WO2021186734A1 - 管体中間体及び管体製造方法 - Google Patents
管体中間体及び管体製造方法 Download PDFInfo
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- WO2021186734A1 WO2021186734A1 PCT/JP2020/012536 JP2020012536W WO2021186734A1 WO 2021186734 A1 WO2021186734 A1 WO 2021186734A1 JP 2020012536 W JP2020012536 W JP 2020012536W WO 2021186734 A1 WO2021186734 A1 WO 2021186734A1
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- mandrel
- carbon fiber
- fixing member
- outer peripheral
- peripheral surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/446—Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/566—Winding and joining, e.g. winding spirally for making tubular articles followed by compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/258—Tubular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2307/00—Use of elements other than metals as reinforcement
- B29K2307/04—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2022/00—Hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/123—Rigid pipes of plastics with or without reinforcement with four layers
Definitions
- the present invention relates to, for example, an intermediate of a pipe body used as a power transmission shaft of a vehicle, and a method of manufacturing the pipe body.
- the power transmission shaft (propeller shaft) mounted on the vehicle is provided with a pipe body extending in the front-rear direction of the vehicle, and the power generated by the prime mover and decelerated by the transmission is transmitted to the final deceleration device by this pipe body.
- a tube body used for such a power transmission shaft there is a tube made of fiber reinforced plastic manufactured by using a mandrel (see Patent Document 1 below).
- a filament winding method of winding continuous fibers impregnated with resin there are a sheet winding method of winding prepreg (a sheet made by impregnating fibers with resin).
- the filament winding method can be manufactured at low cost, it is difficult to orient the fibers along the axial direction of the mandrel, in other words, to orient the fibers in the axial direction of the tube.
- the sheet winding method the fibers can be oriented in the axial direction of the mandrel, but the manufacturing cost is high.
- L be the axial dimension in which the fibers are provided in the mandrel
- r be the radius of the outer peripheral surface of the mandrel
- ⁇ be the orientation angle of the fibers with respect to the mandrel (see FIG. 1).
- the present invention has been created to solve such a problem, and is capable of suppressing the displacement of the fibrous body even when the orientation angle of the fibrous body is small while suppressing the manufacturing cost.
- An object of the present invention is to provide a method for manufacturing a tube body.
- the tubular intermediate body of the present invention has a fibrous body arranged so as to extend in the axial direction of the mandrel with respect to the outer peripheral surface of the mandrel, and the outer peripheral surface of the mandrel. It is characterized by including a first fixing member that is wound around the fiber body at least once in the circumferential direction and is wound along the axial direction of the mandrel. Further, in the tube manufacturing method of the present invention, an arrangement step of arranging the fiber body so as to extend in the axial direction of the mandrel with respect to the outer peripheral surface of the mandrel and a first fixing member are placed on the outer peripheral surface of the mandrel.
- the fixing step of winding the mandrel one or more times in the circumferential direction from the top of the mandrel and along the axial direction of the mandrel and the outer peripheral surface of the mandrel include the fiber body. It is characterized by including a molding step of molding the resin into a tubular shape.
- the tubular intermediate 10A shown in FIG. 1 is formed by providing a carbon fiber layer on the outer peripheral surface of the mandrel 1 (see FIG. 2).
- the mandrel 1 is a metal member having a cylindrical shape.
- the tubular body intermediate 10A has a plurality of carbon fiber layers formed in the middle of manufacturing the tubular body 20A (see FIG. 6) described later. It is a laminated cylindrical member.
- the first carbon fiber layer 11 see FIG. 2
- the second carbon fiber layer 12 see FIG. 3
- the third carbon are arranged in this order from the radial inner side (mandrel 1 side).
- a fiber layer 13 is provided.
- the first carbon fiber layer 11, the second carbon fiber layer 12, and the third carbon fiber layer 13 are layers of reinforcing fibers that are encapsulated in the resin 21 in the tubular body 20 described later to reinforce the resin 21.
- the tubular intermediate body 10A includes a first fixing member 13b as a member for fixing the carbon fibers 13a in the third carbon fiber layer 13.
- FIGS. 2 to 4 only a part of each carbon fiber layer 11, 12, 13 is shown.
- the first carbon fiber layer 11 is composed of a plurality of carbon fibers 11a provided on the outer peripheral surface of the mandrel 1 so as to cover the mandrel 1.
- the carbon fibers 11a in the first carbon fiber layer 11 are wound around one or more turns so as to be inclined by 45 ° with respect to the axial direction of the mandrel 1, and are provided so as to extend spirally with respect to the axial direction of the mandrel 1. ing. That is, the orientation angle ⁇ of the carbon fibers 11a with respect to the axis X of the mandrel 1 is 45 °.
- the second carbon fiber layer 12 is provided on the radial outer side of the first carbon fiber layer 11, and a plurality of carbons provided so as to cover the first carbon fiber layer 11. It is composed of fibers 12a.
- the carbon fibers 12a in the second carbon fiber layer 12 are wound around one or more turns so as to be inclined by ⁇ 45 ° with respect to the axial direction of the mandrel 1, and are provided so as to extend spirally with respect to the axial direction of the mandrel 1.
- the orientation angle ⁇ of the carbon fibers 12a with respect to the axis X of the mandrel 1 is ⁇ 45 °.
- the third carbon fiber layer 13 is provided on the radial outer side of the second carbon fiber layer 12, and a plurality of carbons provided so as to cover the second carbon fiber layer 12. It is composed of a fiber 13a and a first fixing member 13b.
- the carbon fibers 13a in the third carbon fiber layer 13 are provided so as to extend parallel to the axial direction of the mandrel 1. That is, the orientation angle ⁇ of the carbon fibers 13a with respect to the axis X of the mandrel 1 is 0 °.
- the length of the carbon fibers 13a is equal to the axial dimension L of the region of the mandrel 1 where the carbon fiber layers 11 to 13 are provided. Since both ends of the mandrel 1 are portions that are gripped by each device or the like, the carbon fiber layers 11 to 14 are not provided.
- the first fixing member 13b is a member for fixing the third carbon fiber layer 13a to the outer peripheral surface of the mandrel 1.
- the first fixing member 13b is a resin member having flexibility such as a thread shape or a strip shape.
- the first fixing member 13b may be formed of the same material as the resin 21 described later, and is formed of a material that is melted by the heat of the molding apparatus (mold) 2 and / or the resin 21 and mixed in the resin 21. May be.
- the first fixing member 13b is wound around one or more turns so as to be inclined with respect to the axial direction of the mandrel 1, and is provided so as to spirally extend in the axial direction of the mandrel 1.
- the first fixing member 13b prevents the carbon fibers 13a arranged on the outer peripheral surface of the mandrel 1 provided (that is, horizontally placed) so as to be horizontal in the axial direction to hang down due to gravity. Specifically, the first fixing member 13b preferably prevents the axially intermediate portion of the carbon fiber 13a arranged below the outer peripheral surface of the mandrel 1 from hanging due to gravity.
- a joint (stub yoke or stub shaft) 22 (see FIG. 5) is provided at one end of the mandrel 1 in the axial direction (step S1, joint installation step).
- a first carbon fiber layer 11 is formed on the outer peripheral surface of the mandrel 1 by an apparatus (not shown) (step S2, first carbon fiber layer forming step).
- a second carbon fiber layer 12 is formed on the outer peripheral surface of the first carbon fiber layer 11 by an apparatus (not shown) (step S3, second carbon fiber layer forming step).
- the carbon fibers 13a of the third carbon fiber layer 13 are formed on the outer peripheral surface of the second carbon fiber layer 12 by an apparatus (not shown) (step S4, third carbon). Fiber layer formation step, placement step).
- a first fixing member 13b is provided on the outer peripheral surface of the carbon fibers 13a in the third carbon fiber layer 13 by a device (not shown), and the carbon fibers 13a are provided with respect to the mandrel 1. It is fixed (step S5, third carbon fiber layer forming step, fixing step).
- the first carbon fiber forming step to fixing step described above is a method for producing a tubular intermediate body 10A.
- the first carbon fiber layer 11, the second carbon fiber layer 12, and the third carbon fiber layer 13 are impregnated with the resin 21 by the molding apparatus (mold) 2, and molded.
- the tubular body 20 is formed (step S6, forming step).
- the resin 21 is, for example, a thermosetting resin.
- the mold of the molding apparatus 2 is divided into a plurality of portions, and in the molding step, heat is applied to the tubular intermediate body 10A, and after the mold closing operation of closing the mold of the molding apparatus 2, further Curing of the resin 21 is promoted by increasing the pressure in the mold by performing the mold clamping operation in which the pressure is applied to the closed mold.
- a joint (stub yoke or stub shaft) 22 is provided at one end in the axial direction of the mandrel 1, and the pipe intermediate 10 extends to the outer peripheral surface of the joint 22. .. Further, in the molding apparatus 2, a space (resin pool 2b) is formed on the outlet side of the gate 2a into which the molten resin 21 is introduced.
- the resin 21 introduced into the molding apparatus 2 moves in the axial direction of the mandrel 1 via the resin pool 2b.
- the resin 21 is impregnated into the first carbon fiber layer 11, the second carbon fiber layer 12, and the third carbon fiber layer 13.
- the tubular body 20 is formed by applying heat to the molding apparatus 2 and applying pressure to the molding apparatus 2 in a state where the resins 21 are impregnated into the carbon fiber layers 11 to 13.
- the first fixing member 13a may be melted by the heat of the molding apparatus (mold) 2 and / or the resin 21 and mixed in the resin 21.
- step S7 decentering step
- step S8 joint attachment step
- the tubular body intermediate 10A includes a fiber body (carbon fiber 13a) arranged so as to extend in the axial direction of the mandrel 1 with respect to the outer peripheral surface of the mandrel 1 and the mandrel 1.
- a first fixing member 14 is provided, which is wound around the outer peripheral surface of the mandrel 1 at least once in the circumferential direction from above the fibrous body and along the axial direction of the mandrel 1.
- the tube body manufacturing method according to the first embodiment of the present invention includes an arrangement step of arranging the fiber body (carbon fiber 13a) so as to extend in the axial direction of the mandrel 1 with respect to the outer peripheral surface of the mandrel 1.
- the first fixing member 14 for fixing the fibrous body to the outer peripheral surface of the mandrel 1 is provided at least one circumference in the circumferential direction from above the fibrous body with respect to the outer peripheral surface of the mandrel 1.
- the tubular intermediate body 10B according to the second embodiment of the present invention further includes a fourth carbon fiber layer 14 provided on the radial outer side of the third carbon fiber layer 13.
- the fourth carbon fiber layer 14 is provided on the radial outer side of the third carbon fiber layer 13, and is provided with a plurality of carbon fibers 14a provided so as to cover the third carbon fiber layer 13, and the first carbon fiber layer 14. It is composed of a fixing member 14b.
- the carbon fibers 14a in the fourth carbon fiber layer 14 are provided so as to extend parallel to the axial direction of the mandrel 1. That is, the orientation angle ⁇ of the carbon fibers 14a with respect to the axis X of the mandrel 1 is 0 °. Further, the length of the carbon fibers 14a is equal to the axial dimension L of the region of the mandrel 1 where the carbon fiber layers 11 to 14 are provided.
- the first fixing member 14b is a member for fixing the fourth carbon fiber layer 14a to the outer peripheral surface of the mandrel 1.
- the first fixing member 14b is a resin member having flexibility such as a thread shape or a strip shape.
- the first fixing member 14b may be formed of the same material as the resin 21 described later, and is formed of a material that is melted by the heat of the molding apparatus (mold) 2 and / or the resin 21 and mixed in the resin 21. May be.
- the first fixing member 14b is wound around one or more turns so as to be inclined with respect to the axial direction of the mandrel 1, and is provided so as to spirally extend in the axial direction of the mandrel 1.
- the first fixing member 14b is provided at different phases in the axial direction of the first fixing member 13b and the mandrel 1 and in parallel with each other. In other words, the first fixing member 14b and the first fixing member 13b are provided so as not to overlap each other in the radial direction of the mandrel 1.
- the first fixing member 14b prevents the carbon fibers 14a arranged on the outer peripheral surface of the mandrel 1 provided (that is, horizontally placed) so as to be horizontal in the axial direction to hang down due to gravity. Specifically, the first fixing member 14b preferably prevents the axially intermediate portion of the carbon fiber 14a arranged below the outer peripheral surface of the mandrel 1 from hanging due to gravity.
- the carbon fibers 13a of the third carbon fiber layer 13 are formed on the outer peripheral surface of the second carbon fiber layer 12 (see FIG. 7) by an apparatus (not shown).
- Step S4 third carbon fiber layer forming step, arranging step).
- a first fixing member 13b is provided on the outer peripheral surface of the carbon fiber 13a in the third carbon fiber layer 13 by a device (not shown), and the carbon fiber 13a is provided on the outer peripheral surface of the carbon fiber 13a.
- Step S5 third carbon fiber layer forming step, fixing step.
- step S4B Carbon fiber layer formation step, placement step).
- a first fixing member 14b is provided on the outer peripheral surface of the carbon fiber 14a in the fourth carbon fiber layer 14 by a device (not shown), and the carbon fiber 14a is provided on the outer peripheral surface of the carbon fiber 14a.
- Step S5B fourth carbon fiber layer forming step, fixing step.
- the carbon fibers 13a and 14a in the carbon fiber layers 13 and 14 are densely arranged in the circumferential direction, and the outer carbon fibers 14a are the inner carbon fiber layers 13a and the inner carbon fiber layers 13a. It is provided so as to be overlapped on the radial outer side of the first fixing member 13b.
- the carbon fibers 13a in the third carbon fiber layer 13 are arranged with a gap in the circumferential direction, and the carbon fibers 14a in the fourth carbon fiber layer 14 are carbon. It is arranged in the gap between the fibers 13.
- the carbon fibers 14a in the fourth carbon fiber layer 14 are provided so as to be overlapped on the radial outer side of the first fixing member 13b in the third carbon fiber layer 13.
- each of the first fixing members 13b and 14b The number of carbon fibers 13a and 14a to be fixed can be reduced, and the design freedom of the first fixing members 13b and 13b can be improved.
- the tubular intermediate body 10B has a plurality of fiber layers composed of the fiber body and the first fixing member, and the plurality of fiber layers (carbon fibers 13a, 14a). Are arranged so as to overlap in the radial direction of the mandrel 1, and at least the first fixing member 13b in the fiber layer 13 corresponding to the lower layer and the fiber in the fiber layer 14 corresponding to the upper layer of the lower layer
- the body (carbon fiber 14a) is overlapped in the radial direction, and the first fixing members 13b and 14b provided on the plurality of fiber layers are in different phases (and) in the axial direction of the mandrel. , Are provided parallel to each other (at the same orientation angle).
- the first fixing member 14b and the first fixing member 13b are provided so as not to overlap each other in the radial direction of the mandrel 1.
- the fibrous body and the first fixing member are used by repeating the arrangement step and the fixing step a plurality of times before the molding step.
- a plurality of constituent fiber layers are formed so as to be arranged so as to be overlapped in the radial direction of the mandrel 1, and at least correspond to the first fixing member 13b in the fiber layer corresponding to the lower layer and the upper layer of the lower layer.
- the fiber bodies (carbon fibers 14a) in the fiber layer are stacked in the radial direction, and the first fixing members 13b and 14b provided in the plurality of fiber layers are provided in the plurality of fixing steps.
- the mandrel 1 is provided in different phases in the axial direction. According to such a configuration, the deviation of the fibrous body can be more preferably suppressed even when the orientation angle ⁇ of the fibrous body is small. Further, as compared with the case where the first fixing members 13b and 14b are provided so as to overlap each other in the radial direction in the same phase, the thickness of the tubular intermediate 10b is suppressed and the local stress concentration is suppressed. can do.
- the tubular intermediate body 10C according to the third embodiment of the present invention has a pair of second fixing members 15 and 15 as members for fixing the third carbon fiber layer 13. Be prepared.
- the second fixing member 15 is a member for fixing the end portion of the third carbon fiber layer 13 to the outer peripheral surface of the axial end portion of the mandrel 1.
- the second fixing member 15 is a strip-shaped flexible resin member, and has an adhesive portion on one surface (inner surface in the radial direction).
- the second fixing member 15 is wound in an annular shape.
- the second fixing member 15 may be formed of the same material as the resin 21, and is melted by the heat of the molding apparatus (mold) 2 and / or the resin 21 to make the resin. It may be formed of the material mixed in 21.
- step S4B the fourth carbon fiber layer forming step
- step S4B the forming step
- step S6 the second fixing members 15 and 15 are placed on the outer peripheral surfaces of both ends of the fourth carbon fiber layer 14 by a device (not shown). Both ends of the third carbon fiber layer 13 and the fourth carbon fiber layer 14 are fixed to the mandrel 1 (step S5C, both ends fixing step). It is desirable that the fixing is performed before the fixing by the first fixing members 14b and 14b (step S5B). Further, the fixing by the second fixing members 15 and 15 is a third carbon fiber layer forming step. (Step S4) and the fourth carbon fiber layer forming step (step S4B may also be performed.
- the tubular intermediate body 10C according to the third embodiment of the present invention includes a second fixing member 15 for fixing both ends of the fibrous body to the outer peripheral surface of the mandrel 1. Further, in the tube body manufacturing method according to the third embodiment of the present invention, in the fixing step, both ends of the fiber body are fixed to the outer peripheral surface of the mandrel 1 by the second fixing member 15. According to such a configuration, the deviation of the fibrous body can be more preferably suppressed even when the orientation angle ⁇ of the fibrous body is small.
- the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the gist of the present invention.
- the first carbon fiber layer 11 and the second carbon fiber layer 12 may be omitted, and the third carbon fiber layer 13 may be provided directly on the outer surface of the mandrel 1.
- the orientation angles ⁇ of the carbon fibers 13a and 14a in the third carbon fiber layer 13 and the fourth carbon fiber layer 14 are not limited to 0 ° (parallel to the axial direction of the mandrel 1), and the carbon fibers 13a and 14a are not limited to 0 °. Is an angle that is less than one lap with respect to the mandrel 1.
- the present invention is preferably used when the orientation angle ⁇ of the carbon fibers 13a satisfies tan ⁇ ⁇ 2 ⁇ r / L
- the fiber bodies used for the tube body intermediates 10A to 10C are not limited to the carbon fibers 11a to 14a, and may be any one capable of strengthening the tube body 20.
- the plurality of first fixing members 13b may be provided in different phases in the axial direction of the mandrel 1 and in parallel with each other.
- the plurality of first fixing members 13b and the plurality of first fixing members 14b are provided in different phases in the axial direction of the mandrel 1 and in parallel with each other. There may be.
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Abstract
Description
また、本発明の管体製造方法は、繊維体を、マンドレルの外周面に対して当該マンドレルの軸線方向に伸びるように配置する配置ステップと、第一の固定部材を、前記マンドレルの外周面に対して、前記繊維体の上から周方向に1周以上で、かつ、当該マンドレルの軸線方向に沿って巻回する固定ステップと、前記マンドレルの外周面上において、前記繊維体を内包するように樹脂を管状に成形する成形ステップと、を含むことを特徴とする。
図1に示す管体中間体10Aは、マンドレル1(図2参照)の外周面に炭素繊維層を設けることによって形成される。図2に示すように、マンドレル1は、円筒形状を呈する金属製部材である。
図1に示すように、本発明の第一の実施形態に係る管体中間体10Aは、後記する管体20A(図6参照)を製造する途中段階で形成される、複数の炭素繊維層が積層された円筒状の部材である。管体中間体10Aは、径方向内側(マンドレル1側)から順に、第一の炭素繊維層11(図2参照)と、第二の炭素繊維層12(図3参照)と、第三の炭素繊維層13(図4参照)と、を備える。第一の炭素繊維層11、第二の炭素繊維層12及び第三の炭素繊維層13は、後記する管体20における樹脂21に内包されて当該樹脂21を強化する強化繊維の層である。また、管体中間体10Aは、第三の炭素繊維層13において炭素繊維13aを固定するための部材として、第一の固定部材13bを備える。なお、図2~図4において、各炭素繊維層11,12,13は、一部のみが図示されている。
図2に示すように、第一の炭素繊維層11は、マンドレル1の外周面に対して、当該マンドレル1を被覆するように設けられる複数の炭素繊維11aによって構成されている。第一の炭素繊維層11における炭素繊維11aは、マンドレル1の軸線方向に対して45°傾斜するように1周以上巻回され、マンドレル1の軸線方向に対して螺旋状に伸びるように設けられている。すなわち、マンドレル1の軸線Xに対する炭素繊維11aの配向角度θは、45°である。
図3に示すように、第二の炭素繊維層12は、第一の炭素繊維層11の径方向外側に設けられており、第一の炭素繊維層11を被覆するように設けられる複数の炭素繊維12aによって構成されている。第二の炭素繊維層12における炭素繊維12aは、マンドレル1の軸線方向に対して-45°傾斜するように1周以上巻回され、マンドレル1の軸線方向に対して螺旋状に伸びるように設けられている。すなわち、マンドレル1の軸線Xに対する炭素繊維12aの配向角度θは、-45°である。
図4に示すように、第三の炭素繊維層13は、第二の炭素繊維層12の径方向外側に設けられており、第二の炭素繊維層12を被覆するように設けられる複数の炭素繊維13aと、第一の固定部材13bと、によって構成されている。第三の炭素繊維層13における炭素繊維13aは、マンドレル1の軸線方向に対して平行に伸びるように設けられている。すなわち、マンドレル1の軸線Xに対する炭素繊維13aの配向角度θは、0°である。また、炭素繊維13aの長さは、マンドレル1のうち、各炭素繊維層11~13が設けられる領域の軸線方向寸法Lと等しい。なお、マンドレル1の両端部は、各装置等によって把持される部位であるため、各炭素繊維層11~14は設けられない。
図1に示すように、第一の固定部材13bは、第三の炭素繊維層13aをマンドレル1の外周面に固定するための部材である。第一の固定部材13bは、糸状、帯状等の可撓性を有する樹脂製部材である。第一の固定部材13bは、後記する樹脂21と同一材料によって形成されていてもよく、成形装置(金型)2及び/又は樹脂21の熱によって溶融して樹脂21内に混ざる材料によって形成されていてもよい。第一の固定部材13bは、マンドレル1の軸線方向に対して傾斜するように1周以上巻回され、マンドレル1の軸線方向に螺旋状に伸びるように設けられている。
続いて、第一の実施形態に係る管体中間体10Aを経由する管体20A(図6参照)の製造方法について、図7のフローチャートを用いて説明する。
また、本発明の第一の実施形態に係る管体製造方法は、繊維体(炭素繊維13a)を、マンドレル1の外周面に対して当該マンドレル1の軸線方向に伸びるように配置する配置ステップと、前記繊維体を前記マンドレル1の外周面に対して固定する第一の固定部材14を、前記マンドレル1の外周面に対して、前記繊維体の上から周方向に1周以上で、かつ、当該マンドレル1の軸線方向に沿って巻回する固定ステップと、前記マンドレル1の外周面上において、樹脂21を前記繊維体に含浸させ、含浸した前記樹脂21を加熱することによって成形する成形ステップと、を含む。
かかる構成によると、製造コストを抑えつつ、繊維体の配向角度θが小さい場合でも繊維のずれを抑えることができる。
続いて、本発明の第二の実施形態に係る管体中間体及び管体製造方法について、第一の実施形態との相違点を中心に説明する。
第四の炭素繊維層14は、第三の炭素繊維層13の径方向外側に設けられており、第三の炭素繊維層13を被覆するように設けられる複数の炭素繊維14aと、第一の固定部材14bと、によって構成されている。第四の炭素繊維層14における炭素繊維14aは、マンドレル1の軸線方向に対して平行に伸びるように設けられている。すなわち、マンドレル1の軸線Xに対する炭素繊維14aの配向角度θは、0°である。また、炭素繊維14aの長さは、マンドレル1のうち、各炭素繊維層11~14が設けられる領域の軸線方向寸法Lと等しい。
第一の固定部材14bは、第四の炭素繊維層14aをマンドレル1の外周面に固定するための部材である。第一の固定部材14bは、糸状、帯状等の可撓性を有する樹脂製部材である。第一の固定部材14bは、後記する樹脂21と同一材料によって形成されていてもよく、成形装置(金型)2及び/又は樹脂21の熱によって溶融して樹脂21内に混ざる材料によって形成されていてもよい。第一の固定部材14bは、マンドレル1の軸線方向に対して傾斜するように1周以上巻回され、マンドレル1の軸線方向に螺旋状に伸びるように設けられている。第一の固定部材14bは、第一の固定部材13bとマンドレル1の軸線方向において異なる位相で、かつ、互いに平行に設けられている。換言すると、第一の固定部材14b及び第一の固定部材13bは、マンドレル1の径方向において互いに重ならないように設けられている。
続いて、第二の実施形態に係る管体中間体10Bを経由する管体20B(図12参照)の製造方法について、図10のフローチャートを用いて説明する。
また、本発明の第二の実施形態に係る管体製造方法では、前記成形ステップの前に、前記配置ステップ及び前記固定ステップを複数回繰り返すことによって、前記繊維体及び前記第一の固定部材によって構成される繊維層を前記マンドレル1の径方向に重ねて配置されるように複数形成し、少なくとも、下層に該当する前記繊維層における前記第一の固定部材13bと、前記下層の上層に該当する前記繊維層における前記繊維体(炭素繊維14a)とは、径方向において重ねられており、複数回の前記固定ステップにおいて、複数の前記繊維層にそれぞれ設けられる前記第一の固定部材13b,14bを、前記マンドレル1の軸線方向において互いに異なる位相で設ける。
かかる構成によると、繊維体の配向角度θが小さい場合でも繊維体のずれをより好適に抑えることができる。また、第一の固定部材13b,14bが同位相で径方向において互いに重なるように設けられている場合と比較して、管体中間体10bの厚みを抑制するとともに、局所的な応力集中を抑制することができる。
続いて、本発明の第三の実施形態に係る管体中間体及び管体製造方法について、第二の実施形態との相違点を中心に説明する。
第二の固定部材15は、第三の炭素繊維層13の端部をマンドレル1における軸線方向端部の外周面に固定するための部材である。第二の固定部材15は、帯状の可撓性を有する樹脂製部材であり、一面(径方向内面)側に粘着部を有する。第二の固定部材15は、環状に巻回されている。第二の固定部材15は、第一の固定部材14と同様に、樹脂21と同一材料によって形成されていてもよく、成形装置(金型)2及び/又は樹脂21の熱によって溶融して樹脂21内に混ざる材料によって形成されていてもよい。
続いて、第三の実施形態に係る管体中間体10Cを経由する管体の製造方法について、図14のフローチャートを用いて説明する。
また、本発明の第三の実施形態に係る管体製造方法では、前記固定ステップにおいて、第二の固定部材15によって、前記繊維体の両端部を前記マンドレル1の外周面に対して固定する。
かかる構成によると、繊維体の配向角度θが小さい場合でも繊維体のずれをより好適に抑えることができる。
10A,10B,10C 管体中間体
13a,14a 炭素繊維(繊維体)
13b,14b 第一の固定部材
15 第二の固定部材
20A,20B 管体
21 樹脂
Claims (6)
- マンドレルの外周面に対して当該マンドレルの軸線方向に伸びるように配置される繊維体と、
前記マンドレルの外周面に対して、前記繊維体の上から周方向に1周以上で、かつ、当該マンドレルの軸線方向に沿って巻回される第一の固定部材と、
を備えることを特徴とする管体中間体。 - 前記繊維体及び前記第一の固定部材によって構成される繊維層を複数有し、
複数の前記繊維層は、前記マンドレルの径方向に重ねて配置されており、
少なくとも、下層に該当する前記繊維層における前記第一の固定部材と、前記下層の上層に該当する前記繊維層における前記繊維体とは、径方向において重ねられており、
複数の前記繊維層にそれぞれ設けられる前記第一の固定部材は、前記マンドレルの軸線方向において互いに異なる位相で設けられている
ことを特徴とする請求項1に記載の管体中間体。 - 前記繊維体の両端部を前記マンドレルの外周面に対して固定する第二の固定部材を備える
ことを特徴とする請求項1又は請求項2に記載の管体中間体。 - 繊維体を、マンドレルの外周面に対して当該マンドレルの軸線方向に伸びるように配置する配置ステップと、
前記繊維体を前記マンドレルの外周面に対して固定する第一の固定部材を、前記マンドレルの外周面に対して、前記繊維体の上から周方向に1周以上で、かつ、当該マンドレルの軸線方向に沿って巻回する固定ステップと、
前記マンドレルの外周面上において、樹脂を前記繊維体に含浸させ、含浸した前記樹脂を加熱することによって成形する成形ステップと、
を含むことを特徴とする管体製造方法。 - 前記成形ステップの前に、前記配置ステップ及び前記固定ステップを複数回繰り返すことによって、前記繊維体及び前記第一の固定部材によって構成される繊維層を前記マンドレルの径方向に重ねて配置されるように複数形成し、
少なくとも、下層に該当する前記繊維層における前記第一の固定部材と、前記下層の上層に該当する前記繊維層における前記繊維体とは、径方向において重ねられており、
複数回の前記固定ステップにおいて、複数の前記繊維層にそれぞれ設けられる前記第一の固定部材を、前記マンドレルの軸線方向において互いに異なる位相で設ける
ことを特徴とする請求項4に記載の管体製造方法。 - 前記固定ステップにおいて、
第二の固定部材によって、前記繊維体の両端部を前記マンドレルの外周面に対して固定する
ことを特徴とする請求項4又は請求項5に記載の管体製造方法。
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JP2017115938A (ja) * | 2015-12-22 | 2017-06-29 | ニッタ株式会社 | 高圧容器および高圧容器の製造方法 |
JP2020036767A (ja) * | 2018-09-05 | 2020-03-12 | 三菱ケミカル株式会社 | ゴルフクラブ用シャフト及びその製造方法 |
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2020
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- 2020-03-19 CN CN202080094729.3A patent/CN115023338B/zh active Active
- 2020-03-19 WO PCT/JP2020/012536 patent/WO2021186734A1/ja active Application Filing
- 2020-03-19 KR KR1020227031827A patent/KR20220140819A/ko unknown
- 2020-03-19 DE DE112020006109.4T patent/DE112020006109T5/de active Pending
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Patent Citations (3)
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JPH08187797A (ja) * | 1995-01-10 | 1996-07-23 | Murata Mach Ltd | 筒状繊維強化プラスチックの製造方法及び装置 |
JPH08205650A (ja) * | 1995-01-31 | 1996-08-13 | Toray Ind Inc | 刈払機操作桿用主管およびその製造方法 |
JP2015145104A (ja) * | 2014-02-03 | 2015-08-13 | 本田技研工業株式会社 | 軸状複合部材及びその製造方法 |
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CN115023338B (zh) | 2024-03-08 |
JPWO2021186734A1 (ja) | 2021-09-23 |
JP7290794B2 (ja) | 2023-06-13 |
US20220381373A1 (en) | 2022-12-01 |
DE112020006109T5 (de) | 2022-11-03 |
KR20220140819A (ko) | 2022-10-18 |
CN115023338A (zh) | 2022-09-06 |
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