Automatic seedling taking device for transplanting machine

Abstract

The present invention belongs to the technical field of transplanting machines, and specifically relates to an automatic seedling-picking device for transplanting machines. The present invention provides an automatic seedling-picking device for transplanting machines, which aims to solve the problem in the prior art that transplanting machines cannot automatically pick seedlings from seedling trays. An automatic seedling-picking device for transplanting machines, comprising a seedling tray installed on the transplanting machine, wherein the transplanting machine is also equipped with a seedling picker for picking up single seedlings from the seedling tray; the seedling picker comprises a seedling picking head, and a seedling picking cavity is provided on the seedling picking head. The seedling picker also comprises a negative pressure generator. When the negative pressure generator is working, negative pressure is generated in the seedling picking cavity, so that the seedlings in the seedling discharge port are sucked into the seedling picking cavity. After the seedlings enter the seedling picking cavity, they fill the space in the seedling picking cavity, so that a second seedling cannot enter the seedling picking cavity, so that the seedling picking cavity can realize single-seedling picking, thereby improving the seedling picking accuracy and eliminating the need for manual operation, thereby realizing automatic seedling picking and improving transplanting efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of transplanting machines, and particularly relates to an automatic seedling taking device for a transplanting machine. Background Art

[0002] With the development of society and the improvement and progress of agricultural technology, many crops and vegetables use the technology of seedling raising and transplanting to alleviate the tension of crop rotation, while also concentrating seedling raising, saving land and seeds. Seedling raising and transplanting can also avoid some risks in the seedling stage caused by climate, land, pests and diseases or the seeds themselves, and overcome problems such as uneven, incomplete and weak seedlings from direct-seeded seeds. Years of practice have proved that seedling raising and transplanting technology can also promote crops and vegetables to increase target yields or improve quality effects. Transplanting is the first step for seedlings of crops and vegetables to go to the field, and it is one of the key technologies for field management. Traditional manual transplanting is laborious and time-consuming. A transplanter has appeared in the prior art, which uses an automated transplanting method to complete the transplanting of seedlings.

[0003] However, the transplanting machines in the prior art all adopt a manual seedling-taking method for transplanting, and the staff need to manually place the seedlings in the seedling tray into the transplanter of the transplanter. This seedling-taking method increases the labor intensity of the staff and reduces the efficiency of seedling-taking.

[0004] In summary, the transplanting machine in the prior art cannot automatically take the seedlings from the seedling tray. Summary of the Invention

[0005] The invention provides an automatic seedling taking device for a transplanter, aiming to solve the problem in the prior art that a transplanter cannot automatically take seedlings from a seedling tray.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An automatic seedling picking device for a transplanter, comprising a seedling tray mounted on the transplanter, and a seedling picker mounted on the transplanter for picking individual seedlings from the seedling tray;

[0008] The seedling tray is provided with a seedling discharge port, and the seedling tray is also provided with a seedling guide for guiding the seedlings in the seedling tray to the seedling discharge port, and the height of the seedling guide is not higher than the seedling stem to be taken;

[0009] The depth of the seedling tray does not exceed the seedling stem, and a seedling barrier is provided at the upper end of the seedling tray;

[0010] The seedling extractor includes a seedling extracting head, a seedling extracting cavity is provided on the seedling extracting head, and the seedling extracting cavity is open toward one end of the seedling discharge port. The seedling extractor also includes a negative pressure generator, the negative pressure generator is communicated with the seedling extracting cavity, the width of the seedling extracting cavity is adapted to the diameter of the single seedling stem, and the negative pressure generator is provided with a controller for controlling the operation or stop of the negative pressure generator;

[0011] The seedling extractor further includes a carriage, which is slidably connected to the transplanter, and the power source of the transplanter drives the carriage to reciprocate in a direction close to or away from the seedling discharge port through a transmission mechanism;

[0012] A seedling pushing rack is further provided in the seedling tray, and a driving mechanism for driving the seedling pushing rack to move toward the seedling discharge port is provided on the slide;

[0013] The driving mechanism includes a groove arranged on the seedling pushing frame, a rotating shaft is arranged on the slide, and a shifting tooth is arranged on the rotating shaft to drive the seedling pushing frame to move toward the seedling discharge port. The shifting tooth is rotatably connected to the rotating shaft through a one-way bearing. When the slide moves in the direction away from the seedling discharge port, the shifting tooth cooperates with the groove. When the slide moves in the direction close to the seedling discharge port, the shifting tooth is staggered with the groove.

[0014] In a preferred solution, there are two seedling barriers, which are respectively welded to the seedling tray, and both are arranged along the depth direction of the seedling discharge port, and the seedling barriers are provided with through holes to reduce the weight of the seedling barriers.

[0015] Based on the above technical solution: there are two seedling barriers, which can prevent the seedlings in the seedling tray from falling, thereby making it difficult for the seedlings in the seedling tray to fall, saving the amount of seedlings. The seedling barriers are provided with through holes, which reduce the weight of the seedling barriers and thus reduce the overall weight of the seedling tray.

[0016] In a preferred embodiment, the seedling guide includes a first curved plate and a second curved plate, and the seedling discharge port is formed between the first curved plate and the second curved plate.

[0017] Based on the above technical solution: the seedling guide includes a first curved plate and a second curved plate. The seedling guide is formed by the first curved plate and the second curved plate, and the seedling guide is not easy to scratch the seedlings.

[0018] In a preferred embodiment, the seedling discharge port gradually widens from an end close to the seedling remover to an end away from the seedling remover, and the seedling guide is welded to the bottom wall of the seedling tray.

[0019] Based on the above technical solution: the seedling discharge opening gradually widens from the end close to the seedling remover to the end far away from the seedling remover, the seedlings in the seedling tray can easily enter the seedling discharge opening, and the seedling removal accuracy of the seedling remover is improved.

[0020] In a preferred embodiment, a gap is provided between the seedling guide and the side wall of the seedling tray for allowing the seedling pushing rack to pass through, and the seedling pushing rack includes a driving plate, the groove is provided on the driving plate, the driving plate is provided along the depth direction of the seedling discharge port, the driving plate cooperates with the gap, and a seedling pushing plate is provided on the driving plate, and the seedling pushing plate is provided at an end of the driving plate away from the slide.

[0021] Based on the above technical solution: the seedling pushing rack includes a driving plate, and a seedling pushing plate is provided on the driving plate. The seedling pushing plate can be used to conveniently push the seedlings in the seedling tray to the seedling discharge port, so that the seedlings are not easily retained in the seedling tray.

[0022] In a preferred solution, the seedling pushing plate and the driving plate are an integrated structure, there are two driving plates, and the two driving plates are respectively arranged at both ends of the seedling pushing plate, and there are two driving mechanisms, and the two driving mechanisms respectively drive different driving plates.

[0023] Based on the above technical solution: the seedling pushing plate and the driving plate are an integrated structure, the seedling pushing frame is strong and is not easily deformed during long-term use, thereby extending the service life of the seedling pushing frame. By setting up two driving mechanisms, the seedling pushing frame is evenly stressed and is not easily deformed.

[0024] Preferably, the slide is installed on the transplanter through a mounting frame, a slide rod is provided on the slide, a slide hole cooperating with the slide rod is provided on the mounting frame, and a spring is provided between the mounting frame and the slide to pull the slide to move away from the seedling tray.

[0025] Based on the above technical solution: the slide is installed on the transplanter through the mounting frame, a slide rod is provided on the slide, and a slide hole is provided on the mounting frame. The slide rod and the slide hole are used to guide the slide, so that the slide has higher movement accuracy, so that the seedlings taken out from the seedling head can correctly enter the transplanter of the transplanter.

[0026] In a preferred solution, the spring is sleeved on the slide rod, one end of the spring is fixed to the slide, and the other end of the spring is fixed to the mounting bracket.

[0027] Based on the above technical solution: the spring is sleeved on the slide rod, and the slide rod is used to guide the spring. The spring is not prone to plastic deformation during long-term use, thereby extending the service life of the spring.

[0028] In a preferred embodiment, the transmission mechanism includes a main shaft, a driven gear is provided at the lower end of the main shaft, the power source is provided with a driving gear meshing with the driven gear, and a cam is provided at the upper end of the main shaft, and the cam overcomes the elastic force of the spring to push the slide toward the direction close to the seedling discharge port.

[0029] Based on the above technical solution: the transmission mechanism includes a main shaft, a driven gear is provided at the lower end of the main shaft, and a cam is provided at the upper end of the main shaft. The cam is used to drive the slide to move. The slide has high movement accuracy and is not easy to slip or move out of place, so that the seedlings can enter the transplanter correctly.

[0030] In a preferred embodiment, the main shaft is rotatably connected to the mounting frame, a rolling bearing is provided between the main shaft and the mounting frame, the driven gear is mounted on the main shaft through a key connection, the cam and the main shaft are an integrated structure, the controller is mounted on the slide, the controller includes a micro switch for controlling the operation or stop of the negative pressure generator, the micro switch is triggered by the mounting frame, after the slide moves in a direction away from the seedling discharge port and into position, the mounting frame triggers the switch to stop the negative pressure generator, and when the slide moves in a direction close to the seedling discharge port, the mounting frame disengages from the micro switch, and the negative pressure generator starts to work.

[0031] Based on the above technical solution: the controller includes a micro switch, which is triggered by the mounting bracket. When the slide moves to a position away from the seedling discharge port, the seedlings taken out by the seedling remover are located directly above the transplanter. The negative pressure generator is stopped by the controller, and the seedlings enter the transplanter under the action of their own gravity, thereby improving the working accuracy of the negative pressure generator and allowing the seedlings to enter the transplanter correctly.

[0032] The beneficial effects of the present invention are:

[0033] 1. The seedling picker includes a seedling picking head, which is provided with a seedling picking cavity. The seedling picker also includes a negative pressure generator. When the negative pressure generator is working, negative pressure is generated in the seedling picking cavity, so that the seedlings in the seedling discharge port are sucked into the seedling picking cavity. After the seedlings enter the seedling picking cavity, they fill the space in the seedling picking cavity, so that a second seedling cannot enter the seedling picking cavity, so that the seedling picking cavity can realize single seedling picking, improve the seedling picking accuracy, and do not require manual operation, thereby realizing automatic seedling picking and improving transplanting efficiency.

[0034] 2. The width of the seedling cavity is adapted to the diameter of a single seedling. The seedling cavity can only accommodate one seedling, which can effectively prevent multiple seedlings from being in the cavity and further improve the seedling picking accuracy.

[0035] 3. The seedling remover also includes a negative pressure generator, which uses negative pressure adsorption to remove seedlings. Compared with the clamping method, it is not easy to damage the seedlings, thereby improving the quality of the seedlings.

[0036] 4. A seedling pushing rack is also provided in the seedling tray. The seedling pushing rack is used to push the seedlings in the seedling tray to the seedling discharge port so that there are seedlings in the seedling discharge port. The seedlings in the seedling tray do not require manual operation, which reduces the labor intensity of the operator.

[0037] 5. The slide is provided with a driving mechanism that drives the seedling pushing frame to move toward the seedling discharge port. The slide uses the driving mechanism to drive the seedling pushing frame to move. Each time the seedling taker takes a seedling, the driving mechanism drives the seedling pushing frame to move a certain distance to prevent the seedling pushing frame from moving too far and damaging the seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 The present invention is a schematic diagram of the installation position of an automatic seedling taking device of a transplanter on the transplanter.

[0040] Figure 2 The present invention is a schematic diagram of an automatic seedling taking device for a transplanter.

[0041] Figure 3 The present invention is a schematic diagram of a seedling remover in an automatic seedling remover for a transplanter.

[0042] Figure 4 yes Figure 3 A in the enlarged view.

[0043] Figure 5 The present invention is a schematic diagram of a seedling pushing rack in an automatic seedling taking device of a transplanter.

[0044] Description of the numbers in the figure:

[0045] 1-seedling tray; 2-seedling remover; 3-seedling outlet; 4-seedling guide; 5-seedling barrier; 6-seedling head; 7-seedling chamber; 8-negative pressure generator; 9-slide; 10-seedling pusher; 11-groove; 12-rotating shaft; 13-shifting gear; 14-first arc plate; 15-second arc plate; 16-driving plate; 17-seedling pusher; 18-mounting frame; 19-slide rod; 20-spring; 21-driven gear; 22-cam; 23-main shaft. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] refer to Figures 1 to 5 This embodiment provides an automatic seedling removal device for a transplanter, comprising a seedling tray 1 mounted on the transplanter, and a seedling remover 2 for removing individual seedlings from the seedling tray 1;

[0048] The seedling tray 1 is provided with a seedling discharge port 3, and the seedling tray 1 is further provided with a seedling guide 4 for guiding the seedlings in the seedling tray 1 to the seedling discharge port 3. The height of the seedling guide 4 is not higher than the stem of the seedling to be taken, and is used to align the seedling taker 2 with the stem of the seedling to absorb the stem of the seedling;

[0049] The depth of the seedling tray 1 does not exceed the seedling stem, and a seedling barrier 5 is provided at the upper end of the seedling tray 1;

[0050] The seedling extractor 2 includes a seedling extracting head 6, a seedling extracting cavity 7 is provided on the seedling extracting head 6, and the seedling extracting cavity 7 is open toward one end of the seedling discharge port. The seedling extractor 2 also includes a negative pressure generator 8, which is communicated with the seedling extracting cavity 7. The width of the seedling extracting cavity 7 is adapted to the diameter of the single seedling stem. The negative pressure generator 8 is provided with a controller for controlling the negative pressure generator 8 to work or stop.

[0051] The seedling extractor 2 further includes a carriage 9, which is slidably connected to the transplanter. The power source of the transplanter drives the carriage 9 to reciprocate in a direction close to or away from the seedling discharge port 3 through a transmission mechanism.

[0052] The seedling tray 1 is further provided with a seedling pushing frame 10, and the slide 9 is provided with a driving mechanism for driving the seedling pushing frame 10 to move toward the seedling discharge port 3;

[0053] The driving mechanism includes a groove 11 provided on the seedling pushing frame 10, a rotating shaft 12 provided on the slide 9, and a shifting tooth 13 provided on the rotating shaft 12 for driving the seedling pushing frame 10 to move toward the seedling discharge port 3. The shifting tooth 13 is rotatably connected to the rotating shaft 12 through a one-way bearing. When the slide 9 moves in the direction away from the seedling discharge port 3, the shifting tooth 13 cooperates with the groove 11. When the slide 9 moves in the direction close to the seedling discharge port 3, the shifting tooth 13 is staggered with the groove 11.

[0054] refer to Figures 2 to 5Specifically, there are two seedling barriers 5, which are respectively welded to the seedling tray 1. In addition, the two seedling barriers 5 are arranged along the depth direction of the seedling discharge port 3. The seedling barriers 5 are provided with through holes to reduce the weight of the seedling barriers 5. The through holes can be long strips, and a transition fillet is provided between the through holes and the side walls of the seedling barriers 5 to prevent the edges of the through holes and the side walls of the seedling barriers 5 from damaging the seedlings.

[0055] The seedling barrier 5 may also be an integrated structure with the seedling tray 1; or, the seedling barrier 5 may also be installed on the seedling tray 1 in a detachable connection manner.

[0056] Specifically, the seedling guide 4 includes a first curved plate 14 and a second curved plate 15 , and the seedling discharge port 3 is formed between the first curved plate 14 and the second curved plate 15 .

[0057] The seedling discharge port 3 gradually widens from an end close to the seedling remover 2 to an end away from the seedling remover 2 , and the seedling guide 4 is welded to the bottom wall of the seedling tray 1 .

[0058] The seedling guide 4 can also be fixed on the bottom wall of the seedling tray 1 by other means. There can be multiple seedling discharge ports 3. When the transplanter has multiple transplanters, each seedling discharge port 3 supplies rice seedlings to an independent transplanter.

[0059] Specifically, a gap is provided between the seedling guide 4 and the side wall of the seedling tray 1 for allowing the seedling pushing rack 10 to pass through. The seedling pushing rack 10 includes a driving plate 16. The groove 11 is provided on the driving plate 16. The driving plate 16 is provided along the depth direction of the seedling discharge port 3. The driving plate 16 cooperates with the gap. A seedling pushing plate 17 is provided on the driving plate 16. The seedling pushing plate 17 is provided at one end of the driving plate 16 away from the slide 9.

[0060] Among them, the seedling pushing plate 17 and the driving plate 16 are an integrated structure. There are two driving plates 16, and the two driving plates 16 are respectively arranged at both ends of the seedling pushing plate 17. There are two driving mechanisms, and the two driving mechanisms respectively drive different driving plates 16.

[0061] The seedling pushing plate 17 also can be welded on the driving plate 16. The groove 11 cross-sectional shapes arranged on the driving plate 16 can be semicircular, also can be polygonal.

[0062] The one-way bearing allows the shifting tooth 13 to rotate only in one direction. Specifically, when the slide 9 moves away from the seedling discharge port 3, the shifting tooth 13 cooperates with one of the grooves 11. Under the action of the one-way bearing, the shifting tooth 13 will not rotate. At this time, the slide 9 can drive the driving plate 16 to move through the shifting tooth 13.

[0063] When the carriage 9 moves toward the seedling discharge port 3, under the action of the one-way bearing, the shifting tooth 13 rotates to prevent the shifting tooth 13 from pushing the seedling pushing frame 10 back.

[0064] Specifically, the slide 9 is installed on the transplanter through the mounting frame 18. The slide 9 is provided with a slide rod 19. The mounting frame 18 is provided with a slide hole that cooperates with the slide rod 19. A spring 20 is provided between the mounting frame 18 and the slide 9 to pull the slide 9 to move away from the seedling tray 1.

[0065] The spring 20 is sleeved on the slide rod 19 , one end of the spring 20 is fixed to the slide 9 , and the other end of the spring 20 is fixed to the mounting bracket 18 .

[0066] Specifically, the transmission mechanism includes a main shaft 23, a driven gear 21 is provided at the lower end of the main shaft 23, the power source is provided with a driving gear meshing with the driven gear 21, and a cam 22 is provided at the upper end of the main shaft 23. The cam 22 overcomes the elastic force of the spring 20 and pushes the slide 9 to move toward the direction close to the seedling discharge port 3.

[0067] Among them, the main shaft 23 is rotatably connected to the mounting frame 18, and a rolling bearing is provided between the main shaft 23 and the mounting frame 18. The driven gear 21 is mounted on the main shaft 23 through a key connection. The cam 22 and the main shaft 23 are an integrated structure. The controller is installed on the slide 9. The controller includes a microswitch for controlling the operation or stop of the negative pressure generator 8. The microswitch is triggered by the mounting frame 18. After the slide 9 moves in the direction away from the seedling discharge port 3, the mounting frame 18 triggers the switch to stop the negative pressure generator 8. When the slide 9 moves in the direction close to the seedling discharge port 3, the mounting frame 18 disengages from the microswitch, and the negative pressure generator 8 starts to work.

[0068] A linkage effect should be formed between the seedling head 6 and the transplanter. For example, the power source of the transplanter drives the transplanter to work, and then the transplanter drives the slide 9 to move through the transmission mechanism, so that a linkage effect is formed between the transplanter and the slide 9, so that the seedlings taken out by the seedling head 6 can fall correctly into the transplanter.

[0069] The working principle of this embodiment is:

[0070] First, the rice seedlings are placed in the seedling tray 1, and then the transplanter moves in the field. During the movement, the transplanter works and the transplanter can drive the slide 9 to move through the transmission mechanism.

[0071] Before the carriage 9 moves, the carriage 9 is located near the seedling discharge port 3, the negative pressure generator 8 starts to work, negative pressure is generated in the seedling removal cavity 7, and the seedlings in the seedling discharge port 3 are adsorbed in the seedling removal cavity 7.

[0072] Then, the slide 9 moves away from the seedling discharge port 3. When the micro switch is triggered, the controller controls the negative pressure generator 8 to stop working. The seedlings in the seedling cavity 7 are now located directly above the transplanter. Under the action of their own gravity, the seedlings in the seedling cavity 7 automatically fall into the transplanter, completing the automatic seedling removal.

[0073] The carriage 9 moves toward the seedling discharge port 3, the micro switch is in an untriggered state, and the controller controls the negative pressure generator 8 to work, preparing for the next seedling removal.

[0074] The present invention is not limited to the above-mentioned optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be arbitrarily combined. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. An automatic seedling removal device for a transplanter, characterized by: The invention comprises a seedling tray mounted on a transplanter, wherein the transplanter is also equipped with a seedling extractor for extracting individual seedlings from the seedling tray; The seedling tray is provided with a seedling discharge port, and the seedling tray is also provided with a seedling guide for guiding the seedlings in the seedling tray to the seedling discharge port, and the height of the seedling guide is not higher than the seedling stem to be taken; The depth of the seedling tray does not exceed the seedling stem, and a seedling barrier is provided at the upper end of the seedling tray; The seedling extractor includes a seedling extracting head, a seedling extracting cavity is provided on the seedling extracting head, and the seedling extracting cavity is open toward one end of the seedling discharge port. The seedling extractor also includes a negative pressure generator, the negative pressure generator is communicated with the seedling extracting cavity, the width of the seedling extracting cavity is adapted to the diameter of the single seedling stem, and the negative pressure generator is provided with a controller for controlling the operation or stop of the negative pressure generator; The seedling extractor further includes a carriage, which is slidably connected to the transplanter, and the power source of the transplanter drives the carriage to reciprocate in a direction close to or away from the seedling discharge port through a transmission mechanism; A seedling pushing rack is further provided in the seedling tray, and a driving mechanism for driving the seedling pushing rack to move toward the seedling discharge port is provided on the slide; The driving mechanism includes a groove arranged on the seedling pushing frame, a rotating shaft is arranged on the slide, and a shifting tooth is arranged on the rotating shaft to drive the seedling pushing frame to move toward the seedling discharge port. The shifting tooth is rotatably connected to the rotating shaft through a one-way bearing. When the slide moves in the direction away from the seedling discharge port, the shifting tooth cooperates with the groove. When the slide moves in the direction close to the seedling discharge port, the shifting tooth is staggered with the groove.

2. The automatic seedling removal device for a transplanter according to claim 1, characterized in that: There are two seedling retaining fences, which are respectively welded to the seedling tray. In addition, the two seedling retaining fences are arranged along the depth direction of the seedling discharge port. The seedling retaining fences are provided with through holes for reducing the weight of the seedling retaining fences.

3. The automatic seedling removal device for a transplanter according to claim 1, characterized in that: The seedling guide includes a first curved plate and a second curved plate, and the seedling discharge port is formed between the first curved plate and the second curved plate.

4. The automatic seedling removal device for a transplanter according to claim 3, characterized in that: The seedling discharge port gradually widens from one end close to the seedling remover to one end away from the seedling remover, and the seedling guide is welded to the bottom wall of the seedling tray.

5. The automatic seedling removal device for a transplanter according to claim 4, characterized in that: A gap is provided between the seedling guide and the side wall of the seedling tray for the seedling pushing rack to pass through. The seedling pushing rack includes a driving plate. The groove is provided on the driving plate. The driving plate is provided along the depth direction of the seedling discharge port. The driving plate cooperates with the gap. A seedling pushing plate is provided on the driving plate. The seedling pushing plate is provided at an end of the driving plate away from the slide.

6. The automatic seedling removal device for a transplanter according to claim 5, characterized in that: The seedling pushing plate and the driving plate are an integrated structure. There are two driving plates, which are respectively arranged at both ends of the seedling pushing plate. There are two driving mechanisms, which respectively drive different driving plates.

7. The automatic seedling removal device for a transplanter according to claim 1, characterized in that: The slide is installed on the transplanter through a mounting frame. A slide rod is provided on the slide. A slide hole that cooperates with the slide rod is provided on the mounting frame. A spring that pulls the slide to move away from the seedling tray is provided between the mounting frame and the slide.

8. The automatic seedling removal device for a transplanter according to claim 7, characterized in that: The spring is sleeved on the slide rod, one end of the spring is fixed on the slide bracket, and the other end of the spring is fixed on the mounting bracket.

9. The automatic seedling removal device for a transplanter according to claim 8, characterized in that: The transmission mechanism includes a main shaft, a driven gear is provided at the lower end of the main shaft, the power source is provided with a driving gear meshing with the driven gear, and a cam is provided at the upper end of the main shaft. The cam overcomes the elastic force of the spring and pushes the slide to move toward the seedling discharge port.

10. The automatic seedling removal device for a transplanter according to claim 9, characterized in that: The main shaft is rotatably connected to the mounting frame, a rolling bearing is provided between the main shaft and the mounting frame, the driven gear is mounted on the main shaft through a key connection, the cam and the main shaft are an integrated structure, the controller is mounted on the slide, the controller includes a micro switch for controlling the operation or stop of the negative pressure generator, the micro switch is triggered by the mounting frame, after the slide moves in a direction away from the seedling discharge port and reaches a position, the mounting frame triggers the switch to stop the negative pressure generator, and when the slide moves in a direction close to the seedling discharge port, the mounting frame disengages from the micro switch, and the negative pressure generator starts to work.

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