JPH07121738B2 - Packaging box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box for packaging welding wires and the like, and more particularly to a packaging box with improved portability.

[0002]

2. Description of the Related Art Welding wires are wound around a coil core in a cylindrical shape. The welding wires are stored in a product warehouse from a manufacturing factory, shipped, transported, and delivered to users. The welding wire is contained in a rectangular parallelepiped cardboard box. That is, the welding wire wound around the coil core is carried while being housed in a rectangular parallelepiped cardboard box.

However, this welding wire is considerably heavy, for example, 20 Kg per winding. This heavy object is stored in a corrugated cardboard box of 28 cm square and 11 cm high, for example.

When carrying this welding wire, the worker first tilts the cardboard box in which the welding wire is packed, first inserts one hand between the bottom surface of one edge and the floor, and then the other. The other hand is inserted between the lower surface of the edge portion and the floor, and after insertion of both hands is completed, the cardboard box is lifted and transferred to a predetermined position.

[0005]

However, it is not easy to lift such a heavy object in an unstable posture that is difficult to hold, and its transportation is also a heavy work. For this reason, when the worker lifts the product, the back may be hurt, or the product may slip from the hand and drop to the foot during transportation. In particular, since workers usually wear gloves, the corrugated cardboard box originally made of paper is slippery, and if handled a little carelessly, the product may fall to the feet and there is a risk of injury to the feet.

It should be noted that a pair of folding lines parallel to one ridgeline of the box is provided at the center of this ridgeline, and a cutting line for connecting the ends of each foldline to each other is provided, whereby the centerline of the ridgeline is provided. A packaging box provided with a recess has been proposed (Japanese Patent Laid-Open No. 3-14449).
issue). It is possible to carry the packaging box by holding this recess. However, since this dent is formed by cutting a part of the box, there is a drawback that the strength is weak. Also, since the box has a hole with the recess,
Incomplete packaging.

The present invention has been made in view of the above problems, and provides a packaging box in which a cardboard box containing a heavy object can be easily lifted and the risk of dropping thereof is eliminated. With the goal.

[0008]

A packaging box according to the present invention is a packaging box substantially composed of six sides,
It has at least one recess provided in a corner where three ridges gather, and each recess is formed by being bent inward by three fold lines connecting the ridges to each other. To do.

Further, the packaging box according to the present invention is a packaging box having substantially six sides, and three ridge lines are connected to each other at least at one corner where the three ridge lines are gathered. Is provided, and the corners can be bent inward by this fold line.

[0010]

In the present invention, at least one corner of the four corners of the rectangular parallelepiped packaging box has a recess formed by three fold lines connecting the three ridge lines gathering at each corner. . For this reason, since this recess is formed without providing a cutting line, the strength is high and the packaging quality is not impaired.

Then, the operator can lift the box by holding the recess. It is easy for an operator to grab the concave portion, so that the lifting operation is easy. Further, since the concave portion is gripped for transportation, the hand does not slip from the box and the transportation work is easy.

At least one recess may be provided. The box can be lifted by inserting a finger between the one recess and the floor surface, lifting and tilting one of the boxes, and inserting a hand into the gap formed in the other. Therefore, in the present invention, the number of recesses may be any one of 1, 2, 3, ...

However, it is preferable that the bottom surface of the packaging box should be 2
If the individual recesses are provided, both hands can be used at the same time and the fingers can be inserted into the two recesses to lift the box.

Further, by providing the recesses on both the upper surface and the bottom surface of the packaging box, even if the packaging box is once placed upside down during transportation, the box can be easily lifted. There is no change in sex.

In the present invention, a fold line for forming the recess is provided in advance, and if necessary, the corner portion provided with the fold line is pushed into the inside of the box.
A recess may be formed.

[0016]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an assembled state of a packaging box according to an embodiment of the present invention when viewed from above, FIG. 2 is a perspective view of the same when viewed from below, and FIG. 3 is a front view. Figure 4
Is a bottom view and FIG. 5 is a development view. The box 1 is made of, for example, cardboard and has a rectangular parallelepiped shape. And 4 on the bottom
The corner portion is bent inward to form the recess 2.
The concave portion 2 is obtained by cutting the corner portion of the rectangular parallelepiped box 1 obliquely with a flat surface and scraping off a right-angled triangular pyramid, and further forming an inner recess in the shape of a triangular pyramid with the diagonal flat surface as the bottom surface. Make a shape like this.

As shown in the development view of FIG. 5, the unfolded shape of the packaging box is substantially the same in outline as the unfolded shape of the conventional packaging box. That is, it has a bottom surface portion 3 that serves as the bottom surface of the box, a top surface portion 4 that serves as the top surface, a front surface portion 10 that serves as the front surface, a back surface portion 11 that serves as the back surface, and side surface portions 5, 6 that serve as the side surfaces. As a margin for glue, parts 7, 8, 9, 12, 13, 14, 15 necessary for adhesive fixing are provided. A folding line 16 is provided to fold these portions at a substantially right angle.

These polygonal lines are the same as the conventional ones,
By folding along the folding line 16, a rectangular parallelepiped packaging box is assembled, and the portions 7 to 9 and 12 to 15 are adhered and fixed to complete the packaging by the conventional packaging box. Therefore, these fold lines 16 are lines that become the ridge lines of the box.

Thus, in this embodiment, the bent lines 17 are further provided at the four corners of the bottom surface portion 3. This broken line 17
Is a portion 17a provided on the front surface portion 10 or the rear surface portion 11.
And a portion 17b provided on the bottom surface portion 3 and side surface portions 5, 6
And a portion 17d provided on the glue margin portions 12 to 15. When the length of one side of the top surface and the bottom surface of this packaging box is 250 to 300 mm, the length of the sides OA and OB of each triangular portion formed by the folding lines 17a to 17d and the folding line 16 is, for example, 60 to
70 mm, the length of the side OC is, for example, 30 to 40 mm, the side O
For example, the length of D is 60 to 70 mm, and the length of the side OE is 30.
-40 mm. This fold line 17 becomes the ridgeline of the box 3
At the position where the individual folding lines 16 gather, these folding lines 16 are provided so as to be connected to each other.

The folding lines 16 and 17 can be formed by a method such as pressing as in the conventional case. Further, the perforation may be a fold line, or the fold line may be provided by Thomson having a notch formed over a depth of half in the thickness direction.

In the packaging box constructed as described above, first, the contoured shape developed as shown in FIG. 5 is bent substantially at a right angle at the folding line 16 to form a rectangular parallelepiped shape. In the process of bending, bend line 17
Bending is performed while pushing the part of the point O inside the box along the line so that the point O comes inside the rectangular parallelepiped. As a result, the packaging box 1 having the recess 2 is assembled as shown in FIGS. The polygonal line of the recess 2 is provided so as to connect the three ridge lines.

Therefore, the upper surface portion 4 is opened, and the welding wire (not shown) wound around the coil core is put in the box. The coiled welding wire is housed with its axis perpendicular to the top and bottom surfaces of the welding packaging box. In this case, the recesses 2 at the four corners of the bottom surface of the box protrude inside the box, but since the welding wire is wound in a coil shape, the recess 2
Does not get in the way.

Next, the glue margin portions 7 to 9 and 12 to 15 are overlapped with other portions and fixed by adhesion, whereby the assembly of the packaging box containing the welding wire is completed. When assembling the packaging box, except for the adhesive fixing of the upper surface part 4, other parts are adhered and partially assembled, and after the welding wire is loaded, the upper surface part 4 is adhesively fixed. The welding wire may be enclosed.

Further, at the same time, the product of the present invention is
Whether hand-wrapped, semi-automatic or fully automatic,
After bending by the same method as before, adhesively fix it with hot melt etc., then press the parts gently with your fingers aiming at the fold lines provided in advance at the four corners, or by automatically pressing the protruding member lightly The recess can be easily formed.

In this way, the packaging box 1 in which the welding wires are packed has the recesses 2 at the four corners thereof, and therefore, when placed on the floor of a factory or a warehouse, the recess 2 is used as a floor. There is a gap between them. Therefore, the worker puts his / her hand into the recess 2 and lifts the box 1 with the tip of his finger inserted into the recess 2. In this way, since the recess 2 is provided at the corner of the box 1, it is not necessary to incline the box 1 and put a hand in the space, and the hand can be directly inserted into the recess 2. , Easy to lift the box 2. Further, since the box 1 can be carried by locking a finger in the concave portion 2, the box 1 will not be dropped by a hand slipping from the box. Therefore, according to the present embodiment, it is possible to remarkably improve the safety during transportation and improve the workability of carrying. Further, since the concave portion 2 is not formed by cutting the corner portion but is formed by denting the corner portion inside the box, the strength of the concave portion 2 portion is high.

The present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made.

For example, as shown in FIG. 6, recesses 2 may be provided at the eight corners of the top and bottom of a rectangular parallelepiped box. A developed view of this packaging box is shown in FIG. In this way, any of the eight corners can be the recess 2.

However, as shown in FIG. 7, side views 10, 1
1 is cut out in a triangular shape in accordance with the edge of the recess 2. The cut-out edge 18 is parallel to the edge of the concave portion 2, but is located slightly on the side face center side with respect to the line aligned with the edge. That is, in the developed view, the notch edge 18 is formed by being cut out in a triangular shape larger than a triangular portion cut by a line aligned with the edge of the recess 2. Then, a polygonal line 1 for cutting these parts at a right angle
6 is provided.

The broken line is a straight line in the embodiments of FIGS. 5 and 7, but a development view is shown in FIG . 8 , for example.
As shown in the figure,
The polygonal line 24 may be a combination of lines. Use broken line 20
If it is, the recess will rise higher than the fold line 17 and will not slip.
It gets harder. The polygonal line 22 is the polygonal line 20 (the three corners are curved.
It has a larger area and is easier to hold. Fold line 23 is folded
The area is larger than the line 22, and the finger can go deep inside. Broken line 2
4 is easy to hold because it spreads laterally when you insert your finger
Yes. Furthermore, as shown in the development view of FIG.
It is also possible to provide a, 21b, and 21c, and select the fold lines according to the size of the stored items and the like so that the recesses having an appropriate size can be formed. This allows
The size of the recess can be selected when the stored items are determined, and a packaging box with high versatility for the stored items can be obtained.

Further, the product of the present invention has an advantage in that the recess may be provided in the container in advance as described above, and that the recess can be provided if necessary after the container is formed. Also, as shown in FIG.
The main fold line 16 provided in the parts 12, 13, 14, 15 is
If it is formed on the inside of the wall, a thick sheet such as corrugated board is assembled.
Even when it stands upright in a packaging box, it swells due to the thickness of the paper.
Does not occur.

Furthermore, the packaging box of the present invention can be used not only for packaging welding wires but also for packaging all kinds of articles. That is, it is applicable as long as it is possible to provide such recesses 2 in at least two places among the four corners of the box, such as medicine, confectionery, powder, etc.
Instead of a rectangular parallelepiped shape, a columnar shape or an irregular shape may be used as long as the interior parts do not exist up to the corner of the box. Also,
Even in the case of a rectangular parallelepiped-shaped article, if a foam styrene or the like for impact absorption is arranged around it and a gap can be provided at least at the corner between the inner surface of the box and the article, The packaging box of the invention can be applied. Such articles include audio / video equipment such as amplifiers, video and speakers, and electrical products such as personal computers.

Further, cans of canned beer and the like are arranged and packed in a grid pattern in a conventional rectangular parallelepiped box,
By arranging the cans 30 in a close-packed manner as shown in the plan view in FIG. 11 , spaces are created at the four corners. Therefore, by changing the arrangement in this way, the packaging box of the present invention can be applied to the packaging of canned beer and the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a packaging box according to an embodiment of the present invention viewed from above.

FIG. 2 is a perspective view of the same as seen from below.

FIG. 3 is a front view of the same.

FIG. 4 is a bottom view of the same.

FIG. 5 is a development view of the same.

FIG. 6 is a perspective view of a packaging box according to another embodiment of the present invention as seen from above.

FIG. 7 is a development view of the same.

FIG. 8 is a development view of a packaging box according to another embodiment of the present invention.

FIG. 9 is a development view of a packaging box according to still another embodiment of the present invention.

FIG. 10 is a development view of a packaging box according to still another embodiment of the present invention.

FIG. 11 is a layout view of contents showing a modified example of the present embodiment.

[Explanation of symbols]

 1; Packaging Box 2; Recessed Part 3; Bottom Part 4; Top Part 10; Front Part 11; Back Part 5, 6; Side Part 16, 17, 20, 21a, 21b, 21c; Fold Line 17a, 17b, 17c, 17d ; Broken line part

Front page continuation (72) Inventor Kanji Mogi, Fujisawa City, Kanagawa Prefecture, Miyamae character, back 1001 Kawasaki, Fuji Steel Works (72) Inventor ▲ Yanagi ▼ Sawa Masakatsu, Fujisawa City, Kanagawa Prefecture No. 100 No. 1 stock company Kobe Steel Works, Fujisawa Works

Claims (6)

[Claims] 1. A packaging box having substantially six sides has at least one concave portion provided at a corner where three ridge lines gather, and each concave portion connects the ridge lines to each other. A packaging box, which is formed by being bent inward by three folding lines. 2. The packaging box according to claim 1, wherein the recesses are provided in at least two corners of either the top surface or the bottom surface of the packaging box. 3. The packaging box according to claim 1, wherein the recesses are provided in at least two corners of the top surface and at least two corners of the bottom surface of the packaging box. 4. A packaging box having substantially six sides, wherein at least one corner where the three ridge lines gather has three fold lines that connect the ridge lines to each other. A packaging box, wherein the corners can be bent inward. 5. The packaging box according to claim 4, wherein the three folding lines are provided in at least two corners of either the top surface or the bottom surface of the packaging box. . 6. The packaging box according to claim 4, wherein the three folding lines are provided at least at two corners of the top surface of the packaging box and at least two corners of the bottom surface. box.