JP3752558B2 - Seedling box seeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seeding device for a seedling box seeding machine that continuously performs soiling, sowing and covering with respect to each seedling room of a seedling box in which a large number of seedling rooms are arranged.
[0002]
[Prior art]
In a conventional seedling box sowing machine, a seeding device, a seeding device, and a soil covering device are installed one by one along the transport direction in order, and the seedling box (for example, special The pot seedling box described in Japanese Patent Publication No. 57-22288 is continuously put into soil, seeded and covered.
[0003]
The seedlings grown in this seedling box are transplanted to a field with a known pot seedling transplanter described in Japanese Utility Model Publication No. 1-442977, for example. In this transplanter, the seedlings in each nursery room are pushed out toward the seedling receiving arm together with the root pots by an extrusion punch inserted from the extrusion hole on the bottom side of each nursery room, and reversed by the seedling receiving arm to be conveyed by the conveyor belt After falling upward and being laterally fed, it is further fed to the descending belt by the feed claw, delivered to the planting device while being pinched by the descending belt, and transplanted to the field by the planting device.
If the root pot does not have an appropriate strength during this period, the root pot collapses and machine transplantation cannot be performed. Therefore, in the case of vegetables such as onions with little rooting amount and insufficient soil embedding in a suitable planting period, a solidifying agent such as that described in Japanese Patent Publication No. 3-49525 is mixed in the soil of the seedling box, The root pot needs to be solidified.
[0004]
[Problems to be solved by the invention]
In the conventional sowing machine, when the soil mainly composed of mountain soil is used, the specific gravity of the soil is relatively large and the fluidity is good. There is little variation in the amount of cultivated soil.
On the other hand, in order to surely form a root pot with higher strength, a soil mainly composed of peat moss (for example, 50% or more of peat moss by volume) may be used. The soil mainly composed of peat moss has an effect of solidifying itself by being stuffed into a nursery, and has the advantage that the above-mentioned solidifying agent is unnecessary in some cases because the root pot is strengthened.
[0005]
However, the soil mainly composed of peat moss has a small specific gravity, and when soil is put in by a conventional sowing machine, there is a problem that a bridge is easily caused at the entrance of the seedling room, particularly when a seedling box having a small opening area is used. Therefore, there is a difference in the amount of soil between each seedling room, there is a difference in the growth of seedlings due to the small amount of soil in each seedling room, etc. There was a problem that occurred.
The present invention has been made in view of the above problems, and even when using soil with low specific gravity, it is possible to secure a necessary amount of soil in each nursery room and to reduce the amount difference between each nursery room The purpose is to obtain an earthing device for a seeding machine.
[0006]
[Means for Solving the Problems]
The present invention provides a seedling box seeding machine that continuously performs soiling, sowing and covering soil on a seedling box while conveying the seedling box arranged in a number of seedling rooms in one direction. A scraper is arranged along the conveying direction, a scraper is disposed below each earthing device, and a pressure-reducing roller having a pressure-reducing protrusion corresponding to each nursery room is disposed in front thereof. In this seedling box seeder, it is desirable to install a seedling box vibration device that applies vibration to the seedling box that is being transported during soiling (especially during the first soiling).
As the seedling box vibration device, for example, an eccentric shaft roller that is rotatably installed at a position below the nursery box to be conveyed, and the eccentric shaft roller that is installed between the eccentric shaft roller and the seedling box is rotated. And a vibrating plate that vibrates up and down, and the vibrating plate vibrates the seedling box during soiling.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the seedling box seeder according to the present invention will be described more specifically with reference to FIGS.
The seedling box seeder shown in FIG. 1 has a seedling box feeding device 2, a first soiling device 3, a second soiling device 4, a seeding device 5, and a soil covering device 6 on the gantry 1 in the conveying direction of the seedling box A ( They are installed in order along the arrow a). Also, a scraper 7 below the first earthing device 3, a pressure reducing roller 8 in front of it, a scraper 9 below the second earthing device 4, a pressure reducing roller 11 in front of it, and a seed presser roller 12 in front of the seeding device 5. The scraper 13 is installed below the soil covering device 6 and has a claw 14a that engages with a feed hole 18 (see FIG. 3) formed on both edges of the seedling box A guided on the rails 16 and 17. Gears 14 are installed at appropriate intervals. 19 is a feed roller of the seedling box A, and 20 is a feed conveyor. Among the above devices, the sowing device 5, the pressure-reducing rollers 8 and 11, and the seed presser roller 12 are driven to rotate as the seedling box A is conveyed, and the other devices (movable parts) are motor-driven. In addition, each apparatus described above is a known one (except that two earthing apparatuses are installed).
[0008]
In addition, a seedling box vibration device 15 that vibrates the seedling box A at the time of soiling is installed in the seedling box seeder. As shown in FIGS. 2 and 3, the seedling box vibration device 15 includes an eccentric shaft roller 15 a that is rotatably installed with its axis centering perpendicular to the conveying direction “a” of the seedling box A, and the eccentric shaft roller. The diaphragm 15b installed between 15a and the nursery box A conveyed is provided. The vibration plate 15b is supported at a position in sliding contact with the bottom surface of the seedling box A conveyed by the support portions 15c and 15d, and is caused to vibrate up and down as the eccentric shaft roller 15a rotates (the maximum amplitude S is the magnitude of the eccentricity of the eccentric shaft). The vibration is transmitted to the nursery box A.
[0009]
In the seedling box seeder, the seedling box feeding device 2 feeds the seedling boxes A one by one from the seedling box located at the bottom of the seedling boxes loaded in the case 2a, and the feed gear 14 sends the seedling box A to the first seedling box A. It conveys continuously toward the earthing apparatus 3. In the first soil putting device 3, the culture soil is supplied from the belt conveyor 3 a to the seedling box A that is being continuously conveyed, and soiling is performed. At that time, the seedling box A is subjected to vertical vibration by the seedling box vibration device 15. . For this reason, even if the soil has a small specific gravity (for example, a soil mainly composed of peat moss), it does not cause bridging at the entrance of the nursery room, and the amount of soil in each nursery room increases. There will be no difference in the amount of soil. It is desirable that the vibration to the seedling box A is mainly performed at the supply position of the culture soil or immediately after the supply, and is performed in front of these devices so as not to affect the next process such as the cutting operation of the scraper 7. It is desirable that
[0010]
The seedling box A is subjected to cutting by the scraper 7 after putting in the soil, and the soil in each seedling room is further pressed and packed by the projections 8a of the pressing rollers 8. Subsequently, earthing by the second earthing device 4 is performed on the seedling box A to be conveyed. By carrying out soiling twice in this manner, a necessary amount of soil is secured in each seedling chamber, and the amount of soil between each seedling chamber is substantially uniform. In addition, change the ingredients of the soil of the second soiling device and the first soiling device (for example, the first soil is a component that does not easily collapse the root pot and the second soil in the vicinity of the seed is a component suitable for germination). You can also.
[0011]
After the earthing by the second earthing device 4, cutting by the scraper 9 and pressure reduction by the pressure reduction roller 11 are performed, and then seeding by the seeding device 5 is performed. Positioning gears having claws 5b that engage with feed holes 17 formed on both sides of the seedling box A are attached to the left and right of the sowing wheel 5a of the seeding device 5, and the feed holes 17 of the seedling box A that are continuously conveyed. The seeding wheel 5a is rotated at the same time. The seedling box A that has come out of the seeding device 5 is subjected to pressure suppression by the seed presser roller 12, and finally supplied with the soil by the soil covering device 6, so that each seedling room is covered with soil.
[0012]
In the above example, no vibration was applied at the time of the second earthing, but this is because the seedlings are stuffed into each seedling room by the first earthing and crushing, and the soil is shallow, so in the second earthing This is because the bridge is difficult to occur. However, when the opening area of the entrance of the seedling room is small and the bottom is deep, or when using a culture soil that easily causes bridging, vibration may be applied as appropriate during the second and subsequent soiling. In such a case, it is desirable to make adjustments such as reducing the amplitude so that the cultivated soil packed up to that point does not jump out.
In the above example, the vibration is applied at the time of the first earthing. However, there is a great effect even if the earthing and the subsequent pressure reduction are performed several times without adding the vibration. In other words, after the first earthing, crushing and filling the seedling into the seedling room, if the second earthing is further performed, even if a bridge is formed in the first earthing, the second time It is eliminated by the earthing, and the second earthing is performed there. At this time, as described above, the second earthing is unlikely to cause a bridge. Therefore, as compared with a conventional seedling box seeding machine, it is possible to ensure a large amount of soil in each seedling room and reduce the amount of soil culture between seedling rooms.
[0013]
【The invention's effect】
According to the seedling box seeding machine of the present invention, a necessary amount of soil can be secured in each nursery room, and the difference in the amount of soil between seedling rooms can be reduced. Therefore, there is no difference in the growth of seedlings, and it is possible to prevent the root pot from collapsing during mechanical transplantation.
[Brief description of the drawings]
FIG. 1 is a front view schematically showing a seedling box seeder according to the present invention.
FIG. 2 is a front view schematically showing a portion of the seedling box vibration device.
FIG. 3 is a side view of the same.
[Explanation of symbols]
3, 4 Soil putting device 5 Seeding device 6 Soil covering device 8, 11 Pressure reducing roller 12 Seed holding roller 15 Seedling box vibration device 15a Eccentric shaft 15b Diaphragm

Claims (4)

In a seedling box seeding machine that performs soiling, sowing and covering soil continuously to a seedling box while transporting the seedling box arranged in a number of seedling rooms in one direction, a plurality of soiling devices are arranged along the transporting direction. A seedling box seeding machine characterized in that a scraper is arranged below each earthing device, and a pressure-reducing roller having a pressure-reducing protrusion corresponding to each seedling room is arranged in front of the scraper .   The seedling box seeding machine according to claim 1, further comprising a seedling box vibration device that applies vibration to the seedling box that is being transported during soiling.   The seedling box seeding machine according to claim 1, further comprising a seedling box vibration device that applies vibration to the seedling box that is being transported at the time of first soiling. The seedling box vibration device includes an eccentric shaft roller that is rotatably installed at a position below the nursery box to be conveyed, and is installed between the eccentric shaft roller and the seedling box so as to move up and down as the eccentric shaft roller rotates. The seedling box seeder according to claim 2 or 3, further comprising a vibrating plate.

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