JP2021084355A - Filament winding machine - Google Patents

Abstract

To provide a filament winding device that can suppress the twisting of fiber bundles.SOLUTION: A filament winding device for simultaneously winding a plurality of fiber bundles F onto a liner L, is provided with: a plurality of fiber bundle supply units 12 having a plurality of bobbin holders 13 rotatably supporting a plurality of bobbins 14; and a plurality of nozzle units 53 radially arranged around the liner L and guiding a plurality of fiber bundles F drawn from the plurality of fiber bundle supply units 12 onto the liner L. The rotation axis of the plurality of bobbin holders 13 is parallel to the axis A of the liner L. When viewed from above, the plurality of bobbin holders 13 are arranged in a line on a virtual line B orthogonal to the axis A of the liner L and passing through the nozzle unit 53.SELECTED DRAWING: Figure 8

Description

The present invention relates to a filament winding device in which a plurality of fiber bundles are wound around a liner at the same time.

As a so-called multi-thread type filament winding device in which a plurality of fiber bundles are wound around a liner at the same time, for example, there is one disclosed in Patent Document 1. In the filament winding apparatus of Patent Document 1, creel stands are arranged on both sides of the winding apparatus main body, and a plurality of fiber bundles supplied from each creel stand are simultaneously wound around a liner by a helical head.

Japanese Patent No. 5809898

According to the arrangement configuration of the creel stand disclosed in Patent Document 1, the fiber bundle drawn from the bobbin of the creel stand first runs along the axial direction of the liner. Then, it is bent at a substantially right angle so as to run toward the helical head on the way, and finally is supplied from the helical head to the liner. At the place where the fiber bundle is bent, there is a possibility that the fiber bundle is twisted and damaged to cause thread breakage. Therefore, there is a problem that the twisting of the fiber bundle should be avoided as much as possible.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a filament winding device capable of suppressing twisting of a fiber bundle.

The present invention is a filament winding device that winds a plurality of fiber bundles around a liner at the same time, and has a plurality of fiber bundle supply units having a plurality of bobbin holders that rotatably support a plurality of bobbins, and arranged radially around the liner. A plurality of nozzle units for guiding a plurality of fiber bundles drawn from the plurality of fiber bundle supply units to the liner are provided, and the rotation axes of the plurality of bobbin holders are parallel to the axes of the liner. When viewed from above, the plurality of bobbin holders are arranged side by side on a virtual line orthogonal to the axis of the liner and passing through the nozzle unit.

In the present invention, the rotation axes of the plurality of bobbin holders are parallel to the axis of the liner, and the plurality of bobbin holders and the nozzle unit are arranged side by side on a virtual line when viewed from above. Therefore, the thread path from each bobbin to the liner via the nozzle unit can be configured without bending in the direction in which the fiber bundle is twisted. Therefore, according to the present invention, twisting of the fiber bundle can be suppressed.

In the present invention, the gathering guide for gathering the plurality of fiber bundles drawn from the plurality of bobbins in the axial direction of the liner is further provided, and the gathering guide is arranged on the virtual line when viewed from above. It should be done.

When a plurality of fiber bundles are wound around the liner at the same time, it is desirable that the gaps between the fiber bundles are as small as possible. In this respect, by providing the gathering guide, it becomes easy to supply a plurality of fiber bundles to the liner in a state where the gap between the fiber bundles is narrowed. In addition, since the gathering guides are also arranged on the virtual line, the bending of the thread path can be suppressed.

In the present invention, a plurality of guide guides for guiding the plurality of fiber bundles drawn from the plurality of bobbins to the gathering guides are further provided, and when viewed from above, the plurality of guide guides are on the virtual line. It is good that they are arranged side by side.

When the fiber bundles drawn from each bobbin directly reach the gathering guide, there is a possibility that the unwound fiber bundles interfere with each other while traversing in the axial direction of the bobbin. Therefore, by providing a guide guide between each bobbin and the gathering guide, the thread path of the fiber bundle drawn from each bobbin can be appropriately adjusted by the guide guide, and interference between the fiber bundles can be suppressed. Further, since each guide guide is also arranged on the virtual line, bending of the thread path can be suppressed.

In the present invention, it is preferable that at least one of the plurality of guide guides is arranged at a position different from that of the other guide guides in the vertical direction.

By making the heights of the guide guides different in this way, even if the bobbins are arranged at the same height, it is possible to prevent the fiber bundles from interfering with each other between the guide guides and the gathering guides. can do.

In the present invention, the gathering guide has a plurality of guide holes through which the plurality of fiber bundles are passed, and the plurality of guide holes are all formed at different positions in the axial direction. Good.

According to such a configuration, a plurality of fiber bundles gathered by the gathering guide can be arranged at desired intervals in the axial direction.

In the present invention, it is preferable that the plurality of guide holes are all formed at different positions in the vertical direction.

According to such a configuration, it becomes easy to prevent the fiber bundles gathered by the gathering guide from interfering with each other.

In the present invention, the gathering guide is arranged on one side in the vertical direction with respect to the plurality of bobbin holders, and among the plurality of fiber bundles, the fiber bundle pulled out from the bobbin closer to the gathering guide It is preferable that the guide holes are passed through the guide holes on the other side in the vertical direction among the plurality of guide holes.

According to such a configuration, as will be described in detail later, the yarn paths of the fiber bundles do not intersect, and interference between the fiber bundles can be prevented.

In the present invention, the plurality of bobbin holders are configured so that the bobbin can be attached and detached from one side in the axial direction, and among the plurality of guide holes, the guide hole on the other side in the axial direction is in the vertical direction. It is preferable that it is formed on the other side.

With such a configuration, as will be described in detail later, it becomes easy to pass each fiber bundle through the guide hole.

In the present invention, it is preferable that the guide hole in the center of the plurality of guide holes in the axial direction is formed on the othermost side in the vertical direction.

With such a configuration, as will be described in detail later, it is possible to prevent the fiber bundle unwound from the bobbin closest to the jumble guide from rubbing against the bobbin surface.

It is a perspective view which shows the filament winding apparatus which concerns on this embodiment. It is a block diagram which shows the electrical structure of the filament winding apparatus which concerns on this embodiment. It is a front view of a helical winding unit. It is a perspective view which shows typically the fiber bundle supply unit. It is a schematic diagram which looked at the fiber bundle supply unit from the front side. It is a perspective view which shows the pull-out roller. It is the figure which looked at the gathering guide from the right side. It is the figure which looked at the helical winding unit and the creel stand from the upper side. It is the figure which looked at the gathering guide which concerns on a modification example from the right side. It is a schematic view which looked at the bobbin closest to the gathering guide and the gathering guide from above.

(Filament winding device)
The filament winding apparatus according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a filament winding device according to the present embodiment. FIG. 2 is a block diagram showing an electrical configuration of the filament winding device according to the present embodiment. In the present specification, for convenience of explanation, the directional terms shown in FIG. 1 are appropriately used.

The filament winding device 1 is a multi-thread type in which a plurality of fiber bundles (not shown in FIG. 1) are wound around the liner L at the same time. The filament winding device 1 includes a winding device 2 and a pair of creel stands 3 arranged on the left and right sides of the winding device 2, and is configured substantially symmetrically as a whole. The winding device 2 is a device for winding a fiber bundle around a cylindrical liner L. The fiber bundle is, for example, a fiber material such as carbon fiber impregnated with a thermosetting or thermoplastic synthetic resin material. The shape of the liner L differs depending on the final product. For example, when the final product is a pressure tank, a liner L having dome portions on both sides of the cylindrical portion is used as shown in FIG. As the material of the liner L, high-strength aluminum, metal, resin or the like is used. After winding the fiber bundle around the liner L, a final product such as a high-strength pressure tank can be obtained by undergoing a thermosetting step such as firing or a cooling step.

The creel stands 3 are arranged on the left and right sides of the front and rear central portions of the winding device 2. Each creel stand 3 has a structure in which five upper and lower fiber bundle supply units 12 are arranged on a rectangular parallelepiped frame 11 extending in the left-right direction. Each fiber bundle supply unit 12 is provided with five bobbin holders 13 arranged in the left-right direction. Each bobbin holder 13 has a rotation axis extending in the front-rear direction, and rotatably supports the bobbin 14 on which the fiber bundle is wound. That is, each fiber bundle supply unit 12 is configured to supply five fiber bundles. The plurality of fiber bundles supplied from the creel stand 3 are wound around the liner L by a helical winding unit described later.

(Wrapping device)
The winding device 2 will be described. The winding device 2 includes a base 20, a support unit 30 (first support unit 31 and second support unit 32), a hoop winding unit 40, and a helical winding unit 50.

The base 20 supports the support unit 30, the hoop winding unit 40, and the helical winding unit 50. A plurality of rails 21 extending in the front-rear direction are arranged on the upper surface of the base 20. The support unit 30 and the hoop winding unit 40 can move in the front-rear direction along the rail 21. On the other hand, the helical winding unit 50 is fixed to the base 20. The first support unit 31, the hoop winding unit 40, the helical winding unit 50, and the second support unit 32 are arranged from the front side to the rear side in this order.

The support unit 30 has a first support unit 31 and a second support unit 32. The first support unit 31 is arranged in front of the hoop winding unit 40. The second support unit 32 is arranged behind the helical winding unit 50. The support unit 30 rotatably supports the liner L around the axis via a support shaft 33 extending in the axial direction (front-back direction) of the liner L. The support unit 30 has a moving motor 34 and a rotating motor 35 (see FIG. 2). The moving motor 34 moves the support unit 30 (first support unit 31 and second support unit 32) in the front-rear direction along the rail 21. The rotation motor 35 rotates the liner L around the axis by rotating the support shaft 33. The operations of the moving motor 34 and the rotating motor 35 are controlled by the control device 4.

The hoop winding unit 40 performs hoop winding on the peripheral surface of the liner L. The hoop winding is a winding method in which a fiber bundle is wound in a direction substantially perpendicular to the axial direction of the liner L. The hoop winding unit 40 has a main body 41, a rotating member 42, and a plurality of (five in this embodiment) bobbin holders 43. The main body 41 can move in the front-rear direction along the rail 21. The rotating member 42 is an annular member in which a passing hole 44 through which the liner L can pass is formed. The rotating member 42 is supported by the main body 41 in a state of being rotatable around the axis of the liner L. The plurality of bobbin holders 43 are attached to the rotating members 42 at equal intervals in the circumferential direction. Each bobbin holder 43 has a rotation axis extending in the front-rear direction, and rotatably supports a bobbin (not shown) on which a fiber bundle is wound.

The hoop winding unit 40 has a moving motor 46 and a rotating motor 47 (see FIG. 2). The moving motor 46 moves the main body 41 in the front-rear direction along the rail 21. The rotation motor 47 rotates the rotating member 42 around the axis of the liner L. The operations of the moving motor 46 and the rotating motor 47 are controlled by the control device 4. At the time of executing the hoop winding, the control device 4 rotates the rotating member 42 while reciprocating the main body 41 along the rail 21. As a result, fiber bundles are pulled out from each bobbin rotating around the liner L, and a plurality of fiber bundles are hoop-wound around the peripheral surface of the liner L at the same time.

The helical winding unit 50 performs helical winding on the peripheral surface of the liner L. The helical winding is a winding method in which a fiber bundle is wound in a direction substantially parallel to the axial direction of the liner L. The helical winding unit 50 includes a main body 51, a frame member 52, and a plurality of (nine in this embodiment) nozzle units 53. The main body 51 is fixed to the base 20. The frame member 52 is an annular member in which a passing hole 54 through which the liner L can pass is formed. The frame member 52 is supported by the main body 51. The plurality of nozzle units 53 are arranged radially around the axis of the liner L. Each nozzle unit 53 is attached to a frame member 52.

FIG. 3 is a front view of the helical winding unit 50. In detail, FIG. 3A shows a state in which the fiber bundle F is wound around the cylindrical portion of the liner L, and FIG. 3B shows the fiber bundle F wound around the dome portion of the liner L. It is the state which is illustrated. The nozzle unit 53 has a guide body 55 that guides the fiber bundle F to the liner L. The guide body 55 extends in the radial direction of the liner L (hereinafter, simply referred to as the radial direction), and is configured to be movable in the radial direction and rotatable around a rotation axis extending in the radial direction. A guide roller 56 is arranged on the radial outer side of each nozzle unit 53. The five fiber bundles F drawn out from each fiber bundle supply unit 12 of the creel stand 3 are introduced into one of the guide bodies 55 via the guide roller 56, and are supplied to the liner L from the tip of the guide body 55. Creel.

The helical winding unit 50 includes a guide moving motor 57 and a guide rotating motor 58 (see FIG. 2). The guide moving motor 57 moves each guide body 55 all at once in the radial direction. The guide rotation motor 58 rotates each guide body 55 all at once around the rotation axis. The operations of the guide moving motor 57 and the guide rotating motor 58 are controlled by the control device 4. At the time of executing the helical winding, the control device 4 slowly rotates the liner L around the axis to pass through the passing hole 54, and moves the guide body 55 of each nozzle unit 53 in the radial direction as appropriate and around the axis of rotation. Rotate. As a result, five fiber bundles F are appropriately pulled out from the tip of the guide body 55 of each nozzle unit 53, and a total of 45 fiber bundles F are helically wound around the peripheral surface of the liner L at the same time.

In this embodiment, as described above, 45 fiber bundles are used during helical winding. Therefore, as shown in FIG. 1, the bobbin 14 is not attached to the uppermost fiber bundle supply unit 12 of the right creel stand 3. That is, the fiber bundles are supplied from a total of 45 bobbins 14 mounted on the remaining nine fiber bundle supply units 12 excluding the fiber bundle supply unit 12.

(Fasciculation supply unit)
Next, the fiber bundle supply unit 12 will be described in detail. FIG. 4 is a perspective view schematically showing the fiber bundle supply unit 12. FIG. 5 is a schematic view of the fiber bundle supply unit 12 as viewed from the front side. 4 and 5 show a fiber bundle supply unit 12 provided on the creel stand 3 on the right side of FIG. The fiber bundle supply unit 12 provided on the creel stand 3 on the left side of FIG. 1 has the left-right orientation opposite to that of FIGS. 4 and 5. In FIG. 4, the fiber bundle is not shown.

The fiber bundle supply unit 12 includes beam members 11a to 11d (not shown in FIG. 5), five bobbin holders 13, five sets of drawer roller groups 15, and a tension adjusting mechanism 16. The beam members 11a to 11d are assembled in a rectangular shape when viewed from above, and form a part of the frame 11 of the creel stand 3. Each member constituting the fiber bundle supply unit 12 is attached to the beam members 11a to 11d via an appropriate bracket or the like.

The five bobbin holders 13 are arranged in a row in the left-right direction, and the positions in the up-down direction (vertical direction) are all the same. However, it is not essential that all the bobbin holders 13 have the same vertical position, and the vertical positions of the bobbin holders 13 may be slightly different. Each bobbin holder 13 is cantilevered and supported by a beam member 11c on the rear side, and has a rotation axis extending in the front-rear direction. The bobbin 14 is attached to and detached from the bobbin holder 13 from the front side of the bobbin holder 13. Further, in order to prevent the bobbin 14 from over-rotating, the bobbin holder 13 may have a built-in torque limiter.

The five sets of drawer roller groups 15 are provided on the downstream side of each bobbin holder 13 in the traveling direction of the fiber bundle F (hereinafter, referred to as the fiber bundle traveling direction). Each drawer roller group 15 has three drawer rollers 17 to 19 arranged in a V shape when viewed from the front side. The first drawer roller 17, the second drawer roller 18, and the third drawer roller 19 are arranged in order from the upstream side in the fiber bundle traveling direction. Each of the drawer rollers 17 to 19 is supported by both front and rear beam members 11a and 11c, and has a rotation axis extending in the front-rear direction. The fiber bundle F drawn from the bobbin 14 mounted on each bobbin holder 13 reaches the gathering guide 61 provided in the tension adjusting mechanism 16 via the corresponding drawing roller group 15.

As shown in FIG. 5, the second drawer roller 18 is supported by a rod 71 extending in the vertical direction, and the rod 71 is guided in the vertical direction by the guide member 72, so that the second drawer roller 18 moves in the vertical direction. It is movable. Further, the second drawer roller 18 is urged downward by the weight of itself. Therefore, when the tension of the fiber bundle F unwound from the bobbin 14 fluctuates or loosens, the second drawer roller 18 balances the tension of the fiber bundle F with the gravity of the second drawer roller 18. By moving in the vertical direction, fluctuations in tension and slack can be suppressed. The guide member 72 has a built-in proximity sensor that detects that the second drawer roller 18 has moved to the upper limit position. When the unwinding of the fiber bundle F occurs in the bobbin 14, the tension of the fiber bundle F rises, and the second drawer roller 18 moves to the upper limit position, it is detected by the proximity sensor. In this way, poor unwinding of the fiber bundle F can be detected.

Since the fiber bundle F is unwound while traversing in the axial direction (front-back direction) of the bobbin 14, each fiber bundle F swings in the front-rear direction while the fiber bundle F is wound around the liner L. Therefore, unless special measures are taken, the fiber bundles F may interfere with each other between each bobbin 14 and the tension adjusting mechanism 16. Therefore, in the present embodiment, the positions of the two third drawer rollers 19 on the right side in the vertical direction are higher than those of the three third drawer rollers 19 on the left side. More specifically, the second third drawer roller 19 from the right is slightly higher than the three third drawer rollers 19 on the left side, and the third drawer roller 19 on the far right side is further raised. By doing so, it is possible to prevent the fiber bundles F from interfering with each other. It should be noted that which third drawer roller 19 is raised and how much is appropriately adjusted according to the arrangement and configuration of the gathering guide 61 described later.

FIG. 6 is a perspective view showing the first drawer roller 17. The second drawer roller 18 and the third drawer roller 19 also have the same configuration as the first drawer roller 17. The first drawer roller 17 includes a pair of support members 75 arranged so as to face each other in the front-rear direction, and a plurality of shaft members 76 arranged between the pair of support members 75. Each support member 75 has a disk shape, and is rotatably attached to the beam members 11a and 11c around a support shaft 75a via a bracket (not shown). The plurality of shaft members 76 are arranged at equal intervals in the circumferential direction of the support member 75. Both ends of each shaft member 76 are rotatably supported by the support member 75. As described above, each shaft member 76 is configured to revolve around the support shaft 75a of the support member 75 and to rotate around its own central axis.

In a general roller having a cylindrical peripheral surface, the contact area between the fiber bundle and the roller is large, so if a part of the fiber bundle frays, there is a problem that the fiber bundle easily winds around the roller. It was. Therefore, the contact area between the fiber bundle and the shaft member 76 is increased by bringing the fiber bundle into contact with a plurality of shaft members 76 that are spaced apart from each other in the circumferential direction, as in the drawer rollers 17 to 19 of the present embodiment. It can be made smaller, and the fiber bundle can be prevented from being wound around the shaft member 76. It is considered that the winding of the fiber bundle can be prevented more effectively by configuring each shaft member 76 so that it can revolve and rotate, but each shaft member 76 can revolve or rotate at least. It should be.

As shown in FIGS. 4 and 5, the tension adjusting mechanism 16 is arranged at the left end of the fiber bundle supply unit 12 (the end closer to the helical winding unit 50), and adjusts the tension of the fiber bundle F. Has a function. Although detailed description of the tension adjusting mechanism 16 will be omitted, a gathering guide 61 is arranged on the most upstream side of the tension adjusting mechanism 16 in the fiber bundle traveling direction. The five fiber bundles F drawn from each bobbin 14 in one fiber bundle supply unit 12 are introduced into the tension adjusting mechanism 16 via the gathering guide 61, and the helical winding unit 50 is introduced via the tension adjusting mechanism 16. Is supplied to.

(Gathering guide)
FIG. 7 is a view of the gathering guide 61 as viewed from the right side. Hereinafter, the details of the gathering guide 61 will be described with reference to FIGS. 5 and 7. The gathering guide 61 is arranged on the left side and the upper side of the five bobbin holders 13 and the five drawer roller groups 15. Five guide holes 61a to 61e are formed in the gathering guide 61 in the front-rear direction. The guide holes 61a to 61e are diagonally arranged from the lower rear side to the upper front side. That is, the guide holes 61a to 61e are all formed at different positions in the front-rear direction and the up-down direction.

Each of the five fiber bundles F drawn from each bobbin 14 is passed through the guide holes 61a to 61e of the gathering guide 61. Specifically, the fiber bundle F pulled out from the bobbin 14 closer to the gathering guide 61 is passed through the lower guide hole. That is, the fiber bundle F drawn from the leftmost bobbin 14 is in the lowermost guide hole 61a, and the fiber bundle F drawn from the second bobbin 14 from the left is in the second guide hole 61b from the bottom, left. The fiber bundle F drawn from the third bobbin 14 from the bottom is in the third guide hole 61c from the bottom, the fiber bundle F drawn from the fourth bobbin 14 from the left is in the fourth guide hole 61d from the bottom, and The fiber bundle F drawn from the rightmost bobbin 14 is passed through the uppermost guide hole 61e. By doing so, as shown in FIG. 5, the thread paths of the fiber bundles F do not intersect with each other, and interference between the fiber bundles F can be prevented.

Next, a procedure for hanging the five fiber bundles F on the gathering guide 61 will be described with reference to FIG. When passing each fiber bundle F through the guide holes 61a to 61e of the gathering guide 61, the bobbin close to the gathering guide 61 so that the fiber bundle F that has already been passed through the guide hole does not interfere with the next work. It is preferable to pass the fiber bundles F of 14 through the guide holes 61a to 61e in order. Then, this work is performed from the side where the operator attaches / detaches the bobbin 14 to / from the bobbin holder 13, that is, from the front side of the fiber bundle supply unit 12.

Assuming that the lowermost guide hole through which the fiber bundle F is first passed is formed on the front side, the fiber bundle F is first passed through the guide hole on the front side (front side) when viewed from the operator. Will be done. Then, it is necessary to pass the remaining fiber bundle F through the guide hole while avoiding the fiber bundle F hung in front, which makes the work difficult. In this regard, as shown in FIG. 7, if the lower guide hole is arranged on the rear side, the fiber bundle F is passed through the guide hole in order from the back side when viewed from the operator. It is advantageous in that it can be performed smoothly.

(Arrangement of creel stand)
FIG. 8 is a view of the helical winding unit 50 and the creel stand 3 as viewed from above. FIG. 8 illustrates a part of the creel stand 3 on the right side of FIG. Further, each fiber bundle F actually swings in the front-rear direction between each bobbin 14 and the gathering guide 61 with the gathering guide 61 as a fulcrum, and in the drawer roller group 15 and the tension adjusting mechanism 16. Although it also travels in the vertical direction, it is simply shown in FIG.

As shown in FIG. 8, a virtual line B that is orthogonal to the axis A of the liner L and passes through the nozzle unit 53 of the helical winding unit 50 when viewed from above is defined. The five bobbin holders 13 (bobbin 14), the five drawer roller groups 15 (drawer rollers 17 to 19), and the gathering guide 61 included in the fiber bundle supply unit 12 are arranged in a row on the virtual line B when viewed from above. They are arranged side by side. Further, the rotation axes of the bobbin holder 13 and the drawer rollers 17 to 19 are parallel to the axis A of the liner L.

According to such an arrangement configuration of the creel stand 3, the thread path from the fiber bundle F drawn out from each bobbin 14 to the nozzle unit 53 is substantially linear along the virtual line B when viewed from above. .. In other words, the thread path from each bobbin 14 to the nozzle unit 53 does not become a thread path that bends at a substantially right angle in the middle as in Patent Document 1, for example. Therefore, it is possible to prevent the fiber bundle F drawn from each bobbin 14 from being twisted in the middle, and to wind the fiber bundle F around the liner L by the helical winding unit 50 in a state without twisting.

(effect)
In this embodiment, the rotation axes of the plurality of bobbin holders 13 are parallel to the axis A of the liner L, and the plurality of bobbin holders 13 and the nozzle unit 53 are arranged side by side on the virtual line B when viewed from above. Therefore, the thread path from each bobbin 14 to the liner L via the nozzle unit 53 can be configured without bending in the direction in which the fiber bundle F is twisted. Therefore, the twist of the fiber bundle F can be suppressed.

In the present embodiment, a gathering guide 61 for gathering a plurality of fiber bundles F drawn from the plurality of bobbins 14 in the axial direction of the liner L is further provided, and when viewed from above, the gathering guide 61 is a virtual line B. It is placed on top. When a plurality of fiber bundles F are wound around the liner L at the same time, it is desirable that the gap between the fiber bundles F is as small as possible. In this respect, by providing the gathering guide 61, it becomes easy to supply a plurality of fiber bundles F to the liner L in a state where the gap between the fiber bundles F is narrowed. Further, since the gathering guide 61 is also arranged on the virtual line B, the bending of the thread path can be suppressed.

In the present embodiment, a plurality of third drawer rollers 19 (corresponding to the guide guides of the present invention) for guiding the plurality of fiber bundles F drawn from the plurality of bobbins 14 to the guide 61 are further provided and viewed from above. At that time, a plurality of third drawer rollers 19 are arranged side by side on the virtual line B. When the fiber bundles F drawn out from each bobbin 14 reach the guide 61 directly, there is a possibility that the fiber bundles F unwound while traversing in the axial direction of the bobbin 14 may interfere with each other. Therefore, by providing the third drawer roller 19 between each bobbin 14 and the gathering guide 61, the thread path of the fiber bundle F drawn from each bobbin 14 can be appropriately adjusted by the third drawer roller 19, and the fiber bundle can be appropriately adjusted. Interference between Fs can be suppressed. Further, since each of the third drawer rollers 19 is also arranged on the virtual line B, bending of the thread path can be suppressed.

In the present embodiment, at least one of the plurality of third drawer rollers 19 is arranged at a position different from that of the other third drawer rollers 19 in the vertical direction. By making the heights of the third drawer rollers 19 different in this way, even if the bobbins 14 are arranged at the same height, the fibers are separated between the third drawer rollers 19 and the gathering guide 61. It is possible to prevent the bundles F from interfering with each other.

In the present embodiment, the gathering guide 61 has a plurality of guide holes 61a to 61e through which the plurality of fiber bundles F are passed, and the plurality of guide holes 61a to 61e are all in the axial direction of the liner L. It is formed in different positions. According to such a configuration, a plurality of fiber bundles F gathered by the gathering guide 61 can be arranged at a desired interval in the axial direction of the liner L.

In the present embodiment, the plurality of guide holes 61a to 61e are all formed at different positions in the vertical direction (vertical direction). According to such a configuration, it becomes easy to prevent the fiber bundles F gathered by the gathering guide 61 from interfering with each other.

In the present embodiment, the gathering guide 61 is arranged above the plurality of bobbin holders 13 (one side in the vertical direction), and is pulled out from the bobbin 14 of the plurality of fiber bundles F, which is closer to the gathering guide 61. The fiber bundle F is passed through the guide hole on the lower side (the other side in the vertical direction) of the plurality of guide holes 61a to 61e. According to such a configuration, as described in detail above, the thread paths of the fiber bundles F do not intersect, and interference between the fiber bundles F can be prevented.

In the present embodiment, the plurality of bobbin holders 13 are configured so that the bobbin 14 can be attached and detached from the front side (one side in the axial direction of the liner L), and the rear side (of the liner L) of the plurality of guide holes 61a to 61e. The guide hole (on the other side in the axial direction) is formed on the lower side. According to such a configuration, as described in detail above, it becomes easy to pass each fiber bundle F through the guide holes 61a to 61e.

In the present embodiment, a plurality (9) sets including a plurality (5) bobbin holders 13 and one nozzle unit 53 are provided, and the plurality of nozzle units 53 are arranged radially around the liner L. There is. According to such a configuration, a plurality of (five) fiber bundles F supplied from each nozzle unit 53 can be wound around the liner L at the same time, and the winding efficiency can be improved.

(Other embodiments)
A modified example in which various changes are made to the above embodiment will be described.

In the above embodiment, the drawer roller group 15 and the gathering guide 61 are provided between each bobbin 14 and the nozzle unit 53 of the helical winding unit 50 in the fiber bundle traveling direction. However, it is not essential to provide the drawer roller group 15 and the gathering guide 61, and it is possible to omit them.

In the above embodiment, as shown in FIG. 7, the guide holes 61a to 61e formed in the gathering guide 61 are diagonally arranged from the rear lower side to the front upper side, whereby the fiber bundle F is arranged in the guide holes 61a to 61e. The efficiency of passing work has been improved. However, it is not essential that the guide holes 61a to 61e are formed obliquely from the rear lower side to the front upper side. Hereinafter, one of the modified examples of the gathering guide will be described.

FIG. 9 is a view of the gathering guide 62 according to the modified example as viewed from the right side. The guide holes 62a to 62e formed in the gathering guide 62 are all formed at different positions in the front-rear direction and the up-down direction. The center guide hole 62c is formed on the lowermost side in the front-rear direction, and the guide holes 62a to 62e are arranged in a V shape as a whole. That is, the guide holes 62b and 62a are arranged diagonally upward and rearward from the guide hole 62c, and the guide holes 62d and 62e are arranged diagonally upward and rearward from the guide hole 62c. The merits of arranging the guide holes 62a to 62e in this way will be described.

FIG. 10 is a schematic view of the gathering guides 61 and 62 and the bobbin 14 closest to the gathering guides 61 and 62 as viewed from above, and the drawing of the drawer roller group 15 is omitted. FIG. 10a shows a case where the gathering guide 62 of the present modification is used, and FIG. 10b shows a case where the gathering guide 61 of the above embodiment is used.

As described in the above embodiment, the fiber bundle F drawn from the bobbin 14 closest to the gathering guides 61 and 62 is passed through the lowermost guide hole. That is, in this modification, as shown in FIG. 10a, the guide hole 62c is passed through the center, and in the above embodiment, as shown in FIG. 10b, the rearmost guide hole 61a is passed through. Will be done. The folding angles α, β, and γ formed with respect to the axis of the bobbin 14 when the fiber bundle F unwound from the bobbin 14 closest to the gathering guides 61 and 62 folds back at the end of the traverse region are in the other bobbin 14. It is smaller than the folding angle. As a result, the fiber bundle F unwound from the bobbin 14 closest to the gathering guides 61 and 62 tends to rub against the surface of the bobbin 14 when folded back at the end of the traverse region, and the fiber bundle F is easily damaged. In particular, the fold-back angles β and γ in the case of the above embodiment are different in the front-rear direction, and the fold-back angle γ on the front side is smaller than the fold-back angle β on the rear side. It is easy to occur.

In this respect, when the fiber bundle F unwound from the bobbin 14 closest to the gathering guide 62 is passed through the guide hole 62c in the middle as in this modification, the folding angle of the fiber bundle F is the same in the front and rear. The angle is α. Since this folding angle α is larger than the folding angle γ of the above embodiment, it is possible to prevent the folding angle of the fiber bundle F unwound from the bobbin 14 closest to the gathering guide 62 from becoming extremely small, and the fiber bundle can be prevented from becoming extremely small. It is possible to prevent F from rubbing against the surface of the bobbin 14. The "guide hole in the center" in the present invention means any of the two guide holes near the center when the number of guide holes is an even number.

1: Filament winding device 12: Fiber bundle supply unit 13: Bobbin holder 14: Bobbin 19: Third drawer roller (guide guide)
53: Nozzle unit 61, 62: Collecting guides 61a to 61e, 62a to 62e: Guide holes L: Liner F: Fiber bundle A: Liner shaft B: Virtual line

Claims (9)

A filament winding device that winds multiple fiber bundles around a liner at the same time.
A plurality of fiber bundle supply units having a plurality of bobbin holders that rotatably support a plurality of bobbins, and a plurality of fiber bundle supply units.
A plurality of nozzle units arranged radially around the liner and guiding a plurality of fiber bundles drawn from the plurality of fiber bundle supply units to the liner, and a plurality of nozzle units.
With
The rotation axes of the plurality of bobbin holders are parallel to the axis of the liner.
A filament winding device, wherein when viewed from above, the plurality of bobbin holders are arranged side by side on a virtual line that is orthogonal to the axis of the liner and passes through the nozzle unit. Further provided with a gathering guide for gathering the plurality of fiber bundles drawn from the plurality of bobbins in the axial direction of the liner.
The filament winding apparatus according to claim 1, wherein the gathering guide is arranged on the virtual line when viewed from above. A plurality of guide guides for guiding the plurality of fiber bundles drawn from the plurality of bobbins to the gathering guides are further provided.
The filament winding apparatus according to claim 2, wherein the plurality of guide guides are arranged side by side on the virtual line when viewed from above. The filament winding apparatus according to claim 3, wherein at least one of the plurality of guide guides is arranged at a position different from that of the other guide guides in the vertical direction. The gathering guide has a plurality of guide holes through which the plurality of fiber bundles are passed.
The filament winding apparatus according to any one of claims 2 to 4, wherein the plurality of guide holes are all formed at different positions in the axial direction. The filament winding apparatus according to claim 5, wherein the plurality of guide holes are all formed at different positions in the vertical direction. The gathering guide is arranged on one side in the vertical direction with respect to the plurality of bobbin holders.
6. The fiber bundle drawn from the bobbin closer to the gathering guide among the plurality of fiber bundles is passed through the guide hole on the other side in the vertical direction of the plurality of guide holes. The filament winding apparatus according to. The plurality of bobbin holders are configured so that the bobbin can be attached / detached from one side in the axial direction.
The filament winding apparatus according to claim 7, wherein the guide hole on the other side in the axial direction is formed on the other side in the vertical direction among the plurality of guide holes. The filament winding apparatus according to claim 7, wherein the guide hole in the middle of the plurality of guide holes is formed on the most opposite side in the vertical direction.

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