whose outer periphery has a respective radially innermost point (P), wherein the distances of the radially innermost inside lying points (P) of all indentations to the cutting edge (17) are at least approximately equal. Cutting blade according to one of the preceding claims,
characterized in that
on one side of the carrier (13) a massive zone (39) and / or a balancing mass is arranged, which forms a survey, in particular
the surface (43) of the carrier side at least partially between the outer periphery of the mounting portion (19) and the edge (41) of the, preferably flat, top of the solid zone (39), wherein the surface (43) in particular has a wavy contour, wherein especially
the surface (43) is formed at least in regions such that from each point of at least one section of the outer circumference a connecting line (45) runs to the edge (41) of the upper side, wherein, preferably, the respective connecting line (45) in the radial direction to the axis of rotation ( D) of the cutting blade (11), and / or wherein, preferably, the respective line (45) has a straight, stepped or curved course. Cutting knife according to claim 12,
characterized in that
the surface (43) is formed by a thin wall, wherein between the wall and the opposite side of the carrier (13) an optionally filled cavity (49) is formed, or
in that the area between the surface (43) and the opposite wall of the carrier (13) is solid. Cutting element for a cutting knife (11) for a machine for slicing food products, in particular Hochgeschwindigkeitsslicer, wherein the cutting element (15) is formed partially annular or annular, at its outer periphery a radially outwardly facing cutting edge (17) and on its inner periphery a fixing region (21) for fixing the cutting element (15) to a support (13),
characterized in that
Seen in the circumferential direction (U) of the fixing region (21) has one and preferably a plurality of radial recesses (25) to the outside. Knife holder for a cutting knife (11) for a machine for slicing food products, in particular high-speed slicer,
characterized in that
the blade receptacle is designed as a carrier (13) for a cutting element (15) according to claim 14.

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