JP2019100445A - Method for manufacturing tank - Google Patents

Abstract

To provide a method for manufacturing a tank, with which when a terminal part of wound fiber is fixed to an outer peripheral surface of a liner, the fiber can be prevented from being peeled from a reinforcement layer formed in the liner.SOLUTION: A method for manufacturing a tank 10 comprises a winding step of winding a fiber bundle F with a thermosetting resin impregnated therein on an outer peripheral surface of a liner 11, to form a reinforcement layer 14, and a thermosetting step of thermosetting the thermosetting resin. The method is characterized in comprising a fixation step of, after the winding step, blowing hot water to a terminal part E of the fiber bundle F as an end of winding, to fix the terminal end part E to an outer peripheral part of the reinforcement layer 14.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a method of manufacturing a tank having a liner with fibers wound around the outer peripheral surface.

  As a method of manufacturing a tank of this type, a first step of fixing the end of the fiber to the outer peripheral surface of the liner at the hoop winding start position, a second step of hoop winding, and a fiber at the hoop winding end position And a third step of fixing the outer surface of the liner (see Patent Document 1). In the conventional tank manufacturing method, in the first step and the third step, the fiber is brought into contact with the outer peripheral surface of the liner and the iron is brought into contact with the contact portion between the fiber and the outer peripheral surface of the liner and heated It fixes the cut part of the fiber which completed winding.

Patent No. 5687979 gazette

  However, in the method for producing a tank described in Patent Document 1, since the iron is brought into contact with the cut portion and heated in fixing the cut portion of the fiber in the first step and the third step, There are the following problems. That is, when heat-fixing the cut portion with a trowel, the fibers may stick to the trowel. If the fibers stick to the iron, when the iron is separated from the cut part after fixation, the fibers stuck to the iron will peel from the outer peripheral surface of the liner, and the fixation of the fibers at the end position will be insufficient. There is a problem that there is a risk of

  The present invention has been made to solve such a problem, and in fixing the end portion of the wound fiber to the outer peripheral surface of the liner, the fiber is prevented from peeling from the reinforcing layer formed on the liner. It is an object of the present invention to provide a method of manufacturing a tank that can

  The method for producing a tank according to the present invention comprises a winding step of winding a fiber impregnated with a thermosetting resin on the outer peripheral surface of a liner to form a reinforcing layer, and a thermosetting step of thermosetting the thermosetting resin. The method for manufacturing a tank according to the present invention is characterized in that after the winding step, the fixing step of fixing the end portion to the outer peripheral portion of the reinforcing layer by blowing hot air to the end portion of the fiber to be wound end. Do.

  In the method of manufacturing a tank according to the present invention, the fixing step performed after the winding step includes blowing hot air against the end portion of the fiber wound around the outer peripheral surface of the liner to form the end portion of the fiber as a reinforcing layer. It is fixed to the outer periphery. With this configuration, the end of the fiber does not come into direct contact with the heating member such as the iron, and the end of the fiber is fixed to the outer periphery of the reinforcing layer. As a result, in the fixing step, the fibers are not peeled off from the outer periphery of the reinforcing layer. The surface of the liner is referred to as the outer circumferential surface, and the surface portion of the reinforcing layer including a part of the reinforcing layer is referred to as the outer circumferential portion.

  According to the present invention, it is possible to provide a method of manufacturing a tank capable of suppressing peeling of fibers from the reinforcing layer formed on the liner when fixing the end portion of the wound fiber to the outer peripheral surface of the liner. Can.

The perspective view of the tank produced by the manufacturing method of the tank concerning the embodiment of the present invention. FIG. 5 is a process chart showing a method of manufacturing a tank according to an embodiment of the present invention. It is a perspective view of a liner in which a reinforcement layer was formed by a manufacturing method of a tank concerning an embodiment of the present invention, and Drawing 3 (a) shows a reinforcement layer by which peripheral part was formed by helical winding. ) Indicates a reinforcing layer whose outer peripheral portion is formed by hoop winding. It is a figure of the fiber bundle fixing device applied to the manufacturing method of the tank which concerns on embodiment of this invention, and Fig.4 (a) shows the top view of the fiber bundle fixing device which fractured | ruptured one part, FIG.4 (b) These show the side view of the fiber bundle fixing device which fractured | ruptured a part. Explanatory drawing explaining the positional relationship of the hot air blow unit of a fiber bundle fixing device applied to the manufacturing method of the tank which concerns on embodiment of this invention, and a liner. FIG. 6 (a) is a view showing a method of manufacturing a tank for fixing a fiber bundle by a conventional manual knitting method, and FIG. 6 (b) shows a state in which a dummy yarn is inserted into a reinforcing layer; The state which pulled the dummy thread | yarn from the reinforcement layer is shown, FIG.6 (c) shows the state which embedded the terminal part of the pulled fiber bundle in the reinforcement layer, FIG.6 (d) is A of FIG.6 (c). -Shows a side view of the liner seen from the -A direction. FIG. 7 (a) shows a side view of a needle piercing device for fixing a fiber bundle by a needle stick method, and FIG. 7 (b) shows a punctured reinforcing layer. The expanded sectional view of the front-end | tip part of the needle piercing device is shown, and FIG.7 (c) shows the method of fixing a fiber bundle by the crimping | compression-bonding method by iron.

  The manufacturing method of the tank 10 which concerns on embodiment which applied the manufacturing method of the tank which concerns on this invention is demonstrated with reference to drawings.

  First, the configuration of the tank 10 will be described. The tank 10 is comprised by the liner 11, the nozzle | cap | die 12, 13 and the reinforcement layer 14 formed in the outer peripheral surface of the liner 11, as shown in FIG. The tank 10 has a property of hardly transmitting gas, so-called gas barrier property, and is configured to be filled with a relatively high pressure gas such as hydrogen inside.

  The liner 11 is formed of a cylindrical hollow container and made of engineering plastic or metal material having high mechanical strength such as polyamide resin (PA), so-called nylon (registered trademark), and the cylinder portion 15 and the dome portion 16 and 17 are included. The cylinder portion 15 is formed in a cylindrical shape, and the dome portions 16 and 17 are each formed of a hollow substantially hemispherical body and formed integrally with the cylinder portion 15. The domes 16 and 17 have a mouthpiece mounting portion (not shown), and the mouthpieces 12 and 13 are mounted on the mouthpiece mounting portion.

  The base 12 is made of a metal material, is formed substantially in a hemispherical shape, and protrudes from the dome portion 16 in the axial direction of the liner 11. The mouthpiece 13 is made of a metal material as in the case of the mouthpiece 12, formed in a substantially hemispherical shape, and protrudes from the dome portion 17 in the axial direction of the liner 11.

  The reinforcing layer 14 is formed by winding the fiber bundle F around the outer peripheral surface of the liner 11. The fiber bundle F is formed of a composite material in which fibers such as carbon fibers (Carbon Fibers), glass fibers (Glass Fibers), and aramid fibers (Aromatic Polyamide Fibers) are contained in a plastic to improve the strength.

  The fiber bundle F is a fiber bundle in which several tens to several tens of thousands of so-called multifilaments formed by twisting several tens of single fibers into one yarn are bundled. The formation of the reinforcing layer 14 is performed, for example, by a filament winding process (hereinafter referred to as FW apparatus) not shown. The fiber bundle F of the tank 10 according to the present embodiment corresponds to the fiber in the method of manufacturing a tank according to the present invention.

  This FW device stretches and narrows a thick fiber bundle F and gives sweet twist to give a roving, and so-called roving (carbon roving, roving such as glass roving, etc.) wound is impregnated with resin, or A production apparatus which applies tension to a resin-impregnated roving and continuously winds around a workpiece. The resin to be impregnated into the coarse spinning is made of, for example, a thermosetting resin such as an epoxy resin (EP), a polyester resin (PE) or a polyamide resin (PA). According to the FW method, the axial and circumferential strengths of the workpiece can be adjusted by adjusting the winding angle.

  The manufacturing method of the tank 10 which concerns on this embodiment is demonstrated. As shown in FIG. 2, the method of manufacturing the tank 10 is configured to include a preparation step, a winding step, a fixing step, a heat curing step, and the next step. Each process is performed in order. The winding step, the fixing step and the heat curing step of the present embodiment constitute the method of manufacturing a tank according to the present invention.

  In the preparation step, a plurality of bobbins around which the fiber bundle F is wound is set in the FW device, the fiber bundle F unwound from the bobbin is set in each component of the FW device, and the FW device becomes operable Preparation is performed (step S1).

  In the winding step, the FW device is operated, and the fiber bundle F is wound around the outer peripheral surface of the liner 11 by the FW device (step S2). The FW device includes a fiber bundle winding mechanism (not shown) having a support portion for supporting the caps 12, 13 of the liner 11 and a rotational drive portion for rotating the liner 11 around its axis. The fiber bundle winding mechanism is configured to wind the fiber bundle F around the outer peripheral surface of the liner 11 by cooperation of the reciprocation of the fiber bundle F in the axial direction of the liner 11 and the rotation of the liner 11.

  The fiber bundle winding mechanism controls the fiber moving speed (m / sec) of the fiber bundle in the axial direction of the liner 11 and the rotation speed (rpm) of the liner 11 by a control unit (not shown) to control the fibers of the liner 11 The winding of the bundle F can be changed to helical winding or hoop winding.

  In the helical winding, as shown in FIG. 3A, the winding locus of the fiber bundle F is a winding method in which it intersects the axis line CL of the liner 11 at a low angle θ of, for example, about 10 ° to 30 °. The bundle F is spirally and repeatedly wound around the entire cylinder portion 15 of the liner 11 and the dome portions 16 and 17.

  In the hoop winding, as shown in FIG. 3 (b), the fiber bundle F is a winding method in which the winding locus of the fiber bundle F intersects with the axis line CL of the liner 11 at an angle near 90.degree. Are repeatedly wound around the outer peripheral surface of the cylinder portion 15 of the liner 11.

  In the fixing step, hot air is blown to the end portion E at which the winding end of the fiber bundle F wound around the reinforcing layer 14 is performed by the fiber bundle fixing device 20 and the end portion E is fixed to the outer peripheral portion of the reinforcing layer 14 Fixing processing is performed (step S3).

  As shown in FIGS. 4A and 4B, the fiber bundle fixing device 20 includes a work table 21, a back side plate 22, a carry-in side plate 23, a carry-out side plate 24, and a top plate 25. The automatic shutter 26, the work transfer unit 30, the hot air blow unit 40, and the slide unit 50. A work storage room R is formed by the work table 21, the back side plate 22, the loading side plate 23, the unloading side plate 24, the top plate 25 and the automatic shutter 26. The liner 11 as a work is carried into and out of the work storage room R.

  The work table 21 includes a back side base 21a installed on the floor K, a front side base 21b, and a table 21c fixed to the back side base 21a and the front side base 21b and having a flat upper surface. The height from the floor K to the upper surface of the table 21c is formed to be approximately the same height as the height from the floor K to the knee of the worker M. The back surface, the front surface, and the top surface indicate the positional relationship of each component as viewed from the worker M.

  The back side plate 22 is positioned on the top of the back side base 21a and fixed to the top surface of the work table 21, and the loading side plate 23 is fixed to the top surface of the work table 21 on the loading side of the work storage chamber R. The side plate 24 is fixed to the upper surface of the work table 21 on the discharge side of the work storage chamber R. The top plate 25 covers the upper side of the work storage chamber R and is fixed to the back side plate 22, the loading side plate 23 and the unloading side plate 24 as shown in FIG. It is configured to be slightly higher.

  The automatic shutter 26 is provided between the table 21c of the work table 21 and the top 25 on the side facing the rear side plate 22 and is automatically opened when the worker M works, and automatically when the work is completed It is configured to be closed.

  The work transfer unit 30 includes a pallet 30 a and a pair of support blocks 30 b fixed to the pallet 30 a and supporting the base 12 and the base 13 of the liner 11. The work transfer unit 30 is configured to transfer the pallet 30a, to be carried into and out of the work storage chamber R. The pallet 30a carried into the work storage room R is configured to stand still at the central position of the work storage room R, as shown in FIG. 4 (a).

  The hot air blowing unit 40 has a hot air generating unit 40 a placed on the slide unit 50 and a nozzle 40 b for emitting the hot air from the hot air generating unit 40 a. As shown in FIG. 5, the nozzle 40b is formed with an inner diameter D1, and the angle between the liner 11 the axis JL of the nozzle 40b and the line HL passing horizontally through the center of the liner 11 is θ It is located to be. In the nozzle 40b, the distance between the outer peripheral portion of the reinforcing layer 14 of the liner 11 and the tip of the nozzle 40b is L1, and the distance from the end E of the fiber bundle F of the reinforcing layer 14 to the axis JL is L2. It is located in

  The temperature of the hot air to be discharged, the inner diameter D1 of the nozzle 40b, the angle θ, and the distances L1 and L2 are appropriately determined based on the setting parameters such as the structure and size of the hot air blow unit 40 and the liner 11 It is selected. Specifically, the temperature of the hot air varies depending on the type of epoxy resin impregnated in the fiber bundle F and the temperature in the work storage room R, but is set to about 250 ° C. to 350 ° C. Is set to about 2 minutes to 3 minutes. The angle θ formed is set to about 10 degrees so that the force of peeling off the end portion E by the wind force of the hot air does not occur by blowing the hot air obliquely to the end portion E of the fiber bundle F.

  Further, the distance L1 is set to about 20 mm so that turbulent flow is not generated in the hot air discharged from the nozzle 40b. The distance L1 is set so that the hot air is efficiently transmitted within the range of a diameter of about 30 mm on the surface of the end portion E of the reinforcing layer. The width of the end portion E of the reinforcing layer 14 is about 16 mm ± 8 mm. If the distance L1 is too small, the hot air becomes turbulent and the surface temperature of the reinforcing layer 14 may vary, and uniform fixation of the end E may not be obtained. If the distance L1 is too large, the surface of the reinforcing layer 14 is too large. The temperature may drop and the proper heat curing temperature may not be transmitted.

  In the hot air blow unit 40, the thermosetting resin such as epoxy resin impregnated in the fiber bundle F is thermally cured by the above specific configuration, and the end portion E of the reinforcing layer 14 is adhered and fixed to the outer peripheral portion of the reinforcing layer 14 It is configured to be. The adhesion (N) between the end portion E of the reinforcing layer 14 and the reinforcing layer 14 is secured at least 5 N in tensile strength.

  As shown in FIGS. 4A and 4B, the slide unit 50 is movably attached to the rail 50a fixed to the top of the front side base 21b of the table 21c and the rail 50a, and the hot air blow unit A slider 50 b for moving 40 along the liner 11 and a holder 50 c for holding the hot air blow unit 40 are provided.

  The slide unit 50 is moved by the worker M, and the nozzle 40b of the hot air blow unit 40 is configured to stand still at the optimum position for the above-mentioned thermal curing of the end portion E of the reinforcing layer 14 formed on the liner 11. There is.

  Hereinafter, the operation of the fiber bundle fixing device 20 will be briefly described.

  First, in the preparation step, a plurality of bobbins around which the fiber bundle F is wound is set in the FW device, and the fiber bundle F unwound from the bobbin is set in each component of the FW device. Next, in the fixing step, the caps 12, 13 of the liner 11 are respectively supported by the pair of support blocks 30b of the work transfer unit 30, and the liner 11 is set on the pallet 30a.

  Then, when the preparation other than the set is completed, the pallet 30a is carried into the work storage room R by the work transfer unit 30, and stands still at the central position of the work storage room R shown in FIG. Then, the automatic shutter 26 is automatically opened, and the hot air blow unit 40 can be operated from the outside of the work storage room R.

  Next, the slide unit 50 is operated by the worker M, and the hot air blow unit 40 moves in parallel to the liner 11. When the nozzle 40 b of the hot air blow unit 40 comes to a predetermined position of the end portion E of the fiber bundle F of the reinforcing layer 14 formed on the liner 11, the operator M makes the slide unit 50 stand still.

  Subsequently, the hot air blow unit 40 is activated by the worker M, and hot air set to a predetermined temperature is blown toward the end E of the fiber bundle F from the nozzle 40b. After 2 to 3 minutes from spraying, spraying is stopped. When the spraying is stopped, the end E of the fiber bundle F is fixed to the outer periphery of the reinforcing layer 14 by heat curing. Next, the pallet 30a is carried out of the work storage room R by the work conveyance unit 30, conveyed by the conveyance device (not shown) toward the next heat curing step, and the automatic shutter 26 is automatically closed.

  In the heat curing step, curing treatment of the reinforcing layer 14 is performed (step S4). Curing of the reinforcing layer 14 is performed by a heating device such as a heating furnace (not shown) or an induction heating coil for inducing high frequency induction heating, and a thermosetting resin such as epoxy resin in the reinforcing layer 14 is cured by heat treatment.

  In addition, the liner 11 in which the reinforcement layer 14 was formed may be in the stationary state in the heating apparatus, and may be in the rotated state. When the hardening process of the reinforcing layer 14 is completed, the tank 10 is completed and taken out of the pallet 30a, and the manufacturing method of the tank 10 is completed. Then, the completed tank 10 is transported by a transport device (not shown) toward the next process such as an inspection process.

The effect of the manufacturing method of the tank 10 which concerns on embodiment comprised as mentioned above is demonstrated.
In the method of manufacturing the tank 10 according to the present embodiment, the fiber bundle F in which the hot air blow unit 40 is wound around the outer peripheral surface of the liner 11 in the fixing step (step S3) performed after the winding step (step S2). The end portion E of the fiber bundle F is fixed to the outer peripheral portion of the reinforcing layer 14 by blowing hot air in a separated state to the end portion E of the fiber bundle F.

  With this configuration, the end E of the fiber bundle F can be reliably fixed to the outer peripheral portion of the reinforcing layer 14. As a result, in the fixing step, the fiber bundle F does not stick to the nozzle 40 b of the hot air blow unit 40 even when the fixing process is completed, and the outer peripheral portion of the reinforcing layer 14 in which the fiber bundle F is formed on the liner 11 The effect of eliminating the conventional problem of peeling from the metal is obtained.

  In addition, according to the manufacturing method of the tank 10 which concerns on embodiment, the effect that the problem in the manufacturing method of the tank by the conventional manual knitting system is eliminated is also acquired.

  In the conventional method of manufacturing a tank by the manual knitting method, as shown in FIG. 6A, the end portion of the fiber bundle F1 of the liner W1 is manually operated on the liner W1 held by the tank holding jig 60. It is comprised by the method of carrying out fixed processing of E1. The liner W1 has mouthpieces K1 and K2 at both ends in the axial direction, and has a reinforcing layer H1 formed by winding the fiber bundle F1 around the outer peripheral surface.

  The tank holding jig 60 has a table 61, a holder 62 for holding the mouthpiece K1, and a holder 63 for holding the mouthpiece K2, and is configured to hold the liner W1 in a stationary state.

  As shown in FIG. 6 (a) to FIG. 6 (d), the fixing process method by the manual knitting method is composed of the first step, the second step, the third step and the fourth step, The steps are performed sequentially. In the first step, as shown in FIG. 6A, the four dummy yarns DF1, DF2, DF3, DF4 have a predetermined spacing in the circumferential direction of the end portion E1 of the fiber bundle F1 forming the reinforcing layer H1. Is manually inserted by the worker.

  In the second step, as shown in FIG. 6B, the end E1 of one fiber bundle F1 is manually broken into four by the operator, and the fiber bundle F1 is broken into four. , And dummy yarns DF1, DF2, DF3, and DF4 respectively. In the third step, one end of each of the dummy yarns DF1, DF2, DF3, and DF4 through which the fiber bundle F1 is passed is pulled by the operator in the direction of the mouthpiece K2 indicated by the arrow.

  Thereby, the fiber bundle F1 and the dummy yarns DF1, DF2, DF3, DF4 are knitted in the reinforcing layer H1. In the fourth step, the woven fiber bundle F1 and the dummy yarns DF1, DF2, DF3, DF4 are manually reinforced by the operator as shown in FIGS. 6 (c) and 6 (d). The terminal end E1 is embedded in the reinforcing layer H1 so as not to protrude from the outer peripheral part of By this configuration, the end E1 is fixed to the reinforcing layer H1.

  However, in the fixing method by the manual knitting method, care work is required with attention to adhesion of the thermosetting resin such as epoxy resin impregnated in the fiber bundle F1 to the hand of the operator. If the thermosetting resin adheres to the skin of the worker, it may affect the skin, so that the worker performs the knitting work with due care so that the thermosetting resin does not adhere to the skin. Therefore, in addition to the work of knitting the fiber bundle F1 into the single reinforcing layer H1, the care work for preventing the adhesion of the thermosetting resin to the skin is overlapped, and there is a problem that the number of working man-hours is increased.

  According to the manufacturing method of the tank 10 according to the present embodiment, the operation is carried out as a semi-automatic simple operation of moving the hot air blow unit 40 by the operator, and the end E1 of the fiber bundle F1 is reinforced by the non-contact hot air. Since the fixing process is performed on the outer peripheral portion of the above-described structure, the problem of an increase in the number of care work and work man-hours in the fixing process method by the manual knitting method can be solved.

  In addition, according to the method of manufacturing the tank 10 according to the present embodiment, an effect that the problem in the method of manufacturing the tank by the entanglement method by the conventional needle stick is eliminated is also obtained.

  In the conventional method of manufacturing a tank by the entanglement method by needle stick, the end portion E2 of the fiber bundle GF formed on the reinforcing layer H2 of the liner W2 set in the needle stick device 70 shown in FIG. 7A is fixed. It is structured in a way. The reinforcing layer H2 of the liner W2 includes a CF layer in which a fiber bundle CF of carbon fibers (Carbon Fiber) is wound around the outer peripheral surface of the liner W2 and a GF layer of a fiber bundle consisting of glass fibers (Glass Fiber). have.

  The needle piercing device 70 includes a table 71 installed on the floor K, a moving unit 72 provided on the table 71 for holding the liner W2 and moving the liner W2 in the axial direction, and a needle piercing unit 73 for piercing the reinforcing layer H2 with a needle. , And a needle pricking handle 74 for adjusting the needle pricking depth.

  The needle piercing unit 73 has a pair of scissors each having 34 needles disposed in a square cage, and rotates each pair of scissors at the same time, and simultaneously 68 sticks into the GF layer of the reinforcing layer H2 The bundles GF are configured to be intertwined with each other. As shown in FIG. 7 (b), each needle has a stepped portion having a diameter (D3) of about 0.5 mm and a tip end portion formed in a concavo-convex shape in the circumferential direction. In the attached portion, the fiber bundle GF of the GF layer is configured to be entangled.

  In the fixing processing method by the needle sticking method, first, the operator sets the liner W2 to the moving unit 72, and then the end E2 of the fiber bundle GF formed in the reinforcing layer H2 and the needle of the needle sticking unit 73 The liner W2 is moved so as to coincide with the position of. Then, the needle stick handle 74 is operated by the operator, and the depth to the tip of the needle in the GF layer is 2.1 mm ± 0 so that the tip of the needle does not reach the CF layer as shown in FIG. Adjusted to be in the range of 2 mm.

  When the tip of the needle is pierced by the end portion E2 of the GF layer, the tip of the total of 68 needles is rotated in the GF layer by rotation of the pair of scissors of the needle piercing unit 73, and the fiber bundle in the GF layer GFs are intertwined. When the fiber bundles GF are entangled, the needle pricking handle 74 is operated by the operator and the tip of the needle is separated from the GF layer. With this configuration, the end portion E2 of the fiber bundle GF formed in the reinforcing layer H2 is fixed to the fiber bundle GF in the GF layer.

  However, in the fixing processing method by the needle stick method, the needle stick is performed on the GF layer so as not to damage the CF layer which maintains the mechanical strength of the tank constituted by the liner W2. Therefore, in order to prevent the tip of the needle from reaching the CF layer, the needle pricking depth in the GF layer needs to be dimensioned with high accuracy. In addition, since the tip portion of the needle is relatively thin, it has a structure in which bending or breakage of the tip of the needle is likely to occur. Therefore, it is necessary to confirm bending or breakage of the needle tip. As a result, there is a problem that the number of working man-hours is increased since dimensional control with high accuracy of the needle penetration depth and confirmation of the shape and breakage of the needle tip are required.

  According to the manufacturing method of the tank 10 according to the present embodiment, the operation is carried out as a semi-automatic simple operation of moving the hot air blow unit 40 by the operator, and the end E1 of the fiber bundle F1 is reinforced by the non-contact hot air. Since the fixing process is performed on the outer periphery of the needle, the problem of dimensional control with high precision of the needle piercing depth and confirmation of the shape of the needle tip and breakage in the fixing treatment method by the needle sticking method is eliminated. The effect is obtained.

  According to the method of manufacturing the tank 10 according to the present embodiment, an effect that the problem in the method of manufacturing the pressure-type tank with the conventional iron is eliminated can be obtained.

  A conventional method of manufacturing a tank by a press-fit method using a trowel is constructed by a method of fixing the end of a fiber bundle of a reinforcing layer made of a GF layer formed on a liner (not shown) by a trowel 80 shown in FIG. It is done. The iron 80 is formed so that the portion in contact with the liner protrudes with a width L3, and the protruding portion is configured to be heated.

  In the fixation processing method by the crimping method with iron, iron 80 is heated at a temperature appropriately selected in the range of 200 ° C. to 300 ° C., and the heated iron 80 moves in the direction of the arrow shown in FIG. It is pressed against the end of the fiber bundle formed in the reinforcing layer. The heat of the iron 80 thermally cures the thermosetting resin impregnated in the end of the fiber bundle and the reinforcing layer, and the end of the fiber bundle is crimped and fixed to the reinforcing layer.

  However, after the end of the fiber bundle is crimped and fixed to the reinforcing layer made of GF layer by heat and then the fiber bundle of the reinforcing layer is ironed when the iron 80 is separated from the reinforcing layer. There is a problem that the fiber bundle of the reinforcing layer may be peeled off by sticking to 80 and the iron 80.

  According to the manufacturing method of the tank 10 according to the present embodiment, the operation is carried out as a semi-automatic simple operation of moving the hot air blow unit 40 by the operator, and the end E1 of the fiber bundle F1 is reinforced by the non-contact hot air. Since the fixing process is performed on the outer peripheral portion, the effect that the problem of the fiber bundle of the reinforcing layer being peeled off by the iron 80 in the iron fixing method by the pressure bonding method with iron is eliminated.

  As mentioned above, although the embodiment of the present invention was explained in full detail, the present invention is not limited to the above-mentioned embodiment, and various designs are possible in the range which does not deviate from the spirit of the present invention described in the claim. It is possible to make changes.

DESCRIPTION OF SYMBOLS 10 ... Tank 11, 11 ... liner, 12, 13 ... nozzle | cap | die, 14 ... reinforcement layer, 15 ... cylinder part, 16, 17 ... dome part, 20 ... fiber bundle fixation Apparatus 21 21 work table 21 a rear side base 21 b front side base 21 c table 22 rear side plate 23 side plate 24 side · Outboard side plate 25 · · · top plate, 26 · · · Automatic shutter, 30 · · · Work conveyance unit, 30a · · · Pallet, 30b · · · Support block, 40 · · · Hot air blow unit, 40a · · · · · Hot air generating portion, 40b · · · Nozzle, 50 · · · Slide unit, 50a · · · Rail, 50b · · · Slider, 50c · · · Holder · · · · · · · · · · · · · · · · · · · · · · · (Fiber), R ... Work storage room

Claims (1)

A manufacturing method of a tank comprising a winding step of winding a fiber impregnated with a thermosetting resin around an outer peripheral surface of a liner to form a reinforcing layer, and a thermosetting step of thermosetting the thermosetting resin,
A method of manufacturing a tank, comprising a fixing step of blowing hot air to the end of the fiber which is the end of winding to fix the end to the outer peripheral portion of the reinforcing layer after the winding step.

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