JP5937546B2 - Filament winding equipment - Google Patents

Description

  The present invention relates to a filament winding apparatus.

  A filament winding device (hereinafter, abbreviated as FW device as appropriate) is a device that winds a large number of fibers in the form of a fiber bundle around a fiber winding object such as a resin liner that is the core of a high-pressure gas tank. Widely used. In the FW device, it is necessary to fix the end of the fiber bundle to the already wound fiber bundle at the end of winding of the fiber bundle, and various fixing methods have been proposed (for example, Patent Document 1).

JP 2009-191927 A

  In the above-described fixing method of the fiber bundle, for the convenience of using a fixing member having a melting point higher than that of the thermosetting resin impregnated in the fiber included in the fiber bundle, the fixing member is attached to the fiber bundle, and the two steps of high and low are used. Heat treatment is required. For this reason, it came to be requested to simplify and simplify the fixing of the fiber bundle end. In addition, it is also required to improve the quality of the final product obtained by winding the fiber bundle with the FW device.

  In order to achieve at least a part of the problems described above, the present invention can be implemented as the following forms.

(1) According to one aspect of the present invention, a filament winding apparatus is provided. This filament winding apparatus is a filament winding apparatus for winding a large number of fibers around a fiber winding object in the form of a fiber bundle, and the fiber bobbin on which the fiber bundle has been wound can be sent out. The bobbin unit held on the fiber winding object and the fiber winding object are relatively reciprocated along the axis of the fiber winding object, and the supplied fiber bundle is moved to the outer surface of the fiber winding object in the reciprocation process. and the fiber winding portion for winding, the fiber bundle wound around the fiber 維巻times object by the fiber winding portion is brought into contact with the thermosetting resin solution, the state of contact between the thermosetting resin solution And an impregnation adjusting unit for adjusting the amount of impregnation of the thermosetting resin solution into the fiber bundle. Impregnation adjusting section in the fiber bundle end region in the winding end timing of the fiber bundle by fiber winding portion wound around the fiber 維巻times the object increases adjusting the amount of impregnation.

The form of filament winding apparatus, the fiber bundle end region wound around the fiber 維巻times the object at the winding end timing of the fiber bundle, since the state of impregnation of the thermosetting resin is increased adjusted, With this increased and impregnated thermosetting resin, the fiber bundle end region can be easily temporarily attached to the wound fiber bundle. On that basis, it can be fixed to the wound fiber bundle by thermosetting the thermosetting resin impregnated with increasing amount. Therefore, according to the filament winding apparatus of the above embodiment, other members for fixing the fiber bundle end region are not necessary, and the thermosetting treatment of the thermosetting resin for curing and fixing the fiber bundle is also performed once. It is easy because

  (2) In the filament winding apparatus of the above-described form, as the fiber winding unit, a hoop winding unit that hoops a fiber bundle around the fiber winding object, and a fiber bundle is helically wound around the fiber winding object. A helical winding portion, and the impregnation adjusting portion adjusts the impregnation amount in the fiber bundle end region in the helical winding portion to be larger than the impregnation amount in the fiber bundle end region in the hoop winding portion. Can be. In helical winding, the winding trajectory of the fiber bundle intersects the central axis of the fiber winding object at a low angle fiber angle (for example, about 11 to 25 °), and in hoop winding, it is almost perpendicular to the central axis. Intersect at a fiber angle close to (for example, about 89 °). Therefore, the helically wound fiber bundle is generally easier to slip than the hoop wound fiber bundle. In the filament winding apparatus of this embodiment, the slippery helically wound fiber bundle end region is in a state in which the amount of impregnation of the thermosetting resin is increased and adjusted as compared with the hoop wound fiber bundle. The fiber bundle end region can be easily and reliably temporarily fixed by the thermosetting resin impregnated in the helically wound fiber bundle. In addition, it can be reliably fixed by the wound fiber bundle by the thermosetting of the thermosetting resin impregnated and increased. For this reason, according to the filament winding apparatus of this embodiment, in the final product obtained through the helical winding and hoop winding of the fiber bundle, the displacement of the helically wound fiber bundle is suppressed, which can contribute to the improvement of product quality.

  (3) In the filament winding apparatus of the above-described form, the helical winding by the helical winding part and the hoop winding by the hoop winding part are repeated, and the helical layer and the hoop layer are alternately laminated on the fiber winding object. In addition to the adjustment of the amount of impregnation in the fiber bundle end region, the impregnation adjusting unit forms an outer layer-side helical layer during helical winding by the helical winding unit for forming an inner layer-side helical layer. The amount of impregnation can be adjusted more than in the case of helical winding by the helical winding portion. In this way, the thermosetting resin that is heavily impregnated in the helical layer formed on the inner layer side can permeate the helical layer formed on the outer layer side, so the thermosetting resin impregnated in the helical layer on the inner layer side. Resin can be used effectively.

  The present invention can be realized in various forms. For example, the present invention is configured as a manufacturing apparatus or a manufacturing method for a high-pressure gas tank in addition to a high-pressure gas tank in which a large number of fibers are wound around a liner in the form of a fiber bundle. You can also

It is explanatory drawing which shows typically schematic structure of the FW apparatus 100 as embodiment of this invention. 3 is an explanatory diagram showing a schematic positional relationship between a helical winding unit 100H, which is a main part of the FW device 100, and a bobbin unit 120 that feeds a resin-impregnated carbon fiber bundle W. FIG. It is explanatory drawing which shows typically the mode of formation of a fiber reinforced resin layer. It is explanatory drawing which shows the schematic structure of the fiber bundle resin impregnation distribution unit 150 by planar view. It is explanatory drawing which shows schematically the mode of the resin impregnation in the fiber bundle resin impregnation distribution unit 150 along the 5-5 line in FIG. It is explanatory drawing which shows schematically the structure of the resin impregnation unit 180, and the mode of resin impregnation from the side view. FIG. 5 is a procedure diagram showing a manufacturing process of the high-pressure gas tank T. FIG. 3 is an explanatory view showing the inner and outer resin layer portions of the fiber reinforced resin layer 20 in the high-pressure gas tank T together with the winding state of the resin-impregnated carbon fiber bundle W.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The filament winding apparatus (FW apparatus) of this embodiment is used when a high-pressure gas tank as a final product is manufactured, and a resin-impregnated carbon fiber bundle W is wound around a liner 10. FIG. 1 is an explanatory view schematically showing a schematic configuration of an FW device 100 as an embodiment of the present invention, and FIG. 2 is intended to send out a helical winding unit 100H and a resin-impregnated carbon fiber bundle W which are the main parts of the FW device 100. FIG. 3 is an explanatory view showing a schematic positional relationship with the bobbin unit 120, and FIG. 3 is an explanatory view schematically showing how the fiber reinforced resin layer is formed. In this embodiment, the high-pressure gas tank is a high-pressure hydrogen tank that stores high-pressure hydrogen.

  The FW device 100 uses a liner 10 of a resin container having a gas barrier property against hydrogen gas as a fiber winding object. The liner 10 includes a substantially cylindrical cylinder portion 10a having a uniform radius, and convex dome portions 10b provided at both ends of the cylinder portion. The dome portion 10b is configured by an isotonic curved surface, and has a base 14 for connecting to an external pipe or the like at the apex thereof. In the present embodiment, a resin container made of a nylon resin is used as the resin container. A resin container made of another resin may be used as long as it has a gas barrier property against hydrogen gas.

  The FW device 100 includes a liner shaft shaft 102, a helical winding unit 100H, a hoop winding unit 100F, a krill stand 110, a fiber bundle resin impregnation / distribution unit 150, and a control device 160. The liner shaft support shaft 102 is inserted into the caps 14 at both ends of the liner, and is held by a support stand 310 (described later) with the shaft protruding from both ends of the liner, and supports the liner 10 horizontally. After the liner 10 is pivotally supported in this manner, the FW device 100 winds the resin-impregnated carbon fiber bundle W around the outer periphery of the liner 10 by the helical winding unit 100H and the hoop winding unit 100F to form a fiber reinforced resin layer ( Fiber reinforced resin layer forming step). By this fiber reinforced resin layer forming step, an intermediate product tank having a fiber reinforced resin layer before resin curing on the outer periphery of the liner 10 is obtained, and this intermediate product tank is heat-treated using an induction heating device or the like (not shown). Thus, a high-pressure gas tank as a final product is obtained.

  As shown in a perspective view in FIG. 2, the helical winding unit 100 </ b> H includes an annular fiber bundle guide frame 202 that surrounds the liner 10 and is fixed to a base 300 with a fixed frame 204. This helical winding unit 100H has a fiber bundle guide frame along the tank central axis AX of the liner 10 so as to loop the resin-impregnated carbon fiber bundle W around the curved outer surface area of the dome portion 10b at both ends of the liner. 202 and the liner 10 are relatively reciprocally driven over a predetermined range including the outside of the dome portion 10b. That is, the fiber bundle guide frame 202 can be reciprocated with respect to the liner 10, and the liner 10 can be reciprocated with respect to the fiber bundle guide frame 202 while being horizontally supported. In the present embodiment, the helical winding unit 100H including the fiber bundle guide frame 202 is fixed to the base 300, and the liner 10 is reciprocated. However, in FIG. It was shown to reciprocate relative to the liner 10.

  The base 300 includes a first rail 302, a second rail 304, and a support base 310. The first rail 302 is a pair of grooves extending in the longitudinal direction of the base 300 and is formed on the upper surface (Y direction) of the base 300. The second rails 304 are a pair of grooves extending in the longitudinal direction of the base 300, and are the upper surfaces of the base 300 and outside the short side direction (Z direction) of the base 300 with respect to the first rail 302. Is formed.

  The support base 310 is disposed on the upper surface of the base 300 and supports the liner 10 together with the liner shaft shaft 102 described above so as to be rotatable. A pair of support bases 310 are prepared across the helical winding unit 100H and the hoop winding unit 100F, and rotate the liner 10 about the tank center axis AX. The pair of support bases 310 are driven to reciprocate on the first rail 302 along the longitudinal direction of the base 300 by a drive mechanism (not shown) to reciprocate the liner 10 relative to the fiber bundle guide frame 202. The support base 310 includes a base 312, support arms 314, and a chuck 316. The base 312 has a plate shape and is configured to be movable on the first rail 302 by being fitted to the first rail 302. The support arm 314 has a quadrangular prism shape and is provided so as to extend in the upward direction of the base 300. The chuck 316 is provided at the upper end of the support arm 314, in other words, at the end opposite to the side on which the support arm 314 is fixed to the base 312, and fixes the liner shaft 102.

  The fiber bundle guide frame 202 fixed to the base 300 includes a plurality of fiber bundle guides 210 radially around the through hole into which the liner 10 pivotally supported by the support base 310 enters. Each fiber bundle guide 210 receives a supply of a resin-impregnated carbon fiber bundle W from a fiber bundle resin-impregnated distribution unit 150, which will be described later, and the supplied resin-impregnated carbon fiber bundle W is used as the fiber bundle guide frame described above. In the process of the relative reciprocation of 202, the outer surface of the liner 10 is guided and wound.

  As shown in FIG. 1, the crill stand 110 is disposed on the left and right sides (upper and lower sides in the drawing) of the helical winding unit 100 </ b> H, and has a number of bobbins corresponding to the number of fiber bundle guides 210 provided on the fiber bundle guide frame 202. A unit 120 is included. Each bobbin unit 120 rotatably holds the fiber bobbin B on which the resin-impregnated carbon fiber bundle W has been wound, and the fiber bundle guide body of the helical winding unit 100H from these bobbins through the fiber bundle resin-impregnated distribution unit 150. A resin-impregnated carbon fiber bundle W is sent out to 210. In this case, the bobbin unit 120 can rotate the fiber bobbin B to send out the resin-impregnated carbon fiber bundle W under the control of the control device 160, and also can wind the resin-impregnated carbon fiber bundle W around the liner 10. The resin-impregnated carbon fiber bundle W may be sent out from the fiber bobbin B by the accompanying tensile force.

  The fiber bundle resin impregnation / distribution unit 150 impregnates the resin-impregnated carbon fiber bundle W sent out by each bobbin unit 120 again with a thermosetting resin, and then the resin-impregnated carbon fiber bundle W in the fiber bundle guide frame 202. The supplied individual fiber bundle guides 210 are supplied. The configuration of the fiber bundle resin impregnation / distribution unit 150 will be described later. If the helical winding unit 100H is configured to reciprocate with respect to the liner 10, the fiber bundle resin-impregnated distribution unit 150 moves in accordance with the reciprocating movement of the helical winding unit 100H, and each bobbin of the krill stand 110 is moved. The resin-impregnated carbon fiber bundle W from the unit 120 is sent out while being guided to the helical winding unit 100H.

  As shown in FIG. 3A, the helical winding unit 100H that receives the supply of the resin-impregnated carbon fiber bundle W in this way has a fiber angle at which the winding locus of the resin-impregnated carbon fiber bundle W is at a low angle with respect to the tank center axis AX. The resin-impregnated carbon fiber bundle W is wound by helical winding at a low angle that intersects at αLH (for example, about 11 to 25 °). This resin-impregnated carbon fiber bundle W is a multi-threaded carbon fiber bundle in which a plurality of sliver-like carbon single fibers are aligned to form a fiber bundle, and includes a thermosetting resin such as an epoxy resin between the single fiber surface and the single fibers. This is a so-called prepreg. During helical winding by the helical winding unit 100H, the liner 10 rotates around the tank center axis AX, and the rotational speed of the liner 10 and the reciprocating speed of the liner 10 with respect to the helical winding unit 100H are adjusted by the controller 160. In this low-angle helical winding, the resin-impregnated carbon fiber bundle W is repeatedly wound spirally so as to span the dome portions 10b at both ends of the cylinder portion 10a. In the dome portions 10b on both sides, the fiber winding direction is folded back along with the forward / return switching of the liner 10, and the folding position from the tank center axis AX is also adjusted.

  By repeating the wrapping in the winding direction at the dome portion 10b many times, a fiber winding layer in which the resin-impregnated carbon fiber bundle W is stretched in a mesh shape at a low angle fiber angle αLH is formed on the outer surface of the liner 10. It is formed. In this case, the relative reciprocation range of the helical winding unit 100H is such that the outer surface of almost the entire dome portion 10b is covered with the resin-impregnated carbon fiber bundle W, and then several layers of the above-described fiber winding layer are formed. The first few layers of fiber wound layers are the innermost helical layer located on the innermost layer side. In this case, hoop winding by a hoop winding unit 100F, which will be described later, is first repeated so as to form several fiber wound layers to form the innermost hoop layer, and then the innermost helical layer is formed by the helical winding unit 100H. May be formed.

  The hoop winding unit 100F is an annular body that surrounds the liner 10, and is approximately the length of the cylinder portion 10a along the tank center axis AX in the liner 10 so as to hoop the resin-impregnated carbon fiber bundle W around the outer periphery of the cylinder portion 10a. It reciprocates relatively over a corresponding predetermined range. In the process of relative reciprocation, the hoop winding unit 100F feeds the resin-impregnated carbon fiber bundle W from the plurality of hoop winding fiber bobbins FB built in the unit, and as shown in FIG. The resin-impregnated carbon fiber bundle W is wound by a hoop winding in which the winding locus of the bundle W intersects at a winding angle (fiber angle α0: for example, about 89 °) that is almost perpendicular to the tank center axis AX. By repeating this hoop winding while being folded at both ends of the cylinder portion, a hoop layer is formed so as to overlap the innermost helical layer. That is, by rotating the hoop winding unit 100F repeatedly at a predetermined speed along the tank center axis AX while rotating the liner 10 around the tank center axis AX, the hoop layer overlaps with the already formed helical layer. It is formed by winding with a resin-impregnated carbon fiber bundle W. The hoop winding unit 100F includes a resin impregnation unit 180 (see FIG. 4) described later. The resin impregnation unit 180 impregnates the resin-impregnated carbon fiber bundle W sent out from the hoop winding fiber bobbin FB with the resin. .

  A hoop in which a resin-impregnated carbon fiber bundle W is stretched in a mesh shape at a high angle fiber angle αLH on the outer surface of a helical layer that has already been formed by repeatedly folding back the winding direction in the cylinder portion 10a. A layer is formed. In this case, the relative reciprocating range of the hoop winding unit 100F is a range in which the resin-impregnated carbon fiber bundle W is repeatedly wound in the entire area of the cylinder portion 10a to form several layers of the above-described fiber winding layer. These several layers of wound fibers become a hoop layer.

  When changing from the low-angle helical winding by the helical winding unit 100H to the hoop winding by the hoop winding unit 100F, the resin impregnation is performed at a high fiber angle (for example, about 30 to 60 °) with respect to the tank center axis AX. A high-angle helical winding for winding the carbon fiber bundle W can also be incorporated.

  Thus, the hoop winding and the helical winding of the resin-impregnated carbon fiber bundle W are repeated properly and repeatedly, so that the hoop layer overlaps with the innermost helical layer on the outer periphery of the liner 10, and the helical layer and the hoop layer are alternately layered. A fiber reinforced resin layer in which multiple layers are overlapped is formed by the FW device 100. The formation of the helical layer and the hoop layer through repeated use of hoop winding and helical winding, and resin impregnation at that time will be described later.

  The control device 160 is configured as a so-called sequential computer including a CPU, a ROM, a RAM, and the like that perform logical operations. The control device 160 rotates the liner 10 supported on the support base 310, and the liner 10 with respect to the helical winding unit 100H and the hoop winding unit 100F. Various controls of the FW device 100 such as a reciprocating speed, a delivery state of the resin-impregnated carbon fiber bundle W from the bobbin unit 120, and an impregnation amount adjustment at the time of resin impregnation are integrated.

  Next, the configuration of the fiber bundle resin impregnation / distribution unit 150 and the thermosetting resin impregnation of the resin impregnated carbon fiber bundle W by the unit will be described. FIG. 4 is an explanatory view showing a schematic configuration of the fiber bundle resin impregnation / distribution unit 150 in plan view, and FIG. 5 shows the state of resin impregnation in the fiber bundle resin impregnation / distribution unit 150 along line 5-5 in FIG. FIG.

  As shown in the drawing, the fiber bundle resin impregnation / distribution unit 150 includes a resin solution tank 151, an upstream first guide roller 152, an upstream second guide roller 153, a downstream first guide roller 154, and a downstream first guide roller 152. Two guide rollers 155, a partition holding frame 156, a partition 157, a fiber bundle pressing roller 158, and a cylinder mechanism 159 are provided. The resin solution tank 151 stores a solution of a thermosetting resin having the same quality as the thermosetting resin (for example, epoxy resin) impregnated in the resin-impregnated carbon fiber bundle W. The fiber bundle resin impregnation / distribution unit 150 divides the resin solution storage area of the resin solution tank 151 by the partition 157 held by the partition holding frame 156, and the resin impregnated carbon fiber bundle W fed from the bobbin unit 120 is divided. In each bobbin unit, the upstream side first guide roller 152 and the upstream side second guide roller 153 guide each partition region. Then, the resin impregnated carbon fiber bundle W is subjected to resin impregnation in accordance with various control intentions, and the resin impregnated carbon fiber bundle W is guided by the downstream second guide roller 155 and the partition holding frame 156. While being supplied to the fiber bundle guide body 210 of the fiber bundle guide frame 202.

  The fiber bundle pressing roller 158 is positioned between the upstream side second guide roller 153 and the downstream side second guide roller 155 and moves up and down by a cylinder mechanism 159 that is driven up and down under the control of the control device 160. The fiber bundle pressing roller 158 is always in contact with the resin-impregnated carbon fiber bundle W in the fiber path of the resin-impregnated carbon fiber bundle W from the upstream second guide roller 153 to the downstream second guide roller 155. The resin-impregnated carbon fiber bundle W is pressed against the stored resin solution R in the resin solution tank 151 by vertical movement by the cylinder mechanism 159 and immersed. The resin-impregnated carbon fiber bundle W receives tension and is immersed in the stored resin solution R over a longer path by being pressed by the fiber bundle pressing roller 158, and each single fiber contained in the resin-impregnated carbon fiber bundle W Widen to widen the gap. The degree of widening and the immersion path length are determined by the degree of pressing by the fiber bundle pressing roller 158, that is, the contact state between the resin-impregnated carbon fiber bundle W and the stored resin solution R by this pressing. Therefore, the fiber bundle resin impregnation / distribution unit 150 heats the resin-impregnated carbon fiber bundles W from the respective bobbin units 120 through the vertical movement adjustment of the fiber bundle pressing roller 158 by the cylinder mechanism 159 controlled by the controller 160. While impregnating the curable resin again, the amount of resin impregnation is also adjusted.

  Next, the structure of the resin impregnation unit 180 that performs resin impregnation again in the hoop winding unit 100F and the thermosetting resin impregnation of the resin-impregnated carbon fiber bundle W by the unit will be described. FIG. 6 is an explanatory diagram schematically showing the configuration of the resin impregnation unit 180 and the state of resin impregnation in a side view.

  As shown in the figure, the hoop winding unit 100F has a plurality of streaks of resin-impregnated carbon that are pulled out from individual hoop winding fiber bobbins FB when the resin-impregnated carbon fiber bundle W is wound around the liner 10 along the winding path of the hoop winding. The fiber bundle W is collected by the guide roller group 181 to form a single resin-impregnated carbon fiber bundle W. The resin impregnation unit 180 includes a pickup roller 182, a roller vertical movement mechanism 183, a holding leg 184, in order to impregnate the resin-impregnated carbon fiber bundle W, which is defined by the guide roller group 181, with a thermosetting resin. And a fiber bundle clamp 185.

  The pickup roller 182 is disposed at the tip of the cylinder shaft of the roller vertical movement mechanism 183 fixed to the frame of the hoop winding unit 100F by the holding leg 184. The pickup roller 182 is lowered by the roller vertical movement mechanism 183 to the lower side of the resin-impregnated carbon fiber bundle W, which is defined by the guide roller group 181. At this time, the roller vertical movement mechanism 183 lowers the pickup roller 182 so as not to interfere with the resin-impregnated carbon fiber bundle W. Thereafter, the roller vertical movement mechanism 183 lifts the pickup roller 182 back to the original position, thereby lifting the resin-impregnated carbon fiber bundle W having a plurality of lines from the guide roller group 181 in a single line state.

  The fiber bundle clamp 185 can be moved back and forth on the back side and the front side in FIG. 6, and advances a single resin-impregnated carbon fiber bundle W lifted by the pickup roller 182 from the back side to the front side on the paper surface. And hold it. The fiber bundle clamp 185 is formed in a porous sponge shape, and is thermosetting having the same quality as a thermosetting resin (for example, epoxy resin) impregnated in the resin-impregnated carbon fiber bundle W from a resin supply device (not shown). The resin solution is supplied. Therefore, the resin impregnation unit 180 impregnates the resin-impregnated carbon fiber bundle W gripped by the fiber bundle clamp 185 with the thermosetting resin again, and adjusts the gripping force and the resin solution supply amount, so that the resin impregnation amount is also improved. adjust. The above-described impregnation of the thermosetting resin by the resin impregnation unit 180 is performed at the timing described later, and at that time, the liner 10 stops rotating. After the resin impregnation by the resin impregnation unit 180, the resin-impregnated carbon fiber bundle W is cut by a fiber cutter included in the resin impregnation unit 180, pulled out by the subsequent rotation of the liner 10, and wound around the liner 10. The

  Next, the manufacturing process of the high-pressure gas tank T using the FW device 100 having the helical winding unit 100H and the hoop winding unit 100F will be described. FIG. 7 is a procedure diagram showing the manufacturing process of the high-pressure gas tank T, and FIG. 8 is an explanatory diagram showing the inner and outer resin layer portions of the fiber-reinforced resin layer 20 in the high-pressure gas tank T together with the winding state of the resin-impregnated carbon fiber bundle W. It is.

  As shown in FIG. 7, in manufacturing the high-pressure gas tank T, first, the liner 10 is mounted on the support base 310 (see FIG. 2) (step S100). The control device 160 controls the drive device of the support base 310 to control the rotation of the liner 10 at a predetermined constant rotation speed. When the rotation speed is constant, the liner 10 reciprocates along the tank center axis AX. The resin-impregnated carbon fiber bundle W is sent out from the fiber bundle guide body 210 of the helical winding unit 100H, and the low-angle helical winding is repeated to form a plurality of layers as shown in FIG. 3A (step S110). As a result, a plurality of innermost low-angle helical layers 20 </ b> H are formed on the outer surface of the liner 10. In FIG. 8, the low-angle helical layer 20H is represented as a single layer. The rotational speed of the liner 10 and the reciprocating speed along the tank center axis AX are adjusted to a speed in accordance with the low-angle helical winding.

  The control device 160 determines the helical of the resin-impregnated carbon fiber bundle W for forming the low-angle helical layer 20H based on the elapsed time from the start of the low-angle helical winding, the rotational speed / reciprocating speed of the liner 10, and the like. It is determined whether or not the winding end timing has been reached (step S120). The helical winding in step S110 is continued until an affirmative determination is made here. If an affirmative determination is made in step S120, control device 160 adjusts the increase in the amount of impregnation of the thermosetting resin (step S130). The control device 160 lowers the fiber bundle pressing roller 158 shown in FIG. As a result, the resin-impregnated carbon fiber bundle W has been impregnated with resin because it is a prepreg. However, since the resin-impregnated carbon fiber bundle W is again impregnated with thermosetting resin, the fiber bundle wound around the liner 10 at the end of helical winding In the terminal region, the resin impregnation amount increases. Then, the resin-impregnated carbon fiber bundle W in the fiber bundle end region in an increased amount of impregnation is helically wound around the liner 10 and then cut by a cutting device (not shown) or an operator. Alternatively, the resin-impregnated carbon fiber bundle W is further fed out while being helically wound around the liner 10 in the fiber bundle end region, and extends to the side of the liner 10 to prepare for the next helical winding.

  In the present embodiment, in addition to the increase adjustment of the resin impregnation amount at the winding end timing of the helical winding, the resin bundle impregnation amount is adjusted by the fiber bundle resin impregnation / distribution unit 150 as follows even while the helical winding is continued. adjust. As shown in FIG. 8, a plurality of low-angle helical layers 20 </ b> H are formed from the outer surface side of the liner 10. In the present embodiment, the resin impregnation amount of the resin-impregnated carbon fiber bundle W is adjusted with the low-angle helical layer 20H on the inner layer side close to the outer surface of the liner 10 and the low-angle helical layer 20H on the outer layer side. When forming the three low-angle helical layers 20H on the inner layer side among the five low-angle helical layers 20H shown in FIG. 8, the controller 160 presses the fiber bundle as shown by the solid line in FIG. The roller 158 is lowered halfway through the stroke. As a result, in the three low-angle helical layers 20H on the inner layer side, the resin impregnation amount of the resin-impregnated carbon fiber bundle W is adjusted to be increased although it is less than the resin impregnation amount at the winding end timing of the helical winding. . On the other hand, when forming the two low-angle helical layers 20H on the outer layer side among the five low-angle helical layers 20H shown in FIG. Retreat above the R level. Thereby, in the two low-angle helical layers 20H on the outer layer side, the resin impregnation amount of the resin-impregnated carbon fiber bundle W remains the resin impregnation amount at the time of the prepreg. Therefore, the amount of resin impregnation in the helical winding when forming the low-angle helical layer 20H on the inner layer side is adjusted more than the case of helical winding when forming the low-angle helical layer 20H on the outer layer side. The fiber bundle W is helically wound around the liner 10.

  After the helical winding described above, the control device 160 adjusts the rotational speed and reciprocating speed of the liner 10 to a speed according to the high-angle hoop winding, and then the guide roller group 181 of the hoop winding unit 100F (FIG. 6). 3), the resin-impregnated carbon fiber bundle W is fed out in a straight line, and the high-angle hoop winding is repeated to form a plurality of layers as shown in FIG. 3B (step S140). Thus, a plurality of high-angle hoop layers 20F are formed on the outer surface of the liner 10 so as to overlap the innermost low-angle helical layer 20H. In FIG. 8, this high-angle hoop layer 20F is also represented as a single layer.

  Based on the elapsed time since the start of the high-angle hoop winding, the rotational speed / reciprocating speed of the liner 10, etc., the control device 160 hoops the resin-impregnated carbon fiber bundle W for forming the high-angle hoop layer 20 </ b> F. It is determined whether or not the winding end timing has been reached (step S150). The hoop winding in step S140 is continued until an affirmative determination is made here. If an affirmative determination is made in step S150, control device 160 adjusts the increase in the amount of impregnation of the thermosetting resin (step S160). In this adjustment for increasing the amount of impregnation, the controller 160 lifts a single resin-impregnated carbon fiber bundle W with the pickup roller 182 shown in FIG. A thermosetting resin is impregnated, and the amount of resin impregnation is increased in the fiber bundle end region wound around the liner 10 at the end of winding of the hoop winding. The amount of resin impregnation at the winding end timing of the hoop winding is that the impregnation is gripping by the fiber bundle clamp 185, so that the amount of resin impregnation through immersion in the stored resin solution R at the end timing of the helical winding is as follows. Less. Then, the resin-impregnated carbon fiber bundle W in the fiber bundle end region in a state where the impregnation amount is increased is cut by a fiber cutter included in the resin impregnation unit 180 and pulled out by the subsequent rotation of the liner 10 to be hooped to the liner 10. It is wound. Alternatively, the resin-impregnated carbon fiber bundle W is further fed out while being hoop-wound around the liner 10 in the fiber bundle end region, and extends to the side of the liner 10 to prepare for the next hoop winding.

  The control device 160 determines whether or not the repetition of the helical winding and the hoop winding has been completed (step S170), and repeats the above-described helical winding and hoop winding separately until an affirmative determination is made. Therefore, as shown in FIG. 8, the fiber reinforced resin layer 20 on the outer surface of the liner 10 is impregnated from the outer peripheral side of the liner 10 with the low-angle helical layer 20H of the resin-impregnated carbon fiber bundle W by helical winding and the resin impregnation by hoop winding. The high angle hoop layers 20F of the carbon fiber bundles W are alternately laminated. In the figure, for convenience of illustration, each resin layer portion includes a single resin-impregnated carbon fiber bundle W. However, in each resin layer, as described above, resin in hoop winding and helical winding is used. By winding the impregnated carbon fiber bundle W a plurality of times, the plurality of resin-impregnated carbon fiber bundles W are overlapped by hoop winding and helical winding. In FIG. 8, since the tank including the tank center axis AX is viewed in a cross section in the longitudinal direction, the resin-impregnated carbon fiber is used in the high-angle hoop layer 20F whose fiber orientation is about 89 ° based on hoop winding. The bundle W is viewed in cross-section in a substantially circular shape cut so as to intersect the fibers. On the other hand, in the low-angle helical layer 20H having a fiber orientation of about 11 to 25 ° based on the helical winding with a low angle, the resin-impregnated carbon fiber bundle W is viewed in cross-section in a rectangular shape cut along the fiber longitudinal direction. .

  When the control device 160 makes an affirmative determination that the repetition of the helical winding and the hoop winding has been completed, it stops the rotation of the liner 10 and puts the liner 10 in a position where it does not interfere with the helical winding unit 100H and the hoop winding unit 100F. Move. As a result, the liner 10 is removed from the FW device 100, subjected to a heat curing treatment of a thermosetting resin by a heating device (not shown), and subjected to cooling curing, whereby the liner 10 is reinforced with the fiber reinforced resin layer 20. A coated high-pressure gas tank T is obtained.

  As described above, the FW device 100 of the present embodiment has the resin-impregnated carbon by the hoop winding unit 100F at the winding end timing of the helical winding of the resin-impregnated carbon fiber bundle W by the helical winding unit 100H (step S130). The state in which the amount of the thermosetting resin impregnated is adjusted to increase the fiber bundle end region of the resin-impregnated carbon fiber bundle W wound around the liner 10 at the end timing of the hoop winding of the fiber bundle W (step S160). And Therefore, according to the FW device 100 of the present embodiment, the fiber bundle end region at the time of helical winding and the fiber bundle end region at the time of hoop winding are already wound with an increased impregnation amount of thermosetting resin. Each of the helically wound fiber bundles and the wound hoop wound fiber bundles can be easily temporarily fixed. Further, according to the FW device 100 of the present embodiment, the fiber bundle can be fixed to the wound fiber bundle by thermosetting the increased amount of thermosetting resin. As a result, according to the FW device 100 of the present embodiment, no other member specialized for fixing the fiber bundle end region of the resin-impregnated carbon fiber bundle W is required, and the resin-impregnated carbon fiber bundle W is cured and fixed. Since the thermosetting treatment of the thermosetting resin for the purpose is only once, the tank manufacturing process can be simplified. Moreover, since the other member is not required, it is unnecessary to attach the member to the fiber bundle, which can contribute to cost reduction.

  The FW device 100 according to the present embodiment uses the resin impregnation amount at the end of helical winding of the resin-impregnated carbon fiber bundle W by the helical winding unit 100H (step S130), and the resin-impregnated carbon fiber bundle W by the hoop winding unit 100F. More than the amount of resin impregnation at the end of winding of the hoop winding (step S160). Therefore, there are the following advantages. As shown in FIG. 3, in helical winding by the helical winding unit 100H, the winding trajectory of the resin-impregnated carbon fiber bundle W has a low fiber angle (for example, about 11 to 25 with respect to the central axis of the fiber winding object). And hoop winding by the hoop winding unit 100F intersect at a fiber angle (for example, about 89 °) almost perpendicular to the central axis. Therefore, the resin-impregnated carbon fiber bundle W that is helically wound is generally easier to slip from the surface of the liner 10 than in the case of hoop winding. However, in the FW device 100 of the present embodiment, the amount of impregnation of the thermosetting resin is increased and adjusted in the fiber bundle end region of the slippery helically wound resin-impregnated carbon fiber bundle W as described above than in the case of hoop winding. Therefore, the slip-wrapped helically wound fiber bundle end region can be easily and reliably temporarily fixed by the thermosetting resin that has been impregnated into the wound helically wound resin-impregnated carbon fiber bundle W. In addition, the thermosetting resin that has been impregnated and impregnated can be reliably fixed by the resin-impregnated carbon fiber bundle W that has been wound by helical winding. As a result, according to the FW device 100 of the present embodiment, the displacement of the helically wound fiber bundle is suppressed in the high-pressure gas tank T that is the final product obtained by helical winding and hoop winding of the resin-impregnated carbon fiber bundle W. , Tank strength can be increased.

  In the FW device 100 of the present embodiment, the low-angle helical layer 20H and the high-angle hoop layer 20F are alternately stacked on the liner 10 by repeating helical winding by the helical winding unit 100H and hoop winding by the hoop winding unit 100F. did. In addition, when helically winding by the helical winding unit 100H for forming the low-angle helical layer 20H on the inner layer side, the fiber bundle resin impregnation / distribution unit 150 again converts the thermosetting resin into the resin impregnated carbon fiber bundle W. The amount of impregnation was larger than in the case of helical winding for forming the low-angle helical layer 20H on the outer layer side. As a result, according to the FW device 100 of the present embodiment, the thermosetting resin that is largely impregnated in the low-angle helical layer 20H formed on the inner layer side penetrates the low-angle helical layer 20H formed on the outer layer side. Therefore, the thermosetting resin impregnated in the low-angle helical layer 20H on the inner layer side can be effectively used.

  The present invention is not limited to the above-described embodiment, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features of the embodiments corresponding to the technical features in each embodiment described in the summary section of the invention are intended to solve part or all of the above-described problems, or part of the above-described effects. Or, in order to achieve the whole, it is possible to replace or combine as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  In the present embodiment, the liner 10 that is the core material of the high-pressure gas tank is the fiber winding object, but the fiber may be wound around the fiber winding object other than the liner. Further, in this embodiment, the resin-impregnated carbon fiber bundle W has been wound around the fiber bobbin B in the bobbin unit 120, but the carbon fiber bundle not impregnated with the thermosetting resin may be wound. In this case, when the carbon fiber bundle not impregnated with resin is supplied from the fiber bundle resin impregnation / distribution unit 150 to the fiber bundle guide body 210, the fiber bundle resin impregnation / distribution unit 150 impregnates the thermosetting resin. The resin-impregnated carbon fiber bundle W may be used. Specifically, from the beginning of the helical winding of the resin-impregnated carbon fiber bundle, the fiber bundle pressing roller 158 is lowered so that the guided carbon fiber bundle is immersed in the stored resin solution R in the resin solution tank 151, Thus, the resin-impregnated carbon fiber bundle W is obtained. Then, as described above, the resin-impregnated carbon fiber bundles W impregnated with the resin in the resin solution tank 151 may be supplied from the fiber bundle resin-impregnated distribution unit 150 to each fiber bundle guide body 210. At this time, the above-described increase adjustment of the resin impregnation amount at the end timing of the helical winding can be performed, and the increase adjustment of the resin impregnation amount at the time of forming the inner and outer helical layers can be used together.

  In the present embodiment, in the FW device 100 having the hoop winding unit 100F and the helical winding unit 100H, the resin-impregnated carbon fiber bundle W is supplied from the krill stand 110 to the helical winding unit 100H, but the FW having only the helical winding unit 100H. Applicable to the apparatus 100.

DESCRIPTION OF SYMBOLS 10 ... Liner 10a ... Cylinder part 10b ... Dome part 14 ... Base 20 ... Fiber reinforced resin layer 20F ... High angle hoop layer 20H ... Low angle helical layer 100 ... FW apparatus 100F ... Hoop winding unit 100H ... Helical winding unit 102 ... Liner axis Support shaft 110 ... Crrill stand 120 ... Bobbin unit 150 ... Fiber bundle resin impregnation / distribution unit 151 ... Resin solution tank 152 ... Upstream side first guide roller 153 ... Upstream side second guide roller 154 ... Downstream side first guide roller 155 ... Downstream Side second guide roller 156 ... partition holding frame 157 ... partition 158 ... fiber bundle pressing roller 159 ... cylinder mechanism 160 ... control device 180 ... resin impregnation unit 181 ... guide roller group 182 ... pickup roller 183 ... roller vertical movement mechanism 184 ... maintenance Holding leg 185 ... Fiber bundle clamp 202 ... Fiber bundle guide frame 204 ... Fixed frame 210 ... Fiber bundle guide body 300 ... Base 302 ... First rail 304 ... Second rail 310 ... Support base 312 ... Base 314 ... Support arm 316 ... Chuck W ... Resin impregnated carbon fiber bundle B ... Fiber bobbin FB ... Fiber bobbin for hoop winding R ... Storage resin solution T ... High pressure gas tank AX ... Tank central axis

Claims (3)

A filament winding apparatus for winding a large number of fibers around a fiber winding object in the form of a fiber bundle,
A bobbin unit for holding the fiber bobbin from which the fiber bundle has been wound, so that the fiber bundle can be sent out;
A fiber winding part that reciprocates relatively along the axis of the fiber winding object and winds the supplied fiber bundle around the outer surface of the fiber winding object in the process of reciprocation When,
The fiber bundle wound around the fiber 維巻times object by the fiber winding portion is brought into contact with the thermosetting resin solution, by controlling the contact state between the thermosetting resin solution to said fiber bundle An impregnation adjusting unit for adjusting the amount of impregnation of the thermosetting resin solution,
Impregnation adjusting section in the fiber bundle end region in the winding end timing of the fiber bundle by fiber winding portion wound around the fiber 維巻times the object, a filament winding apparatus for increasing adjusting the amount of impregnation. The filament winding apparatus according to claim 1,
As the fiber winding part, a hoop winding part that hoops a fiber bundle around the fiber winding object, and a helical winding part that helically winds a fiber bundle around the fiber winding object,
The impregnation adjusting unit adjusts the impregnation amount in the fiber bundle end region in the helical winding unit to be larger than the impregnation amount in the fiber bundle end region in the hoop winding unit. The filament winding apparatus according to claim 2,
Helical winding by the helical winding portion and hoop winding by the hoop winding portion are repeated, and a helical layer and a hoop layer are alternately laminated on the fiber winding object,
In addition to adjusting the amount of impregnation in the fiber bundle end region, the impregnation adjusting unit is configured to form a helical layer on the outer layer side during helical winding by the helical winding unit for forming the helical layer on the inner layer side. A filament winding apparatus that adjusts the amount of impregnation more than in the case of helical winding by the helical winding portion.

Images