JP2015196256A - Method of producing fiber-reinforced resin joint, fiber-reinforced resin joint and end surface mold used in production of fiber-reinforced resin joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of producing fiber-reinforced resin joint having high pressure resistance, a fiber-reinforced resin joint and an end surface mold used in production of a fiber-reinforced resin joint.SOLUTION: A method of producing a fiber-reinforced resin molding 100 comprises attaching a lid member 600 to the end surface of PVC-made piping 130, laminating a fiber-reinforced resin layer 140 on the PVC-made piping 130 and carrying out a pressure reduction step of covering the PVC-made piping attached with the lid member 600 with a film bag 880 and evacuating the inside of the film bag 880 to impregnate the wound reinforcing fiber material with a matrix resin to form a fiber-reinforced resin layer 150.

Description

  The present invention relates to a method for manufacturing a fiber reinforced resin joint, a fiber reinforced resin joint, and an end face mold used for manufacturing a fiber reinforced resin joint.

  Fiber reinforced resin molded products are used in various industrial fields because they are lightweight and have high strength. Recently, attention has been focused on an infusion molding method having excellent environmental considerations as a method for producing a fiber-reinforced resin molded product.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-255472) discloses an infusion molding that can be performed easily and accurately and can be commercialized without end treatment of the obtained molded product. A mold and a method for producing a cylindrical fiber reinforced resin molded article using the mold are disclosed.

  A mold for infusion molding described in Patent Document 1 includes a cylindrical or columnar body mold having a mold body portion whose outer peripheral surface is a mold surface, and an axial end of the mold body portion of the body mold. And two end surface molds that are sized to protrude from the periphery of the mold main body portion in a state of being attached to the end surface of the mold main body portion, and are formed of reinforcing fibers along the mold surface of the main body mold. In the state where the reinforced fiber layer is provided, the periphery of the reinforced fiber layer and the outer peripheral surface of both end face types are covered with an airtight film, the reinforced fiber layer is held in the airtight space, and then the inside of the airtight space is decompressed. In addition, a mold for infusion molding in which a matrix resin is supplied into the airtight space in a reduced pressure state so that the reinforcing fiber layer is impregnated with the matrix resin. Have the above ridges Both end face molds are provided with a resin injection port for supplying a matrix resin supplied from the outside of the mold to the reinforcing fiber layer through a resin flow path provided inside the end face mold, and the other end face mold is provided with an end face mold. An intake port is provided for sucking and exhausting air in the airtight space to the outside of the mold through an intake passage provided inside.

JP 2009-255472 A

  As described above, the invention in Patent Document 1 has a very significant effect as disclosed. However, it is generally possible to obtain a reinforced fiber resin molded product having pressure resistance by a hand lay-up molding method, but when molding a predetermined number of layers at once, dripping or the like tends to occur, and high pressure reinforced fiber resin molded product It is difficult to obtain goods. As a workaround for the problem, it is possible to divide a small number of layers into several times and perform hand layup molding, but it takes a long time to mold, and the resin content becomes high, so it is thickened, Cracks are likely to occur.

  In particular, in the case of a fiber reinforced resin molded product having a complicated shape such as a cheese shape, it is difficult to mold a reinforced fiber resin molded product having high pressure resistance only by hand lay-up molding.

An object of the present invention is to provide a method for manufacturing a fiber-reinforced resin joint having high pressure resistance, a fiber-reinforced resin joint, and an end face mold used for manufacturing the fiber-reinforced resin joint.
Another object of the present invention is to provide a method for producing a fiber reinforced resin joint having a high pressure resistance and having a complex shape by preventing the fiber reinforced resin layer from floating on the outer peripheral surface of the inner layer. It is providing the end surface type | mold used for manufacture of a resin coupling and a fiber reinforced resin coupling.

(1)
A manufacturing method of a fiber reinforced resin joint according to an aspect includes an airtight film comprising an attachment step of attaching an end face mold to an end face of an inner layer, a lamination step of laminating reinforcing fibers to the inner layer, and an inner layer attached with the end face mold. And a pressure reducing step of impregnating the reinforcing fibers with the matrix resin while reducing the pressure inside the airtight film.

  In this case, the end face mold is attached to the end face of the inner layer by the attaching step. Further, the reinforcing fiber is laminated on the inner layer by the lamination step. Further, in the pressure reducing step, the inner layer to which the end face mold is attached is covered with an airtight film, the inside of the airtight film is decompressed, and the reinforcing fibers are impregnated with the matrix resin.

Therefore, since it attaches using an end face type | mold in an attachment step, it can prevent resin entering into the inside of the inner layer of a fiber reinforced resin joint. Further, post-processing of the fiber reinforced resin layer becomes unnecessary due to the end face mold.
As a result, it is possible to obtain a high pressure resistant fiber reinforced resin joint that maintains its strength by the end face mold. Further, the fiber reinforced resin layer can be completely adhered to the outer periphery of the inner layer without floating from the outer peripheral surface of the inner layer.
Here, the high breakdown voltage indicates a range of 1 MPa to 50 MPa.

(2)
A method for manufacturing a fiber-reinforced resin joint according to a second aspect of the present invention is a method for manufacturing a fiber-reinforced resin joint according to one aspect, wherein the fiber layer in which the resin is impregnated into the inner layer is laminated before the lamination step. A molding step may be included.

  In this case, since the fiber reinforced resin can be laminated on the inner layer by the hand lay-up molding step, infusion molding can be performed, so that it is possible to manufacture a fiber reinforced resin joint that maintains strength for having a high pressure resistance. it can.

(3)
The fiber-reinforced resin joint according to another aspect is manufactured by the method for manufacturing a fiber-reinforced resin joint according to any one of claims 1 and 2.

In this case, it is possible to prevent the resin from entering the inner layer of the fiber reinforced resin joint. Further, post-processing is not necessary.
As a result, it is possible to obtain a fiber reinforced resin joint whose strength is maintained by the end face mold.

(4)
A fiber reinforced resin joint according to another aspect is obtained by laminating a first fiber reinforced resin layer by hand lay-up molding on the inner layer and a second fiber reinforced resin layer by infusion molding on the first fiber reinforced resin layer. It is.

  In this case, since the first fiber reinforced resin layer is formed on the inner layer and the second fiber reinforced resin layer is further formed on the first fiber reinforced resin layer, a high pressure resistant fiber reinforced resin joint can be formed.

(5)
The fiber reinforced resin joint according to the fifth aspect of the present invention is the fiber reinforced resin joint according to another aspect or still another aspect, wherein the inner layer may be formed in a cheese shape.

  In this case, even if it is a joint of complicated shape which consists of cheese shape, the fiber reinforced resin joint which maintained the intensity | strength with high pressure | voltage resistance can be obtained.

(6)
The fiber reinforced resin joint according to the sixth invention is a fiber reinforced resin joint according to still another aspect or the fifth invention, wherein the end face of the first fiber reinforced resin layer and / or the second fiber reinforced resin layer is an end face type. May be formed.

  In this case, since the end surfaces of the outer layers formed at the end portions of the first fiber reinforced resin layer and the second fiber reinforced resin layer are formed by the end surface mold, post-processing is not required, and the strength as designed is obtained. be able to.

(7)
Further, the end face type according to another aspect is an end face type used for manufacturing a fiber reinforced resin joint in which reinforcing fibers are laminated on the inner layer with respect to the inner layer, and is attached to the end portion of the inner layer. It includes a blocking portion that prevents the resin from entering the inside, and an end face forming portion that is attached to the end portion of the inner layer and forms the end portion of the fiber reinforced resin layer laminated on the inner layer.

  In this case, the blocking portion is attached to the end portion of the inner layer, and can prevent the resin from entering from the end portion of the inner layer to the inside. Moreover, an end surface formation part is attached to the edge part of a cylinder part, and the edge part of the fiber reinforced resin layer laminated | stacked on an inner layer is formed. As a result, it is not necessary to process the end of the fiber reinforced resin layer while preventing the resin from entering.

  The inner layer may have a branched shape. A branched shape means piping shapes, such as cheese shape and Y shape, for example.

It is a schematic diagram which shows an example of a fiber reinforced resin molded product. It is typical sectional drawing which shows an example of a fiber reinforced resin molded product. It is a schematic diagram which shows an example of a cover member. It is a schematic diagram which shows an example of a cover member. It is a schematic diagram for demonstrating the manufacturing process of a fiber reinforced resin molded product. It is a schematic diagram for demonstrating the manufacturing process of a fiber reinforced resin molded product. It is a schematic diagram for demonstrating the manufacturing process of a fiber reinforced resin molded product. It is a schematic diagram for demonstrating the manufacturing process of a fiber reinforced resin molded product. It is a schematic diagram for demonstrating the manufacturing process of a fiber reinforced resin molded product.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<Fiber-reinforced resin molded product>

  Hereinafter, the fiber reinforced resin molded product 100 according to the present embodiment will be described. 1 and 2 are schematic views showing an example of a fiber-reinforced resin molded product 100. FIG. FIG. 1 is a schematic view of the fiber reinforced resin molded product 100 viewed from above, and FIG. 2 is a schematic cross-sectional view of the fiber reinforced resin molded product 100 viewed from the front.

  As shown in FIG. 1 and FIG. 2, the fiber reinforced resin molded product 100 in the present embodiment is a pipe joint (also referred to as a mechanical joint) having a cheese shape.

As specifically shown in FIG. 1 and FIG. 2, the fiber reinforced resin molded product 100 in the present embodiment is formed by laminating by piping 130 based on polyvinyl chloride (hereinafter referred to as PVC) and hand layup. It is a pipe joint composed of a fiber reinforced resin layer 140 and a fiber reinforced resin layer 150 formed by infusion.
In addition, although the primer layer 141 (refer FIG. 7) is provided between the piping 130 and the fiber reinforced resin layer 140, illustration is abbreviate | omitted in FIG. 1 and FIG.

  Here, for the sake of explanation, names are given to the respective parts of the fiber reinforced resin molded product 100 of the pipe joint shown in FIGS. 1 and 2. In the fiber-reinforced resin molded product 100 of FIG. 1, a cheese-shaped (T-shaped) straight portion is referred to as “A portion”, and a branched portion is referred to as “B portion”.

Further, as shown in FIG. 2, the inner diameter of each cylindrical portion of the fiber reinforced resin molded product 100 is referred to as an inner diameter L1, and the outer diameter is referred to as an outer diameter L2.
In addition, in this Embodiment, although the case where the internal diameter of each cylinder part was the same was demonstrated, it is not limited to this and may differ. Moreover, although the cheese-shaped joint was demonstrated, it is not limited to this, You may apply also about other arbitrary shapes, such as Y character.

<Cover member>
Next, the lid member 600 used to mold the fiber-reinforced resin molded product 100 in the present embodiment will be described.
3 and 4 are schematic views showing an example of the lid member 600. FIG. FIG. 3 shows the front surface of the lid member 600, and FIG. 4 shows the side surface of the lid member 600.

As shown in FIGS. 3 and 4, the lid member 600 includes a first lid 610, a second lid 620, and a third lid 630.
The outer diameter of the 3rd cover part 630 consists of the outer diameter L3 fitted to the inner diameter L1. The outer diameter L3 is a diameter that is slightly smaller than the inner diameter L1. Moreover, the 2nd cover part 620 consists of outer diameter L4. The outer diameter L4 is at least the same as the outer diameter L2 or a diameter larger than the outer diameter L2. The first lid portion 610 has the same outer diameter as the third lid portion 630.

Moreover, as shown in FIG. 4, the edge part of the 3rd cover part 630 has C surface. The C surface is formed to facilitate the insertion of the lid member 600 at the end of the fiber reinforced resin molded product 100, as will be described later.
In addition, R shape may be formed instead of C surface, and the cylinder part of the 3rd cover part 630 may be formed in a taper shape.

<Method for producing fiber-reinforced resin molded article 100>
Next, a method for manufacturing the fiber reinforced resin molded product 100 will be described. FIG. 5 to FIG. 11 are schematic diagrams for explaining the manufacturing process of the fiber-reinforced resin molded product 100.

(Cover member 600 attached)
First, as shown in FIG. 5, the lid members 600 are respectively attached to the ends of the PVC pipe 130 made of cheese.
Specifically, in the present embodiment, three lid members 600 are attached to the end of the pipe 130.

(Primer application process)
Next, as shown in FIG. 6, primer coating for forming a base is applied to a PVC pipe 130 having a cheese shape. As a result, as shown in FIG. 6, a primer layer 141 is formed on the PVC pipe 130.
As a material for the primer application step, any other primer resin such as unsaturated polyester resin (manufactured by Nippon Yupica Co., Ltd., trade name “Yupika”, product number “8800”) may be used.

(Reinforcing fiber material mounting process by hand lay-up)
Next, as shown in FIG. 7, a reinforcing fiber material having a sheet shape or a tape shape is wound around the outer peripheral surface after the primer layer 141 is formed by hand layup. In the present embodiment, the fiber reinforced resin layer 140 is formed by winding a reinforced fiber material so that the layer thickness L11 is about 6 mm. The number of windings is preferably about 10 times or less or not to be self-suspended. Further, as shown in FIG. 7, the reinforcing fiber material is wound and formed by defoaming while impregnating the resin with a brush or a roller.

It should be noted that any other reinforcing fiber material such as glass fiber (manufactured by Knit Roving Easy Fab FR Service Co., Ltd.) may be used as the reinforcing fiber material in the reinforcing fiber material mounting step.
Furthermore, a release cloth (not shown) or a resin diffusion medium (not shown) may be wound around the fiber reinforced resin layer 140 as appropriate.

(Reinforcing fiber material mounting process by infusion)
Next, a state where infusion molding is performed from a state where the fiber reinforced resin layer 140 and the reinforcing fiber material are wound will be described.

(Decompression pretreatment process)
As a decompression pretreatment process, as shown in FIG. 8, one end side of the intake pipe 820 is inserted and attached to the A part. The intake pipe 820 is connected to a vacuum pump 891 to be described later, and has a role of an intake tube.

Further, a resin supply pipe 830 is inserted and attached to the lid member 600. The three pipes 830 have a role of a pipe guide, and a tube 831 is attached to the pipe 830 of the pipe guide.
As shown in FIG. 9, the tube 831 is provided so that resin can be injected into a resin-injecting spiral tube 840 attached below the pipe 830.

After performing the above steps, the PVC pipe 130 around which the fiber reinforced resin layer 140 and the reinforcing fiber material are wound is accommodated in the film bag 880, and the ends of the pipe 830 and the intake pipe 820 are attached to the film bag 880. It goes out and the inside of the film bag 880 is made airtight.
Further, a sealing material may be used to make the film bag 880 airtight. For example, a butyl rubber tape or the like may be used as the sealing material.

(Decompression treatment process)
Next, in the decompression processing step, the vacuum pump 891 is driven, and the air in the film bag 880 is sucked (exhausted) in the direction of the arrow EX from the intake pipe 820, and the film bag 880 is decompressed. As a result, the film bag 880 contracts in the direction in which the fiber reinforced resin layer 140 and the reinforced fiber material are tightened.

  By reducing the pressure inside the film bag 880, the matrix resin is supplied from the matrix resin supply tank 892 to the intake pipe 820 toward the film bag 880 (in the direction of the arrow IN).

  As a result, the reinforcing fiber layer is impregnated with the matrix resin through the resin injection spiral tube 840. And the fiber reinforced resin layer 150 laminated and formed by infusion is formed.

(Removal process)
The fiber reinforced resin layer 150 is cured while the heat generation starts and becomes a gelled state. The driving of the vacuum pump 891 is stopped before complete curing (solidification), and after the matrix resin is solidified (for example, 24 hours later). ) Stop the decompression step.

  As a result, the fiber reinforced resin molded product 100 shown in FIG. 1 or 2 can be obtained.

  In the present embodiment, a sheet material mounting step may be added after the reinforcing fiber material mounting step. As the sheet member, a polyethylene sheet having a thickness of 0.25 mm can be used. Further, the sheet member may be composed of an arbitrary member such as a thermoplastic resin sheet or a thermosetting resin sheet having a thickness of 0.1 mm to 1.0 mm, and other highly rigid metal plates.

  In addition, when using a sheet | seat member, it is preferable to overlap a part (superimposition). As a result, when the sheet member is mounted and impregnated with the matrix resin and cured, it is possible to prevent a step from being generated in the sheet member. As a result, it is possible to obtain a fiber reinforced resin molded article 100 having good surface properties.

Moreover, it is preferable that the dimension which overlaps a part is the range of 1 mm or more and 50 mm or less, and it is more preferable that they are 10 mm or more and 30 mm or less.
If the overlapping part is smaller than 1 mm, the fiber reinforced resin layer 150 mounted in the reinforcing fiber material mounting process is difficult to cope with variations in winding thickness (outer diameter) in an unloaded state. There is a risk of breakage.

  Also, if the partly overlapping dimension is larger than 50 mm, the friction of the partly overlapping part increases in the decompression process, and there is a possibility that uniform diameter reduction cannot be achieved and wrinkles are generated.

(Example of reinforcing fiber)
In the present embodiment, the reinforcing fiber used to form the fiber reinforced resin layers 140 and 150 is exemplified by a reinforcing fiber material, but is not limited thereto. For example, glass fiber, carbon fiber, aramid fiber, Polyvinyl alcohol fiber, vinyl chloride fiber, acrylic fiber, polyester fiber, polyurethane fiber, polyethylene fiber, polypropylene fiber, polystyrene fiber, other organic synthetic fiber such as acetate fiber, other inorganic fiber such as metal fiber, hemp, bamboo, etc. Natural fibers, regenerated fibers such as rayon, and the like. In particular, glass fiber, carbon fiber, and aramid fiber are suitable. Moreover, you may use the reinforcing fiber mentioned above in mixture of multiple types.

Further, the reinforcing fiber is roving, woven fabric, non-woven fabric, mixed paper, etc., threaded, matted, cloth-like, tape-like, or processed into a sheet-like shape, and then wound into a mold, for example The fiber reinforced resin layers 140 and 150 may be formed.
The strength of the reinforcing fibers used and the reinforcing fiber density of the fiber reinforced resin layers 140 and 150 may be appropriately selected from the strength and thickness (lamination amount) of the desired molded product.

(Example of matrix resin)
In the above embodiment, the matrix resin used is not particularly limited. For example, unsaturated polyester resin, acrylic resin, vinyl ester resin, alkyd resin, amino resin, epoxy resin, urethane resin, phenol resin. A thermosetting resin such as a silicone resin can be used.
Polyethylene resin, polypropylene resin, polystyrene resin, polybutadiene resin, styrene butadiene resin, polyacetal resin, polyamide resin, polycarbonate resin, polyphenylene ether resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyarylate resin, polystyrene resin, polyethersulfone Thermoplastic resins such as resin, polyimide resin, polyamideimide resin, polyphenylene sulfide resin, polyoxybenzoyl resin, polyetheretherketone resin, polyetherimide resin, and cellulose acetate resin can be used.

  In addition, the matrix resin used in the present embodiment preferably has a viscosity of 0.2 Pa · s or less in order to promote the impregnation into the fiber reinforced resin layer 150. When the viscosity exceeds 0.2 Pa · s, it becomes difficult for the matrix resin to impregnate the fiber reinforced resin layer 150, and the impregnation time becomes long, so that the productivity may be lowered or the impregnation may be poor.

Therefore, when the matrix resin to be used is a thermoplastic resin, the resin to be supplied may be heated in advance to be in a molten state and the viscosity may be lowered.
In consideration of coloring pigments, durability after molding, etc., an antioxidant, a flame retardant, a heat stabilizer, an ultraviolet absorber, a light stabilizer, or the like may be appropriately blended with the matrix resin.

(Example of film bag 880)
The airtight film bag 880 used in this embodiment may have any shape such as a bag film shape, a bag shape, a cheese shape, a Y shape, a cylindrical shape, or a flange-compatible shape.

The film bag 880 is not particularly limited as long as the airtight state can be secured and the inner peripheral surface is in close contact with the peripheral surface of the reinforcing fiber material. For example, the material is polyethylene, polypropylene, polyvinyl chloride, polyamide, nylon resin, or the like. It may be made of a resin such as a film.
Further, the performance of the airtight film bag 880 is preferably a size that can accommodate the pipe 130 and that can ensure workability and airtightness during mounting.

  In this embodiment, if necessary, a release cloth for promoting peeling of the airtight film bag 880 or a matrix resin supplied into the space of the airtight film bag 880 is diffused and flowed. A resin diffusion medium that allows quick and uniform impregnation of the reinforcing fibers of the fiber reinforced resin layer 150 may be provided along the fiber reinforced resin layer 150.

  Further, in addition to the resin diffusion medium, the fiber reinforced resin layer 150 may be divided into a plurality of parts in the thickness direction, and a resin diffusion medium made of the same material as the reinforcing fiber layer may be sandwiched between the divided layers. Further, the fiber reinforced resin layer 150 may be impregnated with the matrix resin uniformly and rapidly, or a diffusion flow path may be provided in which the matrix resin flows while diffusing using a capillary phenomenon or the like. For example, a resin diffusion medium used for infusion molding (for example, trade name “Amirasu Flow” manufactured by Nittobo Co., Ltd.) may be used.

  As described above, in the fiber reinforced resin molded product 100 according to the present invention, the fiber reinforced resin layers 140 and 150 can be completely adhered to the pipe 130 without floating from the inner layer surface. That is, it is possible to prevent the occurrence of insufficient resin filling. As a result, a fiber reinforced resin molded product 100 having a certain strength can be obtained.

  In addition, since the fiber reinforced resin layer 140 is laminated on the pipe 130 by the hand lay-up molding step, infusion molding can be performed, so that the fiber reinforced resin molded article 100 maintaining strength can be manufactured.

  Moreover, since the lid member 600 can be attached to the end portion of the inner layer, the resin can be prevented from entering from the end portion of the inner layer of the fiber reinforced resin molded product 100.

  Moreover, since the fiber reinforced resin layer 140 can be laminated and formed by hand lay-up with a thickness that does not cause self-sag, and the fiber reinforced resin layer 150 can be laminated and formed by infusion molding, fibers having a difficult shape made of cheese Even in the case of the reinforced resin molded product 100, the fiber reinforced resin molded product 100 that is completely adhered to the pipe 130 can be obtained without causing the fiber reinforced resin layers 140 and 150 to float from the inner layer surface.

  Moreover, since it is formed by the lid member 600, post-processing is not required, and the strength as designed can be obtained.

  In the present embodiment, the PVC-based pipe 130 corresponds to the “inner layer”, the steps of FIGS. 6 and 7 correspond to the “lamination step of laminating fiber reinforced resin”, and the process of FIG. The film bag 880 corresponds to an “airtight film”, the process of FIG. 9 corresponds to a “decompression step”, and the processes of FIGS. 5 to 9 correspond to “fiber-reinforced resin joints”. 7 corresponds to the “hand lay-up molding step”, the lid member 600 corresponds to the “end face type”, and the fiber reinforced resin layers 140 and 150 correspond to the “fiber reinforced resin layer”. The fiber reinforced resin molded product 100 corresponds to “fiber reinforced resin joint”, the fiber reinforced resin layer 140 corresponds to “first fiber reinforced resin layer”, and the fiber reinforced resin layer 150 corresponds to “second fiber reinforced resin”. Resin layer ”and the third lid 6 0 corresponds to a "closing portion", the second lid portion 620 corresponds to the "end surface forming portion."

  A preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

DESCRIPTION OF SYMBOLS 100 Fiber reinforced resin molded product 130 Piping 140 Fiber reinforced resin layer 150 Fiber reinforced resin layer 600 Cover member 620 2nd cover part 630 3rd cover part 830 Pipe for resin supply 840 Spiral tube 880 Film bag

Claims (7)

An attaching step for attaching an end face mold to the end face of the inner layer;
A lamination step of laminating reinforcing fibers to the inner layer;
A pressure-reducing step of covering the inner layer to which the end face mold is attached with an airtight film and depressurizing the inside of the airtight film while impregnating the reinforcing fibers with a matrix resin.   The method for producing a fiber-reinforced resin joint according to claim 1, further comprising a hand lay-up molding step of laminating fibers impregnated with resin to the inner layer before the laminating step.   A fiber-reinforced resin joint manufactured by the method for manufacturing a fiber-reinforced resin joint according to claim 1.   A fiber reinforced resin joint in which a first fiber reinforced resin layer by hand lay-up molding and a second fiber reinforced resin layer by infusion molding are laminated on the inner layer.   The fiber reinforced resin joint according to claim 3 or 4, wherein the inner layer has a cheese shape.   The fiber reinforced resin joint according to claim 4 or 5, wherein end surfaces of the first fiber reinforced resin layer and / or the second fiber reinforced resin layer are formed by an end surface mold. For the inner layer, an end face type used for manufacturing a fiber-reinforced resin joint in which reinforcing fibers are laminated on the inner layer,
A blocking portion that is attached to an end portion of the inner layer and prevents resin from entering the inside from the end portion of the inner layer;
An end face mold used for manufacturing a fiber reinforced resin joint, comprising: an end face forming part which is attached to an end part of the inner layer and forms an end part of a fiber reinforced resin layer laminated on the inner layer.

Images