JP2019180257A - Thick/thin seeding device for nursery container and thick/thin seeding method for nursery container - Google Patents

Abstract

To provide a thick/thin seeding device for a nursery container that enables achieving the seeding work from thick seeding to thin seeding, achieving equal seeding even if being the thin seeding, and achieving even high-density thick seeding of massive seed.SOLUTION: A thick/thin seeding device is provided as follows: a horizontal axis feeding roll 15 for supplying seeds to a nursery container being transferred by a carriage 1 is provided below a feed hopper; feeding recesses 16 being parallel to the bus direction of the horizontal axis feeding roll 15 and formed in a horizontal groove-shape are provided in the rotating direction of the horizontal axis feeding roll 15 in an outer circumferential surface of the horizontal axis feeding roll 15; a roll outer surface is provided between the feeding recesses 16 adjacent to the rotating direction and the axial direction of the horizontal axis feeding roll 15; the feeding recesses 16 and the roll outer surface are arranged and configured so as to be alternate and in a staggered manner in the rotating direction and the axial direction of the horizontal axis feeding roll 15; a seed return rotating brush 19 is provided in the feeding recesses 16; and the rotational speed of the horizontal axis feeding roll 15 and the seed return rotating brush 19 is configured so as to be changed to the thick seeding with a large feeding amount of seeds and the thin seeding with a small feeding amount of seeds.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sowing apparatus and method for thick and thin sowing for a seedling container for sowing seeds (seeds) in a seedling container being transferred.

Conventionally, the structure which provided the horizontal axis | shaft feeding roll which formed the horizontal groove-shaped feeding recessed part in the outer peripheral surface under the supply hopper is well-known (refer patent document 1).
Conventionally, a configuration in which a horizontal axis feeding roll is formed by stacking ring-shaped ring plates having a predetermined thickness and feeding recesses are arranged in a staggered manner is known (see Patent Document 2).

JP 2012-85558 A Japanese Patent Laid-Open No. 2007-12962

Of the known examples, the feeding recess of the former horizontal axis feeding roll was formed with a horizontal groove-shaped feeding recess in a straight line parallel to the generatrix direction of the horizontal axis feeding roll. In thin sowing with a reduced sowing amount), as shown in FIG. 4, there is a problem that the interval between seed rows sowed in the direction of transfer of the seedling container is widened and the seedling container is not uniformly seeded.
That is, sowing work is performed in order to obtain planted seedlings to be transplanted to a field by a rice transplanter, and sowing methods for sowing seeds in seedling containers are known.
This sowing method includes a so-called thick sowing method in which many seeds are sown in one seedling container to reduce the production cost of planted seedlings, and is selected in a relatively good seedling environment.
On the other hand, there is a thin sowing method that makes it possible to grow seedlings for a long time without being as dense as possible, and is selected in a place where the seedling environment is relatively severe.
And in the conventional sowing apparatus, the horizontal axis | shaft feeding roll which provided the feeding recessed part with various space | intervals is mounted, and it is made into the exclusive machine of thick sowing or thin sowing.
Of the known examples, the latter feeding roll has feeding recesses arranged in a staggered manner, but is a feeding recess into which a single grain or two seeds enter, and has a rectangular shape with the same vertical and horizontal width. Arranged in a so-called checkered pattern, the amount of seed that fits into the feeding recess is limited and cannot be used for thick sowing. In addition, since it is not a thin sowing that presupposes a thick sowing response, it is not possible to combine thick sowing and thin sowing.
That is, in the latter known example, when one seed fits into one feeding recess, in FIG. 11 of the known example, the two feeding recesses are staggered in the axial direction. Even if two or three seeds are fitted, it is not possible to fit more seeds, so thick seeding is impossible.
The present invention makes it possible to realize the sowing operation from thick sowing to thin sowing while using the same horizontal axis feeding roll by devising the shape and arrangement of the feeding recess, and even in thin sowing This is a dual-use configuration that can realize sowing and achieve high-density thick sowing of a large amount of seeds.

According to the first aspect of the present invention, a horizontal axis feeding roll 15 for supplying seeds to the seedling raising container A being transferred by the transfer stand 1 is provided below the supply hopper, and the horizontal axis feeding roll 15 is provided on the outer circumferential surface of the horizontal axis feeding roll 15. A horizontal groove shape with a predetermined length in which a plurality of seeds are fitted in parallel to the generatrix direction of the horizontal axis feeding roll 15 and having a predetermined width in which approximately one seed can be fitted in the rotation direction of the roll 15. The feeding recesses 16 formed in the horizontal shaft feeding roll 15 are arranged in parallel in the rotational direction and the axial direction of the horizontal axis feeding roll 15, and the feeding concave parts 16 adjacent to the rotational direction and the axial direction of the horizontal axis feeding roll 15 are provided. A roll outer surface portion 24 having substantially the same area as that of the feeding recess 16 is provided between the feeding recess 16 and the roll outer surface portion 24. The roll recessing surface 16 and the roll outer surface portion 24 are alternately arranged in the rotation direction and the axial direction of the horizontal axis feeding roll 15. And more than the rotational direction of the horizontal axis feeding roll 15 A seed return rotating brush 19 that is arranged in a zigzag pattern so as to be longer in the center direction and sweeps back the seeds that are not fitted in the feeding recess 16 on the slightly lower side of rotation than the horizontal axis feeding roll 15. Thick sowing for seedling raising containers, which is configured to change the rotation speed of the horizontal axis feeding roll 15 and the seed return rotating brush 19 to thick sowing with a large amount of seed feeding and thin sowing with a small amount of seed feeding. This is a combined sowing device.
In the invention of claim 2, the horizontal axis feed roll 15 and the seed return rotary brush 19 are slow to reduce the rotational speed of the horizontal axis feed roll 15 and the seed return rotary brush 19 in the thin sowing state, and the thick sowing. In the state, the raising speed of the horizontal axis feeding roll 15 and the seed return rotary brush 19 is increased, and the seedling raising seedling in which the increase in the rotational speed of the seed return rotary brush 19 is set lower than the rotational increase rate of the horizontal axis feeding roll 15 is set. This is a sowing device for both thick and thin sowing for containers.
According to a third aspect of the present invention, the seed return rotating brush 19 is configured such that the position of the seed returning rotary brush 19 can be adjusted with respect to the outer peripheral surface of the horizontal axis feeding roll 15, and the tip of the seed returning rotating brush 19 is in the feeding recess 16 in the thin sowing state. The seedlings are configured so that a predetermined gap can be set between the tip trajectory of the seed return rotary brush 19 and the outer peripheral surface of the horizontal shaft feeding roll 15 in the thick sowing state. This is a sowing device for both thick and thin sowing for containers.
According to a fourth aspect of the present invention, the feeding recess 16 has a width in the rotation direction set to a predetermined width H in which approximately one seed in a lateral direction enters, and the depth of the seeds in the feeding recess 16 is in the depth direction. This is a sowing device for thick seeding and thin sowing for seedling containers constructed to have a predetermined depth F that overlaps and fits.
In the invention of claim 5, the feeding recess 16 has a horizontally elongated groove shape in which the length in the axial direction of the horizontal axis feeding roll 15 is at least five times the width in the rotational direction of the horizontal axis feeding roll 15. The feeding recess 16 adjacent to the rotation direction of the horizontal axis feeding roll 15 is formed at a distance from the width of the feeding recess 16 positioned in the rotation direction of the horizontal axis feeding roll 15. The feeding recess 16 adjacent in the axial direction is a thick sowing and seeding device for seedling containers configured to be located away from the length of the feeding recess 16 positioned in the axial direction of the horizontal feeding roll 15. Is.
The invention of claim 6 is configured such that the horizontal axis feeding roll 15 is formed by stacking a plurality of ring-shaped ring plates 30 having a predetermined thickness in the axial center direction of the horizontal axis feeding roll 15. On the outer surface side, when the ring plate 30 is overlapped, the concave portion 31 that becomes the feeding concave portion 16 of the horizontal axis feeding roll 15 and the roll outer surface portion 24 are alternately provided in the rotation direction of the horizontal axis feeding roll 15, The concave portion 31 is sized to fit approximately one seed, and two concave portions 31 are juxtaposed in the axial direction of the horizontal axis feeding roll 15 on one ring plate 30, and are fed out at the boundary between the two concave portions 31. The seedling container is provided with a slit 17 in which a scraping knife 18 for dropping seeds clogged in the recess 16 is fitted.
According to the seventh aspect of the present invention, each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 of a mounting shaft 36 to be inserted so as to penetrate the ring plate 30 at a predetermined position on the inner surface side. This is a thick sowing and seeding device for a seedling container provided with a protruding portion 41 on one side of the portion 40 and a fitting hole 42 on which the protruding portion 41 is fitted on the other side.
According to the eighth aspect of the present invention, the horizontal axis feeding roll 15 for supplying seeds is rotated below the supply hopper at a position above the seedling raising container A being transferred by the transfer means of the transfer table 1. In the method of seeding seedling container A with seeds fitted into feeding recess 16 on the outer peripheral surface, in a thin sowing state, horizontal axis feeding roll 15 is rotated at a predetermined low speed, and seed return is performed above horizontal axis feeding roll 15. The tip of the rotary brush 19 is swept back with the seed located on the upper side in the feeding recess 16, and a plurality of seeds are fitted in the feeding recess 16 of the horizontal groove in a single row, so that the horizontal shaft feeding roll 15 The seedling container A is staggered so as to alternate with each other in the rotational direction and the axial direction and is longer in the axial direction than the rotational direction of the horizontal feeding roll 15, and in the thick sowing state, the horizontal axis Feeding roll 15 and seed return rotating brush 9 is rotated faster than the thin sowing state, and the rotation speed of the seed return rotary brush 19 is decreased as compared with the rotation increase rate of the horizontal axis feeding roll 15, and at this time, The tip of the seed return rotating brush 19 is rotated with a predetermined gap between the outer peripheral surfaces of the horizontal axis feeding roll 15 so that the seeds do not pass through, and the seeds are fed three times or more compared to the thin sowing state. 16 and sowing, so that thick sowing and thin sowing can be sowed by the same horizontal axis feeding roll 15, so that a thick sowing and thin sowing method for seedling containers is used.

In the first aspect of the present invention, the feeding recess 16 of the horizontal shaft feeding roll 15 is formed in a horizontal groove shape, the roll outer surface portion 24 having substantially the same area is provided between the adjacent feeding recesses 16, and the feeding recess. 16 and the roll outer surface portion 24 are arranged in a zigzag shape that is longer in the axial direction than the rotation direction, and the rotation speed of the horizontal axis feed roll 15 and the seed return rotary brush 19 can be changed. Although it is the horizontal axis feeding roll 15, it is possible to realize the combined use of thick sowing and thin sowing, and in thin sowing, the seed group G fitted in the feeding recess 16 and the space K having the same size as the seed group G. Can be sowed so as to be alternately staggered in the width direction and the transfer direction of the seedling container A, and further seeded evenly throughout the seedling container A to obtain a healthy seedling seedling.
In the invention of claim 2, since the increase in the rotational speed of the seed return rotary brush 19 is set low in the thick sowing state, seed scattering and feeding recesses due to excessive sweep back action of the seed return rotary brush 19 The decrease in the number of seeds fitted to 16 can be prevented, so that thick seeding can be carried out smoothly, and a combined use of thick sowing and thin sowing can be realized.
In the invention of claim 3, the seed return rotary brush 19 is configured to be position adjustable with respect to the outer peripheral surface of the horizontal axis feeding roll 15, and the tip of the seed return rotary brush 19 faces the feeding recess 16 in a thin sowing state. In the thick sowing state, a predetermined gap is set in a range in which the seed does not pass between the tip trajectory of the seed return rotating brush 19 and the outer peripheral surface of the horizontal axis feeding roll 15, so that the feeding is performed in the thin sowing state. The seeds that are not fitted in the recess 16 can be surely swept back, and the thick sowing can increase the amount of seeds fitted into the feeding recess 16, thereby realizing a combined use of thick sowing and thin sowing.
In the invention according to claim 4, the feeding recess 16 has a width in the rotation direction of a predetermined width H in which approximately one seed in a horizontal direction enters, and the depth of the seeds overlaps with each other in the depth direction in the feeding recess 16. Therefore, it is possible to increase the amount of seeds to be fitted into the feeding recess 16 in thick sowing, thereby realizing a combined use of thick sowing and thin sowing.
In the invention of claim 5, the feeding recess 16 is formed in a horizontally elongated groove shape in which the length in the axial direction of the horizontal axis feeding roll 15 is at least five times the width in the rotational direction of the horizontal axis feeding roll 15. As a result, the amount of seeds fitted into the feeding recess 16 in thick sowing can be increased, and a combined structure for thick sowing and thin sowing can be realized.
In the invention of claim 6, since the two concave portions 31 are provided in one ring plate 30 and the slit 17 is provided at the boundary between the concave portions 31, the production and assembly of the horizontal axis feeding roll 15 can be facilitated.
According to the seventh aspect of the present invention, each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 of a mounting shaft 36 inserted so as to penetrate the stacked ring plate 30 at a predetermined position on the inner surface side. Since the protruding portion 41 is provided on one side of the portion 40 and the fitting hole 42 into which the protruding portion 41 is fitted is provided on the other side, the stacking work of the ring plate 30 is facilitated, and the horizontal shaft feeding roll 15 Manufacturing and assembly can be facilitated.
In the invention of claim 8, in the thin sowing, the seed group G fitted into the feeding recess 16 and the space K having the same size as the seed group G are alternately staggered in the width direction and the transfer direction of the seedling container A. So that it can be seeded evenly throughout the seedling raising container A, and a healthy seedling seedling can be obtained, and in the thick sowing state, the rotational speed of the horizontal axis feeding roll 15 is increased. However, the rotation of the seed return rotary brush 19 is rotated at a low speed, and the tip of the seed return rotary brush 19 has a predetermined gap between the outer peripheral surfaces of the horizontal axis feeding rolls 15 so that the seed does not pass through. Since it is rotated in a state, it is possible to sow a large amount of seeds at a high density and a thick sowing, and it is possible to sow thick sowing and thin sowing with the same horizontal axis feeding roll 15.

The longitudinal side view of a seeding apparatus and the partial cross section figure of a row seeding guide. The partial perspective view of a feeding roll. The schematic diagram seed | inoculated to the seedling container. The schematic diagram seed | inoculated to the conventional seedling container. The front view which fractured | ruptured partially the feeding roll of other embodiment. FIG. The same part expansion perspective view. The same part vertical side view. The longitudinal front view of a ring board. The longitudinal cross-sectional front view which abbreviate | omitted a part of sowing block. The longitudinal front view and longitudinal side view of a sowing block in a thin sowing state. The vertical front view and vertical side view of a sowing block in a thick sowing state. The perspective view of the state which made the ring plate insert the attachment shaft. The perspective view which shows the attachment state of a side plate to a sowing block. The perspective view which shows an example of the assembly order of a delivery roll.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a transfer stand for transferring a seedling container A, and a seeding device H for supplying seeds (seeds) to the seedling container A being transferred is provided above the transfer stand 1. .
Although illustration is abbreviate | omitted, the transfer stand 1 should just have transfer means, such as a roll and a belt of the seedling raising container A, has a support leg, and is mounted on a floor.
The seeding device H is provided with the frame 10 above the transfer table 1. A seed supply hopper 11 is detachably attached to the frame 10.

  The lower part of the seed supply hopper 11 is provided with a front guide plate 12 and a rear guide plate 13 in a funnel shape. Below the rear guide plate 13 of the seed supply hopper 11, a horizontal shaft feeding roll 15 having a large diameter in the left-right direction is provided. A feeding recess 16 into which seeds are fitted is provided on the outer peripheral surface of the horizontal shaft feeding roll 15. Reference numeral 14 denotes a seed fitting portion formed between the tip of the rear guide plate 13 and the outer peripheral surface of the horizontal shaft feeding roll 15, and the seed fits into the feeding recess 16 in the seed fitting portion 14.

The feeding recess 16 is formed in a horizontal groove shape parallel to the generatrix direction (left-right direction) of the outer peripheral surface of the horizontal shaft feeding roll 15. The feeding concave portion 16 has a width in the rotational direction of the horizontal shaft feeding roll 15 as a predetermined width H in which substantially one seed in a horizontal direction enters.
Therefore, when the horizontal axis feeding roll 15 is rotated at a low speed, the seeds fit into the feeding recess 16 without overlapping, and thin seeding becomes possible.
In addition, the depth of the feeding recess 16 is configured to have a predetermined depth F in which seeds overlap and fit in the feeding recess 16.
Therefore, when the horizontal axis feeding roll 15 is rotated at a high speed, a part of the seeds overlap each other in the axial direction of the horizontal axis feeding roll 15 in the feeding concave part 16, and the length of the feeding concave part 16 is equal to the length of the seed. A much larger amount of seed than the number of seeds excluding the thickness can be fitted into the feeding recess 16, and combined with the high-speed rotation of the horizontal axis feeding roll 15, the seed is about four times as thin as when thinly sown. A large amount of seeding is possible.

On the outer peripheral surface of the horizontal axis feeding roll 15, slits 17 are provided on the entire circumference at intervals shorter than the lateral length (interval) of one seed in the generatrix direction (left-right direction). The depth of the slit 17 is substantially the same as or slightly deeper than that of the feeding recess 16, and a scraping knife 18 is fitted into each slit 17.
A seed returning rotary brush 19 is provided on the slightly rotated side (downward side) from directly above the horizontal axis feeding roll 15.
The horizontal axis feeding roll 15 and the seed return rotating brush 19 are slowed down in a thin sowing state and faster in a thick sowing state.

In addition, the rotational speed change structure of the horizontal axis | shaft feeding roll 15 and the seed return rotary brush 19 is arbitrary, and when rotating by the drive from the transfer stand 1, the gears in a transmission path differ in the number of teeth. It is only necessary to change (convert) and change the speed, and the horizontal shaft feed roll 15 and the seed return rotary brush 19 can be changed with the transfer table 1 independently of the transfer table 1 by a transmission motor (not shown). It is good also as a structure which carries out drive rotation and changes rotation speed.
In this case, the rotational speed of the horizontal return roll 15 and the seed return rotary brush 19 at the time of thick sowing makes the rotational speed increase rate of the seed return rotary brush 19 relatively lower than the rotational increase rate of the horizontal supply roll 15.

That is, when the rotation speed of the seed return rotary brush 19 is increased at the same rate of increase as the horizontal axis feed roll 15, the sweeping action of the seed return rotary brush 19 becomes stronger, and the number of seeds fitted into the feed recess 16 is reduced. However, by relatively reducing the rate of rotation increase of the seed return rotary brush 19, it is possible to smoothly sow thickly.
The seed returning rotary brush 19 is configured to be adjustable in position with respect to the outer peripheral surface of the horizontal shaft feeding roll 15.
Therefore, in thin sowing, the tip of the seed return rotary brush 19 is brought close to the feeding recess 16 to reliably sweep back the seed and realize a predetermined amount of thin sowing.
The configuration of the position adjustment mechanism of the seed return rotating brush 19 is arbitrary, but as an example, a bearing in which the brush rotating shaft 19B is inserted into a long hole 19A provided in the side plate of the frame 10 and the brush rotating shaft 19B is mounted. 19C is moved to adjust the position.

That is, in the thin sowing state, when the tip of the seed return rotating brush 19 is positioned so as to face the feeding recess 16, a predetermined amount of thin sowing is realized by suppressing the fitting of excess seeds into the feeding recess 16 (FIG. 11).
Further, at the time of sowing, the position is adjusted so that a gap is formed so that seeds do not pass between the tip trajectory of the seed return rotary brush 19 and the outer peripheral surface of the horizontal axis feeding roll 15 (FIG. 12).
As a result, the seeds that are swept back when thinly seeded are prevented from coming into contact with the tip of the seed return rotary brush 19 through the gap and stay in the feeding recess 16 so as to be fitted below the seed return rotary brush 19. Thick sowing can be realized by increasing the total seed amount that is passed through and fitted into the feeding recess 16.

A seed derivative 20 that guides the seed fitted in the feeding recess 16 downward is provided on the side surface of the horizontal axis feeding roll 15 on the lower side in the rotational direction of the seed returning rotary brush 19.
The seed derivative 20 is attached to the side surface of the horizontal shaft feeding roll 15 so that the position thereof can be freely adjusted, and is separated from the outer peripheral surface of the horizontal shaft feeding roll 15 at the time of thick sowing rather than the thin sowing.
Therefore, as in the case of the seed return rotating brush 19, it is possible to guide the seeds partially protruding from the feeding recess 16 to the lower side than when thinly sowing, and reliably guide the seed derivative 20 when thickly sowing. To do.
The horizontal axis feeding roll 15 is formed to have a large diameter of 150 mm or more, and the tip of the front guide plate 12 of the seed supply hopper 11 is positioned on the side of the rotationally rising side from right above the horizontal axis feeding roll 15, and the feeding recess The seed fits into 16 well.

Thus, seeding by the horizontal axis feeding roll 15 is performed by fitting a predetermined amount of seeds into the feeding recess 16, a predetermined amount of a plurality of seed groups G fitted into the feeding recess 16, and the seed group G. Sowing is performed so that the space portions K of the same size are alternately staggered in the width direction and the transfer direction of the seedling container A (FIG. 3).
Sowing with the sowing apparatus H is a so-called thick sowing in which seeding container A is sowed about four times (720 cc) in the same seedling container A as so-called thin sowing. The aim is to obtain healthy seedlings in thin sowing, and the aim is to reduce the cost of raising seedlings and save labor by obtaining a large amount of seedlings in thick sowing.

And if the rotation speed of the horizontal axis | shaft feeding roll 15 of the said structure is made relatively faster with respect to the transfer speed of the seedling raising container A by the transfer stand 1, the amount of seed supply (seeding amount) will increase and it will become thick sowing, When the rotation speed of the shaft feeding roll 15 is made slower than the transfer speed of the seedling raising container A by the transfer stand 1, the seed supply amount (seeding amount) is reduced and thin seeding is performed.
That is, in the conventional sowing method, when this thin sowing is performed, there is only a method of slowing the rotational speed of the horizontal shaft feeding roll 15, and in the conventional sowing method, as shown in FIG. Seed row G is sown from each row, so that the seed row interval in the length direction of the seedling container A of each row of seed groups G is widened. As a result, the seed group G in the length direction of the seedling vessel A is sown. The seeding density of the seed group G in one row becomes higher than the density, so that the seedling container A as a whole is not seeded evenly, and healthy seedling cannot be expected. Moreover, in the conventional roll of a linear feeding recessed part, the seeding amount will be limited only by increasing the rotational speed.

In the present invention, as shown in the schematic diagram of FIG. 3, the thinly seeded seed has a seed group G fed from the feeding recess 16 and a space K without the seed group G in the width direction and the transfer direction of the seedling raising container A. Since seed groups G are sowed alternately, the seed group G is arranged in a staggered manner on the seedling container A, and even if it is thin sowing with a small amount of seeds, seeds can be seeded evenly as a whole, and good seedlings (Planted seedlings) can be obtained.
In the schematic diagram of FIG. 3, the seed group G is illustrated in a straight line for easy understanding. However, depending on various factors such as the degree of fitting into the feeding recess 16 and the size of the seed, FIG. Thus, in an actual sowing state, it shifts back and forth in the transfer direction of the seedling raising container A, and even in this respect, the entire seedling raising container A is seeded equally.

  In addition, as shown in FIG. 11, in thin sowing, laterally oriented seeds are fitted and fed one by one in the length direction of the seeds in the feeding recess 16, and not only in the transfer direction of the seedling container A but also in the width direction. Although the sowing interval can be made uniform and the uniform sowing accuracy is improved, in the thick sowing state, the depth F of the feeding recess 16 is set to a depth at which seeds overlap with each other in the feeding recess 16. Therefore, the seeds adjacent in the feeding recess 16 are overlapped with each other (FIG. 12), and as a result, the seed length is obtained by dividing the length of the feeding recess 16 by the seed length. A large amount of seeds can be fitted into the feeding recess 16 than the number of the seeds, and combined with the high-speed rotation of the horizontal shaft feeding roll 15, a thick seeding of about four times the seed amount when thinly sowing is achieved. It becomes possible.

Thus, as described above, the seed group G and the space part K are alternately dispersed in the width direction and the transfer direction of the seedling container A in a staggered manner, and the seeding recess is shaped like a horizontal groove. 16 is provided over the entire circumference in the rotational direction of the horizontal axis feeding roll 15 and has no feeding recess 16 for forming a space K having the same length as the feeding recess 16 into which the seed group G is fitted. The roll outer surface portions 24 having the same area as 16 are provided alternately in the generatrix direction of the horizontal axis feed roll 15 (FIG. 2).
In FIG. 2, in order to facilitate understanding of the arrangement of the feeding recess 16 and the space K, the illustration of the slit 17 into which the scraping knife 18 is fitted is omitted. The slits 17 may be provided at intervals shorter than the lateral length (interval) of the seeds of the grains.

FIG. 6 shows another embodiment of the horizontal axis feeding roll 15. The horizontal axis feeding roll 15 is divided into a plurality of sowing blocks 25 in the axial direction of the horizontal axis feeding roll 15, and the outer periphery of each sowing block 25. Each of the sowing blocks 25 is formed so that the feeding recesses 16 of the respective sowing blocks 25 are not located on the same straight line (bus) in the bus bar direction. The phase is changed by shifting in the rotational direction of the shaft feeding roll 15.
That is, the horizontal axis feeding roll 15 is made into a plurality of sowing blocks 25 for each predetermined length (predetermined width in the left-right direction) in the axial direction, and the feeding recesses 16 of each sowing block 25 are sowing blocks 25 in the generatrix direction of the sowing block 25. The feeding recesses 16 of the sowing blocks 25 are arranged so as to be shifted in the circumferential direction so as not to be located on the same straight line (on the same bus bar) (FIGS. 6 and 7).

Reference numeral 26 denotes a side surface of the roll outer surface portion 24 of the adjacent sowing block 25.
Therefore, the roll outer surface portion 24 of the adjacent sowing block 25 is positioned beside the feeding recess 16 of the sowing block 25, and the feeding recesses 16 of the adjacent sowing blocks 25 are alternately positioned beside this roll outer surface portion 24. Therefore, the seed group G and the space K of the seedling container A are arranged in a staggered manner in the transfer direction (length direction) and the width direction of the seedling container A.
Therefore, as shown in the schematic diagram of FIG. 3, the seeds fitted in the feeding recesses 16 of the horizontal axis feeding roll 15 are fed into the seed group G for each sowing block 25 and dispersed in a staggered manner. Even with a small amount of sowing, the seeding interval can be made uniform not only in the transfer direction of the seedling container A but also in the width direction, and the uniform sowing accuracy can be improved.

Since the horizontal axis feeding roll 15 is configured in this manner, if the horizontal axis feeding roll 15 is rotated quickly, thick sowing work can be performed, and if the horizontal axis feeding roll 15 is rotated slowly, the rotation direction is also increased. Can be seeded evenly.
Thus, although the manufacturing method (assembly method) of the horizontal axis feeding roll 15 is arbitrary, in this example, a ring-shaped ring plate 30 having a predetermined thickness is formed by synthetic resin injection molding or the like. Are formed on the horizontal axis feeding roll 15 by overlapping them in the axial direction.
On the outer surface side of each ring plate 30, a pair of recesses 31 to be the feeding recesses 16 of the horizontal axis feeding roll 15 when the ring plates 30 are stacked are provided, and the slits 17 are formed between the pair of recesses 31.
In other words, two ring plates 30 are provided side by side in the axial direction of the horizontal axis feeding roll 15, and the slit 17 is provided at the boundary between the two concave portions 31.

The ring plate 30 is provided with a fitting protrusion T for fitting the fitting protrusion T to keep fitting with each other when stacked, and a fitting recess P in which the fitting protrusion T is fitted. In the present embodiment, a fitting step 33 constituting the fitting protrusion T is provided on one side of the side surface of the ring plate 30, and the fitting step 33 is fitted on the other side of the fitting step 33. The flange portion 34 is provided, and the flange portion 34 constitutes the fitting recess P. A slit step 35 for forming the slit 17 is provided between the flange portion 34 and the side surface 26 of the roll outer surface portion 24.
Therefore, when the ring plates 30 are stacked, the fitting step portion 33 and the flange portion 34 of the ring plate 30 are fitted and fitted to each other so that they cannot be separated from each other. The state is maintained, and the overlapping work of the ring plates 30 is facilitated.

Further, when the ring plate 30 is overlapped, the flange portion 34 comes into contact with and engages with the back side surface formed by the fitting step portion 33, so that the positioning in the fitting direction is established, and the flange portion 34 and the roll outer surface portion 24 are aligned. The dimensional accuracy of the slit 17 formed by the slit step 35 between the side face 26 can be secured.
Each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 into which a mounting shaft 36 to be described later is inserted at a predetermined position on the inner surface (inner side in the radial direction). A protrusion 41 constituting a part of the joint protrusion T is provided on the other side, and a fitting hole 42 constituting a part of the fitting recess P is provided on the other side.

Therefore, when the ring plates 30 are stacked, the protrusion 41 and the fitting hole 42 of the boss portion 40 are aligned, so that the protrusion 41 and the fitting hole 42 are positioned when the ring plate 30 is stacked. Makes it easy to stack.
The protruding portion 41 and the flange portion 34 protrude in opposite directions on the left and right side surfaces of the ring plate 30, respectively, and the protruding portion 41, the fitting hole 42, the flange portion 34, and the fitting step portion 33 are fitted to each other. It is set as the structure fitted by a direction, and the fitting of each ring board 30 is strengthened.
In addition, when the ring plates 30 are stacked, the protruding portion 41 of the boss portion 40 and the fitting hole 42 are held in a fitted and fitted state, thereby facilitating the stacking operation of the ring plates 30.

The ring plate 30 can be overlapped by any method. For example, the next ring plate 30B is placed on the ring plate 30A placed in a predetermined place from above, and the ring plate is placed on the protruding portion 41 (flange portion 34) of the ring plate 30A. 30B is overlapped so that the fitting hole 42 (fitting step 33) fits (FIG. 15A), and then the ring plate 30C is overlaid on the ring plate 30B (FIG. 15B), and this is repeated in sequence. Then, the four ring plates 30 are stacked to form the sowing block 25A (FIG. 15C).
Thereby, in the sowing block 25A, the recessed portions 31 of the ring plates 30 are arranged in a straight line, and the recessed portions 31 form a single feeding recessed portion 16.

  Next, the side surface 26 of the roll outer surface portion 24 of the first ring plate 30B to be the next sowing block 25B is positioned above the concave portion 31 (feeding concave portion 16) of the uppermost ring plate 30A of the sowing block 25A. Then, the feeding recess 16 of the sowing block 25A and the recess 31 of the ring plate 30B of the next sowing block 25B are overlapped with different phases (FIG. 15C), and this is repeated to form four ring plates 30. Overlaying the sowing block 25B (FIG. 15D).

  Next, above the ring plate 30A at the uppermost stage of the sowing block 25B, the first ring plate 30B to be the next sowing block 25C is placed between the recess 31 (feeding recess 16) of the sowing block 25B and the sowing block 25C. The recesses 31 (feeding recesses 16) are overlapped with different phases (FIG. 15D), and this is repeated so that the four ring plates 30 constituting the seeding block 25 are sequentially stacked with different phases. If it repeats, it will become the horizontal axis | shaft feeding roll 15 of a predetermined width | variety by the predetermined number of sowing blocks 25A-sowing block 25E.

In this embodiment, the sowing block 25A to the sowing block 25E is overlapped with the five sowing blocks 25 to form one horizontal axis feeding roll 15, and the side plates 44 are fitted on both upper and lower (left and right) surfaces of the five sowing blocks 25. Next, the mounting shaft 36 is inserted through the mounting hole 37 of the boss portion 40 of each ring plate 30 and the insertion hole 45 of the side plate 44, and the fixing nut 46 is screwed into the protruding portion of the mounting shaft 36. The ring plate 30 of each sowing block 25 is fixed by the side plate 44 (FIG. 15E).
Therefore, the feeding recess 16 of the ring plate 30 of the next sowing block 25 faces the side surface 26 of the roll outer surface 24 of the ring plate 30 of each sowing block 25 (FIGS. 7 and 8).

  That is, six mounting holes 37 of the ring plate 30 are formed at equal intervals in the rotation direction of the horizontal axis feeding roll 15, and the feeding recess 16 is arranged by dividing the entire circumference of the horizontal axis feeding roll 15 into 45 equal parts. Therefore, when the mounting holes 37 of the ring plate 30B next to the seeding block 25B next to the ring plate 30A of the seeding block 25A on which the ring plate 30 has already been stacked are arranged with a phase difference of 60 degrees, as shown in FIG. The side surface 26 of the roll outer surface 24 of the next sowing block 25B is positioned between the feeding recess 16 and the feeding recess 16 of the sowing block 25A and is arranged in a staggered manner.

In order to facilitate understanding of the positional relationship between the ring plate 30 and the mounting shaft 36, the mounting shaft 36 is inserted before the ring plate 30 is stacked in FIG. 13 and the like. The assembly order of the rolls 15 is not limited.
Reference numeral 47 denotes a roll rotation axis of the horizontal axis feeding roll 15.
Each ring plate 30 is configured by providing a slit 17 between a pair of recesses 31 and recesses 31 (FIG. 10).
Therefore, the ring plate 30 has a pair of recesses 31 as compared with the ring plate 30 having a single recess 31 in the configuration of the horizontal axis feeding roll 15. Half the number of the ring plates 30 may be prepared with respect to the number of recesses 31 required to configure the horizontal axis feeding roll 15, and the number of parts can be reduced, and manufacturing and assembly can be facilitated.

In addition, compared to the ring plate 30 having three or more recesses 31 per sheet, the ring plate 30 is formed with a pair of recesses 31, so that the dimensional accuracy in the left-right direction (width direction) is improved. And sowing accuracy can be improved.
Moreover, the side surface 26 of the roll outer surface portion 24 of each ring plate 30 is provided with a recess 50 for preventing shrinkage (so-called sink) generated during resin molding (FIGS. 8 and 9).
Therefore, the manufacturing accuracy of the horizontal axis feeding roll 15 can be improved.
In the present embodiment, one seeding block 25 is constituted by four ring plates 30, and one horizontal axis feeding roll 15 is formed by five seeding blocks 25. On the outer sides of the ring plates 30 on both the left and right sides, A disk-shaped fixing side plate 44 is provided, and a fixing member (nut or bolt) 46 is screwed onto the mounting shaft 36 outside the left and right side plates 44.

Therefore, each ring plate 30 is positioned in the rotational direction of the horizontal axis feeding roll 15 by the mounting shaft 36 arranged in the circumferential direction, and is positioned in the left-right direction by the side plate 44.
Further, since each ring plate 30, the mounting shaft 36, and the left and right side plates 44 are strength members of each other, the horizontal axis feeding roll 15 can be assembled without requiring a separate skeleton frame or the like. The number of points can be reduced, and manufacturing and assembly costs can be reduced.
On the outer peripheral surface of the side plate 44, a recess (feeding recess 16) 31 is provided at a position corresponding to the recess (feeding recess 16) 31 of the ring plate 30 (FIGS. 5 and 14).
Therefore, the sowing block 25 of the horizontal axis feeding roll 15 is formed to the same width as the inside width dimension of the seedling raising container A, and the side plate 44 of the horizontal axis feeding roll 15 positioned above the side wall 51 of the seedling raising container A is also recessed (feeding out). Since the concave portions 16) 31 are provided, the seeds can be sufficiently dropped on the left and right sides of the seedling raising container A where the amount of seed drops is reduced.

Incidentally, in the present embodiment, the horizontal axis roll 15 has a diameter of 150 mm, the horizontal axis roll 15 has a lateral width of about 313 mm, the recess 31 has a lateral width of about 6 mm, and the slit 17 has an approximate length of 1 mm. .2 mm, the left and right width of the ring plate 30 is about 14 mm, and the sowing block 25 is constituted by four ring plates 30, so that the right and left width of each sowing block 25 is about 56 mm (see FIG. 5).
Therefore, in the case of seeds (seeds) having an average of about 6 millimeters, one grain is fitted into the recess 31, and eight grains are fitted into one feeding recess 16 formed by the four recesses 31 of each sowing block 25 (FIG. 3). (Note that the number of seeds that partially overlap and fit is not taken into account, and may differ from the actual sowing grain number).

Further, since the horizontal axis feeding roll 15 has five sowing blocks 25 arranged side by side, the left and right width of the portion with the feeding recess 16 of the horizontal axis feeding roll 15 is 280 mm, which is the same as the inner width of the seedling raising container A, A recess (feeding recess 16) 31 of a side plate 44 of about 2 millimeters is provided on both the left and right sides of the ring plate 30 of the sowing block 25 to equalize the sowing amount on the left and right sides of the seedling container A.
It should be noted that a predetermined number of ring plates 30 are stacked in advance to assemble the seeding block 25, the seeding blocks 25 are stacked a predetermined number of times, the mounting shafts 36 are inserted into the mounting holes 37 of the ring plate 30B of the seeding block 25, A disk-shaped fixing side plate 44 is brought into contact with the outer side of each plate 30, and fixing members (nuts or bolts) 46 are screwed onto the mounting shafts 36 on the outer sides of the left and right side plates 44 to be fixed. A single horizontal axis feed roll 15 may be used.

Therefore, a strip seeding guide 52 is detachably provided below the horizontal axis feeding roll 15. The row seeding guide 52 is provided with a divided drop port 54 formed by a guide body 53 provided in parallel, and is attached vertically by a link mechanism 55.
That is, when the abutment guide 52 abuts on the front and rear walls of the seedling container A being transferred, the row sowing guide 52 is moved up and down by the link mechanism 55, and the seed is guided to each divided dropping port 54 by the guide body 53. Even if the sowing apparatus H incorporates the horizontal feeding roll 15, it is possible to drop seeds in the seedling container A by soaking the seedling container A by mounting the sowing guide 52, so-called sowing. The versatility can be improved.

(Operation of the embodiment)
The present invention has the above-described configuration. When seeds are put on the seed supply hopper 11 of the seeding device H and the seedling container A is supplied to the transfer stand 1 and transferred, the seeds in the seed supply hopper 11 are separated from the front guide plate 12 and the rear guide plate 12. The seed guided to the side guide plate 13 reaches the seed fitting portion 14, is fitted into the feeding concave portion 16 of the horizontal shaft feeding roll 15 rotating at the seed fitting portion 14, and the seed fitted into the feeding concave portion 16 is seed-returned. Seeds that pass under the rotating brush 19 and are not fitted in the feeding recess 16 are swept back to the seed fitting portion 14.

The seed in the feeding recess 16 that has passed under the seed return rotating brush 19 reaches the lower side by the seed derivative 20 that is in close contact with the side surface of the horizontal axis feeding roll 15, and passes through the lower end of the seed derivative 20. Sowing in the seedling raising container A which is being transferred.
In this case, when the rotational speed of the horizontal axis feed roll 15 is increased with respect to the transfer speed of the seedling container A by the transfer table 1, the seed supply amount (seeding amount) increases, so-called thick sowing, and the horizontal axis feed roll 15 When the rotation speed of the seedling container A is lowered with respect to the transfer speed of the seedling container A by the transfer stand 1, the seed supply amount (seeding amount) is reduced and thin seeding is carried out. When the rotation speed of the roll 15 is slowed, as shown in FIG. 4, the seeding row interval becomes wide in the length direction of the seedling raising container A, the seeding density of the seed group G in one row becomes high, and the seeding row is not uniformly seeded. Become.

  In the present invention, the seed group G and the space are seeded so that the space K having the same area as the seed group G fed from the feeding recess 16 is alternately staggered in the width direction and the transfer direction of the seedling raising container A. The seed K and the space K are arranged in a staggered manner on the seedling container A, and the seed K is thin with a small amount of seeds. Even if sowing, seeds can be uniformly sown as a whole, and good seedlings (planted seedlings) can be obtained.

  That is, simply sowing seeds in a line in a straight line in the direction of the generatrix of the horizontal axis feeding roll 15, the seeds are densely packed in the direction of the generatrix, so that healthy seedlings cannot be expected. However, the seeding container A is alternately positioned not only in the transfer direction but also in the width direction, so that it is dispersed and sowed in a staggered manner, and the uniform dispersion sowing accuracy can be improved.

  Thus, the seed group G and the space portion K can be dispersed in a staggered manner in the width direction and the transfer direction of the seedling raising container A alternately, and the sowing method is arbitrary. A roll outer surface portion 24 that is provided over the entire circumference of the feeding roll 15 in the rotation direction and does not have the feeding recess 16 for forming a space K having the same left and right length as the feeding recess 16 into which the seed group G is fitted. Since the horizontal axis feed roll 15 is provided alternately in the generatrix direction, when the horizontal axis feed roll 15 rotates, the seeds that have fallen from the feed recess 16 become the seed group G and pass below the roll outer surface part 24. The part of the seedling raising container A becomes the space part K, and the seed group G and the space part K are alternately positioned not only in the transfer direction of the seedling raising container A but also in the width direction, and are dispersed and sown in a staggered manner. .

Thus, the feeding recess 16 formed in a horizontal groove shape parallel to the generatrix direction (left and right direction) of the outer peripheral surface of the horizontal axis feeding roll 15 has a width of the horizontal axis feeding roll 15 in the rotational direction substantially equal to that of the horizontal seed. Since the predetermined width H for entering the grains is set, when the horizontal axis feeding roll 15 is rotated at a low speed, the seeds fit into the feeding recess 16 without overlapping, and thin seeding becomes possible.
Moreover, since the depth of the feeding recess 16 is configured to have a predetermined depth F in which part of the seeds overlap each other in the feeding recess 16, a part of the seeds in the feeding recess 16 is formed. The horizontal axis roll 15 is fitted to overlap with each other in the axial direction of the roll 15, and seeds far larger than the number of seeds obtained by dividing the length of the feed recess 16 by the length of the seed are fitted in the feed recess 16. Combined with the high-speed rotation of the horizontal shaft feeding roll 15, it is possible to sow seeds with a seed amount about four times that of thin seeding.

In addition, since the slit 17 of the horizontal axis | shaft feeding roll 15 is provided in the perimeter in the bus-line direction (left-right direction) at intervals shorter than the horizontal width of one seed, The scraping knife 18 always comes into contact with the seed and can be scraped out from the feeding recess 16.
The seed return rotating brush 19 and the horizontal axis feeding roll 15 provided on the slightly rotated side (downward side) from just above the horizontal axis feeding roll 15 are slowed down in the thin sowing state, and are thus fitted into the feeding recess 16. Unseed seeds are swept back by the seed return rotary brush 19 to achieve uniform thin sowing.

On the contrary, in the thick sowing state, the rotational speeds of the horizontal axis feeding roll 15 and the seed return rotating brush 19 are increased more than in the thin sowing state, so that the seed is smoothly and reliably fitted into the feeding recess 16.
That is, as the rotation of the horizontal axis feeding roll 15 becomes faster, the amount of seeds rotating together with the horizontal axis feeding roll 15 increases, but the number of rotations of the seed return rotating brush 19 is also increased. The seed accumulation at the contact portion of the rotating brush 19 is made constant, and the seeds are smoothly and reliably fitted.

In this case, the rotational speed of the horizontal axis feeding roll 15 and the seed return rotary brush 19 during thick sowing is set so that the rotational increase rate of the seed return rotary brush 19 is relatively lower than the rotational increase rate of the horizontal axis supply roll 15. Therefore, it is possible to prevent seed scattering and decrease in the number of seeds fitted into the feeding recess 16 due to an excessive sweep back action of the seed return rotating brush 19, and smooth thick seeding can be achieved.
Since the seed return rotating brush 19 is configured to be adjustable in position with respect to the outer peripheral surface of the horizontal axis feeding roll 15, when thinly sown, the tip of the seed returning rotating brush 19 is brought close to the feeding recess 16 to ensure that The seed is swept back to achieve a predetermined amount of thin sowing.

That is, when the tip of the seed return rotating brush 19 is positioned so as to face the feeding recess 16 in the thin sowing state, a predetermined amount of thin sowing is realized by suppressing the fitting of excess seeds into the feeding recess 16.
In addition, when thickly sown, the position can be adjusted so that a gap that does not allow seeds to pass between the tip trajectory of the seed return rotary brush 19 and the outer peripheral surface of the horizontal axis feeding roll 15 is formed, so that the seeds overlap each other. Even if it fits into the feeding recess 16 and, strictly speaking, even if it partially protrudes from the seed feeding recess 16, such seeds are prevented from being swept back by the seed return rotating brush 19. Thick sowing can be realized by increasing the amount of seeds to be fitted.

  A seed derivative 20 is provided on the side surface of the horizontal axis feeding roll 15 on the lower side of the rotation direction of the seed return rotating brush 19 to guide the seed fitted in the feeding recess 16 downward. Since the position can be adjusted with respect to the side surface, the seed partially protruding from the feeding recess 16 can be guided to the lower side, thereby ensuring the guidance of the seed during the thick sowing.

  In the embodiment of FIG. 5, the horizontal axis feeding roll 15 is divided into a plurality of sowing blocks 25 in the axial direction of the horizontal axis feeding roll 15, and the feeding recesses 16 of each sowing block 25 are positioned on the same straight line. The roll outer surface portion 24 of the adjacent sowing block 25 is located beside the feeding recess 16 of the sowing block 25, and is arranged so as not to move. Since the feeding recesses 16 of the adjacent sowing blocks 25 are alternately positioned beside the outer surface part 24, the seed group G and the space part K of the seedling raising container A are in the transfer direction (length direction) and the width direction of the seedling raising container A. Arranged in a staggered pattern.

Therefore, as shown in the schematic diagram of FIG. 3, the seed fitted in the feeding recess 16 of the horizontal axis feeding roll 15 is fed into the seed group G for each sowing block 25 and dispersed in a staggered manner, and the seed amount is small. Even in thin sowing, the sowing interval can be made uniform not only in the transfer direction of the seedling raising container A but also in the width direction, and the uniform sowing accuracy can be improved.
In other words, when seeding with the horizontal axis feeding roll 15 provided with the feeding recess 16 formed in a straight line in the bus bar direction, the seeds are densely packed in the bus bar direction and the interval in the rotation direction of the horizontal axis feeding roll 15 is wide. However, in the present invention, since the sowing block 25 having the feeding recess 16 is displaced in the rotation direction, the feeding recess 16 and the roll outer surface portion 24 are alternately arranged in the rotation direction and the generatrix direction of the horizontal axis feeding roll 15. The seed group G is dispersed in a staggered manner as shown in FIG.

As described above, in the sowing apparatus H of the present invention, the above-described uniform thin sowing seed sowing can be realized by rotating slowly, and if the rotation of the horizontal axis feeding roll 15 is increased, thick sowing work can be performed. The versatility of one seeding device can be improved.
Thus, although the manufacturing method (assembly method) of the horizontal axis feeding roll 15 is arbitrary, in this example, a ring-shaped ring plate 30 having a predetermined thickness is formed by synthetic resin injection molding or the like. Since a plurality of are stacked in the axial direction and formed on the horizontal axis feeding roll 15, it can be manufactured at a lower cost than manufacturing by cutting.

  On the outer surface side of each ring plate 30, a pair of recesses 31 to be the feeding recesses 16 of the horizontal axis feeding roll 15 when the ring plates 30 are stacked are provided, and the slits 17 are formed between the pair of recesses 31. A fitting step portion 33 is provided on one side of the side surface of the ring plate 30, and a flange portion 34 that is fitted to the fitting step portion 33 is provided on the other side of the fitting step portion 33. Since the slit step portion 35 for forming the slit 17 is provided between the flange portion 34 and the side surface 26 of the roll outer surface portion 24, each ring plate 30 is overlapped with the fitting step of the ring plate 30. Since the portion 33 and the flange portion 34 are fitted and fitted, the stacking operation of the ring plate 30 is facilitated.

Further, since there is a slit step 35 between the flange portion 34 of one ring plate 30 and the side surface 26 of the roll outer surface portion 24 of the other ring plate 30, when each ring plate 30 is overlapped, the slit step A slit 17 is formed between the adjacent ring plate 30 by the portion 35, and in combination with the slit 17 between the pair of concave portions 31, the slit 17 is disposed in the axial direction, and is previously provided on both sides of the concave portion 31 for slitting. Compared with the case where the slit step 35 is provided, it can be manufactured at a lower cost.
Each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 into which a mounting shaft 36 described later is inserted at a predetermined position on the inner surface side, and a protruding portion 41 is fitted on one side of the boss portion 40 on the other side. Since the joint hole 42 is provided, when the ring plates 30 are overlapped, the protrusion 41 of the boss 40 and the fitting hole 42 are matched, so that the positioning when the protrusion 41 and the fitting hole 42 are overlapped, The stacking operation of the ring plate 30 is facilitated.

Further, when the ring plates 30 are stacked, the projecting portion 41 of the boss portion 40 and the fitting hole 42 are fitted and fitted together, thereby facilitating the stacking operation of the ring plates 30.
The ring plate 30 can be overlapped by any method. For example, the next ring plate 30B is placed on the ring plate 30A placed at a predetermined location from above, and the ring plate 30B is placed on the protrusion 41 (flange portion 34) of the ring plate 30A. The fitting holes 42 (fitting step portions 33) are overlapped so as to be fitted, and this is repeated, so that the four ring plates 30 are overlapped to form the seeding block 25A. The recesses 31 become the feeding recesses 16 when assembled in a straight line.

  Next, the first ring plate 30B to be the next seeding block 25B is placed above the uppermost ring plate 30A of the sowing block 25A, and the ring plate is placed above the recess 31 (feeding recess 16) of the ring plate 30A. The phase of the top ring plate 30A of the sowing block 25A and the recess 31 (feeding recess 16) of the ring plate 30B of the next sowing block 25B are set so that the side surface 26 of the roll outer surface portion 24 of 30B is positioned. This is repeated and this is repeated, and the four ring plates 30 are stacked to form a seeding block 25B.

  When the four ring plates 30 constituting the sowing block 25 are sequentially repeated above the sowing block 25B so as to have different phases, the horizontal axis feeding roll 15 having a predetermined width is formed by a predetermined number of sowing blocks 25. The five-stage seeding block 25 is overlapped to form one horizontal axis feeding roll 15, and the side plates 44 are fitted to both the upper and lower (left and right) surfaces of the five-stage seeding block 25, and then the boss portion of each ring plate 30. The mounting shaft 37 is inserted and penetrated into the mounting hole 37 of 40 and the insertion hole 45 of the side plate 44, the fixing nut 46 is screwed into the protruding portion of the mounting shaft 36, and the ring plate 30 of each seeding block 25 is connected by the side plate 44. Since it is fixed, assembly can be facilitated.

  That is, six mounting holes 37 of the ring plate 30 are formed at equal intervals in the rotation direction of the horizontal axis feeding roll 15, and the feeding recess 16 is arranged by dividing the entire circumference of the horizontal axis feeding roll 15 into 45 equal parts. Therefore, when the mounting holes 37 of the ring plate 30B next to the ring plate 30B next to the ring plate 30A of the seeding block 25A on which the ring plate 30 has already been stacked are arranged with a phase difference of 60 degrees, the feeding of the seeding block 25A The side surface 26 of the roll outer surface portion 24 of the next sowing block 25B is located between the concave portion 16 and the feeding concave portion 16 and is arranged in a staggered manner.

  In addition, each ring plate 30 is configured by providing the slit 17 between the pair of recesses 31 and the recesses 31, so that the ring plate 30 is formed on the ring plate 30 per sheet when configuring the horizontal axis feeding roll 15. Since it has a pair of recessed parts 31, compared with what has the single recessed part 31, it is a half number with respect to the number of the recessed parts 31 required in order to comprise one horizontal axis | shaft feeding roll 15. The ring plate 30 may be prepared, and the number of parts can be reduced to facilitate manufacture and assembly.

Further, since the ring plate 30 is formed with a pair of recesses 31 as compared with the ring plate 30 having three or more recesses 31 per sheet, the dimensional accuracy in the left-right direction (width direction) is improved. And sowing accuracy can be improved.
In addition, the side surface 26 of the roll outer surface portion 24 of each ring plate 30 is provided with a recess 50 for preventing shrinkage (so-called sink) generated during resin molding, so that the manufacturing accuracy of the horizontal shaft feeding roll 15 is improved. Can be made.

  In the present embodiment, one seeding block 25 is constituted by four ring plates 30, and one horizontal axis feeding roll 15 is formed by five seeding blocks 25. On the outer sides of the ring plates 30 on both the left and right sides, Since the disk-shaped fixing side plates 44 are provided and the fixing nuts 46 are screwed onto the outer mounting shafts 36 of the left and right side plates 44, each ring plate 30 is laterally moved by the mounting shafts 36 arranged in the circumferential direction. The shaft feed roll 15 is positioned in the rotational direction, and the side plate 44 is positioned in the left-right direction.

Therefore, since the horizontal axis feeding roll 15 can be constituted by the ring plate 30, the side plate 44, and the mounting shaft 36, the number of parts can be reduced and the assembly can be performed at low cost.
On the outer peripheral surface of the side plate 44, a recess (feeding recess 16) 31 is provided at a position corresponding to the recess (feeding recess 16) 31 of the ring plate 30. Even if the shaft feeding roll 15 is formed, the seed falls from the concave portion (feeding concave portion 16) 31 of the side plate 44 of the horizontal shaft feeding roll 15 located above the side wall 51 of the seedling raising container A, and the amount of seed fall is small. The seeds can be sufficiently dropped on the left and right sides of the seedling raising container A.

  DESCRIPTION OF SYMBOLS 1 ... Transfer stand, 10 ... Frame, 11 ... Seed supply hopper, 12 ... Front side guide plate, 13 ... Rear side guide plate, 14 ... Seed fitting part, 15 ... Horizontal axis feeding roll, 16 ... Feeding recessed part, 17 ... Slit , 18 ... Scraping knife, 19 ... Seed return rotary brush, 20 ... Seed derivative, 24 ... Roll outer surface part, 25 ... Seeding block, 26 ... Side face, 30 ... Ring plate, 31 ... Recess, 33 ... Fitting step part 34 ... Flange portion, 35 ... Step portion for slit, 36 ... Mounting shaft, 37 ... Mounting hole, 40 ... Boss portion, 41 ... Projection portion, 42 ... Fitting hole, 44 ... Side plate, 45 ... Insertion hole, 46 ... Nut for fixing, 50 ... recess, 52 ... strip seeding guide, 54 ... split dropping port, 55 ... link mechanism, A ... seedling container, G ... seed group, H ... seeding device, K ... space, P ... recess for fitting, T: Protruding part for fitting.

According to the first aspect of the present invention, a horizontal axis feeding roll 15 for supplying seeds to the seedling raising container A being transferred by the transfer stand 1 is provided below the supply hopper, and the horizontal axis feeding roll 15 is provided on the outer circumferential surface of the horizontal axis feeding roll 15. A horizontal groove shape with a predetermined length in which a plurality of seeds are fitted in parallel to the generatrix direction of the horizontal axis feeding roll 15 and having a predetermined width in which approximately one seed can be fitted in the rotation direction of the roll 15. The feeding recesses 16 formed in the horizontal shaft feeding roll 15 are arranged in parallel in the rotational direction and the axial direction of the horizontal axis feeding roll 15, and the feeding concave parts 16 adjacent to the rotational direction and the axial direction of the horizontal axis feeding roll 15 are provided. A roll outer surface portion 24 having substantially the same area as that of the feeding recess 16 is provided between the feeding recess 16 and the roll outer surface portion 24. The roll recessing surface 16 and the roll outer surface portion 24 are alternately arranged in the rotation direction and the axial direction of the horizontal axis feeding roll 15. And more than the rotational direction of the horizontal axis feeding roll 15 A seed return rotating brush 19 that is arranged in a zigzag pattern so as to be longer in the center direction and sweeps back the seeds that are not fitted in the feeding recess 16 on the slightly lower side of rotation than the horizontal axis feeding roll 15. Provided, and the rotational speed of the horizontal axis feeding roll 15 and the seed return rotary brush 19 can be changed to thick sowing with a large amount of seed feeding and thin sowing with a small amount of seed feeding , The seed returning rotary brush 19 slows down the rotational speed of the horizontal axis feeding roll 15 and the seed returning rotary brush 19 in the thin sowing state, and the horizontal axis feeding roll 15 and the seed returning rotary brush in the thick sowing state. 19 with a faster rotational speed of, der that the horizontal axis feed roll 15 rotation increase rate seeds back the set nursery container thickness播薄播兼for sowing apparatus low increase in the rotational speed of the rotary brush 19 relative to the .
According to the second aspect of the present invention, the seed return rotating brush 19 is configured such that the position of the seed returning rotary brush 19 can be adjusted with respect to the outer peripheral surface of the horizontal axis feeding roll 15, and the tip of the seed returning rotating brush 19 is in the feeding recess 16 in the thin sowing state. The seedlings are configured so that a predetermined gap can be set between the tip trajectory of the seed return rotary brush 19 and the outer peripheral surface of the horizontal shaft feeding roll 15 in the thick sowing state. This is a sowing device for both thick and thin sowing for containers.
According to a third aspect of the present invention, the feeding recess 16 has a width in the rotational direction set to a predetermined width H in which substantially one seed in a lateral direction enters, and the depth of the seeds in the feeding recess 16 is in the depth direction. This is a sowing device for thick seeding and thin sowing for seedling containers constructed to have a predetermined depth F that overlaps and fits.
In the invention of claim 4, the feeding recess 16 has a horizontally elongated groove shape in which the length in the axial direction of the horizontal axis feeding roll 15 is at least five times the width in the rotational direction of the horizontal axis feeding roll 15. The feeding recess 16 adjacent to the rotation direction of the horizontal axis feeding roll 15 is formed at a distance from the width of the feeding recess 16 positioned in the rotation direction of the horizontal axis feeding roll 15. The feeding recess 16 adjacent in the axial direction is a thick sowing and seeding device for seedling containers configured to be located away from the length of the feeding recess 16 positioned in the axial direction of the horizontal feeding roll 15. Is.
The invention of claim 5 is configured such that the horizontal axis feeding roll 15 is formed by stacking a plurality of ring-shaped ring plates 30 having a predetermined thickness in the axial direction of the horizontal axis feeding roll 15. On the outer surface side, when the ring plate 30 is overlapped, the concave portion 31 that becomes the feeding concave portion 16 of the horizontal axis feeding roll 15 and the roll outer surface portion 24 are alternately provided in the rotation direction of the horizontal axis feeding roll 15, The concave portion 31 is sized to fit approximately one seed, and two concave portions 31 are juxtaposed in the axial direction of the horizontal axis feeding roll 15 on one ring plate 30, and are fed out at the boundary between the two concave portions 31. The seedling container is provided with a slit 17 in which a scraping knife 18 for dropping seeds clogged in the recess 16 is fitted.
According to a sixth aspect of the present invention, each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 of a mounting shaft 36 inserted in a predetermined position on the inner surface side so as to penetrate the stacked ring plate 30. This is a thick sowing and seeding device for a seedling container provided with a protruding portion 41 on one side of the portion 40 and a fitting hole 42 on which the protruding portion 41 is fitted on the other side.
In the invention of claim 7, the horizontal axis feeding roll 15 for supplying seeds is rotated below the supply hopper at a position above the seedling raising container A being transferred by the transfer means of the transfer table 1, and the horizontal axis feeding roll 15 In the method of seeding seedling container A with seeds fitted into feeding recess 16 on the outer peripheral surface, in a thin sowing state, horizontal axis feeding roll 15 is rotated at a predetermined low speed, and seed return is performed above horizontal axis feeding roll 15. The tip of the rotary brush 19 is swept back with the seed located on the upper side in the feeding recess 16, and a plurality of seeds are fitted in the feeding recess 16 of the horizontal groove in a single row, so that the horizontal shaft feeding roll 15 The seedling container A is staggered so as to alternate with each other in the rotational direction and the axial direction and is longer in the axial direction than the rotational direction of the horizontal feeding roll 15, and in the thick sowing state, the horizontal axis Feeding roll 15 and seed return rotating brush 9 is rotated faster than the thin sowing state, and the rotation speed of the seed return rotary brush 19 is decreased as compared with the rotation increase rate of the horizontal axis feeding roll 15, and at this time, The tip of the seed return rotating brush 19 is rotated with a predetermined gap between the outer peripheral surfaces of the horizontal axis feeding roll 15 so that the seeds do not pass through, and the seeds are fed three times or more compared to the thin sowing state. 16 and sowing, so that thick sowing and thin sowing can be sowed by the same horizontal axis feeding roll 15, so that a thick sowing and thin sowing method for seedling containers is used.

In the first aspect of the present invention, the feeding recess 16 of the horizontal shaft feeding roll 15 is formed in a horizontal groove shape, the roll outer surface portion 24 having substantially the same area is provided between the adjacent feeding recesses 16, and the feeding recess. 16 and the roll outer surface portion 24 are arranged in a zigzag shape that is longer in the axial direction than the rotation direction, and the rotation speed of the horizontal axis feed roll 15 and the seed return rotary brush 19 can be changed. Although it is the horizontal axis feeding roll 15, it is possible to realize the combined use of thick sowing and thin sowing, and in thin sowing, the seed group G fitted in the feeding recess 16 and the space K having the same size as the seed group G. Can be sowed so that they are alternately staggered in the width direction and the transfer direction of the seedling container A, and evenly seeded throughout the seedling container A, and a healthy seedling seedling can be obtained, Seed return rotation in thick sowing state Since the increase in the rotation speed of the lash 19 is set low, it is possible to prevent seed scattering and decrease in the number of seeds fitted into the feeding recess 16 due to an excessive sweep back action of the seed return rotating brush 19. It is possible to achieve a thick sowing and thin sowing configuration.
In the invention of claim 2 , the seed return rotating brush 19 is configured to be position adjustable with respect to the outer peripheral surface of the horizontal axis feeding roll 15, and the tip of the seed returning rotating brush 19 faces the feeding recess 16 in a thin sowing state. In the thick sowing state, a predetermined gap is set in a range in which the seed does not pass between the tip trajectory of the seed return rotating brush 19 and the outer peripheral surface of the horizontal axis feeding roll 15, so that the feeding is performed in the thin sowing state. The seeds that are not fitted in the recess 16 can be surely swept back, and the thick sowing can increase the amount of seeds fitted into the feeding recess 16, thereby realizing a combined use of thick sowing and thin sowing.
In the invention of claim 3 , the feeding recess 16 has a width in the rotational direction set to a predetermined width H in which approximately one seed in a horizontal direction enters, and the depth of the seeds overlaps with each other in the depth direction within the feeding recess 16. Therefore, it is possible to increase the amount of seeds to be fitted into the feeding recess 16 in thick sowing, thereby realizing a combined use of thick sowing and thin sowing.
In the invention of claim 4 , the feeding recess 16 is formed in a horizontally elongated groove shape in which the length in the axial direction of the horizontal axis feeding roll 15 is at least five times the width in the rotational direction of the horizontal axis feeding roll 15. As a result, the amount of seeds fitted into the feeding recess 16 in thick sowing can be increased, and a combined structure for thick sowing and thin sowing can be realized.
According to the fifth aspect of the present invention, since the two recessed portions 31 are provided in one ring plate 30 and the slit 17 is provided at the boundary between the recessed portions 31, it is possible to easily manufacture and assemble the horizontal axis feeding roll 15.
According to the sixth aspect of the present invention, each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 of a mounting shaft 36 inserted so as to penetrate the stacked ring plate 30 at a predetermined position on the inner surface side. Since the protruding portion 41 is provided on one side of the portion 40 and the fitting hole 42 into which the protruding portion 41 is fitted is provided on the other side, the stacking work of the ring plate 30 is facilitated, and the horizontal shaft feeding roll 15 Manufacturing and assembly can be facilitated.
In the invention of claim 7 , in thin sowing, the seed group G fitted into the feeding recess 16 and the space K having the same size as the seed group G are alternately staggered in the width direction and the transfer direction of the seedling container A. So that it can be seeded evenly throughout the seedling raising container A, and a healthy seedling seedling can be obtained, and in the thick sowing state, the rotational speed of the horizontal axis feeding roll 15 is increased. However, the rotation of the seed return rotary brush 19 is rotated at a low speed, and the tip of the seed return rotary brush 19 has a predetermined gap between the outer peripheral surfaces of the horizontal axis feeding rolls 15 so that the seed does not pass through. Since it is rotated in a state, it is possible to sow a large amount of seeds at a high density and a thick sowing, and it is possible to sow thick sowing and thin sowing with the same horizontal axis feeding roll 15.

Claims (8)

  A horizontal axis feeding roll 15 for supplying seeds to the seedling raising container A being transferred by the transfer table 1 is provided below the supply hopper, and the outer circumferential surface of the horizontal axis feeding roll 15 is rotated in the rotational direction of the horizontal axis feeding roll 15. A feeding recess 16 having a predetermined width in which substantially one seed can be fitted and formed in a shape of a horizontal groove having a predetermined length in which a plurality of seeds are fitted in parallel to the generatrix direction of the horizontal axis feeding roll 15. A plurality of the feeding recesses 16 are arranged in parallel in the rotation direction and the axial center direction of the horizontal shaft feeding roll 15, and the feeding recesses 16 are arranged between the feeding recesses 16 adjacent to the rotation direction and the axial center direction of the horizontal shaft feeding roll 15. A roll outer surface portion 24 having substantially the same area as 16 is provided, and the feeding concave portion 16 and the roll outer surface portion 24 are alternately arranged in the rotational direction and the axial direction of the horizontal axis feeding roll 15 and are also horizontal axis feeding rolls. 15 longer in the axial direction than the direction of rotation A seed return rotating brush 19 that sweeps seeds that are not fitted in the feeding recess 16 is provided on the rotation descending side slightly above the horizontal axis feeding roll 15 and arranged in a zigzag manner. A thick sowing / thin sowing apparatus for seedling containers that can change the number of rotations of the roll 15 and the seed return rotating brush 19 to thick sowing with a large amount of seed feeding and thin sowing with a small amount of seed feeding.   In Claim 1, the said horizontal axis | shaft feeding roll 15 and the said seed return rotary brush 19 slow down the rotation speed of the said horizontal axis supply roll 15 and the said seed return rotary brush 19 in the said thin sowing state, In the said thick sowing state, For the seedling raising container in which the rotational speed of the horizontal axis feed roll 15 and the seed return rotary brush 19 is increased and the increase in the rotational speed of the seed return rotary brush 19 is set lower than the rotational increase rate of the horizontal axis feed roll 15. Thick and thin sowing device.   3. The seed return rotary brush 19 according to claim 1 or 2, wherein the seed return rotary brush 19 is configured to be positionally adjustable with respect to the outer peripheral surface of the horizontal shaft supply roll 15, and the tip of the seed return rotary brush 19 is extended in the thin sowing state. A position facing the recess 16 and a predetermined gap can be set in a range in which seeds do not pass between the tip trajectory of the seed return rotating brush 19 and the outer peripheral surface of the horizontal shaft feeding roll 15 in the thick sowing state. Thick sowing and thin sowing device for seedling containers.   4. The feeding recess 16 according to any one of claims 1 to 3, wherein the width of the feeding recess 16 is set to a predetermined width H in which substantially one seed in a horizontal direction enters, and the depth thereof is the seed in the depth direction within the feeding recess 16. A thick sowing / thin sowing device for seedling containers configured to have a predetermined depth F in which a part of the seedlings overlap with each other.   In any one of Claims 1-4, the said extending | stretching recessed part 16 is at least 5 times or more the length of the axial direction of the horizontal axis | shaft supply roll 15 with respect to the width | variety in the rotation direction of the horizontal axis supply roll 15. The feeding recess 16 that is formed in the shape of a horizontally elongated groove and that is adjacent to the rotation direction of the horizontal axis feeding roll 15 is positioned away from the width of the feeding recess 16 that is positioned in the rotation direction of the horizontal axis feeding roll 15. Thick sowing for seedling raising containers in which the feeding recess 16 adjacent in the axial direction of the shaft feeding roll 15 is located away from the length of the feeding recess 16 located in the axial direction of the horizontal feeding roll 15. Combined sowing device.   In any one of Claims 1-5, the said horizontal axis | shaft feeding roll 15 is set as the structure which overlaps and forms the ring shaped ring board 30 of predetermined thickness in the axial center direction of the horizontal axis | shaft feeding roll 15, When the ring plate 30 is stacked on the outer surface side of each ring plate 30, the concave portion 31 that becomes the feeding concave portion 16 of the horizontal axis feeding roll 15 and the roll outer surface portion 24 are arranged in the rotational direction of the horizontal axis feeding roll 15. The recesses 31 are provided alternately, and the recesses 31 are sized so that a single seed can be fitted therein. Two recesses 31 are provided side by side in the axial direction of the horizontal axis feeding roll 15 on one ring plate 30. A thick sowing and combined sowing device for a seedling container provided with a slit 17 into which a scraping knife 18 for dropping seed clogged in the feeding recess 16 is provided at the boundary of 31.   7. The boss portion according to claim 1, wherein each ring plate 30 is provided with a mounting hole 37 of a mounting shaft 36 inserted in a predetermined position on the inner surface side so as to penetrate the stacked ring plate 30. 40. A thick seeding and sowing device for a seedling container provided with a protrusion 41 on one side of the boss 40 and a fitting hole 42 on which the protrusion 41 is fitted on the other side.   The horizontal axis feeding roll 15 for supplying seeds is rotated below the supply hopper at a position above the seedling raising container A being transferred by the transfer means of the transfer table 1, so that the feeding recess 16 on the outer peripheral surface of the horizontal axis feeding roll 15 is rotated. In the method of sowing the fitted seeds in the seedling raising container A, in the thin sowing state, the horizontal axis feeding roll 15 is rotated at a predetermined low speed, and the tip of the seed returning rotary brush 19 is fed above the horizontal axis feeding roll 15. The seeds located on the upper side in the recess 16 are swept back, and a plurality of seeds are fitted in a row in the feeding recess 16 of the horizontal groove so that the horizontal axis feeding roll 15 rotates in the rotational direction and the axial direction. The seedling container A is staggered so as to alternate with each other and to be longer in the axial direction than the rotation direction of the horizontal axis feeding roll 15, and in the thick sowing state, the horizontal axis feeding roll 15 and the seed return rotation Reduce the rotation speed of the brush 19 And the rotation speed of the seed return rotary brush 19 is decreased as compared with the rate of rotation increase of the horizontal axis feeding roll 15. At this time, the tip of the seed return rotary brush 19 is rotated. Is rotated with a predetermined gap between the outer peripheral surfaces of the horizontal axis feeding rolls 15 so that the seeds do not pass through, and seeding is carried out by fitting three times or more seeds into the feeding recesses 16 as compared with the thin sowing state. Thus, a thick sowing and thin sowing method for seedling containers that allows sowing and thin sowing to be carried out with the same horizontal axis feeding roll 15.

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