EP2414140A2 - Procédé de découpe de blocs de produits alimentaires en portions de poids identique - Google Patents

Procédé de découpe de blocs de produits alimentaires en portions de poids identique

Info

Publication number
EP2414140A2
EP2414140A2 EP10714184A EP10714184A EP2414140A2 EP 2414140 A2 EP2414140 A2 EP 2414140A2 EP 10714184 A EP10714184 A EP 10714184A EP 10714184 A EP10714184 A EP 10714184A EP 2414140 A2 EP2414140 A2 EP 2414140A2
Authority
EP
European Patent Office
Prior art keywords
food bar
food
slicing machine
bar
scanner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10714184A
Other languages
German (de)
English (en)
Other versions
EP2414140B1 (fr
EP2414140B2 (fr
Inventor
Rainer Maidel
Silvio Quaglia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Germany GmbH
Original Assignee
CFS Buehl GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42313943&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2414140(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE200910016096 external-priority patent/DE102009016096A1/de
Application filed by CFS Buehl GmbH filed Critical CFS Buehl GmbH
Publication of EP2414140A2 publication Critical patent/EP2414140A2/fr
Publication of EP2414140B1 publication Critical patent/EP2414140B1/fr
Application granted granted Critical
Publication of EP2414140B2 publication Critical patent/EP2414140B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • 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
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/26—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed wherein control means on the work feed means renders the cutting member operative
    • 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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • 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
    • B26D7/30—Means for performing other operations combined with cutting for weighing cut product
    • 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
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/162—With control means responsive to replaceable or selectable information program
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station

Definitions

  • the present invention relates to a method for slicing a food bar into weight-accurate portions. Furthermore, the present invention relates to a slicer and a food bar.
  • Food bars such as sausage, cheese and / or ham bars must often be cut for sale in portions, which consist of at least one, preferably several food slices.
  • This slicing is usually done on so-called slicers, in which the respective food bar rests on a support that transports him continuously or intermittently in the direction of a cutting knife, which separates food slices from the front end of the food bar.
  • the thickness of the respective disc is preferably determined by the speed of the feed in relation to the rotational speed of the cutting blade.
  • the cut slice (s) is / are transported in portions, whereby the weight of the packaging must correspond to the prepackaging regulation.
  • the packages in particular on average, must be equipped with a higher weight than the stated minimum weight. For example, this additional weight is known to the skilled person as a "give away" and is undesirable or minimized because it limits the profitability of food production.
  • the object is achieved with a method for slicing a food bar into weight-accurate portions, in which:
  • This length is passed to a slicer, which cuts off the respective portion.
  • a food bar is preferably a sausage, cheese or ham bar. These food bars often have a substantially constant cross section. In general, the food bars, such as a sausage, are elongated, i. their cross-section is much smaller than their length. As a rule, the food slices are separated perpendicular to the longitudinal axis. The food bar may also be a natural ham.
  • the weight of the entire food bar is determined prior to its slicing according to an alternative. This can be done with any, familiar to the expert scale.
  • the determination of the weight according to the invention is not limited to weighing. With known density, the weight can also be determined on the basis of data from the fürstrahlscanners, for example, this provides data about the outer shape of the product.
  • This weight W is transferred to a computer unit which stores the weight value. If the weight of the food bar is known, it can also be transferred directly to the computer unit without weighing beforehand.
  • the food bar is screened by a disk scanner with a fürstrahlscanner.
  • This transmission scanner for example an X-ray scanner, has a radiation source and a sensor, for example a photosensitive sensor, which is located on opposite sides of the circumference of the food bar. This sensor is, for example, a line scan camera.
  • the radiation source emits jets which enter on one side of the periphery of the food bar, penetrate the food bar over its entire width and are received on the opposite side from the sensor.
  • This sensor measures the intensity of the received rays, which are attenuated as it passes through the food bar, the attenuation depending on the local nature of the food bar, for example its density.
  • the radiation is carried out over the entire width of the product.
  • the fürstrahlscanner is preferably provided stationary and the food bar is preferably transported along its longitudinal axis by the fürstrahlscanner. In this case, the food bar is, for example, on a conveyor belt, which is arranged between the radiation source and the sensor on.
  • the irradiation of the food bar is done slice by disc, the discs are preferably arranged perpendicular to the longitudinal center axis of the food bar.
  • the desired thickness of such a disk hereinafter referred to as “scanning disk” depends on the desired measuring accuracy, but preferably the thickness of the scanning disk is smaller than the food slice to be separated from the food bar Preferably, the thickness of each scanning disk is the same
  • the values measured in each case by the sensor are stored in the computer unit, preferably as a function of their respective position in the longitudinal direction of the food bar
  • the computer unit can take place in the penetrating scanner or in a downstream slicer or in another CPU sp Insurance can be done as individual values.
  • a curve is laid by the measured values and this curve is stored. Furthermore, it is also possible in each case between two values to interpolate.
  • the computer unit therefore preferably knows which measured value has been determined at which point along the longitudinal axis of the food bar. In the event that one does not work with a uniform scanning disc thickness, in addition the respective thickness of the scanning disc must be registered and stored or taken into account in the determination of the curve.
  • the sum P of all the values determined by the sensor is formed.
  • the thicknesses of the scanning discs are not uniform, it may be advantageous if a sum weighted with the slice thickness is formed. The sum is also saved.
  • the food bar in the same orientation in which it was also illuminated passed to a slicer, which divides it into portions.
  • a certain length X N must be separated from the food bar, which corresponds to the desired target weight G of the respective portion, wherein a portion comprises at least one, preferably several food slices.
  • the cuts of the slicing machine take place substantially parallel to the transmission direction of the transmission scanner and are preferably arranged substantially perpendicular to the longitudinal central axis of the food bar. If this is not the case, a mathematical correction of the respective data record must be made.
  • the initial position of the food bar when cutting as exactly as possible corresponds to the initial position during scanning, so that the stored during scanning longitudinal coordinates match the longitudinal coordinates when slicing.
  • the length (XN) to be separated from the food bar is calculated.
  • the computer unit knows which length XN for the respective portion is to be separated from the food rack. This process is repeated for each serving until the food bar is cut open.
  • the respective values are transferred by the computer unit to the slicing machine, which is controlled on the basis of this value.
  • the person skilled in the art understands that the calculation of the product length to be separated per portion can also take place in a computer unit assigned to the slicer or another CPU which receives data from the Duchstrahlscanner and transmits data to the slicer.
  • the measured values are connected to a curve.
  • the desired weight of the respective portion is specified and determined with the integral, which length (XN) is to be separated from the food bar.
  • the entire calculation is done for all portions of a food bar before it is cut.
  • the length to be separated from the food bar (XN) can be cut into a predetermined number of food slices. This then results in the thickness of the food slices to be separated for the respective portion
  • a certain thickness of the food slices is predetermined.
  • the computer unit then calculates how many of these food slices are separated from the food bar per serving.
  • the scanning disks all have the same thickness, it is sufficient to count the number of measured values determined per food bar. This sum is then divided by a measured length of the food bar, thereby determining what thickness a scanning disc has.
  • the thickness of a scanning disk can also be determined in any other manner known to those skilled in the art.
  • the transmission scanner has a transport means, preferably a conveyor belt, with which the food bar is transported along the transmitter and receiver.
  • the transmission scanner has a means, preferably a detection means, which detects at least one point of the beginning of the food bar on the conveyor belt.
  • the detection means may be located upstream or downstream of the transmission scanner.
  • This detection means preferably starts the transmission scanner and / or the recording of the measured values of the transmission scanner.
  • the measured values are preferably detected as a function of the longitudinal axis of the product.
  • the conveyor belt has a transmitter, which transmits the movement of the belt, in particular the path of the belt to a data acquisition unit and / or the conveyor belt moves at a constant, known transport speed.
  • the time is recorded and integration can be used to determine the distance traveled by the product.
  • the values of the scanning scanner and the way the food bar has traveled are stored as value pairs or as a curve.
  • An interpolation can also be calculated in each case between two or more values and preferably stored.
  • the means also preferably starts the detection of the relative movement between the scanner and the food bar and / or the conveyor belt.
  • the transmission scanner can also be movable while the product is stationary. In this case, the movement of the X-ray scanner must be detected.
  • the time interval and / or the path that the product detects between the detection by the detection means and the reaching of the scanning plane, which preferably extends perpendicular to the transport direction of the food bar, is detected.
  • this distance / path usually corresponds to the physical distance between the detection means and the scanning plane. In the case of natural products such as ham in particular, however, this distance will generally deviate from the physical distance.
  • this distance / path is forwarded to the slicing machine or a corresponding control unit / CPU, so that this value can be used to synchronize the measured values with the slicing process, in particular with the movement of the food bar within the slicing apparatus.
  • several food bars are at least temporarily irradiated simultaneously with a transmission scanner.
  • the food bars are juxtaposed and are preferably scanned along their longitudinal axis.
  • the scanner according to the invention preferably has only one transport means, preferably a conveyor belt.
  • the transmission scanner has only one transmitter and one receiver whose longitudinal axis preferably extends perpendicular to the longitudinal axis of the product to be scanned.
  • the length of the longitudinal axis of the transmitter and / or receiver substantially corresponds to Width of the means of transport.
  • the scanner per food latch on a means, preferably a detection means, which detects the beginning of the respective food bar on the conveyor belt.
  • a reference point is individually determined from each food bar and transmitted to a slicing machine and / or another control unit / CPU. This reference point may be different for each food bar.
  • the distance between the means and the reference point is determined per food latch and transferred to the slicer or to another control unit / CPU.
  • Another object of the present invention is a slicing machine with a cutting knife, which separates food slices from the front end of a food bar, wherein the food bar is transported by a means of transport in the direction of the cutting blade and having means for determining the position of the food bar on the conveyor belt whose direction of transport is detectable and traceable.
  • the transport means are preferably one or more conveyor belts, wherein the food bar preferably rests on a conveyor belt and at least in sections of a further conveyor belt, which is located above the food bar, guided and / or transported.
  • this means comprises a sensor or a stop.
  • the agent may detect a starting point, an initial line or an initial surface of the product. Both the line and the surface can be curved. Based on this data, the position of the product can be determined on the conveyor of the slicer. Furthermore, with this data a
  • Adaptation / synchronization of the longitudinal coordinates determined during scanning to the path of the food bar in the slicing machine preferably takes place without the food bar being appreciably elongated or shortened.
  • the food bar is fixed in the slicing device so that it can possibly perform a small relative movement to the transport.
  • the means of transport comprises an encoder, for example an incremental encoder or a similar means, with which the movement, in particular the path traveled by the conveyor belt, can be detected, so that a controller knows at each point in time where the beginning of the product is located and / or / or which longitudinal section of the product is being cut straight.
  • an encoder for example an incremental encoder or a similar means, with which the movement, in particular the path traveled by the conveyor belt, can be detected, so that a controller knows at each point in time where the beginning of the product is located and / or / or which longitudinal section of the product is being cut straight.
  • the slicing machine comprises a plurality of transport means. This makes it possible to cut several food bars at the same time.
  • the means of transport are preferably independently drivable and thus can be operated at different speeds.
  • Each means of transport preferably has a means by which its movement, in particular its distance covered, can be detected.
  • This means may be an encoder, such as an incremental encoder or other means.
  • each means of transport is provided with a means with which the position of the food bar on the respective means of transport can be detected and tracked in its transport direction.
  • the agent recognizes the beginning of the respective food bar.
  • the agent is a sensor.
  • the means is a stop against which the beginning of the food bar strikes before it is cut open.
  • the food bar is in a clearly defined initial position and his way can be clearly traced, for example, with the donor of the conveyor belt, once the stopper has been removed.
  • the agent may detect a starting point, an initial line or an initial surface of the product. Both the line and the surface can be curved.
  • each means of the slicing machine detects the beginning of the food bar in the same area as the means of the naturalstrahlscanners.
  • the means / are arranged at the same height above the transport means.
  • the means are arranged on the same latitude coordinate so that they detect the beginning of the food bar at the same location as the means on the scanner.
  • the slicing machine has a means, preferably per transport means, with which the orientation of the food bar on the conveyor belt can be determined.
  • This agent can be the same means by which the beginning of the product is identified. By this means it can be determined whether the bar was placed in the correct orientation in the slicer; i.e. whether the beginning of the food bar during scanning is also the beginning of the food bar when slicing and / or if the food bar also rests with the same area on the means of transport of the Slicers, with which he has also listed during scanning. This is advantageous for slicing the food bar in portions and / or classifying the sliced food slices.
  • the slicing machine has a means by which the respective food bar can be customized.
  • This preferred embodiment makes it possible, in particular automatically possible, to associate the respective food batch with the respective scan data record.
  • the slicing machine recognizes which food bar is involved and loads the associated data needed to portion the food bar by weight.
  • the food bar can have a transponder or a barcode that is read out by the slicing machine.
  • This agent may be the same agent that identifies the beginning of the product and / or determines the orientation of the product.
  • the path of a food bar is traced between the penetrant scanner and the slicer and / or within the slicer, preferably electronically. This can be done for example in the form of an electronic shift register.
  • This preferred embodiment has the advantage that each data record can be uniquely assigned to the respective food bar.
  • the slicing machine preferably has a controller which automatically assigns a scan data record to the respective food bar. This ensures that the respective food bar is portioned with exact weight. This preferred embodiment is also advantageous when several food bars are cut simultaneously. The operator then does not have to pay attention to the order in which he inserts the food bars into the slicing machine. The order in the X-ray scanner does not have to correspond to the order of cutting.
  • the slicing machine preferably has a gripper which grips the food bar at its end remote from the slicing surface and stabilizes the food bar in its position, in particular when the food bar has already been largely cut open.
  • the gripping of the food bar takes place only when the cold cut of the food bar has already begun.
  • the food bar is driven and / or guided so that it does not compress the food bar during gripping and / or during subsequent holding of the end of the food bar. This preferred embodiment ensures that the longitudinal coordinates, which are determined during scanning, also coincide with the longitudinal coordinates when slicing.
  • the data determined by the transmission scanner can also be used to determine quality features. For example, these values can be used to determine the area of the beginning and the end of the food bar in which the diameter of the slices is smaller. Furthermore, with the data areas of the food bar with a very high Fat content, very large cavities (cheese) and / or so-called "Blood Spots" are determined These areas with a reduced quality can then be sorted out and do not get into the cut portion. The sorting is also based on the measured data and a corresponding control In addition, the irradiation allows a foreign body detection in the food bar .. Food bars with foreign bodies are at least only partially cut open in order not to damage the knife or because they are unsuitable as food.
  • This analysis preferably takes place via an image analysis.
  • This image analysis analyzes, preferably each, scanning disk over its entire width; i.e. transverse to the transport direction of the food bar.
  • the transmission scanner or a connected CPU via an image recognition software.
  • the analysis is based on a comparison, i. the data within a scan disk, the data before two or more scan disks or the data from one or more scan disks and stored comparison data are compared with each other. As a result, local structural changes, foreign bodies can be detected.
  • FIG. 1 shows a cutting line
  • FIG. 2 shows the transmission scanner
  • FIG. 3 shows the curve of the signal of the transmission scanner
  • FIG. 4 shows the transmission scanner
  • FIG. 5 shows the curve of the signal of the transmission scanner
  • FIG. 6 shows the slicing machine according to the invention
  • FIG. 7 shows a further embodiment of the invention
  • FIG. 8 shows the food bar according to the invention
  • FIG. 9 shows the food bar according to the invention on the fürstrahlscanner or Aufschneidemaschine
  • FIG. 1 shows a slicing line in which food slices are cut into food slices and portions which are as accurate as possible in weight are thereby produced.
  • a food bar 1 is conveyed by a feed belt through the through-beam scanner 4, preferably an X-ray scanner. Before or after scanning, the food bar is weighed, for example with the scale 10. However, the weight of the respective food bar can already be known. In the scanner, the product is scanned slice by slice. The execution of the scanning will be explained in more detail with reference to FIGS. 2-5. After the food bar has been scanned, it is loaded into the slicer 12 by means of the feed conveyor 11. This feed belt may also include a buffer in which already scanned food bars are waiting to be sliced.
  • the data determined by the transmission scanner are either transferred directly to the slicing device or to another control unit / CPU, where they are further processed as needed.
  • the slicing process in the slicing apparatus is now controlled on the basis of the data determined during scanning in such a way that portions which are as accurate as possible in terms of weight are produced. Furthermore, food slices whose structure has undesirable components are sorted out and food slices of different quality are classified into different product groups. After cutting, the respective food portions can be transferred to a weighing device 13 in order to check whether the desired target weight has been maintained.
  • This data can be used to calibrate the data evaluation of the transmission scanner and / or to control the slicing process.
  • the scanner can also be arranged within the slicing device 12, for example in the region of the product feed. In the slicing device several food bars can be cut simultaneously.
  • FIG. 2 shows a transmission scanner which has a conveyor belt 5 on which the food bar 1 to be analyzed is located.
  • the conveyor belt 5 has, for example, a drive 20 with a transmitter, so that the feed of the belt and / or its speed can be detected at any time. If the conveyor belt is operated at a constant, known speed, the path of the conveyor belt can also be determined therefrom.
  • the transport direction of the conveyor belt is shown by the arrow.
  • the transmission scanner has a detection means 6, for example a photocell, which detects a point or a line ⁇ of the beginning of the product.
  • the detection means 6 is arranged at a distance ⁇ from the transmission scanner 4.
  • the detection means may be located upstream or downstream of the transmission scanner. This consists of a radiation source 4 ' and a receiver 4 " , which span a scanning plane 22.
  • the receiver 4 " is preferably a line chamber, or any other means with which the food bar can be analyzed slice by slice.
  • the weight of the entire food bar is determined prior to its slicing. This can be done with any, familiar to the expert scale.
  • the determination of the weight according to the invention is not limited to weighing. With known density, the weight can also be determined on the basis of data from the transmission scanner. This weight W is transferred to a computer unit which stores the weight value. If the weight of the food bar is known, it can also be transferred directly to the computer unit without weighing beforehand. But it may also be sufficient only to determine the length of the food bar.
  • the food bar is screened by a disk scanner with a fürstrahlscanner.
  • This X-ray scanner for example an X-ray scanner, has a radiation source 4 ' and a, for example photosensitive, sensor 4 " located on respectively opposite sides of the circumference of the food bar 1.
  • the radiation source emits radiation on one side of the circumference of the food bar penetrate the food bar and are received on the opposite side of the sensor
  • the food bar is irradiated over its entire width, which extends perpendicular to the paper plane.
  • the sensor measures 4 " Intensity of the received rays, which are attenuated when irradiating the food bar, wherein the attenuation depends on the local nature of the food bar, for example its density.
  • the naturalstrahlscanner is preferably provided stationary and the food bar is preferably transported along its longitudinal axis by the fürstrahlscanner.
  • the irradiation of the food bar is done slice by disc, the discs are preferably arranged perpendicular to the longitudinal center axis of the food bar.
  • n of n scan slices the respectively measured by the sensor values preferably as a function
  • the computer unit may be assigned to the transmission scanner, the slicing machine or another control unit / CPU.
  • the position of the scanning values in the longitudinal direction is determined by the encoder on the Determine conveyor belt elt.
  • the computer unit therefore has which measured value was determined at which point along the longitudinal axis of the food bar.
  • the respective thickness of the scanning disc must be registered and stored.
  • the scan values can be determined as a function of (as a function of) the thickness of the food bar. For the weight-accurate portioning of the food bar, however, it is generally sufficient if the measured scan values per scan disk are integrated over the thickness of the food product, ie one value per scan disk is sufficient.
  • the food bar in the same orientation in which it was also illuminated passed to a slicer, which in portions divided. Per portion of a certain length I must be separated from the food bar, which corresponds to the desired target weight G of the respective portion, wherein a portion comprises at least one, preferably several food slices.
  • the cuts of the slicing machine take place substantially parallel to the transmission direction of the transmission scanner and are preferably arranged substantially perpendicular to the longitudinal central axis of the food bar. In the event that this is not the case, then the scan values must be corrected mathematically.
  • the slicing machine also has a detector (see Figures 6 and 7), which preferably determines the same reference point / line ß of food bar as the detector 6 of the transmission scanner. The signal of this detector is used to determine the position of the food bar in the slicing device and / or to synchronize the data of the scanning process exactly with the slicing operation of the product.
  • the values determined by the transmission scanner can additionally be used to determine quality features. For example, these values can be used to determine the area of the beginning and the end of the food bar in which the diameter of the slices is smaller. Furthermore, the data can be used to determine areas of the food bar with a very high fat content, very large cavities (cheese) and / or so-called "blood spots.” These areas with a reduced quality can then be sorted out and do not reach the cut portion. The sorting also takes place on the basis of the measured values and a corresponding control of the slicing machine, and the irradiation allows a foreign body detection in the food bar .. Food bars with foreign bodies are at least partially cut open in order not to damage the knife or because they are unsuitable as food.
  • the data determined per scanning slice are preferably analyzed as a function of the thickness (perpendicular to the plane of the paper), ie in this case an integral viewing per scanning slice is generally not sufficient stage analysis, which is performed for example by an image recognition software.
  • the analysis of the data collected may lead to the total or partial discarding of a food bar.
  • the separation of parts of the food bar can be done during or after cutting.
  • the remainder can then be processed into "good portions.”
  • the classifying can also be carried out during or after the slicing, and the classification is preferably based on predetermined quality characteristics.
  • FIG. 3 shows the signal of the transmission scanner as a function of the signal of the transmitter from the conveyor belt 4.
  • the signal can also be plotted as a function of time.
  • the scanner 4 After a distance / time interval of ⁇ , the distance / time difference between the detection of the product start by the X-ray scanner 4 and the detection of the reference point ß by the detector 6, the scanner 4 first of all detects the initial area 1 'of the foodstuff 1. In the event that the detector 6 is located downstream of the X-ray scanner, the scanner first detects the initial area 1 'of the food bar 1 before the detector 6 detects the food bar.
  • ⁇ corresponds exactly to the distance ⁇ between the detector 6 and the scanner 4.
  • ⁇ will probably not be.
  • ⁇ ⁇ will be because the product tip is leading the reference point ⁇ .
  • the value ⁇ is passed on to the slicing machine and serves to synchronize the scanned values with the movement of the food bar in the slicing machine.
  • the reference point is used to recalculate the correct product start. Since the food bar in the present case is curved in the present case, the measured values increase slowly.
  • a value is determined as a function of its position within the food bar.
  • the measured values are summarized as curve 8. It is also possible to interpolate between two or more measured values. Each measured value of the curve represents an integral over the thickness and the width of the respective scanning disc.
  • the scanner detects the further structure of the food bar. Its length can be determined with the scan signal and the relative movement between the transmission scanner and the food bar become.
  • the food bar is divided into portions each having a length I such that the desired weight of the portion is obtained in each case. Those skilled in the art will recognize that this length I per serving may be different.
  • FIG. 4 essentially shows the arrangement according to FIG. 2, wherein in the present case the food bar has a vertically arranged initial position. End region 1 'has. Accordingly, the measurement signal shown in FIG. 5 has a very steep start or end edge. In this case, the reference point ß coincides with the product start. In this case, ⁇ and ⁇ are the same
  • FIG. 6 shows the slicing machine according to the invention.
  • This has a transport means 16, with which a food bar 1 is transported in the direction of a rotating cutting blade 14.
  • the means of transport preferably has an encoder with which the movement of the transport means and thus of the food bar can be tracked.
  • This cutting blade 14 separates from the food latch food slices, which are configured to portions of several food slices and then transported away.
  • the slicing machine according to the invention receives the data determined by the transmission scanner 4, as shown for example in FIGS. 3 and 5, in order to divide the food bar into portions which are as accurate as possible in weight or to classify the food slices.
  • this also has a detection means 15 which is at a distance Y from the cutting blade.
  • this detection means detects the beginning of the food bar 1
  • the apparatus can calculate when the beginning of the food bar 1 will be in the cutting plane of the cutting blade 14 and then correlate this time with the data transmitted by the scanner.
  • the value ⁇ is preferably transmitted to the slicing machine. It is important that the detection means 15 detects the same area / point ß of the front end of the food as the detection means 6 of the transmission scanner. Preferably, therefore, the two detection means 6, 15 are arranged at the same height h, so that they recognize the food bar at the same height.
  • the detection means 6, 15 must be provided on the same width coordinate. An at least almost identical arrangement of the detection means 6, 15 ensures that the slicing and the associated data are exactly correlated.
  • the slicing machine can also have a stop against which the front end of the food bar rests, preferably without being compressed. As a result, the position of the food bar in the slicing machine is clearly defined and its further way can be clearly traced. A control unit knows when the front end of the food bar will be in the cutting plane and will synchronize the detected scan data accordingly.
  • FIG. 7 shows a further embodiment of the slicing machine according to the invention.
  • the slicing machine according to the invention has a plurality of conveyor belts 16, with which the food bars can be transported at different speeds in the direction of the cutting knife. In the cutting plane of the cutting blade 14, the food bars are cut into food slices.
  • each transport 16 has a donor, with which the feed of each means of transport can be determined in each case.
  • each transport means 16 has a detection means 15 with which the beginning of the respective food bar can be determined. Otherwise, we refer to the comments on Figure 6.
  • FIG. 8 shows the food bar according to the invention, which has its starting area in the middle 17.
  • the transport direction of the food bar is represented by the arrow marked "z."
  • this means can be an orientation means with which it can be determined whether the product start 7 is actually arranged in the transport direction in front It is possible to assign the respective data record to the respective food bar and this information can also be used to track the production, so that you know which portion of which food bar has been cut open.
  • the means 17 is preferably removed from the food bar before slicing.
  • the means 17 also allows to determine whether the food bar 1 during scanning and / or slicing on the correct peripheral surface, here the peripheral surface 18 "" rests. This may be particularly important if the food bar has an internal structure that is to be detected during scanning.
  • the weight W of the food bar is determined (e.g., 2,000g).
  • the food bar is transported by an X-ray scanner.
  • the X-ray scanner makes a gap-taking of the food bar e.g. every 0.1 mm.
  • the width of the gap is set, for example, by the speed with which the food bar is adjusted by the X-ray scanner and / or the frequency of the images.
  • the determined values Pi, i 1.
  • the values are stored individually and as a function of their position along the longitudinal axis of the food bar in a computer unit connected to the X-ray scanner.
  • the number of scan discs is calculated which must be cut from the food bar to obtain the target weight for that portion.
  • the weight values Wj are added up until at least the desired target weight has been reached (eg 375 scanning disks). This corresponds to a real product length of 37.5 mm cut off the food bar for this portion got to.
  • the slicing machine 15 will cut food slices each 2.5 mm thick from the food bar.
  • the weight W of the food bar is determined (e.g., 2,000g).
  • the food bar is transported by an X-ray scanner.
  • the X-ray scanner makes a gap-taking of the food bar e.g. every 0.1 mm.
  • the width of the gap is set, for example, by the speed with which the food bar is adjusted by the X-ray scanner and / or the frequency of the images.
  • the values are stored individually and as a function of their position along the longitudinal axis of the food bar in a computer unit connected to the X-ray scanner.
  • the slicing machine 15 will cut food slices each 2.5 mm thick from the food bar. 8) Repeat steps 5-7 until the food bar is cut open.
  • L of the food bar e.g., 500 mm
  • a photocell and encoder is used, which measures the advance of the tape on which the food bar is located, as long as the signal of the photocell is interrupted.
  • the food bar is transported by an X-ray scanner.
  • the X-ray scanner makes a gap-taking of the food bar e.g. every 0.1 mm.
  • the width of the gap is set, for example, by the speed with which the food bar is adjusted by the X-ray scanner and / or the frequency of the images.
  • the values are stored individually and as a function of their position along the longitudinal axis of the food bar in a computer unit connected to the X-ray scanner.
  • the target weight of the portion e.g., 150g
  • the slicing machine 15 will cut food slices each 2.5 mm thick from the food bar.
  • the weight W of the food bar is determined (e.g., 2,000g).
  • the food bar is transported by an X-ray scanner.
  • the X-ray scanner makes a gap-taking of the food bar e.g. every 0.1 mm.
  • the width of the gap is set, for example, by the speed with which the food bar is adjusted by the X-ray scanner and / or the frequency of the images.
  • the values are stored individually and as a function of their position along the longitudinal axis of the food bar in a computer unit connected to the X-ray scanner.
  • an integral is calculated below the curve and calculated which length I for the particular portion must be separated from the food bar. This calculation is preferably independent of the thickness of the scanning disks.
  • Step 6 is repeated until the food bar is completely divided into portions.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Meat And Fish (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)

Abstract

L'invention concerne un procédé de découpe de blocs de produits alimentaires en portions de poids identique, et par ailleurs une machine de découpe ainsi qu'un bloc de produit alimentaire.
EP10714184.8A 2009-04-03 2010-04-06 Appareil de découpe de blocs de produits alimentaires en portions de poids identique Active EP2414140B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200910016096 DE102009016096A1 (de) 2009-04-03 2009-04-03 Verfahren zum Aufschneiden eines Lebensmittelriegels in gewichtsgenaue Portionen
DE102009060536 2009-12-23
PCT/EP2010/002149 WO2010112239A2 (fr) 2009-04-03 2010-04-06 Procédé de découpe de blocs de produits alimentaires en portions de poids identique

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EP2414140A2 true EP2414140A2 (fr) 2012-02-08
EP2414140B1 EP2414140B1 (fr) 2019-11-27
EP2414140B2 EP2414140B2 (fr) 2023-03-01

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EP (1) EP2414140B2 (fr)
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Also Published As

Publication number Publication date
WO2010112239A3 (fr) 2011-03-10
WO2010112239A2 (fr) 2010-10-07
ES2767175T3 (es) 2020-06-16
EP2414140B1 (fr) 2019-11-27
US20120073415A1 (en) 2012-03-29
EP2414140B2 (fr) 2023-03-01

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