JPH10201375A - Raising seedling tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that conventional raising seedling trays are difficult to separate into single ones at the time of using because they are respectively in completely the same shape and are in close contact with one another to be superimposed in the case of superposing them at the time of storing, housing and carrying in an unused state. SOLUTION: This raising seedling tray 1 of a prescribed standard obtained by vertically and horizontally arraying prescribed number of cells is provided with recessed parts 4 (being raised parts on the rear face) at plural places which are at positions independent from respective cells 2 on ribs 5 between the respective cells 2 and are asymmetric at the time of rotating by 180 deg.. In addition, recessed parts 4 are provided at plural places which are at positions where the respective ribs 5 cross with each other and are asymmetric at the time of rotating by 180 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a seedling raising tray, and when storing, storing, or transporting unused trays in an overlapping manner, the trays come into close contact with each other and overlap.
The present invention relates to a structure for preventing separation of sheets one by one.

[0002]

2. Description of the Related Art In recent years, mechanization of transplanting of seedlings such as vegetables by a fully automatic transplanter has been desired, and standardization of a nursery tray for facilitating mechanical transplantation has been proposed. According to this, in addition to the outer frame dimensions of the tray, the arrangement of cells and the number of holes are standardized, and this tray is fitted to a conventional nursery box for paddy rice for use in raising seedlings. I have.

[0003] These seedling raising trays are generally formed integrally by vacuum forming or the like. However, when the trays are stacked when they are stored, stored, or transported in an unused state, each of the trays is overlapped. However, since the trays have exactly the same shape, the trays closely adhere to each other and overlap, and there is a problem that it is difficult to separate the trays one by one at the time of use.

Therefore, for example, utility model registration No. 2513
As disclosed in Japanese Patent Publication No. 101-101, a means for providing a plurality of recesses forming step portions projecting outward on the ribs of the cells so that adjacent cells are asymmetric with each other in the seedling raising tray is adopted. Things have been suggested. According to this configuration, the outer step formed by the concave portion is superimposed on the rib on which the concave portion is not formed, so that the trays can be prevented from sticking to each other.

[0005]

However, in the seedling raising tray having the above-mentioned structure, since the individual shapes of the cells are different from each other, the growth conditions of the seedlings sown in each cell are different. That is, since the seedling grows also in the direction of the concave portion due to the formation of the concave portion, the growth direction of the seedling is different between the cell with the concave portion and the cell without the concave portion, and the problem remains that the uniform seedling is hindered. Was.

[0006]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 has a predetermined number of cells arranged vertically and horizontally to raise seedlings of a predetermined standard. In the tray, means is provided in which a plurality of concave portions (protrusions are formed on the back surface) are provided at a plurality of positions 180 degrees rotationally asymmetric on the ribs between the cells at positions independent from the cells. Also, the concave portion is located at the position where each rib intersects.
Means of providing at a plurality of positions asymmetrical by 80 degrees is adopted.

[0007] With this configuration, when a plurality of seedling raising trays are stacked, the concave portion is located at a different position in each tray. The upper and lower trays are brought into contact with the appropriate rib surface to form a gap between the upper and lower trays by the height of the raised portion, so that the trays can be easily separated from each other.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a seedling raising tray according to the present invention will be further described with reference to the drawings. 1 and 2, reference numeral 1 denotes a seedling raising tray, which is 128 (8 × 16 rows) or 200 (10 × 20) according to the standard.
Column 2). Reference numeral 3 denotes a drain hole provided at the bottom of the cell 2. Numerals 4 denote recesses provided at a plurality of positions on the ribs 5 between the cells and at positions independent from the cells, and as shown in the drawing, raised portions 4a are formed on the back surface of the ribs.
Is formed. In the drawing, the recess is provided independently at the center of the position where each rib intersects, but two cells can be provided independently on adjacent ribs so as not to contact each cell.

This kind of seedling raising tray is integrally molded by using a so-called three-cutter mold. The plurality of recesses 4 provided on the ribs 5 are located at the same position between the three adjacent trays. Are provided so as to be different from each other, and are provided at positions that are different from each other even when the entire surface or each surface is rotated by 180 degrees (referred to as a 180-degree rotationally asymmetric position).

Therefore, even if the seedling raising trays cut on each side are stacked, the positions of the upper ridge and the next lower dent are different between the upper and lower trays. In order to save space by reducing the height, the raised portion does not enter the recess 4 of the next stage, and the flat rib 5
And a gap is formed between the upper and lower seedling raising trays by the height of the raised portion to facilitate separation from each other.

In addition to the concave shape depressed from the rib surface as shown in the above-described embodiment, the concave portion has a convex shape which protrudes from the rib surface and indents upward on the back surface of the rib. Needless to say, it works.

[0012]

As described above, the seedling trays according to the present invention can be stacked without leaving close contact with each other due to the presence of the concave portions provided at the 180-degree rotationally asymmetric positions on the ribs. Is possible, so much space is not required when storing, storing or transporting, but it is possible to separate them one by one very easily when using them, which makes it possible to greatly reduce the labor of sowing work. The effect can be expected.

Further, since the recesses are provided independently on the ribs between the cells instead of the cells themselves, all the cells on the tray can have the same shape. And the excellent effect that a uniform seedling can be raised can be expected.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a seedling raising tray according to the present invention with a part cut away.

FIG. 2 is a partial perspective view of a seedling raising tray.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nursery tray 2 Cell 3 Drainage hole 4 Concave part 4a Raised part 5 Rib

Claims (2)

[Claims] In a nursery tray of a predetermined standard in which a predetermined number of cells are arrayed vertically and horizontally, concave portions are provided at a plurality of positions 180 degrees rotationally asymmetric at positions independent from each cell on ribs between the cells. Raising seedling tray. 2. The seedling raising tray according to claim 1, wherein the positions where the recesses are provided are a plurality of positions 180 degrees rotationally asymmetric at positions where the respective ribs intersect.