JPH09226823A - Iron angle material and laminated steel plate pack protected by the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a sheet product in the vicinity of a corner from being bent when laminated sheet products are packed by making an outer bent part in a protruding state so that a space exists between an inner bent part and the corner of laminated steel plates. SOLUTION: An iron plate as thick as 2mm is bent into a cylinder to make an outer bent part 6B into a protruding arc, and a space 10 corresponding to a thickness of this iron angle material 2 is provided between an inner bent part 6A and a corner 8. Therefore, at the time of mounting and binding, a sheet product 1A in the vicinity of the corner 8 of laminated steel plates 1A may not pressed by the inner bent part 6, thereby preventing the sheet product 1A which is an object to be protected from being bent.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an iron angle member and a laminated steel plate package protected by the angle member.

[0002]

2. Description of the Related Art When stacking a laminate of sheet products such as tinplate sheets, as described in, for example, Japanese Utility Model Publication No. 1-44442, a steel sheet laminate is generally installed at each corner during the packing process. An iron angle member is attached to protect it. For example, as shown in FIG. 2, which is a partially cutaway external perspective view of a packaged package, when a sheet product such as tin plate is packaged, a sheet steel laminate 1 in which the sheet products are stacked in a rectangular parallelepiped shape.
Is wrapped with a wrapping material 9, and iron corner materials 2, 3 and 4 having a plate thickness of about 2 mm are applied to the corner portions to protect the corner portions.

These conventional iron angle members 2, 3, 4
For example, as shown in the sectional view of FIG. 3, an iron plate is bent at about 90 °. In addition, in FIG. 3, reference numeral 6 denotes a bent portion including an inner bent portion 6A and an outer bent portion 6B, and the inner bent portion 6A is in contact with the corner portion of the sheet product laminate through the packaging material. Further, the iron angle material is often mounted from the outermost side of the laminated body covered with an iron plate or cardboard exterior material, but when the bundle is bound, the end formed by pushing the iron angle material into contact with each other. To prevent flaws,
Generally, the cardboard angle is not sandwiched between the armoring material and the iron armoring material, and a cardboard angle is further sandwiched between the armoring material and the iron angler material.

Then, a steel or plastic band 5 is hung on the outside of the iron angle member to bind the iron angle member, and the packing operation is completed.

[0005]

The iron angle material is conventionally subjected to bending work by pressing or forming so as to have an angle of about 90 °, and is put to practical use. Its cross-section ideally has a perfect right-angled bend 6 as shown in the cross-sectional view of the ideally machined iron angle bar in FIG. However, actually, as shown in FIG. 3, the bent portion 6 is bent inward with a certain degree of curvature.

Therefore, as can be seen from the sectional view of FIG. 5 showing the bending of the sheet product when the conventional iron angle member is attached, the iron angle member 2 is replaced with the steel plate laminate 1 of the sheet product 1A.
When attached to the corner of the unit and bound with a band, the inner bent portion 6
Since A strongly presses the sheet product 1A in the vicinity of the corner portion, there is a problem that the "folded" 7 is included in the sheet product 1A at such a portion. For simplicity, in FIG.
Packing members such as exterior materials other than the iron angle member 2 are not shown.

In order to prevent this, a cushioning material such as an angle made of cardboard is usually used between the iron angle material and the sheet product, or the thickness is increased to enhance the cushioning effect or weaken the band binding force. Is taken. However, the addition of cushioning materials and the increase in thickness will increase the cost of packaging materials. Further, even if the band binding force is weakened to the lower limit of the binding force required for packaging, the fold cannot be completely eliminated.

It is practically impossible to improve the machining accuracy of the iron angle member so that the squareness of the bent portion is perfect because the machining cost is too high and the yield is reduced. Then, this invention makes it a subject to provide the iron angle material which can protect a laminated body corner part, without producing | folding a sheet | seat product which forms a steel plate laminated body.

[0009]

DISCLOSURE OF THE INVENTION The present invention is an iron angle member for protecting a corner portion of a steel sheet laminate, wherein the outer bending portion is convex so that a space is formed between the inner bending portion and the corner portion. The iron angle material is characterized by Further, the present invention is a laminated steel plate package in which a corner portion is protected by the iron angle material.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the iron angle member of the present invention, the outer bent portion has a convex shape and a space is provided between the inner bent portion and the corner portion of the steel sheet laminate as the object to be protected. Does not cut into corners. That is, the sheet product forming the laminated body is not pressed at the corner portion. Therefore,
In the laminated steel sheet package whose corner portion is protected by the iron angle member, the sheet product as the protected object does not break.

Further, according to the present invention, it is not necessary to add a cushioning material such as a cardboard angle or to increase the thickness, thereby reducing the cost of the packing member, and without weakening the band binding force as in the conventional case. As a result, the side effect of increasing the airtightness of the package is also obtained.

[0012]

1 is a cross-sectional view showing a state in which an iron angle member of an embodiment of the present invention is in contact with a corner portion of a steel plate laminate. In FIG. 1, 8 is a corner portion. The same members as those in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted. For simplicity, FIG. 1 does not show packaging members such as an exterior material other than the iron angle member 2.

As shown in FIG. 1, the iron angle member 2 of this embodiment is formed by bending a steel plate having a thickness of 2 mm into a cylindrical shape and bending the outer bent portion 6 thereof.
B has a convex arc shape, and a space 10 corresponding to the plate thickness of the iron angle member 2 is provided between the inwardly bent portion 6A and the corner portion 8. Therefore, at the time of mounting and binding, the steel plate laminate 1 near the corner portion 8 The sheet product 1A is not pressed by the inner bent portion 6A.

As an example of the invention of the laminated steel sheet package whose corners are protected by the iron angle material of the present invention, a tin plate sheet product (hardness standard JIS T4CA) having a plate thickness of 0.2 mm is formed into a rectangular parallelepiped shape.
First, wrap the stacked stacks with polyethylene-coated kraft paper for packaging (coating thickness 20 μm, kraft paper 75 g / m ² ), and then use a cardboard angle for preventing contact flaws at each corner as shown in Fig. 1. The iron angle material shown was applied, and a 0.7 mm-thick steel band was further used to bind at a tightening pressure of 7 kg / cm ² to form a package. On the other hand, as a comparative example, the conventional iron angle material shown in FIG. 3 was used, and the same condition as that of the above-mentioned invention example was produced under other conditions. Incidentally, the packing appearance is the same as that shown in FIG.

After unpacking them and inspecting the sheet products near the upper and lower surfaces of the laminate, which are particularly susceptible to breakage,
In the comparative example, the sheet products from the upper surface to the fourth sheet and from the lower surface to the third sheet were found to have a breakage corresponding to the grade, whereas in the invention example, there was no sheet product in which a break occurred. Thus, the effect of the present invention was verified. In the present embodiment, the iron angle material outer bent portion is manufactured by the cylindrical bending process, so the convex shape is an arc shape, but the iron angle material of the present invention is not limited to this, and the outer bent portion has a convex shape. It goes without saying that rectangular shapes, elliptical shapes, and any other shapes can be included as long as there is a space between the inner bent portion and the steel sheet laminate corner portion.

[0016]

According to the present invention, when the laminated sheet products are packed, not only the sheet products in the vicinity of the corners do not break, but also the cost of the packing material is reduced and the airtightness of the packing body is increased. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state where an iron angle member of an embodiment of the present invention is in contact with a corner portion of a steel plate laminate.

FIG. 2 is a partially cutaway external perspective view of a packaged package.

FIG. 3 is a cross-sectional view of a conventional iron angle member.

FIG. 4 is a cross-sectional view of an ideally made iron angle member.

FIG. 5 is a cross-sectional view showing bending of a sheet product when a conventional iron angle member is attached.

[Explanation of symbols]

 1 Steel plate laminated body 1A Sheet product 2, 3, 4 Iron angle material 5 Band 6 Bending part 7 Folding 8 Corner part 9 Packaging material 10 Space

Claims (2)

[Claims] 1. An iron angle member for protecting a corner portion of a steel sheet laminate, wherein the outer bending portion is convex so that a space is formed between the inner bending portion and the corner portion. Angle material. 2. A laminated steel plate package in which a corner portion is protected by the iron angle member according to claim 1.