JPH0779571B2 - 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]

Examples of the automatic seeding plant as described above include, for example, JP-A-63
As disclosed in Japanese Patent Publication No. 71025-, while sending seedling seedlings and nursery boxes that have been treated with covering soil to a predetermined position in the elevator type vertical transfer device by a transfer conveyor,
There is a configuration in which the seedling raising boxes that have been sent are sequentially lifted upward by the vertical transport device, and the seedling raising boxes are transferred from the upper end of the vertical transport device to another germination table and stacked.

[Problems to be Solved by the Invention]

In the case of improving the processing capacity in the automatic seeding plant as described above, if the efficiency of seeding and covering the seedling raising box and raising the feeding speed of the conveyer conveyor are increased, the raising and lowering feeders for raising seedling raising boxes will be accompanied. It has to be quickly fed to the predetermined position inside.

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 at high speed into the vertical conveyor is installed inside the vertical conveyor by a stopper. In such a situation, the vehicle suddenly stops at the predetermined position. In this situation, the seeds and cover soil that are evenly sown in the nursery box will move to one side when suddenly stopped,
You will not be able to make a good mat seedling.

Here, the present invention has been made by paying attention to the above problems, in the case of increasing the feeding speed of the nursery box,
The purpose is to prevent the seeds and soil in the nursery box from moving at a predetermined position in the vertical transport device.

[Means for Solving the Problems]

The features of the present invention, in the automatic seeding plant as described above, in the transport path between the seeding device and the vertical transport device, a stacking device for directly stacking the nursery boxes on this transport path in a plurality of stages, The stacked seedling raising boxes are configured to be fed into the upper and lower conveying devices, and the operation and effect are as follows.

[Action]

For example, as shown in FIG. 1 and FIG. 2, if the seedling raising boxes (1) on the conveying path are stacked in two stages by the stacking device (12), the space between the seedling raising boxes (1) after stacking ( L ₁ ) is sufficiently wider than the distance before stacking (L ₂ ).

As a result, even if the feeding speed of the nursery box (1) is increased, after feeding the multiple-stage nursery box (1) into the vertical transport device (10), the next multiple-stage nursery box (1) is vertically transported. Equipment (10)
You will have some time to get to the position just before. Therefore, it is possible to feed the nursery boxes (1) having a plurality of stages into the vertical transport device (10) at a relatively slow speed (a speed at which the soil does not move).

Further, even 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. Therefore, the transfer device (16) can also be used at a low speed such that the soil does not move, and with a relatively large margin, the nursery box (1)
Can be transferred to the germination stand (17) and stacked.
Further, since the transfer device (16) receives the seedling raising boxes (1) already stacked in a plurality of stages, it is possible to move the seedling raising boxes (1) in a plurality of stages to the germination table (17) at a time. You can do it.

〔The invention's effect〕

As described above, at the time of feeding the seedling raising box into the upper and lower carrier, and at the time of reloading the seedling raising box from the upper or lower end of the upper and lower carrier, the soil and seeds may move in the nursery box. It is possible to increase the feeding speed of the whole nursery box while suppressing it, and it is now possible to transfer multiple nursery boxes to the germination table from the upper or lower end of the vertical transport device at one time, improving the processing capacity of the entire automatic seeding print. I was able to improve.

Further, as a similar effect can be expected, it is conceivable to use a means for branching the conveying path from the middle to two stages, upper and lower, or left and right. However, such means requires a great change in the conveying path and a space. On the other hand, such a need is not particularly necessary in the present invention.

〔Example〕

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

As shown in FIG. 4, the feed conveyor (2) for feeding the empty seedling raising boxes (1) and the seedling raising box (1) from the feed conveyor (2) are lowered to the working level in a suspended state. A seedling raising box supply system is configured by the elevators (3) to be driven and the seedling raising box supply devices (4) that take out the stacked seedling raising boxes (1) one by one and send them to the conveyor (5). Then, a bed soil supplying section (6) for supplying bed soil to the seedling raising box (1) sent by the transfer conveyor (5), a watering section (7) for spraying water on the bed soil, and seeds on the bed soil. The seeding device (11) is composed of a sowing section (8) for sowing, a soil covering section (9) for covering the seedling raising box (1) with soil, and the like. Further, the soil is supplied to the floor soil supplying section (6) and the soil covering section (9) through the lifting conveyor (19), the intermediate conveyor (20) and the forward / reverse conveyor (21).

The seeded nursery box (1) sent by the transfer conveyor (5) is sent to the vertical transfer device (10) from the transfer conveyor (5). Next, this nursery box (1)
A detailed description will be given of the structure for feeding the upper and lower transfer devices (10) to the vertical transfer device (10), as shown in FIGS. The stacking device (12) is configured by arranging the attached (12b) on the left and right parts of the transfer conveyor (5).

Then, a counter (13) for counting the number of seedling raising boxes (1) is arranged on the side better than the stacking device (12), and when this counter (13) detects an even number of seedling raising boxes (1a). The odd numbered seedling raising box (1b) located in front of this seedling raising box (1a) is lifted by the stacking device (12) and stacked on the subsequent seedling raising box (1a). Further, a contact-type first sensor (14) for detecting whether or not the stacked nursery boxes (1) are correctly stacked on the lower side of the stacking device (12) (the upper nursery box (1
b) for detection) and second sensor (22) (lower seedling box (1
(for detection of a)) are arranged slightly offset in the transport direction of the nursery box (1).

As shown in FIG. 1, a pair of arms (15a) are fixed to an endless rotation band (not shown) such as a chain on the transfer roller (23) connected to the end of the transfer conveyor (5). The feeding mechanism (15) is provided, and the feeding speed of the feeding mechanism (15) is set to be lower than that of the transport conveyor (5). And this feeding mechanism (1
By 5), the seedling raising boxes (1) stacked in two layers above and below are sent into the vertical transport device (10).

Next, the vertical transfer device (10) will be described in detail.
As shown in Fig. 3 and Fig. 3, a pair of upper and lower sprockets (10
A large number of support pieces (10a) are attached to the endless rotation band (10c) such as a chain wound around b), and the endless rotation band (10c) is arranged on the left and right of the transport roller (23). It has been done. As a result, the fed nursery box (1) is stopped by the stopper (10d) in the vertical transport device (10), is supported by the support piece (10a), and is fed upward. The feed stroke to the seedlings 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). The transfer device (16) has a structure in which three sets of arms (16a) are fixed to an endless rotation band (not shown) such as a chain. The germination cart (17) is placed on the elevator (18), and the elevator (18) descends each time the seedling raising box (1) is stacked on the germination cart (17).

As described above, the seedling raising box (1) with a predetermined number of stages is used for the emergence cart (1
When it is piled up in 7), this germination cart (17) is carried to the germination chamber (not shown).

The up-and-down conveying device (10) may have a fork-shaped support arm attached to a pair of endless chains, and the seedling raising box (1) may be placed on this support arm. It may be configured to be sent to.

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 showing the structure of a conveyor, a stacking device, and a vertical conveying device, FIG. 2 is a plan view of the conveyor, a stacking device, and FIG. 3 is a schematic front view of the vertical conveying device.
FIG. 4 is a schematic side view of the entire automatic seeding plant. (1), (1a), (1b) …… Raising seedling box, (10) …… Upper and lower transfer device, (11) …… Seeding device, (12) …… Stacking device, (16) …… Transfer device, (17) …… Sprouting stand.

Claims (1)

[Claims] 1. A seeding device (11) for dropping soil and seeds into a raised seedling raising box (1), and this seeding device (11).
Vertical transfer device (10) that supports the seedling raising box (1) sent from the above in a plurality of vertical stages and sends it upward or downward
And a transfer device (16) for stacking the seedling raising box (1) at the upper or lower end of the upper and lower transfer device (10) on a germination table (17), which is the seeding device ( A stacking device (12) for directly stacking the seedling raising boxes (1a), (1b) on the transfer path in a plurality of stages is provided in the transfer path between the upper and lower transfer devices (10). An automatic seeding plant configured to feed a plurality of stacked seedling raising boxes (1a), (1b) into the vertical transfer device (10).