Automatic seedling delivery device for plug seedling transplanter

Abstract

The invention discloses an automatic seedling delivery device for a seedling tray transplanter, and belongs to the technical field of agricultural machinery. The automatic seedling delivery device for the seedling tray transplanter comprises a frame and a seedling tray conveying mechanism, and also comprises: a seedling pushing mechanism, comprising a bracket, a reciprocating mechanism and a plurality of seedling pushing rods; the bracket is connected to the frame; each seedling pushing rod corresponds to a row of seedlings, each seedling pushing rod abuts against the bottom end of the seedlings corresponding to it, and each seedling pushing rod is used to push the seedlings corresponding to it out of the seedling tray; the reciprocating mechanism is arranged on the bracket, and the reciprocating mechanism is used to drive the plurality of seedling pushing rods to reciprocate along the height direction of the seedling tray; the seedling receiving mechanism comprises a plurality of seedling cups, each seedling cup corresponds to a row of seedlings, and when the seedlings are pushed out by the seedling pushing rods, the seedlings fall into the corresponding seedling cups. The automatic seedling delivery device for the seedling tray transplanter of the invention can avoid damage to the stems and leaves of the seedlings in the seedling tray during the process of taking the seedlings from the seedling tray, thereby improving the survival rate of the seedlings.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to an automatic seedling delivery and take-out device for a plug tray seedling transplanter. Background Art

[0002] Seedling cultivation is an important part of crop cultivation. Seedlings are cultivated in nurseries, hotbeds or greenhouses and then transplanted into the land for planting. During seedling cultivation, the seedlings need to be transplanted. The purpose of transplanting is to ensure that the seedlings have enough space to grow. The seedlings are transplanted from high-density plug trays to low-density plug trays or planting sites to ensure the normal growth of the seedlings.

[0003] In order to improve the efficiency of transplanting operations, a plug tray seedling transplanter is often used to transplant cup seedlings from a plug tray. The core components of the existing plug tray seedling transplanter include a seedling picking mechanism, a planting mechanism, and a conveying mechanism. The seedling picking mechanism often uses a clamping mechanism in conjunction with a direct-acting reciprocating seedling grafting mechanism to achieve a seedling picking process consisting of seedling separation and seedling grafting. However, the clamping mechanism is prone to touch the fragile parts of the pot seedlings such as the stems and leaves during the entire seedling picking process, which can easily cause seedling damage. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and provide an automatic seedling delivery and retrieval device for a plug tray seedling transplanter, which can prevent the stems and leaves of the seedlings from being damaged when the seedlings are taken out of the plug tray, thereby improving the survival rate of the seedlings.

[0005] The present invention provides an automatic seedling delivery device for a plug tray seedling transplanter, comprising a frame and a plug tray conveying mechanism, wherein the plug tray conveying mechanism is used to convey a plug tray containing multiple rows of pot seedlings, and further comprising:

[0006] A seedling lifting mechanism, comprising a bracket, a reciprocating mechanism and a plurality of seedling lifting rods;

[0007] The bracket is connected to the frame;

[0008] The plurality of seedling pushing rods are distributed along the width direction of the plug tray, each seedling pushing rod corresponds to a row of seedlings, each seedling pushing rod abuts against the bottom end of the corresponding seedling, and each seedling pushing rod is used to push the corresponding seedling out of the plug tray;

[0009] The reciprocating mechanism is arranged on the bracket, and the reciprocating mechanism is connected to the multiple seedling pushing rods, and the reciprocating mechanism is used to drive the multiple seedling pushing rods to reciprocate along the height direction of the plug tray;

[0010] The seedling receiving mechanism comprises a plurality of seedling cups, which are all connected to the frame and arranged along the width direction of the plug tray. Each seedling cup corresponds to a row of seedlings. When the seedlings are pushed out by the seedling pushing rod, the seedlings fall into the corresponding seedling cups.

[0011] Preferably, the seedling grafting mechanism includes a connecting rod mechanism and an L-shaped seedling grafting plate, the connecting rod mechanism is connected to a first rotating shaft, the connecting rod mechanism is connected to the L-shaped seedling grafting plate, a plurality of baffles are provided on the L-shaped seedling grafting plate, the plurality of baffles are arranged along the width direction of the L-shaped seedling grafting plate, the plurality of baffles and the L-shaped seedling grafting plate form a plurality of seedling guide grooves, each seedling guide groove corresponds to a seedling cup, each seedling guide groove is arranged above the seedling cup corresponding thereto, when the first rotating shaft rotates, under the action of the connecting rod mechanism, each seedling guide groove swings back and forth in a vertical plane, the seedling guide groove is used to receive the pot seedlings and guide the pot seedlings into the corresponding seedling cups.

[0012] Preferably, the connecting rod mechanism includes a rocker arm, a first connecting rod, a second connecting rod and a third connecting rod, one end of the rocker arm is connected to the first rotating shaft, the other end of the rocker arm is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged to one end of the second connecting rod and one end of the third connecting rod, the other end of the second connecting rod is hinged to the frame, the frame is provided with a vertical slide groove, the other end of the third connecting rod is provided with a bearing wheel, the bearing wheel is slidably connected in the slide groove, a fixing rod is connected to the baffle, and the fixing rod is connected to the third connecting rod. When the rocker arm rotates, multiple baffles are driven to swing back and forth in a vertical plane.

[0013] Preferably, a seedling cup fixing plate is provided on the outside of the seedling cup, and a seedling cup supporting plate is provided on the bottom of the seedling cup. The seedling cup supporting plate is used to support the seedling cup, and the seedling cup fixing plate is used to fix the seedling cup.

[0014] Preferably, the first connecting rod and the second connecting rod are both screw rods, and fisheye joint joint bearings are provided at both ends of the first connecting rod and the second connecting rod. The first connecting rod is hinged to the rocker arm through a fisheye joint joint bearing thereon, and the first connecting rod is hinged to a fisheye joint joint bearing on the second connecting rod and the third connecting rod through another fisheye joint joint bearing thereon, and another fisheye joint joint bearing on the second connecting rod is hinged to the frame.

[0015] Preferably, the hole tray conveying mechanism includes a supporting side plate, a chain transmission mechanism, a long pin and a seedling guide rod, the supporting side plate is arranged on one side of the hole tray and fits with the side wall of the hole tray, the chain transmission mechanism is connected to the frame, the long pin is arranged on the chain transmission mechanism, the long pin is located between two adjacent rows of seedlings on the hole tray and abuts against the bottom of the hole tray, the long pin is used to support and position the hole tray, the seedling guide rod is arranged above the hole tray and connected to the frame, the seedling guide rod is pressed on the top of the hole tray, and the seedling guide rod is used to prevent the hole tray from warping and bending deformation.

[0016] Preferably, the chain transmission mechanism includes a driving sprocket, a driven sprocket and a transmission chain, the driving sprocket is connected to a second rotating shaft, the second rotating shaft is connected to a frame pivot, the second rotating shaft is connected to the first rotating shaft, the driven sprocket is connected to a fourth rotating shaft, the fourth rotating shaft is connected to the frame pivot, the driving sprocket is connected to the driven sprocket through the transmission chain, and the long pin shaft is arranged on the transmission chain.

[0017] Preferably, a groove wheel mechanism is further provided between the second rotating shaft and the first rotating shaft, and the groove wheel mechanism includes a third rotating shaft, a dial and a groove wheel, the third rotating shaft is pivotally connected to the frame, the third rotating shaft is gear-connected with the second rotating shaft through a gear system, the groove wheel is arranged on the third rotating shaft, the dial is arranged on the first rotating shaft, and the dial is connected to the groove wheel.

[0018] Preferably, one end of the transmission chain is close to the L-shaped seedling grafting plate, and the other end of the transmission chain is provided with a plug tray transition plate, the plug tray transition plate is used to support the plug tray, and a partition is provided on the plug tray transition plate, the partition is provided between two adjacent rows of seedlings on the plug tray, and the partition is used to position the plug tray.

[0019] Preferably, the reciprocating mechanism includes a cam, a sliding rod and a push rod, the first rotating shaft is pivotally connected to the bracket, the cam is fixedly connected to the first rotating shaft, the bracket is provided with a linear bearing, the sliding rod is slidably connected to the linear bearing, one end of the sliding rod is connected to the push rod, the multiple seedling pushing rods are all connected to the push rod, a spring is provided outside the seedling pushing rod, the spring abuts against the push rod, the spring is used to apply an elastic force toward the cam to the push rod, under the action of the elastic force of the spring, the other end of the sliding rod abuts against the outer edge of the cam, and the cam is used to drive the multiple seedling pushing rods to move along the height direction of the hole tray.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: an automatic seedling delivery and retrieval device for a plug tray seedling transplanter of the present invention utilizes a plug tray conveying mechanism to transport the plug tray, and the plug tray moves along its own length direction until the plug tray is transported to above the seedling ripping mechanism, and then utilizes a reciprocating mechanism to drive multiple seedling ripping rods to move along the height direction of the plug tray. Since each seedling ripping rod abuts against the bottom end of its corresponding seedling pot, when the seedling ripping rod moves along the height direction of the plug tray, the seedling ripping rod pushes the seedling pot out of the plug tray, and the seedling pot pushed out of the plug tray slides into the seedling receiving mechanism and is received by the corresponding seedling cup, completing automatic seedling retrieval of the plug tray, thereby being able to prevent the stems and leaves of the seedling pot from being damaged during the process of retrieval of the seedling pot in the plug tray, thereby improving the survival rate of the seedling pot.

[0021] The device forms a plurality of seedling guide grooves by arranging an L-shaped seedling receiving plate and a plurality of baffles. Driven by a connecting rod mechanism, the plurality of seedling guide grooves can be driven to swing back and forth in a vertical plane, thereby increasing the projection area of ​​the seedling guide grooves in the vertical direction, so that the seedlings can fall into the seedling guide grooves more easily, and can fall into the seedling cups more accurately under the guidance of the L-shaped seedling receiving plate, thereby preventing the seedlings from scattering and thus preventing the seedlings from being damaged due to scattering. The composite motion of the third connecting rod itself can drive the baffle to move back and forth in the vertical direction through the fixed rod, while the baffle itself can also rotate back and forth, thereby driving the L-shaped seedling receiving plate to reciprocate and rotate back and forth in the vertical direction, thereby ensuring that the seedlings can fall into the seedling cups accurately under the guidance of the L-shaped seedling receiving plate, thereby preventing the seedlings from colliding and thus avoiding damage to the seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the hole tray conveying mechanism of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the seedling supporting mechanism of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the seedling grafting mechanism of the present invention.

[0027] Description of reference numerals:

[0028] 1. Plug tray conveying mechanism, 2. L-shaped seedling receiving plate, 3. Seedling lifting mechanism, 4. Seedling receiving mechanism, 5. Motor, 6. Frame, 7. Reciprocating mechanism, 8. Plug tray transition plate, 9. Long pin shaft, 10. Driven sprocket, 11. Transmission chain, 12. Plug tray, 13. Slide bar, 14. Seedling pot, 15. Support side plate, 16. Driving sprocket, 17. Seedling guide rod, 18. Connecting rod mechanism, 19. Second rotating shaft, 20. Gear train, 21. Grooved wheel, 22. Third rotating shaft, 23. Baffle, 24. First rotating shaft, 25. Dial, 2 6. Seedling guide groove, 27. Fourth rotating shaft, 28. First connecting rod, 29. Seedling lifting rod, 30. Chain transmission mechanism, 31. Spring, 32. Groove wheel mechanism, 33. Push rod, 34. Partition, 35. Cam, 36. Locking ring, 37. Roller, 38. Bracket, 39. Linear bearing, 40. Slide groove, 41. Bearing wheel, 42. Third connecting rod, 43. Fisheye joint joint bearing, 44. Second connecting rod, 45. Rocker arm, 46. Seedling cup fixing plate, 47. Seedling cup support plate, 48. Seedling cup, 49. Fixing rod. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 5 , the specific implementation of the present invention is described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 5As shown, the automatic seedling delivery device of the seedling tray transplanter provided by the present invention includes a frame 6 and a seedling tray conveying mechanism 1, the seedling tray conveying mechanism 1 is used to convey the seedling tray 12 containing multiple rows of pot seedlings 14, and also includes: a seedling pushing mechanism 3 and a seedling receiving mechanism 4, the seedling pushing mechanism 3 includes a bracket 38, a reciprocating mechanism 7 and a plurality of seedling pushing rods 29; the bracket 38 is connected to the frame 6; the plurality of seedling pushing rods 29 are distributed along the width direction of the seedling tray 12, each seedling pushing rod 29 corresponds to a row of pot seedlings 14, each seedling pushing rod 29 abuts against the bottom end of the corresponding pot seedling 14, and each seedling pushing rod 29 is used to push the corresponding seedlings 14 in the plug tray 12 out of the plug tray 12; the reciprocating mechanism 7 is arranged on the bracket 38, and the reciprocating mechanism 7 is connected to multiple seedling pushing rods 29, and the reciprocating mechanism 7 is used to drive multiple seedling pushing rods 29 to reciprocate along the height direction of the plug tray 12; the seedling receiving mechanism 4 includes multiple seedling cups 48, and the multiple seedling cups 48 are all connected to the frame 6. The multiple seedling cups 48 are arranged along the width direction of the plug tray 12, and each seedling cup 48 corresponds to a row of seedlings 14. When the seedlings 14 are pushed out by the seedling pushing rods 29, the seedlings 14 fall into the corresponding seedling cups 48.

[0031] The working principle of the above embodiment is briefly described:

[0032] When the device is in use, the hole tray 12 is conveyed by the hole tray conveying mechanism 1, and the hole tray 12 moves along its own length direction until the hole tray 12 is conveyed to the top of the seedling pushing mechanism 3, and then the reciprocating mechanism 7 is used to drive multiple seedling pushing rods 29 to move along the height direction of the hole tray 12. Since each seedling pushing rod 29 abuts against the bottom end of its corresponding pot seedling 14, when the seedling pushing rod 29 moves along the height direction of the hole tray 12, the seedling pushing rod 29 pushes the pot seedling 14 out of the hole tray 12, and the pot seedling 14 pushed out of the hole tray 12 slides into the seedling receiving mechanism 4 and is received by the corresponding seedling cup 48, thereby completing the automatic seedling removal of the hole tray 12.

[0033] The automatic seedling delivery and retrieval device of the plug tray seedling transplanter of the present invention can assist the user to retrieve multiple potted seedlings 14 in the plug tray 12 when transplanting the potted seedlings 14 in the plug tray 12, thereby improving the seedling retrieval efficiency and preventing the stems and leaves of the potted seedlings 14 from being damaged when retrieval, thereby improving the survival rate of the potted seedlings 14.

[0034] On the basis of the above-mentioned embodiment, in order to prevent the seedlings 14 from scattering, the seedlings 14 in the pot are prevented from being damaged due to scattering.

[0035] like Figure 1 and Figure 5As shown, the seedling grafting mechanism 4 includes a connecting rod mechanism 18 and an L-shaped seedling grafting plate 2, the connecting rod mechanism 18 is connected to a first rotating shaft 24, the connecting rod mechanism 18 is connected to the L-shaped seedling grafting plate 2, a plurality of baffles 23 are provided on the L-shaped seedling grafting plate 2, and the plurality of baffles 23 are arranged along the width direction of the L-shaped seedling grafting plate 2, the plurality of baffles 23 and the L-shaped seedling grafting plate 2 form a plurality of seedling guide grooves 26, each seedling guide groove 26 corresponds to a seedling cup 48, and each seedling guide groove 26 is arranged above the seedling cup 48 corresponding thereto, when the first rotating shaft 24 rotates, under the action of the connecting rod mechanism 18, each seedling guide groove 26 swings back and forth in a vertical plane, and the seedling guide groove 26 is used to receive the pot seedlings 14 and guide the pot seedlings 14 into the seedling cup 48 corresponding thereto.

[0036] When the first rotating shaft 24 drives the seedling push rod 29 to push the seedling 14 out of the plug tray 12, the first rotating shaft 24 drives the connecting rod mechanism 18 to move at the same time, and the connecting rod mechanism 18 drives the L-shaped seedling receiving plate 2 to deflect downward, thereby increasing the projection area of ​​the seedling guide groove 26 in the vertical direction, so that the seedling 14 can fall into the seedling guide groove 26 more easily. After the seedling 14 falls into the seedling guide groove 26, the rotating first rotating shaft 24 drives the seedling guide groove 26 to deflect upward through the connecting rod mechanism 18, and under the diversion effect of the seedling guide groove 26, the seedling 14 in the seedling guide groove 26 can fall into the seedling cup 48 below more accurately under the effect of its own gravity. By providing an L-shaped seedling receiving plate 2 and a plurality of baffles 23, a plurality of seedling guide grooves 26 are formed. Driven by the connecting rod mechanism 18, the plurality of seedling guide grooves 26 can be driven to swing back and forth in a vertical plane, thereby increasing the projection area of ​​the seedling guide grooves 26 in the vertical direction, so that the seedlings 14 in the pot can fall into the seedling guide grooves 26 more easily, and can fall into the seedling cups 48 more accurately under the guidance of the L-shaped seedling receiving plate 2, thereby preventing the seedlings 14 in the pot from scattering, thereby preventing the seedlings 14 in the pot from being damaged due to scattering.

[0037] As a preferred solution, Figure 1 and Figure 5As shown, the connecting rod mechanism 18 includes a rocker arm 45, a first connecting rod 28, a second connecting rod 44 and a third connecting rod 42, one end of the rocker arm 45 is connected to the first rotating shaft 24, the other end of the rocker arm 45 is hinged to one end of the first connecting rod 28, the other end of the first connecting rod 28 is hinged to one end of the second connecting rod 44 and one end of the third connecting rod 42, the other end of the second connecting rod 44 is hinged to the frame 6, the frame 6 is provided with a vertical slide groove 40, the other end of the third connecting rod 42 is provided with a bearing wheel 41, the bearing wheel 41 is slidably connected in the slide groove 40, the baffle 23 is connected to a fixing rod 49, the fixing rod 49 is connected to the third connecting rod 42, when the rocker arm 45 rotates, it drives multiple baffles 23 to swing back and forth in a vertical plane. When the first rotating shaft 24 rotates, it drives the rocker arm 45 to rotate around the axial direction of the first rotating shaft 24, thereby driving the first connecting rod 28 to swing back and forth, thereby driving the second connecting rod 44 and the third connecting rod 42 to swing back and forth. Under the action of the second connecting rod 44, while the third connecting rod 42 rotates itself, one end of the third connecting rod 42 connected to the bearing wheel 41 also slides in the slide groove 40. The composite motion of the third connecting rod 42 itself can drive the baffle plate 23 to reciprocate in the vertical direction through the fixed rod 49, while the baffle plate 23 itself also rotates back and forth, thereby driving the L-shaped seedling receiving plate 2 to reciprocate and rotate back and forth in the vertical direction, thereby ensuring that the seedling pot 14 can accurately fall into the seedling cup 48 under the diversion action of the L-shaped seedling receiving plate 2, thereby preventing the seedling pot 14 from colliding with the wall of the seedling cup 48 when falling.

[0038] As a preferred solution, Figure 1 and Figure 5 As shown, a seedling cup fixing plate 46 is provided on the outside of the seedling cup 48, and a seedling cup supporting plate 47 is provided at the bottom of the seedling cup 48. The seedling cup supporting plate 47 is used to support the seedling cup 48, and the seedling cup fixing plate 46 is used to fix the seedling cup 48. The seedling cup fixing plate 46 can fix the seedling cup 48 to maintain the stability of the seedling cup 48. The seedling cup supporting plate 47 can support the seedling cup 48 and can be adjusted according to the seedling drop position, thereby further ensuring that the pot seedling 14 can accurately fall into the seedling cup 48.

[0039] As a preferred solution, Figure 5As shown, the first connecting rod 28 and the second connecting rod 44 are both screw rods, and fisheye joint joint bearings 43 are provided at both ends of the first connecting rod 28 and the second connecting rod 44. The first connecting rod 28 is hinged to the rocker arm 45 through a fisheye joint joint bearing 43 thereon, and the first connecting rod 28 is hinged to a fisheye joint joint bearing 43 on the second connecting rod 44 and the third connecting rod 42 through another fisheye joint joint bearing 43 thereon, and another fisheye joint joint bearing 43 on the second connecting rod 44 is hinged to the frame 6. The first connecting rod 28 and the second connecting rod 44 are both screw rods. Since the screw rod has threads on it, the length of the first connecting rod 28 or the second connecting rod 44 can be changed by adjusting the rotation depth of the fisheye joint joint bearing 43 in the screw rod, so that the first connecting rod 28 or the second connecting rod 44 has variable flexibility, and the change in the length of the first connecting rod 28 or the second connecting rod 44 will change the movement amplitude of the third connecting rod 42, thereby improving the success rate of the L-shaped seedling grafting plate 2 grafting the seedlings 14 in the pot.

[0040] As a preferred solution, Figure 1 and Figure 3 As shown, the hole tray conveying mechanism 1 includes a supporting side plate 15, a chain transmission mechanism 30, a long pin shaft 9 and a seedling guide rod 17, the supporting side plate 15 is arranged on one side of the hole tray 12 and is in contact with the side wall of the hole tray 12, the chain transmission mechanism 30 is connected to the frame 6, the long pin shaft 9 is arranged on the chain transmission mechanism 30, the long pin shaft 9 is located between two adjacent rows of seedlings 14 on the hole tray 12 and abuts against the bottom of the hole tray 12, the long pin shaft 9 is used to support and position the hole tray 12, the seedling guide rod 17 is arranged above the hole tray 12 and is connected to the frame 6, the seedling guide rod 17 is pressed on the top of the hole tray 12, and the seedling guide rod 17 is used to prevent the hole tray 12 from warping and bending deformation. When the hole tray conveying mechanism 1 conveys the hole tray 12, the side edge of the hole tray 12 is placed on the supporting side plate 15, and a long pin shaft 9 is stuck between two adjacent rows of seedlings 14 on the hole tray 12. The chain transmission mechanism 30 is controlled to rotate, thereby driving the long pin shaft 9 thereon to rotate. Since the long pin shaft 9 is stuck between two adjacent rows of seedlings 14, the long pin shaft 9 can drive the hole tray 12 to rotate together when rotating, so that the hole tray 12 is transmitted. When the hole tray 12 moves to the seedling guide rod 17, the seedling guide rod 17 is pressed on the top of the hole tray 12, thereby preventing the hole tray 12 from warping and bending deformation, ensuring the accuracy of the landing position of the seedlings 14, and preventing the seedlings 14 from bumping.

[0041] As a preferred solution, Figure 1 and Figure 3As shown, the chain transmission mechanism 30 includes a driving sprocket 16, a driven sprocket 10 and a transmission chain 11, the driving sprocket 16 is connected to a second rotating shaft 19, the second rotating shaft 19 is pivotally connected to the frame 6, the second rotating shaft 19 is connected to the first rotating shaft 24, the driven sprocket 10 is connected to a fourth rotating shaft 27, the fourth rotating shaft 27 is pivotally connected to the frame 6, the driving sprocket 16 is connected to the driven sprocket 10 through the transmission chain 11, and the long pin shaft 9 is arranged on the transmission chain 11. While the motor 5 drives the first rotating shaft 24 to rotate, the first rotating shaft 24 drives the second rotating shaft 19 connected thereto to rotate, the second rotating shaft 19 drives the driving sprocket 16 to rotate, the driving sprocket 16 drives the driven sprocket 10 to rotate through the transmission chain 11, thereby driving the long pin shaft 9 to rotate, thereby transmitting the hole tray 12, the long pin shaft 9 can limit the hole tray 12 to prevent the hole tray 12 from sliding, thereby preventing the seedling pushing rod 29 from damaging the pot seedling 14 due to incorrect position.

[0042] As a preferred solution, Figure 1 and Figure 3 As shown, a groove wheel mechanism 32 is further provided between the second rotating shaft 19 and the first rotating shaft 24, and the groove wheel mechanism 32 includes a third rotating shaft 22, a dial 25 and a groove wheel 21, the third rotating shaft 22 is pivotally connected to the frame 6, the third rotating shaft 22 is gear-connected with the second rotating shaft 19 through a gear train 20, the groove wheel 21 is arranged on the third rotating shaft 22, the dial 25 is arranged on the first rotating shaft 24, and the dial 25 is connected to the groove wheel 21. The gear train 20 is a reduction gear train 20. By setting a groove wheel mechanism 32, when the first rotating shaft 24 rotates, the dial 25 is driven to rotate. The dial 25 intermittently drives the groove wheel 21 to rotate, thereby intermittently driving the third rotating shaft 22 to rotate. The third rotating shaft 22 intermittently drives the first rotating shaft 24 to rotate through the gear train 20. Therefore, under the drive of the motor 5, the reciprocating mechanism 7 reciprocates and the hole tray 12 moves intermittently, thereby leaving sufficient time for the push rod 29 to move, preventing the push rod 29 from being stuck by the hole tray 12, and ensuring the normal operation of the device.

[0043] As a preferred solution, Figure 1 As shown, one end of the transmission chain 11 is close to the L-shaped seedling plate 2, and the other end of the transmission chain 11 is provided with a plug tray transition plate 8, the plug tray transition plate 8 is used to support the plug tray 12, and a partition 34 is provided on the plug tray transition plate 8, the partition 34 is provided between two adjacent rows of seedlings 14 on the plug tray 12, and the partition 34 is used to position the plug tray 12. By providing the plug tray transition plate 8, the plug tray 12 can be limited by the partition 34 on the plug tray 12 before the plug tray 12 enters the plug tray conveying mechanism 1, thereby limiting the posture of the plug tray 12 when entering the plug tray conveying mechanism 1, ensuring that the long pin shaft 9 can be accurately stuck between two adjacent rows of seedlings 14, thereby further ensuring the accuracy of the position of the plug tray 12.

[0044] As a preferred solution, Figure 1 , Figure 2 and 4 As shown, the reciprocating mechanism 7 includes a cam 35, a slide bar 13 and a push rod 33. The first rotating shaft 24 is pivotally connected to the bracket 38. The cam 35 is fixedly connected to the first rotating shaft 24. A linear bearing 39 is provided on the bracket 38. The slide bar 13 is slidably connected to the linear bearing 39. One end of the slide bar 13 is connected to the push rod 33. The multiple seedling ejecting rods 29 are all connected to the push rod 33. A spring 31 is provided outside the seedling ejecting rod 29. The spring 31 abuts against the push rod 33. The spring 31 is used to apply an elastic force toward the cam 35 to the push rod 33. Under the action of the elastic force of the spring 31, the other end of the slide bar 13 abuts against the outer edge of the cam 35. The cam 35 is used to drive the multiple seedling ejecting rods 29 to move along the height direction of the hole tray 12. The cam 35 is connected to the first rotating shaft 24 through a locking retaining ring 36. The first rotating shaft 24 is connected to a motor 5. The motor 5 drives the first rotating shaft 24 to rotate, and the first rotating shaft 24 drives the cam 35 to rotate. A roller 37 is provided on the slide bar 13, and the slide bar 13 abuts against the outer edge of the cam 35 through the roller 37. When the cam 35 rotates, the slide bar 13 can be driven by the roller 37 to move in the direction close to the hole tray 12. The linear bearing 39 guides the movement of the slide bar 13, and the slide bar 13 drives the push rod 33 to move in the direction close to the hole tray 12, thereby driving the multiple seedling ejecting rods 29 to move in the direction close to the hole tray 12. The multiple seedling ejecting rods 29 simultaneously apply a pushing force to their corresponding seedling pots 14 to eject a row of seedling pots 14 on the hole tray 12 at the same time, and the ejected row of seedling pots 14 fall into each seedling cup 48 respectively, thereby improving the seedling separation efficiency.

[0045] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An automatic seedling delivery device for a seedling tray transplanter, comprising a frame (6) and a seedling tray conveying mechanism (1), wherein the seedling tray conveying mechanism (1) is used to convey a seedling tray (12) containing multiple rows of seedlings (14), and is characterized in that: Also includes: A seedling pushing mechanism (3) comprises a support (38), a reciprocating mechanism (7) and a plurality of seedling pushing rods (29); The bracket (38) is connected to the frame (6); The plurality of seedling pushing rods (29) are distributed along the width direction of the plug tray (12), each seedling pushing rod (29) corresponds to a row of potted seedlings (14), each seedling pushing rod (29) abuts against the bottom end of the corresponding potted seedling (14), and each seedling pushing rod (29) is used to push the corresponding potted seedling (14) in the plug tray (12) out of the plug tray (12); The reciprocating mechanism (7) is arranged on the bracket (38), the reciprocating mechanism (7) is connected to the plurality of seedling pushing rods (29), and the reciprocating mechanism (7) is used to drive the plurality of seedling pushing rods (29) to reciprocate along the height direction of the plug tray (12); The seedling receiving mechanism (4) comprises a plurality of seedling cups (48), wherein the plurality of seedling cups (48) are connected to the frame (6), the plurality of seedling cups (48) are arranged along the width direction of the plug tray (12), each seedling cup (48) corresponds to a row of seedlings (14), and when the seedlings (14) are pushed out by the seedling pushing rod (29), the seedlings (14) fall into the corresponding seedling cups (48); The seedling grafting mechanism (4) comprises a connecting rod mechanism (18) and an L-shaped seedling grafting plate (2), the connecting rod mechanism (18) being connected to a first rotating shaft (24), the connecting rod mechanism (18) being connected to the L-shaped seedling grafting plate (2), a plurality of baffles (23) being arranged along the width direction of the L-shaped seedling grafting plate (2), the plurality of baffles (23) and the L-shaped seedling grafting plate (2) forming a plurality of seedling guide grooves (26), each seedling guide groove (26) corresponding to a seedling cup (48), each seedling guide groove (26) being arranged above the seedling cup (48) corresponding thereto, when the first rotating shaft (24) rotates, under the action of the connecting rod mechanism (18), each seedling guide groove (26) swings back and forth in a vertical plane, the seedling guide groove (26) being used to receive the seedlings in the pot (14) and guide the seedlings in the pot (14) into the seedling cup (48) corresponding thereto; The connecting rod mechanism (18) comprises a rocker arm (45), a first connecting rod (28), a second connecting rod (44) and a third connecting rod (42); one end of the rocker arm (45) is connected to the first rotating shaft (24); the other end of the rocker arm (45) is hinged to one end of the first connecting rod (28); the other end of the first connecting rod (28) is hinged to one end of the second connecting rod (44) and one end of the third connecting rod (42); the other end of the second connecting rod (44) is hinged to the frame (6); the frame (6) is provided with a vertical slide groove (40); the other end of the third connecting rod (42) is provided with a bearing wheel (41); the bearing wheel (41) is slidably connected in the slide groove (40); a fixing rod (49) is connected to the baffle plate (23); the fixing rod (49) is connected to the third connecting rod (42); when the rocker arm (45) rotates, the plurality of baffle plates (23) are driven to swing back and forth in a vertical plane.

2. The automatic seedling delivery device for the plug tray seedling transplanter according to claim 1, characterized in that: A seedling cup fixing plate (46) is arranged on the outside of the seedling cup (48), and a seedling cup supporting plate (47) is arranged on the bottom of the seedling cup (48). The seedling cup supporting plate (47) is used to support the seedling cup (48), and the seedling cup fixing plate (46) is used to fix the seedling cup (48).

3. The automatic seedling delivery device for the plug tray seedling transplanter according to claim 2, characterized in that: The first connecting rod (28) and the second connecting rod (44) are both screw rods, and fisheye joint joint bearings (43) are provided at both ends of the first connecting rod (28) and the second connecting rod (44). The first connecting rod (28) is hinged to the rocker arm (45) through a fisheye joint joint bearing (43) thereon, and the first connecting rod (28) is hinged to a fisheye joint joint bearing (43) on the second connecting rod (44) and the third connecting rod (42) through another fisheye joint joint bearing (43) thereon, and another fisheye joint joint bearing (43) on the second connecting rod (44) is hinged to the frame (6).

4. The automatic seedling delivery device for the plug tray seedling transplanter according to claim 1, characterized in that: The plug tray conveying mechanism (1) comprises a supporting side plate (15), a chain transmission mechanism (30), a long pin shaft (9) and a seedling guide rod (17); the supporting side plate (15) is arranged on one side of the plug tray (12) and is in contact with the side wall of the plug tray (12); the chain transmission mechanism (30) is connected to the frame (6); the long pin shaft (9) is arranged on the chain transmission mechanism (30); the long pin shaft (9) is located between two adjacent rows of seedlings (14) on the plug tray (12) and is in contact with the bottom of the plug tray (12); the long pin shaft (9) is used to support and position the plug tray (12); the seedling guide rod (17) is arranged above the plug tray (12) and is connected to the frame (6); the seedling guide rod (17) is pressed on the top of the plug tray (12); the seedling guide rod (17) is used to prevent the plug tray (12) from warping and bending deformation.

5. The automatic seedling delivery device for the plug tray seedling transplanter according to claim 4, characterized in that: The chain transmission mechanism (30) comprises a driving sprocket (16), a driven sprocket (10) and a transmission chain (11); the driving sprocket (16) is connected to a second rotating shaft (19); the second rotating shaft (19) is pivotally connected to a frame (6); the second rotating shaft (19) is connected to a first rotating shaft (24); the driven sprocket (10) is connected to a fourth rotating shaft (27); the fourth rotating shaft (27) is pivotally connected to the frame (6); the driving sprocket (16) is connected to the driven sprocket (10) via the transmission chain (11); and the long pin shaft (9) is arranged on the transmission chain (11).

6. The automatic seedling delivery device for the plug tray seedling transplanter according to claim 5, characterized in that: A grooved wheel mechanism (32) is also provided between the second rotating shaft (19) and the first rotating shaft (24), and the grooved wheel mechanism (32) comprises a third rotating shaft (22), a dial (25) and a grooved wheel (21), wherein the third rotating shaft (22) is pivotally connected to the frame (6), the third rotating shaft (22) is gear-connected with the second rotating shaft (19) through a gear train (20), the grooved wheel (21) is provided on the third rotating shaft (22), the dial (25) is provided on the first rotating shaft (24), and the dial (25) cooperates with the grooved wheel (21).

7. The automatic seedling delivery and retrieval device for the plug tray seedling transplanter according to claim 6, characterized in that: One end of the transmission chain (11) is close to the L-shaped seedling grafting plate (2), and the other end of the transmission chain (11) is provided with a plug tray transition plate (8), the plug tray transition plate (8) is used to support the plug tray (12), and a partition plate (34) is provided on the plug tray transition plate (8), and the partition plate (34) is arranged between two adjacent rows of seedlings (14) on the plug tray (12), and the partition plate (34) is used to position the plug tray (12).

8. The automatic seedling delivery and retrieval device for a plug tray seedling transplanter according to claim 1, characterized in that: The reciprocating mechanism (7) comprises a cam (35), a slide bar (13) and a push rod (33); the first rotating shaft (24) is pivotally connected to a bracket (38); the cam (35) is fixedly connected to the first rotating shaft (24); a linear bearing (39) is provided on the bracket (38); the slide bar (13) is slidably connected to the linear bearing (39); one end of the slide bar (13) is connected to the push rod (33); the plurality of seedling pushing rods (29) are all connected to the push rod (33); a spring (31) is provided outside the seedling pushing rod (29); the spring (31) abuts against the push rod (33); the spring (31) is used to apply an elastic force toward the cam (35) to the push rod (33); under the action of the elastic force of the spring (31), the other end of the slide bar (13) abuts against the outer edge of the cam (35); the cam (35) is used to drive the plurality of seedling pushing rods (29) to move along the height direction of the hole tray (12).

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