A paper chain seedling pot low-damage seedling removal and chain breaking device

Abstract

This invention relates to a low-damage seedling extraction and chain-breaking device for paper-based chain seedling pots. Addressing the problems of complex mechanical structures in existing automated transplanting technologies, such as high seedling damage rates with stem-clamping methods and high substrate and root damage rates with needle-insertion methods leading to long recovery periods after transplanting, this invention automates the entire transplanting process—including seedling extraction, supply, transport, chain-breaking, and placement—through a synchronous belt-driven seedling extraction device, chain-breaking device, seedling-bearing device, transmission device, and limiting support device. This invention utilizes a mechanized, low-damage seedling extraction and chain-breaking device to automate seedling extraction and chain-breaking operations for various crop sizes and varieties. It effectively solves the problems of high labor input, low efficiency, and high overall labor costs associated with manual and semi-automatic transplanting in my country, laying the foundation for the development of crop transplanting towards low-damage, high-speed, simplified, automated, and labor-saving unmanned methods.

Description

Technical Field

[0001] This invention relates to the field of agricultural and forestry machinery technology, specifically to a low-damage seedling removal and chain-breaking device for paper chain seedling pots. Technical Background

[0002] Potted seedlings have advantages such as high transplant survival rate and strong seedlings with high yield. With the continuous development of demand and technology, the current potted seedling transplanting technology is gradually developing towards labor-saving and unmanned operation. The pot containers are developing from single to grouped and chained, and the transplanting process is also gradually developing from manual and semi-mechanized to mechanized and automated, and from traditional assisted seedling feeding to fully mechanized feeding, delivery and transplanting. To simplify and improve the efficiency of potted seedling transplanting, patent JP2019071863A proposes a non-chain transplanting machine based on a hexagonal cross-section paper potted seedling book. The seedling transplanting device is a seedling transplanting device that quickly unfolds and separates in a chain during transplanting, but it is only suitable for transplanting densely planted crops with small and fixed plant spacing. Patent JP5034668B2 proposes a chain-breaking transplanting machine that peels off the seedling paper on the outside of the chain-type paper pot, but the substrate loss rate of bare-root seedlings is large after peeling, and the root damage phenomenon is obvious. Patent CN Patent 104663084A proposes a special chain-breaking transplanter that works with a rectangular cross-section seedling container (patent CN100401871C). However, due to the large size and complex process of manufacturing the rectangular cross-section chain seedling container, it is not suitable for small and medium-sized planting. Patents CN114793570A and CN112314134A propose a stem-clamping type and an insertion type mechanized seedling taking device, respectively. However, since they act directly on the crop roots and stems, they are only suitable for transplanting crops with thick roots and stems. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a low-damage seedling removal and chain breaking device for paper chain seedling pots, in response to the above problems and requirements.

[0004] To solve the above technical problems, the present invention adopts the following technical solution:

[0005] A low-damage seedling removal and chain-breaking device for paper-based chain seedling pots includes a synchronous belt seedling pushing device, a chain-breaking device, a transmission device, a chain-breaking start / stop device, a limiting support device, and a seedling receiving device. The seedling receiving device is used to hold the chain seedling pots in their initial aggregated state and to correct the meshing posture between the chain seedling pots and the synchronous belt seedling pushing device. The synchronous belt seedling pushing device is used to orderly unfold the aggregated chain seedling pots into a chain state using a meshing pushing method, and then transport them to the chain-breaking device. The individual seedlings after being broken by the chain-breaking device are then... The seedling pots are transported to the seedling inlet; the chain-breaking device is used to cut the connection between adjacent chain pots to form independent seedlings using a counter-impact chain-breaking method; the transmission device is used to drive the chain seedling pots to feed intermittently using an incomplete gear transmission method, so that the chain seedling pots and the chain-breaking device are in a relatively stationary state in the feeding direction during the chain-breaking process; the chain-breaking start-stop device uses a cam and contact switch to achieve precise start-stop of the chain-breaking device; the limiting support device is used to keep the chained / independent pots in a vertical upward state as they move forward and fall into the ground.

[0006] Furthermore, the synchronous belt seedling pushing device includes a synchronous belt driven wheel, a synchronous belt, seedling pushing baffles, and a synchronous belt driving wheel. The synchronous belt driven wheel and synchronous belt driving wheel are installed in the middle of the driven shaft and driving shaft in the transmission device and can rotate synchronously. The synchronous belt runs around the outside of the synchronous belt driving wheel and the synchronous belt driven wheel, and rotates under the drive of the synchronous belt driving wheel and the synchronous belt driven wheel. Multiple seedling pushing baffles are axially equidistantly and vertically fixed on the outer surface of the synchronous belt. The synchronous belt is used to drive the seedling pushing baffles to move by rotation, thereby driving the chain seedling pots to move in an orderly manner towards the chain breaking device.

[0007] Furthermore, the chain breaking device includes a double-blade base for chain breaking, a chain breaking blade, a single-blade base for chain breaking, a parallel gripper cylinder, and a cylinder base. The double-blade base for chain breaking is fixed to the parallel gripper cylinder, and two chain breaking blades are mounted on the double-blade base to form a concave die. The single-blade base for chain breaking and the double-blade base for chain breaking are mounted opposite each other on the parallel gripper cylinder, and one chain breaking blade is mounted on the single-blade base to form a convex die. During the chain breaking process, the chain breaking blades reciprocate in opposite directions under the push of the parallel gripper cylinder, and the concave die and the convex die mesh with each other to complete the chain breaking operation. The parallel gripper cylinder is fixed above the cylinder base, and the cylinder base is fixed on the limiting support device.

[0008] Furthermore, the transmission device includes a driven shaft, a power input shaft, a one-way bearing, an incomplete gear drive wheel, an incomplete gear driven wheel, and a drive shaft; one-way bearings are respectively installed on both sides of the driven shaft, the power input shaft, and the drive shaft, and fixed to the support side plate in the limiting support device; one end of the power input shaft is used to connect to the power of the transplanter, and the other end is equipped with an incomplete gear drive wheel; the incomplete gear driven wheel is installed at one end of the drive shaft and meshes with the incomplete gear drive wheel; the incomplete gear drive wheel is used to drive the incomplete gear driven wheel to alternately stop between the meshing area and the rest area through continuous rotation, and the positioning of the incomplete gear driven wheel when it is in the rest area is achieved by the locking arc, thereby ensuring precise meshing transmission.

[0009] Furthermore, the chain breakage start / stop device includes a contact switch mounting base, a contact switch, and a cam. The contact switch mounting base is fixed to the support side plate of the limit support device and is used to fix the contact switch. The cam is connected to the power input shaft via a flat key and rotates with it. When the incomplete gear is in the resting zone, it drives the cam protrusion to push the contact switch to close and control the chain breakage device to start. When the incomplete gear is in the meshing zone, it drives the cam protrusion to leave the contact switch, and the contact switch rebounds by its own elasticity to open and control the chain breakage device to stop.

[0010] Furthermore, the limiting support device includes a seedling posture correction brush, a brush holder, a seedling posture correction side plate, a chain breakage correction side plate, a seedling transport correction side plate, and a support side plate. The chain breakage correction side plate, the seedling transport correction side plate, and the support side plate are all vertically arranged on the left and right sides of the horizontal translation track to correct the seedling posture of the individual seedling pots, ensuring that the individual seedling pots move upright towards the arc-shaped translation track. The seedling posture correction side plates are fixed on the left and right sides of the arc-shaped translation track to guide the individual seedling pots to move along the arc-shaped translation track and fall into the ground. The brush holder is fixed to the front end of the arc-shaped section of the arc-shaped translation track, and the seedling posture correction brush is fixed on the brush holder and tilted downwards to correct the seedling posture of the individual seedling pots, ensuring that the individual seedling pots fall into the ground upright.

[0011] Furthermore, the seedling receiving device includes a seedling receiving tray, a feeding posture correction plate, and a seedling tray fixing device; the seedling receiving tray is used to place the chain pot seedling trays in the initial aggregated state, and the seedling receiving tray is fixed above the seedling tray fixing device; the feeding posture correction plate is used to correct the posture and movement trajectory of the chain pot seedling trays during the feeding stage, ensuring that the synchronous belt pushing seedling device and the chain pots are precisely engaged; the seedling tray fixing device is used to connect the seedling receiving device and the limiting support device, and the seedling tray fixing device is fixed to the limiting support device by bolts.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0013] This invention uses chain-type seedling trays as raw materials, completing the seedling cultivation process through steps such as filling with nutrient substrate, sowing, and covering with soil. It utilizes a low-damage seedling removal and chain-breaking device in paper chain-type seedling trays, incorporating a synchronous belt seedling-lifting device, a chain-breaking device, a transmission device, a chain-breaking start / stop device, a limiting support device, and a seedling-bearing device. This achieves low-damage, high-speed, and automated seedling removal. It can be adapted to various types of semi-automatic transplanters, such as duckbill type, hanging cup type, and seedling guide tube type, to achieve fully automated transplanting of specialty crops such as tomatoes and peppers. It has a wide range of applications and can be used in many scenarios. The synchronous belt seedling-lifting method effectively solves the problems of high seedling damage, substrate loss, and root damage rates, which are common with existing stem-clamping and insertion-type mechanized seedling removal devices, leading to long post-transplanting recovery periods. This invention utilizes an automated, low-damage seedling removal and chain-breaking device to effectively solve the problems of high labor intensity and low efficiency in manual and semi-automatic transplanting in my country, as well as high seedling and root damage rates and long recovery periods in automated transplanting. It lays the foundation for the development of transplanting technology towards low-damage, high-speed, simplified, automated, labor-saving, and unmanned operation.

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 A diagram illustrating the process of spreading out a seedling tray in a chain pot;

[0016] Figure 2 A schematic diagram of a chain-pot seedling cultivation book unfolding into a chain;

[0017] Figure 3 A schematic diagram of chain-pot seedling cultivation;

[0018] Figure 4 A schematic diagram of the low-damage seedling removal and chain breaking device for chain-type seedling pots;

[0019] Figure 5 This is a schematic diagram of the synchronous belt seedling pushing device.

[0020] Figure 6 This is a three-dimensional structural diagram of the chain breaking device;

[0021] Figure 7 This is a three-dimensional structural diagram of the transmission device;

[0022] Figure 8 A schematic diagram of an incomplete gear mechanism;

[0023] Figure 9 A three-dimensional structural schematic diagram of the chain break start / stop device;

[0024] Figure 10 This is a three-dimensional structural diagram of the limiting support device;

[0025] Figure 11 This is a three-dimensional structural diagram of the seedling support device;

[0026] The list of attachments represented by each number is as follows:

[0027] 1. Synchronous belt seedling pushing device;

[0028] 1-1. Synchronous belt driven pulley; 1-2. Synchronous belt; 1-3. Seedling pusher baffle; 1-4. Synchronous belt drive pulley;

[0029] 2. Chain breaking device;

[0030] 2-1. Double-blade base for chain breakage knife; 2-2. Chain breakage knife; 2-3. Single-blade base for chain breakage knife; 2-4. Parallel gripper cylinder; 2-5. Cylinder base;

[0031] 3. Transmission device;

[0032] 3-1. Driven shaft; 3-2. Power input shaft; 3-3. One-way bearing; 3-4. Incomplete gear drive wheel; 3-5. Incomplete gear driven wheel; 3-6. Drive shaft;

[0033] 4. Chain breakage start / stop device;

[0034] 4-1. Mounting base; 4-2. Contact switch; 4-3. Cam;

[0035] 5. Limiting support device;

[0036] 5-1. Seedling placement posture correction brush; 5-2. Brush support; 5-3. Seedling placement limiting side plate; 5-4. Chain break limiting side plate; 5-5. Seedling transport limiting side plate; 5-6. Support side plate;

[0037] 6. Seedling support device;

[0038] 6-1. Seedling tray; 6-2. Seedling posture correction board; 6-3. Seedling tray fixing device.

[0039] The process of low-damage seedling removal and chain breaking in chain-type seedling pots is as follows:

[0040] Step S1: Place the appropriate age chain pot seedling tray at the seedling receiving tray, pull the beginning of the chain pot seedling tray along the direction of the synchronous belt seedling pushing device to make it unfold in an orderly chain, place the beginning of the chain seedling pot on the synchronous belt seedling pushing device, and keep the chain seedling pot engaged with the seedling pushing baffle in the synchronous belt seedling pushing device.

[0041] Step S2: Activate the paper chain seedling pot low-damage seedling removal and chain breaking device. Use the power transmitted from the adapted semi-automatic transplanter to drive the chain seedling pot low-damage seedling removal and chain breaking unit to unfold the chain seedling pot in an orderly manner. After the chain breaking device operates, it forms an independent seedling pot. The independent seedling pot is then transported to the seedling inlet by the synchronous belt pushing seedling device. It works precisely with the adapted semi-automatic transplanter to achieve low-damage fully automatic transplanting.

[0042] like Figure 4 As shown, a low-damage seedling removal and chain-breaking device for paper chain seedling pots is characterized by comprising a synchronous belt pushing seedling removal device 1, a chain-breaking device 2, a transmission device 3, a chain-breaking start / stop device 4, a limiting support device 5, and a seedling receiving device 6. The synchronous belt seedling pushing device 1 uses an interlocking pushing method to orderly unfold the grouped aggregated chain-pot seedling trays into a chain of seedling pots, which are then transported to the chain-breaking device. After the chain-breaking operation, the individual seedling pots are transported to the seedling inlet. The chain-breaking device 2 uses a counter-impact chain-breaking method to cut off the connection between adjacent chain pots to form individual seedling pots. The transmission device 3 uses an incomplete gear transmission method to convert continuous motion into intermittent feeding motion, ensuring that the chain-type seedling pots and the chain-breaking device are in a relatively stationary state in the feeding direction during the chain-breaking process. The chain-breaking start-stop device 4 uses a cam and contact switch combination to achieve precise start-stop of the chain-breaking device. The limiting support device 5 is used to limit the movement trajectory and posture of the chain-type / independent pots and to support the orderly installation of each device to form the overall module of the seedling taking device. The seedling receiving device 6 is used to place the grouped aggregated chain-pot seedling trays in the initial state and to correct the interlocking posture of the chain-type seedling pots and the synchronous belt seedling pushing device.

[0043] This device is theoretically applicable to various types of semi-automatic transplanters, such as duckbill type, hanging cup type, and seedling guide tube type. It can realize fully automatic transplanting of special crops such as tomatoes and peppers, and has a wide range of applications and multiple usage scenarios.

[0044] like Figure 5 As shown, the synchronous belt seedling pushing device 1 includes a synchronous belt driven wheel 1-1, a synchronous belt 1-2, a seedling pushing baffle 1-3, and a synchronous belt driving wheel 1-4. The synchronous belt driven wheel 1-1 and the synchronous belt driving wheel 1-4 are installed in the middle of the driven shaft 3-1 and the driving shaft 3-6 in the transmission device 3, and are connected to the drive shaft 3-6 by keyways and set screws to achieve synchronous rotation; the synchronous belt 1-2 winds around the synchronous belt driving wheel 1-4 and the synchronous belt driven wheel 1-1, and meshes with them to achieve feeding motion; the seedling pushing baffle 1-3 is fixed at equal intervals in groups of six on the outside of the synchronous belt 1-2, with the spacing between groups being twice the spacing within groups. During operation, the seedling pushing baffle meshes with the chain seedling pots to push the chain seedling pots to move in an orderly manner.

[0045] like Figure 6As shown, the chain breaking device 2 includes a double-blade chain breaking base 2-1, a chain breaking blade 2-2, a single-blade chain breaking base 2-3, a parallel gripper cylinder 2-4, and a cylinder base 2-5. The double-blade chain breaking base 2-1 is fixed to the parallel gripper cylinder 2-4, and two chain breaking blades are mounted on the double-blade chain breaking base 2-1 to form a concave die. The single-blade chain breaking base 2-3 is mounted opposite to the double-blade chain breaking base 2-1 on the parallel gripper cylinder 2-4, and one chain breaking blade is mounted on the single-blade chain breaking base 2-1 to form a convex die. During the chain breaking process, the chain breaking blade 2-2 moves reciprocally in opposite directions under the push of the parallel gripper cylinder 2-4, and the concave die and convex die mesh with each other to complete the chain breaking operation. The parallel gripper cylinder 2-4 is fixed above the cylinder base 2-5, and the cylinder base 2-5 is fixed to the support side plate 5-6 in the limiting support device 5.

[0046] like Figure 7-8 As shown, the transmission device 3 includes a driven shaft 3-1, a power input shaft 3-2, a one-way bearing 3-3, an incomplete gear drive wheel 3-4, an incomplete gear driven wheel 3-5, and a drive shaft 3-6. One-way bearings are installed on both sides of the driven shaft 3-1, power input shaft 3-2, and drive shaft 3-6, and fixed to the support side plate 5-6 in the limiting support device 5. One end of the power input shaft is used to connect to the transplanter's power supply, and the other end is equipped with the incomplete gear drive wheel 3-4. The incomplete gear driven wheel 3-5 is installed at one end of the drive shaft 3-6 and meshes with the incomplete gear drive wheel 3-4. The incomplete gear drive wheel 3-4 rotates continuously, while the incomplete gear driven wheel 3-5 rotates intermittently in the meshing and resting areas. A locking arc is used to position the incomplete gear in the resting area, thereby ensuring precise meshing transmission.

[0047] like Figure 9 As shown, the chain breakage start / stop device 4 includes a contact switch mounting base 4-1, a contact switch 4-2, and a cam 4-3. The contact switch mounting base is fixed to the support side plate 5-6 in the limiting support device 5 and is used to fix the contact switch. The cam 4-3 is connected to the power input shaft 3-2 via a flat key and rotates with it. When the incomplete gear is in the resting zone, the cam protrusion pushes the contact switch 4-2 to close, controlling the chain breakage device 2 to start. When the incomplete gear is in the meshing zone, the contact switch 4-2 rebounds by its own elasticity to open, controlling the chain breakage device 2 to stop.

[0048] like Figure 10As shown, the limiting support device 5 includes a seedling posture correction brush 5-1, a brush bracket 5-2, a seedling placement limiting side plate 5-3, a chain break limiting side plate 5-4, a seedling transport limiting side plate 5-5, and a support side plate 5-6. The seedling posture correction brush 5-1 is fixed to the brush bracket and is used to correct the seedling placement posture of the individual seedling pots, ensuring that the individual seedling pots are placed upright. The brush bracket 5-2 is fixed to the support side plate 5-6. The seedling placement limiting side plate 5-3 is fixed to the support side plate 5-6 and is used to correct the movement trajectory of the individual seedling pots. The chain break limiting side plate 5-4 is fixed to the support side plate 5-6 and is used to limit the movement trajectory and posture of the individual seedling pots during chain breakage. The seedling transport limiting side plate 5-5 is installed on the support side plate 5-6 and is used to limit the movement trajectory and posture of the chain seedling pots during seedling transport. The support side plate 5-6 is used to support the low-damage seedling removal chain breakage device to form a modular unit.

[0049] like Figure 11 As shown, the seedling receiving device 6 includes a seedling receiving tray 6-1, a feeding posture correction plate 6-2, and a seedling tray fixing device 6-3. The seedling receiving tray 6-1 is used to place the chain-pot seedling trays in their initial aggregated state, and the seedling receiving tray 6-1 is fixed above the seedling tray fixing device 6-3; the feeding posture correction plate 6-2 is used to correct the posture and movement trajectory of the chain-pot seedling trays during the feeding stage, ensuring precise engagement between the synchronous belt pushing seedling device and the chain pots; the seedling tray fixing device 6-3 is used to connect the seedling receiving device 6 and the limiting support device 5, and the seedling tray fixing device 6-3 is fixed to the support side plate 5-6 by bolts.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-damage seedling removal and chain-breaking device for paper chain-type seedling pots, characterized in that, The device includes a synchronous belt seedling pushing device (1), a chain breaking device (2), a transmission device (3), a chain breaking start / stop device (4), a limiting support device (5), and a seedling receiving device (6). The seedling receiving device (6) is used to place the chain-pot seedling trays in the initial state of group aggregation and to correct the meshing posture between the chain seedling trays and the synchronous belt seedling pushing device. The synchronous belt seedling pushing device (1) is used to orderly unfold the chain-pot seedling trays in the group aggregation state to form a chain of seedling trays by meshing and pushing seedlings, and to transport them to the chain breaking device. The independent seedlings after being broken by the chain breaking device (2) are then separated. The pot is moved to the seedling inlet; the chain breaking device (2) is used to cut the connection between adjacent chain pots to form independent seedlings using a counter-clamping chain breaking method; the transmission device (3) is used to drive the chain seedling pots to feed intermittently using an incomplete gear transmission method, so that the chain seedling pots and the chain breaking device are in a relatively stationary state in the feeding direction during the chain breaking process; the chain breaking start and stop device (4) uses a cam and contact switch to achieve precise start and stop of the chain breaking device; the limiting support device (5) is used to keep the chained / independent pots in a vertical upward state and move forward and fall into the ground; The transmission device (3) includes a driven shaft (3-1), a power input shaft (3-2), a one-way bearing (3-3), an incomplete gear drive wheel (3-4), an incomplete gear driven wheel (3-5), and a drive shaft (3-6). One-way bearings are installed on both sides of the driven shaft (3-1), the power input shaft (3-2), and the drive shaft (3-6), and are fixed on the support side plate (5-6) in the limiting support device (5). One end of the power input shaft is used to connect to the power of the transplanter, and the other end is equipped with an incomplete gear drive wheel (3-4). The incomplete gear driven wheel (3-5) is installed on one end of the drive shaft (3-6) and meshes with the incomplete gear drive wheel (3-4). The incomplete gear drive wheel (3-4) is used to drive the incomplete gear driven wheel (3-5) to alternately stop between the meshing area and the rest area through continuous rotation. The locking arc realizes the positioning of the incomplete gear driven wheel (3-5) when it is in the rest area, thereby ensuring precise meshing transmission. The chain breakage start / stop device (4) includes a contact switch fixing seat (4-1), a contact switch (4-2), and a cam (4-3). The contact switch fixing seat is fixed on the support side plate (5-6) in the limit support device (5) and is used to fix the contact switch. The cam (4-3) is connected to the power input shaft (3-2) by a flat key and rotates with it. When the incomplete gear is in the rest area, it drives the cam protrusion to push the contact switch (4-2) to close and control the chain breakage device (2) to start. When the incomplete gear is in the meshing area, it drives the cam protrusion to leave the contact switch (4-2). The contact switch (4-2) rebounds and disconnects by its own elastic force to control the chain breakage device (2) to stop.

2. The low-damage seedling removal and chain-breaking device for paper chain-type seedling pots according to claim 1, characterized in that, The synchronous belt seedling pushing device (1) includes a synchronous belt driven wheel (1-1), a synchronous belt (1-2), a seedling pushing baffle (1-3), and a synchronous belt driving wheel (1-4). The synchronous belt driven wheel (1-1) and the synchronous belt driving wheel (1-4) are installed in the middle of the driven shaft (3-1) and the driving shaft (3-6) in the transmission device (3) and can rotate synchronously. The synchronous belt (1-2) runs around the outside of the synchronous belt driving wheel (1-4) and the synchronous belt driven wheel (1-1) and rotates under the drive of the synchronous belt driving wheel (1-4) and the synchronous belt driven wheel (1-1). Multiple seedling pushing baffles (1-3) are axially and vertically fixed at equal intervals on the outer surface of the synchronous belt (1-2). The synchronous belt is used to drive the seedling pushing baffles to move by rotation, thereby driving the chain seedling pots to move in an orderly manner towards the chain breaking device (2).

3. The low-damage seedling removal and chain-breaking device for paper chain-type seedling pots according to claim 1, characterized in that, The chain breaking device (2) includes a double-blade base (2-1), a chain breaking blade (2-2), a single-blade base (2-3), a parallel gripper cylinder (2-4), and a cylinder base (2-5). The double-blade base (2-1) is fixed to the parallel gripper cylinder (2-4), and two chain breaking blades are installed on the double-blade base (2-1) to form a concave mold. The single-blade base (2-3) and the double-blade base (2-1) are installed opposite to each other on the parallel gripper cylinder (2-4), and one chain breaking blade is installed on the single-blade base (2-3) to form a convex mold. During the chain breaking process, the chain breaking blade (2-2) moves back and forth in opposite directions under the push of the parallel gripper cylinder (2-4), and the concave mold and the convex mold mesh with each other to complete the chain breaking operation. The parallel gripper cylinder (2-4) is fixed above the cylinder base (2-5), and the cylinder base (2-5) is fixed on the limiting support device (5).

4. The low-damage seedling removal and chain-breaking device for paper chain-type seedling pots according to claim 1, characterized in that, The limiting support device (5) includes a seedling posture correction brush (5-1), a brush holder (5-2), a seedling placement limiting side plate (5-3), a chain break limiting side plate (5-4), a seedling transport limiting side plate (5-5), and a support side plate (5-6). The chain break limiting side plate (5-4), the seedling transport limiting side plate (5-5), and the support side plate (5-6) are all vertically arranged on the left and right sides of the horizontal translation track to correct the seedling placement posture of the independent seedling pots and ensure independent seedling placement. The seedling pots move upright along the arc-shaped translation track. The seedling limiting side plate (5-3) is fixed on the left and right sides of the arc-shaped translation track to guide the individual seedling pots to move along the arc-shaped translation track and fall into the ground. The brush bracket (5-2) is fixed at the front end of the arc section of the arc-shaped translation track. The seedling posture correction brush (5-1) is fixed on the brush bracket and tilted downward to correct the seedling posture of the individual seedling pots and ensure that the individual seedling pots fall into the ground upright.

5. The low-damage seedling removal and chain-breaking device for paper chain-type seedling pots according to claim 1, characterized in that, The seedling receiving device (6) includes a seedling receiving tray (6-1), a feeding posture correction plate (6-2), and a seedling tray fixing device (6-3). The seedling receiving tray (6-1) is used to place the chain pot seedling trays in the initial state of group aggregation. The seedling receiving tray (6-1) is fixed above the seedling tray fixing device (6-3). The feeding posture correction plate (6-2) is used to correct the posture and movement trajectory of the chain pot seedling trays during the feeding stage, ensuring that the synchronous belt pushing seedling device and the chain pots are accurately engaged. The seedling tray fixing device (6-3) is used to connect the seedling receiving device (6) and the limiting support device (5). The seedling tray fixing device (6-3) is fixed to the limiting support device (5) by bolts.

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