JP2009201441A - Seed-sending out type seeding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a seeding machine in which a prescribed amount of seeds (especially one seed) is precisely inserted into a seed hole of a seeding roll. <P>SOLUTION: The seeding machine having a seed hopper for storing the seeds, and the seeding roll having the seed holes for sending out the seeds, and formed in the circumferential direction on the outer periphery is equipped with a member for controlling the flow of the seeds, formed in the seed hopper, and seed-arranging parts extended to the seedling roll. The members for controlling the flow of the seeds so that one or two seeds may be arranged in the vertical direction are arranged in the seed-arranging part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seedling sowing machine for seeding a pot assembly or a pot seedling box in which a large number of individual pots used for seedling are connected.

  A pot seedling box in which a large number of cells are integrally formed in a vertical and horizontal direction such as a cell tray, or a pot aggregate in which a large number of individual pots formed from a thin film such as paper or paper are connected via a water-soluble adhesive (for example, Japan Vegetable pots (R) manufactured by Beet Sugar Manufacturing Co., Ltd.) are widely used for seedling production. In sowing work on these, a sowing machine (for example, Patent Document 1) having a seed hopper for storing seeds and a sowing roll provided with a seed hole for feeding seeds in the circumferential direction of the outer peripheral surface is efficient. It is.

In addition, a seeder configured to store seeds in a seed hopper and sequentially feed seeds with a seeding roll (feeding roll) is widely used in addition to pot nursery boxes and pot assemblies (for example, Patent Document 2, Patents). Reference 3).
JP2007-129962 JP-A-9-135611 JP-A-8-154428

In the sowing machine having this configuration, one seed must be reliably taken into the seed hole to the sowing roll. In the part where the seed is taken into the seed hole, if the seed causes a bridge, it is not taken into the seed hole.
In addition, seed segregation may occur in the seed hopper due to the difference in size and shape of the seed, and a plurality of seeds may enter one seed hole. This can happen even in the case of coated seeds.

  When a seeder with this configuration is used in a pot nursery box or pot assembly, if seeds are not taken into the seed hole, a missing line will occur and supplementary planting will be required, and multiple seeds will enter the seed hole. In some cases, multiple buds will appear and thinning will be required.

The present invention has been made in view of the above circumstances, and a first object is to provide a high-accuracy seeding machine. In particular, a predetermined amount of seeds (especially 1 The purpose is to provide a low-cost configuration of the model machine that contains the grains.
The second object is to efficiently realize a high-precision sowing operation, and particularly to provide a configuration for preventing the seeding machine from stopping during the operation.

Among the present inventions, the first to sixth aspects of the present invention are for achieving the first object.
The invention of claim 1 controls the flow of seeds in the seed hopper in a seeder having a seed hopper for storing seeds and a seeding roll provided with a seed hole for feeding seeds in the circumferential direction of the outer peripheral surface. A member is provided, and a seed alignment portion up to a sowing roll is provided.
The invention according to claim 2 is characterized in that a member for controlling the flow of seeds is arranged in the seed alignment portion so as to align with one or two seed layers in the vertical direction.
The invention of claim 3 is characterized in that seed alignment grooves are provided in the circumferential direction of the sowing roll.
The invention according to claim 4 is characterized in that the member for controlling the flow of the seed is provided so as to be movable and rotatable with respect to the seed alignment portion.
The invention of claim 5 is characterized in that the sowing roll is made of a combination of discs provided with seed holes, and power transmission to the sowing roll is made by a toothless gear.
The invention of claim 6 is characterized in that the toothless gear has the same number of teeth as the number of individual pots (or the number of cells) per row in the conveying direction of the pot aggregate (or pot nursery box). To do.

Among the present inventions, the inventions according to claims 7 to 8 are for achieving the second object.
The invention of claim 7 is characterized in that the shaft of the seeding roll is mounted on the body of the seeding machine via a bearing, and this shaft is allowed to float together with the bearing. Depending on the timing of transmission and the shape of the teeth, the tips of the teeth on the sowing roll side and the tips of the teeth of the tooth missing gear may collide with each other (impact). Therefore, this can be avoided.
The invention of claim 8 is characterized in that the bearing is a bearing with a flange.

According to the present invention, seeding on a pot assembly or the like can be performed with high accuracy and speed. In particular, labor such as supplementary planting and thinning can be reduced. The seeding machine according to the present invention has a recombination sowing roll structure and a sowing timing mechanism that can be easily changed, so that it is easy to comply with the standards of a wide variety of pot assemblies or pot seedling boxes. Become. Therefore, it is possible to reduce the manufacturing cost of the seeder.
Moreover, it can work efficiently by preventing the seeding machine from stopping.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows the overall structure of the seeder.
The body of the seeding machine is constituted by a main body frame 16, support legs 15, an extension conveyor 45, and a seeding part frame 36.
The conveyor 10 conveys the pot aggregate 4 placed on the reversing plate 1 in the direction of arrow A by the conveying chain 11 and the pusher 12. On the conveyor 10, a seeding part S for supplying seeds 50 into the pot aggregate 4 is arranged. Seeding is performed when the pot aggregate 4 passes through the seeding part S.
The power from the motor 26 is transmitted to the sprocket 43 via the chain 25, sprocket 21, chain 24, sprocket 52, and chain 27.
The toothless gear 39 provided on the shaft 40 coaxial with the sprocket 43 rotates in the direction of arrow C at a predetermined rotational speed in synchronization with the conveyor 10, and transmits power to the seeding roll 30 via the gear 32. The power from the motor 26 is also transmitted to the sprocket 20 provided on the shaft 18 coaxial with the sprocket 21.

  The conveyor 10 includes a pair of left and right body frames 16 that are erected on a floor 51 by support legs 15. A plurality of rollers 13 are rotatably supported on the main body frame 16, and the pot aggregate 4 is placed on these rollers 13. A pair of sprockets 20 and 23 are supported on the front and rear end portions of the main body frame 16 by using rotary shafts 18 and 19. A pair of left and right sprockets 20 and 23 is provided between the front and rear sprockets 20 and 23. The transport chain 11 is hung around.

  The transfer chain 11 transmits the rotation of the motor 26 from the downstream (front) rotating shaft 18 to the pair of sprockets 21 so that the upstream (rear) sprocket 23 rotates endlessly in the direction of arrow B. ing. Further, pushers 12 are attached to the transport chain 11 at a predetermined pitch. The pitch of the pusher 12 is set to be larger than the required vertical (conveying direction) dimension of the pot assembly 4, and the pusher 12 is applied to the rear end of the reverse plate 1 on which the pot aggregate is placed. It contacts and conveys in the conveyance direction A.

  The pot assembly 4 has a configuration in which the individual pots 2 are bonded to each other with a water-soluble adhesive or the like, as described in Japanese Patent Publication No. 38-25715. As shown in FIG. 2, the pot aggregate 4 is used in a state of being developed on the honeycomb, and the individual pots 2 are arranged in the vertical direction (same as the conveying direction A in the seeding machine) L and the horizontal direction W, respectively. Yes. On both short sides, a label 8 is affixed with a gap for inserting the unfolding metal fitting 6.

  The structure of the protruding plate 3 is shown in FIG. FIG. 3A is a plan view and FIG. 3B is a side view. On the projection plate 3, projections 5 having a truncated cone shape are provided so as to correspond to the pitches in the vertical direction L and the horizontal direction W of the individual pots 2 of the pot aggregate 4. In addition, when the pot assembly 4 is deployed, fixing brackets 14 for hanging and fixing the deployment bracket 6 are arranged at the four corners.

  The configuration of the reversing plate 4 is shown in FIG. 4A is a plan view and FIG. 4B is a side view. The bottom plate 7, the handle 41, and the side plate 15 are configured. The bottom plate 7 is bent in a U shape, and a handle 41 is attached to both short sides. A side plate 15 is provided on one of the long sides. FIG. 4C shows a cross-sectional shape (Z-Z cross section). The pot assembly 4 that has been seeded is removed from the side where the side plate 15 is not provided.

The preparatory work before sowing is shown in FIG. As shown in the plan view of FIG. 5A, the developing metal fitting 6 is inserted into the gap between the pot assembly 4 and the label 8, pulled in the longitudinal direction L, and developed into a honeycomb shape. Then, as shown in the side view of FIG. 5B, the pot assembly 4 is fitted into the projection plate 3 so that the individual pots 2 are fitted into the projections 5, and the unfolding metal fitting 6 is fixed to the fixing metal fitting. Hang to fix the position. After fixing the pot aggregate 4, the seedling culture soil 49 (not shown) is filled in each individual pot 2 and squeezed. Thereafter, as shown in FIG. 5C, the reversing plate 1 is placed on the pot assembly 4. At this time, the dimension (inner dimension) of the portion where the pot assembly 4 is placed on the reversing plate 1 is substantially the same as the dimension in the vertical direction L of the pot assembly 4, so to speak, “Fitting” It has become.
After reversing by a reversing means (not shown), the development fitting 6 is removed and the protruding plate 1 is also removed as shown in FIG. Then, the pot assembly 4 is placed on the reversing plate 1, and a mortar-shaped seeding hole 55 appears in each individual pot 2 of the pot assembly 4. At this time, the side plate 15 is brought into close contact with one side face in the longitudinal direction L of the pot assembly 4.
Then, by placing the pot aggregate 4 together with the reversing plate 1 on the conveyor 10 of the sowing machine, the preparatory work before sowing is completed.
In this series of operations, soil is uniformly and firmly applied to the pot assembly 4 by using a soil reversing device as shown in JP-B-55-50647, JP-B-53-42688, and Japanese Utility Model 4-7711. Can be filled.

FIG. 6 shows the state in which the pot assembly 4 is placed on the conveyor 10 as viewed from the upstream side (rear side).
As shown in FIG. 6, a guide surface 17 is formed on the main body frame 16 of the conveyor 10 so as to cover the upper part of the transport chain 11. The guide surface 17 functions as a cover that covers the transport chain 11, and the guide surface 17 a functions as a guide that guides the reverse plate 1 on which the pot assembly 4 is placed. The pot assembly 4 placed on the reversing plate 1 is positioned by placing it on the conveyor so that the side plate 15 of the reversing plate 1 is in sliding contact with the guide surface 17a.
Under this state, one of the pushers 12 comes into contact with the rear end of the reversing plate 1 by the rotation of the conveying chain 11 of the conveyor 10 and conveys the reversing plate 1 in the conveying direction A. At this time, the side plate 15 of the reversing plate 1 slides along the surface of the guide surface 17a.
In this embodiment, the pusher 12 is provided on one of the pair of transport chains 11, but may be provided on both.

FIG. 7 shows the shape of the sowing roll 30 and the engaged state with the toothless gear 39. A feeding roll 46 and a spacer 47 constituting the sowing roll 30 are attached to the shaft 31 on which the gear 32 is attached to the end portion in an overlapping manner. In the circumferential direction of the feeding roll 46, the same number of seed holes 44 as the teeth 33 of the gear 32 are provided. A seed alignment groove 63 is provided in the circumferential direction of the feeding roll 30. There is no seed hole on the surface of the spacer 47. The shaft 31 has a hexagonal cross section at the fitting portion with the seeding roll 30, and the shaft hole into which the feeding roll 46 and the spacer 47 are fitted has the same hexagonal shape so as to synchronize with the shaft 31. The fitting portion of the shaft 31 is not limited to a hexagonal shape, and the sowing roll 30 may be fixed to the shaft 31 by means such as a quadrangle or octagon, or a key or serration.
The teeth 41 of the toothless gear 39 rotating in the direction of arrow C mesh with the teeth 33 of the gear 32, the shaft 31 rotates in the direction of arrow D, and the sowing roll 30 (feeding roll 46 and spacer 47) also rotates. The toothless gear 39 has the same number of teeth 41 as the number of individual pots 2 in the longitudinal direction L of the pot assembly 4 to be seeded (FIG. 2).
Regarding the seed hole 44, the pitch M in the lateral direction W of the sowing roll 30 is the same as the pitch in the lateral direction W of the individual pot 2 in the pot assembly 4.
Here, the missing tooth gear 39 having the number of teeth matched to the number and pitch of the individual pots 2 in the longitudinal direction L of the pot assembly 4 and the seed hole 44 matched to the number and pitch of the individual pots 2 in the lateral direction W are provided. By combining with the sowing roll 30 having, it is possible to meet various standards of the pot assembly 4.

  It is possible to change the relative angle between the spur gear 39 and the sprocket 43 in FIG. 1 by fixing means (not shown). Thereby, the timing at which the teeth 41 of the toothless gear 39 and the teeth 33 of the gear 32 mesh can be slowed, and as a result, the sowing timing for the individual pot 2 can be easily finely adjusted.

  In addition, as for the missing gear 39, slippage does not occur by meshing with the gear 32 on the seeding roll side, such as a pin gear 74 in which a predetermined number of pins 73 shown in FIG. Any means for transmitting rotation is included in this.

The details of the seeding part S are shown in FIG. The sowing unit S includes a sowing roll 30, a shaft 31, a gear 32, a seed hopper 34, a guide plate 35, a sowing unit frame 36, a scraping brush 38, and a seed flow control plate 9. The sowing roll 30 has a plurality of seed holes 44 for taking in the seeds 50 in the seed hopper 34 on the circumferential surface. Furthermore, although omitted in this figure, seed alignment grooves 63 are provided in the circumferential direction of the sowing roll.
The seed hole 44 is set to a size that allows the coated seed 50 to enter. By rotating the sowing roll 30 at a predetermined speed, a necessary number (for example, one grain) of seeds 50 is supplied into the individual pot 2 in the seedling box 1 conveyed at the predetermined speed.
When the gear 32 provided on the shaft 31 coaxial with the sowing roll 30 is transmitted with power from the toothless gear 39 (FIGS. 1 and 7) and rotates in the direction of arrow D, the seed 50 in the seed hopper 34 is allowed to rotate. 30 seed holes 44 are taken in. With respect to the sowing roll 30 in which the seed 50 is taken into the seed hole 44, the excess seed 50 is scraped off by the scraping brush 38, and only the necessary number is held in the seed hole 44. When the seed 50 taken into the seed hole 44 reaches the sowing position P removed from the guide plate 35 while being held in the seed hole 44 by the guide plate 35 curved in accordance with the shape of the sowing roll 30, the cultivation medium It drops onto the seeding hole 55 of the individual pot 2 filled with 49. When the pot assembly 4 passes through the sowing position P, the seed 50 falls to all the individual pots 2 and sowing to the pot assembly 4 is performed.

As shown in FIG. 9, the seed gate 60 between the seed flow control plate 9 and the seed aligning portion 55 in the seed hopper 34 places the seed 50 in a direction perpendicular to the seed aligning portion 56 as shown in FIG. 8. For aligning grains to two layers. In FIG. 8, they are aligned in a single layer. The interval T of the seed gate 60 is slightly larger than the diameter of the seed 50 so that two seeds 50 cannot pass through at the same time, but may be the same as the diameter of the seed hole 44.
In this way, by controlling the flow of the seed 50 to the sowing roll 30 in the seed hopper 34 and aligning the seed 50 on the seed aligning portion 56, the probability that one seed 50 will enter the seed hole 44 is increased. Get higher.

That is, when a bridge due to interference of a plurality of seeds as shown in FIG. 10A occurs, the seed 50 may not enter the seed hole 44.
In addition, when the original seed shape is extremely flat, such as sugar beet seeds, all seeds do not become spherical even when coated on it, but the flat seeds that reflect the original shape Many may be mixed. Similarly, when the original seed shape is elongated, a large number of elliptical spheres may be mixed even when coated. In such a case, as shown in FIG. 10B, segregation of seeds in the seed hopper occurs, and a plurality of seeds may enter the seeding hole at the same time. The same thing can happen even if the particle size is not the same. By controlling the flow of seeds in the hopper as shown in FIG. 8, it is possible to avoid the above problems.

As shown in FIG. 11A, the seed flow control plate 9 is provided with a long hole 58 so as to be movable in the K direction, and is fixed by a fixing bolt 61. Thereby, the space | interval T can be suitably changed with the diameter of a seed, the sowing grain number, the kind of crop, etc.
Further, in a special case, the seed flow control plate 9 may be used after being removed, or as shown in FIG. 11B, the seed flow control plate 9 may be used while being tilted in the opposite direction to FIG.

FIG. 12 is a schematic diagram showing the action of the seed alignment groove 63. FIG. 12A is a view from the front in the traveling direction, and FIG. 12B is a view from the side.
In order to improve the sowing accuracy, the seed 50 needs to be reliably taken into the seed hole 44. The more seeds 50 are positioned directly above the seed hole 44, the easier it is for the seed 50 to enter the seed hole 44. The seed alignment groove 63 provided so as to pass through the center of the seed hole 44 on the circumference of the sowing roll 30 is the circumference of the sowing roll 30 with respect to the seed 50 as shown in FIG. Acts to prevent rolling in other directions. And as shown in FIG.12 (b), the seed 50 will be in the state which waits for arrival of the seed hole 44 by rotation of the sowing roll 30 in the hopper 34. As shown in FIG. Furthermore, a plurality of grains of the seed 50 do not interfere with each other on the seed hole 44.
At this time, it is necessary to make the seed alignment groove 63 narrower than the seed diameter so that the seed 50 does not fit into the seed alignment groove 63, and the width is about ½ of the seed diameter to be used. Is desirable. Further, the shape of the seed alignment groove 63 may be any of a square shape, a U shape, a V shape, and the like. Further, as shown in FIG. 12C, a chamfer 66 can be applied to the corner of the groove.
The seed alignment groove 63 synergizes with the seed flow control by the seed flow control plate 9 described above to improve the sowing accuracy.

  Note that there is a possibility that a bridge may occur in the seed gate 60 as in FIG. FIG. 13A shows a state where the hopper 34 is viewed from directly above, and FIG. 13B schematically shows a state where a seed bridge is generated in the QQ section. Even if several bridges occur in the width direction W of the hopper 34, as shown in FIG. 13 (a), the seed 50 descends sequentially from the side of the bridged portion to the bottom, so that the necessary amount always flows. Therefore, the seeds will not bridge in the entire hopper and can no longer be sown.

Here, the movement time of one pitch of the individual pot 2 in the traveling direction A of the pot assembly 4 and the movement time of one pitch of the seed hole 44 on the circumference of the sowing roll 30 at the sowing position P are completely synchronized. As described above, the diameter and rotational speed of the toothless gear 39 and the pitch of the teeth 41 are determined. That is, the time required for one rotation of the pusher 12 at the sowing position P is the same as the time required for one rotation of the toothless gear 39. Therefore, the pot assembly 4 can be transported and the seeding roll 30 can be rotated and reliably seeded at an appropriate position.
In addition, since the seeding part S is provided with a de-energizing means (not shown), the seeding roll 30 is rotated by inertia if there is no transmission of power due to the engagement of the toothless gear 39 and the gear 32. There is no.

14 and 15 show the engaged state between the gear 32 of the seeding roll 30 and the toothless gear 39. FIG. The gear 32 follows the toothless gear 39. At this time, depending on the transmission timing and the like, the tooth 32 of the gear 32 and the tooth tip of the toothless gear 39 abut each other (abutment), so that the gear 32 and the toothless gear 39 do not move relative to each other. Sometimes. At this time, the sowing machine naturally stops. When it becomes unable to move due to this collision, the toothless gear 39 on the driving side tries to move the gear 32 on the passive side forcibly, so that the motor 26 may trip. It also leads to damage to the seeder.
FIG. 14A shows a state in which the tips of the teeth of the gear 32 and the tips of the teeth of the missing gear 39 are abutted. The part that is abutted by the arrow G is shown. In the present embodiment, since the hole in the portion for fixing the shaft 31 of the seeding roll 30 to the seeding part frame 36 is a long hole, the vertical transmission of the excessive transmission force from the toothless gear 39 just before this collision occurs. The gear 32 can escape upward (gap 37) together with the shaft by the direction component. FIG. 14B shows a state where the shaft 31 of the sowing roll 30 has escaped upward.
FIG. 14 is a view in which the viewing angle is changed as viewed from the downstream side (front side) in the transport direction A. FIG. FIG. 15 (a) corresponds to FIG. 14 (a) in a state where the tip of the tooth of the gear 32 and the tip of the tooth of the toothless gear 39 have occurred, and FIG. FIG. 14B shows a state of escape. As shown in FIG. 15, in this embodiment, a flanged bearing 25 is attached to the shaft 31 of the seeding roll 30, and it is fitted into a long hole so that the bearing is allowed to move freely. Therefore, rotation also becomes smooth, and it is possible to avoid problems due to the collision between the tooth tips of the gear 32 and the tooth tips of the toothless gear 39.

Usually, the sowing roll is positioned at the lowest position of the long hole by its own weight, and is not allowed to escape upward by a normal transmission force from the toothless gear 39. After the seeding roll 30 escapes for a moment and the trouble due to this collision is avoided, the seeding roll 30 quickly returns to its original position by its own weight. The seeding roll 30 may be provided with appropriate biasing means and biased downward.
As shown in FIG. 17 (a), the seeding roll shaft is loosely moved by providing a semicircular cutout 71 in the seeding part frame 36 and mounting the bearing 25 thereon, as shown in FIG. May be urged by a spring 67. At this time, the shaft 31 can escape as shown in FIG. Further, as shown in FIG. 17C, the shaft 31 may be fixed to the shaft hole 72 by fitting rubber 68 around the bearing 25. At this time, the shaft 31 can escape by deformation of the rubber 68 as shown in FIG.
In the present embodiment, the sowing roll 30 side (driven side) escapes, but a configuration in which the toothless gear 39 side (primary drive side) escapes may be employed.

As shown in FIG. 18, by using a bearing with a flange, the seeding roll shaft 31 is passed through the hole provided in the seeding part frame 36, the bearing 25 is fitted from both sides, and the C-type retaining ring is fitted into the groove of the shaft 31. The fixing of the sowing roll shaft 31 is complete. With this configuration, assembly can be performed very easily.
Further, the flanged bearing here may be a type in which a thin ring is fitted to the outer ring of the bearing, the outer ring having a flange shape, a sliding bearing in addition to a rolling bearing, or the like.

  In the present embodiment, as for the portion where the shaft 31 of the seeding roll 30 is inserted into the seeding part frame 36, the side (arrow J) where the gear 32 is attached in FIG. In this regard, the side where the gear 32 is not attached (arrow N) can also be allowed to move.

As shown in FIG. 16, an extension conveyor 45 is continuously provided on the downstream side of the present seeder, and a limit switch 54 that detects the pot assembly 4 that has been seeded and is sent downstream is disposed on the conveyor. When the pot assembly 4 reaches the limit switch roller 28 of the extension conveyor 45, the power of the motor 26 is cut off, and the conveyor 10 stops.
In the present embodiment, the seeded pot assembly 4 is taken out from the conveyor 10 and the extension conveyor 45 together with the reversing plate 1, and the seeding operation is continuously performed by sequentially supplying the pot assembly 4.

  In FIG. 16, as described above, the pitch of the pusher 12 is set to be larger than the vertical dimension of the reversing plate 1, so that during the transition from the pot assembly 4 after sowing to the subsequent pot assembly 4. An interval H occurs. It is not necessary to rotate the sowing roll 30 in a portion where sowing is unnecessary as in the interval H. As shown in FIG. 7, the circumferential portion R without the teeth 41 in the toothless gear 39 corresponds to the portion that does not require sowing, that is, the interval H. In the circumferential portion R, the teeth of the gear 32 on the seeding roll 30 side. Since the teeth 41 of the toothless gear 39 do not mesh with 33, the sowing roll 30 stops and sowing is not performed. The arc length of the circumferential portion R is determined according to the pitch of the pusher 12, the conveying speed of the conveyor 10, the diameter of the toothless gear 39, and the rotational speed so as to be completely synchronized with the interval H in FIG.

  FIG. 19 shows the operation of the limit switch. As shown in FIG. 19A, the pot assembly 4 (the reversing plate 1 is not shown) is pushed by the pusher 12 and moved. When the pot assembly 4 moves above the limit switch roller 28 as shown in FIG. 19 (b), the limit switch roller 28 is pushed down below the transport surface V by the pot assembly 4 and the limit switch roller shaft 48. Accordingly, the limit switch 54 disposed at one end of the shaft is opened, and the motor 26 is stopped. FIG. 19C is a view of the state of FIG. 19B viewed from the front in the transport direction A. When the pot assembly 4 is removed, the limit switch roller shaft 48 is lifted up by the action of an urging means (not shown) and returns to the position shown in FIG. Then, the limit switch 54 circuit is closed and the motor 26 starts moving again. In FIG. 16, after placing the pot assembly 4 at the position E of the conveyor 10 and then removing the pot assembly 4 from the position F of the extension conveyor 45, the conveyor 10 moves and seeding begins. When the position F is reached, the conveyor 10 stops, and the pot assembly 4 that has been unpacked and filled is placed on the position E. By repeating this series of operations, the sowing operation proceeds smoothly.

  In the present embodiment, a pot aggregate in which a large number of individual pots formed from a thin film such as paper or paper are connected via a water-soluble adhesive is applied. However, the present invention is not limited thereto, and pot seedlings such as cell trays are grown. It is also possible to apply a box. Moreover, it is good also as a structure which applies a seedling box and the expansion | deployment frame to the pot assembly 4 as it describes in Unexamined-Japanese-Patent No. 2003-125654.

The sowing roll in the present invention comprises a combination of disks provided with seed holes. As in the present embodiment, a disc-shaped spacer can be combined with a disc provided with a seed hole, if necessary.
FIG. 20 schematically shows the arrangement of the seed holes 44 in the sowing roll 30. FIG. 20A shows a form applied to a honeycomb-shaped pot aggregate as in this embodiment. The positions of the seed holes 44 of the feeding rolls 46 are alternately arranged so that the seed holes 44 are arranged in a staggered pattern. It is layered so as to be displaced. FIG. 20B shows a case where the present invention is applied to a grid-like pot aggregate (or pot nursery box), and the seed holes 44 are arranged in a grid pattern in the circumferential direction.
When three seeds are sown in one individual pot 2, as shown in FIG. 20 (c), the feeding roll 46 provided with one seed hole 44 and the feeding roll provided with two seed holes 44 are provided. What is necessary is just to form the arrangement | sequence of the seed hole 44 for 3 grains in combination with the roll 46. FIG. At this time, three seed holes 44 provided on one feeding roll 46 may be combined and overlaid. Further, only the feeding rolls 46 as shown in FIG.
It is of course possible to provide seed alignment grooves in any form of FIG.

It is a side view showing embodiment of this invention. It is a top view showing the pot aggregate | assembly developed by the honeycomb form. It is a figure which shows the structure of a projection board, (a) Top view, (b) It is a side view. It is a figure which shows the structure of an expansion | deployment board, (a) Top view, (b) Side view, (c) Sectional drawing. It is a figure which illustrates the procedure which expand | deploys and inverts a pot aggregate | assembly, (a) Top view, (b)-(d) It is a side view. It is a cross-sectional view which shows the structure of the conveyance part of a seeder. It is a perspective view which shows the structure of a part-tooth gear and a sowing roll. It is a side view which shows the structure of a sowing part. It is a side view which shows the structure of a sowing part. It is a side view which models the malfunction in a sowing part. It is a side view which shows operation | movement of a seed flow control board. It is a figure which models the effect | action of the seed alignment groove | channel of a sowing roll, (a) Front view, (b) Side view, (c) Enlarged view. It is a figure which models the flow of the seed in a seed hopper, (a) Top view, (b) It is sectional drawing. It is a side view which models the collision and escape with a sowing roll and a part-tooth gear. It is a front view which models the collision and escape with a sowing roll and a tooth-missing gear. It is a side view which models typically the relationship between a sowing part and a pot aggregate. It is a side view which shows the example which makes a sowing roll axis | shaft movable. It is a front view which models the state which fixed the seeding roll with the bearing with a flange. It is a figure which illustrates operation | movement of a limit switch, (a)-(b) Side view, (c) It is a front view. It is a schematic diagram which shows the form of a sowing roll. It is a schematic diagram which shows the example of a part-tooth gear.

Explanation of symbols

1 reversal plate, 2 individual pots, 3 projection plate, 4 pot assembly,
5 Protrusions, 6 Unfolding bracket, 9 Seed flow control plate, 10 Conveyor,
11 Transport chain, 12 Pusher, 13 Roller, 14 Fixing bracket,
16 body frame, 17 guide surface, 25 bearing, 28 limit switch roller,
30 sowing roll, 32 gear, 33 gear teeth, 34 seed hopper,
35 guide plate, 36 sowing part frame, 38 scraping brush, 39 toothless gear,
44 seed hole, 45 extension conveyor, 46 feeding roll, 47 spacer,
48 Roller shaft for limit switch, 50 seeds, 55 sowing hole,
56 seed alignment part, 58 long hole, 60 seed gate, 63 seed alignment groove,
A conveyance direction, B conveyance chain rotation direction, C partial gear rotation direction,
D sowing roll rotation direction, E rear position, F front position,
H transport interval, L longitudinal direction, M horizontal pitch of seed hole P sowing position, R circumferential part without teeth, S sowing part,
T Seed gate spacing, V transport surface, W lateral direction,

Claims (8)

In a seeder comprising a seed hopper for storing seeds and a seeding roll provided with a seed hole for feeding seeds in the circumferential direction of the outer peripheral surface,
A member for controlling the flow of seeds is provided in the seed hopper,
A seeder having a seed alignment portion up to a sowing roll. For the seed alignment part,
2. The seeder according to claim 1, wherein a member for controlling the flow of seeds is arranged so as to be aligned with one to two seed layers in the vertical direction. The seeding machine according to claim 1 or 2, wherein a seed alignment groove is provided in a circumferential direction of the seeding roll. A member for controlling the flow of the seed is movable relative to the seed alignment portion;
And it is provided so that rotation is possible, The seeder according to any one of claims 1 to 3 characterized by things. Sowing roll
Combining a disk with a seed hole,
The seeding machine according to any one of claims 1 to 4, wherein power transmission to the seeding roll is performed by a toothless gear. 6. The seeder according to claim 5, wherein the toothless gear has the same number of teeth as the number of individual pots or cells per row in the conveying direction of the pot aggregate or the pot nursery box. The shaft of the sowing roll is mounted on the body of the sowing machine via a bearing,
The seeder according to any one of claims 1 to 6, wherein the shaft is movable together with the bearing. The seeder according to claim 7, wherein the bearing is a bearing with a flange.

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