JP2003071864A - Manufacturing method of composite reinforcing plate - Google Patents

Abstract

(57) [Problem] To provide a method for manufacturing a composite material reinforcing plate capable of obtaining a high-quality product while significantly reducing manufacturing labor and cost. SOLUTION: An outer plate material 11 'is arranged on a lower jig 30, a flexible mandrel 40 is arranged on the outer plate material 11', and a flexible mandrel is arranged on the outer plate material 11 '. Material 12 ′ for the reinforcing member so as to cover 40.
And the outer plate material 11 ′ and the reinforcing member material 1
The upper jig 50 is placed on 2 ′, and the space enclosed by the upper jig 50 and the lower jig 30 is evacuated to form the outer plate material 11 ′ and / or the reinforcing member. The thermosetting resin impregnated in the material 12 ′ is heated and cured, and the upper mold jig 5 is heated.
0, the lower jig 30 and the flexible mandrel 40 are removed to manufacture a composite material reinforcing plate.

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 composite material reinforcing plate, and more particularly to a method for manufacturing a composite material reinforcing plate using a flexible mandrel.

[0002]

2. Description of the Related Art In the aerospace field, there is a demand for lighter weight and higher strength of navigation bodies, so in recent years, aircraft structures are often manufactured from fiber reinforced plastics. For example, a reinforcing panel 100 to be incorporated in a main wing of an aircraft as shown in FIG. 7 is manufactured by separately molding an outer plate 110 and a reinforcing member 120, and then fastener-bonding them or bonding them with an adhesive. , This skin 11
As a molding method of 0, a method of laminating prepregs and curing them, or impregnating reinforcing fibers with a thermosetting resin and curing them is adopted.

Further, a prepreg laminated for the outer plate 110 and a reinforcing member 120 which has been primarily cured in advance are laminated with an adhesive, and a space surrounded by the reinforcing member 120 and the prepreg for the outer plate 110 (a hollow portion). ), The reinforcing member 120 and the prepreg for the outer plate 110 are covered with a bagging film, the air in the bagging film is discharged, and the outside of the bagging film is heated and cured to be reinforced by curing. A method of manufacturing the panel 100 is also adopted.

On the other hand, as a method of manufacturing the movable blades 200 such as ailerons, flaps, tabs, and the like with a fiber reinforced composite material, as shown in FIG.
The prepregs for 0 and the outer plate part 230 are laminated and hardened, and these are arranged at predetermined positions for fastener bonding or bonding with an adhesive, or the front edge part 21.
0, a girder portion 220 and a reinforcing fiber woven material for the outer plate portion 230 are set in a molding jig, and a thermosetting resin is introduced from the outside to be impregnated and cured.

When manufacturing the movable blade 200 described above,
The front hollow portion 300 formed of the front edge portion 210 and the girder portion 220, and the rear hollow portion 400 formed of the girder portion 220 and the upper and lower outer plate portions 230 are divided into metal or hard rubber. When a mandrel is inserted (see FIG. 8B) or when each hollow part 300, 400 has a complicated internal curved surface, a bagging film is inserted into each hollow part 300, 400 to introduce a pressurized gas. By
It prevents the front edge portion 210, the girder portion 220, and the upper and lower outer plate portion 230 from being deformed by the pressure applied during resin curing, and prevents the thermosetting resin from flowing out into the hollow portions 300 and 400. Was there.

[0006]

[Problems to be Solved by the Invention] However, the reinforcing panel 1
In the case of manufacturing 00, since the shape of the bagging film is not stable, it is difficult to accurately arrange the bagging film according to the internal shape of the hollow portion. If the bagging film is not placed accurately according to the inner shape of the hollow part, the pressure applied to the prepreg and the reinforced fiber woven material during curing of the thermosetting resin will be uneven and the product quality will deteriorate. In some cases, the bagging film had holes during molding, making pressurization impossible, or when the bagging film was removed, the bagging film broke and remained in the hollow portion. Further, the bagging film needs to be replaced every time, resulting in high cost.

On the other hand, when the above-described metal mandrel is used to manufacture the movable blade 200, the hollow portion has a cross-sectional shape of a constant shape or a taper shape in one direction, and the metal mandrel is formed after molding. The shape of the product was limited because the mandrel had to be removable.
In addition, even if the shape accuracy of the metal mandrel is slightly disturbed, it becomes difficult or impossible to remove it from the hollow part, so extremely precise processing accuracy is required,
The production cost was high. Furthermore, this metal mandrel is difficult to handle because of its heavy weight.

Further, the hard rubber mandrel described above is lighter in weight and does not require strict machining accuracy as compared with the metal mandrel, but since the rubber has a large coefficient of thermal expansion,
Due to the expansion of the hard rubber mandrel due to heating during curing of the thermosetting resin, excessive pressure may be applied to the thin portion of the prepreg or the reinforced fiber woven material, resulting in deterioration of product quality.

An object of the present invention is to provide a method of manufacturing a composite material reinforcing plate, which can obtain a high quality composite material product while significantly reducing the manufacturing labor and cost.

[0010]

In order to solve the above-mentioned problems, the method for manufacturing a composite material reinforcing plate according to claim 1 is, for example, as shown in FIG. A material laminating step for laminating materials, a flexible mandrel filled with silicone rubber beads or silicone rubber beads mixed with glass beads in a bag having elasticity and heat resistance, A flexible mandrel arranging step of arranging at a predetermined position on the outer plate material; a reinforcing member material arranging step of arranging a reinforcing member material on the outer plate material so as to cover the flexible mandrel; An upper die jig arranging step of arranging an upper die jig on the plate material and the reinforcing member material, and evacuating the space surrounded by the upper die jig and the lower die jig. Exhaust process and the empty Characterized in that it comprises a heating step of heating the outer plate material and the reinforcing member material while vacuuming the inner and the beads discharge step of discharging the beads from the flexible mandrel.

According to the first aspect of the present invention, a flexible mandrel is used to support the reinforcing member material instead of the conventionally used bagging film, and the flexible mandrel has an internal shape of the reinforcing member in advance. Since it can be freely deformed in accordance with the above, uniform pressure can be applied to the outer plate material and the reinforcing member material.
As a result, a very high quality composite product can be obtained.

According to the first aspect of the invention, instead of the conventionally used bagging film, the reinforcing member material is supported by the flexible mandrel, and after molding, the flexible mandrel is taken out and repeatedly used a plurality of times. Therefore, the manufacturing cost can be significantly reduced.

Further, according to the invention of claim 1, a flexible mandrel is used for supporting the reinforcing member material, instead of the metal mandrel which has been conventionally used, and the flexible mandrel is freely deformable. Since it is possible, regardless of the internal shape of the reinforcing member, it can be easily removed from between the outer plate and the reinforcing member after molding. Therefore, it is possible to manufacture composite reinforcing plates having various shapes. Further, since the flexible mandrel is not required to have strict machining accuracy unlike the metal mandrel, the mandrel manufacturing cost can be suppressed. In addition, the flexible mandrel is lighter than a metal mandrel, and therefore extremely easy to handle.

Furthermore, according to the first aspect of the invention, a flexible mandrel is used to support the reinforcing member material instead of the hard rubber mandrel that has been conventionally used, and the flexible mandrel is constructed. It is possible to control the magnitude of the pressure applied to the outer plate material and the reinforcing member material by adjusting the mixing ratio and the filling rate of the silicon rubber beads and the glass beads. Therefore, an extremely high quality composite material product can be obtained.

According to a second aspect of the present invention, in the method for producing a composite material reinforcing plate according to the first aspect, the outer plate material is a thermosetting resin film and a resin-unimpregnated reinforcing fiber arranged thereon. It is a woven material, the reinforcing member material is a resin unimpregnated reinforced fiber woven material, the suction port for vacuuming in the evacuation step and the heating step, of the reinforcing member material of the upper mold jig. It is characterized in that it is provided in the upper part.

According to the second aspect of the invention, in addition to the function and effect of the first aspect of the invention, a thermosetting resin film is disposed and the thermosetting resin film is heated and melted, whereby the thermosetting resin is reinforced. The fabric material is impregnated and cured,
Since the thermosetting resin film can be prepared very easily, the manufacturing labor and cost can be further reduced.

According to a third aspect of the present invention, in the method for manufacturing a composite reinforcing plate according to the first aspect, the outer plate material and the reinforcing member material are resin-impregnated reinforced fiber woven material, Between the evacuation step and the heating step, a thermosetting resin is introduced into the space surrounded by the lower die jig and the upper die jig by evacuation to introduce the outer plate material and the reinforcement. It is characterized by comprising a resin introducing step of impregnating the material for members.

According to the third aspect of the invention, in addition to the function and effect of the first aspect of the invention, the thermosetting resin is introduced only by the vacuum pressure to strengthen the outer plate material and the reinforcing member material. Since the fiber woven material is impregnated and cured, and the step of applying pressure for impregnating the resin is not performed, the labor and cost in manufacturing can be further reduced.

According to a fourth aspect of the present invention, in the method for manufacturing a composite reinforcing plate according to the first aspect, the outer plate material and the reinforcing member material are prepregs obtained by impregnating reinforcing fibers with a thermosetting resin. Is characterized in that.

According to a fifth aspect of the present invention, in the method for manufacturing a composite reinforcing plate according to the first aspect, the outer plate material is a prepreg obtained by impregnating reinforcing fibers with a thermosetting resin,
The reinforcing member material is a fiber reinforced resin component obtained by primary curing a thermosetting resin.

According to the invention of claim 4 or 5, the so-called prepreg laminating method or the co-bonding method which has been conventionally adopted can be adopted and the effects of the invention of claim 1 can be sufficiently exhibited. Therefore, by effectively utilizing the existing prepreg manufacturing equipment and autoclave,
Higher quality composite material products can be produced.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. The composite material product manufactured by the manufacturing method according to each of the embodiments is a reinforcing panel 10 incorporated in a main wing of an aircraft, and includes
As shown in FIG. 3, the outer plate 11 and the reinforcing member 12 are provided. As is clear from FIG. 2, the cross-sectional shape of the reinforcing member 12 when cut at right angles to the longitudinal direction is a hat type, and the reinforcing member 12 and the outer plate 1 having the hat type cross-sectional shape.
A hollow portion 20 is formed by the above.

[First Embodiment] In this embodiment, a method of manufacturing a reinforcing panel by a so-called RFI method will be described. First, a reinforced fiber woven material for molding the outer plate 11 (hereinafter referred to as “outer plate woven fabric”) 11 ′,
A reinforcing fiber woven material (hereinafter, referred to as “reinforcing member woven fabric”) 12 ′ for forming the reinforcing member 12 is prepared. The outer fabric 11 'and the reinforcing member fabric 12' are made of glass fiber,
The reinforcing fibers such as carbon fibers, aramid fibers and alumina fibers are woven in a flat plate shape, and glass fibers and different kinds of reinforcing fibers such as carbon fibers may be woven together.

The weave types include plain weave, twill weave,
Examples include satin weave. It is preferable that the reinforcing fibers be three-dimensionally (three-dimensionally) woven so that the reinforcing fibers are arranged in three directions of warp, weft, and vertical because a reinforcing panel having excellent strength can be manufactured. The thicknesses of the outer plate fabric 11 'and the reinforcing member fabric 12' can be appropriately determined according to the application of the reinforcing panel to be manufactured.

Next, as shown in FIG. 4, the lower die jig 30 is arranged. The surface shape of the lower jig 30 is the same as the surface shape of the outer plate 11 of the reinforcing panel 10 to be manufactured. The lower die jig 30 is assumed to have rigidity that does not deform even by the pressure applied during molding and heat resistance that can withstand heating in the heating step described later. As long as it has such characteristics, its structure and There are no restrictions on materials. It is preferable to incorporate a heating device in the lower jig 30 because it is not necessary to provide a large-scale heating device such as an autoclave or an oven.

Next, a thermosetting resin film (not shown) is placed on the lower die 30 (film placing step). This thermosetting resin film is heated and melted in a resin melting step to be described later to impregnate the outer plate fabric 11 'and the reinforcing member fabric 12' and cure the resin. The material of the thermosetting resin film is not particularly limited as long as it is a thermosetting resin for RFI, and among them, epoxy resin is suitable. The thickness of the thermosetting resin film can be appropriately determined according to the size of the reinforcing panel 10 to be manufactured.

Next, the outer plate fabric 11 'is placed on the thermosetting resin film (outer plate material placement step: see FIG. 4), and the flexible mandrel 40 is placed on the outer plate fabric 11'. (Flexible mandrel placement process:
(See FIG. 4), and further, the reinforcing member woven fabric 1 so as to cover the flexible mandrel 40 on the outer plate woven fabric 11 '.
2'is placed (fabric member woven fabric placement step: see FIG. 4),
The edges are sewn to the outer fabric 11 '.

As shown in FIG. 3, the flexible mandrel 40 has a bag 41 in which a silicon rubber bead (hereinafter referred to as "silicon bead") 42 and a glass bead (hereinafter referred to as "glass bead") 43 are provided. And are mixed and filled. The bag body 41 that constitutes the flexible mandrel 40 is assumed to be expandable and contractible according to the expansion and contraction of the silicon beads 42 filled therein, and to have heat resistance capable of withstanding the heating in the heating step described later. It can be prepared with fluorinated rubber or the like.

The diameter of the silicon beads 42, the coefficient of thermal expansion, the diameter of the glass beads 43, the mixing ratio of the silicon beads 42 and the glass beads 43, and the filling rate of the beads with respect to the volume inside the bag 41 are the size of the reinforcing panel 10 to be manufactured. And outer skin 1
1 and the reinforcing member 12 can be appropriately determined according to the pressure required for molding. In the present embodiment, the diameter of both beads is 2 mm to 5 mm, the thermal expansion coefficient of the silicon beads 42 is 2.8 × 10 ⁻⁴ K ⁻¹ , and the mixing ratio of both beads is silicon beads 42: glass beads 43 = 40. : 60, bag 4
The filling rate of the beads with respect to the volume in 1 (that is, the volume of the hollow portion 20) is 95%.

Since the flexible mandrel 40 can freely deform and expand by heating, the shapes of the silicon beads 42 and the glass beads 43 are not limited to spherical shapes. Further, the flexible mandrel 40 is not limited to the silicon beads 42 and the glass beads 43, and may be made of beads of three or more kinds of materials having different thermal expansion coefficients, and beads of one kind of material as long as an appropriate pressing force can be expressed. You may comprise. Further, when the flexible mandrel 40 is composed of beads of two or more kinds of materials having different thermal expansion coefficients, the mixing ratio of the beads can be partially changed to partially change the pressing force.

Further, in this embodiment, before the flexible mandrel 40 is arranged, the flexible mandrel 40 is formed on the mold having the same shape as the internal shape of the hollow portion 20.
And a bag body 41 of this flexible mandrel 40.
The air inside is discharged, and the shape of the flexible mandrel 40 is temporarily fixed. Moreover, both ends of the flexible mandrel 40 are made to project outside the both ends of the reinforcing member fabric 12 ′. This is because in the resin introducing step described later, when the thermosetting resin is impregnated into the fabric 11 'for the outer plate and the fabric 12' for the reinforcing member, the portion protruding to the outside of the flexible mandrel 40 and the upper mold cure described later. This is to prevent the thermosetting resin from flowing out by sealing the end portion of the tool 50 with a sealing member.

Next, the upper die jig 50 is placed on the outer plate fabric 11 'and the reinforcing member fabric 12' (upper die jig placement step: see FIG. 4). Although the shape of the reinforcing member fabric 12 'is formed to some extent by the flexible mandrel 40, a gap is often formed between the side surface portion of the flexible mandrel 40 and the reinforcing member fabric 12'. This gap will be eliminated by arranging them.

The upper die jig 50 is paired with the flexible mandrel 40 as described above, and the woven fabric 12 'for the reinforcing member.
It is preferable to have a rigidity that can be molded and a rigidity that can withstand the pressure at the time of molding, and to have high airtightness and liquid tightness so as to effectively function also in the exhaust process and the resin introduction process described later. Shall have. The upper die jig 50 is not limited in material as long as it has such characteristics, and can be made of rubber, a metal material, a synthetic resin, or the like.

Then, the space surrounded by the upper die jig 50 and the lower die jig 30 is evacuated (exhaust step). As an evacuation method, one or more exhaust holes are provided in the upper mold jig 50 or the lower mold jig 30, and these exhaust holes and a vacuum device such as a vacuum pump are connected by an exhaust pipe, and the vacuum device is used. A conventional method such as exhausting air in the space can be adopted. This exhausting step is a step of impregnating the fabric 11 'for the outer plate and the fabric 12' for the reinforcing member with the thermosetting resin and applying a vacuum pressure to prevent bubbles from remaining in the product.

Next, while performing the above-mentioned vacuuming,
The thermosetting resin film disposed between the lower jig 30 and the outer plate fabric 11 'is melted by heating, and the heat-curable thermosetting resin of the thermosetting resin film is mixed with the outer plate fabric. 11 'and the reinforcing member fabric 12' are impregnated. The heating can be performed by the heating device built in the lower jig 30 as described above, an oven, or the like. The resin melting temperature at this time is, for example, about 40 ° C. to 80 ° C. when the thermosetting resin film is made of an epoxy resin.

Next, the thermosetting resin impregnated in the outer plate fabric 11 'and the reinforcing member fabric 12' is cured by heating (heating step). The resin curing temperature when the thermosetting resin is an epoxy resin is about 80 ° C to 200 ° C.

Reinforcing panel 10 molded through the above steps
From the above, the upper jig 50 and the lower jig 30 are removed, the bag 41 of the flexible mandrel 40 is opened, and the silicon beads 42 and the glass beads 43 filled inside are discharged to the outside (bead discharging step). ), And finally, the bag body 41 is discharged from the hollow portion 20.

According to the manufacturing method of this embodiment, since the flexible mandrel 40 that can be freely deformed according to the internal shape of the hollow portion 20 is used, the outer fabric 11 'and the reinforcing member fabric are used. A uniform pressure can be applied to 12 '. As a result, a very high quality reinforcing panel 10 can be obtained. Further, since the flexible mandrel 40 can be freely deformed, it can be easily removed from the hollow portion 20 after molding, so that the manufacturing labor can be significantly reduced. Furthermore, since the flexible mandrel 40 can be repeatedly used a plurality of times, the manufacturing cost can be significantly reduced.

Further, according to the manufacturing method of the present embodiment, since the flexible mandrel 40 which does not require strict machining accuracy like the metal mandrel is used, the mandrel manufacturing cost can be suppressed. As a result, the manufacturing cost of the reinforcing panel 10 can be significantly reduced. In addition, the flexible mandrel 40 is lighter than a metal mandrel and is therefore extremely easy to handle. As a result, the labor required for manufacturing can be significantly reduced.

Further, according to the manufacturing method of the present embodiment, since the flexible mandrel 40 having the silicon beads 42 and the glass beads 43 as constituent elements is used, the filling rate of the silicon beads 42 and the glass beads 43, etc. It is possible to control the magnitude of the pressure applied to the outer fabric 11 'and the reinforcing member fabric 12' by adjusting. As a result, extremely high quality reinforcement panel 1
You can get 0.

Furthermore, according to the manufacturing method of the present embodiment, the thermosetting resin film is placed and heated and melted, so that the thermosetting resin is applied to the outer fabric 1.
Since the thermosetting resin film is impregnated and cured in 1'and the reinforcing member woven fabric 12 ', the thermosetting resin film can be prepared very easily and is easy to handle, so that the labor and cost in manufacturing can be reduced.

[Second Embodiment] In the present embodiment, a method of manufacturing the reinforcing panel 10 by using a so-called RTM method will be described, and the same method as the manufacturing method according to the first embodiment will be described. The description of the steps is omitted.

In the present embodiment, the thermosetting resin film is not arranged between the lower mold 30 and the outer fabric 11 ', and the outer fabric 11' is placed on the lower jig 30. Are directly arranged (material arranging step for outer plate). After this step, the flexible mandrel 40 used in the manufacturing method according to the first embodiment is arranged on the outer plate fabric 11 '(flexible mandrel arranging step), and the flexible mandrel 40 is used for the reinforcing member. Fabric 12 'is arranged (reinforcing member material arranging step), and the edge thereof is woven fabric 11' for outer panel.
Sew on.

Further, in the present embodiment, after the evacuation step of evacuating the space surrounded by the upper die jig 50 and the lower die jig 20, the vacuum of the evacuation step is placed in this space. By introducing thermosetting resin from outside by pressure and resin pressure,
The outer plate fabric 11 'and the reinforcing member fabric 12' are impregnated (resin introducing step). At this time, the thermosetting resin is supplied from a resin tank provided outside, and a resin introduction pipe connected to the resin tank is connected to the lower die jig 30,
The liquid thermosetting resin in the resin tank is introduced into the space by vacuum pressure and resin pressurization. Then, the impregnated thermosetting resin is cured by heating in the heating step.

[Third Embodiment] In this embodiment, a method for manufacturing the reinforcing panel 10 by using the prepreg laminating method will be described, and the same method as the manufacturing method according to the first embodiment will be described. The description of the steps is omitted.

In this embodiment, first, prepregs for the outer plate and the reinforcing member are prepared. In the present invention, the prepreg means a thin plate-like body in which reinforcing fibers are impregnated with an uncured thermosetting resin. As the reinforcing fibers constituting each prepreg, glass fiber, carbon fiber,
Examples include aramid fiber and alumina fiber. Examples of the thermosetting resin include epoxy resin, polyester resin and phenol resin.

In this embodiment, the outer plate prepreg is placed on the lower die 30 (outer plate material placement step). At this time, one prepreg having a desired thickness may be arranged, or a plurality of relatively thin prepregs may be laminated and arranged. Then, the flexible mandrel 40 used in the manufacturing method according to the first embodiment is arranged on the outer plate prepreg (flexible mandrel arranging step), and the reinforcing member prepreg is arranged on the flexible mandrel 40. Yes (reinforcing member material placement step).

Since the prepreg described above is in an uncured state, it is easily deformed by the pressure applied in the resin curing step.
In order to prevent such deformation, in the present embodiment, the upper mold jig 50 is arranged after covering the reinforcing member prepreg with the metal cowl plate (upper mold jig arrangement step). . In the present embodiment, the upper die jig 50
Is a bagging film having excellent heat resistance. In addition, in the present embodiment, heating / pressurization is performed by using an autoclave in the heating step.

[Fourth Embodiment] In this embodiment, a method of manufacturing the reinforcing panel 10 by using a so-called cobond method will be described, and the same method as the manufacturing method according to the first embodiment will be described. The description of the steps is omitted.

In this embodiment, as in the third embodiment, the outer plate prepregs are laminated. Further, the reinforcing member 1 is obtained by previously impregnating the reinforcing fiber with the thermosetting resin by the RTM method or the RFI method, and then primary curing.
Produce 2. The reinforcing member 12 may be one in which prepregs for the reinforcing member are laminated and primarily cured.

Further, in this embodiment, as in the third embodiment, the outer plate prepreg is placed on the lower die jig 30 (outer plate material arranging step), The flexible mandrel 40 used in the manufacturing method according to the first embodiment is arranged on the prepreg (flexible mandrel arranging step), and the primary cured reinforcing member 12 is arranged on the flexible mandrel 40 (reinforcement). Material placement process for members). Since the reinforcing member 12 that has been primarily cured has rigidity that can withstand the pressure applied in the heating step, it is not necessary to dispose the metal cowl plate as used in the third embodiment.

According to the manufacturing methods of the third and fourth embodiments, even when the so-called prepreg method or co-bonding method which has been conventionally adopted is used, the flexible mandrel 40 is used to obtain high quality. Can be obtained. That is, it is possible to manufacture an extremely high quality reinforcing panel by effectively utilizing the existing prepreg manufacturing apparatus, autoclave and the like.

In the first and second embodiments,
The outer fabric 11 'is placed on the lower die jig 30, the flexible mandrel 40 is placed on the outer fabric 11', and then the reinforcing member fabric 1 is covered so as to cover the flexible mandrel 40.
Although 2'is arranged and the reinforcing mandrel arranging step is performed after the flexible mandrel arranging step, the reinforcing member material arranging step can be performed before the flexible mandrel arranging step.

That is, the reinforcing member fabric 12 'is previously arranged on the outer plate fabric 11' (reinforcing member material arranging step), and the edge portion extending in the length direction of the reinforcing member fabric 12 '. May be sewn to the outer fabric 11 'to form the hollow portion 20 into which the flexible mandrel 40 can be inserted, and the flexible mandrel 40 may be inserted into the hollow portion 20 (flexible mandrel arranging step).

In the second embodiment, the thermosetting resin is introduced and impregnated by the vacuum pressure and the resin pressurization. However, the thermosetting resin is introduced only by the vacuum pressure, and the outer fabric is woven. By impregnating 11 ′ and the reinforcing member fabric 12 ′ and curing the woven fabric, it is not necessary to pressurize the resin for impregnating the resin, and thus the labor and cost in manufacturing can be further reduced.

Further, in each of the above embodiments, the manufacturing method according to the present invention is applied when manufacturing the reinforcing panel 10 including the reinforcing member having the hat-shaped cross section, but other composite materials having a hollow portion are used. The same can be applied when manufacturing a product. For example, as shown in FIG.
The movable wing 60 having the front hollow portion 70 formed of 1 and the girder portion 62 and the rear hollow portion 80 formed of the girder portion 62 and the upper and lower outer plate portions 63 is similar to that of the above-described embodiment. It can be manufactured by a procedure.

[0057]

According to the first aspect of the present invention, a flexible mandrel is used to support the reinforcing member material, instead of the conventionally used bagging film. Since the material can be freely deformed according to the shape, uniform pressure can be applied to the outer plate material and the reinforcing member material. As a result, a very high quality composite material product can be obtained.

According to the first aspect of the present invention, a flexible mandrel is used to support the reinforcing member material instead of the conventionally used bagging film, and the flexible mandrel is repeated a plurality of times. Since it can be used, the manufacturing cost can be significantly reduced.

Further, according to the invention of claim 1, a flexible mandrel is arranged to support the material for the reinforcing member, instead of the metal mandrel which has been conventionally used, and the flexible mandrel is freely deformable. Since it is possible, regardless of the internal shape of the reinforcing member, it can be easily removed from between the outer plate and the reinforcing member after molding. Therefore, it is possible to manufacture composite reinforcing plates having various shapes. Further, the flexible mandrel is not required to have strict processing accuracy unlike the metal mandrel, so that the mandrel manufacturing cost can be suppressed, and as a result, the manufacturing cost of the composite material product can be reduced. Also,
Flexible mandrels are lighter than metal mandrels and are therefore extremely easy to handle. As a result,
Manufacturing labor can be significantly reduced.

Further, according to the invention of claim 1, a flexible mandrel is arranged to support the material for the reinforcing member, instead of the hard rubber mandrel which is conventionally used, and the flexible mandrel is constructed. It is possible to control the magnitude of the pressure applied to the outer plate material and the reinforcing member material by adjusting the mixing ratio and the filling rate of the silicon rubber beads and the glass beads. As a result, a very high quality composite material product can be obtained.

According to the second aspect of the invention, not only the effect of the first aspect of the invention is obtained, but also the thermosetting resin film is arranged and heated and melted to form the thermosetting resin. The thermosetting resin film is extremely easy to prepare and is easy to handle because the reinforced fiber woven material that constitutes the material for the outer plate and the material for the reinforcing member is hardened. Can be further reduced.

According to the third aspect of the invention, not only the effect of the first aspect of the invention is exhibited, but also the thermosetting resin is introduced only by the vacuum pressure to form the outer plate material and the reinforcing member material. Since the reinforced fiber woven material as described above is impregnated and cured, and the step of applying pressure for impregnating the resin has not been performed, the labor and cost in manufacturing can be further reduced.

According to the invention described in claim 4 or 5, the so-called prepreg laminating method or the co-bonding method which has been conventionally adopted can be adopted and the effect of the invention described in claim 1 can be sufficiently exhibited. Therefore, by effectively utilizing the existing prepreg manufacturing equipment and autoclave,
Higher quality composite material products can be produced.

[Brief description of drawings]

FIG. 1 is a perspective view of a reinforcing panel manufactured by a manufacturing method according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of the reinforcing panel shown in FIG. 1 in the vicinity of a reinforcing member.

FIG. 3 is a schematic view of a flexible mandrel used in the manufacturing method according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram for explaining the manufacturing method according to the embodiment of the present invention.

FIG. 5 is a perspective view of a movable blade that can be manufactured by the manufacturing method according to the present invention.

6 is an enlarged cross-sectional view of a portion AA of the movable blade shown in FIG.

FIG. 7 is an explanatory diagram for explaining a conventional method of manufacturing a reinforcing panel having a hat-shaped cross-section reinforcing member.

FIG. 8 is an explanatory diagram for explaining a conventional method for manufacturing a movable blade, where (a) is a mandrel made of metal or hard rubber in the hollow portion when a bagging film is inserted in the hollow portion. Shows the case where is inserted.

[Explanation of symbols]

10 Reinforcement panel 11 Skin 11 'Reinforcing fiber woven material for skins 12 Reinforcement member 12 'reinforced fiber woven material for reinforcing member 20 hollow 30 Lower die 40 flexible mandrel 41 bags 42 Silicon Rubber Beads 43 glass beads 50 Upper die jig 60 movable wings 61 Front edge 62 digits 63 outer plate 70 Front hollow part 80 Rear hollow part 100 reinforced panel 110 skin 120 Reinforcement member 200 movable wings 210 front edge 220 digits 230 outer plate 300 front hollow part 400 Rear hollow part 500 bagging film 600 Mandrel made of metal or hard rubber

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B29L 22:00 B29L 22:00 (72) Inventor Yasuhiro Toi 1-7-2 Nishishinjuku, Shinjuku-ku, Tokyo Fuji Heavy Industries Ltd. F-term (reference) 4F204 AA36 AC03 AD16 AG07 AH31 FA01 FA03 FB01 FB12 FF01 FF05 FG02 FN11 FN12 FN16 FN30 FQ15 FQ37

Claims (5)

[Claims] 1. An outer plate material laminating step of laminating an outer plate material on a lower jig, and a silicone rubber bead on a bag having elasticity and heat resistance, or a glass on a silicon rubber bead. A flexible mandrel filled with a mixture of beads made of, a flexible mandrel arranging step of arranging the flexible mandrel at a predetermined position on the outer plate material, and a reinforcing member for covering the flexible mandrel on the outer plate material. A reinforcing member material arranging step of arranging a material; an upper die jig arranging step of arranging an upper die jig on the outer plate material and the reinforcing member material; the upper die jig and the lower die; An evacuation step for evacuating the space surrounded by the jig; a heating step for heating the outer plate material and the reinforcing member material while evacuating the space; Method of manufacturing a composite material reinforcement plate, characterized in that it comprises a bead discharge step of discharging the beads from barrels. 2. The outer panel material is a thermosetting resin film and a resin-impregnated reinforced fiber woven material disposed thereon, and the reinforcing member material is a resin-unimpregnated reinforced fiber woven material. The suction port for vacuuming in the exhausting step and the heating step is provided in an upper portion of the reinforcing member material of the upper jig, and the composite reinforcing plate according to claim 1, wherein Production method. 3. The outer plate material and the reinforcing member material are reinforced fiber woven materials not impregnated with resin, and the lower die jig and the upper die are provided between the exhausting step and the heating step. The composite material according to claim 1, further comprising a resin introducing step of introducing a thermosetting resin into the space surrounded by a jig to impregnate the outer plate material and the reinforcing member material. Manufacturing method of reinforcing plate. 4. The method for manufacturing a composite reinforcing plate according to claim 1, wherein the outer plate material and the reinforcing member material are prepregs obtained by impregnating reinforcing fibers with a thermosetting resin. 5. The outer plate material is a prepreg obtained by impregnating a reinforcing fiber with a thermosetting resin, and the reinforcing member material is a fiber-reinforced resin component obtained by primary curing a thermosetting resin. The method for manufacturing a composite reinforcing plate according to claim 1.