JPH0775449A - Seedling-holding sheet structure - Google Patents

Abstract

PURPOSE:To provide a sheet structure capable of surely and smoothly starting the separation of a seedling from a seedling-holding sheet immediately before transplantation, enabling sure longitudinal transfer of seedling in satisfactory state at the end of seedling delivery and enabling effective utilization of the natural advantage of the seedling-holding sheet by a simple modification comprising the forming of recesses and protrusions at both ends in place of the forming of holes. CONSTITUTION:A number of holes 2a to entangle the roots of seedlings are opened on a seedling-holding sheet A which can be transferred in engaged state by a longitudinal transfer mechanism of a seedling-holding table. A number of protrusions 3a are formed in place of holes on the whole length of both upstream and downstream side edges 3, 3 in the longitudinal transfer direction of the seedling-holding sheet A. The start of peeling of the seedling from the seedling-holding sheet A by a separation member in the longitudinal transfer is easily and smoothly performed immediately before the end of the longitudinal transfer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling placing sheet for ensuring vertical feeding operation of planted seedlings on a seedling placing table, and more specifically, separating the seedling placing sheet from the seedling immediately before the end of vertical feeding. The present invention relates to a technology for facilitating the operation while maintaining a reliable vertical feed action.

[0002]

2. Description of the Related Art As a planting means of this kind, the actual construction of Shokai 57 is used.
The one disclosed in Japanese Patent Publication No. 203723 is known,
A scraper-like separating member is arranged on the tooth ring portion around which the seedling placing sheet is wound so that the seedling and the seedling placing sheet can be separated well.

[0003]

[Problems to be Solved by the Invention] Since the seedling-placing sheet is one in which the seedlings are placed and integrated with each other from the start of raising the seedlings, good root feeding and good vertical feed operation for planting are performed. From this point of view, it is desirable to form holes for rooting on the entire surface of the sheet. However, if the root and the sheet are entwined well, it becomes difficult to bite the separating member between the seedling and the sheet at the time of the start of the vertical feeding, and the peeling separation becomes insufficient and the vertical feeding is defective. Cause of
It is not preferable in terms of separation operation. The present invention is to improve the structure of the seedling placing sheet so that the seedling and the seedling placing sheet at the lower end of the seedling placing table can be peeled off and separated effectively.

[0004]

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, a root of a seedling can be entangled with a seedling placing sheet formed by a vertical feeding mechanism on a seedling placing base so as to be capable of engaging and feeding. Along with forming a large number of holes, both ends of the seedling placing sheet on the upper side and the lower side in the vertical feed direction are formed into a holeless shape over all the sides, and the protrusions that bite into the root part are formed on these both sides. It is characterized in that a recessed portion into which a portion or a root portion is inserted is formed.

[0005]

[Function] If the upper edge of the seedling placing sheet in the longitudinal feed direction is made non-perforated, the roots of the seedling will not get entangled in this part, and the seedling placing sheet and the seedling will be separated from the seedling raising time. Has become. Therefore, at the time of vertical feeding, the separating member easily enters between the end of the seedling placing sheet and the root of the seedling, so that the peeling and separating start operation can be performed smoothly and smoothly as compared with the conventional case.

By the way, the sheet seedling in which the seedling-placing sheet and the seedling are integrated is rectangular in a plan view, and there is vertical and horizontal distinction, but there is no distinction between upper and lower sides in the feeding posture, and the above-mentioned "on both sides in the longitudinal direction". It can be a "good side". Therefore, in reality, both the upper end and the lower end in the longitudinal feed direction must be formed without a hole, which causes a new inconvenience. That is, just before the completion of feeding one sheet of seedlings, the lower end of the holeless portion is fed by the driving toothed ring, but since the root is not entangled in this portion, the forced feeding force is hardly transmitted to the seedlings, and it is considered that feeding is defective. There was a chance Therefore, in the present application, on the non-perforated end side, since the convex part that digs into the root part or the concave part into which the root part enters is formed, the sheet and the seedling are vertically engaged and the vertical feeding force from the sheet to the seedling is provided. As a result, the forced feeding force can be transmitted to the seedling even at the end of feeding, and since the engaging portion is due to the unevenness, it does not adversely affect the initial biting of the separating member at the start of feeding.

[0007] In addition, although roots are not attached to both upper and lower sides in the vertical feeding direction, the roots do not unnecessarily extend in the gap with the nursery box because there is no entanglement of roots at the ends. There is an aspect that it is easy to take out the sheet grown seedlings grown from the nursery box,
As described above, there is no particular adverse effect due to omission of holes at the sheet edge.

[0008]

Therefore, the separation operation just before the planting of the seedling placing sheet and the seedlings can be performed by a simple modification in which the projections and depressions are formed instead of the holes at both ends in the feeding direction in order to prevent the entanglement of the roots. In addition to being able to start reliably and smoothly, vertical feeding at the end of feeding can be ensured and good vertical feeding can be achieved, and it is possible to effectively provide the original advantages of the seedling placing sheet.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a seedling-raising box B and a seedling-placing sheet A formed to have a size such that it can be inserted into the box.
Row-shaped engagement holes 1 are formed at both left and right ends of the seedling placing sheet A made of a resin material, and by using the left and right engaging holes 1, a vertical feeding mechanism C in a seedling placing table 5 described later engages. The root-entangled portion 2 that can be fed and is formed by arranging a large number of holes 2a for entangling the roots of seedlings in the middle of the sheet.
Are formed in two places on the left and right sides.

In addition, holes are provided at both ends of the seedling placing sheet A in the vertical feed direction in order to assist the first thrusting operation of the separating member 6 which will be described later and to obtain a reliable vertical feed action at the end of feeding. Instead of 2, the edge portion 3 having the protrusion 3a is provided. That is, both ends of the seedling placing sheet A on the upper side and the lower side in the longitudinal feeding direction are formed into a holeless shape over the entire sides thereof, and the convex portions 3a that bite into the root portions are formed on the both end portions 3 and 3. Many are formed. The seedling-raising box B is a lidless box-like shape having a bottom surface 8 in which a large number of ventilation / water-passing holes 7 are formed and a circumferential side wall 9 with a folded portion 4, and is of a size just to accommodate the seedling-carrying sheet A. There is.

FIG. 2 shows the seedling placing table 5 and the vertical feeding mechanism C in the rice transplanter. The vertical feed mechanism C is provided with left and right sprocket-shaped upper and lower toothed wheels 11 and 12 that engage with the engaging holes 1 at the left and right ends of the seedling placing sheet A, and the lower toothed wheel 12 is a driving wheel. Then, a separating member 6 having a scraper portion for separating the seedling placing sheet A and the seedlings is arranged close to the lower tooth ring 12, and the engaging hole 1 and the lower tooth ring 1 are arranged.
It also contributes to surely occlude 2 and. Since the roots are not entangled in the edge portion 3 of the sheet end of the vertically fed sheet seedlings, the separating member 6 easily enters between the seedling placing sheet A and the seedlings and exhibits a good separating function. . The seedling placement sheet A separated and peeled off is guided by the guide member 13 and collected by the receiving member 14.

As shown in FIG. 3, at the end of the vertical feeding, the seedlings are fed through the edge portion 3 on the lower side in the feeding direction. In this portion, the convex portion 3a that bites into the root portion feeds the seedlings. It is in the state of pushing backwards, and can be fed vertically without slipping.

As shown in FIG. 4, the vertical feed belt 1 shown in FIG. 6 is used for the vertical feed of a general mat seedling without a sheet.
0 is wound around the upper and lower toothed wheels 11 and 12 by the engagement of the hook 10a and the locking hole 10b so that a belt type vertical feed mechanism C can be configured. In addition, as shown in FIG.
Has a three-part structure including an upper mounting surface 5a, an intermediate mounting surface 5b, and a separating member 6 which is a lower mounting surface, so that the vertical feed belt 10 can be loaded and unloaded from the upper and lower gap slits 15 and 16. Further, as shown in FIG. 5, in order to prevent looseness of the left and right intermediate portions of the vertical feed belt 10, a tubular guide wheel 17 is attached to each of the upper and lower tooth wheel shafts 11a and 12a.

[Other Embodiments] As shown in FIG. 7, the upper and lower edge portions 3 and 3 of the seedling placing sheet A have a shape in which a plurality of downward recessed portions 3b into which a root portion is not penetrated are formed. Is also good.

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]

FIG. 1 is a perspective view showing a nursery box and a seedling placement sheet.

FIG. 2 is a partially cutaway side view showing the structure of a vertical feed mechanism.

FIG. 3 is a side view showing a vertical feeding state immediately before the end of feeding the sheet seedlings.

FIG. 4 is a side view showing the structure of a belt type vertical feed mechanism.

FIG. 5 is a plan view showing the relationship between the belt type vertical feed mechanism and the seedling placing table.

FIG. 6 is a perspective view of a single vertical feed belt.

FIG. 7 is a side view of the seedling placing sheet showing another structure of the edge portion.

[Explanation of symbols]

 2a hole 3a convex portion 3b concave portion A seedling mounting sheet

Claims (1)

[Claims] 1. A seedling placing sheet (A) formed so as to be engageable and feedable by a vertical feeding mechanism on a seedling placing table, is provided with a large number of holes (2a) in which the root portion of the loaded seedling can be entangled, and the seedling is also provided. The upper and lower sides of the mounting sheet (A) in the longitudinal feed direction are formed into a holeless shape over all the sides, and the both sides are projected into the root (3a). Alternatively, a recessed portion (3b) into which the root portion is inserted
The seedling mounting sheet structure that has been formed.