A device for picking and transporting pot seedlings

Abstract

The present invention discloses a device for picking and transporting pot seedlings, which includes a frame. At least one picking and transporting seedling unit is installed on the frame. The picking and transporting seedling unit includes a seedling tray conveying assembly, a seedling emergence assembly, and a seedling transporting assembly. The seedling tray conveying assembly is used for conveying the seedling tray and enabling multiple rows of pot seedlings on the seedling tray to move to a preset seedling picking position row by row in sequence. The seedling transporting assembly is used for picking out a row of pot seedlings located at the preset seedling picking position and transporting them to the seedling emergence assembly. The seedling transporting assembly includes a seedling transporting frame and a plurality of seedling picking clamps. The seedling transporting frame is installed on the frame through a moving mechanism and can be driven by the moving mechanism to make the seedling picking clamps move between the preset seedling picking position and the seedling emergence assembly and perform lifting movement. The plurality of seedling picking clamps are arranged in a row in a manner that the spacing can be adjusted and are sequentially arranged on the seedling transporting frame. The seedling transporting assembly further includes a spacing adjusting mechanism for adjusting the spacing between the plurality of seedling picking clamps. The present invention has the advantages of wide application range, high working efficiency, simple and compact structure, low cost, high working reliability, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of transplanting machinery, and particularly relates to a device for picking and transporting pot seedlings. Background Art

[0002] Pot seedling transplanting has high survival rate of transplanted seedlings and short green-recovery time because the roots of the seedlings carry nutrient soil, and it is the main transplanting method for vegetables such as tobacco leaves, peppers, and tomatoes. With the rise of agricultural cooperatives and large grain growers, pot seedling transplanting has certain advantages in improving the utilization of idle fields and increasing the multiple cropping index, and the transplanting rate of pot seedlings of field crops such as rapeseed and corn is increasing year by year. However, compared with bare-root seedling transplanting, the speed of pot seedling transplanting is slow. Taking rapeseed transplanting as an example, the high-speed transplanting speed of rapeseed bare-root seedlings has exceeded 200 plants / min / row, while the transplanting speed of pot seedlings in the ordinary way is all within 90 plants / min / row, and in the extreme case, it can reach about 120 plants / min / row. The efficiency of pot seedling transplanting is much lower than that of rapeseed bare-root seedling transplanters. At present, the transplanting mechanisms supporting pot seedling transplanting mainly include circulating cup-type transplanting devices, guide-seedling tube-type transplanting devices, flexible disk-type transplanting devices, chain clip-type transplanting devices, and horizontal seedling-pushing-type transplanting devices. Although these transplanting devices have the ability of high-speed transplanting, due to the lack of a suitable device for transporting pot seedlings, the transplanting efficiency has been difficult to improve. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies existing in the prior art and provide a device for picking and transporting pot seedlings with a wide application range, high working efficiency, simple and compact structure, low cost, and high working reliability.

[0004] To solve the above technical problem, the present invention adopts the following technical solutions:

[0005] A device for picking and transporting pot seedlings includes a frame. At least one picking and transporting seedling unit is installed on the frame. The picking and transporting seedling unit includes a seedling tray conveying component, a seedling emergence component for conveying the seedling tray and enabling multiple rows of pot seedlings on the seedling tray to move to a preset seedling picking position row by row in sequence, and a seedling transporting component for picking out a row of pot seedlings at the preset seedling picking position and transporting them to the seedling emergence component. The seedling transporting component includes a seedling transporting frame and a plurality of seedling picking clips. The seedling transporting frame is installed on the frame through a moving mechanism and can be driven by the moving mechanism to make the seedling picking clips move between the preset seedling picking position and the seedling emergence component and move up and down. The plurality of seedling picking clips are arranged in a row in a manner that the spacing can be adjusted and are sequentially arranged on the seedling transporting frame. The seedling transporting component further includes a spacing adjusting mechanism for adjusting the spacing between the plurality of seedling picking clips.

[0006] As a further improvement of the above technical solution:

[0007] Among the multiple seedling picking clips arranged in a row, the seedling picking clips at both ends are the first clip and the second clip respectively. The first clip is fixedly arranged on the seedling conveying rack, and the remaining seedling picking clips are slidably installed on the seedling conveying rack. The spacing adjusting mechanism includes a telescopic driving member installed on the seedling conveying rack. The driving end of the telescopic driving member is connected to the second clip and can drive the second clip to move closer to and away from the first clip. A flexible connecting member for limiting the maximum spacing between any two adjacent seedling picking clips is connected between any two adjacent seedling picking clips. When the multiple seedling picking clips are arranged closely in sequence, the number is the same as that of the pot seedlings in a single row of pot seedlings and corresponds one by one. And when the seedling conveying rack is at the preset seedling picking position, each seedling picking clip is located directly above the corresponding pot seedling.

[0008] The seedling emergence assembly includes a seedling dropping box. The seedling dropping box has a plurality of seedling dropping channels that are the same in number as and correspond one by one to the seedling picking clips. The plurality of seedling dropping channels are arranged at intervals in sequence, and the spacing between two adjacent seedling dropping channels is greater than the spacing between two adjacent pot seedlings in the same row of pot seedlings.

[0009] A seedling dropping control mechanism is arranged in the seedling dropping channel and can hold and support the pot seedling in the seedling dropping channel and release the holding effect on the pot seedling so that the pot seedling drops from the seedling dropping channel.

[0010] The moving mechanism includes a translation rack and a lifting rack. The translation rack is slidably arranged on the machine frame in the horizontal direction and is connected with a horizontal driving member for driving the translation rack to slide horizontally back and forth. The lifting rack is installed on the translation rack in a manner that can move up and down through a lifting driving member. The seedling conveying rack is installed on the lifting rack. The pot seedling picking and conveying device is provided with two picking and conveying units. The two picking and conveying units share one seedling emergence assembly. The seedling conveying racks of the two picking and conveying units are respectively installed on the same translation rack through lifting driving members. And when the translation rack drives the seedling picking clip of any one picking and conveying unit to move to the preset seedling picking position, the seedling picking clip of the other picking and conveying unit is located at the position of the seedling emergence assembly.

[0011] The seedling tray feeding assembly includes a supporting plate. The two ends of the supporting plate are respectively a feeding end and a discharging end. The preset seedling picking position is located at a position close to the discharging end. Guide grooves for inserting the two side edges of the seedling tray to guide the seedling tray to move from the feeding end to the discharging end and a seedling tray driving mechanism for driving the seedling tray to move from the feeding end to the discharging end and enabling the multi-row pot seedlings of the seedling tray to move to the preset seedling picking position row by row in sequence are arranged on both sides of the supporting plate.

[0012] Both side edges of the seedling tray are provided with a plurality of through holes arranged at intervals in sequence. The distance between two adjacent through holes is equal to the distance between two adjacent rows of pot seedlings. The seedling tray driving mechanism includes a pushing member and a seedling tray driving member whose driving end reciprocates in the direction from the seedling tray inlet end to the outlet end. The pushing member is installed at the driving end of the seedling tray driving member in a manner that can swing freely up and down. When the pushing member swings downward, it can insert into the through hole, and when the pushing member swings upward, it withdraws from the through hole. The guiding groove has a supporting surface for supporting the pushing member to keep the pushing member inserted into the through hole. The pushing member has an inclined surface that cooperates with the hole wall of the through hole when the pushing member moves in the direction from the outlet end to the inlet end of the seedling tray to push the pushing member to swing upward and withdraw from the through hole.

[0013] The width of the guiding groove is greater than the thickness of the edge of the seedling tray. The inner wall of the guiding groove is provided with a convex platform portion that reduces the width of the guiding groove. The convex platform portion extends from the preset seedling taking position towards the inlet end of the supporting plate, and both ends of the convex platform portion along its extending direction have a transition surface that smoothly connects the convex surface of the convex platform portion and the inner wall of the guiding groove.

[0014] The seedling tray assembly is further provided with a seedling pushing mechanism for pushing up a row of pot seedlings at the preset seedling taking position. The seedling pushing mechanism includes a seedling pushing driving member and a plurality of seedling pushing rods that are consistent with the number of single-row pot seedlings and correspond one by one. The seedling pushing driving member is connected to each seedling pushing rod and can drive the seedling pushing rod to move upward and extend into the seedling tray to push up the corresponding pot seedling and drive the seedling pushing rod to move downward and withdraw from the seedling tray.

[0015] The guiding groove includes an upper section located above the supporting plate, a lower section located above the supporting plate, and an intermediate arc section connecting the upper section and the lower section. One end of the lower section far from the intermediate arc section serves as the outlet end of the seedling tray and is located below the inlet end of the supporting plate.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] In the pot seedling picking and conveying device of the present invention, the distance between multiple picking clips of the seedling conveying assembly can be adjusted, and it can pick out a whole row of single-row pot seedlings with a relatively small distance between the pot seedlings in the seedling tray, and then send the whole row into the seedling outlet assembly after increasing the distance between the pot seedlings, which can meet the picking and conveying requirements of different distances between the pot seedlings in the seedling tray and the required seedling outlet distance of the seedling outlet assembly. It is flexible in use and has a wide application range. Moreover, the seedling conveying assembly directly adjusts the distance between the pot seedlings while picking up, placing, and conveying the pot seedlings, without the need for other transfer equipment, with high working efficiency, simple and compact structure, low cost, and high working reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the pot seedling picking and conveying device.

[0019] Figure 2It is a schematic three-dimensional structure diagram of the seedling conveying component.

[0020] Figure 3 It is Figure 2 an enlarged structure diagram at position A in

[0021] Figure 4 a partial sectional structure diagram of the seedling conveying component in the first seedling conveying state.

[0022] Figure 5 a partial sectional structure diagram of the seedling conveying component in the second seedling conveying state.

[0023] Figure 6 a partial sectional structure diagram of the seedling conveying component in the third seedling conveying state.

[0024] Figure 7 a partial sectional structure diagram of the seedling conveying component in the fourth seedling conveying state.

[0025] Figure 8 It is a schematic three-dimensional structure diagram of the tray conveying component.

[0026] Figure 9 It is Figure 8 an enlarged structure diagram at position B in

[0027] Figure 10 a partial sectional structure diagram of the tray driving mechanism in the first position state.

[0028] Figure 11 a partial sectional structure diagram of the tray driving mechanism in the second position state.

[0029] Figure 12 a partial sectional structure diagram of the tray driving mechanism in the third position state.

[0030] Figure 13 a partial sectional structure diagram of the tray driving mechanism in the fourth position state.

[0031] Figure 14 a partial sectional structure diagram of the seedling pushing mechanism when the seedling pushing rod extends into the seedling tray to push out the pot seedlings.

[0032] Figure 15 a partial sectional structure diagram of the seedling pushing mechanism when the seedling pushing rod withdraws from the seedling tray.

[0033] Figure 16 It is a schematic three-dimensional structure diagram of the seedling emergence component.

[0034] Legend:

[0035] 1. Frame; 2. Seed tray feeding assembly; 21. Supporting plate; 22. Guide groove; 221. Supporting surface; 222. Boss part; 223. Transition surface; 224. Upper section; 225. Lower section; 226. Intermediate arc section; 23. Pushing member; 231. Inclined surface; 24. Seed tray driving member; 25. Seedling pushing driving member; 26. Seedling pushing rod; 3. Seedling emergence assembly; 31. Seedling dropping box; 32. Seedling dropping channel; 4. Seedling conveying assembly; 41. Seedling conveying frame; 42. Seedling picking clamp; 43. Telescopic driving member; 44. Flexible connecting member; 45. Translational frame; 46. Lifting frame; 100. Seedling tray; 101. Edge; 102. Through hole; 200. Plug seedlings. Detailed implementation manners

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] As Figures 1 to 16 shown, the plug seedling picking and conveying device of this embodiment includes a frame 1. At least one picking and conveying unit is installed on the frame 1. The picking and conveying unit includes a seed tray feeding assembly 2, a seedling emergence assembly 3 for conveying the seedling tray 100 and enabling multiple rows of plug seedlings 200 in the seedling tray 100 to move to a preset seedling picking position row by row in sequence, and a seedling conveying assembly 4 for picking out a row of plug seedlings 200 at the preset seedling picking position and conveying them to the seedling emergence assembly 3. The seedling conveying assembly 4 includes a seedling conveying frame 41 and a plurality of seedling picking clamps 42. The seedling conveying frame 41 is installed on the frame 1 through a moving mechanism and can be driven by the moving mechanism to make the seedling picking clamps 42 move between the preset seedling picking position and the seedling emergence assembly 3 and perform lifting movement. The plurality of seedling picking clamps 42 are arranged in a row in a manner that the spacing can be adjusted and are sequentially arranged on the seedling conveying frame 41. The seedling conveying assembly 4 further includes a spacing adjusting mechanism for adjusting the spacing between the plurality of seedling picking clamps 42. By driving the seedling picking clamps 42 to move between the preset seedling picking position and the seedling emergence assembly 3 and perform lifting movement through the moving mechanism, the seedling picking clamps 42 can cooperate to pick out a row of plug seedlings 200 at the preset seedling picking position and send them to the seedling emergence assembly 3 for seedling emergence. By adjusting the spacing between the plurality of seedling picking clamps 42 through the spacing adjusting mechanism, it is possible to pick seedlings from the seedling tray 100 with different spacings between the plug seedlings 200, and it is also possible to increase or decrease the spacing between the plug seedlings 200 after picking a row of plug seedlings 200 in the seedling tray 100 and then send them to the seedling emergence assembly 3.

[0038] In the pot seedling picking and conveying device, the distance between multiple seedling picking clips 42 of the seedling conveying assembly 4 can be adjusted, and it can pick up the single-row pot seedlings 200 with a relatively small distance between the pot seedlings 200 in the seedling tray 100 row by row, and then send them row by row into the seedling emergence assembly 3 after increasing the distance between the pot seedlings 200, which can meet the picking and conveying requirements of the pot seedlings 200 in the seedling tray 100 with different distances from the required seedling emergence distance of the seedling emergence assembly 3. It is flexible to use and has a wide application range. Moreover, the seedling conveying assembly 4 directly adjusts the distance between the pot seedlings 200 while picking up, placing and conveying the pot seedlings 200, without the need for other transfer devices, with high working efficiency, simple and compact structure, low cost and high working reliability.

[0039] In this embodiment, as Figure 2 and Figure 3 shown, among the multiple seedling picking clips 42 arranged in a row, the seedling picking clips 42 at both ends are respectively the first clip and the second clip. The first clip is fixedly arranged on the seedling conveying frame 41, and the remaining seedling picking clips 42 are slidably installed on the seedling conveying frame 41. The distance adjusting mechanism includes a telescopic driving member 43 installed on the seedling conveying frame 41. The driving end of the telescopic driving member 43 is connected to the second clip and can drive the second clip to move closer to and away from the first clip. A flexible connecting member 44 for restricting the maximum distance between any two adjacent seedling picking clips 42 is connected between any two adjacent seedling picking clips 42. When the multiple seedling picking clips 42 are arranged closely in sequence, the number is the same as that of the pot seedlings 200 in the single-row pot seedlings 200 and they correspond one by one, and when the seedling conveying frame 41 is at the preset seedling picking position, each seedling picking clip 42 is located directly above the corresponding pot seedling 200. During operation, the telescopic driving member 43 drives the second clip to move closer to the first clip, so that the multiple seedling picking clips 42 are arranged closely in sequence (see the first seedling conveying state shown in Figure 4 ). After the seedling picking clip 42 moves to the preset seedling picking position, each seedling picking clip 42 is exactly located directly above the corresponding pot seedling 200. By lifting and lowering the seedling picking clip 42 and controlling the opening and closing movement of the seedling picking clip 42, the pot seedlings 200 in the seedling tray 100 can be picked up (see the second seedling conveying state shown in Figure 5 ). After picking up the pot seedlings 200 in the seedling tray 100, lift the seedling picking clip 42 and make the seedling picking clip 42 move towards the seedling emergence assembly 3. At the same time, the telescopic driving member 43 drives the second clip to move away from the first clip (see the third seedling conveying state shown in Figure 6 ), so that the distance between each seedling picking clip 42 reaches the maximum distance restricted by the flexible connecting member 44. At this time, the distance between each seedling picking clip 42 is the same as the required seedling emergence distance of the seedling emergence assembly 3. After the seedling picking clip 42 moves above the seedling emergence assembly 3, by lifting and lowering the seedling picking clip 42 and controlling the opening and closing movement of the seedling picking clip 42, the pot seedlings 200 can be put into the seedling emergence assembly 3 (see Figure 7The fourth seedling output state shown). The combination of the assembly structure form of the seedling picking clip 42 and the spacing adjustment mechanism has the advantages of simple and compact structure, low cost, easy manufacturing and assembly, simple control, and stable and reliable operation. Preferably, the telescopic driving member 43 is a cylinder, an oil cylinder, an electric push rod, etc., the flexible connecting member 44 is a flexible rope such as a nylon line, and the seedling picking clip 42 adopts the prior art, for example, two finger forms driven by a cylinder to open and close. Further preferably, a flexible clamping block for clamping seedlings is installed on the fingers to avoid damage to the seedlings caused by rigid contact with the seedlings. Each seedling picking clip 42 is slidably arranged on the same guide rail provided on the seedling conveying frame 41 to reduce costs, improve the structural compactness, and improve the action consistency of the seedling picking clip 42.

[0040] In this embodiment, as Figure 16 shown, the seedling emergence assembly 3 includes a seedling dropping box 31. The seedling dropping box 31 has a plurality of seedling dropping channels 32 that are consistent with the number of the seedling picking clips 42 and correspond one by one. The plurality of seedling dropping channels 32 are arranged at intervals in sequence, and the spacing between two adjacent seedling dropping channels 32 is greater than the spacing between two adjacent pot seedlings 200 in the same row of pot seedlings 200. The seedling emergence assembly 3 can separately receive and output each pot seedling 200 in a row of pot seedlings 200, and at the same time increase the spacing between adjacent pot seedlings 200 to meet the requirement that the emergence spacing is greater than the spacing between the pot seedlings 200 in the seedling tray 100. In other embodiments, the seedling emergence assembly 3 can also adopt other prior arts as long as it can receive each pot seedling 200 in a row of pot seedlings 200. The spacing between two adjacent seedling dropping channels 32 can be adjusted according to actual needs. In this embodiment, a seedling dropping control mechanism is provided in the seedling dropping channel 32, which can hold the pot seedling 200 in the seedling dropping channel 32 and release the holding effect on the pot seedling 200 to make the pot seedling 200 drop from the seedling dropping channel 32. It is convenient to control the pot seedling 200 in the seedling dropping channel 32 to drop from the seedling dropping channel 32. The seedling dropping control mechanism can be set with reference to the prior art as long as it can block the pot seedling 200 from dropping from the seedling dropping channel 32 and release the blocking effect on the pot seedling 200 through control.

[0041] In this embodiment, as Figure 1 and Figure 2As shown in the figure, the moving mechanism includes a translation frame 45 and a lifting frame 46. The translation frame 45 is slidably arranged on the machine frame 1 in the horizontal direction and is connected with a horizontal driving member for driving the horizontal reciprocating sliding of the translation frame 45. The lifting frame 46 is installed on the translation frame 45 in a manner that can move up and down through a lifting driving member. The seedling conveying frame 41 is installed on the lifting frame 46. The pot seedling picking and conveying device is provided with two symmetrically arranged picking and conveying units. The two picking and conveying units share one seedling emergence assembly 3. The seedling conveying frames 41 of the two picking and conveying units are respectively installed on the same translation frame 45 through lifting driving members. When the translation frame 45 drives the seedling picking clamp 42 of any one picking and conveying unit to move to the preset seedling picking position, the seedling picking clamp 42 of the other picking and conveying unit is located at the position of the seedling emergence assembly 3. This kind of moving mechanism has the advantages of simple structure, stable and reliable operation, and convenient control. At the same time, since the two picking and conveying units share one seedling emergence assembly 3 and the seedling conveying frames 41 of the two picking and conveying units are installed on the same translation frame 45, when the translation frame 45 drives the seedling picking clamp 42 of any one picking and conveying unit to move to the preset seedling picking position, the seedling picking clamp 42 of the other picking and conveying unit is located at the position of the seedling emergence assembly 3. This configuration enables the other picking and conveying unit to emerge seedlings at the position of the seedling emergence assembly 3 when any one picking and conveying unit picks seedlings at the preset seedling picking position, realizing the alternate reciprocating work of the two seedling tray feeding assemblies 2 to supply the pot seedlings 200 to the same seedling emergence assembly 3, which can greatly improve the work efficiency. At the same time, only one set of translation frame 45 and horizontal driving member need to be set, that is, the coordinated and non-interfering picking and conveying work of the two picking and conveying units can be realized, which can save the equipment manufacturing and operation costs.

[0042] In this embodiment, as Figure 1 、 Figures 8 to 13 shown, the seedling tray feeding assembly 2 includes a supporting plate 21. The two ends of the supporting plate 21 are respectively an inlet end and an outlet end of the seedling tray. The preset seedling picking position is located at a position close to the outlet end. Guide grooves 22 for inserting the two side edges 101 of the seedling tray 100 to guide the movement of the seedling tray 100 from the inlet end to the outlet end, and a seedling tray driving mechanism for driving the seedling tray 100 to move from the inlet end to the outlet end and enabling the multi-row pot seedlings 200 of the seedling tray 100 to move to the preset seedling picking position in a row-by-row manner are arranged on both sides of the supporting plate 21. The seedling tray feeding assembly 2 uses the supporting plate 21 to support the seedling tray 100. The guide grooves 22 cooperate with the two side edges 101 of the seedling guiding tray 100 to guide the movement of the seedling tray 100. The seedling tray driving mechanism drives the seedling tray 100 to move, enabling the multi-row pot seedlings 200 of the seedling tray 100 to move to the preset seedling picking position in a row-by-row manner, which can stably and reliably enable the multi-row pot seedlings 200 of the seedling tray 100 to move to the preset seedling picking position in a row-by-row manner, so that the seedling conveying assembly 4 can pick out each row of pot seedlings 200, and the stability of conveying the seedling tray 100 is good.

[0043] In this embodiment, a plurality of through holes 102 are provided at both side edges 101 of the seedling tray 100, which are arranged at intervals in sequence. The distance between two adjacent through holes 102 is equal to the distance between two adjacent rows of pot seedlings 200. The tray feeding drive mechanism includes a pushing member 23 and a tray feeding drive member 24 whose driving end reciprocates in the direction from the feeding end to the discharging end. The pushing member 23 is installed at the driving end of the tray feeding drive member 24 in a manner that can swing freely up and down. When the pushing member 23 swings downward, it can be inserted into the through hole 102, and when the pushing member 23 swings upward, it withdraws from the through hole 102. The guiding groove 22 has a supporting surface 221 for supporting the pushing member 23 to keep the pushing member 23 inserted into the through hole 102. The pushing member 23 has an inclined surface 231 that cooperates with the hole wall of the through hole 102 to force the pushing member 23 to swing upward and withdraw from the through hole 102 when the pushing member 23 moves in the direction from the discharging end to the feeding end. The above-mentioned tray feeding drive member 24 adopts a cylinder, an oil cylinder or an electric push rod, etc. During operation, the tray feeding drive member 24 drives the pushing member 23 to move to a position of a through hole 102 on the edge 101. At this time, the pushing member 23 that can swing freely up and down automatically inserts into the through hole 102 under the action of gravity and is supported on the supporting surface 221 to maintain the state of being inserted into the through hole 102 (see the first position state shown in Figure 10 ). Then the tray feeding drive member 24 drives the pushing member 23 to move in the direction of the discharging end (see the second position state shown in Figure 11 ) until a row of pot seedlings 200 moves to the preset seedling taking position. The tray feeding drive member 24 drives the pushing member 23 to move in the direction of the feeding end. At this time, the inclined surface 231 of the pushing member 23 cooperates with the hole wall of the through hole 102 to force the pushing member 23 to swing upward and withdraw from the through hole 102, and the pushing member 23 moves along the upper surface of the edge 101 (see the third position state shown in Figure 13 ). Until the pushing member 23 moves to the position of the next through hole 102 on the edge 101, the pushing member 23 that can swing freely up and down automatically inserts into the next through hole 102 under the action of gravity (see the fourth position state shown in Figure 14 ). According to the above process, each row of pot seedlings 200 of the seedling tray 100 can be moved to the preset seedling taking position. This tray feeding drive mechanism only uses the pushing member 23 and the tray feeding drive member 24 that drives the pushing member 23 to reciprocate, and cooperates with the through holes 102 on both side edges 101 of the seedling tray 100, so as to realize that multiple rows of pot seedlings 200 of the seedling tray 100 move to the preset seedling taking position in a row-by-row manner. Its structure is simple and compact, easy to manufacture and assemble, low in cost, easy to control, and stable and reliable in operation.

[0044] In this embodiment, the width of the guiding groove 22 is greater than the thickness of the edge 101 of the seedling tray 100. A boss portion 222 that reduces the width of the guiding groove 22 is provided on the inner wall of the guiding groove 22. The boss portion 222 extends from the preset seedling-taking position towards the feeding end of the supporting plate 21, and both ends of the boss portion 222 in its extending direction have a transition surface 223 that smoothly connects the raised surface of the boss portion 222 and the inner wall of the guiding groove 22. The width of the guiding groove 22 being greater than the thickness of the edge 101 of the seedling tray 100 can reduce the resistance (especially when the guiding groove 22 has an intermediate arc section 226), ensuring the stable and smooth movement of the seedling tray 100. At the same time, a boss portion 222 is provided to reduce the width of the guiding groove 22 near the preset seedling-taking position, ensuring the stable movement of the seedling tray 100 in cooperation with the pushing member 23. And after the last row of pot seedlings 200 in the seedling tray 100 is taken out, it is also convenient for the pushing member 23 to push the end of the edge 101 of the seedling tray 100 to push the seedling tray 100 through the preset seedling-taking position. Preferably, the length of the above-mentioned boss portion 222 is not greater than the distance between two adjacent through holes 102.

[0045] In this embodiment, as Figure 8 , Figure 14 and Figure 15 shown, the seedling feeding assembly 2 is further provided with a seedling pushing mechanism for pushing up a row of pot seedlings 200 located at the preset seedling-taking position. The seedling pushing mechanism includes a seedling pushing driving member 25 and a plurality of seedling pushing rods 26 that are consistent with the number of single-row pot seedlings 200 and correspond one by one. The seedling pushing driving member 25 is connected to each seedling pushing rod 26 and can drive the seedling pushing rod 26 to move upward into the seedling tray 100 to push up the corresponding pot seedling 200 and drive the seedling pushing rod 26 to move downward to withdraw from the seedling tray 100. During the growth and development of the seedlings, due to the growth of the roots and the increase in volume, the volume of the pot body increases, and the interaction force between the pot body and the seedling hole of the seedling tray 100 increases. By setting the seedling pushing mechanism, the pot seedlings 200 can be pushed up by the seedling pushing mechanism before the seedling conveying assembly 4 takes out the pot seedlings 200, so that the pot seedlings 200 are separated from the seedling tray 100, reducing the interaction force between the pot seedlings 200 and the seedling tray 100. Furthermore, the force on the pot seedlings 200 during the process of the seedling conveying assembly 4 taking out the pot seedlings 200 can be reduced, preventing the seedling rod of the pot seedlings 200 from being damaged due to excessive force and the problem that the seedling conveying assembly 4 cannot stably take the seedlings. For example, when the seedling conveying assembly 4 adopts the form of a seedling taking clamp 42, the seedling taking clamp 42 is prone to slipping. The above-mentioned seedling pushing driving member 25 is preferably a cylinder, an oil cylinder or an electric push rod.

[0046] In this embodiment, the guiding groove 22 includes an upper section 224 located above the supporting plate 21, a lower section 225 located above the supporting plate 21, and an intermediate arc section 226 connecting the upper section 224 and the lower section 225. One end of the lower section 225 away from the intermediate arc section 226 serves as the output end of the seedling tray 100 and is located below the feeding end of the supporting plate 21. The guiding groove 22 is generally U-shaped. The upper section 224 is used to guide the seedling tray 100 to move from the feeding end to the discharging end on the supporting plate 21. The lower section 225 is used to guide the seedling tray 100 to move from the discharging end to the feeding end of the supporting plate 21 and output below the supporting plate 21. The intermediate arc section 226 is used to guide the seedling tray 100 to move from the upper section 224 to the lower section 225. After guiding the seedling tray 100 to move from the feeding end to the discharging end on the supporting plate 21 and taking out all the pot seedlings 200, this kind of guiding groove 22 can guide the seedling tray 100 to move to the lower section 225 of the supporting plate 21 through the intermediate arc section 226 and output from below the feeding end of the supporting plate 21 along the lower section 225. On the premise of realizing the output of the seedling tray 100, it makes full use of the upper and lower spaces and can greatly save the floor space of the tray feeding component 2.

[0047] The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art of this technology, the improvements and transformations obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A bowl seedling picking and conveying device, comprising a frame (1), at least one seedling picking and conveying unit is installed on the frame (1), the seedling picking and conveying unit includes a tray feeding assembly (2) for conveying a seedling tray (100) and enabling multiple rows of bowl seedlings (200) on the seedling tray (100) to move to a preset seedling picking position row by row in sequence, a seedling emergence assembly (3), and a seedling conveying assembly (4) for picking out a row of bowl seedlings (200) located at the preset seedling picking position and conveying them to the seedling emergence assembly (3), characterized in that: The seedling conveying assembly (4) includes a seedling conveying frame (41) and a plurality of seedling picking clips (42). The seedling conveying frame (41) is installed on the frame (1) through a moving mechanism and can be driven by the moving mechanism to make the seedling picking clips (42) move between the preset seedling picking position and the seedling emergence assembly (3) and perform lifting movement. The plurality of seedling picking clips (42) are arranged in a row in a manner that the spacing therebetween can be adjusted and are sequentially disposed on the seedling conveying frame (41). The seedling conveying assembly (4) further includes a spacing adjusting mechanism for adjusting the spacing between the plurality of seedling picking clips (42); the seedling tray conveying assembly (2) includes a supporting plate (21). The two ends of the supporting plate (21) are respectively an inlet end and an outlet end of the seedling tray. The preset seedling picking position is located at a position close to the outlet end. Guide grooves (22) for the two side edges (101) of the seedling tray (100) to be inserted to guide the seedling tray (100) to move from the inlet end to the outlet end and a seedling tray driving mechanism for driving the seedling tray (100) to move from the inlet end to the outlet end and making the multi-row pot seedlings (200) of the seedling tray (100) move to the preset seedling picking position in a row-by-row manner are provided on both sides of the supporting plate (21); a plurality of through holes (102) arranged at intervals in sequence are provided on the two side edges (101) of the seedling tray (100). The spacing between two adjacent through holes (102) is equal to the spacing between two adjacent rows of pot seedlings (200). The seedling tray driving mechanism includes a pushing member (23) and a seedling tray driving member (24) whose driving end reciprocates in the direction from the inlet end to the outlet end. The pushing member (23) is installed on the driving end of the seedling tray driving member (24) in a manner that it can swing freely up and down. When the pushing member (23) swings downward, it can be inserted into the through hole (102), and when the pushing member (23) swings upward, it withdraws from the through hole (102). The guide groove (22) has a supporting surface (221) for supporting the pushing member (23) to keep the pushing member (23) inserted into the through hole (102). The pushing member (23) has an inclined surface (231) that cooperates with the hole wall of the through hole (102) to push the pushing member (23) to swing upward and withdraw from the through hole (102) when the pushing member (23) moves in the direction from the outlet end to the inlet end; the width of the guide groove (22) is greater than the thickness of the edge (101) of the seedling tray (100). A convex platform portion (222) that reduces the width of the guide groove (22) is provided on the inner wall of the guide groove (22). The convex platform portion (222) extends from the preset seedling picking position in the direction of the inlet end of the supporting plate (21), and both ends of the convex platform portion (222) in its extending direction have a transition surface (223) that smoothly connects the convex platform portion (222) and the inner wall of the guide groove (22); the seedling tray conveying assembly (2) is further provided with a seedling lifting mechanism for lifting a row of pot seedlings (200) located at the preset seedling picking position.The guiding groove (22) includes an upper section (224) located above the supporting plate (21), a lower section (225) located above the supporting plate (21), and an intermediate arc section (226) connecting the upper section (224) and the lower section (225). One end of the lower section (225) away from the intermediate arc section (226) serves as the output end of the seedling tray (100) and is located below the tray inlet end of the supporting plate (21).; 2. The pot seedling picking and conveying device according to claim 1, wherein: Among the multiple seedling picking clips (42) arranged in a row, the seedling picking clips (42) at both ends are respectively the first clip and the second clip. The first clip is fixedly arranged on the seedling conveying frame (41), and the remaining seedling picking clips (42) are slidably installed on the seedling conveying frame (41). The spacing adjusting mechanism includes a telescopic driving member (43) installed on the seedling conveying frame (41). The driving end of the telescopic driving member (43) is connected to the second clip and can drive the second clip to move closer to and away from the first clip. A flexible connecting member (44) for restricting the maximum spacing between any two adjacent seedling picking clips (42) is connected between any two adjacent seedling picking clips (42). When the multiple seedling picking clips (42) are arranged in sequence closely, the number is the same as that of the pot seedlings (200) in the single-row pot seedlings (200) and they correspond one by one. And when the seedling conveying frame (41) is at the preset seedling picking position, each seedling picking clip (42) is located directly above the corresponding pot seedling (200).

3. The bowl seedling picking and conveying device according to claim 2, wherein: The seedling emergence assembly (3) includes a seedling dropping box (31). The seedling dropping box (31) has a plurality of seedling dropping channels (32) that are the same in number as and correspond one by one to the seedling picking clips (42). The multiple seedling dropping channels (32) are arranged at intervals in sequence, and the spacing between two adjacent seedling dropping channels (32) is greater than the spacing between two adjacent pot seedlings (200) in the same row of pot seedlings (200).

4. The seedling-pot seedling picking and conveying device according to claim 3, characterized in that: A seedling dropping control mechanism is arranged in the seedling dropping channel (32) and can hold the pot seedling (200) in the seedling dropping channel (32) and release the holding effect on the pot seedling (200) so that the pot seedling (200) drops from the seedling dropping channel (32).

5. The seedling pot picking and conveying device according to claim 1, characterized in that: The moving mechanism includes a translation frame (45) and a lifting frame (46). The translation frame (45) is slidably arranged on the machine frame (1) in the horizontal direction and is connected with a horizontal driving member for driving the translation frame (45) to slide horizontally back and forth. The lifting frame (46) is installed on the translation frame (45) in a manner that can move up and down through a lifting driving member. The seedling conveying frame (41) is installed on the lifting frame (46). The pot seedling picking and conveying device is provided with two picking and conveying units. The two picking and conveying units share one seedling emergence assembly (3). The seedling conveying frames (41) of the two picking and conveying units are respectively installed on the same translation frame (45) through lifting driving members. And when the translation frame (45) drives the seedling picking clip (42) of any one picking and conveying unit to move to the preset seedling picking position, the seedling picking clip (42) of the other picking and conveying unit is located at the position of the seedling emergence assembly (3).

6. The bowl seedling picking and conveying device according to claim 1, wherein: The seedling pushing mechanism includes a seedling pushing driving member (25) and a plurality of seedling pushing rods (26) that are the same in number as and correspond one by one to the single-row pot seedlings (200). The seedling pushing driving member (25) is connected to each seedling pushing rod (26) and can drive the seedling pushing rod (26) to move upward into the seedling tray (100) to push up the corresponding pot seedling (200) and drive the seedling pushing rod (26) to move downward to withdraw from the seedling tray (100).

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