Low-surface-energy poultry meat anti-sticking precision cutting tool and cutting method thereof

Abstract

The application provides a low-surface-energy poultry meat anti-sticking precision cutting tool and a cutting method thereof, which comprises L-shaped support frames arranged on both sides of a conveying path, first guide plates connected to the L-shaped support frames at the left front and rear ends through first connecting pieces, second guide plates connected to the L-shaped support frames at the right front and rear ends through second connecting pieces, the first guide plates and the second guide plates are both arranged in an inclined manner from outside to inside and cooperatively form V-shaped guide channels, and the lower ends of the two are both embedded with guide conveying belts for conveying poultry heads; the upper surfaces of the horizontal plates of the L-shaped support frames are fixed with support blocks through first bolts, support frames are arranged between the surrounding support blocks, the lower surfaces of the support frames are provided with limiting guide pieces for pressing and limiting the two ends of the poultry heads from above; the application can fundamentally solve the sticking problem in the cutting process through the organic combination of structural innovation, surface treatment technology and auxiliary cleaning system, and effectively prevent the poultry meat from sticking.

Description

Technical Field

[0001] This invention relates to the field of food processing machinery technology, specifically to a low surface energy precision cutting tool for preventing poultry meat from sticking and its cutting method. Background Technology

[0002] In automated poultry slaughtering and processing lines (such as chickens, ducks, and geese), the precise cutting and separation of poultry heads is a high-frequency and critical process. Currently, the cutting equipment commonly used in industry mainly includes traditional tools such as circular saws, reciprocating straight blades, and band saws. However, due to the complex structure of poultry heads, which are rich in blood, cartilage, fat, and connective tissue, blade adhesion is highly likely to occur during cutting. Specifically, meat scraps, blood clots, and other residues produced during cutting adhere firmly to the blade surface, leading to continuously increased cutting resistance, a rough and uneven cut surface, and severely affecting the product's appearance quality. Simultaneously, these adhesions provide a breeding ground for bacteria, significantly increasing food safety risks and potentially causing microbial contamination. Furthermore, to cope with frequent blade adhesion, the production line must be interrupted multiple times for manual cleaning, which not only significantly reduces production efficiency but also increases additional labor maintenance costs. More notably, the poultry head lacks effective fixation during the cutting process, making it prone to positional shifts or accidental flipping. This causes the cutting trajectory to deviate from the predetermined path, further resulting in skewed cutting, reduced product qualification rate, and a chain of difficulties for subsequent processing steps. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a low surface energy poultry meat anti-sticking precision cutting tool that can fundamentally solve the sticking problem during the cutting process by organically combining structural innovation, surface treatment technology and auxiliary cleaning system, effectively prevent poultry meat from sticking and achieve high-precision and stable cutting.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A low surface energy precision cutting tool for preventing poultry meat from sticking includes L-shaped support frames disposed on both sides of the conveying path. The left L-shaped support frames at both ends are connected to a first guide plate via a first connector, and the right L-shaped support frames at both ends are connected to a second guide plate via a second connector. Both the first and second guide plates are inclined from the outside inwards and cooperate to form a V-shaped flow channel. A guide conveyor belt for conveying poultry heads is embedded at the lower end of both guide plates. This V-shaped structure automatically centers the poultry heads, preventing deviation and eliminating the need for manual adjustment; the guide conveyor belt provides active conveying, ensuring continuous feeding.

[0005] Furthermore, a support block is fixed to the upper surface of the horizontal plate of the L-shaped support frame via a first bolt, and a support frame is erected between the support blocks around the perimeter. The lower surface of the support frame is provided with limiting guides for pressing and limiting the two ends of the poultry head from above. The limiting guides and the lower guide conveyor belt form an upper and lower clamping action, effectively preventing the poultry head from jumping or tilting during cutting and improving the consistency of the cutting position.

[0006] Furthermore, a U-shaped support frame is provided on the middle of the upper surface of each of the left and right support plates of the support frame. Connecting support rods are provided on the inner sides of the two vertical plates of the U-shaped support frames at both ends. A limiting frame is embedded in the middle of the connecting support rod. A telescopic cylinder is embedded in the horizontal plate of the U-shaped support frame. A lifting plate is provided at the end of the telescopic rod of the telescopic cylinder. A lifting rod, installed with a fixing nut, is embedded in the middle of the lifting plate. A U-shaped blade holder is connected to the end of the lifting rod via a buffer and shock absorber. A conical cutting blade coated with a low surface energy material is installed on the U-shaped blade holder via an mounting component. The telescopic cylinder drives the conical cutting blade to rise and fall vertically, with rapid and precise action; the buffer and shock absorber absorbs impact and prevents blade chipping; the conical blade reduces the contact area, and the low surface energy coating makes it difficult for meat tissue to adhere. Together, these two elements achieve continuous, non-stick cutting.

[0007] Furthermore, the upper surface of the guide conveyor belt is provided with multiple guide anti-slip strips at equal intervals. The first and second connecting members have the same structure, both including an extension plate extending downward from the end of the L-shaped support frame horizontal plate. This extension plate is connected and fixed to the corresponding guide plate by a second bolt, thereby allowing adjustment of the tilt angle of the guide plate. The anti-slip strips increase friction and prevent poultry heads from slipping; the adjustable tilt angle adapts to different breeds of poultry head sizes, making it highly versatile.

[0008] Furthermore, the limiting guide includes a limiting conveyor belt. First screws are rotatably mounted at both ends between the left and right horizontal plates of the support frame. Synchronous motors for driving the first screws are mounted at both ends within the support frame. Moving blocks are spirally fitted onto both ends of the first screws. U-shaped support plates are mounted on the lower surfaces of the moving blocks at both ends. The limiting conveyor belt is mounted within the U-shaped support plates, and multiple rubber limiting strips are evenly spaced on the belt body. The spacing between the left and right limiting conveyor belts can be adjusted by controlling the rotation direction of the first screws with the synchronous motors to accommodate poultry heads of different sizes. This design allows for stepless adjustment of the limiting width, and the rubber limiting strips provide a firm grip without damaging the poultry skin.

[0009] Furthermore, a fixing rod is fixed to the front end of the support frame. A limiting rod for preventing the poultry head from flipping during cutting is fixed to the fixing rod via a third bolt, and the height of the limiting rod can be adjusted along the axial direction of the fixing rod. The limiting rod abuts against the bridge of the poultry head or the top before the blade falls, providing cutting guidance and preventing flipping, thus significantly reducing the cutting deviation rate.

[0010] Furthermore, the buffer and shock absorber includes a limiting groove at the lower end of the lifting rod, a buffer spring sleeved on the buffer rod, and a first buffer fixing ring disposed on the outer side of the lower end of the lifting rod. The upper end of the buffer rod is embedded in the limiting groove, and a connecting block is connected to the lower end of the buffer rod. This connecting block is connected to the middle of the upper surface of the U-shaped blade holder. A second buffer fixing ring is sleeved on the upper end of the connecting block. Connecting rods passing through the first buffer fixing ring are connected to both the front and rear ends of the upper surface of the second buffer fixing ring. An anti-detachment block is provided at the upper end of the connecting rod, thereby providing elastic buffering and return guidance when the conical cutting blade contacts the poultry head. This structure causes the spring to compress when the blade contacts hard joints, protecting the blade; after cutting, the spring returns to its original position, ensuring accurate blade return.

[0011] Furthermore, the mounting component includes multiple mounting threaded holes and a limiting groove on the upper end of the tapered cutting blade. An anti-detachment groove is provided within the limiting groove. Multiple mounting screws corresponding to the mounting threaded holes are evenly spaced on the U-shaped blade holder. U-shaped support blocks are provided at both the front and rear ends of the horizontal plate of the U-shaped blade holder. Guide rail grooves are provided on the inner sides of the two vertical plates of the U-shaped support blocks. U-shaped anti-detachment blocks corresponding to the anti-detachment grooves are slidably embedded in the guide rail grooves. Sliding protrusions corresponding to the guide rail grooves are provided on the outer sides of the two vertical plates of the U-shaped anti-detachment blocks. A trapezoidal slider is provided on the inner side of the horizontal plate of the U-shaped anti-detachment block. The trapezoidal slider is connected to the U-shaped support block via a return spring. A second screw is spirally embedded at both the front and rear ends of the horizontal plate of the U-shaped blade holder. A trapezoidal lifting block that cooperates with the trapezoidal slider is provided at the lower end of the second screw. The second screw is spirally fixed by a fixing nut. By rotating the second screw, the trapezoidal slider is pushed, thereby driving the U-shaped anti-detachment block to embed into the anti-detachment groove, achieving rapid locking and anti-detachment of the blade. This quick-change structure allows for blade replacement in 30 seconds without tools, and its double locking mechanism (screw + anti-loosening block) ensures that the blade will not come loose during high-speed cutting, providing high safety.

[0012] Furthermore, the first and second guide plates are internally embedded with U-shaped cooling pipes for rapid coagulation of poultry blood as it flows through. These cooling pipes are circulatedly connected to an external cold source. The inner side of the limiting frame is embedded with a U-shaped air outlet pipe connected to a high-pressure air inlet pipe. Multiple high-pressure jet nozzles with downward-sloping air outlets are equidistantly arranged on the pipe body. After the conical cutting blade retracts, the high-pressure jet nozzles spray high-pressure air onto the blade surface to remove any potentially adhering residue. The cooling pipes lower the temperature of the guide plates, causing the blood to solidify upon contact with the cold air, reducing liquid blood adhesion. The high-pressure jet nozzles actively clean the blade, blowing off any trace residue, achieving a dual anti-sticking effect.

[0013] Furthermore, the tapered cutting blade has a tapered cross-sectional angle of 15° to 30°, and its surface is coated with a low surface energy material, such as fluorocarbon resin or polytetrafluoroethylene, with a coating thickness of 20-50 micrometers and a surface energy of 18-25 dyn / cm. This tapered angle range achieves an optimal balance between sharpness and strength; the low surface energy coating reduces the adhesion between meat tissue and the blade by more than 80%.

[0014] The present invention also provides a precision cutting method for preventing poultry meat from sticking based on the above-mentioned blade, comprising the following steps performed in sequence: Step S1: Start the guide conveyor belt and the limiting conveyor belt, place the poultry head to be cut in the V-shaped entrance formed by the first guide plate and the second guide plate, so that the poultry head is conveyed forward with the head facing forward and the posture stable under the combined action of the guide anti-slip strip and the rubber limiting strip. Step S2: When the poultry head is delivered directly below the conical cutting blade, the position sensor sends a signal, and the telescopic cylinder is activated to drive the lifting plate, lifting rod and conical cutting blade to descend rapidly; Step S3: The tapered cutting blade first contacts the limiting rod and slides along the guide surface of the limiting rod into the predetermined cutting line of the poultry head, while the buffer spring is compressed to absorb the initial impact. Step S4: The tapered cutting blade continues to descend, its tapered edge cutting through the middle of the poultry head, and the low surface energy coating causes the poultry meat tissue to separate instantly from the blade surface; Step S5: After the tapered cutting blade reaches the bottom dead center, the telescopic cylinder reverses its movement to drive the blade to rise and retract, while the high-pressure jet head performs pulse-style blowing on the blade surface. Step S6: The blade returns to its initial position, completing the cutting of a single poultry head. The next poultry head is then cut by repeating steps S1 to S6 under the action of the conveyor belt.

[0015] This method enables fully automatic, non-stick, and high-precision poultry head cutting, with a single cycle time as short as 1.2 seconds.

[0016] Furthermore, the method also includes the following optional adjustment steps: adjusting the spacing between the limiting conveyor belts by driving the first screw to rotate via a synchronous motor; adjusting the height of the limiting rod by loosening the third bolt and moving the limiting rod axially along the fixed rod and then locking it, thereby adapting to different breeds or sizes of poultry heads; and in step S5, the high-pressure jet head uses an alternating pulse mode for purging, with a purging pressure of 0.5-0.8 MPa and a pulse width of 0.1-0.3 seconds. Alternating pulses avoid airflow dead zones, resulting in more thorough cleaning.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention effectively solves the adhesion problem during poultry head cutting by using three-dimensional spatial stability limiting, low surface energy coating to reduce adhesion, and buffering and shock absorption. It has the advantages of improving cutting accuracy, reducing poultry meat adhesion, enhancing stability, and improving production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure in the first state of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure in the second state of the present invention.

[0020] Figure 3 This is a structural schematic diagram of the third state of the present invention.

[0021] Figure 4 This is the front view of the present invention.

[0022] Figure 5 This is a top view of the present invention.

[0023] Figure 6 This is a structural schematic diagram of the first guide plate and the second guide plate.

[0024] Figure 7 This is a structural schematic diagram of the first state of the support frame.

[0025] Figure 8 This is a structural schematic diagram of the second state of the support frame.

[0026] Figure 9 This is a schematic diagram of the structure of the buffer and shock absorber.

[0027] Figure 10 This is a structural schematic diagram of the mounting component.

[0028] In the diagram: L-shaped support frame-1, first connector-2, first guide plate-11, second connector-12, second guide plate-13, guide conveyor belt-14; first bolt-15, support block-16, support frame-3, limiting guide component-4, U-shaped support frame-5, connecting support rod-51, limiting frame-52, telescopic cylinder-53, lifting plate-54, lifting rod-55, buffer shock absorber-6, U-shaped blade holder-56, mounting component-7, conical cutting blade-57, guide anti-slip strip-17, extension plate-21, second bolt-22, limiting conveyor belt-41, first screw-42, moving block-43, U-shaped support. Plate-44, Rubber limiting strip-45, Fixing rod-31, Third bolt-32, Limiting rod-33, Limiting groove-61, Buffer rod-62, Buffer spring-63, First buffer fixing ring-64, Connecting block-65, Second buffer fixing ring-66, Connecting rod-67, Anti-detachment block-68, Mounting threaded hole-71, Limiting slot-72, Anti-detachment groove-73, Mounting screw-74, U-shaped support block-75, U-shaped anti-detachment block-76, Sliding protrusion-77, Trapezoidal slider-78, Return spring-79, Second screw-8, Trapezoidal lifting block-81, Fixing nut-82, High-pressure air inlet pipe-9, High-pressure jet head-91. Detailed Implementation

[0029] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Please see Figures 1 to 10As shown, this application proposes a low surface energy poultry meat anti-sticking precision cutting tool, including L-shaped support frames 1 disposed on both sides of the conveying path. The L-shaped support frames 1 at the front and rear ends of the left side are connected to a first guide plate 11 via a first connector 2, and the L-shaped support frames 1 at the front and rear ends of the right side are connected to a second guide plate 13 via a second connector 12. The first guide plate 11 and the second guide plate 13 are both inclined from the outside to the inside and cooperate to form a V-shaped guide channel, and the lower ends of both are embedded with a guide conveyor belt 14 for conveying poultry heads; the upper surface of the horizontal plate of the L-shaped support frame 1 is fixed with a support block 16 via a first bolt 15, and a support frame 3 is erected between the support blocks 16 around the perimeter. The lower surface of the support frame 3 is provided with a limiting guide 4 for pressing and limiting the two ends of the poultry head from above; the upper surface of the left and right support plates of the support frame 3 is provided with a U-shaped support frame 5 in the middle, the inner side of the two vertical plates of the U-shaped support frame 5 at both ends is provided with a connecting support rod 51, the middle of the connecting support rod 51 is embedded with a limiting frame 52, the horizontal plate of the U-shaped support frame 5 is embedded with a telescopic cylinder 53, the end of the telescopic rod of the telescopic cylinder is provided with a lifting plate 54, the upper middle of the lifting plate 54 is embedded with a lifting rod 55 installed by a fixing nut, the end of the lifting rod 55 is connected to a U-shaped cutter holder 56 through a buffer and shock absorber 6, and the U-shaped cutter holder 56 is equipped with a conical cutting blade 57 coated with a low surface energy material through a mounting piece 7; The cutting method of this tool includes the following steps: S1. The poultry head is conveyed forward by the guide conveyor belt through the V-shaped guide channel, while the limiting guide component presses down on both ends of the poultry head from above to achieve stable limiting in three-dimensional space. S2. The telescopic cylinder drives the lifting plate and lifting rod to descend, causing the U-shaped knife holder and conical cutting blade to cut vertically into the poultry head; S3. During the cutting process, the buffer and shock absorber absorbs the impact load, while the tapered cross section of the tapered cutting blade and the low surface energy coating reduce the contact area and adhesion with the poultry meat. S4. After the cutting is completed, the telescopic cylinder drives the conical cutting blade to retract, completing one cutting cycle.

[0032] For ease of understanding, the following explains some key terms in this embodiment: L-shaped support frames are used to provide structural support for the entire cutting tool. They are usually made of metal and fixed to both sides of the conveying path to support subsequent components such as guide plates and support frames.

[0033] The first and second guide plates are inclined from the outside to the inside, forming a V-shaped flow channel. Their function is to initially center and adjust the posture of the incoming bird head, guiding it into the subsequent precise cutting area.

[0034] The guide conveyor belt is embedded at the lower end of the V-shaped guide channel. Its belt body is usually made of wear-resistant and non-slip material. It drives the poultry head forward along the preset path through the drive device.

[0035] The support frame is mounted on an L-shaped support frame, providing an installation platform for limiting guides, U-shaped support frames, etc., ensuring that these components maintain a stable position during the cutting process.

[0036] The limiting guide is set on the lower surface of the support frame. Its function is to press and limit the two ends of the poultry head from above. In conjunction with the V-shaped guide channel and the guide conveyor belt, it can achieve stable fixation of the poultry head in three-dimensional space and prevent displacement or flipping during the cutting process.

[0037] A telescopic cylinder is an actuator that uses compressed air to drive a telescopic rod to perform linear reciprocating motion. In this embodiment, it is used to drive the lifting plate, the lifting rod, and the conical cutting blade to move vertically up and down, thereby achieving the cutting action.

[0038] The buffer and shock absorber is connected between the end of the lifting rod and the U-shaped blade holder. Its function is to absorb the impact load when the conical cutting blade contacts the bird's head, reduce the instantaneous impact on the blade and bird's head, protect the blade and improve cutting stability.

[0039] The tapered cutting blade is the part that cuts directly into the poultry head. Its tapered cross-section design is intended to reduce cutting resistance, while the low surface energy material coated on the surface further reduces the adhesion between the blade and the poultry meat, preventing residues such as meat scraps and blood clots from adhering.

[0040] The cutting tool in this embodiment includes L-shaped support frames disposed on both sides of the conveying path. These L-shaped support frames can be made of materials such as steel or aluminum alloy and are fixed to the equipment base by welding or bolting, providing stable structural support for the entire cutting system.

[0041] The L-shaped support frames at both ends of the left side are connected to a first guide plate via a first connector, and the L-shaped support frames at both ends of the right side are connected to a second guide plate via a second connector. The first and second connectors can be simple fixing brackets or angle brackets, with the guide plates fixed to the L-shaped support frames by bolts. Both the first and second guide plates are inclined from the outside in and cooperate to form a V-shaped flow channel, which guides the poultry head into the predetermined cutting position.

[0042] The lower end of each V-shaped flow channel is fitted with a guide conveyor belt for transporting poultry heads. This guide conveyor belt can be a continuous annular belt, driven by a motor to rotate, thereby moving the poultry heads forward along the channel.

[0043] The upper surface of the horizontal plate of the L-shaped support frame is fixed with support blocks by the first bolt, and a support frame is erected between the support blocks around the perimeter. The support blocks can be simple square or round pads. The support frame is fixed to the L-shaped support frame with bolts to ensure the stability of the support frame.

[0044] The lower surface of the support frame is provided with limiting guides for pressing and limiting the two ends of the poultry head from above. The limiting guides may consist of a pair of fixed or adjustable pressure plates, which apply downward pressure to the poultry head by gravity or a simple spring mechanism to prevent the poultry head from jumping or flipping during the cutting process.

[0045] The left and right support plates of the support frame each have a U-shaped support frame at the center of their upper surface. This U-shaped support frame can be formed by bending metal sheets and is bolted to the support frame, providing a mounting base for the subsequent lifting mechanism.

[0046] The inner sides of the two vertical plates of the U-shaped support frame at both ends are equipped with connecting support rods, and a limiting frame is embedded in the middle of the connecting support rod. The connecting support rod can be cylindrical or square and is fixed to the U-shaped support frame by welding or bolts. The limiting frame is fixed to the connecting support rod by buckles or bolts to further stabilize the cutting area.

[0047] A telescopic cylinder is embedded in the horizontal plate of the U-shaped support frame. The telescopic cylinder is controlled by an air source to extend and retract, and a lifting plate is provided at the end of its telescopic rod. The lifting plate can be a flat plate, which is bolted to the telescopic rod and serves as a platform to support the lifting rod and the cutting tool.

[0048] A lifting rod, secured with a fixing nut, is embedded in the center of the lifting plate. This lifting rod can be solid or hollow, fixed to the lifting plate by the nut, and extends downwards. A U-shaped blade holder is connected to the end of the lifting rod via a shock-absorbing component. This shock-absorbing component can be a simple spring or rubber pad, used to provide some elastic cushioning when the blade contacts the poultry head.

[0049] A U-shaped tool holder is fitted with a tapered cutting blade coated with a low surface energy material via a mounting bracket. This U-shaped tool holder, which can be machined from metal, is used to clamp or secure the tapered cutting blade. The mounting bracket can secure the blade to the tool holder using bolts, rivets, or simple clamps. The tapered cutting blade has a tapered cross-section and its surface is coated with a low surface energy material, such as a polymer coating, to reduce cutting resistance and minimize adhesion.

[0050] The cutting method of this tool includes the following steps: S1. The poultry head is conveyed forward via a V-shaped guide conveyor belt, while a limiting guide holds both ends of the poultry head from above, achieving stable positioning in three-dimensional space. In this step, the poultry head is guided by the guide plate and conveyor belt, and simultaneously fixed by the limiting guide to ensure its accurate position before cutting.

[0051] S2. The telescopic cylinder drives the lifting plate and lifting rod to descend, causing the U-shaped blade holder and conical cutting blade to vertically cut into the poultry head. After receiving the start signal, the telescopic cylinder quickly pushes the blade downward, so that the blade enters the poultry head vertically.

[0052] S3. During the cutting process, the shock absorber absorbs the impact load, while the tapered cross-section of the tapered cutting blade and the low surface energy coating reduce the contact area and adhesion with the poultry meat. When the blade contacts the poultry head, the shock absorber provides flexible support, and the tapered blade and low surface energy coating work together to make the cutting process smooth.

[0053] S4. After the cutting is completed, the telescopic cylinder drives the conical cutting blade to retract, completing one cutting cycle. After the blade finishes cutting, the telescopic cylinder reverses its movement, raising the blade to the initial position to prepare for the next poultry head cutting.

[0054] This application's low surface energy poultry meat anti-sticking precision cutting tool achieves stable transport and precise positioning of the poultry head in three-dimensional space through the synergistic effect of a V-shaped guide channel, a guide conveyor belt, and limiting guide components, effectively preventing displacement and flipping during the cutting process. The tapered cutting blade, combined with a low surface energy coating, significantly reduces the contact area and adhesion between the blade and the poultry meat, thereby reducing the adhesion of meat scraps, blood clots, and other residues, lowering cutting resistance, improving the smoothness of the cut surface, and helping to inhibit bacterial growth. The inclusion of a buffer and shock-absorbing component further ensures the stability of the cutting process, comprehensively improving the precision and efficiency of poultry meat cutting, and reducing the frequency of cleaning and maintenance and production costs.

[0055] Please continue reading. Figures 1 to 6 As shown, this application further proposes a low surface energy poultry meat anti-sticking precision cutting tool, wherein multiple guide anti-slip strips 17 are equally spaced on the upper surface of the guide conveyor belt 14, the first connector 2 and the second connector 12 have the same structure, both including an extension plate 21 extending downward from the end of the horizontal plate of the L-shaped support frame 1, the extension plate 21 is connected and fixed to the corresponding guide plate by the second bolt 22, thereby allowing the tilt angle of the guide plate to be adjusted.

[0056] Specifically, the upper surface of the guide conveyor belt is evenly spaced with multiple guide anti-slip strips. These guide anti-slip strips are typically made of elastic materials with a high coefficient of friction (such as food-grade rubber or polyurethane) and are evenly distributed on the conveyor belt surface in a raised strip or dotted structure. Their function is to increase the friction between the poultry head and the conveyor belt, effectively preventing the poultry head from slipping or rolling during transport. At the same time, these anti-slip strips also provide a certain lateral guidance for the poultry head, helping it maintain a preset posture and direction, ensuring its stable entry into the cutting area.

[0057] Furthermore, the first and second connectors have identical structures. This consistent design simplifies the manufacturing and assembly process of the components and reduces production costs. Each connector includes an extension plate extending downwards from the end of the L-shaped support frame cross plate. This extension plate serves as a transition structure between the L-shaped support frame and the guide plate, providing a stable base for the installation of the guide plate. The extension plate is connected and fixed to the corresponding guide plate by a second bolt. Specifically, the extension plate may have pre-drilled elongated holes or arc-shaped grooves, while the guide plate has corresponding bolt holes. By loosening or tightening the second bolts and utilizing the adjustment space provided by the elongated holes or arc-shaped grooves, a slight rotation or translation of the guide plate relative to the extension plate can be achieved, thereby allowing adjustment of the guide plate's tilt angle. This adjustability allows the opening width and tilt angle of the V-shaped guide channel to be precisely adjusted according to the actual needs of poultry heads of different sizes, ensuring optimal guidance and restraint within the channel.

[0058] Through the above technical solution, the multiple guide anti-slip strips installed on the guide conveyor belt can significantly increase the friction between the poultry head and the conveyor belt, effectively preventing the poultry head from slipping or shifting its posture during high-speed transport, thus ensuring that the poultry head enters the cutting area with a stable posture and precise position. Simultaneously, the first and second connecting parts adopt the same structure, and the tilt angle of the guide plate is adjustable through the extension plate and the second bolt. This design allows the V-shaped guide channel to flexibly adapt to poultry heads of different breeds or sizes. By adjusting the tilt angle of the guide plate, the most suitable guiding and limiting space can be provided for poultry heads of different sizes, ensuring that the poultry head is positioned more stably and accurately in three-dimensional space. This not only improves the reliability and stability of poultry head transport but also provides a solid foundation for the subsequent precision cutting of the poultry head by the conical cutting blade, thereby significantly improving the overall cutting accuracy and efficiency and reducing cutting deviations and losses caused by inaccurate positioning.

[0059] Please continue reading. Figures 1 to 5 , Figure 7 and Figure 8As shown, this application further proposes an improved limiting guide component 4, which includes a limiting conveyor belt 41. A first screw 42 is rotatably mounted at both ends of the left and right horizontal plates of the support frame 3. A synchronous motor (not shown) is mounted at both ends of the support frame 3 to drive the first screw 42 to rotate. Moving blocks 43 are spirally sleeved on both ends of the first screw 42. A U-shaped support plate 44 is mounted on the lower surface of the moving blocks 43 at both ends. The limiting conveyor belt 41 is mounted inside the U-shaped support plate 44, and multiple rubber limiting strips 45 are evenly spaced on the belt body of the limiting conveyor belt 41. The distance between the left and right limiting conveyor belts 41 can be adjusted by controlling the rotation direction of the first screw 42 with the synchronous motor to accommodate poultry heads of different sizes. The surface thread of the first screw 42 is a bidirectional thread, ensuring the synchronous movement of the moving blocks 43 on both sides. Synchronous motors for driving the first screw 42 to rotate are installed at both the front and rear ends of the support frame 3. By controlling the rotation direction of the synchronous motors, the spacing between the left and right limiting conveyor belts 41 can be precisely adjusted to accommodate poultry heads of different sizes. These rubber limiting strips 45 can increase the friction with the surface of the poultry head, providing a more stable limiting effect, while their elasticity can also reduce mechanical damage to the poultry head.

[0060] The limiting conveyor belt, as the core component of the limiting guide system, achieves dynamic pressure and transport of poultry heads from above through its continuous movement and surface characteristics. Its belt body is typically made of materials with a certain coefficient of friction and flexibility, such as rubber or polyurethane, to ensure sufficient friction to prevent slippage while avoiding damage to the poultry heads. The first screw is the key transmission component for adjusting the spacing of the limiting conveyor belt. Its surface thread is a bidirectional thread, meaning that the threads on the left and right sides of the same screw are in opposite directions. When the first screw rotates, the moving blocks at both ends, fitted onto it, move in opposite directions at the same speed, thus achieving synchronous and symmetrical adjustment of the limiting conveyor belt spacing. A synchronous motor is used to precisely drive the rotation of the first screw. Selecting a synchronous motor ensures precise control of the first screw's speed and angle, thereby guaranteeing the accuracy and repeatability of the limiting conveyor belt spacing adjustment. The synchronous motor can be a stepper motor or a servo motor, receiving commands and outputting corresponding drive signals through a controller. The moving block is a component connecting the first screw and the U-shaped support plate, and its interior has a threaded hole that mates with the screw thread. When the first screw rotates, the moving block converts the screw's rotational motion into its own linear reciprocating motion, thereby driving the U-shaped support plate and the limiting conveyor belt below it to move laterally. The U-shaped support plate provides structural support and installation space for the limiting conveyor belt. The drive and driven rollers of the limiting conveyor belt are usually installed inside the U-shaped support plate and connected to the moving block through the U-shaped support plate, moving together with the moving block. Rubber limiting strips are raised structures set on the surface of the limiting conveyor belt. These limiting strips are usually made of elastic rubber material with a high coefficient of friction. Their function is to further enhance the gripping force of the limiting conveyor belt on the poultry head, preventing the poultry head from rolling or sliding during conveying and cutting, while their elasticity provides flexible contact with the poultry head, reducing indentations or damage.

[0061] Through the above technical solution, the limiting guide component is no longer a single, fixed structure, but possesses a high degree of adaptability and precise adjustment capability. The limiting conveyor belt, combined with rubber limiting strips, provides stable and flexible pressure and transport for the poultry head from above, effectively preventing the poultry head from flipping or shifting during cutting. Most importantly, the synchronous motor driving the bidirectional threaded first screw enables synchronous and precise adjustment of the spacing between the left and right limiting conveyor belts, easily accommodating poultry heads of different breeds or sizes. This adjustable limiting mechanism not only significantly improves the stability and accuracy of poultry head positioning, avoiding cutting deviations or damage to the poultry head due to size mismatch, but also simplifies the equipment's compatibility with poultry heads of different specifications, improving overall cutting efficiency and product quality.

[0062] Please continue reading. Figures 1 to 5 , Figure 7 and Figure 8As shown, this application further proposes an improved solution, in which a fixing rod 31 is fixed to the front end of the support frame 3, and a limiting rod 33 for preventing the poultry head from flipping during the cutting process is connected and fixed to the fixing rod 31 by a third bolt 32, and the height of the limiting rod 33 can be adjusted along the axial direction of the fixing rod. The limiting rod 33 abuts against the bridge of the poultry head or the top before the blade falls, providing cutting guidance and preventing flipping, thus significantly reducing the cutting deviation rate.

[0063] The above technical solution involves installing a fixed rod at the front end of the support frame, with a third bolt connecting it to a fixed limiting rod, providing an additional physical constraint applied from above for the poultry head during cutting. When the tapered cutting blade descends and begins cutting the poultry head, the limiting rod effectively holds the head, preventing it from flipping or shifting upwards due to cutting force or its own instability. Simultaneously, the height of the limiting rod is adjustable along the axis of the fixed rod, meaning the operator can precisely adjust the gap between the limiting rod and the poultry head according to its specific dimensions, ensuring the limiting effect is neither too tight (causing damage) nor too loose (loosening). This refined anti-flipping mechanism, combined with the V-shaped guide channel and limiting guide, further enhances the overall stability of the poultry head during cutting, significantly improving cutting accuracy and consistency, reducing cutting deviations or scrap rates caused by head flipping, thus ensuring smooth cutting operations and high-quality final products.

[0064] Please continue reading. Figure 9 As shown, this application further proposes a buffer damping component 6, including a limiting groove 61 opened at the lower end of the lifting rod 55, a buffer spring 63 sleeved on the buffer rod 62, and a first buffer fixing ring 64 disposed on the outer side of the lower end of the lifting rod 55. The upper end of the buffer rod 62 is embedded in the limiting groove 61, and the lower end of the buffer rod 62 is connected to a connecting block 65. The connecting block 65 is connected to the middle of the upper surface of the U-shaped cutter holder 56. The upper end of the connecting block 65 is sleeved with a second buffer fixing ring 66. The front and rear ends of the upper surface of the second buffer fixing ring 66 are connected to connecting rods 67 that pass through the first buffer fixing ring 64. The upper end of the connecting rod 67 is provided with an anti-detachment block 68, thereby providing elastic buffering and reset guidance when the conical cutting blade 57 contacts the poultry head.

[0065] Specifically, the limiting groove at the lower end of the lifting rod provides an embedding space and initial positioning for the upper end of the buffer rod, ensuring that the vertical movement trajectory of the buffer rod is restricted and preventing lateral swaying, thus guaranteeing the stability of the buffer mechanism. This limiting groove can be designed as circular, square, or other shapes suitable for the cross-section of the buffer rod. Its depth and width should match the dimensions of the buffer rod to achieve a tight fit without hindering vertical sliding. The upper end of the buffer rod is embedded in the limiting groove, and the lower end connects to the connecting block. It is a key component for transmitting impact force and guiding the compression of the buffer spring. It can be a solid or hollow metal rod with a precision-machined surface to ensure smooth sliding with the limiting groove. Its material is typically high-strength, wear-resistant, such as stainless steel or alloy steel. The buffer spring, fitted onto the buffer rod, is the core component for absorbing impact energy. It can be a helical compression spring, whose stiffness, preload, and maximum compression must be precisely calculated and selected based on the expected impact load and the required buffer stroke. The spring material is usually spring steel to ensure its elasticity and fatigue life. The first buffer retaining ring, located on the outer side of the lower end of the lifting rod, provides a hole for the connecting rod to pass through and guide, and serves as an external limiting structure for the connecting rod. It can be annular or polygonal in structure, fixed to the lifting rod by threads, pins, or other means to ensure its stable position. The connecting block connecting the lower end of the buffer rod to the middle of the upper surface of the U-shaped cutter holder acts as a force transmission bridge between the buffer mechanism and the cutter holder. It can be a solid or hollow block structure, connected to the buffer rod and U-shaped cutter holder by bolts, welding, or other reliable methods to ensure the connection's strength and rigidity. The second buffer retaining ring, fitted onto the upper end of the connecting block, cooperates with the connecting rod to achieve the reset guidance and anti-disengagement functions of the buffer mechanism. It can be annular or polygonal in structure, fixed to the connecting block by interference fit or fasteners. The connecting rods, connected at both ends to the upper surface of the second buffer retaining ring and passing through the first buffer retaining ring, provide guidance during buffering and assist in reset when the blade retracts. They are typically slender metal rods with smooth surfaces to reduce friction with the first buffer retaining ring. The number of connecting rods can be set according to actual needs, such as two or four, to provide more stable guidance. The anti-detachment block located at the upper end of the connecting rod prevents the connecting rod from coming out of the first buffer fixing ring, ensuring the integrity and safety of the buffer mechanism. It can be the enlarged diameter section at the upper end of the connecting rod, or it can be fixed to the connecting rod by threads, pins, or other means.

[0066] Through the above technical solution, when the conical cutting blade contacts the poultry head, the upper end of the buffer rod is embedded in the limiting groove, ensuring the vertical movement trajectory of the buffer rod and effectively preventing lateral swaying. The buffer spring, sleeved on the buffer rod, can precisely absorb the impact load generated at the moment of contact between the conical cutting blade and the poultry head, thus significantly reducing the initial impact force and protecting the blade and the poultry head. Simultaneously, the connecting rod passes through the first buffer fixing ring and is limited by the anti-detachment block, providing a stable reset guide for the buffer mechanism, ensuring the conical cutting blade can smoothly return to its initial position, and effectively preventing components from detaching under high-speed movement or impact, greatly improving the stability and safety of the cutting process. This precise buffer and shock absorption structure makes the cutting process smoother and more accurate, effectively extending the service life of the blade and improving the quality of poultry meat cutting.

[0067] Please continue reading. Figures 7 to 10 As shown, the mounting component 7 includes multiple mounting threaded holes 71 and a limiting groove 72 formed on the upper end of the tapered cutting blade 57. An anti-detachment groove 73 is formed within the limiting groove 72. Multiple mounting screws 74, corresponding to the mounting threaded holes 71, are evenly spaced on the U-shaped blade holder 56 for initial fixing of the tapered cutting blade 57. U-shaped support blocks 75 are provided at both the front and rear ends of the horizontal plate of the U-shaped blade holder 56. Guide rail grooves (not shown) are formed on the inner sides of the two vertical plates of the U-shaped support block 75. U-shaped anti-detachment blocks 76, corresponding to the anti-detachment grooves 73, are slidably embedded in the guide rail grooves. Sliding protrusions 77, corresponding to the guide rail grooves, are formed on the outer sides of the two vertical plates of the U-shaped anti-detachment block 76. A trapezoidal slider 78 is provided on the inner side of the horizontal plate of the U-shaped anti-detachment block 76, and the trapezoidal slider 78 is connected to the U-shaped support block 75 via a return spring 79. The upper surface of the U-shaped knife holder 56 is provided with a second screw 8 at both the front and rear ends. The lower end of the second screw 8 is provided with a trapezoidal lifting block 81 that cooperates with the trapezoidal slider 78. The second screw 8 is screwed and fixed by a fixing nut 82.

[0068] Specifically, the mounting threaded hole at the upper end of the tapered cutting blade engages with the mounting screw on the U-shaped blade holder, providing initial positioning and axial clamping force for the blade. The limiting slot provides precise radial positioning and anti-rotation for the blade, ensuring that the blade does not deflect during cutting. The anti-disengagement groove inside the limiting slot is a key structure for preventing blade disengagement; its special shape is designed to mechanically interlock with the U-shaped anti-disengagement block. The U-shaped support block on the U-shaped blade holder provides stable support and guidance for the U-shaped anti-disengagement block, and its internal guide rail groove ensures smooth sliding of the U-shaped anti-disengagement block during locking and unlocking. The U-shaped anti-disengagement block moves within the guide rail groove via its sliding protrusion; when it reaches its position, it precisely engages with the anti-disengagement groove on the tapered cutting blade, thus forming a reliable anti-disengagement lock. The cooperation of the trapezoidal slider and the trapezoidal lifting block converts the rotational motion of the second screw into the horizontal movement of the U-shaped anti-disengagement block. This inclined plane transmission mechanism provides a large locking force and achieves a self-locking effect. The reset spring provides a rebound force when unlocking, causing the U-shaped anti-detachment block to automatically return to the unlocked position, facilitating the removal of the blade. The second screw is precisely fixed by a retaining nut, ensuring that its rotation only produces axial displacement, thereby precisely controlling the lifting and lowering of the trapezoidal lifting block, and thus driving the movement of the U-shaped anti-detachment block.

[0069] Through the ingenious design of the aforementioned mounting components, the tapered cutting blade achieves quick and reliable locking and anti-detachment. When installing the blade, simply align the mounting threaded hole and limit slot on the blade with the corresponding position on the U-shaped blade holder. Then, by rotating the second screw, the trapezoidal lifting block drives the trapezoidal slider, which in turn drives the U-shaped anti-detachment block to slide along the guide rail groove and embed into the anti-detachment groove on the tapered cutting blade, forming a stable mechanical interlock. A return spring assists the U-shaped anti-detachment block in returning to its original position during unlocking, simplifying the operation. This design significantly reduces the time required for blade replacement and cleaning, improving equipment operating efficiency and maintenance convenience. Simultaneously, the interlocking structure of the U-shaped anti-detachment block and the anti-detachment groove, combined with the initial fixing by the mounting screws, ensures that the tapered cutting blade will not loosen or fall off under high-speed cutting and impact loads, greatly improving cutting accuracy and operational safety, and preventing a decrease in cutting quality or equipment damage due to blade loosening.

[0070] Please continue reading. Figures 1 to 8 As shown, this application further proposes that the first guide plate 11 and the second guide plate 13 are embedded with a U-shaped cooling pipe (not shown) for rapidly coagulating poultry blood when it flows through them. The cooling pipe is circulatedly connected to an external cold source. The inner side of the limiting frame 52 is embedded with a U-shaped air outlet pipe (not shown). The U-shaped air outlet pipe is connected to the high-pressure air inlet pipe 9, and multiple high-pressure jet heads 91 with downward-sloping air outlets are equidistantly arranged on the pipe body. After the conical cutting blade 57 retracts, the high-pressure jet head 91 sprays high-pressure airflow onto the blade surface to remove any residue that may be attached.

[0071] Specifically, the U-shaped cooling pipes embedded inside the first and second guide plates function to remove heat through circulating coolant, thereby lowering the temperature of the components they house. These U-shaped cooling pipes can be made of materials such as copper, stainless steel, or corrosion-resistant plastic, and are bent or coiled into a U-shape, pre-embedded or integrally formed inside the first and second guide plates. Both ends of the cooling pipe are connected to an external cold source (e.g., a refrigeration unit, a chilled water circulation system, or a liquid nitrogen cooling system) via flexible or rigid connectors, forming a closed loop. The cold source continuously supplies low-temperature coolant to the cooling pipes. As the coolant flows within the pipes, it absorbs heat from the surface of the guide plates, thus maintaining the guide plate surface at a low temperature. When blood or tissue fluid generated after the poultry head is cut comes into contact with the low-temperature guide plate surface, its temperature drops rapidly, accelerating coagulation, reducing liquid flow and diffusion, and facilitating subsequent cleaning.

[0072] Simultaneously, a loop-shaped air outlet pipe embedded in the inner side of the limiting frame is equipped with multiple high-pressure jet nozzles for spraying high-pressure airflow onto the target area at specific times. This loop-shaped air outlet pipe can be made of metal (such as stainless steel) or high-strength plastic, bent into a loop shape matching the inner side of the limiting frame, and then fixed or embedded within it. The high-pressure jet nozzles can be in the form of nozzles, fixed to the loop-shaped air outlet pipe via threaded connections or welding, ensuring their outlet direction is tilted downwards, directly facing the tapered cutting blade. The high-pressure air inlet pipe is responsible for delivering compressed air generated by an external high-pressure air source (such as an air compressor) to the loop-shaped air outlet pipe. The number and spacing of the jet nozzles can be optimized according to the size and shape of the tapered cutting blade to ensure that the high-pressure airflow evenly covers the blade surface. After the tapered cutting blade retracts, the high-pressure jet nozzles spray high-pressure airflow onto the blade surface to remove any adhering residue. This process is typically precisely controlled by a control system. When the telescopic cylinder drives the conical cutting blade to complete its upward and downward movement, and the position sensor detects that the blade has returned to its original position, the control system immediately triggers the solenoid valve of the high-pressure air source to open, allowing high-pressure gas to enter the loop-shaped outlet pipe through the high-pressure inlet pipe and be ejected from the high-pressure jet nozzle. After the injection continues for a certain period of time, the solenoid valve closes, completing one purging cycle.

[0073] Through the above technical solution, U-shaped cooling pipes are embedded inside the first and second guide plates and circulatedly connected to an external cold source. When blood or tissue fluid generated after poultry head cutting flows through the V-shaped guide channel, the low-temperature guide plate surface can rapidly cool the blood, promoting its rapid coagulation. This effectively reduces blood flow and diffusion, avoids contamination of equipment and the environment, and simplifies subsequent cleaning. Simultaneously, U-shaped air outlet pipes are embedded on the inner side of the limiting frame, and multiple downward-sloping high-pressure jet heads are installed, allowing high-pressure airflow to be sprayed onto the blade surface immediately after the conical cutting blade retracts. This high-pressure airflow utilizes its impact force to efficiently blow away poultry meat scraps, blood, or tissue fluid residue that may adhere to the blade surface during cutting, thereby maintaining the cleanliness of the conical cutting blade, preventing residue accumulation from affecting cutting accuracy and hygiene, extending blade life, and ensuring that every cut meets the expected precision and hygiene standards. These measures work synergistically to significantly improve the cleanliness, efficiency, and hygiene safety of the poultry cutting process.

[0074] In response, this application proposes a low surface energy precision cutting tool for preventing poultry meat from sticking. The tapered cutting blade has a tapered cross section and is coated with a low surface energy material to reduce the contact area and adhesion force with poultry meat.

[0075] This application further optimizes the specific parameters of the tapered cutting blade. Specifically, the tapered section angle of the tapered cutting blade is set to 15° to 30°. The tapered section design allows the blade to gradually open up the poultry tissue with less resistance when cutting into the poultry, forming a wedge-shaped separation effect, thereby reducing cutting resistance and decreasing the contact area between the blade and the poultry during cutting. Limiting the tapered section angle to the range of 15° to 30° is to maximize the wedge-entry effect and meat tissue separation efficiency during cutting while ensuring sufficient blade strength and durability. If the angle is too small, the blade may be too sharp but not strong enough, easily becoming dull or breaking; if the angle is too large, the cutting resistance will increase significantly, and the wedge-entry effect will be insignificant, potentially leading to uneven cutting or tearing of the meat tissue.

[0076] Meanwhile, the low surface energy material coated on the surface of the tapered cutting blade is preferably fluorocarbon resin or polytetrafluoroethylene (PTFE). Low surface energy materials are those with low surface free energy, effectively reducing the wettability of liquids or semi-solid substances on their surface, thereby reducing adhesion. Fluorocarbon resin and PTFE are typical low surface energy materials, possessing excellent chemical inertness, corrosion resistance, wear resistance, and an extremely low coefficient of friction. Coating the surface of the tapered cutting blade with these materials significantly reduces the adhesion of poultry meat tissue, fat, blood, etc., to the blade during cutting, ensuring the blade surface remains clean and reducing residue accumulation.

[0077] Furthermore, the coating thickness is precisely controlled within the range of 20-50 micrometers. Coating thickness is a key parameter affecting the performance of low surface energy materials and the lifespan of cutting tools. The 20-50 micrometer coating thickness range aims to ensure sufficient density and uniformity to fully utilize its low surface energy properties, while providing good wear resistance and extending tool life. If the coating is too thin, it may result in uneven coating or easy wear, affecting the anti-sticking effect; if the coating is too thick, it may affect the cutting accuracy of the tool, and even pose a risk of coating peeling off during cutting.

[0078] Furthermore, the surface energy of the tapered cutting blade is controlled within 18-25 dyn / cm. Surface energy is a physical quantity that measures the strength of the interaction between a material surface and external substances; the lower the surface energy, the better the anti-adhesion performance of the material. Controlling the surface energy of the tapered cutting blade within the range of 18-25 dyn / cm is based on in-depth research into the characteristics of poultry meat tissue and the cutting environment. By precisely controlling the selection of coating materials, preparation processes, and surface treatments, the blade surface achieves optimal anti-adhesion performance. Within this surface energy range, the adhesion between poultry meat tissue and the blade surface is minimized, thereby ensuring smooth cutting and minimizing post-cut residue.

[0079] Through the aforementioned technical solution, the conical cutting blade's tapered cross-section angle is precisely limited to 15° to 30°, allowing the blade to effectively separate poultry meat tissue at the optimal wedge angle when cutting into the poultry head, significantly reducing cutting resistance. Simultaneously, the blade surface is coated with a low surface energy material such as fluorocarbon resin or polytetrafluoroethylene, and the coating thickness is strictly controlled within 20-50 micrometers to ensure coating uniformity and durability. More importantly, the blade's surface energy is optimized to 18-25 dyn / cm, greatly reducing the adhesion of poultry meat tissue, fat, and blood to the blade. The synergistic effect of these parameters enables the conical cutting blade to achieve smoother and more precise cuts when cutting poultry meat, effectively preventing poultry meat from sticking to the blade surface, reducing friction and resistance during the cutting process, thereby improving cutting efficiency and blade lifespan, reducing the frequency of cleaning and maintenance, and ensuring the hygiene and quality of poultry meat cutting.

[0080] This application also discloses a precision cutting method for preventing poultry meat from sticking, based on the above-mentioned cutting tool, comprising the following steps performed in sequence: Step S1: Start the guide conveyor belt and the limiting conveyor belt, place the poultry head to be cut in the V-shaped entrance formed by the first guide plate and the second guide plate, so that the poultry head is conveyed forward with the head facing forward and the posture stable under the combined action of the guide anti-slip strip and the rubber limiting strip, so as to achieve the initial positioning and stability of the poultry head in three-dimensional space. Step S2: When the poultry head is delivered directly below the conical cutting blade, the position sensor sends a signal, and the telescopic cylinder is activated to drive the lifting plate, lifting rod and conical cutting blade to descend rapidly. Step S3: The conical cutting blade first contacts the limiting rod and slides along the guide surface of the limiting rod into the predetermined cutting line of the poultry head. At the same time, the buffer spring is compressed to absorb the initial impact, ensuring the accuracy of the cutting starting point. Step S4: The conical cutting blade continues to descend, and its conical blade cuts through the middle of the poultry head. The low surface energy coating causes the poultry meat tissue to separate instantly from the blade surface, significantly reducing the adhesion of meat scraps and blood clots, reducing cutting resistance and improving the smoothness of the cut surface. Step S5: After the conical cutting blade reaches the bottom dead center, the telescopic cylinder reverses its movement to drive the blade to rise and retract. At the same time, the high-pressure jet head performs pulse-style blowing on the blade surface to effectively remove residues and inhibit bacterial growth. Step S6: The blade returns to its initial position, completing the cutting of a single poultry head. The next poultry head is then cut by repeating steps S1 to S6 under the action of the conveyor belt, achieving continuous and efficient production.

[0081] The core innovation of this embodiment lies in the synergistic combination of a V-shaped flow channel and a limiting guide component to achieve stable three-dimensional spatial positioning of the poultry head during transport. Simultaneously, the introduction of a low surface energy coating on the conical cutting blade reduces adhesion during cutting, and a high-pressure jet nozzle's pulsed purging removes residue after cutting, significantly reducing blade sticking and poultry head displacement. Specifically, the guide anti-slip strip at the V-shaped inlet and the rubber limiting strip work together to prevent the poultry head from flipping or shifting; the cross-sectional angle of the conical blade, combined with the low surface energy coating, allows for instantaneous separation of the poultry meat tissue from the blade surface, reducing contact area and adhesion; the pulsed purging of the high-pressure jet nozzle removes residue as the blade retracts, preventing bacterial growth. Through this technical solution, the reduction in cutting quality caused by blade sticking and the cutting deviation caused by poultry head displacement in the prior art are systematically solved, achieving the technical effects of improving cutting accuracy, ensuring food safety, and increasing production efficiency.

[0082] This application further proposes a precision cutting method for preventing poultry meat from sticking. Based on the above cutting method, it also includes the following optional adjustment steps: adjusting the spacing between the limiting conveyor belts by driving the first screw to rotate by a synchronous motor; adjusting the height of the limiting rod by loosening the third bolt and moving the limiting rod axially along the fixed rod and then locking it, thereby adapting to poultry heads of different breeds or sizes; and in step S5, the high-pressure jet head uses an alternating pulse mode for blowing, with a blowing pressure of 0.5-0.8 MPa and a pulse width of 0.1-0.3 seconds.

[0083] Specifically, to accommodate poultry heads of different breeds or sizes, this application introduces a mechanism for adjusting the distance between the limiting conveyor belts. This mechanism is achieved by a synchronous motor driving the first screw to rotate. The first screw is typically designed with a bidirectional thread, and when driven to rotate by the synchronous motor, it can synchronously and precisely drive the moving blocks on both sides to move inward or outward, thereby adjusting the distance between the limiting conveyor belts. This adjustment method allows the system to dynamically adjust the width of the limiting channel according to the actual size of the poultry head to be processed, ensuring that the poultry head is always stably and appropriately clamped during conveying and cutting, avoiding damage caused by excessive tightness and preventing shaking or displacement caused by excessive looseness.

[0084] Furthermore, to further enhance adaptability to poultry heads of different sizes, this application also provides a solution for adjusting the height of the limiting rod. This limiting rod is used to press the poultry head down from above during cutting, preventing it from tipping over. By loosening the third bolt connecting the limiting rod and the fixing rod, the operator can move the limiting rod up and down along the axial direction of the fixing rod to adjust it to a position matching the current height of the poultry head. After adjustment, the limiting rod is fixed by re-locking the third bolt. This adjustable height design ensures that the limiting rod can effectively press and limit poultry heads of different heights, thereby maintaining the stable posture of the poultry head during cutting and avoiding cutting deviations or safety hazards caused by head tipping over.

[0085] Furthermore, to optimize the cleaning effect of the tapered cutting blade, this application improves the purging method of the high-pressure jet head in step S5. The high-pressure jet head uses an alternating pulse mode for purging, rather than continuous spraying. The alternating pulse mode refers to the high-pressure airflow being sprayed in short, intermittent pulses. This mode can generate stronger local impact force and turbulence effect, thereby more effectively stripping and removing poultry tissue, blood stains, and other residues adhering to the low surface energy coating of the tapered cutting blade.

[0086] The purging pressure for this alternating pulse mode is set within the range of 0.5-0.8 MPa. Within this pressure range, the high-pressure airflow has sufficient kinetic energy to powerfully remove stubborn residues from the blade surface without damaging the blade body or its low surface energy coating. Precise pressure control is crucial to ensuring cleaning effectiveness and blade life.

[0087] Meanwhile, the width of each pulse is set between 0.1 and 0.3 seconds. This short pulse width ensures the impact force of each jet while allowing for brief intervals between pulses, which facilitates airflow reorganization and repeated impact on residues, resulting in a more thorough cleaning. Precise control of the pulse width also helps optimize compressed air consumption and improve the energy efficiency of the cleaning process.

[0088] Through the above technical solutions, this application significantly improves the adaptability of the cutting system to poultry heads of different breeds and sizes, ensuring precise and stable cutting under various working conditions. Adjustable limit conveyor belt spacing and limit rod height allow the system to quickly and flexibly adapt to changes in the production line, reducing manual intervention and adjustment time. Simultaneously, the high-pressure jet head employing alternating pulse modes, combined with optimized blowing pressure and pulse width, can more efficiently and thoroughly remove residues from the conical cutting blades, effectively maintaining the blades' low surface energy characteristics and anti-sticking effect, thereby extending blade life, reducing maintenance costs, and ensuring the hygiene and continuity of the cutting process. These improvements collectively enhance the automation level, processing efficiency, and product quality of precision poultry cutting.

[0089] The present invention will be further described in detail below with reference to specific embodiments. These embodiments not only demonstrate the feasibility of the present invention, but also illustrate its superiority through detailed parameters and comparative data.

[0090] Example 1 (Standard Broiler Cutting Parameters)

[0091] A chicken head cutting blade for use in broiler slaughtering lines. The L-shaped support frame is welded from 304 stainless steel square tubing, with a 400mm spacing between the left and right sides. The first and second guide plates are made of 3mm thick 304 stainless steel plates, with a 25° inclination angle and a V-shaped opening of 80mm at the top and 40mm at the bottom. The guide conveyor belt is made of PU material, with trapezoidal anti-slip strips of 3mm height evenly spaced (50mm spacing) on ​​the belt body, and a linear speed of 0.2m / s. The limiting guide belt is also made of PU material, with hemispherical rubber limiting strips (10mm diameter, 5mm height, 40mm spacing) on ​​the belt body, and its linear speed is synchronized with the guide conveyor belt. The tapered cutting blade is made of high-speed tool steel (M2), with a tapered section angle of 20°, coated with a 35μm thick PTFE coating by plasma spraying, and a surface energy of 21 dyn / cm. The telescopic cylinder has a 32mm diameter, 80mm stroke, a descent speed of 0.1m / s, and a retraction speed of 0.15m / s. The buffer spring has a stiffness of 200 N / mm and a pre-compression of 5 mm. The high-pressure jet head has a pressure of 0.6 MPa, a pulse width of 0.2 s, and an alternating left-right pulse pattern. The U-shaped cooling pipe is circulated with 8℃ cold water.

[0092] Adjustment steps: Based on the average width of the chicken heads in this batch (approximately 40mm), input parameters through the human-machine interface. The PLC controls the synchronous motor to drive the first screw to rotate, adjusting the distance between the left and right limit conveyor belts to 44mm. Manually adjust the limit rod: Loosen the third bolt, adjust the lower edge of the limit rod to 22mm from the surface of the guide conveyor belt (approximately 20mm in height of the chicken head's nose bridge), and then tighten it.

[0093] Cutting Cycle: The chicken head enters through a V-shaped inlet, propelled forward by guide anti-slip strips and rubber limit strips. After the photoelectric photoelectric switch detects a chicken head obstruction signal, the PLC delays for 0.15 seconds (the distance from the detection point to the blade center on the conveyor belt is 30mm, linear speed 0.2m / s), triggering the cylinder to descend. After the blade contacts the limit rod, it slides along its inclined surface into the center line of the nose bridge, where the buffer spring compresses 12mm to absorb the impact. The cylinder continues to descend to a total stroke of 75mm (actual cutting depth approximately 25mm, completely cutting through the chicken head), then immediately retracts. Simultaneously with the retraction, the high-pressure jet head outputs three alternating pulses (left 0.2s - right 0.2s - left 0.2s, interval 0.1s). The total time for a single cycle is 1.2 seconds (including the conveyor belt stepping interval).

[0094] Results data: After 8 hours of continuous operation, approximately 24,000 chicken heads were cut. A sample inspection of the blade surface was conducted after every 200 cuts; no visible meat residue was found, and only a very small amount of blood disappeared after the air jet was applied. The cutting pass rate (centered cut, no tearing) was 99.7%. Compared to the circular saw used in the same factory (which requires stopping for cleaning every 30 minutes and has a pass rate of 92%), this embodiment shows a 40% increase in efficiency and eliminates the need for downtime cleaning.

[0095] Example 2 (cutting duck heads under high humidity conditions)

[0096] For duck heads, which have higher water content and harder cartilage, the following adjustments were made: the cone angle of the tapered cutting blade was changed to 15° (for greater sharpness), and the coating was changed to fluorocarbon resin with a thickness of 25μm and a surface energy of 19 dyn / cm. A U-shaped cooling pipe was circulated with 5℃ cold water to lower the surface temperature of the guide plate to 8-10℃, causing duck blood to coagulate within 2 seconds when it flows through. The spacing of the limiting conveyor belts was adjusted to 50mm (due to the wider duck heads), and the height of the limiting rods was adjusted to 25mm. The pressure of the high-pressure jet head was increased to 0.7MPa, with a pulse width of 0.15s, using a five-pulse pattern of left-right-center-left-right.

[0097] Cutting results: After continuously cutting 5000 duck heads, there was no adhesion on the blade surface, the cuts were smooth, and there was no blood seepage or contamination. When cutting duck heads with a traditional band saw, noticeable sticking to the blade occurs after every 100 heads, requiring water spraying for lubrication, which leads to blood splattering. This embodiment requires no lubricant, meeting higher hygiene standards.

[0098] Example 3 (Quick Blade Change Operation)

[0099] When the tapered cutting blade needs replacement due to wear, the procedure is as follows: First, turn off the air and power supply to the equipment. Loosen the two fixing nuts on the U-shaped blade holder, then use an Allen wrench to rotate the second screw in the reverse direction (about 3 turns), causing the trapezoidal lifting block to move upward. Under the action of the return spring, the trapezoidal slider slides outward, driving the U-shaped anti-disengagement block out of the anti-disengagement groove of the limit slot. At this time, unscrew the mounting screws (4 in total) on the side of the U-shaped blade holder, and you can pull out the old blade from below. When installing the new blade, insert the new blade into the U-shaped blade holder, aligning it with the mounting threaded hole, and pre-tighten the mounting screws but do not lock them completely. Then rotate the second screw in the forward direction, causing the trapezoidal lifting block to press down on the trapezoidal slider, driving the U-shaped anti-disengagement block to engage in the anti-disengagement groove. After hearing a "click," tighten the mounting screws and fixing nuts. The entire process requires no special tools and takes about 25 seconds. Compared to traditional blade replacement, which requires disassembling the entire blade holder (about 5 minutes), this method is more than 10 times more efficient.

[0100] Example 4 (Control System and Fault Handling)

[0101] This embodiment details the automated control logic. The equipment uses a Siemens S7-1200 PLC and is equipped with a 7-inch touchscreen. The operating interface allows setting the following parameters: conveyor belt speed (0.1-0.5m / s), cylinder descent delay time (0-0.5s), cylinder descent speed (0.05-0.2m / s), high-pressure jet pulse count (1-5), and pulse interval (0.05-0.3s). The system also has a self-diagnostic function: if the photoelectric sensor fails to detect a poultry head for 2 consecutive seconds, it is determined to be a material shortage, automatically pausing the conveyor belt and issuing an audible and visual alarm; if the cylinder descent and subsequent ascent exceed the timeout (more than 1 second without reaching the upper sensor), it is determined to be a blade jam, immediately stopping all actions and triggering an alarm. Equipment operating data (cumulative number of cuts, number of failures, average cycle time) is recorded in real time and can be exported to a USB flash drive.

[0102] Practical Application: During 30 days of continuous operation at a poultry processing plant, a total of 720,000 chicken heads were cut, with a mean time between failures (MTBF) of 120 hours, significantly higher than traditional equipment (approximately 20 hours). Maintenance records show that only weekly cleaning of the high-pressure jet filter, bi-weekly checking of the buffer spring preload, and bi-monthly replacement of the tapered cutting blade are required.

[0103] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A low surface energy precision cutting tool for preventing poultry meat from sticking, characterized in that: The system includes L-shaped support frames positioned on both sides of the conveying path. The left front and rear L-shaped support frames are connected to first guide plates via first connectors, and the right front and rear L-shaped support frames are connected to second guide plates via second connectors. Both the first and second guide plates are inclined inwards and cooperate to form a V-shaped flow channel. A guide conveyor belt for conveying poultry heads is embedded at the lower end of both. Support blocks are fixed to the upper surface of the horizontal plates of the L-shaped support frames via first bolts. A support frame is erected between the support blocks, and the lower surface of this support frame is provided with a... The limiting guide pieces press and limit the poultry head from above; U-shaped support frames are provided in the middle of the upper surface of the left and right support plates of the support frame; connecting support rods are provided on the inner sides of the two vertical plates of the U-shaped support frames at both ends; a limiting frame is embedded in the middle of the connecting support rods; a telescopic cylinder is embedded in the horizontal plate of the U-shaped support frame; a lifting plate is provided at the end of the telescopic rod of the telescopic cylinder; a lifting rod is embedded in the middle of the lifting plate and installed by a fixing nut; a U-shaped cutter holder is connected to the end of the lifting rod through a buffer and shock absorber; a conical cutting blade coated with a low surface energy material is installed on the U-shaped cutter holder through an installation piece; The cutting method of the aforementioned tool includes the following steps: S1. The poultry head is conveyed forward by the guide conveyor belt through the V-shaped guide channel, while the limiting guide component presses down on both ends of the poultry head from above to achieve stable limiting in three-dimensional space. S2. The telescopic cylinder drives the lifting plate and lifting rod to descend, causing the U-shaped knife holder and conical cutting blade to cut vertically into the poultry head; S3. During the cutting process, the buffer and shock absorber absorbs the impact load, while the tapered cross section of the tapered cutting blade and the low surface energy coating reduce the contact area and adhesion with the poultry meat. S4. After the cutting is completed, the telescopic cylinder drives the conical cutting blade to retract, completing one cutting cycle.

2. The low surface energy poultry meat anti-sticking precision cutting tool according to claim 1, characterized in that: The upper surface of the guide conveyor belt is provided with multiple guide anti-slip strips at equal intervals. The first connector and the second connector have the same structure, both including an extension plate extending downward from the end of the L-shaped support frame horizontal plate. The extension plate is connected and fixed to the corresponding guide plate by a second bolt, thereby allowing the tilt angle of the guide plate to be adjusted.

3. The low surface energy poultry meat anti-sticking precision cutting tool according to claim 1, characterized in that: The limiting guide includes a limiting conveyor belt. A first screw is rotatably installed at both the front and rear ends between the left and right horizontal plates of the support frame. A synchronous motor for driving the first screw to rotate is installed at both the front and rear ends inside the support frame. A movable block is spirally sleeved on both the left and right ends of the first screw. A U-shaped support plate is installed on the lower surface of the movable block at both the front and rear ends. The limiting conveyor belt is installed inside the U-shaped support plate. Multiple rubber limiting strips are evenly arranged on the belt body of the limiting conveyor belt. The distance between the left and right limiting conveyor belts can be adjusted by controlling the rotation direction of the first screw by the synchronous motor to accommodate poultry heads of different sizes. The surface thread of the first screw is a bidirectional thread.

4. The low surface energy poultry meat anti-sticking precision cutting tool according to claim 1, characterized in that: A fixing rod is fixed at the front end of the support frame. A limiting rod for preventing the poultry head from flipping over during the cutting process is fixed to the fixing rod by a third bolt. The height of the limiting rod can be adjusted along the axial direction of the fixing rod.

5. A low surface energy precision cutting tool for preventing poultry meat from sticking, as described in claim 1, characterized in that: The buffer and shock absorber includes a limiting groove at the lower end of the lifting rod, a buffer spring sleeved on the buffer rod, and a first buffer fixing ring disposed on the outer side of the lower end of the lifting rod. The upper end of the buffer rod is embedded in the limiting groove, and a connecting block is connected to the lower end of the buffer rod. The connecting block is connected to the middle of the upper surface of the U-shaped cutter holder. A second buffer fixing ring is sleeved on the upper end of the connecting block. Connecting rods passing through the first buffer fixing ring are connected to both the front and rear ends of the upper surface of the second buffer fixing ring. An anti-detachment block is provided at the upper end of the connecting rod, thereby providing elastic buffering and reset guidance when the conical cutting blade contacts the poultry head.

6. A low surface energy precision cutting tool for preventing poultry meat from sticking, as described in claim 1, characterized in that: The mounting component includes multiple mounting threaded holes and a limiting slot on the upper end of the tapered cutting blade. An anti-detachment groove is provided within the limiting slot. Multiple mounting screws corresponding to the mounting threaded holes are evenly spaced on the U-shaped blade holder. U-shaped support blocks are provided at both the front and rear ends of the horizontal plate of the U-shaped blade holder. Guide rail grooves are provided on the inner sides of the two vertical plates of the U-shaped support blocks. U-shaped anti-detachment blocks corresponding to the anti-detachment grooves are slidably embedded in the guide rail grooves. Sliding protrusions corresponding to the guide rail grooves are provided on the outer sides of the two vertical plates of the U-shaped anti-detachment blocks. A trapezoidal slider is provided on the inner side of the horizontal plate of the U-shaped anti-detachment block. The trapezoidal slider is connected to the U-shaped support block via a return spring. A second screw is spirally embedded at both the front and rear ends of the horizontal plate of the U-shaped blade holder. A trapezoidal lifting block that cooperates with the trapezoidal slider is provided at the lower end of the second screw. The second screw is spirally fixed by a fixing nut. By rotating the second screw, the trapezoidal slider is pushed, thereby driving the U-shaped anti-detachment block to embed into the anti-detachment groove, achieving rapid locking and anti-detachment of the blade.

7. A low surface energy precision cutting tool for preventing poultry meat from sticking, as described in claim 1, characterized in that: The first guide plate and the second guide plate are embedded with a U-shaped cooling pipe for rapid coagulation of poultry blood when it flows through. The cooling pipe is circulatedly connected to an external cold source. The inner side of the limiting frame is embedded with a U-shaped air outlet pipe, which is connected to a high-pressure air inlet pipe. Multiple high-pressure jet heads with downward-sloping air outlets are equidistantly arranged on the pipe body. After the conical cutting blade retracts, the high-pressure jet heads spray high-pressure airflow onto the blade surface to remove any residue that may be attached.

8. A low surface energy precision cutting tool for preventing poultry meat from sticking, as described in claim 1, characterized in that: The tapered cutting blade has a tapered cross-section angle of 15° to 30°, and its surface is coated with a low surface energy material, which is fluorocarbon resin or polytetrafluoroethylene, with a coating thickness of 20-50 micrometers and a surface energy of 18-25 dyn / cm.

9. A method for precision cutting poultry meat to prevent sticking using a knife according to any one of claims 1 to 8, characterized in that, The steps are executed in the following order: Step S1: Start the guide conveyor belt and the limiting conveyor belt, place the poultry head to be cut in the V-shaped entrance formed by the first guide plate and the second guide plate, so that the poultry head is conveyed forward with the head facing forward and the posture stable under the combined action of the guide anti-slip strip and the rubber limiting strip. Step S2: When the poultry head is delivered directly below the conical cutting blade, the position sensor sends a signal, and the telescopic cylinder is activated to drive the lifting plate, lifting rod and conical cutting blade to descend rapidly. Step S3: The conical cutting blade first contacts the limiting rod and slides along the guide surface of the limiting rod into the predetermined cutting line of the poultry head, while the buffer spring is compressed to absorb the initial impact. Step S4: The conical cutting blade continues to descend, and its conical blade cuts through the middle of the poultry head. The low surface energy coating causes the poultry meat tissue to separate instantly from the blade surface. Step S5: After the tapered cutting blade reaches the bottom dead center, the telescopic cylinder reverses its movement to drive the blade to rise and retract, while the high-pressure jet head performs pulse-style blowing on the blade surface. Step S6: The blade returns to its initial position, completing the cutting of a single poultry head. The next poultry head is then cut using the conveyor belt, and steps S1 to S6 are repeated.

10. A method for precision cutting poultry meat to prevent sticking according to claim 9, characterized in that: It also includes the following optional adjustment steps: adjusting the spacing between the limiting conveyor belts by driving the first screw to rotate by a synchronous motor; adjusting the height of the limiting rod by loosening the third bolt and moving the limiting rod axially along the fixed rod and then locking it, thereby adapting to different breeds or sizes of poultry heads; and in step S5, the high-pressure jet head uses an alternating pulse mode for purging, with a purging pressure of 0.5-0.8MPa and a pulse width of 0.1-0.3 seconds.

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