A large-grain seed positioning and directional seeding device and method

Abstract

The application discloses a large-grain seed positioning and directional seeding device and method, and relates to the technical field of facility seedling precision seeding machinery, wherein the large-grain seed positioning and directional seeding device comprises a rack, a quantitative seed supply mechanism, a seed scraping mechanism, a direction adjusting mechanism, a seed throwing mechanism and a plug tray conveying mechanism; the quantitative seed supply mechanism is used for quantitatively supplementing seeds to the seed scraping mechanism; the seed scraping mechanism is used for pushing the quantitative seeds so that the seeds quickly fall into positioning type holes of the direction adjusting mechanism, and the arrangement, positioning and filling of the seeds are realized; the direction adjusting mechanism is used for simultaneously adjusting the directions of the seeds falling into the positioning type holes, so that the bud mouths of the seeds are kept consistent with the long axis directions; the seed throwing mechanism synchronously sucks a group of positioning and directional seeds from the positioning type holes of the direction adjusting mechanism and throws the seeds into corresponding hole holes in the plug tray. The application can realize the rapid arrangement, positioning and accurate bud mouth direction adjusting of large-grain seeds.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of facility seedling precision seeding machinery, in particular to a large-grain seed positioning and directional seeding device, and a large-grain seed positioning and directional seeding method. BACKGROUND

[0002] When large-grain seeds such as pumpkin are planted in a plug tray, the seed hilum position is placed in the center of the hole (i.e., the seed is positioned), and the seed hilum is arranged in the same direction as the long axis (i.e., the seed is oriented), which is conducive to the seedling stem being located in the center of the hole, fully absorbing light, and the cotyledon direction being uniform, avoiding mutual shading between cotyledons, and providing uniform and standardized seedlings for mechanized grafting and transplanting operations. However, there is currently no practical large-grain seed positioning and directional seeding equipment, and manually placing each seed in the hole of the plug tray is labor-intensive, low in production efficiency, and high in labor cost.

[0003] The mechanical device for positioning and directional seeding of large-grain seeds mainly includes seed arrangement and positioning, seed hilum orientation, and seed dropping functions and structure modules. For example, the application number 201410552423.4 "Directional positioning seeding machine" uses a movable rotating cylinder with directional seed holes to lift the seeds from the seed box, adjusts the direction of the lifted seed hilum to be consistent based on visual detection results, and then drops the oriented seed into the hole through a pneumatic seed dropping mechanism. The application number 201810431651.4 "Pumpkin seed distance directional seed arrangement device and distance and directional method" uses a negative pressure seed arrangement disc to adsorb seeds, and when the adsorbed seeds collide with the guide plate, if the head with a smaller arc is oriented in the same direction, the seed head will be stopped by the directional groove, the seed arrangement disc continues to rotate, and the pumpkin seed rotates under the action of negative pressure air suction to complete the head and tail direction adjustment, and then the seed slides into the plug tray along the seed guide pipe. The application number 201811636830.8 "Seed directional sorting device and its use method" lifts the seeds from the seed box and then makes them fall onto the seed directional sorting mechanism, which is provided with two parallel slides with opposite vibration directions and inclination angles. The seeds are arranged in the first level slide according to the long axis direction, and finally fall into the receiving block, while the remaining seeds fall back into the seed box from the second level slide, thereby realizing single-column sorting of the long axis direction or the short axis direction. The application number 202010567377.0 "Large-grain seed directional positioning precision seeding device" uses a groove wheel and a seed guide pipe to complete the seed supply and dropping, and according to the fact that large-grain seeds are flat and the smoothness of the head and tail ends is different, the seed is guided by positive pressure air to fall in the same direction of the head and tail, thereby realizing orientation.

[0004] The above-mentioned large-grain seed positioning and directional sowing device has the following problems during actual use: the bud orientation information is detected by machine vision, and each seed in an opposite direction is rotated and adjusted by the driving component. Many adjustment drive control elements need to be set, and the overall structure is complex and the cost is high; there are certain differences in the shape and size of large-grain seeds. The use of groove adjustment or positive pressure air blowing is prone to problems of seed jamming or low adjustment accuracy; the seed supply method of using vibration to stimulate the seeds to move in the same direction is restricted by the poor fluidity of large flat seeds, and the seed supply efficiency is low. Summary of the Invention

[0005] The present application aims to solve, at least to a certain extent, one of the aforementioned technical problems in the prior art. To this end, the present application provides a large seed positioning and directional sowing device that can effectively achieve rapid arrangement and positioning of large seeds and precise bud orientation, with the advantages of low cost and high operating efficiency.

[0006] The embodiment of the present application also provides a method for positioning and directional sowing of large seeds using the above-mentioned device.

[0007] According to an embodiment of the first aspect of the present application, a large-grain seed positioning and directional sowing device is provided, comprising a frame, a quantitative seed supply mechanism, a seed scraping mechanism, a direction adjustment mechanism, a seed throwing mechanism, and a plug tray conveying mechanism; the plug tray conveying mechanism is mounted on the frame, the seed throwing mechanism spans above the plug tray conveying mechanism and the direction adjustment mechanism, the quantitative seed supply mechanism, the seed scraping mechanism, and the direction adjustment mechanism are arranged on one side of the plug tray conveying mechanism, and the quantitative seed supply mechanism and the seed scraping mechanism are located above the direction adjustment mechanism; the plug tray conveying mechanism is provided with a plug tray having a plurality of groups of plug holes, the direction adjustment mechanism comprises a seed filling plate, and the seed filling plate is provided with at least one group of positioning holes according to the specifications of the plug tray;

[0008] The quantitative seed supply mechanism is used to provide quantitative seeding to the seed scraping mechanism;

[0009] The scraping mechanism includes a scraper assembly that can make a reciprocating linear motion on the upper surface of the seed filling plate. The scraper assembly receives the seeds put in by the quantitative seed supply mechanism. The scraper assembly pushes the quantitative seeds during the linear motion, so that the seeds quickly fall into a group of positioning holes of the adjustment mechanism, thereby realizing the arrangement, positioning and filling of the seeds.

[0010] The orientation mechanism is used for adjusting the orientation of the seeds falling into each positioning hole, so that the sprout of each seed points in the same direction as the long axis direction, the positioning hole comprises a seed guiding cone hole for guiding the seed to fall into and an ellipsoidal hole for restricting the long axis direction of the seed, the long axis direction of the positioning hole is arranged in the front-back direction, the seed guiding cone hole and the ellipsoidal hole are arranged in the up-down direction and are provided with a stepped hole therebetween, the front side of the stepped hole is provided with a directional boss, the directional boss is raised from the middle position of the positioning hole to the front end of the long axis direction, the seed falling into the positioning hole has a positive positioning state and a reverse positioning state, in the positive positioning state, the seed falls into the ellipsoidal hole and the sprout of the seed is away from the directional boss, in the reverse positioning state, the seed falls into the ellipsoidal hole and the sprout of the seed falls above the directional boss, the directional boss is provided with a blowing hole for blowing air to the position of the sprout of the seed, so that the seed is oriented, and the seed in the reverse positioning state is adjusted to the positive positioning state.

[0011] The seed throwing mechanism is used for synchronously sucking a group of positioning and oriented seeds from the positioning hole of the orientation mechanism and throwing the seeds into the corresponding hole hole of the hole disc.

[0012] The hole disc conveying mechanism is used for controlling the movement of the hole disc.

[0013] According to the embodiment of the first aspect of the application, the orientation mechanism further comprises a vibrator fixed on the rack, the seed filling plate is directly or indirectly mounted on the vibrator, the vibrator is a linear vibrator, and the feeding direction of the vibrator is arranged forward along the long axis direction of the positioning hole, so that the sprout of the seed in the reverse positioning state is gradually lifted by the positioning boss, and the sprout of the seed falls above the air blowing hole.

[0014] According to the embodiment of the first aspect of the application, a directional flow distribution plate is arranged between the seed filling plate and the vibrator, the directional flow distribution plate is mounted on the vibrator, the directional flow distribution plate is internally provided with an air blowing flow channel, the seed filling plate is mounted on the directional flow distribution plate, and the air blowing flow channel is in communication with each air blowing hole to provide a positive pressure air flow to each air blowing hole.

[0015] According to the embodiment of the first aspect of the application, after the air blowing hole is connected to the positive pressure air flow, a positive pressure air flow field is formed above the air blowing hole, and the upper part of the air blowing hole is a conical hole with a gradually expanding hole diameter from bottom to top, so that the action area of the positive pressure air flow field extends radially outward with the increase of the height.

[0016] According to the embodiment of the first aspect of the application, the directional boss is gradually raised from the middle part of the positioning hole to the front end of the long axis direction, and an air blowing platform is arranged at the end of the long axis direction, the air blowing platform is flat, and the air blowing hole is arranged on the air blowing platform.

[0017] According to the embodiment of the first aspect of the present application, the ration seed supply mechanism comprises an open-top seed tank, an outer groove wheel arranged in the seed tank, a first driving assembly for driving the rotation of the outer groove wheel, a seed guide plate arranged below the seed tank, and a seed storage plate arranged on one side below the seed guide plate. The outer groove wheel has circumferentially distributed grooves for taking out the seeds in the seed tank and dropping them onto the seed guide plate. The first driving assembly comprises a first motor mounted on the seed tank, and a rotating shaft driven by the first motor. The outer groove wheel is mounted on the rotating shaft, and the rotating shaft is connected with the driving shaft of the first motor through a shaft coupling. A brush is mounted above the side surface of the outer groove wheel on the seed tank to remove excess seeds.

[0018] According to the embodiment of the first aspect of the present application, the middle part of the seed storage plate is hollow, the seed filling plate is mounted at the hollow position of the seed storage plate, the upper surface of the seed storage plate is flush with the upper surface of the seed filling plate, and the seed storage plate and the seed filling plate are gap-fitted.

[0019] According to the embodiment of the first aspect of the present application, the seed scraping mechanism comprises a seed scraping moving assembly mounted on the rack and a seed scraping bracket driven by the seed scraping moving assembly to move back and forth in a straight line. The seed scraping moving assembly is mounted on the rack, and the seed scraping assembly is mounted on the seed scraping bracket. The seed scraping assembly comprises two soft scraping plates, and a seed receiving space is formed between the two soft scraping plates to receive the seeds dropped by the seed guide plate. The bottom of the soft scraping plate abuts against the surface of the seed storage plate or the surface of the seed filling plate, so that the soft scraping plate can scrape the seeds falling into the seed receiving space into the positioning holes of the seed filling plate during the straight-line movement, thereby achieving the arrangement and positioning of large seeds.

[0020] According to the embodiment of the first aspect of the present application, the plug tray conveying mechanism comprises a conveying belt assembly for conveying the plug tray and a second motor for driving the movement of the conveying belt assembly. The plug tray conveying mechanism further comprises a plug tray positioning sensor for detecting the position signal of the plug tray, thereby controlling the operation of the second motor.

[0021] According to the embodiment of the second aspect of the present application, a large-seed positioning and directional seeding method is provided, which uses the large-seed positioning and directional seeding device of the first aspect of the present application, and comprises the following steps:

[0022] The plug tray conveying mechanism conveys the plug tray to the seeding position;

[0023] The ration seed supply mechanism feeds the ration seeds to the seed scraping assembly of the seed scraping mechanism. During the straight-line movement of the seed scraping assembly, the seeds flow through the seed filling plate of the directional adjusting mechanism and are filled into the positioning holes.

[0024] The positioning hole seed realizes long axis orientation and bud opening orientation under the action of vibration, directional boss and positive pressure air blowing in the hole.

[0025] Based on the above technical scheme, the embodiments of the present application have at least the following beneficial effects:

[0026] (1) The quantitative seed feeding mechanism is used to feed the quantitative seed to the scraper assembly, avoiding the problems of seed jamming due to excessive amount or seed missing due to insufficient amount in the seed filling process, and improving the accuracy of single seed filling.

[0027] (2) The seed scraping mechanism is used to make the seed flow and fill into the positioning hole quickly, improving the operation efficiency of single seed filling.

[0028] (3) For the seed with the bud opening direction consistent with the feeding direction in the positioning hole, i.e. the seed in the reverse positioning state, the orientation mechanism utilizes the physical characteristics that the center of gravity of the large seed is close to the tail to make the seed turn over in the ellipsoidal hole to realize the bud opening orientation, without the need to use visual detection of the seed bud opening direction to mechanically orient the seed, having the advantages of simple structure and low cost.

[0029] (4) The seed falling into the positioning hole realizes long axis orientation and bud opening orientation under the action of vibration, directional boss and positive pressure air blowing in the hole, and has the advantages of strong adaptability to large seeds of the same variety and different sizes, no seed jamming and seed damage, and high efficiency of bud opening orientation.

[0030] (5) For large seeds of different varieties, the positioning hole of the seed filling plate can be designed according to the size characteristics of the seeds, having the advantage of strong adaptability to the positioning and orientation seeding requirements of large seeds of different varieties. BRIEF DESCRIPTION OF DRAWINGS

[0031] The present application will be further described below in combination with the drawings and embodiments;

[0032] Figure 1 is a schematic diagram of the overall structure of the large seed positioning and orientation seeding device of the embodiments of the present application;

[0033] Figure 2 is a schematic diagram of the orientation mechanism in the embodiments of the present application;

[0034] Figure 3 is a sectional view of the orientation mechanism in the embodiments of the present application;

[0035] Figure 4 is Figure 2 is a local enlarged view of the A ring in

[0036] Figure 5 is a sectional view of a single positioning hole on the seed filling plate in the embodiments of the present application;

[0037] Figure 6 is a plan view of a single positioning hole on the seed filling plate in this embodiment;

[0038] Figure 7 is a structural schematic diagram of the seed filling plate in this embodiment;

[0039] Figure 8 is Figure 7 is a partial enlarged view of the B ring in which the seed is shown in a forward positioning state;

[0040] Figure 9 is Figure 7 is a partial enlarged view of the C ring in which the seed is shown in a reverse positioning state;

[0041] Figure 10 is a structural schematic diagram of the quantitative seed supply mechanism in this embodiment;

[0042] Figure 11 is a structural schematic diagram of the seed scraping mechanism in this embodiment;

[0043] Figure 12 is a structural schematic diagram of the seed dropping mechanism in this embodiment;

[0044] Figure 13 is a sectional view of the seed suction and discharge assembly in this embodiment.

[0045] Reference signs: frame 100;

[0046] Quantitative seed supply mechanism 200, seed box 210, first motor 221, shaft coupling 222, rotating shaft 223, outer groove wheel 231, brush 241, seed guide plate 251, seed storage plate 261, surrounding plate 262;

[0047] Seed scraping mechanism 300, seed scraping moving assembly 310, scraper support 321, soft scraper 331;

[0048] Direction adjusting mechanism 400, seed filling plate 411, positioning hole 412, seed guide conical hole 4121, ellipsoidal hole 4122, stepped hole 4123, directional boss 4124, air blowing hole 4125, direction adjusting flow distribution plate 421, air blowing flow channel 422, vibrator 431;

[0049] Seed dropping mechanism 500, horizontal moving assembly 510, lifting assembly 520, seed suction and discharge assembly 530, support plate 531, air path flow distribution plate 532, suction needle 533;

[0050] Hole disc conveying mechanism 600, second motor 611, conveying belt assembly 620, hole disc positioning sensor 631;

[0051] Hole disc 710, hole 720;

[0052] Seed 800. DETAILED DESCRIPTION

[0053] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways without the specific details, and it is understood that similar improvements and modifications can be made thereto without departing from the scope of the present application. It is also to be understood that the terminology used herein is for the purpose of describing the present application only and is not intended to be limiting.

[0054] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are intended to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In addition, the terms "first", "second", "third", etc. are used only for the purpose of description and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0059] The following refers to Figures 1 to 13 The embodiment describes a large-grain seed positioning and directional sowing device, which comprises a frame 100, a quantitative seed supply mechanism 200, a seed scraping mechanism 300, a direction adjusting mechanism 400, a seed throwing mechanism 500 and a plug tray conveying mechanism 600.

[0060] As shown in Figure 1 The plug tray conveying mechanism 600 is installed on the frame 100, the seed throwing mechanism 500 is transversely arranged above the plug tray conveying mechanism 600 and the direction adjusting mechanism 400, the quantitative seed supply mechanism 200, the seed scraping mechanism 300 and the direction adjusting mechanism 400 are arranged on one side of the plug tray conveying mechanism 600, and the quantitative seed supply mechanism 200 and the seed scraping mechanism 300 are arranged above the direction adjusting mechanism 400.

[0061] As shown in Figure 1 The plug tray conveying mechanism 600 is provided with a plug tray 710, and the plug tray conveying mechanism 600 is used to control the movement of the plug tray 710.

[0062] The plug tray 710 has a plurality of groups of plug holes 720. Referring to Figures 1 to 3The orientation adjusting mechanism 400 includes a seed filling plate 411 provided with at least one set of positioning holes 412 according to the size of the plug. The large seed positioning and orientation sowing device of the embodiment is supplemented with seeds quantitatively by the quantitative seed supply mechanism 200 to the seed scraping mechanism 300. The seed scraping mechanism 300 is used to push the quantitative seeds to make the seeds quickly fall into the set of positioning holes 412 of the orientation adjusting mechanism 400 to realize the arrangement, positioning and filling of the seeds. The orientation adjusting mechanism 400 is used to adjust the orientation of the seeds falling into each positioning hole 412 to make the sprout of each seed keep consistent with the direction of the long axis. The seed throwing mechanism 500 is used to synchronously suck a set of positioning and oriented seeds from the positioning hole 412 of the orientation adjusting mechanism 400 and throw the seeds into the corresponding hole 720 in the plug 710.

[0063] The quantitative seed supply mechanism 200 is installed on one side of the frame 100 and is used to quantitatively supplement the seeds to the seed scraping mechanism 300. Specifically, referring to Figure 10 , the quantitative seed supply mechanism 200 includes an open-top seed box 210, an outer groove wheel 231 arranged in the seed box 210, a first driving assembly for driving the outer groove wheel 231 to rotate, a seed guide plate 251 arranged below the seed box 210, and a seed storage plate 261 located on one side below the seed guide plate 251. The first driving assembly includes a first motor 221 installed on the seed box 210, a rotating shaft 223 driven by the first motor 221, and the outer groove wheel 231 installed on the rotating shaft 223. The rotating shaft 223 is connected with the driving shaft of the first motor 221 through a shaft coupling 222. It can be understood that the first motor 221 drives the outer groove wheel 231 to rotate through the rotating shaft 223. The outer groove wheel 231 has circumferentially distributed grooves for controlling the quantitative seeds. The outer groove wheel 231 rotates to make the seeds in each groove fall onto the seed guide plate 251. The outer groove wheel 231 has circumferentially distributed grooves to realize the quantitative taking out of the seeds in the seed box 210 and falling onto the seed guide plate 251. The seed guide plate 251 is arranged obliquely, and the seeds on the seed guide plate 251 fall onto the seed storage plate 261. The seed box 210 is provided with a brush 241 above the side surface of the outer groove wheel 231 to remove the excess seeds.

[0064] In combination with Figure 1 and Figure 10 , the middle part of the seed storage plate 261 is hollow, the seed filling plate 411 is installed at the hollow position of the seed storage plate 261, the upper surface of the seed storage plate 261 is flush with the upper surface of the seed filling plate 411, and the seed storage plate 261 and the seed filling plate 411 are gap-fitted. As shown in Figure 10 , the seed storage plate 261 is provided with a surrounding plate 262 around the periphery, and Figure 1 the surrounding plate 262 is not shown.

[0065] In combination with Figure 1The scraping seed mechanism 300 includes a scraping plate assembly capable of reciprocating linearly on the surface of the filling plate 411, the scraping plate assembly 300 receives the seeds fed by the quantitative seed feeding mechanism 200, and pushes the seeds to quickly fall into a group of positioning type holes 412 of the direction adjusting mechanism 400 during the linear motion, so as to realize the arrangement, positioning and filling of the seeds.

[0066] Specifically, in combination with Figure 11 , the scraping seed mechanism 300 includes a scraping seed moving assembly 310 installed on the machine frame 100 and a scraping plate support 321 driven by the scraping seed moving assembly 310 to reciprocate linearly, the scraping seed moving assembly 310 is installed on the machine frame 100, the scraping plate assembly is installed on the scraping plate support 321, the scraping plate assembly includes two soft scraping plates 331, a seed receiving space is formed between the two soft scraping plates 331 to receive the seeds falling from the seed guide plate 251, and the soft scraping plates 331 are capable of scraping the seeds falling into the seed receiving space into the positioning type holes 412 of the filling plate 411 during the linear motion. Figure 1 As can be seen from the figure, the seeds fall from the seed guide plate 251 into the seed receiving space. In this embodiment, the scraping seed moving assembly 310 adopts a linear cylinder assembly or a linear motor assembly, and the scraping plate support 321 is installed on the moving slider of the linear cylinder assembly or the linear motor assembly. The linear cylinder assembly and the linear motor assembly are prior art, and the specific structure will not be described here, and those skilled in the art can select appropriate specifications. Of course, in other embodiments, the scraping seed moving assembly 310 can adopt other linear driving assemblies, such as a motor cooperating with a gear and rack transmission mechanism. It can be understood that the bottom of the soft scraping plate 331 abuts against the surface of the seed storage plate 261 or the surface of the filling plate 411, and the soft scraping plate 331 scrapes the seeds falling into the seed receiving space into the positioning type holes 412 of the filling plate 411 during the linear motion, so as to realize the arrangement, positioning and filling of the large seeds. In this embodiment, the soft scraping plate 331 is made of soft material such as rubber, so as to ensure that the scraping plate 331 closely abuts against the seed storage plate 261 or the filling plate 411 during relative movement and has a certain softness, thereby preventing the seeds from being scratched.

[0067] Referring to Figures 2 to 9 , the direction adjusting mechanism 400 is used for adjusting the direction of the seeds falling into the positioning type holes 412, so that the sprout openings of the seeds point in the same direction as the long axis direction.

[0068] As shown in Figures 4 to 6 , the positioning type hole 412 includes a seed guide cone hole 4121 for guiding the seeds to fall in and an ellipsoidal hole 4122 for restricting the long axis direction of the seeds, the long axis direction of the positioning type hole 412 is arranged along the front-back direction, the seed guide cone hole 4121 and the ellipsoidal hole 4122 are arranged above and below and a stepped hole 4123 is arranged between the two, the front side of the stepped hole 4123 is provided with a directional boss 4124, and the directional boss 4124 is raised from the middle position of the positioning type hole 412 to the front end of the long axis direction. The long axis direction of the positioning type hole 412 can be understood in combination with Figure 2 , Figure 5 .

[0069] Two soft scrapers 331 receive the seeds dropped by the seed guide plate 251 from one side of the seed storage plate 261, and then push the seeds to the other side of the seed storage plate 261. When the seeds flow through the positioning holes 412 on the seed filling plate 411, the seeds are filled into the positioning holes 412 under the action of the soft scrapers 331 and gravity.

[0070] In this embodiment, under the pushing of the seed scraping mechanism 300, the seeds dropped into the positioning holes 412 can be positioned and arranged by the guide cone holes 4121 and the ellipsoidal holes 4122. However, when the seeds drop into the positioning holes 412, the long axis direction is positioned, but the germination holes of the seeds are not consistent. In combination with Figures 7 to 9 It is understood that the seeds dropped into the positioning holes 412 have a forward positioning state and a reverse positioning state. The forward positioning state is that the seed 800 drops into the ellipsoidal hole 4122, and the germination hole of the seed 800 is away from the directional boss 4124, as shown in Figure 8 The reverse positioning state is that the seed 800 drops into the ellipsoidal hole 4122, and the germination hole of the seed 800 is above the directional boss 4124, as shown in Figure 9 .

[0071] Referring to Figures 4 to 6 , the directional boss 4124 is provided with a gas blowing hole 4125 to blow gas to the position of the seed germination hole to adjust the direction of the seed, so that the seed in the reverse positioning state is adjusted to the forward positioning state.

[0072] Referring to Figure 2 and Figure 3 , the direction adjusting mechanism 400 further includes a vibrator 431 fixed on the frame 100, and the seed filling plate 411 is directly or indirectly mounted on the vibrator 431. The vibrator 431 is a linear vibrator, and the feeding direction of the vibrator 431 is arranged forward along the long axis direction of the positioning hole 412, so that when the seed is in the reverse positioning state, the germination hole of the seed is gradually lifted by the directional boss 4124, so that the seed germination hole falls above the gas blowing hole 4125. It is described that the vibration direction of the vibrator 431 and the long axis direction of the positioning hole 412 have an included angle. During the vibration of the vibrator 431, a component force along the long axis direction of the positioning hole 412 and a component force in the up-down direction are generated on the seed filling plate 411. Under the vibration excitation of the vibrator 431, the seed filling plate 411 generates a forward force on the seed, that is, the feeding direction of the vibrator 431 on the seed is forward. On the one hand, under the vibration excitation of the vibrator 431, the seed flow passes through the positioning hole 412 on the seed filling plate 411, and is more easily dropped into the ellipsoidal hole 4122 to realize the preliminary orientation of the seed along the long axis; on the other hand, referring to Figure 3 and Figure 9When the seed is in the reverse positioning state, the seed moves forward under the vibration excitation, the seed bud mouth is gradually lifted by the positioning boss 4124, and the bud mouth will eventually fall above the air blowing hole 4125.

[0073] In addition, a directional diverter plate 421 is provided between the seed filling plate 411 and the vibrator 431. The directional diverter plate 421 is installed on the vibrator 431. An air blowing channel 422 is provided inside the directional diverter plate 421. The seed filling plate 411 is installed on the directional diverter plate 421. The air blowing channel 422 is connected to each air blowing hole 4125 to provide positive pressure airflow to each air blowing hole 4125.

[0074] Reference Figure 9 At this time, the seed 800 is in the reverse positioning state, and the bud of the seed 800 falls above the directional boss 4124. Air is blown toward the bud position of the seed 800 through the air blowing hole 4125, generating positive pressure force on the bud position of the seed 800. The seed 800 in the positioning hole 412 is oriented along its long axis and adjusted in direction of its bud under the action of the positive pressure force in the directional boss 4124 and the air blowing hole 4125, thereby adjusting the seed 800 in the reverse positioning state to the forward positioning state. Figure 8 In some embodiments, in addition to blowing air toward the seed bud opening through the air blowing hole 4125, the vibrator 431 is also operated simultaneously. The seeds dropped into the positioning hole 412 are oriented along their long axes and oriented toward the bud opening under the action of vibration, the directional boss 4124, and the positive pressure in the air blowing hole 4125. This allows for strong adaptability to large seeds of the same variety but varying dimensions, prevents seed jamming and damage, and allows for efficient bud opening orientation.

[0075] After the positive pressure airflow is introduced into the air blowing hole 4125, a positive pressure airflow field is formed above the air blowing hole 4125. In some embodiments, referring to Figure 5 The upper portion of the air blowing hole 4125 is a conical hole that gradually expands from bottom to top. The positive pressure air flow field above the air blowing hole 4125 has an action area that radially extends outward as the height increases, thus expanding the action area of ​​the positive pressure air flow field. Figures 4 to 6 The directional boss 4124 is gradually raised from the middle of the positioning hole 412 to the front end in the long axis direction, and an air blowing platform is set at the end in the long axis direction. The air blowing platform is set flat. The flat setting means that the air blowing platform at the end of the directional boss 4124 in the long axis direction is not raised, and the air blowing hole 4125 is set on the air blowing platform. Figure 9 As shown, when the seed is in the reverse positioning state, the bud of the seed falls above the directional boss 4124, and the bud Figure 5For better understanding, the air blowing platform is flat, so the air blowing hole top opening position has a certain height difference with the seed sprout opening. The positive pressure air flow field of the air blowing hole 4125 can cover a larger air flow radius at the height position of the sprout opening. Even if the sprout opening does not fall exactly above the air blowing hole 4125, the positive pressure air flow field of the air blowing hole 4125 can also cover the sprout opening position of the seed 800, and can generate positive pressure air on the sprout opening position of the seed 800. It should be noted that in the present embodiment, the seed sprout opening is in the action area of the positive pressure air flow field, which can be understood as that the seed sprout opening is located above the air blowing hole 4125.

[0076] With reference to Figure 12 and 13 The seed feeding mechanism 500 includes a horizontal moving assembly 510, a lifting assembly 520, and a seed suction and discharge assembly 530. The horizontal moving assembly 510 is fixedly connected with the rack 100. The horizontal moving assembly 510 and the lifting assembly 520 can be linear cylinder assemblies or linear motor assemblies. The lifting assembly 520 is installed on the moving slider of the horizontal moving assembly 510. The seed suction and discharge assembly 530 is installed on the moving slider of the lifting assembly 520. The linear cylinder assembly and the linear motor assembly are prior art, and the specific structure will not be described herein. A person skilled in the art can select a suitable specification.

[0077] The moving slider of the lifting assembly 520 is fixed with the seed suction and discharge assembly 530, and is used to drive the seed suction and discharge assembly 530 to move up and down. The seed suction and discharge assembly 530 includes a support plate 531, a gas path shunt plate 532, and a plurality of suction pins 533. The support plate 531 is fixed on the moving slider of the lifting assembly 520. The positions of the suction pins 533 correspond to the positions of the positioning holes 412 of the seed filling plate 411 of the seed direction adjusting mechanism 400 one by one. The suction pins 533 are in communication with the inside of the gas path shunt plate 532. The gas path shunt plate 532 provides the negative pressure air flow required for suction of the seeds and the positive pressure air flow required for feeding of the seeds. The seed feeding mechanism 500 moves the seed suction and discharge assembly 530 by driving the horizontal moving assembly 510 and the lifting assembly 520, so as to realize suction of the seeds from the positioning holes 412 of the seed filling plate 411 and then move to the corresponding position of the plug tray 710 for positive pressure feeding of the seeds.

[0078] The plug tray conveying mechanism 600 includes a conveying belt assembly 620 for conveying the plug tray 710 and a second motor 611 for driving the conveying belt assembly 620 to move. Specifically, the conveying belt assembly 620 includes a driving pulley, a conveying belt, and a driven pulley. The driving pulley is connected with the second motor 611, and the plug tray 710 is conveyed by the conveying belt. Those skilled in the art can refer to Figure 1 for understanding the structure of the conveying belt assembly 620. Since the driving and running principle of the conveying belt is a conventional technology, it will not be described herein.

[0079] The tray conveying mechanism 600 further comprises a tray positioning sensor 631 to detect the position signal of the tray 710, so as to control the operation of the second motor 611. The tray positioning sensor 631 is installed on the side of the frame 100, when the tray positioning sensor 631 detects the position signal of the tray 710, the conveying belt assembly 620 stops moving, after the tray 710 is completed, the conveying belt assembly 620 operates again to perform the operation of the next tray.

[0080] The embodiment also shows a large-grain seed positioning and directional seeding method, using the large-grain seed positioning and directional seeding device, comprising the following steps:

[0081] S1, the tray conveying mechanism 600 transports the tray 710 to the seeding position; the quantitative seed supply mechanism 200 inputs the quantitative seeds to the scraper assembly of the scraping mechanism 300.

[0082] Specifically, the tray 710 is transported by the tray conveying mechanism 600 to the seeding position corresponding to the positioning type hole 412 of the direction adjusting mechanism 400. At the same time, the two soft scrapers 331 of the scraping mechanism 300 are moved to above the seed storage plate 261 of the quantitative seed supply mechanism 200, that is, below the seed guide plate 251, and the quantitative seeds are input between the two soft scrapers 331 by the quantitative seed supply mechanism 200. At the same time, the suction and discharge seed assembly 530 is moved to directly above the direction adjusting mechanism 400 by the horizontal moving assembly 510 and the lifting assembly 520 of the seeding mechanism 300, so that the position of the suction needle 533 corresponds to the position of the positioning type hole 412 of the direction adjusting mechanism 400.

[0083] S2, the seed flows through the seed filling plate 411 of the direction adjusting mechanism 400 during the linear motion of the scraper assembly, and the single seeds are filled into the positioning type hole 412.

[0084] Specifically, the two soft scrapers 331 of the scraper assembly are pushed from one side of the seed storage plate 261 to the other side of the seed storage plate 261 by the scraping moving assembly 310, and when the seeds flow through the positioning type hole 412 on the seed filling plate 411, the seeds are filled into each positioning type hole 412 under the action of the soft scraper 331 and gravity.

[0085] S3, the seeds in the positioning type hole 412 realize the long axis orientation and the bud opening direction under the action of vibration, directional boss and positive pressure air in the air blowing hole.

[0086] Specifically, the vibrator 431 of the direction adjusting mechanism 400 is started, and at the same time, the positive pressure air flow is introduced into the direction adjusting shunt plate 421, the seeds in the positioning type hole 412 fall into the ellipsoidal hole 4122 under the vibration excitation, and the seeds are preliminarily oriented along the long axis. Under the continuous vibration excitation, the seeds are further oriented along the long axis by the directional boss 4121 in the positioning type hole 4122. Figure 8For the seed with tail part orientation consistent with the feeding direction, i.e. the seed in the forward positioning state, the seed pose remains unchanged due to the restriction of the orientation boss 4124; for reference Figure 9 For the seed with the bud opening orientation consistent with the feeding direction, i.e. the seed in the reverse positioning state, since the center of gravity of the seed is close to the tail part, the bud opening area of the seed falls above the orientation boss 4124 after the vibration displacement, and under the auxiliary push of the positive pressure air force of the air blowing hole 4125, the seed is turned over and falls back into the ellipsoidal hole 4122, the orientation is realized, and the oriented seed is in the forward positioning state as shown in Figure 8 .

[0087] S4, the seed throwing mechanism 500 sucks the seed from the positioning hole 412 of the orientation mechanism 400 and throws it into the corresponding hole hole 720 in the disk 710.

[0088] Specifically, the air flow distribution plate 532 of the seed throwing mechanism 500 connects the negative pressure air flow, the lifting assembly 520 of the seed throwing mechanism 500 drives the suction and discharge assembly 530 to move downward, the suction needle 533 adsorbs the seed in the positioning hole 412, and then the lifting assembly 520 moves upward; then the horizontal moving assembly 510 moves the adsorbed seed to above the disk 710, so that the center of each suction needle 533 corresponds to the center of each hole hole 720 of the disk 710; then the lifting assembly 520 carries the adsorbed seed to the seed throwing position, the air flow distribution plate 532 is switched to positive pressure air flow, so that the seed falls into each hole hole 720 of the disk 710, and the falling point position of the seed in each hole hole 720 of the disk 710 and the head-tail orientation are consistent.

[0089] S5, the suction and discharge assembly 530 of the seed throwing mechanism 500 is reset, and the disk conveying mechanism 600 positions the disk 710.

[0090] Specifically, the horizontal moving assembly 510 and the lifting assembly 520 of the seed throwing mechanism 500 move the suction and discharge assembly 530 to directly above the orientation mechanism 400, so that the position of each suction needle 533 corresponds to the position of each positioning hole 412 of the filling plate 411; the disk conveying mechanism 600 positions the disk 710 to the seeding position corresponding to the positioning hole 412 of the orientation mechanism 400, and executes steps S2 to S4.

[0091] Repeat steps S1 to S5 to complete the seed throwing work of multiple disks and realize continuous positioning and orientation seeding of large seeds.

[0092] In the embodiment, the quantitative seed feeding mechanism is used to feed the seeds to the scraper assembly, so as to avoid the problems of seed jamming caused by excessive amount of seeds and seed missing caused by insufficient amount of seeds in the seed filling process, and improve the precision of single seed filling. The seed scraping mechanism is used to make the seeds flow and fill into the positioning holes quickly, so as to improve the operation efficiency of single seed filling. For the seeds in the positioning holes with the bud opening direction consistent with the feeding direction, that is, the seeds in the reverse positioning state, the adjusting mechanism uses the physical characteristics that the center of gravity of large seeds is close to the tail to make the seeds reverse in the ellipsoidal holes to realize the bud opening adjustment, without using visual detection of the seed bud opening direction to mechanically adjust the seeds, so that the structure is simple and the cost is low. The seeds falling into the positioning holes are subjected to the actions of vibration, directional boss and positive pressure air force in the air blowing hole to realize the long axis orientation and bud opening adjustment, and the adaptability to large seeds of the same variety and different sizes is high, and the seeds are not jammed and damaged, and the bud opening adjustment efficiency is high. For large seeds of different varieties, the positioning holes of the seed filling plate can be designed according to the size characteristics of the seeds, and the adaptability to the positioning and directional seeding requirements of large seeds of different varieties is high.

[0093] The above describes the embodiments of the application in detail in combination with the drawings, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art in the technical field without departing from the purpose of the application.

Claims

1. A large seed positioning and directional sowing device, characterized in that, The device comprises a rack, a quantitative seed supply mechanism, a seed scraping mechanism, a direction adjusting mechanism, a seed dropping mechanism and a plug tray conveying mechanism; the plug tray conveying mechanism is installed on the rack, the seed dropping mechanism is horizontally arranged above the plug tray conveying mechanism and the direction adjusting mechanism, the quantitative seed supply mechanism, the seed scraping mechanism and the direction adjusting mechanism are arranged on one side of the plug tray conveying mechanism, and the quantitative seed supply mechanism and the seed scraping mechanism are arranged above the direction adjusting mechanism; the plug tray conveying mechanism is provided with a plug tray having a plurality of groups of plug holes, the direction adjusting mechanism comprises a seed filling plate provided with at least one group of positioning holes according to the plug tray specification; wherein, the quantitative seed supply mechanism is used for supplying seeds to the seed scraping mechanism in a quantitative manner; the seed scraping mechanism comprises a scraper assembly capable of moving back and forth on the surface of the seed filling plate in a straight line, the scraper assembly receives the seeds supplied by the quantitative seed supply mechanism, and the scraper assembly pushes the quantitative seeds to make the seeds quickly fall into a group of the positioning holes of the direction adjusting mechanism during the straight-line movement, so as to realize the arrangement, positioning and filling of the seeds; the direction adjusting mechanism is used for adjusting the direction of the seeds falling into each of the positioning holes, so that the sprout directions of the seeds are consistent with the long axis directions; the positioning hole comprises a seed guiding cone hole for guiding the seed to fall in and an ellipsoidal hole for restricting the long axis direction of the seed; the long axis direction of the positioning hole is arranged in the front-rear direction; the seed guiding cone hole and the ellipsoidal hole are arranged in the up-down direction and are provided with a stepped hole therebetween; the front side of the stepped hole is provided with a directional boss which is raised from the middle position of the positioning hole to the front end of the long axis direction; the seed falling into the positioning hole has a forward positioning state and a reverse positioning state; in the forward positioning state, the seed falls into the ellipsoidal hole and the sprout of the seed is away from the directional boss; in the reverse positioning state, the seed falls into the ellipsoidal hole and the sprout of the seed is above the directional boss; the directional boss is provided with a gas blowing hole for blowing gas to the sprout position of the seed, so as to adjust the direction of the seed and adjust the seed in the reverse positioning state to the forward positioning state; the seed dropping mechanism is used for synchronously sucking a group of positioned and oriented seeds from the positioning hole of the direction adjusting mechanism and dropping the seeds into the corresponding plug hole of the plug tray; the plug tray conveying mechanism is used for controlling the movement of the plug tray.

2. The apparatus for positioning and directional sowing of large seeds according to claim 1, characterized in that: The direction adjusting mechanism further comprises a vibrator fixed on the rack, the seed filling plate is directly or indirectly installed on the vibrator, the vibrator is a linear vibrator, and the feeding direction of the vibrator is arranged in the forward direction of the long axis direction of the positioning hole, so that the sprout of the seed in the reverse positioning state is gradually lifted by the positioning boss, so that the sprout of the seed falls above the gas blowing hole.

3. The apparatus of claim 2, wherein: A direction adjusting flow distribution plate is arranged between the seed filling plate and the vibrator, the direction adjusting flow distribution plate is installed on the vibrator, the direction adjusting flow distribution plate is internally provided with a gas blowing flow channel, the seed filling plate is installed on the direction adjusting flow distribution plate, and the gas blowing flow channel is in communication with each of the gas blowing holes to provide positive pressure gas flow to each of the gas blowing holes.

4. The apparatus of claim 2, wherein: The gas blowing hole forms a positive pressure airflow field above the gas blowing hole after the positive pressure airflow is introduced, and the upper part of the gas blowing hole is a conical hole with a gradually expanding aperture from bottom to top, so that the action area of the positive pressure airflow field extends radially outward with the increase of height.

5. The apparatus of claim 4, wherein: The directional boss is gradually raised from the middle of the positioning hole to the front end of the long axis direction, and a gas blowing platform is arranged at the end of the long axis direction, the gas blowing platform is arranged flat, and the gas blowing hole is arranged on the gas blowing platform.

6. A device for positioning and directional sowing of large seeds according to any one of claims 2 to 5, characterized in that: The quantitative seed supply mechanism comprises a seed tank with an open top, an outer groove wheel arranged in the seed tank, a first driving assembly for driving the outer groove wheel to rotate, a seed guide plate arranged below the seed tank, and a seed storage plate located on one side below the seed guide plate. The outer groove wheel has circumferentially distributed grooves to quantitatively take out the seeds in the seed tank and drop them onto the seed guide plate. The first driving assembly comprises a first motor mounted on the seed tank, a rotating shaft driven by the first motor, and the outer groove wheel is mounted on the rotating shaft. The rotating shaft is connected to the driving shaft of the first motor through a shaft coupling. The seed tank is provided with a brush located above the side surface of the outer groove wheel to remove excess seeds.

7. The apparatus of claim 6, wherein: The middle part of the seed storage plate is hollow, the seed filling plate is mounted at the hollow position of the seed storage plate, the upper surface of the seed storage plate is flush with the upper surface of the seed filling plate, and the seed storage plate and the seed filling plate are gap-fitted.

8. The apparatus of claim 6, wherein: The seed scraping mechanism comprises a seed scraping moving assembly mounted on the rack and a seed scraping bracket driven by the seed scraping moving assembly to move back and forth in a straight line. The seed scraping moving assembly is mounted on the rack, the seed scraping assembly is mounted on the seed scraping bracket, the seed scraping assembly comprises two soft scraping plates, and a seed receiving space is formed between the two soft scraping plates to receive the seeds dropped by the seed guide plate. The bottom of the soft scraping plate abuts against the surface of the seed storage plate or the surface of the seed filling plate, so that the soft scraping plate can scrape the seeds falling into the seed receiving space into the positioning holes of the seed filling plate during the straight line movement, thereby arranging and positioning the large seeds.

9. The apparatus according to any one of claims 2 to 5, wherein: The plug tray conveying mechanism comprises a conveying belt assembly for conveying the plug tray and a second motor for driving the conveying belt assembly to move. The plug tray conveying mechanism further comprises a plug tray positioning sensor for detecting the position signal of the plug tray, so as to control the operation of the second motor.

10. A method of positioning and orienting large seed for planting, comprising: The large seed positioning and directional seeding device according to any one of claims 2 to 9 comprises the following steps: The plug tray conveying mechanism conveys the plug tray to the seeding position; The quantitative seed supply mechanism feeds the quantitative seeds to the seed scraping assembly of the seed scraping mechanism, and the seeds flow through the seed filling plate of the directional adjusting mechanism and are filled into the positioning holes during the straight line movement of the seed scraping assembly; The seeds in the positioning holes are subjected to the vibration, the directional boss and the positive pressure gas force in the gas blowing hole to realize the long axis orientation and the bud opening orientation.

Images