JP2582516Y2 - Seeding machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sowing machine and, more particularly, to a sowing machine for sowing seeds such as vegetables on a tray provided with a large number of pots while sowing the trays.

[0002]

2. Description of the Related Art Conventionally, this seed sowing machine comprises a conveyor for transporting a tray provided with a plurality of pots, and a seeding unit having a seeding roll for seeding each pot of the tray transported by the conveyor. On the outer periphery of the conveyor, a large number of locking portions for positioning are provided at regular intervals for each mounting position of the tray, and the seeding roll is connected to the drive system of the conveyor so as to be able to rotate interlockingly via a chain transmission mechanism, The sowing roll is sowed in each pot of a tray placed at a fixed position on the conveyor and continuously conveyed by the conveyor.

[0003]

However, according to the above-described sowing machine, the seed is sowed by continuously rotating the sowing roll on each tray continuously conveyed by the conveyor. Therefore, there is no problem when the trays are transported to the conveyor without interruption, but when each tray is transported intermittently, that is, when the trays are transported with an interval between the trays, the tray from the seeded tray to the subsequent tray During the transition to the above, the seeds are sown within the interval, and as a result, there is a problem that the seeds are wasted and uneconomical.

An object of the present invention is to intermittently rotate a seeding roll only when a tray passes through a seeding part, to prevent seeds from being excessively seeded, and to provide a complicated detection mechanism. An object of the present invention is to provide a sowing machine that can improve sowing accuracy without providing a large number.

[0005]

According to the present invention, in order to achieve the above object, a transport unit 1 for transporting a tray A having a plurality of pots P and a tray A transported by the transport unit 1 are provided. And a sowing unit 2 sowed in the pot P.
Has a drive unit 7 and includes a sowing roll 6 driven by power transmission from the driving unit 7, and a tray detector X <b> 1 that detects the tray A on the near side of the sowing roll 6 in the tray transport direction. In addition, a one-rotation detector X2 for detecting one rotation of the drive unit 7 is provided, while the tray detector X1 is provided.
And a sowing roll drive control circuit 20 that drives the drive unit 7 with a certain time delay when tray detection is performed and stops when the one-rotation detector X2 detects one rotation of the drive unit 7.

[0006]

With the above configuration, the tray A to be transported by the transport unit 1
When the sheet passes through the seeding unit 2, the tray detector X1 detects the tray A on the near side of the seeding roll 6 in the tray transport direction.
Is detected, and the drive unit 7 is driven with a certain time delay at the time of tray detection by the tray detector X1, and by the drive of the drive unit 7 with the certain time delay, the seeding timing by the sowing roll 6 The seeds can be sown in accordance with the timing when the pot P in the front row passes through the sowing unit 2,
In addition, the detection of one rotation of the driving unit 7 by the one rotation detector X2 detects the passage of the tray A through the seeding unit 2 and stops the driving unit 7 and stops the rotation of the seeding roll 6. Therefore, the seeding roll 6 can be intermittently rotated and sown only when the tray A conveyed by the conveyance unit 1 passes through the sowing unit 2, so that the seeds are sown extra. In addition, it is possible to improve seeding accuracy without using many detection mechanisms, while preventing the occurrence of the problem.

[0007]

FIG. 6 shows a rectangular tray A equipped with a seeding machine according to the present invention and provided with a plurality of pots P for growing vegetables and the like in rows and columns. 1 shows the entire structure of a seeding apparatus that performs seeding work and soil covering work consistently, and the seeding apparatus is provided with the tray A
Conveyor B that sequentially conveys the
A bed filling device C for filling the bed soil into the tray A;
A drilling device D that presses the floor soil filled in the tray A to form a seeding hole, a watering device E that sprays water on the floor soil where the seeding hole is formed, and seeds on the watered floor soil. , A soil covering device G for covering the soil on which the seeds are sown, and a watering device H for spraying water on the soil. Then, the inside of the tray A conveyed by the conveyor B is first filled with the floor soil by the floor soil filling device C,
After forming a seeding hole in the floor soil by the drilling device D,
Sprinkling water on the floor soil in which the seeding holes are formed with the watering device E, sowing seeds with the sowing machine F on the watered floor soil,
Next, soil is covered with the soil covering device G on the floor soil on which the seeds are sown, and water is sprayed on the soil with the water spray device H.

[0008] Thus, the seeding machine F of the present invention incorporated in the seeding apparatus as described above comprises the transport conveyor B for continuously transporting the tray A at a constant speed, as shown in FIGS. It comprises a transport section 1 and a sowing section 2 for sowing each pot P of a tray A transported by the transport section 1. The sowing section 2 includes a pair of side walls 3a and 3b formed by a front wall 3c and a rear wall 3d.
Upper and lower openings 4a,
A seed hopper 4 having a seeding hopper 4b is provided, and a seeding roll 6 is rotatably supported at a lower position of a lower opening 4b of the seed hopper 4 via a rotating shaft 5; A drive motor 7 with a brake device is provided in the machine frame 3. A distal end of a drive shaft 7a of the drive motor 7 projects outward through the side wall 3a, and a drive pulley 9 is provided at the projected distal end, while one end of the rotary shaft 5 is connected to the side wall 3a. Through and project outward,
A driven pulley 10 is provided at the projecting portion, and a transmission belt 11 is interposed between the pulleys 9 and 10 to rotate the seeding roll 6 via a belt transmission mechanism by driving the motor 7. The rotation speed of the outer periphery of the seeding roll 6 by the motor 7 and the transfer speed of the tray A by the transfer unit 1 are set to be substantially the same speed, and one rotation of the drive shaft 7a, that is, one rotation of the drive pulley 9 The rotation amount of the seeding roll 6 due to rotation is set to the same rotation amount as the length of the tray A.

The seeding roll 6 is provided with a large number of seed recesses 6a on its outer peripheral surface so as to correspond to the arrangement of the pots P provided on the tray A. That is, the number of seed recesses 6a in the circumferential direction and the width direction of the outer peripheral surface of the seeding roll 6 is the same as the number of the pots P in the tray A in the length direction and the width direction, and The recessed holes 6a are arranged in rows at the same pitch in the circumferential direction and the width direction as the pitch in the length direction and the width direction of each pot P.
A guide plate 8 is provided on the rotation direction front side of the seeding roll 6, and the seeds that have entered the recessed holes 6 a are guided by the guide plate 8 and transported to the lowest seeding position. The seeds are sown in each pot P of the tray A passing below. At the bottom of the hopper 4, there is provided a brush 41 for uniformizing the seeds in the recessed holes 6a with the rotation of the seeding roll 6.

On the side of the side wall 3a of the machine frame 3, the tray A
A tray detector X1 mainly composed of a limit switch for detecting the
While one rotation detector X2 for detecting one rotation of a is provided,
A seeding roll drive control circuit 20 is provided, which drives the drive motor 7 with a certain time delay at the time of tray detection by the tray detector X1 and stops when the one-rotation detector X2 detects one rotation of the drive shaft 7a.

In the embodiment shown in FIG. 1, the tray A is mounted on the seedling box a and is transported together with the seedling box a by the transport section 1. Therefore, as shown in FIGS. Tray A is detected by contact of X1 with the side of seedling box a. In addition, the one-turn detector X2 includes:
As shown in FIGS. 1 and 2, a protruding body 12 provided on the outer periphery of the distal end portion of the drive shaft 7 a via a cylindrical shaft 7 b, and supported on the outside of the side wall 3 a of the machine frame 3, and the rotational movement of the protruding body 12 When the contact piece 13a of the limit switch 13 is pushed down by the protruding body 12 as shown by the solid line in FIGS. 1 and 3, the limit switch 13 When the drive motor 7 is turned off and the drive motor 7 is stopped, the protrusion 11 rotates and the limit switch 13 is turned on when the contact piece 13a is positioned above as shown by the phantom line in FIG. 7 is driven.

The above-described seeding roll drive control circuit 20 has a configuration shown in FIG.
As shown in the figure, a tray detection circuit 21 for connecting a tray detector X1 and a relay R1 in series to a power supply circuit, a normally open contact R1-1 of the relay R1 and a timer T are connected in series, and A timer circuit 2 in which a relay circuit 23 in which a timer contact T-1 and a relay R2 are connected in series and the relay R23 is connected in parallel after a predetermined time has elapsed by the ON operation of the timer T is connected.
2, one rotation detector X2 and relay R3 are connected in series,
A one-turn detection circuit 24 in which the normally open contacts R2-1 of the relay R2 are connected in parallel, and a normally open contact R3-1 of the relay R3.
Motor control circuit 25 in which motor and drive motor 7 are connected in series
And are connected in parallel.

In the above embodiment, the one-turn detector X2
Has been described on the drive shaft 7a of the drive motor 7, but the mounting position of the one-rotation detector X2 is not limited to the drive shaft 7a. The tray A having the same length as that of the tray A may be provided on the drive shaft from the drive motor 7 to the seeding roll 6 and provided on the rotating shaft 5 of the seeding roll 6 constituting a part of the driving unit.

Next, the operation when seeds are seeded in each pot P of the tray A conveyed by the conveying unit 1 by the sowing machine constructed as described above according to the present invention will be described.

First, the bed soil is filled by the bed soil filling device C, and then, a seeding hole is formed in the floor soil by the drilling device D. , And is continuously transported to the seeding unit 2 at a constant speed. When the tray A passes through the seeding unit 2, the seedling box a of the tray A comes into contact with the tray detector X1 on the near side in the tray transport direction of the sowing roll 6, and the tray detector X1 is brought into contact with the seedling box a. The tray A is detected by performing the ON operation. By this detection, the tray detector X1 in the tray detection circuit 21
Is closed, the relay R1 is excited, and the normally open contact R1-1 of the relay R1 is closed. As a result, after the timer T is turned on and a predetermined time T1 has elapsed, the normally open contact T-1 of the timer of the relay circuit 23 is closed, the relay R2 is excited, and the relay R2 is turned on.
The normally open contact R2-1 is closed. This relay contact R2-1
, The one-turn detection circuit 24 is closed, the relay R3 is excited, the relay contact R3-1 is closed, and the drive motor 7 is driven. By driving the drive motor 7 with a certain time delay after the detection of the tray A, the seed sowing timing by the rotation of the sowing roll 6 is adjusted so that the pot P in the front row of the tray A is in the sowing position. The drive is started accurately in accordance with the timing of the position.

The driving of the driving motor 7 causes
The seeding roll 6 is rotated at substantially the same speed as the transfer speed of the tray A by the transfer unit 1, so that the seeding is performed from the seed recess 6 a of the seeding roll 6 and each of the trays A transferred by the transfer unit 1. The seed is accurately sowed while matching the timing when the pot P passes the sowing position.

On the other hand, when the drive shaft 7a of the drive motor 7 rotates, the protruding body 11 provided at the tip of the drive shaft 7a rotates.
The rotation detection circuit 24 is closed, so that the tray A passes the position of the tray detector X1, and the detection of the tray A by the tray detector X1 is stopped.
Is turned off, that is, the tray detector X1 of the tray detection circuit 21 is opened, the relay R1 is demagnetized, and the relay contact R1-1 of the relay R1 is opened. Even if the contact T-1 is opened and the relay 2 is demagnetized and the relay contact R2-1 is opened, the one-rotation detector X2 maintains the ON operation.
The drive motor 7, that is, the seeding roll 6, continuously rotates.

When the rotation of the drive shaft 7a advances and the protruding body 11 makes one rotation and reaches the one-turn detector X2,
The detector X2 is turned off.
The rotation detector X2 of the rotation detection circuit 24 opens, and the relay R
3 is demagnetized, the relay contact R3-1 of the relay R3 is opened, and the drive motor 7 is stopped.

In this case, the amount of rotation of the seeding roll 6 by one rotation of the drive shaft 7a is set to the same rotation amount as the length of the tray A, and the outer peripheral surface of the seeding roll 6 In accordance with each pot P provided in the tray A, the same number of seed recess holes 6a as the number in the width direction and the length direction of each pot P are arranged at predetermined intervals in the width direction and the circumferential direction. Therefore, when the drive shaft 7a makes one rotation, the seeding to all the pots P in one tray A that has passed is completed.

The seeding roll 6 is stopped until the subsequent tray A is conveyed, and the apparatus stands by. When the subsequent tray A is conveyed to the seeding unit, this is detected by the tray detector X1. The detection is performed and the seeding operation similar to the above-described seeding operation is repeatedly performed.

As a result, only when the tray A conveyed by the conveyance section 1 passes through the sowing section 2, the sowing roll 6 rotates intermittently to sow the seeds. Can be prevented and economic efficiency can be improved.
In addition, the control of the seeding roll 6 can be accurately performed only by using the tray detector X1 and the one-rotation detector X2 alone, and the seeding accuracy can be improved without providing a large number of detection mechanisms.

Further, in the above embodiment, the seeding machine F used in the seeding apparatus in which the tray A is filled with floor soil, drilling work, sowing work, soil covering work and the like are performed consistently. Although described, it is a matter of course that the seeding machine may perform only the seeding operation independently of the filling device or the drilling device.

[0023]

As described above, according to the present invention, the transport unit 1 for transporting the tray A provided with the plurality of pots P, and the sowing unit 2 for sowing each pot P of the tray A transported by the transport unit 1 The seeding unit 2 has a driving unit 7 and includes a seeding roll 6 driven by power transmission from the driving unit 7.
A tray detector X1 for detecting the tray A and a one-rotation detector X2 for detecting one rotation of the driving unit 7 are provided on the near side of the seeding roll 6 in the tray transport direction, while the tray detector X1 is provided. The seedling roll drive control circuit 20 that drives the drive unit 7 with a certain time delay when detecting the tray by the above, and stops when the one-rotation detector X2 detects one rotation of the drive unit 7. Part 1
When the tray A to be transported passes through the seeding unit 2, the tray detector X1 detects the tray A on the near side in the tray transport direction of the seeding roll 6, and the tray detector X1 delays the tray detection by a certain time. Then, the driving unit 7 is driven, and by the driving of the driving unit 7 with the delay of the certain time, the seeding timing by the seeding roll 6 is matched with the timing at which the pot P in the front row of the tray A passes through the seeding unit 2 to accurately. Seeding can be started, and the detection of one rotation of the driving unit 7 by the one-rotation detector X2 detects the passage of the tray A through the seeding unit 2 and stops the driving unit 7, The rotation of the seeding roll 6 can be stopped. Therefore, the seeding is performed by intermittently rotating the seeding roll 6 only when the tray A transported by the transporting unit 1 passes through the seeding unit 2. Therefore, it is possible to prevent the seeds from being excessively sown, thereby improving economical efficiency. In controlling the sowing roll 6, the tray detector X1 for detecting the tray A and one rotation of the drive shaft 7a , It is only necessary to use the one-rotation detector X2 for detecting, so that the seeding accuracy can be improved without using many complicated detection mechanisms.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a seeder according to the present invention.

FIG. 2 is a perspective view of a main part of the seeder.

FIG. 3 is an explanatory diagram of the operation of the first rotation detector.

FIG. 4 is an explanatory diagram of a sowing roll drive control circuit.

FIG. 5 is an explanatory view showing an operation state of a seeding roll.

FIG. 6 is a schematic diagram showing the overall structure of a seeding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying part 2 Seeding part 6 Seeding roll 7 Driving part 20 Roll drive control circuit X1 Tray detector X2 One rotation detector A Tray P Pot part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-210908 (JP, A) JP-A-62-118831 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01C 7/00-7/18

Claims (1)

(57) [Scope of request for utility model registration] 1. A transport section 1 for transporting a tray A having a plurality of pots P, and a sowing section 2 for seeding each pot P of the tray A transported by the transport section 1, wherein the sowing section 2 ,
A sowing roll 6 having a driving unit 7 and driven by power transmission from the driving unit 7, and a tray detector X <b> 1 for detecting the tray A in front of the sowing roll 6 in the tray conveyance direction.
And a one-rotation detector X2 for detecting one rotation of the driving unit 7 is provided, and the driving unit 7 is driven with a certain time delay at the time of tray detection by the tray detector X1,
A seeding machine, comprising: a seeding roll drive control circuit 20 that stops when the one-turn detector X2 detects one rotation of the drive unit 7.