JPS6338288B2 - - Google Patents
Info
- Publication number
- JPS6338288B2 JPS6338288B2 JP20340084A JP20340084A JPS6338288B2 JP S6338288 B2 JPS6338288 B2 JP S6338288B2 JP 20340084 A JP20340084 A JP 20340084A JP 20340084 A JP20340084 A JP 20340084A JP S6338288 B2 JPS6338288 B2 JP S6338288B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- coil
- cross
- section
- mandrel
- 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.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000009998 heat setting Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/12—Bending or folding helically, e.g. for making springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、圧力流体を給送するチユーブの製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a tube for feeding pressure fluid.
［従来の技術］
従来圧力流体を給送するチユーブに伸縮性を与
え、かつチユーブの絡りを防止するために、断面
円形の合成樹脂製の直線状のチユーブをコイル状
にすることは知られている。[Prior Art] Conventionally, it has been known to coil a straight tube made of synthetic resin with a circular cross section in order to give elasticity to the tube for feeding pressure fluid and to prevent the tube from tangling. ing.
［発明が解決しようとする問題点］
従来の合成樹脂製のコイルチユーブは、断面円
形の直線状チユーブを心金に巻回してコイル状に
しているが、その巻回直径、換言すれば曲率半径
が小になると、心金に巻回することによつてチユ
ーブの断面が扁平化し、そのためにチユーブの有
効断面積が減少して、流量特性が低下するという
問題点があつた。[Problems to be Solved by the Invention] In conventional synthetic resin coil tubes, a straight tube with a circular cross section is wound around a core metal to form a coil, but the winding diameter, in other words, the radius of curvature When the tube becomes small, the cross section of the tube becomes flattened by winding it around the mandrel, which causes a problem in that the effective cross-sectional area of the tube decreases and the flow characteristics deteriorate.
［問題点を解決するための手段、作用］
本発明の製造方法は、直線状の合成樹脂製チユ
ーブを円筒状の心金の表面に巻回してコイル状に
するコイルチユーブの製造において、上記心金に
巻回するチユーブの断面を楕円形状とし、その長
径方向を心金表面に当接して巻回し、巻回状態に
おいてその断面形状を円形として、その状態に固
定するという手段を用いることによつて、上記問
題点を解決したものである。[Means and effects for solving the problem] The manufacturing method of the present invention provides a method for manufacturing a coil tube in which a linear synthetic resin tube is wound around the surface of a cylindrical core metal to form a coil. The cross section of the tube to be wound around the gold is made into an elliptical shape, and the tube is wound with its major axis in contact with the surface of the cored metal, and in the wound state, its cross section becomes circular and is fixed in that state. This solves the above problems.
図面を参照してさらに具体的に説明すると、本
発明による合成樹脂製コイルチユーブの製造にお
いては、まず、合成樹脂製で第２図Ａに示すよう
な断面楕円形状の直線状のチユーブ１を、長径方
向の面が円筒状の心金表面に当接するようにし
て、心金を回転させるなどの適宜手段により、チ
ユーブを心金に巻回する。この心金は、単なる丸
棒でもよいが、チユーブの巻回位置に螺旋状の溝
を設けたものとすることもできる。 To explain more specifically with reference to the drawings, in manufacturing the synthetic resin coil tube according to the present invention, first, a linear tube 1 made of synthetic resin and having an elliptical cross section as shown in FIG. The tube is wound around the mandrel by appropriate means such as rotating the mandrel so that the surface in the major diameter direction contacts the surface of the cylindrical mandrel. This mandrel may be a simple round bar, but it may also be one with a spiral groove provided at the winding position of the tube.
このような心金に対するチユーブ１の巻回によ
つて、チユーブ１にはそれを扁平化しようとする
力が働くので、その力によつて楕円の長径が縮め
られ、第２図Ｂに示すように断面円形となる。従
つて、チユーブ１を予め断面楕円形状に形成して
おく場合に、その楕円形は、チユーブをコイル状
にしたときに断面が円形になるような形状である
ことが必要である。 By winding the tube 1 around the mandrel in this way, a force is applied to the tube 1 to flatten it, and this force reduces the major axis of the ellipse, as shown in Figure 2B. The cross section becomes circular. Therefore, when the tube 1 is previously formed to have an elliptical cross-section, the ellipse must be such that the cross-section becomes circular when the tube is coiled.
このようにして円形断面に変形されたチユーブ
は、熱変形可能な温度雰囲気中で加熱した後に冷
却するヒートセツト等の手段によつて、コイル状
態及び断面円形の状態に固定し、その後に心金を
抜き取ることによつて、第１図に示すような所望
形状のコイル状チユーブとすることができる。な
お、上記ヒートセツトは、必要に応じて２回以上
行うことがあり、その場合にコイル径を段階的に
縮少させることができる。 The tube thus transformed into a circular cross-section is fixed into a coiled state and a circular cross-sectional state by means such as heat setting, in which the tube is heated in a heat-deformable temperature atmosphere and then cooled, and then a mandrel is attached. By extracting it, a coiled tube with a desired shape as shown in FIG. 1 can be obtained. Note that the above heat setting may be performed two or more times as necessary, and in that case, the coil diameter can be reduced in stages.
また、このようにしてコイル状部２が形成され
たコイルチユーブの両端部分３，３は、型で加圧
する等の適宜の矯正手段により断面円形に保持し
た後、ヒートセツト等でこの状態を固定する。 Further, both end portions 3, 3 of the coil tube in which the coiled portion 2 is formed in this manner are held in a circular cross-section by appropriate correction means such as pressurizing with a mold, and then fixed in this state by heat setting or the like. .
［発明の効果］
以上に詳述したように、本発明の方法によれ
ば、あらかじめ断面楕円形状に形成した直線状チ
ユーブを、その長径方向の面を円筒状の心金表面
に当接して巻回してゆくことによつて、チユーブ
を心金に巻き付ける時にチユーブに加わる力を利
用するのみで、断面円形のコイルチユーブを得る
ことができ、他に格別の操作を必要としないの
で、極めて簡単に断面円形で流量特性のよいコイ
ルチユーブを得ることができる。[Effects of the Invention] As described in detail above, according to the method of the present invention, a linear tube formed in advance with an elliptical cross section is wound with its major diameter surface in contact with the surface of a cylindrical mandrel. By rotating the tube, you can obtain a coil tube with a circular cross section by simply using the force applied to the tube when winding it around the mandrel, and no other special operations are required, making it extremely easy. A coil tube with a circular cross section and good flow characteristics can be obtained.
第１図は、本発明によつて製造したコイルチユ
ーブの側面図、第２図Ａは、本発明に使用するチ
ユーブの断面図、第２図Ｂはコイル状にした後の
チユーブの断面図である。
１……チユーブ、２……コイル状部、３……両
端部分。
FIG. 1 is a side view of a coiled tube manufactured according to the present invention, FIG. 2A is a cross-sectional view of the tube used in the present invention, and FIG. 2B is a cross-sectional view of the tube after being coiled. be. 1...tube, 2...coiled portion, 3...both end portions.
Claims (1)
の表面に巻回してコイル状にするコイルチユーブ
の製造において、上記心金に巻回するチユーブの
断面を楕円形状とし、その長径方向を心金表面に
当接して巻回し、巻回状態においてその断面形状
を円形として、その状態に固定することを特徴と
するコイルチユーブの製造方法。1. In manufacturing a coil tube in which a linear synthetic resin tube is wound around the surface of a cylindrical mandrel to form a coil, the tube to be wound around the mandrel has an elliptical cross section, and its major axis is aligned with the center. A method for manufacturing a coil tube, which comprises: winding the coil tube in contact with a gold surface, making the cross-sectional shape circular in the wound state, and fixing the coil tube in that state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20340084A JPS6179619A (en) | 1984-09-28 | 1984-09-28 | Manufacture of synthetic resin coiled tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20340084A JPS6179619A (en) | 1984-09-28 | 1984-09-28 | Manufacture of synthetic resin coiled tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6179619A JPS6179619A (en) | 1986-04-23 |
| JPS6338288B2 true JPS6338288B2 (en) | 1988-07-29 |
Family
ID=16473421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20340084A Granted JPS6179619A (en) | 1984-09-28 | 1984-09-28 | Manufacture of synthetic resin coiled tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6179619A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015226807A1 (en) * | 2015-12-29 | 2017-06-29 | Robert Bosch Gmbh | Component for fuel injection system and method for manufacturing a component of a fuel injection system |
-
1984
- 1984-09-28 JP JP20340084A patent/JPS6179619A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6179619A (en) | 1986-04-23 |
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