JPH0733610Y2 - Paper tube seedling selection and transport device for transplanter - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The invention is to continuously convey paper tube seedlings received in a continuous state to a feeding conveyer to individual pieces and then feed them to a seedling planting device at a required planting interval to continuously feed them to a field. In the transplanting machine of the type to be planted in, between the feeding conveyor and the seedling planting device for the paper seedlings, good seedlings in which the leaves grow to a normal size and leaves due to poor germination or development etc. Paper tube seedling sorting / conveying that sorts out defective seedlings that do not grow to normal size even if there is little or not, discharges the defective seedlings out of the system, and conveys only the good seedlings to the seedling planting device Regarding the improvement of the device.

[0002]

2. Description of the Related Art Conventionally, as a paper tube seedling selection / conveying device of this kind, a seedling selection belt for supporting a paper tube portion of a paper tube seedling in a lying state while maintaining a required interval, and a normal operation of the paper tube seedling. Upper and lower sandwiching belts for sandwiching leaf portions of size, feeding conveyors for feeding paper tube seedlings to these belts, paper tube seedlings are fed from these belts and aligned and transferred to the seedling planting device The one composed of parallel transfer belts, etc.
It is described in Japanese Patent Publication No. 29843 and already known.

[0003]

According to this, since the defective seedlings are not pinched by the upper and lower clamping belts, the seedlings are unbalanced and fallen out of the system. In addition, the good seedlings are transferred to the parallel transfer belt with the leaf portions thereof being sandwiched by the upper and lower sandwiching belts and the paper tube portion being supported by the seedling selection belt.

However, even a good seedling is misaligned even if it is sandwiched by the upper and lower sandwiching belts because the sandwiching position of the leaves by the upper and lower sandwiching belts is not appropriate or the leaves are thin seedlings. In some cases, the paper tube portion supported by the seedling selection belt hangs the lower end side or the upper leaf side of the supporting portion below the seedling selection belt (FIGS. 3 and 6). reference).

On the other hand, in the parallel transfer belt, the conveying surface thereof, that is, the paper tube portion mounting surface of the paper tube seedlings is set at the same height as that of the seedling selection belt. For this reason, the paper tube seedling in which the lower end side or the leaf side of the paper tube portion is hung as described above, the paper tube seedling portion is transferred from the seedling selection belt to the aligning transfer belt when it is transferred to the aligning transfer belt. Since the paper tube portion is made to collide with the receiving end and the transportation of the paper tube portion is delayed compared to the leaf portion side, there is a disadvantage that the paper tube seedling becomes slanted when it is mounted on the parallel transfer belt. It hinders proper transportation or planting.

The object of the present invention is to eliminate such drawbacks,
Accurate transport and planting after selection.

[0007]

SUMMARY OF THE INVENTION A paper tube seedling selecting and conveying device of the present invention comprises a seedling selection belt 7 for supporting a paper tube portion P ₁ of a paper tube seedling P in a sideways state and a normal operation of the paper tube seedling P. Upper and lower holding belts 12 and 13 for holding a leaf portion P ₂ of a size, and a parallel transfer belt 22 for feeding a paper tube seedling P from these belts and transferring it in parallel to the seedling planting device B. When arranging the seedlings in parallel, the aligning transfer belt 22 was stretched by gradually inclining so that the receiving end was lower than the seedling selecting belt 7 and the sending end was at the same height as the seedling selecting belt 7. Characterize.

[0008]

[Function] The paper tube part of the seedlings supported by the seedling selection belt is located at the lower end side of the support part due to the improper pinching position of the leaf part by the upper and lower pinching belts or the thin leaves. Alternatively, even if the leaf side may hang down below the seedling selection belt, since the receiving end side of the aligning transfer belt is low, the aligning transfer belt does not contact the receiving end of the aligning transfer belt. When the paper seedlings reach the delivery end side, they are leveled with the upper surface of the seedling selection belt, that is, horizontal.

[0009]

1 to 3 show a first embodiment of the present invention. A
Is a feeding conveyer, B is a seedling planting device, and C is a paper tube seedling selecting and conveying device of the present invention installed between the feeding conveyer A and the seedling planting device B.

The paper tube seedlings P are placed and conveyed on the feeding conveyor A while the required number of paper tube portions P ₁ are continuously bound, and the paper tube portion P ₁ is connected to the delivery end of the conveyor A and the holding ring 1. When it is sent out from between, it is separated into individual pieces by the separating conveyor 2 which rotates faster than the feeding conveyor A and the presser wheel 1, and the speed at which it is rotated faster than the feeding roller 3 via the feeding roller 3 therebelow. It is fed to the feed roller 4.

The seedling planting device B comprises a pair of elastic rotating discs such as rubber discs which are superposed on each other by superposition, and which have a pair of long and short sandwiching vertical belts 5 superposed with elastic members 5'and 6 '. Paper tube seedling P conveyed by a supply conveyor D consisting of 6 at planting intervals
It has a well-known structure in which (good seedlings) are received at the upper peripheral portion, sandwiched and conveyed, and released at the lower peripheral portion to perform predetermined planting.

[0012] In the paper tube seedling sorting conveying device C, 7 is a seedling screening belt for conveying the sheet portion P ₂ side of the paper tube portion P ₁ of the paper tube seedlings P nono supporting and. The seedling selection belt 7 is horizontally wound around the pulley 9 attached to the shaft 8 of the feed roller 4 and the pulley 11 attached to the shaft 10 extending horizontally on the supply conveyor D side. There is.

Reference numerals 12 and 13 denote upper and lower holding belts for holding the leaf portion P ₂ of the paper tube seedling P. The lower holding belt 13 is wound and mounted between a pulley 15 attached to the shaft 14 of the feed roller 3 and a pulley 16 attached to the shaft 10, and runs parallel to the seedling selection belt 7. Lower clamping belt 1
3, the receiving end side, that is, the pulley 15 side, is higher than the upper surface of the seedling selection belt 7, and the sending end side, that is, the pulley 16 side, is inclined so that the upper surface thereof is at the same height as the upper surface of the seedling selection belt 7. .

The upper holding belt 12 includes upper pulleys 17 and 1.
7'and the lower pulleys 18 and 18 'are wound and mounted, and the elastic material 12' is superposed on the outer side to form the lower pulleys 18 and 1 '.
The elastic material 12 'is joined to the upper side surface of the lower holding belt 13 in the portion running between 8'.

19 is between shafts 8 and 10 and shaft 1
A pulley 20 is attached to the shaft 20 which is laid horizontally near 0, a pulley 21 is attached to the shaft 10, and a parallel transfer belt 22 is wound around the pulleys 19 and 21.

The parallel transfer belt 22 is provided on the side of the seedling selection belt 7 opposite to the side on which the upper and lower holding belts 12, 13 are provided so as to run parallel to the seedling selection belt 7.
In addition, the upper side surface of the aligning transfer belt 22 is lower on the receiving end side, that is, the pulley 19 side than the upper side surface of the seedling selecting belt 7, and on the sending end side, that is, the pulley 21 side, is the same height as the upper side surface of the seedling selecting belt 7. So that it is gradually inclined.

As described above, the paper tube seedling P separated into individual pieces and fed to the feed roller 4 at a speed or through the feed roller 3
Are separated by their speed and the feed roller 4, and
The leaf portion P ₂ side of the paper tube portion P ₁ is supported by the seedling selection belt 7 and the leaf portion P _{2 is held} by the upper and lower holding belts 12 and 13 for conveyance. Is there any leaf portion P ₂ ? less defective seedling P is not a normal size even ', the leaves P ₂ is slipped because it is not held is discharged out of the system, is conveyed Yonae to have front to i.e. assortment columns are sorted transferred belt 22 It

In this case, even for the paper tube seedlings P which are good seedlings, the seedlings are selected because the position where the leaf portion P ₂ is held by the upper and lower holding belts 12 and 13 is inappropriate or the leaves are thin. The paper tube portion P ₁ supported by the belt 7 may hang downward at the lower end side from its supporting portion.
Even in such a case, since the receiving end side of the aligning transfer belt 22 is low as described above, the paper tube portion P ₁ is smoothly transposed and conveyed without colliding with the receiving end,
Moreover, when all the paper tube seedlings P reach the delivery end side, they are at the same height as the upper surface of the seedling selection belt 7, that is, horizontal.

Reference numeral 23 denotes a close aligning roller attached to a shaft 24 which is horizontally adjacent to and in front of the sending end side of the seedling selecting belt 7, the upper and lower sandwiching belts 12 and 13, and the aligning transfer belt 22. The paper tube seedlings P conveyed by the above belts at a required interval are closely aligned on the closely aligned roller 23 and are sent out from between the presser ring 25 axially supported above the closely aligned roller 23, where they are closely contacted. By the upper part of the long holding vertical belt 5 which runs at a speed higher than that of the aligning rollers 23, it is again separated by a required distance, that is, a planting distance. Then, the supply conveyor D composed of the long sandwiching vertical belt 5 and the short sandwiching vertical belt 6 sandwiches the paper tube seedling P and conveys it to the seedling planting device B while maintaining the planting interval. .

Reference numeral 26 is a non-contact detector for detecting the density of the paper tube seedlings P transferred onto the parallel transfer belt 22, and the transfer amount is based on the detection state of the non-contact detector 26. When it is judged that there are too many, the close alignment roller 2
3, the transport speed on the upstream side is reduced to reduce the transport supply amount, and when the number of paper tube seedlings P transferred on the parallel transfer belt 22 reaches the required set number, the upstream transport speed is returned to the original state. It is configured to return to increase the transport supply amount.

As a result, the paper tube seedlings P transferred to the closely aligned roller 23 are always closely aligned, and based on that, the feeding interval D can be accurately held and conveyed at the planting interval. Is.

4 to 6 show a second embodiment of the present invention.
The second embodiment is different from the above-mentioned first embodiment in the tensioning positions of the seedling selection belt 7 and the alignment transfer belt 22, and the other configurations are common to both embodiments, and therefore the following will be avoided to avoid duplication. Only the differences will be described, and common parts will be denoted by the same reference numerals and description thereof will be omitted.

That is, in the first embodiment, the seedling selection belt 7 is stretched between the aligning transfer belt 22 and the upper and lower clamping belts 12 and 13, and the paper tube of the seedlings P is attached to the seedling selection belt 7. In contrast to the configuration in which the leaf P ₂ side of the portion P ₁ is supported,
In the second embodiment, the seedling selection belt 7 and the upper and lower holding belts 12,
The parallel transfer belt 22 is placed in a stretched position between it and the seedling selection belt 7, and the lower end side of the paper tube portion P ₁ of the paper tube seedling P is supported by the seedling selection belt 7.

The paper tube seedlings P supplied at intervals by the speed and the feed rollers 4 support the lower end side of the paper tube portion P ₁ on the seedling selection belt 7 (FIG. 6) and the leaf portion P ₂ Is conveyed by being clamped by the upper and lower clamping belts 12 and 13, and when it is a defective seedling P ′, the leaf portion P ₂ is not clamped and it falls off and is discharged out of the system. Only good seedlings are sorted and forward. That is, it is conveyed to the alignment transfer belt 22.

Even for the paper tube seedling P which is a good seedling, the paper supported by the seedling selection belt 7 is used when the nipping position of the leaf portion P ₂ by the upper and lower nipping belts 12 and 13 is inappropriate. The tubular portion P ₁ may hang downward on the leaf portion P ₂ side from its supporting portion, but even in such a case,
Since the receiving end side of the parallel transfer belt 22 is lower than the seedling selecting belt 7, the paper tube portion P ₁ is smoothly transposed and conveyed without contacting the receiving end, and any paper tube seedling P is sent out. When it reaches, it becomes the same height as the upper surface of the seedling selection belt 7, that is, it becomes horizontal.

Generally, for paper tube seedlings having a short length of 5 cm or less, such as onion seedlings, the one having the structure of the first embodiment is preferable, and the paper tube portion length such as beet seedlings is preferable. Is 10
In the case of a paper tube seedling having a length of at least cm, the configuration of the second embodiment is preferable.

[0027]

[Effect of the Invention] As is clear from the above description,
The paper tube seedling selection / conveyance device of the transplanter according to the present invention has the following effects.

[0028] The paper tube portion of the seedlings supported by the seedling selection belt is located at the lower end side of the support portion due to the improper pinching position of the leaf portion by the upper and lower holding belts or the thin leaves. Alternatively, even if the leaf side may hang down below the seedling selection belt, since the receiving end side of the parallel transfer belt is low, the paper tube part is smoothly transposed and conveyed without colliding with the receiving end. Moreover, when all the paper tube seedlings reach the delivery end side of the parallel transfer belt, they are level with the upper surface of the seedling selection belt, that is, horizontal.

That is, the paper tube seedling does not delay the transportation of the paper tube part from the leaf side, and therefore, when the paper tube seedling is mounted on the parallel transfer belt as in the conventional case, it becomes oblique. This eliminates the risk of accidents and makes it possible to accurately carry out subsequent transportation or planting.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment of the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a side view of a main part of the above.

FIG. 4 is a side view of a second embodiment of the present invention.

FIG. 5 is a plan view of the above.

FIG. 6 is a side view of the main part of the above.

[Explanation of symbols]

A feed conveyor B planting device C paper tube seedling sorting conveyor device D the supply conveyor P paper tube seedling P ₁ paper tube portion P ₂ leaf portion 7 seedling sorting belt 12 upper holding belt 13 lower holding belt 22 assortment column transfer belt

Claims (3)

[Scope of utility model registration request] 1. A seedling selection belt for supporting a paper tube portion of a paper tube seedling in a lying-down state, an upper and lower holding belt for holding a leaf portion of a normal size of the paper tube seedling, and a paper tube seedling from these belts. In the paper tube seedling selection / conveying device of the transplanter, which is arranged in parallel with the aligning transfer belt for feeding and transferring the aligning transfer belt toward the seedling planting device, Is lower than the seedling selection belt, and is gradually stretched and stretched so that the delivery end is at the same height as the seedling selection belt. 2. A seedling selection belt is arranged between the parallel transfer belt and the upper and lower clamping belts.
Paper tube seedling sorting and conveying device of the transplanter described. 3. A parallel transfer belt is arranged between the seedling selection belt and the upper and lower clamping belts.
Paper tube seedling sorting and conveying device of the transplanter described.