JP2002037383A - Packaging container, and manufacturing method for strut for packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container which can ensure a sufficient strength while improving the assembly workability and the workability at the time of unpacking, and a manufacturing method for a strut for the packaging container by which the struts for the packaging container can be easily manufactured at a low cost. SOLUTION: The strut 10 is respectively assembled to the tops of four corner sections of a skid base having a square shape when seen on the plane. Then, a side plate panel 2 and an end plate panel 3 are assembled to a space between the struts 10 being adjacent to each other. A strut main body 11 constituting the strut 10 is made of a steel plate which has a cross section of an approximate W-shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing container suitable for use as a container and a method of manufacturing a supporting column for a packing container for manufacturing a supporting column in the packing container.

[0002]

2. Description of the Related Art Conventionally, wooden packaging has been the mainstream packaging container for export. However, wooden packaging containers have problems such as unevenness of material and change in strength due to the effects of wood grain, knots, decay, cracks, etc., as well as poor moisture content, poor openability, and fumigation for controlling pests. There was a disposal problem. Therefore, in recent years, there has been a strong tendency to use metal containers instead of wooden containers. Metal packaging containers have an allowable strength of 12 to
It is about 20 times, and is excellent in material uniformity, bonding property, and weatherability.

FIG. 6 is an exploded perspective view for explaining a conventional example of a metal packing container. In the packing container, two side panel panels 2 and two end panel panels 3 are assembled in a plane quadrangular frame shape on the periphery of a flat quadrilateral lower waist 1, and the side panel panel 2 and the end panel panel are further assembled. 3
The top plate 4 is assembled to the upper opening formed by the above. As shown in FIG. 7, the side panel 2 and the end panel 3 are connected by an angle joint (hereinafter simply referred to as “angle”) 5 having a substantially L-shaped cross section. The angle 5 has one side 5A attached to the side edge of the side panel 2 in advance, and the other side 5B is connected to the side edge of the end panel 3 by bolts or the like.

[0004]

However, the conventional packing container using such an angle 5 has a problem that the workability of assembling the side panel 2 and the end panel 3 is poor. For example, when assembling the end panel 3 after assembling the lower end of the side panel 2 on the periphery of the lower waist 1, the lower end of the end panel 3 is assembled on the periphery of the lower waist 1 It is necessary to couple the side edge of the panel 3 to the angle 5 on the side panel 2 side. At this time, the side plate panel 2 is standing on the lower waist 1 only by assembling the lower end portion and the lower waist 1, although the side plate panel 2 itself is relatively large. The workability of the assembly for positioning and connecting the angle 5 on the panel 2 and the end panel 3 was extremely poor. Also, when unpacking the side panel panel 2 and the end panel panel 3 to remove them, there is also a problem that the workability is extremely poor.

Further, as shown in FIG. 8A, the angle 5 has a simple cross section of a substantially L-shape.
Although it has a certain strength with respect to the compressive load Wv as described above, it has sufficient strength with respect to the horizontal load Wh along the line XX and the line YY in FIG. There was also a problem that it was difficult to secure them.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a packing container capable of ensuring sufficient strength while improving the workability in assembling and unpacking, and to easily and inexpensively manufacture a column in the packing container. It is an object of the present invention to provide a method of manufacturing a supporting column for a packaging container.

[0007]

A packing container according to the present invention is characterized in that two side panel panels and two end panel panels are assembled in a plane rectangular frame shape on the periphery of a flat quadrilateral lower waist. And in a packing container in which a top plate is attached to an upper opening formed by the end panel, a lower end of a total of four columns extending upward is attached to each of the four corners below the waist, and adjacent to each other. The side plate panel and the end plate panel are assembled between the supporting columns.

[0008] A method for manufacturing a column for a packing container according to the present invention is a method for manufacturing a column for a packing container for manufacturing a column in the above-mentioned packing container, the method comprising: A substantially U-shaped steel plate having a side plate portion that forms a substantially right angle with the flat plate portion is prepared, and the central flat plate portion of the steel plate is bent to form a column body having a substantially W-shaped cross section. After that, an assembling portion capable of assembling with the side plate panel and the end plate panel is provided on one and the other of the side flat plate portions, and at the lower end portion and the upper end portion of the support body, the lower waist and the top plate are provided. It is characterized by providing an assembling part which can be assembled.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A description will be given based on FIG. In these figures, the same parts as those in the above-described conventional example are denoted by the same reference numerals, and description thereof will be omitted. FIG. 1 is a front view of the packing container of the present example, and FIG. 2 is a plan view of the packing container. Each of the side panel 2, the end panel 3, and the top panel 4 in the present example is configured by a plurality of dividable panel sections. For example, as shown in FIG. 1, the side panel 2 includes standard panels 2A and 2A.
B, 2D and the combining panel 2C are connected by a bolt or the like so as to be separable.
As shown in FIG. 3, the three panels 4A, 4B, and 4C are connected by a bolt or the like so that they can be divided.

As shown in FIG. 3, the side panel 2 and the end panel 3 are connected by a support post 10. The support 10 is
A column body 11 having a substantially W-shaped cross section, a flat L-shaped connecting plate 12 coupled to a lower end and an upper end thereof, and a column body 1
1 and a reinforcing rib 13 connected as necessary to the inside.

The column body 11 is manufactured by bending a steel plate W having a substantially U-shaped cross section as shown in FIG. That is, the steel plate W is a general-purpose channel material defined by JIS, and a side plate portion W2 substantially perpendicular to the center plate portion W1 is formed on each side of the center plate portion W1. It has a substantially U-shaped cross section. Then, as shown in FIG. 5 (b), by bending the central flat plate portion W1 at a substantially right angle, the column main body 11 having a substantially W-shaped cross section is formed. Before or after the bending of the steel plate W, as shown in FIG. 3, a hole 11A for passing a bolt for coupling with the side plate panel 2 is formed in one of the two side flat plate portions W2, On the other hand, a hole 11B for passing a bolt for coupling with the end panel 3 is formed. Thereby, one and the other of the two side flat plate portions W2,
An assembling portion that can be assembled with the side panel 2 and the end panel 3 is provided.

After the pillar main body 11 is formed in this manner, a connecting plate 12 made of a flat L-shaped steel plate as shown in FIG. 3 is attached to each of the lower end and the upper end thereof by means such as welding. Be combined. These connecting plates 12 are formed with holes 12A through which bolts for coupling with the lower waist 1 and the top plate 4 are passed. Thereby, the lower end part and the upper end part of the support main body 11 are provided with an assembling part which can be assembled with the lower waist 1 and the top plate 4. In addition, the reinforcing ribs 13 in FIG. 3 are welded to the inside thereof as necessary after bending the steel plate W to form the support body 11.

Next, a procedure for assembling the packaging container having the above configuration will be described. First, the connecting columns 12 at the lower ends of the columns 10 are connected to the four corners of the lower waist 1 to assemble the columns 10. After that, the side panel 2 and the end panel 3 are assembled between the columns 10 adjacent to each other based on the columns 10. That is, the side edges of the panels 2 and 3 are connected to the side flat plate portion W2 of the column body 11, and the panels 2 and 3 are
3 is joined to the lower edge of the waist 1. At that time, the panels 2 and 3 may be assembled for each of a plurality of panel units constituting them. In this manner, the side panel 2 and the end panel 3 are based on the pillars 10 erected at the four corners of the lower waist 1.
Therefore, the workability and safety of the assembling are significantly improved as compared with the conventional case where there is no such supporting column 10 as a reference.

During or after assembling the side panel 2 and the end panel 3, the upper end of the side panel 2 and the end panel 3 and the connecting plate 12 on the upper end of the column 10 are attached to the top panel. 4 are joined together. At that time, the top plate 4 may be assembled for each panel unit constituting the top plate 4.

At the time of subsequent unpacking, the side plate panel 2, the end plate panel 3, and the top plate 4 are removed with reference to the support 10. In that case, you may remove for every several panel part which comprises each of these panels 2, 3 and the top plate 4. As described above, since the side plate panel 2, the end plate panel 3, and the top plate 4 are removed with reference to the columns 10 standing on the four corners of the lower waist 1, the columns 1 serving as such references are used.
The workability and safety at the time of unpacking them are greatly improved as compared with the conventional case where there is no zero.

The column body 11 has a substantially W-shaped cross section as shown in FIG. 4A, and therefore has sufficient strength against a compressive load Wv as shown in FIG. 4B. XX line, YY line, VV line, and U line in FIG.
A sufficient strength can be ensured even for a horizontal load Wh along the -U line. With respect to the horizontal load Wh, it is possible to secure about four times the strength as compared with the conventional packaging container configured using the above-described angle 5 having a substantially L-shaped cross section. Demonstrate sufficient drag against collapse and buckling. In addition, the load on the top plate 4 and the load on other packing containers stacked on the top plate 4 are received by the lower back 1 via the support pillars 10, the side panel panels 2, and the end panel panel 3. The lower back 1 also receives the load of the product stored in the packing container.

Further, the column main body 11 can be manufactured simply and inexpensively by bending the steel plate W which is a general-purpose channel material as described above. If the pillar main body 11 has a rectangular cross section, the material cost and the processing cost increase, which may lead to an increase in the price of the pillar main body 11 and the entire packaging container. Also, this support body 1
The size of 1 can be optimally set according to the weight of the packaging container, the packaging volume, and the like.

[0018]

As described above, in the packing container according to the present invention, the columns are attached to the four corners below the waist of the flat square, and the side panel and the end panel are interposed between the columns adjacent to each other. Because it is a structure to assemble,
The side panel and the end panel can be assembled and removed with reference to the pillars located at the four corners below the waist. As a result, sufficient strength is secured while improving the workability when assembling and unpacking. can do. In addition, in the packing container, the strength of the packing container can be more sufficiently secured by forming the column main body constituting the column into a substantially W-shaped cross section.

Further, according to the method for manufacturing a column for a packing container according to the present invention, the column is formed by bending a general-purpose steel plate, so that the column can be manufactured simply and inexpensively.

[Brief description of the drawings]

FIG. 1 is a front view of a packing container according to an embodiment of the present invention.

FIG. 2 is a plan view of the packing container of FIG.

FIG. 3 is an enlarged view of a circle III in FIG. 2;

FIG. 4A is a cross-sectional view of a column main body in FIG. 3,
(B) is a side view of the support main body.

5 (a) and 5 (b) are explanatory diagrams of a procedure for forming the support body in FIG. 3;

FIG. 6 is an exploded perspective view of a conventional packaging container.

FIG. 7 is a plan view of a joint portion between the side panel and the end panel in FIG. 6;

8A is a sectional view of the angle joint in FIG. 7, and FIG. 8B is a side view of the angle joint.

[Explanation of symbols]

 Reference Signs List 1 lower waist 2 side plate panel 3 end plate panel 4 top plate 10 support 11 support main body 12 connecting plate 13 reinforcing rib W steel plate W1 central flat plate portion W2 side flat plate portion

Claims (3)

[Claims] 1. An upper opening formed by two side panel panels and two end panel panels assembled in a plane quadrangular frame shape on a peripheral part of a flat quadrilateral below the waist, and formed by the side panel panels and the end panel. In a packing container on which a top plate is assembled, the lower ends of a total of four columns extending upward are assembled on each of the four corners below the waist, and the side panel and the side panel are interposed between the columns adjacent to each other. A packing container, wherein the wife plate panel is assembled. 2. The packing container according to claim 1, wherein the support has a support body made of a steel plate and bent into a substantially W-shaped cross section. 3. A method for manufacturing a support for a packing container for manufacturing a support in the packing container according to claim 1, wherein the center flat plate is provided on both sides of a center flat plate portion. A steel plate having a substantially U-shaped cross section on which a side plate portion substantially perpendicular to the portion was formed, and the central flat plate portion of the steel plate was bent to form a column body having a substantially W-shaped cross section. Later, on one and the other of the side flat plate portions, an assembling portion that can be assembled with the side plate panel and the end plate panel is provided, and at the lower end portion and the upper end portion of the support body, the lower waist and the top plate are assembled. A method for manufacturing a support for a packaging container, comprising providing a possible assembling portion.