JP5624755B2 - Filament winding method, fiber reinforced plastic long body manufacturing method, and filament winding apparatus - Google Patents

Description

  The present invention relates to a filament winding method for winding a filament around a long material, a method for manufacturing a long fiber-reinforced plastic, and a filament winding apparatus.

  FRP long products obtained by coating a long material with FRP are used as, for example, agricultural materials, fishery materials, and building materials. For example, Patent Document 1 discloses a fiber-reinforced hollow structure having a fiber-reinforced thermosetting resin layer including wound reinforcing fibers on the outer periphery. Such an FRP long product is obtained through a process of winding a filament around a long material. As a method for winding a filament around a long material, for example, a method for manufacturing a fiber reinforced resin tube described in Patent Document 2 is known. In the method of Patent Document 2, when the fibrous reinforcing material is wound around the outer periphery of the cylindrical core mold, the cylindrical core mold is rotated in the circumferential direction and the fiber is rotated in the direction opposite to the rotational direction of the cylindrical core mold. The feeding device is rotating.

JP 2004-330559 A JP 2001-270004 A

  When winding a multifilament around a long material, when the long material is continuously supplied or when the long material becomes large, rotating the long material in the circumferential direction as in Patent Document 2 described above Have difficulty. For this reason, the efficiency at the time of winding of a multifilament depends on rotation of the rotary body provided with roving. In order to increase the efficiency in such filament winding, the roving is easily deformed by the centrifugal force due to the rotating body acting on the roving. Such deformation of roving may require excessive tension when the multifilament is fed out, or the multifilament may rub against each other. That is, the deformation of the roving may make the feeding of the multifilament from the roving unstable. As described above, when the feeding of the multifilament becomes unstable, in the long material coated with FRP, there is a possibility that the variation in the composite ratio between the multifilament and the curable resin becomes large.

  The present invention has been made in view of such circumstances, and its object is to provide a filament winding method and a fiber reinforced plastic long body manufacturing method capable of improving the stability of continuous feeding of multifilaments from roving. And providing a filament winding apparatus.

In order to achieve the above object, the invention according to claim 1 is configured such that a rotating body on which a plurality of rovings formed by winding a multifilament in a cylindrical shape is rotated to be inserted into a central portion of the rotating body. And a filament winding method for winding the multifilaments fed from the plurality of rovings onto a long material continuously supplied along the axial direction of the rotating body, the inner circumference side of the plurality of rovings being with the axial direction of the rotating body to the axial direction of the plurality of rovings to fix the plurality of rovings to the rotating body so as to be parallel with the supporting state, the decremental from the outer circumferential side of the front Symbol plurality of rovings wherein the multifilament is a method of winding and guiding by the guide member provided on the rotating body to the long member, said The id member is located downstream of the roving in the supply of the elongate material, and the multifilament is positioned at a position on the outer peripheral side of the rotating body relative to an end edge of the roving that is the central side of the rotating body. The gist is to guide .

  For example, in the case where the outer peripheral side of the roving is supported and the multifilament is fed out from the inner peripheral side, the inner diameter of the roving increases as the multifilament is fed out. As a result, the roving is easily deformed in the radial direction. In this respect, as in the above-described invention, the deformation of the roving is suppressed by supporting the inner peripheral side of the roving and feeding the multifilament from the outer peripheral side.

  In addition, by rotating the roving to draw out the multifilament from the roving, the resistance when the multifilament is drawn out can be reduced, but the centrifugal force by the rotating body and the centrifugal force by the rotation of the roving are added to the roving. become. For this reason, roving becomes easy to change in the diameter direction. In addition, since the center of gravity of the roving is different for each roving, it is difficult to match the axis of rotation of the roving and the center of gravity of the roving, so that the balance of the center of gravity collapses with the rotation, Roving is easily deformed in the radial direction. In this regard, according to the above invention, since the roving is fixed to the rotating body, the centrifugal force due to the rotation of the roving does not act, and as a result, the deformation of the roving is suppressed.

According to a second aspect of the present invention, by rotating a rotating body on which a plurality of rovings formed by winding a multifilament in a cylindrical shape is rotated, the rotating body is inserted through the center of the rotating body and the axis of the rotating body A filament winding method in which the multifilaments fed from the plurality of rovings are wound on a long material continuously supplied along a direction, wherein the plurality of rovings are supported in a state where inner peripheral sides of the plurality of rovings are supported. The plurality of rovings are fixed to the rotating body so that the axial direction of the rotating body and the axial direction of the rotating body are parallel to each other, and the multifilament is unwound from the outer peripheral side of the plurality of rovings and wound around the long material. a method, among the plurality of rovings, in roving to be mounted adjacent said multi And summarized in that a pair of roving winding direction is the reverse direction by mounting each other Iramento.

  When the roving is fixed and the multifilament is continuously fed out from the outer peripheral side of the roving as described above, the multifilament is sequentially fed out while rotating in the direction opposite to the winding direction in the roving. Here, in the rovings mounted next to each other, when the winding directions thereof are the same as each other, the multifilaments wound around the roving are opposed to each other between the rovings mounted next to each other. Therefore, each multifilament easily collides front. As a result, the feeding of the multifilament may become unstable. In this regard, in the rovings installed next to each other, the winding directions of the multifilaments are opposite to each other, so that the multifilaments are fed out along the same direction between the rovings. Therefore, the feeding of each multifilament becomes smooth.

  The gist of a third aspect of the invention is the filament winding method according to the first or second aspect, wherein the long material is continuously supplied to the rotating body by extrusion molding of a resin material. .

  In a line where a long material is continuously supplied to a rotating body by extrusion molding of a resin material, the feeding of the multifilament becomes unstable, which may affect the extrusion molding. That is, the stop and restart of filament winding may significantly affect the yield due to the stop and restart in extrusion molding. In such a line, it is easy to increase the yield by applying the above-described filament winding method.

  According to a fourth aspect of the present invention, there is provided a method for producing a long fiber-reinforced plastic body by performing the filament winding method according to any one of the first to third aspects. And a step of curing the curable resin impregnated in the multifilament.

According to this manufacturing method, the fiber-reinforced plastic long body can be stably and continuously produced.
A filament winding apparatus according to a fifth aspect of the present invention includes a rotating body to which a plurality of rovings formed by winding a multifilament into a cylindrical shape is mounted, and is inserted through a central portion of the rotating body and A filament winding apparatus for winding the multifilaments fed from the plurality of rovings on a long material continuously supplied along an axial direction by rotation of the rotating body, and supporting an inner peripheral side of the plurality of rovings A core that fixes the plurality of rovings to the rotating body so that an axial direction of the plurality of rovings is parallel to an axial direction of the rotating body, and an outer periphery of the plurality of rovings provided on the rotating body and a guide member for guiding the multifilament fed from the side, the guide member, the Summarized in that a downstream side, and guiding the multi-filament at the position where the outer peripheral side of the rotor than the edge of the roving made of the center side of the rotating body in the supply of the long member than Bingu And

  According to this configuration, the deformation of the roving is suppressed by supporting the inner peripheral side of the roving and continuously feeding out the multifilament from the outer peripheral side. Moreover, since the roving is fixed to the rotating body, the centrifugal force due to the rotation of the roving does not act, and as a result, deformation of the roving is suppressed.

The invention according to claim 6 includes a rotating body to which a plurality of rovings formed by winding a multifilament into a cylindrical shape is mounted, and is inserted through the central portion of the rotating body and along the axial direction of the rotating body. A filament winding device that winds the multifilaments fed from the plurality of rovings to a long material that is continuously supplied by rotation of the rotating body, with the inner peripheral side of the plurality of rovings being supported. A core that fixes the plurality of rovings to the rotating body so that an axial direction of the plurality of rovings and an axial direction of the rotating body are parallel to each other, and provided on the rotating body, and is fed from the outer peripheral side of the plurality of rovings and a guide member for guiding the multifilament, the core, that the diameter is configured to be changed And effect.
According to this configuration, the above-described roving can be easily attached.

  ADVANTAGE OF THE INVENTION According to this invention, stability can be improved about continuous delivery of the multifilament from roving.

The fragmentary end elevation which shows schematic structure of the filament winding apparatus of this embodiment. The front view which shows schematic structure of the rotary body with which the roving was mounted | worn. The front view which shows schematic structure of the rotary body which changed the mounting | wearing aspect of roving. (A) is explanatory drawing which shows the relationship between the core of a diameter-reduced state, and roving, (b) is explanatory drawing which shows the roving fixed to the core of a diameter-expanded state.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the filament winding apparatus 11 of the present embodiment includes a main body portion 13 fixedly supported by a base 12 and a rotating body 14 rotatably supported by the main body portion 13. A plurality of rovings 21 are attached to the rotating body 14. The roving 21 has a cylindrical shape by winding a multifilament. The filament winding apparatus 11 is an apparatus for winding a multifilament around a long material 32 supplied from an extrusion molding apparatus 31. In the following description, it is assumed that the left side of FIG. 1 is the upstream side, the right side is the downstream side, and the long material 32 is conveyed from the upstream side to the downstream side.

  The long material 32 is extruded by, for example, an extrusion molding device 31 installed on the upstream side of the filament winding device 11. The extruded long material 32 is continuously carried into the main body 13 by a conveying means (not shown). The main body part 13 is formed with a transport part 13a penetrating from the upstream side toward the downstream side. The long material 32 is conveyed to the rotating body 14 through the conveyance unit 13a. An insertion portion 14 a through which the long material 32 carried from the conveyance portion 13 a is inserted is provided in the central portion of the rotating body 14 along the axial direction of the rotating body 14. The long material 32 is conveyed to the upstream side through the insertion part 14a. Thus, the long material 32 is continuously supplied to the filament winding apparatus 11 along the axial direction of the rotating body 14. In addition, since the long material 32 is continuously supplied from the extrusion molding apparatus 31, it cannot be rotated.

  As shown in FIGS. 1 and 2, a plurality of cores 15 for mounting a plurality of rovings 21 are fixed to the rotating body 14. Each core 15 protrudes from the downstream side to the upstream side, and the plurality of rovings 21 are fixed to the rotating body 14 by the core 15 so that the axial direction of the roving 21 and the axial direction of the rotating body 14 are parallel to each other. . In the present embodiment, the six rovings 21 are fixed by providing the six cores 15 at equal intervals in the circumferential direction of the rotating body 14. The roving 21 itself has a coreless structure made only of multifilaments.

As shown in FIG. 2, among the plurality of rovings 21, the winding directions D of the multifilaments are opposite to each other in the rovings 21 that are mounted adjacent to each other.
A multifilament is drawn out from the outer peripheral side of each roving 21. The rotating body 14 is provided with guide members 16 for guiding the multifilaments fed out from the roving 21 corresponding to the number of the rovings 21. Such a guide member 16 is provided so as to extend to the downstream side of the roving 21, and a guide hole through which the multifilament is inserted penetrates from the upstream side toward the downstream side. The multifilament through the guide hole is guided so as to form a predetermined angle with respect to the long material 32. Further, the tension of the multifilament reaching the long material 32 is adjusted by the guide hole. The guide member 16 is provided so as to be movable or detachable with respect to the rotating body 14, thereby avoiding an obstacle in mounting the roving 21.

  The rotating body 14 is rotationally driven by a driving device (not shown). The driving device is configured such that a driving force is transmitted to the rotating body 14 via a gear, a belt, a chain, or the like using a motor as a driving source.

  The multifilament is wound around the long material 32 by rotating the rotating body 14 described above. At this time, the long material 32 is conveyed downstream at a predetermined speed, so that the long material 32 around which a predetermined amount of multifilaments are wound per unit length can be obtained continuously.

  Here, for example, when supporting the outer peripheral side of the roving and feeding the multifilament from the inner peripheral side, the inner diameter of the roving increases as the multifilament is fed. As a result, the roving is easily deformed in the radial direction. In such a state, the roving is deformed by the centrifugal force of the rotating body 14, so that when the multifilament is drawn out on the inner periphery of the roving, the multifilaments rub against each other strongly, or excessive tension is applied to the multifilament. It will be. In this respect, in the present embodiment, the inner peripheral side of the roving 21 is supported by the core 15, so that deformation of the roving 21 in the radial direction is suppressed. Moreover, since the inner diameter of the roving 21 does not change due to the consumption of the multifilament by feeding the multifilament from the outer peripheral side of the roving 21, the deformation of the roving 21 is suppressed by the core 15 until the use of the multifilament is completed. Will come to be.

  In addition, by rotating the roving to draw out the multifilament from the roving, the resistance when the multifilament is drawn out can be reduced, but the centrifugal force by the rotating body and the centrifugal force by the rotation of the roving are added to the roving. become. For this reason, roving becomes easy to change in the diameter direction. In addition, since the center of gravity of the roving is different for each roving, it is difficult to match the axis of rotation of the roving and the center of gravity of the roving, so that the balance of the center of gravity collapses with the rotation, Roving is easily deformed in the radial direction. In this respect, in this embodiment, since the roving 21 is fixed to the rotating body 14, the centrifugal force due to the rotation of the roving 21 does not act, and as a result, the deformation of the roving 21 is suppressed.

  When the roving 21 is fixed as described above and the multifilament is continuously fed out from the outer peripheral side of the roving 21, the multifilament is fed out sequentially while circling the roving 21 in the direction opposite to the winding direction D. Become. At this time, as shown in FIG. 2, the multifilament excessively drawn out from the roving 21 circulates around the roving 21 due to centrifugal force and air resistance accompanying the rotational drive of the rotating body 14.

  Here, as shown in FIG. 3, the filament winding can be performed by attaching the winding directions D in the same direction in the rovings 21 installed adjacent to each other. In this case, the multifilament is sequentially drawn out while rotating around the roving 21 in the direction opposite to the winding direction D. At this time, in the rovings 21 that are mounted next to each other, the multifilaments that are drawn around the rovings 21 move so as to face each other between the rovings 21 as indicated by a two-dot chain line in FIG. Therefore, each multifilament easily collides front. As a result, the feeding of the multifilament may become unstable. In this regard, as shown in FIG. 2, in the rovings 21 that are mounted adjacent to each other, the winding directions D of the multifilaments are opposite to each other. As shown by a two-dot chain line, the multifilaments are drawn out along the same direction, so that the multifilaments are drawn out smoothly.

  As shown in FIG. 4A, the core 15 of the present embodiment is configured to be divided so as to be movable in the radial direction. The relative positions of the divided bodies constituting the core 15 can be changed by, for example, incorporating a toggle mechanism, a four-bar link or the like in the core 15. After the roving 21 is inserted into the core 15 in the reduced diameter state shown in FIG. 4 (a), the core 15 in the enlarged diameter state shown in FIG. . Thus, the roving 21 is fixed to the core 15 by the inner peripheral side of the roving 21 being supported by the core 15 in an expanded state. From the viewpoint of holding the roving 21 against the centrifugal force accompanying the rotational drive of the rotating body 14, as shown in FIGS. 2 and 3, the dividing line 15a for dividing the core 15 and the direction in which the centrifugal force is applied. It is preferable to equip the core 15 so that the direction is different from the radial direction passing through the rotation center of the rotating body 14.

  Thus, a long fiber-reinforced plastic body can be obtained from the long material 32 around which the multifilament is wound. That is, in order to obtain a long fiber reinforced plastic body, a step of curing a curable resin impregnated in the multifilament in the long material 32 around which the multifilament is wound is performed. In order to impregnate the multifilament with the curable resin, the filament winding is performed after the curable resin is attached to the outer peripheral surface of the long material 32 in advance. Thereby, on the outer peripheral surface of the long material 32, the multifilament is wound and the wound multifilament is impregnated with the curable resin.

  In addition, you may implement the process of impregnating curable resin to a multifilament in the post process of filament winding. In this case, a curable resin may be attached in advance to the long material 32 used for filament winding, or this attachment may be omitted.

  In the above filament winding, the material of the long material 32 is not particularly limited as long as a multifilament can be wound. Examples of the resin material constituting the long material 32 include ABS resin (acrylonitrile-butadiene-styrene resin), AS resin (acrylonitrile-styrene resin), AAS resin (acrylonitrile-acrylic-styrene resin), and AES resin (acrylonitrile-ethylene). -Styrene resin), PO resin (polyolefin resin), PS resin (polystyrene resin), PC (polycarbonate resin), PET resin (polyethylene terephthalate resin), PBT resin (polybutylene terephthalate resin), and PPE (modified polyphenylene ether resin) That is, a graft copolymer of polyphenylene and polystyrene). Moreover, the cross-sectional shape of the elongate material 32 is not specifically limited, For example, a solid shape may be sufficient and a tubular shape may be sufficient.

  Examples of monofilaments constituting the multifilament include inorganic fibers such as glass fibers and carbon fibers, and organic fibers such as polyamide fibers (particularly aramid fibers).

  The curable resin that forms the fiber reinforced plastic may be a thermosetting resin or an energy ray curable resin that is cured by energy rays such as ultraviolet rays. Examples of the curable resin include an epoxy resin and an unsaturated polyester resin.

  The long fiber-reinforced plastic body is cut into a predetermined length depending on the application. The usage of the long material 32 is not particularly limited, and examples thereof include agricultural materials, fishery materials, and building materials.

According to the embodiment described in detail above, the following effects are exhibited.
(1) The filament winding method of the present embodiment is performed in a state where the roving 21 is fixed to the rotating body 14. The roving 21 is supported on its inner peripheral side, feeds out multifilaments from the outer peripheral side, and winds the multifilaments around the long material 32. For this reason, deformation of the roving 21 is suppressed. Thereby, stability can be enhanced with respect to the feeding of the multifilament from the roving 21. As a result, the amount of multifilaments wound per unit length of the long material 32 is stabilized, and in the fiber reinforced plastic long body, variation in the composite ratio between the multifilament and the curable resin is reduced. . Therefore, in the long fiber reinforced plastic body, performance such as strength can be stabilized.

  (2) Among the plurality of rovings 21, the winding directions D are opposite to each other in the rovings 21 that are mounted adjacent to each other. Thereby, between each roving 21, a mutual multifilament is drawn out along the same direction. For this reason, the feeding of each multifilament becomes smooth. Therefore, it is possible to further improve the stability with respect to the feeding of the multifilament from the roving 21.

  (3) The long material 32 is continuously supplied to the rotating body 14 by extrusion molding of a resin material. Here, in the line in which the long material 32 is continuously supplied to the rotating body 14 by extrusion molding of a resin material, the feeding of the multifilament becomes unstable, which may greatly affect the yield. In this respect, the yield can be easily increased by applying the above filament winding method.

  (4) In the manufacturing method of the fiber reinforced plastic long body, the step of curing the curable resin impregnated in the multifilament in the long material 32 around which the multifilament is wound is performed. According to this manufacturing method, in the step of performing filament winding, the stability of continuous feeding of multifilaments is improved, and as a result, a continuous fiber-reinforced plastic can be stably produced.

  (5) The filament winding apparatus 11 includes a core 15 that fixes a plurality of rovings 21 and a guide member 16 that guides multifilaments fed out from the outer peripheral side of the plurality of rovings 21. According to the filament winding apparatus 11 configured as described above, the operational effects described in the above (1) can be obtained.

  (6) In the case of a core whose diameter cannot be changed, the roving is inserted into the core, and the roving is fixed by inserting a spacer into the gap between the outer peripheral surface of the core and the inner peripheral surface of the roving, for example. Become. Such a roving mounting operation is troublesome, and for example, the end face of the roving may be deformed when the spacer is inserted. Since the core 15 of the present embodiment is configured such that the diameter of the core 15 can be changed, the work of mounting the roving 21 is facilitated. In addition, since the roving 21 is fixed by changing the diameter of the core 15, it is easy to avoid deformation of the end surface of the roving 21.

The embodiment may be modified as follows.
As shown in FIG. 2, in each roving 21 of the above-described embodiment, all of the rovings that are mounted adjacent to each other are mounted with the winding direction D of the multifilament being reversed. For example, only the pair of rovings 21 that are mounted adjacent to each other may be mounted so that the winding direction D of the multifilaments is opposite to each other.

  As shown in FIG. 4A and FIG. 4B, the core 15 is divided into two parts along the axial direction. May be configured to be changeable. Moreover, you may comprise so that the radial dimension of a core can be changed partially by providing the protrusion member which protrudes from the outer peripheral surface of a core so that a movement along the radial direction of a core is possible.

  The number of rovings 21 (that is, the number of cores 15) is not particularly limited, but is preferably, for example, 4 or more from the viewpoint of increasing the efficiency of filament winding, and 6 from the viewpoint of miniaturization of the apparatus. The following is preferable. Further, in the filament winding apparatus 11, the filament winding may be performed by attaching a number of rovings 21 smaller than the number of cores 15.

An adjustment member (such as a guide roller) that adjusts the tension of the multifilament may be provided by stretching the multifilament on the guide member 16.
The long material 32 is continuously supplied to the rotating body 14 by extrusion molding of a resin material. However, a pre-formed long material 32 is prepared, and the long material 32 has the above-described characteristics. Filament winding may be performed.

  The filament winding may be performed a plurality of times by providing the filament winding device 11 together. For example, an FRP product with improved physical properties such as strength can be obtained by performing a plurality of filament windings in which the winding direction of the multifilament around the long material 32 is reversed. Further, in the pre-process or post-process of the filament winding, a multifilament or a monofilament may be integrated with the long material 32 so as to be along the axial direction of the long material 32.

  -In the fiber reinforced plastic long body, it is good also as a structure which provided the resin layer in the outer layer of the FRP layer. Further, the long material 32 may be formed from a single resin material or may be formed from a plurality of types of resin materials. For example, the long material 32 having a plurality of layers formed of different resin materials may be used.

  DESCRIPTION OF SYMBOLS 11 ... Filament winding apparatus, 14 ... Rotating body, 15 ... Core, 16 ... Guide member, 21 ... Roving, 32 ... Long material.

Claims (6)

By rotating a rotating body on which a plurality of rovings formed by winding a multifilament in a cylindrical shape is rotated, the rotating body is inserted through the central portion of the rotating body and continuously supplied along the axial direction of the rotating body. A filament winding method for winding the multifilament fed from the plurality of rovings on a long material,
While fixing the plurality of rovings to the rotating body so that the axial direction of the plurality of rovings and the axial direction of the rotating body are parallel to each other while supporting the inner peripheral side of the plurality of rovings ,
The multifilament was issued repeatedly from the outer circumferential side of the front Symbol plurality of rovings, and guided by the guide member provided on the rotating body is a method of winding the elongated member,
The guide member is located downstream of the roving in the supply of the long material, and the multifilament at a position closer to the outer peripheral side of the rotating body than an edge of the roving, which is a central side of the rotating body. Filament winding method characterized by guiding . By rotating a rotating body on which a plurality of rovings formed by winding a multifilament in a cylindrical shape is rotated, the rotating body is inserted through the central portion of the rotating body and continuously supplied along the axial direction of the rotating body. A filament winding method for winding the multifilament fed from the plurality of rovings on a long material,
While fixing the plurality of rovings to the rotating body so that the axial direction of the plurality of rovings and the axial direction of the rotating body are parallel to each other while supporting the inner peripheral side of the plurality of rovings,
It is a method of winding the multifilament from the outer peripheral side of the plurality of rovings and winding it around the long material,
Wherein among the plurality of rovings, in roving to be mounted adjacent, full I Lament Winding how to comprising a pair of roving mounted is a reverse winding direction of the multifilament each other. The filament winding method according to claim 1 or 2, wherein the long material is continuously supplied to the rotating body by extrusion molding of a resin material. The process of winding the said multifilament around the said elongate material by implementing the filament winding method as described in any one of Claims 1-3, The process of hardening the curable resin impregnated in the multifilament The manufacturing method of the fiber reinforced plastic elongate characterized by including these. A long body provided with a rotating body on which a plurality of rovings formed by winding a multifilament in a cylindrical shape is mounted, and is inserted through the central portion of the rotating body and continuously supplied along the axial direction of the rotating body A filament winding apparatus for winding the multifilament fed from the plurality of rovings on a material by rotation of the rotating body,
A core that fixes the plurality of rovings to the rotating body such that an axial direction of the plurality of rovings and an axial direction of the rotating body are parallel to each other while supporting an inner peripheral side of the plurality of rovings;
A guide member that is provided on the rotating body and guides the multifilament fed out from the outer peripheral side of the plurality of rovings ;
The guide member is located downstream of the roving in the supply of the long material, and the multifilament at a position closer to the outer peripheral side of the rotating body than an edge of the roving, which is a central side of the rotating body. Filament winding device characterized by guiding A long body provided with a rotating body on which a plurality of rovings formed by winding a multifilament in a cylindrical shape is mounted, and is inserted through the central portion of the rotating body and continuously supplied along the axial direction of the rotating body A filament winding apparatus for winding the multifilament fed from the plurality of rovings on a material by rotation of the rotating body,
A core that fixes the plurality of rovings to the rotating body such that an axial direction of the plurality of rovings and an axial direction of the rotating body are parallel to each other while supporting an inner peripheral side of the plurality of rovings;
A guide member that is provided on the rotating body and guides the multifilament fed out from the outer peripheral side of the plurality of rovings;
The core, full I Lament winding apparatus you characterized in that its diameter is configured to be changed.

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