JP2020058372A - Dissemination device - Google Patents

Abstract

To provide a dissemination device capable of surely and efficiently sowing a seed one by one to a seed hole of a cultivation field.SOLUTION: A seed storage container 10 to which seeds are supplied, vibrates with torsion, therefore seeds are transported on a spiral seed transport line and seeds are made to reach a seed attraction point (seed pocket). A laser is always radiated from a laser sensor 11 to the seed attraction point, and if a laser light radiation reflection amount detection result on the laser sensor is equal to or smaller than a predetermined value, the seed storage container oscillates by a torsion vibration part feeder, for transporting seeds and making the seeds to reach the seed attraction point again and lowering a seed attraction tip pad attached to a vaccination arm 5, then the seed storage container performs pressure reduction and suction for attracting seeds and putting the seeds into holes 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seeding device for supplying seeds to a cultivated place for raising seedlings, and particularly to a seeding device suitable for use in hydroponic cultivation or the like, which can surely sow a single seed into a seeding hole of the cultivated place. .

  Patent Document 1 discloses a seeding device which has a problem of sowing seeds one by one in seedling holes in a cultivation place as shown in FIG. In the seeding device shown in FIG. 13, the seeding body 81 includes a vacuum chamber 81a, a seed adsorption plate 81b, and a seeding auxiliary plate 81c. When seeds are placed on the seed adsorption plate 81b and the seeding body 81 is swung by the left and right rocking device 61 and the back and forth rocking device 71 while depressurizing the vacuum chamber 81a by the vacuum device 31d, seeds are adsorbed seed by grain. It is adsorbed in each hole of the plate 81b. After that, the sowing main body 81 is rotated by 180 ° by the front-back swing device 71, and the cultivating place 211 is raised by using the elevating device 231 to bring the sowing auxiliary plate 81c and the cultivating place 211 close to each other. Then, the operation of the vacuum device 31d is stopped, and the seed adsorbed on the seed adsorbing plate 81b is dropped into the sowing holes of the cultivation area 211 via the sowing auxiliary plate 81c. After sowing, the sowing body 81 is rotated again by 180 ° and returned to its original state, while the cultivated land is transported to another position by the conveyor device 221 and replaced with a new cultivated land.

Japanese Patent Laid-Open No. 2000-106716

However, the seeding device disclosed in Patent Document 1 has the following problems. That is, in the method in which the seed body 81 is rocked by the left and right rocking device 61 and the back and forth rocking device 71 to adsorb the seeds one by one to the holes of the seed adsorbing plate 81b, the seed adsorbing depends on the chance. The number of seeds entering each hole of the plate 81b may be one or more, and it is actually difficult to reliably supply one seed to each hole of the seed adsorbing plate 81b. There was a problem that there was no certainty.
Therefore, as a countermeasure, it was necessary to pre-coat a large number of species having different sizes to form a uniform spherical shape. However, performing such pretreatment itself was a factor that reduced productivity.

  In view of the above problems in the prior art, the present invention is to provide a seeding device capable of efficiently and reliably seeding seeds one by one in a seeding hole of a cultivation place.

  That is, the seeding device of the present invention is a seeding device for sowing in a plurality of holes opened in the cultivation area, the inoculation arm, adsorption means for adsorbing seeds to the inoculation arm, the inoculation The seed supply means comprises a seed supply means for storing the seed to be adsorbed to the arm, and the seed supply means includes a seed storage container, and the seed storage container has a spiral or linear continuous seed transfer line from inside to below. The seed transfer line is provided with a seed adsorption point for adsorbing one grain of the seed by the adsorption means of the inoculation arm, and a seed pocket for attitude control of each seed is provided at the seed adsorption point. It is characterized by

  According to the seeding device of the present invention, seeds can be adsorbed one by one by the inoculation arm by controlling the posture of the seeds in the seed pocket of the seed adsorption point one by one, and the seeds can be adsorbed in the holes in the cultivation area. Can be inserted.

It is a whole lineblock diagram of a seeding device concerning an embodiment of the invention. It is another whole block diagram of the seeding apparatus which concerns on embodiment of this invention. It is a partially expanded view of the seeding device according to the embodiment of the present invention. 4A is a partially enlarged view of the seeding device according to the embodiment of the present invention, and FIG. 4B is another partially enlarged view of the seeding device according to the embodiment of the present invention. (C) is still another partially enlarged view of the seeding device according to the embodiment of the present invention. It is a partial perspective view of the seeding apparatus which concerns on embodiment of this invention. It is a partially expanded view of the seeding device which concerns on embodiment of this invention. It is a flow chart of a seeding process using a seeding device concerning an embodiment of the invention. It is a partial perspective view of the seeding apparatus which concerns on other embodiment of this invention. It is the (a) other partial perspective view of the seeding apparatus which concerns on other embodiment of this invention, and the (b) partial expanded perspective view. It is a further another partial perspective view of the seeding apparatus which concerns on other embodiment of this invention. It is a fragmentary sectional view of the seeding device concerning other embodiments of the present invention. (A) Partial perspective view of a seeding device according to another embodiment of the present invention, (b) Another partial perspective view of a seeding device according to another embodiment of the present invention, (c) Fig. 12 (a) 12 is a partial plan view corresponding to FIG. 12, (d) a partial plan view corresponding to FIG. 12 (b), and (e) a schematic explanatory view of a seeding device according to another embodiment of the present invention. It is explanatory drawing of a prior art.

  Hereinafter, the present invention will be described in detail with reference to the drawings. First, the overall configuration of the present invention will be described with reference to FIGS.

As shown in FIG. 1 and FIG. 2, a seeding device 4 for sowing into a plurality of holes 3 provided in a cultivated land 2 arranged on a seed transfer base 1 includes an inoculating arm 5 and an inoculating arm. An adsorption means for adsorbing the seeds to the seedling 5 and a seed supply means 6 for storing the seeds to be adsorbed on the inoculation arm 5 are provided.
The inoculation arm 5 comprises a swivel arm 9 driven by a swivel actuator 8 which is moved by an electric actuator 7.
The seed supply means 6 includes a seed container 10 and a laser sensor 11 attached to the seed container 10.
As shown in FIG. 3, the seed storage container 10 is provided with a seed transport line 13 that continuously transports the seed 12 from the bottom to the top in a spiral manner inside the seed storage container 10. A seed adsorption point 14 is provided in the vicinity.

In the seeding device 4 of the present invention, a seed pocket 15 for controlling the posture of each seed 12 is provided at the seed suction point 14 for sucking one seed 12 by the suction means of the inoculation arm 5.
As shown in FIGS. 4A to 4C, in the present embodiment, the seed pocket 15 is provided on the seed prevention line 16 along the seed conveyance line 13 and on the seed prevention line 16 and the seed conveyance line 13. It is formed by the seed pocket forming member 17 arranged. The seed pocket 15 formed by the fall prevention guide 16, the seed conveying line 13, and the seed pocket forming member 17 is, for example, 0.5 mm thick, 1.0 mm wide, and 3.0 mm long, and the seed pocket 15 in the vicinity thereof is used as a reference. The seed 12 having a size is set to be able to be stored.

In the seeding device 4 of the present invention, only one grain of seed 12 which is stored in the seed pocket 15 in the same orientation as the posture is carried to the preset hole 3 of the cultivation area 2 and stored therein. For example, with the seed 12 having a thickness of 0.5 mm, a width of 1.0 mm, and a length of 3.0 mm as a reference, the seed 12 having a size in the vicinity thereof is selected and seeded.
The fall prevention guide 16 and the seed pocket forming member 17 forming the seed pocket 15 are detachable and the position thereof can be corrected so that the fall prevention guide 16 and the seed pocket forming member 17 having different sizes and shapes can be attached to the seed suction point 14. It is made variable so that the seeds 12 of different varieties can be sown by mounting the seeds 12 on the.

As shown in FIG. 5, the seed storage container 10 includes a torsional vibration part feeder 18 as a torsional vibration means, and the seeds storage container 10 including the torsional vibration part feeder 18 is torsionally vibrated to generate a seed transfer line. The seed 12 to be seeded is transported on the top 13.
In this torsional vibration parts feeder 18, a leaf spring 20 is arranged on a base 19 in an inclined manner, and the upper end side of the leaf spring 20 is connected to the vibration parts feeder 18, that is, the lower end side of the seed container 10. The leaf springs 20 are provided at a plurality of positions so as to be inclined in the same direction along the circumferential direction of the seed container 10. By driving an electromagnet (not shown) arranged close to these leaf springs 20 with an alternating current, a torsional vibration is generated in the seed container 10 with respect to the base 19. Due to this vibration, the seeds 12 put into the seed storage container 10 are sent upward (in the direction of arrow 21) along the seed transport line 13 which is a spiral track formed inside the side wall 10a of the seed storage container 10. To be

As shown in FIG. 3, the seed transfer line 13 is formed so as to be gradually narrowed, and as a result, there are two points, a position A near the seed adsorption point 14 and a position B far from the seed adsorption point 14 in the line along the seed transfer line 13. In relation, the seed transfer line 13 at the near position A is provided with two points AB that are narrower than the width of the seed transfer line 13 at the far position B, and at the close position A, the seed transfer line 13 is one of the seeds 12 to be seeded. The width is about the size of a grain.
The seeds 12 to be sown are not the same in size even if they are the same variety. However, it is necessary to select and sow the seeds 12 as uniform as possible into the preset holes 3 of the cultivation area 2.
In the seeding device 4 of the present embodiment, the width of the seed transport line 13 at the near position A is two smaller than the width of the seed transport line 13 at the far position B, and as a result, the size at which the near position A can be passed. Only seed 12 of No. 1 is subject to sowing. Further, as a result, the direction of the seed becomes constant, and only one grain is stored in the seed pocket (= 1 posture is controlled for each grain), so that a portion where the suction pad cannot sufficiently adhere is adsorbed, or a plurality of grains are adsorbed simultaneously. There is nothing, so it can be surely adsorbed.
In addition, the tip of the suction pad is made of rubber, or by fixing it through rubber, springs, etc., so that it makes elastic contact with the seeds, so that the size of the seeds may vary slightly after selection. Can be surely adsorbed.

The width of the seed conveying line 13 is made variable by adjusting the position of the variable member 22. This makes it possible to change the size of the seeds 12 that can pass through the close position A and select the seeds 12 of different varieties.
The seed suction tip pad 23, which is the suction means of the inoculation arm 5, is capable of vacuum suction and air blowing. As a result, a detection unit configured to detect the presence, type, and suitability of the seed 12 by the pressure when the seed suction tip pad 23 is decompressed is configured. That is, when the pressure detected by the seed suction tip pad 23 during the vacuum suction is excessive, it is determined that the seed 12 is absent, or the seed 12 is small or defective. In some cases, the seed 12 stored in the seed pocket 15 is too small to be adsorbed to the seed adsorption tip pad 23. In such a case, the seed pocket 15 is cleaned and emptied by blowing air from the seed adsorption tip pad 23, and the seed adsorption tip pad 23 returns to the standby position.

The laser sensor 11 irradiates the seed adsorption point 14 with a laser in order to detect the timing of vibration by the torsional vibration parts feeder 18, and detects the reflected laser light from the seed adsorption point 14.
The presence or absence of the seed 12 at the seed adsorption point 14 is determined based on the laser light irradiation reflection amount detection result of the laser sensor 11, and the torsional vibration part feeder 18 vibrates at a timing when the seed adsorption point 14 does not have the seed 12. The seed 12 is fed on the seed transport line 13.

The seeding process using the seeding device 4 of the present invention described above will be described with reference to the flowchart of FIG. 7.
The seed storage container 10 supplied with the seed 12 is torsionally oscillated, whereby the seed 12 is transported on the spiral seed transport line 13, and the seed 12 reaches the seed adsorption point 14 (seed pocket 15).
The seed adsorption point 14 of the seeding device 4 is constantly irradiated with laser from the laser sensor 11, and it is determined whether or not the numerical value of the laser light irradiation reflection amount detection result of the laser sensor 11 is above a certain level. Specifically, this is performed by using the difference between the applied irradiation amount and the reflection amount detected from the reflection amount detection result of the laser sensor 11.

When the value obtained by the above calculation is less than or equal to the predetermined value, the seed container 10 is vibrated by the torsional vibration parts feeder 18, the seed 12 is conveyed, and the seed 12 is again sucked by the seed adsorption point 14. To reach.
When the obtained value is equal to or more than the determined value, the seeding device 4 lowers the seed adsorption tip pad 23 attached to the inoculation arm 5.
Then, the seed suction tip pad 23 lowered to the seed suction point 14 sucks the seed 12 under reduced pressure to suck the seed 12 and determine whether the suction pressure is within a certain range. Specifically, this is performed by comparing the suction pressure when a predetermined desired seed 12 is adsorbed with the suction pressure obtained as a result of decompression suction.
When the suction pressure is not within a certain range, air is blown from the seed adsorption tip pad 23 to empty the seed pocket 15 portion, and the inoculation arm 5 is raised to return to the standby position. Then, after the seed 12 is made to reach the seed adsorption point 14 again, the same judgment is made.
When the suction pressure is within a certain range, the inoculation arm 5 rotates to carry the seed 12 to the preset position of the hole 3 in the cultivation area, and the seed 12 is put into the hole 3.

Hereinafter, another embodiment of the present invention will be described in detail with reference to FIGS. As shown in FIGS. 8 and 9, in this embodiment, the seed container 10 is formed by assembling the seed transport line component 13a and the variable member 22a which is separate from the seed transport line component 13a.
In the state where the seed transfer line component 13a and the variable member 22a are assembled in this way, the seed transfer line 13 up to the seed pocket 15 supports the lower surface of the seed 12 and transfers the seed 12 while the placing surface 13b is the seed transfer line. A side wall surface 22b formed by the component 13a and supporting a side portion of the seed 12 along the seed conveying line 13 is formed by the variable member 22a. Therefore, it is possible to sort and convey various types of seeds 12 by setting the shape and size of the variable member 22a variously using the same seed conveying line component 13a.
As shown in FIGS. 10 and 11, the seed transfer line component 13a is made of, for example, an aluminum alloy and has an integral structure itself. On the other hand, as shown in FIGS. 12A to 12D, the variable member 22a is molded by a 3D printer, for example, using a resin according to the specifications such as the kind of seed and the required size of seed.

  The variable member 22a shown in FIGS. 12 (a) and 12 (c) has a shape that forms the conveyance line 13 for a narrow seed, and is capable of uniformly handling a small seed. The variable member 22a shown in FIGS. 12 (b) and 12 (d) has a shape that forms the transport line 13 for a seed having a relatively large width, and is capable of uniformly handling a seed having a large size.

  It has been empirically made clear that it often happens that two seeds 12a and 12b are accidentally stacked on the seed transfer line 13 as shown in FIG. 12 (e). It was This kind of overlap occurs regardless of the size of the species. In this case, by providing the small seed trap 13d at a position corresponding to the size of the seed 12b to be sorted on the seed transfer line 13, the seed 12b and the seed 12a conveyed below the small seed trap 13d are distinguished. The seed 12a transported on the small seed trap 13d is shaken off by the torsion vibration of the seed storage container 10, and the seed 12b transported under the small seed trap 13d is selected as the seed to be selected.

The seed trap 13d is formed integrally with the variable member 22a so as to project from the side wall surface 22b to above the mounting surface 13b. Therefore, the seed trap 13d extends along the seed transfer line 13 and along the mounting surface 13b of the seed transfer line 13. It is provided at a position above T <S <2T.
T: Thickness of seed 12b to be selected S: Distance between seed mounting surface of seed transport line 13 and lower surface of seed trap 13d

4 ... Seeding device, 12 ... Seed, 10 ... Seed storage container, 13 ... Seed transport line, 14 ... Seed adsorption point, 15 ... Seed pocket, 11 ... Laser sensor , 18 ... Torsional vibration parts feeder, 5 ... Inoculation arm, 23 ... Seed adsorption tip pad, 3 ... Hole.

Claims (14)

A seeding device for sowing into a plurality of holes opened in a cultivation area, comprising: an inoculation arm, an adsorption means for adsorbing a seed to the inoculation arm, and a seed to be adsorbed to the inoculation arm. The seed feeding means comprises a seed feeding means, and the seed feeding means is provided with a seed feeding container, and the seed feeding container is provided with a seed feeding line continuous in a spiral or straight line from the lower side to the upper side inside thereof. Is provided with a seed adsorption point for adsorbing one seed by the adsorption means of the inoculation arm, and a seed pocket is provided at the seed adsorption point for controlling the posture of each seed. The seeding device according to claim 1, wherein the seed container includes a vibrating unit. The seeding device according to claim 1 or 2, wherein the seed conveying line includes two points having a width narrower at a position closer to the seed adsorption point and at a position farther from the seed adsorption point than at a position closer to the seed adsorption point. The seeding device according to claim 1, wherein the seed conveying line has a variable width. The seeding device according to claim 1, wherein the seed pocket is variable. The seeding device according to any one of claims 1 to 5, wherein the suction means is capable of performing vacuum suction and air blowing. The seeding device according to any one of claims 1 to 6, further comprising a detection unit that detects the presence or absence of a seed, a type, and suitability by the pressure when the pressure is reduced by the adsorption unit. The seeding device according to claim 7, wherein air is blown from the adsorbing means based on a seed presence / absence detection result of the detecting means. The seeding device according to claim 1, further comprising a laser unit that irradiates the seed adsorption point with a laser. When the seed adsorbed to the adsorption means of the inoculation arm at the seed adsorption point is transported by the inoculation arm to the position of the preset hole of the cultivation area, the adsorption operation of the adsorption means is released, The seeding device according to any one of claims 1 to 9, wherein the seed is put in a hole of a cultivation place.   The seed conveying line is formed by assembling a seed conveying line component and a variable member that is molded separately, to form a seed conveying line.   In the state where the seed transfer line component and the variable member are assembled, the seed transfer line up to the seed pocket has a placement surface that supports the lower surface of the seed and transfers the seed, and is formed by the seed transfer line component along the seed transfer line. The seeding device according to any one of claims 1 to 9, wherein a side wall surface that supports a side portion of the seed is formed by a variable member.   The seeding device according to any one of claims 1 to 9, wherein the variable member is molded by a 3D printer. 10. The seeding apparatus according to claim 1, wherein a seed trap is provided at a position of T <S <2T above the seed transport line along the seed transport line.
T: Thickness of seed 12b to be selected S: Distance between seed mounting surface of seed transport line 13 and lower surface of seed trap 13d

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