JP2506248Y2 - Seeding plant - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial field of application] The present invention is a seeding plant in which soil and seeds are continuously placed in a seedling growing box for growing seedlings for planting crops. Regarding

[0002]

2. Description of the Related Art An example of the seed plant described above is disclosed in Japanese Patent Laid-Open No. 2-171120. In this seeding plant, the seedling raising box (1 in the above publication) is fed by a conveyor (12 in the aforementioned publication), and the raising and lowering transporting device (10 in the above publication) sequentially lifts the seedling raising box to transfer the seedlings to the transfer device ( According to 16) of the above publication, the seedling raising boxes are sequentially transferred from the upper end of the upper and lower transporting devices to the transport carriage (17 of the above publication) and stacked. Then, an elevator (1 of the above-mentioned publication) that supports the carrier truck in conjunction with the operation of the transfer device.
8) (corresponding to a supporting device) is configured to descend sequentially.

[0003]

In the above-mentioned configuration, when a predetermined number of seedling raising boxes are stacked on the carrier, the carrier is automatically transferred to another carrier and sent to the germination chamber, and a new carrier is transferred. A dolly is mounted on the elevator, and the elevator is configured to rise to a predetermined position. However, suppose that the carrier truck on which the nursery boxes are stacked did not move due to some trouble and stopped at the position where it was transferred from the elevator to the carrier device.
In such a state, when the seedling raising boxes are stacked on a new carrier truck on the elevator and the number of seedling raising boxes reaches a predetermined number, the carrier trucks on this elevator are moved to the carrier device and stopped. It collides with the carrier. The present invention aims to prevent the above-described phenomenon such as collision in a seeding plant.

[0004]

The feature of the present invention resides in the following configuration in the seed plant as described above. That is, the first sensor for detecting that the supporting device is operated to the position where the supporting device supports the seedling raising box to the predetermined position of the transfer device, and the presence or absence of the seedling raising box at the predetermined position of the transfer device. And a second restraint means for stopping the supporting device when the second sensor detects the presence of the nursery box after a predetermined time from the detection operation of the first sensor.

[0005]

With the above construction, when a predetermined number of seedling raising boxes are stacked on the supporting device (the elevator or the like), the supporting device is activated and the raising device of the supporting device is transferred to the transport device (transportation carriage or transport conveyor). The first sensor detects that the support device has completed the transfer of the nursery boxes while the support device has been transferred to the predetermined position. Then, the second sensor detects that the seedling raising box is present at a predetermined position of the transport device. After that, if there is no particular trouble, the nursery box on the carrier is sent to another position, and the second sensor detects that the nursery box is no longer present at a predetermined position on the carrier. However, it is assumed that the seedling raising box remains at a predetermined position of the carrier due to some trouble. In this case, even if a predetermined time has elapsed after the first sensor detected the completion of the transfer of the seedling raising box of the supporting device, the seedling raising box still remains at the predetermined position of the transport device, and the second sensor indicates It has detected that the box is still in place on the carrier.
Therefore, in such a case, since the supporting device is automatically stopped, it is possible to prevent a situation in which the next nursery box is transferred to a predetermined position of the carrier device where the nursery box still remains. .

[0006]

[Effects of the Invention] As described above, even though the seedling raising box still remains at the predetermined position of the transport device, the next seedling raising box is moved to this predetermined position, so that the seedling raising boxes collide with each other and are damaged. It was possible to prevent such a situation before it happened and to prevent the efficiency of the seeding plant from decreasing.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the second half of the seeding plant, in which the seedling raising box 2 for which the supply of the bed soil, the seeding and the covering treatment have been completed is sent from the left side of the paper by the first conveyor 1. Then, each seedling raising box 2 is sequentially lifted upward by the vertical transport device 3 from the end of the first transport conveyor 1. As shown in FIG. 3, the vertical transport device 3 has a pair of chains 3a arranged on the left and right of the end of the first transport conveyor 1, and a large number of supporting claws 3b are fixed to the chains 3a to drive the chain 3a to rotate. It is configured to do.

As shown in FIGS. 1 and 3, a transfer device 4 is arranged at the upper end of the vertical transport device 3. This transfer device 4 has a structure in which three sets of arms 4b are fixed to a rubber belt 4a that is rotationally driven, and the seedling raising box 2 that has reached the upper end of the vertical transport device 3 is pushed by the arm 4b and transferred to the holding device 5. Change.

As shown in FIGS. 1 and 2, the holding device 5 is composed of a member having an L-shaped cross section, and the left and right members can be swingably driven left and right. Therefore, when the transfer device 4 sends the nursery box 2 at the upper end of the vertical transport device 3 to the holding device 5, the holding device 5 opens to the left and right.
The upper nursery box 2 is dropped downward.

Below the holding device 5, a support device 6 for receiving the nursery box 2 is arranged. The support device 6 has a pair of left and right chains 6a that are rotationally driven in the same manner as the vertical transport device 3, and has two sets of support claws 6b and 6c fixed at two positions on each of the two chains 6a. Is configured. Further, as shown in FIG. 1, an optical counter 7 constituted by arranging a light emitting device 7a and a light receiving device 7b facing each other is provided between the upper and lower sides of the holding device 5 and the supporting device 6. As a result, when the nursery box 2 is dropped from the holding device 5 and the light from the light emitter 7a to the light receiver 7b is shut off, it is determined that the nursery box 2 has dropped and one of the support claws 6b of the support device 6 is placed in the nursery box. Only one box 2 is lowered, and thus the seedling raising boxes 2 are stacked on the supporting claws 6b of the supporting device 6 (corresponding to the first control means).

When the counter 7 detects that a predetermined number of the seedling raising boxes 2 are stacked on one of the supporting claws 6b of the supporting device 6, the supporting claws 6b are driven downward to move the supporting claws 6b. When reaching the position A1 shown in FIG. 2, the other support claw 6c comes into contact with the third sensor 10, and accordingly the support claw 6b temporarily stops at the position A1. After that, the support device 6 is re-driven, but since the support device 6 does not reach the predetermined drive speed rapidly from the stopped state, the support pawl is held at a relatively low speed until the predetermined drive speed is reached. From 6b, the nursery box 2 is the second conveyor 1
1 (corresponding to the conveying device) is transferred to the front end portion (corresponding to a predetermined position of the conveying device) (corresponding to the second control means).

Then, as shown in FIG. 2, when the supporting claw 6b reaches the position where it comes into contact with the first sensor 8, the transfer of the seedling raising box 2 to the front end of the second conveyor 11 is completed. It is confirmed by the control device (not shown) that the transfer of the nursery box 2 is completed by the detection of the first sensor 8. When the support claw 6b reaches the position where it comes into contact with the first sensor 8, the other support claw 6c comes under the holding device 5 and receives the nursery box 2.

As shown in FIGS. 1 and 2, a contact-type second sensor 9 for detecting the presence or absence of the nursery box 2 is provided at the front end of the second conveyor 11. When the seedling raising box 2 is transferred to the front end portion of the second transporting conveyor 11 as described above, the second sensor 9 detects the presence of the seedling raising box 2, the second transporting conveyor 11 is driven, and the seedling raising box 2 is shown in FIG. The second sensor 9 detects that the seedling raising box 2 is not present at the front end of the second conveyor 11.

Although the above is the normal state, the seedling raising box 2 is not sent due to some trouble and the second conveyor 11
It was supposed to remain at the front end of the. In such a state, the second sensor 9 continues to detect that the seedling raising box 2 is present at the front end portion of the second conveyor 11. And
If the second sensor 9 detects the presence of the seedling raising box 2 even after a lapse of a predetermined time after one of the supporting claws 6b comes into contact with the first sensor 8 as described above, the control device causes some trouble. The support device 6 is stopped when it is determined that it is done (corresponding to the restraint means).

The above states are normal working states. On the other hand, there is a case where the support device 6 is idled without inserting the seedling raising box 2 into the vertical transport device 3 or the support device 6 at the time of inspection and maintenance. In such a case, the support claw 6 of the support device
Even if b and 6c contact the first sensor 8, the second sensor 9
Always detects that nursery box 2 does not exist.
The transport conveyor 11 is not driven, and the support claw 6
Even if a predetermined time elapses after the contacts b and 6c come into contact with the first sensor 8, the restraint operation for stopping the support device 6 is not performed. As a result, the maintenance and the like can be performed without any trouble by making the support device 6 alone idle.

[Other Embodiments] In the above embodiments, the second sensor 9 has a function of operating the second conveyor 11 when the seedling raising box 2 is transferred to the front end of the second conveyor 11, and a support function. It has two kinds of functions of detecting whether or not the seedling raising box 2 is present at the front end portion of the second conveyor 11 after a predetermined time has elapsed since the claws 6b and 6c contacted the first sensor 8. But,
In the second sensor 9, the former function is eliminated and only the latter function is provided, and the supporting claw 6 serves as the former function.
When b and 6c come into contact with the first sensor 8, the second conveyor 11 may be operated based on this. Also, in this embodiment, the seedling raising box 2 from the first conveyor 1 was sequentially lifted by the vertical conveyor 3 and then dropped onto the supporting device 6, but the position of the supporting device 6 was changed to the first position.
The height may be lower than that of the transport conveyor 1, and the seedling raising box 2 may be directly dropped onto the supporting device 6 from the rear end of the first transport conveyor 1. The second conveyor 11 as described above
Instead of this, a carrier truck as described in the above publication may be used.

In order to make the comparison with the drawings convenient, reference is made to the claims of the utility model registration, but the invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view of a transfer device, a supporting device and the like in a seeding plant.

FIG. 2 is a front view of the vicinity of a supporting device, a holding device, and a second conveyor.

FIG. 3 is a front view of the vicinity of a first conveyor and a vertical conveyor.

[Explanation of symbols]

 1 Transport Conveyor 2 Nursery Box 4 Transfer Device 6 Support Device 8 1st Sensor 9 2nd Sensor 11 Transport Device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B65G 57/03 B65G 57/03 E G06M 7/00 301 G06M 7/00 301A

Claims (1)

(57) [Scope of utility model registration request] 1. A transfer device (4) for sequentially transferring and stacking seeded nursery boxes (2) from a conveyor (1) to a support device (6), and transfer of the transfer device (4). First control means for operating the support device (6) so that the support position of the seedling raising box (2) sequentially moves downward in conjunction with the operation, and a predetermined number of seedling raising boxes (2) for the support device (6). ) Are stacked, the second control means for activating the supporting device (6) so as to transfer the seedling raising box (2) supported by the supporting device (6) to a predetermined position of another transfer device (11). In the seeding plant, the support device (6) is operated to a position where the seedling raising box (2) supported by the support device (6) is moved to a predetermined position of the transfer device (11). A first sensor (8) for detecting such a situation, and the predetermined position of the carrying device (11). A second sensor (9) for detecting the presence or absence of the seedling raising box (2) in a stationary state, and the second sensor (9) causes the seedling raising box (2) to be detected a predetermined time after the detection operation of the first sensor (8). ) Is detected, the seeding plant is equipped with a restraining means for stopping the supporting device (6).