Knife arrangement, apparatus and method for slicing deheaded slaughtered fish having open abdominal cavity

Abstract

The invention relates to a knife device (10) for at least partially separating fish fillets (12) from deheaded slaughtered fish (11) having an open abdominal cavity (13), comprising: a transport device (21) having at least one transport element (22) for transporting the fish (11) in a transport plane (23) in a transport direction (24) with the tail (46) facing forward; at least one blade unit (25) which is arranged in the transport direction (24) and is designed for at least partially penetrating into the transport plane (23), the blade unit (25) comprising a blade (26) and a corresponding blade bearing support (27) which is spring-loaded by means of at least one spring element (28), the blade unit (25) being designed and adapted for at least partially penetrating into the transport plane (23) under a yield counter-pressure of the spine (14). The invention relates to a blade arrangement (10) for at least partially peeling and separating a fish fillet (12) from a rib (20) surrounding a belly cavity (13), characterized in that the blade arrangement (10) comprises an adjustment device (29) connected to a blade unit (25), in which the adjustment device (29) is configured and adapted to at least partially pivot a blade (26) around at least one pivot axis (30, 31) clockwise or counterclockwise (32, 33). The invention further relates to a corresponding device and to a corresponding method for separating fillets (12) from fish (11).

Description

Technical Field

[0001] The present invention relates to a knife apparatus for at least partially separating fillets from a headless, slaughtered fish with an open abdominal cavity, comprising: a transport device having at least one transport element for transporting the fish in a transport direction with the tail facing forward within a transport plane; at least one scraper unit arranged along the transport direction and configured to be at least partially inserted into the transport plane by means of a blade, wherein the scraper unit includes a scraper and a corresponding scraper abutment support by means of at least one spring element, wherein the scraper unit is configured and adapted to at least partially peel the fillets from the ribs surrounding the abdominal cavity under yielding counter-pressure of the spine.

[0002] Furthermore, the present invention relates to an apparatus for at least partially separating fillets from a headless, decapitated fish with an open abdominal cavity, comprising: a transport device having at least one transport element for transporting the fish in a transport direction with the tail facing forward in a transport plane; at least one back knife for exposing the dorsal bone up to the spine; at least one abdominal knife for exposing the abdominal bone up to the spine in the tail region; and at least one separating knife configured and adapted for separating the fillets from the spine, wherein the connecting meat remaining around the spine by the at least one abdominal knife and the at least one back knife is cut off.

[0003] Furthermore, the present invention relates to a method for at least partially separating fillets from a headless, slaughtered fish with an open abdominal cavity, comprising the steps of: transporting the fish in a transport plane with the tail facing forward in a transport direction by means of a transport device having at least one transport element; causing a scraper unit to at least partially penetrate the transport plane, the scraper unit comprising a scraper and a corresponding scraper abutting a support by means of at least one spring element; and, by means of the scraper unit, peeling the fillets at least partially away from the ribs surrounding the abdominal cavity under yielding counter-pressure of the spine. Background Technology

[0004] Such knife equipment, devices, and methods for separating fish fillets are well known in the art. Knife equipment for separating fish fillets is typically part of a composite device or machine that incorporates other knife equipment. In known devices / methods, in addition to conventional abdominal slicing knives, dorsal slicing knives, and separating knives for cutting and releasing ribs, corresponding scraping tools are integrated. These scraping tools, in particular, have cutting edges that scrape directly onto the ribs or vertebral protrusions. As a result, less fillet meat residue adheres to the bony frame compared to rigid rib knives partially used in similarly known devices, which increases yield. However, when using such scraping tools, it is advisable to perform the separation cuts in advance so that the remaining meat strips on each side of the spine are separated after the abdominal and dorsal slicing cuts and before the rib cuts. This is necessary because the scraper, located in the plane of the lower edge of the dorsal guide, peels the fillets from the ribs. This requires complete separation of the fillets and leads to more complex and specialized processing of the fish.

[0005] Furthermore, it has been shown that this type of cutting sequence leads to irregularities in the cutting guide, which impairs the quality and yield of the slicing results. Moreover, it is difficult to ensure that the separated fish fillets are always placed in a neat posture, such as lying flat with the skin side down. However, this is necessary for smooth, automated further processing (such as, for example, skinning). Additionally, using conventional equipment / methods typically only allows processing fish of uniform species or sizes. Scraping tools are designed for specific fish types, necessitating the appropriate selection of the positions and distances between the tools used. When there are significant differences between the fish to be processed, the likelihood of errors increases, leading to yield losses and damage to the fish being sliced.

[0006] There are also known devices with scraping tools that have wedge-shaped cutting edges and resilient abutment supports on both sides of the ventral and dorsal guides. These scraping tools operate just before reaching the end of the fish's abdominal cavity, exposing the stretched fillet to scraping forces. This results in a smoother cut surface and increased yield. Furthermore, the fillet is fully released by the separation cut after scraping, allowing it to be easily placed for further automated processing. Such known machines are suitable for various fish species, such as red snapper, tuna, and salmon, where the upper abdominal wall extends directly to the anus. However, it has been shown that these devices and methods are not satisfactory for other fish species, such as tilapia. Tilapia is a mass-farmed fish with a similar body shape and basic skeletal structure to red snapper, but with significant differences in quality and anatomy. Tilapia has strong, curved flank bones that are difficult to process with known scraping tools. Furthermore, the flank bones in tilapia are more loosely connected to the body, which can lead to bone tearing and low-quality products. Within the abdominal cavity of tilapia, there are internal protrusions of adipose tissue that connect to the cortical structure of the lower abdominal cavity. This presents a further challenge, as tilapia possess a single, large swim bladder compared to other fish that have two-part swim bladders.

[0007] A suitable device and method for processing tilapia is also known from WO02 / 03807A1. However, using such a device and method, only a rigid / fixed flank angle can be set for the scraping tool, especially the scraper. This has the consequence that the existing flank bones must always follow the direction of the cutting edge. This forced guidance can lead to cutting errors, resulting in the inability to produce boneless fillets. This leads to an increased amount of post-trimming work that must be done manually or automatically, but in each case it is associated with a considerable loss of yield. In general, separation using known devices and methods is only adjustable for specific fish sizes or species, thus only guaranteeing limited process reliability and versatility. Currently, the blade used is fixed at a certain angle, thus forcing the flank bones along the cutting edge. Since the flank bones are highly species-dependent and must always follow the cutting edge, it is possible that bones will be cut off in certain areas due to a lack of flexibility.

[0008] Furthermore, using known equipment and methods requires significant setup and cleaning time. Equipment must be manually adapted to the corresponding fish size or species, for example, by adjusting and positioning the gaps, distances, or angles of various tools accordingly. Typically, this necessitates further test runs and readjustments, which further increases time consumption and generates additional waste. Convenient, automated, and short tool changes are not possible with known equipment. Additionally, existing technologies cannot account for different fish sizes or species among the fish to be processed. Moreover, the installation space for the corresponding equipment and facilities is often limited, making cleaning difficult. Cleaning is only possible through extensive exposure of parts, which is associated with the risk of fish injury and additional time consumption.

[0009] Known equipment offers only limited possibilities for individualized cutting guidance. In various fish species, particularly tilapia, there are meaty areas within the abdominal cavity of slaughtered and opened fish that cannot be harvested using known equipment and methods, or the harvesting results are unsatisfactory. Known equipment, during slicing, is guided only by separating the meat from the ribs, without considering other areas or providing a wide range of options for different species. Summary of the Invention

[0010] Therefore, the object of this invention is to provide a cutting tool that ensures reliable, efficient, and individualized fish fillet production, thereby achieving the most complete possible separation or release of the meat from the fish skeleton. Furthermore, the object is to provide a corresponding device and a corresponding method.

[0011] The objective is achieved by the aforementioned device, wherein the blade assembly includes an adjustment device connected to the scraper unit, wherein the adjustment device is configured and adapted to allow the scraper to pivot at least partially clockwise or counterclockwise about at least one pivot axis. This provides the advantage that at least the scraper is at least partially pivotable about at least one pivot axis, preferably about two pivot axes. In a preferred embodiment, the scraper and scraper abutment support are synchronously pivotable clockwise or counterclockwise by means of the adjustment device to configure and adapt to uniform variability of the scraper unit during fish fillet separation. In this way, the scraper is optimized according to the fish anatomy of the fish to be processed to perform fish fillet separation from the skeleton by means of the blade assembly. At least partial variability of the scraper about at least one pivot axis allows for different arrangements of the scraper unit relative to the transport plane. Through at least one variability in the position of the scraper, the alignment of the scraper relative to the transport plane is set to each other, thereby achieving high-precision fish fillet separation. The scraper is preferably positioned as close as possible to the fish skeleton to separate the fillets without damaging or cutting the skeleton or parts thereof. In this way, waste or unseparated meat adhering to the bones after slicing can be reduced, and thus, the yield during slicing can be increased. This results in higher efficiency of the blade assembly on the one hand, and lower workload for the subsequent recovery of remaining meat on the bones or the removal of bones (parts) on the other. Furthermore, this method can increase the quality of the final product because larger, coherent pieces of meat are obtained. The solution according to the invention provides dynamic adjustment of the scraper unit, particularly the scraper itself, relative to the transport plane about at least one pivot axis without time-consuming tool changes.

[0012] In particular, due to the pivotability of the scraper, toolless changes in the position of at least the scraper relative to the fish transported by means of a transport device are possible. Because the scraper is adjustable or variable, it can be preset or altered as needed by means of an adjustment device through individualized and at least partial changes about at least one pivot axis throughout the processing. In other words, for example, by pivoting at least partially about at least one pivot axis according to the fish species, size, or anatomy, the scraper can be adapted from a preset position to enlarge or reduce the processing area, allowing the fish fillets to be separated from the skeleton as completely as possible. Preferably, no tools are required to construct and adapt the pivotability of the scraper about the at least one pivot axis. The pivot axis can also be referred to as the axis of rotation. The pivoting or rotation of at least the scraper is particularly clockwise or counterclockwise about the pivot axis. Preferably, only partial pivoting of the scraper is provided to construct and adapt partial changes in the alignment of the scraper as needed. More preferably, the adjustment device is constructed and adapted to pivot the scraper at a small angle, preferably 1° to 20°, thus being adjustable, particularly depending on the type of fish to be sliced. In short, the present invention enables product-specific scraper preset / modification based on the specific fish being sliced, thereby achieving efficient and adaptable separation of fish fillets.

[0013] In the context of this invention, "fish" generally includes all (edible) fish species suitable for industrial / machine processing. For example, white-fleshed fish such as cod or haddock, especially tilapia, can be used. However, the equipment is equally adaptable to other fish species, particularly salmon. Headless and gutted fish each possess different anatomical structures, which are particularly determined by age, sex, species, origin, feed, and gene pool. Fish anatomy therefore includes the anatomical features or parameters of the fish.

[0014] As a transport device, all suitable devices for transporting fish along the transport direction in a specific direction within the transport plane are considered. For this purpose, fish are placed or arranged on at least one transport element of the transport device. The transport device preferably includes a drive mechanism and a continuous transport mechanism for transporting the fish or transport element along the transport direction or transport path. More preferably, the at least one transport element is constructed and adapted as a plurality of fish saddles for stably supporting the fish in its ventral cavity for transport and processing by means of a scraper unit. The fish saddles are particularly arranged on a continuous transport device. In a possible embodiment of the invention, it is conceivable that the fish are transported not tail-forward, but head-forward; for this, a correspondingly offset and adapted scraper unit is required, which is guided accordingly against the fish. The transport plane is substantially determined by the plane of symmetry of the fish transported by means of the transport element. Therefore, the transport plane is preferably substantially perpendicular to the transport direction and extends along the corresponding transport path of the fish to be transported.

[0015] A scraper unit for separating fish fillets includes a scraper and a scraper support to perform the required scraping process. The scraper unit can therefore explicitly include other components, particularly the scraper's suspension mechanism and the drive and control mechanisms.

[0016] Preferably, the cutting tool includes at least one control device and / or at least one computing unit. The at least one control device and / or at least one computing unit specifically achieves the following purpose: to change the alignment of the scraper unit by means of an adjusting device, i.e., in particular, to pivot it. Furthermore, the process of separating the fish fillets can be monitored by means of the at least one control device and / or the at least one computing unit, and adjustments can be made as necessary. More preferably, the at least one control device and / or the at least one computing unit can be integrated into and / or operatively connected to the adjusting device, such that the at least one control device and / or the at least one computing unit does not represent a separate component.

[0017] An advantageous embodiment of the invention features that the adjusting device includes at least one adjusting element, particularly a drive element, wherein the at least one adjusting element is configured and adapted to enable and adapt the scraper to at least partially pivot about the at least one pivot axis, either clockwise or counterclockwise. This achieves a high degree of adaptability and flexibility for the scraper. The adjusting element is configured such that the scraper can pivot about the at least one pivot axis in both clockwise and counterclockwise directions. In this way, the adjusting element can be easily adapted to different requirements and conditions, thereby improving the efficiency and performance of the scraper blade. Furthermore, the possibility of pivoting in both directions opens up a wide range of applications, making the blade equipment according to the invention particularly versatile and adaptable for different fish sizes or species. Moreover, the movement of the scraper at different angles enables efficient and targeted separation of fish fillets. The pivotability of the scraper via the adjusting element also facilitates operation and maintenance.

[0018] A preferred further improvement of the invention is that the adjusting device is adapted to set a defined angle and / or a defined angle curve of the scraper relative to the transport plane, particularly to construct a separation of the fish fillets at a predetermined cutting angle and / or cutting angle curve. In this way, it is possible to specifically set the defined angle and / or corresponding angle curve of the scraper relative to the transport plane, particularly for separating the fish fillets at a predetermined cutting angle and / or cutting angle curve. This allows for demand-based separation of fish fillets according to the skeletons of various fish. Consequently, it is possible to increase the product quality of the fish fillets to be separated while maintaining high yield, which increases the efficiency of the blade equipment according to the invention while reducing production costs. Overall, this further improvement of the invention significantly improves accuracy, efficiency, and economy, allowing for wide application in various fields.

[0019] An advantageous embodiment of the invention is characterized in that the at least one pivot axis is constructed and adapted to be substantially parallel to the transport plane. This preferred embodiment of the invention has several advantages. First, the substantially parallel alignment of the pivot axis with the transport plane enables precise guidance and alignment of the scraper along the desired plane, resulting in a more consistent and accurate working manner. Furthermore, this arrangement of the pivot axis increases the stability and reliability of the scraper's movement, leading to reduced wear and a longer service life. Additionally, the substantially parallel alignment of the pivot axis with the transport plane facilitates the arrangement of the scraper relative to the fish used for separating the fillets and allows for intuitive and better control of the scraper's movement. Overall, this improvement contributes to enhancing the accuracy, stability, and user-friendliness of the invention, making it particularly suitable for applications requiring precise and reliable processing of fish. This at least allows the scraper to pivot at a predetermined angle relative to the transport plane, thus making the scraper's distance variable. Preferably, the area of ​​the scraper is pivotable about the pivot axis starting from the transport plane, thus making the angle of attack variable during slicing. In the context of this invention, "substantially parallel to the transport plane" means that at least one pivot axis is constructed and adapted to be parallel or approximately parallel, i.e., the deviation from the transport plane is at most ±10°, and particularly preferably within the range of ±2 to 5°.

[0020] A preferred further improvement of the invention is that the at least one adjusting element is constructed and adapted to be at least one pneumatic, hydraulic, electrical, and / or electromagnetic actuation element, particularly a servo motor for controlling partial pivotability around the at least one pivot axis. If more than one pivot axis is provided, the adjusting device preferably includes two corresponding adjusting elements, particularly two actuation elements for constructing pivotability. In one aspect, this embodiment achieves particularly precise and controlled pivoting movement of the scraper. The use of pneumatic, hydraulic, electrical, or electromagnetic actuation elements, particularly servo motors, enables extremely precise and minute adjustments, resulting in high machining accuracy. Furthermore, by selecting appropriate types of actuation elements, the invention can be individually adapted to different requirements and applications. This increases the flexibility of the adjusting element or scraper in application and targeted use. The adjusting element enables rapid and reliable adjustment of the scraper's movement, thereby reducing machining time and optimizing the entire production process, especially output and post-processing workload. The use of servo motors and at least one adjusting element increases the reliability and controllability of the tool assembly. This minimizes downtime and contributes to improved overall performance.

[0021] According to another preferred embodiment of the invention, the knife equipment further includes at least one sensing unit located upstream of the search scraper unit, configured and adapted for sensing fish anatomy, particularly the height, length, width, and / or abdominal cavity location of the fish. In the context of this invention, "fish anatomy" should be understood as particularly the height, length, width, and / or abdominal cavity location of the fish. The knife equipment according to the invention is configured and adapted for processing fish meat or at least a portion thereof based on its specific fish anatomy. For this purpose, the fish is headless and at least partially or mostly gutted when supplied to the knife equipment. Depending on the configuration of the knife equipment, gutting and head removal devices can be directly arranged upstream in the processing line. As a "sensing unit," essentially any sensing unit capable of sensing fish or its parts can be provided; for this purpose, devices such as cameras, sensors, X-ray devices, photoelectric devices, etc., can be used to sense the fish or its parts. Preferably, the sensing unit thus represents a mechanical, electrical, and / or electronic device configured and adapted for sensing fish anatomy. The sensing unit is configured to sense and / or determine data related to fish size, and preferably senses fish anatomy in the form of one or more datasets for further preferably storage and subsequent use. The fish anatomy data therefore includes not only body dimensions such as height, length, width, and abdominal cavity location, but also, in particular, the relationships, shapes, colors, and strengths between fish to be processed. The fish anatomy data is preferably stored in a database. The parameters of the fish anatomy sensed by the sensing unit should specifically include parameters for demand-based control of the corresponding blade elements, explicitly including other parameters that can be used in subsequent processing steps. The goal is to sense the fish anatomy as best as possible to locate meat areas so that they can be released as losslessly and non-destructively as possible by means of a scraper unit; further preferably, the sensing unit can be configured to locate the skeleton or bones so that the corresponding meat reclaiming can subsequently be adapted to the bone positioning. Depending on the fish parameters to be sensed, the corresponding sensing unit includes a suitable sensing system, such as a sensor system, rotary encoder, optical sensing module, weighing device, X-ray device, sound sensor, etc. Therefore, the sensing unit includes mechanical, electronic, optical components or combinations thereof, which are adapted to sense and / or determine data related to the size of the fish. The sensing unit particularly includes elements that can determine the height, length, width, and / or abdominal cavity location of the fish and / or the location of its fillets, spine, and / or bones, especially the location of the ribs surrounding the abdominal cavity, i.e., those that can be directly sensed and / or determined via a corresponding computational model. The sensing unit is further preferably fixedly arranged in the area of ​​the transport device. More preferably, multiple sensing units are arranged at different locations to construct multi-part sensing of the fish. In another preferred embodiment, the sensing unit further includes at least one computing unit for processing or evaluating the sensed fish data.In other advantageous embodiments, the computing unit is a separate component for performing the corresponding computing operations.

[0022] A preferred embodiment is characterized in that the adjustment device is adapted to set at least partial pivotability of the scraper about the at least one pivot axis based on the fish anatomy sensed by the sensing unit. Thus, the adjustment device, in conjunction with at least one sensing unit, enables individualized and demand-based adaptation of the scraper unit, particularly the scraper itself, to the fish anatomy, particularly the fish's height, length, width, and / or abdominal cavity location, or to the individualized and demand-based adaptation of the position of the fish or parts thereof relative to the corresponding transport element. This provides the possibility of individualized processing of fish according to their anatomy, leading to optimized yield and quality.

[0023] A preferred further improvement of the invention is that the adjustability of the pivotability according to the fish anatomy is performed automatically or automatically, wherein during the separation of fish fillets along the transport direction, the scraper is configured and adapted to at least one variability in clockwise and / or counterclockwise rotation about at least one pivot axis. This further improvement enables automatic or automated changing of the scraper's position relative to the transport plane about at least one pivot axis during slicing processing while transporting the fish along the transport direction. This automated method enables adaptive and specific processing of the fish according to its individual anatomy. The possibility of moving the scraper in at least two rotational directions allows the scraper to be set such that its angle can be increased or decreased, allowing for efficient and gentle separation of fish fillets and improving the quality and versatility of fish processing.

[0024] In another advantageous embodiment of the invention, the adjustment device includes at least one measuring element for measuring and / or sensing the angular position of the scraper. Therefore, the position of the scraper can be monitored and specifically changed during operation. By integrating the measuring element, deviations or changes in the angular position of the scraper can be detected and corrected or adapted accordingly. This helps maintain uniform or properly fitted slices, thereby further increasing the efficiency and quality of fish processing.

[0025] Another advantageous embodiment of the invention features that the at least one adjusting element is configured and adapted to adjust the scraper unit, in particular the scraper, to a cleaning position, wherein the angle of the scraper relative to the transport plane is preferably between 10° and 150°, preferably between 30° and 120°, and particularly preferably between 45° and 90°. This adaptability enables simple and efficient cleaning of the scraper unit, which significantly improves the possibility of maintenance and cleaning of the equipment. Targeted control of the angle within this range allows for particularly thorough and safe cleaning, which in turn increases the quality of fish processing.

[0026] Another advantageous embodiment features a spring force of the scraper against the at least one spring element of the support, configured and adapted to be adjustable in a variable manner, particularly automatically or automatically, to set a variable spring load during the separation of the fish fillets. In this way, an adaptive spring force is ensured during fish slicing. This method achieves a dynamic adaptation of the spring force to specific requirements during the slicing process, particularly to the fish's anatomy, especially its skeleton. This automatic or automated adjustment contributes to uniform and gentle slicing and ensures the fish is processed with optimal precision and efficiency. This increases the efficiency and quality of the slicing process.

[0027] According to an advantageous embodiment of the invention, the cutting device further includes at least one trimming element, particularly a driven or drivable cutting element, configured and adapted for trimming a region within the abdominal cavity of the fish. The trimming element is an additional component of the cutting device to further optimize fish processing or further increase yield. During processing, it may be desirable, especially depending on the level of automation of the equipment, to remove certain portions from the abdominal cavity of the fish in order to maintain the final product at the highest quality level or to harvest additional meat components. The trimming element makes it possible to accomplish this task efficiently and precisely. Through its driven or drivable construction, it is capable of operating with the required processing power and precision to reliably trim the desired area. This not only improves the efficiency of the processing but also reduces labor input. Integrating this trimming element into the cutting device expands the functionality of the entire device. This enables comprehensive processing of the fish, including not only slicing but also trimming a portion of the abdominal cavity. Overall, this results in improved quality and precision in fish processing and helps meet the industry's highest standards. Generally, trimming, especially when removing a region within the abdominal cavity, can also be understood as cutting, slicing, separating, etc. The trimming element is preferably configured for removing portions of the abdominal flap and / or the flank bones or portions thereof. More preferably, the at least one trimming element is constructed and adapted to be synchronized with the scraper unit. In another advantageous embodiment, the scraper unit includes the at least one trimming element so as to be constructed and adapted to change the at least one trimming element simultaneously with a change in the scraper unit.

[0028] In another preferred embodiment of the invention, the cutting tool includes at least one trimming element adjustment device connected to the at least one trimming element, wherein the trimming element adjustment device is configured and adapted to pivot the trimming element at least partially clockwise or counterclockwise about at least one pivot axis. Integrating this trimming element adjustment device is advantageous because it enables targeted adjustments to the trimming element during processing. The trimming element can pivot to different angular positions to meet specific requirements in fish processing. This allows for targeted processing of the fish, enabling efficient removal of corresponding areas from the abdominal cavity. The possibility of pivoting the trimming element both clockwise and counterclockwise increases the flexibility and adaptability of the trimming element adjustment device. This is crucial for effectively processing different fish species and sizes, as different requirements can be met during the trimming process. This embodiment helps increase the efficiency and precision of fish processing, which in turn improves the quality of the final product and meets the requirements of the food industry.

[0029] An advantageous embodiment of the invention is characterized in that the at least one trimming element and the scraper unit are constructed and adapted to correspond to each other, wherein the trimming is tailored to the fish fillets to be separated. Through the corresponding construction of the at least one trimming element and the scraper unit, they can be coordinated accordingly to achieve efficient and complete separation of the fish fillets. This means that the trimming of the fish, especially the removal of the corresponding area in the abdominal cavity, can be precisely adapted to the individual characteristics of the fish fillets to be separated. This adaptability to the fish fillets to be separated is relevant because different fish species or sizes can place different requirements on the trimming process. Through this adaptation, fish processing can be optimized, thereby increasing efficiency and significantly improving the quality of fish products. Therefore, the present invention provides a flexible and precise solution tailored to different fish species and sizes for the diverse needs of the fish processing industry.

[0030] Furthermore, the aforementioned objective is achieved by the aforementioned device, which comprises at least one blade assembly having at least one scraper unit configured and adapted to, according to one or more of the above embodiments, at least partially peel and separate fish fillets from the ribs surrounding the abdominal cavity under the yielding counter-pressure of the spine. This device offers numerous advantages for fish processing, particularly significantly improving efficiency and precision, as it enables rapid and accurate separation of fish fillets. This results in increased production speed and reduced labor input. In this way, more complete separation of fish fillets is achieved, which increases output and reduces the need for subsequent processing. Furthermore, the device is designed to separate fish fillets from the ribs with high precision and uniformity, thereby improving product quality. The device operates under the yielding counter-pressure of the spine, ensuring that slicing is performed without damaging the spine and is carried out as completely as possible during fish fillet separation, thus maintaining the quality of the fillets. The adjustable angle of the scraper unit allows the device to be adapted to different fish species and sizes, expanding its applicability in the fish processing industry. The automation of the device greatly facilitates work and reduces the physical burden on employees, contributing to an improved working environment. Finally, the equipment leads to cost savings by increasing operational efficiency and optimizing fish fillet production, which in turn increases profits.

[0031] To avoid repetition, with regard to the device according to the invention, reference is made to the advantages already detailed in the description relating to the knife equipment according to the invention. These advantages apply in a similar manner to the specified device according to the invention.

[0032] Furthermore, the aforementioned objective is achieved by means of an adjusting device that allows the scraper to pivot at least partially clockwise or counterclockwise about at least one pivot axis. This provides the advantage that at least the scraper is at least partially pivotable about at least one pivot axis, preferably about two pivot axes. In a preferred embodiment, the scraper and the scraper abutting the support are simultaneously pivotally adjusted clockwise or counterclockwise by means of an adjusting device to construct and adapt a uniform variability of the scraper unit during fish fillet separation. In this way, the scraper is optimized according to the fish anatomy of the fish to be processed to perform fish fillet separation from the skeleton by means of a blade assembly. The at least partial variability of the scraper about the at least one pivot axis allows for different arrangements of the scraper unit relative to the transport plane. Through at least one variability in the scraper's position, the alignment of the scrapers relative to the transport plane is set to each other, thereby achieving high-precision fish fillet separation. The position of the scraper is preferably selected such that it separates the fish fillet as close as possible to the fish skeleton without damaging or cutting the skeleton or parts thereof. In this way, waste or unseparated meat adhering to the bone after slicing can be reduced, thereby increasing the yield during slicing. Consequently, the quality of the final product is increased because larger, cohesive pieces of meat are obtained. The solution according to the invention provides dynamic adjustment of the scraper unit, particularly the scraper itself, relative to the transport plane about at least one pivot axis, without the need for time-consuming tool changes.

[0033] To avoid repetition, reference is made to the advantages already detailed in the description relating to the knife equipment and the device according to the invention, with regard to the method according to the invention. These advantages are similarly applicable to the specified method according to the invention.

[0034] Another advantageous embodiment of the invention is characterized by the scraper being pivoted at least partially clockwise or counterclockwise about the at least one pivot axis by means of at least one adjusting element including an adjusting device, in particular a driving element.

[0035] In a preferred embodiment of the invention, the adjusting device sets a defined angle and / or a defined angle curve of the scraper relative to the transport plane, particularly to separate the fish fillets at a predetermined cutting angle and / or a predetermined cutting angle curve. In another preferred embodiment of the invention, the at least one adjusting element is configured and adapted to adjust the scraper unit, particularly the scraper, to a clean position, wherein the angle of the scraper relative to the transport plane is preferably between 10° and 150°, preferably between 30° and 120°, and particularly preferably between 45° and 90°.

[0036] An advantageous further improvement is that the at least one pivot axis is constructed and adapted to be substantially parallel to the transport plane.

[0037] Advantageously, the fish's anatomical structure, particularly its height, length, width, and / or abdominal cavity location, is sensed by a sensing unit located upstream of the scraper unit.

[0038] Particularly preferably, the partial pivotability of the scraper around the at least one pivot axis is set based on the fish anatomy sensed by the sensing unit.

[0039] A preferred further improvement of the invention is that the pivotability of the scraper, according to the fish anatomy, is set automatically or in an automated manner, wherein during the separation of the fish fillets along the transport direction, at least the scraper pivots clockwise and / or counterclockwise about the at least one pivot axis.

[0040] Another advantageous embodiment of the invention is characterized by measuring and / or sensing the angular position of the scraper by means of at least one measuring element.

[0041] Another advantageous embodiment is characterized in that the spring force of the at least one spring element against the support of the scraper is variable, especially set automatically or in an automated manner, so as to set a variable spring load during the separation of the fish fillet.

[0042] According to an advantageous embodiment of the invention, the area within the abdominal cavity of the fish is trimmed by means of at least one trimming element, particularly a driven or drivable blade element.

[0043] In another preferred embodiment of the invention, the at least one trimming element is adjusted by means of at least one trimming element adjustment device, which pivots at least partially clockwise or counterclockwise about at least one pivot axis.

[0044] Preferably, the at least one trimming element and the scraper unit are configured and adapted to correspond to each other, wherein the fish is trimmed according to the fish fillets to be separated.

[0045] Particularly preferably, the method according to the invention is performed using a knife tool according to the invention and / or a device according to the invention.

[0046] Other advantages derived from the method have been described in conjunction with the tooling and equipment; please refer to the relevant paragraphs to avoid repetition.

[0047] Other advantageous and / or beneficial features, as well as further improvements and preferred embodiments of the invention, are derived from the sub-claims and the description. Particularly preferred embodiments of the knife apparatus, the device, and the method according to the invention will be explained in more detail with reference to the accompanying drawings. Attached Figure Description

[0048] Figure 1 This is a perspective view of the knife equipment according to the present invention.

[0049] Figure 2a To create a schematic diagram of the cross-section of the fish body used for processing,

[0050] Figure 2b Another schematic diagram of a fish body arranged on a transport element.

[0051] Figure 3a for Figure 1 The diagram shows a front view of the cutting tool assembly, with an indicated cutting profile.

[0052] Figure 3b for Figure 3a The schematic cross-sectional view of the cutting tool shown is along the cutting contour.

[0053] Figure 4 A schematic front view of the device according to the present invention, and

[0054] Figure 5 This is a side view of the device according to the present invention. Detailed Implementation

[0055] Referring to the above figures, the knife fitting according to the invention, the device according to the invention, and the method according to the invention will be explained in more detail below.

[0056] The knife device 10 shown in the attached figure is constructed and adapted for at least partially separating fish fillets 12 from a headless, butchered fish 11 having an open abdominal cavity 13. The fish 11 intended for processing is in the form of a headless, butchered fish carcass 11 with an open abdominal cavity 13, as shown in the attached figure. Figure 2a and 2b As shown in the figure, the simplified fish body 11 depicted is that of a tilapia species. However, specific species are irrelevant to this invention, and it is also possible to process other species 11 using the cutting tool 10 according to the invention, wherein, if necessary, the size, distance, and speed will be adapted to the respective fish species. The tilapia species 11 typically have a relatively prominent main bone 14, which is often referred to as the spine 14. Figure 2a The skeleton 15 or bony framework 15 is schematically shown, from which the dorsal bone 16, extending along the entire length of the fish 11, branches upward, and the ventral bone 17 branches downward in the region preceding the caudal fin 19. In the region of the abdominal cavity 13, the bony framework 15 is arched, with the flank bones or ribs 18 extending from the vertebral bone 14. The vertebral bone 14 can also generally be referred to as the spine 14, while the dorsal bone 16 and the flank bones or ribs 18 are summarized and simplified as ribs 20.

[0057] Figure 1 and Figure 3 to Figure 5 Each schematically illustrates one embodiment of the knife apparatus 10 according to the invention, comprising: a transport device 21 having at least one transport element 22 for transporting a fish 11 in a transport plane 23 with its tail 46 facing forward along a transport direction 24. The knife apparatus 10 also includes at least one scraper unit 25 arranged along the transport direction 24 and configured to at least partially penetrate the transport plane 23, wherein the scraper unit 25 includes a scraper 26 and a corresponding scraper abutment support 27 for applying a spring load by means of at least one spring element 28. The scraper unit 25 is configured and adapted to at least partially scrape and separate the fish fillet 12 from the ribs 20 surrounding the abdominal cavity 13 under the yielding counter-pressure of the spine 14. Figure 2a and 2b In China, especially Figure 2a The anatomical structure of fish 11 is schematically shown in the diagram. The transport device 21 is at least partially shown in... Figure 1 and Figure 3 to Figure 5 In China, especially in Figure 1 The transport direction 24 and transport plane 23 are shown. Figure 1 In this embodiment, the transport device 21 exemplarily includes two transport elements 22, which are configured and adapted herein as a schematic transport saddle for arranging the fish 11. Preferably, the transport device 21 is configured as an infinitely circulating conveyor having a plurality of transport elements 22. Figure 2b The image shows a side view of the corresponding transport element 22, on which fish 11 are exemplarily arranged. The specific construction of the transport element 22 is irrelevant to the present invention, wherein at least a reliable arrangement of the fish 11 is ensured so that they can be processed accordingly by means of the cutting device 10.

[0058] According to the invention, the blade assembly 10 is characterized in that it includes an adjustment device 29 connected to the scraper unit 25, wherein the adjustment device 29 is configured and adapted to pivot the scraper 26 at least partially clockwise or counterclockwise about at least one pivot axis 30, 31 32, 33. Figure 1 and Figure 3 to Figure 5The figure exemplarily illustrates a blade assembly having a first pivot axis 30 and a second pivot axis 31, which are pivotally configured and adapted to scrapers 26 by means of an adjustment device 29 about these pivot axes in a manner that is at least partially clockwise or counterclockwise 32, 33. In the figure, the scraper 26 is configured as a pointed blade element having a cutting edge that widens in the transport direction 24. Correspondingly, the scraper abutment support 27 is configured to ensure a corresponding counter-pressure during the separation of the fish fillets 12. At least one spring element 28, not shown in detail in the figure, is specifically provided for elastically mounting the scraper abutment support 27 during the separation process. In a preferred embodiment, the spring force of at least one spring element 28 of the scraper abutment support 27 is configured and adapted to be adjustable in a variable manner, particularly automatically or automatically, to set a variable spring load during the separation of the fish fillets 12.

[0059] Each embodiment of the knife device 10 shown in the figures includes only one corresponding knife device 10 or one scraper unit 25 on one side along the transport direction 24. Preferably, such a knife device 10 or device 40 has two scraper units 25, which are particularly preferably arranged mirror-symmetrically to each other along the transport plane 23 in order to simultaneously separate and fit the fish fillets 12.

[0060] The transport plane 23 and each of the various pivot axes 30, 31 are shown schematically and simplified in the figures, specifically to illustrate their positions relative to the knife assembly 10 or the device 40 according to the invention. The position of the scraper unit 25 relative to the transport plane 23 of the fish 11 is variable, and particularly adjustable, by means of the adjusting device 29, thereby providing adapted separation of the fish fillets 12. Figure 3a (shown in it) Figure 3b As can be seen from the cross-sectional view (with its cutting axis AA 34), by means of the adjusting device 29 pivoting clockwise or counterclockwise 32, 33 about the pivot axis 30, the distance between the transport plane 23 and at least the scraper 26 can be increased and / or decreased. In a preferred embodiment of the invention, at least one pivot axis 30 is constructed and adapted to be substantially parallel to the transport plane 23.

[0061] The features and further modifications described below, whether considered individually or in combination, represent preferred embodiments. It is explicitly noted that features summarized in the claims and / or the specification and / or the drawings, or described in a common embodiment, can also functionally and independently further improve the knife fitting 10 or device 40 further described above.

[0062] Preferably, the adjusting device 29 includes at least one adjusting element 35, particularly a drive element, wherein the at least one adjusting element 35 is configured and adapted to configure and adapt at least partially pivotable of the scraper 26 about the at least one pivot axis 30, 31 clockwise or counterclockwise 32, 33. In a preferred embodiment, the adjusting device 29 is adapted for setting a defined angle 36 and / or a defined angle curve of the scraper 26 relative to the transport plane 23, particularly configured to separate the fish fillets 12 at a predetermined cutting angle 36 and / or cutting angle curve. Figure 4 The diagram illustrates an exemplary corresponding angle 36 or cutting angle 36 between the transport plane 23 and the position of the scraper 26. This angle 36 or cutting angle 36 can be adjusted accordingly depending on the fish size, fish species, and / or the desired scraping process, especially during the transport of the fish 11 along the transport direction 24.

[0063] exist Figure 1 , Figure 3b and Figure 5 The diagram shows a pivot axis 30 extending substantially parallel to the transport plane 23. More preferably, alternatively, or additionally, at least one other pivot axis 31 is provided, such as... Figure 1 , Figure 3b and Figure 5 As shown. The at least one other pivot axis 31 is also constructed and adapted to allow the scraper 26 to pivot at least partially clockwise or counterclockwise. In this way, another small-scale and demand-oriented possibility is provided for changing the distance between the scraper 26 and the transport plane 23.

[0064] In a preferred embodiment, the at least one adjustment element 35 is configured and adapted to be at least one—not shown in detail in the figures—pneumatic, hydraulic, electrical and / or electromagnetic actuation element, particularly a servo motor for controlling the partial pivotability of the at least one pivot axis 30, 31.

[0065] According to another advantageous embodiment, the knife device 10 also includes at least one sensing unit 37 located upstream of the scraper unit 25, configured and adapted for sensing fish anatomy, particularly the height, length, width, and / or abdominal cavity location of the fish 11. Figure 1 and Figure 3b In this figure, a corresponding sensing unit 37 is schematically arranged upstream of the scraper unit 25, which is specifically configured for non-contact sensing of the fish anatomy 39 of the fish 11 to be processed. For this purpose, a sensing region 38 is schematically shown in the figure, which may represent, for example, infrared radiation, X-ray radiation, or a camera sensing region. The sensing region 38 includes at least a transport plane 23 to sense the fish 11 being transported along the transport direction 24. However, different sensing units 37 for sensing the fish anatomy 39, for example, constructed and adapted for mechanical sensing, are also conceivable.

[0066] Preferably, the adjustment device 29 is adapted to set at least a portion of the pivotability of the scraper 26 around the at least one pivot axis 30, 31 based on the fish anatomy 39 sensed by the sensing unit 37. For this purpose, the adjustability of the pivotability is further preferably performed automatically or in an automated manner based on the fish anatomy 39, wherein at least a portion of the variability of the scraper 26 around the at least one pivot axis 30, 31 in clockwise and / or counterclockwise directions 32, 33 is constructed and adapted during the separation of the fish fillets 12 along the transport direction 24. Other mechanisms can be provided to sense, in particular, the actual state or actual position of the corresponding adjustment element 35 or the position of the scraper 26 with respect to the transport plane 23. For this purpose, the adjustment device 29 includes, for example, at least one—not shown in detail in the figures—measuring element for measuring and / or sensing the angular position of the scraper 26. The sensed angular position is, for example, the absolute angular position of the scraper 26 relative to the ground and / or the angular position relative to the transport plane 23. Preferably, absolute or incremental sensing of angular position is constructed and adapted by means of the at least one measuring element.

[0067] In another preferred embodiment (not shown in the figures), the at least one adjusting element 35 is configured and adapted to adjust the scraper unit 25, in particular the scraper 26, to a cleaning position, wherein the angle 36 of the scraper 26 relative to the transport plane 23 is preferably between 10° and 150°, preferably between 30° and 120°, and particularly preferably between 45° and 90°.

[0068] The knife fitting 10 or device 40 according to the invention preferably further includes at least one trimming element 41, particularly a driven or drivable knife element 42, which is configured and adapted for trimming the area within the abdominal cavity 13 of the fish 11. In a preferred embodiment, the knife element 42 is as follows: Figure 1 The illustrated configuration is a driven circular blade 42. Preferably, at least one trimming element adjustment device 43 is also provided, connected to the at least one trimming element 41, wherein the trimming element adjustment device 43 is configured and adapted to allow the trimming element 41 to pivot at least partially clockwise or counterclockwise 32, 33 about at least one pivot axis 44. The trimming element 42 is specifically configured for trimming a region within the abdominal cavity 13 of the fish 11. Such a region is considered a “meat bulge” within the abdominal cavity 13 of the fish 11, which can be trimmed by means of the at least one trimming element 41 to increase the yield of meat components. Furthermore, this region can be the ventral flap, i.e., the lower (abdominal) line of the flank meat. In tilapia, this part usually forms particularly well-developed cartilaginous tissue together with the flank bone, making lateral cutting with the scraper 26 particularly difficult and capable of errors, such as incorrect cuts or “blockages” in the corresponding knife equipment 10 or device 40. Preferably, the trimming element 41 is as follows: Figure 1The trimming element 41 is arranged upstream or within the region of the scraper unit 25. However, it is also possible to arrange it downstream of the scraper unit 25 for corresponding trimming. More preferably, the at least one trimming element 41 and the scraper unit 25 are constructed and adapted to each other, wherein the trimming is set according to the fish fillet 12 to be separated.

[0069] The present invention also relates to an apparatus 40, which is constructed and adapted for separating fish fillets 12 at least partially from a headless slaughtered fish 11 having an open abdominal cavity 13. Figure 4 and Figure 5 The embodiment of the device 40 according to the invention shown includes: a transport device 21 having at least one transport element 22 for transporting a fish 11 along a transport direction 24 with the tail 19 facing forward within a transport plane 23; at least one back knife 45 for exposing the dorsal bone 16 up to the spine 14; at least one abdominal knife for exposing the abdominal bone 17 up to the spine 14 in a tail region 46; and at least one separating knife configured and adapted for separating fish fillets 12 from the spine 14, wherein the connecting meat left around the spine 14 by the at least one abdominal knife and at least one back knife 45 is cut off. Such separating knives, abdominal knives, and back knives 45 are known in the prior art and are not shown in more detail in the figures. In such a device 40, the fish 11 is transported manually, automatically, or autonomously within a transport plane 23 along the transport direction 24 by means of the transport device 21 in engagement with the respective knives. During this transport along the transport direction 24, the fish 11 is processed accordingly by the respective knives to expose the dorsal bone 16, expose the abdominal bone 17, or separate the fish fillets 12.

[0070] According to the invention, the device 40 is characterized in that it includes at least one knife apparatus 10 having at least one scraper unit 25, said scraper unit 25 being configured and adapted to scrape at least partially separate the fish fillet 12 from the ribs 20 surrounding the abdominal cavity 13 under the yielding counter-pressure of the spine 14. The knife apparatus 10 thus includes the features of at least one embodiment of the knife apparatus 10 according to the invention described above.

[0071] The present invention also relates to a method for at least partially separating fish fillets 12 from a headless, slaughtered fish 11 having an open abdominal cavity 13. The fish 11 is transported manually, automatically, or autonomously within a transport plane 23 with the tail 46 facing forward along a transport direction 24 by means of a transport device 21 having at least one transport element 22. Figure 1 and Figure 2bAn exemplary transport element 22 configured as a transport saddle is shown. During this transport along the transport direction 24, a scraper unit 25 at least partially penetrates the transport plane 23 or the fish 11 transported thereon. The scraper unit 25 includes a scraper 26 and a corresponding scraper abutting a support 27 by means of at least one spring element 28 which applies a spring load. During the transport of the fish 11 within the transport plane 23 by means of the transport device 21, the fish fillets 12 are at least partially separated from the ribs 20 surrounding the abdominal cavity 13 by means of the scraper unit in a scraping manner under the yielding counter-pressure of the spine 14. For this purpose, the scraper 26 is inserted with its tip starting from the tail region 46 of the fish 11 so as to separate the fish fillets 12 as close as possible from the skeleton 15 by scraping. The spring force of the scraper abutting the support 27 by the at least one spring element 28 is preferably variable during the separation process of the fish fillets 12, especially automatically or in an automated manner, so as to set a variable spring load during the separation of the fish fillets 12.

[0072] According to the invention, this method is characterized in that the scraper 26 is at least partially pivoted clockwise or counterclockwise 32, 33 about at least one pivot axis 30, 31 by means of an adjusting device 29. The scraper is capable of pivoting about at least one pivot axis 30, 31 before, during, and / or after transporting the fish 11 by means of the transport device 21, thereby adapting / setting the separated area. The adjustability of clockwise or counterclockwise 32, 33 is particularly important. Figure 1 , Figure 3a , 3b and Figure 5 The pivot axes 30, 31 are readily apparent through corresponding schematic indications. Preferably, at least one pivot axis 30, 31 is thus constructed and adapted to be substantially parallel to the transport plane 23.

[0073] The fitting / setting separation process of the fish fillet 12 is preferably achieved by means of at least one adjusting element 35, including an adjusting device 29, particularly a drive element, by means of at least one pivot axis 30, 31, rotating clockwise or counterclockwise 32, 33 at least partially. More preferably, by means of the adjusting device 29, a defined angle 36 and / or a defined angle curve of the scraper 26 relative to the transport plane 23 is set, particularly for separating the fish fillet 12 at a predetermined cutting angle 36 and / or at a predetermined cutting angle curve. Preferably, the angular position of the scraper 26 is measured and / or sensed by means of at least one—not shown in detail in the figure—measuring element.

[0074] In a preferred embodiment, the fish anatomy 39, particularly the height, length, width, and / or location of the abdominal cavity 13 of the fish 11, is sensed by a sensing unit 37 located upstream of the scraper unit 25. Based on the fish anatomy 39 sensed by the sensing unit 37, the partial pivotability of the scraper 26 about the at least one pivot axis 30, 31 is thus set. In another preferred embodiment, the pivotability of the scraper 26 according to the fish anatomy 39 is set automatically or in an automated manner, wherein during the separation of the fish fillet 12 along the transport direction 24, at least the scraper 26 pivots clockwise and / or counterclockwise 32, 33 about at least one pivot axis 30, 31.

[0075] Preferably, the area of ​​the abdominal cavity 13 of the fish 11 is trimmed by means of at least one trimming element 41, particularly a driven or drivable blade element 42. To achieve individual-specific trimming as much as possible, the at least one trimming element 41 is at least partially pivoted clockwise or counterclockwise 32, 33 about at least one pivot axis 44 by means of at least one trimming element adjustment device 43. In a preferred embodiment, the pivoting of the trimming element 41 about two or more pivot axes can be configured. More preferably, the at least one trimming element 41 and the scraper unit 25 are constructed and adapted to each other, wherein the fish 11 is trimmed according to the fillets 12 to be separated by means of the scraper unit 25 and the trimming element 41.

[0076] Particularly preferably, the method is performed using a cutting tool as described in one or more of claims 1 to 14 and / or a device as described in claim 15.

Claims

1. A knife apparatus (10) for at least partially separating fillets (12) from a headless, slaughtered fish (11) having an open abdominal cavity (13), comprising A transport device (21) having at least one transport element (22) is used to transport the fish (11) in the transport plane (23) with its tail (46) facing forward along the transport direction (24). At least one scraper unit (25) is arranged along the transport direction (24) and configured to at least partially penetrate the transport plane (23), wherein the scraper unit (25) includes a scraper (26) and a corresponding scraper abutment support (27) for applying a spring load by means of at least one spring element (28), wherein the scraper unit (25) is configured and adapted to at least partially peel and separate the fish fillet (12) from the ribs (20) surrounding the abdominal cavity (13) under the yielding counter-pressure of the spine (14). Its features The blade assembly (10) includes an adjustment device (29) connected to the scraper unit (25), wherein the adjustment device (29) is configured and adapted to pivot the scraper (26) at least partially clockwise or counterclockwise (32, 33) about at least one pivot axis (30, 31).

2. The knife-wielding device (10) according to claim 1, characterized in that, The adjustment device (29) includes at least one adjustment element (35), in particular a drive element, wherein the at least one adjustment element (35) is configured and adapted to configure and adapt at least partially pivotable of the scraper (26) about the at least one pivot axis (30, 31) clockwise or counterclockwise (32, 33).

3. The knife-wielding device (10) according to claim 1 or 2, characterized in that, The adjustment device (29) is adapted to set a defined angle (36) and / or a defined angle curve (36) of the scraper (26) relative to the transport plane (23), in particular to construct the separation of the fish fillet (12) at a predetermined cutting angle (36) and / or a cutting angle curve (36).

4. The knife-wielding device (10) according to one or more of claims 1 to 3, characterized in that, The at least one pivot axis (30, 31) is constructed and adapted to be substantially parallel to the transport plane (23).

5. The knife-wielding device (10) according to one or more of claims 2 to 4, characterized in that, The at least one regulating element (35) is constructed and adapted to be at least one pneumatic, hydraulic, electrical and / or electromagnetic actuation element, particularly a servo motor for controlling the partial pivotability of the at least one pivot axis (30, 31).

6. The knife apparatus (10) according to one or more of claims 1 to 5 further includes at least one sensing unit (37) located upstream of the scraper unit (25), which is configured and adapted to sense fish anatomy (39), in particular the height, length, width and / or abdominal cavity position (13) of the fish (11).

7. The knife-wielding device (10) according to claim 6, characterized in that, The adjustment device (29) is adapted to set the partial pivotability of the scraper (26) around the at least one pivot axis (30, 31) based on the fish anatomy (39) sensed by the sensing unit (37).

8. The knife-wielding device (10) according to claim 7, characterized in that, The adjustment of the pivotability of the fish anatomy (39) is performed automatically or in an automated manner, wherein during the separation of the fish fillets (12) along the transport direction (24), at least one variability of the scraper (26) is constructed and adapted to rotate clockwise and / or counterclockwise (32, 33) around the at least one pivot axis (30, 31).

9. The knife-wielding device (10) according to one or more of claims 3 to 8, characterized in that, The adjustment device (29) includes at least one measuring element for measuring and / or sensing the angular position of the scraper (26).

10. The knife-wielding device (10) according to one or more of claims 3 to 9, characterized in that, The at least one adjusting element (35) is configured and adapted to adjust the scraper unit (25), in particular the scraper (26), to a cleaning position, wherein the angle (36) of the scraper (26) relative to the transport plane (23) is preferably between 10° and 150°, preferably between 30° and 120°, and particularly preferably between 45° and 90°.

11. The knife-wielding device (10) according to one or more of claims 1 to 10, characterized in that, The spring force of the scraper against the support (27) of at least one spring element (28) is configured and adapted to be adjustable in a variable manner, especially automatically or automatically, so as to set a variable spring load during the separation of the fish fillet (12).

12. The knife device (10) according to one or more of claims 1 to 11 further includes at least one trimming element (41), in particular a driven or drivable knife element (42) configured and adapted for trimming a region within the abdominal cavity (13) of the fish (11).

13. The cutting tool (10) according to claim 12 further includes at least one trimming element adjustment device (43) connected to the at least one trimming element (41), wherein the trimming element adjustment device (43) is configured and adapted to pivot the trimming element (41) at least partially clockwise or counterclockwise (32, 33) about at least one pivot axis (44).

14. The knife-wielding device (10) according to claim 12 or 13, characterized in that, The at least one trimming element (41) and the scraper unit (25) are constructed and adapted to correspond to each other, wherein the trimming is set according to the fish fillet (12) to be separated.

15. An apparatus (40) for at least partially separating fillets from a headless, slaughtered fish (11) having an open abdominal cavity (13), comprising A transport device (21) having at least one transport element (22) is used to transport the fish (11) in the transport plane (23) with its tail (46) facing forward along the transport direction (24). At least one back knife (45) is used to expose the back bone (16) up to the spine (14). At least one abdominal knife is used to expose the abdominal bone (17) in the tail region (46) up to the spine (14). At least one separating knife, constructed and adapted for separating the fish fillet (12) from the spine (14), wherein the connecting meat left around the spine (14) by the at least one abdominal knife and the at least one back knife (45) is cut off. Its features The device (40) includes at least one knife apparatus (10) having at least one scraper unit (25) configured and adapted to, under the yielding counter-pressure of the spine (14), at least partially peel off the fillet (12) from the rib (20) surrounding the abdominal cavity (13).

16. A method for at least partially separating fillets (12) from a headless, slaughtered fish (11) having an open abdominal cavity (13), comprising the steps of: - The fish (11) is transported in the transport plane (23) with its tail (46) facing forward along the transport direction (24) by means of a transport device (21) having at least one transport element (22). - The scraper unit (25) is at least partially inserted into the transport plane (23), the scraper unit (25) including a scraper (26) and a corresponding scraper abutment support (27) by means of at least one spring element (28) to apply a spring load. - Using the scraper unit (25), under the yielding counter-pressure of the spine (14), the fish fillet (12) is at least partially peeled and separated from the ribs (20) surrounding the abdominal cavity (13). Its features The scraper (26) is at least partially pivoted clockwise or counterclockwise (32, 33) about at least one pivot axis (30, 31) by means of the adjustment device (29).

17. The method according to claim 16, characterized in that, By means of at least one adjusting element (35) including the adjusting device (29), especially a driving element, the scraper (26) is at least partially pivoted clockwise or counterclockwise (32, 33) about the at least one pivot axis (30, 31).

18. The method according to claim 16 or 17, characterized in that, The adjustment device (29) is used to set a defined angle (36) and / or a defined angle curve (36) of the scraper (26) relative to the transport plane (23), in particular to separate the fish fillets (12) at a predetermined cutting angle (36) and / or a cutting angle curve (36).

19. The method according to one or more of claims 16 to 18, characterized in that, The at least one pivot axis (30, 31) is constructed and adapted to be substantially parallel to the transport plane (23).

20. The method according to one or more of claims 16 to 19, characterized in that, The fish anatomy (39), particularly the height, length, width and / or abdominal cavity position (11) of the fish (11), is sensed by the sensing unit (37) located upstream of the scraper unit (26).

21. The method according to claim 20, characterized in that, The partial pivotability of the scraper (26) around the at least one pivot axis (30, 31) is determined based on the fish anatomy (39) sensed by the sensing unit (37).

22. The method according to claim 21, characterized in that, The pivotability of the scraper (26) based on the fish anatomy (39) is set automatically or in an automated manner, wherein during the separation of the fish fillets (12) along the transport direction (24), at least the scraper (26) pivots clockwise and / or counterclockwise (32, 33) about the at least one pivot axis (30, 31).

23. The method according to one or more of claims 18 to 22, characterized in that, The angular position (36) of the scraper (26) is measured and / or sensed by means of at least one measuring element.

24. The method according to one or more of claims 16 to 23, characterized in that, The spring force of at least one spring element (28) of the scraper abutting the support (27) is variable, especially set automatically or in an automated manner, so as to set a variable spring load during the separation of the fish fillet (12).

25. The method according to one or more of claims 16 to 24, characterized in that, The area within the abdominal cavity (13) of the fish (11) is trimmed by means of at least one trimming element (41), particularly a driven or drivable blade element (42).

26. The method according to claim 25, characterized in that, The at least one trimming element (41) is at least partially pivoted clockwise or counterclockwise (32, 33) about at least one pivot axis (44) by means of at least one trimming element adjustment device (43).

27. The method according to claim 25 or 26, characterized in that, The at least one trimming element (41) and the scraper unit (25) are constructed and adapted to correspond to each other, wherein the fish (11) is trimmed according to the fish fillet (12) to be separated.

28. The method according to one or more of claims 16 to 27, characterized in that, The method is performed using a knife tool (10) according to one or more of claims 1 to 14 and / or a device (40) according to claim 15.

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