EP3386692B1 - Découpe de produits alimentaires - Google Patents

Découpe de produits alimentaires Download PDF

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Publication number
EP3386692B1
EP3386692B1 EP17701708.4A EP17701708A EP3386692B1 EP 3386692 B1 EP3386692 B1 EP 3386692B1 EP 17701708 A EP17701708 A EP 17701708A EP 3386692 B1 EP3386692 B1 EP 3386692B1
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Prior art keywords
product
scanning
compact
compact sensor
products
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EP17701708.4A
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German (de)
English (en)
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EP3386692A1 (fr
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Textor Maschinenbau GmbH
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Textor Maschinenbau GmbH
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Application filed by Textor Maschinenbau GmbH filed Critical Textor Maschinenbau GmbH
Priority to EP21175757.0A priority Critical patent/EP3888864A1/fr
Priority to EP21175748.9A priority patent/EP3900899A1/fr
Publication of EP3386692A1 publication Critical patent/EP3386692A1/fr
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    • 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
    • B26D5/34—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 scanning being effected by a photosensitive device
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a device for slicing food products, in particular a high-performance slicer, according to the preamble of claim 1.
  • Such slicing devices which are also referred to simply as slicers, are known in principle.
  • slicers are known in principle.
  • slices are separated from the food products at a constant cutting frequency.
  • the weight of the individual slices is preferably influenced by varying the thickness of the slices. This is done by a corresponding control of the product feed: the further the product is advanced beyond the cutting plane between two successive cuts of the knife, the greater the thickness of the subsequently cut product slice.
  • the thickness of the pane is only one parameter that determines the weight of the pane in question.
  • the pane weight is determined by the pane volume and the average density of the pane, the pane volume resulting from the pane thickness and the outer surface contour of the pane.
  • the average density of the product can be determined from the total weight of the product, determined by means of scales before it is sliced, and from the total volume of the product determined by the outer surface contour of the entire product.
  • the contour is also known as a profile.
  • a device with the features of the preamble of claim 1 is from DE 198 20 058 A1 known.
  • the scanning device is arranged there in an area upstream of the pivotable product support.
  • a contour detection takes place immediately in front of the cutting knife according to the light section method by means of a radiation source, for example a line projection laser, and a recording device, for example a camera, which are arranged in a common housing, whereby no pivotable product support is disclosed.
  • WO 2004/106020 A1 relates to a device without a pivotable product support, in which information about the contour and the internal composition of food products to be cut into portions is to be obtained by means of ultrasound and / or X-rays.
  • EP 2 341 313 A1 relates to a scanning device for food products that works according to the light section method and deals with the generation of a line of light on a product to be sliced.
  • a pivotable product support is not disclosed.
  • the product scanners are usually separate machines that are each upstream of the slicer as part of an entire production line.
  • the products pass through a tunnel-like scan housing in which the outer product contour is scanned.
  • the electrical and electronic or optoelectronic devices used for scanning are arranged in a comparatively open and unprotected manner within the scanning housing. This is possible because, due to the surrounding scan housing, laser radiation of a higher protection class can also be used.
  • a longer transport and handling distance between a separate, upstream product scanner and the cutting area is also unfavorable, since the product can be unintentionally changed in terms of its outer dimensions, ie its outer contour, on its way to the cutting area. This can be done, for example, by mechanical influence or by temperature influences having an effect.
  • the object of the invention is to create a simple, reliable, inexpensive and space-saving possibility of determining the outer contour of food products to be sliced.
  • the slicing device comprises a contactless scanning device for detecting at least part of the outer contour of the products to be sliced, the scanning device for contour detection comprising at least one compact sensor arranged in the working area.
  • the invention means a fundamental departure from the previous procedure, which consists in using large and expensive product scanners in the form of separate machines for the contour detection and placing them in front of the slicing device.
  • the invention makes use of the knowledge that contour detection is possible with compact sensors which can be arranged in the working area of the slicing device itself, that is to say within the slicer. This overcomes the prejudice prevailing in the prior art, according to which contactless contour detection of food products to be sliced is not possible under the conditions that exist in the transport area and in the cutting area of a high-speed food slicer, i.e. under conditions that are particularly characterized by the presence of dirt , Warmth and humidity.
  • the compact sensor is arranged in its own closed sensor housing, the compact sensor defining a scanning area for the products within the working area of the slicing device which is located outside the sensor housing. While according to previous practice - as already mentioned above - the products have to pass through the scanner housing, the invention provides, so to speak, that the scanner has to orient itself to the products and the way they are handled in the slicer and in particular their transport path through the slicer . Due to the compactness and the general insensitivity of the sensors according to the invention, such an integration into the slicer is possible without any problems.
  • Such a compact sensor can in a common housing as a light source include a laser for emitting laser radiation in a scanning plane and a camera that can record the image of a line that is generated by the emitted radiation in the scanning plane on a product to be scanned.
  • Such sensors can be an integrated electronic system without the Need for an additional controller. Furthermore, such sensors can be insensitive to extraneous light or scattered light. In addition, very high resolutions in the range of a few hundredths of a millimeter and very high data or signal output rates of up to 6 kHz are possible.
  • the sensors can be provided with an integrated Gigabit LAN port.
  • Such compact sensors consequently form quasi self-sufficient units that only need to be connected to a power supply and data acquisition.
  • such a compact sensor has a width of approximately 300 mm, a maximum height of approximately 100 mm and a thickness of approximately 40 mm.
  • Such sensors are available, for example, from wenglorMEL GmbH.
  • the housing of these sensors can be improved in such a way that the sensors meet high device protection classes and are absolutely insensitive to dust and cleaning with water and steam under high pressure and at high temperatures.
  • Another advantage of such sensors is that they can be operated with laser radiation of a low protection class and are therefore harmless to the human eye.
  • Such compact sensors can consequently be positioned freely and openly at any point in the work area of a food slicer. Due to their small size, the compact sensors require little space and can therefore be positioned variably depending on the respective structural conditions of the slicer and the contour of the products to be scanned.
  • Several compact sensors can be arranged independently of one another in the slicer. The acquisition data of several sensors can be computationally combined within the scope of the data evaluation.
  • the compact sensors preferably work according to the so-called light section method in order to detect a contour or a profile.
  • This measuring principle is known in principle to the person skilled in the art.
  • other scanning principles such as, for example, time-of-flight measurements, can also be used according to the invention.
  • the continuous or interrupted lines can be generated on the products to be scanned in any way.
  • a line of light can be emitted by means of a line laser and, if necessary, using suitable optics such as a cylinder lens.
  • a single laser beam can be deflected periodically within a scanning angle range at a high scanning rate.
  • the invention also relates to a method for slicing food products by means of the slicing device according to the invention, in which at least part of the outer contour of the food products to be sliced is detected, the contour within the slicing device being detected by means of the contactless compact sensor of the scanning device.
  • a use not belonging to the invention of at least one compact sensor is disclosed, which is arranged in the working area of a slicing device of the type described herein, for performing one or more additional tasks by detecting at least one contour belonging to at least one functional unit of the device.
  • the sensor housing can be designed in such a way that it satisfies a national or international, standardized protection class, according to which it is dustproof, complete protection against contact and protection against water during high-pressure / steam jet cleaning, in particular protection class IP6K9K or IP69 according to DIN 40 050 Part 9 or DIN EN 60529, or an equivalent protection class.
  • an encapsulated compact sensor or a compact sensor with an encapsulated sensor housing can be provided.
  • the compact sensor preferably comprises a transmitter for emitting scanning radiation into a scanning area and a receiver for receiving radiation from the scanning area, the transmitter and the receiver being arranged in a common sensor housing of the compact sensor.
  • the scanning area represents that volume of space in which the transmitting area of the transmitter and the receiving area of the receiver overlap.
  • the compact sensor emits laser radiation and is designed in such a way that it meets a national or international, standardized laser protection class according to which the laser radiation is harmless to the human eye, in particular laser protection class 1 or 2 according to DIN EN 60825-1, or an equivalent laser protection class.
  • the compact sensor is designed to emit scanning radiation in a scanning plane.
  • This scanning radiation is generated on a to be scanned
  • Product is a line that can be detected by a receiver and evaluated with regard to its course to determine the product contour in the scanning plane, the optical axis of the receiver being inclined with respect to the scanning plane, ie the receiver "looks" at the at an angle to the scanning plane line generated on the product surface.
  • a scanning plane of the compact sensor runs at least substantially perpendicularly or at an angle of more than approximately 45 ° to a direction of movement of the products through the scanning plane.
  • the compact sensor is preferably designed as a laser scanner. Scanners are both those sensors in which a continuous or broken line is emitted and sensors in which a point laser beam is emitted and periodically deflected.
  • the compact sensor preferably works according to the light section method. As already mentioned, such a scanning principle for contour or profile recognition is known in principle.
  • the compact sensor is preferably designed to generate a continuous or interrupted line on a product to be scanned by means of a light source, in particular a laser source, and to record an image containing the line by means of a camera.
  • a light source in particular a laser source
  • a photodiode or a CCD device can serve as the camera.
  • the compact sensor is preferably supported or held on a support frame or frame of the slicing device, by which the cutting area and the transport area of the slicing device are also supported.
  • the compact sensor according to the invention can in principle be used in any manner Work area can be positioned. Comparatively light and filigree brackets or suspensions for the compact sensor can be used.
  • the compact sensor can, for example, also be attached to existing components of the slicing device.
  • the compact sensor is arranged in or on the cutting area or in the area of the product feed.
  • the compact sensor can be arranged in the area of a front product stop of the product feed.
  • a possible distance between the compact sensor and a front stop plane of the product stop is, for example, approximately 5 to 20 mm.
  • the compact sensor is located - viewed in the direction in which the products are fed - at a distance of approximately 30 to 400 mm from the cutting plane.
  • the compact sensor can be arranged according to a further development not belonging to the invention in an area of the transport area upstream of the product supply.
  • the compact sensor can, for example, be arranged in the area of a transfer device by means of which the products are transferred to the product supply.
  • the transfer device can have a pivotable product support, wherein, according to a further development not belonging to the invention, the compact sensor - viewed in the transport direction of the products - is arranged in front of the pivotable product support.
  • the compact sensor can be arranged in the area of a transition between two conveyor devices of a transport path of the transport area. If, according to a further development not belonging to the invention, the compact sensor is arranged below the transport path, for example an intermediate space between two successive belt conveyors can be used to scan the products from below.
  • the compact sensor is arranged in a product entry area of the device, in particular in an entry plane defined by a support frame or a frame of the device, directly in front of or directly behind an entry level.
  • the compact sensor can in principle be placed freely in the slicing device due to its small size, it can be ensured according to one embodiment that the compact sensor is arranged outside of a contamination area of the work area. This does not make it unnecessarily difficult to clean the slicing device.
  • the compact sensor is arranged at a distance from the product and / or from the product feed.
  • different scanning positions are specified for the compact sensor in the working area.
  • the contour detection of the products in the slicing device can in principle take place at different scanning points. Examples of various sampling points have been given above.
  • the different scanning positions belong to a common scanning point. This means that when the scanning position of the compact sensor changes, the Scanning point is changed at which the contour detection of the products takes place within the slicing device, but that the position of the compact sensor can only be changed at the scanning point. For example, the compact sensor can be moved a little further to the front or a little further back - viewed in the direction of movement of the products.
  • the angular position of the compact sensor can be changed around the direction of movement.
  • the contour detection can be optimized in particular as a function of the type or the nature of the respective products, in that the geometric relationships of the scanning are optimized by a different positioning of the compact sensor.
  • the scanning device according to the invention can also react flexibly to conversions or retrofitting of the slicing device that change its structural conditions.
  • the different scanning positions are clearly specified in such a way that the compact sensor can only be placed in a single position and orientation. This means that when the compact sensor is repositioned, no adjustment or teaching processes are required.
  • the compact sensor is adjustable and / or convertible between the scanning positions.
  • the compact sensor can be pivoted or shifted, for example, for this purpose Positive guides and end stops can be provided in order to produce an advantageous clarity of the positioning of the compact sensor.
  • the slicing device it is provided that several parallel product tracks of the slicing device are covered simultaneously by one or more compact sensors. It is therefore not necessary to provide a separate compact sensor for each product in the case of multi-lane operation of the slicing device.
  • the number of compact sensors can therefore be smaller than the number of lanes, it being possible, but not mandatory, for all lanes to be recorded by a single compact sensor. It has been found that a sufficiently large scanning area of the compact sensor can be provided without having to accept impairments, in particular with regard to the positionability of the compact sensor within the slicing device.
  • the track reference can then take place, for example, by filtering out the respectively desired signal in an assigned control device.
  • compact sensors for common contour detection are arranged at a scanning point.
  • a plurality of compact sensors can therefore be arranged at a scanning point, which cooperate in the contour detection.
  • a single compact sensor per scanning point can be sufficient to detect the product contour with sufficient accuracy for the respective invention.
  • These can be arranged distributed in the circumferential direction around the direction of movement or transport of the products. For example, two compact sensors can be provided that each scan the product at an angle from above. Alternatively, a single compact sensor can be provided above the products, which is supported by two compact sensors which scan obliquely from below and which are arranged below the products.
  • the compact sensors work with scanning planes, according to the invention it is possible, but not absolutely necessary, for all scanning planes of the compact sensors to lie in a single common plane. Rather, it is possible that the scanning planes are slightly offset from one another in the transport direction of the products. This considerably simplifies the establishment of a scanning point, since no complex adjustments of the compact sensors relative to one another are required.
  • a distance between the scanning lines on a product of only a few millimeters still enables the scanning lines to be reliably detected and evaluated by the associated compact sensor. In other words, it was found that the compact sensors do not interfere with one another.
  • the aforementioned example is a possibility for a generally preferred concept of the invention, according to which the products can be scanned at a scanning point by at least two compact sensors in a spatially offset manner.
  • a spatial offset it is possible to carry out a time-shifted sampling in that the compact sensors are not active at the same time, but alternately.
  • pulsed operation of compact sensors working according to the light section method can prevent the camera of one sensor from being disturbed by the scan line generated on the product by the other sensor.
  • the scanning takes place at a scanning point by two compact sensors oriented in opposite directions to one another.
  • a point or an area on the outside of a product can be recorded from different directions.
  • this is particularly advantageous because areas that cannot be detected for example, can be prevented due to undercuts or depressions.
  • the scanning device is designed to carry out one or more additional tasks. This can be done by detecting at least one contour by means of the compact sensor which belongs to at least one functional unit of the device.
  • the compact sensor can be used at least temporarily to scan a functional unit of the device. If the compact sensor is arranged in the area of the product feed, for example a product gripper engaging the rear end of the product while a product is being advanced or a different type of product holder can be scanned when it passes the scanning point of the compact sensor during the product advancement.
  • a compact sensor could also be used, for example, to check whether side stops have been installed for the product parameters set on the slicer or whether existing side stops are set to the correct position.
  • the compact sensor can therefore additionally be used to monitor a correct configuration and a correct functional sequence of one or more functional units of the slicing device.
  • the contour detection by means of one or more compact sensors within the slicing device serves in particular to to win constant weight product slices or portions of product slices.
  • a control device which is designed to calculate control data using captured product contours and to operate the device, in particular the product feed, using the control data.
  • the use of one or more compact sensors within the slicing device makes it possible to adapt the contour detection to processes taking place in any case during the handling of the products inside the slicing device.
  • a possible slicing device can be operated in such a way that a product transferred to the product feed is securely gripped with a product gripper engaging the rear product end by pressing the product against a product stop temporarily in the feed path by means of the product gripper. Subsequently, the product is withdrawn by a certain, comparatively short distance by means of the product gripper, which now correctly grips as intended, whereupon the product stop is moved away in order to free the feed path to the cutting plane.
  • the product is then moved towards the cutting plane by means of the product gripper and then through the cutting plane.
  • the problem in this context can be that the product pressed against the product stop deforms during the gripping process, but does not relax completely again when it is subsequently withdrawn.
  • plastic deformation can consequently take place, resulting in permanent deformation, as a result of which the outer product contour changes during gripping. This can lead to errors in the activation of the product feed if the control system assumes an outer product contour due to an upstream scanning process that occurs after the gripping process is no longer present at all due to a non-elastic deformation of the front product area.
  • the invention can avoid errors in that, according to an alternative of the method according to the invention, the product contour is only detected then and in particular only shortly before the slicing, after the product that was previously compressed due to a gripping process in the product supply has relaxed again, whereby it There is no disadvantage if the product only partially relaxes and a residual deformation remains.
  • Such a use of the scanning device according to the invention also does not impair the operating speed of the slicing device. It has been found that the quality and in particular the accuracy of the contour detection is not impaired if the product is scanned during the scanning process in two scanning phases with different feed speeds, as is the case when, according to a further alternative of the method according to the invention, the product is scanned after one Gripping process initially during a rapid feed phase towards the cutting plane and then in one Cutting feed phase is moved through the cutting plane at a relatively slower feed rate. A front product section is then scanned at a relatively higher feed speed and then the remaining product section at a relatively slower feed speed by means of the compact sensor.
  • the contour detection can consequently take place with or shortly after the start of the actual product feed and thus the actual slicing operation.
  • control data are calculated using captured product contours and the slicing device, in particular the product feed, is operated using the control data, in particular for the purpose of producing constant-weight product slices or portions of Win product slices.
  • a possible exemplary embodiment of the method according to the invention is characterized in that one or more additional tasks are carried out by means of the scanning device.
  • at least one contour belonging to at least one functional unit of the device is detected by means of the compact sensor.
  • a food slicer 10 has, in a manner known per se, as a supporting structure a frame-like frame 35 with a plurality of supporting supports and struts.
  • the working area of the slicer 10, which is for the most part within this support frame 35, comprises a front cutting area 11 and a transport area 13 with a product feed 15.
  • the cutting area 11 comprises a cutting head 22 carried on the frame 35, in which, in particular, a drive, not shown, for a cutting knife 21 designed here as a circular knife is arranged.
  • the cutting plane 19 defined by the cutting knife 21 is inclined by approximately 45 ° to the vertical.
  • the axis of rotation 20 of the cutting knife 21 is indicated with a dashed line.
  • the cutting knife 21 rotates around its own axis of rotation 20 and also revolves around a drive axis 24 indicated by a dash-dotted line, with respect to which the cutting knife 21 is arranged eccentrically and thus revolves planetarily.
  • the product support comprises a support plane running perpendicular to the cutting plane 19 and thus also inclined at 45 ° to the vertical, along which the food products 17 to be sliced are fed to the cutting plane 19 with the aid of a product holder 49 engaging the rear end of the product.
  • a movable product stop 16 is provided in front of the cutting area 11 below the cutter head 22. As explained in the introductory part, during a gripping process, the respective product 17 is pressed against the product stop 16 by means of the product holder 49 in order to ensure that the product 17 is reliably gripped. If then the actual product feed to the cutting plane 19 begins, the product stop 16 is moved out of the path of movement of the product 17 in order to clear the path to the cutting plane 19.
  • the product 17 rests on a pivotable product support 39 of the product feed 15.
  • the product support 39 belongs to a transfer device 37, which will be discussed in greater detail below.
  • the product support 39 can, for example, be designed as a freely running endless belt or have a sliding surface for the products 17.
  • a front conveyor 61 which can be, for example, a conveyor belt or a passive sliding support, a product support on which the product 17 rests during the advance.
  • a cutting edge 63 adjoins the front conveyor 61, with which the cutting knife 21 interacts when cutting slices 53 from the products 17.
  • portions 55 are formed from the severed slices 53, which are then transferred to a further conveyor belt 67 and then fed to further processing, in which the portions 55 are in particular weighed.
  • a scale can be integrated into the conveyor 67.
  • a central control device 51 is in Fig. 1 shown schematically, which is connected to the cutting head 22 and the product holder 49 of the product feed 15, among other things.
  • the control device 51 communicates with the other functional units of the slicer 10, in particular with a scanning device which is explained in more detail below and which comprises several compact sensors 23, for which four different scanning points A, B, C, D and E within the slicer 10 are indicated for illustration, where the sampling points B, C, D and E do not belong to the invention.
  • the slicer 10 can in principle be designed for single-track operation or for multi-track transport, supply and slicing of food products 17.
  • the product feed 15 then has a pivotable product support 39 and a product holder 49.
  • the slicer 10 can be designed for completely lane-specific operation, in which the lanes can be operated completely independently of one another and share the common cutting knife 21.
  • the products 17 to be sliced are manually or automatically placed in a loading area 69 onto a further conveying device 44, which can be counted as part of the transport area 13 of the slicer 10, and the loaded products 17 through a rear product entry area 45, which defines an entry level 47, further conveying devices 41 , 43 of the transport area 13 feeds.
  • the transport path formed by the conveying devices 41, 43, 44 which can in particular be endless belt conveyors, rises slightly from back to front so that the products 17 in front of the transfer device 37 are already at a certain height within the slicer 10 and so that the loading height is comparatively low in the loading area 69, which in particular facilitates manual loading.
  • the product is advanced in the product feed 15, inter alia, on the basis of the cross-sectional areas of the products 17, which can be calculated from the outer product contour.
  • the aforementioned non-contact scanning device is provided, which comprises an arrangement of compact sensors 23 at at least one scanning point within the slicer 10.
  • a possible scanning point A is located directly in front of the product stop 16 in the one inclined to the vertical and thus perpendicular to the cutting plane 19 running product supply 15.
  • the compact sensors 23 are consequently arranged in such a way that their scanning planes 33 run parallel to the cutting plane 19 and thus perpendicular to the longitudinal extent of the product and thus perpendicular to the product feed direction.
  • the compact sensors 23 are arranged here in such a way that their scanning planes 33 lie in a common plane. Alternatively, the scanning planes 33 of the compact sensors 23 can be offset from one another.
  • the individual compact sensors 23 are so small that in comparison to the dimensions of the slicer 10 they can be viewed as quasi-punctiform.
  • the slicer 10 has, for example, a length of about 2.70 m without the loading area 69, that is to say up to the entry level 47, a height of about 2.50 m to the upper struts of the support frame 35, and a width of about 1 m means that even with a comparatively compact design of the slicer, in which a large number of functional units are integrated in a comparatively narrow space, there is still enough space for optimal positioning of the small compact sensors 23.
  • the compact sensors 23 can consequently be positioned largely freely and, due to their low weight, can be fastened directly to existing functional units of the slicer 10 or via brackets to these functional units or to the support frame 35 with little mechanical effort.
  • a power supply and a signal line for transmitting the captured contour data to the central control device 51 are sufficient for each of the compact sensors 23 simplified.
  • FIG Fig. 1 Another possible scanning point B, which does not belong to the invention, is located in front of the transfer device 37, which when the product support 39 is pivoted down, which is shown in FIG Fig. 1 is indicated by dashed lines, the products 17 from the front conveyor device 41 of the products 17 via the “rear” of the slicer 10 supplying transport device takes over.
  • the scanning planes 33 of the compact sensors 23 lie in the region of the transition between the conveyor device 41 and the pivoted-down product support 39. As a result, the products 17 can be scanned while they are being transferred to the transfer device 37.
  • An alternative scanning point C which does not belong to the invention, is located in the area of the transition between the two successive conveyor devices 41, 43 of the transport device.
  • the scanning point D which does not belong to the invention.
  • the scanning planes 33 of the compact sensors 23 are located immediately behind the entry plane 47 of the slicer 10 and again in the transition area between two conveying devices 43, 44.
  • the scanning point E which does not belong to the invention, shows yet another positioning option.
  • the compact sensors 23 are arranged directly in front of the product entry area 45.
  • the conveying path can be interrupted at this scanning point E if necessary and, for example, comprise two successive conveyors.
  • Fig. 1 the compact sensors 23 at the respective sampling points A, B, C, D and E are shown only schematically.
  • the enlarged view within the Fig. 1 shows a side view on the left and a front view of a possible compact sensor 23 according to the invention rotated by 90 ° on the right, in order to illustrate how the compact sensors 23 configured according to this embodiment can be oriented in the slicer 10.
  • the compact sensors 23 each comprise a closed sensor housing 25 in which a laser source 29 as a transmitter and a camera 31 as a receiver are arranged.
  • the laser source 29 emits scanning radiation in a scanning plane 33 which, as already mentioned, runs in the slicer 10 perpendicular to the longitudinal extent and thus perpendicular to the respective direction of movement of the products 17.
  • a conical detection area 59 of the camera 31 intersects the V-shaped scanning plane 33 with an optical axis 57, which runs inclined to the scanning plane 33. This overlapping area forms the scanning area 27 ( see. Fig. 5 ) of the compact sensor 25.
  • the compact sensor 23 can have a width b of approximately 300 mm, a smaller height h of approximately 60 mm, a greater height H of approximately 80 mm and a thickness d of approximately 40 mm.
  • the aforementioned scanning area 27 begins in this exemplary embodiment approximately at a distance from the housing 25 of the compact sensor 23 of approximately 300 mm, measured along the scanning plane 33.
  • the scanning area 27 ends approximately after a further 700 mm and thus only at a distance of approximately 1 m from the sensor housing 25.
  • the width of the working area is at the beginning, i.e. at a distance of approximately 300 mm, approximately 280 mm and at the end, i.e. in a distance of about 1,000 mm, about 830 mm.
  • the mean spatial resolution within the scanning range - depending on the direction - is between 45 and 200 ⁇ m.
  • the laser source can be operated with a red laser (wavelength 660 nm) or with a blue laser (wavelength 405 nm).
  • two compact sensors 23 are arranged above a product 17, each of which scan the product 17 at an angle of about 45 ° from above.
  • the scanning planes 33 each run perpendicular to the direction of movement of the product 17 and thus lie in the plane of the drawing Fig. 3 .
  • the scanning planes 33 overlap, so that the upper side of the product 17 can be illuminated from different directions at the same time and, moreover, the side flanks of the product 17 can be at least substantially completely detected.
  • FIG. 4 An alternative arrangement is shown Fig. 4 .
  • a compact sensor 23 is arranged approximately in the middle above the product 17.
  • Two further compact sensors 23 are located on both sides below the product 17 and each detect the product contour from below at an angle.
  • Fig. 5 shows an example of an arrangement in which two compact sensors 23, which are arranged one behind the other in the direction of movement of the product 17 and are oriented opposite one another, are provided.
  • Such an arrangement makes it possible to detect such areas of products 17, in particular, which have highly irregularly shaped surfaces, also at such surface areas which would not be visible by means of a single sensor 23.
  • a plurality of such double arrangements of compact sensors 23 can be distributed around the product 17 in the circumferential direction.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Processing Of Meat And Fish (AREA)

Claims (12)

  1. Dispositif (10) pour trancher des produits alimentaires, en particulier trancheuse à haute performance,
    comportant une zone de travail qui comprend une zone de coupe (11) et une zone de transport (13) ayant une alimentation en produits (15), dans lequel
    l'alimentation en produits (15) amène les produits (17) à trancher à la zone de coupe (11) sur une ou plusieurs pistes, et une lame de coupe (21) se déplace, en particulier en rotation et/ou en révolution, dans un plan de coupe (19) à l'extrémité de la zone de coupe (11),
    il est prévu moyen de transfert (37) à l'aide duquel les produits (17) sont transférés vers l'alimentation en produits (15) et qui comprend un support de produits pivotant (39) qui, dans un état pivoté vers le bas, reprend les produits (17) à trancher depuis un moyen de transport (41) de la zone de transport (13), et qui, dans un état pivoté vers le haut, constitue un support de produits, conjointement avec un transporteur avant (61), en particulier avec une bande transporteuse ou un support glissant passif, sur lequel les produits (17) reposent pendant l'alimentation vers la zone de coupe (11), et comportant un moyen de balayage fonctionnant sans contact pour détecter au moins une partie du contour extérieur des produits (17) à trancher, caractérisé en ce que
    le moyen de balayage pour la détection des contours comprend au moins un capteur compact (23) disposé dans la zone de travail (11, 13), qui est disposé dans un propre boîtier de capteur fermé (25) et qui définit à l'intérieur de la zone de travail (11, 13) une zone de balayage (27) pour les produits (17) qui se trouve à l'extérieur du boîtier de capteur (25), et en ce que le capteur compact (23) est disposé dans ou au niveau de la zone de coupe (11) ou dans la zone de l'alimentation en produits (15).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    le boîtier de capteur (25) est réalisé de manière à satisfaire à une classe de protection nationale ou internationale normalisée, selon laquelle l'étanchéité à la poussière, la protection complète contre le contact et la protection contre l'eau, dans le cas d'un nettoyage à haute pression/jet de vapeur, sont assurées, en particulier de manière à satisfaire à la classe de protection IP6K9K ou IP69 selon la norme DIN 40 050 partie 9 ou DIN EN 60529, ou à une classe de protection équivalente.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que
    le capteur compact (23) comprend un émetteur (29) pour émettre un rayonnement de balayage dans une zone de balayage (27) et un récepteur (31) pour recevoir le rayonnement de la zone de balayage (27), l'émetteur (29) et le récepteur (31) étant disposés dans un boîtier de capteur commun (25) du capteur compact (23), et/ou en ce que
    le capteur compact (23) émet un rayonnement laser et est réalisé de manière à satisfaire à une classe de protection laser nationale ou internationale normalisée, selon laquelle le rayonnement laser est inoffensif pour l'œil humain, en particulier de manière à satisfaire à la classe de protection laser 1 ou 2 selon la norme DIN EN 60825-1, ou à une classe de protection laser équivalente.
  4. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    le capteur compact (23) est réalisé pour émettre un rayonnement de balayage dans un plan de balayage (33), et/ou en ce que un plan de balayage (33) du capteur compact (23) s'étend au moins sensiblement perpendiculairement ou selon un angle supérieur à environ 45° par rapport à une direction de mouvement des produits (17) à travers le plan de balayage (33), et/ou en ce que
    le capteur compact (23) est réalisé sous forme de scanner laser, et/ou en ce que
    le capteur compact (23) fonctionne selon la méthode de la section lumineuse, et/ou en ce que
    le capteur compact (23) est réalisé pour générer une ligne sur un produit à balayer (17) au moyen d'une source lumineuse (29) et pour enregistrer une image contenant la ligne au moyen d'une caméra (31).
  5. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    le capteur compact (23) est soutenu ou maintenu sur un cadre porteur ou sur un bâti (35) du dispositif, portant également la zone de coupe (11) et la zone de transport (13), et/ou en ce que
    le capteur compact (23) est disposé dans la zone d'une butée de produits avant (16) de l'alimentation en produits (15), en particulier dans la direction d'alimentation à une distance d'environ 5 à 20 mm d'un plan de butée de la butée de produits (16), et/ou en ce que
    le capteur compact (23) est disposé dans la direction d'alimentation à une distance d'environ 30 à 400 mm du plan de coupe (19), et/ou en ce que un plan de balayage (27) du capteur compact (23) s'étend au moins sensiblement parallèlement ou selon un angle inférieur à environ 45° par rapport au plan de coupe (19).
  6. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    différentes positions de balayage pour le capteur compact (23) sont définies dans la zone de travail (11, 13), les positions de balayage appartenant en particulier à un emplacement de balayage commun (A, B, C, D, E), en particulier les positions de balayage se distinguant les unes des autres en ce qui concerne leur configuration dans la direction de transport des produits (17) et/ou en ce qui concerne leur configuration autour de la direction de transport, et/ou en ce que
    le capteur compact (23) est réglable et/ou convertible entre les positions de balayage.
  7. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    plusieurs pistes de produits parallèles du dispositif sont simultanément couvertes par ledit au moins un capteur compact (23).
  8. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    plusieurs capteurs compacts (23) sont disposés à un emplacement de balayage (A, B, C, D, E) pour la détection commune des contours, et/ou en ce que
    à un emplacement de balayage (A, B, C, D, E), le balayage est effectué par au moins deux capteurs compacts (23) de manière décalée dans l'espace et/ou dans le temps, et/ou en ce que
    à un emplacement de balayage (A, B, C, D, E), le balayage est effectué par deux capteurs compacts (23) orientés à l'opposé l'un de l'autre.
  9. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen de balayage est réalisé pour effectuer une ou plusieurs tâches supplémentaires en détectant au moins un contour, appartenant à au moins une unité fonctionnelle (49) du dispositif, à l'aide du capteur compact (23).
  10. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    il est prévu un moyen de commande (51) qui est réalisé pour calculer des données de commande en utilisant des contours de produit détectés et pour faire fonctionner le dispositif, en particulier l'alimentation en produits (15), en utilisant les données de commande, en particulier pour obtenir des tranches de produit (53) ou des portions (55) de tranches de produit (53) à poids constant.
  11. Procédé pour trancher des produits alimentaires à l'aide d'un dispositif selon l'une des revendications précédentes,
    dans lequel
    au moins une partie du contour extérieur des produits alimentaires (17) à trancher est détectée,
    le contour est détecté à l'intérieur du dispositif de tranchage (10) à l'aide du capteur compact (23) fonctionnant sans contact du moyen de balayage, le contour des produits (17) est détecté respectivement après que le produit (17), qui a été précédemment comprimé à la suite d'une opération de préhension dans l'alimentation en produits (15), se soit à nouveau détendu au moins partiellement, et/ou
    le contour des produits (17) est détecté respectivement après une opération de préhension dans l'alimentation en produits (15), du fait que tout d'abord, pendant une phase d'avance rapide vers le plan de coupe (19), une section de produit avant est balayée à une vitesse d'avance relativement plus rapide et ensuite, pendant une phase d'avance de coupe à travers le plan de coupe (19), la section de produit restante est balayée à une vitesse d'avance relativement plus lente, à l'aide du capteur compact (23).
  12. Procédé selon la revendication 11,
    caractérisé en ce que
    des données de commande sont calculées en utilisant des contours de produit détectés, et le dispositif de tranchage (10), en particulier l'alimentation en produits (15), est exploité en utilisant les données de commande, en particulier pour obtenir des tranches de produit (53) ou des portions (55) de tranches de produit (53) à poids constant, et/ou en ce que une ou plusieurs tâches supplémentaires sont effectuées à l'aide du moyen de balayage en détectant au moins un contour, appartenant à au moins une unité fonctionnelle (49) du dispositif, à l'aide du capteur compact (23).
EP17701708.4A 2016-02-01 2017-01-27 Découpe de produits alimentaires Active EP3386692B1 (fr)

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EP21175748.9A EP3900899A1 (fr) 2016-02-01 2017-01-27 Découpage de produits alimentaires

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DE102016101753.1A DE102016101753A1 (de) 2016-02-01 2016-02-01 Aufschneiden von lebensmittelprodukten
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EP21175757.0A Division EP3888864A1 (fr) 2016-02-01 2017-01-27 Dispositif pour découpage de produits alimentaires
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WO2017133977A1 (fr) 2017-08-10
EP3900899A1 (fr) 2021-10-27
US20190152084A1 (en) 2019-05-23
EP3888864A1 (fr) 2021-10-06
DE102016101753A1 (de) 2017-08-03
ES2898847T3 (es) 2022-03-09
EP3386692A1 (fr) 2018-10-17

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