Cutting device and a cutting system for cutting food products

Abstract

A cutting device for cutting a food product that is conveyed by a conveyor means. The cutting device includes a first cutting blade and a moving mechanism attached to the first cutting blade for moving the first cutting blade sideways in either direction across the conveyor means, and a control unit. The first cutting blade is adapted to cut at least one incision in the product from one side of the product. The control unit is adapted to control the first cutting blade and the moving mechanism based on image data of the food product, and includes utilizing the image data in instructing the moving mechanism to adjust the position of the first cutting blade across the conveyor means.

Claims

1. A cutting device for cutting a food product that is conveyed by a conveyor means, the cutting device comprising: a first cutting blade; a moving mechanism attached to said first cutting blade for moving the first cutting blade sideways in either direction across the conveyor means; and a control unit; wherein said first cutting blade is adapted to cut at least one incision in the product from one side of the product; wherein said control unit is adapted to control said first cutting blade and said moving mechanism based on image data of said food product, including utilizing said image data in instructing said moving mechanism to adjust the position of said first cutting blade across said conveyor means; wherein the cutting device further comprises a second cutting blade adapted to cut at least one incision in the product from a side opposite to the side of the first cutting blade, and where the control unit is further adapted to control the second cutting blade.

2. The cutting device according to claim 1, wherein said food product has, prior to being cut with one or more incisions, undergone a cutting process where at least one cut of the food product has been performed having an angle in relation to an axis extending across the conveyor and perpendicular to the conveying direction, where the adjustment of the moving mechanism comprises adjusting the position of at least said first cutting blade across said conveyor means such that it follows said at least one cut of the food product.

3. The cutting device according to claim 1, wherein said second cutting blade is further attached to said moving mechanism such that both the first and the second cutting blades are moved sideways in either direction across the conveyor means while the internal position of said first and second cutting blades are maintained fixed.

4. A cutting device according to claim 1, wherein the controlling by said control unit further comprises operating the first and the second cutting blades independently.

5. The cutting device according to claim 1, wherein said first and said second cutting blades are arranged within the same plane such that the cutting plane is substantially the same, where a distal end of said first cutting blade and a distal end of said second cutting blade, when said distal ends are facing each other, overlap partly.

6. The cutting device according to claim 5, wherein the rotational movement of the first and the second cutting blades is adjusted such that a phase shift of the first and the second cutting blades is present so as to avoid collision of the first and the second cutting blades when the cutting blades simultaneously are in a horizontal position and facing each other.

7. A method of cutting a food product conveyed by a conveyor means into pieces using a cutting device which comprises: a first cutting blade; a moving mechanism attached to said first cutting blade for moving the first cutting blade sideways in either direction across the conveyor means; and a control unit; wherein said first cutting blade is adapted to cut at least one incision in the food product from one side of the product; wherein said control unit is adapted to control said first cutting blade and said moving mechanism based on image data of said food product, including utilizing said image data in instructing said moving mechanism to adjust the position of said first cutting blade across said conveyor means; wherein the cutting device further comprises a second cutting blade adapted to cut at least one incision in the product from a side opposite to the side of the first cutting blade, and where the control unit is further adapted to control the second cutting blade.

8. The method according to claim 7, wherein said food product has, prior to being cut with one or more incisions, undergone a cutting process where at least one cut of the food product has been performed having an angle in relation to an axis extending across the conveyor and perpendicular to the conveying direction, where the adjustment of the moving mechanism comprises adjusting the position of at least said first cutting blade across said conveyor means such that it follows said at least one cut of the food product.

9. The method according to claim 7, wherein the food products are fish fillets and where the at least one cut includes cuts around the pin bones in the fish fillet.

10. The method according to claim 9, wherein the at least one cut further includes a cut extending along the fish fillet from the pin bones and at least partly towards the tail part of the fish fillet.

11. The method according to claim 7, wherein cutting the food product comprises cutting pieces of food products or cutting the food product with parts between the incisions to have a fixed target such as a fixed weight target.

12. A cutting system for cutting a food product conveyed by a conveyor means, comprising: an imaging system; a cutting device comprising: a first cutting blade; a moving mechanism attached to said first cutting blade for moving the first cutting blade sideways in either direction across the conveyor means; a control unit; wherein said first cutting blade is adapted to cut at least one incision in the product from one side of the product; wherein said control unit is adapted to control said first cutting blade and said moving mechanism based on image data of said food product, including utilizing said image data in instructing said moving mechanism to adjust the position of said first cutting blade across said conveyor means; wherein the cutting system further comprises: a second cutting blade adapted to cut at least one incision in the product from a side opposite to the side of the first cutting blade, and where the control unit is further adapted to control the second cutting blade; a cutting mechanism operated by the control unit for performing at least one cut of the food product having an angle in relation to an axis extending across the conveyor and perpendicular to the conveying direction, where the adjustment of the moving mechanism comprises adjusting the position of at least said first cutting blade across said conveyor means such that it follows said at least one cut of the food product.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Embodiments of the invention will be described, by way of example only, with reference to the drawings, in which

(2) FIG. 1 depicts a cutting device according to the present invention for cutting a food product conveyed by a conveyor means into pieces,

(3) FIG. 2 shows a zoomed out view of FIG. 1, showing in more details the conveyor means where the at least one cutting process takes place,

(4) FIG. 3 shows a cutting system according to the present invention,

(5) FIGS. 4-8 depict graphically examples of cuts that a fish fillet has undergone,

(6) FIG. 9 shows a schematic zoomed up view of FIG. 1,

(7) FIGS. 10 and 11 show a downstream view and an upstream view of a cutting device according to the present invention, and

(8) FIG. 12 shows a schematic view seen from e.g. the upstream end of a cutting device having a single cutting blade according to an embodiment of the present invention.

DESCRIPTION OF EMBODIMENTS

(9) FIG. 1 depicts a cutting device 100 according to the present invention for cutting a food product 111 conveyed by a conveyor means 110 in a direction as indicated by arrow 123. The view of the cutting device shown in this embodiment is a view seen from the upstream end of the cutting device (a front view) where the cutting device 100 comprises a first cutting blade 101, a second cutting blade 102, a moving mechanism and a control unit 104. The present invention should not be construed as being limited to two cutting blades, but a single cutting blade may just as well be implemented.

(10) The moving mechanism comprises a frame structure 120 that is slideable attached to parallel tracks 103a,b or similar means such as any type of track means, and where the first and the second cutting blades 101, 102 are, as shown here, rotatable cutting blades that are rigidly attached to frame structure 120 such that the internal distance between the rotational axis 124, 125 of the first and the second cutting blades 101, 102 is fixed at all times having a clockwise 130 and counterclockwise 131 rotational direction. The first and the second cutting blades 101, 102 are typically also associated with a motor (not shown here), respectively, on the distal side of the frame structure 120, where the frame structure 120 must thus also carry the motors. Accordingly, the back and forth movement of the cutting blades 101, 102 as indicated by the arrow 112 is thus achieved via back and forth movement of the frame structure 120.

(11) The frame structure 120 further comprises an opening 126 arranged such that the conveyor means 110 which conveys the food product 111, and a conveyor means 127 that receives the food product after undergoing the cutting process with the first and the second cutting blades 101, 102, are substantially within the same height level within the opening. To ensure that neither of the conveyor means 110 and 127 become damaged, it is of course ensured that the cutting plane of the first and the second cutting blades 101, 102 lies within the space between two conveyor means 110, 127.

(12) For further clarification, FIG. 9 shows a schematic zoomed up view of the opening 126 and a position of the conveyors 110, 127 in relation to the opening. Due to the back and forth movement of the frame structure 120 a sufficient side space 901, 902, must be provided between the opening 126 and the conveyors 110, 127 so as to ensure that the frame structure 120 does not collide with the conveyors 110, 127 during the back and forth movement as indicated by the arrow 112. Thus, the width or in general the dimension of the opening is preferably designed with respect to the width of the conveyors and or the size/shape of the food product 111.

(13) Although not necessary for the embodiment shown here, the frame structure 120 may comprise circular and side by side arranged shaped recessions comprising inner deeper recessions 121b, 122b (or grooves) and outer shallower recessions 121a, 122a in the frame 120 structure, where the outer recessions 121a, 122a have a diameter substantially the same or slightly larger than the diameter of the cutting path of the respective one of the first and the second cutting blades 101, 102. The center of the each of the side by side arranged recessions 121, 122 comprises an opening (not shown there) in the center of the recessions through which the rotation axis of the respective one of the first and the second cutting blades 101, 102 extend.

(14) Although the first and the second cutting blades 101, 102 are shown here as being fully exposed and facing the conveyor 110, which may also be considered as being an infeed conveyor, the cutting blade side may as will be discussed later in relation to FIGS. 10 and 11 be facing conveyor 127, which may also be considered as a take-away conveyor.

(15) Moreover, a shield or similar means (not shown) may be provided in front of the first and the second cutting blades 101, 102 to ensure safety of the operator operating the cutting device.

(16) The control unit is adapted to move the frame structure back and forth as indicated by arrow 112 and thus move the cutting blades sideways in either direction across the conveyor means sideways in either direction across the conveyor means, while maintaining their internal position fixed, i.e. the distance between the rotational axis of the first and the second cutting blades are fixed.

(17) Both the first and the second cutting blades 101, 102 are adapted to cut an incision in the product from opposite sides of the food product and the control unit 104 is preferably also adapted to control the first 101, and the second 102 cutting blades independently meaning e.g. that one cutting blade may be performing a cut while the other one is not.

(18) The food product may in one embodiment, prior to being cut into pieces that are separated from the food product or cut by incisions into parts that are not yet separated from the food product, undergo a cutting process by a cutting means 106, 107, which may be a high pressure water cutter, where at least one cut of the food product has been performed. As will be discussed in more details later, the assumption is made that the food product has undergone a cutting process, e.g. by a high pressured water cutter or any other cutting means, and where the cut by the first and the second cutting blades results in a number of pieces that are separated from the food product.

(19) In case the food product is fish fillet such as cod fillet, the at least one cut may be a cut around the pin bones and may also include a further cut extending from the pin bones towards the tail part of the fish fillet. This cut has an angle in relation to an axis extending across the conveyor and perpendicular to the conveying direction.

(20) The above mentioned controlling of the moving mechanism 103a,b is preferably based on image data 105 that include position related data indicating the position of the at least one cut, e.g. around the pin bones, and where this position related data 105 are utilized as an operation parameter by the control unit 104 for controlling the back and forth placement of the moving mechanism as indicated by arrow 112.

(21) As shown here, the cutting means 106, 107 used for performing the at least one cut, are positioned above gaps 113, 114, respectively, formed between adjacent elongated supporting means 116a,b, 115a,b, respectively, with a fixed internal arrangement. The adjacent elongated supporting means and the cutters 106, 107 which could just as well be a single cutter or more than two cutters, is connected to a control mechanism (not shown) for operating back and forth movement of the adjacent elongated supporting means 116a,b, 115a,b and for operating the cutters 106, 107 across the conveyor 110 perpendicular to the conveying direction while maintaining said internal arrangement of the adjacent elongated supporting means and the cutter fixed.

(22) The first and said second cutting blades 101, 102 are as shown arranged within the same plane such that the cutting plane is substantially the same. Moreover, the dimension of the blades is preferably such that a distal end 108 of the first cutting blade and a distal end 109 of the second cutting blade, when the distal ends are facing each other, overlap partly. This is to ensure that a cut across the whole food product is possible. Also, to avoid that the cutting blades 101, 102 will come in contact with each other, it is preferred that the cutting blades are adjusted such that when the first and second distal ends 108, 109 are substantially horizontal and are pointing towards each other, one of the distal ends is positioned slightly above the other distal end. Or put in other words, the rotational movement of the first and the second cutting blades is adjusted such that a phase shift of the first and the second cutting blades is present so as to avoid that the blades collide when the cutting blades are simultaneously in a horizontal position and facing each other.

(23) FIG. 2 shows a zoomed out view of FIG. 1, showing in more details the conveyor means where the at least one cut process takes place.

(24) The food product may be, but is not limited to, a fish fillet such as a cod fillet and where the at least one cut performed by the cutting means 106, 107 may be a cut around the pin bone areas of the cod and where a further cut or cuts may be performed including e.g. a cut extending from the pin bone area towards the tail part of the cod. The cutting means 106, 107 may just as well be based on using a single cutting means (not shown) or two or more cutting means.

(25) The data that operate the cutting means 106, 107 may be X-ray data that originate from an X-ray source (not shown) that depict the bone structure within the food product (the fish fillet).

(26) FIG. 3 shows a cutting system 300 according to the present invention comprising a cutting apparatus 301 such as the one disclosed in WO2013132068, hereby incorporated in its entirety by reference, comprising at least one conveyor belt 302, a cutter arranged above a gap (see e.g. FIGS. 1 and 2) extending across said at least one conveyor belt where the cutter is positioned in relation to the gap such that the cutting path of the cutter extends through the food products and the gap and below the surface level of said at least one conveyor belt. The cutter is adapted to be connected to a control mechanism for operating crosswise movement of the cutter along said gap. The cutter and the gap may be similar or identical to the one shown in FIGS. 1 and 2. Also, as disclosed in WO2013132068, the gap may be formed by a single conveyor belt as shown in FIGS. 1 and 2, or via two or more conveyors that are placed adjacent to each other.

(27) FIG. 4 depicts graphically an example of cuts and incisions in a fish fillet 400 that has undergone a cutting process in e.g. the cutting apparatus 301 shown in FIG. 3, where said at least one cut includes cuts around the pin bone area 401 where the loin 403 and the belly 402 and the tail part 404 have been separated from the pin bones 401.

(28) FIGS. 5 and 6 depict an example where the fish fillet has undergone a cutting process by the cutting device 100 according to the present invention, where in FIG. 5 the loin has been cut into three pieces 501-503, i.e. by incisions 508-510 from the loin side and a cut 507 essentially in the longitudinal direction, the belly part has been cut into two pieces 505, 506, i.e. by incisions 511, 512 from the belly side and the cut 507 essentially in the longitudinal direction and the tail is a single piece 504, which is produced by the two incisions 508 and 511 being cut in the fish fillet from each side. In FIG. 6 the loin has in a similar manner been cut into two pieces 601, 602 by the incisions 605, 606, the belly 603 is a single piece and also the tail part 604 is a single piece, provided via the incisions 605.

(29) FIG. 7 depicts graphically a further example of cuts and incisions in a fish fillet that has undergone a cutting process in a cutting apparatus according to an embodiment of the invention. Here, the fish fillet has been cut on both sides of the pin bone area and by a cut 704 essentially in the longitudinal direction, which terminates at the loin side of the fish fillet. Further, two incisions 701, 702 have been made from the belly side at both ends of a belly part 703 and resulting in two belly parts, one loin part and one tail part. All or almost all of these parts may have been produced to fulfill a pre-defined target criterion or target criteria.

(30) FIG. 8 depicts graphically an even further example of cuts and incisions in a fish fillet that has undergone a cutting process in a cutting apparatus according to an embodiment of the invention. Here, the fish fillet has been cut on both sides of the pin bone area and by a cut 807 essentially in the longitudinal direction, which terminates a distance from the tail. Further, two incisions 801 have been made from the belly side at both ends of a belly part 803, two incisions 804, 805 have been made from the loin side at both ends of a loin part 806, resulting in total in two belly parts, two loin part and one tail part. All or almost all of these parts may have been produced to fulfill a pre-defined target criterion or target criteria.

(31) As it will be understood, the incisions from the sides of the fish fillets shown in FIGS. 4-8 may be cut before the at least one cut in the essentially longitudinal direction is being made or vice versa, as it has been explained above.

(32) FIG. 10 shows a view seen from the downstream end of a cutting device 1000 according to the present invention for cutting a food product conveyed by a conveyor means 1100 in a direction as indicated by arrow 1230 from a conveyor means 1100, and FIG. 11 shows a view seen from the upstream end of the cutting device in FIG. 10, where the cutting device in FIGS. 10 and 11 is more or less similar as discussed in relation to FIGS. 1 and 2.

(33) The cutting device comprises, similarly as discussed in relation to FIGS. 1 and 2, a first and the second cutting blades 1010, 1020 and a frame structure 1200 that is slideable mounted to at least one rail or track 1200 for supporting the first and the second cutting blades 1010, 1020 in a similar way as discussed in relation to FIGS. 1 and 2, and where a motor 1001 controlled by a control unit moves the frame structure 1200 and thus the first and the second cutting blades 1010, 1020 in a back and forth movement, similar as already described.

(34) As also discussed, the food product undergoes one or more cutting processes, e.g. as discussed previously e.g. with one or more high pressure water jets, and where a conveyor means 1270 receives the cut food product, and thus acts in a way as a take-away conveyor. The cut food product may e.g. be cut similar as discussed in any of the FIGS. 4-8.

(35) The essential difference between the cutting device 1000 shown in FIGS. 10 and 11 and the one shown in FIGS. 1-3 is however the arrangement of the first and the second cutting blades 1010, 1020 and a frame structure 1200, which has been mirrored compared to what FIGS. 1 and 2 shows, i.e. the first and the second cutting blades 1010, 1020 are facing the conveyor means 1270.

(36) Moreover, the embodiment shown here further comprise a shield or a cover 1002 for the first and the second cutting blades 1010, 1020, which may also be considered as a guide for first and the second cutting blades 1010, 1020.

(37) FIG. 12 shows a schematic view seen from e.g. the upstream end of a cutting device 2100 according to an embodiment of the present invention for cutting a food product 111 conveyed by a conveyor means 2110, which cutting device 2100 comprises a single cutting blade 2101, i.e. a first cutting blade only. The cutting device shown in FIG. 12 is otherwise more or less similar to the devices as discussed in relation to FIGS. 1, 2, 10 and/or 11.

(38) Thus, the cutting device 2100 comprises a frame structure 2120 that is slideable attached to e.g. a pair of parallel tracks 2130a and 2130b, on which it is movable back and forth by means of drive means (not shown in FIG. 12). The cutting blade 2101 is rotatably arranged in the frame structure 2120, where the frame structure 2120 may be designed in a manner similar to the frame structure shown in e.g. FIG. 1, i.e. with circular recessions 2121a and 2121b. The inner recession 2121b is a deeper recession and the outer recession 2121a is a shallower recession, where the latter has a diameter substantially the same or slightly larger than the rotation diameter of the cutting blade 2101. Further, a shield or similar means (not shown in FIG. 12) may be arranged in front of the cutting blade 2101, e.g. a shield having an extent corresponding to the recession 2121a and possibly part of the recession 2121b, to ensure safety of the operator operating the cutting device 2100.

(39) The frame structure 2120 comprises an opening 2126, which is arranged such that the food products 111 and conveyor means for the food products 111 do not interfere with the frame structure during the back and forth movement of the frame structure 2120 and during the conveying and cutting of the food products 111. The respective conveyor means for the food products 111 in the area of the opening 2126 comprises the conveyor 2110 as shown in FIG. 12 for conveying the food products 111 to the cutting device and a receiving conveyor (not shown in FIG. 12) for the cut food products, which conveyors are arranged substantially at the same level within the opening and with a gap between the conveyor ends, which is sufficiently large for the cutting blade 2101 to pass through.

(40) The single cutting blade 2101 is as mentioned rotatably arranged as indicated with the arrow 2130, and a drive motor 2200 may be arranged at the frame structure 2120 for operating the cutting blade 2101. The cutting blade 2101 is adapted for cutting an incision in the food product 111 from the side of the product, controlled by a control unit (not shown in FIG. 12) and based on e.g. image data including position related data (cf. e.g. FIG. 1). The control unit may further be adapted for controlling the back and forth movement of the frame structure.

(41) Thus, for cutting an incision in the food product 111 from one side of the product, data is supplied to the control unit relating to e.g. the position of the food product 111 on the conveyor 2110 and e.g. the shape of the food product and the conveying speed, the position of the intended incision along the length of the food product in the conveying direction and the intended length of the incision in the food product.

(42) Based on these data, the frame structure 2120 is controlled by the control unit to adjust its position across the conveyor means to correspond to the intended length of the incision in the food product and the cutting blade 2101 is controlled to, operated by the drive motor 2200, to cut the incision in the food product 111 at a time corresponding to the position of the intended incision along the length of the food product 111 in the conveying direction.

(43) As explained in connection with other embodiments, further cuts may be made in addition to the one or more incisions made from one side of the food product 111 such as e.g. cuts made essentially in the longitudinal direction of the food product, for example cuts made prior to the cut(s) made by the cutting device 2100 or subsequently to the cut(s) made by the cutting device 2100, e.g. cuts made by a high pressure water jet cutter or the like.

(44) While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive; the invention is not limited to the disclosed embodiments. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word comprising does not exclude other elements or steps, and the indefinite article a or an does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.