JPH02104206A - Automatically seeding plant - Google Patents

Abstract

PURPOSE:To prevent seeds and covering soil in seedling raising boxes from moving at a given position in a vertical conveyor by equipping transporting mechanism to send a seedling raising box from each branched transportation path to the vertical conveyor. CONSTITUTION:When one seedling raising box 1a among seedling raising boxes 1 sent from a conveyor 5 is sent to a first branched conveyor 12 in a raised state of an auxiliary conveyor 14, the auxiliary conveyor 14 is dropped and the next seedling raising box 1b is fed through the auxiliary conveyor 14 to a second branched conveyor 13. The transportation speed of the auxiliary conveyor 14 and the second branched conveyor 13 is set higher than that of the first branched conveyor 12. At a position just before a vertical conveyor 10, the seedling raising box 1a at the side of the conveyor 12 and the seedling raising box 1b at the side of the conveyor 13 are vertically arranged. The conveyor 13 is equipped with transporting mechanism 15 and the speed of the transporting mechanism is equal to the transportation speed of the conveyor 12. Consequently, the seedling raising boxes 1a and 1b vertically arranged are sent together to the vertical conveyor 10 by the transporting mechanism 15 and the conveyor 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic seeding plant that produces a large amount of mat-like seedlings, which is used in the planting operation using a rice transplanter.

[Conventional technology]

An example of an automatic seeding plant as mentioned above is the Japanese Patent Application Publication No. 6
As disclosed in Publication No. 3-71025, the seedling raising boxes that have been sown with seeds and covered with soil are sent to a predetermined position in an elevator-type vertical conveyor by a conveyor, and the seedling raising boxes that have been sent are There is a structure in which a vertical conveyance device sequentially lifts the seedling boxes upward, and the seedling growing boxes are transferred from the upper end of the vertical conveyance device to another sprouting platform and stacked.

[Problem to be solved by the invention]

When trying to improve the processing capacity of an automatic seeding plant as described above, if you increase the efficiency of sowing seedlings into seedling boxes and covering them with soil and increase the feed speed of the conveyor, it will be necessary to move the seedling boxes to the upper and lower conveyors. It is necessary to quickly feed it to the predetermined position in the interior.

Therefore, regardless of whether the seedling box is sent to a predetermined position by the feeding action of the general conveyor or by another mechanism such as a pusher, the seedling box that has been fed into the vertical conveyance device at high speed is moved up and down by a stopper or the like. This results in a situation where the transport device suddenly stops at a predetermined position within the transport device. In this situation, the seeds and soil that are uniformly sown in the seedling box will move and shift to one side during the sudden stop, making it impossible to produce good mat-like seedlings.

Here, the present invention has been made with attention to the above-mentioned problem, and when the feed speed of the conveyor is increased, the seeds and covering soil in the seedling box move at a predetermined position in the vertical conveyor. The purpose is to prevent this from happening.

[Means to solve the problem]

The feature of the present invention is that in the above-mentioned automatic seeding plant, (1) a plurality of upper and lower branching conveyance paths are provided on the terminal side of one general conveyor, and the incoming seedling growing boxes are placed at the branching section of the conveyor; Distribute lines to branch conveyance paths (a sorting device is provided, and the feed speed of some sets of the branch conveyance paths is set higher than the feed speed of other branch conveyance paths, and from each branch conveyance path The system is equipped with a feeding mechanism that feeds seedling boxes into the upper and lower transport devices, and in addition to the configuration described in the previous section, the seedling boxes distributed to the branch transport paths are placed at the same position at the end of each branch transport path. The feeding speed of each branching conveyance path is set so that the seedlings grow at the end of the branching conveyance path, and the feeding mechanism simultaneously feeds the seedling boxes into the upper and lower conveying devices, or, ■ In addition to the configuration of the previous item ■ or ■, the vertical conveyance device is configured so that the seedling raising boxes fed by the feeding mechanism from the end of each branch conveyance path are stacked directly in the vertical conveyance device and sent upward. The functions and effects are as follows.

[For production]

In the case of the configuration as described in the previous section (■), if two sets of upper and lower branched conveyance paths are provided and the feed speed of the upper branched conveyance path is set to a high speed, the lower branched conveyance path (12 )
After the seedling box (1a) is sent to the next seedling box (1b)
are sent to the upper branch conveyance path (13) and placed in the lower seedling box (
We will catch up with 1a). Therefore, this seedling raising box (1b)
The interval (1, l) between the rear seedling raising box (IC) and the rear seedling raising box (IC) is wider than the interval (L, ) between the seedling raising boxes (1) on the conveyor (5).

As a result, even if the feed speed of the conveyor (5) is increased, a certain amount of time can be secured until the next seedling growing box (IC) comes to the position just in front of the vertical conveyor (10).

Therefore, the feeding mechanism (
15), the soil can be fed into the vertical conveyance device (10) at a relatively slow speed (a speed that does not move the soil).

In addition, the vertical conveyance device (10) also stops for a relatively long time after sending the sent seedling growing boxes (la) and (lb) upward or downward until the next seedling growing box is sent in. transfer device (1
6) also at a slow speed that does not move the soil, with a relative margin.
The seedling boxes can be moved to the budding platform (17) and stacked on top of each other.

When configured as in the previous item (■), a branch conveyance path (12) is formed.

When (13) is in two stages, upper and lower, the interval (Ll) until the next seedling box (IC) arrives is equal to the interval (L3) on the conveyor (5), as shown in Figure 2. It is,
When three sets of branch conveyance paths are provided, as shown in FIGS. 1 and 2, the interval (Lυ) becomes equal to the interval (X,), and the time margin can be further increased.

If configured as in the previous item (■), seedling boxes stacked in multiple rows will be supported in the vertical transport device, so when transferring the seedling boxes from the top or bottom end of the vertical transport device to the germination table, the stacking This makes it possible to transfer multiple seedling boxes at once.

〔Effect of the invention〕

As mentioned above, when the seedling growing box is sent from the conveyor into the vertical conveyor, and when the seedling growing box is transferred from the top or bottom of the vertical conveying device to the germination platform, the soil and seeds may move inside the seedling box. This makes it possible to increase the feed speed of the conveyor while suppressing the amount of damage caused, and it is possible to improve the throughput of the entire automatic seeding plant.

In addition, a plurality of seedling growing boxes can be transferred to the budding platform at once from the upper end or lower end of the vertical conveyance device, and work efficiency can be improved compared to a configuration in which seedling growing boxes are transferred one by one.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Figure 4, empty seedling boxes (
1), a feed conveyor (2) that sends the seedlings (1), an elevator (3) that lowers the seedling boxes (1) suspended from the feed conveyor (2) to the working level, and the stacked seedling boxes (1). A seedling box supply system includes a seedling box feeding device (4) that takes out the seedlings one by one and sends them out to a conveyor (5). And the conveyor (5)
An above-the-floor supply section (6) that supplies the above-mentioned seedlings to the seedling raising box (1) sent by the plant, an irrigation section (7) that sprinkles water on the floor, a sowing section (8) that sows the seeds on the floor, and a post-sowing section. A seeding device (11) includes a soil covering section (9) that covers the seedling raising box (1) with soil. In addition, a lifting conveyor (19) and an intermediate conveyor (20
), soil is supplied via a forward/reverse conveyor (21).

The seedling raising boxes (1) of the seeding section sent by the transport conveyor (5) are sent from this transport conveyor (5) to the vertical transport device (10). Next, this seedling box (
To explain in detail the structure of feeding to the vertical conveyor (10) in 1), as shown in Figures 1 and 2, at the end of the conveyor (5) there is a lower first branch conveyor path (12). A second branch conveyor as a second branch conveyance path (13) is disposed above the first branch conveyor as a second branch conveyor, and a horizontal axis (P
l) An auxiliary conveyor as a sorting device (14) that is driven up and down is installed around it.

With the above structure, one (1a) of the seedling growing boxes (1) sent from the transport conveyor (5) is transferred to the auxiliary conveyor (14).
When it is sent to the first branch conveyor (12) in a rising state,
The auxiliary conveyor (14) descends and the next seedling growing box (1b) is transferred to the second branch conveyor (13) via the auxiliary conveyor (14).
). In other words, the auxiliary conveyor (1
4), the seedling growing boxes (1) sent from the transport conveyor (5) are alternately distributed to the first branch conveyor (12) and the second branch conveyor (13).

The conveyance speeds of the auxiliary conveyor (14) and the second branch conveyor (13) are set higher than the conveyance speed of the first branch conveyor (12), and as shown in FIG.
The next seedling growing box (lb) after the seedling growing box (1a) sent to the branching conveyor (12) side (the one sent to the second branching conveyor (13) side) is the seedling growing box on the first branching conveyor (12) side. (1a), the vertical conveyance device (1a) will be described later.
0), the seedling growing box (la) on the first branch conveyor (12) side and the seedling growing box (1b) on the second branching conveyor (13) side are lined up vertically.

As shown in FIG. 1, for the second branch conveyor (13), a feeding mechanism (15 ) is provided, and this feeding mechanism (15)
The feed speed is set to be the same as the conveyance speed of the first branch conveyor (12). As a result, as shown in Fig. 2, the seedling boxes (la) and (lb) arranged vertically are fed together into the vertical conveyance device (10) by the feeding mechanism (15) and the first branch conveyor (12). I'm going.

Next, the vertical conveyance device (10) will be described in detail. As shown in FIGS. 3 and 1, a pair of upper and lower sprockets (
10b) Endless rotating belt (I
A large number of support pieces (10a) are attached to the OC), and this endless rotating belt (10c) is connected to the first branch conveyor (
12). This results in
As mentioned above, two sets of seedling boxes (l) were sent in at the same time.
a) and (lb) are stopped by a pair of stoppers (10d) in the vertical conveyance device (10), supported by a support piece (10a), and sent upward, and the upward feeding stroke at this time is This corresponds to two parts of the seedling raising box (1).

At the upper end of the vertical conveyance device (10), as shown in FIGS. 3 and 1, when the support piece (10a) escapes from side to side and comes off the seedling growing box (1), the seedling growing box (1) falls. and place it on top of the seedling box (1) below.

In this way, when the two sets of seedling boxes (1) are stacked on top of each other at the upper end of the vertical conveyance device (10),
These two sets of seedling growing boxes (1) are transferred to a budding cart (17) by a transfer device (16). This transfer device ff1 (16) is an endless rotating belt such as a chain (
It has a structure in which three sets of arms (16a) are fixed to (not shown). In addition, the budding trolley (17) is connected to the elevator (18).
), and the seedling box (1) is placed on the budding cart (17).
) The elevator (18) descends each time the piles are stacked.

As described above, a predetermined number of rows of seedling boxes (1) are placed on the budding cart (1).
7), this budding cart (17) is transported to a budding chamber (not shown).

Example C] As shown in FIG. 5, the first and second branch conveyors (12
), (13), the vertical conveyance device (10)
The vertical spacing between the support pieces (10a) is set to twice that of the vertical conveyance device (10) in FIG. Then, the seedling growing box (1b) on the second branch conveyor (13) side is not immediately sent into the vertical conveyor (10), but is stopped at the position shown in Fig. 5, and the seedling growing box (1b) on the side of the first branch conveyor (12) is stopped. When the box (1a) is fed into the vertical transport device (10) and lifted to the position of the second branch conveyor (13) by the vertical transport device [(10), the box (1a) is moved to the second branch conveyor (13) by the feeding mechanism (15). The seedling growing box (1b) on the conveyor (13) side may be sent into the vertical conveyance device (10) and stacked on top of the previous seedling growing box (1a).

In addition, the first and second branch conveyors (12) and (13) are provided, so that the vertical distance between the support pieces (10a) of the vertical conveying device (10) is twice that of the vertical conveying device 10) in Fig. 1. In this case, as shown in Fig. 6, the feeding mechanism (15) moves the seedling box (1a) fed by the first branch conveyor (12) and supported by the support piece (10a). The seedling growing box (lb) sent from the second branch conveyor (13) may fall within the vertical conveyance device (10) and be stacked on top of the previous seedling growing box (1a).

In addition, in the above-mentioned embodiment, a dedicated feeding mechanism (15) for feeding the seedling box (1) into the vertical conveyance device (lO) is provided, but the first and second branch conveyors are not provided with such a mechanism. The seedling box (
1) may be fed into the vertical conveyance device (10).

The vertical transfer device (<10) has a fork-shaped support arm attached to a set of endless chains, and a seedling box (
1) may be placed on top of the seedling box (1).
It is also possible to have a structure that sends downward.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawing shows an embodiment of an automatic seeding plant according to the invention,
Figure 1 is a side view showing the structure of the conveyor, the vertical conveyor, and the first and second branch conveyors, and Figure 2 is a side view of the structure of the conveyor, the vertical conveyor, and the first and second branch conveyors. A side view showing the state, Fig. 3 is a schematic front view of the vertical conveyance device, Fig. 4 is a schematic side view of the entire automatic seeding plant,
FIG. 5 is a side view of the vicinity of the vertical conveyance device in the first alternative embodiment, and FIG. 6 is a side view of the vicinity of the vertical conveyance device in the second alternate embodiment. (1)...Seedling raising box, (5)...Transportation conveyor. (10)...Vertical conveyance device, (11)...
... Seeding device, (12), (13) ... Branch conveyance path, (14) ... Sorting device, (15)
...Feeding mechanism, (16) ...Transfer device, (17) ...Sprouting platform.

Claims (1)

[Claims] 1. Seedling raising box (1) transported by a transport conveyor (5)
A sowing device (11) that drops soil and seeds to the soil and a seedling box (1) sent out from this sowing device (11) by a conveyor (5) are supported in multiple stages in the vertical direction and A vertical conveyance device (10) that sends downwards, and a seedling raising box (1) at the upper or lower end of this vertical conveyance device (10) is placed on a budding platform (
17) and a transfer device (16) for stacking on the conveyor (5).
There are multiple upper and lower branch conveyor paths (12) and (13) on the terminal side of the
is provided, and the sent seedling raising boxes (1) are placed at the branching part of this conveyor (5), and the seedling raising boxes (1) are transferred to each branch conveyor path (12), (13).
) is provided, and the feed rate of some sets of the branch conveyance paths (12), (13) is adjusted to the feed rate of other branch conveyance paths (12), (13). each branch conveyance path (12),
(13) from the seedling box (1) to the above-mentioned upper and lower transport device (10)
Automatic seeding plant equipped with a feeding mechanism (15) for feeding into the seeding plant. 2. Each seedling raising box (1) distributed to the branch transport path (12), (13) is connected to each branch transport path (12), (13).
Each branch conveyance path (12
), (13), and simultaneously transport the seedling boxes (1) that have come to the end of the branched transport paths (12), (13) by the feeding mechanism (15) to the upper and lower transport device (10).
2. The automatic seeding plant according to claim 1, wherein the automatic seeding plant is adapted to be fed into a plant. 3. The seedling raising box (1) is fed by the feed mechanism (15) from the end of each of the branch conveyance paths (12) and (13).
3. The automatic seeding plant according to claim 1 or 2, wherein the vertical conveyance device (10) is constructed so that the seeds (1) are stacked directly in the vertical conveyance device (10) and sent upward.