Fish product processing production line

Abstract

The invention discloses a fish product processing production line which mainly comprises a fish scale removing mechanism, a back opening mechanism, a head cutting machine table and two operation tables, and the head cutting machine table is located between the fish scale removing mechanism and the back opening mechanism. The fish body embedding device has the advantages that the first motor drives the driving rod to rotate through the belt pulley, the positioning roller rotates along with the driving rod, and a fish body is embedded into the positioning groove. At the moment, the first conveying belt pushes the fish bodies to be conveyed forwards through the baffles, the rotating speed of the positioning rollers is synchronous with that of the first conveying belt, and the fish bodies are axially fixed while conveying continuity is kept. And meanwhile, the electric push rod pushes the adjusting plate to move downwards, the spring is compressed to enable the positioning pressing plate to elastically press the fish head, and a double-fixing mechanism of rotating positioning and elastic pressing is formed. According to the design, the problem of notch deviation caused by fish body sliding in a traditional head cutting procedure is effectively solved, the device is particularly suitable for accurate positioning of fish bodies of different specifications, and the head cutting position error of the cutting disc is controlled to be at the millimeter level.

Description

Technical Field

[0001] The present invention relates to the technical field of fish product processing, and particularly to a fish product processing production line. Background Art

[0002] A fish product processing production line is a comprehensive production system specifically used for the fully automated or semi-automated production of fish products from raw material processing to finished product packaging. Its core function is to transform fresh or frozen fish raw materials into various high-value-added fish foods or semi-finished products, such as fish fillets, fish steaks, fish balls, fish cans, etc., to meet the needs of different consumers. This production line integrates multiple key links such as cleaning, scaling, gutting, cutting, seasoning, and packaging. Each link is equipped with specialized mechanical equipment and process control, aiming to improve production efficiency, ensure product quality stability and safety, reduce labor costs at the same time, and achieve large-scale and standardized production. The wide application of fish product processing production lines not only promotes the upgrading of the fishery industry but also injects new vitality into the development of the food industry, becoming an indispensable and important part of the modern food processing field.

[0003] In a fish product processing production line, as a key process equipment, the beheader's main function is to remove the heads of scaled fish bodies for subsequent processing. However, there is a common technical problem in current beheaders on the market: although the fixation of the fish body in the up and down directions is achieved through the pressing plate design, it is ineffective in positioning the fish body in the left and right directions. This defect causes the fish body to easily deviate from the predetermined position during transportation due to the slight vibration of the conveyor belt or its own sliding, which in turn affects the accuracy of head cutting, increases the defective rate, and reduces production efficiency. Therefore, how to improve the positioning mechanism of the beheader and enhance the stability of the fish body during transportation has become an urgent problem to be solved in the current technical upgrade of fish product processing production lines. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a fish product processing production line, which has advantages such as high precision and solves the problem of high defective rate.

[0006] (II) Technical Solutions

[0007] To achieve the above high-precision purpose, the present invention provides the following technical solutions: It includes a fish-scale removing mechanism, a back-opening mechanism, a head-cutting machine table, and two operating tables. The head-cutting machine table is located between the fish-scale removing mechanism and the back-opening mechanism. A frame and an L-shaped bracket are respectively fixedly installed on the front and rear sides of the head-cutting machine table through bolts. An embedding groove is formed on the top surface of the head-cutting machine table. A driving roller, a first driven roller, and a second driven roller are rotatably connected inside the embedding groove through bearings. A first conveyor belt is arranged between the driving roller and the first driven roller, and a second conveyor belt is arranged between the driving roller and the second driven roller. A number of linearly arrayed baffles are fixedly connected to the outer surface of the first conveyor belt. A hydraulic cylinder is fixedly connected inside the frame. The output end of the hydraulic cylinder is fixedly connected with a lifting table. A bearing sleeve is fixedly installed on the top of the lifting table through a clamp. A driving rod is rotatably connected inside the bearing sleeve. A positioning roller is fixedly connected to one end of the driving rod close to the L-shaped bracket. A number of positioning grooves adapted to the fish body are formed on the outer surface of the positioning roller. A first motor is fixedly connected to one side of the lifting table. Pulley wheels are fixedly connected to the output end of the first motor and one end of the driving rod respectively. The two pulley wheels are connected by a belt. A second motor is fixedly connected to one side of the L-shaped bracket. A cutting disc is fixedly connected to the output end of the second motor. The bottom of the cutting disc is located between the first conveyor belt and the second conveyor belt.

[0008] Preferably, an electric push rod is fixedly connected to the top of the L-shaped bracket. The output end of the electric push rod is fixedly connected with an adjusting plate. Two symmetrically arranged springs are fixedly connected to the top of the adjusting plate. The top end of each spring is fixedly connected with a connecting rod. Both connecting rods are slidably connected to the adjusting plate. The bottom ends of the two connecting rods are fixedly connected with a positioning pressing plate. The positioning pressing plate and the positioning roller are located above the first conveyor belt.

[0009] Preferably, two symmetrically arranged limiting rods are fixedly connected to the top surface of the adjusting plate. Both limiting rods are slidably connected to the L-shaped bracket.

[0010] Preferably, spray cleaning mechanisms are arranged at the output ends of the fish-scale removing mechanism and the first conveyor belt respectively. The output ends of the two spray cleaning mechanisms are respectively spliced with the two operating tables.

[0011] Preferably, a fish head discharge port is formed on the front of the head-cutting machine table. A collection box is fixedly connected inside the embedding groove. The output end of the collection box is communicated with the input end of the fish head discharge port. The input end of the collection box corresponds to the output end of the second conveyor belt.

[0012] Preferably, a protective frame is fixedly connected inside the embedding groove. The cutting disc is located inside the protective frame. Both the first conveyor belt and the second conveyor belt are slidably connected to the protective frame. A bearing plate is fixedly connected between the protective frame and the cutting head machine table. The top surface of the bearing plate is in contact with the inner wall of the first conveyor belt. The positioning roller corresponds to the bearing plate vertically.

[0013] Preferably, a clamping plate is fixedly connected to the outer surface of the bearing sleeve. The bearing sleeve is clamped to the lifting table through the clamping plate.

[0014] Preferably, two symmetrically arranged guide rods are fixedly connected to the bottom surface of the lifting table. Both of the guide rods are slidably connected to the frame.

[0015] Preferably, the axis of the positioning roller coincides with that of the driving rod. The inside of the positioning roller is of a hollow design. The positioning roller is made of polyethylene.

[0016] Preferably, a third motor is fixedly connected to one side of the cutting head machine table. The output end of the third motor is fixedly connected to the driving roller. Partition rings are fixedly connected to the outer surfaces of the driving roller, the first driven roller and the second driven roller. The first conveyor belt and the second conveyor belt are located on both sides of the partition rings.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a processing production line for fish products, having the following beneficial effects:

[0019] 1. In this processing production line for fish products, the positioning grooves formed on the positioning roller can be accurately matched with the shape of the fish body. After the hydraulic cylinder drives the lifting table to press down so that the positioning roller contacts the fish body, the first motor drives the driving rod to rotate through the belt pulley, and the positioning roller rotates accordingly and embeds the fish body into the positioning groove. At this time, the first conveyor belt pushes the fish body forward through the baffle, and the rotation speed of the positioning roller is synchronized with that of the first conveyor belt, which not only realizes the axial fixation of the fish body but also maintains the continuity of conveying. At the same time, the electric push rod pushes the adjusting plate to move downwards, and the spring compresses to elastically clamp the head part of the fish body by the positioning pressing plate, forming a dual fixing mechanism of "rotary positioning + elastic clamping". This design effectively solves the problem of incision deviation caused by the sliding of the fish body in the traditional cutting head process, especially suitable for the precise positioning of fish bodies of different specifications, and controls the cutting head position error of the cutting disc within millimeters.

[0020] 2. This fish product processing production line uses a hydraulic cylinder to achieve vertical lifting through a lifting platform. The sliding fit between the guide rod and the frame ensures the stability of movement. The initial pressing height of the positioning roller can be adjusted according to the thickness of different fish bodies. The adjusting plate drives the limiting rod to slide up and down in the L-shaped bracket through an electric push rod, and the compression amount of the spring automatically adapts to the height of the fish body. This dual-adjustment system enables the equipment to quickly adapt to various processing objects, from small crucian carp to large grass carp. Only one person is required to complete the height conversion operation, which significantly improves the adjustment efficiency compared with the traditional bolt positioning method and avoids the accuracy error caused by manual measurement.

[0021] 3. This fish product processing production line installs the drive rod on the lifting platform through a bearing sleeve fixed by a clamp. When disassembling, the entire drive assembly can be laterally pulled out by simply loosening the fasteners of the clamping plate. The positioning roller is made of hollow polyethylene, which reduces weight while maintaining structural strength, and can be replaced by a single person. This modular design shortens the maintenance time of the positioning components. When the processed fish species changes, the corresponding specification of the positioning roller can be quickly replaced. Moreover, the polyethylene material has food-grade corrosion resistance and will not cause metal pollution during long-term use, reducing the maintenance cost compared with stainless steel materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of an assembly of a fish product processing production line proposed by the present invention;

[0023] Figure 2 FIG. is a schematic structural diagram of the first perspective of the cutting head machine of a fish product processing production line proposed by the present invention;

[0024] Figure 3 FIG. is a schematic structural diagram of the second perspective of the cutting head machine of a fish product processing production line proposed by the present invention;

[0025] Figure 4 FIG. is a schematic structural diagram of the third perspective of the cutting head machine of a fish product processing production line proposed by the present invention;

[0026] Figure 5 FIG. is a schematic structural diagram of the L-shaped bracket of a fish product processing production line proposed by the present invention;

[0027] Figure 6 FIG. is a schematic structural diagram of the frame of a fish product processing production line proposed by the present invention;

[0028] Figure 7 FIG. is a schematic first exploded structural diagram of the frame of a fish product processing production line proposed by the present invention;

[0029] Figure 8 FIG. is a schematic second exploded structural diagram of the frame of a fish product processing production line proposed by the present invention.

[0030] In the figure: 1 - fish scale removing mechanism, 2 - back opening mechanism, 3 - head cutting machine table, 4 - operating table, 5 - frame, 6 - L-shaped bracket, 7 - embedding groove, 8 - driving roller, 9 - first driven roller, 10 - second driven roller, 11 - first conveyor belt, 12 - second conveyor belt, 13 - baffle, 14 - hydraulic cylinder, 15 - lifting table, 16 - clamp, 17 - bearing sleeve, 18 - driving rod, 19 - collection box, 20 - positioning roller, 21 - positioning groove, 22 - first motor, 23 - pulley, 24 - second motor, 25 - cutting disc, 26 - electric push rod, 27 - adjusting plate, 28 - spring, 29 - connecting rod, 30 - positioning pressing plate, 31 - limiting rod, 32 - spray cleaning mechanism, 33 - fish head discharge port, 34 - protective frame, 35 - bearing plate, 36 - clamping plate, 37 - guide rod, 38 - third motor, 39 - separating ring. Specific implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1-8, a fish product processing production line, which includes a fish scale removing mechanism 1, a back opening mechanism 2, a head cutting machine table 3 and two operating tables 4. The head cutting machine table 3 is located between the fish scale removing mechanism 1 and the back opening mechanism 2. A frame 5 and an L-shaped bracket 6 are respectively fixedly installed on the front and rear sides of the head cutting machine table 3 by bolts. An embedding groove 7 is opened on the top surface of the head cutting machine table 3. A driving roller 8, a first driven roller 9 and a second driven roller 10 are rotatably connected inside the embedding groove 7 through bearings. A first conveyor belt 11 is arranged between the driving roller 8 and the first driven roller 9, and a second conveyor belt 12 is arranged between the driving roller 8 and the second driven roller 10. A plurality of baffles 13 arranged in a linear array are fixedly connected to the outer surface of the first conveyor belt 11. A hydraulic cylinder 14 is fixedly connected inside the frame 5. The output end of the hydraulic cylinder 14 is fixedly connected with a lifting platform 15. A bearing sleeve 17 is fixedly installed on the top of the lifting platform 15 through a clamp 16. A driving rod 18 is rotatably connected inside the bearing sleeve 17. One end of the driving rod 18 close to the L-shaped bracket 6 is fixedly connected with a positioning roller 20. A plurality of positioning grooves 21 adapted to the fish body are opened on the outer surface of the positioning roller 20. One side of the lifting platform 15 is fixedly connected with a first motor 22. The output ends of the first motor 22 and one end of the driving rod 18 are both fixedly connected with pulleys 23. The two pulleys 23 are connected by a belt. One side of the L-shaped bracket 6 is fixedly connected with a second motor 24. The output end of the second motor 24 is fixedly connected with a cutting disc 25. The bottom of the cutting disc 25 is located between the first conveyor belt 11 and the second conveyor belt 12.

[0033] As an alternative technical solution of the present invention: An electric push rod 26 is fixedly connected to the top of the L-shaped bracket 6. The output end of the electric push rod 26 is fixedly connected with an adjusting plate 27. Two symmetrically arranged springs 28 are fixedly connected to the top of the adjusting plate 27. The top end of each spring 28 is fixedly connected with a connecting rod 29. Both connecting rods 29 are slidably connected to the adjusting plate 27. The bottom ends of the two connecting rods 29 are fixedly connected with a positioning pressing plate 30. The positioning pressing plate 30 and the positioning roller 20 are located above the first conveyor belt 11. The electric push rod 26 drives the adjusting plate 27 to lift and lower, and cooperates with the springs 28 and the connecting rods 29 to enable the positioning pressing plate 30 to elastically press the fish body, avoiding rigid clamping from damaging the fish meat. This structure can adapt to fish bodies of different heights, ensure stability during cutting, reduce manual adjustment steps at the same time, and improve processing efficiency.

[0034] As an alternative technical solution of the present invention: Two symmetrically arranged limiting rods 31 are fixedly connected to the top surface of the adjusting plate 27. Both limiting rods 31 are slidably connected to the L-shaped bracket 6. The limiting rods 31 are slidably matched with the L-shaped bracket 6, so that the adjusting plate 27 keeps stable during the lifting process, prevents deviation or shaking, ensures that the positioning pressing plate 30 always presses vertically, improves the positioning accuracy of the fish body, and prolongs the service life of the electric push rod 26 at the same time.

[0035] As an alternative technical solution of the present invention: spray cleaning mechanisms 32 are provided at the output ends of the fish scaling mechanism 1 and the first conveyor belt 11. The output ends of the two spray cleaning mechanisms 32 are respectively spliced with the two operating tables 4. The spray cleaning mechanisms 32 are arranged at the output ends of the fish scaling mechanism 1 and the first conveyor belt 11, and can wash the fish body before entering the next process to remove residual fish scales and blood, keep the processing environment clean, reduce the pollution of the subsequent operating table 4, and improve the hygienic quality of the product.

[0036] As an alternative technical solution of the present invention: a fish head discharge port 33 is opened on the front of the cutting machine table 3. A collection box 19 is fixedly connected inside the embedding groove 7. The output end of the collection box 19 is communicated with the input end of the fish head discharge port 33. The input end of the collection box 19 corresponds to the output end of the second conveyor belt 12. The fish head discharge port 33 is communicated with the collection box 19. The cut fish heads are conveyed to the collection box 19 by the second conveyor belt 12 and automatically discharged, avoiding the accumulation of fish heads affecting the operation of the equipment, facilitating centralized collection and treatment at the same time, reducing the manual cleaning frequency, and improving the production efficiency.

[0037] As an alternative technical solution of the present invention: a protective frame 34 is fixedly connected inside the embedding groove 7. The cutting disc 25 is located inside the protective frame 34. The first conveyor belt 11 and the second conveyor belt 12 are both slidably connected to the protective frame 34. A bearing plate 35 is fixedly connected between the protective frame 34 and the cutting machine table 3. The top surface of the bearing plate 35 is attached to the inner wall of the first conveyor belt 11. The positioning roller 20 corresponds to the bearing plate 35 up and down. The protective frame 34 surrounds the cutting disc 25 to prevent debris from splashing during the cutting process and ensure operation safety; the bearing plate 35 supports the first conveyor belt 11, reduces the sag of the belt, ensures the stable conveyance of the fish body, and cooperates with the positioning roller 20 at the same time to improve the positioning and cutting accuracy of the fish body.

[0038] As an alternative technical solution of the present invention: a clamping plate 36 is fixedly connected to the outer surface of the bearing sleeve 17. The bearing sleeve 17 is clamped with the lifting table 15 through the clamping plate 36. The bearing sleeve 17 is clamped with the lifting table 15 through the clamping plate 36, making the driving rod 18 easy to disassemble and assemble, facilitating maintenance or replacement of the positioning roller 20, reducing the downtime, and ensuring the stable installation of the driving rod 18 at the same time, avoiding loosening during operation and affecting the positioning accuracy.

[0039] As an alternative technical solution of the present invention: two symmetrically arranged guide rods 37 are fixedly connected to the bottom surface of the lifting table 15. Both of the two guide rods 37 are slidably connected to the frame 5. The guide rods 37 are slidably matched with the frame 5, enabling the lifting table 15 to lift smoothly under the drive of the hydraulic cylinder 14, preventing skew or jamming, ensuring uniform contact between the positioning roller 20 and the fish body, improving the positioning stability, and reducing the wear of the hydraulic cylinder 14 at the same time.

[0040] As an alternative technical solution of the present invention: The axis of the positioning roller 20 coincides with the axis of the driving rod 18. The inside of the positioning roller 20 is designed to be hollow. The positioning roller 20 is made of polyethylene. The positioning roller 20 made of hollow polyethylene is light in weight and corrosion-resistant, which is convenient for replacement and cleaning. Its axis coincides with the driving rod 18 to ensure rotational balance, reduce vibration, make the fish body transportation and positioning more stable, and improve the cutting consistency.

[0041] As an alternative technical solution of the present invention: A third motor 38 is fixedly connected to one side of the cutting head machine table 3. The output end of the third motor 38 is fixedly connected to the driving roller 8. Separation rings 39 are fixedly connected to the outer surfaces of the driving roller 8, the first driven roller 9, and the second driven roller 10. The first conveyor belt 11 and the second conveyor belt 12 are located on both sides of the separation ring 39. The third motor 38 drives the driving roller 8 to drive the first conveyor belt 11 and the second conveyor belt 12 to run synchronously. The separation ring 39 ensures that the two belts run independently without interference, so that the fish body and the fish head are conveyed separately, improving the processing efficiency, reducing the belt wear at the same time, and prolonging the service life.

[0042] When the fish product processing production line is in use, it includes the following steps:

[0043] 1); The fish body enters the fish scale removal mechanism 1 to complete the fish scale removal. The scaled fish body is rinsed by the spray cleaning mechanism 32 to remove the remaining fish scales and impurities.

[0044] 2); The fish body enters the cutting head machine table 3 and is pushed forward by the baffle 13 of the first conveyor belt 11. At the same time, the positioning groove 21 of the positioning roller 20 fixes the position of the fish body.

[0045] 3); The electric push rod 26 drives the positioning pressing plate 30 to press down, and cooperates with the spring 28 to elastically clamp the fish head part.

[0046] 4); The second motor 24 drives the cutting disc 25 to rotate, accurately cut off the fish head. The fish head is sent into the collection box 19 by the second conveyor belt 12 and discharged from the fish head discharge port 33.

[0047] 5); The fish body after removing the head is rinsed by another spray cleaning mechanism 32 to ensure cleanliness, and the fish body is conveyed to the back-opening mechanism 2 to complete the back-opening processing and output.

[0048] The electrical components mentioned in this article are all electrically connected to the external main controller and 220V mains power, and the main controller can be a conventional known device such as a computer for control.

[0049] In summary, for the processing production line of a fish product, the positioning grooves 21 formed on the positioning rollers 20 can be precisely matched with the shape of the fish body. After the hydraulic cylinder 14 drives the lifting platform 15 to press down so that the positioning rollers 20 contact the fish body, the first motor 22 drives the driving rod 18 to rotate through the pulley 23, and the positioning rollers 20 rotate accordingly and embed the fish body into the positioning grooves 21. At this time, the first conveyor belt 11 pushes the fish body forward through the baffle 13, and the rotation speed of the positioning rollers 20 is synchronized with that of the first conveyor belt 11, achieving both axial fixation of the fish body and continuous conveying. Meanwhile, the electric push rod 26 pushes the adjusting plate 27 downward, compressing the spring 28 to elastically clamp the head part of the fish, forming a dual fixation mechanism of "rotary positioning + elastic clamping". This design effectively solves the problem of incision deviation caused by the sliding of the fish body during the traditional fish head cutting process, especially suitable for the precise positioning of fish bodies of different specifications, controlling the cutting position error of the cutting disc 25 within the millimeter level. The lifting platform 15 realizes vertical lifting through the hydraulic cylinder 14, and the sliding fit between the guide rod 37 and the frame 5 ensures the movement stability, and the initial pressing height of the positioning rollers 20 can be adjusted according to the thickness of different fish bodies; the adjusting plate 27 drives the limiting rod 31 to slide up and down within the L-shaped bracket 6 through the electric push rod 26, and the compression amount of the spring 28 automatically adapts to the height of the fish body. This dual adjustment system enables the equipment to quickly adapt to various processing objects from small crucian carp to large grass carp. Only one person is required to complete the height conversion operation, which significantly improves the adjustment efficiency compared with the traditional bolt positioning method and avoids the precision error caused by manual measurement. The driving rod 18 is installed on the lifting platform 15 through the bearing sleeve 17 fixed by the clamp 16. When disassembling, only the fasteners of the clamping plate 36 need to be loosened to horizontally extract the entire driving assembly. The positioning rollers 20 are made of hollow polyethylene material, which reduces the weight while maintaining the structural strength, and one person can complete the replacement operation. This modular design shortens the maintenance time of the positioning components. When the processed fish species changes, the corresponding specification of the positioning rollers 20 can be quickly replaced, and the polyethylene material has food-grade corrosion resistance characteristics and will not cause metal pollution during long-term use, reducing the maintenance cost compared with stainless steel materials.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one" does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fish product processing production line, characterized in that, It includes a fish-scale removing mechanism (1), a back-opening mechanism (2), a head-cutting machine table (3) and two operating tables (4). The head-cutting machine table (3) is located between the fish-scale removing mechanism (1) and the back-opening mechanism (2). A frame (5) and an L-shaped bracket (6) are respectively and fixedly installed on the front and rear sides of the head-cutting machine table (3) through bolts. An embedding groove (7) is formed on the top surface of the head-cutting machine table (3). A driving roller (8), a first driven roller (9) and a second driven roller (10) are rotationally connected inside the embedding groove (7) through bearings. A first conveyor belt (11) is arranged between the driving roller (8) and the first driven roller (9), and a second conveyor belt (12) is arranged between the driving roller (8) and the second driven roller (10). A number of baffles (13) arranged in a linear array are fixedly connected to the outer surface of the first conveyor belt (11). A hydraulic cylinder (14) is fixedly connected inside the frame (5). The output end of the hydraulic cylinder (14) is fixedly connected with a lifting platform (15). A bearing sleeve (17) is fixedly installed on the top of the lifting platform (15) through a clamp (16). A driving rod (18) is rotationally connected inside the bearing sleeve (17). A positioning roller (20) is fixedly connected to one end of the driving rod (18) close to the L-shaped bracket (6). A number of positioning grooves (21) adapted to the fish body are formed on the outer surface of the positioning roller (20). A first motor (22) is fixedly connected to one side of the lifting platform (15). Pulley wheels (23) are fixedly connected to the output end of the first motor (22) and one end of the driving rod (18). The two pulley wheels (23) are connected by a belt. A second motor (24) is fixedly connected to one side of the L-shaped bracket (6). A cutting disc (25) is fixedly connected to the output end of the second motor (24). The bottom of the cutting disc (25) is located between the first conveyor belt (11) and the second conveyor belt (12).

2. The processing production line for fish products according to claim 1, characterized in that: An electric push rod (26) is fixedly connected to the top of the L-shaped bracket (6). The output end of the electric push rod (26) is fixedly connected with an adjusting plate (27). Two symmetrically arranged springs (28) are fixedly connected to the top of the adjusting plate (27). A connecting rod (29) is fixedly connected to the top end of each spring (28). The two connecting rods (29) are both slidably connected to the adjusting plate (27). The bottom ends of the two connecting rods (29) are fixedly connected with a positioning pressing plate (30). The positioning pressing plate (30) and the positioning roller (20) are located above the first conveyor belt (11).

3. The processing production line of a fish product according to claim 2, characterized in that: Two symmetrically arranged limiting rods (31) are fixedly connected to the top surface of the adjusting plate (27). The two limiting rods (31) are both slidably connected to the L-shaped bracket (6).

4. A fish product processing production line according to claim 3, characterized in that: Spray cleaning mechanisms (32) are arranged at the output ends of the fish-scale removing mechanism (1) and the first conveyor belt (11). The output ends of the two spray cleaning mechanisms (32) are respectively spliced with the two operating tables (4).

5. A fish product processing production line according to claim 4, characterized in that: A fish head discharge port (33) is formed on the front of the cutting head machine table (3). A collection box (19) is fixedly connected inside the embedding groove (7). The output end of the collection box (19) is communicated with the input end of the fish head discharge port (33). The input end of the collection box (19) corresponds to the output end of the second conveyor belt (12).

6. The processing production line of a fish product according to claim 5, characterized in that: A protective frame (34) is fixedly connected inside the embedding groove (7). The cutting disc (25) is located inside the protective frame (34). Both the first conveyor belt (11) and the second conveyor belt (12) are slidably connected to the protective frame (34). A bearing plate (35) is fixedly connected between the protective frame (34) and the cutting head machine table (3). The top surface of the bearing plate (35) is attached to the inner wall of the first conveyor belt (11). The positioning roller (20) corresponds to the bearing plate (35) vertically and horizontally.

7. A fish product processing production line according to claim 6, characterized in that: A clamping plate (36) is fixedly connected to the outer surface of the bearing sleeve (17). The bearing sleeve (17) is clamped to the lifting table (15) through the clamping plate (36).

8. A fish product processing production line according to claim 7, characterized in that: Two symmetrically arranged guide rods (37) are fixedly connected to the bottom surface of the lifting table (15). Both of the two guide rods (37) are slidably connected to the frame (5).

9. A fish product processing production line according to claim 8, characterized in that: The axis of the positioning roller (20) coincides with the axis of the driving rod (18). The inside of the positioning roller (20) is of a hollow design. The positioning roller (20) is made of polyethylene.

10. A fish product processing production line according to claim 9, characterized in that: A third motor (38) is fixedly connected to one side of the cutting head machine table (3). The output end of the third motor (38) is fixedly connected to the driving roller (8). Partition rings (39) are fixedly connected to the outer surfaces of the driving roller (8), the first driven roller (9) and the second driven roller (10). The first conveyor belt (11) and the second conveyor belt (12) are located on both sides of the partition ring (39).

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