JPH057018U - Seed feeder - Google Patents

Abstract

(57) [Abstract] [Purpose] A conventional seed feeding device is a hollow container, in which a large number of seeds are stored in a seed container and the hollow needle is sometimes inserted into the seed container to suck the seeds by inserting the seeds into the seed container. The seed was not sucked when the needle did not come into contact with the center of the seed, and the hollow needle had to be repeatedly inserted, resulting in low efficiency of the seed feeder. The present invention aims at facilitating suction of seeds into a hollow needle. [Configuration] A seed that is inserted into a seed container 5 together with the hollow needle 9 in the vicinity of the hollow needle 9 and has an inclination angle with respect to the insertion direction. The moving piece 27 is provided, the seed moving piece 27 to be inserted moves the seed S in the seed container 5, the moving seed S increases the chance of coming into contact with the tip of the hollow needle 9, and the number of times of reinserting the hollow needle is increased. Was reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seed supply device that automatically collects seeds from a large number of seeds stored in a seed container, conveys them to a supply position, and supplies them downward.

[0002]

[Prior Art]

 The seed supply device is used, for example, in a seed coating processing device. The seed coating processing device coats the seed with a gel containing nutrient substances and fungicides of the seed to protect the seed, and makes the seed spherical to a large diameter by the gel coating to facilitate sowing. This is a continuous device, and a seed feeding device is provided above the gel discharging device.

Then, the gel discharge device is opened to discharge the gel to form a gel film, and the seed is dropped and supplied from the seed supply device onto the hanging gel film, and the seed is coated with the gel film. The gel discharging device is closed to cut the seed-coated gel, and the gel is spheroidized, and then the surface is hardened. Therefore, the seed feeding device must continuously feed seeds at predetermined time intervals.

FIG. 3 shows a front view of the seed feeding device and a pneumatic circuit diagram thereof, in which a side wall 2 is provided on one side (right side in FIG. 3) of the gantry 1 and a vertically long ascent / descent on the other side. A guide member 3 is provided, an elevating table 4 is slidably provided on the guide member 3, and a seed container 5 is mounted on the elevating table 4. The seed container 5 is open at the top and contains a large number of seeds S therein (see FIG. 4).

A rotary actuator 6 is attached to the upper surface of the pedestal 1, and a rotary portion of the rotary reactor 6 can be reciprocally rotated within a range of 180 degrees, and a rotary support shaft 7 stands at the center of the rotary portion. The center of the rotating arm 8 is fixed to the rotating support shaft 7. Hollow needles 9 and 10 are attached to both ends of the rotating arm 8, and a pipe joint 11 fixed to the upper end of the hollow needle 9 and a pipe joint 12 fixed to the upper end of the hollow needle 10 are respectively provided. One end of the flexible conduits 13 and 14 such as a rubber hose is fixed.

An electromagnetic valve 15 is connected to the other end of the pipe line 13, and an electromagnetic valve 16 is connected to the other end of the pipe line 14, but the electromagnetic valves 15 and 16 have the same structure and are used similarly. The solenoid valve 15 will be described. The solenoid valve 15 switches between the pipeline 18 of the air pressure source 17 and the pipeline 20 of the negative pressure source 19, and therefore has ports 15a, 15b, 15c.

When the right port 15 a overlaps the pipeline 13, the pipeline 13 communicates with the negative pressure source 19, and when the central port 11 b overlaps the pipeline 13, the pipeline 13 is blocked, and the left side When the port 11c of 1) overlaps the pipeline 13, the pipeline 13 communicates with the air pressure source 17. The pipe line 13 is provided with a suction pressure switch 21 for detecting that the inside of the pipe line 13 has reached a predetermined negative pressure, and the pipe line 14 is also provided with a suction pressure switch 22.

Rotary switches 23 and 24 are provided in the vicinity of the rotary support shaft 7. The rotary switch 23 detects that one hollow needle 9 is positioned directly above the seed container 5, The rotary switch 24 detects that one hollow needle 9 is positioned directly above the gel ejection device 25.

The gel ejection device 25 is fixed to the side wall 2 of the gantry, and when the cylindrical gel cutting plunger 26 rises, the valve is opened to eject the gel and form a gel film. When it descends, the valve closes and the gel film is cut.

Next, the operation of the seed feeder will be described. In the state before the start of automatic operation, one hollow needle 9 is positioned at the seed feeding position above the seed container 5 as shown in FIG. The rotary switch 23 detects the position of one hollow needle 9. Since the port 15b of the solenoid valve 15 overlaps the pipe line 13 of the one hollow needle 9, the pipe line 13 is cut off from the pneumatic pressure source 17 and the negative pressure source 19.

Further, since the port 16 b of the solenoid valve 16 overlaps the pipe line 14 of the other hollow needle 10, the pipe line 14 is also cut off from the air pressure source 17 and the negative pressure source 19. It has been confirmed that the seed container 5 is in the lower limit by a lower limit switch (not shown).

When the automatic operation button of the control unit (not shown) is operated, the lift table 4 rises and reaches the upper limit, the solenoid valve 15 is activated by the detection signal of the ascending limit switch (not shown). Then, the port 15a overlaps the pipe line 13, and the pipe line 13 communicates with the negative pressure limit 19, so that the pressure becomes negative.

On the other hand, as the lift table 4 is raised, one hollow needle 9 is inserted into the seed S contained in the seed container 5, and the hollow needle 9 having a negative pressure sucks the seed S. To do. When the hollow needle 9 sucks the seed S, the inside of the pipe line 13 is closed so that the pressure decreases to a predetermined negative pressure, and the suction pressure switch 21 operates to confirm the suction of the seed S.

When a solenoid signal (not shown) for rotary rotation is activated by this confirmation signal, the rotary actuator 6 rotates about 180 degrees, and one hollow needle 9 comes directly above the gel ejection device 25. In addition, the rotary switch 23 detects the position of one hollow needle 9, the solenoid valve 15 operates, the port 15a overlaps with the pipe line 13, and the pipe line 13 communicates with the air pressure limit 17, so that one hollow The seed S sucked by the needle 9 falls downward.

While the above operation is performed again, the lifting table 4 is raised again, and the solenoid valve 16 is actuated so that the port 16c overlaps with the pipe line 14, so that the pipe line 14 communicates with the vacuum limit 19. The hollow needle 10 sucks the seed S, and the suction pressure switch 22 is activated to confirm the suction of the seed S.

The falling seed S is supplied on the gel film formed by opening the valve of the gel cutting plunger 25, is half-wrapped by the hanging gel film, is covered by the gel film supplied again, and is then cut by the gel. By closing the valve of the plunger 25, the gel film that coats the seed S falls, is made spherical during the fall, the surface is hardened in the lower hardening tank, and the hardening agent adhering to the surface is removed in the water washing tank. Is completed.

[0017]

[Problems to be solved by the device]

 As described above, in the seed feeding device, the seed feeding is automatically continuously performed by the sequence control of the control unit, but the lifting table 4 is raised and the hollow needles 9 and 10 are inserted into the seed container. When the tips of the hollow needles 9 and 10 come into contact with the center of the seed S, the seeds are sucked, but the tips of the hollow needles 9 and 10 are located between the seed S and the seed S. Occasionally, the hollow needles 9 and 10 do not suck the seed S.

When the hollow needles 9 and 10 do not suck the seed S, the next operation cannot be performed. Therefore, the vertical movement of the lifting table 4 is repeated about 5 times before the suction pressure switch confirms the suction of the seed S. However, there was a problem that a considerable amount of time was lost and the production capacity of seed coating processing declined. The present invention is intended to solve such a problem, and provides a seed supply device that surely sucks seeds with one rise of an elevating table.

[0019]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the seed feeding device of the present invention includes a pedestal having an elevating guide member, an elevating table slidably provided on the elevating guide member, and attached to the elevating table. A seed container for accommodating a large number of seeds; a rotary actuator that is attached to the gantry and has a rotating portion capable of reciprocating rotation; a rotating arm fixed to a rotating support shaft that is erected on the rotating portion; A hollow needle attached to the tip of the rotating arm; and a flexible conduit having one end communicating with the hollow needle and the other end communicating with an air pressure source and a negative pressure source via an electromagnetic valve. Stop at the seed suction position above the seed container, raise the lift table, operate the solenoid valve to communicate the pipe line with the negative pressure source, lower the lift table, and close the hollow needle. The sequencer that rotates to the seed discharge position and operates the solenoid valve to connect the pipe to the air pressure source. In the seed feeding device provided with a control unit for controlling the seeds, the tip of the seed is projected in substantially the same direction as the hollow needle, and a seed moving piece having a small inclination angle with respect to the raising and lowering direction of the seed container is provided on the rotating arm. It is characterized by being fixed.

[0020]

[Action]

 The operation of the seed feeder configured as described above is similar to that in the conventional example, after the hollow needle is positioned on the seed container, the elevating table is elevated along the elevating guide member to move the hollow needle and the hollow needle. The seed transfer piece is inserted into a large number of seeds contained in a seed container. Since the seed moving piece has a small inclination angle with respect to the vertical direction of the seed container, the inserted seed moving piece moves the seed laterally.

When the tip of the inserted hollow needle comes into contact with substantially the center of the seed, the seed is sucked as it is, but when the tip of the hollow needle does not come into contact with the substantially center of the seed, the laterally moving seed is moved into the hollow needle. Suction when it reaches the position where Therefore, the hollow needle makes it easier to suck seeds than in the past, and it is not necessary to move the lifting table up and down many times, and the time loss of seed suction is reduced.

[0022]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The present invention relates to an improvement of a conventional seed feeding device, in which some parts are added to the conventional seed feeding device. Therefore, the same parts as those of the conventional device are designated by the same reference numerals to simplify the description. FIG. 1 is a perspective view of an essential part showing the tip of the rotating arm 8, and FIG. 2 is a perspective view of the essential part showing a state in which the hollow needle 9 (or 10) and the seed moving piece 27 are inserted into the seed container 5. It is a figure.

As shown in FIG. 1, the seed moving piece 27 has a base portion 27a attached to the rotating arm 8 and an insertion portion 27b bent and extending from an end portion of the base portion 27a (see FIG. 1), the crossing angle between the base portion 27a and the insertion portion 27b is slightly acuter than 90 degrees, and the upper surfaces of both ends of the rotating arm 8 are formed substantially horizontally.

A base portion 27a is attached to the tip of the rotating arm, and the pipe joints 11 and 12 of the hollow needles 9 and 10 penetrate the rotating arm and the base portion 27a and are screwed into the pipe joints 11 and 12, respectively. At 29, the rotating arm and the base portion 27a are tightened. The seed moving piece 27 attached to the rotating arm 8 in this way is inclined in a direction in which the tip of the insertion portion 27b faces inward.

The other structure and operation of the seed supply device based on the sequence control are the same as those of the conventional seed supply device. In the seed feeding device configured as described above, after the hollow needle 9 is positioned on the seed container 5, the elevating table 4 is elevated along the elevating guide member 3, and the hollow needle 9 and the seed moving piece are moved. 27 is inserted into the large number of seeds S housed in the seed container 4. Since the seed moving piece 27 has a small inclination angle with respect to the raising and lowering direction of the seed container 5, the seed moving piece 27 inserted into the large number of seeds S moves the seed S laterally.

When the tip of the inserted hollow needle 9 comes into contact with the approximate center of the seed S, the seed S is sucked as it is, but when the tip of the hollow needle 9 does not come into contact with the approximate center of the seed S, it moves laterally. When the seed S reaches the position where it overlaps the hollow needle 9, it is sucked. Therefore, the hollow needle 9 becomes easier to suck the seed S than in the conventional case, and it is not necessary to move the lifting table 4 up and down many times as in the conventional case, and the time loss of seed suction is reduced.

[0027]

[Effect of the device]

 Since the present invention is configured as described above, in the conventional seed feeding device, it is necessary to move the elevating table up and down many times when the seed is not sucked, which causes a large time loss in seed suction. In the seed feeding device of the present invention, the seed moving piece moves the seed, and even if the tip does not abut the substantially center of the seed when the hollow needle is inserted, the moving seed almost has the hollow needle. Since it comes into contact with the tip of the seed, the chance of sucking the seed increases, the seed is sucked only by raising and lowering the lifting table once or twice, and the time loss of the seed sucking decreases, Seed supply capacity increased.

[Brief description of drawings]

FIG. 1 is a perspective view of a main portion showing a tip end portion of a rotating arm 8.

FIG. 2 is a perspective view of relevant parts showing a state in which a hollow needle and a seed moving piece are inserted into a seed container.

FIG. 3 is a front view of a seed supply device and a pneumatic circuit diagram thereof.

FIG. 4 is a perspective view of relevant parts showing a state in which a hollow needle of a conventional seed feeding device is inserted into a seed container.

[Explanation of symbols]

 S seed 1 mount 3 lifting guide member 4 lifting stand 5 seed container 6 rotary actuator 7 turning spindle 8 turning arm 9,10 hollow needle 11,12 pipe joint 13,14 pipe line 15,16 solenoid valve 17 pneumatic source 19 Negative pressure source 21,22 Suction pressure switch 23,24 Rotary switch 25 Gel ejection device 27 Seed moving piece 27a Base portion 27b Insertion portion

Claims (1)

[Claims for utility model registration] 1. A pedestal having an elevating guide member, an elevating table slidably provided on the elevating guide member, and a seed mounted on the elevating table and accommodating a large number of seeds. A container, a rotary actuator that is attached to the gantry and has a rotating portion that can reciprocally rotate, a rotating arm that is fixed to a rotating support shaft that is erected on the rotating portion, and a tip portion of the rotating arm. A hollow needle attached to the hollow needle, and a flexible conduit having one end communicating with the hollow needle and the other end communicating with an air pressure source and a negative pressure source via a solenoid valve,
Stop the hollow needle at the seed suction position above the seed container,
Raise the lift table, operate the solenoid valve to communicate the pipeline with a negative pressure source, lower the lift table, rotate the hollow needle to the seed discharging position, operate the solenoid valve. In the seed feeding device provided with a control unit for performing sequence control for communicating the pipe line with the pneumatic source, the tip projects in substantially the same direction as the hollow needle, and a small inclination angle with respect to the vertical direction of the seed container. A seed feeding device, wherein a seed moving piece having the above is fixed to the rotating arm.