JP2013000888A - Filament winding apparatus, and filament winding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the fiber layer in the vicinity of a cap from becoming large in thickness when fibers are wound around a gas tank using a multiple yarn supply method.SOLUTION: An FW apparatus 1 has a tank support device 11, helical winding heads 12 for supplying the fibers A to the gas tank 2 to perform helical winding and a control device 14. The helical winding heads 12 are arranged around the gas tank 2 in a concentric circular state and has: the guide ring 30 relatively movable in the tank axial direction X; a plurality of the guide cylinders 31 radially provided to the guide ring 30 with respect to the tank axis to supply the fibers A toward the gas tank 2; and a yarn supply port-moving device 33 for moving the yarn supply port 32 of the guide cylinder 31 in the tank axial direction Y before and behind. The control device 14 controls the before and behind movement of the yarn supply port 32 so that the position in the tank axial direction Y of the yarn supply port 32 of a part of the guide cylinder 31 becomes the rear side of the position of the yarn supply port 32 of another guide cylinder 31 when the guide ring 30 is present at the folding-back position of helical winding.

Description

The present invention relates to a filament winding apparatus and a filament winding method.

  For example, in a fuel cell system mounted on a vehicle such as an automobile, a gas tank is used as a fuel gas supply source.

  The manufacturing process of this type of gas tank has a process of forming a fiber reinforced resin (FRP (Fiber Reinforced Plastics)) layer on the outer periphery of a substantially ellipsoidal liner (inner container), which is usually thermosetting. This is done using a filament winding method in which fibers impregnated with resin are wound around a liner.

  In the filament winding method, a hoop winding that is wound in a direction perpendicular to the tank axis of a gas tank and a helical winding that is wound obliquely with respect to the tank axis are generally performed. A fiber reinforced resin layer is formed.

  By the way, the filament winding method includes a single yarn feeding method in which a bundle of fibers made of a plurality of fibers is wound around a liner, and a multi-feeding in which a plurality of fibers are wound around the liner simultaneously from multiple directions. There is a thread method. The multi-feed method can significantly reduce the time for winding the fiber around the liner as compared to the single-feed method (see Patent Documents 1 to 3).

JP 2009-119732 A JP 2010-090938 A Japanese Patent Application Laid-Open No. 2004-243749

  However, when the above-described multi-feeding method is used, for example, when the fibers A are wound around the folded portions at both ends of the tank 100 as shown in FIG. Since the wire 101 is wound at the same position on the boundary between the tank 101 and the tank body (liner) 102, the fibers A are concentrated on that portion. On the other hand, in the single yarn feeding method, as shown in FIG. 7B, the fibers A are bundled and fed together, so that the fibers A are slightly shifted one by one. As a result, when the multi-feed method is used, the thickness of the fiber layer in the vicinity of the base 101 increases as compared with the other portions, and eventually the tank shape in the vicinity of the base 101 is bulged or thickened. This is not preferable because the length of the divided mouthpiece 101 becomes unnecessary.

  The present invention has been made in view of the above points, and a filament winding apparatus and a filament winding method capable of suppressing a fiber layer near the base from becoming thick when fibers are wound around a tank using a multi-feed method. The purpose is to provide.

  In order to achieve the above object, the present invention is a filament winding apparatus, a tank support apparatus that supports a tank, and a helical winding head that performs helical winding by supplying fibers to the tank supported by the tank support apparatus And a control device for controlling the operation of the helical winding head, the helical winding head being arranged concentrically around the tank and movable relative to the tank in the tank axial direction. A guide ring, a plurality of guide cylinders that are provided radially to the tank shaft on the guide ring and feed fibers toward the tank, and a yarn feeder that moves the yarn feeder of the guide cylinder back and forth in the direction of the tank axis. A moving device, and the control device has a part of the guide when the guide ring is in a helical winding return position of the tank. Tank axial direction of the position of the yarn feeder to control the back and forth movement of the yarn feeder so that the rear side of a position of the tank axial direction of the yarn feeder of the other guide tube of a filament winding apparatus.

  According to the present invention, when the guide ring is in the position where the helical winding of the tank is turned back, the position of the yarn feeders of some guide cylinders in the tank axial direction is the position of the yarn feeders of other guide cylinders in the tank axial direction. As a result, the fibers fed from some yarn feeders are not supplied to the vicinity of the die at the end of the tank. Therefore, when a fiber is wound around a tank using the multi-feed method, it is possible to suppress the fiber layer near the base from becoming thick.

  In the filament winding apparatus, the control device moves the yarn feeder back and forth so that the guide tubes and the other guide tubes alternate along the guide ring when the guide ring is in the folded position. May be controlled.

  Another aspect of the present invention is a filament winding method in which fibers are supplied from a helical winding head to a tank supported by a tank support device, and the fibers are wound around the tank, and are arranged concentrically around the tank. While moving the guide ring of the helical winding head formed in the direction of the tank axis, fibers are fed from a plurality of guide cylinders radially provided to the guide ring toward the tank toward the tank, and the helical ring A step of winding, in the helical winding step, when the yarn feeder of the guide tube is moved back and forth in the axial direction of the tank, and when the guide ring is moved to the helical winding return position of the tank, The position of the yarn feeder of the guide cylinder in the tank axis direction is set behind the position of the yarn inlet of the other guide cylinder in the tank axis direction. Is an instrument winding method.

  In the filament winding method, the guide tube and the other guide tubes may be alternately positioned along the guide ring when the guide ring is in the folded position in the helical winding step.

  According to the present invention, when the fiber is wound around the tank using the multi-feed method, it is possible to suppress the fiber layer near the base from becoming thick. Shaped tank can be manufactured.

It is a schematic diagram which shows the outline of a structure of FW apparatus. It is a front view which shows the outline of a structure of a helical winding head. It is explanatory drawing which shows the state which has wound the fiber around the trunk | drum of a gas tank. It is explanatory drawing which shows the state of the helical winding head at the time of folding | turning. It is explanatory drawing which shows the case where the yarn feeder of a guide cylinder exists in a normal position at the time of return | turnback. It is explanatory drawing which shows the case where the yarn feeder of a guide cylinder exists in the position which retracted at the time of return | turnback. (A) is description which shows the state of the fiber of a nozzle | cap | die vicinity at the time of helically winding using a multiple yarn feeding method. (B) is description which shows the state of the fiber of a nozzle | cap | die vicinity at the time of helically winding using a single yarn feeding method.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing an outline of the configuration of a filament winding apparatus (hereinafter referred to as “FW apparatus”) 1 according to the present embodiment.

  The FW device 1 includes, for example, a base 10, a tank support device 11 that supports the gas tank 2, a helical winding head 12 that supplies the fiber A to the gas tank 2 supported by the tank support device 11 and performs helical winding, and a gas tank 2 includes a hoop winding head 13 that supplies the fiber A to the hoop 2 and performs hoop winding, a control device 14 and the like.

  The tank support device 11 includes, for example, a pair of shafts 20 that can be connected to the caps 3 at both ends of the gas tank 2, a pair of chucks 21 that hold the outer ends of the shafts 20, and a pair of supports that support the chucks 21. The column 22 and the support column 22 are fixed, and a moving table 23 that moves in the tank axial direction X with respect to the base 10 is provided. The chuck 21 is provided with a rotation drive source (not shown), and the gas tank 2 can be rotated by rotating the shaft 20. The moving table 23 is provided on a rail 24 provided on the base 10 along the tank axial direction X, and can be moved on the rail 24 by a driving source (not shown). Thereby, the gas tank 2 supported by the shaft 20 can be moved in the tank axial direction X.

  For example, as shown in FIG. 2, the helical winding head 12 is arranged concentrically around the gas tank 2, and a guide ring 30 that can move in the tank axial direction X, and is equally spaced along the guide ring 30 on the same circumference. And a plurality of guide cylinders 31 for supplying the fibers A toward the gas tank 2 and a yarn feeder moving device 33 for moving the yarn feeder 32 of the guide cylinder 31 back and forth in the axial direction Y of the tank.

  The guide cylinder 31 is provided radially toward the axis of the gas tank 2. Each guide cylinder 31 is fixed to the guide ring 30 by a cylinder holder 40. The fiber A is inserted through the guide cylinder 31 from the outside toward the tank axial direction Y, and the tip of the guide cylinder 31 on the gas tank 2 side is a yarn feeder 32.

  For example, as shown in FIG. 3, the yarn feeder moving device 33 includes a rack gear 50 provided on the outer surface of each guide cylinder 31, a pinion gear 51 combined with the rack gear 50, and a drive unit 52 that rotationally drives the pinion gear 51. The yarn feeder 32 of the guide cylinder 31 can be moved in the front-rear direction by rotating the pinion gear 51 by the drive unit 52. In the present embodiment, two types of gear ratios are used, and the guide cylinder 31 has different gear ratios along the guide ring 30 alternately. Accordingly, when the pinion gear 51 of each guide cylinder 31 is rotated by the same amount by the drive unit 52, the position of the yarn feeder 32 of the guide cylinder 31 on the guide ring 30 is alternately different.

  The helical winding head 12 is supported by a support member 60 fixed to the guide ring 30 as shown in FIG. The support member 60 is fixed to the base 10, for example.

  The hoop winding head 13 has, for example, a rotating ring 70 and a yarn supplying portion 71 provided on the rotating ring 70. The hoop winding head 13 is supported by a support member 72. The support member 72 is attached to a rail 73 along the tank axial direction X of the base 10 and can move along the rail 73.

  The control device 14 can control the operations of the helical winding head 12 and the hoop winding head 13 according to a program, and can execute a filament winding method to be described later on the gas tank 2.

  Next, a filament winding method using the FW device 1 will be described.

  First, as shown in FIG. 1, the gas tank 2 is supported by the tank support device 11. When the hoop winding is performed, the fiber 70 is supplied from the yarn supplying unit 71 to the gas tank 2 while the rotating ring 70 of the hoop winding head 13 rotates, and the hoop winding head 13 reciprocates in the tank axial direction X in this state. As a result, the fiber is wound around the surface of the gas tank 2 in a hoop manner.

  When performing helical winding, the gas tank 2 moves in the tank axial direction X with respect to the helical winding head 12 while the gas tank 2 is rotated. At this time, as shown in FIG. 2, one fiber A is supplied from each guide cylinder 31 of the helical winding head 12 to the gas tank 2 and wound. As shown in FIGS. 2 and 3, when the fiber A is wound around the body 2 a having the same diameter of the gas tank 2, the positions of the yarn feeders 32 of all the guide cylinders 31 are equidistant from the tank axis. . Each fiber A from each guide tube 31 is fed to the same circumference of the tank surface, that is, to the same position in the tank axial direction X, and the yarn feeding position moves in the tank axial direction X, so The fiber A is wound around the entire portion 2a.

  Next, when the fiber A is wound around the dome portion 2b with a gradually decreasing diameter of the gas tank 2, the guide cylinder 31 is moved in the tank axis direction Y so that the yarn feeder 32 of the guide cylinder 31 gradually approaches the tank axis. Advance. At this time, as shown in FIG. 4, the advance distance of the guide cylinder 31 is divided into two, and the guide cylinder 31 that advances largely on the guide ring 30 and the one that advances slightly on the alternate are alternated. When the helical winding return position, that is, when the gas tank 2 is turned back with respect to the helical winding head 12, the yarn feeder 32 of the half guide tube 31 is moved forward by the first distance D1 toward the base 3 as shown in FIG. Then, the fiber A is wound around the boundary portion P (the base portion of the base 3) between the base 3 and the tank body (liner) 80. Further, as shown in FIG. 6, the yarn feeder 32 of the remaining half of the guide cylinder 31 moves forward by a second distance D2 shorter than the first distance D1 to the base 3 side, and a boundary portion P between the base 3 and the tank body 80. It is wound around the position. Since the helically wound fiber A is wound obliquely with respect to the tank axis, the longer the advance distance of the yarn feeder 32, the closer to the boundary portion P between the base 3 and the tank body 80. By doing so, the fiber A fed from the half guide cylinder 31 is not supplied to the boundary portion P between the base 3 and the tank main body 80, and the helical winding of the tank end region R including the boundary portion P1 correspondingly. The thickness is reduced.

  Thus, when the gas tank 2 reciprocates with respect to the helical winding head 12, the fiber A is wound on the surface of the gas tank 2 in a helical manner. In the gas tank 2, hoop winding and helical winding are performed a predetermined number of times to form a fiber layer.

  According to the above embodiment, when the guide ring 30 is in the helical winding return position, the position of the yarn feeder 32 of the half guide cylinder 31 is more than the position of the tank axis than the position of the yarn feeder 32 of the other guide cylinder 31. Since it is on the rear side with respect to the direction, the fibers A from some yarn feeders 32 are not supplied near the base 3. Therefore, when the fiber A is wound around the gas tank 2 using the multi-feed method, it is possible to suppress the fiber layer near the base 3 from becoming thick. By changing the advance distance in the tank axial direction Y of some of the guide cylinders 31 as in the present embodiment, the fiber layer near the base 3 can be easily thinned.

  In the above embodiment, when the guide ring 30 is in the helical winding return position, the guide cylinder 31 with the advance distance D1 and the guide cylinder 31 with the advance distance D2 are alternately positioned along the guide ring 30. The fiber A can be wound around the gas tank 2 without any spots.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  For example, in the above embodiment, when the helically wound guide ring 30 is turned back, the guide cylinder 31 with a short advance distance is half of the whole, but the number can be arbitrarily selected. In the above embodiment, the gas tank 2 side moves in the tank axial direction X during helical winding, but the helical winding head 12 side may move in the tank axial direction X.

  The FW device 1 includes not only the fuel cell vehicle 1 but also vehicles such as natural gas vehicles and hybrid vehicles, as well as various mobile objects (for example, ships, airplanes, rockets, robots, etc.) and stationary equipment (housing, buildings). It can also be applied to the manufacture of gas tanks used in

DESCRIPTION OF SYMBOLS 1 FW device 2 Gas tank 3 Base 10 Base 11 Tank support device 12 Helical winding head 13 Hoop winding head 14 Control device 30 Guide ring 31 Guide cylinder 32 Yarn feed port 33 Yarn feed port moving device A Fiber X Tank axial direction Y Tank axial direction

Claims (4)

A filament winding device,
A tank support device for supporting the tank;
A helical winding head for performing helical winding by supplying fibers to the tank supported by the tank support device;
A control device for controlling the operation of the helical winding head,
The helical winding head is
A guide ring that is arranged concentrically around the tank and is movable relative to the tank in the tank axial direction;
A plurality of guide cylinders provided radially to the tank shaft in the guide ring, for feeding fibers toward the tank;
A yarn feeder moving device that moves the yarn feeder of the guide tube back and forth in the tank axis direction;
In the control device, when the guide ring is at the helical winding return position of the tank, the position of the yarn feeders of some guide cylinders in the tank axis direction of the yarn feeders of other guide cylinders A filament winding apparatus that controls the back and forth movement of the yarn feeder so as to be rearward of the position.   The said control apparatus controls the back-and-forth movement of the said yarn feeder so that the said some guide cylinder and other guide cylinders may alternate along the said guide ring when the said guide ring exists in a return position. 2. The filament winding apparatus according to 1. A filament winding method for supplying fibers from a helical winding head to a tank supported by a tank support device and winding the fibers around the tank,
While moving the guide ring of the helical winding head concentrically arranged around the tank in the tank axis direction, the guide ring is directed toward the tank from a plurality of guide cylinders provided radially with respect to the tank axis. Having a step of feeding the fiber and helically winding it,
In the helical winding step, when the yarn feeder of the guide cylinder is moved back and forth in the axial direction of the tank and the guide ring is moved to the helical winding return position of the tank, the tanks of the yarn feeders of some guide cylinders A filament winding method in which the position in the axial direction is set to the rear side of the position in the tank axial direction of the yarn feeder of another guide cylinder.   4. The filament winding method according to claim 3, wherein when the guide ring is in a folded position in the helical winding process, the part of the guide cylinders and the other guide cylinders are alternately positioned along the guide rings.

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