JP2000157110A - Tubular article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a durable and glossy tubular article, such as fishing rod, free from the peeling or release of the surface portion by forming the surface of a tubular article main body formed by winding a prepreg prepared by impregnating reinforcing fibers with a synthetic resin, in a mirror surface state having a specific roughness or less. SOLUTION: This tubular article is obtained by forming the surface of a tubular article main body, which is formed by winding a prepreg prepared by impregnating reinforcing fibers with a synthetic resin, in a mirror surface state having polished marks expressed by a central line average roughness (Ra) of <=0.04 μm, preferably <1 μm, preferably having the polished marks in the longitudinal direction. The tubular article is used as an tool for one of various sports, such as a shaft for a golf club, a stock for ski. It is preferable that a spiral projection or depression is formed on the surface of the tubular article main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body used as various sporting goods, such as a fishing rod, a golf club shaft, a ski pole, and the like.

[0002]

2. Description of the Related Art In many cases, the above-mentioned tubular body is formed by using a so-called prepreg obtained by impregnating a reinforcing fiber with a synthetic resin, and various methods have been proposed for finishing the surface. For example, Japanese Patent Application Laid-Open No. 9-1729
No. 12 discloses a technique in which, as a rod tube for a fishing rod, an interference thin film layer that develops color using light beam interference is directly laminated on a spiral uneven surface of a tube material. That is, as a final step of the pipe making, a thin interference film is directly formed on the tube material in a state where the tape wound in a spiral shape is peeled off without polishing, thereby improving the appearance and reducing the weight. ing.

[0003]

However, according to the above-mentioned technique, the release material, the dust and the like at the time of molding, which adhere to the molding tape for tightening the outside of the prepreg, are kept attached to the surface of the tube material. Since the interference thin film is laminated, there is a problem that the interference thin film is easily peeled off, the durability is inferior, and the appearance unevenness is apt to occur.

[0004] It is an object of the present invention to provide a tubular body having excellent durability without appearance or peeling of the surface portion and having excellent appearance quality.

[0005]

In order to achieve the above object, a tubular body of the present invention has a centerline average roughness formed by winding a prepreg in which reinforced fibers are impregnated with a synthetic resin. (Ra) It is characterized in that it is formed in a mirror surface of 0.04 μm or less.

[0006] The surface of the tubular body is made uneven by peeling off the molding tape, and this uneven surface is processed into a mirror surface having a center line average roughness (Ra) of 0.04 µm or less. By doing so, the appearance of the finally obtained tubular body can be improved, and attached dirt, dust and the like are removed. Therefore, in this state, the coating layer (protective layer)
Is formed, the peeling, color unevenness and the like are effectively prevented.

Further, the present invention is characterized in that the surface of the tubular body is formed into a mirror surface so that the polishing mark on the surface is less than 1 μm.

[0008] As described above, by polishing the mirror surface so that the depth of the polished eyes is smaller than 1 µm, the brilliance due to the reflection of light is increased, and the appearance is improved. It is a surface that leaves a polished eye that is almost unnoticeable.

Further, the present invention is characterized in that, when the surface is treated as a mirror surface as described above, the surface is polished in the axial direction. In this way, by polishing in the axial direction,
Polishing eyes after the treatment are not conspicuous, and the appearance can be improved.

[0010]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is a diagram showing a state before a firing step in forming a tubular body. The tubular body 1 is obtained by impregnating a thermosetting resin such as an epoxy resin or a thermoplastic resin fiber such as a polyamide into a reinforcing fiber bundle such as carbon fiber, alumina fiber, or aramid fiber or a woven fabric. The prepreg 1a is wound around the cored bar 10 and the tightening tape 20 is spirally wound therefrom via a release agent to stabilize the prepreg. Tape 20
Created by peeling off FIG. 2 shows a state in which the cored bar 10 is decentered. When the tubular body is used for a fishing rod, the inner layer side is formed by a prepreg in which reinforcing fibers are circumferentially aligned in a circumferential direction layer (not shown). ), The intermediate layer is constituted by an axial layer 2 formed by a prepreg in which reinforcing fibers are aligned in the axial direction, and the outer layer side is constituted by a circumferential layer 3 formed by a prepreg in which reinforcing fibers are aligned in the circumferential direction. You.

After the spirally wound tightening tape 20 is peeled off, uneven tape marks remain on the surface of the circumferential layer 3. That is, the convex portion 3a, the corner portion 3b, and the concave portion 3c
Are formed continuously in the axial direction.

After the tightening tape 20 is thus peeled off, the tubular body is polished so that its surface is mirror-finished, with the irregularities remaining. here,
The “mirror shape” means that the center line average roughness (Ra) defined by the JIS standard is processed to 0.04 μm or less. When the center line average roughness (Ra) is in the range of 0.03 to 0.04 μm in performing such polishing, the gloss becomes relatively low.
When the thickness is in the range of 0.02 μm, the gloss becomes high, and it is possible to obtain a brilliant appearance quality.

The means for polishing to the above-mentioned state can be realized mainly by polishing by a chemical polishing method, in particular, a chemical buff (CB) polishing method. The chemical buff (CB) polishing method and the sponge polishing method may be combined.

Here, the sponge polishing is performed by chemical
This is performed before buffing is performed, for example, 4 to 5 times with 1200 abrasives, and then 4 to 5 with 1500 abrasives.
It can be carried out by passing five times. The chemical buffing is a wet polishing method in which chemical polishing by a chemical action of a polishing aid and polishing utilizing physical polishing force are combined. In this chemical buffing method,
A non-woven fabric such as felt or hemp, a woven fabric, or a soft foam is impregnated with an appropriate amount of an abrasive as the elastic polishing member. The appropriate amount here is desirably 10 to 100 cc / min in consideration of economy, workability, polishing power, and the like. In the chemical buffing method, polishing is performed while rotating the object to be polished and the elastic polishing member. The number of rotations is 30 to 240 rotations / minute for the object to be polished and 350 to 1000 for the elastic polishing member. It is better to keep it at about rotation / minute.

By the way, after the tightening tape 20 is peeled off from the state shown in FIG. 1, the surface of the tubular body (the uneven surface) is
There is a case where dust and dirt such as fingerprints and silicon are attached. For this reason, before performing the above-mentioned chemical buffing, rough polishing is performed with a buff using abrasive grains equivalent to 2000 of JISR6001. Alternatively, besides this polishing, a liquid honing, JISR6001, which can mix a mixture of water and an abrasive with compressed air in a spray gun and collide against a surface before processing to perform polishing according to the surface shape.
Hand polishing using a paper or film-like abrasive using 2000 to 6000 abrasive grains, grinding stone polishing using a grinding stone such as alumina, silicon carbide, diamond, or CBN may be performed. In addition, if the center line average roughness (Ra) is processed to 0.04 μm or less by performing these polishing, the above-described chemical buff polishing may be omitted, or as described above. Polishing methods may be combined as appropriate.

The tubular body 1 after the above-mentioned polishing step is completed
3 and 4 are shown in FIGS.

The surface of the circumferential layer 3 is mirror-finished by the above-mentioned polishing step. In this case, the fastening tape 20
Uneven tape mark (uneven part) caused by peeling off
The corner 3b of FIG. 3 (see FIG. 2) is polished and finished in an R-shape as indicated by reference numeral 3b '. Further, as shown in FIG. 4, the reinforcing fibers 3e are partially exposed, and the polished surface thereof is mirror-finished flush with the matrix resin 3f. Items that cause poor adhesion, such as mold agents and dust, are removed,
When a film is formed on the surface, adhesion and durability can be improved. Furthermore, in the above-described configuration, since the polishing amount is reduced so as to leave the pitch of the tightening tape, a decrease in strength is prevented, the strength can be improved, the weight can be reduced, and the spiral unevenness is represented as an external pattern. be able to. Of course, the entire surface of the tubular body may be mirror-finished so as not to leave the pitch of the tightening tape. Also, an arbitrary outer shape can be formed by the shape of the outer die.

By the way, when performing the above-mentioned polishing,
As shown in FIG. 5, it is preferable to perform polishing along the axial direction. In this manner, by setting the polishing direction to the axial direction, the polishing marks (in the form of minute irregularities as shown by dotted lines) along the axial direction are polished by the polishing, and thus the reflection area of the tubular body generated in the longitudinal direction. Thus, even if irregular reflection occurs at the polishing mark, the polishing mark does not stand out, the surface becomes clean, and the appearance quality can be further improved. Of course, even when such polishing is performed, it is desirable that the center line average roughness (Ra) be 0.04 μm or less.

Alternatively, in addition to the above embodiment,
The polishing marks may be formed in a mirror-like shape so as to be less than 1 μm. In this way, by polishing the surface so that the depth of the polished eyes is smaller than 1 μm, the shininess due to the reflection of light is increased and the appearance is improved, and the surface is almost invisible or hardly noticeable by ordinary visual observation. Since the surface is left with a polished line to the extent that it does not become unnecessary, processing is easy, efficiency is improved, and cost reduction can be achieved. In addition, the depth of the polished line can also be measured by the height of the ruggedness when the polished line is formed on the uneven stripe.

As described above, the depth of the polished mesh is set to less than 1 μm, and preferably, it is set to less than 0.5 μm. By doing so, a beautiful appearance (mirror appearance) can be obtained as if there were no polished eyes visually.
In addition, if the polishing is performed so that the polishing eyes are completely eliminated, there is a relation with the polishing accuracy, and the cost is extremely increased. However, in consideration of the human visual accuracy and the illusion of the eyes due to the mirror-like light reflecting surface, an appropriate amount is considered. By leaving the polished eyes, a tubular body having an excellent appearance can be obtained economically.

Furthermore, when polishing marks are left in the axial direction, the fibers on the surface are preferably arranged in the circumferential direction. Thereby, since the polishing is performed in the direction orthogonal to the fiber, the depth of the polishing line at the time of polishing can be reduced. Also, regardless of the polishing direction, the fiber direction of the surface layer can be set to the axial direction,
It may be in the form of an inclined direction or a woven cloth. By making this surface layer visually recognizable, an external appearance as a pattern is obtained.

Next, an example of forming the coating 30 on the mirror-polished surface as described above will be described with reference to FIG.

The materials constituting the film include Ti, N
metals such as i, Cr, Al, Ag, Be, TiN, TiC
Alloys such as N, CrN, Fe—Cr—Ni, TiO ₂ ,
Ceramics such as SiC can be used. As described above, by using metal or ceramics as the material of the film 30, it is possible to impart brilliancy to the entire member and to improve the appearance. In this case, by setting the thickness of the coating to 3 μm or less, an excellent appearance with high glitter can be obtained.

It is preferable that a plurality of the above-mentioned coating layers are formed as follows. That is, a layer 30a made of a highly adhesive metal material such as Cr or Ni is formed on the inner layer side, and a layer 30b having excellent hardness and wear resistance such as TiO and SiC is formed on the outer layer side. It is preferable to set the following. Alternatively, on the inner layer side of the metal coating, 5 μm or less, preferably 3 to
It is preferable to form a 0.1 μm ultra-thin film 30c. Alternatively, it is preferable to form a transparent or translucent layer (protective layer) 30d of 10 μm or less, preferably 5 to 1 μm outside of the metal film using epoxy, urethane, or the like. And about formation of these coatings, it is possible to carry out in appropriate combination as needed,
The overall thickness of the coating 30 is 15 μm or less, preferably 1 μm.
It is preferably 0 μm or less, more preferably 5 μm or less.

By forming the above-mentioned coating, the adhesion of each coating layer can be improved, and at the same time, the decorative coating can be prevented from peeling, and the durability can be improved. In addition, the appearance can be improved, and the weight of the entire tubular body can be reduced by thinning such a coating.

As a method of forming the above-mentioned film,
Physical plating such as ion plating, sputtering, and vapor deposition, dry plating such as chemical vapor deposition and vacuum deposition, and wet plating can be used. Or,
Regarding the formation of the coating, in addition to the above, metal pieces such as gold, silver, copper, aluminum, chromium, cobalt, nickel, iron, zinc, or the like, or particles such as pigments alone, or any combination thereof, Can be mixed with a small amount of synthetic resin, diluted with a large amount of solvent, sprayed with a gun spray coating or the like, and then the solvent can be removed (volatilized). in this case,
By changing the ratio of the solvent to the synthetic resin, the amount of volatilization changes and the film thickness can be adjusted.

In the structure described above, in the circumferential layer 3
When polishing the surface, the fiber 3e is exposed on the surface (see FIG. 4), but the ratio of the exposed fiber per unit area of the exposed fiber is 30% or more, preferably 50% or more, more preferably It is preferable to polish so as to be 55 to 85%. By polishing as described above, the surface hardness can be improved, and the metal film formed thereon can be hardly broken. Moreover, the coating is directly applied to the circumferential layer 3.
When a plurality of layers are formed, a material having a small potential difference with the circumferential layer 3 is preferably formed on the inner layer side. By doing so, corrosion can be prevented at the interface, and cracks and cracks can be effectively prevented. Further, as described above, the corner 3b of the tape mark becomes an R-shaped corner 3b 'by being polished, and the coating layer formed on such an R-shaped corner also has an R-shaped corner. Is preferable. With this configuration, when another object comes into contact, the object is received on the R surface, so that the coating 30 is less likely to peel off. Also, without forming a protective layer on the surface,
Even if a metal oxide layer or a ceramic oxide layer is formed, durability can be improved and corrosion can be prevented, and the same effect as that of the protective film can be obtained.

[0028]

As described above, according to the present invention, it is possible to obtain a durable appearance without peeling or peeling of the surface portion, and to obtain a glossy (brilliant) appearance. Become.

[Brief description of the drawings]

FIG. 1 is a view showing a state before a firing step in forming a tubular body.

FIG. 2 is a cross-sectional view of the tubular body in a state where a tightening tape has been removed after a firing step.

FIG. 3 is a view showing a state where the surface is polished in the state shown in FIG. 2;

FIG. 4 is an enlarged sectional view of a surface subjected to surface polishing.

FIG. 5 is a diagram showing a surface of a tubular body when a polishing direction is set to an axial length direction.

FIG. 6 is a sectional view showing a state in which a film is formed on the polished surface as shown in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... tubular body, 1a ... prepreg, 2 ... axial layer, 3 ... circumferential layer, 3e ... reinforcing fiber, 3f ... matrix resin, 1
0: core metal, 20: tightening tape.

Claims (6)

[Claims] 1. A tubular body characterized in that a surface of a tubular body having a reinforcing fiber impregnated with a synthetic resin wound thereon is formed into a mirror surface having a center line average roughness (Ra) of 0.04 μm or less. body. 2. A tubular body wherein a surface of a tubular body formed by winding a prepreg in which a reinforcing fiber is impregnated with a synthetic resin is formed into a mirror surface having polishing marks of less than 1 μm. 3. A tubular body characterized in that the surface of a tubular body having a reinforcing fiber impregnated with a synthetic resin wound thereon is formed into a mirror surface having polishing marks in the axial direction. 4. The surface of the tubular body main body is such that the circumferential reinforcing fibers of the prepreg constituting the outermost layer are partially exposed, and the exposed reinforcing fibers and the matrix resin surface are formed in a smooth surface. Item 4. The tubular body according to any one of Items 1 to 3. 5. The tubular body according to claim 1, wherein the surface of the tubular body is provided with a spiral uneven portion.
A tubular body according to claim 1. 6. The tubular body according to claim 1, wherein a metal coating of 3 μm or less is formed on the mirror-finished surface of the tubular body.