JP2011240669A - Apparatus for manufacturing of liner for high pressure tank, method of manufacturing liner for the high pressure tank, and the high pressure tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing of a liner for a high pressure tank joined to eliminate a gap between both welding ends of two divided bodies.SOLUTION: The apparatus for manufacturing the liner for the high pressure tank has: a pressing tool 40 for holding a laser welding part 30 formed by oppositely bringing both welding ends of first and second divided bodies 10, 20 into contact with each other directly from the outer peripheral side; a laser source 50 for irradiating the inside of the first divided body 10 with a laser beam 52; a rotary shaft 62 with a reflection mirror to the one end of which the reflection mirror 60 for reflecting the emitted laser beam 52 to the inner peripheral side of the laser welding part 30 is provided; a rotating device 64 for rotating the rotary shaft 62 with the reflection mirror; a holder 70 for holding the second divided body 20; and a vibration oscillator 72 applying vibration to the second divided body 20 provided to the holder 70.

Description

  The present invention relates to a high-pressure tank liner manufacturing apparatus, a high-pressure tank liner manufacturing method, and a high-pressure tank.

  As shown in FIG. 10, the high-pressure vessel such as the high-pressure tank 300 uses an FRP (Fiber Reinforced Plastic) member that is lighter and more tough than iron or the like, and is formed of an FRP member on the surface of the hollow liner 310. An FRP layer 320 is formed. Here, the FRP member includes, for example, a fiber and a resin and is reinforced with plastic.

  As shown in FIG. 11, as a method for forming the FRP layer 320, for example, a filament winding method (hereinafter also referred to as “FW method”) is known. This filament winding method uses a resin-impregnated fiber as a hollow. The FRP layer 320 is formed by being wound around the liner 310. After forming the FRP layer 320, a thermosetting process is usually performed.

  The hollow liner can be formed, for example, by joining two or more divided bodies. Patent Document 1 describes that two or more divided bodies made of a resin composition are joined to form a hollow liner, and the resin composition includes polyamide 6, copolymer polyamide, and a polyamide including an impact resistant material. The use of a resin composition is described.

  On the other hand, Patent Document 2 describes a method in which laser welding is performed by facing the welding end portions of two resin molded bodies made of a resin having absorptivity to laser light. At the time of welding, the laser beam is irradiated from the outer peripheral side of the liner.

  By the way, conventionally, as a general method for forming the hollow liner 200 by welding the two divided bodies 110 and 120 made of the resin composition, for example, as shown in FIG. With the welding end portions facing each other and the laser welding portion 30 composed of the two welding end portions opposed to each other being exposed, one of the divided bodies 110 and 120 is pressed by the pressing jig 40 to hold the base portions 14 and 24. While the divided bodies 110 and 120 are simultaneously rotated by a rotating shaft (not shown) penetrating, the laser weld 52 is irradiated from the outside of the divided bodies 110 and 120 to the laser welded portion 30 and two divided bodies. The hollow liner 200 is formed by welding the welding end portions 110 and 120.

  The above method will be described in more detail. The two divided bodies include a divided body 110 made of a laser transmitting material and a divided body 120 made of a laser absorbing material. As shown in FIG. The welding end portions of 120 have stepped cutout shapes that can be fitted to each other, and the laser welded portion 30 is formed by fitting the stepped cutout portions together. Then, when the laser beam 52 is irradiated to the divided body 110 made of a laser transmitting material in the laser welded portion 30, the laser light 52 that has passed through the divided body 110 reaches the divided body 120 made of a laser absorbing material, and the laser light 52 The weld end of the divided body 120 that has absorbed the heat is heated and melted, and the heat generated by the divided body 120 is transmitted to the weld end of the divided body 110, so that the weld end of the divided body 110 is also melted. When the welded end portions of 120 are melted and mixed, the divided bodies 110 and 120 are joined.

JP 2004-130606 A JP 2009-191871 A

  In the method of forming the hollow liner by welding the two divided bodies made of the conventional resin composition described above, when the two divided bodies are brought into contact with each other, it is temporarily between the weld ends of the two divided bodies. If a gap occurs in at least one place, even if the laser beam is irradiated and the divided body made of the laser absorbing material generates heat, the heat is not transmitted to the divided body made of the laser transmitting material due to the gap, and the gap There is a possibility that the welding accuracy at both welding ends of the portion where the erosion occurs is lowered. In addition, since the laser beam is irradiated from the outside of the contact point between the two divided bodies, the holding jig that holds the two divided bodies cannot directly hold the laser welded part, so compared to the case where it is pressed directly. It is difficult to suppress the generation of gaps, and the laser irradiation surface is exposed to the outside air and is easy to cool. Therefore, the heat-melting point at the weld end is relatively narrow and the heat-melting time is also relatively short. Since only the two welded end portions generate heat and are melt-bonded, even if a gap is generated between the other welded end portions, there is a possibility that the joining by welding proceeds in that state.

  The present invention has been made in view of the above-described problem, and a high-pressure tank liner manufacturing apparatus, a high-pressure tank liner manufacturing method, and a high-pressure tank liner manufacturing method for joining so as to eliminate a gap between both welded end portions of at least two divided bodies. Provide high-pressure tank.

  In order to achieve the above object, a high pressure tank liner manufacturing apparatus, a high pressure tank liner manufacturing method, and a high pressure tank according to the present invention have the following characteristics.

  (1) The welding end portion of the first divided body made of a resin that is transmissive to laser light and the welding end portion of the second divided body made of a resin that is absorbent to the laser light are opposed to each other. A holding jig for holding the circular portion formed from the outer peripheral side, a laser source for irradiating laser light into the first divided body through a base provided in the first divided body, and a second A rotating shaft with a reflecting mirror provided at one end with a reflecting mirror that is inserted into the second divided body through a base provided in the divided body and reflects the irradiated laser light to the inner peripheral side of the rotating portion. And a high pressure tank liner manufacturing apparatus having a rotating means for rotating a rotating shaft with a reflecting mirror.

  Since the circumference part formed by making the welding end part of the 1st division object and the welding end part of the 2nd division object counter-contact is held with a pressing jig from the outer circumference side, compared with the past, between both welding edge parts Generation of gaps is suppressed. Further, while rotating the rotating body with the reflector inserted into the second divided body, the laser light irradiated into the first divided body by the reflecting mirror is reflected to the inner peripheral side of the circulating portion, and both welding end portions The generated heat is trapped inside the first divided body and the second divided body, and the melting time of both welded end portions becomes longer than before. Thereby, even if a clearance gap arises between both welding edge parts at the time of opposing contact, it can weld-join, fully filling a clearance gap.

  (2) In the high-pressure tank liner manufacturing apparatus according to (1), the base part of the first divided body and the base part of the second divided body are connected while the second divided body is gripped. An apparatus for manufacturing a liner for a high-pressure tank having a vibration oscillator that applies vibration to an axial direction.

  While rotating the rotating body with the reflecting mirror inserted in the second divided body, the laser beam irradiated into the first divided body by the reflecting mirror is reflected to the inner peripheral side of the rotating portion, and both welding end portions are When joining by melting and heating, according to the amount of penetration at the time of melting of the welding end of the first divided body and the welding end of the second divided body, Since vibration is applied from the vibration oscillator to the axial direction connecting the base portions of the second divided body, it is possible to join without any gap between both welded end portions.

  (3) In the high pressure tank liner manufacturing apparatus according to (1) or (2), the high pressure tank liner manufacturing apparatus is further provided with reflecting mirror angle adjusting means for adjusting the angle of the reflecting mirror. is there.

  The width of the laser beam reflected by the reflecting mirror using the reflecting mirror angle adjusting means is set according to the width of the facing contact portion between the welding end of the first divided body and the welding end of the second divided end. Since it can adjust, the quantity required for welding of both welding end parts can be sufficiently melted, and both welding end parts can be more reliably welded.

  (4) The welding end portion of the first divided body made of a resin that is transparent to laser light and the welding end portion of the second divided body made of a resin that is absorbent to the laser light are opposed to each other. While rotating the rotating shaft with a reflecting mirror provided with a reflecting mirror at one end inserted through the base provided in the second divided body, while holding the rotating portion from the outer peripheral side, A step of irradiating the reflecting mirror with laser light through a base provided in the first divided body, reflecting the irradiated laser light to the inner peripheral side of the circulating portion, and welding and bonding both welding end portions. And a method for producing a liner for a high-pressure tank.

  In order to hold the circumference part formed by making the welding end part of the 1st division object and the welding end part of the 2nd division object counter-contact from the outer peripheral side, compared with the past, generation of the gap between both welding edge parts is produced. It is suppressed. Further, while rotating the rotating body with the reflector inserted into the second divided body, the laser light irradiated into the first divided body by the reflecting mirror is reflected to the inner peripheral side of the circulating portion, and both welding end portions The generated heat is trapped inside the first divided body and the second divided body, and the melting time of both welded end portions becomes longer than before. Thereby, even if a clearance gap arises between both welding edge parts at the time of opposing contact, it can weld-join, fully filling a clearance gap.

  (5) The welding end portion of the first divided body made of a resin that is transparent to laser light and the welding end portion of the second divided body made of a resin that is absorbent to the laser light are opposed to each other. While rotating the rotating shaft with the reflecting mirror provided with the reflecting mirror at one end inserted through the base provided on the second divided body, The reflecting mirror is irradiated with laser light through a base provided in one divided body, the irradiated laser light is reflected to the inner peripheral side of the rotating portion, and the second divided body is held. A method for producing a liner for a high-pressure tank, including the step of applying vibration to the axial direction connecting the base portion of the first divided body and the base portion of the second divided body, and welding and joining the two welding end portions. is there.

  In order to hold the circumference part formed by making the welding end part of the 1st division object and the welding end part of the 2nd division object counter-contact from the outer peripheral side, compared with the past, generation of the gap between both welding edge parts is produced. It is suppressed. Further, while rotating the rotating body with the reflecting mirror inserted into the second divided body, the laser light irradiated into the first divided body by the reflecting mirror is reflected to the inner peripheral side of the circulating portion, and both welding end portions The generated heat is trapped inside the first divided body and the second divided body, the melting time of both weld ends becomes longer than before, and both the weld ends are heated to melt. When the joining is performed, the base portion of the first divided body and the second portion are in accordance with the amount of fusion at the time of melting of the welding end portion of the first divided body and the welding end portion of the second divided body. Since vibration is applied from the vibration oscillator with respect to the axial direction connecting the base portions of the divided bodies, it is possible to join without any gap between the two welding end portions.

  (6) The apparatus for producing a high-pressure tank liner according to any one of (1) to (3) above or two divided bodies by the method for producing a high-pressure tank liner according to (4) or (5) above Is a high-pressure tank having a liner formed by bonding and a fiber-reinforced resin layer formed by winding and curing a fiber impregnated with a thermosetting resin.

  According to this invention, it joins so that the clearance gap between the both welding edge parts of at least 2 division body may be eliminated.

It is sectional drawing of an example of the 1st division body which consists of resin which has the permeability | transmittance with respect to the laser beam for liner formation in embodiment of this invention. It is sectional drawing of an example of the 2nd division body which consists of resin which has absorptivity with respect to the laser beam for liner formation in embodiment of this invention. It is sectional drawing which shows an example of the structure of the opposing contact part of the welding edge part of the 1st division body and the welding edge part of the 2nd division body in embodiment of this invention. It is a schematic block diagram explaining an example of a structure of the manufacturing apparatus of the liner for high pressure tanks in embodiment of this invention. It is a schematic block diagram which shows an example of a structure of the reflecting mirror angle adjustment means which adjusts the angle of the reflecting mirror in embodiment of this invention. It is a figure explaining the width | variety of the laser beam reflected when it is set as reflection angle (theta) ₁ using the reflective mirror angle adjustment means in embodiment of this invention. It is a figure explaining the width | variety of the laser beam reflected when it is set as reflection angle (theta) ₂ using the reflective mirror angle adjustment means in embodiment of this invention. It is a flowchart explaining an example of the manufacturing method of the liner for high pressure tanks in embodiment of this invention. It is a flowchart explaining the other example of the manufacturing method of the liner for high pressure tanks in embodiment of this invention. It is the schematic explaining an example of the manufacturing method of the conventional high pressure tank liner. It is a figure explaining the welding mechanism at the time of irradiating the laser beam to the part which fitted both the welding end parts of the division body which consists of the conventional laser transmission material, and the division body which consists of a laser absorption material. It is a partially broken sectional view explaining an example of the structure of a high pressure tank. It is an expanded sectional view of X section enclosed with the dashed-dotted line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the high-pressure tank liner manufacturing apparatus and the high-pressure tank liner manufacturing method of the present embodiment, as shown in FIGS. 1A and 1B, the first divided body 10 made of a resin that is transparent to laser light. And the second divided body 20 made of a resin that absorbs laser light, and as shown in FIG. 2, the welded end portion 12 of the first divided body 10 and the second divided body 20 A liner for a high-pressure tank is manufactured by bringing the welding end portion 22 into contact with each other and further welding and joining. Here, the welding end 12 shown in FIG. 2 is provided with a notch that can be fitted to the protrusion of the welding end 22, and the two welding ends 12 and 22 are welded in a fitted state. Are joined.

  The first divided body 10 made of a resin that is transparent to laser light may be any resin as long as it is a resin that transmits laser. For example, a polyamide-based resin composition is used, and a polyamide-based resin composition is used. Examples of the product include n-nylon synthesized by polycondensation reaction of ω amino acids, and n, m-nylon synthesized by co-condensation polymerization reaction of diamine and carboxylic acid. , Nylon 11 and Nylon 12. Examples of n, m-nylon include Nylon 66, Nylon 610, Nylon 6T, Nylon 6I, Nylon 9T and Nylon M5T. Trademark, poly-p-phenyleneterephthalamide), Nomex (DuPont registered trademark, poly-m-phenyleneisoephthalamide), etc. Is used.

  The second divided body 20 made of a resin that absorbs laser light may be any resin as long as it is a resin that absorbs laser light or contains a material that absorbs laser. -Based resin composition, polyethylene (PE), polypropylene (PP), styrene-acrylonitrile copolymer, polyethylene terephthalate (PET), polystyrene, ABS, acrylic (PMMA), polycarbonate (PC), polybutylene terephthalate (PBT), polyphenylene Examples thereof include a resin such as sulfide (PPS) mixed with a predetermined colorant such as carbon black, a dye or a pigment.

  Further, in the present embodiment, the transmittance between the resin having transparency to the laser beam used for the first divided body 10 and the resin having absorption property to the laser light used for the second divided body 20 ( %) Is preferably 30% to 70%. Here, the transmittance is the transmittance when a semiconductor laser (wavelength of laser light: 500 to 1000 nm) is irradiated.

  Further, the entire second divided body 20 may be molded from the above-described resin having absorptivity with respect to the laser beam. For example, only the weld end of the second divided body 20 with respect to the laser beam is formed. It is also possible to mold using a resin having absorbency.

  As shown in FIG. 3, the high-pressure tank liner manufacturing apparatus in the present embodiment is a circuit in which the welding end portion of the first divided body 10 and the welding end portion of the second divided body 20 are opposed to each other. The laser beam 52 is radiated to the inside of the first divided body 10 through a holding jig 40 that directly holds the laser welded portion 30 that is a portion from the outer peripheral side and a base portion provided in the first divided body 10. A reflection that is inserted into the second divided body 20 via the laser source 50 and a cap provided on the second divided body 20 and reflects the irradiated laser light 52 to the inner peripheral side of the laser welded portion 30. The mirror 60 has a rotating shaft 62 with a reflecting mirror provided at one end and rotating means 64 for rotating the rotating shaft 62 with a reflecting mirror.

  Since the laser welding part 30 is directly held by the pressing jig from the outer peripheral side, generation of a gap between the two welding end parts is suppressed as compared with the conventional technique. Further, while rotating the rotating shaft 62 with the reflecting mirror inserted into the second divided body 20, the laser beam 52 irradiated into the first divided body 10 by the reflecting mirror 60 is irradiated with the inner circumference of the laser welded portion 30. Since both welding end portions are reflected by reflecting on the side, the generated heat is trapped inside the first divided body 10 and the second divided body 20, and the melting time of both welding end portions becomes longer than before, Even if a gap is generated between the two welding end portions at the time of facing contact, welding can be performed while sufficiently filling the gap.

  Further, by rotating the rotating shaft 62 with the reflecting mirror at a high speed, it is possible to uniformly irradiate the entire circumference of both welding ends within a predetermined time, so that the entire circumference of both weld ends can be irradiated. Welding can be performed while generating heat almost uniformly. Thereby, the welding by a laser beam can be ensured at high speed and stable welding quality. Here, the rotation speed of the rotating shaft 62 with a reflecting mirror in the present embodiment is, for example, a speed of one rotation in 2-3 seconds, preferably 6-7 rotations, welded and joined, but is not limited thereto. Instead, the rotation speed and the number of rotations are appropriately selected according to the intensity of the laser light and the transmittance of the resin that absorbs the laser light in the second divided body 20.

The type of the laser beam 52 emitted from the laser source 50 in the present embodiment is based on the absorption spectrum, plate thickness (transmission length), etc. of the transmissive resin material that transmits the laser beam. Those having a wavelength such that the transmittance is a predetermined value or more are appropriately selected. For example, laser light such as glass: neodymium 3+ laser, YAG: neodymium 3+ laser, ruby laser, helium-neon laser, krypton laser, argon laser, H ₂ laser, N ₂ laser, and semiconductor laser can be used. More preferable examples of the laser include YAG: neodymium 3+ laser (laser light wavelength: 1060 nm) and semiconductor laser (laser light wavelength: 500 to 1000 nm).

  As shown in FIG. 3, the high-pressure tank liner manufacturing apparatus in the present embodiment further includes a gripping tool 70 that grips the second divided body 20, and the first split body 10 provided in the gripping tool 70. A vibration oscillator 72 that applies vibration to the axial direction connecting the base part 14 and the base part 24 of the second divided body 20 is provided.

  Accordingly, the laser beam 52 irradiated into the first divided body 10 by the reflecting mirror 60 is rotated around the inner circumference of the laser welded portion 30 while rotating the rotating shaft 62 with the reflecting mirror inserted into the second divided body 20. When the two welding ends are heated and melted and joined, the welding end portions of the first divided body 10 and the welding end portions of the second divided body 20 are respectively melted at the time of melting. Accordingly, by applying vibration from the vibration oscillator 72 in the axial direction connecting the base part 14 of the first divided body 10 and the base part 24 of the second divided body 20, temporarily between the two welded parts. Even when a gap is generated, the gap is eliminated while welding, and joining without gap is always performed. In this way, the productivity of the liner is drastically improved by rotating the rotating shaft 62 with a reflecting mirror at high speed, irradiating and welding the laser beam from the inside of the divided body, and applying vibration to the divided body.

  Here, the gripping tool 70 described above is, for example, a gripping tool that grips the base portion 24 of the second divided body 20, or a gripping tool that grips the outer peripheral portion of the second divided body 20. It may be. For example, an ultrasonic vibration oscillator can be used as the vibration oscillator 72.

  Further, as shown in FIG. 4, the high-pressure tank liner manufacturing apparatus in the present embodiment is further provided with reflecting mirror angle adjusting means for adjusting the angle of the reflecting mirror 60. As shown in FIG. 4, the reflecting mirror angle adjusting means is a shaft 66 that can be driven forward and backward adjacent to the rotating shaft 62 with a reflecting mirror, and a pivotable hinge is provided at the tip of the shaft. The reflector 60 is connected via a hinge.

Thereby, for example, it corresponds to the width (for example, “laser irradiation range” shown in FIG. 2) of the facing contact portion (for example, the fitting portion) between the welding end portion of the first divided body and the welding end portion of the second divided end portion. 4), the axis 66 shown in FIG. 4 is advanced, and the reflecting mirror 60 is adjusted to the angle θ ₁ as shown in FIG. 5A, thereby adjusting the width of the reflected laser beam to be narrow. A laser welding part can be welded efficiently. On the other hand, when the width of the opposing contact portion is wide, the axis 66 shown in FIG. 4 is retracted, and the reflecting mirror 60 is adjusted to the angle θ ₂ as shown in FIG. Can be adjusted widely to weld the entire laser welding end sufficiently.

  Next, as shown in FIG. 6, an example of a method for manufacturing a high-pressure tank liner in the present embodiment includes a welded end portion of a first divided body made of a resin that is transparent to laser light, and laser light. A step (S100) of directly holding from the outer peripheral side the circumferential portion formed by bringing the welded end portion of the second divided body made of a resin having absorptivity into contact with each other, and the second divided body is provided. The step of inserting a rotating shaft with a reflecting mirror provided with a reflecting mirror at one end through the base portion (S102), and the rotating base rotating shaft with the reflecting mirror while rotating the rotating base with the reflecting portion. And irradiating the reflecting mirror with laser light, reflecting the irradiated laser light to the inner peripheral side of the circulating portion, and welding and joining both welding end portions (S104).

  In order to hold the circumference part formed by making the welding end part of the 1st division object and the welding end part of the 2nd division object counter-contact from the outer peripheral side, compared with the past, generation of the gap between both welding edge parts is produced. It is suppressed. In addition, since the laser beam is reflected on the inner peripheral side of the circulating portion and both welding end portions are heated, the generated heat is trapped inside the first divided body and the second divided body, and the fusion end portions are melted. The time is longer than in the conventional case, and even if a gap is generated between the two welding end portions at the time of facing contact, the welding can be performed while sufficiently filling the gap.

  Another example of the manufacturing method of the high-pressure tank liner in the present embodiment is as shown in FIG. 7 in the welding end portion of the first divided body made of a resin having transparency to the laser beam and the laser beam. In contrast, a step (S100) of holding a circumferential portion in which the welded end portion of the second divided body made of a resin having an absorptivity is opposed to each other from the outer circumferential side, and a base portion provided in the second divided body are provided. Step (S102) of inserting a rotating shaft with a reflecting mirror provided with a reflecting mirror at one end thereof, and reflecting through a base portion provided in the first divided body while rotating the rotating shaft with a reflecting mirror. The mirror is irradiated with laser light, the irradiated laser light is reflected to the inner peripheral side of the rotating part, and the base part of the first divided body and the second divided part are held while holding the second divided body Vibration is applied to the axial direction connecting the base parts of the body, and both welding ends are welded. Having a step (S108) to be joined.

  In the manufacturing method of the liner for a high-pressure tank shown in FIG. 7, when both the welding end portions are heated and melted and joined, the welding end portions of the first divided body and the welding end portions of the second divided body are connected. Since vibration is applied from the vibration oscillator to the axial direction connecting the base part of the first divided body and the base part of the second divided body according to the amount of penetration at the time of melting, both welding end parts It is possible to join without a gap between them.

  The high-pressure tank according to the present embodiment includes a liner formed by joining two divided bodies by a high-pressure tank liner manufacturing apparatus shown in FIG. 3 or a high-pressure tank liner manufacturing method shown in FIGS. A fiber reinforced resin layer formed by winding and curing a fiber impregnated with a curable resin.

  As described above, since a liner having stable welding quality can be produced at high speed as compared with the conventional case, the productivity of the high-pressure tank with stable quality is improved as compared with the conventional case.

  The present invention is effective for any application as long as it uses a high-pressure tank, but can be used particularly for a high-pressure tank for supplying fuel gas to a fuel cell for vehicles.

  DESCRIPTION OF SYMBOLS 10 1st division body, 12,22 welding edge part, 14,24 mouthpiece part, 20 2nd division body, 30 laser welding part, 40 holding jig, 50 laser source, 52 laser beam, 60 reflector, 62 Rotating shaft with reflector, 64 rotating means, 66 shafts, 70 gripping tool, 72 vibration oscillator, 300 high pressure tank.

Claims (6)

The welding end portion of the first divided body made of a resin that is transmissive to laser light and the welding end portion of the second divided body made of a resin that is absorbent to the laser light are made to face each other. A holding jig for holding the rotating portion from the outer peripheral side;
A laser source for irradiating the inside of the first divided body with a laser beam through a base provided in the first divided body;
A reflecting mirror provided at one end with a reflecting mirror that is inserted into the second divided body through a base provided in the second divided body and reflects the irradiated laser light to the inner peripheral side of the rotating portion. A rotating shaft with
A rotating means for rotating a rotating shaft with a reflecting mirror;
An apparatus for producing a liner for a high-pressure tank, comprising: In the manufacturing apparatus of the liner for high pressure tanks of Claim 1,
And a vibration oscillator for applying vibration to an axial direction connecting the base portion of the first divided body and the base portion of the second divided body while holding the second divided body. Tank liner manufacturing equipment. In the manufacturing apparatus of the liner for high pressure tanks of Claim 1 or Claim 2,
The apparatus for manufacturing a liner for a high-pressure tank is further provided with reflecting mirror angle adjusting means for adjusting the angle of the reflecting mirror. The welding end portion of the first divided body made of a resin that is transmissive to laser light and the welding end portion of the second divided body made of a resin that is absorbent to the laser light are made to face each other. A step of holding the rotating portion from the outer peripheral side;
While rotating the rotating shaft with the reflecting mirror provided with the reflecting mirror at one end inserted through the base portion provided in the second divided body, through the base portion provided in the first divided body. Irradiating the reflecting mirror with laser light, reflecting the irradiated laser light to the inner peripheral side of the circulating portion, and welding and bonding both welding ends;
The manufacturing method of the liner for high pressure tanks characterized by having. Circulation in which the welding end portion of the first divided body made of a resin that is transparent to laser light and the welding end portion of the second divided body that is made of a resin that is absorbent to the laser light are opposed to each other. Holding the portion from the outer peripheral side;
While rotating the rotating shaft with the reflecting mirror provided with the reflecting mirror at one end inserted through the base portion provided in the second divided body, through the base portion provided in the first divided body. The reflecting mirror is irradiated with laser light, the irradiated laser light is reflected to the inner peripheral side of the rotating part, and the base part of the first divided body and the second part are held while holding the second divided body. A step of applying vibration to the axial direction connecting the base portions of the divided bodies, and welding and bonding both welding end portions;
The manufacturing method of the liner for high pressure tanks characterized by having. A high pressure tank liner manufacturing apparatus according to any one of claims 1 to 3 or a high pressure tank liner manufacturing method according to claim 4 or 5, wherein two divided bodies are joined. Liner,
A fiber reinforced resin layer formed by winding and curing a fiber impregnated with a thermosetting resin in a liner;
A high-pressure tank characterized by comprising:

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