JP2001146365A - Bobbin attachable attachment and bobbin for installing ' it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wind a tape-like linear body without collapsing a layer without reducing a winding quantity when winding a cross-sectional round linear body on a bobbin for respectively fixing disk-like collar parts to both ends of a cylindrical barrel part. SOLUTION: A bobbin attachable attachment 3 having a taper surface 3b having a diameter expanding toward an inside surface lb of collar parts from a surface of a barrel part 2 is detachably installed in the corner between a surface of the bobbin barrel part 2 having a cylindrical barrel part 2 and two disk-like collar parts 1 fixed to both ends and the inside surface 1b of the collar parts 1 by using a double coated pressure sensitive adhesive when necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable type applicable to a bobbin used for winding both a tape-shaped linear member such as a tape-shaped optical fiber core wire and a linear member having a round cross section. The present invention relates to an attachment and a bobbin to which the attachment is attached.

[0002]

2. Description of the Related Art Wires such as optical fibers and insulated wires are usually wound around bobbins for storage and transportation. The bobbin may be referred to by a name such as a reel, a drum, a spool, and a bobbin. FIG. 4 is a view showing an example of a bobbin, FIG. 4 (A) is a perspective view, and FIG. 4 (B) is a front view.
In FIG. 4, 11 is a flange, 11a is a shaft hole, and 12 is a trunk. The flange portion 11 is a two disk-shaped object, and has a shaft hole 11a at the center. The body 12 is a cylindrical object, and the flanges 11 are fixed to both ends thereof.

In winding the linear body around the bobbin, the rotary body is passed through a shaft hole 11a of the bobbin to rotate the bobbin, and the linear body is wound from another device to the body 12 of the bobbin.
Guide around and wind around. FIG. 5 is a cross-sectional view of one side of the shaft when the linear bodies 13 are aligned and wound around the body 12 of the bobbin.

The above-mentioned linear body has a round cross section, but there is also a linear body having a cross section other than a round shape.
FIG. 6 is a perspective view of a tape-shaped linear body called a tape-shaped optical fiber core or a tape core. In FIG. 6, reference numeral 14 denotes an optical fiber, 15 denotes a collective coating, and 16 denotes a tape core. The optical fiber 14 is a glass fiber provided with a resin coating. A plurality of such optical fibers 14 are arranged in parallel, and a collective coating 15 made of an ultraviolet curable resin is applied around the optical fiber 14 to form a tape core 16. This tape core wire is mainly used as a main member of an optical fiber cable, and its size has a thickness T of 0.3 mm to 0.4 mm.
mm and a width W of about 1.0 mm to 3.5 mm.

[0005]

The above-described tape core wire is also wound around a bobbin similar to the bobbin shown in FIG.
Transport is performed. FIG. 7 is a cross-sectional view of a part of the core wire wound around the bobbin. In FIG.
Numeral 11 denotes a flange portion, 12 denotes a trunk portion, and 16 and 16 ′ denote tape cores. As in the case shown in FIG. 5, in which a linear body having a round cross section is wound, the winding width of each layer is the same, and the tape is brought into contact with the inner surface of the flange 11 so as to be aligned. In some cases, the core 16 'may be bent in the width direction as shown in FIG. When this occurs, the optical fiber inside the tape core 16 'receives a lateral pressure, and the transmission characteristics of the optical fiber deteriorate.

In order to avoid this, when winding the tape core wire around the bobbin, as shown in FIG. 7 (A), the winding width of each layer is reduced in the upward direction, that is, in a so-called bale-stacked state. In this case, there is little danger of bending in the width direction of the tape core wire as shown in FIG.
If the wrapping is loose, the upper layer may shift during transportation and fall between the bales and the flange.

Recently, bobbins having a shape in which the body diameter of the body portion is increased toward the inner surface side of the flange portion at a corner portion between the surface of the body portion and the inner surface of the flange portion are commercially available. FIG. 8 is a partial cross-sectional view showing a state where a tape core wire is wound around the bobbin, where 17 is a trunk portion and 17a is a tapered portion.
In the case of this bobbin, as shown in FIG. 8, the tape core wires 16 of each layer are not in contact with the inner surface of the flange portion 11, and
7 is wound so as to be in contact with the tapered portion 17a at the end and to be sequentially aligned along the slope of the tapered portion 17a. At this time, the positions of the tape cores 16 of the respective layers are slightly shifted, so that the tape cores 16 can be wound in a reverse bale stack. Therefore, even if it is loosely wound, layer collapse does not occur as in the case of bale stacking as shown in FIG.

On the other hand, when a linear body having a round cross section is wound around the bobbin shown in FIG. 8, the linear body cannot be wound around a portion corresponding to the inside of the tapered portion. If the size of the wire is the same, the length of the linear body that can be wound becomes short. Therefore, the bobbin around which the round striatum is wound,
8 is not economical. In addition, many bobbins having the shape shown in FIG. 4 are already held in the factory, and it is economically problematic to use two types of bobbins of the type shown in FIG. 4 and the type shown in FIG.

The present invention uses a bobbin having a normal shape as shown in FIG. 4 to form a tape as shown in FIG. The present invention provides a detachable attachment for a bobbin, which can be used as the bobbin, and a bobbin to which the bobbin is attached.

[0010]

SUMMARY OF THE INVENTION A detachable attachment for a bobbin according to the present invention is a bobbin having a cylindrical body and two disc-shaped flanges fixed to both ends thereof, the surface of the body and the flange. And has a tapered surface whose diameter increases from the surface of the body toward the inner surface of the flange.

A bobbin in which the detachable attachment for a bobbin is attached to a corner between the surface of the body and the inner surface of the flange can be wound with a tape-shaped linear body such as a tape core wire in an inverted bale-stacking form. Therefore, even if the winding width is full so as to be in contact with the tapered portion, the tape core wire does not bend in the width direction. Therefore, the transmission characteristics of the optical fiber included in the tape core can be well protected. In addition, since the bales are stacked in reverse, the linear body does not collapse during transportation. In addition, if the detachable attachment for bobbin is removed, the round linear body with a cross section can be wound as wide as possible until it comes into contact with the inner surface of the flange, so the winding amount when winding the round linear body Does not decrease.

[0012]

1 (A) and 1 (B) are views showing an embodiment of a detachable attachment for a bobbin according to the present invention, and FIG. 1 (A) is a side view and a plan view thereof. (B) is a perspective view when it is divided into two parts. FIG.
(C) is a longitudinal sectional view when the detachable attachment for the bobbin is attached to the bobbin. In FIG. 1, 1 is a collar,
1a is a shaft hole, 1b is an inner surface of a flange portion, 2 is a trunk portion, 3 is a detachable attachment for a bobbin, 3a is a divided portion, 3b is a tapered portion, 4 is an engaging portion, 4a is a convex portion, and 4b is a concave portion. is there.

The detachable attachment 3 for a bobbin is a truncated cone-shaped object having a hole with a circular cross section at the center, and has a tapered portion 3b on the surface, and can be divided into two by a dividing portion 3a. is there. In addition, the taper angle of the tapered portion 3b with respect to the axial direction is set to 20 ° to 80 °. Further, in order to make the divided parts face each other and engage with the divided parts 3a,
The engaging portion 4 is provided from the convex portion 4a and the concave portion 4b into which the convex portion 4a is inserted. The detachable attachment 3 for a bobbin is formed of a plastic such as an ABS (acrylonitrile-butadiene-styrene) resin or a styrene foam resin.

This bobbin detachable attachment 3 is
As shown in FIG. 1 (C), the engaging part 4 is fitted on the body 2 of the bobbin with the divided parts 3a facing each other, and is fixed at a position in contact with the inner surface 1b of the flange part 1. FIG. 2 is a plan view illustrating an example of the fixing method, and reference numeral 5 denotes a double-sided adhesive. Inner surface 1b of flange of detachable attachment 3 for bobbin
Affixes double-sided adhesive material 5 to a plurality of places on the plane in contact with
The surface is pressed against the inner surface 1b of the flange 1 to fix the bobbin detachable attachment 3 to the inner surface 1b of the flange.

Also, a thin metal plate or the like is inserted between the detachable attachment for bobbin 3 and the inner surface 1b of the flange to peel off the double-sided adhesive, and then the engaging portion 4 is detached. The attachment can be easily removed. Further, the place where the double-sided adhesive is applied is the surface that comes into contact with the inner surface 1b of the flange of the detachable attachment 3 for the bobbin, but may be the surface that comes into contact with the trunk 2. In addition, the example of fixing the detachable attachment for the bobbin to the bobbin by using a double-sided adhesive has been described. However, the present invention is not limited to this, and it can be easily fixed and detached, and a protrusion that interferes with the linear body is obstructed. Other methods may be used as long as they do not have an object.

The detachable bobbin attachment of the present invention can be attached to a bobbin made of metal or plastic such as ABS resin. The detachable attachment for a bobbin of the present invention can also be attached to and detached from a bobbin in which a cushion material is wound around the body of the bobbin to improve the protection of the linear body wound around the bobbin.
Further, in the example of FIG. 1, the example in which the detachable attachment for the bobbin is divided into two is shown, but the attachment may be divided into three or more. The example of FIG. 1 shows an example of an object having a solid interior with a triangular cross section in the circumferential direction of the detachable attachment for bobbin. However, if the attachment has a tapered portion and can be easily fixed to the bobbin, the interior is It can be hollow.

FIG. 3 is a longitudinal sectional view of an embodiment in which a detachable attachment for a bobbin is mounted on a known divided bobbin capable of dividing a trunk, and the same reference numerals as those in FIG. 1 denote the same parts. In FIG. 3, 1c is a tightening bolt operation hole, 2a
Is the split part of the trunk, 6 is the tightening bolt, 7 is the shaft hole pipe,
7a is a divided portion of the shaft hole pipe, and 8 is a fastening plate. The bobbin shown in FIG. 3 is capable of dividing the body 2 into two parts in the axial direction by a dividing part 2a, and one flange part 1 is fixed to each part.

Further, the shaft hole pipe 7 fixed to the shaft hole 1a of the flange portion 1 can also be divided into two by the dividing portion 7a, and the space between the shaft hole pipe 7 and the body portion 2 is disc-shaped. Respectively. Then, the body part 2 and the shaft hole pipe 7 which are divided into two parts are opposed to each other, and a hand is inserted through the tightening bolt operation hole 1c to tighten the respective tightening plates 8 through the tightening bolts, thereby assembling as an integral bobbin. I can do it.

This split-type bobbin is capable of removing the remaining wire without unwinding the remaining wire by removing the tightening bolt and dividing the bobbin even if there is a remaining wire wound around the body. Since it can be carried out, it is useful as a bobbin for winding a long linear body. When attaching the detachable bobbin attachment 3 of the present invention to the split-type bobbin, the detachable bobbin attachment can be fitted on the body of the bobbin in a state where the bobbin is divided. It is not necessary to divide the two in the unit 3b. For the split-type bobbin, an attachable / detachable attachment for a bobbin in the shape of an integral truncated cone having a hole through which the body 2 can pass can be used. Also in this case, the method shown in FIG. 2 can be used for fixing the bobbin detachable attachment to the bobbin.

[0020]

The detachable attachment for a bobbin according to the present invention has a tapered surface whose diameter increases from the surface of the body of the bobbin toward the inner surface of the flange, and is detachable.
A tape-like linear body such as a tape core wire can be wound around the bobbin to which it is attached in an inverted bale-stacking form. Even if the winding width is full so as to be in contact with the tapered portion, the tape core will not bend in the width direction, and the transmission characteristics of the optical fiber included in the tape core can be well protected. Further, since the winding method is the reverse bale stacking type, the linear body does not collapse during transportation. In addition, if the detachable attachment for bobbin is removed, the round linear body with a cross section can be wound as wide as possible until it comes into contact with the inner surface of the flange, so the winding amount when winding the round linear body Does not decrease.

A bobbin detachable attachment is formed into a truncated conical shape having a circular cross-section centered on a bobbin, and is divided into two in the circumferential direction so that it can be joined and separated by an engaging portion. It can be easily fitted, can be easily fixed to the bobbin with a double-sided adhesive or the like, and can be easily removed. Further, depending on whether the linear body wound around the bobbin is a tape core or a round linear body, the detachable attachment for the bobbin can be immediately attached to or removed from the bobbin.

[Brief description of the drawings]

1A and 1B are views showing an embodiment of a detachable attachment for a bobbin of the present invention, wherein FIG. 1A is a side view and a plan view, and FIG. It is a perspective view at the time of dividing. (C) is a longitudinal sectional view when the detachable attachment for the bobbin of the present invention is attached to the bobbin.

FIG. 2 is a plan view illustrating an example of a method of fixing a detachable attachment for a bobbin according to the present invention.

FIG. 3 is a longitudinal sectional view showing an embodiment in which a detachable attachment for a bobbin of the present invention is attached to a split-type bobbin.

4A and 4B are diagrams illustrating an example of a bobbin, wherein FIG. 4A is a perspective view and FIG. 4B is a front view.

FIG. 5 is a sectional side view of one side of a shaft when a linear body is aligned and wound around a body of a bobbin.

FIG. 6 is a perspective view of a tape core.

FIGS. 7A and 7B are partial cross-sectional views showing a state in which a tape core wire is wound around a bobbin, wherein FIG. 7A is a view showing a normal way of winding a bale, and FIG. FIG.

FIG. 8 is a partial cross-sectional view showing a state where a tape core wire is wound in a reverse bale-stacked shape on a bobbin having a shape in which the trunk diameter of the trunk portion is increased toward the inner surface side of the flange portion.

[Explanation of symbols]

 1: Flange part 1a: Shaft hole 1b: Inner surface of flange part 1c: Tightening bolt operation hole 2: Trunk part 2a: Split part of trunk part 3: Detachable attachment for bobbin 3a: Dividing part 3b: Tapered part 4: Engagement Part 4a: Convex part 4b: Concave part 5: Double-sided adhesive material 6: Tightening bolt 7: Shaft hole pipe 7a: Split part of shaft hole pipe 8: Tightening plate

Claims (3)

[Claims] 1. A bobbin having a cylindrical body and two disc-shaped flanges fixed to both ends thereof is detachably attached to a corner between a surface of the body and an inner surface of the flange. A detachable attachment for a bobbin, which has a tapered surface whose diameter increases from the surface of the body to the inner surface of the flange. 2. The detachable attachment for a bobbin according to claim 1, wherein the detachable attachment can be divided into two or more in a circumferential direction. 3. A bobbin having a cylindrical body and two disc-shaped flanges fixed to both ends thereof, at a corner between the surface of the body and the inner surface of the flange, the surface of the body. A bobbin with a detachable attachment, wherein a detachable attachment for a bobbin having a tapered surface whose diameter increases toward the inner surface of the flange portion is detachably attached.