JPH11243730A - Longitudinally seedling conveying structure for seedling planting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject structure capable of supporting a section contacting with seedlings of a seedling conveying belt in such an appropriate way as to reduce any drag force. SOLUTION: This structure is obtained by providing projected lines 10a, designed to support a seedling contacting section of a seedling conveying belt 6 by contacting with the back surface S of the seedling conveying belt 6, along the longitudinally conveying direction, and by providing a guide section 6 adapted to receive a driving rack section 6b formed on the back surface S.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-type vertical seedling feeding structure mounted on a seedling rest of a seedling planting apparatus.

[0002]

2. Description of the Related Art The above-mentioned belt type seedling vertical feeding structure includes:
For example, as shown in Japanese Utility Model Laid-Open No. 3-92917,
A wide seedling feed belt is wound and stretched over the lower drive roller and the upper tension roller, and the drive roller is driven to rotate by a set angle every time the seedling nest reaches the end of the lateral feed stroke. It is general that the placed seedlings are fed vertically to a take-out opening at the lower end of the seedling rest.

[0003]

The belt-type seedling vertical feeding structure is widely used at present because the seedlings can be supported on a wide belt surface provided with a conveying projection and can be fed vertically without fail. When a seedling with a large seedling, especially a medium- and mature-potted seedling adapted for planting in a cold region, is placed, there is a problem that the middle of the seedling feed belt is bent and the transport function is reduced. As a means for solving such a problem, for example, it has been considered to provide a guide roller for receiving a seedling load on the back surface of the seedling feed belt. However, the cost is increased due to an increase in the number of parts and the number of assembling steps, and the weight is reduced. There were practical difficulties in terms of increase and the like. The present invention has been made in view of such circumstances, and is a belt-type belt that can smoothly and longitudinally feed a heavy seedling without causing problems such as an increase in cost and an increase in weight. It is intended to provide a seedling vertical feeding structure.

[0004]

In order to achieve the above object, a vertical seedling feeding structure according to the present invention is provided in a winding loop of a seedling feeding belt, between a driving roller having a seedling feeding belt wound thereon and a tension roller. A belt support member located and fixed in the belt support member, a plurality of guide ridges for receiving and supporting the back surface of the seedling feed belt in the seedling feed path,
A guide surface for receiving and supporting the distal end of the driving rack formed on the back of the seedling feed belt is provided.

[0005]

According to the above construction, the seedling feed belt in the seedling feed path is received and supported by the belt supporting member provided on the back surface thereof, so that even if heavy seedlings are placed, the seedling feed belt is greatly bent and the transport function is reduced. The contact between the belt support member and the seedling feed belt is caused by linear contact with the guide ridges along the longitudinal feed direction and intermittent contact with the tip of the drive rack on the back of the belt. Therefore, the overall frictional resistance is relatively small, and an increase in belt driving load is suppressed.

[0006]

As is clear from the above description, according to the present invention, even a heavy seedling such as a pot seedling can be smoothly and vertically fed, but only with a fixed belt support member. Since it is a remodeling, it can be carried out while suppressing an increase in cost and weight, and has a high practical effect. In addition, since the seedling feed belt can be equipped with less deflection, the seedling feed belt can be configured to be longer than in the past, and thereby a seedling vertical feed structure having a higher transport function can be configured.

[0007]

FIG. 5 shows a side view of a seedling planting apparatus connected to the rear part of the body of a riding type rice transplanter. This seedling planting device is connected to and supported by a machine body on the left side of the figure via a hydraulically driven link mechanism so as to be able to move up and down. A seedling stand 2 on which seedlings (potted seedlings) N are placed and which can reciprocate right and left with a constant stroke. A plurality of seedlings are cut out from the lower end of the seedling stand 2 one pot at a time, and a plurality of seedlings are rotary-planted. A mechanism 3, a seedling vertical feeding mechanism 4 for operating the seedling placing table 2 each time the horizontal feeding stroke end is reached, and vertically feeding the continuous seedlings N placed thereon, and a float 5 for leveling the rice field. It is configured. As shown in FIG. 2, the seedling vertical feeding mechanism 4 is configured by arranging a wide seedling feeding belt 6 for each row in the lower half of the seedling rest 2 with a pair of left and right. A seedling feed belt 6 is wound around a lower drive roller 7 and an upper tension roller 8. The seedling feed belt 6 is a wide rubber belt having a group of small projections 6a for conveyance on the outer peripheral surface thereof and a driving rack portion 6b engaging with the driving roller 7 at the left and right intermediate portion on the inner peripheral back surface. The tension roller 8 is slid upward by a spring 9 to tension the seedling feed belt 6 with a predetermined tension. The distance between the drive roller 7 and the tension roller 8,
In other words, the length of the seedling feed belt 6 is longer than the length of the seedling feed belt provided in the seedling planting apparatus for planting a general mat-shaped continuous seedling (seedling). To prevent sagging due to seedling weight,
Between the drive roller 7 and the tension roller 8, a belt supporting member 10 for receiving and supporting the seedling feeding belt 6 in the seedling feeding path from the back is provided, and is connected and fixed to the seedling rest 3. The belt support member 10 is formed by bending a metal plate material to have substantially the same width as the seedling feed belt 6, and a pair of guide ridges near the left and right ends thereof for receiving and supporting the rear surface of the seedling feed belt 6. A guide 10a protrudes along the seedling longitudinal feed direction, and a guide surface 10b for receiving and supporting the tip of the drive rack 6b is formed between the guide protrusions 10a. A connecting rod 11 penetrating the left and right side plates 10c is attached to two upper and lower portions of the belt supporting member 10, and the connecting rod 11 is supported by a lower bracket 12 and an upper metal fitting 13 provided on the back of the seedling rest 2. Thus, the belt support member 10 is connected and fixed to the back of the seedling rest 2. Also, by using a mold that has been brushed during molding of the seedling feed belt 6, the guide ridge 10
In the rear surface S of the seedling feed belt 6 with which a slides, a fine unevenness is formed, and even if the guide protrusion 10a is stopped for a long time while being in contact with the back surface S, the guide protrusion 10a is attached to the back surface S. Care has been taken to avoid sticking.

FIG. 4 shows a rotation drive mechanism of the drive roller 7 in the seedling vertical feed mechanism 4. In the drawing, reference numeral 14 denotes a drive cam which is rotatably supported by the left and right side surfaces of the planting mission case 1 and constantly rotates counterclockwise. Numeral 15 penetrates the planting mission case 2 and moves reciprocally right and left at a constant stroke. A mounting platform lateral feed shaft, 16 is a connecting arm for connecting both ends of the seedling platform horizontal feed shaft 15 and the seedling platform 2.
Reference numeral 17 denotes a vertical feed shaft rotatably and counterclockwise supported by the connecting arm 16, and 18 denotes a vertical feed arm fixed to the vertical feed shaft 17, and 19 denotes a vertical feed shaft fixed to the vertical feed shaft 17. A contact arm 20 that rotates integrally with the vertical feed arm 18 is a stopper pin that receives and supports the contact arm 19 and restricts the return position of the vertical feed arm 18 to contact. Reaches the stroke end, one of the vertical feed arms 18
4, the vertical feed arm 18 is rotated clockwise by a predetermined angle by contact with the drive cam 14, and this rotation is applied to the drive shaft 21 of the drive roller 7,
It is transmitted as a clockwise rotation through the chain transmission mechanism 22 and the one-way rotation clutch 23,
Are rotated by a predetermined amount, and the placed seedlings are fed vertically. When the vertical feed arm 18 is disengaged from the drive cam 14, the vertical feed arm 18 is rotated counterclockwise together with the contact arm 19 by the rotational bias given in advance, and the contact arm 19 is rotated by the stopper pin 20. It will be in the original standby posture after being received. When the seedling platform horizontal feed shaft 15 reaches the other stroke end, the other vertical feed arm 18 and the other drive cam 14 operate in the same manner as described above to perform the seedling vertical feed. In this configuration, the position of the seedling rest 2 can be adjusted in the seedling longitudinal feed direction together with the slide rail 24 that supports the lower end. For example, when the position of the seedling rest 2 is adjusted downward, the planting mechanism 3 The amount of seedlings collected is increased and the seedling rest 2 is moved downward, so that the stopper pins 2
The support arm 25 provided with 0 is rotationally displaced clockwise about the fulcrum shaft 26, and the pin contact position with respect to the contact arm 19 is displaced backward. This allows the vertical feed arm 1
8 is retracted counterclockwise and the drive cam 14
The angle of interference with the seedlings increases, and the amount of longitudinal feed of the seedlings is adjusted to increase. Conversely, when the position of the seedling rest 2 is adjusted upward, the amount of seedlings collected by the planting mechanism 3 decreases, and this seedling rest 2 is moved upward,
The support arm 25 is rotationally displaced counterclockwise about the fulcrum shaft 26, and the pin contact position with respect to the contact arm 19 is displaced forward. As a result, the return position of the vertical feed arm 18 advances clockwise, and the angle of interference with the drive cam 14 decreases. That is, the amount of vertical seedling feed is adjusted to decrease. In this case, when the seedling rest 2 is located at the center of the vertical adjustment range, that is, at the center of the seedling collection adjustment range, the contact position a between the contact arm 19 and the stopper pin 20 is set to the vertical feed shaft. The reference position of the support arm 25 is set so as to be on a line L connecting the axis of 17 and the axis of the fulcrum shaft 26 or extremely close thereto. With this setting, the vertical adjustment amount of the seedling placing table 2 (the amount of seedling picking) and the interference angle of the vertical feed arm 18 (the amount of vertical seedling feeding) can be made substantially the same.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling vertical feed mechanism.

FIG. 2 is a plan view of a seedling vertical feeding mechanism.

FIG. 3 is a longitudinal sectional front view of a main part of a seedling vertical feeding mechanism.

FIG. 4 is a side view showing a driving unit of the seedling vertical feeding mechanism.

FIG. 5 is a side view of a seedling planting apparatus.

[Explanation of symbols]

 2 Seedling stand 6 Seedling feed belt 7 Drive roller 8 Tension roller 10 Belt support member 10a Guide ridge 10b Guide surface

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[Procedure amendment]

[Submission date] February 18, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Vertical seedling feeding structure of seedling planting device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling vertical feeding structure of a seedling planting apparatus configured to vertically feed a seedling placed on a seedling rest to a lower side of the seedling rest.

[0002]

2. Description of the Related Art As a vertical seedling feeding structure of a seedling planting apparatus,
For example, as disclosed in Japanese Utility Model Laid-Open Publication No. 3-92917, a seedling feed belt having a predetermined width is arranged on a seedling nest in the vertical feed direction, and the seedling feed belt is rotationally driven in the vertical feed direction. In some cases, the seedling feed belt comes into contact with the bottom surface of the seedling placed on the seedling rest, and the seedling is fed vertically to the lower side of the seedling rest. Thereby, the planting mechanism takes out the seedlings from the lower part of the seedling mounting table and plant them on the rice field.

[0003]

The seedling feed belt is driven to rotate while being wound around a drive roller and a driven roller. A portion of the seedling feed belt that contacts the seedling is located between the drive roller and the driven roller. Since the weight of the seedlings tends to bend downward, it is necessary to support the portion of the seedling feed belt that contacts the seedlings. SUMMARY OF THE INVENTION It is an object of the present invention to provide a seedling vertical feeding structure of a seedling planting device that can appropriately support a portion of a seedling feeding belt that contacts a seedling.

[0004]

A feature of the present invention resides in the following structure in a vertical seedling feeding structure of a seedling planting apparatus. Equipped with a seedling rest on which seedlings are placed, and a planting mechanism for taking out seedlings from the lower part of the seedling rest and planting them on the rice field, placing a seedling feed belt having a predetermined width on the seedling rest along the vertical feeding direction. By rotating the seedling feed belt in the longitudinal feed direction, the seedling feed belt comes into contact with the bottom surface of the seedling, and the seedling is vertically fed to the lower side of the seedling nest. A drive rack formed on the back surface of the seedling feed belt, provided with a ridge in the longitudinal feed direction that supports a portion of the feed belt that contacts the seedling by contacting the back surface of the portion that contacts the seedling. A guide portion is provided for receiving the portion.

[0005]

According to the first aspect of the present invention, the portion of the seedling feed belt that contacts the seedling is supported from the rear side by the ridge, so that the portion of the seedling feed belt that comes into contact with the seedling is lowered by the weight of the seedling. Is prevented from being bent. This prevents a state in which the portion of the seedling feed belt that comes into contact with the seedlings bends downward together with the seedlings, thereby hindering the vertical feeding of the seedlings by the seedling feed belt.

According to the first aspect of the present invention, the ridge contacting the rear surface of the portion of the seedling feed belt which comes into contact with the seedling is relatively narrow and is disposed along the longitudinal feed direction. When is rotated in the longitudinal feed direction, the contact area of the ridge with the seedling feed belt is small, and the ridge is in the rotation direction (moving direction) of the seedling feed belt. Thus, the seedling feed belt can be smoothly rotated without receiving a large resistance from the ridge.

[II] The seedling feed belt is generally wound around a drive roller and a driven roller and placed on a seedling nest, and a drive rack portion formed on the back surface of the seedling feed belt is engaged with the drive roller. As the drive roller is driven to rotate, the seedling feed belt is driven to rotate. According to the first aspect of the present invention, since the guide portion for receiving the driving rack portion formed on the rear surface of the seedling feed belt is provided, the portion of the seedling feed belt that comes into contact with the seedling by the heavy seedling is reduced by the weight of the seedling. If the projecting ridges cannot sufficiently prevent downward bending, the drive rack portion of the seedling feed belt is received by the guide portion, and the seedling feed belt is also fed by the drive rack portion. The portion of the belt that contacts the seedling is supported.

In this case, the driving racks formed on the back of the seedling feed belt are formed on the back of the seedling feed belt so as to be arranged at predetermined intervals. The contact area with the guide does not become large. Thus, the seedling feeding belt is smoothly rotated and driven without the driving rack portion of the seedling feeding belt receiving great resistance from the guide portion.

[0009]

According to the first aspect of the present invention, in the seedling vertical feeding structure of the seedling planting apparatus, the portion of the seedling feeding belt that contacts the seedling is configured to be supported from the rear side by the ridge, so that the seedling is provided. The state in which the portion of the feed belt that contacts the seedling is prevented from bending downward due to the weight of the seedling is prevented, and the state that hinders the vertical feeding of the seedling by the seedling feed belt is prevented beforehand. Thus, the seedlings can be smoothly taken out from the lower part of the seedling rest and planted on the rice field by the planting mechanism, and the planting performance of the seedling planting apparatus can be improved.

According to the first aspect of the present invention, the ridge contacting the rear surface of the portion of the seedling feed belt that comes into contact with the seedling is relatively narrow and is arranged along the longitudinal feed direction, and a large resistance is provided from the ridge. Without receiving the seedlings, the seedling feed belt is smoothly rotated and the seedlings are vertically fed, so that the seedlings are taken out from the lower part of the seedling pedestal by the planting mechanism and planted on the rice field smoothly. Thus, the planting performance of the seedling planting apparatus could be improved.

According to the first aspect of the present invention, a guide portion for receiving a drive rack formed on the back surface of the seedling feed belt is provided. The state of trying to deflect downward due to the weight of the seedlings is prevented by the ridges and the drive rack portion of the seedling feed belt, and the state that hinders the vertical feeding of seedlings by the seedling feed belt is prevented beforehand. Thus, the planting performance of the seedling planting apparatus could be further improved. In this case, the drive racks formed on the back of the seedling feed belt are formed on the back of the seedling feed belt so as to be arranged at a predetermined interval, and the guides of the drive rack on the seedling feed belt are guided to the guides. Since the contact area does not become large, the seedling feed belt does not receive a large resistance from the guide portion, and the seedling feed belt is smoothly driven to rotate so that the seedlings can be vertically fed. The planting performance of the planting device could be further improved.

[0012]

FIG. 5 shows a side view of a seedling planting apparatus connected to a rear part of a body of a riding type rice transplanter. The seedling planting device is supported by a machine body on the left side outside the figure via a hydraulically driven link mechanism (not shown) so as to be able to move up and down. Seedling nest 2 on which seedlings N can be placed and traversed laterally by a constant stroke, seedlings N can be taken out from the lower part of seedling nests 2, and a plurality of rotary planting mechanisms 3 can be planted on the rice field. Each time the table 2 reaches the stroke end of the horizontal feed, it is provided with a seedling vertical feed mechanism 4 for vertically feeding the seedlings N downward, a float 5 for leveling the rice field, and the like.

As shown in FIG. 5 and FIG.
Is constructed by arranging a pair of left and right wide seedling feeding belts 6 on the lower half of the seedling rest 2 for each strip, and the seedling feeding belt 6 includes a lower driving roller 7 and an upper tension roller 8.
It is wound over. As shown in FIGS. 1, 2, and 3, the seedling feeding belt 6 has a small protrusion 6a for transporting the seedling N on the outer peripheral surface, and a driving roller 7 which is engaged with the driving roller 7 at the left and right intermediate portion on the inner peripheral rear surface. It is formed of a wide rubber belt having a rack 6b. The tension roller 8 is urged upward by a spring 9 to tension the seedling feed belt 6 with a predetermined tension.

The distance between the drive roller 7 and the tension roller 8, in other words, the length of the seedling feed belt 6, is longer than that of a seedling feed belt provided in a seedling planting apparatus for planting a common mat-shaped seedling. ing. Figures 1, 2, 3
In order to prevent the seedling feed belt 6 from bending due to the weight of the seedling N as shown in FIG. And the tension roller 8, and is connected and fixed to the seedling rest 3.

The belt supporting member 10 is formed by bending a metal plate and has substantially the same width as the seedling feeding belt 6. Protrusions that support the back surface S of the seedling feeding belt 6 are provided near both left and right ends of the belt supporting member 10. 10a is protruded along the longitudinal feed direction,
A guide surface 10b for receiving the tip of the drive rack 6b of the seedling feed belt 6 is formed between the ridges 10a.

Connecting rods 1 penetrating the left and right side plates 10c of the belt supporting member 10 at two positions above and below the belt supporting member 10.
1, a connecting rod 11 is supported by a lower bracket 12 and an upper bracket 13 of the seedling rest 2, and a belt supporting member 10 is connected and fixed to the back of the seedling rest 2. By using a mold that has been brushed at the time of molding the seedling feed belt 6, fine irregularities are formed on the back surface S of the seedling feed belt 6, and the protruding ridges 10a are kept in contact with the back surface S of the seedling feed belt 6 for a long time. Consideration is made so that the ridges 10a do not stick to the back surface S of the seedling feeding belt 6 even if it is stopped for a time.

FIG. 4 and FIG. 1 show the rotational drive structure of the drive roller 7 in the seedling vertical feed mechanism 4. As shown in FIGS. 4 and 1, the drive cam 1 supported on the left and right side surfaces of the planting transmission case 1 and rotating counterclockwise in FIG.
4. A transverse feed shaft 15 which is supported by the planting mission case 2 and which is laterally moved horizontally by a constant stroke, and a connecting arm 1 which connects both ends of the transverse feed shaft 15 and the seedling rest 2.
6. A vertical feed shaft 17 rotatably supported by the connecting arm 16 and urged in a counterclockwise direction on the paper surface, a vertical feed arm 18 fixed to the vertical feed shaft 17, a vertical feed arm fixed to the vertical feed shaft 17 A contact arm 19 that rotates integrally with the arm 18 and a stopper pin 20 that receives the contact arm 19 and regulates the standby position of the vertical feed arm 18 are provided.

As a result, when the traverse shaft 15 reaches the stroke end of one traverse feed, the one vertical feed arm 18 enters the rotation trajectory of the one drive cam 14 and contacts the drive cam 14 so that The vertical feed arm 18 is rotated clockwise by a predetermined angle on the paper, and the rotation of the vertical feed arm 18 is transmitted to the drive shaft 21 of the drive roller 7 via the chain transmission mechanism 22 and the one-way rotating clutch 23 in the clockwise direction on the paper. The rotation is transmitted as a rotation, and the seedling feeding belt 6 is driven to rotate by a predetermined amount, so that the seedlings N are vertically fed. Next, when the vertical feed arm 18 separates from the drive cam 14, the vertical feed arm 18 rotates together with the contact arm 19 in a counterclockwise direction on the paper by the biasing force given in advance, and the contact arm 19 is moved to the stopper pin 20. And the original standby position is reached. When the horizontal feed shaft 15 reaches the stroke end of the other horizontal feed, the other vertical feed arm 18 and the other drive cam 14 operate in the same manner as described above to perform the vertical feed of the seedling N.

As shown in FIG. 4, the seedling rest 2 can be adjusted in the vertical feeding direction together with a slide rail 24 supporting the lower part. For example, if the position of the seedling rest 2 is changed downward, the amount of seedlings collected by the planting mechanism 3 increases,
When the position of the seedling rest 2 is changed downward, the support arm 25 rotates clockwise about the fulcrum shaft 26, and the position of the stopper pin 20 is changed to the upper right in FIG. As a result, the standby position of the vertical feed arm 18 moves in the counterclockwise direction on the paper surface, and the angle while the drive cam 14 is in contact with the vertical feed arm 18 increases, and the vertical feed amount of the seedling N increases. Conversely, if the position of the seedling rest 2 is changed upward, the amount of seedlings collected by the planting mechanism 3 is reduced. As the position of the seedling rest 2 is changed upward, the support arm 25 is pivoted about the fulcrum shaft. The stopper pin 20 is rotated counterclockwise on the drawing sheet around 26, and the position of the stopper pin 20 is changed to the lower left of the drawing sheet of FIG. Thereby, the vertical feed arm 1
8 moves in the clockwise direction on the paper, and the drive cam 14 moves.
The angle of the seedlings N while it is in contact with the vertical feed arm 18 is reduced, and the vertical feed amount of the seedling N is reduced.

In this case, when the seedling placing table 2 is at the center position in the vertical feeding direction (the center position of the adjustment range of the amount of seedling picking), the contact position a between the contact arm 19 and the stopper pin 20 is set to the vertical feeding position. The reference position of the support arm 25 is set so as to be at or very near a line L connecting the axis of the shaft 17 and the axis of the fulcrum shaft 26. By setting in this way, the position of the seedling placing table 2 (the amount of seedling picking) and the angle (the amount of vertical feeding of the seedling N) while the drive cam 14 is in contact with the vertical feeding arm 18 can be set as follows.
They can be almost the same.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view showing the vicinity of a vertical seedling feeding mechanism in a seedling mounting table.

FIG. 2 is a plan view of the vicinity of a seedling vertical feeding mechanism in a seedling mounting table.

FIG. 3 is a vertical sectional front view of a seedling vertical feeding mechanism.

FIG. 4 is a side view showing the vicinity of a driving unit of a seedling vertical feeding mechanism.

FIG. 5 is an overall side view of the seedling planting apparatus.

[Explanation of Signs] 2 Seedling stand 3 Planting mechanism 6 Seedling feed belt 6b Driving rack 10a Ridge 10b Guide S

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiyuki Kojima 64 Ishizukitamachi, Sakai City, Osaka Inside Kubota Sakai Works

Claims (1)

[Claims] 1. A seedling rest (2) on which seedlings (N) are placed,
A planting mechanism (3) for taking out the seedlings (N) from the lower part of the seedling rest (2) and planting the seedlings (N) on the surface of a rice field; a seedling feeding belt (6) having a predetermined width is mounted on the seedling rest (2). By arranging the seedling feeding belt (6) in the vertical feeding direction along the vertical feeding direction,
The seedling feed belt (6) comes into contact with the bottom surface of the seedling (N),
The seedling (N) is configured to be fed vertically to the lower side of the seedling rest (2), and the seedling feed belt (6) is brought into contact with the rear surface (S) of the portion that comes into contact with the seedling (N). Seedlings (N) of the seedling feeding belt (6)
A ridge (10a) for supporting a portion in contact with the vertical direction, and a guide portion (6b) for receiving a driving rack portion (6b) formed on the back surface (S) of the seedling feed belt (6). 10b) The seedling vertical feeding structure of the seedling planting apparatus provided with 10b).