JP2002204636A - Method for producing rod body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a rod body capable of smoothly applying a coating even to the interior of the rod body. SOLUTION: This method for producing the rod body comprises a step of helically winding a tapelike haze film around a core material, a step of winding a prepreg on the outer periphery of the haze film, a step of baking the resultant material, then pulling out the core material, peeling the haze film from the prepreg and forming the rod body and a step of applying a coating to the inner peripheral surface of the rod body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a rod constituting a fishing rod.

[0002]

2. Description of the Related Art Conventionally, a tapered cylindrical rod body constituting a fishing rod is made of a fiber reinforced resin called a prepreg in which a reinforcing fiber such as carbon fiber or glass fiber is impregnated with a synthetic resin. Such a rod body is subjected to a surface treatment on the outer peripheral surface side, and a necessary paint is applied to the inner peripheral surface side for surface treatment. In particular, in a rod body constituting a through rod in which a fishing line passes through the rod body, such surface treatment on the inner peripheral surface side is important. Therefore, conventionally, the rod body formed in a paint tank is immersed, and the paint is also sent to the peripheral surface of the rod body with a small diameter by a method such as pouring the paint into the rod body to perform surface treatment on the peripheral surface of the rod body.

[0003]

Even if the paint is simply fed to the inner peripheral surface of the rod body and subjected to surface treatment on the inner peripheral surface side of the rod body, the paint may not sufficiently adhere to the inner peripheral surface of the rod body. For this reason, it is preferable to perform a process such as roughening the inner peripheral surface by brushing as a pre-process for applying the paint to the inner peripheral surface of the rod body. However, it is difficult to apply a treatment such as brushing to the peripheral surface of the formed small-diameter rod, and it is difficult to sufficiently bring the paint into close contact with the peripheral surface of the rod.

[0004] Also, when the paint is fed into the rod body having a small diameter, if the paint is poured into the rod body, the paint does not flow into the entire inner peripheral surface of the rod, and the paint may not be applied to the entire inner peripheral surface well. Further, even when the rod body molded in the paint tank is immersed, the intake air collected in the small-diameter rod body cannot be sufficiently removed, and the paint may not be applied to the entire inner peripheral surface.

[0005] An object of the present invention is to provide a method of manufacturing a rod body capable of smoothly applying paint even to a small-diameter rod body.

[0006]

A method of manufacturing a rod according to a first aspect of the present invention is a method of manufacturing a rod constituting a fishing rod,
A step of spirally winding a tape-shaped haze film around a core material, a step of winding a prepreg around an outer periphery of the haze film, and after firing these, the core material is pulled out and the haze film is peeled off from the prepreg to form a rod body. Forming a;
Applying a paint to the inner peripheral surface of the rod body.

In this method, a haze film is laminated on the innermost peripheral side of the prepreg constituting the rod body and fired, and then the tape-shaped haze film is peeled off while being sequentially pulled out from one end side of the rod body. Fine irregularities of the haze film are transferred to the peripheral surface of the rod body. By forming such unevenness, the paint applied to the inner peripheral surface of the rod body thereafter easily adheres to the inner peripheral surface of the rod body, and the paint can be smoothly applied to the inner peripheral surface of the small-diameter rod body.

[0008] The haze (HAZE) film used here is a film having an uneven surface such as a uniform network structure (crater structure) formed on the surface. For example, in the case of using a polypropylene material, the irregularities can be formed by utilizing the crystallization characteristics of the polypropylene. When such a haze film made of polypropylene is used, it is not necessary to separately apply a release material to the surface of the core material because of the releasability of polypropylene, and the core material can be easily pulled out.

A method according to a second aspect of the present invention is the method according to the first aspect, wherein one end of the rod is inserted into a paint tank, the paint is sucked from the other end and pumped up, and the paint is applied to the inner peripheral surface of the rod. By using the rod thus formed like a straw and pumping paint from the paint tank from one end of the rod, it is possible to spread the paint over the entire inner peripheral surface of a small-diameter rod. Thus, it is possible to apply the paint evenly on the entire peripheral surface of the rod body.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A rod body 1 constituting a fishing rod employing one embodiment of the present invention is a tapered cylindrical member.
As shown in FIG. 1, a prepreg obtained by impregnating a reinforcing resin such as a carbon fiber or a glass fiber with a synthetic resin is laminated, and specifically, an inner layer 2 located on the peripheral surface side of the rod body. And a main layer 3 laminated on the outer peripheral side of the inner layer 2.

As shown in detail in FIG. 2, the inner layer 2 is composed of a prepreg in which reinforcing fibers are aligned in a circumferential direction and oriented, and the main layer 3 is a prepreg in which reinforcing fibers are aligned in an axial direction and oriented. Consists of The inner layer 2 is laminated about one round, and the main layer 3 is laminated several times as necessary. Further, paints S1 and S2 required for surface treatment are applied to the inner peripheral surface side and the outer peripheral surface of the rod body 1 thus configured, respectively. In particular, in the rod body 1 for the through-hole rod, a fishing line support projection for supporting a fishing line inserted through the rod body 1 may be formed on the inner peripheral surface of the rod body 1.

Each of the drawings schematically shows a state in which prepregs are stacked, and in practice, the prepregs are integrated by firing. This rod is manufactured as follows.

As shown in FIG. 3, first, a mandrel (core material) 100 having a tapered taper is prepared, and a haze tape 10 obtained by processing a haze film into a tape shape is provided on the mandrel 100 in a spiral manner in the axial direction. Wound without.
The Hazef film is, for example, a polypropylene film having fine crater-like irregularities formed on the surface by utilizing the crystal characteristics of the polypropylene.

A sheet-like first prepreg 11 (which forms the inner layer 2) in which reinforcing fibers are oriented in the circumferential direction of the mandrel 100 is wound around the outer periphery thereof while applying pressure. By winding the first prepreg 11 around the outer periphery of the haze tape 10 while applying pressure in this manner, the first prepreg 11
The unevenness of the surface of the haze tape 10 is transferred to the inner peripheral surface side of the prepreg 11.

Subsequently, a sheet-like second prepreg 12 in which reinforcing fibers are oriented in the axial direction of the mandrel 100 on the outer periphery of the first prepreg 11 (the main layer 3 is formed).
While applying pressure. The second prepreg 12 may be wound by winding one kind several times as necessary.
In addition, several different types may be wound.

Thus, as shown in FIG.
The first prepreg 11 and the second prepreg 12 are wound around the haze tape 10 at the innermost position and the outer periphery thereof. Thereafter, if necessary, a protective tape is further spirally wound around the outer periphery, and these are fired in a furnace.

After firing, the mandrel 100 is pulled out and the protective tape / haze tape 10 is sequentially peeled off.
The rod body 1 in which fine irregularities are formed on the inner peripheral surface of the inner layer 2 to be constituted by the first prepreg 11 is formed. Then, a surface treatment such as polishing and application of a paint is performed on the outer surface side, and a paint is also applied to the inner peripheral surface to perform the surface treatment. Specifically, as shown in FIG. 5, one end of the molded rod body 1 is dipped into a paint tank, and the other end of the rod body 1 is drawn up like a straw, and the paint 50 is poured into the entire inner peripheral surface side. .

As described above, the haze tape 10 is wound around the innermost side of the prepreg constituting the rod body 1, fired in a laminated state, and then peeled off, so that the haze film of the haze film is formed on the inner peripheral surface of the rod body 1. Fine irregularities are transferred. By forming such irregularities, the paint 50 applied to the inner peripheral surface of the rod body 1 thereafter easily adheres to the inner peripheral surface of the rod body 1, and the paint 50 is smoothly applied to the inner peripheral surface of the rod body 1. Can be applied. Also,
If such a haze tape 10 made of polypropylene is used, it is not necessary to separately apply a release material to the surface of the mandrel 100 because of the releasability of polypropylene, and the mandrel 10 can be easily pulled out.

Furthermore, by using the rod body 1 like a straw to pump up the paint 50 of the paint tank from one end of the rod body 1, it becomes possible to spread the paint over the entire inner peripheral surface of the rod body 1. The paint 50 can be easily and evenly applied to the entire inner peripheral surface of the rod body 1.

[Other Embodiments] (a) The method of applying the paint 50 to the inner peripheral surface of the rod body 1 is not limited to the above embodiment, and a conventional method may be used. Even in this case, the coating can be sufficiently applied to the fine irregularities formed on the inner peripheral surface of the rod body 1.

[0021]

According to the method of the present invention, the paint can be easily applied to the inner peripheral surface of the rod body.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rod body employing an embodiment of the present invention.

FIG. 2 is an enlarged view of the rod body of FIG. 1;

FIG. 3 is a diagram showing a manufacturing process of a rod body employing one embodiment of the present invention.

FIG. 4 is a reference diagram of FIG. 3;

FIG. 5 is a diagram showing a state in which paint is sent to the inner peripheral surface of the rod.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rod body 2 Inner layer 3 Main layer 10 Haze tape 11 1st prepreg 12 2nd prepreg 50 Paint 100 Mandrel

Claims (2)

[Claims] 1. A method for manufacturing a rod body constituting a fishing rod, comprising: a step of spirally winding a tape-shaped haze film around a core; and a step of winding a prepreg around the outer periphery of the haze film. A method for manufacturing a rod body, comprising: a step of drawing out the core material after firing these to form a rod body by peeling the haze film from the prepreg; and a step of applying a paint to a peripheral surface of the rod body. 2. The manufacturing method according to claim 1, wherein one end of the rod body is inserted into a paint tank, and the paint is applied to a peripheral surface of the rod body by sucking and pumping the paint from the other end side.