JP2666967B2 - Control device for vacuum adsorption type seeder - Google Patents

Description

The present invention relates to a control device for a vacuum suction type sowing machine that controls the suction of seeds in a hopper and the elevation of suction nozzles.

(B) Conventional technology The conventional vacuum suction type sowing device inserts the suction nozzle into the hopper, regardless of whether or not the seed is sucked by the suction nozzle, sucks the seed, and then transports it to the seeding position to release the suction. The seeds were released.

(C) Problems to be Solved by the Invention However, if the configuration is such that seeds are not adsorbed to the suction nozzle and are transported to the seeding position, a part of the pot seedlings will fall out, resulting in inefficient seeding work. It will be.

Also, if the suction nozzle is provided with a sensor to detect whether or not the seed is adsorbed and the suction nozzle is reciprocated between the hopper and the seeding position until the seed is adsorbed, the seed is not adsorbed to the suction nozzle or the suction nozzle is When it is distorted, the reciprocating motion is continued for a long time, so that the seeding operation cannot be continued.

(D) Means for solving the problem The present invention has been made in view of such a point, and has the following configuration.

The same number of suction nozzles 36 and chutes 39 as the number of pots 17a
And the extraction nozzle 42, the extraction nozzle 42 is arranged so as to be able to move up and down in the hopper 41, the suction nozzle 36 reciprocates between the chute 39 and the hopper 41, and the seeds in the hopper 41 are extracted by the extraction nozzle 42. The suction nozzle 36 is configured to be transferred to the suction nozzle 36, the reciprocation of the suction nozzle 36 is stopped, the extraction nozzle 42 is repeatedly moved up and down, and the delivery of the seeds from the extraction nozzle 42 to the suction nozzle 36 is performed. Even if the extraction nozzle 42 moves up and down a certain number of times, if the seeds are not adsorbed on all the suction nozzles 36, the suction nozzle 36 is transported to the upper part of the chute 39 in the state where the seeds are not adsorbed, and the set number N of elevating and lowering is set. If the seeds are adsorbed by all the suction nozzles 36, the extraction nozzle 42 can be changed.
Even if the number N of raising and lowering is not reached, the suction nozzle 36 is configured to be conveyed and seeded above the chute 39.

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

1 is an overall front view of a seeding plant, FIG. 2 is a side sectional view of a soil supply device, FIG. 3 is a perspective view of a pulley, and FIG.
The figure is a front sectional view of a vacuum adsorption type sowing machine, FIG. 5 is a block diagram of sowing control, and FIG. 6 is a flowchart of seed adsorption control.

The overall configuration will be described with reference to FIG.
Are connected and installed in series in the horizontal direction, and the conveyors 1, 2, and
3 is a base 1 supported by legs 1a, 1a, 2a, 2a, 3a, 3a, respectively.
b, 2b, 3b are provided horizontally, and the transport rollers 1c,
1c, 2c, 2c, 3c, 3c ... are laid horizontally, and the transport rollers 1c, 1c ...
, A chain 4 is wound and driven by a drive motor 5 via a chain 6 so that the seedling box 19 can be transported from the conveyor 1 to the conveyor 3.

On the conveyor 1, a seedling box supply device A for dropping seedling boxes 19 one by one from the left onto the transport rollers 1c, 1c..., A soil placement device B for dropping a certain amount of soil onto the seedling box 19, and a brush. A flattening device C, an irrigation device D for sprinkling water to give water, and a soil supply device H are disposed behind the soiling device B. The soil feeding device H supplies soil to a hopper of the soiling device B. ing.

As shown in FIG. 2, the soil supply device H is provided with feeding belts 62 and 63 below hoppers 60 and 61 for charging two types of soil (peet moss, vermiculite, etc.), and is fixed downward in the center. The humidifying mixer 64 is configured so that it can be put into the humidifying mixer 64 by a quantity, a humidifying nozzle 65 is laid horizontally in the humidifying mixer 64, and a mixing / transporting auger 66 is provided below the humidifying nozzle 65. The feeding belts 62 and 63 are driven by a motor 68.

The mixed soil reaches the lower portion of the vertical conveyor 69 from the guide plate 67 from the transport end of the mixing / transfer auger 66, is transported upward by the vertical conveyor 69, and is thrown into the hopper 70 of the soiling device B from the chute 69a. It is. The vertical conveyor 69
Are provided with pulleys 71, 72 at the upper and lower ends of the transport case, and a transport belt 73 having buckets 73a, 73a,... Fixed around the pulleys 71, 72 is wound between the pulleys 71, 72.
As shown in FIG. 3, a large number of holes a, a... Are opened on the outer peripheral surface, and even if the soil adhered to the conveyor belt 73 adheres to the pulley, the soil is rubbed by friction or the like and the holes a, a. This prevents the pulley from falling and increasing the radius of the pulley, causing the tension to become tight and causing an overload.

The soil is dropped from the hopper 70 of the soiling device B to the plug tray 17, and the soil overflowing from the plug tray 17 and the soil removed by the leveling device C are returned to the middle part of the guide plate 67 by the conveyor 74. It has been made reusable.

A seeding device E of the present invention is provided on the conveyor 2,
A compressor 13 for operating the air cylinder of the seedling box supply device A and the seeding device E and a vacuum pump 14 for sucking the seeds of the seeding device E are mounted in the legs 2a. A soil covering device F and an irrigation device G for covering the soil on the seeds are mounted.

Receiving trays 15 and 16 are provided below the irrigation devices D and G, and receive overflowing water and discharge it from drainage ports 15a and 16b in the center.

As shown in FIG. 4, the seeding device E of the present invention
A cover 21 is provided on the upper left side of the seeding frame 20, and electromagnetic valves 22, 23 are provided on the cover 21, and an operation panel 18 is provided in front of the cover. A support rod 24 is provided on the right side of the cover 21 so as to be adjustable in the left-right position, and is fixed with a fixing screw 25.An air cylinder 26 is provided upright at the tip of the support rod 24, and a pressure-reducing device is provided at a lower end of a piston rod 26a of the air cylinder 26. An attachment body 27 is fixedly provided, and a compression tool 28 is provided on the compression tool attachment body 27 so that the shape of the tip can be changed.

At the tip of the support rod 24, a switch 29 for detecting the highest position of the pressure suppressor attachment 27 is provided.On the seeding frame 20, a switch 30 for detecting the lowest position of the pressure suppressor attachment 27 is provided. A position sensor 31 for detecting the pot 17a of the plug tray 17 for starting the pressure-reducing operation is provided on the lower side.

A vertical cylinder 33 is erected behind the cover 21, a horizontal cylinder 34 is provided horizontally at the upper end of a piston rod 33 a of the vertical cylinder 33, and a pickup head 35 is provided at a tip of the piston rod 34 a of the horizontal cylinder 34. , Pots 17a, 17 in the width direction
The same number of suction nozzles 36 as the number of a ... are mounted.
Each of the suction nozzles 36 is provided with a differential pressure detection sensor 37 for detecting and confirming whether or not a seed is being sucked. The suction nozzles 36 are connected to the vacuum pump 14 via the electromagnetic valve 22.

A switch that turns on the horizontal cylinder 34 at the minimum contraction position
38 is provided on the horizontal cylinder 34, and the suction nozzles 36, 36 at that position, and the same number of chutes 39,
.. Are guided from the suction nozzle 36 to the pot 17a, and a position sensor 50 for starting the sowing operation is provided below the chute 39.

A switch 40 is provided at the most extended position of the horizontal cylinder 34 to detect the right end, and a hopper 41 is provided below the pickup head 35 at that position.
The same number of extraction nozzles 42, 42... As the suction nozzles 36 penetrate the center 41, and a switch 46 is provided at the lowest position of the pickup head 35 to detect the position.

The lower ends of the extraction nozzles 42, 42.
The switches 47, 48 are provided at the highest and lowest positions of the receiving table 42a of the extraction nozzles 42, 42,..., And swing the arm 43a.
Are moved up and down so that the delivery of the seed is performed at the highest position of the extraction nozzle 42 and the lowest position of the suction nozzle 36.

In addition, hoses 44,44… from the middle of the extraction nozzles 42,42…
Are provided with differential pressure detection sensors 45, 45,... For confirming the adsorption of the seeds to the hoses 44, 44, and the other ends of the hoses 44, 44,. ing.

As shown in FIG. 5, the position sensors 31, 50, the differential pressure detection sensors 37, 45, etc.
U / RAM / ROM / timer T) are input / output via interfaces 58 and 59 to a control circuit 52 composed of U / RAM / ROM / timer T, and are controlled in accordance with a control program stored in the ROM. The control circuit 52 is provided in the operation panel 18, and the operation panel
On the top 18, a main switch 55, a suction confirmation lamp 53, a one-time operation switch 56, and an ascending / descending number setting dial 54 that can arbitrarily set the ascending / descending number are provided.

The control of the pickup head 35, which is the main part of the present invention, to adsorb the seeds and drop them into the pot 17a will be described with reference to the flowchart of FIG.

When the main switch 55 is turned on and the pot 17a is located at the seeding position by the position sensor 50, the conveyance is stopped and the solenoid 75 of the solenoid valve of the horizontal cylinder 34 is turned on.
Then, when it reaches the position of the switch 40 on the right end, the solenoid 75 is turned off and the solenoid 77 of the vertical cylinder 33 is turned off.
When the switch 46 located at the lowermost position is turned on, the solenoid 77 is turned off and the number-of-elevations setting dial 54 is turned off.
Is read, the electromagnetic valves 22 and 23 are turned on, suction of the suction nozzle 36 and the extraction nozzle 42 is started, and the solenoid 79 of the rotary cylinder 43 is turned on to raise the extraction nozzle 42.

When the switch 47 is turned on and the extraction nozzle 42 reaches the upper end, the ascent is stopped and the suction of the extraction nozzle 42 is stopped.
Adsorb the seeds on 36. At this time, the seeds
… When all the strips are adsorbed, the confirmation lamp 53 is turned on, the vertical cylinder 33 is extended in priority to the number of times the extraction nozzle 42 moves up and down, the horizontal cylinder 34 is reduced, and the chute 39 abuts on the switch 38 to the top. It is transported. When reaching the upper end on the left end, the suction of the suction nozzle 36 is stopped, the seed is released, and sowing is performed.

If at least one of the differential pressure detection sensors 37, 37,... Is not adsorbed, the extraction nozzle 42 is lowered and the seeds are adsorbed and raised again in the hopper 41.

However, if the seeds are not adsorbed on all the suction nozzles 36, 36 ... even if the seeds are moved up and down the set number of times N, the vertical cylinder 33 is extended and the horizontal cylinder 34 is contracted. The seeds are conveyed above the chute 39 and seeded. Sowing is performed by repeating the above.

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

First, since the number N of times of setting of the extraction nozzle can be changed arbitrarily, even if there is a nozzle that does not suck, the suction operation is not repeated forever. Can now be adjusted.

Secondly, when the seeds are adsorbed on all the suction nozzles, the next operation is performed prior to the set number of elevating and lowering N, so that the operation speed is increased and the operation efficiency can be improved.

[Brief description of the drawings]

1 is an overall front view of a seeding plant, FIG. 2 is a side sectional view of a soil supply device, FIG. 3 is a perspective view of a pulley, FIG. 4 is a front sectional view of a vacuum adsorption type seeder, and FIG. Seeding control block diagram, FIG. 6 is a flowchart of seed adsorption control. 17 Plug tray 17a Pot 39 Shoot 36 Suction nozzle 41 Hopper 42 Extraction nozzle 53 Confirmation lamp

Claims (1)

(57) [Claims] 1. A suction nozzle 36, chutes 39 and extraction nozzles 42 having the same number as the number of the pots 17a are provided. The extraction nozzles 42 are arranged so as to be able to move up and down in a hopper 41. Reciprocating between the top and the extraction nozzle 42
The suction nozzle 36 is configured to adsorb the seeds in the hopper 41 and transfer it to the suction nozzle 36, stop the reciprocating motion of the suction nozzle 36, and repeatedly move the extraction nozzle 42 up and down, thereby
The seeds are transferred from the suction nozzle 36 to the suction nozzle 36, but even if the extraction nozzle 42 is moved up and down a certain number of times, if the seed is not sucked by all the suction nozzles 36, the suction nozzle 36 Set the number of raising and lowering set N to be conveyed and sowed to the upper side, and the set number of raising and lowering N can be changed arbitrarily.
A control device for a vacuum suction type sowing machine, characterized in that the suction nozzle 36 is conveyed above the chute 39 for seeding even if the number N of times of elevating and lowering the extraction nozzle 42 has not been reached.