JP2519192Y2 - Jig for fishing rod molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a jig used for forming a hollow tip of a fishing rod.

(Prior Art) A hollow tip of a fishing rod is formed by a mandrel forming method.

In this mandrel molding, a prepreg is wound around the mandrel, and then cellophane tape is tightly wound around the surface of the prepreg to keep the winding state of the prepreg constant. , The mandrel is pulled out to obtain a hollow rod.

(Problems to be solved by the invention) When molding a hollow tip with a small outer diameter by the above-mentioned mandrel molding, the mandrel used is as thin as a wire (for example, original diameter 3 mm, tip diameter 1 mm), so prepreg There is a problem that bending is generated on the small diameter side due to winding and lapping of the tape, and the formed rod rod is bent.

The present invention has been made in view of the problems of the prior art as described above, and is characterized by a jig capable of correcting and holding a bent mandrel in a straight line.

(Means for Solving the Problems) In order to achieve the above object, a forming jig according to the present invention is a linear groove having a V-shaped cross section for accommodating a mandrel wound with a material on a surface of a metal base plate. In the same manner as the taper of the mandrel from one side to the other in the longitudinal direction, the jig body is formed with the accommodating recess whose groove width and depth are gradually reduced, and the flat plate shape for fixing the mandrel in the accommodating recess. It is characterized by comprising a holding plate.

For the metal base plate, an aluminum plate, an iron plate, or the like that does not easily deform under the firing temperature (about 130 °) is used.

The cross-sectional shape of the accommodation recess formed on the base plate is V-shaped. Like the jig body, the holding plate is made of a material that does not easily deform under the firing temperature, and the holding plate is a flat plate.

(Operation) According to the above means, the mandrel having the prepreg wound and the tape lapped on the prepreg is fitted into the accommodating recess of the jig body to be straightly corrected and held, and the hollow rod with rich linearity is provided. The rod is molded.

(Effect of the device) Since the jig for forming a fishing rod of the present invention has the above-mentioned structure, even a mandrel that is bent due to the winding of the prepreg or the wrapping of the tape is fitted into the accommodation recess of the jig body and accommodated. As a result, it is corrected and held in a straight line state, and is baked and hardened in that state, so that a hollow rod with rich linearity can be easily formed.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
Reference numeral 1 is a jig body, 2 is a holding plate, and 3 is a mandrel.

The jig body 1 is a V plate with an angle of 90 ° on the surface of the aluminum plate.
A plurality of linear accommodating recesses 4 each having a V-shaped groove are arranged in parallel, and a large number of mandrels 3 can be accommodated at the same time.

The accommodating recess 4 is tapered in the same manner as the mandrel 3 so that the groove width and depth gradually decrease from one side to the other side.

The pressing plate 2 is for fitting the mandrel housed in the housing recess 4 of the jig body 1 and pressing it from above to prevent it from rattling and moving.

When setting the mandrel 3 in which the prepreg 5 is wound around the jig configured as described above and the tape 6 is wrapped, the mandrel 3 is set so that the outer surface of the prepreg 5 slightly projects from the surface of the jig body 1 and The holding plate 2 is attached to the mandrel to fix and hold the mandrel, and the mandrel is placed in a baking furnace and baked in this state.

Further, since the accommodating recess is V-shaped, the mandrel around which the prepreg is wound is supported by two-point contact and is pressed by the pressing plate 2 from above, so that the mandrel is stably supported.

[Brief description of drawings]

The drawing shows an embodiment of the present invention, and FIG. 1 is a perspective view of a jig,
Fig. 2 is a sectional view of the mandrel set on the jig.
FIG. 3 is an enlarged sectional view taken along the line (3)-(3) of FIG. In the figure, 1: Jig main body, 2: Presser plate 3: Mandrel, 4: Housing recess

Claims (1)

(57) [Scope of utility model registration request] 1. A straight groove having a V-shaped cross-section for accommodating a mandrel wound with a raw material on the surface of a metal base plate, and has a groove width and depth similar to the taper of the mandrel from one longitudinal direction to the other. A jig for forming a fishing rod, comprising: a jig main body having a housing recess whose diameter is gradually reduced; and a flat plate-shaped pressing plate for fixing a mandrel in the housing recess.