JPS63264329A - Manufacture of flexible composite pipe - Google Patents
Manufacture of flexible composite pipeInfo
- Publication number
- JPS63264329A JPS63264329A JP9837187A JP9837187A JPS63264329A JP S63264329 A JPS63264329 A JP S63264329A JP 9837187 A JP9837187 A JP 9837187A JP 9837187 A JP9837187 A JP 9837187A JP S63264329 A JPS63264329 A JP S63264329A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- spiral
- state
- manufacturing
- flexible composite
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 73
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000805 composite resin Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、排水管、電線保護管、電話線保護管など地
中に敷設して使用されるもので、樹脂製管壁内に金属薄
板製の補強用帯板を埋設することにより比較的９″４雀
で、ｉｑｔ／ｘ性をｆｆＬながら優れた耐圧強度を発揮
する可撓性複合管の製造方法に関するものである。Detailed Description of the Invention (Field of Industrial Application) This invention is used for drain pipes, electric wire protection pipes, telephone line protection pipes, etc. that are laid underground. The present invention relates to a method for manufacturing a flexible composite pipe that is relatively 9 inches long and exhibits excellent pressure resistance while having iqt/x properties of ffL by embedding reinforcing strips made of steel.
（従来の技術）
この種の複合樹脂管として従来から知られているものに
、例えば実開昭６１−１４１８８９′Ｉじ・公報で開示
されたものがある。同公報には種々の管壁断面形状のも
のが示されているが、公約数としての断面形状を示すと
第１７図のような断面構造を有する。同図において、（
０１）は螺旋波形状に形成された樹脂製管壁、（０２）
は断面コ字形でその間放向端部に突出縁（０２ａＨＯ２
ａ）を有するステンレス鋼板など金属薄板製の補強用帯
板であって、この帯板（０２）をＦ向きに開放する状態
で上記管壁（０１）の各山頂部（Ｏｌａ）と、それに連
なる両側壁部（Ｏｌｂ）（Ｏｌｂ）とにｌ−Ｊ’、って
それぞれ埋設することにより、管軸線方向で相隣る補強
用帯板（０２）（０２）の突出縁（０２ａ ）（０２ａ
）間で、管壁（旧）の各谷部（Ｏｌｅ）に補強用帯板
（０２）（０２）が存在しない切れ目部分（Ａ）を形成
すべくしていた。(Prior Art) One of the conventionally known composite resin pipes of this type is disclosed in, for example, Japanese Utility Model Application Publication No. 141889/1989. This publication discloses tube walls with various cross-sectional shapes, but when the cross-sectional shapes are shown as common divisors, they have a cross-sectional structure as shown in FIG. 17. In the same figure, (
01) is a resin pipe wall formed in a spiral wave shape, (02)
has a U-shaped cross section and a protruding edge (02aHO2) at the radiating end.
a), which is a reinforcing strip made of a thin metal plate such as a stainless steel plate, and in a state in which this strip (02) is opened in the F direction, each crest (Ola) of the tube wall (01) and the reinforcing strip (02) connected thereto By burying l-J' in both side walls (Olb), the protruding edges (02a) (02a) of the reinforcing strips (02) (02) adjacent to each other in the tube axis direction
), cut portions (A) where reinforcing strips (02) (02) were not present were to be formed in each valley (Ole) of the pipe wall (old).
（発明が解決しようとする問題点）
以上のように構成された従来のＩｊＪ 画性複合管は、
この種の地中敷設管として多用されていたコンクリート
製のヒユーム管や鋳鉄管に比べて、軽駐であるとともに
可撓性に優れ、運搬や敷設作業が容易であり、また耐圧
強度もヒユーム管と比べて遜色のないものに構成できる
利点を有するものの、次の点で問題があった。(Problems to be Solved by the Invention) The conventional IJJ composite tube configured as described above is
Compared to concrete hume pipes and cast iron pipes that were often used as underground pipes of this kind, hume pipes are lighter in construction, have superior flexibility, are easier to transport and install, and have superior pressure resistance. Although it has the advantage of being able to be constructed on a par with the previous model, it has the following problems.
つまり、耐圧強度は補強用帯板（０２）の側板部分（０
２ｂ）の高さと厚味が大きいほど増大する。しかしなが
ら、側板部分（０２ｂ）の厚味を大きくするには補強用
帯板（０２）全体の厚味を均一に大きくしなければなら
ないため、この補強用帯板（０２）の柔軟性が比例的に
小さくなる。また、厚い補強用帯板を用いるとなると、
重」目的に重くなるとともに、圧延の装置も大掛かりに
なりやすくて製造面で不利な結果を招く。In other words, the pressure strength is the side plate portion (0
2b) increases as the height and thickness increase. However, in order to increase the thickness of the side plate portion (02b), the thickness of the entire reinforcing strip (02) must be increased uniformly, so the flexibility of this reinforcing strip (02) is proportional to the thickness of the reinforcing strip (02). becomes smaller. Also, when using thick reinforcing strips,
In addition to the heavy weight, the rolling equipment tends to be large-scale, which leads to disadvantageous results in terms of manufacturing.
そこで、上述したように管壁（旧）の各谷部（Ｏｌｅ）
の一部に補強の切れ目部分（Ａ）を設けて、可撓性を保
持させていたのであるが、このように管壁の谷部に補強
の切れ［１部分（Ａ）が存在すると、Ｍ曲吠態で地中埋
設した場合、」二記切れ「１部分（ＩＡ）に応力集中が
生じ、割れやクラックを発生し易い。また、道路の掘削
や埋設管の掘り返しなどの際に、つるはしや掘削刃先端
などの衝突によって１１記切れ［１部分を破孔してしま
う恐れがあった。Therefore, as mentioned above, each valley (Ole) of the pipe wall (old)
A reinforcing cut (A) was provided in a part of the pipe wall to maintain flexibility. If it is buried underground in a curved position, stress concentration will occur in the 1 part (IA) and cracks will easily occur. There was a risk that 11 holes would be broken due to collisions with the tip of the excavator or the tip of the drilling blade.
この発明は上記実情に鑑みてなされたもので、従来と同
筒の耐圧強度のもとてｖＨＡ性を向」二できるとともに
、クラックの発生モ掘削時等における破孔を確実に防出
でき、かつ製造も容易な可＋４性複合管の製造方法を提
供することをｌ］的とする。This invention was made in view of the above-mentioned circumstances, and it is possible to improve the VHA property with the same pressure resistance as the conventional cylinder, and also to reliably prevent the occurrence of cracks and holes during excavation, etc. It is an object of the present invention to provide a method for manufacturing a flexible composite tube that is also easy to manufacture.
（問題点を解決するための手段）
この発明に係る１ｒＨＡ性複合管の装造方法は、断面略
Ｕ字形とした２枚の補強用帯板を、その開放部が互いに
逆向きでかつ交げに配置されるよう螺旋状に巻回するこ
とにより螺旋補強条を作製する第１工程と、この螺旋補
強条の軸心延長線。Ｌにおいて上記２枚の補強用帯板の
側板部分どうしが重合するようにピッチを整えつつ螺旋
方向に移送しながら、この螺旋補強条の内周面および外
周部に樹脂材を被覆することにより螺旋波形状の樹脂製
管壁を作製する第２１−程とからなるものである。(Means for Solving the Problems) A method for assembling a 1rHA composite pipe according to the present invention is to install two reinforcing strip plates each having a substantially U-shaped cross section, with their open portions facing oppositely to each other, and interchanging them. A first step of producing a helical reinforcing strip by winding it in a helical manner so as to be arranged, and an axial extension line of the helical reinforcing strip. At L, while adjusting the pitch so that the side plate portions of the two reinforcing strips overlap each other and transferring in the helical direction, the inner circumferential surface and outer circumferential portion of the helical reinforcing strip are coated with a resin material to form a helical shape. Step 21 of manufacturing a corrugated resin tube wall.
（作用）
この発明によれば、断面略Ｕ字形とした２枚の補強用帯
板を、それらの開放部が逆向き姿勢で、かつ側板部分ど
うしを重合させた姿勢で螺旋状に巻回させて螺旋補強条
となし、このような螺旋補強条の内外周面に人々樹脂材
を被覆することにより、螺旋波形状の樹脂製管壁内に、
この管壁の山頂部と谷部とは−・市で、その両部をつな
ぐ側壁部分においてのみ二重の補強用帯板を埋設したｕ
ｎ性複合管を得ることができる。(Function) According to the present invention, two reinforcing strip plates each having a substantially U-shaped cross section are spirally wound with their open portions facing oppositely and with their side plate portions overlapping each other. By coating the inner and outer circumferential surfaces of such spiral reinforcing strips with resin material, inside the spiral wave-shaped resin pipe wall,
The peak and valley of this pipe wall are... In the city, double reinforcing strips were buried only in the side wall that connects the two parts.
n-type composite tubes can be obtained.
そして、このような複合管は従来と同一厚味の素板を使
用した場合、側壁部分の補強用帯板の厚味が倍になるた
め、耐圧強度が著しく増大し、また、耐圧強度を従来と
同等にする場合、素板の厚味を約２分の１にすることが
できるため、管全体の可撓性が良くなる。In addition, when such composite pipes use blank plates of the same thickness as conventional ones, the thickness of the reinforcing strips on the side walls is doubled, resulting in a significant increase in pressure resistance. In this case, the thickness of the blank plate can be reduced to about half, which improves the flexibility of the entire tube.
さらに、補強用帯板に切れ１１部分がなく、屈曲時にお
ける応力集中や掘削時等における不測の破孔がなく、長
年月にわたり安全使用できる。Furthermore, there are no cuts in the reinforcing strip, and there is no stress concentration during bending or unexpected holes during excavation, so it can be used safely for many years.
（実施例） 以下、この発明の実施例を図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.
第１図乃至第３図は、後記するところの本発明製造方法
によって製造された樹脂−金属複合管の構造を示し、同
図において、（１）は断面台形状の螺旋波形状に形成さ
れた樹脂管壁である。（２）は断面台形状で、ステンレ
ス鋼板などの金属薄板製の第１の補強用帯板、（２’）
は上記第１の補強用帯板（２）よりもｌ・辺寸法ならび
に開放部の幅・１゛法がやや小さい断面台形状で、」１
記と同様ステンレス鋼板などの金属薄板製の第２の補強
用帯板であって、］二記第１の補強用帯板（２）は１−
記管壁（１）の各山珀部（ｌａ）とそれに連なる両側壁
部（ｌｂ）（Ｉｂ）とに亙って、管壁（１）の肉厚内に
ド向き開放姿勢で埋設されているとともに１．Ｌ１記第
２の補強用帯板（２”）は上記管壁（りの各谷部（ＩＣ
）とそれに連なる両側壁部（ｌｂ）（ｌｂ）とに亙って
、管壁（１）の肉厚内に上向き開放姿勢で埋設され、も
って第１の補強用帯板（２）の両側板部分（２ｂ）（２
ｂ）と第２の補強用帯板（２′）の両側板部分（２ｂ
’ ）（２ｂ ’ ）とが管壁（＋）の両側壁部分（Ｉ
ｂ）（ｌｂ）でそれぞれ二重に重合されている。上記両
補強用帯板（２）（２’）は第３図で明示の如く、多数
の小孔（３）・・・が形成されたパンチングメタルを使
用しているが、小孔をもたない甲板であってもよい。Figures 1 to 3 show the structure of a resin-metal composite pipe manufactured by the manufacturing method of the present invention, which will be described later. It is a resin pipe wall. (2) is a first reinforcing strip plate having a trapezoidal cross section and made of a thin metal plate such as a stainless steel plate; (2')
has a trapezoidal cross-section with slightly smaller l/side dimension and open part width/1° than the first reinforcing strip (2), and
The second reinforcing strip (2) is made of a thin metal plate such as a stainless steel plate as described above, and the first reinforcing strip (2) is 1-
It is buried in the wall thickness of the pipe wall (1) in an open position facing toward the wall, covering each crest part (la) of the pipe wall (1) and the side wall parts (lb) (Ib) connected thereto. 1. The second reinforcing strip plate (2”) in L1 is attached to each valley (IC) of the tube wall.
) and both side wall portions (lb) (lb) connected thereto, are buried in the wall thickness of the tube wall (1) in an upwardly open position, and thereby the both side plates of the first reinforcing band plate (2) are Part (2b) (2
b) and both side plate portions (2b) of the second reinforcing strip (2')
' ) (2b ') and both side wall portions (I
b) Each of (lb) is doubly polymerized. As clearly shown in Figure 3, the above-mentioned reinforcing strips (2) and (2') are made of punching metal with many small holes (3)... It may be a deck without.
次に、上記のような構造を有する複合樹脂管の製造方法
を説明する。Next, a method for manufacturing a composite resin pipe having the above structure will be explained.
第４図（ａ）（ｂ）において、（２Ｂ）は最終的に螺旋
補強条（２Ａ）となる金属薄板製の帯材であって、この
ような帯材（２Ｂ）の２つをロール状に巻回した状態か
ら順次繰出して圧延ロール（７） Ｊｒ￥にそれぞれ連
続的に送り込み、に記した第１および第２の補強用帯板
（２Ｎ２’）に圧延成形する。In FIGS. 4(a) and 4(b), (2B) is a strip made of thin metal plate that will eventually become the spiral reinforcing strip (2A), and two such strips (2B) are rolled into a roll. They are sequentially unwound from the wound state and continuously fed into rolling rolls (7) Jr. to form the first and second reinforcing strips (2N2') described in .
に記の圧延ロール（７） Ｊ！Ｙは、第４図（ｂ）のご
と（，１−下−・対の雄雌ロール（７ａ）（７ｂ）を複
数組同一・甲面上に適宜間隔を置いて並設して構成され
るもので、一端側から他端側にかけて雄雌ロール（７ａ
）（７ｂ）の嵌み合い深さを順次大きくして、１−記帯
板（２Ｂ）をそれぞれ、その長手方向に順送りしながら
順次大きく深（圧延して、第１および第２の補強用帯板
（２）（２’）を、両者の開放部が互いに逆向きになる
ように圧延成形する。Rolling roll (7) J! Y is constructed by arranging multiple pairs of male and female rolls (7a) (7b) on the same shell at appropriate intervals as shown in Figure 4(b) (1-lower-). male and female rolls (7a) from one end to the other end.
) (7b) is gradually increased, and the strip plates (2B) described in 1- are sequentially fed to a greater depth (rolled to the first and second reinforcing strips) while being fed in the longitudinal direction. The strips (2) and (2') are rolled and formed so that their open portions are oriented in opposite directions.
次いで、第４図、第５図で明示の如１−記第１および第
２の補強用帯板（２）（２”）を癖付はロール（４）群
に順次送り込み、円弧状のろき癖を付けるとともに、所
定の捻り角をＪＪ、えて、第１１第２の補強用帯板（２
）（２’）を第６図の如く同一・軸線（ａ）ににおいて
軸心方向に沿って交互に配置されるよう螺旋状に巻回さ
せることにより、第７図で示すごとき螺旋補強条（２人
）を作製する。Next, as clearly shown in FIGS. 4 and 5, the first and second reinforcing strips (2) (2") are sequentially fed into the group of rolls (4), and then rolled through an arc-shaped filter. At the same time, the 11th and 2nd reinforcing strips (2
) (2') are spirally wound on the same axis (a) as shown in FIG. 6 so as to be arranged alternately along the axial direction, thereby forming a spiral reinforcing strip ( 2 people).
」１記の癖付はロール（４）群は、２木を一組とするロ
ール（４ａ）（４ｂ）（４ｃ）を、螺旋状に巻回された
補強用帯板（２）（２’）の螺旋軸心に対しやや傾斜さ
せ、かつ各ロール（４ａ）（４ｂ）（４ｃ）の外周を結
ぶ仮想線が所定の曲率をもつように配置支持して構成さ
れるとともに、これと同軸一体化された保形ロール（５
ａ）（５ｂ）（５ｃ）を介して、」二記第１および第２
の補強用帯板（２）（２’） ノｆｌｌｌ板部分（２ｂ
）（２ｂ’）どうしが互いに重合するようにピッチを整
えつつ螺旋方向に移送される。なお、第４図中（８）は
、補強用帯板（２）（２’）を螺旋方向に移送案内する
ガイド装置であって、螺旋補強条（２人）の形状に適合
する形状のスリブ）（８ａ）をもつ金型（８ｂ）より構
成され、両帯板（２）（２’）の側板部分（２ｂ）（２
ｂ’）どうしの重合状態を保つのに役立つが、このガイ
ド装置（８）は省略してもよい。``The group of rolls (4) has two rolls (4a), (4b), and (4c) that are spirally wound with reinforcing strips (2) (2'). ) is arranged and supported so that the imaginary line connecting the outer periphery of each roll (4a) (4b) (4c) has a predetermined curvature, and is coaxially integrated with this. shape-retaining roll (5
a) (5b) (5c) through "Second Articles 1 and 2
Reinforcing strips (2) (2') No full plate part (2b
)(2b') are transferred in a spiral direction while adjusting the pitch so that they overlap each other. In addition, (8) in FIG. 4 is a guide device for transporting and guiding the reinforcing strips (2) (2') in a spiral direction, and is a guide device that is a guide device that transfers and guides the reinforcing strips (2) (2') in a spiral direction. ) (8a), and the side plate portions (2b) (2
This guide device (8) may be omitted, although it serves to maintain the polymerization state of b').
ついで、第８および９図で示すごとく螺旋補強条（２Ａ
）の内外に配置したダイ（ＧＡ）（ｆｉＢ）から゛！１
溶融状態のままで樹脂素材（ＩＡ）（ＩＢ）を板状に押
出し、その隣接する側縁部どうしが順次重合磁石される
状態に補強条（２Ａ）の内外周面に押さえ込み用ロール
（９Ａ）（９Ｂ）を介して巻回被覆することにより螺旋
形状の管壁（１）を作製する。Next, as shown in Figures 8 and 9, spiral reinforcement strips (2A
) from the die (GA) (fiB) placed inside and outside the ゛! 1
The resin materials (IA) (IB) are extruded into a plate shape while still in a molten state, and pressing rolls (9A) are applied to the inner and outer peripheral surfaces of the reinforcing strip (2A) so that the adjacent side edges are sequentially polymerized and magnetized. A spiral-shaped tube wall (1) is produced by winding and coating through (9B).
尚、上記第１および第２の補強用帯板（２）（２’）の
圧延に際して、第１０図で示すように、互いに異なる軸
線（ａ）（ａ’）上で行ったのち、両者を集合させて螺
旋状に巻回してもよい。In addition, when rolling the first and second reinforcing strips (2) and (2'), as shown in FIG. 10, after rolling them on mutually different axes (a) and (a'), They may be collected and wound spirally.
また、螺旋補強条（２Ａ）の内外周面を樹脂材で被覆す
るに当たり、第１１および１２図で示すご、と（上記し
たガイド装置（８）内で行うようにしてもよい。即ち、
第１１図のごとく、第１および第２の補強用帯板（２）
（２’）の側板部分（２ｂ）（２ｂ”）どうしが互いに
重合するように螺旋状に巻回した後に樹脂素材（ＩＡ）
（ＩＢ）を被覆させて、所定の管壁（１）をスリ・ノ）
（８ａ）を通して螺旋方向に移送案内するものである。Further, in coating the inner and outer circumferential surfaces of the spiral reinforcing strip (2A) with the resin material, it may be done in the above-mentioned guide device (8) as shown in FIGS. 11 and 12. That is,
As shown in Figure 11, the first and second reinforcing strips (2)
The resin material (IA) is wound spirally so that the side plate parts (2b) (2b'') of (2') overlap each other.
(IB) to cover the specified pipe wall (1)
(8a) to guide the transfer in a spiral direction.
また、この発明により製造される複合樹脂管の構造とし
ては、次に列記のような変形実施例が考えられる。Further, as the structure of the composite resin pipe manufactured according to the present invention, the following modified embodiments can be considered.
■ 第１３図に示す実施例は、−１−記合成樹脂製の管
壁（１）を、断面弧状の螺旋波形状に形成するとともに
、第１の補強用帯板（２）および第２の補強用帯板（２
゛）も管壁（＋）の断面形状に合わせて断面弧状にした
ものである。■ In the embodiment shown in Fig. 13, the pipe wall (1) made of synthetic resin described in -1- is formed into a spiral wave shape with an arcuate cross section, and the first reinforcing band plate (2) and the second reinforcing band plate (2) are formed. Reinforcement strip (2
゛) also has an arcuate cross-section to match the cross-sectional shape of the tube wall (+).
■ 第１４図に示す実施例は、管壁（１）の断面形状か
第１および２図で示す実施例と同様に断面台形状の螺旋
波形状であり、第２の補強用帯板（２゛）の両側板部分
（２ｂ ’ ）（２ｂ ’ ）の内側に、その両側に位
置する第１の補強用帯板（２）（２）のそれぞれの一方
の側板部分（２ｂ）（２ｂ）がΦ合位置するように、か
み合わせ配置したものである。- In the embodiment shown in Fig. 14, the cross-sectional shape of the pipe wall (1) is a spiral wave shape with a trapezoidal cross-section, similar to the embodiment shown in Figs. Inside the side plate parts (2b') (2b') of ゛), one side plate part (2b) (2b) of each of the first reinforcing strips (2) (2) located on both sides thereof is installed. They are arranged so that they are in a Φ-aligned position.
■ 第１５図に示す実施例は、管壁（１）の断面形状が
第１１図で示す実施例と同様に断面弧状の螺旋状に形成
されているとともに、その断面形状に合わせて断面弧状
に形成された第１の補強用帯板（２）と第２の補強用帯
板（２゛）とをかみ合わせ配置したものである。■ In the embodiment shown in FIG. 15, the cross-sectional shape of the tube wall (1) is formed in a spiral shape with an arcuate cross-section, similar to the embodiment shown in FIG. The formed first reinforcing strip (2) and second reinforcing strip (2') are interlocked with each other.
■ 第１６図（ａ）（ｂ）に示す実施例は、」−２第１
の補強用帯板（２）と第２の補強用帯板（２°）との断
面形状を互いに異にして、両者の端部分を！ｌ：いに・
刊合させたものであり、管壁（１）内への埋設構造は１
；記した各実施例と変わらないため、第１、第２の補強
用帯板（２）（２’）のみを示している。■ The embodiment shown in FIGS. 16(a) and (b) is
The cross-sectional shapes of the reinforcing strip (2) and the second reinforcing strip (2°) are different from each other, and the end portions of both are! l: Ini・
The structure buried in the pipe wall (1) is 1.
; Only the first and second reinforcing strips (2) (2') are shown because they are the same as in each of the embodiments described above.
（発明の効果）
以１−説明した通り、この発明に係る可ｊＡ性複合管の
製造方法によれば、内外の樹脂材により形成される螺旋
波形状の管壁の肉厚内に金属薄板製の２枚の補強用帯板
を切れ目のない状態で連続して埋設することができるか
ら、この管を屈曲させて地中敷設した際にその＝一部に
応力が集中し、クラック等を発生することがないばかり
でなく、埋設箇所の掘削時において、つるはしや１１ｍ
１削機の先端刃などが衝突しても、そこを突き破って孔
をあけることを確実に防雨できて、Ｒ２の従来品に比べ
て全体として耐久性が著しく向にした複合管を得ること
ができる。特に、管壁の山珀部および谷８１りの両側壁
部分において２枚の補強用帯板の側板部分を小会させて
二重とすることによって、耐圧強度をアップでき、また
、必要箇所のみ二重で、谷部や山「１部は薄い補強用帯
板が存在するだけであるから、”Ｉｔ３４性にも優れた
管を得ることができるといった効果をイ丁する。(Effects of the Invention) As explained in 1-1 above, according to the method for manufacturing a flexible composite pipe according to the present invention, a thin metal plate is formed within the thickness of the spiral wave-shaped pipe wall formed by the inner and outer resin materials. The two reinforcing strips can be buried continuously without any breaks, so when the pipe is bent and laid underground, stress concentrates on one part of the pipe, causing cracks, etc. Not only is there nothing to do, but when excavating the buried location, there is no need to use a pickaxe or 11m
To obtain a composite pipe that can be rain-proofed to ensure that even if the tip blade of a cutting machine collides with it, it will not break through and make a hole, and the durability as a whole is significantly improved compared to the conventional R2 product. Can be done. In particular, by making the side plates of the two reinforcing strips meet and doubling them at the ridges and valleys of the pipe wall, the pressure resistance can be increased, and the pressure resistance can be increased only at the necessary points. Since there are only thin reinforcing strips in the valleys and peaks of the double tube, it is possible to obtain a tube with excellent It34 properties.
第１図はこの発明に係る製造方法によって製造された管
の一部切欠き側面図、第２図は第１図の要部の拡大縦断
側面図、第３図は補強用帯板の一例を示す斜視図、第４
図は製造装置の一部を省略した正面図、第５図は圧延装
置部の要部の拡大側面図、第６図は螺旋補強条作製認領
の概略図、第７図は螺旋補強条の斜視図、第８図は製造
第２−１−程の概略説明図、第９図は第８図の拡大縦断
側面図、第１０図は別の実施例における螺旋補強条作製
型頭の概略説明図、第１１図及び第１２図は製造装置の
要部の変形説明図、第１３図乃至第１６図（ａＨｂ）は
それぞれ管の変形例を示す要部の拡大縦断側面図、第１
７図は従来の複合樹脂管の要部の拡大縦断側面図である
。
（１）・・・管壁、
（２Ｈ２’）・・・補強用帯板、
（２人）・・・螺旋補強条、
（ＩＡ）（ＩＢ）・・・樹脂材、
第１図
第２図
第６図 第°図
第８図 第７図
第１Ｉ図
第１４図 第１３図
第１６図（ａ） 第１６図（ｂ）２
２０ ２“
第１７図Fig. 1 is a partially cutaway side view of a pipe manufactured by the manufacturing method according to the present invention, Fig. 2 is an enlarged longitudinal sectional side view of the main part of Fig. 1, and Fig. 3 is an example of a reinforcing band plate. Perspective view shown, No. 4
The figure is a front view with some parts of the manufacturing equipment omitted, Figure 5 is an enlarged side view of the main parts of the rolling equipment section, Figure 6 is a schematic diagram of the spiral reinforcement strip manufacturing approval area, and Figure 7 is a perspective view of the spiral reinforcement strip. 8 is a schematic explanatory diagram of the manufacturing step 2-1, FIG. 9 is an enlarged longitudinal sectional side view of FIG. 8, and FIG. 10 is a schematic explanatory diagram of a mold head for manufacturing a spiral reinforcing strip in another embodiment. , FIGS. 11 and 12 are explanatory views of modifications of the main parts of the manufacturing apparatus, and FIGS. 13 to 16 (aHb) are enlarged longitudinal sectional side views of the main parts showing modifications of the pipe, respectively.
FIG. 7 is an enlarged longitudinal sectional side view of the main parts of a conventional composite resin pipe. (1)... Pipe wall, (2H2')... Reinforcing strip, (2 people)... Spiral reinforcing strip, (IA) (IB)... Resin material, Figure 1 Figure 2 Figure 6 Figure 8 Figure 7 Figure 1I Figure 14 Figure 13 Figure 16 (a) Figure 16 (b) 2
20 2"
Figure 17
Claims (4)
放部が互いに逆向きでかつ交互に配置されるよう螺旋状
に巻回することにより螺旋補強条を作製する第１工程と
、この螺旋補強条の軸心延長線上において上記２枚の補
強用帯板の側板部分どうしが重合するようにピッチを整
えつつ螺旋方向に移送しながら、この螺旋補強条の内周
面および外周面に樹脂材を被覆することにより螺旋波形
状の樹脂製管壁を作製する第２工程とからなる可撓性複
合管の製造方法。(1) The first step of creating a spiral reinforcing strip by winding two reinforcing strips each having a substantially U-shaped cross section in a spiral shape so that their open portions are arranged in opposite directions and alternately. Then, while adjusting the pitch so that the side plate portions of the two reinforcing strips overlap each other on the axial extension line of the helical reinforcing strip, the inner peripheral surface and outer periphery of the helical reinforcing strip are transferred in the helical direction. A method for manufacturing a flexible composite pipe, comprising a second step of producing a spiral wave-shaped resin pipe wall by coating the surface with a resin material.
ものである特許請求の範囲第１項に記載の可撓性複合管
の製造方法。(2) The method for manufacturing a flexible composite pipe according to claim 1, wherein the two reinforcing strips are rolled on the same axis.
延されたのち、螺旋状に巻回されるものである特許請求
の範囲第１項に記載の可撓性複合管の製造方法。(3) The method for manufacturing a flexible composite pipe according to claim 1, wherein the two reinforcing strips are rolled on different axes and then wound spirally. .
用する特許請求の範囲第１項乃至第３項のいずれかに記
載の可撓性複合管の製造方法。(4) The method for manufacturing a flexible composite pipe according to any one of claims 1 to 3, wherein punching metal is used as both reinforcing strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9837187A JPH0751325B2 (en) | 1987-04-21 | 1987-04-21 | Method for manufacturing flexible composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9837187A JPH0751325B2 (en) | 1987-04-21 | 1987-04-21 | Method for manufacturing flexible composite pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63264329A true JPS63264329A (en) | 1988-11-01 |
| JPH0751325B2 JPH0751325B2 (en) | 1995-06-05 |
Family
ID=14218021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9837187A Expired - Lifetime JPH0751325B2 (en) | 1987-04-21 | 1987-04-21 | Method for manufacturing flexible composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751325B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5954760A (en) * | 1997-05-07 | 1999-09-21 | Pacesetter Ab | Helical winding for a cardiac lead |
| CN103909687A (en) * | 2014-03-13 | 2014-07-09 | 安徽猎塔电缆集团有限公司 | Composite fireproof environmental-friendly corrugated pipe |
-
1987
- 1987-04-21 JP JP9837187A patent/JPH0751325B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5954760A (en) * | 1997-05-07 | 1999-09-21 | Pacesetter Ab | Helical winding for a cardiac lead |
| CN103909687A (en) * | 2014-03-13 | 2014-07-09 | 安徽猎塔电缆集团有限公司 | Composite fireproof environmental-friendly corrugated pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0751325B2 (en) | 1995-06-05 |
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