A kind of cam turnover continuous parallel ejection seedling picking device

Abstract

The present invention discloses a cam turnover continuous parallel ejection seedling taking device, belonging to the technical field of crop planting, which includes a seedling tray conveying mechanism, a cam ejection seedling taking mechanism, a transmission system and a load-bearing bottom plate. The cam ejection seedling taking mechanism is arranged on the seedling tray conveying mechanism, the load-bearing bottom plate is arranged at the bottom end of the seedling tray conveying mechanism, and the transmission system is arranged at one end of the seedling tray conveying mechanism. The transmission system is connected with the cam ejection seedling taking mechanism, and the transmission system is connected with the power input end to realize power input. The power input drives the transmission system to operate, thereby driving the cam ejection seedling taking mechanism to rotate. The pot seedlings are conveyed to the working position of the cam ejection seedling taking mechanism along with the seedling tray by the seedling tray conveying mechanism. The cam ejection seedling taking mechanism is used to eject the pot seedlings to realize the seedling taking function, and the load-bearing bottom plate is used to fixedly support the seedling taking device; The present invention is provided with a push rod assembly, and the pot seedlings can be ejected from the seedling tray through the push rod assembly to realize the efficient seedling taking function.

Description

Technical Field

[0001] The present invention belongs to the technical field of crop planting, and particularly relates to a cam turnover continuous parallel ejecting seedling taking device. Background Art

[0002] Transplanting of plug seedlings has high survival rate of transplanting and short green-reverting time because the seedling roots carry nutrient soil. 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, transplanting of plug seedlings has certain advantages in improving the utilization of idle fields and increasing the multiple cropping index. The transplanting rate of plug seedlings of field crops such as rapeseed and corn is increasing year by year.

[0003] However, plug seedlings are cultivated through seedling trays during cultivation. When transplanting, the seedlings need to be taken out for transplanting. Due to the complex transplanting procedure, the process of taking seedlings is mostly carried out manually. The efficiency of manual seedling taking is low and the demand for workers is high. Therefore, how to provide a top-out type seedling taking device with reasonable structural design, stable performance and high efficiency is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a cam turnover continuous parallel ejecting seedling taking device to solve the above technical problems. The device is provided with a push rod assembly, and through the push rod assembly, the plug seedlings can be ejected from the seedling tray to achieve the function of efficient seedling taking.

[0005] To achieve the above purpose, the present invention adopts the following technical solution:

[0006] A cam turnover continuous parallel ejecting seedling taking device includes a seedling tray conveying mechanism, a cam ejecting seedling taking mechanism, a transmission system and a load-bearing bottom plate. The cam ejecting seedling taking mechanism is arranged on the seedling tray conveying mechanism. The load-bearing bottom plate is arranged at the bottom end of the seedling tray conveying mechanism. One end of the seedling tray conveying mechanism is provided with a transmission system. The transmission system is connected with the cam ejecting seedling taking mechanism. The transmission system is connected with the power input end to realize power input. The power input drives the transmission system to operate, thereby driving the cam ejecting seedling taking mechanism to rotate. The plug seedlings are conveyed to the working position of the cam ejecting seedling taking mechanism through the seedling tray conveying mechanism along with the seedling tray. The cam ejecting seedling taking mechanism is used to eject the plug seedlings to achieve the function of seedling taking. The load-bearing bottom plate is used for fixedly supporting the seedling taking device.

[0007] Further, the seedling tray conveying mechanism includes a seedling tray conveying component, a seedling tray recycling component and a positioning and mounting seat. The positioning and mounting seat is arranged on the load-bearing bottom plate. The positioning and mounting seat is arranged at both ends of the seedling tray conveying component and the seedling tray recycling component. The seedling tray recycling component is arranged between the seedling tray conveying component and the load-bearing bottom plate.

[0008] Further, the seedling tray conveying component includes a guiding strip, a hanging support plate, a seedling tray initial positioning assembly, and a guiding slide rail. The seedling tray initial positioning assembly is provided on each of the positioning and mounting seats. The positioning and mounting seats are connected by two hanging support plates. A guiding strip is provided on the two hanging support plates. The bottom end of the guiding strip is connected to the seedling tray recycling component through the guiding slide rail;

[0009] The seedling tray recycling component includes a recycling plate, a limiting plate, a connecting plate, and a supporting bottom plate. The supporting bottom plate is fixed above the load-bearing bottom plate. The limiting plate is vertically fixed on both sides of the supporting bottom plate and abuts against the positioning and mounting seats on both sides respectively. The recycling plate is vertically fixed in the middle of the supporting bottom plate. The connecting plate is fixedly connected to the top end of the limiting plate. The connecting plate is fixedly connected to the guiding slide rail.

[0010] Further, the seedling tray initial positioning assembly includes a front fastening pressure plate, a rear supporting pressure plate, a linear guide rail, a positioning guide, a tension spring, an eccentric pin shaft, a seedling tray baffle, and a positioning baffle. The front fastening pressure plate and the rear supporting pressure plate are fastened and connected to form a guiding straight groove. A strip-shaped through hole is provided on each of the front fastening pressure plate and the rear supporting pressure plate. A positioning guide is provided in the guiding straight groove. The positioning guide is fixedly connected to the linear guide rail. Both sides of the positioning guide are respectively embedded in the strip-shaped through holes on the fastening pressure plate and the rear supporting pressure plate. A pin hole is provided at the bottom end of the positioning guide. The pin hole at the bottom end of the positioning guide is fixedly connected with a seedling tray baffle and a positioning baffle through an eccentric pin shaft and a flat key. One end of the eccentric pin shaft away from the positioning guide is connected to the positioning guide through a tension spring.

[0011] Further, the positioning and mounting base includes a mounting base side wall plate, a cam groove wall plate, a cam groove support wall plate, and a plurality of positioning and mounting plates. The mounting base side wall plate and the plurality of positioning and mounting plates, together with the cam groove wall plate and the cam groove support wall plate, surround and form a parallel rotating cavity. The cam groove wall plate and the cam groove support wall plate are provided with cam grooves, and the cam grooves are used to abut against the cam ejecting and seedling-taking mechanism. The mounting base side wall plate is connected to the seedling tray initial positioning assembly, and opening grooves are provided at the connection positions. Linear guide rails are provided in the opening grooves. The mounting base side wall plate is further provided with an annular through hole, and a cam ejecting and seedling-taking mechanism is provided at the annular through hole of the mounting base side wall plate. Anti-reverse components for the ejector rods are provided on the inner sides of the cam groove wall plate and the cam groove support wall plate. A cam groove support member is provided on the outer side of the cam groove support wall plate. Two grooves for placing the anti-reverse components for the ejector rods are further provided on one side of the edge of the annular through hole of the mounting base side wall plate close to the cam ejecting and seedling-taking mechanism. A transmission shaft Ⅰ penetrates through the bottoms of the two positioning and mounting bases. The transmission shaft Ⅰ penetrates through the cam groove support member on the outer sides of the cam groove wall plate and the cam groove support wall plate. A transmission shaft Ⅱ is further provided in the cam groove support wall plate of the cam groove support member. The transmission shaft Ⅱ penetrates through the cam groove support member and the cam groove support wall plate. Circular through holes are provided on both the cam groove wall plate and the cam groove support wall plate, and the circular through holes are used to connect the cam ejecting and seedling-taking mechanism;

[0012] A transmission gear Ⅰ is fixedly provided on the part of the shaft of the transmission shaft Ⅰ located inside the cam groove support wall plate of the cam groove support member. A transmission gear Ⅱ is fixedly provided on the part of the shaft of the transmission shaft Ⅱ located inside the cam groove support wall plate of the cam groove support member. The transmission gear Ⅱ meshes with the transmission gear Ⅰ. A transmission gear Ⅲ is fixedly provided on the part of the shaft of the transmission shaft Ⅱ located inside the rotating cavity, and the transmission gear Ⅲ is used to cooperate with the cam ejecting and seedling-taking mechanism.

[0013] Further, the cam ejecting and seedling-taking mechanism includes an ejector rod assembly, a main shaft assembly, a parallel rotating assembly Ⅰ, and a parallel rotating assembly Ⅱ. The parallel rotating assembly Ⅰ and the parallel rotating assembly Ⅱ are respectively arranged inside the two parallel rotating cavities. The axial centers of the parallel rotating assembly Ⅰ and the parallel rotating assembly Ⅱ are connected through the main shaft assembly. A plurality of the ejector rod assemblies penetrate through the positions far from the axial center of the parallel rotating assembly Ⅰ and the parallel rotating assembly Ⅱ. Both ends of the plurality of ejector rod assemblies respectively abut against the cam grooves on the cam groove wall plate and the cam groove support wall plate.

[0014] Furthermore, the main shaft assembly includes a crank connecting member II, an anti-disengagement stopper, a connecting rod straight shaft, and an inclination adjusting member. The connecting rod straight shaft is provided with crank connecting members II at both ends. Anti-disengagement stoppers are provided on the crank connecting members II. Inclination adjusting members are fitted at one end of the crank connecting members II away from the anti-disengagement stoppers. An obliquely elongated hole is provided at one end of the inclination adjusting member away from the crank connecting member II. Reverse elongated holes are provided at the elongated through holes on the cam groove wall plate and the cam groove support wall plate. One end of each of the two inclination adjusting members is fixed to the elongated through holes on the cam groove wall plate and the cam groove support wall plate respectively through bolts via the obliquely elongated holes on the bolts.

[0015] Furthermore, the parallel rotation assembly I includes a chute driving wheel I, a chute guiding wheel I, and a Z-shaped connecting crankshaft I. The chute driving wheel I and the chute guiding wheel I are arranged at both ends of the crank connecting member II. The edges of the chute driving wheel I and the chute guiding wheel I are connected to each other through the Z-shaped connecting crankshaft I. A plurality of elongated guiding grooves are provided on both the chute driving wheel I and the chute guiding wheel I;

[0016] The parallel rotation assembly II includes a chute driving wheel II, a chute guiding wheel II, and a Z-shaped connecting crankshaft II. The chute driving wheel II and the chute guiding wheel II are arranged at both ends of the crank connecting member II. The edges of the chute driving wheel II and the chute guiding wheel II are connected to each other through the Z-shaped connecting crankshaft II. A plurality of elongated guiding grooves are provided on both the chute driving wheel II and the chute guiding wheel II. The ejector rod assembly penetrates through the elongated guiding grooves. Among them, the chute driving wheel II is a gear, and the chute driving wheel II meshes with a transmission gear III.

[0017] Furthermore, the ejector rod assembly includes a crank connecting member I, an ejector rod straight shaft, a lower push rod, and an ejector pin. The crank connecting members I are provided at both ends of the ejector rod straight shaft. One end of each of the two crank connecting members I away from the center of the ejector rod straight shaft is respectively arranged in the elongated guiding grooves in the same direction of the parallel rotation assembly I and the parallel rotation assembly II. A plurality of ejector pins are provided at the middle position of the ejector rod straight shaft. Lower push rods are provided at both the starting end and the ending end of the plurality of ejector pins.

[0018] Furthermore, the ejector rod anti-reverse assembly includes a torsion spring and a pin shaft. The pin shaft is fixed in a groove. The torsion spring is sleeved on the pin shaft. The clamping arms on both sides of the torsion spring are respectively closely attached to the two side walls of the groove. One clamping arm of the torsion spring is tangent to the ejector rod assembly at the initial position.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention is provided with a push rod assembly. Through the push rod assembly, the pot seedlings can be pushed out of the seedling tray, improving work efficiency. And by adjusting the rotation speed of the push rod assembly, the time interval between the front and rear push-out of the pot seedlings by adjacent push rod assemblies can be correspondingly adjusted, realizing efficient and precise seedling picking operation. The taken-out pot seedlings can be orderly planted in the farmland, providing good conditions for the subsequent growth of crops and achieving the purposes of high quality, high yield, cost reduction and efficiency increase.

[0021] 2. The present invention provides a cam turnover continuous parallel push-out type seedling picking device with low seedling damage rate, stable and efficient operation, including a seedling tray conveying mechanism, a cam push-out seedling picking mechanism, a transmission system, a load-bearing bottom plate, etc.; The first seedling tray starts to move from the initial position, and the subsequent seedling trays follow the first seedling tray and sequentially pass through the seedling tray conveying mechanism in an orderly manner. The pot seedlings in the seedling tray are pushed out by the cam push-out seedling picking mechanism to complete the seedling picking operation. The empty pot seedling trays are pushed by the cam push rod seedling picking mechanism into the seedling tray recycling assembly and separated from the seedling tray conveying mechanism under the pushing of the subsequent seedling trays.

[0022] 3. The cam turnover continuous parallel push-out type seedling picking device disclosed in the present invention can realize mechanical seedling picking operation for pot seedlings of different crops, effectively reducing labor costs. And the cam turnover continuous parallel push-out type seedling picking device of the present invention has a simple structure, is easy to operate, and has reliable working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the seedling tray conveying mechanism.

[0026] Figure 3 It is a schematic structural diagram of the seedling tray initial positioning assembly.

[0027] Figure 4 It is an exploded structural diagram of the seedling tray initial positioning assembly.

[0028] Figure 5 It is a schematic structural diagram of the cam push-out seedling picking mechanism.

[0029] Figure 6 It is a schematic structural diagram of the main shaft assembly.

[0030] Figure 7 It is a schematic structural diagram of the parallel rotation assembly.

[0031] Figure 8 It is a structural schematic diagram of the ejector rod assembly.

[0032] Figure 9 It is a front view of the transmission system.

[0033] Among them, 1 - seedling tray conveying mechanism, 2 - cam ejecting and seedling taking mechanism, 3 - transmission system, 4 - load-bearing bottom plate, 5 - seedling tray conveying component, 6 - seedling tray recycling assembly, 7 - seedling tray initial positioning assembly, 8 - guiding bar, 9 - hanging support plate, 10 - positioning mounting seat, 11 - guiding slide rail, 12 - recycling plate, 13 - limiting plate, 14 - connecting plate, 15 - supporting bottom plate, 16 - front fastening pressure plate, 17 - rear supporting pressure plate, 18 - linear guide rail, 19 - positioning guide, 20 - tension spring, 21 - eccentric pin shaft, 22 - seedling tray baffle, 23 - positioning baffle, 24 - side wall plate of the mounting seat, 25 - cam groove wall plate, 26 - cam groove supporting wall plate, 27 - positioning mounting plate, 28 - ejector rod anti-reverse assembly, 29 - transmission shaft Ⅰ, 30 - transmission shaft Ⅱ, 31 - transmission gear Ⅰ, 32 - transmission gear Ⅱ, 33 - transmission gear Ⅲ, 34 - ejector rod assembly, 35 - main shaft assembly, 36 - parallel rotating assembly Ⅰ, 37 - parallel rotating assembly Ⅱ, 38 - crank connecting piece Ⅱ, 39 - anti-disengagement blocking piece, 40 - inclination adjusting piece, 41 - chute driving wheel Ⅰ, 42 - chute guiding wheel Ⅰ, 43 - Z-shaped connecting crankshaft Ⅰ, 44 - chute driving wheel Ⅱ, 45 - crank connecting piece Ⅰ, 46 - ejector rod straight shaft, 47 - lower push rod, 48 - ejector rod, 49 - torsion spring, 50 - pin shaft, 51 - connecting rod straight shaft, 52 - cam groove support piece, 53 - chute guiding wheel Ⅱ, 54 - Z-shaped connecting crankshaft Ⅱ. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Such as Figures 1 to 9As shown in the figure, the present invention provides a cam turnover continuous parallel ejection type seedling picking device, which includes a seedling tray conveying mechanism 1, a cam ejection seedling picking mechanism 2, a transmission system 3 and a load-bearing bottom plate 4. The cam ejection seedling picking mechanism 2 is arranged on the seedling tray conveying mechanism 1. The load-bearing bottom plate 4 is arranged at the bottom end of the seedling tray conveying mechanism 1. One end of the seedling tray conveying mechanism 1 is provided with a transmission system 3. The transmission system 3 is connected with the cam ejection seedling picking mechanism 2. The transmission system 3 is connected with the power input end to realize power input. The power input drives the transmission system 3 to operate, thereby driving the cam ejection seedling picking mechanism 2 to rotate. The pot seedlings are conveyed to the working position of the cam ejection seedling picking mechanism 2 along with the seedling tray via the seedling tray conveying mechanism 1. The cam ejection seedling picking mechanism 2 is used to eject the pot seedlings to realize the seedling picking function. The load-bearing bottom plate 4 is used to fixedly support the seedling picking device.

[0036] In this embodiment, the seedling tray conveying mechanism 1 includes a seedling tray conveying component 5, a seedling tray recycling component 6 and a positioning and mounting seat 10. The positioning and mounting seat 10 is arranged on the load-bearing bottom plate 4. The positioning and mounting seat 10 is arranged at both ends of the seedling tray conveying component 5 and the seedling tray recycling component 6. The seedling tray recycling component 6 is arranged between the seedling tray conveying component 5 and the load-bearing bottom plate 4.

[0037] In this embodiment, the seedling tray conveying component 5 includes a guiding strip 8, a hanging support plate 9, a seedling tray initial positioning component 7 and a guiding slide rail 11. The seedling tray initial positioning component 7 is arranged on the positioning and mounting seat 10. The positioning and mounting seats 10 are connected by two hanging support plates 9. The guiding strip 8 is arranged on the two hanging support plates 9. The bottom end of the guiding strip 8 is connected with the seedling tray recycling component 6 through the guiding slide rail 11. The guiding strip 8 is used to limit the movement of both sides of the seedling tray and guide the seedling tray to transport downward.

[0038] The seedling tray recycling component 6 includes a recycling plate 12, a limiting plate 13, a connecting plate 14 and a supporting bottom plate 15. The supporting bottom plate 15 is fixed above the load-bearing bottom plate 4. The limiting plate 13 is vertically fixed on both sides of the supporting bottom plate 15 and abuts against the positioning and mounting seats 10 on both sides respectively. The recycling plate 12 is vertically fixed in the middle of the supporting bottom plate 15. The connecting plate 14 is fixedly connected to the top end of the limiting plate 13. The connecting plate 14 is fixedly connected with the guiding slide rail 11. The cooperation of the recycling plate 12 and the guiding slide rail 11 can recycle the seedling tray. The connecting plate 14 can ensure the stability of the guiding slide rail 11.

[0039] In this embodiment, the initial positioning assembly 7 of the seedling tray includes a front fastening pressure plate 16, a rear support pressure plate 17, a linear guide rail 18, a positioning guide member 19, a tension spring 20, an eccentric pin shaft 21, a seedling tray baffle 22 and a positioning baffle 23. The front fastening pressure plate 16 and the rear support pressure plate 17 are fastened and connected to form a guide groove. A strip-shaped through hole is provided on each of the fastening pressure plate 16 and the rear support pressure plate 17. A positioning guide member 19 is arranged in the guide groove. The positioning guide member 19 is fixedly connected to the linear guide rail 18. Both sides of the positioning guide member 19 are respectively inserted into the strip-shaped through holes on the fastening pressure plate 16 and the rear support pressure plate 17, so as to realize the up-and-down sliding of the positioning guide member 19. A pin hole is provided at the bottom end of the positioning guide member 19. The pin hole at the bottom end of the positioning guide member 19 is fixedly connected with the seedling tray baffle 22 and the positioning baffle 23 through a flat key of the eccentric pin shaft 21. Under the action of the eccentric pin shaft 21, the three can rotate synchronously. One end of the eccentric pin shaft 21 away from the positioning guide member 19 is connected to the positioning guide member 19 through a tension spring 20. The tension spring 20 can quickly change the position state of the eccentric pin shaft 21 under the action of the ejector rod assembly 34. In the initial position, the seedling tray baffle 22 abuts against the end of the first seedling tray, and the positioning baffle 23 is in close contact with the ejector rod assembly 34. At this time, the first row of plug seedlings on the seedling tray are aligned with the ejector rod assembly 34 before the seedling taking mechanism starts to work, realizing the initial positioning of the first seedling tray. The seedling tray feeds downward along the slideway between the front fastening pressure plate 16 and the rear support pressure plate 17 under the limitation of the guide strip 8, realizing the conveying of the seedling tray.

[0040] In this embodiment, the positioning and mounting base 10 includes a mounting base side wall plate 24, a cam groove wall plate 25, a cam groove support wall plate 26, and a plurality of positioning and mounting plates 27. The mounting base side wall plate 24 and the plurality of positioning and mounting plates 27 respectively surround the cam groove wall plate 25 and the cam groove support wall plate 26 to form a parallel rotating cavity. The cam groove wall plate 25 and the cam groove support wall plate 26 are provided with cam grooves, and the cam grooves are used to abut against the cam ejecting and seedling-taking mechanism 2. The mounting base side wall plate 24 is connected to the seedling tray initial positioning assembly 7, and opening grooves are provided at the connection positions. Linear guides 18 are arranged in the opening grooves. An annular through hole is also provided on the mounting base side wall plate 24. The cam ejecting and seedling-taking mechanism 2 is arranged at the annular through hole of the mounting base side wall plate 24. Ejector rod anti-reverse assemblies 28 are arranged on the inner sides of both the cam groove wall plate 25 and the cam groove support wall plate 26. A cam groove support member 52 is arranged on the outer side of the cam groove support wall plate 26. Two grooves for placing the ejector rod anti-reverse assemblies 28 are also provided on one side of the edge of the annular through hole of the mounting base side wall plate 24 close to the cam ejecting and seedling-taking mechanism 2. A transmission shaft I 29 penetrates through the bottoms of the two positioning and mounting bases 10. The transmission shaft I 29 penetrates through the cam groove support member 52 on the outer sides of the cam groove wall plate 25 and the cam groove support wall plate 26. A transmission shaft II 30 is further arranged in the cam groove support wall plate 26 of the cam groove support member 52. The transmission shaft II 30 penetrates through the cam groove support member 52 and the cam groove support wall plate 26. Circular through holes are provided on both the cam groove wall plate 25 and the cam groove support wall plate 26, and the circular through holes are used to connect the cam ejecting and seedling-taking mechanism 2;

[0041] A transmission gear I 31 is fixedly arranged on the part of the shaft of the transmission shaft I 29 located inside the cam groove support wall plate 26 of the cam groove support member 52. A transmission gear II 32 is fixedly arranged on the part of the shaft of the transmission shaft II 30 located inside the cam groove support wall plate 26 of the cam groove support member 52. The transmission gear II 32 meshes with the transmission gear I 31. A transmission gear III 33 is fixedly arranged on the part of the shaft of the transmission shaft II 30 located inside the rotating cavity. The transmission gear III 33 is used to cooperate with the cam ejecting and seedling-taking mechanism 2; The above two groups of meshing gears form a two-stage deceleration structure. An external power source is connected to the transmission shaft I 29 to realize power input. The power is transmitted to the parallel rotating assembly II 37 through the two-stage deceleration structure, so that the cam ejecting and seedling-taking mechanism 2 performs a rotating motion to realize the seedling-taking operation.

[0042] In this embodiment, the cam ejection seedling removal mechanism 2 includes a push rod assembly 34, a main shaft assembly 35, a parallel rotary assembly I 36 and a parallel rotary assembly II 37, the parallel rotary assembly I 36 and the parallel rotary assembly II 37 are respectively arranged inside two parallel rotary cavities, the axial positions of the parallel rotary assembly I 36 and the parallel rotary assembly II 37 are connected through the main shaft assembly 35, multiple push rod assemblies 34 pass through the parallel rotary assembly I 36 and the parallel rotary assembly II 37 at a position away from the axial center, and the two ends of multiple push rod assemblies 34 respectively abut against the cam grooves on the cam groove wall plate 25 and the cam groove support wall plate 26; the push rod assembly 34 rotates around the main shaft assembly 35 along the cam groove with a certain cam trajectory under the drive of the parallel rotary assembly I 36 and the parallel rotary assembly II 37, and multiple groups of the push rod assemblies 34 successively eject the pot seedlings in the seedling tray at the working position during the rotational motion to realize the seedling removal function.

[0043] In this embodiment, the spindle assembly 35 includes a crank connection member II 38, an anti-slip stopper 39, a connecting rod straight shaft 51 and an inclination adjustment member 40. The connecting rod straight shaft 51 is provided with a crank connection member II 38 at both ends, and the crank connection member II 38 is provided with an anti-slip stopper 39. The crank connection member II 38 is embedded with an inclination adjustment member 40 at one end away from the anti-slip stopper 39. The inclination adjustment member 40 is provided with an oblique waist-shaped hole at one end away from the crank connection member II 38. The cam groove wall plate 25 and the cam groove support wall plate 26 are provided with a crank connection member II 38. A reverse waist-shaped hole is provided at the waist-shaped through hole, and one end of the two inclination adjusting members 40 are respectively fixed to the waist-shaped through holes fixed on the cam groove wall plate 25 and the cam groove supporting wall plate 26 through the oblique waist-shaped holes on the bolts; adjusting the angle between the inclination adjusting member 40 and the horizontal plane can adjust the angle between the crank connection member II and the horizontal plane, thereby adjusting the angle between the push rod assembly 34 and the bottom wall of the seedling tray on the seedling tray conveying member 5, so that the push rod assembly 34 can accurately push out the pot seedlings during the rotation process.

[0044] In this embodiment, the parallel rotary assembly I 36 includes a chute driving wheel I 41, a chute guiding wheel I 42, and a Z-shaped connecting crankshaft I 43. The chute driving wheel I 41 and the chute guiding wheel I 42 are arranged at both ends of the crank connecting member II 38. The edges of the chute driving wheel I 41 and the chute guiding wheel I 42 are connected to each other by the Z-shaped connecting crankshaft I 43. A plurality of waist-shaped guiding grooves are provided on both the chute driving wheel I 41 and the chute guiding wheel I 42. The parallel rotary assembly II 37 includes a chute driving wheel II 44, a chute guiding wheel II 53, and a Z-shaped connecting crankshaft II 54. The chute driving wheel II 44 and the chute guiding wheel II 53 are arranged at both ends of the crank connecting member II 38. The edges of the chute driving wheel II 44 and the chute guiding wheel II 53 are connected to each other by the Z-shaped connecting crankshaft II 54. A plurality of waist-shaped guiding grooves are provided on both the chute driving wheel II 44 and the chute guiding wheel II 53. The ejector rod assembly 34 passes through the waist-shaped guiding grooves. Among them, the chute driving wheel II 44 is a gear, and the chute driving wheel II 44 meshes with the transmission gear III 33. A keyway is provided on the connecting rod straight shaft 38. The chute driving wheel I 41 and the chute driving wheel II 44 are installed at both ends of the connecting rod straight shaft 38 through the keyway, so that the chute driving wheel I 41 and the chute driving wheel II 44 rotate with the same speed as the connecting rod straight shaft 38.

[0045] In this embodiment, the ejector rod assembly 34 includes a crank connecting member I 45, an ejector rod straight shaft 46, a lower push rod 47, and an ejector pin 48. Crank connecting members I 45 are provided at both ends of the ejector rod straight shaft 46. One ends of the two crank connecting members I 45 far from the center of the ejector rod straight shaft 46 are respectively arranged in the waist-shaped guiding grooves in the same direction of the parallel rotary assembly I 36 and the parallel rotary assembly II 37. A plurality of ejector pins 48 are arranged at the middle position of the axis of the ejector rod straight shaft 46. The ejector pins 48 are used to eject the plug seedlings. Lower push rods 47 are provided at the starting ends and the ending ends of the plurality of ejector pins 48. The lower push rods 47 are used to assist in positioning and pulling down the plug seedling tray. Under the action of the parallel rotary assembly I 36 and the parallel rotary assembly II 37, the adjacent two groups of the ejector rod assemblies 34 will maintain a constant distance in the vertical direction and drive the ejector rod assembly 34 to rotate, so as to realize the ejection of the plug seedlings. In addition, the constant distance is the same as the distance between two adjacent groups of plug seedlings on the seedling tray.

[0046] In this embodiment, the reverse-preventing component 28 of the ejector rod includes a torsion spring 49 and a pin shaft 50. The pin shaft 50 is fixed in the groove. The torsion spring 49 is sleeved on the pin shaft 50. The clamping arms on both sides of the torsion spring 49 are respectively in close contact with the two side walls of the groove. One clamping arm of the torsion spring 49 is tangent to the ejector rod assembly 34 at the initial position. The ejector rod straight shaft 46 overcomes the tendency of rotating around the axis under the action of the clamping arm, realizing a smooth transition and ensuring that the ejector rod assembly 34 always maintains a parallel state during the entire rotation process. After the clamping arm of the torsion spring 49 separates from the ejector rod straight shaft 46, it quickly rebounds to the initial position by relying on the torsion force and repeats the above steps.

[0047] In this embodiment, lubricating oil is applied to the shaft parts of the cam ejecting and seedling-taking mechanism 2 and the transmission system 3. The load-bearing bottom plate 4, the cam groove wall plate 25 and the positioning and mounting seat 10 are treated by painting to achieve the purpose of dust and rust prevention and service life extension.

[0048] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cam turnover continuous parallel ejecting seedling taking device, characterized in that, It includes a seedling tray conveying mechanism (1), a cam ejecting and seedling taking mechanism (2), a transmission system (3) and a load-bearing bottom plate (4). The cam ejecting and seedling taking mechanism (2) is arranged on the seedling tray conveying mechanism (1). The load-bearing bottom plate (4) is arranged at the bottom end of the seedling tray conveying mechanism (1). One end of the seedling tray conveying mechanism (1) is provided with a transmission system (3). The transmission system (3) is connected to the cam ejecting and seedling taking mechanism (2). The transmission system (3) is connected to the power input end to realize power input. The power input drives the transmission system (3) to operate, thereby driving the cam ejecting and seedling taking mechanism (2) to rotate. The pot seedlings are conveyed to the working position of the cam ejecting and seedling taking mechanism (2) along with the seedling tray by the seedling tray conveying mechanism (1). The cam ejecting and seedling taking mechanism (2) is used to eject the pot seedlings to realize the seedling taking function. The load-bearing bottom plate (4) is used to fixedly support the seedling taking device; The cam ejecting and seedling taking mechanism (2) includes a push rod assembly (34), a main shaft assembly (35), a parallel rotating assembly I (36) and a parallel rotating assembly II (37). The parallel rotating assembly I (36) and the parallel rotating assembly II (37) are respectively arranged inside two parallel rotating cavities. The axial positions of the parallel rotating assembly I (36) and the parallel rotating assembly II (37) are connected by the main shaft assembly (35). A plurality of the push rod assemblies (34) penetrate through the positions far from the axis of the parallel rotating assembly I (36) and the parallel rotating assembly II (37). Both ends of the plurality of push rod assemblies (34) are respectively abutted against the cam grooves on the cam groove wall plate (25) and the cam groove supporting wall plate (26); The main shaft assembly (35) includes a crank connecting piece II (38), an anti-disengagement stopper (39), a connecting rod straight shaft (51) and an inclination adjusting piece (40). Both ends of the connecting rod straight shaft (51) are provided with crank connecting pieces II (38). The crank connecting pieces II (38) are both provided with anti-disengagement stoppers (39). One end of the crank connecting piece II (38) far from the anti-disengagement stopper (39) is respectively fitted with an inclination adjusting piece (40). The end of the inclination adjusting piece (40) far from the crank connecting piece II (38) is provided with an obliquely elongated hole. Waist-shaped through holes are arranged on both the cam groove wall plate (25) and the cam groove supporting wall plate (26). The obliquely elongated holes on the two inclination adjusting pieces (40) are respectively fixed to the waist-shaped through holes on the cam groove wall plate (25) and the cam groove supporting wall plate (26) by bolts; The parallel rotating assembly I (36) includes a chute driving wheel I (41), a chute guiding wheel I (42) and a Z-shaped connecting crankshaft I (43). The chute driving wheel I (41) and the chute guiding wheel I (42) are arranged at both ends of the crank connecting piece II (38). The edges of the chute driving wheel I (41) and the chute guiding wheel I (42) are connected to each other by the Z-shaped connecting crankshaft I (43). A plurality of waist-shaped guiding grooves are arranged on both the chute driving wheel I (41) and the chute guiding wheel I (42); The parallel rotation assembly II (37) includes a chute driving wheel II (44), a chute guiding wheel II (53), and a Z-shaped connecting crankshaft II (54). The chute driving wheel II (44) and the chute guiding wheel II (53) are arranged at both ends of the crank connecting member II (38). The edges of the chute driving wheel II (44) and the chute guiding wheel II (53) are connected to each other through the Z-shaped connecting crankshaft II (54). A plurality of waist-shaped guiding grooves are provided on both the chute driving wheel II (44) and the chute guiding wheel II (53). The ejector rod assembly (34) passes through the waist-shaped guiding grooves. Among them, the chute driving wheel II (44) is a gear, and the chute driving wheel II (44) meshes with the transmission gear III (33); The ejector rod assembly (34) includes a crank connecting member I (45), an ejector rod straight shaft (46), a lower push rod (47), and an ejector pin (48). Crank connecting members I (45) are provided at both ends of the ejector rod straight shaft (46). One ends of the two crank connecting members I (45) far from the center of the ejector rod straight shaft (46) are respectively arranged in the waist-shaped guiding grooves in the same direction of the parallel rotation assembly I (36) and the parallel rotation assembly II (37). A plurality of ejector pins (48) are provided at the middle position of the ejector rod straight shaft (46). Lower push rods (47) are provided at the starting ends and the ending ends of the plurality of ejector pins (48).

2. The cam turnover continuous parallel ejecting seedling taking device according to claim 1, characterized in that: The seedling tray conveying mechanism (1) includes a seedling tray conveying component (5), a seedling tray recycling assembly (6), and a positioning mounting seat (10). The positioning mounting seat (10) is arranged on the load-bearing bottom plate (4). The positioning mounting seat (10) is arranged at both ends of the seedling tray conveying component (5) and the seedling tray recycling assembly (6). The seedling tray recycling assembly (6) is arranged between the seedling tray conveying component (5) and the load-bearing bottom plate (4).

3. The cam turnover continuous parallel ejecting seedling taking device according to claim 2, characterized in that: The seedling tray conveying component (5) includes a guiding strip (8), a hanging support plate (9), a seedling tray initial positioning assembly (7), and a guiding slide rail (11). The seedling tray initial positioning assembly (7) is arranged on the positioning mounting seat (10). The positioning mounting seats (10) are connected by two hanging support plates (9). A guiding strip (8) is arranged on the two hanging support plates (9). The bottom end of the guiding strip (8) is connected to the seedling tray recycling assembly (6) through the guiding slide rail (11); The seedling tray recycling assembly (6) includes a recycling plate (12), a limiting plate (13), a connecting plate (14), and a supporting bottom plate (15). The supporting bottom plate (15) is fixed above the load-bearing bottom plate (4). The limiting plate (13) is vertically fixed on both sides of the supporting bottom plate (15) and abuts against the positioning mounting seats (10) on both sides respectively. The recycling plate (12) is vertically fixed in the middle of the supporting bottom plate (15). The connecting plate (14) is fixedly connected to the top end of the limiting plate (13). The connecting plate (14) is fixedly connected to the guiding slide rail (11).

4. The cam turnover continuous parallel ejecting seedling taking device according to claim 3, characterized in that: The initial positioning assembly (7) of the seedling tray includes a front fastening pressure plate (16), a rear support pressure plate (17), a linear guide rail (18), a positioning guide (19), a tension spring (20), an eccentric pin shaft (21), a seedling tray baffle (22) and a positioning baffle (23). The front fastening pressure plate (16) and the rear support pressure plate (17) are fastened and connected to form a guiding straight groove. A strip-shaped through hole is provided on each of the front fastening pressure plate (16) and the rear support pressure plate (17). A positioning guide (19) is arranged in the guiding straight groove. The positioning guide (19) is fixedly connected to the linear guide rail (18). Both sides of the positioning guide (19) are respectively embedded in the strip-shaped through holes on the front fastening pressure plate (16) and the rear support pressure plate (17). A pin hole is provided at the bottom end of the positioning guide (19). The pin hole at the bottom end of the positioning guide (19) is fixedly connected with the seedling tray baffle (22) and the positioning baffle (23) through a flat key of the eccentric pin shaft (21). One end of the eccentric pin shaft (21) away from the positioning guide (19) is connected to the positioning guide (19) through a tension spring (20).

5. The cam turnover continuous parallel ejecting seedling taking device according to claim 4, characterized in that: The positioning and mounting seat (10) includes a mounting seat side wall plate (24), a cam groove wall plate (25), a cam groove support wall plate (26) and a plurality of positioning and mounting plates (27). The mounting seat side wall plate (24) and the plurality of positioning and mounting plates (27) respectively and the cam groove wall plate (25) and the cam groove support wall plate (26) surround to form a parallel rotating cavity. A cam groove is provided on the cam groove wall plate (25) and the cam groove support wall plate (26). The cam groove is used to abut against the cam ejecting and seedling taking mechanism (2). The mounting seat side wall plate (24) is connected to the initial positioning assembly (7) of the seedling tray, and an opening groove is provided at the connection part. A linear guide rail (18) is arranged in the opening groove. An annular through hole is further provided on the mounting seat side wall plate (24). The cam ejecting and seedling taking mechanism (2) is arranged at the annular through hole of the mounting seat side wall plate (24). A top rod anti-reverse assembly (28) is arranged on the inner sides of both the cam groove wall plate (25) and the cam groove support wall plate (26). A cam groove support (52) is arranged on the outer side of the cam groove support wall plate (26). Two grooves for placing the top rod anti-reverse assembly (28) are further provided on one side of the edge of the annular through hole of the mounting seat side wall plate (24) close to the cam ejecting and seedling taking mechanism (2). A transmission shaft I (29) is arranged through the bottom ends of the two positioning and mounting seats (10). The transmission shaft I (29) penetrates through the cam groove support (52) on the outer side of the cam groove support wall plate (26). A transmission shaft II (30) is further arranged in the cam groove support (52). The transmission shaft II (30) penetrates through the cam groove support (52) and the cam groove support wall plate (26). Circular through holes are provided on both the cam groove wall plate (25) and the cam groove support wall plate (26). The circular through holes are used to connect the cam ejecting and seedling taking mechanism (2); A transmission gear I (31) is fixedly arranged on a part of the shaft of the transmission shaft I (29) located inside the cam groove support (52). A transmission gear II (32) is fixedly arranged on a part of the shaft of the transmission shaft II (30) located inside the cam groove support (52). The transmission gear II (32) meshes with the transmission gear I (31). A transmission gear III (33) is fixedly arranged on a part of the shaft of the transmission shaft II (30) located inside the rotary cavity. The transmission gear III (33) is used to cooperate with the cam ejecting and seedling taking mechanism (2).

6. The cam turnover continuous parallel ejecting seedling taking device according to claim 5, characterized in that: The ejector rod anti-reverse assembly (28) includes a torsion spring (49) and a pin shaft (50). The pin shaft (50) is fixed in the groove. The torsion spring (49) is sleeved on the pin shaft (50). The clamping arms on both sides of the torsion spring (49) are respectively close to the two side walls of the groove. One clamping arm of the torsion spring (49) is tangent to the ejector rod assembly (34) in the initial position.

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