JPS62119027A - Continuous forming of reinforced plastic pipe - Google Patents
Continuous forming of reinforced plastic pipeInfo
- Publication number
- JPS62119027A JPS62119027A JP60258769A JP25876985A JPS62119027A JP S62119027 A JPS62119027 A JP S62119027A JP 60258769 A JP60258769 A JP 60258769A JP 25876985 A JP25876985 A JP 25876985A JP S62119027 A JPS62119027 A JP S62119027A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- prepreg
- reinforced plastic
- rollers
- plastic 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.)
- Granted
Links
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、強化繊維に熱硬化性樹脂を予め含浸したプ
リプレグを芯金に積層し、これをホットダイを通して連
続的に引抜いて成形する強化プラスチックパイプの連続
成形方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention is a reinforced plastic that is formed by laminating a prepreg in which reinforcing fibers are pre-impregnated with a thermosetting resin on a core metal, and continuously drawing the prepreg through a hot die. This invention relates to a continuous pipe forming method.
強化プラスチックパイプの成形においては、従来１強化
繊維を熱硬化性樹脂槽を通して樹脂を含浸しつつ行う場
合と、熱硬化性樹脂を予め含浸させたプリプレグを用い
る場合がある。前者の方法が連続成形方法として一般的
であるが、高度の薄肉化と成形精度を向上させるため、
また、炭素繊維強化プラスチックでは、炭素繊維単体で
は折れやすいという作業性上の問題点などにより、プリ
プレグを用いる後者の方法が最近多用されている。Conventionally, when molding a reinforced plastic pipe, reinforcing fibers are passed through a thermosetting resin bath and impregnated with resin, and sometimes a prepreg pre-impregnated with a thermosetting resin is used. The former method is common as a continuous molding method, but in order to achieve a high degree of thinning and improve molding accuracy,
Furthermore, in the case of carbon fiber reinforced plastics, the latter method using prepreg has recently been frequently used due to problems in workability such as the fact that carbon fiber alone is easily broken.
第２図は従来のプリプレグ積層法を示す正面図である。FIG. 2 is a front view showing a conventional prepreg lamination method.
図において、（１）は芯金、（２）はシート状プリプレ
グである。従来プリプレグを用いた繊維強化プラスチツ
クパイプの成形方法においては、第１図に示すように、
芯金（１）にシート状プリプレグ（２）を巻きつけた後
、ホットダイで引抜き硬化するか、熱収縮テープを巻き
つけて加熱硬化するかによってパイプを製造していた。In the figure, (1) is a core metal, and (2) is a sheet-like prepreg. In the conventional method for forming fiber-reinforced plastic pipes using prepreg, as shown in Figure 1,
Pipes were manufactured by wrapping a sheet prepreg (2) around a core metal (1) and then hardening it by drawing it out with a hot die, or by wrapping it with a heat shrink tape and hardening it by heating.
しかし、第１図に示すようなシート状プリプレグの積層
法では、本質的にバッチ方式になり、連続成形すること
ができないという問題点があった。However, the method of laminating sheet prepregs as shown in FIG. 1 has a problem in that it is essentially a batch method and cannot be continuously molded.
この発明は上記のような問題点を解決するためになされ
たもので、プリプレグ材料を用いて、高度の成形精度を
持った繊維強化プラスチツクパイプを連続的に製造する
ことが可能な強化プラスチックパイプの連続成形方法を
提供することを目的とする。This invention was made to solve the above-mentioned problems, and it is a reinforced plastic pipe that can continuously manufacture fiber-reinforced plastic pipes with a high degree of molding accuracy using prepreg materials. The purpose is to provide a continuous molding method.
この発明に係わる連続成形方法は、テープ状プリプレグ
をローラを介して芯金の外周面に縦に導いた後、凹状の
ローラを用いて圧着積層し、次いでこれをホットダイを
通して連続的に引抜いて成形するようにしたものである
。The continuous molding method according to the present invention involves guiding the tape-shaped prepreg vertically to the outer circumferential surface of the core metal through rollers, pressing and laminating the prepreg using concave rollers, and then continuously drawing it out through a hot die to form it. It was designed to do so.
この発明における成形方法においては、テープ状プリプ
レグを用いることにより連続成形を可能にしたものであ
る。本質的に伸びがほとんどなく、かつ芯金上にしわや
強化繊維の乱れなしには縦方向に積層するのが困難なテ
ープ状プリプレグをドラム状または凸状のローラを廻し
て芯金の外周面上に軸方向に縦に導いた後、凹状のロー
ラで圧着積層すると、高精度の積層が可能となり、次い
で引抜き硬化することにより高精度の繊維強化プラスチ
ツクパイプが連続成形される。In the molding method according to the present invention, continuous molding is made possible by using a tape-shaped prepreg. Tape-shaped prepreg, which essentially has almost no elongation and is difficult to stack vertically on the core without wrinkles or disordering of the reinforcing fibers, is rolled around a drum-shaped or convex roller to coat the outer circumferential surface of the core. After being guided vertically in the axial direction, high-precision lamination is possible by pressing and laminating with a concave roller, and then by drawing and curing, a high-precision fiber-reinforced plastic pipe is continuously formed.
以下、この発明の一実施例を図について説明する。第１
図はこの発明の一実施例を示す斜視図であり、図におい
て、（３）は芯金、（４）はテープ状プリプレグ、（５
）はこのテープ状プリプレグ（４）を収納する収納リー
ル、（６）はテープ状プリプレグ（４）を芯金（３）の
外周面上に軸方向に導くドラム状ローラ、（７）、（８
）はテープ状プリプレグ（４）を芯金（３）に圧着積層
するための凹状ローラである。第１図において、ドラム
状ローラ（６）の面と芯金（３）の外周面のすき間は、
芯金（３）の直径の１７５以下となるように構成されて
いる。また、凹状ローラ（７） 、 （８）の曲面の直
径は芯金（３）の直径プラス積層するテープ状プリプレ
グ（４）の厚さ程度である。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a perspective view showing one embodiment of the present invention. In the figure, (3) is a core bar, (4) is a tape-shaped prepreg, and (5) is a
) is a storage reel that stores this tape-like prepreg (4), (6) is a drum-like roller that guides the tape-like prepreg (4) onto the outer peripheral surface of the core metal (3) in the axial direction, (7), (8)
) is a concave roller for pressure-bonding and laminating the tape-like prepreg (4) onto the core bar (3). In Fig. 1, the gap between the surface of the drum-shaped roller (6) and the outer peripheral surface of the core metal (3) is
The diameter of the core bar (3) is 175 mm or less. Further, the diameter of the curved surfaces of the concave rollers (7) and (8) is about the diameter of the core metal (3) plus the thickness of the tape-shaped prepreg (4) to be laminated.
一方、凹状ローラ（７）、（８）の曲面の幅はテープ状
プリプレグ（４）のテープ幅より大きく設定されている
。そして分割された芯金（３）の外周面にテープ状プリ
プレグ（４）を圧着積層するための凹状ローラ（７）
、 （８）は、上下位置の凹状ローラ（７）と左右位置
の凹状ローラ（８）とで取付位置がずらされている。こ
こで、凹状ローラ（７）と凹状ローラ（８）の相対距離
は特に限定されない。一方、ドラム状ローラ（６）と凹
状ローラ（７）の間の距離は、テープ状プリプレグ（４
）を芯金（３）上に、しわなどがなく高精度に積層する
ために、芯金（３）の直径の４倍以上あるように設定さ
れている。On the other hand, the width of the curved surfaces of the concave rollers (7) and (8) is set larger than the tape width of the tape-shaped prepreg (4). Then, a concave roller (7) is used to press and laminate the tape-like prepreg (4) on the outer peripheral surface of the divided core bar (3).
, (8), the mounting positions of the concave rollers (7) at the top and bottom positions and the concave rollers (8) at the left and right positions are shifted. Here, the relative distance between the concave roller (7) and the concave roller (8) is not particularly limited. On the other hand, the distance between the drum-shaped roller (6) and the concave roller (7) is the same as that of the tape-shaped prepreg (4).
) on the core metal (3) with high precision without wrinkles, etc., the diameter is set to be at least four times the diameter of the core metal (3).
本発明の連続成形方法においては、第１図に示すような
積層装置は芯金（３）に沿って、積層が必要なプリプレ
グのプライ数だけ並べて使用する。In the continuous molding method of the present invention, a laminating apparatus as shown in FIG. 1 is used in parallel with the number of prepreg plies that need to be laminated along the core bar (3).
すなわち、第１図に示すような積層装置を芯金（３）に
沿って配置し、また、必要に応じて各積層装置の取付は
角度を順に変えて（例えば、１番目は第１図に示すよう
に、上下左右からプリプレグを積層する角度で、２番目
はプリプレグの継目の上から積層する角度でなど）設置
し、芯金（３）上に必要なプライ数のテープ状プリプレ
グ（４）を積層し、これをホットダイを通して連続的に
引抜いて成形する。That is, the laminating devices shown in Figure 1 are arranged along the core bar (3), and if necessary, each laminating device is installed at different angles (for example, the first one is installed as shown in Figure 1). As shown, the prepregs are stacked from the top, bottom, left and right, the second one is stacked from above the joint of the prepreg, etc.), and the required number of plies of tape prepreg (4) are placed on the core bar (3). are laminated and then continuously drawn through a hot die to form the material.
成形方法はまず、収納リール（５）よりテープ状プリプ
レグ（４）をドラム状ローラ（６）を廻して芯金（３）
の外周面上に軸方向に縦に導き、次いで凹状ローラ（７
） 、 （８）を用いて圧着積層し、テープ状プリプレ
グ（４）の先端を芯金（３）に固定する。この後、駆動
装置（図示せず）を用いて、テープ状プリプレグ（４）
を積層した芯金（３）を矢印方向に移動させながら、同
様の操作を行い、所定数のテープ状プリプレグ（４）を
芯金（３）上に積層し、最終的にホットダイを通して連
続的に引抜いて成形する。The forming method is as follows: First, the tape-like prepreg (4) is passed from the storage reel (5) through the drum-like roller (6) to form the core metal (3).
The concave roller (7
), (8) are used to press and laminate and fix the tip of the tape-like prepreg (4) to the core bar (3). After that, using a drive device (not shown), the tape-shaped prepreg (4) is
While moving the laminated core bar (3) in the direction of the arrow, perform the same operation to stack a predetermined number of tape-shaped prepregs (4) on the core bar (3), and finally pass through the hot die and continuously Pull it out and shape it.
上記操作において、収納リール（５）からテープ状プリ
プレグ（４）を繰り出し、芯金（３）（通常、丸棒また
はパイプ）上に積層する場合、しわなどを生じさせず、
また高精度に積層するためには、繰り出しから積層まで
テープ状プリプレグ（４）をいかに導くかは重要な問題
である。テープ状プリプレグ（４）は縦方向に強化繊維
を含有するため、本質的に縦方向の伸びはほとんどない
。また、テープ状プリプレグ（４）は収納リール（５）
から平面の状態で繰り出し、曲面を持つ芯金（３）上に
積層する場合、テープ状プリプレグ（４）の幅方向の中
央と端において、その行程差が生じる。このため、テー
プ状プリプレグ（４）を収納リール（５）から繰り出し
、曲面を持った芯金（３）上に積層して行く場合、しわ
や強化繊維の乱れなどが生じ、高精度な積層ができない
が、本発明においては、収納リール（５）から繰り出し
たテープ状プリプレグ（４）を凹状ローラ（７）、（８
）で圧着積層する前に、凹状ローラ（７）および芯金（
３）から一定距離に設置したドラム状ローラ（６）を廻
して芯金（３）の外周面上に縦に導くことにより、行程
差を小さくし、しわや強化繊維の乱れなどの発生をなく
すことができる。In the above operation, when the tape-shaped prepreg (4) is fed out from the storage reel (5) and laminated on the core metal (3) (usually a round bar or pipe), wrinkles etc. do not occur.
Furthermore, in order to perform lamination with high precision, it is an important issue how to guide the tape-shaped prepreg (4) from feeding to lamination. Since the tape-shaped prepreg (4) contains reinforcing fibers in the longitudinal direction, essentially there is almost no elongation in the longitudinal direction. In addition, the tape-like prepreg (4) is stored on a storage reel (5).
When the tape-shaped prepreg (4) is fed out in a flat state and laminated onto a core metal (3) having a curved surface, a difference in stroke occurs between the widthwise center and the ends of the tape-shaped prepreg (4). For this reason, when the tape-shaped prepreg (4) is fed out from the storage reel (5) and laminated onto the curved core metal (3), wrinkles and disordered reinforcing fibers occur, making it difficult to layer with high precision. However, in the present invention, the tape-like prepreg (4) fed out from the storage reel (5) is transferred to the concave rollers (7) and (8).
) before pressing and laminating the concave roller (7) and core bar (
By rotating a drum-shaped roller (6) installed at a certain distance from 3) and guiding it vertically onto the outer peripheral surface of the core metal (3), the difference in stroke is reduced and the occurrence of wrinkles and disorder of reinforcing fibers is eliminated. be able to.
なお上記実施例では、テープ状プリプレグ（４）を芯金
（３）上に導く手段としてドラム状ローラ（６）を使用
したが、凸状のローラを用いることによっても、ドラム
状ローラ以上に行程差を小さくできる効果を示す。また
、上記実施例では、テープ状プリプレグ（４）を芯金（
３）上に縦に積層する場合のみを示したが、これら縦方
向の積層方法と、同様のプリプレグテープを周方向に巻
きつける積層方法とを組合せて積層した後、引抜き硬化
する連続成形方法も可能である。In the above embodiment, the drum-shaped roller (6) was used as a means for guiding the tape-shaped prepreg (4) onto the core metal (3), but by using a convex roller, the distance can be increased even more than the drum-shaped roller. This shows the effect of reducing the difference. In addition, in the above embodiment, the tape-shaped prepreg (4) is attached to the core metal (
3) Only the case of vertically laminating on top is shown, but there is also a continuous molding method in which these vertical laminating methods are combined with a laminating method in which similar prepreg tape is wrapped in the circumferential direction, and then the material is laminated and then pultruded and cured. It is possible.
以上のようにこの発明によれば、テープ状プリプレグを
ローラを介して芯金の外周面上に軸方向に縦に導いた後
、凹状のローラ用いて圧着積層し。As described above, according to the present invention, the tape-shaped prepreg is guided vertically in the axial direction onto the outer circumferential surface of the core metal via the rollers, and then the tape-like prepregs are laminated by pressure using the concave rollers.
次いでこれをホットダイを通して連続的に引抜くことに
より、成形精度の高い強化プラスチックパイプを連続的
にかつ効率的に成形することができる。Next, by continuously drawing this through a hot die, a reinforced plastic pipe with high molding precision can be continuously and efficiently molded.
第１図は本発明の一実施例を示す斜視図、第２図は従来
のプリプレグ積層法を示す正面図である。
図において、（１） 、 （３）は芯金、（４）はテー
プ状プリプレグ、（５）は収納リール、（６）はドラム
状ローラ、（７）、（８）は凹状ローラである。FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a front view showing a conventional prepreg lamination method. In the figure, (1) and (3) are core metals, (4) is a tape-shaped prepreg, (5) is a storage reel, (6) is a drum-shaped roller, and (7) and (8) are concave rollers.
Claims (3)
グを芯金に積層し、これをホットダイを通して連続的に
引抜いて成形する連続成形方法において、テープ状プリ
プレグをローラを介して芯金の外周面上に軸方向に導い
た後、凹状のローラを用いて圧着積層することを特徴と
する強化プラスチックパイプの連続成形方法。(1) In a continuous molding method in which prepreg in which reinforcing fibers are pre-impregnated with a thermosetting resin is laminated on a core metal, and this is continuously drawn through a hot die to form the material, the tape-shaped prepreg is passed through a roller around the outer circumference of the core metal. A continuous molding method for reinforced plastic pipes, which is characterized by axially guiding the pipes onto a surface and then pressing and laminating them using concave rollers.
ラがドラム状または凸状のローラであることを特徴とす
る特許請求の範囲第１項記載の強化プラスチックパイプ
の連続成形方法。(2) The method for continuously molding a reinforced plastic pipe according to claim 1, wherein the roller that guides the tape-shaped prepreg onto the outer peripheral surface of the core metal is a drum-shaped or convex roller.
れた２対のローラからなることを特徴とする特許請求の
範囲第１項または第２項記載の強化プラスチックパイプ
の連続成形方法。(3) The method for continuously molding a reinforced plastic pipe according to claim 1 or 2, characterized in that the concave rollers consist of two pairs of rollers arranged at right angles to each other with their positions shifted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60258769A JPS62119027A (en) | 1985-11-20 | 1985-11-20 | Continuous forming of reinforced plastic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60258769A JPS62119027A (en) | 1985-11-20 | 1985-11-20 | Continuous forming of reinforced plastic pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62119027A true JPS62119027A (en) | 1987-05-30 |
| JPH0312540B2 JPH0312540B2 (en) | 1991-02-20 |
Family
ID=17324828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60258769A Granted JPS62119027A (en) | 1985-11-20 | 1985-11-20 | Continuous forming of reinforced plastic pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62119027A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017685A (en) * | 2001-08-21 | 2003-03-04 | 박형진 | Apparatus for manufacturing drain hose of air conditioner |
| JP2007501140A (en) * | 2003-08-01 | 2007-01-25 | アライアント・テクシステムズ・インコーポレーテッド | Apparatus and method for forming composite reinforcement and reinforcement structure |
| US8282757B2 (en) | 2009-11-10 | 2012-10-09 | Alliant Techsystems Inc. | Automated composite annular structure forming |
| US9662841B2 (en) | 2009-11-10 | 2017-05-30 | Orbital Atk, Inc. | Radially extending composite structures |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4869870A (en) * | 1971-12-25 | 1973-09-21 | ||
| JPS5120278A (en) * | 1974-08-10 | 1976-02-18 | Satsuki Kitani | |
| JPS5521286A (en) * | 1978-08-03 | 1980-02-15 | Sekisui Chem Co Ltd | Manufacturing method of shape tube |
| JPS56143865A (en) * | 1980-03-12 | 1981-11-09 | Messerschmitt Boelkow Blohm | Piston and its manufacture |
-
1985
- 1985-11-20 JP JP60258769A patent/JPS62119027A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4869870A (en) * | 1971-12-25 | 1973-09-21 | ||
| JPS5120278A (en) * | 1974-08-10 | 1976-02-18 | Satsuki Kitani | |
| JPS5521286A (en) * | 1978-08-03 | 1980-02-15 | Sekisui Chem Co Ltd | Manufacturing method of shape tube |
| JPS56143865A (en) * | 1980-03-12 | 1981-11-09 | Messerschmitt Boelkow Blohm | Piston and its manufacture |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017685A (en) * | 2001-08-21 | 2003-03-04 | 박형진 | Apparatus for manufacturing drain hose of air conditioner |
| JP2007501140A (en) * | 2003-08-01 | 2007-01-25 | アライアント・テクシステムズ・インコーポレーテッド | Apparatus and method for forming composite reinforcement and reinforcement structure |
| US7767128B2 (en) | 2003-08-01 | 2010-08-03 | Alliant Techsystems Inc. | Apparatus and methods for forming composite stiffeners and reinforcing structures |
| US7820092B2 (en) | 2003-08-01 | 2010-10-26 | Alliant Techsystems Inc. | Apparatus and methods for forming composite stiffeners and reinforcing structures |
| US7819651B2 (en) | 2003-08-01 | 2010-10-26 | Alliant Techsystems Inc. | Apparatus and methods for forming composite stiffeners and reinforcing structures |
| US8226787B2 (en) | 2003-08-01 | 2012-07-24 | Alliant Techsystems Inc. | Methods for forming composite stiffeners and reinforcing structures |
| US8366981B2 (en) | 2003-08-01 | 2013-02-05 | Alliant Techsystems Inc. | Apparatus and methods for forming composite stiffeners and reinforcing structures |
| US10525641B2 (en) | 2003-08-01 | 2020-01-07 | Northrop Grumman Innovation Systems, Inc. | Composite structures, forming apparatuses and related systems and methods |
| US10525640B2 (en) | 2003-08-01 | 2020-01-07 | Northrop Grumman Innovation Systems, Inc. | Composite structures including an elongated member exhibiting a curved shape |
| US8282757B2 (en) | 2009-11-10 | 2012-10-09 | Alliant Techsystems Inc. | Automated composite annular structure forming |
| US9662841B2 (en) | 2009-11-10 | 2017-05-30 | Orbital Atk, Inc. | Radially extending composite structures |
| US10668672B2 (en) | 2009-11-10 | 2020-06-02 | Northrop Grumman Innovation Systems, Inc. | Radially extending composite structures |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0312540B2 (en) | 1991-02-20 |
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