Asparagus lettuce leaf removing, harvesting and bundling all-in-one machine

Abstract

The lettuce leaf removing, harvesting and bundling all-in-one machine comprises a machine frame, a leaf removing device used for removing lettuce leaves is installed at the front end of the machine frame, and a cutting device used for cutting lettuce is arranged on the discharging side of the leaf removing device; the machine frame is further provided with a conveying device used for conveying the cut asparagus lettuces to a bundling position and a bundling device used for bundling the asparagus lettuces, a quality screening device is arranged between the conveying device and the bundling device, and when the quality of the asparagus lettuces is not qualified, the quality screening device prevents the asparagus lettuces from entering the bundling device. The quality screening device disclosed by the invention can automatically screen out unqualified asparagus lettuces, so that the unqualified asparagus lettuces cannot be mixed into the finally bundled finished products, and the qualification rate of the final finished products is improved; besides, the unqualified asparagus lettuces are screened out before bundling, so that the manual detection time is shortened during subsequent packaging, and the asparagus lettuce collection efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery and equipment, and particularly to a one - machine for removing leaves, harvesting, and bundling lettuce. Background Art

[0002] Lettuce, also known as asparagus lettuce, is a variant of the lettuce species in the Compositae family Lactuca that can form fleshy tender stems, and is an annual or biennial herbaceous plant. The main part for consumption is the fleshy tender stem, which can be eaten raw, in cold salads, stir - fried, dried, or pickled, and the tender leaves can also be eaten. Lettuce has strong adaptability and can be cultivated in spring and autumn or overwinter, with spring cultivation being the main method and summer harvest.

[0003] Currently, lettuce is a widely planted and consumed vegetable and has an important position globally. With the continuous advancement of agricultural modernization and the improvement of the level of agricultural mechanization, the planting scale of lettuce has gradually expanded, so the demand for lettuce harvesters is also increasing day by day.

[0004] At present, mechanized operations have been implemented for the plowing and transplanting of lettuce cultivation in China. However, most of the planted lettuce is still harvested manually or with small and simple trolleys. There are problems such as low - efficiency harvesting methods, high labor intensity, and a cumbersome leaf - removing process, which cannot meet the needs of modern agricultural production. In addition, the quality inspection of the harvested lettuce mostly relies on manual inspection, which is not only inefficient but also prone to missed inspections and misinspections, resulting in sub - standard lettuce being mixed into the finished products and affecting the quality of the final products.

[0005] Therefore, it is very necessary to design a lettuce harvester that can operate fully automatically and can perform quality screening. Summary of the Invention

[0006] In order to solve the technical problems of the current low - efficiency lettuce harvesting method and the heavy reliance on manual inspection for lettuce quality inspection, resulting in unguaranteed quality and low harvesting efficiency, the present invention proposes a one - machine for removing leaves, harvesting, and bundling lettuce.

[0007] The present invention is realized by the following technical solutions: A one - machine for removing leaves, harvesting, and bundling lettuce includes a frame. A leaf - removing device for removing lettuce leaves is installed at the front end of the frame. A cutting device for cutting lettuce is provided on the discharge side of the leaf - removing device. The frame is also equipped with a transportation device for transporting the cut lettuce to the bundling position and a bundling device for bundling the lettuce. A quality screening device is arranged between the transportation device and the bundling device. When the quality of the lettuce is unqualified, the quality screening device blocks the lettuce from entering the bundling device; The quality screening device includes a blocking structure for preventing lettuce from entering the bundling device. The blocking structure is electrically connected to an automatic recognition system, which is used to identify the quality of lettuce and control the blocking structure to extend when it identifies that the quality of the lettuce is unqualified.

[0008] By adopting the above technical solutions, it is possible to automatically screen out lettuce with unqualified quality, so that the finally bundled finished products will not be mixed with lettuce with unqualified quality, improving the qualified rate of the final finished products. Secondly, since the lettuce with unqualified quality has been screened out before bundling, the time for manual inspection in subsequent packaging is reduced, improving the efficiency and quality of lettuce collection. In addition, for the all-in-one machine proposed in this application, before cutting the lettuce, the operation of removing the leaves is carried out first, which can not only prevent the lettuce leaves from winding around the rotating blade, ensure smooth and accurate cutting, avoid jamming, but also prevent the lettuce leaves from mixing into the roots of the lettuce during cutting, improving the cutting quality. At the same time, the whole process from leaf removal, harvesting to bundling is fully automated, saving manual operation time and reducing labor intensity, and improving production efficiency.

[0009] For the above-mentioned all-in-one lettuce leaf removal, harvesting and bundling machine, the blocking structure includes a baffle and a sliding mechanism for driving the baffle to extend or retract.

[0010] For the above-mentioned all-in-one lettuce leaf removal, harvesting and bundling machine, the automatic recognition system includes: An image acquisition module, which is used to acquire image data of lettuce. A data processing center, which integrates AI algorithms and deep learning algorithms. The data processing center is electrically connected to the image acquisition module and is used to process the acquired image data and output a recognition result. A control module, which is electrically connected to the data processing center. The control module is used to receive the recognition result and control the blocking structure to extend or retract according to the recognition result.

[0011] For the above-mentioned all-in-one lettuce leaf removal, harvesting and bundling machine, an arc-shaped plate is provided at the top of the baffle. The arc-shaped plate is integrally connected to the baffle, and the arc-shaped plate is provided with an arc-shaped surface so that the lettuce can smoothly enter the bundling device when the baffle retracts.

[0012] A lettuce leaf-removing, harvesting and bundling integrated machine as described above, wherein the leaf-removing device includes a first pulley and a second pulley arranged obliquely. Both the first pulley and the second pulley are equipped with leaf-removing drums for removing lettuce leaves, and a first driving mechanism for driving the rotation of the leaf-removing drums to remove leaves. The leaf-removing drums are provided with a plurality of bristles, and the plurality of bristles are arranged spirally along the leaf-removing drums. The spiraling directions of the bristles arranged spirally along the leaf-removing drums on the first pulley and the second pulley are opposite.

[0013] A lettuce leaf-removing, harvesting and bundling integrated machine as described above, wherein the leaf-removing device further includes a moving structure for controlling the up and down movement of the first pulley and the second pulley. The moving structure includes a telescopic rod and a connecting rod connected to the telescopic rod. The connecting rod is arranged between the first pulley and the second pulley, and one end of the telescopic rod is also connected with a second driving mechanism for driving its telescopic movement.

[0014] A lettuce leaf-removing, harvesting and bundling integrated machine as described above, wherein the cutting device includes a rotating blade for cutting lettuce and a third driving mechanism for driving the rotation of the rotating blade to cut. The cutting device is further provided with a partition board and a rotating structure for cooperating with the partition board to stabilize the position of the lettuce. After cutting, the rotating structure is also used to push the lettuce to the conveying device; The rotating structure includes a rotating shaft and a plurality of rotating plates. The plurality of rotating plates are arranged circumferentially along the rotating shaft. The rotating structure further includes a control mechanism for controlling the rotation of the rotating shaft.

[0015] A lettuce leaf-removing, harvesting and bundling integrated machine as described above, wherein the conveying device includes an inclined conveyor belt and a power structure for providing power for the conveyor belt to convey lettuce. The conveyor belt is provided with a plurality of ridges, and the plurality of ridges are arranged at intervals. Grooves are formed between adjacent ridges to increase the friction force for lettuce conveying; The power structure includes a driving pulley and bearings arranged at the top and bottom of the conveyor belt. The bearing at the top of the conveyor belt is sleeved with a driven pulley. The driving pulley and the driven pulley are connected by a synchronous belt, and the driving pulley is connected with a fourth driving mechanism for driving its rotation.

[0016] A lettuce leaf-removing, harvesting and bundling integrated machine as described above, wherein the bundling device includes a rotating toothed disk and a gear meshed with the rotating toothed disk. The gear is connected with a fifth driving mechanism for driving its rotation. The rotating toothed disk is provided with a packing film fixing frame for fixing the packing film and a tensioning rod for stretching and tensioning the packing film. The bundling device further includes a clamping mechanism for clamping the packing film after stretching and tensioning and a cutting mechanism for cutting the packing film after bundling is completed.

[0017] An integrated lettuce leaf-removing, harvesting and bundling machine as described above, the frame is further equipped with: A collection device, which includes a first collection box arranged before the bundling device for collecting qualified-quality lettuce, and a second collection box arranged below the quality screening device for collecting unqualified-quality lettuce; A traveling device, which is a crawler installed on both sides of the frame, and the traveling device is used to provide driving force for the equipment.

[0018] Compared with the prior art, an integrated lettuce leaf-removing, harvesting and bundling machine proposed by the present invention has the following beneficial effects: 1. The quality screening device proposed by the present invention can automatically screen out unqualified-quality lettuce, so that unqualified-quality lettuce will not be mixed into the final bundled products, improving the qualification rate of the final products; in addition, since the unqualified-quality lettuce has been screened out before bundling, the time for manual inspection is reduced during subsequent packaging, improving the efficiency and quality of lettuce collection.

[0019] 2. For the integrated machine proposed by the present invention, before cutting the lettuce, the leaf-removing operation is first performed, which can avoid the entanglement of lettuce leaves on the rotating blade, ensure smooth and accurate cutting, avoid jamming, and also avoid the mixing of lettuce leaves into the lettuce roots during cutting, improving the cutting quality; at the same time, from leaf-removing, harvesting to bundling, it is all fully automated operation, saving manual operation time and reducing labor intensity, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments.

[0021] Figure 1 It is a three-dimensional structure diagram of the present invention; Figure 2 It is a three-dimensional structure diagram of another perspective of the present invention; Figure 3 It is a side view structure diagram of the present invention; Figure 4 It is a leaf-removing and cutting structure diagram of the present invention; Figure 5 It is a structure diagram of the leaf-removing device of the present invention; Figure 6 It is a structure diagram of another perspective of the leaf-removing device of the present invention; Figure 7 It is a structure diagram of the cutting device of the present invention; Figure 8 It is a transportation and bundling structure diagram of the present invention; Figure 9Schematic side view structure of the transportation and bundling of the present invention; Figure 10 Schematic structure diagram of the transportation device of the present invention; Figure 11 Schematic structure diagram of the quality screening device of the present invention; Figure 12 Block diagram of the automatic identification system of the present invention; Figure 13 Schematic structure diagram of the bundling device of the present invention; Figure 14 Another perspective schematic structure diagram of the bundling device of the present invention; Figure 15 Another perspective schematic structure diagram of the bundling device of the present invention; Figure 16 Another perspective schematic structure diagram of the bundling device of the present invention; Figure 17 Schematic structure diagram of the traveling device of the present invention. Detailed implementation manners

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Specific embodiments, in combination with Figures 1 to 17 As shown, the technical solution of the present invention is further described. A lettuce leaf-removing, harvesting and bundling integrated machine includes a frame 1. A leaf-removing device 10 for removing lettuce leaves is installed at the front end of the frame 1. A cutting device 20 for cutting lettuce is provided on the discharge side of the leaf-removing device 10. A transportation device 30 for transporting the cut lettuce to the bundling position and a bundling device 40 for bundling the lettuce are also installed on the frame 1. A quality screening device 50 is provided between the transportation device 30 and the bundling device 40. When the quality of the lettuce is unqualified, the quality screening device 50 blocks the lettuce from entering the bundling device 40.

[0024] In this embodiment, the quality screening device can automatically screen out the lettuce with unqualified quality, so that the finally bundled products will not be mixed with the lettuce with unqualified quality, improving the qualified rate of the final products; secondly, since the lettuce with unqualified quality has been screened out before bundling, the time for manual inspection is reduced during subsequent packaging, improving the efficiency and quality of lettuce collection; In addition, for the all-in-one machine proposed in this application, before cutting the lettuce, the operation of removing the leaves is carried out first, which can avoid the entanglement of the lettuce leaves on the rotating blade, ensure smooth and precise cutting, avoid jamming, and also prevent the lettuce leaves from mixing into the lettuce roots during cutting, improving the cutting quality. At the same time, the operations from leaf removal, harvesting to bundling are all fully automated, saving manual operation time, reducing labor intensity, and improving production efficiency.

[0025] Further, as a preferred implementation manner rather than a limitation of this solution, the quality screening device 50 includes a blocking structure 51 for blocking the lettuce from entering the bundling device 40. The blocking structure 51 is electrically connected to an automatic recognition system 52, and the automatic recognition system 52 is used to identify the quality of the lettuce and control the blocking structure 51 to extend when the quality of the lettuce is identified as unqualified.

[0026] In this embodiment, the automatic recognition system can accurately judge the quality of the lettuce, and when the quality of the lettuce is identified as unqualified, it controls the blocking structure to extend, screening out the unqualified lettuce, eliminating the need for manual screening, reducing labor intensity, ensuring the quality of lettuce collection, improving the qualification rate of the final product, and reducing losses caused by quality problems.

[0027] As a preferred implementation manner, the blocking structure 51 includes a baffle 511 and a sliding mechanism 512 for driving the baffle 511 to extend or retract.

[0028] As a more preferred implementation manner, an arc-shaped plate 513 is provided at the top of the baffle 511. The arc-shaped plate 513 is integrally connected to the baffle 511, and the arc-shaped plate 513 is provided with an arc-shaped surface 514 so that the lettuce can smoothly enter the bundling device 40 when the baffle 511 retracts.

[0029] In this embodiment, the design of the arc-shaped plate can play a buffering role, and the arc-shaped surface on the arc-shaped plate provides a smooth guiding surface for the lettuce, avoiding friction and collision between the lettuce and the bundling device. That is, it can enable the qualified lettuce to enter the bundling device smoothly and unobstructedly, and also reduce the risk of damage to the surface of the lettuce, helping to maintain the appearance and quality of the lettuce.

[0030] Alternatively, the sliding mechanism 512 is a sliding wheel.

[0031] As a preferred implementation, the automatic identification system 52 includes an image acquisition module 521, a data processing center 522, and a control module 523. The image acquisition module 521 is used to acquire image data of lettuce. The data processing center 522 integrates AI algorithms and deep learning algorithms. The data processing center 522 is electrically connected to the image acquisition module 521, and is used to process the acquired image data and output an identification result. The control module 523 is electrically connected to the data processing center 522. The control module 523 is used to receive the identification result and control the blocking structure 51 to extend or retract according to the identification result.

[0032] Specifically, before the lettuce is transported to the bundling device 40 for bundling, the image acquisition module 521 first acquires the image data of the lettuce and transmits the acquired image data to the data processing center 522. The data processing center 522 uses its own data processing model integrated with AI algorithms and deep learning algorithms to process the acquired image data, determines whether the lettuce has quality-affecting conditions such as yellowing or blackening, obvious cracking, or rotting, and outputs the final identification result. The control module 523 performs corresponding control actions according to the received identification result. For example, if the received identification result is that the quality of the lettuce is unqualified, the control module 523 outputs a first control instruction to make the sliding mechanism 512 slide forward to drive the baffle 511 to extend and block the unqualified lettuce; if the received identification result is that the quality of the lettuce is qualified, the control module 523 outputs a second control instruction to make the sliding mechanism 512 slide backward to drive the baffle 511 to retract, so that the qualified lettuce can smoothly enter the bundling device 40 for bundling.

[0033] It can be understood that the above data processing model is obtained by training in advance through AI algorithms and deep learning algorithms, and can accurately process the acquired image data to obtain accurate identification results. The specific model training principle and steps are prior art and will not be elaborated in this embodiment.

[0034] In addition, as a supplementary explanation, the data processing center 522 of this embodiment is implemented based on the Huawei Cloud ModelArts platform. The Huawei Cloud ModelArts platform is an end-to-end artificial intelligence (AI) development platform provided by Huawei, aiming to help developers and enterprises quickly build, deploy, and manage AI applications.

[0035] In this embodiment, the data processing center can accurately identify whether there are quality defects such as yellowing, blackening, cracks or rot in the lettuce images obtained by the image acquisition module through the AI algorithm and deep learning algorithm integrated in itself, ensuring that only lettuce with qualified quality can be bundled, improving the quality of lettuce collection; in addition, due to the integration of the AI algorithm and deep learning algorithm, the data processing model can be continuously learned and optimized, improving the recognition accuracy and making the quality screening more accurate and reliable.

[0036] Alternatively, the image acquisition module 521 for acquiring lettuce images may include, but is not limited to, a photographic device or a 3D laser scanner. Preferably, considering the possibility of rain in the actual working scenario in this embodiment, an F9 high-definition 1080P camera with a waterproof function is selected. In actual applications, corresponding replacements can be made according to actual needs, and no specific limitations are set in this embodiment.

[0037] Alternatively, the control module 523 can be implemented by a main controller, such as an MCU (Microcontroller Unit), a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array), an SOC (System On Chip), etc.

[0038] Further, as a preferred implementation manner rather than a limitation of this solution, the leaf removal device 10 includes a first pulley 11 and a second pulley 12 that are inclined. Both the first pulley 11 and the second pulley 12 are equipped with a leaf removal drum 13 for removing lettuce leaves, and a first driving mechanism 14 for driving the rotation of the leaf removal drum 13 for leaf removal. A plurality of bristles 131 are provided on the leaf removal drum 13, and the plurality of bristles 131 are spirally arranged along the leaf removal drum 22. The spiral directions of the bristles 131 spirally arranged along the leaf removal drum 13 on the first pulley 11 and the second pulley 12 are opposite; Among them, pulleys 16 for providing a supporting force for the leaf removal drum 13 are installed at the bottoms of the first pulley 11 and the second pulley 12. The spiral angle of the plurality of bristles 131 spirally arranged along the leaf removal drum 22 is 50° - 70°. Preferably, the spiral angle of the plurality of bristles 131 spirally arranged along the leaf removal drum 22 proposed in this embodiment is 60°.

[0039] Alternatively, the bristles 131 are made of nylon, and the diameter of a single bristle 131 is preferably 0.5 mm, and the length of the bristle is preferably 30 mm.

[0040] Alternatively, the first driving mechanism 14 may include, but is not limited to, a driving motor, a servo motor, or a stepping motor, and no specific limitation is made herein in this embodiment.

[0041] In this embodiment, the leaf removing device uses the bristles on the leaf removing drum to rotate for leaf removing, which improves the leaf removing efficiency; secondly, the bristles are arranged spirally along the leaf removing drum, and can form a continuous spiral motion when the leaf removing drum rotates, removing the leaves of the lettuce from different angles to ensure that the lettuce leaves can be completely removed; the bristles are made of nylon material, which can avoid scratching the surface of the lettuce while ensuring the leaf removing effect.

[0042] As a preferred embodiment, the leaf removing device 10 further includes a moving structure 15 for controlling the up and down movement of the first pulley 11 and the second pulley 12. The moving structure 15 includes a telescopic rod 151 and a connecting rod 152 connected to the telescopic rod 151. The connecting rod 152 is arranged between the first pulley 11 and the second pulley 12, and one end of the telescopic rod 151 is further connected to a second driving mechanism 153 for driving its telescopic movement.

[0043] Specifically, when the height of the lettuce is relatively high, the second driving structure 153 drives the telescopic rod 151 to retract. When the telescopic rod 151 retracts, the first pulley 11 and the second pulley 12 are pulled to slide backward synchronously through the connecting rod 26, so that the inclination angle between the first pulley 11 and the second pulley 12 and the frame 1 becomes smaller, realizing leaf removing for the lettuce with a relatively high height; when the height of the lettuce is relatively low, the second driving structure 153 drives the telescopic rod 151 to extend. When the telescopic rod 151 extends, the first pulley 11 and the second pulley 12 are pushed to slide forward synchronously through the connecting rod 26, so that the inclination angle between the first pulley 11 and the second pulley 12 and the frame 1 becomes larger, realizing leaf removing for the lettuce with a relatively low height.

[0044] In this embodiment, the moving structure changes the inclination angle by moving the first pulley and the second pulley, so that the leaf removing device can perform leaf removing treatment on lettuces of different heights, meeting the working requirements or environmental requirements that the leaf removing device can adapt to different situations; secondly, the design of the connecting rod makes the first pulley and the second pulley a whole and can move synchronously, avoiding instability caused by the height difference of the lettuces and making the leaf removing process smoother.

[0045] Alternatively, the second driving structure 153 may include, but is not limited to, a driving motor, a servo motor, or a stepping motor, and no specific limitation is made herein in this embodiment.

[0046] Further, as a preferred implementation manner rather than a limitation of this solution, the cutting device 20 includes a rotary blade 21 for cutting lettuce and a third driving mechanism 22 for driving the rotary blade 21 to rotate and cut. The cutting device 20 is further provided with a partition plate 23 and a rotating mechanism 24 that cooperates with the partition plate 23 to stabilize the position of the lettuce. After cutting, the rotating mechanism 24 is further used to push the lettuce onto the conveying device 30.

[0047] As a relatively preferred implementation manner, the rotating mechanism 24 includes a rotating shaft 241 and a plurality of rotating plates 242. The plurality of rotating plates 242 are arranged circumferentially along the rotating shaft 241. The rotating mechanism 24 further includes a control mechanism 243 for controlling the rotation of the rotating shaft 241.

[0048] Specifically, when cutting lettuce, the rotating plate 242 adjusts the angle and position of the lettuce, and the cooperation between the partition plate 23 and the rotating plate 242 limits the movement space of the lettuce, ensuring that the lettuce does not move randomly left and right during the cutting process; after cutting, the rotating plate 242 rotates backward to push the cut lettuce backward into the conveying device 30, enabling the conveying device 30 to transport the cut lettuce to the subsequent process.

[0049] In this embodiment, the rotating plate cooperates with the partition plate to adjust the position of the lettuce and limits the movement space of the lettuce, avoiding the shaking or deviation of the lettuce during cutting, ensuring stable position during cutting, thus avoiding the problems of uneven or inclined cutting, and further reducing the damage to the lettuce during the cutting process, improving the cutting quality of the lettuce; secondly, after cutting, the rotating plate can also push the cut lettuce onto the conveying device, realizing the seamless connection between cutting and conveying, and improving the production efficiency.

[0050] Optionally, the number of the rotating plates 242 is preferably four.

[0051] Optionally, the third driving mechanism 22 may include, but is not limited to, a driving motor, a servo motor, or a stepping motor, and this embodiment does not make specific limitations here.

[0052] Optionally, the control mechanism 243 may include, but is not limited to, a driving motor, a servo motor, or a stepping motor, and this embodiment does not make specific limitations here.

[0053] Further, as a preferred implementation manner rather than a limitation of this solution, the conveying device 30 includes an inclined conveyor belt 31 and a power structure 32 that provides power for the conveyor belt 31 to convey lettuce. A plurality of convex strips 311 are provided on the conveyor belt 31. The plurality of convex strips 311 are arranged at intervals, and grooves 312 are formed between adjacent convex strips 311 to increase the friction force for transporting lettuce.

[0054] As a preferred embodiment, the power structure 32 includes a driving pulley 321 and bearings 322 arranged at the top and bottom of the conveyor belt 31. A driven pulley 323 is sleeved on the bearing 322 at the top of the conveyor belt 31. The driving pulley 321 and the driven pulley 323 are connected by a synchronous belt 324, and the driving pulley 321 is connected to a fourth driving mechanism 325 for driving its rotation.

[0055] Specifically, when the fourth driving mechanism 325 controls the driving pulley 321 to rotate, the driving pulley 321 drives the driven pulley 323 to rotate synchronously through the synchronous belt 324. The bearing 322 at the top of the conveyor belt 31 will also rotate synchronously with the rotation of the driven pulley 323, so that the conveyor belt 31 will also rotate synchronously with the rotation of the bearing 322, realizing that the conveyor belt can transport lettuce.

[0056] In this embodiment, a plurality of convex strips are provided on the conveyor belt, and grooves are formed between adjacent convex strips. On the one hand, the contact area and friction between the lettuce and the conveyor belt are increased, effectively preventing the lettuce from shifting during transportation and ensuring stability during transportation. On the other hand, it also enables the conveyor belt to transport lettuce of different shapes and sizes; In addition, the design of using the driving pulley to drive the driven pulley to rotate through the synchronous belt to realize the transportation of lettuce by the conveyor belt enables the conveyor belt to move the lettuce smoothly and over a long distance, while maintaining high transportation efficiency and reliability.

[0057] Alternatively, the fourth driving mechanism 325 may include, but is not limited to, a driving motor, a servo motor, or a stepping motor, and this embodiment does not make specific limitations here.

[0058] As a preferred embodiment, the transportation device 30 further includes a protection mechanism 33. The protection mechanism 33 includes protection plates 331 arranged on both sides of the conveyor belt 31 to prevent the lettuce from falling off the conveyor belt 31 during transportation.

[0059] In this embodiment, the protection plates on both sides of the conveyor belt can prevent the lettuce from falling due to vibration, collision, or angle change during transportation, improving the stability during transportation; secondly, it can also prevent the lettuce from falling and getting stuck between the conveyor belt and the equipment components, reducing the risk of equipment damage and lowering the maintenance cost.

[0060] Further, as a preferred implementation manner of this solution rather than a limitation, the bundling device 40 includes a rotating tooth disc 41 and a gear 42 meshed with the rotating tooth disc 41. The gear 42 is connected to a fifth driving mechanism 43 for driving its rotation. The rotating tooth disc 41 is provided with a packaging film fixing frame 411 for fixing the packaging film 2 and a tensioning rod 412 for stretching and tensioning the packaging film 2. The bundling device 40 further includes a clamping mechanism 44 for clamping the packaging film 2 after stretching and tensioning and a cutting mechanism 45 for cutting the packaging film 2 after bundling is completed.

[0061] Alternatively, the fifth driving mechanism 43 may include, but is not limited to, a driving motor, a servo motor or a stepping motor, and no specific limitation is made here in this embodiment.

[0062] In this embodiment, the bundling device can firmly bundle the lettuce together, keep the lettuce neat during transportation, reduce damage caused by looseness or insecure packaging, and can also appropriately adjust the number of rotation circles of the rotating tooth disc according to the shape and size of the lettuce to achieve bundling of different specifications of lettuce; the design of the tensioning rod enables the packaging film to be in a stretched and tensioned state during the bundling process, making the packaging film more firm and tight when winding around the lettuce for bundling.

[0063] As a preferred implementation manner, the clamping mechanism 44 includes a clamping rod 441 and a sixth driving mechanism 442 for driving the clamping rod 441 to clamp the packaging film 2.

[0064] As a preferred implementation manner, the cutting mechanism 45 includes a serrated knife 451 and an electromagnetic push rod 452 for extending the serrated knife 451. One end of the electromagnetic push rod 452 is connected to a seventh driving mechanism 453 for driving its telescopic movement.

[0065] Specifically, during packaging, the packaging film 2 is pre-fixed on the packaging film fixing frame 411. Then, the starting end of the packaging film 2 first winds around the tensioning rod 412 for several circles to stretch and tension the packaging film 2. Then, the starting end of the packaging film 2 is clamped by the clamping rod 441. At this time, the fifth driving mechanism 43 drives the gear 42 to rotate, and the driving gear 42 will drive the rotating tooth disc 41 to rotate clockwise. The rotation of the rotating tooth disc 41 will drive the packaging film 2 to wind around the lettuce. After the rotating tooth disc 41 drives the packaging film 2 to wind around the lettuce for several circles, the clamping rod 441 is pushed out to release the previously fixed starting end of the packaging film 2. After the rotating tooth disc 41 continues to rotate and drives the packaging film 2 to wind around the lettuce for an appropriate number of circles, the electromagnetic push rod 452 quickly pops out the serrated knife 451 to cut the packaging film 2, and then quickly retracts to the initial position to complete a complete bundling process for the lettuce.

[0066] In this embodiment, the clamping mechanism can ensure that the packing film does not come loose during the process of the rotating tooth disc driving the packing film to wind around the lettuce, and can be tightly wound around the lettuce, enhancing the firmness and tightness of bundling; secondly, the cutting mechanism uses an electromagnetic push rod to achieve the quick ejection and retraction of the serrated knife, shortening the time required to cut the packing film during the bundling process, ensuring that the packing film can be cut in time after bundling is completed without affecting the next bundling operation.

[0067] Alternatively, the sixth driving mechanism 442 may include, but is not limited to, a driving motor, a servo motor or a stepping motor, and this embodiment does not make specific limitations here.

[0068] Alternatively, the seventh driving mechanism 453 may include, but is not limited to, a driving motor, a servo motor or a stepping motor, and this embodiment does not make specific limitations here.

[0069] As a preferred implementation, the bundling device 40 is further provided with a mounting structure 46. The mounting structure 46 includes a first polyurethane rubber wheel set 461 disposed on the top of the rotating tooth disc 41 for axially fixing the rotating tooth disc 41, and a second polyurethane rubber wheel set 462 disposed on the bottom of the rotating tooth disc 41 for axially fixing the rotating tooth disc 41.

[0070] Wherein, the first polyurethane rubber wheel set 461 is two polyurethane rubber wheels disposed on the top of the rotating tooth disc 41, and the second polyurethane rubber wheel set 462 is two polyurethane rubber wheels disposed on the bottom of the rotating tooth disc 41.

[0071] In this embodiment, the mounting structure uses polyurethane rubber wheels to restrict the axial movement of the rotating tooth disc, ensuring stability during the bundling process, avoiding uneven winding of the packing film caused by axial shaking, thereby affecting the bundling effect; secondly, the polyurethane material has good wear resistance and high compressive strength, and can withstand the pressure and load generated by the long-term operation of the rotating tooth disc without deformation or damage, improving the stability and service life of the equipment, and the polyurethane material itself has elasticity, which can effectively absorb and buffer the vibration and impact generated during the movement of the rotating tooth disc, improving the running smoothness and reliability of the bundling device, and also reducing the running noise.

[0072] Furthermore, as a preferred implementation rather than a limitation of this solution, the frame 1 is further installed with a collecting device 60. The collecting device 60 includes a first collecting frame 61 disposed before the bundling device 40 for collecting qualified lettuce, and a second collecting frame 62 disposed below the quality screening device 50 for collecting unqualified lettuce.

[0073] In this embodiment, by setting up the first collection box and the second collection box, the qualified lettuce and the unqualified lettuce are collected respectively, so as to realize the classification processing of the lettuce, which is convenient for subsequent corresponding processing measures.

[0074] As a preferred implementation manner, a weight sensor may be additionally arranged in the first collection box 61. The weight sensor is used to detect whether the weight of the lettuce in the first collection box 61 reaches a threshold value. When the threshold value is reached, the transportation device 30 is stopped from continuing to transport the lettuce, and the bundling device 40 starts to bundle.

[0075] Of course, in addition to using the weight sensor to detect whether the first collection box 61 is full of lettuce, an optoelectronic sensor can also be used for detection. The weight sensor proposed in this embodiment is only a preferred exemplary example, and does not specifically limit the detection method.

[0076] In this embodiment, when it is detected that the first collection box is full of lettuce, the transportation device is controlled to stop transporting the lettuce, and the bundling device is started to bundle. On the one hand, it is to prevent the overweight of the lettuce in the first collection box from causing potential safety hazards to the equipment and operators, improving safety. On the other hand, it can ensure that the weight of each bundle of lettuce is relatively consistent, improving the standardization and quality stability of the product.

[0077] Further, as a preferred implementation manner rather than a limitation of this solution, a traveling device 70 is also installed on the frame 1. The traveling device 70 is a crawler installed on both sides of the frame 1, and the traveling device 70 is used to provide traveling power for the equipment.

[0078] In this embodiment, the crawler-type traveling device can travel stably on various complex terrains, enabling the equipment to operate normally in different working environments without being restricted by the terrain, greatly expanding the use range of the equipment.

[0079] The working principle of this embodiment is as follows: A lettuce leaf-removing, harvesting and bundling integrated machine proposed by the present invention realizes automatic operation from leaf-removing, harvesting to bundling, and can automatically screen out unqualified lettuce before bundling. The specific implementation process is as follows: When removing leaves, the lettuce passes through between the first pulley 11 and the second pulley 12. During the passing process, the leaf-removing drums 13 on the first pulley 11 and the second pulley 12 rotate, and the bristles 131 on the leaf-removing drums 13 are used to remove the leaves of the lettuce. At the same time, when removing the leaves of the lettuce, according to the different heights of different lettuces, the first pulley 11 and the second pulley 12 can be moved through the moving structure 15 to change their inclination angles with the frame 1, so as to adapt to different height requirements; After defoliation, the lettuce enters the cutting device 20. The rotating plate 242 of the cutting device 20 adjusts the angle and position of the lettuce, and the cooperation between the partition plate 23 and the rotating plate 242 limits the movement space of the lettuce, ensuring that the lettuce will not move randomly left and right during the cutting process. After cutting, the rotating plate 242 rotates backward and pushes the cut lettuce into the transportation device 30. During transportation, the rotation of the driving pulley 321 drives the driven pulley 323 to rotate synchronously through the synchronous belt 324. The bearing 322 at the top of the conveyor belt 31 also rotates synchronously with the rotation of the driven pulley 323, so that the conveyor belt 31 also rotates synchronously with the rotation of the bearing 322, realizing that the conveyor belt can transport lettuce. The rib design on the conveyor belt 31 can prevent the lettuce from shifting during transportation, ensuring the stability during transportation. Before being transported to the bundling device 40 for bundling, the quality screening device 50 screens out the lettuce with unqualified quality. Specifically, first, the image acquisition module 521 acquires the image data of the lettuce and transmits the acquired image data to the data processing center 522. The data processing center 522 uses its data processing model integrated with AI algorithms and deep learning algorithms to process the acquired image data, judges whether the lettuce has quality-affecting situations such as yellowing, blackening, obvious cracking or rotting, and outputs the final recognition result. If the recognition result received by the control module 523 is that the quality of the lettuce is unqualified, the control sliding mechanism 512 slides forward to drive the baffle 511 to extend and block the lettuce with unqualified quality. If the recognition result received by the control module 523 is that the quality of the lettuce is qualified, the control sliding mechanism 512 slides backward to drive the baffle 511 to retract, so that the lettuce with qualified quality can smoothly enter the bundling device 40 for bundling. When bundling the lettuce with qualified quality, the packing film 2 is pre-fixed on the packing film fixing frame 411. Then, the starting end of the packing film 2 is wound around the tensioning rod 412 for several turns. After the packing film 2 is stretched and tightened, the starting end of the packing film 2 is clamped by the clamping rod 441. At this time, the rotation of the driving gear 42 drives the rotating tooth disc 41 to rotate clockwise. The rotation of the rotating tooth disc 41 drives the packing film 2 to wind around the lettuce. After the rotating tooth disc 41 drives the packing film 2 to wind around the lettuce for several turns, the clamping rod 441 is pushed out to release the previously fixed starting end of the packing film 2. After the rotating tooth disc 41 continues to rotate and drives the packing film 2 to wind around the lettuce for an appropriate number of turns, the electromagnetic push rod 452 quickly pops out the serrated knife 451 to cut the packing film 2, and then quickly retracts to the initial position, realizing a complete bundling process for the lettuce.

[0080] Those of ordinary skill in the art should understand that: As described above, an implementation manner is provided in combination with specific content, and it is not considered that the specific implementation of the present invention is limited only to these descriptions. At the same time, due to different industry names, it is not limited to the above names, nor limited to English names. Any method, structure, etc. that is similar or identical to the present invention, or any technical deduction or replacement made under the premise of the inventive concept of the present invention, should be regarded as the protection scope of the present invention.

Claims

1. A lettuce leaf-removing, harvesting and bundling integrated machine, characterized in that, It includes a frame (1). A leaf-removing device (10) for removing lettuce leaves is installed at the front end of the frame (1). A cutting device (20) for cutting lettuce is provided on the discharge side of the leaf-removing device (10). The frame (1) is also equipped with a transporting device (30) for transporting the cut lettuce to the bundling position and a bundling device (40) for bundling the lettuce. A quality screening device (50) is arranged between the transporting device (30) and the bundling device (40). When the quality of the lettuce is unqualified, the quality screening device (50) blocks the lettuce from entering the bundling device (40). The quality screening device (50) includes a blocking structure (51) for blocking the lettuce from entering the bundling device (40). The blocking structure (51) is electrically connected to an automatic recognition system (52). The automatic recognition system (52) is used to identify the quality of the lettuce and control the blocking structure (51) to extend when it recognizes that the quality of the lettuce is unqualified.

2. The lettuce leaf-removing, harvesting and bundling integrated machine according to claim 1, wherein, The blocking structure (51) includes a baffle (511) and a sliding mechanism (512) for driving the baffle (511) to extend or retract.

3. The one-piece lettuce leaf-removing, harvesting and bundling machine according to claim 1, characterized in that, The automatic recognition system (52) includes: An image acquisition module (521) for acquiring image data of the lettuce. A data processing center (522) integrated with AI algorithms and deep learning algorithms. The data processing center (522) is electrically connected to the image acquisition module (521) for processing the acquired image data and outputting an identification result. A control module (523) electrically connected to the data processing center (522). The control module (523) is used to receive the identification result and control the blocking structure (51) to extend or retract according to the identification result.

4. The lettuce leaf-removing, harvesting and bundling integrated machine according to claim 2, wherein, An arc-shaped plate (513) is provided at the top of the baffle (511). The arc-shaped plate (513) is integrally connected to the baffle (511). The arc-shaped plate (513) is provided with an arc-shaped surface (514) so that the lettuce can smoothly enter the bundling device (40) when the baffle (511) retracts.

5. A lettuce leaf-removing, harvesting and bundling integrated machine according to claim 1, characterized in that, The leaf-removing device (10) includes an inclined first pulley (11) and a second pulley (12). Leaf-removing rollers (13) for removing lettuce leaves are installed on both the first pulley (11) and the second pulley (12), and a first driving mechanism (14) for driving the leaf-removing rollers (13) to rotate for leaf removal. A plurality of bristles (131) are provided on the leaf-removing rollers (13). The plurality of bristles (131) are arranged spirally along the leaf-removing rollers (13). The spiraling directions of the bristles (131) arranged spirally along the leaf-removing rollers (13) on the first pulley (11) and the second pulley (12) are opposite.

6. The lettuce leaf-removing, harvesting and bundling integrated machine according to claim 5, characterized in that, The defoliating device (10) further includes a moving structure (15) for controlling the up-and-down movement of the first pulley (11) and the second pulley (12). The moving structure (15) includes a telescopic rod (151) and a connecting rod (152) connected to the telescopic rod (151). The connecting rod (152) is arranged between the first pulley (11) and the second pulley (12). One end of the telescopic rod (151) is also connected with a second driving mechanism (153) for driving its telescopic movement.

7. A lettuce leaf-removing, harvesting and bundling integrated machine according to claim 1, characterized in that, The cutting device (20) includes a rotary blade (21) for cutting lettuce and a third driving mechanism (22) for driving the rotary blade (21) to rotate and cut. The cutting device (20) is further provided with a partition plate (23) and a rotary structure (24) for cooperating with the partition plate (23) to stabilize the position of the lettuce. After cutting, the rotary structure (24) is also used to push the lettuce to the conveying device (30); The rotary structure (24) includes a rotating shaft (241) and a plurality of rotating plates (242). The plurality of rotating plates (242) are arranged along the circumference of the rotating shaft (241). The rotary structure (24) further includes a control mechanism (243) for controlling the rotation of the rotating shaft (241).

8. The one-piece lettuce leaf-removing, harvesting and bundling machine according to claim 1, characterized in that, The conveying device (30) includes an inclined conveyor belt (31) and a power structure (32) for providing power for the conveyor belt (31) to convey lettuce. A plurality of convex strips (311) are arranged on the conveyor belt (31). The plurality of convex strips (311) are arranged at intervals, and a groove (312) is formed between adjacent convex strips (311) to increase the friction force of lettuce conveying; The power structure (32) includes a driving pulley (321) and bearings (322) arranged at the top and bottom of the conveyor belt (31). The bearing (322) at the top of the conveyor belt (31) is sleeved with a driven pulley (323). The driving pulley (321) is connected to the driven pulley (323) through a synchronous belt (324). The driving pulley (321) is connected with a fourth driving mechanism (325) for driving its rotation.

9. The integrated lettuce leaf-removing, harvesting and bundling machine according to claim 1, characterized in that, The bundling device (40) includes a rotary toothed disc (41) and a gear (42) meshed with the rotary toothed disc (41). The gear (42) is connected with a fifth driving mechanism (43) for driving its rotation. The rotary toothed disc (41) is provided with a packing film fixing frame (411) for fixing the packing film (2) and a tensioning rod (412) for stretching and tensioning the packing film (2). The bundling device (40) further includes a clamping mechanism (44) for clamping the packing film (2) after stretching and tensioning and a cutting mechanism (45) for cutting the packing film (2) after bundling is completed.

10. A lettuce leaf-removing, harvesting and bundling integrated machine according to claim 1, characterized in that, The frame (1) is further installed with: A collecting device (60). The collecting device (60) includes a first collecting frame (61) arranged before the bundling device (40) for collecting qualified lettuce and a second collecting frame (62) arranged below the quality screening device (50) for collecting unqualified lettuce; Traveling device (70), the traveling device (70) being crawlers installed on both sides of the frame (1), and the traveling device (70) being used to provide traveling power for the equipment.

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