JP2011116076A - Apparatus and method for manufacturing fiber-reinforced plastic molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing a fiber-reinforced plastic molding that can improve productivity and product accuracy. <P>SOLUTION: A molding die 2 includes a die body 11 and an elastic cover body 12 provided at the die body 11 and having a molding surface 1. Passages 16 are provided in the elastic cover body 12. The cover body 12 is elastically deformed by a change of pressure in the passages 16. The molding surface 1 is covered with a bag film 3. A space between the molding surface 1 and the bag film 3 is reducible in pressure. The fiber-reinforced plastic molding is manufactured between the molding surface 1 and the bag film 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for manufacturing a fiber-reinforced plastic molded body for manufacturing a fiber-reinforced plastic molded body in a reduced pressure environment, and a method for manufacturing a fiber-reinforced plastic molded body.

  Fiber Reinforced Plastics (FRP) is attracting attention in various industrial fields as a lightweight and high-strength material. In recent years, vacuum impregnation molding (VaRTM: Vacuum assist Resin Transfer Molding) has been adopted in which fiber-reinforced plastics are molded under reduced pressure by vacuum suction to produce relatively large fiber-reinforced plastic moldings at low cost. It is being done. In the vacuum impregnation molding method, the fiber placed in the mold is covered with a bag film, the bag film is vacuum sucked, a liquid resin is injected into the bag film, the resin is impregnated into the fiber and cured, This is a method for obtaining a fiber-reinforced plastic molded body (see, for example, Patent Document 1).

  Conventionally, in order to facilitate removal of a fiber reinforced plastic molded body from a mold, a manufacturing apparatus for a fiber reinforced plastic molded body in which a through hole is provided in the mold and a bolt for pushing up the molded body is screwed into the through hole has been proposed. ing. The through hole is sealed with a sealing material. The bolt is screwed into the molding die while being rotated, thereby pushing up the molded body through the sealing material (see, for example, Patent Document 2).

JP-A-60-83826 JP 2007-45005

  However, in the apparatus for manufacturing a fiber-reinforced plastic molded body disclosed in Patent Document 2, it takes time to turn the bolt, and the productivity of the fiber-reinforced plastic molded body cannot be improved. Moreover, since the through-hole is sealed with the sealing material, a level difference of the sealing material remains on the surface in contact with the mold of the fiber-reinforced plastic molded body. Moreover, the airtightness between the sealing material and the through hole may be deteriorated.

  The present invention has been made to solve the above-described problems, and can provide an apparatus for manufacturing a fiber-reinforced plastic molded body capable of improving productivity and improving product accuracy, and It aims at obtaining the manufacturing method of a fiber reinforced plastic molding.

  An apparatus for manufacturing a fiber-reinforced plastic molded body according to the present invention includes a mold body, an elastic coating body provided on the mold body and having a molding surface, and a flow path is provided in the elastic coating body. A molding die in which the elastic covering is elastically deformed by a change in pressure, and a bag film that covers the molding surface and in which the space between the molding surface can be decompressed, and fiber-reinforced plastic molding between the molding surface and the bag film Manufacture the body.

  The method for producing a fiber-reinforced plastic molded body according to the present invention includes a fiber placement step of placing fibers on a molding surface of an elastic covering provided on a mold body, a cover step of covering the fibers and the molding surface together with a bag film, Depressurization step to depressurize the space between the molding surface and the bag film, and after the depressurization step, inject the liquid resin into the space between the molding surface and the bag film and impregnate the fiber with the resin, impregnation into the fiber The molded resin is cured to increase the pressure in the flow path provided in the elastic coating after the molding process and the molding process for manufacturing a fiber reinforced plastic molded body that is a molded body of resin containing fibers. A pressure increasing step for deforming the molding surface by expanding the path is provided.

  In the apparatus for manufacturing a fiber-reinforced plastic molded body according to the present invention, the flow path is provided in the elastic covering body having the molding surface, and the elastic covering body is elastically deformed by a change in pressure in the flow path. The molding surface can be deformed only by changing the pressure, and the fiber-reinforced plastic molding can be easily removed from the molding surface. Thereby, the effort at the time of removing a fiber reinforced plastic molding from a molding surface can be reduced, and the improvement of the productivity of a fiber reinforced plastic molding can be aimed at. Further, since the elastic covering itself is elastically deformed, it is possible to eliminate the structure in which the opening of the through hole is formed on the molding surface and the structure in which the opening of the through hole is closed with the sealing material. Thereby, it can prevent that the level | step difference of a sealing material arises on a molding surface, and the deterioration of the airtightness in the sealed space between a molding surface and a bag film can also be prevented. Accordingly, it is possible to improve the product accuracy of the fiber-reinforced plastic molded body.

  In the method for manufacturing a fiber-reinforced plastic molded body according to the present invention, the molding surface is deformed by increasing the pressure in the flow path provided in the elastic covering and expanding the cross section of the flow path. The fiber reinforced plastic molding can be easily removed from the molding surface simply by increasing the pressure. Thereby, the effort at the time of removing a fiber reinforced plastic molding from a molding surface can be reduced, and the improvement of the productivity of a fiber reinforced plastic molding can be aimed at. Further, since the elastic covering itself is elastically deformed, it is possible to eliminate the structure in which the opening of the through hole is formed on the molding surface and the structure in which the opening of the through hole is closed with the sealing material. Thereby, it can prevent that the level | step difference of a sealing material arises on a molding surface, and the deterioration of the airtightness in the sealed space between a molding surface and a bag film can also be prevented. Accordingly, it is possible to improve the product accuracy of the fiber-reinforced plastic molded body.

It is sectional drawing which shows the manufacturing apparatus of the fiber reinforced plastic molding by Embodiment 1 of this invention. It is a perspective view which shows a state when the type | mold main body of FIG. 1 is seen from the downward direction. It is a perspective view which shows a state when the type | mold main body of FIG. 1 is seen from upper direction. It is sectional drawing which shows the type | mold main body of FIG. It is sectional drawing which shows the state by which the elastic tube was fitted by the groove | channel of FIG. It is sectional drawing which shows the state by which the type | mold main body of FIG. 5 was coat | covered with the elastic film.

Embodiment 1 FIG.
1 is a cross-sectional view showing an apparatus for manufacturing a fiber-reinforced plastic molded body according to Embodiment 1 of the present invention. In the figure, an apparatus for producing a fiber-reinforced plastic molded body includes a molding die 2 provided with a molding surface 1 having high releasability to resin, a bag film 3 covering the molding surface 1, and a molding surface 1 and a bag film 3. It has a peel ply 4 and a flow medium 5 arranged between them.

  At the edge of the molding surface 1, a sealing material 6 is provided for bringing the molding surface 1 and the bag film 3 into close contact with each other. Therefore, a sealed space 7 surrounded by the sealing material 6 is formed between the molding surface 1 and the bag film 3.

  A suction tube 8 for decompressing the sealed space 7 and an injection tube 9 for supplying resin onto the molding surface 1 are passed through the sealing material 6. The opening ends of the suction tube 8 and the injection tube 9 are inserted into the sealed space 7. The decompression of the sealed space 7 is performed by sucking the gas in the sealed space 7 to the outside through the suction pipe 8. The suction of the gas in the sealed space 7 is performed by the operation of a vacuum pump (not shown). The resin is supplied onto the molding surface 1 by injecting a liquid resin stored in a resin tank (not shown) into the sealed space 7 through the injection tube 9. The resin supplied onto the molding surface 1 is a thermosetting resin. In this example, the resin supplied onto the molding surface 1 is a room temperature curable resin capable of room temperature curing.

  The suction pipe 8 is provided with a suction pipe valve (not shown), and the injection pipe 9 is provided with an injection pipe valve (not shown). The pipe line of the suction pipe 8 is opened when the suction pipe valve is opened, and is blocked when the suction pipe valve is closed. The pipe line of the injection pipe 9 is opened when the injection pipe valve is opened, and is blocked when the injection pipe valve is closed.

  The resin is supplied onto the molding surface 1 while the sealed space 7 is decompressed. The resin supplied on the molding surface 1 is impregnated in the fibers 10 arranged on the molding surface 1. On the molding surface 1, the resin impregnated in the fibers 10 is cured, so that a molded body of the resin including the fibers 10 is completed as a fiber reinforced plastic molded body.

  As the fiber 10, for example, carbon fiber, glass fiber, Zylon fiber, Kepler fiber or the like is used. In this example, a carbon fiber that can realize both lightness and high strength is used as the fiber 10. Moreover, as resin injected into the sealed space 7, for example, vinyl ester resin, polyester resin, epoxy resin, cyanate resin, phenol resin, polyimide resin, or the like is used. In this example, a vinyl ester resin that can be cured at room temperature and has a low viscosity and excellent impregnation property is used as a resin that is injected into the sealed space 7.

  The peel ply 4 is a release cloth having a high releasability from resin. The molding surface 1 and the fibers 10 are covered with a peel ply 4. The resin injected into the sealed space 7 is mainly supplied between the peel ply 4 and the molding surface 1. The flow media 5 is stacked on the peel ply 4. The flow of the resin injected into the sealed space 7 is promoted by the flow media 5.

  The mold 2 includes a mold body 11 and an elastic covering body 12 provided on the outer periphery of the mold body 11 and having a molding surface 1. The shape of the mold 2 is a rectangular parallelepiped shape (box shape) with the lower surface opened. In addition, each heat-resistant temperature of the shaping | molding die 2, the bag film 3, the peel ply 4, the flow media 5, the sealing material 6, the suction pipe 8, and the injection pipe 9 is higher than the curing temperature and the maximum heat generation temperature of the resin.

  FIG. 2 is a perspective view showing a state when the mold body 11 of FIG. 1 is viewed from below. FIG. 3 is a perspective view showing a state when the mold body 11 of FIG. 1 is viewed from above. The mold main body 11 is a box-shaped member opened downward. The mold body 11 is made of a material having higher rigidity than the elastic covering body 12. The material of the mold body 11 is preferably a material that is lightweight, easy to process, and has high thermal conductivity (for example, an aluminum alloy).

  An upper surface and four side surfaces are formed on the outer periphery of the mold body 11. In addition, a single groove 13 formed on each of the upper surface and each side surface is provided on the outer peripheral portion of the mold body 11. That is, the groove 13 is a one-stroke groove that goes around each of the upper surface and each side surface of the mold body 11.

  Each of the upper surface and each side surface of the mold body 11 is provided with a lateral groove portion 13a that is arranged in parallel with a distance from each other, and a connection groove portion 13b that connects between the ends of the adjacent lateral groove portions 13a. The groove 13 is constituted by each lateral groove portion 13a and each connection groove portion 13b. Each lateral groove portion 13a and each connection groove portion 13b are successively connected to form one groove 13 that does not branch.

  As shown in FIG. 1, the elastic covering 12 includes an elastic coating 14 covering the upper surface and each side surface of the mold body 11, an elastic tube (elastic tube) 15 provided on the elastic coating 14 and accommodated in the groove 13. have.

  The elastic tube 15 is a single tube that is disposed along the groove 13 and that is not branched. A flow path 16 is formed in the elastic tube 15 along the length direction of the elastic tube 15. That is, the flow path 16 is provided in the elastic covering body 12. The elastic tube 15 is made of a material that can be elastically deformed by a change in pressure in the flow path 16. In this example, the elastic tube 15 is made of silicone resin. In this example, the cross-sectional shapes of the elastic tube 15 and the flow path 16 are rectangular. A fluid whose temperature can be adjusted flows in the flow path 16.

  The elastic coating 14 is made of a material that can be elastically deformed by elastic deformation of the elastic tube 15. In this example, the material of the elastic coating 14 is a silicone resin. That is, the material constituting each of the elastic coating 14 and the elastic tube 15 is the same material. The hardness of the elastic coating 14 and the elastic tube 15 is preferably about 35 (JIS-A).

  An outer surface (exposed surface) of the elastic coating 14 is formed on the elastic coating 12 as the molding surface 1. The molding surface 1 is deformed by elastic deformation of the elastic coating 14. The fiber-reinforced plastic molded body molded on the molding surface 1 is easily peeled off from the molding surface 1 due to deformation of the molding surface 1. In this example, since the elastic coating 14 covers the upper surface and each side surface of the mold body 11, a casing having four inner side surfaces and a bottom surface is molded on the molding surface 1 as a fiber reinforced plastic molded body. .

  Next, a method for manufacturing the mold 2 will be described. 4 is a cross-sectional view showing the mold body 11 of FIG. 1, FIG. 5 is a cross-sectional view showing a state in which the elastic tube 15 is fitted in the groove 13 of FIG. 4, and FIG. It is sectional drawing which shows the coat | covered state. First, the grooves 13 are formed on the upper surface and each side surface of the box-shaped member, and the mold body 11 as shown in FIG. 4 is manufactured. Thereafter, the elastic tube 15 is accommodated in the groove 13 as shown in FIG. Thereafter, in a state where the elastic tube 15 is housed in the groove 13, a silicone resin is applied and cured from the outside of the mold body 11, thereby producing an elastic coating 14. Thereby, the mold 2 as shown in FIG. 6 is completed.

  Next, the manufacturing method of a fiber reinforced plastic molding is demonstrated. When manufacturing a fiber reinforced plastic molded body, as shown in FIG. 1, first, the fibers 10 are arranged on the molding surface 1 of the mold 2 (fiber arrangement step).

  Thereafter, the fiber 10 and the molding surface 1 are covered with the peel ply 4, and the flow media 5 and the bag film 3 are sequentially stacked on the peel ply 4. That is, the fibers 10 and the molding surface 1 are collectively covered with the peel ply 4, the flow media 5, and the bag film 3 that are sequentially stacked (cover process).

  Thereafter, the opening ends of the suction tube 8 and the injection tube 9 are inserted between the molding surface 1 and the bag film 3, and the space between the molding surface 1 and the bag film 3 is sealed with a sealing material 6. Thereby, the sealed space 7 is formed (sealing process).

  Thereafter, the suction pipe 8 is connected to a vacuum pump and the injection pipe valve is closed. Thereafter, the vacuum pump is operated to depressurize the sealed space 7 (decompression step).

  Thereafter, the liquid resin is injected into the sealed space 7 through the injection tube 9 by opening the injection tube valve while the sealed space 7 is decompressed. As a result, the resin is impregnated in the fibers 10 arranged on the molding surface 1. At this time, a fluid having a temperature for suppressing the curing of the resin (that is, a temperature for suppressing an increase in the viscosity of the resin) is caused to flow in the flow path 16. Thereby, hardening of the resin injected into the sealed space 7 is suppressed, and impregnation of the resin into the fibers 10 is promoted (impregnation step).

  After the fiber 10 has been impregnated with the resin, the temperature of the fluid flowing in the flow path 16 is increased to a temperature that promotes the curing of the resin. Thereby, the resin impregnated in the fiber 10 is cured, and a fiber-reinforced plastic molded body is molded (molding process).

  Thereafter, the temperature of the fluid flowing in the flow path 16 is lowered to cool the fiber reinforced plastic molded body. Thereafter, the bag film 3, the flow media 5, the peel ply 4, the sealing material 6, the suction pipe 8 and the injection pipe 9 are removed from the mold 2 (disassembly step).

  Thereafter, a compression pump is attached to the inlet of the elastic tube 15 and the outlet of the elastic tube 15 is closed. Thereafter, the compression pump is operated to increase the pressure in the flow path 16. Thereby, the cross section of the flow path 16 expands, and the elastic tube 15 and the elastic coating 14 are elastically deformed. The molding surface 1 is deformed as the elastic coating 14 is elastically deformed. Thereby, a fiber reinforced plastic molding becomes easy to remove | deviate from the molding surface 1 (pressure | voltage rise process).

  Thereafter, the fiber reinforced plastic molded body is removed from the molding surface 1 to complete the production of the fiber reinforced plastic molded body.

  Next, a fiber-reinforced plastic molded body was actually manufactured. The mold 2 was produced by using an aluminum mold body 11 having a width dimension of 500 mm, a depth dimension of 500 mm, and a height dimension of 300 mm. A groove 13 having a width dimension of 10 mm and a depth dimension of 10 mm was provided on the outer peripheral portion of the mold body 11. Furthermore, the space | interval between each horizontal groove part 13a provided in each of the upper surface and each side surface of the type | mold main body 11 was 50 mm.

  The elastic tube 15 was a silicone resin tube having a rectangular cross section with a vertical dimension and a horizontal dimension of 10 mm. Thereby, the dimension of the elastic tube 15 was made into the dimension which fits in the groove | channel 13 without gap. The cross-sectional shape of the flow path 16 was a rectangular shape with a vertical dimension and a horizontal dimension of 8 mm each. The elastic coating 14 was produced by applying and curing a silicone resin (manufactured by Shin-Etsu Silicone, KE1206, hardness 35 (JIS-A)) to the outer periphery of the mold body 11 to a thickness of 0.5 mm.

  When manufacturing a fiber reinforced plastic molded body, the fiber 10 (T300 carbon fiber plain weave cloth made by Toray Industries, Inc.) is placed on the molding surface 1, and the peel ply 4 (AirTech made by BLEEDER LEASE-B, heat resistant 232 ° C) , Flow media 5 (AirTech, GREEN FROW 75, heat resistant 161 ° C), and bag film 3 (AirTech, WL7400, heat resistant 204 ° C) are stacked in this order, and a tube made of Teflon (registered trademark, polytetrafluoroethylene) (outside The suction tube 8 and the injection tube 9 manufactured with a diameter of 9.52 mm, an inner diameter of 6.35 mm, and a heat resistance of 260 ° C. are inserted into the space between the molding surface 1 and the bag film 3, and the sealing material 6 (from AirTech) , AT-200Y, heat resistant 204 ° C.) to form a sealed space 7.

  Thereafter, the sealed space 7 was decompressed by vacuum suction through the suction tube 8. Thereafter, liquid resin (made by Showa Polymer, vinyl ester resin lipoxy R806 (100 parts by weight), peroxide 328E (1 part by weight) and cobalt octylate (0.2 parts by weight) is passed through the injection tube 9 into the sealed space 7. Of mixed resin). As a result, the fiber 10 was impregnated with the resin. At this time, 30 ° C. water was allowed to flow into the flow path 16 of the elastic tube 15 as a fluid having a temperature for suppressing the curing of the resin.

  After the impregnation of the resin into the fibers 10 was completed, 80 ° C. water was allowed to flow into the flow path 16 as a fluid having a temperature that promotes the curing of the resin. This state was continued for about 30 minutes, and after confirming that the resin was cured, water at 10 ° C. was flowed into the flow path 16 as a fluid for cooling. As a result, a box-shaped fiber-reinforced plastic molded body was molded on the molding surface 1.

  Thereafter, the bag film 3, the flow media 5, the peel ply 4, the sealing material 6, the suction pipe 8 and the injection pipe 9 are removed from the mold 2, a compression pump is attached to the inlet of the elastic tube 15, and the outlet of the elastic tube 15 is closed. It is.

Thereafter, the compression pump was operated to intermittently apply 5 kgf / cm ² of compressed air, whereby the elastic tube 15 was repeatedly expanded and contracted. Thereafter, the fiber-reinforced plastic molded body was removed from the molding surface 1 to complete the production of the fiber-reinforced plastic molded body. The fiber-reinforced plastic molded body could be easily removed from the molding surface 1.

  In such an apparatus for manufacturing a fiber-reinforced plastic molded body, the flow path 16 is provided in the elastic covering body 12 having the molding surface 1, and the elastic covering body 12 is elastically deformed by a change in pressure in the flow path 16. The molding surface 1 can be deformed only by changing the pressure in the flow path 16, and the fiber-reinforced plastic molded body can be easily removed from the molding surface 1. Thereby, the effort at the time of removing a fiber reinforced plastic molding from the molding surface 1 can be reduced, and the productivity of a fiber reinforced plastic molding can be improved. Further, since the elastic covering 12 itself is elastically deformed, it is possible to eliminate a structure in which the opening of the through hole is formed on the molding surface 1 or a structure in which the opening of the through hole is closed with a sealing material. Thereby, it can prevent that the level | step difference of a sealing material arises on the molding surface 1, and the deterioration of the airtightness in the sealed space 7 between the molding surface 1 and the bag film 3 can also be prevented. Accordingly, it is possible to improve the product accuracy of the fiber-reinforced plastic molded body.

  Moreover, since the shape of the shaping | molding die 2 is made into the box shape, the shape of a fiber reinforced plastic molding can be made into a box shape. Thus, even if the shape of the fiber reinforced plastic molded body is a box shape that is difficult to remove from the molding surface 1, the fiber reinforced plastic molded body can be easily removed from the molding surface 1 simply by changing the pressure in the flow path 16. Can do.

  In addition, since the fluid flows in the flow path 16 and the temperature of the fluid can be adjusted, the resin used for manufacturing the fiber-reinforced plastic molded body by adjusting the temperature of the fluid. It is possible to control the viscosity. Thereby, suppression and acceleration | stimulation of resin hardening can be performed and the shortening of the manufacturing time of a fiber reinforced plastics molded object can be aimed at.

  Further, in such a method for producing a fiber-reinforced plastic molded body, the molding surface 1 is deformed by increasing the pressure in the flow path 16 provided in the elastic covering 12 and expanding the cross section of the flow path 16. Therefore, the fiber-reinforced plastic molded body can be easily removed from the molding surface 1 simply by increasing the pressure in the flow path 16. Thereby, the effort at the time of removing a fiber reinforced plastic molding from the molding surface 1 can be reduced, and the productivity of a fiber reinforced plastic molding can be improved. Further, since the elastic covering 12 itself is elastically deformed, it is possible to eliminate a structure in which the opening of the through hole is formed on the molding surface 1 or a structure in which the opening of the through hole is closed with a sealing material. Thereby, it can prevent that the level | step difference of a sealing material arises on the molding surface 1, and the deterioration of the airtightness in the sealed space 7 between the molding surface 1 and the bag film 3 can also be prevented. Accordingly, it is possible to improve the product accuracy of the fiber-reinforced plastic molded body.

  Further, in the impregnation step of impregnating the fiber 10 with the resin, a fluid having a temperature that suppresses the curing of the resin is caused to flow through the flow path 16, so that it is difficult to cure the resin when the fiber 10 is impregnated. Thereby, the impregnation of the resin into the fiber 10 can be promoted. Therefore, it is possible to shorten the impregnation time of the resin with respect to the fiber 10 and to impregnate the fiber 10 with the resin more uniformly.

  Further, in the molding step of curing the resin impregnated in the fiber 10, a fluid having a temperature that promotes the curing of the resin is caused to flow through the flow path 16, so that the resin can be cured quickly. Thereby, shortening of the manufacturing time of a fiber reinforced plastic molding can be aimed at. Further, since self-heating of the resin can be induced, heat treatment such as after-curing can be eliminated, and the manufacturing time of the fiber-reinforced plastic molded product can be further shortened.

  Moreover, since the resin supplied to the molding surface 1 is a room temperature curing resin, the resin can be cured at room temperature. Usually, when the resin supplied to the molding surface 1 is a room temperature curing resin, in order to easily remove the fiber-reinforced plastic molded body from the molding surface 1, it is possible to use the difference in thermal expansion coefficient between the resin and the molding die 2. Even in this case, it is possible to easily remove the fiber-reinforced plastic molded body from the molding surface 1 only by increasing the pressure in the flow path 16.

  Moreover, since the fiber 10 is a carbon fiber, the weight reduction and high intensity | strength of a fiber reinforced plastic molding can be achieved.

  In the above example, the shape of the mold 2 is a box shape, but is not limited thereto, and the shape of the mold 2 may be, for example, a plate shape or a spherical shape.

  In the above example, in the impregnation step, a fluid having a temperature that suppresses the curing of the resin is caused to flow in the flow path 16, but the fiber 10 is impregnated with the resin without flowing the fluid in the flow path 16. If it is possible, the fluid does not have to flow in the flow path 16 in the impregnation step.

  In the above example, in the molding process, a fluid having a temperature that promotes curing of the resin is caused to flow in the flow path 16. However, if the resin is cured at room temperature, the fluid is flowed in the molding process in the molding process. It does not have to flow inside.

  In the above example, water is used as the fluid that flows in the flow path 16, but the present invention is not limited to this, and a liquid or gas other than water may be used as the fluid that flows in the flow path 16. Good. In the case where the mold 2 is heated to 100 ° C. or higher in order to cure the resin, it is preferable to use, for example, silicon oil or the like as the fluid flowing in the flow path 16.

  In the above example, the groove 13 provided on the outer peripheral portion of the mold body 11 is a single groove that does not branch, but the groove having a branch portion may be used as the groove 13. However, in order to uniformly expand the entire elastic tube 15 when the compressed air is applied, it is preferable to provide a single groove 13 with one inlet and one outlet at the outer periphery of the mold body 11.

  In the above example, the elastic coating 14 and the elastic tube 15 are made of silicone resin. However, the invention is not limited to this, and the elastic coating 14 and the elastic tube 15 may be made of, for example, urethane resin.

  In the above example, the flow path 16 is provided in the elastic tube 15, but the flow path 16 may be provided in the elastic coating 12, so the flow path 16 is provided in the elastic coating 14. May be. In this case, the groove 13 and the elastic tube 15 may be omitted.

  DESCRIPTION OF SYMBOLS 1 Molding surface, 2 Mold, 3 Bag film, 10 Fiber, 11 type | mold main body, 12 Elastic covering, 16 flow path.

Claims (7)

A mold body and an elastic covering provided on the mold body and having a molding surface; a flow path is provided in the elastic covering body; and the elastic covering is elastically deformed by a change in pressure in the flow path. And a bag film that covers the molding surface and that allows the space between the molding surface to be decompressed,
An apparatus for manufacturing a fiber-reinforced plastic molded body for manufacturing a fiber-reinforced plastic molded body between the molding surface and the bag film.   2. The apparatus for producing a fiber-reinforced plastic molded body according to claim 1, wherein the shape of the molding die is a box shape. A fiber placement step of placing fibers on the molding surface of the elastic covering provided in the mold body;
A cover step for covering the fibers and the molding surface together with a bag film;
A decompression step of decompressing a space between the molding surface and the bag film;
After the decompression step, an impregnation step of injecting a liquid resin into the space between the molding surface and the bag film and impregnating the resin with the fiber,
The resin impregnated in the fiber is cured to form a fiber-reinforced plastic molded body that is a molded body of the resin containing the fiber, and after the molding process, provided in the elastic coating A method for producing a fiber-reinforced plastic molded body, comprising a pressure increasing step of deforming the molding surface by increasing the pressure in the flow path to expand the flow path.   The method for producing a fiber-reinforced plastic molded body according to claim 3, wherein, in the impregnation step, a fluid having a temperature that suppresses curing of the resin is caused to flow in the flow path.   5. The method for producing a fiber-reinforced plastic molded body according to claim 3, wherein in the molding step, a fluid having a temperature that promotes curing of the resin is caused to flow in the flow path.   The method for producing a fiber-reinforced plastic molded body according to any one of claims 3 to 5, wherein the resin is a room temperature curable resin.   The said fiber is a carbon fiber, The manufacturing method of the fiber reinforced plastic molding of any one of Claim 3 thru | or 6 characterized by the above-mentioned.

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