A leaf cutting mechanism with a spore detection function and a seedling cutting method

Abstract

The present application belongs to the technical field of seedling raising, and provides a leaf cutting mechanism with a bud detection function and a seedling raising leaf cutting method. The leaf cutting mechanism comprises: a mounting seat, a first knife seat and a second knife seat being oppositely arranged on the mounting seat; a knife head and a first elastic member being arranged on the first knife seat, and a first through hole being formed on the first knife seat; a knife groove matched with the knife head being arranged on the second knife seat, and a second through hole being formed on the second knife seat; when the first knife seat approaches the second knife seat, the first elastic member presses the leaf blade on the second knife seat, and the knife head extends into the knife groove to cut the leaf blade; a plurality of detection elements are arranged on the second knife seat; and a centering assembly for clamping and positioning the seedling branch during detection is arranged on the side of the second knife seat away from the first knife seat. The present application solves the technical problem that, in the prior art, when the seedling branch is subjected to leaf cutting operation, operation failure occurs to damage the bud, resulting in the seedling being damaged and affecting the survival rate of cutting, and effectively protects the seedling to ensure the survival rate of cutting.

Description

Technical Field

[0001] This invention relates to the field of seedling technology, and in particular to a leaf-cutting mechanism with bud detection function and a leaf-cutting method for seedling cultivation. Background Technology

[0002] Cuttings are one of the methods of plant propagation. It involves taking a section of the plant's vegetative organs and inserting it into loose, moist soil or fine sand. The plant then uses its regenerative ability to root and sprout new branches, thus becoming a new plant. Cuttings are taken from the mother plant and must be of a superior variety, grow vigorously, and be free from pests and diseases.

[0003] In existing technologies, when selecting cuttings for propagation, some leaves must be retained; if all leaves are removed, it will be difficult for the cuttings to take root. For species with larger leaves, some of the larger leaves can be cut off to avoid excessive water transpiration from the seedlings. However, since the buds are close to the larger leaves, it is easy to make mistakes and damage the buds when pruning the seedlings, which will result in seedling injury and affect the survival rate of the cuttings. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a leaf-pruning mechanism and a seedling leaf-pruning method with bud detection function, in order to solve the technical problem in the prior art that when pruning leaves of seedling branches, operational errors occur that damage buds, resulting in seedling injury and affecting the survival rate of cuttings.

[0005] To achieve the above and other related objectives, the present invention provides a leaf-cutting mechanism with spore detection function, comprising:

[0006] A mounting base is provided with a first tool holder and a second tool holder opposite to each other on the mounting base, and the first tool holder is movable relative to the second tool holder on the mounting base;

[0007] The first blade holder is provided with a blade for cutting leaves and a first elastic element for pressing the leaves. The first blade holder is provided with a first through hole for passing through the seedling branch.

[0008] The second blade holder is provided with a blade groove that matches the blade head, and the second blade holder is provided with a second through hole for the seedling to pass through;

[0009] When the first cutter head moves toward the second cutter head, the first elastic member presses the blade against the second cutter head, and the cutter head extends into the cutter groove to cut the blade.

[0010] The second cutter holder is provided with multiple sets of detection elements along the circumference of the second through hole, for detecting the position of buds on the seedling branches;

[0011] The second blade holder is provided with a centering component on the side opposite to the first blade holder for clamping and positioning the seedling branch during testing. The centering component includes at least two coaxially rotating centering parts, and each of the two centering parts is provided with a third through hole for the seedling branch to pass through. The third through hole gradually shrinks along the direction tangent to the rotation of the centering part, and the two third through holes shrink in opposite directions.

[0012] Optionally, the cutter head has an annular structure, and a plurality of the first elastic elements are arranged circumferentially along the inner edge of the cutter head. The length of the first elastic elements is greater than or equal to the length of the cutter head, and the cutting groove is an annular groove that matches the cutter head.

[0013] Optionally, the first blade holder is further provided with a first limiting member for assisting in pressing and limiting the blade during the shearing process, and the first limiting member is arranged circumferentially along the outer edge of the blade head.

[0014] Optionally, the diameter of the second through hole gradually decreases in the direction away from the first cutter head, so as to open the leaves when the seedling passes through the second through hole.

[0015] Optionally, the centering assembly further includes a drive arm for driving the centering part to rotate. The centering part is provided with first elongated holes, and the two first elongated holes are arranged intersectingly. The intersection of the two first elongated holes is located on the line connecting the center of the first through hole and the center of the centering part's rotating shaft. The drive arm is connected to the intersection of the two first elongated holes by a first drive pin. The drive arm is provided with a bent part, and a second drive pin passes through the bent part of the drive arm and the second tool holder. The drive arm can rotate with the second drive pin as the rotation fulcrum.

[0016] Optionally, the centering assembly further includes a driving member, which is connected to the driving arm via a connector. The connector and the driving arm are rotatably connected, and the connector and the driving member are fixedly connected. One end of the driving member is connected to a first driving unit for providing driving force.

[0017] Optionally, a second elastic element for pulling the drive arm is provided between the drive member and the drive arm, and hooks are respectively provided on the drive member and the drive arm, with the second elastic element connecting the two hooks.

[0018] Optionally, the centering assembly further includes a second limiting member for limiting the drive arm. The second limiting member is provided with a blocking part, which is located below the connector. A third drive pin is provided at the rotatable connection between the connector and the drive arm, and the third drive pin extends above the blocking part. The second limiting member is provided with a second elongated hole, and the drive arm is connected to the second elongated hole through the second drive pin. One end of the second limiting member is connected to a second drive unit for driving the second limiting member to move.

[0019] Optionally, the third through hole includes an expansion portion and a reduction portion. During the rotation of the two centering portions, the expansion portions of the two third through holes form a first circular hole, and the reduction portions of the two third through holes form a second circular hole. The diameter of the first circular hole is larger than the diameter of the second circular hole.

[0020] Based on the same inventive concept, this invention also provides a method for pruning leaves in seedling cultivation, which uses a leaf-pruning mechanism with bud detection function as described above to perform bud detection and leaf pruning on seedlings. The method includes:

[0021] The seedling branches are passed through the first, second, and third through holes in sequence, starting from the tip, and the location of the buds on the seedling branches is detected by the detection element.

[0022] The seedling branch is clamped at the center of the second through hole by the centering component. According to the position of the bud detected by the detection element, the clamping position of the seedling branch is adjusted so that the leaves near the bud that are larger than the diameter of the second through hole are spread out in the circumference of the second through hole.

[0023] Drive the first cutter holder to move closer to the second cutter holder, so that the first elastic element presses the blade around the second through hole, and the cutter head extends into the cutter groove to cut the blade.

[0024] Drive the first blade holder away from the second blade holder and reset it, so that the blade head and the blade groove are separated. At the same time, the centering component releases the seedling branches and removes the seedling to complete the leaf pruning.

[0025] As described above, the leaf-cutting mechanism with spore detection function of the present invention has at least the following beneficial effects:

[0026] The seedling is passed sequentially through the first, second, and third through holes, starting from the tip of the branch. The position of the buds on the seedling branch is detected by a detection element, and the seedling branch is adjusted according to the bud position. Then, the seedling branch is clamped by a centering component to prevent the buds on the seedling branch from being pinched and accidentally damaged. At the same time, excessively large leaves near the buds are spread out circumferentially in the second through hole to separate the buds from the leaves. By driving the first cutter seat to move closer to the second cutter seat, the first elastic element presses the leaves firmly onto the second cutter seat. The cutter head moves into the cutter groove to cut the leaves, avoiding accidental damage to the buds due to operational errors, effectively protecting the seedlings and ensuring the survival rate of the cuttings. Attached Figure Description

[0027] Figure 1 The diagram shown is a structural schematic of an exemplary embodiment of the present invention.

[0028] Figure 2 A partial cross-sectional view is shown as an exemplary embodiment of the present invention.

[0029] Figure 3 The diagram shown is a structural schematic of the first tool holder in an exemplary embodiment of the present invention.

[0030] Figure 4 The diagram shown is a first-view structural schematic of the second tool holder in an exemplary embodiment of the present invention.

[0031] Figure 5 The diagram shown is a second-view structural schematic of the second tool holder in an exemplary embodiment of the present invention.

[0032] Figure 6 The diagram shown is a structural schematic of the centering component in an exemplary embodiment of the present invention.

[0033] Figure 7 The diagram shown is a flowchart of a seedling leaf-pruning method, which is another exemplary embodiment of the present invention.

[0034] In the figure: 1-First tool holder; 1a-First through hole; 1b-First elastic element; 1c-Tool head; 1d-First limiting element; 2-Second tool holder; 2a-Second through hole; 2b-Tool groove; 3-Centering assembly; 4-Drive mechanism; 5-Mounting base; 6-Centering part; 7-Detection element; 8-First elongated hole; 9-First drive pin; 10-Third through hole; 11-Second drive pin; 12-Second elastic element; 13-Drive arm; 14-Second elongated hole; 15-Connector; 16-Second limiting element; 17-Driver; 18-Third drive pin; 19-First drive unit; 20-Second drive unit. Detailed Implementation

[0035] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0036] Please see Figures 1 to 7 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0037] Before describing the embodiments of the present invention in detail, the application environment of the present invention will be described first. The technology of the present invention is mainly applied to seedling cultivation systems. The present invention addresses the technical problem of damage to buds caused by operational errors during leaf pruning of seedling branches, which leads to seedling injury and affects the survival rate of cuttings.

[0038] Please see reading Figures 1 to 6This embodiment provides a seedling leaf pruning device, including: a mounting base 5, on which a first blade holder 1 and a second blade holder 2 are disposed opposite each other, the first blade holder 1 being movable relative to the second blade holder 2 on the mounting base 5; the first blade holder 1 is provided with a blade head 1c for pruning leaves and a first elastic element 1b for pressing leaves, and the first blade holder 1 has a first through hole 1a for passing through seedling branches; the second blade holder 2 is provided with a blade groove 2b, which matches the blade head 1c, and the second blade holder 2 has a second through hole 2a for passing through seedlings; when the first blade holder 1 moves closer to the second blade holder 2, the first elastic element 1c... 2. Press the leaf firmly onto the second cutter holder 2, and insert the cutter head 1c into the cutter groove 2b to cut the leaf; multiple sets of detection elements 7 are arranged on the second cutter holder 2 along the circumference of the second through hole 2a to detect the position of buds on the seedling branches; a centering component 3 is provided on the side of the second cutter holder 2 away from the first cutter holder 1 for clamping and positioning the seedling branches during detection. The centering component 3 includes at least two coaxially rotating centering parts 6, and each of the two centering parts 6 has a third through hole 10 for passing through the seedling branches. The third through hole 10 gradually shrinks along the direction of rotation tangential to the centering part 6, and the two third through holes 10 shrink in opposite directions.

[0039] By passing the seedling sequentially through the first through hole 1a, the second through hole 2a, and the third through hole 10, starting from the tip of the branch, the position of the buds on the seedling branch is detected by the detection element 7. Based on the detected bud position, the seedling branch is adjusted, and then the centering component 3 clamps the seedling branch to prevent buds from being pinched and accidentally damaged. At the same time, excessively large leaves near the buds are spread out circumferentially in the second through hole 2a to separate the buds from the leaves and prevent leaves from being missed. By driving the first cutter seat 1 to move closer to the second cutter seat 2, the first elastic element 1b presses the leaves firmly onto the second cutter seat 2, and the cutter head 1c extends into the cutter groove 2b to cut the leaves. This avoids the situation of accidentally damaging the buds due to operational errors, effectively protects the seedlings, and ensures the survival rate of the cuttings.

[0040] In some embodiments, the cutter head 1c has an annular structure, and the cutter groove 2b is an annular groove that matches the cutter head 1c. When the first cutter holder 1 moves closer to the second cutter holder 2, the cutter head 1c extends into the cutter groove 2b and cuts the blade extending out of the annular groove along the circumference of the annular groove.

[0041] In some embodiments, a plurality of first elastic elements 1b are arranged circumferentially along the inner edge of the cutter head 1c. The length of the first elastic elements 1b is greater than or equal to the length of the cutter head 1c. The first cutter holder 1 is also provided with a first limiting element 1d for assisting in pressing and limiting the blade during the shearing process. The first limiting element 1d is arranged circumferentially along the outer edge of the cutter head 1c. The first limiting element 1d and the first elastic elements 1b are arranged in a group. When the first cutter holder 1 moves toward the second cutter holder 2 and drives the cutter head 1c to extend into the cutter groove 2b, the first elastic elements 1b and the first limiting element 1d press the blade on both sides of the cutter groove 2b on the second cutter holder 2 to prevent the blade from deviating during the shearing process, resulting in poor shearing effect, thereby ensuring that the blade can be sheared in place. The first elastic elements 1b and the first limiting element 1d can be implemented by elastic elements such as springs, which is not limited here.

[0042] In some embodiments, the diameter of the second through hole 2a gradually decreases in the direction away from the first cutter holder 1, which is used to open the leaves when the seedling passes through the second through hole 2a. Since the leaves on the seedling branches are usually messy and disordered, by gradually reducing the diameter of the second through hole 2a, the oversized leaves on the seedling branches are blocked and opened in the circumference of the second through hole 2a, effectively avoiding the situation where the leaves cannot be cut due to curling.

[0043] In some embodiments, the surface of the second blade holder 2 that contacts the first elastic member 1b is an inclined surface. The inclined surface can protect the part of the blade that needs to be retained when the first elastic member 1b presses the blade, so that the blade avoids the inclined surface and prevents the first elastic member 1b from crushing or damaging the part of the blade that needs to be retained.

[0044] In some embodiments, a drive mechanism 4 for driving the first tool holder 1 to move closer to or away from the second tool holder 2 is connected to the first tool holder 1. The drive mechanism 4 can be implemented by a drive element that can provide power, such as a cylinder or a motor, and this is not limited here.

[0045] In some embodiments, the centering assembly 3 further includes a drive arm 13 for driving the centering part 6 to rotate. The centering part 6 has first elongated holes 8, which are intersecting. The intersection of the two first elongated holes 8 is located on the line connecting the center of the first through hole 1a and the center of the centering part 6's rotating shaft. The drive arm 13 is connected to the intersection of the two first elongated holes 8 via a first drive pin 9. The drive arm 13 has a bent portion, and a second drive pin 11 passes through the bent portion of the drive arm 13 and the second tool holder 2. The drive arm 13 can rotate around the second drive pin 11 as a fulcrum. The centering assembly 3 also includes a drive member 17, which has a gap with the drive arm 13 and is connected to the drive arm 13 via a connector 15. The connector 15 and the drive arm 13 are rotatably connected, and the connector 15 and the drive member 17 are fixedly connected. One end of the drive member 17 is connected to a first drive unit 19 for providing driving force. The moving unit 19 can be implemented by components that can provide driving force, such as cylinders or motors, and this is not limited here. A second elastic element 12 for pulling the driving arm 13 is provided between the driving member 17 and the driving arm 13. Hooks are provided on the driving member 17 and the driving arm 13 respectively, and the second elastic element 12 is connected between the two hooks. The centering assembly 3 also includes a second limiting member 16 for limiting the driving arm 13. The second limiting member 16 is provided with a blocking part, which is located below the connecting member 15. A third driving pin 18 is provided at the rotatable connection between the connecting member 15 and the driving arm 13. The third driving pin 18 extends above the blocking part. A second elongated hole 14 is provided on the second limiting member 16. A second driving unit 20 for driving the second limiting member to move is connected to one end of the second limiting member 16. The second driving unit 20 can be implemented by components that can provide driving force, such as cylinders or motors, and this is not limited here.

[0046] Specifically, the downward movement of the driving member 17 and the connecting member 15 by the first driving unit 19 causes the second elastic member 12 to be pulled by force, thereby pulling the driving arm 13. Simultaneously, through the rotational connection between the connecting member 15 and the driving arm 13, the driving arm 13 rotates around the second driving pin 11 as the fulcrum. By changing the elastic force of the second elastic member 12, the driving force of the driving arm 13 can be changed, thus meeting the clamping requirements of different types of seedlings. At the same time, the elastic force of the second elastic member 12 buffers the driving force of the driving arm 13 when clamping the seedlings. The second elastic member 12 can be implemented using elastic elements such as springs; this is not limited here. During the rotation of the boom 13, the connecting member 15 and the driving member 17 move synchronously and approach the second limiting member 16. The third driving pin 18, which passes through the rotating connection between the connecting member 15 and the driving arm 13, contacts the blocking part on the second limiting member 16, thereby limiting the rotation distance of the driving arm 13. This controls the clamping force of the centering part 6 and prevents the driving arm 13 from traveling beyond the range, which would result in excessive clamping force and damage to the seedling branches. This further protects the seedling. When it is necessary to reset the centering part 6, the second driving unit 20 drives the second limiting member 16 to move, causing the second limiting member 16 to give way, and the blocking part no longer blocks the third driving pin 18.

[0047] In some embodiments, the third through hole 10 includes an expansion portion and a reduction portion. During the rotation of the two centering portions 6, the expansion portions of the two third through holes 10 form a first circular hole, and the reduction portions of the two third through holes 10 form a second circular hole. The diameter of the first circular hole is larger than the diameter of the second circular hole. The two centering portions 6 are driven to rotate coaxially in opposite directions by the drive arm 13, so that the expansion portions of the third through holes 10 on the two centering portions 6 come together to form the first circular hole, which facilitates the passing of the seedling branches through the third through hole 10. The two centering portions 6 are driven to rotate coaxially in opposite directions by the drive arm 13, so that the reduction portions of the third through holes 10 on the two centering portions 6 come together to form the second circular hole, which clamps the seedling branches at the center of the third through hole 10.

[0048] In summary, the specific usage and function of this embodiment are as follows:

[0049] First, the seedling is passed sequentially through the first through hole 1a, the second through hole 2a, and the third through hole 10, starting from the tip of the branch. The position of the buds on the seedling branch is detected by the detection element 7. Based on the detected bud position, the clamping position of the seedling branch is adjusted, and then the drive component 17 and the connecting component 15 are moved downwards. This causes the second elastic component 12 to be pulled by the force, which in turn causes the drive arm 13 to rotate around the second drive pin 11 as the rotation fulcrum. Through the rotation of the drive arm 13, the first drive pin 9 is driven to move linearly at the intersection of the two first elongated holes 8 on the centering part 6. This, in turn, causes the two centering parts 6 to rotate coaxially in opposite directions, so that the two centering parts 6... The reduced portions of the first through hole 1a on the core 6 come together to form a second round hole, which clamps the seedling branch in the center of the third through hole 10. During the rotation of the drive arm 13, the third drive pin 18, which passes through the rotational connection between the drive arm 13 and the connector 15, contacts the blocking portion of the second limiting member 16, thereby limiting the rotation distance of the drive arm 13 and controlling the clamping force of the centering part 6. This prevents the travel distance of the drive arm 13 from exceeding the range, which would result in excessive clamping force. This completes the clamping of the seedling branch by the centering component 3, preventing the buds on the seedling branch from being pinched during the clamping and positioning process, thus protecting the seedling.

[0050] While the centering component 3 completes the clamping, it causes the oversized leaves near the buds to spread out circumferentially in the second through hole 2a, separating the buds and leaves and preventing the leaves from being missed. The driving mechanism 4 drives the first cutter 1 to move closer to the second cutter 2, so that the first elastic member 1b and the first limiting member 1d press the leaves tightly against both sides of the cutter groove 2b on the second cutter 2. The first cutter 1 continues to move forward, so that the cutter head 1c moves into the cutter groove 2b to cut the leaves. This avoids the situation of accidentally damaging the buds due to operational errors, effectively protects the seedlings, and ensures the survival rate of the cuttings.

[0051] In another embodiment, this application also provides a method for pruning leaves during seedling cultivation; please refer to [link to relevant documentation]. Figure 7 This method can be applied to a seedling leaf-cutting assembly as shown in the above embodiments.

[0052] In some embodiments, a seedling leaf pruning method includes at least steps S710 to S740, which are described in detail below:

[0053] Step S710: Pass the seedling branch through the first through hole, the second through hole, and the third through hole in sequence, starting from the tip, and detect the position of the buds on the seedling branch using a detection element;

[0054] Step S720: The seedling branch is clamped at the center of the second through hole by the centering component. According to the position of the bud detected by the detection element, the clamping position of the seedling branch is adjusted so that the leaves near the bud that are larger than the diameter of the second through hole are spread out in the circumference of the second through hole.

[0055] Step S730: Drive the first cutter holder to move closer to the second cutter holder, so that the first elastic element presses the blade around the second through hole, and the cutter head extends into the cutter groove to cut the blade.

[0056] In step S740, the first blade holder is driven away from the second blade holder and reset, so that the blade head and the blade groove are separated. At the same time, the centering component releases the seedling branches and removes the seedling to complete the leaf pruning.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A leaf-cutting mechanism with spore detection function, characterized in that, include: A mounting base is provided with a first tool holder and a second tool holder opposite to each other on the mounting base, and the first tool holder is movable relative to the second tool holder on the mounting base; The first blade holder is provided with a blade for cutting leaves and a first elastic element for pressing the leaves. The first blade holder is provided with a first through hole for passing through the seedling branch. The second blade holder is provided with a blade groove that matches the blade head. The second blade holder has a second through hole for the seedling to pass through. The diameter of the second through hole gradually decreases in the direction away from the first blade holder, so as to open the leaves when the seedling passes through the second through hole. The blade head has an annular structure. Multiple first elastic elements are arranged circumferentially along the inner edge of the blade head. The length of the first elastic elements is greater than or equal to the length of the blade head. The blade groove is an annular groove that matches the blade head. When the first cutter head moves toward the second cutter head, the first elastic member presses the blade against the second cutter head, and the cutter head extends into the cutter groove to cut the blade. The second cutter holder is provided with multiple sets of detection elements along the circumference of the second through hole, for detecting the position of buds on the seedling branches; The second blade holder has a centering component on the side opposite to the first blade holder for clamping and positioning the seedling branch during testing. The centering component includes at least two coaxially rotating centering parts, each of which has a third through hole for the seedling branch to pass through. The third through hole gradually narrows along the direction of rotation tangential to the centering part, and the two third through holes narrow in opposite directions. The third through hole includes an expanding part and a contracting part. During the rotation of the two centering parts, the expanding part of the two third through holes forms a first circular hole, and the contracting part of the two third through holes forms a second circular hole. The diameter of the first circular hole is larger than the diameter of the second circular hole. The centering assembly further includes a drive arm for driving the centering part to rotate. The centering part is provided with first elongated holes, and the two first elongated holes are arranged intersectingly. The intersection of the two first elongated holes is located on the line connecting the center of the first through hole and the center of the centering part's rotating shaft. The drive arm is connected to the intersection of the two first elongated holes by a first drive pin. The drive arm is provided with a bent part, and a second drive pin passes through the bent part of the drive arm and the second tool holder. The drive arm can rotate with the second drive pin as the rotation fulcrum.

2. The leaf-cutting mechanism with spore detection function according to claim 1, characterized in that: The first cutter holder is also provided with a first limiting member for assisting in pressing and limiting the blade during the shearing process. The first limiting member is arranged circumferentially along the outer edge of the cutter head.

3. The leaf-cutting mechanism with spore detection function according to claim 1, characterized in that: The centering assembly further includes a driving component, which is connected to the driving arm via a connector. The connector and the driving arm are rotatably connected, and the connector and the driving component are fixedly connected. One end of the driving component is connected to a first driving unit for providing driving force.

4. The leaf-cutting mechanism with spore detection function according to claim 3, characterized in that: A second elastic element for pulling the drive arm to rotate is provided between the drive member and the drive arm. Hooks are provided on the drive member and the drive arm respectively, and the second elastic element is connected between the two hooks.

5. A leaf-cutting mechanism with spore detection function according to claim 3, characterized in that: The centering assembly further includes a second limiting member for limiting the drive arm. The second limiting member is provided with a blocking part, which is located below the connector. A third drive pin is provided at the rotatable connection between the connector and the drive arm, and the third drive pin extends above the blocking part. The second limiting member is provided with a second elongated hole, and the drive arm is connected to the second elongated hole through the second drive pin. One end of the second limiting member is connected to a second drive unit for driving the second limiting member to move.

6. A method for pruning leaves during seedling cultivation, comprising using a leaf-pruning mechanism with bud detection function as described in any one of claims 1-5 to perform bud detection and leaf pruning on seedlings, characterized in that, The method includes: The seedling branches are passed through the first, second, and third through holes in sequence, starting from the tip, and the location of the buds on the seedling branches is detected by the detection element. The seedling branch is clamped at the center of the second through hole by the centering component. According to the position of the bud detected by the detection element, the clamping position of the seedling branch is adjusted so that the leaves near the bud that are larger than the diameter of the second through hole are spread out in the circumference of the second through hole. Drive the first cutter holder to move closer to the second cutter holder, so that the first elastic element presses the blade around the second through hole, and the cutter head extends into the cutter groove to cut the blade. Drive the first blade holder away from the second blade holder and reset it, so that the blade head and the blade groove are separated. At the same time, the centering component releases the seedling branches and removes the seedling to complete the leaf pruning.

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