A device for positioning and clamping rootstock and scion for plug seedling grafting

Abstract

The application discloses a stock scion alignment clamping device for plug seedling grafting, and relates to the technical field of plug seedling grafting, which comprises a supporting plate, a plurality of first through holes are formed in the top of the supporting plate, a positioning groove is formed in the top of the supporting plate, and a butt plate is slidably connected in the positioning groove. The stock scion alignment clamping device for plug seedling grafting provides stable support before insertion through the supporting frame, and the supporting frame is automatically removed during insertion, the continuous guiding effect of the center clamping plate during the whole insertion process is matched, the scion is ensured to be vertically inserted into the stock grafting port in a precise posture, the insertion depth is uniform, the automatic folding and clamping of the first arc-shaped clamping plate from both sides are matched, the whole-process automation from alignment, insertion to fixation is realized, human resources are completely liberated, the grafting operation efficiency and the survival rate of grafted seedlings are remarkably improved, and the device is especially suitable for factory and large-scale seedling production.

Description

Technical Field

[0001] This invention relates to grafting technology for plug seedlings, specifically to a rootstock and scion alignment clamping device for grafting plug seedlings. Background Technology

[0002] Grafting of seedlings in plug trays is an important technique in protected horticulture to improve crop resistance and yield, and it is widely used in the large-scale seedling production of economic crops such as vegetables and fruit trees. In grafting, the precise alignment and fixation of the rootstock and scion seedlings is a crucial step; the accuracy of alignment and the stability of the clamping directly affect the grafting survival rate and the quality of seedling growth later on. Currently, most seedling bases in China still mainly use manual methods for grafting. Operators must hold the rootstock and scion seedlings by hand, relying on visual observation and experience to align, insert, and fix them with grafting clips. The entire process is highly dependent on operator skill and concentration.

[0003] However, manual grafting has many inherent drawbacks. During the process, seedlings are prone to displacement, bending, or bark damage due to hand tremors or uneven force, leading to problems such as misalignment and inconsistent insertion depth, which seriously affect the grafting survival rate. Furthermore, manual operation is inefficient; a skilled worker can only graft a limited number of times per day, making it difficult to meet the production demands of large-scale intensive seedling cultivation. Prolonged, high-intensity work can also cause operator fatigue, further reducing grafting quality and consistency. In addition, with the increasing shortage of rural labor and continuously rising labor costs, traditional manual grafting methods are no longer suitable for the urgent requirements of modern factory-style seedling cultivation for high efficiency, high quality, and low cost. Therefore, there is an urgent need to develop an automated grafting device that can automatically align, precisely insert, and reliably fix the rootstock and scion to replace manual operation and improve the standardization and production efficiency of grafting operations. Summary of the Invention

[0004] The purpose of this invention is to provide a rootstock and scion alignment clamping device for grafting seedlings in plug trays, so as to solve the problem of low grafting efficiency caused by manual operation in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rootstock-scion alignment clamping device for grafting seedlings in plug trays, comprising a support plate, a plurality of first through holes on the top of the support plate, a positioning groove on the top of the support plate, a butt joint plate slidably connected in the positioning groove, a first telescopic drive member fixedly connected to the top of the butt joint plate, an installation plate fixedly connected to the output end of the first telescopic drive member, a plurality of second through holes on the top of the installation plate, a plurality of clamping boxes fixedly connected to the top of both the support plate and the installation plate, a transmission ring rotatably connected in the clamping box, a plurality of arc-shaped transmission grooves on the top of the transmission ring, a transmission column slidably connected in the arc-shaped transmission grooves, a transmission plate slidably connected to the top of the transmission column and the clamping box, a central clamping plate fixedly connected to one side of the transmission plate, and a drive mechanism for driving the transmission ring to rotate around its own axis connected to the outer surface of the transmission ring;

[0006] The bottom of the mounting plate is fixedly connected to a second telescopic drive component, and the output end of the second telescopic drive component is fixedly connected to a support frame that is slidably connected to the mounting plate.

[0007] The top of the support plate is fixedly connected to a plurality of third telescopic drive components, the output end of the third telescopic drive components is fixedly connected to a first transmission frame, the top of the support plate is fixedly connected to a plurality of fourth telescopic drive components, the output end of the fourth telescopic drive components is fixedly connected to a second transmission frame, and a plurality of first arc-shaped clamping plates are fixedly connected to both the first transmission frame and the second transmission frame.

[0008] Furthermore, a plurality of electromagnets are fixedly connected to the first arc-shaped clamping plate, and iron plates are adsorbed on the inner surface of each electromagnet. A second arc-shaped clamping plate is fixedly connected to one side of the iron plate, and two permanent magnet blocks are fixedly connected to one side of the second arc-shaped clamping plate.

[0009] Furthermore, multiple support discs are fixedly connected to the support frame, and a cutting blade is fixedly connected to the bottom of the support disc.

[0010] Furthermore, the driving mechanism includes a transmission gear ring fixedly connected to the outer surface of the transmission ring, a first gear meshing with the outer surface of the transmission gear ring, a transmission shaft rotatably connected to the clamping box being fixedly sleeved in the middle of the first gear, a second gear being fixedly sleeved on the outer surface of the transmission shaft, a transmission rack slidably connected to the clamping box being meshed with the outer surface of the second gear, a connecting plate being fixedly connected to one side of the transmission rack, and a fifth telescopic driving member being fixedly connected to one side of the connecting plate.

[0011] Furthermore, a plurality of sixth telescopic drive components are fixedly connected to the support plate, the output end of the sixth telescopic drive component is fixedly connected to the bottom of the support plate, and the bottom end of the sixth telescopic drive component is fixedly connected to a base plate.

[0012] Furthermore, a rubber buffer pad is fixedly connected to the inner surface of the central clamping plate.

[0013] Furthermore, rubber buffer pads are fixedly connected to the inner surfaces of both the first arc-shaped clamping plate and the second arc-shaped clamping plate.

[0014] Furthermore, the inner walls of both the first and second through holes are fixedly connected with flexible protective sleeves, which are made of silicone material.

[0015] Compared with the prior art, the rootstock and scion alignment clamping device for grafting seedlings in plug trays provided by the present invention has the following beneficial effects:

[0016] By using a single fifth telescopic drive component in conjunction with a gear rack and pinion linkage mechanism with an arc-shaped groove, the synchronous radial retraction of the central clamping plates within multiple clamping boxes is achieved. Only one power source is needed to simultaneously center and align the rootstock and scion of all grafting units. This not only significantly reduces the number of power components and lowers equipment manufacturing costs, but also ensures a high degree of consistency and synchronicity in the clamping actions of each grafting unit, effectively preventing seedling displacement or damage caused by asynchronous clamping. Simultaneously, the support frame provides stable support before grafting and automatically moves out during grafting. Combined with the continuous guiding effect of the central clamping plate throughout the grafting process, it ensures that the scion is inserted vertically into the rootstock grafting interface with a precise posture and uniform insertion depth. Furthermore, the automatic closing clamping from both sides by the first arc-shaped clamping plate achieves full automation from alignment and insertion to fixation, completely freeing up manpower and significantly improving grafting efficiency and seedling survival rate. It is particularly suitable for factory-scale, large-scale seedling production.

[0017] By integrating a support disc and cutting blade onto the support frame, the device automatically and precisely cuts the top of the rootstock before grafting, combining the opening and grafting processes into one. This eliminates the need for manual pre-opening, significantly reducing process steps and manual operations. The relative accuracy between the cutting position and the subsequent grafting position is extremely high, resulting in a neat and consistent grafting interface, providing excellent conditions for precise scion insertion. Simultaneously, the dual attraction of the electromagnet and permanent magnet allows for quick disassembly and replacement of the second arc-shaped clamping plate and strong locking and fixation of the grafting position. This not only allows for flexible replacement of the clamping plate according to seedling specifications, expanding the device's versatility, but also provides double protection by maintaining clamping force through permanent magnet attraction in the event of an unexpected power outage. Furthermore, rubber buffer pads and flexible silicone protective sleeves provide comprehensive flexible protection for the seedling surface, preventing mechanical damage and effectively promoting rapid healing of the grafting interface, ensuring high-quality survival of the grafted seedlings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a first perspective view of the external structure of the present invention;

[0020] Figure 2 This is a second perspective view of the external structure of the present invention;

[0021] Figure 3 This is a first perspective view of the internal structure of the present invention;

[0022] Figure 4 This is a second perspective view of the internal structure of the present invention;

[0023] Figure 5 This is a perspective view of the internal structure of the clamping box of the present invention;

[0024] Figure 6 For the present invention Figure 4 Enlarged view of A in the middle;

[0025] Figure 7 For the present invention Figure 4 A magnified view of B in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Support plate; 2. First through hole; 3. Positioning groove; 4. Connecting plate; 5. First telescopic drive component; 6. Mounting plate; 7. Second through hole; 8. Clamping box; 9. Transmission ring; 10. Arc-shaped transmission groove; 11. Transmission column; 12. Transmission plate; 13. Centered clamping plate; 14. Second telescopic drive component; 15. Support frame; 16. Third telescopic drive component; 17. First transmission frame; 18. Fourth telescopic drive component; 19. Second transmission frame; 190. First arc-shaped clamping plate; 21. Electromagnet; 22. Iron plate; 23. Second arc-shaped clamping plate; 24. Permanent magnet block; 31. Support disc; 32. Cutting blade; 41. Transmission gear ring; 42. First gear; 43. Transmission shaft; 44. Second gear; 45. Transmission rack; 46. Connecting plate; 47. Fifth telescopic drive component; 51. Sixth telescopic drive component; 52. Base plate. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1 to 7 As shown, the present invention provides a rootstock-scion alignment clamping device for grafting seedlings in plug trays, including a support plate 1. The top of the support plate 1 has multiple first through holes 2 and a positioning groove 3. A docking plate 4 is slidably connected in the positioning groove 3. A first telescopic drive 5 is fixedly connected to the top of the docking plate 4. The first telescopic drive 5 is an electric telescopic rod. An installation plate 6 is fixedly connected to the output end of the first telescopic drive 5. A multiple second through holes 7 are opened on the top of the installation plate 6. Multiple clamping boxes 8 are fixedly connected to the top of both the support plate 1 and the installation plate 6. A transmission ring 9 is rotatably connected in the clamping box 8. A multiple arc-shaped transmission groove 10 is opened on the top of the transmission ring 9. A transmission column 11 is slidably connected in the arc-shaped transmission groove 10. A transmission plate 12 is fixedly connected to the top of the transmission column 11 and slidably connected to the clamping box 8. A central clamping plate 13 is fixedly connected to one side of the transmission plate 12. A drive mechanism for driving the transmission ring 9 to rotate around its own axis is connected to the outer surface of the transmission ring 9.

[0031] The bottom of the mounting plate 6 is fixedly connected to a second telescopic drive component 14, which is an electric telescopic rod. The output end of the second telescopic drive component 14 is fixedly connected to a support frame 15 that is slidably connected to the mounting plate 6.

[0032] Multiple third telescopic drive components 16 are fixedly connected to the top of the support plate 1. Each third telescopic drive component 16 is an electric telescopic rod. The output end of the third telescopic drive component 16 is fixedly connected to a first transmission frame 17. Multiple fourth telescopic drive components 18 are fixedly connected to the top of the support plate 1. Each fourth telescopic drive component 18 is an electric telescopic rod. The output end of the fourth telescopic drive component 18 is fixedly connected to a second transmission frame 19. Multiple first arc-shaped clamping plates 190 are fixedly connected to both the first transmission frame 17 and the second transmission frame 19.

[0033] The drive mechanism includes a transmission gear ring 41 fixedly connected to the outer surface of the transmission ring 9. A first gear 42 is meshed with the outer surface of the transmission gear ring 41. A transmission shaft 43, which is rotatably connected to the clamping box 8, is fixedly sleeved in the middle of the first gear 42. A second gear 44 is fixedly sleeved on the outer surface of the transmission shaft 43. A transmission rack 45, which is slidably connected to the clamping box 8, is meshed with the outer surface of the second gear 44. A connecting plate 46 is fixedly connected to one side of the transmission rack 45. A fifth telescopic drive member 47, which is an electric telescopic rod, is fixedly connected to one side of the connecting plate 46.

[0034] First, the rootstock seedlings in the grafting tray are topped and a grafting point is cut at the top. Then, the grafting tray is placed under the support plate 1, with the rootstock branches passing through the corresponding first through holes 2. Simultaneously, the bottom of the scion seedlings to be grafted is sharpened and placed into the corresponding second through holes 7 on the mounting plate 6. At this point, the support frame 15 at the bottom of the mounting plate 6 forms a supporting and limiting position on the bottom of the scion seedlings. The fifth telescopic drive component 47 is activated, which drives multiple transmission racks 45 to move synchronously via the connecting plate 46. The transmission racks 45 drive the second gear 44 to rotate, which in turn drives the first gear 42 to rotate via the transmission shaft 43. The first gear 42 then meshes and drives the transmission gear ring 41 and the transmission ring 9 to rotate as a whole. When the transmission ring 9 rotates, the arc-shaped transmission groove 10 on it forces each transmission column 11 to slide radially, thereby driving each transmission plate 12 and the central clamping plate 13 to synchronously move towards the center of the clamping box 8, so as to centrally align and clamp the rootstock seedling and scion seedling respectively, ensuring that the axial height of the rootstock and scion in each grafting unit is aligned.

[0035] The aforementioned drive mechanism employs a gear and rack transmission system linked with an arc-shaped groove. This system boasts advantages such as compact structure, smooth transmission, and rapid response. Only one fifth telescopic drive component 47 is needed to drive the synchronous movement of the centering clamping plates 13 within multiple clamping boxes 8. This significantly reduces the number of power components and manufacturing costs, while ensuring the consistency and synchronicity of the clamping actions of each grafting unit. This effectively avoids offset or damage caused by asynchronous clamping of seedlings. Simultaneously, the arc-shaped transmission groove 10, in conjunction with the transmission column 11, efficiently converts the rotational motion of the transmission ring 9 into the linear radial motion of the transmission plate 12. The motion trajectory is precise and controllable, with high centering accuracy, ensuring the axial alignment accuracy of the rootstock and scion before grafting. This provides a reliable guarantee for subsequent precise grafting, significantly improving the grafting success rate and quality.

[0036] After alignment, the second telescopic drive 14 is activated, causing the support frame 15 to slide horizontally, offset from directly below the first through hole 2, thus releasing the bottom support of the scion seedling. Then, the first telescopic drive 5 is activated, pushing the mounting plate 6 downwards smoothly, so that each scion seedling is accurately inserted into the grafting interface at the top of the corresponding rootstock under the guidance of the centering clamping plate 13, completing the automatic grafting.

[0037] During this process, the support frame 15 provides stable support for the scion seedling before insertion, effectively preventing the seedling from falling or tilting due to gravity during clamping and alignment, ensuring the accuracy of clamping and alignment. During insertion, the second telescopic drive 14 quickly moves out of the support frame 15, avoiding interference from the support frame 15 with the insertion stroke and achieving automatic switching between support and release. The action logic is clear, the connection is smooth, and no manual intervention is required. As the first telescopic drive 5 drives the mounting plate 6 to move smoothly downward, the central clamping plate 13 maintains its clamping state on the seedling throughout the insertion process, providing continuous and stable guidance to the seedling. This effectively prevents the seedling from bending, deviating, or twisting during insertion, ensuring precise alignment of the graft union between the scion and rootstock, and uniform insertion depth, significantly improving the success rate of grafting and the survival rate of the grafted seedlings.

[0038] After the insertion is completed, the third telescopic drive component 16 and the fourth telescopic drive component 18 are activated to drive the first transmission frame 17 and the second transmission frame 19 to move towards each other, so that the first arc-shaped clamping plates 190 on both sides close from both sides and press against the grafting connection, thereby realizing the external clamping and fixing of the grafting part.

[0039] The third telescopic drive component 16 and the fourth telescopic drive component 18 independently drive the first transmission frame 17 and the second transmission frame 19 to move towards each other. This ensures that the clamping force of the first arc-shaped clamping plate 190 on the grafting site is uniform, controllable, and flexibly adjustable. The clamping force can be adaptively adjusted according to different varieties and seedling thicknesses, ensuring reliable fixation of the grafting site while avoiding damage to the seedling tissue due to excessive clamping force. Simultaneously, the arc-shaped inner surface of the first arc-shaped clamping plate 190 matches the outer contour of the grafting site, increasing the contact area and distributing the clamping force evenly. This further reduces local pressure on the seedling and effectively protects the healing tissue of the grafting site. This automatic clamping and fixing method eliminates the need for manual use of grafting clips or binding straps, completely freeing the operator's hands, greatly reducing labor intensity and labor costs. Furthermore, the consistent clamping position and reliable fixation promote rapid healing of the graft union, significantly improving the automation level and graft survival rate of the grafting operation. It is suitable for factory-scale, large-scale seedling production.

[0040] Example 2

[0041] Based on Example 1, please refer to Figures 3 to 7 As shown, a plurality of electromagnets 21 are fixedly connected to the first arc-shaped clamping plate 190. Iron plates 22 are adsorbed on the inner surface of each electromagnet 21. A second arc-shaped clamping plate 23 is fixedly connected to one side of the iron plate 22. Two permanent magnet blocks 24 are fixedly connected to one side of the second arc-shaped clamping plate 23.

[0042] Multiple support discs 31 are fixedly connected to the support frame 15, and a cutting blade 32 is fixedly connected to the bottom of the support disc 31.

[0043] Multiple sixth telescopic drive components 51 are fixedly connected to the support plate 1. The sixth telescopic drive component 51 is an electric telescopic rod. The output end of the sixth telescopic drive component 51 is fixedly connected to the bottom of the support plate 1. The bottom end of the sixth telescopic drive component 51 is fixedly connected to the base plate 52.

[0044] A rubber buffer pad is fixedly connected to the inner surface of the central clamping plate 13.

[0045] Rubber buffer pads are fixedly connected to the inner surfaces of both the first arc-shaped clamping plate 190 and the second arc-shaped clamping plate 23.

[0046] The inner walls of both the first through hole 2 and the second through hole 7 are fixedly connected with flexible protective sleeves, which are made of silicone material.

[0047] First, the electromagnet 21 is energized to generate a magnetic attraction force, which tightly attracts the iron plate 22 on the second arc-shaped clamping plate 23 to the surface of the electromagnet 21, thereby achieving rapid clamping and positioning of the second arc-shaped clamping plate 23.

[0048] After removing the top of the rootstock seedling in the seedling tray, place it under the support plate 1. Based on the actual height of the rootstock seedling, activate the sixth telescopic drive component 51 to drive the support plate 1 to rise and fall, so that the centering clamping plate 13 is precisely moved to the desired clamping height position of the rootstock seedling. Then, the centering clamping plate 13 simultaneously clamps and fixes the rootstock seedling and scion seedling in a centered position.

[0049] Next, the first telescopic drive component 5 is activated, driving the mounting plate 6 to move downwards, which in turn causes the support frame 15, its support disc 31, and the cutting blade 32 to move downwards synchronously. The cutting blade 32 first contacts the top of the rootstock seedling and completes the automatic cutting and shaping of the grafting interface, without the need for manual pre-opening.

[0050] After the cutting is completed, the second telescopic drive component 14 is activated, causing the support frame 15 and the support disc 31 to move horizontally out, so that the support disc 31 no longer forms a bottom support for the scion seedling. Then the first telescopic drive component 5 drives the mounting plate 6 to move down again, so that the scion seedling is inserted into the cut grafting interface.

[0051] Then, the third telescopic drive component 16 and the fourth telescopic drive component 18 are activated, causing the first transmission frame 17 and the second transmission frame 19 to move towards each other, driving their respective first arc-shaped clamping plates 190 and the second arc-shaped clamping plates 23 adsorbed on them to close at the grafting point. When the second arc-shaped clamping plates 23 on both sides come into contact, the permanent magnet blocks 24 on them attract and lock each other, thereby forming a stable automatic clamping at the grafting position, completely replacing manual hand clamping operation.

[0052] After the grafting clamping is completed, the central clamping plate 13 is controlled to release the seedling, and the mounting plate 6 is pushed back to its original position. Then the support plate 1 is moved out as a whole, and the grafting operation of the next tray of seedlings can be carried out. This realizes the continuous reuse of the device and greatly improves the operation efficiency of large-scale grafting production.

[0053] Working principle:

[0054] When this device is in operation, the rootstock seedlings with their tops removed and open at the top are first placed in the grafting tray under the support plate 1, so that each rootstock branch passes through the first through hole 2. At the same time, the scion seedlings with their bottoms sharpened are placed into the second through hole 7 of the mounting plate 6, with the support frame 15 providing bottom support. The fifth telescopic drive component 47 is activated, which drives multiple transmission racks 45 to slide synchronously through the connecting plate 46. The transmission racks 45 drive the second gear 44 to rotate, and through the transmission shaft 43 and the first gear 42, drive the transmission gear ring 41 and the transmission ring 9 to rotate as a whole. The arc-shaped transmission groove 10 on the transmission ring 9 forces each transmission column 11 to slide radially inward, and then through the transmission plate 12, drives each centering clamping plate 13 to synchronously retract towards the center of the clamping box 8, realizing the synchronous centering and alignment clamping of the rootstock seedlings and scion seedlings, ensuring that the axis of each grafting unit is accurately aligned. After alignment, the second telescopic drive 14 is activated to move the support frame 15 horizontally out, releasing the bottom support of the scion seedling. Then, the first telescopic drive 5 is activated to push the mounting plate 6 downward smoothly, allowing each scion seedling to be precisely inserted into the grafting interface at the top of the corresponding rootstock under the continuous guidance of the central clamping plate 13, completing the automatic grafting. After grafting, the third telescopic drive 16 and the fourth telescopic drive 18 are activated to drive the first transmission frame 17 and the second transmission frame 19 to close towards each other, so that the first arc-shaped clamping plate 190 is pressed and fixed at the grafting joint from both sides, realizing automatic external clamping of the grafting part. No manual intervention is required throughout the process, efficiently completing the single-plate grafting operation.

[0055] This device further optimizes the grafting process. First, the electromagnet 21 is energized, causing the second arc-shaped clamping plate 23 to be attracted and fixed to the first arc-shaped clamping plate 190 via the iron plate 22, achieving rapid clamping and positioning of the clamping components. After placing the top-removed rootstock seedling tray under the support plate 1, the sixth telescopic drive 51 is activated according to the actual height of the rootstock seedling to drive the support plate 1 to rise and fall, so that the centering clamping plate 13 is precisely moved to the optimal clamping height and the rootstock seedling and scion seedling are centered and fixed. Then, the first telescopic drive 5 is activated to drive the mounting plate 6 to move down, and the support disc 31 on the support frame 15 drives the cutting blade 32 to move down synchronously, automatically cutting the top of the rootstock seedling to form a neat grafting interface; after the cutting is completed, the second telescopic drive 14 is activated to move the support frame 15 and the support disc 31 horizontally out, releasing the support for the seedling, and the first telescopic drive 5 is activated again to drive the mounting plate 6 to move down, so that the scion seedling is accurately inserted into the cut grafting interface. Subsequently, the third telescopic drive component 16 and the fourth telescopic drive component 18 are activated, causing the first transmission frame 17 and the second transmission frame 19 to move closer together. This causes the second arc-shaped clamping plates 23 on both sides to close and lock together through mutual attraction and locking by the permanent magnet blocks 24, forming a stable clamping with double attraction at the grafting position. After clamping is completed, the central clamping plate 13 releases the seedling, the mounting plate 6 retracts and resets, and the support plate 1 is moved out as a whole, allowing for the next batch of work to be carried out, thus realizing the continuous cyclical use of the device.

[0056] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rootstock-scion alignment clamping device for grafting seedlings in plug trays, characterized in that, The system includes a support plate (1), the top of which has multiple first through holes (2), a positioning groove (3) on the top of which is slidably connected to a docking plate (4), a first telescopic drive member (5) fixedly connected to the top of the docking plate (4), a mounting plate (6) fixedly connected to the output end of the first telescopic drive member (5), a multiple second through holes (7) on the top of the mounting plate (6), and multiple clamps fixedly connected to the tops of both the support plate (1) and the mounting plate (6). The clamping box (8) has a transmission ring (9) rotatably connected inside it. The top of the transmission ring (9) is provided with multiple arc-shaped transmission grooves (10). A transmission column (11) is slidably connected inside the arc-shaped transmission grooves (10). The top of the transmission column (11) is fixedly connected to a transmission plate (12) slidably connected to the clamping box (8). A central clamping plate (13) is fixedly connected to one side of the transmission plate (12). A drive mechanism for driving the transmission ring (9) to rotate around its own axis is connected to the outer surface of the transmission ring (9). The bottom of the mounting plate (6) is fixedly connected to a second telescopic drive member (14), and the output end of the second telescopic drive member (14) is fixedly connected to a support frame (15) that is slidably connected to the mounting plate (6). The top of the support plate (1) is fixedly connected to a plurality of third telescopic drive components (16), the output end of the third telescopic drive component (16) is fixedly connected to a first transmission frame (17), the top of the support plate (1) is fixedly connected to a plurality of fourth telescopic drive components (18), the output end of the fourth telescopic drive component (18) is fixedly connected to a second transmission frame (19), and a plurality of first arc-shaped clamping plates (190) are fixedly connected to both the first transmission frame (17) and the second transmission frame (19).

2. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 1, characterized in that, Multiple electromagnets (21) are fixedly connected to the first arc-shaped clamping plate (190). Iron plates (22) are adsorbed on the inner surface of each electromagnet (21). A second arc-shaped clamping plate (23) is fixedly connected to one side of the iron plate (22). Two permanent magnet blocks (24) are fixedly connected to one side of the second arc-shaped clamping plate (23).

3. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 1, characterized in that, Multiple support discs (31) are fixedly connected to the support frame (15), and a cutting blade (32) is fixedly connected to the bottom of the support disc (31).

4. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 1, characterized in that, The driving mechanism includes a transmission gear ring (41) fixedly connected to the outer surface of the transmission ring (9). A first gear (42) is meshed with the outer surface of the transmission gear ring (41). A transmission shaft (43) rotatably connected to the clamping box (8) is fixedly sleeved in the middle of the first gear (42). A second gear (44) is fixedly sleeved on the outer surface of the transmission shaft (43). A transmission rack (45) slidably connected to the clamping box (8) is meshed with the outer surface of the second gear (44). A connecting plate (46) is fixedly connected to one side of the transmission rack (45). A fifth telescopic driving member (47) is fixedly connected to one side of the connecting plate (46).

5. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 1, characterized in that, Multiple sixth telescopic drive components (51) are fixedly connected to the support plate (1). The output end of the sixth telescopic drive component (51) is fixedly connected to the bottom of the support plate (1), and the bottom end of the sixth telescopic drive component (51) is fixedly connected to the bottom plate (52).

6. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 1, characterized in that, A rubber buffer pad is fixedly connected to the inner surface of the central clamping plate (13).

7. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 2, characterized in that, Rubber buffer pads are fixedly connected to the inner surfaces of the first arc-shaped clamping plate (190) and the second arc-shaped clamping plate (23).

8. The rootstock-scion alignment clamping device for grafting seedlings in plug trays according to claim 1, characterized in that, The inner walls of the first through hole (2) and the second through hole (7) are both fixedly connected with flexible protective sleeves, which are made of silicone material.

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