Frozen tuna skin automatic removing device based on profiling knife rest

Abstract

The invention belongs to the technical field of tuna processing, and particularly relates to a frozen tuna fish skin automatic removing device based on a profiling knife rest, which comprises a fixed seat, a fixed rack is arranged on the fixed seat, and a clamp lifting platform for fixedly clamping tuna is arranged on the fixed rack; a profiling processing knife rest used for processing and removing tuna skin is arranged above the clamp lifting platform, the peeling speed and accuracy can be remarkably improved, the influence of human factors on the peeling effect is reduced, and therefore the efficiency and quality of the whole tuna processing process are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tuna processing, and in particular relates to a device for automatically removing the skin of frozen tuna based on a contoured tool holder. Background Art

[0002] At present, in the frozen tuna processing flow, the peeling process mainly relies on manual operation, and manual peeling is mainly completed by pushing and cutting with an arc scraper. The following problems exist in the manual peeling process: 1) The peeling efficiency is low. Tuna is a large fish with a large skin area, and manual peeling takes a long time; 2) The fish meat loss rate is large. Due to the thickness and toughness of tuna skin, manual peeling mainly relies on the experience of workers. The peeling effect often varies due to differences in workers' skill levels. Incomplete peeling and over-peeling are prone to occur, affecting product quality; 3) The labor intensity of workers is high. Due to the thickness and toughness of tuna skin, manual scraping requires multiple reciprocating pushes to complete. Long-term repetitive actions can easily cause fatigue and injury to workers' hands, increasing the risk and discomfort of work. In short, the existing manual peeling technology has low efficiency, uneven product quality, and high labor intensity for workers, which cannot meet the needs of large-scale production. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an automatic skin removal device for frozen tuna based on a profiling tool holder. The frozen tuna is placed on a sway fixture, and the skin of the tuna is automatically removed by a blade on the profiling tool holder, thereby solving the problems of low efficiency, uneven product quality, high labor intensity for workers, and inability to meet the needs of large-scale production of the existing manual skinning technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic removal device for frozen tuna skin based on a profiling tool holder, comprising a fixed seat, a fixed frame is arranged on the fixed seat, a clamp lifting platform for fixing and clamping tuna is arranged on the fixed frame, and a profiling tool holder for processing and removing tuna skin is arranged above the clamp lifting platform.

[0005] Preferably, the profiling tool holder includes a guide rail connecting frame hinged on the top of a fixed frame and a driving mechanism for driving the profiling tool holder to open and close, a profiling guide rail is arranged on the guide rail connecting frame, a mounting bracket is arranged on the top of the profiling guide rail, a sliding guide rail is arranged on the mounting bracket, a driving motor is arranged at one end of the mounting bracket, a spiral screw is connected to the output end of the driving motor, a movable seat is provided on the spiral screw sleeve, a sliding block matching the sliding guide rail is arranged at the bottom of the movable seat, a connecting rod is connected to one side of the movable seat, and a movable tool holder is hinged at the bottom end of the connecting rod.

[0006] Preferably, the movable tool holder comprises a fixed plate arranged on the contoured guide rail, rotating rollers matching the contoured guide rail are arranged on both sides of the fixed plate, a connecting rod is installed at the bottom of the fixed plate, and a blade is installed at the bottom end of the connecting rod.

[0007] Preferably, the driving mechanism comprises a first cylinder provided with a top end of a fixed frame, and an output end of the first cylinder is connected to the guide rail connecting frame.

[0008] Preferably, the clamp lifting platform includes a second cylinder arranged on a fixed seat, the output end of the second cylinder is connected to the platform base, the platform base is a right-angled triangle structure, a yaw clamp is rotatably connected to the triangular inclined surface of the platform base, and a deflection mechanism for driving the yaw clamp to deflect is arranged at one end.

[0009] Preferably, the deflection mechanism includes a rotating motor provided with a top end of a triangular inclined surface of a platform base, an output end of the rotating motor is connected to a coupling, and the coupling is fixedly connected to an end of the deflection fixture.

[0010] Preferably, it also includes a lifting guide rod arranged side by side with the second cylinder on the fixed seat, and the bottom of the platform base is provided with a hole for the lifting guide rod to pass through.

[0011] Preferably, the deflection clamp comprises a clamp body arranged on the triangular inclined surface of the platform base, a third cylinder is arranged at one end of the clamp body, and an output end of the third cylinder is connected to a top block for fixing one side of the tuna.

[0012] Preferably, the triangular inclined surface of the platform base is provided with a semicircular groove, and the bottom of the clamp body is provided with a semicircular protrusion matching the semicircular groove.

[0013] Preferably, a plurality of extension blocks are arranged vertically on the inner side of the fixed frame, and the outer side of the extension block is embedded in one side of the platform base and slidably connected thereto.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: frozen tuna is placed on a deflection fixture, and the skin of the tuna is automatically removed by a blade on a contour processing tool holder, which can significantly improve the speed and accuracy of skinning, reduce the influence of human factors on the skinning effect, and thus improve the efficiency and quality of the entire tuna processing process.

[0015] Reduce labor costs. The tuna processing industry is a labor-intensive industry, and the peeling process requires a lot of human resources. The automated peeling device can reduce dependence on workers and reduce the labor costs of enterprises.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an automatic removal device for frozen tuna skin based on a contoured knife holder Figure 1 .

[0018] Figure 2 A schematic diagram of the three-dimensional structure of an automatic removal device for frozen tuna skin based on a contoured knife holder Figure 2 .

[0019] Figure 3 This is a schematic diagram of the closed state of a profiling tool holder of an automatic removal device for frozen tuna skin based on a profiling tool holder.

[0020] Figure 4 This is a schematic diagram of the open state of the profiling tool holder of an automatic removal device for frozen tuna skin based on a profiling tool holder.

[0021] Figure 5 Schematic diagram of the main body three-dimensional structure of the clamp lifting platform of a frozen tuna fish skin automatic removal device based on a contoured tool holder Figure 1 .

[0022] Figure 6 Schematic diagram of the main body three-dimensional structure of the clamp lifting platform of a frozen tuna fish skin automatic removal device based on a contoured tool holder Figure 2 .

[0023] Figure 7 This is a three-dimensional structural exploded view of the clamp lifting platform of an automatic removal device for frozen tuna skin based on a contoured tool holder.

[0024] Figure 8 Schematic diagram of the three-dimensional structure of a profiling tool holder for automatically removing the skin of frozen tuna based on a profiling tool holder Figure 1 .

[0025] Fig. 9 Schematic diagram of the three-dimensional structure of a profiling tool holder for automatically removing the skin of frozen tuna based on a profiling tool holder Figure 2 .

[0026] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of the main body of a movable knife holder of an automatic frozen tuna skin removal device based on a contoured knife holder.

[0027] In the figure: 1, fixed seat; 2, fixed frame; 21, extension block; 3, fixture lifting platform; 31, second cylinder; 32, platform base; 321, semicircular groove; 322, hole; 33, sway fixture; 331, fixture body; 3311, semicircular protrusion; 332, third cylinder; 333, top block; 34, deflection mechanism; 341, rotating motor; 342, coupling; 35, lifting guide rod; 4, profiling tool holder; 41, guide rail connecting frame; 42, profiling guide rail; 43, mounting bracket; 44, sliding guide rail; 45, driving motor; 46, screw rod; 47, movable seat; 471, sliding block; 48, connecting rod; 49, moving tool holder; 491, fixed plate; 492, rotating roller; 493, connecting rod; 494, blade; 5, driving mechanism; 51, first cylinder. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an automatic removal device for frozen tuna skin based on a profiling tool holder comprises a fixed seat 1, on which a fixed frame 2 is arranged, on which a clamp lifting platform 3 for fixing and clamping tuna is arranged, and above the clamp lifting platform 3 a profiling tool holder 4 for processing and removing tuna skin is arranged.

[0030] The present invention provides an automatic frozen tuna skin removal device based on a contoured knife holder, comprising a stable fixed base 1 as a support base for the entire device. A fixed frame 2 is installed on the fixed base 1, and the fixed frame 2 ensures the stability and reliability of the device in long-term operation.

[0031] A clamp lifting platform 3 is specially arranged on the fixed frame 2, and its main function is to fix and clamp the tuna. The clamp lifting platform 3 can move up and down through a mechanical transmission system, and can adjust the clamping height according to different tuna sizes to ensure that the tuna maintains a stable posture during the processing.

[0032] Located above the fixture lifting platform 3 is a technologically advanced profiling tool holder 4. The profiling tool holder 4 is responsible for accurately removing the fish skin of the tuna.

[0033] This automatic frozen tuna skin removal device based on a contoured knife holder achieves efficient, precise and automated tuna skin removal, bringing significant efficiency improvements and cost savings to the tuna processing industry.

[0034] Combination Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the profiling tool holder 4 includes a guide rail connecting frame 41 hinged on the top of the fixed frame 2 and a driving mechanism 5 for driving the profiling tool holder 4 to open and close, a profiling guide rail 42 is arranged on the guide rail connecting frame 41, a mounting bracket 43 is arranged on the top of the profiling guide rail 42, a sliding guide rail 44 is arranged on the mounting bracket 43, a driving motor 45 is arranged at one end of the mounting bracket 43, a screw rod 46 is connected to the output end of the driving motor 45, a movable seat 47 is sleeved on the screw rod 46, a sliding block 471 matching the sliding guide rail 44 is arranged at the bottom of the movable seat 47, a connecting rod 48 is connected to one side of the movable seat 47, and a movable tool holder 49 is hinged at the bottom end of the connecting rod 48.

[0035] The profiling tool rest 4 is mainly composed of a guide rail connecting frame 41, a profiling guide rail 42, a mounting bracket 43, a sliding guide rail 44, a driving motor 45, a screw rod 46, a movable seat 47, a sliding block 471, a connecting rod 48 and a movable tool rest 49.

[0036] The guide rail connecting frame 41 is hinged on the top of the fixed frame 2, allowing the profiling tool holder 4 to move flexibly within a certain range to adapt to tuna of different sizes and shapes. The guide rail connecting frame 41 not only provides stable support, but also ensures the accurate position of the profiling guide rail 42.

[0037] The contoured guide rail 42 is arranged on the guide rail connecting frame 41, simulating the outline of the tuna. A mounting bracket 43 is installed on the top of the contoured guide rail 42. One end of the mounting bracket 43 is equipped with a drive motor 45. The output end of the drive motor 45 is connected to a screw rod 46, and the screw rod 46 can generate linear motion through the rotation of the drive motor 45.

[0038] The movable seat 47 is sleeved on the screw rod 46, and a sliding block 471 matching the sliding guide rail 44 is arranged at the bottom thereof, so that the movable seat 47 can slide smoothly on the sliding guide rail 44 while maintaining synchronous movement with the screw rod 46. The close fit between the sliding block 471 and the sliding guide rail 44 ensures the accuracy and stability of the movement.

[0039] One side of the movable seat 47 is connected to the movable knife holder 49 through a connecting rod 48. When the driving motor 45 is working, the screw rod 46 drives the movable seat 47 to slide on the sliding guide rail 44, and then drives the movable knife holder 49 to perform contour movement through the connecting rod 48. The movable knife holder 49 is equipped with a sharp knife for accurately cutting the skin of the tuna.

[0040] The opening and closing actions of the profiling tool holder 4 are controlled by the driving mechanism 5. The driving mechanism 5 is used to control the motion trajectory and speed of the profiling tool holder 4. By adjusting the parameters of the driving mechanism 5, the user can flexibly adjust the working mode of the profiling tool holder 4 according to different tuna sizes and shapes to achieve the best cutting effect.

[0041] Combination Figure 2 , Figure 8 , Fig. 9 and Fig.10 As shown, the movable tool holder 49 includes a fixing plate 491 disposed on the profiling guide rail 42 , and the fixing plate 491 ensures that the movable tool holder 49 can move smoothly along the path of the profiling guide rail 42 during the profiling process.

[0042] In order to enhance the stability and flexibility of the movable tool holder 49 on the contoured guide rail 42, rotating rollers 492 matching the contoured guide rail 42 are provided on both sides of the fixed plate 491. The rotating rollers 492 not only perfectly match the shape and contour of the contoured guide rail 42, but also provide necessary rolling support during the movement, thereby reducing friction resistance and improving movement efficiency. The rotating rollers 492 make the movement of the movable tool holder 49 on the contoured guide rail 42 smoother and more stable.

[0043] A connecting rod 493 is installed at the bottom of the fixing plate 491, and a blade 494 is installed at the bottom end of the connecting rod 493. The connecting rod 493 not only enhances the structural strength between the fixing plate 491 and the blade 494, but also provides a stable installation base for the blade 494. The blade 494 ensures that it can efficiently and accurately cut the skin of the tuna.

[0044] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the driving mechanism 5 includes a first cylinder 51 disposed on the top of the fixed frame 2, and the first cylinder 51 ensures that stable and reliable power output can be provided when driving the profiling tool holder 4.

[0045] The output end of the first cylinder 51 is connected to the guide rail connecting frame 41. This not only ensures that the driving force of the first cylinder 51 can be accurately and efficiently transmitted to the guide rail connecting frame 41, but also allows the guide rail connecting frame 41 to move flexibly under the action of the driving force.

[0046] Combination Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the clamp lifting platform 3 includes a second cylinder 31 arranged on the fixed seat 1, which not only ensures that the driving force of the cylinder can be accurately and efficiently transmitted to the platform base 32, but also allows the platform base 32 to perform lifting and lowering movements under the action of the driving force.

[0047] The output end of the second cylinder 31 is connected to a platform base 32, which is a right-angled triangle structure. A deflection fixture 33 is rotatably connected to the triangular slope of the platform base 32. The right-angled triangle structure of the platform base 32 not only provides a stable support foundation, but also enables the platform base 32 to maintain balance and stability during the lifting process. The deflection fixture 33 is rotatably connected to the triangular slope of the platform base 32, and the deflection fixture 33 is allowed to perform flexible deflection motion on the triangular slope to accommodate tuna of different sizes and shapes.

[0048] A deflection mechanism 34 for driving the deflection of the deflection fixture 33 is disposed at one end thereof. The deflection mechanism 34 can achieve flexible adjustment of the deflection fixture 33 through precise transmission and control.

[0049] Combination Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the deflection mechanism 34 includes a rotating motor 341 provided with the top of the triangular slope of the platform base 32, and the output end of the rotating motor 341 is connected to a coupling 342, which not only ensures the accurate transmission of power, but also allows the rotating motor 341 to maintain a stable operating state during the driving process.

[0050] The coupling 342 is fixedly connected to the end of the yaw fixture 33. The coupling 342 serves as a connecting bridge between the rotating motor 341 and the yaw fixture 33, and fully considers the transmission efficiency and stability requirements. One end of the coupling 342 is tightly connected to the output end of the rotating motor 341, and the other end is fixedly connected to the end of the yaw fixture 33. Not only does it achieve smooth power transmission, but it also allows the yaw fixture 33 to perform flexible deflection movement under the drive of the rotating motor 341.

[0051] The specific implementation method is as follows: First, the driving mechanism 5 opens the profiling tool holder 4, and after the frozen tuna is cut into four parts, it is clamped on the deflection fixture 33, and the deflection angle of the frozen tuna body is adjusted by the deflection mechanism 34. The first knife deflects 30 degrees to the left, and the height is adjusted up and down so that the fish body is aligned with the knife. Peeling and cutting are performed, and the deflection angle of the frozen tuna body is adjusted again by the deflection mechanism 34. The second knife deflects 30 degrees to the right, and the height is adjusted up and down so that the fish body is against the knife. Peeling and cutting are performed, and the deflection angle of the frozen tuna body is adjusted for the last time by the deflection mechanism 34. The third knife deflects 30 degrees to the right on the basis of the previous knife, and the height is adjusted up and down so that the fish body is aligned with the knife. Peeling and cutting are performed. The entire frozen tuna body peeling process is completed.

[0052] Combination Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, it also includes a lifting guide rod 35 arranged side by side with the second cylinder 31 on the fixed base 1. The lifting guide rod 35 greatly enhances the stability and guidance of the platform base 32 during the lifting process.

[0053] The bottom of the platform base 32 is provided with a hole 322 for the lifting guide rod 35 to pass through. One end of the lifting guide rod 35 is firmly fixed on the fixing seat 1, and the other end is freely extended to pass through the hole 322 specially opened at the bottom of the platform base 32. Not only does it limit the freedom of the platform base 32 in the lifting direction, but it also ensures its stable movement in the vertical direction, effectively preventing the platform base 32 from swinging or shaking during the lifting process.

[0054] During the lifting process, the second cylinder 31 provides the main driving force, while the lifting guide rod 35 plays a key guiding and supporting role. They work together to ensure that the platform base 32 can perform a smooth and accurate lifting movement along a predetermined trajectory. This not only improves the working efficiency and stability of the fixture lifting platform 3, but also provides a solid foundation for subsequent processing operations.

[0055] Combination Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the deflection fixture 33 includes a fixture body 331 disposed on the triangular inclined surface of the platform base 32, and the fixture body 331 is connected to the deflection mechanism 34 to achieve flexible deflection movement.

[0056] A third cylinder 332 is provided at one end of the clamp body 331, and a top block 333 for fixing one side of the tuna is connected to the output end of the third cylinder 332. The third cylinder 332 not only ensures the accurate transmission of power, but also allows the top block 333 to perform flexible telescopic movement under the drive of the third cylinder 332. One end of the top block 333 is connected to the output end of the third cylinder 332, and the other end is designed to be a contact surface that matches the shape of the tuna. When the third cylinder 332 is started, its output end pushes the top block 333 to move toward one side of the tuna until it contacts and fixes the tuna. The contact surface of the top block 333 is finely processed and treated to ensure a good fit and friction coefficient with the tuna, thereby preventing the tuna from sliding or shifting during processing.

[0057] Combination Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the triangular inclined surface of the platform base 32 is provided with a semicircular groove 321 , and the bottom of the clamp body 331 is provided with a semicircular protrusion 3311 matching the semicircular groove 321 .

[0058] The connection design between the platform base 32 and the fixture body 331 not only ensures the stability and accuracy of the fixture, but also provides a strong guarantee for the overall performance of the equipment.

[0059] A semicircular groove 321 is provided on the triangular slope of the platform base 32, which not only enhances the structural strength of the platform base 32, but also provides an accurate reference for the installation and positioning of the fixture body 331. The contour of the semicircular groove 321 is precisely machined to ensure a perfect match with the semicircular protrusion 3311 on the fixture body 331.

[0060] The bottom of the clamp body 331 is designed with a semicircular protrusion 3311 that matches the semicircular groove 321. Not only can the clamp body 331 be firmly mounted on the platform base 32, but also its stability and accuracy during the deflection process are ensured. The semicircular protrusion 3311 ensures a close fit and friction coefficient between it and the semicircular groove 321.

[0061] When the fixture body 331 is mounted on the platform base 32, the semicircular protrusion 3311 is accurately embedded in the semicircular groove 321, forming a stable and reliable connection. Not only does it limit the freedom of the fixture body 331 in the horizontal direction, but it also ensures its stability in the vertical direction. At the same time, due to the close fit between the semicircular protrusion 3311 and the semicircular groove 321, the fixture body 331 can maintain a stable motion trajectory during the deflection process, avoiding processing errors caused by shaking or yaw.

[0062] Combination Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, a plurality of extension blocks 21 are arranged vertically on the inner side of the fixed frame 2, and the outer side of the extension block 21 is embedded in one side of the platform base 32 and slidably connected thereto.

[0063] Several extension blocks 21 are carefully arranged on the inner side of the fixed frame 2. These extension blocks 21 are vertically distributed and form the track foundation for the sliding of the platform base 32. The extension blocks 21 ensure sufficient rigidity and wear resistance to withstand various forces and moments generated by the platform base 32 during lifting and deflection.

[0064] One side of the platform base 32 is designed with a sliding groove or a sliding rail that matches the sliding surface of the extension block 21, so that the platform base 32 can slide up and down smoothly along the extension block 21. This not only ensures the stability of the platform base 32 during the lifting process, but also allows it to be accurately displaced in the vertical direction.

[0065] The present invention is a preferred specific implementation manner, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A frozen tuna skin automatic removal device based on a contoured knife holder, comprising a fixed seat (1), on which a fixed frame (2) is arranged, characterized in that: A clamp lifting platform (3) for fixing and clamping the tuna is arranged on the fixed frame (2), and a profiling tool holder (4) for processing and removing the tuna skin is arranged above the clamp lifting platform (3).

2. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 1, characterized in that: The profiling tool holder (4) comprises a guide rail connecting frame (41) hinged on the top of a fixed frame (2) and a driving mechanism (5) for driving the profiling tool holder (4) to open and close. A profiling guide rail (42) is arranged on the guide rail connecting frame (41), a mounting bracket (43) is arranged on the top of the profiling guide rail (42), a sliding guide rail (44) is arranged on the mounting bracket (43), a driving motor (45) is arranged at one end of the mounting bracket (43), a spiral screw rod (46) is connected to the output end of the driving motor (45), a movable seat (47) is sleeved on the spiral screw rod (46), a sliding block (471) matching the sliding guide rail (44) is arranged at the bottom of the movable seat (47), a connecting rod (48) is connected to one side of the movable seat (47), and a movable tool holder (49) is hinged at the bottom end of the connecting rod (48).

3. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 2, characterized in that: The movable blade holder (49) comprises a fixed plate (491) arranged on the contoured guide rail (42), rotating rollers (492) matching the contoured guide rail (42) are arranged on both sides of the fixed plate (491), a connecting rod (493) is installed at the bottom of the fixed plate (491), and a blade (494) is installed at the bottom end of the connecting rod (493).

4. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 2, characterized in that: The driving mechanism (5) comprises a first cylinder (51) provided at the top of a fixed frame (2), and an output end of the first cylinder (51) is connected to a guide rail connecting frame (41).

5. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 1, characterized in that: The fixture lifting platform (3) comprises a second cylinder (31) arranged on a fixed seat (1); the output end of the second cylinder (31) is connected to a platform base (32); the platform base (32) is a right-angled triangle structure; a deflection fixture (33) is rotatably connected to the triangular inclined surface of the platform base (32); and a deflection mechanism (34) for driving the deflection fixture (33) to deflect is arranged at one end.

6. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 5, characterized in that: The deflection mechanism (34) comprises a rotating motor (341) provided with the top end of the triangular inclined surface of the platform base (32); the output end of the rotating motor (341) is connected to a coupling (342); and the coupling (342) is fixedly connected to the end of the deflection fixture (33).

7. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 6, characterized in that: It also includes a lifting guide rod (35) arranged side by side with the second cylinder (31) on the fixed seat (1), and a hole (322) for the lifting guide rod (35) to pass through is arranged at the bottom of the platform base (32).

8. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 7, characterized in that: The deflection clamp (33) comprises a clamp body (331) arranged on a triangular inclined surface of a platform base (32); a third cylinder (332) is arranged at one end of the clamp body (331); and a top block (333) for fixing one side of the tuna is connected to the output end of the third cylinder (332).

9. The automatic removal device for frozen tuna skin based on a contoured knife holder according to claim 8, characterized in that: The triangular inclined surface of the platform base (32) is provided with a semicircular groove (321), and the bottom of the clamp body (331) is provided with a semicircular protrusion (3311) matching the semicircular groove (321).

10. The automatic removal device for frozen tuna skin based on a contoured knife holder according to any one of claims 1 to 9, characterized in that: A plurality of extension blocks (21) are arranged vertically on the inner side of the fixed frame (2), and the outer side of the extension block (21) is embedded in one side of the platform base (32) and is slidably connected thereto.

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