Seedling raising device for greenhouse planting and working method thereof

Abstract

The invention relates to a seedling raising device for greenhouse planting and a working method thereof.The seedling raising device comprises end plates, the two sides of the two end plates are connected with connecting plates respectively, pneumatic cylinders are installed on the connecting plates, the telescopic ends of the pneumatic cylinders are connected with side plates, fixed hollow plates are arranged on the inner sides of the side plates, and the two fixed hollow plates and a sliding plate are installed in a sliding mode; a plurality of conveying wheels are rotationally installed on the inner sides of the side plates, the conveying wheels located on the same side plate are connected through a conveying belt, and the hole tray mechanism moves along the conveying belt; the film winding and unwinding structure rapidly completes film mulching and film uncovering operation through cooperative movement of a hollow rotating arm and a telescopic arm, and microclimate environments with different temperatures and humidity can be created in the same greenhouse, so that the growth requirements of various crops are met, accurate temperature control, energy conservation and consumption reduction, planting period prolonging, isolation of different crop areas and cross infection reduction are achieved, and the quality of crops is improved. And carrying out classified culture on seedlings of different varieties and different growth conditions in the same greenhouse.

Description

Technical Field

[0001] The present invention relates to the technical field of greenhouse planting, and particularly relates to a seedling raising device for greenhouse planting and its working method. Background Art

[0002] Greenhouse planting refers to a modern agricultural technology that uses an artificially built light-transmitting and heat-preserving structure to create suitable growth conditions for crops by regulating environmental factors such as temperature, humidity, light, and carbon dioxide concentration. Its core feature is to break the natural season limit, achieve off-season production, annual continuous planting, and precise management, and it is an important part of facility agriculture.

[0003] Existing seedling raising devices are generally cultivated through disposable seedling trays, thus unable to achieve the recycling of seedling trays, resulting in an increase in seedling raising costs. Moreover, when transplanting seedlings, directly pulling the seedlings easily damages the roots of the seedlings. When cultivating crops with different varieties and growth cycles in the same greenhouse, different crops require different temperature and humidity at different stages, and it is easy to cause cross-infection between crops. Summary of the Invention

[0004] The problem solved by the present invention is to provide a seedling raising device for greenhouse planting and its working method, which solves the technical problems that existing seedling raising devices are generally cultivated through disposable seedling trays, thus unable to achieve the recycling of seedling trays, resulting in an increase in seedling raising costs. Moreover, when transplanting seedlings, directly pulling the seedlings easily damages the roots of the seedlings. When cultivating crops with different varieties and growth cycles in the same greenhouse, different crops require different temperature and humidity at different stages, and it is easy to cause cross-infection between crops.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A seedling raising device for greenhouse planting includes end plates. Both sides of the two end plates are respectively connected to connecting plates. An air cylinder is installed on the connecting plates. The telescopic end of the air cylinder is connected to a side plate. A fixed hollow plate is arranged inside the side plate, and two fixed hollow plates are slidably installed with a sliding plate. A plurality of conveying wheels are rotatably installed inside the side plate. The conveying wheels on the same side plate are connected by a conveyor belt, and a seedling tray mechanism moves along the conveyor belt. A spray pipe is installed between the two end plates;

[0007] A winding drum is installed on the top of one of the side plates. A hollow rotating arm is rotatably installed inside the end plate, and the two hollow rotating arms are connected by a connecting shaft. A telescopic arm is telescopically installed inside the hollow rotating arm, and the two telescopic arms are connected to a connecting rod. A winding shaft is rotatably installed inside the winding drum, and a film is wound around the winding shaft. The film is connected to the connecting rod.

[0008] Preferably, a first motor is installed on the side plate. The output end of the first motor is connected to the conveyor wheel at one end of one of the side plates, and a polygonal shaft is slidably installed through the centers of the two conveyor wheels at the other ends of the two side plates.

[0009] Preferably, a cylinder groove is formed in one of the end plates. A baffle is installed through the cylinder groove at the end of the winding drum, a second motor is installed on the baffle, and the second motor is connected to the winding shaft.

[0010] Preferably, a third motor is installed on one of the end plates, and the output end of the third motor is connected to the end of the hollow rotating arm.

[0011] Preferably, a fourth motor is installed on the bottom side of the hollow rotating arm. A threaded rod is installed at the output end of the fourth motor inside the hollow rotating arm. A threaded hole is formed in the telescopic arm, and the threaded hole is threadedly connected to the threaded rod.

[0012] Preferably, the plug tray mechanism includes a frame. Support plates are arranged on both sides of the frame. The frame is provided with a plurality of fixed hole structures in a rectangular array. A plurality of connecting columns perpendicular to the support blocks are installed inside the frame. An installation hole structure is installed on the fixed hole structure, and the hole formed by the fixed hole structure and the installation hole structure is an inverted trapezoidal structure with a wider top and a narrower bottom. A hole top plate is installed outside the top of the installation hole structure.

[0013] Preferably, the fixed hole structure includes two hole bottom shells, the installation hole structure includes two hole top shells, a limiting groove is formed on the top side of the hole bottom shell, and a support block is arranged on the bottom side of the hole top shell.

[0014] Preferably, adjacent installation hole bottom shells are connected by connecting blocks. Connecting blocks are also arranged on the outside of the installation hole bottom shells on both sides of the frame, and the connecting blocks are all slidably installed on the connecting columns. The hole top shells of adjacent installation hole structures on the same horizontal line are connected by support blocks, and the two hole top shells of the same installation hole structure are not connected by support blocks.

[0015] Preferably, a limiting push plate is slidably installed on the connecting column. A threaded sleeve is installed outside the frame, and a movable rod is threadedly installed in the threaded sleeve. The end of the movable rod is rotatably connected to the limiting push plate.

[0016] A working method of a seedling raising device for greenhouse planting, the specific operation steps of the working method are as follows:

[0017] Step 1: Assemble the seedling tray mechanism. Install the mounting hole and cavity structures with different depths onto the fixed hole and cavity structure. At this time, the limit block is snapped into the limit groove. Then, according to the variety of seedlings to be cultivated, use holes and cavities with different depths. Next, install the hole and cavity top plate outside the mounting hole and cavity structure, and support it with the support block. Drive the side plate to move by the telescopic movement of the air cylinder, and adjust the distance between the two side plates to match the width of the seedling tray mechanism. At this time, the winding drum moves in the drum groove, and the drum groove is always kept closed by the baffle. The fourth motor works to drive the rotation of the threaded rod, thereby driving the telescopic arm connected by the thread to move within the hollow rotating arm, and adjusting the matching length of the hollow rotating arm and the telescopic arm;

[0018] Step 2: Place the seedling tray mechanism filled with cultivation soil and seeds on the conveyor belt. Through the operation of the first motor and the cooperation of the polygonal shaft, the transmission of the conveyor wheel and the conveyor belt is realized, thereby driving the seedling tray mechanism to move. At the end of the device, the seedling tray mechanisms are placed into the device in sequence and orderly, and watering and fertilizing are carried out regularly through the spray pipe;

[0019] Step 3: Drive the hollow rotating arm to rotate through the operation of the third motor, and realize the synchronous rotation of the two hollow rotating arms through the connecting shaft. At this time, the telescopic arm drives the connecting rod to swing and move from one end plate to the other end plate. At this time, the film is pulled out from the winding drum and covers the outside of the side plate, and the film is wound and unwound by driving the winding shaft to rotate through the second motor. A closed seedling cultivation space is formed between the end plate, the fixed hollow plate, the sliding plate and the film;

[0020] Step 4: When the seedling cultivation is completed, move the film to the initial position, and at the same time, recycle the film. After removing the seedling tray mechanism at the end of the end plate, the conveyor belt drives the remaining seedling tray mechanisms to move to the end of the end plate, which is convenient for quickly removing all the seedling tray mechanisms. When transplanting the seedlings in the seedling tray mechanism, remove the hole and cavity top plate at this time, and then rotate the movable rod to drive the limit push plate to move. At this time, the hole and cavity bottom shell drives the hole and cavity top shell to move along the connecting column, separating the two hole and cavity bottom shells of the fixed hole and cavity structure and the two hole and cavity top shells of the mounting hole and cavity structure, and then taking out the seedlings from the holes and cavities.

[0021] The beneficial effects of the present invention are as follows: Adopt the modular design of the fixed hole and cavity structure and the replaceable mounting hole and cavity structure. Through the cooperation and installation of the limit groove and the support block, the rapid replacement of holes and cavities with different depths is realized. The inverted trapezoidal hole and cavity structure is combined with the split housing design driven by the movable rod. When transplanting and taking out the seedlings, the hole and cavity bottom shells of the same fixed hole and cavity structure are automatically separated, which is convenient for the rapid separation of the seedlings from the seedling tray mechanism and minimizes the root damage of the seedlings. The overall modular disassembly and assembly design of the seedling tray mechanism is convenient for adjustment according to the types of seedlings;

[0022] The side plates driven by the pneumatic cylinder can adjust the spacing, so that the width of the device can adapt to the plug trays of different specifications. In the process of movement, through the length adjustment of the hollow rotating arm and the telescopic arm, the movement of the fixed hollow plate and the slide plate, and the coordination of the barrel groove and the baffle, it is convenient to always ensure the closedness of the space after lamination during the subsequent lamination. The coordinated design of the conveying wheel, conveyor belt and polygonal shaft realizes the reciprocating movement of the plug tray mechanism, which is convenient for loading and unloading of the plug tray mechanism.

[0023] The film retracting and releasing structure can quickly complete the film covering and removing operations through the coordinated movement of the hollow rotating arm and the telescopic arm, and can create a microclimate environment with different temperature and humidity in the same greenhouse, thereby adapting to the growth needs of various crops, achieving precise temperature control, energy saving and consumption reduction, extending the planting period, isolating different crop areas, reducing cross-infection, and classifying and cultivating seedlings of different varieties and different growth conditions in the same greenhouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the first internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the second internal structure of the present invention;

[0027] Figure 4 It is an overall cross-sectional view of the present invention;

[0028] Figure 5 It is a cross-sectional view of the hollow rotating arm and the telescopic arm of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the hole tray mechanism of the present invention;

[0030] Figure 7 It is a top view of the hole tray mechanism of the present invention;

[0031] Figure 8 It is a cross-sectional view of the hole tray mechanism of the present invention;

[0032] Figure 9 It is a schematic diagram of the installation structure of the fixing hole structure and the installation hole structure of the present invention.

[0033] Legend:

[0034] 1. End plate; 2. Connecting plate; 3. Pneumatic cylinder; 4. Side plate; 5. Fixed hollow plate; 6. Slide plate; 7. Conveyor wheel; 8. Conveyor belt; 9. Spray pipe; 10. Multilateral shaft; 11. First motor; 12. Reel; 13. Drum groove; 14. Baffle; 15. Second motor; 16. Winding shaft; 17. Film; 18. Hollow rotating arm; 19. Telescopic arm; 20. Connecting rod; 21. Connecting shaft; 22. Third motor; 23. Fourth motor; 24. Threaded rod; 25. Threaded hole; 26. Frame; 27. Support plate; 28. Connecting block; 29. Fixed cavity structure; 30. Mounting cavity structure; 31. Cavity bottom shell; 32. Cavity top shell; 33. Limiting block; 34. Limiting groove; 35. Support block; 36. Cavity top plate; 37. Connecting column; 38. Limiting push plate; 39. Movable rod; 40. Threaded sleeve. Detailed implementation manner

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The following gives specific embodiments.

[0037] See Figures 1 to 9 , a seedling raising device for greenhouse planting, including an end plate 1, the two sides of the two end plates 1 are respectively connected to a connecting plate 2, a pneumatic cylinder 3 is installed on the connecting plate 2, the telescopic end of the pneumatic cylinder 3 is connected to a side plate 4, a fixed hollow plate 5 is arranged inside the side plate 4, and the two fixed hollow plates 5 are slidably installed with a slide plate 6. A plurality of conveyor wheels 7 are rotatably installed inside the side plate 4. The conveyor wheels 7 located on the same side plate 4 are connected by a conveyor belt 8, and the tray mechanism moves along the conveyor belt 8. A spray pipe 9 is installed between the two end plates 1;

[0038] A winding drum 12 is installed on the top of one of the side panels 4, a hollow rotating arm 18 is rotatably installed on the inner side of the end panel 1, and the two hollow rotating arms 18 are connected by a connecting shaft 21, a telescopic arm 19 is telescopically installed in the hollow rotating arm 18, and the two telescopic arms 19 are connected to a connecting rod 20, a winding shaft 16 is rotatably installed in the winding drum 12, and a film 17 is wound on the winding shaft 16, and the film 17 is connected to the connecting rod 20, a first motor 11 is installed on the side panel 4, and the output end of the first motor 11 is connected to a transmission wheel 7 at one end of one of the side panels 4 The two transmission wheels 7 at the other ends of the two side plates 4 are connected, and a polygonal shaft 10 is slidably installed at the centers of the two transmission wheels 7 at the other ends of the two side plates 4. A drum groove 13 is opened on one of the end plates 1, and a baffle 14 is installed on the end of the winding drum 12 through the drum groove 13. A second motor 15 is installed on the baffle 14, and the second motor 15 is connected to the winding shaft 16. A third motor 22 is installed on one of the end plates 1, and the output end of the third motor 22 is connected to the end of the hollow rotating arm 18. A fourth motor 23 is installed on the bottom side of the hollow rotating arm 18, and the output end of the fourth motor 23 is located in the hollow A threaded rod 24 is installed in the rotating arm 18, a threaded hole 25 is opened in the telescopic arm 19, and the threaded hole 25 is threadedly connected to the threaded rod 24. The side plate 4 driven by the pneumatic cylinder 3 can adjust the spacing, so that the width of the device can adapt to the hole trays of different specifications. In the process of movement, through the length adjustment of the hollow rotating arm 18 and the telescopic arm 19, the movement of the fixed hollow plate 5 and the slide plate 6, and the cooperation of the barrel groove 13 and the baffle 14, it is convenient for the subsequent lamination to always ensure the closedness of the space after lamination, the conveying wheel 7, the conveyor belt 8 and the polygonal shaft The coordinated design of 10 realizes the reciprocating movement of the plug tray mechanism, which is convenient for loading and unloading the plug tray mechanism. The film 17 retracting and releasing structure quickly completes the film covering and peeling operations through the coordinated movement of the hollow rotating arm 18 and the telescopic arm 19, and can create a microclimate environment with different temperature and humidity in the same greenhouse, thereby adapting to the growth needs of various crops, achieving precise temperature control, energy saving and consumption reduction, extending the planting period, isolating different crop areas, reducing cross infection, and classifying and cultivating seedlings of different varieties and different growth conditions in the same greenhouse.

[0039] The plug tray mechanism includes a frame 26, with support plates 27 arranged on both sides of the frame 26. The frame 26 is provided with a number of fixed hole structures 29 in a rectangular array. A number of connecting columns 37 perpendicular to the support blocks 35 are installed inside the frame 26. An installation hole structure 30 is installed on the fixed hole structure 29, and the hole formed by the fixed hole structure 29 and the installation hole structure 30 is an inverted trapezoidal structure with a wider top and a narrower bottom. A hole top plate 36 is installed on the outer side of the top of the installation hole structure 30. The fixed hole structure 29 includes two hole bottom shells 31, and the installation hole structure 30 includes two hole top shells 32. A limiting groove 34 is opened on the top side of the hole bottom shell 31, and a support block 35 is arranged on the bottom side of the hole top shell 32. Adjacent hole bottom shells 31 of the installation hole are connected by a connecting block 28. Connecting blocks 28 are also arranged on the outer sides of the hole bottom shells 31 of the installation hole located on both sides of the frame 26, and the connecting blocks 28 are all slidably installed with the connecting columns 37. The hole top shells 32 of adjacent installation hole structures 30 on the same horizontal line are connected by support blocks 35, and the two hole top shells 32 of the same installation hole structure 30 are not connected by support blocks 35. A limiting push plate 38 is slidably installed on the connecting column 37. A threaded sleeve 40 is installed on the outer side of the frame 26, and a movable rod 39 is installed with internal threads in the threaded sleeve 40. The end of the movable rod 39 is rotatably connected to the limiting push plate 38. The modular design of the fixed hole structure 29 and the replaceable installation hole structure 30 is adopted. Through the cooperation and installation of the limiting groove 34 and the support block 35, the rapid replacement of holes with different depths is realized. The inverted trapezoidal hole structure is combined with the split shell design driven by the movable rod 39. When transplanting and taking seedlings, the hole bottom shells 31 of the same fixed hole structure 29 are automatically separated, which is convenient for the rapid separation of the seedlings from the plug tray mechanism and minimizes the root damage of the seedlings. The overall modular disassembly and assembly design of the plug tray mechanism is convenient for adjustment according to the types of seedlings.

[0040] Working principle:

[0041] Step 1: Assemble the plug tray mechanism. Install the installation hole structures 30 with different depths onto the fixed hole structures 29. At this time, the limiting block 33 is snapped into the limiting groove 34. At this time, holes with different depths are used according to the variety of seedlings to be grown. Then install the hole top plate 36 on the outside of the installation hole structure 30 and support it through the support block 35. Drive the side plate 4 to move by the telescopic movement of the air cylinder 3, and adjust the distance between the two side plates 4 to match the width of the plug tray mechanism. At this time, the winding drum 12 moves in the drum groove 13, and the drum groove 13 is always kept closed by the baffle 14. The fourth motor 23 works to drive the rotation of the threaded rod 24, and then drives the telescopically arm 19 connected by threads to move in the hollow rotating arm 18, and adjusts the matching length of the hollow rotating arm 18 and the telescopically arm 19;

[0042] Step 2: Place the plug tray mechanism filled with cultivation soil and seeds on the conveyor belt 8. Through the operation of the first motor 11 and the cooperation of the multi-sided shaft 10, the transmission of the conveyor wheel 7 and the conveyor belt 8 is realized, thereby driving the movement of the plug tray mechanism. The plug tray mechanism is sequentially and orderly placed into the device at the end of the device, and watering and fertilizing are regularly carried out through the spray pipe 9.

[0043] Step 3: Drive the hollow rotating arm 18 to rotate through the operation of the third motor 22, and realize the synchronous rotation of the two hollow rotating arms 18 through the connecting shaft 21. At this time, the telescopic arm 19 drives the connecting rod 20 to swing from one end plate 1 to the other end plate 1. At this time, the film 17 is pulled out from the film winding drum 12 and covers the outside of the side plate 4, and the winding shaft 16 is driven to rotate through the second motor 15 to wind and unwind the film 17. A closed seedling raising space is formed among the end plate 1, the fixed hollow plate 5, the sliding plate 6 and the film 17.

[0044] Step 4: When the seedling raising is completed, move the film 17 to the initial position, and at the same time, the film 17 is recovered. After removing the plug tray mechanism at the end of the end plate 1, the conveyor belt 8 drives the remaining plug tray mechanisms to move to the end of the end plate 1, which is convenient for quickly removing all the plug tray mechanisms. When transplanting the seedlings in the plug tray mechanism, at this time, remove the hole top plate 36, and then rotate the movable rod 39 to drive the limit push plate 38 to move. At this time, the hole bottom shell 31 drives the hole top shell 32 to move along the connecting column 37, separating the two hole bottom shells 31 of the fixed hole structure 29 and the two hole top shells 32 of the mounting hole structure 30, and then taking out the seedlings from the holes.

[0045] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A seedling raising device for greenhouse planting, characterized in that, It includes end plates (1). The two end plates (1) are respectively connected to connecting plates (2) on both sides. An air cylinder (3) is installed on the connecting plate (2). The telescopic end of the air cylinder (3) is connected to a side plate (4). A fixed hollow plate (5) is arranged inside the side plate (4). The two fixed hollow plates (5) are slidably installed with a sliding plate (6). A number of conveyor wheels (7) are rotatably installed inside the side plate (4). The conveyor wheels (7) located on the same side plate (4) are connected by a conveyor belt (8). And the plug tray mechanism moves along the conveyor belt (8). A spray pipe (9) is installed between the two end plates (1). A winding drum (12) is installed at the top of one of the side plates (4). A hollow rotating arm (18) is rotatably installed inside the end plate (1). The two hollow rotating arms (18) are connected by a connecting shaft (21). A telescopic arm (19) is telescopically installed inside the hollow rotating arm (18). The two telescopic arms (19) are connected to a connecting rod (20). A winding shaft (16) is rotatably installed inside the winding drum (12). And a film (17) is wound around the winding shaft (16). The film (17) is connected to the connecting rod (20).

2. The seedling raising device for greenhouse planting according to claim 1, characterized in that, A first motor (11) is installed on the side plate (4). The output end of the first motor (11) is connected to a conveyor wheel (7) at one end of one of the side plates (4). And a polygonal shaft (10) is slidably installed through the centers of the two conveyor wheels (7) at the other ends of the two side plates (4).

3. The seedling raising device for greenhouse planting according to claim 2, wherein, A cylindrical groove (13) is formed in one of the end plates (1). A baffle (14) is installed through the cylindrical groove (13) at the end of the winding drum (12). A second motor (15) is installed on the baffle (14). And the second motor (15) is connected to the winding shaft (16).

4. The seedling raising device for greenhouse planting according to claim 3, characterized in that, A third motor (22) is installed on one of the end plates (1). And the output end of the third motor (22) is connected to the end of the hollow rotating arm (18).

5. The seedling raising device for greenhouse planting according to claim 4, wherein A fourth motor (23) is installed on the bottom side of the hollow rotating arm (18). A threaded rod (24) is installed at the output end of the fourth motor (23) inside the hollow rotating arm (18). A threaded hole (25) is formed inside the telescopic arm (19). And the threaded hole (25) is threadedly connected to the threaded rod (24).

6. The seedling raising device for greenhouse planting according to claim 5, wherein, The plug tray mechanism includes a frame (26). Support plates (27) are arranged on both sides of the frame (26). A number of fixed hole structures (29) are arranged in a rectangular array on the frame (26). A number of connecting columns (37) perpendicular to the support blocks (35) are installed inside the frame (26). An installation hole structure (30) is installed on the fixed hole structure (29). And the hole formed by the fixed hole structure (29) and the installation hole structure (30) is an inverted trapezoidal structure with a wider top and a narrower bottom. A hole top plate (36) is installed outside the top of the installation hole structure (30).

7. The seedling raising device for greenhouse planting according to claim 6, characterized in that, The fixed hole structure (29) includes two hole bottom shells (31), the mounting hole structure (30) includes two hole top shells (32), a limiting groove (34) is formed on the top side of the hole bottom shell (31), and a support block (35) is arranged on the bottom side of the hole top shell (32).

8. The seedling raising device for greenhouse planting according to claim 7, wherein, Adjacent mounting hole bottom shells (31) are connected by a connecting block (28). Connecting blocks (28) are also arranged on the outer sides of the mounting hole bottom shells (31) on both sides of the frame (26), and the connecting blocks (28) are all slidably mounted on a connecting column (37). Adjacent hole top shells (32) of the mounting hole structures (30) on the same horizontal line are connected by support blocks (35), and the two hole top shells (32) of the same mounting hole structure (30) are not connected by support blocks (35).

9. The seedling raising device for greenhouse planting according to claim 8, characterized in that, A limiting push plate (38) is slidably mounted on the connecting column (37). A threaded sleeve (40) is mounted on the outer side of the frame (26), and a movable rod (39) is threadedly mounted in the threaded sleeve (40). The end of the movable rod (39) is rotatably connected to the limiting push plate (38).

10. The working method of a seedling raising device for greenhouse planting according to claim 9, characterized in that, The specific operation steps of this working method are as follows: Step 1: Assemble the seedling tray mechanism. Install the mounting hole structures (30) with different depths onto the fixed hole structure (29). At this time, the limiting block (33) is snapped into the limiting groove (34). At this time, holes with different depths are used according to the seedling cultivation variety. Then, install the hole top plate (36) on the outer side of the mounting hole structure (30) and support it through the support block (35). Drive the side plate (4) to move by the telescopic movement of the air cylinder (3), and adjust the distance between the two side plates (4) to match the width of the seedling tray mechanism. At this time, the winding drum (12) moves in the drum groove (13), and the drum groove (13) is always kept closed by the baffle (14). The fourth motor (23) works to drive the threaded rod (24) to rotate, thereby driving the telescopically connected telescopic arm (19) to move in the hollow rotating arm (18) and adjusting the matching length of the hollow rotating arm (18) and the telescopic arm (19); Step 2: Place the seedling tray mechanism filled with cultivation soil and seeds on the conveyor belt (8). Through the operation of the first motor (11) and the cooperation of the multi-sided shaft (10), the transmission of the transmission wheel (7) and the conveyor belt (8) is realized, thereby driving the seedling tray mechanism to move. At the end of the device, the seedling tray mechanisms are sequentially and orderly placed into the device, and watering and fertilizing are regularly carried out through the spray pipe (9); Step 3: Drive the hollow rotating arm (18) to rotate through the operation of the third motor (22), and realize the synchronous rotation of the two hollow rotating arms (18) through the connecting shaft (21). At this time, the telescopic arm (19) drives the connecting rod (20) to swing from one end plate (1) to the other end plate (1). At this time, the film (17) is pulled out from the winding drum (12) and covers the outer side of the side plate (4). Moreover, the second motor (15) drives the winding shaft (16) to rotate to wind and unwind the film (17). A closed seedling cultivation space is formed between the end plate (1), the fixed hollow plate (5), the sliding plate (6), and the film (17); Step 4: After the seedling raising is completed, move the film (17) to the initial position, and at the same time, recycle the film (17). After removing the plug tray mechanism at the end of the end plate (1), the conveyor belt (8) drives the remaining plug tray mechanisms to move to the end of the end plate (1), facilitating the quick removal of all plug tray mechanisms. When transplanting the seedlings in the plug tray mechanism, at this time, remove the hole top plate (36), and then rotate the movable rod (39) to drive the limit push plate (38) to move. At this time, the hole bottom shell (31) drives the hole top shell (32) to move along the connecting column (37), separating the two hole bottom shells (31) of the fixed hole structure (29) and the two hole top shells (32) of the installation hole structure (30), and then taking out the seedlings from the holes.

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