Automatic leaf cutting equipment for tobacco seedling raising in small shed

Abstract

The invention discloses automatic leaf cutting equipment for tobacco seedling raising in a small shed, which comprises a conveying mechanism, a leaf cutting mechanism, a supporting platform and a conveying belt, moving wheels are arranged on the supporting platform, and a bracket for putting down a grounding support is arranged on the supporting platform; the leaf cutting mechanism comprises a shell, a material conveying volute, a driving motor and a cutting tool, the material conveying volute, the driving motor and the cutting tool are arranged in the shell, the cutting tool rotates to cut tobacco leaves, and waste leaves are conveyed to the collecting structure through the material conveying volute. The supporting platform is provided with the moving wheels, equipment is rapidly transferred and stably fixed, tobacco seedlings are stably conveyed to a leaf cutting station through the conveying belt, seedling tray inclination or collision damage caused by manual carrying is avoided, the cutting tool rotates at a high speed through the driving motor and is matched with the guiding design of the conveying volute, and uniform leaf cutting is achieved; the leaf cutting height consistency is guaranteed, the uniformity of tobacco seedlings is improved, and the cut waste leaves are directionally pushed to a discharging opening through a spiral structure of the conveying volute and guided into a collecting structure.

Description

Technical Field

[0001] This invention relates to the field of tobacco seedling technology, and more specifically to an automatic leaf-cutting device for tobacco seedling cultivation in small greenhouses. Background Technology

[0002] Tobacco seedling cultivation is a crucial step in the tobacco planting process. The quality of seedling cultivation directly affects the subsequent growth and yield of tobacco. In the process of tobacco seedling cultivation in small greenhouses, in order to control the growth rate of seedlings, promote root development, and ensure that seedlings are uniform, it is necessary to perform multiple leaf pruning operations on tobacco seedlings.

[0003] Currently, manual leaf cutting is the most common method for cutting tobacco seedlings. However, traditional manual leaf cutting methods usually use simple spring-loaded leaf cutters, which require multiple people to operate together. This results in problems such as high labor intensity, low efficiency, and high cost. Manual operation can also lead to uneven leaf cutting height, making it difficult to ensure the uniformity of tobacco seedlings. This invention proposes a new solution to address these problems. Summary of the Invention

[0004] To overcome at least one of the aforementioned drawbacks, this invention provides an automatic leaf-pruning device for tobacco seedling cultivation in small greenhouses. The objective of this invention can be achieved by employing the following technical solution:

[0005] This invention provides an automatic leaf-pruning device for tobacco seedling cultivation in a small greenhouse, characterized in that it comprises:

[0006] A conveying mechanism includes a support platform and a conveyor belt. The support platform is equipped with movable wheels and a bracket for lowering a ground support.

[0007] The leaf-cutting mechanism includes a housing, a conveying volute, a drive motor, and a cutting blade disposed within the housing. The drive motor is connected to the cutting blade and is used to drive the cutting blade to rotate and cut the tobacco leaves, so that the waste leaves are conveyed to the collection structure through the discharge port on the conveying volute.

[0008] In one embodiment, the collection structure includes a fixed frame and a support frame. The fixed frame is connected to the outer shell, and the support frame is detachably connected to the fixed frame. The support frame is provided with a collection bag or a receiving box for accommodating waste leaves. The inlet end of the collection bag or the receiving box is aligned with the outlet of the conveying volute.

[0009] In one possible implementation, the fixed frame is provided with a plurality of slide rails, and the support frame is provided with a plurality of sliders on the side facing the fixed frame. The support frame and the fixed frame are detachably connected by the sliders sliding within the slide rails.

[0010] In one possible implementation, the receiving box is a folding mechanism that can be folded and contracted or extended and unfolded to adjust the storage volume.

[0011] In one possible implementation, the receiving box is provided with an expansion box, which is connected to and movably connected to the internal storage space of the receiving box. The expansion box is provided with an adjustment limiting structure, the first end of which is connected to the expansion box, and the other end of which is movably connected to the receiving box. The expansion box can be adjusted by means of the adjustment limiting structure to adjust the portion of the expansion box embedded in the receiving box, thereby adjusting the storage volume.

[0012] In one possible implementation, the adjusting limiting structure includes an L-shaped support rod disposed on the expansion box, one end of the support rod being connected to the expansion box, and the other end of the support rod being detachably connected to the receiving box by bolts. The support frame is provided with a plurality of screw holes adapted to the bolts along the moving direction of the expansion box.

[0013] In one possible implementation, a baffle structure is further included, which is connected to the support platform or the outer shell. The baffle structure includes baffle plates symmetrically arranged on both sides of the conveyor belt to stop the tobacco leaves to be cut on the conveyor belt moving in the non-conveying direction.

[0014] In one possible implementation, a height adjustment structure is provided, comprising a frame disposed on the support platform, an adjustable bracket provided on the frame, the adjustable bracket being connected to the housing and movably connected to the frame, and the distance between the cutting blade and the conveyor belt being adjusted by adjusting the height of the adjustable bracket.

[0015] In one possible implementation, the height adjustment structure further includes a screw threadedly connected to the frame, one end of the screw being connected to the adjustable bracket, and one end of the screw having a handle. The screw can rotate and feed along the vertical direction to adjust the height position of the leaf-cutting mechanism through the adjustable bracket. A plurality of guide rods are fixedly provided on the top of the frame, and a plurality of limiting sleeves for the guide rods to pass through are fixedly provided on the top of the adjustable bracket to guide the lifting trajectory of the adjustable bracket.

[0016] In one possible implementation, an integrated control system is also included, comprising an emergency stop switch, a travel detection switch, and a speed adjustment switch. The emergency stop switch is used for emergency braking, the travel detection switch is used for travel detection, and the speed adjustment switch is used for adjusting the motor speed.

[0017] The beneficial technical effects of this invention are as follows: According to this disclosure, the automatic leaf-cutting equipment for tobacco seedling cultivation in a small greenhouse, equipped with a support platform and wheels, enables rapid transfer and stable fixation of the equipment, adapting to uneven ground conditions in the seedling cultivation area and significantly improving operational flexibility. The conveyor belt and seedling tray are matched in size, ensuring that the tobacco seedlings are transported smoothly to the leaf-cutting station, avoiding tilting or collision damage to the seedling trays caused by manual handling. The cutting blades rotate at high speed through a drive motor, and with the guiding design of the feeding volute, the leaves are cut evenly, ensuring consistent leaf-cutting height and improving the uniformity of the tobacco seedlings. The spiral structure of the feeding volute pushes the cut waste leaves in a directional manner to the discharge port and guides them into the collection structure, preventing waste leaves from accumulating and affecting subsequent operations or breeding diseases. Mechanical cutting is more stable than manual operation, avoiding fluctuations in leaf-cutting height caused by operator fatigue, significantly improving the root vitality and growth uniformity of the tobacco seedlings. The centralized waste leaf recycling design reduces residues in the greenhouse, maintains a clean seedling environment, and reduces the risk of disease transmission. Attached Figure Description

[0018] The following are given by way of example and without limitation in the accompanying drawings:

[0019] Figure 1 A front view schematic diagram of the overall structure of an embodiment of the present invention is shown;

[0020] Figure 2 A rear view schematic diagram of the overall structure of an embodiment of the present invention is shown;

[0021] Figure 3 A side view of the overall structure of an embodiment of the present invention is shown;

[0022] Figure 4 A bottom view of the outer shell structure according to an embodiment of the present invention is shown;

[0023] Figure 5 A schematic diagram showing the separation of the fastening hole and fastener structure according to an embodiment of the present invention is shown;

[0024] Figure 6 A schematic diagram showing the separation of the fixing frame and support frame structure according to an embodiment of the present invention is shown;

[0025] Figure 7 A schematic diagram of the slide rail structure according to an embodiment of the present invention is shown;

[0026] Figure 8 A schematic diagram of the slider structure according to an embodiment of the present invention is shown;

[0027] Figure 9 A schematic diagram of the receiving box and expansion box structure according to an embodiment of the present invention is shown;

[0028] Figure 10 A cross-sectional view of the receiving box and expansion box structure according to an embodiment of the present invention is shown.

[0029] In the diagram: 1. Conveying mechanism; 2. Leaf-cutting mechanism; 3. Collection structure; 4. Adjustable limit structure; 5. Height adjustment structure; 6. Material-blocking structure; 7. Integrated control system; 11. Support platform; 12. Conveyor belt; 13. Moving wheel; 14. Bracket; 21. Outer shell; 22. Conveying volute; 23. Drive motor; 24. Cutting tool; 31. Fixing frame; 32. Support frame; 33. Collection bag; 34. Receiving box; 35. Expansion box; 36. Slide rail; 37. Slider; 41. Support rod; 42. Bolt; 51. Frame; 52. Adjustable bracket; 53. Screw; 54. Handle; 55. Guide rod; 56. Limiting sleeve; 61. Material-blocking plate; 71. Emergency stop switch; 72. Stroke detection switch; 73. Speed ​​adjustment switch. Detailed Implementation

[0030] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to enable those skilled in the art to understand and clarify the technical solution of the present invention more clearly, the embodiments described below are not limited thereto. The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0031] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] The first aspect of the invention, as Figures 1-10As shown, an automatic leaf-cutting device for tobacco seedling cultivation in a small greenhouse is provided, including a conveying mechanism 1 and a leaf-cutting mechanism 2. The conveying mechanism 1 includes a support platform 11 and a conveyor belt 12. The support platform 11 is provided with moving wheels 13 and a bracket 14 for placing ground support. The leaf-cutting mechanism 2 includes a housing 21 and a feeding volute 22, a drive motor 23 and a cutting blade 24 disposed inside the housing 21. The drive motor 23 is connected to the cutting blade 24 to drive the cutting blade 24 to rotate and cut the tobacco leaves, so that the waste leaves are conveyed to the collection structure 3 through the discharge port on the feeding volute 22.

[0034] The automatic leaf-cutting equipment for tobacco seedling cultivation in this embodiment, equipped with a support platform 11 and casters 13, enables rapid transfer and stable fixation of the equipment, adapting to uneven ground conditions in the seedling cultivation area and significantly improving operational flexibility. The conveyor belt 12 is matched with the size of the seedling trays, ensuring that the seedlings are transported smoothly to the leaf-cutting station, avoiding tilting or collision damage to the seedling trays caused by manual handling. The cutting blades 24 rotate at high speed through the drive motor 23, and with the guiding design of the feeding volute 22, the leaves are cut evenly, ensuring consistent leaf-cutting height and improving the uniformity of the seedlings. The spiral structure of the feeding volute 22 pushes the cut waste leaves in a directional manner to the discharge port and guides them into the collection structure 3, preventing waste leaves from accumulating and affecting subsequent operations or breeding diseases. Mechanical cutting is more stable than manual operation, avoiding fluctuations in leaf-cutting height caused by operator fatigue, significantly improving the root vitality and growth uniformity of the seedlings. The centralized waste leaf recycling design reduces residues in the greenhouse, maintains a clean seedling environment, and reduces the risk of disease transmission.

[0035] The support platform 11 is equipped with a conveyor motor and a conveyor track. The conveyor belt 12 is set on the conveyor track. Driven by the conveyor motor and the conveyor track, the conveyor belt 12 can automatically transport the tobacco seedling trays to the lower part of the leaf-cutting mechanism 2, making the cutting of tobacco seedlings more automated.

[0036] The cutting blade 24 can be made of stainless steel multi-blade arc blade, and the blade is set at a certain angle. The inclined blade cuts into the tobacco leaves with an oblique trajectory, which reduces the area of ​​the leaves being squeezed and reduces the damage rate of seedlings. At the same time, the inclined surface of the blade can form a guide channel, and the broken leaves produced by cutting will naturally slide down the inclined surface of the blade into the collection structure 3, avoiding the broken leaves from getting stuck between the leaves or covering the growth point.

[0037] The conveying volute 22 is mounted on the cutting tool 24, which not only protects the cutting tool 24, but also restricts the diffusion path of the broken leaves under the rotation of the cutting tool 24. It uses centrifugal force to guide the broken leaves generated by shearing into the collection structure 3, thus preventing the broken leaves from flying around in a disorderly manner.

[0038] In one possible implementation, such as Figures 4-10 As shown, the collection structure 3 includes a fixed frame 31 and a support frame 32. The fixed frame 31 is connected to the outer shell 21, and the support frame 32 is detachably connected to the fixed frame 31. The support frame 32 is provided with a collection bag 33 or a collection box 34 for accommodating waste leaves. The inlet end of the collection bag 33 or the collection box 34 is aligned with the discharge port of the conveying volute 22.

[0039] Both the fixed frame 31 and the support frame 32 are provided with inlets, and the opening of the collecting bag 33 or the receiving box 34 is connected to the inlet of the support frame 32 and aligned with the discharge port of the conveying volute. The sheared leaf fragments slide down into the inside of the collecting bag 33 or the receiving box 34 as the cutting tool 24 rotates.

[0040] Among them, the material collection bag 33, relying on its flexible material and breathable properties, can preserve the integrity of the broken leaves to the greatest extent. When the bag is not in use, it can be folded into small pieces, occupying less space. Moreover, it can be adaptively expanded according to the collection capacity of broken leaves to meet the collection needs of broken leaves.

[0041] The inner wall of the receiving box 34 is smooth, which can prevent the seepage and residue of leaf sap. When cleaning, it can be wiped with a damp cloth or rinsed with water, reducing the risk of mold growth. At the same time, the structure of the receiving box 34 is more stable, less prone to breakage and leaf leakage, and has higher stability in long-term use.

[0042] In one possible implementation, such as Figures 7-8 The fixed frame 31 shown is provided with several slide rails 36, and the support frame 32 is provided with several sliders 37 on the side facing the fixed frame 31. The support frame 32 and the fixed frame 31 are detachably connected by the sliders 37 being inserted into the slide rails 36.

[0043] The support frame 32 is securely mounted on the fixed frame 31 by the connection of the slide rail 36 and the slider 37. The slide rail 36 and the slider 37 are slidably connected, so the support frame 32 can be easily detached from the fixed frame 31. This makes it easy to remove the collection bag 33 or the collection box 34 from one side of the outer shell 21 for dumping the collected leaf debris. At the same time, the inside of the slide rail 36 is a T-shaped groove, and the slider 37 is a T-shaped block. This means that after the slide rail 36 and the slider 37 are connected, they can only move up and down, which makes the support of the support frame 32 more stable.

[0044] In one possible implementation, the receiving box 34 can be a folding mechanism, capable of folding and shrinking or extending and unfolding to adjust the storage volume.

[0045] Among them, after the volume of the receiving box 34 is adjusted, it gets rid of the limitation of fixed volume, flexibly responds to the leaf cutting needs of different stages and scales of tobacco seedling cultivation, and avoids the overflow of broken leaves.

[0046] In one possible implementation, such as Figure 9 and Figure 10 As shown, the receiving box 34 is equipped with an expansion box 35. The expansion box 35 is connected to and movably connected to the internal storage space of the receiving box 34. The expansion box 35 is equipped with an adjustment limiting structure 4. The first end of the adjustment limiting structure 4 is connected to the expansion box 35, and the other end of the adjustment limiting structure 4 is movably connected to the receiving box 34. By adjusting the limiting structure 4, the portion of the expansion box 35 embedded in the receiving box 34 can be adjusted.

[0047] The expansion box 35 can also be equipped with a fan and a protective net. The fan creates negative pressure, which allows the broken leaves to enter the receiving box 34 more smoothly from the conveying volute 22.

[0048] In this process, after the expansion box 35 is pulled outward from the inside of the receiving box 34, the outward extension of the expansion box 35 effectively increases the internal volume of the receiving box 34. Compared with the fixed volume setting of the receiving box 34, the addition of the expansion box 35 expands the volume of the receiving box 34. Furthermore, the adjustment and limiting structure 4 can fix the expansion box 35, ensuring the stability of the expansion box 35, preventing the expansion box 35 from shifting and causing the volume to decrease, and further preventing broken leaves from overflowing outward from the opening of the support frame 32.

[0049] In one possible implementation, such as Figure 9 and Figure 10 As shown, the adjustment limit structure 4 includes an L-shaped support rod 41 set on the expansion box 35. One end of the support rod 41 is connected to the expansion box 35, and the other end of the support rod 41 is detachably connected to the receiving box 34 by bolts 42. The support frame 32 is provided with a number of screw holes that are adapted to the bolts 42 along the moving direction of the expansion box 35.

[0050] In this process, after the expansion box 35 is pulled out from the receiving box 34 for volume adjustment, it is fixed by bolt 42 and screw hole connection. The bolt 42 is tightly engaged with the screw hole through the thread, which can provide a large axial preload, effectively resisting the displacement of the expansion box 35 caused by vibration, impact or load, and ensuring that it is fixed and does not loosen.

[0051] In one possible implementation, such as Figures 1-5 As shown, it also includes a baffle structure 6, which is connected to the support platform 11 or the outer shell 21. The baffle structure 6 includes baffle plates 61 symmetrically arranged on both sides of the conveyor belt 12 to stop the tobacco leaves to be cut on the conveyor belt 12 moving in the non-conveying direction.

[0052] Among them, the baffle plate 61 is fixed by the connection with the outer shell 21 and the support frame on the support platform, so that the two baffle plates 61 are supported and erected above the conveyor belt 12. When the conveyor belt 12 transports the tobacco seedling box, the two baffle plates 61 can form a stop on both sides, effectively preventing the tobacco seedling box from falling off the conveyor belt 12. At the same time, the baffle plate 61 extends to both sides of the conveying volute 22, which can block the broken leaves generated when the cutting blade 24 is cutting, further preventing the broken leaves from splashing outward.

[0053] In one possible implementation, such as Figures 1-3 As shown, the automatic leaf-cutting equipment for tobacco seedling cultivation in a small greenhouse also includes a height adjustment structure 5. The height adjustment structure 5 includes a frame 51 set on a support platform 11. An adjustable bracket 52 is provided on the frame 51. The adjustable bracket 52 is connected to the outer shell 21 and is movably connected to the frame 51. By adjusting the height of the adjustable bracket 52, the distance between the cutting blade 24 and the conveyor belt 12 is adjusted.

[0054] The outer shell 21 is connected to the adjustable bracket 52. When the adjustable bracket 52 is raised and lowered inside the frame 51, it can drive the outer shell 21 to be raised and lowered synchronously. After the outer shell 21 is raised and lowered, the cutting height of the cutting blade 24 is adjusted to meet the needs of different tobacco seedling cutting heights.

[0055] In one possible implementation, such as Figures 1-3 As shown, the height adjustment structure 5 also includes a screw 53 threadedly connected to the frame 51. One end of the screw 53 is connected to the adjustable bracket 52. One end of the screw 53 is provided with a handle 54. The screw 53 can rotate and feed along the vertical direction to adjust the height position of the leaf-cutting mechanism 2 through the adjustable bracket 52. Several guide rods 55 are fixedly provided on the top of the frame 51. Several limiting sleeves 56 are fixedly provided on the top of the adjustable bracket 52 for the guide rods 55 to pass through, which are used to guide the lifting trajectory of the adjustable bracket 52.

[0056] The height adjustment structure 5 uses a screw 53 for transmission and lifting. The screw 53 is rotated by the operating handle 54, thereby adjusting the position of the cutting blade 24 inside the outer casing 21. This makes the height adjustment of the leaf-cutting mechanism 2 more precise and controllable, avoiding excessive cutting that could damage seedlings or insufficient cutting that could result from height deviation. At the same time, the leaf-cutting mechanism 2 and the collecting structure 3 usually have a certain weight and will vibrate during operation. The rigid structure of the screw 53 can provide stable support, and the threaded structure of the screw 53 has a self-locking function. After being adjusted to the target height, even if it is subjected to continuous weight or slight vibration, it will not slide down on its own like a spring-type adjustment, and can maintain a stable height for a long time, avoiding safety hazards caused by height deviation during operation.

[0057] The screw 53 is rotatably connected to the adjustable bracket 52. The screw 53 will not drive the adjustable bracket 52 to rotate during rotation. At the same time, the sliding connection between the guide rod 55 and the limiting sleeve 56 can provide a limiting function for the adjustable bracket 52. When the adjustable bracket 52 is height adjusted, the limiting sleeve 56 slides on the guide rod 55 so that the adjustable bracket 52 can be raised and lowered vertically and stably, avoiding the offset of the adjustable bracket 52 when the screw 53 drives the raising and lowering adjustment.

[0058] In one possible implementation, such as Figure 2 As shown, the automatic leaf-cutting equipment for tobacco seedling cultivation in small greenhouses also includes an integrated control system 7. The integrated control system 7 includes an emergency stop switch 71, a travel detection switch 72, and a speed adjustment switch 73. The emergency stop switch 71 is used for emergency braking, the travel detection switch 72 is used for travel detection, and the speed adjustment switch 73 is used to adjust the motor speed.

[0059] The emergency stop switch 71, the travel detection switch 72, and the speed adjustment switch 73 are electrically connected to the drive motor 23. The emergency stop switch 71 can be used to start and stop the drive motor 23, and the speed adjustment switch 73 can be used to adjust the speed of the drive motor 23. Since the thickness, toughness, and moisture content of tobacco leaves vary greatly from seedling to mature seedling, a fixed speed cannot meet the needs of all stages. Adjusting the speed of the drive motor 23 can accurately match the characteristics of the leaves and more flexibly match the scale of operation.

[0060] The travel detection switch 72 can detect the travel of the drive motor 23 to prevent equipment damage or safety accidents caused by the drive motor 23 running beyond its travel range.

[0061] The outer shell 21 is also equipped with an infrared anti-collision sensor. The infrared anti-collision sensor can identify the position in real time before the cutting blade 24 comes into contact with the tobacco seedling box. It can sense the position and density of the leaves in advance, so that the blade only acts on the target leaves, eliminating the damage to the seedlings caused by a one-cut. It is especially suitable for the precision needs of tobacco seedling cultivation, avoiding accidental cutting and damaging the seedlings, and preventing the cutting blade 24 from colliding with the box.

[0062] The integrated control system 7 is equipped with a lithium battery pack and a connector. The lithium battery pack can supply power to the emergency stop switch 71, the travel detection switch 72, the drive motor 23, and the transmission motor installed in the support platform 11. Alternatively, the connector can be used to supply power to an external power source to meet the needs of different environments.

[0063] This embodiment provides the operating steps of an automatic leaf-pruning device for tobacco seedling cultivation in a small greenhouse, specifically including:

[0064] S1. The operating handle 54 drives the screw 53 to rotate, and the height difference between the cutting tool 24 inside the housing 21 and the conveyor belt 12 is adjusted by the adjustable bracket 52;

[0065] S2. Start the conveyor mechanism 1 and the cutting blade 24, place the tobacco seedling box on the conveyor belt 12 for conveying, and the rotating cutting blade 24 cuts the tobacco leaves. The cut waste leaves are then transported to the collection structure 3.

[0066] S3. After the tobacco leaves have been cut for a period of time, disassemble the collection structure 3 and pour out the waste leaves.

[0067] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0069] In view of the detailed description above, these and other changes can be made to these embodiments, and this written description includes embodiments of the best mode that disclose the invention. The patent scope of the invention is defined by the claims, which are not limited by this disclosure. The scope of protection of the invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the invention disclosed herein, based on the technical solutions and concepts of the invention, are within the scope of protection of the invention.

Claims

1. An automatic leaf-pruning device for tobacco seedling cultivation in a small greenhouse, characterized in that, include: The conveying mechanism (1) includes a support platform (11) and a conveyor belt (12). The support platform (11) is provided with a moving wheel (13) and a bracket (14) for lowering the ground support. The leaf-cutting mechanism (2) includes a housing (21) and a conveying volute (22), a drive motor (23) and a cutting blade (24) disposed within the housing (21). The drive motor (23) is connected to the cutting blade (24) to drive the cutting blade (24) to rotate and cut the tobacco leaves, so that the waste leaves are conveyed to the collection structure (3) through the discharge port on the conveying volute (22).

2. The automatic leaf-pruning device for tobacco seedling cultivation in a greenhouse according to claim 1, characterized in that, The collection structure (3) includes a fixed frame (31) and a support frame (32). The fixed frame (31) is connected to the outer shell (21). The support frame (32) is detachably connected to the fixed frame (31). The support frame (32) is provided with a collection bag (33) or a collection box (34) for accommodating waste leaves. The feed end of the collection bag (33) or the collection box (34) is aligned with the discharge port of the conveying volute (22).

3. The automatic leaf-pruning device for tobacco seedling cultivation in a greenhouse according to claim 2, characterized in that, The fixed frame (31) is provided with a plurality of slide rails (36), and the support frame (32) is provided with a plurality of sliders (37) on the side facing the fixed frame (31). The support frame (32) and the fixed frame (31) are detachably connected by the sliders (37) being inserted into the slide rails (36).

4. The automatic leaf-pruning device for tobacco seedling cultivation in a greenhouse according to claim 2, characterized in that, The receiving box (34) is a folding mechanism that can be folded and contracted or extended and unfolded to adjust the storage volume.

5. The automatic leaf-pruning device for tobacco seedling cultivation in a greenhouse according to claim 2, characterized in that, The receiving box (34) is provided with an expansion box (35). The expansion box (35) is connected to the internal storage space of the receiving box (34) and is movably connected to the receiving box (34). The expansion box (35) is provided with an adjustment limiting structure (4). The first end of the adjustment limiting structure (4) is connected to the expansion box (35), and the other end of the adjustment limiting structure (4) is movably connected to the receiving box (34). The portion of the expansion box (35) embedded in the receiving box (34) can be adjusted through the adjustment limiting structure (4) to adjust the storage volume.

6. The automatic leaf-pruning device for tobacco seedling cultivation in a small greenhouse according to claim 5, characterized in that, The adjustment limiting structure (4) includes an L-shaped support rod (41) provided on the expansion box (35). One end of the support rod (41) is connected to the expansion box (35), and the other end of the support rod (41) is detachably connected to the receiving box (34) by bolts (42). The support frame (32) is provided with a plurality of screw holes adapted to the bolts (42) along the moving direction of the expansion box (35).

7. The automatic leaf-pruning device for tobacco seedling cultivation in a greenhouse according to claim 1, characterized in that, It also includes a baffle structure (6), which is connected to the support platform (11) or the outer shell (21). The baffle structure (6) includes baffle plates (61) symmetrically arranged on both sides of the conveyor belt (12) to stop the tobacco leaves to be cut on the conveyor belt (12) moving in the non-conveying direction.

8. The automatic leaf-pruning device for tobacco seedling cultivation in a greenhouse according to any one of claims 1-7, characterized in that, Also includes; The height adjustment structure (5) includes a frame (51) mounted on the support platform (11), an adjustable bracket (52) mounted on the frame (51), the adjustable bracket (52) being connected to the outer shell (21) and movably connected to the frame (51), and the distance between the cutting tool (24) and the conveyor belt (12) being adjusted by adjusting the height of the adjustable bracket (52).

9. The automatic leaf-pruning device for tobacco seedling cultivation in a small greenhouse according to claim 8, characterized in that, The height adjustment structure (5) also includes a screw (53) threadedly connected to the frame (51). One end of the screw (53) is connected to the adjustable bracket (52). One end of the screw (53) is provided with a handle (54). The screw (53) can rotate and feed along the vertical direction to adjust the height position of the leaf-cutting mechanism (2) through the adjustable bracket (52). Several guide rods (55) are fixedly provided on the top of the frame (51). Several limiting sleeves (56) are fixedly provided on the top of the adjustable bracket (52) for the guide rods (55) to pass through, which are used to guide the lifting trajectory of the adjustable bracket (52).

10. The automatic leaf-pruning device for tobacco seedling cultivation in a small greenhouse according to claim 8, characterized in that, It also includes an integrated control system (7), which includes an emergency stop switch (71), a travel detection switch (72) and a speed adjustment switch (73). The emergency stop switch (71) is used for emergency braking, the travel detection switch (72) is used for travel detection, and the speed adjustment switch (73) is used to adjust the motor speed.

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