JPH064658Y2 - Two-stage adsorption seeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a structure for adsorbing seeds in a hopper one by one and sowing the seeds in a pot of a seedling box.

(B) Conventional Technology In a conventional seeding machine for seeding on a seedling box, a technique for sowing one grain at a constant interval is known. For example, JP-A-60-33291 is disclosed.
These have many holes to insert seeds on the belt,
By rotating the belt, the seeds were inserted into the insertion holes, conveyed, and sown in fixed amounts.

(C) Problems to be solved by the device However, in the structure in which the insertion hole is formed on the belt as described above, the size of the seed changes depending on the kind of seed. It must be replaced with a belt that has a matching fitting hole. Replacing this belt is a very troublesome work to remove the cover on one side, and a belt suitable for the seed is also required.

(D) Means for Solving the Problem The present invention is configured as follows in order to obtain a seeder that does not require such belt replacement.

In an adsorption type seeder that adsorbs and conveys seeds on the hopper 20 by the adsorption nozzle 15, an extraction nozzle 22 that adsorbs and conveys seeds is provided in the hopper 20, and when the adsorption nozzle 15 approaches the extraction nozzle 22, the extraction nozzle The electromagnetic valve 6 of 22 is configured to be closed to open the seed.

(E) Embodiment The purpose of the present invention is as described above, and the structure of the present invention will be described based on the structure of the embodiment shown in the accompanying drawings.

FIG. 1 is a front sectional view of a two-stage adsorption type seeder of the present invention. FIG. 2 is a front sectional view of the seed pickup section. FIG. 3 is a valve control circuit diagram of the pickup section. FIG. 4 is a front sectional view showing another embodiment of the same.

In the two-stage adsorption type seeder, a base 3 is placed on a carrier frame 1 for carrying a seedling box 2, a cover 4 is fixed on the upper left side of the base 3, and an electromagnetic switch with a differential pressure detection switch is mounted on the cover 4. The valves 5 and 6 are placed, and a support rod 7 whose lateral position can be adjusted by a knob bolt 8 is projected laterally.

A cylinder 9 is vertically provided at the tip of the support rod 7, a compression tool attachment body 10 is fixed to the tip of a piston rod 9a of the cylinder 9, and a compression tool 11 is fixed to the compression tool attachment body 10. The pressure-reducing tool 11 has pressure-reducing protrusions of different shapes radially protruding so that it can be arbitrarily selected.

An elevating cylinder 12 is erected on the rear side of the cover 4,
Piston rods 12a and 12b of the lifting cylinder 12
A horizontally moving cylinder 13 is horizontally provided at the tip, and a pickup head 14 is fixedly provided at the tip of a piston rod 13a of the horizontally moving cylinder 13. The pickup head 14 has pots 18 and 18 placed on the seedling box 2 ...
The same number of suction nozzles 15.1 as the number of rows
5 are erected, and the other side of the suction nozzles 15 is connected to the electromagnetic valve 5 via a hose 16.

A hopper 20, which is the pickup unit of the present invention, is disposed on the side of the horizontal moving cylinder 13. A suction nozzle 15.1 is provided between the hopper 20 and the pressure suppressor 11.
5, the same number of seed drop chutes 21, 21, ... Are erected, and the suction nozzles 15, 15 ...
It is possible to reciprocate between 1.21 ...

As shown in FIG. 2, the pickup unit of the present invention has the same number of lifting pipes 19, 19 ... As the suction nozzles 15, 15. The portion is externally fitted with a spring 23 and is urged downward, the hose 25 is communicated with the other end thereof is communicated with the electromagnetic valve 6, and a stopper 19a is fixed to the lower end of the arm 24a of the rotary cylinder 24. The lifting pipe 19 is moved up and down by abutting and moving the arm 24a up and down, and the extraction nozzle 2 is attached to the upper end of the lifting pipe 19.
2 is fitted.

One reciprocating cycle of the elevating pipe 19 by the rotary cylinder 24 is synchronized with one reciprocating cycle of the elevating cylinder 12 and the horizontal moving cylinder 13, and when the extraction nozzle 22 is at the highest position and the adsorption nozzle 15 is on the hopper 20. The extraction nozzle 22 and the suction nozzle 15 are inherited so as to coincide with the time of the lowest descent, and further, the seedling box 2
It is also linked to the movement of.

Then, the pickup head 14 moves the seed drop chute 2
1, a limit switch 26 that is turned on when it reaches position 1 is provided on the horizontally moving cylinder 13 and
A limit switch 27 is provided on the side cover 17 for fixing the hopper 20. The limit switch 27 is turned on when the hopper 20 descends on the hopper 20 and reaches a point where the hopper 20 and the extraction nozzle 22 are connected.

As shown in FIG. 3, the limit switches 26 and 27 are interposed between the electromagnetic valves 5 and 6 and the control circuit 29, 34 is a vacuum pump, 35 and 36 are differential pressure detecting devices, 3
Reference numeral 0 is an alarm device for issuing an alarm when no seed is adsorbed by the adsorption nozzle 15 or the extraction nozzle 22.

FIG. 4 shows another embodiment of the pickup section, in which the extraction drum 31 is horizontally mounted on the bottom surface of the hopper 20 ', and the suction nozzles 15, 15 ...
The same number of suction holes 31a, 31a ... Are opened, and a hose 32 is connected to one end of the rotary shaft 31b.
Is connected to the electromagnetic valve 6 ', and is connected to the rotary cylinder 24' at the other end of the rotating shaft 31b so that the conveying speed of the suction nozzle 15 and the rotating speed of the extraction drum 31 are synchronized. Although four rows of suction holes 31a are opened on the extraction drum 31 at every 90 degrees, the number of rows may be one and may be one. Therefore, the suction nozzle 15 causes the seed drop chute 2 to
1 in synchronization with the speed of one reciprocation between the hopper 20 'and the hopper 20', the extraction drum 31 is rotated for each suction hole 31a, and a limit switch is arranged on the rotary shaft portion in the same manner as described above to suck seeds. Open on the suction nozzle 15
It is configured to be inherited by.

(F) Action of the device When the seeding work is performed in such a configuration, the pot 18
Each time a row is transferred, the pressure suppressor 11 moves up and down once by the cylinder 9 to form a recess on the pot 18, and the pickup head 14 is moved from the seed drop chute 21 onto the hopper 20 by the horizontal moving cylinder 13. Further, it is lowered by the lifting cylinder 12, and at the same time, the extraction nozzle 22 adsorbs the seed in the hopper 20 and ascends by the rotary cylinder 24, and reaches the top dead center. At the same time, the adsorption nozzle 15 reaches the bottom dead center and the limit is reached. Switch 27
Is turned on, the electromagnetic valve 6 is switched and closed, the suction of the extraction nozzle 22 is stopped, and the seed is adsorbed to the adsorption nozzle 15.

Then, the extraction nozzle 22 descends again to adsorb the seeds in the hopper 20 (the limit switch 27 is turned off as the pickup 14 rises), and the adsorption nozzle 15
Is raised again, and when the horizontal moving cylinder 13 contracts and reaches the seed drop chute 21, the limit switch 26
Is turned on, the electromagnetic valve 5 is switched, and the suction nozzle 1
The suction of No. 5 is stopped, and the seeds fall in the seed drop chute 21 and fall into the concave portion on the pot 18 formed by the pressure suppressor 11.

Thus, the seeding is performed by repeating the suction nozzle 15 and the extraction nozzle 22 every time they are transferred in a row.

(G) Effect of the Invention With the above-mentioned configuration, the present invention has the following effects.

Firstly, the extraction nozzle adsorbs the seed in the hopper and inherits it to the adsorption nozzle, so the seed is adsorbed in two stages and sowed, and only one grain can be adsorbed and conveyed reliably,
The pickup accuracy has improved significantly.

Secondly, since the seeds are adsorbed and conveyed by the extraction nozzles and the adsorption nozzles, it becomes possible to pick up one by one regardless of the variety, shape, size, etc. of seeds, and a hopper and a conveying device suitable for the seeds are provided. As a result, it is no longer necessary to change the device every time the seed is changed, and handling is easier.

[Brief description of drawings]

FIG. 1 is a front sectional view of the adsorption type seeder of the present invention. FIG. 2 is a front sectional view of the seed pickup section. FIG. 3 is a valve control circuit diagram of the pickup section. FIG. 4 is a front sectional view showing another embodiment of the same. 6 ... Electromagnetic valve 15 ... Adsorption nozzle 20 ... Hopper 22 ... Extraction nozzle

Claims (1)

[Scope of utility model registration request] 1. An adsorption-type seeder that adsorbs and conveys seeds on a hopper 20 by an adsorption nozzle 15, and a hopper 2
A two-stage adsorption characterized in that an extraction nozzle 22 for adsorbing and transporting seeds in 0 is provided, and when the adsorption nozzle 15 approaches the extraction nozzle 22, the electromagnetic valve 6 of the extraction nozzle 22 is closed to open the seeds. Type seeder.