JPH02283203A - Seeding machine seeding amount adjustment device - Google Patents

Abstract

PURPOSE:To sow an arbitrarily fixed number of seeds in a pot by arbitrarily setting a sowing process for sucking the seeds from a seed hopper with a suction nozzle and subsequently releasing the sucked seeds above a shoot with a repeat- setting dial of a control box. CONSTITUTION:When a sensor 10 detects a pot 2a below a pressing device A, pressing tool 14 is moved downward to form a depression on the floor soil in the pot. When a seeding box 1 reaches a position sensor 29, a sowing process comprising the stopping of a conveyor 3, the reading of the value of a sow repeat-setting dial 44, the sucking of seeds from a seed hopper 11 with a sucking nozzle 20 and subsequently the releasing of the sucked seeds above a shoot 9 is repeated set times.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a technique for adjusting the amount of seeds to be sown in one pot in a vacuum adsorption type seeding device.

(B) Prior Art Vacuum adsorption type seeding devices have been known for a long time, and these seeding devices attract seeds one by one to a suction nozzle and release them onto a seeding bed to sow the seeds. The structure was such that the seeds were transported and then entered the next seeding process.

(c) Problems to be solved by the invention As described above, if only one seed can be sown in one pot, competitive germination cannot be promoted with seeds with weak germination power or fine seeds. Therefore, when it comes to crops that are to be sown in multiple quantities, the seeds must be sown through the sowing device several times, and it is necessary to carry the tray one by one each time the sowing is sown. Furthermore, if the soil covering device, irrigation device, etc. are installed integrally with the seeding device, there is a problem in that the tray cannot be removed until the soil covering device, etc. has been removed or the last step has been completed.

(d) Means for solving the problem In view of the above points, the present invention is constructed as follows.

The bot drawing tray 2 is placed on the conveyor 3 and conveyed,
In the seeding machine that detects the pot 2a of the pot seedling tray 2 and sows seeds by vacuum suction, a seed hopper 11 is provided.
Seeds are adsorbed by a suction nozzle 20 and released onto a chute 9 for rimming, and this process can be arbitrarily set using a repeat setting dial 44 provided on a control box 5.

(E) Embodiment The object of the present invention is as described above, and the structure of the embodiment shown in the attached drawings will be explained below.

FIG. 1 is a front sectional view of the vacuum suction type seeding device, FIG. 2 is a block diagram of seeding control, and FIG. 3 is a flowchart of seeding control.

The vacuum adsorption type seeding device is placed on a conveyor 3 that conveys trays 2 for potted seedlings placed on seedling boxes 1. It has a stand)-shaped bong 2a, 2a, etc., and the floor is filled before entering the vacuum adsorption type seeding device.

In the vacuum suction type seeding device, a seeding frame 4 is fixed on a conveyor 3, and a control box 5 is connected from the side where the plug cod tray 2 on the seeding frame 4 is conveyed (the left side in this embodiment).
, electromagnetic valves 6 and 7, a pressing device A, a suction device B, and a seed hopper 11 are arranged, and the pressing device A is connected to the sowing frame 4.
An air cylinder 13 is installed vertically on a connecting plate 12 installed horizontally on the air cylinder 1 so that the left and right position can be adjusted.
No. 3 has a spring inside so that it expands when compressed air is pumped and returns to its original state when the pumping is stopped.

A position sensor 19 detects whether the pressing tool 14 is in its original position.

A pressing tool 14 is attached to the lower end of the piston rod 13a of the air cylinder 13, and the pressing tool 14 forms a recess for inserting seeds onto the bed filled in the pot 2a of the pot seedling tray 2. The pressing weight 4a at the tip of the pressing tool 14 has radial protrusions, and the shapes of the protrusions are different, and can be changed by rotating according to the type of seeds and the number of seeds sown.

A sensor 10 is provided below the pressing device A to detect whether or not there is a bot 2a.
The pressing tool 14 descends after being located between the two ends.

Further, a vertical cylinder 15 is erected behind the pressure bag fiA, a horizontal cylinder 16 is fixed to the upper end of the piston rod 15a of the vertical cylinder 15, and a pickup head 17 is fixed to the tip of the piston rod 16a of the horizontal cylinder 16. On the pickup head 17, suction nozzles 20, 20, . The suction nozzle 20.2
0... are communicated with a vacuum pump via an electromagnetic valve 6, and differential pressure detection sensors 22, 22... are attached to each of the suction nozzles 20, 20, and the suction nozzles 20, 2...
It is detected whether or not seeds are adsorbed to 0....

At the contracted position of the horizontal cylinder 16, the suction nozzles 20, 20... and downwardly are the chutes 9, 9...
・is erected. 21 is a position sensor that detects that the pink-up head 17 is on the chute 9, 23 is a position sensor that detects the extended position of the horizontal cylinder 16, and 28 is a position sensor that detects that the big-up head 17 is on the seed hopper 11. This is a position sensor that detects when the vehicle has descended. Further, 29 is a position sensor provided below the chute 9, which detects whether the bot 2a is at the sowing position.

A seed hopper 11 is disposed below the pickup rad 20 at the extended position of the horizontal cylinder 16, and suction nozzles 20, 20,
The same number of extraction nozzles 24, 24, .
- Differential pressure detection sensors 25, 25... are attached to each, and detect whether or not seeds are adsorbed to the extraction nozzles 24, 24....

A spring is fitted around the middle part of the extraction nozzle 24 to urge the extraction nozzle 24 downward, and the tip of the rotating arm 27a of the rotary cylinder 27 is brought into contact with the lower end of the extraction nozzle 24 to operate the rotary cylinder 27. By doing so, the extraction nozzle 24 can be raised. 3
9 is a position sensor that detects the raised position of the extraction nozzle 24.

Further, on the control box 5, a setting dial 43 for setting the number of times the extraction nozzle 24 is raised and lowered, a seeding control setting dial 44, a main switch 45, a suction lamp 46, and a -turn operation switch 47 are provided. A control circuit 40 is installed in the CPU-R.
The control circuit 40 is composed of a microcomputer such as an AM-ROM and a timer, and as shown in FIG.
Solenoids 30 and 31 of the air cylinder 13, solenoid 32 of the electromagnetic valve for pumping and stopping air from the air cylinder 13, solenoids 33 and 34 of the electromagnetic valve for extending and contracting the vertical cylinder 15, and solenoids 33 and 34 of the electromagnetic valve for extending and contracting the horizontal cylinder 16. Solenoids 35 and 36 of electromagnetic valves, a solenoid 37 of electromagnetic valves for pressurizing and stopping air from the rotary cylinder 27, a drive circuit 38 for controlling a motor for driving the transport of the conveyor 3, and the suction lamp 46 are connected.

Then, from the control circuit 40 to the input interface 41
Position sensors 19, 21, 23, 28, 39,
10 and 29, differential pressure detection sensors 22 and 25, an elevation setting dial 43, a repetition setting dial 44, and a -turn operation switch 47 are connected.

The operation of such a configuration will be explained based on the flowchart shown in FIG. 3. When the main switch 45 is turned on,
, when the seedling box 1 is not placed on the conveyor 3, the motor drive circuit 38 is driven to enable the seedling box to be conveyed, and when the seedling box 1 is placed on the conveyor 3, the tip of the seedling box 1 is placed in the position. When the sensor 10 is blocked, the motor is stopped when the position sensor 10 is ONL and positioned between the next pot 2a. Then, the solenoid 32 of the air cylinder 13 is turned on and compressed air is sent to the air cylinder 1.
3 is extended, and a recess is formed in the upper surface of the floor inside the pot using the pressing tool 14.

After a certain period of time has elapsed, the solenoid 32 is turned OFF and the air cylinder 13 is compressed by a spring, and when the position sensor 19 is turned ON, the conveyor 3 is driven, and when it reaches between the next pot, it stops again, and the same process as described above occurs. An operation is performed. However, if there is a pot at the lower end of chute 9, which will be described later, it remains stopped.

When the seedling box 1 is further conveyed and reaches the position sensor 29 and is located between the pots, the conveyor is stopped, the value C of the setting dial 44 is repeatedly read, and the extension solenoid 35 of the horizontal cylinder 16 is extended by ONL. When the position sensor 23 is turned ON, the solenoid 35 is turned OFF, and the reduction solenoid 33 of the vertical cylinder 15 is turned ON.
and reduced. Then, when the rad 17 descends to the pickup and the position sensor 28 turns on, the solenoid 33
is turned OFF, the electromagnetic valve 6 is turned ON, and the suction nozzle 2
It is sucked from 0.

On the other hand, the electromagnetic valve 7 is turned on to start suction, and the number N of ascents and descents on the ascent/descent setting dial 43 is read.

A differential pressure detection sensor 25 provided in the extraction nozzle 24 detects whether or not the seeds are adsorbed. If the seeds are adsorbed, it means that there are no seeds in the seed hopper 11, and an alarm is issued.

If the seeds have been adsorbed, the rotary cylinder 27 is turned ONL, the extraction nozzle 24 is raised, and when it reaches the elevated position sensor 39, the suction of the extraction nozzle 24 is stopped, and the seeds are removed from the extraction nozzle 24 to the suction nozzle. The receiver is passed to 20 and a differential pressure detection sensor 22 detects whether or not it is absorbed.
If the seeds are not adsorbed to all the extraction nozzles 24, 24..., the extraction nozzles 24 are removed for the N number of times.
to raise and lower.

If the seeds are adsorbed to all the extraction nozzles 24, 24..., the adsorption lamp 46 lights up and the solenoid 3
3 is turned ON, the vertical cylinder 15 is extended, and at the same time, the solenoid 36 is turned ON, and the horizontal cylinder 16 is contracted. When the pickup head 17 reaches the top of the chute 9, the position sensor 21 turns ON and suction is stopped, and the seeds fall through the chute 9 onto the pot and are sown. Then, if the number of times has not reached the set value C of the repeat setting dial 44, the above operation is repeated,
A set number of seeds are sown in the same pot.

When this seeding is finished, the conveyor 3 conveys one pot and the above operation is repeated.

(F) Effects of the Invention With the above-described configuration, the present invention provides the following effects.

First, it became possible to sow any number of seeds in one pot, and the number of seeds could be easily changed depending on the germination rate and type of crop.

Second, when sowing several seeds in one pot, it is not necessary to pass the seeding device through the seeding device for the number of seeds. It was done.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of the vacuum suction type seeding device, FIG. 2 is a block diagram of seeding control, and FIG. 3 is a flowchart of seeding control. 2... Pot seedling tray 2a... Pot 3... Conveyor 5... Control box 9... Chute 11... Seed hopper 20... Suction nozzle 44... Repeat setting dial

Claims (1)

[Claims] The pot seedling tray 2 is placed on the conveyor 3 and conveyed,
In the seeding machine that detects the pot 2a of the pot seedling tray 2 and sows seeds by vacuum suction, a seed hopper 11 is provided.
This seeding machine is characterized in that seeds are absorbed by a suction nozzle 20 and released onto a chute 9 for sowing, and this process can be arbitrarily set using a repeat setting dial 44 provided on a control box 5. Seed rate adjustment device.