Plug seedling dibbling machine and application method thereof

Abstract

The invention discloses a plug seedling dibbler and an application method thereof.The plug seedling dibbler comprises a supporting frame, a belt conveying module used for horizontally feeding and conveying seedling trays is installed at the top end of the supporting frame, and a portal frame used for being connected with the top end of the supporting frame is installed above the belt conveying module; a double-wing type plate frame is slidably mounted on the outer wall of one side of the portal frame, a height-adjustable seed falling structure is mounted on the outer wall of the side, away from the portal frame, of the double-wing type plate frame, and a lead screw lifting module used for driving the double-wing type plate frame and the height-adjustable seed falling structure to ascend and descend is mounted on the outer wall of one side of the portal frame. According to the device, the seeds are kept in a falling line state in the falling and discharging process, so that the phenomena of dislocation, friction and blockage of the seeds in the conveying process are reduced, it is ensured that the seeds can smoothly enter a seedling raising tray from a pipeline, and the problem that the seeds with irregular shapes or high wettability block components such as a seed falling pipeline is solved.

Description

Technical Field

[0001] The invention relates to the technical field of plug tray seedling cultivation, in particular to a plug tray seeding machine and an application method thereof. Background Art

[0002] The plug tray seeding machine is a commonly used sowing equipment in modern agricultural production, mainly used in the seedling stage of large-scale vegetables, fruits, flowers and other crops. Its function is to efficiently complete the quantitative positioning sowing of a large number of seeds in a short time through automation, thereby improving the sowing efficiency and seedling quality. Its structure is mainly composed of a feeding system, a plug tray transmission system, a sowing system and a control system. The seeds are transported to the sowing position by a feeder, and the feeding device can be adjusted according to the characteristics of different seeds to ensure accurate supply. Subsequently, the plug tray filled with seedling bed soil is accurately transported to the sowing position through a conveyor belt and accurately stops through a positioning device. During the sowing operation, the seed dropping device accurately places the seeds in each sowing hole of the plug tray according to the preset parameters. The whole process is controlled by the electrical control box and PLC to coordinate the work of various components. The sensor system monitors the sowing parameters in real time to ensure the stable improvement of sowing efficiency and quality. For example, a high-efficiency plug tray vegetable sowing and seedling raising device disclosed in the application publication number CN118383262A includes a vertical hole pressing mechanism for realizing "hole pressing" on the frame, a plug tray driving mechanism for realizing the movement of the plug tray, a "one hole and one seed" on-demand sowing mechanism for realizing on-demand sowing, a covering mechanism for covering the holes with soil, and a spraying component for realizing fertilization and watering. Through the orderly control and coordination of components such as ball screws, crank sliders, brushes and atomizing nozzles, the device can realize The "hole pressing, spot sowing, soil covering, fertilizing and watering" links are realized. During the process of hole pressing, this technical solution is mainly controlled by the sowing end component, wherein the servo controls the slider to perform a reciprocating motion, and the push pin pushes a vegetable seed out of the feeding funnel, and finally the vegetable seed can fall from the square pipe. In this process, since the feeding funnel and the square pipe at the bottom are staggered conductive structures and have an angle α, and the moisture content, size and shape of the seeds themselves are different, especially for seeds with high moisture content, it is easy to attach to the funnel mouth and stick to the push pin. This makes it easy for the feeding funnel to be blocked and difficult to discharge, and the push pin to be blocked and unable to slide during the seed dropping process, resulting in interruption of the sowing operation and uneven sowing. Summary of the invention

[0003] The object of the present invention is to provide a hole tray seeding machine and an application method thereof, wherein a coaxial and mutually conductive semi-straight hollow shell is directly connected to the bottom end of a main seeding tube, and the seed in the main seeding tube enters the semi-straight hollow shell through a conical inner seed dropping tube. During hole pressure seeding, a multi-tube seed control module causes a plurality of multi-point control plates in the semi-straight hollow shells to slide, so that the seed in the conical inner seed dropping tube can be discharged through a depth-adjustable seed dropping structure and fall onto a seedling tray, thereby solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a plug tray seeding machine, comprising:

[0005] A support frame, a belt conveyor module for horizontally feeding and conveying the seedling tray is installed on the top of the support frame, and a gantry frame for interconnecting with the top of the support frame is installed above the belt conveyor module, a double-wing plate frame is slidably installed on the outer wall of one side of the gantry frame, and a height-adjustable seed dropping structure is installed on the outer wall of the double-wing plate frame on the side away from the gantry frame, and a screw rod lifting module for driving the double-wing plate frame and the height-adjustable seed dropping structure to lift and lower is installed on the outer wall of one side of the gantry frame;

[0006] A U-shaped arm plate, wherein the U-shaped arm plate is fixed on the outer wall of the gantry frame above the double-wing plate frame, and a plurality of main seeding tubes extending downward at equal intervals are installed inside the U-shaped arm plate, and a conical inner seeding tube is integrally formed at one end inside the main seeding tube, and a semi-straight hollow shell is installed at one end of the surface of the main seeding tube, and a multi-point material control plate for controlling the opening and closing of the conical inner seeding tube and the semi-straight hollow shell is installed inside a plurality of the semi-straight hollow shells, and the top end of the height-adjustable seeding structure extends to the inside of the main seeding tube;

[0007] An H-shaped hollow frame is fixed at the bottom ends of two of the semi-straight hollow shells, a multi-tube seeding control module for pulling the multi-point material control plate to slide back and forth is installed inside the H-shaped hollow frame, and a PLC control panel electrically connected to the belt transmission module, the screw lifting module, and the input end of the multi-tube seeding control module is installed on the outer wall of one side of the support frame.

[0008] Preferably, the screw lifting module includes a servo motor installed on the top of the gantry, a ball screw rotatably installed on the outer wall of one side of the gantry, and a nut pair installed on one end of the surface of the ball screw, one side outer wall of the nut pair is fixedly connected to the back side of the double-wing plate frame, the other side outer wall of the nut pair is slidably matched with one side wall of the gantry, and the top of the ball screw and the output end of the servo motor are connected to each other through a coupling.

[0009] Preferably, a seed storage tube is installed at the top of the main sowing tube, and the outer diameter of the seed storage tube gradually increases from one end close to the main sowing tube to the other end. A hanger is fixed to the bottom end of the U-shaped arm plate, and several semi-straight hollow shells are fixed inside the hanger.

[0010] Preferably, the height-adjustable seed dropping structure includes a lower support beam fixed on the outer wall of one side of the double-wing plate frame, and a plurality of seed discharge tubes vertically fixedly installed inside the lower support beam and coaxial with the main seeding tube. The top end of the seed discharge tube extends to the interior of the main seeding tube and is integrally formed with a conical inoculation tube, and the maximum outer diameter of the conical inoculation tube is equal to the inner diameter of the main seeding tube.

[0011] Preferably, the height-adjustable seed placement structure also includes a vertical arm fixed on the top wall of the gantry, a T-arm installed on the outer wall of one side of the vertical arm, and an upper support beam fixed at the bottom end of the T-arm, and the top end of the seed placement tube passes through the outside of the upper support beam.

[0012] Preferably, the multi-point material control plate includes a semi-straight valve plate slidably installed on the top of the semi-straight hollow shell, a straight plate installed at one end of the semi-straight valve plate, and a cross arm fixed between two adjacent straight plates, and one end of the cross arm surface is provided with a drop hole for the seed material to fall out.

[0013] Preferably, the multi-tube seeding control module includes a rotating shaft rotatably installed inside the H-shaped hollow frame, a first truss plate and a second truss plate on the front and rear sides of the sliding H-shaped hollow frame, and a two-way connecting rod pulling structure for connecting the rotating shaft, the first truss plate and the second truss plate. A cylinder is installed on the outer wall of one side of the H-shaped hollow frame, and the top of the piston rod of the cylinder is fixedly connected to the outer wall of one side of the first truss plate. Right-angle arms are installed on both sides of the top of the second truss plate, and the outer wall of one side of the right-angle arm is fixedly connected to the back wall of the cross arm.

[0014] Preferably, the bidirectional connecting rod pulling structure includes a center swing arm fixed at one end of the rotating shaft surface and a first connecting rod and a second connecting rod hingedly installed at both ends of the center swing arm. The end of the first connecting rod away from the center swing arm is hinged to the outer wall of one side of the first truss plate, and the end of the second connecting rod away from the center swing arm is hinged to the outer wall of one side of the second truss plate.

[0015] Preferably, guide columns are installed on both inner walls of the H-shaped hollow frame through protrusions, and the first truss plate, the second truss plate and the guide columns are slidably matched.

[0016] The present invention also provides an application method of the plug tray seeding machine, such as the plug tray seeding machine described above, comprising the following steps:

[0017] S01: The seedling tray to be sown is placed on the belt conveyor module, and the seed drill is turned on through the PLC control panel to work. The belt conveyor module transports the seedling tray from the storage position to the sowing position;

[0018] S102: After the seedling tray reaches the lower position of the height-adjustable seed placement structure, the PLC control panel sends a working signal to the screw lifting module and the multi-tube seed material control module, and the screw lifting module is responsible for adjusting the seed placement height of the double-wing plate frame and the height-adjustable seed placement structure to ensure that the seeds can accurately fall into each hole in the seedling tray;

[0019] S103: The seed material in the main seeding tube falls through the conical inner drop seeding tube and is blocked by the multi-point material control plate in the semi-straight hollow shell;

[0020] S104: The PLC control panel drives the multi-tube seed control module to start operation, which controls the multi-point material control plates in the multiple semi-straight hollow shells to perform reciprocating sliding movements. When the multi-point material control plates slide, the multi-point material control plates no longer block the bottom opening of the conical inner seed tube, and the conical inner seed tube and the semi-straight hollow shell are in a coaxial conductive state. The seeds are then discharged through the semi-straight hollow shell and the height-adjustable seed dropping structure until the seeds fall into the holes in the seedling tray below the height-adjustable seed dropping structure, thereby completing a sowing action.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the plug tray seeding machine and its application method optimize the seed feeding and seed dropping process through the design of a semi-straight hollow shell and the application of a main seeding tube and a conical inner seed dropping tube, so that the seeds are kept in a falling line state during the falling and discharging process, thereby reducing the dislocation, friction and jamming of the seeds during the transportation process, ensuring that the seeds can smoothly enter the seedling tray from the pipeline, reducing the blockage problem of the seed dropping pipeline and other components caused by seeds with irregular shapes or high moisture content, so that the seeds can fall and be discharged smoothly. At the same time, the equipment has the functions of adjustable seed dropping height and adjustable seed dropping frequency with the cooperation of the main seeding tube, the semi-straight hollow shell, the multi-point material control plate, the height-adjustable seed dropping structure and the multi-tube seed material control module, and the smooth connection through the belt transmission module ensures the rapid turnover of the seedling tray and the sowing and dropping of the seeds, thereby improving the overall production efficiency of seedling cultivation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the gantry of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of a U-shaped arm plate according to the second embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the main seeding tube according to the second embodiment of the present invention;

[0029] Figure 8 It is a schematic diagram of a partial three-dimensional structure of a multi-point material control plate according to the second embodiment of the present invention;

[0030] Fig. 9 The three-dimensional structure of the multi-tube seeding control module of the third embodiment of the present invention is shown in FIG. Figure 1 ;

[0031] Fig.10 The three-dimensional structure of the multi-tube seeding control module of the third embodiment of the present invention is shown in FIG. Figure 2 .

[0032] In the figure: 1. Support frame; 2. Belt transmission module; 3. Gantry; 4. Double-wing plate frame; 5. Screw lifting module; 6. PLC control panel; 7. U-shaped arm plate; 8. Main seeding tube; 801. Seed storage tube; 802. Conical inner seed drop tube; 9. Hanger; 10. Semi-straight hollow shell; 11. Multi-point material control plate; 1101. Semi-straight valve plate; 1102. Straight plate; 1103. Cross arm; 1104. Dropping hole; 12. Height adjustable Seeding structure; 1201, vertical arm; 1202, lower support beam; 1203, T-arm; 1204, upper support beam; 1205, seed discharge tube; 1206, conical inoculation tube; 13, H-shaped hollow frame; 14, multi-tube seed control module; 1401, cylinder; 1402, first truss; 14021, guide column; 1403, rotating shaft; 1404, two-way connecting rod tension structure; 1405, second truss; 1406, right-angle arm. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1, by Figures 1 to 5The present invention comprises a support frame 1, a belt conveyor module 2 for horizontally feeding and conveying a seedling tray is installed at the top of the support frame 1, and a gantry frame 3 for interconnecting with the top of the support frame 1 is installed above the belt conveyor module 2, a double-wing plate frame 4 is slidably installed on the outer wall of one side of the gantry frame 3, and a height-adjustable seed dropping structure 12 is installed on the outer wall of the double-wing plate frame 4 away from the gantry frame 3, and a screw lifting module 5 for driving the double-wing plate frame 4 and the height-adjustable seed dropping structure 12 to lift and lower is installed on the outer wall of one side of the gantry frame 3;

[0035] A U-shaped arm plate 7 is fixed on the outer wall of the gantry frame 3 above the double-wing plate frame 4, and a plurality of main sowing tubes 8 extending downward at equal intervals are installed inside the U-shaped arm plate 7, and a conical inner seed drop tube 802 is integrally formed at one end inside the main sowing tube 8, and a seed storage tube 801 is installed at the top of the main sowing tube 8, and the outer diameter of the seed storage tube 801 gradually increases from one end close to the main sowing tube 8 to the other end, and a hanger 9 is fixed at the bottom end of the U-shaped arm plate 7, and a plurality of semi-straight hollow shells 10 are fixed inside the hanger 9;

[0036] A semi-straight hollow shell 10 is installed at one end of the surface of the main sowing tube 8, and a multi-point material control plate 11 for controlling the opening and closing of the conical inner seeding tube 802 and the semi-straight hollow shell 10 is installed inside a plurality of semi-straight hollow shells 10, and the top end of the height-adjustable seeding structure 12 extends to the inside of the main sowing tube 8;

[0037] An H-shaped hollow frame 13 is fixed at the bottom ends of two semi-straight hollow shells 10, and a multi-tube seeding control module 14 for pulling the multi-point material control plate 11 to slide back and forth is installed inside the H-shaped hollow frame 13. A PLC control panel 6 electrically connected to the belt transmission module 2, the screw lifting module 5, and the input end of the multi-tube seeding control module 14 is installed on the outer wall of one side of the support frame 1;

[0038] The seeds enter the main sowing tube 8 from the seed storage tube 801, and are guided and transported by the main sowing tube 8 and the conical inner seed drop tube 802, and finally arrive at the semi-straight hollow shell 10. After the seeds enter the semi-straight hollow shell 10, they are controlled by the multi-point material control plate 11 and the multi-tube seed control module 14 to fall into the height-adjustable seed drop structure 12 at an appropriate time and position. In this process, the equipment follows the preset sowing density and position requirements of the seedling tray. The PLC control panel 6 issues an instruction, and the multi-tube seed control module 14 controls the multi-point material control plate 11 to start sliding to achieve the purpose of seed material discharge on and off. When the multi-point material control plate 11 slides, the main sowing tube 8 and the semi-straight hollow shell 10 are coaxial and conductive to prevent seed material blockage caused by misalignment of the seed drop pipeline;

[0039] An application method of a plug tray seeding machine of the present embodiment, such as the above-mentioned plug tray seeding machine, comprises the following steps:

[0040] S101: The seedling tray to be sown is placed on the belt conveyor module 2, and the seeding machine is turned on through the PLC control panel 6 to work, and the belt conveyor module 2 transports the seedling tray from the storage position to the sowing position;

[0041] S102: After the seedling tray reaches the position below the height-adjustable seed placement structure 12, the PLC control panel 6 sends a working signal to the screw lifting module 5 and the multi-tube seed material control module 14, and the screw lifting module 5 is responsible for adjusting the seed placement height of the double-wing plate frame 4 and the height-adjustable seed placement structure 12 to ensure that the seeds can accurately fall into each hole in the seedling tray;

[0042] S103: the seed material in the main sowing tube 8 falls through the conical inner drop seed tube 802 and is blocked by the multi-point material control plate 11 in the semi-straight hollow shell 10;

[0043] S104: The PLC control panel 6 drives the multi-tube seed control module 14 to start operation, which controls the multi-point material control plates 11 in the multiple semi-straight hollow shells 10 to perform reciprocating sliding movements. When the multi-point material control plates 11 slide, the multi-point material control plates 11 no longer block the bottom opening of the conical inner seed tube 802, and the conical inner seed tube 802 and the semi-straight hollow shell 10 are in a coaxial conductive state, then the seeds are discharged through the semi-straight hollow shell 10 and the height-adjustable seed dropping structure 12, until the seeds fall into the holes in the seedling tray below the height-adjustable seed dropping structure 12, thereby completing a sowing action.

[0044] Embodiment 2, based on embodiment 1, Figure 6 , Figure 7 and Figure 8 It is given that the screw lifting module 5 includes a servo motor installed at the top of the gantry 3, a ball screw rotatably installed on the outer wall of one side of the gantry 3, and a nut pair installed at one end of the surface of the ball screw, one side outer wall of the nut pair is fixedly connected to the back of the double-wing plate frame 4, the other side outer wall of the nut pair is slidably matched with one side wall of the gantry 3, and the top of the ball screw and the output end of the servo motor are connected to each other through a coupling;

[0045] The height-adjustable seed dropping structure 12 includes a lower support beam 1202 fixed on the outer wall of one side of the double-wing plate frame 4, and a plurality of seed discharge tubes 1205 vertically fixedly installed inside the lower support beam 1202 and coaxial with the main seeding tube 8. The top end of the seed discharge tube 1205 extends to the inside of the main seeding tube 8 and is integrally formed with a conical inoculation tube 1206. The maximum outer diameter of the conical inoculation tube 1206 is equal to the inner diameter of the main seeding tube 8. The height-adjustable seed dropping structure 12 also includes a vertical arm 1201 fixed on the top wall of the gantry 3, a T-arm 1203 installed on the outer wall of one side of the vertical arm 1201, and an upper support beam 1204 fixed at the bottom end of the T-arm 1203. The top end of the seed discharge tube 1205 passes through the outside of the upper support beam 1204, so as to control the seed discharge height of the height-adjustable seed dropping structure 12 When the staff starts the screw lifting module 5 through the PLC control panel 6 to work, the screw lifting module 5 pulls the double-wing plate frame 4 and the lower support beam 1202 and the seeding tube 1205 to move downward or upward; the neutral arm 1201 and the T-arm 1203 allow the upper support beam 1204 to be suspended and fixed and assist the seeding tube 1205 to slide up and down. During the sliding process of the seeding tube 1205, the seeding tube 1205 drives the conical inoculation tube 1206 and the main sowing tube 8 to slide relative to each other, so as to adjust the combined length of the seeding tube 1205, the conical inoculation tube 1206 and the main sowing tube 8, and then control the height of the seeding port at the bottom of the seeding tube 1205, which can adapt to the height changes of different types of seedling trays, so that the equipment can be quickly switched for sowing of different crops;

[0046] When the multi-point material control plate 11 is driven to slide by the multi-tube seed control module 14 and does not block the conical inner seed tube 802, the seed in the conical inner seed tube 802 can enter the conical inoculation tube 1206 through the semi-straight hollow shell 10, and be discharged through the conical inoculation tube 1206 and the seed discharge tube 1205 in turn and fall on the holes of the seedling tray;

[0047] The multi-point material control plate 11 includes a semi-straight valve plate 1101 slidably mounted on the top of the semi-straight hollow shell 10, a straight plate 1102 mounted on one end of the semi-straight valve plate 1101, and a cross arm 1103 fixed between two adjacent straight plates 1102. One end of the surface of the cross arm 1103 is provided with a drop hole 1104 for the seed material to drop out. When the multi-point material control plate 11 controls the on-off state of the semi-straight hollow shell 10 and the conical inner seed drop tube 802, the multi-tube seed control module 14 pulls the multi-point material control When the plate 11 slides back and forth once, the movable end of the multi-tube seed control module 14 drives the cross arm 1103, the straight plate 1102 and the semi-straight valve plate 1101 to slide, and the sliding direction of the multi-point control plate 11 is the same as the horizontal opening direction of the semi-straight hollow shell 10, and the drop hole 1104 moves to the bottom of the conical inner seed tube 802, so that the seed in the conical inner seed tube 802 is discharged into the conical inoculation tube 1206 through the drop hole 1104, so that various material tubes remain in a conductive state.

[0048] Embodiment 3, based on embodiment 2, Fig. 9 and Fig.10 It is given that the multi-tube seeding control module 14 includes a rotating shaft 1403 rotatably installed inside the H-shaped hollow frame 13, a first truss plate 1402 and a second truss plate 1405 on the front and rear sides of the sliding H-shaped hollow frame 13, and a two-way connecting rod pulling structure 1404 for connecting the rotating shaft 1403, the first truss plate 1402, and the second truss plate 1405. A cylinder 1401 is installed on the outer wall of one side of the H-shaped hollow frame 13, and the top of the piston rod of the cylinder 1401 is fixedly connected to the outer wall of one side of the first truss plate 1402. The PLC control panel 6 controls the solenoid valve connected to the multi-tube seeding control module 14, and the PLC control panel 6 controls the on-off state of the solenoid valve, so that the piston rod of the multi-tube seeding control module 14 drives the first truss plate 1402 to slide;

[0049] Right-angle arms 1406 are installed on both sides of the top of the second truss plate 1405. One side outer wall of the right-angle arm 1406 is fixedly connected to the back wall of the cross arm 1103. Guide columns 14021 are installed on both inner walls of the H-shaped hollow frame 13 through convex seats. The first truss plate 1402, the second truss plate 1405 and the guide columns 14021 are slidably matched.

[0050] The bidirectional link tension structure 1404 includes a central swing arm fixed to one end of the surface of the rotating shaft 1403, and a first link and a second link hingedly installed at both ends of the central swing arm. An end of the first link away from the central swing arm is hingedly connected to an outer wall of one side of the first truss plate 1402, and an end of the second link away from the central swing arm is hingedly connected to an outer wall of one side of the second truss plate 1405.

[0051] When the piston rod of the cylinder 1401 pushes the first truss plate 1402 to slide in the direction of the rotating shaft 1403, since the second truss plate 1405 and the first truss plate 1402 are connected by the two-way connecting rod pulling structure 1404, the second truss plate 1405 also slides in the direction of the rotating shaft 1403 synchronously, and then the second truss plate 1405 drives the cross arm 1103 to slide through the right-angle arm 1406 until the drop hole 1104 is moved to the bottom of the conical inner seed drop tube 802, thereby realizing the conduction of the seed pipeline. Conversely, when the piston rod of the cylinder 1401 contracts, the second truss plate 1405 controls the multi-point material control plate 11 to reset, and the seed pipeline is closed at this time; through the precise mechanical design and control of the multi-tube seed control module 14, it can be ensured that the multi-point material control plate 11 slides at an accurate position and angle during the sowing process, ensuring that the seeds can accurately fall into the seed tray through the height-adjustable seed drop structure 12.

[0052] When the embodiment of the present application is in use, the staff first places the seedling tray to be sown on the belt conveyor module 2, and starts the seeding machine to work through the PLC control panel 6. The belt conveyor module 2 transports the seedling tray from the storage position to the sowing position, that is, the seedling tray is sent to the bottom of the height-adjustable seed dropping structure 12. During this process, the belt conveyor module 2 is driven by a motor under the command of the PLC control panel 6 to ensure that the seedling tray moves at a stable speed, thereby reducing inaccurate sowing caused by uneven speed. Once the seedling tray reaches the position below the height-adjustable seed dropping structure 12, the seedling tray is moved to the bottom of the height-adjustable seed dropping structure 12. After the setting, the PLC control panel 6 sends a working signal to the screw lifting module 5 and the multi-tube seed control module 14, and the screw lifting module 5 is responsible for adjusting the seed dropping height of the double-wing plate frame 4 and the height-adjustable seed dropping structure 12 to avoid the problem of incompatibility of the seed dropping height due to the large or small thickness of the seedling tray, that is, the screw lifting module 5 and the height-adjustable seed dropping structure 12 automatically adjust the working height of the height-adjustable seed dropping structure 12 according to the thickness of the seedling tray to ensure that the seeds can accurately fall into each hole of the seedling tray, and the seeds in the main sowing tube 8 pass through the conical inner seed dropping tube 802 The seeds fall down and are blocked by the multi-point material control plate 11 in the semi-straight hollow shell 10. The design of the conical inner seed drop tube 802 allows the seeds to pass through the main sowing tube 8 smoothly and fall close to the central axis of the main sowing tube 8. When the belt conveyor module 2 horizontally transfers the seedling tray, the multi-tube seed control module 14 starts to act, which controls the multi-point material control plates 11 in the multiple semi-straight hollow shells 10 to slide back and forth. When the multi-point material control plate 11 slides, the multi-point material control plate 11 no longer blocks the bottom end opening of the conical inner seed drop tube 802, and the conical inner seed drop tube 802 and the semi-straight When the hollow shell 10 in the mouth is in a coaxial conduction state, the seeds are discharged through the semi-straight hollow shell 10 and the height-adjustable seed dropping structure 12 until the seeds fall into the holes in the seedling tray below the height-adjustable seed dropping structure 12, thereby completing a sowing action. Due to the design of the multi-point material control plate 11 and the height-adjustable seed dropping structure 12, sowing in multiple holes can be achieved at the same time, thereby improving the sowing efficiency. At the same time, the seedling tray is continuously fed and transferred by the belt transmission module 2, and the multi-tube seed control module 14 drives the multi-point material control plate 11 to perform reciprocating sliding action to jointly complete the sowing work.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plug tray seeding machine, characterized in that: include: A support frame (1), wherein a belt conveyor module (2) for horizontally feeding and conveying a seedling tray is installed at the top of the support frame (1), and a gantry frame (3) for interconnecting with the top of the support frame (1) is installed above the belt conveyor module (2), a double-wing plate frame (4) is slidably installed on the outer wall of one side of the gantry frame (3), and a height-adjustable seed dropping structure (12) is installed on the outer wall of the double-wing plate frame (4) away from the gantry frame (3), and a screw rod lifting module (5) for driving the double-wing plate frame (4) and the height-adjustable seed dropping structure (12) to be lifted and lowered is installed on the outer wall of one side of the gantry frame (3); A U-shaped arm plate (7), wherein the U-shaped arm plate (7) is fixed on the outer wall of the gantry frame (3) above the double-wing plate frame (4), and a plurality of main sowing tubes (8) extending downward at equal intervals are installed inside the U-shaped arm plate (7), and a conical inner sowing tube (802) is integrally formed at one end inside the main sowing tube (8), and a semi-straight hollow shell (10) is installed at one end of the surface of the main sowing tube (8), and a multi-point material control plate (11) for controlling the opening and closing of the conical inner sowing tube (802) and the semi-straight hollow shell (10) is installed inside a plurality of the semi-straight hollow shells (10), and the top end of the height-adjustable sowing structure (12) extends to the inside of the main sowing tube (8); An H-shaped hollow frame (13) is fixed at the bottom ends of two of the semi-straight hollow shells (10), and a multi-tube seeding control module (14) for pulling a multi-point material control plate (11) to slide back and forth is installed inside the H-shaped hollow frame (13). A PLC control panel (6) electrically connected to the belt transmission module (2), the screw lifting module (5), and the input end of the multi-tube seeding control module (14) is installed on the outer wall of one side of the support frame (1).

2. A plug tray seeding machine according to claim 1, characterized in that: The screw lifting module (5) comprises a servo motor mounted on the top of the gantry (3), a ball screw rotatably mounted on the outer wall of one side of the gantry (3), and a nut pair mounted on one end of the surface of the ball screw, one side outer wall of the nut pair is fixedly connected to the back of the double-wing plate frame (4), the other side outer wall of the nut pair is slidably matched with one side wall of the gantry (3), and the top of the ball screw and the output end of the servo motor are connected to each other via a coupling.

3. A plug tray seeding machine according to claim 1, characterized in that: A seed storage tube (801) is installed at the top of the main sowing tube (8), and the outer diameter of the seed storage tube (801) gradually increases from one end close to the main sowing tube (8) to the other end. A hanger (9) is fixed to the bottom end of the U-shaped arm plate (7), and a plurality of semi-straight hollow shells (10) are fixed inside the hanger (9).

4. A plug tray seeding machine according to claim 1, characterized in that: The height-adjustable seed placement structure (12) comprises a lower support beam (1202) fixed on the outer wall of one side of the double-wing plate frame (4), and a plurality of seed discharge tubes (1205) vertically fixedly installed inside the lower support beam (1202) and coaxial with the main seeding tube (8). The top end of the seed discharge tube (1205) extends to the inside of the main seeding tube (8) and is integrally formed with a conical inoculation tube (1206), and the maximum outer diameter of the conical inoculation tube (1206 is equal to the inner diameter of the main seeding tube (8).

5. A plug tray seeding machine according to claim 4, characterized in that: The height-adjustable seed placement structure (12) further comprises a vertical arm (1201) fixed on the top wall of the gantry (3), a T-arm (1203) installed on the outer wall of one side of the vertical arm (1201), and an upper support beam (1204) fixed at the bottom end of the T-arm (1203), and the top end of the seed placement tube (1205) passes through the outside of the upper support beam (1204).

6. A plug tray seeding machine according to claim 1, characterized in that: The multi-point material control plate (11) comprises a semi-straight valve plate (1101) slidably mounted on the top of the semi-straight hollow shell (10), a straight plate (1102) mounted at one end of the semi-straight valve plate (1101), and a cross arm (1103) fixed between two adjacent straight plates (1102), and a drop hole (1104) for seed material to drop out is provided at one end of the surface of the cross arm (1103).

7. The plug tray seeding machine according to claim 1, characterized in that: The multi-tube seeding control module (14) comprises a rotating shaft (1403) rotatably mounted inside an H-shaped hollow frame (13), a first truss plate (1402) and a second truss plate (1405) sliding inside the front and rear sides of the H-shaped hollow frame (13), and a bidirectional connecting rod tension structure (1404) for connecting the rotating shaft (1403), the first truss plate (1402), and the second truss plate (1405); a cylinder (1401) is mounted on an outer wall of one side of the H-shaped hollow frame (13); the top end of the piston rod of the cylinder (1401) is fixedly connected to an outer wall of one side of the first truss plate (1402); right-angle arms (1406) are mounted on both sides of the top end of the second truss plate (1405); and an outer wall of one side of the right-angle arm (1406) is fixedly connected to the back wall of the cross arm (1103).

8. The plug tray seeding machine according to claim 7, characterized in that: The bidirectional connecting rod pulling structure (1404) includes a central swing arm fixed on one end of the surface of the rotating shaft (1403) and a first connecting rod and a second connecting rod hingedly installed at both ends of the central swing arm. The end of the first connecting rod away from the central swing arm is hingedly connected to the outer wall of one side of the first truss plate (1402), and the end of the second connecting rod away from the central swing arm is hingedly connected to the outer wall of one side of the second truss plate (1405).

9. The plug tray seeding machine according to claim 7, characterized in that: Guide columns (14021) are installed on both inner walls of the H-shaped hollow frame (13) through convex seats, and the first truss plate (1402) and the second truss plate (1405) are slidably matched with the guide columns (14021).

10. An application method of a plug tray seeding machine, comprising the plug tray seeding machine as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S101: The seedling tray to be sown is placed on the belt conveyor module (2), and the seed drill is turned on through the PLC control panel (6) to start working, and the belt conveyor module (2) transports the seedling tray from the storage position to the sowing position; S102: After the seedling tray reaches the position below the height-adjustable seed placement structure (12), the PLC control panel (6) sends a working signal to the screw lifting module (5) and the multi-tube seed material control module (14), and the screw lifting module (5) is responsible for adjusting the seed placement height of the double-wing plate frame (4) and the height-adjustable seed placement structure (12) to ensure that the seeds can accurately fall into each hole in the seedling tray; S103: The seed material in the main sowing tube (8) falls through the conical inner drop seed tube (802) and is blocked by the multi-point material control plate (11) in the semi-straight hollow shell (10); S104: The PLC control panel (6) drives the multi-tube seed control module (14) to start operation, which controls the multi-point material control plate (11) in the multiple semi-straight hollow shells (10) to perform reciprocating sliding movements. When the multi-point material control plate (11) slides, the multi-point material control plate (11) no longer blocks the bottom opening of the conical inner seed tube (802), and the conical inner seed tube (802) and the semi-straight hollow shell (10) are in a coaxial conductive state, and the seeds are discharged through the semi-straight hollow shell (10) and the height-adjustable seed drop structure (12), until the seeds fall into the seedling tray holes below the height-adjustable seed drop structure (12), thereby completing a sowing action.

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