JPH0678605A - Apparatus for correcting seedling - Google Patents

Abstract

PURPOSE:To provide a seedling-correction apparatus for correcting irregularity of seedlings caused by entanglement and bending of the leaf of seedling grown in a raising seedling box and surely transfer the seedlings to keep accurate transplanting posture of the seedling. CONSTITUTION:A plurality of sliding members 38, 43 holding asymmetrical fan-shaped plates 40, 40 or trapezoidal side plates 42, 42 in standing state are arranged at the right and left edges of a base plate 39 at regular intervals between the circulating right and left endless roller chains 49, 49 through supporting means. The plates 40, 40, etc., are positioned to correspond with a lateral row of seedling chamber 21 of a raising seedling box 20. Partition plate 56 extending in longitudinal direction is placed between the adjacent right and left sliding members 38, 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straightening device for various seedlings grown in a nursery box for raising seedlings, and in particular, when transplanting onion seedlings into a field, the seedlings are not entangled or bent in their leaf blades. The present invention relates to a seedling straightening device for correcting seedlings, reliably transferring seedlings, and maintaining an accurate planting posture.

[0002]

2. Description of the Related Art As a seedling straightening device, for example, the applicant of the present application has proposed a seedling straightening device according to Japanese Patent Publication No. 3-69241 and a seedling transfer device according to Japanese Utility Model Application Laid-Open No. 64-45908. In order to correct the seedlings grown in the nursery box for raising seedlings, these techniques are rod-shaped slidable rods that are raised at a predetermined height and at the same interval as the seedling chamber of the nursery box for raising seedlings. Are formed on the entire surface of the conveyor.

By the way, a seedling grown in a nursery box for raising seedlings has leaf blade parts entwined, bent, inclined, further grown laterally, etc. as shown in FIG. 7, depending on the growing environment. Random seedlings are mixed. Here, the shapes of the main uneven seedlings will be described with reference to the drawings. The entangled seedling a is a seedling in which the first leaf of the seedling has withered and entwined with a nearby seedling. The bent seedling b is a seedling whose leaf blade portion is bent due to the light-reflecting property, and particularly the seedling on the end side of the seedling box is easily bent. The slanted seedling c is a seedling whose leaf blade portion is slanted by an external impact during transportation. Also, if the seedlings grow too much, they tend to tilt, and if this state is left for a long time, the seedlings will become bent. The seedling d grown on the side refers to a seedling that grows from the side depending on the state of seed germination in the seedling chamber.

When straightening such uneven seedlings a to d, in the straightening device 1 of FIG. 8, upright sliding contact is made with the base plate 3 arranged on the roller chain 2 at equal intervals. Rod 4,
The entangled seedling a, the slanted seedling c, and the side-grown seedling d are sandwiched by 4 so as to be accommodated in the plurality of front and rear sliding rods 4, 4, ... The seedlings a, c, d are sent to a posture control device 6 composed of a pair of rotating rollers 5 and 5 made of an elastic body, and the unevenness is corrected. However, since only the bent seedling b has a predetermined gap L between the front and rear sliding rods 4, 4,
As shown in the figure, the bent blade portion is transferred to the posture control device 6 in a state of protruding toward the adjacent roller chain 2.

[0005]

The thus bent leaf blade portion is transferred to the attitude control device 6 in a state of being uncorrected and protruding to the sliding contact rods 4 and 4 on the adjacent roller chain 2. Then, the following problems arise. A part of the leaf is caught between the adjacent rollers 5 and 5, and the leaf is cut off. If the leaves are cut off, it will not be possible to plant seedlings with a seedling transplanter. Even if some leaves remain, the rubber disc of the seedling transplanter cannot accurately pinch the leaves, resulting in poor planting accuracy and adversely affecting seedling growth. When the seedlings themselves are wound around the adjacent rollers 5 and 5, there are two seedlings on the rollers 5 and 5, and one extra seedling. For this reason, the worker needs to remove the extra seedlings, which reduces the work efficiency. Usually, when the seedlings are wound around the rollers 5 and 5, a small amount of water is released from the seedlings, the surface of the rollers 5 and 5 is wetted, and the next seedling is easily wound. For this reason, when the seedlings start to wind around the rollers 5 and 5, the next seedling also easily winds up, the diameter of the rollers 5 and 5 increases, and it becomes impossible to control the posture of the seedlings. In this case, the work is stopped, and the wound seedlings are removed from the rollers 5 and 5, thus reducing the work efficiency. The present invention solves such a problem, and provides a seedling straightening device for correcting uneven seedlings, reliably transferring seedlings, and maintaining an accurate planting posture. .

[0006]

In order to achieve such an object, the present invention provides a method for rotating between left and right endless roller chains which are rotationally driven corresponding to each lateral row of seedling rooms of a nursery box for raising seedlings. In addition, a plurality of sliding contact bodies in which asymmetrical fan-shaped side plates are erected on both left and right end portions of the substrate are arranged in a continuous manner at predetermined intervals via support means.

Further, this sliding contact body may be an asymmetrical trapezoidal side plate, and an integral partition plate is interposed between the sliding contact bodies adjacent to each other on the left and right sides and the front and rear sides.

[0008]

[Function] The seedlings extruded from the lateral row of the nursery boxes for raising seedlings are fan-shaped side plates at the left and right ends of the sliding contact body which is continuously connected in the driving direction provided on the front surface of the corresponding nursery room, Alternatively, while being sandwiched by the trapezoidal side plates, they are transferred to the posture control device, and the leaf blade portion of the uneven seedling is corrected.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view in which a conventional seedling winding machine is equipped with an automatic seedling feeder including the seedling straightening device of the present invention. In FIG. 1, 10 is an automatic seedling feeder, which is a seedling pushing device 11, a seedling straightening device 12 which is the gist of the present invention,
It is composed of a posture control device 13 and a seedling aligning device 14, and a seedling winding machine 18 is connected to the seedling aligning device 14.

Next, these structures will be described one by one. In the case of the present invention, except for the seedling straightening device 12, since this is a known technique, the structure will be briefly described first. First, the configuration of the seedling pushing device 11 will be described. Reference numeral 16 denotes a mounting table having a U-shaped cross section, which is composed of side plates 17 and 17 at both left and right ends and a bottom plate 18, and has a horizontally elongated window hole (not shown) at the lower end of the bottom plate 18 and small holes at both lower ends. It is provided and is almost upright. Then, as shown in the figure, the seedlings 19 are directed to the front on the mounting table 16, the seedling-raising box 20 is mounted upright, and the seedling pushing device 11 provided below the backside of the mounting table 16 raises the seedlings. Seedling box 20 to seedling 19,1
9 ... are extruded forward.

That is, the pushing rods 22, 22, ... For pushing out the seedlings 19, 19, ... Of the respective seedling chambers 21 located in a horizontal row of the seedling raising box 20 are connected to the pushing body 23. There is. The pusher 23 reciprocates in the front-rear direction by a drive source, and the pusher rods 22, 22, ... The tip portion is formed so as to be able to penetrate the guide hole of the guide tool 25 at an interval that matches the hole at the bottom of the seedling chamber 21. In addition, this seedling box 20 for raising seedlings is moved downward in the vertical direction for each horizontal row after the extrusion of the horizontal rows of the seedlings 19, 19, ... Is completed, and the pushing rods 22, 2 are interlocked with this downward movement.
2 ... Repeats the operation of pushing out the next row of seedlings 19, 19 ,.

The posture control device 13 is composed of a pair of elastic rollers 26, 26 which rotate the seedlings 19 transferred from the seedling correction device 12 inwardly inwardly. The soil attached to the roots of 19 is crushed and separated from the seedling 19, and the seedling 1 is placed in the next seedling alignment device 14.
, 19, ... Are always supplied with a constant posture.

The seedling aligning device 14 comprises the posture control device 13
, And the frame plates 27, 28, ... Form a rectangular seedling holder 29 having upper and lower surfaces as openings. Inside this seedling holder 29, a chamber for accommodating the seedlings 19 one by one via a plurality of partition plates is provided.
Received supply of 19, ... Then, the seedlings 19, 19, ... Are lined up in the chamber one by one, and the bottom plate of this chamber is opened to allow the seedlings 19, 32 between the lugs 32, 32 on the conveyor belt 31 of the next seedling winding machine 15. 19 are sequentially supplied.

The seedling take-up machine 15 has a pair of lugs 32, 3 facing each other on a conveyor belt 31 which is endlessly rotationally driven and which is provided at both ends in the longitudinal direction thereof at regular intervals.
A plurality of 2, ... Are provided, and the conveyor belt 3 is pulled out from the roller 33 at the central portion of the conveyor belt 31.
A lower tape 34 that is driven integrally with the first tape 1 is provided. An upper tape 36, which is pulled out from the roller 35 and is driven integrally with the conveyor belt 31, is arranged at the tip of the conveyor belt 31 in the driving direction, and the lugs 32, 32, ... The seedling 19 supported and driven by the lower tape 34 is moved to the upper / lower tape 3
The tape seedling bundle 37 is formed by being sandwiched by 4, 36. The tape seedling bundle 37 having such a configuration is set in the seedling transplanter, and the seedlings 19 are transplanted to the field.

Next, a seedling straightening device 1 which is the subject matter of the present invention
2 will be described. FIG. 2 is a side view of the correction device, and FIG.
Is a cutaway front view of the same portion, and FIG. 4 is a perspective view of the sliding contact body. First, the sliding contact body 38 that constitutes the correction device 12 will be described. In this sliding contact body 38, asymmetrical fan-shaped side plates 40, 40 are provided upright at both ends of the substrate 39 in the longitudinal direction. That is, when the fan-shaped side plates 40, 40 form a circle having a radius R as the center point P of the sliding contact body 38 on the drive direction side of the center line 1 of the substrate 39 as shown in FIG. The height of the front end on the side is X and the height of the rear end on the opposite side is Y, and the asymmetrical shape is established such that the relationship X> Y holds. Further, the substrate 39 is provided with screw holes 41, 41. Instead of the fan-shaped side plates 40, 40, a sliding contact body 43 provided with asymmetrical trapezoidal side plates 42, 42 as shown in FIG. 6 can be configured.

Straightening device 1 comprising such a sliding contact body 38
2 is provided subsequent to the mounting table 16 of the seedling pushing device 11 as described above. That is, the left and right side plates 44, 44
Before and after, the drive shaft 45 and the driven shaft 46 are rotatably supported by the bearing units 47, 47, ..., and the sprocket 48, 48, ... is attached to the drive shaft 45 and the driven shaft 46, respectively. Sprockets 48,4
Roller chains 49, 49 are respectively provided between the eight. Then, the left and right roller chains 49, 49 have L-shaped stoppers 50, 50, ...
A plurality of mounting members are attached, and support plates 51, 51, ... for sliding contact bodies are laterally mounted on the stoppers 50, 50, ... via fixing means such as bolts 52, 53.

The above-mentioned sliding contact bodies 38, 38, ... On the support plates 51, 51 ,.
A plurality of them are arranged at the same interval at the pitch of the seedling box 21 in the horizontal direction, and are attached by screws 54, 54 through screw holes 41, 41, ...
8, the fan-shaped side plates 40, 40 overlap each other,
When the roller chains 49, 49 are on a straight line as shown in FIG. 2, they are arranged so that there is no gap between the sliding contact bodies 38, 38 in front of and behind them. Further, when the sliding contact body 38 is positioned on the front and rear drive shafts 45 and the driven shafts 46, a linear portion F is formed at the upper end portion on the drive direction side (X side of the front end) of the fan-shaped side plates 40, 40 as shown in FIG. The front and rear sliding contact bodies 38, 38 are formed so that there is no gap. Further, the side plate 4
Spacers 55 are provided at the lower end portions of 4, 44, and flat plate-shaped partition plates 56, 56, ... Interposed between the left and right slidable contact bodies 38, 38 are erected.

The seedling straightening device of the present invention having the above-mentioned configuration can be used as follows. The seedling box 20 for raising seedlings in which the seedlings 19 have been grown in the house is placed on the placing table 1 of the seedling pushing device 11.
Place on 6. Next, the seedling take-up machine 15 is started, necessary items such as the upper tape 35 and the lower tape 33 are set, and the automatic seedling feeder 10 and the seedling take-up machine 15 are operated. In this automatic seedling feeder 10, the seedling extruding device 11 is grown in each seedling chamber 21 by an extruding rod 22, 22, ... By which the lateral rows of seedlings 19, 19 of the seedling raising box 20 reciprocate back and forth. , And the seedlings 19 are extruded from the opening of the seedling room 21 together with the seedling growing soil, and the seedlings 1 are put into the next seedling correction device 12.
Supply 9,19.

In this orthodontic device 12, the supplied seedlings 19, 19, ... Are sandwiched between the fan-shaped side plates 40, 40 of the sliding contact bodies 38, 38 ,. As a result, the slidable contact bodies 38, 38, ... And the sandwiching time of the slidable contact bodies associated with the driving of the roller chains 49, 49 are combined, and the leaf blades of the seedlings that are uneven such as entanglement, bending, and inclination are corrected. Then, the seedlings 19, 19 are transferred to the subsequent attitude control device 13. Attitude control device 1 having this roller 26, 26, ...
3 separates the nursery soil attached to the roots of the seedlings 19, and the seedlings 19, 19, ... Are smoothly transferred to the next seedling alignment device 14. The seedlings 19, 19, ... Are aligned by the seedling aligning device 14 and fall onto the lower tape 34 of the following seedling winder 15. In this seedling winding machine 15, one worker carries out work for supplementing seedlings with missing strains and removing weak sounds to supplement healthy seedlings.
A tape seedling bundle 37 of 0% healthy seedlings can be made.

[0020]

The present invention having the above construction has the following effects. The sliding contact body of the present invention is configured in a connected state in which the fan-shaped side plates are overlapped with each other in the front-rear direction and there is no void. Therefore, irregular seedlings such as entanglement, bending, inclination, and lateral growth can be corrected, and the seedlings can be supplied to the next posture control device while keeping the correct posture of the seedling. Since the seedlings are supplied, the seedlings are not wrapped around the rollers, and the work efficiency is significantly improved. With the correct posture, it is possible to make a seedling bundle without leaf breakage, the planting accuracy is significantly improved, and the seedling growth is improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view in which a conventional seedling winding machine is equipped with an automatic seedling feeder including the seedling straightening device of the present invention.

FIG. 2 is a schematic side view of a seedling straightening device of the present invention.

FIG. 3 is a cutaway side view of the same portion.

FIG. 4 is a perspective view of a sliding contact body.

FIG. 5 is an explanatory diagram of a fan-shaped side plate of a sliding contact body.

FIG. 6 is a perspective view of another sliding contact body.

FIG. 7 is an explanatory view of a growing state of seedlings.

FIG. 8 is a plan view for explaining a conventional seedling straightening device.

[Explanation of symbols]

 20 Nursery box for raising seedlings 21 Seedling room 38,43 Sliding contact 39 Substrate 40,40 Fan side plate 42,42 Trapezoidal side plate 49,49 Roller chain 56 Partition plate

Claims (3)

[Claims] 1. An asymmetrical structure at each of left and right ends of a substrate via a support means at predetermined intervals between left and right endless roller chains that are rotationally driven so as to correspond to each lateral row of seedling rooms of a nursery box for raising seedlings. A seedling straightening device, characterized in that a plurality of sliding contact bodies having standing fan-shaped side plates are arranged in a continuous manner. 2. The seedling straightening device according to claim 1, wherein the sliding contact body is composed of an asymmetrical trapezoidal side plate. 3. The seedling according to claim 1, wherein partition plates integrally formed are interposed between the sliding contact bodies that are adjacent to each other on the left and right sides and between the sliding contact bodies that are adjacent to each other on the front and rear sides. Straightening device.