A full-automatic transplanter's seedling taking and throwing device

Abstract

The application discloses a kind of full-automatic transplanting machine's take and throw seedling device, it includes rack, rack is installed with the lifting mechanism capable to the seedling tray of stacking is lifted, still include whole line pushing mechanism;Rack is also installed with the ejection mechanism below whole line pushing mechanism;Lifting mechanism is located in the side of ejection mechanism;Lifting mechanism is installed with rest rack, rest rack has multiple vertical arrangement for the layer plate of rest seedling tray;Rack is also installed with horizontal pushing mechanism, horizontal pushing mechanism can push seedling tray away from rest rack;Rack is also installed with single seedling separation mechanism in front of whole line pushing mechanism, single seedling separation mechanism includes separation frame and supporting plate, separation frame has multiple equidistant arrangement and upper and lower through-penetrating accommodating hole, supporting plate has seedling leakage hole.The seedling device of the application utilizes flow line operation principle, positioning takes seedling, queues in advance, fixed-point seedling is thrown, and operation efficiency is greatly improved, and layout is reasonable, compact structure, small, facilitate machine small-scale.

Description

Technical Field

[0001] This invention relates to the field of seedling transplanting technology, and in particular to a seedling picking and placing device for a fully automatic transplanter. Background Technology

[0002] The technique of raising seedlings before transplanting is widely used in the cultivation of various crops. This practice not only improves seed germination rate and seedling survival rate but also effectively controls pests and diseases, thus creating favorable conditions for crop growth. Currently, paper pots or biodegradable seedling trays are commonly used as carriers for cultivating seedlings. These carriers have good air permeability and moisture retention, which helps root development, but they also have certain limitations. First, the initial cost of using these carriers is relatively high, which can become a significant expense in the long run for large-scale agricultural cultivation. Second, although they are called "biodegradable," complete degradation actually takes time, during which time it may affect soil structure. Furthermore, for some sensitive crops, incompletely degraded residues may adversely affect their growth, thereby reducing the survival rate after transplanting.

[0003] In the prior art, patent CN118285206A discloses a substrate block seedling transplanter, which includes a lifting device, a first conveying device, a separating device, a second conveying device, a pushing device, and a conveying and planting device. During operation, the first conveying device sends stacked seedling trays to the lifting device, which then raises the trays to allow individual seedling trays to enter the lifting channel of the separating device. The pushing structure then pushes the individual seedling trays to the second conveying device. The seedling trays on the second conveying device are positioned by photoelectric sensors, and a separating cylinder pushes a single row of substrate block seedlings to the inclined conveying and planting unit, completing the distribution from stacked seedling trays to individual seedling trays and then to single rows of substrate block seedlings. This patented technology can achieve automatic distribution from individual trays to individual rows of seedlings, separating them layer by layer. However, the unreasonable layout of the various devices in this patent results in a large overall structure and a bulky machine. Furthermore, while this patent can achieve two-level separation of seedling trays and rows, it cannot achieve accurate individual separation of substrate block seedlings, making it difficult to meet the seedling supply needs of duckbill-type transplanting mechanisms. Furthermore, in this patent, the seedling tray requires two mechanisms to work together to separate, and the complex structure increases the complexity of control. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a seedling feeding and dispensing device for a fully automatic transplanter that has a reasonable layout, compact structure, small size, facilitates the miniaturization of machinery, and can supply seedlings to the duckbill transplanting mechanism.

[0005] Technical solution: To achieve the above objectives, the fully automatic transplanter of the present invention includes a seedling picking and placing device, which includes a frame, the frame being equipped with a lifting mechanism capable of lifting stacked seedling trays, and also includes a row pushing mechanism; the seedling tray has multiple seedling holes arranged in a square array, the seedling holes having a vertically connected structure, and seedling blocks can be cultivated in the seedling holes; The frame is also equipped with an ejector mechanism located below the row pushing mechanism. The ejector mechanism can switch between a retracted state and a lifting state. When the ejector mechanism is in the retracted state, there is a temporary placement space between the row pushing mechanism and the ejector mechanism for a single seedling tray to enter. The lifting mechanism is located to the side of the ejector mechanism. The lifting mechanism is equipped with a shelf, which has multiple vertically arranged shelves for placing the seedling trays. The shelves can prevent the seedling blocks from falling out of the seedling holes. There are gaps between adjacent seedling trays placed on the shelf. The frame is also equipped with a horizontal pushing mechanism, which can push the seedling tray away from the shelf and move the seedling tray between the row pushing mechanism and the ejection mechanism. The frame is also equipped with a single seedling separation mechanism located in front of the row pushing mechanism. The single seedling separation mechanism includes a separation frame and a first tray. The separation frame has multiple equidistant and vertically connected receiving holes. The first tray has a seedling leakage hole. The separation frame can be moved laterally to align the different receiving holes with the seedling leakage hole vertically.

[0006] Furthermore, the frame has a placement platform for placing empty seedling trays, and the placement platform and the lifting mechanism are located on opposite sides of the row-pushing mechanism. After the seedlings in the trays are completely removed, the empty trays are further pushed laterally to the placement platform by the horizontal pushing mechanism. This facilitates the recycling and management of empty seedling trays.

[0007] Furthermore, the lifting mechanism includes a power mechanism, a drive screw, a screw nut, and a second support plate; the power mechanism and the drive screw are driven together, the screw nut is fixed to the second support plate, and the screw nut and the drive screw are in a screw-screw pair fit; the second support plate can drive the entire shelf to rise and fall. By operating the drive screw, the seedling trays on each shelf can be precisely positioned at the same height as the horizontal pushing mechanism, which can then separate each seedling tray one by one.

[0008] Furthermore, the lateral pushing mechanism includes a first electric cylinder and a first push plate mounted on the telescopic rod of the first electric cylinder. In use, the first electric cylinder first moves the first push plate laterally a first distance, causing the seedling tray to move into the temporary placement space between the row pushing mechanism and the ejection mechanism. After all the seedlings in the seedling tray have been removed, the telescopic rod of the first electric cylinder extends a second distance, pushing the empty seedling tray to the placement platform located on the other side of the row pushing mechanism.

[0009] Furthermore, the ejection mechanism includes a lifting cylinder, a lifting plate, and lifting blocks. The lifting cylinder drives the lifting plate to move up and down, and multiple lifting blocks are installed on the lifting plate in a square array. The number and layout of the lifting blocks are consistent with those of the seedling holes on the seedling tray, so that when the lifting plate rises under the action of the lifting cylinder, each lifting block corresponds to a seedling hole, and all seedling blocks in the seedling holes are ejected simultaneously.

[0010] Furthermore, the seedling separating device also includes a guide seat fixed relative to the frame, the guide seat having multiple partition plates, a guide groove being formed between adjacent partition plates, and a hollow clearance hole being provided at the position of the guide seat above the ejection mechanism, with a portion of the partition plate placed on the hollow clearance hole.

[0011] Furthermore, the row-pushing mechanism includes a second electric cylinder, a pushing seat, and a second push plate; the cylinder seat of the second electric cylinder is fixed on the guide seat, the telescopic rod is connected to the pushing seat, and the pushing seat is connected to a number of second push plates equal to the number of guide slots, and each second push plate is connected to the pushing seat through a connecting rod.

[0012] Furthermore, the guide seat has an inclined portion, the row pushing mechanism is located on the high side of the inclined portion, and the single seedling separation mechanism is located on the low side of the inclined portion. The inclined portion can make the single seedling separation mechanism a lower position, so that the seedling drop point is low and the seedling block can be smoothly placed into the duckbill mechanism.

[0013] In addition, one side of the guide seat has an inclined sliding plate, which is located on the same side as the placement platform. After the empty seedling tray is pushed away from the temporary placement space by the horizontal pushing mechanism, the seedling tray slides down the sliding plate onto the placement platform.

[0014] Furthermore, a rack is fixed on the separating frame, a motor is mounted on the first support plate, and a gear that meshes with the rack is fixed on the output shaft of the motor.

[0015] Beneficial effects: The seedling picking and placing device of the fully automatic transplanter of the present invention has the following beneficial effects: (1) The components of the seedling separation device were redesigned and reassembled so that each component is reasonably arranged in the three axes of X, Y and Z according to the pushing direction. Specifically, the horizontal pushing mechanism and the single seedling separation mechanism both run along the X axis and are staggered from each other, the whole row pushing mechanism runs along the Y axis, and the ejection mechanism and the lifting mechanism run along the Z axis and are staggered from each other. Combined with the specific positional relationship between each component, a structure with the ejection mechanism as the center is formed, which is balanced in front and back, left and right, and up and down, which increases the compactness of the structure and reduces the overall volume.

[0016] (2) By controlling the coordinated operation of each component, it is possible to separate seedling trays one by one, separate seedling blocks one by one, and separate seedling blocks one by one. The layers are distinct, and accurate seedling separation can be achieved. The operation is highly reliable. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the seedling feeding device; Figure 2 This is a three-dimensional first side view of the seedling feeding device; Figure 3 This is a three-dimensional second side view of the seedling feeding device; Figure 4 This is a diagram showing the combined structure of the seedling rack and seedling tray; Figure 5 This is a structural diagram of the lifting mechanism; Figure 6 This is a structural diagram of the single-seedling separation mechanism; Figure 7 This is a bottom structural diagram of the single-seedling separation mechanism; Figure 8 This is a structural diagram of the guide seat; Figure 9 This is a structural diagram of the seedling feeding device in a preferred embodiment.

[0018] In the diagram: a-seedling block; 1-frame; 11-placement platform; 2-lifting mechanism; 21-power mechanism; 22-drive screw; 23-screw nut; 24-second support plate; 3-row pushing mechanism; 31-second electric cylinder; 32-push seat; 33-second push plate; 34-connecting rod; 4-seedling tray; 41-seedling hole; 5-ejection mechanism; 51-lifting cylinder; 52-lifting plate; 53-lifting block; 6-shelf; 61-layer board; 7-horizontal pushing mechanism; 71-first electric cylinder; 72-first push plate; 8-single seedling separation mechanism; 81-separation frame; 81a-accommodation hole; 82-first support plate; 82a-seedling leakage hole; 83-rack; 84-motor; 85-gear; 9-guide seat; 91-divider plate; 92-hollowed-out clearance hole; 93-inclined part; 94-slide plate part. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] like Figures 1 to 3 The seedling feeding device of the fully automatic transplanter shown includes a frame 1, which is equipped with a lifting mechanism 2 that can lift the stacked seedling trays 4, and also includes a row pushing mechanism 3; the seedling trays 4 have multiple seedling holes 41 arranged in a square array, the seedling holes 41 have a vertically connected structure, and seedling blocks a can be cultivated in the seedling holes 41.

[0021] The frame 1 is also equipped with an ejector mechanism 5 located below the row pushing mechanism 3. The ejector mechanism 5 can switch between a retracted state and a lifting state. When the ejector mechanism 5 is in the retracted state, there is a temporary placement space between the row pushing mechanism 3 and the ejector mechanism 5 for a single seedling tray 4 to enter. The lifting mechanism 2 is located to the side of the ejector mechanism 5. The lifting mechanism 2 is equipped with a shelf 6. The shelf 6 has multiple vertically arranged shelves 61 for placing the seedling trays 4. The shelves 61 can prevent the seedling blocks a from falling out of the seedling holes 41. There are gaps between adjacent seedling trays 4 placed on the shelf 6.

[0022] The frame 1 is also equipped with a horizontal pushing mechanism 7, which can push the seedling tray 4 away from the shelf 6, so that the seedling tray 4 moves between the row pushing mechanism 3 and the ejection mechanism 5.

[0023] The frame 1 is also equipped with a single seedling separation mechanism 8 located in front of the row pushing mechanism 3. The single seedling separation mechanism 8 includes a separation frame 81 and a first tray 82. The separation frame 81 has a plurality of equidistant and vertically connected receiving holes 81a. The first tray 82 has a seedling leakage hole 82a. The separation frame 81 can be horizontally moved so that the different receiving holes 81a and the seedling leakage hole 82a are vertically aligned.

[0024] In this invention, the components of the seedling separation device have been redesigned and reorganized so that each component is rationally arranged in the X, Y, and Z axes according to the pushing direction. Specifically, the horizontal pushing mechanism 7 and the single seedling separation mechanism 8 both run along the X axis and are staggered from each other, the row pushing mechanism 3 runs along the Y axis, and the ejection mechanism 5 and the lifting mechanism 2 run along the Z axis and are staggered from each other. The specific positional relationship between each component forms a structure with the ejection mechanism 5 as the center, which is balanced in front-back, left-right, and up-down directions, increasing the compactness of the structure and reducing the overall volume.

[0025] By controlling the coordinated operation of each component, it is possible to separate seedling trays one by one, seedling blocks one by one, and seedling blocks one by one, with clear layers, accurate seedling separation, and high operational reliability.

[0026] Preferably, the frame 1 has a placement platform 11 for placing empty seedling trays 4, and the placement platform 11 and the lifting mechanism 2 are located on opposite sides of the row pushing mechanism 3. After the seedling block a in the seedling tray 4 is completely removed, the empty seedling tray 4 is further pushed laterally to the placement platform 11 by the horizontal pushing mechanism 7. In this way, it is convenient to collect and manage the empty seedling trays 4.

[0027] Preferably, the lifting mechanism 2 includes a power mechanism 21, a drive screw 22, a screw nut 23, and a second support plate 24; the power mechanism 21 and the drive screw 22 are drivenly connected, the screw nut 23 is fixed on the second support plate 24, and the screw nut 23 and the drive screw 22 are in a screw-screw pair cooperation; the second support plate 24 can drive the entire shelf 6 to rise and fall. By operating the drive screw 22, the seedling trays 4 on each shelf 61 can be precisely positioned at the same height as the horizontal pushing mechanism 7, and the horizontal pushing mechanism 7 can separate each layer of seedling trays 4 one by one.

[0028] Preferably, the horizontal pushing mechanism 7 includes a first electric cylinder 71 and a first push plate 72 mounted on the telescopic rod of the first electric cylinder 71. In use, the first electric cylinder 71 first moves the first push plate 72 laterally a first distance, causing the seedling tray 4 to move into the temporary placement space between the row pushing mechanism 3 and the ejection mechanism 5. After all the seedlings in the seedling tray 4 have been removed, the telescopic rod of the first electric cylinder 71 extends a second distance, pushing the empty seedling tray 4 onto the placement platform 11 located on the other side of the row pushing mechanism 3.

[0029] Preferably, the ejection mechanism 5 includes a lifting cylinder 51, a lifting plate 52, and lifting blocks 53. The lifting cylinder 51 can drive the lifting plate 52 to move up and down, and multiple lifting blocks 53 are installed on the lifting plate 52 in a square array. The number and layout of the lifting blocks 53 are consistent with those of the seedling holes 41 on the seedling tray 4, so that when the lifting plate 52 rises under the action of the lifting cylinder 51, each lifting block 53 corresponds to a seedling hole 41, and all seedling blocks a in the seedling holes 41 are ejected simultaneously.

[0030] Preferably, the seedling separating device further includes a guide seat 9 fixed relative to the frame 1. The guide seat 9 has a plurality of partition plates 91, and a guide groove is formed between adjacent partition plates 91. The guide seat 9 has a hollow clearance hole 92 at a position above the ejection mechanism 5, and a part of the partition plate 91 is placed on the hollow clearance hole 92.

[0031] Preferably, the row pushing mechanism 3 includes a second electric cylinder 31, a pushing seat 32, and a second push plate 33; the cylinder seat of the second electric cylinder 31 is fixed on the guide seat 9, the telescopic rod is connected to the pushing seat 32, and the pushing seat 32 is connected with the same number of second push plates 33 as the guide groove, and each second push plate 33 is connected to the pushing seat 32 through a connecting rod 34.

[0032] Preferably, the guide seat 9 has an inclined portion 93, the row pushing mechanism 3 is located on the high side of the inclined portion 93, and the single seedling separation mechanism 8 is located on the low side of the inclined portion 93. Setting the inclined portion 93 can make the single seedling separation mechanism 8 be in a lower position, so that the seedling drop point is low and the seedling block a can be smoothly placed into the duckbill mechanism.

[0033] In addition, the guide seat 9 has an inclined sliding plate 94 on one side. The sliding plate 94 and the placement platform 11 are located on the same side of the row pushing mechanism 3. After the empty seedling tray 4 is pushed away from the temporary placement space by the horizontal pushing mechanism 7, the seedling tray 4 slides down the sliding plate 94 onto the placement platform 11.

[0034] Preferably, a rack 83 is fixed on the separating frame 81, a motor 84 is mounted on the first support plate 82, and a gear 85 that meshes with the rack 83 is fixed on the output shaft of the motor 84.

[0035] The seedling separation method based on the above-mentioned seedling separation device is as follows: In the initial state, the ejector mechanism 5 is in the retracted state. The power mechanism 21 of the lifting mechanism 2 drives the lead screw 22 to operate, causing the shelf 6 to move up and down, so that the seedling trays 4 of each layer reach the same height as the horizontal pushing mechanism 7. The horizontal pushing mechanism 7 pushes the seedling trays 4 at the same height as it into the temporary placement space between the row pushing mechanism 3 and the ejector mechanism 5. Then, the lifting cylinder 51 of the ejector mechanism 5 raises the lifting plate 52, and all the lifting blocks 53 on the lifting plate 52 enter the corresponding seedling holes 41, pushing out all the seedling blocks a in the seedling trays 4 at the same time. The pushed-out seedling blocks a pass through the hollow clearance holes 92 and are separated into multiple rows by the partition plate 91. Subsequently, the telescopic rod of the second electric cylinder 31 of the whole row pushing mechanism 3 extends a preset distance, and the second push plate 33 causes the foremost seedling block a in the corresponding row to slide down the corresponding guide groove and enter the respective receiving holes 81a of the separating frame 81. The seedling blocks a in the receiving holes 81a aligned with the seedling leakage holes 82a in the separating frame 81 fall down and are caught by the duckbill mechanism for transplanting. The operation of the motor 84 can make the separating frame 81 move laterally, so that the seedling blocks a in different receiving holes 81a fall from the seedling leakage holes 82a. When all the seedling blocks a in the separating frame 81 have fallen, the second electric cylinder 31 continues to push the second push plate 33 a preset distance to push the next row of seedling blocks a into the separating frame 81, and so on, until all the seedling blocks a in all the guide grooves are used up.

[0036] After all the seedling blocks a in the seedling tray 4 are pushed out, the horizontal pushing mechanism 7 continues to push the empty seedling tray 4 to the side, causing the seedling tray 4 to slide down the sliding plate 94 onto the placement platform 11. Then, the telescopic rod of the first electric cylinder 71 retracts, and the lifting mechanism 2 moves the shelf 6 one step distance, so that the next seedling tray 4 is at the same height as the horizontal pushing mechanism 7. The horizontal pushing mechanism 7 continues the horizontal pushing operation of the seedling tray 4, and so on, so that the seedling separation mechanism operates continuously to achieve continuous seedling supply.

[0037] Preferably, such as Figure 9 As shown, the horizontal pushing mechanism 7 has seedling pushing mechanisms 10 on both its upper and lower sides. Each seedling pushing mechanism 10 has a corresponding seedling conveying groove 20. The seedling tray 4 can move along the seedling conveying groove 20 under manual operation. In other embodiments, a conveyor belt can be set in the seedling conveying groove 20 for transporting the seedling tray 4. The movement direction of the seedling tray 4 in the seedling conveying groove 20 is perpendicular to the pushing direction of the seedling pushing mechanism 10, while the pushing direction of the seedling pushing mechanism 10 is parallel to the pushing direction of the horizontal pushing mechanism 7. In use, when the shelf 6 moves upward, for every step the shelf 6 rises (one step is equal to the distance between two adjacent shelves 61), that is, an empty shelf 61 is aligned with the upper seedling pushing mechanism 10. The upper seedling pushing mechanism 10 pushes a new seedling tray 4 into the empty shelf 61, while the horizontal pushing mechanism 7 pushes the seedling tray 4 on the aligned shelf 61 out to the temporary placement space. Thus, as the shelf 6 rises, the emptied shelves 61 are filled with seedling trays 4 again. When the shelf 6 reaches its highest position, it is driven to descend, allowing for the next round of seedling tray pushing. As the shelf 6 descends, each step aligns an empty shelf 61 with the lower seedling pushing mechanism 10. The lower mechanism pushes a new seedling tray 4 into the empty shelf 61, while the pushing mechanism 7 pushes the seedling tray 4 from the aligned shelf 61 into the temporary storage space. This process is repeated as the shelf 6 descends, filling the emptied shelves 61 with seedling trays 4. When the shelf 6 reaches its lowest position, it is driven to rise, allowing for the next round of seedling tray pushing. This continuous process ensures a constant supply of seedling trays 4 to the temporary storage space.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A seedling feeding device for a fully automatic transplanter, comprising a frame (1), wherein the frame (1) is equipped with a lifting mechanism (2) capable of lifting stacked seedling trays (4), and further comprising a row pushing mechanism (3) and a horizontal pushing mechanism (7); the seedling tray has multiple vertically penetrating seedling holes arranged in a square array, wherein seedling blocks can be cultivated in the seedling holes; Its features are: The frame (1) is also equipped with an ejection mechanism (5) located below the row pushing mechanism (3); the ejection mechanism (5) includes a lifting cylinder (51), a lifting plate (52) and lifting blocks (53). The lifting cylinder (51) can drive the lifting plate (52) to move up and down, and multiple lifting blocks (53) are installed on the lifting plate (52) in a square array. The lifting mechanism (2) is located to the side of the ejection mechanism (5); a shelf (6) is installed on the lifting mechanism (2), and the shelf (6) has a plurality of vertically arranged shelves (61) for placing the seedling tray (4); the horizontal pushing mechanism (7) can push the seedling tray (4) away from the shelf (6). It also includes a guide seat (9) fixed relative to the frame (1), the guide seat (9) having a plurality of partition plates (91), a guide groove being formed between adjacent partition plates (91), and the guide seat (9) having a hollow clearance hole (92) at the position above the ejection mechanism (5), the ejected seedling blocks being separated into multiple rows by the partition plates after passing through the hollow clearance hole (92); The frame (1) is also equipped with a single seedling separation mechanism (8) located in front of the row pushing mechanism (3). The single seedling separation mechanism (8) includes a separation frame (81) and a first tray (82). The separation frame (81) has multiple equidistant and vertically connected receiving holes (81a). The first tray (82) has a seedling leakage hole (82a). The separation frame (81) can be horizontally moved so that different receiving holes (81a) and seedling leakage holes (82a) are vertically aligned. The row pushing mechanism (3) can push each row of seedling blocks into the receiving holes (81a) of the separation frame (81) one by one, and the seedling blocks in the receiving holes (81a) fall out of the seedling leakage holes (82a) one by one by the horizontal movement of the separation frame (81). The horizontal pushing mechanism (7) includes a first electric cylinder (71) and a first push plate (72) mounted on the telescopic rod of the first electric cylinder (71). The row pushing mechanism (3) includes a second electric cylinder (31), a pushing seat (32), and a second push plate (33); the cylinder seat of the second electric cylinder (31) is fixed on the guide seat (9), and the telescopic rod is connected to the pushing seat (32). The pushing seat (32) is connected with the same number of second push plates (33) as the guide groove. Each second push plate (33) is connected to the pushing seat (32) through a connecting rod (34). A rack (83) is fixed on the separation frame (81), and a motor (84) is installed on the first support plate (82). A gear (85) that meshes with the rack (83) is fixed on the output shaft of the motor (84).

2. The seedling receiving and placing device of the fully automatic transplanter according to claim 1, characterized in that, The frame (1) has a placement platform (11) for placing empty seedling trays (4), and the placement platform (11) and the lifting mechanism (2) are located on opposite sides of the row pushing mechanism (3).

3. The seedling receiving and placing device of the fully automatic transplanter according to claim 1, characterized in that, The lifting mechanism (2) includes a power mechanism (21), a drive screw (22), a screw nut (23), and a second support plate (24); the power mechanism (21) and the drive screw (22) are drivenly connected, the screw nut (23) is fixed on the second support plate (24), and the screw nut (23) and the drive screw (22) are in a screw pair cooperation; the second support plate (24) can drive the shelf (6) to lift as a whole.

4. The seedling receiving and placing device of the fully automatic transplanter according to claim 1, characterized in that, The guide seat (9) has an inclined portion (93), the row pushing mechanism (3) is located on the high side of the inclined portion (93), and the single seedling separation mechanism (8) is located on the low side of the inclined portion (93).

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