JP3580480B2 - Transplanter seedling box feeder - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, seedlings grown in a flexible pot seedling box having a pot-shaped seedling room formed in a grid pattern are mounted on a seedling table together with the seedling box, and are vertically intermittently fed along the seedling table. In addition, the present invention relates to a pot seedling transplanter that sequentially extrudes a row of seedlings at a predetermined position along a seedling mounting table and supplies the seedlings to a planting section, and particularly to an improvement in a seedling box feeding device.
[0002]
[Prior art]
As shown in FIG. 4 (see Japanese Utility Model Publication No. Sho 58-11135), a seedling box feeding device of this type of transplanter includes a driving unit 1, an operating unit 2, and a seedling mounting table 3.
The drive unit 1 includes a cam 4 rotatably mounted inside the transmission, an arm 6 fixed inside the transmission on a feed shaft 5 rotatably supported by the transmission case, and a cam roller 7 mounted at the tip of the transmission. A lever 9 fixed to the feed shaft 5 outside the mission (the arm 6 and the lever 9 are practically integrated); a manual seedling box feed handle 10 attached to the lever 9; An operating spring 11 acting on a lever 9 for constantly contacting the outer periphery of the lever 4, and a connecting rod 12 rotatably attached to the lower end of the lever 9 and extending toward the operating portion 2 therefrom, the cam 4 rotates. Then, the arm 6 (lever 9) swings right and left around the feed shaft 5, and moves the connecting rod 12 forward and backward in the longitudinal direction.
[0003]
The operating portion 2 has a substantially L-shape as a whole, and has an intermediate portion parallel to a feed arm 14 fixed to a rotation shaft 13 rotatably supported by the body and a connecting rod 12 of the feed arm 14. It comprises a feed rod 15 rotatably connected to the end on the near side and having a downward feed claw 15a, and a fixed rod 16 rotatably supported by the body and having an upward feed claw 16a. The feed rod 15 and the fixed rod 16 are urged toward the seedling mounting table 3 by springs (not shown). The tip of the connecting rod 12 is rotatably attached to the end of the feed arm 14 on the side near the vertical to the connecting rod 12. A pair of the operating parts 2 is installed on both sides of the seedling mounting table, both operating parts share a rotating shaft 13, and the connecting rod is connected only to the feed arm of one operating part (therefore, the other one). The feed arm of the working part need not be L-shaped).
The seedling mounting table 3 mounts a flexible pot seedling box 17 having feed holes formed at upper edges on both sides at regular intervals, and a latching edge for slidably guiding the upper edge of the pot seedling box along both sides. 3a is formed, and a predetermined position of the engaging edge 3a is cut out to form a claw hole 3b. Reference numeral 18 denotes an extruding rod for extruding a row of seedlings from the pot seedling box and supplying the seedlings to the planting section.
[0004]
In the operating section 2, when the connecting rod 12 advances and retreats, the feed arm 14 reciprocates to move the feed rod 15 up and down. At this time, the feed claw 15a is fitted into the feed hole of the pot seedling box 17 while descending. (Due to the biasing force of the spring), and escape while rising (by the inclined back surface 15b of the feed claw 15a abutting on the upper edge of the claw hole 3b). Further, the fixed claw 16a of the fixed rod 16 is fitted into the feed hole of the pot seedling box 17 as the feed rod 15 is lowered (by the urging force of the spring), and comes out with the rise (the tip of the feed arm 14 is fixed). (By pressing the inclined pressing portion 16b at the lower end of the rod 16). In this way, the reciprocating rotation of the feed arm 14 causes the pot seedling box 17 to be vertically and intermittently fed downward by one feed hole (one pitch) by the feed claw 15a, and at the same time by the fixed claw 16a at that position. It is fixed and supported by the seedling mounting table 3.
[0005]
In the seedling box feeding device, when the pot seedling box 17 is arbitrarily fed or the pot seedling box 17 is taken out of the seedling mounting table 3 during the planting operation, the rotation of the cam 4 is adjusted to the position shown in FIG. Stop and operate the manual seedling box feed handle 10. For example, if the manual seedling box feed handle 10 is repeatedly moved left and right, the pot seedling box 17 can be moved forward as in the case of the mechanical drive, and if it is moved to the left end and stopped in FIG. Since both the fixed claws 16a escape from the feed holes, the pot seedling box 17 can be pulled out from the seedling mounting table 3 by hand.
[0006]
[Problems to be solved by the invention]
This manual operation needs to be performed against the urging force of the operating spring 11, but the urging force of the operating spring 11 is set to be very strong because the cam roller 7 is driven by the cam surface. Therefore, a large force is required for the manual operation. Particularly, when the pot seedling box 17 is taken out from the seedling mounting table 3, the handle is moved to the left end with one hand and the pot seedling box is pulled out with the other hand while holding the handle. That task was extremely difficult.
The present invention has been made in view of the problems of the above-described conventional seedling box feeding device, and aims to obtain a seedling box feeding device which does not require a large force for manual operation and can easily take out a pot seedling box. It is.
[0007]
[Means for Solving the Problems]
The present invention provides a seedling mounting table for setting a flexible pot seedling box having feed holes arranged at regular intervals on both side upper edges, and a downward feed claw that fits into the feed hole while descending and escapes while rising. A connecting rod that transmits the driving force of the driving mechanism in the axial direction, and a feed arm that is connected to the connecting rod and reciprocates by receiving the driving force at the time of planting and reciprocates to move the feed claw up and down. In the seedling box feeder of the transplanter, wherein the pot seedling box on the seedling table is intermittently vertically fed by the moving feed claw, the connecting rod and the feed arm are connected via a link, and the link is connected to the link. A manual seedling box feed handle is attached, and the driving force of the connecting rod is transmitted to the feed arm via the link during planting, while the manual seedling box feed handle is rotated during manual operation. The link rotates and the manual operation force is Characterized in that it is so is transmitted to the arm sends via the serial link.
[0008]
More specifically, the structure of the seedling box feeder is configured such that a tension spring is disposed between the link and an extended portion of the connecting rod with the connecting portion interposed therebetween, and at the time of planting, the link is connected to the feed arm. The portion is located near the driving force transmission line, and the link is locked at that position by the urging force of the tension spring. In this case, when the manual seedling box feed handle is rotated to rotate the link from the position at the time of planting to the other side, the tension spring urges in that direction to hold the link at that position. It has become. Here, the driving force transmission line means a line connecting both ends of the connecting rod.
More specifically, the feed arm has a substantially L-shape, an intermediate portion of which is rotatably supported by the machine body, and one end near the side parallel to the connecting rod has a feed claw. It is connected to the lower end, and the other end near the side perpendicular to the connecting rod is connected to the link. On the other hand, the connecting rod is connected to the link at a position beyond the connecting portion between the feed arm and the link. At the time of attachment, the link abuts on the connecting rod and is locked at that position.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The seedling box feeder according to the present invention will be described more specifically with reference to FIGS. The portion of the seedling box feeding device not shown is basically the same as the conventional seedling box feeding device shown in FIG. 4 (except that a manual seedling box feeding handle is not installed in the drive section). is there. The same parts as those in the related art are given the same numbers.
In this seedling box feeder, the feed arm 14 and the connecting rod 12 are connected via a link 21. The link 21 includes a main body portion 21a, a parallel link portion 21b, and a protruding portion 21c. The feed arm 14 is rotatably connected to a side surface of the main body portion 21a (connection shaft A), and a connecting rod is provided between the parallel link portions 21b. 12 is rotatably supported on a tip 12a (connection shaft B), and a manual seedling box feed handle 22 is fixed to the protrusion 21c.
[0010]
The connecting rod 12 bends downward before the link 21 so as to bypass the link 21, bends upward again at the distal end beyond the connecting portion A, and is connected to the link 21 at the distal end 12 a as described above. Note that the line connecting the axis of the connecting shaft C (see FIG. 4) between the connecting rod 12 and the lever 9 and the axis of the connecting shaft B is the power transmission line S defined above. An extension 12b is formed at the tip of the connecting rod 12, and a tension spring 25 is arranged between a pin 23 projecting from the side of the extension and a pin 24 projecting from the side of the link body 21a. I have.
[0011]
The link 21 can rotate about the connection axis B between the position in FIG. 2 and the position in FIG. In the position shown in FIG. 2, the axis of the connecting shaft A is near (slightly below) the power transmission line S, and the tension spring 25 is below the connecting shaft B so that the link 21 is A biasing force for turning downward is applied, and the link 21 causes the lower surface of the main body 21 a to abut on the detour portion 12 b of the connecting rod 12 by the biasing force. On the other hand, in the position shown in FIG. 3, the connecting shaft A moves to a position above the power transmission line S, and the tension spring 25 is located above the connecting shaft B and rotates the link 21 upward about the connecting shaft B. An urging force is applied, and the link 21 is held at the position shown in FIG. 3 by the urging force.
[0012]
At the time of planting, if the link 21 is arranged at the position shown in FIG. 2, the reciprocating driving force of the connecting rod 12 is transmitted to the feed arm 14 via the link 21, during which the urging force of the tension spring 25 acts. Thus, the link 21 is almost always locked at this position. Since the axis of the connection shaft A is very close to the power transmission line S, the locked state is released even if the urging force of the tension spring 25 is not large (the connection shaft A is located on the opposite side of the power transmission line S). Never move).
[0013]
On the other hand, when feeding the pot seedling box by manual operation, the rotation of the cam 4 is stopped at the position shown in FIG. 4, and the manual seedling box feed handle 22 is reciprocated right and left. Then, as in the case of mechanical drive, the feed arm 14 rotates rightward (the feed rod 15 rises) in the process of moving from the position of FIG. 2 to the position of FIG. 3, and moves from the position of FIG. 3 to the position of FIG. In the process of moving, the feed arm 14 rotates left (the feed rod 15 descends), and the pot seedling boxes are fed one pitch at a time. Note that the strength of the tension spring 25 is smaller than the strength of the operation spring 11, and this manual operation can be easily performed.
Further, when pulling out the pot seedling box from the seedling mounting table, the position is as shown in FIG. At this time, the link 21 is held at this position even if the hand is separated from the manual seedling box feed handle 22 by the urging force of the tension spring 25, so that the pot seedling box can be pulled out with both hands.
[0014]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the seedling box feeder of this invention, when sending a seedling box by a manual operation, a large force is not needed and it can also take out a pot seedling box from a seedling mounting stand easily.
[Brief description of the drawings]
FIG. 1 is a plan view of a main part of a seedling box feeding device according to the present invention.
FIG. 2 is a front view (a position at the time of planting).
FIG. 3 is a front view (a position where a seedling box is taken out during manual operation).
FIG. 4 is a front view of a conventional seedling box feeding device.
[Explanation of symbols]
3 seedling mounting table 12 connecting rod 14 feed arm 15 feed rod 15a feed claw 16 fixed rod 16a fixed claw 21 link 22 manual seedling box feed handle 25 tension spring S power transmission line

Claims (4)

A seedling table for setting a flexible pot seedling box having feed holes arranged at regular intervals on both side upper edges, a downward feed claw that fits into the feed hole while descending and escapes while rising, and a driving mechanism A connecting rod for transmitting the driving force in the axial direction, and a feed arm connected to the connecting rod and receiving the driving force at the time of planting to reciprocate and move the feed claw up and down. In a seedling box feeder of a transplanter in which a pot seedling box on a seedling table is intermittently fed vertically by a nail, the connecting rod and a feed arm are connected via a link, and the manual seedling box is connected to the link. A feed handle is attached, and when planting, the driving force of the connecting rod is transmitted to the feed arm via the link.On the other hand, during manual operation, the link is turned by rotating the manual seedling box feed handle. Pivots and the manual operation force is applied to the link Seedling box feeder transplanter, characterized in that is adapted to be transmitted to the feed arm through. A tension spring is disposed between the link and an extension of the connecting rod with the connecting portion interposed therebetween, and when the plant is planted, the connecting portion between the link and the feed arm is located near a driving force transmission line, and the tension spring The seedling feeder for a transplanter according to claim 1, wherein the link is locked at the position by the urging force. When the manual seedling box feed handle is rotated to rotate the link from the position at the time of planting to the other, the tension spring urges in the direction to hold the link at that position. The seedling box feeding device for a transplanting machine according to claim 2, wherein: The feed arm has a substantially L-shape, an intermediate portion of which is rotatably supported by the machine body, and one end near a side parallel to the connecting rod is connected to a lower end of the feed rod having the feed claw, and is connected. The other end near the side perpendicular to the rod is connected to the link, while the connecting rod is connected to the link at a position beyond the connecting portion between the feed arm and the link. The seedling box feeding device for a transplanter according to claim 2 or 3, wherein the device is brought into contact with the connecting rod and locked at the position.

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