An automatic shelling machine and shelling method for sea shrimp adaptive positioning

Abstract

The present application relates to the technical field of shrimp peeling machine, and discloses a shrimp adaptive positioning automatic peeling machine and a peeling method, which comprises a peeling unit, a feeding unit and a conveying belt arranged on one side of the peeling unit, and a flattening assembly is installed at the other end of the conveying belt, and the flattening assembly and the conveying belt are arranged on one side of the feeding unit; the present application drives the backing plate and the cutter to be lifted through the threaded pipe, so that the cutter is cut off from the tendon at an inclination angle of 15-30 degrees, the C-shaped bending constraint of the shrimp is released, the shrimp can keep a flat state in the subsequent peeling process, the positioning deviation problem caused by the bending of the shrimp in the existing equipment is solved, and the peeling efficiency and the product quality are improved; at the same time, the threaded pipe drives the tooth plate to rise through the connecting rod, drives the gear and the rotating rod to rotate, so that the fixed plate forms a V-shaped placing cavity and cooperates with the flexible silica gel pad layer to clamp the shrimp, and the stability of the shrimp in the tendon cutting process is improved.

Description

Technical Field

[0001] This invention relates to the field of shrimp peeling machine technology, and particularly to an automatic shrimp peeling machine and peeling method with adaptive positioning. Background Technology

[0002] Sea shrimp, also known as red shrimp, crimson shrimp, or large green shrimp, is a general term for the meat or whole body of shrimp found in aquatic and marine environments. Sea shrimp are rich in nutrients, have a delicious flavor, and can be used in cooking and as a medicinal ingredient. They are mainly distributed in the Yellow Sea, Bohai Sea, and sea areas north of the Yangtze River estuary, and are a specialty of China. After harvesting, sea shrimp are sold in various ways, including selling live shrimp or selling shrimp meat after removing the heads and shells. The shelling process typically involves a large amount of manual labor, which is very slow and cannot handle large quantities of sea shrimp.

[0003] An existing patent (publication number: CN120584881A) discloses an automatic shrimp peeling machine and its peeling method, which includes a peeling mechanism and a conveying mechanism. The peeling mechanism is equipped with a clamping component and a peeling component. The clamping component achieves adaptive clamping through flexible clamping pads and tension springs, while the peeling component completes efficient peeling through the coordinated action of peeling blades and elastic pressure strips. The conveying mechanism adopts a limiting plate and anti-slip conveyor belt design, which can be flexibly adjusted to accommodate shrimp of different sizes and prevent displacement. In addition, the equipment is also equipped with shock-absorbing pads and protective covers to improve operational stability and safety.

[0004] Although this application can solve the problems of existing equipment having complex structure, poor adaptability, and easy damage to shrimp meat, significantly improving peeling efficiency and finished product quality, while reducing maintenance costs, after thawing, especially for shrimp products that have undergone flash freezing, the abdominal flexor muscles that contract due to low temperature stimulation still retain strong elasticity and contraction tension, and the shrimp body is in a naturally curved C-shaped posture. This curved shape makes it difficult for the clamping mechanism of this application to grasp the central axis of the shrimp body, causing the clamping components to easily deviate during the clamping process, which in turn causes the peeling blade to deviate in the cutting position. This not only affects peeling efficiency, but may also damage the shrimp meat due to excessive squeezing or improper cutting depth. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic shelling machine and shelling method for shrimp with adaptive positioning, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic shelling machine for adaptive positioning of sea shrimp, comprising a shelling unit and a feeding unit and a conveyor belt disposed on one side of the shelling unit, wherein a flattening component is installed at the other end of the conveyor belt, and both the flattening component and the conveyor belt are disposed on one side of the feeding unit. The flattening assembly includes a housing disposed on one side of the conveyor belt, with a transmission chamber inside the housing. A pad is disposed inside the transmission chamber, and a connecting plate is hinged to one end of the pad. A cutter is fixed on the upper surface of the pad, with the blade facing the conveyor belt's conveying direction and the blade forming an inclination angle of 15°-30° with the upper surface of the pad. The blade height is 1 / 3-1 / 2 of the pad thickness. The cutter is used to cut the tendons of the shrimp from the abdomen.

[0007] Preferably, a rotary motor is fixed to the inner wall of the transmission chamber, a threaded rod is fixed to the output end of the rotary motor, a threaded tube is threadedly connected to the surface of the threaded rod, the upper end of the threaded tube is hinged to the lower surface of the pad, and the pad and the cutter move inside the transmission chamber through the rotary motor, the threaded rod and the threaded tube.

[0008] Preferably, a sprocket is fixed to the surface of the threaded rod, and there are two sets of the threaded rod, sprocket, threaded tube and pad. The lower end of the other threaded rod is rotatably connected inside the transmission chamber. The two threaded rods are connected by a sprocket and a chain drive. The upper end of the other threaded tube is hinged to the lower surface of the corresponding pad, and the two threaded tubes are symmetrically arranged on both sides of the connecting plate.

[0009] Preferably, a connecting rod is fixed to the side of the threaded tube, and a toothed plate is fixed to the other end of the connecting rod. Both the connecting plate and the toothed plate are in contact with the inner wall of the transmission chamber. A rotating rod is rotatably connected to the inner wall of the transmission chamber. A fixing plate and a gear are fixed to the surface of the rotating rod. The toothed plate and the gear mesh with each other. The rotating rod and the fixing plate are positioned above the connecting plate. A flexible silicone pad is pasted on the inner side wall of the fixing plate, and the surface of the flexible silicone pad is provided with anti-slip texture.

[0010] Preferably, there are two rotating rods and two fixing plates. The fixing plates are inclined and the two fixing plates are inclined in opposite directions. The lower ends of the two fixing plates are attached to each other to form a V-shaped placement cavity for placing shrimp. The opening direction of the placement cavity corresponds to the conveying direction of the conveyor belt. A transition plate is also fixed to the side of the conveyor belt. The transition plate is arc-shaped and inclined. The high end of the transition plate is connected to the discharge port of the conveyor belt, and the low end of the transition plate extends to the top of the placement cavity.

[0011] Preferably, the connecting plate is hinged to two pads at both ends. The connecting plate is conical in shape, with the tip of the connecting plate facing the end of the conveyor belt. The inclined surfaces on both sides of the connecting plate smoothly transition to the upper surface of the corresponding pads. A support plate is also fixed to the inner wall of the transmission chamber. A top plate is fixed to the surface of the support plate. The support plate and the top plate are located below the connecting plate. The upper end of the top plate has a conical surface corresponding to the connecting plate. The lower surface of the connecting plate can overlap the upper end of the top plate.

[0012] Preferably, a linear module is installed on the top of the housing, and a push plate is fixed to the moving end of the linear module. The push plate reciprocates linearly in the horizontal direction under the drive of the linear module. The push plate is used to push the shrimp in the flattening component to the feeding unit. The front edge of the push plate is rounded. The linear module is any one of a ball screw slide module, a gear and rack slide module, or a synchronous belt slide module.

[0013] The present invention also provides a shelling method for an automatic shelling machine with adaptive positioning for shrimp, comprising the following steps; Step 1: Place the shrimp to be peeled evenly on the feed end of the conveyor belt, ensuring that the shrimp's belly is facing up and its back is facing down. After the conveyor belt starts, it will transport the shrimp towards the flattening component at a set speed. Step 2: After the shrimp move to the end of the conveyor belt, they slide down through the arc transition plate into the V-shaped placement cavity of the flattening component. The inclined fixing plates on both sides guide the shrimp, so that the shrimp fall into the placement cavity with their abdomen down and their back up. Step 3: The rotary motor starts, driving one set of threaded rods to rotate. Through the transmission of the sprocket and chain, it drives the other set of threaded rods to rotate synchronously. The threaded tube rises along the axial direction of the threaded rods, pushing the two side pads to rotate upwards around the hinge axis with the connecting plate. This causes the cutter to cut the tendons at a 15°-30° angle from symmetrical positions on both sides of the shrimp's abdomen. At the same time, the threaded tube drives the toothed plate to rise through the connecting rod, driving the gear and rotating rod to rotate. This brings the upper ends of the two fixed plates closer together, and the flexible silicone pads clamp the shrimp's back to prevent it from shifting during the cutting process. Step 4: After the tendon is cut, the rotary motor reverses, the threaded rod drives the threaded tube to descend, the pad and cutter are reset, the toothed plate drives the gear to reverse as the threaded tube descends, the upper end of the fixed plate releases the shrimp, and the lower ends of the two fixed plates come together to limit the shrimp. At this time, the linear module drives the push plate to move forward and pushes the stretched shrimp from the V-shaped placement cavity to the feeding unit. Step 5: The feeding unit receives the flattened shrimp and transports them to the shelling unit. The shelling unit peels the shrimp that are in a straight position, thus separating the shrimp meat from the shell.

[0014] The technical effects and advantages of this invention are as follows: This invention uses a threaded tube to lift a pad and a cutter, allowing the cutter to sever the tendons from the shrimp's abdomen at a 15°-30° angle. This releases the shrimp's C-shaped curvature, ensuring it remains straight during subsequent peeling. This solves the positioning misalignment problem caused by the shrimp's curvature in existing equipment, thereby improving peeling efficiency and product quality. Simultaneously, the threaded tube, through a connecting rod, lifts a toothed plate, driving a gear and a rotating rod to rotate. This creates a V-shaped placement cavity on the fixing plate, which, along with a flexible silicone pad, clamps the shrimp, improving stability during tendon severing and preventing shaking or flipping. This further enhances the accuracy of the flattening process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an automatic shelling machine for adaptive positioning of sea shrimp according to the present invention; Figure 2 This is a side sectional view of the flattening component in an automatic shrimp self-adaptive positioning peeling machine of the present invention. Figure 3 This is a front sectional view of the flattening component in an automatic shrimp self-adaptive positioning peeling machine of the present invention. Figure 4 This invention relates to an automatic shrimp peeling machine with adaptive positioning. Figure 3 Enlarged view of point A in the middle; Figure 5 This is an exploded view of the flattening component in an automatic shrimp self-adaptive positioning peeling machine according to the present invention.

[0016] In the diagram: 1. Shelling unit; 2. Feeding unit; 3. Conveyor belt; 4. Flattening assembly; 401. Housing; 402. Transmission chamber; 403. Rotary motor; 404. Threaded rod; 405. Threaded pipe; 406. Pad; 407. Connecting plate; 408. Cutter; 409. Sprocket; 410. Connecting rod; 411. Toothed plate; 412. Rotating rod; 413. Fixing plate; 414. Gear; 415. Support plate; 416. Top plate; 5. Linear module; 6. Push plate; 7. Transition plate. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1

[0019] This invention provides, for example Figures 1 to 5 The automatic shelling machine for adaptive positioning of sea shrimp shown includes a shelling unit 1, a feeding unit 2 and a conveyor belt 3 arranged on one side of the shelling unit 1, and a flattening component 4 installed at the other end of the conveyor belt 3. The flattening component 4 and the conveyor belt 3 are both arranged on one side of the feeding unit 2. The flattening assembly 4 includes a housing 401 disposed on one side of the conveyor belt 3. A transmission chamber 402 is provided inside the housing 401, and a pad 406 is disposed inside the transmission chamber 402. A connecting plate 407 is hinged to one end of the pad 406. A cutter 408 is fixed to the upper surface of the pad 406. The blade of the cutter 408 faces the conveying direction of the conveyor belt 3, and the blade forms an inclination angle of 15°-30° with the upper surface of the pad 406. The height of the blade is 1 / 3-1 / 2 of the thickness of the pad 406. 408 is used to cut the tendons of the shrimp from the abdomen. The free end of the pad 406 is lifted upward, which drives the cutter 408 fixed on the pad 406 to tilt upward in sync. Since the blade of the cutter 408 forms an inclination angle of 15°-30° with the upper surface of the pad 406, and the blade height is 1 / 3-1 / 2 of the thickness of the pad 406, the cutter 408 can cut the tendons of the shrimp from the abdomen, which maintain strong tension due to low temperature contraction, thereby relieving the natural curvature constraint of the shrimp's body and allowing the shrimp body to gradually stretch out from the C-shaped posture.

[0020] A rotary motor 403 is fixed to the inner wall of the transmission chamber 402. A threaded rod 404 is fixed to the output end of the rotary motor 403. A threaded tube 405 is threadedly connected to the surface of the threaded rod 404. The upper end of the threaded tube 405 is hinged to the lower surface of the pad 406. The pad 406 and the cutter 408 move inside the transmission chamber 402 through the rotary motor 403, the threaded rod 404, and the threaded tube 405. The rotary motor 403 drives the threaded rod 404 to rotate, which drives the threaded tube 405 to move axially along the threaded rod 404. Then, through the hinge point between the threaded tube 405 and the pad 406, the pad 406 is pushed to rotate around the hinge axis between the threaded tube 405 and the connecting plate 407. This adjusts the angle of the pad 406 and the cutter 408. The tilt angle and height of the cutter 408 can be flexibly adjusted according to the size, species, and degree of tendon contraction of the shrimp, so that the cutter 408 can cut the tendons while avoiding excessive damage to the shrimp meat.

[0021] In addition, a sprocket 409 is fixed to the surface of the threaded rod 404. There are two sets of threaded rod 404, sprocket 409, threaded tube 405 and pad 406. The lower end of another threaded rod 404 is rotatably connected to the inside of the transmission chamber 402. The two threaded rods 404 are connected by a chain drive through the sprocket 409. The upper end of another threaded tube 405 is hinged to the lower surface of the corresponding pad 406. The two threaded tubes 405 are symmetrically arranged on both sides of the connecting plate 407. When the rotary motor 403 drives one set of threaded rods 404 to rotate, the transmission action of the sprocket 409 and the chain can drive the other set of threaded rods 404 to rotate synchronously, so that the two threaded tubes 405 can rise and fall synchronously. This, in turn, drives the pads 406 symmetrically arranged on both sides of the connecting plate 407 to rotate synchronously. This allows the cutters 408 on both sides to cut the tendons from symmetrical positions on both sides of the shrimp's abdomen, avoiding the shrimp from shifting during the cutting process due to unilateral force, and improving the stability and symmetry of the tendon cutting effect.

[0022] A connecting rod 410 is fixed to the side of the threaded tube 405, and a toothed plate 411 is fixed to the other end of the connecting rod 410. Both the connecting plate 407 and the toothed plate 411 are in contact with the inner wall of the transmission chamber 402. A rotating rod 412 is rotatably connected to the inner wall of the transmission chamber 402. A fixing plate 413 and a gear 414 are fixed to the surface of the rotating rod 412. The toothed plate 411 and the gear 414 mesh with each other. The rotating rod 412 and the fixing plate 413 are positioned above the connecting plate 407. A flexible silicone pad is pasted on the inner side wall of the fixing plate 413, and the surface of the flexible silicone pad is provided with anti-slip texture. When the threaded tube 405 moves upward under the drive of the threaded rod 404, the toothed plate 411 rises synchronously through the connecting rod 410. The toothed plate 411 meshes with the gear 414. The rise of the toothed plate 411 drives the gear 414 to rotate, which in turn drives the rotating rod 412 and the fixed plate 413 fixed on the surface of the rotating rod 412 to rotate synchronously. At this time, the upper ends of the two fixed plates 413 gradually approach each other until the flexible silicone pads on their inner walls adhere to both sides of the shrimp's back. Utilizing the elasticity of the flexible silicone pads and the anti-slip texture on the surface, the shrimp is positioned and held without damaging the shell and meat, preventing the shrimp from shaking or flipping during the process of the cutter 408 cutting the tendons. At the same time, the flexible silicone pads can also buffer the impact force when the shrimp slips, thereby preventing the shrimp from shifting its posture or being damaged due to collision.

[0023] In addition, there are two rotating rods 412 and two fixed plates 413. The fixed plates 413 are both inclined and the two fixed plates 413 are inclined in opposite directions. The lower ends of the two fixed plates 413 are attached to each other to form a V-shaped placement cavity for placing shrimp. The opening direction of the placement cavity corresponds to the conveying direction of the conveyor belt 3. A transition plate 7 is also fixed on the side of the conveyor belt 3. The transition plate 7 is arc-shaped and inclined. The high end of the transition plate 7 is connected to the discharge port of the conveyor belt 3. The low end of the transition plate 7 extends to the top of the placement cavity. After the shrimp are conveyed to the end by the conveyor belt 3, they can slide smoothly into the V-shaped placement cavity formed by the lower ends of the two fixed plates 413 by the arc-shaped and inclined transition plate 7. At the same time, the inclined fixed plates 413 on both sides also guide and limit the shrimp, so that the shrimp can enter the placement cavity with the abdomen down and the back up, so that the cutter 408 can accurately act on the tendon position of the shrimp's abdomen.

[0024] The connecting plate 407 is hinged to two pads 406 at both ends. The connecting plate 407 is conical in shape, with its tip pointing towards the end of the conveyor belt 3. The inclined surfaces on both sides of the connecting plate 407 smoothly transition to the upper surfaces of the corresponding pads 406. A support plate 415 is also fixed to the inner wall of the transmission chamber 402. A top plate 416 is fixed to the surface of the support plate 415. The support plate 415 and the top plate 416 are located below the connecting plate 407. The upper end of the top plate 416 has a conical surface corresponding to the connecting plate 407. The lower surface of the connecting plate 407 can overlap the upper end of the top plate 416. The two ends of the connecting plate 407 are hinged to the two pads 406 respectively. The connecting plate 407 is conical in shape, and the tip of the connecting plate 407 faces the end of the conveyor belt 3. The inclined surfaces on both sides of the connecting plate 407 smoothly transition to the upper surface of the corresponding pads 406. The inner wall of the transmission chamber 402 is also fixed with a support plate 415. A top plate 416 is fixed on the surface of the support plate 415. The support plate 415 and the top plate 416 are located below the connecting plate 407. The upper end of the top plate 416 has a conical surface corresponding to the connecting plate 407. The lower surface of the connecting plate 407 can overlap the upper end of the top plate 416.

[0025] It should be noted that a linear module 5 is installed on the top of the housing 401. A push plate 6 is fixed to the moving end of the linear module 5. The push plate 6 reciprocates linearly in the horizontal direction under the drive of the linear module 5. The push plate 6 is used to push the shrimp in the flattening component 4 to the feeding unit 2. The front edge of the push plate 6 is rounded. The linear module 5 is any one of a ball screw slide module, a gear 414 rack slide module, or a synchronous belt slide module. After the flattening component 4 completes the cutting of the shrimp tendons and flattening of the posture, the linear module 5 drives the push plate 6 to move forward. The push plate 6 applies a uniform thrust in the horizontal direction to push the stretched shrimp from the V-shaped placement cavity of the flattening component 4 to the feeding unit 2. At the same time, the rounded corner at the front end of the push plate 6 can prevent scratches or compression deformation of the shrimp body.

[0026] When in use, first place the device in a suitable position, then manually place the thawed and headless shrimp on the conveyor belt 3 with the shrimp's belly facing the transition plate 7. Then, the conveyor belt 3 starts to transport the shrimp to the transition plate 7. Under its own gravity, the shrimp slides down the arc-shaped transition plate 7 into the V-shaped placement cavity of the flattening component 4. At this time, the V-shaped structure formed by the two fixing plates 413 initially limits the shrimp, and the anti-slip texture on the surface of the flexible silicone pad can prevent the shrimp from sliding in the placement cavity.

[0027] Next, the rotary motor 403 starts, driving the threaded rod 404 to rotate. The threaded rod 404 can drive another threaded rod 404 set on one side to rotate synchronously through the sprocket 409 and the chain, so that the threaded tube 405 moves upward on the surface of the threaded rod 404 (because the threaded tube 405 has a connecting rod 410 fixed on its side, and a toothed plate 411 fixed on the other end of the connecting rod 410, and the connecting plate 407 and the toothed plate 411 are both in contact with the inner wall of the transmission chamber 402, the threaded tube 405 can move up and down in the vertical direction during the rotation of the threaded rod 404). The threaded tube 405 first pushes the pad 406 and the connecting plate 407 hinged to one end of the pad 406 to rise synchronously. During the upward movement of the threaded tube 405, the connecting rod 410 and the toothed plate 411 fixed on its side can be driven to move upward. Since the toothed plate 411 meshes with the gear 414, it can drive the rotating rod 412 to rotate, so that the two fixed plates 413 gradually retract upward, thereby clamping the shrimp in the placement cavity.

[0028] During the clamping process of the fixing plate 413, as the pad plate 406 and the connecting plate 407 continue to rise, the connecting plate 407 can lift the shrimp from below its abdomen before the fixing plate 413 clamps it, thus preventing the shrimp from bending excessively due to its own weight. When the fixing plate 413 initially clamps the shrimp, the connecting plate 407 stops moving due to the pressure from the shrimp's abdomen, while the pad plate 406 continues to rise under the push of the threaded tube 405. Since the pad plate 406 is hinged to the connecting plate 407, the pad plate 406 will flip upward about the hinge point with the connecting plate 407. At this time, the cutter 408 fixed on the upper surface of the pad plate 406 flips synchronously with the pad plate 406. The blade gradually cuts into the shrimp's abdomen from below at an angle of 15°-30°, thereby severing the tendons connecting the abdominal flexor muscles. After the tendons are severed, the C-shaped posture formed by the contraction of the flexor muscles of the shrimp is relieved, and the shrimp body begins to straighten.

[0029] After flattening, the rotary motor 403 reverses, driving the threaded rod 404 to rotate in the opposite direction. The threaded tube 405 drives the pad 406 and the toothed plate 411 to move downward. The fixed plate 413 returns to its initial position under the action of the gear 414 and the toothed plate 411. Then, the linear module 5 drives the push plate 6 to push the flattened shrimp from the placement cavity to the feeding unit 2, and then transports it to the shelling unit 1 for subsequent shelling via the feeding unit 2.

[0030] Example 2

[0031] The present invention also provides a shelling method for an automatic shelling machine with adaptive positioning for shrimp, comprising the following steps; Step 1: Place the shrimp to be peeled evenly on the feed end of the conveyor belt 3, ensuring that the shrimp's belly is facing up and its back is facing down. After the conveyor belt 3 starts, it will transport the shrimp towards the flattening component 4 at a set speed. Step 2: After the shrimp move to the end of the conveyor belt 3, they slide down through the arc transition plate 7 into the V-shaped placement cavity of the flattening component 4. The inclined fixing plates 413 on both sides guide the shrimp so that the shrimp fall into the placement cavity with their abdomen down and their back up. Step 3: The rotary motor 403 starts, driving one set of threaded rods 404 to rotate. Through the transmission of the sprocket 409 and the chain, it drives the other set of threaded rods 404 to rotate synchronously. The threaded tube 405 rises along the axial direction of the threaded rods 404, pushing the two side pads 406 to rotate upward around the hinge axis with the connecting plate 407, so that the cutter 408 cuts the tendons from the symmetrical positions on both sides of the shrimp's abdomen at an angle of 15°-30°. At the same time, the threaded tube 405 drives the toothed plate 411 to rise through the connecting rod 410, driving the gear 414 and the rotating rod 412 to rotate, so that the upper ends of the two fixed plates 413 are brought closer to each other, and the shrimp's back is clamped by the flexible silicone pad to prevent it from shifting during the cutting process. Step 4: After the tendon is cut, the rotary motor 403 reverses, the threaded rod 404 drives the threaded tube 405 to descend, the pad 406 and the cutter 408 reset, the toothed plate 411 drives the gear 414 to reverse as the threaded tube 405 descends, the upper end of the fixing plate 413 releases the shrimp, and the lower ends of the two fixing plates 413 come together to limit the shrimp. At this time, the linear module 5 drives the push plate 6 to move forward and push the stretched shrimp from the V-shaped placement cavity to the feeding unit 2. Step 5: The feeding unit 2 receives the flattened shrimp and transports them to the shelling unit 1. The shelling unit 1 performs the shelling operation on the flat shrimp to separate the shrimp meat from the shell.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic shelling machine for adaptive positioning of sea shrimp, comprising a shelling unit (1) and a feeding unit (2) and a conveyor belt (3) disposed on one side of the shelling unit (1), characterized in that: A flattening component (4) is installed at the other end of the conveyor belt (3), and both the flattening component (4) and the conveyor belt (3) are located on one side of the feeding unit (2); The flattening assembly (4) includes a housing (401) disposed on one side of the conveyor belt (3). A transmission chamber (402) is provided inside the housing (401). A pad (406) is provided inside the transmission chamber (402). A connecting plate (407) is hinged to one end of the pad (406). A cutter (408) is fixed on the upper surface of the pad (406). The blade of the cutter (408) faces the conveying direction of the conveyor belt (3), and the blade of the cutter (408) forms an inclination angle of 15°-30° with the upper surface of the pad (406). The blade height of the cutter (408) is 1 / 3-1 / 2 of the thickness of the pad (406). The cutter (408) is used to cut the tendons of the shrimp from the abdomen.

2. The automatic shelling machine for adaptive positioning of shrimp according to claim 1, characterized in that: A rotary motor (403) is fixed to the inner wall of the transmission chamber (402). A threaded rod (404) is fixed to the output end of the rotary motor (403). A threaded tube (405) is threaded to the surface of the threaded rod (404). The upper end of the threaded tube (405) is hinged to the lower surface of the pad (406). The pad (406) and the cutter (408) move inside the transmission chamber (402) through the rotary motor (403), the threaded rod (404) and the threaded tube (405).

3. The automatic shelling machine for adaptive positioning of shrimp according to claim 2, characterized in that: A sprocket (409) is fixed on the surface of the threaded rod (404). There are two sets of the threaded rod (404), sprocket (409), threaded tube (405) and pad (406). The lower end of the other threaded rod (404) is rotatably connected inside the transmission chamber (402). The two threaded rods (404) are connected by a chain drive through the sprocket (409). The upper end of the other threaded tube (405) is hinged to the lower surface of the corresponding pad (406). The two threaded tubes (405) are symmetrically arranged on both sides of the connecting plate (407).

4. The automatic shelling machine for adaptive positioning of shrimp according to claim 2, characterized in that: A connecting rod (410) is fixed to the side of the threaded tube (405), and a toothed plate (411) is fixed to the other end of the connecting rod (410). The connecting plate (407) and the toothed plate (411) are both in contact with the inner wall of the transmission chamber (402). A rotating rod (412) is rotatably connected to the inner wall of the transmission chamber (402). A fixing plate (413) and a gear (414) are fixed to the surface of the rotating rod (412). The toothed plate (411) and the gear (414) mesh with each other. The rotating rod (412) and the fixing plate (413) are arranged above the connecting plate (407). A flexible silicone pad is pasted on the inner side wall of the fixing plate (413), and the surface of the flexible silicone pad is provided with anti-slip texture.

5. The automatic shelling machine for adaptive positioning of shrimp according to claim 4, characterized in that: There are two rotating rods (412) and two fixing plates (413). The fixing plates (413) are inclined and the two fixing plates (413) are inclined in opposite directions. The lower ends of the two fixing plates (413) are attached to each other to form a V-shaped placement cavity for placing shrimp. The opening direction of the placement cavity corresponds to the conveying direction of the conveyor belt (3). A transition plate (7) is also fixed on the side of the conveyor belt (3). The transition plate (7) is arc-shaped and inclined. The high end of the transition plate (7) is connected to the discharge port of the conveyor belt (3). The low end of the transition plate (7) extends to the top of the placement cavity.

6. The automatic shelling machine for adaptive positioning of shrimp according to claim 3, characterized in that: The connecting plate (407) is hinged to two pads (406) at both ends. The connecting plate (407) is conical in shape, and the tip of the connecting plate (407) faces the end of the conveyor belt (3). The inclined surfaces on both sides of the connecting plate (407) smoothly transition to the upper surface of the corresponding pad (406). The inner wall of the transmission chamber (402) is also fixed with a support plate (415). A top plate (416) is fixed on the surface of the support plate (415). The support plate (415) and the top plate (416) are located below the connecting plate (407). The top plate (416) has a conical surface corresponding to the connecting plate (407) at its upper end. The lower surface of the connecting plate (407) can overlap the upper end of the top plate (416).

7. The automatic shelling machine for adaptive positioning of sea shrimp according to claim 1, characterized in that: A linear module (5) is installed above the housing (401). A push plate (6) is fixed to the moving end of the linear module (5). The push plate (6) moves in a reciprocating linear motion in the horizontal direction under the drive of the linear module (5). The push plate (6) is used to push the shrimp in the flattening component (4) to the feeding unit (2). The front edge of the push plate (6) is rounded. The linear module (5) is any one of a ball screw slide module, a gear (414) rack slide module, or a synchronous belt slide module.

8. A shell-peeling method for an automatic shell-peeling machine with adaptive positioning for sea shrimp, applicable to the automatic shell-peeling machine with adaptive positioning for sea shrimp as described in any one of claims 1-7, characterized in that, Includes the following steps; Step 1: Place the shrimp to be peeled evenly on the feed end of the conveyor belt (3), ensuring that the shrimp's belly is facing up and its back is facing down. After the conveyor belt (3) is started, it will transport the shrimp towards the flattening component (4) at a set speed. Step 2: After the shrimp moves to the end of the conveyor belt (3), it slides down through the arc transition plate (7) into the V-shaped placement cavity of the flattening component (4). The inclined fixing plates (413) on both sides guide the shrimp so that the shrimp falls into the placement cavity with its belly down and its back up. Step 3: The rotary motor (403) is started, driving one set of threaded rods (404) to rotate, and through the transmission of the sprocket (409) and the chain, it drives the other set of threaded rods (404) to rotate synchronously. The threaded tube (405) rises along the axial direction of the threaded rods (404), pushing the two side pads (406) to rotate upward around the hinge axis with the connecting plate (407), so that the cutter (408) cuts the tendons from the symmetrical positions on both sides of the shrimp's abdomen at an angle of 15°-30°. At the same time, the threaded tube (405) drives the toothed plate (411) to rise through the connecting rod (410), driving the gear (414) and the rotating rod (412) to rotate, so that the upper ends of the two fixed plates (413) are close to each other, and the shrimp's back is clamped by the flexible silicone pad to prevent it from shifting during the cutting process. Step 4: After the tendon is cut, the rotary motor (403) reverses, the threaded rod (404) drives the threaded tube (405) to descend, the pad (406) and the cutter (408) reset, the toothed plate (411) drives the gear (414) to reverse as the threaded tube (405) descends, the upper end of the fixing plate (413) releases the shrimp, and the lower ends of the two fixing plates (413) come together to limit the shrimp. At this time, the linear module (5) drives the push plate (6) to move forward and push the stretched shrimp from the V-shaped placement cavity to the feeding unit (2). Step 5: The feeding unit (2) receives the flattened shrimp and transports them to the shelling unit (1). The shelling unit (1) performs shelling on the flat shrimp to separate the shrimp meat from the shell.

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