DK180499B1 - Portion cutting of meat products - Google Patents

Portion cutting of meat products Download PDF

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Publication number
DK180499B1
DK180499B1 DKPA201901357A DKPA201901357A DK180499B1 DK 180499 B1 DK180499 B1 DK 180499B1 DK PA201901357 A DKPA201901357 A DK PA201901357A DK PA201901357 A DKPA201901357 A DK PA201901357A DK 180499 B1 DK180499 B1 DK 180499B1
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DK
Denmark
Prior art keywords
meat
cutting
meat product
product
scanning
Prior art date
Application number
DKPA201901357A
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Danish (da)
Inventor
Bager Christensen Lars
Toftelund Madsen Niels
Ryding Ole
Bradnorg Nielsen Dennis
Vibeke Olesen Eli
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Teknologisk Inst
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Priority to DKPA201901357A priority Critical patent/DK180499B1/en
Publication of DK201901357A1 publication Critical patent/DK201901357A1/en
Application granted granted Critical
Publication of DK180499B1 publication Critical patent/DK180499B1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C17/00—Other devices for processing meat or bones
    • A22C17/0073—Other devices for processing meat or bones using visual recognition, X-rays, ultrasounds, or other contactless means to determine quality or size of portioned meat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/007—Control means comprising cameras, vision or image processing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting

Abstract

This invention relates to a system and a method for automatic and intelligent decision making when portioning food products. More specifically, the invention provides a system for CT scanning of larger pieces of meat, before cutting into smaller portions considering the substance, quality, and value of the starting material.

Description

DK 180499 B1 1
PORTION CUTTING OF MEAT PRODUCTS
TECHNICAL FIELD This invention relates to a system and a method for automatic and intelligent decision making when portioning food products. More specifically, the invention provides a system for CT scanning of larger pieces of meat, before cutting into smaller portions considering the substance, quality, and value of the starting material.
BACKGROUND ART Food products, and in particular meat products, are typically split or otherwise cut into smaller units or portions, whether of uniform or specific sizes, weight, thickness, or other specifications, according to customer needs.
WO2002007937, US2006156878, US2006161380 and US2006162515 describe portioning stations comprising scanning stations based on existing scanning techniques, including video cameras and x-rays equipment; WO2004034794 describes a portion cutting apparatus comprising a scanning station adapted to perform a 360” scanning of the food piece based on vision system, such as a ring scanner; US2004200365 describes a system for slicing food products having a non-uniform cross-sectional area, which system includes the use of a laser line scanner and a line scan camera to determine an area of the cut face of the food product; WO2004106020 describes an apparatus for portion cutting of food articles, which apparatus comprises scanning means comprising ultrasonic and/or X-ray sensor; WO2005079588 describes a system for increasing the capacity and precision of a portion cutter, which systems comprises a computer vision scanning function, e.g. a ring scanner; WO2007022782 describes a system for cutting meat items by use of laser vision equipment, X-ray equipment, ultrasonic equipment or similar measuring/scanning equipment; US2009143886 describes a system for portioning food products according to customers need, which system comprises the use of camera vision technique; EP2251158 describes an apparatus for cutting food products into portions, which system includes a sensing arrangement comprising e.g. a visible and/or non-visible light detection arrangement, an x-ray analysis arrangement, an MRI arrangement; or an ultrasound analysis arrangement;
DK 180499 B1 2 WO2010083838 and EP2210495 both describe an apparatus for removing or trimming fat from meat cuts, wherein a distinctive “knife tool” cuts a layer of fat (and possibly skin) from the face of these meat cuts; US2012073415 and US2013133490 describe an apparatus for slicing a block of food into portions of precise weight, which apparatus comprises a scanning station based on the use of an irradiation scanner, preferably an X-ray scanner; US2012198974 describes a method for acquiring slices or portions of slices of constant weight from food products, which method comprises e.g. the use of one or more vision or ultrasound scanning heads pivotable about the product., or, alternatively, the use of laser scanners; US2014083268 describes a food processing apparatus comprising a scanning unit for determining properties of the food product, which scanning unit is based on the use of an irradiation scanner, e.g. an X-ray scanner; WO2014169925 describes a food cutting apparatus which apparatus involves the use of an image device such as a scanning device, e.g. laser vision equipment, X-ray equipment, ultrasonic equipment or similar measuring/scanning equipment; US2015321369 describes a multi-type food processing device comprising the use of X-ray equipment; WO2016045683 describes a method for automatically cutting a meat product, e.g. beef tenderloin, which method is based on the use of image data; WO2018022598 describes a cutting/ portioning station using combined X-ray and optical scanning techniques; and US2018143607 describes a system for automatic portioning of food products, comprising a scanning station using existing scanning techniques, including video cameras and x-rays equipment.
These food-portioning systems all involve the use of existing 2D-imaging techniques.
In contrast, WO2006108690 describes a system for determining spatial/3D quality characteristic of food products, and the use of this system for producing food- portions of a desired weight, which system comprises the use of magnetic resonance imaging (MRI) data.
MRI technology is based on activation of water molecules by magnetic resonance, which process is relatively slow compared to e.g. an x-ray CT-scanner. Moreover, bones and fat tissue contain roughly the same amount of water, making it more difficult to discern between these components in meat items using MRI technology.
WO2006128456, WO2017191162 and WO2017191163 describe CT-scanners for industrial use, e.g. at abattoirs for scanning animal carcasses or cuttings hereof.
DK 180499 B1 3 However, the use of CT-technology for assisting portion cutting of meat products has never been suggested.
SUMMARY OF THE INVENTION It has now been found that the use of CT-scanning techniques offers distinct possibilities when applied in meat cutting and portioning procedures. CT-scanning is a rapid technology with good capabilities for distinguishing between the various elements present in meat items, including bones and fat tissue, and it offers full 3-dimensional (3D) resolution of the object to be processed.
The general problem of food workpiece portioning is to fit acceptable or desired portions into highly variable workpieces and then cutting them, and at the same time utilize as much of the food workpieces as possible, achieving best value. The meat items to be processed typically vary in every dimension, have random defects, and have areas of fat and cartilage that often must be avoided. The thickness varies throughout each workpiece in addition to the average thickness varying from workpiece to workpiece.
Weight optimization and limited waste, off course, gives better operating economy. CT-technology allows for making a more optimal analysis of the meat object, for establishing the maximal utilisation of the food object. CT-technology, for instance, is particularly ideal for cutting e.g. beef from tenderloin or strip loin, to meet specific weight requirements, and for determining precisely when it is better to continue/stop cutting the steaks, or if the meat portion becomes too small, so that the rest may be used for e.g. roast.
In its first aspect, the invention provides a system for portion slicing of a larger meat product into smaller portions, characterised by comprising the following elements: one or more conveyor belts; a CT-scanning station; a portioning device; and a processing means (5), as described in claim 1.
In another aspect the invention provides a method for automatic portion slicing of a larger meat product into smaller portions, which method involves use of the system of the invention, and which method is described in claim 6.
Other objects of the invention will be apparent to the person skilled in the art from reading the following detailed description and accompanying drawings.
Any combination of two or more of the embodiments described herein is considered within the scope of the present invention.
DK 180499 B1 4
DETAILED DISCLOSURE OF THE INVENTION The present invention provides a system for automatically portioning and cutting larger pieces of meat into smaller portions considering the substance and the quality of the starting material, and in view of the customer needs, and the invention also provides a method for use of this system for automatically portioning meat products.
The system and method of the invention are in particularly suited for slicing food products having a non-uniform cross-sectional area and allow division of such food products into separate portions of a pre-determined portion yield.
The system of the invention In its first aspect, the invention provides a system for automatically cutting larger pieces of meat into smaller portions considering the substance and the quality of the starting material and considering the needs of the customer.
The meat portioning system of the invention may be characterised by comprising the following elements: e One or more conveyor belts (2); e a CT-scanning station (3); e a portioning device (4); and e a processing means (5). The conveyor The system of the invention comprises one or more conveyor belts (2) for supply of the meat products (6) through a CT-scanning station (3), and for transport of the scanned meat product to the cutting station (4).
The conveyor belts (2) for use according to the invention shall be operatively linked to, and capable of receiving feed-back from, the processing means (5).
In one embodiment, the system of the invention comprises an in-feed or in-let conveyor belt (2A) for supply the food products (6) to be CT-scanned, which in-let conveyor is capable of continuously transporting products through the tube of the CT- scanner (3). The in-let conveyor (2A) may also be able to transport the scanned meat product all the way to the cutting station (4).
It should be intended that the food products arrive evenly distributed on the conveyor belt, so distinction between products is possible for the subsequent portioning.
In another embodiment, the system of the invention also comprises an out-let conveyor belt (2B) for transport of the scanned and subsequently divided meat product (6) to the different sorting groups requested.
DK 180499 B1 For the processing means (5) to be able to calculate and track the position of the incoming food product while in motion, and to keep the cutting station (4) synchronized with the conveyor belt (2), the system need to know the speed of the conveyor belts (2). This may be accomplished in various ways.
5 The in-let conveyor belt (2A) for use according to the invention may be equipped with an encoder, in communication with, the processing means (5). This ensures that the system can perform certain functions, like controlling (i.e. determine and adjust) the speed of the conveyor belt and synchronize with the cutting means (4).
There are four widely used methods for applying encoders to conveyors: motor mount, roller shaft mount (rotary encoder), belt/chain driven and surface mount. Any type of encoder may be employed according to the invention. The CT-scanning station The system of the invention comprises a CT-scanning station (3), operatively linked to, and in communication with, the processing station (5) of the invention.
In the system of the invention, the incoming meat product (6) is subjected to a computer tomography (CT) scanning, while conveyed on the in-let conveyor (2A), i.e. while on the fly. For such use, a high capacity, industrial CT-scanner suited for continuous (on-line) product transport should be employed. Such industrial CT-scanners are known from e.g. WO2006128456, WO2017191162 and WO2017191163, and are commercially available from Teknologisk Institut, DMRI, Denmark.
In the CT-scanning station (3), the workpieces are scanned to ascertain selected physical parameters, e.g. their size and shape, and then to determine their weight. CT- scanners are capable of determining the internal structure of the scanned product, e.g.
the distribution of muscles, fat, cartilage, etc. within the meat pieces.
The data and information obtained by the CT-scanning station (3) are subsequently transmitted to the processing means (5), along with an ID for the specific position obtained in collaboration with e.g. an encoder, mounted on the in-let conveyor. The processing means will then analyse the meat piece as a stack of thin slices, to decide where and how to cut in the optimal way. The cutting station The system of the invention comprises one or more portioning devices/cutting stations (4), each station comprising cutting means, and being operatively linked to, and in communication with, the processing means (5).
In the cutting station (4) for use according to the invention, the incoming meat product (6) is cut-up into portions, and the term "portion" is the term often used for the small pieces of meat.
DK 180499 B1 6 The physical division of the meat product (6) taking place at the cutting station (4), may be accomplished by conventional cutting means, and may include the use of a knife or “sword”, a rotating blade portioner/circular saw, or by use of a high-pressure waterjet cutter, including highspeed liquid jet cutters (liquids may include, for example, water or liquid nitrogen) or rotary or reciprocating blades, after the food product is transferred from the infeed to a cutting conveyor.
Portion cutting usually takes place when the workpiece approaches a gap between to conveyors (e.g. the gap between 2A and 2B), and the spot at which the piece of meat is to be cut is positioned immediately over the gap.
Once the portioning/trimming has occurred, the resulting portions may be off- loaded from the actual conveyor and, based on the outcome of the CT-scanning analysis, the resulting meat pieces may be transferred (via one or more additional conveyors) to various working stations, or may be placed on an out-let conveyor (2B) for further processing or, perhaps, to be placed in a storage bin.
The processing means The processing means (5) for use according to the invention may be any commercially available processor/PC, in operation with, and capable of receiving and processing data obtained i.a. from the one or more conveyors (2) of the system (1), the CT-scanning station (3), and the cutting station (4).
The processing means (5) for use according to the invention shall be operatively linked to the conveyor belts (2), the CT-scanning station (3), and the cutting station (4), used in the system of the invention.
In one embodiment, the processing means (5) is in communication with the in- let conveyor (2A), and determines and adjusts, e.g. in communication with an encoder associated with the conveyor, the speed by which the inlet conveyor (2A) transports the incoming workpiece (6).
In another embodiment, the processing means (5) records the location of the workpiece (6) on the conveyor (2), as well as the selected physical parameters of the workpiece obtained from the CT-scanning station (3). With this information, the processing means (5) determines how to optimally cut or portion the workpiece (6) at the cutting station (4), e.g. in view of the different requirement made by the particular product recipes included in the production.
The processing means (5) for use according to the invention shall be able to calculate the optimal cutting line, e.g. by taking into account the actual product recipe in question, the nature of the meat product in question, as well as e.g. bones, sinews, price, delivery plan and the like, relevant for the optimal utilization at the moment in time.
DK 180499 B1 7 The meat product The meat products (6) applied to the system and the method of this invention may be any (expensive) workpiece where optimal utilization depends on characteristics not easily determinable from surface inspection alone.
Workpieces/meat product (6) subjected to the method of the invention may in particular be the more expensive meat cuts, whether from beef, pork, lamb or poultry, and whether containing bones or not.
Examples of workpieces contemplated subjected to the method of the invention include e.g. beef tenderloin, long loin, short loin, strip loin, full rib (bone or boneless), entrecote, cube; pork loin; lamb chops, cutlets; and chicken breast. The method of the invention In another aspect, the invention relates to a method for automatic slicing cutting of larger meat products into smaller portions. The method of the invention allows for division of food products into separate portions, and for pre-determining of the portion yield. The method also is good for slicing a food product having a non-uniform cross- sectional area, and for slicing meat products into portions (3) of precise weight. The method of the invention may be characterised by comprising the subsequent steps of: a) providing the meat product to be cut (6) via an in-let conveyor (2A); b) scanning the incoming meat product (6) in a CT-scanning station (3), and obtaining 3D data derived from (the inside of) the meat product (6); ¢) transmitting the 3D data obtained in step b to a processing means (5) for computing and calculating the optimal cutting lines/cutting pattern, optionally as determined or prescribed by a product recipe; d) conveying the meat product (6) to a portioning device (4), wherein the product is placed in a position for being cut; e) cutting/portioning the meat product (6) into smaller portions accomplished by the portioning device (4); f) sorting of the resulting meat pieces into (uniform) streams of products for further distribution/processing; and (f) automatically un-loading portioned meat product (6) (i.e. end product) from the conveyor (2).
DK 180499 B1 8
BRIEF DESCRIPTION OF THE DRAWINGS The present invention is further illustrated by reference to the accompanying drawing, in which: Fig. 1 shows the essential elements of the system (1) of the invention: in-let conveyor (2A), outlet conveyor (2B); CT-scanning station (3); cutting station (4); processing means (5); and meat product (6); and Figs. 2A and 2B show examples of out-puts (CT images) from the CT-scanning process: slices (scans) showing the contour of an in-coming meat product, for assisting the optimal cutting of the meat product in question, detailing the characteristics of each voxel (cube) in the piece. List of reference signs In this application the following reference numbers are used:
1. Meat portioning system
2. Conveyor 2A. In-let conveyor 2B. Out-let conveyor
3. CT-scanning station
4. Portioning device/cutting station
5. Processing means/CPU/PC
6. Workpiece/meat product

Claims (7)

DK 180499 B1 1 PatentkravDK 180499 B1 1 Patent claim 1. Et system (1) til udskæring af et større kødprodukt (6) i mindre portioner, hvilket system omfatter følgende elementer: eo et eller flere transportbånd (2) til levering af kødprodukterne (6) gennem en CT-scanningsstation (3), og til transport af de scannede kødprodukter (6) til opskæringsstationen (4); e en CT-scanningsstation (3) til scanning af det indkommende kødprodukt (6); e en portionerings-indretning (4) til fysisk opdeling af kødproduktet (6); og e et proces-behandlingsmiddel (5) til bestemmelse af den indvendige struktur af det scannede produkt, hvilket proces-behandlingsmiddel (5) er operativt forbundet til, og i kommunikation med, transportbdndene (2), CT-scanningsstationen (3), og portionerings-indretningen (4); kendetegnet ved, at kødprodukterne (6), i CT-scanningsstationen (3), scannes for at fastslå udvalgte fysiske parametre, og proces-behandlingsmidlet (5) bestemmer hvordan kødproduktet (6) skal opskæres eller deles optimalt, og beregner de optimale skærelinjer, og portionerings-indretningen (4) skærer det indkommende kødprodukt (6) op i portioner.A system (1) for cutting a larger meat product (6) into smaller portions, which system comprises the following elements: eo one or more conveyor belts (2) for delivering the meat products (6) through a CT scanning station (3), and for transporting the scanned meat products (6) to the cutting station (4); e a CT scanning station (3) for scanning the incoming meat product (6); a portioning device (4) for physically dividing the meat product (6); and a process processing means (5) for determining the internal structure of the scanned product, which process processing means (5) is operatively connected to, and in communication with, the conveyor belts (2), the CT scanning station (3), and the portioning device (4); characterized in that the meat products (6), in the CT scanning station (3), are scanned to determine selected physical parameters, and the process processing means (5) determines how the meat product (6) is to be cut or divided optimally, and calculates the optimal cutting lines, and the portioning device (4) cuts the incoming meat product (6) into portions. 2. Systemet ifølge krav 1, hvor det ene eller flere transportbånd omfatter et tilførsels-transportbånd (2A) og et udlednings-transportbånd (2B), hvor hver transportør er operativt forbundet til, og i stand til at modtage tilbagemelding fra, proces- behandlingsmidlet (5).The system of claim 1, wherein the one or more conveyor belts comprise a supply conveyor belt (2A) and an discharge conveyor belt (2B), each conveyor being operatively connected to, and capable of receiving feedback from, the process processing means. (5). 3. Systemet ifølge krav 1, hvor CT-scanningsstationen (3) omfatter en industriel CT-scanner, som er operativt forbundet til, og i kommunikation med, proces- behandlingsmidlet (5).The system of claim 1, wherein the CT scanning station (3) comprises an industrial CT scanner operatively connected to, and in communication with, the process processing means (5). 4. Systemet ifølge krav 1, hvor proces-behandlingsmidlet (5) er en kommercielt tilgængelig processor/PC, som er i drift med, og i stand til at modtage og behandle data opnået fra, det ene eller flere transportbånd (2), CT-scanningsstationen (3), og portionerings-indretningen (4).The system according to claim 1, wherein the process processing means (5) is a commercially available processor / PC which is in operation with, and capable of receiving and processing data obtained from, the one or more conveyor belts (2), CT the scanning station (3) and the portioning device (4). 5. Systemet ifølge krav 1, hvori den fysiske opdeling af kødproduktet (6), som er opnået ved portionerings-indretningen (4), opnås ved hjælp af konventionelle skæreindretninger, f.eks. ved anvendelse af en kniv, en roterende knivdeler/cirkelsav, ved anvendelse af en højtryksvandstråleskærer, eller ved hjælp af roterende eller frem- og tilbage-gående blade.The system according to claim 1, wherein the physical division of the meat product (6) obtained by the portioning device (4) is obtained by means of conventional cutting devices, e.g. by using a knife, a rotating knife divider / circular saw, by using a high pressure water jet cutter, or by means of rotating or reciprocating blades. DK 180499 B1 2DK 180499 B1 2 6. En fremgangsmåde til automatisk udskæring af et større kødprodukt (6) i mindre portioner, hvilken fremgangsmåde omfatter de efterfølgende trin: a) tilvejebringelse af kødproduktet (6), som skal skæres, via et tilførsels- transportbånd (2A); b) scanning af det indkommende kødprodukt (6) i en CT-scanningsstation (3), og opsamling af 3D-data afledt af (det inderste af) kødproduktet (6); ¢) transmission af de 3D-data, som er opsamlet i trin b, til et proces- behandlingsmiddel (5) for en bestemmelse og beregning af de optimale skærelinjer/skæremønstre, eventuelt som bestemt eller foreskrevet af en produktforskrift; d) transport af kødproduktet (6) til en portionerings-indretning (4), hvor produktet placeres i en position til opskæring; e) opskæring/portionering af kødproduktet (6) i mindre portioner ved hjælp af portionerings-indretningen (4); f) sortering af de resulterende kødstykker i (ensartede) strømme af produkter for yderligere distribution/forarbejdning; og (f) automatisk aflæsning af det portionerede kødprodukt (6) (dvs. slutproduktet) fra transportbåndet (2).A method of automatically cutting a larger meat product (6) into smaller portions, the method comprising the following steps: a) providing the meat product (6) to be cut via a feed conveyor belt (2A); b) scanning the incoming meat product (6) in a CT scanning station (3), and collecting 3D data derived from (the innermost of) the meat product (6); ¢) transmission of the 3D data collected in step b to a process processing means (5) for a determination and calculation of the optimal cutting lines / cutting patterns, possibly as determined or prescribed by a product regulation; d) transporting the meat product (6) to a portioning device (4), where the product is placed in a position for cutting; e) cutting / portioning the meat product (6) into smaller portions by means of the portioning device (4); f) sorting the resulting pieces of meat into (uniform) streams of products for further distribution / processing; and (f) automatically unloading the portioned meat product (6) (i.e. the end product) from the conveyor belt (2). 7. Fremgangsmåden ifølge krav 6, hvorved den fysiske opdeling af kødproduktet (6) som opnås i trin e ved hjælp af portionerings-indretningen (4), opnås ved hjælp af konventionelle skæreindretninger, f.eks. ved anvendelse af en kniv, en roterende knivdeler/cirkelsav, ved anvendelse af en højtryksvandstråleskærer, eller ved hjælp af roterende eller frem- og tilbage-gående blade.The method according to claim 6, wherein the physical division of the meat product (6) obtained in step e by means of the portioning device (4) is obtained by means of conventional cutting devices, e.g. by using a knife, a rotating knife divider / circular saw, by using a high pressure water jet cutter, or by means of rotating or reciprocating blades.
DKPA201901357A 2019-11-20 2019-11-20 Portion cutting of meat products DK180499B1 (en)

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