Abstract: A helical winding unit includes a plurality of guides arrayed in a peripheral direction of a liner, and adapted to guide each of a plurality of fiber bundles supplied to the helical winding unit to the liner, and an opening member arranged downstream of the plurality of guides in a travelling direction of the fiber bundle, and including an inner peripheral surface for forming a hole, through which the plurality of fiber bundles are inserted from one side to the other side in the axial direction. A plurality of opening surfaces on which the plurality of fiber bundles travel while making contact are formed on the inner peripheral surface of the opening member, and a cross-sectional shape orthogonal to the axial direction of each opening surface is linear.

Abstract: In a tank manufacturing method using a helical winding device that winds fiber bundles around a mandrel, the device includes: a first guide ring having an opening to pass the mandrel therethrough and placed around the mandrel with an axial center of the mandrel being taken as a center; and a plurality of first guide portions placed in the first guide ring along a circumferential direction around the axial center and configured to supply first fiber bundles to the mandrel. The method includes: moving the mandrel relative to the first guide ring along an axial center direction along the axial center such that the mandrel passes through the opening; and winding the fiber bundles around the mandrel while relatively moving the mandrel in the moving, by the first guide portions supplying the first fiber bundles to the mandrel with the first guide portions swinging in the circumferential direction.

Abstract: This bobbin unwinding device (32A (32B)) is provided with a bobbin support shaft (33) which rotatably supports a bobbin (B) around which a band-like fiber bundle (F) is wound, a fixed guide (35) which changes the running direction of the fiber bundle (F) unwound from the bobbin (B), and an auxiliary roller (34) arranged between the bobbin (B) and the fixed guide (35), wherein the fixed guide (35) is arranged such that the shaft center of the fixed guide (35) is substantially perpendicular to the shaft center of the bobbin support shaft (33), and the auxiliary roller (34) is arranged such that the shaft center of the auxiliary roller (34) is parallel or substantially parallel to the shaft center of the bobbin support shaft (33).

Abstract: With regard to a filament winding device in which a plurality of fiber bundles are simultaneously wound around a liner, a tension detecting portion and a tension adjusting portion are miniaturized, the cost of the tension detecting portion and the tension adjusting portion is reduced, and the tension detecting portion and the tension adjusting portion are easily arranged. Provided is a filament winding device 100 that includes a tension adjusting portion 110 that collectively adjusts tension of a plurality of fiber bundles F unreeled from a plurality of bobbins B and an unreeling failure detecting portion 130 that individually detects the unreeling failure of the fiber bundles F on the bobbins B for each bobbin B.

Abstract: A filament winding device (100) comprising a liner support device (42) supporting a liner (1), and a hoop winding device (43) that winds a fiber bundle (F) on to the outer peripheral surface (1S) of the liner (1) by rotating centered around the liner (1). The filament winding device (100) is characterized by being capable of simultaneously transporting the liner (1) and the hoop winding device (43), by having the liner support device (42) and the hoop winding device (43) arranged upon a trolley (40A), and moving the trolley (40A).

Abstract: There is provided a hoop winding device, comprising: a winding table configured to have an insertion hole formed to place a mandrel at a center thereof; a drive unit configured to rotate and drive the winding table; a plurality of supports on which bobbins with wound fibers are mounted, the plurality of supports being arranged along circumference of the winding table; a first guide section configured to bundle fibers drawn from a plurality of bobbins which constitute a first bobbin group out of the bobbins respectively mounted on the plurality of supports and feed the bundled fibers to the mandrel; and a second guide section configured to bundle fibers drawn from a plurality of bobbins which are not included in the first bobbin group but constitute a second bobbin group and feed the bundled fibers to the mandrel.

Abstract: A fiber bundle processing device (filament winding device (100)) that processes a fiber bundle (Fb) having a heat-curable resin impregnated therein, characterized by: comprising a curing device (45A) capable of applying heat to the fiber bundle (Fb); and the curing device (45A) curing or semi-curing some of the resin impregnated into the fiber bundle (Fb), when the fiber bundle (Fb) is partway through being guided into the fiber bundle processing device (filament winding device (100)).

Abstract: A chuck device of a fiber bundle includes a pair of hands adapted to be opened/closed. The pair of hands includes a plurality of guides adapted to regulate and bend the fiber bundle under a closing state, and to release the fiber bundle under an opening state. Under the closing state, the plurality of guides holds the fiber bundle by being close to each other with tension applied on the fiber bundle.

Abstract: A filament winding apparatus includes a hoop winding unit that is configured to hoop wind a plurality of fiber bundles on an outer surface of a liner of a tank by rotating along a circumferential direction of the liner while moving back and forth along an axial direction of the liner. The hoop winding unit includes a fiber-bundle guide assembly that is configured to rotate along the circumferential direction of the liner during the moving back and forth of the hoop winding unit, and to guide the plurality of fiber bundles to the outer surface of the liner.

Abstract: A filament winding apparatus that connects a driven shaft to a driving shaft automatically includes a rotation unit which can rotate a driving shaft 13 forward or reversely, a control unit which can control start or stop of the rotation of the driving shaft, and connection units which can connect a driven shaft attached to a liner to the driving shaft when phases of the driven and driving shafts are in agreement with each other. A fiber bundle is wound onto an outer peripheral surface of the liner by rotating the liner. A detection unit detects the phase of the driven or the driving shaft. Based on information obtained from the detection unit at the time of connecting the driven shaft to the driving shaft, the control unit rotates the driving shaft and adjusts the phase thereof to make the phases of the driven and driving shafts in agreement with each other.

Abstract: There is provided a fiber holding device, comprising: a bobbin supported to be rotatable about an axis and configured to hold a fiber wound thereon; a release member configured to apply a force to the fiber drawn from the bobbin in a direction from the axis of the bobbin toward outer periphery; a tension applying member configured to apply tension to the fiber drawn from the bobbin; and an extended section extended from the bobbin and arranged to integrally hold the release member and the tension applying member in a sequence of the release member and the tension applying member toward downstream in a drawing direction of the fiber.

Abstract: In a tank manufacturing method using a helical winding device that winds fiber bundles around a mandrel, the device includes: a first guide ring having an opening to pass the mandrel therethrough and placed around the mandrel with an axial center of the mandrel being taken as a center; and a plurality of first guide portions placed in the first guide ring along a circumferential direction around the axial center and configured to supply first fiber bundles to the mandrel. The method includes: moving the mandrel relative to the first guide ring along an axial center direction along the axial center such that the mandrel passes through the opening; and winding the fiber bundles around the mandrel while relatively moving the mandrel in the moving, by the first guide portions supplying the first fiber bundles to the mandrel with the first guide portions swinging in the circumferential direction.

Abstract: There is provided a hoop winding device, comprising: a winding table configured to have an insertion hole formed to place a mandrel at a center thereof; a drive unit configured to rotate and drive the winding table; a plurality of supports on which bobbins with wound fibers are mounted, the plurality of supports being arranged along circumference of the winding table; a first guide section configured to bundle fibers drawn from a plurality of bobbins which constitute a first bobbin group out of the bobbins respectively mounted on the plurality of supports and feed the bundled fibers to the mandrel; and a second guide section configured to bundle fibers drawn from a plurality of bobbins which are not included in the first bobbin group but constitute a second bobbin group and feed the bundled fibers to the mandrel.

Abstract: A filament winding method performs a hoop winding step including a first step of fixing an end of a fiber bundle to a liner surface at a starting position of hoop winding, a second step of hoop winding the fiber bundle having the end fixed to the liner surface in the first step, a third step of fixing the fiber bundle hoop wound in the second step to the liner surface at an ending position of hoop winding, and a fourth step of cutting the fiber bundle upstream in a fiber bundle supplying direction of the position where the fiber bundle is fixed in the third step.

Abstract: A filament winding apparatus includes a hoop winding unit that is configured to hoop wind a plurality of fiber bundles on an outer surface of a liner of a tank by rotating along a circumferential direction of the liner while moving back and forth along an axial direction of the liner. The hoop winding unit includes a fiber-bundle guide assembly that is configured to rotate along the circumferential direction of the liner during the moving back and forth of the hoop winding unit, and to guide the plurality of fiber bundles to the outer surface of the liner.

Abstract: With regard to a filament winding device in which a plurality of fiber bundles are simultaneously wound around a liner, a tension detecting portion and a tension adjusting portion are miniaturized, the cost of the tension detecting portion and the tension adjusting portion is reduced, and the tension detecting portion and the tension adjusting portion are easily arranged. Provided is a filament winding device 100 that includes a tension adjusting portion 110 that collectively adjusts tension of a plurality of fiber bundles F unreeled from a plurality of bobbins B and an unreeling failure detecting portion 130 that individually detects the unreeling failure of the fiber bundles F on the bobbins B for each bobbin B.

Abstract: There is provided a fiber holding device, comprising: a bobbin supported to be rotatable about an axis and configured to hold a fiber wound thereon; a release member configured to apply a force to the fiber drawn from the bobbin in a direction from the axis of the bobbin toward outer periphery; a tension applying member configured to apply tension to the fiber drawn from the bobbin; and an extended section extended from the bobbin and arranged to integrally hold the release member and the tension applying member in a sequence of the release member and the tension applying member toward downstream in a drawing direction of the fiber.

Abstract: A filament winding apparatus in which a fiber bundle easily passes through a fiber supplying guide. The filament winding apparatus winds a fiber bundle around a liner, and includes a plurality of fiber supplying guides each supplying a fiber bundle to the liner. Each of the fiber supplying guides includes a bottom portion that guides a wide surface of the fiber bundle, side portions respectively disposed along both sides of the bottom portion, and an opening portion formed between the side portions.

Abstract: A filament winding apparatus prevents a fiber bundle supplied to a liner from interfering with other fiber bundles and fiber supplying guides. First and second guide units include a plurality of fiber supplying guides arranged radially and extending and contracting in a direction approximately perpendicular to a liner central axis. When a fiber bundle supplied from a first supplying guide of the first guide unit crosses between a second supplying guide of the second guide unit and the liner, the distance from the second supplying guide to the liner central axis is made larger than the distance from the first supplying guide to the liner central axis, and in the reverse case, the distance from the first supplying guide to the liner central axis is made larger than the distance from the second supplying guide to the liner central axis.

Abstract: A filament winding apparatus prevents a fiber bundle supplied to a liner from interfering with other fiber bundles and fiber supplying guides. First and second guide units include a plurality of fiber supplying guides arranged radially and extending and contracting in a direction approximately perpendicular to a liner central axis. When a fiber bundle supplied from a first supplying guide of the first guide unit crosses between a second supplying guide of the second guide unit and the liner, the distance from the second supplying guide to the liner central axis is made larger than the distance from the first supplying guide to the liner central axis, and in the reverse case, the distance from the first supplying guide to the liner central axis is made larger than the distance from the second supplying guide to the liner central axis.