JPS6366484B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field) The present invention is a method of attaching seeds of agricultural crops to a tape made of a water-soluble material or a material that decomposes in soil at regular intervals.
This invention relates to a seed string manufacturing device that manufactures seed strings wrapped in a substantially constant number.

(Background Art) By burying the aforementioned seed string in soil at a depth suitable for the seeds in the seed string, ideal sowing can be performed without relying on conventional sowing operations.

Therefore, a seed string manufacturing apparatus for manufacturing such seed strings has already been developed and is in use.

However, conventional equipment has already been improved to its limits in production speed and accuracy, and it is difficult to produce seed strings faster and in larger quantities with existing equipment.

The basic structure of such a conventional seed string manufacturing apparatus will be explained with reference to FIG.

FIG. 1 is a sectional view and a plan view of a conventional seed string manufacturing apparatus.

An endless belt 2 provided with a number of holes 1 at regular intervals is run at a constant speed over the bottom 4 of a hopper 3 containing seeds.

The tape 6 is run below the position where the endless belt 2 is pulled out from the hopper 3, and the seeds 5 fitted into the holes 1 of the endless belt 2 are successively dropped onto the tape 6. It is configured.

After the seeds are rolled into the tape, it is processed into a string.

Seed spacing (plant spacing) of the seed string created in this way
is determined by the hole pitch provided in the endless belt and the running speed of the belt and the tape running below.

Therefore, in order to increase the production speed of seed string with such a device, it is necessary to simultaneously increase the speed of the belt and the tape.

When the speed of the belt is increased, there is a problem that the position where the seeds fall on the tape is not constant.

Furthermore, if the tape speed is high, when seeds fall onto the tape, they may be bounced off by the running tape, creating the possibility of seedless plants.

For these reasons, there is a limit to the seed string production speed that can be achieved with conventional equipment.

(Objective of the Invention) The object of the present invention is to eliminate the above-mentioned drawbacks by a novel structure, to accurately place a fixed number of seeds at regular intervals on a running tape, and to spread seed strings at a much faster speed than conventional devices. An object of the present invention is to provide a seed string manufacturing device that can manufacture seed strings.

(Structure of the Invention) In order to achieve the above-mentioned object, a seed string manufacturing device according to the present invention comprises a cylindrical portion and a side wall surface, in which a seed carrying groove is provided in a part so as to pass through the cylindrical surface. a fixed-side drum having a storage space; and a support structure that supports the fixed-side drum so that the center axis of the cylindrical part is horizontal and the seed delivery groove is located on one side of the lowest position of the cylindrical part. , a rotatable cylindrical part contacts the cylindrical part of the stationary drum from the outside, and a large number of holes for receiving seeds are continuously provided on the circumference of the cylindrical part corresponding to the seed ejection groove. a rotating drum; a drive motor that drives the rotating drum in a direction in which its cylindrical portion rotates from the lowest position of the stationary drum in a direction toward the seed delivery groove; and a drive motor that supplies seeds to a space within the stationary drum. a seed hopper disposed outside the cylindrical portion of the rotary drum at a position corresponding to the ejecting groove so that the seeds inserted into the holes in the cylindrical portion of the rotary drum in the ejecting groove do not fly outward; and an outer peripheral surface of the cylindrical portion of the rotating drum so as to cover the hole portion of the rotating drum from the upper end of the outer guide plate to a position corresponding to the lowest position of the fixed drum. tape feeding means for feeding the tape in close contact with the drum and moving the tape in a substantially horizontal direction from that position; and pulling out the tape on which the seeds received from the hole in the cylindrical portion of the rotary drum are placed at the lowest position of the fixed drum. It consists of a seed string forming device that binds together and forms seed strings.

(Example) Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

The embodiment of the seed string manufacturing device according to the present invention basically comprises a seed distributing device, a tape conveying device, and a seed string forming device.

The seed distribution device consists of a stationary drum, a rotating drum, and an outer guide plate.

FIG. 2 is a perspective view showing the stationary drum of the seed distributing device in a developed manner.

FIG. 3 is a perspective view showing the relationship between the stationary drum and the rotating drum of the seed distributing device, partially cut away to show the internal structure.

FIG. 4 is a diagram schematically showing the overall configuration. As shown in FIG. 2, the stationary drum of the seed distributing device is composed of a cylindrical portion 11, a guide frame 12 fixed inside the cylindrical portion 11, a circular side plate 13, and a half-moon side plate 14. An outer guide plate 16 is integrally provided thereto.

These structures have a support structure (not shown) such that the central axis of the cylindrical portion 11 of the stationary drum is horizontal and the seed ejection groove 15 is located on one side of the lowermost portion of the cylindrical portion. It is fixed to the machine frame.

The peripheral side plate 11 and guide frame 12 of this fixed side drum
Seeds 3 are placed from the hopper 44 (see FIG. 4) into the space surrounded by the circular side plate 13 and the half-moon side plate 14.
When the seed 30 is inserted, the seeds 30 move downward toward the discharge groove 15 along the guide frame 12 having an inclination of about 45 degrees.

As shown in FIG. 3, the rotating drum of the seed distributing device is a cylindrical portion 22 of a ring-shaped belt that is attached to the peripheral rim of a rotating disk 21 by screws 24 and rotates together with the disk 21. It consists of

This cylindrical portion 22 is provided with a large number of square holes 23 for storing a certain number of seeds, rotating them, and transferring them to a tape to be described later.

The rotary drum of this seed distribution device has its cylindrical portion 22 rotatably fitted in contact with the outside of the cylindrical portion 11 of the stationary drum of the seed distribution device.

The hub 25 provided at the center of the rotating disk 21 is
The rotary drum is fixed to a shaft 29 of a variable speed motor 27 provided on the fixed part side of the seed distribution device, and the rotary drum is rotated by this motor 27.

Note that 29 is a gear transmission section of the motor 17.

The cylindrical portion 22 includes the cylindrical portion 1 of the stationary drum.
A large number of holes 23 are provided at equal intervals at positions corresponding to one carry-out groove 15.

For the ring-shaped belt forming the cylindrical portion 22, a synthetic resin material is selected and used, which is less likely to generate static electricity due to friction during rotation, and which allows easy machining of the large number of holes 23.

Static electricity is generated due to friction during rotation of the ring-shaped belt forming the cylindrical portion 22. Seeds are attracted to unwanted places due to the static electricity and are trapped in the numerous holes 23.
This is because there is a possibility that the seeds will not be properly stored and the accurate delivery of the seeds will be hindered.

In addition, the shape and size of the numerous holes 23 in the ring-shaped belt of the cylindrical portion 22 need to be changed depending on the type of seeds, such as round or elongated shapes, differences in size, and the desired spacing between plants. There is.

In order to manufacture seed strings for many types of seeds using the same device, it is necessary to prepare a large number of ring-shaped belts with different shapes for each seed, so it is necessary to select a material that allows easy hole processing. There is.

Next, the overall configuration and operation will be further explained with reference to FIG.

After the seeding tape 31 is unwound from the reel 32, it is rolled along the cylindrical part 22 at the position of the guide roller 33, in the same direction as the rotation of the cylindrical part 22, to the vicinity of the lower position of the cylindrical part 11 of the stationary drum. They are being driven while touching each other.

Seeds 30 are supplied to the seed storage space of the stationary drum by a seed quantitative supply device (not shown) provided at the seed supply port 43 of the seed hopper 44.

A seed level sensor is disposed at a position indicated by 42 in the seed storage space in the fixed drum, and this seed level sensor detects the level of seeds 30 in the container and opens the seed supply port of the seed hopper 44. 43
A seed quantitative supply device provided in the space is operated to constantly supply a substantially constant amount of seeds to the space.

The cylindrical portion 22 of the rotating drum is moved clockwise while its inner surface contacts the seeds 30 in the fixed drum 11 at the portion of the carry-out groove 15 of the cylindrical portion 11 of the fixed drum.

During the movement, seeds enter the holes 23 of the cylindrical portion 22 and are carried toward the upper left in FIG. 4.

The seed restrained in the hole 23 has the cylindrical part 2
Because of the circular force caused by the circular motion of 2, a force is initially applied in the direction of the outer guide 16 and then in the direction of the tape 31.

The seed tape 31 is supplied from the tape reel 32 to the guide roller 33 disposed at the upper end position of the outer guide 16, and runs on the outside of the hole 23 that accommodates the seeds in the cylindrical part 22, covering the surface of the cylindrical part 22. is moved in the same direction as the rotation of.

The traction force of this tape 31 is supplied from a seed string shaping device which will be described later.

Since the inside of the hole 23 of the cylindrical portion 22 of the rotating drum is rotated in contact with the cylindrical portion 11 of the fixed drum, the seeds 30 accommodated in the hole 23 are accommodated in the hole 33 of the cylindrical portion 22 as the rotating drum rotates. It is rotated clockwise in the figure and transported.

From when the tape 31 reaches the lowest position, the tape 31 separates from the cylindrical portion 22 and runs horizontally.

At this time, the seeds 33 housed in the holes 23 of the cylindrical portion 22 are pressed against the tape 31 by their own weight and the centripetal force due to rotation, and are moved away from the holes 23 and onto the surface of the tape 31.

One of the most important aspects of the device according to the invention is that the seeds 30 are accurately transferred to the tape 31 at a position below the stationary drum.

Furthermore, when the seeds stored in the holes 23 of the cylindrical portion 22 reach the lowest position and leave the holes 23 and transfer to the tape, they may get caught on the edge of the holes 23, and the placement position on the tape may shift. .

Therefore, in order to prevent this, the cylindrical part 1 of the fixed side drum
A hole 17 is provided near the bottom of the belt 1, and when the seed reaches this position, push it downward (toward the outside of the belt) with a push spring 18 from inside the hole 23 of the belt to ensure that the seeds leave the hole 23 and transfer to the tape. do.

The tape 31 on which the seeds 30 are arranged at predetermined intervals in this manner is sent to the seed string shaping device 35 through the V-shaped shaping guide frame 34.

An example of the configuration of the seed string shaping device 35 is shown in FIG.

When the seeds 30 arranged in a fixed number and at fixed intervals on the surface of the tape 32 pass through the holes of the guide trough holding plate 36, they are wound around the tape and bound by the binding string 37, forming a seed string 38 for sowing.

At the outlet of the seed string shaping device, there is a tape drive section 39 shown in FIG. 4, and the seed string is caused to run in the P direction by passing between a drive roller 40 and a guide roller 41.

The running direction of the tape 31 is indicated by arrows in FIGS. 4 and 6.

The driving force for the tape 31 is provided by a tape drive section 39 consisting of a drive roller 40 and a guide roller 41.

(Modified example) In the case of round seeds with uniform particle size, it is relatively easy to accommodate a certain amount of seeds in the holes 23 of the ring-shaped belt 22, and even the square holes described above can achieve the purpose. be able to.

However, for seeds of special shapes, it is necessary to modify the structure of the belt 22 in various ways.

FIG. 5 shows a partially enlarged view of another embodiment of the ring-shaped belt.

The belt shown in FIG. 5 is suitable for seeds such as burdock, which are long and narrow and are relatively difficult to handle. This belt is provided with a chamfered portion 26 by rounding off the edges of the holes 23 in the belt traveling direction shown by the arrow.

This makes it easier for seeds to fall into the holes 23, and even when the belt is rotated at a faster speed, the holes 23
This makes it difficult for the number of seeds entering the tank to be inconsistent.

Further, since it is necessary to prepare and replace various belts, the belt is attached and detached using screws in the above embodiment, but various other coupling methods are conceivable for coupling the belt and the rotating disk.

Further, although the rotating disk is driven by a variable speed motor and a gear transmission section in this embodiment, the motor may be rotated by a combination of a belt and a pulley.

If the tape running speed is faster than the circumferential speed of the belt, the distance between the plants will be larger than the distance between the series of holes in the belt, but the speed of seed string production can also be made even faster.

(Effects of the Invention) The seed string manufacturing apparatus according to the present invention is capable of transferring the seeds accommodated in the holes of the ring-shaped belt to the tape running in the same direction as the ring-shaped belt when placing them on the sowing tape as described above. , when the tape separates from the belt, the seeds are pressed against the tape surface by the sum of their own weight and centrifugal force, and when the belt and tape are in contact, the seeds are transferred, ensuring accurate seed transfer. It becomes possible.

As a result, even if the production speed of the seed strings is considerably increased, the seed placement points will not shift or variations will occur between plants.

According to experiments conducted by the inventors, even when the circumferential speed of the belt and the running speed of the tape are almost the same, the speed of 2400 m/h
It was confirmed that stable seed string production was possible at a speed of .

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the configuration of the main parts of a conventional seeding manufacturing device. FIG. 2 is an exploded perspective view showing an example of a fixed drum for distributing seeds used in the apparatus of the present invention. FIG. 3 is a developed perspective view showing the relationship between the fixed part and the movable part of the seed distribution device used in the above device. FIG. 4 is a schematic diagram for explaining the sowing tape conveying device and the movement of the tape and seeds. FIG. 5 is a partially enlarged view for explaining another embodiment of the ring-shaped belt. FIG. 6 is a diagram showing an example of a seed string forming device that winds and forms tape. 1... Hole, 2... Endless belt, 3... Seed hopper, 4... Hopper bottom, 5... Seed, 6... Running tape, 11... Cylindrical part, 12... Guide frame, 13... Circular side plate, 14... Half-moon shaped side plate, 15 ... Carrying out groove, 16... Outer guide plate, 17... Hole of delivery part, 18... Pressing spring, 21... Rotating disc, 22... Cylindrical part, 23... Series of holes, 24... Screw, 25... Disc hub, 26 ... Chamfered portion of the edge of the hole, 27 ... Variable speed motor, 28 ... Gear transmission section, 29 ... Rotating shaft, 30 ... Seed, 31 ... Seeding tape, 32 ... Reel, 33 ... Guide roller, 34 ... V time shaping guide Frame, 35... Seed string forming guide frame, 36... Guide gutter holding plate, 37... Binding string, 38...
Seed string for sowing, 39... Tape drive unit, 40... Drive roller, 41... Guide roller, 42... Seed sensor mounting position, 43... Seed supply port, 44... Seed hopper.

Claims (1)

[Scope of Claims] 1. A fixed-side drum comprising a cylindrical portion and a side wall surface, in which a seed carrying groove is partially provided so as to pass through the cylindrical surface, and having a seed storage space inside, and the fixed-side drum. a support structure that supports the cylindrical part so that its central axis is horizontal and the seed ejection groove is located on one side of the lowermost part of the cylindrical part; a rotary drum having a rotatable cylindrical part and having a plurality of holes successively provided on the circumference of the cylindrical part corresponding to the seed ejection groove; a drive motor that is driven in a direction that rotates the seeds from the lowest position of the fixed drum in the direction of the carrying out groove; a seed hopper that supplies seeds into the space within the fixed drum; an outer guide plate disposed outside the cylindrical portion of the rotary drum at a position corresponding to the ejection groove to prevent seeds inserted into holes in the cylindrical portion from flying outward; and a cylindrical portion of the rotary drum. The tape is fed from the upper end of the outer guide plate to a position corresponding to the lowest position of the stationary drum so as to tightly cover the hole of the rotary drum, and from that position in a substantially horizontal direction. and a seed string forming device that binds and forms a seed string while pulling out the tape on which the seeds are placed, received from the hole in the cylindrical portion of the rotary drum at the lowest position of the fixed drum. A seed string manufacturing device consisting of. 2. The rotating drum is a cylindrical portion formed by fixing in a cylindrical shape a belt-like synthetic resin plate having a circular plate and a plurality of holes continuously provided around the circumference of the circular plate. Tane string manufacturing equipment. 3. The belt-shaped synthetic resin plate provided with a large number of consecutive holes is prepared in a large number with different shapes and numbers of holes, and is replaceable together with or for the disc. The seed string manufacturing device according to scope 2. 4. The seed string manufacturing apparatus according to claim 2, wherein the front edges of the many holes provided in the belt-shaped synthetic resin plate are inclined in the direction of travel inside the tube. 5. A seed hopper that supplies seeds into the space within the fixed drum is configured to ensure that a certain amount of seeds are always present in the space within the fixed drum based on a signal from a seed level detection means disposed in the space within the fixed drum. The seed string manufacturing device according to claim 1, which is configured to supply seeds. 6. The seed string manufacturing apparatus according to claim 1, wherein the drive motor is a motor whose rotational speed is variable.