JPS62109627A - Manufacturing device for cylindrical part of fiber reinforced plastic - Google Patents

Abstract

PURPOSE:To manufacture the cylindrical part of FRP (fiber-reinforced plastic) carrying low winding angle and complying with high accuracy easily by installing the jig having protrusions in uniform pitch at both ends of mandrel and engaging continuously the resin-impregnated continuous fiber in axial direction on these protrusions. CONSTITUTION:The disc-type jigs 2 having the diameter larger than that of mandrel 1 are installed at both ends of the mandrel 1. The notches 3 and the protrusions 6 are provided in uniform pitches at the outer circumference of the jig 2. The resin-impregnated continuous fiber 4 is supplied from the guide 5 to the axial direction of mandrel 1 by reciprocating motion, and the said fiber 4 is engaged one by one to the protrusions 6 between the relative notches 3. The engagement to the protrusions 6 can be made either alternatively one in every other, or in every three. Thus, winding with high accuracy can be achieved almost in parallel with the axial direction (0 deg. or low degree winding) easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for manufacturing a cylindrical body made of fiber-reinforced plastic by a filament winding method.

[Conventional technology]

Cylindrical bodies made from fiber-reinforced plastics (hereinafter referred to as F, RP) are used in various fields such as sports equipment such as golf clubs and fishing rods, as well as in the fields of space science and aircraft.
The application of this technology to other uses is being considered.

In the production of FRP cylindrical bodies, the filament winding method using continuous fibers (hereinafter referred to as FW method) is often used, which is the method in which the contribution of the reinforcing material, which is a strength member of FRP, is the highest.

[Problem that the invention seeks to solve]

However, when manufacturing a cylindrical body using the FW method, as the wrapping angle of the fibers (the angle between the wrapped fibers and the longitudinal direction of the product) decreases, the tightening force decreases, so the fiber content and condensation do not increase. , the performance is often inferior to that of high-angle winding. Furthermore, since the wrapped fibers are also slippery, the angle tends to be irregular. This tendency is particularly noticeable at wrap angles around 0 degrees.

The purpose of this invention is to enable low-angle winding, especially 0 degree winding, of products that require axial rigidity, such as golf clubs, by using the FW method in an extremely simple and highly accurate manner by using a unique forming jig. It's about doing.

[Means for solving problems]

In order to solve the above problems, the present invention provides notches at a constant pitch on the outer peripheral surface of a disk-shaped jig having an outer diameter larger than the outer diameter of the mandrel, and the above-mentioned jig is attached to both end faces of the mandrel. The configuration is as follows:

〔Example〕

FIG. 1 shows an embodiment of the invention.

This device has a generally disc-shaped jig 2 attached to both ends of a cylindrical mandrel 1 and having an outer diameter larger than the outer diameter of the mandrel 1.

The jig 2 has notches 3 at a constant pitch on its outer peripheral surface, and the left and right sides of the jig 2 have the same shape.

The resin-impregnated continuous fibers 4 are fed from the guide 5 of the carriage part of the filament winding ink machine while reciprocating in the axial direction of the mandrel 1, and are rotated by one pitch of the notch 3 at each end of the mandrel 1. ,
The continuous fibers 4 are sequentially engaged with the protrusions 6 between the notches 3.

In this case, if the positions of the notches 3 in both jigs 2 in the circumferential direction match, the winding angle of the continuous fibers 4 will be 0 degrees. In addition, the position of the other jig 2 is shifted in the circumferential direction with respect to the other jig 2 within the range of one pitch of the notch 3, and the mandrel 1 is moved by the amount of shift according to the axial deflection of the continuous fiber 4. By rotating it, it is possible to perform winding at a low angle close to 0 degrees.

Furthermore, in any of the above cases, it is not necessary to pass the continuous fibers 4 through the notches 3 one after another, and it is possible to pass the continuous fibers 4 through the notches 3 as desired, such as skipping one or two, and it is only necessary that all the notches 3 are filled in the end. .

After performing the low angle winding as described above, 45mm
A cylindrical cylindrical body made of FRP is obtained by winding the product by 90 degrees or 90 degrees, followed by heat forming and cutting at both ends.

In addition, when using a fiber tape 7 as shown in FIG. 2 as the continuous fiber, if the width 3 is about twice the width of the notch 3, the tapes 7 will be in close contact with each other.
A cylindrical body can be formed only by winding at a low angle. Of course,
High angle winding such as 45 degree winding or 90 degree winding may be applied on top of this low angle winding.

〔effect〕

As described above, the device of the present invention has the effect of accurately and easily performing zero degree winding or low angle winding close to it by winding continuous fibers using the notches in the jig provided at both ends of the mandrel. be.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the embodiment, and FIG. 2 is a partially enlarged plan view in a state of use. 1... Mandrel, 2... Jig, 3... Notch,
4...Continuous fiber, 6...Protrusion

Claims (3)

[Claims] (1) A cylindrical body made of fiber-reinforced plastic made by providing notches at a constant pitch on the outer circumferential surface of a disk-shaped jig having an outer diameter larger than the outer diameter of the mandrel, and attaching the above-mentioned jig to both end faces of the mandrel. manufacturing equipment. (2) The apparatus for manufacturing a fiber-reinforced plastic cylindrical body according to claim 1, wherein the circumferential positions of the notches provided in each jig are made to coincide with each other. (3) The fiber according to claim 1, wherein the notch position of the other jig opposite to the notch provided in one jig is shifted in the circumferential direction within a range of one pitch of the notch. Manufacturing equipment for reinforced plastic cylinders.