JP2500314Y2 - Seed supply mechanism of seed coating processing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a seed coating process for coating seeds with a gel containing a nutrient substance for the seeds and a fungicide to protect the seeds, and to make the seeds spherical by the gel coating to facilitate sowing. The present invention relates to a seed feeding device that feeds seeds onto a formed gel film.

[0002]

2. Description of the Related Art Conventionally, seeds are generally sown without being coated, but seeds are used to protect seeds from feeding damage and to carry out pretreatments such as sterilization and germination promoting treatment before sowing seeds. There is a coated seed that coats. A conventional seed coating processing apparatus for coating seeds continuously and efficiently has a seed supply mechanism A and a gel discharge mechanism B as shown in the schematic diagram of FIG. , Curing tank (not shown) and washing tank (not shown)
Is provided.

In the seed feeding mechanism A, two holding members 2 are fixed to a gantry 1, and a drum 4 is rotatably supported on the inner peripheral surface of the holding member 2 via a seal material 3. One end (left side in FIG. 6) of the drum 4 is opened, a rotary shaft 5 is provided at the other end, a motor 6 is installed near the rotary shaft 5, and the rotation of the motor 6 is mediated by a belt 7. Be transmitted to.

The pipe line 8 connected to the left holding member 2 is connected to a suction pump 10 via a regulator 9, and the suction space formed by the left holding member 2 and the drum 4 by the suction pump 10 becomes negative pressure. Become. The outer peripheral surface of the drum 4 is slidably in contact with a notch opening of a seed container (not shown), and a seed suction hole 11 having a minute diameter is formed so as to penetrate the peripheral wall of the drum 4. A closure member 12 is provided that contacts the peripheral surface.

When the drum 4 rotates and the seed suction hole 11 comes into contact with the seed contained in the seed container, the seed suction hole 11 is sucked. The closing member 12 is closed, the seed suction hole 11 loses the suction force, and the seed falls downward.

In the gel discharge mechanism B disposed below the seed supply mechanism A, the cutting plunger 14 is vertically movably inserted into a through hole provided in the cylinder body 13 so that the valve is opened when it is lifted. The cylindrical cutting plunger 14 rises in synchronization with the drop of seeds and the gel is discharged,
Since the gel film is formed on the lower end of the cylinder body 13, the dropped seeds are placed on the hanging gel film.

Next, the cutting plunger 14 descends and the valve closes, and the cut gel film falls down by its own weight in a state of covering the seeds and is spheroidized by the surface tension, supplied to the hardening agent tank, and further washed with water. The hardener is removed in the bath and the seed coating process is complete.

[0008]

In the seed coating apparatus as described above, in order to keep the inside of the drum 4 of the seed feeding mechanism A at a negative pressure, the sealing material 3 seals the outer peripheral surface of the drum 4. Moreover, since the outer peripheral surface of the drum 4 is in sliding contact with the seal material 3, there is a problem that the sliding resistance of the drum 4 is large, the rotation speed of the drum 4 is reduced, and the life of the seal material 3 is shortened. It was The present invention aims to solve such problems.

[0009]

In the seed coating processing apparatus of the present invention, a seed supply mechanism has a notch opening formed in one side of a seed storage chamber for storing seeds, and a rotary shaft rotatably supported by a bearing. A seed suction body having an outer peripheral surface slidingly contacting the cutout opening is provided with a seed suction hole having a small diameter that opens to the outer peripheral surface, and a negative pressure is applied to a conduit communicating with the seed suction hole via a solenoid valve. Source, connected to a pipe line communicating with the air pressure source, the rotating shaft is connected to a motor, it is detected that the seed suction body has rotated to a position where the seed suction hole comes into contact with the seed in the seed storage chamber A seed suction angle detection sensor and a seed supply angle detection sensor that detects that the seed suction body has rotated until the seed suction hole reaches almost directly above the gel discharge mechanism arranged below. , The seed suction angle detection sensor and the seed supply angle detection Inverting the rotation of the motor by the detection signal of the sensor, provided with a control unit for switching the solenoid valve.

[0010]

In the seed supply mechanism of the seed coating processing apparatus configured as described above, the seed suction body rotates due to the forward rotation of the motor, and the seed suction hole of the seed suction body reaches almost directly above the gel discharge mechanism. At this time, when the seed supply angle sensor operates and the control unit commands the reverse rotation of the motor, the seed suction body rotates in the opposite direction, and when the seed suction hole reaches the position where it contacts the seed in the seed storage chamber, the seed supply The angle sensor operates and the motor rotates in the normal direction again according to a command from the controller. Therefore, the seed suction body reciprocates between the seed supply angle and the seed supply angle.

On the other hand, when the seed suction holes are alternately communicated with the air pressure source and the negative pressure source by switching the solenoid valve and the seed suction holes reach the position where they come into contact with the seed in the seed storage chamber, the seed suction holes are opened. Since the negative pressure is applied, when the seed is sucked and when the seed suction hole reaches the seed supply position, compressed air flows into the seed suction hole and the sucked seed is dropped and supplied to the gel discharge mechanism below. To do.

[0012] The duct follows the flexure and deformation of the seed suction body as it reciprocally rotates. The range affected by the air pressure and the negative pressure is only the seed suction hole and the pipeline, and the seed suction body and the rotating shaft smoothly reciprocally rotate without being affected by the air pressure and the negative pressure. Therefore, unlike the conventional seed suction mechanism, the problem that the rotation resistance of the drum is large and the rotation is lowered does not occur.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a seed suction body, FIG. 2 is a longitudinal sectional view of the seed suction body and a pneumatic circuit diagram connected to the seed suction body. Figure 3
Is a side view of a main part of the seed supply mechanism, and FIG. 4 is a partially cutaway front view of the seed supply mechanism. As shown in FIGS. 1 and 2,
The cylindrical seed suction body 20 is provided with a rotary shaft 21 on both side surfaces, and the rotary shaft 21 is fixed on a bearing stand 22.
3 (see FIG. 3) is rotatably supported.

The seed suction body 20 is provided with a seed suction hole 24 which is bent at a substantially right angle. One end of the seed suction hole 24 is opened to the outer peripheral surface of the seed suction body 20 and the other end is opened.
The pipe joint 25 is attached to the other end, and a pipe line 26 is connected to the pipe joint 25. Pipeline 26
Is a flexible hose portion 26a provided on one side.
Is connected to the pipe joint 25, the other side is connected to the solenoid valve 27, and the suction pressure switch 40 is connected to the branch pipe 39 provided in the pipe 26.
Are provided (see FIG. 2).

The solenoid valve 27 uses the conduit 26 as the conduit 29 of the air pressure source 28, or the conduit 29 according to a command from a controller (not shown).
It connects to the pipe line 31 communicating with the negative pressure source 30 by switching, and the pipe line 26 is connected to the pipe line 29 of the air pressure source 28 at the port 27a on the right side and the pipe line 26 at the center port 27b.
Is communicated with the atmosphere, and the pipe line 26 is connected to the pipe line 31 of the negative pressure source 30 at the left port 27c.

As shown in FIG. 3, a pedestal 32 installed on the left side of the bearing base 22 is provided with a seed storage chamber 33.
The seed storage chamber 33 has an opening at the top, the bottom wall 33a has a slope that decreases toward the right, the right side wall 33b is provided with a notch opening 34, and the seed suction body 20 makes sliding contact with the notch opening 34, The seeds stored in the seed storage chamber 33 are contacted.

The output shaft 35a of the geared motor 35 mounted on the mount 32 and the rotary shaft 21 are connected by a coupling 36 (see FIG. 4). A seed suction angle detection sensor 37 and a seed supply angle detection sensor 38 are arranged near the side surface of the seed suction body 21 (see FIG. 1), and the seed suction hole 24 contacts the seed inside the seed storage chamber 33. At the seed suction angle, the seed suction angle detection sensor 37 detects the pipe joint 25, and when the seed suction hole 24 reaches almost directly above the gel discharge mechanism (not shown), the seed supply angle detection sensor. 38 detects the pipe joint 25.

A control unit (not shown) reverses the rotation of the geared motor 35 in response to detection signals from the seed suction angle detection sensor 37 and the seed supply angle detection sensor 38, and the solenoid valve 27.
It is designed to support the switching operation of.

The operation of the seed supply mechanism of the seed coating processing apparatus configured as described above will be described with reference to the timing chart of FIG. When the operation switch (not shown) is pressed to start the automatic operation, the solenoid valve 27 is actuated, the pipe line 26 communicates with the negative pressure source 30 through the port 27c, and the air inside the pipe line 26 and the seed suction hole 24 is communicated. Is sucked. On the other hand, the geared motor 35 starts reverse rotation.

When the seed suction hole 24 of the seed suction body 20 comes into contact with the seed stored in the seed storage chamber 33 and sucks the seed, the inside of the pipe line 26 and the seed suction hole 24 becomes a predetermined negative pressure. Then, the suction pressure switch 40 is activated. When the seed suction body 20 reaches the suction angle, the seed suction angle sensor 37 is activated and the reverse rotation of the geared motor 35 is stopped.

Next, the geared motor 35 is rotated in the normal direction, the seed suction body 20 is rotated to the seed supply position while the seed suction hole 24 sucks the seed, and the seed supply angle sensor 38 is operated. When the rolling stops, the solenoid valve 27
Is activated and the pipeline 26 is connected to the pneumatic source 28 via the port 27a.
, The seed sucked into the seed suction hole 24 is discharged, and the seed is dropped and supplied to the gel discharging mechanism below.

When the suction pressure switch 40 is turned off and the supply of seeds is confirmed, the electromagnetic valve 27 is operated and the port 27b communicates the pipe line 26 with the outside air, and the pipe line 26 becomes atmospheric pressure. The geared motor 35 starts reverse rotation, and one cycle of the seed supply operation is completed. Then, the next seed supply operation is continuously performed.

The pipe line 26 follows the reciprocating rotation of the seed suction body 20 while repeatedly flexing and deforming. The range affected by the air pressure and the negative pressure is the seed suction hole 24 and the pipe line 26.
The seed suction body and the rotation shaft smoothly reciprocate without being affected by air pressure and negative pressure. Therefore, unlike the conventional seed suction mechanism, the problem that the rotation resistance of the drum is large and the rotation is lowered does not occur.

[0024]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the rotation of the drum smoothly rotates without being affected by air pressure or negative pressure, and the resistance of the rotation of the drum, which has been a problem in the past, has been improved. The problem that rotation is slowed down due to the large size has been resolved.

[Brief description of drawings]

FIG. 1 is a perspective view of a seed suction body.

FIG. 2 is a vertical sectional view of a seed suction body and a pneumatic circuit diagram connected to the seed suction body.

FIG. 3 is a side view of a main part of a seed supply mechanism.

FIG. 4 is a partially cutaway front view of a seed supply mechanism.

FIG. 5 is a time chart diagram for explaining the operation of the seed supply mechanism.

FIG. 6 is a schematic view showing a main part of a conventional seed coating processing apparatus.

[Explanation of symbols]

 20 seed suction body 21 rotary shaft 24 seed suction hole 25 pipe joint 26 pipe line 27 solenoid valve 28 air pressure source 30 negative pressure source 33 seed storage chamber 34 notch opening 35 geared motor 37 seed suction angle detection sensor 38 seed supply angle detection sensor 40 Suction pressure switch

Claims (1)

(57) [Scope of utility model registration request] 1. A seed suction body having a notch opening formed in one side of a seed accommodating chamber for accommodating seeds and having a rotating shaft rotatably supported by a bearing, the outer peripheral surface of which is in sliding contact with the notch opening. ,
A seed suction hole having a small diameter that opens to the outer peripheral surface is provided, and a pipe line communicating with the seed suction hole is connected to a negative pressure source via an electromagnetic valve and a pipe line communicating with an air pressure source, and the rotary shaft is connected. A seed suction angle detection sensor that is connected to a motor and detects that the seed suction body has rotated to a position where the seed suction hole comes into contact with the seed in the seed storage chamber, and the seed suction hole is arranged below. And provided with a seed supply angle detection sensor for detecting that the seed suction body has rotated until it reaches almost directly above the gel discharge mechanism, by the detection signal of the seed suction angle detection sensor and the seed supply angle detection sensor A seed supply mechanism of a seed coating processing apparatus, comprising a control unit for reversing the rotation of the motor and switching the solenoid valve.