JP5854430B2 - FRP manufacturing apparatus and FRP manufacturing method - Google Patents

Description

  The present invention relates to a fiber reinforced plastic (FRP) manufacturing apparatus using a RTM (Resin Transfer Molding) molding method, and in particular, a fiber capable of manufacturing a large structural member having a length of several meters to several tens of meters. The present invention relates to a reinforced plastic manufacturing apparatus.

  FRP is a lightweight material that can exhibit high mechanical properties, and is used in various fields. As typical methods for producing FRP, a prepreg method, an RTM method, and the like are known.

  The prepreg method is a method in which a sheet obtained by impregnating a reinforced fiber with a semi-cured resin in advance called a prepreg is heated and pressed in a pressure cooker called an autoclave. In this case, in order to obtain a large molded product, it is necessary to use a pressure cooker larger than the molded product. In a pressure vessel such as a pressure cooker, the lid and the opening / closing part must have a stronger structure as the content increases and the opening / closing part increases. Therefore, it is a molding method that requires a great investment for installation and maintenance of the apparatus.

  On the other hand, the RTM method is a molding method in which reinforcing fibers are arranged in a cavity of a double-sided mold, and a resin is injected into the cavity by pressurizing and injecting the resin into the reinforcing fibers. By using a double-sided mold, the surface quality and dimensional accuracy of the molded product can be improved. However, especially when the resin is injected under pressure, if the pressure of the resin is increased more than necessary, the relative position of the double-sided mold opens during molding and the resin leaks between the molds, and the desired molding. The product cannot be obtained. In order to prevent such problems, it is necessary to firmly fix the molds together with a large number of fastening jigs such as screws, or to hold the pressure by means from the outside to prevent mold opening.

  When fixing using a fastening jig, it is possible to adopt a simple mold structure, but on the other hand, it is necessary to enlarge the mold in order to form a large structural member. The number of locations increases, which is not realistic from the viewpoint of work.

  On the other hand, a hydraulic press apparatus is generally used as a method of holding pressure by means from the outside. In particular, when applied to large structural members, it is not practical to prepare a hydraulic press device of the same size. On the other hand, high rigidity that does not deform the mold shape is required. If the mold is deformed at the time of pressurization, a uniform applied pressure is not generated at the seal portion, causing resin leakage and air inflow, which may cause a non-impregnated portion in which the resin is not impregnated in the molded product. Furthermore, when the mold and the press device become large, a great investment is required for installation and maintenance of the device.

  As one of means for solving the above problem, Patent Document 1 discloses a method of expanding a tube using air pressure and using the expansion pressure for preventing mold opening. By utilizing the expansion force of the tube as a means to prevent one-sided opening, parts that require machining accuracy and seal parts that are used in conventional cylinder / piston structures are no longer required, and are less expensive than conventional press machines. It is possible to provide a simple mold opening prevention mechanism. The present invention can also be applied to the RTM method, and the mold opening prevention mechanism can be simplified. However, in the case of simple replacement, there is no change in that the mold is required to have high rigidity that does not deform the mold shape with respect to the external force that is applied, as in the conventional method using a hydraulic press.

Japanese Patent No. 3902345

  Therefore, an object of the present invention is to apply a pneumatic clamping mechanism to an FRP manufacturing apparatus using a tube-shaped bag-like pressurizing unit in a FRP manufacturing apparatus that pressurizes and injects resin into a double-sided mold. The pressurization source of the machine is simplified, and even if a mold that does not require high rigidity is used, even if it is a large molded product, dimensional accuracy such as thickness is not reduced, and maintenance is required An object of the present invention is to provide an FRP manufacturing apparatus that can reduce labor.

  As a method for solving the above problems, the present invention uses the following means. That is, a suction port for discharging air inside at least one cavity connected to the cavity, and a first mold having a cavity having a molded product shape and a second mold covering the cavity, and at least one An FRP manufacturing apparatus using a double-sided mold comprising an injection port for injecting resin into one cavity and impregnating the reinforcing fiber base housed in the cavity with the resin, wherein the first mold and the first mold A support body surrounding the periphery of the two molds, and the first mold and the second mold between the support and the first mold and / or the support and the second mold. It is set as the structure of the shaping | molding apparatus provided with the some bag-shaped pressurization body which sticks. The bag-like pressurizing body is at least one pressurizing so as to cover at least one first bag-like pressurizing body that pressurizes at least a range in which the cavity is provided and a seal member provided on the peripheral edge of the cavity. The FRP manufacturing apparatus includes two second bag-shaped pressurizing bodies, and the first bag-shaped pressurizing body and the second bag-shaped pressurizing body can individually adjust the pressurizing force.

  Further, the pressure in the first bag-shaped pressurized body is set to be equal to or higher than the injection pressure of the resin injected into the mold, and the pressure body in the second bag-shaped pressurized body is more than the first bag-shaped pressurized body. It is desirable to pressurize at a high pressure.

  Further, as one of the features of this apparatus, it is desirable that the thickness of the second mold is 5 mm or more and 100 mm or less.

  Furthermore, this device is connected to a suction port provided in the cavity and vacuum suction is applied to the cavity, and is connected to an injection port provided in the cavity to add a resin for injecting pressurized resin into the cavity. It is desirable to have a configuration including a pressure device.

  Furthermore, this apparatus has a transfer mechanism for supporting any one of the first and second molds and the pressure support and changing the relative positions of the first mold and the second mold. desirable. This transfer mechanism is used to change the relative position of the molds, and does not generate a pressing force for preventing mold opening when clamping the mold after combining the first mold and the second mold. It can be a structure. At this time, it is desirable that the separation distance between the first mold and the second mold before the mold clamping is larger than the maximum height at which the reinforcing fiber base housed in the cavity protrudes from the cavity.

  By using the present invention, in a FRP manufacturing apparatus that pressurizes and injects resin into a double-sided mold, by using a tubular bag-shaped pressurizing body and applying a pneumatic clamping mechanism to the FRP manufacturing apparatus, a press machine Simplify the pressure source, etc., and use a mold that does not require high rigidity, even for large molded products, without reducing the dimensional accuracy such as thickness, and maintenance An FRP manufacturing apparatus capable of reducing labor can be provided.

It is a schematic perspective view which shows the state which closed the 2nd type | mold support body in the FRP manufacturing apparatus used for this invention. It is a schematic perspective view which shows the state which the 2nd type | mold support body opened in the FRP manufacturing apparatus used for this invention. It is a schematic cross-sectional view which shows the state which the 2nd type | mold support body opened in the FRP manufacturing apparatus used for this invention. It is a schematic cross-sectional view which shows the state which closed the 2nd type | mold support body in the FRP manufacturing apparatus used for this invention. It is a schematic cross-sectional view which shows the state which expanded the bag-shaped pressurization body in the FRP manufacturing apparatus used for this invention. It is a schematic cross-sectional view which shows the state by which the bag-shaped pressurization body in the FRP manufacturing apparatus given to the comparative example was arrange | positioned. It is a schematic cross-sectional view which shows the state which the 2nd type | mold support body opened in the RTM apparatus of another aspect (up-and-down opening / closing) used for this invention. It is a schematic cross-sectional view which shows the state which made the 1st type | mold support body movable in the RTM apparatus of another aspect (up-and-down opening / closing) used for this invention.

  The present invention will be described below with reference to the drawings. In addition, this invention is not restrict | limited to the shown figure.

  1 and 2 are perspective views of an FRP manufacturing apparatus used in the present invention. FIG. 3 is a cross-sectional view schematically showing a cross section of the FRP manufacturing apparatus used in the present invention.

  As shown in FIG. 2, the FRP manufacturing apparatus used in the present invention is a first mold (1) provided with a cavity (7) for arranging a reinforcing fiber base and a seal member (6) provided on the peripheral edge thereof. 1) a second mold (2) covering the cavity (7), a first mold support (11) supporting the first mold, and a second mold support (12) supporting the second mold, respectively. And the supports are connected by a hinge (16). When the first mold support (11) and the second mold support (12) are connected by a hinge (16), a jack or the like driven by a hydraulic or pneumatic cylinder or various motors (not shown) The relative position of the first mold (1) and the second mold (2) is substantially changed by rotating the second mold support (12) around the axis of the hinge (16) using Can be made.

  Further, as shown in FIG. 3, a range including the cavity (7) of the first mold is provided between the second mold (2) and the second mold support (12) supporting the second mold. A first bag-shaped pressurizing body (3) for pressurization and a second bag-shaped pressurizing body (4) for pressurizing the seal member (6) are provided.

  The 2nd type | mold (2) and the 2nd type | mold support body (12) which supports a 2nd type | mold are connected by the guide rail (31). The guide rail (31) and the second die (2) are not fixed, and the second die (2) has a structure that can move up and down along the guide rail (31). Thus, when the second mold support (12) is opened, the second mold (2) follows and lifts, while when the mold is closed, the first mold (1 ) Helps to properly arrange the second mold (2) and prevents the second mold (2) from shifting laterally when the bag-like pressurizing body is inflated.

  The first mold (1) is provided with a suction port (22) for evacuating the cavity (7) and an injection port (21) for injecting pressurized resin into the cavity (7). It has been. The arrangement location and the number of installation of the suction port (22) and the injection port (21) can be determined by the size of the reinforcing fiber base to be used and the degree of impregnation of the resin.

  The first mold support (11) and the second mold support (12) are preferably fastened at one side by a hinge (16). Moreover, it is preferable to provide the through-hole (13) (14) which attaches a pin in the edge | side facing the edge | side in which the hinge (16) was provided. When the mold is closed, the through hole (13) of the first mold support and the through hole (14) of the second mold support are aligned, and the pin (15) is inserted. By doing so, the distance between the first mold support (11) and the second mold support (12) does not change during the resin injection due to the pressure of the resin to be injected under pressure into the cavity (7). Can be fixed.

  Here, the first and second bag-shaped pressurizing bodies (3) and (4) are connected to a pump (not shown) so that compressed air pressurized at different pressures can be sent to each. Is preferred. At this time, if the pressure in the bag-like pressurized body can be adjusted individually, such as connecting to different pumps, or connecting after adjusting the compressed air branched from one pump with a separate regulator The connection method is not limited.

  By arrange | positioning a 2nd bag-shaped pressurization body (4) on a sealing member (6), only a seal part can be pressurized equally and a mold clamping can be performed efficiently. Therefore, it becomes easy to prevent leakage of resin from between molds and inflow of air. On the other hand, the first bag-like pressure body (3) functions to suppress deformation of the cavity portion. If the applied pressure of the first bag-shaped pressurizing body (3) is set to be equal to or higher than the pressure of the resin to be injected, the pressure applied to the wall surface of the cavity (7) when the injection is completed and the resin fills the cavity (7). The second mold (2) is not separated from the first mold (1) by the resin injection pressure. Therefore, even if the thickness of the second mold (2) is reduced, it is possible to obtain a molded product having the same dimensional accuracy as when a thick and highly rigid mold is used.

  Here, the first mold (1) and the second mold (2) are preferably made of metal such as aluminum or iron. In particular, it is more preferable to apply aluminum that is lightweight and can exhibit rigidity and strength. Even if it is not made of metal, FRP molds such as GFRP and CFRP can be used in terms of light weight and high rigidity.

  The thickness of the second mold (2) is preferably 5 mm or more and 100 mm or less. A pressure resin line and a vacuum suction line are fixed to the inlet (21) and the suction port (22) with a jig, and resin is inserted between the outer surface of the first mold or the second mold and the line or jig. It is necessary to prevent air leaks. Here, when the second mold thickness is less than 5 mm, it is difficult to provide a screw hole having a sufficient depth on the second mold side when a method of fixing the jig with a screw is employed, It is not preferable to provide the injection port (21) or the suction port (22) in the second mold because the periphery of the portion where the screw hole is provided becomes brittle and may be damaged by repeated use. Moreover, when it is set as the structure which arrange | positions a 1st and 2nd bag-shaped pressurization body (3) (4) between a 2nd type | mold (2) and a 2nd type | mold support body (12), Since the mold (2) is supported only by the guide rail (31), if the mold thickness is less than 5 mm, bending and distortion are likely to occur when the second mold (2) is lifted, which is not preferable.

  On the other hand, since the weight increases as the thickness of the second mold increases, a larger capacity is required for a device for opening the entire second mold (2) including the second mold support (12), The apparatus configuration cannot be simplified sufficiently. Therefore, the thickness of the second mold is preferably 100 mm or less, and more preferably 50 mm or less.

  Here, a vacuum suction device (not shown) can be connected to the suction port (22). Connecting a vacuum suction device is preferable because it can help impregnation of the resin into the reinforcing fiber base disposed inside the cavity (7). If vacuum suction is continued during resin injection, an unimpregnated portion of the resin is less likely to occur, which is a more preferable embodiment. Here, the vacuum state is preferably 10 kPa or less, more preferably 1 kPa or less, when measured with an absolute pressure vacuum gauge. Furthermore, if the increase in pressure in the cavity after evacuation is interrupted at this time is 1 kPa or less in 5 minutes, there is little inflow of air into the mold after resin injection, and defects such as bubbles hardly remain on the surface. More preferable.

  A resin pressurizing device (not shown) can be connected to the injection port (21). As a form of the resin pressurizing apparatus, a pressurized container, an automatic resin mixing / injecting apparatus, or the like can be used. By using pressurized containers, it is possible to easily proceed with molding studies using various resins, but if the amount of resin used increases, it is necessary to increase the size of the pressurized container or to prepare multiple containers. The handling becomes complicated during the resin injection operation. On the other hand, if an automatic resin mixing / injecting device is used, a large amount of resin can be handled safely and easily, but more capital investment is required.

  The first mold support (11) and the second mold support (12) are not particularly limited, but are preferably made of iron in terms of rigidity.

  In addition, the first mold support (11) and the second mold support (12) are fastened by the hinge (16) shown in FIG. 2, as shown in FIG. Through holes (13) and (14) to be fixed at 15) are provided on a plurality of sides of the first mold support (11) and the second mold support (12), and the second mold support (12). Can move vertically to the first mold support (11). Here, the pin (15) is not particularly limited, but is preferably made of iron in terms of rigidity and strength.

  In this case, as shown in FIG. 8, when the second mold support (12) is provided with moving means such as casters, a carbon fiber base material is prepared at a place different from the molding work place, It can be moved after molding to facilitate removal of the FRP. Thus, by having a transfer mechanism for changing the relative position of the first mold (1) and the second mold (2), it is possible to secure a working space and easily arrange the base material inside the cavity. can do. As other transfer methods, it is also possible to adopt a method in which one mold moves along the rail and shifts in the lateral direction, or one mold is carried by the robot arm. is not.

  The material of the first bag-like pressure body (3) and the second bag-like pressure body (4) is not particularly limited as long as the pressurized fluid can be sealed. At that time, if a material produced by coating a reinforcing fiber such as glass fiber or aramid fiber with a resin is used, the strength and elongation are small, and when a pressurized fluid is sealed, the gap between the mold support and the mold (43 ) Is not stretched in the circumferential direction, and the pressing force to the mold is sufficiently exerted, which is suitable. In addition, if the lateral extension when filled with pressurized air is large, it may interfere with the guide rail (31) and the like, and the bag-like pressurized body may be damaged from the contact portion. Is preferred.

  As the fiber used for the reinforcing fiber base according to the present invention, carbon fiber, glass fiber, aramid fiber or the like can be used. Further, as the base material, it is possible to use a woven base material such as plain weave and twill, a so-called unidirectional base material in which reinforcing fibers arranged in one direction are stopped by wefts having a much smaller weight than reinforcing fibers. Yes, but not limited to this. Among them, it is preferable to use a carbon fiber woven base material that can efficiently increase the rigidity and strength by fiber reinforcement and can achieve weight reduction.

  The cavity (7) is preferably filled with a laminate in which a plurality of reinforcing fiber substrates are laminated. At this time, in the state where the second mold (2) covers the first mold (1), the separation distance between the first mold (1) and the second mold (2) is from the cavity (7). It is preferably larger than the maximum height of the protruding reinforcing fiber base (laminated body). When such an arrangement is made possible, when the relative position of the mold is changed, the laminate of the mold and the reinforcing fiber substrate (5) interferes, and the shape of the laminate of the reinforcing fiber substrate (5) is destroyed. Can be prevented. When the relative position of the mold is changed, if the shape of the laminate (5) of the reinforcing fiber base is broken, the position and orientation of the reinforcing fiber base in the molded product is different from the predetermined arrangement, and the mechanical characteristics And surface quality. In addition, if the reinforced fiber base material collapsed in a portion other than the cavity (7) is sandwiched, the mold does not completely close, causing resin leakage and air inflow, and causing the molded product to have an unimpregnated portion that is not impregnated with resin. Therefore, it becomes an unpreferable aspect.

  As the resin used in the present invention, a resin used for normal FRP RTM molding, such as an epoxy resin or a vinyl ester resin, can be used.

  The seal member (6) used in the present invention is not particularly limited in material and cross-sectional shape, but when a member having releasability from a resin such as silicone rubber is used, the seal member (6) is injected after molding. The resin is preferable because it can be used repeatedly without being integrated.

(Example)
A method for manufacturing a fiber-reinforced plastic molded product using the above-described FRP manufacturing apparatus will be described. In addition, this invention is not restrict | limited at all by this Example.

First, as shown in FIG. 3, 90 carbon fiber base materials (product number: CN1411CL, T-620S, 600 g / m ² , one-way base material) manufactured by Toray Industries, Inc. are matched to the dimensions of the cavity (7). Cut out and placed in the cavity (7). At this time, the laminate (5) of the carbon fiber base material protruded about 1 cm from the surface (17) on which the sealing member (6) of the first mold (1) was arranged.

  In this embodiment, both the first and second molds (1) and (2) are made of aluminum. Since the first mold (1) is provided with a cavity (7) having a depth of 50 mm and a heat medium flow path (not shown) and can be heated, the total thickness is 300 mm. On the other hand, the thickness of the second mold (2) is set to 10 mm because the necessary minimum rigidity is sufficient as described above.

  Subsequently, as shown in FIG. 4, the second mold support (12) and the second mold (2) are closed, and the first mold (1) is covered by the second mold (2). As described above, the first support (11) and the second support (12) were fixed using a pin (15). At this time, the second mold (2) floated about 3 cm from the first mold (1).

  Subsequently, 0.65 MPa of compressed air is sealed in the second bag-like pressure body (4) on the seal member (6), the molds are brought into close contact with each other, and a vacuum pump connected to the suction port (22) is used. Then, the cavity (7) was evacuated. At this time, when an absolute pressure vacuum gauge was connected to the inlet (21) side and the pressure in the cavity (7) was measured, it was 1.0 kPa. The increase was 1.0 kPa or less in 5 minutes.

  Subsequently, while maintaining the degree of vacuum in the cavity (7), a route for feeding the resin provided in the resin pressurizing apparatus instead of the absolute pressure gauge is connected to the injection port (21), and then removed in advance. Resin with a mechanism that adjusts the internal resin pressure by mixing foamed matrix resin (main agent: RIMR135, curing agent: RIMH137, manufactured by Momentive) at a ratio of 100: 30. It placed in a pressurizing device and the lid of the resin pressurizing device was fixed. At this time, the resin injection path was closed.

  After completing the above preparation, first, the resin pressure in the resin pressurizing apparatus was increased to 0.5 MPa.

  Subsequently, the injection path is opened, resin injection into the cavity (7) is started, and the air in the first bag-shaped pressurizing body (3) on the cavity (7) is increased to 0.5 MPa. It was allowed to stand for a predetermined time.

  After confirming that the resin began to be discharged from the vacuum path connected to the suction port (22), the vacuum path was closed to prevent the resin from flowing out.

  After confirming that the amount of the resin in the resin pressurizing apparatus was moved into the cavity (7) by a specified amount, the resin injection path was also closed. At this time, pressurization in the resin pressurizer was also stopped.

  Thereafter, the resin was allowed to stand at room temperature for 24 hours while maintaining the air pressure in the first bag-like pressure body (3) and the second bag-like pressure body (4) in order to cure the resin.

  After the resin in the cavity (7) is cured, the first and second bag-like pressure bodies (3) and (4) are depressurized, the pin (15) is removed, and the second support body (12). Was lifted to open the second mold (2). When the molded product was taken out from the cavity (7), a cavity-shaped CFRP was obtained.

  When a cross section of the obtained molded product was cut and observed with the naked eye and a digital microscope (manufactured by Keyence Corporation) at a magnification of 500 times, no voids and no impregnation were observed. Further, when the thickness of the molded product was measured at intervals of 200 mm over the longitudinal direction of the cavity (7) shown in FIG. 2, the thickness of the molded product was 50 ± 0.3 mm, and the mold surface was transferred to the surface of the molded product. As a result, it was smooth and a good molded product was obtained in terms of dimensions and appearance.

(Comparative example)
In the comparative example, in the same apparatus configuration as that of the example, as shown in FIG. 6, the bag-like pressurizing body is arranged as an integral part covering the cavity peripheral edge from the sealing member (6) to the upper part of the cavity (7). Yes.

Subsequently, 90 carbon fiber base materials (product number: CN1411CL, T-620S, 600 g / m ² , unidirectional base material)) manufactured by Toray Industries, Inc. were matched to the shape of the cavity (7) in the same manner as in the examples. Cut out and placed in a mold.

  Using the pin (15) with the second mold support (12) and the second mold (2) closed and the first mold (1) covered by the second mold (2) The first mold support (11) and the second mold support (12) were fixed. Thereafter, 0.65 MPa of compressed air is injected into the integrated bag-like pressurizing body (51) on the second mold (2), and the first mold (1) and the second mold (2) are brought into close contact with each other. At the same time, the vacuum pump connected to the suction port (22) was activated to evacuate the cavity (7). At this time, the degree of vacuum in the mold was 1.0 kPa when measured using an absolute pressure gauge, and when the pressure was measured while evacuation was interrupted, the amount of increase in internal pressure was 2. It was 0 kPa or more.

  Subsequently, the same matrix resin that had been degassed in the same manner as in the example was mixed in the above-described ratio, placed in the above-described resin pressurizing apparatus, and the lid of the resin pressurizing apparatus was fixed.

  After the above preparation was completed, first, the resin pressure of the resin pressurizing apparatus was increased to 0.5 MPa.

  Subsequently, the injection path was opened and injection of resin into the mold was started.

  After confirming that the resin began to be discharged from the evacuation path, the evacuation path was closed to prevent the resin from flowing out.

  Here, before the resin amount in the resin pressurizing apparatus moved into the mold by a specified amount, the operation was interrupted because the resin leaked from the seal portion.

  In this configuration, when the pressure of the bag-like pressurizing body is increased so that the sealing performance can be sufficiently exerted, the cavity (7) is pressurized with the same pressure, but the cavity (7) is filled with resin. Since the reaction force that supports the second mold (2) is small until the second mold (2) is warped toward the cavity (7), the second mold (6) on the seal member (6) ( 2) is lifted relatively, and it is considered that the sealing effect is lowered.

  The present invention relates to a fiber reinforced plastic manufacturing apparatus using an RTM molding method, and in particular, can be used as a fiber reinforced plastic manufacturing apparatus capable of manufacturing a large structural member having a length of several meters to several tens of meters. Examples of large structural members that can be used include large, long, and thick primary structural members such as windmill wings, aircraft wing girders, and building columns, but the scope of application is not limited thereto.

DESCRIPTION OF SYMBOLS 1 1st type | mold 2 2nd type | mold 3 1st bag-shaped pressurization body 4 2nd bag-shaped pressurization body 5 Reinforcement fiber base material 6 Seal member 7 Cavity 11 1st type | mold support body 12 2nd type | mold Support body 13 Insertion hole 14 Insertion hole 15 Pin 16 Hinge 17 Surface 21 on which the first type seal member is disposed Inlet 22 Suction port 31 Guide rail 41 In a state where the first mold is covered with the second mold The distance 42 between the second mold and the surface on which the seal member of the first mold is disposed 42 The distance 43 at which the laminate of the reinforcing fiber base protrudes from the surface on which the seal member of the first mold is disposed Gap 51 between first mold support and first mold Bag-shaped pressurizing body in one piece

Claims (12)

  An FRP manufacturing apparatus comprising a first mold having a cavity for disposing a reinforcing fiber substrate and a second mold covering the cavity, and comprising at least one suction port and a resin injection port connected to the cavity. A support surrounding the periphery of the first mold and the second mold, and the first mold and / or the support and the second mold between the first mold and the second mold. A plurality of bag-shaped pressurizing bodies that closely contact one mold and the second mold, wherein the bag-shaped pressurizing body is a surface forming the cavity of the first mold or the cavity of the second mold At least one first bag-like pressurizing body that pressurizes a range including the cavity, and at least one second pressurizing a seal member provided at the peripheral edge of the cavity. At least a bag-like pressurizing body, And Jo pressure body and the second bag-shaped pressure body is, FRP manufacturing apparatus characterized by respective adjustable pressing force separately.   The pressure in the first bag-shaped pressurizing body is set to a pressure equal to or higher than the injection pressure of the resin injected into the first mold, and the pressure in the second bag-shaped pressurizing body is set to the first pressure. The FRP manufacturing apparatus according to claim 1, wherein the pressure is higher than the pressure in the bag-like pressurized body.   The FRP manufacturing apparatus according to claim 1 or 2, wherein the thickness of the second mold is 5 mm or more and 100 mm or less.   The FRP manufacturing apparatus according to any one of claims 1 to 3, wherein a vacuum suction device is connected to the suction port.   The FRP manufacturing apparatus according to claim 1, wherein a resin pressurizing device is connected to the resin injection port.   6. The transfer mechanism according to claim 1, further comprising a transfer mechanism that is fixed to at least one of the first mold and the support and changes a relative position between the first mold and the second mold. The FRP manufacturing apparatus according to the above.   In a state where the second mold covers the first mold, the separation distance between the first mold and the second mold is larger than the maximum height at which the reinforcing fiber base accommodated in the cavity protrudes from the cavity. The FRP manufacturing apparatus according to any one of claims 1 to 6, wherein: An FRP manufacturing apparatus comprising a first mold having a cavity for disposing a reinforcing fiber base and a second mold covering the cavity, and having at least one suction port and a resin injection port connected to the cavity is used. FRP manufacturing method
A support body surrounding the first mold and the second mold, and the first mold and / or the first mold and / or the second mold between the first mold and the first mold; A plurality of bag-shaped pressurizing bodies that closely contact the mold and the second mold are provided, and the bag-shaped pressurizing bodies are in contact with a surface forming the cavity of the first mold or the cavity of the second mold. At least one first bag-like pressurizing body that pressurizes a range including the cavity on a surface opposite to the surface, and at least one second bag that pressurizes a seal member provided at a peripheral edge of the cavity A pressure member,
After disposing the reinforcing fiber substrate in the cavity, the second mold is covered with the second mold, and the second mold is capable of individually adjusting the pressurizing force, and the first bag-like pressure body and the second FRP manufacturing method characterized in that after pressurizing with a bag-shaped pressurizing body, impregnating resin into a reinforcing fiber base from a resin inlet, curing the resin, and then taking out a fiber-reinforced composite material molded product from the cavity .   A second bag-shaped pressurizing body that pressurizes the first bag-shaped pressurizing body that pressurizes the range including the cavity above the injection pressure of the resin to be injected and pressurizes the seal member provided at the peripheral edge of the cavity The FRP manufacturing method according to claim 8, wherein the pressure is higher than the pressure of the first bag-like pressurizing body.   The FRP manufacturing method according to claim 8 or 9, wherein the inside of the cavity is vacuumed and then the resin is injected into the cavity at atmospheric pressure.   The method for producing FRP according to claim 10, wherein the resin is further injected under pressure after starting to inject the resin under atmospheric pressure.   The method for producing FRP according to any one of claims 8 to 11, wherein the resin is injected under pressure at a pressure higher than atmospheric pressure.

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