EP3386691A1 - Tranchage de produits alimentaires - Google Patents

Tranchage de produits alimentaires

Info

Publication number
EP3386691A1
EP3386691A1 EP17701704.3A EP17701704A EP3386691A1 EP 3386691 A1 EP3386691 A1 EP 3386691A1 EP 17701704 A EP17701704 A EP 17701704A EP 3386691 A1 EP3386691 A1 EP 3386691A1
Authority
EP
European Patent Office
Prior art keywords
product
products
compact sensor
contour
compact
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.)
Pending
Application number
EP17701704.3A
Other languages
German (de)
English (en)
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
Textor Maschinenbau GmbH
Original Assignee
Textor Maschinenbau 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
Application filed by Textor Maschinenbau GmbH filed Critical Textor Maschinenbau GmbH
Publication of EP3386691A1 publication Critical patent/EP3386691A1/fr
Pending legal-status Critical Current

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
    • B26D5/007—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
    • 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

Definitions

  • the invention relates to a method for slicing food products by means of a slicing device comprising a working area with a cutting area and a transport area, in which products to be sliced fed single or multi-track cutting area and at the end of the cutting area by means of a cutting plane, in particular rotating and / or circumferentially, moving cutting blade to be cut.
  • Such slicing devices which are also simply referred to as slicers, are basically known.
  • slicers With planetary rotating and additionally rotating circular blades or with only rotating sickle blades, which have speeds of several 100 to several 1000 revolutions per minute during operation, discs are separated at a constant cutting frequency of the food products.
  • the weight of the individual disks is preferably influenced by varying the thickness of the disks. This is done by a corresponding control of the product feed: the farther the product is advanced beyond the cutting plane between two consecutive cuts of the knife, the greater the thickness of the subsequently separated product slice.
  • the slice thickness is just one parameter that determines the weight of the slice in question.
  • the weight of the disk is determined by the disk volume and the average density of the disk, the disk volume being the disk thickness and the outer surface contour of the disk. From the before cutting by means of a Weighing the total weight of the product and from the total volume of the product determined by the outer surface contour of the whole product, its average density can be determined. If weight-constant product slices or portions of product slices are to be obtained, therefore, knowledge of the outer contour of the products to be sliced is required for this purpose.
  • the contour is also called a profile.
  • the above-explained relationships as well as so-called product scanners, which serve to detect the outer contour of food products to be sliced, are known in principle to the person skilled in the art. By way of example, reference is made to DE 196 04 254 A, WO 2000/062983 A, EP 2 644 337 A and DE 10 2009 036 682 A for this purpose.
  • the product scanners are usually separate machines, each of which precedes 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 detected by scanning.
  • the electrical and electronic or optoelectronic devices used for scanning are usually separate machines, each of which precedes 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 detected by scanning.
  • the electrical and electronic or optoelectronic devices used for scanning are usually separate machines, each of which precedes 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 detected by scanning.
  • the electrical and electronic or optoelectronic devices used for scanning are usually separate machines, each of which precedes the slicer as part of an entire production line.
  • Devices are arranged within the scan housing comparatively open and unprotected. This is possible because laser radiation of a higher protection class can be used due to the surrounding scan housing. In addition, it is not necessary to subject the interior of the scan housing to a high-pressure or steam jet cleaning, which is why the electrical or electronic devices do not have to meet particularly high requirements for the degree of protection or protection class.
  • a disadvantage of the product scanners used hitherto in practice are the high additional costs and the increased space requirement, as a separate machine trained product scanner comparatively much space required and in particular the length of a production facility significantly increased.
  • the object of the invention is to provide a simple, reliable, cost-effective and space-saving option to determine the outer contour or other optional for the operation of the slicer optionally usable or mandatory leh parameters of sliced food products.
  • the products to be sliced are scanned at at least one scanning point with precisely one non-contact, arranged in the work area compact sensor, the operation of the slicing device is controlled depending on the outer contour of the products, and wherein a Part of the product contour detected by means of the compact sensor and a non-detectable by means of the compact sensor part of the product contour is specified.
  • this method according to the invention is based on the fact that the scanning of the products to be sliced takes place within the slicing device, by means of a compact sensor. This concept and its associated benefits will be discussed in more detail below.
  • the invention is based on the fact that exactly one such compact sensor is used to scan the products to be sliced. The effort for product sampling is thereby reduced to a minimum.
  • a respective product e.g. Salami
  • a circular cross-section it is known that a respective product, e.g. Salami, has a circular cross-section, then it is sufficient to determine by means of the single compact sensor, a circular arc of the outer contour and to calculate the circle radius and thus the cross-sectional area.
  • the non-detectable, so to speak "in the shadow" part of the product contour is not needed for this purpose.
  • the entire product contour can be determined by detecting the contour of the upper side of the product by means of the compact sensor and additionally by applying the above-mentioned knowledge to the basic shape of the product determine the type of product concerned.
  • the non-detectable part of the product contour is predefined on the basis of a known or assumed product cross section.
  • the non-detectable part of the product contour can be specified via parameters determined beforehand in any way.
  • the specification of an imperceptible part of the product contour can be done by calculation or by extrapolation.
  • the sampling-in particular for each individual product-determines at least one product parameter and the operation of at least one functional unit of the slicing device is carried out as a function of the product parameter.
  • the product parameter may be, for example, the product length or the beginning of the product. This aspect will be discussed in more detail below.
  • a scale arranged downstream of the cutting blade which serves to determine the weight of the slice or portion weight after cutting, can be dispensed with.
  • a single compact sensor can thus replace such a portion scale.
  • Such a scale is in practice part of a control loop and provided to give the product supply feedback on the actual portion weight, so that the product supply is controlled accordingly and to a predetermined target weight can work.
  • a single compact sensor can render a balance downstream of the cutting blade superfluous.
  • the contour determination by means of the single compact sensor can be included in the mentioned control circuit, in order to further improve the accuracy of the accurate weight cutting in this way.
  • the density or density related to the product to be cut can be used in other ways to calculate the weight of the pan or portion, regardless of whether exactly one or more compact sensors are used as weighing scales. Replacement "are used.
  • table values for product density may be used for each product type, or a density value of the product previously sliced may be used in each case if the slices of the products produced are weighed but these weight values are not e.g. be used in the context of a control circuit for controlling the product feed.
  • the products to be sliced are scanned at at least one scanning point with at least one non-contact, arranged in the work area compact sensor, wherein at least one product parameter determined by the scan and the operation of at least one functional unit of Aufschneidevorrich- device depending is performed by the product parameter.
  • the invention opens up a new field for the production of product information within the slicing apparatus, which can serve the functional processes in handling the products, in particular with regard to Optimization of the cutting results as well as the increase of the working speed to improve.
  • This concept is fundamentally independent of the number of compact sensors used in the slicing device. For some applications, a single compact sensor is sufficient. This is the case, for example, if the product length, the beginning of the product or the end of the product are to be determined. Other applications, however, can use several compact sensors at one sampling point, for example to be able to determine the product contour completely or at least a larger part of the product contour. This may be the case in particular if the products have a strongly irregularly shaped surface.
  • Irregularly shaped products for example, whose cross-sectional area is still too small at a front product portion to give usable product slices, so to speak products with an irregularly shaped "nose", require a so-called gating control which determines which of the first slices of product sliced off must be discarded , ie from which separated product disc can be recycled eg by portioning.
  • gating control determines which of the first slices of product sliced off must be discarded , ie from which separated product disc can be recycled eg by portioning.
  • the at least one compact sensor can define an initial slice thickness, which is determined as a function of the product contour determined by means of the at least one compact sensor, at least at the front product section. So far, the initial slice thickness has been fixed in practice. The invention thus makes it possible, by means of the at least one compact sensor arranged in the working area of the slicer, to provide variable gate control tailored to individual product characteristics.
  • the product beginning can be determined as a product parameter.
  • the product supply can be controlled depending on the position of the product start in the product supply. Consequently, the at least one compact sensor can replace a otherwise required product start sensor, for example a light barrier.
  • the determination of the beginning of the product and thus the determination of the position or position of the product within the product feed takes place as long as a product holder of the product feed is still in the return path to a starting position.
  • the product end can be determined by means of the at least one compact sensor.
  • the product holder then only needs to be moved back as far as required by the length of the product to be sliced.
  • the product length can be determined as a product parameter, wherein in particular the product feed is controlled as a function of the product length.
  • the product length not only the position of the product end is known when the position of the product start is known, and vice versa, but the product length can be used for example in the context of a "pre-recognition" for planning the operation.
  • at least an approximate value for the number of expected product slices or portions can be estimated beforehand from the product length.
  • a starting position of a product holder of the product feed is determined as a function of the product length.
  • the product length is determined as a product parameter and a transfer device, by means of which the products are transferred to the product supply, is controlled as a function of the product length.
  • a transfer device by means of which the products are transferred to the product supply, is controlled as a function of the product length.
  • the fact can be exploited that at least when the product type is known, from the product length on at least the approximate product weight can be closed.
  • the product contour of at least one front section of the product is determined as a product parameter and taken into account in a control of the product feed as a function of slice or portion weights determined after slicing.
  • inventive concept of this aspect of the invention namely the determination of at least one product parameter by scanning with at least one compact sensor and the operation of the operation of at least one functional unit of the slicing device in dependence on this product parameter, can be combined with the other aspect of the invention.
  • a part of the product contour is detected by means of the compact sensor and a part of the product contour which can not be detected by means of the compact sensor is predetermined.
  • one or more compact sensors can be used in a multi-functional manner in the slicer and used both for product contour detection, in particular with the aim of accurate weight cutting, and for determining one or more product parameters for controlling the operation of one or more functional units of the slicer.
  • a compact sensor may report to the controller of the slicer the beginning of the product and a value for the initial slice thickness, as well as scan the product over its entire length to determine the product contour for use by the slicers control unit or product feed to obtain weight-accurate portions ,
  • this can also be used to detect at least one contour that belongs to a functional unit of the slicer, for example, to check whether a product gripper or product holder is correctly aligned Whether a product test piece to be thrown off in normal operation is still located on the product gripper or product holder, or if any required side stops for the products are ever installed or if existing side stops are each set to the correct position.
  • One or more compact sensors can fulfill such a variety of tasks and thus save components, since according to the invention the at least one compact sensor can be arranged in the slicer and positioned there practically free.
  • a further aspect of the invention relates to a device for slicing food products, in particular a high-performance slicer, having a working area which comprises a cutting area and a transport area with a product feed, wherein the product feed feeds products to be sliced into the cutting area in one or more tracks and at the end of the cutting area a cutting blade, in particular rotating and / or rotating, moves in a cutting plane, with a contactless scanning device which comprises at least one scanning point for scanning the products to be sliced exactly one or more compact sensors arranged in the working range, and with a control device for controlling the operation of the slicing device.
  • the slicing apparatus is designed to carry out one of the slicing methods described herein.
  • the products are scanned by means of the at least one compact sensor in the region of the product feed.
  • the products are scanned by means of the at least one compact sensor in the region of a front product stop of the product feed, in particular in the feed direction at a distance of about 5 to 20 mm from a stop plane of the product stop.
  • the products are scanned by means of the at least one compact sensor in the feed direction at a distance of about 30 to 400 mm from the cutting plane.
  • the products are scanned by means of the at least one compact sensor in an area of the transport area upstream of the product feed.
  • the products are scanned by means of the at least one compact sensor in the region of a transfer device, by means of which the products are transferred to the product supply.
  • the products are scanned by means of the at least one compact sensor in the transport direction in front of a pivotable product support of the transfer device.
  • the products are scanned by means of the at least one compact sensor in a product entry region of the device, in particular in an entrance plane defined immediately before or immediately behind a support plane defined by a support frame or a frame of the device.
  • Control data is preferably calculated using detected product contours, and the slicing device, in particular the product feed, is operated using the control data, in particular for obtaining weight-constant product slices or portions of product slices.
  • the invention represents a fundamental departure from the previous approach, which is to use large and expensive product scanners in the form of separate machines for contour detection and to pre-store the slicing device.
  • the invention makes use of the knowledge that a contour detection with compact sensors is possible, which can be arranged in the working area of the slicing device itself, ie within the slicer. This overcomes the prevailing prejudice in the prior art that contactless contour detection of food products to be sliced is not possible under the conditions encountered in the transport and cutting areas of high speed food slicers, that is, conditions particularly due to the presence of dirt To distinguish heat and moisture.
  • Such a compact sensor may comprise in a common housing as the light source a laser for emitting laser radiation in a scanning plane and a camera which can take the image of a line which is generated by the emitted radiation in the scanning plane on a product to be scanned.
  • Such sensors may have an integrated electronics system without the need for an additional controller.
  • Such sensors may be insensitive to extraneous light or stray light.
  • very high resolutions in the range of a few hundredths of a millimeter as well as very high data or signal output rates of up to 6 kHz are possible.
  • the sensors can be equipped with an integrated Gigabit LAN port.
  • Such compact sensors thus form quasi self-sufficient units that need only be connected to a power supply and data acquisition.
  • a compact sensor has a width of about 300 mm, a maximum height of about 100 mm and a thickness of about 40 mm.
  • Such sensors are available, for example, from the company wenglorMEL GmbH.
  • the housing of these sensors can be improved in such a way that the sensors meet high equipment protection classes and are absolutely insensitive to dust and cleaning with water and steam under high pressure and at high temperatures.
  • Such compact sensors can consequently be positioned freely and openly in the working area of a food slicer at any desired location. Due to their small size, the compact sensors require little space and can thus be placed variably depending on the particular structural conditions of the slicer and on the contour of the products to be scanned.
  • Several compact sensors can be arranged independently in the slicer. The acquisition data of several sensors can be computationally combined in the data evaluation.
  • the compact sensors preferably operate 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. Reference is also made to the above-mentioned patent literature on the prior art. In principle, however, other scanning principles such as, for example, light transit time measurements can also be used according to the invention.
  • the generation of the continuous or interrupted can be used according to the invention.
  • the lines to be scanned on the products to be scanned can be made in any desired manner.
  • a line laser and optionally using a suitable optics, such as a cylindrical lens a light line can be emitted.
  • a single laser beam may be periodically deflected within a high scan rate scan angle range.
  • the compact sensor is arranged in a separate sealed sensor housing, wherein the compact sensor defines within the working range of the slicing a scanning range for the products, which is located outside of the sensor housing.
  • the compact sensor defines within the working range of the slicing a scanning range for the products, which is located outside of the sensor housing.
  • the sensor housing can be designed such that it meets a national or international, standardized protection class, according to which dust tightness, complete protection against contact and protection against water in high pressure / steam jet cleaning are given, in particular the 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 can be provided with a sealed sensor housing.
  • the compact sensor preferably comprises a transmitter for emitting scanning radiation into a scanning region and a receiver for receiving radiation. ment from the scanning, wherein the transmitter and the receiver are arranged in a common sensor housing of the compact sensor.
  • the scanning range represents that volume of space in which the transmitting range of the transmitter and the receiving range of the receiver overlap.
  • the compact sensor emits laser radiation and is designed such that it satisfies a national or international, standardized laser protection class according to which the laser radiation is harmless to the human eye, in particular the 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 generates on a product to be scanned a line which can be detected by means of a receiver and evaluated in its course for determining the product contour in the scanning plane, wherein the optical axis of the receiver is inclined relative to the scanning plane, i. the receiver "looks" at the line created on the product surface at an angle to the scanning plane.
  • a scanning plane of the compact sensor is at least substantially perpendicular or at an angle of more than about 45 ° to a direction of movement of the products through the scanning plane.
  • the compact sensor is designed as a laser scanner.
  • a scanner here are referred to both those sensors in which a continuous or broken line is emitted, as well as sensors in which a point-shaped laser beam emitted and periodically deflected.
  • the compact sensor operates according to the light section method. As already mentioned, such a scanning principle for contour or profile recognition is basically known.
  • 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 camera for example, a photodiode or a CCD device can be used.
  • the compact sensor is supported or held on a support frame or frame of the slicing device, of which also the cutting region and the transport region of the slicing device are supported.
  • the compact sensor according to the invention can be positioned in basically any manner in the working area. Comparatively light and filigree mounts or suspensions for the compact sensor can be used.
  • the compact sensor can also be attached, for example, to existing components of the slicing device.
  • the compact sensor can be arranged in or on the cutting area. It is also possible to arrange the compact sensor in the product supply area. In particular, the compact sensor can be arranged in the region of a front product stop of the product supply. A possible distance of the compact sensor from a front stop plane of the product stop is for example about 5 to 20 mm. In one possible embodiment, the compact sensor, viewed in the feed direction of the products, is located at a distance of approximately 30 to 400 mm from the cutting plane.
  • a particular advantage of the arrangement of one or more compact sensors in the region of the product supply, for example in the region of the aforementioned front product stop, is that the products can be scanned during the actual product feed in the cutting operation, ie in a state in which they already with the product holder interact and in particular have already been seized at the rear end of the product.
  • the gripping process can change the position or orientation of a product relative to its previous position or orientation.
  • a scan taken before gripping may provide data relating to a location or orientation of the products that is no longer present at the time of slicing and is therefore subject to inaccuracy.
  • the compact sensor can be arranged in an area of the transport area upstream of the product feed.
  • the compact sensor can be arranged, for example, in the region of a transfer device, by means of which the products are transferred to the product supply.
  • the transfer device may have a pivotable product support, wherein the compact sensor - seen in the transport direction of the products - is arranged in front of the pivotable product support.
  • the compact sensor can be arranged in the region of a transition between two conveyors of a transport path of the transport area. be arranged. If the compact sensor is arranged below the transport path, for example, a gap between two successive belt conveyors can be used to scan the products from below.
  • the compact sensor is arranged in a product entry region of the device, in particular in an entrance plane defined immediately before or immediately behind a support plane or a frame of the device.
  • the compact sensor is basically freely placeable in the slicing device due to its small size, according to one embodiment it can be ensured that the compact sensor is arranged outside a soiling area of the working area. Cleaning of the slicing device is thereby not made unnecessarily difficult.
  • the compact sensor is arranged at a distance from the product and / or the product supply.
  • different sampling positions for the compact sensor are predetermined in the work area. This means, on the one hand, that the contour detection of the products in the slicing device can always be done at different sampling points. In the above, examples of different sampling points have been mentioned. In particular, however, it can also be provided that the different sampling positions belong to a common sampling point. This means that when the scanning position of the compact sensor changes, the scanning point at which the contour detection takes place on the products within the slicing device is not changed, 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 forward or a little further back - in terms of 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 by optimizing the geometric conditions of the sampling by a different positioning of the compact sensor.
  • the scanning device according to the invention can react flexibly to conversions or retrofits of the slicing device, which change its structural conditions.
  • the different scanning positions are in particular so clearly defined that the compact sensor can be placed only in a single position and orientation. As a result, no adjustment or training operations are required in a repositioning of the compact sensor.
  • the compact sensor is adjustable between the scanning positions and / or convertible.
  • the compact sensor can, for example, be pivoted or displaced, for which purpose, for example, forced guides and end stops can be provided in order to produce an advantageous uniqueness of the positioning of the compact sensor.
  • one or more compact sensors at the same time produce a plurality of parallel product pumps. covered the cutting device. It is therefore not necessary to provide a separate compact sensor for a multi-track operation of the slicing device for each product.
  • the number of compact sensors can thus be smaller than the number of tracks, it being possible, but not mandatory, that all tracks are detected by a single compact sensor. It has been found that a sufficiently large scanning range of the compact sensor can be provided without having to accept any adverse effects, in particular with regard to the positionability of the compact sensor within the slicing apparatus.
  • the reference can then be made for example by filtering the respective desired signal in an associated control device.
  • a plurality of compact sensors for common contour detection are arranged at a scanning point. It can therefore be arranged at a sampling multiple compact sensors, which cooperate in the contour detection.
  • a single compact sensor per sampling point may be sufficient to detect the product contour with sufficient accuracy for the particular invention.
  • the above-mentioned example is a possibility for a general preferred concept of the invention, according to which the scanning of the products can take place spatially offset by at least two compact sensors at one scanning point.
  • a spatial offset it is possible to perform a time-offset scan in that the compact sensors are not active simultaneously but alternately.
  • it can be prevented by a pulsed operation with compact sensors operating according to the light-section method that the camera of one sensor is disturbed by the scan line generated by the other sensor on the product.
  • the scanning takes place at two sampling points by two compact sensors oriented in opposite directions. In this way, a location or area on the outside of a product can be detected from different directions. In the case of strongly irregularly shaped products, this is particularly advantageous because areas not to be detected are prevented, for example due to undercuts or depressions.
  • the scanning device is designed to carry out one or more additional tasks. This can be achieved 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 at least temporarily be used to scan a functional unit of the device. For example, if the compact sensor is located in the region of the product feed, a product gripper engaging during the advancement of a product at the rear end of the product or another type of product holder may be scanned as it passes the sampling location of the compact sensor during product feed.
  • the compact sensor due to the fact that it is located inside the slicing apparatus, can additionally be used to monitor a proper configuration as well as a proper operation of one or more functional units of the slicing apparatus.
  • the contour detection by means of one or more compact sensors within the slicing device serves, in particular, to obtain weight-constant product slices or portions of product slices.
  • a control device may be provided which is designed to control data using detected product contours calculate and operate the device, in particular the product supply, using the control data.
  • a possible slicing device can be operated in such a way that a product transferred to the product supply is thereby securely gripped by a product gripper acting on the rear product end, so that the product is pressed by means of the product gripper against a product stop which is temporarily in the feed path. Subsequently, the product is retracted by a certain, comparatively short distance by means of the product gripper, which now correctly grips in the intended manner, whereupon the product stop is moved away in order to release the feed path to the cutting plane.
  • a problem in this context may be that the product pressed against the product stop deforms during the gripping process, but does not completely relax during the subsequent retraction. Depending on the respective product type, a plastic deformation can consequently take place, resulting in a permanent deformation, whereby the outer product contour changes during gripping. This can lead to errors in the control of the product feed, if the controller assumes an outer product contour due to an upstream scanning process, which no longer exists after the gripping process due to a non-elastic deformation of the front product area.
  • the invention can avoid errors by detecting the product contour only then and especially shortly before cutting becomes after the previously compressed due to a gripping operation in the product supply product has relaxed again, and it is without detriment, when the product is only partially relaxed and a residual deformation remains.
  • the contour detection can thus take place with or shortly after the start of the actual product feed and thus the actual slicing operation.
  • the scanning of the product thus begins, in particular, only when the product is advanced towards the cutting plane by means of the product holder.
  • Such use of the scanning device according to the invention also does not lead to an impairment of the working 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 in two scanning phases at different feed rates during the scanning process, as is the case after a gripping operation during a fast feed phase towards the cutting plane and then in a cutting feed phase at a relatively slower feed rate is moved through the cutting plane. It is then scanned a front product section at a relatively higher feed rate and then the remaining product section at a relatively slower feed rate by means of the compact sensor. Again, the contour detection can thus take place with or shortly after the start of the actual product supply and thus the actual slicing operation.
  • control data can be calculated using detected product contours and the up-cutting device, in particular the product supply, is operated using the control data, in particular for the purpose of weight-constant product slices or To extract portions of product slices.
  • FIG. 1 shows a schematic side view of a food slicer according to the invention.
  • Fig. 2 shows two views of a compact sensor used in the invention
  • a food slicer 10 has, in a manner known per se, a load-bearing structure as a frame-like frame 35 with a plurality of supporting supports and struts.
  • the most part within this Supporting frame 35 located working area of the slicer 10 includes a front cutting area 1 1 and a transport area 13 with a product feeder 15th
  • 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 blade 21 designed here as a circular blade is arranged.
  • the defined by the cutting blade 21 cutting plane 19 is inclined at about 45 ° to the vertical.
  • With a dashed line the axis of rotation 20 of the cutting blade 21 is indicated.
  • the cutting blade 21 rotates about its own axis of rotation 20 and also runs around a direction indicated by a dash-dotted line drive shaft 24, with respect to which the cutting blade 21 is arranged eccentrically and thus rotates planetary.
  • the product support comprises a support plane extending perpendicularly to the cutting plane 19 and thus likewise inclined by 45 ° to the vertical, along which food products 17 to be sliced are fed to the cutting plane 19 with the aid of a product holder 49 acting on the rear product end.
  • a movable product stopper 16 is provided before the cutting area 1 1 below the cutter head 22 .
  • the respective product 17 is pressed by means of the product holder 49 against the product stopper 16 in order to ensure a reliable gripping of the product 17. Then, when the actual product feed to the cutting plane 19 begins, the product stopper 16 is moved out of the path of movement of the product 17 to release 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 more detail below.
  • the Product support 39 may be formed, for example, as a freely running endless belt or have a sliding surface for the products 17.
  • the pivotable product supports 39 together with a front conveyor 61, which may, for example, be a conveyor belt or a passive sliding support, forms a product support on which the product 17 rests during the advance.
  • the front conveyor 61 is adjoined by a cutting edge 63, with which the cutting blade 21 cooperates when separating slices 53 from the products 17.
  • portions 55 are formed from the separated slices 53, which are then transferred to a further conveyor belt 67 and then fed to a further processing, in which the portions 55 are weighed in particular.
  • a balance 81 is integrated into the conveyor 67, but may also be disposed at another location subsequent to the cutting blade 21 and / or provided as a separate unit not integrated in a conveyor.
  • a central control device 51 is shown schematically in Fig. 1, which is connected, inter alia, with the cutting head 22 and the product holder 49 of the product supply 15.
  • the control device 51 communicates with the other functional units of the slicer 10, in particular with a scanning device explained in more detail below, which in this embodiment comprises exactly one compact sensor 23 positioned above the products 17, for the purpose of illustrating five different scanning points A, B, C , D and E within the slicer 10 are indicated.
  • a plurality of circumferentially distributed, cooperating compact sensors 23 may be provided at a sampling point within the slicer 10.
  • the slicer 10 may in principle be designed for one-track operation or for a multi-lane transport, feeding and slicing of food products 17. For each track then has the product supply 15 a pivotable product support 39 and a product holder 49.
  • the slicer 10 may be formed for a fully individual track operation in which the tracks can be operated completely independently and share the common cutting blade 21.
  • the products 17 to be sliced are placed manually or automatically in a loading area 69 on a further conveyor 44, which can be counted to the transport area 13 of the slicer 10 and the loaded products 17 through a rear product entry area 45, which defines an entrance level 47, further conveyors 41st , 43 of the transport area 13 feeds.
  • the transport path formed by the conveying devices 41, 43, 44 which may be, in particular, endless belt conveyors, rises slightly from the rear to the front so that the products 17 in front of the transfer device 37 are already at a certain height within the slicer 10 and thus in the loading area 69, the loading height is comparatively low, whereby in particular a manual loading is facilitated.
  • the product feed takes place 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 already mentioned contactlessly operating scanning device is provided, which comprises at least one scanning point within the slicer 10 one or more compact sensors 23.
  • a possible scanning point A is located directly in front of the product stop 16 in the product feed 15 inclined to the vertical and thus perpendicular to the cutting plane 19.
  • the compact sensor 23 is thus arranged in such a way that that its scanning plane 33 is parallel to the cutting plane 19 and thus perpendicular to the product longitudinal extent and thus perpendicular to the product feed direction. If a plurality of compact sensors 23 are provided, then they may be arranged such that their scanning planes 33 lie in a common plane. Alternatively, the scanning planes 33 of the compact sensors 23 may be offset from each other.
  • a single compact sensor 23 is so small that it can be regarded as quasi point-shaped compared to the dimensions of the slicer 10.
  • the slider 10 has, for example, a length of about 2.70 m without the loading area 69, ie up to the entry level 47, a height of about 2.50 m up to the upper struts of the support frame 35, and a width of about 1 m , This means that even with a comparatively compact design of the slicer, in which a plurality of functional units are integrated in a comparatively small space, there is still sufficient space for optimum positioning of one or more compact sensors 23.
  • the compact sensors 23 can thus be largely freely positioned and due to their low weight with little mechanical effort directly on existing functional units of the Slicers 10 or on holders on these func- on units or on the support frame 35 are attached.
  • a power supply and a signal line for transmitting the acquired contour data to the central control device 51 suffice for the compact sensors 23 in each case.
  • a wireless data transmission and a battery or battery operation of the compact sensors 23 are possible, which further simplifies their integration into the slicer 10.
  • a further possible sampling point B is located in front of the transfer device 37 which, when the product support 39 is swung down, which is indicated by dashed lines in FIG. 1, the products 17 from the front conveyor 41 feed the products 17 via the "tail" of the slicer 10 transport means takes over.
  • the scanning plane 33 of the compact sensor 23 lies in the region of the transition between the conveyor 41 and the swung-down product support 39. Consequently, the products 17 can be scanned while being transferred to the transfer device 37.
  • An alternative sampling point C is located in the region of the transition between the two successive conveyors 41, 43 of the transport device.
  • Another possibility for positioning one or more compact sensors 23 shows the sampling D.
  • the scanning plane 33 of the single compact sensor 23 is located immediately behind the entrance plane 47 of the slicer 10 and again in the transition region of two conveyors 43, 44.
  • the sampling E shows yet another positioning possibility.
  • the compact sensor 23 is arranged directly in front of the product inlet region 45.
  • the conveying path can be interrupted and, for example, interrupted. comprise two consecutive conveyors to enable or improve scanning of the products 17 from below and from below, respectively.
  • the compact sensor 23 is shown only schematically at the sampling points A, B, C, D and E respectively. 1 shows on the left a side view and on the right a front view rotated by 90 ° of a possible compact sensor 23 according to the invention in order to illustrate how a compact sensor 23 designed according to this embodiment can be oriented in the slicer 10.
  • the compact sensor 23 comprises a sealed sensor housing 25, in each of which a laser source 29 as a transmitter and a camera 31 are arranged as a receiver.
  • the laser source 29 emits scanning radiation in a scanning plane 33, which in the slicer 10, as already mentioned, is perpendicular to the longitudinal extension and thus perpendicular to the respective direction of movement of the products 17.
  • a scanning plane 33 which in the slicer 10, as already mentioned, is perpendicular to the longitudinal extension and thus perpendicular to the respective direction of movement of the products 17.
  • the V-shaped scanning plane 33 In a predetermined by the respective configuration of the compact sensor 23 distance from the sensor housing 25 intersects a conical detection range 59 of the camera 31 with an optical axis 57 which extends inclined to the scanning plane 33, the V-shaped scanning plane 33. This overlap region forms the scanning of the compact sensor 25th
  • the compact sensor 23 may have a width b of about 300 mm, a smaller height h of about 60 mm, a greater height H of about 80 mm and a thickness d of about 40 mm.
  • the mentioned scanning begins in this embodiment approximately in a measured along the scanning plane 33 distance from the housing 25 of the compact sensor 23 of about 300 mm.
  • the scanning area ends approximately after a further 700 mm and thus only at a distance of about 1 m from the sensor housing 25.
  • the width of the working area is at the beginning, ie at a distance of about 300 mm, about 280 mm and at the end, that is at a distance of about 1, 000 mm, about 830 mm.
  • the average spatial resolution is within the scanning range - depending on the direction - between 45 and 200 ⁇ .
  • the laser source can be operated with a red laser (wavelength 660 nm) or with a blue laser (wavelength 405 nm).
  • a single compact sensor 23 arranged at one of the scanning points A, B, C, D and E can serve exclusively to determine the outer contour of the products 17 so that the product supply 15 can be controlled in such a way on the basis of this product data that Weight-accurate portions 55 be.
  • a single compact sensor 23 may be sufficient if sufficiently known or geometrically simple products 17 are cut open.
  • the radius of the circular cross section can be determined from a partial contour 73 that can be detected by means of the compact sensor 23, and thus the cross-sectional area at the respective scanning point can be calculated. If the size of the cross-section but not its shape changes, ie if the cross-section of the product 17 is circular everywhere, but possibly varies along the longitudinal extent of the product 17, this is uncritical, since at each scanning point along the product 17 from the detectable sub-contour 73rd the cross-sectional area at this sampling point can be calculated. For the accuracy of the contour detection and thus the control of the product supply 15, it is thus harmless that by means of the single compact sensor 23, the "shadowed" partial contour 75, which is indicated in Fig. 3 by a dashed line, can not be detected.
  • the product support 83 can be closed with consideration contour on the height of the base in the evaluation.
  • the width of the base can be determined by the interruption of the scanning light line between the detectable part 73 produced on the product support 83 by means of the light source 29 (FIG. 2) the product contour and the detectable on the product support 83 part of the scanning light line can be determined.
  • either a single compact sensor 23 arranged in the slicer 10 at a sampling point or several compact sensors 23 arranged at one sampling point can perform one or more additional tasks or perform additional functions, as also already mentioned above have been. Some examples are shown in Fig. 5.
  • a compact sensor 23 may e.g. can be used to determine the product beginning 79.
  • a cross-sectional area 71 is shown in FIG. 5 by a dot-dash line.
  • control device 51 Due to such a "pre-recognition", the control device 51 is aware that all product slices cut off until reaching this cross-sectional area 71 can not be utilized and must be discarded in a manner known per se, eg by operating the portioning belt 65 against the normal conveying direction discard unreachable product section to the rear.
  • Such an initial control of the slicer 10 can consequently be optimized by means of an individual product contour detection carried out with the aid of one or more compact sensors 23 arranged in the slicer 10, since it is no longer necessary to resort to fixed values. Furthermore, by determining the product contour at the front product section 77, the thickness of the first utilizable product slice 53 can be predetermined in order to provide an initial value for the product feed 15 which is commensurate with the individuality of the respective product 17. Fixed values then no longer need to be used in this case. As already mentioned in the introductory part, even the product contour ascertained with a single compact sensor 23 can enable activation of the product feed 15, which delivers portions of weight 55 with sufficient accuracy without the aid of a balance arranged downstream of the cutting blade 21. As an alternative to such a replacement of a balance, the sampled product contour may be used to assist a loop including a downstream scale 81, thereby being able to achieve portions 55 at a much faster portioning weight within a predetermined tolerance.
  • a single compact sensor 23 can be used to determine the beginning of the product, the end of the product and / or the product length in order to use this information for an optimized operation of the product feed 15, which in particular avoids unnecessary dead times.
  • one or more compact sensors 23 arranged within the slicer 10 can therefore undertake a variety of tasks and optimize certain working processes of the slicer 10.
  • the compact sensors 23 or at least one of the compact sensors 23 can either be provided exclusively for this purpose or perform one or more of these tasks in addition to a contour detection, which serves to obtain weight-constant product slices or portions of product slices.
  • two compact sensors 23 are arranged above the products 17, each of which samples the product 17 at an angle of about 45 °.
  • the scan planes 33 each extend perpendicular to the direction of movement of the product 17. The scan planes 33 overlap so that the top of the product 17 can be illuminated simultaneously from different directions and also the side flanks of the product 17 can be detected at least substantially completely.
  • a compact sensor 23 is arranged approximately centrally above a product 17. Two further compact sensors 23 are located on both sides below the product 17 and capture the product contour from obliquely below.
  • two compact sensors 23 arranged one behind the other in the direction of movement of the products 17 are provided, which are oriented opposite to one another.
  • Such an arrangement makes it possible to detect such regions of products 17, which in particular have highly irregularly shaped surfaces, also on those surface regions which would not be visible by means of a single sensor 23.
  • Several such dual arrays of compact sensors 23 may be circumferentially distributed around the product 17.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Meat And Fish (AREA)

Abstract

L'invention concerne un procédé de tranchage de produits alimentaires au moyen d'un dispositif de tranchage qui présente une partie travail, une partie coupe et une partie transport, selon lequel les produits à trancher sont amenés sur une voie ou plusieurs voies à la partie coupe, et sont tranchés à l'extrémité de la partie coupe au moyen d'une lame en particulier rotative et/ou circulaire se déplaçant dans un plan de coupe, les produits à trancher sont balayés au niveau d'au moins une zone de balayage au moyen d'un capteur compact agencé dans la partie travail et fonctionnant sans contact, et le fonctionnement du dispositif de tranchage est commandé en fonction du contour extérieur des produits. Une partie du contour des produits est détectée au moyen du capteur compact, et une partie du contour des produits ne pouvant pas être détectée au moyen du capteur compact est prédéfinie.
EP17701704.3A 2016-02-05 2017-01-27 Tranchage de produits alimentaires Pending EP3386691A1 (fr)

Applications Claiming Priority (2)

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DE102016102034.6A DE102016102034A1 (de) 2016-02-05 2016-02-05 Aufschneiden von Lebensmittelprodukten
PCT/EP2017/051740 WO2017133972A1 (fr) 2016-02-05 2017-01-27 Tranchage de produits alimentaires

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FR3090444B1 (fr) * 2018-12-19 2020-12-18 6D Systems Installation et procede de traitement automatise, et notamment de decoupe en tranches, d’un produit rigide tel qu’un produit alimentaire surgele
WO2020126631A1 (fr) * 2018-12-19 2020-06-25 6D Systems Installation et procede de traitement automatise, et notamment de decoupe en tranches, d'un produit rigide tel qu'un produit alimentaire surgele

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Publication number Priority date Publication date Assignee Title
DE19604254B4 (de) 1996-02-06 2006-11-23 Weber Maschinenbau Gmbh & Co. Kg Verfahren und Vorrichtung zur Gewinnung gewichtskonstanter Portionen oder Scheiben aus aufgeschnittenen Lebensmittelprodukten
DE19820058C5 (de) * 1998-05-06 2010-10-21 Dipl.-Ing. Schindler & Wagner Kg Verfahren zum Zerteilen von Produktlaiben sowie Vorrichtung zu seiner Durchführung
DE00928257T1 (de) 1999-04-20 2005-12-15 Formax, Inc., Mokena Gerät zur automatischen abtastung eines produktes sowie aufschnittschneidemaschine mit einem solchen gerät
WO2004106020A1 (fr) * 2003-06-03 2004-12-09 Scanvaegt International A/S Appareil et procede de decoupage de portions de produits alimentaires
DE102005013732A1 (de) * 2005-03-22 2006-10-05 Reifenhäuser, Uwe, Dipl.-Ing. Verfahren und Vorrichtung zum Schneiden von strangförmigen Lebensmitteln
DE102006007496A1 (de) * 2006-02-17 2007-08-23 Weber Maschinenbau Gmbh & Co. Kg Portionierung von durch Aufschneiden erzeugten Produktscheiben
DE202006017089U1 (de) * 2006-11-07 2007-02-22 Holac Maschinenbau Gmbh Vorrichtung zum Schneiden von Lebensmitteln aus einem Produktstrang, insbesondere zum Schneiden von Koteletts
GB2446566B (en) * 2007-02-15 2009-01-07 Aew Delford Systems Ltd Control of food slicing machines
DE102007021510A1 (de) * 2007-05-04 2008-11-06 Maja-Maschinenfabrik Hermann Schill Gmbh & Co. Kg Vorrichtung zum Schneiden eines Gegenstands in einzelne Portionen
DE102009036682A1 (de) 2009-08-07 2011-02-17 Weber Maschinenbau Gmbh Breidenbach Aufschneiden von Lebensmittelprodukten
DE102012102649A1 (de) 2012-03-27 2013-10-02 Uwe Reifenhäuser Verfahren und Vorrichtung zum gewichtsgenauen Schneiden eines Lebensmittelstranges

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DE102016102034A1 (de) 2017-08-10

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