JP2005089161A - Manufacturing device of fiber reinforced composite material, its manufacturing method, and pressure vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing device of a fiber reinforced composite material which can certainly prevent fluff, abrasion scar, breakage or the like generated by abrasion of a reinforced fiber bundle even in a simple structure when the reinforced fiber bundle is conveyed in a linked state from a bobbin to a core material, and can certainly prevent the reduction of strength of the reinforced fiber bundle caused during conveyance, its manufacturing method, and a pressure vessel. <P>SOLUTION: The surface roughness of the fiber bundle contact surfaces of guides 6-21 contacting with the reinforced fiber bundle 30 during the conveyance is set not higher than 30S determined by "highest standard sequence" indicating the surface roughness of an industrial product based on JIS. More preferably, the fiber bundle contact surfaces of guides 6-21 have a plating layer with thickness of 100 μm or less, and the surface hardness of the fiber bundle contact surfaces of guides 6-21 is 300 or higher in Brinell hardness. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fiber-reinforced composite material manufacturing apparatus, a manufacturing method, and a pressure vessel, in which a reinforcing fiber impregnated with a resin is continuously wound around a core material to form a product. The present invention relates to an excellent fiber-reinforced composite material manufacturing apparatus, manufacturing method, and pressure vessel.

  One method for molding a fiber-reinforced composite material with reinforcing fibers is a filament winding molding method (hereinafter referred to as FW method). This method is a method in which a reinforcing fiber bundle impregnated with a resin is continuously wound around a mandrel, a liner, or the like, and then the impregnated resin is cured to obtain a molded body.

Examples of the molded body formed by the FW method include a reinforced fiber roll used for a rotary press, a propeller shaft used for driving transmission of an automobile, a golf club shaft, a pressure vessel, and the like. Conventionally, a metal wire has been used as the reinforcing fiber, and the molded body has been made of metal.

However, a molded body made of a metal material is heavier, and when this molded body is used as a rotating body such as a propeller shaft, there is a lot of energy loss. In addition, when used as a pressure storage application such as a pressure vessel, the filling pressure cannot be increased due to strength problems.
A sufficient filling amount could not be obtained. For this reason, in recent years, in order to reduce the weight of the molded body molded by the FW method, a high-strength molded body reinforced with fiber has been frequently used.

When a molded body is obtained by the FW method, a product can be easily molded, but it is important how to express the strength of the reinforcing fiber. When the original strength of the reinforcing fiber cannot be sufficiently exhibited, the FW method is forced to wind the reinforcing fiber bundle thickly around the mandrel more than necessary, and as a result, the weight of the molded body is increased. The problem of becoming heavier than necessary has occurred. Further, depending on the process by the FW method, the handling property of the reinforcing fiber bundle is deteriorated, and the time required for molding becomes long, and there are problems such as damage due to abrasion generated when the reinforcing fiber bundle passes through the guide.

In order to eliminate the above problems, the fiber bundle feeding mechanism of a filament winding machine (hereinafter referred to as FW machine) that can reduce the damage caused by rubbing on the reinforcing fiber bundle and thereby increase the strength of the reinforcing fiber bundle. (For example, see Patent Document 1, FIG. 2, and FIG. 6)
Has been proposed.

The fiber bundle feeding mechanism 51 of the FW machine 60 described in Patent Document 1 includes a first fiber guide member 52, a second fiber guide member 53, and a third fiber feed member 54 as shown in FIG. Yes. The first fiber guide member 52 includes a first fiber feed roller 55 that is provided in the fixed portion 61 of the FW machine 60 and is separated from the swing center line Q. The second fiber guide member 53 has a second fiber feed roller 56 that is provided in the rocking portion 62 and is separated from the rocking center line Q.
The third fiber feed roller 57 provided in the third fiber guide member 54 is centered on the first rotation shaft 58 in the direction along the swing center line Q and the second rotation shaft 59 in the direction intersecting the swing center line Q. It is rotatably supported by.

Tension springs 63 and 64 are stretched between both ends of the third fiber feed roller 57 and both ends of the first and second fiber feed rollers 55 and 56, respectively. Each of the tension springs 63 and 64 erects the third fiber feed roller 57 in the direction of the first fiber feed roller 55 and the second fiber feed roller 56, and causes the third fiber feed roller 57 to stand in the first fiber feed roller 55. And a tension that maintains an angle between the second fiber feed roller 56 and the second fiber feed roller 56 is generated.

As shown in FIG. 3, the conventional fiber bundle feeding mechanism 51 has a swinging part 62 having a second fiber feeding roller 56 in a vertical direction in FIG. 3 with respect to a fixing part 61 having a first fiber feeding roller 55. When the direction of conveyance of the fiber bundle is greatly changed by swinging the fiber bundle, the third fiber guide member 54
The third fiber feed roller 57 includes a first fiber feed roller 55 and a second fiber feed roller 56.
3 and the head is swung in the direction of the arrow R in FIG. 3, thereby smoothly changing the direction of the fiber bundle.

As a result, the fiber bundle does not fall off from the first to third fiber feed rollers 55 to 57, and the fiber bundle is not damaged by abrasion, and the fiber bundle is smoothly directed toward the mandrel. Can be sent out.
JP-A-10-95570

In the fiber bundle feeding mechanism of the conventional FW machine as disclosed in the above-mentioned Patent Document 1, in order to send the fiber bundle being conveyed toward a desired position and direction with respect to the mandrel, the conveyance direction of the fiber bundle is changed. It is necessary to add a member to be converted and a tension control facility to the fiber bundle feeding mechanism. For this reason, the structure becomes complicated, high processing accuracy is required, and the workability of production and assembly is greatly affected.

Also, coupled with the complexity of the structure of the fiber bundle feeding mechanism, it takes time for maintenance work such as maintenance inspection, maintenance, and replacement to maintain the quality of the fiber yarn introduction and fiber bundle feeding mechanism, and the productivity. Various problems remain, such as loss of maintenance costs and increase in maintenance costs.

  The present invention has been made in view of such circumstances, and occurs when the reinforcing fiber bundle is conveyed in a state of being connected from the bobbin to the core material due to the abrasion of the reinforcing fiber bundle while having a simple structure. A device for manufacturing a fiber-reinforced composite material, a manufacturing method thereof, and a pressure capable of reliably preventing fuzz, scratches, breakage, and the like and capable of reliably preventing a decrease in strength of a reinforcing fiber bundle that occurs during conveyance To provide a container.

The invention according to Claim 1 includes a large number of bobbins each having a bundle of reinforcing fibers wound thereon, a core material for forming a product by winding a plurality of reinforcing fiber bundles drawn from each bobbin, An apparatus for manufacturing a fiber reinforced composite material, which is disposed in a reinforcing fiber bundle conveying path from a bobbin to the core material and includes a guide for guiding and guiding each reinforcing fiber bundle, wherein the reinforcing fiber bundle contacts The apparatus for producing a fiber-reinforced composite material, wherein the surface roughness of the fiber bundle contact surface in the guide is 30S or less determined by a standard sequence of maximum heights representing the surface roughness of industrial products based on JIS standards It is in.

  The “core material” in the present invention is specifically a mandrel, a liner, or the like. That is, when the FW method is used, the reinforcing fiber bundle impregnated with the resin is continuously wound and the resin impregnated in the reinforcing fiber bundle is cured and then removed from the product, or after molding, Any of those integrated with a reinforced fiber composite material is included.

The invention according to claim 2 is the invention according to claim 1, characterized in that the fiber bundle contact surface of the guide has a plating treatment layer having a thickness of 100 μm or less.

The invention according to claim 3 is the invention according to claim 1 or 2, characterized in that the surface hardness of the fiber bundle contact surface in the guide has a Brinell hardness of 300 or more.

The invention according to a fourth aspect is the invention according to any one of the first to third aspects, wherein the guide is cantilevered by a support member disposed on the reinforcing fiber bundle conveyance path. It is a feature.

The invention according to claim 5 is to simultaneously pull out the reinforcing fiber bundles from a large number of bobbins, convey the drawn reinforcing fiber bundles on the same plane with a guide, and between the reinforcing fiber bundles. Carrying in to the traverse part with a gap, aligning and guiding the reinforcing fiber bundles in the traverse part, and feeding the aligned reinforcing fiber bundles to the core at the same time. A method for producing a fiber-reinforced composite material comprising forming a product by winding a bundle around a core material, wherein the surface roughness of the fiber bundle contact surface in the guide with which each of the reinforcing fiber bundles contacts is JIS A guide which is 30S or less defined by a standard sequence of the maximum height representing the surface roughness of the industrial product based on the standard is arranged in the reinforcing fiber bundle conveying path from each bobbin to the core material, A method for producing a fiber-reinforced composite material, characterized in that each reinforcing fiber bundle drawn out to transport in contact with the fiber bundle contact surface of the guide from one.

  The invention according to claim 6 uses the method for manufacturing a fiber-reinforced composite material according to claim 5 and has different orientations in the radial direction, the axial direction, and the circumferential direction from the inner surface side toward the outer surface side. It is in a pressure vessel formed from a fiber reinforced resin layer having a structure.

The apparatus for producing a fiber-reinforced composite material according to the present invention sets the surface roughness of the fiber bundle contact surface of the guide with which the reinforcing fiber bundle being conveyed contacts to a value of 30 S or less, as in the invention according to claim 1. It is configured as follows. This surface roughness uses a “standard sequence of maximum heights” representing the surface roughness of industrial products based on JIS standards, and the maximum height defines the surface roughness of the fiber bundle contact surface of the guide. ing.

As the material of the guide base material which is the subject of the present invention, a general steel material such as stainless steel or SCM steel standardized as JIS symbol SUS304 can be used. This guide is, for example, a long bar or a circular member in which a freely rotatable guide roller made of a cylindrical body or solid body having a circular cross section, and a plurality of comb pins having an equipitch comb tooth shape are erected. And a fixed guide member such as a bar member made of a solid body or a solid body having a cross section.
The present invention can be applied to the above freely rotatable guide roller and a fixed guide member.

As the surface roughness of the fiber bundle contact surface of the guide, 35S or less (Rmax: 35 μm) is effective. Preferably, the upper limit value is 25S (Rmax is 25 μm), and the lower limit value is 3S.
The range of (Rmax 3 μm) is particularly desirable. By setting the surface roughness to 35 S or less, the frictional resistance between the reinforcing fiber bundle and the guide can be kept low. This
Generation of fuzz caused by abrasion of the reinforcing fiber bundle by the guide, and breakage, abrasion, breakage, etc. of the reinforcing fiber bundle can be surely prevented, and the damage to the reinforcing fiber bundle is greatly reduced. Can do.

When the surface roughness exceeds 35S, abnormal wear tends to occur between the fiber bundle contact surface of the guide and the reinforcing fiber bundle. This abnormal wear increases the damage given to the reinforcing fiber bundle, and the strength of the finally obtained molded product is lowered, which is not preferable.

In order to bring out the above-mentioned effects remarkably, it is preferable that a coating layer is formed on the base material of the guide targeted by the present invention. It is particularly useful to appropriately combine the film thickness dimension and material of the coating layer and the material of the base material of the guide. As the base material of the guide, for example, steel materials subjected to general carbide coating treatment, carbonitriding treatment or carburizing and quenching treatment, such as carburized steel, carbon steel, carbonitride steel, etc. are effective. Can be adopted.

In response to this, the fiber bundle contact surface of the guide has a plating layer having a thickness of 100 μm or less as in the invention according to claim 2. This plating treatment includes plating treatment by electricity, melting and vapor deposition. For example, it is preferable to apply hard chrome plating to the fiber bundle contact surface of the guide, and the thickness of the plating treatment layer is 100 μm or less. It is desirable to be.

By applying a plating treatment layer having a thickness of 100 μm or less to the fiber bundle contact surface of the guide, the reinforcing fiber bundle being conveyed can be smoothly contacted and conveyed with a small contact resistance, and the friction resistance is reduced. Can be reduced.

As a result, abnormal wear of the fiber bundle contact surface can be reduced, and damage due to scratches or the like on the reinforcing fiber bundle in contact with the fiber bundle contact surface can be greatly reduced. Therefore, the strength inherent to the reinforcing fiber bundle can be sufficiently ensured, and the strength expression of the finally obtained molded body can be greatly improved.

If the film thickness exceeds 100 μm, it takes too much time for film formation, and further, it may not be possible to effectively form a thin film body having a smooth and uniform film thickness. Absent.

The surface hardness of the fiber bundle contact surface in the guide has a Brinell hardness of 300 or more as in the invention according to claim 3. When the fiber bundle contact surface of the guide has a surface hardness of Brinell hardness of 300 or more, the fiber bundle contact surface can prevent wear caused by abrasion of the reinforcing fiber bundle being conveyed, Damage to the reinforcing fiber bundle based on wear generated on the fiber bundle contact surface can be reduced.

When the surface hardness is less than 300, the friction between the guide and the reinforcing fiber bundle that is brought into contact with and conveyed by the fiber bundle contact surface causes intense wear on the fiber bundle contact surface of the guide. Unevenness is formed on the bundle contact surface. The unevenness of the reinforcing fiber bundle is further increased by the unevenness, and the strength development property of the finally obtained molded article is deteriorated.

As in the invention according to claim 4, the guide is preferably cantilevered by a support member disposed on the reinforcing fiber bundle conveyance path. By supporting one side of the guide, the handling property of the reinforcing fiber bundle can be improved. Thereby, the time required for process preparation and completion work can be reduced, and the manufacturing time of the fiber-reinforced composite material can be greatly shortened.

  The method for producing a fiber-reinforced composite material of the present invention can be carried out, for example, using the representative production apparatus of the present invention. A typical method for producing a fiber-reinforced composite material is the invention according to claim 5. In the method for producing a fiber-reinforced composite material of the present invention, a resin is applied to each of a plurality of reinforcing fiber bundles drawn from each bobbin via a resin tank disposed in the reinforcing fiber bundle conveyance path, or Any method of conveying the reinforcing fiber bundle impregnated with the resin in advance by removing the resin tank from the reinforcing fiber bundle conveying may be adopted.

In producing a fiber reinforced composite material, as the guide, the standard number sequence of the maximum height, in which the surface roughness of the fiber bundle contact surface in the guide with which the reinforcing fiber bundle contacts represents the surface roughness of the industrial product based on JIS standard The guide which is 30S or less determined by the above is disposed in the reinforcing fiber bundle conveyance path from each bobbin to the mandrel.

By regulating the surface roughness of the fiber bundle contact surface of the guide to 30S or less, the fiber bundle contact of the guide is suppressed while keeping the frictional resistance between the reinforcing fiber bundle drawn from each bobbin and the guide low. Each reinforcing fiber bundle can be smoothly brought into contact with the surface and conveyed. By this, the process passability of each reinforcing fiber bundle is improved, and the manufacturing time of the fiber reinforced composite material can be greatly shortened.

A fiber reinforced resin layer having a three-layer structure having different orientations in the radial direction, the axial direction, and the circumferential direction from the inner surface side toward the outer surface side is formed by using the method for manufacturing the fiber reinforced composite material, A pressure vessel like this invention is obtained.

Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
FIG. 1 is a structural explanatory view schematically showing an example of a fiber-reinforced composite material manufacturing apparatus according to a typical embodiment of the present invention.

Examples of the reinforcing fiber applied to the present invention include carbon fiber, glass fiber, aramid fiber, P
Although BO fiber etc. can be used, it is not specifically limited. The reinforcing fiber wound around the bobbin can be any of those that are not impregnated with a resin, or those that are impregnated with a resin in advance to form a prepreg. The resin applied to the present invention is not particularly limited, but a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, a phenol resin, or a thermoplastic resin such as an acrylic resin is used. be able to.

The basic configuration of the fiber-reinforced composite material manufacturing apparatus 1 according to FIG. 1 is a required number of reinforcing fiber bundles 30,
..., 30 bobbins 2 (2a, 2b, 2c) along the longitudinal reinforcing fiber bundle conveying path
The resin impregnation apparatus 3 (resin tank 3a), the traverse part 4, and the core material 5 are sequentially arranged in series.

  The driving of the traverse unit 4 and the core member 5 is not particularly limited. For example, the traverse unit 4 is controlled and driven in the XYZ axis directions based on a command from a control unit (not shown). The The core material 5 is driven to rotate around its central axis. For the traverse part 4 and the core material 5, for example, a device having the same configuration as that of the fiber bundle feeding mechanism described in Patent Document 1 can be used.

  A plurality of fixed guides 6 to 15 and rotary guides 16 to 21 arranged in a direction orthogonal to the drawing direction of each reinforcing fiber bundle 30 are provided in the reinforcing fiber bundle transporting path transported from each bobbin 2 to the core material 5. Each reinforcing fiber bundle 30 is configured to be conveyed while being guided and guided to the core material 5. These guides 6 to 21 are structured to be held on both the left and right sides or one side of a support member (not shown) arranged on the reinforcing fiber bundle conveyance path.

In the present embodiment, the one-side end portions of the guides 6 to 21 are configured to be fixedly supported in a cantilever state via a mounting member (not shown). By supporting one side of the guide, the handling property of the reinforcing fiber bundle 30 can be improved. In addition, the time required for process preparation and completion work can be reduced, and the manufacturing time of the reinforcing fiber bundle 30 can be greatly shortened.

The main characteristic part of the present invention is to set the surface roughness of the fiber bundle contact surface in the guides 6 to 21 with which the reinforcing fiber bundle 30 being conveyed contacts to 30S or less. This surface roughness uses a “standard sequence of maximum heights” representing the surface roughness of industrial products based on JIS standards, and the surface roughness of the fiber bundle contact surface of the guide is defined by the maximum height. .

As the material of the base material of the guides 6 to 21, a general steel material such as stainless steel or SCM steel standardized as JIS symbol SUS304 can be used. This guide 6
21 to 21 are a cylindrical body having a circular cross section, a freely rotatable guide roller made of a solid body, a long bar in which a plurality of comb pins having an equal pitch of comb teeth are erected, a cylindrical body having a circular cross section, A stationary guide member such as a bar member made of solid material is included. The present invention can be applied to the fiber bundle contact surfaces of these guides 6-21.

The surface roughness of the fiber bundle contact surface in the guides 6 to 21 is 35 S or less (Rmax
(35 μm) is effective. The upper limit value is particularly preferably 25S (Rmax: 25 μm) and the lower limit value is 3S (Rmax: 3 μm).

By setting the surface roughness to 35 S or less, the frictional resistance between the reinforcing fiber bundle 30 and the guides 6 to 21 can be kept low. Thereby, when conveyed in contact with the guides 6 to 21, it is possible to reliably prevent generation of fuzz caused by abrasion of the reinforcing fiber bundle 30, breakage, abrasion damage, breakage, etc. of the reinforcing fiber bundle 30. As a result, damage to the reinforcing fiber bundle 30 can be greatly reduced.

When the surface roughness exceeds 35S, abnormal wear occurs between the fiber bundle contact surface of the guides 6 to 21 and the reinforcing fiber bundle 30. This abnormal wear increases the damage given to the reinforcing fiber bundle 30 and decreases the strength of the finally obtained molded body, which is not preferable.

In the present invention, the base material of the guides 6 to 21 is preferably formed with a coating layer such as a plating layer. It is particularly effective to appropriately combine the film thickness dimension and material of the coating layer and the material of the base material of the guides 6-21. The base material of the guides 6 to 21 is a steel material subjected to general carbide coating treatment, carbonitriding treatment or carburizing and quenching treatment as a steel material other than the above-described stainless steel or SCM steel, for example, carburized steel, carbon steel. Or carbonitride steel can be used.

In this embodiment, a plating process is performed as a surface treatment for the fiber bundle contact surfaces of the guides 6 to 21. This plating process includes a plating process by electricity, melting, and vapor deposition. For example, it is preferable to apply hard chrome plating to the fiber bundle contact surface of the guides 6 to 21. The thickness of the plating layer is desirably 100 μm or less.

By applying a plating treatment layer having a thickness of 100 μm or less to the fiber bundle contact surface of the guides 6 to 21, the reinforcing fiber bundle 30 being conveyed can be smoothly contacted and conveyed with a small contact resistance. The frictional resistance between the reinforcing fiber bundle 30 and the fiber bundle contact surface of the guides 6 to 21 can be reduced. As a result, abnormal wear of the fiber bundle contact surface can be reduced, and damage due to scratches or the like can be significantly reduced with respect to the reinforcing fiber bundle 30 in contact. Therefore, the strength inherent to the reinforcing fiber bundle 30 can be sufficiently ensured, and the strength expression of the finally obtained molded body can be improved.

If the film thickness exceeds 100 μm, it takes too much time for film formation, and further, it may not be possible to effectively form a thin film body having a smooth and uniform film thickness. Absent.

Moreover, it is preferable that the surface hardness of the fiber bundle contact surface in the guides 6 to 21 has a Brinell hardness of 300 or more. Brinell hardness 30 on the fiber bundle contact surface of the guides 6-21
When it has a surface hardness of 0 or more, it is possible to prevent wear caused by rubbing of the reinforcing fiber bundle 30 being conveyed against the fiber bundle contact surface. Thereby, the damage to the reinforcing fiber bundle 30 based on the wear generated on the fiber bundle contact surface can be reduced.

When the surface hardness is less than 300, wear on the fiber bundle contact surface becomes intense due to friction with the reinforcing fiber bundle 30 conveyed in contact with the fiber bundle contact surface of the guides 6 to 21, Unevenness is formed on the fiber bundle contact surface. The unevenness further increases the damage of the reinforcing fiber bundle 30, and the strength expression of the finally obtained molded article deteriorates.

Among the guides 6 to 21 configured as described above, the fixed guides 6, 7, 9, 10
, 13 and 15 are constituted by long cylindrical guide members. The fixed guides 8, 11, 12, and 14 are formed in a comb shape so that the reinforcing fiber bundles 30 can pass independently. Each comb-shaped fixed guide 8, 11, 12, 14 is provided with a plurality of comb pins (not shown) having a comb-teeth shape with an equal pitch having a number corresponding to the number of reinforcing fiber bundles 30. ,
The reinforcing fiber bundle 30 can be guided and guided so as to pass through a predetermined position.

The fixed guides 8 to 15 are preferably configured as a set of a cylindrical guide member and a comb-shaped guide member. By combining the cylindrical guide member and the comb-shaped guide member, the basis weight of the reinforcing fiber bundle 30 can be stabilized, and the strength of the finally obtained molded body can be increased. The combination of the cylindrical fixed guides 9, 10, 13, 15 and the comb-shaped fixed guides 8, 11, 12, 14 is not limited to the illustrated example. A combination of more than one set may be used.

The rotary guides 16 to 20 are constituted by independently rotatable cylindrical guide rollers having a number corresponding to the number of reinforcing fiber bundles 30. The rotary guide (delivery head) 21 is composed of a single cylindrical guide roller. The rotary guide 21 has a function of converging the reinforcing fiber bundles 30 into a flat shape and feeding them to the core material 5. Both end portions of the rotating portion of the rotary guide 21 have a pair of disc-shaped flange portions (not shown) set larger than the diameter of the rotating portion in order to prevent the reinforcing fiber bundle 30 from falling off. ing.

By using the guides 6 to 21 configured as described above, a typical method for manufacturing a fiber-reinforced composite material of the present invention is implemented.

In the illustrated example drawn from each bobbin 2, the three reinforcing fiber bundles 30 are conveniently connected to each reinforcing fiber bundle 3.
Of the two guides 6, 7 that are arranged perpendicularly to the direction of the zero pulling out with a height difference, after straddling the upper guide 6, they are alternately wound so as to dive under the next guide 7. The reinforcing fiber bundles 30 are simultaneously pulled out from each bobbin 2 under a predetermined tension. Note that the number of bobbins 2 is not limited to three, and a desired number of bobbins 2 can be arranged.

Subsequently, the drawn reinforcing fiber bundles 30 are conveyed via the guides 8 and 9 on the same plane at intervals, and the resin is applied to the reinforcing fiber bundles 30 via the resin tank 3a. This resin tank 3a
Each reinforcing fiber bundle 30 is pressed so as to be sandwiched from above and below by one rotating drum 3b and independently rotating guide rollers 16 and 17 fixedly supported in the vicinity of the upstream and downstream sides of the rotating drum 3b. Thereby, the resin tank 3a has a structure in which a prescribed amount of resin can be applied to each reinforcing fiber bundle 30.

Each of the reinforcing fiber bundles 30 coated with the resin has guides 10 and 11 fixedly supported on the downstream side thereof,
A guide 18 that is independently rotated from the guides 12 and 13 fixedly supported at the inlet of the traverse section 4.
It is conveyed through -20, keeping the space | interval between each reinforcing fiber bundle 30 constant. At this time, while maintaining the initial tension of the reinforcing fiber bundle 30, each reinforcing fiber bundle 30 is carried into the traverse section 4 by being conveyed. In the traverse section 4, the reinforcing fiber bundles 30 are aligned and smoothly guided and guided via an integrally rotating guide roller 21.

At this time, the guides 6 to 21 for guiding and guiding the reinforcing fiber bundles 30 on the reinforcing fiber bundle conveying path are as follows:
The surface roughness of the fiber bundle contact surface is set to 30S or less, a plating treatment layer having a thickness of 100 μm or less is applied to the fiber bundle contact surface, and the surface hardness of the fiber bundle contact surface is set to 300 or more Brinell hardness. doing. For this reason, conveyance of each reinforcing fiber bundle 30 pulled out from each bobbin 2 can be smoothly performed with a small contact resistance. Thereby, guides 6-21 and each reinforcing fiber bundle 30
The friction resistance between the reinforcing fiber bundles 30 can be reduced, and the processability of each reinforcing fiber bundle 30 is improved.

As long as the surface roughness of the fiber bundle contact surface in at least the guides 6 to 21 is set to 30S or less, the fiber bundle contact surface is plated as described above, or the fiber bundle contact surface It is not necessary to set the surface hardness strictly.

  Subsequently, the aligned reinforcing fiber bundles 30 are simultaneously fed to the core material 5 and the aligned reinforcing fiber bundles 30 are wound around the core material 5 to form a precursor of a molded body (not shown). The precursor of the obtained molded body is cured under predetermined curing conditions, and a molded body as a final product is obtained.

Hereinafter, more specific examples of the present invention will be described with reference to Table 1 together with comparative examples.
First, the evaluation methods described in the examples and comparative examples will be described.
(1) Manufacturing procedure of pressure vessel sample for evaluation The above-mentioned guide as an object of the present invention is mounted on a filament winding machine manufactured by Entec Composite Machines Inc., and an actual molded body is formed. The same configuration as the case. In this way, about 10,000 m of reinforcing fiber bundles were passed over the guide at a tension of 30 N, so that the guide was subjected to wear conditions. Thereafter, a pressure vessel with a filling pressure of 30 MPa was produced by the following procedure.

  A reinforced fiber bundle 30 impregnated with resin is wound around a 9 liter aluminum container body (total length 540 mm, barrel length 415 mm, barrel outer diameter 163 mm, wall thickness 3 mm at the center of the barrel) as a core material, and fiber A reinforced resin layer was formed to obtain an intermediate container.

The fiber reinforced resin layer has a three-layer structure having a radial direction orientation layer / an axial direction orientation layer / a circumferential direction orientation layer from the inner surface side toward the outer surface side.

The intermediate container was placed in a heating furnace, and the temperature in the heating furnace was increased from room temperature to 135 ° C. at 1 ° C./min. After confirming that the surface temperature of the fiber reinforced resin layer reached 135 ° C., it was left for 1 hour. Thereafter, the furnace temperature was lowered to 60 ° C. at 1 ° C./min, and the container was taken out of the heating furnace and allowed to cool to the same temperature as room temperature to obtain a pressure vessel for evaluation.

(2) Measuring method of burst pressure (burst characteristics)
A pressure vessel for evaluation was set in a water pressure fracture tester manufactured by Mitsubishi Rayon Co., Ltd., the water pressure was applied at a pressure increase rate of 1.4 MPa or less, and the burst pressure when bursting was measured.
The materials used in Examples and Comparative Examples are as follows.

(3) Reinforcing fiber (a) Reinforcing fiber: Carbon fiber TRH5012L manufactured by Mitsubishi Rayon Co., Ltd. was used. This carbon fiber has a single fiber diameter of 7 μm, a filament number of 12,000, a strand strength of 4,900 MPa, an elastic modulus of 255 GPa, and an elongation of 1.9%.

(4) Matrix resin Resin: Resin of epoxy resin # 700B (composition epicoat 828 / XN1045 / BYKA506) manufactured by Mitsubishi Rayon Co., Ltd. was used.

(5) Tow prepreg (a) Tow prepreg: As a prepreg consisting of one tow, Newport Adhesives and Composite Ink. (NewportAdhesivesandCompos
itesinc. ) WDE-3D-1 (TRH50 12K) manufactured by the company was used.

  This tow prepreg is obtained by impregnating a matrix fiber into carbon fiber TRH50-12K manufactured by Mitsubishi Rayon Co., Ltd., having a width of about 4 mm and a resin content of about 28% by mass. The carbon fiber used has a single fiber diameter of 7 μm, a filament number of 12,000, a strand strength of 4900 MPa, and an elastic modulus of 255 GPa.

A pressure vessel with a filling pressure of 30 MPa was formed by the following manufacturing procedure.
Hard chromium plating with a thickness of about 30 μm was applied on the fiber bundle contact surface of a guide made of SUS304 stainless steel having a Brinell hardness of about 200. Thereafter, the surface of the fiber bundle contact surface was subjected to sand blasting to finish the surface roughness to about 10S. This guide is attached to the fiber-reinforced composite material manufacturing apparatus (FW) shown in FIG. 1, and the reinforcing fiber impregnated with the resin (4) (
An evaluation pressure vessel sample was obtained using 3).

At this time, the fluff of each reinforcing fiber bundle was hardly generated in the FW process, and the process passability of each reinforcing fiber bundle was excellently obtained. Next, when the measurement of the burst pressure was performed, 116 MPa
Met. The results are shown in Table 1.

A pressure vessel with a filling pressure of 30 MPa was formed by the following manufacturing procedure.
Hard chromium plating with a thickness of about 30 μm was applied on the fiber bundle contact surface of a guide made of SUS304 stainless steel having a Brinell hardness of about 200. Thereafter, the surface of the fiber bundle contact surface was polished to finish the surface roughness to about 2S or less. This guide was mounted on the fiber-reinforced composite material manufacturing apparatus shown in FIG. 1, and a pressure vessel sample for evaluation was obtained using the reinforcing fiber (3) impregnated with the resin (4).

At this time, a slight amount of fluff was generated in each reinforcing fiber bundle in the FW process, but the processability of each reinforcing fiber bundle was excellent. Next, when the measurement of the burst pressure was performed, 113 MPa
Met. The results are shown in Table 1.

A pressure vessel with a filling pressure of 30 MPa was formed by the following manufacturing procedure.
Sand blasting was applied to the fiber bundle contact surface of the guide made of SCM steel having a Brinell hardness of about 320 or more, and the surface roughness was finished to about 10S. This guide was attached to the fiber-reinforced composite material manufacturing apparatus (FW) shown in FIG. 1, and a pressure vessel sample for evaluation was obtained using the reinforcing fiber (3) impregnated with the resin (4).

At this time, the fluff of each reinforcing fiber bundle was hardly generated in the FW process, and the process passability of each reinforcing fiber bundle was excellently obtained. Next, the measurement of the burst pressure was 114 MPa.
Met. The results are shown in Table 1.

A pressure vessel with a filling pressure of 30 MPa was formed by the following manufacturing procedure.
On the fiber bundle contact surface of the guide made of SUS304 stainless steel having a Brinell hardness of about 200, a hard chrome plating with a thickness of about 30 μm was applied. Thereafter, the surface of the fiber bundle contact surface was subjected to sand blasting to finish the surface roughness to about 5S. This guide was attached to the fiber-reinforced composite material manufacturing apparatus (FW) shown in FIG. 1, and a pressure vessel sample for evaluation was obtained using the tow prepreg resin (5).

At this time, the fluff of each reinforcing fiber bundle was hardly generated in the FW process, and the process passability of each reinforcing fiber bundle was excellently obtained. Next, when measurement of the burst pressure was performed, 117 MPa
Met. The results are shown in Table 1.

Comparative Example 1

A pressure vessel with a filling pressure of 30 MPa was formed by the following manufacturing procedure.
The surface of the fiber bundle contact surface of the guide made of SUS304 stainless steel having a Brinell hardness of about 200 was polished to finish the surface roughness to about 2S or less. This guide was attached to the fiber-reinforced composite material manufacturing apparatus (FW) shown in FIG. 1, and a pressure vessel sample for evaluation was obtained using the tow prepreg resin (5).

At this time, considerable fluff was generated in each reinforcing fiber bundle in the FW process. After the sample was prepared, countless scratches were confirmed on the fiber bundle contact surface of the guide with which the reinforcing fiber bundle contacted.

Next, the measurement of the breaking pressure was 108 MPa. The results are shown in Table 1.

Comparative Example 2

A pressure vessel with a filling pressure of 30 MPa was formed by the following manufacturing procedure.
On the fiber bundle contact surface of the guide made of SUS304 stainless steel having a Brinell hardness of about 200, a hard chrome plating with a thickness of about 30 μm was applied. Thereafter, the surface of the fiber bundle contact surface was subjected to sand blasting to finish the surface roughness to about 35S. This guide is shown in Fig. 1.
The pressure vessel sample for evaluation was obtained using the reinforcing fiber (3) impregnated with the resin (4).

At this time, the generation of fluff in each reinforcing fiber bundle was extremely increased in the FW process, and the processability of each reinforcing fiber bundle was considerably deteriorated. Next, when the measurement of the burst pressure was performed, 98 MPa
Met. The results are shown in Table 1.

Thus, by managing the surface of the fiber bundle contact surface of the guide provided in the fiber reinforced composite material manufacturing apparatus of the present invention as described above, the damage to the reinforcing fiber bundle can be greatly reduced, and the strength It can be understood that a molded article with high expression can be obtained. Also,
By arranging the guide on the reinforcing fiber bundle, the processability of each reinforcing fiber bundle is also good, so it is possible to save labor in the process and greatly increase the cost of the molded product finally obtained. Can be reduced.

It is composition explanatory drawing which shows typically an example of the manufacturing apparatus of the fiber reinforced composite material which is typical embodiment of this invention. It is sectional drawing of the conventional fiber bundle feeding mechanism. It is a side view of the said fiber bundle feed mechanism when winding a fiber bundle in the direction along the axis line of a core material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fiber reinforced composite material manufacturing apparatus 2 (2a, 2b, 2c) Bobbin 3 Resin impregnation apparatus 3a Resin tank 4 Traverse part 5 Core materials 6-15, 22 Fixed guide 16-21 Rotating guide 30 Reinforcing fiber bundle

Claims (6)

A large number of bobbins each wrapped with a bundle of reinforcing fibers,
A core for winding a plurality of reinforcing fiber bundles drawn from each bobbin to form a product;
A guide for guiding and guiding each of the reinforcing fiber bundles arranged in a reinforcing fiber bundle conveying path from each bobbin to the core;
An apparatus for producing a fiber-reinforced composite material comprising:
The surface roughness of the fiber bundle contact surface in the guide with which the reinforcing fiber bundle comes into contact is 30 S or less determined by a standard sequence of the maximum height representing the surface roughness of the industrial product based on JIS standards. Manufacturing equipment for fiber reinforced composite materials. The manufacturing apparatus according to claim 1, wherein a plating treatment layer having a thickness of 100 μm or less is provided on a fiber bundle contact surface of the guide. The manufacturing apparatus according to claim 1 or 2, wherein a surface hardness of the fiber bundle contact surface in the guide has a Brinell hardness of 300 or more. The manufacturing apparatus according to claim 1, wherein the guide is cantilevered by a support member disposed on the reinforcing fiber bundle conveyance path. Pulling out reinforcing fiber bundles from multiple bobbins simultaneously,
Transporting each bundle of reinforcing fibers pulled out on the same plane with a guide,
Carrying into the traverse section while maintaining an interval between the reinforcing fiber bundles;
Each reinforcing fiber bundle is aligned and guided in the traverse section, and each aligned reinforcing fiber bundle is simultaneously fed to the core material, and the aligned reinforcing fiber bundle is wound around the core material and molded. ,
A method for producing a fiber-reinforced composite material comprising:
A guide having a surface roughness of a fiber bundle contact surface in the guide in contact with each reinforcing fiber bundle of 30S or less defined by a standard sequence of maximum heights representing a surface roughness of an industrial product based on JIS standards. Arranged in the reinforcing fiber bundle conveying path from each bobbin to the core material,
A method for producing a fiber-reinforced composite material, wherein each reinforcing fiber bundle drawn from each bobbin is conveyed in contact with a fiber bundle contact surface of the guide.   Using the method for producing a fiber-reinforced composite material according to claim 5, the fiber-reinforced composite material having a different orientation in the radial direction, the axial direction, and the circumferential direction from the inner surface side toward the outer surface side is molded from a fiber-reinforced resin layer having a three-layer structure. Pressure vessel.

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