JP3073895B2 - Seeding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sowing a row of seedlings in a posture perpendicular to the feeding direction of a conveyor with respect to the floor surface of a seedling incubator fed by a conveyor at predetermined intervals in the feeding direction of the conveyor. The present invention relates to improvement of a sowing apparatus.

[0002]

2. Description of the Related Art There is a sowing apparatus constructed as described above as disclosed in Japanese Patent Application Laid-Open No. 4-304806. In this conventional example, a reciprocating engaging claw is engaged with a pot portion of a cell tray. A seedling raising box (seedling device) is intermittently fed so that seeds are seeded at respective pot portions.

[0003]

In this prior art, the seed drop openings are formed in a row in a direction perpendicular to the conveying direction of the seedling raising device, and a chute for guiding the seeds from the seed drop port to the pot portion. Are arranged in two rows in the conveying direction of the seedling raising device, so that the seeds are supplied to the two rows of pot portions each time the seeding operation is performed so that the efficiency can be improved.

However, in this conventional example, as shown in the drawing, a shoot for supplying seeds is formed linearly on the lower side of the seedling incubator, and a shoot for supplying seeds is formed in a curved shape on the upper side of the seedling. Therefore, the seeds supplied to the pot with a straight chute fall at high speed in a free state,
In some cases, it jumped up on the floor and jumped out of the pot. Further, in this conventional example, since there is a difference in the length to the lower end position of each shoot with reference to the seed dropping port, a time lag occurs in the timing of dropping the seeds supplied to the two rows of pots at the time of sowing. The interval for intermittently feeding the container needs to be increased, leading to a decrease in the transport speed.

An object of the present invention is to prevent seeds from jumping out of a sowing position at the time of sowing without impairing a favorable aspect of supplying seeds to a plurality of rows each time a sowing operation is performed, and to transport a seedling incubator. It is an aspect of the present invention to configure a sowing device that increases the speed and enables efficient sowing work.

[0006]

The feature of the present invention is that, as described at the beginning, the seeding in a row in a posture perpendicular to the feeding direction of the conveyor with respect to the soil surface of the seedling growing plant fed by the conveyor is carried out. In the seeding device performed at predetermined intervals in the feeding direction, the seeding device, a seed storage unit, and a takeout unit that takes out the seeds from the storage unit in a single row in a direction orthogonal to the feeding direction of the conveyor, A guide in which a plurality of openings are formed at predetermined intervals in the feed direction of the conveyor with openings for feeding seeds in a row in a direction perpendicular to the feed direction of the conveyor with respect to the floor soil surface, and the seeds from the take-out unit are It consists of a plurality of tubes that guide the seeds to the openings of the guides by falling due to their own weight, and the guide path length of each of the tubes is set to be uniform. Is next It is as.

[0007]

According to the above-mentioned feature, at the time of sowing, seeds from the take-out section are guided to a plurality of openings through paths inside the tubes of the same length, and the seeds are transported to the seedling incubator at the same timing. It is supplied to the seedling raising device in a plurality of rows in an orthogonal posture. Also, in this configuration, seeds from the take-out unit at a fixed position are dropped and supplied to positions forming a plurality of rows via tubes having the same guide path length, so that each tube is based on a straight line in a vertical posture. When the seed is dropped and supplied from the take-out part, the seed inevitably comes into contact with the inner surface of the tube to reduce the falling speed when the seed is dropped and supplied from the take-out part.

That is, in the present invention, while seeds are supplied to a plurality of rows during one sowing operation, the falling speed of the seeds supplied to the floor soil surface is reduced to allow the seeds to jump up on the floor soil surface. And the time lag of sowing to each sowing position can be reduced.

[0009]

Therefore, it is possible to prevent the seeds from jumping out of the sowing position at the time of sowing without impairing the favorable aspect that the seeds are supplied to a plurality of rows each time the sowing operation is performed, and the transport speed of the seedling incubator. Thus, a sowing apparatus was constructed which enabled high efficiency of sowing work.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, a roller type conveyor B for feeding a seedling raising device A, a floor soil supply section C for supplying floor soil to the seedling raising device A sent by the conveyor B, and a seedling raising device A are supplied. Seeding section D for sowing seeds at a set interval in the feed direction of conveyor B with respect to the soil floor, cover soil supply section E for supplying soil to the top surface of the seed soil, and water spraying on the top surface of the soil cover The irrigation units F to be supplied are sequentially arranged in the feed direction of the conveyor B to form a seeding device for vegetables and flowers.

The seedling raising device A includes a seedling raising box 1 and the seedling raising box 1.
The tray 2 has eight pot portions 2A # recessed in the horizontal direction and 16 in the vertical direction (see FIG. 9). The conveyor B is disposed in the floor feeding section C and is continuously driven by the first electric motor M1. The floor feeding section conveyor 3 is disposed in the seeding section D. Placed in part E, the second
A soil covering unit conveyor 5 driven by an electric motor M2,
And a watering unit conveyor 6 which is arranged in the watering unit F and driven by the second electric motor.

In this seeding apparatus, the bed soil is continuously supplied from the bed soil supply mechanism 7 to the seedling raising device A sent while being placed on the continuously driven floor soil supply section conveyor 3, and then a plurality of pressure reductions are performed. Roller 8 and a plurality of rotating brushes 9 level the floor soil surface,
The floor soil at the position of the pot portion 2A of the tray 2 is recessed and formed by the molding roller 10, and the processing in the floor soil supply section C is completed. Next, in the sowing part D, the seedling raising device A is sent in an intermittent operation pattern in which the feeding distance is twice as long as the pot portion 2A of the tray 2 and is stopped for a predetermined time. The seeding mechanism 11 performs seeding every two rows, and ends the processing in the seeding part D. Next, the seedling incubator A, for which the seeding treatment has been completed,
The soil from the soil covering mechanism 12 is supplied at a uniform thickness to the upper surface of the floor soil while being sent to the continuously driven earth covering supply unit conveyor 5 while being placed, and the processing in the soil covering supply unit E is completed. The water is sprayed from the watering mechanism 13 onto the upper surface of the seedling incubator A sent by the watering unit conveyor 6 to terminate the processing in the watering unit F, thereby completing the processing in the seeding apparatus. I have.

As shown in FIGS. 2 and 3, each of the conveyors 3, 5, and 6 has left and right frames 14, 1 constituting a frame.
4 and a pair of rollers 16, 1 with respect to the support shaft 15
6, the floor soil supply unit conveyor 3, the cover material supply unit conveyor 5, and the watering unit conveyor 6 are each driven synchronously by a chain 18 wound around a sprocket 17 provided at the end of the support shaft 15. The first and second shafts 15
The power from the electric motors M1 and M2 is transmitted via the chain 19.

As shown in FIGS. 4, 9 and 10, the seeding section conveyor 4 has a pair of rollers 16 and 16 integrally formed with a support shaft 15 rotatably supported by left and right frames 14 and 14, respectively. In the sowing part D, the tray 2 is placed for the purpose of suppressing the disturbance of the posture of the seedling incubator A and the purpose of suppressing the movement caused by the dynamic inertia when the action of the feeding force described later is released. It has a guide plate 20 that contacts the side surface of the seedling raising box 1 and a brake mechanism G that contacts the other side surface of the seedling raising box 1 to apply a braking force. The brake mechanism G is connected to the support plate 2 fixed to the frame 14.
1 has a cantilevered spring plate-made braking piece 22 and an adjusting screw 23 for determining the position of the free end of the braking piece 22. The amount of protrusion can be changed to adjust the braking force.

As shown in FIGS. 8 (a), 8 (b) and 8 (c), a rod 24 in a posture parallel to the feeding direction of the seedling incubator A is supported on the guide plate 20 of the seeding part D via a support 25. The engaging pawl is slidably supported in the axial direction, and is swingable around the lateral axis with respect to the rod 24 via a bracket 26, and the swinging end side is spring-biased downward. An intermediate member 28 that supports the rod 27 and is connected to the rod 24 and a rotating disk 29 are connected via an arm 30 to form a transport unit of the seeding mechanism 11. The transfer means is a rod 24 by one rotation of the rotating disk 29.
In one reciprocating operation, the engaging claw 27 is moved to the pot portion 2 of the tray 2.
A, the seedling incubator A is fed by a distance corresponding to two pots, and then the engaging claws 27 are released upward against the urging force of the spring so that the engaging claws 27 slide on the upper surface of the tray 2. Perform the operation of restoring to the original position with. As shown in FIG. 5, when the engaging claw 27 is restored, the tip of the engaging claw 27 and the pot with which the engaging claw 27 is next engaged with the seedling incubator A as shown in FIG. The feeding operation is set so that a gap H is formed between the opening 2A and the opening of the portion 2A.

As shown in FIGS. 11 (a), (b) and FIG. 12, a seed tray 31 serving as a storage portion disposed over the entire width of the left and right frames 14, and seeds stored in the seed tray 31 are provided. A suction blade 32 for taking out S by suction under a negative pressure, a guide member 33 as a take-out unit to which seeds S are supplied from the suction blade 32, and a guide member 3
A plurality of tubes 34 made of a transparent resin and sending the seeds S from the bottom downward, and the seeds S from the tubes 34
A guide 35 for feeding the pot 2A of the tray 2 of the seedling raising device A one by one constitutes a sowing means of the sowing mechanism 11. In addition, a vacuum pump 36 for generating a negative pressure is provided at a position below the mount of the seeding part D, and an electric motor 37 for driving the conveying means and the seeding means is provided above the seeding part D.

The suction blade 32 includes left and right frame bodies 38.
1 is rotatably supported around a horizontal axis X, and 16 suction holes 32A are formed at the tip thereof.
As shown in FIG. 1 (a), when taking out the seed S, the suction blade 3 is set to a take-out posture by rotating around the axis X.
By setting the inside of the suction holes 32A of each of the two to a negative pressure, one seed S is adsorbed to each of the suction holes 32A.
As shown in (b), at the time of release, the seed S is dropped and released by its own weight by setting the release position by rotation around the axis X and increasing the pressure in the suction hole 32A to atmospheric pressure.
Further, a mechanism (not shown) for rotating the suction blade 32 is provided outside the frame body 38 supporting the suction blade 32, and a suction path formed coaxially with the suction hole 32A and the rotation axis. The vacuum pump 36 and the pipe 39 are connected to each other via a suction tube 40 and a control valve (not shown) so that a negative pressure is applied to the pipe 39 communicating with the pipe 32B.

The guide member 33 is connected to the suction blade 32
16 openings 33 in the upper surface position corresponding to the suction holes 32A
A is formed, and the guide 35 is formed with two rows of eight outlets 35A in the horizontal direction at the upper surface position corresponding to the pot portion 2A of the tray 2, and the conveyance of the seedling incubator A is provided on the lower surface of the guide 35. A sliding plate 35B, which is formed by bending both ends in the direction upward in a sled shape, is screwed, and two adjacent openings 33A of the guide member 33 and two guides 35 adjacent to each other in the feeding direction of the seedling incubator A. As shown in FIG. 11 and FIG. 12, the delivery port 35A is communicated with the tube 34 having the same guide path length. Further, the upper end of a suspension rod 41 that supports the side of the guide 35 is inserted into a hole 38A that is bored vertically in a bent piece at the lower part of the frame body 38, and screwed into the suspension rod 41. The vertical position of the guide 35 is set by the lock nut 42.

When a lifting force is applied to the guide 35 by sliding contact of the slide plate 35B with the upper surface of the tray 2, the suspension rod 41 is inserted through the hole 38A of the frame 38. The guide 3 is displaced upward in the state
5 is configured to be allowed to move upward, and
Although not shown in the drawings, the gap between the lower surface of the sliding contact plate 35B and the upper surface of the tray 2 during proper work is adjusted to 0.1 to 0.3 mm by adjusting the screwing position of the lock nut 42. 35 suspension levels are set.

As shown in FIG. 6, a conveyor at the rearmost end of the floor soil supply unit 3 is disposed immediately below the molding roller 10, and when the seedling raising device A is transported, the feeding force of the conveyor 3 is released. The seedling raising device A stops at the set position, and the position of the engaging claw 27 at the rear end position is determined so as to engage with the pot portion 2A at the tip position of the seedling raising device A at this position. As shown in FIG. 7, the seeding treatment is completed, and the feeding force from the covering material supply unit conveyor 5 acts on the tip of the seedling raising device A at the position where the engaging claw 27 comes into contact with the rear end and is pushed out. Each relative position is determined.

With this configuration, the seeding part D
, The engaging claw 27 is engaged with the pot portion 2A of the tray 2 to feed the seedling incubator A, and when the engagement is released, the movement due to the dynamic inertia is prevented by the braking force of the brake mechanism G. The seeding is stopped at an appropriate sowing position and seeding can be performed while maintaining the relative position between the seeding position and the pot portion 2A at an appropriate level. At the time of sowing, the suction blade 32 is set to the take-out posture and the seed S is adsorbed and released. By switching the posture and discharging the seeds S to the opening 33A of the guide member 33,
Each seed S is dropped from the guide member 33 by a tube 34 of equal length while receiving resistance and guided to the guide 35, and at the same timing and at an appropriate speed at which rebound is suppressed, the pot portion 2A. It is sent to the floor of the ground.

[Alternative Embodiment] The present invention is not limited to the above-described embodiment.
For example, the seeding system can be configured to supply seeds to three or more rows in a direction orthogonal to the transport direction of the seedling raising device, and the tube is formed of a hard member such as an acrylic resin. It is also possible to configure the seedling raising device only with a tray having a plurality of pot portions.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a sowing apparatus.

FIG. 2 is a longitudinal sectional view of a floor soil supply unit conveyor.

FIG. 3 is a vertical cross-sectional view of a soil supply section conveyor and an irrigation section conveyor.

FIG. 4 is a longitudinal sectional view of a seeding section conveyor.

FIG. 5 is a longitudinal side view showing a relative relationship with an engaging claw of a seedling raising device.

FIG. 6 is a side view schematically showing a delivery structure of a seedling raising device from a floor soil supply unit to a seeding unit.

FIG. 7 is a side view showing an outline of a delivery structure of a seedling incubator from a seeding unit to a soil covering supply unit.

FIG. 8A is a longitudinal side view showing a relative position with the seedling incubator at the position where the engaging claw has been restored. FIG. 8B is a longitudinal side view in the middle of feeding the seedling incubator with the engaging claw. Longitudinal side view immediately after sending the seedling raising device with the engaging claw

FIG. 9 is a plan view showing an arrangement of a brake mechanism.

FIG. 10 is an enlarged sectional view of a brake mechanism.

11A is a longitudinal side view of the seeding system in which the suction blade is set to the take-out position, and FIG. 11B is a longitudinal side view of the seeding system in which the suction blade is set to the discharge position.

FIG. 12 is a vertical cross-sectional view of a sowing part.

[Explanation of symbols]

 31 Storage part 33 Extraction part 34 Tube 35 Guide 35A Opening A Seedling incubator S Seed

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01C 7/08 320 A01C 7/20

Claims (1)

(57) [Claims] 1. A seeding apparatus for sowing a row of seedlings in a posture perpendicular to a feeding direction of a conveyor with a predetermined interval in a feeding direction of the conveyor on a floor soil surface of a seedling raising device (A) sent by a conveyor. The seeding device is provided with a storage unit (31) for seeds (S), and a take-out unit (33) for taking out the seeds from the storage unit (31) in a single row in a direction perpendicular to the feeding direction of the conveyor. A guide (35) in which a plurality of openings (35A) for sending out seeds (S) in a row in a direction perpendicular to the feeding direction of the conveyor with respect to the floor soil surface are formed at predetermined intervals in the feeding direction of the conveyor. ) And a plurality of tubes (34) for guiding the seeds (S) from the take-out part (31) to the openings (35A) of the respective guides (35) by dropping the seeds (S) by their own weight. As well as each of these tubes (34) Sowing devices have set a guidance route length uniform.