JP3620021B2 - High-speed rotating body for power storage flywheel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-speed rotating body for a power storage flywheel that can be suitably used as a power storage flywheel.
[0002]
[Prior art]
High-strength, high-speed rotating bodies used for power storage flywheels, brake discs, rotating grindstones, and the like are sometimes manufactured from a composite material using a spiral woven fabric as a reinforcing material. This is because the spiral woven fabric has continuous warps in the circumferential direction and can effectively enhance the centrifugal strength of the high-speed rotating body.
[0003]
The spiral woven fabric uses high-strength fibers such as carbon fibers and aramid fibers as warps and wefts, and also warps the warps in a spiral shape and arranges the wefts in the radial direction of the warps, making them both in a spiral sheet shape. Can be woven. Since this product uses high-strength fibers for warp and weft, it is difficult to fold back the weft at the outer peripheral part of the fabric, and to prevent the warp from being scattered at the outer peripheral part, It is necessary to protrude from the warp long enough.
[0004]
[Problems to be solved by the invention]
In such a prior art, since the weft protrudes excessively long from the outermost periphery, when the matrix material is filled in the mold frame, the projected part of the weft contacts the mold frame to form the spiral woven fabric. There is a problem that the reinforcing material using the spiral woven fabric may be eccentric with respect to the matrix material and may be eccentric with respect to the rotation center of the rotating body. It was.
[0005]
Accordingly, in view of the problems of the prior art, an object of the present invention is to use a spiral woven fabric that fuses hot melt yarns arranged along the outer side of the outermost warp yarn to each weft yarn and trims the weft yarn as a reinforcing material. It is an object of the present invention to provide a high-speed rotating body for a power storage flywheel in which a reinforcing material can be correctly positioned in a formwork and can be easily positioned concentrically with respect to a matrix material.
[0006]
[Means for Solving the Problems]
The configuration of the present invention for achieving such an object includes a matrix material and a reinforcing material that reinforces the matrix material. The reinforcing material uses a spiral woven fabric, and the spiral woven fabric is arranged in a spiral shape. The warp yarns, the weft yarns that are alternately entangled with the warp yarns, and the hot melt yarns that are alternately entangled with the weft yarns along the outer side of the outermost warp yarn. The gist is that the weft is fused to the weft and the weft is cut and aligned outside the hot melt yarn.
[0007]
The weft yarn can be alternately entangled with the second hot melt yarn along the inner side of the innermost warp. The second hot melt yarn is fused to each weft, and the weft is the second Can be trimmed inside the molten yarn.
[0008]
Furthermore, the third hot melt yarn along the inner side of the outermost peripheral warp can be alternately entangled and fused to the weft.
[0009]
Note that the warp yarns may have a radial arrangement pitch that decreases from the inside to the outside, and the fineness may increase in order from the inside to the outside.
[0010]
[Action]
According to the configuration of the invention, in the spiral woven fabric, the hot melt yarn along the outside of the outermost warp is fused to each weft, and the protruding portions from the outer periphery of each weft are connected to each other via the hot melt yarn. Therefore, it is possible to prevent the warp yarns from being scattered in the outer peripheral portion including the outermost periphery, and to cut each weft yarn neatly and shortly outside the hot melt yarn. Therefore, when the spiral woven fabric is used as a reinforcing material, it is properly positioned and accommodated with respect to the formwork, and the reinforcing material is correctly concentrically positioned with respect to the matrix material by filling the formwork with the matrix material. And the overall strength can be reinforced uniformly.
[0011]
The spiral woven fabric is a warp or weft, for example, pitch-based or PAN-based carbon fiber, glass fiber, aramid fiber, Tyranno fiber, alumina fiber, silica fiber, boron fiber, potassium titanate fiber, zirconia fiber, High-strength fibers such as silicon carbide fibers, polyacrylonitrile fibers, polyacrylate fibers, wholly aromatic polyester fibers, ultrahigh-molecular polyethylene fibers, high-strength vinylon fibers, high-strength acrylic fibers, and metal fibers can be used. These fibers are arranged in parallel with a flat cross section having a width of several mm and a thickness of about 0.1 to 0.4 mm, and used as a multifilament yarn of an arbitrary fineness, For example, carbon fibers, glass fibers, alumina fibers, and the like are preferably assembled from about 1000 to 36000 single yarns having a diameter of about 5 to 10 μm. In addition, it is preferable that aramid fibers or the like aggregate a single yarn of about 1 to 5d and have a total yarn denier of several thousand to several tens of thousands d.
[0012]
However, the warp and the weft may have the same fineness or may have different finenesses, and both may be the same material or different materials. The fineness here refers to the size of the cross section of the warp or weft. Moreover, you may use a warp with a large specific elastic modulus and specific strength outside the inside.
[0013]
In addition, as a matrix material, epoxy resin, unsaturated polyester resin, phenol resin, polyimide, polyamide, polycarbonate, polyacetal, polyphenylene ether, polyarylate, polyphenylene sulfide, polysulfone, polyethersulfone, polyetheretherketone, polyetherimide, High-strength engineering plastic materials such as polyamideimide and ethylene vinyl alcohol copolymer can be used. In order to improve mechanical strength, heat resistance, wear resistance, etc., these materials are dispersed by using appropriate organic compounds, inorganic substances, abrasive grains, ceramics, metal fibers, whiskers, powders, etc. as fillers. It may be incorporated or surface coated.
[0014]
The hot melt yarn is a fiber made of a thermoplastic resin that melts in a low temperature region, and for example, polyamides such as nylon 6 and general plastic materials such as polyethylene, polystyrene, polypropylene, and polycarbonate can be widely used.
[0015]
On the other hand, the spiral woven fabric can be formed by weaving warps and wefts into an arbitrary woven structure such as plain weave, twill weave, satin weave and the like. When weaving a spiral woven fabric, it is possible to use any weft insertion type loom such as a fluid jet type using air or water jet, in addition to a rapier mechanism and a needle mechanism.
[0016]
If the second hot melt yarn is provided along the inner side of the innermost warp, the wefts are connected to each other on the inner peripheral side via the second hot melt yarn, and the inner circumference including the innermost circumference. It is possible to prevent the warp yarns from being scattered.
[0017]
The weft yarn for fusing the second hot melt yarn can be trimmed inside the second heat melt yarn, the length protruding inward from the innermost circumference can be minimized, and the opening portion on the axis When a hollow cylindrical high-speed rotating body having a shape is molded, there is no possibility of interference with the mold core.
[0018]
If a third hot melt yarn is provided along the inner side of the outermost peripheral warp, the third weft yarn and the outermost hot melt yarn are arranged on the inner and outer sides of the outermost warp, It is possible to more effectively prevent the warp yarns from being distributed on the outer peripheral portion.
[0019]
If the arrangement pitch in the radial direction of the warp is reduced from the inner side to the outer side, the warp increases the warp density in the radial direction from the inner side to the outer side to compensate for the decrease in the radial weft density. A uniform basis weight can be realized as a whole, or the basis weight can be gradually increased from the inside toward the outside.
[0020]
By increasing the fineness in order from the inside to the outside, the warp increases the substantial warp density in the radial direction from the inside to the outside, compensates for the decrease in the radial weft density, and is arranged in the radial direction. The same effect as when the pitch is reduced can be obtained.
[0021]
For the second and third hot melt yarns, the same or different thermoplastic resin as the outermost hot melt yarn can be used.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
A high-speed rotating body 10 for a power storage flywheel is integrally formed of a composite material including a matrix material 11 and a reinforcing material 12 (FIG. 1).
[0024]
The spiral woven fabric S used as the reinforcing material 12 is a weft Sf, Sf arranged in the radial direction of the warp Sp, Sp ... while being alternately entangled with the warp Sp, Sp ... arranged in a spiral. ... and hot melt yarns S1, S1 that are alternately entangled with the wefts Sf, Sf ... along the outer side of the outermost warp Sp (Figs. 2 and 3). The spiral woven fabric S is provided with second hot melt yarns S2 and S2 along the inner side of the innermost warp Sp. The second hot melt yarns S2 and S2 are connected to the weft yarns Sf, Sf. They are entangled alternately.
[0025]
The spiral woven fabric S is formed in a spiral sheet shape with an outer diameter D1 and an inner diameter D2 << D1 by weaving warps Sp, Sp..., Wefts Sf, Sf. The warps Sp 1, Sp... Are arranged spirally in a radial arrangement pitch d, and the wefts Sf 1, Sf... Are arranged radially in the radial direction of the warps Sp 1, Sp 3. The wefts Sf 1, Sf 2... Are cut out on the outer and inner sides of the outermost outer side hot melt yarns S 1 and S 1 and the inner peripheral side second hot melt yarns S 2 and S 2. The lengths L1 and L2 protrude shortly outside Sp and inside the innermost warp Sp, respectively.
[0026]
The hot melt yarns S1 and S1 are woven into the outermost peripheral portion of the spiral fabric S while being alternately entangled with the weft yarns Sf, Sf. The hot melt yarns S1 and S1 are melted by heating and are fused to the weft yarns Sf, Sf. On the other hand, the second hot melt yarns S2 and S2 are woven into the innermost peripheral portion of the spiral fabric S while being alternately entangled with the weft yarns Sf and Sf, and are fused to the weft yarns Sf and Sf.
[0027]
The spiral woven fabric S holds each weft Sf by the hot melt yarns S1 and S1 and the second heat melt yarns S2 and S2, and is relative to the outermost and innermost warps Sp and Sp with respect to the wefts Sf and Sf. It is possible to prevent the warp yarns Sp, Sp... This is because the weft yarns Sf 1, Sf... Can be connected to each other at both ends by the fusion of the hot melt yarns S 1 and S 1 and the second hot melt yarns S 2 and S 2. Accordingly, the wefts Sf can be trimmed with the lengths L1 and L2 of the protruding portions protruding outward and inward from the outermost and innermost warps Sp 1 and Sp 2, respectively.
[0028]
The spiral woven fabric S can be used as a reinforcing material 12 for reinforcing the matrix material 11 forming the high-speed rotating body 10 (FIG. 1).
[0029]
The high-speed rotating body 10 is formed in a hollow cylindrical shape having an outer diameter D1a ≧ D1 and an inner diameter D2a ≦ D2 << D1a. The matrix material 11 has a circular opening portion 11a around the axis C, and the reinforcing material 12 is embedded concentrically with the matrix material 11 around the axis C, and extends over the entire height of the matrix material 11. Are stacked. Therefore, the reinforcing material 12 can reinforce the entire matrix material 11.
[0030]
The high-speed rotating body 10 is integrally formed as follows (FIGS. 4 and 5). However, FIG. 5B is a schematic plan view of FIG.
[0031]
That is, the spiral woven fabric S laminated in the axial direction is accommodated in the mold W as the reinforcing material 12. At this time, since the reinforcing material 12 is neatly formed on the outer diameter D1 and the inner diameter D2, it can be correctly positioned concentrically with respect to the axis Ca 1 of the mold W. Subsequently, the mold W is clamped, the inside of the mold W is evacuated, and the matrix material 11 is filled into the mold W. The mold W may be vented prior to the filling of the matrix material 11 or may be vented while filling the matrix material 11. At this time, the matrix material 11 is uniformly impregnated into the reinforcing material 12 and integrated. When the matrix material 11 is cured, the matrix material 11 and the reinforcing material 12 are released from the formwork W, the surface is finished, and the high-speed rotating body 10 is completed.
[0032]
The high-speed rotating body 10 manufactured in this way is integrally formed with the matrix material 11 and the reinforcing material 12, and the warps Sp, Sp... Of the reinforcing material 12 are continuous in the circumferential direction. The strength is high, and the strength of centrifugal force during high-speed rotation can be increased.
[0033]
In the above description, one hot melt yarn S1 may be alternately entangled with the wefts Sf, Sf... On the outer peripheral side of the spiral fabric S shown in FIGS. 2 and 3 (FIG. 6A). Two or more hot melt yarns S 1, S 1... May be entangled with the weft yarns Sf 1, Sf... (FIGS. (B) and (C)). However, FIG. 6B illustrates a form in which the two hot melt yarns S1 and S1 intersect each other on the left and right sides of each weft Sf, and FIG. 6C shows the four hot melt yarns. The form which cross | intersects up and down on both sides of each weft Sf every two S1, S1 ... is shown in figure. Note that one or more of the second hot melt yarns S2 may be alternately entangled with the weft yarns Sf 1, Sf..., Similarly to the hot melt yarn S1 of FIG. Further, the second hot melt yarn S2 may be omitted. At this time, the weft yarns Sf, Sf...
[0034]
Further, in the spiral woven fabric S, the third hot-melt yarn S3 may be alternately entangled with the wefts Sf, Sf... Along the inner side of the outermost warp Sp (FIG. 7). The third hot melt yarn S3 can prevent the warp yarns Sp, Sp... From being scattered together with the outermost peripheral hot melt yarn S1. The third hot melt yarn S3 may also be one or two or more.
[0035]
Further, the warps Sp 1, Sp... May be arranged with the radial arrangement pitch d decreasing from the inside to the outside of the spiral woven fabric S (FIG. 8A), and sequentially from the inside to the outside. The fineness may be increased ((B) in the figure). Even if the weft density decreases from the inside to the outside of the spiral fabric S, the warps Sp 1, Sp 2.
[0036]
[Other embodiments]
The reinforcing material 12 may be formed by laminating the spiral woven fabrics S, S... Separated in an appropriate number of turns in the axial direction (FIG. 9A), and the spiral woven fabric S separated in one turn. , S... May be laminated in the axial direction (FIG. 5B). The reinforcing material 12 can be more uniformly impregnated with the matrix material 11 by filling the spirally woven fabrics S, S... With the matrix material 11 for each block having an appropriate thickness in the axial direction. The spiral woven fabrics S, S... Are appropriately moved in the circumferential direction so that the cutting position Sa does not coincide with the small number of turns and the centrifugal strength strength is not unduly lowered. However, it shall be laminated.
[0037]
The high-speed rotating body 10 may be formed in a thin disk shape (FIGS. 10A and 10B) or a cylindrical shape (FIG. 10C). Further, the matrix material 11 may be formed with an opening 11a around the axis C (FIG. (B)) or may not be formed (FIGS. (A) and (C)).
[0038]
【The invention's effect】
As described above, according to the present invention, by using the spiral woven fabric that arranges the hot melt yarn along the outer side of the outermost peripheral warp and cuts the wefts protruding from the outermost periphery shortly as a reinforcing material. Because the reinforcing material can be easily and correctly positioned in the formwork and concentric with the matrix material, the matrix material can be uniformly reinforced and a strong centrifugal strength can be easily realized. Has an excellent effect.
[0039]
In addition, since the matrix material and the reinforcing material can be integrally formed, the manufacturing cost can be reduced and uniform quality can be easily guaranteed as compared with conventional manufacturing methods such as the filament winding method and the multi-ring method. There is also an effect that can be done.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view of an entire configuration. FIG. 2 is an explanatory perspective view of a spiral woven fabric. FIG. 3 is an enlarged plan explanatory view of a main part of FIG. 2. FIG.
FIG. 5 is a manufacturing process explanatory diagram (2).
FIG. 6 is an enlarged schematic explanatory view of a main part showing another embodiment (1).
FIG. 7 is a main part enlarged schematic diagram showing another embodiment. FIG. 8 is a main part enlarged schematic explanatory view showing another embodiment (2).
FIG. 9 is an exploded perspective view of a main part showing another embodiment. FIG. 10 is a perspective view showing another embodiment.
S ... Spiral woven fabric Sp ... Warp yarn Sf ... Weft S1 ... Hot melt yarn S2 ... Second hot melt yarn S3 ... Third hot melt yarn d ... Arrangement pitch 10 ... High-speed rotating body 11 ... Matrix material 12 ... Reinforcing material

Claims (6)

A matrix material and a reinforcing material that reinforces the matrix material, and the reinforcing material uses a spiral woven fabric, and the spiral woven fabric is alternately entangled with the warp yarns arranged in a spiral shape. While having a weft arranged in the radial direction of the warp and a hot melt yarn alternately entangled with the weft along the outermost outer periphery of the warp, the hot melt yarn is fused to each weft. The high-speed rotating body for a power storage flywheel is characterized in that the weft is cut and aligned on the outside of the hot melt yarn. 2. The high-speed rotating body for a power storage flywheel according to claim 1, wherein the weft yarn is alternately entangled with the second hot-melt yarn along the inner side of the innermost warp. 3. The power storage flyhole according to claim 2, wherein the second hot melt yarn is fused to each of the weft yarns, and the weft yarn is trimmed inside the second heat melt yarn . High speed rotating body. The power storage fly according to any one of claims 1 to 3, wherein a third hot melt yarn along the inner side of the outermost outer warp is alternately entangled and fused to the weft. High-speed rotating body for halls . The high-speed rotating body for a power storage flyhole according to any one of claims 1 to 4, wherein the warp yarns have a radial arrangement pitch that decreases from the inside toward the outside. The high-speed rotating body for a power storage flyhole according to any one of claims 1 to 5, wherein the warp yarns increase in fineness in order from the inside toward the outside.

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