Automatic shell opening and meat taking equipment for fresh oysters

Abstract

The invention discloses automatic shell opening and meat taking equipment for fresh oysters. The equipment comprises a rack, and a screening mechanism, a straightening mechanism, a shell opening mechanism, a clamping mechanism, a shearing mechanism, a turnover mechanism, a meat taking mechanism, an oyster meat collector, an identification mechanism, a classification mechanism, an oyster shell collector, a pushing mechanism and a conveying mechanism which are arranged on the rack. The equipment realizes ordered feeding through screening and straightening; fresh oysters with different shapes are stably clamped through the self-adaptive clamping mechanism; oyster shells at the front end are sheared off by the shearing mechanism, and then the shells are pried by the shell opening mechanism; and finally, after identification, the meat is accurately taken by the meat taking mechanism, and the shell and meat are automatically sorted and collected by the classification mechanism. The full-process automatic oyster shell opening and meat taking device achieves full-process automation of oyster shell opening and meat taking, has the advantages of being high in efficiency, good in safety, high in adaptability and capable of guaranteeing completeness and sanitation of oyster meat, and solves the problems that manual operation is high in risk and low in efficiency, and existing automatic equipment is poor in adaptability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processing machinery and equipment, more particularly to an automatic oyster shelling and meat taking device. BACKGROUND

[0002] Oysters are a popular aquatic product, and they must be shelled and the meat removed before being eaten. At present, the main method of shelling and meat taking is manual shelling and meat taking, and the meat is still manually removed after semi-automatic shelling. Manual shelling is the most commonly used method in the catering industry. The operator must use a specially designed oyster knife, find the gap by experience, cut into the rotating knife body to cut off the adductor muscle, complete the shelling, cut off the adductor muscle on the other side, and then take out the meat. However, this method has significant drawbacks. First, it is inefficient and labor-intensive. Second, the shelling quality is unstable and is affected by the operator's proficiency and fatigue, which can easily damage the oyster meat and affect the quality and appearance of the oyster meat.

[0003] Semi-automatic shelling devices have been developed in the prior art. For example, as shown in the patent document with publication number CN221510832U, the oyster is fixed by upper and lower clamping plates, and the operator then inserts a knife from the gap in the oyster shell to shell it. As shown in the patent document with publication number CN108576181A, the oyster is placed on a clamping mechanism by hand, and then an electric knife is used to pry open the oyster shell. However, these devices still have significant shortcomings. First, both devices do not have a meat taking step. Second, the degree of automation is low, and human intervention is still required, making it impossible to achieve a fully automatic process of feeding, positioning, shelling, and meat taking. Third, there is no intelligent recognition capability, and the size of the oyster shell cannot be identified, nor can it be determined whether the shelling is successful.

[0004] For example, as shown in the patent document with publication number CN11878018A, it includes a shelling, cleaning, conveying, and meat taking mechanism. In the shelling step, the oyster must be clamped vertically, and a hole is drilled in the gap of the oyster shell. However, due to the irregular shape of the oyster shell, the clamping mechanism may become stuck or the oyster may not be vertical when clamping the oyster, which can cause inaccurate positioning during the next drilling step. In addition, the oyster shell debris generated during drilling can contaminate the oyster meat. The use of a pneumatic device in the meat taking step makes the entire mechanism complex and relatively expensive, and the oyster shell after the meat is taken is not properly handled.

[0005] Therefore, there is an urgent need for a fully automatic oyster shelling and meat taking device that is efficient, safe, hygienic, adaptable, and relatively simple in structure. SUMMARY

[0006] The present application aims to overcome the above-mentioned shortcomings of the prior art and provide an automatic oyster shelling and meat taking device with a new structure that can at least solve one of the above problems.

[0007] The objective of this invention can be achieved through the following technical solutions: An automatic oyster shucking and meat extraction device includes at least: frame; The sorting mechanism, located on the frame, is used to output individual oysters; The conveying mechanism is located on the frame, and its inlet is connected to the outlet of the screening mechanism; The straightening mechanism, located on the frame and along the conveyor, is used to straighten the oysters into a preset position. The clamping mechanism, located on the frame, is used to clamp and secure oysters; A cutting mechanism, located on the frame and adjacent to the clamping mechanism, is used to cut off the front shell of the clamped oyster. The shell-opening mechanism, located on the frame and adjacent to the clamping mechanism, is used to pry open the cut oysters; The pushing mechanism, located on the frame, is used to push oysters from the conveying mechanism into the clamping mechanism and to push out the oyster shells after they have been opened. The flipping mechanism, located on the frame and corresponding to the discharge port of the conveying mechanism, is used to receive and hold oyster shells; The identification mechanism, located on the frame and corresponding to the flipping mechanism, is used to identify the posture of the oyster shell and whether oyster meat is attached to it. The meat extraction mechanism, located on the frame and corresponding to the flipping mechanism, is used to extract oyster meat from the oyster shell based on the recognition result. The sorting mechanism is located on the frame and below the flipping mechanism; Oyster meat collectors and oyster shell collectors are mounted on the frame and are respectively set up with the sorting mechanism.

[0008] As a further technical solution of the present invention, the screening mechanism includes a shell, a vibration component, multiple rollers arranged in parallel to form an inclined transport surface, and limiting curved surfaces provided on both sides of the transport surface. The vibration component drives the shell to vibrate so that the oysters slide downward along the transport surface and are output one by one guided by the limiting curved surfaces.

[0009] As a further technical solution of the present invention, the clamping mechanism includes a driving component and an adaptive clamping component; The drive assembly includes a third drive element and a first screw connected to its drive end; The adaptive clamping assembly includes a first sliding block movably fitted onto the first screw, a first fixing block fixedly fitted onto the first screw, and a pair of clamping modules respectively mounted on the first sliding block and the first fixing block and cooperating with each other; Each clamping module includes a primary clamping block, a secondary clamping block, and a tertiary clamping block that are rotatably connected in sequence. The clamping surfaces of the three-level clamping blocks have toothed structures, and a figure-eight space, narrow at the top and wide at the bottom, is formed between the clamping surfaces of a pair of clamping modules.

[0010] As a further technical solution of the present invention, the bottom of the first-level clamping block is slidably engaged with the first groove opened on the first sliding block or the first fixed block through the first sliding member, the bottom of the second-level clamping block is slidably engaged with the second groove opened on the first-level clamping block through the second sliding member, and the bottom of the third-level clamping block is slidably engaged with the third groove opened on the second-level clamping block through the third sliding member.

[0011] As a further technical solution of the present invention, the shearing mechanism includes a fifth driving member, a mounting bracket, and a shearing assembly driven by the fifth driving member; The mounting bracket includes a fixing plate and a slide plate, and the slide plate has a pair of fifth slide grooves whose ends are close to each other; The cutting assembly includes a pair of cutting blades with their front ends cross-hinged, and the tail ends of the cutting blades are connected to a sliding shaft that slides in cooperation with a fifth slide groove; The fifth driving component drives the shear blades to move, causing the sliding shaft to move along the fifth slide groove to the end, at which point the front ends of a pair of shear blades come close to each other to complete the cutting.

[0012] As a further technical solution of the present invention, the shell opening mechanism includes a sixth driving member, a third transmission component, and a shell opening component; The third transmission assembly includes a second connecting rod, a third connecting rod, and a guide rod that are hinged in sequence, with the middle of the guide rod movably fitted onto a fixed block; The shell opening assembly includes a third fixed block mounted on the frame, a shell opening tool holder hinged to the third fixed block, a second sliding block movably mounted on the shell opening tool holder, and a shell opening tool fixed to the shell opening tool holder. The end of the guide rod is connected to the second sliding block to drive the shell-opening knife holder to rotate around its hinge point, so that the shell-opening knife can be inserted into the oyster shell crevices and pry it open.

[0013] As a further technical solution of the present invention, the third transmission assembly also includes a second fixed block, the middle part of the guide rod is movably fitted onto the second fixed block, so that the guide rod can move up and down relative to the second fixed block under the drive of the third connecting rod, and a sixth sliding groove is provided on the shell opening tool holder, and the second sliding block is limited to the sixth sliding groove.

[0014] As a further technical solution of the present invention, the flipping mechanism includes a flipping box that can be flipped and a seventh driving member that drives the flipping box to flip. The upper and lower end faces and the front end face of the flipping box are all open, and the upper and lower end faces are provided with inwardly folded edges.

[0015] As a further technical solution of the present invention, the meat-removing mechanism includes a lifting drive assembly, a horizontal drive assembly disposed on the lifting drive assembly, and a meat-removing assembly disposed on the horizontal drive assembly. The meat extraction assembly includes a mounting base, a fourth sliding block disposed on the mounting base, a pair of meat extraction blades hinged to the fourth sliding block, and a tightening module that drives the heads of the pair of meat extraction blades to move closer or further apart from each other.

[0016] As a further technical solution of the present invention, the sorting mechanism includes a rotatable sorting plate and an eleventh driving member for driving the sorting plate to rotate. The sorting plate rotates to different angles according to the identification result to guide the oyster meat into the oyster meat collector or to make the oyster shell fall into the oyster shell collector.

[0017] The beneficial effects of this invention are as follows: 1. It has achieved full automation of the oyster shelling and meat extraction process, significantly improving production efficiency and reducing labor costs and operational risks.

[0018] 2. Through the curved surface limiting and vibration design of the screening mechanism, oysters are transported one by one in an orderly manner, avoiding blockage.

[0019] 3. The multi-stage rotatable adaptive design of the clamping mechanism can effectively clamp oysters of different shapes and sizes, and provide downward pressure to prevent them from tilting upwards, providing stable support for subsequent processes.

[0020] 4. The cutting mechanism adopts a scissor-like sliding drive method to precisely cut the front of the oyster shell, avoiding debris from contaminating the oyster meat and providing space for opening the shell.

[0021] 5. The shell-opening mechanism uses a linkage mechanism to convert the rotational motion into the prying action of the shell-opening blade, which is powerful and precise, and the sliding groove design prevents jamming.

[0022] 6. Combining the flipping mechanism and the recognition mechanism, the oyster shell posture and the presence of oyster meat are automatically identified, realizing intelligent sorting of shells with and without meat.

[0023] 7. The meat-removing mechanism uses a combination of lifting, horizontal movement, and blade tightening motion to accurately remove oyster meat based on visual positioning, ensuring the oyster meat remains intact.

[0024] 8. The overall structure is compact and the various mechanisms work together efficiently, reducing the use of complex systems such as pneumatics, thus lowering manufacturing costs and maintenance difficulty.

[0025] 9. Fully automated operation reduces human contact and improves hygiene standards in food processing. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a perspective view of an automatic oyster shell-opening and meat-extracting device according to one embodiment of the present invention.

[0028] Figure 2This is a perspective view of a screening mechanism according to one embodiment of the present invention.

[0029] Figure 3 yes Figure 2 A partially enlarged view of the screening mechanism shown.

[0030] Figure 4 yes Figure 2 A three-dimensional view of the screening mechanism from another angle.

[0031] Figure 5 yes Figure 4 The diagram shows the assembly of the first connecting rod and the driving rod of the screening mechanism.

[0032] Figure 6 This is a perspective view of the alignment mechanism according to one embodiment of the present invention.

[0033] Figure 7 for Figure 1 The image shown is one of the three-dimensional views of the automatic oyster shucking and meat extraction device, with some structural details omitted.

[0034] Figure 8 yes Figure 7 The diagram shows the pushing mechanism of an automatic oyster shucking and meat extraction device.

[0035] Figure 9 This is a perspective view of a clamping mechanism according to an embodiment of the present invention.

[0036] Figure 10 yes Figure 9 A schematic diagram of the assembly of one set of adjacent clamping blocks of the clamping mechanism shown.

[0037] Figure 11 yes Figure 7 The diagram shown is a 3D view of an automated oyster shucking and meat extraction device with some mechanisms omitted. Figure 12 yes Figure 11 The diagram shows an assembly drawing of part of the structure of an automatic oyster shucking and meat extraction device.

[0038] Figure 13 This is a perspective view of an embodiment of the shell-opening mechanism of the present invention.

[0039] Figure 14 for Figure 1 The second 3D view of the automatic oyster shucking and meat extraction device, with some structural details omitted.

[0040] Figure 15 for Figure 14 The diagram shows the meat-removing component of an automatic oyster shucker.

[0041] Figures 1-15 The annotations in the accompanying drawings are explained as follows: Screening mechanism; 101, feed inlet; 102, housing; 103, bearing; 104, vibration assembly; 1041, connecting rod shaft; 1042, first bearing seat; 1043, first connecting rod; 1044, drive rod; 1045, first driving component; 1046, second bearing seat; 105, roller; 106, limiting curved surface; 107, spring; 2. Alignment mechanism; 201, second driving component; 202, first transmission assembly; 203, first sensor; 204, alignment hand; 3. Opening mechanism; 301, sixth driving component; 302, second connecting rod; 303, third connecting rod; 304, guide rod; 3 05. Second fixed block; 306. Second sliding block; 307. Shell opening knife holder; 307a. Sixth slide groove; 308. Shell opening knife; 309. Third fixed block; 4. Clamping mechanism; 401. Third driving member; 402. First screw; 403. First sliding block; 404. First fixed block; 405. First-level clamping block; 406. Second-level clamping block; 406a. Second sliding member; 406b. Third slide groove; 407. Third-level clamping block; 407a. Third sliding member; 407b. Toothed structure; 5. Shearing mechanism; 501. Fifth driving member; 502. Fixed plate; 502a. Fourth slide groove; 503. 503a, Fifth Slide; 504, Third Sliding Block; 505, Sliding Shaft; 506, Cutting Blade; 6, Flipping Mechanism; 601, Flipping Box; 601a, Folded Edge; 602, First Fixed Seat; 603, Flange; 604, Shaft-shaped Component; 605, Seventh Driving Component; 7, Meat Removing Mechanism; 7a, Lifting Drive Assembly; 701, Screw and Nut Transmission Module; 7b, Horizontal Drive Assembly; 702, Ninth Driving Component; 703, Gear and Rack Transmission Module; 7c, Meat Removing Assembly; 704, Mounting Seat; 704a, Seventh Slide; 705, Meat Removing Blade; 706, Fourth Sliding Block; 707. Tenth driving component; 708. Tightening bracket; 8. Oyster meat collector; 9. Identification mechanism; 10. Sorting mechanism; 1001. Eleventh driving component; 1002. Sorting plate; 11. Oyster shell collector; 12. Pushing mechanism; 1201. Fourth driving component; 1202. First pusher; 1203. Second pusher; 1204. First rack; 1205. First gear; 1206. First slider; 1207. First linear guide rail; 1208. Second sensor; 13. Conveying mechanism; 14. Oyster; 1401. Oyster shell without meat; 1402. Oyster shell with meat; 1403. Oyster meat. Detailed Implementation

[0042] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0043] like Figures 1-15As shown, it schematically illustrates an automatic oyster shell opening and meat extraction device of the present invention.

[0044] The automatic oyster shelling and meat extraction device of the present invention includes a frame and a sorting mechanism 1, a straightening mechanism 2, a shell opening mechanism 3, a clamping mechanism 4, a cutting mechanism 5, a flipping mechanism 6, a meat extraction mechanism 7, an oyster meat collector 8, an identification mechanism 9 (industrial camera), a sorting mechanism 10, an oyster shell collector 11, a pushing mechanism 12, and a conveying mechanism 13.

[0045] The frame is made of aluminum profile. The discharge port of the screening mechanism 1 is connected to the inlet of the conveying mechanism 13, and the discharge port of the conveying mechanism 13 is connected to the inlet of the turning mechanism 6.

[0046] like Figures 2-5 As shown, the screening mechanism 1 mainly consists of an inlet 101, a housing 102, a bearing 103, a vibration assembly 104, a roller 105, a limiting curved surface 106, and a spring 107. The inlet 101 is located above the housing 102, and the two are connected by the spring 107. The vibration assembly 104 includes a connecting rod shaft 1041, a first bearing seat 1042, a first connecting rod 1043, a drive rod 1044, a first driving element 1045 (motor), and a second bearing seat 1046. The second bearing seat 1046 is connected to the connecting rod shaft 1041, the first connecting rod 1043 is connected to the connecting rod shaft 1041, the first connecting rod 1043 is connected to the drive rod 1044, and the drive rod 1044 is connected to both the first driving element 1045 and the first bearing seat 1042. The rollers 105 are rotatably mounted on the housing 102 via bearings 103 at both ends. Multiple rollers 105 are arranged sequentially from high to low to form a downward-sloping transport surface, along which oysters can roll downwards under the influence of gravity and vibration. A limiting surface 106 is provided inside the housing 102, formed on one side of the transport surface, to limit the movement of oysters passing over the transport surface.

[0047] The working principle of the screening mechanism 1 is as follows: Oysters 14 enter through the inlet 101 and fall onto the rollers 105 in the shell 102. The first drive member 1045 of the vibration assembly 104 rotates, driving the active rod 1044 to rotate. The active rod 1044 uses an eccentric design, and when it rotates, it drives the first connecting rod 1043 to vibrate up and down, thus causing the entire shell 102 to vibrate up and down. Under vibration, the oysters 14 continuously move downwards along the transport surface formed by multiple rollers 105. Due to the limiting effect of the limiting curved surface 106 (protruding inwards), the oysters 14 will enter the conveying mechanism 13 one by one. During the entire screening process, the eccentric design of the active rod 1044 drives the first connecting rod 1043 to move, causing the shell 102 to vibrate up and down, so that the oysters gradually approach the outlet. The design of the limiting curved surface 106 ensures that the oysters enter the transmission mechanism 13 one by one, preventing jamming.

[0048] like Figure 6 As shown, the straightening mechanism 2 mainly consists of a second drive unit 201 (motor), a first transmission assembly 202, a first sensor 203 (laser sensor), and a straightening hand 204. The second drive unit 201 is connected to the first transmission assembly 202, which is connected to the straightening hand 204. The first sensor 203 is placed on the conveying mechanism 13 near the straightening hand 204. When the oyster 14 passes the first sensor 203, the second drive unit 201 drives the first transmission assembly 202 to push out the straightening hand 204. The straightening hand 204 then presses against the front side of the oyster 14, changing the orientation of the oyster 14 from parallel to the conveying direction to perpendicular to the conveying direction. The entire straightening process utilizes laser intelligent recognition to orient the oyster, preparing it for the next step of pushing the oyster into the clamping mechanism 4.

[0049] like Figures 7-10 As shown, the clamping mechanism 4 mainly consists of a drive assembly and an adaptive clamping assembly. The drive assembly includes a third drive member 401 (motor) and a first screw 402 connected to the drive end of the third drive member 401. The adaptive clamping assembly includes a first sliding block 403, a first fixing block 404, and pairs of clamping modules respectively mounted on the first sliding block 403 and the first fixing block 404 and cooperating with each other. Each clamping module includes a primary clamping block 405, a secondary clamping block 406, and a tertiary clamping block 407. The first fixing block 404 is fixedly fitted onto the outer periphery of the first screw 402, and the first sliding block 403 is movably fitted onto the outer periphery of the first screw 402. The primary clamping block 405 is connected to the first sliding block 403 or the first fixing block 404, the secondary clamping block 406 is connected to the primary clamping block 405, and the tertiary clamping block 407 is connected to the secondary clamping block 406.

[0050] Preferably, the primary clamping block 405, the secondary clamping block 406, and the tertiary clamping block 407 can all rotate, as specifically implemented as follows: like Figure 10 As shown, a first sliding groove is provided on the first sliding block 403 or the first fixed block 404, and a first sliding member is provided at the bottom of the first-stage clamping block 405 to slide in cooperation with the first sliding groove; a second sliding groove is provided on the first-stage clamping block 405, and a second sliding member 406a is provided at the bottom of the second-stage clamping block 406 to slide in cooperation with the second sliding groove; a third sliding groove 406b is provided on the second-stage clamping block 406, and a third sliding member 407a is provided at the bottom of the third-stage clamping block 407 to slide in cooperation with the third sliding groove 406b.

[0051] Thus, adjacent clamping blocks (such as primary clamping block 405 and secondary clamping block 406) are movably connected by sliding engagement of sliding member + sliding groove (arc-shaped groove), and the lower clamping block (such as tertiary clamping block 407) can be rotated by inserting a sliding member (such as third sliding member 407a) into the sliding groove (third sliding groove 406b) of the upper clamping block (secondary clamping block 406).

[0052] Preferably, the clamping surface of the three-stage clamping block 407 is provided with a toothed structure 407b, which can increase the friction during clamping. The clamping angle between the clamping surface of the three-stage clamping block 407 and the horizontal plane is 75-85° (preferably 80°) (that is, the clamping space between a pair of clamping modules is in the shape of a figure eight with a small gap at the top and a large gap at the bottom). In this way, when the clamping mechanism 4 clamps the oyster, it will generate a downward pressure, preventing the oyster from tilting upwards during clamping.

[0053] like Figures 7-8 As shown, the pushing mechanism 12 includes a fourth driving component 1201 (motor), a second transmission assembly (gear and rack transmission structure), a guide assembly (slider and slide rail guide structure), a second sensor 1208, a first pusher 1202, and a second pusher 1203. The fourth driving component 1201 is mounted on the frame and is poweredly connected to the second transmission assembly. The second transmission assembly is a gear and rack transmission structure, including a first rack 1204 and a first gear 1205. The first gear 1205 is fitted onto the driving end of the fourth driving component 1201. The first rack 1204 is movably mounted on the frame via the guide assembly and meshes with the first gear. The guide assembly includes a first slider 1206 mounted on the frame and a first linear guide rail 1207 slidably mounted on the first slider 1206 and fixedly connected to the first rack 1204. The first pusher 1202 and the second pusher 1203 are respectively mounted at both ends of the first linear guide rail 1207. The second sensor 1208 is mounted on the frame and is used to detect whether the oysters to be opened have reached the working area of ​​the pushing mechanism 12.

[0054] The working principle of the clamping mechanism 4 is as follows: After the oyster 14 is aligned by the aligning mechanism 2, when the conveying mechanism 13 conveys the oyster 14 to the second sensor 1208, the fourth driving component 1201 drives the second transmission component to move, causing the first pusher 1202 to push the oyster 14 into the working area of ​​the clamping mechanism 4. When the clamping mechanism 4 moves, the third driving component 401 drives the first screw 402 to rotate. The rotation of the first screw 402 causes the first sliding block 403 to move towards the first fixed block 404, and the oyster 14 contacts the three-stage clamping block 407, self-adaptively clamping. Then, the cutting mechanism 5 cuts off the front end of the oyster shell, and the shell-opening mechanism 3 opens it. After the shell is opened, it is pushed out by the second pusher 1203 to the conveying mechanism 13, and the oyster shells 14 entering the conveying mechanism 13 are automatically divided into meatless oyster shells 1401 and meaty oyster shells 1402 and conveyed to the subsequent process.

[0055] like Figures 11-12 As shown, the shearing mechanism 5 mainly consists of a fifth driving component 501 (electric push rod), a mounting frame, a movable component, and a shearing component. The mounting frame is mounted on the machine frame. The fifth driving component 501 is mounted on the mounting frame and its driving end is connected to the movable component. The movable component is movably mounted on the mounting frame. The mounting frame includes a fixed plate 502 and a sliding plate 503. The fixed plate 502 is mounted on the machine frame, and the sliding plate 503 is mounted on the fixed plate 502 with a gap between them. The movable component includes a third sliding block 504 and a sliding shaft 505. The third sliding block 504 is slidably engaged with the fixed plate 502, and the sliding shaft 505 is slidably engaged with the sliding plate 503. The fixed plate 502 has a fourth sliding groove 502a that engages with the third sliding block 504, and the sliding plate 503 has a fifth sliding groove 503a that engages with the sliding shaft 505. The shearing component includes a pair of shearing blades 506 that are hinged to each other. The slide plate 503 is connected to the fixed plate 502. The shear blade 506 is hinged to the third sliding block 504 and its tail is connected to the slide plate 503 through the sliding shaft 505. The front ends of the pair of shear blades 506 are hinged to each other at their intersection. The third sliding block 504 is connected to the driving end of the fifth driving member 501. There is a pair of fifth slides 503a. The fifth slide includes a straight section at the head and an inclined section at the tail. The inclined sections at the ends of the pair of fifth slides 503a are close to each other.

[0056] The working principle of the cutting mechanism 5 is as follows: After the clamping mechanism 4 clamps the oyster, the cutting mechanism 5 is activated. The fifth driving component 501 drives the third sliding block 504 to move forward. The third sliding block 504 moves along the fourth groove 502a on the inner wall of the fixed plate 502 to ensure stable feeding. The third sliding block 504 drives a pair of cutting blades 506 to move along the fifth groove 503a of the slide plate 503 via the sliding shaft 505. When they slide to the end of the fifth groove 503a, the front ends of the pair of cutting blades 506 come together to cut off the front shell of the oyster, facilitating subsequent shell opening. For ease of explanation, the oyster with the front shell cut off can now be divided into meatless oyster shell 1401 and meaty oyster shell 1402. The groove design of the slide plate 503 of the cutting mechanism 5 allows the cutting blades 506 to extend, functioning like scissors to cut off the front shell of the oyster. This avoids contamination of the oyster meat by oyster shell fragments and also allows for more space for the next step of shell opening.

[0057] like Figure 13 As shown, the shell-opening mechanism 3 mainly consists of a sixth driving component 301 (motor), a third transmission assembly (linkage structure), and a shell-opening assembly. The sixth driving component 301 is poweredly connected to the third transmission assembly, which is connected to the shell-opening assembly. The third transmission assembly includes a second connecting rod 302, a third connecting rod 303, a guide rod 304, and a second fixing block 305. The shell-opening assembly includes a second sliding block 306, a shell-opening tool holder 307, a third fixing block 309, and a shell-opening blade 308. The driving end of the sixth driving component 301 is connected to the first end of the second connecting rod 302. The second end of the second connecting rod 302 is hinged to the first end of the third connecting rod 303. The second end of the third connecting rod 303 is hinged to the first end of the guide rod 304. The second end of the guide rod 304 is connected to the second sliding block 306 via a shaft. The second sliding block 306 is movably mounted on the shell-opening tool holder 307. The shell-opening tool holder 307 is connected to the third fixing block 309 via a shaft. The middle part of the guide rod 304 is movably fitted onto the second fixed block 305 and can move up and down relative to the second fixed block 305. The shell-opening knife 308 is fixedly mounted on the shell-opening knife holder 307, and the entire shell-opening knife 308 and shell-opening knife holder 307 are Z-shaped. The shell-opening knife holder 307 is provided with a sixth sliding groove 307a that cooperates with the second sliding block 306 for limiting.

[0058] The working principle of the shell-opening mechanism 3 is as follows: the clamping mechanism 4 clamps the oyster, and the sixth driving component 301 drives the second connecting rod 302 to rotate. The rotation of the second connecting rod 302 drives the third connecting rod 303 to rotate. Because the second sliding block 306 restricts the other degrees of freedom of the guide rod 304, the third connecting rod 303 drives the guide rod 304 to move up and down. The guide rod 304 drives the second sliding block 306, thereby driving the shell-opening knife holder 307 to rotate. This allows the shell-opening knife 308 to be inserted into the oyster shell after it has been cut by the cutting mechanism 5, and then the oyster shell to be pried open. The entire process utilizes a linkage mechanism, cleverly mechanizing the shell-opening process. Among them, the shell-opening knife holder 307 is designed with a sixth sliding groove 307a. During shell opening, the second sliding block 306 can generate relative movement, avoiding the phenomenon of the entire mechanism getting stuck during shell opening.

[0059] like Figures 14-15 As shown, the flipping mechanism 6 mainly consists of a flipping box 601, a first fixed base 602, a flange 603, a shaft-shaped member 604, and a seventh driving member 605 (motor). The first fixed base 602 is mounted on the frame. The flipping box 601 is rotatably mounted on the first fixed base 602 via the flange 603 located on its side wall and the shaft-shaped member 604 connected to the flange 603. The driving end of the seventh driving member 605 is connected to one of the shaft-shaped members 604 passing through the first fixed base 602, and is used to drive the flipping box 601 to rotate relative to the shaft-shaped member 604.

[0060] Preferably, the top, bottom, and front faces of the flip box 601 are all open (overall U-shaped), and the top and bottom faces have inwardly folded edges 601a. ​​The flip box 601 can be flipped so that the front opening faces upward at a certain angle to easily receive oyster shells (meatless oyster shells 1401 or meaty oyster shells 1402) conveyed from the conveying mechanism 13. The slotted design on the top and bottom faces of the flip box 601 covers approximately 80% of the oyster's planar projected area, and the folded edges 601a on both sides of the slots serve as limiting elements.

[0061] like Figures 14-15As shown, the meat-retrieving mechanism 7 includes a lifting drive assembly 7a, a horizontal drive assembly 7b, and a meat-retrieving assembly 7c. The lifting drive assembly 7a is mounted on the frame, the horizontal drive assembly 7b is mounted on the lifting drive assembly, and the meat-retrieving assembly 7c is mounted on the horizontal drive assembly 7b. The lifting drive assembly 7a includes an eighth drive component (motor, not shown) and a screw and nut transmission module 701. The horizontal drive assembly 7b includes a ninth drive component 702 and a gear and rack transmission module 703. The meat-retrieving assembly 7c includes a mounting base 704, a tightening module, and a meat-retrieving blade 705. The tightening module includes a fourth sliding block 706, a tenth drive component 707, and a tightening bracket 708. The screw and nut transmission module 701 is mounted on the frame and is poweredly connected to the eighth drive component. The ninth drive component 702 is mounted on the screw and nut transmission module 701 and drives it. The end is powered by the gear and rack transmission module 703. The mounting base 704 is mounted on the gear and rack transmission module 703. The fourth sliding block 706 is slidably mounted on the mounting base 704. The mounting base 704 has a seventh sliding groove 704a that is limited and matched with the fourth sliding block 706. The meat-removing blades 705 are a pair, and their second ends are respectively fixedly mounted on the pair of fourth sliding blocks 706. The tenth driving member 707 is mounted on the mounting base 704 and its driving end is connected to the tightening bracket 708. The two ends of the tightening bracket 708 are respectively hinged to the pair of fourth sliding blocks 706. The meat-removing assembly 7c can reach the designated meat-removing position under the joint drive of the lifting driving assembly 7a and the horizontal driving assembly 7b. The heads of the pair of meat-removing blades 705 can move closer to each other under the drive of the tenth driving member 707 to complete the specific meat-removing action.

[0062] like Figure 14 As shown, the sorting mechanism 10 includes an eleventh driving member 1001 and a sorting plate 1002. The sorting plate is rotatably mounted on the frame. The driving end of the eleventh driving member 1001 is connected to the sorting plate 1002, and the eleventh driving member 1001 can drive the sorting plate 1002 to rotate.

[0063] The working principle of meat extraction and sorting is as follows: After the oyster shells are opened, they are conveyed to the flipping box 601 via the conveyor mechanism 13. The identification mechanism 9 detects whether the white side (i.e., the inside) of the oyster shell is facing down. If it is facing up, the seventh drive component 605 drives the flipping box 601 to rotate so that the white side of the oyster shell faces down. If the white side of the oyster shell entering the flipping box 601 is facing down, there is no need to flip it and the next step is performed directly. Then, the identification mechanism 9 detects whether there is oyster meat 1403 in the oyster shell with the white side facing down and the specific location of the oyster meat 1403. If the identified oyster shell is a meaty oyster shell 1402, the eleventh drive component 1001 drives the sorting plate 1002 to rotate a certain angle. Then, the lifting drive component 7a and the horizontal drive component 7b drive the meat-removing component 7c to a position directly below the oyster meat 1403. Then, the tightening module works to tighten the heads of a pair of meat-removing blades 705, removing the oyster meat 1403. The removed oyster meat 1403 falls on the sorting plate 1002 and can fall into the oyster collection box 8 along the curved surface of the sorting plate 1002. Then, the eleventh drive component 1001 drives the sorting plate 1002 to reset, and the seventh drive component 605 drives the flipping box 601 to flip, pouring the oyster shells into the oyster shell collection box 11.

[0064] If the identified oyster shell is a meatless oyster shell 1401, the seventh driving component 605 drives the flipping box 601 to flip, directly pouring the meatless oyster shell 1401 into the oyster shell collection box 11.

[0065] The present invention cleverly combines the meat-removing mechanism 7 and the sorting mechanism 10, resulting in a more streamlined structure, thereby reducing manufacturing costs, material consumption, and overall machine space.

[0066] The typical automated operation process of this invention is as follows: S1: Feeding and Sieving. The oysters 14 to be processed are poured in batches into the feed inlet 101 of the sieving mechanism 1. The first drive component 1045 is activated, driving the eccentrically mounted drive rod 1044 to rotate, which in turn causes the entire shell 102 to vibrate up and down via the first connecting rod 1043 and connecting rod shaft 1041. Under the vibration, the oysters 14 slide downwards along the inclined surface formed by multiple rollers 105. The limiting curved surface 106 on one side guides and limits the oysters, ensuring that they are discharged one by one and orderly from the discharge port and fall into the feed end of the conveying mechanism 13.

[0067] S2: Conveying and Straightening. The conveying mechanism 13 is activated, conveying the oysters 14 in a lying position (i.e., the length direction is parallel to the conveying direction) forward. When the oyster 14 passes the first sensor 203 of the straightening mechanism 2, the sensor sends a signal. The second drive unit 201 drives the straightening hand 204 to quickly extend through the first transmission assembly 202, pressing against the side of the front end of the oyster 14 and turning it into an upright position (i.e., the length direction is perpendicular to the conveying direction), and then the straightening hand 204 retracts.

[0068] S3: Pushing and Clamping. The aligned oyster 14 continues to move with the conveying mechanism 13. When it reaches the preset position in front of the clamping mechanism 4 and is detected by the second sensor 1208, the fourth drive member 1201 of the pushing mechanism 12 activates, driving the first linear guide 1207 and the first pusher 1202 mounted on one end forward via gear and rack transmission (first gear 1205 and first rack 1204), smoothly pushing the upright oyster 14 into the working area of ​​the clamping mechanism 4 (i.e., between a pair of clamping modules). Subsequently, the third drive member 401 of the clamping mechanism 4 is activated, driving the first screw 402 to rotate. The first sliding block 403, threadedly engaged with the first screw 402, moves towards the fixed first fixing block 404. The shell of the oyster 14 first contacts the toothed clamping surface of the three-stage clamping block 407. As the clamping force increases, the oyster is stably clamped under the guidance of the figure-eight clamping surface. The multi-stage rotatable clamping block structure can adapt to the irregular shape of the oyster and at the same time generate downward pressure to prevent it from tilting upward.

[0069] S4: Shell Cutting and Opening. After the oyster is reliably clamped, the fifth drive component 501 of the cutting mechanism 5 is activated, pushing the third sliding block 504 forward along the fourth slide groove 502a of the fixed plate 502. The third sliding block 504 drives a pair of cutting blades 506 to move, causing the sliding shaft 505 connected to the tail of the cutting blades to move along the fifth slide groove 503a of the slide plate 503. When the sliding shaft 505 moves to the inclined section at the end of the fifth slide groove 503a where they approach each other, the front ends of the pair of cutting blades 506 are forced to come together, cutting off part of the oyster shell at the front end of the oyster like scissors. After the shell cutting is completed, the cutting mechanism 5 resets.

[0070] Next, the sixth drive component 301 of the shell-opening mechanism 3 is activated, driving the second connecting rod 302 to rotate. The second connecting rod 302 pushes or pulls the guide rod 304 up and down within the second fixed block 305 via the third connecting rod 303. The lower end of the guide rod 304 drives the shell-opening knife holder 307 to rotate around its hinge point with the third fixed block 309 via the second sliding block 306. This causes the shell-opening knife 308, fixed on the shell-opening knife holder 307, to extend into the notched oyster shell gap and pry upwards to open the oyster shell. During the shell-opening process, the second sliding block 306 can move relative to the sixth sliding groove 307a of the shell-opening knife holder 307, providing cushioning and preventing rigid jamming. After the shell-opening is completed, the shell-opening mechanism 3 resets.

[0071] S5: Pushing out and conveying. After the oysters are opened, the clamping mechanism 4 releases them. The fourth drive component 1201 of the pushing mechanism 12 actuates again, but this time it drives the first linear guide 1207 to move in the opposite direction, causing the second pusher 1203 installed at its other end to move forward, pushing the opened oysters (now divided into meatless oyster shells 1401 and meaty oyster shells 1402) out of the clamping station and back into the conveying mechanism 13. Since the front end of the oyster shell contacts the conveying surface first when pushed out, its posture will change back to lying flat (parallel to the conveying direction). The conveying mechanism 13 conveys the oyster shells towards the flipping mechanism 6.

[0072] S6: Flipping and Recognition. Oyster shells slide from the end of the conveyor mechanism 13 and enter the flipping box 601 of the flipping mechanism 6. The recognition mechanism 9 (industrial camera) photographs and recognizes the oyster shells in the flipping box 601: First, it determines whether the white inner surface of the oyster shell is facing down. If it is facing up, it controls the seventh drive unit 605 to drive the flipping box 601 to flip 180° so that the white inner surface is facing down; if it is already facing down, it remains stationary. Next, the recognition mechanism 9 again identifies whether there is oyster meat 1403 attached to the oyster shell with the white inner surface facing down, and accurately marks the position coordinates of the oyster meat 1403 (especially the projection position of its adductor muscle on the plane).

[0073] S7: Meat Extraction and Sorting. Branching operations are performed based on the identification results: If the oyster shell 1401 is identified as meatless, the seventh drive unit 605 directly drives the flipping box 601 to flip forward, pouring the meatless oyster shell 1401 into the oyster shell collector 11 below.

[0074] If an oyster shell 1402 is identified as containing meat, the system controls the eleventh drive component 1001 of the sorting mechanism 10 to rotate the sorting plate 1002 by an angle, forming a guide slope facing the oyster meat collector 8. Simultaneously, the meat extraction mechanism 7 begins operation: the eighth drive component of the lifting drive assembly 7a drives the entire horizontal drive assembly 7b and the meat extraction assembly 7c to move vertically via the screw and nut transmission module 701; the ninth drive component 702 of the horizontal drive assembly 7b drives the meat extraction assembly 7c to move horizontally via the gear and rack transmission module 703; the two work together to precisely position the meat extraction assembly 7c directly below the identified oyster meat 1403 (so that the head of the meat extraction blade 705 is below the adductor muscle). After positioning, the tenth drive component 707 of the meat extraction assembly 7c drives the tightening bracket 708 to rotate, thereby moving the pair of meat extraction blades 705, causing their heads to tighten together, like tweezers, to clamp the oyster meat 1403 from the shell (cutting the adductor muscle connection) and hold it. Then, the meat-removing mechanism 7 can be slightly lifted or moved to ensure that the oyster meat is completely removed from the oyster shell. The removed oyster meat 1403 falls naturally onto the tilted sorting plate 1002 and slides down its slope into the oyster meat collector 8. After the meat removal is completed, the meat-removing mechanism 7 resets, and the tenth drive member 707 moves in the opposite direction to open the meat-removing blade 705. Subsequently, the eleventh drive member 1001 of the sorting mechanism 10 drives the sorting plate 1002 to reset to horizontal or initial angle. Finally, the seventh drive member 605 of the flipping mechanism 6 drives the flipping box 601 to flip forward, pouring the empty oyster shells 1402 with the meat removed into the oyster shell collector 11.

[0075] S8: Cycle. The equipment repeats steps S1 to S7 to achieve continuous and automated oyster opening and meat extraction.

[0076] 1. High degree of automation and safety: It realizes the full mechanization and automation of the entire process from feeding, sorting, aligning, clamping, shell cutting, shell opening, identification, meat extraction to classification and collection, completely replacing dangerous and heavy manual operations, eliminating the risk of operators being cut, and greatly improving production safety.

[0077] 2. Excellent adaptability and stability: The vibration and curved surface limiting design of the screening mechanism ensures smooth and sequential conveying of oysters. The multi-stage rotatable adaptive design of the clamping mechanism can effectively clamp oysters of different sizes and irregular shapes, providing reliable fixation and laying the foundation for subsequent precision operations.

[0078] 3. High processing quality and excellent hygiene: The cutting mechanism uses a scissor-like cutting method to cleanly and neatly cut the front end of the oyster shell, avoiding the debris contamination of the oyster meat caused by traditional knocking or crushing methods. The meat-removing mechanism, combined with visual recognition and precise motion, can remove the oyster meat intact with minimal damage. Full automation reduces human contact, significantly lowering the risk of microbial contamination and ensuring product hygiene.

[0079] 4. Ingenious structural design and high reliability: The shell-opening mechanism utilizes a linkage mechanism to amplify force, generating sufficient prying force with relatively low motor power, and the movement trajectory is precise. The U-shaped box design of the tilting mechanism can both receive materials and tilt them, serving multiple purposes. The sliding groove design in each mechanism (such as the shearing mechanism and shell-opening mechanism) effectively avoids jamming during movement, improving the reliability of equipment operation.

[0080] 5. Intelligent recognition and precise control: The integrated industrial vision system can intelligently determine the oyster shell posture, the presence or absence of oyster meat, and the location of the oyster meat, and guide the meat-removing mechanism to perform precise spatial positioning and operation, realizing intelligent sorting and processing based on machine vision.

[0081] 6. High system integration and controllable cost: The entire equipment has a compact layout and smooth connections between functional modules. It prioritizes motor drive and mechanical transmission (screw, connecting rod, gear rack, etc.), which reduces the purchase and maintenance costs of the compressed air system compared to solutions relying on numerous pneumatic components, resulting in a simpler overall structure and lower manufacturing costs.

[0082] In summary, this invention discloses an automatic oyster shell-opening and meat-extracting device. The device includes a frame and mounted on it a screening mechanism, a leveling mechanism, a shell-opening mechanism, a clamping mechanism, a cutting mechanism, a flipping mechanism, a meat-extracting mechanism, an oyster meat collector, an identification mechanism, a classification mechanism, an oyster shell collector, a pushing mechanism, and a conveying mechanism. The device achieves orderly feeding through screening and leveling; it stably clamps oysters of different shapes through an adaptive clamping mechanism; the cutting mechanism first cuts the front shell, then the shell-opening mechanism pries it open; finally, after identification, the meat-extracting mechanism accurately extracts the meat, and the classification mechanism automatically sorts and collects the shell and meat. This invention achieves full automation of the oyster shell-opening and meat-extracting process, offering advantages such as high efficiency, good safety, strong adaptability, and ensuring the integrity and hygiene of the oyster meat. It solves the problems of high risk and low efficiency of manual operation and the poor adaptability of existing automated equipment.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic oyster shell-opening and meat-extracting device, characterized in that, At least including: frame; The sorting mechanism (1) is located on the frame and is used to output single oysters (14); A conveying mechanism (13) is provided on the frame, and the inlet (101) is connected to the outlet of the screening mechanism (1); A straightening mechanism (2) is provided on the frame and located along the conveying mechanism (13) to straighten the oysters (14) into a preset posture; A clamping mechanism (4) is provided on the frame for clamping and fixing oysters (14); A cutting mechanism (5) is provided on the frame and adjacent to the clamping mechanism (4) for cutting off the front shell of the clamped oyster (14); The shell-opening mechanism (3) is located on the frame and adjacent to the clamping mechanism (4) for prying open the cut oyster (14); A pushing mechanism (12) is provided on the frame for pushing the oysters (14) on the conveying mechanism (13) into the clamping mechanism (4) and pushing out the shells of the oysters (14) after they have been opened. A flipping mechanism (6) is provided on the frame and corresponds to the discharge port of the conveying mechanism (13) for receiving and accommodating oyster (14) shells; The identification mechanism (9) is located on the frame and is set in relation to the flipping mechanism (6) for identifying the posture of the oyster shell (14) and whether oyster meat (1403) is attached to it. The meat extraction mechanism (7) is located on the frame and is configured corresponding to the flipping mechanism (6) for extracting oyster meat (1403) from the oyster shell according to the identification result; A sorting mechanism (10) is provided on the frame and located below the flipping mechanism (6); Oyster meat collector (8) and oyster shell collector (11) are provided on the frame and respectively corresponding to the sorting mechanism (10).

2. The automatic oyster shell opening and meat extraction device according to claim 1, characterized in that, The screening mechanism (1) includes a housing (102), a vibration assembly (104), multiple parallel rollers (105) forming an inclined transport surface, and limiting curved surfaces (106) on both sides of the transport surface. The vibration assembly (104) drives the housing (102) to vibrate so that the oysters (14) slide downward along the transport surface and are output one by one guided by the limiting curved surfaces (106).

3. The automatic oyster shell opening and meat extraction device according to claim 1, characterized in that, The clamping mechanism (4) includes a drive component and an adaptive clamping component; The drive assembly includes a third drive element (401) and a first screw (402) connected to its drive end; The adaptive clamping assembly includes a first sliding block (403) movably fitted onto the first screw (402), a first fixing block (404) fixedly fitted onto the first screw (402), and a pair of clamping modules respectively mounted on the first sliding block (403) and the first fixing block (404) and cooperating with each other; Each of the clamping modules includes a primary clamping block (405), a secondary clamping block (406), and a tertiary clamping block (407) that are rotatably connected in sequence; The clamping surface of the three-level clamping block (407) is provided with a toothed structure (407b), and a clamping space that is narrow at the top and wide at the bottom is formed between the clamping surfaces of a pair of clamping modules.

4. The automatic oyster shell opening and meat extraction device according to claim 3, characterized in that, The bottom of the first-stage clamping block (405) is slidably engaged with the first sliding groove on the first sliding block (403) or the first fixed block (404) via a first sliding member. The bottom of the second-stage clamping block (406) is slidably engaged with the second sliding groove on the first-stage clamping block (405) via a second sliding member (406a). The bottom of the third-stage clamping block (407) is slidably engaged with the third sliding groove (406b) on the second-stage clamping block (406) via a third sliding member (407a).

5. The automatic oyster shell opening and meat extraction device according to claim 1, characterized in that, The shearing mechanism (5) includes a fifth drive member (501), a mounting bracket, and a shearing assembly driven by the fifth drive member (501); The mounting bracket includes a fixing plate (502) and a sliding plate (503), and the sliding plate (503) has a pair of fifth sliding grooves (503a) with their ends close to each other; The cutting assembly includes a pair of cutting blades (506) with their front ends cross-hinged, and the tail of each cutting blade (506) is connected to a sliding shaft (505) that slides in cooperation with the fifth sliding groove (503a). The fifth driving member (501) drives the shear blades (506) to move, so that when the sliding shaft (505) moves to the end along the fifth slide groove (503a), the front ends of the pair of shear blades (506) come close to each other to complete the cutting.

6. The automatic oyster shell opening and meat extraction device according to claim 1, characterized in that, The shell opening mechanism (3) includes a sixth driving component (301), a third transmission component, and a shell opening component; The third transmission assembly includes a second connecting rod (302), a third connecting rod (303), and a guide rod (304) that are hinged in sequence, with the middle of the guide rod (304) movably fitted onto a fixed block; The shell opening assembly includes a third fixing block (309) mounted on the frame, a shell opening blade holder (307) hinged to the third fixing block (309), a second sliding block (306) movably mounted on the shell opening blade holder (307), and a shell opening blade (308) fixed to the shell opening blade holder (307). The end of the guide rod (304) is connected to the second sliding block (306) to drive the shell-opening knife holder (307) to rotate around its hinge point, so that the shell-opening knife (308) extends into the oyster shell gap and prys it open.

7. The automatic oyster shell opening and meat extraction device according to claim 6, characterized in that, The third transmission assembly further includes a second fixed block (305), and the middle part of the guide rod (304) is movably fitted onto the second fixed block (305), so that the guide rod (304) can move up and down relative to the second fixed block (305) under the drive of the third connecting rod (303). The shell-opening knife (308) holder (307) is provided with a sixth sliding groove (307a), and the second sliding block (306) is limited to the sixth sliding groove (307a).

8. The automatic oyster shell opening and meat extraction device according to any one of claims 1-7, characterized in that, The flipping mechanism (6) includes a flipping box (601) that can be flipped and a seventh driving member (605) that drives the flipping box (601) to flip. The upper and lower end faces and the front end face of the flipping box (601) are all open and the upper and lower end faces are provided with inwardly folded edges (601a).

9. The automatic oyster shucking and meat extraction device according to any one of claims 1-7, characterized in that, The meat-removing mechanism (7) includes a lifting drive assembly (7a), a horizontal drive assembly (7b) disposed on the lifting drive assembly (7a), and a meat-removing assembly (7c) disposed on the horizontal drive assembly (7b). The meat extraction assembly (7c) includes a mounting base (704), a fourth sliding block (706) disposed on the mounting base (704), a pair of meat extraction blades (705) hinged to the fourth sliding block (706), and a tightening module that drives the heads of the pair of meat extraction blades (705) to move closer or further apart from each other.

10. The automatic oyster shell opening and meat extraction device according to any one of claims 1-7, characterized in that, The sorting mechanism (10) includes a rotatable sorting plate (1002) and an eleventh driving member (1001) that drives the sorting plate (1002) to rotate. The sorting plate (1002) rotates to different angles according to the identification results to guide the oyster meat (1403) into the oyster meat collector (8) or to make the oyster shell fall into the oyster shell collector (11).

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