A kind of processing equipment and processing method of quick-frozen fish fillet without pulp

Abstract

The application discloses a kind of production and processing equipment and processing method of quick-frozen fish fillet without pulp, it is related to fish fillet production and processing technical field, including workbench, the upper surface right side of workbench is fixedly installed with conveying table, the upper surface of conveying table is fixedly installed with U-shaped frame, the inside of the both sides of U-shaped frame is fixedly installed with fixed rod, the top of U-shaped frame is provided with pusher, by setting down pressure limiting assembly, when slice knife is vertically down inclined cutting when being driven by supporting frame, rack one is driven by supporting frame and moves down and drives pinion to rotate, pinion drives spur gear to rotate synchronously, spur gear drives rack two to slide vertically along the inner wall of limiting block two, so that the limiting plate at the bottom of rack two contacts the upper surface of fish fillet and applies vertical pressure before the cutting edge of slice knife, effectively overcome the horizontal component force generated by blade bevel, prevent fish fillet from being pushed back, so as to avoid the problem that slice is thick in front and thin in back or not cut, ensure that the thickness of each fish fillet is uniform, and section is complete.

Description

Technical Field

[0001] This invention relates to the field of fish fillet production and processing technology, specifically to a production and processing equipment and method for quick-frozen fish fillets without slurry. Background Technology

[0002] No-slurry quick-frozen fish fillets are a convenient aquatic product that has undergone complete pretreatment: after live fish are bled, scaled, and sliced, seasonings, water-retaining agents, and starch are evenly coated on the surface of the fish fillets through a vacuum tumbling process to form a paste, which is then rapidly frozen at -35℃ or below. Consumers do not need to thaw or wash the fillets after purchase, nor do they need to marinate or coat them with the paste themselves. They can be cooked directly after opening the bag. The core advantages are that they can be cooked immediately after opening the bag, have a tender and smooth texture, and a long shelf life. When preparing them, the fish needs to be sliced ​​at an angle.

[0003] In existing technologies, the process of quick-frozen fish fillets without thawing involves pre-treating and deboned fish fillets that have been skinned and deboned, allowing them to thaw at low temperatures or remain semi-frozen to ensure firmness. Then, a slicing machine with a set blade assembly cuts the fillets diagonally at a predetermined angle and thickness to increase surface area and improve texture and marinade adhesion. The sliced ​​fillets are then separated from meat scraps and collected via a conveyor belt. After collection, they undergo a short-term negative pressure permeation process at low temperatures with a compound water-retaining agent, starch, and seasoning liquid, eliminating the need for thawing. Finally, the fillets are rapidly frozen to below -18°C using a freezer, and then weighed, tested for metal, and vacuum-packed. This process produces a ready-to-cook, thaw-free, diagonally sliced ​​fish fillet product that can be cooked directly without thawing.

[0004] However, when making a diagonal cut, as the blade descends vertically and cuts into the fish fillet, the angled surface of the blade generates a backward horizontal force on the fillet. Because the fish fillet is soft, slippery, and sticky, this force pushes the fillet backward, resulting in fillets that are thicker at the front and thinner at the back, or even unable to be cut. This uneven thickness leads to inconsistent heating during subsequent cooking; thinner areas are prone to overcooking and becoming tough, while thicker areas may be undercooked, severely affecting the taste and quality of the finished product. Uncut fillets will stick to the raw materials, causing material waste, reduced production efficiency, and increased difficulty in separating scraps and offcuts, thereby reducing the overall yield and the standardization of product specifications.

[0005] While this solves the problem of fish fillets being pushed backward, after the oblique cut, due to the slurry on the surface of the fillets and the adsorption effect of the oblique blade, the cut fillets will stick tightly to the lower surface of the blade and rise with it, unable to fall onto the conveyor belt. The stuck fillets will be carried back to the cutting area by the blade, causing secondary or overlapping cuts, resulting in broken fillets and incomplete shapes, which seriously affects the product appearance and standardization. The accumulation of fillets on the blade or blade holder will block the cutting channel, forcing the production line to stop for cleaning and reducing continuous operation efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a production and processing equipment and method for quick-frozen fish fillets without batter, so as to solve the problem of avoiding fish fillet accumulation and sticking to the blade.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a production and processing equipment for quick-frozen fish fillets without slurry, comprising a workbench, a conveyor fixedly installed on the right side of the upper surface of the workbench, a U-shaped frame fixedly installed on the upper surface of the conveyor, fixing rods fixedly installed inside both sides of the U-shaped frame, a pusher installed at the top of the U-shaped frame, a receiving frame installed at one end of the output shaft of the pusher, a slicing knife installed on the lower surface of the receiving frame, and the inner walls on both sides of the receiving frame being slidably connected to the outer surfaces of the fixing rods, a downward pressure limiting component installed on the right side of the receiving frame, and an upward cleaning component installed on the front of the receiving frame, wherein the power input ends of the downward pressure limiting component and the upward cleaning component are both operated and opened by the downward force of the receiving frame.

[0008] Preferably, the downward limiting assembly includes a rack, a limiting block, a rotating rod, a pinion, a rotating rod, and a large gear. The left side of the rack is fixedly installed to the right side of the receiving frame, the left side of the limiting block is fixedly installed to the right side of the U-shaped frame, the outer surface of the rotating rod is rotatably connected to the inner wall of the limiting block, the inside of the pinion is fixedly installed to the outer surface of the rotating rod, the outer surface of the rotating rod is rotatably installed to the inner wall of the limiting block, and the inside of the large gear is fixedly installed to the outer surface of the rotating rod.

[0009] Preferably, the upward cleaning assembly includes a rack three, a limiting block three, a rotating shaft, a gear ring one, a one-way clutch, and a gear two. The left side of the rack three is fixedly installed with the right side of the receiving frame, the left side of the limiting block three is fixedly installed with the front of the U-shaped frame, the outer surface of the rotating shaft is rotatably installed with the inner wall of the limiting block three, the inside of the gear ring one is fixedly installed with the outer surface of the rotating shaft, the inside of the one-way clutch is installed with the outer surface of the rotating shaft, and the inner ring of the gear two is installed with the outer surface of the one-way clutch.

[0010] Preferably, the outer surface of the pinion meshes with the right side of the lowered rack, and the outer surface of the pinion meshes with the outer surface of the large gear.

[0011] Preferably, a second limiting block is fixedly installed on the upper surface of the first limiting block, and a second rack is slidably installed on the inner wall of the second limiting block.

[0012] Preferably, the left side of the rack two meshes with the outer surface of the large gear, and a limit plate is fixedly installed at the bottom of the rack two.

[0013] Preferably, a rectangular block is fixedly installed on the upper surface of the workbench, and a rack four is slidably connected to the inner wall of the rectangular block. The upper surface of the rack four meshes with the outer surface of the gear two, and a cleaning plate is installed on the left side of the rack four.

[0014] Preferably, a drive motor is installed on the front of the conveyor, a transmission roller is fixedly installed on the output shaft of the drive motor, and a conveyor belt is driven to be installed on the outer surface of the transmission roller.

[0015] Preferably, a collection box is fixedly installed on the left side of the upper surface of the workbench, and a partition is installed inside the collection box to distinguish between normal conveying and feeding and scraping conveying and feeding.

[0016] A method for producing quick-frozen fish fillets without battering includes the following specific steps: S1. After bleeding, scaling, gutting, and deboning live fish, boneless fish fillets are obtained. These fillets are then moderately thawed in a low-temperature environment or kept semi-frozen to ensure firmness. The pre-treated fish fillets are placed on the upper surface of the conveyor belt of the conveyor table. The drive motor is started, and the output shaft of the drive motor drives the transmission roller to rotate. The transmission roller drives the conveyor belt to transport the fish fillets to the right. S2. When the fish fillet is conveyed to the area below the U-shaped frame by the conveyor belt, the pusher is activated. The output shaft of the pusher drives the receiving frame to slide vertically downwards along the outer surface of the fixed rod. The slicing blade, which forms a fixed angle with the vertical direction on the lower surface of the receiving frame, cuts into the fish fillet at an angle. Simultaneously, rack one on the right side of the receiving frame moves downwards, driving the small gear inside the limiting block one to rotate. The small gear drives the large gear to rotate synchronously, and the large gear drives rack two to slide vertically downwards along the inner wall of the limiting block two. This causes the limiting plate at the bottom of rack two to contact the upper surface of the fish fillet before the tip of the slicing blade and apply vertical pressure, preventing the horizontal component of the blade's inclined surface from pushing the fish fillet backwards and ensuring uniform slice thickness. S3. After the slicing blade completes the cutting, the pusher drives the receiving frame to return vertically upward along the fixed rod. Rack 1 moves upward and drives the pinion to rotate in the opposite direction, causing the limiting plate to reset upward and release the clamping force. Simultaneously, rack 3 on the front of the receiving frame moves upward, driving gear ring 1 within the limiting block 3 to rotate. Gear ring 1 drives the rotating shaft to rotate, and the rotating shaft transmits power to gear 2 through a locked one-way clutch. Gear 2 drives rack 4 to slide horizontally along the inner wall of the rectangular block, causing the cleaning plate on the left side of rack 4 to extend forward, tightly adhering to the lower surface of the slicing blade, forcibly scraping away the adhered fish fillets onto the upper surface of the conveyor belt. S4. The fish fillets that have been shoveled off continue to be conveyed by the conveyor belt. The fish fillets that fall normally and those that fall off the cleaning plate shovel fall into different areas separated by partitions in the collection box on the surface of the workbench. The collected fish fillets are then subjected to short-term negative pressure permeation treatment without slurry at low temperature with auxiliary materials such as compound water-retaining agent, starch, and seasoning liquid. Finally, the fish fillets are quickly frozen by a single-freezing machine, and then weighed, metal detected, and vacuum-packed to complete the preparation of the finished product of quick-frozen obliquely sliced ​​fish fillets without slurry.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting a downward limiting component, ensures that when the receiving frame drives the slicing blade to cut vertically downwards at an angle, rack one moves downwards with the receiving frame and drives the pinion to rotate. The pinion drives the large gear to rotate synchronously, and the large gear drives rack two to slide vertically downwards along the inner wall of limiting block two. This causes the limiting plate at the bottom of rack two to contact the upper surface of the fish fillet before the tip of the slicing blade and apply vertical pressure. This effectively overcomes the backward horizontal force generated by the inclined surface of the blade, preventing the fish fillet from being pushed backwards. This avoids the problem of slices being thicker at the front and thinner at the back or not being able to cut through, ensuring that each fish fillet has a uniform thickness and an intact cross-section, improving the heat consistency, taste quality, and product yield during subsequent cooking.

[0018] This invention utilizes an upward-moving cleaning component. When the receiving frame drives the slicing blade vertically upwards for its return stroke, rack three moves upwards with the receiving frame and drives gear ring one to rotate. Gear ring one, via a rotating shaft, engages a one-way clutch, transmitting power to gear two. Gear two drives rack four to slide horizontally along the inner wall of the rectangular block, causing the cleaning plate on the left side of rack four to extend forward, adhering tightly to the lower surface of the slicing blade, forcibly removing fish fillets adhering to the surface slurry and the inclined blade. This purely mechanical linkage structure initiates the material removal action only during the slicing blade's return stroke. During downward cutting, the one-way clutch slips, and the cleaning plate remains stationary. This avoids the problems of broken or incomplete fish fillets caused by secondary or overlapping cutting, and also prevents fish fillets from accumulating and clogging the cutting channel, reducing the frequency of production line downtime for cleaning and improving continuous operation efficiency and product standardization. Simultaneously, the collection box on the upper surface of the worktable is equipped with a partition to distinguish between normal conveying and scraping conveying, facilitating material classification and collection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A top-view structural diagram; Figure 3 For the present invention Figure 1 A schematic diagram of the right-side view structure; Figure 4 For the present invention Figure 1 Internal structure diagram; Figure 5 For the present invention Figure 4 A top-view structural diagram; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A; Figure 7 For the present invention Figure 4 A schematic diagram of the side view structure; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B.

[0020] In the diagram: 1. Workbench; 2. Conveyor; 3. Drive motor; 4. Conveyor roller; 5. Conveyor belt; 6. Collection box; 7. Partition; 8. U-shaped frame; 9. Fixing rod; 10. Pusher; 11. Receiving frame; 12. Slicing blade; 13. Downward pressure limiting assembly; 131. Rack 1; 132. Limiting block 1; 133. Rotating rod 1; 134. Small gear; 135. Rotating rod 2; 136. Large gear; 137. Limiting block 2; 138. Rack 2; 139. Limiting plate; 14. Upward cleaning assembly; 141. Rack 3; 142. Limiting block 3; 143. Rotating shaft; 144. Gear ring 1; 145. One-way clutch; 146. Gear 2; 147. Rectangular block; 148. Rack 4; 149. Cleaning plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 4 , Figure 5 and Figure 6As shown, the present invention provides a technical solution: a production and processing equipment for quick-frozen fish fillets without slurry, including a workbench 1, a conveyor 2 fixedly installed on the right side of the upper surface of the workbench 1, a U-shaped frame 8 fixedly installed on the upper surface of the conveyor 2, fixing rods 9 fixedly installed inside both sides of the U-shaped frame 8, a pusher 10 installed at the top of the U-shaped frame 8, a receiving frame 11 installed at one end of the output shaft of the pusher 10, a slicing blade 12 installed on the lower surface of the receiving frame 11, and both inner walls of the receiving frame 11 slidingly connected to the outer surface of the fixing rods 9, a downward pressure limiting component 13 installed on the right side of the receiving frame 11, and an upward movement cleaning component 14 installed on the front of the receiving frame 11. The power input ends of the downward pressure limiting component 13 and the upward movement cleaning component 14 are both opened by the downward movement force of the receiving frame 11. The downward pressure limiting component 13 includes a rack 131, a limiting block 132, a rotating rod 133, and a pinion 134. The rotating rod 135 and the large gear 136 are fixedly installed on the left side of the rack 131 and the right side of the support frame 11. The left side of the limiting block 132 is fixedly installed on the right side of the U-shaped frame 8. The outer surface of the rotating rod 133 is rotatably connected to the inner wall of the limiting block 132. The inside of the small gear 134 is fixedly installed to the outer surface of the rotating rod 133. The outer surface of the rotating rod 135 is rotatably installed to the inner wall of the limiting block 132. The inside of the large gear 136 is fixedly connected to the rotating rod 135 and the large gear 136. The outer surface of rod 135 is fixedly installed. The outer surface of pinion 134 meshes with the right side of rack 131 after it is moved down. The outer surface of pinion 134 meshes with the outer surface of gear 136. Limiting block 137 is fixedly installed on the upper surface of limiting block 132. Rack 138 is slidably installed on the inner wall of limiting block 137. The left side of rack 138 meshes with the outer surface of gear 136. Limiting plate 139 is fixedly installed at the bottom of rack 138.

[0023] Specifically, a conveyor 2 is installed on the workbench 1 to continuously transport the fish fillets. Combined with a pusher 10 mounted on the U-shaped frame 8, this drives the receiving frame 11 and the slicing blade 12 downwards for slicing. This allows for fast and precise slicing of the fish fillets, improving production efficiency and meeting the needs of large-scale production. The downward limiting component 13 moves down through the receiving frame 11, causing the rack 131 to move down, which in turn causes the pinion 134 to rotate. The pinion 134 then drives the large gear 136 to rotate, and the large gear 136 in turn drives the rack 138 and the limiting plate 139 to move down. This helps to limit the movement of the fish fillets during the slicing process, preventing them from moving and ensuring the uniformity and integrity of the slices, thus improving product quality.

[0024] according to Figure 4 , Figure 7 and Figure 8As shown, the upward cleaning assembly 14 includes a rack 3 141, a limit block 3 142, a rotating shaft 143, a gear ring 144, a one-way clutch 145, and a gear 2 146. The left side of the rack 3 141 is fixedly installed with the right side of the receiving frame 11. The left side of the limit block 3 142 is fixedly installed with the front of the U-shaped frame 8. The outer surface of the rotating shaft 143 is rotatably installed with the inner wall of the limit block 3 142. The inside of the gear ring 144 is fixedly installed with the outer surface of the rotating shaft 143. The inside of the one-way clutch 145 is installed with the outer surface of the rotating shaft 143. The inner ring of the gear 2 146 is installed with the outer surface of the one-way clutch 145. A rectangular block 147 is fixedly installed on the upper surface of the worktable 1. A rack 4 148 is slidably connected to the inner wall of the rectangular block 147. The upper surface of the rack 4 148 meshes with the outer surface of the gear 2 146. A cleaning plate 149 is installed on the left side of the rack 4 148.

[0025] Specifically, the upward-moving cleaning component 14 achieves automatic cleaning by leveraging the upward movement of the receiving frame 11. After the slicing operation is completed, the upward movement of the receiving frame 11 drives the rack 141 upward, which in turn drives a series of transmission components, ultimately moving the cleaning plate 149 to the working area for cleaning. This effectively and promptly removes debris and impurities generated during the slicing process, keeping the workbench and equipment clean, meeting the hygiene requirements of food processing, preventing impurities from contaminating subsequently processed fish fillets, and ensuring product quality and safety. Furthermore, by setting a one-way clutch 145, the transmission between the rotating shaft 143 and the gear 146 is unidirectional. When the receiving frame 11 moves upward, the power can be transmitted smoothly, driving the cleaning plate 149 to move for cleaning; while in other working conditions such as when the receiving frame 11 moves downward, there will be no reverse transmission interfering with the cleaning action, ensuring the orderliness and accuracy of the cleaning process, and ensuring that each cleaning achieves the expected results.

[0026] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a drive motor 3 is installed on the front of the conveyor table 2. A transmission roller 4 is fixedly installed on the output shaft of the drive motor 3. A conveyor belt 5 is installed on the outer surface of the transmission roller 4. A collection box 6 is fixedly installed on the left side of the upper surface of the worktable 1. A partition 7 is installed inside the collection box 6, and the partition 7 is used to distinguish between normal conveying and scraping conveying.

[0027] Specifically, the drive motor 3 located on the front of the conveyor 2 provides stable and continuous power for the entire conveying process. The drive motor 3 drives the transmission roller 4 on the output shaft to rotate, which in turn drives the conveyor belt 5 to circulate, smoothly and quickly transferring the quick-frozen fish fillets without batter from one workstation to another, ensuring the continuity of the production process, improving production efficiency, and meeting the needs of large-scale production. Furthermore, the drive motor 3 can precisely control the running speed of the conveyor belt 5 by adjusting its rotation speed, thereby flexibly adjusting the conveying rhythm of the fish fillets according to the requirements of different production stages. For example, in the slicing stage, the moving speed of the conveyor belt 5 can be reasonably set according to the cutting speed of the slicing blade 12 to ensure that each fish fillet is accurately cut, improving the uniformity and quality stability of the slices. The collection box 6, which is fixedly installed on the left side of the upper surface of the workbench 1, provides a dedicated collection area for the sliced ​​fish fillets and any waste that may be generated. The partition 7 set inside the collection box 6 rationally divides the collection space, clearly distinguishing between the finished fish fillets that are being conveyed normally and the waste that is being scraped off, facilitating the subsequent packaging of the finished products and the unified cleaning of the waste, thus improving the cleanliness and management efficiency of the production site.

[0028] A method for producing quick-frozen fish fillets without battering includes the following specific steps: S1. After bleeding, scaling, gutting, and deboning live fish, boneless fish fillets are obtained. These fillets are then moderately thawed in a low-temperature environment or kept semi-frozen to ensure firmness. The pre-treated fish fillets are placed on the upper surface of the conveyor belt 5 of the conveyor platform 2. The drive motor 3 is started, and the output shaft of the drive motor 3 drives the transmission roller 4 to rotate. The transmission roller 4 drives the conveyor belt 5 to transport the fish fillets to the right. S2. When the fish fillet is conveyed by the conveyor belt 5 to the area below the U-shaped frame 8, the pusher 10 is activated. The output shaft of the pusher 10 drives the receiving frame 11 to slide vertically downward along the outer surface of the fixed rod 9. The slicing blade 12, which forms a fixed angle with the vertical direction on the lower surface of the receiving frame 11, cuts into the fish fillet at an angle. At the same time, the rack 131 on the right side of the receiving frame 11 moves downward. The rack 131 drives the small gear 134 inside the limiting block 132 to rotate. The small gear 134 drives the large gear 136 to rotate synchronously. The large gear 136 drives the rack 138 to slide vertically downward along the inner wall of the limiting block 137. This causes the limiting plate 139 at the bottom of the rack 138 to contact the upper surface of the fish fillet before the tip of the slicing blade 12 and apply vertical pressure. This prevents the horizontal component of the blade's inclined surface from pushing the fish fillet backward, ensuring uniform slice thickness. S3. After the slicing blade 12 completes the cutting, the pusher 10 drives the receiving frame 11 to return vertically upward along the fixed rod 9. The rack 131 moves upward and drives the pinion 134 to rotate in the opposite direction, causing the limiting plate 139 to reset upward and release the clamping. At the same time, the rack 3 141 on the front of the receiving frame 11 moves upward. The rack 3 141 drives the gear ring 144 in the limiting block 3 142 to rotate. The gear ring 144 drives the rotating shaft 143 to rotate. The rotating shaft 143 transmits power to the gear 2 146 through the locked one-way clutch 145. The gear 2 146 drives the rack 4 148 to slide horizontally along the inner wall of the rectangular block 147, causing the cleaning plate 149 on the left side of the rack 4 148 to extend forward close to the lower surface of the slicing blade 12, forcibly scraping the adhered fish slices off to the upper surface of the conveyor belt 5. S4. The fish fillets that have been shoveled off continue to be conveyed by the conveyor belt 5. The fish fillets that fall normally and the fish fillets shoveled off by the cleaning plate 149 fall into different areas of the collection box 6 on the upper surface of the workbench 1, which are separated by the partition 7. The collected fish fillets are then subjected to short-term negative pressure permeation treatment without slurry at low temperature with auxiliary materials such as compound water-retaining agent, starch, and seasoning liquid. Finally, the fish fillets are quickly frozen by a single-freezing machine, and then weighed, metal detected and vacuum packaged to complete the preparation of the finished product of quick-frozen obliquely cut fish fillets without slurry.

[0029] The overall mechanism achieves the following effect: Before the equipment starts, the drive motor 3 drives the transmission roller 4 to rotate, and the transmission roller 4 drives the conveyor belt 5 to start running. The pre-treated and semi-frozen boneless fish fillets are placed on the upper surface of the conveyor belt 5 and conveyed to the right by the conveyor belt 5. The collection box 6 on the left side of the upper surface of the workbench 1 is equipped with a partition 7 to distinguish between normal conveying and scraping conveying. When the fish fillets are conveyed by the conveyor belt 5 to the U-shaped frame 8, the pusher 10 is activated, and its output shaft drives the receiving frame 11 to slide vertically downward along the outer surface of the fixed rod 9. The slicing blade 12 set on the lower surface of the receiving frame 11 moves downward accordingly. The slicing blade 12 is fixed at a 15-30° angle with the vertical direction and cuts into the fish fillets in an oblique manner. The rack 131 fixedly installed on the right side of the receiving frame 11 moves downward accordingly. When the rack 131 moves down to mesh with the pinion 134 rotatably installed on the inner wall of the limiting block 132, the rack 131 drives the pinion 134 to rotate. The small gear 134 meshes with the outer surface of the large gear 136, causing the large gear 136 to rotate synchronously. The large gear 136 drives the rack 138 meshing on its right side to slide vertically downward along the inner wall of the limiting block 137. The limiting plate 139 at the bottom of the rack 138 contacts the upper surface of the fish fillet before the tip of the slicing knife 12, applying vertical pressure to the fish fillet and preventing the horizontal component of the blade's inclined surface from pushing the fish fillet backward. The rack 141, which is fixedly mounted on the front of the receiving frame 11, moves downward accordingly. However, at this time, the one-way clutch 145 is in a slipping state, and the gear 146 does not rotate with the shaft. Rotation 143 keeps the cleaning plate 149 stationary. After the slicing blade 12 completes the cutting, the pusher 10 drives the receiving frame 11 to return vertically upward along the fixed rod 9. The rack 131 moves upward with the receiving frame 11, driving the pinion 134 to rotate in the opposite direction, which in turn drives the large gear 136 to rotate in the opposite direction. The rack 2 138 and the limiting plate 139 return to their original position, releasing the pressure on the fish fillet. The rack 3 141 moves upward with the receiving frame 11, driving the meshing gear ring 144 to rotate. The gear ring 144 drives the rotating shaft 143 to rotate. At this time, the one-way clutch 145 is locked, transmitting power to the gear ring 146. Gear 2 146 drives rack 4 148, which meshes with its lower surface, to slide horizontally along the inner wall of rectangular block 147. Cleaning plate 149, located on the left side of rack 4 148, extends forward, forcibly scraping away the adhered fish fillets from the lower surface of slicing blade 12. The scraped fish fillets fall onto the upper surface of conveyor belt 5 and continue to be conveyed by it. The fish fillets scraped off by cleaning plate 149 fall into the corresponding area separated by partition 7 in collection box 6. After receiving frame 11 completes one up-and-down reciprocating motion, conveyor belt 5 advances by a preset slice thickness, and pusher 10 starts again, repeating the above slicing, pressing, and unloading cycle. The sliced ​​fish fillets are conveyed to collection box 6 by conveyor belt 5, and then enter subsequent processes such as pulp-free treatment, quick-freezing, weighing, metal detection, and vacuum packaging, ultimately completing the preparation of pulp-free quick-frozen diagonally sliced ​​fish fillets.

[0030] In the specific implementation of this equipment, the drive motor 3 is preferably a Delta ECMA-C20807RS servo motor, which is installed on the front of the conveyor table 2. It is supplied by an external 380V industrial AC power supply after being rectified into DC bus voltage by a Delta ASD-B2-0721-B servo driver, and is used to drive the conveyor roller 4 to drive the conveyor belt 5 to achieve step-by-step fixed-distance conveying of the fish fillets; the pusher 10 is preferably an SMC CG5BN25-75 double-acting guide rod cylinder, which converts 0.5-0.7MPa compressed air into a positive pressure air source through the SVR-8 miniature vacuum generator built into the worktable 1, and the air path is controlled by a five-port three-position five-way solenoid valve to realize the vertical downward and upward movement of the receiving frame 11 along the fixed rod 9; the one-way clutch 145 is preferably a Tsubaki The B209 type wedge-type one-way clutch requires no external power supply. It relies entirely on internal wedges to automatically engage and lock when the rotating shaft 143 rotates forward, and the receiving frame 11 moves upward, driving the gear ring 144 to rotate the rotating shaft 143, thus transmitting torque. In reverse, it automatically slips to achieve overtaking. The linkage operation between components follows a purely mechanical and electrical coordination logic. The slicing blade 12 should be made of 440C high-carbon stainless steel or ceramic-coated stainless steel to maintain a sharp edge and prevent fish protein adhesion. The conveyor belt 5 must be a PU food-grade conveyor belt with a surface... Anti-slip textures can be added to prevent the fish fillets from slipping; the limiting plate 139 and cleaning plate 149 are made of ultra-high molecular weight polyethylene or polytetrafluoroethylene, whose low coefficient of friction and self-lubricating properties can avoid damaging the slurry layer on the surface of the fish fillets; the transmission components such as rack 131, rack 2 138, rack 3 141, rack 4 148, pinion 134, gear 136, gear 2 146 and gear ring 144 should be made of 304 or 316L stainless steel and have undergone surface nitriding or hard chrome plating to improve wear resistance and prevent rust in low temperature and humid environments.

[0031] Furthermore, before each use, the slicing blade 12 should be checked for completeness, nicks, or chipping. If dulling is found, it should be replaced or sharpened promptly to avoid crushing or failing to cut the fish fillets due to a dull blade. The air pressure of the pusher 10 should be within a stable range. If the pressure is too low, the slicing blade 12 will not have enough downward force to cut the fish fillets, while if the pressure is too high, it may damage the blade or crack the fish bones. The stepping pulses of the drive motor 3 must be strictly matched with the up and down stroke timing of the pusher 10 to ensure that the conveyor belt 5 only advances one slice thickness after the receiving frame 11 has fully returned to its original position, preventing interference and collision between the blade and the conveyor belt 5. The one-way clutch 145 needs to be regularly lubricated with low-temperature grease to avoid locking or excessive slippage due to lubrication failure in low-temperature environments. The rack 131 and pinion 134, the large gear 136 and rack 2 138, and the rack The meshing clearance between gear 141 and gear ring 144, and between gear 2 146 and rack 4 148 should be controlled. Excessive clearance will cause the limit plate 139 or cleaning plate 149 to lag or have a disordered timing. Insufficient clearance will increase transmission resistance or even cause jamming. After the end of each day's production, the slicing blade 12, limit plate 139, cleaning plate 149, conveyor belt 5 and collection box 6 must be thoroughly cleaned and disinfected to prevent bacteria from growing after the fish fillet residue and slurry have dried. The fit between the cleaning plate 149 and the lower surface of the slicing blade 12 should be checked. If there is a gap, the connection position between rack 4 148 and cleaning plate 149 should be adjusted. The overrunning direction of the one-way clutch 145 should be checked regularly to ensure that it matches the movement direction of the receiving frame 11. If the installation direction is incorrect, the cleaning plate 149 will not be able to extend during the return stroke, and the blade will be damaged due to accidental starting during the downward stroke.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing equipment for quick-frozen fish fillets without battering, characterized in that: The system includes a workbench (1), a conveyor (2) fixedly installed on the right side of the upper surface of the workbench (1), a U-shaped frame (8) fixedly installed on the upper surface of the conveyor (2), a fixing rod (9) fixedly installed inside both sides of the U-shaped frame (8), a pusher (10) installed at the top of the U-shaped frame (8), a receiving frame (11) installed at one end of the output shaft of the pusher (10), a slicing blade (12) installed on the lower surface of the receiving frame (11), and the inner walls on both sides of the receiving frame (11) are slidably connected to the outer surface of the fixing rod (9). A downward pressure limiting component (13) is installed on the right side of the receiving frame (11), and an upward cleaning component (14) is installed on the front of the receiving frame (11). The power input ends of the downward pressure limiting component (13) and the upward cleaning component (14) are both operated and opened by the downward force of the receiving frame (11).

2. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 1, characterized in that: The downward pressure limiting assembly (13) includes a rack (131), a limiting block (132), a rotating rod (133), a pinion (134), a rotating rod (135), and a large gear (136). The left side of the rack (131) is fixedly installed with the right side of the support frame (11). The left side of the limiting block (132) is fixedly installed with the right side of the U-shaped frame (8). The outer surface of the rotating rod (133) is rotatably connected to the inner wall of the limiting block (132). The inside of the pinion (134) is fixedly installed with the outer surface of the rotating rod (133). The outer surface of the rotating rod (135) is rotatably installed with the inner wall of the limiting block (132). The inside of the large gear (136) is fixedly installed with the outer surface of the rotating rod (135).

3. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 1, characterized in that: The upward cleaning assembly (14) includes a rack three (141), a limiting block three (142), a rotating shaft (143), a gear ring one (144), a one-way clutch (145), and a gear two (146). The left side of the rack three (141) is fixedly installed with the right side of the receiving frame (11). The left side of the limiting block three (142) is fixedly installed with the front of the U-shaped frame (8). The outer surface of the rotating shaft (143) is rotatably installed with the inner wall of the limiting block three (142). The inside of the gear ring one (144) is fixedly installed with the outer surface of the rotating shaft (143). The inside of the one-way clutch (145) is installed with the outer surface of the rotating shaft (143). The inner ring of the gear two (146) is installed with the outer surface of the one-way clutch (145).

4. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 2, characterized in that: The outer surface of the pinion (134) meshes with the right side of the lowered rack (131), and the outer surface of the pinion (134) meshes with the outer surface of the gear (136).

5. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 2, characterized in that: Limiting block one (132) is fixedly installed on the upper surface of limiting block two (137), and rack two (138) is slidably installed on the inner wall of limiting block two (137).

6. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 5, characterized in that: The left side of the rack two (138) meshes with the outer surface of the large gear (136), and a limit plate (139) is fixedly installed at the bottom of the rack two (138).

7. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 1, characterized in that: A rectangular block (147) is fixedly installed on the upper surface of the workbench (1). A rack four (148) is slidably connected to the inner wall of the rectangular block (147). The upper surface of the rack four (148) meshes with the outer surface of the gear two (146). A cleaning plate (149) is installed on the left side of the rack four (148).

8. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 1, characterized in that: A drive motor (3) is installed on the front of the conveyor (2), and a transmission roller (4) is fixedly installed on the output shaft of the drive motor (3). A conveyor belt (5) is installed on the outer surface of the transmission roller (4).

9. The production and processing equipment for quick-frozen fish fillets without slurry according to claim 1, characterized in that: A collection box (6) is fixedly installed on the left side of the upper surface of the workbench (1). A partition (7) is installed inside the collection box (6), and the partition (7) is used to distinguish between normal conveying and feeding and scraping conveying.

10. A method for producing quick-frozen fish fillets without battering, characterized in that, The specific steps include the following: S1. After bleeding, scaling, gutting, and deboning the live fish, boneless fish fillets are obtained. The fillets are then moderately thawed or kept semi-frozen in a low-temperature environment to ensure their hardness. The pre-treated fish fillets are placed on the upper surface of the conveyor belt (5) of the conveyor table (2). The drive motor (3) is started, and the output shaft of the drive motor (3) drives the transmission roller (4) to rotate. The transmission roller (4) drives the conveyor belt (5) to transport the fish fillets to the right. S2. When the fish fillet is conveyed by the conveyor belt (5) to the area below the U-shaped frame (8), the pusher (10) is activated. The output shaft of the pusher (10) drives the receiving frame (11) to slide vertically downward along the outer surface of the fixed rod (9). The slicing blade (12) on the lower surface of the receiving frame (11) at a fixed angle to the vertical direction cuts into the fish fillet at an oblique angle. At the same time, the rack one (131) on the right side of the receiving frame (11) moves downward, and the rack one (131) drives the limiting block one. The small gear (134) inside (132) rotates, and the small gear (134) drives the large gear (136) to rotate synchronously. The large gear (136) drives the rack two (138) to slide vertically downward along the inner wall of the limiting block two (137), so that the limiting plate (139) at the bottom of the rack two (138) contacts the upper surface of the fish fillet before the tip of the slicing knife (12) and applies vertical pressure, preventing the horizontal component of the blade's inclined surface from pushing the fish fillet backward, and ensuring that the slice thickness is uniform. S3. After the slicing blade (12) completes the cutting, the pusher (10) drives the receiving frame (11) to return vertically upward along the fixed rod (9). The rack one (131) moves upward and drives the pinion (134) to rotate in the opposite direction, so that the limiting plate (139) returns to its original position and releases the clamping. At the same time, the rack three (141) on the front of the receiving frame (11) moves upward. The rack three (141) drives the gear ring one (144) in the limiting block three (142) to rotate. One (144) drives the rotating shaft (143) to rotate. The rotating shaft (143) transmits power to the second gear (146) through the locked one-way clutch (145). The second gear (146) drives the fourth rack (148) to slide horizontally along the inner wall of the rectangular block (147), so that the cleaning plate (149) on the left side of the fourth rack (148) extends forward close to the lower surface of the slicing knife (12), forcibly scraping the adhered fish slices off to the upper surface of the conveyor belt (5). S4. The fish fillets that have been shoveled off continue to be transported by the conveyor belt (5). The fish fillets that fall normally and the fish fillets shoveled off by the cleaning plate (149) fall into different areas separated by partitions (7) in the collection box (6) on the upper surface of the workbench (1). The collected fish fillets are then subjected to short-term negative pressure permeation treatment without slurry at low temperature with auxiliary materials such as composite water-retaining agent, starch, and seasoning liquid. Finally, the fish fillets are quickly frozen by a single-freezing machine and weighed, metal detected and vacuum packaged to complete the preparation of the finished product of quick-frozen obliquely cut fish fillets without slurry.

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