JP2000118875A - Corrugated board drum for light wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a take-up drum which is easily manufactured and reused, and does not discharge toxic gas during burning, by forming a circular recessed part whose diameter is corresponding to the outer shape of a cylindrical body in the inside central portion of a pair of blades made of a corrugated board laminated board, and by adhering both ends of the cylindrical body to the circular recessed part in an engagement state. SOLUTION: Recessed parts 13, 13 corresponding to the outer shape of an end of a cylindrical body 2 are previously provided on the inside surfaces of a pair of blades 1, 1 formed from a corrugated board laminated board 3, and the end of the cylindrical body 2 is engaged and fixed to the recessed parts 13, 13 through coated adhesive. All of contact surfaces of the end of the cylindrical body 2 with the recessed parts 13, that are, the outer peripheral surface 14 of the disks of the both ends constituting the cylindrical body 2, an outer end 15 of a corrugated board 8 for revolute, and an outer end engaging portion 16 of the cylindrical body 2 are coated with adhesive, and are directly adhered and fixed to the recessed parts 13. Thus, this drum can be inexpensively manufactured, and sorting work is not required even for reuse. Because the drum does not discharge pollutant such as toxic exhaust gas in burning, it is suitable for environmental protection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated cardboard drum for winding a relatively lightweight wire rod for a lightweight wire rod.

[0002]

2. Description of the Related Art Conventionally, there are iron, wooden, wooden and a combination of wooden and corrugated cardboard, and further, a paper drum is used for a cylindrical body of a winding drum, but each has advantages and disadvantages. For example, a paper drum that uses a paper tube for the cylindrical body of the winding drum has excellent strength as a paper material, but a large amount of synthetic adhesive is used for the paper tube itself. Due to the generation of poisonous gas, it has recently been considered undesirable from the viewpoint of protection of the global environment. In addition, there is a problem that the price is expensive.

[0003]

However, as a drum for winding a relatively lightweight wire such as an optical fiber or a coated electric wire, the winding drum itself is also lightweight.
In addition, there is a demand for a material which is easy to manufacture and inexpensive and which can be easily incinerated at the time of disposal.

[0004] In order to meet the above demand, there is provided a winding drum which is inexpensive, simple to manufacture, easy to reuse, and does not emit toxic exhaust gas during incineration. .

[0005]

In order to achieve the above object, in a winding drum for a relatively lightweight wire such as an optical fiber or a covered electric wire, the circular blades constituting the winding drum are made of a corrugated cardboard laminate. The cylindrical body that is formed and further constitutes the winding drum is formed by winding a single-sided cardboard for outer winding a plurality of times around the entire length of the cylindrical core around the cylindrical core of a fixed length, A circular recess having a diameter corresponding to the outer shape of the cylindrical body is formed in the center of the inside of a pair of blades made of a corrugated cardboard laminate, and both ends of the cylindrical body are bonded to the circular recess in a fitted state.

In the cylindrical body, a plurality of discs made of corrugated cardboard are arranged at regular intervals, and a flat reinforcing rod made of corrugated cardboard is fixed around the plurality of discs in a penetrating state.

Further, in the cylindrical body, a plurality of discs made of corrugated cardboard are arranged at regular intervals, and a reinforcing rod made of corrugated cardboard with a U-shaped cross section is fixed in a penetrating state around the plurality of discs.

Further, the single-sided corrugated cardboard for outer winding is fixed with an adhesive for each layer with the angled liner inside.

[0009]

Embodiments of the present invention will be described with reference to the drawings. The winding drum a for the wire rod mainly includes the blade 1
And a cylindrical body 2 called "Taiko". In the present invention, the blade 1 is formed of a corrugated cardboard laminate composed of a plurality of cardboards.

[0010]

Embodiment 1 Cylindrical body 2 constituting winding drum a
Is an appropriate number of cardboard disks 3, 3, 3,. . Are arranged at predetermined intervals, concave portions 4 are provided on the outer peripheral portion of each disk 3 at a plurality of positions in the same line, and the cut concave portions 6 of the corrugated cardboard straight plate-shaped reinforcing rod 5 are fitted into each concave portion 4. I have. Notches 4 are formed in a plurality of selected places of the disk 3 constituting the cylindrical body 2. Disk 3,3,3. . Insertion part 7 provided on the outer peripheral part of
Inner end 9 of outer winding corrugated cardboard 8 made of single-sided corrugated cardboard
And the single-sided corrugated cardboard, which is the outer-wound corrugated cardboard 8, is wound a plurality of times sequentially while applying the adhesive 10 to each layer of the single-sided corrugated cardboard.
Is formed. This cylindrical body 2 is a so-called "Taiko"
It is called. When the outer winding cardboard 8 is wound, cardboard (not shown) may be wound appropriately.

As described above, the outer-wound corrugated cardboard 8 has a mountain-shaped liner on one side only on one side (hereinafter, referred to as “cardboard”).
Single-sided cardboard) is used. When this outer winding corrugated cardboard 8 is wound around the cylindrical core 6, the angled liner 11
Must be wound with the bottom facing. Further, the lower surface liner portion 11 of the outer end portion 12 of the outer corrugated cardboard 8 is compressed and made flat, and is adhered and fixed to the upper surface of the upper layer outer corrugated cardboard 8 at this position.

On the inner surfaces of the pair of blades 1, 1 formed by the corrugated cardboard laminate 3, recesses 13, 13 corresponding to the outer shape of the end of the cylindrical drum 2 are provided in advance. The ends of the cylindrical body 2 are fitted and fixed to 13 and 13 by applying an adhesive. All of the contact surfaces between the recess 13 and the end of the cylindrical drum 2, that is, the outer peripheral surface 14 of the disk at both ends constituting the cylindrical body 2, the outer end 15 of the outer winding corrugated cardboard 8, and the outer end fitting of the cylindrical body 2 The adhesive is applied to the portion 16 to form the recess 1
3 and is directly adhered and fixed.

[0013]

[Embodiment 2] As shown in FIGS. 7 to 9, the cylindrical core 36 has disks 33, 33, 33. . , Radial insertion recesses 34, 34, 34, 34,. Is formed. Each radial insertion recess 34, 34, 34,. Are inserted end portions 37, 37 of a plurality of reinforcing rods 35 made of cardboard and having a U-shaped cross section.
Are fitted and fixed, and the outer wound corrugated cardboard 32 is wound around the outer periphery of the cylindrical core 36 several times to form the circular body 3.
1 is formed.

According to the first aspect of the present invention, in the winding drum for a relatively lightweight wire such as an optical fiber or a covered electric wire, the circular blades constituting the winding drum are formed of a corrugated cardboard laminate. Further, the cylindrical body constituting the winding drum is formed by winding a single-sided corrugated cardboard for outer winding a plurality of times around the entire length of the cylindrical core around the outer periphery of the cylindrical core having a fixed length, and A circular concave portion having a diameter corresponding to the outer shape of the cylindrical body is formed at the center of the inside of the pair of blades, and both ends of the cylindrical body are bonded to the circular concave portion in a fitted state. All parts that make up the take-up drum are made of corrugated cardboard, so they can be manufactured at very low cost.Because the inside of the cylindrical body is reinforced from the inside with a tube core, it can be used as an optical fiber or coated wire. And has a sufficient strength as a winding drum Do relatively light wire. Further, since the whole is made of corrugated cardboard, there is no necessity of sorting work when reusing. In addition, harmful substances such as toxic exhaust gas are not emitted during incineration, so that the present invention is adapted to recent environmental protection. Further, in the cardboard drum for a lightweight wire according to the second aspect, the cylindrical body has a plurality of discs made of corrugated cardboard arranged at regular intervals, and a flat reinforcing rod made of corrugated cardboard is fixed in a penetrating state around the plurality of discs. By doing so, a corrugated cardboard drum for a lightweight wire with good workability can be manufactured. Further, in the corrugated cardboard drum for lightweight wire according to claim 3,
For a lightweight wire rod with more strength, a cylindrical body is provided with a plurality of cardboard disks arranged at regular intervals, and a corrugated cardboard-shaped U-shaped reinforcing rod is fixed to the outer periphery of the plurality of disks in a penetrating state. A cardboard drum can be made. Further, in the cardboard drum for a lightweight wire according to the fourth aspect, the surface of the cylindrical body can be smoothed by fixing the single-sided corrugated cardboard for outer winding with an adhesive for each layer with the angled liner inside. There is an effect that winding of a relatively lightweight wire such as an optical fiber or a coated electric wire becomes easy.

[Brief description of the drawings]

FIG. 1 is a sectional view of a cardboard drum for a lightweight wire rod.

FIG. 2 is a perspective view of a tube core.

FIG. 3 is a cross-sectional view of FIG. 1A-A.

FIG. 4 is an enlarged sectional view of a cylindrical body.

FIG. 5 is an enlarged sectional view showing a wound state of a single-sided cardboard.

FIG. 6 is a perspective view of a cylindrical body.

FIG. 7 is a cross-sectional view of a cardboard drum for a lightweight wire showing another embodiment.

FIG. 8 is a sectional view taken along the line 7B-B of FIG.

FIG. 9 is a perspective view of a cylindrical core used in FIGS. 7 and 8;

[Explanation of symbols]

 1. . . Feather 2. . . 2. cylindrical body . . Disk 4. . . Recess 5. . . Reinforcing rod 6. . . Tube core 7. . . 7. Insertion section . . 8. Corrugated cardboard for external winding . . Inner end 10. . Adhesive 11. . Yamagata liner section 12. . Outer end 13. . Recess 14. . 14. Outer peripheral surface of disk . Outer end 16. . Fitting part 31. . Circular body 32. . Externally wound cardboard 33. . Disk 34. . Recess 35. . U-shaped reinforcing rod 36. . Tube core 37. . Plug end a. . Winding drum

Claims (4)

[Claims] 1. A winding drum for a relatively lightweight wire such as an optical fiber or a covered electric wire, wherein the circular blades constituting the winding drum are formed of a corrugated cardboard laminate, and further a cylindrical body constituting the winding drum. Is formed by winding a single-sided corrugated cardboard for outer winding a plurality of times around the entire length of the cylindrical core on the outer circumference of the cylindrical core having a fixed length, and a cylindrical member is formed at a central portion inside a pair of blades made of the corrugated cardboard laminate. A corrugated drum for lightweight wire rods, wherein a circular concave portion having a diameter corresponding to the outer shape of the body is formed, and both ends of the cylindrical body are bonded to the circular concave portion in a fitted state. 2. A cylindrical body, wherein a plurality of corrugated boards are arranged at regular intervals, and a flat reinforcing rod made of corrugated boards is fixed to the outer periphery of the plurality of discs in a penetrating state. 2. The corrugated cardboard drum for a lightweight wire according to 1. 3. The cylindrical body is characterized in that a plurality of discs made of corrugated cardboard are arranged at regular intervals, and a reinforcing rod having a U-shaped cross section made of corrugated cardboard is fixed to the outer periphery of the plurality of discs in a penetrating state. The cardboard drum for a lightweight wire according to claim 1. 4. The single-sided corrugated cardboard for external winding is fixed with an adhesive for each layer with the angled liner inside.
A corrugated cardboard drum for the lightweight wire described.