JPH0348876Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a protective outer packaging for use in shipping, transporting and storing graphite electrodes for steel manufacturing.

[Conventional technology]

Recently, in order to improve the efficiency of electrode connection work at steel-making reactor operation sites and to realize an appropriate connection structure, electrode manufacturers have begun connecting the half length of nipple 1 to one side of graphite electrode 2, as shown in Figure 3. Increasingly, electrodes are being shipped to customers in the form of a connection in a socket (hereinafter referred to as a "preset electrode").

The preset electrode has a half-length nipple with a fragile threaded part exposed, so if it is shipped, transported, or stored as is, the thread may be damaged or damaged.
Various factors, such as the adhesion of dust, may occur that impair normal connection. Therefore, a protective outer packaging is required to package the preset portion.

Conventionally, the protective exterior of the preset electrode has been packaged in such a way that the preset portion is covered with a thick paper material such as cardboard or paperboard. Packaging part and presser piece 5 and flap piece 6 in Fig. 5
Using two members, each consisting of an electrode enveloping portion cut out from the above, it is assembled and packed in the state shown in FIG. In FIG. 6, 1 is a nipple, 2 is an electrode, 7 is a nipple covering part formed by folding and folding back the center piece 3 and the inclined piece 4, and 8 is a presser piece 5 which is overlapped with the folded end of the inclined piece 4. With the flap piece 6
An electrode covering portion is formed by bending the electrode around the electrode circumferential surface, and 9 is a fixing device such as a band iron or an adhesive tape.

[Problem that the invention attempts to solve]

The conventional protective sheath for preset electrodes is composed of two parts, the nipple enveloping part 7 and the electrode encasing part 8, as described above, so it takes two parts to cut out a cardboard die-cut of a complicated shape.
Furthermore, there is a problem in that it requires fixing means such as gluing or tape adhesion at the abutting or overlapping portions when assembling at the time of packaging. Moreover,
A gap inevitably occurs between the mating parts of each inclined piece 4,
The problem of dust entering from there was unavoidable.

[Means for solving problems]

This invention provides a protective exterior for graphite electrodes that solves the above-mentioned problems, and its features are that it is made of a cardboard material such as cardboard or paperboard, and has a center piece 3 in the shape of an equilateral polygon in the center; It consists of an inclined piece 4 having an overlap margin extending radially from each side of the center piece via the fold line, and a flap piece 6 connected to the inclined piece via the fold line.

[Effect]

The protective sheath according to this invention has a center piece 3, an inclined piece 4, and a flap piece 6 that are integrally formed, and by a simple bending operation, each side of the center piece 3 that comes into contact with the end face of the exposed nipple can be directly A plurality of inclined pieces 4 form a substantially truncated pyramid shape to form a covering state up to the peripheral edge of the electrode, and are fixed to the circumferential surface of the electrode end via flap pieces 6. Therefore, a space is formed between the threaded surface of the nipple and the inner surface of the inclined piece after assembly and packaging.

〔Example〕

This invention will be explained below based on illustrated embodiments.

FIG. 1 shows a developed view of the protective exterior of this invention, where 3 is a regular hexagonal central piece formed in the center, and 4 extends radially from each side of the central piece 3 via fold lines 10. This is a sloped piece. It is desirable that the inclined piece 4 is provided with a center fold line 11. Each inclined piece 4 is provided with an overlap margin 12 that is folded into the back surface of the adjacent inclined piece during assembly. 6 is a flap piece that is connected to the inclined piece 4 via the fold line 13.

The center piece 3 located in the center is not limited to a regular hexagon, but can be configured in various equilateral polygon shapes,
It is desirable that the shape be at least pentagonal or larger. In this case, the inclined piece 4 and the flap piece 6 are
Increase or decrease depending on the number of sides.

The above-mentioned protective sheath is integrally formed by cutting out a cardboard material such as corrugated cardboard or paperboard according to the shape and dimensions of the preset electrode.

When packing, first, each inclined piece 4 is folded from the fold line 10 of the center piece 3, and the overlapping margin 12 is folded into the back side of the adjacent inclined piece. In this state, the center piece 3 is brought into contact with the end face of the nipple, and the flap part 6 is bent along the fold line 13 that coincides with the circumferential edge of the electrode, and is fixed to the circumferential surface of the electrode by appropriate means.

FIG. 2 shows the packaging form of the preset electrode assembled in this way.The center piece 3 and the inclined piece 4 form a substantially truncated pyramid shape and cover the exposed nipple part, and the flap piece 6 covers the electrode periphery. The edge portion is covered and secured by a fixing device 9, such as an adhesive tape.

[Effect of idea]

According to this invention, the following various practical effects are brought about.

(1) Since the protective sheath is constructed as a whole, manufacturing and packaging operations are significantly facilitated.

(2) When assembled and packed, the space formed between the nipple thread surface and the inner surface of the inclined piece functions to cushion external shocks, so damage to the threads is more effectively prevented.

(3) Since there is an overlapping margin 12 at the joint portion of the inclined pieces 4, this portion is strengthened and dust is prevented from entering.

[Brief explanation of the drawing]

FIG. 1 is an exploded view showing an embodiment of this invention, and FIG. 2 is a perspective view showing a packaging form using a protective exterior of this invention. FIG. 3 is a side view showing the state of the preset electrodes. Figures 4 and 5 are exploded views showing the protective exterior of the conventional structure;
The figure is a partially cutaway sectional view showing a packaging form using a conventional protective outer cover. 1... Nipple, 2... Electrode, 3... Center piece,
4... Inclined piece, 5... Presser piece, 6... Flap piece, 7... Nipple covering part, 8... Electrode covering part,
9...Fixing tool, 10, 11, 13...Fold line, 1
2... Overlap allowance.

Claims (1)

[Scope of utility model registration request] Constructed of cardboard material such as cardboard, cardboard, etc.
A center piece 3 having an equilateral polygonal shape in the center, a slanted piece 4 having an overlap margin extending radially from each side of the center piece via the fold line, and a slanted piece 4 connected to the slanted piece via the fold line. A protective sheath for the graphite electrode, consisting of a flap piece 6 with a flap.