JP2588139Y2 - Seeding suppression device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sowing suppressor for sowing holes in a bed soil filled in advance when seeds such as vegetables are sowed in each cell of a seedling raising tray.

[0002]

2. Description of the Related Art Conventionally, this type of pressure reducing device for seeding is disclosed in Japanese Utility Model Laid-Open Publication No. Hei 5-21612 and as shown in FIG. The lowering device P is moved downward by following the operation of the elevating device V, and a hole H for sowing is made in the floor soil B filled in each cell C of the seedling raising tray T.

[0003]

By the way, in order to move the pressure-reducing device P downward and make the hole H, and then to move the pressure-reducing device P up again, the downward movement command of the elevating device V must be issued. It is necessary to release and automatically return to the upward movement side, or to positively give an upward movement instruction to the lifting / lowering device V. In this case, it is possible to move up by a manual switching operation. However, since the operation is complicated, a lower end sensor for detecting the lower end position where the lower end of the pressure suppressor P protrudes into the cell C and the hole H is opened is provided. It is preferable to automatically move the pressure-reducing device P upward by detecting the lower end of the lower end sensor for saving labor.

[0004] However, the seedling raising tray T is displaced from its normal position due to an improper adjustment of the cell detection sensor, etc.
When the upper surface of the tray T that partitions each cell C is located immediately below the tip of the cell C, the pressure-reducing device P stops on the upper surface of the tray T even when the elevating device V moves down, and enters the cell S. Therefore, there is a problem in that the lower end sensor does not operate and the pressure-reducing device P is not moved up forever, so-called a pressure-reducing lock occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a seed-suppressing device that can automatically suppress the pressure-reducing device and avoid the pressure-reducing lock.

[0006]

Therefore, in order to achieve the above object, as shown in FIG. 1, a pressure-suppressing device 1 is provided which presses floor soil filled in cells of a seedling raising tray to form a hole for sowing. In the seeding pressure control device in which the pressure suppressor 1 follows the vertical movement of the lifting device 2, a lower end sensor X for detecting a lower end position where the lower end of the pressure suppressor 1 protrudes into the cell.
2, a timer T1 that starts timing in conjunction with the downward movement of the pressure suppressor 1 and measures a time longer than the time when the pressure suppressor 1 enters the cell and completes normal pressure reduction; The lifting and lowering control device 3 for moving the pressure-reducing tool 1 upward in the earlier of the detection of the lower end by the sensor X2 and the time-up of the timer T1 is provided.

[0007]

[Action] When the seedling raising tray is in the proper position, the crusher 1
Rushes into the cell to complete the normal suppression, and the lower end sensor X
By detecting the lower end of 2, the pressure-reducing device 1 is automatically moved upward. On the other hand, when the seedling raising tray is displaced from the normal position and the upper surface of the seedling raising tray that partitions the cell is positioned immediately below the pressure suppressor 1, the pressure suppressor 1 does not enter the cell by hitting the upper surface of the seedling raising tray, Although the lower end sensor X2 does not operate, the pressure reducing device 1 is moved upward by the time-up of the timer T1, and the pressure reduction lock can be avoided.

[0008]

FIG. 1 shows an apparatus in which an apparatus main body 100 is disposed above a conveyor 4 for intermittent conveyance.
At 0, a pressure-suppressing device 1 for opening a seeding hole H in a packed bed soil B of a cell C, which is divided into a large number of cells vertically and horizontally on a seedling raising tray T, a cylinder 21 and a rod 22, and the pressure-suppressing device 1 is moved vertically. In addition to having a pressure reducing unit 200 provided with an elevating device 2 of an air type, a hydraulic type, or the like, a sowing unit 300 for sowing a seed a in a sowing hole H is also provided.

The pressure-suppressing device 1 provided in the pressure-suppressing section 200 is provided with two rows in the feeding direction of the conveyor 4 and, for example, eight in number equal to the number of cells C in the width direction, that is, a total of 16 cells. Of the rod 22. Lifting device 2
The cylinder 21 is supported by the main body 100 via a vertical position adjusting mechanism 23 and a horizontal position adjusting mechanism 24.

The seeding unit 300 communicates with a seed receiving hopper 51 supported by the arm 101 via a hose 52, and is connected to a seed reservoir 5 which rotates around an axis 55 by operating links 53 and 54, and a suction blower. A plurality of seed suction nozzles 6 extending below the pipe 60 and juxtaposed in the width direction of the conveyor 4, a horizontal moving cylinder 71 and a vertical moving cylinder 7;
And a moving mechanism 7 for moving the seed suction nozzle 6 held by the moving body 73 from the suction position into the seed reservoir 5 to the seeding guide ports 80 having the same number as the number of nozzles.
And a seed discharging tool 8 having 2 rows × 8 discharging pipes 82, which are in communication with the sowing guide port 80 via a communication hose 81 and are similar to the pressure suppressor 1.

In this manner, the floor soil B of each cell C is determined based on the detection result of the first cell detection sensor 91 disposed in the pressure reduction section 200.
After sowing a hole H for sowing, the seed a is sowed based on the detection result of the second cell detection sensor 92 arranged in the sowing unit 300. Note that these cell detection sensors 91,
Reference numeral 92 is attached so that the position can be changed according to the shape of the seedling raising tray T and the like.

With the above configuration, there is provided a lower end sensor X2 for detecting a lower end position where the lower end of the pressure suppressor 1 protrudes into the cell C. The lower end sensor X2 may directly detect the position of the pressure suppressor 1, but in the illustrated example, the position of the rod 22 of the lifting device 2 is detected. The magnet attached to the position is detected. Further, based on the detection result of the first cell detection sensor 91, time measurement is started from the rising output x1 of the down movement command y1 output to the lifting device 2 based on the detection result of the first cell detection sensor 91. There is provided a timer T1 for measuring a time of, for example, about 2 seconds longer than a time of, for example, about 1 second to complete the suppression.

The lowering device 2 is driven by the lower end detection by the lower end sensor X2 or the time-up of the timer T1, whichever is earlier.
The lifting / lowering control device 3 for canceling the downward movement command y1 of the pressure-suppressing device 1 and moving the pressure-suppressing device 1 upward is provided. The elevation control device 3
For example, as shown in FIG. 2, a break contact X2, which is cut by a lower end detection of a lower end sensor X2, is provided to a lower movement instruction means Y1 such as a relay for giving a downward movement instruction y1 to the lifting / lowering device 2 to lower the pressure reducing device 1. -B and make contact Y1 of the downward movement command means Y1
A break contact T1-b that is cut off by the time-up of a timer T1 arranged in series with -a1, a make contact X1-a that closes in a pulsed manner at the rising output x1 of the lower end command y1, and a make contact Y1-a2 of the downward movement command means Y1. And a self-holding circuit S composed of a parallel circuit of the above is connected in series. In addition, the elevation control device 3 can be configured using a contactless switching element such as a transistor, a microcomputer, or the like.

With the above-described configuration, normally, the break contact X2-b is cut off by the detection of the lower end of the lower end sensor X2, the energization of the lowering command means Y1 is cut off, and the pressure-reducing device 1 automatically moves up. Will be done. On the other hand, when the upper surface of the seedling raising tray T is located immediately below the pressure suppressor 1 due to the displacement, the lower end sensor X2 does not operate, but the timer T1 times out, the break contact T1-b is cut off, and the lowering sensor moves down. When the power supply of the command means Y1 is cut off, the pressure-reducing device 1 is moved upward, and the pressure-reducing lock can be avoided.

[0015]

As described above, according to the present invention, when the seedling raising tray is at the normal position, after the normal pressure suppression is completed, the pressure suppressor 1 can be automatically moved upward by detecting the lower end of the lower end sensor X2. When the upper surface of the seedling raising tray that partitions the cell is positioned immediately below the pressure suppressor 1 with the seedling raising tray deviated from the proper position, the pressure suppressor 1 can be moved upward by the time-up of the timer T1, and the pressure reduction lock can be avoided.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a sowing suppression device according to the present invention.

FIG. 2 is a circuit diagram of an elevation control device provided in the sowing suppression device.

FIG. 3 is a perspective view of a conventional sowing suppression device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1; Squeezing implement, 2; Lifting device, 3; Lifting control device, 4; Conveyor, 5; Seed reservoir, 6; Seed suction nozzle, 7; Moving mechanism, 8; Seed release tool, T; Seedling tray, C; , B;
Floor soil, H: Seeding hole, X2: Lower end sensor, T1: Timer

Claims (1)

(57) [Scope of request for utility model registration] 1. A pressure-suppressing device (1) for pressing a floor soil filled in a cell of a seedling raising tray to form a hole for sowing, and moving the pressure-suppressing device (1) in accordance with the vertical movement of a lifting / lowering device (2). In the soothing suppression device for seeding, a lower end sensor (X2) for detecting a lower end position where the lower end of the pressure suppressor (1) protrudes into the cell, and timing in conjunction with a downward movement of the pressure suppressor (1). And a timer (T) for measuring a time longer than the time when the pressure-reducing device (1) enters the cell and completes the normal pressure-reducing operation.
1) and a lifting / lowering control device (3) for moving the pressure-reducing device (1) up at the earliest of detection of the lower end by the lower end sensor (X2) and time-up of the timer (T1). A soothing pressure suppressor characterized by the following.