JPH05192019A - Structure for vertical feed of seedling in seedling planter - Google Patents

Abstract

PURPOSE:To obtain a belt type structure for vertical feed of seedlings capable of surely, smoothly and sufficiently performing the vertical feed of the seedlings without causing the deflection of a seedling feed belt even with the seedlings having a great weight. CONSTITUTION:A belt supporting member 10 located between a driving roller around which a seedling feed belt 6 is wound and a tension roller is arranged and fixed in a revolving loop of the seedling feed belt 6. This belt supporting member 10 is further equipped with plural guide protruding ridges (10a) for receiving the back surface of the seedling feed belt 6 in a seedling feed route and a guide surface (10b) for receiving and supporting the tip of a driving rack part (6b) formed on the back surface of the seedling feed belt 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-type seedling vertical feed structure equipped on a seedling stand of a seedling planting device.

[0002]

2. Description of the Related Art As the belt type vertical feeding structure for seedlings,
For example, as shown in Japanese Utility Model Publication No. 3-92917,
A wide seedling feeding belt is wound around the lower driving roller and the upper tension roller, and the driving roller is rotated by a set angle each time the seedling stand reaches the end of the lateral feeding stroke. It is general that the placed seedlings are vertically fed to the outlet at the lower end of the seedling stand.

[0003]

A belt-type vertical feeding structure for seedlings is widely used at present because it can reliably feed the seedling vertically with a wide belt surface provided with a transporting protrusion. When seedlings of large size, especially potted seedlings of medium / adult seedlings suitable for planting in cold regions were placed, there was a problem that the middle of the seedling feeding belt was bent and the transport function was deteriorated. As a means for solving such a problem, for example, it was considered to arrange a guide roller for receiving the seedling load on the back surface of the seedling feeding belt, but the cost increase due to the increase in the number of parts and the assembly man-hour, and the weight. There was a practical problem in terms of increase, etc. The present invention has been made in view of such circumstances, increases in cost and weight, without causing troubles such as a belt type belt capable of smoothly and longitudinally feeding a large seedling. It is intended to provide a seedling vertical feed structure.

[0004]

In order to achieve the above-mentioned object, the seedling longitudinal feeding structure of the present invention has a structure in which a seedling feeding belt is wound between a drive roller and a tension roller wound in a winding loop of the seedling feeding belt. Deploying and fixing a belt support member located at, this belt support member, a plurality of guide ridges for receiving and supporting the back surface of the seedling feeding belt in the seedling feeding path,
The structure is provided with a guide surface that receives and supports the tip of the drive rack formed on the back of the seedling feeding belt.

[0005]

With the above structure, the seedling feeding belt in the seedling feeding path is received and supported by the belt supporting member provided on the back surface thereof, so that even if a heavy seedling is placed, the seedling feeding belt is largely bent and the carrying function is deteriorated. In addition, the contact between this belt support member and the seedling feeding belt is linear contact with the guide ridges along the longitudinal feeding direction and the contact with the tip of the driving rack portion on the back surface of the belt. Because of this partial contact, the overall frictional resistance is relatively small, and the 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 a fixed belt support member is attached. Since it is a modification, it can be implemented while suppressing an increase in cost and an increase in weight, and is highly effective in practice. Further, since the seedling feeding belt can be equipped with less bending, the seedling feeding belt can be made longer than in the conventional case, whereby a seedling vertical feeding structure having a higher carrying function can be configured.

[0007]

EXAMPLE FIG. 5 shows a side view of a seedling planting device 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 on the left side of the figure via a hydraulically driven link mechanism so that it can be moved up and down. A seedling stand 2 that can be reciprocally moved left and right with a constant stroke by placing seedlings (pot seedlings) N, cutting out one pot at a time from the lower end of the seedling stand 2 and planting them on the rice field A mechanism 3, a seedling vertical feed mechanism 4 for vertically feeding the continuous seedling N placed and operated every time the seedling placing table 2 reaches the horizontal feed stroke end, and a float 5 for leveling the rice field Is configured. As shown in FIG. 2, the seedling vertical feed mechanism 4 is configured such that a pair of wide seedling feed belts 6 is arranged in each row on the lower half of the seedling stand 2 for each row. The seedling feeding belt 6 is wound around the lower drive roller 7 and the upper tension roller 8 and stretched. The seedling feeding belt 6 is a wide rubber belt having a group of small protrusions 6a for transportation on the outer peripheral surface thereof and a driving rack portion 6b engaging with the driving roller 7 at the left and right intermediate portions of the inner peripheral rear surface. The tension roller 8 is slid upward by the spring 9 so that the seedling feeding belt 6 is tensioned with a predetermined tension. A distance between the driving roller 7 and the tension roller 8,
In other words, the length of the seedling feeding belt 6 is longer than that of the seedling feeding belt equipped in the general seedling planting apparatus for planting mat-shaped continuous seedlings (saplings). To prevent the seedling weight from bending,
Between the drive roller 7 and the tension roller 8, a belt support member 10 for receiving and supporting the seedling feeding belt 6 on the seedling feeding path from the back side is provided and connected and fixed to the seedling placing table 3. The belt supporting member 10 is formed by bending a metal plate material to have substantially the same width as the seedling feeding belt 6, and a pair of guide ridges for receiving and supporting the back surface of the seedling feeding belt 6 near the left and right ends thereof. A guide surface 10b is formed between the guide protrusions 10a so as to receive and support the tip end portion of the drive rack portion 6b. A connecting rod 11 penetrating the left and right side plates 10c is attached to the 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 stand 2. The belt support member 10 is connected and fixed to the back of the seedling stand 2. In addition, by using a mold that has been brushed at the time of molding the seedling feeding belt 6, the guide protrusion 10
Since the rear surface S of the seedling feeding belt 6 with which a slides is in contact with the back surface S, minute unevenness is formed. It is considered that it will not stick to.

FIG. 4 shows a rotation driving mechanism of the driving roller 7 in the vertical seedling feeding mechanism 4. In the figure, 14 is a drive cam which is axially supported on the left and right side surfaces of the planting mission case 1 and always rotates counterclockwise, and 15 is a seedling which is horizontally extended through the planting mission case 2 and reciprocates left and right with a constant stroke. A horizontal table feed shaft, 16 is a connecting arm for connecting both ends of the horizontal table feed shaft 15 to the seedling table 2.
Reference numeral 17 denotes a vertical feed shaft that is rotatably supported by the connecting arm 16 and is urged to rotate counterclockwise, 18 is a vertical feed arm fixed to the vertical feed shaft 17, and 19 is fixed to the vertical feed shaft 17. The vertical feed arm 18 rotates integrally with the vertical feed arm 18, and 20 is a stopper pin that receives and supports the vertical feed arm 19 to regulate the return position of the vertical feed arm 18. Reaches the stroke end, one of the vertical feed arms 18 moves to the other drive cam 1
4, the vertical feed arm 18 is kicked and rotated clockwise by a predetermined angle by contact with the drive cam 14, and this rotation is caused by the drive shaft 21 of the drive roller 7.
It is transmitted as clockwise rotation through the chain transmission mechanism 22 and the one-way rotation clutch 23, and the seedling feeding belt 6
Is rotationally driven by a predetermined amount to vertically feed the placed seedlings. When the vertical feed arm 18 is disengaged from the drive cam 14, the vertical feed arm 18 is rotated counterclockwise together with the abutment arm 19 by a predetermined rotational biasing force, and the abutment arm 19 is stopped by the stopper pin 20. Even if it is accepted, it will be in the original standby position. Further, when the seedling table 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, and the seedling vertical feed is performed. In this configuration, the seedling placing table 2 can be adjusted in position in the longitudinal direction of the seedling together with the slide rail 24 supporting the lower end of the seedling placing table 2. For example, when the seedling placing table 2 is adjusted downward, The seedling removal amount is increased and the seedling stand 2 is moved downward, so that the stopper pin 2
The support arm 25 having 0 is rotationally displaced clockwise about the fulcrum shaft 26, and the pin contact position with respect to the contact arm 19 is moved backward. This allows the vertical feed arm 1
8 returns to the counterclockwise direction and the drive cam 14
The angle of interference with the seedlings increases, and thus the vertical feed amount of seedlings is increased. On the contrary, when the seedling stand 2 is positionally adjusted upward, the amount of seedlings taken by the planting mechanism 3 is decreased and the seedling stand 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 vertical feed amount of seedlings is adjusted to be reduced. In this case, when the seedling stand 2 is at the center position of the vertical adjustment range, that is, the center of the seedling removal amount adjustment range, the contact position a between the contact arm 19 and the stopper pin 20 is the vertical feed shaft. The reference position of the support arm 25 is set so as to be on or near a line L connecting the axis of 17 and the axis of the fulcrum shaft 26. By setting in this way, it is possible to make the vertical adjustment amount (seedling taking amount) of the seedling placing table 2 and the interference angle (seedling vertical feeding amount) of the vertical feeding arm 18 substantially the same.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of the vertical seedling feeding mechanism

[Figure 2] Plan view of the vertical seedling feeding mechanism

[Figure 3] Front view of the vertical section of the main part of the vertical seedling feeding mechanism

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

[Figure 5] Side view of seedling planting device

[Explanation of symbols]

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

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Kojima 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (1)

[Claims] 1. A seedling vertical feeding structure of a seedling planting device configured to feed a seedling (N) placed on a seedling stand (2) vertically with a wide seedling feeding belt (6), said seedling feeding In the winding loop of the belt (6), the belt support member (10) located between the driving roller (7) wound with the seedling feeding belt (6) and the tension roller (8) is arranged and fixed. The belt support member (10) has a plurality of guide ridges (10a) for receiving and supporting the back surface of the seedling feeding belt (6) in the seedling feeding path, and a driving member formed on the back surface of the seedling feeding belt (6). A seedling vertical feeding structure for a seedling planting device, which is provided with a guide surface (10b) for receiving and supporting the tip portion of the rack portion (6b).