JPH03292133A - Multi-manufacturing method of profile pipe for filament winding and mandrel to be used for that method - Google Patents
Multi-manufacturing method of profile pipe for filament winding and mandrel to be used for that methodInfo
- Publication number
- JPH03292133A JPH03292133A JP2094874A JP9487490A JPH03292133A JP H03292133 A JPH03292133 A JP H03292133A JP 2094874 A JP2094874 A JP 2094874A JP 9487490 A JP9487490 A JP 9487490A JP H03292133 A JPH03292133 A JP H03292133A
- Authority
- JP
- Japan
- Prior art keywords
- tubes
- tube
- shaft
- mandrel
- pipes
- 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
- 238000009730 filament winding Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 9
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 2
- 239000004917 carbon fiber Substances 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 238000004904 shortening Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明は、フィラメントワイディング用異形管の多数
本取り製造方法及びその方法に用いられるマンドレルに
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a multi-filament manufacturing method for irregularly shaped tubes for filament winding, and a mandrel used in the method.
(従来の技術)
従来のフィラメントワイディング用異形管の製造方法は
、製品となるフィラメントワイディング用異形管の一部
あるいは全体が異型部であるので、一つのマンドレルで
一つの製品を製造するようにしていた。(Prior Art) In the conventional manufacturing method of a deformed tube for filament winding, a part or the whole of the deformed tube for filament winding is a deformed part, so it is difficult to manufacture one product with one mandrel. I was doing it.
〈発明が解決するための手段〉
従来のフィラメントワイディング用異形管の製造方法は
、このように一つのマンドレルで一つの製品だけしか製
造することができなかったので、生産効率が悪く、コス
トが高くなるといった問題点があった。<Means for Solving the Problems of the Invention> In the conventional method of manufacturing a deformed tube for filament winding, only one product could be manufactured using one mandrel, resulting in poor production efficiency and high costs. There was a problem with the price being high.
また、硬化炉の都合により、1日1〜2バツチだけしか
稼働させることができず、生産本数が少ないといった問
題点があった。Further, due to the curing furnace, only one or two batches could be operated per day, resulting in a problem in that the number of units produced was small.
この発明の課題は、上記従来の問題点を解決することに
ある。An object of the present invention is to solve the above-mentioned conventional problems.
すなわち、−度に多数本のフィラメントワイディング用
異形管を製造することができる。したがって、成形時間
及び段取替え時間を短縮しで、成形速度を向上させるこ
とにより生産効率を倍増することができる。更に、材料
効率の向上を図ることができるフィラメントワイディン
グ用異形管の多数本取り製造方法及びその方法に用いら
れるマンドレルを提供することである。That is, a large number of deformed tubes for filament winding can be manufactured at one time. Therefore, the production efficiency can be doubled by shortening the molding time and setup change time and increasing the molding speed. Furthermore, it is an object of the present invention to provide a method for producing a large number of deformed tubes for filament winding, which can improve material efficiency, and a mandrel used in the method.
(課題を解決するための手段)
この発明は、上記課題を解決するために、両端に異型部
を有するフィラメントワイディング用異形管をマンドレ
ルを用いて多数本製造する方法であって、前記マンドレ
ルが、シャフトとこのシャフトに着脱可能に固定される
複数本の同径管と端部及び中部異型管とからなり、端部
異型管が前記各同径管の両端に配設されて、相対向する
中部異型管を小径管で連結固着してシャフトに着脱可能
に固定されたものであり、このマンドレルの外表面にフ
ィラメントワイディング用異形管となる樹脂層を形成し
、この樹脂層を前記小径管部分て切断した後、両端の端
部異型管をシャフトから外側に向けて取り除いて脱型し
、連結固着された相対向する中部異型管間の小径管の部
分に脱型板を挿入して固定させ、その後に中部異型管を
一方側に向けて取り除いて脱型し、更に他方側に向けて
脱型するとともに、各同径管を引き抜いて脱型すること
によって、多数本のフィラメントワイディング用異形管
を製造することとした。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a method for manufacturing a large number of deformed tubes for filament winding having deformed portions at both ends using a mandrel, wherein the mandrel is , consisting of a shaft, a plurality of tubes with the same diameter that are detachably fixed to the shaft, and tubes with different shapes at the ends and middle portions, and the tubes with different shapes at the ends are arranged at both ends of each of the tubes with the same diameter and face each other. The middle irregular-shaped tube is connected and fixed with a small-diameter tube and removably fixed to the shaft.A resin layer that becomes the irregular-shaped tube for filament winding is formed on the outer surface of this mandrel, and this resin layer is attached to the small-diameter tube. After cutting the parts, remove the atypical tubes at both ends outward from the shaft to remove the mold, and insert a demolding plate into the small diameter tube between the opposing central atypical tubes that are connected and fixed. After that, the middle atypical tube is removed to one side and demolded, and then the other side is demolded, and each tube of the same diameter is pulled out and demolded. We decided to manufacture a deformed tube.
また、両端に異型部を有するフィラメントワイディング
用異形管を製造するときに使用されるマンドレルであっ
て、シャフトとこのシャフトに着脱可能に固定される複
数本の同径管と端部及び中部異型管とからなり、端部異
型管が前記各同径管の両端に配設されて、相対向する異
型管を小径管で連結固着してシャフトに着脱可能に固定
されるようになされたものとした。In addition, it is a mandrel used when manufacturing a deformed tube for filament winding that has deformed parts at both ends, and includes a shaft, a plurality of tubes of the same diameter that are detachably fixed to the shaft, and a deformed part at the ends and the middle part. A tube with a different shape at the end is arranged at both ends of each of the same diameter tubes, and the opposing different shape tubes are connected and fixed by a small diameter tube so as to be removably fixed to the shaft. did.
(作用)
このマンドレルを用いることによって、−度に多数本の
フィラメントワイディング用異形管を製造することが可
能である。(Function) By using this mandrel, it is possible to manufacture a large number of deformed tubes for filament winding at one time.
したがって、成形時間及び段取替え時間を短縮して、成
形速度を向上させることによって生産効率を倍増するこ
とが可能である。Therefore, it is possible to double the production efficiency by shortening the molding time and setup change time and increasing the molding speed.
更に、材料効率の向上を図ることが可能である。Furthermore, it is possible to improve material efficiency.
(実施例)
以下、この発明に係るフィラメントワイディング用異形
管の多数本取り製造方法及びその方法に用いられるマン
ドレルを一実施態様を示す図面に基づいて説明する。(Example) Hereinafter, a method for producing a large number of deformed tubes for filament winding according to the present invention and a mandrel used in the method will be described based on drawings showing one embodiment.
第1図はこの発明に係る多数本取り用マンドレルでフィ
ラメントワイディング用異形管を製造する状態を示す一
部破断した正面図、第2図はマンドレルの端部異型管を
示す一部破断した正面図、第3図はその側面図、第4図
はマンドレルの同径管を示す一部破断した正面図、第5
図は小径管によって連結固着された中部異型管を示す一
部破断した正面図、第6図はその側面図、第7図はマン
ドレルのシャフトの正面図、第8図は脱型板の側面図、
第9図は第8図における■−IX線断面図である。Fig. 1 is a partially cutaway front view showing a state in which an irregularly shaped tube for filament winding is manufactured using a multi-strand mandrel according to the present invention, and Fig. 2 is a partially broken front view showing the irregularly shaped tube at the end of the mandrel. Figure 3 is a side view, Figure 4 is a partially cutaway front view showing the same diameter pipe of the mandrel, and Figure 5 is a side view.
The figure is a partially broken front view showing the middle atypical tube connected and fixed by a small diameter tube, Figure 6 is a side view thereof, Figure 7 is a front view of the mandrel shaft, and Figure 8 is a side view of the demolding plate. ,
FIG. 9 is a sectional view taken along the line -IX in FIG. 8.
この発明に係る製造方法に使用されるマンドレル1は、
第1図に示すように、シャフト2とこのシャフト2に取
付ねじ6・・・によって着脱自在に固定される複数本の
同径管3・・・と複数本の端部及び中部異型管4・・・
とからなり、端部異型管4・・・が前記各同径管3・・
・の両端に配設されて、相対向する中部異型管4.4が
小径管5で連結固着されてシャフト2に固定されたもの
である。The mandrel 1 used in the manufacturing method according to the present invention is
As shown in FIG. 1, a shaft 2, a plurality of pipes 3 of the same diameter removably fixed to the shaft 2 by mounting screws 6, a plurality of end and middle irregularly shaped pipes 4,・・・
The atypical end tube 4... is composed of each of the same diameter tubes 3...
The middle deformed tubes 4.4, which are disposed at both ends of the shaft 2 and facing each other, are connected and fixed to the shaft 2 by a small diameter tube 5.
両端部の端部異型管4は第2図に示すように、本体部4
1が筒形状のものである。この本体部41の基部側部分
に小径筒形状の固定部42が固着されている。この固定
部42の外周面には引き出し用シリンダ〈図示せず〉の
雌ねじ孔に螺入される雄ねじ部421が形成されている
。また、固定部42の適宜箇所に、取付ねじ6が螺入さ
れてシャフト2に固定するための雌ねじ孔422が設け
られている。As shown in FIG.
1 has a cylindrical shape. A small-diameter cylindrical fixing portion 42 is fixed to the base side portion of the main body portion 41 . A male screw portion 421 is formed on the outer circumferential surface of the fixing portion 42 and is screwed into a female screw hole of a drawer cylinder (not shown). Furthermore, a female threaded hole 422 is provided at an appropriate location of the fixing portion 42, into which the mounting screw 6 is screwed and fixed to the shaft 2.
更に、本体部41の先端内面には、同径管3の端部の切
欠き保合部311 (後述する)に係合される切込み係
合部411が設けられている。Furthermore, the inner surface of the distal end of the main body portion 41 is provided with a notch engaging portion 411 that is engaged with a notch retaining portion 311 (described later) at the end of the tube 3 of the same diameter.
同径管3は第4図に示すように、大筒形状の本体部31
の両端部分の内面に小筒形状の固定部32.32が固着
され、この固定部32.32の適宜箇所に、それぞれ取
付ねじ6が螺入されてシャフト2に固定するための雌ね
じ孔321,321が設けられている。As shown in FIG. 4, the same-diameter tube 3 has a large cylinder-shaped main body
A small cylindrical fixing part 32.32 is fixed to the inner surface of both end parts of the fixing part 32.32, and a female screw hole 321 for fixing it to the shaft 2 by screwing the mounting screw 6 into an appropriate position of the fixing part 32.32, respectively. 321 is provided.
更に、本体部31の両端外面には、端部及び中部異型管
4.4の先端の切込み保合部411,411に係合され
る切゛欠き係合部311,311が設けられている。Further, the outer surfaces of both ends of the main body portion 31 are provided with notch engaging portions 311, 311 that are engaged with notch retaining portions 411, 411 at the end portions and the tip of the middle irregularly shaped tube 4.4.
また、これらの同径管3.3の対向する端部に配設され
る中部異型管4.4は、第5図に示すように、小径管5
で連結固着され、この小径管5の軸方向略中央部に、取
付ねじ6が螺入されてシャフト2に固定するための雌ね
じ孔51が設けられている。In addition, the middle atypical tube 4.4 disposed at opposite ends of these same diameter tubes 3.3 is connected to a small diameter tube 5 as shown in FIG.
A female threaded hole 51 is provided approximately at the center of the small diameter tube 5 in the axial direction, into which a mounting screw 6 is screwed and fixed to the shaft 2.
更に、本体部41.41の先端内面には、同径管3,3
の端部の切欠き係合部311.311に係合される切込
み係合部411.411が設けられている。Furthermore, on the inner surface of the tip of the main body portion 41.41, there are pipes 3, 3 of the same diameter.
A cut-out engagement portion 411.411 is provided which is engaged with the cut-out engagement portion 311.311 at the end of.
シャフト2には、第7図に示すように、その両端部に、
引き出し用シリンダ(図示せず)の先端の雄ねし部が螺
入される雌ねじ孔21.21が設けられている。As shown in FIG. 7, the shaft 2 has a
A female threaded hole 21.21 is provided into which a male threaded portion at the tip of a drawer cylinder (not shown) is screwed.
第8図に示すのは、脱型のときに小径管5の部分に嵌め
込まれて使用される脱型板7であって、二枚の分割板7
1.72からなり、合わせ結合した状態の中央部分に貫
通孔73が設けられている。What is shown in FIG. 8 is a demolding plate 7 that is used by being fitted into the small diameter tube 5 during demolding, and is composed of two dividing plates 7.
1.72, and a through hole 73 is provided in the center portion of the mated and coupled state.
二枚の分割板71.72はその結合部分711゜721
が本体部分の半分の厚さに互い違いに形成さ°れ、これ
らの結合部分711,721を互いに合わせ結合した状
態で本体部分の厚さと同しになるように形成されている
。The two dividing plates 71 and 72 have their joint parts 711° and 721
are formed alternately to have half the thickness of the main body portion, and when these connecting portions 711 and 721 are aligned and connected to each other, they are formed to have the same thickness as the main body portion.
この結合部分711.721は、二枚の分割板71.7
2からなる脱型板7を小径管5の部分に嵌め込んで使用
するときに、互いに合わせられて取付ねし8・・・によ
って結合されるようになっている。This joint portion 711.721 is made up of two dividing plates 71.7.
When the demolding plates 7 consisting of 2 are fitted into the small diameter pipe 5 and used, they are aligned with each other and connected by the mounting screws 8.
尚、符号73・・・は固定用孔部である。Note that numerals 73... are fixing holes.
フィラメントワイディング用異形管Hを製造するときは
、複数本の各同径管3・・・の両端に端部異型管4・・
・を配設し、相対向する中部異型管4.4は第5図に示
す小径管5で連結固着されたものとする。When manufacturing the deformed tube H for filament winding, a deformed end tube 4 is attached to both ends of each of the plurality of tubes 3 having the same diameter.
. . , and the opposing central irregular-shaped tubes 4.4 are connected and fixed by a small diameter tube 5 shown in FIG.
そして、各同径管3・・・と端部異型管4・・・と小径
管5とを取付ねじ6・・・でシャフト2に固定させる。Then, each of the same-diameter tubes 3 .
この状態で、第1図に示すように、フィラメントワイデ
ィング用異形管Hとなる炭素繊維入りエポキシ樹脂の樹
脂層を各同径管3・・・と端部及び中部異型管4・・・
と小径管5の外面側に巻き付けて底形し、小径管5の部
分でこの樹脂層を切断する。In this state, as shown in FIG. 1, a resin layer of carbon fiber-containing epoxy resin that will become the irregular shaped tube H for filament winding is applied to each of the same diameter tubes 3... and the end and middle irregular shaped tubes 4...
The resin layer is wrapped around the outer surface of the small-diameter tube 5 to form a bottom shape, and the resin layer is cut at the small-diameter tube 5 portion.
次に、取付ねじ6・・・を外して引き出し用シリンダの
駆動によって、両端の端部異型管4.4を外側に向けて
取り除いて脱型する。Next, the mounting screws 6... are removed, and the deformed end tubes 4.4 at both ends are removed outward by driving the drawer cylinder to be demolded.
そして、連結固着された相対向する中部異型管4.4間
の小径管5の部分に脱型板7を挿入して固定させる。Then, a demolding plate 7 is inserted and fixed in the portion of the small diameter tube 5 between the opposed central deformed tubes 4 and 4 that are connected and fixed.
その後に、シャフト2を引き出し用シリンダで引き出す
ことによって、これらの中部異型管4゜4を一方側に向
けて取り除いて脱型し、更に他方側に向けて取り除いて
脱型する。Thereafter, by pulling out the shaft 2 with a drawing cylinder, these middle deformed tubes 4.4 are removed toward one side and demolded, and further toward the other side to be demolded.
これとともに、各同径管3・・・を引き抜いて脱型を完
了する。At the same time, each tube 3 with the same diameter is pulled out to complete demolding.
この脱型完了後に、製造されるものが、フィラメントワ
イディング用異形管Hとなる。After this demolding is completed, what is manufactured becomes a deformed tube H for filament winding.
尚、この製造方法に用いられるマンドレルは、樹脂の種
類、繊維の種類に関係なく使用することが可能である。Note that the mandrel used in this manufacturing method can be used regardless of the type of resin or type of fiber.
また、マンドレル1としては、大きさは各種考えられ、
製品の大きさには制限がない。In addition, various sizes can be considered for the mandrel 1,
There is no limit to the size of the product.
尚、上記実施例では、フィラメントワイディング用異形
管Hの2本取りについて説明したが、2本取り以上、多
数本取りとすることもできる。Incidentally, in the above embodiment, the case where two irregularly shaped tubes H for filament winding are used is explained, but it is also possible to use two or more tubes.
上記のように、このマンドレルlを用いることによって
、−度に多数本のフィラメントワイディング用異形管H
を製造することが可能である。As mentioned above, by using this mandrel I, a large number of deformed tubes H for filament winding can be made at the same time.
It is possible to manufacture
したがって、成形時間及び段取替え時間を短縮すること
ができて、成形速度を向上できることによって生産効率
を倍増することが可能である。Therefore, the molding time and setup change time can be shortened, the molding speed can be improved, and production efficiency can be doubled.
更に、材料効率の向上を図ることができ、従来の一本づ
つの制作に比べて25〜30%の材料効率の上昇ができ
た。Furthermore, we were able to improve material efficiency by 25 to 30% compared to the conventional production of one piece at a time.
尚、この発明は、端部及び中部異型管4・・・が真円形
のものだけでなく、多角形及び変形円のものについても
適用できるものである。Note that the present invention is applicable not only to those in which the end portions and the middle irregularly shaped tube 4 are perfectly circular, but also to those in which they are polygonal and deformed circles.
(発明の効果)
以上説明したように、この発明によれば、−度に多数本
のフィラメントワイディング用異形管を製造することが
できる。したがって、成形時間及び段取替え時間を短縮
して、成形速度を向上させることによって生産効率を倍
増することができる。(Effects of the Invention) As explained above, according to the present invention, a large number of deformed tubes for filament winding can be manufactured at one time. Therefore, production efficiency can be doubled by shortening molding time and setup change time and improving molding speed.
更に、材料効率の向上を図ることができる等の効果を奏
する。Furthermore, there are effects such as being able to improve material efficiency.
第1図はこの発明に係る多数本取り用マンドレルでフィ
ラメントワイディング用異形管を製造する状態を示す一
部破断した正面図、第2図はマンドレルの異型管を示す
一部破断した正面図、第3図はその側面図、第4図はマ
ンドレルの同径管を示す一部破断した正面図、第5図は
小径管によって連結固着された異型管を示す一部破断し
た正面図、第6図はその側面図、第7図はマンドレルの
シャフトの正面図、第8図は脱型板の側面図、第9図は
第8図におけるIX−IX線断面図である。
H・・・フィラメントワイディング用異形管1・・・マ
ンドレル
2・・・シャフト
3・・・同径管
4・・・端部及び中部異型管
5・・・小径管
7・・・脱型板FIG. 1 is a partially cutaway front view showing a state in which a modified tube for filament winding is manufactured using a multi-strand mandrel according to the present invention, and FIG. 2 is a partially cutaway front view showing a modified tube of the mandrel. Fig. 3 is a side view thereof, Fig. 4 is a partially cutaway front view showing the same diameter tube of the mandrel, Fig. 5 is a partially cutaway front view showing an irregularly shaped tube connected and fixed by a small diameter tube, and Fig. 6 7 is a front view of the shaft of the mandrel, FIG. 8 is a side view of the demolding plate, and FIG. 9 is a sectional view taken along line IX--IX in FIG. 8. H...Deformed tube for filament winding 1...Mandrel 2...Shaft 3...Same diameter tube 4...End and middle section deformed tube 5...Small diameter tube 7...Demolding plate
Claims (1)
異形管をマンドレルを用いて多数本製造する方法であっ
て、 前記マンドレルが、シャフトとこのシャフ トに着脱可能に固定される複数本の同径管と端部及び中
部異型管とからなり、端部異型管が前記各同径管の両端
に配設されて、相対向する中部異型管を小径管で連結固
着してシャフトに着脱可能に固定されたものであり、こ
のマンドレルの外表面にフィラメントワイディング用異
形管となる樹脂層を形成し、この樹脂層を前記小径管部
分で切断した後、両端の端部異型管をシャフトから外側
に向けて取り除いて脱型し、連結固着された相対向する
中部異型管間の小径管の部分に脱型板を挿入して固定さ
せ、その後に中部異型管を一方側に向けて取り除いて脱
型し、更に他方側に向けて脱型するとともに、各同径管
を引き抜いて脱型することによって、多数本のフィラメ
ントワイディング用異形管を製造することを特徴とする
フィラメントワイディング用異形管の多数本取り製造方
法。 2)両端に異型部を有するフィラメントワイディング用
異形管を製造するときに使用されるマンドレルであって
、 シャフトとこのシャフトに着脱可能に固定 される複数本の同径管と端部及び中部異型管とからなり
、端部異型管が前記各同径管の両端に配設されて、相対
向する中部異型管を小径管で連結固着してシャフトに着
脱可能に固定されるようになされたことを特徴とするフ
ィラメントワイディング用異形管の多数本取り用マンド
レル。[Scope of Claims] 1) A method for manufacturing a large number of irregularly shaped tubes for filament winding having irregularly shaped parts at both ends using a mandrel, the mandrel comprising a shaft and a plurality of filament winding tubes removably fixed to the shaft. Consisting of a main tube with the same diameter and a different-shaped end tube and a different-shaped middle section, the different-shaped end tubes are arranged at both ends of each of the same-diameter tubes, and the opposing middle different-shaped tubes are connected and fixed with a small-diameter tube to the shaft. A resin layer is formed on the outer surface of this mandrel to form a modified tube for filament winding, and after cutting this resin layer at the small diameter tube section, the modified tubes at both ends are separated. Remove the mold outward from the shaft, insert a demolding plate into the small-diameter tube part between the opposing central irregularly shaped tubes that are connected and fixed, and fix it, and then turn the middle irregularly shaped tube to one side. Filament winding, characterized in that a large number of deformed tubes for filament winding are manufactured by removing and demolding, further demolding toward the other side, and pulling out and demolding each tube of the same diameter. A method for producing multiple tubes of irregularly shaped pipes. 2) A mandrel used when manufacturing a deformed tube for filament winding that has deformed parts at both ends, including a shaft, multiple tubes of the same diameter detachably fixed to this shaft, and deformed ends and middle parts. a tube, with atypical end tubes arranged at both ends of each of the same diameter tubes, and opposing middle atypical tubes connected and fixed by a small diameter tube to be removably fixed to the shaft. A mandrel for winding multiple irregularly shaped tubes for filament winding.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2094874A JPH03292133A (en) | 1990-04-09 | 1990-04-09 | Multi-manufacturing method of profile pipe for filament winding and mandrel to be used for that method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2094874A JPH03292133A (en) | 1990-04-09 | 1990-04-09 | Multi-manufacturing method of profile pipe for filament winding and mandrel to be used for that method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03292133A true JPH03292133A (en) | 1991-12-24 |
Family
ID=14122200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2094874A Pending JPH03292133A (en) | 1990-04-09 | 1990-04-09 | Multi-manufacturing method of profile pipe for filament winding and mandrel to be used for that method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03292133A (en) |
-
1990
- 1990-04-09 JP JP2094874A patent/JPH03292133A/en active Pending
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