比利时专利BE1022746B1 Knife assembly for serrated knife blade and equipped with cutting system

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专利摘要:
A knife assembly comprising: a serrated blade, a holder, a clip adapted to clamp the blade to the holder, and a locking mechanism for securing the blade between the clip and the holder. The clamp has clamp parts along a clamp line behind the leading edge. The clamp comprises geometrical clamping elements corresponding to complementary geometrical contact elements of the blade, and which are at least partially spaced apart from said leading edge from the clamping line. The clamp engages the blade along the clamping line and at the corresponding geometric contact elements.
公开号:BE1022746B1
申请号:E2014/5080
申请日:2014-11-21
公开日:2016-08-29
发明作者:Brent Bucks
申请人:Fam；
IPC主号:

专利说明:

Knife assembly for serrated knife blade and equipped cutting system Technical domain
The invention relates to a knife assembly for a cutting device and furthermore a cutting device or a part thereof, such as a cutting head or system, equipped with such a knife assembly for cutting foodstuffs, and the use thereof.
Background
A cutting device using a plurality of knife assemblies is known, for example, from WO patent no. 2013/101621. A knife assembly for use in such a device is shown herein in Figure 1. Another known knife assembly is shown in Figure 25.
These knife assemblies comprise a blade with a predetermined shape for cutting foodstuffs. The blade can be placed on a knife holder and secured in the desired position by a knife clamp, using a locking mechanism. The knife assembly can further be placed on a mechanically driven cutting device to automate and speed up the process of cutting food into the desired shape and size.
It was found that the yield and appearance of the food cut by means of the known knife assemblies can be considerably influenced by the movement of the blade during food cutting. Therefore, it is crucial that the blade movement during food cutting is reduced to a minimum or eliminated.
Description of the invention
An object of the present invention is to provide an improved blade assembly for a blade such that the movement of the blade during the cutting of food items can be considerably reduced or eliminated.
An additional object of the present invention is to provide an improved blade assembly for a blade such that the amount of food that gets stuck in the space between the blade, the clamp and the holder during the cutting of food can be considerably reduced or can be reduced. be eliminated.
According to an aspect of this description, a knife assembly is provided comprising: a blade, a front edge of which is a cutting edge, a holder configured to support the blade, a clip adapted to clamp the blade onto the holder; and a securing mechanism cooperating with the holder and the clamp for securing the blade between the clamp and the holder with the cutting edge protruding from the front, the clamp having a clamping line behind the front edge corresponding to a complementary contact line on the blade, characterized in that the clamp has one or more geometric clamping elements that correspond to complementary geometric contact elements on the blade, the geometric clamping elements being at least partly at a different distance from said front edge than said clamping line, such that the clamp engages the corresponding geometric contact elements of the blade in a clamped state.
By the term "blade" as used herein is meant an object that is generally made of a piece of sheet metal and of which at least a part is made sharp. The blade can be straight or curved, usually through a forming process that takes place after sharpening the blade.
The term "unclamped state" as used herein means a state in which the blade is on the holder and the clip is on the blade without the securing means being secured or tightened to clamp the blade. The term "clamped state" means a state in which the securing means is then fully secured or tightened.
In one embodiment thereof, the knife assembly has one or more geometric clamping elements which extend over a certain length.
In one embodiment thereof, the knife assembly has one or more geometric clamping elements that are points or point-like.
In accordance with this description, a knife assembly can further be provided wherein said clamping line corresponding to a complementary contact line on the blade defines a first clamping line, and wherein one geometric clamping element is a second clamping line.
In one embodiment thereof, said first and second line can be at least partially parallel to each other.
In a further embodiment thereof, said first and second line can be at least partly straight lines.
In accordance with this description, a knife assembly can be provided wherein said clamping line corresponding to a complementary contact line on the blade defines a first clamping line, and wherein the one geometric clamping element is a clamping surface of which said first clamping line forms part.
In accordance with this description, a knife assembly can be provided wherein the clamp comprises a first part defining the clamping line, and a second part defining one or more geometric elements.
In accordance with this description, a knife assembly can be provided in which engagement between the clamping line and its corresponding contact line, and between the one or more geometric clamping elements and their corresponding geometric contact elements, is accomplished by means of selected shapes for the relevant parts of the knife, clamp and holder.
In accordance with this description, a knife assembly can be provided wherein said geometric elements are arranged in such a way that in clamped condition an even clamping force is exerted over the corresponding geometric contact elements of the blade.
In one embodiment of this description, the blade is a serrated blade over a serrated portion with a continuous shape that defines a periodic pattern of peaks and troughs over a certain distance.
In a further embodiment thereof, the clamp has an inwardly serrated shape that is complementary to that of the blade, the clamp preferably comprising a plurality of fingers whose tips together form said first part (on the first clamping line), while the rearward parts thereof together form said second part; wherein the fingers and tips define said serrated shape.
In an embodiment thereof, at least a part of one of said geometric clamping elements is a flat surface.
In yet a further embodiment, said flat surfaces are defined by inwardly chamfered parts of said clamp, preferably of said rearwardly located parts of said fingers.
In an embodiment of this description, other inwardly beveled parts of said clamp can also be provided.
In accordance with this description, the portion of said clamp related to the geometric elements and the corresponding portion of the container may be complementarily shaped (e.g., convex and concave curved; or with the clamp provided with two or three contact lines while the container is concave , etc.) for tensioning the blade.
In accordance with this description, the clamp may be formed in such a way that the clamp, in clamped condition, fits snugly over the blade over its entire width, the fit being such as to prevent food particles being cut from penetrating between the clamp and the blade. In the embodiments where the clamp comprises fingers, this can be achieved by shaping these fingers such that the fingers, when clamped, touch the blade at their tips and along their sides, such that any cavity between the clamp and the blade at the top is mainly sealed by these fingers; that is, the fit is such that food product cut is prevented from penetrating the cavity.
In one embodiment of this description, the clamp comprises blocking parts which are adapted to engage on the rear edges of the blade, such that the blocking parts in the clamped state limit the range of movement of the blade on the holder.
In one embodiment of this description, the securing mechanism comprises a plurality of fixing elements which cooperate with a plurality of boreholes provided on the holder and / or the clamp.
In accordance with this description, the holder may comprise a rear surface which has a continuous serrated shape over a certain distance corresponding to the serrated shape of the blade.
In embodiments of this description, the knurled shapes of the blade, the complementary part or the complementary parts of the clamp and / or the holder, and also those of the rear surface of the holder and / or the "shoe" or the cutting base on which the knife assembly may be mounted, including any of the following shapes: V-shaped, wavy, sinusoidal, trapezoidal, or a combination thereof, or any other serrated shape known to those skilled in the art.
Another aspect of this description, which can be combined with the other embodiments described herein, provides a cutting system with at least one knife assembly disposed along the periphery of the cutting system.
In one embodiment thereof, this cutting system, which is also referred to as "drum", has one knife assembly and is stationary, wherein food is supplied to the drum and rotated therein by means of, for example, an impeller (propeller) such that the food is pressed against the circumference of the drum by the centrifugal force and is cut by the knife assembly. Additional cutting instruments can be placed downstream of the knife assembly to further reduce the food.
In another embodiment of this description, which can be combined with other embodiments described herein, such a cutting system is provided, hereinafter referred to as a "cutting head," with at least two knife assemblies, for example (but not only) according to embodiments discussed above, which are placed along the circumference of the cutting head for cutting foodstuffs which are fed into the cutting head and are pressed against their circumference by centrifugal force. Such a cutting head can be used in a device for cutting products, comprising: a base; the above-described cutter head with knife assemblies positioned along the circumference of the cutter head for cutting food items fed into the cutter head, the cutter head being either stationary or rotatably mounted in the base; an impeller adapted to rotate concentrically within the cutting head to drive products fed into the cutting head to the circumference of the cutting head by means of centrifugal force; a drive mechanism for driving at least the impeller with a first rotational speed, and optionally also the cutting head with a second rotational speed; wherein the difference between the first and the second rotational speed determines the cutting speed.
This cutter head configuration can enable the production of a food product with a different shape impression on each side.
Brief description of the illustrations
The description of the invention will be further elucidated with the help of the following description and the accompanying illustrations.
Figure 1 shows a knife assembly according to the prior art.
Figure 2 shows an embodiment of a knife assembly according to this description.
Figure 3 shows a blade, holder, and shoe of the knife assembly of Figure 2.
Figure 4 shows the rear surface of the holder and shoe of Figure 3.
Figure 5 shows a detail of a part of the knife assembly of Figure 2.
Figures 6-7 show different views of an alternative embodiment of a holder according to this description.
Figures 8-9 show different views of a clamp of the knife assembly of Figure 2.
Figure 10 shows a cross section of the knife assembly of Figure 2.
Figure 11 shows a detail of Figure 10.
Figures 12-13 show an alternative embodiment of a knife assembly according to this description.
Figures 14-15 show a cutting head of a cutting device using knife assemblies according to embodiments of this description.
Figures 16-17 show views of a clip according to a comparative example of this description outside the scope of the claims, suitable for use with a flat surface blade.
Figure 18 shows an alternative clamp according to a comparative example of this description outside the scope of the claims, which is suitable for use with a flat surface blade.
Figure 19 shows a clamp according to an embodiment of this description.
Figure 20 shows a clamp according to an embodiment of this description.
Figure 21 shows a cross-section of a knife assembly in the clamped state according to an embodiment of this description.
Figure 22 shows a clamp according to an embodiment of this description.
Figure 23 shows a cross section of the knife assembly of Figures 12-13.
Figure 24 shows a fully schematic representation of this description.
Figure 25 shows another knife assembly from the prior art.
Figure 26 shows an embodiment of another possibility for a knife assembly, outside the scope of the claims.
Figures 27-29 shows a further embodiment of a knife assembly according to this description, outside the scope of the claims.
Embodiments of the invention
The invention will be described with reference to specific embodiments and with reference to certain illustrations; however, the invention is not limited thereto, but is only determined by the claims. The illustrations described are only schematic and non-limiting. In the illustrations, the size of some elements for illustrative purposes may be magnified and not drawn to scale. The dimensions and relative dimensions do not necessarily correspond to actual practical embodiments of the invention.
Furthermore, the terms first, second, third, and the like, in the description and claims, are used to distinguish between similar elements, and not necessarily to describe a sequential or chronological order. The terms are interchangeable under appropriate circumstances, and the embodiments of the invention may function in sequences other than described or illustrated herein.
Furthermore, the terms upper, lower, top, bottom, and the like, in the description and the claims, are used for descriptive purposes, and not necessarily to describe relative positions. The terms thus used are interchangeable under appropriate circumstances, and the embodiments of the invention described herein may function in other orientations than described or illustrated herein.
Furthermore, even though they are referred to as "preferred embodiments", the various embodiments are to be regarded as examples of ways in which the invention can be implemented, and not as limiting the scope of the invention.
The term "comprising", used in the claims, should not be interpreted as being limited to the means listed thereafter; it does not exclude other elements or steps. The term is to be interpreted in the sense that it specifies the presence of said properties, numbers, steps or components as indicated, but does not exclude the presence or addition of one or more other properties, numbers, steps or components, or groups thereof from. The scope of the expression "a device comprising A and B" should therefore not be limited to devices that consist solely of components A and B; it means that with regard to the invention, the only components listed are devices A and B, and the claim should be further interpreted to include equivalents of those components.
In the course of the entire description, "clamping" means any of various devices used to assemble, clamp, support, or compress mechanical or structural parts, such as in this description the blade on the holder. By "holder" is meant any device for holding or supporting mechanical or structural parts, such as the blade on the holder in this description. By "geometric clamping element" is meant any point, line, area or in general surface part or part of the clamp which is arranged to engage with corresponding geometric contact elements on the blade. Figure 24 shows a fully schematic representation of this description with only hypothetical dimensions and shapes, with a blade 400 of which a leading edge 410 is a cutting edge, a holder 430 which, as shown, may be somewhat concave and which is configured to support the blade 400, a clamp 420 adapted for clamping the blade 400 on the holder, the clamp behind the front edge having a clamping line 440 in the orthogonal direction to the figure (thus represented here by a point ) corresponding to a complementary contact line on the blade. The clamp includes clamping members (e.g. the fingertips described herein) for contacting and clamping the blade 400 at this clamping line 440. The clamp comprises at least one geometric clamping element 450 corresponding to a complementary geometric contacting element 450 of the blade, wherein the geometric clamping element 450 is at least partly at a different distance from said front edge 410 than said clamping line 440, preferably further back from said front edge than said clamping line. The clamping parts and geometric clamping elements 450 are adapted in such a way that the clamping 420, when clamped, engages the blade 400 at the clamping line 440 and also with the corresponding geometric contact elements 450 of the blade 400.
In the following, embodiments of knife assemblies for flat blades and knife assemblies for serrated knife assemblies are described. The knife assemblies for flat knives are in themselves outside the scope of the claims, but are included here as examples for comparison. Moreover, it is noted that many features of the knife assemblies for flat knives may also be present in the knife assemblies for knurled knives, and vice versa, such as for example (not limited to): the beveled parts and their length; the fixing mechanism, comprising a plurality of fixation elements that interact with a plurality of boreholes; the blocking parts and blocking elements which are adapted to engage on rear edges of the blade, such that the blocking parts in the clamped state limit the range of movement of the blade on the knife holder; the positioning means for accurately positioning the blade and the clamp on the holder before tightening the securing mechanism.
According to this description, a knife assembly is provided comprising: a blade 101, 200, 400, a front edge 410 of which is a cutting edge, a holder 100, 201, 430 configured to support the blade 101, 200, 400, a clamp 102, 202, 420, 600 arranged to clamp the blade 101, 200, 400 on the holder 100, 201, 430, and a locking mechanism 103, 203 which cooperates with the holder 100, 201, 430 and the clamp 102, 202, 420, 600 for attaching the blade 101, 200, 400 between the clamp 102, 202, 420, 600 and the holder 100, 201, 430 with the cutting edge 410 protruding at the front, the clamp 102, 202, 420, 600 has a clamping line 120, 220, 440, 620 behind the front edge corresponding to a complementary contact line on the blade 101, 200, 400. The clamp 102, 202, 420, 600 comprises one or more geometric clamping elements 115 , 215, 450, 615 corresponding to complementary geometric contact elements of the blade 101, 200, 400, the ge ometric clamping elements 115, 215, 450, 615 are at least partially at a different distance, preferably to the rear, from said front edge than said clamping line 120, 220, 440, 620, such that the clamp 102, 202, 420, 600 engages the corresponding geometric contact elements 115, 215, 450, 615 of the blade 101,200, 400 in clamped state.
In accordance with this description, the knife assembly may be arranged such that the geometric clamping elements 115, 215, 450, 615 of the clamp 102, 202, 600 are not in engagement with the corresponding geometric contact elements 115, 215, 450 in mounted, but not clamped state. , 615 of the blade 101, 200, 400, and that the geometric clamping elements 115, 215, 450, 615 of the clamp 102, 202, 600 in the clamped state, ie tightened with the locking mechanism, are in engagement with the corresponding geometric contact elements 115, 215, 450, 615 of the blade 101, 200, 400.
In accordance with this description, a knife assembly can also be provided, an example of which can be seen in Figure 18, wherein said clamping line 120, 220, 440, 620 corresponding to a complementary contact line on the blade 101, 200, 400 and a first clamping line 120 , 220, 440, 620, and wherein said one or more geometric clamping elements 115, 215, 450, 615 are a second clamping line 625, and optionally one or more third clamping lines (not shown) between the first and the second clamping line. The clamping lines are preferably parallel to each other.
In accordance with this description, a knife assembly can be provided, examples of which are shown in Figures 8-11 and Figures 16-17, wherein said clamping line 120, 620 corresponding to a complementary contact line on the blade defines a first clamping line 120, 620, and wherein said geometric clamping element (s) 115, 615 is (are) a clamping surface (s) 115, 615, of which said first clamping line 120, 620 forms part.
In accordance with this description, a knife assembly can be provided wherein the clamp 102, 202, 420, 600 comprises a first part defining the clamping line 120, 220, 440, 620 and a second part which comprises one or more geometric elements 115, 215, 450, 615.
In accordance with this description, a knife assembly can be provided wherein the clamp 102, 202, 420, 600 is constructed in such a way that the geometric clamping elements 115, 215, 450, 615 are spaced apart from the corresponding contact surfaces of the blade 101, 200, 400, and that the clamping geometric elements 115, 215, 450, 615 engage with the corresponding contact surfaces of the blade 101, 200, 400 with a predetermined clamping force.
In one embodiment of this description, the blade 101, 200 is a serrated blade 101, 200 over a serrated portion with a continuous shape that defines a periodic pattern of peaks and troughs over a certain distance.
In a further embodiment thereof, the clamp 102, 202 has an inwardly molded form 116 that is complementary to that of the blade 101, 200, the clamp preferably comprising a plurality of fingers whose tips together form said first part while the rearward parts thereof together form said second part, wherein the fingers and tips define said serrated shape.
In one embodiment of this description, the clamp 102, 202 has an inwardly molded form 116 that is complementary to that of the blade 101, 200, the clamp preferably comprising a plurality of fingers while the rear portions thereof are side surfaces of said fingers include those adapted to make contact with oblique portions of the blade.
In an alternative embodiment of this description, the blade assembly is arranged so that the blade 101, 200, 400 is a flat blade 101, 200, 400.
In accordance with this description, the geometric clamping elements 115, 215, 450, 615 can be arranged such that the clamp in clamped state 102, 202, 420, 600 is continuously engaged with the corresponding geometric contact elements of the blade 101, 200, 400 over the entire length of the geometric clamping elements 115, 215, 450, 615.
In one embodiment of this description, the blade assembly has inwardly beveled portions 115 adapted to engage portions of the valleys of the blade 101, 200, 400.
In one embodiment thereof, the inwardly bevelled parts 115 have a length of at least 1 mm, preferably at most 20 mm, more preferably at most 15 mm, and more preferably at most 10 mm.
In an embodiment of this description, the clamp 102, 202 comprises blocking parts 204 which are adapted to engage on rear edges 108, 205 of the blade 101, 200, such that the blocking parts 204 in the clamped state the movement range of the blade 101 , 200 on the knife holder 100, 201.
In one embodiment of this description, the locking mechanism 103, 203 comprises a plurality of fixation elements that cooperate with a plurality of boreholes 106 provided on the holder 100, 201 and / or the clamp 102, 202.
In one embodiment thereof, the fixing elements provide blocking elements 107 which are adapted to engage on the rear edges 108, 205 of the blade, such that the blocking elements 204, in clamped condition, the range of movement of the blade 101, 200 on the holder 100, 201 limit.
In a further embodiment thereof, each of the blocking elements 107 comprises parts 109 which are adapted to engage on the rear edges 108, 205 of the blade 101, 200 at a predetermined location, and which are formed to lower it onto the holder 100, 201. In one embodiment, this shaped portion may be a tapered portion; it can be axially concave or axially convex, depending on the shape of the blade with which they are to be engaged.
In an embodiment in accordance with this description, the clamp is constructed in such a way that the geometric clamping elements, in particular the beveled parts 115, are in a clamped state at a distance from the corresponding contact surfaces of the blade 101, 200, and that the geometric clamping elements, in particular the chamfered parts 115, engage in clamped condition on the corresponding contact surfaces of the blade 101, 200 with a predetermined clamping force. This shift is predetermined and selected such that when the fastening means is tightened to the clamped state, the chamfered portions 115 make almost complete and continuous contact with the corresponding contact surfaces of the blade.
In an embodiment in accordance with this description, the blade 101, 200, 400, in the clamped state, projects a predetermined distance over an edge of the holder 100, 201,430.
In a further embodiment thereof the blade 101, 200, 400 protrudes in the clamped state by at least 1 mm over an edge of the holder 100, 201, 430, preferably at most 4 mm, more preferably at most 3 mm, with more preferably 2.5 mm.
In accordance with this description, the holder 100, 201, 430 may comprise a rear surface 111 with a serrated shape extending over a certain distance that corresponds to the serrated shape of the blade 101,200, 400.
This description further provides a cutting system 300 with at least one knife assembly disposed along the periphery of the cutting system.
In one embodiment thereof, this cutting system, which is also called "drum", has one knife assembly and is stationary, with food being supplied to the drum and being rotated therein by means of, for example, an impeller, such that the food is passed through the centrifugal force is pressed against the circumference of the drum and is cut by the knife assembly. Additional cutting instruments can be placed downstream of the knife assembly to further reduce the food.
This description further provides a cutting head 300 with at least two knife assemblies 301, 302, for example as discussed above, which are placed along the periphery of the cutting head 300 for cutting food items fed into the cutting head 300, the cutting head 300 being adapted is to be rotatably mounted on a base.
This description further provides a device for cutting products, comprising: a base; a cutting head 300 as described above with knife assemblies positioned along the periphery of the cutting head 300 for cutting food supplied to the cutting head 300, the cutting head 300 being rotatably mounted to the base; an impeller adapted to rotate concentrically within the cutting head 300 to drive products fed into the cutting head to the circumference of the cutting head 300 by means of centrifugal force; a driving mechanism for driving at least the impeller with a first rotational speed.
In one embodiment thereof, the device comprises a second driving mechanism for driving the cutting head 300 with a second rotation speed, the second rotation speed being different from the first rotation speed of the impeller.
Figure 1 shows a knife assembly according to the prior art, equipped with a serrated blade 101 which is placed in an oblique direction on a holder 100. The blade 101 is attached to the blade holder 100 by means of a clamp 102 and a plurality of securing means 103. The clamp has a plurality of fingers, the tips of which are adapted to make contact with the blade 101 (along a clamping line 120).
Figure 25 shows another knife assembly according to the prior art. The parts (holder, knife and clamp) are brought from straight form to knurled form by compression molding. The contact between clamp and knife is only partly along the front line. There are gaps 127 between the knife and the clamp. It has been found that this disadvantageously makes it possible for food to make its way inwards and ultimately to open the gap, which is not desirable.
Figure 2 shows an embodiment of a knife assembly according to this description. In this embodiment the clamp 102 can be arranged such that it comes into engagement with the blade 101 over a longer contact surface, whereby the (fluctuating) movement of the blade 101 during the cutting of foodstuffs is considerably reduced or eliminated.
The knife assembly shown in Figure 2 includes a holder 100, which has a serrated shape adapted to support a serrated shape blade 101, and a clamp 102 configured to clamp the blade 101 on the holder 100 The blade 101 can be secured between the clamp 102 and the holder 100 by means of a fastening mechanism with a plurality of fixing elements 103, for example bolts adapted to cooperate with suitable boreholes. In addition, the knife assembly can be mounted on a shoe 104 of a cutting device, such as the cutting devices shown in Figures 14-15. As shown in Figure 3, the holder 100 may be provided with boreholes 106 which are adapted to receive the fixing elements 103 of the fixing mechanism for fixing the blade between the clamp 102 and the holder 100. The blade may be arranged such that it protrudes a predetermined distance from an edge of the container, as can be seen in Figure 2 and further in Figure 10. This distance generally determines the thickness of the cut food product and must remain constant during the cutting of the food product; otherwise the food can be cut irregularly, considerably reducing the production yield. To maintain the distance that the blade protrudes over the holder, a plurality of blocking elements 107 can be provided at specific locations on the holder 100. The blocking elements 107 can be used to engage a rear edge 108 of the blade, as seen is in Figure 5 such that the range of movement of the blade 101 on the holder 100 can be limited. In other words, the blocking elements 107 can function as a rear blocking means which prevents the movement of the blade 101 during the cutting of foodstuffs in at least one direction, for example in the lateral direction. The blocking elements 107 can further be provided with tapered parts 109 which are adapted to engage on the rear edges 108 of the blade 101 and press the blade 101 down onto the holder 100, whereby the range of movement of the blade 101 on the holder 100 is limited. The shape of the blocking elements 107 may further be adapted to correspond to a complementary form of suitable boreholes 110 provided on the holder 100, thereby making it possible to lock the blocking elements 107 in the predetermined locations on the holder 100 and ensure that they do not come loose while cutting food. In embodiments according to this description, the blocking elements 107 may form part of the locking mechanism.
In embodiments of this description, the holder 100 can further be provided with a back surface 111 with a serrated shape, which can be adapted to correspond to the serrated shape of the blade 101, as can be seen in Figure 4. Moreover, the shoe can 104 also have a serrated shape, which preferably corresponds to the serrated shape of the holder 100. This configuration of the rear surface of the holder 100 and the shoe 104 can alleviate the problem of stones penetrating into the food to be cut into the cutting device, and can prevent these stones from damaging the blade. Furthermore, the grooves of the serrated shape can reduce friction between the food rotating within the cutter and reducing the rear surface of the container.
An alternative embodiment of the holder 100 is shown in Figure 6 and Figure 7. The main difference with the embodiments presented above, which are shown in Figures 2 to 4, is that the shoe 104 is integrated in the holder 100 in this case, and thereby forming a single component that can be attached to a cutting device, such as the device shown in Figures 14 and 15. An additional advantage of this integrated solution is that the holder 100 has room here to accommodate a clamp (not shown) which extends further to the rear, in other words, which has an extension behind the fixing screws 103 (in the embodiment of Figure 2, such an extension is not possible due to the ledge behind the clamp). This entails the advantage that the point of support for the fixing screws 103 is in a better position. In conventional prior art knife assemblies, the screws are in a position with a ratio of about 70:30, i.e., they are closer to the rear of the clip than to the front edge. This means that the screw exerts only 30% of its force on the front part of the clamp. The holder 100 of figures 6 and 7 can receive a larger clamp, ie a clamp that extends farther back, and improve the ratio to, for example, 50:50, which means that the screws 103 extend approximately halfway between the rear of the clamp the front part thereof.
Figures 8-9 show an embodiment of a clamp 102 according to this description. The clamp 102 includes an inclined portion 113 that protrudes from a flat portion 114 such that the inclined portion 113 can be arranged to engage the blade in the clamped state at predetermined locations. The flat portion 114 of the clamp can be provided with boreholes 106 which are adapted to receive the fixing elements 103 of the fixing mechanism for fixing the blade 101 between the holder 100 and the clamp 102. The clamp 102 comprises geometric clamping elements 115, which may, for example, be defined as inwardly beveled parts, which may define clamping surfaces corresponding to complementary contact surfaces of the blade 101. As can be seen in the cross-sectional views of Figures 10 and 11, the beveled parts 115 may extend over a certain length.
In embodiments according to this description, the length of the inwardly bevelled parts 115 (measured in a direction perpendicular to the front edge) can be at least 1 mm, preferably at most 20 mm, more preferably at most 15 mm, and with even more preferably at most 10 mm.
In embodiments according to this description, the inwardly bevelled parts 115, or the geometric elements in general, may be adapted to fit in the clamped state with the contact surfaces of the blade 101, such that the clamp 102 extends continuously over the entire length of the inwardly chamfered parts 115 engage on the corresponding contact surfaces of the blade 101. This configuration of the clamp 102 may allow the blade to be clamped tightly over a longer contact surface, whereby the movement of the blade during the cutting of foodstuffs is considerably is reduced in comparison with the prior art.
In embodiments of this specification, the inwardly chamfered portions 115 may be spaced from the contact surfaces of the blade in the unclamped state in which the clip is not secured to the holder. This distance is predetermined and chosen such that when tightening the securing means to the clamped state (see, for example, figures 11 and 21) the chamfered parts 115 make almost complete and continuous contact with the corresponding contact surfaces of the blade.
In embodiments according to this description, the clamp 102 can be arranged such that each of the geometric clamping elements 115, 215, 450 and 650 engages a respective trough of the blade, as can be seen in figure 2 and figure 10. This configuration can ensure that the clamp exerts an even amount of pressure over the entire surface of the blade 101.
In alternative embodiments (not shown) according to this description, other configurations known to those skilled in the art can also be considered. For example, an alternating clamp configuration may be used in which the inwardly chamfered portions 115 engage the blade 101, or similar configurations, alternately.
In embodiments of this description, the clamp 102 may further be provided with an inwardly serrated shape corresponding to that of the blade 101. The serrated shape may be provided on the rear surface of the clamp over a portion of the oblique part 105, such as can be seen in figure 8 and figure 9. This configuration can make it possible for the clamp 102 in the clamped state not only to engage the valleys, but also at other locations of the blade 101, for example the peaks and / or the oblique parts in between, whereby the blade 101 is better attached to the holder 100 than in the prior art.
Figures 12 and 13 show an alternative embodiment of a knife assembly according to this description. In this embodiment, the serrated shape of the blade 200 has a substantially stepozoal shape, with cross-sections with a large amplitude. The amplitude of the notches of the blade 200 can be, for example, at least 1.0 mm, preferably at most 20.0 mm, and more preferably at most 10.0 mm. The holder 201 can be provided with a serrated shape suitable for supporting the blade 200. As in the previous embodiments of this description, a clamp 202 can be used to attach the blade 200 to the holder 201 by means of a locking mechanism 203 which comprises a plurality of fixing elements, for example bolts. The clamp 202 of this embodiment can be provided with blocking parts 204 which are adapted to engage on rear edges of the blade 200, as can be seen in figure 13. The blocking parts 204 can function as a rear blocking means for preventing the movement of the blade in at least one direction, for example a lateral direction, during the cutting of foodstuffs. In embodiments according to this description, the blocking parts 204 can be used in combination with the blocking elements 107. As with previous embodiments of this description, the clamp 202 can be provided with inwardly beveled parts which define clamping surfaces corresponding to contact surfaces of the blade, whereby the it becomes possible to clamp the blade 200 over a larger contact surface with the clamp 202.
Figures 16 to 18 show a clamp 600 with boreholes 601 according to a comparative example of this description, for clamping flat blades. Figures 16 and 17 each show a portion 602 with a radius such that they fully touch the blade (the holder is curved in a complementary manner), while Figure 18 shows a flat portion 602 that would touch on two lines, at the point 620 and at the point 620 the heel 625 of the chamfered portion 603. Figures 19, 22 and 23 show different views of a clamp 700 similar to the clamp 202 of Figures 12-13. The clip has fingers 710 extending outward in an oblique direction from a flat portion of the clip 710, where the drill holes 701 for the locking mechanism are provided. The fingers 710 are provided with geometric clamping elements 715 which are adapted to engage a serrated blade 702 at predetermined locations. Figures 20 and 21 show different views of a clamp 650 similar to the clamp 102 of Figures 8-11. The clamp has fingers 660 that extend outwardly in an oblique direction from a flat portion of the clamp 650, where the drill holes 651 are provided for securing the clamp to the holder 670. The fingers 660 are provided with geometric clamping elements 715, in particular inclined surfaces 665, 667 and top surfaces 666, which are adapted to engage at predetermined locations on a serrated blade 601. In all these cases, the knife would be held in at least two places instead of only along a single clamp line on the front edge of the clamp.
Figure 23 shows a top cross-sectional view through an embodiment of a knife assembly according to this description, in particular the embodiment with the clamp 700 from Figures 19 and 22. As shown, the clamp is formed in such a way that the clamp in the clamped state closely over the blade fits over its entire length. In particular, the clamp 700 is provided with fingers 710 adapted to engage at the apex on a serrated blade 702 (not shown), and which have geometric clamping elements 715 adapted to engage on the serrated blade on the side walls of the valleys formed by the serrated shape of the blade 702. The fingers 710 may be disposed in an oblique direction such that a cavity 717 may be present between the blade 702 and the clamp 700 in the vicinity of the posterior edge of the clamp 700. This cavity 717 is substantially sealed at the top by the fingers 710 which touch the blade at their tips and along their sides. In other words, at the first contact line of the clamp with the food being cut, the fit is such that particles are prevented from penetrating the cavity. Also in the other embodiments of this description shown in the figures, the clip fits snugly over the blade, to the extent that food product cut is prevented from penetrating between the blade and the clip.
The knife assembly according to embodiments of this description can further be mounted on a cutting head of a cutting device, as can be seen in figure 14 and figure 15.
Figure 14 and Figure 15 show a cutter 300 for a cutter (not shown). The cutter head 300 includes a plurality of cutter assemblies 301 which may be positioned along the periphery of the cutter head 300 for cutting food supplied to the cutter head. The cutting head can be rotatably mounted on a base (not shown) of a cutting device. The cutting device may further comprise an impeller (not shown) adapted to rotate concentrically within the cutting head 300 to drive food supplied in the cutting head 300 to the periphery of the cutting head 300 by means of centrifugal force. The impeller can be driven with a first rotational speed through a first drive mechanism (not shown). In embodiments according to this description, the cutting head can further be driven by a second drive mechanism (not shown) with a second rotational speed. In certain embodiments, the rotational speed of the impeller can be different from the rotational speed of the cutter 300.
In embodiments of this description, the cutter head 300 may be equipped with a first blade assembly 301 with a blade in a first shape, and a second blade assembly 302 with a blade in a second shape that may be different from that of the first blade assembly. For example, the first knife assembly 301 may have a serrated blade, while the second knife assembly 302 may be equipped with a planar blade. In a further example, the blade of the first assembly 301 may have a serrated shape that may be adapted to be different from the serrated shape of the second knife assembly 302. This cutter head configuration may be used to produce foodstuffs placed on each of its sides has a different shape impression.
In the above-mentioned embodiments of this description, an improved blade assembly for a blade can be provided such that during the cutting of food, the amount of food that becomes stuck in any space between any of the following elements, in the in particular the blade, the clamp and the holder, is considerably reduced or eliminated, more in particular by providing fully complementary shapes for the clamp and the knife and / or the knife and the holder. In a further embodiment thereof, the perfect fit can be realized with the aid of grinding, in particular by programming the grinding process to obtain the shapes discussed above, and thus programming the shape until the fit is substantially complementary.
In a further embodiment thereof, in particular for use with blades having a shape with symmetrical top and bottom, such as a wave form, the same grinding wheel can be used to form the clamp and the holder, and even parts of the cutting system or the cutting head or drum if it is desired that the grooves are also present on the inside of the cutting system or the cutting head or drum.
Figure 26 shows an alternative possibility for a knife assembly for a cutting system (head or drum). In this possibility, the knife assembly comprises a cutting base 800 to which a knife 801 is attached. The knife 801 is in fact the knife holder 201 of the other embodiments described here, but then sharpened by means of a grinding operation such that it becomes a knife per se. The grinding operation is carried out at the top after the step-like waveform has been obtained, with the result that the peaks are located behind the front cutting edge. An advantage of this knife is that during cutting the valleys 802 of the knife first come into contact with the food, before the peaks 803 of the knife, such that the food product is cut in a more sequential manner, which means the quality of the cut product can improve and reduce blade wear. This principle can also be applied to other knife shapes, such as triangular wave shapes (such as, for example, the knife holder 100, but then made sharp so that it is itself a knife), sinusoidal wave shapes, or other repetitive or non-repetitive shapes.
Figures 27-29 show a further embodiment of a knife assembly according to a comparative example of this description with locating pins 904, 905 on the holder 902 and corresponding holes 906, 907 in the blade 901 and the clamp 900. These pins and holes function as positioning means for accurately positioning the blade 901 and the clamp 900 on the holder 902 before tightening the locking mechanism, which in this embodiment is formed by the bolts 908 provided through slots 909 in the clamp 900 formed for enabling accurate positioning. These positioning means, which can also be realized with means other than the pins and holes shown in Figures 27-29, can help to achieve the above-described close fit of the clamp over the blade, in other words to prevent nutritional particles from penetrating between the clamp and the blade. In figures 2729 the positioning means are shown on an embodiment with a flat blade, but it is clear that such positioning means can also be provided on embodiments with serrated blades, such as embodiments described here.

权利要求:
Claims (15)
[1]
Conclusions
A knife assembly, comprising: a blade (101, 200), a leading edge of which is a cutting edge, the blade (101, 200) being a serrated blade (101, 200) comprising a serrated portion having a continuous shape that extends over a certain distance determines a periodic pattern of peaks and troughs; a holder (100, 201) configured to support the blade (101,200); a clamp (102, 202, 600) adapted to clamp the blade (101, 200) on the holder (100, 201); and a locking mechanism (103, 203) cooperating with the holder (100, 201) and the clamp (102, 202) for attaching and clamping the blade (101,200) between the clamp (102, 202) and the holder (100 , 201) the cutting edge protruding on the front side, the clamp (102, 202) having clamping members along a clamping line (120, 220) for engaging the blade (101, 200) with a complementary contact line on the blade (101 , 200) behind the front edge of the blade; characterized in that the clamp (102, 202, 600) has an inwardly serrated shape (116) that is complementary to that of the blade (101, 200) and comprises one or more geometric clamping elements (115, 215, 615) corresponding with complementary geometric contact elements of the blade (101, 200), the geometric clamping elements (115, 215, 615) being at least partially spaced apart from said front edge than said clamping line (120, 220) and arranged such that the clamp (102, 202) in clamped condition at least partially engages blade (101, 200) along the clamping line (120, 220) and at the level of the corresponding geometric contact elements (115, 215, 615).
[2]
The knife assembly according to claim 1, wherein the engagement of the clamping line (120, 220) with its complementary contact line and of the one or more geometric clamping elements (115, 215, 615) with their corresponding geometric contact elements is realized by means of predetermined molds for the relevant parts of the clamp (102, 202, 600) and the holder (100, 201).
[3]
The knife assembly according to any of the preceding claims, wherein the clamp is constructed such that the geometric clamping elements (115, 215, 615) are spaced apart from the corresponding contact surfaces of the blade (101, 200) in an unclamped state, and that in the clamped state the geometric clamping elements (115, 215, 615) engage the corresponding contact surfaces of the blade (101, 200) with a predetermined clamping force.
[4]
The knife assembly according to any of the preceding claims, wherein said geometric elements (115, 215, 615) are arranged such that in clamped condition an evenly spread clamping force is exerted on the corresponding geometric contact elements of the blade.
[5]
The knife assembly according to any of the preceding claims, wherein the clamp comprises a plurality of fingers, the tips of which form said clamping parts on said clamping line (120, 220) and whose rearward parts together form said geometric clamping elements (115, 215).
[6]
The knife assembly of claim 5, wherein at least some of said geometric clamping elements (115, 215) are planar surfaces and wherein said planar surfaces are defined by inwardly beveled parts of said clamp, preferably of said rearwardly located parts of said fingers, which are adapted to engage with parts of the valleys of the blade (101, 200), and wherein the inwardly bevelled parts (115) preferably have a length of at least 1 mm, preferably at least at most 20 mm, more preferably at most 15 mm, and even more preferably at most 10 mm.
[7]
The knife assembly according to claim 5, wherein the rearward parts comprise side surfaces of said fingers which are adapted to make contact with oblique parts of the blade.
[8]
The knife assembly according to any of the preceding claims, wherein the clamp is shaped such that the clamp, in clamped condition, fits snugly over the blade over its entire width, the fit being such that product particles of the product being cut are prevented , penetrate between the clamp and the blade.
[9]
The knife assembly according to any of the preceding claims, wherein the clamp (102, 202) comprises blocking members (204) adapted to engage on rear edges (108, 205) of the blade (101, 200) such that the blocking members (204) in the clamped state limit the range of movement of the blade (101, 200) on the knife holder (100, 201).
[10]
The knife assembly according to any of the preceding claims, wherein blocking elements (107) are provided which are adapted to engage on the rear edges (108, 205) of the blade (101, 200) such that the blocking elements (107) in the clamped state limit the range of movement of the blade (101, 200) on the holder (100, 201), each of the blocking elements (107) preferably comprising widening portions (109) adapted to be in a predetermined location engaging the rear edges (108, 205) of the blade (101, 200) and being shaped to press it down on the holder (100, 201).
[11]
A cutting system (300) with at least one first knife assembly (301) according to any of claims 1-10, positioned along the periphery of the cutting system (300), for cutting products fed into the cutting system (300) .
[12]
The cutting system (300) according to claim 11, further comprising at least one second knife assembly (302) positioned along the periphery of the cutting system (300) for cutting products fed into the cutting system (300), the cutting system is configured such that products to be cut are moved to their periphery by centrifugal force, the at least one second knife assembly (302) each comprising a blade (400) having a substantially flat shape.
[13]
The cutting system (300) according to claim 12, wherein the first and second knife assemblies (301, 302) are alternately positioned along the periphery of the cutting system (300).
[14]
The cutting system (300) according to claim 11, further comprising at least one second knife assembly (302) according to any of claims 1-10 that is positioned along the periphery of the cutting system (300) for cutting products that are in the cutting system (300) are supplied, the cutting system being configured such that products to be cut are moved to their periphery by centrifugal force, the at least one second knife assembly (302) each comprising a blade (101, 200) having a second serrated shape which is different from that of the at least one first knife assembly (301).
[15]
The cutting system (300) according to claim 14, wherein the first and second knife assemblies (301, 302) are alternately positioned along the periphery of the cutting system (300).

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同族专利:

公开号 | 公开日

BE1022743A1|2016-08-26|

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US10632640B2|2020-04-28|

CN105745053B|2018-03-23|

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US20160288358A1|2016-10-06|

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BE1022746A1|2016-08-29|

US10919172B2|2021-02-16|

JP6538049B2|2019-07-03|

CA2928676A1|2015-05-28|

EP3071379A1|2016-09-28|

PH12016500813A1|2016-07-25|

MX2016006403A|2016-08-01|

US20160288356A1|2016-10-06|

JP2016537213A|2016-12-01|

CN105745053A|2016-07-06|

EP3071380A1|2016-09-28|

EP3071380B1|2020-06-17|

MX2016006405A|2016-08-01|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

US201361907073P| true| 2013-11-21|2013-11-21|

US61/907,073|2013-11-21|

EP61/907,073|2013-11-21|

EP14153723|2014-02-03|

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