JPH0120801Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a seed string manufacturing device that arranges seeds at fixed positions on a sowing tape at high speed to produce seed strings.

(Prior Art) Apparatuses for producing seed strings are already known in which seeds of agricultural crops are wrapped in a water-soluble tape or the like in a substantially constant number at regular intervals.

FIG. 9 illustrates the main parts of such a device. According to this, an endless belt 42 provided with holes 41 at regular intervals is run over a lower part 44 of a hopper 43 in which seeds are stored.
The seed 20 inserted into the running tape 1 is dropped onto the running tape 1.

An example of the configuration of such a manufacturing device is
It is explained in detail in issue 24568. The tape into which the seeds are dropped is processed into a string after the seeds are rolled up. The seed spacing (seed spacing) of the seed strings produced 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 underneath.

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

However, if the belt speed is increased, there will be more variation in the position where the seeds fall onto the tape, and the tape speed must also be increased.
When the seeds fall, they are bounced off by the running tape, creating seedless plants.

As described above, there are limits to the conventional apparatus even if the manufacturing speed is sufficiently increased.

In order to solve the above problems, the present inventor first published Utility Application No. 59-35954 (Unexamined Japanese Patent Application No. 60-147206) for ``Seed String Manufacturing Apparatus'' and Japanese Patent Application No. 59-66416 (Unexamined Japanese Unexamined Patent Publication No. 60-60).
No. 210906) "Seed string manufacturing device" comprising: a fixed part having a space for storing seeds therein; a rotatable rotating part having a plurality of consecutive parts for receiving seeds from the fixed part and storing them in approximately constant numbers; A seed string manufacturing device that includes a motor that drives a rotating section, a tape that receives and places seeds from a seed storage section of the rotating section and travels, and a seed string manufacturing device that draws out and ties the tape on which the seeds are placed to form a seed string. proposed.

The seed string manufacturing device proposed by the present inventor does not drop seeds onto a running tape like in conventional devices, but instead transfers seeds from a rotating seed storage area to a tape that runs along the storage area, so it is quite effective. Even if the speed is increased, there is little deviation in the placement position of the seeds,
Also, there is no longer a situation where seedless plants are formed due to being blown away by the running tape.

However, if the speed is increased even further, the outer shape of the finished product will be irregular when tied with the seed string forming device, and the shape will tend to collapse due to rough handling such as when transporting the product, especially when the seed spacing is small. There is a strong tendency.

The inventor of the present invention has improved the tape feeding means in order to solve these drawbacks and further increase the manufacturing speed based on the above proposal.

(Purpose of the invention) An object of the present invention is to provide a seed string manufacturing device that can manufacture seed strings more reliably and at a faster speed.

(Structure of the invention) In order to achieve the above object, the seed string manufacturing device according to the present invention supplies seeds to a tape from a seed placement and supply device, and binds the tape wrapped with seeds while pulling it out using a seed string forming device. In a seed string manufacturing device that forms a string, seeds are received on a tape having a V-shaped cross section that is continuously pulled from the seed supply device, and one side is placed on a guide roller whose cylindrical portion is shaped like a drum with a swollen center. In the process of pressing the sides, changing the direction, and drawing out the bag, the seeds are arranged and shaped at the bottom of the bifold bag portion, and then pulled out through the seed string forming device.

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

The seed string manufacturing device according to the present invention basically includes a seed distribution device, a tape conveying device, and a seed string forming device.

FIG. 1 is a schematic diagram showing the arrangement of essential parts of an apparatus according to an embodiment of the present invention, as seen from the front.

Figure 2 shows a guide roller whose cylindrical portion is curved,
FIG. 2 is a schematic perspective view showing the relationship between a seed string forming device and a running tape.

As shown in FIG. 1, the sowing tape 1 is unwound from the tape reel 2, then changed direction by the guide rollers 3 and 4, and runs along the lowermost corner of the container of the seed arrangement and supply device 5, and then runs along the bottom corner of the container bottom plate. The tape passes between the container and the V-shaped guide 7, which is made to have a V-shaped cross section at the location indicated by the arrow B in the figure, so as to cover the notch. At this time, the seed distribution device 5
The seeds are transferred to Tape 1. Thereafter, the tape 1 changes its direction by approximately 90 degrees along the curved guide roller 8 whose cylindrical center is swollen and forms a drum shape, and as it advances toward the other side of the page in the figure, the tape cross section changes from a V-shape near arrow C. The bag is folded upward in half, and the seeds are sandwiched between the tape at regular intervals and fixed to the tape.

After the tape 1 passes the arrow C in the figure, it passes through the seed string forming device 10 shown enclosed by a two-dot chain line in FIG.
Binding drums 11 and 12 rotate in opposite directions.
When passing through the tape, it is bound by the binding threads 13 and 14, and is sandwiched between the tape drive roller 16 and guide roller 17 of the tape drive unit 15, and is
is sent in the direction of

The tape advances in the direction of arrow P and is wound up by a seed string winding device (not shown) to form a finished product.

Arrows A, B, and C at key points as the tape 1 changes from the uncreased state shown by arrow A in FIG. 1 to the tied seed string 18 shown by arrow D in FIG. , D are shown in FIG. 3.

A, B, C, and D in Figure 3 are the first
This corresponds to the locations indicated by arrows A, B, C, and D in the figures.

The most important thing in this invention is that the surface of the cylindrical portion of the guide roller 8 at the arrow C in FIGS. 1 and 2 is formed into a curved surface. If this is a flat cylindrical surface, the tape running speed is high, and the situation shown in Fig. 3E is likely to occur, especially when the spacing between seed plants is small. There is a risk that the seeds may protrude outside the tape, and even if they do not protrude, the external shape will be irregular and the shape will easily collapse.

In the case of this invention, the cylindrical part is a guide roller with a curved surface,
In particular, since a drum-shaped object is used in this embodiment, a force is generated that pulls the tape toward the bulging center of the drum while the tape is running, and the tape is always near the center of the cylindrical part while it is running, so that it is folded in two. Both ends 1a and 1b of the tape are now at approximately the same height. For this reason, the seeds are sent to the seed string forming device in a state where they are sandwiched and fixed between the tapes inside the bag-shaped bottom which is the center portion of the tape. Therefore, there are no irregularities in the completed seed string tied with the binding thread,
There is no need to worry about it losing its shape.

The seed distribution device 5 used in the embodiment of the present invention is a circular tray-shaped container that is fixed diagonally and has holes near the lowest part of the bottom for supplying seeds to the sowing tape, and a fixed number of seeds on the periphery. A plurality of notches are successively provided to accommodate a disk, which is rotated by a drive motor while maintaining a position parallel to the bottom surface within the container, and a flow for supplying seeds to the peripheral notch is regulated. A container with a guide frame attached to the container was used.

FIG. 4 is a right side view of the seed arrangement and supply device 5, and shows the speed control motor 2 which is the drive section.
6 and the speed reducer 27 are shown broken away. FIG. 5 shows a front view of the seed placement and feeding device. The seed placement and supply device includes a cylinder 21 on the outside of a container forming a circular tray shape and a bottom plate 22 of the container, and a guide frame 23 for regulating the flow of seeds inside the container. It is fixed to the cylinder 21 of the container by both ends of 24 and a support part 25.

There is a gap between the guide frame 23 and the bottom plate 22 of the container, and in this gap there is a disk 29 that is driven and rotated by the drive shaft 28 while remaining parallel to the bottom plate 22. The section is provided with a series of cutouts 30.

Guide frame 23, rotating disk 29, container outer cylinder 2
1. An exploded assembly diagram seen from the front is shown in FIG. 6 to show the relationship of the container bottom plate 22.

The container is formed by screwing the cylinder 21 and the bottom plate 22 together using an L fitting 31.

When this container is arranged diagonally, a notch 32 is provided at the lowest point of the bottom plate, and this 32 becomes an exit hole for the seeds and comes into contact with the running tape 1.

There is a gap between the lower part of the guide frame 23, which is fixed to the cylinder 21 of the container by the supporting part 25 and both ends of the flat plate part 24 of the guide frame, and the bottom plate 22 of the container, and the bottom plate 22 and the guide frame 23 are inserted into this gap. A freely rotatable disc 29 is connected to the drive shaft 28 shown in FIGS. 4 and 5 by means of a set screw 33.

The drive motor 26 is arranged so that its drive shaft 28 is inclined at 30 degrees with respect to the perpendicular, and the disk 29 is rotated at an angle of 30 degrees with respect to the horizontal plane.
A speed control motor is used as the drive motor 26 in FIG. 3 to rotate at 6 to 60 revolutions per second, and this is reduced to about 1/25th by a reduction gear 27 to control the rotational speed of the drive shaft 28 and therefore the disc 29 over a wide range. It is possible to change it to .

The output shaft of the drive motor 26 has an inclination of 30 degrees with respect to the perpendicular line, and the seeds 20 are thrown into a space surrounded by a guide frame 23 consisting of a cylindrical part and a flat plate part 24 and a rotating disk 29. As shown in Fig. 4, the bottom plate of the container is fixed at an angle of about 30 degrees, so that the water collects in the low part surrounded by the guide frame 23 on the rotating disk as shown in Figs. 4 and 5. , the guide frame 23 as the disc rotates through the window 34 of the guide frame shown in FIG.
and the container cylinder 21, and are further subjected to centrifugal force and collected at the periphery of the disk, and a certain amount of seeds are placed on the periphery of the disk 29, moving with the rotation of the disk. It is stored in each of the series of notches 30.

At this time, the seeds that cannot be stored in the notch 30 and overflow return to the inside of the guide frame 23 through the windows 35 and 36 of the guide frame.

This situation is shown in FIG. 7 as viewed from the direction of arrow L in FIG. 4.

In FIG. 7, the disk with a series of notches on its periphery is rotating clockwise, and the seeds 20 are guided from the inside of the guide frame through the window 34 in the guide frame as shown by arrow T. Move outside the frame.

Some of the seeds that are not stored in the notch 30 on the outside of the guide frame and overflow are removed from the window 35 of the guide frame by the arrow shown in FIG.
As shown in R ₁ , the objects that return to the inside of the guide frame and remain outside the guide frame move as the disk 29 rotates, and when they reach a position where they are blocked by the flat plate part 24 of the guide frame, they move along the flat plate part 24. They all return to the inner space of the guide frame through the window 36 of the guide frame as shown by arrow _R2 in FIG.

The rotational speed of the disc 29 is determined by considering the following points.

When the seed fits into the notch 30 of the disk 29 and is brought to the uppermost position, the component of the acceleration of gravity acting on the seed toward the center of the disk and the centrifugal force acting on the seed are balanced, causing the seed to fall. Centrifugal force acts to prevent
And the rotational speed is selected so that this centrifugal force facilitates the transfer of the seeds to the tape.

Furthermore, a series of notches 30 provided on the periphery of the disk 29 are made in a constant size and shape at regular intervals along the circumference, so that they apply centrifugal force as the disk 29 rotates. The separated seeds 20 roll on the disk and move toward the circumference, and a certain amount of the seeds 20 fit into the recesses of the series of notches and are stored therein.

The disk is rotating with an inclination of about 30°, but
When the seeds stored in the notch recess reach the lowest position, the bottom plate 22 of the container has a notch 32 at the lowest part, as shown in FIG. The liquid is ejected from the container to the outside through the hole in the notch 32 due to the resultant force of gravitational acceleration and centrifugal force.

It moves so as to be pressed against the surface of the seeding tape that runs along the lowest corner of the periphery of the bottom of the container at the same speed as the circumferential speed of the disc 29, and the individual intervals of the notches 30 provided on the periphery of the disc 29 Seed plants are placed at regular intervals determined by

On the other hand, as shown in FIG. 5, the sowing tape 1 is unwound from the tape reel 2, and then changed direction by the guide rollers 3 and 4, and is placed along the bottom corner of the container of the seed placement and supply device, and The tape passes between the container and a V-shaped guide 7, which is made to have a V-shaped cross section so as to cover the notch of 32, and is run in the direction of arrow _P1 , and sent to the seed string forming device.

As a seed string forming device, there is a tape winding device that is already known.
In this embodiment, as described above, the system shown in FIG. 2 is used, and its operation is the same as that described in connection with the same figure. The driving force for running the tape in the direction indicated by the arrow in FIGS. 5 and 2 is provided by the drive roller 16 shown in FIG.
The tape transport device 15 includes a guide roller 17 and a guide roller 17.

Furthermore, the notches 30 of the rotary disk 29 of the seed placement and supply device need to be of different sizes and shapes at different intervals for different types of vegetables or for different purposes of cultivation. , various types of discs 29 are prepared and can be replaced as necessary.

(Modifications) Various modifications can be made to the embodiments described in detail above within the scope of the present invention.

The seed placement and supply device 5 transfers seeds onto a tape from near the lowest part of a circular tray-shaped container fixed diagonally, but a device with other structure may be used as long as it can achieve the same purpose. . For example, seeds may be stored in a series of holes provided in a running or rotating endless belt and transferred to a running tape.

In this case, a means is provided in the seed arrangement and supply device so that the tape cross section becomes V-shaped or U-shaped, or a tape section from the seed arrangement and supply device to the guide roller 8 whose cylindrical portion is curved is provided. A tape guide having a V-shaped or U-shaped cross section may be passed between the tapes.

In addition, the guide roller 8 whose cylindrical portion is formed with a curved surface
As shown in Figure 3C and Figure 8 shown in the example, the drum-shaped cylinder with a bulging center part is determined by factors such as the shape, size, number, and distance between seeds of the seeds to be placed on the tape. As a result of experiments with various combinations, it was found that it was well suited to most combinations and was useful for speeding up the production speed of seed strings.

(Effects of the invention) As described above, the seed string manufacturing device according to the present invention uses guide rollers whose cylindrical portions are curved from placing seeds on the surface of the sowing tape to forming them in the seed string forming device. By changing the running direction of the tape and shaping the tape from a V-shaped or U-shaped cross section to a flat shape with seeds placed in a bifold bag, the production speed can be sufficiently increased and the tape can be tied with a seed string forming device. The seed strings are uniform in appearance and do not lose their shape even if handled roughly during transportation. Since strong seed strings can be produced in this way, the production speed can be greatly increased compared to conventional methods, which is a great effect.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the arrangement of main parts of an embodiment of the seed string manufacturing apparatus according to the present invention. FIG. 2 is a schematic perspective view showing the relationship among a guide roller whose cylindrical portion is a curved surface, a seed string forming device, and a running tape.
FIG. 3 is a sectional view showing the state of the running tape at various locations. FIG. 4 is a right side view (partially cut away) of the seed feeding device used in this example. Fifth
The figure is a front view of the apparatus of FIG. 4. FIG. 6 is an exploded view (front view) showing the mutual relationship of the main parts of the seed feeding device. Figure 7 is L in Figure 4.
FIG. 2 is a schematic view of the seed feeding device as seen from the direction indicated by the arrow. FIG. 8 is a sectional view of a guide roller whose cylindrical portion is formed with a curved surface. FIG. 9 is a schematic diagram showing the main parts of a conventional seed string manufacturing device. DESCRIPTION OF SYMBOLS 1... Seeding tape, 5... Seed placement and supply device, 7... V-shaped guide, 8... Guide roller whose cylindrical portion is formed with a curved surface, 10... Seed string forming device, 13, 14... Binding Thread, 15... Tape drive unit, 18... Seed string, 20... Seed, 19... Movable disc, 30... Notch portion for storing seeds, 32
...Notch in the bottom plate of the container.

Claims (1)

[Scope of utility model registration request] In a seed string manufacturing device that supplies seeds to a tape from a seed arrangement and supply device, and ties the tape wrapped around the seeds in a seed string forming device while pulling it out to form a seed string, a cross section of the tape that is continuously pulled from the seed feeding device. The tape receives the seeds in a V-shape, and in the process of pressing one side against the guide roller, which has a swollen drum shape in the center of the cylindrical part, changing the direction and pulling it out, the seeds are placed at the bottom of the bifold bag part. A seed string manufacturing device characterized in that it is configured to arrange and shape seeds and pull them out through the seed string forming device.