Seedling taking and throwing device of full-automatic transplanter

Abstract

The invention discloses a seedling taking and putting device of a full-automatic transplanter, which comprises a rack, a lifting mechanism capable of lifting stacked seedling trays is mounted on the rack, and the seedling taking and putting device also comprises a whole-row pushing mechanism; the rack is further provided with an ejection mechanism located below the whole row of pushing mechanisms. The lifting mechanism is located on the side of the ejection mechanism. A shelf is mounted on the lifting mechanism, and a plurality of laminates which are vertically arranged and are used for placing seedling trays are arranged on the shelf; a transverse pushing mechanism is further mounted on the rack, and the transverse pushing mechanism can push the seedling trays away from the shelf; a single seedling separating mechanism located in front of the whole-row pushing mechanism is further installed on the machine frame and comprises a separating frame and a supporting plate, a plurality of vertically-through containing holes arranged at equal intervals are formed in the separating frame, and seedling leaking holes are formed in the supporting plate. According to the seedling taking and throwing device, the assembly line operation principle is utilized, positioning seedling taking, advanced queuing and fixed-point seedling throwing are achieved, the operation efficiency is greatly improved, layout is reasonable, the structure is compact, the size is small, and machine miniaturization is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of rice seedling transplanting, in particular to a seedling taking and throwing device of a full-automatic transplanting machine. Background Art

[0002] The technology of raising seedlings before transplanting is widely used in the planting of various crops. This practice can not only improve the seed germination rate and seedling survival rate, but also effectively control the occurrence of pests and diseases, thereby creating favorable conditions for crop growth. At present, when implementing this technology, paper pots or degradable seedling trays are usually used as carriers to cultivate seedlings. These carriers have good air permeability and moisture retention, which are conducive to root development, but they also have certain limitations. First, the one-time use cost of such carriers is relatively high, which will be a considerable expense in the long run for large-scale agricultural planting; secondly, although it is called "degradable", it actually takes a certain amount of time for it to be completely degraded, which may affect the soil structure during this period, and for some sensitive crops, the residues that are not completely degraded may also have an adverse effect on their growth, thereby reducing the survival rate after transplanting.

[0003] In the prior art, patent CN118285206A discloses a matrix block seedling transplanter, which includes a lifting device, a first conveying device, a separation device, a second conveying device, a pushing device and a conveying and planting device. During operation, the first conveying device sends the stacked seedling tray to the lifting device, the lifting device lifts the single seedling tray into the lifting channel of the separation device, and the pushing structure pushes the single seedling tray to the second conveying device. The seedling tray on the second conveying device is positioned by a photoelectric sensor, and the seedling separation cylinder pushes the single row of matrix block seedlings to the inclined conveying and planting unit, completing the delivery from the stacked seedling tray to the single seedling tray and then to the single row of matrix block seedlings. This patented technology can realize the automatic delivery of a single whole tray seedling to a single whole row of seedlings, and separation layer by layer, but the unreasonable layout of each device in the patent leads to a large overall structure, resulting in a large size of the machine, and the patent can realize the two-level separation of the seedling tray and the row, but cannot realize the accurate separation of the matrix block seedlings alone, and it is difficult to meet the seedling supply needs of the duckbill transplanting mechanism. Moreover, in this patent, the seedling tray requires the cooperation of two mechanisms to be separated, and the complex structure increases the complexity of control. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a seedling taking and dropping device for a fully automatic transplanter which has a reasonable layout, compact structure, and small size, is conducive to the miniaturization of machinery and can supply seedlings to a duckbill transplanting mechanism.

[0005] Technical solution: To achieve the above-mentioned purpose, the seedling taking and throwing device of the fully automatic transplanter of the present invention comprises a frame, the frame is equipped with a lifting mechanism capable of lifting the stacked seedling trays, and also comprises a whole row pushing mechanism; the seedling tray is provided with a plurality of seedling raising holes arranged in a square array, the seedling raising holes are a structure that is through-through from top to bottom, and seedling blocks can be cultivated in the seedling raising holes;

[0006] The frame is also equipped with an ejection mechanism located below the entire row of pushing mechanisms, and the ejection mechanism can switch between a retracted state and a jacking state. When the ejection mechanism is in the retracted state, a temporary placement space for a single seedling tray to enter is provided between the entire row of pushing mechanisms and the ejection mechanism; the lifting mechanism is located on the side of the ejection mechanism; a shelf is installed on the lifting mechanism, and the shelf has a plurality of vertically arranged layer plates for placing the seedling trays, the layer plates can prevent the seedling blocks from falling from the seedling raising holes, and there are gaps between adjacent seedling trays placed on the shelf;

[0007] The frame is also equipped with a horizontal pushing mechanism, which can push the seedling tray away from the shelf, so that the seedling tray moves to between the entire row pushing mechanism and the ejection mechanism;

[0008] The frame is also equipped with a single seedling separation mechanism located in front of the entire row of pushing mechanisms, and the single seedling separation mechanism includes a separation frame and a support plate, the separation frame has a plurality of accommodating holes arranged equidistantly and penetrating up and down, the support plate has a seedling leakage hole, and the separation frame can be translated laterally to align the different accommodating holes with the seedling leakage holes up and down.

[0009] Furthermore, the rack has a placement platform for placing the empty seedling trays, and the placement platform and the lifting mechanism are respectively located on both sides of the entire row pushing mechanism. When the seedling blocks in the seedling tray are completely taken out, the empty seedling tray is further pushed horizontally to the placement platform by the horizontal pushing mechanism. In this way, it is convenient to recycle and manage the empty seedling trays.

[0010] Furthermore, the lifting mechanism includes a power mechanism, a driving screw, a screw nut and a support plate; the power mechanism and the driving screw are drivingly connected, the screw nut is fixed on the support plate, and the screw nut and the driving screw form a screw pair; the support plate can drive the entire shelf to rise and fall. By operating the driving screw, the seedling trays on each layer can be accurately placed at the same height as the horizontal pushing mechanism, and the horizontal pushing mechanism can separate the seedling trays on each layer one by one.

[0011] Furthermore, the horizontal pushing mechanism includes a first electric cylinder and a push plate installed on the telescopic rod of the first electric cylinder. When in use, the first electric cylinder first moves the push plate horizontally by a first distance to move the seedling tray to a temporary placement space between the whole row pushing mechanism and the ejection mechanism, and when the seedlings in the seedling tray are taken out, the telescopic rod of the first electric cylinder extends a second distance to push the empty seedling tray to the placement platform located on the other side of the whole row pushing mechanism.

[0012] Furthermore, the ejection mechanism includes a lifting cylinder, a lifting plate and a lifting block, wherein the lifting cylinder can drive the lifting plate to move up and down, and a plurality of the lifting blocks are installed on the lifting plate in a square array. The number and layout of the lifting blocks are consistent with 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 the seedling hole one by one, and the seedling blocks in all the seedling holes are ejected at the same time.

[0013] Furthermore, the seedling separating device also includes a guide seat fixed relative to the frame, the guide seat has a plurality of partition plates, guide grooves are formed between adjacent partition plates, and the guide seat has a hollow clearance hole at a position above the ejection mechanism, and a part of the partition plate is placed on the hollow clearance hole.

[0014] Furthermore, the entire row pushing mechanism includes a second electric cylinder, a pushing seat and a pushing 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 with a number of pushing plates equal to the guide grooves, and each pushing plate is connected to the pushing seat through a connecting rod.

[0015] Furthermore, the guide seat has an inclined portion, the whole 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 provision of the inclined portion can place the single seedling separation mechanism in a lower position, so that the seedling drop point is low and the seedling blocks can be smoothly placed into the duckbill mechanism.

[0016] In addition, one side of the guide seat has an inclined slide plate, and the slide plate and the placement platform are located on the same side of the entire row of pushing mechanisms. After the empty seedling tray is pushed away from the temporary placement space by the horizontal pushing mechanism, the seedling tray slides along the slide plate onto the placement platform.

[0017] Furthermore, a rack is fixed on the separation frame, a motor is installed on the support plate, and a gear meshing with the rack is fixed on the output shaft of the motor.

[0018] Beneficial effects: The seedling taking and throwing device of the fully automatic transplanter of the present invention has the following beneficial effects:

[0019] (1) The components of the seedling separation device were redesigned and assembled so that the components were 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 with 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 with each other. Combined with the specific positional relationship between the components, a structure with a front-to-back, left-to-right, and up-and-down balanced layout centered on the ejection mechanism is formed, which increases the compactness of the structure and reduces the overall volume.

[0020] (2) By controlling the coordinated operation of various components, the separation of seedling trays one by one, seedling blocks one row by one, and seedling blocks one by one can be achieved, with clear layers, accurate seedling separation, and high operational reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of the seedling taking and throwing device;

[0022] Figure 2 It is a three-dimensional first side view structural diagram of the seedling taking and throwing device;

[0023] Figure 3 It is a three-dimensional second side view structural diagram of the seedling taking and throwing device;

[0024] Figure 4 This is a combined structural diagram of the seedling rack and the seedling tray;

[0025] Figure 5 It is the structural diagram of the jacking mechanism;

[0026] Figure 6 It is a structural diagram of the single seedling separation mechanism;

[0027] Figure 7 This is the bottom structure diagram of the single seedling separation mechanism;

[0028] Figure 8 This is a structural diagram of the guide seat;

[0029] Fig. 9 It is a structural diagram of the seedling taking and throwing device in the preferred embodiment.

[0030] In the figure: a-seedling block; 1-frame; 11-placing platform; 2-lifting mechanism; 21-power mechanism; 22-driving screw; 23-screw nut; 24-support plate; 3-whole row pushing mechanism; 31-second electric cylinder; 32-pushing seat; 33-pushing 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 plate; 7-transverse pushing mechanism; 71-first electric cylinder; 72-pushing plate; 8-single seedling separation mechanism; 81-separation frame; 81a-accommodating hole; 82-support plate; 82a-seedling leakage hole; 83-rack; 84-motor; 85-gear; 9-guide seat; 91-partitioning plate; 92-hollow give way hole; 93-inclined part; 94-slide plate part. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 3 The seedling taking and throwing device of the fully automatic transplanter shown includes a frame 1, which is equipped with a lifting mechanism 2 capable of lifting the stacked seedling trays 4, and also includes a whole-row pushing mechanism 3; the seedling trays 4 are provided with a plurality of seedling holes 41 arranged in a square array, the seedling holes 41 are a structure that is through-connected from top to bottom, and the seedling blocks a can be cultivated in the seedling holes 41.

[0033] The frame 1 is also equipped with an ejection mechanism 5 located below the entire row of pushing mechanisms 3, and the ejection mechanism 5 can switch between a retracted state and a lifting state. When the ejection mechanism 5 is in the retracted state, there is a temporary placement space for a single seedling tray 4 to enter between the entire row of pushing mechanisms 3 and the ejection mechanism 5; the lifting mechanism 2 is located on the side of the ejection mechanism 5; the lifting mechanism 2 is equipped with a shelf 6, and the shelf 6 has a plurality of vertically arranged layer plates 61 for placing the seedling trays 4, and the layer plates 61 can prevent the seedling blocks a from falling from the seedling raising holes 41, and there is a gap between adjacent seedling trays 4 placed on the shelf 6.

[0034] The frame 1 is also provided with a transverse pushing mechanism 7 , which can push the seedling tray 4 away from the shelf 6 , so that the seedling tray 4 moves between the entire row pushing mechanism 3 and the ejecting mechanism 5 .

[0035] The frame 1 is also equipped with a single seedling separation mechanism 8 located in front of the entire row pushing mechanism 3, and the single seedling separation mechanism 8 includes a separation frame 81 and a support plate 82. The separation frame 81 has a plurality of accommodating holes 81a arranged equidistantly and penetrating up and down, and the support plate 82 has a seedling leakage hole 82a. The separation frame 81 can be translated laterally to align the different accommodating holes 81a with the seedling leakage holes 82a up and down.

[0036] In the present invention, the components of the seedling separation device are redesigned and assembled, so that the components are reasonably arranged in the three-axis directions of X, Y and Z 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 with each other, the whole row pushing mechanism 3 runs along the Y-axis, the ejection mechanism 5 and the lifting mechanism 2 run along the Z-axis and are staggered with each other. Combined with the specific positional relationship between the various components, a structure with a front-to-back, left-to-right, and up-and-down balanced layout centered on the ejection mechanism 5 is formed, which increases the compactness of the structure and reduces the overall volume.

[0037] By controlling the coordinated operation of various components, it is possible to separate seedling trays one by one, seedling blocks row by row, and seedling blocks one by one with clear layers, accurate seedling separation, and high operational reliability.

[0038] Preferably, the frame 1 is provided with a placement platform 11 for placing the empty seedling tray 4, and the placement platform 11 and the lifting mechanism 2 are respectively located on both sides of the whole row pushing mechanism 3. When the seedling blocks a in the seedling tray 4 are completely taken out, the empty seedling tray 4 is further pushed horizontally to the placement platform 11 by the horizontal pushing mechanism 7. In this way, the empty seedling tray 4 can be easily recycled and managed.

[0039] Preferably, the lifting mechanism 2 includes a power mechanism 21, a driving screw 22, a screw nut 23 and a support plate 24; the power mechanism 21 and the driving screw 22 are drivingly connected, the screw nut 23 is fixed on the support plate 24, and the screw nut 23 and the driving screw 22 form a screw pair; the support plate 24 can drive the shelf 6 to rise and fall as a whole. By operating the driving screw 22, the seedling trays 4 on each layer of the layer plate 61 can be accurately placed at the same height as the horizontal pushing mechanism 7, and the horizontal pushing mechanism 7 can separate the seedling trays 4 on each layer one by one.

[0040] Preferably, the horizontal pushing mechanism 7 comprises a first electric cylinder 71 and a push plate 72 mounted on a telescopic rod of the first electric cylinder 71. When in use, the first electric cylinder 71 first moves the push plate 72 horizontally by a first distance to move the seedling tray 4 to a temporary placement space between the entire row pushing mechanism 3 and the ejection mechanism 5. When the seedlings in the seedling tray 4 are taken out, the telescopic rod of the first electric cylinder 71 extends a second distance to push the empty seedling tray 4 to the placement platform 11 located on the other side of the entire row pushing mechanism 3.

[0041] Preferably, the ejection mechanism 5 comprises a lifting cylinder 51, a lifting plate 52 and a lifting block 53, wherein the lifting cylinder 51 can drive the lifting plate 52 to move up and down, and a plurality of the lifting blocks 53 are installed in a square array on the lifting plate 52. The number and layout of the lifting blocks 53 and the seedling holes 41 on the seedling tray 4 are consistent, so that when the lifting plate 52 rises under the action of the lifting cylinder 51, each lifting block 53 corresponds to the seedling hole 41 one by one, and the seedling blocks a in all the seedling holes 41 are ejected at the same time.

[0042] Preferably, the seedling separating device also includes a guide seat 9 fixed relative to the frame 1, and the guide seat 9 has a plurality of partition plates 91, guide grooves are formed between adjacent partition plates 91, and 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.

[0043] Preferably, the entire row pushing mechanism 3 includes a second electric cylinder 31, a pushing seat 32 and a pushing 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 pushing plates 33 as the guide grooves, and each pushing plate 33 is connected to the pushing seat 32 through a connecting rod 34.

[0044] Preferably, the guide seat 9 has an inclined portion 93, the whole 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. 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.

[0045] In addition, one side of the guide seat 9 has an inclined slide portion 94, and the slide portion 94 and the placement platform 11 are located on the same side of the entire row of pushing mechanisms 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 along the slide portion 94 to the placement platform 11.

[0046] Preferably, a rack 83 is fixed on the separation frame 81 , a motor 84 is installed on the support plate 82 , and a gear 85 meshing with the rack 83 is fixed on the output shaft of the motor 84 .

[0047] The seedling separation method based on the above-mentioned seedling separation device is as follows:

[0048] In the initial state, the ejection mechanism 5 is in a retracted state. The power mechanism 21 of the lifting mechanism 2 operates the driving screw 22, so that the shelf 6 is lifted and lowered, so that the seedling trays 4 of each layer are at the same height as the horizontal pushing mechanism 7; the horizontal pushing mechanism 7 pushes the seedling trays 4 at the same height to the temporary placement space between the entire row of pushing mechanisms 3 and the ejection mechanism 5; then, the lifting cylinder 51 of the ejection mechanism 5 raises the lifting plate 52, and all the lifting blocks 53 on the lifting plate 52 enter the corresponding seedling raising holes 41 respectively, and all the seedling blocks a in the seedling tray 4 are ejected at the same time, and the ejected seedling blocks a pass through the hollow clearance holes 92 and are separated into multiple columns by the partition plate 91. Subsequently, the telescopic rods of the second electric cylinders 31 of the entire row of pushing mechanisms 3 extend a preset distance, and each push plate 33 causes the frontmost seedling block a of the corresponding row of seedling blocks a to slide down the corresponding guide groove and enter each receiving hole 81a of the separation rack 81. The seedling blocks a in the receiving holes 81a aligned with the seedling leakage holes 82a in the separation rack 81 fall and are caught by the duckbill mechanism for transplanting. The operation of the motor 84 can make the separation rack 81 translate horizontally so that the seedling blocks a in different receiving holes 81a fall from the seedling leakage holes 82a. When the seedling blocks a in the separation rack 81 have all fallen, the second electric cylinder 31 continues to push the push plate 33 to push the preset distance, and push the seedling blocks a in the next row into the separation rack 81, and so on, until all the seedling blocks a in all the guide grooves are used up.

[0049] 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 sideways, so that the seedling tray 4 slides along the slide plate 94 to the placement platform 11. Then the telescopic rod of the first electric cylinder 71 is retracted, and the lifting mechanism 2 moves the shelf 6 by a step distance, so that the next seedling tray 4 is at the same height as the horizontal pushing mechanism 7, and the horizontal pushing mechanism 7 continues the horizontal pushing operation of the seedling tray 4, and so on, the seedling separation mechanism operates continuously to realize continuous seedling supply.

[0050] Preferably, if Fig. 9As shown, both upper and lower sides of the horizontal pushing mechanism 7 are provided with a seedling pushing mechanism 10, and each seedling pushing mechanism 11 is provided with a corresponding seedling conveying groove 20. The seedling tray 4 can move along the seedling conveying groove 20 under manual action. In other embodiments, a conveyor belt can be provided 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, and the pushing direction of the seedling pushing mechanism 10 is parallel to the pushing direction of the horizontal pushing mechanism 7. When in use, when the shelf 6 moves upward, the shelf 6 rises by one step (one step is equal to the distance between two adjacent layers 61), that is, an empty layer 61 is aligned with the seedling pushing mechanism 10 on it, and the seedling pushing mechanism 10 on it pushes a new seedling tray 4 into the empty layer 61, and at the same time, the horizontal pushing mechanism 7 pushes the seedling tray 4 on the layer 61 aligned with it to the temporary placement space. In this way, as the shelf 6 continues to rise, the layer plate 61 that has just been emptied is fully replenished with the seedling tray 4, and when the shelf 6 rises to the highest position, the shelf 6 is driven to descend and the next round of seedling tray horizontal pushing operation can be carried out. When the shelf 6 moves downward, every time the shelf 6 descends by one step, an empty layer plate 61 is aligned with the seedling replenishment pushing mechanism 10 below, and the seedling replenishment pushing mechanism 10 below pushes a new seedling tray 4 into the empty layer plate 61, and at the same time, the horizontal pushing mechanism 7 pushes the seedling tray 4 on the layer plate 61 aligned with it to the temporary placement space. In this way, as the shelf 6 continues to descend, the layer plate 61 that has just been emptied is fully replenished with the seedling tray 4, and when the shelf 6 descends to the lowest position, the shelf 6 is driven to rise and the next round of seedling tray horizontal pushing operation can be carried out. By analogy, the operation of pushing the seedling tray 4 to the temporary placement space can be realized uninterruptedly, and the seedling supply can be realized uninterruptedly.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A seedling taking and throwing device for a fully automatic transplanter, comprising a frame (1), the frame (1) being equipped with a lifting mechanism (2) capable of lifting stacked seedling trays (4), and further comprising a whole-row pushing mechanism (3) and a horizontal pushing mechanism (7); Features: The frame (1) is also provided with an ejection mechanism (5) located below the entire row pushing mechanism (3); the lifting mechanism (2) is located on the side of the ejection mechanism (5); the lifting mechanism (2) is provided with a shelf (6), and the shelf (6) has a plurality of vertically arranged layers (61) for placing the seedling tray (4); the horizontal pushing mechanism (7) is capable of pushing the seedling tray (4) away from the shelf (6); The frame (1) is also provided with a single seedling separation mechanism (8) located in front of the whole row pushing mechanism (3), the single seedling separation mechanism (8) comprising a separation frame (81) and a support plate (82), the separation frame (81) having a plurality of accommodating holes (81a) arranged at equal intervals and extending vertically, the support plate (82) having a seedling leakage hole (82a), and the separation frame (81) can be laterally translated so that different accommodating holes (81a) are aligned vertically with the seedling leakage hole (82a).

2. The seedling taking and throwing device of the fully automatic transplanter according to claim 1 is characterized in that: The frame (1) is provided with a placement platform (11) for placing the empty seedling trays (4); the placement platform (11) and the lifting mechanism (2) are respectively located on both sides of the entire row pushing mechanism (3).

3. The seedling taking and throwing device of the fully automatic transplanter according to claim 1 is characterized in that: The lifting mechanism (2) comprises a power mechanism (21), a driving lead screw (22), a lead screw nut (23) and a support plate (24); the power mechanism (21) and the driving lead screw (22) are drivingly connected, the lead screw nut (23) is fixed on the support plate (24), and the lead screw nut (23) and the driving lead screw (22) form a lead screw pair; the support plate (24) can drive the shelf (6) to rise and fall as a whole.

4. The seedling taking and throwing device of the fully automatic transplanter according to claim 1 is characterized in that: The horizontal pushing mechanism (7) comprises a first electric cylinder (71) and a pushing plate (72) mounted on a telescopic rod of the first electric cylinder (71).

5. The seedling taking and throwing device of the fully automatic transplanter according to claim 1 is characterized in that: The ejection mechanism (5) comprises a lifting cylinder (51), a lifting plate (52) and a lifting block (53); the lifting cylinder (51) can drive the lifting plate (52) to move up and down; a plurality of the lifting blocks (53) are installed on the lifting plate (52) in a square array.

6. The seedling taking and throwing device of the fully automatic transplanter according to claim 1 is characterized in that: The seedling separation device further comprises a guide seat (9) fixed relative to the frame (1), the guide seat (9) having a plurality of partition plates (91), guide grooves being formed between adjacent partition plates (91), and a hollow clearance hole (92) being provided at a position of the guide seat (9) located above the ejection mechanism (5).

7. The seedling taking and throwing device of the fully automatic transplanter according to claim 6 is characterized in that: The whole-row pushing mechanism (3) comprises a second electric cylinder (31), a pushing seat (32) and a pushing plate (33); the cylinder seat of the second electric cylinder (31) is fixed on the guide seat (9), a telescopic rod is connected to the pushing seat (32), and the pushing seat (32) is connected with the pushing plates (33) of the same number as the guide grooves, and each of the pushing plates (33) is connected to the pushing seat (32) via a connecting rod (34).

8. The seedling taking and throwing device of the fully automatic transplanter according to claim 6 is characterized in that: The guide seat (9) has an inclined portion (93), the whole-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).

9. The seedling taking and throwing device of the fully automatic transplanter according to claim 6, characterized in that: A rack (83) is fixed on the separation frame (81), a motor (84) is installed on the support plate (82), and a gear (85) meshing with the rack (83) is fixed on the output shaft of the motor (84).

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