JP2019208378A - Seeder - Google Patents

Abstract

To provide a seeder capable of achieving uniform dissemination on bed soil while permitting an increase or decrease of an amount dissemination per nursery box in a wider range.SOLUTION: A seeder comprises: a transport device (R) for transporting a nursery box (T) in one direction; and a dissemination device (D) provided on a transport path of the transport device (R). The dissemination device (D) comprises: a seed hopper (31) for containing seeds; and a columnar dissemination delivery rolls (32) which are attached to a lower side of the seed hopper (31) so as to be driven to rotate, and which have on a peripheral surface thereof, a plurality of delivery recesses at a prescribed interval. The seeder is configured to rotationally drive the dissemination delivery rolls (32), deliver the seeds contained in the seed hopper (31) from the delivery recesses and fall the seeds on bed soil in the nursery box (T) to perform dissemination. A plurality of dissemination delivery rolls (32) are provided and are configured so that they have different amounts of seed delivery per unit time at a prescribed rotary speed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seeder equipped with a sowing roll for feeding seeds.

  This type of sowing machine is used to produce seedling mats used in rice planting work by a rice transplanter, for example, sowing seed pods on floor soil, and transporting a rectangular seedling box While transporting in one direction by the device, various devices provided on the transport path of the transport device can spread floor soil on seedling boxes, irrigate the floor soil, sowing seeds such as seed pods, and covering soil on seed pods. It is comprised so that it may implement sequentially (for example, refer patent document 1). Here, the sowing machine is equipped with a sowing device for sowing seeds such as seed pods, and conventionally, this sowing device has a cylindrical sowing feeding roll in which a plurality of feeding recesses are provided at predetermined intervals on the peripheral surface. By rotating the seed, the seed is dropped from the feeding recess on the lower side of the sowing feeding roll, and seeded on the floor soil in the seedling box (see, for example, Patent Document 2). And by variably adjusting the rotation speed of the sowing feed roll, the seed feed amount per unit time can be increased or decreased, and the sowing amount per seedling box T can be adjusted (for example, Patent Document 3). reference).

JP 2012-244501 A JP 2009-95250 A JP 2013-74828 A

  However, according to the configuration in which the rotation speed of the seeding feeding roll is variably adjusted, when the rotation speed is reduced in order to reduce the seeding amount per seedling box T, it is provided in a horizontal straight line in parallel with the axis of the seeding feeding roll. The seeds that are fed out from the drawn out recesses have a longer time interval for being fed out intermittently, so that uniform seeding on the floor soil becomes difficult. As a result, for example, in mat seedlings produced by sowing seed pods, there are no seedlings through which the scraping claws of the rice transplanter pass, and there are places where seedlings are not scraped off, and there are missing seedlings at the time of planting A problem arises. Therefore, it has been difficult to reduce the seeding amount from a certain amount while performing uniform seeding on the floor soil. In addition, if the rotational speed is increased to increase the seeding amount per seedling box, the filling rate of seeds in the feeding recesses will deteriorate, so the seeding amount can be reduced while performing uniform seeding on the floor soil. It was difficult to increase more than a certain amount. As described above, the conventional seeder has room for improvement in that the seeding amount per seedling box can be increased / decreased in a wider range by the seeding device, and uniform seeding on the floor soil is realized. Existed. Then, this invention aims at providing the seeding machine which implement | achieves uniform seeding | floating on floor soil, enabling the seeding amount per one seedling box to be increased / decreased in a wider range.

The purpose of the present invention is to convey a nursery box (T) in one direction,
A seeding device (D) provided on the transport path of the transport device (R),
The seeding device (D) includes a seed hopper (31) for storing seeds;
The seed hopper (31) is rotatably mounted below the seed hopper, and includes a cylindrical seeding and feeding roll (32) provided with a plurality of feeding recesses at predetermined intervals on the circumferential surface,
By rotating the sowing feeding roll (32), the seed stored in the seed hopper (31) is fed out from the feeding recess and dropped on the floor soil in the seedling box (T) for seeding. A seeding machine,
A plurality of the sowing and feeding rolls (32) are provided, and are achieved by a sowing machine configured so that the amount of seeds fed per unit time at a predetermined rotational speed is different.

  According to the present invention, a plurality of the sowing feeding rolls (32) of the sowing apparatus (D) are provided, and the seed feeding amount per unit time at a predetermined rotational speed is different from each other. Thus, the sowing amount per seedling box can be increased or decreased in a wider range regardless of the increase or decrease in the rotation speed of the sowing feeding roll (32). In addition to this, conventionally, uniform seeding on the floor soil has been impaired by the increase / decrease in the rotation speed of the sowing and feeding roll (32), but the present invention increases and decreases the rotation speed of the sowing and feeding roll (32). Regardless of this, the sowing amount can be adjusted, so that uniform sowing on the floor soil can be realized.

In a preferred embodiment of the invention,
The seeding feeding roll (32) is provided on the lower side in the transport direction of the seedling box (T) with respect to the first seeding feeding roll (32a) and the first seeding feeding roll (32a). The first seeding and feeding roll (32b) is constituted by a seeding and feeding roll (32b). The first seeding and feeding roll (32a) and the second seeding and feeding roll (32b) are driven to rotate in different directions, and the first seeding and feeding roll is provided. It is configured to feed seeds toward the outside of the roll (32a) and the second sowing feed roll (32b).

  According to this preferred embodiment of the present invention, the first seeding and feeding roll (32a) and the second seeding and feeding roll (32b) are rotationally driven in different directions, and the first seeding and feeding roll (32b) is rotated. Since the seed is fed out toward the outside of the feeding roll (32a) and the second sowing feeding roll (32b), the seed feeding portion that is likely to require maintenance is the first sowing feeding. It becomes the outside of the roll (32a) and the second seeding and feeding roll (32b), thereby improving the maintainability.

  ADVANTAGE OF THE INVENTION According to this invention, the seeding machine which can implement | achieve uniform sowing on a floor soil can be provided, making it possible to increase / decrease the seeding amount per seedling box in a wider range.

1 is a schematic side view of a seeder according to a preferred embodiment of the present invention. It is a block diagram which shows the control system and drive system of the seeder of FIG. It is a flowchart which shows the control flow of the control part of FIG. It is a vertical side view of the sowing apparatus of FIG. (A) It is an enlarged view of the front seeding | feeding delivery roll of the seeding apparatus of FIG. (B) It is an enlarged view of the rear part sowing | feeding roll of the sowing apparatus of FIG. It is a figure which shows another Example of the sowing apparatus of FIG.

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
FIG. 1 is a schematic side view of a seeder according to a preferred embodiment of the present invention.
As shown in FIG. 1, the seeder 1 has a transport conveyor R for placing and transporting the seedling box T, and the transport direction H of the seedling box T across the transport path of the transport conveyor R from the upper side. A driving device A that drives the transport conveyor R, a floor soil device B, a irrigation device C, a seeding device D, and a soil covering device E are provided, and a weighing device F is provided on the transport end side of the transport conveyor R. Is provided.

  In addition, each apparatus of the floor soil apparatus B, the irrigation apparatus C, the seeding apparatus D, the soil covering apparatus E, and the measuring apparatus F is comprised so that it can install independently independently of another apparatus.

  The driving device A is a driving mechanism that drives the driving roller and the conveyor belt provided in the conveyor R to exert the conveying function of the conveyor R.

  The bed soil device B is a device that spreads the bed soil on the seedling box T, and feeds the bed soil tank 11 for storing the soil to be the bed soil, and the bed soil in the bed soil tank 11 by a predetermined amount. A floor soil feeding belt 12 which is a floor soil feeding tool that is dropped and supplied to the seedling box T and a floor soil feeding motor 13 that drives the floor soil feeding belt 12 are provided. The floor soil feeding motor 13 of the floor soil device B is electrically connected to a control unit 61 to be described later, and the amount of floor soil fed per seedling box T is controlled by inverter control of the floor soil feeding motor 13. It is provided to be controllable.

  The irrigation device C is a device that irrigates the floor soil in the seedling box T, and is configured to uniformly spray a predetermined amount of water onto the floor soil in the seedling box T by the irrigation pipe 21. The irrigation apparatus C includes an electromagnetic valve (not shown) that can adjust the irrigation amount, and this electromagnetic valve is electrically connected to a control unit 61 described later. Thereby, the irrigation amount per one seedling box T can be controlled by inverter control of a solenoid valve (not shown) connected to the irrigation pipe 21.

  The seeding device D is a device that seeds seedling boxes T with seeds. In the following explanation, rice seed pods are assumed as seeds. The seeding device D is provided with a seed hopper 31 for storing seeds in the upper part, and the seed hopper 31 is divided into a front seed hopper 31a and a rear seed hopper 31b by a partition plate 32 whose partition position can be switched. It has a configuration.

  The seeding device D includes a seeding feeding roll 32 that intermittently feeds seeds stored in the seed hopper 31 by a predetermined amount and seeds the seedling box T. The sowing and feeding roll 32 has a cylindrical shape, and is rotatably driven at the lower end of the front seed hopper 31b and the front sowing and feeding roll 32a that is rotatably mounted on the lower end of the front seed hopper 31a. The rear sowing feeding roll 32b is mounted.

  On the peripheral surface of the front sowing feeding roll 32a, a plurality of horizontal straight feeding recesses 35a are provided at predetermined intervals in parallel with the axial direction of the front sowing feeding roll 32a.

  Further, a plurality of laterally straight feeding recesses 35b are provided at predetermined intervals in parallel with the axial direction of the rear sowing feeding roll 32b on the peripheral surface of the rear sowing feeding roll 32b.

  As a result, the sowing apparatus D rotationally drives the front sowing feeding roll 32a and the rear sowing feeding roll 32b, and feeds the soot seeds from the feeding recess 35a and the feeding recess 35b, and these are placed and conveyed on the conveyor R. It is configured to drop the seedling box T and sow.

  In addition, the seeding device D is electrically connected to a control unit 61 to be described later, and is an inverter of a front sowing motor 33a that drives the front sowing feeding roll 32a and a rear sowing motor 33b that drives the rear sowing feeding roll 32b. The front seeding / feeding roll 32a and the rear seeding / feeding roll 32b are normally configured to rotate at a predetermined rotational speed by the control, but the front seeding / feeding roll 32a and the rear part are controlled by the control unit 61 described later. The rotational speed of the seeding feeding roll 32b is provided so that it can be variably adjusted.

  The soil covering device E is a device that covers the seeds that have been sown. The soil covering tank 41 that stores the soil to be covered with soil, and the soil covering in the soil covering tank 41 are fed out by a predetermined amount and dropped onto the seedling box T. A covering soil feeding belt 42 as a covering soil feeding tool to be supplied and a soil covering motor 43 for driving the soil covering feeding belt 42 are provided. Moreover, the soil covering motor 43 of the soil covering apparatus E is electrically connected to a control unit 61 to be described later, and is provided so that the amount of covering soil per seedling box T can be controlled by inverter control of the soil covering motor 43. It has been.

  The weighing device F is a transfer conveyor provided with a load cell 51 capable of measuring the total weight of the seedling box T, and is provided on the transfer end side of the transfer conveyor R. Thus, the weighing device F measures the weight of the seedling box T that has been transported to the transport terminal side of the transport conveyor R, and information about this measurement value can be acquired by the control unit 61 described later. The control unit 61 can count the number of seedling boxes T that have been sowed by counting the number of times measurement value information is acquired. The weighing device F is provided so as to be separable from the conveyor R. Thereby, when not using the measuring apparatus F, the measuring apparatus F can be removed from the seeder 1, and workability | operativity can be improved.

FIG. 2 is a block diagram showing a control system and a drive system of the seeding machine 1.
The seeding machine 1 includes an operation panel G. The operation panel G controls the operation of the seeding machine 1, the operation part 62 composed of switches that accept the operation of the operator, and the sound output A voice output unit 63 including a possible speaker, a liquid crystal display unit 64 that outputs the operation contents of the operation unit 62, a number display unit 65 that outputs the number of seedling boxes T measured by the weighing device F, and various programs And a storage unit 66 storing data.

  The control unit 61 includes a microcomputer including a CPU, a ROM, and a RAM, and is electrically connected to the driving device A, the floor soil device B, the irrigation device C, the seeding device D, and the soil covering device E. Thereby, the control unit 61 drives the driving device A, the amount of floor soil supplied by the bed soil device B per seedling box T, the amount of water supplied by the irrigation device C, the amount of seed supplied by the seeding device D, and the soil covering. The amount of covering of the device E can be controlled.

  Further, the seeder 1 is operated by the operation unit 62 by the operator, and the amount of floor soil fed by the floor soil device B per seedling box T, the amount of water supplied by the irrigation device C, and the seed feeding by the seeder D The amount of covering and the amount of covering of the soil covering device can be set, and information on a desired setting value set by the operator can be stored in the storage unit 66 as setting information. The unit 61 obtains the setting information stored in the storage unit 66, and feeds the floor soil of the floor soil device B per one seedling box T, the water supply amount of the irrigation device C, and the seeds of the seeding device D. It is configured to automatically control the feeding amount and the covering amount of the soil covering device E, respectively.

  In addition, when the control unit 61 obtains the measurement value information from the weighing device F, the weight of the seedling box T is displayed on the liquid crystal display unit 64 from the measurement value information, and the weighing device F is displayed on the number display unit 65. The number of seedling boxes T measured by is displayed.

  Thereby, the operator knows the weight of the seedling box T which has been seeded by the seeder 1 by the display of the liquid crystal display unit 64, and based on this, the floor soil apparatus B per seedling box T is obtained. It is possible to set and adjust the amount of floor soil fed, the amount of irrigation of the irrigation device C, the amount of seed sowing of the seeding device D, and the amount of soil covering of the soil covering device E.

FIG. 3 is a flowchart showing a control flow by the control unit 61 of the seeding machine 1.
First, the controller 61 feeds the floor soil of the floor soil device B per seedling box T, the irrigation amount of the irrigation device C, the feed amount of the sowing seed of the seeding device D, and the feed amount of the soil covering of the soil covering device E. The setting value information is acquired by the operation of the operation unit 62 by the operator, and is stored as setting information in the storage unit 66 (steps S1 to S4).

  The seeding machine 1 acquires the setting information stored in the storage unit 66 while transferring the seedling box T by the transfer device D, and determines the control amount based on the acquired setting information, while on the transfer path of the transfer device D. By various devices provided in the above, the floor soil is spread on the seedling box T, the irrigation to the floor soil, the sowing of the seed pods, and the covering of the seed pods are sequentially performed (step S5). Next, when the seedling box T is transported to the transport end side, the control unit 61 obtains the measured value of the weight of the seedling growing box T measured by the weighing device F from the weighing device F (step S6).

  Next, the control unit 61 displays the weight of the seedling raising box T on the liquid crystal display unit 64, and the operator who has confirmed this displays the amount of floor soil fed by the floor soil device B per one seedling raising box T, Whether or not to reset the irrigation amount of the irrigation device C, the seeding amount of the seeding device D, and the covering amount of the soil covering device E is selected by the operation unit 62 (step S7).

  When re-setting is selected, the amount of floor soil delivered by the floor soil device B per seedling box T, the amount of irrigated water by the irrigation device C, the amount of seed seeded by the seeding device D, and the soil covering by the soil covering device E are again selected. Is set again, and the reset setting information is stored in the storage unit 66 (steps S1 to S7). Thus, the operator can reset and repeatedly adjust the feeding amounts and the like of various apparatuses until the seedling growing box T reaches a desired weight.

  When the setting is completed and resetting is not selected, the transport device D is provided on the transport path of the transport device D based on the set value stored in the storage unit 66 while transporting the seedling box T. The various devices are used to sequentially spread the floor soil on the seedling box T, irrigate the floor soil, sowing seed pods, and cover the seed pods (step S8). When the weight of T is measured, information on the measured value is obtained each time (step S9), the weight of the seedling box T is displayed on the liquid crystal display unit 64 (step S10), and the number of seedling boxes T is counted. Is displayed on the number display unit 65 (step S11), and the voice output unit 63 outputs the counted number of seedling boxes T by voice (step S12). The audio output by the audio output unit 63 may be configured to be performed every predetermined number, for example, every 100 sheets.

  Next, the control unit 61 determines whether or not the end of the sowing work has been selected by the operation of the operation unit 62 by the operator (step S13). Control unit 61 repeats steps S8 to S13 until the end of the sowing operation is selected. When the sowing end is selected by the operator, the control unit 61 controls to end the operation of the seeding machine 1.

FIG. 4 is a vertical side view of the seeding device of FIG. 1.
The partition plate 32 is disposed inside the seed hopper 31, functions to divide the front seed hopper 31a and the rear seed hopper 31b, and switches the partition position by rotating the upper end side with the lower end as a fulcrum. It is provided as possible. As shown in FIG. 4, the partition plate 32 is one of a forward tilt position (a) in a forward tilt position, a neutral position (b) in a substantially vertical position, and a rear tilt position (c) in a rear tilt position. It is possible to switch to. In addition, about the switching method of the partition position of the partition plate 32, it is good also as a manual type or an electric type.

  Here, at the time of sowing feeding by driving the sowing apparatus D, the front sowing feeding roll 35a rotates in the counterclockwise direction (forward direction) in FIG. 4, and the rear sowing feeding roll 35b rotates in the clockwise direction (reverse direction). ) To rotate. This prevents interference with the seed pods fed from the front sowing feed roll 35a and the rear sowing feed roll 35b, enables uniform sowing on the floor soil, and feeds the seed pods outward, thereby raising the seedlings. It becomes easy to sow seed pods to the corner of the box T. In addition, since the front sowing feeding roll 35a and the rear sowing feeding roll 35b are configured to feed the seeds toward the outside with different rotation directions, the part for feeding the seeds that are likely to require maintenance is located on the outside. Thus, maintenance is facilitated.

  Further, the seeding device D is configured to be able to rotate and drive either the front sowing feeding roll 35a or the rear sowing feeding roll 35b by operating a changeover switch provided in the operation unit 62. Yes. Therefore, although the partition plate 32 is normally set to the neutral position (b), when only the front sowing feeding roll 35a is rotated, the partition plate 32 is set to the rearward tilt position (c) that assumes the rearward tilt posture. For example, since the volume of the front seed hopper 31a that consumes seeds is expanded, convenience is improved. In addition, when only the rear sowing feeding roll 35b is rotated, the volume of the rear seed hopper 31b that consumes seeds is increased if the partition plate 32 is set to the forward inclined position (a) in the forward inclined posture. Will improve.

  Further, removal brushes 34a and 34b are provided on the upper side in the rotational direction of the front sowing and feeding roll 35a and the rear sowing and feeding roll 35b, respectively, for scraping off and removing the soot seeds overflowing from the feeding recess 35a. The removal brushes 34a and 34b are configured such that the front sowing feeding roll 35a rotates in the counterclockwise direction (forward direction) and the rear sowing feeding roll 35b rotates in the clockwise direction (reverse direction). Is also provided on the outside of the front sowing feed roll 35a and the rear sowing feed roll 35b, thereby facilitating maintenance.

  Note that the inside of the seed hopper 31 is divided into a front seed hopper 31a and a rear seed hopper 31b by a partition plate 32, and seeds stored in the front seed hopper 31a are fed out by a front sowing feeding roll 35a. Since seeds stored in the seed hopper 31b are fed out by the rear sowing feed roll 35b, it is possible to feed out different seeds from the front sowing feed roll 35a and the rear sowing feed roll 35b. Yes. In this case, the seeder 1 stores different seeds in the front seed hopper 31a and the rear seed hopper 31b, respectively, and rotates any one of the front sowing feeding roll 35a or the rear sowing feeding roll 35b. By driving, it is possible to respond quickly to sowing of a variety of seeds.

  Fig.5 (a) is an enlarged view of the front sowing feeding roll 32a of the sowing apparatus D of FIG. 4, and FIG.5 (b) is an enlarged view of the rear sowing feeding roll 32b of the sowing apparatus D of FIG. . The front sowing feed roll 32a is provided with a larger diameter than the rear sowing feed roll 32b, and as an example, the diameter R is about 80 mm. In addition, the feeding recess 35a of the front sowing feeding roll 32a has a width α of about 9 mm and a depth β of about 5 mm, and an interval γ between the feeding recesses 35a is about 20 mm. Further, the number of feeding recesses 35a of the front sowing feeding roll 32a is eight.

  Further, the rear sowing feed roll 32b is provided with a smaller diameter than the front sowing feed roll 32a, and as an example, the diameter R ′ is about 60 mm. Further, the feeding recess 35b of the rear sowing feeding roll 32b has a width α ′ of about 10 mm and a depth β ′ of about 6 mm, and an interval γ ′ between the feeding recesses 35b is about 6 mm. Moreover, the feeding recesses 35b of the rear sowing feeding roll 32b are twelve.

  Thus, the front sowing feed roll 32a is provided with a larger diameter than the rear sowing feed roll 32b, and the width α and the depth β of the feed recess 35a of the front sowing feed roll 32a are provided small and fed. Since the interval γ between the recesses 35a is large and the number of the feeding recesses 35a is small, a small amount of seeding is possible with respect to the rear sowing feeding roll 32b, so-called sowing with a rough sowing per unit area of the floor soil. It is possible.

  Further, the rear sowing feeding roll 32b is provided with a smaller diameter compared to the front sowing feeding roll 32a, and the width α ′ and the depth β ′ of the feeding recess 35a of the rear sowing feeding roll 32b are provided larger, and the feeding recess 35b. Since the interval γ ′ is small and the number of the feeding recesses 35b is large, a large amount of seeding is possible with respect to the front sowing feeding roll 32a, so-called thick sowing with fine sowing per unit area of floor soil. It is possible.

  With such a configuration, the front sowing feeding roll 32a and the rear sowing feeding roll 32b are configured so that the amount of seeds fed per unit time at a predetermined rotational speed is different. By rotating only the front sowing feeding roll 32a at the rotational speed of the seedling, it is possible to cope with a small amount of sowing, and by rotating only the rear sowing feeding roll 32b at the predetermined rotational speed, the seeding is performed at a large quantity. Furthermore, by simultaneously rotating the front sowing feed roll 32a and the rear sowing feed roll 32b to perform sowing, it is possible to cope with high-density sowing. As a result, the sowing amount per seedling box can be increased or decreased over a wider range regardless of the increase or decrease in the rotation speed of the sowing feed roll (32).

  Furthermore, since the sowing amount can be adjusted regardless of the increase / decrease in the rotation speed of the sowing feeding roll (32), more uniform sowing on the floor soil is possible. Moreover, in the case of high-density sowing in which seeding is performed by simultaneously rotating the front sowing feeding roll 32a and the rear sowing feeding roll 32b, thin seeding with the front sowing feeding roll 32a is performed first on the seedling growing box T. Therefore, more uniform sowing is possible.

  In addition, the seeding device D can change the rotation speed of the front sowing feeding roll 32a and the rear sowing feeding roll 32b by operating the operation unit 62 as necessary. The seeding amount per seedling box T can be increased or decreased in a wider range.

  The present invention is not limited to the above embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  For example, in the embodiment, as shown in FIG. 4, the front sowing feeding roll 35 a rotates in the counterclockwise direction (forward direction), and the rear sowing feeding roll 35 b rotates in the clockwise direction (reverse direction). However, the rotation direction of the front sowing feeding roll 35a and the rear sowing feeding roll 35b may be freely switched by the operation of the operation unit 62, as shown in FIG. As described above, both the front sowing feed roll 35a and the rear sowing feed roll 35b may be configured such that the front sowing feed roll 35a rotates in the counterclockwise direction (forward direction).

  Moreover, when comprised so that the rotation direction of the front seeding | feeding roll 35a and the rear seeding | feeding roll 35b can be switched freely, as FIG. 6 shows, removal brush 34a, 34b is set to the front seeding | feeding roll 35a. And you may provide in the side surface both sides, ie, both the outer side and the inner side, respectively, of the rear sowing feeding roll 35b. As a result, it is possible to suitably remove the seeds in both the forward and reverse rotations.

  5 (a) and 5 (b), the rear sowing feed roll 32b is provided with a larger diameter than the front sowing feed roll 32a, and the width α ′ of the feed recess 35a of the rear sowing feed roll 32b, The depth β ′ is large, the interval γ ′ between the feeding recesses 35a is small, and the number of feeding recesses 35b is large. For example, as shown in FIG. 6, the front sowing feeding roll 32a and the rear sowing feeding roll 32b can be provided with the same diameter. Further, the width α and depth β of the feeding concave portion 35a of the front sowing feeding roll 32b, the interval γ ′ between the feeding concave portions 35b, the width α ′ and the depth β ′ of the feeding concave portion 35b of the rear sowing feeding roll 32b, and feeding. The magnitude relationship with the interval γ ′ between the recesses 35b can also be changed flexibly. Moreover, it is changeable also about the number of the feeding recessed parts 35a of the front seeding | feeding roll 32a, and the number of the rear seeding | feeding roll 32b feeding recessed parts 35b.

  Moreover, in FIG.1 and FIG.4, the seed hopper 31 is divided into 2 by the partition plate 32, The front sowing | feeding feed roll 32a attached to the lower end of the front seed hopper 31a rotatably, and the lower end of the rear seed hopper 31b However, the dividing method of the seed hopper 31 is not limited to two. For example, the seed hopper 31 is divided into three parts, a front part, a middle part, and a rear part, by a partition plate, and feed rolls having different seed feed amounts per unit time at a predetermined rotational speed are provided at the lower ends of the hoppers. It can also be configured. Thereby, the seeding amount per seedling box can be increased or decreased in a wider range.

A drive device B floor soil device C irrigation device D seeding device E soil covering device F weighing device G operation panel R transport conveyor T seedling box 11 floor soil tank 12 floor soil delivery belt 13 floor soil delivery motor 21 irrigation pipe 31 seed hopper 31a front Part seed hopper 31b Rear seed hopper 32 Seeding feeding roll 32a Front sowing feeding roll 32b Rear sowing feeding roll 33a Front sowing motor 33b Rear sowing motors 34a, 34b Removal brushes 35a, 35b Feeding recess 41 Covering tank 42 Covering feeding belt 43 Covering soil Motor 51 Load cell 61 Control unit 62 Operation unit 63 Audio output unit 64 Liquid crystal display unit 65 Number display unit 66 Storage unit

Claims (2)

A transport device (R) for transporting the seedling box (T) in one direction;
A seeding device (D) provided on the transport path of the transport device (R),
The seeding device (D) includes a seed hopper (31) for storing seeds;
The seed hopper (31) is rotatably mounted below the seed hopper, and includes a cylindrical seeding and feeding roll (32) provided with a plurality of feeding recesses at predetermined intervals on the circumferential surface,
By rotating the sowing feeding roll (32), the seed stored in the seed hopper (31) is fed out from the feeding recess and dropped on the floor soil in the seedling box (T) for seeding. A seeding machine,
A plurality of the sowing and feeding rolls (32) are provided, and the sowing machine is configured so that the amount of seeds fed per unit time at a predetermined rotational speed is different.   The seeding feeding roll (32) is provided on the lower side in the transport direction of the seedling box (T) with respect to the first seeding feeding roll (32a) and the first seeding feeding roll (32a). The first seeding / feeding roll (32b) is constituted by a seeding / feeding roll (32b), and the first seeding / feeding roll (32b) is rotationally driven with different rotation directions, and the first seeding / feeding roll The seeder according to claim 1, wherein the seeder is configured to feed seeds toward the outside of the roll (32a) and the second seeding and feeding roll (32b).