An automatic seedling raising system

Abstract

This utility model discloses an automatic seedling raising system, belonging to the technical field of seedling equipment. The utility model includes a seedling tower and a conveying device located on one side of the seedling tower. Along the conveying direction of the conveying device are a germination feeding device, a transfer device, a turning device, and a cleaning device. The conveying device includes a first conveying line, a second conveying line, a third conveying line, and a fourth conveying line arranged in a rectangular pattern. The fourth conveying line includes a first region and a second region with mutually perpendicular conveying directions, and the bottom of the two regions is provided with several spaced-apart reversing conveying mechanisms. Through the cooperation of the first region, the second region, and the reversing conveying mechanisms, this utility model enables flexible switching of seedling trays between the first and third conveying lines, thereby achieving continuous operation of seedling tray circulation. This not only saves space along the length of the entire conveying system but also improves work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of seedling equipment, and more specifically, relates to an automatic seedling system. Background Technology

[0002] Seedling cultivation is a method of raising seedlings in specially designed seedbeds for transplanting into production fields. It is a method capable of large-scale seedling cultivation, applicable to crops such as rice, sweet potatoes, vegetables, fruit trees, and flowers. Compared to direct seeding, its advantages lie in creating the necessary environmental conditions based on the characteristics of crop seedling growth and development, employing advanced seedling techniques, and implementing centralized management to cultivate high-quality and abundant seedlings. Seedling cultivation allows for earlier sowing in unsuitable growing seasons, extending the crop's growing period and promoting earlier maturity. Furthermore, this method facilitates meticulous management, promoting robust seedling growth and strong vitality, laying a solid foundation for high-yield and high-quality production.

[0003] In existing technologies, some automated seedling raising equipment has been developed for seedling cultivation. This equipment typically places plant seedlings or seeds in seedling trays. A conveyor line then transports the trays between different workstations. Traditional conveyor lines generally use a single linear transmission mode, making it difficult to form a complete closed loop for the seedling trays. This design has two significant drawbacks: firstly, linear transmission restricts work efficiency and prevents continuous operation through cyclical flow; secondly, linear layouts often require more linear space, increasing the demand for floor space and hindering efficient space utilization.

[0004] A search revealed a seedling tray conveyor line in patent CN106586519A. This application uses two opposing belt conveyors to transport the seedling trays, and a robotic arm to transfer the trays between the two conveyor lines. However, the industry still needs more diverse and sophisticated designs to achieve continuous operation of seedling tray circulation. Utility Model Content

[0005] The problem to be solved In view of at least some of the problems existing in the prior art, this utility model proposes an automatic seedling raising system, the purpose of which is to solve the problem that the existing seedling raising system adopts a single linear transmission mode, which easily occupies a large space and is not conducive to improving work efficiency.

[0006] Technical solution To solve the above problems, the technical solution adopted by this utility model is as follows: This utility model discloses an automatic seedling raising system, including a seedling tower and a conveying device located on one side of the seedling tower. The conveying device includes a first conveyor line, a second conveyor line, a third conveyor line, and a fourth conveyor line arranged in a rectangular pattern; The first conveyor line is equipped with a germination feeding device for soaking and germinating seeds, and for feeding and loading germinated seeds onto trays. The third conveyor line is equipped with a transfer device for transferring seedling trays between the conveyor and the seedling tower. The fourth conveyor line is equipped with a turning device for harvesting seedlings cultivated in the seedling trays, and a cleaning device for cleaning the seedling trays after harvesting is provided between the fourth conveyor line and the first conveyor line; wherein, The fourth conveyor line is a roller conveyor line, which includes a first region and a second region with conveying directions perpendicular to each other; and the first region is provided with a first inlet channel near the third conveyor line, and the second region is provided with a first outlet channel near the first conveyor line. The bottom of the first inlet and outlet channel area is provided with several reversing conveying mechanisms distributed at intervals. The reversing conveying mechanism includes a housing, which is located between two adjacent rollers in the corresponding area and connected to a lifting assembly. The housing is provided with a conveying unit, and the conveying direction of the conveying unit is perpendicular to the conveying direction of its respective area.

[0007] In some alternative embodiments, the third conveyor line is divided into two segments by a transplanting roller line, the transplanting roller line including a first transplanting roller line and a second transplanting roller line; wherein, The first transplanting roller line is provided with a second inlet channel at the junction of the first transplanting roller line and the third conveyor line, and the first transplanting roller line is provided with a reversing conveyor mechanism in the area of ​​the second inlet channel; the conveying direction of the reversing conveyor mechanism is consistent with the conveying direction of the third conveyor line and perpendicular to the conveying direction of the first transplanting roller line. The second transplanting roller conveyor is symmetrically arranged with the first transplanting roller conveyor, and the conveying directions are opposite.

[0008] In some optional embodiments, the germination and feeding device includes a germination mechanism and a feeding mechanism that are interconnected; wherein, The unloading mechanism includes a mounting frame, a hopper mounted on the mounting frame, and an unloading conveyor line; wherein, The feeding hopper is located above the feeding conveyor line, and a slot is formed at the discharge port of the feeding hopper, which forms a discharge channel with the conveyor belt of the feeding conveyor line. Seeds falling from the discharge port of the hopper and accumulating on the feeding conveyor line are then output from the discharge channel and fall into the seedling tray below, driven by the conveyor belt.

[0009] In some alternative embodiments, the hopper is provided with an adjusting plate that covers the slot opening and is used to adjust the height of the discharge channel. The end of the conveyor belt is equipped with a scraper plate, which has an inclined scraping surface for cleaning seeds adhering to the conveyor belt.

[0010] In some optional embodiments, the germination feeding device further includes a sensing mechanism for identifying the position of the seedling tray. The sensing mechanism is mounted on the conveying device and includes a mounting base and a swing plate rotatably mounted on the mounting base; wherein... The first end of the swing plate is connected to a sensing block, and the mounting base is provided with a sensing probe that cooperates with the sensing block. Under normal conditions, due to gravity, the first end is in a downward state, causing the sensing block and the sensing probe to approach or contact each other, and the signal is connected; when the second end of the swing plate is subjected to external force, it forces the first end to rise, causing the sensing block to move away from the sensing probe, and the signal is disconnected.

[0011] In some alternative embodiments, the mounting base is a hollow frame structure, and the swing plate is hinged to the mounting base by a pin, and the pin is equipped with a cotter pin. The first end extends into the inner cavity of the mounting base through an opening on the mounting base; the sensing end of the sensing probe is located in the inner cavity of the mounting base.

[0012] In some alternative embodiments, the germination mechanism includes a germination tank body and an aeration unit for aerating the germination tank body. The germination tank body includes a cylindrical body and a conical body connected vertically. The bottom of the conical body forms a discharge port, and the discharge port is connected to a discharge valve through a flange pipe. A sleeve is fitted around the lower part of the cone, forming a transition space between the sleeve and the cone; The cone is provided with several through holes in the area covered by the sleeve, and the bottom of the sleeve is provided with a drain outlet. The aeration unit includes several aeration heads arranged in a ring within the transition space, and each aeration head is connected to an aeration pipe; the free end of the aeration pipe passes through a sleeve and is connected to an aeration fan.

[0013] In some optional embodiments, the flange tube is provided with a plurality of air blowing holes arranged in a ring, and the air blowing holes are connected to an air pump through a pipe. The bottom of the sleeve is equipped with a vibration source, which is used to drive the discharge port of the germination tank body to vibrate.

[0014] In some optional embodiments, the transfer device includes a base and a clamping assembly disposed on the base, the clamping assembly including an X-axis horizontal linear module disposed on the base and a Z-axis vertical linear module slidably disposed on the X-axis horizontal linear module. The Z-axis vertical linear module is mounted on a slider located above the X-axis horizontal linear module via a first connecting block; The Z-axis vertical linear module is connected to a second connecting block via a slider; each end of the second connecting block is connected to a third connecting block; wherein, The second connecting block is located above the X-axis horizontal linear module, and the two third connecting blocks are located on both sides of the X-axis horizontal linear module. The bottom of the two third connecting blocks extends to the bottom of the X-axis horizontal linear module and are connected to the clamping component.

[0015] In some alternative embodiments, the flipping device includes a flipping frame and a lifting assembly and a clamping flipping assembly disposed on the flipping frame; wherein, The lifting assembly is located below the second area and is used to lift multiple seedling trays from the fourth conveyor line; The clamping and flipping assembly includes a clamping unit rotatably mounted on a flipping frame and a driving unit for driving the clamping unit to rotate. The clamping unit includes a frame and several telescopic components disposed on opposite sides of the frame. Several telescopic components located on the same side wall of the frame are connected together to a clamping strip. Both ends of the clamping bar are provided with stop blocks, and a clamping space is formed between the two stop blocks; A set of clamping bars arranged opposite each other are used to clamp multiple raised seedling trays simultaneously, and the sides of the clamped seedling trays are confined within the corresponding clamping space.

[0016] Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: (1) An automatic seedling raising system of the present invention is provided by setting up four conveyor lines in a rectangular distribution; at the same time, the second conveyor line and the fourth conveyor line are divided into two areas, one area is provided with a first roller distributed in a horizontal direction, and the other area is provided with a second roller distributed in a vertical direction, and both areas are provided with a reversing conveyor mechanism; through the cooperation of the first roller, the second roller and the reversing conveyor mechanism, the seedling tray can be flexibly switched between the first conveyor line and the third conveyor line, thereby realizing the continuous operation of the seedling tray circulation, which is not only conducive to saving the space occupied by the entire conveying system in the length direction, but also conducive to improving work efficiency.

[0017] (2) An automatic seedling system of the present invention has a groove formed at the discharge port of the hopper, and a discharge channel is formed between the groove and the conveyor belt of the feeding conveyor line; the seeds falling from the discharge port of the hopper and accumulating on the feeding conveyor line are first spread out on the feeding conveyor line, and then gradually fall into the seedling tray below; compared with the traditional instant feeding mode, the present invention adopts a continuous feeding mode, which can effectively improve the flatness of the seeds in the seedling tray while realizing quantitative feeding.

[0018] (3) In the automatic seedling system of this utility model, the swing plate of the sensing mechanism is hinged to the mounting base. The on / off operation of the sensor is realized by utilizing the gravity difference between the two ends of the swing plate. Compared with the traditional spring structure, it is not only simpler in structure, but also has a good service life. At the same time, the Hall sensor is adopted, which has a stronger resistance to external environmental interference than the traditional photoelectric sensor. It can be used in the water and dusty environment of the automatic seedling production system, ensuring the sensitivity of the sensing effect.

[0019] (4) The automatic seedling raising system of this utility model, by setting up a sleeve, can form a transition space between the sleeve and the cone; the aeration head is set in the transition space and aerates the germination tank body through the through hole on the cone. With this design, since the aeration head will not block the feeding port, the aeration head can be set closer to the bottom of the germination tank body, thereby effectively reducing the aeration dead zone in the bottom area and ensuring the smoothness of the feeding in the later stage.

[0020] (5) In an automatic seedling raising system of the present invention, the Z-axis vertical linear module of the transfer device is set above the X-axis horizontal linear module. The Z-axis vertical linear module does not move up and down, but the clamping component moves up and down through the third connecting blocks on both sides. This can effectively avoid the off-center load of the Z-axis vertical linear module and improve the stability and accuracy of the module operation.

[0021] (6) The automatic seedling raising system of this utility model adopts a lifting and clamping working method for the seedling trays by the flipping device. With the help of the stop blocks at both ends of the clamping strip, a clamping method with two sides can be formed, which can effectively ensure the stability of the seedling trays. At the same time, multiple seedling trays can be clamped at the same time by using the clamping strip, which can greatly improve the clamping efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an automatic seedling raising system according to the present invention; Figure 2 This is a top view of an automatic seedling raising system according to the present invention; Figure 3 This is a schematic diagram of the conveying device in this utility model; Figure 4 This is a schematic diagram of the structure of the third conveyor line in this utility model; Figure 5 This is a schematic diagram of the reversing conveyor mechanism in this utility model; Figure 6 This is a schematic diagram of the transplanting roller line in this utility model; Figure 7 This is a schematic diagram of the assembly between the germination feeding device and the first conveyor line in this utility model; Figure 8 This is a schematic diagram of the feeding mechanism in this utility model; Figure 9 This is a schematic diagram of the structure of the lower hopper in this utility model; Figure 10 This is a schematic diagram of the material feeding conveyor line in this utility model; Figure 11 for Figure 7 Enlarged layout diagram at point A in the middle; Figure 12 This is a schematic diagram of the sensing mechanism in this utility model; Figure 13 This is another structural schematic diagram of the sensing mechanism in this utility model; Figure 14 for Figure 13 Schematic diagram of the swing plate structure; Figure 15 This is a schematic diagram of the germination mechanism in this utility model; Figure 16 This is a bottom view of the germination mechanism in this utility model; Figure 17 This is a schematic diagram of the assembly between the aeration unit and the germination tank body in this utility model; Figure 18 for Figure 17 A magnified view of a portion of point B in the middle; Figure 19 This is a schematic diagram of the support unit in this utility model; Figure 20 for Figure 19 A magnified view of a portion of point C in the middle; Figure 21 for Figure 19 A magnified view of a portion of point D in the middle; Figure 22 This is a schematic diagram of the assembly of a traditional exposure unit; Figure 23 This is a schematic diagram of the transfer device in this utility model; Figure 24This is a schematic diagram of the clamping component in this utility model; Figure 25 This is a schematic diagram of the assembly between the flipping device and the fourth conveyor line in this utility model; Figure 26 This is a schematic diagram of the flipping device in this utility model; Figure 27 This is a schematic diagram of the clamping and flipping component in this utility model; Figure 28 This is a schematic diagram of the lifting assembly in this utility model; Figure 29 This is a schematic diagram of the clamping strip in this utility model.

[0023] In the picture: 100, seedling tower; 200. Conveying device; 210. First conveyor line; 220. Second conveyor line; 230. Third conveyor line; 231. Transplanting roller line; 2311. First transplanting roller line; 2312. Second transplanting roller line; 2314. Second inlet channel; 2315. Second outlet channel; 240. Fourth conveyor line; 241. Conveyor line support; 2411. First zone; 2412. Second zone; 2413. First inlet channel; 2414. First outlet channel; 242. First roller; 243. Second roller; 244. Reversing conveyor mechanism; 2441. Housing; 2442. Drive sprocket; 2443. Driven sprocket; 2444. Conveyor chain; 300. Germination feeding device; 310. Germination mechanism; 311. Germination tank body; 3111. Cylinder; 3112. Cone; 3113. Sleeve; 3114. Flange pipe; 31141. Air blowing hole; 3115. Discharge valve; 312. Aeration unit; 3121. Aeration head; 3122. Aeration pipe; 3123. Control valve; 3124. Vibration source; 313. Spraying unit; 314. Support unit; 3141. Support column; 31411. First mounting part; 31412. Second mounting part; 3142. Conduit; 31421. Wire hole; 3143. Intermediate connecting block; 3144. Reinforcing rib.

[0024] 320. Feeding mechanism; 321. Mounting frame; 322. Feeding hopper; 3221. Groove; 323. Feeding conveyor line; 3231. Conveyor belt; 3232. Feeding frame; 3233. Adjusting plate; 3234. Scraper; 3235. Guide plate; 324. Transition component; 330. Sensing mechanism; 331. Mounting base; 332. Swing plate; 3321. First end; 3322. Second end; 333. Sensing block; 334. Sensing probe; 335. Pin; 336. Cotter pin; 400. Transfer device; 410. Base; 411. Support base; 420. Clamping assembly; 421. X-axis horizontal linear module; 422. Z-axis vertical linear module; 423. First connecting block; 424. Second connecting block; 425. Third connecting block; 426. Reinforcing plate; 427. Clamping component; 500. Tilting device; 510. Tilting frame; 520. Clamping and flipping assembly; 521. Clamping unit; 5211. Frame; 5212. Telescopic component; 5213. Clamping bar; 5214. Stop block; 522. Drive unit; 5221. Drive shaft; 5222. Rotation power source; 5223. Connecting arm; 530. Lifting assembly; 531. Lifting frame; 532. Lifting power source; 533. Push rod; 534. Mounting bracket; 535. Extension plate; 536. Guide column; 600. Cleaning device; 700. Seedling tray. Detailed Implementation

[0025] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] The present invention will be further described below with reference to specific embodiments.

[0028] like Figure 1 , Figure 2 As shown, an automatic seedling raising system according to this embodiment includes a seedling tower 100 and a conveying device 200 located on one side of the seedling tower 100. The conveying device 200 has a U-shaped structure, and a germination feeding device 300, a transfer device 400, a turning device 500, and a cleaning device 600 are distributed along the conveying direction of the conveying device 200.

[0029] The conveying device 200 is used to switch the seedling tray 700 between different workstations; the germination and feeding device 300 is used to soak and germinate the seeds, and to feed and load the germinated seeds into the trays. The transfer device 400 is used to transfer the seedling tray 700 containing germinated seeds to the seedling tower 100, and to transfer the seedling tray 700 with seedlings grown from the seedling tower 100 back to the conveying device 200. The turning device 500 is used to harvest the seedlings grown in the seedling tray 700. The cleaning device 600 is used to clean the empty trays after harvesting. The cleaned seedling tray 700 is then conveyed by the conveying device 200 to the germination and feeding device 300 to carry new germinated seeds, and this cycle is repeated to complete a closed loop.

[0030] It is worth mentioning that the germination feeding device 300, transfer device 400, flipping device 500 and cleaning device 600 in this embodiment can all adopt existing technologies.

[0031] refer to Figure 3 As shown, in one optional embodiment of the conveying device 200, the conveying device 200 includes a first conveying line 210, a second conveying line 220, a third conveying line 230, and a fourth conveying line 240 arranged in a rectangular pattern. The germination feeding device 300 is mounted above the first conveying line 210; the transfer device 400 is positioned above the third conveying line 230 and corresponds to the position of the seedling tower 100; the flipping device 500 is located on the side of the fourth conveying line 240; and the cleaning device 600 is located between the fourth conveying line 240 and the first conveying line 210.

[0032] The first conveyor line 210 and the third conveyor line 230 are two main conveyor lines arranged in parallel. They can be belt conveyors in the prior art. Their specific structure is in the prior art and will not be described in detail here.

[0033] The second conveyor line 220 and the fourth conveyor line 240 are respectively used to connect the corresponding ends of the first conveyor line 210 and the third conveyor line 230 to complete the flexible switching of the seedling tray 700 between the first conveyor line 210 and the third conveyor line 230, thereby realizing the continuous operation of the seedling tray 700 in circulation. The second conveyor line 220 and the fourth conveyor line 240 have the same structure and are both roller conveyors, only their orientation differs. The structure and working principle of the fourth conveyor line 240 will be described in detail below as an example.

[0034] refer to Figure 4 As shown, the fourth conveyor line 240 includes a conveyor line support 241, which extends along its length (i.e., Figure 4 The region (in the X direction) can be divided into a first region 2411 and a second region 2412. Within the first region 2411, several components are distributed laterally (…). Figure 4 The first roller 242 (in the Y direction) has the same conveying direction as the third conveyor line 230. At the same time, a first inlet channel 2413 is provided in the first area 2411 near the third conveyor line 230 to ensure that the seedling trays 700 on the third conveyor line 230 can naturally transition into the first area 2411.

[0035] The second area 2412 contains several longitudinally distributed ( Figure 4 The second roller 243 (in the X direction) is perpendicular to the conveying direction of the third conveyor line 230, and its height is slightly higher than that of the first roller 242. Meanwhile, a first outlet channel 2414 is provided in the second region 2412 near the first conveyor line 210 to facilitate the switching of the seedling tray 700 between the second region 2412 and the first conveyor line 210.

[0036] Since the conveying directions of the seedling tray 700 in the first region 2411 and the second region 2412 are perpendicular to each other, in order to facilitate the stable transfer of the seedling tray 700 between the two regions, in this embodiment, multiple sets of reversing conveying mechanisms 244 are provided in the first region 2411; wherein, the reversing conveying mechanism 244 is located in the gap between two adjacent first rollers 242, and its conveying direction is consistent with the conveying direction of the second roller 243, and is used to transfer the seedling tray 700 in the first region 2411 to the second region 2412.

[0037] Specifically, refer to Figure 5 , Figure 6 As shown, the reversing conveyor mechanism 244 is a chain conveyor structure, which includes a housing 2441. Inside the housing 2441 are a driving sprocket 2442, a driven sprocket 2443, and a conveyor chain 2444 connecting the driving and driven sprockets. The driving sprocket 2442 is connected to a drive source for driving the conveyor chain 2444 to rotate. The housing 2441 is connected to a lifting assembly for lifting the housing 2441. Both the drive source and the lifting assembly can utilize existing technology and are not specifically limited here.

[0038] Of course, in order to achieve stable transfer of the seedling tray 700 between the second area 2412 and the first conveyor line 210, a reversing conveyor mechanism 244 also needs to be set in the area of ​​the first outlet channel 2414; at this time, the conveying direction of the conveyor chain 2444 is consistent with that of the first conveyor line 210.

[0039] Specifically, in this embodiment, three sets of reversing conveying mechanisms 244 are provided in the first region 2411 and the second region 2412. Meanwhile, the drive source is a motor, and the lifting assembly is any one of an electric push rod, a pneumatic cylinder, or a hydraulic cylinder.

[0040] In this embodiment, the reversing process of the seedling tray 700 on the fourth conveyor line 240 is as follows: After the seedling tray 700 on the third conveyor line 230 enters the first area 2411 through the first inlet channel 2413, the lifting assembly is activated, driving the reversing conveyor mechanism 244 to move upward and lift the seedling tray 700 from the bottom; then, the motor is activated, driving the conveyor chain 2444 to rotate, conveying the seedling tray 700 on it to the second area 2412. The seedling tray 700 is conveyed by the second roller 243 to the area where the first outlet channel 2414 is located; then, the reversing conveyor mechanism 244 in the second area 2412 transfers the seedling tray 700 to the first conveyor line 210.

[0041] An automatic seedling raising system in this embodiment, through the arrangement of four rectangularly distributed conveyor lines and the cooperation of the first roller 242, the second roller 243 and the reversing conveyor mechanism 244, can realize the flexible switching of the seedling tray 700 between the first conveyor line 210 and the third conveyor line 230, thereby realizing the continuous operation of the seedling tray 700 in circulation. This not only helps to save the space occupied by the entire conveyor system in the length direction, but also helps to improve work efficiency.

[0042] refer to Figure 3 , Figure 6 As shown, in some embodiments, the third conveyor line 230 is divided into two sections by a transplanting roller line 231, which includes a first transplanting roller line 2311 and a second transplanting roller line 2312. The first transplanting roller line 2311 carries seedling trays 700 loaded with seeds from the third conveyor line 230 and transfers these trays 700 to the seedling tower 100 by a transfer device 400 for seedling cultivation. The second transplanting roller line 2312 carries seedling trays 700 loaded with seedlings transferred from the seedling tower 100 and re-transports them to the third conveyor line 230.

[0043] Specifically, a second inlet channel 2314 is provided at the junction of the first transplanting roller conveyor 2311 and the third conveyor line 230; a second outlet channel 2315 is provided at the junction of the second transplanting roller conveyor 2312 and the third conveyor line 230. Simultaneously, a reversing conveyor mechanism 244 is provided within the areas of both the second inlet channel 2314 and the second outlet channel 2315. The output directions of the first transplanting roller conveyor 2311 and the second transplanting roller conveyor 2312 are perpendicular to the third conveyor line 230, and the conveying directions between the two transplanting roller conveyors are opposite.

[0044] During operation, the seedling tray 700, loaded with germinating seeds, enters the reversing conveyor 244 within the first transplanting roller line 2311 through the second inlet channel 2314; then, the reversing conveyor 244 descends, and the rollers transport the seedling tray 700 to the rightmost end of the first transplanting roller line 2311. Figure 6 (The orientation of the paper); then, the transfer device 400 transfers the seedling tray 700 onto the seedling tower 100.

[0045] After the seeds in the seedling tray 700 have finished germinating on the seedling tower 100, the transfer device 400 transfers the seedling tray 700 to the second transplanting roller line 2312; under the roller conveyor, the seedling tray 700 moves to the leftmost end of the second transplanting roller line 2312. Figure 6 (the orientation of the paper); then, the reversing conveyor 244 rises to transfer the seedling tray 700 back to the third conveyor line 230 for circulation.

[0046] refer to Figure 7 As shown, as an optional embodiment of the germination and feeding device 300, the germination and feeding device 300 includes a germination mechanism 310 and a feeding mechanism 320 that are interconnected; wherein, the germination mechanism 310 is used to complete the soaking and germination of seeds, and the feeding mechanism 320 is used to quantitatively and evenly spread the germinated seeds in a clean seedling tray 700.

[0047] like Figure 8 , Figure 9 , Figure 10 As shown, the unloading mechanism 320 includes a mounting frame 321, an unloading hopper 322 mounted on the mounting frame 321, and an unloading conveyor line 323. The unloading hopper 322 is located above the unloading conveyor line 323, and a slot 3221 is formed at the discharge port of the unloading hopper 322. The slot 3221 and the conveyor belt 3231 of the unloading conveyor line 323 form a discharge channel.

[0048] Specifically, the discharge port of the hopper 322 is an open structure formed by the bottom of the peripheral wall of the hopper 322, and the slot 3221 is opened on the peripheral wall located at the rear. Here, front and back are based on the conveying direction of the conveyor belt 3231. The end closer to the beginning of the conveyor belt 3231 is the front, and the end closer to the end of the conveyor belt 3231 is the rear.

[0049] In some embodiments, to ensure that seeds can only be discharged from the discharge channel, the gap between the portion of the bottom of the hopper 322 without the slot 3221 and the conveyor belt 3231 is generally no more than 2.5 mm. Meanwhile, to prevent interference between the bottom of the hopper wall and the conveyor belt 3231, a certain distance must be maintained between them. Preferably, this distance is 0.5-2.5 mm, for example, 0.8 mm, 1.4 mm, 2.2 mm, etc.

[0050] In this specific embodiment, the discharge port of the hopper 322 is a rectangular structure formed by four side plates. The slot 3221 is located at the bottom of the side plate near the end of the conveyor belt 3231, and this slot 3221 serves as the sole outlet for the seeds within the hopper 322. While there are gaps between the bottoms of the other three side plates and the conveyor belt 3231, these gaps are smaller than the diameter of the germinated seeds and are insufficient for the seeds to pass through.

[0051] During operation, the germinated seeds fall from the germination mechanism 310 into the hopper 322. Initially, since the conveyor belt 3231 is stationary, the seeds accumulate in the storage space formed by the hopper 322 and the conveyor belt 3231. As the feeding conveyor line 323 starts, the conveyor belt 3231 carries some seeds out of the storage space through the discharge channel and continues to transport them. These seeds eventually fall from the end of the conveyor belt 3231. At this time, the seedling tray 700 located below receives the seeds falling from the conveyor belt 3231 under the transport of the first conveyor line 210.

[0052] In some embodiments, after a seedling tray 700 is leveled, the feeding conveyor line 323 rotates in the opposite direction to send the seeds stuck to the end of the arc segment of the feeding conveyor line 323 back to the horizontal conveying surface, preventing the seeds stuck to the end of the feeding conveyor line 323 from falling to the ground or onto the first conveyor line 210 after the seedling tray 700 leaves below the feeding conveyor line 323.

[0053] While existing quantitative feeding mechanisms can control seed weight, the feeding method is primarily an opening and closing mechanism, meaning the feeding operation is concentrated at the moment the feed box opens. This can easily lead to uneven seed distribution within the seedling tray 700, resulting in localized accumulation. A common approach to address this is to add a vibration mechanism to vibrate the seeds within the seedling tray 700 to improve seed flatness. However, this is clearly not conducive to cost savings or improved efficiency.

[0054] In this embodiment of the automatic seedling system, the germinated seeds are first quantitatively discharged through the discharge channel and simultaneously spread evenly on the conveyor belt 3231; then, they continuously fall from the end of the conveyor belt 3231. Compared to the traditional instantaneous feeding mode, the sequential feeding mode adopted in this embodiment can effectively improve the flatness of the seeds within the seedling tray 700.

[0055] In some embodiments, the hopper 322 is provided with an adjusting plate 3233, which covers the slot 3221. Simultaneously, the adjusting plate 3233 has several oblong holes, and the hopper 322 has corresponding fastening holes; connecting bolts pass through the corresponding oblong holes and fastening holes in sequence to achieve an adjustable connection between the adjusting plate 3233 and the hopper 322.

[0056] In this embodiment, by setting an adjustment plate 3233 at the slot 3221, the height of the discharge channel can be flexibly adjusted to meet the uniform spreading requirements of seeds of different thicknesses.

[0057] In some other embodiments, a scraper 3234 is provided at the end of the conveyor belt 3231, and the scraper 3234 has an inclined scraping surface for timely cleaning of seeds adhering to the conveyor belt 3231.

[0058] In some optional embodiments, the mounting frame 321 is also connected to a transition member 324, which connects to the discharge end of the germination mechanism 310 to secure the mounting frame 321. Simultaneously, the transition member 324 also connects the feeding hopper 322 to the germination mechanism 310, allowing the seeds to fall directly into the feeding hopper 322 after germination. Of course, a switching valve, such as a pneumatic ball valve, needs to be provided between the transition member 324 and the germination mechanism 310 to facilitate control of the seed feeding timing.

[0059] Specifically, the transition piece 324 is a hollow structure, comprising a flange and a connecting plate connected vertically. The connecting plate covers the feed inlet of the hopper 322 and is connected to the top of the mounting bracket 321 by bolts; while the flange is used to connect to the discharge port of the germination mechanism 310.

[0060] In some alternative embodiments, guide plates 3235 are provided on both sides of the conveyor belt 3231 near the end, which are used to guide and limit the seeds during the conveying process.

[0061] Specifically, the guide plate 3235 includes a straight section and a curved section connected to each other. The free end of the straight section extends to the location of the adjusting plate 3233; the free end of the curved section extends at least to the lower surface of the feeding conveyor line 323 along its end. The curved section is located outside the scraper plate 3234. Additionally, a lug is provided on the side of the straight section, and the guide plate 3235 is mounted on the feeding frame 3232 via this lug.

[0062] Preferably, both the lug and the unloading frame 3232 are provided with oblong grooves for the connecting bolts to pass through, and the two oblong grooves are perpendicular to each other. This design allows the guide plate 3235 to be adjusted in both length and width directions. The length direction is the conveying direction of the conveyor belt 3231, and the width direction is the direction perpendicular to the conveying direction.

[0063] refer to Figure 11 As shown, in some optional embodiments, the germination feeding device 300 further includes a sensing mechanism 330 for identifying the position of the seedling tray 700, which is disposed on the conveying device 200.

[0064] refer to Figures 12-14 As shown, the sensing mechanism 330 includes a mounting base 331 and a swing plate 332 rotatably mounted on the mounting base 331. A sensing block 333 is connected to one end of the swing plate 332, and a sensing probe 334 that cooperates with the sensing block 333 is provided on the mounting base 331. For ease of description below, the end of the swing plate 332 connected to the sensing block 333 is defined as the first end 3321, and the other end is defined as the second end 3322.

[0065] In the natural state, the first end 3321 of the sensing mechanism 330 is in a downward state due to gravity, which makes the sensing block 333 and the sensing probe 334 approach or contact each other, and the signal is turned on. When the seedling tray 700 moves to the second end 3322 and applies downward gravity to it, it forces the first end 3321 to rise, which makes the sensing block 333 move away from the sensing probe 334, and the signal is turned off.

[0066] Specifically, the mounting base 331 is a hollow frame structure. The swing plate 332 is hinged to the mounting base 331 via a pin 335, which is equipped with a cotter pin 336. Meanwhile, the first end 3321 extends into the inner cavity of the mounting base 331 through an opening on the mounting base 331; the sensing end of the sensing probe 334 is also located in the inner cavity of the mounting base 331.

[0067] To facilitate the connection between the mounting base 331 and the mounting structure of the first conveyor line 210, lugs are provided on both sides of the mounting base 331, and mounting holes for self-tapping screws to pass through are provided on the lugs.

[0068] In one embodiment of the sensing mechanism 330, the sensing probe 334 is disposed on the side plate of the mounting base 331, and the sensing block 333 is disposed on the side of the first end 3321. With this design, when the sensing probe 334 senses the sensing block 333, the two are distributed left and right.

[0069] In another embodiment of the sensing mechanism 330, the sensing probe 334 is disposed on the base plate of the mounting base 331, and the sensing block 333 is disposed on the lower surface of the first end 3321. With this design, when the sensing probe 334 senses the sensing block 333, the two are distributed vertically.

[0070] In this embodiment, the sensing block 333 and the first end 3321 can be connected by adhesive or by bolts. When bolts are used, the bolts can be used as counterweights to ensure that the first end 3321 of the swing plate 332 can fall naturally without external force. Of course, if there is a large difference in the weight of the first end 3321 and the second end 3322, additional counterweights can be used for balance.

[0071] Furthermore, since the sensing mechanism 330 in this embodiment is used in an automated seedling production system, it typically operates in a damp and dusty environment. Traditional photoelectric sensors are easily affected by moisture and dust, which can impact sensing accuracy. Therefore, in this embodiment, the sensing probe 334 can be a metal sensor, and the sensing block 333 can be a metal block. Alternatively, the sensing probe 334 can be a Hall sensor, and the sensing block 333 can be a permanent magnet. Metal sensors and Hall sensors are existing technologies and can be directly purchased.

[0072] The sensing mechanism 330 in this embodiment is hinged between the swing plate 332 and the mounting base 331. The sensor is switched on and off by utilizing the gravity difference between the two ends of the swing plate 332. Compared with the traditional spring structure, it is not only simpler in structure, but also has a good service life.

[0073] Specifically, in this embodiment, the sensing mechanism 330 is installed on the mounting structures of the first conveyor line 210 and the third conveyor line 230, respectively, to identify the position of the seedling tray 700 passing under the germination feeding device 300 and the transfer device 400, so as to facilitate the control of the opening and closing timing of the feeding port of the germination feeding device 300 and the clamping timing of the transfer device 400. Of course, depending on the actual working conditions, the sensing mechanism 330 can also be installed on other conveyor lines.

[0074] refer to Figure 15 , Figure 16 As shown, in one optional embodiment of the germination mechanism 310, it includes a germination tank body 311 and an aeration unit 312. The germination tank body 311 is used for soaking and germinating seeds; the aeration unit 312 is used for aeration of the germination tank body 311. Of course, a spraying unit 313 is also required for spraying water into the germination tank body 311. The spraying unit 313 is prior art and is not specifically limited here.

[0075] Specifically, refer to Figure 17As shown, the germination tank body 311 is placed vertically and includes a cylindrical body 3111 and a cone 3112 connected vertically. The bottom of the cone 3112 forms a discharge port, which is connected to a discharge valve 3115 through a flange pipe 3114.

[0076] In some alternative embodiments, a sleeve 3113 is fitted onto the lower part of the cone 3112, and several through holes are formed in the area of ​​the cone 3112 covered by the sleeve 3113. Of course, the sleeve 3113 needs to have a clearance opening similar to the discharge port at the bottom of the cone 3112; and the connection between the clearance opening and the discharge port is designed to be sealed so that the area enclosed between the sleeve 3113 and the cone 3112 can form a sealed transition space. Simultaneously, a drain port is formed at the bottom of the sleeve 3113.

[0077] The aeration unit 312 includes several aeration heads 3121 arranged in a ring within the transition space. Each aeration head 3121 is connected to an aeration pipe 3122. The free end of the aeration pipe 3122 passes through the sleeve 3113 and is connected to an aeration blower (not shown in the figure).

[0078] In this embodiment of an automatic seedling raising system, during the initial soaking stage, the seeds require a large amount of water. At this time, water can be injected into the sleeve 3113 and then enter the germination tank body 311 through the through-hole to soak and absorb water from the seeds. During the aeration process, the air bubbles generated by the aeration head 3121 can enter the germination tank body 311 through the through-hole.

[0079] During the later stages of germination, excess water in the germination tank body 311 can flow back into the sleeve 3113 through the through-hole, and then be discharged through the drain outlet at the bottom of the sleeve 3113. This prevents the seeds from becoming oxygen-deficient due to continuous soaking, which can inhibit respiration and metabolism, or even cause the seeds to rot. At the same time, the seeds can be sprayed periodically by the spray unit 313 during the germination process to maintain environmental humidity and accelerate germination.

[0080] As can be seen from the above soaking process, in this embodiment, the through holes on the cone 3112 are used for both water filtration and aeration. At the same time, the size of these through holes needs to be smaller than the size of the seeds to prevent seeds inside the germination tank body 311 from entering the transition space.

[0081] In some embodiments, the through-hole is an elongated or oblong hole, and the width of the through-hole does not exceed 5 mm. On the one hand, it can effectively block the seeds from passing through the through-hole; on the other hand, it can ensure better water filtration and aeration effects.

[0082] Furthermore, the dimensions of the through-hole are 1-3mm*16-24mm. For example, 1mm*24mm, 2mm*22mm, 3mm*16mm, etc.

[0083] In this specific implementation, the through hole is 3mm*20mm in size; three aeration heads 3121 are provided in a ring, and a control valve 3123 is installed in the area outside the transition space of the aeration pipe 3122.

[0084] like Figure 22 As shown, in a traditional aeration unit 312, the aeration head 3121 is typically placed near the bottom of the germination tank body 311 to achieve aeration within the germination tank body 311. However, this aeration method creates a significant aeration dead zone between the aeration head 3121 and the discharge port. This dead zone prevents the aeration head 3121 from delivering gas to these areas, making it difficult for seeds in this area to burst open. Seeds tend to accumulate in this area, and the roots of germinated seeds become entangled, easily clogging the discharge flange pipe and causing feeding difficulties.

[0085] In this embodiment of the automatic seedling raising system, an aeration head 3121 is placed within the transition space, and aeration is provided to the germination tank body 311 through the through holes on the cone 3112. This design ensures that the aeration head 3121 does not obstruct the feed inlet, allowing it to be positioned closer to the bottom of the germination tank body 311. This effectively reduces aeration dead zones in the bottom area and ensures smooth feed flow later on.

[0086] In some alternative embodiments, a vibration source 3124 is provided at the bottom of the sleeve 3113. Specifically, a mounting plate is provided at the bottom of the sleeve 3113, and the vibration source 3124 is mounted on the mounting plate.

[0087] Preferably, the vibration source 3124 can be a vibration motor, which can provide excitation force in the vertical direction. During feeding, the vibration motor vibrates, causing the barrel wall to vibrate, which promotes the feeding of seeds in the flange pipe 3114 and also prevents the accumulation of seeds.

[0088] like Figure 18 As shown, in some alternative embodiments, the flange pipe 3114 is provided with a plurality of annularly distributed air blowing holes 31141, which are connected to an air pump (not shown in the figure) via pipes. During feeding, air is blown into the flange pipe 3114 through the air blowing holes 31141, and the airflow is used to agitate the seeds accumulated in the flange pipe 3114. In addition, the aeration head 3121 disturbs the seeds above the flange pipe 3114, which can further ensure the smoothness of feeding and effectively avoid the situation where seeds accumulate and cannot be discharged during discharge.

[0089] refer to Figure 15As shown, as a further improvement to the automatic seedling system of this embodiment, based on the above embodiment, a support unit 314 for supporting the germination tank body 311 is also included.

[0090] Specifically, refer to Figure 19 , Figure 20 , Figure 21 As shown, the support unit 314 includes a plurality of support columns 3141, each support column 3141 having a mounting notch at its top. The mounting notch includes a vertically arranged first mounting portion 31411 and an inclined mounting portion 31412. The first mounting portion 31411 is used for welding to the outer wall of the cylinder 3111, and the second mounting portion 31412 is used for welding to the outer wall of the cone 3112, thereby increasing the connection strength between the support column 3141 and the germination tank body 311 and ensuring the support effect.

[0091] In some embodiments, four support columns 3141 are arranged in a rectangular pattern, and conduits 3142 are provided between adjacent support columns 3141. Specifically, intermediate connecting blocks 3143 may be pre-welded onto the support columns 3141, and the ends of the conduits 3142 are installed on the corresponding intermediate connecting blocks 3143. At the same time, both the support columns 3141 and the conduits 3142 are provided with wire-passing holes 31421 to facilitate wire threading.

[0092] Furthermore, the support column 3141 is provided with reinforcing ribs 3144, the other end of which is inclined upward and connected to the outer wall of the sleeve 3113, for example, by welding. With this design, multiple reinforcing ribs 3144 can support the sleeve 3113 to further ensure the stability of the germination tank body 311.

[0093] refer to Figure 23 , Figure 24 As shown, in an optional embodiment of the transfer device 400, the transfer device 400 includes a base 410 and a clamping assembly 420 disposed on the base 410. The base 410 has a support base 411, and the clamping assembly 420 is disposed on the support base 411. The clamping assembly 420 includes an X-axis horizontal linear module 421 disposed on the base 410 and a Z-axis vertical linear module 422 slidably disposed above the X-axis horizontal linear module 421.

[0094] Specifically, the slider of the X-axis horizontal linear module 421 is connected to a first connecting block 423, which is located above the X-axis horizontal linear module 421. The Z-axis vertical linear module 422 is mounted on the first connecting block 423 and can move along the X-axis direction with the first connecting block 423.

[0095] The slider of the Z-axis vertical linear module 422 is connected to a second connecting block 424, which drives the second connecting block 424 to move up and down along the Z-axis. Simultaneously, a third connecting block 425 is connected to each end of the second connecting block 424. The second connecting block 424 is located above the X-axis horizontal linear module 421, and the two third connecting blocks 425 are located on either side of the X-axis horizontal linear module 421, with their bottoms extending below the X-axis horizontal linear module 421, all connected to a clamping component 427.

[0096] Compared to the traditional Z-axis vertical linear module 422 being positioned on the side of the X-axis horizontal linear module 421, which is prone to off-center loading, in this embodiment, the Z-axis vertical linear module 422 is positioned entirely above the X-axis horizontal linear module 421. Furthermore, the Z-axis vertical linear module 422 does not move vertically; instead, the clamping components 427 move vertically via the third connecting blocks 425 on both sides. This effectively avoids off-center loading of the Z-axis vertical linear module 422, improving the stability and accuracy of the module's operation.

[0097] In this embodiment, the driving force for the gripping component 427 of the transfer device 400 is provided by the Z-axis vertical linear module 422 and transmitted through the second connecting block 424; the gripping component 427 is actually connected to the third connecting block 425. Since the center of gravity of the second connecting block 424 is offset from that of the third connecting block 425, relying solely on the sliding engagement between the second connecting block 424 and the Z-axis vertical linear module 422 would cause a certain off-center load on the second connecting block 424, thus interfering with its vertical movement. Therefore, in this embodiment, the third connecting block 425 and the Z-axis vertical linear module 422 are vertically sliding together via a slide rail and a slider to counteract the off-center torque of the second connecting block 424 and increase the stability of the movement.

[0098] In some embodiments, a reinforcing plate 426 is further provided between the first connecting block 423 and the Z-axis vertical linear module 422. Preferably, two sets of reinforcing plates 426 are arranged in parallel; and the reinforcing plate 426 and the second connecting block 424 are respectively located on opposite sides of the Z-axis vertical linear module 422. That is, the Z-axis vertical linear module 422 is surrounded by the second connecting block 424, the third connecting block 425, and the reinforcing plate 426.

[0099] In other embodiments, the base 410 is provided with two parallel support seats 411, each support seat 411 being provided with a clamping component 420. The two clamping components 420 are respectively located above the first transplanting roller line 2311 and the second transplanting roller line 2312. One clamping component 420 is used to transfer the seedling tray 700 on the first transplanting roller line 2311 to the seedling tower 100; the other clamping component 420 is used to transfer the seedling tray 700 on the seedling tower 100 to the second transplanting roller line 2312.

[0100] Furthermore, an elongated hole parallel to the X-axis horizontal linear module 421 is provided on one side of the support base 411 located on the X-axis horizontal linear module 421; the free end of one of the third connecting blocks 425 passes through the elongated hole and is connected to the clamping component 427; the other third connecting block 425 extends downward from the side of the support base 411 and is connected to the clamping component 427.

[0101] It is also worth mentioning that in this embodiment, the X-axis horizontal linear module 421, the Z-axis vertical linear module 422, and the clamping component 427 are all existing technologies. For example, the linear module is a lead screw driven linear module or a gear and rack driven linear module, and the clamping component 427 is a robotic arm, etc. The specific structure will not be described in detail.

[0102] refer to Figure 25 , Figure 26 As shown, in an optional embodiment of the flipping device 500, the flipping device 500 includes a flipping frame 510 and a lifting assembly 530 and a clamping flipping assembly 520 disposed on the flipping frame 510. The lifting assembly 530 is located below the second region 2412 and is used to lift multiple seedling trays 700 from the fourth conveyor line 240. The clamping flipping assembly 520 includes a clamping unit 521 rotatably disposed on the flipping frame 510 and a drive unit 522 for driving the clamping unit 521 to rotate.

[0103] like Figure 27 As shown, in some embodiments, the clamping unit 521 includes a frame 5211 and a plurality of telescopic members 5212 disposed on opposite sides of the frame 5211. The plurality of telescopic members 5212 located on the same side wall of the frame 5211 are connected together to a clamping strip 5213.

[0104] Further, refer to Figure 29 As shown, both the upper and lower ends of the clamping strip 5213 are provided with stop blocks 5214, and a clamping space is formed between the two stop blocks 5214. A set of clamping strips 5213 arranged opposite to each other are used to clamp multiple raised seedling trays 700 at the same time, and the side of the clamped seedling trays 700 is confined within the corresponding clamping space.

[0105] This embodiment of an automatic seedling raising system employs a lifting-then-clamping method for gripping the seedling trays 700. Combined with stop blocks 5214 at both ends of the clamping strip 5213, this creates a two-sided encircling gripping method, effectively ensuring the stability of the seedling trays 700. Furthermore, by optimizing the structure of the clamping unit 521, the clamping strip 5213 can simultaneously perform clamping operations on multiple seedling trays 700, significantly improving clamping efficiency.

[0106] In some alternative embodiments, the frame 5211 consists of four hollow square tubes. The outer wall of each square tube has an installation port through which the telescopic member 5212 is installed. The telescopic member 5212 utilizes existing technology. For example, it can be replaced by a cylinder, hydraulic cylinder, electric actuator, or other structures capable of telescopic movement of the clamping bar 5213; no specific limitation is made here.

[0107] As one embodiment of the drive unit 522, the drive unit 522 includes a drive shaft 5221 and a rotational power source 5222 for driving the drive shaft 5221 to rotate. The drive shaft 5221 is provided with connecting arms 5223 near both ends. One end of the connecting arm 5223 is sleeved on the drive shaft 5221 through an expansion sleeve, and the other end is detachably connected to the frame 5211.

[0108] Furthermore, the rotational power source 5222 and the drive shaft 5221 are connected by a coupling to eliminate the misalignment between the output shaft of the rotational power source 5222 and the drive shaft 5221, reduce the impact of welding deformation and installation misalignment, and help to speed up the installation efficiency and production efficiency of the entire set of equipment.

[0109] refer to Figure 28 As shown, in one specific embodiment of the lifting assembly 530, the lifting assembly 530 includes a lifting frame 531 and a lifting power source 532 for driving the lifting frame 531 to move up and down. The top of the lifting frame 531 is connected to a plurality of push rods 533 distributed at intervals, and the plurality of push rods 533 protrude from the gap between adjacent rollers of the fourth conveyor line 240.

[0110] Furthermore, the lifting assembly 530 includes an interconnected mounting bracket 534 and an extension plate 535; wherein the mounting bracket 534 is used to connect with the tilting frame 510, and the extension plate 535 provides an installation platform for the lifting power source 532.

[0111] Specifically, a pair of mounting brackets 534 are arranged in parallel, and each mounting bracket 534 is connected to the tilting frame 510 through connecting blocks at both ends. The two sides of the extension plate 535 overlap the corresponding mounting brackets 534, and several guide posts 536 are provided between the extension plate 535 and the lifting frame 531. The lifting power source 532 is installed at the bottom of the extension plate 535 and is located between the two mounting brackets 534.

[0112] In some alternative embodiments, the tilting frame 510 is stepped in shape. The drive shaft 5221 of the tilting and clamping assembly 520 is rotatably mounted at the higher part of the step via a bearing seat, and the lifting assembly 530 is mounted at the lower part of the step via a mounting bracket 534. The fourth conveyor line 240 is located at the lower part of the step, and both ends extend beyond the lower part of the step. This design allows the frame 5211 and the seedling tray 700 to be clamped to be on the same horizontal plane during the clamping operation, facilitating clamping.

[0113] Traditional flipping devices 500 often require two sets of gripping and flipping components 520. One set is used to unload the crops from the seedling trays 700; the other set is used to transfer the empty seedling trays 700 after unloading to the cleaning conveyor line and into the cleaning station. To prevent the two sets of gripping and flipping components 520 from interfering with each other, sufficient operating space must be maintained between them, which results in an excessive length of the fourth conveyor line 240, which is not conducive to space saving.

[0114] In this embodiment, the fourth conveyor line 240 includes a first region 2411 and a second region 2412, with the conveying directions of the two regions perpendicular to each other. The second region 2412 covers the lower part of the step on the tilting frame 510, while the first region 2411 is located on one side of the lower part of the step. Furthermore, with the use of the reversing conveyor mechanism 244, no additional clamping mechanism is needed to switch the seedling tray 700 between the unloading station and the cleaning station, further simplifying the overall structure of the production line.

[0115] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automatic seedling raising system, comprising a seedling tower (100) and a conveying device (200) located on one side of the seedling tower (100), characterized in that: The conveying device (200) includes a first conveying line (210), a second conveying line (220), a third conveying line (230), and a fourth conveying line (240) arranged in a rectangular pattern. The first conveyor line (210) is equipped with a germination feeding device (300) for soaking and germinating seeds, and for feeding and loading germinated seeds onto trays. The third conveyor line (230) is equipped with a transfer device (400) for transferring the seedling tray (700) between the conveyor (200) and the seedling tower (100). The fourth conveyor line (240) is equipped with a turning device (500) for harvesting seedlings cultivated in the seedling trays (700), and a cleaning device (600) for cleaning the harvested seedling trays (700) is provided between the fourth conveyor line (240) and the first conveyor line (210); wherein, The fourth conveyor line (240) is a roller conveyor line, which includes a first region (2411) and a second region (2412) with conveying directions perpendicular to each other; and the first region (2411) is provided with a first inlet channel (2413) near the third conveyor line (230), and the second region (2412) is provided with a first outlet channel (2414) near the first conveyor line (210). The bottom of the first inlet and outlet channel area is provided with a number of spaced reversing conveying mechanisms (244). The reversing conveying mechanism (244) includes a housing (2441). The housing (2441) is located between two adjacent rollers in the corresponding area and is connected to a lifting assembly. The housing (2441) is provided with a conveying unit, and the conveying direction of the conveying unit is perpendicular to the conveying direction of its respective area.

2. The automatic seedling raising system according to claim 1, characterized in that: The third conveyor line (230) is divided into two sections by a transplanting roller line (231), which includes a first transplanting roller line (2311) and a second transplanting roller line (2312); wherein, A second inlet channel (2314) is provided at the junction of the first transplanting roller line (2311) and the third conveyor line (230), and a reversing conveyor mechanism (244) is provided in the area of ​​the first transplanting roller line (2311) located in the second inlet channel (2314); the conveying direction of the reversing conveyor mechanism (244) is consistent with the conveying direction of the third conveyor line (230) and perpendicular to the conveying direction of the first transplanting roller line (2311); The second transplanting roller line (2312) is symmetrically arranged with the first transplanting roller line (2311) and the conveying directions are opposite.

3. An automatic seedling raising system according to claim 1 or 2, characterized in that: The germination and feeding device (300) includes a germination mechanism (310) and a feeding mechanism (320) that are interconnected; wherein, The feeding mechanism (320) includes a mounting frame (321), a feeding hopper (322) mounted on the mounting frame (321), and a feeding conveyor line (323); wherein, The feeding hopper (322) is located above the feeding conveyor line (323). A slot (3221) is formed at the discharge port of the feeding hopper (322), and a discharge channel is formed between the slot (3221) and the conveyor belt (3231) of the feeding conveyor line (323). Seeds falling from the discharge port of the hopper (322) and accumulating on the feeding conveyor line (323) are output from the discharge channel and fall into the seedling tray (700) below under the drive of the conveyor belt (3231).

4. An automatic seedling raising system according to claim 3, characterized in that: The hopper (322) is provided with an adjusting plate (3233), which covers the slot (3221) and is used to adjust the height of the discharge channel; The end of the conveyor belt (3231) is provided with a scraper (3234), which has an inclined scraping surface for cleaning seeds adhering to the conveyor belt (3231).

5. An automatic seedling raising system according to claim 3, characterized in that: The germination feeding device (300) further includes a sensing mechanism (330) for identifying the position of the seedling tray (700). The sensing mechanism (330) is mounted on the conveying device (200) and includes a mounting base (331) and a swing plate (332) rotatably mounted on the mounting base (331). The first end (3321) of the swing plate (332) is connected to a sensing block (333), and the mounting base (331) is provided with a sensing probe (334) that cooperates with the sensing block (333). In its natural state, due to gravity, the first end (3321) is in a downward state, causing the sensing block (333) and the sensing probe (334) to approach or contact each other, and the signal is connected; when the second end (3322) of the swing plate (332) is subjected to external force, it forces the first end (3321) to rise, causing the sensing block (333) to move away from the sensing probe (334), and the signal is disconnected.

6. An automatic seedling raising system according to claim 5, characterized in that: The mounting base (331) is a hollow frame structure. The swing plate (332) is hinged to the mounting base (331) through a pin (335), and the pin (335) is equipped with a cotter pin (336). The first end (3321) extends into the inner cavity of the mounting base (331) through an opening on the mounting base (331); the sensing end of the sensing probe (334) is located in the inner cavity of the mounting base (331).

7. An automatic seedling raising system according to claim 3, characterized in that: The germination mechanism (310) includes a germination tank body (311) and an aeration unit (312) for aerating the germination tank body (311). The germination tank body (311) includes a cylindrical body (3111) and a cone (3112) connected vertically. The bottom of the cone (3112) forms a discharge port, and the discharge port is connected to a discharge valve (3115) through a flange pipe (3114). A sleeve (3113) is fitted onto the lower part of the cone (3112), forming a transition space between the sleeve (3113) and the cone (3112); The cone (3112) has several through holes in the area covered by the sleeve (3113), and the bottom of the sleeve (3113) has a drain outlet. The aeration unit (312) includes several aeration heads (3121) arranged in a ring in the transition space. The aeration heads (3121) are connected to aeration pipes (3122). The free end of the aeration pipes (3122) passes through the sleeve (3113) and is connected to an aeration fan.

8. An automatic seedling raising system according to claim 7, characterized in that: The flange pipe (3114) is provided with a number of air blowing holes (31141) arranged in a ring, and the air blowing holes (31141) are connected to an air pump through a pipe. The bottom of the sleeve (3113) is provided with a vibration source (3124) to drive the discharge port of the germination tank body (311) to vibrate.

9. An automatic seedling raising system according to claim 1, characterized in that: The transfer device (400) includes a base (410) and a clamping assembly (420) disposed on the base (410). The clamping assembly (420) includes an X-axis horizontal linear module (421) disposed on the base (410) and a Z-axis vertical linear module (422) slidably disposed on the X-axis horizontal linear module (421). The Z-axis vertical linear module (422) is mounted on a slider located above the X-axis horizontal linear module (421) via a first connecting block (423); The Z-axis vertical linear module (422) is connected to a second connecting block (424) via a slider; each end of the second connecting block (424) is connected to a third connecting block (425); wherein, The second connecting block (424) is located above the X-axis horizontal linear module (421), and the two third connecting blocks (425) are located on both sides of the X-axis horizontal linear module (421), with the bottom of the two third connecting blocks (425) extending to the bottom of the X-axis horizontal linear module (421) and connected together to the clamping component (427).

10. An automatic seedling raising system according to claim 1, characterized in that: The flipping device (500) includes a flipping frame (510) and a lifting assembly (530) and a clamping flipping assembly (520) disposed on the flipping frame (510); wherein, The lifting assembly (530) is located below the second region (2412) and is used to lift multiple seedling trays (700) from the fourth conveyor line (240); The clamping and flipping assembly (520) includes a clamping unit (521) rotatably mounted on a flipping frame (510) and a driving unit (522) for driving the clamping unit (521) to rotate. The clamping unit (521) includes a frame (5211) and several telescopic members (5212) disposed on opposite sides of the frame (5211). Several telescopic members (5212) located on the same side wall of the frame (5211) are connected to a clamping strip (5213). The clamping bar (5213) is provided with stop blocks (5214) at both the upper and lower ends, and a clamping space is formed between the two stop blocks (5214); A set of clamping bars (5213) arranged opposite to each other are used to clamp multiple raised seedling trays (700) simultaneously, and the side of the clamped seedling tray (700) is confined within the corresponding clamping space.

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