JPS60118579A - Ring winding method - Google Patents

Abstract

PURPOSE:To mass-produce a ring reinforced structure of large rigidity, by placing preimpregnation (PREPREG) tapes on a core member to be oriented in its peripheral lengthwise direction and winding from the above of these tapes different PREPREG tapes on the core member at a pitch having a fixed angle. CONSTITUTION:Preimpregnation (PREPREG) tapes 3 drawn out from reels 2 are placed on a core member 1 to be oriented along its peripheral lengthwise direction, while PREPREG tapes 8 drawn out from bobbins 6 are wound on these PREPREG tapes 3 at a pitch having a fixed winding angle. In this way, a ring reinforced structure of large bending rigidity can be mass-produced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for winding a ring made of unidirectional fiber-reinforced plastic, such as a rim of a steering wheel, to reduce weight.

[Prior art]

As a method of obtaining a lightweight and highly rigid ring reinforcement for the ring-shaped rim of a steering wheel, which is generally subjected to bending and torsion, for example, a thin carbon fiber of 0.2 to 0.5 mm is applied to the central part of the ring in order to increase the bending rigidity. A prepreg tape made of unidirectional fiber-reinforced plastic such as or glass fiber is oriented, and another prepreg tape is wound over the ring at a certain angle and pitch to increase the torsional bending strength. A rigid ring reinforcement is obtained.

However, as a method for mass-producing ring reinforcing bodies, there is no suitable method in the prior art. There is a chance.

A toroidal winding machine finely winds a single coil wire with a round cross section around an iron core, and obtains magnetic force by changing the number of turns.
In addition, ring bandaging machines wrap the tape around the bandage product, but in both cases, a thin prepreg tape is oriented around the circumference of the ring, and another prepreg tape is oriented on top of it at a fixed angle and pitch. Furthermore, it is not possible to line up and wind multiple tapes at the same time.

[Summary of the invention]

This invention was made in order to eliminate the drawbacks of the conventional products such as ``2'', and it involves oriented prepreg tape on the core material in the circumferential direction, and applying another prepreg tape from the ``2'' of this tape to the core material. It is an object of the present invention to provide a ring winding method that can mass-produce a ring reinforcement body with high strength by winding a tape at a constant pitch with an angular pitch. 1 shows an embodiment of this invention, FIG. 1 is a plan view of an apparatus for carrying out this method, FIG. 2 is an enlarged sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is the same < It is a sectional view taken along the line m-at. In the figure, reference numeral 1 denotes a ring-shaped core material made of lightweight plastic foam, and this core material 1 rotates clockwise (FIG. 1) around a central axis 01 at a constant speed NI. 2.2ii A pair of reels arranged to sandwich the core material 1 from the inner diameter side and the outer diameter side, and the reels 2, 2 have a thickness of 0.
Prepreg tapes 3, 3 made of fiber-reinforced plastic such as carbon fiber or glass fiber with a thickness of 1 to 1.0 mm are wound, and both tapes 3, 3 are pressed against the inner and outer diameters of the core material by pressing rollers 4, 4. oriented along the plane.

5 is arranged behind the reels 2, 2, and the axis of the core material 1 is 0.5. It is an annular shuttle that rotates at a speed N around the center, and a plurality of bobbins 6 are arranged at equal intervals around the entire circumference of the shuttle 5.
It is attached via the som 7.

Reference numeral 8 denotes a prepreg tape similar to that described above, which is wound around each bobbin 6, and the end of each tape 8 is fixed to the top of the tape 3.3 with adhesive tape or the like.

Next, the operation will be explained. The prepreg tapes 3, 3 pulled out from both reels 2, 2 by rotating the core material 1 at a speed of N around 1110 degrees are oriented along the inner and outer diameter surfaces of the core material 1, and at the same time, 5 is rotated around the axis 02 of the core material 1 at a speed N2 and the prepreg tape 8 is pulled out from the bobbin 6, so that this tape 8 is attached to the core material 1 from above the prepreg tapes 3, 3 at a certain angle. Winding can be performed with an orientation of θ and a constant pitch P. By changing the ratio of the rotational speed N of the shuttle 5 and the rotational speed N of the core material 1, the prepreg tape 8
Winding with arbitrary angle θ and pitch P can be obtained.

In addition, in this invention, the shuttle 5 is equipped with a plurality of bobbins so that the prepreg tape 8 has a number and width that equally divides the interval of l pitch, so that the entire circumference of the core material is covered with the prepreg tape 8 in one rotation of the shuttle. Can be winded.

〔Effect of the invention〕

As described above, according to the present invention, a prepreg tape is oriented in the circumferential direction of the core material, and another prepreg tape can be applied to the core material from above this tape at a constant angle and pitch. This has the effect of making it possible to mass-produce ring reinforcing bodies with high bending rigidity.

[Brief explanation of drawings]

FIG. 1 is a plan view of an apparatus for carrying out the method of the present invention, FIG. 2 is an enlarged cross-sectional view taken along the line II--II of FIG. 1, and FIG. 3 is a cross-sectional view taken along the same <Ill-III line. DESCRIPTION OF SYMBOLS 1... Core material, 2... Reel, 3... Prepreg tape, 4... Pressing roller, 5... Shuttle, 6...
・Bobbin, 8 -- Prepreg chive. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) An annular shuttle is arranged around the axis of the core material for a ring-shaped 8 core material, and a prepreg tube made of unidirectional fiber reinforced plastic is wound around a bobbin provided on the shuttle. In the method of winding at a constant angle and pitch, the prepreg chive pulled out from the reel is oriented along the circumferential direction of the core material, and the prepreg chive pulled out from the bobbin by rotating the shaft A/ at a constant speed. At the same time as the cheese is turned, the core material is rotated at a predetermined speed around the central axis, and the prepreg tape pulled out from the bobbin is wound over the prepreg cheese oriented along the circumferential direction of the core material. A ring winding method featuring: (2) The ring winding method according to claim 1, characterized in that the shuttle is provided with a plurality of bobbins, so that winding can be performed all around the 8-way ring in one rotation of the shuttle.