A fish primary processing all-in-one machine

Abstract

This invention relates to the field of fish processing technology, and in particular to an integrated primary fish processing machine, comprising a frame and a fixed frame fixedly installed on top of the frame, and further comprising: a feeding frame, fixedly installed on top of the frame and located on one side of the fixed frame; two sets of drive wheels, axially symmetrically mounted at both ends of the frame, with two on each side; and a drive motor, axially symmetrically mounted on one side of the fixed frame, located above the drive wheels. The integrated primary fish processing machine provided by this invention can adapt to fish of different sizes through a positioning component, aligning the fish to the cutting centerline throughout the process without manual adjustment, ensuring precise positioning, preventing deviation during venting, and avoiding gallbladder rupture, thus significantly improving the finished product qualification rate.

Description

Technical Field

[0001] This invention relates to the field of fish processing technology, and in particular to an integrated machine for primary fish processing. Background Technology

[0002] Currently, in the large-scale primary processing of freshwater fish, gutting and cutting is the core process that determines the product qualification rate and processing quality. The industry generally adopts a processing mode in which the fish body moves and the cutter is fixed. That is, the fish body passes over the cutter under the drive of the conveyor mechanism, and the cutter completes the gutting operation along the longitudinal direction of the fish belly. In order to ensure that the cutting trajectory coincides with the central axis of the fish belly and avoid problems such as off-center cutting, oblique cutting, puncturing the gallbladder, and damaging the belly, the fish body must be stably and accurately kept on the center line of the gutting when passing the cutter.

[0003] In traditional fish gutting equipment and processing methods, due to significant differences in fish species, growth cycles, and individual fatness, the width, thickness, and shape of the fish are not uniform. The equipment does not have an automatic centering correction function for fish of different sizes. The width of the conveying channel is fixed or can only be manually adjusted. It cannot automatically guide and correct the fish to the cutting center line position during the conveying process. When the fish enters the cutting area, it is very easy to deviate from the center due to its own placement deviation, conveying offset, body shape differences, etc., resulting in inaccurate cutting position.

[0004] To address this issue, traditional methods rely on operators manually aligning, pressing, and adjusting the fish's posture throughout the entire process to force it to remain centered before cutting. This manual positioning method has several insurmountable drawbacks in actual production, such as: unstable positioning accuracy and poor cutting consistency: manual centering is greatly affected by operator experience, attention, and fatigue, making fish deviation unavoidable. This can easily lead to cuttings deviating from the centerline, crooked cuts, uneven depths, and in severe cases, directly rupturing the gallbladder, causing fish meat contamination, product spoilage, low yield, and uncontrollable quality; high labor intensity and labor costs: operators need to continuously perform actions such as supporting the fish, centering, and feeding, which are highly repetitive and physically demanding. Prolonged work can easily lead to fatigue, further exacerbating positioning errors and safety risks; low processing efficiency and inability to operate continuously: manual centering limits the conveying speed and cycle time, preventing the equipment from operating at high speed continuously, resulting in low overall processing efficiency and making it difficult to meet the needs of large-scale aquatic product processing and assembly line production. In summary, traditional fish gutting equipment cannot automatically center and position fish of different sizes, requiring manual assistance for centering. This results in low cutting accuracy, low efficiency, low yield, and poor hygiene, which has become a prominent technical problem restricting the upgrading of fish primary processing towards automation, standardization, and large-scale production. Summary of the Invention

[0005] Therefore, it is necessary to provide an integrated fish primary processing machine that can perform centered gutting of fish of different sizes to address the aforementioned technical problems.

[0006] The present invention provides an integrated machine for primary processing of fish, comprising a frame and a fixed bracket fixedly installed on the top of the frame, and further comprising: The feed frame is fixedly installed on the top of the frame, located on one side of the fixed frame; The drive wheels are configured in two sets, axially symmetrically mounted at both ends of the frame, with two on each side. The drive motor is axially symmetrically mounted on one side of the fixed frame, located above the drive wheel; A rotating shaft has one end fixed through the drive wheel, and the other end of the rotating shaft is connected to the output end of the drive motor at two locations near one end of the feed frame. The conveyor belt is driven between two drive pulleys on the same side. The saw blade is rotatably mounted on the frame, with a portion located between the two conveyor belts; Gears are fixed to the outside of the rotating shaft, and gears on the same side are connected by chain drive. A positioning component, mounted on the frame and located on both sides of the saw blade, is used to position the fish.

[0007] In one embodiment, the positioning component includes driven wheels, configured in two sets, axially symmetrically arranged on both sides of the saw blade, with multiple wheels in each set arranged in a horizontal linear arrangement. The driven wheels are connected to the conveyor belt for transmission. A vertical rod is fixedly provided through each driven wheel. The frame has multiple movable grooves axially symmetrically opened on both sides of the saw blade. The bottom of the vertical rod is slidably connected to the movable groove, and a movable piece is fixedly provided at its end. The top of the movable piece is slidably attached to the surface of the movable groove.

[0008] In one embodiment, a positioning block is fixedly provided at the top of the vertical rod, and the positioning blocks on two adjacent opposite sides are fixedly connected by a positioning spring.

[0009] In one embodiment, a groove is provided in the middle of the frame, the groove is located on one side of the drive wheel, and a cleaning brush is rotatably mounted on the frame below the groove. The cleaning brush is rotatably arranged with the groove, and a portion of it extends beyond the surface of the groove.

[0010] In one embodiment, a placement rack is fixedly mounted on one side of the groove, and the placement rack is triangular in shape.

[0011] In one embodiment, a positioning frame is fixedly installed on the top of the frame, the positioning frame is located above the groove, and a pressure plate is movably arranged at the bottom of the positioning frame, the pressure plate pressing and limiting the fish.

[0012] In one embodiment, the top of the pressure plate is fixedly connected to the positioning frame by a return spring.

[0013] In one embodiment, the frame is axially symmetrically fixed with mounting brackets on both sides of the end of the groove away from the drive wheel, and the number is set to two sets. A rotating rod is rotatably installed between the two opposing mounting brackets. A rotating column is fixedly installed through both sides of the rotating rod. An elastic descaling roller is fixedly installed between the rotating columns in a spiral shape.

[0014] In one embodiment, the surface of the elastic descaling roller has multiple notches.

[0015] In one embodiment, three support frames are fixedly installed on both sides of the mounting frame, and rollers are rotatably installed between the two opposing support frames. The aforementioned integrated fish primary processing machine, through its positioning components, can adapt to fish of different sizes, aligning the fish to the cutting center line throughout the process without manual adjustment. This ensures precise positioning, prevents deviation during evisceration, and avoids gallbladder damage, significantly improving the finished product qualification rate. The pressure plate adaptively presses the fish to prevent tilting, and the cleaning brush thoroughly cleans the internal organs and black membrane, resulting in clean evisceration without damaging the abdominal cavity wall, enhancing hygiene and safety. The rollers and elastic descaling rollers have appropriately matched speeds; the rollers provide low-speed feeding, while the descaling rollers remove scales at high speed, allowing the fish to move smoothly along the frame, ensuring thorough descaling without leaving any blind spots, while simultaneously preventing damage to the fish skin and avoiding jamming. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged diagram of part A in the middle; Figure 3 This is a schematic diagram of the bottom structure of the frame in this invention; Figure 4 for Figure 3 Enlarged diagram of section B; Figure 5 This is a schematic diagram of the saw blade structure in this invention; Figure 6 for Figure 5 Enlarged diagram of section C; Figure 7 This is a schematic diagram of the rotating rod in this invention; Figure 8 This is a schematic diagram of the notch structure in this invention.

[0018] Reference numerals: 1. Frame; 101. Groove; 2. Fixed frame; 3. Feed frame; 4. Drive wheel; 5. Drive motor; 6. Rotating shaft; 7. Conveyor belt; 8. Saw blade; 9. Positioning assembly; 91. Driven wheel; 92. Vertical rod; 93. Movable groove; 94. Movable piece; 95. Positioning block; 96. Positioning spring; 10. Gear; 11. Cleaning brush; 12. Placement frame; 13. Positioning frame; 14. Pressure plate; 15. Return spring; 16. Mounting frame; 17. Rotating rod; 18. Rotating column; 19. Elastic descaling roller; 191. Notch; 20. Support frame; 21. Roller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0024] The following is combined Figures 1-8 This invention describes an integrated machine for primary processing of fish.

[0025] like Figures 1-4 As shown in the figure, this embodiment provides an integrated fish primary processing machine that can realize the integrated continuous operation of automatic centering positioning of fish, precise gutting, efficient cleaning, flexible descaling and stable discharge. It can be adapted to the processing of fish of different sizes and effectively solves the problems of inaccurate positioning, skewed gutting, incomplete descaling, easy damage to fish, and reliance on manual assistance of traditional equipment, thus greatly improving processing efficiency and finished product quality.

[0026] The integrated machine includes a frame 1 and a fixed bracket 2 fixedly mounted on top of the frame 1. The frame 1 provides stable support for the entire equipment, ensuring that the various mechanisms do not shake or shift during operation and maintaining processing accuracy. The fixed bracket 2 provides a reliable mounting base for the drive components, making power transmission more stable and ensuring long-term continuous operation of the equipment. A feed frame 3 is fixedly mounted on the top of the frame 1. The feed frame 3 is located on one side of the fixed bracket 2, forming a regular guide feed channel that can smoothly guide the fish into the processing area, avoiding jamming, tilting, or tipping of the fish upon entry, and providing a good initial posture for subsequent positioning and cutting.

[0027] See Figures 1-5As shown, two sets of axially symmetrical drive wheels 4 are rotatably mounted at both ends of the frame 1. There are two drive wheels 4 on each side. A conveyor belt 7 is installed between the two drive wheels 4 on the same side. The fish is symmetrically clamped and conveyed by the double-sided conveyor belts 7, so that the fish maintains a stable posture during the conveying process, without slipping, deviating, or twisting. A drive motor 5 is axially symmetrically mounted on one side of the fixed frame 2. The drive motor 5 is located above the drive wheels 4. Two rotating shafts 6 near the end of the feed frame 3 are fixed through the drive wheels 4 at one end and connected to the output end of the drive motor 5 at the other end. Gears 10 are fixed on the outside of the rotating shafts 6. The gears 10 on the same side are connected by a chain drive. The power output by the drive motor 5 is transmitted to the drive wheels 4 through the rotating shafts 6, and the double-sided conveyor belts 7 are synchronized through the gears 10 and the chain, ensuring that the conveying speed on both sides is completely consistent, avoiding the fish from deflecting due to speed difference, and ensuring that the cutting trajectory is straight, uniform, and centered.

[0028] See Figure 3 and Figure 5 As shown, a saw blade 8 is rotatably mounted on the frame 1. Part of the saw blade 8 is located between two conveyor belts 7. When the fish is stably conveyed to the position of the saw blade 8, the saw blade 8 precisely cuts along the central axis of the fish's belly. The cut depth is consistent and the position is centered, which can effectively avoid uneven cutting, slanted cutting, uneven depth, and rupture of the fish gallbladder, significantly improving the qualification rate of gutting and the quality of the product.

[0029] See Figures 1-4 As shown, the frame 1 is equipped with a positioning component 9, which is located on both sides of the saw blade 8. This component is used for automatic centering of fish of different sizes. The positioning component 9 includes two sets of driven wheels 91 axially symmetrically arranged on both sides of the saw blade 8. Each set of driven wheels 91 consists of multiple wheels arranged in a horizontal linear arrangement. The driven wheels 91 are connected to the conveyor belt 7 and can rotate synchronously with the conveyor belt 7, reducing frictional damage to the fish surface and maintaining a consistent conveying rhythm. A vertical rod 92 is fixedly installed through each driven wheel 91. Multiple movable grooves 93 are axially symmetrically opened on both sides of the saw blade 8 on the frame 1. The bottom of the vertical rod 92 is slidably connected to the movable groove 93, and the end... A movable plate 94 is fixedly installed at the end, and the top of the movable plate 94 slides and fits against the surface of the movable groove 93, so that the driven wheel 91 and the vertical rod 92 can move laterally adaptively along the movable groove 93. It can automatically adjust the distance between the two sides according to the width of the fish and adapt to fish of different sizes without manual adjustment. A positioning block 95 is fixedly installed at the top of the vertical rod 92. The positioning blocks 95 on two adjacent opposing sides are fixedly connected by a positioning spring 96. The positioning spring 96 continuously provides opposing elastic tightening force to automatically correct and align the fish to the center line, realize dynamic centering positioning throughout the process, and ensure that each fish passes through the saw blade 8 in the best posture, which greatly improves the cutting accuracy and processing consistency.

[0030] See Figure 1 , Figure 3 and Figures 5-6As shown, a groove 101 is provided in the middle of the frame 1, located on one side of the drive wheel 4. A cleaning brush 11 is rotatably mounted on the frame 1 below the groove 101. The cleaning brush 11 rotates and engages with the groove 101, with a portion extending beyond the surface of the groove 101. After the fish is gutted, it enters the groove 101 area. The cleaning brush 11 extends into the fish's abdomen at a suitable rotation speed to thoroughly clean the internal organs, black membrane, and blood in the abdominal cavity. This cleaning is thorough and does not scratch the inner wall of the abdominal cavity, effectively improving the product's hygiene level and food safety. A placement rack 12 is fixedly installed on one side of the groove 101 on the frame 1. The placement rack 12 is triangular in shape and provides stable transition support for the gutted fish, preventing it from sagging, bending, or scraping, thus maintaining the integrity of the fish's shape. This allows the fish to smoothly enter the next process. A positioning frame 13 is fixedly installed on the top of the frame 1. The positioning frame 13 is located above the groove 101. A pressure plate 14 is movably installed at the bottom of the positioning frame 13. The top of the pressure plate 14 is fixedly connected to the positioning frame 13 by a return spring 15. When the fish is placed on the placement rack 12, the pressure plate 14 is pulled down. This process stretches the return spring 15, causing the pressure plate 14 to fit against the back of the fish and press the fish stably on the conveying path. This prevents the fish from lifting or jumping during the cleaning process and ensures that the cleaning brush 11 can stably penetrate into the abdominal cavity to complete the cleaning, thereby improving the cleaning effect and operational stability. After cleaning is completed, the downward force applied to the pressure plate 14 is removed. Under the action of the return spring 15, the pressure plate 14 will be pulled upward to the initial position.

[0031] See Figure 1 , Figure 5 and Figures 7-8 As shown, after gutting, the fish is conveyed smoothly forward with its belly against the surface of the frame 1 and its back naturally extended, passing through multiple rollers 21 and the bottom of two elastic descaling rollers 19. Maintaining the fish's belly against the frame 1 prevents it from tilting, flipping, or shifting during descaling and discharge, ensuring that subsequent descaling operations are applied stably to the back and sides of the fish, guaranteeing even and thorough descaling. Two sets of mounting brackets 16 are axially symmetrically fixed on both sides of the groove 101 away from the drive wheel 4. A rotating rod 17 is rotatably mounted between the upright mounting brackets 16. Rotating columns 18 are fixedly installed through both sides of the rotating rod 17. An elastic descaling roller 19 is fixedly installed between the rotating columns 18. The elastic descaling roller 19 is spirally arranged. The elastic descaling roller 19 rotates synchronously with the rotating rod 17. The spiral structure can form a continuous and gradual scraping action along the length of the fish body. During the rotation, it continuously conforms to the curved surface of the fish back, so that the fish scales are subjected to a uniform and gentle peeling force, realizing continuous descaling throughout the process without leaving any dead corners or areas where scales are missed.

[0032] The surface of the elastic descaling roller 19 has multiple notches 191, each formed by an alternating arrangement of a nut and a washer. The nut and washer are alternately fitted together, creating a continuous, equidistant gap on the roller surface. During rotation, this provides a stable hooking and peeling action on the fish scales, reaching deep into the root of the scales for thorough and complete descaling without any blind spots. This avoids slippage on the smooth roller surface, preventing incomplete descaling. Furthermore, the alternating structure of the notches 191 provides an immediate discharge channel for the fish scales, allowing them to quickly detach and be thrown out without accumulating or tangling. The scales will not be trapped in the roller gaps on the roller surface, keeping the roller surface clean and eliminating the need for frequent machine shutdowns for cleaning. Secondly, the gaskets provide a buffer interval, preventing the nut from directly contacting the fish body. Instead, the scales are peeled off by point contact and light pressure, resulting in uniform and gentle contact pressure. This significantly reduces the risk of scratching or abrasion to the fish skin, ensuring the finished fish has an intact skin and excellent appearance. Finally, in conjunction with the spiral elastic descaling roller 19, the staggered notches 191 can form a continuous pushing descaling process, peeling off the scales while pushing the fish body forward, resulting in higher descaling efficiency and smoother operation.

[0033] Three sets of support frames 20 are fixedly installed on both sides of the mounting frame 1. Rollers 21 are rotatably installed between the two opposing support frames 20. When the fish passes through the bottom of the multiple rollers 21, the rollers 21 support the fish in a close-fitting manner, so that the fish can move smoothly on the surface of the frame 1. This ensures that the fish can stably pass under the elastic descaling roller 19, and also helps the fish to move out smoothly after descaling, avoiding dry friction between the fish and the frame 1, which could cause jamming, dragging or skin abrasion.

[0034] The rotational speed of roller 21 is set lower than that of elastic descaling roller 19. The speed difference creates a reasonable matching between conveying traction and descaling rhythm: elastic descaling roller 19 completes the scraping action efficiently at a higher speed, while roller 21 stably carries the fish at a lower speed, so that the fish movement speed and descaling speed are coordinated and consistent. This prevents incomplete descaling due to excessively fast conveying and repeated scraping damage to the fish skin due to excessively slow conveying. The overall processing is more stable and the yield is higher, achieving a continuous and smooth connection between descaling and discharge.

[0035] This equipment features a compact overall structure and stable operation. From feeding, automatic centering and positioning, precise gutting, cleaning, flexible descaling to stable discharge, the entire process is completed automatically and continuously. It can be adapted to the processing of fish of different sizes and has the advantages of precise positioning, neat gutting, clean cleaning, thorough descaling, stable discharge, and no damage to the fish. It significantly improves processing efficiency and finished product quality and is suitable for large-scale continuous production in aquatic product processing scenarios.

[0036] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A fish primary processing integrated machine, comprising a frame and a fixed bracket fixedly installed on the top of the frame, characterized in that, Also includes: The feed frame is fixedly installed on the top of the frame, located on one side of the fixed frame; The drive wheels are configured in two sets, axially symmetrically mounted at both ends of the frame, with two on each side. The drive motor is axially symmetrically mounted on one side of the fixed frame, located above the drive wheel; A rotating shaft has one end fixed through the drive wheel, and the other end of the rotating shaft is connected to the output end of the drive motor at two locations near one end of the feed frame. The conveyor belt is driven between two drive wheels on the same side. The saw blade is rotatably mounted on the frame, with a portion located between the two conveyor belts; Gears are fixed to the outside of the rotating shaft, and gears on the same side are connected by chain drive. A positioning component, mounted on the frame and located on both sides of the saw blade, is used to position the fish.

2. The integrated fish primary processing machine according to claim 1, characterized in that, The positioning component includes driven wheels, configured in two sets, axially symmetrically arranged on both sides of the saw blade, with multiple wheels in each set arranged in a horizontal linear arrangement. The driven wheels are connected to the conveyor belt for transmission. A vertical rod is fixedly installed through each driven wheel. The frame has multiple movable grooves axially symmetrically opened on both sides of the saw blade. The bottom of the vertical rod is slidably connected to the movable groove, and a movable piece is fixedly installed at its end. The top of the movable piece is slidably attached to the surface of the movable groove.

3. The integrated fish primary processing machine according to claim 2, characterized in that, A positioning block is fixedly installed at the top of the vertical rod, and the positioning blocks on two adjacent opposite sides are fixedly connected by a positioning spring.

4. The integrated fish primary processing machine according to claim 1, characterized in that, A groove is provided in the middle of the frame, the groove is located on one side of the drive wheel, and a cleaning brush is rotatably installed on the frame below the groove. The cleaning brush is rotatably arranged with the groove, and a part of it extends beyond the surface of the groove.

5. The integrated fish primary processing machine according to claim 4, characterized in that, A placement rack is fixedly installed on one side of the groove on the frame, and the placement rack is triangular in shape.

6. The integrated fish primary processing machine according to claim 5, characterized in that, A positioning frame is fixedly installed on the top of the frame, the positioning frame is located above the groove, and a pressure plate is movably arranged at the bottom of the positioning frame, the pressure plate presses and limits the fish.

7. The integrated fish primary processing machine according to claim 6, characterized in that, The top of the pressure plate is fixedly connected to the positioning frame by a return spring.

8. The integrated fish primary processing machine according to claim 4, characterized in that, The frame is axially symmetrically fixed with mounting brackets on both sides of the end of the groove away from the drive wheel. The number of brackets is set to two sets. A rotating rod is rotatably installed between the two opposing mounting brackets. A rotating column is fixedly installed through both sides of the rotating rod. An elastic descaling roller is fixedly installed between the rotating columns in a spiral shape.

9. The integrated fish primary processing machine according to claim 8, characterized in that, The surface of the elastic descaling roller has multiple notches.

10. A fish primary processing integrated machine according to claim 8, characterized in that, The frame is fixedly mounted with support frames on both sides of the mounting bracket, and the number of support frames is set to three. Rollers are rotatably mounted between the support frames on the two opposite sides.

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