JPH02273108A - Tape-seedling transplantation machine - Google Patents

Abstract

PURPOSE:To suppress the loosening of thread at the upstream-side of the tape delivery direction relative to the separation position of a crop seedling bundle by placing a braking mechanism to apply a resistance to the motion of a thread guided from the 1st guiding member toward a thread-winding mechanism. CONSTITUTION:Crop seedling bundles (a) are arranged along the longitudinal direction of a tape 3 with regular intervals and sewn to the tape 3 with a continuous thread to form a tape-seedling, which is delivered toward a transplantation apparatus 13. At a position where the seedling bundle (a) is separated from the delivered tape-seedling, the 1st guiding member 9 to guide the thread 10 separated from the tape 3 toward a thread winding mechanism 7 and the 2nd guiding member 8 to guide the tape 8 toward a tape-winding mechanism 6 are placed opposite to each other in a state to clamp the tape seedling. A braking mechanism 28 is placed to apply a resistance to the motion of the thread guided from the guiding member 9 to the mechanism 7. The objective machine enables the suppression of the loosening of the thread at the upstream side in the delivery direction of the tape relative to the separation position of the crop seedling bundle and enables the smooth delivery of the separated crop seedling bundles.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used when planting bundles of crop seedlings, such as straw grass or rye, and plants are planted at predetermined intervals along the longitudinal direction of the tape. At the same time as arranging the seedling bundles, tape seedlings formed by sewing the crop seedling bundles onto the tape with a continuous thread are fed out toward a planting device, and the crop seedling bundles are separated from the tape seedlings that have been fed out. A first guide body that guides the thread that unravels from the tape toward the thread winding mechanism and a second guide body that guides the tape toward the tape winding mechanism are placed in a state where the tape seedlings are held in place. This invention relates to tape seedling transplanters arranged opposite to each other.

[Conventional technology]

Conventionally, in this type of tape seedling transplanter, a guide roll that applies tension to the thread has been provided in the thread winding path between the first guide member and the thread winding mechanism.

[Problem to be solved by the invention]

However, even if a configuration is adopted in which a guide roll is provided to provide an appropriate tension force, there may be subtle differences in the amount of thread that unravels from the tape due to differences in the bundled stems of crop seedling bundles. Out. For this purpose, a configuration is adopted in which the winding amount of the thread winding mechanism is made larger than the amount of tape being fed out, and the mismatch with the tape feeding amount is absorbed by providing a slip mechanism on the thread winding mechanism side and causing the thread to idle. However, if the winding amount changes in a short period of time, it is impossible to keep up with the fluctuations, and it is inevitable that the tension force of the thread being wound will fluctuate.

Therefore, when a winding force is applied in a state where the tape is loosened, the tension force becomes higher than normal, and the tension force sometimes causes the thread to unravel from the tape on the upper side of the separation area in the feeding direction.

In this case, assuming that the crop seedling bundle falls off from the tape or is sewn to the tape with two threads, only the roots of the crop seedling bundle will be attached to the tape, while the stem tips will be separated from the tape. In any case, the plants were not delivered to the planting department in the expected position, and
This caused a planting error.

An object of the present invention is to prevent "unraveling of the thread on the upper side in the tape feeding direction from the separation site of the crop seedling bundle" by adding a simple mechanism to the thread winding path between the first guide body and the thread winding mechanism. The point is to provide something that can suppress the phenomenon.

[Means to solve the problem]

A characteristic feature of the present invention is that a brake mechanism is provided that provides resistance to being guided from the first guide toward the yarn winding mechanism, and its effects are as follows.

[For production]

In other words, since the brake mechanism provides resistance to the yarn being wound from the second guide toward the yarn winding mechanism, a large tension force is applied when the yarn is wound up once it is loosened, as described above. Since this braking force can also suppress the tension, a large tension force is not applied to the yarn at the moment when it actually unravels from the tape, and the tension force applied to the yarn is kept constant.

〔Effect of the invention〕

Therefore, the thread will not unravel from the tape on the upper side of the crop seedling bundle separation site in the tape feeding direction, and the crop seedling bundle will not be separated from the tape. Therefore, it is possible to prevent seedlings that have fallen off from the tape from getting caught between the first guide member and the next seedling, causing a lock, and to ensure smooth reception of separated crop seedling bundles to the planting area. Transfers can now be made more reliably.

〔Example〕

The tape seedling transplanter (1) is a tape seedling making device (not shown).
The tape seedlings created in step 1 are stored in the seedling storage case (2) with the top and bottom aligned one after the other, and the tape seedlings are fed out from there, and the crop seedling bundle (a) is separated from the tape (3) and planted. It is something to attach.

The tape seedlings are a bunch of small crop seedlings (a) that have been manually divided from the mother plant against a single continuous tape (3), with the culm direction running along the width direction of the tape (3). Arranged at a predetermined interval in the longitudinal direction of the tape (3),
It is formed by sewing it onto the tape (3) using a sewing machine (not shown). There are two rows of threads (10) to fasten the crop seedling bundle (a) at three locations: the root and the stem tip.

As shown in Fig. 1, the tape seedlings stored in the seedling storage case (2) in a tapered manner are fed out downward via the guide roll (4) at the upper end of the seedling storage case (2), and are fed out through the separating device ( Droop down to 5). At this time, the crop seedling bundle (a) is delivered in a tilted posture along the lateral direction of the machine, and midway through, the crop seedling bundle (a) is turned into a tilted posture facing forward and backward.

The separation device (5) includes a roller (6) as a tape winding mechanism that winds the tape (3), a roller (7) as a thread winding mechanism that unwinds and winds the sewing thread (lO), and a crop seedling bundle. A second tape that guides the tape (3) from which the crop seedling bundle (a) has been released at the separation site (a) to the tape winding roller (6).
It consists of a drive guide roller (8) as a guide, and a roller (9) as a first guide that guides the thread (lO) to the thread take-up roller (7), and includes a tape take-up roller (6) and a thread winder. The intake hole (7) is equipped with a slip device (11), (
12) is equipped. The second drive guide roller (8
) and the second guide roller (9) are covered with sponge coverings (8A) and (9A), respectively. ) are arranged so that the guide rollers (8) and (9) are substantially in contact with each other.

Further, the feeding speed of the tape (3) is determined by the rotation speed of the second drive guide roller (8), and the rotation speed of the tape take-up roller (6) is determined by the rotation speed of the second drive guide roller (8) via the slip device (11). The thread winding roller (7) is set to rotate at a faster speed than the tape winding roller (8).On the other hand, the rotation speed of the thread winding roller (7) is set to match the rotation speed of the tape winding roller (6) in consideration of the winding length of the tape (3). It's faster than the speed.

A planting device (13) is arranged below this separation device (5), and these separation device (5) and planting device (
Feed case (14) that supplies driving force to
) is supported by an elevating link (15) at the rear end of the traveling machine (not shown), and the seedling storage case (2), separation device (5), and planting device (13) are connected to the feed case (14).
), soil leveling float (16), etc. are connected to form a tape seedling transplanter.

As shown in FIGS. 2 and 3, the planting device (13)
The transmission case (17) extends rearward from the rear surface of the feed case (14), and the transmission case (1
7) Arranged on both sides of the power take-off part at the rear end, it receives the seedlings released from the separation device (5), rotates while holding the stem tip of the crop seedling bundle (a), and releases it onto the field surface. Left and right elastic clamping rotating bodies (18A).

(18B) and these left and right elastic clamping rotating bodies (18A)
A first small-diameter roll-shaped push tool (1
9), a forked rod-shaped opening tool (20) that separates the clamping surfaces of the left and right elastic clamping rotors (18A) and (18B) in the vicinity of the discharge onto the field surface, and the forked rod-shaped opening tool (20). and a second small-diameter roll-shaped push tool (21) that maintains the separated state until the crop seedling bundle (a) receives and holds the bundle (a).

Here, the left and right elastic clamping rotating bodies (18A), (1
8B) is a thick rubber plate, which receives and holds the tip of the stem of the dropped crop seedling bundle (a) when the machine is tilted forward and backward, rotates downward, and rotates downward so that the crop seedling bundle <a) When the crop is in the vertical position, the pushing action of the first small-diameter roll-shaped pushing tool (19) is released, and the crop seedling bundle (a) is released and planted. The separated crop seedling bundle (a) is then held at the position where the elastic clamping rotating bodies (18A) and (18B) start holding the separated crop seedling bundle (a).
A receiver (24) is provided to temporarily catch the roots of the separated crop seedling bundle (a), and once the separated crop seedling bundle (a) is held in a tilted position facing forward and backward, the elastic clamping rotating body (18A), (18)
It is constructed so that the stem tip holding action in B) can be performed as expected.

In the figure, (22) indicates the left and right elastic clamping rotating bodies (18A).
), (18B) are a pair of left and right rod-shaped guides that guide the rotating crop seedling bundle (a) onto the field surface. A groove cutter (2) is placed below this rod-shaped guide (22).
3) is provided, and the structure is such that a groove is made with this groove-maker (23) and the crop seedling bundle (a) is planted in this groove. In addition, the rear end position of the bottom plate (23A) of this trencher (23) is provided near the swinging fulcrum (X) of the soil leveling float (16), so that the trencher (23) swings integrally with the soil leveling float (16). ) to reduce the height fluctuation caused by the bottom plate (23A),
A structure is adopted to prevent mud from flowing into the groove from the bottom plate (23A) side.

Next, the brake mechanism (28) provided for the thread (10) moving path from the first guide (9) to the thread winding mechanism (7) will be described. This brake mechanism (28
As shown in FIG. A clamping part (26) that clamps two threads (10) on both sides to provide resistance.
7) and (27) are provided.

This clamping part (27) is connected to the dish-shaped first clamping body (27A), (27A) fixedly installed on both end surfaces of the fixed cylinder (26), and the first clamping body (27A), (27A) A second plate-shaped holding body (27
B).

(27B). And these two sets of clamping bodies (
27A) and (27B), threads (10) and (1
0) to provide a movement resistance force.

Therefore, even under conditions where the tension force fluctuates due to differences in the bundle stems of the crop seedling bundle (a), a large tension force is not applied to the thread due to the braking force, and the tape seedlings are fed out from the crop seedling bundle separation site. Thread (lO
) will never come undone.

Also, there are two rows of continuous threads (10) for sewing the crop seedling bundle (a) onto the tape (3), each thread (10) and (10).
sews the stem tip and stem base together, but since the stem tip has a smaller bundle than the stem base, if the thread winding mechanism (7) were to wind it under the same conditions, the stem tip would be sewn. Side thread (10)
Since the thread (10) is pulled with a strong tension, the thread (10) is unraveled from the tape (3) on the upper side of the crop seedling bundle separation area in the tape seedling feeding direction. Therefore, said both threads (10).

The thread winding rolls (7), (7) for winding (lO) are attached to the rotating shaft via separate slip devices (12), (12), and the thread (lO) at the base of the stem is long, so it is fast. The thread (10) is wound at the number of revolutions. This means that the left and right holding portions (17A) in the brake mechanism (28).

The resistance force of (17B) is larger on the stem root side by the difference in speed, and the thread winding roll (7)
The slip force in (7) is also larger at the stem base commensurate with the above-mentioned resistance force. In any case, the brake mechanism (28) prevents an excessive tensile force from being applied to the thread (lO) separated from the tape (3).

[Another example]

■ If the thread winding mechanism (7) and tape winding mechanism (6) can be synchronized with the driving speed of the tape (3),
Slip devices (11), (12) are not necessary.

(2) The first guide body (9) may be a plate-shaped body having elastic force like a plate spring, as shown in FIG.

(2) The first and second guide bodies (9) and (8) may be of belt type and are not limited to rolls.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the tape seedling transplanter according to the present invention, in which FIG. 1 is a longitudinal sectional view showing the brake mechanism, FIG. 2 is an overall rear view, FIG. 3 is an overall side view, and FIG. FIG. 7 is a rear view showing another embodiment of the guide body. (a)... Crop seedling bundle, (3)... Tape, (6)... Tape winding mechanism, (7)...
... Thread winding mechanism, (8) ... Second guide body, (9) ... First guide body, (13) ...
- Planting device, (28)...Brake mechanism. Figure 1 Figure 4

Claims (1)

[Claims] The crop seedling bundles (a) are arranged at predetermined intervals along the longitudinal direction of the tape (3), and the crop seedling bundles (a) are
) is sewn onto the tape (3) to form a tape seedling, and the tape seedling is fed out toward the planting device (13), and at a part where the crop seedling bundle (a) is separated from the fed-out tape seedling, A first guide body (9) that guides the thread (10) that is unraveled from the tape (3) toward the thread winding mechanism (7) and guides the tape (3) toward the tape winding mechanism (6). A tape seedling transplanter is provided with a tape seedling transplanter in which a second guide body (8) is arranged to face the tape seedlings so as to sandwich the tape seedlings, and the tape seedlings are guided from the first guide body (9) toward the thread winding mechanism (7). This tape seedling transplanter is equipped with a brake mechanism (28) that provides resistance to water damage.