JP2002084819A - Sowing unit for growing seedling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sowing unit capable of forming sowing holes on the surface of soil of a seedling-growing box accurately and deeply and enabling the conveyance of the seedling growing box in a normal state. SOLUTION: This sowing unit has a conveying mechanism 3 for conveying the seedling-growing box 12 filled with the soil, a pattern-forming mechanism 6 for forming many sowing holes on the upper surface of the soil of the seedling-growing box under conveyance and a sowing mechanism 7 for supplying seeds N by falling them to the above many sowing holes 22. The above pattern- forming mechanism 6 is equipped with a coarse roll 20 having course projections 20A for forming coarse holes on the soil and a finishing roll 21 having finishing projections 21A for finishing the coarse holes formed by the coarse roll 20 as freely rotatable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling apparatus for raising seedlings, using a seedling box having a vertically and horizontally partitioned inside, for producing pot seedlings such as onions, lettuce, cabbage, broccoli, and Chinese cabbage. It is about.

[0002]

2. Description of the Related Art A conventional seeding apparatus for raising seedlings for pot seedlings is disclosed in Japanese Patent Application Laid-Open No. 9-275715. In this method, floor soil is supplied to a cell tray inserted into an outer box, and a single molding roller having a large number of projections is pressed against the surface of the floor soil, sowing holes corresponding to each pot portion of the cell tray. Is formed.

[0003]

In the above-mentioned prior art, since a single molding roller is used to form a seed hole having a required shape at one time, a seeding hole having a precise shape, a deep seeding hole and the like are not formed. It is difficult to do. Further, when the cell tray is pressed by the projection of the molding roller, the cell tray may be deformed or the front / rear position may be shifted. An object of the present invention is to provide a seedling raising sowing apparatus that can solve such problems of the conventional technology.

According to the present invention, a seed roller is formed accurately and deeply on the floor soil surface by using a rough roller and a finishing roller in combination with a molding roller, forming a coarse seed hole with a rough projection, and then finishing with a finishing projection. It is an object of the present invention to provide a seedling raising seeding apparatus capable of transporting a seedling raising box in a normal state.

[0005]

The first concrete means for solving the problems in the present invention is a nursery box 1 filled with floor soil.
2, a seeding mechanism 6 for forming a large number of seeding holes 22 on the floor of the seedling box 12 being transported, and a seeding mechanism 7 for dropping and supplying seeds N to the large number of seeding holes 22.
And a seeding apparatus for raising seedlings, comprising:
Is provided with a rough roll 20 having coarse projections 20A for forming coarse holes in the floor soil, and a finishing roll 21 having finishing projections 21A for finishing the coarse holes formed by the coarse rolls 20 in a rotatable manner. is there.

[0006] With this, the rough roll 20 is first placed on the floor soil.
A rough hole is formed by the rough protrusion 20A, and then the rough hole is formed by the finishing protrusion 21A of the finishing roll 21 to form the seeding hole 22. The seeding hole 22 is formed into a more accurate shape and deeper hole in two stages. The seedling box 12 is normally conveyed without applying excessive pressing force to the seedling box 12. The second specific means for solving the problem in the present invention is a transport mechanism 3 for transporting a seedling box 12 in which a cell tray 14 in an outer box 13 is filled with floor soil, and a floor soil upper surface of the seedling box 12 being transported. Forming mechanism 6 for forming a large number of seeding holes 22
And a seeding mechanism 7 for dropping and supplying seeds N to the large number of seeding holes 22. The shaping mechanism 6 includes a coarse roll having coarse projections 20A for forming coarse holes in the floor soil. 20 and a finishing roll 21 having finishing projections 21A for finishing a coarse hole formed by the rough roll 20 are provided so as to be freely rotatable, and a holding means 31 for regulating the floating of the cell tray 14 of the seedling raising box 12 being molded is provided. It is doing.

[0007] Thus, the coarse roll 20 is first placed on the floor soil.
A coarse hole is formed by the coarse projection 20A, and then the coarse hole is formed by the finishing projection 21A of the finishing roll 21 to form the seeding hole 22. The seeding hole 22 is formed into a more accurate shape and a deeper hole. The cell tray 14 of the nursery box 12 is formed and is not conveyed excessively, and the cell tray 14 is normally conveyed while being restrained from rising by the pressing means 31. The third specific means for solving the problem in the present invention is the above-mentioned pressing means 31 in addition to the second specific means.
Means that the pressing member 32 is in contact with the upper surface of the cell tray 14 from above while the seeding hole 22 is being formed.

Thus, the floating of the cell tray 14 is reliably restricted with a very simple structure. The fourth specific means for solving the problem in the present invention is the second or third means.
In addition to the specific means described above, the pressing means 31 has a rotating brush 29 which rotates while simultaneously contacting the finishing roll 21 and the cell tray 14. In this way, the floating of the cell tray 14 is regulated, and at the same time, the soil attached to the finishing roll 21 is removed.

A fifth concrete means for solving the problem in the present invention is that, in addition to any one of the second to fourth concrete means, the pressing means 31 is located on the rear side of the finishing roll 21 in the transport direction. In addition, a pressing roller 33 that rotates at a higher peripheral speed than the transport speed of the cell tray 14 and rotates in the same direction as the finishing roll 21 while pressing the cell tray 14 from above is provided. In this way, the lifting of the cell tray 14 is restricted, and at the same time, even if the cell tray 14 is displaced or deformed in the molding mechanism 6, the cell tray 14 is corrected to a normal position and posture.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 indicates the entire seedling raising seeding apparatus.
The transport mechanism 3 is incorporated in the machine frame 2, and a floor soil supply mechanism 4, a pressure reduction mechanism 5, a molding mechanism 6, a seeding mechanism 7, a soil cover supply mechanism 8, a watering mechanism 9, and the like are provided across the transport mechanism 3. 2 is installed. In the seedling raising seedling apparatus 1, a seedling box supply mechanism 10 is disposed on the transport start end side of the transport mechanism 3 of the machine frame 2, and a pressure reduction mechanism 5 is provided below the transport mechanism 3 from below the floor soil supply mechanism 4. A collection conveyor mechanism 11 is provided below the molding mechanism 6.

In FIG. 1 to FIG.
The cell tray 14 is inserted into the cell tray 14, and the inside is partitioned vertically and horizontally by the cell tray 14, and a large number of pot portions 15 are arranged and formed. The seedling raising boxes 12 include those having the pot portions 15 of 288 (width 12 × length 24), 200 (width 10 × length 20), and 128 (width 8 × length 16). The machine frame 2 is divided into three parts in the transport direction of the seedling raising box 12, and the splitter frames 2A and 2B have wheels 70 that can move back and forth on their legs, and can be separated and moved. It is portable.

Each splitter frame 2A, 2B, 2C has
Divided transport mechanisms 3A, 3B, and 3C are provided, are capable of transmitting power to each other via a chain transmission means or a gear transmission means, and are driven by a transport motor 71. Each of the transport mechanisms 3A, 3B, and 3C has a rail 72 on which the seedling raising box 12 is movably mounted, and a chain 73 that rotates and rotates by power from a motor 71.
Is provided with a pushing body 23 at a constant pitch P, and the pushing body 23 comes into contact with the seedling raising box 12 and pushes it at a constant speed. In addition, you may make it the conveyance mechanism 3 convey, carrying a seedling raising box 12, using a belt with a projection (a pusher).

The seedling box supply mechanism 10 has a guide frame 74 made of an angle material for guiding the four corners of the seedling box 12 on the machine frame 2 and stores and holds the seedling boxes 12 stacked in a plurality of stages. The lower part of the front two guide members 74 is notched, and the lowermost seedling raising box 12 can be sent out by the transport mechanism 3. The seedling raising box 12 is first stored in the seedling raising box supply mechanism 10 and placed on the divided transfer mechanism 3A of the transfer mechanism 3, and is sent out one by one from the seedling raising box supply mechanism 10 and supplied to the floor soil supply mechanism 3, A required amount of floor soil is supplied from the floor soil conveyor 17 by passing through the floor soil supply mechanism 3, and then the pressure is reduced by the pressure reduction roller 18 of the pressure reduction mechanism 5.

The pressure reducing roller 18 is rotatably supported by a vertically movable support frame 19 via a parallel link 16 on the machine frame 2.
Crushes the floor soil from above. The support frame 19 is pressed downward by a spring 16A. When the pressure-reducing roller 18 rides on the seedling raising box 12, the support frame 19 rises against the spring 16A. After the floor soil is filled in the cell tray 14, the excess soil may be removed by a scraper that is in sliding contact with the upper surface of the cell tray 14, and then the floor soil amount may be adjusted appropriately by a floor soil brush.

The shaping roll of the shaping mechanism 6 is of a two-stage type. The roughing roll 20 and the finishing roll 21 are rotatably supported on the support frame 19.
A large number of coarse projections 20A are provided on the outer circumference of the roller 0 in the axial and circumferential directions, and a large number of finishing projections 21A are also provided on the outer circumference of the finishing roll 21 in the axial and circumferential directions. The rough roll 20 and the finishing roll 21 are provided with projections of the same shape on the same cylindrical body, one of which is a rough projection 20A and the other is a finishing projection 21A.
It is arranged lower than, the depth of the hole attached to the floor soil is deep, the hole formed by the coarse roll 20 is a coarse seeding hole,
The hole formed by the finishing roll 21 becomes the seeding hole 22.

The rough roll 20 and the finish roll 21 are attached to a cylindrical body having the same axial center height and the same diameter, and the rough protrusions 20A and the finish protrusions 21A having slightly different shapes are attached to each other. In addition, a circular portion may be formed on the base side of the substantially conical portion as the finishing protrusion 21A, and the height of the circular portion may be higher than that of the rough protrusion 20A. Therefore, the coarse projection 20A forms a shallow and coarse hole with respect to the floor soil in the cell tray 14, and the finishing projection 21A finishes the hole to form a seeding hole 22 having a required shape and depth.

Both the rough rolls 20 and the finishing rolls 21 form seeding holes 22 while pressing and filling the floor soil from above, and the pot portion 15 is filled with a sufficient amount of floor soil. The shape of the hole 22 becomes clear. The rough roll 20 and the finish roll 21 can be easily attached to and detached from the support frame 19, so that replacement of old and new ones and replacement of 200 and 128 pot portions are facilitated. A bearing member 24 is fixed to the support frame 19 so as to support both ends of the roll shafts 20B and 21B of the rough roll 20 and the finish roll 21, and a pivot pin 25 is movably movable back and forth on the bearing member 24. A fixing pin 26 is provided and supported, and a stopper plate 27 made of a spring plate is pivotally supported on the pivot pin 25.

The bearing member 24 includes roll shafts 20B, 21
B is inserted from above and can be held in a detented state. With the roll shafts 20B and 21B received on the bearing member 24, the stopper member 27 presses the stopper plate 27 from above, and the stopper plate 27 is pivoted. The fixing pin 26 moves forward with the support pin 25 and moves forward.
Hang on. The attachment / detachment support structure for the rough roll 20 and the finish roll 21 allows the roll shafts 20B and 21B to be attached / detached by a simple and easy operation of merely moving the stopper plate 27 back and forth.

The rough roll 20 and the finishing roll 21 of the molding mechanism 6 are freely rotatable, ride on the seedling raising box 12 transported by the split transport mechanism 3A, and have the rough projections 20A.
The finishing projections 21 </ b> A are fitted into the pot portions 15 of the cell tray 14, thereby rotating in synchronization with the transport speed of the seedling raising box 12. The rough projections 20A and the finishing projections 21A to be fitted form seeding holes 22 of a required depth continuously on the upper surface of the floor soil of each pot portion 15 one by one in a row. In the molding mechanism 6, rotating brushes 28 and 29 that are in sliding contact with the outer peripheral surface are disposed near the rough roll 20 and the finish roll 21, respectively. Rotating brushes 28, 29
Are supported by a support frame 19 and are rotationally driven by a motor 30.

The power of the motor 30 is transmitted from the first rotating brush 28 to the second rotating brush 29 via a chain transmission means.
The rotating brushes 28 and 29 are rotated counterclockwise in FIG. 3, and the pressure reduction roller 18 is rotated clockwise from the first rotating brush 28 via a chain transmission means and a gear transmission means. The first rotating brush 28 is in sliding contact with the rough roll 20 so that the floor soil adhering to the rough roll 20 can be wiped off. The second rotating brush 29 is in sliding contact with the finishing roll 21 and also in sliding contact with the upper surface of the cell tray 14, so that the floor soil adhering to the finishing roll 21 can be wiped off and the soil on the upper surface of the cell tray 14 can be removed. I have.

The second rotating brush 29 also prepares the ground surface of the floor soil, and can remove excess soil on the upper surface of the cell tray 14 and the floor soil surface. Even after entering the hole, the subsequent finishing roll 21
Then, the holes are finely finished to form the seeding holes 22. Since the rotating brush 29 also comes into sliding contact with the upper surface of the cell tray 14, it constitutes one of the pressing means 31 for restricting the floating of the cell tray 14 during molding. Molding mechanism 6
In addition, the rotating brushes 28 and 29
Holding member 32 in the vicinity of (near the nursery box transport direction),
A pressing roller 33 is provided on the front side of the finishing roll 21 in the seedling box transport direction.

The pressing member 32 has a first pressing member 32A located on the side of the first rotating brush 28 and a second pressing member 32 located on the side of the second rotating brush 29, each of which is made of a bar. It is formed in a U-shape when viewed from the side, and both front and rear ends are attached to the support frame 19, and abuts on the upper surfaces of the left and right sides of the cell tray 14 in the outer box 13 to prevent the cell tray 14 from floating. The pressing roller 33 is held in contact with the upper surface of the cell tray 14 while being pressed against the supporting frame 1.
9 is rotatably supported, and power is transmitted from the second rotating brush 29 via a chain transmission means and a gear transmission means, and the peripheral speed is higher than the peripheral speed of the finishing roll 21, for example,
It is driven at a peripheral speed of 1.1 to 2.0 times (preferably around 1.5 times).

The cell tray 14 in the outer box 13 is driven by the rough roll 20 and the finishing roll 21 being engaged with the pot portion 15, so that the cell tray 14 has a resistance to conveyance from the rough roll 20 and the finishing roll 21. The cell tray 14 may be displaced rearward (conveyance is slowed down) or may be bent, and when the cell tray 14 comes out of the molding mechanism 6, a forward force is applied by the pressing roller 33, and the displacement or The bending is eliminated. Eliminating such shifts and flexures enables the finishing work of the seeding hole 22 by the finishing roll 21 to be performed accurately.
Sowing work can be performed normally.

The rotating brushes 28 and 29 and the pressing roller 33 can be adjusted up and down freely, and can be adjusted when worn down and the pressing force can be adjusted. Further, the holding member 32 and the holding roller 33 slidably contact or roll on the upper surface of the seedling raising box 12 in the same manner as the pressure-reducing roller 18.
0, the positional relationship between the finishing roll 21 and the second rotating brush 29 and the upper surface of the seedling raising box 12 can be kept constant. The type-setting operation in the type-setting mechanism 6 includes the seedling box 1
2 is transported by the divided transport mechanism 3A, so that the outer box 13
While holding down the cell tray 14 in the inside with the pressure-reducing roller 18 and the first pressing member 32A so as not to float, the rough roll 20 is in contact with the floor soil surface to form a coarse hole, and the first and second pressing members 32A, A coarse hole and a seeding hole 22 are formed by the two rolls 20 and 21 while pressing with the 32B, and a coarse hole is formed in the seeding hole 22 with the finishing roll 21 while holding with the second pressing member 32B, the second rotating brush 29 and the pressing roller 33. The cell tray 1 is formed by the pressing roller 33.
4 is carried out while correcting the displacement, deformation and the like.

Instead of using a cell tray, the seedling raising box 12 may be one in which the inside of the box is vertically and horizontally partitioned by a grid-like partition plate. In this case, the holding means 31 works effectively similarly to the case of the cell tray. . In FIGS. 1, 2, and 8 to 14, the seedling raising box 12 after the seeding holes 22 are formed is sent to the seeding mechanism 7, and is continuously sent by the divided transporting mechanism 3 </ b> B of the seedling raising transport mechanism 3 of the seeding mechanism 7. Each sowing hole 22 of one row of pot portions 15 in a direction orthogonal to the seedling box transport direction
, One or a plurality of coated seeds (coated seeds) or naked seeds are sown simultaneously.

In the seeding mechanism 7, the left and right side walls of the mechanism frame 36 are fixed to the machine frame 2, and the operation box 37, the seeding roll 38, the rotating brush 40, the hopper 39 and the like are fixed to the mechanism frame 36. A collection box 41 is provided so as to be freely taken in and out. Sowing roll 38
The power is transmitted from the divided transport mechanism 3B via the chain transmission means 42A, and the power is transmitted from the seeding roll 38 to the gear transmission means 42B, the chain transmission means 42C, and the gear transmission means 42.
D is transmitted to the rotating brush 40, and the rotating brush 40
Are rotated in the same direction as the seeding roll 38 to make sliding contact.

Reference numeral 43 denotes a sliding body, which is in contact with the seed feeding side of the seeding roll 38 and guides the seed N from the upper part to the lower part of the seeding roll 38. The seeding roll 38 is formed with a large number of seed storage recesses 44 arranged vertically and horizontally on the outer peripheral surface.
The multiple seed storage recesses 44 correspond to the pot portions 15 of the cell tray 14, and thus correspond to the seeding holes 22 formed in the floor soil. In addition, the outer peripheral surface of the seeding roll 38 stores seeds N in a seed feeding part (seed storage part) 52 in cooperation with the hopper 39 and the rotating brush 40.
By rotating, the seeds N are supplied to the seed storage recess 44 and fed out, and are dropped and supplied to the seeding holes 22 on the upper surface of the floor soil of the seedling raising box 12 passing below.

When seedling boxes 12 having different numbers of pot portions 15 are used, the seeding rolls 38 are replaced with those in which seed storage recesses 44 are formed in a number corresponding to the number of pot portions. Also, the seed storage recess 44 is provided in the sowing roll 38.
Are formed in the circumferential direction, and the scraper 79
Can be cleaned. The hopper 39 includes a receiving plate 48 that is close to the outer peripheral surface of the seeding roll 38 and stores the seed N in cooperation with the outer peripheral surface of the seeding roll 38, and the hopper 39 together with the receiving plate 48 above the receiving plate 48. Upper receiving plate 53 for storing the seeds N, a peripheral wall 54 integrated with the receiving plate 48 and the upper receiving plate 53, and a transparent plate opening / closing lid pivotally supported by the peripheral wall 54 above the hopper 39. 5
And 7.

A supply amount adjusting member 55 is provided on the lower surface side of the upper receiving plate 53, and the position of the supplying amount adjusting member 55 is adjusted along the upper receiving plate 53 by an adjusting screw 56. The gap between is adjustable,
Thereby, the amount of seeds stored in the seed dispensing section 52 is adjusted. Reference numeral 49 denotes a pivoting means for oscillatingly mounting the hopper 39 on the upper part of the mechanism frame 36. The front and rear sides of the peripheral wall 54 are supported by the mechanism frame 36 via the support shaft 60, and the other side is vertically A long hole 61 long in the direction is formed.

A set screw 62 is screwed into the mechanism frame 36, and the set screw 62 is inserted into the long hole 61 to fasten the hopper 39 via the nut 63, and the hopper 39 is connected to the mechanism frame 36. It is removable. Loosen the set screw 61 and put the hopper 3 against the mechanism frame 36
When the fastener 9 is loosened, the hopper 39 can be swung around the support shaft 60 within the range of the long hole 61 to raise the other front and rear sides. When the hopper 39 is swung, the receiving plate 48 moves in a direction away from the outer peripheral surface of the seeding roll 38, and the state in which the seed N is stored in cooperation with the outer peripheral surface of the seeding roll 38 is eliminated, and the stored seed N And the seed N in the hopper 39 above it can be dropped.

The collecting box 41 has a side edge close to the outer peripheral surface of the seeding roll 38, an upper edge positioned substantially at the same height as the axis of the seeding roll 38, and The whole amount of the seeds N sliding down along the outer peripheral surface is stored. Since the outer circumferential surface of the sowing roll 38 is an arc surface, the seed falling speed is lower than when the seeding roll 38 is directly below and the falling distance when vertically falling is also reduced, so that damage to the seed N is extremely reduced. As described above, the entire amount of the seeds N can be stored in the collection box 41 by swinging the hopper 39, so that the seeds can be collected without removing the hopper 39 from the mechanism frame 36 and turning it upside down as in the related art. The seed can be quickly and easily recovered by a simple operation, and there is no danger of spilling of seeds N, mixing of seeds of soil or other crops, or occurrence of seed cracking, and the seed exchange operation can be performed quickly and easily.

The seed N is cooperated with the outer peripheral surface of the seeding roll 38.
As means for releasing the cooperative action of the hopper 39 storing the seeds, the receiving plate 48 storing the seeds N in close proximity to the outer peripheral surface of the seeding roll 38 can be moved linearly or swingably with respect to the peripheral wall 54 of the hopper 39. The receiving plate 48 may be movably provided, and may be configured to move in a direction away from the outer peripheral surface of the seeding roll 38 by linearly moving or swinging the receiving plate 48. A viewing window 50 is formed at the upper front and back of the mechanism frame 36. The viewing window 50 is formed by forming an opening in the mechanism frame 36 and closing the opening with a transparent plate, so that the state in which the seeds N are stored in the seed feeding portion 52 and the state in which the seeds N are fed out can be visually checked.

The seeding mechanism 7 includes a chain transmission means 4
The clutch means 4 is used to disconnect and connect the power transmitted from the 2A sprocket 65 to the roll shaft 38A of the seeding roll 38.
5 and a seedling raising box 1 near the sowing roll 38.
A sensor 46 formed by a limit switch or the like is provided on the splitter frame 2B in order to detect the carry-in of the device 2. The sprocket 65 has a circular body on the side and is loosely fitted to the roll shaft 38A so as to be relatively rotatable.
The two engagement claws 65A protrude in the axial direction.

The clutch body 66 slidably keyed to the roll shaft 38A also has an engaging claw 66A, which is capable of engaging and disengaging from the engaging claw 65A of the sprocket 65 by sliding in the axial direction. By combining them, the sprocket 65
The power is transmitted to the seeding roll 38 from. The clutch body 66 is urged toward the sprocket 65 by a spring 74. As shown in FIGS. 9, 11 to 14, an arc-shaped ridge 66 </ b> C having a cam surface 66 </ b> B is formed on the outer peripheral surface of the clutch body 66.
A release body (operating member) 47 that can be engaged with B is disposed radially outside the clutch body 66.

The release member 47 is formed by fixing a cam release plate 47B to a plate member 47A formed in a substantially L-shape in a front view (these may be integrally formed).
B is in contact with the side surface of the sprocket 65, and
The vicinity of the bent portion of A is pivotally supported by the mechanism frame 36 via the support shaft 68, and the upper end thereof is connected to the iron core of the solenoid 69. The solenoid 69 is operated by a seedling box detection signal from the sensor 46. When the solenoid 69 is turned off, the plate member 47A is rotated by a spring 75 to press the cam release plate 47B against the outer peripheral surface of the clutch body 66. I do.

The cam release plate 47B abuts on the outer peripheral surface of the clutch body 66 at a portion where there is no protrusion 66C, and
6C is rotated, and the cam surface 66B of the cam release plate 4
By contacting 7B, the clutch body 66 can be separated from the sprocket 65 by the cam action of both. Since the position where the clutch body 66 is separated from the sprocket 65 is always constant, the stop position of the seeding roll 38 is also always constant. Conversely, when the solenoid 69 is turned on, the plate member 47A rotates against the spring 75 to separate the cam release plate 47B from the outer peripheral surface of the clutch body 66, and the cam release plate 47B engages with the cam surface 66B. Cancel the match.

As a result of the disengagement, the clutch body 66 approaches the sprocket 65, and the engaging claw 65A of the sprocket 65 turns to engage with the engaging claw 66A of the clutch body 66. 38A,
The seeding roll 38 is integrally driven to rotate. No matter where the engaging pawl 65A of the sprocket 65 is located, there is only one engaging pawl 65A and one engaging pawl 66A, so that the sprocket 65 always transmits power to the clutch body 66 at a fixed position. Will start.

The sprocket 65, the clutch body 66,
The release means 47 and the solenoid 69 constitute a clutch means 45. The clutch 46 is activated when the sensor 46 detects the seedling raising box 12, and the clutch is released when the detection is stopped. Always stop at a fixed position. The seeding roll 38 of the seeding mechanism 7 includes:
The roll circumference L is set to a length equal to one pitch P of the pusher 23 of the transport mechanism 3, and one pitch P of the pusher 23 is set.
Is naturally longer than the length of the nursery box 12 in the transport direction.

The seed storage recess 44 of the seeding roll 38 is not formed on the entire circumference of the seeding roll 38, and the seeding roll 38 has a blank area 80 without the seed storage recess 44.
When the seeding roll 38 stops, the blank area 80 is on the lower side. The seed storage recess 44 of the sowing roll 38
From the position of the outer peripheral surface corresponding to the seeding hole 22 at the rearmost position of the floor soil of the seedling raising box 12 engaged with the pusher 23, to the position of the outer peripheral surface corresponding to the seeding hole 22 at the foremost position of the floor soil, the seeding holes 2 are sequentially arranged.
2, so that the seed storage recess 44 on the rear side in the rotation direction of the blank area 80 corresponds to the seeding hole 22 at the foremost position of the floor of the seedling raising box 12.

When the seeding roll 38 is rotated and the seedling raising box 12 is moved, the seed storage recess 44 sequentially faces the seeding hole 22 when the seed storage recess 44 comes to a position just below the slide 43, and the entire seed storage recess 44 is It faces all the seeding holes 22. When the seedling box 12 is continuously conveyed for each pusher 23, the solenoid 69 is repeatedly turned on and off by the sensor 46, but the release member 47 only comes into contact with the clutch body 66 and engages with the cam surface 66B. And the contact state of the clutch means 45 is maintained.

When the seedling box 12 to be conveyed runs out, the solenoid 69 is turned off by the sensor 46, and the release body 47 is engaged with the cam surface 66B to disengage and move the clutch body 66, and the rotation of the seeding roll 38 To stop. Next, when the nursery box 12 is conveyed and the solenoid 69 is turned on by the sensor 46, the engaging claw 66A approaches a position where it can be engaged with the engaging claw 65A.
Only when 5A rotates, does it engage and power transmission to the seeding roll 38 starts.

Since the rotation of the engagement claw 65A of the sprocket 65 and the movement of the pusher 23 are synchronous and always in a fixed positional relationship, the relative relationship between the seedling raising box 12 and the seeding roll 38 is also always in a fixed positional relationship. If the stop position of the seeding roll 38 is shifted due to inertia force or the like when the seeding roll 38 is stopped, the shift is caused by the shift of the blank area 8
0, the engagement claws 65A of the sprocket 65
The start of the sowing roll 38 is started at an appropriate timing with respect to the conveyed seedling raising box 12 only by shifting the timing of engaging with the engaging claw 66A. Note that the roll circumferential length L of the seeding roll 38 is equal to one pitch P of the pushing body 23 of the transport mechanism 3.
It is not necessary that the length be equal to the length of the entire seed storage recess 44.

That is, one rotation time of the seeding roll 38 of the seeding mechanism 7 is made equal to the movement time of one pitch P of the pusher 23 of the transport mechanism 3 so that the seed storage recess 44
From the position of the outer peripheral surface corresponding to the seeding hole 22 at the rearmost position of the floor soil to the position of the outer peripheral surface corresponding to the seeding hole 22 at the foremost position of the floor soil. Just do it. In FIG. 1, similarly to the floor soil supply mechanism 4, the soil cover supply mechanism 8 removes the soil in the hopper from a soil cover conveyor 85.
And supplies a required amount onto the seedling raising box 12 after being sown, which is conveyed by the divided conveyance mechanism 3B.

The irrigation mechanism 9 sprinkles only a required amount of water on the seedling box 12 after soil covering, which is conveyed by the split conveying mechanism 3C from the water sprinkling pipe 86, by mixing only tap water or an appropriate chemical. A foldable extension frame 87 is connected to the splitter frame 2C. Instead of the extension frame 87, the dividing machine frame 2C may be formed to be long, and a stacking device for the nursery box 12 may be mounted. The collection conveyor mechanism 11 is located below the floor soil supply mechanism 4, the pressure reduction mechanism 5, and the molding mechanism 6, and the floor soil falling from them is collected by a belt conveyor.
They are collected in places and can be collected.

A seed receiving member 8 is provided below the sowing mechanism 7.
9, a soil receiving member 90 is provided below the soil covering supply mechanism 8, and a water receiving member 91 is provided below the watering mechanism 9. Note that the present invention is not limited to the above embodiment, and can be variously modified. For example, the seeding mechanism 7 may adopt a conventional technique in which a seeding plate having a seeding hole is linearly reciprocated back and forth. Hopper 39 is seeding roll 3
8 may be provided on the mechanism frame 36 so as to be able to move linearly in a direction to separate them in order to release cooperation.

[0046]

According to the present invention described above, coarse holes are first formed on the surface of the floor soil with the rough projections 20A of the rough roll 20,
Next, the coarse holes can be finished with the finishing projections 21A of the finishing roll 21 to form the seeding holes 22.
Is formed in two stages, so that the seedling raising box 12 can be transported normally because an excessive pressing force is not applied to the seedling raising box 12.

[Brief description of the drawings]

FIG. 1 is an overall front view schematically showing an embodiment of the present invention.

FIG. 2 is a schematic explanatory view showing an overall sowing operation.

FIG. 3 is a front view of a pressure reduction mechanism and a molding mechanism.

FIG. 4 is a sectional plan view of the same.

FIG. 5 is a sectional side view showing a machine frame and a transport mechanism.

FIG. 6 is a front view showing a roller shaft support structure of the molding mechanism.

FIG. 7 is a sectional plan view of the same.

FIG. 8 is a front view of the seeding mechanism.

FIG. 9 is a rear view of the same.

FIG. 10 is a sectional side view of the same.

FIG. 11 is a sectional view taken along line XX of FIG. 10;

FIG. 12 is a sectional view taken along line YY of FIG. 10;

FIG. 13 is a plan view of the clutch body.

14 is a view as viewed in the direction of the arrow Z in FIG. 13;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seedling raising seeding device 2 machine frame 3 transport mechanism 4 floor soil supply mechanism 5 crushing mechanism 6 molding mechanism 7 seeding mechanism 8 covering soil supply mechanism 9 watering mechanism 11 seedling box supply mechanism 12 seedling box 13 outer box 14 cell tray 15 pot section 20 coarse Roll 21 Finishing Roll 22 Seeding Hole 23 Pressing Body 31 Pressing Means 32 Pressing Member 33 Pressing Roller 36 Mechanism Frame 38 Seeding Roll 39 Hopper 41 Collection Box 44 Seed Recess 45 Clutch Means 46 Sensor N Seed P Pitch

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Jin Ohara 2-2-2-7 Mizuhashi, Higashiosaka-shi, Osaka Daiwa Seiko Co., Ltd. F-term (reference) 2B027 ND03 SA09 SB01 SC08 SD02 SD07 XA04 XA11 XB07 XC02 2B054 AA04 BA01 BB04 CA06 CB02 DA13 DA17

Claims (5)

[Claims] 1. A transport mechanism for transporting a seedling box filled with floor soil, a molding mechanism for forming a large number of seeding holes on the upper surface of the floor of the seedling box being transported, and a drop feeding of seeds to the multiple seeding holes. And a seeding mechanism for raising seedlings, comprising: a roughing roll having coarse projections for forming coarse holes in the floor soil; and a finishing projection for finishing coarse holes formed by the coarse rolls. A seeding apparatus for raising seedlings, which comprises a finishing roll rotatably. 2. A transport mechanism for transporting a seedling box filled with floor soil in a cell tray in an outer box, a molding mechanism for forming a large number of seeding holes on the upper surface of the floor soil of the seedling box being transported, and the multiple seeding. A seeding apparatus for raising seedlings, comprising a seeding mechanism for dropping and supplying seeds to holes, wherein the molding mechanism comprises: a rough roll having coarse projections for forming coarse holes in the floor soil; and a coarse hole formed by the coarse roll. A seeding apparatus for raising seedlings, comprising: a finishing roll having finishing protrusions for finishing the seedling; and a holding means for restricting the lifting of a cell tray of the seedling raising box during molding. 3. The seeding apparatus for raising seedlings according to claim 2, wherein the holding means has a holding member that comes into contact with the upper surface of the cell tray from above during formation of the seeding hole. 4. The seeding apparatus for raising seedlings according to claim 2, wherein the holding means has a rotating brush which rotates while simultaneously contacting the finishing roll and the cell tray. 5. The pressing means has a pressing roller which is located on the rear side in the conveying direction of the finishing roll and which rotates at a higher peripheral speed than the conveying speed of the cell tray and in the same direction as the finishing roll while pressing the cell tray from above. The seeding apparatus for raising seedlings according to any one of claims 2 to 4, characterized in that: