JP6623429B2 - Thick and thin sowing combined seeding apparatus for seedling raising container and thick sowing thin seeding combined seeding method for seedling raising container - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a sowing apparatus and a method for sowing a seedling in a seedling container being transported, which is also used for thick seeding and thin sowing.

2. Description of the Related Art Conventionally, a configuration is known in which a horizontal shaft feeding roll having a horizontal groove-shaped feeding recess formed on an outer peripheral surface below a supply hopper is provided (see Patent Document 1).
Conventionally, a configuration in which a horizontal axle feeding roll is formed by stacking a ring-shaped ring plate having a predetermined thickness on top of each other and the feeding recesses are arranged in a staggered manner is known (see Patent Document 2).

JP 2012-85558 A JP 2007-129962 A

Since the feeding recess of the former horizontal axis feeding roll of the known examples has a straight groove-shaped feeding recess formed in a straight line parallel to the generatrix direction of the horizontal axis feeding roll, the seed supply amount (falling amount / In the case of thin sowing with a reduced seeding amount, as shown in FIG. 4, there is a problem that the intervals between rows of seeds sowed in the transfer direction of the seedling growing container are widened, and the seeding is not evenly spread over the entire seedling growing container.
That is, the seeding operation is performed to obtain a seedling to be transplanted to a field by a rice transplanter, and a seeding method of sowing seeds in a seedling container and raising the seedlings is well known.
As this sowing method, there is a so-called thick sowing method in which many seeds are sown in one seedling raising container to lower the production cost of planted seedlings, and the seeding method is selected in an area where the seedling raising environment is relatively good.
On the other hand, there is a sowing method of thin sowing that enables seedling to be raised for a long time without being crowded as much as possible.
In the conventional seeding apparatus, a horizontal axis feeding roll provided with feeding recesses at various intervals is mounted, and a dedicated machine for thick sowing or thin sowing is used.
The latter feeding roll of the known example has a feeding roll in which the feeding recesses of the feeding roll are arranged in a zigzag pattern, but is a feeding recess in which single or two seeds enter, and has a rectangular shape having the same vertical width and width. They are arranged in a so-called checkerboard pattern, so that the amount of seeds fitted into the feeding recess is limited, making it impossible to cope with thick sowing. In addition, since thin sowing is not premised on thick sowing, thick sowing and thin sowing cannot be shared.
In other words, in the latter known example, if one seed fits into one feeding recess, the two feeding recesses are staggered in the axial direction in FIG. 11 of the known example, so that the entire two feeding recesses are used. Even if two or three seeds fit together, it is not possible to fit more seeds, so thick sowing is not possible.
The present invention makes it possible to realize seeding work from thick sowing to thin sowing by using the same horizontal axle feeding roll by devising the shape and arrangement of the feeding recess, and furthermore, even in thin sowing, This is a dual-purpose configuration that can achieve high seeding density and high seed density.

According to the first aspect of the present invention, a horizontal axle feeding roll 15 for supplying seeds to the seedling growing container A being transferred by the transfer table 1 is provided below the supply hopper, and the horizontal axle feeding roll 15 is provided on an outer peripheral surface of the horizontal axle feeding roll 15. A horizontal groove shape having a predetermined width in which approximately one seed can be fitted in the rotation direction of the roll 15 and having a predetermined length in parallel with the generatrix direction of the horizontal axis feeding roll 15 and fitting a plurality of seeds. Are formed in parallel with each other in the rotation direction and the axial direction of the horizontal shaft feeding roll 15, and the feeding recesses 16 are adjacent to each other in the rotation direction and the axial direction of the horizontal shaft feeding roll 15. A roll outer surface 24 having substantially the same area as the feeding recess 16 is provided between the feeding recess 16 and the feeding recess 16 and the roll outer surface 24 are alternately arranged in the rotation direction and the axial direction of the horizontal shaft feeding roll 15. And more than the rotation direction of the horizontal axis feeding roll 15 A seed return rotating brush 19, which is arranged in a staggered manner so as to be longer in the direction of the center, and is slightly rotated downward from directly above the horizontal shaft feeding roll 15, and sweeps back seeds not fitted in the feeding recessed portion 16. provided, with the horizontal axis feed roll 15 the seed returns the rotational speed of the rotary brush 19 and a modifiable configuration seeded less thin feeding intensive thickness sowing and feeding amount of seeds seeds, and the horizontal axis feed roll 15 The seed return rotating brush 19 slows down the number of rotations of the horizontal axis feeding roll 15 and the seed return rotating brush 19 in the thin sowing state, and the horizontal axis feeding roll 15 and the seed return rotating 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 invention of claim 2, the seed return rotary brush 19 is configured to be adjustable in position with respect to the outer peripheral surface of the horizontal shaft feed roll 15, and the tip of the seed return rotary brush 19 is set to the feed recess 16 in the thin seeding state. 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 axis feeding roll 15 in the thick sowing state. This is a thick seeding / thinning seeding apparatus for containers.
According to the invention of claim 3, the feeding recess 16 has a width in the rotation direction set to a predetermined width H in which approximately one lateral seed can enter, and the depth thereof is such that a part of the seeds in the feeding recess 16 in the depth direction mutually. This is a thick seeding / thinning / single seeding apparatus for a seedling raising container configured to have a predetermined depth F that overlaps and fits.
The invention according to claim 4 is characterized in that the feeding recessed portion 16 has a horizontally elongated groove shape in which the length of the horizontal axis feeding roll 15 in the axial direction is at least 5 times or more the width in the rotation direction of the horizontal axis feeding roll 15. While being formed, the feeding recess 16 adjacent in the rotation direction of the horizontal axis feeding roll 15 is located farther than the width of the feeding recess 16 located in the rotation direction of the horizontal axis feeding roll 15, and The feeding concave portion 16 adjacent in the axial direction is a thick seeding / thinning / sowing device for a seedling raising container that is configured to be located farther than the length of the feeding concave portion 16 located in the axial direction of the horizontal shaft feeding roll 15. Things.
The invention of claim 5 is configured such that the horizontal axle 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 axle feeding roll 15. On the outer surface side, when the ring plate 30 is overlaid, a 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 provided alternately in the rotation direction of the horizontal axis feeding roll 15, The recesses 31 are large enough to fit approximately one seed, and two of the recesses 31 are arranged on one ring plate 30 in the axial direction of the horizontal advancing roll 15. This is a thick seeding and thin seeding for seedling raising container 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 at a predetermined position on the inner surface side with a boss portion 40 provided with a mounting hole 37 of a mounting shaft 36 inserted so as to penetrate the stacked ring plates 30. A thick seeding / thinning / single seeding apparatus for a seedling raising container provided with a protrusion 41 on one side of the part 40 and a fitting hole 42 on the other side in which the protrusion 41 fits.
According to the invention of claim 7, the horizontal axis feeding roll 15 for supplying seeds is rotated below the supply hopper by the transfer means of the transfer table 1 at a position above the seedling growing container A being transferred. In the method of sowing the seed fitted into the feeding recess 16 on the outer peripheral surface into the seedling raising container A, in a thin sowing state, the horizontal axis feeding roll 15 is rotated at a predetermined low speed, and the seed is returned above the horizontal axis feeding roll 15. The tip of the rotating brush 19 sweeps back the seed located on the upper side in the feeding recess 16, and a plurality of seeds are fitted in a row in the feeding recess 16 of the horizontal groove so that the horizontal shaft feeding roll 15 The seeds are alternately sowed in the rotation direction and the axial direction, and are staggered in the seedling raising container A so as to be longer in the axial direction than the rotation direction of the horizontal advancing roll 15. Feeding roll 15 and seed return rotating brush 9 is rotated faster than the thin sowing state, and the seed return rotating brush 19 is rotated at a lower rotation speed than the rotation increase rate of the horizontal shaft feeding roll 15 to rotate. The tip of the seed return rotating brush 19 is rotated with a predetermined gap in a range where the seeds do not pass between the outer peripheral surfaces of the horizontal axle feeding rolls 15, and the seeds are fed three times or more in comparison with the thin sowing state. A seeding method for thick seeding and thin sowing for a seedling raising container that enables seeding by fitting the same to the seeding 16 and thick seeding and thin sowing by the same horizontal axis feeding roll 15.

According to 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, and the roll outer surface portion 24 having substantially the same area is provided between the adjacent feeding recesses 16. 16 and the roll outer surface portion 24 are arranged in a zigzag shape that is longer in the axial direction than in the rotation direction, and the number of rotations of the horizontal axis feeding roll 15 and the seed return rotation brush 19 can be changed. Despite being the horizontal axle feeding roll 15, a configuration capable of both thick sowing and thin sowing can be realized, and 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. Can be sown alternately in the width direction and the transfer direction of the seedling raising container A so as to be staggered, so that the seedlings are evenly sown throughout the seedling raising container A, and a healthy seedling can be obtained. Seed rotation in thick sowing state Since the increase in the number of rotations of the brush 19 is set low, it is possible to prevent the seeds from scattering and reducing the number of seeds fitted into the feeding recess 16 due to excessive sweeping-back action of the seed return rotating brush 19, and thus to be smooth. Thick sowing, and a structure that combines thick sowing and thin sowing can be realized.
According to the second aspect of the invention, the seed return rotating brush 19 is configured so as to be adjustable in position with respect to the outer peripheral surface of the horizontal shaft feeding roll 15, and the tip of the seed return rotating brush 19 faces the feeding recess 16 in a thin sowing state. In a thick sowing state, a predetermined gap is set in a range where the seeds do 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. The seeds that are not fitted into the concave portion 16 can be reliably swept back, and the amount of seeds fitted into the feeding concave portion 16 can be increased in thick sowing, so that a configuration that combines thick sowing and thin sowing can be realized.
According to the third aspect of the present invention, the feeding recess 16 has a width in the rotation direction set to a predetermined width H in which substantially one lateral seed can enter, and the depth thereof is such that a part of the seeds overlap with each other in the depth direction in the feeding recess 16. Since the seeds are configured to have a predetermined depth F to be fitted, the amount of seeds fitted to the feeding recess 16 in thick sowing can be increased, and a configuration for both thick sowing and thin sowing can be realized.
According to the fourth aspect of the present invention, the feeding recess 16 is formed in a horizontally elongated groove shape in which the length of the horizontal shaft feeding roll 15 in the axial direction is at least 5 times or more the width of the horizontal shaft feeding roll 15 in the rotation direction. As a result, the amount of seeds fitted into the feeding recess 16 in thick sowing can be increased, and a configuration that combines thick sowing and thin sowing can be realized.
According to the fifth aspect of the present invention, the two concave portions 31 are provided in one ring plate 30 and the slits 17 are provided at the boundaries of the concave portions 31, so that the production and assembly of the horizontal shaft feeding roll 15 can be facilitated.
In the invention of claim 6 , each ring plate 30 is provided at a predetermined position on the inner surface side with a boss portion 40 provided with a mounting hole 37 of a mounting shaft 36 inserted so as to penetrate the stacked ring plates 30. The projecting portion 41 is provided on one side of the portion 40, and the fitting hole 42 for fitting the projecting portion 41 is provided on the other side. Manufacturing and assembly can be facilitated.
According to the invention of claim 7 , in thin sowing, the seed group G fitted in the feeding recess 16 and the space portion K having the same size as the seed group G are alternately staggered in the width direction and the transfer direction of the seedling raising container A. , So that the seedlings can be seeded evenly over the entire seedling raising container A, and healthy seedlings can be obtained. In the thick seeding state, the rotation speed of the horizontal axis feeding roll 15 is increased. While rotating the seed return rotating brush 19 at a low rotation speed, the tip of the seed return rotating brush 19 had a predetermined gap between the outer peripheral surfaces of the horizontal shaft feeding roll 15 so that the seeds did not pass through. Since the seeds are rotated in a state, a large amount of seeds can be sowed at a high density with a high density, and the same horizontal-axis feeding roll 15 can be used for sowing a thick sowing and a thin sowing.

The longitudinal side view of a seeding apparatus, and a partial sectional view of a row sowing guide. Partial perspective view of a feeding roll. Schematic diagram sown in a nursery container. The schematic diagram which was sown in the conventional seedling raising container. FIG. 6 is a partially cutaway front view of a supply roll according to another embodiment. FIG. FIG. FIG. The longitudinal section front view of a ring board. The longitudinal section front view with a part omitted of a seeding block. A longitudinal front view and a longitudinal side view of a seeding block in a thinly sown state. The vertical section front view and vertical section side view of the seeding block of a thick sowing state. FIG. 5 is a perspective view of a state where the mounting shaft is inserted through the ring plate. The perspective view showing the state where the side plate is attached to the seeding 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 table for transferring a seedling raising container A, and a seeding device H for supplying seeds (seed rice) to the seedling raising container A being transferred is provided above the transfer table 1. .
Although not shown, the transfer table 1 may have transfer means such as a roll or a belt of the seedling raising container A, and is mounted on the floor with supporting legs.
In the seeding apparatus H, the frame 10 is provided above the transfer table 1. A seed supply hopper 11 is detachably attached to the frame 10.

  A lower portion 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, there is provided a horizontal-axis feeding roll 15 having a large diameter in the left-right direction where the seed is fed. On the outer peripheral surface of the horizontal shaft feeding roll 15, a feeding recess 16 into which the seed is fitted is provided. 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 advancing roll 15, and the seed is fitted into the feeding recess 16 at 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 axis feeding roll 15. The feeding recess 16 has a width in the rotation direction of the horizontal-axis feeding roll 15 set to a predetermined width H in which substantially one horizontal seed can enter.
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 at which a part of the seeds overlaps and fits in the feeding recess 16.
Therefore, when the horizontal axle feeding roll 15 is rotated at a high speed, a part of the seeds in the feeding recess 16 overlap with each other in the axial direction of the horizontal axle feeding roll 15 and are fitted to each other. It is possible to fit a much larger number of seeds into the feeding recess 16 than the number of seeds obtained by dividing the seeds, and together with the high-speed rotation of the horizontal shaft feeding roll 15, about four times as many seeds as in thin sowing. Thick sowing of quantity is possible.

Slits 17 are provided on the entire outer circumference of the outer peripheral surface of the horizontal axis feeding roll 15 at intervals smaller than the lateral length (interval) of one seed in the generatrix direction (lateral direction). The depth of the slit 17 is substantially the same as or slightly deeper than the feeding recess 16, and a scraping knife 18 is fitted into each slit 17.
A seed return rotating brush 19 is provided on the rear side (downward side) slightly after the rotation just above the horizontal shaft feeding roll 15.
The rotation number of the horizontal axis feeding roll 15 and the seed return rotating brush 19 is reduced in a thin sowing state, and increased in a thick sowing state.

In addition, the rotation number changing configuration of the horizontal axis feeding roll 15 and the seed return rotation brush 19 is arbitrary, and when rotating by driving from the transfer table 1, the gears in the transmission path have different numbers of teeth. The horizontal shaft feed roller 15 and the seed return rotating brush 19 can be shifted by the speed change motor (not shown) independently of the transfer stage 1. It is good also as a structure which changes a rotation speed by driving rotation.
In this case, the number of rotations of the horizontal axis feeding roll 15 and the seed return rotating brush 19 during thick sowing makes the rotation increasing rate of the seed returning rotary brush 19 relatively lower than the rotation increasing rate of the horizontal axis feeding roll 15.

That is, when the rotation speed of the seed return rotation brush 19 is increased at the same rate of increase as that of the horizontal axis feeding roll 15, the sweeping back action of the seed return rotation brush 19 is increased, and the number of seeds fitted to the feeding recess 16 is reduced. However, by relatively lowering the rate of rotation increase of the seed return rotating brush 19, thick seeding can be performed smoothly.
The seed return rotating 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 the thin seeding, the tip of the seed returning rotary brush 19 is brought close to the feeding recess 16 to reliably sweep back the seeds, thereby realizing a predetermined amount of the thin seeding.
The configuration of the position adjusting mechanism of the seed return rotary brush 19 is arbitrary, but as an example, a bearing in which the brush rotary shaft 19B is inserted into the long hole 19A provided in the side plate of the frame 10 and the brush rotary shaft 19B is mounted. Move and adjust the position of 19C.

That is, when the tip of the seed return rotating brush 19 is positioned in the feeding recess 16 in the thin sowing state, fitting of an extra seed into the feeding recess 16 is suppressed, and a predetermined amount of thin sowing is realized. 11).
Further, at the time of thick sowing, the position is adjusted so that a gap is formed between the tip trajectory of the seed return rotating brush 19 and the outer peripheral surface of the horizontal axis feeding roll 15 such that the seed does not pass (FIG. 12).
Thereby, the seeds that are swept back during thin sowing are also prevented from contacting with the tip of the seed return rotating brush 19 due to the gap, and are kept in the feeding recess 16 so as to fit under the seed returning rotary brush 19. Thick sowing can be realized by increasing the total amount of seeds that pass through and fit into the feeding recess 16.

A seed derivative 20 for guiding the seeds 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 rotation direction of the seed return rotating brush 19.
The seed derivative 20 is attached to the side surface of the horizontal axis feeding roll 15 so as to be freely adjustable, and is separated from the outer peripheral surface of the horizontal axis feeding roll 15 at the time of thick sowing than at the time of thin sowing.
Therefore, as in the case of the seed return rotating brush 19, it is possible to guide the seeds that partially protrude from the feeding recess 16 to the lower side than at the time of thin sowing, and to reliably induce the seed derivative 20 at the time of thick sowing. I do.
The horizontal axis feeding roll 15 is formed to have a large diameter of 150 mm or more, and the front end of the front guide plate 12 of the seed supply hopper 11 is located on the side of the rotation ascending side from directly above the horizontal axis feeding roll 15, and the feeding recess is provided. In this case, the seeds can be fitted well into the 16.

Thus, the seeding by the horizontal axis feeding roll 15 is performed by fitting a predetermined amount of seeds into the feeding recess 16, and a seed group G having a predetermined amount of a plurality of seeds fitted into the feeding recess 16, and this seed group G is substantially Seeding is performed so that the space portions K of the same size are alternately arranged in a staggered manner in the width direction and the transfer direction of the seedling raising container A (FIG. 3).
The sowing by the sowing apparatus H includes so-called thin sowing in which about one go (180 cc) of seed is sown in one seedling raising container A and so-called thick sowing in which about four go (720 cc) are sown in the same one seedling raising container A. The aim is to obtain healthy adult seedlings with thin sowing, and to reduce seedling costs and save labor by obtaining a large amount of seedlings with thick sowing.

When the rotation speed of the horizontal advancing roll 15 having the above configuration is relatively increased with respect to the transfer speed of the seedling raising container A by the transfer table 1, the supply amount (seeding amount) of seeds increases, resulting in thick sowing. If 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 table 1, the amount of seed supplied (the amount of seeding) decreases, resulting in thin sowing.
That is, in the conventional sowing method, when this thin sowing is performed, there is no other way but to reduce the rotation speed of the horizontal axis feeding roll 15. In the conventional sowing method, as shown in FIG. , A row of seed groups G is sown, and the seed row G of each row of seed groups G in the length direction of the seedling growing container A is widened. As a result, the seed group G is sown in the length direction of the seedling growing container A. The seeding density of the seed group G in one row is higher than the density, the seeding is not evenly sown in the entire seedling raising container A, and healthy seedlings cannot be expected. Further, in the case of a conventional roll of a linear feeding concave portion, merely increasing the rotation speed limits the seeding amount.

According to the present invention, as shown in the schematic diagram of FIG. 3, the seed group G fed out from the feeding recess 16 and the space K without the seed group G are arranged in the width direction and the transfer direction of the seedling raising container A as shown in FIG. Since the seeds G are alternately sown, the seed group G is arranged in a staggered manner on the seedling raising container A, so that the seeds can be sowed evenly as a whole even in the case of thin sowing with a small amount of seeds. (Planted seedlings) can be obtained.
Note that, in the schematic diagram of FIG. 3, the seed group G is shown in a straight line for easy understanding. However, due to various factors such as the degree of fitting into the feeding recess 16 and the size of the seed, FIG. As described above, in the actual seeding state, the seedling raising container A is shifted back and forth in the transfer direction. In this point, the seedling raising container A is evenly seeded.

  In addition, as shown in FIG. 11, in the thin sowing, the laterally oriented seeds are fitted into the feeding concave portion 16 one by one in a line in the length direction of the seeds, and are fed out. The seeding interval can also be equalized, and the uniform sowing accuracy is improved. However, in the thick sowing state, the depth F of the feeding recess 16 is set to a depth at which a part of the seeds overlap with each other and fit in the feeding recess 16. Therefore, the seeds adjacent to each other in the feeding recess 16 overlap each other vertically (FIG. 12), and as a result, the seed obtained by dividing the length of the feeding recess 16 by the length of the seed. A much larger number of seeds than the number of seeds can be fitted into the feeding recess 16, and together with the high-speed rotation of the horizontal feeding roll 15, the thick seeding of about four times the seed amount at the time of thin sowing is achieved. It becomes possible.

As described above, the method of dispersing the seed group G and the space portion K alternately in a staggered manner in the width direction and the transfer direction of the seedling raising container A and sowing as described above is optional, but the horizontal groove-shaped extending concave portion is used. 16 is provided over the entire circumference in the rotation direction of the horizontal advancing roll 15, and a feeding recess having 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. 16 and a roll outer surface portion 24 having the same area are provided alternately in the generatrix direction of the horizontal axle feeding roll 15 (FIG. 2).
2 omits illustration of the slit 17 into which the scraping knife 18 fits, in order to facilitate understanding of the arrangement of the feeding recess 16 and the space portion K. The slits 17 may be provided at intervals shorter than the horizontal length (interval) of the seed grains.

FIG. 6 shows another embodiment of the horizontal axis feeding roll 15, which is formed by dividing the horizontal axis feeding roll 15 into a plurality of sowing blocks 25 in the axial direction of the horizontal axis feeding roll 15. Each seeding block 25 is formed in a horizontal direction so that the feeding recesses 16 in a straight line parallel to the generatrix direction are formed, and the seeding recesses 16 of the respective seeding blocks 25 are not located on the same straight line (generating line) in the generatrix direction. The phase is changed while being shifted in the rotation direction of the shaft feeding roll 15.
That is, a plurality of the seeding blocks 25 are provided for each predetermined length (a predetermined width in the left-right direction) of the horizontal axis feeding roll 15 in the axial direction, and the feeding recesses 16 of each seeding block 25 are sowed in the generatrix direction of the seeding block 25. The seeding blocks 25 are displaced in the circumferential direction so as not to be located on the same straight line (on the same generatrix) (FIGS. 6 and 7).

Reference numeral 26 denotes a side surface of the roll outer surface portion 24 of the adjacent seeding block 25.
Therefore, the roll outer surface part 24 of the adjacent seeding block 25 is located beside the feeding concave part 16 of the seeding block 25, and the feeding concave part 16 of the adjacent seeding block 25 is alternately positioned beside this roll outer surface part 24. Therefore, the seed group G and the space K of the seedling raising container A are arranged in a staggered manner in the transfer direction (length direction) and the width direction of the seedling raising container A.
Therefore, as shown in the schematic diagram of FIG. 3, the seeds fitted into the feeding recess 16 of the horizontal axis feeding roll 15 are fed out as a seed group G for each sowing block 25 and dispersed in a staggered manner, and the seed amount is extremely large. Even in the case of thin sowing, the sowing interval can be equalized not only in the transport direction of the seedling raising 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, thick sowing can be performed by rotating the horizontal-axis feeding roll 15 quickly, and by rotating the horizontal-axis feeding roll 15 slowly, the rotation direction is also increased. Can be evenly distributed.
The manufacturing method (assembly method) of the horizontal axle feeding roll 15 is arbitrary, but in the present embodiment, a ring-shaped ring plate 30 having a predetermined thickness is formed by injection molding of a synthetic resin or the like. Are formed in the horizontal axis feeding roll 15 by superposing a plurality of them in the axial direction.
On the outer surface side of each ring plate 30, a pair of concave portions 31 serving as the feeding concave portions 16 of the horizontal shaft feeding roll 15 when the ring plates 30 are stacked is provided, and a slit 17 is formed between the pair of concave portions 31.
That is, two pieces are arranged side by side on one ring plate 30 in the axial direction of the horizontal axle 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 projection T and a fitting recess P in which the fitting projection T is fitted so as to remain fitted to each other when overlapped. 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. A flange portion 34 is provided, and the flange portion 34 constitutes the fitting concave portion 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 respective ring plates 30 are overlapped, 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 do not come off from each other. The state is maintained, and the work of stacking the ring plates 30 is facilitated.

Further, when the ring plate 30 is overlapped, the flange portion 34 comes into contact with and fits on the inner side surface formed by the fitting step portion 33, so that positioning in the fitting direction is performed, and the flange portion 34 and the roll outer surface portion 24 are positioned. The dimensional accuracy of the slit 17 formed by the slit step 35 between the side surface 26 can be ensured.
Each ring plate 30 is provided with a boss portion 40 provided with a mounting hole 37 for inserting a mounting shaft 36 described later at a predetermined position on the inner surface (inside in the radial direction), and the boss portion 40 is fitted on one side. A projection 41 forming a part of the joint projection T is provided, and a fitting hole 42 forming a part of the fitting recess P is provided on the other side.

Therefore, when the respective ring plates 30 are overlapped, the projection 41 of the boss portion 40 and the fitting hole 42 are aligned, so that the projection 41 and the fitting hole 42 are positioned when the ring plates 30 are overlapped, and the ring plate 30 is positioned. Facilitates stacking work.
The projecting portion 41 and the flange portion 34 project from the left and right side surfaces of the ring plate 30 in opposite directions, and the projecting portion 41, the fitting hole 42, the flange portion 34, and the fitting step portion 33 are fitted to each other. Each ring plate 30 is firmly fitted.
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 held in a fitted state, so that the work of stacking the ring plates 30 is facilitated.

The method of stacking the ring plates 30 is arbitrary. 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 30A is attached to the protrusion 41 (flange portion 34) of the ring plate 30A. The fitting hole 42 (fitting step portion 33) of 30B is overlapped (FIG. 15A), and then the ring plate 30C is overlaid on the ring plate 30B (FIG. 15B). Then, the four ring plates 30 are stacked to form a seeding block 25A (FIG. 15C).
Thereby, in the seeding block 25A, the concave portions 31 of each ring plate 30 are arranged in a straight line, and each concave portion 31 forms one extension concave portion 16.

  Next, the side surface 26 of the roll outer surface portion 24 of the first ring plate 30B to be the next seeding block 25B is positioned above the concave portion 31 (extending concave portion 16) of the uppermost ring plate 30A of the seeding block 25A. Then, the dispensing concave portion 16 of the seeding block 25A and the concave portion 31 of the ring plate 30B of the next sowing block 25B are superimposed with a different phase (FIG. 15C). The seeding block 25B is overlaid (FIG. 15D).

  Next, above the uppermost ring plate 30A of the seeding block 25B, the first ring plate 30B to be the next seeding block 25C is inserted into the recess 31 (extending recess 16) of the seeding block 25B and the seeding block 25C. It overlaps with the concave portion 31 (the feeding concave portion 16) with a different phase (FIG. 15D), and this is repeated so that the four ring plates 30 constituting the seeding block 25 are sequentially overlapped with a different phase. Upon repetition, a predetermined number of the seeding blocks 25A to 25E form a horizontal width feeding roll 15 having a predetermined width.

In the present embodiment, five stages of sowing blocks 25A to 25E are superposed on one another to form one horizontal roll 15 and side plates 44 are fitted to both upper and lower (left and right) surfaces of the five stages of sowing blocks 25. Then, 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 a fixing nut 46 is screwed into the protruding portion of the mounting shaft 36. The ring plate 30 of each seeding block 25 is fixed by the side plate 44 (FIG. 15E).
Therefore, the extension concave portion 16 of the ring plate 30 of the next seeding block 25 faces the side surface 26 of the roll outer surface portion 24 of the ring plate 30 of each seeding block 25 (FIGS. 7 and 8).

  That is, six mounting holes 37 of the ring plate 30 are formed at regular intervals in the rotation direction of the horizontal shaft feeding roll 15, and the feeding recess 16 is arranged by dividing the entire circumference of the horizontal shaft feeding roll 15 into 45 equal parts. Since the mounting holes 37 of the next ring plate 30B of the next seeding block 25B of the seeding block 25A of the seeding block 25A on which the ring plates 30 are already stacked are arranged with a phase difference of 60 degrees, as shown in FIG. The side surface 26 of the roll outer surface portion 24 of the next seeding block 25B is located between the feeding recessed portions 16 of the seeding block 25A and is staggered.

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 completion of the stacking operation of the ring plates 30 in FIG. 13 and the like. The order of assembling the roll 15 is not limited.
Reference numeral 47 denotes a roll rotation shaft of the horizontal advancing roll 15.
Each ring plate 30 is configured by providing a slit 17 between a pair of recesses 31 (FIG. 10).
Therefore, the ring plate 30 has a pair of concave portions 31 in forming the horizontal axis feeding roll 15 as compared with the case where one ring plate 30 has a single concave portion 31. It is sufficient to prepare half the number of the ring plates 30 with respect to the number of the concave portions 31 necessary for constituting the horizontal axle feeding roll 15, thereby reducing the number of parts and facilitating manufacture and assembly.

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

Therefore, each ring plate 30 is positioned in the rotation direction of the horizontal shaft 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.
In addition, since each ring plate 30, the mounting shaft 36, and the left and right side plates 44 are members of each other's strength, the horizontal shaft feeding roll 15 can be assembled without requiring a separate frame frame of the roll, and 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 concave portion (extending concave portion 16) 31 is provided at a position corresponding to the concave portion (extending concave portion 16) 31 of the ring plate 30 (FIGS. 5 and 14).
Therefore, the seeding block 25 of the horizontal axis feeding roll 15 is formed to have the same width as the inner width of the seedling raising container A, and the side plate 44 of the horizontal axis feeding roll 15 located above the side wall 51 of the seedling raising container A is also provided with a concave portion. Since the recesses 16) 31 are provided, the seeds can be sufficiently dropped on the left and right sides of the seedling raising container A in which the amount of falling seeds is small.

Incidentally, in the present embodiment, the diameter of the horizontal axis feeding roll 15 is 150 mm, the horizontal width of the horizontal axis feeding roll 15 is about 313 mm, the horizontal width of the concave portion 31 is about 6 mm, and the slit 17 is about 1 mm. .2 mm, the lateral width of the ring plate 30 is about 14 mm, and the seeding block 25 is composed of four ring plates 30, so that the lateral width of each seeding block 25 is about 56 mm (FIG. 5).
Therefore, in the case of a seed (seed rice) having an average of about 6 millimeters, one grain fits into the recess 31 and eight grains fit 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 are partially overlapped and fitted together is not taken into account, and may differ from the actual number of seeds.)

Also, since the horizontal-axis feeding roll 15 has five sowing blocks 25 arranged side by side, the width of the horizontal-axis feeding roll 15 with the feeding recess 16 is 280 mm, which is the same as the inner width of the seedling raising container A, On both left and right sides of the ring plate 30 of the seeding block 25, recesses (extending recesses 16) 31 of the side plate 44 of about 2 mm are provided, so that the seeding amount on the left and right sides of the seedling raising container A is leveled.
A predetermined number of the ring plates 30 are stacked to assemble the seeding blocks 25 in advance, a predetermined number of sets of the seeding blocks 25 are stacked, and the mounting shafts 36 are inserted into the mounting holes 37 of the ring plate 30B of the seeding blocks 25. A disc-shaped fixing side plate 44 is brought into contact with each outside of the plate 30, and a fixing member (nut or bolt) 46 is screwed and fixed to the mounting shaft 36 outside the left and right side plates 44. Alternatively, a single horizontal axis feeding roll 15 may be used.

Thus, a line sowing guide 52 is detachably provided below the horizontal axis feeding roll 15. The row seeding guide 52 is provided with a divided dropping port 54 formed by a side-by-side guide body 53 and is attached vertically by a link mechanism 55.
That is, when the row seeding guide 52 comes into contact with the front and rear walls of the seedling raising container A during transfer, the seeding guide 52 is moved up and down by the link mechanism 55, and the guide body 53 guides the seeds to the divided drop openings 54. The sowing apparatus H incorporating the horizontal axle feeding roll 15 can also perform so-called sowing by dropping the seeds into the seedling raising container A in a strip shape by attaching the sowing guide 52. Versatility can be improved.

(Operation of the embodiment)
The present invention is configured as described above. When seeds are put into the seed supply hopper 11 of the seeding apparatus H and the seedling raising container A is supplied and transferred to the transfer table 1, the seeds in the seed supply hopper 11 The seed is guided to the side guide plate 13 and reaches the seed fitting portion 14. The seed fitting portion 14 fits into the feeding recess 16 of the horizontal shaft feeding roll 15 that rotates, and the seed fitted into the feeding recess 16 returns the seed. Seeds that pass below the rotating brush 19 and do not fit into the feeding recess 16 are swept back to the seed fitting portion 14.

The seed in the feeding recess 16 that has passed below the seed return rotary brush 19 is moved downward by the seed derivative 20 that is in close contact with the side surface of the horizontal-axis feeding roll 15, and when the seed passes through the lower end of the seed derivative 20, the transfer table 1 is moved. Is seeded in the seedling raising container A which is being transferred.
In this case, when the rotation speed of the horizontal axis feeding roll 15 is increased with respect to the transfer speed of the seedling container A by the transfer table 1, the supply amount of seeds (seeding amount) increases, so-called thick sowing occurs, and the horizontal shaft feeding roll 15 If the number of rotations of the seedling is reduced with respect to the transfer speed of the seedling raising container A by the transfer table 1, the seed supply amount (seeding amount) is reduced and the seeding is thinly performed. When the rotation speed of the roll 15 is reduced, as shown in FIG. 4, the seeding row interval is increased in the length direction of the seedling raising container A, sowing density of the seed group G in one row is increased, and seeding is not evenly performed. Become.

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

  That is, if the seeds are simply sown in a straight line in the generatrix direction of the horizontal axis feeding roll 15, the seeds are densely packed in the generatrix direction, so healthy seedlings cannot be expected. However, in the present invention, the seed group G and the space K Are distributed and sowed in a staggered manner alternately in the width direction as well as in the transport direction of the seedling raising container A, and the uniform sowing accuracy can be improved.

  The seed group G and the space portion K may be alternately dispersed and staggered in the width direction and the transfer direction of the seedling raising container A, and the seeding may be performed. A roll outer surface 24 having no feeding recess 16 for forming a space K having the same left and right length as the feeding recess 16 in which the seed group G is fitted is provided along with the entire circumference of the feeding roll 15 in the rotation direction. Since the horizontal axis feeding roll 15 is provided alternately in the generatrix direction, when the horizontal axis feeding roll 15 rotates, the seeds dropped from the feeding recess 16 become a seed group G and pass below the roll outer surface portion 24. The portion of the seedling raising container A becomes the space portion K, and the seed group G and the space portion K are alternately located not only in the transport 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 the shape of a horizontal groove parallel to the generatrix direction (left-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 rotation direction of the seeds which is approximately one. Since the horizontal width of the roll 15 is low, the seeds are fitted into the feed recess 16 without overlapping, so that the seed can be thinly sown.
Further, since the depth of the feeding recess 16 is configured to have a predetermined depth F in which a part of the seeds overlap with each other and fit in the feeding recess 16, a part of the seed in the feeding recess 16 is The horizontal advancing rolls 15 are fitted to each other in the axial direction so as to overlap with each other, and a much larger number of seeds are fitted into the feeding recesses 16 than the number of seeds obtained by dividing the length of the feeding recesses 16 by the length of the seeds. In combination with the high-speed rotation of the horizontal advancing roll 15, the seed sowing of about 4 times the seed amount as in the thin sowing is possible.

Since the slits 17 of the horizontal axis feeding roll 15 are provided on the entire circumference at intervals shorter than the horizontal width of one seed in the generatrix direction (horizontal direction), the slits 17 are overlapped and fitted. The seeding knife 18 always comes into contact with the seed and can be scraped out from the feeding recess 16.
The rotation of the seed return rotating brush 19 and the horizontal shaft feeding roll 15 provided on the rear side (downward side) slightly above the horizontal shaft feeding roll 15 slightly below the right above the horizontal shaft feeding roll 15 are fitted in the feeding recess 16 because the rotation speed is slowed down in a thin sowing state. Unseeded seeds are swept back by the seed return rotating brush 19 to realize uniform thin sowing.

On the contrary, in the thick sowing state, the number of rotations of the horizontal axis feeding roll 15 and the seed return rotating brush 19 is increased as compared with the thin sowing state, so that the fitting of the seed into the feeding recess 16 is made smooth and reliable.
That is, when the rotation of the horizontal-axis feeding roll 15 is increased, the amount of seeds rotating together with the horizontal-axis feeding roll 15 is increased, but the rotation speed of the seed return rotating brush 19 is also increased. The degree of accumulation of the seeds at the contact portion of the rotating brush 19 is made constant, and the fitting of the seeds is made smooth and reliable.

In this case, the number of rotations of the horizontal axis feeding roll 15 and the seed return rotating brush 19 at the time of thick sowing is set such that the rotation increasing rate of the seed return rotating brush 19 is relatively lower than the rotation increasing rate of the horizontal axis feeding roll 15. Therefore, it is possible to prevent the seeds from being scattered and the number of seeds fitted into the feeding recess 16 from being reduced due to excessive sweeping-back action of the seed return rotating brush 19, and to smoothly and thickly sow.
Since the seed return rotating brush 19 is configured so as to be adjustable in position with respect to the outer peripheral surface of the horizontal shaft feeding roll 15, in thin seeding, the tip of the seed returning rotary brush 19 is brought closer to the feeding recess 16, so that the seed return rotating brush 19 is securely inserted. The seeds are swept back to achieve a predetermined amount of light sowing.

In other words, when the tip of the seed return rotary brush 19 faces the inside of the feeding recess 16 in the thin sowing state, the fitting of extra seed into the feeding recess 16 is suppressed, and a predetermined amount of thin sowing is realized.
Further, at the time of thick sowing, the position can be adjusted so that a gap is formed 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 seed does not pass. Even if the seeds fit into the feeding recess 16 and strictly protrude from the seed feeding recess 16, such seeds are prevented from being swept back by the seed return rotating brush 19, and are placed in the feeding recess 16. The amount of seeds to be fitted can be increased, and thick sowing can be realized.

  A seed derivative 20 for guiding the seeds fitted in the feeding recess 16 to the lower side is provided on the side surface of the horizontal axis feeding roll 15 on the lower side in the rotation direction of the seed return rotating brush 19, and the seed derivative 20 is formed of the horizontal axis feeding roll 15. Since it is attached to the side surface so as to be adjustable in position, it is possible to guide the seed partially protruding from the feeding concave portion 16 to the lower side, so that the seed is guided at the time of thick sowing.

  In the embodiment of FIG. 5, the horizontal-axis feeding roll 15 is divided into a plurality of seeding blocks 25 in the axial direction of the horizontal-axis feeding roll 15, and the feeding concave portions 16 of each of the seeding blocks 25 are positioned on the same straight line. In order to prevent this, the roll outer surface portion 24 of the adjacent seeding block 25 is positioned beside the feeding recess 16 of the seeding block 25 because the horizontal shaft feeding roll 15 is arranged so as to be shifted in the rotation direction. Since the feeding recesses 16 of the adjacent sowing blocks 25 are alternately located beside the outer surface 24, the seed group G and the space K of the seedling raising container A are moved in the transfer direction (length direction) and the width direction of the seedling raising container A. They are arranged in a staggered pattern.

Therefore, as shown in the schematic diagram of FIG. 3, the seeds fitted into the feeding recess 16 of the horizontal axis feeding roll 15 are fed out as a seed group G for each sowing block 25 and dispersed in a staggered manner, and the seed amount is small. Even in the case of thin sowing, the sowing interval can be equalized 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 the seeds are simply sown by the horizontal axis feeding roll 15 provided with the feeding recess 16 formed in a straight line in the generatrix direction, the seeds are densely arranged in the generatrix direction, and the interval in the rotation direction of the horizontal axis feeding roll 15 is wide. However, in the present invention, since the seeding 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 shaft feeding roll 15. Then, the seed group G is dispersed in a staggered manner as shown in FIG.

As described above, in the seeding apparatus H of the present invention, the above-described uniform thin sowing and seeding can be realized by rotating slowly, and the thick sowing work can be performed by increasing the rotation of the horizontal axis feeding roll 15. (1) The versatility of one seeding device can be improved.
The manufacturing method (assembly method) of the horizontal axle feeding roll 15 is arbitrary, but in the present embodiment, a ring-shaped ring plate 30 having a predetermined thickness is formed by injection molding of a synthetic resin or the like. Are formed on the horizontal axis feeding roll 15 by overlapping a plurality of in the axial direction, so that the production can be performed at a lower cost as compared with the production by cutting.

  On the outer surface side of each ring plate 30, a pair of concave portions 31 serving as the feeding concave portions 16 of the horizontal shaft feeding roll 15 when the ring plates 30 are stacked is provided, and a slit 17 is formed between the pair of concave portions 31. A fitting step 33 is provided on one side of the side surface of the ring plate 30, and a flange 34 for fitting to the fitting step 33 is provided on the other side of the fitting step 33. Since the 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, when the ring plates 30 are overlapped with each other, Since the portion 33 and the flange portion 34 are fitted and fitted, the work of stacking the ring plates 30 is facilitated.

In addition, 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 is formed. The slits 17 are formed between the adjacent ring plates 30 by the portions 35, and the slits 17 are arranged in the axial direction in cooperation with the slits 17 between the pair of concave portions 31. It can be manufactured at a lower cost than when the slit step 35 is provided.
At a predetermined position on the inner surface side of each ring plate 30, a boss portion 40 having a mounting hole 37 into which a mounting shaft 36 to be described later is inserted is provided, and a protruding portion 41 is fitted on one side of the boss portion 40 and fitted on the other side. Since the mating hole 42 is provided, when the ring plates 30 are overlapped, the projecting portion 41 of the boss portion 40 and the fitting hole 42 are aligned, so that the projecting portion 41 and the fitting hole 42 are positioned when they are overlapped, The work of stacking the ring plates 30 is facilitated.

Further, when the ring plates 30 are overlapped, the projecting portion 41 of the boss portion 40 and the fitting hole 42 are fitted and fitted, so that the work of stacking the ring plates 30 is facilitated.
The method of stacking the ring plates 30 is arbitrary. For example, the next ring plate 30B is placed on the ring plate 30A placed at a predetermined position 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 four ring plates 30 are stacked to form a seeding block 25A. The concave portions 31 of the above-mentioned portions serve as the extended concave portions 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 seeding block 25A, and the ring plate is placed above the concave portion 31 (extending concave portion 16) of the ring plate 30A. The phase of the uppermost ring plate 30A of the seeding block 25A and the concave portion 31 (extending concave portion 16) of the ring plate 30B of the next sowing block 25B are changed so that the side surface 26 of the roll outer surface portion 24 of 30B is located. By overlapping and repeating this, the four ring plates 30 are overlapped to form the seeding block 25B.

  When four ring plates 30 constituting the seeding block 25 are sequentially repeated above the seeding block 25B so as to be superimposed with different phases, the horizontal axis feeding roll 15 having a predetermined width is formed by a predetermined number of seeding blocks 25. Five seeding blocks 25 are overlapped to form one horizontal axis feeding roll 15, and the side plates 44 are fitted on both upper and lower (left and right) sides of the five seeding blocks 25, and then the boss portion of each ring plate 30. The mounting shaft 36 is inserted through the mounting hole 37 of the mounting plate 40 and the insertion hole 45 of the side plate 44, and a fixing nut 46 is screwed into a protruding portion of the mounting shaft 36, and the ring plate 30 of each seeding block 25 is fixed 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 regular intervals in the rotation direction of the horizontal shaft feeding roll 15, and the feeding recess 16 is arranged by dividing the entire circumference of the horizontal shaft feeding roll 15 into 45 equal parts. Therefore, if the mounting holes 37 of the next ring plate 30B of the next seeding block 25B of the seeding block 25A of the seeding block 25A on which the ring plate 30 is already stacked are arranged with a phase difference of 60 degrees, the seeding block 25A is extended. The side surface 26 of the roll outer surface portion 24 of the next seeding block 25B is located between the concave portion 16 and the feeding concave portion 16 and is arranged in a staggered manner.

  In addition, since each ring plate 30 is formed by providing the slit 17 between the pair of recesses 31, the ring plate 30 is formed by forming one ring plate 30 when forming the horizontal axis feeding roll 15. Compared to the case having a single recess 31, since it has a pair of recesses 31, the number of the recesses 31 required for forming one horizontal axis feeding roll 15 is half the number of the recesses 31. What is necessary is just to prepare the ring plate 30, the number of parts can be reduced, and manufacture and assembly can be facilitated.

Further, since the ring plate 30 is formed with the 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. So that the seeding accuracy can be improved.
In addition, since the side surface 26 of the roll outer surface portion 24 of each ring plate 30 is provided with a concave portion 50 for preventing the occurrence of shrinkage (so-called sink marks) generated during resin molding, the manufacturing accuracy of the horizontal shaft feeding roll 15 is improved. Can be done.

  In the present embodiment, one seeding block 25 is configured by four ring plates 30, and one horizontal axis feeding roll 15 is formed by the five seeding blocks 25. A disk-shaped fixing side plate 44 is provided, and a fixing nut 46 is screwed to the mounting shaft 36 outside the left and right side plates 44. Therefore, each ring plate 30 is laterally moved by the mounting shaft 36 arranged in the circumferential direction. The positioning of the shaft feeding roll 15 in the rotational direction is performed, and the positioning in the left and right direction is performed by the side plate 44.

Therefore, since the horizontal shaft 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 manufacturing and assembling can be performed at low cost.
The outer peripheral surface of the side plate 44 is provided with a concave portion (extending concave portion 16) 31 at a position corresponding to the concave portion (extending concave portion 16) 31 of the ring plate 30, so that the lateral width is the same as the inner width of the seedling raising container A. Even if the axial feed roll 15 is formed, seeds fall from the concave portion (feed concave portion 16) 31 of the side plate 44 of the horizontal axial feed roll 15 located above the side wall 51 of the seedling raising container A, and the seed falling amount 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 guide plate, 13 ... Rear guide plate, 14 ... Seed fitting part, 15 ... Horizontal shaft feeding roll, 16 ... Feeding recess, 17 ... Slit , 18: scraping knife, 19: seed return rotary brush, 20: seed derivative, 24: roll outer surface, 25: seeding block, 26: side surface, 30: ring plate, 31: recess, 33: fitting step , 34: flange portion, 35: slit step, 36: mounting shaft, 37: mounting hole, 40: boss portion, 41: projecting portion, 42: fitting hole, 44: side plate, 45: insertion hole, 46: Fixing nut, 50 recess, 52 sowing guide, 54 split drop opening, 55 link mechanism, A seedling growing container, G seed group, H seed plant, K space, P fitting recess, T: protrusion for fitting.

Claims (7)

Below the supply hopper, a horizontal axle feed roll 15 for supplying seeds to the seedling growing container A being transferred by the transfer table 1 is provided, and an outer peripheral surface of the horizontal axle feed roll 15 is provided in a rotation direction of the horizontal axle feed roll 15, A feeding recess 16 having a predetermined width to which approximately one seed can be fitted, and formed in a horizontal groove shape having a predetermined length parallel to the generatrix direction of the horizontal axis feeding roll 15 and fitting a plurality of seeds. A plurality of the feeding recesses 16 are provided in parallel in the rotation direction and the axial direction of the horizontal shaft feeding roll 15, and between the feeding recesses 16 adjacent in the rotation direction and the axial direction of the horizontal shaft feeding roll 15, the feeding recesses 16 are provided. A roll outer surface portion 24 having substantially the same area as the roll 16 is provided, and the feeding recess 16 and the roll outer surface portion 24 are alternately arranged in the rotation direction and the axial direction of the horizontal shaft feeding roll 15, and 15 longer in the axial direction than the rotation direction A seed return rotating brush 19 is disposed on the lower side of the horizontal axis feeding roll 15 for slightly rotating and lowering the seeds that are not fitted in the feeding recess 16. the rotational speed and modifiable configuration seeded less thin feeding intensive thickness sowing and feeding amount of seeds seeds of the roll 15 seeds back rotary brush 19, and the horizontal axis feed roll 15 the seed return rotary brush 19 In the thin sowing state, the rotation speed of the horizontal shaft feeding roll 15 and the seed return rotating brush 19 is reduced, and in the thick sowing state, the rotation speed of the horizontal shaft feeding roll 15 and the seed return rotating brush 19 is increased. A thick and thin seeding and seeding apparatus for a seedling raising container, wherein the increase in the number of rotations of the seed return rotating brush 19 is set lower than the rate of increase in the rotation of the horizontal axis feeding roll 15. 2. The seed return rotating brush 19 according to claim 1 , wherein a position of the seed returning rotary brush 19 is adjustable with respect to an outer peripheral surface of the horizontal axis feeding roll 15, and a tip of the seed returning rotary brush 19 is located in the feeding recess 16 in the thin sowing state. The seedling raising container has a configuration in which a predetermined gap can be set in a range where seeds do 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 in the thick sowing state. Thick and thin sowing combined seeding equipment. In claim 1 or claim 2 , the feeding recess 16 has a width in the rotation direction that is a predetermined width H that allows one lateral seed to enter, and the depth of the feeding recess 16 is part of the seed in the feeding recess 16 in the depth direction. The seeding apparatus for thick seeding and thin sowing for a seedling raising container, which is configured to have a predetermined depth F which overlaps and fits with each other. In any one of claims 1 to 3, the feeding recess 16 has a length of the horizontal shaft feeding roll 15 in the axial direction at least five times or more the width of the horizontal shaft feeding roll 15 in the rotation direction. The feeding recess 16 which is formed in a horizontally elongated groove shape and is adjacent to the horizontal shaft feeding roll 15 in the rotation direction is located apart from the width of the feeding recess 16 located in the rotation direction of the horizontal shaft feeding roll 15, The feeding recess 16 adjacent to the axial feeding roll 15 in the axial direction is located farther than the length of the feeding recess 16 located in the axial direction of the horizontal feeding roll 15. A combined seeding device. In any one of claims 1 to 4, the horizontal-axis feeding roll 15 has a configuration in which a plurality of ring-shaped ring plates 30 having a predetermined thickness are stacked in the axial direction of the horizontal-axis feeding roll 15. On the outer surface side of each ring plate 30, a concave portion 31 which becomes the feeding concave portion 16 of the horizontal axis feeding roll 15 when the ring plate 30 is stacked, and the roll outer surface portion 24 are arranged in the rotation direction of the horizontal axis feeding roll 15. The recesses 31 are provided alternately and have a size such that substantially one seed can be fitted therein, and two of the recesses 31 are arranged on one ring plate 30 in the axial direction of the horizontal advancing roll 15. A thick and thin seeding and seeding apparatus for a seedling raising container provided with a slit 17 in which a scraping knife 18 for dropping seeds stuck in the feeding recess 16 at a boundary of 31 is provided. The boss portion according to any one of claims 1 to 5 , wherein a mounting hole (37) of a mounting shaft (36) is provided at a predetermined position on the inner surface side of each ring plate (30) so as to penetrate through the stacked ring plates (30). A thick seeding / thinning / seeding device for a seedling container, comprising a boss portion 40, a projection 41 on one side of the boss portion 40, and a fitting hole 42 on the other side.   The horizontal axle feeding roll 15 for supplying seeds is rotated below the supply hopper by the transfer means of the transfer table 1 at a position above the seedling growing container A being transferred, and is fed into the feeding recess 16 on the outer peripheral surface of the horizontal axle feeding roll 15. 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 return rotating brush 19 is fed above the horizontal axis feeding roll 15. The seeds located on the upper side in the concave portion 16 are swept back, and a plurality of seeds are fitted in a line in the feed concave portion 16 of the horizontal groove. The seedlings are alternately sowed and seeded in a staggered manner in the seedling raising container A so as to be longer in the axial direction than the rotation direction of the horizontal axis feeding roll 15. Reduce the number of rotations of the brush 19 The rotation of the seed return rotating brush 19 is reduced while increasing the rotation speed of the seed return rotating brush 19 in comparison with the rotation increase rate of the horizontal shaft feeding roll 15. Is rotated with a predetermined gap in a range where the seeds do not pass between the outer peripheral surfaces of the horizontal axle feeding roll 15, so that three times or more of the seeds are fitted into the feeding recess 16 in comparison with the thin sowing state and sowed. In addition, a method of thick seeding and thin seeding for a seedling raising container that enables thick seeding and thin seeding to be sowed with the same horizontal axis feeding roll 15.

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