Hole pressing and sowing device of seedling tray sowing machine

Abstract

The hole pressing and sowing device comprises a rack, a hole pressing roller, a sowing roller and a seed bin, hole pressing teeth are arranged on the hole pressing roller, a seed containing hole is formed in the sowing roller, a U-shaped groove is formed below the seed containing hole, a dovetail groove is formed in the upper rear side of the U-shaped groove, and the dovetail groove is communicated with the dovetail groove. A seed bin baffle is arranged on the rear side of the seed bin, and the hole pressing teeth are pyramid-shaped hole pressing teeth with large cones and small cones. According to the sowing roller of the structure, due to the U-shaped design of the seed containing holes and the dovetail grooves in the rear ends of the seed containing holes, redundant seeds in the seed containing holes return to the seed bin along the dovetail grooves, sowing is stable, the seeds cannot be damaged, and the sowing efficiency and quality are improved; by arranging the hole pressing teeth with large cones and small cones, seeds can directly fall into the centers of holes; the structure of the seeding roller is simplified, and the cost is saved; the sowing bin is arranged on the front side, seeds can be sown immediately after passing through the sowing bin, and the risk that the seeds fall off in the rotating process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of floating seedling tray seeding machine technology, and in particular to a pressing hole seeding device for a seedling tray seeding machine. Background Technology

[0002] In the cultivation of crops such as tobacco, flowers, and vegetables, seeders are used to sow seeds in seedling trays. For example, in the device with patent number CN206547299U, the pressing teeth on the pressing roller of existing seedling tray seeders are all conical, and the seed receiving holes on the sowing roller are U-shaped or V-shaped. Figure 1 As shown.

[0003] The problem with the existing technology structure is that, during use, (1) because it is a single cone, the holes pressed out on the seedling tray are relatively shallow, not wide enough, and the soil is loose, which makes it easy for seeds to get stuck on the top of the hole or fall outside, which is not conducive to falling into the center of the hole and not conducive to the seeds taking root; (2) in the seed holding trough, because the seeds are of different sizes, sometimes two or more seeds enter, and the seeds partly exceed the holding hole. The seeds will be crushed by the seed baffle or the seed covering cloth. The damaged seeds directly block (paste) the entire holding hole, which greatly reduces the sowing efficiency and quality. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the existing technology and improve upon it by providing a pressure-hole sowing device for a seedling tray sowing machine, which greatly improves the efficiency and quality of sowing.

[0005] This utility model is achieved through the following technical solution: a pressing hole sowing device for a seedling tray seeder, comprising a frame, a pressing hole roller, a sowing roller, and a seed bin. The pressing hole roller is provided with pressing hole teeth, the sowing roller is provided with a seed receiving hole, a U-shaped groove is provided below the seed receiving hole, a dovetail groove is provided on the upper rear side of the U-shaped groove, and a seed bin baffle is provided on the rear side of the seed bin. The pressing hole teeth are pyramid-shaped pressing hole teeth with large cones and small cones.

[0006] Preferably, the U-shaped groove has a diameter of 2.2-2.6 mm and a depth of 2.6-3.0 mm, and the dovetail groove is located at 1 / 2 of the U-shaped groove, forming a streamlined opening.

[0007] Preferably, there is a distance of 0.5mm-0.8mm between the seed bin baffle and the sowing roller.

[0008] Preferably, the seed bin is located in front of the sowing roller, and the seed bin baffle is located on the lower part of the front side of the sowing roller.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] (1) The U-shaped design of the seed receiving hole of the seed roller, plus the dovetail groove at the rear end of the seed receiving hole, allows excess seeds in the seed receiving hole to return to the seed bin along the dovetail groove, making sowing stable, preventing seed damage, and improving sowing efficiency and quality. This hole design is applicable to all existing sowing devices.

[0011] (2) By setting up a large cone-shaped and a small cone-shaped pressing tooth, it is beneficial for the seeds to fall directly into the center of the hole, and the soil in the hole can be compacted, which is conducive to the growth of the seed roots.

[0012] (3) The structure of the seeding roller has been simplified, saving costs.

[0013] (4) The seeding bin is set on the front side, so that the seeds can be sown immediately after passing through the seeding bin, reducing the risk of seeds falling off during rotation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure in the prior art.

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] Figure 4 This is a top view of the seed-receiving hole of this utility model.

[0019] Figure 5 This is a detailed cross-sectional view of the seed-receiving hole of this utility model.

[0020] Figure 6 This is a cross-sectional schematic diagram of the cavitation tooth of this utility model.

[0021] Figure 7 This is a three-dimensional schematic diagram of the cavitation tooth of this utility model.

[0022] Figure 8 This is a schematic diagram illustrating the working principle of the seed-receiving hole of this utility model.

[0023] Figure 9 This is a schematic diagram of an embodiment of the seed bin of this utility model on the front side.

[0024] In the diagram: 1-frame, 2-pressing roller, 3-sowing roller, 4-seed bin, 5-pressing tooth, 51-large cone, 52-small cone, 6-seed receiving hole, 61-U-shaped groove, 62-dovetail groove, 7-seed bin baffle, 8-seed covering cloth. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0026] This utility model discloses a pressing-hole sowing device for a seedling tray seeder, comprising a frame 1, a pressing roller 2 rotatably mounted on the front end of the frame 1 and provided with a plurality of pressing teeth 5, a sowing roller 3 rotatably mounted on the rear end of the frame 1 and provided with a plurality of seed receiving holes 6, a seed bin 4 mounted on the frame 1 and located at the rear end of the support 1, a seed bin baffle 7 provided between the rear side of the seed bin 4 and the sowing roller 3, and a transmission mechanism for drivingly connecting the sowing roller 3 and the pressing roller 2. A seed-wrapping cloth 8 is provided on the frame 1 and adheres to the side wall of the sowing roller 3 facing the pressing roller 2. The above is a conventional configuration. Figure 2 , 4 As shown in Figure 5, the seed receiving hole 6 in this utility model is improved to have a U-shaped groove 61 at the bottom, and a dovetail groove 62 is provided on the upper rear side of the U-shaped groove 61. During equipment operation, after the seeds enter the seed chamber, as... Figure 8 As shown, when there are seeds that have not fully entered the seed receiving hole 6, the seed chamber baffle 7 will smoothly push them back into the seed chamber 4 along the dovetail groove 62 without squeezing or damaging the seeds or clogging the seed receiving hole 6. Example 2

[0027] Based on Example 1, such as Figure 3 , 6 As shown in Figure 7, the pressing teeth 5 are improved into pyramid-shaped pressing teeth 5 with large cones 51 superimposed with small cones 52, and are integrally formed using a mold. This structure allows the pressing teeth 5 to press out holes that are both large and deep, which is conducive to the seeds falling directly into the center of the hole. Combined with the dovetail groove design mentioned above, the sowing accuracy and precision of the seeds are greatly improved, further enhancing the sowing quality. Example 3

[0028] Based on the above embodiments 1 and 2, as follows Figure 9As shown, the seed bin 4 is positioned in front of the sowing roller 3, and the seed bin baffle 7 is positioned on the lower front side of the sowing roller 3. Testing has shown that even with lateral pressure within the seed bin 4, seeds can still enter the seed receiving hole 6. After passing through the seed bin baffle 7, seeds can be sown immediately, eliminating the need for the seed covering cloth 8 and simplifying the structure. Example 4

[0029] Based on the above embodiments 1, 2 or 3, the diameter of the U-shaped groove 61 is designed to be 2.2-2.6mm and the depth to be 2.6-3.0mm. The dovetail groove 62 is set at 1 / 2 of the U-shaped groove 61, and its length is approximately equal to the diameter of the U-shaped groove. It is a streamlined opening. Example 5

[0030] Based on the above embodiments 1, 2, 3 or 4, the distance between the seed bin baffle 7 and the sowing roller 3 is set to 0.5mm-0.8mm.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-hole sowing device for a seedling tray seeder, comprising a frame (1), a pressure roller (2), a sowing roller (3), and a seed bin (4), wherein the pressure roller (2) is provided with pressure teeth (5), and the sowing roller (3) is provided with seed receiving holes (6), characterized in that, Below the seed receiving hole (6) is a U-shaped groove (61), and a dovetail groove (62) is provided on the upper rear side of the U-shaped groove (61). A seed chamber baffle (7) is provided on the rear side of the seed chamber (4). The pressing teeth (5) are pyramid-shaped pressing teeth (5) with a large cone (51) superimposed with a small cone (52).

2. The hole-pressing seeding device of the seeding machine for the seedling tray according to claim 1, wherein, The U-shaped groove (61) has a groove diameter of 2.2-2.6 mm and a depth of 2.6-3.0 mm. The dovetail groove (62) is located at 1 / 2 of the U-shaped groove (61) and has a streamlined opening.

3. The hole-pressing seeding device of the seeding machine for seedling tray according to claim 1, wherein, There is a distance of 0.5mm-0.8mm between the seed bin baffle (7) and the sowing roller (3).

4. The hole-pressing seeding device of the seeding machine for seedling tray according to any one of claims 1-3, characterized in that, The seed bin (4) is located in front of the sowing roller (3), and the seed bin baffle (7) is located on the lower part of the front side of the sowing roller (3).

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