JP5319449B2 - Sowing equipment - Google Patents

Description

  The present invention relates to a sowing device, and in particular, to a sowing device for sowing seeds that are thin or very fine.

When raising seedlings of flowers, vegetables, etc., in general, seeds are placed in a tray in which a plurality of pots are arranged vertically and horizontally, a tray formed integrally with a synthetic resin, or a pot in which a plurality of pots are detachably aligned. They are trying to grow seedlings.
In such a tray, a predetermined amount of floor soil is put in each pot, and one or a predetermined number of seeds are sowed, and the tray is put in a house, and watering or the like is managed for growth. I am doing so.

These operations can be carried out in large-scale farms by setting up a large-scale dedicated planting plant, so it is possible to automate most of these operations. For farms of scale, these tasks are almost manual.
In such a manual work, the seeding work requires an inspection work such as thinning of seedlings after germination in each seedling pot when a predetermined number of seeds are contained in each seedling pot. When a seedling pot that does not enter is generated, the yield is deteriorated and the profitability is also adversely affected. Therefore, accuracy is required for the work.
In this sense, this sowing operation is the most troublesome and time consuming.

  In view of the above problems, the present applicant has an outer case that opens upward and an inner case that is slidably accommodated in the outer case, and stores a predetermined number of bare seeds at the bottom of the inner case. Possible seed storage holes are provided at regular intervals, and a seed discharge hole having a diameter larger than the seed storage hole is provided at the bottom of the outer case at the same regular intervals as the seed storage hole. A urging means for urging the inner case between the detachable side wall and the side wall of the inner case facing the side wall so as not to match the seed storage hole and the seed discharge hole; When seeding the naked seed, the inner case is slid against the pressing force of the pressing biasing means, and the seed storage hole and the seed discharge hole are matched, so that the naked seed stored in the seed storage hole is seeded. Seeds that are released from a discharge hole to a predetermined place and seeded Proposes a can device (Patent Document 1).

However, in the seed sowing device according to the previous proposal, in the case of a thin seed or a very fine seed, when the inner case is slid, the seed stored in the seed storage hole of the inner case is separated from the inner case and the outer case. There is a problem that it enters the rubbing part with the case, and the seeds are damaged or crushed.
In order to solve these problems, it is only necessary to make it so that there is no gap between the bottom surface of the inner case and the top surface of the bottom of the outer case, but in such a case, the problem of slipping of the inner case becomes worse. is there.

In addition, since seeds with a small thickness or very fine seeds cannot be sown with a machine, so-called coated seeds are also sold that are coated around the bare seeds to increase the particle size for easy handling.
However, this kind of coated seed is generally 2 to 3 times the price of bare seed, and there is a problem in terms of profitability.

JP 2008-136444 A

  The present invention has been proposed in view of the above problems, and it is possible to accurately sow seeds at a number of predetermined positions at once without damaging or crushing even one small seed stored in the seed storage hole. The seeds of the outer case are lightweight but rich in rigidity, and the seeds stored in the seed storage holes of the inner case do not enter the rubbing portion between the inner case and the outer case even with small bare seeds. It is an object of the present invention to provide a seed sowing device that can reliably discharge from a discharge hole.

  In order to achieve the above object, a seed sowing apparatus according to the present invention includes an outer case that opens upward, and an inner case that is slidably accommodated in the outer case, and has a bare seed on the bottom of the inner case. A number of seed storage holes that can be stored are transparently arranged at regular intervals, and a seed discharge hole that is larger than the maximum diameter of the seed storage hole is transparently provided at the bottom of the outer case at the same regular intervals as the seed storage hole. A pressing urging force that urges the inner case in such a direction that the seed storage hole and the seed discharge hole do not coincide with each other between the detachable side wall and the side wall of the inner case facing the side wall. Attach a sweeper sheet that covers the semicircular part of the seed storage hole on the lower surface of the bottom of the inner case so that it is positioned on the upper side of the inner case of the arc-shaped part, and press the urging force when seeding Slide the inner case against the pressing force of the means Sometimes, the seed storage hole and the seed release hole are accommodated by pushing the seeds that are going to enter the part where the inner case and the outer case face each other to the seed release hole side by the sweeper sheet, so that the seed storage hole is stored in the seed storage hole. The main feature is that the seeds are discharged from the seed discharge hole to a predetermined place and seeded.

  In the seed sowing apparatus according to the present invention, the seed storage hole drilled in the bottom of the inner case is formed in an inclined peripheral surface extending at the bottom, and the angle of the inclined peripheral surface of the seed storage hole is 10 It is also characterized in that it is set in a range from 30 degrees to 30 degrees and that a bottom plate reinforcing bar material is provided in a lattice shape on the bottom surface of the bottom of the outer case.

  Further, the seed sowing apparatus according to the present invention is such that a part of the bottom plate reinforcing bar member provided in a lattice shape on the bottom lower surface of the outer case also serves as a position defining portion of the seed sowing device, and the inner space of the inner case. The reinforcing bars are provided in a lattice shape, the reinforcing bars that come into contact with the bottom are provided with a communicating portion through which seeds can be circulated, and the seed storage holes formed in the bottom of the inner case are formed in the bottom of the outer case. It is also characterized in that a plurality of side walls are provided within a range that matches the drilled seed discharge hole, and that one side wall portion of the outer case is removable, and the inner case can be replaced from the side wall portion. To do.

  According to the seed sowing apparatus according to the present invention, first, a sweeper sheet that covers the semicircular portion of the seed storage hole is attached to the lower surface of the bottom of the inner case so as to be positioned on the upper side of the inner case of the arc-shaped portion. When seeds are sown, when the inner case is slid against the pressing biasing force of the pressing biasing means, the seed that is about to enter the portion where the inner case and the outer case face each other is separated from the seed discharge hole side by the sweeper sheet. The seed storage hole and the seed discharge hole are made to coincide with each other while being pushed out, so that the seed stored in the seed storage hole is discharged from the seed discharge hole to a predetermined place and seeded.

  Therefore, when the inner case is slid, if it is a thin seed or a very fine bare seed, this will try to enter the part where the inner case and the outer case face each other. Even if the seeds are very fine, they are caught by the sweeper sheet and pushed out to the seed discharge hole side. When the seed storage hole and the large-diameter seed discharge hole are matched, the sweeper sheet is pushed out by the sweeper sheet. The seeds are dropped and supplied to a predetermined position from the seed storage hole through the large-diameter seed discharge hole.

As a result, even a single bare seed or thin seed stored in the seed storage hole can be seeded accurately at a plurality of predetermined positions at once without being damaged or crushed.
At this time, in the case where the seed storage hole of the inner case is formed on the inclined peripheral surface that spreads at the bottom, even if the seed shape is angular, such as cocoon seed, the seed storage hole is entangled or clogged. There is an advantage that it can be surely released from the seed release hole without being done.

In addition, by providing reinforcing bars in a lattice shape in the inner space of the inner case to increase the rigidity of the inner case, the thickness of the bottom of the inner case can be reduced. There is an advantage that it can be stored accurately.
If the bottom plate reinforcing bar material is provided in a grid pattern on the bottom bottom surface of the outer case, or the reinforcing bar material is provided in a grid pattern in the inner space of the inner case, the bottom of the inner and outer cases will be stiffer and lighter. Can be planned.
In addition, in addition to the above-described effects, in addition to the above-described effect, one part of the bottom plate reinforcing bar material can also be used to easily and accurately align the seeding device with the seedling pot. There are advantages you can do.

  In addition, a bottom plate reinforcing bar material is provided in a lattice shape on the bottom surface of the bottom of the outer case, and a part of the bottom plate reinforcing bar material also serves as a position defining portion of the seeding device. Since the strength of the bottom of the inner case is increased and no distortion occurs, there is an advantage that the seeding device can be reduced in weight and the seeding workability can be improved.

  Furthermore, in the case where a plurality of seed storage holes formed in the bottom of the inner case are provided within a range that matches the seed discharge holes drilled in the bottom of the outer case, in addition to the above effects, even a very small seed can be used. There is an advantage that it can be seeded accurately.

  Moreover, since it can be used without crushing or damaging the bare seeds, the yield is good, and it is not necessary to use expensive coated seeds, and there is an advantage that the economic efficiency can be greatly improved.

  In addition, one side wall part of the four sides of the outer case can be attached and detached, and the inner case can be exchanged from the side wall part. There is also an advantage that the cost can be reduced.

These are the exploded perspective views of the use condition of the sowing apparatus which concerns on this invention. These are the side views of the use condition of the sowing apparatus which concerns on this invention. FIG. 2 is a longitudinal front view of a sowing apparatus according to the present invention. These are the vertical side views of the sowing apparatus which concerns on this invention. These are the longitudinal cross-sectional views which expanded the seed accommodation hole part of the seed sowing apparatus which concerns on this invention. These are the top views of the sweeper sheet | seat part which shows the positional relationship of the seed storage hole and seed discharge | release hole of the use condition of the seed sowing apparatus which concern on this invention. These are the expanded sectional views of the sweeper sheet | seat part which shows the positional relationship of the seed storage hole of the use condition of the seed sowing apparatus which concerns on this invention, and a seed discharge | release hole. These are the top views which expanded the sweeper sheet | seat part which shows the positional relationship at the time of sowing with which the seed storage hole and seed discharge | release hole of the use condition of the seed sowing apparatus which concern on this invention matched. These are the enlarged plan views which show the modification of the seed storage hole part of the seed sowing apparatus which concerns on this invention. These are perspective views which show the modification of the inner case of the sowing apparatus which concerns on this invention. These are the partial expansion perspective views of the modification of the inner case of the sowing apparatus which concerns on this invention.

Hereinafter, the most preferred embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a seed sowing apparatus according to the present invention in use, FIG. 2 is a side view, and reference numeral 1 in the figure indicates the seed sowing apparatus as a whole.
This seed sowing apparatus 1 is used by being placed above a seedling tray 2 and includes an outer case 3 and an inner case 4 slidably accommodated in the outer case 3.
The seedling raising tray 2 has a well-known structure in which cultivation pots 6 are provided at equal intervals vertically and horizontally from a rectangular upper surface whose four corners are supported by legs 5 with a synthetic resin.

The outer case 3 and the inner case 4 of the sowing device 1 are formed as shown in FIGS.
That is, the outer case 3 is formed in a shallow box shape that is opened upward by a synthetic resin, and seeds that are transparently provided on the bottom portion 16 of the inner case 4 described later at the bottom portion 7 at the same interval as the center interval of the cultivation pot 6. A seed discharge hole 8 larger than the maximum diameter of the storage hole 22 is formed.

  In addition, one side wall (the right side wall in FIGS. 1 and 3) 9 of the outer case 3 is detachable. The front and rear side wall portions 10 and the portion that wraps around the bottom portion 7 are integrally formed, and the portion that wraps around the front and rear side wall 10 portions is used as a fixing portion 11, and is fixed to the front and rear side walls 10 facing the fixing portion 11 with screws 12 It has a structure (see FIG. 1).

A plate-like projecting piece 15 that forms a part of a position defining tool 14 to be described later is suspended from the end of a portion 13 that wraps around the bottom portion 7 that forms one side wall 9 portion (see FIG. 3).
Further, as shown in FIGS. 3 and 4, a bottom plate reinforcing bar 31 is provided in a lattice shape on the lower surface of the bottom surface of the outer case 3, and a part 17 of the bottom plate reinforcing bar 31 protrudes downward. In addition, the position restricting tool 14 when using the sowing device 1 in cooperation with the projecting side 15 is constituted.
The position defining tool 14 has a seed discharge hole 8 formed in the bottom portion 7 of the outer case 3 formed in the seedling tray 2 when the protruding portion abuts on an edge portion of the seedling tray 2. Each pot 6 is positioned at the center.

Incidentally, by providing the bottom plate reinforcing bar 31 in the form of a lattice on the lower surface of the bottom surface of the outer case 3, the strength of the bottom portion 7 of the outer case 3 can be increased. Therefore, the thickness of the bottom portion 7 of the outer case 3 can be reduced to reduce the weight of the sowing device 1.
The inner case 4 of the seed sowing apparatus 1 is formed of a synthetic resin in a shallow box shape, and a ridge 19 is formed along the front and rear side edge portions of the bottom 16 as shown in FIG.
The side wall 21 of the inner case 4 facing the one side wall 9 portion of the outer case 3 is guided by the guide groove 20 formed in the corner of the outer case 3 so that the protruding rib 19 portion is one side wall of the outer case 3. It is slidably housed in the direction of contact with and away from the 9 portion (left and right in FIG. 1) (see FIG. 3).

The inner case 4 is provided with a small-diameter seed storage hole 22 at the same interval as the seed discharge hole 8 formed in the bottom of the outer case 3.
As shown in FIG. 5, the seed storage hole 22 has a straight hole 35 in the vicinity of the upper surface (t1) of the bottom 16 of the inner case 4, and a sloped peripheral surface 36 that extends in the bottom at the lower part. The lower end (bottom surface) portion is the maximum diameter D of the seed accommodation hole 22.
The angle θ of the inclined circumferential surface 36 is set in the range of 10 degrees to 30 degrees, and preferably 20 degrees.

That is, when the angle θ of the inclined peripheral surface 36 is less than 10 degrees, the seed entanglement preventing effect in the seed storage hole 22 is not seen, and when it exceeds 30 degrees, the seeds are the bottom surface of the inner case 4. And a phenomenon of being caught between the bottom surface of the outer case 3 was observed.
Further, for example, in the case of storing only one seed, the diameter of the diameter corresponding to the size (diameter) of the seed and the thickness of the bottom 16 are set, and in the case of a flat and thin seed, the bottom is adjusted to the thickness. A thickness T of 16 is set.

  Therefore, in the case of storing one seed, the thickness T of the bottom portion 16 is also thin, but the inner space of the inner case 4 is provided with a plurality of reinforcing crosspieces 24 across the front and rear to increase its rigidity. The reinforcing cross member 24 reliably prevents the bottom 16 formed thin from being bent or distorted.

Incidentally, in this example, the thickness T of the bottom portion 16 of the inner case 4 is 4 mm, the portion near the upper surface (t1) of the bottom portion of the inner case 4 is 0.5 mm, and the diameter d of the seed storage hole 22 on the upper surface of the bottom portion 16 of the inner case 4 is. Is 4.2 mmφ, the angle θ of the inclined circumferential surface 33 of the seed storage hole 22 is 20 degrees, and the diameter (maximum diameter) of the seed storage hole 22 formed in the lower surface of the bottom portion 16 of the inner case 4 is 5.4 mmφ. It has become.
The seed discharge hole 8 formed in the bottom 7 of the outer case 3 is 8 mmφ.

  Further, outside the seed storage hole 22 group in the front-rear direction, corners of the inner case 4 between the front-rear side wall 25 and the bottom and the vicinity thereof are formed in the seed storage part 26, and a reinforcing bar for the part is formed. Part of the material 24 is cut away to form a communication portion 27, and the seed storage portion 26 is communicated with the communication portion 27 (see FIG. 1).

The inner case 4 slidably housed inside the outer case 3 is normally biased by the pressing biasing means 28 so that the seed storage hole 22 and the seed discharge hole 8 do not match.
As shown in FIGS. 1 and 3, the pressing and biasing means 28 is provided between the outer side wall 9 of the outer case 3 and the side wall 21 of the inner case 4 facing the outer case 3. A coil spring 30 is provided that is supported by a bolt 29 that is fixedly attached to the side wall 21 of the inner case 4 through the detachable one side wall 9, and the outer case 3 can be attached and detached by the tension of the coil spring 30. The one side wall 9 portion and the side wall 21 of the inner case 4 are configured to be pressed and urged in a direction away from each other.

On the other hand, on the lower surface of the bottom 16 of the inner case 4, a sweeper sheet 32 is provided in the seed accommodation hole 22 portion as shown in FIGS. 1 and 6 to 8.
The sweeper sheet 32 is formed by forming a thin synthetic resin sheet having a thickness of about 0.3 mm into a disk shape having a hole having a diameter slightly larger than the seed storage hole 22 in the center portion, and forming a half arc shape. The halved arc-shaped halved portion 33 is formed by being stuck so as to be positioned on the seed discharge hole 8 side of the outer case 3.

That is, the sweeper sheet 32 that covers the semicircular portion of the seed storage hole is adhered to the lower surface of the bottom portion 16 of the inner case 4 so that the arc-shaped half portion 33 is positioned on the upper side of the inner case 4.
Thus, when the sweeper sheet 32 is made into a thin synthetic resin sheet, the gap between the lower surface of the bottom portion 16 of the inner case 4 and the upper surface of the bottom portion of the outer case 3 facing this surface is the thickness of the sweeper sheet 32. Since it floats, the inner case 4 can be slid with a light force.

A procedure for using the sowing apparatus 1 configured as described above will be described next.
First, naked seeds (not shown) are put in the naked seed reservoir 26 of the inner case 4 and the seed sowing apparatus 1 is shaken in the manner of paper milling, whereby the naked seeds of the seed reservoir 26 are removed from the bottom 16 of the inner case 4. The seed storage hole 22 stores a predetermined number of seeds, and the seed storage hole 22 is large enough to store only a predetermined number of seeds. Only a predetermined number of seeds are stored in the hole 22 accurately.
Next, the seed sowing apparatus 1 in which the seed is stored in each of the seed storage holes 22 is placed above the seedling raising tray 2 in which a predetermined amount of floor soil is put in each pot 6.

At this time, since the position of the outer case 3 on the seedling tray 2 is defined by the position defining tool 14, the seed discharge hole 8 formed in the bottom 7 of the outer case 3 is formed in the seedling tray 2. The pot 6 is placed in the state of being located at the center.
Thereafter, the inner case 4 is slid against the pressing biasing force of the pressing biasing means 28, and the seed storage hole 22 and the seed discharge hole 8 are matched from the state of FIGS. 6 and 7 to the state of FIG. As a result, the seed stored in the seed storage hole 22 is discharged from the seed discharge hole 8 of the outer case 3 to the center of each pot 6 of the seedling raising tray 2 and the seeding is finished.

  Here, when the inner case 4 is slid against the pressing urging force of the pressing urging means 28, even the thin seed that tries to enter the part where the inner case 4 and the outer case 3 face each other is used as the sweeper sheet. When the seed storage hole 22 and the seed discharge hole 8 are aligned with each other, the seed stored in the seed storage hole 22 is moved around the seed storage hole 22. Since the surface is an inclined peripheral surface 36 spreading downward, the seed storage hole 22 is not clogged and falls into the seed discharge hole 8 and is discharged from the seed discharge hole 8 to a predetermined place. Therefore, seeding can be performed accurately.

  By the way, when the size of the seed changes due to the change of the type of cultivation, the inner case 4 is removed by removing the screws 12 that fasten the removable side wall 9 of the outer case 3 to the front and rear side walls 10. The inner case 4 having the seed housing holes 22 having different sizes can be easily changed simply by replacing them in the reverse procedure.

Moreover, in the said embodiment, although the tray 2 for raising seedlings is what formed several pot-6 integrally, it is not restricted to such a thing, It can be used also when planting a bare seed directly in a planting place. It goes without saying.
In addition, when each bottom part 7 * 16 of the outer case 3 and the inner case 4 which forms the seed storage hole 22 and the seed discharge | emission hole 8 is made transparent, there also exists an advantage which can confirm the position which seeds a bare seed.
Furthermore, the bottom plate reinforcing bar 31 is not limited to a lattice shape, and can be formed in parallel to the lower surface of the bottom 7 of the outer case 3.

  Furthermore, in the above-described embodiment, the bottom plate reinforcing bar 31 is provided in a lattice shape on the bottom surface of the bottom surface of the outer case 3, and a part 17 of the bottom plate reinforcing bar 31 is protruded downward, so that the sowing device 1. However, it goes without saying that the position restricting tool 14 can be formed separately from the bottom plate reinforcing bar 31.

  In addition, in the above embodiment, the number of seed storage holes 22 formed in the bottom portion 16 of the inner case 4 is one in the drawing, but is not limited to this. For example, as shown in FIG. By providing a plurality of seeds within a range that coincides with the seed discharge hole 8 drilled in the bottom portion 7, even a very small seed can be stored one by one in one seed storage hole 22 and can be seeded from the seed discharge hole 8. Therefore, there is no case where a plurality of seeds are entangled in the seed storage hole 22 and do not fall into the seed discharge hole 8 as in the case of seeding by storing a plurality of seeds in one large seed storage hole 22, There is an advantage that a predetermined number of seeds can be seeded accurately.

  Further, in the above embodiment, a plurality of reinforcing bars 24 are provided at substantially equal intervals in the inner space of the inner case 4 as shown in FIG. In addition to 24, reinforcing bars 38 are provided at equal intervals in the left-right direction to further increase the strength of the bottom 16 of the inner case 4, thereby reducing the thickness of the bottom 16 and sowing fine bare seeds. Can be matched.

  In this case, as shown in FIG. 11, seeds from the seed storage unit 26 are circulated so that the seeds are uniformly supplied to the portions of the left and right reinforcing bars 38 that are in contact with the bottom 16 of the inner case 4. It is necessary to provide a possible communication part 39.

DESCRIPTION OF SYMBOLS 1 ... Seeding device 3 ... Outer case 4 ... Inner case 7 ... Outer case bottom 8 ... Seed discharge hole 10 ... Front and rear side walls 14 of outer case ... Position regulation Ingredient 16 ... Bottom 22 of the inner case ... Seed storage holes 24, 38 ... Reinforcing bar material 26 at the bottom of the inner case ... Seed reservoirs 27, 39 ... Communication part 28 ... Press urging means 31 ... bottom plate reinforcing bar 32 ... sweeper sheet 33 ... halved portion 36 ... inclined peripheral surface

Claims (8)

  The upper case has an outer case that is open and an inner case that is slidably accommodated in the outer case. A seed accommodating hole that can accommodate a predetermined number of bare seeds is provided in the bottom of the inner case so as to be transparent at equal intervals. At the bottom of the case, a seed discharge hole having a diameter larger than the maximum diameter of the seed storage hole is provided at the same interval as the seed storage hole, so that one side wall of the outer case is detachable. A pressure biasing means for pressing and biasing the inner case in a direction not matching the seed storage hole and the seed discharge hole is provided between the side wall of the inner case facing to the bottom of the seed storage hole. A sweeper sheet covering the half-circumferential part is attached so as to be positioned on the upper side of the arc-shaped part inner case, and when the seeds are sown, the inner case is slid against the pressing biasing force of the pressing biasing means. , It also enters the part where the inner case and the outer case face each other The seed stored in the seed storage hole is released from the seed release hole to a predetermined place by matching the seed storage hole and the seed release hole while extruding the seed to the seed release hole side with the sweeper sheet. A sowing apparatus characterized by being configured to sow.   The seed sowing apparatus according to claim 1, wherein a seed storage hole drilled in a bottom portion of the inner case is formed on an inclined peripheral surface extending at the bottom portion.   The seed sowing apparatus according to claim 2, wherein the angle of the inclined peripheral surface of the seed storage hole is set in the range of 10 to 30 degrees.   The seed sowing apparatus according to any one of claims 1 to 3, wherein a bottom plate reinforcing bar material is provided in a lattice shape on a bottom lower surface of the outer case.   The seed sowing apparatus according to claim 4, wherein a part of the bottom plate reinforcing bar member provided in a lattice shape on the bottom lower surface of the outer case also serves as a position defining portion of the sowing apparatus.   6. A reinforcing bar material is provided in a lattice shape in the inner space of the inner case, and a communicating part through which seeds can be distributed is provided in the reinforcing bar material contacting the bottom. The sowing apparatus according to item 1.   The seed storage hole formed in the bottom part of the inner case is provided with a plurality within a range that matches the seed discharge hole formed in the bottom part of the outer case. The sowing apparatus according to item 1.   The seed sowing apparatus according to any one of claims 1 to 6, wherein one side wall portion of the four surroundings of the outer case is detachable and the inner case can be replaced from the side wall portion.

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