JPH0648942B2 - Automatic seeding plant - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic seeding plant for producing a large amount of mat-like seedlings used in planting work in a rice transplanter.

[Conventional technology]

As an automatic seeding plant as described above, for example, JP-A-63
As disclosed in JP-71025-A, a nursery box that has been sowed and covered with soil is sent to a predetermined position in an elevator type vertical transport device by a transport conveyor, and the fed nursery box is vertically transported. There is a configuration in which the apparatus sequentially sends the particles upward or downward, and transfers the seedling raising boxes from another upper or lower end of the vertical conveying apparatus to another germination table and stacks them.

[Problems to be Solved by the Invention]

When trying to improve the processing capacity in the automatic seeding plant as described above, if the efficiency of seeding and covering the nursery box is increased and the feed speed of the conveyor is increased,
Along with this, the nursery box must be quickly sent to the predetermined position in the vertical transport device.

Therefore, whether the nursery box is sent to a predetermined position by the feeding action of the conveyor, or whether it is sent by another mechanism such as a pusher, the nursery box that has been sent into the vertical transport device at high speed is moved by the stopper or the like. A sudden stop will occur at a predetermined position inside. In such a state, the seeds and cover soil that are evenly sown in the nursery box move to one side at the time of sudden stop, and the mat-like seedlings cannot be formed.

Here, the present invention has been made by paying attention to the problems as described above, and when the feeding speed of the conveyor is increased, the seeds and the soil cover in the nursery box do not move at a predetermined position in the vertical conveyor. The purpose is to do so.

[Means for Solving the Problems]

The features of the present invention, in the automatic seeding plant as described above, in the conveyor path between the seeding device and the vertical transport device, another seedling on the transport conveyor while sending the nursery box on the transport conveyor to the transport lower side. A stacking device for stacking the seedlings in a box is provided, and a feeding device for sending the stacked seedling-growing boxes into the upper and lower transporting devices is provided. The operation and effect are as follows.

[Work]

For example, as shown in FIG. 1 and FIG.
(2) Lift one of the upper nursery boxes (1) and send it to the lower side (right side of the paper) for transportation, and this nursery box (1) is a different nursery box (1).
Stacked on. When the seedling raising boxes are stacked in a plurality of stages in this manner, the spacing (L ₁ ) between the stacked seedling raising boxes is sufficiently wider than the spacing (L ₂ ) before the stacking.

As a result, even if the feed speed of the conveyor (2) is increased,
After feeding the multi-stage nursery boxes (1) into the vertical transport device (10) by the feeding device (15), the next multi-stage nursery boxes (1)
It will be possible to secure a certain amount of time until the robot reaches the position of the feeding device (15). Therefore, a multi-stage nursery box (1)
By means of the feeding device (15), it can be fed into the vertical conveying device (10) at a relatively slow speed (a speed at which the soil does not move).

Also, in the vertical transport device (10), after the fed nursery box (1) is sent upward or downward, it is stopped for a relatively long time until the next nursery box (1) is fed. As a result, the transfer device (16) can also be installed in the seedling raising box (1) at a low speed such that the soil does not move and with a relatively large margin.
Can be moved to and stacked. Also, since the transfer device (16) is sent with the seedling raising boxes (1) already stacked in multiple stages, it is possible to move these multiple stages of seedling raising boxes (1) to the germination table (17) at a time. You can do it.

Then, in the transport conveyor, the front side (lower side of transportation) is raised and the rear side (upper side of transportation) is fed and stacked on the rear side of the rearing side, or the seedling raising box is lifted up and the next seedling raising side is raised. With respect to a configuration in which the upper seedling raising box is lowered and stacked when the box comes down, the seedling raising box that is sent to the lower side while being lifted is the configuration of the present invention, and the lower seedling raising box on which this is stacked. Since the relative speed difference is smaller than the feed speed of the conveyor, the nursery boxes can be stacked relatively accurately and easily.

〔The invention's effect〕

As described above, soil and seeds move in the nursery box when the nursery box is fed from the conveyor to the upper and lower conveyors and when the upper or lower end of the upper and lower conveyors is transposed to the germination table. While it is possible to increase the feeding speed of the conveyor while suppressing the occurrence of such, it is possible to transfer multiple seedling raising boxes from the upper or lower end of the upper and lower conveyors to the germination table at one time. It was possible to improve the processing capacity.

Further, as a means that the same effect can be expected, it is conceivable to use a means for branching the transport conveyor from the middle to upper and lower two stages or to the left and right, but such means requires a large change or space in the transport conveyor. In the present invention, such a need is not necessary.

Further, it becomes possible to stack the seedling raising boxes while suppressing the positional deviation, and it becomes easy to perform post-treatments such as feeding into the upper and lower conveying devices and transferring to the germination table.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in Fig. 5, empty nursery boxes in a stacked state
(1) are sent out from the bottom one by one to the conveyor (2). Then, the nursery box (1) sent by the conveyor (2)
To the bed soil supply section (3) for supplying bed soil to the soil, the watering section (4) for spraying water on the bed soil, the seeding section (5) for sowing seeds on the bed soil, and the nursery box (1) after sowing. The seeding device (7) is composed of the soil cover portion (6) and the like for covering the soil.

The transfer conveyor (2) is formed by bending it into a U shape in plan view, and the floor soil supply section (3) and the soil cover section are
(6) and are arranged side by side. As a result, a soil supply conveyor (9) was installed from the soil storage tank (8) to the floor soil supply section (3) and the soil cover section (6), and the storage tank (8) to the floor soil supply section (3). ) And soil cover (6).

The seeded nursery box (1) sent by the transfer conveyor (2) is transferred from the transfer conveyor (2) to the vertical transfer device (10).
Sent to. Next, the detailed structure of feeding the seedling raising box (1) to the vertical transport device (10) will be described in detail with reference to FIGS.
The support part (11b) of the nursery box (1) is erected in 1a) and this support part
(11b) can be driven in and out so that it can move in and out under the nursery box (1). The first stacking device (1
1) is configured. Then, this first stacking device (1
A second stacking device (12) including an arm (12a) and a supporting portion (12b) similar to that of 1) is provided.

With the above structure, the first and second stacking devices (11), (1
2) When the nearby counter (19) detects an even number of nursery boxes (1a), the arms (11a) of the first stack (11) with the support (11b) protruding as shown in FIG. Rotates clockwise on the page. As a result, the left and right supporting portions (11b) are brought into contact with the lower surface of the even-numbered nursery box (1a), and the nursery box (1a) is the first
The first stacking device lifted by the stacking device (11)
(11) stops above.

Then, the next nursery box (1b) is a sensor (20) for detecting the nursery box.
When reaching the position, the first stacking device (11) stopped as shown in FIGS. 2 and 3 rotates clockwise in the plane of the drawing, and the seedlings supported by the first stacking device (11). Box (1a)
Are stacked in the nursery box (1b) on the conveyor (2). In this case, the next nursery box (1c) comes to the position of the counter (19), but at this time, the second stacking device (12) rotates clockwise in the plane of the paper and the second stacking device (12) rotates the nursery box (1).
c) is lifted up and stopped and supported above. Then, when the next nursery box (1d) comes to the position of the sensor (20), the second stacking device (12) rotates clockwise on the paper surface, and the nursery box
(1c) is stacked on the nursery box (1d), and the next nursery box (1
e) is lifted by the first stacking device (11). Therefore, when the above-described operation is repeated by the first and second stacking devices (11) and (12), the interval (L ₂ ) between the seedling-raising boxes (1) before the stacking and the seedling-raising box (1) after the stacking ), The interval (L ₁ ) becomes sufficiently wide.

Conveyor rollers (1) leading to the end of the conveyor (2)
As shown in FIG. 1, 3) is provided with a feeding device (15) in which a pair of arms (15a) are fixed to an endless rotating body (not shown) such as a chain.
The feeding speed of (15) is set lower than that of the conveyor (2). Then, the feeding device (15) feeds the seedling-raising boxes (1) stacked in the upper and lower two stages into the upper and lower transfer device (10).

Next, the vertical transfer device (10) will be described in detail. As shown in FIGS. 1 and 6, a pair of upper and lower sprockets (10b).
A large number of support pieces (10a) are attached to an endless rotary body (10c) such as a chain wound around the endless rotary body (10c).
c) is arranged on the left and right of the transport roller (13). As a result, the fed nursery box (1) is stopped by the stopper (10d) in the vertical transport device (10), and the support piece (1)
It is supported by 0a) and fed upward, and the upward feeding stroke at that time corresponds to two seedling raising boxes (1).

Then, when the seedling raising box (1) reaches the upper end of the vertical transport device (10), the seedling raising box (1) is transferred to the germination cart (17) by the transfer device (16). This transfer device (16) has a structure in which three sets of arms (16a) are fixed to an endless rotating body (not shown) such as a chain. In addition, the budding cart (17) is placed on the elevator (18),
Every time (1) is stacked on the budding cart (17), the elevator (1
8) descends.

As described above, when the seedling raising boxes (1) having a predetermined number of stages are stacked on the germination cart (17), the germination cart (17) is carried to the germination chamber (not shown).

[Another embodiment]

Regarding the stacking device, a stacking device (14) as shown in FIGS. 7 and 8 may be used. That is,
A wide support part (14d) equipped with receiving racks (14a), (14b), and (14c) that can be slid in and out is swingably driven around the horizontal axis (P ₁ ), and the receiving racks are also supported. The stacking device (14) has a structure such that the driving rollers (14e) for feeding the nursery box (1) are provided in (14a), (14b), and (14c).

With the above structure, the even-numbered nursery box (1a) can be used as a counter.
Stacking device (14) that was facing down when detected by (19)
(In this case, only the receiving rack (14a) projects and the receiving racks (14b), (14
(c) is retreating) and the nursery box (1a) is lifted at the starting end of the receiving shelf (14a) and stopped and supported above. Then, when the next nursery box is sent by the conveyor (2), the other receiving shelves (14b), (14c) are projected and the nursery box (1a) is conveyed by the drive roller (14e) to the lower side (receiving shelf ( 14c) side). When the nursery box (1a) reaches the position of the receiving rack (14c), all the receiving racks (14a), (14b), (14c) move in and the nursery box (1
a) is stacked in the nursery box on the conveyor (2).

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

Drawing shows an embodiment of an automatic seeding plant according to the present invention,
FIG. 1 is a side view of the first and second stacking devices and the vertical conveying device, and FIG. 2 shows a state immediately before the seedling raising box that has been lifted from the state shown in FIG. 1 is stacked on the lower seedling raising box. The side view shown in FIG. 3, FIG. 3 is a side view showing the state where the next nursery box is lifted up from the state shown in FIG. 2, and FIG. 4 is the vicinity of the first and second stacking devices in the state shown in FIG. Fig. 5 is a schematic plan view of an automatic seeding plant,
FIG. 6 is a front view of the vertical transport device, FIG. 7 is a front view of a stacking device in another embodiment, and FIG. 8 is an overall perspective view of a stacking device in another embodiment. (1) …… Seedling raising box, (2) …… Conveyor, (7) …… Seeding device, (10) …… Vertical transport device, (11), (12), (14) …… Stacking device, ( 15) …… Sending device, (16) …… Transfer device, (17) …… Sprouting table.

Claims (1)

[Claims] 1. A nursery box that is transported by a transport conveyor (2)
The seeding device (7) for dropping soil and seeds into (1) and the seedling raising box (1) sent out by the conveyor (2) from this seeding device (7) are supported in a plurality of vertical stages. And a transfer device (16) for stacking the seedling raising box (1) at the upper or lower end of the vertical transfer device (10) on the germination table (17). In the automatic seeding plant, in the conveyor path between the seeding device (7) and the vertical transfer device (10), the nursery box (1) on the transfer conveyor (2)
A stacking device (11), (1) that lifts and transports the food to the lower side while stacking it on another nursery box (1) on the transport conveyor (2).
An automatic seeding plant provided with 2) and (14) and a feeding device (15) for feeding the stacked seedling raising boxes (1) into the upper and lower transfer devices (10).