JP2001150547A - Resin pipe and method for molding this resin pipe - Google Patents
Resin pipe and method for molding this resin pipeInfo
- Publication number
- JP2001150547A JP2001150547A JP34037199A JP34037199A JP2001150547A JP 2001150547 A JP2001150547 A JP 2001150547A JP 34037199 A JP34037199 A JP 34037199A JP 34037199 A JP34037199 A JP 34037199A JP 2001150547 A JP2001150547 A JP 2001150547A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- laminate
- shrinkable tube
- resin
- resin pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、シート状の樹脂を
マンドレールに巻着させて積層したものを硬化させた樹
脂製パイプの成形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a resin pipe formed by winding a sheet-shaped resin around a mandrel and laminating the same.
【０００２】[0002]
【従来の技術】例えば、航空機や人工衛星といった宇宙
飛行船等の構造体に使用されるパイプは、高い強度や弾
性率を要求されるとともに、軽量かつ耐熱に優れたもの
が要求されているため、近年、炭素繊維等に樹脂を含浸
させた繊維強化樹脂から成るものが用いられている。2. Description of the Related Art For example, pipes used for structures of spaceships such as aircraft and artificial satellites are required to have high strength and elastic modulus, and are required to be lightweight and excellent in heat resistance. In recent years, a fiber reinforced resin obtained by impregnating a resin into carbon fiber or the like has been used.
【０００３】このような繊維強化樹脂から成るパイプ
は、従来、以下の工程を経ることにより成形されてい
た。即ち、所定径の円筒状マンドレールにカーボンファ
イバーを含んだ繊維強化樹脂（ＣＦＲＰ：Carbon Fiber
Reinforced Plastics）プリプレグシートを巻着し、そ
の上から所定幅の加圧テープをテンションをかけながら
螺旋状に巻き付けた後、加熱することにより成形してい
た。[0003] A pipe made of such a fiber-reinforced resin has conventionally been formed through the following steps. That is, a fiber reinforced resin (CFRP: Carbon Fiber) containing carbon fiber in a cylindrical mandrail of a predetermined diameter.
Reinforced Plastics) A prepreg sheet was wound, and a pressure tape having a predetermined width was spirally wound therefrom while applying tension, and then heated to be formed.
【０００４】上記成形方法（以下、従来例１という。）
では、プリプレグシートの積層体上に加圧テープを巻い
た後、硬化させているため、加圧テープの形状が積層体
表面に転写され、図４で示すような渦巻き状の凹凸が樹
脂製パイプの表面に発生してしまうという欠点があっ
た。この欠点を解決する従来技術として、金型を用いて
パイプを成形する以下の方法が挙げられる。The above molding method (hereinafter referred to as Conventional Example 1)
Then, since the pressure tape is wound on the laminate of the prepreg sheet and then cured, the shape of the pressure tape is transferred to the surface of the laminate, and the spiral unevenness as shown in FIG. There is a disadvantage that it occurs on the surface of the surface. As a conventional technique for solving this drawback, there is the following method of forming a pipe using a mold.
【０００５】即ち、金型のキャビティの内側に繊維強化
樹脂プリプレグシートを積層させた後、キャビティ内に
エア圧等を加えて加圧しながら加熱することにより、積
層体を硬化させて樹脂製パイプを得る方法（以下、従来
例２という。）である。かかる成形方法によれば、積層
体の表面に対し加圧テープを巻着させることが不要とな
るため、平滑な表面の樹脂製パイプを得ることができ
る。That is, after laminating a fiber-reinforced resin prepreg sheet inside a mold cavity, the cavity is heated while applying air pressure or the like to the cavity, whereby the laminate is cured to form a resin pipe. (Hereinafter referred to as Conventional Example 2). According to such a molding method, it is not necessary to wind the pressure tape around the surface of the laminate, so that a resin pipe having a smooth surface can be obtained.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記従
来例１及び従来例２にあっては、以下の問題があった。
即ち、従来例１においては、既述の如く樹脂製パイプの
表面に加圧テープの形状の転写による凹凸が発生してし
まい、外観状、外径寸法の精度上好ましくないという問
題があり、また、加圧や加熱等の条件によっては、巻着
した加圧テープの間から積層体の樹脂が流れ出すことも
あるため、パイプの厚みのコントロールが難しいという
問題があった。However, the conventional examples 1 and 2 have the following problems.
That is, in the conventional example 1, as described above, irregularities due to the transfer of the shape of the pressure tape are generated on the surface of the resin pipe, and there is a problem that the appearance, the accuracy of the outer diameter are not preferable, and Depending on conditions such as pressurization and heating, the resin of the laminate may flow out from between the wound pressure tapes, so that there is a problem that it is difficult to control the thickness of the pipe.
【０００７】一方、従来例２においては、金型のキャビ
ティ内側にプリプレグシートを積層させる必要があるた
め、作業性が悪く製造コストが増大してしまうという問
題があるとともに、型が大掛かりになりイニシャルコス
トが増大してしまうという問題があった。On the other hand, in the conventional example 2, since the prepreg sheet needs to be laminated inside the cavity of the mold, there is a problem that the workability is poor and the production cost is increased, and the mold becomes large and the initials are increased. There is a problem that the cost increases.
【０００８】本発明は、このような事情に鑑みてなされ
たもので、外側表面を平滑化するとともに、製造過程に
おける作業性を向上させることができる樹脂製パイプ及
びその成形方法を提供することを目的とする。The present invention has been made in view of such circumstances, and provides a resin pipe capable of smoothing an outer surface and improving workability in a manufacturing process, and a method of molding the same. Aim.
【０００９】[0009]
【課題を解決するための手段】請求項１記載の発明は、
マンドレールにシート状の樹脂を巻着して積層体を得る
積層工程と、該積層工程で得られた積層体外側に、当該
積層体より広い幅又は略同一幅の熱収縮チューブを被覆
させるチューブ被覆工程と、前記熱収縮チューブにより
被覆された状態で前記積層体を加熱し、前記熱収縮チュ
ーブを収縮させる加熱工程と、を含んだ製造工程を経て
成形されたことを特徴とする。According to the first aspect of the present invention,
A laminating step of winding a sheet-like resin around a mandrel to obtain a laminated body, and a tube for coating a heat-shrinkable tube having a width wider than or substantially equal to that of the laminated body on the outside of the laminated body obtained in the laminating step. It is characterized by being formed through a manufacturing step including a coating step and a heating step of heating the laminate in a state of being covered with the heat-shrinkable tube to shrink the heat-shrinkable tube.
【００１０】かかる構成によれば、積層工程を経てマン
ドレールに巻着された樹脂は、チューブ被覆工程により
被覆された熱収縮チューブが加熱工程にて収縮すること
により、その外表面から内側に加圧される。従って、加
熱工程においては、加熱と物理的加圧が同時に行われ
る。According to this configuration, the resin wound around the mandrel through the laminating step is applied from the outer surface to the inside by the heat-shrinkable tube covered in the tube covering step contracting in the heating step. Pressed. Therefore, in the heating step, heating and physical pressurization are performed simultaneously.
【００１１】請求項２記載の発明は、マンドレールにシ
ート状の樹脂を巻着して積層させる積層工程と、該積層
工程で得られた積層体外側に、当該積層体より広い幅又
は略同一幅の熱収縮チューブを被覆させるチューブ被覆
工程と、前記熱収縮チューブにより被覆された状態で前
記積層体を加熱し、前記熱収縮チューブを収縮させる加
熱工程と、を含むことを特徴とする。According to a second aspect of the present invention, there is provided a laminating step in which a sheet-like resin is wound around a mandrel and laminated, and a width wider than or substantially equal to the width of the laminated body obtained in the laminating step. The method includes a tube coating step of coating a heat-shrinkable tube having a width, and a heating step of heating the laminate while being covered with the heat-shrinkable tube to shrink the heat-shrinkable tube.
【００１２】請求項３記載の発明は、前記積層体を構成
する樹脂が、強化繊維に含浸された繊維強化樹脂である
ことを特徴とするThe invention according to claim 3 is characterized in that the resin constituting the laminate is a fiber reinforced resin impregnated with reinforcing fibers.
【００１３】請求項４記載の発明は、前記チューブ被覆
工程と加熱工程との間に、前記熱収縮チューブ上に所定
幅の加圧テープを巻着させる加圧テープ巻着工程を有す
ることを特徴とする。According to a fourth aspect of the present invention, a pressure tape winding step of winding a pressure tape having a predetermined width on the heat-shrinkable tube is provided between the tube coating step and the heating step. And
【００１４】請求項５記載の発明は、前記加熱工程の前
に、前記マンドレールに巻着された積層体を真空バッグ
することを特徴とする。According to a fifth aspect of the present invention, the laminate wound around the mandrel is vacuum bagged before the heating step.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら具体的に説明する。本実施形態に
係る樹脂製パイプは、所謂シートワインディング法等に
より繊維強化樹脂プリプレグシートを渦巻き状に積層し
て硬化させたものであり、主に、積層工程と、チューブ
被覆工程と、加圧テープ巻着工程と、を経て成形された
ものである。Embodiments of the present invention will be specifically described below with reference to the drawings. The resin pipe according to the present embodiment is obtained by spirally laminating and curing fiber-reinforced resin prepreg sheets by a so-called sheet winding method or the like, and mainly includes a laminating step, a tube covering step, and a pressure tape. And a winding step.
【００１６】積層工程は、図１（ａ）に示すように、所
定径ｔ０の円筒状マンドレール１にプリプレグシートを
巻着して、所望厚みｔ１の積層体２を得る工程であり、
該マンドレール１は、成形時の加熱、加圧で変形しない
金属、樹脂等から成るとともに、その所定径ｔ０は、成
形する樹脂製パイプの内径と略等しい外径とされてい
る。尚、マンドレール１の形状は、製品形状に合わせた
他の形状（例えば、角柱形状や径が連続的に変化する形
状）とすることができる。The lamination step, as shown in FIG. 1 (a), and wound around the prepreg sheet into a cylindrical shape command rail 1 having a predetermined diameter t 0, a step of obtaining a laminate 2 of a desired thickness t 1,
The command rail 1 is heated during molding, the metal is not deformed under pressure, along with made of resin or the like, the predetermined diameter t 0 is the outer diameter substantially equal to the inner diameter of the resin pipe to be molded. Note that the shape of the mandrel 1 can be another shape (for example, a prism shape or a shape whose diameter changes continuously) according to the product shape.
【００１７】また、マンドレール１に巻着するプリプレ
グシートは、エポキシ樹脂を硬化剤と共に、所望の方向
に織り込まれた炭素繊維に加熱含浸後、加熱半硬化の状
態にとどめたものであり、含浸される繊維としては、炭
素繊維の他、ガラス繊維、ケプラー繊維等を用いること
ができる。尚、加圧、成形が可能であれば、他の熱硬化
性樹脂（フェノール、シアネート等）或いは熱可塑性樹
脂（ポリブチレン、ポリエステル等で１５０℃以下の温
度で溶融若しくは軟化して繊維に含浸が可能なもの）を
プリプレグシートのマトリックスとして用いてもよい。The prepreg sheet to be wound around the mandrel 1 is obtained by impregnating a carbon fiber woven in a desired direction with an epoxy resin together with a curing agent, and then keeping it in a semi-cured state by heating. As the fiber to be used, besides carbon fiber, glass fiber, Kepler fiber and the like can be used. In addition, if pressurization and molding are possible, the fiber can be impregnated with other thermosetting resin (phenol, cyanate, etc.) or thermoplastic resin (polybutylene, polyester, etc.) by melting or softening at a temperature of 150 ° C or less. May be used as the matrix of the prepreg sheet.
【００１８】炭素繊維が織り込まれる方向は、縦方向の
み、横方向のみ、傾斜した方向のみ、及びこれらを組み
合わせた方向とすることができ、パイプが要求される強
度及び強度が必要とされる方向に応じて選択される。
尚、ここで使用される繊維は、強度上、短繊維（ステー
プル）より長繊維（フィラメント）の方が好ましい。The direction in which the carbon fiber is woven can be only the vertical direction, only the horizontal direction, only the inclined direction, or a combination thereof, and the direction in which the pipe is required to have the required strength and strength. Is selected according to
The fibers used here are preferably longer fibers (filaments) than short fibers (staples) in terms of strength.
【００１９】チューブ被覆工程は、図１（ｂ）で示すよ
うに、積層工程で積層されたプリプレグシート（積層体
２）外側に、このプリプレグシートより広い幅又は略同
一幅の熱収縮チューブ３を被覆させる工程である。この
熱収縮チューブ３は、例えば１２０〜１５０℃程度の加
熱により収縮する材料から成り、例えばポリオレフィ
ン、ポリ塩化ビニル、ポリフッ化ビニリデン等を用いる
のが好ましい。In the tube coating step, as shown in FIG. 1B, a heat-shrinkable tube 3 having a width larger than or substantially equal to the width of the prepreg sheet is placed on the outside of the prepreg sheet (laminate 2) laminated in the laminating step. This is the step of coating. The heat-shrinkable tube 3 is made of a material that shrinks when heated at, for example, about 120 to 150 ° C., and is preferably made of, for example, polyolefin, polyvinyl chloride, polyvinylidene fluoride, or the like.
【００２０】また、熱収縮チューブ３の肉厚ｔ２は、後
工程で巻着される加圧テープ４の形状が積層体２の表面
に転写されない厚さとする必要があるが、あまり厚くな
ると熱収縮の不均一が生じて積層体２表面に対する加圧
力がばらつき、成形後のパイプの表面状態が悪化するた
め、適当な範囲の厚さとする必要がある。また、熱収縮
チューブ３は、熱収縮チューブ３に対する積層体２の挿
通作業を容易とするため、積層体２の外径より若干大き
めの内径（例えば、積層体２の外表面と熱収縮チューブ
３との間のクリアランスを１〜２mm程度）のものを用い
るのが好ましい。The thickness t 2 of the heat-shrinkable tube 3 needs to be such that the shape of the pressure tape 4 to be wound in a later step is not transferred to the surface of the laminate 2. Since the pressure applied to the surface of the laminate 2 varies due to uneven shrinkage and the surface condition of the formed pipe deteriorates, it is necessary to set the thickness in an appropriate range. The heat-shrinkable tube 3 has an inner diameter slightly larger than the outer diameter of the laminate 2 (for example, the outer surface of the laminate 2 and the heat-shrinkable tube 3) in order to facilitate the operation of inserting the laminate 2 into the heat-shrinkable tube 3. (With a clearance of about 1 to 2 mm).
【００２１】更に、熱収縮チューブ３の内周面には、成
形後のパイプとの離型性を向上すべく離型処理を施して
おくのが好ましく、離型処理として離型剤の塗布或いは
離型性フィルムを熱収縮チューブ３の内周面に配置する
こと等が挙げられる。尚、熱収縮チューブ３の材質を離
型作用のあるもの、例えばポリオレフィン等とすれば、
離型剤の塗布や離型性フィルムの配置を不要とし、作業
性を向上することができる。Further, it is preferable that the inner peripheral surface of the heat-shrinkable tube 3 is subjected to a release treatment in order to improve the releasability from the molded pipe. For example, disposing a release film on the inner peripheral surface of the heat-shrinkable tube 3 may be mentioned. If the material of the heat-shrinkable tube 3 is a material having a releasing effect, for example, polyolefin,
This eliminates the need for applying a release agent or disposing a release film, thereby improving workability.
【００２２】加圧テープ巻着工程は、図１（ｃ）で示す
ように、熱収縮チューブ３上に所定幅の加圧テープ４を
巻着させる工程であり、積層体２を被覆した状態の熱収
縮チューブ３表面にテンションをかけながら加圧テープ
４を巻き付け、積層体２の表面からその中心に向かって
加圧している。加圧テープ４は、ポリプロピレン、ポリ
エチレンテレフタレート等から成り、公知のテンション
コントローラにより加える圧力をテープ幅１５mmあたり
１〜１０kgとするのが好ましい。The pressure tape winding step is a step of winding a pressure tape 4 having a predetermined width on the heat-shrinkable tube 3 as shown in FIG. A pressure tape 4 is wound around the surface of the heat-shrinkable tube 3 while applying tension, and pressure is applied from the surface of the laminate 2 toward the center thereof. The pressure tape 4 is made of polypropylene, polyethylene terephthalate, or the like, and the pressure applied by a known tension controller is preferably 1 to 10 kg per 15 mm of the tape width.
【００２３】次に、上記チューブ被覆工程及び加圧テー
プ巻着工程を経て熱収縮チューブ３及び加圧テープ４が
巻着された積層体２に対し、図２に示すように、真空バ
ッグを施す。真空バッグは、ナイロン製バッグ５（通常
オートクレーブ成型に使用するもの）に積層体２を入れ
た後密封し、図示しない負圧発生装置から延びたホース
６先端を空気抜き孔５ａに取り付けて、ナイロン製バッ
グ５内の空気を抜くことにより行われる。Next, as shown in FIG. 2, a vacuum bag is applied to the laminate 2 on which the heat-shrinkable tube 3 and the pressure tape 4 have been wound through the tube coating step and the pressure tape winding step. . The vacuum bag is formed by putting the laminate 2 in a nylon bag 5 (usually used for autoclave molding), sealing it, and attaching the end of a hose 6 extending from a negative pressure generator (not shown) to an air vent hole 5a. This is performed by bleeding air from the bag 5.
【００２４】かかる真空バッグにより、積層体２におけ
るプリプレグシート層間をより強固に密着させることが
でき、プリプレグシート間に隙間が生じて剛性の低下を
生じさせるのを防止することができる。尚、真空バッグ
の方法は、上記方法に限定されるものではなく、他の態
様による真空バッグを施してもよい。With such a vacuum bag, the layers of the prepreg sheets in the laminate 2 can be more firmly adhered to each other, and it is possible to prevent a gap from being formed between the prepreg sheets and a reduction in rigidity. In addition, the method of the vacuum bag is not limited to the above method, and a vacuum bag according to another embodiment may be applied.
【００２５】加熱工程は、熱収縮チューブ３により被覆
された状態で積層体２を加熱し、熱収縮チューブ３を収
縮させる工程であり、例えばオートクレーブで１〜１０
kg/cm2の圧力をかけて加熱成形（例えば、熱硬化性樹脂
のマトリックスから成る積層体においては、１３０〜１
８０℃程度）するのが好ましい。かかるオートクレーブ
による成形では、積層体２に対して等方圧がかかるの
で、成形後のパイプにおける表面状態をより良好とする
ことができる。尚、オートクレーブによる加熱に代え
て、他の加熱方法（例えば、オーブン中で加熱する方法
等）により積層体２を加熱してもよい。The heating step is a step of heating the laminate 2 while being covered with the heat-shrinkable tube 3 to shrink the heat-shrinkable tube 3.
kg / cm 2 under pressure (for example, in the case of a laminate comprising a matrix of thermosetting resin, 130 to 1
(Approximately 80 ° C.). In the molding by such an autoclave, an isotropic pressure is applied to the laminate 2, so that the surface condition of the molded pipe can be made better. Note that, instead of heating by the autoclave, the laminate 2 may be heated by another heating method (for example, a method of heating in an oven).
【００２６】上記加熱工程の加熱により、熱収縮チュー
ブ３は収縮し、その収縮力で積層体２の表面を均等に加
圧する。この時、熱収縮チューブ３の幅Ｌ２は積層体２
の幅Ｌ１より広い又は略同一（図１参照）なので、熱収
縮チューブ３の形状が積層体２の表面に転写されること
がなく、平滑な表面とすることができる。By the heating in the heating step, the heat-shrinkable tube 3 shrinks, and the surface of the laminate 2 is evenly pressed by the shrinking force. At this time, the width L2 of the heat-shrinkable tube 3 is
Is wider than or substantially equal to the width L1 (see FIG. 1), the shape of the heat-shrinkable tube 3 is not transferred to the surface of the laminate 2 and a smooth surface can be obtained.
【００２７】最後に、加圧テープ４及び熱収縮チューブ
３を取り外すとともにマンドレール１を抜き取って、図
１（ｄ）で示すような樹脂製パイプ７を得る。この樹脂
製パイプ７を必要に応じて所望長さに切断することによ
り、例えば人工衛星の構造体のように軽量で高強度・高
弾性率が要求される部位に用いられるパイプとすること
ができる。Finally, the pressure tape 4 and the heat-shrinkable tube 3 are removed and the mandrel 1 is removed to obtain a resin pipe 7 as shown in FIG. 1 (d). By cutting the resin pipe 7 to a desired length as needed, it can be used as a pipe used for a part requiring light weight, high strength and high elastic modulus, such as a structure of an artificial satellite. .
【００２８】本実施形態においては、加熱工程で、熱収
縮チューブ３が積層体２の表面形状に倣って収縮・圧着
し、熱収縮チューブ３上から加えられる加圧テープ４に
よる加圧を積層体２表面に対し均等化するので、表面状
態が良好な樹脂製パイプを得ることができる。In the present embodiment, in the heating step, the heat-shrinkable tube 3 is contracted and pressed according to the surface shape of the laminate 2, and the pressure is applied by the pressure tape 4 applied from above the heat-shrinkable tube 3 to the laminate. Since the two surfaces are equalized, a resin pipe having a good surface condition can be obtained.
【００２９】以上で、本実施形態による樹脂製パイプの
製造方法について説明したが、本発明はこれに限定され
ず、例えば熱収縮チューブによる加圧が十分得られれ
ば、加圧テープ巻着工程又は真空バッグ作業を省略して
もよい。この場合においても、加熱工程で熱収縮チュー
ブ３から積層体２表面に加圧することができるので、別
途力学的加圧作業（例えば、加圧テープ巻着作業等）を
行う場合に比べ、作業性を向上させることができる。Although the method of manufacturing the resin pipe according to the present embodiment has been described above, the present invention is not limited to this. For example, if sufficient pressure can be obtained by a heat-shrinkable tube, a pressing tape winding step or The vacuum bag operation may be omitted. Also in this case, since the pressure can be applied from the heat-shrinkable tube 3 to the surface of the laminate 2 in the heating step, the workability is higher than when a separate mechanical pressing operation (for example, a pressing tape winding operation) is performed. Can be improved.
【００３０】また、本実施形態では繊維強化樹脂を積層
させたパイプについて説明したが、シート状の繊維を含
まない樹脂を積層させて加熱成形したものとしてもよ
く、例えばポリエチレン、ポリプロピレン、テフロン等
のフッ素系の樹脂、シリコン等のシート状のものを用い
てもよい。また、これらの積層方法についても種々の方
法により行い得る。Further, in this embodiment, the pipe in which the fiber reinforced resin is laminated has been described. However, the pipe may be formed by laminating a resin containing no sheet fiber and heat-molding the resin, for example, polyethylene, polypropylene, Teflon or the like. A sheet-like material such as a fluorine-based resin or silicon may be used. In addition, these lamination methods can be performed by various methods.
【００３１】尚、加圧テープ巻着工程を経ない樹脂製パ
イプについて考察すると、図３に示すように、その表面
にうねり（同図中ｔ３で示す誤差）を生じる場合がある
が、従来生じていた所定ピッチの凹凸（図４参照）を有
する表面に比べると、外観の見栄えについては向上して
いる。When considering a resin pipe that has not been subjected to the pressure tape winding step, as shown in FIG. 3, there is a case where a swell (error indicated by t3 in FIG. 3 ) occurs on the surface of the pipe. The appearance is improved as compared to the surface having the irregularities of the predetermined pitch (see FIG. 4).
【００３２】[0032]
【発明の効果】本発明によれば、樹脂製パイプの外側表
面を平滑化するとともに、製造過程における作業性を向
上させることができる。また、チューブ被覆工程により
被覆された熱収縮チューブにより、加熱工程において加
熱と物理的加圧とが同時に行えるので、製造工程を削減
することができる。According to the present invention, the outer surface of the resin pipe can be smoothed and the workability in the manufacturing process can be improved. Further, the heating and the physical pressing can be performed simultaneously in the heating step by the heat-shrinkable tube coated in the tube coating step, so that the number of manufacturing steps can be reduced.
【図１】（ａ）本発明に係る樹脂製パイプの成形方法に
おける積層工程を示す模式図、（ｂ）本発明に係る樹脂
製パイプの成形方法におけるチューブ被覆工程を示す模
式図、（ｃ）本発明に係る樹脂製パイプの成形方法にお
ける加圧工程巻着工程を示す模式図、（ｄ）本発明に係
る樹脂製パイプの成形方法によって得られた樹脂製パイ
プを示す模式図FIG. 1 (a) is a schematic view showing a laminating step in a method for forming a resin pipe according to the present invention, (b) a schematic view showing a tube covering step in a method for forming a resin pipe according to the present invention, and (c). FIG. 2 is a schematic view illustrating a pressing step and a winding step in the method for forming a resin pipe according to the present invention, and FIG. 3D is a schematic view illustrating a resin pipe obtained by the method for forming a resin pipe according to the present invention.
【図２】本発明に係る樹脂製パイプの成形方法において
真空バッグを施す工程を示す模式図FIG. 2 is a schematic view showing a step of applying a vacuum bag in the method of molding a resin pipe according to the present invention.
【図３】本発明に係る樹脂製パイプの成形方法において
加圧テープ巻着工程を経ないで成形された樹脂製パイプ
の表面状態を示す拡大模式図FIG. 3 is an enlarged schematic view showing a surface state of a resin pipe formed without a pressure tape winding step in the method of forming a resin pipe according to the present invention.
【図４】従来の樹脂製パイプの表面状態を示す拡大断面
図FIG. 4 is an enlarged sectional view showing a surface state of a conventional resin pipe.
１…マンドレール ２…積層体 ３…熱収縮チューブ ４…加圧テープ ５…ナイロン製バッグ ５ａ…空気抜き孔 ６…ホース ７…樹脂製パイプ ｔ０…マンドレールの径 ｔ１…積層体の肉厚 ｔ２…熱収縮チューブの肉厚 ｔ３…樹脂製パイプの表面誤差 Ｌ１…積層体の幅 Ｌ２…熱収縮チューブの幅1 ... command rail 2 ... thickness of the laminate 3 ... heat-shrinkable tube 4 ... pressure tape 5 ... nylon bag 5a ... vent 6 ... hose 7 ... diameter t 1 ... laminate of the resin pipe t 0 ... command rail t 2 ... width L2 ... width of the heat shrinkable tube wall thickness t 3 ... surface errors L1 ... laminate of the resin pipe of the heat shrinkable tube
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F211 AA03 AA15 AA39 AC03 AD02 AD05 AD08 AD16 AD19 AG03 AG08 SA04 SA11 SC01 SD01 SD04 SG07 SJ01 SJ23 SP21 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F211 AA03 AA15 AA39 AC03 AD02 AD05 AD08 AD16 AD19 AG03 AG08 SA04 SA11 SC01 SD01 SD04 SG07 SJ01 SJ23 SP21
Claims (5)
積層体を得る積層工程と、 該積層工程で得られた積層体外側に、当該積層体より広
い幅又は略同一幅の熱収縮チューブを被覆させるチュー
ブ被覆工程と、 前記熱収縮チューブにより被覆された状態で前記積層体
を加熱し、前記熱収縮チューブを収縮させる加熱工程
と、を含んだ製造工程を経て成形された樹脂製パイプ。1. A laminating step of winding a sheet-like resin around a mandrel to obtain a laminated body, and a heat shrink having a width wider than or substantially equal to that of the laminated body outside the laminated body obtained in the laminating step. A resin pipe formed through a manufacturing process including a tube coating step of coating a tube, and a heating step of heating the laminate in a state of being covered with the heat shrinkable tube and shrinking the heat shrinkable tube. .
積層させる積層工程と、 該積層工程で得られた積層体外側に、当該積層体より広
い幅又は略同一幅の熱収縮チューブを被覆させるチュー
ブ被覆工程と、 前記熱収縮チューブにより被覆された状態で前記積層体
を加熱し、前記熱収縮チューブを収縮させる加熱工程
と、を含むことを特徴とする樹脂製パイプの成形方法。2. A laminating step of winding and laminating a sheet-like resin around a mandrail, and a heat-shrinkable tube having a width wider than or substantially equal to that of the laminated body is provided outside the laminated body obtained in the laminating step. A method of forming a resin pipe, comprising: a tube coating step of coating; and a heating step of heating the laminate in a state of being covered with the heat shrinkable tube to shrink the heat shrinkable tube.
含浸された繊維強化樹脂であることを特徴とする請求項
２記載の樹脂製パイプの成形方法。3. The method according to claim 2, wherein the resin forming the laminate is a fiber reinforced resin impregnated with reinforcing fibers.
に、前記熱収縮チューブ上に所定幅の加圧テープを巻着
させる加圧テープ巻着工程を有することを特徴とする請
求項２又は請求項３記載の樹脂製パイプの成形方法。4. A pressure tape winding step of winding a pressure tape having a predetermined width on the heat-shrinkable tube between the tube coating step and the heating step. A method for molding a resin pipe according to claim 3.
巻着された積層体を真空バッグすることを特徴とする請
求項２〜請求項４のいずれか１つに記載の樹脂製パイプ
の成形方法。5. The resin pipe according to claim 2, wherein the laminate wound around the mandrel is vacuum bagged before the heating step. Molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34037199A JP2001150547A (en) | 1999-11-30 | 1999-11-30 | Resin pipe and method for molding this resin pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34037199A JP2001150547A (en) | 1999-11-30 | 1999-11-30 | Resin pipe and method for molding this resin pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001150547A true JP2001150547A (en) | 2001-06-05 |
Family
ID=18336314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34037199A Pending JP2001150547A (en) | 1999-11-30 | 1999-11-30 | Resin pipe and method for molding this resin pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001150547A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100711596B1 (en) | 2006-02-22 | 2007-04-27 | (주) 한국절연물산 | Method for preparing insulating pipe coated with epoxy and insulating pipe using the method |
| JP2008212563A (en) * | 2007-03-07 | 2008-09-18 | Fujinon Corp | Method of working end part of tube for medical device |
| KR101059187B1 (en) * | 2008-11-10 | 2011-08-25 | 박승주 | Shaft of roller brush for display glass cleaning |
| JP2014192509A (en) * | 2013-03-28 | 2014-10-06 | Samsung Techwin Co Ltd | Component mounting machine |
| KR20180053997A (en) * | 2016-11-14 | 2018-05-24 | 국방과학연구소 | Manufacturing method for anisogrid composite structure without outer cover |
-
1999
- 1999-11-30 JP JP34037199A patent/JP2001150547A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100711596B1 (en) | 2006-02-22 | 2007-04-27 | (주) 한국절연물산 | Method for preparing insulating pipe coated with epoxy and insulating pipe using the method |
| JP2008212563A (en) * | 2007-03-07 | 2008-09-18 | Fujinon Corp | Method of working end part of tube for medical device |
| KR101059187B1 (en) * | 2008-11-10 | 2011-08-25 | 박승주 | Shaft of roller brush for display glass cleaning |
| JP2014192509A (en) * | 2013-03-28 | 2014-10-06 | Samsung Techwin Co Ltd | Component mounting machine |
| KR20180053997A (en) * | 2016-11-14 | 2018-05-24 | 국방과학연구소 | Manufacturing method for anisogrid composite structure without outer cover |
| KR101872737B1 (en) * | 2016-11-14 | 2018-06-29 | 국방과학연구소 | Manufacturing method for anisogrid composite structure without outer cover |
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